contrib/elftoolchain/elfdump/elfdump.c

   1 /*-
   2  * Copyright (c) 2007-2012 Kai Wang
   3  * Copyright (c) 2003 David O'Brien.  All rights reserved.
   4  * Copyright (c) 2001 Jake Burkholder
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/queue.h>
  31 #include <sys/stat.h>
  32
  33 #include <ar.h>
  34 #include <assert.h>
  35 #include <err.h>
  36 #include <fcntl.h>
  37 #include <gelf.h>
  38 #include <getopt.h>
  39 #include <libelftc.h>
  40 #include <inttypes.h>
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <unistd.h>
  45
  46 #ifdef USE_LIBARCHIVE_AR
  47 #include <archive.h>
  48 #include <archive_entry.h>
  49 #endif
  50
  51 #include "_elftc.h"
  52
  53 ELFTC_VCSID("$Id: elfdump.c 3474 2016-05-17 20:44:53Z emaste $");
  54
  55 #if defined(ELFTC_NEED_ELF_NOTE_DEFINITION)
  56 #include "native-elf-format.h"
  57 #if ELFTC_CLASS == ELFCLASS32
  58 typedef Elf32_Nhdr      Elf_Note;
  59 #else
  60 typedef Elf64_Nhdr      Elf_Note;
  61 #endif
  62 #endif
  63
  64 /* elfdump(1) options. */
  65 #define ED_DYN          (1<<0)
  66 #define ED_EHDR         (1<<1)
  67 #define ED_GOT          (1<<2)
  68 #define ED_HASH         (1<<3)
  69 #define ED_INTERP       (1<<4)
  70 #define ED_NOTE         (1<<5)
  71 #define ED_PHDR         (1<<6)
  72 #define ED_REL          (1<<7)
  73 #define ED_SHDR         (1<<8)
  74 #define ED_SYMTAB       (1<<9)
  75 #define ED_SYMVER       (1<<10)
  76 #define ED_CHECKSUM     (1<<11)
  77 #define ED_ALL          ((1<<12)-1)
  78
  79 /* elfdump(1) run control flags. */
  80 #define SOLARIS_FMT             (1<<0)
  81 #define PRINT_FILENAME          (1<<1)
  82 #define PRINT_ARSYM             (1<<2)
  83 #define ONLY_ARSYM              (1<<3)
  84
  85 /* Convenient print macro. */
  86 #define PRT(...)        fprintf(ed->out, __VA_ARGS__)
  87
  88 /* Internal data structure for sections. */
  89 struct section {
  90         const char      *name;          /* section name */
  91         Elf_Scn         *scn;           /* section scn */
  92         uint64_t         off;           /* section offset */
  93         uint64_t         sz;            /* section size */
  94         uint64_t         entsize;       /* section entsize */
  95         uint64_t         align;         /* section alignment */
  96         uint64_t         type;          /* section type */
  97         uint64_t         flags;         /* section flags */
  98         uint64_t         addr;          /* section virtual addr */
  99         uint32_t         link;          /* section link ndx */
 100         uint32_t         info;          /* section info ndx */
 101 };
 102
 103 struct spec_name {
 104         const char      *name;
 105         STAILQ_ENTRY(spec_name) sn_list;
 106 };
 107
 108 /* Structure encapsulates the global data for readelf(1). */
 109 struct elfdump {
 110         FILE            *out;           /* output redirection. */
 111         const char      *filename;      /* current processing file. */
 112         const char      *archive;       /* archive name */
 113         int              options;       /* command line options. */
 114         int              flags;         /* run control flags. */
 115         Elf             *elf;           /* underlying ELF descriptor. */
 116 #ifndef USE_LIBARCHIVE_AR
 117         Elf             *ar;            /* ar(1) archive descriptor. */
 118 #endif
 119         GElf_Ehdr        ehdr;          /* ELF header. */
 120         int              ec;            /* ELF class. */
 121         size_t           shnum;         /* #sections. */
 122         struct section  *sl;            /* list of sections. */
 123         STAILQ_HEAD(, spec_name) snl;   /* list of names specified by -N. */
 124 };
 125
 126 /* Relocation entry. */
 127 struct rel_entry {
 128         union {
 129                 GElf_Rel rel;
 130                 GElf_Rela rela;
 131         } u_r;
 132         const char *symn;
 133         uint32_t type;
 134 };
 135
 136 #if defined(ELFTC_NEED_BYTEORDER_EXTENSIONS)
 137 static __inline uint32_t
 138 be32dec(const void *pp)
 139 {
 140         unsigned char const *p = (unsigned char const *)pp;
 141
 142         return ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);
 143 }
 144
 145 static __inline uint32_t
 146 le32dec(const void *pp)
 147 {
 148         unsigned char const *p = (unsigned char const *)pp;
 149
 150         return ((p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]);
 151 }
 152 #endif
 153
 154 /* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#tag_encodings */
 155 static const char *
 156 d_tags(uint64_t tag)
 157 {
 158         static char unknown_buf[64];
 159
 160         switch (tag) {
 161         case DT_NULL:           return "DT_NULL";
 162         case DT_NEEDED:         return "DT_NEEDED";
 163         case DT_PLTRELSZ:       return "DT_PLTRELSZ";
 164         case DT_PLTGOT:         return "DT_PLTGOT";
 165         case DT_HASH:           return "DT_HASH";
 166         case DT_STRTAB:         return "DT_STRTAB";
 167         case DT_SYMTAB:         return "DT_SYMTAB";
 168         case DT_RELA:           return "DT_RELA";
 169         case DT_RELASZ:         return "DT_RELASZ";
 170         case DT_RELAENT:        return "DT_RELAENT";
 171         case DT_STRSZ:          return "DT_STRSZ";
 172         case DT_SYMENT:         return "DT_SYMENT";
 173         case DT_INIT:           return "DT_INIT";
 174         case DT_FINI:           return "DT_FINI";
 175         case DT_SONAME:         return "DT_SONAME";
 176         case DT_RPATH:          return "DT_RPATH";
 177         case DT_SYMBOLIC:       return "DT_SYMBOLIC";
 178         case DT_REL:            return "DT_REL";
 179         case DT_RELSZ:          return "DT_RELSZ";
 180         case DT_RELENT:         return "DT_RELENT";
 181         case DT_PLTREL:         return "DT_PLTREL";
 182         case DT_DEBUG:          return "DT_DEBUG";
 183         case DT_TEXTREL:        return "DT_TEXTREL";
 184         case DT_JMPREL:         return "DT_JMPREL";
 185         case DT_BIND_NOW:       return "DT_BIND_NOW";
 186         case DT_INIT_ARRAY:     return "DT_INIT_ARRAY";
 187         case DT_FINI_ARRAY:     return "DT_FINI_ARRAY";
 188         case DT_INIT_ARRAYSZ:   return "DT_INIT_ARRAYSZ";
 189         case DT_FINI_ARRAYSZ:   return "DT_FINI_ARRAYSZ";
 190         case DT_RUNPATH:        return "DT_RUNPATH";
 191         case DT_FLAGS:          return "DT_FLAGS";
 192         case DT_PREINIT_ARRAY:  return "DT_PREINIT_ARRAY"; /* XXX DT_ENCODING */
 193         case DT_PREINIT_ARRAYSZ:return "DT_PREINIT_ARRAYSZ";
 194         /* 0x6000000D - 0x6ffff000 operating system-specific semantics */
 195         case 0x6ffffdf5:        return "DT_GNU_PRELINKED";
 196         case 0x6ffffdf6:        return "DT_GNU_CONFLICTSZ";
 197         case 0x6ffffdf7:        return "DT_GNU_LIBLISTSZ";
 198         case 0x6ffffdf8:        return "DT_SUNW_CHECKSUM";
 199         case DT_PLTPADSZ:       return "DT_PLTPADSZ";
 200         case DT_MOVEENT:        return "DT_MOVEENT";
 201         case DT_MOVESZ:         return "DT_MOVESZ";
 202         case 0x6ffffdfc:        return "DT_FEATURE";
 203         case DT_POSFLAG_1:      return "DT_POSFLAG_1";
 204         case DT_SYMINSZ:        return "DT_SYMINSZ";
 205         case DT_SYMINENT:       return "DT_SYMINENT (DT_VALRNGHI)";
 206         case DT_ADDRRNGLO:      return "DT_ADDRRNGLO";
 207         case DT_GNU_HASH:       return "DT_GNU_HASH";
 208         case 0x6ffffef8:        return "DT_GNU_CONFLICT";
 209         case 0x6ffffef9:        return "DT_GNU_LIBLIST";
 210         case 0x6ffffefa:        return "DT_CONFIG";
 211         case 0x6ffffefb:        return "DT_DEPAUDIT";
 212         case 0x6ffffefc:        return "DT_AUDIT";
 213         case 0x6ffffefd:        return "DT_PLTPAD";
 214         case 0x6ffffefe:        return "DT_MOVETAB";
 215         case DT_SYMINFO:        return "DT_SYMINFO (DT_ADDRRNGHI)";
 216         case DT_RELACOUNT:      return "DT_RELACOUNT";
 217         case DT_RELCOUNT:       return "DT_RELCOUNT";
 218         case DT_FLAGS_1:        return "DT_FLAGS_1";
 219         case DT_VERDEF:         return "DT_VERDEF";
 220         case DT_VERDEFNUM:      return "DT_VERDEFNUM";
 221         case DT_VERNEED:        return "DT_VERNEED";
 222         case DT_VERNEEDNUM:     return "DT_VERNEEDNUM";
 223         case 0x6ffffff0:        return "DT_GNU_VERSYM";
 224         /* 0x70000000 - 0x7fffffff processor-specific semantics */
 225         case 0x70000000:        return "DT_IA_64_PLT_RESERVE";
 226         case 0x7ffffffd:        return "DT_SUNW_AUXILIARY";
 227         case 0x7ffffffe:        return "DT_SUNW_USED";
 228         case 0x7fffffff:        return "DT_SUNW_FILTER";
 229         }
 230
 231         snprintf(unknown_buf, sizeof(unknown_buf),
 232                 "<unknown: %#llx>", (unsigned long long)tag);
 233         return (unknown_buf);
 234 }
 235
 236 static const char *
 237 e_machines(unsigned int mach)
 238 {
 239         static char machdesc[64];
 240
 241         switch (mach) {
 242         case EM_NONE:   return "EM_NONE";
 243         case EM_M32:    return "EM_M32";
 244         case EM_SPARC:  return "EM_SPARC";
 245         case EM_386:    return "EM_386";
 246         case EM_68K:    return "EM_68K";
 247         case EM_88K:    return "EM_88K";
 248         case EM_IAMCU:  return "EM_IAMCU";
 249         case EM_860:    return "EM_860";
 250         case EM_MIPS:   return "EM_MIPS";
 251         case EM_PPC:    return "EM_PPC";
 252         case EM_PPC64:  return "EM_PPC64";
 253         case EM_ARM:    return "EM_ARM";
 254         case EM_ALPHA:  return "EM_ALPHA (legacy)";
 255         case EM_SPARCV9:return "EM_SPARCV9";
 256         case EM_IA_64:  return "EM_IA_64";
 257         case EM_X86_64: return "EM_X86_64";
 258         case EM_AARCH64:return "EM_AARCH64";
 259         case EM_RISCV:  return "EM_RISCV";
 260         }
 261         snprintf(machdesc, sizeof(machdesc),
 262             "(unknown machine) -- type 0x%x", mach);
 263         return (machdesc);
 264 }
 265
 266 static const char *
 267 elf_type_str(unsigned int type)
 268 {
 269         static char s_type[32];
 270
 271         switch (type)
 272         {
 273         case ET_NONE:   return "ET_NONE";
 274         case ET_REL:    return "ET_REL";
 275         case ET_EXEC:   return "ET_EXEC";
 276         case ET_DYN:    return "ET_DYN";
 277         case ET_CORE:   return "ET_CORE";
 278         }
 279         if (type >= ET_LOPROC)
 280                 snprintf(s_type, sizeof(s_type), "<proc: %#x>", type);
 281         else if (type >= ET_LOOS && type <= ET_HIOS)
 282                 snprintf(s_type, sizeof(s_type), "<os: %#x>", type);
 283         else
 284                 snprintf(s_type, sizeof(s_type), "<unknown: %#x", type);
 285         return (s_type);
 286 }
 287
 288 static const char *
 289 elf_version_str(unsigned int ver)
 290 {
 291         static char s_ver[32];
 292
 293         switch (ver) {
 294         case EV_NONE:           return "EV_NONE";
 295         case EV_CURRENT:        return "EV_CURRENT";
 296         }
 297         snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>", ver);
 298         return (s_ver);
 299 }
 300
 301 static const char *
 302 elf_class_str(unsigned int class)
 303 {
 304         static char s_class[32];
 305
 306         switch (class) {
 307         case ELFCLASSNONE:      return "ELFCLASSNONE";
 308         case ELFCLASS32:        return "ELFCLASS32";
 309         case ELFCLASS64:        return "ELFCLASS64";
 310         }
 311         snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class);
 312         return (s_class);
 313 }
 314
 315 static const char *
 316 elf_data_str(unsigned int data)
 317 {
 318         static char s_data[32];
 319
 320         switch (data) {
 321         case ELFDATANONE:       return "ELFDATANONE";
 322         case ELFDATA2LSB:       return "ELFDATA2LSB";
 323         case ELFDATA2MSB:       return "ELFDATA2MSB";
 324         }
 325         snprintf(s_data, sizeof(s_data), "<unknown: %#x>", data);
 326         return (s_data);
 327 }
 328
 329 static const char *ei_abis[256] = {
 330         "ELFOSABI_NONE", "ELFOSABI_HPUX", "ELFOSABI_NETBSD", "ELFOSABI_LINUX",
 331         "ELFOSABI_HURD", "ELFOSABI_86OPEN", "ELFOSABI_SOLARIS", "ELFOSABI_AIX",
 332         "ELFOSABI_IRIX", "ELFOSABI_FREEBSD", "ELFOSABI_TRU64",
 333         "ELFOSABI_MODESTO", "ELFOSABI_OPENBSD",
 334         [17] = "ELFOSABI_CLOUDABI",
 335         [255] = "ELFOSABI_STANDALONE"
 336 };
 337
 338 static const char *
 339 elf_phdr_type_str(unsigned int type)
 340 {
 341         static char s_type[32];
 342
 343         switch (type) {
 344         case PT_NULL:           return "PT_NULL";
 345         case PT_LOAD:           return "PT_LOAD";
 346         case PT_DYNAMIC:        return "PT_DYNAMIC";
 347         case PT_INTERP:         return "PT_INTERP";
 348         case PT_NOTE:           return "PT_NOTE";
 349         case PT_SHLIB:          return "PT_SHLIB";
 350         case PT_PHDR:           return "PT_PHDR";
 351         case PT_TLS:            return "PT_TLS";
 352         case PT_GNU_EH_FRAME:   return "PT_GNU_EH_FRAME";
 353         case PT_GNU_STACK:      return "PT_GNU_STACK";
 354         case PT_GNU_RELRO:      return "PT_GNU_RELRO";
 355         }
 356         snprintf(s_type, sizeof(s_type), "<unknown: %#x>", type);
 357         return (s_type);
 358 }
 359
 360 static const char *p_flags[] = {
 361         "", "PF_X", "PF_W", "PF_X|PF_W", "PF_R", "PF_X|PF_R", "PF_W|PF_R",
 362         "PF_X|PF_W|PF_R"
 363 };
 364
 365 static const char *
 366 sh_name(struct elfdump *ed, int ndx)
 367 {
 368         static char num[10];
 369
 370         switch (ndx) {
 371         case SHN_UNDEF: return "UNDEF";
 372         case SHN_ABS: return "ABS";
 373         case SHN_COMMON: return "COMMON";
 374         default:
 375                 if ((uint64_t)ndx < ed->shnum)
 376                         return (ed->sl[ndx].name);
 377                 else {
