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 3469 2016-05-15 23:16:09Z emaste $"); 51 52 /* Backwards compatability for older FreeBSD releases. */ 53 #ifndef ELFOSABI_CLOUDABI 54 #define ELFOSABI_CLOUDABI 17 55 #endif 56 #ifndef EM_IAMCU 57 #define EM_IAMCU 6 58 #endif 59 #ifndef EM_RISCV 60 #define EM_RISCV 243 61 #endif 62 #ifndef STB_GNU_UNIQUE 63 #define STB_GNU_UNIQUE 10 64 #endif 65 #ifndef STT_SPARC_REGISTER 66 #define STT_SPARC_REGISTER 13 67 #endif 68 69 70 /* 71 * readelf(1) options. 72 */ 73 #define RE_AA 0x00000001 74 #define RE_C 0x00000002 75 #define RE_DD 0x00000004 76 #define RE_D 0x00000008 77 #define RE_G 0x00000010 78 #define RE_H 0x00000020 79 #define RE_II 0x00000040 80 #define RE_I 0x00000080 81 #define RE_L 0x00000100 82 #define RE_NN 0x00000200 83 #define RE_N 0x00000400 84 #define RE_P 0x00000800 85 #define RE_R 0x00001000 86 #define RE_SS 0x00002000 87 #define RE_S 0x00004000 88 #define RE_T 0x00008000 89 #define RE_U 0x00010000 90 #define RE_VV 0x00020000 91 #define RE_WW 0x00040000 92 #define RE_W 0x00080000 93 #define RE_X 0x00100000 94 95 /* 96 * dwarf dump options. 97 */ 98 #define DW_A 0x00000001 99 #define DW_FF 0x00000002 100 #define DW_F 0x00000004 101 #define DW_I 0x00000008 102 #define DW_LL 0x00000010 103 #define DW_L 0x00000020 104 #define DW_M 0x00000040 105 #define DW_O 0x00000080 106 #define DW_P 0x00000100 107 #define DW_RR 0x00000200 108 #define DW_R 0x00000400 109 #define DW_S 0x00000800 110 111 #define DW_DEFAULT_OPTIONS (DW_A | DW_F | DW_I | DW_L | DW_O | DW_P | \ 112 DW_R | DW_RR | DW_S) 113 114 /* 115 * readelf(1) run control flags. 116 */ 117 #define DISPLAY_FILENAME 0x0001 118 119 /* 120 * Internal data structure for sections. 121 */ 122 struct section { 123 const char *name; /* section name */ 124 Elf_Scn *scn; /* section scn */ 125 uint64_t off; /* section offset */ 126 uint64_t sz; /* section size */ 127 uint64_t entsize; /* section entsize */ 128 uint64_t align; /* section alignment */ 129 uint64_t type; /* section type */ 130 uint64_t flags; /* section flags */ 131 uint64_t addr; /* section virtual addr */ 132 uint32_t link; /* section link ndx */ 133 uint32_t info; /* section info ndx */ 134 }; 135 136 struct dumpop { 137 union { 138 size_t si; /* section index */ 139 const char *sn; /* section name */ 140 } u; 141 enum { 142 DUMP_BY_INDEX = 0, 143 DUMP_BY_NAME 144 } type; /* dump type */ 145 #define HEX_DUMP 0x0001 146 #define STR_DUMP 0x0002 147 int op; /* dump operation */ 148 STAILQ_ENTRY(dumpop) dumpop_list; 149 }; 150 151 struct symver { 152 const char *name; 153 int type; 154 }; 155 156 /* 157 * Structure encapsulates the global data for readelf(1). 158 */ 159 struct readelf { 160 const char *filename; /* current processing file. */ 161 int options; /* command line options. */ 162 int flags; /* run control flags. */ 163 int dop; /* dwarf dump options. */ 164 Elf *elf; /* underlying ELF descriptor. */ 165 Elf *ar; /* archive ELF descriptor. */ 166 Dwarf_Debug dbg; /* DWARF handle. */ 167 Dwarf_Half cu_psize; /* DWARF CU pointer size. */ 168 Dwarf_Half cu_osize; /* DWARF CU offset size. */ 169 Dwarf_Half cu_ver; /* DWARF CU version. */ 170 GElf_Ehdr ehdr; /* ELF header. */ 171 int ec; /* ELF class. */ 172 size_t shnum; /* #sections. */ 173 struct section *vd_s; /* Verdef section. */ 174 struct section *vn_s; /* Verneed section. */ 175 struct section *vs_s; /* Versym section. */ 176 uint16_t *vs; /* Versym array. */ 177 int vs_sz; /* Versym array size. */ 178 struct symver *ver; /* Version array. */ 179 int ver_sz; /* Size of version array. */ 180 struct section *sl; /* list of sections. */ 181 STAILQ_HEAD(, dumpop) v_dumpop; /* list of dump ops. */ 182 uint64_t (*dw_read)(Elf_Data *, uint64_t *, int); 183 uint64_t (*dw_decode)(uint8_t **, int); 184 }; 185 186 enum options 187 { 188 OPTION_DEBUG_DUMP 189 }; 190 191 static struct option longopts[] = { 192 {"all", no_argument, NULL, 'a'}, 193 {"arch-specific", no_argument, NULL, 'A'}, 194 {"archive-index", no_argument, NULL, 'c'}, 195 {"debug-dump", optional_argument, NULL, OPTION_DEBUG_DUMP}, 196 {"dynamic", no_argument, NULL, 'd'}, 197 {"file-header", no_argument, NULL, 'h'}, 198 {"full-section-name", no_argument, NULL, 'N'}, 199 {"headers", no_argument, NULL, 'e'}, 200 {"help", no_argument, 0, 'H'}, 201 {"hex-dump", required_argument, NULL, 'x'}, 202 {"histogram", no_argument, NULL, 'I'}, 203 {"notes", no_argument, NULL, 'n'}, 204 {"program-headers", no_argument, NULL, 'l'}, 205 {"relocs", no_argument, NULL, 'r'}, 206 {"sections", no_argument, NULL, 'S'}, 207 {"section-headers", no_argument, NULL, 'S'}, 208 {"section-groups", no_argument, NULL, 'g'}, 209 {"section-details", no_argument, NULL, 't'}, 210 {"segments", no_argument, NULL, 'l'}, 211 {"string-dump", required_argument, NULL, 'p'}, 212 {"symbols", no_argument, NULL, 's'}, 213 {"syms", no_argument, NULL, 's'}, 214 {"unwind", no_argument, NULL, 'u'}, 215 {"use-dynamic", no_argument, NULL, 'D'}, 216 {"version-info", no_argument, 0, 'V'}, 217 {"version", no_argument, 0, 'v'}, 218 {"wide", no_argument, 0, 'W'}, 219 {NULL, 0, NULL, 0} 220 }; 221 222 struct eflags_desc { 223 uint64_t flag; 224 const char *desc; 225 }; 226 227 struct mips_option { 228 uint64_t flag; 229 const char *desc; 230 }; 231 232 static void add_dumpop(struct readelf *re, size_t si, const char *sn, int op, 233 int t); 234 static const char *aeabi_adv_simd_arch(uint64_t simd); 235 static const char *aeabi_align_needed(uint64_t an); 236 static const char *aeabi_align_preserved(uint64_t ap); 237 static const char *aeabi_arm_isa(uint64_t ai); 238 static const char *aeabi_cpu_arch(uint64_t arch); 239 static const char *aeabi_cpu_arch_profile(uint64_t pf); 240 static const char *aeabi_div(uint64_t du); 241 static const char *aeabi_enum_size(uint64_t es); 242 static const char *aeabi_fp_16bit_format(uint64_t fp16); 243 static const char *aeabi_fp_arch(uint64_t fp); 244 static const char *aeabi_fp_denormal(uint64_t fd); 245 static const char *aeabi_fp_exceptions(uint64_t fe); 246 static const char *aeabi_fp_hpext(uint64_t fh); 247 static const char *aeabi_fp_number_model(uint64_t fn); 248 static const char *aeabi_fp_optm_goal(uint64_t fog); 249 static const char *aeabi_fp_rounding(uint64_t fr); 250 static const char *aeabi_hardfp(uint64_t hfp); 251 static const char *aeabi_mpext(uint64_t mp); 252 static const char *aeabi_optm_goal(uint64_t og); 253 static const char *aeabi_pcs_config(uint64_t pcs); 254 static const char *aeabi_pcs_got(uint64_t got); 255 static const char *aeabi_pcs_r9(uint64_t r9); 256 static const char *aeabi_pcs_ro(uint64_t ro); 257 static const char *aeabi_pcs_rw(uint64_t rw); 258 static const char *aeabi_pcs_wchar_t(uint64_t wt); 259 static const char *aeabi_t2ee(uint64_t t2ee); 260 static const char *aeabi_thumb_isa(uint64_t ti); 261 static const char *aeabi_fp_user_exceptions(uint64_t fu); 262 static const char *aeabi_unaligned_access(uint64_t ua); 263 static const char *aeabi_vfp_args(uint64_t va); 264 static const char *aeabi_virtual(uint64_t vt); 265 static const char *aeabi_wmmx_arch(uint64_t wmmx); 266 static const char *aeabi_wmmx_args(uint64_t wa); 267 static const char *elf_class(unsigned int class); 268 static const char *elf_endian(unsigned int endian); 269 static const char *elf_machine(unsigned int mach); 270 static const char *elf_osabi(unsigned int abi); 271 static const char *elf_type(unsigned int type); 272 static const char *elf_ver(unsigned int ver); 273 static const char *dt_type(unsigned int mach, unsigned int dtype); 274 static void dump_ar(struct readelf *re, int); 275 static void dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 276 static void dump_attributes(struct readelf *re); 277 static uint8_t *dump_compatibility_tag(uint8_t *p, uint8_t *pe); 278 static void dump_dwarf(struct readelf *re); 279 static void dump_dwarf_abbrev(struct readelf *re); 280 static void dump_dwarf_aranges(struct readelf *re); 281 static void dump_dwarf_block(struct readelf *re, uint8_t *b, 282 Dwarf_Unsigned len); 283 static void dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level); 284 static void dump_dwarf_frame(struct readelf *re, int alt); 285 static void dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, 286 uint8_t *insts, Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, 287 Dwarf_Addr pc, Dwarf_Debug dbg); 288 static int dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, 289 Dwarf_Addr pc, Dwarf_Unsigned func_len, Dwarf_Half cie_ra); 290 static void dump_dwarf_frame_section(struct readelf *re, struct section *s, 291 int alt); 292 static void dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info); 293 static void dump_dwarf_macinfo(struct readelf *re); 294 static void dump_dwarf_line(struct readelf *re); 295 static void dump_dwarf_line_decoded(struct readelf *re); 296 static void dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr); 297 static void dump_dwarf_loclist(struct readelf *re); 298 static void dump_dwarf_pubnames(struct readelf *re); 299 static void dump_dwarf_ranges(struct readelf *re); 300 static void dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, 301 Dwarf_Addr base); 302 static void dump_dwarf_str(struct readelf *re); 303 static void dump_eflags(struct readelf *re, uint64_t e_flags); 304 static void dump_elf(struct readelf *re); 305 static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab); 306 static void dump_dynamic(struct readelf *re); 307 static void dump_liblist(struct readelf *re); 308 static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 309 static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz); 310 static void dump_mips_options(struct readelf *re, struct section *s); 311 static void dump_mips_option_flags(const char *name, struct mips_option *opt, 312 uint64_t info); 313 static void dump_mips_reginfo(struct readelf *re, struct section *s); 314 static void dump_mips_specific_info(struct readelf *re); 315 static void dump_notes(struct readelf *re); 316 static void dump_notes_content(struct readelf *re, const char *buf, size_t sz, 317 off_t off); 318 static void dump_svr4_hash(struct section *s); 319 static void dump_svr4_hash64(struct readelf *re, struct section *s); 320 static void dump_gnu_hash(struct readelf *re, struct section *s); 321 static void dump_hash(struct readelf *re); 322 static void dump_phdr(struct readelf *re); 323 static void dump_ppc_attributes(uint8_t *p, uint8_t *pe); 324 static void dump_section_groups(struct readelf *re); 325 static void dump_symtab(struct readelf *re, int i); 326 static void dump_symtabs(struct readelf *re); 327 static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe); 328 static void dump_ver(struct readelf *re); 329 static void dump_verdef(struct readelf *re, int dump); 330 static void dump_verneed(struct readelf *re, int dump); 331 static void dump_versym(struct readelf *re); 332 static const char *dwarf_reg(unsigned int mach, unsigned int reg); 333 static const char *dwarf_regname(struct readelf *re, unsigned int num); 334 static struct dumpop *find_dumpop(struct readelf *re, size_t si, 335 const char *sn, int op, int t); 336 static int get_ent_count(struct section *s, int *ent_count); 337 static char *get_regoff_str(struct readelf *re, Dwarf_Half reg, 338 Dwarf_Addr off); 339 static const char *get_string(struct readelf *re, int strtab, size_t off); 340 static const char *get_symbol_name(struct readelf *re, int symtab, int i); 341 static uint64_t get_symbol_value(struct readelf *re, int symtab, int i); 342 static void load_sections(struct readelf *re); 343 static const char *mips_abi_fp(uint64_t fp); 344 static const char *note_type(const char *note_name, unsigned int et, 345 unsigned int nt); 346 static const char *note_type_freebsd(unsigned int nt); 347 static const char *note_type_freebsd_core(unsigned int nt); 348 static const char *note_type_linux_core(unsigned int nt); 349 static const char *note_type_gnu(unsigned int nt); 350 static const char *note_type_netbsd(unsigned int nt); 351 static const char *note_type_openbsd(unsigned int nt); 352 static const char *note_type_unknown(unsigned int nt); 353 static const char *note_type_xen(unsigned int nt); 354 static const char *option_kind(uint8_t kind); 355 static const char *phdr_type(unsigned int ptype); 356 static const char *ppc_abi_fp(uint64_t fp); 357 static const char *ppc_abi_vector(uint64_t vec); 358 static void readelf_usage(int status); 359 static void readelf_version(void); 360 static void search_loclist_at(struct readelf *re, Dwarf_Die die, 361 Dwarf_Unsigned lowpc); 362 static void search_ver(struct readelf *re); 363 static const char *section_type(unsigned int mach, unsigned int stype); 364 static void set_cu_context(struct readelf *re, Dwarf_Half psize, 365 Dwarf_Half osize, Dwarf_Half ver); 366 static const char *st_bind(unsigned int sbind); 367 static const char *st_shndx(unsigned int shndx); 368 static const char *st_type(unsigned int mach, unsigned int os, 369 unsigned int stype); 370 static const char *st_vis(unsigned int svis); 371 static const char *top_tag(unsigned int tag); 372 static void unload_sections(struct readelf *re); 373 static uint64_t _read_lsb(Elf_Data *d, uint64_t *offsetp, 374 int bytes_to_read); 375 static uint64_t _read_msb(Elf_Data *d, uint64_t *offsetp, 376 int bytes_to_read); 377 static uint64_t _decode_lsb(uint8_t **data, int bytes_to_read); 378 static uint64_t _decode_msb(uint8_t **data, int bytes_to_read); 379 static int64_t _decode_sleb128(uint8_t **dp, uint8_t *dpe); 380 static uint64_t _decode_uleb128(uint8_t **dp, uint8_t *dpe); 381 382 static struct eflags_desc arm_eflags_desc[] = { 383 {EF_ARM_RELEXEC, "relocatable executable"}, 384 {EF_ARM_HASENTRY, "has entry point"}, 385 {EF_ARM_SYMSARESORTED, "sorted symbol tables"}, 386 {EF_ARM_DYNSYMSUSESEGIDX, "dynamic symbols use segment index"}, 387 {EF_ARM_MAPSYMSFIRST, "mapping symbols precede others"}, 388 {EF_ARM_BE8, "BE8"}, 389 {EF_ARM_LE8, "LE8"}, 390 {EF_ARM_INTERWORK, "interworking enabled"}, 391 {EF_ARM_APCS_26, "uses APCS/26"}, 392 {EF_ARM_APCS_FLOAT, "uses APCS/float"}, 393 {EF_ARM_PIC, "position independent"}, 394 {EF_ARM_ALIGN8, "8 bit structure alignment"}, 395 {EF_ARM_NEW_ABI, "uses new ABI"}, 396 {EF_ARM_OLD_ABI, "uses old ABI"}, 397 {EF_ARM_SOFT_FLOAT, "software FP"}, 398 {EF_ARM_VFP_FLOAT, "VFP"}, 399 {EF_ARM_MAVERICK_FLOAT, "Maverick FP"}, 400 {0, NULL} 401 }; 402 403 static struct eflags_desc mips_eflags_desc[] = { 404 {EF_MIPS_NOREORDER, "noreorder"}, 405 {EF_MIPS_PIC, "pic"}, 406 {EF_MIPS_CPIC, "cpic"}, 407 {EF_MIPS_UCODE, "ugen_reserved"}, 408 {EF_MIPS_ABI2, "abi2"}, 409 {EF_MIPS_OPTIONS_FIRST, "odk first"}, 410 {EF_MIPS_ARCH_ASE_MDMX, "mdmx"}, 411 {EF_MIPS_ARCH_ASE_M16, "mips16"}, 412 {0, NULL} 413 }; 414 415 static struct eflags_desc powerpc_eflags_desc[] = { 416 {EF_PPC_EMB, "emb"}, 417 {EF_PPC_RELOCATABLE, "relocatable"}, 418 {EF_PPC_RELOCATABLE_LIB, "relocatable-lib"}, 419 {0, NULL} 420 }; 421 422 static struct eflags_desc sparc_eflags_desc[] = { 423 {EF_SPARC_32PLUS, "v8+"}, 424 {EF_SPARC_SUN_US1, "ultrasparcI"}, 425 {EF_SPARC_HAL_R1, "halr1"}, 426 {EF_SPARC_SUN_US3, "ultrasparcIII"}, 427 {0, NULL} 428 }; 429 430 static const char * 431 elf_osabi(unsigned int abi) 432 { 433 static char s_abi[32]; 434 435 switch(abi) { 436 case ELFOSABI_NONE: return "NONE"; 437 case ELFOSABI_HPUX: return "HPUX"; 438 case ELFOSABI_NETBSD: return "NetBSD"; 439 case ELFOSABI_GNU: return "GNU"; 440 case ELFOSABI_HURD: return "HURD"; 441 case ELFOSABI_86OPEN: return "86OPEN"; 442 case ELFOSABI_SOLARIS: return "Solaris"; 443 case ELFOSABI_AIX: return "AIX"; 444 case ELFOSABI_IRIX: return "IRIX"; 445 case ELFOSABI_FREEBSD: return "FreeBSD"; 446 case ELFOSABI_TRU64: return "TRU64"; 447 case ELFOSABI_MODESTO: return "MODESTO"; 448 case ELFOSABI_OPENBSD: return "OpenBSD"; 449 case ELFOSABI_OPENVMS: return "OpenVMS"; 450 case ELFOSABI_NSK: return "NSK"; 451 case ELFOSABI_CLOUDABI: return "CloudABI"; 452 case ELFOSABI_ARM: return "ARM"; 453 case ELFOSABI_STANDALONE: return "StandAlone"; 454 default: 455 snprintf(s_abi, sizeof(s_abi), "<unknown: %#x>", abi); 456 return (s_abi); 457 } 458 }; 459 460 static const char * 461 elf_machine(unsigned int mach) 462 { 463 static char s_mach[32]; 464 465 switch (mach) { 466 case EM_NONE: return "Unknown machine"; 467 case EM_M32: return "AT&T WE32100"; 468 case EM_SPARC: return "Sun SPARC"; 469 case EM_386: return "Intel i386"; 470 case EM_68K: return "Motorola 68000"; 471 case EM_IAMCU: return "Intel MCU"; 472 case EM_88K: return "Motorola 88000"; 473 case EM_860: return "Intel i860"; 474 case EM_MIPS: return "MIPS R3000 Big-Endian only"; 475 case EM_S370: return "IBM System/370"; 476 case EM_MIPS_RS3_LE: return "MIPS R3000 Little-Endian"; 477 case EM_PARISC: return "HP PA-RISC"; 478 case EM_VPP500: return "Fujitsu VPP500"; 479 case EM_SPARC32PLUS: return "SPARC v8plus"; 480 case EM_960: return "Intel 80960"; 481 case EM_PPC: return "PowerPC 32-bit"; 482 case EM_PPC64: return "PowerPC 64-bit"; 483 case EM_S390: return "IBM System/390"; 484 case EM_V800: return "NEC V800"; 485 case EM_FR20: return "Fujitsu FR20"; 486 case EM_RH32: return "TRW RH-32"; 487 case EM_RCE: return "Motorola RCE"; 488 case EM_ARM: return "ARM"; 489 case EM_SH: return "Hitachi SH"; 490 case EM_SPARCV9: return "SPARC v9 64-bit"; 491 case EM_TRICORE: return "Siemens TriCore embedded processor"; 492 case EM_ARC: return "Argonaut RISC Core"; 493 case EM_H8_300: return "Hitachi H8/300"; 494 case EM_H8_300H: return "Hitachi H8/300H"; 495 case EM_H8S: return "Hitachi H8S"; 496 case EM_H8_500: return "Hitachi H8/500"; 497 case EM_IA_64: return "Intel IA-64 Processor"; 498 case EM_MIPS_X: return "Stanford MIPS-X"; 499 case EM_COLDFIRE: return "Motorola ColdFire"; 500 case EM_68HC12: return "Motorola M68HC12"; 501 case EM_MMA: return "Fujitsu MMA"; 502 case EM_PCP: return "Siemens PCP"; 503 case EM_NCPU: return "Sony nCPU"; 504 case EM_NDR1: return "Denso NDR1 microprocessor"; 505 case EM_STARCORE: return "Motorola Star*Core processor"; 506 case EM_ME16: return "Toyota ME16 processor"; 507 case EM_ST100: return "STMicroelectronics ST100 processor"; 508 case EM_TINYJ: return "Advanced Logic Corp. TinyJ processor"; 509 case EM_X86_64: return "Advanced Micro Devices x86-64"; 510 case EM_PDSP: return "Sony DSP Processor"; 511 case EM_FX66: return "Siemens FX66 microcontroller"; 512 case EM_ST9PLUS: return "STMicroelectronics ST9+ 8/16 microcontroller"; 513 case EM_ST7: return "STmicroelectronics ST7 8-bit microcontroller"; 514 case EM_68HC16: return "Motorola MC68HC16 microcontroller"; 515 case EM_68HC11: return "Motorola MC68HC11 microcontroller"; 516 case EM_68HC08: return "Motorola MC68HC08 microcontroller"; 517 case EM_68HC05: return "Motorola MC68HC05 microcontroller"; 518 case EM_SVX: return "Silicon Graphics SVx"; 519 case EM_ST19: return "STMicroelectronics ST19 8-bit mc"; 520 case EM_VAX: return "Digital VAX"; 521 case EM_CRIS: return "Axis Communications 32-bit embedded processor"; 522 case EM_JAVELIN: return "Infineon Tech. 32bit embedded processor"; 523 case EM_FIREPATH: return "Element 14 64-bit DSP Processor"; 524 case EM_ZSP: return "LSI Logic 16-bit DSP Processor"; 525 case EM_MMIX: return "Donald Knuth's educational 64-bit proc"; 526 case EM_HUANY: return "Harvard University MI object files"; 527 case EM_PRISM: return "SiTera Prism"; 528 case EM_AVR: return "Atmel AVR 8-bit microcontroller"; 529 case EM_FR30: return "Fujitsu FR30"; 530 case EM_D10V: return "Mitsubishi D10V"; 531 case EM_D30V: return "Mitsubishi D30V"; 532 case EM_V850: return "NEC v850"; 533 case EM_M32R: return "Mitsubishi M32R"; 534 case EM_MN10300: return "Matsushita MN10300"; 535 case EM_MN10200: return "Matsushita MN10200"; 536 case EM_PJ: return "picoJava"; 537 case EM_OPENRISC: return "OpenRISC 32-bit embedded processor"; 538 case EM_ARC_A5: return "ARC Cores Tangent-A5"; 539 case EM_XTENSA: return "Tensilica Xtensa Architecture"; 540 case EM_VIDEOCORE: return "Alphamosaic VideoCore processor"; 541 case EM_TMM_GPP: return "Thompson Multimedia General Purpose Processor"; 542 case EM_NS32K: return "National Semiconductor 32000 series"; 543 case EM_TPC: return "Tenor Network TPC processor"; 544 case EM_SNP1K: return "Trebia SNP 1000 processor"; 545 case EM_ST200: return "STMicroelectronics ST200 microcontroller"; 546 case EM_IP2K: return "Ubicom IP2xxx microcontroller family"; 547 case EM_MAX: return "MAX Processor"; 548 case EM_CR: return "National Semiconductor CompactRISC microprocessor"; 549 case EM_F2MC16: return "Fujitsu F2MC16"; 550 case EM_MSP430: return "TI embedded microcontroller msp430"; 551 case EM_BLACKFIN: return "Analog Devices Blackfin (DSP) processor"; 552 case EM_SE_C33: return "S1C33 Family of Seiko Epson processors"; 553 case EM_SEP: return "Sharp embedded microprocessor"; 554 case EM_ARCA: return "Arca RISC Microprocessor"; 555 case EM_UNICORE: return "Microprocessor series from PKU-Unity Ltd"; 556 case EM_AARCH64: return "AArch64"; 557 case EM_RISCV: return "RISC-V"; 558 default: 559 snprintf(s_mach, sizeof(s_mach), "<unknown: %#x>", mach); 560 return (s_mach); 561 } 562 563 } 564 565 static const char * 566 elf_class(unsigned int class) 567 { 568 static char s_class[32]; 569 570 switch (class) { 571 case ELFCLASSNONE: return "none"; 572 case ELFCLASS32: return "ELF32"; 573 case ELFCLASS64: return "ELF64"; 574 default: 575 snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class); 576 return (s_class); 577 } 578 } 579 580 static const char * 581 elf_endian(unsigned int endian) 582 { 583 static char s_endian[32]; 584 585 switch (endian) { 586 case ELFDATANONE: return "none"; 587 case ELFDATA2LSB: return "2's complement, little endian"; 588 case ELFDATA2MSB: return "2's complement, big endian"; 589 default: 590 snprintf(s_endian, sizeof(s_endian), "<unknown: %#x>", endian); 591 return (s_endian); 592 } 593 } 594 595 static const char * 596 elf_type(unsigned int type) 597 { 598 static char s_type[32]; 599 600 switch (type) { 601 case ET_NONE: return "NONE (None)"; 602 case ET_REL: return "REL (Relocatable file)"; 603 case ET_EXEC: return "EXEC (Executable file)"; 604 case ET_DYN: return "DYN (Shared object file)"; 605 case ET_CORE: return "CORE (Core file)"; 606 default: 607 if (type >= ET_LOPROC) 608 snprintf(s_type, sizeof(s_type), "<proc: %#x>", type); 609 else if (type >= ET_LOOS && type <= ET_HIOS) 610 snprintf(s_type, sizeof(s_type), "<os: %#x>", type); 611 else 612 snprintf(s_type, sizeof(s_type), "<unknown: %#x>", 613 type); 614 return (s_type); 615 } 616 } 617 618 static const char * 619 elf_ver(unsigned int ver) 620 { 621 static char s_ver[32]; 622 623 switch (ver) { 624 case EV_CURRENT: return "(current)"; 625 case EV_NONE: return "(none)"; 626 default: 627 snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>", 628 ver); 629 return (s_ver); 630 } 631 } 632 633 static const char * 634 phdr_type(unsigned int ptype) 635 { 636 static char s_ptype[32]; 637 638 switch (ptype) { 639 case PT_NULL: return "NULL"; 640 case PT_LOAD: return "LOAD"; 641 case PT_DYNAMIC: return "DYNAMIC"; 642 case PT_INTERP: return "INTERP"; 643 case PT_NOTE: return "NOTE"; 644 case PT_SHLIB: return "SHLIB"; 645 case PT_PHDR: return "PHDR"; 646 case PT_TLS: return "TLS"; 647 case PT_GNU_EH_FRAME: return "GNU_EH_FRAME"; 648 case PT_GNU_STACK: return "GNU_STACK"; 649 case PT_GNU_RELRO: return "GNU_RELRO"; 650 default: 651 if (ptype >= PT_LOPROC && ptype <= PT_HIPROC) 652 snprintf(s_ptype, sizeof(s_ptype), "LOPROC+%#x", 653 ptype - PT_LOPROC); 654 else if (ptype >= PT_LOOS && ptype <= PT_HIOS) 655 snprintf(s_ptype, sizeof(s_ptype), "LOOS+%#x", 656 ptype - PT_LOOS); 657 else 658 snprintf(s_ptype, sizeof(s_ptype), "<unknown: %#x>", 659 ptype); 660 return (s_ptype); 661 } 662 } 663 664 static const char * 665 section_type(unsigned int mach, unsigned int stype) 666 { 667 static char s_stype[32]; 668 669 if (stype >= SHT_LOPROC && stype <= SHT_HIPROC) { 670 switch (mach) { 671 case EM_X86_64: 672 switch (stype) { 673 case SHT_X86_64_UNWIND: return "X86_64_UNWIND"; 674 default: 675 break; 676 } 677 break; 678 case EM_MIPS: 679 case EM_MIPS_RS3_LE: 680 switch (stype) { 681 case SHT_MIPS_LIBLIST: return "MIPS_LIBLIST"; 682 case SHT_MIPS_MSYM: return "MIPS_MSYM"; 683 case SHT_MIPS_CONFLICT: return "MIPS_CONFLICT"; 684 case SHT_MIPS_GPTAB: return "MIPS_GPTAB"; 685 case SHT_MIPS_UCODE: return "MIPS_UCODE"; 686 case SHT_MIPS_DEBUG: return "MIPS_DEBUG"; 687 case SHT_MIPS_REGINFO: return "MIPS_REGINFO"; 688 case SHT_MIPS_PACKAGE: return "MIPS_PACKAGE"; 689 case SHT_MIPS_PACKSYM: return "MIPS_PACKSYM"; 690 case SHT_MIPS_RELD: return "MIPS_RELD"; 691 case SHT_MIPS_IFACE: return "MIPS_IFACE"; 692 case SHT_MIPS_CONTENT: return "MIPS_CONTENT"; 693 case SHT_MIPS_OPTIONS: return "MIPS_OPTIONS"; 694 case SHT_MIPS_DELTASYM: return "MIPS_DELTASYM"; 695 case SHT_MIPS_DELTAINST: return "MIPS_DELTAINST"; 696 case SHT_MIPS_DELTACLASS: return "MIPS_DELTACLASS"; 697 case SHT_MIPS_DWARF: return "MIPS_DWARF"; 698 case SHT_MIPS_DELTADECL: return "MIPS_DELTADECL"; 699 case SHT_MIPS_SYMBOL_LIB: return "MIPS_SYMBOL_LIB"; 700 case SHT_MIPS_EVENTS: return "MIPS_EVENTS"; 701 case SHT_MIPS_TRANSLATE: return "MIPS_TRANSLATE"; 702 case SHT_MIPS_PIXIE: return "MIPS_PIXIE"; 703 case SHT_MIPS_XLATE: return "MIPS_XLATE"; 704 case SHT_MIPS_XLATE_DEBUG: return "MIPS_XLATE_DEBUG"; 705 case SHT_MIPS_WHIRL: return "MIPS_WHIRL"; 706 case