1 /*- 2 * Copyright (c) 2009-2015 Kai Wang 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/param.h> 28 #include <sys/queue.h> 29 #include <ar.h> 30 #include <assert.h> 31 #include <ctype.h> 32 #include <dwarf.h> 33 #include <err.h> 34 #include <fcntl.h> 35 #include <gelf.h> 36 #include <getopt.h> 37 #include <libdwarf.h> 38 #include <libelftc.h> 39 #include <libgen.h> 40 #include <stdarg.h> 41 #include <stdint.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <time.h> 46 #include <unistd.h> 47 48 #include "_elftc.h" 49 50 ELFTC_VCSID("$Id: readelf.c 3649 2018-11-24 03:26:23Z emaste $"); 51 52 /* Backwards compatability for older FreeBSD releases. */ 53 #ifndef STB_GNU_UNIQUE 54 #define STB_GNU_UNIQUE 10 55 #endif 56 #ifndef STT_SPARC_REGISTER 57 #define STT_SPARC_REGISTER 13 58 #endif 59 60 61 /* 62 * readelf(1) options. 63 */ 64 #define RE_AA 0x00000001 65 #define RE_C 0x00000002 66 #define RE_DD 0x00000004 67 #define RE_D 0x00000008 68 #define RE_G 0x00000010 69 #define RE_H 0x00000020 70 #define RE_II 0x00000040 71 #define RE_I 0x00000080 72 #define RE_L 0x00000100 73 #define RE_NN 0x00000200 74 #define RE_N 0x00000400 75 #define RE_P 0x00000800 76 #define RE_R 0x00001000 77 #define RE_SS 0x00002000 78 #define RE_S 0x00004000 79 #define RE_T 0x00008000 80 #define RE_U 0x00010000 81 #define RE_VV 0x00020000 82 #define RE_WW 0x00040000 83 #define RE_W 0x00080000 84 #define RE_X 0x00100000 85 86 /* 87 * dwarf dump options. 88 */ 89 #define DW_A 0x00000001 90 #define DW_FF 0x00000002 91 #define DW_F 0x00000004 92 #define DW_I 0x00000008 93 #define DW_LL 0x00000010 94 #define DW_L 0x00000020 95 #define DW_M 0x00000040 96 #define DW_O 0x00000080 97 #define DW_P 0x00000100 98 #define DW_RR 0x00000200 99 #define DW_R 0x00000400 100 #define DW_S 0x00000800 101 102 #define DW_DEFAULT_OPTIONS (DW_A | DW_F | DW_I | DW_L | DW_O | DW_P | \ 103 DW_R | DW_RR | DW_S) 104 105 /* 106 * readelf(1) run control flags. 107 */ 108 #define DISPLAY_FILENAME 0x0001 109 110 /* 111 * Internal data structure for sections. 112 */ 113 struct section { 114 const char *name; /* section name */ 115 Elf_Scn *scn; /* section scn */ 116 uint64_t off; /* section offset */ 117 uint64_t sz; /* section size */ 118 uint64_t entsize; /* section entsize */ 119 uint64_t align; /* section alignment */ 120 uint64_t type; /* section type */ 121 uint64_t flags; /* section flags */ 122 uint64_t addr; /* section virtual addr */ 123 uint32_t link; /* section link ndx */ 124 uint32_t info; /* section info ndx */ 125 }; 126 127 struct dumpop { 128 union { 129 size_t si; /* section index */ 130 const char *sn; /* section name */ 131 } u; 132 enum { 133 DUMP_BY_INDEX = 0, 134 DUMP_BY_NAME 135 } type; /* dump type */ 136 #define HEX_DUMP 0x0001 137 #define STR_DUMP 0x0002 138 int op; /* dump operation */ 139 STAILQ_ENTRY(dumpop) dumpop_list; 140 }; 141 142 struct symver { 143 const char *name; 144 int type; 145 }; 146 147 /* 148 * Structure encapsulates the global data for readelf(1). 149 */ 150 struct readelf { 151 const char *filename; /* current processing file. */ 152 int options; /* command line options. */ 153 int flags; /* run control flags. */ 154 int dop; /* dwarf dump options. */ 155 Elf *elf; /* underlying ELF descriptor. */ 156 Elf *ar; /* archive ELF descriptor. */ 157 Dwarf_Debug dbg; /* DWARF handle. */ 158 Dwarf_Half cu_psize; /* DWARF CU pointer size. */ 159 Dwarf_Half cu_osize; /* DWARF CU offset size. */ 160 Dwarf_Half cu_ver; /* DWARF CU version. */ 161 GElf_Ehdr ehdr; /* ELF header. */ 162 int ec; /* ELF class. */ 163 size_t shnum; /* #sections. */ 164 struct section *vd_s; /* Verdef section. */ 165 struct section *vn_s; /* Verneed section. */ 166 struct section *vs_s; /* Versym section. */ 167 uint16_t *vs; /* Versym array. */ 168 int vs_sz; /* Versym array size. */ 169 struct symver *ver; /* Version array. */ 170 int ver_sz; /* Size of version array. */ 171 struct section *sl; /* list of sections. */ 172 STAILQ_HEAD(, dumpop) v_dumpop; /* list of dump ops. */ 173 uint64_t (*dw_read)(Elf_Data *, uint64_t *, int); 174 uint64_t (*dw_decode)(uint8_t **, int); 175 }; 176 177 enum options 178 { 179 OPTION_DEBUG_DUMP 180 }; 181 182 static struct option longopts[] = { 183 {"all", no_argument, NULL, 'a'}, 184 {"arch-specific", no_argument, NULL, 'A'}, 185 {"archive-index", no_argument, NULL, 'c'}, 186 {"debug-dump", optional_argument, NULL, OPTION_DEBUG_DUMP}, 187 {"dynamic", no_argument, NULL, 'd'}, 188 {"file-header", no_argument, NULL, 'h'}, 189 {"full-section-name", no_argument, NULL, 'N'}, 190 {"headers", no_argument, NULL, 'e'}, 191 {"help", no_argument, 0, 'H'}, 192 {"hex-dump", required_argument, NULL, 'x'}, 193 {"histogram", no_argument, NULL, 'I'}, 194 {"notes", no_argument, NULL, 'n'}, 195 {"program-headers", no_argument, NULL, 'l'}, 196 {"relocs", no_argument, NULL, 'r'}, 197 {"sections", no_argument, NULL, 'S'}, 198 {"section-headers", no_argument, NULL, 'S'}, 199 {"section-groups", no_argument, NULL, 'g'}, 200 {"section-details", no_argument, NULL, 't'}, 201 {"segments", no_argument, NULL, 'l'}, 202 {"string-dump", required_argument, NULL, 'p'}, 203 {"symbols", no_argument, NULL, 's'}, 204 {"syms", no_argument, NULL, 's'}, 205 {"unwind", no_argument, NULL, 'u'}, 206 {"use-dynamic", no_argument, NULL, 'D'}, 207 {"version-info", no_argument, 0, 'V'}, 208 {"version", no_argument, 0, 'v'}, 209 {"wide", no_argument, 0, 'W'}, 210 {NULL, 0, NULL, 0} 211 }; 212 213 struct eflags_desc { 214 uint64_t flag; 215 const char *desc; 216 }; 217 218 struct mips_option { 219 uint64_t flag; 220 const char *desc; 221 }; 222 223 struct flag_desc { 224 uint64_t flag; 225 const char *desc; 226 }; 227 228 struct loc_at { 229 Dwarf_Attribute la_at; 230 Dwarf_Unsigned la_off; 231 Dwarf_Unsigned la_lowpc; 232 Dwarf_Half la_cu_psize; 233 Dwarf_Half la_cu_osize; 234 Dwarf_Half la_cu_ver; 235 }; 236 237 static void add_dumpop(struct readelf *re, size_t si, const char *sn, int op, 238 int t); 239 static const char *aeabi_adv_simd_arch(uint64_t simd); 240 static const char *aeabi_align_needed(uint64_t an); 241 static const char *aeabi_align_preserved(uint64_t ap); 242 static const char *aeabi_arm_isa(uint64_t ai); 243 static const char *aeabi_cpu_arch(uint64_t arch); 244 static const char *aeabi_cpu_arch_profile(uint64_t pf); 245 static const char *aeabi_div(uint64_t du); 246 static const char *aeabi_enum_size(uint64_t es); 247 static const char *aeabi_fp_16bit_format(uint64_t fp16); 248 static const char *aeabi_fp_arch(uint64_t fp); 249 static const char *aeabi_fp_denormal(uint64_t fd); 250 static const char *aeabi_fp_exceptions(uint64_t fe); 251 static const char *aeabi_fp_hpext(uint64_t fh); 252 static const char *aeabi_fp_number_model(uint64_t fn); 253 static const char *aeabi_fp_optm_goal(uint64_t fog); 254 static const char *aeabi_fp_rounding(uint64_t fr); 255 static const char *aeabi_hardfp(uint64_t hfp); 256 static const char *aeabi_mpext(uint64_t mp); 257 static const char *aeabi_optm_goal(uint64_t og); 258 static const char *aeabi_pcs_config(uint64_t pcs); 259 static const char *aeabi_pcs_got(uint64_t got); 260 static const char *aeabi_pcs_r9(uint64_t r9); 261 static const char *aeabi_pcs_ro(uint64_t ro); 262 static const char *aeabi_pcs_rw(uint64_t rw); 263 static const char *aeabi_pcs_wchar_t(uint64_t wt); 264 static const char *aeabi_t2ee(uint64_t t2ee); 265 static const char *aeabi_thumb_isa(uint64_t ti); 266 static const char *aeabi_fp_user_exceptions(uint64_t fu); 267 static const char *aeabi_unaligned_access(uint64_t ua); 268 static const char *aeabi_vfp_args(uint64_t va); 269 static const char *aeabi_virtual(uint64_t vt); 270 static const char *aeabi_wmmx_arch(uint64_t wmmx); 271 static const char *aeabi_wmmx_args(uint64_t wa); 272 static const char *elf_class(unsigned int class); 273 static const char *elf_endian(unsigned int endian); 274 static const char *elf_machine(unsigned int mach); 275 static const char *elf_osabi(unsigned int abi); 276 static const char *elf_type(unsigned int type); 277 static const char *elf_ver(unsigned int ver); 278 static const char *dt_type(unsigned int mach, unsigned int dtype); 279 static void dump_ar(struct readelf *re, int); 280 static void dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 281 static void dump_attributes(struct readelf *re); 282 static uint8_t *dump_compatibility_tag(uint8_t *p, uint8_t *pe); 283 static void dump_dwarf(struct readelf *re); 284 static void dump_dwarf_abbrev(struct readelf *re); 285 static void dump_dwarf_aranges(struct readelf *re); 286 static void dump_dwarf_block(struct readelf *re, uint8_t *b, 287 Dwarf_Unsigned len); 288 static void dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level); 289 static void dump_dwarf_frame(struct readelf *re, int alt); 290 static void dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, 291 uint8_t *insts, Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, 292 Dwarf_Addr pc, Dwarf_Debug dbg); 293 static int dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, 294 Dwarf_Addr pc, Dwarf_Unsigned func_len, Dwarf_Half cie_ra); 295 static void dump_dwarf_frame_section(struct readelf *re, struct section *s, 296 int alt); 297 static void dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info); 298 static void dump_dwarf_macinfo(struct readelf *re); 299 static void dump_dwarf_line(struct readelf *re); 300 static void dump_dwarf_line_decoded(struct readelf *re); 301 static void dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr); 302 static void dump_dwarf_loclist(struct readelf *re); 303 static void dump_dwarf_pubnames(struct readelf *re); 304 static void dump_dwarf_ranges(struct readelf *re); 305 static void dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, 306 Dwarf_Addr base); 307 static void dump_dwarf_str(struct readelf *re); 308 static void dump_eflags(struct readelf *re, uint64_t e_flags); 309 static void dump_elf(struct readelf *re); 310 static void dump_flags(struct flag_desc *fd, uint64_t flags); 311 static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab); 312 static void dump_dynamic(struct readelf *re); 313 static void dump_liblist(struct readelf *re); 314 static void dump_mips_abiflags(struct readelf *re, struct section *s); 315 static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 316 static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz); 317 static void dump_mips_options(struct readelf *re, struct section *s); 318 static void dump_mips_option_flags(const char *name, struct mips_option *opt, 319 uint64_t info); 320 static void dump_mips_reginfo(struct readelf *re, struct section *s); 321 static void dump_mips_specific_info(struct readelf *re); 322 static void dump_notes(struct readelf *re); 323 static void dump_notes_content(struct readelf *re, const char *buf, size_t sz, 324 off_t off); 325 static void dump_notes_data(const char *name, uint32_t type, const char *buf, 326 size_t sz); 327 static void dump_svr4_hash(struct section *s); 328 static void dump_svr4_hash64(struct readelf *re, struct section *s); 329 static void dump_gnu_hash(struct readelf *re, struct section *s); 330 static void dump_hash(struct readelf *re); 331 static void dump_phdr(struct readelf *re); 332 static void dump_ppc_attributes(uint8_t *p, uint8_t *pe); 333 static void dump_section_groups(struct readelf *re); 334 static void dump_symtab(struct readelf *re, int i); 335 static void dump_symtabs(struct readelf *re); 336 static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe); 337 static void dump_ver(struct readelf *re); 338 static void dump_verdef(struct readelf *re, int dump); 339 static void dump_verneed(struct readelf *re, int dump); 340 static void dump_versym(struct readelf *re); 341 static const char *dwarf_reg(unsigned int mach, unsigned int reg); 342 static const char *dwarf_regname(struct readelf *re, unsigned int num); 343 static struct dumpop *find_dumpop(struct readelf *re, size_t si, 344 const char *sn, int op, int t); 345 static int get_ent_count(struct section *s, int *ent_count); 346 static int get_mips_register_size(uint8_t flag); 347 static char *get_regoff_str(struct readelf *re, Dwarf_Half reg, 348 Dwarf_Addr off); 349 static const char *get_string(struct readelf *re, int strtab, size_t off); 350 static const char *get_symbol_name(struct readelf *re, int symtab, int i); 351 static uint64_t get_symbol_value(struct readelf *re, int symtab, int i); 352 static void load_sections(struct readelf *re); 353 static int loc_at_comparator(const void *la1, const void *la2); 354 static const char *mips_abi_fp(uint64_t fp); 355 static const char *note_type(const char *note_name, unsigned int et, 356 unsigned int nt); 357 static const char *note_type_freebsd(unsigned int nt); 358 static const char *note_type_freebsd_core(unsigned int nt); 359 static const char *note_type_linux_core(unsigned int nt); 360 static const char *note_type_gnu(unsigned int nt); 361 static const char *note_type_netbsd(unsigned int nt); 362 static const char *note_type_openbsd(unsigned int nt); 363 static const char *note_type_unknown(unsigned int nt); 364 static const char *note_type_xen(unsigned int nt); 365 static const char *option_kind(uint8_t kind); 366 static const char *phdr_type(unsigned int mach, unsigned int ptype); 367 static const char *ppc_abi_fp(uint64_t fp); 368 static const char *ppc_abi_vector(uint64_t vec); 369 static void readelf_usage(int status); 370 static void readelf_version(void); 371 static void search_loclist_at(struct readelf *re, Dwarf_Die die, 372 Dwarf_Unsigned lowpc, struct loc_at **la_list, 373 size_t *la_list_len, size_t *la_list_cap); 374 static void search_ver(struct readelf *re); 375 static const char *section_type(unsigned int mach, unsigned int stype); 376 static void set_cu_context(struct readelf *re, Dwarf_Half psize, 377 Dwarf_Half osize, Dwarf_Half ver); 378 static const char *st_bind(unsigned int sbind); 379 static const char *st_shndx(unsigned int shndx); 380 static const char *st_type(unsigned int mach, unsigned int os, 381 unsigned int stype); 382 static const char *st_vis(unsigned int svis); 383 static const char *top_tag(unsigned int tag); 384 static void unload_sections(struct readelf *re); 385 static uint64_t _read_lsb(Elf_Data *d, uint64_t *offsetp, 386 int bytes_to_read); 387 static uint64_t _read_msb(Elf_Data *d, uint64_t *offsetp, 388 int bytes_to_read); 389 static uint64_t _decode_lsb(uint8_t **data, int bytes_to_read); 390 static uint64_t _decode_msb(uint8_t **data, int bytes_to_read); 391 static int64_t _decode_sleb128(uint8_t **dp, uint8_t *dpe); 392 static uint64_t _decode_uleb128(uint8_t **dp, uint8_t *dpe); 393 394 static struct eflags_desc arm_eflags_desc[] = { 395 {EF_ARM_RELEXEC, "relocatable executable"}, 396 {EF_ARM_HASENTRY, "has entry point"}, 397 {EF_ARM_SYMSARESORTED, "sorted symbol tables"}, 398 {EF_ARM_DYNSYMSUSESEGIDX, "dynamic symbols use segment index"}, 399 {EF_ARM_MAPSYMSFIRST, "mapping symbols precede others"}, 400 {EF_ARM_BE8, "BE8"}, 401 {EF_ARM_LE8, "LE8"}, 402 {EF_ARM_INTERWORK, "interworking enabled"}, 403 {EF_ARM_APCS_26, "uses APCS/26"}, 404 {EF_ARM_APCS_FLOAT, "uses APCS/float"}, 405 {EF_ARM_PIC, "position independent"}, 406 {EF_ARM_ALIGN8, "8 bit structure alignment"}, 407 {EF_ARM_NEW_ABI, "uses new ABI"}, 408 {EF_ARM_OLD_ABI, "uses old ABI"}, 409 {EF_ARM_SOFT_FLOAT, "software FP"}, 410 {EF_ARM_VFP_FLOAT, "VFP"}, 411 {EF_ARM_MAVERICK_FLOAT, "Maverick FP"}, 412 {0, NULL} 413 }; 414 415 static struct eflags_desc mips_eflags_desc[] = { 416 {EF_MIPS_NOREORDER, "noreorder"}, 417 {EF_MIPS_PIC, "pic"}, 418 {EF_MIPS_CPIC, "cpic"}, 419 {EF_MIPS_UCODE, "ugen_reserved"}, 420 {EF_MIPS_ABI2, "abi2"}, 421 {EF_MIPS_OPTIONS_FIRST, "odk first"}, 422 {EF_MIPS_ARCH_ASE_MDMX, "mdmx"}, 423 {EF_MIPS_ARCH_ASE_M16, "mips16"}, 424 {0, NULL} 425 }; 426 427 static struct eflags_desc powerpc_eflags_desc[] = { 428 {EF_PPC_EMB, "emb"}, 429 {EF_PPC_RELOCATABLE, "relocatable"}, 430 {EF_PPC_RELOCATABLE_LIB, "relocatable-lib"}, 431 {0, NULL} 432 }; 433 434 static struct eflags_desc riscv_eflags_desc[] = { 435 {EF_RISCV_RVC, "RVC"}, 436 {EF_RISCV_RVE, "RVE"}, 437 {EF_RISCV_TSO, "TSO"}, 438 {0, NULL} 439 }; 440 441 static struct eflags_desc sparc_eflags_desc[] = { 442 {EF_SPARC_32PLUS, "v8+"}, 443 {EF_SPARC_SUN_US1, "ultrasparcI"}, 444 {EF_SPARC_HAL_R1, "halr1"}, 445 {EF_SPARC_SUN_US3, "ultrasparcIII"}, 446 {0, NULL} 447 }; 448 449 static const char * 450 elf_osabi(unsigned int abi) 451 { 452 static char s_abi[32]; 453 454 switch(abi) { 455 case ELFOSABI_NONE: return "NONE"; 456 case ELFOSABI_HPUX: return "HPUX"; 457 case ELFOSABI_NETBSD: return "NetBSD"; 458 case ELFOSABI_GNU: return "GNU"; 459 case ELFOSABI_HURD: return "HURD"; 460 case ELFOSABI_86OPEN: return "86OPEN"; 461 case ELFOSABI_SOLARIS: return "Solaris"; 462 case ELFOSABI_AIX: return "AIX"; 463 case ELFOSABI_IRIX: return "IRIX"; 464 case ELFOSABI_FREEBSD: return "FreeBSD"; 465 case ELFOSABI_TRU64: return "TRU64"; 466 case ELFOSABI_MODESTO: return "MODESTO"; 467 case ELFOSABI_OPENBSD: return "OpenBSD"; 468 case ELFOSABI_OPENVMS: return "OpenVMS"; 469 case ELFOSABI_NSK: return "NSK"; 470 case ELFOSABI_CLOUDABI: return "CloudABI"; 471 case ELFOSABI_ARM_AEABI: return "ARM EABI"; 472 case ELFOSABI_ARM: return "ARM"; 473 case ELFOSABI_STANDALONE: return "StandAlone"; 474 default: 475 snprintf(s_abi, sizeof(s_abi), "<unknown: %#x>", abi); 476 return (s_abi); 477 } 478 }; 479 480 static const char * 481 elf_machine(unsigned int mach) 482 { 483 static char s_mach[32]; 484 485 switch (mach) { 486 case EM_NONE: return "Unknown machine"; 487 case EM_M32: return "AT&T WE32100"; 488 case EM_SPARC: return "Sun SPARC"; 489 case EM_386: return "Intel i386"; 490 case EM_68K: return "Motorola 68000"; 491 case EM_IAMCU: return "Intel MCU"; 492 case EM_88K: return "Motorola 88000"; 493 case EM_860: return "Intel i860"; 494 case EM_MIPS: return "MIPS R3000 Big-Endian only"; 495 case EM_S370: return "IBM System/370"; 496 case EM_MIPS_RS3_LE: return "MIPS R3000 Little-Endian"; 497 case EM_PARISC: return "HP PA-RISC"; 498 case EM_VPP500: return "Fujitsu VPP500"; 499 case EM_SPARC32PLUS: return "SPARC v8plus"; 500 case EM_960: return "Intel 80960"; 501 case EM_PPC: return "PowerPC 32-bit"; 502 case EM_PPC64: return "PowerPC 64-bit"; 503 case EM_S390: return "IBM System/390"; 504 case EM_V800: return "NEC V800"; 505 case EM_FR20: return "Fujitsu FR20"; 506 case EM_RH32: return "TRW RH-32"; 507 case EM_RCE: return "Motorola RCE"; 508 case EM_ARM: return "ARM"; 509 case EM_SH: return "Hitachi SH"; 510 case EM_SPARCV9: return "SPARC v9 64-bit"; 511 case EM_TRICORE: return "Siemens TriCore embedded processor"; 512 case EM_ARC: return "Argonaut RISC Core"; 513 case EM_H8_300: return "Hitachi H8/300"; 514 case EM_H8_300H: return "Hitachi H8/300H"; 515 case EM_H8S: return "Hitachi H8S"; 516 case EM_H8_500: return "Hitachi H8/500"; 517 case EM_IA_64: return "Intel IA-64 Processor"; 518 case EM_MIPS_X: return "Stanford MIPS-X"; 519 case EM_COLDFIRE: return "Motorola ColdFire"; 520 case EM_68HC12: return "Motorola M68HC12"; 521 case EM_MMA: return "Fujitsu MMA"; 522 case EM_PCP: return "Siemens PCP"; 523 case EM_NCPU: return "Sony nCPU"; 524 case EM_NDR1: return "Denso NDR1 microprocessor"; 525 case EM_STARCORE: return "Motorola Star*Core processor"; 526 case EM_ME16: return "Toyota ME16 processor"; 527 case EM_ST100: return "STMicroelectronics ST100 processor"; 528 case EM_TINYJ: return "Advanced Logic Corp. TinyJ processor"; 529 case EM_X86_64: return "Advanced Micro Devices x86-64"; 530 case EM_PDSP: return "Sony DSP Processor"; 531 case EM_FX66: return "Siemens FX66 microcontroller"; 532 case EM_ST9PLUS: return "STMicroelectronics ST9+ 8/16 microcontroller"; 533 case EM_ST7: return "STmicroelectronics ST7 8-bit microcontroller"; 534 case EM_68HC16: return "Motorola MC68HC16 microcontroller"; 535 case EM_68HC11: return "Motorola MC68HC11 microcontroller"; 536 case EM_68HC08: return "Motorola MC68HC08 microcontroller"; 537 case EM_68HC05: return "Motorola MC68HC05 microcontroller"; 538 case EM_SVX: return "Silicon Graphics SVx"; 539 case EM_ST19: return "STMicroelectronics ST19 8-bit mc"; 540 case EM_VAX: return "Digital VAX"; 541 case EM_CRIS: return "Axis Communications 32-bit embedded processor"; 542 case EM_JAVELIN: return "Infineon Tech. 32bit embedded processor"; 543 case EM_FIREPATH: return "Element 14 64-bit DSP Processor"; 544 case EM_ZSP: return "LSI Logic 16-bit DSP Processor"; 545 case EM_MMIX: return "Donald Knuth's educational 64-bit proc"; 546 case EM_HUANY: return "Harvard University MI object files"; 547 case EM_PRISM: return "SiTera Prism"; 548 case EM_AVR: return "Atmel AVR 8-bit microcontroller"; 549 case EM_FR30: return "Fujitsu FR30"; 550 case EM_D10V: return "Mitsubishi D10V"; 551 case EM_D30V: return "Mitsubishi D30V"; 552 case EM_V850: return "NEC v850"; 553 case EM_M32R: return "Mitsubishi M32R"; 554 case EM_MN10300: return "Matsushita MN10300"; 555 case EM_MN10200: return "Matsushita MN10200"; 556 case EM_PJ: return "picoJava"; 557 case EM_OPENRISC: return "OpenRISC 32-bit embedded processor"; 558 case EM_ARC_A5: return "ARC Cores Tangent-A5"; 559 case EM_XTENSA: return "Tensilica Xtensa Architecture"; 560 case EM_VIDEOCORE: return "Alphamosaic VideoCore processor"; 561 case EM_TMM_GPP: return "Thompson Multimedia General Purpose Processor"; 562 case EM_NS32K: return "National Semiconductor 32000 series"; 563 case EM_TPC: return "Tenor Network TPC processor"; 564 case EM_SNP1K: return "Trebia SNP 1000 processor"; 565 case EM_ST200: return "STMicroelectronics ST200 microcontroller"; 566 case EM_IP2K: return "Ubicom IP2xxx microcontroller family"; 567 case EM_MAX: return "MAX Processor"; 568 case EM_CR: return "National Semiconductor CompactRISC microprocessor"; 569 case EM_F2MC16: return "Fujitsu F2MC16"; 570 case EM_MSP430: return "TI embedded microcontroller msp430"; 571 case EM_BLACKFIN: return "Analog Devices Blackfin (DSP) processor"; 572 case EM_SE_C33: return "S1C33 Family of Seiko Epson processors"; 573 case EM_SEP: return "Sharp embedded microprocessor"; 574 case EM_ARCA: return "Arca RISC Microprocessor"; 575 case EM_UNICORE: return "Microprocessor series from PKU-Unity Ltd"; 576 case EM_AARCH64: return "AArch64"; 577 case EM_RISCV: return "RISC-V"; 578 default: 579 snprintf(s_mach, sizeof(s_mach), "<unknown: %#x>", mach); 580 return (s_mach); 581 } 582 583 } 584 585 static const char * 586 elf_class(unsigned int class) 587 { 588 static char s_class[32]; 589 590 switch (class) { 591 case ELFCLASSNONE: return "none"; 592 case ELFCLASS32: return "ELF32"; 593 case ELFCLASS64: return "ELF64"; 594 default: 595 snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class); 596 return (s_class); 597 } 598 } 599 600 static const char * 601 elf_endian(unsigned int endian) 602 { 603 static char s_endian[32]; 604 605 switch (endian) { 606 case ELFDATANONE: return "none"; 607 case ELFDATA2LSB: return "2's complement, little endian"; 608 case ELFDATA2MSB: return "2's complement, big endian"; 609 default: 610 snprintf(s_endian, sizeof(s_endian), "<unknown: %#x>", endian); 611 return (s_endian); 612 } 613 } 614 615 static const char * 616 elf_type(unsigned int type) 617 { 618 static char s_type[32]; 619 620 switch (type) { 621 case ET_NONE: return "NONE (None)"; 622 case ET_REL: return "REL (Relocatable file)"; 623 case ET_EXEC: return "EXEC (Executable file)"; 624 case ET_DYN: return "DYN (Shared object file)"; 625 case ET_CORE: return "CORE (Core file)"; 626 default: 627 if (type >= ET_LOPROC) 628 snprintf(s_type, sizeof(s_type), "<proc: %#x>", type); 629 else if (type >= ET_LOOS && type <= ET_HIOS) 630 snprintf(s_type, sizeof(s_type), "<os: %#x>", type); 631 else 632 snprintf(s_type, sizeof(s_type), "<unknown: %#x>", 633 type); 634 return (s_type); 635 } 636 } 637 638 static const char * 639 elf_ver(unsigned int ver) 640 { 641 static char s_ver[32]; 642 643 switch (ver) { 644 case EV_CURRENT: return "(current)"; 645 case EV_NONE: return "(none)"; 646 default: 647 snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>", 648 ver); 649 return (s_ver); 650 } 651 } 652 653 static const char * 654 phdr_type(unsigned int mach, unsigned int ptype) 655 { 656 static char s_ptype[32]; 657 658 if (ptype >= PT_LOPROC && ptype <= PT_HIPROC) { 659 switch (mach) { 660 case EM_ARM: 661 switch (ptype) { 662 case PT_ARM_ARCHEXT: return "ARM_ARCHEXT"; 663 case PT_ARM_EXIDX: return "ARM_EXIDX"; 664 } 665 break; 666 } 667 snprintf(s_ptype, sizeof(s_ptype), "LOPROC+%#x", 668 ptype - PT_LOPROC); 669 return (s_ptype); 670 } 671 672 switch (ptype) { 673 case PT_NULL: return "NULL"; 674 case PT_LOAD: return "LOAD"; 675 case PT_DYNAMIC: return "DYNAMIC"; 676 case PT_INTERP: return "INTERP"; 677 case PT_NOTE: return "NOTE"; 678 case PT_SHLIB: return "SHLIB"; 679 case PT_PHDR: return "PHDR"; 680 case PT_TLS: return "TLS"; 681 case PT_GNU_EH_FRAME: return "GNU_EH_FRAME"; 682 case PT_GNU_STACK: return "GNU_STACK"; 683 case PT_GNU_RELRO: return "GNU_RELRO"; 684 case PT_OPENBSD_RANDOMIZE: return "OPENBSD_RANDOMIZE"; 685 case PT_OPENBSD_WXNEEDED: return "OPENBSD_WXNEEDED"; 686 case PT_OPENBSD_BOOTDATA: return "OPENBSD_BOOTDATA"; 687 default: 688 if (ptype >= PT_LOOS && ptype <= PT_HIOS) 689 snprintf(s_ptype, sizeof(s_ptype), "LOOS+%#x", 690 ptype - PT_LOOS); 691 else 692 snprintf(s_ptype, sizeof(s_ptype), "<unknown: %#x>", 693 ptype); 694 return (s_ptype); 695 } 696 } 697 698 static const char * 699 section_type(unsigned int mach, unsigned int stype) 700 { 701 static char s_stype[32]; 702 703 if (stype >= SHT_LOPROC && stype <= SHT_HIPROC) { 704 switch (mach) { 705 case EM_ARM: 706 switch (stype) { 707 case SHT_ARM_EXIDX: return "ARM_EXIDX"; 708 case SHT_ARM_PREEMPTMAP: return "ARM_PREEMPTMAP"; 709 case SHT_ARM_ATTRIBUTES: return "ARM_ATTRIBUTES"; 710 case SHT_ARM_DEBUGOVERLAY: return "ARM_DEBUGOVERLAY"; 711 case SHT_ARM_OVERLAYSECTION: return "ARM_OVERLAYSECTION"; 712 } 713 break; 714 case EM_X86_64: 715 switch (stype) { 716 case SHT_X86_64_UNWIND: return "X86_64_UNWIND"; 717 default: 718 break; 719 } 720 break; 721 case EM_MIPS: 722 case EM_MIPS_RS3_LE: 723 switch (stype) { 724 case SHT_MIPS_LIBLIST: return "MIPS_LIBLIST"; 725 case SHT_MIPS_MSYM: return "MIPS_MSYM"; 726 case SHT_MIPS_CONFLICT: return "MIPS_CONFLICT"; 727 case SHT_MIPS_GPTAB: return "MIPS_GPTAB"; 728 case SHT_MIPS_UCODE: return "MIPS_UCODE"; 729 case SHT_MIPS_DEBUG: return "MIPS_DEBUG"; 730 case SHT_MIPS_REGINFO: return "MIPS_REGINFO"; 731 case SHT_MIPS_PACKAGE: return "MIPS_PACKAGE"; 732 case SHT_MIPS_PACKSYM: return "MIPS_PACKSYM"; 733 case SHT_MIPS_RELD: return "MIPS_RELD"; 734 case SHT_MIPS_IFACE: return "MIPS_IFACE"; 735 case SHT_MIPS_CONTENT: return "MIPS_CONTENT"; 736 case SHT_MIPS_OPTIONS: return "MIPS_OPTIONS"; 737 case SHT_MIPS_DELTASYM: return "MIPS_DELTASYM"; 738 case SHT_MIPS_DELTAINST: return "MIPS_DELTAINST"; 739 case SHT_MIPS_DELTACLASS: return "MIPS_DELTACLASS"; 740 case SHT_MIPS_DWARF: return "MIPS_DWARF"; 741 case SHT_MIPS_DELTADECL: return "MIPS_DELTADECL"; 742 case SHT_MIPS_SYMBOL_LIB: return "MIPS_SYMBOL_LIB"; 743 case SHT_MIPS_EVENTS: return "MIPS_EVENTS"; 744 case SHT_MIPS_TRANSLATE: return "MIPS_TRANSLATE"; 745 case SHT_MIPS_PIXIE: return "MIPS_PIXIE"; 746 case SHT_MIPS_XLATE: return "MIPS_XLATE"; 747 case SHT_MIPS_XLATE_DEBUG: return "MIPS_XLATE_DEBUG"; 748 case SHT_MIPS_WHIRL: return "MIPS_WHIRL"; 749 case SHT_MIPS_EH_REGION: return "MIPS_EH_REGION"; 750 case SHT_MIPS_XLATE_OLD: return "MIPS_XLATE_OLD"; 751 case SHT_MIPS_PDR_EXCEPTION: return "MIPS_PDR_EXCEPTION"; 752 case SHT_MIPS_ABIFLAGS: return "MIPS_ABIFLAGS"; 753 default: 754 break; 755 } 756 break; 757 default: 758 break; 759 } 760 761 snprintf(s_stype, sizeof(s_stype), "LOPROC+%#x", 762 stype - SHT_LOPROC); 763 return (s_stype); 764 } 765 766 switch (stype) { 767 case SHT_NULL: return "NULL"; 768 case SHT_PROGBITS: return "PROGBITS"; 769 case SHT_SYMTAB: return "SYMTAB"; 770 case SHT_STRTAB: return "STRTAB"; 771 case SHT_RELA: return "RELA"; 772 case SHT_HASH: return "HASH"; 773 case SHT_DYNAMIC: return "DYNAMIC"; 774 case SHT_NOTE: return "NOTE"; 775 case SHT_NOBITS: return "NOBITS"; 776 case SHT_REL: return "REL"; 777 case SHT_SHLIB: return "SHLIB"; 778 case SHT_DYNSYM: return "DYNSYM"; 779 case SHT_INIT_ARRAY: return "INIT_ARRAY"; 780 case SHT_FINI_ARRAY: return "FINI_ARRAY"; 781 case SHT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 782 case SHT_GROUP: return "GROUP"; 783 case SHT_SYMTAB_SHNDX: return "SYMTAB_SHNDX"; 784 case SHT_SUNW_dof: return "SUNW_dof"; 785 case SHT_SUNW_cap: return "SUNW_cap"; 786 case SHT_GNU_HASH: return "GNU_HASH"; 787 case SHT_SUNW_ANNOTATE: return "SUNW_ANNOTATE"; 788 case SHT_SUNW_DEBUGSTR: return "SUNW_DEBUGSTR"; 789 case SHT_SUNW_DEBUG: return "SUNW_DEBUG"; 790 case SHT_SUNW_move: return "SUNW_move"; 791 case SHT_SUNW_COMDAT: return "SUNW_COMDAT"; 792 case SHT_SUNW_syminfo: return "SUNW_syminfo"; 793 case SHT_SUNW_verdef: return "SUNW_verdef"; 794 case SHT_SUNW_verneed: return "SUNW_verneed"; 795 case SHT_SUNW_versym: return "SUNW_versym"; 796 default: 797 if (stype >= SHT_LOOS && stype <= SHT_HIOS) 798 snprintf(s_stype, sizeof(s_stype), "LOOS+%#x", 799 stype - SHT_LOOS); 800 else if (stype >= SHT_LOUSER) 801 snprintf(s_stype, sizeof(s_stype), "LOUSER+%#x", 802 stype - SHT_LOUSER); 803 else 804 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 805 stype); 806 return (s_stype); 807 } 808 } 809 810 static const char * 811 dt_type(unsigned int mach, unsigned int dtype) 812 { 813 static char s_dtype[32]; 814 815 switch (dtype) { 816 case DT_NULL: return "NULL"; 817 case DT_NEEDED: return "NEEDED"; 818 case DT_PLTRELSZ: return "PLTRELSZ"; 819 case DT_PLTGOT: return "PLTGOT"; 820 case DT_HASH: return "HASH"; 821 case DT_STRTAB: return "STRTAB"; 822 case DT_SYMTAB: return "SYMTAB"; 823 case DT_RELA: return "RELA"; 824 case DT_RELASZ: return "RELASZ"; 825 case DT_RELAENT: return "RELAENT"; 826 case DT_STRSZ: return "STRSZ"; 827 case DT_SYMENT: return "SYMENT"; 828 case DT_INIT: return "INIT"; 829 case DT_FINI: return "FINI"; 830 case DT_SONAME: return "SONAME"; 831 case DT_RPATH: return "RPATH"; 832 case DT_SYMBOLIC: return "SYMBOLIC"; 833 case DT_REL: return "REL"; 834 case DT_RELSZ: return "RELSZ"; 835 case DT_RELENT: return "RELENT"; 836 case DT_PLTREL: return "PLTREL"; 837 case DT_DEBUG: return "DEBUG"; 838 case DT_TEXTREL: return "TEXTREL"; 839 case DT_JMPREL: return "JMPREL"; 840 case DT_BIND_NOW: return "BIND_NOW"; 841 case DT_INIT_ARRAY: return "INIT_ARRAY"; 842 case DT_FINI_ARRAY: return "FINI_ARRAY"; 843 case DT_INIT_ARRAYSZ: return "INIT_ARRAYSZ"; 844 case DT_FINI_ARRAYSZ: return "FINI_ARRAYSZ"; 845 case DT_RUNPATH: return "RUNPATH"; 846 case DT_FLAGS: return "FLAGS"; 847 case DT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 848 case DT_PREINIT_ARRAYSZ: return "PREINIT_ARRAYSZ"; 849 case DT_MAXPOSTAGS: return "MAXPOSTAGS"; 850 case DT_SUNW_AUXILIARY: return "SUNW_AUXILIARY"; 851 case DT_SUNW_RTLDINF: return "SUNW_RTLDINF"; 852 case DT_SUNW_FILTER: return "SUNW_FILTER"; 853 case DT_SUNW_CAP: return "SUNW_CAP"; 854 case DT_SUNW_ASLR: return "SUNW_ASLR"; 855 case DT_CHECKSUM: return "CHECKSUM"; 856 case DT_PLTPADSZ: return "PLTPADSZ"; 857 case DT_MOVEENT: return "MOVEENT"; 858 case DT_MOVESZ: return "MOVESZ"; 859 case DT_FEATURE: return "FEATURE"; 860 case DT_POSFLAG_1: return "POSFLAG_1"; 861 case DT_SYMINSZ: return "SYMINSZ"; 862 case DT_SYMINENT: return "SYMINENT"; 863 case DT_GNU_HASH: return "GNU_HASH"; 864 case DT_TLSDESC_PLT: return "DT_TLSDESC_PLT"; 865 case DT_TLSDESC_GOT: return "DT_TLSDESC_GOT"; 866 case DT_GNU_CONFLICT: return "GNU_CONFLICT"; 867 case DT_GNU_LIBLIST: return "GNU_LIBLIST"; 868 case DT_CONFIG: return "CONFIG"; 869 case DT_DEPAUDIT: return "DEPAUDIT"; 870 case DT_AUDIT: return "AUDIT"; 871 case DT_PLTPAD: return "PLTPAD"; 872 case DT_MOVETAB: return "MOVETAB"; 873 case DT_SYMINFO: return "SYMINFO"; 874 case DT_VERSYM: return "VERSYM"; 875 case DT_RELACOUNT: return "RELACOUNT"; 876 case DT_RELCOUNT: return "RELCOUNT"; 877 case DT_FLAGS_1: return "FLAGS_1"; 878 case DT_VERDEF: return "VERDEF"; 879 case DT_VERDEFNUM: return "VERDEFNUM"; 880 case DT_VERNEED: return "VERNEED"; 881 case DT_VERNEEDNUM: return "VERNEEDNUM"; 882 case DT_AUXILIARY: return "AUXILIARY"; 883 case DT_USED: return "USED"; 884 case DT_FILTER: return "FILTER"; 885 case DT_GNU_PRELINKED: return "GNU_PRELINKED"; 886 case DT_GNU_CONFLICTSZ: return "GNU_CONFLICTSZ"; 887 case DT_GNU_LIBLISTSZ: return "GNU_LIBLISTSZ"; 888 } 889 890 if (dtype >= DT_LOPROC && dtype <= DT_HIPROC) { 891 switch (mach) { 892 case EM_ARM: 893 switch (dtype) { 894 case DT_ARM_SYMTABSZ: 895 return "ARM_SYMTABSZ"; 896 default: 897 break; 898 } 899 break; 900 case EM_MIPS: 901 case EM_MIPS_RS3_LE: 902 switch (dtype) { 903 case DT_MIPS_RLD_VERSION: 904 return "MIPS_RLD_VERSION"; 905 case DT_MIPS_TIME_STAMP: 906 return "MIPS_TIME_STAMP"; 907 case DT_MIPS_ICHECKSUM: 908 return "MIPS_ICHECKSUM"; 909 case DT_MIPS_IVERSION: 910 return "MIPS_IVERSION"; 911 case DT_MIPS_FLAGS: 912 return "MIPS_FLAGS"; 913 case DT_MIPS_BASE_ADDRESS: 914 return "MIPS_BASE_ADDRESS"; 915 case DT_MIPS_CONFLICT: 916 return "MIPS_CONFLICT"; 917 case DT_MIPS_LIBLIST: 918 return "MIPS_LIBLIST"; 919 case DT_MIPS_LOCAL_GOTNO: 920 return "MIPS_LOCAL_GOTNO"; 921 case DT_MIPS_CONFLICTNO: 922 return "MIPS_CONFLICTNO"; 923 case DT_MIPS_LIBLISTNO: 924 return "MIPS_LIBLISTNO"; 925 case DT_MIPS_SYMTABNO: 926 return "MIPS_SYMTABNO"; 927 case DT_MIPS_UNREFEXTNO: 928 return "MIPS_UNREFEXTNO"; 929 case DT_MIPS_GOTSYM: 930 return "MIPS_GOTSYM"; 931 case DT_MIPS_HIPAGENO: 932 return "MIPS_HIPAGENO"; 933 case DT_MIPS_RLD_MAP: 934 return "MIPS_RLD_MAP"; 935 case DT_MIPS_DELTA_CLASS: 936 return "MIPS_DELTA_CLASS"; 937 case DT_MIPS_DELTA_CLASS_NO: 938 return "MIPS_DELTA_CLASS_NO"; 939 case DT_MIPS_DELTA_INSTANCE: 940 return "MIPS_DELTA_INSTANCE"; 941 case DT_MIPS_DELTA_INSTANCE_NO: 942 return "MIPS_DELTA_INSTANCE_NO"; 943 case DT_MIPS_DELTA_RELOC: 944 return "MIPS_DELTA_RELOC"; 945 case DT_MIPS_DELTA_RELOC_NO: 946 return "MIPS_DELTA_RELOC_NO"; 947 case DT_MIPS_DELTA_SYM: 948 return "MIPS_DELTA_SYM"; 949 case DT_MIPS_DELTA_SYM_NO: 950 return "MIPS_DELTA_SYM_NO"; 951 case DT_MIPS_DELTA_CLASSSYM: 952 return "MIPS_DELTA_CLASSSYM"; 953 case DT_MIPS_DELTA_CLASSSYM_NO: 954 return "MIPS_DELTA_CLASSSYM_NO"; 955 case DT_MIPS_CXX_FLAGS: 956 return "MIPS_CXX_FLAGS"; 957 case DT_MIPS_PIXIE_INIT: 958 return "MIPS_PIXIE_INIT"; 959 case DT_MIPS_SYMBOL_LIB: 960 return "MIPS_SYMBOL_LIB"; 961 case DT_MIPS_LOCALPAGE_GOTIDX: 962 return "MIPS_LOCALPAGE_GOTIDX"; 963 case DT_MIPS_LOCAL_GOTIDX: 964 return "MIPS_LOCAL_GOTIDX"; 965 case DT_MIPS_HIDDEN_GOTIDX: 966 return "MIPS_HIDDEN_GOTIDX"; 967 case DT_MIPS_PROTECTED_GOTIDX: 968 return "MIPS_PROTECTED_GOTIDX"; 969 case DT_MIPS_OPTIONS: 970 return "MIPS_OPTIONS"; 971 case DT_MIPS_INTERFACE: 972 return "MIPS_INTERFACE"; 973 case DT_MIPS_DYNSTR_ALIGN: 974 return "MIPS_DYNSTR_ALIGN"; 975 case DT_MIPS_INTERFACE_SIZE: 976 return "MIPS_INTERFACE_SIZE"; 977 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 978 return "MIPS_RLD_TEXT_RESOLVE_ADDR"; 979 case DT_MIPS_PERF_SUFFIX: 980 return "MIPS_PERF_SUFFIX"; 981 case DT_MIPS_COMPACT_SIZE: 982 return "MIPS_COMPACT_SIZE"; 983 case DT_MIPS_GP_VALUE: 984 return "MIPS_GP_VALUE"; 985 case DT_MIPS_AUX_DYNAMIC: 986 return "MIPS_AUX_DYNAMIC"; 987 case DT_MIPS_PLTGOT: 988 return "MIPS_PLTGOT"; 989 case DT_MIPS_RLD_OBJ_UPDATE: 990 return "MIPS_RLD_OBJ_UPDATE"; 991 case DT_MIPS_RWPLT: 992 return "MIPS_RWPLT"; 993 default: 994 break; 995 } 996 break; 997 case EM_SPARC: 998 case EM_SPARC32PLUS: 999 case EM_SPARCV9: 1000 switch (dtype) { 1001 case DT_SPARC_REGISTER: 1002 return "DT_SPARC_REGISTER"; 1003 default: 1004 break; 1005 } 1006 break; 1007 default: 1008 break; 1009 } 1010 } 1011 1012 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype); 1013 return (s_dtype); 1014 } 1015 1016 static const char * 1017 st_bind(unsigned int sbind) 1018 { 1019 static char s_sbind[32]; 1020 1021 switch (sbind) { 1022 case STB_LOCAL: return "LOCAL"; 1023 case STB_GLOBAL: return "GLOBAL"; 1024 case STB_WEAK: return "WEAK"; 1025 case STB_GNU_UNIQUE: return "UNIQUE"; 1026 default: 1027 if (sbind >= STB_LOOS && sbind <= STB_HIOS) 1028 return "OS"; 1029 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC) 1030 return "PROC"; 1031 else 1032 snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>", 1033 sbind); 1034 return (s_sbind); 1035 } 1036 } 1037 1038 static const char * 1039 st_type(unsigned int mach, unsigned int os, unsigned int stype) 1040 { 1041 static char s_stype[32]; 1042 1043 switch (stype) { 1044 case STT_NOTYPE: return "NOTYPE"; 1045 case STT_OBJECT: return "OBJECT"; 1046 case STT_FUNC: return "FUNC"; 1047 case STT_SECTION: return "SECTION"; 1048 case STT_FILE: return "FILE"; 1049 case STT_COMMON: return "COMMON"; 1050 case STT_TLS: return "TLS"; 1051 default: 1052 if (stype >= STT_LOOS && stype <= STT_HIOS) { 1053 if ((os == ELFOSABI_GNU || os == ELFOSABI_FREEBSD) && 1054 stype == STT_GNU_IFUNC) 1055 return "IFUNC"; 1056 snprintf(s_stype, sizeof(s_stype), "OS+%#x", 1057 stype - STT_LOOS); 1058 } else if (stype >= STT_LOPROC && stype <= STT_HIPROC) { 1059 if (mach == EM_SPARCV9 && stype == STT_SPARC_REGISTER) 1060 return "REGISTER"; 1061 snprintf(s_stype, sizeof(s_stype), "PROC+%#x", 1062 stype - STT_LOPROC); 1063 } else 1064 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 1065 stype); 1066 return (s_stype); 1067 } 1068 } 1069 1070 static const char * 1071 st_vis(unsigned int svis) 1072 { 1073 static char s_svis[32]; 1074 1075 switch(svis) { 1076 case STV_DEFAULT: return "DEFAULT"; 1077 case STV_INTERNAL: return "INTERNAL"; 1078 case STV_HIDDEN: return "HIDDEN"; 1079 case STV_PROTECTED: return "PROTECTED"; 1080 default: 1081 snprintf(s_svis, sizeof(s_svis), "<unknown: %#x>", svis); 1082 return (s_svis); 1083 } 1084 } 1085 1086 static const char * 1087 st_shndx(unsigned int shndx) 1088 { 1089 static char s_shndx[32]; 1090 1091 switch (shndx) { 1092 case SHN_UNDEF: return "UND"; 1093 case SHN_ABS: return "ABS"; 1094 case SHN_COMMON: return "COM"; 1095 default: 1096 if (shndx >= SHN_LOPROC && shndx <= SHN_HIPROC) 1097 return "PRC"; 1098 else if (shndx >= SHN_LOOS && shndx <= SHN_HIOS) 1099 return "OS"; 1100 else 1101 snprintf(s_shndx, sizeof(s_shndx), "%u", shndx); 1102 return (s_shndx); 1103 } 1104 } 1105 1106 static struct { 1107 const char *ln; 1108 char sn; 1109 int value; 1110 } section_flag[] = { 1111 {"WRITE", 'W', SHF_WRITE}, 1112 {"ALLOC", 'A', SHF_ALLOC}, 1113 {"EXEC", 'X', SHF_EXECINSTR}, 1114 {"MERGE", 'M', SHF_MERGE}, 1115 {"STRINGS", 'S', SHF_STRINGS}, 1116 {"INFO LINK", 'I', SHF_INFO_LINK}, 1117 {"OS NONCONF", 'O', SHF_OS_NONCONFORMING}, 1118 {"GROUP", 'G', SHF_GROUP}, 1119 {"TLS", 'T', SHF_TLS}, 1120 {"COMPRESSED", 'C', SHF_COMPRESSED}, 1121 {NULL, 0, 0} 1122 }; 1123 1124 static const char * 1125 note_type(const char *name, unsigned int et, unsigned int nt) 1126 { 1127 if ((strcmp(name, "CORE") == 0 || strcmp(name, "LINUX") == 0) && 1128 et == ET_CORE) 1129 return note_type_linux_core(nt); 1130 else if (strcmp(name, "FreeBSD") == 0) 1131 if (et == ET_CORE) 1132 return note_type_freebsd_core(nt); 1133 else 1134 return note_type_freebsd(nt); 1135 else if (strcmp(name, "GNU") == 0 && et != ET_CORE) 1136 return note_type_gnu(nt); 1137 else if (strcmp(name, "NetBSD") == 0 && et != ET_CORE) 1138 return note_type_netbsd(nt); 1139 else if (strcmp(name, "OpenBSD") == 0 && et != ET_CORE) 1140 return note_type_openbsd(nt); 1141 else if (strcmp(name, "Xen") == 0 && et != ET_CORE) 1142 return note_type_xen(nt); 1143 return note_type_unknown(nt); 1144 } 1145 1146 static const char * 1147 note_type_freebsd(unsigned int nt) 1148 { 1149 switch (nt) { 1150 case 1: return "NT_FREEBSD_ABI_TAG"; 1151 case 2: return "NT_FREEBSD_NOINIT_TAG"; 1152 case 3: return "NT_FREEBSD_ARCH_TAG"; 1153 case 4: return "NT_FREEBSD_FEATURE_CTL"; 1154 default: return (note_type_unknown(nt)); 1155 } 1156 } 1157 1158 static const char * 1159 note_type_freebsd_core(unsigned int nt) 1160 { 1161 switch (nt) { 1162 case 1: return "NT_PRSTATUS"; 1163 case 2: return "NT_FPREGSET"; 1164 case 3: return "NT_PRPSINFO"; 1165 case 7: return "NT_THRMISC"; 1166 case 8: return "NT_PROCSTAT_PROC"; 1167 case 9: return "NT_PROCSTAT_FILES"; 1168 case 10: return "NT_PROCSTAT_VMMAP"; 1169 case 11: return "NT_PROCSTAT_GROUPS"; 1170 case 12: return "NT_PROCSTAT_UMASK"; 1171 case 13: return "NT_PROCSTAT_RLIMIT"; 1172 case 14: return "NT_PROCSTAT_OSREL"; 1173 case 15: return "NT_PROCSTAT_PSSTRINGS"; 1174 case 16: return "NT_PROCSTAT_AUXV"; 1175 case 17: return "NT_PTLWPINFO"; 1176 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1177 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1178 default: return (note_type_unknown(nt)); 1179 } 1180 } 1181 1182 static const char * 1183 note_type_linux_core(unsigned int nt) 1184 { 1185 switch (nt) { 1186 case 1: return "NT_PRSTATUS (Process status)"; 1187 case 2: return "NT_FPREGSET (Floating point information)"; 1188 case 3: return "NT_PRPSINFO (Process information)"; 1189 case 4: return "NT_TASKSTRUCT (Task structure)"; 1190 case 6: return "NT_AUXV (Auxiliary vector)"; 1191 case 10: return "NT_PSTATUS (Linux process status)"; 1192 case 12: return "NT_FPREGS (Linux floating point regset)"; 1193 case 13: return "NT_PSINFO (Linux process information)"; 1194 case 16: return "NT_LWPSTATUS (Linux lwpstatus_t type)"; 1195 case 17: return "NT_LWPSINFO (Linux lwpinfo_t type)"; 1196 case 18: return "NT_WIN32PSTATUS (win32_pstatus structure)"; 1197 case 0x100: return "NT_PPC_VMX (ppc Altivec registers)"; 1198 case 0x102: return "NT_PPC_VSX (ppc VSX registers)"; 1199 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1200 case 0x300: return "NT_S390_HIGH_GPRS (s390 upper register halves)"; 1201 case 0x301: return "NT_S390_TIMER (s390 timer register)"; 1202 case 0x302: return "NT_S390_TODCMP (s390 TOD comparator register)"; 1203 case 0x303: return "NT_S390_TODPREG (s390 TOD programmable register)"; 1204 case 0x304: return "NT_S390_CTRS (s390 control registers)"; 1205 case 0x305: return "NT_S390_PREFIX (s390 prefix register)"; 1206 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1207 case 0x46494c45UL: return "NT_FILE (mapped files)"; 1208 case 0x46E62B7FUL: return "NT_PRXFPREG (Linux user_xfpregs structure)"; 1209 case 0x53494749UL: return "NT_SIGINFO (siginfo_t data)"; 1210 default: return (note_type_unknown(nt)); 1211 } 1212 } 1213 1214 static const char * 1215 note_type_gnu(unsigned int nt) 1216 { 1217 switch (nt) { 1218 case 1: return "NT_GNU_ABI_TAG"; 1219 case 2: return "NT_GNU_HWCAP (Hardware capabilities)"; 1220 case 3: return "NT_GNU_BUILD_ID (Build id set by ld(1))"; 1221 case 4: return "NT_GNU_GOLD_VERSION (GNU gold version)"; 1222 case 5: return "NT_GNU_PROPERTY_TYPE_0"; 1223 default: return (note_type_unknown(nt)); 1224 } 1225 } 1226 1227 static const char * 1228 note_type_netbsd(unsigned int nt) 1229 { 1230 switch (nt) { 1231 case 1: return "NT_NETBSD_IDENT"; 1232 default: return (note_type_unknown(nt)); 1233 } 1234 } 1235 1236 static const char * 1237 note_type_openbsd(unsigned int nt) 1238 { 1239 switch (nt) { 1240 case 1: return "NT_OPENBSD_IDENT"; 1241 default: return (note_type_unknown(nt)); 1242 } 1243 } 1244 1245 static const char * 1246 note_type_unknown(unsigned int nt) 1247 { 1248 static char s_nt[32]; 1249 1250 snprintf(s_nt, sizeof(s_nt), 1251 nt >= 0x100 ? "<unknown: 0x%x>" : "<unknown: %u>", nt); 1252 return (s_nt); 1253 } 1254 1255 static const char * 1256 note_type_xen(unsigned int nt) 1257 { 1258 switch (nt) { 1259 case 0: return "XEN_ELFNOTE_INFO"; 1260 case 1: return "XEN_ELFNOTE_ENTRY"; 1261 case 2: return "XEN_ELFNOTE_HYPERCALL_PAGE"; 1262 case 3: return "XEN_ELFNOTE_VIRT_BASE"; 1263 case 4: return "XEN_ELFNOTE_PADDR_OFFSET"; 1264 case 5: return "XEN_ELFNOTE_XEN_VERSION"; 1265 case 6: return "XEN_ELFNOTE_GUEST_OS"; 1266 case 7: return "XEN_ELFNOTE_GUEST_VERSION"; 1267 case 8: return "XEN_ELFNOTE_LOADER"; 1268 case 9: return "XEN_ELFNOTE_PAE_MODE"; 1269 case 10: return "XEN_ELFNOTE_FEATURES"; 1270 case 11: return "XEN_ELFNOTE_BSD_SYMTAB"; 1271 case 12: return "XEN_ELFNOTE_HV_START_LOW"; 1272 case 13: return "XEN_ELFNOTE_L1_MFN_VALID"; 1273 case 14: return "XEN_ELFNOTE_SUSPEND_CANCEL"; 1274 case 15: return "XEN_ELFNOTE_INIT_P2M"; 1275 case 16: return "XEN_ELFNOTE_MOD_START_PFN"; 1276 case 17: return "XEN_ELFNOTE_SUPPORTED_FEATURES"; 1277 default: return (note_type_unknown(nt)); 1278 } 1279 } 1280 1281 static struct { 1282 const char *name; 1283 int value; 1284 } l_flag[] = { 1285 {"EXACT_MATCH", LL_EXACT_MATCH}, 1286 {"IGNORE_INT_VER", LL_IGNORE_INT_VER}, 1287 {"REQUIRE_MINOR", LL_REQUIRE_MINOR}, 1288 {"EXPORTS", LL_EXPORTS}, 1289 {"DELAY_LOAD", LL_DELAY_LOAD}, 1290 {"DELTA", LL_DELTA}, 1291 {NULL, 0} 1292 }; 1293 1294 static struct mips_option mips_exceptions_option[] = { 1295 {OEX_PAGE0, "PAGE0"}, 1296 {OEX_SMM, "SMM"}, 1297 {OEX_PRECISEFP, "PRECISEFP"}, 1298 {OEX_DISMISS, "DISMISS"}, 1299 {0, NULL} 1300 }; 1301 1302 static struct mips_option mips_pad_option[] = { 1303 {OPAD_PREFIX, "PREFIX"}, 1304 {OPAD_POSTFIX, "POSTFIX"}, 1305 {OPAD_SYMBOL, "SYMBOL"}, 1306 {0, NULL} 1307 }; 1308 1309 static struct mips_option mips_hwpatch_option[] = { 1310 {OHW_R4KEOP, "R4KEOP"}, 1311 {OHW_R8KPFETCH, "R8KPFETCH"}, 1312 {OHW_R5KEOP, "R5KEOP"}, 1313 {OHW_R5KCVTL, "R5KCVTL"}, 1314 {0, NULL} 1315 }; 1316 1317 static struct mips_option mips_hwa_option[] = { 1318 {OHWA0_R4KEOP_CHECKED, "R4KEOP_CHECKED"}, 1319 {OHWA0_R4KEOP_CLEAN, "R4KEOP_CLEAN"}, 1320 {0, NULL} 1321 }; 1322 1323 static struct mips_option mips_hwo_option[] = { 1324 {OHWO0_FIXADE, "FIXADE"}, 1325 {0, NULL} 1326 }; 1327 1328 static const char * 1329 option_kind(uint8_t kind) 1330 { 1331 static char s_kind[32]; 1332 1333 switch (kind) { 1334 case ODK_NULL: return "NULL"; 1335 case ODK_REGINFO: return "REGINFO"; 1336 case ODK_EXCEPTIONS: return "EXCEPTIONS"; 1337 case ODK_PAD: return "PAD"; 1338 case ODK_HWPATCH: return "HWPATCH"; 1339 case ODK_FILL: return "FILL"; 1340 case ODK_TAGS: return "TAGS"; 1341 case ODK_HWAND: return "HWAND"; 1342 case ODK_HWOR: return "HWOR"; 1343 case ODK_GP_GROUP: return "GP_GROUP"; 1344 case ODK_IDENT: return "IDENT"; 1345 default: 1346 snprintf(s_kind, sizeof(s_kind), "<unknown: %u>", kind); 1347 return (s_kind); 1348 } 1349 } 1350 1351 static const char * 1352 top_tag(unsigned int tag) 1353 { 1354 static char s_top_tag[32]; 1355 1356 switch (tag) { 1357 case 1: return "File Attributes"; 1358 case 2: return "Section Attributes"; 1359 case 3: return "Symbol Attributes"; 1360 default: 1361 snprintf(s_top_tag, sizeof(s_top_tag), "Unknown tag: %u", tag); 1362 return (s_top_tag); 1363 } 1364 } 1365 1366 static const char * 1367 aeabi_cpu_arch(uint64_t arch) 1368 { 1369 static char s_cpu_arch[32]; 1370 1371 switch (arch) { 1372 case 0: return "Pre-V4"; 1373 case 1: return "ARM v4"; 1374 case 2: return "ARM v4T"; 1375 case 3: return "ARM v5T"; 1376 case 4: return "ARM v5TE"; 1377 case 5: return "ARM v5TEJ"; 1378 case 6: return "ARM v6"; 1379 case 7: return "ARM v6KZ"; 1380 case 8: return "ARM v6T2"; 1381 case 9: return "ARM v6K"; 1382 case 10: return "ARM v7"; 1383 case 11: return "ARM v6-M"; 1384 case 12: return "ARM v6S-M"; 1385 case 13: return "ARM v7E-M"; 1386 default: 1387 snprintf(s_cpu_arch, sizeof(s_cpu_arch), 1388 "Unknown (%ju)", (uintmax_t) arch); 1389 return (s_cpu_arch); 1390 } 1391 } 1392 1393 static const char * 1394 aeabi_cpu_arch_profile(uint64_t pf) 1395 { 1396 static char s_arch_profile[32]; 1397 1398 switch (pf) { 1399 case 0: 1400 return "Not applicable"; 1401 case 0x41: /* 'A' */ 1402 return "Application Profile"; 1403 case 0x52: /* 'R' */ 1404 return "Real-Time Profile"; 1405 case 0x4D: /* 'M' */ 1406 return "Microcontroller Profile"; 1407 case 0x53: /* 'S' */ 1408 return "Application or Real-Time Profile"; 1409 default: 1410 snprintf(s_arch_profile, sizeof(s_arch_profile), 1411 "Unknown (%ju)\n", (uintmax_t) pf); 1412 return (s_arch_profile); 1413 } 1414 } 1415 1416 static const char * 1417 aeabi_arm_isa(uint64_t ai) 1418 { 1419 static char s_ai[32]; 1420 1421 switch (ai) { 1422 case 0: return "No"; 1423 case 1: return "Yes"; 1424 default: 1425 snprintf(s_ai, sizeof(s_ai), "Unknown (%ju)\n", 1426 (uintmax_t) ai); 1427 return (s_ai); 1428 } 1429 } 1430 1431 static const char * 1432 aeabi_thumb_isa(uint64_t ti) 1433 { 1434 static char s_ti[32]; 1435 1436 switch (ti) { 1437 case 0: return "No"; 1438 case 1: return "16-bit Thumb"; 1439 case 2: return "32-bit Thumb"; 1440 default: 1441 snprintf(s_ti, sizeof(s_ti), "Unknown (%ju)\n", 1442 (uintmax_t) ti); 1443 return (s_ti); 1444 } 1445 } 1446 1447 static const char * 1448 aeabi_fp_arch(uint64_t fp) 1449 { 1450 static char s_fp_arch[32]; 1451 1452 switch (fp) { 1453 case 0: return "No"; 1454 case 1: return "VFPv1"; 1455 case 2: return "VFPv2"; 1456 case 3: return "VFPv3"; 1457 case 4: return "VFPv3-D16"; 1458 case 5: return "VFPv4"; 1459 case 6: return "VFPv4-D16"; 1460 default: 1461 snprintf(s_fp_arch, sizeof(s_fp_arch), "Unknown (%ju)", 1462 (uintmax_t) fp); 1463 return (s_fp_arch); 1464 } 1465 } 1466 1467 static const char * 1468 aeabi_wmmx_arch(uint64_t wmmx) 1469 { 1470 static char s_wmmx[32]; 1471 1472 switch (wmmx) { 1473 case 0: return "No"; 1474 case 1: return "WMMXv1"; 1475 case 2: return "WMMXv2"; 1476 default: 1477 snprintf(s_wmmx, sizeof(s_wmmx), "Unknown (%ju)", 1478 (uintmax_t) wmmx); 1479 return (s_wmmx); 1480 } 1481 } 1482 1483 static const char * 1484 aeabi_adv_simd_arch(uint64_t simd) 1485 { 1486 static char s_simd[32]; 1487 1488 switch (simd) { 1489 case 0: return "No"; 1490 case 1: return "NEONv1"; 1491 case 2: return "NEONv2"; 1492 default: 1493 snprintf(s_simd, sizeof(s_simd), "Unknown (%ju)", 1494 (uintmax_t) simd); 1495 return (s_simd); 1496 } 1497 } 1498 1499 static const char * 1500 aeabi_pcs_config(uint64_t pcs) 1501 { 1502 static char s_pcs[32]; 1503 1504 switch (pcs) { 1505 case 0: return "None"; 1506 case 1: return "Bare platform"; 1507 case 2: return "Linux"; 1508 case 3: return "Linux DSO"; 1509 case 4: return "Palm OS 2004"; 1510 case 5: return "Palm OS (future)"; 1511 case 6: return "Symbian OS 2004"; 1512 case 7: return "Symbian OS (future)"; 1513 default: 1514 snprintf(s_pcs, sizeof(s_pcs), "Unknown (%ju)", 1515 (uintmax_t) pcs); 1516 return (s_pcs); 1517 } 1518 } 1519 1520 static const char * 1521 aeabi_pcs_r9(uint64_t r9) 1522 { 1523 static char s_r9[32]; 1524 1525 switch (r9) { 1526 case 0: return "V6"; 1527 case 1: return "SB"; 1528 case 2: return "TLS pointer"; 1529 case 3: return "Unused"; 1530 default: 1531 snprintf(s_r9, sizeof(s_r9), "Unknown (%ju)", (uintmax_t) r9); 1532 return (s_r9); 1533 } 1534 } 1535 1536 static const char * 1537 aeabi_pcs_rw(uint64_t rw) 1538 { 1539 static char s_rw[32]; 1540 1541 switch (rw) { 1542 case 0: return "Absolute"; 1543 case 1: return "PC-relative"; 1544 case 2: return "SB-relative"; 1545 case 3: return "None"; 1546 default: 1547 snprintf(s_rw, sizeof(s_rw), "Unknown (%ju)", (uintmax_t) rw); 1548 return (s_rw); 1549 } 1550 } 1551 1552 static const char * 1553 aeabi_pcs_ro(uint64_t ro) 1554 { 1555 static char s_ro[32]; 1556 1557 switch (ro) { 1558 case 0: return "Absolute"; 1559 case 1: return "PC-relative"; 1560 case 2: return "None"; 1561 default: 1562 snprintf(s_ro, sizeof(s_ro), "Unknown (%ju)", (uintmax_t) ro); 1563 return (s_ro); 1564 } 1565 } 1566 1567 static const char * 1568 aeabi_pcs_got(uint64_t got) 1569 { 1570 static char s_got[32]; 1571 1572 switch (got) { 1573 case 0: return "None"; 1574 case 1: return "direct"; 1575 case 2: return "indirect via GOT"; 1576 default: 1577 snprintf(s_got, sizeof(s_got), "Unknown (%ju)", 1578 (uintmax_t) got); 1579 return (s_got); 1580 } 1581 } 1582 1583 static const char * 1584 aeabi_pcs_wchar_t(uint64_t wt) 1585 { 1586 static char s_wt[32]; 1587 1588 switch (wt) { 1589 case 0: return "None"; 1590 case 2: return "wchar_t size 2"; 1591 case 4: return "wchar_t size 4"; 1592 default: 1593 snprintf(s_wt, sizeof(s_wt), "Unknown (%ju)", (uintmax_t) wt); 1594 return (s_wt); 1595 } 1596 } 1597 1598 static const char * 1599 aeabi_enum_size(uint64_t es) 1600 { 1601 static char s_es[32]; 1602 1603 switch (es) { 1604 case 0: return "None"; 1605 case 1: return "smallest"; 1606 case 2: return "32-bit"; 1607 case 3: return "visible 32-bit"; 1608 default: 1609 snprintf(s_es, sizeof(s_es), "Unknown (%ju)", (uintmax_t) es); 1610 return (s_es); 1611 } 1612 } 1613 1614 static const char * 1615 aeabi_align_needed(uint64_t an) 1616 { 1617 static char s_align_n[64]; 1618 1619 switch (an) { 1620 case 0: return "No"; 1621 case 1: return "8-byte align"; 1622 case 2: return "4-byte align"; 1623 case 3: return "Reserved"; 1624 default: 1625 if (an >= 4 && an <= 12) 1626 snprintf(s_align_n, sizeof(s_align_n), "8-byte align" 1627 " and up to 2^%ju-byte extended align", 1628 (uintmax_t) an); 1629 else 1630 snprintf(s_align_n, sizeof(s_align_n), "Unknown (%ju)", 1631 (uintmax_t) an); 1632 return (s_align_n); 1633 } 1634 } 1635 1636 static const char * 1637 aeabi_align_preserved(uint64_t ap) 1638 { 1639 static char s_align_p[128]; 1640 1641 switch (ap) { 1642 case 0: return "No"; 1643 case 1: return "8-byte align"; 1644 case 2: return "8-byte align and SP % 8 == 0"; 1645 case 3: return "Reserved"; 1646 default: 1647 if (ap >= 4 && ap <= 12) 1648 snprintf(s_align_p, sizeof(s_align_p), "8-byte align" 1649 " and SP %% 8 == 0 and up to 2^%ju-byte extended" 1650 " align", (uintmax_t) ap); 