contrib/elftoolchain/readelf/readelf.c

   1 /*-
   2  * Copyright (c) 2009-2015 Kai Wang
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/param.h>
  28 #include <sys/queue.h>
  29
  30 #include <ar.h>
  31 #include <assert.h>
  32 #include <capsicum_helpers.h>
  33 #include <ctype.h>
  34 #include <dwarf.h>
  35 #include <err.h>
  36 #include <fcntl.h>
  37 #include <gelf.h>
  38 #include <getopt.h>
  39 #include <libdwarf.h>
  40 #include <libelftc.h>
  41 #include <libgen.h>
  42 #include <stdarg.h>
  43 #include <stdbool.h>
  44 #include <stdint.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <time.h>
  49 #include <unistd.h>
  50 #include <zlib.h>
  51
  52 #include <libcasper.h>
  53 #include <casper/cap_fileargs.h>
  54
  55 #include "_elftc.h"
  56
  57 ELFTC_VCSID("$Id: readelf.c 3769 2019-06-29 15:15:02Z emaste $");
  58
  59 /* Backwards compatability for older FreeBSD releases. */
  60 #ifndef STB_GNU_UNIQUE
  61 #define STB_GNU_UNIQUE 10
  62 #endif
  63 #ifndef STT_SPARC_REGISTER
  64 #define STT_SPARC_REGISTER 13
  65 #endif
  66
  67
  68 /*
  69  * readelf(1) options.
  70  */
  71 #define RE_AA   0x00000001
  72 #define RE_C    0x00000002
  73 #define RE_DD   0x00000004
  74 #define RE_D    0x00000008
  75 #define RE_G    0x00000010
  76 #define RE_H    0x00000020
  77 #define RE_II   0x00000040
  78 #define RE_I    0x00000080
  79 #define RE_L    0x00000100
  80 #define RE_NN   0x00000200
  81 #define RE_N    0x00000400
  82 #define RE_P    0x00000800
  83 #define RE_R    0x00001000
  84 #define RE_SS   0x00002000
  85 #define RE_S    0x00004000
  86 #define RE_T    0x00008000
  87 #define RE_U    0x00010000
  88 #define RE_VV   0x00020000
  89 #define RE_WW   0x00040000
  90 #define RE_W    0x00080000
  91 #define RE_X    0x00100000
  92 #define RE_Z    0x00200000
  93
  94 /*
  95  * dwarf dump options.
  96  */
  97 #define DW_A    0x00000001
  98 #define DW_FF   0x00000002
  99 #define DW_F    0x00000004
 100 #define DW_I    0x00000008
 101 #define DW_LL   0x00000010
 102 #define DW_L    0x00000020
 103 #define DW_M    0x00000040
 104 #define DW_O    0x00000080
 105 #define DW_P    0x00000100
 106 #define DW_RR   0x00000200
 107 #define DW_R    0x00000400
 108 #define DW_S    0x00000800
 109
 110 #define DW_DEFAULT_OPTIONS (DW_A | DW_F | DW_I | DW_L | DW_O | DW_P | \
 111             DW_R | DW_RR | DW_S)
 112
 113 /*
 114  * readelf(1) run control flags.
 115  */
 116 #define DISPLAY_FILENAME        0x0001
 117
 118 /*
 119  * Internal data structure for sections.
 120  */
 121 struct section {
 122         const char      *name;          /* section name */
 123         Elf_Scn         *scn;           /* section scn */
 124         uint64_t         off;           /* section offset */
 125         uint64_t         sz;            /* section size */
 126         uint64_t         entsize;       /* section entsize */
 127         uint64_t         align;         /* section alignment */
 128         uint64_t         type;          /* section type */
 129         uint64_t         flags;         /* section flags */
 130         uint64_t         addr;          /* section virtual addr */
 131         uint32_t         link;          /* section link ndx */
 132         uint32_t         info;          /* section info ndx */
 133 };
 134
 135 struct dumpop {
 136         union {
 137                 size_t si;              /* section index */
 138                 const char *sn;         /* section name */
 139         } u;
 140         enum {
 141                 DUMP_BY_INDEX = 0,
 142                 DUMP_BY_NAME
 143         } type;                         /* dump type */
 144 #define HEX_DUMP        0x0001
 145 #define STR_DUMP        0x0002
 146         int op;                         /* dump operation */
 147         STAILQ_ENTRY(dumpop) dumpop_list;
 148 };
 149
 150 struct symver {
 151         const char *name;
 152         int type;
 153 };
 154
 155 /*
 156  * Structure encapsulates the global data for readelf(1).
 157  */
 158 struct readelf {
 159         const char       *filename;     /* current processing file. */
 160         int               options;      /* command line options. */
 161         int               flags;        /* run control flags. */
 162         int               dop;          /* dwarf dump options. */
 163         Elf              *elf;          /* underlying ELF descriptor. */
 164         Elf              *ar;           /* archive ELF descriptor. */
 165         Dwarf_Debug       dbg;          /* DWARF handle. */
 166         Dwarf_Half        cu_psize;     /* DWARF CU pointer size. */
 167         Dwarf_Half        cu_osize;     /* DWARF CU offset size. */
 168         Dwarf_Half        cu_ver;       /* DWARF CU version. */
 169         GElf_Ehdr         ehdr;         /* ELF header. */
 170         int               ec;           /* ELF class. */
 171         size_t            shnum;        /* #sections. */
 172         struct section   *vd_s;         /* Verdef section. */
 173         struct section   *vn_s;         /* Verneed section. */
 174         struct section   *vs_s;         /* Versym section. */
 175         uint16_t         *vs;           /* Versym array. */
 176         int               vs_sz;        /* Versym array size. */
 177         struct symver    *ver;          /* Version array. */
 178         int               ver_sz;       /* Size of version array. */
 179         struct section   *sl;           /* list of sections. */
 180         STAILQ_HEAD(, dumpop) v_dumpop; /* list of dump ops. */
 181         uint64_t        (*dw_read)(Elf_Data *, uint64_t *, int);
 182         uint64_t        (*dw_decode)(uint8_t **, int);
 183 };
 184
 185 enum options
 186 {
 187         OPTION_DEBUG_DUMP
 188 };
 189
 190 static struct option longopts[] = {
 191         {"all", no_argument, NULL, 'a'},
 192         {"arch-specific", no_argument, NULL, 'A'},
 193         {"archive-index", no_argument, NULL, 'c'},
 194         {"debug-dump", optional_argument, NULL, OPTION_DEBUG_DUMP},
 195         {"decompress", no_argument, 0, 'z'},
 196         {"dynamic", no_argument, NULL, 'd'},
 197         {"file-header", no_argument, NULL, 'h'},
 198         {"full-section-name", no_argument, NULL, 'N'},
 199         {"headers", no_argument, NULL, 'e'},
 200         {"help", no_argument, 0, 'H'},
 201         {"hex-dump", required_argument, NULL, 'x'},
 202         {"histogram", no_argument, NULL, 'I'},
 203         {"notes", no_argument, NULL, 'n'},
 204         {"program-headers", no_argument, NULL, 'l'},
 205         {"relocs", no_argument, NULL, 'r'},
 206         {"sections", no_argument, NULL, 'S'},
 207         {"section-headers", no_argument, NULL, 'S'},
 208         {"section-groups", no_argument, NULL, 'g'},
 209         {"section-details", no_argument, NULL, 't'},
 210         {"segments", no_argument, NULL, 'l'},
 211         {"string-dump", required_argument, NULL, 'p'},
 212         {"symbols", no_argument, NULL, 's'},
 213         {"syms", no_argument, NULL, 's'},
 214         {"unwind", no_argument, NULL, 'u'},
 215         {"use-dynamic", no_argument, NULL, 'D'},
 216         {"version-info", no_argument, 0, 'V'},
 217         {"version", no_argument, 0, 'v'},
 218         {"wide", no_argument, 0, 'W'},
 219         {NULL, 0, NULL, 0}
 220 };
 221
 222 struct eflags_desc {
 223         uint64_t flag;
 224         const char *desc;
 225 };
 226
 227 struct flag_desc {
 228         uint64_t flag;
 229         const char *desc;
 230 };
 231
 232 struct flag_desc_list {
 233         uint32_t type;
 234         const char *desc_str;
 235         struct flag_desc *desc;
 236 };
 237
 238 struct mips_option {
 239         uint64_t flag;
 240         const char *desc;
 241 };
 242
 243 struct loc_at {
 244         Dwarf_Attribute la_at;
 245         Dwarf_Unsigned la_off;
 246         Dwarf_Unsigned la_lowpc;
 247         Dwarf_Half la_cu_psize;
 248         Dwarf_Half la_cu_osize;
 249         Dwarf_Half la_cu_ver;
 250 };
 251
 252 static void add_dumpop(struct readelf *re, size_t si, const char *sn, int op,
 253     int t);
 254 static const char *aeabi_adv_simd_arch(uint64_t simd);
 255 static const char *aeabi_align_needed(uint64_t an);
 256 static const char *aeabi_align_preserved(uint64_t ap);
 257 static const char *aeabi_arm_isa(uint64_t ai);
 258 static const char *aeabi_cpu_arch(uint64_t arch);
 259 static const char *aeabi_cpu_arch_profile(uint64_t pf);
 260 static const char *aeabi_div(uint64_t du);
 261 static const char *aeabi_enum_size(uint64_t es);
 262 static const char *aeabi_fp_16bit_format(uint64_t fp16);
 263 static const char *aeabi_fp_arch(uint64_t fp);
 264 static const char *aeabi_fp_denormal(uint64_t fd);
 265 static const char *aeabi_fp_exceptions(uint64_t fe);
 266 static const char *aeabi_fp_hpext(uint64_t fh);
 267 static const char *aeabi_fp_number_model(uint64_t fn);
 268 static const char *aeabi_fp_optm_goal(uint64_t fog);
 269 static const char *aeabi_fp_rounding(uint64_t fr);
 270 static const char *aeabi_hardfp(uint64_t hfp);
 271 static const char *aeabi_mpext(uint64_t mp);
 272 static const char *aeabi_optm_goal(uint64_t og);
 273 static const char *aeabi_pcs_config(uint64_t pcs);
 274 static const char *aeabi_pcs_got(uint64_t got);
 275 static const char *aeabi_pcs_r9(uint64_t r9);
 276 static const char *aeabi_pcs_ro(uint64_t ro);
 277 static const char *aeabi_pcs_rw(uint64_t rw);
 278 static const char *aeabi_pcs_wchar_t(uint64_t wt);
 279 static const char *aeabi_t2ee(uint64_t t2ee);
 280 static const char *aeabi_thumb_isa(uint64_t ti);
 281 static const char *aeabi_fp_user_exceptions(uint64_t fu);
 282 static const char *aeabi_unaligned_access(uint64_t ua);
 283 static const char *aeabi_vfp_args(uint64_t va);
 284 static const char *aeabi_virtual(uint64_t vt);
 285 static const char *aeabi_wmmx_arch(uint64_t wmmx);
 286 static const char *aeabi_wmmx_args(uint64_t wa);
 287 static const char *elf_class(unsigned int class);
 288 static const char *elf_endian(unsigned int endian);
 289 static const char *elf_machine(unsigned int mach);
 290 static const char *elf_osabi(unsigned int abi);
 291 static const char *elf_type(unsigned int type);
 292 static const char *elf_ver(unsigned int ver);
 293 static const char *dt_type(unsigned int mach, unsigned int dtype);
 294 static bool dump_ar(struct readelf *re, int);
 295 static void dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe);
 296 static void dump_attributes(struct readelf *re);
 297 static uint8_t *dump_compatibility_tag(uint8_t *p, uint8_t *pe);
 298 static void dump_dwarf(struct readelf *re);
 299 static void dump_dwarf_abbrev(struct readelf *re);
 300 static void dump_dwarf_aranges(struct readelf *re);
 301 static void dump_dwarf_block(struct readelf *re, uint8_t *b,
 302     Dwarf_Unsigned len);
 303 static void dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level);
 304 static void dump_dwarf_frame(struct readelf *re, int alt);
 305 static void dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie,
 306     uint8_t *insts, Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf,
 307     Dwarf_Addr pc, Dwarf_Debug dbg);
 308 static int dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde,
 309     Dwarf_Addr pc, Dwarf_Unsigned func_len, Dwarf_Half cie_ra);
 310 static void dump_dwarf_frame_section(struct readelf *re, struct section *s,
 311     int alt);
 312 static void dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info);
 313 static void dump_dwarf_macinfo(struct readelf *re);
 314 static void dump_dwarf_line(struct readelf *re);
 315 static void dump_dwarf_line_decoded(struct readelf *re);
 316 static void dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr);
 317 static void dump_dwarf_loclist(struct readelf *re);
 318 static void dump_dwarf_pubnames(struct readelf *re);
 319 static void dump_dwarf_ranges(struct readelf *re);
 320 static void dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die,
 321     Dwarf_Addr base);
 322 static void dump_dwarf_str(struct readelf *re);
 323 static void dump_eflags(struct readelf *re, uint64_t e_flags);
 324 static bool dump_elf(struct readelf *re);
 325 static void dump_flags(struct flag_desc *fd, uint64_t flags);
 326 static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab);
 327 static void dump_dynamic(struct readelf *re);
 328 static void dump_liblist(struct readelf *re);
 329 static void dump_mips_abiflags(struct readelf *re, struct section *s);
 330 static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe);
 331 static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz);
 332 static void dump_mips_options(struct readelf *re, struct section *s);
 333 static void dump_mips_option_flags(const char *name, struct mips_option *opt,
 334     uint64_t info);
 335 static void dump_mips_reginfo(struct readelf *re, struct section *s);
 336 static void dump_mips_specific_info(struct readelf *re);
 337 static void dump_notes(struct readelf *re);
 338 static void dump_notes_content(struct readelf *re, const char *buf, size_t sz,
 339     off_t off);
 340 static void dump_notes_data(struct readelf *re, const char *name,
 341     uint32_t type, const char *buf, size_t sz);
 342 static void dump_svr4_hash(struct section *s);
 343 static void dump_svr4_hash64(struct readelf *re, struct section *s);
 344 static void dump_gnu_hash(struct readelf *re, struct section *s);
 345 static void dump_gnu_property_type_0(struct readelf *re, const char *buf,
 346     size_t sz);
 347 static void dump_hash(struct readelf *re);
 348 static void dump_phdr(struct readelf *re);
 349 static void dump_ppc_attributes(uint8_t *p, uint8_t *pe);
 350 static void dump_section_groups(struct readelf *re);
 351 static void dump_symtab(struct readelf *re, int i);
 352 static void dump_symtabs(struct readelf *re);
 353 static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe);
 354 static void dump_ver(struct readelf *re);
 355 static void dump_verdef(struct readelf *re, int dump);
 356 static void dump_verneed(struct readelf *re, int dump);
 357 static void dump_versym(struct readelf *re);
 358 static const char *dwarf_reg(unsigned int mach, unsigned int reg);
 359 static const char *dwarf_regname(struct readelf *re, unsigned int num);
 360 static struct dumpop *find_dumpop(struct readelf *re, size_t si,
 361     const char *sn, int op, int t);
 362 static int get_ent_count(struct section *s, int *ent_count);
 363 static int get_mips_register_size(uint8_t flag);
 364 static char *get_regoff_str(struct readelf *re, Dwarf_Half reg,
 365     Dwarf_Addr off);
 366 static const char *get_string(struct readelf *re, int strtab, size_t off);
 367 static const char *get_symbol_name(struct readelf *re, int symtab, int i);
 368 static uint64_t get_symbol_value(struct readelf *re, int symtab, int i);
 369 static void load_sections(struct readelf *re);
 370 static int loc_at_comparator(const void *la1, const void *la2);
 371 static const char *mips_abi_fp(uint64_t fp);
 372 static const char *note_type(const char *note_name, unsigned int et,
 373     unsigned int nt);
 374 static const char *note_type_freebsd(unsigned int nt);
 375 static const char *note_type_freebsd_core(unsigned int nt);
 376 static const char *note_type_go(unsigned int nt);
 377 static const char *note_type_gnu(unsigned int nt);
 378 static const char *note_type_linux_core(unsigned int nt);
 379 static const char *note_type_netbsd(unsigned int nt);
 380 static const char *note_type_openbsd(unsigned int nt);
 381 static const char *note_type_unknown(unsigned int nt);
 382 static const char *note_type_xen(unsigned int nt);
 383 static const char *option_kind(uint8_t kind);
 384 static const char *phdr_type(unsigned int mach, unsigned int ptype);
 385 static const char *ppc_abi_fp(uint64_t fp);
 386 static const char *ppc_abi_vector(uint64_t vec);
 387 static void readelf_usage(int status);
 388 static void readelf_version(void);
 389 static void search_loclist_at(struct readelf *re, Dwarf_Die die,
 390     Dwarf_Unsigned lowpc, struct loc_at **la_list,
 391     size_t *la_list_len, size_t *la_list_cap);
 392 static void search_ver(struct readelf *re);
 393 static const char *section_type(unsigned int mach, unsigned int stype);
 394 static void set_cu_context(struct readelf *re, Dwarf_Half psize,
 395     Dwarf_Half osize, Dwarf_Half ver);
 396 static const char *st_bind(unsigned int sbind);
 397 static const char *st_shndx(unsigned int shndx);
 398 static const char *st_type(unsigned int mach, unsigned int os,
 399     unsigned int stype);
 400 static const char *st_vis(unsigned int svis);
 401 static const char *top_tag(unsigned int tag);
 402 static void unload_sections(struct readelf *re);
 403 static uint64_t _read_lsb(Elf_Data *d, uint64_t *offsetp,
 404     int bytes_to_read);
 405 static uint64_t _read_msb(Elf_Data *d, uint64_t *offsetp,
 406     int bytes_to_read);
 407 static uint64_t _decode_lsb(uint8_t **data, int bytes_to_read);
 408 static uint64_t _decode_msb(uint8_t **data, int bytes_to_read);
 409 static int64_t _decode_sleb128(uint8_t **dp, uint8_t *dpe);
 410 static uint64_t _decode_uleb128(uint8_t **dp, uint8_t *dpe);
 411
 412 static struct eflags_desc arm_eflags_desc[] = {
 413         {EF_ARM_RELEXEC, "relocatable executable"},
 414         {EF_ARM_HASENTRY, "has entry point"},
 415         {EF_ARM_SYMSARESORTED, "sorted symbol tables"},
 416         {EF_ARM_DYNSYMSUSESEGIDX, "dynamic symbols use segment index"},
 417         {EF_ARM_MAPSYMSFIRST, "mapping symbols precede others"},
 418         {EF_ARM_BE8, "BE8"},
 419         {EF_ARM_LE8, "LE8"},
 420         {EF_ARM_INTERWORK, "interworking enabled"},
 421         {EF_ARM_APCS_26, "uses APCS/26"},
 422         {EF_ARM_APCS_FLOAT, "uses APCS/float"},
 423         {EF_ARM_PIC, "position independent"},
 424         {EF_ARM_ALIGN8, "8 bit structure alignment"},
 425         {EF_ARM_NEW_ABI, "uses new ABI"},
 426         {EF_ARM_OLD_ABI, "uses old ABI"},
 427         {EF_ARM_SOFT_FLOAT, "software FP"},
 428         {EF_ARM_VFP_FLOAT, "VFP"},
 429         {EF_ARM_MAVERICK_FLOAT, "Maverick FP"},
 430         {0, NULL}
 431 };
 432
 433 static struct eflags_desc mips_eflags_desc[] = {
 434         {EF_MIPS_NOREORDER, "noreorder"},
 435         {EF_MIPS_PIC, "pic"},
 436         {EF_MIPS_CPIC, "cpic"},
 437         {EF_MIPS_UCODE, "ugen_reserved"},
 438         {EF_MIPS_ABI2, "abi2"},
 439         {EF_MIPS_OPTIONS_FIRST, "odk first"},
 440         {EF_MIPS_ARCH_ASE_MDMX, "mdmx"},
 441         {EF_MIPS_ARCH_ASE_M16, "mips16"},
 442         {0, NULL}
 443 };
 444
 445 static struct eflags_desc powerpc_eflags_desc[] = {
 446         {EF_PPC_EMB, "emb"},
 447         {EF_PPC_RELOCATABLE, "relocatable"},
 448         {EF_PPC_RELOCATABLE_LIB, "relocatable-lib"},
 449         {0, NULL}
 450 };
 451
 452 static struct eflags_desc riscv_eflags_desc[] = {
 453         {EF_RISCV_RVC, "RVC"},
 454         {EF_RISCV_RVE, "RVE"},
 455         {EF_RISCV_TSO, "TSO"},
 456         {0, NULL}
 457 };
 458
 459 static struct eflags_desc sparc_eflags_desc[] = {
 460         {EF_SPARC_32PLUS, "v8+"},
 461         {EF_SPARC_SUN_US1, "ultrasparcI"},
 462         {EF_SPARC_HAL_R1, "halr1"},
 463         {EF_SPARC_SUN_US3, "ultrasparcIII"},
 464         {0, NULL}
 465 };
 466
 467 static const char *
 468 elf_osabi(unsigned int abi)
 469 {
 470         static char s_abi[32];
 471
 472         switch(abi) {
 473         case ELFOSABI_NONE: return "NONE";
 474         case ELFOSABI_HPUX: return "HPUX";
 475         case ELFOSABI_NETBSD: return "NetBSD";
 476         case ELFOSABI_GNU: return "GNU";
 477         case ELFOSABI_HURD: return "HURD";
 478         case ELFOSABI_86OPEN: return "86OPEN";
 479         case ELFOSABI_SOLARIS: return "Solaris";
 480         case ELFOSABI_AIX: return "AIX";
 481         case ELFOSABI_IRIX: return "IRIX";
 482         case ELFOSABI_FREEBSD: return "FreeBSD";
 483         case ELFOSABI_TRU64: return "TRU64";
 484         case ELFOSABI_MODESTO: return "MODESTO";
 485         case ELFOSABI_OPENBSD: return "OpenBSD";
 486         case ELFOSABI_OPENVMS: return "OpenVMS";
 487         case ELFOSABI_NSK: return "NSK";
 488         case ELFOSABI_CLOUDABI: return "CloudABI";
 489         case ELFOSABI_ARM_AEABI: return "ARM EABI";
 490         case ELFOSABI_ARM: return "ARM";
 491         case ELFOSABI_STANDALONE: return "StandAlone";
 492         default:
 493                 snprintf(s_abi, sizeof(s_abi), "<unknown: %#x>", abi);
 494                 return (s_abi);
 495         }
 496 };
 497
 498 static const char *
 499 elf_machine(unsigned int mach)
 500 {
 501         static char s_mach[32];
 502
 503         switch (mach) {
 504         case EM_NONE: return "Unknown machine";
 505         case EM_M32: return "AT&T WE32100";
 506         case EM_SPARC: return "Sun SPARC";
 507         case EM_386: return "Intel i386";
 508         case EM_68K: return "Motorola 68000";
 509         case EM_IAMCU: return "Intel MCU";
 510         case EM_88K: return "Motorola 88000";
 511         case EM_860: return "Intel i860";
 512         case EM_MIPS: return "MIPS R3000 Big-Endian only";
 513         case EM_S370: return "IBM System/370";
 514         case EM_MIPS_RS3_LE: return "MIPS R3000 Little-Endian";
 515         case EM_PARISC: return "HP PA-RISC";
 516         case EM_VPP500: return "Fujitsu VPP500";
 517         case EM_SPARC32PLUS: return "SPARC v8plus";
 518         case EM_960: return "Intel 80960";
 519         case EM_PPC: return "PowerPC 32-bit";
 520         case EM_PPC64: return "PowerPC 64-bit";
 521         case EM_S390: return "IBM System/390";
 522         case EM_V800: return "NEC V800";
 523         case EM_FR20: return "Fujitsu FR20";
 524         case EM_RH32: return "TRW RH-32";
 525         case EM_RCE: return "Motorola RCE";
 526         case EM_ARM: return "ARM";
 527         case EM_SH: return "Hitachi SH";
 528         case EM_SPARCV9: return "SPARC v9 64-bit";
 529         case EM_TRICORE: return "Siemens TriCore embedded processor";
 530         case EM_ARC: return "Argonaut RISC Core";
 531         case EM_H8_300: return "Hitachi H8/300";
 532         case EM_H8_300H: return "Hitachi H8/300H";
 533         case EM_H8S: return "Hitachi H8S";
 534         case EM_H8_500: return "Hitachi H8/500";
 535         case EM_IA_64: return "Intel IA-64 Processor";
 536         case EM_MIPS_X: return "Stanford MIPS-X";
 537         case EM_COLDFIRE: return "Motorola ColdFire";
 538         case EM_68HC12: return "Motorola M68HC12";
 539         case EM_MMA: return "Fujitsu MMA";
 540         case EM_PCP: return "Siemens PCP";
 541         case EM_NCPU: return "Sony nCPU";
 542         case EM_NDR1: return "Denso NDR1 microprocessor";
 543         case EM_STARCORE: return "Motorola Star*Core processor";
 544         case EM_ME16: return "Toyota ME16 processor";
 545         case EM_ST100: return "STMicroelectronics ST100 processor";
 546         case EM_TINYJ: return "Advanced Logic Corp. TinyJ processor";
 547         case EM_X86_64: return "Advanced Micro Devices x86-64";
 548         case EM_PDSP: return "Sony DSP Processor";
 549         case EM_FX66: return "Siemens FX66 microcontroller";
 550         case EM_ST9PLUS: return "STMicroelectronics ST9+ 8/16 microcontroller";
 551         case EM_ST7: return "STmicroelectronics ST7 8-bit microcontroller";
 552         case EM_68HC16: return "Motorola MC68HC16 microcontroller";
 553         case EM_68HC11: return "Motorola MC68HC11 microcontroller";
 554         case EM_68HC08: return "Motorola MC68HC08 microcontroller";
 555         case EM_68HC05: return "Motorola MC68HC05 microcontroller";
 556         case EM_SVX: return "Silicon Graphics SVx";
 557         case EM_ST19: return "STMicroelectronics ST19 8-bit mc";
 558         case EM_VAX: return "Digital VAX";
 559         case EM_CRIS: return "Axis Communications 32-bit embedded processor";
 560         case EM_JAVELIN: return "Infineon Tech. 32bit embedded processor";
 561         case EM_FIREPATH: return "Element 14 64-bit DSP Processor";
 562         case EM_ZSP: return "LSI Logic 16-bit DSP Processor";
 563         case EM_MMIX: return "Donald Knuth's educational 64-bit proc";
 564         case EM_HUANY: return "Harvard University MI object files";
 565         case EM_PRISM: return "SiTera Prism";
 566         case EM_AVR: return "Atmel AVR 8-bit microcontroller";
 567         case EM_FR30: return "Fujitsu FR30";
 568         case EM_D10V: return "Mitsubishi D10V";
 569         case EM_D30V: return "Mitsubishi D30V";
 570         case EM_V850: return "NEC v850";
 571         case EM_M32R: return "Mitsubishi M32R";
 572         case EM_MN10300: return "Matsushita MN10300";
 573         case EM_MN10200: return "Matsushita MN10200";
 574         case EM_PJ: return "picoJava";
 575         case EM_OPENRISC: return "OpenRISC 32-bit embedded processor";
 576         case EM_ARC_A5: return "ARC Cores Tangent-A5";
 577         case EM_XTENSA: return "Tensilica Xtensa Architecture";
 578         case EM_VIDEOCORE: return "Alphamosaic VideoCore processor";
 579         case EM_TMM_GPP: return "Thompson Multimedia General Purpose Processor";
 580         case EM_NS32K: return "National Semiconductor 32000 series";
 581         case EM_TPC: return "Tenor Network TPC processor";
 582         case EM_SNP1K: return "Trebia SNP 1000 processor";
 583         case EM_ST200: return "STMicroelectronics ST200 microcontroller";
 584         case EM_IP2K: return "Ubicom IP2xxx microcontroller family";
 585         case EM_MAX: return "MAX Processor";
 586         case EM_CR: return "National Semiconductor CompactRISC microprocessor";
 587         case EM_F2MC16: return "Fujitsu F2MC16";
 588         case EM_MSP430: return "TI embedded microcontroller msp430";
 589         case EM_BLACKFIN: return "Analog Devices Blackfin (DSP) processor";
 590         case EM_SE_C33: return "S1C33 Family of Seiko Epson processors";
 591         case EM_SEP: return "Sharp embedded microprocessor";
 592         case EM_ARCA: return "Arca RISC Microprocessor";
 593         case EM_UNICORE: return "Microprocessor series from PKU-Unity Ltd";
 594         case EM_AARCH64: return "AArch64";
 595         case EM_RISCV: return "RISC-V";
 596         default:
 597                 snprintf(s_mach, sizeof(s_mach), "<unknown: %#x>", mach);
 598                 return (s_mach);
 599         }
 600
 601 }
 602
 603 static const char *
 604 elf_class(unsigned int class)
 605 {
 606         static char s_class[32];
 607
 608         switch (class) {
 609         case ELFCLASSNONE: return "none";
 610         case ELFCLASS32: return "ELF32";
 611         case ELFCLASS64: return "ELF64";
 612         default:
 613                 snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class);
 614                 return (s_class);
 615         }
 616 }
 617
 618 static const char *
 619 elf_endian(unsigned int endian)
 620 {
 621         static char s_endian[32];
 622
 623         switch (endian) {
 624         case ELFDATANONE: return "none";
 625         case ELFDATA2LSB: return "2's complement, little endian";
 626         case ELFDATA2MSB: return "2's complement, big endian";
 627         default:
 628                 snprintf(s_endian, sizeof(s_endian), "<unknown: %#x>", endian);
 629                 return (s_endian);
 630         }
 631 }
 632
 633 static const char *
 634 elf_type(unsigned int type)
 635 {
 636         static char s_type[32];
 637
 638         switch (type) {
 639         case ET_NONE: return "NONE (None)";
 640         case ET_REL: return "REL (Relocatable file)";
 641         case ET_EXEC: return "EXEC (Executable file)";
 642         case ET_DYN: return "DYN (Shared object file)";
 643         case ET_CORE: return "CORE (Core file)";
 644         default:
 645                 if (type >= ET_LOPROC)
 646                         snprintf(s_type, sizeof(s_type), "<proc: %#x>", type);
 647                 else if (type >= ET_LOOS && type <= ET_HIOS)
 648                         snprintf(s_type, sizeof(s_type), "<os: %#x>", type);
 649                 else
 650                         snprintf(s_type, sizeof(s_type), "<unknown: %#x>",
 651                             type);
 652                 return (s_type);
 653         }
 654 }
 655
 656 static const char *
 657 elf_ver(unsigned int ver)
 658 {
 659         static char s_ver[32];
 660
 661         switch (ver) {
 662         case EV_CURRENT: return "(current)";
 663         case EV_NONE: return "(none)";
 664         default:
 665                 snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>",
 666                     ver);
 667                 return (s_ver);
 668         }
 669 }
 670
 671 static const char *
 672 phdr_type(unsigned int mach, unsigned int ptype)
 673 {
 674         static char s_ptype[32];
 675
 676         if (ptype >= PT_LOPROC && ptype <= PT_HIPROC) {
 677                 switch (mach) {
 678                 case EM_ARM:
 679                         switch (ptype) {
 680                         case PT_ARM_ARCHEXT: return "ARM_ARCHEXT";
 681                         case PT_ARM_EXIDX: return "ARM_EXIDX";
 682                         }
 683                         break;
 684                 }
 685                 snprintf(s_ptype, sizeof(s_ptype), "LOPROC+%#x",
 686                     ptype - PT_LOPROC);
 687                 return (s_ptype);
 688         }
 689
 690         switch (ptype) {
 691         case PT_NULL: return "NULL";
 692         case PT_LOAD: return "LOAD";
 693         case PT_DYNAMIC: return "DYNAMIC";
 694         case PT_INTERP: return "INTERP";
 695         case PT_NOTE: return "NOTE";
 696         case PT_SHLIB: return "SHLIB";
 697         case PT_PHDR: return "PHDR";
 698         case PT_TLS: return "TLS";
 699         case PT_GNU_EH_FRAME: return "GNU_EH_FRAME";
 700         case PT_GNU_STACK: return "GNU_STACK";
 701         case PT_GNU_RELRO: return "GNU_RELRO";
 702         case PT_OPENBSD_RANDOMIZE: return "OPENBSD_RANDOMIZE";
 703         case PT_OPENBSD_WXNEEDED: return "OPENBSD_WXNEEDED";
 704         case PT_OPENBSD_BOOTDATA: return "OPENBSD_BOOTDATA";
 705         default:
 706                 if (ptype >= PT_LOOS && ptype <= PT_HIOS)
 707                         snprintf(s_ptype, sizeof(s_ptype), "LOOS+%#x",
 708                             ptype - PT_LOOS);
 709                 else
 710                         snprintf(s_ptype, sizeof(s_ptype), "<unknown: %#x>",
 711                             ptype);
 712                 return (s_ptype);
 713         }
 714 }
 715
 716 static const char *
 717 section_type(unsigned int mach, unsigned int stype)
 718 {
 719         static char s_stype[32];
 720
 721         if (stype >= SHT_LOPROC && stype <= SHT_HIPROC) {
 722                 switch (mach) {
 723                 case EM_ARM:
 724                         switch (stype) {
 725                         case SHT_ARM_EXIDX: return "ARM_EXIDX";
 726                         case SHT_ARM_PREEMPTMAP: return "ARM_PREEMPTMAP";
 727                         case SHT_ARM_ATTRIBUTES: return "ARM_ATTRIBUTES";
 728                         case SHT_ARM_DEBUGOVERLAY: return "ARM_DEBUGOVERLAY";
 729                         case SHT_ARM_OVERLAYSECTION: return "ARM_OVERLAYSECTION";
 730                         }
 731                         break;
 732                 case EM_X86_64:
 733                         switch (stype) {
 734                         case SHT_X86_64_UNWIND: return "X86_64_UNWIND";
 735                         default:
 736                                 break;
 737                         }
 738                         break;
 739                 case EM_MIPS:
 740                 case EM_MIPS_RS3_LE:
 741                         switch (stype) {
 742                         case SHT_MIPS_LIBLIST: return "MIPS_LIBLIST";
 743                         case SHT_MIPS_MSYM: return "MIPS_MSYM";
 744                         case SHT_MIPS_CONFLICT: return "MIPS_CONFLICT";
 745                         case SHT_MIPS_GPTAB: return "MIPS_GPTAB";
 746                         case SHT_MIPS_UCODE: return "MIPS_UCODE";
 747                         case SHT_MIPS_DEBUG: return "MIPS_DEBUG";
 748                         case SHT_MIPS_REGINFO: return "MIPS_REGINFO";
 749                         case SHT_MIPS_PACKAGE: return "MIPS_PACKAGE";
 750                         case SHT_MIPS_PACKSYM: return "MIPS_PACKSYM";
 751                         case SHT_MIPS_RELD: return "MIPS_RELD";
 752                         case SHT_MIPS_IFACE: return "MIPS_IFACE";
 753                         case SHT_MIPS_CONTENT: return "MIPS_CONTENT";
 754                         case SHT_MIPS_OPTIONS: return "MIPS_OPTIONS";
 755                         case SHT_MIPS_DELTASYM: return "MIPS_DELTASYM";
 756                         case SHT_MIPS_DELTAINST: return "MIPS_DELTAINST";
 757                         case SHT_MIPS_DELTACLASS: return "MIPS_DELTACLASS";
 758                         case SHT_MIPS_DWARF: return "MIPS_DWARF";
 759                         case SHT_MIPS_DELTADECL: return "MIPS_DELTADECL";
 760                         case SHT_MIPS_SYMBOL_LIB: return "MIPS_SYMBOL_LIB";
 761                         case SHT_MIPS_EVENTS: return "MIPS_EVENTS";
 762                         case SHT_MIPS_TRANSLATE: return "MIPS_TRANSLATE";
 763                         case SHT_MIPS_PIXIE: return "MIPS_PIXIE";
 764                         case SHT_MIPS_XLATE: return "MIPS_XLATE";
 765                         case SHT_MIPS_XLATE_DEBUG: return "MIPS_XLATE_DEBUG";
 766                         case SHT_MIPS_WHIRL: return "MIPS_WHIRL";
 767                         case SHT_MIPS_EH_REGION: return "MIPS_EH_REGION";
 768                         case SHT_MIPS_XLATE_OLD: return "MIPS_XLATE_OLD";
 769                         case SHT_MIPS_PDR_EXCEPTION: return "MIPS_PDR_EXCEPTION";
 770                         case SHT_MIPS_ABIFLAGS: return "MIPS_ABIFLAGS";
 771                         default:
 772                                 break;
 773                         }
 774                         break;
 775                 default:
 776                         break;
 777                 }
 778
 779                 snprintf(s_stype, sizeof(s_stype), "LOPROC+%#x",
 780                     stype - SHT_LOPROC);
 781                 return (s_stype);
 782         }
 783
 784         switch (stype) {
 785         case SHT_NULL: return "NULL";
 786         case SHT_PROGBITS: return "PROGBITS";
 787         case SHT_SYMTAB: return "SYMTAB";
 788         case SHT_STRTAB: return "STRTAB";
 789         case SHT_RELA: return "RELA";
 790         case SHT_HASH: return "HASH";
 791         case SHT_DYNAMIC: return "DYNAMIC";
 792         case SHT_NOTE: return "NOTE";
 793         case SHT_NOBITS: return "NOBITS";
 794         case SHT_REL: return "REL";
 795         case SHT_SHLIB: return "SHLIB";
 796         case SHT_DYNSYM: return "DYNSYM";
 797         case SHT_INIT_ARRAY: return "INIT_ARRAY";
 798         case SHT_FINI_ARRAY: return "FINI_ARRAY";
 799         case SHT_PREINIT_ARRAY: return "PREINIT_ARRAY";
 800         case SHT_GROUP: return "GROUP";
 801         case SHT_SYMTAB_SHNDX: return "SYMTAB_SHNDX";
 802         case SHT_SUNW_dof: return "SUNW_dof";
 803         case SHT_SUNW_cap: return "SUNW_cap";
 804         case SHT_GNU_HASH: return "GNU_HASH";
 805         case SHT_SUNW_ANNOTATE: return "SUNW_ANNOTATE";
 806         case SHT_SUNW_DEBUGSTR: return "SUNW_DEBUGSTR";
 807         case SHT_SUNW_DEBUG: return "SUNW_DEBUG";
 808         case SHT_SUNW_move: return "SUNW_move";
 809         case SHT_SUNW_COMDAT: return "SUNW_COMDAT";
 810         case SHT_SUNW_syminfo: return "SUNW_syminfo";
 811         case SHT_SUNW_verdef: return "SUNW_verdef";
 812         case SHT_SUNW_verneed: return "SUNW_verneed";
 813         case SHT_SUNW_versym: return "SUNW_versym";
 814         default:
 815                 if (stype >= SHT_LOOS && stype <= SHT_HIOS)
 816                         snprintf(s_stype, sizeof(s_stype), "LOOS+%#x",
 817                             stype - SHT_LOOS);
 818                 else if (stype >= SHT_LOUSER)
 819                         snprintf(s_stype, sizeof(s_stype), "LOUSER+%#x",
 820                             stype - SHT_LOUSER);
 821                 else
 822                         snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>",
 823                             stype);
 824                 return (s_stype);
 825         }
 826 }
 827
 828 static const char *
 829 dt_type(unsigned int mach, unsigned int dtype)
 830 {
 831         static char s_dtype[32];
 832
 833         switch (dtype) {
 834         case DT_NULL: return "NULL";
 835         case DT_NEEDED: return "NEEDED";
 836         case DT_PLTRELSZ: return "PLTRELSZ";
 837         case DT_PLTGOT: return "PLTGOT";
 838         case DT_HASH: return "HASH";
 839         case DT_STRTAB: return "STRTAB";
 840         case DT_SYMTAB: return "SYMTAB";
 841         case DT_RELA: return "RELA";
 842         case DT_RELASZ: return "RELASZ";
 843         case DT_RELAENT: return "RELAENT";
 844         case DT_STRSZ: return "STRSZ";
 845         case DT_SYMENT: return "SYMENT";
 846         case DT_INIT: return "INIT";