 378                         snprintf(num, sizeof(num), "%d", ndx);
 379                         return (num);
 380                 }
 381         }
 382 }
 383
 384 /* http://www.sco.com/developers/gabi/latest/ch4.sheader.html#sh_type */
 385 static const char *
 386 sh_types(uint64_t mach, uint64_t sht) {
 387         static char unknown_buf[64];
 388
 389         if (sht < 0x60000000) {
 390                 switch (sht) {
 391                 case SHT_NULL:          return "SHT_NULL";
 392                 case SHT_PROGBITS:      return "SHT_PROGBITS";
 393                 case SHT_SYMTAB:        return "SHT_SYMTAB";
 394                 case SHT_STRTAB:        return "SHT_STRTAB";
 395                 case SHT_RELA:          return "SHT_RELA";
 396                 case SHT_HASH:          return "SHT_HASH";
 397                 case SHT_DYNAMIC:       return "SHT_DYNAMIC";
 398                 case SHT_NOTE:          return "SHT_NOTE";
 399                 case SHT_NOBITS:        return "SHT_NOBITS";
 400                 case SHT_REL:           return "SHT_REL";
 401                 case SHT_SHLIB:         return "SHT_SHLIB";
 402                 case SHT_DYNSYM:        return "SHT_DYNSYM";
 403                 case SHT_INIT_ARRAY:    return "SHT_INIT_ARRAY";
 404                 case SHT_FINI_ARRAY:    return "SHT_FINI_ARRAY";
 405                 case SHT_PREINIT_ARRAY: return "SHT_PREINIT_ARRAY";
 406                 case SHT_GROUP:         return "SHT_GROUP";
 407                 case SHT_SYMTAB_SHNDX:  return "SHT_SYMTAB_SHNDX";
 408                 }
 409         } else if (sht < 0x70000000) {
 410                 /* 0x60000000-0x6fffffff operating system-specific semantics */
 411                 switch (sht) {
 412                 case 0x6ffffff0:        return "XXX:VERSYM";
 413                 case SHT_SUNW_dof:      return "SHT_SUNW_dof";
 414                 case SHT_GNU_HASH:      return "SHT_GNU_HASH";
 415                 case 0x6ffffff7:        return "SHT_GNU_LIBLIST";
 416                 case 0x6ffffffc:        return "XXX:VERDEF";
 417                 case SHT_SUNW_verdef:   return "SHT_SUNW(GNU)_verdef";
 418                 case SHT_SUNW_verneed:  return "SHT_SUNW(GNU)_verneed";
 419                 case SHT_SUNW_versym:   return "SHT_SUNW(GNU)_versym";
 420                 }
 421         } else if (sht < 0x80000000) {
 422                 /* 0x70000000 - 0x7fffffff processor-specific semantics */
 423                 switch (mach) {
 424                 case EM_ARM:
 425                         switch (sht) {
 426                         case SHT_ARM_EXIDX: return "SHT_ARM_EXIDX";
 427                         case SHT_ARM_PREEMPTMAP: return "SHT_ARM_PREEMPTMAP";
 428                         case SHT_ARM_ATTRIBUTES: return "SHT_ARM_ATTRIBUTES";
 429                         case SHT_ARM_DEBUGOVERLAY:
 430                             return "SHT_ARM_DEBUGOVERLAY";
 431                         case SHT_ARM_OVERLAYSECTION:
 432                             return "SHT_ARM_OVERLAYSECTION";
 433                         }
 434                         break;
 435                 case EM_IA_64:
 436                         switch (sht) {
 437                         case 0x70000000: return "SHT_IA_64_EXT";
 438                         case 0x70000001: return "SHT_IA_64_UNWIND";
 439                         }
 440                         break;
 441                 case EM_MIPS:
 442                         switch (sht) {
 443                         case SHT_MIPS_REGINFO: return "SHT_MIPS_REGINFO";
 444                         case SHT_MIPS_OPTIONS: return "SHT_MIPS_OPTIONS";
 445                         case SHT_MIPS_ABIFLAGS: return "SHT_MIPS_ABIFLAGS";
 446                         }
 447                         break;
 448                 }
 449                 switch (sht) {
 450                 case 0x7ffffffd: return "XXX:AUXILIARY";
 451                 case 0x7fffffff: return "XXX:FILTER";
 452                 }
 453         }
 454         /* 0x80000000 - 0xffffffff application programs */
 455
 456         snprintf(unknown_buf, sizeof(unknown_buf),
 457                 "<unknown: %#llx>", (unsigned long long)sht);
 458         return (unknown_buf);
 459 }
 460
 461 /*
 462  * Define known section flags. These flags are defined in the order
 463  * they are to be printed out.
 464  */
 465 #define DEFINE_SHFLAGS()                        \
 466         DEFINE_SHF(WRITE)                       \
 467         DEFINE_SHF(ALLOC)                       \
 468         DEFINE_SHF(EXECINSTR)                   \
 469         DEFINE_SHF(MERGE)                       \
 470         DEFINE_SHF(STRINGS)                     \
 471         DEFINE_SHF(INFO_LINK)                   \
 472         DEFINE_SHF(LINK_ORDER)                  \
 473         DEFINE_SHF(OS_NONCONFORMING)            \
 474         DEFINE_SHF(GROUP)                       \
 475         DEFINE_SHF(TLS)                         \
 476         DEFINE_SHF(COMPRESSED)
 477
 478 #undef  DEFINE_SHF
 479 #define DEFINE_SHF(F) "SHF_" #F "|"
 480 #define ALLSHFLAGS      DEFINE_SHFLAGS()
 481
 482 static const char *
 483 sh_flags(uint64_t shf)
 484 {
 485         static char     flg[sizeof(ALLSHFLAGS)+1];
 486
 487         flg[0] = '\0';
 488
 489 #undef  DEFINE_SHF
 490 #define DEFINE_SHF(N)                           \
 491         if (shf & SHF_##N)                      \
 492                 strcat(flg, "SHF_" #N "|");     \
 493
 494         DEFINE_SHFLAGS()
 495
 496         flg[strlen(flg) - 1] = '\0'; /* Remove the trailing "|". */
 497
 498         return (flg);
 499 }
 500
 501 static const char *
 502 st_type(unsigned int mach, unsigned int type)
 503 {
 504         static char s_type[32];
 505
 506         switch (type) {
 507         case STT_NOTYPE: return "STT_NOTYPE";
 508         case STT_OBJECT: return "STT_OBJECT";
 509         case STT_FUNC: return "STT_FUNC";
 510         case STT_SECTION: return "STT_SECTION";
 511         case STT_FILE: return "STT_FILE";
 512         case STT_COMMON: return "STT_COMMON";
 513         case STT_TLS: return "STT_TLS";
 514         case 13:
 515                 if (mach == EM_SPARCV9)
 516                         return "STT_SPARC_REGISTER";
 517                 break;
 518         }
 519         snprintf(s_type, sizeof(s_type), "<unknown: %#x>", type);
 520         return (s_type);
 521 }
 522
 523 static const char *
 524 st_type_S(unsigned int type)
 525 {
 526         static char s_type[32];
 527
 528         switch (type) {
 529         case STT_NOTYPE: return "NOTY";
 530         case STT_OBJECT: return "OBJT";
 531         case STT_FUNC: return "FUNC";
 532         case STT_SECTION: return "SECT";
 533         case STT_FILE: return "FILE";
 534         }
 535         snprintf(s_type, sizeof(s_type), "<unknown: %#x>", type);
 536         return (s_type);
 537 }
 538
 539 static const char *
 540 st_bindings(unsigned int sbind)
 541 {
 542         static char s_sbind[32];
 543
 544         switch (sbind) {
 545         case STB_LOCAL: return "STB_LOCAL";
 546         case STB_GLOBAL: return "STB_GLOBAL";
 547         case STB_WEAK: return "STB_WEAK";
 548         case STB_GNU_UNIQUE: return "STB_GNU_UNIQUE";
 549         default:
 550                 if (sbind >= STB_LOOS && sbind <= STB_HIOS)
 551                         return "OS";
 552                 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC)
 553                         return "PROC";
 554                 else
 555                         snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>",
 556                             sbind);
 557                 return (s_sbind);
 558         }
 559 }
 560
 561 static const char *
 562 st_bindings_S(unsigned int sbind)
 563 {
 564         static char s_sbind[32];
 565
 566         switch (sbind) {
 567         case STB_LOCAL: return "LOCL";
 568         case STB_GLOBAL: return "GLOB";
 569         case STB_WEAK: return "WEAK";
 570         case STB_GNU_UNIQUE: return "UNIQ";
 571         default:
 572                 if (sbind >= STB_LOOS && sbind <= STB_HIOS)
 573                         return "OS";
 574                 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC)
 575                         return "PROC";
 576                 else
 577                         snprintf(s_sbind, sizeof(s_sbind), "<%#x>",
 578                             sbind);
 579                 return (s_sbind);
 580         }
 581 }
 582
 583 static unsigned char st_others[] = {
 584         'D', 'I', 'H', 'P'
 585 };
 586
 587 static void     add_name(struct elfdump *ed, const char *name);
 588 static void     elf_print_object(struct elfdump *ed);
 589 static void     elf_print_elf(struct elfdump *ed);
 590 static void     elf_print_ehdr(struct elfdump *ed);
 591 static void     elf_print_phdr(struct elfdump *ed);
 592 static void     elf_print_shdr(struct elfdump *ed);
 593 static void     elf_print_symtab(struct elfdump *ed, int i);
 594 static void     elf_print_symtabs(struct elfdump *ed);
 595 static void     elf_print_symver(struct elfdump *ed);
 596 static void     elf_print_verdef(struct elfdump *ed, struct section *s);
 597 static void     elf_print_verneed(struct elfdump *ed, struct section *s);
 598 static void     elf_print_interp(struct elfdump *ed);
 599 static void     elf_print_dynamic(struct elfdump *ed);
 600 static void     elf_print_rel_entry(struct elfdump *ed, struct section *s,
 601     int j, struct rel_entry *r);
 602 static void     elf_print_rela(struct elfdump *ed, struct section *s,
 603     Elf_Data *data);
 604 static void     elf_print_rel(struct elfdump *ed, struct section *s,
 605     Elf_Data *data);
 606 static void     elf_print_reloc(struct elfdump *ed);
 607 static void     elf_print_got(struct elfdump *ed);
 608 static void     elf_print_got_section(struct elfdump *ed, struct section *s);
 609 static void     elf_print_note(struct elfdump *ed);
 610 static void     elf_print_svr4_hash(struct elfdump *ed, struct section *s);
 611 static void     elf_print_svr4_hash64(struct elfdump *ed, struct section *s);
 612 static void     elf_print_gnu_hash(struct elfdump *ed, struct section *s);
 613 static void     elf_print_hash(struct elfdump *ed);
 614 static void     elf_print_checksum(struct elfdump *ed);
 615 static void     find_gotrel(struct elfdump *ed, struct section *gs,
 616     struct rel_entry *got);
 617 static struct spec_name *find_name(struct elfdump *ed, const char *name);
 618 static int      get_ent_count(const struct section *s, int *ent_count);
 619 static const char *get_symbol_name(struct elfdump *ed, uint32_t symtab, int i);
 620 static const char *get_string(struct elfdump *ed, int strtab, size_t off);
 621 static void     get_versym(struct elfdump *ed, int i, uint16_t **vs, int *nvs);
 622 static void     load_sections(struct elfdump *ed);
 623 static void     unload_sections(struct elfdump *ed);
 624 static void     usage(void);
 625 #ifdef  USE_LIBARCHIVE_AR
 626 static int      ac_detect_ar(int fd);
 627 static void     ac_print_ar(struct elfdump *ed, int fd);
 628 #else
 629 static void     elf_print_ar(struct elfdump *ed, int fd);
 630 #endif  /* USE_LIBARCHIVE_AR */
 631
 632 static struct option elfdump_longopts[] =
 633 {
 634         { "help",       no_argument,    NULL,   'H' },
 635         { "version",    no_argument,    NULL,   'V' },
 636         { NULL,         0,              NULL,   0   }
 637 };
 638
 639 int
 640 main(int ac, char **av)
 641 {
 642         struct elfdump          *ed, ed_storage;
 643         struct spec_name        *sn;
 644         int                      ch, i;
 645
 646         ed = &ed_storage;
 647         memset(ed, 0, sizeof(*ed));
 648         STAILQ_INIT(&ed->snl);
 649         ed->out = stdout;
 650         while ((ch = getopt_long(ac, av, "acdeiGHhknN:prsSvVw:",
 651                 elfdump_longopts, NULL)) != -1)
 652                 switch (ch) {
 653                 case 'a':
 654                         ed->options = ED_ALL;
 655                         break;
 656                 case 'c':
 657                         ed->options |= ED_SHDR;
 658                         break;
 659                 case 'd':
 660                         ed->options |= ED_DYN;
 661                         break;
 662                 case 'e':
 663                         ed->options |= ED_EHDR;
 664                         break;
 665                 case 'i':
 666                         ed->options |= ED_INTERP;
 667                         break;
 668                 case 'G':
 669                         ed->options |= ED_GOT;
 670                         break;
 671                 case 'h':
 672                         ed->options |= ED_HASH;
 673                         break;
 674                 case 'k':
 675                         ed->options |= ED_CHECKSUM;
 676                         break;
 677                 case 'n':
 678                         ed->options |= ED_NOTE;
 679                         break;
 680                 case 'N':
 681                         add_name(ed, optarg);
 682                         break;
 683                 case 'p':
 684                         ed->options |= ED_PHDR;
 685                         break;
 686                 case 'r':
 687                         ed->options |= ED_REL;
 688                         break;
 689                 case 's':
 690                         ed->options |= ED_SYMTAB;
 691                         break;
 692                 case 'S':
 693                         ed->flags |= SOLARIS_FMT;
 694                         break;
 695                 case 'v':
 696                         ed->options |= ED_SYMVER;
 697                         break;
 698                 case 'V':
 699                         (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(),
 700                             elftc_version());
 701                         exit(EXIT_SUCCESS);
 702                         break;
 703                 case 'w':
 704                         if ((ed->out = fopen(optarg, "w")) == NULL)
 705                                 err(EXIT_FAILURE, "%s", optarg);
