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 3519 2017-04-09 23:15:58Z kaiwang27 $"); 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 static void add_dumpop(struct readelf *re, size_t si, const char *sn, int op, 224 int t); 225 static const char *aeabi_adv_simd_arch(uint64_t simd); 226 static const char *aeabi_align_needed(uint64_t an); 227 static const char *aeabi_align_preserved(uint64_t ap); 228 static const char *aeabi_arm_isa(uint64_t ai); 229 static const char *aeabi_cpu_arch(uint64_t arch); 230 static const char *aeabi_cpu_arch_profile(uint64_t pf); 231 static const char *aeabi_div(uint64_t du); 232 static const char *aeabi_enum_size(uint64_t es); 233 static const char *aeabi_fp_16bit_format(uint64_t fp16); 234 static const char *aeabi_fp_arch(uint64_t fp); 235 static const char *aeabi_fp_denormal(uint64_t fd); 236 static const char *aeabi_fp_exceptions(uint64_t fe); 237 static const char *aeabi_fp_hpext(uint64_t fh); 238 static const char *aeabi_fp_number_model(uint64_t fn); 239 static const char *aeabi_fp_optm_goal(uint64_t fog); 240 static const char *aeabi_fp_rounding(uint64_t fr); 241 static const char *aeabi_hardfp(uint64_t hfp); 242 static const char *aeabi_mpext(uint64_t mp); 243 static const char *aeabi_optm_goal(uint64_t og); 244 static const char *aeabi_pcs_config(uint64_t pcs); 245 static const char *aeabi_pcs_got(uint64_t got); 246 static const char *aeabi_pcs_r9(uint64_t r9); 247 static const char *aeabi_pcs_ro(uint64_t ro); 248 static const char *aeabi_pcs_rw(uint64_t rw); 249 static const char *aeabi_pcs_wchar_t(uint64_t wt); 250 static const char *aeabi_t2ee(uint64_t t2ee); 251 static const char *aeabi_thumb_isa(uint64_t ti); 252 static const char *aeabi_fp_user_exceptions(uint64_t fu); 253 static const char *aeabi_unaligned_access(uint64_t ua); 254 static const char *aeabi_vfp_args(uint64_t va); 255 static const char *aeabi_virtual(uint64_t vt); 256 static const char *aeabi_wmmx_arch(uint64_t wmmx); 257 static const char *aeabi_wmmx_args(uint64_t wa); 258 static const char *elf_class(unsigned int class); 259 static const char *elf_endian(unsigned int endian); 260 static const char *elf_machine(unsigned int mach); 261 static const char *elf_osabi(unsigned int abi); 262 static const char *elf_type(unsigned int type); 263 static const char *elf_ver(unsigned int ver); 264 static const char *dt_type(unsigned int mach, unsigned int dtype); 265 static void dump_ar(struct readelf *re, int); 266 static void dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 267 static void dump_attributes(struct readelf *re); 268 static uint8_t *dump_compatibility_tag(uint8_t *p, uint8_t *pe); 269 static void dump_dwarf(struct readelf *re); 270 static void dump_dwarf_abbrev(struct readelf *re); 271 static void dump_dwarf_aranges(struct readelf *re); 272 static void dump_dwarf_block(struct readelf *re, uint8_t *b, 273 Dwarf_Unsigned len); 274 static void dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level); 275 static void dump_dwarf_frame(struct readelf *re, int alt); 276 static void dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, 277 uint8_t *insts, Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, 278 Dwarf_Addr pc, Dwarf_Debug dbg); 279 static int dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, 280 Dwarf_Addr pc, Dwarf_Unsigned func_len, Dwarf_Half cie_ra); 281 static void dump_dwarf_frame_section(struct readelf *re, struct section *s, 282 int alt); 283 static void dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info); 284 static void dump_dwarf_macinfo(struct readelf *re); 285 static void dump_dwarf_line(struct readelf *re); 286 static void dump_dwarf_line_decoded(struct readelf *re); 287 static void dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr); 288 static void dump_dwarf_loclist(struct readelf *re); 289 static void dump_dwarf_pubnames(struct readelf *re); 290 static void dump_dwarf_ranges(struct readelf *re); 291 static void dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, 292 Dwarf_Addr base); 293 static void dump_dwarf_str(struct readelf *re); 294 static void dump_eflags(struct readelf *re, uint64_t e_flags); 295 static void dump_elf(struct readelf *re); 296 static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab); 297 static void dump_dynamic(struct readelf *re); 298 static void dump_liblist(struct readelf *re); 299 static void dump_mips_abiflags(struct readelf *re, struct section *s); 300 static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 301 static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz); 302 static void dump_mips_options(struct readelf *re, struct section *s); 303 static void dump_mips_option_flags(const char *name, struct mips_option *opt, 304 uint64_t info); 305 static void dump_mips_reginfo(struct readelf *re, struct section *s); 306 static void dump_mips_specific_info(struct readelf *re); 307 static void dump_notes(struct readelf *re); 308 static void dump_notes_content(struct readelf *re, const char *buf, size_t sz, 309 off_t off); 310 static void dump_svr4_hash(struct section *s); 311 static void dump_svr4_hash64(struct readelf *re, struct section *s); 312 static void dump_gnu_hash(struct readelf *re, struct section *s); 313 static void dump_hash(struct readelf *re); 314 static void dump_phdr(struct readelf *re); 315 static void dump_ppc_attributes(uint8_t *p, uint8_t *pe); 316 static void dump_section_groups(struct readelf *re); 317 static void dump_symtab(struct readelf *re, int i); 318 static void dump_symtabs(struct readelf *re); 319 static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe); 320 static void dump_ver(struct readelf *re); 321 static void dump_verdef(struct readelf *re, int dump); 322 static void dump_verneed(struct readelf *re, int dump); 323 static void dump_versym(struct readelf *re); 324 static const char *dwarf_reg(unsigned int mach, unsigned int reg); 325 static const char *dwarf_regname(struct readelf *re, unsigned int num); 326 static struct dumpop *find_dumpop(struct readelf *re, size_t si, 327 const char *sn, int op, int t); 328 static int get_ent_count(struct section *s, int *ent_count); 329 static int get_mips_register_size(uint8_t flag); 330 static char *get_regoff_str(struct readelf *re, Dwarf_Half reg, 331 Dwarf_Addr off); 332 static const char *get_string(struct readelf *re, int strtab, size_t off); 333 static const char *get_symbol_name(struct readelf *re, int symtab, int i); 334 static uint64_t get_symbol_value(struct readelf *re, int symtab, int i); 335 static void load_sections(struct readelf *re); 336 static const char *mips_abi_fp(uint64_t fp); 337 static const char *note_type(const char *note_name, unsigned int et, 338 unsigned int nt); 339 static const char *note_type_freebsd(unsigned int nt); 340 static const char *note_type_freebsd_core(unsigned int nt); 341 static const char *note_type_linux_core(unsigned int nt); 342 static const char *note_type_gnu(unsigned int nt); 343 static const char *note_type_netbsd(unsigned int nt); 344 static const char *note_type_openbsd(unsigned int nt); 345 static const char *note_type_unknown(unsigned int nt); 346 static const char *note_type_xen(unsigned int nt); 347 static const char *option_kind(uint8_t kind); 348 static const char *phdr_type(unsigned int mach, unsigned int ptype); 349 static const char *ppc_abi_fp(uint64_t fp); 350 static const char *ppc_abi_vector(uint64_t vec); 351 static void readelf_usage(int status); 352 static void readelf_version(void); 353 static void search_loclist_at(struct readelf *re, Dwarf_Die die, 354 Dwarf_Unsigned lowpc); 355 static void search_ver(struct readelf *re); 356 static const char *section_type(unsigned int mach, unsigned int stype); 357 static void set_cu_context(struct readelf *re, Dwarf_Half psize, 358 Dwarf_Half osize, Dwarf_Half ver); 359 static const char *st_bind(unsigned int sbind); 360 static const char *st_shndx(unsigned int shndx); 361 static const char *st_type(unsigned int mach, unsigned int os, 362 unsigned int stype); 363 static const char *st_vis(unsigned int svis); 364 static const char *top_tag(unsigned int tag); 365 static void unload_sections(struct readelf *re); 366 static uint64_t _read_lsb(Elf_Data *d, uint64_t *offsetp, 367 int bytes_to_read); 368 static uint64_t _read_msb(Elf_Data *d, uint64_t *offsetp, 369 int bytes_to_read); 370 static uint64_t _decode_lsb(uint8_t **data, int bytes_to_read); 371 static uint64_t _decode_msb(uint8_t **data, int bytes_to_read); 372 static int64_t _decode_sleb128(uint8_t **dp, uint8_t *dpe); 373 static uint64_t _decode_uleb128(uint8_t **dp, uint8_t *dpe); 374 375 static struct