 847         case DT_FINI: return "FINI";
 848         case DT_SONAME: return "SONAME";
 849         case DT_RPATH: return "RPATH";
 850         case DT_SYMBOLIC: return "SYMBOLIC";
 851         case DT_REL: return "REL";
 852         case DT_RELSZ: return "RELSZ";
 853         case DT_RELENT: return "RELENT";
 854         case DT_PLTREL: return "PLTREL";
 855         case DT_DEBUG: return "DEBUG";
 856         case DT_TEXTREL: return "TEXTREL";
 857         case DT_JMPREL: return "JMPREL";
 858         case DT_BIND_NOW: return "BIND_NOW";
 859         case DT_INIT_ARRAY: return "INIT_ARRAY";
 860         case DT_FINI_ARRAY: return "FINI_ARRAY";
 861         case DT_INIT_ARRAYSZ: return "INIT_ARRAYSZ";
 862         case DT_FINI_ARRAYSZ: return "FINI_ARRAYSZ";
 863         case DT_RUNPATH: return "RUNPATH";
 864         case DT_FLAGS: return "FLAGS";
 865         case DT_PREINIT_ARRAY: return "PREINIT_ARRAY";
 866         case DT_PREINIT_ARRAYSZ: return "PREINIT_ARRAYSZ";
 867         case DT_MAXPOSTAGS: return "MAXPOSTAGS";
 868         case DT_SUNW_AUXILIARY: return "SUNW_AUXILIARY";
 869         case DT_SUNW_RTLDINF: return "SUNW_RTLDINF";
 870         case DT_SUNW_FILTER: return "SUNW_FILTER";
 871         case DT_SUNW_CAP: return "SUNW_CAP";
 872         case DT_SUNW_ASLR: return "SUNW_ASLR";
 873         case DT_CHECKSUM: return "CHECKSUM";
 874         case DT_PLTPADSZ: return "PLTPADSZ";
 875         case DT_MOVEENT: return "MOVEENT";
 876         case DT_MOVESZ: return "MOVESZ";
 877         case DT_FEATURE: return "FEATURE";
 878         case DT_POSFLAG_1: return "POSFLAG_1";
 879         case DT_SYMINSZ: return "SYMINSZ";
 880         case DT_SYMINENT: return "SYMINENT";
 881         case DT_GNU_HASH: return "GNU_HASH";
 882         case DT_TLSDESC_PLT: return "DT_TLSDESC_PLT";
 883         case DT_TLSDESC_GOT: return "DT_TLSDESC_GOT";
 884         case DT_GNU_CONFLICT: return "GNU_CONFLICT";
 885         case DT_GNU_LIBLIST: return "GNU_LIBLIST";
 886         case DT_CONFIG: return "CONFIG";
 887         case DT_DEPAUDIT: return "DEPAUDIT";
 888         case DT_AUDIT: return "AUDIT";
 889         case DT_PLTPAD: return "PLTPAD";
 890         case DT_MOVETAB: return "MOVETAB";
 891         case DT_SYMINFO: return "SYMINFO";
 892         case DT_VERSYM: return "VERSYM";
 893         case DT_RELACOUNT: return "RELACOUNT";
 894         case DT_RELCOUNT: return "RELCOUNT";
 895         case DT_FLAGS_1: return "FLAGS_1";
 896         case DT_VERDEF: return "VERDEF";
 897         case DT_VERDEFNUM: return "VERDEFNUM";
 898         case DT_VERNEED: return "VERNEED";
 899         case DT_VERNEEDNUM: return "VERNEEDNUM";
 900         case DT_AUXILIARY: return "AUXILIARY";
 901         case DT_USED: return "USED";
 902         case DT_FILTER: return "FILTER";
 903         case DT_GNU_PRELINKED: return "GNU_PRELINKED";
 904         case DT_GNU_CONFLICTSZ: return "GNU_CONFLICTSZ";
 905         case DT_GNU_LIBLISTSZ: return "GNU_LIBLISTSZ";
 906         }
 907
 908         if (dtype >= DT_LOPROC && dtype <= DT_HIPROC) {
 909                 switch (mach) {
 910                 case EM_ARM:
 911                         switch (dtype) {
 912                         case DT_ARM_SYMTABSZ:
 913                                 return "ARM_SYMTABSZ";
 914                         default:
 915                                 break;
 916                         }
 917                         break;
 918                 case EM_MIPS:
 919                 case EM_MIPS_RS3_LE:
 920                         switch (dtype) {
 921                         case DT_MIPS_RLD_VERSION:
 922                                 return "MIPS_RLD_VERSION";
 923                         case DT_MIPS_TIME_STAMP:
 924                                 return "MIPS_TIME_STAMP";
 925                         case DT_MIPS_ICHECKSUM:
 926                                 return "MIPS_ICHECKSUM";
 927                         case DT_MIPS_IVERSION:
 928                                 return "MIPS_IVERSION";
 929                         case DT_MIPS_FLAGS:
 930                                 return "MIPS_FLAGS";
 931                         case DT_MIPS_BASE_ADDRESS:
 932                                 return "MIPS_BASE_ADDRESS";
 933                         case DT_MIPS_CONFLICT:
 934                                 return "MIPS_CONFLICT";
 935                         case DT_MIPS_LIBLIST:
 936                                 return "MIPS_LIBLIST";
 937                         case DT_MIPS_LOCAL_GOTNO:
 938                                 return "MIPS_LOCAL_GOTNO";
 939                         case DT_MIPS_CONFLICTNO:
 940                                 return "MIPS_CONFLICTNO";
 941                         case DT_MIPS_LIBLISTNO:
 942                                 return "MIPS_LIBLISTNO";
 943                         case DT_MIPS_SYMTABNO:
 944                                 return "MIPS_SYMTABNO";
 945                         case DT_MIPS_UNREFEXTNO:
 946                                 return "MIPS_UNREFEXTNO";
 947                         case DT_MIPS_GOTSYM:
 948                                 return "MIPS_GOTSYM";
 949                         case DT_MIPS_HIPAGENO:
 950                                 return "MIPS_HIPAGENO";
 951                         case DT_MIPS_RLD_MAP:
 952                                 return "MIPS_RLD_MAP";
 953                         case DT_MIPS_DELTA_CLASS:
 954                                 return "MIPS_DELTA_CLASS";
 955                         case DT_MIPS_DELTA_CLASS_NO:
 956                                 return "MIPS_DELTA_CLASS_NO";
 957                         case DT_MIPS_DELTA_INSTANCE:
 958                                 return "MIPS_DELTA_INSTANCE";
 959                         case DT_MIPS_DELTA_INSTANCE_NO:
 960                                 return "MIPS_DELTA_INSTANCE_NO";
 961                         case DT_MIPS_DELTA_RELOC:
 962                                 return "MIPS_DELTA_RELOC";
 963                         case DT_MIPS_DELTA_RELOC_NO:
 964                                 return "MIPS_DELTA_RELOC_NO";
 965                         case DT_MIPS_DELTA_SYM:
 966                                 return "MIPS_DELTA_SYM";
 967                         case DT_MIPS_DELTA_SYM_NO:
 968                                 return "MIPS_DELTA_SYM_NO";
 969                         case DT_MIPS_DELTA_CLASSSYM:
 970                                 return "MIPS_DELTA_CLASSSYM";
 971                         case DT_MIPS_DELTA_CLASSSYM_NO:
 972                                 return "MIPS_DELTA_CLASSSYM_NO";
 973                         case DT_MIPS_CXX_FLAGS:
 974                                 return "MIPS_CXX_FLAGS";
 975                         case DT_MIPS_PIXIE_INIT:
 976                                 return "MIPS_PIXIE_INIT";
 977                         case DT_MIPS_SYMBOL_LIB:
 978                                 return "MIPS_SYMBOL_LIB";
 979                         case DT_MIPS_LOCALPAGE_GOTIDX:
 980                                 return "MIPS_LOCALPAGE_GOTIDX";
 981                         case DT_MIPS_LOCAL_GOTIDX:
 982                                 return "MIPS_LOCAL_GOTIDX";
 983                         case DT_MIPS_HIDDEN_GOTIDX:
 984                                 return "MIPS_HIDDEN_GOTIDX";
 985                         case DT_MIPS_PROTECTED_GOTIDX:
 986                                 return "MIPS_PROTECTED_GOTIDX";
 987                         case DT_MIPS_OPTIONS:
 988                                 return "MIPS_OPTIONS";
 989                         case DT_MIPS_INTERFACE:
 990                                 return "MIPS_INTERFACE";
 991                         case DT_MIPS_DYNSTR_ALIGN:
 992                                 return "MIPS_DYNSTR_ALIGN";
 993                         case DT_MIPS_INTERFACE_SIZE:
 994                                 return "MIPS_INTERFACE_SIZE";
 995                         case DT_MIPS_RLD_TEXT_RESOLVE_ADDR:
 996                                 return "MIPS_RLD_TEXT_RESOLVE_ADDR";
 997                         case DT_MIPS_PERF_SUFFIX:
 998                                 return "MIPS_PERF_SUFFIX";
 999                         case DT_MIPS_COMPACT_SIZE:
1000                                 return "MIPS_COMPACT_SIZE";
1001                         case DT_MIPS_GP_VALUE:
1002                                 return "MIPS_GP_VALUE";
1003                         case DT_MIPS_AUX_DYNAMIC:
1004                                 return "MIPS_AUX_DYNAMIC";
1005                         case DT_MIPS_PLTGOT:
1006                                 return "MIPS_PLTGOT";
1007                         case DT_MIPS_RLD_OBJ_UPDATE:
1008                                 return "MIPS_RLD_OBJ_UPDATE";
1009                         case DT_MIPS_RWPLT:
1010                                 return "MIPS_RWPLT";
1011                         default:
1012                                 break;
1013                         }
1014                         break;
1015                 case EM_SPARC:
1016                 case EM_SPARC32PLUS:
1017                 case EM_SPARCV9:
1018                         switch (dtype) {
1019                         case DT_SPARC_REGISTER:
1020                                 return "DT_SPARC_REGISTER";
1021                         default:
1022                                 break;
1023                         }
1024                         break;
1025                 default:
1026                         break;
1027                 }
1028         }
1029
1030         snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype);
1031         return (s_dtype);
1032 }
1033
1034 static const char *
1035 st_bind(unsigned int sbind)
1036 {
1037         static char s_sbind[32];
1038
1039         switch (sbind) {
1040         case STB_LOCAL: return "LOCAL";
1041         case STB_GLOBAL: return "GLOBAL";
1042         case STB_WEAK: return "WEAK";
1043         case STB_GNU_UNIQUE: return "UNIQUE";
1044         default:
1045                 if (sbind >= STB_LOOS && sbind <= STB_HIOS)
1046                         return "OS";
1047                 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC)
1048                         return "PROC";
1049                 else
1050                         snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>",
1051                             sbind);
1052                 return (s_sbind);
1053         }
1054 }
1055
1056 static const char *
1057 st_type(unsigned int mach, unsigned int os, unsigned int stype)
1058 {
1059         static char s_stype[32];
1060
1061         switch (stype) {
1062         case STT_NOTYPE: return "NOTYPE";
1063         case STT_OBJECT: return "OBJECT";
1064         case STT_FUNC: return "FUNC";
1065         case STT_SECTION: return "SECTION";
1066         case STT_FILE: return "FILE";
1067         case STT_COMMON: return "COMMON";
1068         case STT_TLS: return "TLS";
1069         default:
1070                 if (stype >= STT_LOOS && stype <= STT_HIOS) {
1071                         if ((os == ELFOSABI_GNU || os == ELFOSABI_FREEBSD) &&
1072                             stype == STT_GNU_IFUNC)
1073                                 return "IFUNC";
1074                         snprintf(s_stype, sizeof(s_stype), "OS+%#x",
1075                             stype - STT_LOOS);
1076                 } else if (stype >= STT_LOPROC && stype <= STT_HIPROC) {
1077                         if (mach == EM_SPARCV9 && stype == STT_SPARC_REGISTER)
1078                                 return "REGISTER";
1079                         snprintf(s_stype, sizeof(s_stype), "PROC+%#x",
1080                             stype - STT_LOPROC);
1081                 } else
1082                         snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>",
1083                             stype);
1084                 return (s_stype);
1085         }
1086 }
1087
1088 static const char *
1089 st_vis(unsigned int svis)
1090 {
1091         static char s_svis[32];
1092
1093         switch(svis) {
1094         case STV_DEFAULT: return "DEFAULT";
1095         case STV_INTERNAL: return "INTERNAL";
1096         case STV_HIDDEN: return "HIDDEN";
1097         case STV_PROTECTED: return "PROTECTED";
1098         default:
1099                 snprintf(s_svis, sizeof(s_svis), "<unknown: %#x>", svis);
1100                 return (s_svis);
1101         }
1102 }
1103
1104 static const char *
1105 st_shndx(unsigned int shndx)
1106 {
1107         static char s_shndx[32];
1108
1109         switch (shndx) {
1110         case SHN_UNDEF: return "UND";
1111         case SHN_ABS: return "ABS";
1112         case SHN_COMMON: return "COM";
1113         default:
1114                 if (shndx >= SHN_LOPROC && shndx <= SHN_HIPROC)
1115                         return "PRC";
1116                 else if (shndx >= SHN_LOOS && shndx <= SHN_HIOS)
1117                         return "OS";
1118                 else
1119                         snprintf(s_shndx, sizeof(s_shndx), "%u", shndx);
1120                 return (s_shndx);
1121         }
1122 }
1123
1124 static struct {
1125         const char *ln;
1126         char sn;
1127         int value;
1128 } section_flag[] = {
1129         {"WRITE", 'W', SHF_WRITE},
1130         {"ALLOC", 'A', SHF_ALLOC},
1131         {"EXEC", 'X', SHF_EXECINSTR},
1132         {"MERGE", 'M', SHF_MERGE},
1133         {"STRINGS", 'S', SHF_STRINGS},
1134         {"INFO LINK", 'I', SHF_INFO_LINK},
1135         {"OS NONCONF", 'O', SHF_OS_NONCONFORMING},
1136         {"GROUP", 'G', SHF_GROUP},
1137         {"TLS", 'T', SHF_TLS},
1138         {"COMPRESSED", 'C', SHF_COMPRESSED},
1139         {NULL, 0, 0}
1140 };
1141
1142 static const char *
1143 note_type(const char *name, unsigned int et, unsigned int nt)
1144 {
1145         if ((strcmp(name, "CORE") == 0 || strcmp(name, "LINUX") == 0) &&
1146             et == ET_CORE)
1147                 return note_type_linux_core(nt);
1148         else if (strcmp(name, "FreeBSD") == 0)
1149                 if (et == ET_CORE)
1150                         return note_type_freebsd_core(nt);
1151                 else
1152                         return note_type_freebsd(nt);
1153         else if (strcmp(name, "GNU") == 0 && et != ET_CORE)
1154                 return note_type_gnu(nt);
1155         else if (strcmp(name, "Go") == 0 && et != ET_CORE)
1156                 return note_type_go(nt);
1157         else if (strcmp(name, "NetBSD") == 0 && et != ET_CORE)
1158                 return note_type_netbsd(nt);
1159         else if (strcmp(name, "OpenBSD") == 0 && et != ET_CORE)
1160                 return note_type_openbsd(nt);
1161         else if (strcmp(name, "Xen") == 0 && et != ET_CORE)
1162                 return note_type_xen(nt);
1163         return note_type_unknown(nt);
1164 }
1165
1166 static const char *
1167 note_type_freebsd(unsigned int nt)
1168 {
1169         switch (nt) {
1170         case 1: return "NT_FREEBSD_ABI_TAG";
1171         case 2: return "NT_FREEBSD_NOINIT_TAG";
1172         case 3: return "NT_FREEBSD_ARCH_TAG";
1173         case 4: return "NT_FREEBSD_FEATURE_CTL";
1174         default: return (note_type_unknown(nt));
1175         }
1176 }
1177
1178 static const char *
1179 note_type_freebsd_core(unsigned int nt)
1180 {
1181         switch (nt) {
1182         case 1: return "NT_PRSTATUS";
1183         case 2: return "NT_FPREGSET";
1184         case 3: return "NT_PRPSINFO";
1185         case 7: return "NT_THRMISC";
1186         case 8: return "NT_PROCSTAT_PROC";
1187         case 9: return "NT_PROCSTAT_FILES";
1188         case 10: return "NT_PROCSTAT_VMMAP";
1189         case 11: return "NT_PROCSTAT_GROUPS";
1190         case 12: return "NT_PROCSTAT_UMASK";
1191         case 13: return "NT_PROCSTAT_RLIMIT";
1192         case 14: return "NT_PROCSTAT_OSREL";
1193         case 15: return "NT_PROCSTAT_PSSTRINGS";
1194         case 16: return "NT_PROCSTAT_AUXV";
1195         case 17: return "NT_PTLWPINFO";
1196         case 0x100: return "NT_PPC_VMX (ppc Altivec registers)";
1197         case 0x102: return "NT_PPC_VSX (ppc VSX registers)";
1198         case 0x200: return "NT_X86_SEGBASES (x86 segment base registers)";
1199         case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)";
1200         case 0x400: return "NT_ARM_VFP (arm VFP registers)";
1201         case 0x401: return "NT_ARM_TLS (arm TLS register)";
1202         case 0x406: return "NT_ARM_ADDR_MASK (arm address mask)";
1203         default: return (note_type_unknown(nt));
1204         }
1205 }
1206
1207 static const char *
1208 note_type_linux_core(unsigned int nt)
1209 {
1210         switch (nt) {
1211         case 1: return "NT_PRSTATUS (Process status)";
1212         case 2: return "NT_FPREGSET (Floating point information)";
1213         case 3: return "NT_PRPSINFO (Process information)";
1214         case 4: return "NT_TASKSTRUCT (Task structure)";
1215         case 6: return "NT_AUXV (Auxiliary vector)";
1216         case 10: return "NT_PSTATUS (Linux process status)";
1217         case 12: return "NT_FPREGS (Linux floating point regset)";
1218         case 13: return "NT_PSINFO (Linux process information)";
1219         case 16: return "NT_LWPSTATUS (Linux lwpstatus_t type)";
1220         case 17: return "NT_LWPSINFO (Linux lwpinfo_t type)";
1221         case 18: return "NT_WIN32PSTATUS (win32_pstatus structure)";
1222         case 0x100: return "NT_PPC_VMX (ppc Altivec registers)";
1223         case 0x102: return "NT_PPC_VSX (ppc VSX registers)";
1224         case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)";
1225         case 0x300: return "NT_S390_HIGH_GPRS (s390 upper register halves)";
1226         case 0x301: return "NT_S390_TIMER (s390 timer register)";
1227         case 0x302: return "NT_S390_TODCMP (s390 TOD comparator register)";
1228         case 0x303: return "NT_S390_TODPREG (s390 TOD programmable register)";
1229         case 0x304: return "NT_S390_CTRS (s390 control registers)";
1230         case 0x305: return "NT_S390_PREFIX (s390 prefix register)";
1231         case 0x400: return "NT_ARM_VFP (arm VFP registers)";
1232         case 0x401: return "NT_ARM_TLS (arm TLS register)";
1233         case 0x402: return "NT_ARM_HW_BREAK (arm hardware breakpoint registers)";
1234         case 0x403: return "NT_ARM_HW_WATCH (arm hardware watchpoint registers)";
1235         case 0x404: return "NT_ARM_SYSTEM_CALL (arm system call number)";
1236         case 0x405: return "NT_ARM_SVE (arm scalable vector extension registers)";
1237         case 0x406: return "NT_ARM_PAC_MASK (arm pointer authentication code mask)";
1238         case 0x407: return "NT_ARM_PACA_KEYS (arm pointer authentication address keys)";
1239         case 0x408: return "NT_ARM_PACG_KEYS (arm pointer authentication generic keys)";
1240         case 0x409: return "NT_ARM_TAGGED_ADDR_CTRL (arm64 tagged address control)";
1241         case 0x40a: return "NT_ARM_PAC_ENABLED_KEYS (arm64 ptr auth enabled keys)";
1242         case 0x46494c45UL: return "NT_FILE (mapped files)";
1243         case 0x46E62B7FUL: return "NT_PRXFPREG (Linux user_xfpregs structure)";
1244         case 0x53494749UL: return "NT_SIGINFO (siginfo_t data)";
1245         default: return (note_type_unknown(nt));
1246         }
1247 }
1248
1249 static const char *
1250 note_type_gnu(unsigned int nt)
1251 {
1252         switch (nt) {
1253         case 1: return "NT_GNU_ABI_TAG";
1254         case 2: return "NT_GNU_HWCAP (Hardware capabilities)";
1255         case 3: return "NT_GNU_BUILD_ID (Build id set by ld(1))";
1256         case 4: return "NT_GNU_GOLD_VERSION (GNU gold version)";
1257         case 5: return "NT_GNU_PROPERTY_TYPE_0";
1258         default: return (note_type_unknown(nt));
1259         }
1260 }
1261
1262 static const char *
1263 note_type_go(unsigned int nt)
1264 {
1265         switch (nt) {
1266         case 4: return "elfGoBuildIDTag";
1267         default: return (note_type_unknown(nt));
1268         }
1269 }
1270
1271 static const char *
1272 note_type_netbsd(unsigned int nt)
1273 {
1274         switch (nt) {
1275         case 1: return "NT_NETBSD_IDENT";
1276         default: return (note_type_unknown(nt));
1277         }
1278 }
1279
1280 static const char *
1281 note_type_openbsd(unsigned int nt)
1282 {
1283         switch (nt) {
1284         case 1: return "NT_OPENBSD_IDENT";
1285         default: return (note_type_unknown(nt));
1286         }
1287 }
1288
1289 static const char *
1290 note_type_unknown(unsigned int nt)
1291 {
1292         static char s_nt[32];
1293
1294         snprintf(s_nt, sizeof(s_nt),
1295             nt >= 0x100 ? "<unknown: 0x%x>" : "<unknown: %u>", nt);
1296         return (s_nt);
1297 }
1298
1299 static const char *
1300 note_type_xen(unsigned int nt)
1301 {
1302         switch (nt) {
1303         case 0: return "XEN_ELFNOTE_INFO";
1304         case 1: return "XEN_ELFNOTE_ENTRY";
1305         case 2: return "XEN_ELFNOTE_HYPERCALL_PAGE";
1306         case 3: return "XEN_ELFNOTE_VIRT_BASE";
1307         case 4: return "XEN_ELFNOTE_PADDR_OFFSET";
1308         case 5: return "XEN_ELFNOTE_XEN_VERSION";
1309         case 6: return "XEN_ELFNOTE_GUEST_OS";
1310         case 7: return "XEN_ELFNOTE_GUEST_VERSION";
1311         case 8: return "XEN_ELFNOTE_LOADER";
1312         case 9: return "XEN_ELFNOTE_PAE_MODE";
1313         case 10: return "XEN_ELFNOTE_FEATURES";
1314         case 11: return "XEN_ELFNOTE_BSD_SYMTAB";
1315         case 12: return "XEN_ELFNOTE_HV_START_LOW";
1316         case 13: return "XEN_ELFNOTE_L1_MFN_VALID";
1317         case 14: return "XEN_ELFNOTE_SUSPEND_CANCEL";
1318         case 15: return "XEN_ELFNOTE_INIT_P2M";
1319         case 16: return "XEN_ELFNOTE_MOD_START_PFN";
1320         case 17: return "XEN_ELFNOTE_SUPPORTED_FEATURES";
1321         case 18: return "XEN_ELFNOTE_PHYS32_ENTRY";
1322         default: return (note_type_unknown(nt));
1323         }
1324 }
1325
1326 static struct {
1327         const char *name;
1328         int value;
1329 } l_flag[] = {
1330         {"EXACT_MATCH", LL_EXACT_MATCH},
1331         {"IGNORE_INT_VER", LL_IGNORE_INT_VER},
1332         {"REQUIRE_MINOR", LL_REQUIRE_MINOR},
1333         {"EXPORTS", LL_EXPORTS},
1334         {"DELAY_LOAD", LL_DELAY_LOAD},
1335         {"DELTA", LL_DELTA},
1336         {NULL, 0}
1337 };
1338
1339 static struct mips_option mips_exceptions_option[] = {
1340         {OEX_PAGE0, "PAGE0"},
1341         {OEX_SMM, "SMM"},
1342         {OEX_PRECISEFP, "PRECISEFP"},
1343         {OEX_DISMISS, "DISMISS"},
1344         {0, NULL}
1345 };
1346
1347 static struct mips_option mips_pad_option[] = {
1348         {OPAD_PREFIX, "PREFIX"},
1349         {OPAD_POSTFIX, "POSTFIX"},
1350         {OPAD_SYMBOL, "SYMBOL"},
1351         {0, NULL}
1352 };
1353
1354 static struct mips_option mips_hwpatch_option[] = {
1355         {OHW_R4KEOP, "R4KEOP"},
1356         {OHW_R8KPFETCH, "R8KPFETCH"},
1357         {OHW_R5KEOP, "R5KEOP"},
1358         {OHW_R5KCVTL, "R5KCVTL"},
1359         {0, NULL}
1360 };
1361
1362 static struct mips_option mips_hwa_option[] = {
1363         {OHWA0_R4KEOP_CHECKED, "R4KEOP_CHECKED"},
1364         {OHWA0_R4KEOP_CLEAN, "R4KEOP_CLEAN"},
1365         {0, NULL}
1366 };
1367
1368 static struct mips_option mips_hwo_option[] = {
1369         {OHWO0_FIXADE, "FIXADE"},
1370         {0, NULL}
1371 };
1372
1373 static const char *
1374 option_kind(uint8_t kind)
1375 {
1376         static char s_kind[32];
1377
1378         switch (kind) {
1379         case ODK_NULL: return "NULL";
1380         case ODK_REGINFO: return "REGINFO";
1381         case ODK_EXCEPTIONS: return "EXCEPTIONS";
1382         case ODK_PAD: return "PAD";
1383         case ODK_HWPATCH: return "HWPATCH";
1384         case ODK_FILL: return "FILL";
1385         case ODK_TAGS: return "TAGS";
1386         case ODK_HWAND: return "HWAND";
1387         case ODK_HWOR: return "HWOR";
1388         case ODK_GP_GROUP: return "GP_GROUP";
1389         case ODK_IDENT: return "IDENT";
1390         default:
1391                 snprintf(s_kind, sizeof(s_kind), "<unknown: %u>", kind);
1392                 return (s_kind);
1393         }
1394 }
1395
1396 static const char *
1397 top_tag(unsigned int tag)
1398 {
1399         static char s_top_tag[32];
1400
1401         switch (tag) {
1402         case 1: return "File Attributes";
1403         case 2: return "Section Attributes";
1404         case 3: return "Symbol Attributes";
1405         default:
1406                 snprintf(s_top_tag, sizeof(s_top_tag), "Unknown tag: %u", tag);
1407                 return (s_top_tag);
1408         }
1409 }
1410
1411 static const char *
1412 aeabi_cpu_arch(uint64_t arch)
1413 {
1414         static char s_cpu_arch[32];
1415
1416         switch (arch) {
1417         case 0: return "Pre-V4";
1418         case 1: return "ARM v4";
1419         case 2: return "ARM v4T";
1420         case 3: return "ARM v5T";
1421         case 4: return "ARM v5TE";
1422         case 5: return "ARM v5TEJ";
1423         case 6: return "ARM v6";
1424         case 7: return "ARM v6KZ";
1425         case 8: return "ARM v6T2";
1426         case 9: return "ARM v6K";
1427         case 10: return "ARM v7";
1428         case 11: return "ARM v6-M";
1429         case 12: return "ARM v6S-M";
1430         case 13: return "ARM v7E-M";
1431         default:
1432                 snprintf(s_cpu_arch, sizeof(s_cpu_arch),
1433                     "Unknown (%ju)", (uintmax_t) arch);
1434                 return (s_cpu_arch);
1435         }
1436 }
1437
1438 static const char *
1439 aeabi_cpu_arch_profile(uint64_t pf)
1440 {
1441         static char s_arch_profile[32];
1442
1443         switch (pf) {
1444         case 0:
1445                 return "Not applicable";
1446         case 0x41:              /* 'A' */
1447                 return "Application Profile";
1448         case 0x52:              /* 'R' */
1449                 return "Real-Time Profile";
1450         case 0x4D:              /* 'M' */
1451                 return "Microcontroller Profile";
1452         case 0x53:              /* 'S' */
1453                 return "Application or Real-Time Profile";
1454         default:
1455                 snprintf(s_arch_profile, sizeof(s_arch_profile),
1456                     "Unknown (%ju)\n", (uintmax_t) pf);
1457                 return (s_arch_profile);
1458         }
1459 }
1460
1461 static const char *
1462 aeabi_arm_isa(uint64_t ai)
1463 {
1464         static char s_ai[32];
1465
1466         switch (ai) {
1467         case 0: return "No";
1468         case 1: return "Yes";
1469         default:
1470                 snprintf(s_ai, sizeof(s_ai), "Unknown (%ju)\n",
1471                     (uintmax_t) ai);
1472                 return (s_ai);
1473         }
1474 }
1475
1476 static const char *
1477 aeabi_thumb_isa(uint64_t ti)
1478 {
1479         static char s_ti[32];
1480
1481         switch (ti) {
1482         case 0: return "No";
1483         case 1: return "16-bit Thumb";
1484         case 2: return "32-bit Thumb";
1485         default:
1486                 snprintf(s_ti, sizeof(s_ti), "Unknown (%ju)\n",
1487                     (uintmax_t) ti);
1488                 return (s_ti);
1489         }
1490 }
1491
1492 static const char *
1493 aeabi_fp_arch(uint64_t fp)
1494 {
1495         static char s_fp_arch[32];
1496
1497         switch (fp) {
1498         case 0: return "No";
1499         case 1: return "VFPv1";
1500         case 2: return "VFPv2";
1501         case 3: return "VFPv3";
1502         case 4: return "VFPv3-D16";
1503         case 5: return "VFPv4";
1504         case 6: return "VFPv4-D16";
1505         default:
1506                 snprintf(s_fp_arch, sizeof(s_fp_arch), "Unknown (%ju)",
1507                     (uintmax_t) fp);
1508                 return (s_fp_arch);
1509         }
1510 }
1511
1512 static const char *
1513 aeabi_wmmx_arch(uint64_t wmmx)
1514 {
1515         static char s_wmmx[32];
1516
1517         switch (wmmx) {
1518         case 0: return "No";
1519         case 1: return "WMMXv1";
1520         case 2: return "WMMXv2";
1521         default:
1522                 snprintf(s_wmmx, sizeof(s_wmmx), "Unknown (%ju)",
1523                     (uintmax_t) wmmx);
1524                 return (s_wmmx);
1525         }
1526 }
1527
1528 static const char *
1529 aeabi_adv_simd_arch(uint64_t simd)
1530 {
1531         static char s_simd[32];
1532
1533         switch (simd) {
1534         case 0: return "No";
1535         case 1: return "NEONv1";
1536         case 2: return "NEONv2";
1537         default:
1538                 snprintf(s_simd, sizeof(s_simd), "Unknown (%ju)",
1539                     (uintmax_t) simd);
1540                 return (s_simd);
1541         }
1542 }
1543
1544 static const char *
1545 aeabi_pcs_config(uint64_t pcs)
1546 {
1547         static char s_pcs[32];
1548
1549         switch (pcs) {
1550         case 0: return "None";
1551         case 1: return "Bare platform";
1552         case 2: return "Linux";
1553         case 3: return "Linux DSO";
1554         case 4: return "Palm OS 2004";
1555         case 5: return "Palm OS (future)";
1556         case 6: return "Symbian OS 2004";
1557         case 7: return "Symbian OS (future)";
1558         default:
1559                 snprintf(s_pcs, sizeof(s_pcs), "Unknown (%ju)",
1560                     (uintmax_t) pcs);
1561                 return (s_pcs);
1562         }
1563 }
1564
1565 static const char *
1566 aeabi_pcs_r9(uint64_t r9)
1567 {
1568         static char s_r9[32];
1569
1570         switch (r9) {
1571         case 0: return "V6";
1572         case 1: return "SB";
1573         case 2: return "TLS pointer";
1574         case 3: return "Unused";
1575         default:
1576                 snprintf(s_r9, sizeof(s_r9), "Unknown (%ju)", (uintmax_t) r9);
1577                 return (s_r9);
1578         }
1579 }
1580
1581 static const char *
1582 aeabi_pcs_rw(uint64_t rw)
1583 {
1584         static char s_rw[32];
1585
1586         switch (rw) {
1587         case 0: return "Absolute";
1588         case 1: return "PC-relative";
1589         case 2: return "SB-relative";
1590         case 3: return "None";
1591         default:
1592                 snprintf(s_rw, sizeof(s_rw), "Unknown (%ju)", (uintmax_t) rw);
1593                 return (s_rw);
1594         }
1595 }
1596
1597 static const char *
1598 aeabi_pcs_ro(uint64_t ro)
1599 {
1600         static char s_ro[32];
1601
1602         switch (ro) {
1603         case 0: return "Absolute";
1604         case 1: return "PC-relative";
1605         case 2: return "None";
1606         default:
1607                 snprintf(s_ro, sizeof(s_ro), "Unknown (%ju)", (uintmax_t) ro);
1608                 return (s_ro);
1609         }
1610 }
1611
1612 static const char *
1613 aeabi_pcs_got(uint64_t got)
1614 {
1615         static char s_got[32];
1616
1617         switch (got) {
1618         case 0: return "None";
1619         case 1: return "direct";
1620         case 2: return "indirect via GOT";
1621         default:
1622                 snprintf(s_got, sizeof(s_got), "Unknown (%ju)",
1623                     (uintmax_t) got);
1624                 return (s_got);
1625         }
1626 }
1627
1628 static const char *
1629 aeabi_pcs_wchar_t(uint64_t wt)
1630 {
1631         static char s_wt[32];
1632
1633         switch (wt) {
1634         case 0: return "None";
1635         case 2: return "wchar_t size 2";
1636         case 4: return "wchar_t size 4";
1637         default:
1638                 snprintf(s_wt, sizeof(s_wt), "Unknown (%ju)", (uintmax_t) wt);
1639                 return (s_wt);
1640         }
1641 }
1642
1643 static const char *
1644 aeabi_enum_size(uint64_t es)
1645 {
1646         static char s_es[32];
1647
1648         switch (es) {
1649         case 0: return "None";
1650         case 1: return "smallest";
1651         case 2: return "32-bit";
1652         case 3: return "visible 32-bit";
1653         default:
1654                 snprintf(s_es, sizeof(s_es), "Unknown (%ju)", (uintmax_t) es);
1655                 return (s_es);
1656         }
1657 }
1658
1659 static const char *
1660 aeabi_align_needed(uint64_t an)
1661 {
1662         static char s_align_n[64];
1663
1664         switch (an) {
1665         case 0: return "No";
1666         case 1: return "8-byte align";
1667         case 2: return "4-byte align";
1668         case 3: return "Reserved";
1669         default:
1670                 if (an >= 4 && an <= 12)
1671                         snprintf(s_align_n, sizeof(s_align_n), "8-byte align"
1672                             " and up to 2^%ju-byte extended align",
1673                             (uintmax_t) an);
1674                 else
1675                         snprintf(s_align_n, sizeof(s_align_n), "Unknown (%ju)",
1676                             (uintmax_t) an);
1677                 return (s_align_n);
1678         }
1679 }
1680
1681 static const char *
1682 aeabi_align_preserved(uint64_t ap)
1683 {
1684         static char s_align_p[128];
1685
1686         switch (ap) {
1687         case 0: return "No";
1688         case 1: return "8-byte align";
1689         case 2: return "8-byte align and SP % 8 == 0";
1690         case 3: return "Reserved";
1691         default:
1692                 if (ap >= 4 && ap <= 12)
1693                         snprintf(s_align_p, sizeof(s_align_p), "8-byte align"
1694                             " and SP %% 8 == 0 and up to 2^%ju-byte extended"
1695                             " align", (uintmax_t) ap);
1696                 else
1697                         snprintf(s_align_p, sizeof(s_align_p), "Unknown (%ju)",
1698                             (uintmax_t) ap);
1699                 return (s_align_p);
1700         }
1701 }
1702
1703 static const char *
1704 aeabi_fp_rounding(uint64_t fr)
1705 {
1706         static char s_fp_r[32];
1707
1708         switch (fr) {
1709         case 0: return "Unused";
1710         case 1: return "Needed";
1711         default:
1712                 snprintf(s_fp_r, sizeof(s_fp_r), "Unknown (%ju)",
1713                     (uintmax_t) fr);
1714                 return (s_fp_r);
1715         }
1716 }
1717
1718 static const char *
1719 aeabi_fp_denormal(uint64_t fd)
1720 {
1721         static char s_fp_d[32];
1722
1723         switch (fd) {
1724         case 0: return "Unused";
1725         case 1: return "Needed";
1726         case 2: return "Sign Only";
1727         default:
1728                 snprintf(s_fp_d, sizeof(s_fp_d), "Unknown (%ju)",
1729                     (uintmax_t) fd);
1730                 return (s_fp_d);
1731         }
1732 }
1733
1734 static const char *
1735 aeabi_fp_exceptions(uint64_t fe)
1736 {
1737         static char s_fp_e[32];
1738
1739         switch (fe) {
1740         case 0: return "Unused";
1741         case 1: return "Needed";
1742         default:
1743                 snprintf(s_fp_e, sizeof(s_fp_e), "Unknown (%ju)",
1744                     (uintmax_t) fe);
1745                 return (s_fp_e);
1746         }
1747 }
1748
1749 static const char *
1750 aeabi_fp_user_exceptions(uint64_t fu)
1751 {
1752         static char s_fp_u[32];
1753
1754         switch (fu) {
1755         case 0: return "Unused";
1756         case 1: return "Needed";
1757         default:
1758                 snprintf(s_fp_u, sizeof(s_fp_u), "Unknown (%ju)",
1759                     (uintmax_t) fu);
1760                 return (s_fp_u);
1761         }
1762 }
1763
1764 static const char *
1765 aeabi_fp_number_model(uint64_t fn)
1766 {
1767         static char s_fp_n[32];
1768
1769         switch (fn) {
1770         case 0: return "Unused";
1771         case 1: return "IEEE 754 normal";
1772         case 2: return "RTABI";
1773         case 3: return "IEEE 754";
1774         default:
1775                 snprintf(s_fp_n, sizeof(s_fp_n), "Unknown (%ju)",
1776                     (uintmax_t) fn);
1777                 return (s_fp_n);
1778         }
1779 }
1780
1781 static const char *
1782 aeabi_fp_16bit_format(uint64_t fp16)
1783 {
1784         static char s_fp_16[64];
1785
1786         switch (fp16) {
1787         case 0: return "None";
1788         case 1: return "IEEE 754";
1789         case 2: return "VFPv3/Advanced SIMD (alternative format)";
1790         default:
1791                 snprintf(s_fp_16, sizeof(s_fp_16), "Unknown (%ju)",
1792                     (uintmax_t) fp16);
1793                 return (s_fp_16);
1794         }
1795 }
1796
1797 static const char *
1798 aeabi_mpext(uint64_t mp)
1799 {
1800         static char s_mp[32];
1801
1802         switch (mp) {
1803         case 0: return "Not allowed";
1804         case 1: return "Allowed";
1805         default:
1806                 snprintf(s_mp, sizeof(s_mp), "Unknown (%ju)",
1807                     (uintmax_t) mp);
1808                 return (s_mp);
1809         }
1810 }
1811
1812 static const char *
1813 aeabi_div(uint64_t du)
1814 {
1815         static char s_du[32];
1816
1817         switch (du) {
1818         case 0: return "Yes (V7-R/V7-M)";
1819         case 1: return "No";
1820         case 2: return "Yes (V7-A)";
1821         default:
1822                 snprintf(s_du, sizeof(s_du), "Unknown (%ju)",
1823                     (uintmax_t) du);
1824                 return (s_du);
1825         }
1826 }
1827
1828 static const char *