SHT_MIPS_EH_REGION: return "MIPS_EH_REGION"; 707 case SHT_MIPS_XLATE_OLD: return "MIPS_XLATE_OLD"; 708 case SHT_MIPS_PDR_EXCEPTION: return "MIPS_PDR_EXCEPTION"; 709 default: 710 break; 711 } 712 break; 713 default: 714 break; 715 } 716 717 snprintf(s_stype, sizeof(s_stype), "LOPROC+%#x", 718 stype - SHT_LOPROC); 719 return (s_stype); 720 } 721 722 switch (stype) { 723 case SHT_NULL: return "NULL"; 724 case SHT_PROGBITS: return "PROGBITS"; 725 case SHT_SYMTAB: return "SYMTAB"; 726 case SHT_STRTAB: return "STRTAB"; 727 case SHT_RELA: return "RELA"; 728 case SHT_HASH: return "HASH"; 729 case SHT_DYNAMIC: return "DYNAMIC"; 730 case SHT_NOTE: return "NOTE"; 731 case SHT_NOBITS: return "NOBITS"; 732 case SHT_REL: return "REL"; 733 case SHT_SHLIB: return "SHLIB"; 734 case SHT_DYNSYM: return "DYNSYM"; 735 case SHT_INIT_ARRAY: return "INIT_ARRAY"; 736 case SHT_FINI_ARRAY: return "FINI_ARRAY"; 737 case SHT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 738 case SHT_GROUP: return "GROUP"; 739 case SHT_SYMTAB_SHNDX: return "SYMTAB_SHNDX"; 740 case SHT_SUNW_dof: return "SUNW_dof"; 741 case SHT_SUNW_cap: return "SUNW_cap"; 742 case SHT_GNU_HASH: return "GNU_HASH"; 743 case SHT_SUNW_ANNOTATE: return "SUNW_ANNOTATE"; 744 case SHT_SUNW_DEBUGSTR: return "SUNW_DEBUGSTR"; 745 case SHT_SUNW_DEBUG: return "SUNW_DEBUG"; 746 case SHT_SUNW_move: return "SUNW_move"; 747 case SHT_SUNW_COMDAT: return "SUNW_COMDAT"; 748 case SHT_SUNW_syminfo: return "SUNW_syminfo"; 749 case SHT_SUNW_verdef: return "SUNW_verdef"; 750 case SHT_SUNW_verneed: return "SUNW_verneed"; 751 case SHT_SUNW_versym: return "SUNW_versym"; 752 default: 753 if (stype >= SHT_LOOS && stype <= SHT_HIOS) 754 snprintf(s_stype, sizeof(s_stype), "LOOS+%#x", 755 stype - SHT_LOOS); 756 else if (stype >= SHT_LOUSER) 757 snprintf(s_stype, sizeof(s_stype), "LOUSER+%#x", 758 stype - SHT_LOUSER); 759 else 760 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 761 stype); 762 return (s_stype); 763 } 764 } 765 766 static const char * 767 dt_type(unsigned int mach, unsigned int dtype) 768 { 769 static char s_dtype[32]; 770 771 if (dtype >= DT_LOPROC && dtype <= DT_HIPROC) { 772 switch (mach) { 773 case EM_ARM: 774 switch (dtype) { 775 case DT_ARM_SYMTABSZ: 776 return "ARM_SYMTABSZ"; 777 default: 778 break; 779 } 780 break; 781 case EM_MIPS: 782 case EM_MIPS_RS3_LE: 783 switch (dtype) { 784 case DT_MIPS_RLD_VERSION: 785 return "MIPS_RLD_VERSION"; 786 case DT_MIPS_TIME_STAMP: 787 return "MIPS_TIME_STAMP"; 788 case DT_MIPS_ICHECKSUM: 789 return "MIPS_ICHECKSUM"; 790 case DT_MIPS_IVERSION: 791 return "MIPS_IVERSION"; 792 case DT_MIPS_FLAGS: 793 return "MIPS_FLAGS"; 794 case DT_MIPS_BASE_ADDRESS: 795 return "MIPS_BASE_ADDRESS"; 796 case DT_MIPS_CONFLICT: 797 return "MIPS_CONFLICT"; 798 case DT_MIPS_LIBLIST: 799 return "MIPS_LIBLIST"; 800 case DT_MIPS_LOCAL_GOTNO: 801 return "MIPS_LOCAL_GOTNO"; 802 case DT_MIPS_CONFLICTNO: 803 return "MIPS_CONFLICTNO"; 804 case DT_MIPS_LIBLISTNO: 805 return "MIPS_LIBLISTNO"; 806 case DT_MIPS_SYMTABNO: 807 return "MIPS_SYMTABNO"; 808 case DT_MIPS_UNREFEXTNO: 809 return "MIPS_UNREFEXTNO"; 810 case DT_MIPS_GOTSYM: 811 return "MIPS_GOTSYM"; 812 case DT_MIPS_HIPAGENO: 813 return "MIPS_HIPAGENO"; 814 case DT_MIPS_RLD_MAP: 815 return "MIPS_RLD_MAP"; 816 case DT_MIPS_DELTA_CLASS: 817 return "MIPS_DELTA_CLASS"; 818 case DT_MIPS_DELTA_CLASS_NO: 819 return "MIPS_DELTA_CLASS_NO"; 820 case DT_MIPS_DELTA_INSTANCE: 821 return "MIPS_DELTA_INSTANCE"; 822 case DT_MIPS_DELTA_INSTANCE_NO: 823 return "MIPS_DELTA_INSTANCE_NO"; 824 case DT_MIPS_DELTA_RELOC: 825 return "MIPS_DELTA_RELOC"; 826 case DT_MIPS_DELTA_RELOC_NO: 827 return "MIPS_DELTA_RELOC_NO"; 828 case DT_MIPS_DELTA_SYM: 829 return "MIPS_DELTA_SYM"; 830 case DT_MIPS_DELTA_SYM_NO: 831 return "MIPS_DELTA_SYM_NO"; 832 case DT_MIPS_DELTA_CLASSSYM: 833 return "MIPS_DELTA_CLASSSYM"; 834 case DT_MIPS_DELTA_CLASSSYM_NO: 835 return "MIPS_DELTA_CLASSSYM_NO"; 836 case DT_MIPS_CXX_FLAGS: 837 return "MIPS_CXX_FLAGS"; 838 case DT_MIPS_PIXIE_INIT: 839 return "MIPS_PIXIE_INIT"; 840 case DT_MIPS_SYMBOL_LIB: 841 return "MIPS_SYMBOL_LIB"; 842 case DT_MIPS_LOCALPAGE_GOTIDX: 843 return "MIPS_LOCALPAGE_GOTIDX"; 844 case DT_MIPS_LOCAL_GOTIDX: 845 return "MIPS_LOCAL_GOTIDX"; 846 case DT_MIPS_HIDDEN_GOTIDX: 847 return "MIPS_HIDDEN_GOTIDX"; 848 case DT_MIPS_PROTECTED_GOTIDX: 849 return "MIPS_PROTECTED_GOTIDX"; 850 case DT_MIPS_OPTIONS: 851 return "MIPS_OPTIONS"; 852 case DT_MIPS_INTERFACE: 853 return "MIPS_INTERFACE"; 854 case DT_MIPS_DYNSTR_ALIGN: 855 return "MIPS_DYNSTR_ALIGN"; 856 case DT_MIPS_INTERFACE_SIZE: 857 return "MIPS_INTERFACE_SIZE"; 858 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 859 return "MIPS_RLD_TEXT_RESOLVE_ADDR"; 860 case DT_MIPS_PERF_SUFFIX: 861 return "MIPS_PERF_SUFFIX"; 862 case DT_MIPS_COMPACT_SIZE: 863 return "MIPS_COMPACT_SIZE"; 864 case DT_MIPS_GP_VALUE: 865 return "MIPS_GP_VALUE"; 866 case DT_MIPS_AUX_DYNAMIC: 867 return "MIPS_AUX_DYNAMIC"; 868 case DT_MIPS_PLTGOT: 869 return "MIPS_PLTGOT"; 870 case DT_MIPS_RLD_OBJ_UPDATE: 871 return "MIPS_RLD_OBJ_UPDATE"; 872 case DT_MIPS_RWPLT: 873 return "MIPS_RWPLT"; 874 default: 875 break; 876 } 877 break; 878 case EM_SPARC: 879 case EM_SPARC32PLUS: 880 case EM_SPARCV9: 881 switch (dtype) { 882 case DT_SPARC_REGISTER: 883 return "DT_SPARC_REGISTER"; 884 default: 885 break; 886 } 887 break; 888 default: 889 break; 890 } 891 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype); 892 return (s_dtype); 893 } 894 895 switch (dtype) { 896 case DT_NULL: return "NULL"; 897 case DT_NEEDED: return "NEEDED"; 898 case DT_PLTRELSZ: return "PLTRELSZ"; 899 case DT_PLTGOT: return "PLTGOT"; 900 case DT_HASH: return "HASH"; 901 case DT_STRTAB: return "STRTAB"; 902 case DT_SYMTAB: return "SYMTAB"; 903 case DT_RELA: return "RELA"; 904 case DT_RELASZ: return "RELASZ"; 905 case DT_RELAENT: return "RELAENT"; 906 case DT_STRSZ: return "STRSZ"; 907 case DT_SYMENT: return "SYMENT"; 908 case DT_INIT: return "INIT"; 909 case DT_FINI: return "FINI"; 910 case DT_SONAME: return "SONAME"; 911 case DT_RPATH: return "RPATH"; 912 case DT_SYMBOLIC: return "SYMBOLIC"; 913 case DT_REL: return "REL"; 914 case DT_RELSZ: return "RELSZ"; 915 case DT_RELENT: return "RELENT"; 916 case DT_PLTREL: return "PLTREL"; 917 case DT_DEBUG: return "DEBUG"; 918 case DT_TEXTREL: return "TEXTREL"; 919 case DT_JMPREL: return "JMPREL"; 920 case DT_BIND_NOW: return "BIND_NOW"; 921 case DT_INIT_ARRAY: return "INIT_ARRAY"; 922 case DT_FINI_ARRAY: return "FINI_ARRAY"; 923 case DT_INIT_ARRAYSZ: return "INIT_ARRAYSZ"; 924 case DT_FINI_ARRAYSZ: return "FINI_ARRAYSZ"; 925 case DT_RUNPATH: return "RUNPATH"; 926 case DT_FLAGS: return "FLAGS"; 927 case DT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 928 case DT_PREINIT_ARRAYSZ: return "PREINIT_ARRAYSZ"; 929 case DT_MAXPOSTAGS: return "MAXPOSTAGS"; 930 case DT_SUNW_AUXILIARY: return "SUNW_AUXILIARY"; 931 case DT_SUNW_RTLDINF: return "SUNW_RTLDINF"; 932 case DT_SUNW_FILTER: return "SUNW_FILTER"; 933 case DT_SUNW_CAP: return "SUNW_CAP"; 934 case DT_CHECKSUM: return "CHECKSUM"; 935 case DT_PLTPADSZ: return "PLTPADSZ"; 936 case DT_MOVEENT: return "MOVEENT"; 937 case DT_MOVESZ: return "MOVESZ"; 938 case DT_FEATURE: return "FEATURE"; 939 case DT_POSFLAG_1: return "POSFLAG_1"; 940 case DT_SYMINSZ: return "SYMINSZ"; 941 case DT_SYMINENT: return "SYMINENT"; 942 case DT_GNU_HASH: return "GNU_HASH"; 943 case DT_TLSDESC_PLT: return "DT_TLSDESC_PLT"; 944 case DT_TLSDESC_GOT: return "DT_TLSDESC_GOT"; 945 case DT_GNU_CONFLICT: return "GNU_CONFLICT"; 946 case DT_GNU_LIBLIST: return "GNU_LIBLIST"; 947 case DT_CONFIG: return "CONFIG"; 948 case DT_DEPAUDIT: return "DEPAUDIT"; 949 case DT_AUDIT: return "AUDIT"; 950 case DT_PLTPAD: return "PLTPAD"; 951 case DT_MOVETAB: return "MOVETAB"; 952 case DT_SYMINFO: return "SYMINFO"; 953 case DT_VERSYM: return "VERSYM"; 954 case DT_RELACOUNT: return "RELACOUNT"; 955 case DT_RELCOUNT: return "RELCOUNT"; 956 case DT_FLAGS_1: return "FLAGS_1"; 957 case DT_VERDEF: return "VERDEF"; 958 case DT_VERDEFNUM: return "VERDEFNUM"; 959 case DT_VERNEED: return "VERNEED"; 960 case DT_VERNEEDNUM: return "VERNEEDNUM"; 961 case DT_AUXILIARY: return "AUXILIARY"; 962 case DT_USED: return "USED"; 963 case DT_FILTER: return "FILTER"; 964 case DT_GNU_PRELINKED: return "GNU_PRELINKED"; 965 case DT_GNU_CONFLICTSZ: return "GNU_CONFLICTSZ"; 966 case DT_GNU_LIBLISTSZ: return "GNU_LIBLISTSZ"; 967 default: 968 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype); 969 return (s_dtype); 970 } 971 } 972 973 static const char * 974 st_bind(unsigned int sbind) 975 { 976 static char s_sbind[32]; 977 978 switch (sbind) { 979 case STB_LOCAL: return "LOCAL"; 980 case STB_GLOBAL: return "GLOBAL"; 981 case STB_WEAK: return "WEAK"; 982 case STB_GNU_UNIQUE: return "UNIQUE"; 983 default: 984 if (sbind >= STB_LOOS && sbind <= STB_HIOS) 985 return "OS"; 986 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC) 987 return "PROC"; 988 else 989 snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>", 990 sbind); 991 return (s_sbind); 992 } 993 } 994 995 static const char * 996 st_type(unsigned int mach, unsigned int os, unsigned int stype) 997 { 998 static char s_stype[32]; 999 1000 switch (stype) { 1001 case STT_NOTYPE: return "NOTYPE"; 1002 case STT_OBJECT: return "OBJECT"; 1003 case STT_FUNC: return "FUNC"; 1004 case STT_SECTION: return "SECTION"; 1005 case STT_FILE: return "FILE"; 1006 case STT_COMMON: return "COMMON"; 1007 case STT_TLS: return "TLS"; 1008 default: 1009 if (stype >= STT_LOOS && stype <= STT_HIOS) { 1010 if ((os == ELFOSABI_GNU || os == ELFOSABI_FREEBSD) && 1011 stype == STT_GNU_IFUNC) 1012 return "IFUNC"; 1013 snprintf(s_stype, sizeof(s_stype), "OS+%#x", 1014 stype - STT_LOOS); 1015 } else if (stype >= STT_LOPROC && stype <= STT_HIPROC) { 1016 if (mach == EM_SPARCV9 && stype == STT_SPARC_REGISTER) 1017 return "REGISTER"; 1018 snprintf(s_stype, sizeof(s_stype), "PROC+%#x", 1019 stype - STT_LOPROC); 1020 } else 1021 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 1022 stype); 1023 return (s_stype); 1024 } 1025 } 1026 1027 static const char * 1028 st_vis(unsigned int svis) 1029 { 1030 static char s_svis[32]; 1031 1032 switch(svis) { 1033 case STV_DEFAULT: return "DEFAULT"; 1034 case STV_INTERNAL: return "INTERNAL"; 1035 case STV_HIDDEN: return "HIDDEN"; 1036 case STV_PROTECTED: return "PROTECTED"; 1037 default: 1038 snprintf(s_svis, sizeof(s_svis), "<unknown: %#x>", svis); 1039 return (s_svis); 1040 } 1041 } 1042 1043 static const char * 1044 st_shndx(unsigned int shndx) 1045 { 1046 static char s_shndx[32]; 1047 1048 switch (shndx) { 1049 case SHN_UNDEF: return "UND"; 1050 case SHN_ABS: return "ABS"; 1051 case SHN_COMMON: return "COM"; 1052 default: 1053 if (shndx >= SHN_LOPROC && shndx <= SHN_HIPROC) 1054 return "PRC"; 1055 else if (shndx >= SHN_LOOS && shndx <= SHN_HIOS) 1056 return "OS"; 1057 else 1058 snprintf(s_shndx, sizeof(s_shndx), "%u", shndx); 1059 return (s_shndx); 1060 } 1061 } 1062 1063 static struct { 1064 const char *ln; 1065 char sn; 1066 int value; 1067 } section_flag[] = { 1068 {"WRITE", 'W', SHF_WRITE}, 1069 {"ALLOC", 'A', SHF_ALLOC}, 1070 {"EXEC", 'X', SHF_EXECINSTR}, 1071 {"MERGE", 'M', SHF_MERGE}, 1072 {"STRINGS", 'S', SHF_STRINGS}, 1073 {"INFO LINK", 'I', SHF_INFO_LINK}, 1074 {"OS NONCONF", 'O', SHF_OS_NONCONFORMING}, 1075 {"GROUP", 'G', SHF_GROUP}, 1076 {"TLS", 'T', SHF_TLS}, 1077 {"COMPRESSED", 'C', SHF_COMPRESSED}, 1078 {NULL, 0, 0} 1079 }; 1080 1081 static const char * 1082 note_type(const char *name, unsigned int et, unsigned int nt) 1083 { 1084 if ((strcmp(name, "CORE") == 0 || strcmp(name, "LINUX") == 0) && 1085 et == ET_CORE) 1086 return note_type_linux_core(nt); 1087 else if (strcmp(name, "FreeBSD") == 0) 1088 if (et == ET_CORE) 1089 return note_type_freebsd_core(nt); 1090 else 1091 return note_type_freebsd(nt); 1092 else if (strcmp(name, "GNU") == 0 && et != ET_CORE) 1093 return note_type_gnu(nt); 1094 else if (strcmp(name, "NetBSD") == 0 && et != ET_CORE) 1095 return note_type_netbsd(nt); 1096 else if (strcmp(name, "OpenBSD") == 0 && et != ET_CORE) 1097 return note_type_openbsd(nt); 1098 else if (strcmp(name, "Xen") == 0 && et != ET_CORE) 1099 return note_type_xen(nt); 1100 return note_type_unknown(nt); 1101 } 1102 1103 static const char * 1104 note_type_freebsd(unsigned int nt) 1105 { 1106 switch (nt) { 1107 case 1: return "NT_FREEBSD_ABI_TAG"; 1108 case 2: return "NT_FREEBSD_NOINIT_TAG"; 1109 case 3: return "NT_FREEBSD_ARCH_TAG"; 1110 default: return (note_type_unknown(nt)); 1111 } 1112 } 1113 1114 static const char * 1115 note_type_freebsd_core(unsigned int nt) 1116 { 1117 switch (nt) { 1118 case 1: return "NT_PRSTATUS"; 1119 case 2: return "NT_FPREGSET"; 1120 case 3: return "NT_PRPSINFO"; 1121 case 7: return "NT_THRMISC"; 1122 case 8: return "NT_PROCSTAT_PROC"; 1123 case 9: return "NT_PROCSTAT_FILES"; 1124 case 10: return "NT_PROCSTAT_VMMAP"; 1125 case 11: return "NT_PROCSTAT_GROUPS"; 1126 case 12: return "NT_PROCSTAT_UMASK"; 1127 case 13: return "NT_PROCSTAT_RLIMIT"; 1128 case 14: return "NT_PROCSTAT_OSREL"; 1129 case 15: return "NT_PROCSTAT_PSSTRINGS"; 1130 case 16: return "NT_PROCSTAT_AUXV"; 1131 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1132 default: return (note_type_unknown(nt)); 1133 } 1134 } 1135 1136 static const char * 1137 note_type_linux_core(unsigned int nt) 1138 { 1139 switch (nt) { 1140 case 1: return "NT_PRSTATUS (Process status)"; 1141 case 2: return "NT_FPREGSET (Floating point information)"; 1142 case 3: return "NT_PRPSINFO (Process information)"; 1143 case 4: return "NT_TASKSTRUCT (Task structure)"; 1144 case 6: return "NT_AUXV (Auxiliary vector)"; 1145 case 10: return "NT_PSTATUS (Linux process status)"; 1146 case 12: return "NT_FPREGS (Linux floating point regset)"; 1147 case 13: return "NT_PSINFO (Linux process information)"; 1148 case 16: return "NT_LWPSTATUS (Linux lwpstatus_t type)"; 1149 case 17: return "NT_LWPSINFO (Linux lwpinfo_t type)"; 1150 case 18: return "NT_WIN32PSTATUS (win32_pstatus structure)"; 1151 case 0x100: return "NT_PPC_VMX (ppc Altivec registers)"; 1152 case 0x102: return "NT_PPC_VSX (ppc VSX registers)"; 1153 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1154 case 0x300: return "NT_S390_HIGH_GPRS (s390 upper register halves)"; 1155 case 0x301: return "NT_S390_TIMER (s390 timer register)"; 1156 case 0x302: return "NT_S390_TODCMP (s390 TOD comparator register)"; 1157 case 0x303: return "NT_S390_TODPREG (s390 TOD programmable register)"; 1158 case 0x304: return "NT_S390_CTRS (s390 control registers)"; 1159 case 0x305: return "NT_S390_PREFIX (s390 prefix register)"; 1160 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1161 case 0x46494c45UL: return "NT_FILE (mapped files)"; 1162 case 0x46E62B7FUL: return "NT_PRXFPREG (Linux user_xfpregs structure)"; 1163 case 0x53494749UL: return "NT_SIGINFO (siginfo_t data)"; 1164 default: return (note_type_unknown(nt)); 1165 } 1166 } 1167 1168 static const char * 1169 note_type_gnu(unsigned int nt) 1170 { 1171 switch (nt) { 1172 case 1: return "NT_GNU_ABI_TAG"; 1173 case 2: return "NT_GNU_HWCAP (Hardware capabilities)"; 1174 case 3: return "NT_GNU_BUILD_ID (Build id set by ld(1))"; 1175 case 4: return "NT_GNU_GOLD_VERSION (GNU gold version)"; 1176 default: return (note_type_unknown(nt)); 1177 } 1178 } 1179 1180 static const char * 1181 note_type_netbsd(unsigned int nt) 1182 { 1183 switch (nt) { 1184 case 1: return "NT_NETBSD_IDENT"; 1185 default: return (note_type_unknown(nt)); 1186 } 1187 } 1188 1189 static const char * 1190 note_type_openbsd(unsigned int nt) 1191 { 1192 switch (nt) { 1193 case 1: return "NT_OPENBSD_IDENT"; 1194 default: return (note_type_unknown(nt)); 1195 } 1196 } 1197 1198 static const char * 1199 note_type_unknown(unsigned int nt) 1200 { 1201 static char s_nt[32]; 1202 1203 snprintf(s_nt, sizeof(s_nt), 1204 nt >= 0x100 ? "<unknown: 0x%x>" : "<unknown: %u>", nt); 1205 return (s_nt); 1206 } 1207 1208 static const char * 1209 note_type_xen(unsigned int nt) 1210 { 1211 switch (nt) { 1212 case 0: return "XEN_ELFNOTE_INFO"; 1213 case 1: return "XEN_ELFNOTE_ENTRY"; 1214 case 2: return "XEN_ELFNOTE_HYPERCALL_PAGE"; 1215 case 3: return "XEN_ELFNOTE_VIRT_BASE"; 1216 case 4: return "XEN_ELFNOTE_PADDR_OFFSET"; 1217 case 5: return "XEN_ELFNOTE_XEN_VERSION"; 1218 case 6: return "XEN_ELFNOTE_GUEST_OS"; 1219 case 7: return "XEN_ELFNOTE_GUEST_VERSION"; 1220 case 8: return "XEN_ELFNOTE_LOADER"; 1221 case 9: return "XEN_ELFNOTE_PAE_MODE"; 1222 case 10: return "XEN_ELFNOTE_FEATURES"; 1223 case 11: return "XEN_ELFNOTE_BSD_SYMTAB"; 1224 case 12: return "XEN_ELFNOTE_HV_START_LOW"; 1225 case 13: return "XEN_ELFNOTE_L1_MFN_VALID"; 1226 case 14: return "XEN_ELFNOTE_SUSPEND_CANCEL"; 1227 case 15: return "XEN_ELFNOTE_INIT_P2M"; 1228 case 16: return "XEN_ELFNOTE_MOD_START_PFN"; 1229 case 17: return "XEN_ELFNOTE_SUPPORTED_FEATURES"; 1230 default: return (note_type_unknown(nt)); 1231 } 1232 } 1233 1234 static struct { 1235 const char *name; 1236 int value; 1237 } l_flag[] = { 1238 {"EXACT_MATCH", LL_EXACT_MATCH}, 1239 {"IGNORE_INT_VER", LL_IGNORE_INT_VER}, 1240 {"REQUIRE_MINOR", LL_REQUIRE_MINOR}, 1241 {"EXPORTS", LL_EXPORTS}, 1242 {"DELAY_LOAD", LL_DELAY_LOAD}, 1243 {"DELTA", LL_DELTA}, 1244 {NULL, 0} 1245 }; 1246 1247 static struct mips_option mips_exceptions_option[] = { 1248 {OEX_PAGE0, "PAGE0"}, 1249 {OEX_SMM, "SMM"}, 1250 {OEX_PRECISEFP, "PRECISEFP"}, 1251 {OEX_DISMISS, "DISMISS"}, 1252 {0, NULL} 1253 }; 1254 1255 static struct mips_option mips_pad_option[] = { 1256 {OPAD_PREFIX, "PREFIX"}, 1257 {OPAD_POSTFIX, "POSTFIX"}, 1258 {OPAD_SYMBOL, "SYMBOL"}, 1259 {0, NULL} 1260 }; 1261 1262 static struct mips_option mips_hwpatch_option[] = { 1263 {OHW_R4KEOP, "R4KEOP"}, 1264 {OHW_R8KPFETCH, "R8KPFETCH"}, 1265 {OHW_R5KEOP, "R5KEOP"}, 1266 {OHW_R5KCVTL, "R5KCVTL"}, 1267 {0, NULL} 1268 }; 1269 1270 static struct mips_option mips_hwa_option[] = { 1271 {OHWA0_R4KEOP_CHECKED, "R4KEOP_CHECKED"}, 1272 {OHWA0_R4KEOP_CLEAN, "R4KEOP_CLEAN"}, 1273 {0, NULL} 1274 }; 1275 1276 static struct mips_option mips_hwo_option[] = { 1277 {OHWO0_FIXADE, "FIXADE"}, 1278 {0, NULL} 1279 }; 1280 1281 static const char * 1282 option_kind(uint8_t kind) 1283 { 1284 static char s_kind[32]; 1285 1286 switch (kind) { 1287 case ODK_NULL: return "NULL"; 1288 case ODK_REGINFO: return "REGINFO"; 1289 case ODK_EXCEPTIONS: return "EXCEPTIONS"; 1290 case ODK_PAD: return "PAD"; 1291 case ODK_HWPATCH: return "HWPATCH"; 1292 case ODK_FILL: return "FILL"; 1293 case ODK_TAGS: return "TAGS"; 1294 case ODK_HWAND: return "HWAND"; 1295 case ODK_HWOR: return "HWOR"; 1296 case ODK_GP_GROUP: return "GP_GROUP"; 1297 case ODK_IDENT: return "IDENT"; 1298 default: 1299 snprintf(s_kind, sizeof(s_kind), "<unknown: %u>", kind); 1300 return (s_kind); 1301 } 1302 } 1303 1304 static const char * 1305 top_tag(unsigned int tag) 1306 { 1307 static char s_top_tag[32]; 1308 1309 switch (tag) { 1310 case 1: return "File Attributes"; 1311 case 2: return "Section Attributes"; 1312 case 3: return "Symbol Attributes"; 1313 default: 1314 snprintf(s_top_tag, sizeof(s_top_tag), "Unknown tag: %u", tag); 1315 return (s_top_tag); 1316 } 1317 } 1318 1319 static const char * 1320 aeabi_cpu_arch(uint64_t arch) 1321 { 1322 static char s_cpu_arch[32]; 1323 1324 switch (arch) { 1325 case 0: return "Pre-V4"; 1326 case 1: return "ARM v4"; 1327 case 2: return "ARM v4T"; 1328 case 3: return "ARM v5T"; 1329 case 4: return "ARM v5TE"; 1330 case 5: return "ARM v5TEJ"; 1331 case 6: return "ARM v6"; 1332 case 7: return "ARM v6KZ"; 1333 case 8: return "ARM v6T2"; 1334 case 9: return "ARM v6K"; 1335 case 10: return "ARM v7"; 1336 case 11: return "ARM v6-M"; 1337 case 12: return "ARM v6S-M"; 1338 case 13: return "ARM v7E-M"; 1339 default: 1340 snprintf(s_cpu_arch, sizeof(s_cpu_arch), 1341 "Unknown (%ju)", (uintmax_t) arch); 1342 return (s_cpu_arch); 1343 } 1344 } 1345 1346 static const char * 1347 aeabi_cpu_arch_profile(uint64_t pf) 1348 { 1349 static char s_arch_profile[32]; 1350 1351 switch (pf) { 1352 case 0: 1353 return "Not applicable"; 1354 case 0x41: /* 'A' */ 1355 return "Application Profile"; 1356 case 0x52: /* 'R' */ 1357 return "Real-Time Profile"; 1358 case 0x4D: /* 'M' */ 1359 return "Microcontroller Profile"; 1360 case 0x53: /* 'S' */ 1361 return "Application or Real-Time Profile"; 1362 default: 1363 snprintf(s_arch_profile, sizeof(s_arch_profile), 1364 "Unknown (%ju)\n", (uintmax_t) pf); 1365 return (s_arch_profile); 1366 } 1367 } 1368 1369 static const char * 1370 aeabi_arm_isa(uint64_t ai) 1371 { 1372 static char s_ai[32]; 1373 1374 switch (ai) { 1375 case 0: return "No"; 1376 case 1: return "Yes"; 1377 default: 1378 snprintf(s_ai, sizeof(s_ai), "Unknown (%ju)\n", 1379 (uintmax_t) ai); 1380 return (s_ai); 1381 } 1382 } 1383 1384 static const char * 1385 aeabi_thumb_isa(uint64_t ti) 1386 { 1387 static char s_ti[32]; 1388 1389 switch (ti) { 1390 case 0: return "No"; 1391 case 1: return "16-bit Thumb"; 1392 case 2: return "32-bit Thumb"; 1393 default: 1394 snprintf(s_ti, sizeof(s_ti), "Unknown (%ju)\n", 1395 (uintmax_t) ti); 1396 return (s_ti); 1397 } 1398 } 1399 1400 static const char * 1401 aeabi_fp_arch(uint64_t fp) 1402 { 1403 static char s_fp_arch[32]; 1404 1405 switch (fp) { 1406 case 0: return "No"; 1407 case 1: return "VFPv1"; 1408 case 2: return "VFPv2"; 1409 case 3: return "VFPv3"; 1410 case 4: return "VFPv3-D16"; 1411 case 5: return "VFPv4"; 1412 case 6: return "VFPv4-D16"; 1413 default: 1414 snprintf(s_fp_arch, sizeof(s_fp_arch), "Unknown (%ju)", 1415 (uintmax_t) fp); 1416 return (s_fp_arch); 1417 } 1418 } 1419 1420 static const char * 1421 aeabi_wmmx_arch(uint64_t wmmx) 1422 { 1423 static char s_wmmx[32]; 1424 1425 switch (wmmx) { 1426 case 0: return "No"; 1427 case 1: return "WMMXv1"; 1428 case 2: return "WMMXv2"; 1429 default: 1430 snprintf(s_wmmx, sizeof(s_wmmx), "Unknown (%ju)", 1431 (uintmax_t) wmmx); 1432 return (s_wmmx); 1433 } 1434 } 1435 1436 static const char * 1437 aeabi_adv_simd_arch(uint64_t simd) 1438 { 1439 static char s_simd[32]; 1440 1441 switch (simd) { 1442 case 0: return "No"; 1443 case 1: return "NEONv1"; 1444 case 2: return "NEONv2"; 1445 default: 1446 snprintf(s_simd, sizeof(s_simd), "Unknown (%ju)", 1447 (uintmax_t) simd); 1448 return (s_simd); 1449 } 1450 } 1451 1452 static const char * 1453 aeabi_pcs_config(uint64_t pcs) 1454 { 1455 static char s_pcs[32]; 1456 1457 switch (pcs) { 1458 case 0: return "None"; 1459 case 1: return "Bare platform"; 1460 case 2: return "Linux"; 1461 case 3: return "Linux DSO"; 1462 case 4: return "Palm OS 2004"; 1463 case 5: return "Palm OS (future)"; 1464 case 6: return "Symbian OS 2004"; 1465 case 7: return "Symbian OS (future)"; 1466 default: 1467 snprintf(s_pcs, sizeof(s_pcs), "Unknown (%ju)", 1468 (uintmax_t) pcs); 1469 return (s_pcs); 1470 } 1471 } 1472 1473 static const char * 1474 aeabi_pcs_r9(uint64_t r9) 1475 { 1476 static char s_r9[32]; 1477 1478 switch (r9) { 1479 case 0: return "V6"; 1480 case 1: return "SB"; 1481 case 2: return "TLS pointer"; 1482 case 3: return "Unused"; 1483 default: 1484 snprintf(s_r9, sizeof(s_r9), "Unknown (%ju)", (uintmax_t) r9); 1485 return (s_r9); 1486 } 1487 } 1488 1489 static const char * 1490 aeabi_pcs_rw(uint64_t rw) 1491 { 1492 static char s_rw[32]; 1493 1494 switch (rw) { 1495 case 0: return "Absolute"; 1496 case 1: return "PC-relative"; 1497 case 2: return "SB-relative"; 1498 case 3: return "None"; 1499 default: 1500 snprintf(s_rw, sizeof(s_rw), "Unknown (%ju)", (uintmax_t) rw); 1501 return (s_rw); 1502 } 1503 } 1504 1505 static const char * 1506 aeabi_pcs_ro(uint64_t ro) 1507 { 1508 static char s_ro[32]; 1509 1510 switch (ro) { 1511 case 0: return "Absolute"; 1512 case 1: return "PC-relative"; 1513 case 2: return "None"; 1514 default: 1515 snprintf(s_ro, sizeof(s_ro), "Unknown (%ju)", (uintmax_t) ro); 1516 return (s_ro); 1517 } 1518 } 1519 1520 static const char * 1521 aeabi_pcs_got(uint64_t got) 1522 { 1523 static char s_got[32]; 1524 1525 switch (got) { 1526 case 0: return "None"; 1527 case 1: return "direct"; 1528 case 2: return "indirect via GOT"; 1529 default: 1530 snprintf(s_got, sizeof(s_got), "Unknown (%ju)", 1531 (uintmax_t) got); 1532 return (s_got); 1533 } 1534 } 1535 1536 static const char * 1537 aeabi_pcs_wchar_t(uint64_t wt) 1538 { 1539 static char s_wt[32]; 1540 1541 switch (wt) { 1542 case 0: return "None"; 1543 case 2: return "wchar_t size 2"; 1544 case 4: return "wchar_t size 4"; 1545 default: 1546 snprintf(s_wt, sizeof(s_wt), "Unknown (%ju)", (uintmax_t) wt); 1547 return (s_wt); 1548 } 1549 } 1550 1551 static const char * 1552 aeabi_enum_size(uint64_t es) 1553 { 1554 static char s_es[32]; 1555 1556 switch (es) { 1557 case 0: return "None"; 1558 case 1: return "smallest"; 1559 case 2: return "32-bit"; 1560 case 3: return "visible 32-bit"; 1561 default: 1562 snprintf(s_es, sizeof(s_es), "Unknown (%ju)", (uintmax_t) es); 1563 return (s_es); 1564 } 1565 } 1566 1567 static const char * 1568 aeabi_align_needed(uint64_t an) 1569 { 1570 static char s_align_n[64]; 1571 1572 switch (an) { 1573 case 0: return "No"; 1574 case 1: return "8-byte align"; 1575 case 2: return "4-byte align"; 1576 case 3: return "Reserved"; 1577 default: 1578 if (an >= 4 && an <= 12) 1579 snprintf(s_align_n, sizeof(s_align_n), "8-byte align" 1580 " and up to 2^%ju-byte extended align", 1581 (uintmax_t) an); 1582 else 1583 snprintf(s_align_n, sizeof(s_align_n), "Unknown (%ju)", 1584 (uintmax_t) an); 1585 return (s_align_n); 1586 } 1587 } 1588 1589 static const char * 1590 aeabi_align_preserved(uint64_t ap) 1591 { 1592 static char s_align_p[128]; 1593 1594 switch (ap) { 1595 case 0: return "No"; 1596 case 1: return "8-byte align"; 1597 case 2: return "8-byte align and SP % 8 == 0"; 1598 case 3: return "Reserved"; 1599 default: 1600 if (ap >= 4 && ap <= 12) 1601 snprintf(s_align_p, sizeof(s_align_p), "8-byte align" 1602 " and SP %% 8 == 0 and up to 2^%ju-byte extended" 1603 " align", (uintmax_t) ap); 1604 else 1605 snprintf(s_align_p, sizeof(s_align_p), "Unknown (%ju)", 1606 (uintmax_t) ap); 1607 return (s_align_p); 1608 } 1609 } 1610 1611 static const char * 1612 aeabi_fp_rounding(uint64_t fr) 1613 { 1614 static char s_fp_r[32]; 1615 1616 switch (fr) { 1617 case 0: return "Unused"; 1618 case 1: return "Needed"; 1619 default: 1620 snprintf(s_fp_r, sizeof(s_fp_r), "Unknown (%ju)", 1621 (uintmax_t) fr); 1622 return (s_fp_r); 1623 } 1624 } 1625 1626 static const char * 1627 aeabi_fp_denormal(uint64_t fd) 1628 { 1629 static char s_fp_d[32]; 1630 1631 switch (fd) { 1632 case 0: return "Unused"; 1633 case 1: return "Needed"; 1634 case 2: return "Sign Only"; 1635 default: 1636 snprintf(s_fp_d, sizeof(s_fp_d), "Unknown (%ju)", 1637 (uintmax_t) fd); 1638 return (s_fp_d); 1639 } 1640 } 1641 1642 static const char * 1643 aeabi_fp_exceptions(uint64_t fe) 1644 { 1645 static char s_fp_e[32]; 1646 1647 switch (fe) { 1648 case 0: return "Unused"; 1649 case 1: return "Needed"; 1650 default: 1651 snprintf(s_fp_e, sizeof(s_fp_e), "Unknown (%ju)", 1652 (uintmax_t) fe); 1653 return (s_fp_e); 1654 } 1655 } 1656 1657 static const char * 1658 aeabi_fp_user_exceptions(uint64_t fu) 1659 { 1660 static char s_fp_u[32]; 1661 1662 switch (fu) { 1663 case 0: return "Unused"; 1664 case 1: return "Needed"; 1665 default: 1666 snprintf(s_fp_u, sizeof(s_fp_u), "Unknown (%ju)", 1667 (uintmax_t) fu); 1668 return (s_fp_u); 1669 } 1670 } 1671 1672 static const char * 1673 aeabi_fp_number_model(uint64_t fn) 1674 { 1675 static char s_fp_n[32]; 1676 1677 switch (fn) { 1678 case 0: return "Unused"; 1679 case 1: return "IEEE 754 normal"; 1680 case 2: return "RTABI"; 1681 case 3: return "IEEE 754"; 1682 default: 1683 snprintf(s_fp_n, sizeof(s_fp_n), "Unknown (%ju)", 1684 (uintmax_t) fn); 1685 return (s_fp_n); 1686 } 1687 } 1688 1689 static const char * 1690 aeabi_fp_16bit_format(uint64_t fp16) 1691 { 1692 static char s_fp_16[64]; 1693 1694 switch (fp16) { 1695 case 0: return "None"; 1696 case 1: return "IEEE 754"; 1697 case 2: return "VFPv3/Advanced SIMD (alternative format)"; 1698 default: 1699 snprintf(s_fp_16, sizeof(s_fp_16), "Unknown (%ju)", 1700 (uintmax_t) fp16); 1701 return (s_fp_16); 1702 } 1703 } 1704 1705 static const char * 1706 aeabi_mpext(uint64_t mp) 1707 { 1708 static char s_mp[32]; 1709 1710 switch (mp) { 1711 case 0: return "Not allowed"; 1712 case 1: return "Allowed"; 1713 default: 1714 snprintf(s_mp, sizeof(s_mp), "Unknown (%ju)", 1715 (uintmax_t) mp); 1716 return (s_mp); 1717 } 1718 } 1719 1720 static const char * 1721 aeabi_div(uint64_t du) 1722 { 1723 static char s_du[32]; 1724 1725 switch (du) { 1726 case 0: return "Yes (V7-R/V7-M)"; 1727 case 1: return "No"; 1728 case 2: return "Yes (V7-A)"; 1729 default: 1730 snprintf(s_du, sizeof(s_du), "Unknown (%ju)", 1731 (uintmax_t) du); 1732 return (s_du); 1733 } 1734 } 1735 1736 static const char * 1737 aeabi_t2ee(uint64_t t2ee) 1738 { 1739 static char s_t2ee[32]; 1740 1741 switch (t2ee) { 1742 case 0: return "Not allowed"; 1743 case 1: return "Allowed"; 1744 default: 1745 snprintf(s_t2ee, sizeof(s_t2ee), "Unknown(%ju)", 1746 (uintmax_t) t2ee); 1747 return (s_t2ee); 1748 } 1749 1750 } 1751 1752 static const char * 1753 aeabi_hardfp(uint64_t hfp) 1754 { 1755 static char s_hfp[32]; 1756 1757 switch (hfp) { 1758 case 0: return "Tag_FP_arch"; 1759 case 1: return "only SP"; 1760 case 2: return "only DP"; 1761 case 3: return "both SP and DP"; 1762 default: 1763 snprintf(s_hfp, sizeof(s_hfp), "Unknown (%ju)", 1764 (uintmax_t) hfp); 1765 return (s_hfp); 1766 } 1767 } 1768 1769 static const char * 1770 aeabi_vfp_args(uint64_t va) 1771 { 1772 static char s_va[32]; 1773 1774 switch (va) { 1775 case 0: return "AAPCS (base variant)"; 1776 case 1: return "AAPCS (VFP variant)"; 1777 case 2: return "toolchain-specific"; 1778 default: 1779 snprintf(s_va, sizeof(s_va), "Unknown (%ju)", (uintmax_t) va); 1780 return (s_va); 1781 } 1782 } 1783 1784 static const char * 1785 aeabi_wmmx_args(uint64_t wa) 1786 { 1787 static char s_wa[32]; 1788 1789 switch (wa) { 1790 case 0: return "AAPCS (base variant)"; 1791 case 1: return "Intel WMMX"; 1792 case 2: return "toolchain-specific"; 1793 default: 1794 snprintf(s_wa, sizeof(s_wa), "Unknown(%ju)", (uintmax_t) wa); 1795 return (s_wa); 1796 } 1797 } 1798 1799 static const char * 1800 aeabi_unaligned_access(uint64_t ua) 1801 { 1802 static char s_ua[32]; 1803 1804 switch (ua) { 1805 case 0: return "Not allowed"; 1806 case 1: return "Allowed"; 1807 default: 1808 snprintf(s_ua, sizeof(s_ua), "Unknown(%ju)", (uintmax_t) ua); 1809 return (s_ua); 1810 } 1811 } 1812 1813 static const char * 1814 aeabi_fp_hpext(uint64_t fh) 1815 { 1816 static char s_fh[32]; 1817 1818 switch (fh) { 1819 case 0: return "Not allowed"; 1820 case 1: return "Allowed"; 1821 default: 1822 snprintf(s_fh, sizeof(s_fh), "Unknown(%ju)", (uintmax_t) fh); 1823 return (s_fh); 1824 } 1825 } 1826 1827 static const char * 1828 aeabi_optm_goal(uint64_t og) 1829 { 1830 static char s_og[32]; 1831 1832 switch (og) { 1833 case 0: return "None"; 1834 case 1: return "Speed"; 1835 case 2: return "Speed aggressive"; 1836 case 3: return "Space"; 1837 case 4: return "Space aggressive"; 1838 case 5: return "Debugging"; 1839 case 6: return "Best Debugging"; 1840 default: 1841 snprintf(s_og, sizeof(s_og), "Unknown(%ju)", (uintmax_t) og); 1842 return (s_og); 1843 } 1844 } 1845 1846 static const char * 1847 aeabi_fp_optm_goal(uint64_t fog) 1848 { 1849 static char s_fog[32]; 1850 1851 switch (fog) { 1852 case 0: return "None"; 1853 case 1: return "Speed"; 1854 case 2: return "Speed aggressive"; 1855 case 3: return "Space"; 1856 case 4: return "Space aggressive"; 1857 case 5: return "Accurary"; 1858 case 6: return "Best Accurary"; 1859 default: 1860 snprintf(s_fog, sizeof(s_fog), "Unknown(%ju)", 1861 (uintmax_t) fog); 1862 return (s_fog); 1863 } 1864 } 1865 1866 static const char * 1867 aeabi_virtual(uint64_t vt) 1868 { 1869 static char s_virtual[64]; 1870 1871 switch (vt) { 1872 case 0: return "No"; 1873 case 1: return "TrustZone"; 1874 case 2: return "Virtualization extension"; 1875 case 3: return "TrustZone and virtualization extension"; 1876 default: 1877 snprintf(s_virtual, sizeof(s_virtual), "Unknown(%ju)", 1878 (uintmax_t) vt); 1879 return (s_virtual); 1880 } 1881 } 1882 1883 static struct { 1884 uint64_t tag; 1885 const char *s_tag; 1886 const char *(*get_desc)(uint64_t val); 1887 } aeabi_tags[] = { 1888 {4, "Tag_CPU_raw_name", NULL}, 1889 {5, "Tag_CPU_name", NULL}, 1890 {6, "Tag_CPU_arch", aeabi_cpu_arch}, 1891 {7, "Tag_CPU_arch_profile", aeabi_cpu_arch_profile}, 1892 {8, "Tag_ARM_ISA_use", aeabi_arm_isa}, 1893 {9, "Tag_THUMB_ISA_use", aeabi_thumb_isa}, 1894 {10, "Tag_FP_arch", aeabi_fp_arch}, 1895 {11, "Tag_WMMX_arch", aeabi_wmmx_arch}, 1896 {12, "Tag_Advanced_SIMD_arch", aeabi_adv_simd_arch}, 1897 {13, "Tag_PCS_config", aeabi_pcs_config}, 1898 {14, "Tag_ABI_PCS_R9_use", aeabi_pcs_r9}, 1899 {15, "Tag_ABI_PCS_RW_data", aeabi_pcs_rw}, 1900 {16, "Tag_ABI_PCS_RO_data", aeabi_pcs_ro}, 1901 {17, "Tag_ABI_PCS_GOT_use", aeabi_pcs_got}, 1902 {18, "Tag_ABI_PCS_wchar_t", aeabi_pcs_wchar_t}, 1903 {19, "Tag_ABI_FP_rounding", aeabi_fp_rounding}, 1904 {20, "Tag_ABI_FP_denormal", aeabi_fp_denormal}, 1905 {21, "Tag_ABI_FP_exceptions", aeabi_fp_exceptions}, 1906 {22, "Tag_ABI_FP_user_exceptions", aeabi_fp_user_exceptions}, 1907 {23, "Tag_ABI_FP_number_model", aeabi_fp_number_model}, 1908 {24, "Tag_ABI_align_needed", aeabi_align_needed}, 1909 {25, "Tag_ABI_align_preserved", aeabi_align_preserved}, 1910 {26, "Tag_ABI_enum_size", aeabi_enum_size}, 1911 {27, "Tag_ABI_HardFP_use", aeabi_hardfp}, 1912 {28, "Tag_ABI_VFP_args", aeabi_vfp_args}, 1913 {29, "Tag_ABI_WMMX_args", aeabi_wmmx_args}, 1914 {30, "Tag_ABI_optimization_goals", aeabi_optm_goal}, 1915 {31, "Tag_ABI_FP_optimization_goals", aeabi_fp_optm_goal}, 1916 {32, "Tag_compatibility", NULL}, 1917 {34, "Tag_CPU_unaligned_access", aeabi_unaligned_access}, 1918 {36, "Tag_FP_HP_extension", aeabi_fp_hpext}, 1919 {38, "Tag_ABI_FP_16bit_format", aeabi_fp_16bit_format}, 1920 {42, "Tag_MPextension_use", aeabi_mpext}, 1921 {44, "Tag_DIV_use", aeabi_div}, 1922 {64, "Tag_nodefaults", NULL}, 1923 {65, "Tag_also_compatible_with", NULL}, 1924 {66, "Tag_T2EE_use", aeabi_t2ee}, 1925 {67, "Tag_conformance", NULL}, 1926 {68, "Tag_Virtualization_use", aeabi_virtual}, 1927 {70, "Tag_MPextension_use", aeabi_mpext}, 1928 }; 1929 1930 static const char * 1931 mips_abi_fp(uint64_t fp) 1932 { 1933 static char s_mips_abi_fp[64]; 1934 1935 switch (fp) { 1936 case 0: return "N/A"; 1937 case 1: return "Hard float (double precision)"; 1938 case 2: return "Hard float (single precision)"; 1939 case 3: return "Soft float"; 1940 case 4: return "64-bit float (-mips32r2 -mfp64)"; 1941 default: 1942 snprintf(s_mips_abi_fp, sizeof(s_mips_abi_fp), "Unknown(%ju)", 1943 (uintmax_t) fp); 1944 return (s_mips_abi_fp); 1945 } 1946 } 1947 1948 static const char * 1949 ppc_abi_fp(uint64_t fp) 1950 { 1951 static char s_ppc_abi_fp[64]; 1952 1953 switch (fp) { 1954 case 0: return "N/A"; 1955 case 1: return "Hard float (double precision)"; 1956 case 2: return "Soft float"; 1957 case 3: return "Hard float (single precision)"; 1958 default: 1959 snprintf(s_ppc_abi_fp, sizeof(s_ppc_abi_fp), "Unknown(%ju)", 1960 (uintmax_t) fp); 1961 return (s_ppc_abi_fp); 1962 } 1963 } 1964 1965 static const char * 1966 ppc_abi_vector(uint64_t vec) 1967 { 1968 static char s_vec[64]; 1969 1970 switch (vec) { 1971 case 0: return "N/A"; 1972 case 1: return "Generic purpose registers"; 1973 case 2: return "AltiVec registers"; 1974 case 3: return "SPE registers"; 1975 default: 1976 snprintf(s_vec, sizeof(s_vec), "Unknown(%ju)", (uintmax_t) vec); 1977 return (s_vec); 1978 } 1979 } 1980 1981 static const char * 1982 dwarf_reg(unsigned int mach, unsigned int reg) 1983 { 1984 1985 switch (mach) { 1986 case EM_386: 1987 case EM_IAMCU: 1988 switch (reg) { 1989 case 0: return "eax"; 1990 case 1: return "ecx"; 1991 case 2: return "edx"; 1992 case 3: return "ebx"; 1993 case 4: return "esp"; 1994 case 5: return "ebp"; 1995 case 6: return "esi"; 1996 case 7: return "edi"; 1997 case 8: return "eip"; 1998 case 9: return "eflags"; 1999 case 11: return "st0"; 2000 case 12: return "st1"; 2001 case 13: return "st2"; 2002 case 14: return "st3"; 2003 case 15: return "st4"; 2004 case 16: return "st5"; 2005 case 17: return "st6"; 2006 case 18: return "st7"; 2007 case 21: return "xmm0"; 2008 case 22: return "xmm1"; 2009 case 23: return "xmm2"; 2010 case 24: return "xmm3"; 2011 case 25: return "xmm4"; 2012 case 26: return "xmm5"; 2013 case 27: return "xmm6"; 2014 case 28: return "xmm7"; 2015 case 29: return "mm0"; 2016 case 30: return "mm1"; 2017 case 31: return "mm2"; 2018 case 32: return "mm3"; 2019 case 33: return "mm4"; 2020 case 34: return "mm5"; 2021 case 35: return "mm6"; 2022 case 36: return "mm7"; 2023 case 37: return "fcw"; 2024 case 38: return "fsw"; 2025 case 39: return "mxcsr"; 2026 case 40: return "es"; 2027 case 41: return "cs"; 2028 case 42: return "ss"; 2029 case 43: return "ds"; 2030 case 44: return "fs"; 2031 case 45: return "gs"; 2032 case 48: return "tr"; 2033 case 49: return "ldtr"; 2034 default: return (NULL); 2035 } 2036 case EM_X86_64: 2037 switch (reg) { 2038 case 0: return "rax"; 2039 case 1: return "rdx"; 2040 case 2: return "rcx"; 2041 case 3: return "rbx"; 2042 case 4: return "rsi"; 2043 case 5: return "rdi"; 2044 case 6: return "rbp"; 2045 case 7: return "rsp"; 2046 case 16: return "rip"; 2047 case 17: return "xmm0"; 2048 case 18: return "xmm1"; 2049 case 19: return "xmm2"; 2050 case 20: return "xmm3"; 2051 case 21: return "xmm4"; 2052 case 22: return "xmm5"; 2053 case 23: return "xmm6"; 2054 case 24: return "xmm7"; 2055 case 25: return "xmm8"; 2056 case 26: return "xmm9"; 2057 case 27: return "xmm10"; 2058 case 28: return "xmm11"; 2059 case 29: return "xmm12"; 2060 case 30: return "xmm13"; 2061 case 31: return "xmm14"; 2062 case 32: return "xmm15"; 2063 case 33: return "st0"; 2064 case 34: return "st1"; 2065 case 35: return "st2"; 2066 case 36: return "st3"; 2067 case 37: return "st4"; 2068 case 38: return "st5"; 2069 case 39: return "st6"; 2070 case 40: return "st7"; 2071 case 41: return "mm0"; 2072 case 42: return "mm1"; 2073 case 43: return "mm2"; 2074 case 44: return "mm3"; 2075 case 45: return "mm4"; 2076 case 46: return "mm5"; 2077 case 47: return "mm6"; 2078 case 48: return "mm7"; 2079 case 49: return "rflags"; 2080 case 50: return "es"; 2081 case 51: return "cs"; 2082 case 52: return "ss"; 2083 case 53: return "ds"; 2084 case 54: return "fs"; 2085 case 55: return "gs"; 2086 case 58: return "fs.base"; 2087 case 59: return "gs.base"; 2088 case 62: return "tr"; 2089 case 63: return "ldtr"; 2090 case 64: return "mxcsr"; 2091 case 65: return "fcw"; 2092 case 66: return "fsw"; 2093 default: return (NULL); 2094 } 2095 default: 2096 return (NULL); 2097 } 2098 } 2099 2100 static void 2101 dump_ehdr(struct readelf *re) 2102 { 2103 size_t shnum, shstrndx; 2104 int i; 2105 2106 printf("ELF Header:\n"); 2107 2108 /* e_ident[]. */ 2109 printf(" Magic: "); 2110 for (i = 0; i < EI_NIDENT; i++) 2111 printf("%.2x ", re->ehdr.e_ident[i]); 2112 putchar('\n'); 2113 2114 /* EI_CLASS. */ 2115 printf("%-37s%s\n", " Class:", elf_class(re->ehdr.e_ident[EI_CLASS])); 2116 2117 /* EI_DATA. */ 2118 printf("%-37s%s\n", " Data:", elf_endian(re->ehdr.e_ident[EI_DATA])); 2119 2120 /* EI_VERSION. */ 2121 printf("%-37s%d %s\n", " Version:", re->ehdr.e_ident[EI_VERSION], 2122 elf_ver(re->ehdr.e_ident[EI_VERSION])); 2123 2124 /* EI_OSABI. */ 2125 printf("%-37s%s\n", " OS/ABI:", elf_osabi(re->ehdr.e_ident[EI_OSABI])); 2126 2127 /* EI_ABIVERSION. */ 2128 printf("%-37s%d\n", " ABI Version:", re->ehdr.e_ident[EI_ABIVERSION]); 2129 2130 /* e_type. */ 2131 printf("%-37s%s\n", " Type:", elf_type(re->ehdr.e_type)); 2132 2133 /* e_machine. */ 2134 printf("%-37s%s\n", " Machine:", elf_machine(re->ehdr.e_machine)); 2135 2136 /* e_version. */ 2137 printf("%-37s%#x\n", " Version:", re->ehdr.e_version); 2138 2139 /* e_entry. */ 2140 printf("%-37s%#jx\n", " Entry point address:", 2141 (uintmax_t)re->ehdr.e_entry); 2142 2143 /* e_phoff. */ 2144 printf("%-37s%ju (bytes into file)\n", " Start of program headers:", 2145 (uintmax_t)re->ehdr.e_phoff); 2146 2147 /* e_shoff. */ 2148 printf("%-37s%ju (bytes into file)\n", " Start of section headers:", 2149 (uintmax_t)re->ehdr.e_shoff); 2150 2151 /* e_flags. */ 2152 printf("%-37s%#x", " Flags:", re->ehdr.e_flags); 2153 dump_eflags(re, re->ehdr.e_flags); 2154 putchar('\n'); 2155 2156 /* e_ehsize. */ 2157 printf("%-37s%u (bytes)\n", " Size of this header:", 2158 re->ehdr.e_ehsize); 2159 2160 /* e_phentsize. */ 2161 printf("%-37s%u (bytes)\n", " Size of program headers:", 2162 re->ehdr.e_phentsize); 2163 2164 /* e_phnum. */ 2165 printf("%-37s%u\n", " Number of program headers:", re->ehdr.e_phnum); 2166 2167 /* e_shentsize. */ 2168 printf("%-37s%u (bytes)\n", " Size of section headers:", 2169 re->ehdr.e_shentsize); 2170 2171 /* e_shnum. */ 2172 printf("%-37s%u", " Number of section headers:", re->ehdr.e_shnum); 2173 if (re->ehdr.e_shnum == SHN_UNDEF) { 2174 /* Extended section numbering is in use. */ 2175 if (elf_getshnum(re->elf, &shnum)) 2176 printf(" (%ju)", (uintmax_t)shnum); 2177 } 2178 putchar('\n'); 2179 2180 /* e_shstrndx. */ 2181 printf("%-37s%u", " Section header string table index:", 2182 re->ehdr.e_shstrndx); 2183 if (re->ehdr.e_shstrndx == SHN_XINDEX) { 2184 /* Extended section numbering is in use. */ 2185 if (elf_getshstrndx(re->elf, &shstrndx)) 2186 printf(" (%ju)", (uintmax_t)shstrndx); 2187 } 2188 putchar('\n'); 2189 } 2190 2191 static void 2192 dump_eflags(struct readelf *re, uint64_t e_flags) 2193 { 2194 struct eflags_desc *edesc; 2195 int arm_eabi; 2196 2197 edesc = NULL; 2198 switch (re->ehdr.e_machine) { 2199 case EM_ARM: 2200 arm_eabi = (e_flags & EF_ARM_EABIMASK) >> 24; 2201 if (arm_eabi == 0) 2202 printf(", GNU EABI"); 2203 else if (arm_eabi <= 5) 2204 printf(", Version%d EABI", arm_eabi); 2205 edesc = arm_eflags_desc; 2206 break; 2207 case EM_MIPS: 2208 case EM_MIPS_RS3_LE: 2209 switch ((e_flags & EF_MIPS_ARCH) >> 28) { 2210 case 0: printf(", mips1"); break; 2211 case 1: printf(", mips2"); break; 2212 case 2: printf(", mips3"); break; 2213 case 3: printf(", mips4"); break; 2214 case 4: printf(", mips5"); break; 2215 case 5: printf(", mips32"); break; 2216 case 6: printf(", mips64"); break; 2217 case 7: printf(", mips32r2"); break; 2218 case 8: printf(", mips64r2"); break; 2219 default: break; 2220 } 2221 switch ((e_flags & 0x00FF0000) >> 16) { 2222 case 0x81: printf(", 3900"); break; 2223 case 0x82: printf(", 4010"); break; 2224 case 0x83: printf(", 4100"); break; 2225 case 0x85: printf(", 4650"); break; 2226 case 0x87: printf(", 4120"); break; 2227 case 0x88: printf(", 4111"); break; 2228 case 0x8a: printf(", sb1"); break; 2229 case 0x8b: printf(", octeon"); break; 2230 case 0x8c: printf(", xlr"); break; 2231 case 0x91: printf(", 5400"); break; 2232 case 0x98: printf(", 5500"); break; 2233 case 0x99: printf(", 9000"); break; 2234 case 0xa0: printf(", loongson-2e"); break; 2235 case 0xa1: printf(", loongson-2f"); break; 2236 default: break; 2237 } 2238 switch ((e_flags & 0x0000F000) >> 12) { 2239 case 1: printf(", o32"); break; 2240 case 2: printf(", o64"); break; 2241 case 3: printf(", eabi32"); break; 2242 case 4: printf(", eabi64"); break; 2243 default: break; 2244 } 2245 edesc = mips_eflags_desc; 2246 break; 2247 case EM_PPC: 2248 case EM_PPC64: 2249 edesc = powerpc_eflags_desc; 2250 break; 2251 case EM_SPARC: 2252 case EM_SPARC32PLUS: 2253 case EM_SPARCV9: 2254 switch ((e_flags & EF_SPARCV9_MM)) { 2255 case EF_SPARCV9_TSO: printf(", tso"); break; 2256 case EF_SPARCV9_PSO: printf(", pso"); break; 2257 case EF_SPARCV9_MM: printf(", rmo"); break; 2258 default: break; 2259 } 2260 edesc = sparc_eflags_desc; 2261 break; 2262 default: 2263 break; 2264 } 2265 2266 if (edesc != NULL) { 2267 while (edesc->desc != NULL) { 2268 if (e_flags & edesc->flag) 2269 printf(", %s", edesc->desc); 2270 edesc++; 2271 } 2272 } 2273 } 2274 2275 static void 2276 dump_phdr(struct readelf *re) 2277 { 2278 const char *rawfile; 2279 GElf_Phdr phdr; 2280 size_t phnum, size; 2281 int i, j; 2282 2283 #define PH_HDR "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz", \ 2284 "MemSiz", "Flg", "Align" 2285 #define PH_CT phdr_type(phdr.p_type), (uintmax_t)phdr.p_offset, \ 2286 (uintmax_t)phdr.p_vaddr, (uintmax_t)phdr.p_paddr, \ 2287 (uintmax_t)phdr.p_filesz, (uintmax_t)phdr.p_memsz, \ 2288 phdr.p_flags & PF_R ? 'R' : ' ', \ 2289 phdr.p_flags & PF_W ? 'W' : ' ', \ 2290 phdr.p_flags & PF_X ? 'E' : ' ', \ 2291 (uintmax_t)phdr.p_align 2292 2293 if (elf_getphnum(re->elf, &phnum) == 0) { 2294 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 2295 return; 2296 } 2297 if (phnum == 0) { 2298 printf("\nThere are no program headers in this file.\n"); 2299 return; 2300 } 2301 2302 printf("\nElf file type is %s", elf_type(re->ehdr.e_type)); 2303 printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry); 2304 printf("There are %ju program headers, starting at offset %ju\n", 2305 (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff); 2306 2307 /* Dump program headers. */ 2308 printf("\nProgram Headers:\n"); 2309 if (re->ec == ELFCLASS32) 2310 printf(" %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR); 2311 else if (re->options & RE_WW) 2312 printf(" %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR); 2313 else 2314 printf(" %-15s%-19s%-19s%s\n %-19s%-20s" 2315 "%-7s%s\n", PH_HDR); 2316 for (i = 0; (size_t) i < phnum; i++) { 2317 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2318 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2319 continue; 2320 } 2321 /* TODO: Add arch-specific segment type dump. */ 2322 if (re->ec == ELFCLASS32) 2323 printf(" %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx " 2324 "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT); 2325 else if (re->options & RE_WW) 2326 printf(" %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx " 2327 "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT); 2328 else 2329 printf(" %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n" 2330 " 0x%16.16jx 0x%16.16jx %c%c%c" 2331 " %#jx\n", PH_CT); 2332 if (phdr.p_type == PT_INTERP) { 2333 if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) { 2334 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 2335 continue; 2336 } 2337 if (phdr.p_offset >= size) { 2338 warnx("invalid program header offset"); 2339 continue; 2340 } 2341 printf(" [Requesting program interpreter: %s]\n", 2342 rawfile + phdr.p_offset); 2343 } 2344 } 2345 2346 /* Dump section to segment mapping. */ 2347 if (re->shnum == 0) 2348 return; 2349 printf("\n Section to Segment mapping:\n"); 2350 printf(" Segment Sections...\n"); 2351 for (i = 0; (size_t)i < phnum; i++) { 2352 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2353 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2354 continue; 2355 } 2356 printf(" %2.2d ", i); 2357 /* skip NULL section. */ 2358 for (j = 1; (size_t)j < re->shnum; j++) 2359 if (re->sl[j].addr >= phdr.p_vaddr && 2360 re->sl[j].addr + re->sl[j].sz <= 2361 phdr.p_vaddr + phdr.p_memsz) 2362 printf("%s ", re->sl[j].name); 2363 printf("\n"); 2364 } 2365 #undef PH_HDR 2366 #undef PH_CT 2367 } 2368 2369 static char * 2370 section_flags(struct readelf *re, struct section *s) 2371 { 2372 #define BUF_SZ 256 2373 static char buf[BUF_SZ]; 2374 int i, p, nb; 2375 2376 p = 0; 2377 nb = re->ec == ELFCLASS32 ? 8 : 16; 2378 if (re->options & RE_T) { 2379 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb, 2380 (uintmax_t)s->flags); 2381 p += nb + 4; 2382 } 2383 for (i = 0; section_flag[i].ln != NULL; i++) { 2384 if ((s->flags & section_flag[i].value) == 0) 2385 continue; 2386 if (re->options & RE_T) { 2387 snprintf(&buf[p], BUF_SZ - p, "%s, ", 2388 section_flag[i].ln); 2389 p += strlen(section_flag[i].ln) + 2; 2390 } else 2391 buf[p++] = section_flag[i].sn; 2392 } 2393 if (re->options & RE_T && p > nb + 4) 2394 p -= 2; 2395 buf[p] = '\0'; 2396 2397 return (buf); 2398 } 2399 2400 static void 2401 dump_shdr(struct readelf *re) 2402 { 2403 struct section *s; 2404 int i; 2405 2406 #define S_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2407 "Flg", "Lk", "Inf", "Al" 2408 #define S_HDRL "[Nr] Name", "Type", "Address", "Offset", "Size", \ 2409 "EntSize", "Flags", "Link", "Info", "Align" 2410 #define ST_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2411 "Lk", "Inf", "Al", "Flags" 2412 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link", \ 2413 "Size", "EntSize", "Info", "Align", "Flags" 2414 #define S_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2415 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2416 (uintmax_t)s->entsize, section_flags(re, s), \ 2417 s->link, s->info, (uintmax_t)s->align 2418 #define ST_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2419 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2420 (uintmax_t)s->entsize, s->link, s->info, \ 2421 (uintmax_t)s->align, section_flags(re, s) 2422 #define ST_CTL i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2423 (uintmax_t)s->addr, (uintmax_t)s->off, s->link, \ 2424 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info, \ 2425 (uintmax_t)s->align, section_flags(re, s) 2426 2427 if (re->shnum == 0) { 2428 printf("\nThere are no sections in this file.\n"); 2429 return; 2430 } 2431 printf("There are %ju section headers, starting at offset 0x%jx:\n", 2432 (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff); 2433 printf("\nSection Headers:\n"); 2434 if (re->ec == ELFCLASS32) { 2435 if (re->options & RE_T) 2436 printf(" %s\n %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n" 2437 "%12s\n", ST_HDR); 2438 else 2439 printf(" %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2440 S_HDR); 2441 } else if (re->options & RE_WW) { 2442 if (re->options & RE_T) 2443 printf(" %s\n %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n" 2444 "%12s\n", ST_HDR); 2445 else 2446 printf(" %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2447 S_HDR); 2448 } else { 2449 if (re->options & RE_T) 2450 printf(" %s\n %-18s%-17s%-18s%s\n %-18s" 2451 "%-17s%-18s%s\n%12s\n", ST_HDRL); 2452 else 2453 printf(" %-23s%-17s%-18s%s\n %-18s%-17s%-7s%" 2454 "-6s%-6s%s\n", S_HDRL); 2455 } 2456 for (i = 0; (size_t)i < re->shnum; i++) { 2457 s = &re->sl[i]; 2458 if (re->ec == ELFCLASS32) { 2459 if (re->options & RE_T) 2460 printf(" [%2d] %s\n %-15.15s %8.8jx" 2461 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2462 " %s\n", ST_CT); 2463 else 2464 printf(" [%2d] %-17.17s %-15.15s %8.8jx" 2465 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2466 S_CT); 2467 } else if (re->options & RE_WW) { 2468 if (re->options & RE_T) 2469 printf(" [%2d] %s\n %-15.15s %16.16jx" 2470 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2471 " %s\n", ST_CT); 2472 else 2473 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2474 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2475 S_CT); 2476 } else { 2477 if (re->options & RE_T) 2478 printf(" [%2d] %s\n %-15.15s %16.16jx" 2479 " %16.16jx %u\n %16.16jx %16.16jx" 2480 " %-16u %ju\n %s\n", ST_CTL); 2481 else 2482 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2483 " %8.8jx\n %16.16jx %16.16jx " 2484 "%3s %2u %3u %ju\n", S_CT); 2485 } 2486 } 2487 if ((re->options & RE_T) == 0) 2488 printf("Key to Flags:\n W (write), A (alloc)," 2489 " X (execute), M (merge), S (strings)\n" 2490 " I (info), L (link order), G (group), x (unknown)\n" 2491 " O (extra OS processing required)" 2492 " o (OS specific), p (processor specific)\n"); 2493 2494 #undef S_HDR 2495 #undef S_HDRL 2496 #undef ST_HDR 2497 #undef ST_HDRL 2498 #undef S_CT 2499 #undef ST_CT 2500 #undef ST_CTL 2501 } 2502 2503 /* 2504 * Return number of entries in the given section. We'd prefer ent_count be a 2505 * size_t *, but libelf APIs already use int for section indices. 