eflags_desc arm_eflags_desc[] = { 376 {EF_ARM_RELEXEC, "relocatable executable"}, 377 {EF_ARM_HASENTRY, "has entry point"}, 378 {EF_ARM_SYMSARESORTED, "sorted symbol tables"}, 379 {EF_ARM_DYNSYMSUSESEGIDX, "dynamic symbols use segment index"}, 380 {EF_ARM_MAPSYMSFIRST, "mapping symbols precede others"}, 381 {EF_ARM_BE8, "BE8"}, 382 {EF_ARM_LE8, "LE8"}, 383 {EF_ARM_INTERWORK, "interworking enabled"}, 384 {EF_ARM_APCS_26, "uses APCS/26"}, 385 {EF_ARM_APCS_FLOAT, "uses APCS/float"}, 386 {EF_ARM_PIC, "position independent"}, 387 {EF_ARM_ALIGN8, "8 bit structure alignment"}, 388 {EF_ARM_NEW_ABI, "uses new ABI"}, 389 {EF_ARM_OLD_ABI, "uses old ABI"}, 390 {EF_ARM_SOFT_FLOAT, "software FP"}, 391 {EF_ARM_VFP_FLOAT, "VFP"}, 392 {EF_ARM_MAVERICK_FLOAT, "Maverick FP"}, 393 {0, NULL} 394 }; 395 396 static struct eflags_desc mips_eflags_desc[] = { 397 {EF_MIPS_NOREORDER, "noreorder"}, 398 {EF_MIPS_PIC, "pic"}, 399 {EF_MIPS_CPIC, "cpic"}, 400 {EF_MIPS_UCODE, "ugen_reserved"}, 401 {EF_MIPS_ABI2, "abi2"}, 402 {EF_MIPS_OPTIONS_FIRST, "odk first"}, 403 {EF_MIPS_ARCH_ASE_MDMX, "mdmx"}, 404 {EF_MIPS_ARCH_ASE_M16, "mips16"}, 405 {0, NULL} 406 }; 407 408 static struct eflags_desc powerpc_eflags_desc[] = { 409 {EF_PPC_EMB, "emb"}, 410 {EF_PPC_RELOCATABLE, "relocatable"}, 411 {EF_PPC_RELOCATABLE_LIB, "relocatable-lib"}, 412 {0, NULL} 413 }; 414 415 static struct eflags_desc sparc_eflags_desc[] = { 416 {EF_SPARC_32PLUS, "v8+"}, 417 {EF_SPARC_SUN_US1, "ultrasparcI"}, 418 {EF_SPARC_HAL_R1, "halr1"}, 419 {EF_SPARC_SUN_US3, "ultrasparcIII"}, 420 {0, NULL} 421 }; 422 423 static const char * 424 elf_osabi(unsigned int abi) 425 { 426 static char s_abi[32]; 427 428 switch(abi) { 429 case ELFOSABI_NONE: return "NONE"; 430 case ELFOSABI_HPUX: return "HPUX"; 431 case ELFOSABI_NETBSD: return "NetBSD"; 432 case ELFOSABI_GNU: return "GNU"; 433 case ELFOSABI_HURD: return "HURD"; 434 case ELFOSABI_86OPEN: return "86OPEN"; 435 case ELFOSABI_SOLARIS: return "Solaris"; 436 case ELFOSABI_AIX: return "AIX"; 437 case ELFOSABI_IRIX: return "IRIX"; 438 case ELFOSABI_FREEBSD: return "FreeBSD"; 439 case ELFOSABI_TRU64: return "TRU64"; 440 case ELFOSABI_MODESTO: return "MODESTO"; 441 case ELFOSABI_OPENBSD: return "OpenBSD"; 442 case ELFOSABI_OPENVMS: return "OpenVMS"; 443 case ELFOSABI_NSK: return "NSK"; 444 case ELFOSABI_CLOUDABI: return "CloudABI"; 445 case ELFOSABI_ARM_AEABI: return "ARM EABI"; 446 case ELFOSABI_ARM: return "ARM"; 447 case ELFOSABI_STANDALONE: return "StandAlone"; 448 default: 449 snprintf(s_abi, sizeof(s_abi), "<unknown: %#x>", abi); 450 return (s_abi); 451 } 452 }; 453 454 static const char * 455 elf_machine(unsigned int mach) 456 { 457 static char s_mach[32]; 458 459 switch (mach) { 460 case EM_NONE: return "Unknown machine"; 461 case EM_M32: return "AT&T WE32100"; 462 case EM_SPARC: return "Sun SPARC"; 463 case EM_386: return "Intel i386"; 464 case EM_68K: return "Motorola 68000"; 465 case EM_IAMCU: return "Intel MCU"; 466 case EM_88K: return "Motorola 88000"; 467 case EM_860: return "Intel i860"; 468 case EM_MIPS: return "MIPS R3000 Big-Endian only"; 469 case EM_S370: return "IBM System/370"; 470 case EM_MIPS_RS3_LE: return "MIPS R3000 Little-Endian"; 471 case EM_PARISC: return "HP PA-RISC"; 472 case EM_VPP500: return "Fujitsu VPP500"; 473 case EM_SPARC32PLUS: return "SPARC v8plus"; 474 case EM_960: return "Intel 80960"; 475 case EM_PPC: return "PowerPC 32-bit"; 476 case EM_PPC64: return "PowerPC 64-bit"; 477 case EM_S390: return "IBM System/390"; 478 case EM_V800: return "NEC V800"; 479 case EM_FR20: return "Fujitsu FR20"; 480 case EM_RH32: return "TRW RH-32"; 481 case EM_RCE: return "Motorola RCE"; 482 case EM_ARM: return "ARM"; 483 case EM_SH: return "Hitachi SH"; 484 case EM_SPARCV9: return "SPARC v9 64-bit"; 485 case EM_TRICORE: return "Siemens TriCore embedded processor"; 486 case EM_ARC: return "Argonaut RISC Core"; 487 case EM_H8_300: return "Hitachi H8/300"; 488 case EM_H8_300H: return "Hitachi H8/300H"; 489 case EM_H8S: return "Hitachi H8S"; 490 case EM_H8_500: return "Hitachi H8/500"; 491 case EM_IA_64: return "Intel IA-64 Processor"; 492 case EM_MIPS_X: return "Stanford MIPS-X"; 493 case EM_COLDFIRE: return "Motorola ColdFire"; 494 case EM_68HC12: return "Motorola M68HC12"; 495 case EM_MMA: return "Fujitsu MMA"; 496 case EM_PCP: return "Siemens PCP"; 497 case