1829 aeabi_t2ee(uint64_t t2ee)
1830 {
1831         static char s_t2ee[32];
1832
1833         switch (t2ee) {
1834         case 0: return "Not allowed";
1835         case 1: return "Allowed";
1836         default:
1837                 snprintf(s_t2ee, sizeof(s_t2ee), "Unknown(%ju)",
1838                     (uintmax_t) t2ee);
1839                 return (s_t2ee);
1840         }
1841
1842 }
1843
1844 static const char *
1845 aeabi_hardfp(uint64_t hfp)
1846 {
1847         static char s_hfp[32];
1848
1849         switch (hfp) {
1850         case 0: return "Tag_FP_arch";
1851         case 1: return "only SP";
1852         case 2: return "only DP";
1853         case 3: return "both SP and DP";
1854         default:
1855                 snprintf(s_hfp, sizeof(s_hfp), "Unknown (%ju)",
1856                     (uintmax_t) hfp);
1857                 return (s_hfp);
1858         }
1859 }
1860
1861 static const char *
1862 aeabi_vfp_args(uint64_t va)
1863 {
1864         static char s_va[32];
1865
1866         switch (va) {
1867         case 0: return "AAPCS (base variant)";
1868         case 1: return "AAPCS (VFP variant)";
1869         case 2: return "toolchain-specific";
1870         default:
1871                 snprintf(s_va, sizeof(s_va), "Unknown (%ju)", (uintmax_t) va);
1872                 return (s_va);
1873         }
1874 }
1875
1876 static const char *
1877 aeabi_wmmx_args(uint64_t wa)
1878 {
1879         static char s_wa[32];
1880
1881         switch (wa) {
1882         case 0: return "AAPCS (base variant)";
1883         case 1: return "Intel WMMX";
1884         case 2: return "toolchain-specific";
1885         default:
1886                 snprintf(s_wa, sizeof(s_wa), "Unknown(%ju)", (uintmax_t) wa);
1887                 return (s_wa);
1888         }
1889 }
1890
1891 static const char *
1892 aeabi_unaligned_access(uint64_t ua)
1893 {
1894         static char s_ua[32];
1895
1896         switch (ua) {
1897         case 0: return "Not allowed";
1898         case 1: return "Allowed";
1899         default:
1900                 snprintf(s_ua, sizeof(s_ua), "Unknown(%ju)", (uintmax_t) ua);
1901                 return (s_ua);
1902         }
1903 }
1904
1905 static const char *
1906 aeabi_fp_hpext(uint64_t fh)
1907 {
1908         static char s_fh[32];
1909
1910         switch (fh) {
1911         case 0: return "Not allowed";
1912         case 1: return "Allowed";
1913         default:
1914                 snprintf(s_fh, sizeof(s_fh), "Unknown(%ju)", (uintmax_t) fh);
1915                 return (s_fh);
1916         }
1917 }
1918
1919 static const char *
1920 aeabi_optm_goal(uint64_t og)
1921 {
1922         static char s_og[32];
1923
1924         switch (og) {
1925         case 0: return "None";
1926         case 1: return "Speed";
1927         case 2: return "Speed aggressive";
1928         case 3: return "Space";
1929         case 4: return "Space aggressive";
1930         case 5: return "Debugging";
1931         case 6: return "Best Debugging";
1932         default:
1933                 snprintf(s_og, sizeof(s_og), "Unknown(%ju)", (uintmax_t) og);
1934                 return (s_og);
1935         }
1936 }
1937
1938 static const char *
1939 aeabi_fp_optm_goal(uint64_t fog)
1940 {
1941         static char s_fog[32];
1942
1943         switch (fog) {
1944         case 0: return "None";
1945         case 1: return "Speed";
1946         case 2: return "Speed aggressive";
1947         case 3: return "Space";
1948         case 4: return "Space aggressive";
1949         case 5: return "Accurary";
1950         case 6: return "Best Accurary";
1951         default:
1952                 snprintf(s_fog, sizeof(s_fog), "Unknown(%ju)",
1953                     (uintmax_t) fog);
1954                 return (s_fog);
1955         }
1956 }
1957
1958 static const char *
1959 aeabi_virtual(uint64_t vt)
1960 {
1961         static char s_virtual[64];
1962
1963         switch (vt) {
1964         case 0: return "No";
1965         case 1: return "TrustZone";
1966         case 2: return "Virtualization extension";
1967         case 3: return "TrustZone and virtualization extension";
1968         default:
1969                 snprintf(s_virtual, sizeof(s_virtual), "Unknown(%ju)",
1970                     (uintmax_t) vt);
1971                 return (s_virtual);
1972         }
1973 }
1974
1975 static struct {
1976         uint64_t tag;
1977         const char *s_tag;
1978         const char *(*get_desc)(uint64_t val);
1979 } aeabi_tags[] = {
1980         {4, "Tag_CPU_raw_name", NULL},
1981         {5, "Tag_CPU_name", NULL},
1982         {6, "Tag_CPU_arch", aeabi_cpu_arch},
1983         {7, "Tag_CPU_arch_profile", aeabi_cpu_arch_profile},
1984         {8, "Tag_ARM_ISA_use", aeabi_arm_isa},
1985         {9, "Tag_THUMB_ISA_use", aeabi_thumb_isa},
1986         {10, "Tag_FP_arch", aeabi_fp_arch},
1987         {11, "Tag_WMMX_arch", aeabi_wmmx_arch},
1988         {12, "Tag_Advanced_SIMD_arch", aeabi_adv_simd_arch},
1989         {13, "Tag_PCS_config", aeabi_pcs_config},
1990         {14, "Tag_ABI_PCS_R9_use", aeabi_pcs_r9},
1991         {15, "Tag_ABI_PCS_RW_data", aeabi_pcs_rw},
1992         {16, "Tag_ABI_PCS_RO_data", aeabi_pcs_ro},
1993         {17, "Tag_ABI_PCS_GOT_use", aeabi_pcs_got},
1994         {18, "Tag_ABI_PCS_wchar_t", aeabi_pcs_wchar_t},
1995         {19, "Tag_ABI_FP_rounding", aeabi_fp_rounding},
1996         {20, "Tag_ABI_FP_denormal", aeabi_fp_denormal},
1997         {21, "Tag_ABI_FP_exceptions", aeabi_fp_exceptions},
1998         {22, "Tag_ABI_FP_user_exceptions", aeabi_fp_user_exceptions},
1999         {23, "Tag_ABI_FP_number_model", aeabi_fp_number_model},
2000         {24, "Tag_ABI_align_needed", aeabi_align_needed},
2001         {25, "Tag_ABI_align_preserved", aeabi_align_preserved},
2002         {26, "Tag_ABI_enum_size", aeabi_enum_size},
2003         {27, "Tag_ABI_HardFP_use", aeabi_hardfp},
2004         {28, "Tag_ABI_VFP_args", aeabi_vfp_args},
2005         {29, "Tag_ABI_WMMX_args", aeabi_wmmx_args},
2006         {30, "Tag_ABI_optimization_goals", aeabi_optm_goal},
2007         {31, "Tag_ABI_FP_optimization_goals", aeabi_fp_optm_goal},
2008         {32, "Tag_compatibility", NULL},
2009         {34, "Tag_CPU_unaligned_access", aeabi_unaligned_access},
2010         {36, "Tag_FP_HP_extension", aeabi_fp_hpext},
2011         {38, "Tag_ABI_FP_16bit_format", aeabi_fp_16bit_format},
2012         {42, "Tag_MPextension_use", aeabi_mpext},
2013         {44, "Tag_DIV_use", aeabi_div},
2014         {64, "Tag_nodefaults", NULL},
2015         {65, "Tag_also_compatible_with", NULL},
2016         {66, "Tag_T2EE_use", aeabi_t2ee},
2017         {67, "Tag_conformance", NULL},
2018         {68, "Tag_Virtualization_use", aeabi_virtual},
2019         {70, "Tag_MPextension_use", aeabi_mpext},
2020 };
2021
2022 static const char *
2023 mips_abi_fp(uint64_t fp)
2024 {
2025         static char s_mips_abi_fp[64];
2026
2027         switch (fp) {
2028         case 0: return "N/A";
2029         case 1: return "Hard float (double precision)";
2030         case 2: return "Hard float (single precision)";
2031         case 3: return "Soft float";
2032         case 4: return "64-bit float (-mips32r2 -mfp64)";
2033         default:
2034                 snprintf(s_mips_abi_fp, sizeof(s_mips_abi_fp), "Unknown(%ju)",
2035                     (uintmax_t) fp);
2036                 return (s_mips_abi_fp);
2037         }
2038 }
2039
2040 static const char *
2041 ppc_abi_fp(uint64_t fp)
2042 {
2043         static char s_ppc_abi_fp[64];
2044
2045         switch (fp) {
2046         case 0: return "N/A";
2047         case 1: return "Hard float (double precision)";
2048         case 2: return "Soft float";
2049         case 3: return "Hard float (single precision)";
2050         default:
2051                 snprintf(s_ppc_abi_fp, sizeof(s_ppc_abi_fp), "Unknown(%ju)",
2052                     (uintmax_t) fp);
2053                 return (s_ppc_abi_fp);
2054         }
2055 }
2056
2057 static const char *
2058 ppc_abi_vector(uint64_t vec)
2059 {
2060         static char s_vec[64];
2061
2062         switch (vec) {
2063         case 0: return "N/A";
2064         case 1: return "Generic purpose registers";
2065         case 2: return "AltiVec registers";
2066         case 3: return "SPE registers";
2067         default:
2068                 snprintf(s_vec, sizeof(s_vec), "Unknown(%ju)", (uintmax_t) vec);
2069                 return (s_vec);
2070         }
2071 }
2072
2073 static const char *
2074 dwarf_reg(unsigned int mach, unsigned int reg)
2075 {
2076
2077         switch (mach) {
2078         case EM_386:
2079         case EM_IAMCU:
2080                 switch (reg) {
2081                 case 0: return "eax";
2082                 case 1: return "ecx";
2083                 case 2: return "edx";
2084                 case 3: return "ebx";
2085                 case 4: return "esp";
2086                 case 5: return "ebp";
2087                 case 6: return "esi";
2088                 case 7: return "edi";
2089                 case 8: return "eip";
2090                 case 9: return "eflags";
2091                 case 11: return "st0";
2092                 case 12: return "st1";
2093                 case 13: return "st2";
2094                 case 14: return "st3";
2095                 case 15: return "st4";
2096                 case 16: return "st5";
2097                 case 17: return "st6";
2098                 case 18: return "st7";
2099                 case 21: return "xmm0";
2100                 case 22: return "xmm1";
2101                 case 23: return "xmm2";
2102                 case 24: return "xmm3";
2103                 case 25: return "xmm4";
2104                 case 26: return "xmm5";
2105                 case 27: return "xmm6";
2106                 case 28: return "xmm7";
2107                 case 29: return "mm0";
2108                 case 30: return "mm1";
2109                 case 31: return "mm2";
2110                 case 32: return "mm3";
2111                 case 33: return "mm4";
2112                 case 34: return "mm5";
2113                 case 35: return "mm6";
2114                 case 36: return "mm7";
2115                 case 37: return "fcw";
2116                 case 38: return "fsw";
2117                 case 39: return "mxcsr";
2118                 case 40: return "es";
2119                 case 41: return "cs";
2120                 case 42: return "ss";
2121                 case 43: return "ds";
2122                 case 44: return "fs";
2123                 case 45: return "gs";
2124                 case 48: return "tr";
2125                 case 49: return "ldtr";
2126                 default: return (NULL);
2127                 }
2128         case EM_RISCV:
2129                 switch (reg) {
2130                 case 0: return "zero";
2131                 case 1: return "ra";
2132                 case 2: return "sp";
2133                 case 3: return "gp";
2134                 case 4: return "tp";
2135                 case 5: return "t0";
2136                 case 6: return "t1";
2137                 case 7: return "t2";
2138                 case 8: return "s0";
2139                 case 9: return "s1";
2140                 case 10: return "a0";
2141                 case 11: return "a1";
2142                 case 12: return "a2";
2143                 case 13: return "a3";
2144                 case 14: return "a4";
2145                 case 15: return "a5";
2146                 case 16: return "a6";
2147                 case 17: return "a7";
2148                 case 18: return "s2";
2149                 case 19: return "s3";
2150                 case 20: return "s4";
2151                 case 21: return "s5";
2152                 case 22: return "s6";
2153                 case 23: return "s7";
2154                 case 24: return "s8";
2155                 case 25: return "s9";
2156                 case 26: return "s10";
2157                 case 27: return "s11";
2158                 case 28: return "t3";
2159                 case 29: return "t4";
2160                 case 30: return "t5";
2161                 case 31: return "t6";
2162                 case 32: return "ft0";
2163                 case 33: return "ft1";
2164                 case 34: return "ft2";
2165                 case 35: return "ft3";
2166                 case 36: return "ft4";
2167                 case 37: return "ft5";
2168                 case 38: return "ft6";
2169                 case 39: return "ft7";
2170                 case 40: return "fs0";
2171                 case 41: return "fs1";
2172                 case 42: return "fa0";
2173                 case 43: return "fa1";
2174                 case 44: return "fa2";
2175                 case 45: return "fa3";
2176                 case 46: return "fa4";
2177                 case 47: return "fa5";
2178                 case 48: return "fa6";
2179                 case 49: return "fa7";
2180                 case 50: return "fs2";
2181                 case 51: return "fs3";
2182                 case 52: return "fs4";
2183                 case 53: return "fs5";
2184                 case 54: return "fs6";
2185                 case 55: return "fs7";
2186                 case 56: return "fs8";
2187                 case 57: return "fs9";
2188                 case 58: return "fs10";
2189                 case 59: return "fs11";
2190                 case 60: return "ft8";
2191                 case 61: return "ft9";
2192                 case 62: return "ft10";
2193                 case 63: return "ft11";
2194                 default: return (NULL);
2195                 }
2196         case EM_X86_64:
2197                 switch (reg) {
2198                 case 0: return "rax";
2199                 case 1: return "rdx";
2200                 case 2: return "rcx";
2201                 case 3: return "rbx";
2202                 case 4: return "rsi";
2203                 case 5: return "rdi";
2204                 case 6: return "rbp";
2205                 case 7: return "rsp";
2206                 case 16: return "rip";
2207                 case 17: return "xmm0";
2208                 case 18: return "xmm1";
2209                 case 19: return "xmm2";
2210                 case 20: return "xmm3";
2211                 case 21: return "xmm4";
2212                 case 22: return "xmm5";
2213                 case 23: return "xmm6";
2214                 case 24: return "xmm7";
2215                 case 25: return "xmm8";
2216                 case 26: return "xmm9";
2217                 case 27: return "xmm10";
2218                 case 28: return "xmm11";
2219                 case 29: return "xmm12";
2220                 case 30: return "xmm13";
2221                 case 31: return "xmm14";
2222                 case 32: return "xmm15";
2223                 case 33: return "st0";
2224                 case 34: return "st1";
2225                 case 35: return "st2";
2226                 case 36: return "st3";
2227                 case 37: return "st4";
2228                 case 38: return "st5";
2229                 case 39: return "st6";
2230                 case 40: return "st7";
2231                 case 41: return "mm0";
2232                 case 42: return "mm1";
2233                 case 43: return "mm2";
2234                 case 44: return "mm3";
2235                 case 45: return "mm4";
2236                 case 46: return "mm5";
2237                 case 47: return "mm6";
2238                 case 48: return "mm7";
2239                 case 49: return "rflags";
2240                 case 50: return "es";
2241                 case 51: return "cs";
2242                 case 52: return "ss";
2243                 case 53: return "ds";
2244                 case 54: return "fs";
2245                 case 55: return "gs";
2246                 case 58: return "fs.base";
2247                 case 59: return "gs.base";
2248                 case 62: return "tr";
2249                 case 63: return "ldtr";
2250                 case 64: return "mxcsr";
2251                 case 65: return "fcw";
2252                 case 66: return "fsw";
2253                 default: return (NULL);
2254                 }
2255         default:
2256                 return (NULL);
2257         }
2258 }
2259
2260 static void
2261 dump_ehdr(struct readelf *re)
2262 {
2263         size_t           phnum, shnum, shstrndx;
2264         int              i;
2265
2266         printf("ELF Header:\n");
2267
2268         /* e_ident[]. */
2269         printf("  Magic:   ");
2270         for (i = 0; i < EI_NIDENT; i++)
2271                 printf("%.2x ", re->ehdr.e_ident[i]);
2272         putchar('\n');
2273
2274         /* EI_CLASS. */
2275         printf("%-37s%s\n", "  Class:", elf_class(re->ehdr.e_ident[EI_CLASS]));
2276
2277         /* EI_DATA. */
2278         printf("%-37s%s\n", "  Data:", elf_endian(re->ehdr.e_ident[EI_DATA]));
2279
2280         /* EI_VERSION. */
2281         printf("%-37s%d %s\n", "  Version:", re->ehdr.e_ident[EI_VERSION],
2282             elf_ver(re->ehdr.e_ident[EI_VERSION]));
2283
2284         /* EI_OSABI. */
2285         printf("%-37s%s\n", "  OS/ABI:", elf_osabi(re->ehdr.e_ident[EI_OSABI]));
2286
2287         /* EI_ABIVERSION. */
2288         printf("%-37s%d\n", "  ABI Version:", re->ehdr.e_ident[EI_ABIVERSION]);
2289
2290         /* e_type. */
2291         printf("%-37s%s\n", "  Type:", elf_type(re->ehdr.e_type));
2292
2293         /* e_machine. */
2294         printf("%-37s%s\n", "  Machine:", elf_machine(re->ehdr.e_machine));
2295
2296         /* e_version. */
2297         printf("%-37s%#x\n", "  Version:", re->ehdr.e_version);
2298
2299         /* e_entry. */
2300         printf("%-37s%#jx\n", "  Entry point address:",
2301             (uintmax_t)re->ehdr.e_entry);
2302
2303         /* e_phoff. */
2304         printf("%-37s%ju (bytes into file)\n", "  Start of program headers:",
2305             (uintmax_t)re->ehdr.e_phoff);
2306
2307         /* e_shoff. */
2308         printf("%-37s%ju (bytes into file)\n", "  Start of section headers:",
2309             (uintmax_t)re->ehdr.e_shoff);
2310
2311         /* e_flags. */
2312         printf("%-37s%#x", "  Flags:", re->ehdr.e_flags);
2313         dump_eflags(re, re->ehdr.e_flags);
2314         putchar('\n');
2315
2316         /* e_ehsize. */
2317         printf("%-37s%u (bytes)\n", "  Size of this header:",
2318             re->ehdr.e_ehsize);
2319
2320         /* e_phentsize. */
2321         printf("%-37s%u (bytes)\n", "  Size of program headers:",
2322             re->ehdr.e_phentsize);
2323
2324         /* e_phnum. */
2325         printf("%-37s%u", "  Number of program headers:", re->ehdr.e_phnum);
2326         if (re->ehdr.e_phnum == PN_XNUM) {
2327                 /* Extended program header numbering is in use. */
2328                 if (elf_getphnum(re->elf, &phnum))
2329                         printf(" (%zu)", phnum);
2330         }
2331         putchar('\n');
2332
2333         /* e_shentsize. */
2334         printf("%-37s%u (bytes)\n", "  Size of section headers:",
2335             re->ehdr.e_shentsize);
2336
2337         /* e_shnum. */
2338         printf("%-37s%u", "  Number of section headers:", re->ehdr.e_shnum);
2339         if (re->ehdr.e_shnum == SHN_UNDEF) {
2340                 /* Extended section numbering is in use. */
2341                 if (elf_getshnum(re->elf, &shnum))
2342                         printf(" (%ju)", (uintmax_t)shnum);
2343         }
2344         putchar('\n');
2345
2346         /* e_shstrndx. */
2347         printf("%-37s%u", "  Section header string table index:",
2348             re->ehdr.e_shstrndx);
2349         if (re->ehdr.e_shstrndx == SHN_XINDEX) {
2350                 /* Extended section numbering is in use. */
2351                 if (elf_getshstrndx(re->elf, &shstrndx))
2352                         printf(" (%ju)", (uintmax_t)shstrndx);
2353         }
2354         putchar('\n');
2355 }
2356
2357 static void
2358 dump_eflags(struct readelf *re, uint64_t e_flags)
2359 {
2360         struct eflags_desc *edesc;
2361         int arm_eabi;
2362
2363         edesc = NULL;
2364         switch (re->ehdr.e_machine) {
2365         case EM_ARM:
2366                 arm_eabi = (e_flags & EF_ARM_EABIMASK) >> 24;
2367                 if (arm_eabi == 0)
2368                         printf(", GNU EABI");
2369                 else if (arm_eabi <= 5)
2370                         printf(", Version%d EABI", arm_eabi);
2371                 edesc = arm_eflags_desc;
2372                 break;
2373         case EM_MIPS:
2374         case EM_MIPS_RS3_LE:
2375                 switch ((e_flags & EF_MIPS_ARCH) >> 28) {
2376                 case 0: printf(", mips1"); break;
2377                 case 1: printf(", mips2"); break;
2378                 case 2: printf(", mips3"); break;
2379                 case 3: printf(", mips4"); break;
2380                 case 4: printf(", mips5"); break;
2381                 case 5: printf(", mips32"); break;
2382                 case 6: printf(", mips64"); break;
2383                 case 7: printf(", mips32r2"); break;
2384                 case 8: printf(", mips64r2"); break;
2385                 default: break;
2386                 }
2387                 switch ((e_flags & 0x00FF0000) >> 16) {
2388                 case 0x81: printf(", 3900"); break;
2389                 case 0x82: printf(", 4010"); break;
2390                 case 0x83: printf(", 4100"); break;
2391                 case 0x85: printf(", 4650"); break;
2392                 case 0x87: printf(", 4120"); break;
2393                 case 0x88: printf(", 4111"); break;
2394                 case 0x8a: printf(", sb1"); break;
2395                 case 0x8b: printf(", octeon"); break;
2396                 case 0x8c: printf(", xlr"); break;
2397                 case 0x91: printf(", 5400"); break;
2398                 case 0x98: printf(", 5500"); break;
2399                 case 0x99: printf(", 9000"); break;
2400                 case 0xa0: printf(", loongson-2e"); break;
2401                 case 0xa1: printf(", loongson-2f"); break;
2402                 default: break;
2403                 }
2404                 switch ((e_flags & 0x0000F000) >> 12) {
2405                 case 1: printf(", o32"); break;
2406                 case 2: printf(", o64"); break;
2407                 case 3: printf(", eabi32"); break;
2408                 case 4: printf(", eabi64"); break;
2409                 default: break;
2410                 }
2411                 edesc = mips_eflags_desc;
2412                 break;
2413         case EM_PPC64:
2414                 switch (e_flags) {
2415                 case 0: printf(", Unspecified or Power ELF V1 ABI"); break;
2416                 case 1: printf(", Power ELF V1 ABI"); break;
2417                 case 2: printf(", OpenPOWER ELF V2 ABI"); break;
2418                 default: break;
2419                 }
2420                 /* FALLTHROUGH */
2421         case EM_PPC:
2422                 edesc = powerpc_eflags_desc;
2423                 break;
2424         case EM_RISCV:
2425                 switch (e_flags & EF_RISCV_FLOAT_ABI_MASK) {
2426                 case EF_RISCV_FLOAT_ABI_SOFT:
2427                         printf(", soft-float ABI");
2428                         break;
2429                 case EF_RISCV_FLOAT_ABI_SINGLE:
2430                         printf(", single-float ABI");
2431                         break;
2432                 case EF_RISCV_FLOAT_ABI_DOUBLE:
2433                         printf(", double-float ABI");
2434                         break;
2435                 case EF_RISCV_FLOAT_ABI_QUAD:
2436                         printf(", quad-float ABI");
2437                         break;
2438                 }
2439                 edesc = riscv_eflags_desc;
2440                 break;
2441         case EM_SPARC:
2442         case EM_SPARC32PLUS:
2443         case EM_SPARCV9:
2444                 switch ((e_flags & EF_SPARCV9_MM)) {
2445                 case EF_SPARCV9_TSO: printf(", tso"); break;
2446                 case EF_SPARCV9_PSO: printf(", pso"); break;
2447                 case EF_SPARCV9_MM: printf(", rmo"); break;
2448                 default: break;
2449                 }
2450                 edesc = sparc_eflags_desc;
2451                 break;
2452         default:
2453                 break;
2454         }
2455
2456         if (edesc != NULL) {
2457                 while (edesc->desc != NULL) {
2458                         if (e_flags & edesc->flag)
2459                                 printf(", %s", edesc->desc);
2460                         edesc++;
2461                 }
2462         }
2463 }
2464
2465 static void
2466 dump_phdr(struct readelf *re)
2467 {
2468         const char      *rawfile;
2469         GElf_Phdr        phdr;
2470         size_t           phnum, size;
2471         int              i, j;
2472
2473 #define PH_HDR  "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz",    \
2474                 "MemSiz", "Flg", "Align"
2475 #define PH_CT   phdr_type(re->ehdr.e_machine, phdr.p_type),             \
2476                 (uintmax_t)phdr.p_offset, (uintmax_t)phdr.p_vaddr,      \
2477                 (uintmax_t)phdr.p_paddr, (uintmax_t)phdr.p_filesz,      \
2478                 (uintmax_t)phdr.p_memsz,                                \
2479                 phdr.p_flags & PF_R ? 'R' : ' ',                        \
2480                 phdr.p_flags & PF_W ? 'W' : ' ',                        \
2481                 phdr.p_flags & PF_X ? 'E' : ' ',                        \
2482                 (uintmax_t)phdr.p_align
2483
2484         if (elf_getphnum(re->elf, &phnum) == 0) {
2485                 warnx("elf_getphnum failed: %s", elf_errmsg(-1));
2486                 return;
2487         }
2488         if (phnum == 0) {
2489                 printf("\nThere are no program headers in this file.\n");
2490                 return;
2491         }
2492
2493         printf("\nElf file type is %s", elf_type(re->ehdr.e_type));
2494         printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry);
2495         printf("There are %ju program headers, starting at offset %ju\n",
2496             (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff);
2497
2498         /* Dump program headers. */
2499         printf("\nProgram Headers:\n");
2500         if (re->ec == ELFCLASS32)
2501                 printf("  %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR);
2502         else if (re->options & RE_WW)
2503                 printf("  %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR);
2504         else
2505                 printf("  %-15s%-19s%-19s%s\n                 %-19s%-20s"
2506                     "%-7s%s\n", PH_HDR);
2507         for (i = 0; (size_t) i < phnum; i++) {
2508                 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) {
2509                         warnx("gelf_getphdr failed: %s", elf_errmsg(-1));
2510                         continue;
2511                 }
2512                 /* TODO: Add arch-specific segment type dump. */
2513                 if (re->ec == ELFCLASS32)
2514                         printf("  %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx "
2515                             "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT);
2516                 else if (re->options & RE_WW)
2517                         printf("  %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx "
2518                             "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT);
2519                 else
2520                         printf("  %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n"
2521                             "                 0x%16.16jx 0x%16.16jx  %c%c%c"
2522                             "    %#jx\n", PH_CT);
2523                 if (phdr.p_type == PT_INTERP) {
2524                         if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) {
2525                                 warnx("elf_rawfile failed: %s", elf_errmsg(-1));
2526                                 continue;
2527                         }
2528                         if (phdr.p_offset >= size) {
2529                                 warnx("invalid program header offset");
2530                                 continue;
2531                         }
2532                         printf("      [Requesting program interpreter: %s]\n",
2533                                 rawfile + phdr.p_offset);
2534                 }
2535         }
2536
2537         /* Dump section to segment mapping. */
2538         if (re->shnum == 0)
2539                 return;
2540         printf("\n Section to Segment mapping:\n");
2541         printf("  Segment Sections...\n");
2542         for (i = 0; (size_t)i < phnum; i++) {
2543                 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) {
2544                         warnx("gelf_getphdr failed: %s", elf_errmsg(-1));
2545                         continue;
2546                 }
2547                 printf("   %2.2d     ", i);
2548                 /* skip NULL section. */
2549                 for (j = 1; (size_t)j < re->shnum; j++) {
2550                         if (re->sl[j].off < phdr.p_offset)
2551                                 continue;
2552                         if (re->sl[j].off + re->sl[j].sz >
2553                             phdr.p_offset + phdr.p_filesz &&
2554                             re->sl[j].type != SHT_NOBITS)
2555                                 continue;
2556                         if (re->sl[j].addr < phdr.p_vaddr ||
2557                             re->sl[j].addr + re->sl[j].sz >
2558                             phdr.p_vaddr + phdr.p_memsz)
2559                                 continue;
2560                         if (phdr.p_type == PT_TLS &&
2561                             (re->sl[j].flags & SHF_TLS) == 0)
2562                                 continue;
2563                         printf("%s ", re->sl[j].name);
2564                 }
2565                 printf("\n");
2566         }
2567 #undef  PH_HDR
2568 #undef  PH_CT
2569 }
2570
2571 static char *
2572 section_flags(struct readelf *re, struct section *s)
2573 {
2574 #define BUF_SZ 256
2575         static char     buf[BUF_SZ];
2576         int             i, p, nb;
2577
2578         p = 0;
2579         nb = re->ec == ELFCLASS32 ? 8 : 16;
2580         if (re->options & RE_T) {
2581                 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb,
2582                     (uintmax_t)s->flags);
2583                 p += nb + 4;
2584         }
2585         for (i = 0; section_flag[i].ln != NULL; i++) {
2586                 if ((s->flags & section_flag[i].value) == 0)
2587                         continue;
2588                 if (re->options & RE_T) {
2589                         snprintf(&buf[p], BUF_SZ - p, "%s, ",
2590                             section_flag[i].ln);
2591                         p += strlen(section_flag[i].ln) + 2;
2592                 } else
2593                         buf[p++] = section_flag[i].sn;
2594         }
2595         if (re->options & RE_T && p > nb + 4)
2596                 p -= 2;
2597         buf[p] = '\0';
2598
2599         return (buf);
2600 }
2601
2602 static void
2603 dump_shdr(struct readelf *re)
2604 {
2605         struct section  *s;
2606         int              i;
2607
2608 #define S_HDR   "[Nr] Name", "Type", "Addr", "Off", "Size", "ES",       \
2609                 "Flg", "Lk", "Inf", "Al"
2610 #define S_HDRL  "[Nr] Name", "Type", "Address", "Offset", "Size",       \
2611                 "EntSize", "Flags", "Link", "Info", "Align"
2612 #define ST_HDR  "[Nr] Name", "Type", "Addr", "Off", "Size", "ES",       \
2613                 "Lk", "Inf", "Al", "Flags"
2614 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link",       \
2615                 "Size", "EntSize", "Info", "Align", "Flags"
2616 #define S_CT    i, s->name, section_type(re->ehdr.e_machine, s->type),  \
2617                 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\
2618                 (uintmax_t)s->entsize, section_flags(re, s),            \
2619                 s->link, s->info, (uintmax_t)s->align
2620 #define ST_CT   i, s->name, section_type(re->ehdr.e_machine, s->type),  \
2621                 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\
2622                 (uintmax_t)s->entsize, s->link, s->info,                \
2623                 (uintmax_t)s->align, section_flags(re, s)
2624 #define ST_CTL  i, s->name, section_type(re->ehdr.e_machine, s->type),  \
2625                 (uintmax_t)s->addr, (uintmax_t)s->off, s->link,         \
2626                 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info,       \
2627                 (uintmax_t)s->align, section_flags(re, s)
2628
2629         if (re->shnum == 0) {
2630                 printf("\nThere are no sections in this file.\n");
2631                 return;
2632         }
2633         printf("There are %ju section headers, starting at offset 0x%jx:\n",
2634             (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff);
2635         printf("\nSection Headers:\n");
2636         if (re->ec == ELFCLASS32) {
2637                 if (re->options & RE_T)
2638                         printf("  %s\n       %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n"
2639                             "%12s\n", ST_HDR);
2640                 else
2641                         printf("  %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n",
2642                             S_HDR);
2643         } else if (re->options & RE_WW) {
2644                 if (re->options & RE_T)
2645                         printf("  %s\n       %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n"
2646                             "%12s\n", ST_HDR);
2647                 else
2648                         printf("  %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n",
2649                             S_HDR);
2650         } else {
2651                 if (re->options & RE_T)
2652                         printf("  %s\n       %-18s%-17s%-18s%s\n       %-18s"
2653                             "%-17s%-18s%s\n%12s\n", ST_HDRL);
2654                 else
2655                         printf("  %-23s%-17s%-18s%s\n       %-18s%-17s%-7s%"
2656                             "-6s%-6s%s\n", S_HDRL);
2657         }
2658         for (i = 0; (size_t)i < re->shnum; i++) {
2659                 s = &re->sl[i];
2660                 if (re->ec == ELFCLASS32) {
2661                         if (re->options & RE_T)
2662                                 printf("  [%2d] %s\n       %-15.15s %8.8jx"
2663                                     " %6.6jx %6.6jx %2.2jx  %2u %3u %2ju\n"
2664                                     "       %s\n", ST_CT);
2665                         else
2666                                 if (re->options & RE_WW)
2667                                         printf("  [%2d] %-17s %-15.15s "
2668                                             "%8.8jx %6.6jx %6.6jx %2.2jx %3s "
2669                                             "%2u %3u %2ju\n", S_CT);
2670                                 else
2671                                         printf("  [%2d] %-17.17s %-15.15s "
2672                                             "%8.8jx %6.6jx %6.6jx %2.2jx %3s "
2673                                             "%2u %3u %2ju\n", S_CT);
2674                 } else if (re->options & RE_WW) {
2675                         if (re->options & RE_T)
2676                                 printf("  [%2d] %s\n       %-15.15s %16.16jx"
2677                                     " %6.6jx %6.6jx %2.2jx  %2u %3u %2ju\n"
2678                                     "       %s\n", ST_CT);
2679                         else
2680                                 printf("  [%2d] %-17s %-15.15s %16.16jx"
2681                                     " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n",
2682                                     S_CT);
2683                 } else {
2684                         if (re->options & RE_T)
2685                                 printf("  [%2d] %s\n       %-15.15s  %16.16jx"
2686                                     "  %16.16jx  %u\n       %16.16jx %16.16jx"
2687                                     "  %-16u  %ju\n       %s\n", ST_CTL);
2688                         else
2689                                 printf("  [%2d] %-17.17s %-15.15s  %16.16jx"
2690                                     "  %8.8jx\n       %16.16jx  %16.16jx "
2691                                     "%3s      %2u   %3u     %ju\n", S_CT);
2692                 }
2693         }
2694         if ((re->options & RE_T) == 0)
2695                 printf("Key to Flags:\n  W (write), A (alloc),"
2696                     " X (execute), M (merge), S (strings)\n"
2697                     "  I (info), L (link order), G (group), x (unknown)\n"
2698                     "  O (extra OS processing required)"
2699                     " o (OS specific), p (processor specific)\n");
2700
2701 #undef  S_HDR
2702 #undef  S_HDRL
2703 #undef  ST_HDR
2704 #undef  ST_HDRL
2705 #undef  S_CT
2706 #undef  ST_CT
2707 #undef  ST_CTL
2708 }
2709
2710 /*
2711  * Return number of entries in the given section. We'd prefer ent_count be a
2712  * size_t *, but libelf APIs already use int for section indices.