2506 */ 2507 static int 2508 get_ent_count(struct section *s, int *ent_count) 2509 { 2510 if (s->entsize == 0) { 2511 warnx("section %s has entry size 0", s->name); 2512 return (0); 2513 } else if (s->sz / s->entsize > INT_MAX) { 2514 warnx("section %s has invalid section count", s->name); 2515 return (0); 2516 } 2517 *ent_count = (int)(s->sz / s->entsize); 2518 return (1); 2519 } 2520 2521 static void 2522 dump_dynamic(struct readelf *re) 2523 { 2524 GElf_Dyn dyn; 2525 Elf_Data *d; 2526 struct section *s; 2527 int elferr, i, is_dynamic, j, jmax, nentries; 2528 2529 is_dynamic = 0; 2530 2531 for (i = 0; (size_t)i < re->shnum; i++) { 2532 s = &re->sl[i]; 2533 if (s->type != SHT_DYNAMIC) 2534 continue; 2535 (void) elf_errno(); 2536 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2537 elferr = elf_errno(); 2538 if (elferr != 0) 2539 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 2540 continue; 2541 } 2542 if (d->d_size <= 0) 2543 continue; 2544 2545 is_dynamic = 1; 2546 2547 /* Determine the actual number of table entries. */ 2548 nentries = 0; 2549 if (!get_ent_count(s, &jmax)) 2550 continue; 2551 for (j = 0; j < jmax; j++) { 2552 if (gelf_getdyn(d, j, &dyn) != &dyn) { 2553 warnx("gelf_getdyn failed: %s", 2554 elf_errmsg(-1)); 2555 continue; 2556 } 2557 nentries ++; 2558 if (dyn.d_tag == DT_NULL) 2559 break; 2560 } 2561 2562 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off); 2563 printf(" contains %u entries:\n", nentries); 2564 2565 if (re->ec == ELFCLASS32) 2566 printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value"); 2567 else 2568 printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value"); 2569 2570 for (j = 0; j < nentries; j++) { 2571 if (gelf_getdyn(d, j, &dyn) != &dyn) 2572 continue; 2573 /* Dump dynamic entry type. */ 2574 if (re->ec == ELFCLASS32) 2575 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag); 2576 else 2577 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag); 2578 printf(" %-20s", dt_type(re->ehdr.e_machine, 2579 dyn.d_tag)); 2580 /* Dump dynamic entry value. */ 2581 dump_dyn_val(re, &dyn, s->link); 2582 } 2583 } 2584 2585 if (!is_dynamic) 2586 printf("\nThere is no dynamic section in this file.\n"); 2587 } 2588 2589 static char * 2590 timestamp(time_t ti) 2591 { 2592 static char ts[32]; 2593 struct tm *t; 2594 2595 t = gmtime(&ti); 2596 snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d", 2597 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, 2598 t->tm_min, t->tm_sec); 2599 2600 return (ts); 2601 } 2602 2603 static const char * 2604 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val) 2605 { 2606 const char *name; 2607 2608 if (stab == SHN_UNDEF) 2609 name = "ERROR"; 2610 else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) { 2611 (void) elf_errno(); /* clear error */ 2612 name = "ERROR"; 2613 } 2614 2615 return (name); 2616 } 2617 2618 static void 2619 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab) 2620 { 2621 const char *name; 2622 2623 switch (re->ehdr.e_machine) { 2624 case EM_MIPS: 2625 case EM_MIPS_RS3_LE: 2626 switch (dyn->d_tag) { 2627 case DT_MIPS_RLD_VERSION: 2628 case DT_MIPS_LOCAL_GOTNO: 2629 case DT_MIPS_CONFLICTNO: 2630 case DT_MIPS_LIBLISTNO: 2631 case DT_MIPS_SYMTABNO: 2632 case DT_MIPS_UNREFEXTNO: 2633 case DT_MIPS_GOTSYM: 2634 case DT_MIPS_HIPAGENO: 2635 case DT_MIPS_DELTA_CLASS_NO: 2636 case DT_MIPS_DELTA_INSTANCE_NO: 2637 case DT_MIPS_DELTA_RELOC_NO: 2638 case DT_MIPS_DELTA_SYM_NO: 2639 case DT_MIPS_DELTA_CLASSSYM_NO: 2640 case DT_MIPS_LOCALPAGE_GOTIDX: 2641 case DT_MIPS_LOCAL_GOTIDX: 2642 case DT_MIPS_HIDDEN_GOTIDX: 2643 case DT_MIPS_PROTECTED_GOTIDX: 2644 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2645 break; 2646 case DT_MIPS_ICHECKSUM: 2647 case DT_MIPS_FLAGS: 2648 case DT_MIPS_BASE_ADDRESS: 2649 case DT_MIPS_CONFLICT: 2650 case DT_MIPS_LIBLIST: 2651 case DT_MIPS_RLD_MAP: 2652 case DT_MIPS_DELTA_CLASS: 2653 case DT_MIPS_DELTA_INSTANCE: 2654 case DT_MIPS_DELTA_RELOC: 2655 case DT_MIPS_DELTA_SYM: 2656 case DT_MIPS_DELTA_CLASSSYM: 2657 case DT_MIPS_CXX_FLAGS: 2658 case DT_MIPS_PIXIE_INIT: 2659 case DT_MIPS_SYMBOL_LIB: 2660 case DT_MIPS_OPTIONS: 2661 case DT_MIPS_INTERFACE: 2662 case DT_MIPS_DYNSTR_ALIGN: 2663 case DT_MIPS_INTERFACE_SIZE: 2664 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2665 case DT_MIPS_COMPACT_SIZE: 2666 case DT_MIPS_GP_VALUE: 2667 case DT_MIPS_AUX_DYNAMIC: 2668 case DT_MIPS_PLTGOT: 2669 case DT_MIPS_RLD_OBJ_UPDATE: 2670 case DT_MIPS_RWPLT: 2671 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2672 break; 2673 case DT_MIPS_IVERSION: 2674 case DT_MIPS_PERF_SUFFIX: 2675 case DT_AUXILIARY: 2676 case DT_FILTER: 2677 name = dyn_str(re, stab, dyn->d_un.d_val); 2678 printf(" %s\n", name); 2679 break; 2680 case DT_MIPS_TIME_STAMP: 2681 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2682 break; 2683 } 2684 break; 2685 default: 2686 printf("\n"); 2687 break; 2688 } 2689 } 2690 2691 static void 2692 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab) 2693 { 2694 const char *name; 2695 2696 if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC) { 2697 dump_arch_dyn_val(re, dyn, stab); 2698 return; 2699 } 2700 2701 /* These entry values are index into the string table. */ 2702 name = NULL; 2703 if (dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME || 2704 dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH) 2705 name = dyn_str(re, stab, dyn->d_un.d_val); 2706 2707 switch(dyn->d_tag) { 2708 case DT_NULL: 2709 case DT_PLTGOT: 2710 case DT_HASH: 2711 case DT_STRTAB: 2712 case DT_SYMTAB: 2713 case DT_RELA: 2714 case DT_INIT: 2715 case DT_SYMBOLIC: 2716 case DT_REL: 2717 case DT_DEBUG: 2718 case DT_TEXTREL: 2719 case DT_JMPREL: 2720 case DT_FINI: 2721 case DT_VERDEF: 2722 case DT_VERNEED: 2723 case DT_VERSYM: 2724 case DT_GNU_HASH: 2725 case DT_GNU_LIBLIST: 2726 case DT_GNU_CONFLICT: 2727 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2728 break; 2729 case DT_PLTRELSZ: 2730 case DT_RELASZ: 2731 case DT_RELAENT: 2732 case DT_STRSZ: 2733 case DT_SYMENT: 2734 case DT_RELSZ: 2735 case DT_RELENT: 2736 case DT_INIT_ARRAYSZ: 2737 case DT_FINI_ARRAYSZ: 2738 case DT_GNU_CONFLICTSZ: 2739 case DT_GNU_LIBLISTSZ: 2740 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val); 2741 break; 2742 case DT_RELACOUNT: 2743 case DT_RELCOUNT: 2744 case DT_VERDEFNUM: 2745 case DT_VERNEEDNUM: 2746 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2747 break; 2748 case DT_NEEDED: 2749 printf(" Shared library: [%s]\n", name); 2750 break; 2751 case DT_SONAME: 2752 printf(" Library soname: [%s]\n", name); 2753 break; 2754 case DT_RPATH: 2755 printf(" Library rpath: [%s]\n", name); 2756 break; 2757 case DT_RUNPATH: 2758 printf(" Library runpath: [%s]\n", name); 2759 break; 2760 case DT_PLTREL: 2761 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val)); 2762 break; 2763 case DT_GNU_PRELINKED: 2764 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2765 break; 2766 default: 2767 printf("\n"); 2768 } 2769 } 2770 2771 static void 2772 dump_rel(struct readelf *re, struct section *s, Elf_Data *d) 2773 { 2774 GElf_Rel r; 2775 const char *symname; 2776 uint64_t symval; 2777 int i, len; 2778 2779 if (s->link >= re->shnum) 2780 return; 2781 2782 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name" 2783 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2784 elftc_reloc_type_str(re->ehdr.e_machine, \ 2785 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2786 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2787 elftc_reloc_type_str(re->ehdr.e_machine, \ 2788 ELF64_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2789 2790 printf("\nRelocation section (%s):\n", s->name); 2791 if (re->ec == ELFCLASS32) 2792 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR); 2793 else { 2794 if (re->options & RE_WW) 2795 printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR); 2796 else 2797 printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR); 2798 } 2799 assert(d->d_size == s->sz); 2800 if (!get_ent_count(s, &len)) 2801 return; 2802 for (i = 0; i < len; i++) { 2803 if (gelf_getrel(d, i, &r) != &r) { 2804 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 2805 continue; 2806 } 2807 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 2808 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 2809 if (re->ec == ELFCLASS32) { 2810 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 2811 ELF64_R_TYPE(r.r_info)); 2812 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32); 2813 } else { 2814 if (re->options & RE_WW) 2815 printf("%16.16jx %16.16jx %-24.24s" 2816 " %16.16jx %s\n", REL_CT64); 2817 else 2818 printf("%12.12jx %12.12jx %-19.19s" 2819 " %16.16jx %s\n", REL_CT64); 2820 } 2821 } 2822 2823 #undef REL_HDR 2824 #undef REL_CT 2825 } 2826 2827 static void 2828 dump_rela(struct readelf *re, struct section *s, Elf_Data *d) 2829 { 2830 GElf_Rela r; 2831 const char *symname; 2832 uint64_t symval; 2833 int i, len; 2834 2835 if (s->link >= re->shnum) 2836 return; 2837 2838 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \ 2839 "st_name + r_addend" 2840 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2841 elftc_reloc_type_str(re->ehdr.e_machine, \ 2842 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2843 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2844 elftc_reloc_type_str(re->ehdr.e_machine, \ 2845 ELF64_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2846 2847 printf("\nRelocation section with addend (%s):\n", s->name); 2848 if (re->ec == ELFCLASS32) 2849 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR); 2850 else { 2851 if (re->options & RE_WW) 2852 printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR); 2853 else 2854 printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR); 2855 } 2856 assert(d->d_size == s->sz); 2857 if (!get_ent_count(s, &len)) 2858 return; 2859 for (i = 0; i < len; i++) { 2860 if (gelf_getrela(d, i, &r) != &r) { 2861 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 2862 continue; 2863 } 2864 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 2865 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 2866 if (re->ec == ELFCLASS32) { 2867 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 2868 ELF64_R_TYPE(r.r_info)); 2869 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32); 2870 printf(" + %x\n", (uint32_t) r.r_addend); 2871 } else { 2872 if (re->options & RE_WW) 2873 printf("%16.16jx %16.16jx %-24.24s" 2874 " %16.16jx %s", RELA_CT64); 2875 else 2876 printf("%12.12jx %12.12jx %-19.19s" 2877 " %16.16jx %s", RELA_CT64); 2878 printf(" + %jx\n", (uintmax_t) r.r_addend); 2879 } 2880 } 2881 2882 #undef RELA_HDR 2883 #undef RELA_CT 2884 } 2885 2886 static void 2887 dump_reloc(struct readelf *re) 2888 { 2889 struct section *s; 2890 Elf_Data *d; 2891 int i, elferr; 2892 2893 for (i = 0; (size_t)i < re->shnum; i++) { 2894 s = &re->sl[i]; 2895 if (s->type == SHT_REL || s->type == SHT_RELA) { 2896 (void) elf_errno(); 2897 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2898 elferr = elf_errno(); 2899 if (elferr != 0) 2900 warnx("elf_getdata failed: %s", 2901 elf_errmsg(elferr)); 2902 continue; 2903 } 2904 if (s->type == SHT_REL) 2905 dump_rel(re, s, d); 2906 else 2907 dump_rela(re, s, d); 2908 } 2909 } 2910 } 2911 2912 static void 2913 dump_symtab(struct readelf *re, int i) 2914 { 2915 struct section *s; 2916 Elf_Data *d; 2917 GElf_Sym sym; 2918 const char *name; 2919 uint32_t stab; 2920 int elferr, j, len; 2921 uint16_t vs; 2922 2923 s = &re->sl[i]; 2924 if (s->link >= re->shnum) 2925 return; 2926 stab = s->link; 2927 (void) elf_errno(); 2928 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2929 elferr = elf_errno(); 2930 if (elferr != 0) 2931 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 2932 return; 2933 } 2934 if (d->d_size <= 0) 2935 return; 2936 if (!get_ent_count(s, &len)) 2937 return; 2938 printf("Symbol table (%s)", s->name); 2939 printf(" contains %d entries:\n", len); 2940 printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type", 2941 "Bind", "Vis", "Ndx", "Name"); 2942 2943 for (j = 0; j < len; j++) { 2944 if (gelf_getsym(d, j, &sym) != &sym) { 2945 warnx("gelf_getsym failed: %s", elf_errmsg(-1)); 2946 continue; 2947 } 2948 printf("%6d:", j); 2949 printf(" %16.16jx", (uintmax_t) sym.st_value); 2950 printf(" %5ju", (uintmax_t) sym.st_size); 2951 printf(" %-7s", st_type(re->ehdr.e_machine, 2952 re->ehdr.e_ident[EI_OSABI], GELF_ST_TYPE(sym.st_info))); 2953 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info))); 2954 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other))); 2955 printf(" %3s", st_shndx(sym.st_shndx)); 2956 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL) 2957 printf(" %s", name); 2958 /* Append symbol version string for SHT_DYNSYM symbol table. */ 2959 if (s->type == SHT_DYNSYM && re->ver != NULL && 2960 re->vs != NULL && re->vs[j] > 1) { 2961 vs = re->vs[j] & VERSYM_VERSION; 2962 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 2963 warnx("invalid versym version index %u", vs); 2964 break; 2965 } 2966 if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0) 2967 printf("@%s (%d)", re->ver[vs].name, vs); 2968 else 2969 printf("@@%s (%d)", re->ver[vs].name, vs); 2970 } 2971 putchar('\n'); 2972 } 2973 2974 } 2975 2976 static void 2977 dump_symtabs(struct readelf *re) 2978 { 2979 GElf_Dyn dyn; 2980 Elf_Data *d; 2981 struct section *s; 2982 uint64_t dyn_off; 2983 int elferr, i, len; 2984 2985 /* 2986 * If -D is specified, only dump the symbol table specified by 2987 * the DT_SYMTAB entry in the .dynamic section. 2988 */ 2989 dyn_off = 0; 2990 if (re->options & RE_DD) { 2991 s = NULL; 2992 for (i = 0; (size_t)i < re->shnum; i++) 2993 if (re->sl[i].type == SHT_DYNAMIC) { 2994 s = &re->sl[i]; 2995 break; 2996 } 2997 if (s == NULL) 2998 return; 2999 (void) elf_errno(); 3000 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3001 elferr = elf_errno(); 3002 if (elferr != 0) 3003 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 3004 return; 3005 } 3006 if (d->d_size <= 0) 3007 return; 3008 if (!get_ent_count(s, &len)) 3009 return; 3010 3011 for (i = 0; i < len; i++) { 3012 if (gelf_getdyn(d, i, &dyn) != &dyn) { 3013 warnx("gelf_getdyn failed: %s", elf_errmsg(-1)); 3014 continue; 3015 } 3016 if (dyn.d_tag == DT_SYMTAB) { 3017 dyn_off = dyn.d_un.d_val; 3018 break; 3019 } 3020 } 3021 } 3022 3023 /* Find and dump symbol tables. */ 3024 for (i = 0; (size_t)i < re->shnum; i++) { 3025 s = &re->sl[i]; 3026 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) { 3027 if (re->options & RE_DD) { 3028 if (dyn_off == s->addr) { 3029 dump_symtab(re, i); 3030 break; 3031 } 3032 } else 3033 dump_symtab(re, i); 3034 } 3035 } 3036 } 3037 3038 static void 3039 dump_svr4_hash(struct section *s) 3040 { 3041 Elf_Data *d; 3042 uint32_t *buf; 3043 uint32_t nbucket, nchain; 3044 uint32_t *bucket, *chain; 3045 uint32_t *bl, *c, maxl, total; 3046 int elferr, i, j; 3047 3048 /* Read and parse the content of .hash section. */ 3049 (void) elf_errno(); 3050 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3051 elferr = elf_errno(); 3052 if (elferr != 0) 3053 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3054 return; 3055 } 3056 if (d->d_size < 2 * sizeof(uint32_t)) { 3057 warnx(".hash section too small"); 3058 return; 3059 } 3060 buf = d->d_buf; 3061 nbucket = buf[0]; 3062 nchain = buf[1]; 3063 if (nbucket <= 0 || nchain <= 0) { 3064 warnx("Malformed .hash section"); 3065 return; 3066 } 3067 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3068 warnx("Malformed .hash section"); 3069 return; 3070 } 3071 bucket = &buf[2]; 3072 chain = &buf[2 + nbucket]; 3073 3074 maxl = 0; 3075 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3076 errx(EXIT_FAILURE, "calloc failed"); 3077 for (i = 0; (uint32_t)i < nbucket; i++) 3078 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3079 if (++bl[i] > maxl) 3080 maxl = bl[i]; 3081 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3082 errx(EXIT_FAILURE, "calloc failed"); 3083 for (i = 0; (uint32_t)i < nbucket; i++) 3084 c[bl[i]]++; 3085 printf("\nHistogram for bucket list length (total of %u buckets):\n", 3086 nbucket); 3087 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3088 total = 0; 3089 for (i = 0; (uint32_t)i <= maxl; i++) { 3090 total += c[i] * i; 3091 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3092 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3093 } 3094 free(c); 3095 free(bl); 3096 } 3097 3098 static void 3099 dump_svr4_hash64(struct readelf *re, struct section *s) 3100 { 3101 Elf_Data *d, dst; 3102 uint64_t *buf; 3103 uint64_t nbucket, nchain; 3104 uint64_t *bucket, *chain; 3105 uint64_t *bl, *c, maxl, total; 3106 int elferr, i, j; 3107 3108 /* 3109 * ALPHA uses 64-bit hash entries. Since libelf assumes that 3110 * .hash section contains only 32-bit entry, an explicit 3111 * gelf_xlatetom is needed here. 3112 */ 3113 (void) elf_errno(); 3114 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 3115 elferr = elf_errno(); 3116 if (elferr != 0) 3117 warnx("elf_rawdata failed: %s", 3118 elf_errmsg(elferr)); 3119 return; 3120 } 3121 d->d_type = ELF_T_XWORD; 3122 memcpy(&dst, d, sizeof(Elf_Data)); 3123 if (gelf_xlatetom(re->elf, &dst, d, 3124 re->ehdr.e_ident[EI_DATA]) != &dst) { 3125 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1)); 3126 return; 3127 } 3128 if (dst.d_size < 2 * sizeof(uint64_t)) { 3129 warnx(".hash section too small"); 3130 return; 3131 } 3132 buf = dst.d_buf; 3133 nbucket = buf[0]; 3134 nchain = buf[1]; 3135 if (nbucket <= 0 || nchain <= 0) { 3136 warnx("Malformed .hash section"); 3137 return; 3138 } 3139 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3140 warnx("Malformed .hash section"); 3141 return; 3142 } 3143 bucket = &buf[2]; 3144 chain = &buf[2 + nbucket]; 3145 3146 maxl = 0; 3147 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3148 errx(EXIT_FAILURE, "calloc failed"); 3149 for (i = 0; (uint32_t)i < nbucket; i++) 3150 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3151 if (++bl[i] > maxl) 3152 maxl = bl[i]; 3153 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3154 errx(EXIT_FAILURE, "calloc failed"); 3155 for (i = 0; (uint64_t)i < nbucket; i++) 3156 c[bl[i]]++; 3157 printf("Histogram for bucket list length (total of %ju buckets):\n", 3158 (uintmax_t)nbucket); 3159 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3160 total = 0; 3161 for (i = 0; (uint64_t)i <= maxl; i++) { 3162 total += c[i] * i; 3163 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i], 3164 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3165 } 3166 free(c); 3167 free(bl); 3168 } 3169 3170 static void 3171 dump_gnu_hash(struct readelf *re, struct section *s) 3172 { 3173 struct section *ds; 3174 Elf_Data *d; 3175 uint32_t *buf; 3176 uint32_t *bucket, *chain; 3177 uint32_t nbucket, nchain, symndx, maskwords; 3178 uint32_t *bl, *c, maxl, total; 3179 int elferr, dynsymcount, i, j; 3180 3181 (void) elf_errno(); 3182 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3183 elferr = elf_errno(); 3184 if (elferr != 0) 3185 warnx("elf_getdata failed: %s", 3186 elf_errmsg(elferr)); 3187 return; 3188 } 3189 if (d->d_size < 4 * sizeof(uint32_t)) { 3190 warnx(".gnu.hash section too small"); 3191 return; 3192 } 3193 buf = d->d_buf; 3194 nbucket = buf[0]; 3195 symndx = buf[1]; 3196 maskwords = buf[2]; 3197 buf += 4; 3198 if (s->link >= re->shnum) 3199 return; 3200 ds = &re->sl[s->link]; 3201 if (!get_ent_count(ds, &dynsymcount)) 3202 return; 3203 if (symndx >= (uint32_t)dynsymcount) { 3204 warnx("Malformed .gnu.hash section (symndx out of range)"); 3205 return; 3206 } 3207 nchain = dynsymcount - symndx; 3208 if (d->d_size != 4 * sizeof(uint32_t) + maskwords * 3209 (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) + 3210 (nbucket + nchain) * sizeof(uint32_t)) { 3211 warnx("Malformed .gnu.hash section"); 3212 return; 3213 } 3214 bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2); 3215 chain = bucket + nbucket; 3216 3217 maxl = 0; 3218 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3219 errx(EXIT_FAILURE, "calloc failed"); 3220 for (i = 0; (uint32_t)i < nbucket; i++) 3221 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain; 3222 j++) { 3223 if (++bl[i] > maxl) 3224 maxl = bl[i]; 3225 if (chain[j - symndx] & 1) 3226 break; 3227 } 3228 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3229 errx(EXIT_FAILURE, "calloc failed"); 3230 for (i = 0; (uint32_t)i < nbucket; i++) 3231 c[bl[i]]++; 3232 printf("Histogram for bucket list length (total of %u buckets):\n", 3233 nbucket); 3234 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3235 total = 0; 3236 for (i = 0; (uint32_t)i <= maxl; i++) { 3237 total += c[i] * i; 3238 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3239 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3240 } 3241 free(c); 3242 free(bl); 3243 } 3244 3245 static void 3246 dump_hash(struct readelf *re) 3247 { 3248 struct section *s; 3249 int i; 3250 3251 for (i = 0; (size_t) i < re->shnum; i++) { 3252 s = &re->sl[i]; 3253 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) { 3254 if (s->type == SHT_GNU_HASH) 3255 dump_gnu_hash(re, s); 3256 else if (re->ehdr.e_machine == EM_ALPHA && 3257 s->entsize == 8) 3258 dump_svr4_hash64(re, s); 3259 else 3260 dump_svr4_hash(s); 3261 } 3262 } 3263 } 3264 3265 static void 3266 dump_notes(struct readelf *re) 3267 { 3268 struct section *s; 3269 const char *rawfile; 3270 GElf_Phdr phdr; 3271 Elf_Data *d; 3272 size_t filesize, phnum; 3273 int i, elferr; 3274 3275 if (re->ehdr.e_type == ET_CORE) { 3276 /* 3277 * Search program headers in the core file for 3278 * PT_NOTE entry. 3279 */ 3280 if (elf_getphnum(re->elf, &phnum) == 0) { 3281 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 3282 return; 3283 } 3284 if (phnum == 0) 3285 return; 3286 if ((rawfile = elf_rawfile(re->elf, &filesize)) == NULL) { 3287 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 3288 return; 3289 } 3290 for (i = 0; (size_t) i < phnum; i++) { 3291 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 3292 warnx("gelf_getphdr failed: %s", 3293 elf_errmsg(-1)); 3294 continue; 3295 } 3296 if (phdr.p_type == PT_NOTE) { 3297 if (phdr.p_offset >= filesize || 3298 phdr.p_filesz > filesize - phdr.p_offset) { 3299 warnx("invalid PHDR offset"); 3300 continue; 3301 } 3302 dump_notes_content(re, rawfile + phdr.p_offset, 3303 phdr.p_filesz, phdr.p_offset); 3304 } 3305 } 3306 3307 } else { 3308 /* 3309 * For objects other than core files, Search for 3310 * SHT_NOTE sections. 3311 */ 3312 for (i = 0; (size_t) i < re->shnum; i++) { 3313 s = &re->sl[i]; 3314 if (s->type == SHT_NOTE) { 3315 (void) elf_errno(); 3316 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3317 elferr = elf_errno(); 3318 if (elferr != 0) 3319 warnx("elf_getdata failed: %s", 3320 elf_errmsg(elferr)); 3321 continue; 3322 } 3323 dump_notes_content(re, d->d_buf, d->d_size, 3324 s->off); 3325 } 3326 } 3327 } 3328 } 3329 3330 static void 3331 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off) 3332 { 3333 Elf_Note *note; 3334 const char *end, *name; 3335 3336 printf("\nNotes at offset %#010jx with length %#010jx:\n", 3337 (uintmax_t) off, (uintmax_t) sz); 3338 printf(" %-13s %-15s %s\n", "Owner", "Data size", "Description"); 3339 end = buf + sz; 3340 while (buf < end) { 3341 if (buf + sizeof(*note) > end) { 3342 warnx("invalid note header"); 3343 return; 3344 } 3345 note = (Elf_Note *)(uintptr_t) buf; 3346 name = (char *)(uintptr_t)(note + 1); 3347 /* 3348 * The name field is required to be nul-terminated, and 3349 * n_namesz includes the terminating nul in observed 3350 * implementations (contrary to the ELF-64 spec). A special 3351 * case is needed for cores generated by some older Linux 3352 * versions, which write a note named "CORE" without a nul 3353 * terminator and n_namesz = 4. 3354 */ 3355 if (note->n_namesz == 0) 3356 name = ""; 3357 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0) 3358 name = "CORE"; 3359 else if (strnlen(name, note->n_namesz) >= note->n_namesz) 3360 name = "<invalid>"; 3361 printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz); 3362 printf(" %s\n", note_type(name, re->ehdr.e_type, 3363 note->n_type)); 3364 buf += sizeof(Elf_Note) + roundup2(note->n_namesz, 4) + 3365 roundup2(note->n_descsz, 4); 3366 } 3367 } 3368 3369 /* 3370 * Symbol versioning sections are the same for 32bit and 64bit 3371 * ELF objects. 