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