2713  */
2714 static int
2715 get_ent_count(struct section *s, int *ent_count)
2716 {
2717         if (s->entsize == 0) {
2718                 warnx("section %s has entry size 0", s->name);
2719                 return (0);
2720         } else if (s->sz / s->entsize > INT_MAX) {
2721                 warnx("section %s has invalid section count", s->name);
2722                 return (0);
2723         }
2724         *ent_count = (int)(s->sz / s->entsize);
2725         return (1);
2726 }
2727
2728 static void
2729 dump_dynamic(struct readelf *re)
2730 {
2731         GElf_Dyn         dyn;
2732         Elf_Data        *d;
2733         struct section  *s;
2734         int              elferr, i, is_dynamic, j, jmax, nentries;
2735
2736         is_dynamic = 0;
2737
2738         for (i = 0; (size_t)i < re->shnum; i++) {
2739                 s = &re->sl[i];
2740                 if (s->type != SHT_DYNAMIC)
2741                         continue;
2742                 (void) elf_errno();
2743                 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
2744                         elferr = elf_errno();
2745                         if (elferr != 0)
2746                                 warnx("elf_getdata failed: %s", elf_errmsg(-1));
2747                         continue;
2748                 }
2749                 if (d->d_size <= 0)
2750                         continue;
2751
2752                 is_dynamic = 1;
2753
2754                 /* Determine the actual number of table entries. */
2755                 nentries = 0;
2756                 if (!get_ent_count(s, &jmax))
2757                         continue;
2758                 for (j = 0; j < jmax; j++) {
2759                         if (gelf_getdyn(d, j, &dyn) != &dyn) {
2760                                 warnx("gelf_getdyn failed: %s",
2761                                     elf_errmsg(-1));
2762                                 continue;
2763                         }
2764                         nentries ++;
2765                         if (dyn.d_tag == DT_NULL)
2766                                 break;
2767                 }
2768
2769                 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off);
2770                 printf(" contains %u entries:\n", nentries);
2771
2772                 if (re->ec == ELFCLASS32)
2773                         printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value");
2774                 else
2775                         printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value");
2776
2777                 for (j = 0; j < nentries; j++) {
2778                         if (gelf_getdyn(d, j, &dyn) != &dyn)
2779                                 continue;
2780                         /* Dump dynamic entry type. */
2781                         if (re->ec == ELFCLASS32)
2782                                 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag);
2783                         else
2784                                 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag);
2785                         printf(" %-20s", dt_type(re->ehdr.e_machine,
2786                             dyn.d_tag));
2787                         /* Dump dynamic entry value. */
2788                         dump_dyn_val(re, &dyn, s->link);
2789                 }
2790         }
2791
2792         if (!is_dynamic)
2793                 printf("\nThere is no dynamic section in this file.\n");
2794 }
2795
2796 static char *
2797 timestamp(time_t ti)
2798 {
2799         static char ts[32];
2800         struct tm *t;
2801
2802         t = gmtime(&ti);
2803         snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d",
2804             t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour,
2805             t->tm_min, t->tm_sec);
2806
2807         return (ts);
2808 }
2809
2810 static const char *
2811 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val)
2812 {
2813         const char *name;
2814
2815         if (stab == SHN_UNDEF)
2816                 name = "ERROR";
2817         else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) {
2818                 (void) elf_errno(); /* clear error */
2819                 name = "ERROR";
2820         }
2821
2822         return (name);
2823 }
2824
2825 static void
2826 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn)
2827 {
2828         switch (re->ehdr.e_machine) {
2829         case EM_MIPS:
2830         case EM_MIPS_RS3_LE:
2831                 switch (dyn->d_tag) {
2832                 case DT_MIPS_RLD_VERSION:
2833                 case DT_MIPS_LOCAL_GOTNO:
2834                 case DT_MIPS_CONFLICTNO:
2835                 case DT_MIPS_LIBLISTNO:
2836                 case DT_MIPS_SYMTABNO:
2837                 case DT_MIPS_UNREFEXTNO:
2838                 case DT_MIPS_GOTSYM:
2839                 case DT_MIPS_HIPAGENO:
2840                 case DT_MIPS_DELTA_CLASS_NO:
2841                 case DT_MIPS_DELTA_INSTANCE_NO:
2842                 case DT_MIPS_DELTA_RELOC_NO:
2843                 case DT_MIPS_DELTA_SYM_NO:
2844                 case DT_MIPS_DELTA_CLASSSYM_NO:
2845                 case DT_MIPS_LOCALPAGE_GOTIDX:
2846                 case DT_MIPS_LOCAL_GOTIDX:
2847                 case DT_MIPS_HIDDEN_GOTIDX:
2848                 case DT_MIPS_PROTECTED_GOTIDX:
2849                         printf(" %ju\n", (uintmax_t) dyn->d_un.d_val);
2850                         break;
2851                 case DT_MIPS_ICHECKSUM:
2852                 case DT_MIPS_FLAGS:
2853                 case DT_MIPS_BASE_ADDRESS:
2854                 case DT_MIPS_CONFLICT:
2855                 case DT_MIPS_LIBLIST:
2856                 case DT_MIPS_RLD_MAP:
2857                 case DT_MIPS_DELTA_CLASS:
2858                 case DT_MIPS_DELTA_INSTANCE:
2859                 case DT_MIPS_DELTA_RELOC:
2860                 case DT_MIPS_DELTA_SYM:
2861                 case DT_MIPS_DELTA_CLASSSYM:
2862                 case DT_MIPS_CXX_FLAGS:
2863                 case DT_MIPS_PIXIE_INIT:
2864                 case DT_MIPS_SYMBOL_LIB:
2865                 case DT_MIPS_OPTIONS:
2866                 case DT_MIPS_INTERFACE:
2867                 case DT_MIPS_DYNSTR_ALIGN:
2868                 case DT_MIPS_INTERFACE_SIZE:
2869                 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR:
2870                 case DT_MIPS_COMPACT_SIZE:
2871                 case DT_MIPS_GP_VALUE:
2872                 case DT_MIPS_AUX_DYNAMIC:
2873                 case DT_MIPS_PLTGOT:
2874                 case DT_MIPS_RLD_OBJ_UPDATE:
2875                 case DT_MIPS_RWPLT:
2876                         printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val);
2877                         break;
2878                 case DT_MIPS_IVERSION:
2879                 case DT_MIPS_PERF_SUFFIX:
2880                 case DT_MIPS_TIME_STAMP:
2881                         printf(" %s\n", timestamp(dyn->d_un.d_val));
2882                         break;
2883                 default:
2884                         printf("\n");
2885                         break;
2886                 }
2887                 break;
2888         default:
2889                 printf("\n");
2890                 break;
2891         }
2892 }
2893
2894 static void
2895 dump_flags(struct flag_desc *desc, uint64_t val)
2896 {
2897         struct flag_desc *fd;
2898
2899         for (fd = desc; fd->flag != 0; fd++) {
2900                 if (val & fd->flag) {
2901                         val &= ~fd->flag;
2902                         printf(" %s", fd->desc);
2903                 }
2904         }
2905         if (val != 0)
2906                 printf(" unknown (0x%jx)", (uintmax_t)val);
2907         printf("\n");
2908 }
2909
2910 static struct flag_desc dt_flags[] = {
2911         { DF_ORIGIN,            "ORIGIN" },
2912         { DF_SYMBOLIC,          "SYMBOLIC" },
2913         { DF_TEXTREL,           "TEXTREL" },
2914         { DF_BIND_NOW,          "BIND_NOW" },
2915         { DF_STATIC_TLS,        "STATIC_TLS" },
2916         { 0, NULL }
2917 };
2918
2919 static struct flag_desc dt_flags_1[] = {
2920         { DF_1_BIND_NOW,        "NOW" },
2921         { DF_1_GLOBAL,          "GLOBAL" },
2922         { 0x4,                  "GROUP" },
2923         { DF_1_NODELETE,        "NODELETE" },
2924         { DF_1_LOADFLTR,        "LOADFLTR" },
2925         { 0x20,                 "INITFIRST" },
2926         { DF_1_NOOPEN,          "NOOPEN" },
2927         { DF_1_ORIGIN,          "ORIGIN" },
2928         { 0x100,                "DIRECT" },
2929         { DF_1_INTERPOSE,       "INTERPOSE" },
2930         { DF_1_NODEFLIB,        "NODEFLIB" },
2931         { 0x1000,               "NODUMP" },
2932         { 0x2000,               "CONFALT" },
2933         { 0x4000,               "ENDFILTEE" },
2934         { 0x8000,               "DISPRELDNE" },
2935         { 0x10000,              "DISPRELPND" },
2936         { 0x20000,              "NODIRECT" },
2937         { 0x40000,              "IGNMULDEF" },
2938         { 0x80000,              "NOKSYMS" },
2939         { 0x100000,             "NOHDR" },
2940         { 0x200000,             "EDITED" },
2941         { 0x400000,             "NORELOC" },
2942         { 0x800000,             "SYMINTPOSE" },
2943         { 0x1000000,            "GLOBAUDIT" },
2944         { 0x02000000,           "SINGLETON" },
2945         { 0x04000000,           "STUB" },
2946         { DF_1_PIE,             "PIE" },
2947         { 0, NULL }
2948 };
2949
2950 static void
2951 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab)
2952 {
2953         const char *name;
2954
2955         if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC &&
2956             dyn->d_tag != DT_AUXILIARY && dyn->d_tag != DT_FILTER) {
2957                 dump_arch_dyn_val(re, dyn);
2958                 return;
2959         }
2960
2961         /* These entry values are index into the string table. */
2962         name = NULL;
2963         if (dyn->d_tag == DT_AUXILIARY || dyn->d_tag == DT_FILTER ||
2964             dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME ||
2965             dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH)
2966                 name = dyn_str(re, stab, dyn->d_un.d_val);
2967
2968         switch(dyn->d_tag) {
2969         case DT_NULL:
2970         case DT_PLTGOT:
2971         case DT_HASH:
2972         case DT_STRTAB:
2973         case DT_SYMTAB:
2974         case DT_RELA:
2975         case DT_INIT:
2976         case DT_SYMBOLIC:
2977         case DT_REL:
2978         case DT_DEBUG:
2979         case DT_TEXTREL:
2980         case DT_JMPREL:
2981         case DT_FINI:
2982         case DT_VERDEF:
2983         case DT_VERNEED:
2984         case DT_VERSYM:
2985         case DT_GNU_HASH:
2986         case DT_GNU_LIBLIST:
2987         case DT_GNU_CONFLICT:
2988                 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val);
2989                 break;
2990         case DT_PLTRELSZ:
2991         case DT_RELASZ:
2992         case DT_RELAENT:
2993         case DT_STRSZ:
2994         case DT_SYMENT:
2995         case DT_RELSZ:
2996         case DT_RELENT:
2997         case DT_PREINIT_ARRAYSZ:
2998         case DT_INIT_ARRAYSZ:
2999         case DT_FINI_ARRAYSZ:
3000         case DT_GNU_CONFLICTSZ:
3001         case DT_GNU_LIBLISTSZ:
3002                 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val);
3003                 break;
3004         case DT_RELACOUNT:
3005         case DT_RELCOUNT:
3006         case DT_VERDEFNUM:
3007         case DT_VERNEEDNUM:
3008                 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val);
3009                 break;
3010         case DT_AUXILIARY:
3011                 printf(" Auxiliary library: [%s]\n", name);
3012                 break;
3013         case DT_FILTER:
3014                 printf(" Filter library: [%s]\n", name);
3015                 break;
3016         case DT_NEEDED:
3017                 printf(" Shared library: [%s]\n", name);
3018                 break;
3019         case DT_SONAME:
3020                 printf(" Library soname: [%s]\n", name);
3021                 break;
3022         case DT_RPATH:
3023                 printf(" Library rpath: [%s]\n", name);
3024                 break;
3025         case DT_RUNPATH:
3026                 printf(" Library runpath: [%s]\n", name);
3027                 break;
3028         case DT_PLTREL:
3029                 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val));
3030                 break;
3031         case DT_GNU_PRELINKED:
3032                 printf(" %s\n", timestamp(dyn->d_un.d_val));
3033                 break;
3034         case DT_FLAGS:
3035                 dump_flags(dt_flags, dyn->d_un.d_val);
3036                 break;
3037         case DT_FLAGS_1:
3038                 dump_flags(dt_flags_1, dyn->d_un.d_val);
3039                 break;
3040         default:
3041                 printf("\n");
3042         }
3043 }
3044
3045 static void
3046 dump_rel(struct readelf *re, struct section *s, Elf_Data *d)
3047 {
3048         GElf_Rel r;
3049         const char *symname;
3050         uint64_t symval;
3051         int i, len;
3052         uint32_t type;
3053         uint8_t type2, type3;
3054
3055         if (s->link >= re->shnum)
3056                 return;
3057
3058 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name"
3059 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info,        \
3060                 elftc_reloc_type_str(re->ehdr.e_machine,            \
3061                 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname
3062 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info,        \
3063                 elftc_reloc_type_str(re->ehdr.e_machine, type),     \
3064                 (uintmax_t)symval, symname
3065
3066         printf("\nRelocation section (%s):\n", s->name);
3067         if (re->ec == ELFCLASS32)
3068                 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR);
3069         else {
3070                 if (re->options & RE_WW)
3071                         printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR);
3072                 else
3073                         printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR);
3074         }
3075         assert(d->d_size == s->sz);
3076         if (!get_ent_count(s, &len))
3077                 return;
3078         for (i = 0; i < len; i++) {
3079                 if (gelf_getrel(d, i, &r) != &r) {
3080                         warnx("gelf_getrel failed: %s", elf_errmsg(-1));
3081                         continue;
3082                 }
3083                 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info));
3084                 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info));
3085                 if (re->ec == ELFCLASS32) {
3086                         r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info),
3087                             ELF64_R_TYPE(r.r_info));
3088                         printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32);
3089                 } else {
3090                         type = ELF64_R_TYPE(r.r_info);
3091                         if (re->ehdr.e_machine == EM_MIPS) {
3092                                 type2 = (type >> 8) & 0xFF;
3093                                 type3 = (type >> 16) & 0xFF;
3094                                 type = type & 0xFF;
3095                         } else {
3096                                 type2 = type3 = 0;
3097                         }
3098                         if (re->options & RE_WW)
3099                                 printf("%16.16jx %16.16jx %-24.24s"
3100                                     " %16.16jx %s\n", REL_CT64);
3101                         else
3102                                 printf("%12.12jx %12.12jx %-19.19s"
3103                                     " %16.16jx %s\n", REL_CT64);
3104                         if (re->ehdr.e_machine == EM_MIPS) {
3105                                 if (re->options & RE_WW) {
3106                                         printf("%32s: %s\n", "Type2",
3107                                             elftc_reloc_type_str(EM_MIPS,
3108                                             type2));
3109                                         printf("%32s: %s\n", "Type3",
3110                                             elftc_reloc_type_str(EM_MIPS,
3111                                             type3));
3112                                 } else {
3113                                         printf("%24s: %s\n", "Type2",
3114                                             elftc_reloc_type_str(EM_MIPS,
3115                                             type2));
3116                                         printf("%24s: %s\n", "Type3",
3117                                             elftc_reloc_type_str(EM_MIPS,
3118                                             type3));
3119                                 }
3120                         }
3121                 }
3122         }
3123
3124 #undef  REL_HDR
3125 #undef  REL_CT
3126 }
3127
3128 static void
3129 dump_rela(struct readelf *re, struct section *s, Elf_Data *d)
3130 {
3131         GElf_Rela r;
3132         const char *symname;
3133         uint64_t symval;
3134         int i, len;
3135         uint32_t type;
3136         uint8_t type2, type3;
3137
3138         if (s->link >= re->shnum)
3139                 return;
3140
3141 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \
3142                 "st_name + r_addend"
3143 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info,       \
3144                 elftc_reloc_type_str(re->ehdr.e_machine,            \
3145                 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname
3146 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info,       \
3147                 elftc_reloc_type_str(re->ehdr.e_machine, type),     \
3148                 (uintmax_t)symval, symname
3149
3150         printf("\nRelocation section with addend (%s):\n", s->name);
3151         if (re->ec == ELFCLASS32)
3152                 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR);
3153         else {
3154                 if (re->options & RE_WW)
3155                         printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR);
3156                 else
3157                         printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR);
3158         }
3159         assert(d->d_size == s->sz);
3160         if (!get_ent_count(s, &len))
3161                 return;
3162         for (i = 0; i < len; i++) {
3163                 if (gelf_getrela(d, i, &r) != &r) {
3164                         warnx("gelf_getrel failed: %s", elf_errmsg(-1));
3165                         continue;
3166                 }
3167                 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info));
3168                 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info));
3169                 if (re->ec == ELFCLASS32) {
3170                         r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info),
3171                             ELF64_R_TYPE(r.r_info));
3172                         printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32);
3173                         printf(" + %x\n", (uint32_t) r.r_addend);
3174                 } else {
3175                         type = ELF64_R_TYPE(r.r_info);
3176                         if (re->ehdr.e_machine == EM_MIPS) {
3177                                 type2 = (type >> 8) & 0xFF;
3178                                 type3 = (type >> 16) & 0xFF;
3179                                 type = type & 0xFF;
3180                         } else {
3181                                 type2 = type3 = 0;
3182                         }
3183                         if (re->options & RE_WW)
3184                                 printf("%16.16jx %16.16jx %-24.24s"
3185                                     " %16.16jx %s", RELA_CT64);
3186                         else
3187                                 printf("%12.12jx %12.12jx %-19.19s"
3188                                     " %16.16jx %s", RELA_CT64);
3189                         printf(" + %jx\n", (uintmax_t) r.r_addend);
3190                         if (re->ehdr.e_machine == EM_MIPS) {
3191                                 if (re->options & RE_WW) {
3192                                         printf("%32s: %s\n", "Type2",
3193                                             elftc_reloc_type_str(EM_MIPS,
3194                                             type2));
3195                                         printf("%32s: %s\n", "Type3",
3196                                             elftc_reloc_type_str(EM_MIPS,
3197                                             type3));
3198                                 } else {
3199                                         printf("%24s: %s\n", "Type2",
3200                                             elftc_reloc_type_str(EM_MIPS,
3201                                             type2));
3202                                         printf("%24s: %s\n", "Type3",
3203                                             elftc_reloc_type_str(EM_MIPS,
3204                                             type3));
3205                                 }
3206                         }
3207                 }
3208         }
3209
3210 #undef  RELA_HDR
3211 #undef  RELA_CT
3212 }
3213
3214 static void
3215 dump_reloc(struct readelf *re)
3216 {
3217         struct section *s;
3218         Elf_Data *d;
3219         int i, elferr;
3220
3221         for (i = 0; (size_t)i < re->shnum; i++) {
3222                 s = &re->sl[i];
3223                 if (s->type == SHT_REL || s->type == SHT_RELA) {
3224                         (void) elf_errno();
3225                         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3226                                 elferr = elf_errno();
3227                                 if (elferr != 0)
3228                                         warnx("elf_getdata failed: %s",
3229                                             elf_errmsg(elferr));
3230                                 continue;
3231                         }
3232                         if (s->type == SHT_REL)
3233                                 dump_rel(re, s, d);
3234                         else
3235                                 dump_rela(re, s, d);
3236                 }
3237         }
3238 }
3239
3240 static void
3241 dump_symtab(struct readelf *re, int i)
3242 {
3243         struct section *s;
3244         Elf_Data *d;
3245         GElf_Sym sym;
3246         const char *name;
3247         uint32_t stab;
3248         int elferr, j, len;
3249         uint16_t vs;
3250
3251         s = &re->sl[i];
3252         if (s->link >= re->shnum)
3253                 return;
3254         stab = s->link;
3255         (void) elf_errno();
3256         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3257                 elferr = elf_errno();
3258                 if (elferr != 0)
3259                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
3260                 return;
3261         }
3262         if (d->d_size <= 0)
3263                 return;
3264         if (!get_ent_count(s, &len))
3265                 return;
3266         printf("\nSymbol table '%s' contains %d entries:\n", s->name, len);
3267         printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type",
3268             "Bind", "Vis", "Ndx", "Name");
3269
3270         for (j = 0; j < len; j++) {
3271                 if (gelf_getsym(d, j, &sym) != &sym) {
3272                         warnx("gelf_getsym failed: %s", elf_errmsg(-1));
3273                         continue;
3274                 }
3275                 printf("%6d:", j);
3276                 printf(" %16.16jx", (uintmax_t) sym.st_value);
3277                 printf(" %5ju", (uintmax_t) sym.st_size);
3278                 printf(" %-7s", st_type(re->ehdr.e_machine,
3279                     re->ehdr.e_ident[EI_OSABI], GELF_ST_TYPE(sym.st_info)));
3280                 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info)));
3281                 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other)));
3282                 printf(" %3s", st_shndx(sym.st_shndx));
3283                 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL)
3284                         printf(" %s", name);
3285                 /* Append symbol version string for SHT_DYNSYM symbol table. */
3286                 if (s->type == SHT_DYNSYM && re->ver != NULL &&
3287                     re->vs != NULL && re->vs[j] > 1) {
3288                         vs = re->vs[j] & VERSYM_VERSION;
3289                         if (vs >= re->ver_sz || re->ver[vs].name == NULL) {
3290                                 warnx("invalid versym version index %u", vs);
3291                                 break;
3292                         }
3293                         if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0)
3294                                 printf("@%s (%d)", re->ver[vs].name, vs);
3295                         else
3296                                 printf("@@%s (%d)", re->ver[vs].name, vs);
3297                 }
3298                 putchar('\n');
3299         }
3300
3301 }
3302
3303 static void
3304 dump_symtabs(struct readelf *re)
3305 {
3306         GElf_Dyn dyn;
3307         Elf_Data *d;
3308         struct section *s;
3309         uint64_t dyn_off;
3310         int elferr, i, len;
3311
3312         /*
3313          * If -D is specified, only dump the symbol table specified by
3314          * the DT_SYMTAB entry in the .dynamic section.
3315          */
3316         dyn_off = 0;
3317         if (re->options & RE_DD) {
3318                 s = NULL;
3319                 for (i = 0; (size_t)i < re->shnum; i++)
3320                         if (re->sl[i].type == SHT_DYNAMIC) {
3321                                 s = &re->sl[i];
3322                                 break;
3323                         }
3324                 if (s == NULL)
3325                         return;
3326                 (void) elf_errno();
3327                 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3328                         elferr = elf_errno();
3329                         if (elferr != 0)
3330                                 warnx("elf_getdata failed: %s", elf_errmsg(-1));
3331                         return;
3332                 }
3333                 if (d->d_size <= 0)
3334                         return;
3335                 if (!get_ent_count(s, &len))
3336                         return;
3337
3338                 for (i = 0; i < len; i++) {
3339                         if (gelf_getdyn(d, i, &dyn) != &dyn) {
3340                                 warnx("gelf_getdyn failed: %s", elf_errmsg(-1));
3341                                 continue;
3342                         }
3343                         if (dyn.d_tag == DT_SYMTAB) {
3344                                 dyn_off = dyn.d_un.d_val;
3345                                 break;
3346                         }
3347                 }
3348         }
3349
3350         /* Find and dump symbol tables. */
3351         for (i = 0; (size_t)i < re->shnum; i++) {
3352                 s = &re->sl[i];
3353                 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) {
3354                         if (re->options & RE_DD) {
3355                                 if (dyn_off == s->addr) {
3356                                         dump_symtab(re, i);
3357                                         break;
3358                                 }
3359                         } else
3360                                 dump_symtab(re, i);
3361                 }
3362         }
3363 }
3364
3365 static void
3366 dump_svr4_hash(struct section *s)
3367 {
3368         Elf_Data        *d;
3369         uint32_t        *buf;
3370         uint32_t         nbucket, nchain;
3371         uint32_t        *bucket, *chain;
3372         uint32_t        *bl, *c, maxl, total;
3373         int              elferr, i, j;
3374
3375         /* Read and parse the content of .hash section. */
3376         (void) elf_errno();
3377         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3378                 elferr = elf_errno();
3379                 if (elferr != 0)
3380                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
3381                 return;
3382         }
3383         if (d->d_size < 2 * sizeof(uint32_t)) {
3384                 warnx(".hash section too small");
3385                 return;
3386         }
3387         buf = d->d_buf;
3388         nbucket = buf[0];
3389         nchain = buf[1];
3390         if (nbucket <= 0 || nchain <= 0) {
3391                 warnx("Malformed .hash section");
3392                 return;
3393         }
3394         if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) {
3395                 warnx("Malformed .hash section");
3396                 return;
3397         }
3398         bucket = &buf[2];
3399         chain = &buf[2 + nbucket];
3400
3401         maxl = 0;
3402         if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
3403                 errx(EXIT_FAILURE, "calloc failed");
3404         for (i = 0; (uint32_t)i < nbucket; i++)
3405                 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j])
3406                         if (++bl[i] > maxl)
3407                                 maxl = bl[i];
3408         if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
3409                 errx(EXIT_FAILURE, "calloc failed");
3410         for (i = 0; (uint32_t)i < nbucket; i++)
3411                 c[bl[i]]++;
3412         printf("\nHistogram for bucket list length (total of %u buckets):\n",
3413             nbucket);
3414         printf(" Length\tNumber\t\t%% of total\tCoverage\n");
3415         total = 0;
3416         for (i = 0; (uint32_t)i <= maxl; i++) {
3417                 total += c[i] * i;
3418                 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i],
3419                     c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1));
3420         }
3421         free(c);
3422         free(bl);
3423 }
3424
3425 static void
3426 dump_svr4_hash64(struct readelf *re, struct section *s)
3427 {
3428         Elf_Data        *d, dst;
3429         uint64_t        *buf;
3430         uint64_t         nbucket, nchain;
3431         uint64_t        *bucket, *chain;
3432         uint64_t        *bl, *c, maxl, total;
3433         int              elferr, i, j;
3434
3435         /*
3436          * ALPHA uses 64-bit hash entries. Since libelf assumes that
3437          * .hash section contains only 32-bit entry, an explicit
3438          * gelf_xlatetom is needed here.
3439          */
3440         (void) elf_errno();
3441         if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
3442                 elferr = elf_errno();
3443                 if (elferr != 0)
3444                         warnx("elf_rawdata failed: %s",
3445                             elf_errmsg(elferr));
3446                 return;
3447         }
3448         d->d_type = ELF_T_XWORD;
3449         memcpy(&dst, d, sizeof(Elf_Data));
3450         if (gelf_xlatetom(re->elf, &dst, d,
3451                 re->ehdr.e_ident[EI_DATA]) != &dst) {
3452                 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1));
3453                 return;
3454         }
3455         if (dst.d_size < 2 * sizeof(uint64_t)) {
3456                 warnx(".hash section too small");
3457                 return;
3458         }
3459         buf = dst.d_buf;
3460         nbucket = buf[0];
3461         nchain = buf[1];
3462         if (nbucket <= 0 || nchain <= 0) {
3463                 warnx("Malformed .hash section");
3464                 return;
3465         }
3466         if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) {
3467                 warnx("Malformed .hash section");
3468                 return;
3469         }
3470         bucket = &buf[2];
3471         chain = &buf[2 + nbucket];
3472
3473         maxl = 0;
3474         if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
3475                 errx(EXIT_FAILURE, "calloc failed");
3476         for (i = 0; (uint32_t)i < nbucket; i++)
3477                 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j])
3478                         if (++bl[i] > maxl)
3479                                 maxl = bl[i];
3480         if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
3481                 errx(EXIT_FAILURE, "calloc failed");
3482         for (i = 0; (uint64_t)i < nbucket; i++)
3483                 c[bl[i]]++;
3484         printf("Histogram for bucket list length (total of %ju buckets):\n",
3485             (uintmax_t)nbucket);
3486         printf(" Length\tNumber\t\t%% of total\tCoverage\n");
3487         total = 0;
3488         for (i = 0; (uint64_t)i <= maxl; i++) {
3489                 total += c[i] * i;
3490                 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i],
3491                     c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1));
3492         }
3493         free(c);
3494         free(bl);
3495 }
3496
3497 static void
3498 dump_gnu_hash(struct readelf *re, struct section *s)
3499 {
3500         struct section  *ds;
3501         Elf_Data        *d;
3502         uint32_t        *buf;
3503         uint32_t        *bucket, *chain;
3504         uint32_t         nbucket, nchain, symndx, maskwords;
3505         uint32_t        *bl, *c, maxl, total;
3506         int              elferr, dynsymcount, i, j;
3507
3508         (void) elf_errno();
3509         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3510                 elferr = elf_errno();
3511                 if (elferr != 0)
3512                         warnx("elf_getdata failed: %s",
3513                             elf_errmsg(elferr));
3514                 return;
3515         }
3516         if (d->d_size < 4 * sizeof(uint32_t)) {
3517                 warnx(".gnu.hash section too small");
3518                 return;
3519         }
3520         buf = d->d_buf;
3521         nbucket = buf[0];
3522         symndx = buf[1];
3523         maskwords = buf[2];
3524         buf += 4;
3525         if (s->link >= re->shnum)
3526                 return;
3527         ds = &re->sl[s->link];
3528         if (!get_ent_count(ds, &dynsymcount))
3529                 return;
3530         if (symndx >= (uint32_t)dynsymcount) {
3531                 warnx("Malformed .gnu.hash section (symndx out of range)");
3532                 return;
3533         }
3534         nchain = dynsymcount - symndx;
3535         if (d->d_size != 4 * sizeof(uint32_t) + maskwords *
3536             (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) +
3537             (nbucket + nchain) * sizeof(uint32_t)) {
3538                 warnx("Malformed .gnu.hash section");
3539                 return;
3540         }
3541         bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2);
3542         chain = bucket + nbucket;
3543
3544         maxl = 0;
3545         if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
3546                 errx(EXIT_FAILURE, "calloc failed");
3547         for (i = 0; (uint32_t)i < nbucket; i++)
3548                 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain;
3549                      j++) {
3550                         if (++bl[i] > maxl)
3551                                 maxl = bl[i];
3552                         if (chain[j - symndx] & 1)
3553                                 break;
3554                 }
3555         if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
3556                 errx(EXIT_FAILURE, "calloc failed");
3557         for (i = 0; (uint32_t)i < nbucket; i++)
3558                 c[bl[i]]++;
3559         printf("Histogram for bucket list length (total of %u buckets):\n",
3560             nbucket);
3561         printf(" Length\tNumber\t\t%% of total\tCoverage\n");
3562         total = 0;
3563         for (i = 0; (uint32_t)i <= maxl; i++) {
3564                 total += c[i] * i;
3565                 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i],
3566                     c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1));
3567         }
3568         free(c);
3569         free(bl);
3570 }
3571
3572 static struct flag_desc gnu_property_aarch64_feature_1_and_bits[] = {
3573         { GNU_PROPERTY_AARCH64_FEATURE_1_BTI,   "BTI" },
3574         { GNU_PROPERTY_AARCH64_FEATURE_1_PAC,   "PAC" },
3575         { 0, NULL }
3576 };
3577
3578 static struct flag_desc_list gnu_property_aarch64[] = {
3579         {
3580             GNU_PROPERTY_AARCH64_FEATURE_1_AND,
3581             "AArch64 features",
3582             gnu_property_aarch64_feature_1_and_bits
3583         },
3584         { 0, NULL, NULL }
3585 };
3586
3587 static struct flag_desc gnu_property_x86_feature_1_and_bits[] = {
3588         { GNU_PROPERTY_X86_FEATURE_1_IBT,       "IBT" },
3589         { GNU_PROPERTY_X86_FEATURE_1_SHSTK,     "SHSTK" },
3590         { 0, NULL }
3591 };
3592
3593 static struct flag_desc_list gnu_property_x86[] = {
3594         {
3595             GNU_PROPERTY_X86_FEATURE_1_AND,
3596             "x64 features",
3597             gnu_property_x86_feature_1_and_bits
3598         },
3599         { 0, NULL, NULL }
3600 };
3601
3602 static struct {
3603         unsigned int emachine;
3604         struct flag_desc_list *flag_list;
3605 } gnu_property_archs[] = {
3606         { EM_AARCH64, gnu_property_aarch64 },
3607         { EM_X86_64, gnu_property_x86 },
3608         { 0, NULL }
3609 };
3610
3611 static void
3612 dump_gnu_property_type_0(struct readelf *re, const char *buf, size_t sz)
3613 {
3614         struct flag_desc_list *desc_list;
3615         struct flag_desc *desc;
3616         size_t i;
3617         uint32_t type, prop_sz;
3618
3619         printf("      Properties: ");
3620         while (sz > 0) {
3621                 if (sz < 8)
3622                         goto bad;
3623
3624                 type = *(const uint32_t *)(const void *)buf;
3625                 prop_sz = *(const uint32_t *)(const void *)(buf + 4);
3626                 buf += 8;
3627                 sz -= 8;
3628
3629                 if (prop_sz > sz)
3630                         goto bad;
3631
3632                 if (type >= GNU_PROPERTY_LOPROC &&
3633                     type <= GNU_PROPERTY_HIPROC) {
3634                         desc_list = NULL;
3635                         for (i = 0; gnu_property_archs[i].flag_list != NULL;
3636                             i++) {
3637                                 if (gnu_property_archs[i].emachine ==
3638                                     re->ehdr.e_machine) {
3639                                         desc_list =
3640                                             gnu_property_archs[i].flag_list;
3641                                         break;
3642                                 }
3643                         }
3644                         if (desc_list == NULL) {
3645                                 printf("machine type %x unknown\n",
3646                                     re->ehdr.e_machine);
3647                                 goto unknown;
3648                         }
3649
3650                         desc = NULL;
3651                         for (i = 0; desc_list[i].desc != NULL; i++) {
3652                                 if (desc_list[i].type == type) {
3653                                         desc = desc_list[i].desc;
3654                                         break;
3655                                 }
3656                         }
3657                         if (desc != NULL) {
3658                                 printf("%s:", desc_list[i].desc_str);
3659                                 if (prop_sz != 4)
3660                                         goto bad;
3661                                 dump_flags(desc,
3662                                     *(const uint32_t *)(const void *)buf);
3663                         }
3664                 }
3665
3666                 buf += roundup2(prop_sz, 8);
3667                 sz -= roundup2(prop_sz, 8);
3668         }
3669         return;
3670 bad:
3671         printf("corrupt GNU property\n");
3672 unknown:
3673         printf("remaining description data:");
3674         for (i = 0; i < sz; i++)
3675                 printf(" %02x", (unsigned char)buf[i]);
3676         printf("\n");
3677 }
3678
3679 static void
3680 dump_hash(struct readelf *re)
3681 {
3682         struct section  *s;
3683         int              i;
3684
3685         for (i = 0; (size_t) i < re->shnum; i++) {
3686                 s = &re->sl[i];
3687                 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) {
3688                         if (s->type == SHT_GNU_HASH)
3689                                 dump_gnu_hash(re, s);
3690                         else if (re->ehdr.e_machine == EM_ALPHA &&
3691                             s->entsize == 8)
3692                                 dump_svr4_hash64(re, s);
3693                         else
3694                                 dump_svr4_hash(s);
3695                 }
3696         }
3697 }
3698
3699 static void
3700 dump_notes(struct readelf *re)
3701 {
3702         struct section *s;
3703         const char *rawfile;
3704         GElf_Phdr phdr;
3705         Elf_Data *d;
3706         size_t filesize, phnum;
3707         int i, elferr;
3708
3709         if (re->ehdr.e_type == ET_CORE) {
3710                 /*
3711                  * Search program headers in the core file for
3712                  * PT_NOTE entry.