3372 */ 3373 #define Elf_Verdef Elf32_Verdef 3374 #define Elf_Verdaux Elf32_Verdaux 3375 #define Elf_Verneed Elf32_Verneed 3376 #define Elf_Vernaux Elf32_Vernaux 3377 3378 #define SAVE_VERSION_NAME(x, n, t) \ 3379 do { \ 3380 while (x >= re->ver_sz) { \ 3381 nv = realloc(re->ver, \ 3382 sizeof(*re->ver) * re->ver_sz * 2); \ 3383 if (nv == NULL) { \ 3384 warn("realloc failed"); \ 3385 free(re->ver); \ 3386 return; \ 3387 } \ 3388 re->ver = nv; \ 3389 for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \ 3390 re->ver[i].name = NULL; \ 3391 re->ver[i].type = 0; \ 3392 } \ 3393 re->ver_sz *= 2; \ 3394 } \ 3395 if (x > 1) { \ 3396 re->ver[x].name = n; \ 3397 re->ver[x].type = t; \ 3398 } \ 3399 } while (0) 3400 3401 3402 static void 3403 dump_verdef(struct readelf *re, int dump) 3404 { 3405 struct section *s; 3406 struct symver *nv; 3407 Elf_Data *d; 3408 Elf_Verdef *vd; 3409 Elf_Verdaux *vda; 3410 uint8_t *buf, *end, *buf2; 3411 const char *name; 3412 int elferr, i, j; 3413 3414 if ((s = re->vd_s) == NULL) 3415 return; 3416 if (s->link >= re->shnum) 3417 return; 3418 3419 if (re->ver == NULL) { 3420 re->ver_sz = 16; 3421 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3422 NULL) { 3423 warn("calloc failed"); 3424 return; 3425 } 3426 re->ver[0].name = "*local*"; 3427 re->ver[1].name = "*global*"; 3428 } 3429 3430 if (dump) 3431 printf("\nVersion definition section (%s):\n", s->name); 3432 (void) elf_errno(); 3433 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3434 elferr = elf_errno(); 3435 if (elferr != 0) 3436 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3437 return; 3438 } 3439 if (d->d_size == 0) 3440 return; 3441 3442 buf = d->d_buf; 3443 end = buf + d->d_size; 3444 while (buf + sizeof(Elf_Verdef) <= end) { 3445 vd = (Elf_Verdef *) (uintptr_t) buf; 3446 if (dump) { 3447 printf(" 0x%4.4lx", (unsigned long) 3448 (buf - (uint8_t *)d->d_buf)); 3449 printf(" vd_version: %u vd_flags: %d" 3450 " vd_ndx: %u vd_cnt: %u", vd->vd_version, 3451 vd->vd_flags, vd->vd_ndx, vd->vd_cnt); 3452 } 3453 buf2 = buf + vd->vd_aux; 3454 j = 0; 3455 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) { 3456 vda = (Elf_Verdaux *) (uintptr_t) buf2; 3457 name = get_string(re, s->link, vda->vda_name); 3458 if (j == 0) { 3459 if (dump) 3460 printf(" vda_name: %s\n", name); 3461 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1); 3462 } else if (dump) 3463 printf(" 0x%4.4lx parent: %s\n", 3464 (unsigned long) (buf2 - 3465 (uint8_t *)d->d_buf), name); 3466 if (vda->vda_next == 0) 3467 break; 3468 buf2 += vda->vda_next; 3469 j++; 3470 } 3471 if (vd->vd_next == 0) 3472 break; 3473 buf += vd->vd_next; 3474 } 3475 } 3476 3477 static void 3478 dump_verneed(struct readelf *re, int dump) 3479 { 3480 struct section *s; 3481 struct symver *nv; 3482 Elf_Data *d; 3483 Elf_Verneed *vn; 3484 Elf_Vernaux *vna; 3485 uint8_t *buf, *end, *buf2; 3486 const char *name; 3487 int elferr, i, j; 3488 3489 if ((s = re->vn_s) == NULL) 3490 return; 3491 if (s->link >= re->shnum) 3492 return; 3493 3494 if (re->ver == NULL) { 3495 re->ver_sz = 16; 3496 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3497 NULL) { 3498 warn("calloc failed"); 3499 return; 3500 } 3501 re->ver[0].name = "*local*"; 3502 re->ver[1].name = "*global*"; 3503 } 3504 3505 if (dump) 3506 printf("\nVersion needed section (%s):\n", s->name); 3507 (void) elf_errno(); 3508 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3509 elferr = elf_errno(); 3510 if (elferr != 0) 3511 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3512 return; 3513 } 3514 if (d->d_size == 0) 3515 return; 3516 3517 buf = d->d_buf; 3518 end = buf + d->d_size; 3519 while (buf + sizeof(Elf_Verneed) <= end) { 3520 vn = (Elf_Verneed *) (uintptr_t) buf; 3521 if (dump) { 3522 printf(" 0x%4.4lx", (unsigned long) 3523 (buf - (uint8_t *)d->d_buf)); 3524 printf(" vn_version: %u vn_file: %s vn_cnt: %u\n", 3525 vn->vn_version, 3526 get_string(re, s->link, vn->vn_file), 3527 vn->vn_cnt); 3528 } 3529 buf2 = buf + vn->vn_aux; 3530 j = 0; 3531 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) { 3532 vna = (Elf32_Vernaux *) (uintptr_t) buf2; 3533 if (dump) 3534 printf(" 0x%4.4lx", (unsigned long) 3535 (buf2 - (uint8_t *)d->d_buf)); 3536 name = get_string(re, s->link, vna->vna_name); 3537 if (dump) 3538 printf(" vna_name: %s vna_flags: %u" 3539 " vna_other: %u\n", name, 3540 vna->vna_flags, vna->vna_other); 3541 SAVE_VERSION_NAME((int)vna->vna_other, name, 0); 3542 if (vna->vna_next == 0) 3543 break; 3544 buf2 += vna->vna_next; 3545 j++; 3546 } 3547 if (vn->vn_next == 0) 3548 break; 3549 buf += vn->vn_next; 3550 } 3551 } 3552 3553 static void 3554 dump_versym(struct readelf *re) 3555 { 3556 int i; 3557 uint16_t vs; 3558 3559 if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL) 3560 return; 3561 printf("\nVersion symbol section (%s):\n", re->vs_s->name); 3562 for (i = 0; i < re->vs_sz; i++) { 3563 if ((i & 3) == 0) { 3564 if (i > 0) 3565 putchar('\n'); 3566 printf(" %03x:", i); 3567 } 3568 vs = re->vs[i] & VERSYM_VERSION; 3569 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3570 warnx("invalid versym version index %u", re->vs[i]); 3571 break; 3572 } 3573 if (re->vs[i] & VERSYM_HIDDEN) 3574 printf(" %3xh %-12s ", vs, 3575 re->ver[re->vs[i] & VERSYM_VERSION].name); 3576 else 3577 printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name); 3578 } 3579 putchar('\n'); 3580 } 3581 3582 static void 3583 dump_ver(struct readelf *re) 3584 { 3585 3586 if (re->vs_s && re->ver && re->vs) 3587 dump_versym(re); 3588 if (re->vd_s) 3589 dump_verdef(re, 1); 3590 if (re->vn_s) 3591 dump_verneed(re, 1); 3592 } 3593 3594 static void 3595 search_ver(struct readelf *re) 3596 { 3597 struct section *s; 3598 Elf_Data *d; 3599 int elferr, i; 3600 3601 for (i = 0; (size_t) i < re->shnum; i++) { 3602 s = &re->sl[i]; 3603 if (s->type == SHT_SUNW_versym) 3604 re->vs_s = s; 3605 if (s->type == SHT_SUNW_verneed) 3606 re->vn_s = s; 3607 if (s->type == SHT_SUNW_verdef) 3608 re->vd_s = s; 3609 } 3610 if (re->vd_s) 3611 dump_verdef(re, 0); 3612 if (re->vn_s) 3613 dump_verneed(re, 0); 3614 if (re->vs_s && re->ver != NULL) { 3615 (void) elf_errno(); 3616 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) { 3617 elferr = elf_errno(); 3618 if (elferr != 0) 3619 warnx("elf_getdata failed: %s", 3620 elf_errmsg(elferr)); 3621 return; 3622 } 3623 if (d->d_size == 0) 3624 return; 3625 re->vs = d->d_buf; 3626 re->vs_sz = d->d_size / sizeof(Elf32_Half); 3627 } 3628 } 3629 3630 #undef Elf_Verdef 3631 #undef Elf_Verdaux 3632 #undef Elf_Verneed 3633 #undef Elf_Vernaux 3634 #undef SAVE_VERSION_NAME 3635 3636 /* 3637 * Elf32_Lib and Elf64_Lib are identical. 3638 */ 3639 #define Elf_Lib Elf32_Lib 3640 3641 static void 3642 dump_liblist(struct readelf *re) 3643 { 3644 struct section *s; 3645 struct tm *t; 3646 time_t ti; 3647 char tbuf[20]; 3648 Elf_Data *d; 3649 Elf_Lib *lib; 3650 int i, j, k, elferr, first, len; 3651 3652 for (i = 0; (size_t) i < re->shnum; i++) { 3653 s = &re->sl[i]; 3654 if (s->type != SHT_GNU_LIBLIST) 3655 continue; 3656 if (s->link >= re->shnum) 3657 continue; 3658 (void) elf_errno(); 3659 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3660 elferr = elf_errno(); 3661 if (elferr != 0) 3662 warnx("elf_getdata failed: %s", 3663 elf_errmsg(elferr)); 3664 continue; 3665 } 3666 if (d->d_size <= 0) 3667 continue; 3668 lib = d->d_buf; 3669 if (!get_ent_count(s, &len)) 3670 continue; 3671 printf("\nLibrary list section '%s' ", s->name); 3672 printf("contains %d entries:\n", len); 3673 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp", 3674 "Checksum", "Version", "Flags"); 3675 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) { 3676 printf("%3d: ", j); 3677 printf("%-20.20s ", 3678 get_string(re, s->link, lib->l_name)); 3679 ti = lib->l_time_stamp; 3680 t = gmtime(&ti); 3681 snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d" 3682 ":%2d", t->tm_year + 1900, t->tm_mon + 1, 3683 t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec); 3684 printf("%-19.19s ", tbuf); 3685 printf("0x%08x ", lib->l_checksum); 3686 printf("%-7d %#x", lib->l_version, lib->l_flags); 3687 if (lib->l_flags != 0) { 3688 first = 1; 3689 putchar('('); 3690 for (k = 0; l_flag[k].name != NULL; k++) { 3691 if ((l_flag[k].value & lib->l_flags) == 3692 0) 3693 continue; 3694 if (!first) 3695 putchar(','); 3696 else 3697 first = 0; 3698 printf("%s", l_flag[k].name); 3699 } 3700 putchar(')'); 3701 } 3702 putchar('\n'); 3703 lib++; 3704 } 3705 } 3706 } 3707 3708 #undef Elf_Lib 3709 3710 static void 3711 dump_section_groups(struct readelf *re) 3712 { 3713 struct section *s; 3714 const char *symname; 3715 Elf_Data *d; 3716 uint32_t *w; 3717 int i, j, elferr; 3718 size_t n; 3719 3720 for (i = 0; (size_t) i < re->shnum; i++) { 3721 s = &re->sl[i]; 3722 if (s->type != SHT_GROUP) 3723 continue; 3724 if (s->link >= re->shnum) 3725 continue; 3726 (void) elf_errno(); 3727 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3728 elferr = elf_errno(); 3729 if (elferr != 0) 3730 warnx("elf_getdata failed: %s", 3731 elf_errmsg(elferr)); 3732 continue; 3733 } 3734 if (d->d_size <= 0) 3735 continue; 3736 3737 w = d->d_buf; 3738 3739 /* We only support COMDAT section. */ 3740 #ifndef GRP_COMDAT 3741 #define GRP_COMDAT 0x1 3742 #endif 3743 if ((*w++ & GRP_COMDAT) == 0) 3744 return; 3745 3746 if (s->entsize == 0) 3747 s->entsize = 4; 3748 3749 symname = get_symbol_name(re, s->link, s->info); 3750 n = s->sz / s->entsize; 3751 if (n-- < 1) 3752 return; 3753 3754 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju" 3755 " sections:\n", i, s->name, symname, (uintmax_t)n); 3756 printf(" %-10.10s %s\n", "[Index]", "Name"); 3757 for (j = 0; (size_t) j < n; j++, w++) { 3758 if (*w >= re->shnum) { 3759 warnx("invalid section index: %u", *w); 3760 continue; 3761 } 3762 printf(" [%5u] %s\n", *w, re->sl[*w].name); 3763 } 3764 } 3765 } 3766 3767 static uint8_t * 3768 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe) 3769 { 3770 uint64_t val; 3771 3772 /* 3773 * According to ARM EABI: For tags > 32, even numbered tags have 3774 * a ULEB128 param and odd numbered ones have NUL-terminated 3775 * string param. This rule probably also applies for tags <= 32 3776 * if the object arch is not ARM. 3777 */ 3778 3779 printf(" Tag_unknown_%ju: ", (uintmax_t) tag); 3780 3781 if (tag & 1) { 3782 printf("%s\n", (char *) p); 3783 p += strlen((char *) p) + 1; 3784 } else { 3785 val = _decode_uleb128(&p, pe); 3786 printf("%ju\n", (uintmax_t) val); 3787 } 3788 3789 return (p); 3790 } 3791 3792 static uint8_t * 3793 dump_compatibility_tag(uint8_t *p, uint8_t *pe) 3794 { 3795 uint64_t val; 3796 3797 val = _decode_uleb128(&p, pe); 3798 printf("flag = %ju, vendor = %s\n", (uintmax_t) val, p); 3799 p += strlen((char *) p) + 1; 3800 3801 return (p); 3802 } 3803 3804 static void 3805 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 3806 { 3807 uint64_t tag, val; 3808 size_t i; 3809 int found, desc; 3810 3811 (void) re; 3812 3813 while (p < pe) { 3814 tag = _decode_uleb128(&p, pe); 3815 found = desc = 0; 3816 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]); 3817 i++) { 3818 if (tag == aeabi_tags[i].tag) { 3819 found = 1; 3820 printf(" %s: ", aeabi_tags[i].s_tag); 3821 if (aeabi_tags[i].get_desc) { 3822 desc = 1; 3823 val = _decode_uleb128(&p, pe); 3824 printf("%s\n", 3825 aeabi_tags[i].get_desc(val)); 3826 } 3827 break; 3828 } 3829 if (tag < aeabi_tags[i].tag) 3830 break; 3831 } 3832 if (!found) { 3833 p = dump_unknown_tag(tag, p, pe); 3834 continue; 3835 } 3836 if (desc) 3837 continue; 3838 3839 switch (tag) { 3840 case 4: /* Tag_CPU_raw_name */ 3841 case 5: /* Tag_CPU_name */ 3842 case 67: /* Tag_conformance */ 3843 printf("%s\n", (char *) p); 3844 p += strlen((char *) p) + 1; 3845 break; 3846 case 32: /* Tag_compatibility */ 3847 p = dump_compatibility_tag(p, pe); 3848 break; 3849 case 64: /* Tag_nodefaults */ 3850 /* ignored, written as 0. */ 3851 (void) _decode_uleb128(&p, pe); 3852 printf("True\n"); 3853 break; 3854 case 65: /* Tag_also_compatible_with */ 3855 val = _decode_uleb128(&p, pe); 3856 /* Must be Tag_CPU_arch */ 3857 if (val != 6) { 3858 printf("unknown\n"); 3859 break; 3860 } 3861 val = _decode_uleb128(&p, pe); 3862 printf("%s\n", aeabi_cpu_arch(val)); 3863 /* Skip NUL terminator. */ 3864 p++; 3865 break; 3866 default: 3867 putchar('\n'); 3868 break; 3869 } 3870 } 3871 } 3872 3873 #ifndef Tag_GNU_MIPS_ABI_FP 3874 #define Tag_GNU_MIPS_ABI_FP 4 3875 #endif 3876 3877 static void 3878 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 3879 { 3880 uint64_t tag, val; 3881 3882 (void) re; 3883 3884 while (p < pe) { 3885 tag = _decode_uleb128(&p, pe); 3886 switch (tag) { 3887 case Tag_GNU_MIPS_ABI_FP: 3888 val = _decode_uleb128(&p, pe); 3889 printf(" Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val)); 3890 break; 3891 case 32: /* Tag_compatibility */ 3892 p = dump_compatibility_tag(p, pe); 3893 break; 3894 default: 3895 p = dump_unknown_tag(tag, p, pe); 3896 break; 3897 } 3898 } 3899 } 3900 3901 #ifndef Tag_GNU_Power_ABI_FP 3902 #define Tag_GNU_Power_ABI_FP 4 3903 #endif 3904 3905 #ifndef Tag_GNU_Power_ABI_Vector 3906 #define Tag_GNU_Power_ABI_Vector 8 3907 #endif 3908 3909 static void 3910 dump_ppc_attributes(uint8_t *p, uint8_t *pe) 3911 { 3912 uint64_t tag, val; 3913 3914 while (p < pe) { 3915 tag = _decode_uleb128(&p, pe); 3916 switch (tag) { 3917 case Tag_GNU_Power_ABI_FP: 3918 val = _decode_uleb128(&p, pe); 3919 printf(" Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val)); 3920 break; 3921 case Tag_GNU_Power_ABI_Vector: 3922 val = _decode_uleb128(&p, pe); 3923 printf(" Tag_GNU_Power_ABI_Vector: %s\n", 3924 ppc_abi_vector(val)); 3925 break; 3926 case 32: /* Tag_compatibility */ 3927 p = dump_compatibility_tag(p, pe); 3928 break; 3929 default: 3930 p = dump_unknown_tag(tag, p, pe); 3931 break; 3932 } 3933 } 3934 } 3935 3936 static void 3937 dump_attributes(struct readelf *re) 3938 { 3939 struct section *s; 3940 Elf_Data *d; 3941 uint8_t *p, *pe, *sp; 3942 size_t len, seclen, nlen, sublen; 3943 uint64_t val; 3944 int tag, i, elferr; 3945 3946 for (i = 0; (size_t) i < re->shnum; i++) { 3947 s = &re->sl[i]; 3948 if (s->type != SHT_GNU_ATTRIBUTES && 3949 (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3)) 3950 continue; 3951 (void) elf_errno(); 3952 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 3953 elferr = elf_errno(); 3954 if (elferr != 0) 3955 warnx("elf_rawdata failed: %s", 3956 elf_errmsg(elferr)); 3957 continue; 3958 } 3959 if (d->d_size <= 0) 3960 continue; 3961 p = d->d_buf; 3962 pe = p + d->d_size; 3963 if (*p != 'A') { 3964 printf("Unknown Attribute Section Format: %c\n", 3965 (char) *p); 3966 continue; 3967 } 3968 len = d->d_size - 1; 3969 p++; 3970 while (len > 0) { 3971 if (len < 4) { 3972 warnx("truncated attribute section length"); 3973 return; 3974 } 3975 seclen = re->dw_decode(&p, 4); 3976 if (seclen > len) { 3977 warnx("invalid attribute section length"); 3978 return; 3979 } 3980 len -= seclen; 3981 nlen = strlen((char *) p) + 1; 3982 if (nlen + 4 > seclen) { 3983 warnx("invalid attribute section name"); 3984 return; 3985 } 3986 printf("Attribute Section: %s\n", (char *) p); 3987 p += nlen; 3988 seclen -= nlen + 4; 3989 while (seclen > 0) { 3990 sp = p; 3991 tag = *p++; 3992 sublen = re->dw_decode(&p, 4); 3993 if (sublen > seclen) { 3994 warnx("invalid attribute sub-section" 3995 " length"); 3996 return; 3997 } 3998 seclen -= sublen; 3999 printf("%s", top_tag(tag)); 4000 if (tag == 2 || tag == 3) { 4001 putchar(':'); 4002 for (;;) { 4003 val = _decode_uleb128(&p, pe); 4004 if (val == 0) 4005 break; 4006 printf(" %ju", (uintmax_t) val); 4007 } 4008 } 4009 putchar('\n'); 4010 if (re->ehdr.e_machine == EM_ARM && 4011 s->type == SHT_LOPROC + 3) 4012 dump_arm_attributes(re, p, sp + sublen); 4013 else if (re->ehdr.e_machine == EM_MIPS || 4014 re->ehdr.e_machine == EM_MIPS_RS3_LE) 4015 dump_mips_attributes(re, p, 4016 sp + sublen); 4017 else if (re->ehdr.e_machine == EM_PPC) 4018 dump_ppc_attributes(p, sp + sublen); 4019 p = sp + sublen; 4020 } 4021 } 4022 } 4023 } 4024 4025 static void 4026 dump_mips_specific_info(struct readelf *re) 4027 { 4028 struct section *s; 4029 int i, options_found; 4030 4031 options_found = 0; 4032 s = NULL; 4033 for (i = 0; (size_t) i < re->shnum; i++) { 4034 s = &re->sl[i]; 4035 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") || 4036 (s->type == SHT_MIPS_OPTIONS))) { 4037 dump_mips_options(re, s); 4038 options_found = 1; 4039 } 4040 } 4041 4042 /* 4043 * According to SGI mips64 spec, .reginfo should be ignored if 4044 * .MIPS.options section is present. 4045 */ 4046 if (!options_found) { 4047 for (i = 0; (size_t) i < re->shnum; i++) { 4048 s = &re->sl[i]; 4049 if (s->name != NULL && (!strcmp(s->name, ".reginfo") || 4050 (s->type == SHT_MIPS_REGINFO))) 4051 dump_mips_reginfo(re, s); 4052 } 4053 } 4054 } 4055 4056 static void 4057 dump_mips_reginfo(struct readelf *re, struct section *s) 4058 { 4059 Elf_Data *d; 4060 int elferr, len; 4061 4062 (void) elf_errno(); 4063 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4064 elferr = elf_errno(); 4065 if (elferr != 0) 4066 warnx("elf_rawdata failed: %s", 4067 elf_errmsg(elferr)); 4068 return; 4069 } 4070 if (d->d_size <= 0) 4071 return; 4072 if (!get_ent_count(s, &len)) 4073 return; 4074 4075 printf("\nSection '%s' contains %d entries:\n", s->name, len); 4076 dump_mips_odk_reginfo(re, d->d_buf, d->d_size); 4077 } 4078 4079 static void 4080 dump_mips_options(struct readelf *re, struct section *s) 4081 { 4082 Elf_Data *d; 4083 uint32_t info; 4084 uint16_t sndx; 4085 uint8_t *p, *pe; 4086 uint8_t kind, size; 4087 int elferr; 4088 4089 (void) elf_errno(); 4090 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4091 elferr = elf_errno(); 4092 if (elferr != 0) 4093 warnx("elf_rawdata failed: %s", 4094 elf_errmsg(elferr)); 4095 return; 4096 } 4097 if (d->d_size == 0) 4098 return; 4099 4100 printf("\nSection %s contains:\n", s->name); 4101 p = d->d_buf; 4102 pe = p + d->d_size; 4103 while (p < pe) { 4104 if (pe - p < 8) { 4105 warnx("Truncated MIPS option header"); 4106 return; 4107 } 4108 kind = re->dw_decode(&p, 1); 4109 size = re->dw_decode(&p, 1); 4110 sndx = re->dw_decode(&p, 2); 4111 info = re->dw_decode(&p, 4); 4112 if (size < 8 || size - 8 > pe - p) { 4113 warnx("Malformed MIPS option header"); 4114 return; 4115 } 4116 size -= 8; 4117 switch (kind) { 4118 case ODK_REGINFO: 4119 dump_mips_odk_reginfo(re, p, size); 4120 break; 4121 case ODK_EXCEPTIONS: 4122 printf(" EXCEPTIONS FPU_MIN: %#x\n", 4123 info & OEX_FPU_MIN); 4124 printf("%11.11s FPU_MAX: %#x\n", "", 4125 info & OEX_FPU_MAX); 4126 dump_mips_option_flags("", mips_exceptions_option, 4127 info); 4128 break; 4129 case ODK_PAD: 4130 printf(" %-10.10s section: %ju\n", "OPAD", 4131 (uintmax_t) sndx); 4132 dump_mips_option_flags("", mips_pad_option, info); 4133 break; 4134 case ODK_HWPATCH: 4135 dump_mips_option_flags("HWPATCH", mips_hwpatch_option, 4136 info); 4137 break; 4138 case ODK_HWAND: 4139 dump_mips_option_flags("HWAND", mips_hwa_option, info); 4140 break; 4141 case ODK_HWOR: 4142 dump_mips_option_flags("HWOR", mips_hwo_option, info); 4143 break; 4144 case ODK_FILL: 4145 printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info); 4146 break; 4147 case ODK_TAGS: 4148 printf(" %-10.10s\n", "TAGS"); 4149 break; 4150 case ODK_GP_GROUP: 4151 printf(" %-10.10s GP group number: %#x\n", "GP_GROUP", 4152 info & 0xFFFF); 4153 if (info & 0x10000) 4154 printf(" %-10.10s GP group is " 4155 "self-contained\n", ""); 4156 break; 4157 case ODK_IDENT: 4158 printf(" %-10.10s default GP group number: %#x\n", 4159 "IDENT", info & 0xFFFF); 4160 if (info & 0x10000) 4161 printf(" %-10.10s default GP group is " 4162 "self-contained\n", ""); 4163 break; 4164 case ODK_PAGESIZE: 4165 printf(" %-10.10s\n", "PAGESIZE"); 4166 break; 4167 default: 4168 break; 4169 } 4170 p += size; 4171 } 4172 } 4173 4174 static void 4175 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info) 4176 { 4177 int first; 4178 4179 first = 1; 4180 for (; opt->desc != NULL; opt++) { 4181 if (info & opt->flag) { 4182 printf(" %-10.10s %s\n", first ? name : "", 4183 opt->desc); 4184 first = 0; 4185 } 4186 } 4187 } 4188 4189 static void 4190 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz) 4191 { 4192 uint32_t ri_gprmask; 4193 uint32_t ri_cprmask[4]; 4194 uint64_t ri_gp_value; 4195 uint8_t *pe; 4196 int i; 4197 4198 pe = p + sz; 4199 while (p < pe) { 4200 ri_gprmask = re->dw_decode(&p, 4); 4201 /* Skip ri_pad padding field for mips64. */ 4202 if (re->ec == ELFCLASS64) 4203 re->dw_decode(&p, 4); 4204 for (i = 0; i < 4; i++) 4205 ri_cprmask[i] = re->dw_decode(&p, 4); 4206 if (re->ec == ELFCLASS32) 4207 ri_gp_value = re->dw_decode(&p, 4); 4208 else 4209 ri_gp_value = re->dw_decode(&p, 8); 4210 printf(" %s ", option_kind(ODK_REGINFO)); 4211 printf("ri_gprmask: 0x%08jx\n", (uintmax_t) ri_gprmask); 4212 for (i = 0; i < 4; i++) 4213 printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i, 4214 (uintmax_t) ri_cprmask[i]); 4215 printf("%12.12s", ""); 4216 printf("ri_gp_value: %#jx\n", (uintmax_t) ri_gp_value); 4217 } 4218 } 4219 4220 static void 4221 dump_arch_specific_info(struct readelf *re) 4222 { 4223 4224 dump_liblist(re); 4225 dump_attributes(re); 4226 4227 switch (re->ehdr.e_machine) { 4228 case EM_MIPS: 4229 case EM_MIPS_RS3_LE: 4230 dump_mips_specific_info(re); 4231 default: 4232 break; 4233 } 4234 } 4235 4236 static const char * 4237 dwarf_regname(struct readelf *re, unsigned int num) 4238 { 4239 static char rx[32]; 4240 const char *rn; 4241 4242 if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL) 4243 return (rn); 4244 4245 snprintf(rx, sizeof(rx), "r%u", num); 4246 4247 return (rx); 4248 } 4249 4250 static void 4251 dump_dwarf_line(struct readelf *re) 4252 { 4253 struct section *s; 4254 Dwarf_Die die; 4255 Dwarf_Error de; 4256 Dwarf_Half tag, version, pointer_size; 4257 Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize; 4258 Dwarf_Small minlen, defstmt, lrange, opbase, oplen; 4259 Elf_Data *d; 4260 char *pn; 4261 uint64_t address, file, line, column, isa, opsize, udelta; 4262 int64_t sdelta; 4263 uint8_t *p, *pe; 4264 int8_t lbase; 4265 int i, is_stmt, dwarf_size, elferr, ret; 4266 4267 printf("\nDump of debug contents of section .debug_line:\n"); 4268 4269 s = NULL; 4270 for (i = 0; (size_t) i < re->shnum; i++) { 4271 s = &re->sl[i]; 4272 if (s->name != NULL && !strcmp(s->name, ".debug_line")) 4273 break; 4274 } 4275 if ((size_t) i >= re->shnum) 4276 return; 4277 4278 (void) elf_errno(); 4279 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4280 elferr = elf_errno(); 4281 if (elferr != 0) 4282 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 4283 return; 4284 } 4285 if (d->d_size <= 0) 4286 return; 4287 4288 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4289 NULL, &de)) == DW_DLV_OK) { 4290 die = NULL; 4291 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) { 4292 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4293 warnx("dwarf_tag failed: %s", 4294 dwarf_errmsg(de)); 4295 return; 4296 } 4297 /* XXX: What about DW_TAG_partial_unit? */ 4298 if (tag == DW_TAG_compile_unit) 4299 break; 4300 } 4301 if (die == NULL) { 4302 warnx("could not find DW_TAG_compile_unit die"); 4303 return; 4304 } 4305 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset, 4306 &de) != DW_DLV_OK) 4307 continue; 4308 4309 length = re->dw_read(d, &offset, 4); 4310 if (length == 0xffffffff) { 4311 dwarf_size = 8; 4312 length = re->dw_read(d, &offset, 8); 4313 } else 4314 dwarf_size = 4; 4315 4316 if (length > d->d_size - offset) { 4317 warnx("invalid .dwarf_line section"); 4318 continue; 4319 } 4320 4321 endoff = offset + length; 4322 pe = (uint8_t *) d->d_buf + endoff; 4323 version = re->dw_read(d, &offset, 2); 4324 hdrlen = re->dw_read(d, &offset, dwarf_size); 4325 minlen = re->dw_read(d, &offset, 1); 4326 defstmt = re->dw_read(d, &offset, 1); 4327 lbase = re->dw_read(d, &offset, 1); 4328 lrange = re->dw_read(d, &offset, 1); 4329 opbase = re->dw_read(d, &offset, 1); 4330 4331 printf("\n"); 4332 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 4333 printf(" DWARF version:\t\t%u\n", version); 4334 printf(" Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen); 4335 printf(" Minimum Instruction Length:\t%u\n", minlen); 4336 printf(" Initial value of 'is_stmt':\t%u\n", defstmt); 4337 printf(" Line Base:\t\t\t%d\n", lbase); 4338 printf(" Line Range:\t\t\t%u\n", lrange); 4339 printf(" Opcode Base:\t\t\t%u\n", opbase); 4340 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de); 4341 printf(" (Pointer size:\t\t%u)\n", pointer_size); 4342 4343 printf("\n"); 4344 printf(" Opcodes:\n"); 4345 for (i = 1; i < opbase; i++) { 4346 oplen = re->dw_read(d, &offset, 1); 4347 printf(" Opcode %d has %u args\n", i, oplen); 4348 } 4349 4350 printf("\n"); 4351 printf(" The Directory Table:\n"); 4352 p = (uint8_t *) d->d_buf + offset; 4353 while (*p != '\0') { 4354 printf(" %s\n", (char *) p); 4355 p += strlen((char *) p) + 1; 4356 } 4357 4358 p++; 4359 printf("\n"); 4360 printf(" The File Name Table:\n"); 4361 printf(" Entry\tDir\tTime\tSize\tName\n"); 4362 i = 0; 4363 while (*p != '\0') { 4364 i++; 4365 pn = (char *) p; 4366 p += strlen(pn) + 1; 4367 dirndx = _decode_uleb128(&p, pe); 4368 mtime = _decode_uleb128(&p, pe); 4369 fsize = _decode_uleb128(&p, pe); 4370 printf(" %d\t%ju\t%ju\t%ju\t%s\n", i, 4371 (uintmax_t) dirndx, (uintmax_t) mtime, 4372 (uintmax_t) fsize, pn); 4373 } 4374 4375 #define RESET_REGISTERS \ 4376 do { \ 4377 address = 0; \ 4378 file = 1; \ 4379 line = 1; \ 4380 column = 0; \ 4381 is_stmt = defstmt; \ 4382 } while(0) 4383 4384 #define LINE(x) (lbase + (((x) - opbase) % lrange)) 4385 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen) 4386 4387 p++; 4388 printf("\n"); 4389 printf(" Line Number Statements:\n"); 4390 4391 RESET_REGISTERS; 4392 4393 while (p < pe) { 4394 4395 if (*p == 0) { 4396 /* 4397 * Extended Opcodes. 