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_PPC64: 2301 switch (e_flags) { 2302 case 0: printf(", Unspecified or Power ELF V1 ABI"); break; 2303 case 1: printf(", Power ELF V1 ABI"); break; 2304 case 2: printf(", OpenPOWER ELF V2 ABI"); break; 2305 default: break; 2306 } 2307 /* explicit fall through*/ 2308 case EM_PPC: 2309 edesc = powerpc_eflags_desc; 2310 break; 2311 case EM_RISCV: 2312 switch (e_flags & EF_RISCV_FLOAT_ABI_MASK) { 2313 case EF_RISCV_FLOAT_ABI_SOFT: 2314 printf(", soft-float ABI"); 2315 break; 2316 case EF_RISCV_FLOAT_ABI_SINGLE: 2317 printf(", single-float ABI"); 2318 break; 2319 case EF_RISCV_FLOAT_ABI_DOUBLE: 2320 printf(", double-float ABI"); 2321 break; 2322 case EF_RISCV_FLOAT_ABI_QUAD: 2323 printf(", quad-float ABI"); 2324 break; 2325 } 2326 edesc = riscv_eflags_desc; 2327 break; 2328 case EM_SPARC: 2329 case EM_SPARC32PLUS: 2330 case EM_SPARCV9: 2331 switch ((e_flags & EF_SPARCV9_MM)) { 2332 case EF_SPARCV9_TSO: printf(", tso"); break; 2333 case EF_SPARCV9_PSO: printf(", pso"); break; 2334 case EF_SPARCV9_MM: printf(", rmo"); break; 2335 default: break; 2336 } 2337 edesc = sparc_eflags_desc; 2338 break; 2339 default: 2340 break; 2341 } 2342 2343 if (edesc != NULL) { 2344 while (edesc->desc != NULL) { 2345 if (e_flags & edesc->flag) 2346 printf(", %s", edesc->desc); 2347 edesc++; 2348 } 2349 } 2350 } 2351 2352 static void 2353 dump_phdr(struct readelf *re) 2354 { 2355 const char *rawfile; 2356 GElf_Phdr phdr; 2357 size_t phnum, size; 2358 int i, j; 2359 2360 #define PH_HDR "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz", \ 2361 "MemSiz", "Flg", "Align" 2362 #define PH_CT phdr_type(re->ehdr.e_machine, phdr.p_type), \ 2363 (uintmax_t)phdr.p_offset, (uintmax_t)phdr.p_vaddr, \ 2364 (uintmax_t)phdr.p_paddr, (uintmax_t)phdr.p_filesz, \ 2365 (uintmax_t)phdr.p_memsz, \ 2366 phdr.p_flags & PF_R ? 'R' : ' ', \ 2367 phdr.p_flags & PF_W ? 'W' : ' ', \ 2368 phdr.p_flags & PF_X ? 'E' : ' ', \ 2369 (uintmax_t)phdr.p_align 2370 2371 if (elf_getphnum(re->elf, &phnum) == 0) { 2372 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 2373 return; 2374 } 2375 if (phnum == 0) { 2376 printf("\nThere are no program headers in this file.\n"); 2377 return; 2378 } 2379 2380 printf("\nElf file type is %s", elf_type(re->ehdr.e_type)); 2381 printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry); 2382 printf("There are %ju program headers, starting at offset %ju\n", 2383 (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff); 2384 2385 /* Dump program headers. */ 2386 printf("\nProgram Headers:\n"); 2387 if (re->ec == ELFCLASS32) 2388 printf(" %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR); 2389 else if (re->options & RE_WW) 2390 printf(" %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR); 2391 else 2392 printf(" %-15s%-19s%-19s%s\n %-19s%-20s" 2393 "%-7s%s\n", PH_HDR); 2394 for (i = 0; (size_t) i < phnum; i++) { 2395 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2396 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2397 continue; 2398 } 2399 /* TODO: Add arch-specific segment type dump. */ 2400 if (re->ec == ELFCLASS32) 2401 printf(" %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx " 2402 "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT); 2403 else if (re->options & RE_WW) 2404 printf(" %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx " 2405 "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT); 2406 else 2407 printf(" %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n" 2408 " 0x%16.16jx 0x%16.16jx %c%c%c" 2409 " %#jx\n", PH_CT); 2410 if (phdr.p_type == PT_INTERP) { 2411 if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) { 2412 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 2413 continue; 2414 } 2415 if (phdr.p_offset >= size) { 2416 warnx("invalid program header offset"); 2417 continue; 2418 } 2419 printf(" [Requesting program interpreter: %s]\n", 2420 rawfile + phdr.p_offset); 2421 } 2422 } 2423 2424 /* Dump section to segment mapping. */ 2425 if (re->shnum == 0) 2426 return; 2427 printf("\n Section to Segment mapping:\n"); 2428 printf(" Segment Sections...\n"); 2429 for (i = 0; (size_t)i < phnum; i++) { 2430 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2431 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2432 continue; 2433 } 2434 printf(" %2.2d ", i); 2435 /* skip NULL section. */ 2436 for (j = 1; (size_t)j < re->shnum; j++) { 2437 if (re->sl[j].off < phdr.p_offset) 2438 continue; 2439 if (re->sl[j].off + re->sl[j].sz > 2440 phdr.p_offset + phdr.p_filesz && 2441 re->sl[j].type != SHT_NOBITS) 2442 continue; 2443 if (re->sl[j].addr < phdr.p_vaddr || 2444 re->sl[j].addr + re->sl[j].sz > 2445 phdr.p_vaddr + phdr.p_memsz) 2446 continue; 2447 if (phdr.p_type == PT_TLS && 2448 (re->sl[j].flags & SHF_TLS) == 0) 2449 continue; 2450 printf("%s ", re->sl[j].name); 2451 } 2452 printf("\n"); 2453 } 2454 #undef PH_HDR 2455 #undef PH_CT 2456 } 2457 2458 static char * 2459 section_flags(struct readelf *re, struct section *s) 2460 { 2461 #define BUF_SZ 256 2462 static char buf[BUF_SZ]; 2463 int i, p, nb; 2464 2465 p = 0; 2466 nb = re->ec == ELFCLASS32 ? 8 : 16; 2467 if (re->options & RE_T) { 2468 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb, 2469 (uintmax_t)s->flags); 2470 p += nb + 4; 2471 } 2472 for (i = 0; section_flag[i].ln != NULL; i++) { 2473 if ((s->flags & section_flag[i].value) == 0) 2474 continue; 2475 if (re->options & RE_T) { 2476 snprintf(&buf[p], BUF_SZ - p, "%s, ", 2477 section_flag[i].ln); 2478 p += strlen(section_flag[i].ln) + 2; 2479 } else 2480 buf[p++] = section_flag[i].sn; 2481 } 2482 if (re->options & RE_T && p > nb + 4) 2483 p -= 2; 2484 buf[p] = '\0'; 2485 2486 return (buf); 2487 } 2488 2489 static void 2490 dump_shdr(struct readelf *re) 2491 { 2492 struct section *s; 2493 int i; 2494 2495 #define S_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2496 "Flg", "Lk", "Inf", "Al" 2497 #define S_HDRL "[Nr] Name", "Type", "Address", "Offset", "Size", \ 2498 "EntSize", "Flags", "Link", "Info", "Align" 2499 #define ST_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2500 "Lk", "Inf", "Al", "Flags" 2501 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link", \ 2502 "Size", "EntSize", "Info", "Align", "Flags" 2503 #define S_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2504 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2505 (uintmax_t)s->entsize, section_flags(re, s), \ 2506 s->link, s->info, (uintmax_t)s->align 2507 #define ST_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2508 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2509 (uintmax_t)s->entsize, s->link, s->info, \ 2510 (uintmax_t)s->align, section_flags(re, s) 2511 #define ST_CTL i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2512 (uintmax_t)s->addr, (uintmax_t)s->off, s->link, \ 2513 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info, \ 2514 (uintmax_t)s->align, section_flags(re, s) 2515 2516 if (re->shnum == 0) { 2517 printf("\nThere are no sections in this file.\n"); 2518 return; 2519 } 2520 printf("There are %ju section headers, starting at offset 0x%jx:\n", 2521 (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff); 2522 printf("\nSection Headers:\n"); 2523 if (re->ec == ELFCLASS32) { 2524 if (re->options & RE_T) 2525 printf(" %s\n %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n" 2526 "%12s\n", ST_HDR); 2527 else 2528 printf(" %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2529 S_HDR); 2530 } else if (re->options & RE_WW) { 2531 if (re->options & RE_T) 2532 printf(" %s\n %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n" 2533 "%12s\n", ST_HDR); 2534 else 2535 printf(" %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2536 S_HDR); 2537 } else { 2538 if (re->options & RE_T) 2539 printf(" %s\n %-18s%-17s%-18s%s\n %-18s" 2540 "%-17s%-18s%s\n%12s\n", ST_HDRL); 2541 else 2542 printf(" %-23s%-17s%-18s%s\n %-18s%-17s%-7s%" 2543 "-6s%-6s%s\n", S_HDRL); 2544 } 2545 for (i = 0; (size_t)i < re->shnum; i++) { 2546 s = &re->sl[i]; 2547 if (re->ec == ELFCLASS32) { 2548 if (re->options & RE_T) 2549 printf(" [%2d] %s\n %-15.15s %8.8jx" 2550 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2551 " %s\n", ST_CT); 2552 else 2553 printf(" [%2d] %-17.17s %-15.15s %8.8jx" 2554 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2555 S_CT); 2556 } else if (re->options & RE_WW) { 2557 if (re->options & RE_T) 2558 printf(" [%2d] %s\n %-15.15s %16.16jx" 2559 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2560 " %s\n", ST_CT); 2561 else 2562 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2563 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2564 S_CT); 2565 } else { 2566 if (re->options & RE_T) 2567 printf(" [%2d] %s\n %-15.15s %16.16jx" 2568 " %16.16jx %u\n %16.16jx %16.16jx" 2569 " %-16u %ju\n %s\n", ST_CTL); 2570 else 2571 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2572 " %8.8jx\n %16.16jx %16.16jx " 2573 "%3s %2u %3u %ju\n", S_CT); 2574 } 2575 } 2576 if ((re->options & RE_T) == 0) 2577 printf("Key to Flags:\n W (write), A (alloc)," 2578 " X (execute), M (merge), S (strings)\n" 2579 " I (info), L (link order), G (group), x (unknown)\n" 2580 " O (extra OS processing required)" 2581 " o (OS specific), p (processor specific)\n"); 2582 2583 #undef S_HDR 2584 #undef S_HDRL 2585 #undef ST_HDR 2586 #undef ST_HDRL 2587 #undef S_CT 2588 #undef ST_CT 2589 #undef ST_CTL 2590 } 2591 2592 /* 2593 * Return number of entries in the given section. We'd prefer ent_count be a 2594 * size_t *, but libelf APIs already use int for section indices. 2595 */ 2596 static int 2597 get_ent_count(struct section *s, int *ent_count) 2598 { 2599 if (s->entsize == 0) { 2600 warnx("section %s has entry size 0", s->name); 2601 return (0); 2602 } else if (s->sz / s->entsize > INT_MAX) { 2603 warnx("section %s has invalid section count", s->name); 2604 return (0); 2605 } 2606 *ent_count = (int)(s->sz / s->entsize); 2607 return (1); 2608 } 2609 2610 static void 2611 dump_dynamic(struct readelf *re) 2612 { 2613 GElf_Dyn dyn; 2614 Elf_Data *d; 2615 struct section *s; 2616 int elferr, i, is_dynamic, j, jmax, nentries; 2617 2618 is_dynamic = 0; 2619 2620 for (i = 0; (size_t)i < re->shnum; i++) { 2621 s = &re->sl[i]; 2622 if (s->type != SHT_DYNAMIC) 2623 continue; 2624 (void) elf_errno(); 2625 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2626 elferr = elf_errno(); 2627 if (elferr != 0) 2628 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 2629 continue; 2630 } 2631 if (d->d_size <= 0) 2632 continue; 2633 2634 is_dynamic = 1; 2635 2636 /* Determine the actual number of table entries. */ 2637 nentries = 0; 2638 if (!get_ent_count(s, &jmax)) 2639 continue; 2640 for (j = 0; j < jmax; j++) { 2641 if (gelf_getdyn(d, j, &dyn) != &dyn) { 2642 warnx("gelf_getdyn failed: %s", 2643 elf_errmsg(-1)); 2644 continue; 2645 } 2646 nentries ++; 2647 if (dyn.d_tag == DT_NULL) 2648 break; 2649 } 2650 2651 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off); 2652 printf(" contains %u entries:\n", nentries); 2653 2654 if (re->ec == ELFCLASS32) 2655 printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value"); 2656 else 2657 printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value"); 2658 2659 for (j = 0; j < nentries; j++) { 2660 if (gelf_getdyn(d, j, &dyn) != &dyn) 2661 continue; 2662 /* Dump dynamic entry type. */ 2663 if (re->ec == ELFCLASS32) 2664 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag); 2665 else 2666 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag); 2667 printf(" %-20s", dt_type(re->ehdr.e_machine, 2668 dyn.d_tag)); 2669 /* Dump dynamic entry value. */ 2670 dump_dyn_val(re, &dyn, s->link); 2671 } 2672 } 2673 2674 if (!is_dynamic) 2675 printf("\nThere is no dynamic section in this file.\n"); 2676 } 2677 2678 static char * 2679 timestamp(time_t ti) 2680 { 2681 static char ts[32]; 2682 struct tm *t; 2683 2684 t = gmtime(&ti); 2685 snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d", 2686 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, 2687 t->tm_min, t->tm_sec); 2688 2689 return (ts); 2690 } 2691 2692 static const char * 2693 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val) 2694 { 2695 const char *name; 2696 2697 if (stab == SHN_UNDEF) 2698 name = "ERROR"; 2699 else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) { 2700 (void) elf_errno(); /* clear error */ 2701 name = "ERROR"; 2702 } 2703 2704 return (name); 2705 } 2706 2707 static void 2708 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn) 2709 { 2710 switch (re->ehdr.e_machine) { 2711 case EM_MIPS: 2712 case EM_MIPS_RS3_LE: 2713 switch (dyn->d_tag) { 2714 case DT_MIPS_RLD_VERSION: 2715 case DT_MIPS_LOCAL_GOTNO: 2716 case DT_MIPS_CONFLICTNO: 2717 case DT_MIPS_LIBLISTNO: 2718 case DT_MIPS_SYMTABNO: 2719 case DT_MIPS_UNREFEXTNO: 2720 case DT_MIPS_GOTSYM: 2721 case DT_MIPS_HIPAGENO: 2722 case DT_MIPS_DELTA_CLASS_NO: 2723 case DT_MIPS_DELTA_INSTANCE_NO: 2724 case DT_MIPS_DELTA_RELOC_NO: 2725 case DT_MIPS_DELTA_SYM_NO: 2726 case DT_MIPS_DELTA_CLASSSYM_NO: 2727 case DT_MIPS_LOCALPAGE_GOTIDX: 2728 case DT_MIPS_LOCAL_GOTIDX: 2729 case DT_MIPS_HIDDEN_GOTIDX: 2730 case DT_MIPS_PROTECTED_GOTIDX: 2731 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2732 break; 2733 case DT_MIPS_ICHECKSUM: 2734 case DT_MIPS_FLAGS: 2735 case DT_MIPS_BASE_ADDRESS: 2736 case DT_MIPS_CONFLICT: 2737 case DT_MIPS_LIBLIST: 2738 case DT_MIPS_RLD_MAP: 2739 case DT_MIPS_DELTA_CLASS: 2740 case DT_MIPS_DELTA_INSTANCE: 2741 case DT_MIPS_DELTA_RELOC: 2742 case DT_MIPS_DELTA_SYM: 2743 case DT_MIPS_DELTA_CLASSSYM: 2744 case DT_MIPS_CXX_FLAGS: 2745 case DT_MIPS_PIXIE_INIT: 2746 case DT_MIPS_SYMBOL_LIB: 2747 case DT_MIPS_OPTIONS: 2748 case DT_MIPS_INTERFACE: 2749 case DT_MIPS_DYNSTR_ALIGN: 2750 case DT_MIPS_INTERFACE_SIZE: 2751 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2752 case DT_MIPS_COMPACT_SIZE: 2753 case DT_MIPS_GP_VALUE: 2754 case DT_MIPS_AUX_DYNAMIC: 2755 case DT_MIPS_PLTGOT: 2756 case DT_MIPS_RLD_OBJ_UPDATE: 2757 case DT_MIPS_RWPLT: 2758 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2759 break; 2760 case DT_MIPS_IVERSION: 2761 case DT_MIPS_PERF_SUFFIX: 2762 case DT_MIPS_TIME_STAMP: 2763 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2764 break; 2765 default: 2766 printf("\n"); 2767 break; 2768 } 2769 break; 2770 default: 2771 printf("\n"); 2772 break; 2773 } 2774 } 2775 2776 static void 2777 dump_flags(struct flag_desc *desc, uint64_t val) 2778 { 2779 struct flag_desc *fd; 2780 2781 for (fd = desc; fd->flag != 0; fd++) { 2782 if (val & fd->flag) { 2783 val &= ~fd->flag; 2784 printf(" %s", fd->desc); 2785 } 2786 } 2787 if (val != 0) 2788 printf(" unknown (0x%jx)", (uintmax_t)val); 2789 printf("\n"); 2790 } 2791 2792 static struct flag_desc dt_flags[] = { 2793 { DF_ORIGIN, "ORIGIN" }, 2794 { DF_SYMBOLIC, "SYMBOLIC" }, 2795 { DF_TEXTREL, "TEXTREL" }, 2796 { DF_BIND_NOW, "BIND_NOW" }, 2797 { DF_STATIC_TLS, "STATIC_TLS" }, 2798 { 0, NULL } 2799 }; 2800 2801 static struct flag_desc dt_flags_1[] = { 2802 { DF_1_BIND_NOW, "NOW" }, 2803 { DF_1_GLOBAL, "GLOBAL" }, 2804 { 0x4, "GROUP" }, 2805 { DF_1_NODELETE, "NODELETE" }, 2806 { DF_1_LOADFLTR, "LOADFLTR" }, 2807 { 0x20, "INITFIRST" }, 2808 { DF_1_NOOPEN, "NOOPEN" }, 2809 { DF_1_ORIGIN, "ORIGIN" }, 2810 { 0x100, "DIRECT" }, 2811 { DF_1_INTERPOSE, "INTERPOSE" }, 2812 { DF_1_NODEFLIB, "NODEFLIB" }, 2813 { 0x1000, "NODUMP" }, 2814 { 0x2000, "CONFALT" }, 2815 { 0x4000, "ENDFILTEE" }, 2816 { 0x8000, "DISPRELDNE" }, 2817 { 0x10000, "DISPRELPND" }, 2818 { 0x20000, "NODIRECT" }, 2819 { 0x40000, "IGNMULDEF" }, 2820 { 0x80000, "NOKSYMS" }, 2821 { 0x100000, "NOHDR" }, 2822 { 0x200000, "EDITED" }, 2823 { 0x400000, "NORELOC" }, 2824 { 0x800000, "SYMINTPOSE" }, 2825 { 0x1000000, "GLOBAUDIT" }, 2826 { 0, NULL } 2827 }; 2828 2829 static void 2830 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab) 2831 { 2832 const char *name; 2833 2834 if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC && 2835 dyn->d_tag != DT_AUXILIARY && dyn->d_tag != DT_FILTER) { 2836 dump_arch_dyn_val(re, dyn); 2837 return; 2838 } 2839 2840 /* These entry values are index into the string table. */ 2841 name = NULL; 2842 if (dyn->d_tag == DT_AUXILIARY || dyn->d_tag == DT_FILTER || 2843 dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME || 2844 dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH) 2845 name = dyn_str(re, stab, dyn->d_un.d_val); 2846 2847 switch(dyn->d_tag) { 2848 case DT_NULL: 2849 case DT_PLTGOT: 2850 case DT_HASH: 2851 case DT_STRTAB: 2852 case DT_SYMTAB: 2853 case DT_RELA: 2854 case DT_INIT: 2855 case DT_SYMBOLIC: 2856 case DT_REL: 2857 case DT_DEBUG: 2858 case DT_TEXTREL: 2859 case DT_JMPREL: 2860 case DT_FINI: 2861 case DT_VERDEF: 2862 case DT_VERNEED: 2863 case DT_VERSYM: 2864 case DT_GNU_HASH: 2865 case DT_GNU_LIBLIST: 2866 case DT_GNU_CONFLICT: 2867 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2868 break; 2869 case DT_PLTRELSZ: 2870 case DT_RELASZ: 2871 case DT_RELAENT: 2872 case DT_STRSZ: 2873 case DT_SYMENT: 2874 case DT_RELSZ: 2875 case DT_RELENT: 2876 case DT_PREINIT_ARRAYSZ: 2877 case DT_INIT_ARRAYSZ: 2878 case DT_FINI_ARRAYSZ: 2879 case DT_GNU_CONFLICTSZ: 2880 case DT_GNU_LIBLISTSZ: 2881 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val); 2882 break; 2883 case DT_RELACOUNT: 2884 case DT_RELCOUNT: 2885 case DT_VERDEFNUM: 2886 case DT_VERNEEDNUM: 2887 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2888 break; 2889 case DT_AUXILIARY: 2890 printf(" Auxiliary library: [%s]\n", name); 2891 break; 2892 case DT_FILTER: 2893 printf(" Filter library: [%s]\n", name); 2894 break; 2895 case DT_NEEDED: 2896 printf(" Shared library: [%s]\n", name); 2897 break; 2898 case DT_SONAME: 2899 printf(" Library soname: [%s]\n", name); 2900 break; 2901 case DT_RPATH: 2902 printf(" Library rpath: [%s]\n", name); 2903 break; 2904 case DT_RUNPATH: 2905 printf(" Library runpath: [%s]\n", name); 2906 break; 2907 case DT_PLTREL: 2908 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val)); 2909 break; 2910 case DT_GNU_PRELINKED: 2911 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2912 break; 2913 case DT_FLAGS: 2914 dump_flags(dt_flags, dyn->d_un.d_val); 2915 break; 2916 case DT_FLAGS_1: 2917 dump_flags(dt_flags_1, dyn->d_un.d_val); 2918 break; 2919 default: 2920 printf("\n"); 2921 } 2922 } 2923 2924 static void 2925 dump_rel(struct readelf *re, struct section *s, Elf_Data *d) 2926 { 2927 GElf_Rel r; 2928 const char *symname; 2929 uint64_t symval; 2930 int i, len; 2931 uint32_t type; 2932 uint8_t type2, type3; 2933 2934 if (s->link >= re->shnum) 2935 return; 2936 2937 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name" 2938 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2939 elftc_reloc_type_str(re->ehdr.e_machine, \ 2940 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2941 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2942 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 2943 (uintmax_t)symval, symname 2944 2945 printf("\nRelocation section (%s):\n", s->name); 2946 if (re->ec == ELFCLASS32) 2947 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR); 2948 else { 2949 if (re->options & RE_WW) 2950 printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR); 2951 else 2952 printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR); 2953 } 2954 assert(d->d_size == s->sz); 2955 if (!get_ent_count(s, &len)) 2956 return; 2957 for (i = 0; i < len; i++) { 2958 if (gelf_getrel(d, i, &r) != &r) { 2959 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 2960 continue; 2961 } 2962 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 2963 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 2964 if (re->ec == ELFCLASS32) { 2965 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 2966 ELF64_R_TYPE(r.r_info)); 2967 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32); 2968 } else { 2969 type = ELF64_R_TYPE(r.r_info); 2970 if (re->ehdr.e_machine == EM_MIPS) { 2971 type2 = (type >> 8) & 0xFF; 2972 type3 = (type >> 16) & 0xFF; 2973 type = type & 0xFF; 2974 } else { 2975 type2 = type3 = 0; 2976 } 2977 if (re->options & RE_WW) 2978 printf("%16.16jx %16.16jx %-24.24s" 2979 " %16.16jx %s\n", REL_CT64); 2980 else 2981 printf("%12.12jx %12.12jx %-19.19s" 2982 " %16.16jx %s\n", REL_CT64); 2983 if (re->ehdr.e_machine == EM_MIPS) { 2984 if (re->options & RE_WW) { 2985 printf("%32s: %s\n", "Type2", 2986 elftc_reloc_type_str(EM_MIPS, 2987 type2)); 2988 printf("%32s: %s\n", "Type3", 2989 elftc_reloc_type_str(EM_MIPS, 2990 type3)); 2991 } else { 2992 printf("%24s: %s\n", "Type2", 2993 elftc_reloc_type_str(EM_MIPS, 2994 type2)); 2995 printf("%24s: %s\n", "Type3", 2996 elftc_reloc_type_str(EM_MIPS, 2997 type3)); 2998 } 2999 } 3000 } 3001 } 3002 3003 #undef REL_HDR 3004 #undef REL_CT 3005 } 3006 3007 static void 3008 dump_rela(struct readelf *re, struct section *s, Elf_Data *d) 3009 { 3010 GElf_Rela r; 3011 const char *symname; 3012 uint64_t symval; 3013 int i, len; 3014 uint32_t type; 3015 uint8_t type2, type3; 3016 3017 if (s->link >= re->shnum) 3018 return; 3019 3020 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \ 3021 "st_name + r_addend" 3022 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3023 elftc_reloc_type_str(re->ehdr.e_machine, \ 3024 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 3025 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3026 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 3027 (uintmax_t)symval, symname 3028 3029 printf("\nRelocation section with addend (%s):\n", s->name); 3030 if (re->ec == ELFCLASS32) 3031 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR); 3032 else { 3033 if (re->options & RE_WW) 3034 printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR); 3035 else 3036 printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR); 3037 } 3038 assert(d->d_size == s->sz); 3039 if (!get_ent_count(s, &len)) 3040 return; 3041 for (i = 0; i < len; i++) { 3042 if (gelf_getrela(d, i, &r) != &r) { 3043 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 3044 continue; 3045 } 3046 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 3047 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 3048 if (re->ec == ELFCLASS32) { 3049 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 3050 ELF64_R_TYPE(r.r_info)); 3051 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32); 3052 printf(" + %x\n", (uint32_t) r.r_addend); 3053 } else { 3054 type = ELF64_R_TYPE(r.r_info); 3055 if (re->ehdr.e_machine == EM_MIPS) { 3056 type2 = (type >> 8) & 0xFF; 3057 type3 = (type >> 16) & 0xFF; 3058 type = type & 0xFF; 3059 } else { 3060 type2 = type3 = 0; 3061 } 3062 if (re->options & RE_WW) 3063 printf("%16.16jx %16.16jx %-24.24s" 3064 " %16.16jx %s", RELA_CT64); 3065 else 3066 printf("%12.12jx %12.12jx %-19.19s" 3067 " %16.16jx %s", RELA_CT64); 3068 printf(" + %jx\n", (uintmax_t) r.r_addend); 3069 if (re->ehdr.e_machine == EM_MIPS) { 3070 if (re->options & RE_WW) { 3071 printf("%32s: %s\n", "Type2", 3072 elftc_reloc_type_str(EM_MIPS, 3073 type2)); 3074 printf("%32s: %s\n", "Type3", 3075 elftc_reloc_type_str(EM_MIPS, 3076 type3)); 3077 } else { 3078 printf("%24s: %s\n", "Type2", 3079 elftc_reloc_type_str(EM_MIPS, 3080 type2)); 3081 printf("%24s: %s\n", "Type3", 3082 elftc_reloc_type_str(EM_MIPS, 3083 type3)); 3084 } 3085 } 3086 } 3087 } 3088 3089 #undef RELA_HDR 3090 #undef RELA_CT 3091 } 3092 3093 static void 3094 dump_reloc(struct readelf *re) 3095 { 3096 struct section *s; 3097 Elf_Data *d; 3098 int i, elferr; 3099 3100 for (i = 0; (size_t)i < re->shnum; i++) { 3101 s = &re->sl[i]; 3102 if (s->type == SHT_REL || s->type == SHT_RELA) { 3103 (void) elf_errno(); 3104 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3105 elferr = elf_errno(); 3106 if (elferr != 0) 3107 warnx("elf_getdata failed: %s", 3108 elf_errmsg(elferr)); 3109 continue; 3110 } 3111 if (s->type == SHT_REL) 3112 dump_rel(re, s, d); 3113 else 3114 dump_rela(re, s, d); 3115 } 3116 } 3117 } 3118 3119 static void 3120 dump_symtab(struct readelf *re, int i) 3121 { 3122 struct section *s; 3123 Elf_Data *d; 3124 GElf_Sym sym; 3125 const char *name; 3126 uint32_t stab; 3127 int elferr, j, len; 3128 uint16_t vs; 3129 3130 s = &re->sl[i]; 3131 if (s->link >= re->shnum) 3132 return; 3133 stab = s->link; 3134 (void) elf_errno(); 3135 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3136 elferr = elf_errno(); 3137 if (elferr != 0) 3138 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3139 return; 3140 } 3141 if (d->d_size <= 0) 3142 return; 3143 if (!get_ent_count(s, &len)) 3144 return; 3145 printf("Symbol table (%s)", s->name); 3146 printf(" contains %d entries:\n", len); 3147 printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type", 3148 "Bind", "Vis", "Ndx", "Name"); 3149 3150 for (j = 0; j < len; j++) { 3151 if (gelf_getsym(d, j, &sym) != &sym) { 3152 warnx("gelf_getsym failed: %s", elf_errmsg(-1)); 3153 continue; 3154 } 3155 printf("%6d:", j); 3156 printf(" %16.16jx", (uintmax_t) sym.st_value); 3157 printf(" %5ju", (uintmax_t) sym.st_size); 3158 printf(" %-7s", st_type(re->ehdr.e_machine, 3159 re->ehdr.e_ident[EI_OSABI], GELF_ST_TYPE(sym.st_info))); 3160 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info))); 3161 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other))); 3162 printf(" %3s", st_shndx(sym.st_shndx)); 3163 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL) 3164 printf(" %s", name); 3165 /* Append symbol version string for SHT_DYNSYM symbol table. */ 3166 if (s->type == SHT_DYNSYM && re->ver != NULL && 3167 re->vs != NULL && re->vs[j] > 1) { 3168 vs = re->vs[j] & VERSYM_VERSION; 3169 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3170 warnx("invalid versym version index %u", vs); 3171 break; 3172 } 3173 if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0) 3174 printf("@%s (%d)", re->ver[vs].name, vs); 3175 else 3176 printf("@@%s (%d)", re->ver[vs].name, vs); 3177 } 3178 putchar('\n'); 3179 } 3180 3181 } 3182 3183 static void 3184 dump_symtabs(struct readelf *re) 3185 { 3186 GElf_Dyn dyn; 3187 Elf_Data *d; 3188 struct section *s; 3189 uint64_t dyn_off; 3190 int elferr, i, len; 3191 3192 /* 3193 * If -D is specified, only dump the symbol table specified by 3194 * the DT_SYMTAB entry in the .dynamic section. 3195 */ 3196 dyn_off = 0; 3197 if (re->options & RE_DD) { 3198 s = NULL; 3199 for (i = 0; (size_t)i < re->shnum; i++) 3200 if (re->sl[i].type == SHT_DYNAMIC) { 3201 s = &re->sl[i]; 3202 break; 3203 } 3204 if (s == NULL) 3205 return; 3206 (void) elf_errno(); 3207 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3208 elferr = elf_errno(); 3209 if (elferr != 0) 3210 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 3211 return; 3212 } 3213 if (d->d_size <= 0) 3214 return; 3215 if (!get_ent_count(s, &len)) 3216 return; 3217 3218 for (i = 0; i < len; i++) { 3219 if (gelf_getdyn(d, i, &dyn) != &dyn) { 3220 warnx("gelf_getdyn failed: %s", elf_errmsg(-1)); 3221 continue; 3222 } 3223 if (dyn.d_tag == DT_SYMTAB) { 3224 dyn_off = dyn.d_un.d_val; 3225 break; 3226 } 3227 } 3228 } 3229 3230 /* Find and dump symbol tables. */ 3231 for (i = 0; (size_t)i < re->shnum; i++) { 3232 s = &re->sl[i]; 3233 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) { 3234 if (re->options & RE_DD) { 3235 if (dyn_off == s->addr) { 3236 dump_symtab(re, i); 3237 break; 3238 } 3239 } else 3240 dump_symtab(re, i); 3241 } 3242 } 3243 } 3244 3245 static void 3246 dump_svr4_hash(struct section *s) 3247 { 3248 Elf_Data *d; 3249 uint32_t *buf; 3250 uint32_t nbucket, nchain; 3251 uint32_t *bucket, *chain; 3252 uint32_t *bl, *c, maxl, total; 3253 int elferr, i, j; 3254 3255 /* Read and parse the content of .hash section. */ 3256 (void) elf_errno(); 3257 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3258 elferr = elf_errno(); 3259 if (elferr != 0) 3260 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3261 return; 3262 } 3263 if (d->d_size < 2 * sizeof(uint32_t)) { 3264 warnx(".hash section too small"); 3265 return; 3266 } 3267 buf = d->d_buf; 3268 nbucket = buf[0]; 3269 nchain = buf[1]; 3270 if (nbucket <= 0 || nchain <= 0) { 3271 warnx("Malformed .hash section"); 3272 return; 3273 } 3274 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3275 warnx("Malformed .hash section"); 3276 return; 3277 } 3278 bucket = &buf[2]; 3279 chain = &buf[2 + nbucket]; 3280 3281 maxl = 0; 3282 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3283 errx(EXIT_FAILURE, "calloc failed"); 3284 for (i = 0; (uint32_t)i < nbucket; i++) 3285 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3286 if (++bl[i] > maxl) 3287 maxl = bl[i]; 3288 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3289 errx(EXIT_FAILURE, "calloc failed"); 3290 for (i = 0; (uint32_t)i < nbucket; i++) 3291 c[bl[i]]++; 3292 printf("\nHistogram for bucket list length (total of %u buckets):\n", 3293 nbucket); 3294 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3295 total = 0; 3296 for (i = 0; (uint32_t)i <= maxl; i++) { 3297 total += c[i] * i; 3298 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3299 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3300 } 3301 free(c); 3302 free(bl); 3303 } 3304 3305 static void 3306 dump_svr4_hash64(struct readelf *re, struct section *s) 3307 { 3308 Elf_Data *d, dst; 3309 uint64_t *buf; 3310 uint64_t nbucket, nchain; 3311 uint64_t *bucket, *chain; 3312 uint64_t *bl, *c, maxl, total; 3313 int elferr, i, j; 3314 3315 /* 3316 * ALPHA uses 64-bit hash entries. Since libelf assumes that 3317 * .hash section contains only 32-bit entry, an explicit 3318 * gelf_xlatetom is needed here. 3319 */ 3320 (void) elf_errno(); 3321 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 3322 elferr = elf_errno(); 3323 if (elferr != 0) 3324 warnx("elf_rawdata failed: %s", 3325 elf_errmsg(elferr)); 3326 return; 3327 } 3328 d->d_type = ELF_T_XWORD; 3329 memcpy(&dst, d, sizeof(Elf_Data)); 3330 if (gelf_xlatetom(re->elf, &dst, d, 3331 re->ehdr.e_ident[EI_DATA]) != &dst) { 3332 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1)); 3333 return; 3334 } 3335 if (dst.d_size < 2 * sizeof(uint64_t)) { 3336 warnx(".hash section too small"); 3337 return; 3338 } 3339 buf = dst.d_buf; 3340 nbucket = buf[0]; 3341 nchain = buf[1]; 3342 if (nbucket <= 0 || nchain <= 0) { 3343 warnx("Malformed .hash section"); 3344 return; 3345 } 3346 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3347 warnx("Malformed .hash section"); 3348 return; 3349 } 3350 bucket = &buf[2]; 3351 chain = &buf[2 + nbucket]; 3352 3353 maxl = 0; 3354 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3355 errx(EXIT_FAILURE, "calloc failed"); 3356 for (i = 0; (uint32_t)i < nbucket; i++) 3357 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3358 if (++bl[i] > maxl) 3359 maxl = bl[i]; 3360 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3361 errx(EXIT_FAILURE, "calloc failed"); 3362 for (i = 0; (uint64_t)i < nbucket; i++) 3363 c[bl[i]]++; 3364 printf("Histogram for bucket list length (total of %ju buckets):\n", 3365 (uintmax_t)nbucket); 3366 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3367 total = 0; 3368 for (i = 0; (uint64_t)i <= maxl; i++) { 3369 total += c[i] * i; 3370 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i], 3371 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3372 } 3373 free(c); 3374 free(bl); 3375 } 3376 3377 static void 3378 dump_gnu_hash(struct readelf *re, struct section *s) 3379 { 3380 struct section *ds; 3381 Elf_Data *d; 3382 uint32_t *buf; 3383 uint32_t *bucket, *chain; 3384 uint32_t nbucket, nchain, symndx, maskwords; 3385 uint32_t *bl, *c, maxl, total; 3386 int elferr, dynsymcount, i, j; 3387 3388 (void) elf_errno(); 3389 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3390 elferr = elf_errno(); 3391 if (elferr != 0) 3392 warnx("elf_getdata failed: %s", 3393 elf_errmsg(elferr)); 3394 return; 3395 } 3396 if (d->d_size < 4 * sizeof(uint32_t)) { 3397 warnx(".gnu.hash section too small"); 3398 return; 3399 } 3400 buf = d->d_buf; 3401 nbucket = buf[0]; 3402 symndx = buf[1]; 3403 maskwords = buf[2]; 3404 buf += 4; 3405 if (s->link >= re->shnum) 3406 return; 3407 ds = &re->sl[s->link]; 3408 if (!get_ent_count(ds, &dynsymcount)) 3409 return; 3410 if (symndx >= (uint32_t)dynsymcount) { 3411 warnx("Malformed .gnu.hash section (symndx out of range)"); 3412 return; 3413 } 3414 nchain = dynsymcount - symndx; 3415 if (d->d_size != 4 * sizeof(uint32_t) + maskwords * 3416 (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) + 3417 (nbucket + nchain) * sizeof(uint32_t)) { 3418 warnx("Malformed .gnu.hash section"); 3419 return; 3420 } 3421 bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2); 3422 chain = bucket + nbucket; 3423 3424 maxl = 0; 3425 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3426 errx(EXIT_FAILURE, "calloc failed"); 3427 for (i = 0; (uint32_t)i < nbucket; i++) 3428 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain; 3429 j++) { 3430 if (++bl[i] > maxl) 3431 maxl = bl[i]; 3432 if (chain[j - symndx] & 1) 3433 break; 3434 } 3435 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3436 errx(EXIT_FAILURE, "calloc failed"); 3437 for (i = 0; (uint32_t)i < nbucket; i++) 3438 c[bl[i]]++; 3439 printf("Histogram for bucket list length (total of %u buckets):\n", 3440 nbucket); 3441 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3442 total = 0; 3443 for (i = 0; (uint32_t)i <= maxl; i++) { 3444 total += c[i] * i; 3445 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3446 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3447 } 3448 free(c); 3449 free(bl); 3450 } 3451 3452 static void 3453 dump_hash(struct readelf *re) 3454 { 3455 struct section *s; 3456 int i; 3457 3458 for (i = 0; (size_t) i < re->shnum; i++) { 3459 s = &re->sl[i]; 3460 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) { 3461 if (s->type == SHT_GNU_HASH) 3462 dump_gnu_hash(re, s); 3463 else if (re->ehdr.e_machine == EM_ALPHA && 3464 s->entsize == 8) 3465 dump_svr4_hash64(re, s); 3466 else 3467 dump_svr4_hash(s); 3468 } 3469 } 3470 } 3471 3472 static void 3473 dump_notes(struct readelf *re) 3474 { 3475 struct section *s; 3476 const char *rawfile; 3477 GElf_Phdr phdr; 3478 Elf_Data *d; 3479 size_t filesize, phnum; 3480 int i, elferr; 3481 3482 if (re->ehdr.e_type == ET_CORE) { 3483 /* 3484 * Search program headers in the core file for 3485 * PT_NOTE entry. 3486 */ 3487 if (elf_getphnum(re->elf, &phnum) == 0) { 3488 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 3489 return; 3490 } 3491 if (phnum == 0) 3492 return; 3493 if ((rawfile = elf_rawfile(re->elf, &filesize)) == NULL) { 3494 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 3495 return; 3496 } 3497 for (i = 0; (size_t) i < phnum; i++) { 3498 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 3499 warnx("gelf_getphdr failed: %s", 3500 elf_errmsg(-1)); 3501 continue; 3502 } 3503 if (phdr.p_type == PT_NOTE) { 3504 if (phdr.p_offset >= filesize || 3505 phdr.p_filesz > filesize - phdr.p_offset) { 3506 warnx("invalid PHDR offset"); 3507 continue; 3508 } 3509 dump_notes_content(re, rawfile + phdr.p_offset, 3510 phdr.p_filesz, phdr.p_offset); 3511 } 3512 } 3513 3514 } else { 3515 /* 3516 * For objects other than core files, Search for 3517 * SHT_NOTE sections. 