1651 else 1652 snprintf(s_align_p, sizeof(s_align_p), "Unknown (%ju)", 1653 (uintmax_t) ap); 1654 return (s_align_p); 1655 } 1656 } 1657 1658 static const char * 1659 aeabi_fp_rounding(uint64_t fr) 1660 { 1661 static char s_fp_r[32]; 1662 1663 switch (fr) { 1664 case 0: return "Unused"; 1665 case 1: return "Needed"; 1666 default: 1667 snprintf(s_fp_r, sizeof(s_fp_r), "Unknown (%ju)", 1668 (uintmax_t) fr); 1669 return (s_fp_r); 1670 } 1671 } 1672 1673 static const char * 1674 aeabi_fp_denormal(uint64_t fd) 1675 { 1676 static char s_fp_d[32]; 1677 1678 switch (fd) { 1679 case 0: return "Unused"; 1680 case 1: return "Needed"; 1681 case 2: return "Sign Only"; 1682 default: 1683 snprintf(s_fp_d, sizeof(s_fp_d), "Unknown (%ju)", 1684 (uintmax_t) fd); 1685 return (s_fp_d); 1686 } 1687 } 1688 1689 static const char * 1690 aeabi_fp_exceptions(uint64_t fe) 1691 { 1692 static char s_fp_e[32]; 1693 1694 switch (fe) { 1695 case 0: return "Unused"; 1696 case 1: return "Needed"; 1697 default: 1698 snprintf(s_fp_e, sizeof(s_fp_e), "Unknown (%ju)", 1699 (uintmax_t) fe); 1700 return (s_fp_e); 1701 } 1702 } 1703 1704 static const char * 1705 aeabi_fp_user_exceptions(uint64_t fu) 1706 { 1707 static char s_fp_u[32]; 1708 1709 switch (fu) { 1710 case 0: return "Unused"; 1711 case 1: return "Needed"; 1712 default: 1713 snprintf(s_fp_u, sizeof(s_fp_u), "Unknown (%ju)", 1714 (uintmax_t) fu); 1715 return (s_fp_u); 1716 } 1717 } 1718 1719 static const char * 1720 aeabi_fp_number_model(uint64_t fn) 1721 { 1722 static char s_fp_n[32]; 1723 1724 switch (fn) { 1725 case 0: return "Unused"; 1726 case 1: return "IEEE 754 normal"; 1727 case 2: return "RTABI"; 1728 case 3: return "IEEE 754"; 1729 default: 1730 snprintf(s_fp_n, sizeof(s_fp_n), "Unknown (%ju)", 1731 (uintmax_t) fn); 1732 return (s_fp_n); 1733 } 1734 } 1735 1736 static const char * 1737 aeabi_fp_16bit_format(uint64_t fp16) 1738 { 1739 static char s_fp_16[64]; 1740 1741 switch (fp16) { 1742 case 0: return "None"; 1743 case 1: return "IEEE 754"; 1744 case 2: return "VFPv3/Advanced SIMD (alternative format)"; 1745 default: 1746 snprintf(s_fp_16, sizeof(s_fp_16), "Unknown (%ju)", 1747 (uintmax_t) fp16); 1748 return (s_fp_16); 1749 } 1750 } 1751 1752 static const char * 1753 aeabi_mpext(uint64_t mp) 1754 { 1755 static char s_mp[32]; 1756 1757 switch (mp) { 1758 case 0: return "Not allowed"; 1759 case 1: return "Allowed"; 1760 default: 1761 snprintf(s_mp, sizeof(s_mp), "Unknown (%ju)", 1762 (uintmax_t) mp); 1763 return (s_mp); 1764 } 1765 } 1766 1767 static const char * 1768 aeabi_div(uint64_t du) 1769 { 1770 static char s_du[32]; 1771 1772 switch (du) { 1773 case 0: return "Yes (V7-R/V7-M)"; 1774 case 1: return "No"; 1775 case 2: return "Yes (V7-A)"; 1776 default: 1777 snprintf(s_du, sizeof(s_du), "Unknown (%ju)", 1778 (uintmax_t) du); 1779 return (s_du); 1780 } 1781 } 1782 1783 static const char * 1784 aeabi_t2ee(uint64_t t2ee) 1785 { 1786 static char s_t2ee[32]; 1787 1788 switch (t2ee) { 1789 case 0: return "Not allowed"; 1790 case 1: return "Allowed"; 1791 default: 1792 snprintf(s_t2ee, sizeof(s_t2ee), "Unknown(%ju)", 1793 (uintmax_t) t2ee); 1794 return (s_t2ee); 1795 } 1796 1797 } 1798 1799 static const char * 1800 aeabi_hardfp(uint64_t hfp) 1801 { 1802 static char s_hfp[32]; 1803 1804 switch (hfp) { 1805 case 0: return "Tag_FP_arch"; 1806 case 1: return "only SP"; 1807 case 2: return "only DP"; 1808 case 3: return "both SP and DP"; 1809 default: 1810 snprintf(s_hfp, sizeof(s_hfp), "Unknown (%ju)", 1811 (uintmax_t) hfp); 1812 return (s_hfp); 1813 } 1814 } 1815 1816 static const char * 1817 aeabi_vfp_args(uint64_t va) 1818 { 1819 static char s_va[32]; 1820 1821 switch (va) { 1822 case 0: return "AAPCS (base variant)"; 1823 case 1: return "AAPCS (VFP variant)"; 1824 case 2: return "toolchain-specific"; 1825 default: 1826 snprintf(s_va, sizeof(s_va), "Unknown (%ju)", (uintmax_t) va); 1827 return (s_va); 1828 } 1829 } 1830 1831 static const char * 1832 aeabi_wmmx_args(uint64_t wa) 1833 { 1834 static char s_wa[32]; 1835 1836 switch (wa) { 1837 case 0: return "AAPCS (base variant)"; 1838 case 1: return "Intel WMMX"; 1839 case 2: return "toolchain-specific"; 1840 default: 1841 snprintf(s_wa, sizeof(s_wa), "Unknown(%ju)", (uintmax_t) wa); 1842 return (s_wa); 1843 } 1844 } 1845 1846 static const char * 1847 aeabi_unaligned_access(uint64_t ua) 1848 { 1849 static char s_ua[32]; 1850 1851 switch (ua) { 1852 case 0: return "Not allowed"; 1853 case 1: return "Allowed"; 1854 default: 1855 snprintf(s_ua, sizeof(s_ua), "Unknown(%ju)", (uintmax_t) ua); 1856 return (s_ua); 1857 } 1858 } 1859 1860 static const char * 1861 aeabi_fp_hpext(uint64_t fh) 1862 { 1863 static char s_fh[32]; 1864 1865 switch (fh) { 1866 case 0: return "Not allowed"; 1867 case 1: return "Allowed"; 1868 default: 1869 snprintf(s_fh, sizeof(s_fh), "Unknown(%ju)", (uintmax_t) fh); 1870 return (s_fh); 1871 } 1872 } 1873 1874 static const char * 1875 aeabi_optm_goal(uint64_t og) 1876 { 1877 static char s_og[32]; 1878 1879 switch (og) { 1880 case 0: return "None"; 1881 case 1: return "Speed"; 1882 case 2: return "Speed aggressive"; 1883 case 3: return "Space"; 1884 case 4: return "Space aggressive"; 1885 case 5: return "Debugging"; 1886 case 6: return "Best Debugging"; 1887 default: 1888 snprintf(s_og, sizeof(s_og), "Unknown(%ju)", (uintmax_t) og); 1889 return (s_og); 1890 } 1891 } 1892 1893 static const char * 1894 aeabi_fp_optm_goal(uint64_t fog) 1895 { 1896 static char s_fog[32]; 1897 1898 switch (fog) { 1899 case 0: return "None"; 1900 case 1: return "Speed"; 1901 case 2: return "Speed aggressive"; 1902 case 3: return "Space"; 1903 case 4: return "Space aggressive"; 1904 case 5: return "Accurary"; 1905 case 6: return "Best Accurary"; 1906 default: 1907 snprintf(s_fog, sizeof(s_fog), "Unknown(%ju)", 1908 (uintmax_t) fog); 1909 return (s_fog); 1910 } 1911 } 1912 1913 static const char * 1914 aeabi_virtual(uint64_t vt) 1915 { 1916 static char s_virtual[64]; 1917 1918 switch (vt) { 1919 case 0: return "No"; 1920 case 1: return "TrustZone"; 1921 case 2: return "Virtualization extension"; 1922 case 3: return "TrustZone and virtualization extension"; 1923 default: 1924 snprintf(s_virtual, sizeof(s_virtual), "Unknown(%ju)", 1925 (uintmax_t) vt); 1926 return (s_virtual); 1927 } 1928 } 1929 1930 static struct { 1931 uint64_t tag; 1932 const char *s_tag; 1933 const char *(*get_desc)(uint64_t val); 1934 } aeabi_tags[] = { 1935 {4, "Tag_CPU_raw_name", NULL}, 1936 {5, "Tag_CPU_name", NULL}, 1937 {6, "Tag_CPU_arch", aeabi_cpu_arch}, 1938 {7, "Tag_CPU_arch_profile", aeabi_cpu_arch_profile}, 1939 {8, "Tag_ARM_ISA_use", aeabi_arm_isa}, 1940 {9, "Tag_THUMB_ISA_use", aeabi_thumb_isa}, 1941 {10, "Tag_FP_arch", aeabi_fp_arch}, 1942 {11, "Tag_WMMX_arch", aeabi_wmmx_arch}, 1943 {12, "Tag_Advanced_SIMD_arch", aeabi_adv_simd_arch}, 1944 {13, "Tag_PCS_config", aeabi_pcs_config}, 1945 {14, "Tag_ABI_PCS_R9_use", aeabi_pcs_r9}, 1946 {15, "Tag_ABI_PCS_RW_data", aeabi_pcs_rw}, 1947 {16, "Tag_ABI_PCS_RO_data", aeabi_pcs_ro}, 1948 {17, "Tag_ABI_PCS_GOT_use", aeabi_pcs_got}, 1949 {18, "Tag_ABI_PCS_wchar_t", aeabi_pcs_wchar_t}, 1950 {19, "Tag_ABI_FP_rounding", aeabi_fp_rounding}, 1951 {20, "Tag_ABI_FP_denormal", aeabi_fp_denormal}, 1952 {21, "Tag_ABI_FP_exceptions", aeabi_fp_exceptions}, 1953 {22, "Tag_ABI_FP_user_exceptions", aeabi_fp_user_exceptions}, 1954 {23, "Tag_ABI_FP_number_model", aeabi_fp_number_model}, 1955 {24, "Tag_ABI_align_needed", aeabi_align_needed}, 1956 {25, "Tag_ABI_align_preserved", aeabi_align_preserved}, 1957 {26, "Tag_ABI_enum_size", aeabi_enum_size}, 1958 {27, "Tag_ABI_HardFP_use", aeabi_hardfp}, 1959 {28, "Tag_ABI_VFP_args", aeabi_vfp_args}, 1960 {29, "Tag_ABI_WMMX_args", aeabi_wmmx_args}, 1961 {30, "Tag_ABI_optimization_goals", aeabi_optm_goal}, 1962 {31, "Tag_ABI_FP_optimization_goals", aeabi_fp_optm_goal}, 1963 {32, "Tag_compatibility", NULL}, 1964 {34, "Tag_CPU_unaligned_access", aeabi_unaligned_access}, 1965 {36, "Tag_FP_HP_extension", aeabi_fp_hpext}, 1966 {38, "Tag_ABI_FP_16bit_format", aeabi_fp_16bit_format}, 1967 {42, "Tag_MPextension_use", aeabi_mpext}, 1968 {44, "Tag_DIV_use", aeabi_div}, 1969 {64, "Tag_nodefaults", NULL}, 1970 {65, "Tag_also_compatible_with", NULL}, 1971 {66, "Tag_T2EE_use", aeabi_t2ee}, 1972 {67, "Tag_conformance", NULL}, 1973 {68, "Tag_Virtualization_use", aeabi_virtual}, 1974 {70, "Tag_MPextension_use", aeabi_mpext}, 1975 }; 1976 1977 static const char * 1978 mips_abi_fp(uint64_t fp) 1979 { 1980 static char s_mips_abi_fp[64]; 1981 1982 switch (fp) { 1983 case 0: return "N/A"; 1984 case 1: return "Hard float (double precision)"; 1985 case 2: return "Hard float (single precision)"; 1986 case 3: return "Soft float"; 1987 case 4: return "64-bit float (-mips32r2 -mfp64)"; 1988 default: 1989 snprintf(s_mips_abi_fp, sizeof(s_mips_abi_fp), "Unknown(%ju)", 1990 (uintmax_t) fp); 1991 return (s_mips_abi_fp); 1992 } 1993 } 1994 1995 static const char * 1996 ppc_abi_fp(uint64_t fp) 1997 { 1998 static char s_ppc_abi_fp[64]; 1999 2000 switch (fp) { 2001 case 0: return "N/A"; 2002 case 1: return "Hard float (double precision)"; 2003 case 2: return "Soft float"; 2004 case 3: return "Hard float (single precision)"; 2005 default: 2006 snprintf(s_ppc_abi_fp, sizeof(s_ppc_abi_fp), "Unknown(%ju)", 2007 (uintmax_t) fp); 2008 return (s_ppc_abi_fp); 2009 } 2010 } 2011 2012 static const char * 2013 ppc_abi_vector(uint64_t vec) 2014 { 2015 static char s_vec[64]; 2016 2017 switch (vec) { 2018 case 0: return "N/A"; 2019 case 1: return "Generic purpose registers"; 2020 case 2: return "AltiVec registers"; 2021 case 3: return "SPE registers"; 2022 default: 2023 snprintf(s_vec, sizeof(s_vec), "Unknown(%ju)", (uintmax_t) vec); 2024 return (s_vec); 2025 } 2026 } 2027 2028 static const char * 2029 dwarf_reg(unsigned int mach, unsigned int reg) 2030 { 2031 2032 switch (mach) { 2033 case EM_386: 2034 case EM_IAMCU: 2035 switch (reg) { 2036 case 0: return "eax"; 2037 case 1: return "ecx"; 2038 case 2: return "edx"; 2039 case 3: return "ebx"; 2040 case 4: return "esp"; 2041 case 5: return "ebp"; 2042 case 6: return "esi"; 2043 case 7: return "edi"; 2044 case 8: return "eip"; 2045 case 9: return "eflags"; 2046 case 11: return "st0"; 2047 case 12: return "st1"; 2048 case 13: return "st2"; 2049 case 14: return "st3"; 2050 case 15: return "st4"; 2051 case 16: return "st5"; 2052 case 17: return "st6"; 2053 case 18: return "st7"; 2054 case 21: return "xmm0"; 2055 case 22: return "xmm1"; 2056 case 23: return "xmm2"; 2057 case 24: return "xmm3"; 2058 case 25: return "xmm4"; 2059 case 26: return "xmm5"; 2060 case 27: return "xmm6"; 2061 case 28: return "xmm7"; 2062 case 29: return "mm0"; 2063 case 30: return "mm1"; 2064 case 31: return "mm2"; 2065 case 32: return "mm3"; 2066 case 33: return "mm4"; 2067 case 34: return "mm5"; 2068 case 35: return "mm6"; 2069 case 36: return "mm7"; 2070 case 37: return "fcw"; 2071 case 38: return "fsw"; 2072 case 39: return "mxcsr"; 2073 case 40: return "es"; 2074 case 41: return "cs"; 2075 case 42: return "ss"; 2076 case 43: return "ds"; 2077 case 44: return "fs"; 2078 case 45: return "gs"; 2079 case 48: return "tr"; 2080 case 49: return "ldtr"; 2081 default: return (NULL); 2082 } 2083 case EM_X86_64: 2084 switch (reg) { 2085 case 0: return "rax"; 2086 case 1: return "rdx"; 2087 case 2: return "rcx"; 2088 case 3: return "rbx"; 2089 case 4: return "rsi"; 2090 case 5: return "rdi"; 2091 case 6: return "rbp"; 2092 case 7: return "rsp"; 2093 case 16: return "rip"; 2094 case 17: return "xmm0"; 2095 case 18: return "xmm1"; 2096 case 19: return "xmm2"; 2097 case 20: return "xmm3"; 2098 case 21: return "xmm4"; 2099 case 22: return "xmm5"; 2100 case 23: return "xmm6"; 2101 case 24: return "xmm7"; 2102 case 25: return "xmm8"; 2103 case 26: return "xmm9"; 2104 case 27: return "xmm10"; 2105 case 28: return "xmm11"; 2106 case 29: return "xmm12"; 2107 case 30: return "xmm13"; 2108 case 31: return "xmm14"; 2109 case 32: return "xmm15"; 2110 case 33: return "st0"; 2111 case 34: return "st1"; 2112 case 35: return "st2"; 2113 case 36: return "st3"; 2114 case 37: return "st4"; 2115 case 38: return "st5"; 2116 case 39: return "st6"; 2117 case 40: return "st7"; 2118 case 41: return "mm0"; 2119 case 42: return "mm1"; 2120 case 43: return "mm2"; 2121 case 44: return "mm3"; 2122 case 45: return "mm4"; 2123 case 46: return "mm5"; 2124 case 47: return "mm6"; 2125 case 48: return "mm7"; 2126 case 49: return "rflags"; 2127 case 50: return "es"; 2128 case 51: return "cs"; 2129 case 52: return "ss"; 2130 case 53: return "ds"; 2131 case 54: return "fs"; 2132 case 55: return "gs"; 2133 case 58: return "fs.base"; 2134 case 59: return "gs.base"; 2135 case 62: return "tr"; 2136 case 63: return "ldtr"; 2137 case 64: return "mxcsr"; 2138 case 65: return "fcw"; 2139 case 66: return "fsw"; 2140 default: return (NULL); 2141 } 2142 default: 2143 return (NULL); 2144 } 2145 } 2146 2147 static void 2148 dump_ehdr(struct readelf *re) 2149 { 2150 size_t phnum, shnum, shstrndx; 2151 int i; 2152 2153 printf("ELF Header:\n"); 2154 2155 /* e_ident[]. */ 2156 printf(" Magic: "); 2157 for (i = 0; i < EI_NIDENT; i++) 2158 printf("%.2x ", re->ehdr.e_ident[i]); 2159 putchar('\n'); 2160 2161 /* EI_CLASS. */ 2162 printf("%-37s%s\n", " Class:", elf_class(re->ehdr.e_ident[EI_CLASS])); 2163 2164 /* EI_DATA. */ 2165 printf("%-37s%s\n", " Data:", elf_endian(re->ehdr.e_ident[EI_DATA])); 2166 2167 /* EI_VERSION. */ 2168 printf("%-37s%d %s\n", " Version:", re->ehdr.e_ident[EI_VERSION], 2169 elf_ver(re->ehdr.e_ident[EI_VERSION])); 2170 2171 /* EI_OSABI. */ 2172 printf("%-37s%s\n", " OS/ABI:", elf_osabi(re->ehdr.e_ident[EI_OSABI])); 2173 2174 /* EI_ABIVERSION. */ 2175 printf("%-37s%d\n", " ABI Version:", re->ehdr.e_ident[EI_ABIVERSION]); 2176 2177 /* e_type. */ 2178 printf("%-37s%s\n", " Type:", elf_type(re->ehdr.e_type)); 2179 2180 /* e_machine. */ 2181 printf("%-37s%s\n", " Machine:", elf_machine(re->ehdr.e_machine)); 2182 2183 /* e_version. */ 2184 printf("%-37s%#x\n", " Version:", re->ehdr.e_version); 2185 2186 /* e_entry. */ 2187 printf("%-37s%#jx\n", " Entry point address:", 2188 (uintmax_t)re->ehdr.e_entry); 2189 2190 /* e_phoff. */ 2191 printf("%-37s%ju (bytes into file)\n", " Start of program headers:", 2192 (uintmax_t)re->ehdr.e_phoff); 2193 2194 /* e_shoff. */ 2195 printf("%-37s%ju (bytes into file)\n", " Start of section headers:", 2196 (uintmax_t)re->ehdr.e_shoff); 2197 2198 /* e_flags. */ 2199 printf("%-37s%#x", " Flags:", re->ehdr.e_flags); 2200 dump_eflags(re, re->ehdr.e_flags); 2201 putchar('\n'); 2202 2203 /* e_ehsize. */ 2204 printf("%-37s%u (bytes)\n", " Size of this header:", 2205 re->ehdr.e_ehsize); 2206 2207 /* e_phentsize. */ 2208 printf("%-37s%u (bytes)\n", " Size of program headers:", 2209 re->ehdr.e_phentsize); 2210 2211 /* e_phnum. */ 2212 printf("%-37s%u", " Number of program headers:", re->ehdr.e_phnum); 2213 if (re->ehdr.e_phnum == PN_XNUM) { 2214 /* Extended program header numbering is in use. */ 2215 if (elf_getphnum(re->elf, &phnum)) 2216 printf(" (%zu)", phnum); 2217 } 2218 putchar('\n'); 2219 2220 /* e_shentsize. */ 2221 printf("%-37s%u (bytes)\n", " Size of section headers:", 2222 re->ehdr.e_shentsize); 2223 2224 /* e_shnum. */ 2225 printf("%-37s%u", " Number of section headers:", re->ehdr.e_shnum); 2226 if (re->ehdr.e_shnum == SHN_UNDEF) { 2227 /* Extended section numbering is in use. */ 2228 if (elf_getshnum(re->elf, &shnum)) 2229 printf(" (%ju)", (uintmax_t)shnum); 2230 } 2231 putchar('\n'); 2232 2233 /* e_shstrndx. */ 2234 printf("%-37s%u", " Section header string table index:", 2235 re->ehdr.e_shstrndx); 2236 if (re->ehdr.e_shstrndx == SHN_XINDEX) { 2237 /* Extended section numbering is in use. */ 2238 if (elf_getshstrndx(re->elf, &shstrndx)) 2239 printf(" (%ju)", (uintmax_t)shstrndx); 2240 } 2241 putchar('\n'); 2242 } 2243 2244 static void 2245 dump_eflags(struct readelf *re, uint64_t e_flags) 2246 { 2247 struct eflags_desc *edesc; 2248 int arm_eabi; 2249 2250 edesc = NULL; 2251 switch (re->ehdr.e_machine) { 2252 case EM_ARM: 2253 arm_eabi = (e_flags & EF_ARM_EABIMASK) >> 24; 2254 if (arm_eabi == 0) 2255 printf(", GNU EABI"); 2256 else if (arm_eabi <= 5) 2257 printf(", Version%d EABI", arm_eabi); 2258 edesc = arm_eflags_desc; 2259 break; 2260 case EM_MIPS: 2261 case EM_MIPS_RS3_LE: 2262 switch ((e_flags & EF_MIPS_ARCH) >> 28) { 2263 case 0: printf(", mips1"); break; 2264 case 1: printf(", mips2"); break; 2265 case 2: printf(", mips3"); break; 2266 case 3: printf(", mips4"); break; 2267 case 4: printf(", mips5"); break; 2268 case 5: printf(", mips32"); break; 2269 case 6: printf(", mips64"); break; 2270 case 7: printf(", mips32r2"); break; 2271 case 8: printf(", mips64r2"); break; 2272 default: break; 2273 } 2274 switch ((e_flags & 0x00FF0000) >> 16) { 2275 case 0x81: printf(", 3900"); break; 2276 case 0x82: printf(", 4010"); break; 2277 case 0x83: printf(", 4100"); break; 2278 case 0x85: printf(", 4650"); break; 2279 case 0x87: printf(", 4120"); break; 2280 case 0x88: printf(", 4111"); break; 2281 case 0x8a: printf(", sb1"); break; 2282 case 0x8b: printf(", octeon"); break; 2283 case 0x8c: printf(", xlr"); break; 2284 case 0x91: printf(", 5400"); break; 2285 case 0x98: printf(", 5500"); break; 2286 case 0x99: printf(", 9000"); break; 2287 case 0xa0: printf(", loongson-2e"); break; 2288 case 0xa1: printf(", loongson-2f"); break; 2289 default: break; 2290 } 2291 switch ((e_flags & 0x0000F000) >> 12) { 2292 case 1: printf(", o32"); break; 2293 case 2: printf(", o64"); break; 2294 case 3: printf(", eabi32"); break; 2295 case 4: printf(", eabi64"); break; 2296 default: break; 2297 } 2298 edesc = mips_eflags_desc; 2299 break; 2300 case EM_PPC: 2301 case EM_PPC64: 2302 edesc = powerpc_eflags_desc; 2303 break; 2304 case EM_RISCV: 2305 switch (e_flags & EF_RISCV_FLOAT_ABI_MASK) { 2306 case EF_RISCV_FLOAT_ABI_SOFT: 2307 printf(", soft-float ABI"); 2308 break; 2309 case EF_RISCV_FLOAT_ABI_SINGLE: 2310 printf(", single-float ABI"); 2311 break; 2312 case EF_RISCV_FLOAT_ABI_DOUBLE: 2313 printf(", double-float ABI"); 2314 break; 2315 case EF_RISCV_FLOAT_ABI_QUAD: 2316 printf(", quad-float ABI"); 2317 break; 2318 } 2319 edesc = riscv_eflags_desc; 2320 break; 2321 case EM_SPARC: 2322 case EM_SPARC32PLUS: 2323 case EM_SPARCV9: 2324 switch ((e_flags & EF_SPARCV9_MM)) { 2325 case EF_SPARCV9_TSO: printf(", tso"); break; 2326 case EF_SPARCV9_PSO: printf(", pso"); break; 2327 case EF_SPARCV9_MM: printf(", rmo"); break; 2328 default: break; 2329 } 2330 edesc = sparc_eflags_desc; 2331 break; 2332 default: 2333 break; 2334 } 2335 2336 if (edesc != NULL) { 2337 while (edesc->desc != NULL) { 2338 if (e_flags & edesc->flag) 2339 printf(", %s", edesc->desc); 2340 edesc++; 2341 } 2342 } 2343 } 2344 2345 static void 2346 dump_phdr(struct readelf *re) 2347 { 2348 const char *rawfile; 2349 GElf_Phdr phdr; 2350 size_t phnum, size; 2351 int i, j; 2352 2353 #define PH_HDR "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz", \ 2354 "MemSiz", "Flg", "Align" 2355 #define PH_CT phdr_type(re->ehdr.e_machine, phdr.p_type), \ 2356 (uintmax_t)phdr.p_offset, (uintmax_t)phdr.p_vaddr, \ 2357 (uintmax_t)phdr.p_paddr, (uintmax_t)phdr.p_filesz, \ 2358 (uintmax_t)phdr.p_memsz, \ 2359 phdr.p_flags & PF_R ? 'R' : ' ', \ 2360 phdr.p_flags & PF_W ? 'W' : ' ', \ 2361 phdr.p_flags & PF_X ? 'E' : ' ', \ 2362 (uintmax_t)phdr.p_align 2363 2364 if (elf_getphnum(re->elf, &phnum) == 0) { 2365 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 2366 return; 2367 } 2368 if (phnum == 0) { 2369 printf("\nThere are no program headers in this file.\n"); 2370 return; 2371 } 2372 2373 printf("\nElf file type is %s", elf_type(re->ehdr.e_type)); 2374 printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry); 2375 printf("There are %ju program headers, starting at offset %ju\n", 2376 (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff); 2377 2378 /* Dump program headers. */ 2379 printf("\nProgram Headers:\n"); 2380 if (re->ec == ELFCLASS32) 2381 printf(" %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR); 2382 else if (re->options & RE_WW) 2383 printf(" %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR); 2384 else 2385 printf(" %-15s%-19s%-19s%s\n %-19s%-20s" 2386 "%-7s%s\n", PH_HDR); 2387 for (i = 0; (size_t) i < phnum; i++) { 2388 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2389 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2390 continue; 2391 } 2392 /* TODO: Add arch-specific segment type dump. */ 2393 if (re->ec == ELFCLASS32) 2394 printf(" %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx " 2395 "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT); 2396 else if (re->options & RE_WW) 2397 printf(" %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx " 2398 "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT); 2399 else 2400 printf(" %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n" 2401 " 0x%16.16jx 0x%16.16jx %c%c%c" 2402 " %#jx\n", PH_CT); 2403 if (phdr.p_type == PT_INTERP) { 2404 if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) { 2405 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 2406 continue; 2407 } 2408 if (phdr.p_offset >= size) { 2409 warnx("invalid program header offset"); 2410 continue; 2411 } 2412 printf(" [Requesting program interpreter: %s]\n", 2413 rawfile + phdr.p_offset); 2414 } 2415 } 2416 2417 /* Dump section to segment mapping. */ 2418 if (re->shnum == 0) 2419 return; 2420 printf("\n Section to Segment mapping:\n"); 2421 printf(" Segment Sections...\n"); 2422 for (i = 0; (size_t)i < phnum; i++) { 2423 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2424 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2425 continue; 2426 } 2427 printf(" %2.2d ", i); 2428 /* skip NULL section. */ 2429 for (j = 1; (size_t)j < re->shnum; j++) { 2430 if (re->sl[j].off < phdr.p_offset) 2431 continue; 2432 if (re->sl[j].off + re->sl[j].sz > 2433 phdr.p_offset + phdr.p_filesz && 2434 re->sl[j].type != SHT_NOBITS) 2435 continue; 2436 if (re->sl[j].addr < phdr.p_vaddr || 2437 re->sl[j].addr + re->sl[j].sz > 2438 phdr.p_vaddr + phdr.p_memsz) 2439 continue; 2440 if (phdr.p_type == PT_TLS && 2441 (re->sl[j].flags & SHF_TLS) == 0) 2442 continue; 2443 printf("%s ", re->sl[j].name); 2444 } 2445 printf("\n"); 2446 } 2447 #undef PH_HDR 2448 #undef PH_CT 2449 } 2450 2451 static char * 2452 section_flags(struct readelf *re, struct section *s) 2453 { 2454 #define BUF_SZ 256 2455 static char buf[BUF_SZ]; 2456 int i, p, nb; 2457 2458 p = 0; 2459 nb = re->ec == ELFCLASS32 ? 8 : 16; 2460 if (re->options & RE_T) { 2461 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb, 2462 (uintmax_t)s->flags); 2463 p += nb + 4; 2464 } 2465 for (i = 0; section_flag[i].ln != NULL; i++) { 2466 if ((s->flags & section_flag[i].value) == 0) 2467 continue; 2468 if (re->options & RE_T) { 2469 snprintf(&buf[p], BUF_SZ - p, "%s, ", 2470 section_flag[i].ln); 2471 p += strlen(section_flag[i].ln) + 2; 2472 } else 2473 buf[p++] = section_flag[i].sn; 2474 } 2475 if (re->options & RE_T && p > nb + 4) 2476 p -= 2; 2477 buf[p] = '\0'; 2478 2479 return (buf); 2480 } 2481 2482 static void 2483 dump_shdr(struct readelf *re) 2484 { 2485 struct section *s; 2486 int i; 2487 2488 #define S_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2489 "Flg", "Lk", "Inf", "Al" 2490 #define S_HDRL "[Nr] Name", "Type", "Address", "Offset", "Size", \ 2491 "EntSize", "Flags", "Link", "Info", "Align" 2492 #define ST_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2493 "Lk", "Inf", "Al", "Flags" 2494 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link", \ 2495 "Size", "EntSize", "Info", "Align", "Flags" 2496 #define S_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2497 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2498 (uintmax_t)s->entsize, section_flags(re, s), \ 2499 s->link, s->info, (uintmax_t)s->align 2500 #define ST_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2501 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2502 (uintmax_t)s->entsize, s->link, s->info, \ 2503 (uintmax_t)s->align, section_flags(re, s) 2504 #define ST_CTL i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2505 (uintmax_t)s->addr, (uintmax_t)s->off, s->link, \ 2506 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info, \ 2507 (uintmax_t)s->align, section_flags(re, s) 2508 2509 if (re->shnum == 0) { 2510 printf("\nThere are no sections in this file.\n"); 2511 return; 2512 } 2513 printf("There are %ju section headers, starting at offset 0x%jx:\n", 2514 (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff); 2515 printf("\nSection Headers:\n"); 2516 if (re->ec == ELFCLASS32) { 2517 if (re->options & RE_T) 2518 printf(" %s\n %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n" 2519 "%12s\n", ST_HDR); 2520 else 2521 printf(" %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2522 S_HDR); 2523 } else if (re->options & RE_WW) { 2524 if (re->options & RE_T) 2525 printf(" %s\n %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n" 2526 "%12s\n", ST_HDR); 2527 else 2528 printf(" %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2529 S_HDR); 2530 } else { 2531 if (re->options & RE_T) 2532 printf(" %s\n %-18s%-17s%-18s%s\n %-18s" 2533 "%-17s%-18s%s\n%12s\n", ST_HDRL); 2534 else 2535 printf(" %-23s%-17s%-18s%s\n %-18s%-17s%-7s%" 2536 "-6s%-6s%s\n", S_HDRL); 2537 } 2538 for (i = 0; (size_t)i < re->shnum; i++) { 2539 s = &re->sl[i]; 2540 if (re->ec == ELFCLASS32) { 2541 if (re->options & RE_T) 2542 printf(" [%2d] %s\n %-15.15s %8.8jx" 2543 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2544 " %s\n", ST_CT); 2545 else 2546 printf(" [%2d] %-17.17s %-15.15s %8.8jx" 2547 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2548 S_CT); 2549 } else if (re->options & RE_WW) { 2550 if (re->options & RE_T) 2551 printf(" [%2d] %s\n %-15.15s %16.16jx" 2552 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2553 " %s\n", ST_CT); 2554 else 2555 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2556 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2557 S_CT); 2558 } else { 2559 if (re->options & RE_T) 2560 printf(" [%2d] %s\n %-15.15s %16.16jx" 2561 " %16.16jx %u\n %16.16jx %16.16jx" 2562 " %-16u %ju\n %s\n", ST_CTL); 2563 else 2564 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2565 " %8.8jx\n %16.16jx %16.16jx " 2566 "%3s %2u %3u %ju\n", S_CT); 2567 } 2568 } 2569 if ((re->options & RE_T) == 0) 2570 printf("Key to Flags:\n W (write), A (alloc)," 2571 " X (execute), M (merge), S (strings)\n" 2572 " I (info), L (link order), G (group), x (unknown)\n" 2573 " O (extra OS processing required)" 2574 " o (OS specific), p (processor specific)\n"); 2575 2576 #undef S_HDR 2577 #undef S_HDRL 2578 #undef ST_HDR 2579 #undef ST_HDRL 2580 #undef S_CT 2581 #undef ST_CT 2582 #undef ST_CTL 2583 } 2584 2585 /* 2586 * Return number of entries in the given section. We'd prefer ent_count be a 2587 * size_t *, but libelf APIs already use int for section indices. 