EM_NCPU: return "Sony nCPU"; 498 case EM_NDR1: return "Denso NDR1 microprocessor"; 499 case EM_STARCORE: return "Motorola Star*Core processor"; 500 case EM_ME16: return "Toyota ME16 processor"; 501 case EM_ST100: return "STMicroelectronics ST100 processor"; 502 case EM_TINYJ: return "Advanced Logic Corp. TinyJ processor"; 503 case EM_X86_64: return "Advanced Micro Devices x86-64"; 504 case EM_PDSP: return "Sony DSP Processor"; 505 case EM_FX66: return "Siemens FX66 microcontroller"; 506 case EM_ST9PLUS: return "STMicroelectronics ST9+ 8/16 microcontroller"; 507 case EM_ST7: return "STmicroelectronics ST7 8-bit microcontroller"; 508 case EM_68HC16: return "Motorola MC68HC16 microcontroller"; 509 case EM_68HC11: return "Motorola MC68HC11 microcontroller"; 510 case EM_68HC08: return "Motorola MC68HC08 microcontroller"; 511 case EM_68HC05: return "Motorola MC68HC05 microcontroller"; 512 case EM_SVX: return "Silicon Graphics SVx"; 513 case EM_ST19: return "STMicroelectronics ST19 8-bit mc"; 514 case EM_VAX: return "Digital VAX"; 515 case EM_CRIS: return "Axis Communications 32-bit embedded processor"; 516 case EM_JAVELIN: return "Infineon Tech. 32bit embedded processor"; 517 case EM_FIREPATH: return "Element 14 64-bit DSP Processor"; 518 case EM_ZSP: return "LSI Logic 16-bit DSP Processor"; 519 case EM_MMIX: return "Donald Knuth's educational 64-bit proc"; 520 case EM_HUANY: return "Harvard University MI object files"; 521 case EM_PRISM: return "SiTera Prism"; 522 case EM_AVR: return "Atmel AVR 8-bit microcontroller"; 523 case EM_FR30: return "Fujitsu FR30"; 524 case EM_D10V: return "Mitsubishi D10V"; 525 case EM_D30V: return "Mitsubishi D30V"; 526 case EM_V850: return "NEC v850"; 527 case EM_M32R: return "Mitsubishi M32R"; 528 case EM_MN10300: return "Matsushita MN10300"; 529 case EM_MN10200: return "Matsushita MN10200"; 530 case EM_PJ: return "picoJava"; 531 case EM_OPENRISC: return "OpenRISC 32-bit embedded processor"; 532 case EM_ARC_A5: return "ARC Cores Tangent-A5"; 533 case EM_XTENSA: return "Tensilica Xtensa Architecture"; 534 case EM_VIDEOCORE: return "Alphamosaic VideoCore processor"; 535 case EM_TMM_GPP: return "Thompson Multimedia General Purpose Processor"; 536 case EM_NS32K: return "National Semiconductor 32000 series"; 537 case EM_TPC: return "Tenor Network TPC processor"; 538 case EM_SNP1K: return "Trebia SNP 1000 processor"; 539 case EM_ST200: return "STMicroelectronics ST200 microcontroller"; 540 case EM_IP2K: return "Ubicom IP2xxx microcontroller family"; 541 case EM_MAX: return "MAX Processor"; 542 case EM_CR: return "National Semiconductor CompactRISC microprocessor"; 543 case EM_F2MC16: return "Fujitsu F2MC16"; 544 case EM_MSP430: return "TI embedded microcontroller msp430"; 545 case EM_BLACKFIN: return "Analog Devices Blackfin (DSP) processor"; 546 case EM_SE_C33: return "S1C33 Family of Seiko Epson processors"; 547 case EM_SEP: return "Sharp embedded microprocessor"; 548 case EM_ARCA: return "Arca RISC Microprocessor"; 549 case EM_UNICORE: return "Microprocessor series from PKU-Unity Ltd"; 550 case EM_AARCH64: return "AArch64"; 551 case EM_RISCV: return "RISC-V"; 552 default: 553 snprintf(s_mach, sizeof(s_mach), "<unknown: %#x>", mach); 554 return (s_mach); 555 } 556 557 } 558 559 static const char * 560 elf_class(unsigned int class) 561 { 562 static char s_class[32]; 563 564 switch (class) { 565 case ELFCLASSNONE: return "none"; 566 case ELFCLASS32: return "ELF32"; 567 case ELFCLASS64: return "ELF64"; 568 default: 569 snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class); 570 return (s_class); 571 } 572 } 573 574 static const char * 575 elf_endian(unsigned int endian) 576 { 577 static char s_endian[32]; 578 579 switch (endian) { 580 case ELFDATANONE: return "none"; 581 case ELFDATA2LSB: return "2's complement, little endian"; 582 case ELFDATA2MSB: return "2's complement, big endian"; 583 default: 584 snprintf(s_endian, sizeof(s_endian), "<unknown: %#x>", endian); 585 return (s_endian); 586 } 587 } 588 589 static const char * 590 elf_type(unsigned int type) 591 { 592 static char s_type[32]; 593 594 switch (type) { 595 case ET_NONE: return "NONE (None)"; 596 case ET_REL: return "REL (Relocatable file)"; 597 case ET_EXEC: return "EXEC (Executable file)"; 598 case ET_DYN: return "DYN (Shared object file)"; 599 case