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