2588 */ 2589 static int 2590 get_ent_count(struct section *s, int *ent_count) 2591 { 2592 if (s->entsize == 0) { 2593 warnx("section %s has entry size 0", s->name); 2594 return (0); 2595 } else if (s->sz / s->entsize > INT_MAX) { 2596 warnx("section %s has invalid section count", s->name); 2597 return (0); 2598 } 2599 *ent_count = (int)(s->sz / s->entsize); 2600 return (1); 2601 } 2602 2603 static void 2604 dump_dynamic(struct readelf *re) 2605 { 2606 GElf_Dyn dyn; 2607 Elf_Data *d; 2608 struct section *s; 2609 int elferr, i, is_dynamic, j, jmax, nentries; 2610 2611 is_dynamic = 0; 2612 2613 for (i = 0; (size_t)i < re->shnum; i++) { 2614 s = &re->sl[i]; 2615 if (s->type != SHT_DYNAMIC) 2616 continue; 2617 (void) elf_errno(); 2618 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2619 elferr = elf_errno(); 2620 if (elferr != 0) 2621 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 2622 continue; 2623 } 2624 if (d->d_size <= 0) 2625 continue; 2626 2627 is_dynamic = 1; 2628 2629 /* Determine the actual number of table entries. */ 2630 nentries = 0; 2631 if (!get_ent_count(s, &jmax)) 2632 continue; 2633 for (j = 0; j < jmax; j++) { 2634 if (gelf_getdyn(d, j, &dyn) != &dyn) { 2635 warnx("gelf_getdyn failed: %s", 2636 elf_errmsg(-1)); 2637 continue; 2638 } 2639 nentries ++; 2640 if (dyn.d_tag == DT_NULL) 2641 break; 2642 } 2643 2644 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off); 2645 printf(" contains %u entries:\n", nentries); 2646 2647 if (re->ec == ELFCLASS32) 2648 printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value"); 2649 else 2650 printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value"); 2651 2652 for (j = 0; j < nentries; j++) { 2653 if (gelf_getdyn(d, j, &dyn) != &dyn) 2654 continue; 2655 /* Dump dynamic entry type. */ 2656 if (re->ec == ELFCLASS32) 2657 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag); 2658 else 2659 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag); 2660 printf(" %-20s", dt_type(re->ehdr.e_machine, 2661 dyn.d_tag)); 2662 /* Dump dynamic entry value. */ 2663 dump_dyn_val(re, &dyn, s->link); 2664 } 2665 } 2666 2667 if (!is_dynamic) 2668 printf("\nThere is no dynamic section in this file.\n"); 2669 } 2670 2671 static char * 2672 timestamp(time_t ti) 2673 { 2674 static char ts[32]; 2675 struct tm *t; 2676 2677 t = gmtime(&ti); 2678 snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d", 2679 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, 2680 t->tm_min, t->tm_sec); 2681 2682 return (ts); 2683 } 2684 2685 static const char * 2686 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val) 2687 { 2688 const char *name; 2689 2690 if (stab == SHN_UNDEF) 2691 name = "ERROR"; 2692 else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) { 2693 (void) elf_errno(); /* clear error */ 2694 name = "ERROR"; 2695 } 2696 2697 return (name); 2698 } 2699 2700 static void 2701 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn) 2702 { 2703 switch (re->ehdr.e_machine) { 2704 case EM_MIPS: 2705 case EM_MIPS_RS3_LE: 2706 switch (dyn->d_tag) { 2707 case DT_MIPS_RLD_VERSION: 2708 case DT_MIPS_LOCAL_GOTNO: 2709 case DT_MIPS_CONFLICTNO: 2710 case DT_MIPS_LIBLISTNO: 2711 case DT_MIPS_SYMTABNO: 2712 case DT_MIPS_UNREFEXTNO: 2713 case DT_MIPS_GOTSYM: 2714 case DT_MIPS_HIPAGENO: 2715 case DT_MIPS_DELTA_CLASS_NO: 2716 case DT_MIPS_DELTA_INSTANCE_NO: 2717 case DT_MIPS_DELTA_RELOC_NO: 2718 case DT_MIPS_DELTA_SYM_NO: 2719 case DT_MIPS_DELTA_CLASSSYM_NO: 2720 case DT_MIPS_LOCALPAGE_GOTIDX: 2721 case DT_MIPS_LOCAL_GOTIDX: 2722 case DT_MIPS_HIDDEN_GOTIDX: 2723 case DT_MIPS_PROTECTED_GOTIDX: 2724 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2725 break; 2726 case DT_MIPS_ICHECKSUM: 2727 case DT_MIPS_FLAGS: 2728 case DT_MIPS_BASE_ADDRESS: 2729 case DT_MIPS_CONFLICT: 2730 case DT_MIPS_LIBLIST: 2731 case DT_MIPS_RLD_MAP: 2732 case DT_MIPS_DELTA_CLASS: 2733 case DT_MIPS_DELTA_INSTANCE: 2734 case DT_MIPS_DELTA_RELOC: 2735 case DT_MIPS_DELTA_SYM: 2736 case DT_MIPS_DELTA_CLASSSYM: 2737 case DT_MIPS_CXX_FLAGS: 2738 case DT_MIPS_PIXIE_INIT: 2739 case DT_MIPS_SYMBOL_LIB: 2740 case DT_MIPS_OPTIONS: 2741 case DT_MIPS_INTERFACE: 2742 case DT_MIPS_DYNSTR_ALIGN: 2743 case DT_MIPS_INTERFACE_SIZE: 2744 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2745 case DT_MIPS_COMPACT_SIZE: 2746 case DT_MIPS_GP_VALUE: 2747 case DT_MIPS_AUX_DYNAMIC: 2748 case DT_MIPS_PLTGOT: 2749 case DT_MIPS_RLD_OBJ_UPDATE: 2750 case DT_MIPS_RWPLT: 2751 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2752 break; 2753 case DT_MIPS_IVERSION: 2754 case DT_MIPS_PERF_SUFFIX: 2755 case DT_MIPS_TIME_STAMP: 2756 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2757 break; 2758 default: 2759 printf("\n"); 2760 break; 2761 } 2762 break; 2763 default: 2764 printf("\n"); 2765 break; 2766 } 2767 } 2768 2769 static void 2770 dump_flags(struct flag_desc *desc, uint64_t val) 2771 { 2772 struct flag_desc *fd; 2773 2774 for (fd = desc; fd->flag != 0; fd++) { 2775 if (val & fd->flag) { 2776 val &= ~fd->flag; 2777 printf(" %s", fd->desc); 2778 } 2779 } 2780 if (val != 0) 2781 printf(" unknown (0x%jx)", (uintmax_t)val); 2782 printf("\n"); 2783 } 2784 2785 static struct flag_desc dt_flags[] = { 2786 { DF_ORIGIN, "ORIGIN" }, 2787 { DF_SYMBOLIC, "SYMBOLIC" }, 2788 { DF_TEXTREL, "TEXTREL" }, 2789 { DF_BIND_NOW, "BIND_NOW" }, 2790 { DF_STATIC_TLS, "STATIC_TLS" }, 2791 { 0, NULL } 2792 }; 2793 2794 static struct flag_desc dt_flags_1[] = { 2795 { DF_1_BIND_NOW, "NOW" }, 2796 { DF_1_GLOBAL, "GLOBAL" }, 2797 { 0x4, "GROUP" }, 2798 { DF_1_NODELETE, "NODELETE" }, 2799 { DF_1_LOADFLTR, "LOADFLTR" }, 2800 { 0x20, "INITFIRST" }, 2801 { DF_1_NOOPEN, "NOOPEN" }, 2802 { DF_1_ORIGIN, "ORIGIN" }, 2803 { 0x100, "DIRECT" }, 2804 { DF_1_INTERPOSE, "INTERPOSE" }, 2805 { DF_1_NODEFLIB, "NODEFLIB" }, 2806 { 0x1000, "NODUMP" }, 2807 { 0x2000, "CONFALT" }, 2808 { 0x4000, "ENDFILTEE" }, 2809 { 0x8000, "DISPRELDNE" }, 2810 { 0x10000, "DISPRELPND" }, 2811 { 0x20000, "NODIRECT" }, 2812 { 0x40000, "IGNMULDEF" }, 2813 { 0x80000, "NOKSYMS" }, 2814 { 0x100000, "NOHDR" }, 2815 { 0x200000, "EDITED" }, 2816 { 0x400000, "NORELOC" }, 2817 { 0x800000, "SYMINTPOSE" }, 2818 { 0x1000000, "GLOBAUDIT" }, 2819 { 0, NULL } 2820 }; 2821 2822 static void 2823 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab) 2824 { 2825 const char *name; 2826 2827 if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC && 2828 dyn->d_tag != DT_AUXILIARY && dyn->d_tag != DT_FILTER) { 2829 dump_arch_dyn_val(re, dyn); 2830 return; 2831 } 2832 2833 /* These entry values are index into the string table. */ 2834 name = NULL; 2835 if (dyn->d_tag == DT_AUXILIARY || dyn->d_tag == DT_FILTER || 2836 dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME || 2837 dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH) 2838 name = dyn_str(re, stab, dyn->d_un.d_val); 2839 2840 switch(dyn->d_tag) { 2841 case DT_NULL: 2842 case DT_PLTGOT: 2843 case DT_HASH: 2844 case DT_STRTAB: 2845 case DT_SYMTAB: 2846 case DT_RELA: 2847 case DT_INIT: 2848 case DT_SYMBOLIC: 2849 case DT_REL: 2850 case DT_DEBUG: 2851 case DT_TEXTREL: 2852 case DT_JMPREL: 2853 case DT_FINI: 2854 case DT_VERDEF: 2855 case DT_VERNEED: 2856 case DT_VERSYM: 2857 case DT_GNU_HASH: 2858 case DT_GNU_LIBLIST: 2859 case DT_GNU_CONFLICT: 2860 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2861 break; 2862 case DT_PLTRELSZ: 2863 case DT_RELASZ: 2864 case DT_RELAENT: 2865 case DT_STRSZ: 2866 case DT_SYMENT: 2867 case DT_RELSZ: 2868 case DT_RELENT: 2869 case DT_PREINIT_ARRAYSZ: 2870 case DT_INIT_ARRAYSZ: 2871 case DT_FINI_ARRAYSZ: 2872 case DT_GNU_CONFLICTSZ: 2873 case DT_GNU_LIBLISTSZ: 2874 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val); 2875 break; 2876 case DT_RELACOUNT: 2877 case DT_RELCOUNT: 2878 case DT_VERDEFNUM: 2879 case DT_VERNEEDNUM: 2880 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2881 break; 2882 case DT_AUXILIARY: 2883 printf(" Auxiliary library: [%s]\n", name); 2884 break; 2885 case DT_FILTER: 2886 printf(" Filter library: [%s]\n", name); 2887 break; 2888 case DT_NEEDED: 2889 printf(" Shared library: [%s]\n", name); 2890 break; 2891 case DT_SONAME: 2892 printf(" Library soname: [%s]\n", name); 2893 break; 2894 case DT_RPATH: 2895 printf(" Library rpath: [%s]\n", name); 2896 break; 2897 case DT_RUNPATH: 2898 printf(" Library runpath: [%s]\n", name); 2899 break; 2900 case DT_PLTREL: 2901 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val)); 2902 break; 2903 case DT_GNU_PRELINKED: 2904 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2905 break; 2906 case DT_FLAGS: 2907 dump_flags(dt_flags, dyn->d_un.d_val); 2908 break; 2909 case DT_FLAGS_1: 2910 dump_flags(dt_flags_1, dyn->d_un.d_val); 2911 break; 2912 default: 2913 printf("\n"); 2914 } 2915 } 2916 2917 static void 2918 dump_rel(struct readelf *re, struct section *s, Elf_Data *d) 2919 { 2920 GElf_Rel r; 2921 const char *symname; 2922 uint64_t symval; 2923 int i, len; 2924 uint32_t type; 2925 uint8_t type2, type3; 2926 2927 if (s->link >= re->shnum) 2928 return; 2929 2930 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name" 2931 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2932 elftc_reloc_type_str(re->ehdr.e_machine, \ 2933 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2934 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2935 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 2936 (uintmax_t)symval, symname 2937 2938 printf("\nRelocation section (%s):\n", s->name); 2939 if (re->ec == ELFCLASS32) 2940 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR); 2941 else { 2942 if (re->options & RE_WW) 2943 printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR); 2944 else 2945 printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR); 2946 } 2947 assert(d->d_size == s->sz); 2948 if (!get_ent_count(s, &len)) 2949 return; 2950 for (i = 0; i < len; i++) { 2951 if (gelf_getrel(d, i, &r) != &r) { 2952 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 2953 continue; 2954 } 2955 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 2956 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 2957 if (re->ec == ELFCLASS32) { 2958 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 2959 ELF64_R_TYPE(r.r_info)); 2960 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32); 2961 } else { 2962 type = ELF64_R_TYPE(r.r_info); 2963 if (re->ehdr.e_machine == EM_MIPS) { 2964 type2 = (type >> 8) & 0xFF; 2965 type3 = (type >> 16) & 0xFF; 2966 type = type & 0xFF; 2967 } else { 2968 type2 = type3 = 0; 2969 } 2970 if (re->options & RE_WW) 2971 printf("%16.16jx %16.16jx %-24.24s" 2972 " %16.16jx %s\n", REL_CT64); 2973 else 2974 printf("%12.12jx %12.12jx %-19.19s" 2975 " %16.16jx %s\n", REL_CT64); 2976 if (re->ehdr.e_machine == EM_MIPS) { 2977 if (re->options & RE_WW) { 2978 printf("%32s: %s\n", "Type2", 2979 elftc_reloc_type_str(EM_MIPS, 2980 type2)); 2981 printf("%32s: %s\n", "Type3", 2982 elftc_reloc_type_str(EM_MIPS, 2983 type3)); 2984 } else { 2985 printf("%24s: %s\n", "Type2", 2986 elftc_reloc_type_str(EM_MIPS, 2987 type2)); 2988 printf("%24s: %s\n", "Type3", 2989 elftc_reloc_type_str(EM_MIPS, 2990 type3)); 2991 } 2992 } 2993 } 2994 } 2995 2996 #undef REL_HDR 2997 #undef REL_CT 2998 } 2999 3000 static void 3001 dump_rela(struct readelf *re, struct section *s, Elf_Data *d) 3002 { 3003 GElf_Rela r; 3004 const char *symname; 3005 uint64_t symval; 3006 int i, len; 3007 uint32_t type; 3008 uint8_t type2, type3; 3009 3010 if (s->link >= re->shnum) 3011 return; 3012 3013 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \ 3014 "st_name + r_addend" 3015 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3016 elftc_reloc_type_str(re->ehdr.e_machine, \ 3017 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 3018 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3019 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 3020 (uintmax_t)symval, symname 3021 3022 printf("\nRelocation section with addend (%s):\n", s->name); 3023 if (re->ec == ELFCLASS32) 3024 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR); 3025 else { 3026 if (re->options & RE_WW) 3027 printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR); 3028 else 3029 printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR); 3030 } 3031 assert(d->d_size == s->sz); 3032 if (!get_ent_count(s, &len)) 3033 return; 3034 for (i = 0; i < len; i++) { 3035 if (gelf_getrela(d, i, &r) != &r) { 3036 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 3037 continue; 3038 } 3039 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 3040 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 3041 if (re->ec == ELFCLASS32) { 3042 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 3043 ELF64_R_TYPE(r.r_info)); 3044 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32); 3045 printf(" + %x\n", (uint32_t) r.r_addend); 3046 } else { 3047 type = ELF64_R_TYPE(r.r_info); 3048 if (re->ehdr.e_machine == EM_MIPS) { 3049 type2 = (type >> 8) & 0xFF; 3050 type3 = (type >> 16) & 0xFF; 3051 type = type & 0xFF; 3052 } else { 3053 type2 = type3 = 0; 3054 } 3055 if (re->options & RE_WW) 3056 printf("%16.16jx %16.16jx %-24.24s" 3057 " %16.16jx %s", RELA_CT64); 3058 else 3059 printf("%12.12jx %12.12jx %-19.19s" 3060 " %16.16jx %s", RELA_CT64); 3061 printf(" + %jx\n", (uintmax_t) r.r_addend); 3062 if (re->ehdr.e_machine == EM_MIPS) { 3063 if (re->options & RE_WW) { 3064 printf("%32s: %s\n", "Type2", 3065 elftc_reloc_type_str(EM_MIPS, 3066 type2)); 3067 printf("%32s: %s\n", "Type3", 3068 elftc_reloc_type_str(EM_MIPS, 3069 type3)); 3070 } else { 3071 printf("%24s: %s\n", "Type2", 3072 elftc_reloc_type_str(EM_MIPS, 3073 type2)); 3074 printf("%24s: %s\n", "Type3", 3075 elftc_reloc_type_str(EM_MIPS, 3076 type3)); 3077 } 3078 } 3079 } 3080 } 3081 3082 #undef RELA_HDR 3083 #undef RELA_CT 3084 } 3085 3086 static void 3087 dump_reloc(struct readelf *re) 3088 { 3089 struct section *s; 3090 Elf_Data *d; 3091 int i, elferr; 3092 3093 for (i = 0; (size_t)i < re->shnum; i++) { 3094 s = &re->sl[i]; 3095 if (s->type == SHT_REL || s->type == SHT_RELA) { 3096 (void) elf_errno(); 3097 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3098 elferr = elf_errno(); 3099 if (elferr != 0) 3100 warnx("elf_getdata failed: %s", 3101 elf_errmsg(elferr)); 3102 continue; 3103 } 3104 if (s->type == SHT_REL) 3105 dump_rel(re, s, d); 3106 else 3107 dump_rela(re, s, d); 3108 } 3109 } 3110 } 3111 3112 static void 3113 dump_symtab(struct readelf *re, int i) 3114 { 3115 struct section *s; 3116 Elf_Data *d; 3117 GElf_Sym sym; 3118 const char *name; 3119 uint32_t stab; 3120 int elferr, j, len; 3121 uint16_t vs; 3122 3123 s = &re->sl[i]; 3124 if (s->link >= re->shnum) 3125 return; 3126 stab = s->link; 3127 (void) elf_errno(); 3128 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3129 elferr = elf_errno(); 3130 if (elferr != 0) 3131 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3132 return; 3133 } 3134 if (d->d_size <= 0) 3135 return; 3136 if (!get_ent_count(s, &len)) 3137 return; 3138 printf("Symbol table (%s)", s->name); 3139 printf(" contains %d entries:\n", len); 3140 printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type", 3141 "Bind", "Vis", "Ndx", "Name"); 3142 3143 for (j = 0; j < len; j++) { 3144 if (gelf_getsym(d, j, &sym) != &sym) { 3145 warnx("gelf_getsym failed: %s", elf_errmsg(-1)); 3146 continue; 3147 } 3148 printf("%6d:", j); 3149 printf(" %16.16jx", (uintmax_t) sym.st_value); 3150 printf(" %5ju", (uintmax_t) sym.st_size); 3151 printf(" %-7s", st_type(re->ehdr.e_machine, 3152 re->ehdr.e_ident[EI_OSABI], GELF_ST_TYPE(sym.st_info))); 3153 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info))); 3154 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other))); 3155 printf(" %3s", st_shndx(sym.st_shndx)); 3156 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL) 3157 printf(" %s", name); 3158 /* Append symbol version string for SHT_DYNSYM symbol table. */ 3159 if (s->type == SHT_DYNSYM && re->ver != NULL && 3160 re->vs != NULL && re->vs[j] > 1) { 3161 vs = re->vs[j] & VERSYM_VERSION; 3162 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3163 warnx("invalid versym version index %u", vs); 3164 break; 3165 } 3166 if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0) 3167 printf("@%s (%d)", re->ver[vs].name, vs); 3168 else 3169 printf("@@%s (%d)", re->ver[vs].name, vs); 3170 } 3171 putchar('\n'); 3172 } 3173 3174 } 3175 3176 static void 3177 dump_symtabs(struct readelf *re) 3178 { 3179 GElf_Dyn dyn; 3180 Elf_Data *d; 3181 struct section *s; 3182 uint64_t dyn_off; 3183 int elferr, i, len; 3184 3185 /* 3186 * If -D is specified, only dump the symbol table specified by 3187 * the DT_SYMTAB entry in the .dynamic section. 3188 */ 3189 dyn_off = 0; 3190 if (re->options & RE_DD) { 3191 s = NULL; 3192 for (i = 0; (size_t)i < re->shnum; i++) 3193 if (re->sl[i].type == SHT_DYNAMIC) { 3194 s = &re->sl[i]; 3195 break; 3196 } 3197 if (s == NULL) 3198 return; 3199 (void) elf_errno(); 3200 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3201 elferr = elf_errno(); 3202 if (elferr != 0) 3203 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 3204 return; 3205 } 3206 if (d->d_size <= 0) 3207 return; 3208 if (!get_ent_count(s, &len)) 3209 return; 3210 3211 for (i = 0; i < len; i++) { 3212 if (gelf_getdyn(d, i, &dyn) != &dyn) { 3213 warnx("gelf_getdyn failed: %s", elf_errmsg(-1)); 3214 continue; 3215 } 3216 if (dyn.d_tag == DT_SYMTAB) { 3217 dyn_off = dyn.d_un.d_val; 3218 break; 3219 } 3220 } 3221 } 3222 3223 /* Find and dump symbol tables. */ 3224 for (i = 0; (size_t)i < re->shnum; i++) { 3225 s = &re->sl[i]; 3226 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) { 3227 if (re->options & RE_DD) { 3228 if (dyn_off == s->addr) { 3229 dump_symtab(re, i); 3230 break; 3231 } 3232 } else 3233 dump_symtab(re, i); 3234 } 3235 } 3236 } 3237 3238 static void 3239 dump_svr4_hash(struct section *s) 3240 { 3241 Elf_Data *d; 3242 uint32_t *buf; 3243 uint32_t nbucket, nchain; 3244 uint32_t *bucket, *chain; 3245 uint32_t *bl, *c, maxl, total; 3246 int elferr, i, j; 3247 3248 /* Read and parse the content of .hash section. */ 3249 (void) elf_errno(); 3250 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3251 elferr = elf_errno(); 3252 if (elferr != 0) 3253 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3254 return; 3255 } 3256 if (d->d_size < 2 * sizeof(uint32_t)) { 3257 warnx(".hash section too small"); 3258 return; 3259 } 3260 buf = d->d_buf; 3261 nbucket = buf[0]; 3262 nchain = buf[1]; 3263 if (nbucket <= 0 || nchain <= 0) { 3264 warnx("Malformed .hash section"); 3265 return; 3266 } 3267 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3268 warnx("Malformed .hash section"); 3269 return; 3270 } 3271 bucket = &buf[2]; 3272 chain = &buf[2 + nbucket]; 3273 3274 maxl = 0; 3275 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3276 errx(EXIT_FAILURE, "calloc failed"); 3277 for (i = 0; (uint32_t)i < nbucket; i++) 3278 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3279 if (++bl[i] > maxl) 3280 maxl = bl[i]; 3281 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3282 errx(EXIT_FAILURE, "calloc failed"); 3283 for (i = 0; (uint32_t)i < nbucket; i++) 3284 c[bl[i]]++; 3285 printf("\nHistogram for bucket list length (total of %u buckets):\n", 3286 nbucket); 3287 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3288 total = 0; 3289 for (i = 0; (uint32_t)i <= maxl; i++) { 3290 total += c[i] * i; 3291 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3292 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3293 } 3294 free(c); 3295 free(bl); 3296 } 3297 3298 static void 3299 dump_svr4_hash64(struct readelf *re, struct section *s) 3300 { 3301 Elf_Data *d, dst; 3302 uint64_t *buf; 3303 uint64_t nbucket, nchain; 3304 uint64_t *bucket, *chain; 3305 uint64_t *bl, *c, maxl, total; 3306 int elferr, i, j; 3307 3308 /* 3309 * ALPHA uses 64-bit hash entries. Since libelf assumes that 3310 * .hash section contains only 32-bit entry, an explicit 3311 * gelf_xlatetom is needed here. 3312 */ 3313 (void) elf_errno(); 3314 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 3315 elferr = elf_errno(); 3316 if (elferr != 0) 3317 warnx("elf_rawdata failed: %s", 3318 elf_errmsg(elferr)); 3319 return; 3320 } 3321 d->d_type = ELF_T_XWORD; 3322 memcpy(&dst, d, sizeof(Elf_Data)); 3323 if (gelf_xlatetom(re->elf, &dst, d, 3324 re->ehdr.e_ident[EI_DATA]) != &dst) { 3325 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1)); 3326 return; 3327 } 3328 if (dst.d_size < 2 * sizeof(uint64_t)) { 3329 warnx(".hash section too small"); 3330 return; 3331 } 3332 buf = dst.d_buf; 3333 nbucket = buf[0]; 3334 nchain = buf[1]; 3335 if (nbucket <= 0 || nchain <= 0) { 3336 warnx("Malformed .hash section"); 3337 return; 3338 } 3339 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3340 warnx("Malformed .hash section"); 3341 return; 3342 } 3343 bucket = &buf[2]; 3344 chain = &buf[2 + nbucket]; 3345 3346 maxl = 0; 3347 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3348 errx(EXIT_FAILURE, "calloc failed"); 3349 for (i = 0; (uint32_t)i < nbucket; i++) 3350 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3351 if (++bl[i] > maxl) 3352 maxl = bl[i]; 3353 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3354 errx(EXIT_FAILURE, "calloc failed"); 3355 for (i = 0; (uint64_t)i < nbucket; i++) 3356 c[bl[i]]++; 3357 printf("Histogram for bucket list length (total of %ju buckets):\n", 3358 (uintmax_t)nbucket); 3359 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3360 total = 0; 3361 for (i = 0; (uint64_t)i <= maxl; i++) { 3362 total += c[i] * i; 3363 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i], 3364 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3365 } 3366 free(c); 3367 free(bl); 3368 } 3369 3370 static void 3371 dump_gnu_hash(struct readelf *re, struct section *s) 3372 { 3373 struct section *ds; 3374 Elf_Data *d; 3375 uint32_t *buf; 3376 uint32_t *bucket, *chain; 3377 uint32_t nbucket, nchain, symndx, maskwords; 3378 uint32_t *bl, *c, maxl, total; 3379 int elferr, dynsymcount, i, j; 3380 3381 (void) elf_errno(); 3382 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3383 elferr = elf_errno(); 3384 if (elferr != 0) 3385 warnx("elf_getdata failed: %s", 3386 elf_errmsg(elferr)); 3387 return; 3388 } 3389 if (d->d_size < 4 * sizeof(uint32_t)) { 3390 warnx(".gnu.hash section too small"); 3391 return; 3392 } 3393 buf = d->d_buf; 3394 nbucket = buf[0]; 3395 symndx = buf[1]; 3396 maskwords = buf[2]; 3397 buf += 4; 3398 if (s->link >= re->shnum) 3399 return; 3400 ds = &re->sl[s->link]; 3401 if (!get_ent_count(ds, &dynsymcount)) 3402 return; 3403 if (symndx >= (uint32_t)dynsymcount) { 3404 warnx("Malformed .gnu.hash section (symndx out of range)"); 3405 return; 3406 } 3407 nchain = dynsymcount - symndx; 3408 if (d->d_size != 4 * sizeof(uint32_t) + maskwords * 3409 (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) + 3410 (nbucket + nchain) * sizeof(uint32_t)) { 3411 warnx("Malformed .gnu.hash section"); 3412 return; 3413 } 3414 bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2); 3415 chain = bucket + nbucket; 3416 3417 maxl = 0; 3418 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3419 errx(EXIT_FAILURE, "calloc failed"); 3420 for (i = 0; (uint32_t)i < nbucket; i++) 3421 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain; 3422 j++) { 3423 if (++bl[i] > maxl) 3424 maxl = bl[i]; 3425 if (chain[j - symndx] & 1) 3426 break; 3427 } 3428 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3429 errx(EXIT_FAILURE, "calloc failed"); 3430 for (i = 0; (uint32_t)i < nbucket; i++) 3431 c[bl[i]]++; 3432 printf("Histogram for bucket list length (total of %u buckets):\n", 3433 nbucket); 3434 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3435 total = 0; 3436 for (i = 0; (uint32_t)i <= maxl; i++) { 3437 total += c[i] * i; 3438 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3439 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3440 } 3441 free(c); 3442 free(bl); 3443 } 3444 3445 static void 3446 dump_hash(struct readelf *re) 3447 { 3448 struct section *s; 3449 int i; 3450 3451 for (i = 0; (size_t) i < re->shnum; i++) { 3452 s = &re->sl[i]; 3453 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) { 3454 if (s->type == SHT_GNU_HASH) 3455 dump_gnu_hash(re, s); 3456 else if (re->ehdr.e_machine == EM_ALPHA && 3457 s->entsize == 8) 3458 dump_svr4_hash64(re, s); 3459 else 3460 dump_svr4_hash(s); 3461 } 3462 } 3463 } 3464 3465 static void 3466 dump_notes(struct readelf *re) 3467 { 3468 struct section *s; 3469 const char *rawfile; 3470 GElf_Phdr phdr; 3471 Elf_Data *d; 3472 size_t filesize, phnum; 3473 int i, elferr; 3474 3475 if (re->ehdr.e_type == ET_CORE) { 3476 /* 3477 * Search program headers in the core file for 3478 * PT_NOTE entry. 3479 */ 3480 if (elf_getphnum(re->elf, &phnum) == 0) { 3481 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 3482 return; 3483 } 3484 if (phnum == 0) 3485 return; 3486 if ((rawfile = elf_rawfile(re->elf, &filesize)) == NULL) { 3487 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 3488 return; 3489 } 3490 for (i = 0; (size_t) i < phnum; i++) { 3491 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 3492 warnx("gelf_getphdr failed: %s", 3493 elf_errmsg(-1)); 3494 continue; 3495 } 3496 if (phdr.p_type == PT_NOTE) { 3497 if (phdr.p_offset >= filesize || 3498 phdr.p_filesz > filesize - phdr.p_offset) { 3499 warnx("invalid PHDR offset"); 3500 continue; 3501 } 3502 dump_notes_content(re, rawfile + phdr.p_offset, 3503 phdr.p_filesz, phdr.p_offset); 3504 } 3505 } 3506 3507 } else { 3508 /* 3509 * For objects other than core files, Search for 3510 * SHT_NOTE sections. 