 706                         break;
 707                 case '?':
 708                 case 'H':
 709                 default:
 710                         usage();
 711                 }
 712
 713         ac -= optind;
 714         av += optind;
 715
 716         if (ed->options == 0)
 717                 ed->options = ED_ALL;
 718         sn = NULL;
 719         if (ed->options & ED_SYMTAB &&
 720             (STAILQ_EMPTY(&ed->snl) || (sn = find_name(ed, "ARSYM")) != NULL)) {
 721                 ed->flags |= PRINT_ARSYM;
 722                 if (sn != NULL) {
 723                         STAILQ_REMOVE(&ed->snl, sn, spec_name, sn_list);
 724                         if (STAILQ_EMPTY(&ed->snl))
 725                                 ed->flags |= ONLY_ARSYM;
 726                 }
 727         }
 728         if (ac == 0)
 729                 usage();
 730         if (ac > 1)
 731                 ed->flags |= PRINT_FILENAME;
 732         if (elf_version(EV_CURRENT) == EV_NONE)
 733                 errx(EXIT_FAILURE, "ELF library initialization failed: %s",
 734                     elf_errmsg(-1));
 735
 736         for (i = 0; i < ac; i++) {
 737                 ed->filename = av[i];
 738                 ed->archive = NULL;
 739                 elf_print_object(ed);
 740         }
 741
 742         exit(EXIT_SUCCESS);
 743 }
 744
 745 #ifdef USE_LIBARCHIVE_AR
 746
 747 /* Archive symbol table entry. */
 748 struct arsym_entry {
 749         char *sym_name;
 750         size_t off;
 751 };
 752
 753 /*
 754  * Convenient wrapper for general libarchive error handling.
 755  */
 756 #define AC(CALL) do {                                                   \
 757         if ((CALL)) {                                                   \
 758                 warnx("%s", archive_error_string(a));                   \
 759                 return;                                                 \
 760         }                                                               \
 761 } while (0)
 762
 763 /*
 764  * Detect an ar(1) archive using libarchive(3).
 765  */
 766 static int
 767 ac_detect_ar(int fd)
 768 {
 769         struct archive          *a;
 770         struct archive_entry    *entry;
 771         int                      r;
 772
 773         r = -1;
 774         if ((a = archive_read_new()) == NULL)
 775                 return (0);
 776         archive_read_support_format_ar(a);
 777         if (archive_read_open_fd(a, fd, 10240) == ARCHIVE_OK)
 778                 r = archive_read_next_header(a, &entry);
 779         archive_read_close(a);
 780         archive_read_free(a);
 781
 782         return (r == ARCHIVE_OK);
 783 }
 784
 785 /*
 786  * Dump an ar(1) archive using libarchive(3).
 787  */
 788 static void
 789 ac_print_ar(struct elfdump *ed, int fd)
 790 {
 791         struct archive          *a;
 792         struct archive_entry    *entry;
 793         struct arsym_entry      *arsym;
 794         const char              *name;
 795         char                     idx[10], *b;
 796         void                    *buff;
 797         size_t                   size;
 798         uint32_t                 cnt, i;
 799         int                      r;
 800
 801         if (lseek(fd, 0, SEEK_SET) == -1)
 802                 err(EXIT_FAILURE, "lseek failed");
 803         if ((a = archive_read_new()) == NULL)
 804                 errx(EXIT_FAILURE, "%s", archive_error_string(a));
 805         archive_read_support_format_ar(a);
 806         AC(archive_read_open_fd(a, fd, 10240));
 807         for(;;) {
 808                 r = archive_read_next_header(a, &entry);
 809                 if (r == ARCHIVE_FATAL)
 810                         errx(EXIT_FAILURE, "%s", archive_error_string(a));
 811                 if (r == ARCHIVE_EOF)
 812                         break;
 813                 if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY)
 814                         warnx("%s", archive_error_string(a));
 815                 if (r == ARCHIVE_RETRY)
 816                         continue;
 817                 name = archive_entry_pathname(entry);
 818                 size = archive_entry_size(entry);
 819                 if (size == 0)
 820                         continue;
 821                 if ((buff = malloc(size)) == NULL) {
 822                         warn("malloc failed");
 823                         continue;
 824                 }
 825                 if (archive_read_data(a, buff, size) != (ssize_t)size) {
 826                         warnx("%s", archive_error_string(a));
 827                         free(buff);
 828                         continue;
 829                 }
 830
 831                 /*
 832                  * Note that when processing arsym via libarchive, there is
 833                  * no way to tell which member a certain symbol belongs to,
 834                  * since we can not just "lseek" to a member offset and read
 835                  * the member header.
 836                  */
 837                 if (!strcmp(name, "/") && ed->flags & PRINT_ARSYM) {
 838                         b = buff;
 839                         cnt = be32dec(b);
 840                         if (cnt == 0) {
 841                                 free(buff);
 842                                 continue;
 843                         }
 844                         arsym = calloc(cnt, sizeof(*arsym));
 845                         if (arsym == NULL)
 846                                 err(EXIT_FAILURE, "calloc failed");
 847                         b += sizeof(uint32_t);
 848                         for (i = 0; i < cnt; i++) {
 849                                 arsym[i].off = be32dec(b);
 850                                 b += sizeof(uint32_t);
 851                         }
 852                         for (i = 0; i < cnt; i++) {
 853                                 arsym[i].sym_name = b;
 854                                 b += strlen(b) + 1;
 855                         }
 856                         if (ed->flags & SOLARIS_FMT) {
 857                                 PRT("\nSymbol Table: (archive)\n");
 858                                 PRT("     index    offset    symbol\n");
 859                         } else
 860                                 PRT("\nsymbol table (archive):\n");
 861                         for (i = 0; i < cnt; i++) {
 862                                 if (ed->flags & SOLARIS_FMT) {
 863                                         snprintf(idx, sizeof(idx), "[%d]", i);
 864                                         PRT("%10s  ", idx);
 865                                         PRT("0x%8.8jx  ",
 866                                             (uintmax_t)arsym[i].off);
 867                                         PRT("%s\n", arsym[i].sym_name);
 868                                 } else {
 869                                         PRT("\nentry: %d\n", i);
 870                                         PRT("\toffset: %#jx\n",
 871                                             (uintmax_t)arsym[i].off);
 872                                         PRT("\tsymbol: %s\n",
 873                                             arsym[i].sym_name);
 874                                 }
 875                         }
 876                         free(arsym);
 877                         free(buff);
 878                         /* No need to continue if we only dump ARSYM. */
 879                         if (ed->flags & ONLY_ARSYM) {
 880                                 AC(archive_read_close(a));
 881                                 AC(archive_read_free(a));
 882                                 return;
 883                         }
 884                         continue;
 885                 }
 886                 if ((ed->elf = elf_memory(buff, size)) == NULL) {
 887                         warnx("elf_memroy() failed: %s",
 888                               elf_errmsg(-1));
 889                         free(buff);
 890                         continue;
 891                 }
 892                 /* Skip non-ELF member. */
 893                 if (elf_kind(ed->elf) == ELF_K_ELF) {
 894                         printf("\n%s(%s):\n", ed->archive, name);
 895                         elf_print_elf(ed);
 896                 }
 897                 elf_end(ed->elf);
 898                 free(buff);
 899         }
 900         AC(archive_read_close(a));
 901         AC(archive_read_free(a));
 902 }
 903
 904 #else  /* USE_LIBARCHIVE_AR */
 905
 906 /*
 907  * Dump an ar(1) archive.
 908  */
 909 static void
 910 elf_print_ar(struct elfdump *ed, int fd)
 911 {
 912         Elf             *e;
 913         Elf_Arhdr       *arh;
 914         Elf_Arsym       *arsym;
 915         Elf_Cmd          cmd;
 916         char             idx[10];
 917         size_t           cnt, i;
 918
 919         ed->ar = ed->elf;
 920
 921         if (ed->flags & PRINT_ARSYM) {
 922                 cnt = 0;
 923                 if ((arsym = elf_getarsym(ed->ar, &cnt)) == NULL) {
 924                         warnx("elf_getarsym failed: %s", elf_errmsg(-1));
 925                         goto print_members;
 926                 }
 927                 if (cnt == 0)
 928                         goto print_members;
 929                 if (ed->flags & SOLARIS_FMT) {
 930                         PRT("\nSymbol Table: (archive)\n");
 931                         PRT("     index    offset    member name and symbol\n");
 932                 } else
 933                         PRT("\nsymbol table (archive):\n");
 934                 for (i = 0; i < cnt - 1; i++) {
 935                         if (elf_rand(ed->ar, arsym[i].as_off) !=
 936                             arsym[i].as_off) {
 937                                 warnx("elf_rand failed: %s", elf_errmsg(-1));
 938                                 break;
 939                         }
 940                         if ((e = elf_begin(fd, ELF_C_READ, ed->ar)) == NULL) {
 941                                 warnx("elf_begin failed: %s", elf_errmsg(-1));
 942                                 break;
 943                         }
 944                         if ((arh = elf_getarhdr(e)) == NULL) {
 945                                 warnx("elf_getarhdr failed: %s",
 946                                     elf_errmsg(-1));
 947                                 break;
 948                         }
 949                         if (ed->flags & SOLARIS_FMT) {
 950                                 snprintf(idx, sizeof(idx), "[%zu]", i);
 951                                 PRT("%10s  ", idx);
 952                                 PRT("0x%8.8jx  ",
 953                                     (uintmax_t)arsym[i].as_off);
 954                                 PRT("(%s):%s\n", arh->ar_name,
 955                                     arsym[i].as_name);
 956                         } else {
 957                                 PRT("\nentry: %zu\n", i);
 958                                 PRT("\toffset: %#jx\n",
 959                                     (uintmax_t)arsym[i].as_off);
 960                                 PRT("\tmember: %s\n", arh->ar_name);
 961                                 PRT("\tsymbol: %s\n", arsym[i].as_name);
 962                         }
 963                         elf_end(e);
 964                 }
 965
 966                 /* No need to continue if we only dump ARSYM. */
 967                 if (ed->flags & ONLY_ARSYM)
 968                         return;
 969         }
 970
 971 print_members:
 972
 973         /* Rewind the archive. */
 974         if (elf_rand(ed->ar, SARMAG) != SARMAG) {
 975                 warnx("elf_rand failed: %s", elf_errmsg(-1));
 976                 return;
 977         }
 978
 979         /* Dump each member of the archive. */
 980         cmd = ELF_C_READ;
 981         while ((ed->elf = elf_begin(fd, cmd, ed->ar)) != NULL) {
 982                 /* Skip non-ELF member. */
 983                 if (elf_kind(ed->elf) == ELF_K_ELF) {
 984                         if ((arh = elf_getarhdr(ed->elf)) == NULL) {
 985                                 warnx("elf_getarhdr failed: %s",
 986                                     elf_errmsg(-1));
 987                                 break;
 988                         }
 989                         printf("\n%s(%s):\n", ed->archive, arh->ar_name);
 990                         elf_print_elf(ed);
 991                 }
 992                 cmd = elf_next(ed->elf);
 993                 elf_end(ed->elf);
 994         }
 995 }
 996
 997 #endif  /* USE_LIBARCHIVE_AR */
 998
 999 /*
1000  * Dump an object. (ELF object or ar(1) archive)
1001  */
1002 static void
1003 elf_print_object(struct elfdump *ed)
1004 {
1005         int fd;
1006
1007         if ((fd = open(ed->filename, O_RDONLY)) == -1) {
1008                 warn("open %s failed", ed->filename);
1009                 return;
1010         }
1011
1012 #ifdef  USE_LIBARCHIVE_AR
1013         if (ac_detect_ar(fd)) {
1014                 ed->archive = ed->filename;
1015                 ac_print_ar(ed, fd);
1016                 return;
1017         }
1018 #endif  /* USE_LIBARCHIVE_AR */
1019
1020         if ((ed->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
1021                 warnx("elf_begin() failed: %s", elf_errmsg(-1));
1022                 return;
1023         }
1024
1025         switch (elf_kind(ed->elf)) {
1026         case ELF_K_NONE:
1027                 warnx("Not an ELF file.");
1028                 return;
1029         case ELF_K_ELF:
1030                 if (ed->flags & PRINT_FILENAME)
1031                         printf("\n%s:\n", ed->filename);
1032                 elf_print_elf(ed);
1033                 break;
1034         case ELF_K_AR:
1035 #ifndef USE_LIBARCHIVE_AR
1036                 ed->archive = ed->filename;
1037                 elf_print_ar(ed, fd);
1038 #endif
1039                 break;
1040         default:
1041                 warnx("Internal: libelf returned unknown elf kind.");
1042                 return;
1043         }
1044
1045         elf_end(ed->elf);
1046 }
1047
1048 /*
1049  * Dump an ELF object.