3518 */ 3519 for (i = 0; (size_t) i < re->shnum; i++) { 3520 s = &re->sl[i]; 3521 if (s->type == SHT_NOTE) { 3522 (void) elf_errno(); 3523 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3524 elferr = elf_errno(); 3525 if (elferr != 0) 3526 warnx("elf_getdata failed: %s", 3527 elf_errmsg(elferr)); 3528 continue; 3529 } 3530 dump_notes_content(re, d->d_buf, d->d_size, 3531 s->off); 3532 } 3533 } 3534 } 3535 } 3536 3537 static struct flag_desc note_feature_ctl_flags[] = { 3538 { NT_FREEBSD_FCTL_ASLR_DISABLE, "ASLR_DISABLE" }, 3539 { 0, NULL } 3540 }; 3541 3542 static void 3543 dump_notes_data(const char *name, uint32_t type, const char *buf, size_t sz) 3544 { 3545 size_t i; 3546 const uint32_t *ubuf; 3547 3548 /* Note data is at least 4-byte aligned. */ 3549 if (((uintptr_t)buf & 3) != 0) { 3550 warnx("bad note data alignment"); 3551 goto unknown; 3552 } 3553 ubuf = (const uint32_t *)(const void *)buf; 3554 3555 if (strcmp(name, "FreeBSD") == 0) { 3556 switch (type) { 3557 case NT_FREEBSD_ABI_TAG: 3558 if (sz != 4) 3559 goto unknown; 3560 printf(" ABI tag: %u\n", ubuf[0]); 3561 return; 3562 /* NT_FREEBSD_NOINIT_TAG carries no data, treat as unknown. */ 3563 case NT_FREEBSD_ARCH_TAG: 3564 if (sz != 4) 3565 goto unknown; 3566 printf(" Arch tag: %x\n", ubuf[0]); 3567 return; 3568 case NT_FREEBSD_FEATURE_CTL: 3569 if (sz != 4) 3570 goto unknown; 3571 printf(" Features:"); 3572 dump_flags(note_feature_ctl_flags, ubuf[0]); 3573 return; 3574 } 3575 } 3576 unknown: 3577 printf(" description data:"); 3578 for (i = 0; i < sz; i++) 3579 printf(" %02x", (unsigned char)buf[i]); 3580 printf("\n"); 3581 } 3582 3583 static void 3584 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off) 3585 { 3586 Elf_Note *note; 3587 const char *end, *name; 3588 3589 printf("\nNotes at offset %#010jx with length %#010jx:\n", 3590 (uintmax_t) off, (uintmax_t) sz); 3591 printf(" %-13s %-15s %s\n", "Owner", "Data size", "Description"); 3592 end = buf + sz; 3593 while (buf < end) { 3594 if (buf + sizeof(*note) > end) { 3595 warnx("invalid note header"); 3596 return; 3597 } 3598 note = (Elf_Note *)(uintptr_t) buf; 3599 buf += sizeof(Elf_Note); 3600 name = buf; 3601 buf += roundup2(note->n_namesz, 4); 3602 /* 3603 * The name field is required to be nul-terminated, and 3604 * n_namesz includes the terminating nul in observed 3605 * implementations (contrary to the ELF-64 spec). A special 3606 * case is needed for cores generated by some older Linux 3607 * versions, which write a note named "CORE" without a nul 3608 * terminator and n_namesz = 4. 3609 */ 3610 if (note->n_namesz == 0) 3611 name = ""; 3612 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0) 3613 name = "CORE"; 3614 else if (strnlen(name, note->n_namesz) >= note->n_namesz) 3615 name = "<invalid>"; 3616 printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz); 3617 printf(" %s\n", note_type(name, re->ehdr.e_type, 3618 note->n_type)); 3619 dump_notes_data(name, note->n_type, buf, note->n_descsz); 3620 buf += roundup2(note->n_descsz, 4); 3621 } 3622 } 3623 3624 /* 3625 * Symbol versioning sections are the same for 32bit and 64bit 3626 * ELF objects. 3627 */ 3628 #define Elf_Verdef Elf32_Verdef 3629 #define Elf_Verdaux Elf32_Verdaux 3630 #define Elf_Verneed Elf32_Verneed 3631 #define Elf_Vernaux Elf32_Vernaux 3632 3633 #define SAVE_VERSION_NAME(x, n, t) \ 3634 do { \ 3635 while (x >= re->ver_sz) { \ 3636 nv = realloc(re->ver, \ 3637 sizeof(*re->ver) * re->ver_sz * 2); \ 3638 if (nv == NULL) { \ 3639 warn("realloc failed"); \ 3640 free(re->ver); \ 3641 return; \ 3642 } \ 3643 re->ver = nv; \ 3644 for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \ 3645 re->ver[i].name = NULL; \ 3646 re->ver[i].type = 0; \ 3647 } \ 3648 re->ver_sz *= 2; \ 3649 } \ 3650 if (x > 1) { \ 3651 re->ver[x].name = n; \ 3652 re->ver[x].type = t; \ 3653 } \ 3654 } while (0) 3655 3656 3657 static void 3658 dump_verdef(struct readelf *re, int dump) 3659 { 3660 struct section *s; 3661 struct symver *nv; 3662 Elf_Data *d; 3663 Elf_Verdef *vd; 3664 Elf_Verdaux *vda; 3665 uint8_t *buf, *end, *buf2; 3666 const char *name; 3667 int elferr, i, j; 3668 3669 if ((s = re->vd_s) == NULL) 3670 return; 3671 if (s->link >= re->shnum) 3672 return; 3673 3674 if (re->ver == NULL) { 3675 re->ver_sz = 16; 3676 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3677 NULL) { 3678 warn("calloc failed"); 3679 return; 3680 } 3681 re->ver[0].name = "*local*"; 3682 re->ver[1].name = "*global*"; 3683 } 3684 3685 if (dump) 3686 printf("\nVersion definition section (%s):\n", s->name); 3687 (void) elf_errno(); 3688 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3689 elferr = elf_errno(); 3690 if (elferr != 0) 3691 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3692 return; 3693 } 3694 if (d->d_size == 0) 3695 return; 3696 3697 buf = d->d_buf; 3698 end = buf + d->d_size; 3699 while (buf + sizeof(Elf_Verdef) <= end) { 3700 vd = (Elf_Verdef *) (uintptr_t) buf; 3701 if (dump) { 3702 printf(" 0x%4.4lx", (unsigned long) 3703 (buf - (uint8_t *)d->d_buf)); 3704 printf(" vd_version: %u vd_flags: %d" 3705 " vd_ndx: %u vd_cnt: %u", vd->vd_version, 3706 vd->vd_flags, vd->vd_ndx, vd->vd_cnt); 3707 } 3708 buf2 = buf + vd->vd_aux; 3709 j = 0; 3710 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) { 3711 vda = (Elf_Verdaux *) (uintptr_t) buf2; 3712 name = get_string(re, s->link, vda->vda_name); 3713 if (j == 0) { 3714 if (dump) 3715 printf(" vda_name: %s\n", name); 3716 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1); 3717 } else if (dump) 3718 printf(" 0x%4.4lx parent: %s\n", 3719 (unsigned long) (buf2 - 3720 (uint8_t *)d->d_buf), name); 3721 if (vda->vda_next == 0) 3722 break; 3723 buf2 += vda->vda_next; 3724 j++; 3725 } 3726 if (vd->vd_next == 0) 3727 break; 3728 buf += vd->vd_next; 3729 } 3730 } 3731 3732 static void 3733 dump_verneed(struct readelf *re, int dump) 3734 { 3735 struct section *s; 3736 struct symver *nv; 3737 Elf_Data *d; 3738 Elf_Verneed *vn; 3739 Elf_Vernaux *vna; 3740 uint8_t *buf, *end, *buf2; 3741 const char *name; 3742 int elferr, i, j; 3743 3744 if ((s = re->vn_s) == NULL) 3745 return; 3746 if (s->link >= re->shnum) 3747 return; 3748 3749 if (re->ver == NULL) { 3750 re->ver_sz = 16; 3751 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3752 NULL) { 3753 warn("calloc failed"); 3754 return; 3755 } 3756 re->ver[0].name = "*local*"; 3757 re->ver[1].name = "*global*"; 3758 } 3759 3760 if (dump) 3761 printf("\nVersion needed section (%s):\n", s->name); 3762 (void) elf_errno(); 3763 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3764 elferr = elf_errno(); 3765 if (elferr != 0) 3766 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3767 return; 3768 } 3769 if (d->d_size == 0) 3770 return; 3771 3772 buf = d->d_buf; 3773 end = buf + d->d_size; 3774 while (buf + sizeof(Elf_Verneed) <= end) { 3775 vn = (Elf_Verneed *) (uintptr_t) buf; 3776 if (dump) { 3777 printf(" 0x%4.4lx", (unsigned long) 3778 (buf - (uint8_t *)d->d_buf)); 3779 printf(" vn_version: %u vn_file: %s vn_cnt: %u\n", 3780 vn->vn_version, 3781 get_string(re, s->link, vn->vn_file), 3782 vn->vn_cnt); 3783 } 3784 buf2 = buf + vn->vn_aux; 3785 j = 0; 3786 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) { 3787 vna = (Elf32_Vernaux *) (uintptr_t) buf2; 3788 if (dump) 3789 printf(" 0x%4.4lx", (unsigned long) 3790 (buf2 - (uint8_t *)d->d_buf)); 3791 name = get_string(re, s->link, vna->vna_name); 3792 if (dump) 3793 printf(" vna_name: %s vna_flags: %u" 3794 " vna_other: %u\n", name, 3795 vna->vna_flags, vna->vna_other); 3796 SAVE_VERSION_NAME((int)vna->vna_other, name, 0); 3797 if (vna->vna_next == 0) 3798 break; 3799 buf2 += vna->vna_next; 3800 j++; 3801 } 3802 if (vn->vn_next == 0) 3803 break; 3804 buf += vn->vn_next; 3805 } 3806 } 3807 3808 static void 3809 dump_versym(struct readelf *re) 3810 { 3811 int i; 3812 uint16_t vs; 3813 3814 if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL) 3815 return; 3816 printf("\nVersion symbol section (%s):\n", re->vs_s->name); 3817 for (i = 0; i < re->vs_sz; i++) { 3818 if ((i & 3) == 0) { 3819 if (i > 0) 3820 putchar('\n'); 3821 printf(" %03x:", i); 3822 } 3823 vs = re->vs[i] & VERSYM_VERSION; 3824 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3825 warnx("invalid versym version index %u", re->vs[i]); 3826 break; 3827 } 3828 if (re->vs[i] & VERSYM_HIDDEN) 3829 printf(" %3xh %-12s ", vs, 3830 re->ver[re->vs[i] & VERSYM_VERSION].name); 3831 else 3832 printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name); 3833 } 3834 putchar('\n'); 3835 } 3836 3837 static void 3838 dump_ver(struct readelf *re) 3839 { 3840 3841 if (re->vs_s && re->ver && re->vs) 3842 dump_versym(re); 3843 if (re->vd_s) 3844 dump_verdef(re, 1); 3845 if (re->vn_s) 3846 dump_verneed(re, 1); 3847 } 3848 3849 static void 3850 search_ver(struct readelf *re) 3851 { 3852 struct section *s; 3853 Elf_Data *d; 3854 int elferr, i; 3855 3856 for (i = 0; (size_t) i < re->shnum; i++) { 3857 s = &re->sl[i]; 3858 if (s->type == SHT_SUNW_versym) 3859 re->vs_s = s; 3860 if (s->type == SHT_SUNW_verneed) 3861 re->vn_s = s; 3862 if (s->type == SHT_SUNW_verdef) 3863 re->vd_s = s; 3864 } 3865 if (re->vd_s) 3866 dump_verdef(re, 0); 3867 if (re->vn_s) 3868 dump_verneed(re, 0); 3869 if (re->vs_s && re->ver != NULL) { 3870 (void) elf_errno(); 3871 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) { 3872 elferr = elf_errno(); 3873 if (elferr != 0) 3874 warnx("elf_getdata failed: %s", 3875 elf_errmsg(elferr)); 3876 return; 3877 } 3878 if (d->d_size == 0) 3879 return; 3880 re->vs = d->d_buf; 3881 re->vs_sz = d->d_size / sizeof(Elf32_Half); 3882 } 3883 } 3884 3885 #undef Elf_Verdef 3886 #undef Elf_Verdaux 3887 #undef Elf_Verneed 3888 #undef Elf_Vernaux 3889 #undef SAVE_VERSION_NAME 3890 3891 /* 3892 * Elf32_Lib and Elf64_Lib are identical. 3893 */ 3894 #define Elf_Lib Elf32_Lib 3895 3896 static void 3897 dump_liblist(struct readelf *re) 3898 { 3899 struct section *s; 3900 struct tm *t; 3901 time_t ti; 3902 char tbuf[20]; 3903 Elf_Data *d; 3904 Elf_Lib *lib; 3905 int i, j, k, elferr, first, len; 3906 3907 for (i = 0; (size_t) i < re->shnum; i++) { 3908 s = &re->sl[i]; 3909 if (s->type != SHT_GNU_LIBLIST) 3910 continue; 3911 if (s->link >= re->shnum) 3912 continue; 3913 (void) elf_errno(); 3914 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3915 elferr = elf_errno(); 3916 if (elferr != 0) 3917 warnx("elf_getdata failed: %s", 3918 elf_errmsg(elferr)); 3919 continue; 3920 } 3921 if (d->d_size <= 0) 3922 continue; 3923 lib = d->d_buf; 3924 if (!get_ent_count(s, &len)) 3925 continue; 3926 printf("\nLibrary list section '%s' ", s->name); 3927 printf("contains %d entries:\n", len); 3928 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp", 3929 "Checksum", "Version", "Flags"); 3930 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) { 3931 printf("%3d: ", j); 3932 printf("%-20.20s ", 3933 get_string(re, s->link, lib->l_name)); 3934 ti = lib->l_time_stamp; 3935 t = gmtime(&ti); 3936 snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d" 3937 ":%2d", t->tm_year + 1900, t->tm_mon + 1, 3938 t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec); 3939 printf("%-19.19s ", tbuf); 3940 printf("0x%08x ", lib->l_checksum); 3941 printf("%-7d %#x", lib->l_version, lib->l_flags); 3942 if (lib->l_flags != 0) { 3943 first = 1; 3944 putchar('('); 3945 for (k = 0; l_flag[k].name != NULL; k++) { 3946 if ((l_flag[k].value & lib->l_flags) == 3947 0) 3948 continue; 3949 if (!first) 3950 putchar(','); 3951 else 3952 first = 0; 3953 printf("%s", l_flag[k].name); 3954 } 3955 putchar(')'); 3956 } 3957 putchar('\n'); 3958 lib++; 3959 } 3960 } 3961 } 3962 3963 #undef Elf_Lib 3964 3965 static void 3966 dump_section_groups(struct readelf *re) 3967 { 3968 struct section *s; 3969 const char *symname; 3970 Elf_Data *d; 3971 uint32_t *w; 3972 int i, j, elferr; 3973 size_t n; 3974 3975 for (i = 0; (size_t) i < re->shnum; i++) { 3976 s = &re->sl[i]; 3977 if (s->type != SHT_GROUP) 3978 continue; 3979 if (s->link >= re->shnum) 3980 continue; 3981 (void) elf_errno(); 3982 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3983 elferr = elf_errno(); 3984 if (elferr != 0) 3985 warnx("elf_getdata failed: %s", 3986 elf_errmsg(elferr)); 3987 continue; 3988 } 3989 if (d->d_size <= 0) 3990 continue; 3991 3992 w = d->d_buf; 3993 3994 /* We only support COMDAT section. */ 3995 #ifndef GRP_COMDAT 3996 #define GRP_COMDAT 0x1 3997 #endif 3998 if ((*w++ & GRP_COMDAT) == 0) 3999 return; 4000 4001 if (s->entsize == 0) 4002 s->entsize = 4; 4003 4004 symname = get_symbol_name(re, s->link, s->info); 4005 n = s->sz / s->entsize; 4006 if (n-- < 1) 4007 return; 4008 4009 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju" 4010 " sections:\n", i, s->name, symname, (uintmax_t)n); 4011 printf(" %-10.10s %s\n", "[Index]", "Name"); 4012 for (j = 0; (size_t) j < n; j++, w++) { 4013 if (*w >= re->shnum) { 4014 warnx("invalid section index: %u", *w); 4015 continue; 4016 } 4017 printf(" [%5u] %s\n", *w, re->sl[*w].name); 4018 } 4019 } 4020 } 4021 4022 static uint8_t * 4023 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe) 4024 { 4025 uint64_t val; 4026 4027 /* 4028 * According to ARM EABI: For tags > 32, even numbered tags have 4029 * a ULEB128 param and odd numbered ones have NUL-terminated 4030 * string param. This rule probably also applies for tags <= 32 4031 * if the object arch is not ARM. 4032 */ 4033 4034 printf(" Tag_unknown_%ju: ", (uintmax_t) tag); 4035 4036 if (tag & 1) { 4037 printf("%s\n", (char *) p); 4038 p += strlen((char *) p) + 1; 4039 } else { 4040 val = _decode_uleb128(&p, pe); 4041 printf("%ju\n", (uintmax_t) val); 4042 } 4043 4044 return (p); 4045 } 4046 4047 static uint8_t * 4048 dump_compatibility_tag(uint8_t *p, uint8_t *pe) 4049 { 4050 uint64_t val; 4051 4052 val = _decode_uleb128(&p, pe); 4053 printf("flag = %ju, vendor = %s\n", (uintmax_t) val, p); 4054 p += strlen((char *) p) + 1; 4055 4056 return (p); 4057 } 4058 4059 static void 4060 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4061 { 4062 uint64_t tag, val; 4063 size_t i; 4064 int found, desc; 4065 4066 (void) re; 4067 4068 while (p < pe) { 4069 tag = _decode_uleb128(&p, pe); 4070 found = desc = 0; 4071 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]); 4072 i++) { 4073 if (tag == aeabi_tags[i].tag) { 4074 found = 1; 4075 printf(" %s: ", aeabi_tags[i].s_tag); 4076 if (aeabi_tags[i].get_desc) { 4077 desc = 1; 4078 val = _decode_uleb128(&p, pe); 4079 printf("%s\n", 4080 aeabi_tags[i].get_desc(val)); 4081 } 4082 break; 4083 } 4084 if (tag < aeabi_tags[i].tag) 4085 break; 4086 } 4087 if (!found) { 4088 p = dump_unknown_tag(tag, p, pe); 4089 continue; 4090 } 4091 if (desc) 4092 continue; 4093 4094 switch (tag) { 4095 case 4: /* Tag_CPU_raw_name */ 4096 case 5: /* Tag_CPU_name */ 4097 case 67: /* Tag_conformance */ 4098 printf("%s\n", (char *) p); 4099 p += strlen((char *) p) + 1; 4100 break; 4101 case 32: /* Tag_compatibility */ 4102 p = dump_compatibility_tag(p, pe); 4103 break; 4104 case 64: /* Tag_nodefaults */ 4105 /* ignored, written as 0. */ 4106 (void) _decode_uleb128(&p, pe); 4107 printf("True\n"); 4108 break; 4109 case 65: /* Tag_also_compatible_with */ 4110 val = _decode_uleb128(&p, pe); 4111 /* Must be Tag_CPU_arch */ 4112 if (val != 6) { 4113 printf("unknown\n"); 4114 break; 4115 } 4116 val = _decode_uleb128(&p, pe); 4117 printf("%s\n", aeabi_cpu_arch(val)); 4118 /* Skip NUL terminator. */ 4119 p++; 4120 break; 4121 default: 4122 putchar('\n'); 4123 break; 4124 } 4125 } 4126 } 4127 4128 #ifndef Tag_GNU_MIPS_ABI_FP 4129 #define Tag_GNU_MIPS_ABI_FP 4 4130 #endif 4131 4132 static void 4133 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4134 { 4135 uint64_t tag, val; 4136 4137 (void) re; 4138 4139 while (p < pe) { 4140 tag = _decode_uleb128(&p, pe); 4141 switch (tag) { 4142 case Tag_GNU_MIPS_ABI_FP: 4143 val = _decode_uleb128(&p, pe); 4144 printf(" Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val)); 4145 break; 4146 case 32: /* Tag_compatibility */ 4147 p = dump_compatibility_tag(p, pe); 4148 break; 4149 default: 4150 p = dump_unknown_tag(tag, p, pe); 4151 break; 4152 } 4153 } 4154 } 4155 4156 #ifndef Tag_GNU_Power_ABI_FP 4157 #define Tag_GNU_Power_ABI_FP 4 4158 #endif 4159 4160 #ifndef Tag_GNU_Power_ABI_Vector 4161 #define Tag_GNU_Power_ABI_Vector 8 4162 #endif 4163 4164 static void 4165 dump_ppc_attributes(uint8_t *p, uint8_t *pe) 4166 { 4167 uint64_t tag, val; 4168 4169 while (p < pe) { 4170 tag = _decode_uleb128(&p, pe); 4171 switch (tag) { 4172 case Tag_GNU_Power_ABI_FP: 4173 val = _decode_uleb128(&p, pe); 4174 printf(" Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val)); 4175 break; 4176 case Tag_GNU_Power_ABI_Vector: 4177 val = _decode_uleb128(&p, pe); 4178 printf(" Tag_GNU_Power_ABI_Vector: %s\n", 4179 ppc_abi_vector(val)); 4180 break; 4181 case 32: /* Tag_compatibility */ 4182 p = dump_compatibility_tag(p, pe); 4183 break; 4184 default: 4185 p = dump_unknown_tag(tag, p, pe); 4186 break; 4187 } 4188 } 4189 } 4190 4191 static void 4192 dump_attributes(struct readelf *re) 4193 { 4194 struct section *s; 4195 Elf_Data *d; 4196 uint8_t *p, *pe, *sp; 4197 size_t len, seclen, nlen, sublen; 4198 uint64_t val; 4199 int tag, i, elferr; 4200 4201 for (i = 0; (size_t) i < re->shnum; i++) { 4202 s = &re->sl[i]; 4203 if (s->type != SHT_GNU_ATTRIBUTES && 4204 (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3)) 4205 continue; 4206 (void) elf_errno(); 4207 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4208 elferr = elf_errno(); 4209 if (elferr != 0) 4210 warnx("elf_rawdata failed: %s", 4211 elf_errmsg(elferr)); 4212 continue; 4213 } 4214 if (d->d_size <= 0) 4215 continue; 4216 p = d->d_buf; 4217 pe = p + d->d_size; 4218 if (*p != 'A') { 4219 printf("Unknown Attribute Section Format: %c\n", 4220 (char) *p); 4221 continue; 4222 } 4223 len = d->d_size - 1; 4224 p++; 4225 while (len > 0) { 4226 if (len < 4) { 4227 warnx("truncated attribute section length"); 4228 return; 4229 } 4230 seclen = re->dw_decode(&p, 4); 4231 if (seclen > len) { 4232 warnx("invalid attribute section length"); 4233 return; 4234 } 4235 len -= seclen; 4236 nlen = strlen((char *) p) + 1; 4237 if (nlen + 4 > seclen) { 4238 warnx("invalid attribute section name"); 4239 return; 4240 } 4241 printf("Attribute Section: %s\n", (char *) p); 4242 p += nlen; 4243 seclen -= nlen + 4; 4244 while (seclen > 0) { 4245 sp = p; 4246 tag = *p++; 4247 sublen = re->dw_decode(&p, 4); 4248 if (sublen > seclen) { 4249 warnx("invalid attribute sub-section" 4250 " length"); 4251 return; 4252 } 4253 seclen -= sublen; 4254 printf("%s", top_tag(tag)); 4255 if (tag == 2 || tag == 3) { 4256 putchar(':'); 4257 for (;;) { 4258 val = _decode_uleb128(&p, pe); 4259 if (val == 0) 4260 break; 4261 printf(" %ju", (uintmax_t) val); 4262 } 4263 } 4264 putchar('\n'); 4265 if (re->ehdr.e_machine == EM_ARM && 4266 s->type == SHT_LOPROC + 3) 4267 dump_arm_attributes(re, p, sp + sublen); 4268 else if (re->ehdr.e_machine == EM_MIPS || 4269 re->ehdr.e_machine == EM_MIPS_RS3_LE) 4270 dump_mips_attributes(re, p, 4271 sp + sublen); 4272 else if (re->ehdr.e_machine == EM_PPC) 4273 dump_ppc_attributes(p, sp + sublen); 4274 p = sp + sublen; 4275 } 4276 } 4277 } 4278 } 4279 4280 static void 4281 dump_mips_specific_info(struct readelf *re) 4282 { 4283 struct section *s; 4284 int i; 4285 4286 s = NULL; 4287 for (i = 0; (size_t) i < re->shnum; i++) { 4288 s = &re->sl[i]; 4289 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") || 4290 (s->type == SHT_MIPS_OPTIONS))) { 4291 dump_mips_options(re, s); 4292 } 4293 } 4294 4295 if (s->name != NULL && (!strcmp(s->name, ".MIPS.abiflags") || 4296 (s->type == SHT_MIPS_ABIFLAGS))) 4297 dump_mips_abiflags(re, s); 4298 4299 /* 4300 * Dump .reginfo if present (although it will be ignored by an OS if a 4301 * .MIPS.options section is present, according to SGI mips64 spec). 