3511 */ 3512 for (i = 0; (size_t) i < re->shnum; i++) { 3513 s = &re->sl[i]; 3514 if (s->type == SHT_NOTE) { 3515 (void) elf_errno(); 3516 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3517 elferr = elf_errno(); 3518 if (elferr != 0) 3519 warnx("elf_getdata failed: %s", 3520 elf_errmsg(elferr)); 3521 continue; 3522 } 3523 dump_notes_content(re, d->d_buf, d->d_size, 3524 s->off); 3525 } 3526 } 3527 } 3528 } 3529 3530 static struct flag_desc note_feature_ctl_flags[] = { 3531 { NT_FREEBSD_FCTL_ASLR_DISABLE, "ASLR_DISABLE" }, 3532 { 0, NULL } 3533 }; 3534 3535 static void 3536 dump_notes_data(const char *name, uint32_t type, const char *buf, size_t sz) 3537 { 3538 size_t i; 3539 const uint32_t *ubuf; 3540 3541 /* Note data is at least 4-byte aligned. */ 3542 if (((uintptr_t)buf & 3) != 0) { 3543 warnx("bad note data alignment"); 3544 goto unknown; 3545 } 3546 ubuf = (const uint32_t *)(const void *)buf; 3547 3548 if (strcmp(name, "FreeBSD") == 0) { 3549 switch (type) { 3550 case NT_FREEBSD_ABI_TAG: 3551 if (sz != 4) 3552 goto unknown; 3553 printf(" ABI tag: %u\n", ubuf[0]); 3554 return; 3555 /* NT_FREEBSD_NOINIT_TAG carries no data, treat as unknown. */ 3556 case NT_FREEBSD_ARCH_TAG: 3557 if (sz != 4) 3558 goto unknown; 3559 printf(" Arch tag: %x\n", ubuf[0]); 3560 return; 3561 case NT_FREEBSD_FEATURE_CTL: 3562 if (sz != 4) 3563 goto unknown; 3564 printf(" Features:"); 3565 dump_flags(note_feature_ctl_flags, ubuf[0]); 3566 return; 3567 } 3568 } 3569 unknown: 3570 printf(" description data:"); 3571 for (i = 0; i < sz; i++) 3572 printf(" %02x", (unsigned char)buf[i]); 3573 printf("\n"); 3574 } 3575 3576 static void 3577 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off) 3578 { 3579 Elf_Note *note; 3580 const char *end, *name; 3581 3582 printf("\nNotes at offset %#010jx with length %#010jx:\n", 3583 (uintmax_t) off, (uintmax_t) sz); 3584 printf(" %-13s %-15s %s\n", "Owner", "Data size", "Description"); 3585 end = buf + sz; 3586 while (buf < end) { 3587 if (buf + sizeof(*note) > end) { 3588 warnx("invalid note header"); 3589 return; 3590 } 3591 note = (Elf_Note *)(uintptr_t) buf; 3592 buf += sizeof(Elf_Note); 3593 name = buf; 3594 buf += roundup2(note->n_namesz, 4); 3595 /* 3596 * The name field is required to be nul-terminated, and 3597 * n_namesz includes the terminating nul in observed 3598 * implementations (contrary to the ELF-64 spec). A special 3599 * case is needed for cores generated by some older Linux 3600 * versions, which write a note named "CORE" without a nul 3601 * terminator and n_namesz = 4. 3602 */ 3603 if (note->n_namesz == 0) 3604 name = ""; 3605 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0) 3606 name = "CORE"; 3607 else if (strnlen(name, note->n_namesz) >= note->n_namesz) 3608 name = "<invalid>"; 3609 printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz); 3610 printf(" %s\n", note_type(name, re->ehdr.e_type, 3611 note->n_type)); 3612 dump_notes_data(name, note->n_type, buf, note->n_descsz); 3613 buf += roundup2(note->n_descsz, 4); 3614 } 3615 } 3616 3617 /* 3618 * Symbol versioning sections are the same for 32bit and 64bit 3619 * ELF objects. 3620 */ 3621 #define Elf_Verdef Elf32_Verdef 3622 #define Elf_Verdaux Elf32_Verdaux 3623 #define Elf_Verneed Elf32_Verneed 3624 #define Elf_Vernaux Elf32_Vernaux 3625 3626 #define SAVE_VERSION_NAME(x, n, t) \ 3627 do { \ 3628 while (x >= re->ver_sz) { \ 3629 nv = realloc(re->ver, \ 3630 sizeof(*re->ver) * re->ver_sz * 2); \ 3631 if (nv == NULL) { \ 3632 warn("realloc failed"); \ 3633 free(re->ver); \ 3634 return; \ 3635 } \ 3636 re->ver = nv; \ 3637 for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \ 3638 re->ver[i].name = NULL; \ 3639 re->ver[i].type = 0; \ 3640 } \ 3641 re->ver_sz *= 2; \ 3642 } \ 3643 if (x > 1) { \ 3644 re->ver[x].name = n; \ 3645 re->ver[x].type = t; \ 3646 } \ 3647 } while (0) 3648 3649 3650 static void 3651 dump_verdef(struct readelf *re, int dump) 3652 { 3653 struct section *s; 3654 struct symver *nv; 3655 Elf_Data *d; 3656 Elf_Verdef *vd; 3657 Elf_Verdaux *vda; 3658 uint8_t *buf, *end, *buf2; 3659 const char *name; 3660 int elferr, i, j; 3661 3662 if ((s = re->vd_s) == NULL) 3663 return; 3664 if (s->link >= re->shnum) 3665 return; 3666 3667 if (re->ver == NULL) { 3668 re->ver_sz = 16; 3669 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3670 NULL) { 3671 warn("calloc failed"); 3672 return; 3673 } 3674 re->ver[0].name = "*local*"; 3675 re->ver[1].name = "*global*"; 3676 } 3677 3678 if (dump) 3679 printf("\nVersion definition section (%s):\n", s->name); 3680 (void) elf_errno(); 3681 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3682 elferr = elf_errno(); 3683 if (elferr != 0) 3684 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3685 return; 3686 } 3687 if (d->d_size == 0) 3688 return; 3689 3690 buf = d->d_buf; 3691 end = buf + d->d_size; 3692 while (buf + sizeof(Elf_Verdef) <= end) { 3693 vd = (Elf_Verdef *) (uintptr_t) buf; 3694 if (dump) { 3695 printf(" 0x%4.4lx", (unsigned long) 3696 (buf - (uint8_t *)d->d_buf)); 3697 printf(" vd_version: %u vd_flags: %d" 3698 " vd_ndx: %u vd_cnt: %u", vd->vd_version, 3699 vd->vd_flags, vd->vd_ndx, vd->vd_cnt); 3700 } 3701 buf2 = buf + vd->vd_aux; 3702 j = 0; 3703 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) { 3704 vda = (Elf_Verdaux *) (uintptr_t) buf2; 3705 name = get_string(re, s->link, vda->vda_name); 3706 if (j == 0) { 3707 if (dump) 3708 printf(" vda_name: %s\n", name); 3709 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1); 3710 } else if (dump) 3711 printf(" 0x%4.4lx parent: %s\n", 3712 (unsigned long) (buf2 - 3713 (uint8_t *)d->d_buf), name); 3714 if (vda->vda_next == 0) 3715 break; 3716 buf2 += vda->vda_next; 3717 j++; 3718 } 3719 if (vd->vd_next == 0) 3720 break; 3721 buf += vd->vd_next; 3722 } 3723 } 3724 3725 static void 3726 dump_verneed(struct readelf *re, int dump) 3727 { 3728 struct section *s; 3729 struct symver *nv; 3730 Elf_Data *d; 3731 Elf_Verneed *vn; 3732 Elf_Vernaux *vna; 3733 uint8_t *buf, *end, *buf2; 3734 const char *name; 3735 int elferr, i, j; 3736 3737 if ((s = re->vn_s) == NULL) 3738 return; 3739 if (s->link >= re->shnum) 3740 return; 3741 3742 if (re->ver == NULL) { 3743 re->ver_sz = 16; 3744 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3745 NULL) { 3746 warn("calloc failed"); 3747 return; 3748 } 3749 re->ver[0].name = "*local*"; 3750 re->ver[1].name = "*global*"; 3751 } 3752 3753 if (dump) 3754 printf("\nVersion needed section (%s):\n", s->name); 3755 (void) elf_errno(); 3756 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3757 elferr = elf_errno(); 3758 if (elferr != 0) 3759 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3760 return; 3761 } 3762 if (d->d_size == 0) 3763 return; 3764 3765 buf = d->d_buf; 3766 end = buf + d->d_size; 3767 while (buf + sizeof(Elf_Verneed) <= end) { 3768 vn = (Elf_Verneed *) (uintptr_t) buf; 3769 if (dump) { 3770 printf(" 0x%4.4lx", (unsigned long) 3771 (buf - (uint8_t *)d->d_buf)); 3772 printf(" vn_version: %u vn_file: %s vn_cnt: %u\n", 3773 vn->vn_version, 3774 get_string(re, s->link, vn->vn_file), 3775 vn->vn_cnt); 3776 } 3777 buf2 = buf + vn->vn_aux; 3778 j = 0; 3779 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) { 3780 vna = (Elf32_Vernaux *) (uintptr_t) buf2; 3781 if (dump) 3782 printf(" 0x%4.4lx", (unsigned long) 3783 (buf2 - (uint8_t *)d->d_buf)); 3784 name = get_string(re, s->link, vna->vna_name); 3785 if (dump) 3786 printf(" vna_name: %s vna_flags: %u" 3787 " vna_other: %u\n", name, 3788 vna->vna_flags, vna->vna_other); 3789 SAVE_VERSION_NAME((int)vna->vna_other, name, 0); 3790 if (vna->vna_next == 0) 3791 break; 3792 buf2 += vna->vna_next; 3793 j++; 3794 } 3795 if (vn->vn_next == 0) 3796 break; 3797 buf += vn->vn_next; 3798 } 3799 } 3800 3801 static void 3802 dump_versym(struct readelf *re) 3803 { 3804 int i; 3805 uint16_t vs; 3806 3807 if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL) 3808 return; 3809 printf("\nVersion symbol section (%s):\n", re->vs_s->name); 3810 for (i = 0; i < re->vs_sz; i++) { 3811 if ((i & 3) == 0) { 3812 if (i > 0) 3813 putchar('\n'); 3814 printf(" %03x:", i); 3815 } 3816 vs = re->vs[i] & VERSYM_VERSION; 3817 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3818 warnx("invalid versym version index %u", re->vs[i]); 3819 break; 3820 } 3821 if (re->vs[i] & VERSYM_HIDDEN) 3822 printf(" %3xh %-12s ", vs, 3823 re->ver[re->vs[i] & VERSYM_VERSION].name); 3824 else 3825 printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name); 3826 } 3827 putchar('\n'); 3828 } 3829 3830 static void 3831 dump_ver(struct readelf *re) 3832 { 3833 3834 if (re->vs_s && re->ver && re->vs) 3835 dump_versym(re); 3836 if (re->vd_s) 3837 dump_verdef(re, 1); 3838 if (re->vn_s) 3839 dump_verneed(re, 1); 3840 } 3841 3842 static void 3843 search_ver(struct readelf *re) 3844 { 3845 struct section *s; 3846 Elf_Data *d; 3847 int elferr, i; 3848 3849 for (i = 0; (size_t) i < re->shnum; i++) { 3850 s = &re->sl[i]; 3851 if (s->type == SHT_SUNW_versym) 3852 re->vs_s = s; 3853 if (s->type == SHT_SUNW_verneed) 3854 re->vn_s = s; 3855 if (s->type == SHT_SUNW_verdef) 3856 re->vd_s = s; 3857 } 3858 if (re->vd_s) 3859 dump_verdef(re, 0); 3860 if (re->vn_s) 3861 dump_verneed(re, 0); 3862 if (re->vs_s && re->ver != NULL) { 3863 (void) elf_errno(); 3864 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) { 3865 elferr = elf_errno(); 3866 if (elferr != 0) 3867 warnx("elf_getdata failed: %s", 3868 elf_errmsg(elferr)); 3869 return; 3870 } 3871 if (d->d_size == 0) 3872 return; 3873 re->vs = d->d_buf; 3874 re->vs_sz = d->d_size / sizeof(Elf32_Half); 3875 } 3876 } 3877 3878 #undef Elf_Verdef 3879 #undef Elf_Verdaux 3880 #undef Elf_Verneed 3881 #undef Elf_Vernaux 3882 #undef SAVE_VERSION_NAME 3883 3884 /* 3885 * Elf32_Lib and Elf64_Lib are identical. 3886 */ 3887 #define Elf_Lib Elf32_Lib 3888 3889 static void 3890 dump_liblist(struct readelf *re) 3891 { 3892 struct section *s; 3893 struct tm *t; 3894 time_t ti; 3895 char tbuf[20]; 3896 Elf_Data *d; 3897 Elf_Lib *lib; 3898 int i, j, k, elferr, first, len; 3899 3900 for (i = 0; (size_t) i < re->shnum; i++) { 3901 s = &re->sl[i]; 3902 if (s->type != SHT_GNU_LIBLIST) 3903 continue; 3904 if (s->link >= re->shnum) 3905 continue; 3906 (void) elf_errno(); 3907 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3908 elferr = elf_errno(); 3909 if (elferr != 0) 3910 warnx("elf_getdata failed: %s", 3911 elf_errmsg(elferr)); 3912 continue; 3913 } 3914 if (d->d_size <= 0) 3915 continue; 3916 lib = d->d_buf; 3917 if (!get_ent_count(s, &len)) 3918 continue; 3919 printf("\nLibrary list section '%s' ", s->name); 3920 printf("contains %d entries:\n", len); 3921 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp", 3922 "Checksum", "Version", "Flags"); 3923 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) { 3924 printf("%3d: ", j); 3925 printf("%-20.20s ", 3926 get_string(re, s->link, lib->l_name)); 3927 ti = lib->l_time_stamp; 3928 t = gmtime(&ti); 3929 snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d" 3930 ":%2d", t->tm_year + 1900, t->tm_mon + 1, 3931 t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec); 3932 printf("%-19.19s ", tbuf); 3933 printf("0x%08x ", lib->l_checksum); 3934 printf("%-7d %#x", lib->l_version, lib->l_flags); 3935 if (lib->l_flags != 0) { 3936 first = 1; 3937 putchar('('); 3938 for (k = 0; l_flag[k].name != NULL; k++) { 3939 if ((l_flag[k].value & lib->l_flags) == 3940 0) 3941 continue; 3942 if (!first) 3943 putchar(','); 3944 else 3945 first = 0; 3946 printf("%s", l_flag[k].name); 3947 } 3948 putchar(')'); 3949 } 3950 putchar('\n'); 3951 lib++; 3952 } 3953 } 3954 } 3955 3956 #undef Elf_Lib 3957 3958 static void 3959 dump_section_groups(struct readelf *re) 3960 { 3961 struct section *s; 3962 const char *symname; 3963 Elf_Data *d; 3964 uint32_t *w; 3965 int i, j, elferr; 3966 size_t n; 3967 3968 for (i = 0; (size_t) i < re->shnum; i++) { 3969 s = &re->sl[i]; 3970 if (s->type != SHT_GROUP) 3971 continue; 3972 if (s->link >= re->shnum) 3973 continue; 3974 (void) elf_errno(); 3975 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3976 elferr = elf_errno(); 3977 if (elferr != 0) 3978 warnx("elf_getdata failed: %s", 3979 elf_errmsg(elferr)); 3980 continue; 3981 } 3982 if (d->d_size <= 0) 3983 continue; 3984 3985 w = d->d_buf; 3986 3987 /* We only support COMDAT section. */ 3988 #ifndef GRP_COMDAT 3989 #define GRP_COMDAT 0x1 3990 #endif 3991 if ((*w++ & GRP_COMDAT) == 0) 3992 return; 3993 3994 if (s->entsize == 0) 3995 s->entsize = 4; 3996 3997 symname = get_symbol_name(re, s->link, s->info); 3998 n = s->sz / s->entsize; 3999 if (n-- < 1) 4000 return; 4001 4002 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju" 4003 " sections:\n", i, s->name, symname, (uintmax_t)n); 4004 printf(" %-10.10s %s\n", "[Index]", "Name"); 4005 for (j = 0; (size_t) j < n; j++, w++) { 4006 if (*w >= re->shnum) { 4007 warnx("invalid section index: %u", *w); 4008 continue; 4009 } 4010 printf(" [%5u] %s\n", *w, re->sl[*w].name); 4011 } 4012 } 4013 } 4014 4015 static uint8_t * 4016 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe) 4017 { 4018 uint64_t val; 4019 4020 /* 4021 * According to ARM EABI: For tags > 32, even numbered tags have 4022 * a ULEB128 param and odd numbered ones have NUL-terminated 4023 * string param. This rule probably also applies for tags <= 32 4024 * if the object arch is not ARM. 4025 */ 4026 4027 printf(" Tag_unknown_%ju: ", (uintmax_t) tag); 4028 4029 if (tag & 1) { 4030 printf("%s\n", (char *) p); 4031 p += strlen((char *) p) + 1; 4032 } else { 4033 val = _decode_uleb128(&p, pe); 4034 printf("%ju\n", (uintmax_t) val); 4035 } 4036 4037 return (p); 4038 } 4039 4040 static uint8_t * 4041 dump_compatibility_tag(uint8_t *p, uint8_t *pe) 4042 { 4043 uint64_t val; 4044 4045 val = _decode_uleb128(&p, pe); 4046 printf("flag = %ju, vendor = %s\n", (uintmax_t) val, p); 4047 p += strlen((char *) p) + 1; 4048 4049 return (p); 4050 } 4051 4052 static void 4053 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4054 { 4055 uint64_t tag, val; 4056 size_t i; 4057 int found, desc; 4058 4059 (void) re; 4060 4061 while (p < pe) { 4062 tag = _decode_uleb128(&p, pe); 4063 found = desc = 0; 4064 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]); 4065 i++) { 4066 if (tag == aeabi_tags[i].tag) { 4067 found = 1; 4068 printf(" %s: ", aeabi_tags[i].s_tag); 4069 if (aeabi_tags[i].get_desc) { 4070 desc = 1; 4071 val = _decode_uleb128(&p, pe); 4072 printf("%s\n", 4073 aeabi_tags[i].get_desc(val)); 4074 } 4075 break; 4076 } 4077 if (tag < aeabi_tags[i].tag) 4078 break; 4079 } 4080 if (!found) { 4081 p = dump_unknown_tag(tag, p, pe); 4082 continue; 4083 } 4084 if (desc) 4085 continue; 4086 4087 switch (tag) { 4088 case 4: /* Tag_CPU_raw_name */ 4089 case 5: /* Tag_CPU_name */ 4090 case 67: /* Tag_conformance */ 4091 printf("%s\n", (char *) p); 4092 p += strlen((char *) p) + 1; 4093 break; 4094 case 32: /* Tag_compatibility */ 4095 p = dump_compatibility_tag(p, pe); 4096 break; 4097 case 64: /* Tag_nodefaults */ 4098 /* ignored, written as 0. */ 4099 (void) _decode_uleb128(&p, pe); 4100 printf("True\n"); 4101 break; 4102 case 65: /* Tag_also_compatible_with */ 4103 val = _decode_uleb128(&p, pe); 4104 /* Must be Tag_CPU_arch */ 4105 if (val != 6) { 4106 printf("unknown\n"); 4107 break; 4108 } 4109 val = _decode_uleb128(&p, pe); 4110 printf("%s\n", aeabi_cpu_arch(val)); 4111 /* Skip NUL terminator. */ 4112 p++; 4113 break; 4114 default: 4115 putchar('\n'); 4116 break; 4117 } 4118 } 4119 } 4120 4121 #ifndef Tag_GNU_MIPS_ABI_FP 4122 #define Tag_GNU_MIPS_ABI_FP 4 4123 #endif 4124 4125 static void 4126 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4127 { 4128 uint64_t tag, val; 4129 4130 (void) re; 4131 4132 while (p < pe) { 4133 tag = _decode_uleb128(&p, pe); 4134 switch (tag) { 4135 case Tag_GNU_MIPS_ABI_FP: 4136 val = _decode_uleb128(&p, pe); 4137 printf(" Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val)); 4138 break; 4139 case 32: /* Tag_compatibility */ 4140 p = dump_compatibility_tag(p, pe); 4141 break; 4142 default: 4143 p = dump_unknown_tag(tag, p, pe); 4144 break; 4145 } 4146 } 4147 } 4148 4149 #ifndef Tag_GNU_Power_ABI_FP 4150 #define Tag_GNU_Power_ABI_FP 4 4151 #endif 4152 4153 #ifndef Tag_GNU_Power_ABI_Vector 4154 #define Tag_GNU_Power_ABI_Vector 8 4155 #endif 4156 4157 static void 4158 dump_ppc_attributes(uint8_t *p, uint8_t *pe) 4159 { 4160 uint64_t tag, val; 4161 4162 while (p < pe) { 4163 tag = _decode_uleb128(&p, pe); 4164 switch (tag) { 4165 case Tag_GNU_Power_ABI_FP: 4166 val = _decode_uleb128(&p, pe); 4167 printf(" Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val)); 4168 break; 4169 case Tag_GNU_Power_ABI_Vector: 4170 val = _decode_uleb128(&p, pe); 4171 printf(" Tag_GNU_Power_ABI_Vector: %s\n", 4172 ppc_abi_vector(val)); 4173 break; 4174 case 32: /* Tag_compatibility */ 4175 p = dump_compatibility_tag(p, pe); 4176 break; 4177 default: 4178 p = dump_unknown_tag(tag, p, pe); 4179 break; 4180 } 4181 } 4182 } 4183 4184 static void 4185 dump_attributes(struct readelf *re) 4186 { 4187 struct section *s; 4188 Elf_Data *d; 4189 uint8_t *p, *pe, *sp; 4190 size_t len, seclen, nlen, sublen; 4191 uint64_t val; 4192 int tag, i, elferr; 4193 4194 for (i = 0; (size_t) i < re->shnum; i++) { 4195 s = &re->sl[i]; 4196 if (s->type != SHT_GNU_ATTRIBUTES && 4197 (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3)) 4198 continue; 4199 (void) elf_errno(); 4200 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4201 elferr = elf_errno(); 4202 if (elferr != 0) 4203 warnx("elf_rawdata failed: %s", 4204 elf_errmsg(elferr)); 4205 continue; 4206 } 4207 if (d->d_size <= 0) 4208 continue; 4209 p = d->d_buf; 4210 pe = p + d->d_size; 4211 if (*p != 'A') { 4212 printf("Unknown Attribute Section Format: %c\n", 4213 (char) *p); 4214 continue; 4215 } 4216 len = d->d_size - 1; 4217 p++; 4218 while (len > 0) { 4219 if (len < 4) { 4220 warnx("truncated attribute section length"); 4221 return; 4222 } 4223 seclen = re->dw_decode(&p, 4); 4224 if (seclen > len) { 4225 warnx("invalid attribute section length"); 4226 return; 4227 } 4228 len -= seclen; 4229 nlen = strlen((char *) p) + 1; 4230 if (nlen + 4 > seclen) { 4231 warnx("invalid attribute section name"); 4232 return; 4233 } 4234 printf("Attribute Section: %s\n", (char *) p); 4235 p += nlen; 4236 seclen -= nlen + 4; 4237 while (seclen > 0) { 4238 sp = p; 4239 tag = *p++; 4240 sublen = re->dw_decode(&p, 4); 4241 if (sublen > seclen) { 4242 warnx("invalid attribute sub-section" 4243 " length"); 4244 return; 4245 } 4246 seclen -= sublen; 4247 printf("%s", top_tag(tag)); 4248 if (tag == 2 || tag == 3) { 4249 putchar(':'); 4250 for (;;) { 4251 val = _decode_uleb128(&p, pe); 4252 if (val == 0) 4253 break; 4254 printf(" %ju", (uintmax_t) val); 4255 } 4256 } 4257 putchar('\n'); 4258 if (re->ehdr.e_machine == EM_ARM && 4259 s->type == SHT_LOPROC + 3) 4260 dump_arm_attributes(re, p, sp + sublen); 4261 else if (re->ehdr.e_machine == EM_MIPS || 4262 re->ehdr.e_machine == EM_MIPS_RS3_LE) 4263 dump_mips_attributes(re, p, 4264 sp + sublen); 4265 else if (re->ehdr.e_machine == EM_PPC) 4266 dump_ppc_attributes(p, sp + sublen); 4267 p = sp + sublen; 4268 } 4269 } 4270 } 4271 } 4272 4273 static void 4274 dump_mips_specific_info(struct readelf *re) 4275 { 4276 struct section *s; 4277 int i; 4278 4279 s = NULL; 4280 for (i = 0; (size_t) i < re->shnum; i++) { 4281 s = &re->sl[i]; 4282 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") || 4283 (s->type == SHT_MIPS_OPTIONS))) { 4284 dump_mips_options(re, s); 4285 } 4286 } 4287 4288 if (s->name != NULL && (!strcmp(s->name, ".MIPS.abiflags") || 4289 (s->type == SHT_MIPS_ABIFLAGS))) 4290 dump_mips_abiflags(re, s); 4291 4292 /* 4293 * Dump .reginfo if present (although it will be ignored by an OS if a 4294 * .MIPS.options section is present, according to SGI mips64 spec). 4295 */ 4296 for (i = 0; (size_t) i < re->shnum; i++) { 4297 s = &re->sl[i]; 4298 if (s->name != NULL && (!strcmp(s->name, ".reginfo") || 4299 (s->type == SHT_MIPS_REGINFO))) 4300 dump_mips_reginfo(re, s); 4301 } 4302 } 4303 4304 static void 4305 dump_mips_abiflags(struct readelf *re, struct section *s) 4306 { 4307 Elf_Data *d; 4308 uint8_t *p; 4309 int elferr; 4310 uint32_t isa_ext, ases, flags1, flags2; 4311 uint16_t version; 4312 uint8_t isa_level, isa_rev, gpr_size, cpr1_size, cpr2_size, fp_abi; 4313 4314 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4315 elferr = elf_errno(); 4316 if (elferr != 0) 4317 warnx("elf_rawdata failed: %s", 4318 elf_errmsg(elferr)); 4319 return; 4320 } 4321 if (d->d_size != 24) { 4322 warnx("invalid MIPS abiflags section size"); 4323 return; 4324 } 4325 4326 p = d->d_buf; 4327 version = re->dw_decode(&p, 2); 4328 printf("MIPS ABI Flags Version: %u", version); 4329 if (version != 0) { 4330 printf(" (unknown)\n\n"); 4331 return; 4332 } 4333 printf("\n\n"); 4334 4335 isa_level = re->dw_decode(&p, 1); 4336 isa_rev = re->dw_decode(&p, 1); 4337 gpr_size = re->dw_decode(&p, 1); 4338 cpr1_size = re->dw_decode(&p, 1); 4339 cpr2_size = re->dw_decode(&p, 1); 4340 fp_abi = re->dw_decode(&p, 1); 4341 isa_ext = re->dw_decode(&p, 4); 4342 ases = re->dw_decode(&p, 4); 4343 flags1 = re->dw_decode(&p, 4); 4344 flags2 = re->dw_decode(&p, 4); 4345 4346 printf("ISA: "); 4347 if (isa_rev <= 1) 4348 printf("MIPS%u\n", isa_level); 4349 else 4350 printf("MIPS%ur%u\n", isa_level, isa_rev); 4351 printf("GPR size: %d\n", get_mips_register_size(gpr_size)); 4352 printf("CPR1 size: %d\n", get_mips_register_size(cpr1_size)); 4353 printf("CPR2 size: %d\n", get_mips_register_size(cpr2_size)); 4354 printf("FP ABI: "); 4355 switch (fp_abi) { 4356 case 3: 4357 printf("Soft float"); 4358 break; 4359 default: 4360 printf("%u", fp_abi); 4361 break; 4362 } 4363 printf("\nISA Extension: %u\n", isa_ext); 4364 printf("ASEs: %u\n", ases); 4365 printf("FLAGS 1: %08x\n", flags1); 4366 printf("FLAGS 2: %08x\n", flags2); 4367 } 4368 4369 static int 4370 get_mips_register_size(uint8_t flag) 4371 { 4372 switch (flag) { 4373 case 0: return 0; 4374 case 1: return 32; 4375 case 2: return 64; 4376 case 3: return 128; 4377 default: return -1; 4378 } 4379 } 4380 static void 4381 dump_mips_reginfo(struct readelf *re, struct section *s) 4382 { 4383 Elf_Data *d; 4384 int elferr, len; 4385 4386 (void) elf_errno(); 4387 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4388 elferr = elf_errno(); 4389 if (elferr != 0) 4390 warnx("elf_rawdata failed: %s", 4391 elf_errmsg(elferr)); 4392 return; 4393 } 4394 if (d->d_size <= 0) 4395 return; 4396 if (!get_ent_count(s, &len)) 4397 return; 4398 4399 printf("\nSection '%s' contains %d entries:\n", s->name, len); 4400 dump_mips_odk_reginfo(re, d->d_buf, d->d_size); 4401 } 4402 4403 static void 4404 dump_mips_options(struct readelf *re, struct section *s) 4405 { 4406 Elf_Data *d; 4407 uint32_t info; 4408 uint16_t sndx; 4409 uint8_t *p, *pe; 4410 uint8_t kind, size; 4411 int elferr; 4412 4413 (void) elf_errno(); 4414 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4415 elferr = elf_errno(); 4416 if (elferr != 0) 4417 warnx("elf_rawdata failed: %s", 4418 elf_errmsg(elferr)); 4419 return; 4420 } 4421 if (d->d_size == 0) 4422 return; 4423 4424 printf("\nSection %s contains:\n", s->name); 4425 p = d->d_buf; 4426 pe = p + d->d_size; 4427 while (p < pe) { 4428 if (pe - p < 8) { 4429 warnx("Truncated MIPS option header"); 4430 return; 4431 } 4432 kind = re->dw_decode(&p, 1); 4433 size = re->dw_decode(&p, 1); 4434 sndx = re->dw_decode(&p, 2); 4435 info = re->dw_decode(&p, 4); 4436 if (size < 8 || size - 8 > pe - p) { 4437 warnx("Malformed MIPS option header"); 4438 return; 4439 } 4440 size -= 8; 4441 switch (kind) { 4442 case ODK_REGINFO: 4443 dump_mips_odk_reginfo(re, p, size); 4444 break; 4445 case ODK_EXCEPTIONS: 4446 printf(" EXCEPTIONS FPU_MIN: %#x\n", 4447 info & OEX_FPU_MIN); 4448 printf("%11.11s FPU_MAX: %#x\n", "", 4449 info & OEX_FPU_MAX); 4450 dump_mips_option_flags("", mips_exceptions_option, 4451 info); 4452 break; 4453 case ODK_PAD: 4454 printf(" %-10.10s section: %ju\n", "OPAD", 4455 (uintmax_t) sndx); 4456 dump_mips_option_flags("", mips_pad_option, info); 4457 break; 4458 case ODK_HWPATCH: 4459 dump_mips_option_flags("HWPATCH", mips_hwpatch_option, 4460 info); 4461 break; 4462 case ODK_HWAND: 4463 dump_mips_option_flags("HWAND", mips_hwa_option, info); 4464 break; 4465 case ODK_HWOR: 4466 dump_mips_option_flags("HWOR", mips_hwo_option, info); 4467 break; 4468 case ODK_FILL: 4469 printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info); 4470 break; 4471 case ODK_TAGS: 4472 printf(" %-10.10s\n", "TAGS"); 4473 break; 4474 case ODK_GP_GROUP: 4475 printf(" %-10.10s GP group number: %#x\n", "GP_GROUP", 4476 info & 0xFFFF); 4477 if (info & 0x10000) 4478 printf(" %-10.10s GP group is " 4479 "self-contained\n", ""); 4480 break; 4481 case ODK_IDENT: 4482 printf(" %-10.10s default GP group number: %#x\n", 4483 "IDENT", info & 0xFFFF); 4484 if (info & 0x10000) 4485 printf(" %-10.10s default GP group is " 4486 "self-contained\n", ""); 4487 break; 4488 case ODK_PAGESIZE: 4489 printf(" %-10.10s\n", "PAGESIZE"); 4490 break; 4491 default: 4492 break; 4493 } 4494 p += size; 4495 } 4496 } 4497 4498 static void 4499 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info) 4500 { 4501 int first; 4502 4503 first = 1; 4504 for (; opt->desc != NULL; opt++) { 4505 if (info & opt->flag) { 4506 printf(" %-10.10s %s\n", first ? name : "", 4507 opt->desc); 4508 first = 0; 4509 } 4510 } 4511 } 4512 4513 static void 4514 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz) 4515 { 4516 uint32_t ri_gprmask; 4517 uint32_t ri_cprmask[4]; 4518 uint64_t ri_gp_value; 4519 uint8_t *pe; 4520 int i; 4521 4522 pe = p + sz; 4523 while (p < pe) { 4524 ri_gprmask = re->dw_decode(&p, 4); 4525 /* Skip ri_pad padding field for mips64. */ 4526 if (re->ec == ELFCLASS64) 4527 re->dw_decode(&p, 4); 4528 for (i = 0; i < 4; i++) 4529 ri_cprmask[i] = re->dw_decode(&p, 4); 4530 if (re->ec == ELFCLASS32) 4531 ri_gp_value = re->dw_decode(&p, 4); 4532 else 4533 ri_gp_value = re->dw_decode(&p, 8); 4534 printf(" %s ", option_kind(ODK_REGINFO)); 4535 printf("ri_gprmask: 0x%08jx\n", (uintmax_t) ri_gprmask); 4536 for (i = 0; i < 4; i++) 4537 printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i, 4538 (uintmax_t) ri_cprmask[i]); 4539 printf("%12.12s", ""); 4540 printf("ri_gp_value: %#jx\n", (uintmax_t) ri_gp_value); 4541 } 4542 } 4543 4544 static void 4545 dump_arch_specific_info(struct readelf *re) 4546 { 4547 4548 dump_liblist(re); 4549 dump_attributes(re); 4550 4551 switch (re->ehdr.e_machine) { 4552 case EM_MIPS: 4553 case EM_MIPS_RS3_LE: 4554 dump_mips_specific_info(re); 4555 default: 4556 break; 4557 } 4558 } 4559 4560 static const char * 4561 dwarf_regname(struct readelf *re, unsigned int num) 4562 { 4563 static char rx[32]; 4564 const char *rn; 4565 4566 if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL) 4567 return (rn); 4568 4569 snprintf(rx, sizeof(rx), "r%u", num); 4570 4571 return (rx); 4572 } 4573 4574 static void 4575 dump_dwarf_line(struct readelf *re) 4576 { 4577 struct section *s; 4578 Dwarf_Die die; 4579 Dwarf_Error de; 4580 Dwarf_Half tag, version, pointer_size; 4581 Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize; 4582 Dwarf_Small minlen, defstmt, lrange, opbase, oplen; 4583 Elf_Data *d; 4584 char *pn; 4585 uint64_t address, file, line, column, isa, opsize, udelta; 4586 int64_t sdelta; 4587 uint8_t *p, *pe; 4588 int8_t lbase; 4589 int i, is_stmt, dwarf_size, elferr, ret; 4590 4591 printf("\nDump of debug contents of section .debug_line:\n"); 4592 4593 s = NULL; 4594 for (i = 0; (size_t) i < re->shnum; i++) { 4595 s = &re->sl[i]; 4596 if (s->name != NULL && !strcmp(s->name, ".debug_line")) 4597 break; 4598 } 4599 if ((size_t) i >= re->shnum) 4600 return; 4601 4602 (void) elf_errno(); 4603 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4604 elferr = elf_errno(); 4605 if (elferr != 0) 4606 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 4607 return; 4608 } 4609 if (d->d_size <= 0) 4610 return; 4611 4612 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4613 NULL, &de)) == DW_DLV_OK) { 4614 die = NULL; 4615 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) { 4616 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4617 warnx("dwarf_tag failed: %s", 4618 dwarf_errmsg(de)); 4619 return; 4620 } 4621 /* XXX: What about DW_TAG_partial_unit? */ 4622 if (tag == DW_TAG_compile_unit) 4623 break; 4624 } 4625 if (die == NULL) { 4626 warnx("could not find DW_TAG_compile_unit die"); 4627 return; 4628 } 4629 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset, 4630 &de) != DW_DLV_OK) 4631 continue; 4632 4633 length = re->dw_read(d, &offset, 4); 4634 if (length == 0xffffffff) { 4635 dwarf_size = 8; 4636 length = re->dw_read(d, &offset, 8); 4637 } else 4638 dwarf_size = 4; 4639 4640 if (length > d->d_size - offset) { 4641 warnx("invalid .dwarf_line section"); 4642 continue; 4643 } 4644 4645 endoff = offset + length; 4646 pe = (uint8_t *) d->d_buf + endoff; 4647 version = re->dw_read(d, &offset, 2); 4648 hdrlen = re->dw_read(d, &offset, dwarf_size); 4649 minlen = re->dw_read(d, &offset, 1); 4650 defstmt = re->dw_read(d, &offset, 1); 4651 lbase = re->dw_read(d, &offset, 1); 4652 lrange = re->dw_read(d, &offset, 1); 4653 opbase = re->dw_read(d, &offset, 1); 4654 4655 printf("\n"); 4656 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 4657 printf(" DWARF version:\t\t%u\n", version); 4658 printf(" Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen); 4659 printf(" Minimum Instruction Length:\t%u\n", minlen); 4660 printf(" Initial value of 'is_stmt':\t%u\n", defstmt); 4661 printf(" Line Base:\t\t\t%d\n", lbase); 4662 printf(" Line Range:\t\t\t%u\n", lrange); 4663 printf(" Opcode Base:\t\t\t%u\n", opbase); 4664 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de); 4665 printf(" (Pointer size:\t\t%u)\n", pointer_size); 4666 4667 printf("\n"); 4668 printf(" Opcodes:\n"); 4669 for (i = 1; i < opbase; i++) { 4670 oplen = re->dw_read(d, &offset, 1); 4671 printf(" Opcode %d has %u args\n", i, oplen); 4672 } 4673 4674 printf("\n"); 4675 printf(" The Directory Table:\n"); 4676 p = (uint8_t *) d->d_buf + offset; 4677 while (*p != '\0') { 4678 printf(" %s\n", (char *) p); 4679 p += strlen((char *) p) + 1; 4680 } 4681 4682 p++; 4683 printf("\n"); 4684 printf(" The File Name Table:\n"); 4685 printf(" Entry\tDir\tTime\tSize\tName\n"); 4686 i = 0; 4687 while (*p != '\0') { 4688 i++; 4689 pn = (char *) p; 4690 p += strlen(pn) + 1; 4691 dirndx = _decode_uleb128(&p, pe); 4692 mtime = _decode_uleb128(&p, pe); 4693 fsize = _decode_uleb128(&p, pe); 4694 printf(" %d\t%ju\t%ju\t%ju\t%s\n", i, 4695 (uintmax_t) dirndx, (uintmax_t) mtime, 4696 (uintmax_t) fsize, pn); 4697 } 4698 4699 #define RESET_REGISTERS \ 4700 do { \ 4701 address = 0; \ 4702 file = 1; \ 4703 line = 1; \ 4704 column = 0; \ 4705 is_stmt = defstmt; \ 4706 } while(0) 4707 4708 #define LINE(x) (lbase + (((x) - opbase) % lrange)) 4709 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen) 4710 4711 p++; 4712 printf("\n"); 4713 printf(" Line Number Statements:\n"); 4714 4715 RESET_REGISTERS; 4716 4717 while (p < pe) { 4718 4719 if (*p == 0) { 4720 /* 4721 * Extended Opcodes. 