1050  */
1051 static void
1052 elf_print_elf(struct elfdump *ed)
1053 {
1054
1055         if (gelf_getehdr(ed->elf, &ed->ehdr) == NULL) {
1056                 warnx("gelf_getehdr failed: %s", elf_errmsg(-1));
1057                 return;
1058         }
1059         if ((ed->ec = gelf_getclass(ed->elf)) == ELFCLASSNONE) {
1060                 warnx("gelf_getclass failed: %s", elf_errmsg(-1));
1061                 return;
1062         }
1063
1064         if (ed->options & (ED_SHDR | ED_DYN | ED_REL | ED_GOT | ED_SYMTAB |
1065             ED_SYMVER | ED_NOTE | ED_HASH))
1066                 load_sections(ed);
1067
1068         if (ed->options & ED_EHDR)
1069                 elf_print_ehdr(ed);
1070         if (ed->options & ED_PHDR)
1071                 elf_print_phdr(ed);
1072         if (ed->options & ED_INTERP)
1073                 elf_print_interp(ed);
1074         if (ed->options & ED_SHDR)
1075                 elf_print_shdr(ed);
1076         if (ed->options & ED_DYN)
1077                 elf_print_dynamic(ed);
1078         if (ed->options & ED_REL)
1079                 elf_print_reloc(ed);
1080         if (ed->options & ED_GOT)
1081                 elf_print_got(ed);
1082         if (ed->options & ED_SYMTAB)
1083                 elf_print_symtabs(ed);
1084         if (ed->options & ED_SYMVER)
1085                 elf_print_symver(ed);
1086         if (ed->options & ED_NOTE)
1087                 elf_print_note(ed);
1088         if (ed->options & ED_HASH)
1089                 elf_print_hash(ed);
1090         if (ed->options & ED_CHECKSUM)
1091                 elf_print_checksum(ed);
1092
1093         unload_sections(ed);
1094 }
1095
1096 /*
1097  * Read the section headers from ELF object and store them in the
1098  * internal cache.
1099  */
1100 static void
1101 load_sections(struct elfdump *ed)
1102 {
1103         struct section  *s;
1104         const char      *name;
1105         Elf_Scn         *scn;
1106         GElf_Shdr        sh;
1107         size_t           shstrndx, ndx;
1108         int              elferr;
1109
1110         assert(ed->sl == NULL);
1111
1112         if (!elf_getshnum(ed->elf, &ed->shnum)) {
1113                 warnx("elf_getshnum failed: %s", elf_errmsg(-1));
1114                 return;
1115         }
1116         if (ed->shnum == 0)
1117                 return;
1118         if ((ed->sl = calloc(ed->shnum, sizeof(*ed->sl))) == NULL)
1119                 err(EXIT_FAILURE, "calloc failed");
1120         if (!elf_getshstrndx(ed->elf, &shstrndx)) {
1121                 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1));
1122                 return;
1123         }
1124         if ((scn = elf_getscn(ed->elf, 0)) == NULL) {
1125                 warnx("elf_getscn failed: %s", elf_errmsg(-1));
1126                 return;
1127         }
1128         (void) elf_errno();
1129         do {
1130                 if (gelf_getshdr(scn, &sh) == NULL) {
1131                         warnx("gelf_getshdr failed: %s", elf_errmsg(-1));
1132                         (void) elf_errno();
1133                         continue;
1134                 }
1135                 if ((name = elf_strptr(ed->elf, shstrndx, sh.sh_name)) == NULL) {
1136                         (void) elf_errno();
1137                         name = "ERROR";
1138                 }
1139                 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF)
1140                         if ((elferr = elf_errno()) != 0) {
1141                                 warnx("elf_ndxscn failed: %s",
1142                                     elf_errmsg(elferr));
1143                                 continue;
1144                         }
1145                 if (ndx >= ed->shnum) {
1146                         warnx("section index of '%s' out of range", name);
1147                         continue;
1148                 }
1149                 s = &ed->sl[ndx];
1150                 s->name = name;
1151                 s->scn = scn;
1152                 s->off = sh.sh_offset;
1153                 s->sz = sh.sh_size;
1154                 s->entsize = sh.sh_entsize;
1155                 s->align = sh.sh_addralign;
1156                 s->type = sh.sh_type;
1157                 s->flags = sh.sh_flags;
1158                 s->addr = sh.sh_addr;
1159                 s->link = sh.sh_link;
1160                 s->info = sh.sh_info;
1161         } while ((scn = elf_nextscn(ed->elf, scn)) != NULL);
1162         elferr = elf_errno();
1163         if (elferr != 0)
1164                 warnx("elf_nextscn failed: %s", elf_errmsg(elferr));
1165 }
1166
1167 /*
1168  * Release section related resources.
1169  */
1170 static void
1171 unload_sections(struct elfdump *ed)
1172 {
1173         if (ed->sl != NULL) {
1174                 free(ed->sl);
1175                 ed->sl = NULL;
1176         }
1177 }
1178
1179 /*
1180  * Add a name to the '-N' name list.
1181  */
1182 static void
1183 add_name(struct elfdump *ed, const char *name)
1184 {
1185         struct spec_name *sn;
1186
1187         if (find_name(ed, name))
1188                 return;
1189         if ((sn = malloc(sizeof(*sn))) == NULL) {
1190                 warn("malloc failed");
1191                 return;
1192         }
1193         sn->name = name;
1194         STAILQ_INSERT_TAIL(&ed->snl, sn, sn_list);
1195 }
1196
1197 /*
1198  * Lookup a name in the '-N' name list.
1199  */
1200 static struct spec_name *
1201 find_name(struct elfdump *ed, const char *name)
1202 {
1203         struct spec_name *sn;
1204
1205         STAILQ_FOREACH(sn, &ed->snl, sn_list) {
1206                 if (!strcmp(sn->name, name))
1207                         return (sn);
1208         }
1209
1210         return (NULL);
1211 }
1212
1213 /*
1214  * Retrieve the name of a symbol using the section index of the symbol
1215  * table and the index of the symbol within that table.
1216  */
1217 static const char *
1218 get_symbol_name(struct elfdump *ed, uint32_t symtab, int i)
1219 {
1220         static char      sname[64];
1221         struct section  *s;
1222         const char      *name;
1223         GElf_Sym         sym;
1224         Elf_Data        *data;
1225         int              elferr;
1226
1227         if (symtab >= ed->shnum)
1228                 return ("");
1229         s = &ed->sl[symtab];
1230         if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM)
1231                 return ("");
1232         (void) elf_errno();
1233         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
1234                 elferr = elf_errno();
1235                 if (elferr != 0)
1236                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
1237                 return ("");
1238         }
1239         if (gelf_getsym(data, i, &sym) != &sym)
1240                 return ("");
1241         if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) {
1242                 if (sym.st_shndx < ed->shnum) {
1243                         snprintf(sname, sizeof(sname), "%s (section)",
1244                             ed->sl[sym.st_shndx].name);
1245                         return (sname);
1246                 } else
1247                         return ("");
1248         }
1249         if ((name = elf_strptr(ed->elf, s->link, sym.st_name)) == NULL)
1250                 return ("");
1251
1252         return (name);
1253 }
1254
1255 /*
1256  * Retrieve a string using string table section index and the string offset.
1257  */
1258 static const char*
1259 get_string(struct elfdump *ed, int strtab, size_t off)
1260 {
1261         const char *name;
1262
1263         if ((name = elf_strptr(ed->elf, strtab, off)) == NULL)
1264                 return ("");
1265
1266         return (name);
1267 }
1268
1269 /*
1270  * Dump the ELF Executable Header.
1271  */
1272 static void
1273 elf_print_ehdr(struct elfdump *ed)
1274 {
1275
1276         if (!STAILQ_EMPTY(&ed->snl))
1277                 return;
1278
1279         if (ed->flags & SOLARIS_FMT) {
1280                 PRT("\nELF Header\n");
1281                 PRT("  ei_magic:   { %#x, %c, %c, %c }\n",
1282                     ed->ehdr.e_ident[0], ed->ehdr.e_ident[1],
1283                     ed->ehdr.e_ident[2], ed->ehdr.e_ident[3]);
1284                 PRT("  ei_class:   %-18s",
1285                     elf_class_str(ed->ehdr.e_ident[EI_CLASS]));
1286                 PRT("  ei_data:      %s\n",
1287                     elf_data_str(ed->ehdr.e_ident[EI_DATA]));
1288                 PRT("  e_machine:  %-18s", e_machines(ed->ehdr.e_machine));
1289                 PRT("  e_version:    %s\n",
1290                     elf_version_str(ed->ehdr.e_version));
1291                 PRT("  e_type:     %s\n", elf_type_str(ed->ehdr.e_type));
1292                 PRT("  e_flags:    %18d\n", ed->ehdr.e_flags);
1293                 PRT("  e_entry:    %#18jx", (uintmax_t)ed->ehdr.e_entry);
1294                 PRT("  e_ehsize: %6d", ed->ehdr.e_ehsize);
1295                 PRT("  e_shstrndx:%5d\n", ed->ehdr.e_shstrndx);
1296                 PRT("  e_shoff:    %#18jx", (uintmax_t)ed->ehdr.e_shoff);
1297                 PRT("  e_shentsize: %3d", ed->ehdr.e_shentsize);
1298                 PRT("  e_shnum:   %5d\n", ed->ehdr.e_shnum);
1299                 PRT("  e_phoff:    %#18jx", (uintmax_t)ed->ehdr.e_phoff);
1300                 PRT("  e_phentsize: %3d", ed->ehdr.e_phentsize);
1301                 PRT("  e_phnum:   %5d\n", ed->ehdr.e_phnum);
1302         } else {
1303                 PRT("\nelf header:\n");
1304                 PRT("\n");
1305                 PRT("\te_ident: %s %s %s\n",
1306                     elf_class_str(ed->ehdr.e_ident[EI_CLASS]),
1307                     elf_data_str(ed->ehdr.e_ident[EI_DATA]),
1308                     ei_abis[ed->ehdr.e_ident[EI_OSABI]]);
1309                 PRT("\te_type: %s\n", elf_type_str(ed->ehdr.e_type));
1310                 PRT("\te_machine: %s\n", e_machines(ed->ehdr.e_machine));
1311                 PRT("\te_version: %s\n", elf_version_str(ed->ehdr.e_version));
1312                 PRT("\te_entry: %#jx\n", (uintmax_t)ed->ehdr.e_entry);
1313                 PRT("\te_phoff: %ju\n", (uintmax_t)ed->ehdr.e_phoff);
1314                 PRT("\te_shoff: %ju\n", (uintmax_t) ed->ehdr.e_shoff);
1315                 PRT("\te_flags: %u\n", ed->ehdr.e_flags);
1316                 PRT("\te_ehsize: %u\n", ed->ehdr.e_ehsize);
1317                 PRT("\te_phentsize: %u\n", ed->ehdr.e_phentsize);
1318                 PRT("\te_phnum: %u\n", ed->ehdr.e_phnum);
1319                 PRT("\te_shentsize: %u\n", ed->ehdr.e_shentsize);
1320                 PRT("\te_shnum: %u\n", ed->ehdr.e_shnum);
1321                 PRT("\te_shstrndx: %u\n", ed->ehdr.e_shstrndx);
1322         }
1323 }
1324
1325 /*
1326  * Dump the ELF Program Header Table.