4302 */ 4303 for (i = 0; (size_t) i < re->shnum; i++) { 4304 s = &re->sl[i]; 4305 if (s->name != NULL && (!strcmp(s->name, ".reginfo") || 4306 (s->type == SHT_MIPS_REGINFO))) 4307 dump_mips_reginfo(re, s); 4308 } 4309 } 4310 4311 static void 4312 dump_mips_abiflags(struct readelf *re, struct section *s) 4313 { 4314 Elf_Data *d; 4315 uint8_t *p; 4316 int elferr; 4317 uint32_t isa_ext, ases, flags1, flags2; 4318 uint16_t version; 4319 uint8_t isa_level, isa_rev, gpr_size, cpr1_size, cpr2_size, fp_abi; 4320 4321 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4322 elferr = elf_errno(); 4323 if (elferr != 0) 4324 warnx("elf_rawdata failed: %s", 4325 elf_errmsg(elferr)); 4326 return; 4327 } 4328 if (d->d_size != 24) { 4329 warnx("invalid MIPS abiflags section size"); 4330 return; 4331 } 4332 4333 p = d->d_buf; 4334 version = re->dw_decode(&p, 2); 4335 printf("MIPS ABI Flags Version: %u", version); 4336 if (version != 0) { 4337 printf(" (unknown)\n\n"); 4338 return; 4339 } 4340 printf("\n\n"); 4341 4342 isa_level = re->dw_decode(&p, 1); 4343 isa_rev = re->dw_decode(&p, 1); 4344 gpr_size = re->dw_decode(&p, 1); 4345 cpr1_size = re->dw_decode(&p, 1); 4346 cpr2_size = re->dw_decode(&p, 1); 4347 fp_abi = re->dw_decode(&p, 1); 4348 isa_ext = re->dw_decode(&p, 4); 4349 ases = re->dw_decode(&p, 4); 4350 flags1 = re->dw_decode(&p, 4); 4351 flags2 = re->dw_decode(&p, 4); 4352 4353 printf("ISA: "); 4354 if (isa_rev <= 1) 4355 printf("MIPS%u\n", isa_level); 4356 else 4357 printf("MIPS%ur%u\n", isa_level, isa_rev); 4358 printf("GPR size: %d\n", get_mips_register_size(gpr_size)); 4359 printf("CPR1 size: %d\n", get_mips_register_size(cpr1_size)); 4360 printf("CPR2 size: %d\n", get_mips_register_size(cpr2_size)); 4361 printf("FP ABI: "); 4362 switch (fp_abi) { 4363 case 3: 4364 printf("Soft float"); 4365 break; 4366 default: 4367 printf("%u", fp_abi); 4368 break; 4369 } 4370 printf("\nISA Extension: %u\n", isa_ext); 4371 printf("ASEs: %u\n", ases); 4372 printf("FLAGS 1: %08x\n", flags1); 4373 printf("FLAGS 2: %08x\n", flags2); 4374 } 4375 4376 static int 4377 get_mips_register_size(uint8_t flag) 4378 { 4379 switch (flag) { 4380 case 0: return 0; 4381 case 1: return 32; 4382 case 2: return 64; 4383 case 3: return 128; 4384 default: return -1; 4385 } 4386 } 4387 static void 4388 dump_mips_reginfo(struct readelf *re, struct section *s) 4389 { 4390 Elf_Data *d; 4391 int elferr, len; 4392 4393 (void) elf_errno(); 4394 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4395 elferr = elf_errno(); 4396 if (elferr != 0) 4397 warnx("elf_rawdata failed: %s", 4398 elf_errmsg(elferr)); 4399 return; 4400 } 4401 if (d->d_size <= 0) 4402 return; 4403 if (!get_ent_count(s, &len)) 4404 return; 4405 4406 printf("\nSection '%s' contains %d entries:\n", s->name, len); 4407 dump_mips_odk_reginfo(re, d->d_buf, d->d_size); 4408 } 4409 4410 static void 4411 dump_mips_options(struct readelf *re, struct section *s) 4412 { 4413 Elf_Data *d; 4414 uint32_t info; 4415 uint16_t sndx; 4416 uint8_t *p, *pe; 4417 uint8_t kind, size; 4418 int elferr; 4419 4420 (void) elf_errno(); 4421 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4422 elferr = elf_errno(); 4423 if (elferr != 0) 4424 warnx("elf_rawdata failed: %s", 4425 elf_errmsg(elferr)); 4426 return; 4427 } 4428 if (d->d_size == 0) 4429 return; 4430 4431 printf("\nSection %s contains:\n", s->name); 4432 p = d->d_buf; 4433 pe = p + d->d_size; 4434 while (p < pe) { 4435 if (pe - p < 8) { 4436 warnx("Truncated MIPS option header"); 4437 return; 4438 } 4439 kind = re->dw_decode(&p, 1); 4440 size = re->dw_decode(&p, 1); 4441 sndx = re->dw_decode(&p, 2); 4442 info = re->dw_decode(&p, 4); 4443 if (size < 8 || size - 8 > pe - p) { 4444 warnx("Malformed MIPS option header"); 4445 return; 4446 } 4447 size -= 8; 4448 switch (kind) { 4449 case ODK_REGINFO: 4450 dump_mips_odk_reginfo(re, p, size); 4451 break; 4452 case ODK_EXCEPTIONS: 4453 printf(" EXCEPTIONS FPU_MIN: %#x\n", 4454 info & OEX_FPU_MIN); 4455 printf("%11.11s FPU_MAX: %#x\n", "", 4456 info & OEX_FPU_MAX); 4457 dump_mips_option_flags("", mips_exceptions_option, 4458 info); 4459 break; 4460 case ODK_PAD: 4461 printf(" %-10.10s section: %ju\n", "OPAD", 4462 (uintmax_t) sndx); 4463 dump_mips_option_flags("", mips_pad_option, info); 4464 break; 4465 case ODK_HWPATCH: 4466 dump_mips_option_flags("HWPATCH", mips_hwpatch_option, 4467 info); 4468 break; 4469 case ODK_HWAND: 4470 dump_mips_option_flags("HWAND", mips_hwa_option, info); 4471 break; 4472 case ODK_HWOR: 4473 dump_mips_option_flags("HWOR", mips_hwo_option, info); 4474 break; 4475 case ODK_FILL: 4476 printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info); 4477 break; 4478 case ODK_TAGS: 4479 printf(" %-10.10s\n", "TAGS"); 4480 break; 4481 case ODK_GP_GROUP: 4482 printf(" %-10.10s GP group number: %#x\n", "GP_GROUP", 4483 info & 0xFFFF); 4484 if (info & 0x10000) 4485 printf(" %-10.10s GP group is " 4486 "self-contained\n", ""); 4487 break; 4488 case ODK_IDENT: 4489 printf(" %-10.10s default GP group number: %#x\n", 4490 "IDENT", info & 0xFFFF); 4491 if (info & 0x10000) 4492 printf(" %-10.10s default GP group is " 4493 "self-contained\n", ""); 4494 break; 4495 case ODK_PAGESIZE: 4496 printf(" %-10.10s\n", "PAGESIZE"); 4497 break; 4498 default: 4499 break; 4500 } 4501 p += size; 4502 } 4503 } 4504 4505 static void 4506 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info) 4507 { 4508 int first; 4509 4510 first = 1; 4511 for (; opt->desc != NULL; opt++) { 4512 if (info & opt->flag) { 4513 printf(" %-10.10s %s\n", first ? name : "", 4514 opt->desc); 4515 first = 0; 4516 } 4517 } 4518 } 4519 4520 static void 4521 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz) 4522 { 4523 uint32_t ri_gprmask; 4524 uint32_t ri_cprmask[4]; 4525 uint64_t ri_gp_value; 4526 uint8_t *pe; 4527 int i; 4528 4529 pe = p + sz; 4530 while (p < pe) { 4531 ri_gprmask = re->dw_decode(&p, 4); 4532 /* Skip ri_pad padding field for mips64. */ 4533 if (re->ec == ELFCLASS64) 4534 re->dw_decode(&p, 4); 4535 for (i = 0; i < 4; i++) 4536 ri_cprmask[i] = re->dw_decode(&p, 4); 4537 if (re->ec == ELFCLASS32) 4538 ri_gp_value = re->dw_decode(&p, 4); 4539 else 4540 ri_gp_value = re->dw_decode(&p, 8); 4541 printf(" %s ", option_kind(ODK_REGINFO)); 4542 printf("ri_gprmask: 0x%08jx\n", (uintmax_t) ri_gprmask); 4543 for (i = 0; i < 4; i++) 4544 printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i, 4545 (uintmax_t) ri_cprmask[i]); 4546 printf("%12.12s", ""); 4547 printf("ri_gp_value: %#jx\n", (uintmax_t) ri_gp_value); 4548 } 4549 } 4550 4551 static void 4552 dump_arch_specific_info(struct readelf *re) 4553 { 4554 4555 dump_liblist(re); 4556 dump_attributes(re); 4557 4558 switch (re->ehdr.e_machine) { 4559 case EM_MIPS: 4560 case EM_MIPS_RS3_LE: 4561 dump_mips_specific_info(re); 4562 default: 4563 break; 4564 } 4565 } 4566 4567 static const char * 4568 dwarf_regname(struct readelf *re, unsigned int num) 4569 { 4570 static char rx[32]; 4571 const char *rn; 4572 4573 if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL) 4574 return (rn); 4575 4576 snprintf(rx, sizeof(rx), "r%u", num); 4577 4578 return (rx); 4579 } 4580 4581 static void 4582 dump_dwarf_line(struct readelf *re) 4583 { 4584 struct section *s; 4585 Dwarf_Die die; 4586 Dwarf_Error de; 4587 Dwarf_Half tag, version, pointer_size; 4588 Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize; 4589 Dwarf_Small minlen, defstmt, lrange, opbase, oplen; 4590 Elf_Data *d; 4591 char *pn; 4592 uint64_t address, file, line, column, isa, opsize, udelta; 4593 int64_t sdelta; 4594 uint8_t *p, *pe; 4595 int8_t lbase; 4596 int i, is_stmt, dwarf_size, elferr, ret; 4597 4598 printf("\nDump of debug contents of section .debug_line:\n"); 4599 4600 s = NULL; 4601 for (i = 0; (size_t) i < re->shnum; i++) { 4602 s = &re->sl[i]; 4603 if (s->name != NULL && !strcmp(s->name, ".debug_line")) 4604 break; 4605 } 4606 if ((size_t) i >= re->shnum) 4607 return; 4608 4609 (void) elf_errno(); 4610 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4611 elferr = elf_errno(); 4612 if (elferr != 0) 4613 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 4614 return; 4615 } 4616 if (d->d_size <= 0) 4617 return; 4618 4619 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4620 NULL, &de)) == DW_DLV_OK) { 4621 die = NULL; 4622 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) { 4623 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4624 warnx("dwarf_tag failed: %s", 4625 dwarf_errmsg(de)); 4626 return; 4627 } 4628 /* XXX: What about DW_TAG_partial_unit? */ 4629 if (tag == DW_TAG_compile_unit) 4630 break; 4631 } 4632 if (die == NULL) { 4633 warnx("could not find DW_TAG_compile_unit die"); 4634 return; 4635 } 4636 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset, 4637 &de) != DW_DLV_OK) 4638 continue; 4639 4640 length = re->dw_read(d, &offset, 4); 4641 if (length == 0xffffffff) { 4642 dwarf_size = 8; 4643 length = re->dw_read(d, &offset, 8); 4644 } else 4645 dwarf_size = 4; 4646 4647 if (length > d->d_size - offset) { 4648 warnx("invalid .dwarf_line section"); 4649 continue; 4650 } 4651 4652 endoff = offset + length; 4653 pe = (uint8_t *) d->d_buf + endoff; 4654 version = re->dw_read(d, &offset, 2); 4655 hdrlen = re->dw_read(d, &offset, dwarf_size); 4656 minlen = re->dw_read(d, &offset, 1); 4657 defstmt = re->dw_read(d, &offset, 1); 4658 lbase = re->dw_read(d, &offset, 1); 4659 lrange = re->dw_read(d, &offset, 1); 4660 opbase = re->dw_read(d, &offset, 1); 4661 4662 printf("\n"); 4663 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 4664 printf(" DWARF version:\t\t%u\n", version); 4665 printf(" Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen); 4666 printf(" Minimum Instruction Length:\t%u\n", minlen); 4667 printf(" Initial value of 'is_stmt':\t%u\n", defstmt); 4668 printf(" Line Base:\t\t\t%d\n", lbase); 4669 printf(" Line Range:\t\t\t%u\n", lrange); 4670 printf(" Opcode Base:\t\t\t%u\n", opbase); 4671 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de); 4672 printf(" (Pointer size:\t\t%u)\n", pointer_size); 4673 4674 printf("\n"); 4675 printf(" Opcodes:\n"); 4676 for (i = 1; i < opbase; i++) { 4677 oplen = re->dw_read(d, &offset, 1); 4678 printf(" Opcode %d has %u args\n", i, oplen); 4679 } 4680 4681 printf("\n"); 4682 printf(" The Directory Table:\n"); 4683 p = (uint8_t *) d->d_buf + offset; 4684 while (*p != '\0') { 4685 printf(" %s\n", (char *) p); 4686 p += strlen((char *) p) + 1; 4687 } 4688 4689 p++; 4690 printf("\n"); 4691 printf(" The File Name Table:\n"); 4692 printf(" Entry\tDir\tTime\tSize\tName\n"); 4693 i = 0; 4694 while (*p != '\0') { 4695 i++; 4696 pn = (char *) p; 4697 p += strlen(pn) + 1; 4698 dirndx = _decode_uleb128(&p, pe); 4699 mtime = _decode_uleb128(&p, pe); 4700 fsize = _decode_uleb128(&p, pe); 4701 printf(" %d\t%ju\t%ju\t%ju\t%s\n", i, 4702 (uintmax_t) dirndx, (uintmax_t) mtime, 4703 (uintmax_t) fsize, pn); 4704 } 4705 4706 #define RESET_REGISTERS \ 4707 do { \ 4708 address = 0; \ 4709 file = 1; \ 4710 line = 1; \ 4711 column = 0; \ 4712 is_stmt = defstmt; \ 4713 } while(0) 4714 4715 #define LINE(x) (lbase + (((x) - opbase) % lrange)) 4716 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen) 4717 4718 p++; 4719 printf("\n"); 4720 printf(" Line Number Statements:\n"); 4721 4722 RESET_REGISTERS; 4723 4724 while (p < pe) { 4725 4726 if (*p == 0) { 4727 /* 4728 * Extended Opcodes. 4729 */ 4730 p++; 4731 opsize = _decode_uleb128(&p, pe); 4732 printf(" Extended opcode %u: ", *p); 4733 switch (*p) { 4734 case DW_LNE_end_sequence: 4735 p++; 4736 RESET_REGISTERS; 4737 printf("End of Sequence\n"); 4738 break; 4739 case DW_LNE_set_address: 4740 p++; 4741 address = re->dw_decode(&p, 4742 pointer_size); 4743 printf("set Address to %#jx\n", 4744 (uintmax_t) address); 4745 break; 4746 case DW_LNE_define_file: 4747 p++; 4748 pn = (char *) p; 4749 p += strlen(pn) + 1; 4750 dirndx = _decode_uleb128(&p, pe); 4751 mtime = _decode_uleb128(&p, pe); 4752 fsize = _decode_uleb128(&p, pe); 4753 printf("define new file: %s\n", pn); 4754 break; 4755 default: 4756 /* Unrecognized extened opcodes. */ 4757 p += opsize; 4758 printf("unknown opcode\n"); 4759 } 4760 } else if (*p > 0 && *p < opbase) { 4761 /* 4762 * Standard Opcodes. 4763 */ 4764 switch(*p++) { 4765 case DW_LNS_copy: 4766 printf(" Copy\n"); 4767 break; 4768 case DW_LNS_advance_pc: 4769 udelta = _decode_uleb128(&p, pe) * 4770 minlen; 4771 address += udelta; 4772 printf(" Advance PC by %ju to %#jx\n", 4773 (uintmax_t) udelta, 4774 (uintmax_t) address); 4775 break; 4776 case DW_LNS_advance_line: 4777 sdelta = _decode_sleb128(&p, pe); 4778 line += sdelta; 4779 printf(" Advance Line by %jd to %ju\n", 4780 (intmax_t) sdelta, 4781 (uintmax_t) line); 4782 break; 4783 case DW_LNS_set_file: 4784 file = _decode_uleb128(&p, pe); 4785 printf(" Set File to %ju\n", 4786 (uintmax_t) file); 4787 break; 4788 case DW_LNS_set_column: 4789 column = _decode_uleb128(&p, pe); 4790 printf(" Set Column to %ju\n", 4791 (uintmax_t) column); 4792 break; 4793 case DW_LNS_negate_stmt: 4794 is_stmt = !is_stmt; 4795 printf(" Set is_stmt to %d\n", is_stmt); 4796 break; 4797 case DW_LNS_set_basic_block: 4798 printf(" Set basic block flag\n"); 4799 break; 4800 case DW_LNS_const_add_pc: 4801 address += ADDRESS(255); 4802 printf(" Advance PC by constant %ju" 4803 " to %#jx\n", 4804 (uintmax_t) ADDRESS(255), 4805 (uintmax_t) address); 4806 break; 4807 case DW_LNS_fixed_advance_pc: 4808 udelta = re->dw_decode(&p, 2); 4809 address += udelta; 4810 printf(" Advance PC by fixed value " 4811 "%ju to %#jx\n", 4812 (uintmax_t) udelta, 4813 (uintmax_t) address); 4814 break; 4815 case DW_LNS_set_prologue_end: 4816 printf(" Set prologue end flag\n"); 4817 break; 4818 case DW_LNS_set_epilogue_begin: 4819 printf(" Set epilogue begin flag\n"); 4820 break; 4821 case DW_LNS_set_isa: 4822 isa = _decode_uleb128(&p, pe); 4823 printf(" Set isa to %ju\n", 4824 (uintmax_t) isa); 4825 break; 4826 default: 4827 /* Unrecognized extended opcodes. */ 4828 printf(" Unknown extended opcode %u\n", 4829 *(p - 1)); 4830 break; 4831 } 4832 4833 } else { 4834 /* 4835 * Special Opcodes. 