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