1327  */
1328 static void
1329 elf_print_phdr(struct elfdump *ed)
1330 {
1331         GElf_Phdr        ph;
1332         size_t           phnum, i;
1333         int              header;
1334
1335         if (elf_getphnum(ed->elf, &phnum) == 0) {
1336                 warnx("elf_getphnum failed: %s", elf_errmsg(-1));
1337                 return;
1338         }
1339         header = 0;
1340         for (i = 0; i < phnum; i++) {
1341                 if (gelf_getphdr(ed->elf, i, &ph) != &ph) {
1342                         warnx("elf_getphdr failed: %s", elf_errmsg(-1));
1343                         continue;
1344                 }
1345                 if (!STAILQ_EMPTY(&ed->snl) &&
1346                     find_name(ed, elf_phdr_type_str(ph.p_type)) == NULL)
1347                         continue;
1348                 if (ed->flags & SOLARIS_FMT) {
1349                         PRT("\nProgram Header[%zu]:\n", i);
1350                         PRT("    p_vaddr:      %#-14jx", (uintmax_t)ph.p_vaddr);
1351                         PRT("  p_flags:    [ %s ]\n",
1352                             p_flags[ph.p_flags & 0x7]);
1353                         PRT("    p_paddr:      %#-14jx", (uintmax_t)ph.p_paddr);
1354                         PRT("  p_type:     [ %s ]\n",
1355                             elf_phdr_type_str(ph.p_type));
1356                         PRT("    p_filesz:     %#-14jx",
1357                             (uintmax_t)ph.p_filesz);
1358                         PRT("  p_memsz:    %#jx\n", (uintmax_t)ph.p_memsz);
1359                         PRT("    p_offset:     %#-14jx",
1360                             (uintmax_t)ph.p_offset);
1361                         PRT("  p_align:    %#jx\n", (uintmax_t)ph.p_align);
1362                 } else {
1363                         if (!header) {
1364                                 PRT("\nprogram header:\n");
1365                                 header = 1;
1366                         }
1367                         PRT("\n");
1368                         PRT("entry: %zu\n", i);
1369                         PRT("\tp_type: %s\n", elf_phdr_type_str(ph.p_type));
1370                         PRT("\tp_offset: %ju\n", (uintmax_t)ph.p_offset);
1371                         PRT("\tp_vaddr: %#jx\n", (uintmax_t)ph.p_vaddr);
1372                         PRT("\tp_paddr: %#jx\n", (uintmax_t)ph.p_paddr);
1373                         PRT("\tp_filesz: %ju\n", (uintmax_t)ph.p_filesz);
1374                         PRT("\tp_memsz: %ju\n", (uintmax_t)ph.p_memsz);
1375                         PRT("\tp_flags: %s\n", p_flags[ph.p_flags & 0x7]);
1376                         PRT("\tp_align: %ju\n", (uintmax_t)ph.p_align);
1377                 }
1378         }
1379 }
1380
1381 /*
1382  * Dump the ELF Section Header Table.
1383  */
1384 static void
1385 elf_print_shdr(struct elfdump *ed)
1386 {
1387         struct section *s;
1388         size_t i;
1389
1390         if (!STAILQ_EMPTY(&ed->snl))
1391                 return;
1392
1393         if ((ed->flags & SOLARIS_FMT) == 0)
1394                 PRT("\nsection header:\n");
1395         for (i = 0; i < ed->shnum; i++) {
1396                 s = &ed->sl[i];
1397                 if (ed->flags & SOLARIS_FMT) {
1398                         if (i == 0)
1399                                 continue;
1400                         PRT("\nSection Header[%zu]:", i);
1401                         PRT("  sh_name: %s\n", s->name);
1402                         PRT("    sh_addr:      %#-14jx", (uintmax_t)s->addr);
1403                         if (s->flags != 0)
1404                                 PRT("  sh_flags:   [ %s ]\n", sh_flags(s->flags));
1405                         else
1406                                 PRT("  sh_flags:   0\n");
1407                         PRT("    sh_size:      %#-14jx", (uintmax_t)s->sz);
1408                         PRT("  sh_type:    [ %s ]\n",
1409                             sh_types(ed->ehdr.e_machine, s->type));
1410                         PRT("    sh_offset:    %#-14jx", (uintmax_t)s->off);
1411                         PRT("  sh_entsize: %#jx\n", (uintmax_t)s->entsize);
1412                         PRT("    sh_link:      %-14u", s->link);
1413                         PRT("  sh_info:    %u\n", s->info);
1414                         PRT("    sh_addralign: %#jx\n", (uintmax_t)s->align);
1415                 } else {
1416                         PRT("\n");
1417                         PRT("entry: %ju\n", (uintmax_t)i);
1418                         PRT("\tsh_name: %s\n", s->name);
1419                         PRT("\tsh_type: %s\n",
1420                             sh_types(ed->ehdr.e_machine, s->type));
1421                         PRT("\tsh_flags: %s\n", sh_flags(s->flags));
1422                         PRT("\tsh_addr: %#jx\n", (uintmax_t)s->addr);
1423                         PRT("\tsh_offset: %ju\n", (uintmax_t)s->off);
1424                         PRT("\tsh_size: %ju\n", (uintmax_t)s->sz);
1425                         PRT("\tsh_link: %u\n", s->link);
1426                         PRT("\tsh_info: %u\n", s->info);
1427                         PRT("\tsh_addralign: %ju\n", (uintmax_t)s->align);
1428                         PRT("\tsh_entsize: %ju\n", (uintmax_t)s->entsize);
1429                 }
1430         }
1431 }
1432
1433 /*
1434  * Return number of entries in the given section. We'd prefer ent_count be a
1435  * size_t, but libelf APIs already use int for section indices.
1436  */
1437 static int
1438 get_ent_count(const struct section *s, int *ent_count)
1439 {
1440         if (s->entsize == 0) {
1441                 warnx("section %s has entry size 0", s->name);
1442                 return (0);
1443         } else if (s->sz / s->entsize > INT_MAX) {
1444                 warnx("section %s has invalid section count", s->name);
1445                 return (0);
1446         }
1447         *ent_count = (int)(s->sz / s->entsize);
1448         return (1);
1449 }
1450
1451 /*
1452  * Retrieve the content of the corresponding SHT_SUNW_versym section for
1453  * a symbol table section.
1454  */
1455 static void
1456 get_versym(struct elfdump *ed, int i, uint16_t **vs, int *nvs)
1457 {
1458         struct section  *s;
1459         Elf_Data        *data;
1460         size_t           j;
1461         int              elferr;
1462
1463         s = NULL;
1464         for (j = 0; j < ed->shnum; j++) {
1465                 s = &ed->sl[j];
1466                 if (s->type == SHT_SUNW_versym && s->link == (uint32_t)i)
1467                         break;
1468         }
1469         if (j >= ed->shnum) {
1470                 *vs = NULL;
1471                 return;
1472         }
1473         (void) elf_errno();
1474         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
1475                 elferr = elf_errno();
1476                 if (elferr != 0)
1477                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
1478                 *vs = NULL;
1479                 return;
1480         }
1481
1482         *vs = data->d_buf;
1483         assert(data->d_size == s->sz);
1484         if (!get_ent_count(s, nvs))
1485                 *nvs = 0;
1486 }
1487
1488 /*
1489  * Dump the symbol table section.
1490  */
1491 static void
1492 elf_print_symtab(struct elfdump *ed, int i)
1493 {
1494         struct section  *s;
1495         const char      *name;
1496         uint16_t        *vs;
1497         char             idx[10];
1498         Elf_Data        *data;
1499         GElf_Sym         sym;
1500         int              len, j, elferr, nvs;
1501
1502         s = &ed->sl[i];
1503         if (ed->flags & SOLARIS_FMT)
1504                 PRT("\nSymbol Table Section:  %s\n", s->name);
1505         else
1506                 PRT("\nsymbol table (%s):\n", s->name);
1507         (void) elf_errno();
1508         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
1509                 elferr = elf_errno();
1510                 if (elferr != 0)
1511                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
1512                 return;
1513         }
1514         vs = NULL;
1515         nvs = 0;
1516         assert(data->d_size == s->sz);
1517         if (!get_ent_count(s, &len))
1518                 return;
1519         if (ed->flags & SOLARIS_FMT) {
1520                 if (ed->ec == ELFCLASS32)
1521                         PRT("     index    value       ");
1522                 else
1523                         PRT("     index        value           ");
1524                 PRT("size     type bind oth ver shndx       name\n");
1525                 get_versym(ed, i, &vs, &nvs);
1526                 if (vs != NULL && nvs != len) {
1527                         warnx("#symbol not equal to #versym");
1528                         vs = NULL;
1529                 }
1530         }
1531         for (j = 0; j < len; j++) {
1532                 if (gelf_getsym(data, j, &sym) != &sym) {
1533                         warnx("gelf_getsym failed: %s", elf_errmsg(-1));
1534                         continue;
1535                 }
1536                 name = get_string(ed, s->link, sym.st_name);
1537                 if (ed->flags & SOLARIS_FMT) {
1538                         snprintf(idx, sizeof(idx), "[%d]", j);
1539                         if (ed->ec == ELFCLASS32)
1540                                 PRT("%10s  ", idx);
1541                         else
1542                                 PRT("%10s      ", idx);
1543                         PRT("0x%8.8jx ", (uintmax_t)sym.st_value);
1544                         if (ed->ec == ELFCLASS32)
1545                                 PRT("0x%8.8jx  ", (uintmax_t)sym.st_size);
1546                         else
1547                                 PRT("0x%12.12jx  ", (uintmax_t)sym.st_size);
1548                         PRT("%s ", st_type_S(GELF_ST_TYPE(sym.st_info)));
1549                         PRT("%s  ", st_bindings_S(GELF_ST_BIND(sym.st_info)));
1550                         PRT("%c  ", st_others[sym.st_other]);
1551                         PRT("%3u ", (vs == NULL ? 0 : vs[j]));
1552                         PRT("%-11.11s ", sh_name(ed, sym.st_shndx));
1553                         PRT("%s\n", name);
1554                 } else {
1555                         PRT("\nentry: %d\n", j);
1556                         PRT("\tst_name: %s\n", name);
1557                         PRT("\tst_value: %#jx\n", (uintmax_t)sym.st_value);
1558                         PRT("\tst_size: %ju\n", (uintmax_t)sym.st_size);
1559                         PRT("\tst_info: %s %s\n",
1560                             st_type(ed->ehdr.e_machine,
1561                             GELF_ST_TYPE(sym.st_info)),
1562                             st_bindings(GELF_ST_BIND(sym.st_info)));
1563                         PRT("\tst_shndx: %ju\n", (uintmax_t)sym.st_shndx);
1564                 }
1565         }
1566 }
1567
1568 /*
1569  * Dump the symbol tables. (.dynsym and .symtab)
1570  */
1571 static void
1572 elf_print_symtabs(struct elfdump *ed)
1573 {
1574         size_t i;
1575
1576         for (i = 0; i < ed->shnum; i++)
1577                 if ((ed->sl[i].type == SHT_SYMTAB ||
1578                     ed->sl[i].type == SHT_DYNSYM) &&
1579                     (STAILQ_EMPTY(&ed->snl) || find_name(ed, ed->sl[i].name)))
1580                         elf_print_symtab(ed, i);
1581 }
1582
1583 /*
1584  * Dump the content of .dynamic section.
1585  */
1586 static void
1587 elf_print_dynamic(struct elfdump *ed)
1588 {
1589         struct section  *s;
1590         const char      *name;
1591         char             idx[10];
1592         Elf_Data        *data;
1593         GElf_Dyn         dyn;
1594         int              elferr, i, len;
1595
1596         s = NULL;
1597         for (i = 0; (size_t)i < ed->shnum; i++) {
1598                 s = &ed->sl[i];
1599                 if (s->type == SHT_DYNAMIC &&
1600                     (STAILQ_EMPTY(&ed->snl) || find_name(ed, s->name)))
1601                         break;
1602         }
1603         if ((size_t)i >= ed->shnum)
1604                 return;
1605
1606         if (ed->flags & SOLARIS_FMT) {
1607                 PRT("Dynamic Section:  %s\n", s->name);
1608                 PRT("     index  tag               value\n");
1609         } else
1610                 PRT("\ndynamic:\n");
1611         (void) elf_errno();
1612         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
1613                 elferr = elf_errno();
1614                 if (elferr != 0)
1615                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
1616                 return;
1617         }
1618         assert(data->d_size == s->sz);
1619         if (!get_ent_count(s, &len))
1620                 return;
1621         for (i = 0; i < len; i++) {
1622                 if (gelf_getdyn(data, i, &dyn) != &dyn) {
1623                         warnx("gelf_getdyn failed: %s", elf_errmsg(-1));
1624                         continue;
1625                 }
1626
1627                 if (ed->flags & SOLARIS_FMT) {
1628                         snprintf(idx, sizeof(idx), "[%d]", i);
1629                         PRT("%10s  %-16s ", idx, d_tags(dyn.d_tag));
1630                 } else {
1631                         PRT("\n");
1632                         PRT("entry: %d\n", i);
1633                         PRT("\td_tag: %s\n", d_tags(dyn.d_tag));
1634                 }
1635                 switch(dyn.d_tag) {
1636                 case DT_NEEDED:
1637                 case DT_SONAME:
1638                 case DT_RPATH:
1639                 case DT_RUNPATH:
1640                         if ((name = elf_strptr(ed->elf, s->link,
1641                                     dyn.d_un.d_val)) == NULL)
1642                                 name = "";
1643                         if (ed->flags & SOLARIS_FMT)
1644                                 PRT("%#-16jx %s\n", (uintmax_t)dyn.d_un.d_val,
1645                                     name);
1646                         else
1647                                 PRT("\td_val: %s\n", name);
1648                         break;
1649                 case DT_PLTRELSZ:
1650                 case DT_RELA:
1651                 case DT_RELASZ:
1652                 case DT_RELAENT:
1653                 case DT_RELACOUNT:
1654                 case DT_STRSZ:
1655                 case DT_SYMENT:
1656                 case DT_RELSZ:
1657                 case DT_RELENT:
1658                 case DT_PLTREL:
1659                 case DT_VERDEF:
1660                 case DT_VERDEFNUM:
1661                 case DT_VERNEED:
1662                 case DT_VERNEEDNUM:
1663                 case DT_VERSYM:
1664                         if (ed->flags & SOLARIS_FMT)
1665                                 PRT("%#jx\n", (uintmax_t)dyn.d_un.d_val);
1666                         else
1667                                 PRT("\td_val: %ju\n",
1668                                     (uintmax_t)dyn.d_un.d_val);
1669                         break;
1670                 case DT_PLTGOT:
1671                 case DT_HASH:
1672                 case DT_GNU_HASH:
1673                 case DT_STRTAB:
1674                 case DT_SYMTAB:
1675                 case DT_INIT:
1676                 case DT_FINI:
1677                 case DT_REL:
1678                 case DT_JMPREL:
1679                 case DT_DEBUG:
1680                         if (ed->flags & SOLARIS_FMT)
1681                                 PRT("%#jx\n", (uintmax_t)dyn.d_un.d_ptr);
1682                         else
1683                                 PRT("\td_ptr: %#jx\n",
1684                                     (uintmax_t)dyn.d_un.d_ptr);
1685                         break;
1686                 case DT_NULL:
1687                 case DT_SYMBOLIC:
1688                 case DT_TEXTREL:
1689                 default:
1690                         if (ed->flags & SOLARIS_FMT)
1691                                 PRT("\n");
1692                         break;
1693                 }
1694         }
1695 }
1696
1697 /*
1698  * Dump a .rel/.rela section entry.