ET_CORE: return "CORE (Core file)"; 600 default: 601 if (type >= ET_LOPROC) 602 snprintf(s_type, sizeof(s_type), "<proc: %#x>", type); 603 else if (type >= ET_LOOS && type <= ET_HIOS) 604 snprintf(s_type, sizeof(s_type), "<os: %#x>", type); 605 else 606 snprintf(s_type, sizeof(s_type), "<unknown: %#x>", 607 type); 608 return (s_type); 609 } 610 } 611 612 static const char * 613 elf_ver(unsigned int ver) 614 { 615 static char s_ver[32]; 616 617 switch (ver) { 618 case EV_CURRENT: return "(current)"; 619 case EV_NONE: return "(none)"; 620 default: 621 snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>", 622 ver); 623 return (s_ver); 624 } 625 } 626 627 static const char * 628 phdr_type(unsigned int mach, unsigned int ptype) 629 { 630 static char s_ptype[32]; 631 632 if (ptype >= PT_LOPROC && ptype <= PT_HIPROC) { 633 switch (mach) { 634 case EM_ARM: 635 switch (ptype) { 636 case PT_ARM_ARCHEXT: return "ARM_ARCHEXT"; 637 case PT_ARM_EXIDX: return "ARM_EXIDX"; 638 } 639 break; 640 } 641 snprintf(s_ptype, sizeof(s_ptype), "LOPROC+%#x", 642 ptype - PT_LOPROC); 643 return (s_ptype); 644 } 645 646 switch (ptype) { 647 case PT_NULL: return "NULL"; 648 case PT_LOAD: return "LOAD"; 649 case PT_DYNAMIC: return "DYNAMIC"; 650 case PT_INTERP: return "INTERP"; 651 case PT_NOTE: return "NOTE"; 652 case PT_SHLIB: return "SHLIB"; 653 case PT_PHDR: return "PHDR"; 654 case PT_TLS: return "TLS"; 655 case PT_GNU_EH_FRAME: return "GNU_EH_FRAME"; 656 case PT_GNU_STACK: return "GNU_STACK"; 657 case PT_GNU_RELRO: return "GNU_RELRO"; 658 default: 659 if (ptype >= PT_LOOS && ptype <= PT_HIOS) 660 snprintf(s_ptype, sizeof(s_ptype), "LOOS+%#x", 661 ptype - PT_LOOS); 662 else 663 snprintf(s_ptype, sizeof(s_ptype), "<unknown: %#x>", 664 ptype); 665 return (s_ptype); 666 } 667 } 668 669 static const char * 670 section_type(unsigned int mach, unsigned int stype) 671 { 672 static char s_stype[32]; 673 674 if (stype >= SHT_LOPROC && stype <= SHT_HIPROC) { 675 switch (mach) { 676 case EM_ARM: 677 switch (stype) { 678 case SHT_ARM_EXIDX: return "ARM_EXIDX"; 679 case SHT_ARM_PREEMPTMAP: return "ARM_PREEMPTMAP"; 680 case SHT_ARM_ATTRIBUTES: return "ARM_ATTRIBUTES"; 681 case SHT_ARM_DEBUGOVERLAY: return "ARM_DEBUGOVERLAY"; 682 case SHT_ARM_OVERLAYSECTION: return "ARM_OVERLAYSECTION"; 683 } 684 break; 685 case EM_X86_64: 686 switch (stype) { 687 case SHT_X86_64_UNWIND: return "X86_64_UNWIND"; 688 default: 689 break; 690 } 691 break; 692 case EM_MIPS: 693 case EM_MIPS_RS3_LE: 694 switch (stype) { 695 case SHT_MIPS_LIBLIST: return "MIPS_LIBLIST"; 696 case SHT_MIPS_MSYM: return "MIPS_MSYM"; 697 case SHT_MIPS_CONFLICT: return "MIPS_CONFLICT"; 698 case SHT_MIPS_GPTAB: return "MIPS_GPTAB"; 699 case SHT_MIPS_UCODE: return "MIPS_UCODE"; 700 case SHT_MIPS_DEBUG: return "MIPS_DEBUG"; 701 case SHT_MIPS_REGINFO: return "MIPS_REGINFO"; 702 case SHT_MIPS_PACKAGE: return "MIPS_PACKAGE"; 703 case SHT_MIPS_PACKSYM: return "MIPS_PACKSYM"; 704 case SHT_MIPS_RELD: return "MIPS_RELD"; 705 case SHT_MIPS_IFACE: return "MIPS_IFACE"; 706 case SHT_MIPS_CONTENT: return "MIPS_CONTENT"; 707 case SHT_MIPS_OPTIONS: return "MIPS_OPTIONS"; 708 case SHT_MIPS_DELTASYM: return "MIPS_DELTASYM"; 709 case SHT_MIPS_DELTAINST: return "MIPS_DELTAINST"; 710 case SHT_MIPS_DELTACLASS: return "MIPS_DELTACLASS"; 711 case SHT_MIPS_DWARF: return "MIPS_DWARF"; 712 case SHT_MIPS_DELTADECL: return "MIPS_DELTADECL"; 713 case SHT_MIPS_SYMBOL_LIB: return "MIPS_SYMBOL_LIB"; 714 case SHT_MIPS_EVENTS: return "MIPS_EVENTS"; 715 case SHT_MIPS_TRANSLATE: return "MIPS_TRANSLATE"; 716 case SHT_MIPS_PIXIE: return "MIPS_PIXIE"; 717 case SHT_MIPS_XLATE: return "MIPS_XLATE"; 718 case SHT_MIPS_XLATE_DEBUG: return "MIPS_XLATE_DEBUG"; 719 case SHT_MIPS_WHIRL: return "MIPS_WHIRL"; 720 case SHT_MIPS_EH_REGION: return "MIPS_EH_REGION"; 721 case SHT_MIPS_XLATE_OLD: return "MIPS_XLATE_OLD"; 722 case SHT_MIPS_PDR_EXCEPTION: return "MIPS_PDR_EXCEPTION"; 723 case SHT_MIPS_ABIFLAGS: return "MIPS_ABIFLAGS"; 724 default: 725 break; 726 } 727 break; 728 default: 729 break; 730 } 731 732 snprintf(s_stype, sizeof(s_stype), "LOPROC+%#x", 733 stype - SHT_LOPROC); 734 return (s_stype); 735 } 736 737 switch (stype) { 738 case SHT_NULL: return "NULL"; 739 case SHT_PROGBITS: return "PROGBITS"; 740 case SHT_SYMTAB: return "SYMTAB"; 741 case SHT_STRTAB: return "STRTAB"; 