4398 */ 4399 p++; 4400 opsize = _decode_uleb128(&p, pe); 4401 printf(" Extended opcode %u: ", *p); 4402 switch (*p) { 4403 case DW_LNE_end_sequence: 4404 p++; 4405 RESET_REGISTERS; 4406 printf("End of Sequence\n"); 4407 break; 4408 case DW_LNE_set_address: 4409 p++; 4410 address = re->dw_decode(&p, 4411 pointer_size); 4412 printf("set Address to %#jx\n", 4413 (uintmax_t) address); 4414 break; 4415 case DW_LNE_define_file: 4416 p++; 4417 pn = (char *) p; 4418 p += strlen(pn) + 1; 4419 dirndx = _decode_uleb128(&p, pe); 4420 mtime = _decode_uleb128(&p, pe); 4421 fsize = _decode_uleb128(&p, pe); 4422 printf("define new file: %s\n", pn); 4423 break; 4424 default: 4425 /* Unrecognized extened opcodes. */ 4426 p += opsize; 4427 printf("unknown opcode\n"); 4428 } 4429 } else if (*p > 0 && *p < opbase) { 4430 /* 4431 * Standard Opcodes. 4432 */ 4433 switch(*p++) { 4434 case DW_LNS_copy: 4435 printf(" Copy\n"); 4436 break; 4437 case DW_LNS_advance_pc: 4438 udelta = _decode_uleb128(&p, pe) * 4439 minlen; 4440 address += udelta; 4441 printf(" Advance PC by %ju to %#jx\n", 4442 (uintmax_t) udelta, 4443 (uintmax_t) address); 4444 break; 4445 case DW_LNS_advance_line: 4446 sdelta = _decode_sleb128(&p, pe); 4447 line += sdelta; 4448 printf(" Advance Line by %jd to %ju\n", 4449 (intmax_t) sdelta, 4450 (uintmax_t) line); 4451 break; 4452 case DW_LNS_set_file: 4453 file = _decode_uleb128(&p, pe); 4454 printf(" Set File to %ju\n", 4455 (uintmax_t) file); 4456 break; 4457 case DW_LNS_set_column: 4458 column = _decode_uleb128(&p, pe); 4459 printf(" Set Column to %ju\n", 4460 (uintmax_t) column); 4461 break; 4462 case DW_LNS_negate_stmt: 4463 is_stmt = !is_stmt; 4464 printf(" Set is_stmt to %d\n", is_stmt); 4465 break; 4466 case DW_LNS_set_basic_block: 4467 printf(" Set basic block flag\n"); 4468 break; 4469 case DW_LNS_const_add_pc: 4470 address += ADDRESS(255); 4471 printf(" Advance PC by constant %ju" 4472 " to %#jx\n", 4473 (uintmax_t) ADDRESS(255), 4474 (uintmax_t) address); 4475 break; 4476 case DW_LNS_fixed_advance_pc: 4477 udelta = re->dw_decode(&p, 2); 4478 address += udelta; 4479 printf(" Advance PC by fixed value " 4480 "%ju to %#jx\n", 4481 (uintmax_t) udelta, 4482 (uintmax_t) address); 4483 break; 4484 case DW_LNS_set_prologue_end: 4485 printf(" Set prologue end flag\n"); 4486 break; 4487 case DW_LNS_set_epilogue_begin: 4488 printf(" Set epilogue begin flag\n"); 4489 break; 4490 case DW_LNS_set_isa: 4491 isa = _decode_uleb128(&p, pe); 4492 printf(" Set isa to %ju\n", 4493 (uintmax_t) isa); 4494 break; 4495 default: 4496 /* Unrecognized extended opcodes. */ 4497 printf(" Unknown extended opcode %u\n", 4498 *(p - 1)); 4499 break; 4500 } 4501 4502 } else { 4503 /* 4504 * Special Opcodes. 4505 */ 4506 line += LINE(*p); 4507 address += ADDRESS(*p); 4508 printf(" Special opcode %u: advance Address " 4509 "by %ju to %#jx and Line by %jd to %ju\n", 4510 *p - opbase, (uintmax_t) ADDRESS(*p), 4511 (uintmax_t) address, (intmax_t) LINE(*p), 4512 (uintmax_t) line); 4513 p++; 4514 } 4515 4516 4517 } 4518 } 4519 if (ret == DW_DLV_ERROR) 4520 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 4521 4522 #undef RESET_REGISTERS 4523 #undef LINE 4524 #undef ADDRESS 4525 } 4526 4527 static void 4528 dump_dwarf_line_decoded(struct readelf *re) 4529 { 4530 Dwarf_Die die; 4531 Dwarf_Line *linebuf, ln; 4532 Dwarf_Addr lineaddr; 4533 Dwarf_Signed linecount, srccount; 4534 Dwarf_Unsigned lineno, fn; 4535 Dwarf_Error de; 4536 const char *dir, *file; 4537 char **srcfiles; 4538 int i, ret; 4539 4540 printf("Decoded dump of debug contents of section .debug_line:\n\n"); 4541 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4542 NULL, &de)) == DW_DLV_OK) { 4543 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK) 4544 continue; 4545 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) != 4546 DW_DLV_OK) 4547 file = NULL; 4548 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) != 4549 DW_DLV_OK) 4550 dir = NULL; 4551 printf("CU: "); 4552 if (dir && file) 4553 printf("%s/", dir); 4554 if (file) 4555 printf("%s", file); 4556 putchar('\n'); 4557 printf("%-37s %11s %s\n", "Filename", "Line Number", 4558 "Starting Address"); 4559 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK) 4560 continue; 4561 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK) 4562 continue; 4563 for (i = 0; i < linecount; i++) { 4564 ln = linebuf[i]; 4565 if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK) 4566 continue; 4567 if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK) 4568 continue; 4569 if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK) 4570 continue; 4571 printf("%-37s %11ju %#18jx\n", 4572 basename(srcfiles[fn - 1]), (uintmax_t) lineno, 4573 (uintmax_t) lineaddr); 4574 } 4575 putchar('\n'); 4576 } 4577 } 4578 4579 static void 4580 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level) 4581 { 4582 Dwarf_Attribute *attr_list; 4583 Dwarf_Die ret_die; 4584 Dwarf_Off dieoff, cuoff, culen, attroff; 4585 Dwarf_Unsigned ate, lang, v_udata, v_sig; 4586 Dwarf_Signed attr_count, v_sdata; 4587 Dwarf_Off v_off; 4588 Dwarf_Addr v_addr; 4589 Dwarf_Half tag, attr, form; 4590 Dwarf_Block *v_block; 4591 Dwarf_Bool v_bool, is_info; 4592 Dwarf_Sig8 v_sig8; 4593 Dwarf_Error de; 4594 Dwarf_Ptr v_expr; 4595 const char *tag_str, *attr_str, *ate_str, *lang_str; 4596 char unk_tag[32], unk_attr[32]; 4597 char *v_str; 4598 uint8_t *b, *p; 4599 int i, j, abc, ret; 4600 4601 if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) { 4602 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de)); 4603 goto cont_search; 4604 } 4605 4606 printf(" <%d><%jx>: ", level, (uintmax_t) dieoff); 4607 4608 if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) { 4609 warnx("dwarf_die_CU_offset_range failed: %s", 4610 dwarf_errmsg(de)); 4611 cuoff = 0; 4612 } 4613 4614 abc = dwarf_die_abbrev_code(die); 4615 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4616 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 4617 goto cont_search; 4618 } 4619 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 4620 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag); 4621 tag_str = unk_tag; 4622 } 4623 4624 printf("Abbrev Number: %d (%s)\n", abc, tag_str); 4625 4626 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 4627 DW_DLV_OK) { 4628 if (ret == DW_DLV_ERROR) 4629 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 4630 goto cont_search; 4631 } 4632 4633 for (i = 0; i < attr_count; i++) { 4634 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 4635 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 4636 continue; 4637 } 4638 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 4639 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 4640 continue; 4641 } 4642 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) { 4643 snprintf(unk_attr, sizeof(unk_attr), 4644 "[Unknown AT: %#x]", attr); 4645 attr_str = unk_attr; 4646 } 4647 if (dwarf_attroffset(attr_list[i], &attroff, &de) != 4648 DW_DLV_OK) { 4649 warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de)); 4650 attroff = 0; 4651 } 4652 printf(" <%jx> %-18s: ", (uintmax_t) attroff, attr_str); 4653 switch (form) { 4654 case DW_FORM_ref_addr: 4655 case DW_FORM_sec_offset: 4656 if (dwarf_global_formref(attr_list[i], &v_off, &de) != 4657 DW_DLV_OK) { 4658 warnx("dwarf_global_formref failed: %s", 4659 dwarf_errmsg(de)); 4660 continue; 4661 } 4662 if (form == DW_FORM_ref_addr) 4663 printf("<0x%jx>", (uintmax_t) v_off); 4664 else 4665 printf("0x%jx", (uintmax_t) v_off); 4666 break; 4667 4668 case DW_FORM_ref1: 4669 case DW_FORM_ref2: 4670 case DW_FORM_ref4: 4671 case DW_FORM_ref8: 4672 case DW_FORM_ref_udata: 4673 if (dwarf_formref(attr_list[i], &v_off, &de) != 4674 DW_DLV_OK) { 4675 warnx("dwarf_formref failed: %s", 4676 dwarf_errmsg(de)); 4677 continue; 4678 } 4679 v_off += cuoff; 4680 printf("<0x%jx>", (uintmax_t) v_off); 4681 break; 4682 4683 case DW_FORM_addr: 4684 if (dwarf_formaddr(attr_list[i], &v_addr, &de) != 4685 DW_DLV_OK) { 4686 warnx("dwarf_formaddr failed: %s", 4687 dwarf_errmsg(de)); 4688 continue; 4689 } 4690 printf("%#jx", (uintmax_t) v_addr); 4691 break; 4692 4693 case DW_FORM_data1: 4694 case DW_FORM_data2: 4695 case DW_FORM_data4: 4696 case DW_FORM_data8: 4697 case DW_FORM_udata: 4698 if (dwarf_formudata(attr_list[i], &v_udata, &de) != 4699 DW_DLV_OK) { 4700 warnx("dwarf_formudata failed: %s", 4701 dwarf_errmsg(de)); 4702 continue; 4703 } 4704 if (attr == DW_AT_high_pc) 4705 printf("0x%jx", (uintmax_t) v_udata); 4706 else 4707 printf("%ju", (uintmax_t) v_udata); 4708 break; 4709 4710 case DW_FORM_sdata: 4711 if (dwarf_formsdata(attr_list[i], &v_sdata, &de) != 4712 DW_DLV_OK) { 4713 warnx("dwarf_formudata failed: %s", 4714 dwarf_errmsg(de)); 4715 continue; 4716 } 4717 printf("%jd", (intmax_t) v_sdata); 4718 break; 4719 4720 case DW_FORM_flag: 4721 if (dwarf_formflag(attr_list[i], &v_bool, &de) != 4722 DW_DLV_OK) { 4723 warnx("dwarf_formflag failed: %s", 4724 dwarf_errmsg(de)); 4725 continue; 4726 } 4727 printf("%jd", (intmax_t) v_bool); 4728 break; 4729 4730 case DW_FORM_flag_present: 4731 putchar('1'); 4732 break; 4733 4734 case DW_FORM_string: 4735 case DW_FORM_strp: 4736 if (dwarf_formstring(attr_list[i], &v_str, &de) != 4737 DW_DLV_OK) { 4738 warnx("dwarf_formstring failed: %s", 4739 dwarf_errmsg(de)); 4740 continue; 4741 } 4742 if (form == DW_FORM_string) 4743 printf("%s", v_str); 4744 else 4745 printf("(indirect string) %s", v_str); 4746 break; 4747 4748 case DW_FORM_block: 4749 case DW_FORM_block1: 4750 case DW_FORM_block2: 4751 case DW_FORM_block4: 4752 if (dwarf_formblock(attr_list[i], &v_block, &de) != 4753 DW_DLV_OK) { 4754 warnx("dwarf_formblock failed: %s", 4755 dwarf_errmsg(de)); 4756 continue; 4757 } 4758 printf("%ju byte block:", (uintmax_t) v_block->bl_len); 4759 b = v_block->bl_data; 4760 for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++) 4761 printf(" %x", b[j]); 4762 printf("\t("); 4763 dump_dwarf_block(re, v_block->bl_data, v_block->bl_len); 4764 putchar(')'); 4765 break; 4766 4767 case DW_FORM_exprloc: 4768 if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr, 4769 &de) != DW_DLV_OK) { 4770 warnx("dwarf_formexprloc failed: %s", 4771 dwarf_errmsg(de)); 4772 continue; 4773 } 4774 printf("%ju byte block:", (uintmax_t) v_udata); 4775 b = v_expr; 4776 for (j = 0; (Dwarf_Unsigned) j < v_udata; j++) 4777 printf(" %x", b[j]); 4778 printf("\t("); 4779 dump_dwarf_block(re, v_expr, v_udata); 4780 putchar(')'); 4781 break; 4782 4783 case DW_FORM_ref_sig8: 4784 if (dwarf_formsig8(attr_list[i], &v_sig8, &de) != 4785 DW_DLV_OK) { 4786 warnx("dwarf_formsig8 failed: %s", 4787 dwarf_errmsg(de)); 4788 continue; 4789 } 4790 p = (uint8_t *)(uintptr_t) &v_sig8.signature[0]; 4791 v_sig = re->dw_decode(&p, 8); 4792 printf("signature: 0x%jx", (uintmax_t) v_sig); 4793 } 4794 switch (attr) { 4795 case DW_AT_encoding: 4796 if (dwarf_attrval_unsigned(die, attr, &ate, &de) != 4797 DW_DLV_OK) 4798 break; 4799 if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK) 4800 ate_str = "DW_ATE_UNKNOWN"; 4801 printf("\t(%s)", &ate_str[strlen("DW_ATE_")]); 4802 break; 4803 4804 case DW_AT_language: 4805 if (dwarf_attrval_unsigned(die, attr, &lang, &de) != 4806 DW_DLV_OK) 4807 break; 4808 if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK) 4809 break; 4810 printf("\t(%s)", &lang_str[strlen("DW_LANG_")]); 4811 break; 4812 4813 case DW_AT_location: 4814 case DW_AT_string_length: 4815 case DW_AT_return_addr: 4816 case DW_AT_data_member_location: 4817 case DW_AT_frame_base: 4818 case DW_AT_segment: 4819 case DW_AT_static_link: 4820 case DW_AT_use_location: 4821 case DW_AT_vtable_elem_location: 4822 switch (form) { 4823 case DW_FORM_data4: 4824 case DW_FORM_data8: 4825 case DW_FORM_sec_offset: 4826 printf("\t(location list)"); 4827 break; 4828 default: 4829 break; 4830 } 4831 4832 default: 4833 break; 4834 } 4835 putchar('\n'); 4836 } 4837 4838 4839 cont_search: 4840 /* Search children. */ 4841 ret = dwarf_child(die, &ret_die, &de); 4842 if (ret == DW_DLV_ERROR) 4843 warnx("dwarf_child: %s", dwarf_errmsg(de)); 4844 else if (ret == DW_DLV_OK) 4845 dump_dwarf_die(re, ret_die, level + 1); 4846 4847 /* Search sibling. */ 4848 is_info = dwarf_get_die_infotypes_flag(die); 4849 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 4850 if (ret == DW_DLV_ERROR) 4851 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 4852 else if (ret == DW_DLV_OK) 4853 dump_dwarf_die(re, ret_die, level); 4854 4855 dwarf_dealloc(re->dbg, die, DW_DLA_DIE); 4856 } 4857 4858 static void 4859 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize, 4860 Dwarf_Half ver) 4861 { 4862 4863 re->cu_psize = psize; 4864 re->cu_osize = osize; 4865 re->cu_ver = ver; 4866 } 4867 4868 static void 4869 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info) 4870 { 4871 struct section *s; 4872 Dwarf_Die die; 4873 Dwarf_Error de; 4874 Dwarf_Half tag, version, pointer_size, off_size; 4875 Dwarf_Off cu_offset, cu_length; 4876 Dwarf_Off aboff; 4877 Dwarf_Unsigned typeoff; 4878 Dwarf_Sig8 sig8; 4879 Dwarf_Unsigned sig; 4880 uint8_t *p; 4881 const char *sn; 4882 int i, ret; 4883 4884 sn = is_info ? ".debug_info" : ".debug_types"; 4885 4886 s = NULL; 4887 for (i = 0; (size_t) i < re->shnum; i++) { 4888 s = &re->sl[i]; 4889 if (s->name != NULL && !strcmp(s->name, sn)) 4890 break; 4891 } 4892 if ((size_t) i >= re->shnum) 4893 return; 4894 4895 do { 4896 printf("\nDump of debug contents of section %s:\n", sn); 4897 4898 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL, 4899 &version, &aboff, &pointer_size, &off_size, NULL, &sig8, 4900 &typeoff, NULL, &de)) == DW_DLV_OK) { 4901 set_cu_context(re, pointer_size, off_size, version); 4902 die = NULL; 4903 while (dwarf_siblingof_b(re->dbg, die, &die, is_info, 4904 &de) == DW_DLV_OK) { 4905 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4906 warnx("dwarf_tag failed: %s", 4907 dwarf_errmsg(de)); 4908 continue; 4909 } 4910 /* XXX: What about DW_TAG_partial_unit? */ 4911 if ((is_info && tag == DW_TAG_compile_unit) || 4912 (!is_info && tag == DW_TAG_type_unit)) 4913 break; 4914 } 4915 if (die == NULL && is_info) { 4916 warnx("could not find DW_TAG_compile_unit " 4917 "die"); 4918 continue; 4919 } else if (die == NULL && !is_info) { 4920 warnx("could not find DW_TAG_type_unit die"); 4921 continue; 4922 } 4923 4924 if (dwarf_die_CU_offset_range(die, &cu_offset, 4925 &cu_length, &de) != DW_DLV_OK) { 4926 warnx("dwarf_die_CU_offset failed: %s", 4927 dwarf_errmsg(de)); 4928 continue; 4929 } 4930 4931 cu_length -= off_size == 4 ? 4 : 12; 4932 4933 sig = 0; 4934 if (!is_info) { 4935 p = (uint8_t *)(uintptr_t) &sig8.signature[0]; 4936 sig = re->dw_decode(&p, 8); 4937 } 4938 4939 printf("\n Type Unit @ offset 0x%jx:\n", 4940 (uintmax_t) cu_offset); 4941 printf(" Length:\t\t%#jx (%d-bit)\n", 4942 (uintmax_t) cu_length, off_size == 4 ? 32 : 64); 4943 printf(" Version:\t\t%u\n", version); 4944 printf(" Abbrev Offset:\t0x%jx\n", 4945 (uintmax_t) aboff); 4946 printf(" Pointer Size:\t%u\n", pointer_size); 4947 if (!is_info) { 4948 printf(" Signature:\t\t0x%016jx\n", 4949 (uintmax_t) sig); 4950 printf(" Type Offset:\t0x%jx\n", 4951 (uintmax_t) typeoff); 4952 } 4953 4954 dump_dwarf_die(re, die, 0); 4955 } 4956 if (ret == DW_DLV_ERROR) 4957 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 4958 if (is_info) 4959 break; 4960 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 4961 } 4962 4963 static void 4964 dump_dwarf_abbrev(struct readelf *re) 4965 { 4966 Dwarf_Abbrev ab; 4967 Dwarf_Off aboff, atoff; 4968 Dwarf_Unsigned length, attr_count; 4969 Dwarf_Signed flag, form; 4970 Dwarf_Half tag, attr; 4971 Dwarf_Error de; 4972 const char *tag_str, *attr_str, *form_str; 4973 char unk_tag[32], unk_attr[32], unk_form[32]; 4974 int i, j, ret; 4975 4976 printf("\nContents of section .debug_abbrev:\n\n"); 4977 4978 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff, 4979 NULL, NULL, &de)) == DW_DLV_OK) { 4980 printf(" Number TAG\n"); 4981 i = 0; 4982 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length, 4983 &attr_count, &de)) == DW_DLV_OK) { 4984 if (length == 1) { 4985 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 4986 break; 4987 } 4988 aboff += length; 4989 printf("%4d", ++i); 4990 if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) { 4991 warnx("dwarf_get_abbrev_tag failed: %s", 4992 dwarf_errmsg(de)); 4993 goto next_abbrev; 4994 } 4995 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 4996 snprintf(unk_tag, sizeof(unk_tag), 4997 "[Unknown Tag: %#x]", tag); 4998 tag_str = unk_tag; 4999 } 5000 if (dwarf_get_abbrev_children_flag(ab, &flag, &de) != 5001 DW_DLV_OK) { 5002 warnx("dwarf_get_abbrev_children_flag failed:" 5003 " %s", dwarf_errmsg(de)); 5004 goto next_abbrev; 5005 } 5006 printf(" %s %s\n", tag_str, 5007 flag ? "[has children]" : "[no children]"); 5008 for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) { 5009 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j, 5010 &attr, &form, &atoff, &de) != DW_DLV_OK) { 5011 warnx("dwarf_get_abbrev_entry failed:" 5012 " %s", dwarf_errmsg(de)); 5013 continue; 5014 } 5015 if (dwarf_get_AT_name(attr, &attr_str) != 5016 DW_DLV_OK) { 5017 snprintf(unk_attr, sizeof(unk_attr), 5018 "[Unknown AT: %#x]", attr); 5019 attr_str = unk_attr; 5020 } 5021 if (dwarf_get_FORM_name(form, &form_str) != 5022 DW_DLV_OK) { 5023 snprintf(unk_form, sizeof(unk_form), 5024 "[Unknown Form: %#x]", 5025 (Dwarf_Half) form); 5026 form_str = unk_form; 5027 } 5028 printf(" %-18s %s\n", attr_str, form_str); 5029 } 5030 next_abbrev: 5031 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5032 } 5033 if (ret != DW_DLV_OK) 5034 warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de)); 5035 } 5036 if (ret == DW_DLV_ERROR) 5037 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5038 } 5039 5040 static void 5041 dump_dwarf_pubnames(struct readelf *re) 5042 { 5043 struct section *s; 5044 Dwarf_Off die_off; 5045 Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length; 5046 Dwarf_Signed cnt; 5047 Dwarf_Global *globs; 5048 Dwarf_Half nt_version; 5049 Dwarf_Error de; 5050 Elf_Data *d; 5051 char *glob_name; 5052 int i, dwarf_size, elferr; 5053 5054 printf("\nContents of the .debug_pubnames section:\n"); 5055 5056 s = NULL; 5057 for (i = 0; (size_t) i < re->shnum; i++) { 5058 s = &re->sl[i]; 5059 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames")) 5060 break; 5061 } 5062 if ((size_t) i >= re->shnum) 5063 return; 5064 5065 (void) elf_errno(); 5066 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5067 elferr = elf_errno(); 5068 if (elferr != 0) 5069 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5070 return; 5071 } 5072 if (d->d_size <= 0) 5073 return; 5074 5075 /* Read in .debug_pubnames section table header. */ 5076 offset = 0; 5077 length = re->dw_read(d, &offset, 4); 5078 if (length == 0xffffffff) { 5079 dwarf_size = 8; 5080 length = re->dw_read(d, &offset, 8); 5081 } else 5082 dwarf_size = 4; 5083 5084 if (length > d->d_size - offset) { 5085 warnx("invalid .dwarf_pubnames section"); 5086 return; 5087 } 5088 5089 nt_version = re->dw_read(d, &offset, 2); 5090 nt_cu_offset = re->dw_read(d, &offset, dwarf_size); 5091 nt_cu_length = re->dw_read(d, &offset, dwarf_size); 5092 printf(" Length:\t\t\t\t%ju\n", (uintmax_t) length); 5093 printf(" Version:\t\t\t\t%u\n", nt_version); 5094 printf(" Offset into .debug_info section:\t%ju\n", 5095 (uintmax_t) nt_cu_offset); 5096 printf(" Size of area in .debug_info section:\t%ju\n", 5097 (uintmax_t) nt_cu_length); 5098 5099 if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) { 5100 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de)); 5101 return; 5102 } 5103 5104 printf("\n Offset Name\n"); 5105 for (i = 0; i < cnt; i++) { 5106 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) { 5107 warnx("dwarf_globname failed: %s", dwarf_errmsg(de)); 5108 continue; 5109 } 5110 if (dwarf_global_die_offset(globs[i], &die_off, &de) != 5111 DW_DLV_OK) { 5112 warnx("dwarf_global_die_offset failed: %s", 5113 dwarf_errmsg(de)); 5114 continue; 5115 } 5116 printf(" %-11ju %s\n", (uintmax_t) die_off, glob_name); 5117 } 5118 } 5119 5120 static void 5121 dump_dwarf_aranges(struct readelf *re) 5122 { 5123 struct section *s; 5124 Dwarf_Arange *aranges; 5125 Dwarf_Addr start; 5126 Dwarf_Unsigned offset, length, as_cu_offset; 5127 Dwarf_Off die_off; 5128 Dwarf_Signed cnt; 5129 Dwarf_Half as_version, as_addrsz, as_segsz; 5130 Dwarf_Error de; 5131 Elf_Data *d; 5132 int i, dwarf_size, elferr; 5133 5134 printf("\nContents of section .debug_aranges:\n"); 5135 5136 s = NULL; 5137 for (i = 0; (size_t) i < re->shnum; i++) { 5138 s = &re->sl[i]; 5139 if (s->name != NULL && !strcmp(s->name, ".debug_aranges")) 5140 break; 5141 } 5142 if ((size_t) i >= re->shnum) 5143 return; 5144 5145 (void) elf_errno(); 5146 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5147 elferr = elf_errno(); 5148 if (elferr != 0) 5149 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5150 return; 5151 } 5152 if (d->d_size <= 0) 5153 return; 5154 5155 /* Read in the .debug_aranges section table header. */ 5156 offset = 0; 5157 length = re->dw_read(d, &offset, 4); 5158 if (length == 0xffffffff) { 5159 dwarf_size = 8; 5160 length = re->dw_read(d, &offset, 8); 5161 } else 5162 dwarf_size = 4; 5163 5164 if (length > d->d_size - offset) { 5165 warnx("invalid .dwarf_aranges section"); 5166 return; 5167 } 5168 5169 as_version = re->dw_read(d, &offset, 2); 5170 as_cu_offset = re->dw_read(d, &offset, dwarf_size); 5171 as_addrsz = re->dw_read(d, &offset, 1); 5172 as_segsz = re->dw_read(d, &offset, 1); 5173 5174 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 5175 printf(" Version:\t\t\t%u\n", as_version); 5176 printf(" Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset); 5177 printf(" Pointer Size:\t\t\t%u\n", as_addrsz); 5178 printf(" Segment Size:\t\t\t%u\n", as_segsz); 5179 5180 if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) { 5181 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de)); 5182 return; 5183 } 5184 5185 printf("\n Address Length\n"); 5186 for (i = 0; i < cnt; i++) { 5187 if (dwarf_get_arange_info(aranges[i], &start, &length, 5188 &die_off, &de) != DW_DLV_OK) { 5189 warnx("dwarf_get_arange_info failed: %s", 5190 dwarf_errmsg(de)); 5191 continue; 5192 } 5193 printf(" %08jx %ju\n", (uintmax_t) start, 5194 (uintmax_t) length); 5195 } 5196 } 5197 5198 static void 5199 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) 5200 { 5201 Dwarf_Attribute *attr_list; 5202 Dwarf_Ranges *ranges; 5203 Dwarf_Die ret_die; 5204 Dwarf_Error de; 5205 Dwarf_Addr base0; 5206 Dwarf_Half attr; 5207 Dwarf_Signed attr_count, cnt; 5208 Dwarf_Unsigned off, bytecnt; 5209 int i, j, ret; 5210 5211 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5212 DW_DLV_OK) { 5213 if (ret == DW_DLV_ERROR) 5214 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5215 goto cont_search; 5216 } 5217 5218 for (i = 0; i < attr_count; i++) { 5219 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5220 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5221 continue; 5222 } 5223 if (attr != DW_AT_ranges) 5224 continue; 5225 if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) { 5226 warnx("dwarf_formudata failed: %s", dwarf_errmsg(de)); 5227 continue; 5228 } 5229 if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt, 5230 &bytecnt, &de) != DW_DLV_OK) 5231 continue; 5232 base0 = base; 5233 for (j = 0; j < cnt; j++) { 5234 printf(" %08jx ", (uintmax_t) off); 5235 if (ranges[j].dwr_type == DW_RANGES_END) { 5236 printf("%s\n", "<End of list>"); 5237 continue; 5238 } else if (ranges[j].dwr_type == 5239 DW_RANGES_ADDRESS_SELECTION) { 5240 base0 = ranges[j].dwr_addr2; 5241 continue; 5242 } 5243 if (re->ec == ELFCLASS32) 5244 printf("%08jx %08jx\n", 5245 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5246 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5247 else 5248 printf("%016jx %016jx\n", 5249 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5250 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5251 } 5252 } 5253 5254 cont_search: 5255 /* Search children. */ 5256 ret = dwarf_child(die, &ret_die, &de); 5257 if (ret == DW_DLV_ERROR) 5258 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5259 else if (ret == DW_DLV_OK) 5260 dump_dwarf_ranges_foreach(re, ret_die, base); 5261 5262 /* Search sibling. */ 5263 ret = dwarf_siblingof(re->dbg, die, &ret_die, &de); 5264 if (ret == DW_DLV_ERROR) 5265 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5266 else if (ret == DW_DLV_OK) 5267 dump_dwarf_ranges_foreach(re, ret_die, base); 5268 } 5269 5270 static void 5271 dump_dwarf_ranges(struct readelf *re) 5272 { 5273 Dwarf_Ranges *ranges; 5274 Dwarf_Die die; 5275 Dwarf_Signed cnt; 5276 Dwarf_Unsigned bytecnt; 5277 Dwarf_Half tag; 5278 Dwarf_Error de; 5279 Dwarf_Unsigned lowpc; 5280 int ret; 5281 5282 