1699  */
1700 static void
1701 elf_print_rel_entry(struct elfdump *ed, struct section *s, int j,
1702     struct rel_entry *r)
1703 {
1704
1705         if (ed->flags & SOLARIS_FMT) {
1706                 PRT("        %-23s ", elftc_reloc_type_str(ed->ehdr.e_machine,
1707                         GELF_R_TYPE(r->u_r.rel.r_info)));
1708                 PRT("%#12jx ", (uintmax_t)r->u_r.rel.r_offset);
1709                 if (r->type == SHT_RELA)
1710                         PRT("%10jd  ", (intmax_t)r->u_r.rela.r_addend);
1711                 else
1712                         PRT("    ");
1713                 PRT("%-14s ", s->name);
1714                 PRT("%s\n", r->symn);
1715         } else {
1716                 PRT("\n");
1717                 PRT("entry: %d\n", j);
1718                 PRT("\tr_offset: %#jx\n", (uintmax_t)r->u_r.rel.r_offset);
1719                 if (ed->ec == ELFCLASS32)
1720                         PRT("\tr_info: %#jx\n", (uintmax_t)
1721                             ELF32_R_INFO(ELF64_R_SYM(r->u_r.rel.r_info),
1722                             ELF64_R_TYPE(r->u_r.rel.r_info)));
1723                 else
1724                         PRT("\tr_info: %#jx\n", (uintmax_t)r->u_r.rel.r_info);
1725                 if (r->type == SHT_RELA)
1726                         PRT("\tr_addend: %jd\n",
1727                             (intmax_t)r->u_r.rela.r_addend);
1728         }
1729 }
1730
1731 /*
1732  * Dump a relocation section of type SHT_RELA.
1733  */
1734 static void
1735 elf_print_rela(struct elfdump *ed, struct section *s, Elf_Data *data)
1736 {
1737         struct rel_entry        r;
1738         int                     j, len;
1739
1740         if (ed->flags & SOLARIS_FMT) {
1741                 PRT("\nRelocation Section:  %s\n", s->name);
1742                 PRT("        type                          offset     "
1743                     "addend  section        with respect to\n");
1744         } else
1745                 PRT("\nrelocation with addend (%s):\n", s->name);
1746         r.type = SHT_RELA;
1747         assert(data->d_size == s->sz);
1748         if (!get_ent_count(s, &len))
1749                 return;
1750         for (j = 0; j < len; j++) {
1751                 if (gelf_getrela(data, j, &r.u_r.rela) != &r.u_r.rela) {
1752                         warnx("gelf_getrela failed: %s",
1753                             elf_errmsg(-1));
1754                         continue;
1755                 }
1756                 r.symn = get_symbol_name(ed, s->link,
1757                     GELF_R_SYM(r.u_r.rela.r_info));
1758                 elf_print_rel_entry(ed, s, j, &r);
1759         }
1760 }
1761
1762 /*
1763  * Dump a relocation section of type SHT_REL.
1764  */
1765 static void
1766 elf_print_rel(struct elfdump *ed, struct section *s, Elf_Data *data)
1767 {
1768         struct rel_entry        r;
1769         int                     j, len;
1770
1771         if (ed->flags & SOLARIS_FMT) {
1772                 PRT("\nRelocation Section:  %s\n", s->name);
1773                 PRT("        type                          offset     "
1774                     "section        with respect to\n");
1775         } else
1776                 PRT("\nrelocation (%s):\n", s->name);
1777         r.type = SHT_REL;
1778         assert(data->d_size == s->sz);
1779         if (!get_ent_count(s, &len))
1780                 return;
1781         for (j = 0; j < len; j++) {
1782                 if (gelf_getrel(data, j, &r.u_r.rel) != &r.u_r.rel) {
1783                         warnx("gelf_getrel failed: %s", elf_errmsg(-1));
1784                         continue;
1785                 }
1786                 r.symn = get_symbol_name(ed, s->link,
1787                     GELF_R_SYM(r.u_r.rel.r_info));
1788                 elf_print_rel_entry(ed, s, j, &r);
1789         }
1790 }
1791
1792 /*
1793  * Dump relocation sections.
1794  */
1795 static void
1796 elf_print_reloc(struct elfdump *ed)
1797 {
1798         struct section  *s;
1799         Elf_Data        *data;
1800         size_t           i;
1801         int              elferr;
1802
1803         for (i = 0; i < ed->shnum; i++) {
1804                 s = &ed->sl[i];
1805                 if ((s->type == SHT_REL || s->type == SHT_RELA) &&
1806                     (STAILQ_EMPTY(&ed->snl) || find_name(ed, s->name))) {
1807                         (void) elf_errno();
1808                         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
1809                                 elferr = elf_errno();
1810                                 if (elferr != 0)
1811                                         warnx("elf_getdata failed: %s",
1812                                             elf_errmsg(elferr));
1813                                 continue;
1814                         }
1815                         if (s->type == SHT_REL)
1816                                 elf_print_rel(ed, s, data);
1817                         else
1818                                 elf_print_rela(ed, s, data);
1819                 }
1820         }
1821 }
1822
1823 /*
1824  * Dump the content of PT_INTERP segment.
1825  */
1826 static void
1827 elf_print_interp(struct elfdump *ed)
1828 {
1829         const char *s;
1830         GElf_Phdr phdr;
1831         size_t filesize, i, phnum;
1832
1833         if (!STAILQ_EMPTY(&ed->snl) && find_name(ed, "PT_INTERP") == NULL)
1834                 return;
1835
1836         if ((s = elf_rawfile(ed->elf, &filesize)) == NULL) {
1837                 warnx("elf_rawfile failed: %s", elf_errmsg(-1));
1838                 return;
1839         }
1840         if (!elf_getphnum(ed->elf, &phnum)) {
1841                 warnx("elf_getphnum failed: %s", elf_errmsg(-1));
1842                 return;
1843         }
1844         for (i = 0; i < phnum; i++) {
1845                 if (gelf_getphdr(ed->elf, i, &phdr) != &phdr) {
1846                         warnx("elf_getphdr failed: %s", elf_errmsg(-1));
1847                         continue;
1848                 }
1849                 if (phdr.p_type == PT_INTERP) {
1850                         if (phdr.p_offset >= filesize) {
1851                                 warnx("invalid phdr offset");
1852                                 continue;
1853                         }
1854                         PRT("\ninterp:\n");
1855                         PRT("\t%s\n", s + phdr.p_offset);
1856                 }
1857         }
1858 }
1859
1860 /*
1861  * Search the relocation sections for entries referring to the .got section.
1862  */
1863 static void
1864 find_gotrel(struct elfdump *ed, struct section *gs, struct rel_entry *got)
1865 {
1866         struct section          *s;
1867         struct rel_entry         r;
1868         Elf_Data                *data;
1869         size_t                   i;
1870         int                      elferr, j, k, len;
1871
1872         for(i = 0; i < ed->shnum; i++) {
1873                 s = &ed->sl[i];
1874                 if (s->type != SHT_REL && s->type != SHT_RELA)
1875                         continue;
1876                 (void) elf_errno();
1877                 if ((data = elf_getdata(s->scn, NULL)) == NULL) {
1878                         elferr = elf_errno();
1879                         if (elferr != 0)
1880                                 warnx("elf_getdata failed: %s",
1881                                     elf_errmsg(elferr));
1882                         return;
1883                 }
1884                 memset(&r, 0, sizeof(struct rel_entry));
1885                 r.type = s->type;
1886                 assert(data->d_size == s->sz);
1887                 if (!get_ent_count(s, &len))
1888                         return;
1889                 for (j = 0; j < len; j++) {
1890                         if (s->type == SHT_REL) {
1891                                 if (gelf_getrel(data, j, &r.u_r.rel) !=
1892                                     &r.u_r.rel) {
1893                                         warnx("gelf_getrel failed: %s",
1894                                             elf_errmsg(-1));
1895                                         continue;
1896                                 }
1897                         } else {
1898                                 if (gelf_getrela(data, j, &r.u_r.rela) !=
1899                                     &r.u_r.rela) {
1900                                         warnx("gelf_getrel failed: %s",
1901                                             elf_errmsg(-1));
1902                                         continue;
1903                                 }
1904                         }
1905                         if (r.u_r.rel.r_offset >= gs->addr &&
1906                             r.u_r.rel.r_offset < gs->addr + gs->sz) {
1907                                 r.symn = get_symbol_name(ed, s->link,
1908                                     GELF_R_SYM(r.u_r.rel.r_info));
1909                                 k = (r.u_r.rel.r_offset - gs->addr) /
1910                                     gs->entsize;
1911                                 memcpy(&got[k], &r, sizeof(struct rel_entry));
1912                         }
1913                 }
1914         }
1915 }
1916
1917 static void
1918 elf_print_got_section(struct elfdump *ed, struct section *s)
1919 {
1920         struct rel_entry        *got;
1921         Elf_Data                *data, dst;
1922         int                      elferr, i, len;
1923
1924         if (s->entsize == 0) {
1925                 /* XXX IA64 GOT section generated by gcc has entry size 0. */
1926                 if (s->align != 0)
1927                         s->entsize = s->align;
1928                 else
1929                         return;
1930         }
1931
1932         if (!get_ent_count(s, &len))
1933                 return;
1934         if (ed->flags & SOLARIS_FMT)
1935                 PRT("\nGlobal Offset Table Section:  %s  (%d entries)\n",
1936                     s->name, len);
1937         else
1938                 PRT("\nglobal offset table: %s\n", s->name);
1939         (void) elf_errno();
1940         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
1941                 elferr = elf_errno();
1942                 if (elferr != 0)
1943                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
1944                 return;
1945         }
1946
1947         /*
1948          * GOT section has section type SHT_PROGBITS, thus libelf treats it as
1949          * byte stream and will not perform any translation on it. As a result,
1950          * an exlicit call to gelf_xlatetom is needed here. Depends on arch,
1951          * GOT section should be translated to either WORD or XWORD.
1952          */
1953         if (ed->ec == ELFCLASS32)
1954                 data->d_type = ELF_T_WORD;
1955         else
1956                 data->d_type = ELF_T_XWORD;
1957         memcpy(&dst, data, sizeof(Elf_Data));
1958         if (gelf_xlatetom(ed->elf, &dst, data, ed->ehdr.e_ident[EI_DATA]) !=
1959             &dst) {
1960                 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1));
1961                 return;
1962         }
1963         assert(dst.d_size == s->sz);
1964         if (ed->flags & SOLARIS_FMT) {
1965                 /*
1966                  * In verbose/Solaris mode, we search the relocation sections
1967                  * and try to find the corresponding reloc entry for each GOT
1968                  * section entry.
1969                  */
1970                 if ((got = calloc(len, sizeof(struct rel_entry))) == NULL)
1971                         err(EXIT_FAILURE, "calloc failed");
1972                 find_gotrel(ed, s, got);
1973                 if (ed->ec == ELFCLASS32) {
1974                         PRT(" ndx     addr      value    reloc              ");
1975                         PRT("addend   symbol\n");
1976                 } else {
1977                         PRT(" ndx     addr              value             ");
1978                         PRT("reloc              addend       symbol\n");
1979                 }
1980                 for(i = 0; i < len; i++) {
1981                         PRT("[%5.5d]  ", i);
1982                         if (ed->ec == ELFCLASS32) {
1983                                 PRT("%-8.8jx  ",
1984                                     (uintmax_t) (s->addr + i * s->entsize));
1985                                 PRT("%-8.8x ", *((uint32_t *)dst.d_buf + i));
1986                         } else {
1987                                 PRT("%-16.16jx  ",
1988                                     (uintmax_t) (s->addr + i * s->entsize));
1989                                 PRT("%-16.16jx  ",
1990                                     (uintmax_t) *((uint64_t *)dst.d_buf + i));
1991                         }
1992                         PRT("%-18s ", elftc_reloc_type_str(ed->ehdr.e_machine,
1993                                 GELF_R_TYPE(got[i].u_r.rel.r_info)));
1994                         if (ed->ec == ELFCLASS32)
1995                                 PRT("%-8.8jd ",
1996                                     (intmax_t)got[i].u_r.rela.r_addend);
1997                         else
1998                                 PRT("%-12.12jd ",
1999                                     (intmax_t)got[i].u_r.rela.r_addend);
2000                         if (got[i].symn == NULL)
2001                                 got[i].symn = "";
2002                         PRT("%s\n", got[i].symn);
2003                 }
2004                 free(got);
2005         } else {
2006                 for(i = 0; i < len; i++) {
2007                         PRT("\nentry: %d\n", i);
2008                         if (ed->ec == ELFCLASS32)
2009                                 PRT("\t%#x\n", *((uint32_t *)dst.d_buf + i));
2010                         else
2011                                 PRT("\t%#jx\n",
2012                                     (uintmax_t) *((uint64_t *)dst.d_buf + i));
2013                 }
2014         }
2015 }
2016
2017 /*
2018  * Dump the content of Global Offset Table section.