742 case SHT_RELA: return "RELA"; 743 case SHT_HASH: return "HASH"; 744 case SHT_DYNAMIC: return "DYNAMIC"; 745 case SHT_NOTE: return "NOTE"; 746 case SHT_NOBITS: return "NOBITS"; 747 case SHT_REL: return "REL"; 748 case SHT_SHLIB: return "SHLIB"; 749 case SHT_DYNSYM: return "DYNSYM"; 750 case SHT_INIT_ARRAY: return "INIT_ARRAY"; 751 case SHT_FINI_ARRAY: return "FINI_ARRAY"; 752 case SHT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 753 case SHT_GROUP: return "GROUP"; 754 case SHT_SYMTAB_SHNDX: return "SYMTAB_SHNDX"; 755 case SHT_SUNW_dof: return "SUNW_dof"; 756 case SHT_SUNW_cap: return "SUNW_cap"; 757 case SHT_GNU_HASH: return "GNU_HASH"; 758 case SHT_SUNW_ANNOTATE: return "SUNW_ANNOTATE"; 759 case SHT_SUNW_DEBUGSTR: return "SUNW_DEBUGSTR"; 760 case SHT_SUNW_DEBUG: return "SUNW_DEBUG"; 761 case SHT_SUNW_move: return "SUNW_move"; 762 case SHT_SUNW_COMDAT: return "SUNW_COMDAT"; 763 case SHT_SUNW_syminfo: return "SUNW_syminfo"; 764 case SHT_SUNW_verdef: return "SUNW_verdef"; 765 case SHT_SUNW_verneed: return "SUNW_verneed"; 766 case SHT_SUNW_versym: return "SUNW_versym"; 767 default: 768 if (stype >= SHT_LOOS && stype <= SHT_HIOS) 769 snprintf(s_stype, sizeof(s_stype), "LOOS+%#x", 770 stype - SHT_LOOS); 771 else if (stype >= SHT_LOUSER) 772 snprintf(s_stype, sizeof(s_stype), "LOUSER+%#x", 773 stype - SHT_LOUSER); 774 else 775 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 776 stype); 777 return (s_stype); 778 } 779 } 780 781 static const char * 782 dt_type(unsigned int mach, unsigned int dtype) 783 { 784 static char s_dtype[32]; 785 786 switch (dtype) { 787 case DT_NULL: return "NULL"; 788 case DT_NEEDED: return "NEEDED"; 789 case DT_PLTRELSZ: return "PLTRELSZ"; 790 case DT_PLTGOT: return "PLTGOT"; 791 case DT_HASH: return "HASH"; 792 case DT_STRTAB: return "STRTAB"; 793 case DT_SYMTAB: return "SYMTAB"; 794 case DT_RELA: return "RELA"; 795 case DT_RELASZ: return "RELASZ"; 796 case DT_RELAENT: return "RELAENT"; 797 case DT_STRSZ: return "STRSZ"; 798 case DT_SYMENT: return "SYMENT"; 799 case DT_INIT: return "INIT"; 800 case DT_FINI: return "FINI"; 801 case DT_SONAME: return "SONAME"; 802 case DT_RPATH: return "RPATH"; 803 case DT_SYMBOLIC: return "SYMBOLIC"; 804 case DT_REL: return "REL"; 805 case DT_RELSZ: return "RELSZ"; 806 case DT_RELENT: return "RELENT"; 807 case DT_PLTREL: return "PLTREL"; 808 case DT_DEBUG: return "DEBUG"; 809 case DT_TEXTREL: return "TEXTREL"; 810 case DT_JMPREL: return "JMPREL"; 811 case DT_BIND_NOW: return "BIND_NOW"; 812 case DT_INIT_ARRAY: return "INIT_ARRAY"; 813 case DT_FINI_ARRAY: return "FINI_ARRAY"; 814 case DT_INIT_ARRAYSZ: return "INIT_ARRAYSZ"; 815 case DT_FINI_ARRAYSZ: return "FINI_ARRAYSZ"; 816 case DT_RUNPATH: return "RUNPATH"; 817 case DT_FLAGS: return "FLAGS"; 818 case DT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 819 case DT_PREINIT_ARRAYSZ: return "PREINIT_ARRAYSZ"; 820 case DT_MAXPOSTAGS: return "MAXPOSTAGS"; 821 case DT_SUNW_AUXILIARY: return "SUNW_AUXILIARY"; 822 case DT_SUNW_RTLDINF: return "SUNW_RTLDINF"; 823 case DT_SUNW_FILTER: return "SUNW_FILTER"; 824 case DT_SUNW_CAP: return "SUNW_CAP"; 825 case DT_CHECKSUM: return "CHECKSUM"; 826 case DT_PLTPADSZ: return "PLTPADSZ"; 827 case DT_MOVEENT: return "MOVEENT"; 828 case DT_MOVESZ: return "MOVESZ"; 829 case DT_FEATURE: return "FEATURE"; 830 case DT_POSFLAG_1: return "POSFLAG_1"; 831 case DT_SYMINSZ: return "SYMINSZ"; 832 case DT_SYMINENT: return "SYMINENT"; 833 case DT_GNU_HASH: return "GNU_HASH"; 834 case DT_TLSDESC_PLT: return "DT_TLSDESC_PLT"; 835 case DT_TLSDESC_GOT: return "DT_TLSDESC_GOT"; 836 case DT_GNU_CONFLICT: return "GNU_CONFLICT"; 837 case DT_GNU_LIBLIST: return "GNU_LIBLIST"; 838 case DT_CONFIG: return "CONFIG"; 839 case DT_DEPAUDIT: return "DEPAUDIT"; 840 case DT_AUDIT: return "AUDIT"; 841 case DT_PLTPAD: return "PLTPAD"; 842 case DT_MOVETAB: return "MOVETAB"; 843 case DT_SYMINFO: return "SYMINFO"; 844 case DT_VERSYM: return "VERSYM"; 845 case DT_RELACOUNT: return "RELACOUNT"; 846 case DT_RELCOUNT: return "RELCOUNT"; 847 case DT_FLAGS_1: return "FLAGS_1"; 848 case DT_VERDEF: return "VERDEF"; 849 case DT_VERDEFNUM: return "VERDEFNUM"; 850 case DT_VERNEED: return "VERNEED"; 851 case DT_VERNEEDNUM: return "VERNEEDNUM"; 852 case DT_AUXILIARY: return "AUXILIARY"; 853 case DT_USED: return "USED"; 854 case DT_FILTER: return "FILTER"; 855 case DT_GNU_PRELINKED: return "GNU_PRELINKED"; 856 case DT_GNU_CONFLICTSZ: return "GNU_CONFLICTSZ"; 857 case DT_GNU_LIBLISTSZ: return "GNU_LIBLISTSZ"; 858 } 859 860 if (dtype >= DT_LOPROC && dtype <= DT_HIPROC) { 861 switch (mach) { 862 case EM_ARM: 863 switch (dtype) { 864 case DT_ARM_SYMTABSZ: 865 return "ARM_SYMTABSZ"; 866 default: 867 break; 868 } 869 break; 870 case EM_MIPS: 871 case EM_MIPS_RS3_LE: 872 switch (dtype) { 873 case DT_MIPS_RLD_VERSION: 874 return "MIPS_RLD_VERSION"; 875 case DT_MIPS_TIME_STAMP: 876 return "MIPS_TIME_STAMP"; 877 case DT_MIPS_ICHECKSUM: 878 return "MIPS_ICHECKSUM"; 879 case DT_MIPS_IVERSION: 880 return "MIPS_IVERSION"; 881 case DT_MIPS_FLAGS: 882 return "MIPS_FLAGS"; 883 case DT_MIPS_BASE_ADDRESS: 884 return "MIPS_BASE_ADDRESS"; 885 case DT_MIPS_CONFLICT: 886 return "MIPS_CONFLICT"; 887 case DT_MIPS_LIBLIST: 888 return "MIPS_LIBLIST"; 889 case DT_MIPS_LOCAL_GOTNO: 890 return "MIPS_LOCAL_GOTNO"; 891 case DT_MIPS_CONFLICTNO: 892 return "MIPS_CONFLICTNO"; 893 case DT_MIPS_LIBLISTNO: 894 return "MIPS_LIBLISTNO"; 895 case DT_MIPS_SYMTABNO: 896 return "MIPS_SYMTABNO"; 897 case DT_MIPS_UNREFEXTNO: 898 return "MIPS_UNREFEXTNO"; 899 case DT_MIPS_GOTSYM: 900 return "MIPS_GOTSYM"; 901 case DT_MIPS_HIPAGENO: 902 return "MIPS_HIPAGENO"; 903 case DT_MIPS_RLD_MAP: 904 return "MIPS_RLD_MAP"; 905 case DT_MIPS_DELTA_CLASS: 906 return "MIPS_DELTA_CLASS"; 907 case DT_MIPS_DELTA_CLASS_NO: 908 return "MIPS_DELTA_CLASS_NO"; 909 case DT_MIPS_DELTA_INSTANCE: 910 return "MIPS_DELTA_INSTANCE"; 911 case DT_MIPS_DELTA_INSTANCE_NO: 912 return "MIPS_DELTA_INSTANCE_NO"; 913 case DT_MIPS_DELTA_RELOC: 914 return "MIPS_DELTA_RELOC"; 915 case DT_MIPS_DELTA_RELOC_NO: 916 return "MIPS_DELTA_RELOC_NO"; 917 case DT_MIPS_DELTA_SYM: 918 return "MIPS_DELTA_SYM"; 919 case DT_MIPS_DELTA_SYM_NO: 920 return "MIPS_DELTA_SYM_NO"; 921 case DT_MIPS_DELTA_CLASSSYM: 922 return "MIPS_DELTA_CLASSSYM"; 923 case DT_MIPS_DELTA_CLASSSYM_NO: 924 return "MIPS_DELTA_CLASSSYM_NO"; 925 case DT_MIPS_CXX_FLAGS: 926 return "MIPS_CXX_FLAGS"; 927 case DT_MIPS_PIXIE_INIT: 928 return "MIPS_PIXIE_INIT"; 929 case DT_MIPS_SYMBOL_LIB: 930 return "MIPS_SYMBOL_LIB"; 931 case DT_MIPS_LOCALPAGE_GOTIDX: 932 return "MIPS_LOCALPAGE_GOTIDX"; 933 case DT_MIPS_LOCAL_GOTIDX: 934 return "MIPS_LOCAL_GOTIDX"; 935 case DT_MIPS_HIDDEN_GOTIDX: 936 return "MIPS_HIDDEN_GOTIDX"; 937 case DT_MIPS_PROTECTED_GOTIDX: 938 return "MIPS_PROTECTED_GOTIDX"; 939 case DT_MIPS_OPTIONS: 940 return "MIPS_OPTIONS"; 941 case DT_MIPS_INTERFACE: 942 return "MIPS_INTERFACE"; 943 case DT_MIPS_DYNSTR_ALIGN: 944 return "MIPS_DYNSTR_ALIGN"; 945 case DT_MIPS_INTERFACE_SIZE: 946 return "MIPS_INTERFACE_SIZE"; 947 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 948 return "MIPS_RLD_TEXT_RESOLVE_ADDR"; 949 case DT_MIPS_PERF_SUFFIX: 950 return "MIPS_PERF_SUFFIX"; 951 case DT_MIPS_COMPACT_SIZE: 952 return "MIPS_COMPACT_SIZE"; 953 case DT_MIPS_GP_VALUE: 954 return "MIPS_GP_VALUE"; 955 case DT_MIPS_AUX_DYNAMIC: 956 return "MIPS_AUX_DYNAMIC"; 957 case DT_MIPS_PLTGOT: 958 return "MIPS_PLTGOT"; 959 case DT_MIPS_RLD_OBJ_UPDATE: 960 return "MIPS_RLD_OBJ_UPDATE"; 961 case DT_MIPS_RWPLT: 962 return "MIPS_RWPLT"; 963 default: 964 break; 965 } 966 break; 967 case EM_SPARC: 968 case EM_SPARC32PLUS: 969 case EM_SPARCV9: 970 switch (dtype) { 971 case DT_SPARC_REGISTER: 972 return "DT_SPARC_REGISTER"; 973 default: 974 break; 975 } 976 break; 977 default: 978 break; 979 } 980 } 981 982 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype); 983 return (s_dtype); 984 } 985 986 static const char * 987 st_bind(unsigned int sbind) 988 { 989 static char s_sbind[32]; 990 991 switch (sbind) { 992 case STB_LOCAL: return "LOCAL"; 993 case STB_GLOBAL: return "GLOBAL"; 994 case STB_WEAK: return "WEAK"; 995 case STB_GNU_UNIQUE: return "UNIQUE"; 996 default: 997 if (sbind >= STB_LOOS && sbind <= STB_HIOS) 998 return "OS"; 999 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC) 1000 return "PROC"; 1001 else 1002 snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>", 1003 sbind); 1004 return (s_sbind); 1005 } 1006 } 1007 1008 static const char * 1009 st_type(unsigned int mach, unsigned int os, unsigned int stype) 1010 { 1011 static char s_stype[32]; 1012 1013 switch (stype) { 1014 case STT_NOTYPE: return "NOTYPE"; 1015 case