4722 */ 4723 p++; 4724 opsize = _decode_uleb128(&p, pe); 4725 printf(" Extended opcode %u: ", *p); 4726 switch (*p) { 4727 case DW_LNE_end_sequence: 4728 p++; 4729 RESET_REGISTERS; 4730 printf("End of Sequence\n"); 4731 break; 4732 case DW_LNE_set_address: 4733 p++; 4734 address = re->dw_decode(&p, 4735 pointer_size); 4736 printf("set Address to %#jx\n", 4737 (uintmax_t) address); 4738 break; 4739 case DW_LNE_define_file: 4740 p++; 4741 pn = (char *) p; 4742 p += strlen(pn) + 1; 4743 dirndx = _decode_uleb128(&p, pe); 4744 mtime = _decode_uleb128(&p, pe); 4745 fsize = _decode_uleb128(&p, pe); 4746 printf("define new file: %s\n", pn); 4747 break; 4748 default: 4749 /* Unrecognized extened opcodes. */ 4750 p += opsize; 4751 printf("unknown opcode\n"); 4752 } 4753 } else if (*p > 0 && *p < opbase) { 4754 /* 4755 * Standard Opcodes. 4756 */ 4757 switch(*p++) { 4758 case DW_LNS_copy: 4759 printf(" Copy\n"); 4760 break; 4761 case DW_LNS_advance_pc: 4762 udelta = _decode_uleb128(&p, pe) * 4763 minlen; 4764 address += udelta; 4765 printf(" Advance PC by %ju to %#jx\n", 4766 (uintmax_t) udelta, 4767 (uintmax_t) address); 4768 break; 4769 case DW_LNS_advance_line: 4770 sdelta = _decode_sleb128(&p, pe); 4771 line += sdelta; 4772 printf(" Advance Line by %jd to %ju\n", 4773 (intmax_t) sdelta, 4774 (uintmax_t) line); 4775 break; 4776 case DW_LNS_set_file: 4777 file = _decode_uleb128(&p, pe); 4778 printf(" Set File to %ju\n", 4779 (uintmax_t) file); 4780 break; 4781 case DW_LNS_set_column: 4782 column = _decode_uleb128(&p, pe); 4783 printf(" Set Column to %ju\n", 4784 (uintmax_t) column); 4785 break; 4786 case DW_LNS_negate_stmt: 4787 is_stmt = !is_stmt; 4788 printf(" Set is_stmt to %d\n", is_stmt); 4789 break; 4790 case DW_LNS_set_basic_block: 4791 printf(" Set basic block flag\n"); 4792 break; 4793 case DW_LNS_const_add_pc: 4794 address += ADDRESS(255); 4795 printf(" Advance PC by constant %ju" 4796 " to %#jx\n", 4797 (uintmax_t) ADDRESS(255), 4798 (uintmax_t) address); 4799 break; 4800 case DW_LNS_fixed_advance_pc: 4801 udelta = re->dw_decode(&p, 2); 4802 address += udelta; 4803 printf(" Advance PC by fixed value " 4804 "%ju to %#jx\n", 4805 (uintmax_t) udelta, 4806 (uintmax_t) address); 4807 break; 4808 case DW_LNS_set_prologue_end: 4809 printf(" Set prologue end flag\n"); 4810 break; 4811 case DW_LNS_set_epilogue_begin: 4812 printf(" Set epilogue begin flag\n"); 4813 break; 4814 case DW_LNS_set_isa: 4815 isa = _decode_uleb128(&p, pe); 4816 printf(" Set isa to %ju\n", 4817 (uintmax_t) isa); 4818 break; 4819 default: 4820 /* Unrecognized extended opcodes. */ 4821 printf(" Unknown extended opcode %u\n", 4822 *(p - 1)); 4823 break; 4824 } 4825 4826 } else { 4827 /* 4828 * Special Opcodes. 4829 */ 4830 line += LINE(*p); 4831 address += ADDRESS(*p); 4832 printf(" Special opcode %u: advance Address " 4833 "by %ju to %#jx and Line by %jd to %ju\n", 4834 *p - opbase, (uintmax_t) ADDRESS(*p), 4835 (uintmax_t) address, (intmax_t) LINE(*p), 4836 (uintmax_t) line); 4837 p++; 4838 } 4839 4840 4841 } 4842 } 4843 if (ret == DW_DLV_ERROR) 4844 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 4845 4846 #undef RESET_REGISTERS 4847 #undef LINE 4848 #undef ADDRESS 4849 } 4850 4851 static void 4852 dump_dwarf_line_decoded(struct readelf *re) 4853 { 4854 Dwarf_Die die; 4855 Dwarf_Line *linebuf, ln; 4856 Dwarf_Addr lineaddr; 4857 Dwarf_Signed linecount, srccount; 4858 Dwarf_Unsigned lineno, fn; 4859 Dwarf_Error de; 4860 const char *dir, *file; 4861 char **srcfiles; 4862 int i, ret; 4863 4864 printf("Decoded dump of debug contents of section .debug_line:\n\n"); 4865 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4866 NULL, &de)) == DW_DLV_OK) { 4867 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK) 4868 continue; 4869 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) != 4870 DW_DLV_OK) 4871 file = NULL; 4872 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) != 4873 DW_DLV_OK) 4874 dir = NULL; 4875 printf("CU: "); 4876 if (dir && file && file[0] != '/') 4877 printf("%s/", dir); 4878 if (file) 4879 printf("%s", file); 4880 putchar('\n'); 4881 printf("%-37s %11s %s\n", "Filename", "Line Number", 4882 "Starting Address"); 4883 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK) 4884 continue; 4885 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK) 4886 continue; 4887 for (i = 0; i < linecount; i++) { 4888 ln = linebuf[i]; 4889 if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK) 4890 continue; 4891 if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK) 4892 continue; 4893 if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK) 4894 continue; 4895 printf("%-37s %11ju %#18jx\n", 4896 basename(srcfiles[fn - 1]), (uintmax_t) lineno, 4897 (uintmax_t) lineaddr); 4898 } 4899 putchar('\n'); 4900 } 4901 } 4902 4903 static void 4904 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level) 4905 { 4906 Dwarf_Attribute *attr_list; 4907 Dwarf_Die ret_die; 4908 Dwarf_Off dieoff, cuoff, culen, attroff; 4909 Dwarf_Unsigned ate, lang, v_udata, v_sig; 4910 Dwarf_Signed attr_count, v_sdata; 4911 Dwarf_Off v_off; 4912 Dwarf_Addr v_addr; 4913 Dwarf_Half tag, attr, form; 4914 Dwarf_Block *v_block; 4915 Dwarf_Bool v_bool, is_info; 4916 Dwarf_Sig8 v_sig8; 4917 Dwarf_Error de; 4918 Dwarf_Ptr v_expr; 4919 const char *tag_str, *attr_str, *ate_str, *lang_str; 4920 char unk_tag[32], unk_attr[32]; 4921 char *v_str; 4922 uint8_t *b, *p; 4923 int i, j, abc, ret; 4924 4925 if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) { 4926 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de)); 4927 goto cont_search; 4928 } 4929 4930 printf(" <%d><%jx>: ", level, (uintmax_t) dieoff); 4931 4932 if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) { 4933 warnx("dwarf_die_CU_offset_range failed: %s", 4934 dwarf_errmsg(de)); 4935 cuoff = 0; 4936 } 4937 4938 abc = dwarf_die_abbrev_code(die); 4939 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4940 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 4941 goto cont_search; 4942 } 4943 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 4944 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag); 4945 tag_str = unk_tag; 4946 } 4947 4948 printf("Abbrev Number: %d (%s)\n", abc, tag_str); 4949 4950 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 4951 DW_DLV_OK) { 4952 if (ret == DW_DLV_ERROR) 4953 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 4954 goto cont_search; 4955 } 4956 4957 for (i = 0; i < attr_count; i++) { 4958 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 4959 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 4960 continue; 4961 } 4962 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 4963 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 4964 continue; 4965 } 4966 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) { 4967 snprintf(unk_attr, sizeof(unk_attr), 4968 "[Unknown AT: %#x]", attr); 4969 attr_str = unk_attr; 4970 } 4971 if (dwarf_attroffset(attr_list[i], &attroff, &de) != 4972 DW_DLV_OK) { 4973 warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de)); 4974 attroff = 0; 4975 } 4976 printf(" <%jx> %-18s: ", (uintmax_t) attroff, attr_str); 4977 switch (form) { 4978 case DW_FORM_ref_addr: 4979 case DW_FORM_sec_offset: 4980 if (dwarf_global_formref(attr_list[i], &v_off, &de) != 4981 DW_DLV_OK) { 4982 warnx("dwarf_global_formref failed: %s", 4983 dwarf_errmsg(de)); 4984 continue; 4985 } 4986 if (form == DW_FORM_ref_addr) 4987 printf("<0x%jx>", (uintmax_t) v_off); 4988 else 4989 printf("0x%jx", (uintmax_t) v_off); 4990 break; 4991 4992 case DW_FORM_ref1: 4993 case DW_FORM_ref2: 4994 case DW_FORM_ref4: 4995 case DW_FORM_ref8: 4996 case DW_FORM_ref_udata: 4997 if (dwarf_formref(attr_list[i], &v_off, &de) != 4998 DW_DLV_OK) { 4999 warnx("dwarf_formref failed: %s", 5000 dwarf_errmsg(de)); 5001 continue; 5002 } 5003 v_off += cuoff; 5004 printf("<0x%jx>", (uintmax_t) v_off); 5005 break; 5006 5007 case DW_FORM_addr: 5008 if (dwarf_formaddr(attr_list[i], &v_addr, &de) != 5009 DW_DLV_OK) { 5010 warnx("dwarf_formaddr failed: %s", 5011 dwarf_errmsg(de)); 5012 continue; 5013 } 5014 printf("%#jx", (uintmax_t) v_addr); 5015 break; 5016 5017 case DW_FORM_data1: 5018 case DW_FORM_data2: 5019 case DW_FORM_data4: 5020 case DW_FORM_data8: 5021 case DW_FORM_udata: 5022 if (dwarf_formudata(attr_list[i], &v_udata, &de) != 5023 DW_DLV_OK) { 5024 warnx("dwarf_formudata failed: %s", 5025 dwarf_errmsg(de)); 5026 continue; 5027 } 5028 if (attr == DW_AT_high_pc) 5029 printf("0x%jx", (uintmax_t) v_udata); 5030 else 5031 printf("%ju", (uintmax_t) v_udata); 5032 break; 5033 5034 case DW_FORM_sdata: 5035 if (dwarf_formsdata(attr_list[i], &v_sdata, &de) != 5036 DW_DLV_OK) { 5037 warnx("dwarf_formudata failed: %s", 5038 dwarf_errmsg(de)); 5039 continue; 5040 } 5041 printf("%jd", (intmax_t) v_sdata); 5042 break; 5043 5044 case DW_FORM_flag: 5045 if (dwarf_formflag(attr_list[i], &v_bool, &de) != 5046 DW_DLV_OK) { 5047 warnx("dwarf_formflag failed: %s", 5048 dwarf_errmsg(de)); 5049 continue; 5050 } 5051 printf("%jd", (intmax_t) v_bool); 5052 break; 5053 5054 case DW_FORM_flag_present: 5055 putchar('1'); 5056 break; 5057 5058 case DW_FORM_string: 5059 case DW_FORM_strp: 5060 if (dwarf_formstring(attr_list[i], &v_str, &de) != 5061 DW_DLV_OK) { 5062 warnx("dwarf_formstring failed: %s", 5063 dwarf_errmsg(de)); 5064 continue; 5065 } 5066 if (form == DW_FORM_string) 5067 printf("%s", v_str); 5068 else 5069 printf("(indirect string) %s", v_str); 5070 break; 5071 5072 case DW_FORM_block: 5073 case DW_FORM_block1: 5074 case DW_FORM_block2: 5075 case DW_FORM_block4: 5076 if (dwarf_formblock(attr_list[i], &v_block, &de) != 5077 DW_DLV_OK) { 5078 warnx("dwarf_formblock failed: %s", 5079 dwarf_errmsg(de)); 5080 continue; 5081 } 5082 printf("%ju byte block:", (uintmax_t) v_block->bl_len); 5083 b = v_block->bl_data; 5084 for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++) 5085 printf(" %x", b[j]); 5086 printf("\t("); 5087 dump_dwarf_block(re, v_block->bl_data, v_block->bl_len); 5088 putchar(')'); 5089 break; 5090 5091 case DW_FORM_exprloc: 5092 if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr, 5093 &de) != DW_DLV_OK) { 5094 warnx("dwarf_formexprloc failed: %s", 5095 dwarf_errmsg(de)); 5096 continue; 5097 } 5098 printf("%ju byte block:", (uintmax_t) v_udata); 5099 b = v_expr; 5100 for (j = 0; (Dwarf_Unsigned) j < v_udata; j++) 5101 printf(" %x", b[j]); 5102 printf("\t("); 5103 dump_dwarf_block(re, v_expr, v_udata); 5104 putchar(')'); 5105 break; 5106 5107 case DW_FORM_ref_sig8: 5108 if (dwarf_formsig8(attr_list[i], &v_sig8, &de) != 5109 DW_DLV_OK) { 5110 warnx("dwarf_formsig8 failed: %s", 5111 dwarf_errmsg(de)); 5112 continue; 5113 } 5114 p = (uint8_t *)(uintptr_t) &v_sig8.signature[0]; 5115 v_sig = re->dw_decode(&p, 8); 5116 printf("signature: 0x%jx", (uintmax_t) v_sig); 5117 } 5118 switch (attr) { 5119 case DW_AT_encoding: 5120 if (dwarf_attrval_unsigned(die, attr, &ate, &de) != 5121 DW_DLV_OK) 5122 break; 5123 if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK) 5124 ate_str = "DW_ATE_UNKNOWN"; 5125 printf("\t(%s)", &ate_str[strlen("DW_ATE_")]); 5126 break; 5127 5128 case DW_AT_language: 5129 if (dwarf_attrval_unsigned(die, attr, &lang, &de) != 5130 DW_DLV_OK) 5131 break; 5132 if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK) 5133 break; 5134 printf("\t(%s)", &lang_str[strlen("DW_LANG_")]); 5135 break; 5136 5137 case DW_AT_location: 5138 case DW_AT_string_length: 5139 case DW_AT_return_addr: 5140 case DW_AT_data_member_location: 5141 case DW_AT_frame_base: 5142 case DW_AT_segment: 5143 case DW_AT_static_link: 5144 case DW_AT_use_location: 5145 case DW_AT_vtable_elem_location: 5146 switch (form) { 5147 case DW_FORM_data4: 5148 case DW_FORM_data8: 5149 case DW_FORM_sec_offset: 5150 printf("\t(location list)"); 5151 break; 5152 default: 5153 break; 5154 } 5155 5156 default: 5157 break; 5158 } 5159 putchar('\n'); 5160 } 5161 5162 5163 cont_search: 5164 /* Search children. */ 5165 ret = dwarf_child(die, &ret_die, &de); 5166 if (ret == DW_DLV_ERROR) 5167 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5168 else if (ret == DW_DLV_OK) 5169 dump_dwarf_die(re, ret_die, level + 1); 5170 5171 /* Search sibling. */ 5172 is_info = dwarf_get_die_infotypes_flag(die); 5173 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 5174 if (ret == DW_DLV_ERROR) 5175 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5176 else if (ret == DW_DLV_OK) 5177 dump_dwarf_die(re, ret_die, level); 5178 5179 dwarf_dealloc(re->dbg, die, DW_DLA_DIE); 5180 } 5181 5182 static void 5183 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize, 5184 Dwarf_Half ver) 5185 { 5186 5187 re->cu_psize = psize; 5188 re->cu_osize = osize; 5189 re->cu_ver = ver; 5190 } 5191 5192 static void 5193 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info) 5194 { 5195 struct section *s; 5196 Dwarf_Die die; 5197 Dwarf_Error de; 5198 Dwarf_Half tag, version, pointer_size, off_size; 5199 Dwarf_Off cu_offset, cu_length; 5200 Dwarf_Off aboff; 5201 Dwarf_Unsigned typeoff; 5202 Dwarf_Sig8 sig8; 5203 Dwarf_Unsigned sig; 5204 uint8_t *p; 5205 const char *sn; 5206 int i, ret; 5207 5208 sn = is_info ? ".debug_info" : ".debug_types"; 5209 5210 s = NULL; 5211 for (i = 0; (size_t) i < re->shnum; i++) { 5212 s = &re->sl[i]; 5213 if (s->name != NULL && !strcmp(s->name, sn)) 5214 break; 5215 } 5216 if ((size_t) i >= re->shnum) 5217 return; 5218 5219 do { 5220 printf("\nDump of debug contents of section %s:\n", sn); 5221 5222 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL, 5223 &version, &aboff, &pointer_size, &off_size, NULL, &sig8, 5224 &typeoff, NULL, &de)) == DW_DLV_OK) { 5225 set_cu_context(re, pointer_size, off_size, version); 5226 die = NULL; 5227 while (dwarf_siblingof_b(re->dbg, die, &die, is_info, 5228 &de) == DW_DLV_OK) { 5229 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5230 warnx("dwarf_tag failed: %s", 5231 dwarf_errmsg(de)); 5232 continue; 5233 } 5234 /* XXX: What about DW_TAG_partial_unit? */ 5235 if ((is_info && tag == DW_TAG_compile_unit) || 5236 (!is_info && tag == DW_TAG_type_unit)) 5237 break; 5238 } 5239 if (die == NULL && is_info) { 5240 warnx("could not find DW_TAG_compile_unit " 5241 "die"); 5242 continue; 5243 } else if (die == NULL && !is_info) { 5244 warnx("could not find DW_TAG_type_unit die"); 5245 continue; 5246 } 5247 5248 if (dwarf_die_CU_offset_range(die, &cu_offset, 5249 &cu_length, &de) != DW_DLV_OK) { 5250 warnx("dwarf_die_CU_offset failed: %s", 5251 dwarf_errmsg(de)); 5252 continue; 5253 } 5254 5255 cu_length -= off_size == 4 ? 4 : 12; 5256 5257 sig = 0; 5258 if (!is_info) { 5259 p = (uint8_t *)(uintptr_t) &sig8.signature[0]; 5260 sig = re->dw_decode(&p, 8); 5261 } 5262 5263 printf("\n Type Unit @ offset 0x%jx:\n", 5264 (uintmax_t) cu_offset); 5265 printf(" Length:\t\t%#jx (%d-bit)\n", 5266 (uintmax_t) cu_length, off_size == 4 ? 32 : 64); 5267 printf(" Version:\t\t%u\n", version); 5268 printf(" Abbrev Offset:\t0x%jx\n", 5269 (uintmax_t) aboff); 5270 printf(" Pointer Size:\t%u\n", pointer_size); 5271 if (!is_info) { 5272 printf(" Signature:\t\t0x%016jx\n", 5273 (uintmax_t) sig); 5274 printf(" Type Offset:\t0x%jx\n", 5275 (uintmax_t) typeoff); 5276 } 5277 5278 dump_dwarf_die(re, die, 0); 5279 } 5280 if (ret == DW_DLV_ERROR) 5281 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5282 if (is_info) 5283 break; 5284 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 5285 } 5286 5287 static void 5288 dump_dwarf_abbrev(struct readelf *re) 5289 { 5290 Dwarf_Abbrev ab; 5291 Dwarf_Off aboff, atoff; 5292 Dwarf_Unsigned length, attr_count; 5293 Dwarf_Signed flag, form; 5294 Dwarf_Half tag, attr; 5295 Dwarf_Error de; 5296 const char *tag_str, *attr_str, *form_str; 5297 char unk_tag[32], unk_attr[32], unk_form[32]; 5298 int i, j, ret; 5299 5300 printf("\nContents of section .debug_abbrev:\n\n"); 5301 5302 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff, 5303 NULL, NULL, &de)) == DW_DLV_OK) { 5304 printf(" Number TAG\n"); 5305 i = 0; 5306 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length, 5307 &attr_count, &de)) == DW_DLV_OK) { 5308 if (length == 1) { 5309 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5310 break; 5311 } 5312 aboff += length; 5313 printf("%4d", ++i); 5314 if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) { 5315 warnx("dwarf_get_abbrev_tag failed: %s", 5316 dwarf_errmsg(de)); 5317 goto next_abbrev; 5318 } 5319 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 5320 snprintf(unk_tag, sizeof(unk_tag), 5321 "[Unknown Tag: %#x]", tag); 5322 tag_str = unk_tag; 5323 } 5324 if (dwarf_get_abbrev_children_flag(ab, &flag, &de) != 5325 DW_DLV_OK) { 5326 warnx("dwarf_get_abbrev_children_flag failed:" 5327 " %s", dwarf_errmsg(de)); 5328 goto next_abbrev; 5329 } 5330 printf(" %s %s\n", tag_str, 5331 flag ? "[has children]" : "[no children]"); 5332 for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) { 5333 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j, 5334 &attr, &form, &atoff, &de) != DW_DLV_OK) { 5335 warnx("dwarf_get_abbrev_entry failed:" 5336 " %s", dwarf_errmsg(de)); 5337 continue; 5338 } 5339 if (dwarf_get_AT_name(attr, &attr_str) != 5340 DW_DLV_OK) { 5341 snprintf(unk_attr, sizeof(unk_attr), 5342 "[Unknown AT: %#x]", attr); 5343 attr_str = unk_attr; 5344 } 5345 if (dwarf_get_FORM_name(form, &form_str) != 5346 DW_DLV_OK) { 5347 snprintf(unk_form, sizeof(unk_form), 5348 "[Unknown Form: %#x]", 5349 (Dwarf_Half) form); 5350 form_str = unk_form; 5351 } 5352 printf(" %-18s %s\n", attr_str, form_str); 5353 } 5354 next_abbrev: 5355 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5356 } 5357 if (ret != DW_DLV_OK) 5358 warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de)); 5359 } 5360 if (ret == DW_DLV_ERROR) 5361 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5362 } 5363 5364 static void 5365 dump_dwarf_pubnames(struct readelf *re) 5366 { 5367 struct section *s; 5368 Dwarf_Off die_off; 5369 Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length; 5370 Dwarf_Signed cnt; 5371 Dwarf_Global *globs; 5372 Dwarf_Half nt_version; 5373 Dwarf_Error de; 5374 Elf_Data *d; 5375 char *glob_name; 5376 int i, dwarf_size, elferr; 5377 5378 printf("\nContents of the .debug_pubnames section:\n"); 5379 5380 s = NULL; 5381 for (i = 0; (size_t) i < re->shnum; i++) { 5382 s = &re->sl[i]; 5383 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames")) 5384 break; 5385 } 5386 if ((size_t) i >= re->shnum) 5387 return; 5388 5389 (void) elf_errno(); 5390 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5391 elferr = elf_errno(); 5392 if (elferr != 0) 5393 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5394 return; 5395 } 5396 if (d->d_size <= 0) 5397 return; 5398 5399 /* Read in .debug_pubnames section table header. */ 5400 offset = 0; 5401 length = re->dw_read(d, &offset, 4); 5402 if (length == 0xffffffff) { 5403 dwarf_size = 8; 5404 length = re->dw_read(d, &offset, 8); 5405 } else 5406 dwarf_size = 4; 5407 5408 if (length > d->d_size - offset) { 5409 warnx("invalid .dwarf_pubnames section"); 5410 return; 5411 } 5412 5413 nt_version = re->dw_read(d, &offset, 2); 5414 nt_cu_offset = re->dw_read(d, &offset, dwarf_size); 5415 nt_cu_length = re->dw_read(d, &offset, dwarf_size); 5416 printf(" Length:\t\t\t\t%ju\n", (uintmax_t) length); 5417 printf(" Version:\t\t\t\t%u\n", nt_version); 5418 printf(" Offset into .debug_info section:\t%ju\n", 5419 (uintmax_t) nt_cu_offset); 5420 printf(" Size of area in .debug_info section:\t%ju\n", 5421 (uintmax_t) nt_cu_length); 5422 5423 if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) { 5424 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de)); 5425 return; 5426 } 5427 5428 printf("\n Offset Name\n"); 5429 for (i = 0; i < cnt; i++) { 5430 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) { 5431 warnx("dwarf_globname failed: %s", dwarf_errmsg(de)); 5432 continue; 5433 } 5434 if (dwarf_global_die_offset(globs[i], &die_off, &de) != 5435 DW_DLV_OK) { 5436 warnx("dwarf_global_die_offset failed: %s", 5437 dwarf_errmsg(de)); 5438 continue; 5439 } 5440 printf(" %-11ju %s\n", (uintmax_t) die_off, glob_name); 5441 } 5442 } 5443 5444 static void 5445 dump_dwarf_aranges(struct readelf *re) 5446 { 5447 struct section *s; 5448 Dwarf_Arange *aranges; 5449 Dwarf_Addr start; 5450 Dwarf_Unsigned offset, length, as_cu_offset; 5451 Dwarf_Off die_off; 5452 Dwarf_Signed cnt; 5453 Dwarf_Half as_version, as_addrsz, as_segsz; 5454 Dwarf_Error de; 5455 Elf_Data *d; 5456 int i, dwarf_size, elferr; 5457 5458 printf("\nContents of section .debug_aranges:\n"); 5459 5460 s = NULL; 5461 for (i = 0; (size_t) i < re->shnum; i++) { 5462 s = &re->sl[i]; 5463 if (s->name != NULL && !strcmp(s->name, ".debug_aranges")) 5464 break; 5465 } 5466 if ((size_t) i >= re->shnum) 5467 return; 5468 5469 (void) elf_errno(); 5470 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5471 elferr = elf_errno(); 5472 if (elferr != 0) 5473 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5474 return; 5475 } 5476 if (d->d_size <= 0) 5477 return; 5478 5479 /* Read in the .debug_aranges section table header. */ 5480 offset = 0; 5481 length = re->dw_read(d, &offset, 4); 5482 if (length == 0xffffffff) { 5483 dwarf_size = 8; 5484 length = re->dw_read(d, &offset, 8); 5485 } else 5486 dwarf_size = 4; 5487 5488 if (length > d->d_size - offset) { 5489 warnx("invalid .dwarf_aranges section"); 5490 return; 5491 } 5492 5493 as_version = re->dw_read(d, &offset, 2); 5494 as_cu_offset = re->dw_read(d, &offset, dwarf_size); 5495 as_addrsz = re->dw_read(d, &offset, 1); 5496 as_segsz = re->dw_read(d, &offset, 1); 5497 5498 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 5499 printf(" Version:\t\t\t%u\n", as_version); 5500 printf(" Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset); 5501 printf(" Pointer Size:\t\t\t%u\n", as_addrsz); 5502 printf(" Segment Size:\t\t\t%u\n", as_segsz); 5503 5504 if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) { 5505 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de)); 5506 return; 5507 } 5508 5509 printf("\n Address Length\n"); 5510 for (i = 0; i < cnt; i++) { 5511 if (dwarf_get_arange_info(aranges[i], &start, &length, 5512 &die_off, &de) != DW_DLV_OK) { 5513 warnx("dwarf_get_arange_info failed: %s", 5514 dwarf_errmsg(de)); 5515 continue; 5516 } 5517 printf(" %08jx %ju\n", (uintmax_t) start, 5518 (uintmax_t) length); 5519 } 5520 } 5521 5522 static void 5523 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) 5524 { 5525 Dwarf_Attribute *attr_list; 5526 Dwarf_Ranges *ranges; 5527 Dwarf_Die ret_die; 5528 Dwarf_Error de; 5529 Dwarf_Addr base0; 5530 Dwarf_Half attr; 5531 Dwarf_Signed attr_count, cnt; 5532 Dwarf_Unsigned off, bytecnt; 5533 int i, j, ret; 5534 5535 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5536 DW_DLV_OK) { 5537 if (ret == DW_DLV_ERROR) 5538 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5539 goto cont_search; 5540 } 5541 5542 for (i = 0; i < attr_count; i++) { 5543 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5544 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5545 continue; 5546 } 5547 if (attr != DW_AT_ranges) 5548 continue; 5549 if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) { 