3713                  */
3714                 if (elf_getphnum(re->elf, &phnum) == 0) {
3715                         warnx("elf_getphnum failed: %s", elf_errmsg(-1));
3716                         return;
3717                 }
3718                 if (phnum == 0)
3719                         return;
3720                 if ((rawfile = elf_rawfile(re->elf, &filesize)) == NULL) {
3721                         warnx("elf_rawfile failed: %s", elf_errmsg(-1));
3722                         return;
3723                 }
3724                 for (i = 0; (size_t) i < phnum; i++) {
3725                         if (gelf_getphdr(re->elf, i, &phdr) != &phdr) {
3726                                 warnx("gelf_getphdr failed: %s",
3727                                     elf_errmsg(-1));
3728                                 continue;
3729                         }
3730                         if (phdr.p_type == PT_NOTE) {
3731                                 if (phdr.p_offset >= filesize ||
3732                                     phdr.p_filesz > filesize - phdr.p_offset) {
3733                                         warnx("invalid PHDR offset");
3734                                         continue;
3735                                 }
3736                                 dump_notes_content(re, rawfile + phdr.p_offset,
3737                                     phdr.p_filesz, phdr.p_offset);
3738                         }
3739                 }
3740
3741         } else {
3742                 /*
3743                  * For objects other than core files, Search for
3744                  * SHT_NOTE sections.
3745                  */
3746                 for (i = 0; (size_t) i < re->shnum; i++) {
3747                         s = &re->sl[i];
3748                         if (s->type == SHT_NOTE) {
3749                                 (void) elf_errno();
3750                                 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3751                                         elferr = elf_errno();
3752                                         if (elferr != 0)
3753                                                 warnx("elf_getdata failed: %s",
3754                                                     elf_errmsg(elferr));
3755                                         continue;
3756                                 }
3757                                 dump_notes_content(re, d->d_buf, d->d_size,
3758                                     s->off);
3759                         }
3760                 }
3761         }
3762 }
3763
3764 static struct flag_desc note_feature_ctl_flags[] = {
3765         { NT_FREEBSD_FCTL_ASLR_DISABLE,         "ASLR_DISABLE" },
3766         { NT_FREEBSD_FCTL_PROTMAX_DISABLE,      "PROTMAX_DISABLE" },
3767         { NT_FREEBSD_FCTL_STKGAP_DISABLE,       "STKGAP_DISABLE" },
3768         { NT_FREEBSD_FCTL_WXNEEDED,             "WXNEEDED" },
3769         { NT_FREEBSD_FCTL_LA48,                 "LA48" },
3770         { 0, NULL }
3771 };
3772
3773 static bool
3774 dump_note_string(const char *description, const char *s, size_t len)
3775 {
3776         size_t i;
3777
3778         if (len == 0 || s[--len] != '\0') {
3779                 return (false);
3780         } else {
3781                 for (i = 0; i < len; i++)
3782                         if (!isprint(s[i]))
3783                                 return (false);
3784         }
3785
3786         printf("   %s: %s\n", description, s);
3787         return (true);
3788 }
3789
3790 struct note_desc {
3791         uint32_t type;
3792         const char *description;
3793         bool (*fp)(const char *, const char *, size_t);
3794 };
3795
3796 static struct note_desc xen_notes[] = {
3797         { 5, "Xen version", dump_note_string },
3798         { 6, "Guest OS", dump_note_string },
3799         { 7, "Guest version", dump_note_string },
3800         { 8, "Loader", dump_note_string },
3801         { 9, "PAE mode", dump_note_string },
3802         { 10, "Features", dump_note_string },
3803         { 11, "BSD symtab", dump_note_string },
3804         { 0, NULL, NULL }
3805 };
3806
3807 static void
3808 dump_notes_data(struct readelf *re, const char *name, uint32_t type,
3809     const char *buf, size_t sz)
3810 {
3811         struct note_desc *nd;
3812         size_t i;
3813         const uint32_t *ubuf;
3814
3815         /* Note data is at least 4-byte aligned. */
3816         if (((uintptr_t)buf & 3) != 0) {
3817                 warnx("bad note data alignment");
3818                 goto unknown;
3819         }
3820         ubuf = (const uint32_t *)(const void *)buf;
3821
3822         if (strcmp(name, "FreeBSD") == 0) {
3823                 switch (type) {
3824                 case NT_FREEBSD_ABI_TAG:
3825                         if (sz != 4)
3826                                 goto unknown;
3827                         printf("   ABI tag: %u\n", ubuf[0]);
3828                         return;
3829                 /* NT_FREEBSD_NOINIT_TAG carries no data, treat as unknown. */
3830                 case NT_FREEBSD_ARCH_TAG:
3831                         printf("   Arch tag: %s\n", buf);
3832                         return;
3833                 case NT_FREEBSD_FEATURE_CTL:
3834                         if (sz != 4)
3835                                 goto unknown;
3836                         printf("   Features:");
3837                         dump_flags(note_feature_ctl_flags, ubuf[0]);
3838                         return;
3839                 }
3840         } else if (strcmp(name, "Go") == 0) {
3841                 if (type == 4) {
3842                         printf("   Build ID: ");
3843                         for (i = 0; i < sz; i++) {
3844                                 printf(isprint(buf[i]) ? "%c" : "<%02x>",
3845                                     buf[i]);
3846                         }
3847                         printf("\n");
3848                         return;
3849                 }
3850         } else if (strcmp(name, "GNU") == 0) {
3851                 switch (type) {
3852                 case NT_GNU_PROPERTY_TYPE_0:
3853                         dump_gnu_property_type_0(re, buf, sz);
3854                         return;
3855                 case NT_GNU_BUILD_ID:
3856                         printf("   Build ID: ");
3857                         for (i = 0; i < sz; i++)
3858                                 printf("%02x", (unsigned char)buf[i]);
3859                         printf("\n");
3860                         return;
3861                 }
3862         } else if (strcmp(name, "Xen") == 0) {
3863                 for (nd = xen_notes; nd->description != NULL; nd++) {
3864                         if (nd->type == type) {
3865                                 if (nd->fp(nd->description, buf, sz))
3866                                         return;
3867                                 else
3868                                         break;
3869                         }
3870                 }
3871         }
3872 unknown:
3873         printf("   description data:");
3874         for (i = 0; i < sz; i++)
3875                 printf(" %02x", (unsigned char)buf[i]);
3876         printf("\n");
3877 }
3878
3879 static void
3880 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off)
3881 {
3882         Elf_Note *note;
3883         const char *end, *name;
3884         uint32_t namesz, descsz;
3885
3886         printf("\nNotes at offset %#010jx with length %#010jx:\n",
3887             (uintmax_t) off, (uintmax_t) sz);
3888         printf("  %-13s %-15s %s\n", "Owner", "Data size", "Description");
3889         end = buf + sz;
3890         while (buf < end) {
3891                 if (buf + sizeof(*note) > end) {
3892                         warnx("invalid note header");
3893                         return;
3894                 }
3895                 note = (Elf_Note *)(uintptr_t) buf;
3896                 namesz = roundup2(note->n_namesz, 4);
3897                 descsz = roundup2(note->n_descsz, 4);
3898                 if (namesz < note->n_namesz || descsz < note->n_descsz ||
3899                     buf + namesz + descsz > end) {
3900                         warnx("invalid note header");
3901                         return;
3902                 }
3903                 buf += sizeof(Elf_Note);
3904                 name = buf;
3905                 buf += namesz;
3906                 /*
3907                  * The name field is required to be nul-terminated, and
3908                  * n_namesz includes the terminating nul in observed
3909                  * implementations (contrary to the ELF-64 spec). A special
3910                  * case is needed for cores generated by some older Linux
3911                  * versions, which write a note named "CORE" without a nul
3912                  * terminator and n_namesz = 4.
3913                  */
3914                 if (note->n_namesz == 0)
3915                         name = "";
3916                 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0)
3917                         name = "CORE";
3918                 else if (strnlen(name, note->n_namesz) >= note->n_namesz)
3919                         name = "<invalid>";
3920                 printf("  %-13s %#010jx", name, (uintmax_t) note->n_descsz);
3921                 printf("      %s\n", note_type(name, re->ehdr.e_type,
3922                     note->n_type));
3923                 dump_notes_data(re, name, note->n_type, buf, note->n_descsz);
3924                 buf += descsz;
3925         }
3926 }
3927
3928 /*
3929  * Symbol versioning sections are the same for 32bit and 64bit
3930  * ELF objects.
3931  */
3932 #define Elf_Verdef      Elf32_Verdef
3933 #define Elf_Verdaux     Elf32_Verdaux
3934 #define Elf_Verneed     Elf32_Verneed
3935 #define Elf_Vernaux     Elf32_Vernaux
3936
3937 #define SAVE_VERSION_NAME(x, n, t)                                      \
3938         do {                                                            \
3939                 while (x >= re->ver_sz) {                               \
3940                         nv = realloc(re->ver,                           \
3941                             sizeof(*re->ver) * re->ver_sz * 2);         \
3942                         if (nv == NULL) {                               \
3943                                 warn("realloc failed");                 \
3944                                 free(re->ver);                          \
3945                                 return;                                 \
3946                         }                                               \
3947                         re->ver = nv;                                   \
3948                         for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \
3949                                 re->ver[i].name = NULL;                 \
3950                                 re->ver[i].type = 0;                    \
3951                         }                                               \
3952                         re->ver_sz *= 2;                                \
3953                 }                                                       \
3954                 if (x > 1) {                                            \
3955                         re->ver[x].name = n;                            \
3956                         re->ver[x].type = t;                            \
3957                 }                                                       \
3958         } while (0)
3959
3960
3961 static void
3962 dump_verdef(struct readelf *re, int dump)
3963 {
3964         struct section *s;
3965         struct symver *nv;
3966         Elf_Data *d;
3967         Elf_Verdef *vd;
3968         Elf_Verdaux *vda;
3969         uint8_t *buf, *end, *buf2;
3970         const char *name;
3971         int elferr, i, j;
3972
3973         if ((s = re->vd_s) == NULL)
3974                 return;
3975         if (s->link >= re->shnum)
3976                 return;
3977
3978         if (re->ver == NULL) {
3979                 re->ver_sz = 16;
3980                 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) ==
3981                     NULL) {
3982                         warn("calloc failed");
3983                         return;
3984                 }
3985                 re->ver[0].name = "*local*";
3986                 re->ver[1].name = "*global*";
3987         }
3988
3989         if (dump)
3990                 printf("\nVersion definition section (%s):\n", s->name);
3991         (void) elf_errno();
3992         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3993                 elferr = elf_errno();
3994                 if (elferr != 0)
3995                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
3996                 return;
3997         }
3998         if (d->d_size == 0)
3999                 return;
4000
4001         buf = d->d_buf;
4002         end = buf + d->d_size;
4003         while (buf + sizeof(Elf_Verdef) <= end) {
4004                 vd = (Elf_Verdef *) (uintptr_t) buf;
4005                 if (dump) {
4006                         printf("  0x%4.4lx", (unsigned long)
4007                             (buf - (uint8_t *)d->d_buf));
4008                         printf(" vd_version: %u vd_flags: %d"
4009                             " vd_ndx: %u vd_cnt: %u", vd->vd_version,
4010                             vd->vd_flags, vd->vd_ndx, vd->vd_cnt);
4011                 }
4012                 buf2 = buf + vd->vd_aux;
4013                 j = 0;
4014                 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) {
4015                         vda = (Elf_Verdaux *) (uintptr_t) buf2;
4016                         name = get_string(re, s->link, vda->vda_name);
4017                         if (j == 0) {
4018                                 if (dump)
4019                                         printf(" vda_name: %s\n", name);
4020                                 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1);
4021                         } else if (dump)
4022                                 printf("  0x%4.4lx parent: %s\n",
4023                                     (unsigned long) (buf2 -
4024                                     (uint8_t *)d->d_buf), name);
4025                         if (vda->vda_next == 0)
4026                                 break;
4027                         buf2 += vda->vda_next;
4028                         j++;
4029                 }
4030                 if (vd->vd_next == 0)
4031                         break;
4032                 buf += vd->vd_next;
4033         }
4034 }
4035
4036 static void
4037 dump_verneed(struct readelf *re, int dump)
4038 {
4039         struct section *s;
4040         struct symver *nv;
4041         Elf_Data *d;
4042         Elf_Verneed *vn;
4043         Elf_Vernaux *vna;
4044         uint8_t *buf, *end, *buf2;
4045         const char *name;
4046         int elferr, i, j;
4047
4048         if ((s = re->vn_s) == NULL)
4049                 return;
4050         if (s->link >= re->shnum)
4051                 return;
4052
4053         if (re->ver == NULL) {
4054                 re->ver_sz = 16;
4055                 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) ==
4056                     NULL) {
4057                         warn("calloc failed");
4058                         return;
4059                 }
4060                 re->ver[0].name = "*local*";
4061                 re->ver[1].name = "*global*";
4062         }
4063
4064         if (dump)
4065                 printf("\nVersion needed section (%s):\n", s->name);
4066         (void) elf_errno();
4067         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4068                 elferr = elf_errno();
4069                 if (elferr != 0)
4070                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
4071                 return;
4072         }
4073         if (d->d_size == 0)
4074                 return;
4075
4076         buf = d->d_buf;
4077         end = buf + d->d_size;
4078         while (buf + sizeof(Elf_Verneed) <= end) {
4079                 vn = (Elf_Verneed *) (uintptr_t) buf;
4080                 if (dump) {
4081                         printf("  0x%4.4lx", (unsigned long)
4082                             (buf - (uint8_t *)d->d_buf));
4083                         printf(" vn_version: %u vn_file: %s vn_cnt: %u\n",
4084                             vn->vn_version,
4085                             get_string(re, s->link, vn->vn_file),
4086                             vn->vn_cnt);
4087                 }
4088                 buf2 = buf + vn->vn_aux;
4089                 j = 0;
4090                 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) {
4091                         vna = (Elf32_Vernaux *) (uintptr_t) buf2;
4092                         if (dump)
4093                                 printf("  0x%4.4lx", (unsigned long)
4094                                     (buf2 - (uint8_t *)d->d_buf));
4095                         name = get_string(re, s->link, vna->vna_name);
4096                         if (dump)
4097                                 printf("   vna_name: %s vna_flags: %u"
4098                                     " vna_other: %u\n", name,
4099                                     vna->vna_flags, vna->vna_other);
4100                         SAVE_VERSION_NAME((int)vna->vna_other, name, 0);
4101                         if (vna->vna_next == 0)
4102                                 break;
4103                         buf2 += vna->vna_next;
4104                         j++;
4105                 }
4106                 if (vn->vn_next == 0)
4107                         break;
4108                 buf += vn->vn_next;
4109         }
4110 }
4111
4112 static void
4113 dump_versym(struct readelf *re)
4114 {
4115         int i;
4116         uint16_t vs;
4117
4118         if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL)
4119                 return;
4120         printf("\nVersion symbol section (%s):\n", re->vs_s->name);
4121         for (i = 0; i < re->vs_sz; i++) {
4122                 if ((i & 3) == 0) {
4123                         if (i > 0)
4124                                 putchar('\n');
4125                         printf("  %03x:", i);
4126                 }
4127                 vs = re->vs[i] & VERSYM_VERSION;
4128                 if (vs >= re->ver_sz || re->ver[vs].name == NULL) {
4129                         warnx("invalid versym version index %u", re->vs[i]);
4130                         break;
4131                 }
4132                 if (re->vs[i] & VERSYM_HIDDEN)
4133                         printf(" %3xh %-12s ", vs,
4134                             re->ver[re->vs[i] & VERSYM_VERSION].name);
4135                 else
4136                         printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name);
4137         }
4138         putchar('\n');
4139 }
4140
4141 static void
4142 dump_ver(struct readelf *re)
4143 {
4144
4145         if (re->vs_s && re->ver && re->vs)
4146                 dump_versym(re);
4147         if (re->vd_s)
4148                 dump_verdef(re, 1);
4149         if (re->vn_s)
4150                 dump_verneed(re, 1);
4151 }
4152
4153 static void
4154 search_ver(struct readelf *re)
4155 {
4156         struct section *s;
4157         Elf_Data *d;
4158         int elferr, i;
4159
4160         for (i = 0; (size_t) i < re->shnum; i++) {
4161                 s = &re->sl[i];
4162                 if (s->type == SHT_SUNW_versym)
4163                         re->vs_s = s;
4164                 if (s->type == SHT_SUNW_verneed)
4165                         re->vn_s = s;
4166                 if (s->type == SHT_SUNW_verdef)
4167                         re->vd_s = s;
4168         }
4169         if (re->vd_s)
4170                 dump_verdef(re, 0);
4171         if (re->vn_s)
4172                 dump_verneed(re, 0);
4173         if (re->vs_s && re->ver != NULL) {
4174                 (void) elf_errno();
4175                 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) {
4176                         elferr = elf_errno();
4177                         if (elferr != 0)
4178                                 warnx("elf_getdata failed: %s",
4179                                     elf_errmsg(elferr));
4180                         return;
4181                 }
4182                 if (d->d_size == 0)
4183                         return;
4184                 re->vs = d->d_buf;
4185                 re->vs_sz = d->d_size / sizeof(Elf32_Half);
4186         }
4187 }
4188
4189 #undef  Elf_Verdef
4190 #undef  Elf_Verdaux
4191 #undef  Elf_Verneed
4192 #undef  Elf_Vernaux
4193 #undef  SAVE_VERSION_NAME
4194
4195 /*
4196  * Elf32_Lib and Elf64_Lib are identical.
4197  */
4198 #define Elf_Lib         Elf32_Lib
4199
4200 static void
4201 dump_liblist(struct readelf *re)
4202 {
4203         struct section *s;
4204         struct tm *t;
4205         time_t ti;
4206         char tbuf[20];
4207         Elf_Data *d;
4208         Elf_Lib *lib;
4209         int i, j, k, elferr, first, len;
4210
4211         for (i = 0; (size_t) i < re->shnum; i++) {
4212                 s = &re->sl[i];
4213                 if (s->type != SHT_GNU_LIBLIST)
4214                         continue;
4215                 if (s->link >= re->shnum)
4216                         continue;
4217                 (void) elf_errno();
4218                 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4219                         elferr = elf_errno();
4220                         if (elferr != 0)
4221                                 warnx("elf_getdata failed: %s",
4222                                     elf_errmsg(elferr));
4223                         continue;
4224                 }
4225                 if (d->d_size <= 0)
4226                         continue;
4227                 lib = d->d_buf;
4228                 if (!get_ent_count(s, &len))
4229                         continue;
4230                 printf("\nLibrary list section '%s' ", s->name);
4231                 printf("contains %d entries:\n", len);
4232                 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp",
4233                     "Checksum", "Version", "Flags");
4234                 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) {
4235                         printf("%3d: ", j);
4236                         printf("%-20.20s ",
4237                             get_string(re, s->link, lib->l_name));
4238                         ti = lib->l_time_stamp;
4239                         t = gmtime(&ti);
4240                         snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d"
4241                             ":%2d", t->tm_year + 1900, t->tm_mon + 1,
4242                             t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
4243                         printf("%-19.19s ", tbuf);
4244                         printf("0x%08x ", lib->l_checksum);
4245                         printf("%-7d %#x", lib->l_version, lib->l_flags);
4246                         if (lib->l_flags != 0) {
4247                                 first = 1;
4248                                 putchar('(');
4249                                 for (k = 0; l_flag[k].name != NULL; k++) {
4250                                         if ((l_flag[k].value & lib->l_flags) ==
4251                                             0)
4252                                                 continue;
4253                                         if (!first)
4254                                                 putchar(',');
4255                                         else
4256                                                 first = 0;
4257                                         printf("%s", l_flag[k].name);
4258                                 }
4259                                 putchar(')');
4260                         }
4261                         putchar('\n');
4262                         lib++;
4263                 }
4264         }
4265 }
4266
4267 #undef Elf_Lib
4268
4269 static void
4270 dump_section_groups(struct readelf *re)
4271 {
4272         struct section *s;
4273         const char *symname;
4274         Elf_Data *d;
4275         uint32_t *w;
4276         int i, j, elferr;
4277         size_t n;
4278
4279         for (i = 0; (size_t) i < re->shnum; i++) {
4280                 s = &re->sl[i];
4281                 if (s->type != SHT_GROUP)
4282                         continue;
4283                 if (s->link >= re->shnum)
4284                         continue;
4285                 (void) elf_errno();
4286                 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4287                         elferr = elf_errno();
4288                         if (elferr != 0)
4289                                 warnx("elf_getdata failed: %s",
4290                                     elf_errmsg(elferr));
4291                         continue;
4292                 }
4293                 if (d->d_size <= 0)
4294                         continue;
4295
4296                 w = d->d_buf;
4297
4298                 /* We only support COMDAT section. */
4299 #ifndef GRP_COMDAT
4300 #define GRP_COMDAT 0x1
4301 #endif
4302                 if ((*w++ & GRP_COMDAT) == 0)
4303                         return;
4304
4305                 if (s->entsize == 0)
4306                         s->entsize = 4;
4307
4308                 symname = get_symbol_name(re, s->link, s->info);
4309                 n = s->sz / s->entsize;
4310                 if (n-- < 1)
4311                         return;
4312
4313                 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju"
4314                     " sections:\n", i, s->name, symname, (uintmax_t)n);
4315                 printf("   %-10.10s %s\n", "[Index]", "Name");
4316                 for (j = 0; (size_t) j < n; j++, w++) {
4317                         if (*w >= re->shnum) {
4318                                 warnx("invalid section index: %u", *w);
4319                                 continue;
4320                         }
4321                         printf("   [%5u]   %s\n", *w, re->sl[*w].name);
4322                 }
4323         }
4324 }
4325
4326 static uint8_t *
4327 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe)
4328 {
4329         uint64_t val;
4330
4331         /*
4332          * According to ARM EABI: For tags > 32, even numbered tags have
4333          * a ULEB128 param and odd numbered ones have NUL-terminated
4334          * string param. This rule probably also applies for tags <= 32
4335          * if the object arch is not ARM.
4336          */
4337
4338         printf("  Tag_unknown_%ju: ", (uintmax_t) tag);
4339
4340         if (tag & 1) {
4341                 printf("%s\n", (char *) p);
4342                 p += strlen((char *) p) + 1;
4343         } else {
4344                 val = _decode_uleb128(&p, pe);
4345                 printf("%ju\n", (uintmax_t) val);
4346         }
4347
4348         return (p);
4349 }
4350
4351 static uint8_t *
4352 dump_compatibility_tag(uint8_t *p, uint8_t *pe)
4353 {
4354         uint64_t val;
4355
4356         val = _decode_uleb128(&p, pe);
4357         printf("flag = %ju, vendor = %s\n", (uintmax_t) val, p);
4358         p += strlen((char *) p) + 1;
4359
4360         return (p);
4361 }
4362
4363 static void
4364 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe)
4365 {
4366         uint64_t tag, val;
4367         size_t i;
4368         int found, desc;
4369
4370         (void) re;
4371
4372         while (p < pe) {
4373                 tag = _decode_uleb128(&p, pe);
4374                 found = desc = 0;
4375                 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]);
4376                      i++) {
4377                         if (tag == aeabi_tags[i].tag) {
4378                                 found = 1;
4379                                 printf("  %s: ", aeabi_tags[i].s_tag);
4380                                 if (aeabi_tags[i].get_desc) {
4381                                         desc = 1;
4382                                         val = _decode_uleb128(&p, pe);
4383                                         printf("%s\n",
4384                                             aeabi_tags[i].get_desc(val));
4385                                 }
4386                                 break;
4387                         }
4388                         if (tag < aeabi_tags[i].tag)
4389                                 break;
4390                 }
4391                 if (!found) {
4392                         p = dump_unknown_tag(tag, p, pe);
4393                         continue;
4394                 }
4395                 if (desc)
4396                         continue;
4397
4398                 switch (tag) {
4399                 case 4:         /* Tag_CPU_raw_name */
4400                 case 5:         /* Tag_CPU_name */
4401                 case 67:        /* Tag_conformance */
4402                         printf("%s\n", (char *) p);
4403                         p += strlen((char *) p) + 1;
4404                         break;
4405                 case 32:        /* Tag_compatibility */
4406                         p = dump_compatibility_tag(p, pe);
4407                         break;
4408                 case 64:        /* Tag_nodefaults */
4409                         /* ignored, written as 0. */
4410                         (void) _decode_uleb128(&p, pe);
4411                         printf("True\n");
4412                         break;
4413                 case 65:        /* Tag_also_compatible_with */
4414                         val = _decode_uleb128(&p, pe);
4415                         /* Must be Tag_CPU_arch */
4416                         if (val != 6) {
4417                                 printf("unknown\n");
4418                                 break;
4419                         }
4420                         val = _decode_uleb128(&p, pe);
4421                         printf("%s\n", aeabi_cpu_arch(val));
4422                         /* Skip NUL terminator. */
4423                         p++;
4424                         break;
4425                 default:
4426                         putchar('\n');
4427                         break;
4428                 }
4429         }
4430 }
4431
4432 #ifndef Tag_GNU_MIPS_ABI_FP
4433 #define Tag_GNU_MIPS_ABI_FP     4
4434 #endif
4435
4436 static void
4437 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe)
4438 {
4439         uint64_t tag, val;
4440
4441         (void) re;
4442
4443         while (p < pe) {
4444                 tag = _decode_uleb128(&p, pe);
4445                 switch (tag) {
4446                 case Tag_GNU_MIPS_ABI_FP:
4447                         val = _decode_uleb128(&p, pe);
4448                         printf("  Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val));
4449                         break;
4450                 case 32:        /* Tag_compatibility */
4451                         p = dump_compatibility_tag(p, pe);
4452                         break;
4453                 default:
4454                         p = dump_unknown_tag(tag, p, pe);
4455                         break;
4456                 }
4457         }
4458 }
4459
4460 #ifndef Tag_GNU_Power_ABI_FP
4461 #define Tag_GNU_Power_ABI_FP    4
4462 #endif
4463
4464 #ifndef Tag_GNU_Power_ABI_Vector
4465 #define Tag_GNU_Power_ABI_Vector        8
4466 #endif
4467
4468 static void
4469 dump_ppc_attributes(uint8_t *p, uint8_t *pe)
4470 {
4471         uint64_t tag, val;
4472
4473         while (p < pe) {
4474                 tag = _decode_uleb128(&p, pe);
4475                 switch (tag) {
4476                 case Tag_GNU_Power_ABI_FP:
4477                         val = _decode_uleb128(&p, pe);
4478                         printf("  Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val));
4479                         break;
4480                 case Tag_GNU_Power_ABI_Vector:
4481                         val = _decode_uleb128(&p, pe);
4482                         printf("  Tag_GNU_Power_ABI_Vector: %s\n",
4483                             ppc_abi_vector(val));
4484                         break;
4485                 case 32:        /* Tag_compatibility */
4486                         p = dump_compatibility_tag(p, pe);
4487                         break;
4488                 default:
4489                         p = dump_unknown_tag(tag, p, pe);
4490                         break;
4491                 }
4492         }
4493 }
4494
4495 static void
4496 dump_attributes(struct readelf *re)
4497 {
4498         struct section *s;
4499         Elf_Data *d;
4500         uint8_t *p, *pe, *sp;
4501         size_t len, seclen, nlen, sublen;
4502         uint64_t val;
4503         int tag, i, elferr;
4504
4505         for (i = 0; (size_t) i < re->shnum; i++) {
4506                 s = &re->sl[i];
4507                 if (s->type != SHT_GNU_ATTRIBUTES &&
4508                     (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3))
4509                         continue;
4510                 (void) elf_errno();
4511                 if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
4512                         elferr = elf_errno();
4513                         if (elferr != 0)
4514                                 warnx("elf_rawdata failed: %s",
4515                                     elf_errmsg(elferr));
4516                         continue;
4517                 }
4518                 if (d->d_size <= 0)
4519                         continue;
4520                 p = d->d_buf;
4521                 pe = p + d->d_size;
4522                 if (*p != 'A') {
4523                         printf("Unknown Attribute Section Format: %c\n",
4524                             (char) *p);
4525                         continue;
4526                 }
4527                 len = d->d_size - 1;
4528                 p++;
4529                 while (len > 0) {
4530                         if (len < 4) {
4531                                 warnx("truncated attribute section length");
4532                                 return;
4533                         }
4534                         seclen = re->dw_decode(&p, 4);
4535                         if (seclen > len) {
4536                                 warnx("invalid attribute section length");
4537                                 return;
4538                         }
4539                         len -= seclen;
4540                         nlen = strlen((char *) p) + 1;
4541                         if (nlen + 4 > seclen) {
4542                                 warnx("invalid attribute section name");
4543                                 return;
4544                         }
4545                         printf("Attribute Section: %s\n", (char *) p);
4546                         p += nlen;
4547                         seclen -= nlen + 4;
4548                         while (seclen > 0) {
4549                                 sp = p;
4550                                 tag = *p++;
4551                                 sublen = re->dw_decode(&p, 4);
4552                                 if (sublen > seclen) {
4553                                         warnx("invalid attribute sub-section"
4554                                             " length");
4555                                         return;
4556                                 }
4557                                 seclen -= sublen;
4558                                 printf("%s", top_tag(tag));
4559                                 if (tag == 2 || tag == 3) {
4560                                         putchar(':');
4561                                         for (;;) {
4562                                                 val = _decode_uleb128(&p, pe);
4563                                                 if (val == 0)
4564                                                         break;
4565                                                 printf(" %ju", (uintmax_t) val);
4566                                         }
4567                                 }
4568                                 putchar('\n');
4569                                 if (re->ehdr.e_machine == EM_ARM &&
4570                                     s->type == SHT_LOPROC + 3)
4571                                         dump_arm_attributes(re, p, sp + sublen);
4572                                 else if (re->ehdr.e_machine == EM_MIPS ||
4573                                     re->ehdr.e_machine == EM_MIPS_RS3_LE)
4574                                         dump_mips_attributes(re, p,
4575                                             sp + sublen);
4576                                 else if (re->ehdr.e_machine == EM_PPC)
4577                                         dump_ppc_attributes(p, sp + sublen);
4578                                 p = sp + sublen;
4579                         }
4580                 }
4581         }
4582 }
4583
4584 static void
4585 dump_mips_specific_info(struct readelf *re)
4586 {
4587         struct section *s;
4588         int i;
4589
4590         s = NULL;
4591         for (i = 0; (size_t) i < re->shnum; i++) {
4592                 s = &re->sl[i];
4593                 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") ||
4594                     (s->type == SHT_MIPS_OPTIONS))) {
4595                         dump_mips_options(re, s);
4596                 }
4597         }
4598
4599         if (s->name != NULL && (!strcmp(s->name, ".MIPS.abiflags") ||
4600             (s->type == SHT_MIPS_ABIFLAGS)))
4601                 dump_mips_abiflags(re, s);
4602
4603         /*
4604          * Dump .reginfo if present (although it will be ignored by an OS if a
4605          * .MIPS.options section is present, according to SGI mips64 spec).