4836 */ 4837 line += LINE(*p); 4838 address += ADDRESS(*p); 4839 printf(" Special opcode %u: advance Address " 4840 "by %ju to %#jx and Line by %jd to %ju\n", 4841 *p - opbase, (uintmax_t) ADDRESS(*p), 4842 (uintmax_t) address, (intmax_t) LINE(*p), 4843 (uintmax_t) line); 4844 p++; 4845 } 4846 4847 4848 } 4849 } 4850 if (ret == DW_DLV_ERROR) 4851 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 4852 4853 #undef RESET_REGISTERS 4854 #undef LINE 4855 #undef ADDRESS 4856 } 4857 4858 static void 4859 dump_dwarf_line_decoded(struct readelf *re) 4860 { 4861 Dwarf_Die die; 4862 Dwarf_Line *linebuf, ln; 4863 Dwarf_Addr lineaddr; 4864 Dwarf_Signed linecount, srccount; 4865 Dwarf_Unsigned lineno, fn; 4866 Dwarf_Error de; 4867 const char *dir, *file; 4868 char **srcfiles; 4869 int i, ret; 4870 4871 printf("Decoded dump of debug contents of section .debug_line:\n\n"); 4872 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4873 NULL, &de)) == DW_DLV_OK) { 4874 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK) 4875 continue; 4876 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) != 4877 DW_DLV_OK) 4878 file = NULL; 4879 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) != 4880 DW_DLV_OK) 4881 dir = NULL; 4882 printf("CU: "); 4883 if (dir && file && file[0] != '/') 4884 printf("%s/", dir); 4885 if (file) 4886 printf("%s", file); 4887 putchar('\n'); 4888 printf("%-37s %11s %s\n", "Filename", "Line Number", 4889 "Starting Address"); 4890 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK) 4891 continue; 4892 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK) 4893 continue; 4894 for (i = 0; i < linecount; i++) { 4895 ln = linebuf[i]; 4896 if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK) 4897 continue; 4898 if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK) 4899 continue; 4900 if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK) 4901 continue; 4902 printf("%-37s %11ju %#18jx\n", 4903 basename(srcfiles[fn - 1]), (uintmax_t) lineno, 4904 (uintmax_t) lineaddr); 4905 } 4906 putchar('\n'); 4907 } 4908 } 4909 4910 static void 4911 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level) 4912 { 4913 Dwarf_Attribute *attr_list; 4914 Dwarf_Die ret_die; 4915 Dwarf_Off dieoff, cuoff, culen, attroff; 4916 Dwarf_Unsigned ate, lang, v_udata, v_sig; 4917 Dwarf_Signed attr_count, v_sdata; 4918 Dwarf_Off v_off; 4919 Dwarf_Addr v_addr; 4920 Dwarf_Half tag, attr, form; 4921 Dwarf_Block *v_block; 4922 Dwarf_Bool v_bool, is_info; 4923 Dwarf_Sig8 v_sig8; 4924 Dwarf_Error de; 4925 Dwarf_Ptr v_expr; 4926 const char *tag_str, *attr_str, *ate_str, *lang_str; 4927 char unk_tag[32], unk_attr[32]; 4928 char *v_str; 4929 uint8_t *b, *p; 4930 int i, j, abc, ret; 4931 4932 if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) { 4933 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de)); 4934 goto cont_search; 4935 } 4936 4937 printf(" <%d><%jx>: ", level, (uintmax_t) dieoff); 4938 4939 if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) { 4940 warnx("dwarf_die_CU_offset_range failed: %s", 4941 dwarf_errmsg(de)); 4942 cuoff = 0; 4943 } 4944 4945 abc = dwarf_die_abbrev_code(die); 4946 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4947 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 4948 goto cont_search; 4949 } 4950 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 4951 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag); 4952 tag_str = unk_tag; 4953 } 4954 4955 printf("Abbrev Number: %d (%s)\n", abc, tag_str); 4956 4957 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 4958 DW_DLV_OK) { 4959 if (ret == DW_DLV_ERROR) 4960 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 4961 goto cont_search; 4962 } 4963 4964 for (i = 0; i < attr_count; i++) { 4965 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 4966 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 4967 continue; 4968 } 4969 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 4970 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 4971 continue; 4972 } 4973 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) { 4974 snprintf(unk_attr, sizeof(unk_attr), 4975 "[Unknown AT: %#x]", attr); 4976 attr_str = unk_attr; 4977 } 4978 if (dwarf_attroffset(attr_list[i], &attroff, &de) != 4979 DW_DLV_OK) { 4980 warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de)); 4981 attroff = 0; 4982 } 4983 printf(" <%jx> %-18s: ", (uintmax_t) attroff, attr_str); 4984 switch (form) { 4985 case DW_FORM_ref_addr: 4986 case DW_FORM_sec_offset: 4987 if (dwarf_global_formref(attr_list[i], &v_off, &de) != 4988 DW_DLV_OK) { 4989 warnx("dwarf_global_formref failed: %s", 4990 dwarf_errmsg(de)); 4991 continue; 4992 } 4993 if (form == DW_FORM_ref_addr) 4994 printf("<0x%jx>", (uintmax_t) v_off); 4995 else 4996 printf("0x%jx", (uintmax_t) v_off); 4997 break; 4998 4999 case DW_FORM_ref1: 5000 case DW_FORM_ref2: 5001 case DW_FORM_ref4: 5002 case DW_FORM_ref8: 5003 case DW_FORM_ref_udata: 5004 if (dwarf_formref(attr_list[i], &v_off, &de) != 5005 DW_DLV_OK) { 5006 warnx("dwarf_formref failed: %s", 5007 dwarf_errmsg(de)); 5008 continue; 5009 } 5010 v_off += cuoff; 5011 printf("<0x%jx>", (uintmax_t) v_off); 5012 break; 5013 5014 case DW_FORM_addr: 5015 if (dwarf_formaddr(attr_list[i], &v_addr, &de) != 5016 DW_DLV_OK) { 5017 warnx("dwarf_formaddr failed: %s", 5018 dwarf_errmsg(de)); 5019 continue; 5020 } 5021 printf("%#jx", (uintmax_t) v_addr); 5022 break; 5023 5024 case DW_FORM_data1: 5025 case DW_FORM_data2: 5026 case DW_FORM_data4: 5027 case DW_FORM_data8: 5028 case DW_FORM_udata: 5029 if (dwarf_formudata(attr_list[i], &v_udata, &de) != 5030 DW_DLV_OK) { 5031 warnx("dwarf_formudata failed: %s", 5032 dwarf_errmsg(de)); 5033 continue; 5034 } 5035 if (attr == DW_AT_high_pc) 5036 printf("0x%jx", (uintmax_t) v_udata); 5037 else 5038 printf("%ju", (uintmax_t) v_udata); 5039 break; 5040 5041 case DW_FORM_sdata: 5042 if (dwarf_formsdata(attr_list[i], &v_sdata, &de) != 5043 DW_DLV_OK) { 5044 warnx("dwarf_formudata failed: %s", 5045 dwarf_errmsg(de)); 5046 continue; 5047 } 5048 printf("%jd", (intmax_t) v_sdata); 5049 break; 5050 5051 case DW_FORM_flag: 5052 if (dwarf_formflag(attr_list[i], &v_bool, &de) != 5053 DW_DLV_OK) { 5054 warnx("dwarf_formflag failed: %s", 5055 dwarf_errmsg(de)); 5056 continue; 5057 } 5058 printf("%jd", (intmax_t) v_bool); 5059 break; 5060 5061 case DW_FORM_flag_present: 5062 putchar('1'); 5063 break; 5064 5065 case DW_FORM_string: 5066 case DW_FORM_strp: 5067 if (dwarf_formstring(attr_list[i], &v_str, &de) != 5068 DW_DLV_OK) { 5069 warnx("dwarf_formstring failed: %s", 5070 dwarf_errmsg(de)); 5071 continue; 5072 } 5073 if (form == DW_FORM_string) 5074 printf("%s", v_str); 5075 else 5076 printf("(indirect string) %s", v_str); 5077 break; 5078 5079 case DW_FORM_block: 5080 case DW_FORM_block1: 5081 case DW_FORM_block2: 5082 case DW_FORM_block4: 5083 if (dwarf_formblock(attr_list[i], &v_block, &de) != 5084 DW_DLV_OK) { 5085 warnx("dwarf_formblock failed: %s", 5086 dwarf_errmsg(de)); 5087 continue; 5088 } 5089 printf("%ju byte block:", (uintmax_t) v_block->bl_len); 5090 b = v_block->bl_data; 5091 for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++) 5092 printf(" %x", b[j]); 5093 printf("\t("); 5094 dump_dwarf_block(re, v_block->bl_data, v_block->bl_len); 5095 putchar(')'); 5096 break; 5097 5098 case DW_FORM_exprloc: 5099 if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr, 5100 &de) != DW_DLV_OK) { 5101 warnx("dwarf_formexprloc failed: %s", 5102 dwarf_errmsg(de)); 5103 continue; 5104 } 5105 printf("%ju byte block:", (uintmax_t) v_udata); 5106 b = v_expr; 5107 for (j = 0; (Dwarf_Unsigned) j < v_udata; j++) 5108 printf(" %x", b[j]); 5109 printf("\t("); 5110 dump_dwarf_block(re, v_expr, v_udata); 5111 putchar(')'); 5112 break; 5113 5114 case DW_FORM_ref_sig8: 5115 if (dwarf_formsig8(attr_list[i], &v_sig8, &de) != 5116 DW_DLV_OK) { 5117 warnx("dwarf_formsig8 failed: %s", 5118 dwarf_errmsg(de)); 5119 continue; 5120 } 5121 p = (uint8_t *)(uintptr_t) &v_sig8.signature[0]; 5122 v_sig = re->dw_decode(&p, 8); 5123 printf("signature: 0x%jx", (uintmax_t) v_sig); 5124 } 5125 switch (attr) { 5126 case DW_AT_encoding: 5127 if (dwarf_attrval_unsigned(die, attr, &ate, &de) != 5128 DW_DLV_OK) 5129 break; 5130 if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK) 5131 ate_str = "DW_ATE_UNKNOWN"; 5132 printf("\t(%s)", &ate_str[strlen("DW_ATE_")]); 5133 break; 5134 5135 case DW_AT_language: 5136 if (dwarf_attrval_unsigned(die, attr, &lang, &de) != 5137 DW_DLV_OK) 5138 break; 5139 if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK) 5140 break; 5141 printf("\t(%s)", &lang_str[strlen("DW_LANG_")]); 5142 break; 5143 5144 case DW_AT_location: 5145 case DW_AT_string_length: 5146 case DW_AT_return_addr: 5147 case DW_AT_data_member_location: 5148 case DW_AT_frame_base: 5149 case DW_AT_segment: 5150 case DW_AT_static_link: 5151 case DW_AT_use_location: 5152 case DW_AT_vtable_elem_location: 5153 switch (form) { 5154 case DW_FORM_data4: 5155 case DW_FORM_data8: 5156 case DW_FORM_sec_offset: 5157 printf("\t(location list)"); 5158 break; 5159 default: 5160 break; 5161 } 5162 5163 default: 5164 break; 5165 } 5166 putchar('\n'); 5167 } 5168 5169 5170 cont_search: 5171 /* Search children. */ 5172 ret = dwarf_child(die, &ret_die, &de); 5173 if (ret == DW_DLV_ERROR) 5174 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5175 else if (ret == DW_DLV_OK) 5176 dump_dwarf_die(re, ret_die, level + 1); 5177 5178 /* Search sibling. */ 5179 is_info = dwarf_get_die_infotypes_flag(die); 5180 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 5181 if (ret == DW_DLV_ERROR) 5182 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5183 else if (ret == DW_DLV_OK) 5184 dump_dwarf_die(re, ret_die, level); 5185 5186 dwarf_dealloc(re->dbg, die, DW_DLA_DIE); 5187 } 5188 5189 static void 5190 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize, 5191 Dwarf_Half ver) 5192 { 5193 5194 re->cu_psize = psize; 5195 re->cu_osize = osize; 5196 re->cu_ver = ver; 5197 } 5198 5199 static void 5200 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info) 5201 { 5202 struct section *s; 5203 Dwarf_Die die; 5204 Dwarf_Error de; 5205 Dwarf_Half tag, version, pointer_size, off_size; 5206 Dwarf_Off cu_offset, cu_length; 5207 Dwarf_Off aboff; 5208 Dwarf_Unsigned typeoff; 5209 Dwarf_Sig8 sig8; 5210 Dwarf_Unsigned sig; 5211 uint8_t *p; 5212 const char *sn; 5213 int i, ret; 5214 5215 sn = is_info ? ".debug_info" : ".debug_types"; 5216 5217 s = NULL; 5218 for (i = 0; (size_t) i < re->shnum; i++) { 5219 s = &re->sl[i]; 5220 if (s->name != NULL && !strcmp(s->name, sn)) 5221 break; 5222 } 5223 if ((size_t) i >= re->shnum) 5224 return; 5225 5226 do { 5227 printf("\nDump of debug contents of section %s:\n", sn); 5228 5229 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL, 5230 &version, &aboff, &pointer_size, &off_size, NULL, &sig8, 5231 &typeoff, NULL, &de)) == DW_DLV_OK) { 5232 set_cu_context(re, pointer_size, off_size, version); 5233 die = NULL; 5234 while (dwarf_siblingof_b(re->dbg, die, &die, is_info, 5235 &de) == DW_DLV_OK) { 5236 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5237 warnx("dwarf_tag failed: %s", 5238 dwarf_errmsg(de)); 5239 continue; 5240 } 5241 /* XXX: What about DW_TAG_partial_unit? */ 5242 if ((is_info && tag == DW_TAG_compile_unit) || 5243 (!is_info && tag == DW_TAG_type_unit)) 5244 break; 5245 } 5246 if (die == NULL && is_info) { 5247 warnx("could not find DW_TAG_compile_unit " 5248 "die"); 5249 continue; 5250 } else if (die == NULL && !is_info) { 5251 warnx("could not find DW_TAG_type_unit die"); 5252 continue; 5253 } 5254 5255 if (dwarf_die_CU_offset_range(die, &cu_offset, 5256 &cu_length, &de) != DW_DLV_OK) { 5257 warnx("dwarf_die_CU_offset failed: %s", 5258 dwarf_errmsg(de)); 5259 continue; 5260 } 5261 5262 cu_length -= off_size == 4 ? 4 : 12; 5263 5264 sig = 0; 5265 if (!is_info) { 5266 p = (uint8_t *)(uintptr_t) &sig8.signature[0]; 5267 sig = re->dw_decode(&p, 8); 5268 } 5269 5270 printf("\n Type Unit @ offset 0x%jx:\n", 5271 (uintmax_t) cu_offset); 5272 printf(" Length:\t\t%#jx (%d-bit)\n", 5273 (uintmax_t) cu_length, off_size == 4 ? 32 : 64); 5274 printf(" Version:\t\t%u\n", version); 5275 printf(" Abbrev Offset:\t0x%jx\n", 5276 (uintmax_t) aboff); 5277 printf(" Pointer Size:\t%u\n", pointer_size); 5278 if (!is_info) { 5279 printf(" Signature:\t\t0x%016jx\n", 5280 (uintmax_t) sig); 5281 printf(" Type Offset:\t0x%jx\n", 5282 (uintmax_t) typeoff); 5283 } 5284 5285 dump_dwarf_die(re, die, 0); 5286 } 5287 if (ret == DW_DLV_ERROR) 5288 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5289 if (is_info) 5290 break; 5291 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 5292 } 5293 5294 static void 5295 dump_dwarf_abbrev(struct readelf *re) 5296 { 5297 Dwarf_Abbrev ab; 5298 Dwarf_Off aboff, atoff; 5299 Dwarf_Unsigned length, attr_count; 5300 Dwarf_Signed flag, form; 5301 Dwarf_Half tag, attr; 5302 Dwarf_Error de; 5303 const char *tag_str, *attr_str, *form_str; 5304 char unk_tag[32], unk_attr[32], unk_form[32]; 5305 int i, j, ret; 5306 5307 printf("\nContents of section .debug_abbrev:\n\n"); 5308 5309 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff, 5310 NULL, NULL, &de)) == DW_DLV_OK) { 5311 printf(" Number TAG\n"); 5312 i = 0; 5313 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length, 5314 &attr_count, &de)) == DW_DLV_OK) { 5315 if (length == 1) { 5316 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5317 break; 5318 } 5319 aboff += length; 5320 printf("%4d", ++i); 5321 if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) { 5322 warnx("dwarf_get_abbrev_tag failed: %s", 5323 dwarf_errmsg(de)); 5324 goto next_abbrev; 5325 } 5326 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 5327 snprintf(unk_tag, sizeof(unk_tag), 5328 "[Unknown Tag: %#x]", tag); 5329 tag_str = unk_tag; 5330 } 5331 if (dwarf_get_abbrev_children_flag(ab, &flag, &de) != 5332 DW_DLV_OK) { 5333 warnx("dwarf_get_abbrev_children_flag failed:" 5334 " %s", dwarf_errmsg(de)); 5335 goto next_abbrev; 5336 } 5337 printf(" %s %s\n", tag_str, 5338 flag ? "[has children]" : "[no children]"); 5339 for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) { 5340 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j, 5341 &attr, &form, &atoff, &de) != DW_DLV_OK) { 5342 warnx("dwarf_get_abbrev_entry failed:" 5343 " %s", dwarf_errmsg(de)); 5344 continue; 5345 } 5346 if (dwarf_get_AT_name(attr, &attr_str) != 5347 DW_DLV_OK) { 5348 snprintf(unk_attr, sizeof(unk_attr), 5349 "[Unknown AT: %#x]", attr); 5350 attr_str = unk_attr; 5351 } 5352 if (dwarf_get_FORM_name(form, &form_str) != 5353 DW_DLV_OK) { 5354 snprintf(unk_form, sizeof(unk_form), 5355 "[Unknown Form: %#x]", 5356 (Dwarf_Half) form); 5357 form_str = unk_form; 5358 } 5359 printf(" %-18s %s\n", attr_str, form_str); 5360 } 5361 next_abbrev: 5362 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5363 } 5364 if (ret != DW_DLV_OK) 5365 warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de)); 5366 } 5367 if (ret == DW_DLV_ERROR) 5368 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5369 } 5370 5371 static void 5372 dump_dwarf_pubnames(struct readelf *re) 5373 { 5374 struct section *s; 5375 Dwarf_Off die_off; 5376 Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length; 5377 Dwarf_Signed cnt; 5378 Dwarf_Global *globs; 5379 Dwarf_Half nt_version; 5380 Dwarf_Error de; 5381 Elf_Data *d; 5382 char *glob_name; 5383 int i, dwarf_size, elferr; 5384 5385 printf("\nContents of the .debug_pubnames section:\n"); 5386 5387 s = NULL; 5388 for (i = 0; (size_t) i < re->shnum; i++) { 5389 s = &re->sl[i]; 5390 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames")) 5391 break; 5392 } 5393 if ((size_t) i >= re->shnum) 5394 return; 5395 5396 (void) elf_errno(); 5397 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5398 elferr = elf_errno(); 5399 if (elferr != 0) 5400 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5401 return; 5402 } 5403 if (d->d_size <= 0) 5404 return; 5405 5406 /* Read in .debug_pubnames section table header. */ 5407 offset = 0; 5408 length = re->dw_read(d, &offset, 4); 5409 if (length == 0xffffffff) { 5410 dwarf_size = 8; 5411 length = re->dw_read(d, &offset, 8); 5412 } else 5413 dwarf_size = 4; 5414 5415 if (length > d->d_size - offset) { 5416 warnx("invalid .dwarf_pubnames section"); 5417 return; 5418 } 5419 5420 nt_version = re->dw_read(d, &offset, 2); 5421 nt_cu_offset = re->dw_read(d, &offset, dwarf_size); 5422 nt_cu_length = re->dw_read(d, &offset, dwarf_size); 5423 printf(" Length:\t\t\t\t%ju\n", (uintmax_t) length); 5424 printf(" Version:\t\t\t\t%u\n", nt_version); 5425 printf(" Offset into .debug_info section:\t%ju\n", 5426 (uintmax_t) nt_cu_offset); 5427 printf(" Size of area in .debug_info section:\t%ju\n", 5428 (uintmax_t) nt_cu_length); 5429 5430 if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) { 5431 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de)); 5432 return; 5433 } 5434 5435 printf("\n Offset Name\n"); 5436 for (i = 0; i < cnt; i++) { 5437 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) { 5438 warnx("dwarf_globname failed: %s", dwarf_errmsg(de)); 5439 continue; 5440 } 5441 if (dwarf_global_die_offset(globs[i], &die_off, &de) != 5442 DW_DLV_OK) { 5443 warnx("dwarf_global_die_offset failed: %s", 5444 dwarf_errmsg(de)); 5445 continue; 5446 } 5447 printf(" %-11ju %s\n", (uintmax_t) die_off, glob_name); 5448 } 5449 } 5450 5451 static void 5452 dump_dwarf_aranges(struct readelf *re) 5453 { 5454 struct section *s; 5455 Dwarf_Arange *aranges; 5456 Dwarf_Addr start; 5457 Dwarf_Unsigned offset, length, as_cu_offset; 5458 Dwarf_Off die_off; 5459 Dwarf_Signed cnt; 5460 Dwarf_Half as_version, as_addrsz, as_segsz; 5461 Dwarf_Error de; 5462 Elf_Data *d; 5463 int i, dwarf_size, elferr; 5464 5465 printf("\nContents of section .debug_aranges:\n"); 5466 5467 s = NULL; 5468 for (i = 0; (size_t) i < re->shnum; i++) { 5469 s = &re->sl[i]; 5470 if (s->name != NULL && !strcmp(s->name, ".debug_aranges")) 5471 break; 5472 } 5473 if ((size_t) i >= re->shnum) 5474 return; 5475 5476 (void) elf_errno(); 5477 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5478 elferr = elf_errno(); 5479 if (elferr != 0) 5480 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5481 return; 5482 } 5483 if (d->d_size <= 0) 5484 return; 5485 5486 /* Read in the .debug_aranges section table header. */ 5487 offset = 0; 5488 length = re->dw_read(d, &offset, 4); 5489 if (length == 0xffffffff) { 5490 dwarf_size = 8; 5491 length = re->dw_read(d, &offset, 8); 5492 } else 5493 dwarf_size = 4; 5494 5495 if (length > d->d_size - offset) { 5496 warnx("invalid .dwarf_aranges section"); 5497 return; 5498 } 5499 5500 as_version = re->dw_read(d, &offset, 2); 5501 as_cu_offset = re->dw_read(d, &offset, dwarf_size); 5502 as_addrsz = re->dw_read(d, &offset, 1); 5503 as_segsz = re->dw_read(d, &offset, 1); 5504 5505 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 5506 printf(" Version:\t\t\t%u\n", as_version); 5507 printf(" Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset); 5508 printf(" Pointer Size:\t\t\t%u\n", as_addrsz); 5509 printf(" Segment Size:\t\t\t%u\n", as_segsz); 5510 5511 if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) { 5512 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de)); 5513 return; 5514 } 5515 5516 printf("\n Address Length\n"); 5517 for (i = 0; i < cnt; i++) { 5518 if (dwarf_get_arange_info(aranges[i], &start, &length, 5519 &die_off, &de) != DW_DLV_OK) { 5520 warnx("dwarf_get_arange_info failed: %s", 5521 dwarf_errmsg(de)); 5522 continue; 5523 } 5524 printf(" %08jx %ju\n", (uintmax_t) start, 5525 (uintmax_t) length); 5526 } 5527 } 5528 5529 static void 5530 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) 5531 { 5532 Dwarf_Attribute *attr_list; 5533 Dwarf_Ranges *ranges; 5534 Dwarf_Die ret_die; 5535 Dwarf_Error de; 5536 Dwarf_Addr base0; 5537 Dwarf_Half attr; 5538 Dwarf_Signed attr_count, cnt; 5539 Dwarf_Unsigned off, bytecnt; 5540 int i, j, ret; 5541 5542 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5543 DW_DLV_OK) { 5544 if (ret == DW_DLV_ERROR) 5545 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5546 goto cont_search; 5547 } 5548 5549 for (i = 0; i < attr_count; i++) { 5550 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5551 