if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) != 5283 DW_DLV_OK) 5284 return; 5285 5286 printf("Contents of the .debug_ranges section:\n\n"); 5287 if (re->ec == ELFCLASS32) 5288 printf(" %-8s %-8s %s\n", "Offset", "Begin", "End"); 5289 else 5290 printf(" %-8s %-16s %s\n", "Offset", "Begin", "End"); 5291 5292 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5293 NULL, &de)) == DW_DLV_OK) { 5294 die = NULL; 5295 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 5296 continue; 5297 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5298 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5299 continue; 5300 } 5301 /* XXX: What about DW_TAG_partial_unit? */ 5302 lowpc = 0; 5303 if (tag == DW_TAG_compile_unit) { 5304 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc, 5305 &de) != DW_DLV_OK) 5306 lowpc = 0; 5307 } 5308 5309 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc); 5310 } 5311 putchar('\n'); 5312 } 5313 5314 static void 5315 dump_dwarf_macinfo(struct readelf *re) 5316 { 5317 Dwarf_Unsigned offset; 5318 Dwarf_Signed cnt; 5319 Dwarf_Macro_Details *md; 5320 Dwarf_Error de; 5321 const char *mi_str; 5322 char unk_mi[32]; 5323 int i; 5324 5325 #define _MAX_MACINFO_ENTRY 65535 5326 5327 printf("\nContents of section .debug_macinfo:\n\n"); 5328 5329 offset = 0; 5330 while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY, 5331 &cnt, &md, &de) == DW_DLV_OK) { 5332 for (i = 0; i < cnt; i++) { 5333 offset = md[i].dmd_offset + 1; 5334 if (md[i].dmd_type == 0) 5335 break; 5336 if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) != 5337 DW_DLV_OK) { 5338 snprintf(unk_mi, sizeof(unk_mi), 5339 "[Unknown MACINFO: %#x]", md[i].dmd_type); 5340 mi_str = unk_mi; 5341 } 5342 printf(" %s", mi_str); 5343 switch (md[i].dmd_type) { 5344 case DW_MACINFO_define: 5345 case DW_MACINFO_undef: 5346 printf(" - lineno : %jd macro : %s\n", 5347 (intmax_t) md[i].dmd_lineno, 5348 md[i].dmd_macro); 5349 break; 5350 case DW_MACINFO_start_file: 5351 printf(" - lineno : %jd filenum : %jd\n", 5352 (intmax_t) md[i].dmd_lineno, 5353 (intmax_t) md[i].dmd_fileindex); 5354 break; 5355 default: 5356 putchar('\n'); 5357 break; 5358 } 5359 } 5360 } 5361 5362 #undef _MAX_MACINFO_ENTRY 5363 } 5364 5365 static void 5366 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts, 5367 Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc, 5368 Dwarf_Debug dbg) 5369 { 5370 Dwarf_Frame_Op *oplist; 5371 Dwarf_Signed opcnt, delta; 5372 Dwarf_Small op; 5373 Dwarf_Error de; 5374 const char *op_str; 5375 char unk_op[32]; 5376 int i; 5377 5378 if (dwarf_expand_frame_instructions(cie, insts, len, &oplist, 5379 &opcnt, &de) != DW_DLV_OK) { 5380 warnx("dwarf_expand_frame_instructions failed: %s", 5381 dwarf_errmsg(de)); 5382 return; 5383 } 5384 5385 for (i = 0; i < opcnt; i++) { 5386 if (oplist[i].fp_base_op != 0) 5387 op = oplist[i].fp_base_op << 6; 5388 else 5389 op = oplist[i].fp_extended_op; 5390 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) { 5391 snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]", 5392 op); 5393 op_str = unk_op; 5394 } 5395 printf(" %s", op_str); 5396 switch (op) { 5397 case DW_CFA_advance_loc: 5398 delta = oplist[i].fp_offset * caf; 5399 pc += delta; 5400 printf(": %ju to %08jx", (uintmax_t) delta, 5401 (uintmax_t) pc); 5402 break; 5403 case DW_CFA_offset: 5404 case DW_CFA_offset_extended: 5405 case DW_CFA_offset_extended_sf: 5406 delta = oplist[i].fp_offset * daf; 5407 printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register, 5408 dwarf_regname(re, oplist[i].fp_register), 5409 (intmax_t) delta); 5410 break; 5411 case DW_CFA_restore: 5412 printf(": r%u (%s)", oplist[i].fp_register, 5413 dwarf_regname(re, oplist[i].fp_register)); 5414 break; 5415 case DW_CFA_set_loc: 5416 pc = oplist[i].fp_offset; 5417 printf(": to %08jx", (uintmax_t) pc); 5418 break; 5419 case DW_CFA_advance_loc1: 5420 case DW_CFA_advance_loc2: 5421 case DW_CFA_advance_loc4: 5422 pc += oplist[i].fp_offset; 5423 printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset, 5424 (uintmax_t) pc); 5425 break; 5426 case DW_CFA_def_cfa: 5427 printf(": r%u (%s) ofs %ju", oplist[i].fp_register, 5428 dwarf_regname(re, oplist[i].fp_register), 5429 (uintmax_t) oplist[i].fp_offset); 5430 break; 5431 case DW_CFA_def_cfa_sf: 5432 printf(": r%u (%s) ofs %jd", oplist[i].fp_register, 5433 dwarf_regname(re, oplist[i].fp_register), 5434 (intmax_t) (oplist[i].fp_offset * daf)); 5435 break; 5436 case DW_CFA_def_cfa_register: 5437 printf(": r%u (%s)", oplist[i].fp_register, 5438 dwarf_regname(re, oplist[i].fp_register)); 5439 break; 5440 case DW_CFA_def_cfa_offset: 5441 printf(": %ju", (uintmax_t) oplist[i].fp_offset); 5442 break; 5443 case DW_CFA_def_cfa_offset_sf: 5444 printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf)); 5445 break; 5446 default: 5447 break; 5448 } 5449 putchar('\n'); 5450 } 5451 5452 dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK); 5453 } 5454 5455 static char * 5456 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off) 5457 { 5458 static char rs[16]; 5459 5460 if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE) 5461 snprintf(rs, sizeof(rs), "%c", 'u'); 5462 else if (reg == DW_FRAME_CFA_COL) 5463 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off); 5464 else 5465 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg), 5466 (intmax_t) off); 5467 5468 return (rs); 5469 } 5470 5471 static int 5472 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc, 5473 Dwarf_Unsigned func_len, Dwarf_Half cie_ra) 5474 { 5475 Dwarf_Regtable rt; 5476 Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc; 5477 Dwarf_Error de; 5478 char *vec; 5479 int i; 5480 5481 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7)) 5482 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7))) 5483 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7))) 5484 #define RT(x) rt.rules[(x)] 5485 5486 vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1); 5487 if (vec == NULL) 5488 err(EXIT_FAILURE, "calloc failed"); 5489 5490 pre_pc = ~((Dwarf_Addr) 0); 5491 cur_pc = pc; 5492 end_pc = pc + func_len; 5493 for (; cur_pc < end_pc; cur_pc++) { 5494 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5495 &de) != DW_DLV_OK) { 5496 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5497 dwarf_errmsg(de)); 5498 return (-1); 5499 } 5500 if (row_pc == pre_pc) 5501 continue; 5502 pre_pc = row_pc; 5503 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5504 if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE) 5505 BIT_SET(vec, i); 5506 } 5507 } 5508 5509 printf(" LOC CFA "); 5510 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5511 if (BIT_ISSET(vec, i)) { 5512 if ((Dwarf_Half) i == cie_ra) 5513 printf("ra "); 5514 else 5515 printf("%-5s", 5516 dwarf_regname(re, (unsigned int) i)); 5517 } 5518 } 5519 putchar('\n'); 5520 5521 pre_pc = ~((Dwarf_Addr) 0); 5522 cur_pc = pc; 5523 end_pc = pc + func_len; 5524 for (; cur_pc < end_pc; cur_pc++) { 5525 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5526 &de) != DW_DLV_OK) { 5527 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5528 dwarf_errmsg(de)); 5529 return (-1); 5530 } 5531 if (row_pc == pre_pc) 5532 continue; 5533 pre_pc = row_pc; 5534 printf("%08jx ", (uintmax_t) row_pc); 5535 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum, 5536 RT(0).dw_offset)); 5537 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5538 if (BIT_ISSET(vec, i)) { 5539 printf("%-5s", get_regoff_str(re, 5540 RT(i).dw_regnum, RT(i).dw_offset)); 5541 } 5542 } 5543 putchar('\n'); 5544 } 5545 5546 free(vec); 5547 5548 return (0); 5549 5550 #undef BIT_SET 5551 #undef BIT_CLR 5552 #undef BIT_ISSET 5553 #undef RT 5554 } 5555 5556 static void 5557 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) 5558 { 5559 Dwarf_Cie *cie_list, cie, pre_cie; 5560 Dwarf_Fde *fde_list, fde; 5561 Dwarf_Off cie_offset, fde_offset; 5562 Dwarf_Unsigned cie_length, fde_instlen; 5563 Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length; 5564 Dwarf_Signed cie_count, fde_count, cie_index; 5565 Dwarf_Addr low_pc; 5566 Dwarf_Half cie_ra; 5567 Dwarf_Small cie_version; 5568 Dwarf_Ptr fde_addr, fde_inst, cie_inst; 5569 char *cie_aug, c; 5570 int i, eh_frame; 5571 Dwarf_Error de; 5572 5573 printf("\nThe section %s contains:\n\n", s->name); 5574 5575 if (!strcmp(s->name, ".debug_frame")) { 5576 eh_frame = 0; 5577 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count, 5578 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5579 warnx("dwarf_get_fde_list failed: %s", 5580 dwarf_errmsg(de)); 5581 return; 5582 } 5583 } else if (!strcmp(s->name, ".eh_frame")) { 5584 eh_frame = 1; 5585 if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, 5586 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5587 warnx("dwarf_get_fde_list_eh failed: %s", 5588 dwarf_errmsg(de)); 5589 return; 5590 } 5591 } else 5592 return; 5593 5594 pre_cie = NULL; 5595 for (i = 0; i < fde_count; i++) { 5596 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) { 5597 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5598 continue; 5599 } 5600 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) { 5601 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5602 continue; 5603 } 5604 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr, 5605 &fde_length, &cie_offset, &cie_index, &fde_offset, 5606 &de) != DW_DLV_OK) { 5607 warnx("dwarf_get_fde_range failed: %s", 5608 dwarf_errmsg(de)); 5609 continue; 5610 } 5611 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen, 5612 &de) != DW_DLV_OK) { 5613 warnx("dwarf_get_fde_instr_bytes failed: %s", 5614 dwarf_errmsg(de)); 5615 continue; 5616 } 5617 if (pre_cie == NULL || cie != pre_cie) { 5618 pre_cie = cie; 5619 if (dwarf_get_cie_info(cie, &cie_length, &cie_version, 5620 &cie_aug, &cie_caf, &cie_daf, &cie_ra, 5621 &cie_inst, &cie_instlen, &de) != DW_DLV_OK) { 5622 warnx("dwarf_get_cie_info failed: %s", 5623 dwarf_errmsg(de)); 5624 continue; 5625 } 5626 printf("%08jx %08jx %8.8jx CIE", 5627 (uintmax_t) cie_offset, 5628 (uintmax_t) cie_length, 5629 (uintmax_t) (eh_frame ? 0 : ~0U)); 5630 if (!alt) { 5631 putchar('\n'); 5632 printf(" Version:\t\t\t%u\n", cie_version); 5633 printf(" Augmentation:\t\t\t\""); 5634 while ((c = *cie_aug++) != '\0') 5635 putchar(c); 5636 printf("\"\n"); 5637 printf(" Code alignment factor:\t%ju\n", 5638 (uintmax_t) cie_caf); 5639 printf(" Data alignment factor:\t%jd\n", 5640 (intmax_t) cie_daf); 5641 printf(" Return address column:\t%ju\n", 5642 (uintmax_t) cie_ra); 5643 putchar('\n'); 5644 dump_dwarf_frame_inst(re, cie, cie_inst, 5645 cie_instlen, cie_caf, cie_daf, 0, 5646 re->dbg); 5647 putchar('\n'); 5648 } else { 5649 printf(" \""); 5650 while ((c = *cie_aug++) != '\0') 5651 putchar(c); 5652 putchar('"'); 5653 printf(" cf=%ju df=%jd ra=%ju\n", 5654 (uintmax_t) cie_caf, 5655 (uintmax_t) cie_daf, 5656 (uintmax_t) cie_ra); 5657 dump_dwarf_frame_regtable(re, fde, low_pc, 1, 5658 cie_ra); 5659 putchar('\n'); 5660 } 5661 } 5662 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n", 5663 (uintmax_t) fde_offset, (uintmax_t) fde_length, 5664 (uintmax_t) cie_offset, 5665 (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset : 5666 cie_offset), 5667 (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len)); 5668 if (!alt) 5669 dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen, 5670 cie_caf, cie_daf, low_pc, re->dbg); 5671 else 5672 dump_dwarf_frame_regtable(re, fde, low_pc, func_len, 5673 cie_ra); 5674 putchar('\n'); 5675 } 5676 } 5677 5678 static void 5679 dump_dwarf_frame(struct readelf *re, int alt) 5680 { 5681 struct section *s; 5682 int i; 5683 5684 (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL); 5685 5686 for (i = 0; (size_t) i < re->shnum; i++) { 5687 s = &re->sl[i]; 5688 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") || 5689 !strcmp(s->name, ".eh_frame"))) 5690 dump_dwarf_frame_section(re, s, alt); 5691 } 5692 } 5693 5694 static void 5695 dump_dwarf_str(struct readelf *re) 5696 { 5697 struct section *s; 5698 Elf_Data *d; 5699 unsigned char *p; 5700 int elferr, end, i, j; 5701 5702 printf("\nContents of section .debug_str:\n"); 5703 5704 s = NULL; 5705 for (i = 0; (size_t) i < re->shnum; i++) { 5706 s = &re->sl[i]; 5707 if (s->name != NULL && !strcmp(s->name, ".debug_str")) 5708 break; 5709 } 5710 if ((size_t) i >= re->shnum) 5711 return; 5712 5713 (void) elf_errno(); 5714 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5715 elferr = elf_errno(); 5716 if (elferr != 0) 5717 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5718 return; 5719 } 5720 if (d->d_size <= 0) 5721 return; 5722 5723 for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) { 5724 printf(" 0x%08x", (unsigned int) i); 5725 if ((size_t) i + 16 > d->d_size) 5726 end = d->d_size; 5727 else 5728 end = i + 16; 5729 for (j = i; j < i + 16; j++) { 5730 if ((j - i) % 4 == 0) 5731 putchar(' '); 5732 if (j >= end) { 5733 printf(" "); 5734 continue; 5735 } 5736 printf("%02x", (uint8_t) p[j]); 5737 } 5738 putchar(' '); 5739 for (j = i; j < end; j++) { 5740 if (isprint(p[j])) 5741 putchar(p[j]); 5742 else if (p[j] == 0) 5743 putchar('.'); 5744 else 5745 putchar(' '); 5746 } 5747 putchar('\n'); 5748 } 5749 } 5750 5751 struct loc_at { 5752 Dwarf_Attribute la_at; 5753 Dwarf_Unsigned la_off; 5754 Dwarf_Unsigned la_lowpc; 5755 Dwarf_Half la_cu_psize; 5756 Dwarf_Half la_cu_osize; 5757 Dwarf_Half la_cu_ver; 5758 TAILQ_ENTRY(loc_at) la_next; 5759 }; 5760 5761 static TAILQ_HEAD(, loc_at) lalist = TAILQ_HEAD_INITIALIZER(lalist); 5762 5763 static void 5764 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc) 5765 { 5766 Dwarf_Attribute *attr_list; 5767 Dwarf_Die ret_die; 5768 Dwarf_Unsigned off; 5769 Dwarf_Off ref; 5770 Dwarf_Signed attr_count; 5771 Dwarf_Half attr, form; 5772 Dwarf_Bool is_info; 5773 Dwarf_Error de; 5774 struct loc_at *la, *nla; 5775 int i, ret; 5776 5777 is_info = dwarf_get_die_infotypes_flag(die); 5778 5779 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5780 DW_DLV_OK) { 5781 if (ret == DW_DLV_ERROR) 5782 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5783 goto cont_search; 5784 } 5785 for (i = 0; i < attr_count; i++) { 5786 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5787 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5788 continue; 5789 } 5790 if (attr != DW_AT_location && 5791 attr != DW_AT_string_length && 5792 attr != DW_AT_return_addr && 5793 attr != DW_AT_data_member_location && 5794 attr != DW_AT_frame_base && 5795 attr != DW_AT_segment && 5796 attr != DW_AT_static_link && 5797 attr != DW_AT_use_location && 5798 attr != DW_AT_vtable_elem_location) 5799 continue; 5800 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 5801 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 5802 continue; 5803 } 5804 if (form == DW_FORM_data4 || form == DW_FORM_data8) { 5805 if (dwarf_formudata(attr_list[i], &off, &de) != 5806 DW_DLV_OK) { 5807 warnx("dwarf_formudata failed: %s", 5808 dwarf_errmsg(de)); 5809 continue; 5810 } 5811 } else if (form == DW_FORM_sec_offset) { 5812 if (dwarf_global_formref(attr_list[i], &ref, &de) != 5813 DW_DLV_OK) { 5814 warnx("dwarf_global_formref failed: %s", 5815 dwarf_errmsg(de)); 5816 continue; 5817 } 5818 off = ref; 5819 } else 5820 continue; 5821 5822 TAILQ_FOREACH(la, &lalist, la_next) { 5823 if (off == la->la_off) 5824 break; 5825 if (off < la->la_off) { 5826 if ((nla = malloc(sizeof(*nla))) == NULL) 5827 err(EXIT_FAILURE, "malloc failed"); 5828 nla->la_at = attr_list[i]; 5829 nla->la_off = off; 5830 nla->la_lowpc = lowpc; 5831 nla->la_cu_psize = re->cu_psize; 5832 nla->la_cu_osize = re->cu_osize; 5833 nla->la_cu_ver = re->cu_ver; 5834 TAILQ_INSERT_BEFORE(la, nla, la_next); 5835 break; 5836 } 5837 } 5838 if (la == NULL) { 5839 if ((nla = malloc(sizeof(*nla))) == NULL) 5840 err(EXIT_FAILURE, "malloc failed"); 5841 nla->la_at = attr_list[i]; 5842 nla->la_off = off; 5843 nla->la_lowpc = lowpc; 5844 nla->la_cu_psize = re->cu_psize; 5845 nla->la_cu_osize = re->cu_osize; 5846 nla->la_cu_ver = re->cu_ver; 5847 TAILQ_INSERT_TAIL(&lalist, nla, la_next); 5848 } 5849 } 5850 5851 cont_search: 5852 /* Search children. */ 5853 ret = dwarf_child(die, &ret_die, &de); 5854 if (ret == DW_DLV_ERROR) 5855 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5856 else if (ret == DW_DLV_OK) 5857 search_loclist_at(re, ret_die, lowpc); 5858 5859 /* Search sibling. */ 5860 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 5861 if (ret == DW_DLV_ERROR) 5862 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5863 else if (ret == DW_DLV_OK) 5864 search_loclist_at(re, ret_die, lowpc); 5865 } 5866 5867 static void 5868 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr) 5869 { 5870 const char *op_str; 5871 char unk_op[32]; 5872 uint8_t *b, n; 5873 int i; 5874 5875 if (dwarf_get_OP_name(lr->lr_atom, &op_str) != 5876 DW_DLV_OK) { 5877 snprintf(unk_op, sizeof(unk_op), 5878 "[Unknown OP: %#x]", lr->lr_atom); 5879 op_str = unk_op; 5880 } 5881 5882 printf("%s", op_str); 5883 5884 switch (lr->lr_atom) { 5885 case DW_OP_reg0: 5886 case DW_OP_reg1: 5887 case DW_OP_reg2: 5888 case DW_OP_reg3: 5889 case DW_OP_reg4: 5890 case DW_OP_reg5: 5891 case DW_OP_reg6: 5892 case DW_OP_reg7: 5893 case DW_OP_reg8: 5894 case DW_OP_reg9: 5895 case DW_OP_reg10: 5896 case DW_OP_reg11: 5897 case DW_OP_reg12: 5898 case DW_OP_reg13: 5899 case DW_OP_reg14: 5900 case DW_OP_reg15: 5901 case DW_OP_reg16: 5902 case DW_OP_reg17: 5903 case DW_OP_reg18: 5904 case DW_OP_reg19: 5905 case DW_OP_reg20: 5906 case DW_OP_reg21: 5907 case DW_OP_reg22: 5908 case DW_OP_reg23: 5909 case DW_OP_reg24: 5910 case DW_OP_reg25: 5911 case DW_OP_reg26: 5912 case DW_OP_reg27: 5913 case DW_OP_reg28: 5914 case DW_OP_reg29: 5915 case DW_OP_reg30: 5916 case DW_OP_reg31: 5917 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0)); 5918 break; 5919 5920 case DW_OP_deref: 5921 case DW_OP_lit0: 5922 case DW_OP_lit1: 5923 case DW_OP_lit2: 5924 case DW_OP_lit3: 5925 case DW_OP_lit4: 5926 case DW_OP_lit5: 5927 case DW_OP_lit6: 5928 case DW_OP_lit7: 5929 case DW_OP_lit8: 5930 case DW_OP_lit9: 5931 case DW_OP_lit10: 5932 case DW_OP_lit11: 5933 case DW_OP_lit12: 5934 case DW_OP_lit13: 5935 case DW_OP_lit14: 5936 case DW_OP_lit15: 5937 case DW_OP_lit16: 5938 case DW_OP_lit17: 5939 case DW_OP_lit18: 5940 case DW_OP_lit19: 5941 case DW_OP_lit20: 5942 case DW_OP_lit21: 5943 case DW_OP_lit22: 5944 case DW_OP_lit23: 5945 case DW_OP_lit24: 5946 case DW_OP_lit25: 5947 case DW_OP_lit26: 5948 case DW_OP_lit27: 5949 case DW_OP_lit28: 5950 case DW_OP_lit29: 5951 case DW_OP_lit30: 5952 case DW_OP_lit31: 5953 case DW_OP_dup: 5954 case DW_OP_drop: 5955 case DW_OP_over: 5956 case DW_OP_swap: 5957 case DW_OP_rot: 5958 case DW_OP_xderef: 5959 case DW_OP_abs: 5960 case DW_OP_and: 5961 case DW_OP_div: 5962 case DW_OP_minus: 5963 case DW_OP_mod: 5964 case DW_OP_mul: 5965 case DW_OP_neg: 5966 case DW_OP_not: 5967 case DW_OP_or: 5968 case DW_OP_plus: 5969 case DW_OP_shl: 5970 case DW_OP_shr: 5971 case DW_OP_shra: 5972 case DW_OP_xor: 5973 case DW_OP_eq: 5974 case DW_OP_ge: 5975 case DW_OP_gt: 5976 case DW_OP_le: 5977 case DW_OP_lt: 5978 case DW_OP_ne: 5979 case DW_OP_nop: 5980 case DW_OP_push_object_address: 5981 case DW_OP_form_tls_address: 5982 case DW_OP_call_frame_cfa: 5983 case DW_OP_stack_value: 5984 case DW_OP_GNU_push_tls_address: 5985 case DW_OP_GNU_uninit: 5986 break; 5987 5988 case DW_OP_const1u: 5989 case DW_OP_pick: 5990 case DW_OP_deref_size: 5991 case DW_OP_xderef_size: 5992 case DW_OP_const2u: 5993 case DW_OP_bra: 5994 case DW_OP_skip: 5995 case DW_OP_const4u: 5996 case DW_OP_const8u: 5997 case DW_OP_constu: 5998 case DW_OP_plus_uconst: 5999 case DW_OP_regx: 6000 case DW_OP_piece: 6001 printf(": %ju", (uintmax_t) 6002 lr->lr_number); 6003 break; 6004 6005 case DW_OP_const1s: 6006 case DW_OP_const2s: 6007 case DW_OP_const4s: 6008 case DW_OP_const8s: 6009 case DW_OP_consts: 6010 printf(": %jd", (intmax_t) 6011 lr->lr_number); 6012 break; 6013 6014 case DW_OP_breg0: 6015 case DW_OP_breg1: 6016 case DW_OP_breg2: 6017 case DW_OP_breg3: 6018 case DW_OP_breg4: 6019 case DW_OP_breg5: 6020 case DW_OP_breg6: 6021 case DW_OP_breg7: 6022 case DW_OP_breg8: 6023 case DW_OP_breg9: 6024 case DW_OP_breg10: 6025 case DW_OP_breg11: 6026 case DW_OP_breg12: 6027 case DW_OP_breg13: 6028 case DW_OP_breg14: 6029 case DW_OP_breg15: 6030 case DW_OP_breg16: 6031 case DW_OP_breg17: 6032 case DW_OP_breg18: 6033 case DW_OP_breg19: 6034 case DW_OP_breg20: 6035 case DW_OP_breg21: 6036 case DW_OP_breg22: 6037 case DW_OP_breg23: 6038 case DW_OP_breg24: 6039 case DW_OP_breg25: 6040 case DW_OP_breg26: 6041 case DW_OP_breg27: 6042 case DW_OP_breg28: 6043 case DW_OP_breg29: 6044 case DW_OP_breg30: 6045 case DW_OP_breg31: 6046 printf(" (%s): %jd", 6047 dwarf_regname(re, lr->lr_atom - DW_OP_breg0), 6048 (intmax_t) lr->lr_number); 6049 break; 6050 6051 case DW_OP_fbreg: 6052 printf(": %jd", (intmax_t) 6053 lr->lr_number); 6054 break; 6055 6056 case DW_OP_bregx: 6057 printf(": %ju (%s) %jd", 6058 (uintmax_t) lr->lr_number, 6059 dwarf_regname(re, (unsigned int) lr->lr_number), 6060 (intmax_t) lr->lr_number2); 6061 break; 6062 6063 case DW_OP_addr: 6064 case DW_OP_GNU_encoded_addr: 6065 printf(": %#jx", (uintmax_t) 6066 lr->lr_number); 6067 break; 6068 6069 case DW_OP_GNU_implicit_pointer: 6070 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number, 6071 (intmax_t) lr->lr_number2); 6072 break; 6073 6074 case DW_OP_implicit_value: 6075 printf(": %ju byte block:", (uintmax_t) lr->lr_number); 6076 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6077 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++) 6078 printf(" %x", b[i]); 6079 break; 6080 6081 case DW_OP_GNU_entry_value: 6082 printf(": ("); 6083 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2, 6084 lr->lr_number); 6085 putchar(')'); 6086 break; 6087 6088 case DW_OP_GNU_const_type: 6089 printf(": <0x%jx> ", (uintmax_t) lr->lr_number); 6090 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6091 n = *b; 6092 for (i = 1; (uint8_t) i < n; i++) 6093 printf(" %x", b[i]); 6094 break; 6095 6096 case DW_OP_GNU_regval_type: 6097 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number, 6098 dwarf_regname(re, (unsigned int) lr->lr_number), 6099 (uintmax_t) lr->lr_number2); 6100 break; 6101 6102 case DW_OP_GNU_convert: 6103 case DW_OP_GNU_deref_type: 6104 case DW_OP_GNU_parameter_ref: 6105 case DW_OP_GNU_reinterpret: 6106 printf(": <0x%jx>", (uintmax_t) lr->lr_number); 6107 break; 6108 6109 default: 6110 break; 6111 } 6112 } 6113 6114 static void 6115 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len) 6116 { 6117 Dwarf_Locdesc *llbuf; 6118 Dwarf_Signed lcnt; 6119 Dwarf_Error de; 6120 int i; 6121 6122 if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize, 6123 re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) { 6124 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de)); 6125 return; 6126 } 6127 6128 for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) { 6129 dump_dwarf_loc(re, &llbuf->ld_s[i]); 6130 if (i < llbuf->ld_cents - 1) 6131 printf("; "); 6132 } 6133 6134 dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK); 6135 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC); 6136 } 6137 6138 static void 6139 dump_dwarf_loclist(struct readelf *re) 6140 { 6141 Dwarf_Die die; 6142 Dwarf_Locdesc **llbuf; 6143 Dwarf_Unsigned lowpc; 6144 Dwarf_Signed lcnt; 6145 Dwarf_Half tag, version, pointer_size, off_size; 6146 Dwarf_Error de; 6147 struct loc_at *la; 6148 int i, j, ret; 6149 6150 printf("\nContents of section .debug_loc:\n"); 6151 6152 /* Search .debug_info section. */ 6153 while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL, 6154 &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) { 6155 set_cu_context(re, pointer_size, off_size, version); 6156 die = NULL; 6157 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 6158 continue; 6159 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6160 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 6161 continue; 6162 } 6163 /* XXX: What about DW_TAG_partial_unit? */ 6164 lowpc = 0; 6165 if (tag == DW_TAG_compile_unit) { 6166 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6167 &lowpc, &de) != DW_DLV_OK) 6168 lowpc = 0; 6169 } 6170 6171 /* Search attributes for reference to .debug_loc section. */ 6172 search_loclist_at(re, die, lowpc); 6173 } 6174 if (ret == DW_DLV_ERROR) 6175 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6176 6177 /* Search .debug_types section. */ 6178 do { 6179 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL, 6180 &version, NULL, &pointer_size, &off_size, NULL, NULL, 6181 NULL, NULL, &de)) == DW_DLV_OK) { 6182 set_cu_context(re, pointer_size, off_size, version); 6183 die = NULL; 6184 if (dwarf_siblingof(re->dbg, die, &die, &de) != 6185 DW_DLV_OK) 6186 continue; 6187 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6188 warnx("dwarf_tag failed: %s", 6189 dwarf_errmsg(de)); 6190 continue; 6191 } 6192 6193 lowpc = 0; 6194 if (tag == DW_TAG_type_unit) { 6195 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6196 &lowpc, &de) != DW_DLV_OK) 6197 lowpc = 0; 6198 } 6199 6200 /* 6201 * Search attributes for reference to .debug_loc 6202 * section. 