5550 warnx("dwarf_formudata failed: %s", dwarf_errmsg(de)); 5551 continue; 5552 } 5553 if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt, 5554 &bytecnt, &de) != DW_DLV_OK) 5555 continue; 5556 base0 = base; 5557 for (j = 0; j < cnt; j++) { 5558 printf(" %08jx ", (uintmax_t) off); 5559 if (ranges[j].dwr_type == DW_RANGES_END) { 5560 printf("%s\n", "<End of list>"); 5561 continue; 5562 } else if (ranges[j].dwr_type == 5563 DW_RANGES_ADDRESS_SELECTION) { 5564 base0 = ranges[j].dwr_addr2; 5565 continue; 5566 } 5567 if (re->ec == ELFCLASS32) 5568 printf("%08jx %08jx\n", 5569 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5570 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5571 else 5572 printf("%016jx %016jx\n", 5573 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5574 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5575 } 5576 } 5577 5578 cont_search: 5579 /* Search children. */ 5580 ret = dwarf_child(die, &ret_die, &de); 5581 if (ret == DW_DLV_ERROR) 5582 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5583 else if (ret == DW_DLV_OK) 5584 dump_dwarf_ranges_foreach(re, ret_die, base); 5585 5586 /* Search sibling. */ 5587 ret = dwarf_siblingof(re->dbg, die, &ret_die, &de); 5588 if (ret == DW_DLV_ERROR) 5589 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5590 else if (ret == DW_DLV_OK) 5591 dump_dwarf_ranges_foreach(re, ret_die, base); 5592 } 5593 5594 static void 5595 dump_dwarf_ranges(struct readelf *re) 5596 { 5597 Dwarf_Ranges *ranges; 5598 Dwarf_Die die; 5599 Dwarf_Signed cnt; 5600 Dwarf_Unsigned bytecnt; 5601 Dwarf_Half tag; 5602 Dwarf_Error de; 5603 Dwarf_Unsigned lowpc; 5604 int ret; 5605 5606 if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) != 5607 DW_DLV_OK) 5608 return; 5609 5610 printf("Contents of the .debug_ranges section:\n\n"); 5611 if (re->ec == ELFCLASS32) 5612 printf(" %-8s %-8s %s\n", "Offset", "Begin", "End"); 5613 else 5614 printf(" %-8s %-16s %s\n", "Offset", "Begin", "End"); 5615 5616 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5617 NULL, &de)) == DW_DLV_OK) { 5618 die = NULL; 5619 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 5620 continue; 5621 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5622 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5623 continue; 5624 } 5625 /* XXX: What about DW_TAG_partial_unit? */ 5626 lowpc = 0; 5627 if (tag == DW_TAG_compile_unit) { 5628 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc, 5629 &de) != DW_DLV_OK) 5630 lowpc = 0; 5631 } 5632 5633 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc); 5634 } 5635 putchar('\n'); 5636 } 5637 5638 static void 5639 dump_dwarf_macinfo(struct readelf *re) 5640 { 5641 Dwarf_Unsigned offset; 5642 Dwarf_Signed cnt; 5643 Dwarf_Macro_Details *md; 5644 Dwarf_Error de; 5645 const char *mi_str; 5646 char unk_mi[32]; 5647 int i; 5648 5649 #define _MAX_MACINFO_ENTRY 65535 5650 5651 printf("\nContents of section .debug_macinfo:\n\n"); 5652 5653 offset = 0; 5654 while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY, 5655 &cnt, &md, &de) == DW_DLV_OK) { 5656 for (i = 0; i < cnt; i++) { 5657 offset = md[i].dmd_offset + 1; 5658 if (md[i].dmd_type == 0) 5659 break; 5660 if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) != 5661 DW_DLV_OK) { 5662 snprintf(unk_mi, sizeof(unk_mi), 5663 "[Unknown MACINFO: %#x]", md[i].dmd_type); 5664 mi_str = unk_mi; 5665 } 5666 printf(" %s", mi_str); 5667 switch (md[i].dmd_type) { 5668 case DW_MACINFO_define: 5669 case DW_MACINFO_undef: 5670 printf(" - lineno : %jd macro : %s\n", 5671 (intmax_t) md[i].dmd_lineno, 5672 md[i].dmd_macro); 5673 break; 5674 case DW_MACINFO_start_file: 5675 printf(" - lineno : %jd filenum : %jd\n", 5676 (intmax_t) md[i].dmd_lineno, 5677 (intmax_t) md[i].dmd_fileindex); 5678 break; 5679 default: 5680 putchar('\n'); 5681 break; 5682 } 5683 } 5684 } 5685 5686 #undef _MAX_MACINFO_ENTRY 5687 } 5688 5689 static void 5690 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts, 5691 Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc, 5692 Dwarf_Debug dbg) 5693 { 5694 Dwarf_Frame_Op *oplist; 5695 Dwarf_Signed opcnt, delta; 5696 Dwarf_Small op; 5697 Dwarf_Error de; 5698 const char *op_str; 5699 char unk_op[32]; 5700 int i; 5701 5702 if (dwarf_expand_frame_instructions(cie, insts, len, &oplist, 5703 &opcnt, &de) != DW_DLV_OK) { 5704 warnx("dwarf_expand_frame_instructions failed: %s", 5705 dwarf_errmsg(de)); 5706 return; 5707 } 5708 5709 for (i = 0; i < opcnt; i++) { 5710 if (oplist[i].fp_base_op != 0) 5711 op = oplist[i].fp_base_op << 6; 5712 else 5713 op = oplist[i].fp_extended_op; 5714 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) { 5715 snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]", 5716 op); 5717 op_str = unk_op; 5718 } 5719 printf(" %s", op_str); 5720 switch (op) { 5721 case DW_CFA_advance_loc: 5722 delta = oplist[i].fp_offset * caf; 5723 pc += delta; 5724 printf(": %ju to %08jx", (uintmax_t) delta, 5725 (uintmax_t) pc); 5726 break; 5727 case DW_CFA_offset: 5728 case DW_CFA_offset_extended: 5729 case DW_CFA_offset_extended_sf: 5730 delta = oplist[i].fp_offset * daf; 5731 printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register, 5732 dwarf_regname(re, oplist[i].fp_register), 5733 (intmax_t) delta); 5734 break; 5735 case DW_CFA_restore: 5736 printf(": r%u (%s)", oplist[i].fp_register, 5737 dwarf_regname(re, oplist[i].fp_register)); 5738 break; 5739 case DW_CFA_set_loc: 5740 pc = oplist[i].fp_offset; 5741 printf(": to %08jx", (uintmax_t) pc); 5742 break; 5743 case DW_CFA_advance_loc1: 5744 case DW_CFA_advance_loc2: 5745 case DW_CFA_advance_loc4: 5746 pc += oplist[i].fp_offset; 5747 printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset, 5748 (uintmax_t) pc); 5749 break; 5750 case DW_CFA_def_cfa: 5751 printf(": r%u (%s) ofs %ju", oplist[i].fp_register, 5752 dwarf_regname(re, oplist[i].fp_register), 5753 (uintmax_t) oplist[i].fp_offset); 5754 break; 5755 case DW_CFA_def_cfa_sf: 5756 printf(": r%u (%s) ofs %jd", oplist[i].fp_register, 5757 dwarf_regname(re, oplist[i].fp_register), 5758 (intmax_t) (oplist[i].fp_offset * daf)); 5759 break; 5760 case DW_CFA_def_cfa_register: 5761 printf(": r%u (%s)", oplist[i].fp_register, 5762 dwarf_regname(re, oplist[i].fp_register)); 5763 break; 5764 case DW_CFA_def_cfa_offset: 5765 printf(": %ju", (uintmax_t) oplist[i].fp_offset); 5766 break; 5767 case DW_CFA_def_cfa_offset_sf: 5768 printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf)); 5769 break; 5770 default: 5771 break; 5772 } 5773 putchar('\n'); 5774 } 5775 5776 dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK); 5777 } 5778 5779 static char * 5780 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off) 5781 { 5782 static char rs[16]; 5783 5784 if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE) 5785 snprintf(rs, sizeof(rs), "%c", 'u'); 5786 else if (reg == DW_FRAME_CFA_COL) 5787 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off); 5788 else 5789 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg), 5790 (intmax_t) off); 5791 5792 return (rs); 5793 } 5794 5795 static int 5796 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc, 5797 Dwarf_Unsigned func_len, Dwarf_Half cie_ra) 5798 { 5799 Dwarf_Regtable rt; 5800 Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc; 5801 Dwarf_Error de; 5802 char *vec; 5803 int i; 5804 5805 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7)) 5806 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7))) 5807 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7))) 5808 #define RT(x) rt.rules[(x)] 5809 5810 vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1); 5811 if (vec == NULL) 5812 err(EXIT_FAILURE, "calloc failed"); 5813 5814 pre_pc = ~((Dwarf_Addr) 0); 5815 cur_pc = pc; 5816 end_pc = pc + func_len; 5817 for (; cur_pc < end_pc; cur_pc++) { 5818 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5819 &de) != DW_DLV_OK) { 5820 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5821 dwarf_errmsg(de)); 5822 return (-1); 5823 } 5824 if (row_pc == pre_pc) 5825 continue; 5826 pre_pc = row_pc; 5827 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5828 if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE) 5829 BIT_SET(vec, i); 5830 } 5831 } 5832 5833 printf(" LOC CFA "); 5834 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5835 if (BIT_ISSET(vec, i)) { 5836 if ((Dwarf_Half) i == cie_ra) 5837 printf("ra "); 5838 else 5839 printf("%-5s", 5840 dwarf_regname(re, (unsigned int) i)); 5841 } 5842 } 5843 putchar('\n'); 5844 5845 pre_pc = ~((Dwarf_Addr) 0); 5846 cur_pc = pc; 5847 end_pc = pc + func_len; 5848 for (; cur_pc < end_pc; cur_pc++) { 5849 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5850 &de) != DW_DLV_OK) { 5851 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5852 dwarf_errmsg(de)); 5853 return (-1); 5854 } 5855 if (row_pc == pre_pc) 5856 continue; 5857 pre_pc = row_pc; 5858 printf("%08jx ", (uintmax_t) row_pc); 5859 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum, 5860 RT(0).dw_offset)); 5861 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5862 if (BIT_ISSET(vec, i)) { 5863 printf("%-5s", get_regoff_str(re, 5864 RT(i).dw_regnum, RT(i).dw_offset)); 5865 } 5866 } 5867 putchar('\n'); 5868 } 5869 5870 free(vec); 5871 5872 return (0); 5873 5874 #undef BIT_SET 5875 #undef BIT_CLR 5876 #undef BIT_ISSET 5877 #undef RT 5878 } 5879 5880 static void 5881 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) 5882 { 5883 Dwarf_Cie *cie_list, cie, pre_cie; 5884 Dwarf_Fde *fde_list, fde; 5885 Dwarf_Off cie_offset, fde_offset; 5886 Dwarf_Unsigned cie_length, fde_instlen; 5887 Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length; 5888 Dwarf_Signed cie_count, fde_count, cie_index; 5889 Dwarf_Addr low_pc; 5890 Dwarf_Half cie_ra; 5891 Dwarf_Small cie_version; 5892 Dwarf_Ptr fde_addr, fde_inst, cie_inst; 5893 char *cie_aug, c; 5894 int i, eh_frame; 5895 Dwarf_Error de; 5896 5897 printf("\nThe section %s contains:\n\n", s->name); 5898 5899 if (!strcmp(s->name, ".debug_frame")) { 5900 eh_frame = 0; 5901 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count, 5902 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5903 warnx("dwarf_get_fde_list failed: %s", 5904 dwarf_errmsg(de)); 5905 return; 5906 } 5907 } else if (!strcmp(s->name, ".eh_frame")) { 5908 eh_frame = 1; 5909 if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, 5910 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5911 warnx("dwarf_get_fde_list_eh failed: %s", 5912 dwarf_errmsg(de)); 5913 return; 5914 } 5915 } else 5916 return; 5917 5918 pre_cie = NULL; 5919 for (i = 0; i < fde_count; i++) { 5920 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) { 5921 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5922 continue; 5923 } 5924 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) { 5925 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5926 continue; 5927 } 5928 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr, 5929 &fde_length, &cie_offset, &cie_index, &fde_offset, 5930 &de) != DW_DLV_OK) { 5931 warnx("dwarf_get_fde_range failed: %s", 5932 dwarf_errmsg(de)); 5933 continue; 5934 } 5935 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen, 5936 &de) != DW_DLV_OK) { 5937 warnx("dwarf_get_fde_instr_bytes failed: %s", 5938 dwarf_errmsg(de)); 5939 continue; 5940 } 5941 if (pre_cie == NULL || cie != pre_cie) { 5942 pre_cie = cie; 5943 if (dwarf_get_cie_info(cie, &cie_length, &cie_version, 5944 &cie_aug, &cie_caf, &cie_daf, &cie_ra, 5945 &cie_inst, &cie_instlen, &de) != DW_DLV_OK) { 5946 warnx("dwarf_get_cie_info failed: %s", 5947 dwarf_errmsg(de)); 5948 continue; 5949 } 5950 printf("%08jx %08jx %8.8jx CIE", 5951 (uintmax_t) cie_offset, 5952 (uintmax_t) cie_length, 5953 (uintmax_t) (eh_frame ? 0 : ~0U)); 5954 if (!alt) { 5955 putchar('\n'); 5956 printf(" Version:\t\t\t%u\n", cie_version); 5957 printf(" Augmentation:\t\t\t\""); 5958 while ((c = *cie_aug++) != '\0') 5959 putchar(c); 5960 printf("\"\n"); 5961 printf(" Code alignment factor:\t%ju\n", 5962 (uintmax_t) cie_caf); 5963 printf(" Data alignment factor:\t%jd\n", 5964 (intmax_t) cie_daf); 5965 printf(" Return address column:\t%ju\n", 5966 (uintmax_t) cie_ra); 5967 putchar('\n'); 5968 dump_dwarf_frame_inst(re, cie, cie_inst, 5969 cie_instlen, cie_caf, cie_daf, 0, 5970 re->dbg); 5971 putchar('\n'); 5972 } else { 5973 printf(" \""); 5974 while ((c = *cie_aug++) != '\0') 5975 putchar(c); 5976 putchar('"'); 5977 printf(" cf=%ju df=%jd ra=%ju\n", 5978 (uintmax_t) cie_caf, 5979 (uintmax_t) cie_daf, 5980 (uintmax_t) cie_ra); 5981 dump_dwarf_frame_regtable(re, fde, low_pc, 1, 5982 cie_ra); 5983 putchar('\n'); 5984 } 5985 } 5986 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n", 5987 (uintmax_t) fde_offset, (uintmax_t) fde_length, 5988 (uintmax_t) cie_offset, 5989 (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset : 5990 cie_offset), 5991 (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len)); 5992 if (!alt) 5993 dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen, 5994 cie_caf, cie_daf, low_pc, re->dbg); 5995 else 5996 dump_dwarf_frame_regtable(re, fde, low_pc, func_len, 5997 cie_ra); 5998 putchar('\n'); 5999 } 6000 } 6001 6002 static void 6003 dump_dwarf_frame(struct readelf *re, int alt) 6004 { 6005 struct section *s; 6006 int i; 6007 6008 (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL); 6009 6010 for (i = 0; (size_t) i < re->shnum; i++) { 6011 s = &re->sl[i]; 6012 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") || 6013 !strcmp(s->name, ".eh_frame"))) 6014 dump_dwarf_frame_section(re, s, alt); 6015 } 6016 } 6017 6018 static void 6019 dump_dwarf_str(struct readelf *re) 6020 { 6021 struct section *s; 6022 Elf_Data *d; 6023 unsigned char *p; 6024 int elferr, end, i, j; 6025 6026 printf("\nContents of section .debug_str:\n"); 6027 6028 s = NULL; 6029 for (i = 0; (size_t) i < re->shnum; i++) { 6030 s = &re->sl[i]; 6031 if (s->name != NULL && !strcmp(s->name, ".debug_str")) 6032 break; 6033 } 6034 if ((size_t) i >= re->shnum) 6035 return; 6036 6037 (void) elf_errno(); 6038 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 6039 elferr = elf_errno(); 6040 if (elferr != 0) 6041 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 6042 return; 6043 } 6044 if (d->d_size <= 0) 6045 return; 6046 6047 for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) { 6048 printf(" 0x%08x", (unsigned int) i); 6049 if ((size_t) i + 16 > d->d_size) 6050 end = d->d_size; 6051 else 6052 end = i + 16; 6053 for (j = i; j < i + 16; j++) { 6054 if ((j - i) % 4 == 0) 6055 putchar(' '); 6056 if (j >= end) { 6057 printf(" "); 6058 continue; 6059 } 6060 printf("%02x", (uint8_t) p[j]); 6061 } 6062 putchar(' '); 6063 for (j = i; j < end; j++) { 6064 if (isprint(p[j])) 6065 putchar(p[j]); 6066 else if (p[j] == 0) 6067 putchar('.'); 6068 else 6069 putchar(' '); 6070 } 6071 putchar('\n'); 6072 } 6073 } 6074 6075 static int 6076 loc_at_comparator(const void *la1, const void *la2) 6077 { 6078 const struct loc_at *left, *right; 6079 6080 left = (const struct loc_at *)la1; 6081 right = (const struct loc_at *)la2; 6082 6083 if (left->la_off > right->la_off) 6084 return (1); 6085 else if (left->la_off < right->la_off) 6086 return (-1); 6087 else 6088 return (0); 6089 } 6090 6091 static void 6092 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc, 6093 struct loc_at **la_list, size_t *la_list_len, size_t *la_list_cap) 6094 { 6095 struct loc_at *la; 6096 Dwarf_Attribute *attr_list; 6097 Dwarf_Die ret_die; 6098 Dwarf_Unsigned off; 6099 Dwarf_Off ref; 6100 Dwarf_Signed attr_count; 6101 Dwarf_Half attr, form; 6102 Dwarf_Bool is_info; 6103 Dwarf_Error de; 6104 int i, ret; 6105 6106 is_info = dwarf_get_die_infotypes_flag(die); 6107 6108 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 6109 DW_DLV_OK) { 6110 if (ret == DW_DLV_ERROR) 6111 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 6112 goto cont_search; 6113 } 6114 for (i = 0; i < attr_count; i++) { 6115 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 6116 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 6117 continue; 6118 } 6119 if (attr != DW_AT_location && 6120 attr != DW_AT_string_length && 6121 attr != DW_AT_return_addr && 6122 attr != DW_AT_data_member_location && 6123 attr != DW_AT_frame_base && 6124 attr != DW_AT_segment && 6125 attr != DW_AT_static_link && 6126 attr != DW_AT_use_location && 6127 attr != DW_AT_vtable_elem_location) 6128 continue; 6129 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 6130 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 6131 continue; 6132 } 6133 if (form == DW_FORM_data4 || form == DW_FORM_data8) { 6134 if (dwarf_formudata(attr_list[i], &off, &de) != 6135 DW_DLV_OK) { 6136 warnx("dwarf_formudata failed: %s", 6137 dwarf_errmsg(de)); 6138 continue; 6139 } 6140 } else if (form == DW_FORM_sec_offset) { 6141 if (dwarf_global_formref(attr_list[i], &ref, &de) != 6142 DW_DLV_OK) { 6143 warnx("dwarf_global_formref failed: %s", 6144 dwarf_errmsg(de)); 6145 continue; 6146 } 6147 off = ref; 6148 } else 6149 continue; 6150 6151 if (*la_list_cap == *la_list_len) { 6152 *la_list = realloc(*la_list, 6153 *la_list_cap * 2 * sizeof(**la_list)); 6154 if (la_list == NULL) 6155 errx(EXIT_FAILURE, "realloc failed"); 6156 *la_list_cap *= 2; 6157 } 6158 la = &((*la_list)[*la_list_len]); 6159 la->la_at = attr_list[i]; 6160 la->la_off = off; 6161 la->la_lowpc = lowpc; 6162 la->la_cu_psize = re->cu_psize; 6163 la->la_cu_osize = re->cu_osize; 6164 la->la_cu_ver = re->cu_ver; 6165 (*la_list_len)++; 6166 } 6167 6168 cont_search: 6169 /* Search children. */ 6170 ret = dwarf_child(die, &ret_die, &de); 6171 if (ret == DW_DLV_ERROR) 6172 warnx("dwarf_child: %s", dwarf_errmsg(de)); 6173 else if (ret == DW_DLV_OK) 6174 search_loclist_at(re, ret_die, lowpc, la_list, 6175 la_list_len, la_list_cap); 6176 6177 /* Search sibling. */ 6178 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 6179 if (ret == DW_DLV_ERROR) 6180 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 6181 else if (ret == DW_DLV_OK) 6182 search_loclist_at(re, ret_die, lowpc, la_list, 6183 la_list_len, la_list_cap); 6184 } 6185 6186 static void 6187 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr) 6188 { 6189 const char *op_str; 6190 char unk_op[32]; 6191 uint8_t *b, n; 6192 int i; 6193 6194 if (dwarf_get_OP_name(lr->lr_atom, &op_str) != 6195 DW_DLV_OK) { 6196 snprintf(unk_op, sizeof(unk_op), 6197 "[Unknown OP: %#x]", lr->lr_atom); 6198 op_str = unk_op; 6199 } 6200 6201 printf("%s", op_str); 6202 6203 switch (lr->lr_atom) { 6204 case DW_OP_reg0: 6205 case DW_OP_reg1: 6206 case DW_OP_reg2: 6207 case DW_OP_reg3: 6208 case DW_OP_reg4: 6209 case DW_OP_reg5: 6210 case DW_OP_reg6: 6211 case DW_OP_reg7: 6212 case DW_OP_reg8: 6213 case DW_OP_reg9: 6214 case DW_OP_reg10: 6215 case DW_OP_reg11: 6216 case DW_OP_reg12: 6217 case DW_OP_reg13: 6218 case DW_OP_reg14: 6219 case DW_OP_reg15: 6220 case DW_OP_reg16: 6221 case DW_OP_reg17: 6222 case DW_OP_reg18: 6223 case DW_OP_reg19: 6224 case DW_OP_reg20: 6225 case DW_OP_reg21: 6226 case DW_OP_reg22: 6227 case DW_OP_reg23: 6228 case DW_OP_reg24: 6229 case DW_OP_reg25: 6230 case DW_OP_reg26: 6231 case DW_OP_reg27: 6232 case DW_OP_reg28: 6233 case DW_OP_reg29: 6234 case DW_OP_reg30: 6235 case DW_OP_reg31: 6236 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0)); 6237 break; 6238 6239 case DW_OP_deref: 6240 case DW_OP_lit0: 6241 case DW_OP_lit1: 6242 case DW_OP_lit2: 6243 case DW_OP_lit3: 6244 case DW_OP_lit4: 6245 case DW_OP_lit5: 6246 case DW_OP_lit6: 6247 case DW_OP_lit7: 6248 case DW_OP_lit8: 6249 case DW_OP_lit9: 6250 case DW_OP_lit10: 6251 case DW_OP_lit11: 6252 case DW_OP_lit12: 6253 case DW_OP_lit13: 6254 case DW_OP_lit14: 6255 case DW_OP_lit15: 6256 case DW_OP_lit16: 6257 case DW_OP_lit17: 6258 case DW_OP_lit18: 6259 case DW_OP_lit19: 6260 case DW_OP_lit20: 6261 case DW_OP_lit21: 6262 case DW_OP_lit22: 6263 case DW_OP_lit23: 6264 case DW_OP_lit24: 6265 case DW_OP_lit25: 6266 case DW_OP_lit26: 6267 case DW_OP_lit27: 6268 case DW_OP_lit28: 6269 case DW_OP_lit29: 6270 case DW_OP_lit30: 6271 case DW_OP_lit31: 6272 case DW_OP_dup: 6273 case DW_OP_drop: 6274 case DW_OP_over: 6275 case DW_OP_swap: 6276 case DW_OP_rot: 6277 case DW_OP_xderef: 6278 case DW_OP_abs: 6279 case DW_OP_and: 6280 case DW_OP_div: 6281 case DW_OP_minus: 6282 case DW_OP_mod: 6283 case DW_OP_mul: 6284 case DW_OP_neg: 6285 case DW_OP_not: 6286 case DW_OP_or: 6287 case DW_OP_plus: 6288 case DW_OP_shl: 6289 case DW_OP_shr: 6290 case DW_OP_shra: 6291 case DW_OP_xor: 6292 case DW_OP_eq: 6293 case DW_OP_ge: 6294 case DW_OP_gt: 6295 case DW_OP_le: 6296 case DW_OP_lt: 6297 case DW_OP_ne: 6298 case DW_OP_nop: 6299 case DW_OP_push_object_address: 6300 case DW_OP_form_tls_address: 6301 case DW_OP_call_frame_cfa: 6302 case DW_OP_stack_value: 6303 case DW_OP_GNU_push_tls_address: 6304 case DW_OP_GNU_uninit: 6305 break; 6306 6307 case DW_OP_const1u: 6308 case DW_OP_pick: 6309 case DW_OP_deref_size: 6310 case DW_OP_xderef_size: 6311 case DW_OP_const2u: 6312 case DW_OP_bra: 6313 case DW_OP_skip: 6314 case DW_OP_const4u: 6315 case DW_OP_const8u: 6316 case DW_OP_constu: 6317 case DW_OP_plus_uconst: 6318 case DW_OP_regx: 6319 case DW_OP_piece: 6320 printf(": %ju", (uintmax_t) 6321 lr->lr_number); 6322 break; 6323 6324 case DW_OP_const1s: 6325 case DW_OP_const2s: 6326 case DW_OP_const4s: 6327 case DW_OP_const8s: 6328 case DW_OP_consts: 6329 printf(": %jd", (intmax_t) 6330 lr->lr_number); 6331 break; 6332 6333 case DW_OP_breg0: 6334 case DW_OP_breg1: 6335 case DW_OP_breg2: 6336 case DW_OP_breg3: 6337 case DW_OP_breg4: 6338 case DW_OP_breg5: 6339 case DW_OP_breg6: 6340 case DW_OP_breg7: 6341 case DW_OP_breg8: 6342 case DW_OP_breg9: 6343 case DW_OP_breg10: 6344 case DW_OP_breg11: 6345 case DW_OP_breg12: 6346 case DW_OP_breg13: 6347 case DW_OP_breg14: 6348 case DW_OP_breg15: 6349 case DW_OP_breg16: 6350 case DW_OP_breg17: 6351 case DW_OP_breg18: 6352 case DW_OP_breg19: 6353 case DW_OP_breg20: 6354 case DW_OP_breg21: 6355 case DW_OP_breg22: 6356 case DW_OP_breg23: 6357 case DW_OP_breg24: 6358 case DW_OP_breg25: 6359 case DW_OP_breg26: 6360 case DW_OP_breg27: 6361 case DW_OP_breg28: 6362 case DW_OP_breg29: 6363 case DW_OP_breg30: 6364 case DW_OP_breg31: 6365 printf(" (%s): %jd", 6366 dwarf_regname(re, lr->lr_atom - DW_OP_breg0), 6367 (intmax_t) lr->lr_number); 6368 break; 6369 6370 case DW_OP_fbreg: 6371 printf(": %jd", (intmax_t) 6372 lr->lr_number); 6373 break; 6374 6375 case DW_OP_bregx: 6376 printf(": %ju (%s) %jd", 6377 (uintmax_t) lr->lr_number, 6378 dwarf_regname(re, (unsigned int) lr->lr_number), 6379 (intmax_t) lr->lr_number2); 6380 break; 6381 6382 case DW_OP_addr: 6383 case DW_OP_GNU_encoded_addr: 6384 printf(": %#jx", (uintmax_t) 6385 lr->lr_number); 6386 break; 6387 6388 case DW_OP_GNU_implicit_pointer: 6389 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number, 6390 (intmax_t) lr->lr_number2); 6391 break; 6392 6393 case DW_OP_implicit_value: 6394 printf(": %ju byte block:", (uintmax_t) lr->lr_number); 6395 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6396 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++) 6397 printf(" %x", b[i]); 6398 break; 6399 6400 case DW_OP_GNU_entry_value: 6401 printf(": ("); 6402 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2, 6403 lr->lr_number); 6404 putchar(')'); 6405 break; 6406 6407 case DW_OP_GNU_const_type: 6408 printf(": <0x%jx> ", (uintmax_t) lr->lr_number); 6409 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6410 n = *b; 6411 for (i = 1; (uint8_t) i < n; i++) 6412 printf(" %x", b[i]); 6413 break; 6414 6415 case DW_OP_GNU_regval_type: 6416 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number, 6417 dwarf_regname(re, (unsigned int) lr->lr_number), 6418 (uintmax_t) lr->lr_number2); 6419 break; 6420 6421 case DW_OP_GNU_convert: 6422 case DW_OP_GNU_deref_type: 6423 case DW_OP_GNU_parameter_ref: 6424 case DW_OP_GNU_reinterpret: 6425 printf(": <0x%jx>", (uintmax_t) lr->lr_number); 6426 break; 6427 6428 default: 6429 break; 6430 } 6431 } 6432 6433 static void 6434 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len) 6435 { 6436 Dwarf_Locdesc *llbuf; 6437 Dwarf_Signed lcnt; 6438 Dwarf_Error de; 6439 int i; 6440 6441 if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize, 6442 re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) { 6443 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de)); 6444 return; 6445 } 6446 6447 for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) { 6448 dump_dwarf_loc(re, &llbuf->ld_s[i]); 6449 if (i < llbuf->ld_cents - 1) 6450 printf("; "); 6451 } 6452 6453 dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK); 6454 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC); 6455 } 6456 6457 static void 6458 dump_dwarf_loclist(struct readelf *re) 6459 { 6460 Dwarf_Die die; 6461 Dwarf_Locdesc **llbuf; 6462 Dwarf_Unsigned lowpc; 6463 Dwarf_Signed lcnt; 6464 Dwarf_Half tag, version, pointer_size, off_size; 6465 Dwarf_Error de; 6466 struct loc_at *la_list, *left, *right, *la; 6467 size_t la_list_len, la_list_cap; 6468 unsigned int duplicates, k; 6469 int i, j, ret, has_content; 6470 6471 la_list_len = 0; 6472 la_list_cap = 200; 6473 if ((la_list = calloc(la_list_cap, sizeof(struct loc_at))) == NULL) 6474 errx(EXIT_FAILURE, "calloc failed"); 6475 /* Search .debug_info section. */ 6476 while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL, 6477 &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) { 6478 set_cu_context(re, pointer_size, off_size, version); 6479 die = NULL; 6480 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 6481 continue; 6482 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6483 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 6484 continue; 6485 } 6486 /* XXX: What about DW_TAG_partial_unit? */ 6487 lowpc = 0; 6488 if (tag == DW_TAG_compile_unit) { 6489 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6490 &lowpc, &de) != DW_DLV_OK) 6491 lowpc = 0; 6492 } 6493 6494 /* Search attributes for reference to .debug_loc section. */ 6495 search_loclist_at(re, die, lowpc, &la_list, 6496 &la_list_len, &la_list_cap); 6497 } 6498 if (ret == DW_DLV_ERROR) 6499 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6500 6501 /* Search .debug_types section. */ 6502 do { 6503 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL, 6504 &version, NULL, &pointer_size, &off_size, NULL, NULL, 6505 NULL, NULL, &de)) == DW_DLV_OK) { 6506 set_cu_context(re, pointer_size, off_size, version); 6507 die = NULL; 6508 if (dwarf_siblingof(re->dbg, die, &die, &de) != 6509 DW_DLV_OK) 6510 continue; 6511 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6512 warnx("dwarf_tag failed: %s", 6513 dwarf_errmsg(de)); 6514 continue; 6515 } 6516 6517 lowpc = 0; 6518 if (tag == DW_TAG_type_unit) { 6519 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6520 &lowpc, &de) != DW_DLV_OK) 6521 lowpc = 0; 6522 } 6523 6524 /* 6525 * Search attributes for reference to .debug_loc 6526 * section. 