4606          */
4607         for (i = 0; (size_t) i < re->shnum; i++) {
4608                 s = &re->sl[i];
4609                 if (s->name != NULL && (!strcmp(s->name, ".reginfo") ||
4610                     (s->type == SHT_MIPS_REGINFO)))
4611                         dump_mips_reginfo(re, s);
4612         }
4613 }
4614
4615 static void
4616 dump_mips_abiflags(struct readelf *re, struct section *s)
4617 {
4618         Elf_Data *d;
4619         uint8_t *p;
4620         int elferr;
4621         uint32_t isa_ext, ases, flags1, flags2;
4622         uint16_t version;
4623         uint8_t isa_level, isa_rev, gpr_size, cpr1_size, cpr2_size, fp_abi;
4624
4625         if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
4626                 elferr = elf_errno();
4627                 if (elferr != 0)
4628                         warnx("elf_rawdata failed: %s",
4629                             elf_errmsg(elferr));
4630                 return;
4631         }
4632         if (d->d_size != 24) {
4633                 warnx("invalid MIPS abiflags section size");
4634                 return;
4635         }
4636
4637         p = d->d_buf;
4638         version = re->dw_decode(&p, 2);
4639         printf("MIPS ABI Flags Version: %u", version);
4640         if (version != 0) {
4641                 printf(" (unknown)\n\n");
4642                 return;
4643         }
4644         printf("\n\n");
4645
4646         isa_level = re->dw_decode(&p, 1);
4647         isa_rev = re->dw_decode(&p, 1);
4648         gpr_size = re->dw_decode(&p, 1);
4649         cpr1_size = re->dw_decode(&p, 1);
4650         cpr2_size = re->dw_decode(&p, 1);
4651         fp_abi = re->dw_decode(&p, 1);
4652         isa_ext = re->dw_decode(&p, 4);
4653         ases = re->dw_decode(&p, 4);
4654         flags1 = re->dw_decode(&p, 4);
4655         flags2 = re->dw_decode(&p, 4);
4656
4657         printf("ISA: ");
4658         if (isa_rev <= 1)
4659                 printf("MIPS%u\n", isa_level);
4660         else
4661                 printf("MIPS%ur%u\n", isa_level, isa_rev);
4662         printf("GPR size: %d\n", get_mips_register_size(gpr_size));
4663         printf("CPR1 size: %d\n", get_mips_register_size(cpr1_size));
4664         printf("CPR2 size: %d\n", get_mips_register_size(cpr2_size));
4665         printf("FP ABI: ");
4666         switch (fp_abi) {
4667         case 3:
4668                 printf("Soft float");
4669                 break;
4670         default:
4671                 printf("%u", fp_abi);
4672                 break;
4673         }
4674         printf("\nISA Extension: %u\n", isa_ext);
4675         printf("ASEs: %u\n", ases);
4676         printf("FLAGS 1: %08x\n", flags1);
4677         printf("FLAGS 2: %08x\n", flags2);
4678 }
4679
4680 static int
4681 get_mips_register_size(uint8_t flag)
4682 {
4683         switch (flag) {
4684         case 0: return 0;
4685         case 1: return 32;
4686         case 2: return 64;
4687         case 3: return 128;
4688         default: return -1;
4689         }
4690 }
4691 static void
4692 dump_mips_reginfo(struct readelf *re, struct section *s)
4693 {
4694         Elf_Data *d;
4695         int elferr, len;
4696
4697         (void) elf_errno();
4698         if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
4699                 elferr = elf_errno();
4700                 if (elferr != 0)
4701                         warnx("elf_rawdata failed: %s",
4702                             elf_errmsg(elferr));
4703                 return;
4704         }
4705         if (d->d_size <= 0)
4706                 return;
4707         if (!get_ent_count(s, &len))
4708                 return;
4709
4710         printf("\nSection '%s' contains %d entries:\n", s->name, len);
4711         dump_mips_odk_reginfo(re, d->d_buf, d->d_size);
4712 }
4713
4714 static void
4715 dump_mips_options(struct readelf *re, struct section *s)
4716 {
4717         Elf_Data *d;
4718         uint32_t info;
4719         uint16_t sndx;
4720         uint8_t *p, *pe;
4721         uint8_t kind, size;
4722         int elferr;
4723
4724         (void) elf_errno();
4725         if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
4726                 elferr = elf_errno();
4727                 if (elferr != 0)
4728                         warnx("elf_rawdata failed: %s",
4729                             elf_errmsg(elferr));
4730                 return;
4731         }
4732         if (d->d_size == 0)
4733                 return;
4734
4735         printf("\nSection %s contains:\n", s->name);
4736         p = d->d_buf;
4737         pe = p + d->d_size;
4738         while (p < pe) {
4739                 if (pe - p < 8) {
4740                         warnx("Truncated MIPS option header");
4741                         return;
4742                 }
4743                 kind = re->dw_decode(&p, 1);
4744                 size = re->dw_decode(&p, 1);
4745                 sndx = re->dw_decode(&p, 2);
4746                 info = re->dw_decode(&p, 4);
4747                 if (size < 8 || size - 8 > pe - p) {
4748                         warnx("Malformed MIPS option header");
4749                         return;
4750                 }
4751                 size -= 8;
4752                 switch (kind) {
4753                 case ODK_REGINFO:
4754                         dump_mips_odk_reginfo(re, p, size);
4755                         break;
4756                 case ODK_EXCEPTIONS:
4757                         printf(" EXCEPTIONS FPU_MIN: %#x\n",
4758                             info & OEX_FPU_MIN);
4759                         printf("%11.11s FPU_MAX: %#x\n", "",
4760                             info & OEX_FPU_MAX);
4761                         dump_mips_option_flags("", mips_exceptions_option,
4762                             info);
4763                         break;
4764                 case ODK_PAD:
4765                         printf(" %-10.10s section: %ju\n", "OPAD",
4766                             (uintmax_t) sndx);
4767                         dump_mips_option_flags("", mips_pad_option, info);
4768                         break;
4769                 case ODK_HWPATCH:
4770                         dump_mips_option_flags("HWPATCH", mips_hwpatch_option,
4771                             info);
4772                         break;
4773                 case ODK_HWAND:
4774                         dump_mips_option_flags("HWAND", mips_hwa_option, info);
4775                         break;
4776                 case ODK_HWOR:
4777                         dump_mips_option_flags("HWOR", mips_hwo_option, info);
4778                         break;
4779                 case ODK_FILL:
4780                         printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info);
4781                         break;
4782                 case ODK_TAGS:
4783                         printf(" %-10.10s\n", "TAGS");
4784                         break;
4785                 case ODK_GP_GROUP:
4786                         printf(" %-10.10s GP group number: %#x\n", "GP_GROUP",
4787                             info & 0xFFFF);
4788                         if (info & 0x10000)
4789                                 printf(" %-10.10s GP group is "
4790                                     "self-contained\n", "");
4791                         break;
4792                 case ODK_IDENT:
4793                         printf(" %-10.10s default GP group number: %#x\n",
4794                             "IDENT", info & 0xFFFF);
4795                         if (info & 0x10000)
4796                                 printf(" %-10.10s default GP group is "
4797                                     "self-contained\n", "");
4798                         break;
4799                 case ODK_PAGESIZE:
4800                         printf(" %-10.10s\n", "PAGESIZE");
4801                         break;
4802                 default:
4803                         break;
4804                 }
4805                 p += size;
4806         }
4807 }
4808
4809 static void
4810 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info)
4811 {
4812         int first;
4813
4814         first = 1;
4815         for (; opt->desc != NULL; opt++) {
4816                 if (info & opt->flag) {
4817                         printf(" %-10.10s %s\n", first ? name : "",
4818                             opt->desc);
4819                         first = 0;
4820                 }
4821         }
4822 }
4823
4824 static void
4825 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz)
4826 {
4827         uint32_t ri_gprmask;
4828         uint32_t ri_cprmask[4];
4829         uint64_t ri_gp_value;
4830         uint8_t *pe;
4831         int i;
4832
4833         pe = p + sz;
4834         while (p < pe) {
4835                 ri_gprmask = re->dw_decode(&p, 4);
4836                 /* Skip ri_pad padding field for mips64. */
4837                 if (re->ec == ELFCLASS64)
4838                         re->dw_decode(&p, 4);
4839                 for (i = 0; i < 4; i++)
4840                         ri_cprmask[i] = re->dw_decode(&p, 4);
4841                 if (re->ec == ELFCLASS32)
4842                         ri_gp_value = re->dw_decode(&p, 4);
4843                 else
4844                         ri_gp_value = re->dw_decode(&p, 8);
4845                 printf(" %s    ", option_kind(ODK_REGINFO));
4846                 printf("ri_gprmask:    0x%08jx\n", (uintmax_t) ri_gprmask);
4847                 for (i = 0; i < 4; i++)
4848                         printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i,
4849                             (uintmax_t) ri_cprmask[i]);
4850                 printf("%12.12s", "");
4851                 printf("ri_gp_value:   %#jx\n", (uintmax_t) ri_gp_value);
4852         }
4853 }
4854
4855 static void
4856 dump_arch_specific_info(struct readelf *re)
4857 {
4858
4859         dump_liblist(re);
4860         dump_attributes(re);
4861
4862         switch (re->ehdr.e_machine) {
4863         case EM_MIPS:
4864         case EM_MIPS_RS3_LE:
4865                 dump_mips_specific_info(re);
4866         default:
4867                 break;
4868         }
4869 }
4870
4871 static const char *
4872 dwarf_regname(struct readelf *re, unsigned int num)
4873 {
4874         static char rx[32];
4875         const char *rn;
4876
4877         if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL)
4878                 return (rn);
4879
4880         snprintf(rx, sizeof(rx), "r%u", num);
4881
4882         return (rx);
4883 }
4884
4885 static void
4886 dump_dwarf_line(struct readelf *re)
4887 {
4888         struct section *s;
4889         Dwarf_Die die;
4890         Dwarf_Error de;
4891         Dwarf_Half tag, version, pointer_size;
4892         Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize;
4893         Dwarf_Small minlen, defstmt, lrange, opbase, oplen;
4894         Elf_Data *d;
4895         char *pn;
4896         uint64_t address, file, line, column, isa, opsize, udelta;
4897         int64_t sdelta;
4898         uint8_t *p, *pe;
4899         int8_t lbase;
4900         int i, is_stmt, dwarf_size, elferr, ret;
4901
4902         printf("\nDump of debug contents of section .debug_line:\n");
4903
4904         s = NULL;
4905         for (i = 0; (size_t) i < re->shnum; i++) {
4906                 s = &re->sl[i];
4907                 if (s->name != NULL && !strcmp(s->name, ".debug_line"))
4908                         break;
4909         }
4910         if ((size_t) i >= re->shnum)
4911                 return;
4912
4913         (void) elf_errno();
4914         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4915                 elferr = elf_errno();
4916                 if (elferr != 0)
4917                         warnx("elf_getdata failed: %s", elf_errmsg(-1));
4918                 return;
4919         }
4920         if (d->d_size <= 0)
4921                 return;
4922
4923         while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL,
4924             NULL, &de)) ==  DW_DLV_OK) {
4925                 die = NULL;
4926                 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) {
4927                         if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
4928                                 warnx("dwarf_tag failed: %s",
4929                                     dwarf_errmsg(de));
4930                                 return;
4931                         }
4932                         /* XXX: What about DW_TAG_partial_unit? */
4933                         if (tag == DW_TAG_compile_unit)
4934                                 break;
4935                 }
4936                 if (die == NULL) {
4937                         warnx("could not find DW_TAG_compile_unit die");
4938                         return;
4939                 }
4940                 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset,
4941                     &de) != DW_DLV_OK) {
4942                         dwarf_dealloc(re->dbg, die, DW_DLA_DIE);
4943                         continue;
4944                 }
4945
4946                 length = re->dw_read(d, &offset, 4);
4947                 if (length == 0xffffffff) {
4948                         dwarf_size = 8;
4949                         length = re->dw_read(d, &offset, 8);
4950                 } else
4951                         dwarf_size = 4;
4952
4953                 if (length > d->d_size - offset) {
4954                         warnx("invalid .dwarf_line section");
4955                         dwarf_dealloc(re->dbg, die, DW_DLA_DIE);
4956                         continue;
4957                 }
4958
4959                 endoff = offset + length;
4960                 pe = (uint8_t *) d->d_buf + endoff;
4961                 version = re->dw_read(d, &offset, 2);
4962                 hdrlen = re->dw_read(d, &offset, dwarf_size);
4963                 minlen = re->dw_read(d, &offset, 1);
4964                 defstmt = re->dw_read(d, &offset, 1);
4965                 lbase = re->dw_read(d, &offset, 1);
4966                 lrange = re->dw_read(d, &offset, 1);
4967                 opbase = re->dw_read(d, &offset, 1);
4968
4969                 printf("\n");
4970                 printf("  Length:\t\t\t%ju\n", (uintmax_t) length);
4971                 printf("  DWARF version:\t\t%u\n", version);
4972                 printf("  Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen);
4973                 printf("  Minimum Instruction Length:\t%u\n", minlen);
4974                 printf("  Initial value of 'is_stmt':\t%u\n", defstmt);
4975                 printf("  Line Base:\t\t\t%d\n", lbase);
4976                 printf("  Line Range:\t\t\t%u\n", lrange);
4977                 printf("  Opcode Base:\t\t\t%u\n", opbase);
4978                 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de);
4979                 printf("  (Pointer size:\t\t%u)\n", pointer_size);
4980
4981                 printf("\n");
4982                 printf(" Opcodes:\n");
4983                 for (i = 1; i < opbase; i++) {
4984                         oplen = re->dw_read(d, &offset, 1);
4985                         printf("  Opcode %d has %u args\n", i, oplen);
4986                 }
4987
4988                 printf("\n");
4989                 printf(" The Directory Table:\n");
4990                 p = (uint8_t *) d->d_buf + offset;
4991                 while (*p != '\0') {
4992                         printf("  %s\n", (char *) p);
4993                         p += strlen((char *) p) + 1;
4994                 }
4995
4996                 p++;
4997                 printf("\n");
4998                 printf(" The File Name Table:\n");
4999                 printf("  Entry\tDir\tTime\tSize\tName\n");
5000                 i = 0;
5001                 while (*p != '\0') {
5002                         i++;
5003                         pn = (char *) p;
5004                         p += strlen(pn) + 1;
5005                         dirndx = _decode_uleb128(&p, pe);
5006                         mtime = _decode_uleb128(&p, pe);
5007                         fsize = _decode_uleb128(&p, pe);
5008                         printf("  %d\t%ju\t%ju\t%ju\t%s\n", i,
5009                             (uintmax_t) dirndx, (uintmax_t) mtime,
5010                             (uintmax_t) fsize, pn);
5011                 }
5012
5013 #define RESET_REGISTERS                                         \
5014         do {                                                    \
5015                 address        = 0;                             \
5016                 file           = 1;                             \
5017                 line           = 1;                             \
5018                 column         = 0;                             \
5019                 is_stmt        = defstmt;                       \
5020         } while(0)
5021
5022 #define LINE(x) (lbase + (((x) - opbase) % lrange))
5023 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen)
5024
5025                 p++;
5026                 printf("\n");
5027                 printf(" Line Number Statements:\n");
5028
5029                 RESET_REGISTERS;
5030
5031                 while (p < pe) {
5032
5033                         if (*p == 0) {
5034                                 /*
5035                                  * Extended Opcodes.
5036                                  */
5037                                 p++;
5038                                 opsize = _decode_uleb128(&p, pe);
5039                                 printf("  Extended opcode %u: ", *p);
5040                                 switch (*p) {
5041                                 case DW_LNE_end_sequence:
5042                                         p++;
5043                                         RESET_REGISTERS;
5044                                         printf("End of Sequence\n");
5045                                         break;
5046                                 case DW_LNE_set_address:
5047                                         p++;
5048                                         address = re->dw_decode(&p,
5049                                             pointer_size);
5050                                         printf("set Address to %#jx\n",
5051                                             (uintmax_t) address);
5052                                         break;
5053                                 case DW_LNE_define_file:
5054                                         p++;
5055                                         pn = (char *) p;
5056                                         p += strlen(pn) + 1;
5057                                         dirndx = _decode_uleb128(&p, pe);
5058                                         mtime = _decode_uleb128(&p, pe);
5059                                         fsize = _decode_uleb128(&p, pe);
5060                                         printf("define new file: %s\n", pn);
5061                                         break;
5062                                 default:
5063                                         /* Unrecognized extened opcodes. */
5064                                         p += opsize;
5065                                         printf("unknown opcode\n");
5066                                 }
5067                         } else if (*p > 0 && *p < opbase) {
5068                                 /*
5069                                  * Standard Opcodes.
5070                                  */
5071                                 switch(*p++) {
5072                                 case DW_LNS_copy:
5073                                         printf("  Copy\n");
5074                                         break;
5075                                 case DW_LNS_advance_pc:
5076                                         udelta = _decode_uleb128(&p, pe) *
5077                                             minlen;
5078                                         address += udelta;
5079                                         printf("  Advance PC by %ju to %#jx\n",
5080                                             (uintmax_t) udelta,
5081                                             (uintmax_t) address);
5082                                         break;
5083                                 case DW_LNS_advance_line:
5084                                         sdelta = _decode_sleb128(&p, pe);
5085                                         line += sdelta;
5086                                         printf("  Advance Line by %jd to %ju\n",
5087                                             (intmax_t) sdelta,
5088                                             (uintmax_t) line);
5089                                         break;
5090                                 case DW_LNS_set_file:
5091                                         file = _decode_uleb128(&p, pe);
5092                                         printf("  Set File to %ju\n",
5093                                             (uintmax_t) file);
5094                                         break;
5095                                 case DW_LNS_set_column:
5096                                         column = _decode_uleb128(&p, pe);
5097                                         printf("  Set Column to %ju\n",
5098                                             (uintmax_t) column);
5099                                         break;
5100                                 case DW_LNS_negate_stmt:
5101                                         is_stmt = !is_stmt;
5102                                         printf("  Set is_stmt to %d\n", is_stmt);
5103                                         break;
5104                                 case DW_LNS_set_basic_block:
5105                                         printf("  Set basic block flag\n");
5106                                         break;
5107                                 case DW_LNS_const_add_pc:
5108                                         address += ADDRESS(255);
5109                                         printf("  Advance PC by constant %ju"
5110                                             " to %#jx\n",
5111                                             (uintmax_t) ADDRESS(255),
5112                                             (uintmax_t) address);
5113                                         break;
5114                                 case DW_LNS_fixed_advance_pc:
5115                                         udelta = re->dw_decode(&p, 2);
5116                                         address += udelta;
5117                                         printf("  Advance PC by fixed value "
5118                                             "%ju to %#jx\n",
5119                                             (uintmax_t) udelta,
5120                                             (uintmax_t) address);
5121                                         break;
5122                                 case DW_LNS_set_prologue_end:
5123                                         printf("  Set prologue end flag\n");
5124                                         break;
5125                                 case DW_LNS_set_epilogue_begin:
5126                                         printf("  Set epilogue begin flag\n");
5127                                         break;
5128                                 case DW_LNS_set_isa:
5129                                         isa = _decode_uleb128(&p, pe);
5130                                         printf("  Set isa to %ju\n",
5131                                             (uintmax_t) isa);
5132                                         break;
5133                                 default:
5134                                         /* Unrecognized extended opcodes. */
5135                                         printf("  Unknown extended opcode %u\n",
5136                                             *(p - 1));
5137                                         break;
5138                                 }
5139
5140                         } else {
5141                                 /*
5142                                  * Special Opcodes.
5143                                  */
5144                                 line += LINE(*p);
5145                                 address += ADDRESS(*p);
5146                                 printf("  Special opcode %u: advance Address "
5147                                     "by %ju to %#jx and Line by %jd to %ju\n",
5148                                     *p - opbase, (uintmax_t) ADDRESS(*p),
5149                                     (uintmax_t) address, (intmax_t) LINE(*p),
5150                                     (uintmax_t) line);
5151                                 p++;
5152                         }
5153                 }
5154                 dwarf_dealloc(re->dbg, die, DW_DLA_DIE);
5155         }
5156         if (ret == DW_DLV_ERROR)
5157                 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
5158
5159 #undef  RESET_REGISTERS
5160 #undef  LINE
5161 #undef  ADDRESS
5162 }
5163
5164 static void
5165 dump_dwarf_line_decoded(struct readelf *re)
5166 {
5167         Dwarf_Die die;
5168         Dwarf_Line *linebuf, ln;
5169         Dwarf_Addr lineaddr;
5170         Dwarf_Signed linecount, srccount;
5171         Dwarf_Unsigned lineno, fn;
5172         Dwarf_Error de;
5173         const char *dir, *file;
5174         char **srcfiles;
5175         int i, ret;
5176
5177         printf("Decoded dump of debug contents of section .debug_line:\n\n");
5178         while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL,
5179             NULL, &de)) == DW_DLV_OK) {
5180                 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK)
5181                         continue;
5182                 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) !=
5183                     DW_DLV_OK)
5184                         file = NULL;
5185                 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) !=
5186                     DW_DLV_OK)
5187                         dir = NULL;
5188                 printf("CU: ");
5189                 if (dir && file && file[0] != '/')
5190                         printf("%s/", dir);
5191                 if (file)
5192                         printf("%s", file);
5193                 putchar('\n');
5194                 printf("%-37s %11s   %s\n", "Filename", "Line Number",
5195                     "Starting Address");
5196                 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK)
5197                         goto done;
5198                 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK)
5199                         goto done;
5200                 for (i = 0; i < linecount; i++) {
5201                         ln = linebuf[i];
5202                         if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK)
5203                                 continue;
5204                         if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK)
5205                                 continue;
5206                         if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK)
5207                                 continue;
5208                         printf("%-37s %11ju %#18jx\n",
5209                             basename(srcfiles[fn - 1]), (uintmax_t) lineno,
5210                             (uintmax_t) lineaddr);
5211                 }
5212                 putchar('\n');
5213 done:
5214                 dwarf_dealloc(re->dbg, die, DW_DLA_DIE);
5215         }
5216 }
5217
5218 static void
5219 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level)
5220 {
5221         Dwarf_Attribute *attr_list;
5222         Dwarf_Die ret_die;
5223         Dwarf_Off dieoff, cuoff, culen, attroff;
5224         Dwarf_Unsigned ate, lang, v_udata, v_sig;
5225         Dwarf_Signed attr_count, v_sdata;
5226         Dwarf_Off v_off;
5227         Dwarf_Addr v_addr;
5228         Dwarf_Half tag, attr, form;
5229         Dwarf_Block *v_block;
5230         Dwarf_Bool v_bool, is_info;
5231         Dwarf_Sig8 v_sig8;
5232         Dwarf_Error de;
5233         Dwarf_Ptr v_expr;
5234         const char *tag_str, *attr_str, *ate_str, *lang_str;
5235         char unk_tag[32], unk_attr[32];
5236         char *v_str;
5237         uint8_t *b, *p;
5238         int i, j, abc, ret;
5239
5240         if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) {
5241                 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de));
5242                 goto cont_search;
5243         }
5244
5245         printf(" <%d><%jx>: ", level, (uintmax_t) dieoff);
5246
5247         if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) {
5248                 warnx("dwarf_die_CU_offset_range failed: %s",
5249                       dwarf_errmsg(de));
5250                 cuoff = 0;
5251         }
5252
5253         abc = dwarf_die_abbrev_code(die);
5254         if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
5255                 warnx("dwarf_tag failed: %s", dwarf_errmsg(de));
5256                 goto cont_search;
5257         }
5258         if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) {
5259                 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag);
5260                 tag_str = unk_tag;
5261         }
5262
5263         printf("Abbrev Number: %d (%s)\n", abc, tag_str);
5264
5265         if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) !=
5266             DW_DLV_OK) {
5267                 if (ret == DW_DLV_ERROR)
5268                         warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de));
5269                 goto cont_search;
5270         }
5271
5272         for (i = 0; i < attr_count; i++) {
5273                 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) {
5274                         warnx("dwarf_whatform failed: %s", dwarf_errmsg(de));
5275                         continue;
5276                 }
5277                 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) {
5278                         warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de));
5279                         continue;
5280                 }
5281                 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) {
5282                         snprintf(unk_attr, sizeof(unk_attr),
5283                             "[Unknown AT: %#x]", attr);
5284                         attr_str = unk_attr;
5285                 }
5286                 if (dwarf_attroffset(attr_list[i], &attroff, &de) !=
5287                     DW_DLV_OK) {
5288                         warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de));
5289                         attroff = 0;
5290                 }
5291                 printf("    <%jx>   %-18s: ", (uintmax_t) attroff, attr_str);
5292                 switch (form) {
5293                 case DW_FORM_ref_addr:
5294                 case DW_FORM_sec_offset:
5295                         if (dwarf_global_formref(attr_list[i], &v_off, &de) !=
5296                             DW_DLV_OK) {
5297                                 warnx("dwarf_global_formref failed: %s",
5298                                     dwarf_errmsg(de));
5299                                 continue;
5300                         }
5301                         if (form == DW_FORM_ref_addr)
5302                                 printf("<0x%jx>", (uintmax_t) v_off);
5303                         else
5304                                 printf("0x%jx", (uintmax_t) v_off);
5305                         break;
5306
5307                 case DW_FORM_ref1:
5308                 case DW_FORM_ref2:
5309                 case DW_FORM_ref4:
5310                 case DW_FORM_ref8:
5311                 case DW_FORM_ref_udata:
5312                         if (dwarf_formref(attr_list[i], &v_off, &de) !=
5313                             DW_DLV_OK) {
5314                                 warnx("dwarf_formref failed: %s",
5315                                     dwarf_errmsg(de));
5316                                 continue;
5317                         }
5318                         v_off += cuoff;
5319                         printf("<0x%jx>", (uintmax_t) v_off);
5320                         break;
5321
5322                 case DW_FORM_addr:
5323                         if (dwarf_formaddr(attr_list[i], &v_addr, &de) !=
5324                             DW_DLV_OK) {
5325                                 warnx("dwarf_formaddr failed: %s",
5326                                     dwarf_errmsg(de));
5327                                 continue;
5328                         }
5329                         printf("%#jx", (uintmax_t) v_addr);
5330                         break;
5331
5332                 case DW_FORM_data1:
5333                 case DW_FORM_data2:
5334                 case DW_FORM_data4:
5335                 case DW_FORM_data8:
5336                 case DW_FORM_udata:
5337                         if (dwarf_formudata(attr_list[i], &v_udata, &de) !=
5338                             DW_DLV_OK) {
5339                                 warnx("dwarf_formudata failed: %s",
5340                                     dwarf_errmsg(de));
5341                                 continue;
5342                         }
5343                         if (attr == DW_AT_high_pc)
5344                                 printf("0x%jx", (uintmax_t) v_udata);
5345                         else
5346                                 printf("%ju", (uintmax_t) v_udata);
5347                         break;
5348
5349                 case DW_FORM_sdata:
5350                         if (dwarf_formsdata(attr_list[i], &v_sdata, &de) !=
5351                             DW_DLV_OK) {
5352                                 warnx("dwarf_formudata failed: %s",
5353                                     dwarf_errmsg(de));
5354                                 continue;
5355                         }
5356                         printf("%jd", (intmax_t) v_sdata);
5357                         break;
5358
5359                 case DW_FORM_flag:
5360                         if (dwarf_formflag(attr_list[i], &v_bool, &de) !=
5361                             DW_DLV_OK) {
5362                                 warnx("dwarf_formflag failed: %s",
5363                                     dwarf_errmsg(de));
5364                                 continue;
5365                         }
5366                         printf("%jd", (intmax_t) v_bool);
5367                         break;
5368
5369                 case DW_FORM_flag_present:
5370                         putchar('1');
5371                         break;
5372
5373                 case DW_FORM_string:
5374                 case DW_FORM_strp:
5375                         if (dwarf_formstring(attr_list[i], &v_str, &de) !=
5376                             DW_DLV_OK) {
5377                                 warnx("dwarf_formstring failed: %s",
5378                                     dwarf_errmsg(de));
5379                                 continue;
5380                         }
5381                         if (form == DW_FORM_string)
5382                                 printf("%s", v_str);
5383                         else
5384                                 printf("(indirect string) %s", v_str);
5385                         break;
5386
5387                 case DW_FORM_block:
5388                 case DW_FORM_block1:
5389                 case DW_FORM_block2:
5390                 case DW_FORM_block4:
5391                         if (dwarf_formblock(attr_list[i], &v_block, &de) !=
5392                             DW_DLV_OK) {
5393                                 warnx("dwarf_formblock failed: %s",
5394                                     dwarf_errmsg(de));
5395                                 continue;
5396                         }
5397                         printf("%ju byte block:", (uintmax_t) v_block->bl_len);
5398                         b = v_block->bl_data;
5399                         for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++)
5400                                 printf(" %x", b[j]);
5401                         printf("\t(");
5402                         dump_dwarf_block(re, v_block->bl_data, v_block->bl_len);
5403                         putchar(')');
5404                         break;
5405
5406                 case DW_FORM_exprloc:
5407                         if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr,
5408                             &de) != DW_DLV_OK) {
5409                                 warnx("dwarf_formexprloc failed: %s",
5410                                     dwarf_errmsg(de));
5411                                 continue;
5412                         }
5413                         printf("%ju byte block:", (uintmax_t) v_udata);
5414                         b = v_expr;
5415                         for (j = 0; (Dwarf_Unsigned) j < v_udata; j++)
5416                                 printf(" %x", b[j]);
5417                         printf("\t(");
5418                         dump_dwarf_block(re, v_expr, v_udata);
5419                         putchar(')');
5420                         break;
5421
5422                 case DW_FORM_ref_sig8:
5423                         if (dwarf_formsig8(attr_list[i], &v_sig8, &de) !=
5424                             DW_DLV_OK) {
5425                                 warnx("dwarf_formsig8 failed: %s",
5426                                     dwarf_errmsg(de));
5427                                 continue;
5428                         }
5429                         p = (uint8_t *)(uintptr_t) &v_sig8.signature[0];
5430                         v_sig = re->dw_decode(&p, 8);
5431                         printf("signature: 0x%jx", (uintmax_t) v_sig);
5432                 }
5433                 switch (attr) {
5434                 case DW_AT_encoding:
5435                         if (dwarf_attrval_unsigned(die, attr, &ate, &de) !=
5436                             DW_DLV_OK)
5437                                 break;
5438                         if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK)
5439                                 ate_str = "DW_ATE_UNKNOWN";
5440                         printf("\t(%s)", &ate_str[strlen("DW_ATE_")]);
5441                         break;
5442
5443                 case DW_AT_language:
5444                         if (dwarf_attrval_unsigned(die, attr, &lang, &de) !=
5445                             DW_DLV_OK)
5446                                 break;
5447                         if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK)
5448                                 break;
5449                         printf("\t(%s)", &lang_str[strlen("DW_LANG_")]);
5450                         break;
5451
5452                 case DW_AT_location:
5453                 case DW_AT_string_length:
5454                 case DW_AT_return_addr:
5455                 case DW_AT_data_member_location:
5456                 case DW_AT_frame_base:
5457                 case DW_AT_segment:
5458                 case DW_AT_static_link:
5459                 case DW_AT_use_location:
5460                 case DW_AT_vtable_elem_location:
5461                         switch (form) {
5462                         case DW_FORM_data4:
5463                         case DW_FORM_data8:
5464                         case DW_FORM_sec_offset:
5465                                 printf("\t(location list)");
5466                                 break;
5467                         default:
5468                                 break;
5469                         }
5470
5471                 default:
5472                         break;
5473                 }
5474                 putchar('\n');
5475         }
5476
5477
5478 cont_search:
5479         /* Search children. */
5480         ret = dwarf_child(die, &ret_die, &de);
5481         if (ret == DW_DLV_ERROR)
5482                 warnx("dwarf_child: %s", dwarf_errmsg(de));
5483         else if (ret == DW_DLV_OK)
5484                 dump_dwarf_die(re, ret_die, level + 1);
5485
5486         /* Search sibling. */
5487         is_info = dwarf_get_die_infotypes_flag(die);
5488         ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de);
5489         if (ret == DW_DLV_ERROR)
5490                 warnx("dwarf_siblingof: %s", dwarf_errmsg(de));
5491         else if (ret == DW_DLV_OK)
5492                 dump_dwarf_die(re, ret_die, level);
5493
5494         dwarf_dealloc(re->dbg, die, DW_DLA_DIE);
5495 }
5496
5497 static void
5498 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize,
5499     Dwarf_Half ver)
5500 {
5501
5502         re->cu_psize = psize;
5503         re->cu_osize = osize;
5504         re->cu_ver = ver;
5505 }
5506
5507 static void
5508 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info)
5509 {
5510         struct section *s;
5511         Dwarf_Die die;
5512         Dwarf_Error de;
5513         Dwarf_Half tag, version, pointer_size, off_size;
5514         Dwarf_Off cu_offset, cu_length;
5515         Dwarf_Off aboff;
5516         Dwarf_Unsigned typeoff;
5517         Dwarf_Sig8 sig8;
5518         Dwarf_Unsigned sig;
5519         uint8_t *p;
5520         const char *sn;
5521         int i, ret;
5522
5523         sn = is_info ? ".debug_info" : ".debug_types";
5524
5525         s = NULL;
5526         for (i = 0; (size_t) i < re->shnum; i++) {
5527                 s = &re->sl[i];
5528                 if (s->name != NULL && !strcmp(s->name, sn))
5529                         break;
5530         }
5531         if ((size_t) i >= re->shnum)
5532                 return;
5533
5534         do {
5535                 printf("\nDump of debug contents of section %s:\n", sn);
5536
5537                 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL,
5538                     &version, &aboff, &pointer_size, &off_size, NULL, &sig8,
5539                     &typeoff, NULL, &de)) == DW_DLV_OK) {
5540                         set_cu_context(re, pointer_size, off_size, version);
5541                         die = NULL;
5542                         while (dwarf_siblingof_b(re->dbg, die, &die, is_info,
5543                             &de) == DW_DLV_OK) {
5544                                 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
5545                                         warnx("dwarf_tag failed: %s",
5546                                             dwarf_errmsg(de));
5547                                         continue;
5548                                 }
5549                                 /* XXX: What about DW_TAG_partial_unit? */
5550                                 if ((is_info && tag == DW_TAG_compile_unit) ||
5551                                     (!is_info && tag == DW_TAG_type_unit))
5552                                         break;
5553                         }
5554                         if (die == NULL && is_info) {
5555                                 warnx("could not find DW_TAG_compile_unit "
5556                                     "die");
5557                                 continue;
5558                         } else if (die == NULL && !is_info) {
5559                                 warnx("could not find DW_TAG_type_unit die");
5560                                 continue;
5561                         }
5562
5563                         if (dwarf_die_CU_offset_range(die, &cu_offset,
5564                             &cu_length, &de) != DW_DLV_OK) {
5565                                 warnx("dwarf_die_CU_offset failed: %s",
5566                                     dwarf_errmsg(de));
5567                                 continue;
5568                         }
5569
5570                         cu_length -= off_size == 4 ? 4 : 12;
5571
5572                         sig = 0;
5573                         if (!is_info) {
5574                                 p = (uint8_t *)(uintptr_t) &sig8.signature[0];
5575                                 sig = re->dw_decode(&p, 8);
5576                         }
5577
5578                         printf("\n  Type Unit @ offset 0x%jx:\n",
5579                             (uintmax_t) cu_offset);
5580                         printf("    Length:\t\t%#jx (%d-bit)\n",
5581                             (uintmax_t) cu_length, off_size == 4 ? 32 : 64);
5582                         printf("    Version:\t\t%u\n", version);
5583                         printf("    Abbrev Offset:\t0x%jx\n",
5584                             (uintmax_t) aboff);
5585                         printf("    Pointer Size:\t%u\n", pointer_size);
5586                         if (!is_info) {
5587                                 printf("    Signature:\t\t0x%016jx\n",
5588                                     (uintmax_t) sig);
5589                                 printf("    Type Offset:\t0x%jx\n",
5590                                     (uintmax_t) typeoff);
5591                         }
5592
5593                         dump_dwarf_die(re, die, 0);
5594                 }
5595                 if (ret == DW_DLV_ERROR)
5596                         warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
5597                 if (is_info)
5598                         break;
5599         } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK);
5600 }
5601
5602 static void
5603 dump_dwarf_abbrev(struct readelf *re)
5604 {
5605         Dwarf_Abbrev ab;
5606         Dwarf_Off aboff, atoff;
5607         Dwarf_Unsigned length, attr_count;
5608         Dwarf_Signed flag, form;
5609         Dwarf_Half tag, attr;
5610         Dwarf_Error de;
5611         const char *tag_str, *attr_str, *form_str;
5612         char unk_tag[32], unk_attr[32], unk_form[32];
5613         int i, j, ret;
5614
5615         printf("\nContents of section .debug_abbrev:\n\n");
5616
5617         while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff,
5618             NULL, NULL, &de)) ==  DW_DLV_OK) {
5619                 printf("  Number TAG\n");
5620                 i = 0;
5621                 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length,
5622                     &attr_count, &de)) == DW_DLV_OK) {
5623                         if (length == 1) {
5624                                 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV);
5625                                 break;
5626                         }
5627                         aboff += length;
5628                         printf("%4d", ++i);
5629                         if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) {
5630                                 warnx("dwarf_get_abbrev_tag failed: %s",
5631                                     dwarf_errmsg(de));
5632                                 goto next_abbrev;
5633                         }
5634                         if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) {
5635                                 snprintf(unk_tag, sizeof(unk_tag),
5636                                     "[Unknown Tag: %#x]", tag);
5637                                 tag_str = unk_tag;
5638                         }
5639                         if (dwarf_get_abbrev_children_flag(ab, &flag, &de) !=
5640                             DW_DLV_OK) {
5641                                 warnx("dwarf_get_abbrev_children_flag failed:"
5642                                     " %s", dwarf_errmsg(de));
5643                                 goto next_abbrev;
5644                         }
5645                         printf("      %s    %s\n", tag_str,
5646                             flag ? "[has children]" : "[no children]");
5647                         for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) {
5648                                 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j,
5649                                     &attr, &form, &atoff, &de) != DW_DLV_OK) {
5650                                         warnx("dwarf_get_abbrev_entry failed:"
5651                                             " %s", dwarf_errmsg(de));
5652                                         continue;
5653                                 }
5654                                 if (dwarf_get_AT_name(attr, &attr_str) !=
5655                                     DW_DLV_OK) {
5656                                         snprintf(unk_attr, sizeof(unk_attr),
5657                                             "[Unknown AT: %#x]", attr);
5658                                         attr_str = unk_attr;
5659                                 }
5660                                 if (dwarf_get_FORM_name(form, &form_str) !=
5661                                     DW_DLV_OK) {
5662                                         snprintf(unk_form, sizeof(unk_form),
5663                                             "[Unknown Form: %#x]",
5664                                             (Dwarf_Half) form);