2019  */
2020 static void
2021 elf_print_got(struct elfdump *ed)
2022 {
2023         struct section  *s;
2024         size_t           i;
2025
2026         if (!STAILQ_EMPTY(&ed->snl))
2027                 return;
2028
2029         s = NULL;
2030         for (i = 0; i < ed->shnum; i++) {
2031                 s = &ed->sl[i];
2032                 if (s->name && !strncmp(s->name, ".got", 4) &&
2033                     (STAILQ_EMPTY(&ed->snl) || find_name(ed, s->name)))
2034                         elf_print_got_section(ed, s);
2035         }
2036 }
2037
2038 /*
2039  * Dump the content of .note.ABI-tag section.
2040  */
2041 static void
2042 elf_print_note(struct elfdump *ed)
2043 {
2044         struct section  *s;
2045         Elf_Data        *data;
2046         Elf_Note        *en;
2047         uint32_t         namesz;
2048         uint32_t         descsz;
2049         uint32_t         desc;
2050         size_t           count;
2051         int              elferr, i;
2052         uint8_t         *src;
2053         char             idx[10];
2054
2055         s = NULL;
2056         for (i = 0; (size_t)i < ed->shnum; i++) {
2057                 s = &ed->sl[i];
2058                 if (s->type == SHT_NOTE && s->name &&
2059                     !strcmp(s->name, ".note.ABI-tag") &&
2060                     (STAILQ_EMPTY(&ed->snl) || find_name(ed, s->name)))
2061                         break;
2062         }
2063         if ((size_t)i >= ed->shnum)
2064                 return;
2065         if (ed->flags & SOLARIS_FMT)
2066                 PRT("\nNote Section:  %s\n", s->name);
2067         else
2068                 PRT("\nnote (%s):\n", s->name);
2069         (void) elf_errno();
2070         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
2071                 elferr = elf_errno();
2072                 if (elferr != 0)
2073                         warnx("elf_getdata failed: %s", elf_errmsg(elferr));
2074                 return;
2075         }
2076         src = data->d_buf;
2077         count = data->d_size;
2078         while (count > sizeof(Elf_Note)) {
2079                 en = (Elf_Note *) (uintptr_t) src;
2080                 namesz = en->n_namesz;
2081                 descsz = en->n_descsz;
2082                 src += sizeof(Elf_Note);
2083                 count -= sizeof(Elf_Note);
2084                 if (roundup2(namesz, 4) + roundup2(descsz, 4) > count) {
2085                         warnx("truncated note section");
2086                         return;
2087                 }
2088                 if (ed->flags & SOLARIS_FMT) {
2089                         PRT("\n    type   %#x\n", en->n_type);
2090                         PRT("    namesz %#x:\n", en->n_namesz);
2091                         PRT("%s\n", src);
2092                 } else
2093                         PRT("\t%s ", src);
2094                 src += roundup2(namesz, 4);
2095                 count -= roundup2(namesz, 4);
2096
2097                 /*
2098                  * Note that we dump the whole desc part if we're in
2099                  * "Solaris mode", while in the normal mode, we only look
2100                  * at the first 4 bytes (a 32bit word) of the desc, i.e,
2101                  * we assume that it's always a FreeBSD version number.
2102                  */
2103                 if (ed->flags & SOLARIS_FMT) {
2104                         PRT("    descsz %#x:", en->n_descsz);
2105                         for (i = 0; (uint32_t)i < descsz; i++) {
2106                                 if ((i & 0xF) == 0) {
2107                                         snprintf(idx, sizeof(idx), "desc[%d]",
2108                                             i);
2109                                         PRT("\n      %-9s", idx);
2110                                 } else if ((i & 0x3) == 0)
2111                                         PRT("  ");
2112                                 PRT(" %2.2x", src[i]);
2113                         }
2114                         PRT("\n");
2115                 } else {
2116                         if (ed->ehdr.e_ident[EI_DATA] == ELFDATA2MSB)
2117                                 desc = be32dec(src);
2118                         else
2119                                 desc = le32dec(src);
2120                         PRT("%d\n", desc);
2121                 }
2122                 src += roundup2(descsz, 4);
2123                 count -= roundup2(descsz, 4);
2124         }
2125 }
2126
2127 /*
2128  * Dump a hash table.
2129  */
2130 static void
2131 elf_print_svr4_hash(struct elfdump *ed, struct section *s)
2132 {
2133         Elf_Data        *data;
2134         uint32_t        *buf;
2135         uint32_t        *bucket, *chain;
2136         uint32_t         nbucket, nchain;
2137         uint32_t        *bl, *c, maxl, total;
2138         uint32_t         i, j;
2139         int              first, elferr;
2140         char             idx[10];
2141
2142         if (ed->flags & SOLARIS_FMT)
2143                 PRT("\nHash Section:  %s\n", s->name);
2144         else
2145                 PRT("\nhash table (%s):\n", s->name);
2146         (void) elf_errno();
2147         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
2148                 elferr = elf_errno();
2149                 if (elferr != 0)
2150                         warnx("elf_getdata failed: %s",
2151                             elf_errmsg(elferr));
2152                 return;
2153         }
2154         if (data->d_size < 2 * sizeof(uint32_t)) {
2155                 warnx(".hash section too small");
2156                 return;
2157         }
2158         buf = data->d_buf;
2159         nbucket = buf[0];
2160         nchain = buf[1];
2161         if (nbucket <= 0 || nchain <= 0) {
2162                 warnx("Malformed .hash section");
2163                 return;
2164         }
2165         if (data->d_size !=
2166             ((uint64_t)nbucket + (uint64_t)nchain + 2) * sizeof(uint32_t)) {
2167                 warnx("Malformed .hash section");
2168                 return;
2169         }
2170         bucket = &buf[2];
2171         chain = &buf[2 + nbucket];
2172
2173         if (ed->flags & SOLARIS_FMT) {
2174                 maxl = 0;
2175                 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
2176                         err(EXIT_FAILURE, "calloc failed");
2177                 for (i = 0; i < nbucket; i++)
2178                         for (j = bucket[i]; j > 0 && j < nchain; j = chain[j])
2179                                 if (++bl[i] > maxl)
2180                                         maxl = bl[i];
2181                 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
2182                         err(EXIT_FAILURE, "calloc failed");
2183                 for (i = 0; i < nbucket; i++)
2184                         c[bl[i]]++;
2185                 PRT("    bucket    symndx    name\n");
2186                 for (i = 0; i < nbucket; i++) {
2187                         first = 1;
2188                         for (j = bucket[i]; j > 0 && j < nchain; j = chain[j]) {
2189                                 if (first) {
2190                                         PRT("%10d  ", i);
2191                                         first = 0;
2192                                 } else
2193                                         PRT("            ");
2194                                 snprintf(idx, sizeof(idx), "[%d]", j);
2195                                 PRT("%-10s  ", idx);
2196                                 PRT("%s\n", get_symbol_name(ed, s->link, j));
2197                         }
2198                 }
2199                 PRT("\n");
2200                 total = 0;
2201                 for (i = 0; i <= maxl; i++) {
2202                         total += c[i] * i;
2203                         PRT("%10u  buckets contain %8d symbols\n", c[i], i);
2204                 }
2205                 PRT("%10u  buckets         %8u symbols (globals)\n", nbucket,
2206                     total);
2207         } else {
2208                 PRT("\nnbucket: %u\n", nbucket);
2209                 PRT("nchain: %u\n\n", nchain);
2210                 for (i = 0; i < nbucket; i++)
2211                         PRT("bucket[%d]:\n\t%u\n\n", i, bucket[i]);
2212                 for (i = 0; i < nchain; i++)
2213                         PRT("chain[%d]:\n\t%u\n\n", i, chain[i]);
2214         }
2215 }
2216
2217 /*
2218  * Dump a 64bit hash table.
2219  */
2220 static void
2221 elf_print_svr4_hash64(struct elfdump *ed, struct section *s)
2222 {
2223         Elf_Data        *data, dst;
2224         uint64_t        *buf;
2225         uint64_t        *bucket, *chain;
2226         uint64_t         nbucket, nchain;
2227         uint64_t        *bl, *c, maxl, total;
2228         uint64_t         i, j;
2229         int              elferr, first;
2230         char             idx[10];
2231
2232         if (ed->flags & SOLARIS_FMT)
2233                 PRT("\nHash Section:  %s\n", s->name);
2234         else
2235                 PRT("\nhash table (%s):\n", s->name);
2236
2237         /*
2238          * ALPHA uses 64-bit hash entries. Since libelf assumes that
2239          * .hash section contains only 32-bit entry, an explicit
2240          * gelf_xlatetom is needed here.
2241          */
2242         (void) elf_errno();
2243         if ((data = elf_rawdata(s->scn, NULL)) == NULL) {
2244                 elferr = elf_errno();
2245                 if (elferr != 0)
2246                         warnx("elf_rawdata failed: %s",
2247                             elf_errmsg(elferr));
2248                 return;
2249         }
2250         data->d_type = ELF_T_XWORD;
2251         memcpy(&dst, data, sizeof(Elf_Data));
2252         if (gelf_xlatetom(ed->elf, &dst, data,
2253                 ed->ehdr.e_ident[EI_DATA]) != &dst) {
2254                 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1));
2255                 return;
2256         }
2257         if (dst.d_size < 2 * sizeof(uint64_t)) {
2258                 warnx(".hash section too small");
2259                 return;
2260         }
2261         buf = dst.d_buf;
2262         nbucket = buf[0];
2263         nchain = buf[1];
2264         if (nbucket <= 0 || nchain <= 0) {
2265                 warnx("Malformed .hash section");
2266                 return;
2267         }
2268         if (dst.d_size != (nbucket + nchain + 2) * sizeof(uint64_t)) {
2269                 warnx("Malformed .hash section");
2270                 return;
2271         }
2272         bucket = &buf[2];
2273         chain = &buf[2 + nbucket];
2274
2275         if (ed->flags & SOLARIS_FMT) {
2276                 maxl = 0;
2277                 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
2278                         err(EXIT_FAILURE, "calloc failed");
2279                 for (i = 0; i < nbucket; i++)
2280                         for (j = bucket[i]; j > 0 && j < nchain; j = chain[j])
2281                                 if (++bl[i] > maxl)
2282                                         maxl = bl[i];
2283                 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
2284                         err(EXIT_FAILURE, "calloc failed");
2285                 for (i = 0; i < nbucket; i++)
2286                         c[bl[i]]++;
2287                 PRT("    bucket    symndx    name\n");
2288                 for (i = 0; i < nbucket; i++) {
2289                         first = 1;
2290                         for (j = bucket[i]; j > 0 && j < nchain; j = chain[j]) {
2291                                 if (first) {
2292                                         PRT("%10zu  ", i);
2293                                         first = 0;
2294                                 } else
2295                                         PRT("            ");
2296                                 snprintf(idx, sizeof(idx), "[%zu]", (size_t)j);
2297                                 PRT("%-10s  ", idx);
2298                                 PRT("%s\n", get_symbol_name(ed, s->link, j));
2299                         }
2300                 }
2301                 PRT("\n");
2302                 total = 0;
2303                 for (i = 0; i <= maxl; i++) {
2304                         total += c[i] * i;
2305                         PRT("%10ju  buckets contain %8zu symbols\n",
2306                             (uintmax_t)c[i], i);
2307                 }
2308                 PRT("%10ju  buckets         %8ju symbols (globals)\n",
2309                     (uintmax_t)nbucket, (uintmax_t)total);
2310         } else {
2311                 PRT("\nnbucket: %ju\n", (uintmax_t)nbucket);
2312                 PRT("nchain: %ju\n\n", (uintmax_t)nchain);
2313                 for (i = 0; i < nbucket; i++)
2314                         PRT("bucket[%zu]:\n\t%ju\n\n", i, (uintmax_t)bucket[i]);
2315                 for (i = 0; i < nchain; i++)
2316                         PRT("chain[%zu]:\n\t%ju\n\n", i, (uintmax_t)chain[i]);
2317         }
2318
2319 }
2320
2321 /*
2322  * Dump a GNU hash table.
