contrib/elftoolchain/readelf/readelf.c

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