5665                                         form_str = unk_form;
5666                                 }
5667                                 printf("    %-18s %s\n", attr_str, form_str);
5668                         }
5669                 next_abbrev:
5670                         dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV);
5671                 }
5672                 if (ret != DW_DLV_OK)
5673                         warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de));
5674         }
5675         if (ret == DW_DLV_ERROR)
5676                 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
5677 }
5678
5679 static void
5680 dump_dwarf_pubnames(struct readelf *re)
5681 {
5682         struct section *s;
5683         Dwarf_Off die_off;
5684         Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length;
5685         Dwarf_Signed cnt;
5686         Dwarf_Global *globs;
5687         Dwarf_Half nt_version;
5688         Dwarf_Error de;
5689         Elf_Data *d;
5690         char *glob_name;
5691         int i, dwarf_size, elferr;
5692
5693         printf("\nContents of the .debug_pubnames section:\n");
5694
5695         s = NULL;
5696         for (i = 0; (size_t) i < re->shnum; i++) {
5697                 s = &re->sl[i];
5698                 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames"))
5699                         break;
5700         }
5701         if ((size_t) i >= re->shnum)
5702                 return;
5703
5704         (void) elf_errno();
5705         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
5706                 elferr = elf_errno();
5707                 if (elferr != 0)
5708                         warnx("elf_getdata failed: %s", elf_errmsg(-1));
5709                 return;
5710         }
5711         if (d->d_size <= 0)
5712                 return;
5713
5714         /* Read in .debug_pubnames section table header. */
5715         offset = 0;
5716         length = re->dw_read(d, &offset, 4);
5717         if (length == 0xffffffff) {
5718                 dwarf_size = 8;
5719                 length = re->dw_read(d, &offset, 8);
5720         } else
5721                 dwarf_size = 4;
5722
5723         if (length > d->d_size - offset) {
5724                 warnx("invalid .dwarf_pubnames section");
5725                 return;
5726         }
5727
5728         nt_version = re->dw_read(d, &offset, 2);
5729         nt_cu_offset = re->dw_read(d, &offset, dwarf_size);
5730         nt_cu_length = re->dw_read(d, &offset, dwarf_size);
5731         printf("  Length:\t\t\t\t%ju\n", (uintmax_t) length);
5732         printf("  Version:\t\t\t\t%u\n", nt_version);
5733         printf("  Offset into .debug_info section:\t%ju\n",
5734             (uintmax_t) nt_cu_offset);
5735         printf("  Size of area in .debug_info section:\t%ju\n",
5736             (uintmax_t) nt_cu_length);
5737
5738         if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) {
5739                 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de));
5740                 return;
5741         }
5742
5743         printf("\n    Offset      Name\n");
5744         for (i = 0; i < cnt; i++) {
5745                 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) {
5746                         warnx("dwarf_globname failed: %s", dwarf_errmsg(de));
5747                         continue;
5748                 }
5749                 if (dwarf_global_die_offset(globs[i], &die_off, &de) !=
5750                     DW_DLV_OK) {
5751                         warnx("dwarf_global_die_offset failed: %s",
5752                             dwarf_errmsg(de));
5753                         continue;
5754                 }
5755                 printf("    %-11ju %s\n", (uintmax_t) die_off, glob_name);
5756         }
5757 }
5758
5759 static void
5760 dump_dwarf_aranges(struct readelf *re)
5761 {
5762         struct section *s;
5763         Dwarf_Arange *aranges;
5764         Dwarf_Addr start;
5765         Dwarf_Unsigned offset, length, as_cu_offset;
5766         Dwarf_Off die_off;
5767         Dwarf_Signed cnt;
5768         Dwarf_Half as_version, as_addrsz, as_segsz;
5769         Dwarf_Error de;
5770         Elf_Data *d;
5771         int i, dwarf_size, elferr;
5772
5773         printf("\nContents of section .debug_aranges:\n");
5774
5775         s = NULL;
5776         for (i = 0; (size_t) i < re->shnum; i++) {
5777                 s = &re->sl[i];
5778                 if (s->name != NULL && !strcmp(s->name, ".debug_aranges"))
5779                         break;
5780         }
5781         if ((size_t) i >= re->shnum)
5782                 return;
5783
5784         (void) elf_errno();
5785         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
5786                 elferr = elf_errno();
5787                 if (elferr != 0)
5788                         warnx("elf_getdata failed: %s", elf_errmsg(-1));
5789                 return;
5790         }
5791         if (d->d_size <= 0)
5792                 return;
5793
5794         /* Read in the .debug_aranges section table header. */
5795         offset = 0;
5796         length = re->dw_read(d, &offset, 4);
5797         if (length == 0xffffffff) {
5798                 dwarf_size = 8;
5799                 length = re->dw_read(d, &offset, 8);
5800         } else
5801                 dwarf_size = 4;
5802
5803         if (length > d->d_size - offset) {
5804                 warnx("invalid .dwarf_aranges section");
5805                 return;
5806         }
5807
5808         as_version = re->dw_read(d, &offset, 2);
5809         as_cu_offset = re->dw_read(d, &offset, dwarf_size);
5810         as_addrsz = re->dw_read(d, &offset, 1);
5811         as_segsz = re->dw_read(d, &offset, 1);
5812
5813         printf("  Length:\t\t\t%ju\n", (uintmax_t) length);
5814         printf("  Version:\t\t\t%u\n", as_version);
5815         printf("  Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset);
5816         printf("  Pointer Size:\t\t\t%u\n", as_addrsz);
5817         printf("  Segment Size:\t\t\t%u\n", as_segsz);
5818
5819         if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) {
5820                 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de));
5821                 return;
5822         }
5823
5824         printf("\n    Address  Length\n");
5825         for (i = 0; i < cnt; i++) {
5826                 if (dwarf_get_arange_info(aranges[i], &start, &length,
5827                     &die_off, &de) != DW_DLV_OK) {
5828                         warnx("dwarf_get_arange_info failed: %s",
5829                             dwarf_errmsg(de));
5830                         continue;
5831                 }
5832                 printf("    %08jx %ju\n", (uintmax_t) start,
5833                     (uintmax_t) length);
5834         }
5835 }
5836
5837 static void
5838 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base)
5839 {
5840         Dwarf_Attribute *attr_list;
5841         Dwarf_Ranges *ranges;
5842         Dwarf_Die ret_die;
5843         Dwarf_Error de;
5844         Dwarf_Addr base0;
5845         Dwarf_Half attr;
5846         Dwarf_Signed attr_count, cnt;
5847         Dwarf_Unsigned bytecnt;
5848         Dwarf_Off off;
5849         int i, j, ret;
5850
5851         if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) !=
5852             DW_DLV_OK) {
5853                 if (ret == DW_DLV_ERROR)
5854                         warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de));
5855                 goto cont_search;
5856         }
5857
5858         for (i = 0; i < attr_count; i++) {
5859                 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) {
5860                         warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de));
5861                         continue;
5862                 }
5863                 if (attr != DW_AT_ranges)
5864                         continue;
5865                 if (dwarf_global_formref(attr_list[i], &off, &de) != DW_DLV_OK) {
5866                         warnx("dwarf_global_formref failed: %s",
5867                             dwarf_errmsg(de));
5868                         continue;
5869                 }
5870                 if (dwarf_get_ranges(re->dbg, off, &ranges, &cnt,
5871                     &bytecnt, &de) != DW_DLV_OK)
5872                         continue;
5873                 base0 = base;
5874                 for (j = 0; j < cnt; j++) {
5875                         printf("    %08jx ", (uintmax_t) off);
5876                         if (ranges[j].dwr_type == DW_RANGES_END) {
5877                                 printf("%s\n", "<End of list>");
5878                                 continue;
5879                         } else if (ranges[j].dwr_type ==
5880                             DW_RANGES_ADDRESS_SELECTION) {
5881                                 base0 = ranges[j].dwr_addr2;
5882                                 continue;
5883                         }
5884                         if (re->ec == ELFCLASS32)
5885                                 printf("%08jx %08jx\n",
5886                                     (uintmax_t) (ranges[j].dwr_addr1 + base0),
5887                                     (uintmax_t) (ranges[j].dwr_addr2 + base0));
5888                         else
5889                                 printf("%016jx %016jx\n",
5890                                     (uintmax_t) (ranges[j].dwr_addr1 + base0),
5891                                     (uintmax_t) (ranges[j].dwr_addr2 + base0));
5892                 }
5893         }
5894
5895 cont_search:
5896         /* Search children. */
5897         ret = dwarf_child(die, &ret_die, &de);
5898         if (ret == DW_DLV_ERROR)
5899                 warnx("dwarf_child: %s", dwarf_errmsg(de));
5900         else if (ret == DW_DLV_OK)
5901                 dump_dwarf_ranges_foreach(re, ret_die, base);
5902
5903         /* Search sibling. */
5904         ret = dwarf_siblingof(re->dbg, die, &ret_die, &de);
5905         if (ret == DW_DLV_ERROR)
5906                 warnx("dwarf_siblingof: %s", dwarf_errmsg(de));
5907         else if (ret == DW_DLV_OK)
5908                 dump_dwarf_ranges_foreach(re, ret_die, base);
5909
5910         dwarf_dealloc(re->dbg, die, DW_DLA_DIE);
5911 }
5912
5913 static void
5914 dump_dwarf_ranges(struct readelf *re)
5915 {
5916         Dwarf_Ranges *ranges;
5917         Dwarf_Die die;
5918         Dwarf_Signed cnt;
5919         Dwarf_Unsigned bytecnt;
5920         Dwarf_Half tag;
5921         Dwarf_Error de;
5922         Dwarf_Unsigned lowpc;
5923         int ret;
5924
5925         if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) !=
5926             DW_DLV_OK)
5927                 return;
5928
5929         printf("Contents of the .debug_ranges section:\n\n");
5930         if (re->ec == ELFCLASS32)
5931                 printf("    %-8s %-8s %s\n", "Offset", "Begin", "End");
5932         else
5933                 printf("    %-8s %-16s %s\n", "Offset", "Begin", "End");
5934
5935         while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL,
5936             NULL, &de)) == DW_DLV_OK) {
5937                 die = NULL;
5938                 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK)
5939                         continue;
5940                 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
5941                         warnx("dwarf_tag failed: %s", dwarf_errmsg(de));
5942                         continue;
5943                 }
5944                 /* XXX: What about DW_TAG_partial_unit? */
5945                 lowpc = 0;
5946                 if (tag == DW_TAG_compile_unit) {
5947                         if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc,
5948                             &de) != DW_DLV_OK)
5949                                 lowpc = 0;
5950                 }
5951
5952                 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc);
5953         }
5954         putchar('\n');
5955 }
5956
5957 static void
5958 dump_dwarf_macinfo(struct readelf *re)
5959 {
5960         Dwarf_Unsigned offset;
5961         Dwarf_Signed cnt;
5962         Dwarf_Macro_Details *md;
5963         Dwarf_Error de;
5964         const char *mi_str;
5965         char unk_mi[32];
5966         int i;
5967
5968 #define _MAX_MACINFO_ENTRY      65535
5969
5970         printf("\nContents of section .debug_macinfo:\n\n");
5971
5972         offset = 0;
5973         while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY,
5974             &cnt, &md, &de) == DW_DLV_OK) {
5975                 for (i = 0; i < cnt; i++) {
5976                         offset = md[i].dmd_offset + 1;
5977                         if (md[i].dmd_type == 0)
5978                                 break;
5979                         if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) !=
5980                             DW_DLV_OK) {
5981                                 snprintf(unk_mi, sizeof(unk_mi),
5982                                     "[Unknown MACINFO: %#x]", md[i].dmd_type);
5983                                 mi_str = unk_mi;
5984                         }
5985                         printf(" %s", mi_str);
5986                         switch (md[i].dmd_type) {
5987                         case DW_MACINFO_define:
5988                         case DW_MACINFO_undef:
5989                                 printf(" - lineno : %jd macro : %s\n",
5990                                     (intmax_t) md[i].dmd_lineno,
5991                                     md[i].dmd_macro);
5992                                 break;
5993                         case DW_MACINFO_start_file:
5994                                 printf(" - lineno : %jd filenum : %jd\n",
5995                                     (intmax_t) md[i].dmd_lineno,
5996                                     (intmax_t) md[i].dmd_fileindex);
5997                                 break;
5998                         default:
5999                                 putchar('\n');
6000                                 break;
6001                         }
6002                 }
6003         }
6004
6005 #undef  _MAX_MACINFO_ENTRY
6006 }
6007
6008 static void
6009 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts,
6010     Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc,
6011     Dwarf_Debug dbg)
6012 {
6013         Dwarf_Frame_Op *oplist;
6014         Dwarf_Signed opcnt, delta;
6015         Dwarf_Small op;
6016         Dwarf_Error de;
6017         const char *op_str;
6018         char unk_op[32];
6019         int i;
6020
6021         if (dwarf_expand_frame_instructions(cie, insts, len, &oplist,
6022             &opcnt, &de) != DW_DLV_OK) {
6023                 warnx("dwarf_expand_frame_instructions failed: %s",
6024                     dwarf_errmsg(de));
6025                 return;
6026         }
6027
6028         for (i = 0; i < opcnt; i++) {
6029                 if (oplist[i].fp_base_op != 0)
6030                         op = oplist[i].fp_base_op << 6;
6031                 else
6032                         op = oplist[i].fp_extended_op;
6033                 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) {
6034                         snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]",
6035                             op);
6036                         op_str = unk_op;
6037                 }
6038                 printf("  %s", op_str);
6039                 switch (op) {
6040                 case DW_CFA_advance_loc:
6041                         delta = oplist[i].fp_offset * caf;
6042                         pc += delta;
6043                         printf(": %ju to %08jx", (uintmax_t) delta,
6044                             (uintmax_t) pc);
6045                         break;
6046                 case DW_CFA_offset:
6047                 case DW_CFA_offset_extended:
6048                 case DW_CFA_offset_extended_sf:
6049                         delta = oplist[i].fp_offset * daf;
6050                         printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register,
6051                             dwarf_regname(re, oplist[i].fp_register),
6052                             (intmax_t) delta);
6053                         break;
6054                 case DW_CFA_restore:
6055                         printf(": r%u (%s)", oplist[i].fp_register,
6056                             dwarf_regname(re, oplist[i].fp_register));
6057                         break;
6058                 case DW_CFA_set_loc:
6059                         pc = oplist[i].fp_offset;
6060                         printf(": to %08jx", (uintmax_t) pc);
6061                         break;
6062                 case DW_CFA_advance_loc1:
6063                 case DW_CFA_advance_loc2:
6064                 case DW_CFA_advance_loc4:
6065                         pc += oplist[i].fp_offset;
6066                         printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset,
6067                             (uintmax_t) pc);
6068                         break;
6069                 case DW_CFA_def_cfa:
6070                         printf(": r%u (%s) ofs %ju", oplist[i].fp_register,
6071                             dwarf_regname(re, oplist[i].fp_register),
6072                             (uintmax_t) oplist[i].fp_offset);
6073                         break;
6074                 case DW_CFA_def_cfa_sf:
6075                         printf(": r%u (%s) ofs %jd", oplist[i].fp_register,
6076                             dwarf_regname(re, oplist[i].fp_register),
6077                             (intmax_t) (oplist[i].fp_offset * daf));
6078                         break;
6079                 case DW_CFA_def_cfa_register:
6080                         printf(": r%u (%s)", oplist[i].fp_register,
6081                             dwarf_regname(re, oplist[i].fp_register));
6082                         break;
6083                 case DW_CFA_def_cfa_offset:
6084                         printf(": %ju", (uintmax_t) oplist[i].fp_offset);
6085                         break;
6086                 case DW_CFA_def_cfa_offset_sf:
6087                         printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf));
6088                         break;
6089                 default:
6090                         break;
6091                 }
6092                 putchar('\n');
6093         }
6094
6095         dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK);
6096 }
6097
6098 static char *
6099 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off)
6100 {
6101         static char rs[16];
6102
6103         if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE)
6104                 snprintf(rs, sizeof(rs), "%c", 'u');
6105         else if (reg == DW_FRAME_CFA_COL)
6106                 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off);
6107         else
6108                 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg),
6109                     (intmax_t) off);
6110
6111         return (rs);
6112 }
6113
6114 static int
6115 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc,
6116     Dwarf_Unsigned func_len, Dwarf_Half cie_ra)
6117 {
6118         Dwarf_Regtable rt;
6119         Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc;
6120         Dwarf_Error de;
6121         char *vec;
6122         int i;
6123
6124 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7))
6125 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7)))
6126 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7)))
6127 #define RT(x) rt.rules[(x)]
6128
6129         vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1);
6130         if (vec == NULL)
6131                 err(EXIT_FAILURE, "calloc failed");
6132
6133         pre_pc = ~((Dwarf_Addr) 0);
6134         cur_pc = pc;
6135         end_pc = pc + func_len;
6136         for (; cur_pc < end_pc; cur_pc++) {
6137                 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc,
6138                     &de) != DW_DLV_OK) {
6139                         free(vec);
6140                         warnx("dwarf_get_fde_info_for_all_regs failed: %s\n",
6141                             dwarf_errmsg(de));
6142                         return (-1);
6143                 }
6144                 if (row_pc == pre_pc)
6145                         continue;
6146                 pre_pc = row_pc;
6147                 for (i = 1; i < DW_REG_TABLE_SIZE; i++) {
6148                         if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE)
6149                                 BIT_SET(vec, i);
6150                 }
6151         }
6152
6153         printf("   LOC   CFA      ");
6154         for (i = 1; i < DW_REG_TABLE_SIZE; i++) {
6155                 if (BIT_ISSET(vec, i)) {
6156                         if ((Dwarf_Half) i == cie_ra)
6157                                 printf("ra   ");
6158                         else
6159                                 printf("%-5s",
6160                                     dwarf_regname(re, (unsigned int) i));
6161                 }
6162         }
6163         putchar('\n');
6164
6165         pre_pc = ~((Dwarf_Addr) 0);
6166         cur_pc = pc;
6167         end_pc = pc + func_len;
6168         for (; cur_pc < end_pc; cur_pc++) {
6169                 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc,
6170                     &de) != DW_DLV_OK) {
6171                         free(vec);
6172                         warnx("dwarf_get_fde_info_for_all_regs failed: %s\n",
6173                             dwarf_errmsg(de));
6174                         return (-1);
6175                 }
6176                 if (row_pc == pre_pc)
6177                         continue;
6178                 pre_pc = row_pc;
6179                 printf("%08jx ", (uintmax_t) row_pc);
6180                 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum,
6181                     RT(0).dw_offset));
6182                 for (i = 1; i < DW_REG_TABLE_SIZE; i++) {
6183                         if (BIT_ISSET(vec, i)) {
6184                                 printf("%-5s", get_regoff_str(re,
6185                                     RT(i).dw_regnum, RT(i).dw_offset));
6186                         }
6187                 }
6188                 putchar('\n');
6189         }
6190
6191         free(vec);
6192
6193         return (0);
6194
6195 #undef  BIT_SET
6196 #undef  BIT_CLR
6197 #undef  BIT_ISSET
6198 #undef  RT
6199 }
6200
6201 static void
6202 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt)
6203 {
6204         Dwarf_Cie *cie_list, cie, pre_cie;
6205         Dwarf_Fde *fde_list, fde;
6206         Dwarf_Off cie_offset, fde_offset;
6207         Dwarf_Unsigned cie_length, fde_instlen;
6208         Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length;
6209         Dwarf_Signed cie_count, fde_count, cie_index;
6210         Dwarf_Addr low_pc;
6211         Dwarf_Half cie_ra;
6212         Dwarf_Small cie_version;
6213         Dwarf_Ptr fde_addr, fde_inst, cie_inst;
6214         char *cie_aug, c;
6215         int i, ret, eh_frame;
6216         Dwarf_Error de;
6217
6218         printf("\nThe section %s contains:\n\n", s->name);
6219
6220         if (!strcmp(s->name, ".debug_frame")) {
6221                 eh_frame = 0;
6222                 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count,
6223                     &fde_list, &fde_count, &de) != DW_DLV_OK) {
6224                         warnx("dwarf_get_fde_list failed: %s",
6225                             dwarf_errmsg(de));
6226                         return;
6227                 }
6228         } else if (!strcmp(s->name, ".eh_frame")) {
6229                 eh_frame = 1;
6230                 ret = dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count,
6231                     &fde_list, &fde_count, &de);
6232                 if (ret != DW_DLV_OK) {
6233                         if (ret == DW_DLV_ERROR) {
6234                                 warnx("dwarf_get_fde_list_eh failed: %s",
6235                                     dwarf_errmsg(de));
6236                         }
6237                         return;
6238                 }
6239         } else
6240                 return;
6241
6242         pre_cie = NULL;
6243         for (i = 0; i < fde_count; i++) {
6244                 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) {
6245                         warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de));
6246                         continue;
6247                 }
6248                 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) {
6249                         warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de));
6250                         continue;
6251                 }
6252                 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr,
6253                     &fde_length, &cie_offset, &cie_index, &fde_offset,
6254                     &de) != DW_DLV_OK) {
6255                         warnx("dwarf_get_fde_range failed: %s",
6256                             dwarf_errmsg(de));
6257                         continue;
6258                 }
6259                 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen,
6260                     &de) != DW_DLV_OK) {
6261                         warnx("dwarf_get_fde_instr_bytes failed: %s",
6262                             dwarf_errmsg(de));
6263                         continue;
6264                 }
6265                 if (pre_cie == NULL || cie != pre_cie) {
6266                         pre_cie = cie;
6267                         if (dwarf_get_cie_info(cie, &cie_length, &cie_version,
6268                             &cie_aug, &cie_caf, &cie_daf, &cie_ra,
6269                             &cie_inst, &cie_instlen, &de) != DW_DLV_OK) {
6270                                 warnx("dwarf_get_cie_info failed: %s",
6271                                     dwarf_errmsg(de));
6272                                 continue;
6273                         }
6274                         printf("%08jx %08jx %8.8jx CIE",
6275                             (uintmax_t) cie_offset,
6276                             (uintmax_t) cie_length,
6277                             (uintmax_t) (eh_frame ? 0 : ~0U));
6278                         if (!alt) {
6279                                 putchar('\n');
6280                                 printf("  Version:\t\t\t%u\n", cie_version);
6281                                 printf("  Augmentation:\t\t\t\"");
6282                                 while ((c = *cie_aug++) != '\0')
6283                                         putchar(c);
6284                                 printf("\"\n");
6285                                 printf("  Code alignment factor:\t%ju\n",
6286                                     (uintmax_t) cie_caf);
6287                                 printf("  Data alignment factor:\t%jd\n",
6288                                     (intmax_t) cie_daf);
6289                                 printf("  Return address column:\t%ju\n",
6290                                     (uintmax_t) cie_ra);
6291                                 putchar('\n');
6292                                 dump_dwarf_frame_inst(re, cie, cie_inst,
6293                                     cie_instlen, cie_caf, cie_daf, 0,
6294                                     re->dbg);
6295                                 putchar('\n');
6296                         } else {
6297                                 printf(" \"");
6298                                 while ((c = *cie_aug++) != '\0')
6299                                         putchar(c);
6300                                 putchar('"');
6301                                 printf(" cf=%ju df=%jd ra=%ju\n",
6302                                     (uintmax_t) cie_caf,
6303                                     (uintmax_t) cie_daf,
6304                                     (uintmax_t) cie_ra);
6305                                 dump_dwarf_frame_regtable(re, fde, low_pc, 1,
6306                                     cie_ra);
6307                                 putchar('\n');
6308                         }
6309                 }
6310                 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n",
6311                     (uintmax_t) fde_offset, (uintmax_t) fde_length,
6312                     (uintmax_t) cie_offset,
6313                     (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset :
6314                         cie_offset),
6315                     (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len));
6316                 if (!alt)
6317                         dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen,
6318                             cie_caf, cie_daf, low_pc, re->dbg);
6319                 else
6320                         dump_dwarf_frame_regtable(re, fde, low_pc, func_len,
6321                             cie_ra);
6322                 putchar('\n');
6323         }
6324 }
6325
6326 static void
6327 dump_dwarf_frame(struct readelf *re, int alt)
6328 {
6329         struct section *s;
6330         int i;
6331
6332         (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL);
6333
6334         for (i = 0; (size_t) i < re->shnum; i++) {
6335                 s = &re->sl[i];
6336                 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") ||
6337                     !strcmp(s->name, ".eh_frame")))
6338                         dump_dwarf_frame_section(re, s, alt);
6339         }
6340 }
6341
6342 static void
6343 dump_dwarf_str(struct readelf *re)
6344 {
6345         struct section *s;
6346         Elf_Data *d;
6347         unsigned char *p;
6348         int elferr, end, i, j;
6349
6350         printf("\nContents of section .debug_str:\n");
6351
6352         s = NULL;
6353         for (i = 0; (size_t) i < re->shnum; i++) {
6354                 s = &re->sl[i];
6355                 if (s->name != NULL && !strcmp(s->name, ".debug_str"))
6356                         break;
6357         }
6358         if ((size_t) i >= re->shnum)
6359                 return;
6360
6361         (void) elf_errno();
6362         if ((d = elf_getdata(s->scn, NULL)) == NULL) {
6363                 elferr = elf_errno();
6364                 if (elferr != 0)
6365                         warnx("elf_getdata failed: %s", elf_errmsg(-1));
6366                 return;
6367         }
6368         if (d->d_size <= 0)
6369                 return;
6370
6371         for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) {
6372                 printf("  0x%08x", (unsigned int) i);
6373                 if ((size_t) i + 16 > d->d_size)
6374                         end = d->d_size;
6375                 else
6376                         end = i + 16;
6377                 for (j = i; j < i + 16; j++) {
6378                         if ((j - i) % 4 == 0)
6379                                 putchar(' ');
6380                         if (j >= end) {
6381                                 printf("  ");
6382                                 continue;
6383                         }
6384                         printf("%02x", (uint8_t) p[j]);
6385                 }
6386                 putchar(' ');
6387                 for (j = i; j < end; j++) {
6388                         if (isprint(p[j]))
6389                                 putchar(p[j]);
6390                         else if (p[j] == 0)
6391                                 putchar('.');
6392                         else
6393                                 putchar(' ');
6394                 }
6395                 putchar('\n');
6396         }
6397 }
6398
6399 static int
6400 loc_at_comparator(const void *la1, const void *la2)
6401 {
6402         const struct loc_at *left, *right;
6403
6404         left = (const struct loc_at *)la1;
6405         right = (const struct loc_at *)la2;
6406
6407         if (left->la_off > right->la_off)
6408                 return (1);
6409         else if (left->la_off < right->la_off)
6410                 return (-1);
6411         else
6412                 return (0);
6413 }
6414
6415 static void
6416 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc,
6417     struct loc_at **la_list, size_t *la_list_len, size_t *la_list_cap)
6418 {
6419         struct loc_at *la;
6420         Dwarf_Attribute *attr_list;
6421         Dwarf_Die ret_die;
6422         Dwarf_Unsigned off;
6423         Dwarf_Off ref;
6424         Dwarf_Signed attr_count;
6425         Dwarf_Half attr, form;
6426         Dwarf_Bool is_info;
6427         Dwarf_Error de;
6428         int i, ret;
6429
6430         is_info = dwarf_get_die_infotypes_flag(die);
6431
6432         if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) !=
6433             DW_DLV_OK) {
6434                 if (ret == DW_DLV_ERROR)
6435                         warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de));
6436                 goto cont_search;
6437         }
6438         for (i = 0; i < attr_count; i++) {
6439                 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) {
6440                         warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de));
6441                         continue;
6442                 }
6443                 if (attr != DW_AT_location &&
6444                     attr != DW_AT_string_length &&
6445                     attr != DW_AT_return_addr &&
6446                     attr != DW_AT_data_member_location &&
6447                     attr != DW_AT_frame_base &&
6448                     attr != DW_AT_segment &&
6449                     attr != DW_AT_static_link &&
6450                     attr != DW_AT_use_location &&
6451                     attr != DW_AT_vtable_elem_location)
6452                         continue;
6453                 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) {
6454                         warnx("dwarf_whatform failed: %s", dwarf_errmsg(de));
6455                         continue;
6456                 }
6457                 if (form == DW_FORM_data4 || form == DW_FORM_data8) {
6458                         if (dwarf_formudata(attr_list[i], &off, &de) !=
6459                             DW_DLV_OK) {
6460                                 warnx("dwarf_formudata failed: %s",
6461                                     dwarf_errmsg(de));
6462                                 continue;
6463                         }
6464                 } else if (form == DW_FORM_sec_offset) {
6465                         if (dwarf_global_formref(attr_list[i], &ref, &de) !=
6466                             DW_DLV_OK) {
6467                                 warnx("dwarf_global_formref failed: %s",
6468                                     dwarf_errmsg(de));
6469                                 continue;
6470                         }
6471                         off = ref;
6472                 } else
6473                         continue;
6474
6475                 if (*la_list_cap == *la_list_len) {
6476                         *la_list = realloc(*la_list,
6477                             *la_list_cap * 2 * sizeof(**la_list));
6478                         if (*la_list == NULL)
6479                                 err(EXIT_FAILURE, "realloc failed");
6480                         *la_list_cap *= 2;
6481                 }
6482                 la = &((*la_list)[*la_list_len]);
6483                 la->la_at = attr_list[i];
6484                 la->la_off = off;
6485                 la->la_lowpc = lowpc;
6486                 la->la_cu_psize = re->cu_psize;
6487                 la->la_cu_osize = re->cu_osize;
6488                 la->la_cu_ver = re->cu_ver;
6489                 (*la_list_len)++;
6490         }
6491
6492 cont_search:
6493         /* Search children. */
6494         ret = dwarf_child(die, &ret_die, &de);
6495         if (ret == DW_DLV_ERROR)
6496                 warnx("dwarf_child: %s", dwarf_errmsg(de));
6497         else if (ret == DW_DLV_OK)
6498                 search_loclist_at(re, ret_die, lowpc, la_list,
6499                     la_list_len, la_list_cap);
6500
6501         /* Search sibling. */
6502         ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de);
6503         if (ret == DW_DLV_ERROR)
6504                 warnx("dwarf_siblingof: %s", dwarf_errmsg(de));
6505         else if (ret == DW_DLV_OK)
6506                 search_loclist_at(re, ret_die, lowpc, la_list,
6507                     la_list_len, la_list_cap);
6508 }
6509
6510 static void
6511 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr)
6512 {
6513         const char *op_str;
6514         char unk_op[32];
6515         uint8_t *b, n;
6516         int i;
6517
6518         if (dwarf_get_OP_name(lr->lr_atom, &op_str) !=
6519             DW_DLV_OK) {
6520                 snprintf(unk_op, sizeof(unk_op),
6521                     "[Unknown OP: %#x]", lr->lr_atom);
6522                 op_str = unk_op;
6523         }
6524
6525         printf("%s", op_str);
6526
6527         switch (lr->lr_atom) {
6528         case DW_OP_reg0:
6529         case DW_OP_reg1:
6530         case DW_OP_reg2:
6531         case DW_OP_reg3:
6532         case DW_OP_reg4:
6533         case DW_OP_reg5:
6534         case DW_OP_reg6:
6535         case DW_OP_reg7:
6536         case DW_OP_reg8:
6537         case DW_OP_reg9:
6538         case DW_OP_reg10:
6539         case DW_OP_reg11:
6540         case DW_OP_reg12:
6541         case DW_OP_reg13:
6542         case DW_OP_reg14:
6543         case DW_OP_reg15:
6544         case DW_OP_reg16:
6545         case DW_OP_reg17:
6546         case DW_OP_reg18:
6547         case DW_OP_reg19:
6548         case DW_OP_reg20:
6549         case DW_OP_reg21:
6550         case DW_OP_reg22:
6551         case DW_OP_reg23:
6552         case DW_OP_reg24:
6553         case DW_OP_reg25:
6554         case DW_OP_reg26:
6555         case DW_OP_reg27:
6556         case DW_OP_reg28:
6557         case DW_OP_reg29:
6558         case DW_OP_reg30:
6559         case DW_OP_reg31:
6560                 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0));
6561                 break;
6562
6563         case DW_OP_deref:
6564         case DW_OP_lit0:
6565         case DW_OP_lit1:
6566         case DW_OP_lit2:
6567         case DW_OP_lit3:
6568         case DW_OP_lit4:
6569         case DW_OP_lit5:
6570         case DW_OP_lit6:
6571         case DW_OP_lit7:
6572         case DW_OP_lit8:
6573         case DW_OP_lit9:
6574         case DW_OP_lit10:
6575         case DW_OP_lit11:
6576         case DW_OP_lit12:
6577         case DW_OP_lit13:
6578         case DW_OP_lit14:
6579         case DW_OP_lit15:
6580         case DW_OP_lit16:
6581         case DW_OP_lit17:
6582         case DW_OP_lit18:
6583         case DW_OP_lit19:
6584         case DW_OP_lit20:
6585         case DW_OP_lit21:
6586         case DW_OP_lit22:
6587         case DW_OP_lit23:
6588         case DW_OP_lit24:
6589         case DW_OP_lit25:
6590         case DW_OP_lit26:
6591         case DW_OP_lit27:
6592         case DW_OP_lit28:
6593         case DW_OP_lit29:
6594         case DW_OP_lit30:
6595         case DW_OP_lit31:
6596         case DW_OP_dup:
6597         case DW_OP_drop:
6598         case DW_OP_over:
6599         case DW_OP_swap:
6600         case DW_OP_rot:
6601         case DW_OP_xderef:
6602         case DW_OP_abs:
6603         case DW_OP_and:
6604         case DW_OP_div:
6605         case DW_OP_minus:
6606         case DW_OP_mod:
6607         case DW_OP_mul:
6608         case DW_OP_neg:
6609         case DW_OP_not:
6610         case DW_OP_or:
6611         case DW_OP_plus:
6612         case DW_OP_shl:
6613         case DW_OP_shr:
6614         case DW_OP_shra:
6615         case DW_OP_xor:
6616         case DW_OP_eq:
6617         case DW_OP_ge:
6618         case DW_OP_gt:
6619         case DW_OP_le:
6620         case DW_OP_lt:
6621         case DW_OP_ne:
6622         case DW_OP_nop:
6623         case DW_OP_push_object_address:
6624         case DW_OP_form_tls_address:
6625         case DW_OP_call_frame_cfa:
6626         case DW_OP_stack_value:
6627         case DW_OP_GNU_push_tls_address:
6628         case DW_OP_GNU_uninit:
6629                 break;
6630
6631         case DW_OP_const1u:
6632         case DW_OP_pick:
6633         case DW_OP_deref_size:
6634         case DW_OP_xderef_size:
6635         case DW_OP_const2u:
6636         case DW_OP_bra:
6637         case DW_OP_skip:
6638         case DW_OP_const4u:
6639         case DW_OP_const8u:
6640         case DW_OP_constu:
6641         case DW_OP_plus_uconst:
6642         case DW_OP_regx:
6643         case DW_OP_piece:
6644                 printf(": %ju", (uintmax_t)
6645                     lr->lr_number);
6646                 break;
6647
6648         case DW_OP_const1s:
6649         case DW_OP_const2s:
6650         case DW_OP_const4s:
6651         case DW_OP_const8s:
6652         case DW_OP_consts:
6653                 printf(": %jd", (intmax_t)
6654                     lr->lr_number);
6655                 break;
6656
6657         case DW_OP_breg0:
6658         case DW_OP_breg1:
6659         case DW_OP_breg2:
6660         case DW_OP_breg3:
6661         case DW_OP_breg4:
6662         case DW_OP_breg5:
6663         case DW_OP_breg6:
6664         case DW_OP_breg7:
6665         case DW_OP_breg8:
6666         case DW_OP_breg9:
6667         case DW_OP_breg10:
6668         case DW_OP_breg11:
6669         case DW_OP_breg12:
6670         case DW_OP_breg13:
6671         case DW_OP_breg14:
6672         case DW_OP_breg15:
6673         case DW_OP_breg16:
6674         case DW_OP_breg17:
6675         case DW_OP_breg18:
6676         case DW_OP_breg19:
6677         case DW_OP_breg20:
6678         case DW_OP_breg21:
6679         case DW_OP_breg22:
6680         case DW_OP_breg23:
6681         case DW_OP_breg24:
6682         case DW_OP_breg25:
6683         case DW_OP_breg26:
6684         case DW_OP_breg27:
6685         case DW_OP_breg28:
6686         case DW_OP_breg29:
6687         case DW_OP_breg30:
6688         case DW_OP_breg31:
6689                 printf(" (%s): %jd",
6690                     dwarf_regname(re, lr->lr_atom - DW_OP_breg0),
6691                     (intmax_t) lr->lr_number);
6692                 break;
6693
6694         case DW_OP_fbreg:
6695                 printf(": %jd", (intmax_t)
6696                     lr->lr_number);
6697                 break;
6698
6699         case DW_OP_bregx:
6700                 printf(": %ju (%s) %jd",
6701                     (uintmax_t) lr->lr_number,
6702                     dwarf_regname(re, (unsigned int) lr->lr_number),
6703                     (intmax_t) lr->lr_number2);
6704                 break;
6705
6706         case DW_OP_addr:
6707         case DW_OP_GNU_encoded_addr:
6708                 printf(": %#jx", (uintmax_t)
6709                     lr->lr_number);
6710                 break;
6711
6712         case DW_OP_GNU_implicit_pointer:
6713                 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number,
6714                     (intmax_t) lr->lr_number2);
6715                 break;
6716
6717         case DW_OP_implicit_value:
6718                 printf(": %ju byte block:", (uintmax_t) lr->lr_number);
6719                 b = (uint8_t *)(uintptr_t) lr->lr_number2;
6720                 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++)
6721                         printf(" %x", b[i]);
6722                 break;
6723
6724         case DW_OP_GNU_entry_value:
6725                 printf(": (");
6726                 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2,
6727                     lr->lr_number);
6728                 putchar(')');
6729                 break;
6730
6731         case DW_OP_GNU_const_type:
6732                 printf(": <0x%jx> ", (uintmax_t) lr->lr_number);
6733                 b = (uint8_t *)(uintptr_t) lr->lr_number2;
6734                 n = *b;
6735                 for (i = 1; (uint8_t) i < n; i++)
6736                         printf(" %x", b[i]);
6737                 break;
6738
6739         case DW_OP_GNU_regval_type:
6740                 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number,
6741                     dwarf_regname(re, (unsigned int) lr->lr_number),
6742                     (uintmax_t) lr->lr_number2);
6743                 break;
6744
6745         case DW_OP_GNU_convert:
6746         case DW_OP_GNU_deref_type:
6747         case DW_OP_GNU_parameter_ref:
6748         case DW_OP_GNU_reinterpret:
6749                 printf(": <0x%jx>", (uintmax_t) lr->lr_number);
6750                 break;
6751
6752         default:
6753                 break;
6754         }
6755 }
6756
6757 static void
6758 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len)
6759 {
6760         Dwarf_Locdesc *llbuf;
6761         Dwarf_Signed lcnt;
6762         Dwarf_Error de;
6763         int i;
6764
6765         if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize,
6766             re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) {
6767                 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de));
6768                 return;
6769         }
6770
6771         for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) {
6772                 dump_dwarf_loc(re, &llbuf->ld_s[i]);
6773                 if (i < llbuf->ld_cents - 1)
6774                         printf("; ");
6775         }
6776
6777         dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK);
6778         dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC);
6779 }
6780
6781 static void
6782 dump_dwarf_loclist(struct readelf *re)
6783 {
6784         Dwarf_Die die;
6785         Dwarf_Locdesc **llbuf;
6786         Dwarf_Unsigned lowpc;
6787         Dwarf_Signed lcnt;
6788         Dwarf_Half tag, version, pointer_size, off_size;
6789         Dwarf_Error de;
6790         struct loc_at *la_list, *left, *right, *la;
6791         size_t la_list_len, la_list_cap;
6792         unsigned int duplicates, k;
6793         int i, j, ret, has_content;
6794
6795         la_list_len = 0;
6796         la_list_cap = 200;
6797         if ((la_list = calloc(la_list_cap, sizeof(struct loc_at))) == NULL)
6798                 errx(EXIT_FAILURE, "calloc failed");
6799         /* Search .debug_info section. */
6800         while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL,
6801             &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) {
6802                 set_cu_context(re, pointer_size, off_size, version);
6803                 die = NULL;
6804                 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK)
6805                         continue;
6806                 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
6807                         warnx("dwarf_tag failed: %s", dwarf_errmsg(de));
6808                         continue;
6809                 }
6810                 /* XXX: What about DW_TAG_partial_unit? */
6811                 lowpc = 0;
6812                 if (tag == DW_TAG_compile_unit) {
6813                         if (dwarf_attrval_unsigned(die, DW_AT_low_pc,
6814                             &lowpc, &de) != DW_DLV_OK)
6815                                 lowpc = 0;
6816                 }
6817
6818                 /* Search attributes for reference to .debug_loc section. */
6819                 search_loclist_at(re, die, lowpc, &la_list,
6820                     &la_list_len, &la_list_cap);
6821         }
6822         if (ret == DW_DLV_ERROR)
6823                 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
6824
6825         /* Search .debug_types section. */
6826         do {
6827                 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL,
6828                     &version, NULL, &pointer_size, &off_size, NULL, NULL,
6829                     NULL, NULL, &de)) == DW_DLV_OK) {
6830                         set_cu_context(re, pointer_size, off_size, version);
6831                         die = NULL;
6832                         if (dwarf_siblingof(re->dbg, die, &die, &de) !=
6833                             DW_DLV_OK)
6834                                 continue;
6835                         if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
6836                                 warnx("dwarf_tag failed: %s",
6837                                     dwarf_errmsg(de));
6838                                 continue;
6839                         }
6840
6841                         lowpc = 0;
6842                         if (tag == DW_TAG_type_unit) {
6843                                 if (dwarf_attrval_unsigned(die, DW_AT_low_pc,
6844                                     &lowpc, &de) != DW_DLV_OK)
6845                                         lowpc = 0;
6846                         }
6847
6848                         /*
6849                          * Search attributes for reference to .debug_loc
6850                          * section.
