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