6203 */ 6204 search_loclist_at(re, die, lowpc); 6205 } 6206 if (ret == DW_DLV_ERROR) 6207 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6208 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 6209 6210 if (TAILQ_EMPTY(&lalist)) 6211 return; 6212 6213 printf(" Offset Begin End Expression\n"); 6214 6215 TAILQ_FOREACH(la, &lalist, la_next) { 6216 if (dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de) != 6217 DW_DLV_OK) { 6218 warnx("dwarf_loclist_n failed: %s", dwarf_errmsg(de)); 6219 continue; 6220 } 6221 set_cu_context(re, la->la_cu_psize, la->la_cu_osize, 6222 la->la_cu_ver); 6223 for (i = 0; i < lcnt; i++) { 6224 printf(" %8.8jx ", (uintmax_t) la->la_off); 6225 if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) { 6226 printf("<End of list>\n"); 6227 continue; 6228 } 6229 6230 /* TODO: handle base selection entry. */ 6231 6232 printf("%8.8jx %8.8jx ", 6233 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc), 6234 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc)); 6235 6236 putchar('('); 6237 for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) { 6238 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]); 6239 if (j < llbuf[i]->ld_cents - 1) 6240 printf("; "); 6241 } 6242 putchar(')'); 6243 6244 if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc) 6245 printf(" (start == end)"); 6246 putchar('\n'); 6247 } 6248 for (i = 0; i < lcnt; i++) { 6249 dwarf_dealloc(re->dbg, llbuf[i]->ld_s, 6250 DW_DLA_LOC_BLOCK); 6251 dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC); 6252 } 6253 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST); 6254 } 6255 } 6256 6257 /* 6258 * Retrieve a string using string table section index and the string offset. 6259 */ 6260 static const char* 6261 get_string(struct readelf *re, int strtab, size_t off) 6262 { 6263 const char *name; 6264 6265 if ((name = elf_strptr(re->elf, strtab, off)) == NULL) 6266 return (""); 6267 6268 return (name); 6269 } 6270 6271 /* 6272 * Retrieve the name of a symbol using the section index of the symbol 6273 * table and the index of the symbol within that table. 6274 */ 6275 static const char * 6276 get_symbol_name(struct readelf *re, int symtab, int i) 6277 { 6278 struct section *s; 6279 const char *name; 6280 GElf_Sym sym; 6281 Elf_Data *data; 6282 int elferr; 6283 6284 s = &re->sl[symtab]; 6285 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6286 return (""); 6287 (void) elf_errno(); 6288 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6289 elferr = elf_errno(); 6290 if (elferr != 0) 6291 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6292 return (""); 6293 } 6294 if (gelf_getsym(data, i, &sym) != &sym) 6295 return (""); 6296 /* Return section name for STT_SECTION symbol. */ 6297 if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) { 6298 if (sym.st_shndx < re->shnum && 6299 re->sl[sym.st_shndx].name != NULL) 6300 return (re->sl[sym.st_shndx].name); 6301 return (""); 6302 } 6303 if (s->link >= re->shnum || 6304 (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL) 6305 return (""); 6306 6307 return (name); 6308 } 6309 6310 static uint64_t 6311 get_symbol_value(struct readelf *re, int symtab, int i) 6312 { 6313 struct section *s; 6314 GElf_Sym sym; 6315 Elf_Data *data; 6316 int elferr; 6317 6318 s = &re->sl[symtab]; 6319 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6320 return (0); 6321 (void) elf_errno(); 6322 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6323 elferr = elf_errno(); 6324 if (elferr != 0) 6325 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6326 return (0); 6327 } 6328 if (gelf_getsym(data, i, &sym) != &sym) 6329 return (0); 6330 6331 return (sym.st_value); 6332 } 6333 6334 static void 6335 hex_dump(struct readelf *re) 6336 { 6337 struct section *s; 6338 Elf_Data *d; 6339 uint8_t *buf; 6340 size_t sz, nbytes; 6341 uint64_t addr; 6342 int elferr, i, j; 6343 6344 for (i = 1; (size_t) i < re->shnum; i++) { 6345 s = &re->sl[i]; 6346 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL) 6347 continue; 6348 (void) elf_errno(); 6349 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6350 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6351 elferr = elf_errno(); 6352 if (elferr != 0) 6353 warnx("elf_getdata failed: %s", 6354 elf_errmsg(elferr)); 6355 continue; 6356 } 6357 (void) elf_errno(); 6358 if (d->d_size <= 0 || d->d_buf == NULL) { 6359 printf("\nSection '%s' has no data to dump.\n", 6360 s->name); 6361 continue; 6362 } 6363 buf = d->d_buf; 6364 sz = d->d_size; 6365 addr = s->addr; 6366 printf("\nHex dump of section '%s':\n", s->name); 6367 while (sz > 0) { 6368 printf(" 0x%8.8jx ", (uintmax_t)addr); 6369 nbytes = sz > 16? 16 : sz; 6370 for (j = 0; j < 16; j++) { 6371 if ((size_t)j < nbytes) 6372 printf("%2.2x", buf[j]); 6373 else 6374 printf(" "); 6375 if ((j & 3) == 3) 6376 printf(" "); 6377 } 6378 for (j = 0; (size_t)j < nbytes; j++) { 6379 if (isprint(buf[j])) 6380 printf("%c", buf[j]); 6381 else 6382 printf("."); 6383 } 6384 printf("\n"); 6385 buf += nbytes; 6386 addr += nbytes; 6387 sz -= nbytes; 6388 } 6389 } 6390 } 6391 6392 static void 6393 str_dump(struct readelf *re) 6394 { 6395 struct section *s; 6396 Elf_Data *d; 6397 unsigned char *start, *end, *buf_end; 6398 unsigned int len; 6399 int i, j, elferr, found; 6400 6401 for (i = 1; (size_t) i < re->shnum; i++) { 6402 s = &re->sl[i]; 6403 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL) 6404 continue; 6405 (void) elf_errno(); 6406 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6407 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6408 elferr = elf_errno(); 6409 if (elferr != 0) 6410 warnx("elf_getdata failed: %s", 6411 elf_errmsg(elferr)); 6412 continue; 6413 } 6414 (void) elf_errno(); 6415 if (d->d_size <= 0 || d->d_buf == NULL) { 6416 printf("\nSection '%s' has no data to dump.\n", 6417 s->name); 6418 continue; 6419 } 6420 buf_end = (unsigned char *) d->d_buf + d->d_size; 6421 start = (unsigned char *) d->d_buf; 6422 found = 0; 6423 printf("\nString dump of section '%s':\n", s->name); 6424 for (;;) { 6425 while (start < buf_end && !isprint(*start)) 6426 start++; 6427 if (start >= buf_end) 6428 break; 6429 end = start + 1; 6430 while (end < buf_end && isprint(*end)) 6431 end++; 6432 printf(" [%6lx] ", 6433 (long) (start - (unsigned char *) d->d_buf)); 6434 len = end - start; 6435 for (j = 0; (unsigned int) j < len; j++) 6436 putchar(start[j]); 6437 putchar('\n'); 6438 found = 1; 6439 if (end >= buf_end) 6440 break; 6441 start = end + 1; 6442 } 6443 if (!found) 6444 printf(" No strings found in this section."); 6445 putchar('\n'); 6446 } 6447 } 6448 6449 static void 6450 load_sections(struct readelf *re) 6451 { 6452 struct section *s; 6453 const char *name; 6454 Elf_Scn *scn; 6455 GElf_Shdr sh; 6456 size_t shstrndx, ndx; 6457 int elferr; 6458 6459 /* Allocate storage for internal section list. */ 6460 if (!elf_getshnum(re->elf, &re->shnum)) { 6461 warnx("elf_getshnum failed: %s", elf_errmsg(-1)); 6462 return; 6463 } 6464 if (re->sl != NULL) 6465 free(re->sl); 6466 if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL) 6467 err(EXIT_FAILURE, "calloc failed"); 6468 6469 /* Get the index of .shstrtab section. */ 6470 if (!elf_getshstrndx(re->elf, &shstrndx)) { 6471 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1)); 6472 return; 6473 } 6474 6475 if ((scn = elf_getscn(re->elf, 0)) == NULL) 6476 return; 6477 6478 (void) elf_errno(); 6479 do { 6480 if (gelf_getshdr(scn, &sh) == NULL) { 6481 warnx("gelf_getshdr failed: %s", elf_errmsg(-1)); 6482 (void) elf_errno(); 6483 continue; 6484 } 6485 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) { 6486 (void) elf_errno(); 6487 name = "ERROR"; 6488 } 6489 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) { 6490 if ((elferr = elf_errno()) != 0) 6491 warnx("elf_ndxscn failed: %s", 6492 elf_errmsg(elferr)); 6493 continue; 6494 } 6495 if (ndx >= re->shnum) { 6496 warnx("section index of '%s' out of range", name); 6497 continue; 6498 } 6499 if (sh.sh_link >= re->shnum) 6500 warnx("section link %llu of '%s' out of range", 6501 (unsigned long long)sh.sh_link, name); 6502 s = &re->sl[ndx]; 6503 s->name = name; 6504 s->scn = scn; 6505 s->off = sh.sh_offset; 6506 s->sz = sh.sh_size; 6507 s->entsize = sh.sh_entsize; 6508 s->align = sh.sh_addralign; 6509 s->type = sh.sh_type; 6510 s->flags = sh.sh_flags; 6511 s->addr = sh.sh_addr; 6512 s->link = sh.sh_link; 6513 s->info = sh.sh_info; 6514 } while ((scn = elf_nextscn(re->elf, scn)) != NULL); 6515 elferr = elf_errno(); 6516 if (elferr != 0) 6517 warnx("elf_nextscn failed: %s", elf_errmsg(elferr)); 6518 } 6519 6520 static void 6521 unload_sections(struct readelf *re) 6522 { 6523 6524 if (re->sl != NULL) { 6525 free(re->sl); 6526 re->sl = NULL; 6527 } 6528 re->shnum = 0; 6529 re->vd_s = NULL; 6530 re->vn_s = NULL; 6531 re->vs_s = NULL; 6532 re->vs = NULL; 6533 re->vs_sz = 0; 6534 if (re->ver != NULL) { 6535 free(re->ver); 6536 re->ver = NULL; 6537 re->ver_sz = 0; 6538 } 6539 } 6540 6541 static void 6542 dump_elf(struct readelf *re) 6543 { 6544 6545 /* Fetch ELF header. No need to continue if it fails. */ 6546 if (gelf_getehdr(re->elf, &re->ehdr) == NULL) { 6547 warnx("gelf_getehdr failed: %s", elf_errmsg(-1)); 6548 return; 6549 } 6550 if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) { 6551 warnx("gelf_getclass failed: %s", elf_errmsg(-1)); 6552 return; 6553 } 6554 if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) { 6555 re->dw_read = _read_msb; 6556 re->dw_decode = _decode_msb; 6557 } else { 6558 re->dw_read = _read_lsb; 6559 re->dw_decode = _decode_lsb; 6560 } 6561 6562 if (re->options & ~RE_H) 6563 load_sections(re); 6564 if ((re->options & RE_VV) || (re->options & RE_S)) 6565 search_ver(re); 6566 if (re->options & RE_H) 6567 dump_ehdr(re); 6568 if (re->options & RE_L) 6569 dump_phdr(re); 6570 if (re->options & RE_SS) 6571 dump_shdr(re); 6572 if (re->options & RE_G) 6573 dump_section_groups(re); 6574 if (re->options & RE_D) 6575 dump_dynamic(re); 6576 if (re->options & RE_R) 6577 dump_reloc(re); 6578 if (re->options & RE_S) 6579 dump_symtabs(re); 6580 if (re->options & RE_N) 6581 dump_notes(re); 6582 if (re->options & RE_II) 6583 dump_hash(re); 6584 if (re->options & RE_X) 6585 hex_dump(re); 6586 if (re->options & RE_P) 6587 str_dump(re); 6588 if (re->options & RE_VV) 6589 dump_ver(re); 6590 if (re->options & RE_AA) 6591 dump_arch_specific_info(re); 6592 if (re->options & RE_W) 6593 dump_dwarf(re); 6594 if (re->options & ~RE_H) 6595 unload_sections(re); 6596 } 6597 6598 static void 6599 dump_dwarf(struct readelf *re) 6600 { 6601 int error; 6602 Dwarf_Error de; 6603 6604 if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) { 6605 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL) 6606 errx(EXIT_FAILURE, "dwarf_elf_init failed: %s", 6607 dwarf_errmsg(de)); 6608 return; 6609 } 6610 6611 if (re->dop & DW_A) 6612 dump_dwarf_abbrev(re); 6613 if (re->dop & DW_L) 6614 dump_dwarf_line(re); 6615 if (re->dop & DW_LL) 6616 dump_dwarf_line_decoded(re); 6617 if (re->dop & DW_I) { 6618 dump_dwarf_info(re, 0); 6619 dump_dwarf_info(re, 1); 6620 } 6621 if (re->dop & DW_P) 6622 dump_dwarf_pubnames(re); 6623 if (re->dop & DW_R) 6624 dump_dwarf_aranges(re); 6625 if (re->dop & DW_RR) 6626 dump_dwarf_ranges(re); 6627 if (re->dop & DW_M) 6628 dump_dwarf_macinfo(re); 6629 if (re->dop & DW_F) 6630 dump_dwarf_frame(re, 0); 6631 else if (re->dop & DW_FF) 6632 dump_dwarf_frame(re, 1); 6633 if (re->dop & DW_S) 6634 dump_dwarf_str(re); 6635 if (re->dop & DW_O) 6636 dump_dwarf_loclist(re); 6637 6638 dwarf_finish(re->dbg, &de); 6639 } 6640 6641 static void 6642 dump_ar(struct readelf *re, int fd) 6643 { 6644 Elf_Arsym *arsym; 6645 Elf_Arhdr *arhdr; 6646 Elf_Cmd cmd; 6647 Elf *e; 6648 size_t sz; 6649 off_t off; 6650 int i; 6651 6652 re->ar = re->elf; 6653 6654 if (re->options & RE_C) { 6655 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) { 6656 warnx("elf_getarsym() failed: %s", elf_errmsg(-1)); 6657 goto process_members; 6658 } 6659 printf("Index of archive %s: (%ju entries)\n", re->filename, 6660 (uintmax_t) sz - 1); 6661 off = 0; 6662 for (i = 0; (size_t) i < sz; i++) { 6663 if (arsym[i].as_name == NULL) 6664 break; 6665 if (arsym[i].as_off != off) { 6666 off = arsym[i].as_off; 6667 if (elf_rand(re->ar, off) != off) { 6668 warnx("elf_rand() failed: %s", 6669 elf_errmsg(-1)); 6670 continue; 6671 } 6672 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) == 6673 NULL) { 6674 warnx("elf_begin() failed: %s", 6675 elf_errmsg(-1)); 6676 continue; 6677 } 6678 if ((arhdr = elf_getarhdr(e)) == NULL) { 6679 warnx("elf_getarhdr() failed: %s", 6680 elf_errmsg(-1)); 6681 elf_end(e); 6682 continue; 6683 } 6684 printf("Binary %s(%s) contains:\n", 6685 re->filename, arhdr->ar_name); 6686 } 6687 printf("\t%s\n", arsym[i].as_name); 6688 } 6689 if (elf_rand(re->ar, SARMAG) != SARMAG) { 6690 warnx("elf_rand() failed: %s", elf_errmsg(-1)); 6691 return; 6692 } 6693 } 6694 6695 process_members: 6696 6697 if ((re->options & ~RE_C) == 0) 6698 return; 6699 6700 cmd = ELF_C_READ; 6701 while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) { 6702 if ((arhdr = elf_getarhdr(re->elf)) == NULL) { 6703 warnx("elf_getarhdr() failed: %s", elf_errmsg(-1)); 6704 goto next_member; 6705 } 6706 if (strcmp(arhdr->ar_name, "/") == 0 || 6707 strcmp(arhdr->ar_name, "//") == 0 || 6708 strcmp(arhdr->ar_name, "__.SYMDEF") == 0) 6709 goto next_member; 6710 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name); 6711 dump_elf(re); 6712 6713 next_member: 6714 cmd = elf_next(re->elf); 6715 elf_end(re->elf); 6716 } 6717 re->elf = re->ar; 6718 } 6719 6720 static void 6721 dump_object(struct readelf *re) 6722 { 6723 int fd; 6724 6725 if ((fd = open(re->filename, O_RDONLY)) == -1) { 6726 warn("open %s failed", re->filename); 6727 return; 6728 } 6729 6730 if ((re->flags & DISPLAY_FILENAME) != 0) 6731 printf("\nFile: %s\n", re->filename); 6732 6733 if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { 6734 warnx("elf_begin() failed: %s", elf_errmsg(-1)); 6735 return; 6736 } 6737 6738 switch (elf_kind(re->elf)) { 6739 case ELF_K_NONE: 6740 warnx("Not an ELF file."); 6741 return; 6742 case ELF_K_ELF: 6743 dump_elf(re); 6744 break; 6745 case ELF_K_AR: 6746 dump_ar(re, fd); 6747 break; 6748 default: 6749 warnx("Internal: libelf returned unknown elf kind."); 6750 return; 6751 } 6752 6753 elf_end(re->elf); 6754 } 6755 6756 static void 6757 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 6758 { 6759 struct dumpop *d; 6760 6761 if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) { 6762 if ((d = calloc(1, sizeof(*d))) == NULL) 6763 err(EXIT_FAILURE, "calloc failed"); 6764 if (t == DUMP_BY_INDEX) 6765 d->u.si = si; 6766 else 6767 d->u.sn = sn; 6768 d->type = t; 6769 d->op = op; 6770 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list); 6771 } else 6772 d->op |= op; 6773 } 6774 6775 static struct dumpop * 6776 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 6777 { 6778 struct dumpop *d; 6779 6780 STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) { 6781 if ((op == -1 || op & d->op) && 6782 (t == -1 || (unsigned) t == d->type)) { 6783 if ((d->type == DUMP_BY_INDEX && d->u.si == si) || 6784 (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn))) 6785 return (d); 6786 } 6787 } 6788 6789 return (NULL); 6790 } 6791 6792 static struct { 6793 const char *ln; 6794 char sn; 6795 int value; 6796 } dwarf_op[] = { 6797 {"rawline", 'l', DW_L}, 6798 {"decodedline", 'L', DW_LL}, 6799 {"info", 'i', DW_I}, 6800 {"abbrev", 'a', DW_A}, 6801 {"pubnames", 'p', DW_P}, 6802 {"aranges", 'r', DW_R}, 6803 {"ranges", 'r', DW_R}, 6804 {"Ranges", 'R', DW_RR}, 6805 {"macro", 'm', DW_M}, 6806 {"frames", 'f', DW_F}, 6807 {"frames-interp", 'F', DW_FF}, 6808 {"str", 's', DW_S}, 6809 {"loc", 'o', DW_O}, 6810 {NULL, 0, 0} 6811 }; 6812 6813 static void 6814 parse_dwarf_op_short(struct readelf *re, const char *op) 6815 { 6816 int i; 6817 6818 if (op == NULL) { 6819 re->dop |= DW_DEFAULT_OPTIONS; 6820 return; 6821 } 6822 6823 for (; *op != '\0'; op++) { 6824 for (i = 0; dwarf_op[i].ln != NULL; i++) { 6825 if (dwarf_op[i].sn == *op) { 6826 re->dop |= dwarf_op[i].value; 6827 break; 6828 } 6829 } 6830 } 6831 } 6832 6833 static void 6834 parse_dwarf_op_long(struct readelf *re, const char *op) 6835 { 6836 char *p, *token, *bp; 6837 int i; 6838 6839 if (op == NULL) { 6840 re->dop |= DW_DEFAULT_OPTIONS; 6841 return; 6842 } 6843 6844 if ((p = strdup(op)) == NULL) 6845 err(EXIT_FAILURE, "strdup failed"); 6846 bp = p; 6847 6848 while ((token = strsep(&p, ",")) != NULL) { 6849 for (i = 0; dwarf_op[i].ln != NULL; i++) { 6850 if (!strcmp(token, dwarf_op[i].ln)) { 6851 re->dop |= dwarf_op[i].value; 6852 break; 6853 } 6854 } 6855 } 6856 6857 free(bp); 6858 } 6859 6860 static uint64_t 6861 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 6862 { 6863 uint64_t ret; 6864 uint8_t *src; 6865 6866 src = (uint8_t *) d->d_buf + *offsetp; 6867 6868 ret = 0; 6869 switch (bytes_to_read) { 6870 case 8: 6871 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 6872 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 6873 /* FALLTHROUGH */ 6874 case 4: 6875 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 6876 /* FALLTHROUGH */ 6877 case 2: 6878 ret |= ((uint64_t) src[1]) << 8; 6879 /* FALLTHROUGH */ 6880 case 1: 6881 ret |= src[0]; 6882 break; 6883 default: 6884 return (0); 6885 } 6886 6887 *offsetp += bytes_to_read; 6888 6889 return (ret); 6890 } 6891 6892 static uint64_t 6893 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 6894 { 6895 uint64_t ret; 6896 uint8_t *src; 6897 6898 src = (uint8_t *) d->d_buf + *offsetp; 6899 6900 switch (bytes_to_read) { 6901 case 1: 6902 ret = src[0]; 6903 break; 6904 case 2: 6905 ret = src[1] | ((uint64_t) src[0]) << 8; 6906 break; 6907 case 4: 6908 ret = src[3] | ((uint64_t) src[2]) << 8; 6909 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 6910 break; 6911 case 8: 6912 ret = src[7] | ((uint64_t) src[6]) << 8; 6913 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 6914 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 6915 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 6916 break; 6917 default: 6918 return (0); 6919 } 6920 6921 *offsetp += bytes_to_read; 6922 6923 return (ret); 6924 } 6925 6926 static uint64_t 6927 _decode_lsb(uint8_t **data, int bytes_to_read) 6928 { 6929 uint64_t ret; 6930 uint8_t *src; 6931 6932 src = *data; 6933 6934 ret = 0; 6935 switch (bytes_to_read) { 6936 case 8: 6937 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 6938 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 6939 /* FALLTHROUGH */ 6940 case 4: 6941 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 6942 /* FALLTHROUGH */ 6943 case 2: 6944 ret |= ((uint64_t) src[1]) << 8; 6945 /* FALLTHROUGH */ 6946 case 1: 6947 ret |= src[0]; 6948 break; 6949 default: 6950 return (0); 6951 } 6952 6953 *data += bytes_to_read; 6954 6955 return (ret); 6956 } 6957 6958 static uint64_t 6959 _decode_msb(uint8_t **data, int bytes_to_read) 6960 { 6961 uint64_t ret; 6962 uint8_t *src; 6963 6964 src = *data; 6965 6966 ret = 0; 6967 switch (bytes_to_read) { 6968 case 1: 6969 ret = src[0]; 6970 break; 6971 case 2: 6972 ret = src[1] | ((uint64_t) src[0]) << 8; 6973 break; 6974 case 4: 6975 ret = src[3] | ((uint64_t) src[2]) << 8; 6976 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 6977 break; 6978 case 8: 6979 ret = src[7] | ((uint64_t) src[6]) << 8; 6980 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 6981 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 6982 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 6983 break; 6984 default: 6985 return (0); 6986 break; 6987 } 6988 6989 *data += bytes_to_read; 6990 6991 return (ret); 6992 } 6993 6994 static int64_t 6995 _decode_sleb128(uint8_t **dp, uint8_t *dpe) 6996 { 6997 int64_t ret = 0; 6998 uint8_t b = 0; 6999 int shift = 0; 7000 7001 uint8_t *src = *dp; 7002 7003 do { 7004 if (src >= dpe) 7005 break; 7006 b = *src++; 7007 ret |= ((b & 0x7f) << shift); 7008 shift += 7; 7009 } while ((b & 0x80) != 0); 7010 7011 if (shift < 32 && (b & 0x40) != 0) 7012 ret |= (-1 << shift); 7013 7014 *dp = src; 7015 7016 return (ret); 7017 } 7018 7019 static uint64_t 7020 _decode_uleb128(uint8_t **dp, uint8_t *dpe) 7021 { 7022 uint64_t ret = 0; 7023 uint8_t b; 7024 int shift = 0; 7025 7026 uint8_t *src = *dp; 7027 7028 do { 7029 if (src >= dpe) 7030 break; 7031 b = *src++; 7032 ret |= ((b & 0x7f) << shift); 7033 shift += 7; 7034 } while ((b & 0x80) != 0); 7035 7036 *dp = src; 7037 7038 return (ret); 7039 } 7040 7041 static void 7042 readelf_version(void) 7043 { 7044 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), 7045 elftc_version()); 7046 exit(EXIT_SUCCESS); 7047 } 7048 7049 #define USAGE_MESSAGE "\ 7050 Usage: %s [options] file...\n\ 7051 Display information about ELF objects and ar(1) archives.\n\n\ 7052 Options:\n\ 7053 -a | --all Equivalent to specifying options '-dhIlrsASV'.\n\ 7054 -c | --archive-index Print the archive symbol table for archives.\n\ 7055 -d | --dynamic Print the contents of SHT_DYNAMIC sections.\n\ 7056 -e | --headers Print all headers in the object.\n\ 7057 -g | --section-groups Print the contents of the section groups.\n\ 7058 -h | --file-header Print the file header for the object.\n\ 7059 -l | --program-headers Print the PHDR table for the object.\n\ 7060 -n | --notes Print the contents of SHT_NOTE sections.\n\ 7061 -p INDEX | --string-dump=INDEX\n\ 7062 Print the contents of section at index INDEX.\n\ 7063 -r | --relocs Print relocation information.\n\ 7064 -s | --syms | --symbols Print symbol tables.\n\ 7065 -t | --section-details Print additional information about sections.\n\ 7066 -v | --version Print a version identifier and exit.\n\ 7067 -w[afilmoprsFLR] | --debug-dump={abbrev,aranges,decodedline,frames,\n\ 7068 frames-interp,info,loc,macro,pubnames,\n\ 7069 ranges,Ranges,rawline,str}\n\ 7070 Display DWARF information.\n\ 7071 -x INDEX | --hex-dump=INDEX\n\ 7072 Display contents of a section as hexadecimal.\n\ 7073 -A | --arch-specific (accepted, but ignored)\n\ 7074 -D | --use-dynamic Print the symbol table specified by the DT_SYMTAB\n\ 7075 entry in the \".dynamic\" section.\n\ 7076 -H | --help Print a help message.\n\ 7077 -I | --histogram Print information on bucket list lengths for \n\ 7078 hash sections.\n\ 7079 -N | --full-section-name (accepted, but ignored)\n\ 7080 -S | --sections | --section-headers\n\ 7081 Print information about section headers.\n\ 7082 -V | --version-info Print symbol versoning information.\n\ 7083 -W | --wide Print information without wrapping long lines.\n" 7084 7085 7086 static void 7087 readelf_usage(int status) 7088 { 7089 fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME()); 7090 exit(status); 7091 } 7092 7093 int 7094 main(int argc, char **argv) 7095 { 7096 struct readelf *re, re_storage; 7097 unsigned long si; 7098 int opt, i; 7099 char *ep; 7100 7101 re = &re_storage; 7102 memset(re, 0, sizeof(*re)); 7103 STAILQ_INIT(&re->v_dumpop); 7104 7105 while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:", 7106 longopts, NULL)) != -1) { 7107 switch(opt) { 7108 case '?': 7109 readelf_usage(EXIT_SUCCESS); 7110 break; 7111 case 'A': 7112 re->options |= RE_AA; 7113 break; 7114 case 'a': 7115 re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II | 7116 RE_L | RE_R | RE_SS | RE_S | RE_VV; 7117 break; 7118 case 'c': 7119 re->options |= RE_C; 7120 break; 7121 case 'D': 7122 re->options |= RE_DD; 7123 break; 7124 case 'd': 7125 re->options |= RE_D; 7126 break; 7127 case 'e': 7128 re->options |= RE_H | RE_L | RE_SS; 7129 break; 7130 case 'g': 7131 re->options |= RE_G; 7132 break; 7133 case 'H': 7134 readelf_usage(EXIT_SUCCESS); 7135 break; 7136 case 'h': 7137 re->options |= RE_H; 7138 break; 7139 case 'I': 7140 re->options |= RE_II; 7141 break; 7142 case 'i': 7143 /* Not implemented yet. */ 7144 break; 7145 case 'l': 7146 re->options |= RE_L; 7147 break; 7148 case 'N': 7149 re->options |= RE_NN; 7150 break; 7151 case 'n': 7152 re->options |= RE_N; 7153 break; 7154 case 'p': 7155 re->options |= RE_P; 7156 si = strtoul(optarg, &ep, 10); 7157 if (*ep == '\0') 7158 add_dumpop(re, (size_t) si, NULL, STR_DUMP, 7159 DUMP_BY_INDEX); 7160 else 7161 add_dumpop(re, 0, optarg, STR_DUMP, 7162 DUMP_BY_NAME); 7163 break; 7164 case 'r': 7165 re->options |= RE_R; 7166 break; 7167 case 'S': 7168 re->options |= RE_SS; 7169 break; 7170 case 's': 7171 re->options |= RE_S; 7172 break; 7173 case 't': 7174 re->options |= RE_T; 7175 break; 7176 case 'u': 7177 re->options |= RE_U; 7178 break; 7179 case 'V': 7180 re->options |= RE_VV; 7181 break; 7182 case 'v': 7183 readelf_version(); 7184 break; 7185 case 'W': 7186 re->options |= RE_WW; 7187 break; 7188 case 'w': 7189 re->options |= RE_W; 7190 parse_dwarf_op_short(re, optarg); 7191 break; 7192 case 'x': 7193 re->options |= RE_X; 7194 si = strtoul(optarg, &ep, 10); 7195 if (*ep == '\0') 7196 add_dumpop(re, (size_t) si, NULL, HEX_DUMP, 7197 DUMP_BY_INDEX); 7198 else 7199 add_dumpop(re, 0, optarg, HEX_DUMP, 7200 DUMP_BY_NAME); 7201 break; 7202 case OPTION_DEBUG_DUMP: 7203 re->options |= RE_W; 7204 parse_dwarf_op_long(re, optarg); 7205 } 7206 } 7207 7208 argv += optind; 7209 argc -= optind; 7210 7211 if (argc == 0 || re->options == 0) 7212 readelf_usage(EXIT_FAILURE); 7213 7214 if (argc > 1) 7215 re->flags |= DISPLAY_FILENAME; 7216 7217 if (elf_version(EV_CURRENT) == EV_NONE) 7218 errx(EXIT_FAILURE, "ELF library initialization failed: %s", 7219 elf_errmsg(-1)); 7220 7221 for (i = 0; i < argc; i++) { 7222 re->filename = argv[i]; 7223 dump_object(re); 7224 } 7225 7226 exit(EXIT_SUCCESS); 7227 } 7228