6851                          */
6852                         search_loclist_at(re, die, lowpc, &la_list,
6853                             &la_list_len, &la_list_cap);
6854                 }
6855                 if (ret == DW_DLV_ERROR)
6856                         warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
6857         } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK);
6858
6859         if (la_list_len == 0) {
6860                 free(la_list);
6861                 return;
6862         }
6863
6864         /* Sort la_list using loc_at_comparator. */
6865         qsort(la_list, la_list_len, sizeof(struct loc_at), loc_at_comparator);
6866
6867         /* Get rid of the duplicates in la_list. */
6868         duplicates = 0;
6869         for (k = 1; k < la_list_len; ++k) {
6870                 left = &la_list[k - 1 - duplicates];
6871                 right = &la_list[k];
6872
6873                 if (left->la_off == right->la_off)
6874                         duplicates++;
6875                 else
6876                         la_list[k - duplicates] = *right;
6877         }
6878         la_list_len -= duplicates;
6879
6880         has_content = 0;
6881         for (k = 0; k < la_list_len; ++k) {
6882                 la = &la_list[k];
6883                 if ((ret = dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de)) !=
6884                     DW_DLV_OK) {
6885                         if (ret != DW_DLV_NO_ENTRY)
6886                                 warnx("dwarf_loclist_n failed: %s",
6887                                     dwarf_errmsg(de));
6888                         continue;
6889                 }
6890                 if (!has_content) {
6891                         has_content = 1;
6892                         printf("\nContents of section .debug_loc:\n");
6893                         printf("    Offset   Begin    End      Expression\n");
6894                 }
6895                 set_cu_context(re, la->la_cu_psize, la->la_cu_osize,
6896                     la->la_cu_ver);
6897                 for (i = 0; i < lcnt; i++) {
6898                         printf("    %8.8jx ", (uintmax_t) la->la_off);
6899                         if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) {
6900                                 printf("<End of list>\n");
6901                                 continue;
6902                         }
6903
6904                         /* TODO: handle base selection entry. */
6905
6906                         printf("%8.8jx %8.8jx ",
6907                             (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc),
6908                             (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc));
6909
6910                         putchar('(');
6911                         for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) {
6912                                 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]);
6913                                 if (j < llbuf[i]->ld_cents - 1)
6914                                         printf("; ");
6915                         }
6916                         putchar(')');
6917
6918                         if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc)
6919                                 printf(" (start == end)");
6920                         putchar('\n');
6921                 }
6922                 for (i = 0; i < lcnt; i++) {
6923                         dwarf_dealloc(re->dbg, llbuf[i]->ld_s,
6924                             DW_DLA_LOC_BLOCK);
6925                         dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC);
6926                 }
6927                 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST);
6928         }
6929
6930         if (!has_content)
6931                 printf("\nSection '.debug_loc' has no debugging data.\n");
6932
6933         free(la_list);
6934 }
6935
6936 /*
6937  * Retrieve a string using string table section index and the string offset.
6938  */
6939 static const char*
6940 get_string(struct readelf *re, int strtab, size_t off)
6941 {
6942         const char *name;
6943
6944         if ((name = elf_strptr(re->elf, strtab, off)) == NULL)
6945                 return ("");
6946
6947         return (name);
6948 }
6949
6950 /*
6951  * Retrieve the name of a symbol using the section index of the symbol
6952  * table and the index of the symbol within that table.
6953  */
6954 static const char *
6955 get_symbol_name(struct readelf *re, int symtab, int i)
6956 {
6957         struct section  *s;
6958         const char      *name;
6959         GElf_Sym         sym;
6960         Elf_Data        *data;
6961         int              elferr;
6962
6963         s = &re->sl[symtab];
6964         if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM)
6965                 return ("");
6966         (void) elf_errno();
6967         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
6968                 elferr = elf_errno();
6969                 if (elferr != 0)
6970                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
6971                 return ("");
6972         }
6973         if (gelf_getsym(data, i, &sym) != &sym)
6974                 return ("");
6975         /* Return section name for STT_SECTION symbol. */
6976         if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) {
6977                 if (sym.st_shndx < re->shnum &&
6978                     re->sl[sym.st_shndx].name != NULL)
6979                         return (re->sl[sym.st_shndx].name);
6980                 return ("");
6981         }
6982         if (s->link >= re->shnum ||
6983             (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL)
6984                 return ("");
6985
6986         return (name);
6987 }
6988
6989 static uint64_t
6990 get_symbol_value(struct readelf *re, int symtab, int i)
6991 {
6992         struct section  *s;
6993         GElf_Sym         sym;
6994         Elf_Data        *data;
6995         int              elferr;
6996
6997         s = &re->sl[symtab];
6998         if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM)
6999                 return (0);
7000         (void) elf_errno();
7001         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
7002                 elferr = elf_errno();
7003                 if (elferr != 0)
7004                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
7005                 return (0);
7006         }
7007         if (gelf_getsym(data, i, &sym) != &sym)
7008                 return (0);
7009
7010         return (sym.st_value);
7011 }
7012
7013 /*
7014  * Decompress a data section if needed (using ZLIB).
7015  * Returns true if sucessful, false otherwise.
7016  */
7017 static bool decompress_section(struct section *s,
7018     unsigned char *compressed_data_buffer, size_t compressed_size,
7019     unsigned char **ret_buf, size_t *ret_sz)
7020 {
7021         GElf_Shdr sh;
7022
7023         if (gelf_getshdr(s->scn, &sh) == NULL)
7024                 errx(EXIT_FAILURE, "gelf_getshdr() failed: %s", elf_errmsg(-1));
7025
7026         if (sh.sh_flags & SHF_COMPRESSED) {
7027                 int ret;
7028                 GElf_Chdr chdr;
7029                 Elf64_Xword inflated_size;
7030                 unsigned char *uncompressed_data_buffer = NULL;
7031                 Elf64_Xword uncompressed_size;
7032                 z_stream strm;
7033
7034                 if (gelf_getchdr(s->scn, &chdr) == NULL)
7035                         errx(EXIT_FAILURE, "gelf_getchdr() failed: %s", elf_errmsg(-1));
7036                 if (chdr.ch_type != ELFCOMPRESS_ZLIB) {
7037                         warnx("unknown compression type: %d", chdr.ch_type);
7038                         return (false);
7039                 }
7040
7041                 inflated_size = 0;
7042                 uncompressed_size = chdr.ch_size;
7043                 uncompressed_data_buffer = malloc(uncompressed_size);
7044                 compressed_data_buffer += sizeof(chdr);
7045                 compressed_size -= sizeof(chdr);
7046
7047                 strm.zalloc = Z_NULL;
7048                 strm.zfree = Z_NULL;
7049                 strm.opaque = Z_NULL;
7050                 strm.avail_in = compressed_size;
7051                 strm.avail_out = uncompressed_size;
7052                 ret = inflateInit(&strm);
7053
7054                 if (ret != Z_OK)
7055                         goto fail;
7056                 /*
7057                  * The section can contain several compressed buffers,
7058                  * so decompress in a loop until all data is inflated.
7059                  */
7060                 while (inflated_size < compressed_size) {
7061                         strm.next_in = compressed_data_buffer + inflated_size;
7062                         strm.next_out = uncompressed_data_buffer + inflated_size;
7063                         ret = inflate(&strm, Z_FINISH);
7064                         if (ret != Z_STREAM_END)
7065                                 goto fail;
7066                         inflated_size = uncompressed_size - strm.avail_out;
7067                         ret = inflateReset(&strm);
7068                         if (ret != Z_OK)
7069                                 goto fail;
7070                 }
7071                 if (strm.avail_out != 0)
7072                         warnx("Warning: wrong info in compression header.");
7073                 ret = inflateEnd(&strm);
7074                 if (ret != Z_OK)
7075                         goto fail;
7076                 *ret_buf = uncompressed_data_buffer;
7077                 *ret_sz = uncompressed_size;
7078                 return (true);
7079 fail:
7080                 inflateEnd(&strm);
7081                 if (strm.msg)
7082                         warnx("%s", strm.msg);
7083                 else
7084                         warnx("ZLIB error: %d", ret);
7085                 free(uncompressed_data_buffer);
7086                 return (false);
7087         }
7088         return (false);
7089 }
7090
7091 static void
7092 hex_dump(struct readelf *re)
7093 {
7094         struct section *s;
7095         Elf_Data *d;
7096         uint8_t *buf, *new_buf;
7097         size_t sz, nbytes;
7098         uint64_t addr;
7099         int elferr, i, j;
7100
7101         for (i = 1; (size_t) i < re->shnum; i++) {
7102                 new_buf = NULL;
7103                 s = &re->sl[i];
7104                 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL)
7105                         continue;
7106                 (void) elf_errno();
7107                 if ((d = elf_getdata(s->scn, NULL)) == NULL &&
7108                     (d = elf_rawdata(s->scn, NULL)) == NULL) {
7109                         elferr = elf_errno();
7110                         if (elferr != 0)
7111                                 warnx("elf_getdata failed: %s",
7112                                     elf_errmsg(elferr));
7113                         continue;
7114                 }
7115                 (void) elf_errno();
7116                 if (d->d_size <= 0 || d->d_buf == NULL) {
7117                         printf("\nSection '%s' has no data to dump.\n",
7118                             s->name);
7119                         continue;
7120                 }
7121                 buf = d->d_buf;
7122                 sz = d->d_size;
7123                 addr = s->addr;
7124                 if (re->options & RE_Z) {
7125                         if (decompress_section(s, d->d_buf, d->d_size,
7126                             &new_buf, &sz))
7127                                 buf = new_buf;
7128                 }
7129                 printf("\nHex dump of section '%s':\n", s->name);
7130                 while (sz > 0) {
7131                         printf("  0x%8.8jx ", (uintmax_t)addr);
7132                         nbytes = sz > 16? 16 : sz;
7133                         for (j = 0; j < 16; j++) {
7134                                 if ((size_t)j < nbytes)
7135                                         printf("%2.2x", buf[j]);
7136                                 else
7137                                         printf("  ");
7138                                 if ((j & 3) == 3)
7139                                         printf(" ");
7140                         }
7141                         for (j = 0; (size_t)j < nbytes; j++) {
7142                                 if (isprint(buf[j]))
7143                                         printf("%c", buf[j]);
7144                                 else
7145                                         printf(".");
7146                         }
7147                         printf("\n");
7148                         buf += nbytes;
7149                         addr += nbytes;
7150                         sz -= nbytes;
7151                 }
7152                 free(new_buf);
7153         }
7154 }
7155
7156 static void
7157 str_dump(struct readelf *re)
7158 {
7159         struct section *s;
7160         Elf_Data *d;
7161         unsigned char *start, *end, *buf_end, *new_buf;
7162         unsigned int len;
7163         size_t sz;
7164         int i, j, elferr, found;
7165
7166         for (i = 1; (size_t) i < re->shnum; i++) {
7167                 new_buf = NULL;
7168                 s = &re->sl[i];
7169                 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL)
7170                         continue;
7171                 (void) elf_errno();
7172                 if ((d = elf_getdata(s->scn, NULL)) == NULL &&
7173                     (d = elf_rawdata(s->scn, NULL)) == NULL) {
7174                         elferr = elf_errno();
7175                         if (elferr != 0)
7176                                 warnx("elf_getdata failed: %s",
7177                                     elf_errmsg(elferr));
7178                         continue;
7179                 }
7180                 (void) elf_errno();
7181                 if (d->d_size <= 0 || d->d_buf == NULL) {
7182                         printf("\nSection '%s' has no data to dump.\n",
7183                             s->name);
7184                         continue;
7185                 }
7186                 found = 0;
7187                 start = d->d_buf;
7188                 sz = d->d_size;
7189                 if (re->options & RE_Z) {
7190                         if (decompress_section(s, d->d_buf, d->d_size,
7191                             &new_buf, &sz))
7192                                 start = new_buf;
7193                 }
7194                 buf_end = start + sz;
7195                 printf("\nString dump of section '%s':\n", s->name);
7196                 for (;;) {
7197                         while (start < buf_end && !isprint(*start))
7198                                 start++;
7199                         if (start >= buf_end)
7200                                 break;
7201                         end = start + 1;
7202                         while (end < buf_end && isprint(*end))
7203                                 end++;
7204                         printf("  [%6lx]  ",
7205                             (long) (start - (unsigned char *) d->d_buf));
7206                         len = end - start;
7207                         for (j = 0; (unsigned int) j < len; j++)
7208                                 putchar(start[j]);
7209                         putchar('\n');
7210                         found = 1;
7211                         if (end >= buf_end)
7212                                 break;
7213                         start = end + 1;
7214                 }
7215                 free(new_buf);
7216                 if (!found)
7217                         printf("  No strings found in this section.");
7218                 putchar('\n');
7219         }
7220 }
7221
7222 static void
7223 load_sections(struct readelf *re)
7224 {
7225         struct section  *s;
7226         const char      *name;
7227         Elf_Scn         *scn;
7228         GElf_Shdr        sh;
7229         size_t           shstrndx, ndx;
7230         int              elferr;
7231
7232         /* Allocate storage for internal section list. */
7233         if (!elf_getshnum(re->elf, &re->shnum)) {
7234                 warnx("elf_getshnum failed: %s", elf_errmsg(-1));
7235                 return;
7236         }
7237         if (re->sl != NULL)
7238                 free(re->sl);
7239         if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL)
7240                 err(EXIT_FAILURE, "calloc failed");
7241
7242         /* Get the index of .shstrtab section. */
7243         if (!elf_getshstrndx(re->elf, &shstrndx)) {
7244                 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1));
7245                 return;
7246         }
7247
7248         if ((scn = elf_getscn(re->elf, 0)) == NULL)
7249                 return;
7250
7251         (void) elf_errno();
7252         do {
7253                 if (gelf_getshdr(scn, &sh) == NULL) {
7254                         warnx("gelf_getshdr failed: %s", elf_errmsg(-1));
7255                         (void) elf_errno();
7256                         continue;
7257                 }
7258                 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) {
7259                         (void) elf_errno();
7260                         name = "<no-name>";
7261                 }
7262                 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) {
7263                         if ((elferr = elf_errno()) != 0) {
7264                                 warnx("elf_ndxscn failed: %s",
7265                                     elf_errmsg(elferr));
7266                                 continue;
7267                         }
7268                 }
7269                 if (ndx >= re->shnum) {
7270                         warnx("section index of '%s' out of range", name);
7271                         continue;
7272                 }
7273                 if (sh.sh_link >= re->shnum)
7274                         warnx("section link %llu of '%s' out of range",
7275                             (unsigned long long)sh.sh_link, name);
7276                 s = &re->sl[ndx];
7277                 s->name = name;
7278                 s->scn = scn;
7279                 s->off = sh.sh_offset;
7280                 s->sz = sh.sh_size;
7281                 s->entsize = sh.sh_entsize;
7282                 s->align = sh.sh_addralign;
7283                 s->type = sh.sh_type;
7284                 s->flags = sh.sh_flags;
7285                 s->addr = sh.sh_addr;
7286                 s->link = sh.sh_link;
7287                 s->info = sh.sh_info;
7288         } while ((scn = elf_nextscn(re->elf, scn)) != NULL);
7289         elferr = elf_errno();
7290         if (elferr != 0)
7291                 warnx("elf_nextscn failed: %s", elf_errmsg(elferr));
7292 }
7293
7294 static void
7295 unload_sections(struct readelf *re)
7296 {
7297
7298         if (re->sl != NULL) {
7299                 free(re->sl);
7300                 re->sl = NULL;
7301         }
7302         re->shnum = 0;
7303         re->vd_s = NULL;
7304         re->vn_s = NULL;
7305         re->vs_s = NULL;
7306         re->vs = NULL;
7307         re->vs_sz = 0;
7308         if (re->ver != NULL) {
7309                 free(re->ver);
7310                 re->ver = NULL;
7311                 re->ver_sz = 0;
7312         }
7313 }
7314
7315 static bool
7316 dump_elf(struct readelf *re)
7317 {
7318
7319         /* Fetch ELF header. No need to continue if it fails. */
7320         if (gelf_getehdr(re->elf, &re->ehdr) == NULL) {
7321                 warnx("gelf_getehdr failed: %s", elf_errmsg(-1));
7322                 return (false);
7323         }
7324         if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) {
7325                 warnx("gelf_getclass failed: %s", elf_errmsg(-1));
7326                 return (false);
7327         }
7328         if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) {
7329                 re->dw_read = _read_msb;
7330                 re->dw_decode = _decode_msb;
7331         } else {
7332                 re->dw_read = _read_lsb;
7333                 re->dw_decode = _decode_lsb;
7334         }
7335
7336         if (re->options & ~RE_H)
7337                 load_sections(re);
7338         if ((re->options & RE_VV) || (re->options & RE_S))
7339                 search_ver(re);
7340         if (re->options & RE_H)
7341                 dump_ehdr(re);
7342         if (re->options & RE_L)
7343                 dump_phdr(re);
7344         if (re->options & RE_SS)
7345                 dump_shdr(re);
7346         if (re->options & RE_G)
7347                 dump_section_groups(re);
7348         if (re->options & RE_D)
7349                 dump_dynamic(re);
7350         if (re->options & RE_R)
7351                 dump_reloc(re);
7352         if (re->options & RE_S)
7353                 dump_symtabs(re);
7354         if (re->options & RE_N)
7355                 dump_notes(re);
7356         if (re->options & RE_II)
7357                 dump_hash(re);
7358         if (re->options & RE_X)
7359                 hex_dump(re);
7360         if (re->options & RE_P)
7361                 str_dump(re);
7362         if (re->options & RE_VV)
7363                 dump_ver(re);
7364         if (re->options & RE_AA)
7365                 dump_arch_specific_info(re);
7366         if (re->options & RE_W)
7367                 dump_dwarf(re);
7368         if (re->options & ~RE_H)
7369                 unload_sections(re);
7370         return (true);
7371 }
7372
7373 static void
7374 dump_dwarf(struct readelf *re)
7375 {
7376         Dwarf_Error de;
7377         int error;
7378
7379         if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) {
7380                 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL)
7381                         errx(EXIT_FAILURE, "dwarf_elf_init failed: %s",
7382                             dwarf_errmsg(de));
7383                 return;
7384         }
7385
7386         if (re->dop & DW_A)
7387                 dump_dwarf_abbrev(re);
7388         if (re->dop & DW_L)
7389                 dump_dwarf_line(re);
7390         if (re->dop & DW_LL)
7391                 dump_dwarf_line_decoded(re);
7392         if (re->dop & DW_I) {
7393                 dump_dwarf_info(re, 0);
7394                 dump_dwarf_info(re, 1);
7395         }
7396         if (re->dop & DW_P)
7397                 dump_dwarf_pubnames(re);
7398         if (re->dop & DW_R)
7399                 dump_dwarf_aranges(re);
7400         if (re->dop & DW_RR)
7401                 dump_dwarf_ranges(re);
7402         if (re->dop & DW_M)
7403                 dump_dwarf_macinfo(re);
7404         if (re->dop & DW_F)
7405                 dump_dwarf_frame(re, 0);
7406         else if (re->dop & DW_FF)
7407                 dump_dwarf_frame(re, 1);
7408         if (re->dop & DW_S)
7409                 dump_dwarf_str(re);
7410         if (re->dop & DW_O)
7411                 dump_dwarf_loclist(re);
7412
7413         dwarf_finish(re->dbg, &de);
7414 }
7415
7416 static bool
7417 dump_ar(struct readelf *re, int fd)
7418 {
7419         Elf_Arsym *arsym;
7420         Elf_Arhdr *arhdr;
7421         Elf_Cmd cmd;
7422         Elf *e;
7423         size_t sz;
7424         off_t off;
7425         int i;
7426
7427         re->ar = re->elf;
7428
7429         if (re->options & RE_C) {
7430                 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) {
7431                         warnx("elf_getarsym() failed: %s", elf_errmsg(-1));
7432                         goto process_members;
7433                 }
7434                 printf("Index of archive %s: (%ju entries)\n", re->filename,
7435                     (uintmax_t) sz - 1);
7436                 off = 0;
7437                 for (i = 0; (size_t) i < sz; i++) {
7438                         if (arsym[i].as_name == NULL)
7439                                 break;
7440                         if (arsym[i].as_off != off) {
7441                                 off = arsym[i].as_off;
7442                                 if (elf_rand(re->ar, off) != off) {
7443                                         warnx("elf_rand() failed: %s",
7444                                             elf_errmsg(-1));
7445                                         continue;
7446                                 }
7447                                 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) ==
7448                                     NULL) {
7449                                         warnx("elf_begin() failed: %s",
7450                                             elf_errmsg(-1));
7451                                         continue;
7452                                 }
7453                                 if ((arhdr = elf_getarhdr(e)) == NULL) {
7454                                         warnx("elf_getarhdr() failed: %s",
7455                                             elf_errmsg(-1));
7456                                         elf_end(e);
7457                                         continue;
7458                                 }
7459                                 printf("Binary %s(%s) contains:\n",
7460                                     re->filename, arhdr->ar_name);
7461                                 elf_end(e);
7462                         }
7463                         printf("\t%s\n", arsym[i].as_name);
7464                 }
7465                 if (elf_rand(re->ar, SARMAG) != SARMAG) {
7466                         warnx("elf_rand() failed: %s", elf_errmsg(-1));
7467                         return (false);
7468                 }
7469         }
7470
7471 process_members:
7472
7473         if ((re->options & ~RE_C) == 0)
7474                 return (true);
7475
7476         cmd = ELF_C_READ;
7477         while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) {
7478                 if ((arhdr = elf_getarhdr(re->elf)) == NULL) {
7479                         warnx("elf_getarhdr() failed: %s", elf_errmsg(-1));
7480                         goto next_member;
7481                 }
7482                 if (strcmp(arhdr->ar_name, "/") == 0 ||
7483                     strcmp(arhdr->ar_name, "//") == 0 ||
7484                     strcmp(arhdr->ar_name, "__.SYMDEF") == 0)
7485                         goto next_member;
7486                 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name);
7487                 dump_elf(re);
7488
7489         next_member:
7490                 cmd = elf_next(re->elf);
7491                 elf_end(re->elf);
7492         }
7493         re->elf = re->ar;
7494         return (true);
7495 }
7496
7497 static bool
7498 dump_object(struct readelf *re, int fd)
7499 {
7500         bool rv = false;
7501
7502         if ((re->flags & DISPLAY_FILENAME) != 0)
7503                 printf("\nFile: %s\n", re->filename);
7504
7505         if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
7506                 warnx("elf_begin() failed: %s", elf_errmsg(-1));
7507                 goto done;
7508         }
7509
7510         switch (elf_kind(re->elf)) {
7511         case ELF_K_NONE:
7512                 warnx("Not an ELF file.");
7513                 goto done;
7514         case ELF_K_ELF:
7515                 rv = dump_elf(re);
7516                 break;
7517         case ELF_K_AR:
7518                 rv = dump_ar(re, fd);
7519                 break;
7520         default:
7521                 warnx("Internal: libelf returned unknown elf kind.");
7522         }
7523
7524 done:
7525         elf_end(re->elf);
7526         return (rv);
7527 }
7528
7529 static void
7530 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t)
7531 {
7532         struct dumpop *d;
7533
7534         if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) {
7535                 if ((d = calloc(1, sizeof(*d))) == NULL)
7536                         err(EXIT_FAILURE, "calloc failed");
7537                 if (t == DUMP_BY_INDEX)
7538                         d->u.si = si;
7539                 else
7540                         d->u.sn = sn;
7541                 d->type = t;
7542                 d->op = op;
7543                 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list);
7544         } else
7545                 d->op |= op;
7546 }
7547
7548 static struct dumpop *
7549 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t)
7550 {
7551         struct dumpop *d;
7552
7553         STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) {
7554                 if ((op == -1 || op & d->op) &&
7555                     (t == -1 || (unsigned) t == d->type)) {
7556                         if ((d->type == DUMP_BY_INDEX && d->u.si == si) ||
7557                             (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn)))
7558                                 return (d);
7559                 }
7560         }
7561
7562         return (NULL);
7563 }
7564
7565 static struct {
7566         const char *ln;
7567         char sn;
7568         int value;
7569 } dwarf_op[] = {
7570         {"rawline", 'l', DW_L},
7571         {"decodedline", 'L', DW_LL},
7572         {"info", 'i', DW_I},
7573         {"abbrev", 'a', DW_A},
7574         {"pubnames", 'p', DW_P},
7575         {"aranges", 'r', DW_R},
7576         {"ranges", 'r', DW_R},
7577         {"Ranges", 'R', DW_RR},
7578         {"macro", 'm', DW_M},
7579         {"frames", 'f', DW_F},
7580         {"frames-interp", 'F', DW_FF},
7581         {"str", 's', DW_S},
7582         {"loc", 'o', DW_O},
7583         {NULL, 0, 0}
7584 };
7585
7586 static void
7587 parse_dwarf_op_short(struct readelf *re, const char *op)
7588 {
7589         int i;
7590
7591         if (op == NULL) {
7592                 re->dop |= DW_DEFAULT_OPTIONS;
7593                 return;
7594         }
7595
7596         for (; *op != '\0'; op++) {
7597                 for (i = 0; dwarf_op[i].ln != NULL; i++) {
7598                         if (dwarf_op[i].sn == *op) {
7599                                 re->dop |= dwarf_op[i].value;
7600                                 break;
7601                         }
7602                 }
7603         }
7604 }
7605
7606 static void
7607 parse_dwarf_op_long(struct readelf *re, const char *op)
7608 {
7609         char *p, *token, *bp;
7610         int i;
7611
7612         if (op == NULL) {
7613                 re->dop |= DW_DEFAULT_OPTIONS;
7614                 return;
7615         }
7616
7617         if ((p = strdup(op)) == NULL)
7618                 err(EXIT_FAILURE, "strdup failed");
7619         bp = p;
7620
7621         while ((token = strsep(&p, ",")) != NULL) {
7622                 for (i = 0; dwarf_op[i].ln != NULL; i++) {
7623                         if (!strcmp(token, dwarf_op[i].ln)) {
7624                                 re->dop |= dwarf_op[i].value;
7625                                 break;
7626                         }
7627                 }
7628         }
7629
7630         free(bp);
7631 }
7632
7633 static uint64_t
7634 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read)
7635 {
7636         uint64_t ret;
7637         uint8_t *src;
7638
7639         src = (uint8_t *) d->d_buf + *offsetp;
7640
7641         ret = 0;
7642         switch (bytes_to_read) {
7643         case 8:
7644                 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40;
7645                 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56;
7646                 /* FALLTHROUGH */
7647         case 4:
7648                 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24;
7649                 /* FALLTHROUGH */
7650         case 2:
7651                 ret |= ((uint64_t) src[1]) << 8;
7652                 /* FALLTHROUGH */
7653         case 1:
7654                 ret |= src[0];
7655                 break;
7656         default:
7657                 return (0);
7658         }
7659
7660         *offsetp += bytes_to_read;
7661
7662         return (ret);
7663 }
7664
7665 static uint64_t
7666 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read)
7667 {
7668         uint64_t ret;
7669         uint8_t *src;
7670
7671         src = (uint8_t *) d->d_buf + *offsetp;
7672
7673         switch (bytes_to_read) {
7674         case 1:
7675                 ret = src[0];
7676                 break;
7677         case 2:
7678                 ret = src[1] | ((uint64_t) src[0]) << 8;
7679                 break;
7680         case 4:
7681                 ret = src[3] | ((uint64_t) src[2]) << 8;
7682                 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24;
7683                 break;
7684         case 8:
7685                 ret = src[7] | ((uint64_t) src[6]) << 8;
7686                 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24;
7687                 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40;
7688                 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56;
7689                 break;
7690         default:
7691                 return (0);
7692         }
7693
7694         *offsetp += bytes_to_read;
7695
7696         return (ret);
7697 }
7698
7699 static uint64_t
7700 _decode_lsb(uint8_t **data, int bytes_to_read)
7701 {
7702         uint64_t ret;
7703         uint8_t *src;
7704
7705         src = *data;
7706
7707         ret = 0;
7708         switch (bytes_to_read) {
7709         case 8:
7710                 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40;
7711                 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56;
7712                 /* FALLTHROUGH */
7713         case 4:
7714                 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24;
7715                 /* FALLTHROUGH */
7716         case 2:
7717                 ret |= ((uint64_t) src[1]) << 8;
7718                 /* FALLTHROUGH */
7719         case 1:
7720                 ret |= src[0];
7721                 break;
7722         default:
7723                 return (0);
7724         }
7725
7726         *data += bytes_to_read;
7727
7728         return (ret);
7729 }
7730
7731 static uint64_t
7732 _decode_msb(uint8_t **data, int bytes_to_read)
7733 {
7734         uint64_t ret;
7735         uint8_t *src;
7736
7737         src = *data;
7738
7739         ret = 0;
7740         switch (bytes_to_read) {
7741         case 1:
7742                 ret = src[0];
7743                 break;
7744         case 2:
7745                 ret = src[1] | ((uint64_t) src[0]) << 8;
7746                 break;
7747         case 4:
7748                 ret = src[3] | ((uint64_t) src[2]) << 8;
7749                 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24;
7750                 break;
7751         case 8:
7752                 ret = src[7] | ((uint64_t) src[6]) << 8;
7753                 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24;
7754                 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40;
7755                 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56;
7756                 break;
7757         default:
7758                 return (0);
7759                 break;
7760         }
7761
7762         *data += bytes_to_read;
7763
7764         return (ret);
7765 }
7766
7767 static int64_t
7768 _decode_sleb128(uint8_t **dp, uint8_t *dpe)
7769 {
7770         int64_t ret = 0;
7771         uint8_t b = 0;
7772         int shift = 0;
7773
7774         uint8_t *src = *dp;
7775
7776         do {
7777                 if (src >= dpe)
7778                         break;
7779                 b = *src++;
7780                 ret |= ((b & 0x7f) << shift);
7781                 shift += 7;
7782         } while ((b & 0x80) != 0);
7783
7784         if (shift < 32 && (b & 0x40) != 0)
7785                 ret |= (-1 << shift);
7786
7787         *dp = src;
7788
7789         return (ret);
7790 }
7791
7792 static uint64_t
7793 _decode_uleb128(uint8_t **dp, uint8_t *dpe)
7794 {
7795         uint64_t ret = 0;
7796         uint8_t b;
7797         int shift = 0;
7798
7799         uint8_t *src = *dp;
7800
7801         do {
7802                 if (src >= dpe)
7803                         break;
7804                 b = *src++;
7805                 ret |= ((b & 0x7f) << shift);
7806                 shift += 7;
7807         } while ((b & 0x80) != 0);
7808
7809         *dp = src;
7810
7811         return (ret);
7812 }
7813
7814 static void
7815 readelf_version(void)
7816 {
7817         (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(),
7818             elftc_version());
7819         exit(EXIT_SUCCESS);
7820 }
7821
7822 #define USAGE_MESSAGE   "\
7823 Usage: %s [options] file...\n\
7824   Display information about ELF objects and ar(1) archives.\n\n\
7825   Options:\n\
7826   -a | --all               Equivalent to specifying options '-dhIlrsASV'.\n\
7827   -c | --archive-index     Print the archive symbol table for archives.\n\
7828   -d | --dynamic           Print the contents of SHT_DYNAMIC sections.\n\
7829   -e | --headers           Print all headers in the object.\n\
7830   -g | --section-groups    Print the contents of the section groups.\n\
7831   -h | --file-header       Print the file header for the object.\n\
7832   -l | --program-headers   Print the PHDR table for the object.\n\
7833   -n | --notes             Print the contents of SHT_NOTE sections.\n\
7834   -p INDEX | --string-dump=INDEX\n\
7835                            Print the contents of section at index INDEX.\n\
7836   -r | --relocs            Print relocation information.\n\
7837   -s | --syms | --symbols  Print symbol tables.\n\
7838   -t | --section-details   Print additional information about sections.\n\
7839   -v | --version           Print a version identifier and exit.\n\
7840   -w[afilmoprsFLR] | --debug-dump={abbrev,aranges,decodedline,frames,\n\
7841                                frames-interp,info,loc,macro,pubnames,\n\
7842                                ranges,Ranges,rawline,str}\n\
7843                            Display DWARF information.\n\
7844   -x INDEX | --hex-dump=INDEX\n\
7845                            Display contents of a section as hexadecimal.\n\
7846   -z | --decompress        Decompress the contents of a section before displaying it.\n\
7847   -A | --arch-specific     (accepted, but ignored)\n\
7848   -D | --use-dynamic       Print the symbol table specified by the DT_SYMTAB\n\
7849                            entry in the \".dynamic\" section.\n\
7850   -H | --help              Print a help message.\n\
7851   -I | --histogram         Print information on bucket list lengths for \n\
7852                            hash sections.\n\
7853   -N | --full-section-name (accepted, but ignored)\n\
7854   -S | --sections | --section-headers\n\
7855                            Print information about section headers.\n\
7856   -V | --version-info      Print symbol versoning information.\n\
7857   -W | --wide              Print information without wrapping long lines.\n"
7858
7859
7860 static void
7861 readelf_usage(int status)
7862 {
7863         fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME());
7864         exit(status);
7865 }
7866
7867 int
7868 main(int argc, char **argv)
7869 {
7870         cap_rights_t    rights;
7871         fileargs_t      *fa;
7872         struct readelf  *re, re_storage;
7873         unsigned long    si;
7874         int              fd, opt, i, exit_code;
7875         char            *ep;
7876
7877         re = &re_storage;
7878         memset(re, 0, sizeof(*re));
7879         STAILQ_INIT(&re->v_dumpop);
7880
7881         while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:z",
7882             longopts, NULL)) != -1) {
7883                 switch(opt) {
7884                 case '?':
7885                         readelf_usage(EXIT_SUCCESS);
7886                         break;
7887                 case 'A':
7888                         re->options |= RE_AA;
7889                         break;
7890                 case 'a':
7891                         re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II |
7892                             RE_L | RE_N | RE_R | RE_SS | RE_S | RE_U | RE_VV;
7893                         break;
7894                 case 'c':
7895                         re->options |= RE_C;
7896                         break;
7897                 case 'D':
7898                         re->options |= RE_DD;
7899                         break;
7900                 case 'd':
7901                         re->options |= RE_D;
7902                         break;
7903                 case 'e':
7904                         re->options |= RE_H | RE_L | RE_SS;
7905                         break;
7906                 case 'g':
7907                         re->options |= RE_G;
7908                         break;
7909                 case 'H':
7910                         readelf_usage(EXIT_SUCCESS);
7911                         break;
7912                 case 'h':
7913                         re->options |= RE_H;
7914                         break;
7915                 case 'I':
7916                         re->options |= RE_II;
7917                         break;
7918                 case 'i':
7919                         /* Not implemented yet. */
7920                         break;
7921                 case 'l':
7922                         re->options |= RE_L;
7923                         break;
7924                 case 'N':
7925                         re->options |= RE_NN;
7926                         break;
7927                 case 'n':
7928                         re->options |= RE_N;
7929                         break;
7930                 case 'p':
7931                         re->options |= RE_P;
7932                         si = strtoul(optarg, &ep, 10);
7933                         if (*ep == '\0')
7934                                 add_dumpop(re, (size_t) si, NULL, STR_DUMP,
7935                                     DUMP_BY_INDEX);
7936                         else
7937                                 add_dumpop(re, 0, optarg, STR_DUMP,
7938                                     DUMP_BY_NAME);
7939                         break;
7940                 case 'r':
7941                         re->options |= RE_R;
7942                         break;
7943                 case 'S':
7944                         re->options |= RE_SS;
7945                         break;
7946                 case 's':
7947                         re->options |= RE_S;
7948                         break;
7949                 case 't':
7950                         re->options |= RE_SS | RE_T;
7951                         break;
7952                 case 'u':
7953                         re->options |= RE_U;
7954                         break;
7955                 case 'V':
7956                         re->options |= RE_VV;
7957                         break;
7958                 case 'v':
7959                         readelf_version();
7960                         break;
7961                 case 'W':
7962                         re->options |= RE_WW;
7963                         break;
7964                 case 'w':
7965                         re->options |= RE_W;
7966                         parse_dwarf_op_short(re, optarg);
7967                         break;
7968                 case 'x':
7969                         re->options |= RE_X;
7970                         si = strtoul(optarg, &ep, 10);
7971                         if (*ep == '\0')
7972                                 add_dumpop(re, (size_t) si, NULL, HEX_DUMP,
7973                                     DUMP_BY_INDEX);
7974                         else
7975                                 add_dumpop(re, 0, optarg, HEX_DUMP,
7976                                     DUMP_BY_NAME);
7977                         break;
7978                 case 'z':
7979                         re->options |= RE_Z;
7980                         break;
7981                 case OPTION_DEBUG_DUMP:
7982                         re->options |= RE_W;
7983                         parse_dwarf_op_long(re, optarg);
7984                 }
7985         }
7986
7987         argv += optind;
7988         argc -= optind;
7989
7990         if (argc == 0 || re->options == 0)
7991                 readelf_usage(EXIT_FAILURE);
7992
7993         if (argc > 1)
7994                 re->flags |= DISPLAY_FILENAME;
7995
7996         if (elf_version(EV_CURRENT) == EV_NONE)
7997                 errx(EXIT_FAILURE, "ELF library initialization failed: %s",
7998                     elf_errmsg(-1));
7999
8000         cap_rights_init(&rights, CAP_FCNTL, CAP_FSTAT, CAP_MMAP_R, CAP_SEEK);
8001         fa = fileargs_init(argc, argv, O_RDONLY, 0, &rights, FA_OPEN);
8002         if (fa == NULL)
8003                 err(1, "Unable to initialize casper fileargs");
8004
8005         caph_cache_catpages();
8006         if (caph_limit_stdio() < 0) {
8007                 fileargs_free(fa);
8008                 err(1, "Unable to limit stdio rights");
8009         }
8010         if (caph_enter_casper() < 0) {
8011                 fileargs_free(fa);
8012                 err(1, "Unable to enter capability mode");
8013         }
8014
8015         exit_code = EXIT_SUCCESS;
8016         for (i = 0; i < argc; i++) {
8017                 re->filename = argv[i];
8018                 fd = fileargs_open(fa, re->filename);
8019                 if (fd < 0) {
8020                         warn("open %s failed", re->filename);
8021                         exit_code = EXIT_FAILURE;
8022                 } else {
8023                         if (!dump_object(re, fd))
8024                                 exit_code = EXIT_FAILURE;
8025                         close(fd);
8026                 }
8027         }
8028
8029         exit(exit_code);
8030 }