6527 */ 6528 search_loclist_at(re, die, lowpc, &la_list, 6529 &la_list_len, &la_list_cap); 6530 } 6531 if (ret == DW_DLV_ERROR) 6532 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6533 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 6534 6535 if (la_list_len == 0) { 6536 free(la_list); 6537 return; 6538 } 6539 6540 /* Sort la_list using loc_at_comparator. */ 6541 qsort(la_list, la_list_len, sizeof(struct loc_at), loc_at_comparator); 6542 6543 /* Get rid of the duplicates in la_list. */ 6544 duplicates = 0; 6545 for (k = 1; k < la_list_len; ++k) { 6546 left = &la_list[k - 1 - duplicates]; 6547 right = &la_list[k]; 6548 6549 if (left->la_off == right->la_off) 6550 duplicates++; 6551 else 6552 la_list[k - duplicates] = *right; 6553 } 6554 la_list_len -= duplicates; 6555 6556 has_content = 0; 6557 for (k = 0; k < la_list_len; ++k) { 6558 la = &la_list[k]; 6559 if ((ret = dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de)) != 6560 DW_DLV_OK) { 6561 if (ret != DW_DLV_NO_ENTRY) 6562 warnx("dwarf_loclist_n failed: %s", 6563 dwarf_errmsg(de)); 6564 continue; 6565 } 6566 if (!has_content) { 6567 has_content = 1; 6568 printf("\nContents of section .debug_loc:\n"); 6569 printf(" Offset Begin End Expression\n"); 6570 } 6571 set_cu_context(re, la->la_cu_psize, la->la_cu_osize, 6572 la->la_cu_ver); 6573 for (i = 0; i < lcnt; i++) { 6574 printf(" %8.8jx ", (uintmax_t) la->la_off); 6575 if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) { 6576 printf("<End of list>\n"); 6577 continue; 6578 } 6579 6580 /* TODO: handle base selection entry. */ 6581 6582 printf("%8.8jx %8.8jx ", 6583 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc), 6584 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc)); 6585 6586 putchar('('); 6587 for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) { 6588 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]); 6589 if (j < llbuf[i]->ld_cents - 1) 6590 printf("; "); 6591 } 6592 putchar(')'); 6593 6594 if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc) 6595 printf(" (start == end)"); 6596 putchar('\n'); 6597 } 6598 for (i = 0; i < lcnt; i++) { 6599 dwarf_dealloc(re->dbg, llbuf[i]->ld_s, 6600 DW_DLA_LOC_BLOCK); 6601 dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC); 6602 } 6603 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST); 6604 } 6605 6606 if (!has_content) 6607 printf("\nSection '.debug_loc' has no debugging data.\n"); 6608 6609 free(la_list); 6610 } 6611 6612 /* 6613 * Retrieve a string using string table section index and the string offset. 6614 */ 6615 static const char* 6616 get_string(struct readelf *re, int strtab, size_t off) 6617 { 6618 const char *name; 6619 6620 if ((name = elf_strptr(re->elf, strtab, off)) == NULL) 6621 return (""); 6622 6623 return (name); 6624 } 6625 6626 /* 6627 * Retrieve the name of a symbol using the section index of the symbol 6628 * table and the index of the symbol within that table. 6629 */ 6630 static const char * 6631 get_symbol_name(struct readelf *re, int symtab, int i) 6632 { 6633 struct section *s; 6634 const char *name; 6635 GElf_Sym sym; 6636 Elf_Data *data; 6637 int elferr; 6638 6639 s = &re->sl[symtab]; 6640 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6641 return (""); 6642 (void) elf_errno(); 6643 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6644 elferr = elf_errno(); 6645 if (elferr != 0) 6646 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6647 return (""); 6648 } 6649 if (gelf_getsym(data, i, &sym) != &sym) 6650 return (""); 6651 /* Return section name for STT_SECTION symbol. */ 6652 if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) { 6653 if (sym.st_shndx < re->shnum && 6654 re->sl[sym.st_shndx].name != NULL) 6655 return (re->sl[sym.st_shndx].name); 6656 return (""); 6657 } 6658 if (s->link >= re->shnum || 6659 (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL) 6660 return (""); 6661 6662 return (name); 6663 } 6664 6665 static uint64_t 6666 get_symbol_value(struct readelf *re, int symtab, int i) 6667 { 6668 struct section *s; 6669 GElf_Sym sym; 6670 Elf_Data *data; 6671 int elferr; 6672 6673 s = &re->sl[symtab]; 6674 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6675 return (0); 6676 (void) elf_errno(); 6677 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6678 elferr = elf_errno(); 6679 if (elferr != 0) 6680 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6681 return (0); 6682 } 6683 if (gelf_getsym(data, i, &sym) != &sym) 6684 return (0); 6685 6686 return (sym.st_value); 6687 } 6688 6689 static void 6690 hex_dump(struct readelf *re) 6691 { 6692 struct section *s; 6693 Elf_Data *d; 6694 uint8_t *buf; 6695 size_t sz, nbytes; 6696 uint64_t addr; 6697 int elferr, i, j; 6698 6699 for (i = 1; (size_t) i < re->shnum; i++) { 6700 s = &re->sl[i]; 6701 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL) 6702 continue; 6703 (void) elf_errno(); 6704 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6705 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6706 elferr = elf_errno(); 6707 if (elferr != 0) 6708 warnx("elf_getdata failed: %s", 6709 elf_errmsg(elferr)); 6710 continue; 6711 } 6712 (void) elf_errno(); 6713 if (d->d_size <= 0 || d->d_buf == NULL) { 6714 printf("\nSection '%s' has no data to dump.\n", 6715 s->name); 6716 continue; 6717 } 6718 buf = d->d_buf; 6719 sz = d->d_size; 6720 addr = s->addr; 6721 printf("\nHex dump of section '%s':\n", s->name); 6722 while (sz > 0) { 6723 printf(" 0x%8.8jx ", (uintmax_t)addr); 6724 nbytes = sz > 16? 16 : sz; 6725 for (j = 0; j < 16; j++) { 6726 if ((size_t)j < nbytes) 6727 printf("%2.2x", buf[j]); 6728 else 6729 printf(" "); 6730 if ((j & 3) == 3) 6731 printf(" "); 6732 } 6733 for (j = 0; (size_t)j < nbytes; j++) { 6734 if (isprint(buf[j])) 6735 printf("%c", buf[j]); 6736 else 6737 printf("."); 6738 } 6739 printf("\n"); 6740 buf += nbytes; 6741 addr += nbytes; 6742 sz -= nbytes; 6743 } 6744 } 6745 } 6746 6747 static void 6748 str_dump(struct readelf *re) 6749 { 6750 struct section *s; 6751 Elf_Data *d; 6752 unsigned char *start, *end, *buf_end; 6753 unsigned int len; 6754 int i, j, elferr, found; 6755 6756 for (i = 1; (size_t) i < re->shnum; i++) { 6757 s = &re->sl[i]; 6758 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL) 6759 continue; 6760 (void) elf_errno(); 6761 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6762 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6763 elferr = elf_errno(); 6764 if (elferr != 0) 6765 warnx("elf_getdata failed: %s", 6766 elf_errmsg(elferr)); 6767 continue; 6768 } 6769 (void) elf_errno(); 6770 if (d->d_size <= 0 || d->d_buf == NULL) { 6771 printf("\nSection '%s' has no data to dump.\n", 6772 s->name); 6773 continue; 6774 } 6775 buf_end = (unsigned char *) d->d_buf + d->d_size; 6776 start = (unsigned char *) d->d_buf; 6777 found = 0; 6778 printf("\nString dump of section '%s':\n", s->name); 6779 for (;;) { 6780 while (start < buf_end && !isprint(*start)) 6781 start++; 6782 if (start >= buf_end) 6783 break; 6784 end = start + 1; 6785 while (end < buf_end && isprint(*end)) 6786 end++; 6787 printf(" [%6lx] ", 6788 (long) (start - (unsigned char *) d->d_buf)); 6789 len = end - start; 6790 for (j = 0; (unsigned int) j < len; j++) 6791 putchar(start[j]); 6792 putchar('\n'); 6793 found = 1; 6794 if (end >= buf_end) 6795 break; 6796 start = end + 1; 6797 } 6798 if (!found) 6799 printf(" No strings found in this section."); 6800 putchar('\n'); 6801 } 6802 } 6803 6804 static void 6805 load_sections(struct readelf *re) 6806 { 6807 struct section *s; 6808 const char *name; 6809 Elf_Scn *scn; 6810 GElf_Shdr sh; 6811 size_t shstrndx, ndx; 6812 int elferr; 6813 6814 /* Allocate storage for internal section list. */ 6815 if (!elf_getshnum(re->elf, &re->shnum)) { 6816 warnx("elf_getshnum failed: %s", elf_errmsg(-1)); 6817 return; 6818 } 6819 if (re->sl != NULL) 6820 free(re->sl); 6821 if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL) 6822 err(EXIT_FAILURE, "calloc failed"); 6823 6824 /* Get the index of .shstrtab section. */ 6825 if (!elf_getshstrndx(re->elf, &shstrndx)) { 6826 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1)); 6827 return; 6828 } 6829 6830 if ((scn = elf_getscn(re->elf, 0)) == NULL) 6831 return; 6832 6833 (void) elf_errno(); 6834 do { 6835 if (gelf_getshdr(scn, &sh) == NULL) { 6836 warnx("gelf_getshdr failed: %s", elf_errmsg(-1)); 6837 (void) elf_errno(); 6838 continue; 6839 } 6840 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) { 6841 (void) elf_errno(); 6842 name = "<no-name>"; 6843 } 6844 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) { 6845 if ((elferr = elf_errno()) != 0) { 6846 warnx("elf_ndxscn failed: %s", 6847 elf_errmsg(elferr)); 6848 continue; 6849 } 6850 } 6851 if (ndx >= re->shnum) { 6852 warnx("section index of '%s' out of range", name); 6853 continue; 6854 } 6855 if (sh.sh_link >= re->shnum) 6856 warnx("section link %llu of '%s' out of range", 6857 (unsigned long long)sh.sh_link, name); 6858 s = &re->sl[ndx]; 6859 s->name = name; 6860 s->scn = scn; 6861 s->off = sh.sh_offset; 6862 s->sz = sh.sh_size; 6863 s->entsize = sh.sh_entsize; 6864 s->align = sh.sh_addralign; 6865 s->type = sh.sh_type; 6866 s->flags = sh.sh_flags; 6867 s->addr = sh.sh_addr; 6868 s->link = sh.sh_link; 6869 s->info = sh.sh_info; 6870 } while ((scn = elf_nextscn(re->elf, scn)) != NULL); 6871 elferr = elf_errno(); 6872 if (elferr != 0) 6873 warnx("elf_nextscn failed: %s", elf_errmsg(elferr)); 6874 } 6875 6876 static void 6877 unload_sections(struct readelf *re) 6878 { 6879 6880 if (re->sl != NULL) { 6881 free(re->sl); 6882 re->sl = NULL; 6883 } 6884 re->shnum = 0; 6885 re->vd_s = NULL; 6886 re->vn_s = NULL; 6887 re->vs_s = NULL; 6888 re->vs = NULL; 6889 re->vs_sz = 0; 6890 if (re->ver != NULL) { 6891 free(re->ver); 6892 re->ver = NULL; 6893 re->ver_sz = 0; 6894 } 6895 } 6896 6897 static void 6898 dump_elf(struct readelf *re) 6899 { 6900 6901 /* Fetch ELF header. No need to continue if it fails. */ 6902 if (gelf_getehdr(re->elf, &re->ehdr) == NULL) { 6903 warnx("gelf_getehdr failed: %s", elf_errmsg(-1)); 6904 return; 6905 } 6906 if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) { 6907 warnx("gelf_getclass failed: %s", elf_errmsg(-1)); 6908 return; 6909 } 6910 if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) { 6911 re->dw_read = _read_msb; 6912 re->dw_decode = _decode_msb; 6913 } else { 6914 re->dw_read = _read_lsb; 6915 re->dw_decode = _decode_lsb; 6916 } 6917 6918 if (re->options & ~RE_H) 6919 load_sections(re); 6920 if ((re->options & RE_VV) || (re->options & RE_S)) 6921 search_ver(re); 6922 if (re->options & RE_H) 6923 dump_ehdr(re); 6924 if (re->options & RE_L) 6925 dump_phdr(re); 6926 if (re->options & RE_SS) 6927 dump_shdr(re); 6928 if (re->options & RE_G) 6929 dump_section_groups(re); 6930 if (re->options & RE_D) 6931 dump_dynamic(re); 6932 if (re->options & RE_R) 6933 dump_reloc(re); 6934 if (re->options & RE_S) 6935 dump_symtabs(re); 6936 if (re->options & RE_N) 6937 dump_notes(re); 6938 if (re->options & RE_II) 6939 dump_hash(re); 6940 if (re->options & RE_X) 6941 hex_dump(re); 6942 if (re->options & RE_P) 6943 str_dump(re); 6944 if (re->options & RE_VV) 6945 dump_ver(re); 6946 if (re->options & RE_AA) 6947 dump_arch_specific_info(re); 6948 if (re->options & RE_W) 6949 dump_dwarf(re); 6950 if (re->options & ~RE_H) 6951 unload_sections(re); 6952 } 6953 6954 static void 6955 dump_dwarf(struct readelf *re) 6956 { 6957 Dwarf_Error de; 6958 int error; 6959 6960 if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) { 6961 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL) 6962 errx(EXIT_FAILURE, "dwarf_elf_init failed: %s", 6963 dwarf_errmsg(de)); 6964 return; 6965 } 6966 6967 if (re->dop & DW_A) 6968 dump_dwarf_abbrev(re); 6969 if (re->dop & DW_L) 6970 dump_dwarf_line(re); 6971 if (re->dop & DW_LL) 6972 dump_dwarf_line_decoded(re); 6973 if (re->dop & DW_I) { 6974 dump_dwarf_info(re, 0); 6975 dump_dwarf_info(re, 1); 6976 } 6977 if (re->dop & DW_P) 6978 dump_dwarf_pubnames(re); 6979 if (re->dop & DW_R) 6980 dump_dwarf_aranges(re); 6981 if (re->dop & DW_RR) 6982 dump_dwarf_ranges(re); 6983 if (re->dop & DW_M) 6984 dump_dwarf_macinfo(re); 6985 if (re->dop & DW_F) 6986 dump_dwarf_frame(re, 0); 6987 else if (re->dop & DW_FF) 6988 dump_dwarf_frame(re, 1); 6989 if (re->dop & DW_S) 6990 dump_dwarf_str(re); 6991 if (re->dop & DW_O) 6992 dump_dwarf_loclist(re); 6993 6994 dwarf_finish(re->dbg, &de); 6995 } 6996 6997 static void 6998 dump_ar(struct readelf *re, int fd) 6999 { 7000 Elf_Arsym *arsym; 7001 Elf_Arhdr *arhdr; 7002 Elf_Cmd cmd; 7003 Elf *e; 7004 size_t sz; 7005 off_t off; 7006 int i; 7007 7008 re->ar = re->elf; 7009 7010 if (re->options & RE_C) { 7011 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) { 7012 warnx("elf_getarsym() failed: %s", elf_errmsg(-1)); 7013 goto process_members; 7014 } 7015 printf("Index of archive %s: (%ju entries)\n", re->filename, 7016 (uintmax_t) sz - 1); 7017 off = 0; 7018 for (i = 0; (size_t) i < sz; i++) { 7019 if (arsym[i].as_name == NULL) 7020 break; 7021 if (arsym[i].as_off != off) { 7022 off = arsym[i].as_off; 7023 if (elf_rand(re->ar, off) != off) { 7024 warnx("elf_rand() failed: %s", 7025 elf_errmsg(-1)); 7026 continue; 7027 } 7028 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) == 7029 NULL) { 7030 warnx("elf_begin() failed: %s", 7031 elf_errmsg(-1)); 7032 continue; 7033 } 7034 if ((arhdr = elf_getarhdr(e)) == NULL) { 7035 warnx("elf_getarhdr() failed: %s", 7036 elf_errmsg(-1)); 7037 elf_end(e); 7038 continue; 7039 } 7040 printf("Binary %s(%s) contains:\n", 7041 re->filename, arhdr->ar_name); 7042 } 7043 printf("\t%s\n", arsym[i].as_name); 7044 } 7045 if (elf_rand(re->ar, SARMAG) != SARMAG) { 7046 warnx("elf_rand() failed: %s", elf_errmsg(-1)); 7047 return; 7048 } 7049 } 7050 7051 process_members: 7052 7053 if ((re->options & ~RE_C) == 0) 7054 return; 7055 7056 cmd = ELF_C_READ; 7057 while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) { 7058 if ((arhdr = elf_getarhdr(re->elf)) == NULL) { 7059 warnx("elf_getarhdr() failed: %s", elf_errmsg(-1)); 7060 goto next_member; 7061 } 7062 if (strcmp(arhdr->ar_name, "/") == 0 || 7063 strcmp(arhdr->ar_name, "//") == 0 || 7064 strcmp(arhdr->ar_name, "__.SYMDEF") == 0) 7065 goto next_member; 7066 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name); 7067 dump_elf(re); 7068 7069 next_member: 7070 cmd = elf_next(re->elf); 7071 elf_end(re->elf); 7072 } 7073 re->elf = re->ar; 7074 } 7075 7076 static void 7077 dump_object(struct readelf *re) 7078 { 7079 int fd; 7080 7081 if ((fd = open(re->filename, O_RDONLY)) == -1) { 7082 warn("open %s failed", re->filename); 7083 return; 7084 } 7085 7086 if ((re->flags & DISPLAY_FILENAME) != 0) 7087 printf("\nFile: %s\n", re->filename); 7088 7089 if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { 7090 warnx("elf_begin() failed: %s", elf_errmsg(-1)); 7091 return; 7092 } 7093 7094 switch (elf_kind(re->elf)) { 7095 case ELF_K_NONE: 7096 warnx("Not an ELF file."); 7097 return; 7098 case ELF_K_ELF: 7099 dump_elf(re); 7100 break; 7101 case ELF_K_AR: 7102 dump_ar(re, fd); 7103 break; 7104 default: 7105 warnx("Internal: libelf returned unknown elf kind."); 7106 return; 7107 } 7108 7109 elf_end(re->elf); 7110 } 7111 7112 static void 7113 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7114 { 7115 struct dumpop *d; 7116 7117 if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) { 7118 if ((d = calloc(1, sizeof(*d))) == NULL) 7119 err(EXIT_FAILURE, "calloc failed"); 7120 if (t == DUMP_BY_INDEX) 7121 d->u.si = si; 7122 else 7123 d->u.sn = sn; 7124 d->type = t; 7125 d->op = op; 7126 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list); 7127 } else 7128 d->op |= op; 7129 } 7130 7131 static struct dumpop * 7132 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7133 { 7134 struct dumpop *d; 7135 7136 STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) { 7137 if ((op == -1 || op & d->op) && 7138 (t == -1 || (unsigned) t == d->type)) { 7139 if ((d->type == DUMP_BY_INDEX && d->u.si == si) || 7140 (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn))) 7141 return (d); 7142 } 7143 } 7144 7145 return (NULL); 7146 } 7147 7148 static struct { 7149 const char *ln; 7150 char sn; 7151 int value; 7152 } dwarf_op[] = { 7153 {"rawline", 'l', DW_L}, 7154 {"decodedline", 'L', DW_LL}, 7155 {"info", 'i', DW_I}, 7156 {"abbrev", 'a', DW_A}, 7157 {"pubnames", 'p', DW_P}, 7158 {"aranges", 'r', DW_R}, 7159 {"ranges", 'r', DW_R}, 7160 {"Ranges", 'R', DW_RR}, 7161 {"macro", 'm', DW_M}, 7162 {"frames", 'f', DW_F}, 7163 {"frames-interp", 'F', DW_FF}, 7164 {"str", 's', DW_S}, 7165 {"loc", 'o', DW_O}, 7166 {NULL, 0, 0} 7167 }; 7168 7169 static void 7170 parse_dwarf_op_short(struct readelf *re, const char *op) 7171 { 7172 int i; 7173 7174 if (op == NULL) { 7175 re->dop |= DW_DEFAULT_OPTIONS; 7176 return; 7177 } 7178 7179 for (; *op != '\0'; op++) { 7180 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7181 if (dwarf_op[i].sn == *op) { 7182 re->dop |= dwarf_op[i].value; 7183 break; 7184 } 7185 } 7186 } 7187 } 7188 7189 static void 7190 parse_dwarf_op_long(struct readelf *re, const char *op) 7191 { 7192 char *p, *token, *bp; 7193 int i; 7194 7195 if (op == NULL) { 7196 re->dop |= DW_DEFAULT_OPTIONS; 7197 return; 7198 } 7199 7200 if ((p = strdup(op)) == NULL) 7201 err(EXIT_FAILURE, "strdup failed"); 7202 bp = p; 7203 7204 while ((token = strsep(&p, ",")) != NULL) { 7205 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7206 if (!strcmp(token, dwarf_op[i].ln)) { 7207 re->dop |= dwarf_op[i].value; 7208 break; 7209 } 7210 } 7211 } 7212 7213 free(bp); 7214 } 7215 7216 static uint64_t 7217 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7218 { 7219 uint64_t ret; 7220 uint8_t *src; 7221 7222 src = (uint8_t *) d->d_buf + *offsetp; 7223 7224 ret = 0; 7225 switch (bytes_to_read) { 7226 case 8: 7227 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7228 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7229 /* FALLTHROUGH */ 7230 case 4: 7231 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7232 /* FALLTHROUGH */ 7233 case 2: 7234 ret |= ((uint64_t) src[1]) << 8; 7235 /* FALLTHROUGH */ 7236 case 1: 7237 ret |= src[0]; 7238 break; 7239 default: 7240 return (0); 7241 } 7242 7243 *offsetp += bytes_to_read; 7244 7245 return (ret); 7246 } 7247 7248 static uint64_t 7249 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7250 { 7251 uint64_t ret; 7252 uint8_t *src; 7253 7254 src = (uint8_t *) d->d_buf + *offsetp; 7255 7256 switch (bytes_to_read) { 7257 case 1: 7258 ret = src[0]; 7259 break; 7260 case 2: 7261 ret = src[1] | ((uint64_t) src[0]) << 8; 7262 break; 7263 case 4: 7264 ret = src[3] | ((uint64_t) src[2]) << 8; 7265 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7266 break; 7267 case 8: 7268 ret = src[7] | ((uint64_t) src[6]) << 8; 7269 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7270 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7271 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7272 break; 7273 default: 7274 return (0); 7275 } 7276 7277 *offsetp += bytes_to_read; 7278 7279 return (ret); 7280 } 7281 7282 static uint64_t 7283 _decode_lsb(uint8_t **data, int bytes_to_read) 7284 { 7285 uint64_t ret; 7286 uint8_t *src; 7287 7288 src = *data; 7289 7290 ret = 0; 7291 switch (bytes_to_read) { 7292 case 8: 7293 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7294 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7295 /* FALLTHROUGH */ 7296 case 4: 7297 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7298 /* FALLTHROUGH */ 7299 case 2: 7300 ret |= ((uint64_t) src[1]) << 8; 7301 /* FALLTHROUGH */ 7302 case 1: 7303 ret |= src[0]; 7304 break; 7305 default: 7306 return (0); 7307 } 7308 7309 *data += bytes_to_read; 7310 7311 return (ret); 7312 } 7313 7314 static uint64_t 7315 _decode_msb(uint8_t **data, int bytes_to_read) 7316 { 7317 uint64_t ret; 7318 uint8_t *src; 7319 7320 src = *data; 7321 7322 ret = 0; 7323 switch (bytes_to_read) { 7324 case 1: 7325 ret = src[0]; 7326 break; 7327 case 2: 7328 ret = src[1] | ((uint64_t) src[0]) << 8; 7329 break; 7330 case 4: 7331 ret = src[3] | ((uint64_t) src[2]) << 8; 7332 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7333 break; 7334 case 8: 7335 ret = src[7] | ((uint64_t) src[6]) << 8; 7336 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7337 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7338 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7339 break; 7340 default: 7341 return (0); 7342 break; 7343 } 7344 7345 *data += bytes_to_read; 7346 7347 return (ret); 7348 } 7349 7350 static int64_t 7351 _decode_sleb128(uint8_t **dp, uint8_t *dpe) 7352 { 7353 int64_t ret = 0; 7354 uint8_t b = 0; 7355 int shift = 0; 7356 7357 uint8_t *src = *dp; 7358 7359 do { 7360 if (src >= dpe) 7361 break; 7362 b = *src++; 7363 ret |= ((b & 0x7f) << shift); 7364 shift += 7; 7365 } while ((b & 0x80) != 0); 7366 7367 if (shift < 32 && (b & 0x40) != 0) 7368 ret |= (-1 << shift); 7369 7370 *dp = src; 7371 7372 return (ret); 7373 } 7374 7375 static uint64_t 7376 _decode_uleb128(uint8_t **dp, uint8_t *dpe) 7377 { 7378 uint64_t ret = 0; 7379 uint8_t b; 7380 int shift = 0; 7381 7382 uint8_t *src = *dp; 7383 7384 do { 7385 if (src >= dpe) 7386 break; 7387 b = *src++; 7388 ret |= ((b & 0x7f) << shift); 7389 shift += 7; 7390 } while ((b & 0x80) != 0); 7391 7392 *dp = src; 7393 7394 return (ret); 7395 } 7396 7397 static void 7398 readelf_version(void) 7399 { 7400 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), 7401 elftc_version()); 7402 exit(EXIT_SUCCESS); 7403 } 7404 7405 #define USAGE_MESSAGE "\ 7406 Usage: %s [options] file...\n\ 7407 Display information about ELF objects and ar(1) archives.\n\n\ 7408 Options:\n\ 7409 -a | --all Equivalent to specifying options '-dhIlrsASV'.\n\ 7410 -c | --archive-index Print the archive symbol table for archives.\n\ 7411 -d | --dynamic Print the contents of SHT_DYNAMIC sections.\n\ 7412 -e | --headers Print all headers in the object.\n\ 7413 -g | --section-groups Print the contents of the section groups.\n\ 7414 -h | --file-header Print the file header for the object.\n\ 7415 -l | --program-headers Print the PHDR table for the object.\n\ 7416 -n | --notes Print the contents of SHT_NOTE sections.\n\ 7417 -p INDEX | --string-dump=INDEX\n\ 7418 Print the contents of section at index INDEX.\n\ 7419 -r | --relocs Print relocation information.\n\ 7420 -s | --syms | --symbols Print symbol tables.\n\ 7421 -t | --section-details Print additional information about sections.\n\ 7422 -v | --version Print a version identifier and exit.\n\ 7423 -w[afilmoprsFLR] | --debug-dump={abbrev,aranges,decodedline,frames,\n\ 7424 frames-interp,info,loc,macro,pubnames,\n\ 7425 ranges,Ranges,rawline,str}\n\ 7426 Display DWARF information.\n\ 7427 -x INDEX | --hex-dump=INDEX\n\ 7428 Display contents of a section as hexadecimal.\n\ 7429 -A | --arch-specific (accepted, but ignored)\n\ 7430 -D | --use-dynamic Print the symbol table specified by the DT_SYMTAB\n\ 7431 entry in the \".dynamic\" section.\n\ 7432 -H | --help Print a help message.\n\ 7433 -I | --histogram Print information on bucket list lengths for \n\ 7434 hash sections.\n\ 7435 -N | --full-section-name (accepted, but ignored)\n\ 7436 -S | --sections | --section-headers\n\ 7437 Print information about section headers.\n\ 7438 -V | --version-info Print symbol versoning information.\n\ 7439 -W | --wide Print information without wrapping long lines.\n" 7440 7441 7442 static void 7443 readelf_usage(int status) 7444 { 7445 fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME()); 7446 exit(status); 7447 } 7448 7449 int 7450 main(int argc, char **argv) 7451 { 7452 struct readelf *re, re_storage; 7453 unsigned long si; 7454 int opt, i; 7455 char *ep; 7456 7457 re = &re_storage; 7458 memset(re, 0, sizeof(*re)); 7459 STAILQ_INIT(&re->v_dumpop); 7460 7461 while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:", 7462 longopts, NULL)) != -1) { 7463 switch(opt) { 7464 case '?': 7465 readelf_usage(EXIT_SUCCESS); 7466 break; 7467 case 'A': 7468 re->options |= RE_AA; 7469 break; 7470 case 'a': 7471 re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II | 7472 RE_L | RE_R | RE_SS | RE_S | RE_VV; 7473 break; 7474 case 'c': 7475 re->options |= RE_C; 7476 break; 7477 case 'D': 7478 re->options |= RE_DD; 7479 break; 7480 case 'd': 7481 re->options |= RE_D; 7482 break; 7483 case 'e': 7484 re->options |= RE_H | RE_L | RE_SS; 7485 break; 7486 case 'g': 7487 re->options |= RE_G; 7488 break; 7489 case 'H': 7490 readelf_usage(EXIT_SUCCESS); 7491 break; 7492 case 'h': 7493 re->options |= RE_H; 7494 break; 7495 case 'I': 7496 re->options |= RE_II; 7497 break; 7498 case 'i': 7499 /* Not implemented yet. */ 7500 break; 7501 case 'l': 7502 re->options |= RE_L; 7503 break; 7504 case 'N': 7505 re->options |= RE_NN; 7506 break; 7507 case 'n': 7508 re->options |= RE_N; 7509 break; 7510 case 'p': 7511 re->options |= RE_P; 7512 si = strtoul(optarg, &ep, 10); 7513 if (*ep == '\0') 7514 add_dumpop(re, (size_t) si, NULL, STR_DUMP, 7515 DUMP_BY_INDEX); 7516 else 7517 add_dumpop(re, 0, optarg, STR_DUMP, 7518 DUMP_BY_NAME); 7519 break; 7520 case 'r': 7521 re->options |= RE_R; 7522 break; 7523 case 'S': 7524 re->options |= RE_SS; 7525 break; 7526 case 's': 7527 re->options |= RE_S; 7528 break; 7529 case 't': 7530 re->options |= RE_SS | RE_T; 7531 break; 7532 case 'u': 7533 re->options |= RE_U; 7534 break; 7535 case 'V': 7536 re->options |= RE_VV; 7537 break; 7538 case 'v': 7539 readelf_version(); 7540 break; 7541 case 'W': 7542 re->options |= RE_WW; 7543 break; 7544 case 'w': 7545 re->options |= RE_W; 7546 parse_dwarf_op_short(re, optarg); 7547 break; 7548 case 'x': 7549 re->options |= RE_X; 7550 si = strtoul(optarg, &ep, 10); 7551 if (*ep == '\0') 7552 add_dumpop(re, (size_t) si, NULL, HEX_DUMP, 7553 DUMP_BY_INDEX); 7554 else 7555 add_dumpop(re, 0, optarg, HEX_DUMP, 7556 DUMP_BY_NAME); 7557 break; 7558 case OPTION_DEBUG_DUMP: 7559 re->options |= RE_W; 7560 parse_dwarf_op_long(re, optarg); 7561 } 7562 } 7563 7564 argv += optind; 7565 argc -= optind; 7566 7567 if (argc == 0 || re->options == 0) 7568 readelf_usage(EXIT_FAILURE); 7569 7570 if (argc > 1) 7571 re->flags |= DISPLAY_FILENAME; 7572 7573 if (elf_version(EV_CURRENT) == EV_NONE) 7574 errx(EXIT_FAILURE, "ELF library initialization failed: %s", 7575 elf_errmsg(-1)); 7576 7577 for (i = 0; i < argc; i++) { 7578 re->filename = argv[i]; 7579 dump_object(re); 7580 } 7581 7582 exit(EXIT_SUCCESS); 7583 } 7584