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5552 continue; 5553 } 5554 if (attr != DW_AT_ranges) 5555 continue; 5556 if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) { 5557 warnx("dwarf_formudata failed: %s", dwarf_errmsg(de)); 5558 continue; 5559 } 5560 if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt, 5561 &bytecnt, &de) != DW_DLV_OK) 5562 continue; 5563 base0 = base; 5564 for (j = 0; j < cnt; j++) { 5565 printf(" %08jx ", (uintmax_t) off); 5566 if (ranges[j].dwr_type == DW_RANGES_END) { 5567 printf("%s\n", "<End of list>"); 5568 continue; 5569 } else if (ranges[j].dwr_type == 5570 DW_RANGES_ADDRESS_SELECTION) { 5571 base0 = ranges[j].dwr_addr2; 5572 continue; 5573 } 5574 if (re->ec == ELFCLASS32) 5575 printf("%08jx %08jx\n", 5576 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5577 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5578 else 5579 printf("%016jx %016jx\n", 5580 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5581 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5582 } 5583 } 5584 5585 cont_search: 5586 /* Search children. */ 5587 ret = dwarf_child(die, &ret_die, &de); 5588 if (ret == DW_DLV_ERROR) 5589 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5590 else if (ret == DW_DLV_OK) 5591 dump_dwarf_ranges_foreach(re, ret_die, base); 5592 5593 /* Search sibling. */ 5594 ret = dwarf_siblingof(re->dbg, die, &ret_die, &de); 5595 if (ret == DW_DLV_ERROR) 5596 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5597 else if (ret == DW_DLV_OK) 5598 dump_dwarf_ranges_foreach(re, ret_die, base); 5599 } 5600 5601 static void 5602 dump_dwarf_ranges(struct readelf *re) 5603 { 5604 Dwarf_Ranges *ranges; 5605 Dwarf_Die die; 5606 Dwarf_Signed cnt; 5607 Dwarf_Unsigned bytecnt; 5608 Dwarf_Half tag; 5609 Dwarf_Error de; 5610 Dwarf_Unsigned lowpc; 5611 int ret; 5612 5613 if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) != 5614 DW_DLV_OK) 5615 return; 5616 5617 printf("Contents of the .debug_ranges section:\n\n"); 5618 if (re->ec == ELFCLASS32) 5619 printf(" %-8s %-8s %s\n", "Offset", "Begin", "End"); 5620 else 5621 printf(" %-8s %-16s %s\n", "Offset", "Begin", "End"); 5622 5623 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5624 NULL, &de)) == DW_DLV_OK) { 5625 die = NULL; 5626 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 5627 continue; 5628 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5629 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5630 continue; 5631 } 5632 /* XXX: What about DW_TAG_partial_unit? */ 5633 lowpc = 0; 5634 if (tag == DW_TAG_compile_unit) { 5635 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc, 5636 &de) != DW_DLV_OK) 5637 lowpc = 0; 5638 } 5639 5640 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc); 5641 } 5642 putchar('\n'); 5643 } 5644 5645 static void 5646 dump_dwarf_macinfo(struct readelf *re) 5647 { 5648 Dwarf_Unsigned offset; 5649 Dwarf_Signed cnt; 5650 Dwarf_Macro_Details *md; 5651 Dwarf_Error de; 5652 const char *mi_str; 5653 char unk_mi[32]; 5654 int i; 5655 5656 #define _MAX_MACINFO_ENTRY 65535 5657 5658 printf("\nContents of section .debug_macinfo:\n\n"); 5659 5660 offset = 0; 5661 while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY, 5662 &cnt, &md, &de) == DW_DLV_OK) { 5663 for (i = 0; i < cnt; i++) { 5664 offset = md[i].dmd_offset + 1; 5665 if (md[i].dmd_type == 0) 5666 break; 5667 if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) != 5668 DW_DLV_OK) { 5669 snprintf(unk_mi, sizeof(unk_mi), 5670 "[Unknown MACINFO: %#x]", md[i].dmd_type); 5671 mi_str = unk_mi; 5672 } 5673 printf(" %s", mi_str); 5674 switch (md[i].dmd_type) { 5675 case DW_MACINFO_define: 5676 case DW_MACINFO_undef: 5677 printf(" - lineno : %jd macro : %s\n", 5678 (intmax_t) md[i].dmd_lineno, 5679 md[i].dmd_macro); 5680 break; 5681 case DW_MACINFO_start_file: 5682 printf(" - lineno : %jd filenum : %jd\n", 5683 (intmax_t) md[i].dmd_lineno, 5684 (intmax_t) md[i].dmd_fileindex); 5685 break; 5686 default: 5687 putchar('\n'); 5688 break; 5689 } 5690 } 5691 } 5692 5693 #undef _MAX_MACINFO_ENTRY 5694 } 5695 5696 static void 5697 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts, 5698 Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc, 5699 Dwarf_Debug dbg) 5700 { 5701 Dwarf_Frame_Op *oplist; 5702 Dwarf_Signed opcnt, delta; 5703 Dwarf_Small op; 5704 Dwarf_Error de; 5705 const char *op_str; 5706 char unk_op[32]; 5707 int i; 5708 5709 if (dwarf_expand_frame_instructions(cie, insts, len, &oplist, 5710 &opcnt, &de) != DW_DLV_OK) { 5711 warnx("dwarf_expand_frame_instructions failed: %s", 5712 dwarf_errmsg(de)); 5713 return; 5714 } 5715 5716 for (i = 0; i < opcnt; i++) { 5717 if (oplist[i].fp_base_op != 0) 5718 op = oplist[i].fp_base_op << 6; 5719 else 5720 op = oplist[i].fp_extended_op; 5721 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) { 5722 snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]", 5723 op); 5724 op_str = unk_op; 5725 } 5726 printf(" %s", op_str); 5727 switch (op) { 5728 case DW_CFA_advance_loc: 5729 delta = oplist[i].fp_offset * caf; 5730 pc += delta; 5731 printf(": %ju to %08jx", (uintmax_t) delta, 5732 (uintmax_t) pc); 5733 break; 5734 case DW_CFA_offset: 5735 case DW_CFA_offset_extended: 5736 case DW_CFA_offset_extended_sf: 5737 delta = oplist[i].fp_offset * daf; 5738 printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register, 5739 dwarf_regname(re, oplist[i].fp_register), 5740 (intmax_t) delta); 5741 break; 5742 case DW_CFA_restore: 5743 printf(": r%u (%s)", oplist[i].fp_register, 5744 dwarf_regname(re, oplist[i].fp_register)); 5745 break; 5746 case DW_CFA_set_loc: 5747 pc = oplist[i].fp_offset; 5748 printf(": to %08jx", (uintmax_t) pc); 5749 break; 5750 case DW_CFA_advance_loc1: 5751 case DW_CFA_advance_loc2: 5752 case DW_CFA_advance_loc4: 5753 pc += oplist[i].fp_offset; 5754 printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset, 5755 (uintmax_t) pc); 5756 break; 5757 case DW_CFA_def_cfa: 5758 printf(": r%u (%s) ofs %ju", oplist[i].fp_register, 5759 dwarf_regname(re, oplist[i].fp_register), 5760 (uintmax_t) oplist[i].fp_offset); 5761 break; 5762 case DW_CFA_def_cfa_sf: 5763 printf(": r%u (%s) ofs %jd", oplist[i].fp_register, 5764 dwarf_regname(re, oplist[i].fp_register), 5765 (intmax_t) (oplist[i].fp_offset * daf)); 5766 break; 5767 case DW_CFA_def_cfa_register: 5768 printf(": r%u (%s)", oplist[i].fp_register, 5769 dwarf_regname(re, oplist[i].fp_register)); 5770 break; 5771 case DW_CFA_def_cfa_offset: 5772 printf(": %ju", (uintmax_t) oplist[i].fp_offset); 5773 break; 5774 case DW_CFA_def_cfa_offset_sf: 5775 printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf)); 5776 break; 5777 default: 5778 break; 5779 } 5780 putchar('\n'); 5781 } 5782 5783 dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK); 5784 } 5785 5786 static char * 5787 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off) 5788 { 5789 static char rs[16]; 5790 5791 if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE) 5792 snprintf(rs, sizeof(rs), "%c", 'u'); 5793 else if (reg == DW_FRAME_CFA_COL) 5794 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off); 5795 else 5796 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg), 5797 (intmax_t) off); 5798 5799 return (rs); 5800 } 5801 5802 static int 5803 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc, 5804 Dwarf_Unsigned func_len, Dwarf_Half cie_ra) 5805 { 5806 Dwarf_Regtable rt; 5807 Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc; 5808 Dwarf_Error de; 5809 char *vec; 5810 int i; 5811 5812 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7)) 5813 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7))) 5814 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7))) 5815 #define RT(x) rt.rules[(x)] 5816 5817 vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1); 5818 if (vec == NULL) 5819 err(EXIT_FAILURE, "calloc failed"); 5820 5821 pre_pc = ~((Dwarf_Addr) 0); 5822 cur_pc = pc; 5823 end_pc = pc + func_len; 5824 for (; cur_pc < end_pc; cur_pc++) { 5825 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5826 &de) != DW_DLV_OK) { 5827 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5828 dwarf_errmsg(de)); 5829 return (-1); 5830 } 5831 if (row_pc == pre_pc) 5832 continue; 5833 pre_pc = row_pc; 5834 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5835 if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE) 5836 BIT_SET(vec, i); 5837 } 5838 } 5839 5840 printf(" LOC CFA "); 5841 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5842 if (BIT_ISSET(vec, i)) { 5843 if ((Dwarf_Half) i == cie_ra) 5844 printf("ra "); 5845 else 5846 printf("%-5s", 5847 dwarf_regname(re, (unsigned int) i)); 5848 } 5849 } 5850 putchar('\n'); 5851 5852 pre_pc = ~((Dwarf_Addr) 0); 5853 cur_pc = pc; 5854 end_pc = pc + func_len; 5855 for (; cur_pc < end_pc; cur_pc++) { 5856 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5857 &de) != DW_DLV_OK) { 5858 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5859 dwarf_errmsg(de)); 5860 return (-1); 5861 } 5862 if (row_pc == pre_pc) 5863 continue; 5864 pre_pc = row_pc; 5865 printf("%08jx ", (uintmax_t) row_pc); 5866 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum, 5867 RT(0).dw_offset)); 5868 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5869 if (BIT_ISSET(vec, i)) { 5870 printf("%-5s", get_regoff_str(re, 5871 RT(i).dw_regnum, RT(i).dw_offset)); 5872 } 5873 } 5874 putchar('\n'); 5875 } 5876 5877 free(vec); 5878 5879 return (0); 5880 5881 #undef BIT_SET 5882 #undef BIT_CLR 5883 #undef BIT_ISSET 5884 #undef RT 5885 } 5886 5887 static void 5888 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) 5889 { 5890 Dwarf_Cie *cie_list, cie, pre_cie; 5891 Dwarf_Fde *fde_list, fde; 5892 Dwarf_Off cie_offset, fde_offset; 5893 Dwarf_Unsigned cie_length, fde_instlen; 5894 Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length; 5895 Dwarf_Signed cie_count, fde_count, cie_index; 5896 Dwarf_Addr low_pc; 5897 Dwarf_Half cie_ra; 5898 Dwarf_Small cie_version; 5899 Dwarf_Ptr fde_addr, fde_inst, cie_inst; 5900 char *cie_aug, c; 5901 int i, eh_frame; 5902 Dwarf_Error de; 5903 5904 printf("\nThe section %s contains:\n\n", s->name); 5905 5906 if (!strcmp(s->name, ".debug_frame")) { 5907 eh_frame = 0; 5908 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count, 5909 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5910 warnx("dwarf_get_fde_list failed: %s", 5911 dwarf_errmsg(de)); 5912 return; 5913 } 5914 } else if (!strcmp(s->name, ".eh_frame")) { 5915 eh_frame = 1; 5916 if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, 5917 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5918 warnx("dwarf_get_fde_list_eh failed: %s", 5919 dwarf_errmsg(de)); 5920 return; 5921 } 5922 } else 5923 return; 5924 5925 pre_cie = NULL; 5926 for (i = 0; i < fde_count; i++) { 5927 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) { 5928 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5929 continue; 5930 } 5931 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) { 5932 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5933 continue; 5934 } 5935 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr, 5936 &fde_length, &cie_offset, &cie_index, &fde_offset, 5937 &de) != DW_DLV_OK) { 5938 warnx("dwarf_get_fde_range failed: %s", 5939 dwarf_errmsg(de)); 5940 continue; 5941 } 5942 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen, 5943 &de) != DW_DLV_OK) { 5944 warnx("dwarf_get_fde_instr_bytes failed: %s", 5945 dwarf_errmsg(de)); 5946 continue; 5947 } 5948 if (pre_cie == NULL || cie != pre_cie) { 5949 pre_cie = cie; 5950 if (dwarf_get_cie_info(cie, &cie_length, &cie_version, 5951 &cie_aug, &cie_caf, &cie_daf, &cie_ra, 5952 &cie_inst, &cie_instlen, &de) != DW_DLV_OK) { 5953 warnx("dwarf_get_cie_info failed: %s", 5954 dwarf_errmsg(de)); 5955 continue; 5956 } 5957 printf("%08jx %08jx %8.8jx CIE", 5958 (uintmax_t) cie_offset, 5959 (uintmax_t) cie_length, 5960 (uintmax_t) (eh_frame ? 0 : ~0U)); 5961 if (!alt) { 5962 putchar('\n'); 5963 printf(" Version:\t\t\t%u\n", cie_version); 5964 printf(" Augmentation:\t\t\t\""); 5965 while ((c = *cie_aug++) != '\0') 5966 putchar(c); 5967 printf("\"\n"); 5968 printf(" Code alignment factor:\t%ju\n", 5969 (uintmax_t) cie_caf); 5970 printf(" Data alignment factor:\t%jd\n", 5971 (intmax_t) cie_daf); 5972 printf(" Return address column:\t%ju\n", 5973 (uintmax_t) cie_ra); 5974 putchar('\n'); 5975 dump_dwarf_frame_inst(re, cie, cie_inst, 5976 cie_instlen, cie_caf, cie_daf, 0, 5977 re->dbg); 5978 putchar('\n'); 5979 } else { 5980 printf(" \""); 5981 while ((c = *cie_aug++) != '\0') 5982 putchar(c); 5983 putchar('"'); 5984 printf(" cf=%ju df=%jd ra=%ju\n", 5985 (uintmax_t) cie_caf, 5986 (uintmax_t) cie_daf, 5987 (uintmax_t) cie_ra); 5988 dump_dwarf_frame_regtable(re, fde, low_pc, 1, 5989 cie_ra); 5990 putchar('\n'); 5991 } 5992 } 5993 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n", 5994 (uintmax_t) fde_offset, (uintmax_t) fde_length, 5995 (uintmax_t) cie_offset, 5996 (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset : 5997 cie_offset), 5998 (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len)); 5999 if (!alt) 6000 dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen, 6001 cie_caf, cie_daf, low_pc, re->dbg); 6002 else 6003 dump_dwarf_frame_regtable(re, fde, low_pc, func_len, 6004 cie_ra); 6005 putchar('\n'); 6006 } 6007 } 6008 6009 static void 6010 dump_dwarf_frame(struct readelf *re, int alt) 6011 { 6012 struct section *s; 6013 int i; 6014 6015 (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL); 6016 6017 for (i = 0; (size_t) i < re->shnum; i++) { 6018 s = &re->sl[i]; 6019 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") || 6020 !strcmp(s->name, ".eh_frame"))) 6021 dump_dwarf_frame_section(re, s, alt); 6022 } 6023 } 6024 6025 static void 6026 dump_dwarf_str(struct readelf *re) 6027 { 6028 struct section *s; 6029 Elf_Data *d; 6030 unsigned char *p; 6031 int elferr, end, i, j; 6032 6033 printf("\nContents of section .debug_str:\n"); 6034 6035 s = NULL; 6036 for (i = 0; (size_t) i < re->shnum; i++) { 6037 s = &re->sl[i]; 6038 if (s->name != NULL && !strcmp(s->name, ".debug_str")) 6039 break; 6040 } 6041 if ((size_t) i >= re->shnum) 6042 return; 6043 6044 (void) elf_errno(); 6045 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 6046 elferr = elf_errno(); 6047 if (elferr != 0) 6048 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 6049 return; 6050 } 6051 if (d->d_size <= 0) 6052 return; 6053 6054 for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) { 6055 printf(" 0x%08x", (unsigned int) i); 6056 if ((size_t) i + 16 > d->d_size) 6057 end = d->d_size; 6058 else 6059 end = i + 16; 6060 for (j = i; j < i + 16; j++) { 6061 if ((j - i) % 4 == 0) 6062 putchar(' '); 6063 if (j >= end) { 6064 printf(" "); 6065 continue; 6066 } 6067 printf("%02x", (uint8_t) p[j]); 6068 } 6069 putchar(' '); 6070 for (j = i; j < end; j++) { 6071 if (isprint(p[j])) 6072 putchar(p[j]); 6073 else if (p[j] == 0) 6074 putchar('.'); 6075 else 6076 putchar(' '); 6077 } 6078 putchar('\n'); 6079 } 6080 } 6081 6082 static int 6083 loc_at_comparator(const void *la1, const void *la2) 6084 { 6085 const struct loc_at *left, *right; 6086 6087 left = (const struct loc_at *)la1; 6088 right = (const struct loc_at *)la2; 6089 6090 if (left->la_off > right->la_off) 6091 return (1); 6092 else if (left->la_off < right->la_off) 6093 return (-1); 6094 else 6095 return (0); 6096 } 6097 6098 static void 6099 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc, 6100 struct loc_at **la_list, size_t *la_list_len, size_t *la_list_cap) 6101 { 6102 struct loc_at *la; 6103 Dwarf_Attribute *attr_list; 6104 Dwarf_Die ret_die; 6105 Dwarf_Unsigned off; 6106 Dwarf_Off ref; 6107 Dwarf_Signed attr_count; 6108 Dwarf_Half attr, form; 6109 Dwarf_Bool is_info; 6110 Dwarf_Error de; 6111 int i, ret; 6112 6113 is_info = dwarf_get_die_infotypes_flag(die); 6114 6115 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 6116 DW_DLV_OK) { 6117 if (ret == DW_DLV_ERROR) 6118 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 6119 goto cont_search; 6120 } 6121 for (i = 0; i < attr_count; i++) { 6122 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 6123 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 6124 continue; 6125 } 6126 if (attr != DW_AT_location && 6127 attr != DW_AT_string_length && 6128 attr != DW_AT_return_addr && 6129 attr != DW_AT_data_member_location && 6130 attr != DW_AT_frame_base && 6131 attr != DW_AT_segment && 6132 attr != DW_AT_static_link && 6133 attr != DW_AT_use_location && 6134 attr != DW_AT_vtable_elem_location) 6135 continue; 6136 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 6137 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 6138 continue; 6139 } 6140 if (form == DW_FORM_data4 || form == DW_FORM_data8) { 6141 if (dwarf_formudata(attr_list[i], &off, &de) != 6142 DW_DLV_OK) { 6143 warnx("dwarf_formudata failed: %s", 6144 dwarf_errmsg(de)); 6145 continue; 6146 } 6147 } else if (form == DW_FORM_sec_offset) { 6148 if (dwarf_global_formref(attr_list[i], &ref, &de) != 6149 DW_DLV_OK) { 6150 warnx("dwarf_global_formref failed: %s", 6151 dwarf_errmsg(de)); 6152 continue; 6153 } 6154 off = ref; 6155 } else 6156 continue; 6157 6158 if (*la_list_cap == *la_list_len) { 6159 *la_list = realloc(*la_list, 6160 *la_list_cap * 2 * sizeof(**la_list)); 6161 if (la_list == NULL) 6162 errx(EXIT_FAILURE, "realloc failed"); 6163 *la_list_cap *= 2; 6164 } 6165 la = &((*la_list)[*la_list_len]); 6166 la->la_at = attr_list[i]; 6167 la->la_off = off; 6168 la->la_lowpc = lowpc; 6169 la->la_cu_psize = re->cu_psize; 6170 la->la_cu_osize = re->cu_osize; 6171 la->la_cu_ver = re->cu_ver; 6172 (*la_list_len)++; 6173 } 6174 6175 cont_search: 6176 /* Search children. */ 6177 ret = dwarf_child(die, &ret_die, &de); 6178 if (ret == DW_DLV_ERROR) 6179 warnx("dwarf_child: %s", dwarf_errmsg(de)); 6180 else if (ret == DW_DLV_OK) 6181 search_loclist_at(re, ret_die, lowpc, la_list, 6182 la_list_len, la_list_cap); 6183 6184 /* Search sibling. */ 6185 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 6186 if (ret == DW_DLV_ERROR) 6187 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 6188 else if (ret == DW_DLV_OK) 6189 search_loclist_at(re, ret_die, lowpc, la_list, 6190 la_list_len, la_list_cap); 6191 } 6192 6193 static void 6194 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr) 6195 { 6196 const char *op_str; 6197 char unk_op[32]; 6198 uint8_t *b, n; 6199 int i; 6200 6201 if (dwarf_get_OP_name(lr->lr_atom, &op_str) != 6202 DW_DLV_OK) { 6203 snprintf(unk_op, sizeof(unk_op), 6204 "[Unknown OP: %#x]", lr->lr_atom); 6205 op_str = unk_op; 6206 } 6207 6208 printf("%s", op_str); 6209 6210 switch (lr->lr_atom) { 6211 case DW_OP_reg0: 6212 case DW_OP_reg1: 6213 case DW_OP_reg2: 6214 case DW_OP_reg3: 6215 case DW_OP_reg4: 6216 case DW_OP_reg5: 6217 case DW_OP_reg6: 6218 case DW_OP_reg7: 6219 case DW_OP_reg8: 6220 case DW_OP_reg9: 6221 case DW_OP_reg10: 6222 case DW_OP_reg11: 6223 case DW_OP_reg12: 6224 case DW_OP_reg13: 6225 case DW_OP_reg14: 6226 case DW_OP_reg15: 6227 case DW_OP_reg16: 6228 case DW_OP_reg17: 6229 case DW_OP_reg18: 6230 case DW_OP_reg19: 6231 case DW_OP_reg20: 6232 case DW_OP_reg21: 6233 case DW_OP_reg22: 6234 case DW_OP_reg23: 6235 case DW_OP_reg24: 6236 case DW_OP_reg25: 6237 case DW_OP_reg26: 6238 case DW_OP_reg27: 6239 case DW_OP_reg28: 6240 case DW_OP_reg29: 6241 case DW_OP_reg30: 6242 case DW_OP_reg31: 6243 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0)); 6244 break; 6245 6246 case DW_OP_deref: 6247 case DW_OP_lit0: 6248 case DW_OP_lit1: 6249 case DW_OP_lit2: 6250 case DW_OP_lit3: 6251 case DW_OP_lit4: 6252 case DW_OP_lit5: 6253 case DW_OP_lit6: 6254 case DW_OP_lit7: 6255 case DW_OP_lit8: 6256 case DW_OP_lit9: 6257 case DW_OP_lit10: 6258 case DW_OP_lit11: 6259 case DW_OP_lit12: 6260 case DW_OP_lit13: 6261 case DW_OP_lit14: 6262 case DW_OP_lit15: 6263 case DW_OP_lit16: 6264 case DW_OP_lit17: 6265 case DW_OP_lit18: 6266 case DW_OP_lit19: 6267 case DW_OP_lit20: 6268 case DW_OP_lit21: 6269 case DW_OP_lit22: 6270 case DW_OP_lit23: 6271 case DW_OP_lit24: 6272 case DW_OP_lit25: 6273 case DW_OP_lit26: 6274 case DW_OP_lit27: 6275 case DW_OP_lit28: 6276 case DW_OP_lit29: 6277 case DW_OP_lit30: 6278 case DW_OP_lit31: 6279 case DW_OP_dup: 6280 case DW_OP_drop: 6281 case DW_OP_over: 6282 case DW_OP_swap: 6283 case DW_OP_rot: 6284 case DW_OP_xderef: 6285 case DW_OP_abs: 6286 case DW_OP_and: 6287 case DW_OP_div: 6288 case DW_OP_minus: 6289 case DW_OP_mod: 6290 case DW_OP_mul: 6291 case DW_OP_neg: 6292 case DW_OP_not: 6293 case DW_OP_or: 6294 case DW_OP_plus: 6295 case DW_OP_shl: 6296 case DW_OP_shr: 6297 case DW_OP_shra: 6298 case DW_OP_xor: 6299 case DW_OP_eq: 6300 case DW_OP_ge: 6301 case DW_OP_gt: 6302 case DW_OP_le: 6303 case DW_OP_lt: 6304 case DW_OP_ne: 6305 case DW_OP_nop: 6306 case DW_OP_push_object_address: 6307 case DW_OP_form_tls_address: 6308 case DW_OP_call_frame_cfa: 6309 case DW_OP_stack_value: 6310 case DW_OP_GNU_push_tls_address: 6311 case DW_OP_GNU_uninit: 6312 break; 6313 6314 case DW_OP_const1u: 6315 case DW_OP_pick: 6316 case DW_OP_deref_size: 6317 case DW_OP_xderef_size: 6318 case DW_OP_const2u: 6319 case DW_OP_bra: 6320 case DW_OP_skip: 6321 case DW_OP_const4u: 6322 case DW_OP_const8u: 6323 case DW_OP_constu: 6324 case DW_OP_plus_uconst: 6325 case DW_OP_regx: 6326 case DW_OP_piece: 6327 printf(": %ju", (uintmax_t) 6328 lr->lr_number); 6329 break; 6330 6331 case DW_OP_const1s: 6332 case DW_OP_const2s: 6333 case DW_OP_const4s: 6334 case DW_OP_const8s: 6335 case DW_OP_consts: 6336 printf(": %jd", (intmax_t) 6337 lr->lr_number); 6338 break; 6339 6340 case DW_OP_breg0: 6341 case DW_OP_breg1: 6342 case DW_OP_breg2: 6343 case DW_OP_breg3: 6344 case DW_OP_breg4: 6345 case DW_OP_breg5: 6346 case DW_OP_breg6: 6347 case DW_OP_breg7: 6348 case DW_OP_breg8: 6349 case DW_OP_breg9: 6350 case DW_OP_breg10: 6351 case DW_OP_breg11: 6352 case DW_OP_breg12: 6353 case DW_OP_breg13: 6354 case DW_OP_breg14: 6355 case DW_OP_breg15: 6356 case DW_OP_breg16: 6357 case DW_OP_breg17: 6358 case DW_OP_breg18: 6359 case DW_OP_breg19: 6360 case DW_OP_breg20: 6361 case DW_OP_breg21: 6362 case DW_OP_breg22: 6363 case DW_OP_breg23: 6364 case DW_OP_breg24: 6365 case DW_OP_breg25: 6366 case DW_OP_breg26: 6367 case DW_OP_breg27: 6368 case DW_OP_breg28: 6369 case DW_OP_breg29: 6370 case DW_OP_breg30: 6371 case DW_OP_breg31: 6372 printf(" (%s): %jd", 6373 dwarf_regname(re, lr->lr_atom - DW_OP_breg0), 6374 (intmax_t) lr->lr_number); 6375 break; 6376 6377 case DW_OP_fbreg: 6378 printf(": %jd", (intmax_t) 6379 lr->lr_number); 6380 break; 6381 6382 case DW_OP_bregx: 6383 printf(": %ju (%s) %jd", 6384 (uintmax_t) lr->lr_number, 6385 dwarf_regname(re, (unsigned int) lr->lr_number), 6386 (intmax_t) lr->lr_number2); 6387 break; 6388 6389 case DW_OP_addr: 6390 case DW_OP_GNU_encoded_addr: 6391 printf(": %#jx", (uintmax_t) 6392 lr->lr_number); 6393 break; 6394 6395 case DW_OP_GNU_implicit_pointer: 6396 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number, 6397 (intmax_t) lr->lr_number2); 6398 break; 6399 6400 case DW_OP_implicit_value: 6401 printf(": %ju byte block:", (uintmax_t) lr->lr_number); 6402 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6403 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++) 6404 printf(" %x", b[i]); 6405 break; 6406 6407 case DW_OP_GNU_entry_value: 6408 printf(": ("); 6409 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2, 6410 lr->lr_number); 6411 putchar(')'); 6412 break; 6413 6414 case DW_OP_GNU_const_type: 6415 printf(": <0x%jx> ", (uintmax_t) lr->lr_number); 6416 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6417 n = *b; 6418 for (i = 1; (uint8_t) i < n; i++) 6419 printf(" %x", b[i]); 6420 break; 6421 6422 case DW_OP_GNU_regval_type: 6423 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number, 6424 dwarf_regname(re, (unsigned int) lr->lr_number), 6425 (uintmax_t) lr->lr_number2); 6426 break; 6427 6428 case DW_OP_GNU_convert: 6429 case DW_OP_GNU_deref_type: 6430 case DW_OP_GNU_parameter_ref: 6431 case DW_OP_GNU_reinterpret: 6432 printf(": <0x%jx>", (uintmax_t) lr->lr_number); 6433 break; 6434 6435 default: 6436 break; 6437 } 6438 } 6439 6440 static void 6441 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len) 6442 { 6443 Dwarf_Locdesc *llbuf; 6444 Dwarf_Signed lcnt; 6445 Dwarf_Error de; 6446 int i; 6447 6448 if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize, 6449 re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) { 6450 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de)); 6451 return; 6452 } 6453 6454 for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) { 6455 dump_dwarf_loc(re, &llbuf->ld_s[i]); 6456 if (i < llbuf->ld_cents - 1) 6457 printf("; "); 6458 } 6459 6460 dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK); 6461 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC); 6462 } 6463 6464 static void 6465 dump_dwarf_loclist(struct readelf *re) 6466 { 6467 Dwarf_Die die; 6468 Dwarf_Locdesc **llbuf; 6469 Dwarf_Unsigned lowpc; 6470 Dwarf_Signed lcnt; 6471 Dwarf_Half tag, version, pointer_size, off_size; 6472 Dwarf_Error de; 6473 struct loc_at *la_list, *left, *right, *la; 6474 size_t la_list_len, la_list_cap; 6475 unsigned int duplicates, k; 6476 int i, j, ret, has_content; 6477 6478 la_list_len = 0; 6479 la_list_cap = 200; 6480 if ((la_list = calloc(la_list_cap, sizeof(struct loc_at))) == NULL) 6481 errx(EXIT_FAILURE, "calloc failed"); 6482 /* Search .debug_info section. */ 6483 while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL, 6484 &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) { 6485 set_cu_context(re, pointer_size, off_size, version); 6486 die = NULL; 6487 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 6488 continue; 6489 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6490 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 6491 continue; 6492 } 6493 /* XXX: What about DW_TAG_partial_unit? */ 6494 lowpc = 0; 6495 if (tag == DW_TAG_compile_unit) { 6496 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6497 &lowpc, &de) != DW_DLV_OK) 6498 lowpc = 0; 6499 } 6500 6501 /* Search attributes for reference to .debug_loc section. */ 6502 search_loclist_at(re, die, lowpc, &la_list, 6503 &la_list_len, &la_list_cap); 6504 } 6505 if (ret == DW_DLV_ERROR) 6506 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6507 6508 /* Search .debug_types section. */ 6509 do { 6510 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL, 6511 &version, NULL, &pointer_size, &off_size, NULL, NULL, 6512 NULL, NULL, &de)) == DW_DLV_OK) { 6513 set_cu_context(re, pointer_size, off_size, version); 6514 die = NULL; 6515 if (dwarf_siblingof(re->dbg, die, &die, &de) != 6516 DW_DLV_OK) 6517 continue; 6518 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6519 warnx("dwarf_tag failed: %s", 6520 dwarf_errmsg(de)); 6521 continue; 6522 } 6523 6524 lowpc = 0; 6525 if (tag == DW_TAG_type_unit) { 6526 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6527 &lowpc, &de) != DW_DLV_OK) 6528 lowpc = 0; 6529 } 6530 6531 /* 6532 * Search attributes for reference to .debug_loc 6533 * section. 6534 */ 6535 search_loclist_at(re, die, lowpc, &la_list, 6536 &la_list_len, &la_list_cap); 6537 } 6538 if (ret == DW_DLV_ERROR) 6539 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6540 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 6541 6542 if (la_list_len == 0) { 6543 free(la_list); 6544 return; 6545 } 6546 6547 /* Sort la_list using loc_at_comparator. */ 6548 qsort(la_list, la_list_len, sizeof(struct loc_at), loc_at_comparator); 6549 6550 /* Get rid of the duplicates in la_list. */ 6551 duplicates = 0; 6552 for (k = 1; k < la_list_len; ++k) { 6553 left = &la_list[k - 1 - duplicates]; 6554 right = &la_list[k]; 6555 6556 if (left->la_off == right->la_off) 6557 duplicates++; 6558 else 6559 la_list[k - duplicates] = *right; 6560 } 6561 la_list_len -= duplicates; 6562 6563 has_content = 0; 6564 for (k = 0; k < la_list_len; ++k) { 6565 la = &la_list[k]; 6566 if ((ret = dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de)) != 6567 DW_DLV_OK) { 6568 if (ret != DW_DLV_NO_ENTRY) 6569 warnx("dwarf_loclist_n failed: %s", 6570 dwarf_errmsg(de)); 6571 continue; 6572 } 6573 if (!has_content) { 6574 has_content = 1; 6575 printf("\nContents of section .debug_loc:\n"); 6576 printf(" Offset Begin End Expression\n"); 6577 } 6578 set_cu_context(re, la->la_cu_psize, la->la_cu_osize, 6579 la->la_cu_ver); 6580 for (i = 0; i < lcnt; i++) { 6581 printf(" %8.8jx ", (uintmax_t) la->la_off); 6582 if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) { 6583 printf("<End of list>\n"); 6584 continue; 6585 } 6586 6587 /* TODO: handle base selection entry. */ 6588 6589 printf("%8.8jx %8.8jx ", 6590 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc), 6591 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc)); 6592 6593 putchar('('); 6594 for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) { 6595 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]); 6596 if (j < llbuf[i]->ld_cents - 1) 6597 printf("; "); 6598 } 6599 putchar(')'); 6600 6601 if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc) 6602 printf(" (start == end)"); 6603 putchar('\n'); 6604 } 6605 for (i = 0; i < lcnt; i++) { 6606 dwarf_dealloc(re->dbg, llbuf[i]->ld_s, 6607 DW_DLA_LOC_BLOCK); 6608 dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC); 6609 } 6610 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST); 6611 } 6612 6613 if (!has_content) 6614 printf("\nSection '.debug_loc' has no debugging data.\n"); 6615 6616 free(la_list); 6617 } 6618 6619 /* 6620 * Retrieve a string using string table section index and the string offset. 6621 */ 6622 static const char* 6623 get_string(struct readelf *re, int strtab, size_t off) 6624 { 6625 const char *name; 6626 6627 if ((name = elf_strptr(re->elf, strtab, off)) == NULL) 6628 return (""); 6629 6630 return (name); 6631 } 6632 6633 /* 6634 * Retrieve the name of a symbol using the section index of the symbol 6635 * table and the index of the symbol within that table. 6636 */ 6637 static const char * 6638 get_symbol_name(struct readelf *re, int symtab, int i) 6639 { 6640 struct section *s; 6641 const char *name; 6642 GElf_Sym sym; 6643 Elf_Data *data; 6644 int elferr; 6645 6646 s = &re->sl[symtab]; 6647 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6648 return (""); 6649 (void) elf_errno(); 6650 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6651 elferr = elf_errno(); 6652 if (elferr != 0) 6653 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6654 return (""); 6655 } 6656 if (gelf_getsym(data, i, &sym) != &sym) 6657 return (""); 6658 /* Return section name for STT_SECTION symbol. */ 6659 if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) { 6660 if (sym.st_shndx < re->shnum && 6661 re->sl[sym.st_shndx].name != NULL) 6662 return (re->sl[sym.st_shndx].name); 6663 return (""); 6664 } 6665 if (s->link >= re->shnum || 6666 (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL) 6667 return (""); 6668 6669 return (name); 6670 } 6671 6672 static uint64_t 6673 get_symbol_value(struct readelf *re, int symtab, int i) 6674 { 6675 struct section *s; 6676 GElf_Sym sym; 6677 Elf_Data *data; 6678 int elferr; 6679 6680 s = &re->sl[symtab]; 6681 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6682 return (0); 6683 (void) elf_errno(); 6684 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6685 elferr = elf_errno(); 6686 if (elferr != 0) 6687 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6688 return (0); 6689 } 6690 if (gelf_getsym(data, i, &sym) != &sym) 6691 return (0); 6692 6693 return (sym.st_value); 6694 } 6695 6696 static void 6697 hex_dump(struct readelf *re) 6698 { 6699 struct section *s; 6700 Elf_Data *d; 6701 uint8_t *buf; 6702 size_t sz, nbytes; 6703 uint64_t addr; 6704 int elferr, i, j; 6705 6706 for (i = 1; (size_t) i < re->shnum; i++) { 6707 s = &re->sl[i]; 6708 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL) 6709 continue; 6710 (void) elf_errno(); 6711 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6712 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6713 elferr = elf_errno(); 6714 if (elferr != 0) 6715 warnx("elf_getdata failed: %s", 6716 elf_errmsg(elferr)); 6717 continue; 6718 } 6719 (void) elf_errno(); 6720 if (d->d_size <= 0 || d->d_buf == NULL) { 6721 printf("\nSection '%s' has no data to dump.\n", 6722 s->name); 6723 continue; 6724 } 6725 buf = d->d_buf; 6726 sz = d->d_size; 6727 addr = s->addr; 6728 printf("\nHex dump of section '%s':\n", s->name); 6729 while (sz > 0) { 6730 printf(" 0x%8.8jx ", (uintmax_t)addr); 6731 nbytes = sz > 16? 16 : sz; 6732 for (j = 0; j < 16; j++) { 6733 if ((size_t)j < nbytes) 6734 printf("%2.2x", buf[j]); 6735 else 6736 printf(" "); 6737 if ((j & 3) == 3) 6738 printf(" "); 6739 } 6740 for (j = 0; (size_t)j < nbytes; j++) { 6741 if (isprint(buf[j])) 6742 printf("%c", buf[j]); 6743 else 6744 printf("."); 6745 } 6746 printf("\n"); 6747 buf += nbytes; 6748 addr += nbytes; 6749 sz -= nbytes; 6750 } 6751 } 6752 } 6753 6754 static void 6755 str_dump(struct readelf *re) 6756 { 6757 struct section *s; 6758 Elf_Data *d; 6759 unsigned char *start, *end, *buf_end; 6760 unsigned int len; 6761 int i, j, elferr, found; 6762 6763 for (i = 1; (size_t) i < re->shnum; i++) { 6764 s = &re->sl[i]; 6765 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL) 6766 continue; 6767 (void) elf_errno(); 6768 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6769 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6770 elferr = elf_errno(); 6771 if (elferr != 0) 6772 warnx("elf_getdata failed: %s", 6773 elf_errmsg(elferr)); 6774 continue; 6775 } 6776 (void) elf_errno(); 6777 if (d->d_size <= 0 || d->d_buf == NULL) { 6778 printf("\nSection '%s' has no data to dump.