2323  */
2324 static void
2325 elf_print_gnu_hash(struct elfdump *ed, struct section *s)
2326 {
2327         struct section  *ds;
2328         Elf_Data        *data;
2329         uint32_t        *buf;
2330         uint32_t        *bucket, *chain;
2331         uint32_t         nbucket, nchain, symndx, maskwords, shift2;
2332         uint32_t        *bl, *c, maxl, total;
2333         uint32_t         i, j;
2334         int              first, elferr, dynsymcount;
2335         char             idx[10];
2336
2337         if (ed->flags & SOLARIS_FMT)
2338                 PRT("\nGNU Hash Section:  %s\n", s->name);
2339         else
2340                 PRT("\ngnu hash table (%s):\n", s->name);
2341         (void) elf_errno();
2342         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
2343                 elferr = elf_errno();
2344                 if (elferr != 0)
2345                         warnx("elf_getdata failed: %s",
2346                             elf_errmsg(elferr));
2347                 return;
2348         }
2349         if (data->d_size < 4 * sizeof(uint32_t)) {
2350                 warnx(".gnu.hash section too small");
2351                 return;
2352         }
2353         buf = data->d_buf;
2354         nbucket = buf[0];
2355         symndx = buf[1];
2356         maskwords = buf[2];
2357         shift2 = buf[3];
2358         buf += 4;
2359         if (s->link >= ed->shnum) {
2360                 warnx("Malformed .gnu.hash section");
2361                 return;
2362         }
2363         ds = &ed->sl[s->link];
2364         if (!get_ent_count(ds, &dynsymcount))
2365                 return;
2366         if (symndx >= (uint32_t)dynsymcount) {
2367                 warnx("Malformed .gnu.hash section");
2368                 return;
2369         }
2370         nchain = dynsymcount - symndx;
2371         if (data->d_size != 4 * sizeof(uint32_t) + maskwords *
2372             (ed->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) +
2373             ((uint64_t)nbucket + (uint64_t)nchain) * sizeof(uint32_t)) {
2374                 warnx("Malformed .gnu.hash section");
2375                 return;
2376         }
2377         bucket = buf + (ed->ec == ELFCLASS32 ? maskwords : maskwords * 2);
2378         chain = bucket + nbucket;
2379
2380         if (ed->flags & SOLARIS_FMT) {
2381                 maxl = 0;
2382                 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
2383                         err(EXIT_FAILURE, "calloc failed");
2384                 for (i = 0; i < nbucket; i++)
2385                         for (j = bucket[i]; j > 0 && j - symndx < nchain; j++) {
2386                                 if (++bl[i] > maxl)
2387                                         maxl = bl[i];
2388                                 if (chain[j - symndx] & 1)
2389                                         break;
2390                         }
2391                 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
2392                         err(EXIT_FAILURE, "calloc failed");
2393                 for (i = 0; i < nbucket; i++)
2394                         c[bl[i]]++;
2395                 PRT("    bucket    symndx    name\n");
2396                 for (i = 0; i < nbucket; i++) {
2397                         first = 1;
2398                         for (j = bucket[i]; j > 0 && j - symndx < nchain; j++) {
2399                                 if (first) {
2400                                         PRT("%10d  ", i);
2401                                         first = 0;
2402                                 } else
2403                                         PRT("            ");
2404                                 snprintf(idx, sizeof(idx), "[%d]", j );
2405                                 PRT("%-10s  ", idx);
2406                                 PRT("%s\n", get_symbol_name(ed, s->link, j));
2407                                 if (chain[j - symndx] & 1)
2408                                         break;
2409                         }
2410                 }
2411                 PRT("\n");
2412                 total = 0;
2413                 for (i = 0; i <= maxl; i++) {
2414                         total += c[i] * i;
2415                         PRT("%10u  buckets contain %8d symbols\n", c[i], i);
2416                 }
2417                 PRT("%10u  buckets         %8u symbols (globals)\n", nbucket,
2418                     total);
2419         } else {
2420                 PRT("\nnbucket: %u\n", nbucket);
2421                 PRT("symndx: %u\n", symndx);
2422                 PRT("maskwords: %u\n", maskwords);
2423                 PRT("shift2: %u\n", shift2);
2424                 PRT("nchain: %u\n\n", nchain);
2425                 for (i = 0; i < nbucket; i++)
2426                         PRT("bucket[%d]:\n\t%u\n\n", i, bucket[i]);
2427                 for (i = 0; i < nchain; i++)
2428                         PRT("chain[%d]:\n\t%u\n\n", i, chain[i]);
2429         }
2430 }
2431
2432 /*
2433  * Dump hash tables.
2434  */
2435 static void
2436 elf_print_hash(struct elfdump *ed)
2437 {
2438         struct section  *s;
2439         size_t           i;
2440
2441         for (i = 0; i < ed->shnum; i++) {
2442                 s = &ed->sl[i];
2443                 if ((s->type == SHT_HASH || s->type == SHT_GNU_HASH) &&
2444                     (STAILQ_EMPTY(&ed->snl) || find_name(ed, s->name))) {
2445                         if (s->type == SHT_GNU_HASH)
2446                                 elf_print_gnu_hash(ed, s);
2447                         else if (ed->ehdr.e_machine == EM_ALPHA &&
2448                             s->entsize == 8)
2449                                 elf_print_svr4_hash64(ed, s);
2450                         else
2451                                 elf_print_svr4_hash(ed, s);
2452                 }
2453         }
2454 }
2455
2456 /*
2457  * Dump the content of a Version Definition(SHT_SUNW_Verdef) Section.
2458  */
2459 static void
2460 elf_print_verdef(struct elfdump *ed, struct section *s)
2461 {
2462         Elf_Data        *data;
2463         Elf32_Verdef    *vd;
2464         Elf32_Verdaux   *vda;
2465         const char      *str;
2466         char             idx[10];
2467         uint8_t         *buf, *end, *buf2;
2468         int              i, j, elferr, count;
2469
2470         if (ed->flags & SOLARIS_FMT)
2471                 PRT("Version Definition Section:  %s\n", s->name);
2472         else
2473                 PRT("\nversion definition section (%s):\n", s->name);
2474         (void) elf_errno();
2475         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
2476                 elferr = elf_errno();
2477                 if (elferr != 0)
2478                         warnx("elf_getdata failed: %s",
2479                             elf_errmsg(elferr));
2480                 return;
2481         }
2482         buf = data->d_buf;
2483         end = buf + data->d_size;
2484         i = 0;
2485         if (ed->flags & SOLARIS_FMT)
2486                 PRT("     index  version                     dependency\n");
2487         while (buf + sizeof(Elf32_Verdef) <= end) {
2488                 vd = (Elf32_Verdef *) (uintptr_t) buf;
2489                 if (ed->flags & SOLARIS_FMT) {
2490                         snprintf(idx, sizeof(idx), "[%d]", vd->vd_ndx);
2491                         PRT("%10s  ", idx);
2492                 } else {
2493                         PRT("\nentry: %d\n", i++);
2494                         PRT("\tvd_version: %u\n", vd->vd_version);
2495                         PRT("\tvd_flags: %u\n", vd->vd_flags);
2496                         PRT("\tvd_ndx: %u\n", vd->vd_ndx);
2497                         PRT("\tvd_cnt: %u\n", vd->vd_cnt);
2498                         PRT("\tvd_hash: %u\n", vd->vd_hash);
2499                         PRT("\tvd_aux: %u\n", vd->vd_aux);
2500                         PRT("\tvd_next: %u\n\n", vd->vd_next);
2501                 }
2502                 buf2 = buf + vd->vd_aux;
2503                 j = 0;
2504                 count = 0;
2505                 while (buf2 + sizeof(Elf32_Verdaux) <= end && j < vd->vd_cnt) {
2506                         vda = (Elf32_Verdaux *) (uintptr_t) buf2;
2507                         str = get_string(ed, s->link, vda->vda_name);
2508                         if (ed->flags & SOLARIS_FMT) {
2509                                 if (count == 0)
2510                                         PRT("%-26.26s", str);
2511                                 else if (count == 1)
2512                                         PRT("  %-20.20s", str);
2513                                 else {
2514                                         PRT("\n%40.40s", "");
2515                                         PRT("%s", str);
2516                                 }
2517                         } else {
2518                                 PRT("\t\tvda: %d\n", j++);
2519                                 PRT("\t\t\tvda_name: %s\n", str);
2520                                 PRT("\t\t\tvda_next: %u\n", vda->vda_next);
2521                         }
2522                         if (vda->vda_next == 0) {
2523                                 if (ed->flags & SOLARIS_FMT) {
2524                                         if (vd->vd_flags & VER_FLG_BASE) {
2525                                                 if (count == 0)
2526                                                         PRT("%-20.20s", "");
2527                                                 PRT("%s", "[ BASE ]");
2528                                         }
2529                                         PRT("\n");
2530                                 }
2531                                 break;
2532                         }
2533                         if (ed->flags & SOLARIS_FMT)
2534                                 count++;
2535                         buf2 += vda->vda_next;
2536                 }
2537                 if (vd->vd_next == 0)
2538                         break;
2539                 buf += vd->vd_next;
2540         }
2541 }
2542
2543 /*
2544  * Dump the content of a Version Needed(SHT_SUNW_Verneed) Section.
2545  */
2546 static void
2547 elf_print_verneed(struct elfdump *ed, struct section *s)
2548 {
2549         Elf_Data        *data;
2550         Elf32_Verneed   *vn;
2551         Elf32_Vernaux   *vna;
2552         uint8_t         *buf, *end, *buf2;
2553         int              i, j, elferr, first;
2554
2555         if (ed->flags & SOLARIS_FMT)
2556                 PRT("\nVersion Needed Section:  %s\n", s->name);
2557         else
2558                 PRT("\nversion need section (%s):\n", s->name);
2559         (void) elf_errno();
2560         if ((data = elf_getdata(s->scn, NULL)) == NULL) {
2561                 elferr = elf_errno();
2562                 if (elferr != 0)
2563                         warnx("elf_getdata failed: %s",
2564                             elf_errmsg(elferr));
2565                 return;
2566         }
2567         buf = data->d_buf;
2568         end = buf + data->d_size;
2569         if (ed->flags & SOLARIS_FMT)
2570                 PRT("            file                        version\n");
2571         i = 0;
2572         while (buf + sizeof(Elf32_Verneed) <= end) {
2573                 vn = (Elf32_Verneed *) (uintptr_t) buf;
2574                 if (ed->flags & SOLARIS_FMT)
2575                         PRT("            %-26.26s  ",
2576                             get_string(ed, s->link, vn->vn_file));
2577                 else {
2578                         PRT("\nentry: %d\n", i++);
2579                         PRT("\tvn_version: %u\n", vn->vn_version);
2580                         PRT("\tvn_cnt: %u\n", vn->vn_cnt);
2581                         PRT("\tvn_file: %s\n",
2582                             get_string(ed, s->link, vn->vn_file));
2583                         PRT("\tvn_aux: %u\n", vn->vn_aux);
2584                         PRT("\tvn_next: %u\n\n", vn->vn_next);
2585                 }
2586                 buf2 = buf + vn->vn_aux;
2587                 j = 0;
2588                 first = 1;
2589                 while (buf2 + sizeof(Elf32_Vernaux) <= end && j < vn->vn_cnt) {
2590                         vna = (Elf32_Vernaux *) (uintptr_t) buf2;
2591                         if (ed->flags & SOLARIS_FMT) {
2592                                 if (!first)
2593                                         PRT("%40.40s", "");
2594                                 else
2595                                         first = 0;
2596                                 PRT("%s\n", get_string(ed, s->link,
2597                                     vna->vna_name));
2598                         } else {
2599                                 PRT("\t\tvna: %d\n", j++);
2600                                 PRT("\t\t\tvna_hash: %u\n", vna->vna_hash);
2601                                 PRT("\t\t\tvna_flags: %u\n", vna->vna_flags);
2602                                 PRT("\t\t\tvna_other: %u\n", vna->vna_other);
2603                                 PRT("\t\t\tvna_name: %s\n",
2604                                     get_string(ed, s->link, vna->vna_name));
2605                                 PRT("\t\t\tvna_next: %u\n", vna->vna_next);
2606                         }
2607                         if (vna->vna_next == 0)
2608                                 break;
2609                         buf2 += vna->vna_next;
2610                 }
2611                 if (vn->vn_next == 0)
2612                         break;
2613                 buf += vn->vn_next;
2614         }
2615 }
2616
2617 /*
2618  * Dump the symbol-versioning sections.
2619  */
2620 static void
2621 elf_print_symver(struct elfdump *ed)
2622 {
2623         struct section  *s;
2624         size_t           i;
2625
2626         for (i = 0; i < ed->shnum; i++) {
2627                 s = &ed->sl[i];
2628                 if (!STAILQ_EMPTY(&ed->snl) && !find_name(ed, s->name))
2629                         continue;
2630                 if (s->type == SHT_SUNW_verdef)
2631                         elf_print_verdef(ed, s);
2632                 if (s->type == SHT_SUNW_verneed)
2633                         elf_print_verneed(ed, s);
2634         }
2635 }
2636
2637 /*
2638  * Dump the ELF checksum. See gelf_checksum(3) for details.
2639  */
2640 static void
2641 elf_print_checksum(struct elfdump *ed)
2642 {
2643
2644         if (!STAILQ_EMPTY(&ed->snl))
2645                 return;
2646
2647         PRT("\nelf checksum: %#lx\n", gelf_checksum(ed->elf));
2648 }
2649
2650 #define USAGE_MESSAGE   "\
2651 Usage: %s [options] file...\n\
2652   Display information about ELF objects and ar(1) archives.\n\n\
2653   Options:\n\
2654   -a                        Show all information.\n\
2655   -c                        Show shared headers.\n\
2656   -d                        Show dynamic symbols.\n\
2657   -e                        Show the ELF header.\n\
2658   -G                        Show the GOT.\n\
2659   -H | --help               Show a usage message and exit.\n\
2660   -h                        Show hash values.\n\
2661   -i                        Show the dynamic interpreter.\n\
2662   -k                        Show the ELF checksum.\n\
2663   -n                        Show the contents of note sections.\n\
2664   -N NAME                   Show the section named \"NAME\".\n\
2665   -p                        Show the program header.\n\
2666   -r                        Show relocations.\n\
2667   -s                        Show the symbol table.\n\
2668   -S                        Use the Solaris elfdump format.\n\
2669   -v                        Show symbol-versioning information.\n\
2670   -V | --version            Print a version identifier and exit.\n\
2671   -w FILE                   Write output to \"FILE\".\n"
2672
2673 static void
2674 usage(void)
2675 {
2676         fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME());
2677         exit(EXIT_FAILURE);
2678 }