\n", 6779 s->name); 6780 continue; 6781 } 6782 buf_end = (unsigned char *) d->d_buf + d->d_size; 6783 start = (unsigned char *) d->d_buf; 6784 found = 0; 6785 printf("\nString dump of section '%s':\n", s->name); 6786 for (;;) { 6787 while (start < buf_end && !isprint(*start)) 6788 start++; 6789 if (start >= buf_end) 6790 break; 6791 end = start + 1; 6792 while (end < buf_end && isprint(*end)) 6793 end++; 6794 printf(" [%6lx] ", 6795 (long) (start - (unsigned char *) d->d_buf)); 6796 len = end - start; 6797 for (j = 0; (unsigned int) j < len; j++) 6798 putchar(start[j]); 6799 putchar('\n'); 6800 found = 1; 6801 if (end >= buf_end) 6802 break; 6803 start = end + 1; 6804 } 6805 if (!found) 6806 printf(" No strings found in this section."); 6807 putchar('\n'); 6808 } 6809 } 6810 6811 static void 6812 load_sections(struct readelf *re) 6813 { 6814 struct section *s; 6815 const char *name; 6816 Elf_Scn *scn; 6817 GElf_Shdr sh; 6818 size_t shstrndx, ndx; 6819 int elferr; 6820 6821 /* Allocate storage for internal section list. */ 6822 if (!elf_getshnum(re->elf, &re->shnum)) { 6823 warnx("elf_getshnum failed: %s", elf_errmsg(-1)); 6824 return; 6825 } 6826 if (re->sl != NULL) 6827 free(re->sl); 6828 if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL) 6829 err(EXIT_FAILURE, "calloc failed"); 6830 6831 /* Get the index of .shstrtab section. */ 6832 if (!elf_getshstrndx(re->elf, &shstrndx)) { 6833 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1)); 6834 return; 6835 } 6836 6837 if ((scn = elf_getscn(re->elf, 0)) == NULL) 6838 return; 6839 6840 (void) elf_errno(); 6841 do { 6842 if (gelf_getshdr(scn, &sh) == NULL) { 6843 warnx("gelf_getshdr failed: %s", elf_errmsg(-1)); 6844 (void) elf_errno(); 6845 continue; 6846 } 6847 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) { 6848 (void) elf_errno(); 6849 name = "<no-name>"; 6850 } 6851 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) { 6852 if ((elferr = elf_errno()) != 0) { 6853 warnx("elf_ndxscn failed: %s", 6854 elf_errmsg(elferr)); 6855 continue; 6856 } 6857 } 6858 if (ndx >= re->shnum) { 6859 warnx("section index of '%s' out of range", name); 6860 continue; 6861 } 6862 if (sh.sh_link >= re->shnum) 6863 warnx("section link %llu of '%s' out of range", 6864 (unsigned long long)sh.sh_link, name); 6865 s = &re->sl[ndx]; 6866 s->name = name; 6867 s->scn = scn; 6868 s->off = sh.sh_offset; 6869 s->sz = sh.sh_size; 6870 s->entsize = sh.sh_entsize; 6871 s->align = sh.sh_addralign; 6872 s->type = sh.sh_type; 6873 s->flags = sh.sh_flags; 6874 s->addr = sh.sh_addr; 6875 s->link = sh.sh_link; 6876 s->info = sh.sh_info; 6877 } while ((scn = elf_nextscn(re->elf, scn)) != NULL); 6878 elferr = elf_errno(); 6879 if (elferr != 0) 6880 warnx("elf_nextscn failed: %s", elf_errmsg(elferr)); 6881 } 6882 6883 static void 6884 unload_sections(struct readelf *re) 6885 { 6886 6887 if (re->sl != NULL) { 6888 free(re->sl); 6889 re->sl = NULL; 6890 } 6891 re->shnum = 0; 6892 re->vd_s = NULL; 6893 re->vn_s = NULL; 6894 re->vs_s = NULL; 6895 re->vs = NULL; 6896 re->vs_sz = 0; 6897 if (re->ver != NULL) { 6898 free(re->ver); 6899 re->ver = NULL; 6900 re->ver_sz = 0; 6901 } 6902 } 6903 6904 static void 6905 dump_elf(struct readelf *re) 6906 { 6907 6908 /* Fetch ELF header. No need to continue if it fails. */ 6909 if (gelf_getehdr(re->elf, &re->ehdr) == NULL) { 6910 warnx("gelf_getehdr failed: %s", elf_errmsg(-1)); 6911 return; 6912 } 6913 if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) { 6914 warnx("gelf_getclass failed: %s", elf_errmsg(-1)); 6915 return; 6916 } 6917 if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) { 6918 re->dw_read = _read_msb; 6919 re->dw_decode = _decode_msb; 6920 } else { 6921 re->dw_read = _read_lsb; 6922 re->dw_decode = _decode_lsb; 6923 } 6924 6925 if (re->options & ~RE_H) 6926 load_sections(re); 6927 if ((re->options & RE_VV) || (re->options & RE_S)) 6928 search_ver(re); 6929 if (re->options & RE_H) 6930 dump_ehdr(re); 6931 if (re->options & RE_L) 6932 dump_phdr(re); 6933 if (re->options & RE_SS) 6934 dump_shdr(re); 6935 if (re->options & RE_G) 6936 dump_section_groups(re); 6937 if (re->options & RE_D) 6938 dump_dynamic(re); 6939 if (re->options & RE_R) 6940 dump_reloc(re); 6941 if (re->options & RE_S) 6942 dump_symtabs(re); 6943 if (re->options & RE_N) 6944 dump_notes(re); 6945 if (re->options & RE_II) 6946 dump_hash(re); 6947 if (re->options & RE_X) 6948 hex_dump(re); 6949 if (re->options & RE_P) 6950 str_dump(re); 6951 if (re->options & RE_VV) 6952 dump_ver(re); 6953 if (re->options & RE_AA) 6954 dump_arch_specific_info(re); 6955 if (re->options & RE_W) 6956 dump_dwarf(re); 6957 if (re->options & ~RE_H) 6958 unload_sections(re); 6959 } 6960 6961 static void 6962 dump_dwarf(struct readelf *re) 6963 { 6964 Dwarf_Error de; 6965 int error; 6966 6967 if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) { 6968 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL) 6969 errx(EXIT_FAILURE, "dwarf_elf_init failed: %s", 6970 dwarf_errmsg(de)); 6971 return; 6972 } 6973 6974 if (re->dop & DW_A) 6975 dump_dwarf_abbrev(re); 6976 if (re->dop & DW_L) 6977 dump_dwarf_line(re); 6978 if (re->dop & DW_LL) 6979 dump_dwarf_line_decoded(re); 6980 if (re->dop & DW_I) { 6981 dump_dwarf_info(re, 0); 6982 dump_dwarf_info(re, 1); 6983 } 6984 if (re->dop & DW_P) 6985 dump_dwarf_pubnames(re); 6986 if (re->dop & DW_R) 6987 dump_dwarf_aranges(re); 6988 if (re->dop & DW_RR) 6989 dump_dwarf_ranges(re); 6990 if (re->dop & DW_M) 6991 dump_dwarf_macinfo(re); 6992 if (re->dop & DW_F) 6993 dump_dwarf_frame(re, 0); 6994 else if (re->dop & DW_FF) 6995 dump_dwarf_frame(re, 1); 6996 if (re->dop & DW_S) 6997 dump_dwarf_str(re); 6998 if (re->dop & DW_O) 6999 dump_dwarf_loclist(re); 7000 7001 dwarf_finish(re->dbg, &de); 7002 } 7003 7004 static void 7005 dump_ar(struct readelf *re, int fd) 7006 { 7007 Elf_Arsym *arsym; 7008 Elf_Arhdr *arhdr; 7009 Elf_Cmd cmd; 7010 Elf *e; 7011 size_t sz; 7012 off_t off; 7013 int i; 7014 7015 re->ar = re->elf; 7016 7017 if (re->options & RE_C) { 7018 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) { 7019 warnx("elf_getarsym() failed: %s", elf_errmsg(-1)); 7020 goto process_members; 7021 } 7022 printf("Index of archive %s: (%ju entries)\n", re->filename, 7023 (uintmax_t) sz - 1); 7024 off = 0; 7025 for (i = 0; (size_t) i < sz; i++) { 7026 if (arsym[i].as_name == NULL) 7027 break; 7028 if (arsym[i].as_off != off) { 7029 off = arsym[i].as_off; 7030 if (elf_rand(re->ar, off) != off) { 7031 warnx("elf_rand() failed: %s", 7032 elf_errmsg(-1)); 7033 continue; 7034 } 7035 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) == 7036 NULL) { 7037 warnx("elf_begin() failed: %s", 7038 elf_errmsg(-1)); 7039 continue; 7040 } 7041 if ((arhdr = elf_getarhdr(e)) == NULL) { 7042 warnx("elf_getarhdr() failed: %s", 7043 elf_errmsg(-1)); 7044 elf_end(e); 7045 continue; 7046 } 7047 printf("Binary %s(%s) contains:\n", 7048 re->filename, arhdr->ar_name); 7049 } 7050 printf("\t%s\n", arsym[i].as_name); 7051 } 7052 if (elf_rand(re->ar, SARMAG) != SARMAG) { 7053 warnx("elf_rand() failed: %s", elf_errmsg(-1)); 7054 return; 7055 } 7056 } 7057 7058 process_members: 7059 7060 if ((re->options & ~RE_C) == 0) 7061 return; 7062 7063 cmd = ELF_C_READ; 7064 while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) { 7065 if ((arhdr = elf_getarhdr(re->elf)) == NULL) { 7066 warnx("elf_getarhdr() failed: %s", elf_errmsg(-1)); 7067 goto next_member; 7068 } 7069 if (strcmp(arhdr->ar_name, "/") == 0 || 7070 strcmp(arhdr->ar_name, "//") == 0 || 7071 strcmp(arhdr->ar_name, "__.SYMDEF") == 0) 7072 goto next_member; 7073 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name); 7074 dump_elf(re); 7075 7076 next_member: 7077 cmd = elf_next(re->elf); 7078 elf_end(re->elf); 7079 } 7080 re->elf = re->ar; 7081 } 7082 7083 static void 7084 dump_object(struct readelf *re) 7085 { 7086 int fd; 7087 7088 if ((fd = open(re->filename, O_RDONLY)) == -1) { 7089 warn("open %s failed", re->filename); 7090 return; 7091 } 7092 7093 if ((re->flags & DISPLAY_FILENAME) != 0) 7094 printf("\nFile: %s\n", re->filename); 7095 7096 if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { 7097 warnx("elf_begin() failed: %s", elf_errmsg(-1)); 7098 return; 7099 } 7100 7101 switch (elf_kind(re->elf)) { 7102 case ELF_K_NONE: 7103 warnx("Not an ELF file."); 7104 return; 7105 case ELF_K_ELF: 7106 dump_elf(re); 7107 break; 7108 case ELF_K_AR: 7109 dump_ar(re, fd); 7110 break; 7111 default: 7112 warnx("Internal: libelf returned unknown elf kind."); 7113 return; 7114 } 7115 7116 elf_end(re->elf); 7117 } 7118 7119 static void 7120 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7121 { 7122 struct dumpop *d; 7123 7124 if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) { 7125 if ((d = calloc(1, sizeof(*d))) == NULL) 7126 err(EXIT_FAILURE, "calloc failed"); 7127 if (t == DUMP_BY_INDEX) 7128 d->u.si = si; 7129 else 7130 d->u.sn = sn; 7131 d->type = t; 7132 d->op = op; 7133 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list); 7134 } else 7135 d->op |= op; 7136 } 7137 7138 static struct dumpop * 7139 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7140 { 7141 struct dumpop *d; 7142 7143 STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) { 7144 if ((op == -1 || op & d->op) && 7145 (t == -1 || (unsigned) t == d->type)) { 7146 if ((d->type == DUMP_BY_INDEX && d->u.si == si) || 7147 (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn))) 7148 return (d); 7149 } 7150 } 7151 7152 return (NULL); 7153 } 7154 7155 static struct { 7156 const char *ln; 7157 char sn; 7158 int value; 7159 } dwarf_op[] = { 7160 {"rawline", 'l', DW_L}, 7161 {"decodedline", 'L', DW_LL}, 7162 {"info", 'i', DW_I}, 7163 {"abbrev", 'a', DW_A}, 7164 {"pubnames", 'p', DW_P}, 7165 {"aranges", 'r', DW_R}, 7166 {"ranges", 'r', DW_R}, 7167 {"Ranges", 'R', DW_RR}, 7168 {"macro", 'm', DW_M}, 7169 {"frames", 'f', DW_F}, 7170 {"frames-interp", 'F', DW_FF}, 7171 {"str", 's', DW_S}, 7172 {"loc", 'o', DW_O}, 7173 {NULL, 0, 0} 7174 }; 7175 7176 static void 7177 parse_dwarf_op_short(struct readelf *re, const char *op) 7178 { 7179 int i; 7180 7181 if (op == NULL) { 7182 re->dop |= DW_DEFAULT_OPTIONS; 7183 return; 7184 } 7185 7186 for (; *op != '\0'; op++) { 7187 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7188 if (dwarf_op[i].sn == *op) { 7189 re->dop |= dwarf_op[i].value; 7190 break; 7191 } 7192 } 7193 } 7194 } 7195 7196 static void 7197 parse_dwarf_op_long(struct readelf *re, const char *op) 7198 { 7199 char *p, *token, *bp; 7200 int i; 7201 7202 if (op == NULL) { 7203 re->dop |= DW_DEFAULT_OPTIONS; 7204 return; 7205 } 7206 7207 if ((p = strdup(op)) == NULL) 7208 err(EXIT_FAILURE, "strdup failed"); 7209 bp = p; 7210 7211 while ((token = strsep(&p, ",")) != NULL) { 7212 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7213 if (!strcmp(token, dwarf_op[i].ln)) { 7214 re->dop |= dwarf_op[i].value; 7215 break; 7216 } 7217 } 7218 } 7219 7220 free(bp); 7221 } 7222 7223 static uint64_t 7224 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7225 { 7226 uint64_t ret; 7227 uint8_t *src; 7228 7229 src = (uint8_t *) d->d_buf + *offsetp; 7230 7231 ret = 0; 7232 switch (bytes_to_read) { 7233 case 8: 7234 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7235 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7236 /* FALLTHROUGH */ 7237 case 4: 7238 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7239 /* FALLTHROUGH */ 7240 case 2: 7241 ret |= ((uint64_t) src[1]) << 8; 7242 /* FALLTHROUGH */ 7243 case 1: 7244 ret |= src[0]; 7245 break; 7246 default: 7247 return (0); 7248 } 7249 7250 *offsetp += bytes_to_read; 7251 7252 return (ret); 7253 } 7254 7255 static uint64_t 7256 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7257 { 7258 uint64_t ret; 7259 uint8_t *src; 7260 7261 src = (uint8_t *) d->d_buf + *offsetp; 7262 7263 switch (bytes_to_read) { 7264 case 1: 7265 ret = src[0]; 7266 break; 7267 case 2: 7268 ret = src[1] | ((uint64_t) src[0]) << 8; 7269 break; 7270 case 4: 7271 ret = src[3] | ((uint64_t) src[2]) << 8; 7272 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7273 break; 7274 case 8: 7275 ret = src[7] | ((uint64_t) src[6]) << 8; 7276 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7277 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7278 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7279 break; 7280 default: 7281 return (0); 7282 } 7283 7284 *offsetp += bytes_to_read; 7285 7286 return (ret); 7287 } 7288 7289 static uint64_t 7290 _decode_lsb(uint8_t **data, int bytes_to_read) 7291 { 7292 uint64_t ret; 7293 uint8_t *src; 7294 7295 src = *data; 7296 7297 ret = 0; 7298 switch (bytes_to_read) { 7299 case 8: 7300 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7301 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7302 /* FALLTHROUGH */ 7303 case 4: 7304 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7305 /* FALLTHROUGH */ 7306 case 2: 7307 ret |= ((uint64_t) src[1]) << 8; 7308 /* FALLTHROUGH */ 7309 case 1: 7310 ret |= src[0]; 7311 break; 7312 default: 7313 return (0); 7314 } 7315 7316 *data += bytes_to_read; 7317 7318 return (ret); 7319 } 7320 7321 static uint64_t 7322 _decode_msb(uint8_t **data, int bytes_to_read) 7323 { 7324 uint64_t ret; 7325 uint8_t *src; 7326 7327 src = *data; 7328 7329 ret = 0; 7330 switch (bytes_to_read) { 7331 case 1: 7332 ret = src[0]; 7333 break; 7334 case 2: 7335 ret = src[1] | ((uint64_t) src[0]) << 8; 7336 break; 7337 case 4: 7338 ret = src[3] | ((uint64_t) src[2]) << 8; 7339 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7340 break; 7341 case 8: 7342 ret = src[7] | ((uint64_t) src[6]) << 8; 7343 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7344 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7345 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7346 break; 7347 default: 7348 return (0); 7349 break; 7350 } 7351 7352 *data += bytes_to_read; 7353 7354 return (ret); 7355 } 7356 7357 static int64_t 7358 _decode_sleb128(uint8_t **dp, uint8_t *dpe) 7359 { 7360 int64_t ret = 0; 7361 uint8_t b = 0; 7362 int shift = 0; 7363 7364 uint8_t *src = *dp; 7365 7366 do { 7367 if (src >= dpe) 7368 break; 7369 b = *src++; 7370 ret |= ((b & 0x7f) << shift); 7371 shift += 7; 7372 } while ((b & 0x80) != 0); 7373 7374 if (shift < 32 && (b & 0x40) != 0) 7375 ret |= (-1 << shift); 7376 7377 *dp = src; 7378 7379 return (ret); 7380 } 7381 7382 static uint64_t 7383 _decode_uleb128(uint8_t **dp, uint8_t *dpe) 7384 { 7385 uint64_t ret = 0; 7386 uint8_t b; 7387 int shift = 0; 7388 7389 uint8_t *src = *dp; 7390 7391 do { 7392 if (src >= dpe) 7393 break; 7394 b = *src++; 7395 ret |= ((b & 0x7f) << shift); 7396 shift += 7; 7397 } while ((b & 0x80) != 0); 7398 7399 *dp = src; 7400 7401 return (ret); 7402 } 7403 7404 static void 7405 readelf_version(void) 7406 { 7407 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), 7408 elftc_version()); 7409 exit(EXIT_SUCCESS); 7410 } 7411 7412 #define USAGE_MESSAGE "\ 7413 Usage: %s [options] file...\n\ 7414 Display information about ELF objects and ar(1) archives.\n\n\ 7415 Options:\n\ 7416 -a | --all Equivalent to specifying options '-dhIlrsASV'.\n\ 7417 -c | --archive-index Print the archive symbol table for archives.\n\ 7418 -d | --dynamic Print the contents of SHT_DYNAMIC sections.\n\ 7419 -e | --headers Print all headers in the object.\n\ 7420 -g | --section-groups Print the contents of the section groups.\n\ 7421 -h | --file-header Print the file header for the object.\n\ 7422 -l | --program-headers Print the PHDR table for the object.\n\ 7423 -n | --notes Print the contents of SHT_NOTE sections.\n\ 7424 -p INDEX | --string-dump=INDEX\n\ 7425 Print the contents of section at index INDEX.\n\ 7426 -r | --relocs Print relocation information.\n\ 7427 -s | --syms | --symbols Print symbol tables.\n\ 7428 -t | --section-details Print additional information about sections.\n\ 7429 -v | --version Print a version identifier and exit.\n\ 7430 -w[afilmoprsFLR] | --debug-dump={abbrev,aranges,decodedline,frames,\n\ 7431 frames-interp,info,loc,macro,pubnames,\n\ 7432 ranges,Ranges,rawline,str}\n\ 7433 Display DWARF information.\n\ 7434 -x INDEX | --hex-dump=INDEX\n\ 7435 Display contents of a section as hexadecimal.\n\ 7436 -A | --arch-specific (accepted, but ignored)\n\ 7437 -D | --use-dynamic Print the symbol table specified by the DT_SYMTAB\n\ 7438 entry in the \".dynamic\" section.\n\ 7439 -H | --help Print a help message.\n\ 7440 -I | --histogram Print information on bucket list lengths for \n\ 7441 hash sections.\n\ 7442 -N | --full-section-name (accepted, but ignored)\n\ 7443 -S | --sections | --section-headers\n\ 7444 Print information about section headers.\n\ 7445 -V | --version-info Print symbol versoning information.\n\ 7446 -W | --wide Print information without wrapping long lines.\n" 7447 7448 7449 static void 7450 readelf_usage(int status) 7451 { 7452 fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME()); 7453 exit(status); 7454 } 7455 7456 int 7457 main(int argc, char **argv) 7458 { 7459 struct readelf *re, re_storage; 7460 unsigned long si; 7461 int opt, i; 7462 char *ep; 7463 7464 re = &re_storage; 7465 memset(re, 0, sizeof(*re)); 7466 STAILQ_INIT(&re->v_dumpop); 7467 7468 while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:", 7469 longopts, NULL)) != -1) { 7470 switch(opt) { 7471 case '?': 7472 readelf_usage(EXIT_SUCCESS); 7473 break; 7474 case 'A': 7475 re->options |= RE_AA; 7476 break; 7477 case 'a': 7478 re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II | 7479 RE_L | RE_R | RE_SS | RE_S | RE_VV; 7480 break; 7481 case 'c': 7482 re->options |= RE_C; 7483 break; 7484 case 'D': 7485 re->options |= RE_DD; 7486 break; 7487 case 'd': 7488 re->options |= RE_D; 7489 break; 7490 case 'e': 7491 re->options |= RE_H | RE_L | RE_SS; 7492 break; 7493 case 'g': 7494 re->options |= RE_G; 7495 break; 7496 case 'H': 7497 readelf_usage(EXIT_SUCCESS); 7498 break; 7499 case 'h': 7500 re->options |= RE_H; 7501 break; 7502 case 'I': 7503 re->options |= RE_II; 7504 break; 7505 case 'i': 7506 /* Not implemented yet. */ 7507 break; 7508 case 'l': 7509 re->options |= RE_L; 7510 break; 7511 case 'N': 7512 re->options |= RE_NN; 7513 break; 7514 case 'n': 7515 re->options |= RE_N; 7516 break; 7517 case 'p': 7518 re->options |= RE_P; 7519 si = strtoul(optarg, &ep, 10); 7520 if (*ep == '\0') 7521 add_dumpop(re, (size_t) si, NULL, STR_DUMP, 7522 DUMP_BY_INDEX); 7523 else 7524 add_dumpop(re, 0, optarg, STR_DUMP, 7525 DUMP_BY_NAME); 7526 break; 7527 case 'r': 7528 re->options |= RE_R; 7529 break; 7530 case 'S': 7531 re->options |= RE_SS; 7532 break; 7533 case 's': 7534 re->options |= RE_S; 7535 break; 7536 case 't': 7537 re->options |= RE_SS | RE_T; 7538 break; 7539 case 'u': 7540 re->options |= RE_U; 7541 break; 7542 case 'V': 7543 re->options |= RE_VV; 7544 break; 7545 case 'v': 7546 readelf_version(); 7547 break; 7548 case 'W': 7549 re->options |= RE_WW; 7550 break; 7551 case 'w': 7552 re->options |= RE_W; 7553 parse_dwarf_op_short(re, optarg); 7554 break; 7555 case 'x': 7556 re->options |= RE_X; 7557 si = strtoul(optarg, &ep, 10); 7558 if (*ep == '\0') 7559 add_dumpop(re, (size_t) si, NULL, HEX_DUMP, 7560 DUMP_BY_INDEX); 7561 else 7562 add_dumpop(re, 0, optarg, HEX_DUMP, 7563 DUMP_BY_NAME); 7564 break; 7565 case OPTION_DEBUG_DUMP: 7566 re->options |= RE_W; 7567 parse_dwarf_op_long(re, optarg); 7568 } 7569 } 7570 7571 argv += optind; 7572 argc -= optind; 7573 7574 if (argc == 0 || re->options == 0) 7575 readelf_usage(EXIT_FAILURE); 7576 7577 if (argc > 1) 7578 re->flags |= DISPLAY_FILENAME; 7579 7580 if (elf_version(EV_CURRENT) == EV_NONE) 7581 errx(EXIT_FAILURE, "ELF library initialization failed: %s", 7582 elf_errmsg(-1)); 7583 7584 for (i = 0; i < argc; i++) { 7585 re->filename = argv[i]; 7586 dump_object(re); 7587 } 7588 7589 exit(EXIT_SUCCESS); 7590 } 7591