STT_OBJECT: return "OBJECT"; 1016 case STT_FUNC: return "FUNC"; 1017 case STT_SECTION: return "SECTION"; 1018 case STT_FILE: return "FILE"; 1019 case STT_COMMON: return "COMMON"; 1020 case STT_TLS: return "TLS"; 1021 default: 1022 if (stype >= STT_LOOS && stype <= STT_HIOS) { 1023 if ((os == ELFOSABI_GNU || os == ELFOSABI_FREEBSD) && 1024 stype == STT_GNU_IFUNC) 1025 return "IFUNC"; 1026 snprintf(s_stype, sizeof(s_stype), "OS+%#x", 1027 stype - STT_LOOS); 1028 } else if (stype >= STT_LOPROC && stype <= STT_HIPROC) { 1029 if (mach == EM_SPARCV9 && stype == STT_SPARC_REGISTER) 1030 return "REGISTER"; 1031 snprintf(s_stype, sizeof(s_stype), "PROC+%#x", 1032 stype - STT_LOPROC); 1033 } else 1034 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 1035 stype); 1036 return (s_stype); 1037 } 1038 } 1039 1040 static const char * 1041 st_vis(unsigned int svis) 1042 { 1043 static char s_svis[32]; 1044 1045 switch(svis) { 1046 case STV_DEFAULT: return "DEFAULT"; 1047 case STV_INTERNAL: return "INTERNAL"; 1048 case STV_HIDDEN: return "HIDDEN"; 1049 case STV_PROTECTED: return "PROTECTED"; 1050 default: 1051 snprintf(s_svis, sizeof(s_svis), "<unknown: %#x>", svis); 1052 return (s_svis); 1053 } 1054 } 1055 1056 static const char * 1057 st_shndx(unsigned int shndx) 1058 { 1059 static char s_shndx[32]; 1060 1061 switch (shndx) { 1062 case SHN_UNDEF: return "UND"; 1063 case SHN_ABS: return "ABS"; 1064 case SHN_COMMON: return "COM"; 1065 default: 1066 if (shndx >= SHN_LOPROC && shndx <= SHN_HIPROC) 1067 return "PRC"; 1068 else if (shndx >= SHN_LOOS && shndx <= SHN_HIOS) 1069 return "OS"; 1070 else 1071 snprintf(s_shndx, sizeof(s_shndx), "%u", shndx); 1072 return (s_shndx); 1073 } 1074 } 1075 1076 static struct { 1077 const char *ln; 1078 char sn; 1079 int value; 1080 } section_flag[] = { 1081 {"WRITE", 'W', SHF_WRITE}, 1082 {"ALLOC", 'A', SHF_ALLOC}, 1083 {"EXEC", 'X', SHF_EXECINSTR}, 1084 {"MERGE", 'M', SHF_MERGE}, 1085 {"STRINGS", 'S', SHF_STRINGS}, 1086 {"INFO LINK", 'I', SHF_INFO_LINK}, 1087 {"OS NONCONF", 'O', SHF_OS_NONCONFORMING}, 1088 {"GROUP", 'G', SHF_GROUP}, 1089 {"TLS", 'T', SHF_TLS}, 1090 {"COMPRESSED", 'C', SHF_COMPRESSED}, 1091 {NULL, 0, 0} 1092 }; 1093 1094 static const char * 1095 note_type(const char *name, unsigned int et, unsigned int nt) 1096 { 1097 if ((strcmp(name, "CORE") == 0 || strcmp(name, "LINUX") == 0) && 1098 et == ET_CORE) 1099 return note_type_linux_core(nt); 1100 else if (strcmp(name, "FreeBSD") == 0) 1101 if (et == ET_CORE) 1102 return note_type_freebsd_core(nt); 1103 else 1104 return note_type_freebsd(nt); 1105 else if (strcmp(name, "GNU") == 0 && et != ET_CORE) 1106 return note_type_gnu(nt); 1107 else if (strcmp(name, "NetBSD") == 0 && et != ET_CORE) 1108 return note_type_netbsd(nt); 1109 else if (strcmp(name, "OpenBSD") == 0 && et != ET_CORE) 1110 return note_type_openbsd(nt); 1111 else if (strcmp(name, "Xen") == 0 && et != ET_CORE) 1112 return note_type_xen(nt); 1113 return note_type_unknown(nt); 1114 } 1115 1116 static const char * 1117 note_type_freebsd(unsigned int nt) 1118 { 1119 switch (nt) { 1120 case 1: return "NT_FREEBSD_ABI_TAG"; 1121 case 2: return "NT_FREEBSD_NOINIT_TAG"; 1122 case 3: return "NT_FREEBSD_ARCH_TAG"; 1123 default: return (note_type_unknown(nt)); 1124 } 1125 } 1126 1127 static const char * 1128 note_type_freebsd_core(unsigned int nt) 1129 { 1130 switch (nt) { 1131 case 1: return "NT_PRSTATUS"; 1132 case 2: return "NT_FPREGSET"; 1133 case 3: return "NT_PRPSINFO"; 1134 case 7: return "NT_THRMISC"; 1135 case 8: return "NT_PROCSTAT_PROC"; 1136 case 9: return "NT_PROCSTAT_FILES"; 1137 case 10: return "NT_PROCSTAT_VMMAP"; 1138 case 11: return "NT_PROCSTAT_GROUPS"; 1139 case 12: return "NT_PROCSTAT_UMASK"; 1140 case 13: return "NT_PROCSTAT_RLIMIT"; 1141 case 14: return "NT_PROCSTAT_OSREL"; 1142 case 15: return "NT_PROCSTAT_PSSTRINGS"; 1143 case 16: return "NT_PROCSTAT_AUXV"; 1144 case 17: return "NT_PTLWPINFO"; 1145 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1146 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1147 default: return (note_type_unknown(nt)); 1148 } 1149 } 1150 1151 static const char * 1152 note_type_linux_core(unsigned int nt) 1153 { 1154 switch (nt) { 1155 case 1: return "NT_PRSTATUS (Process status)"; 1156 case 2: return "NT_FPREGSET (Floating point information)"; 1157 case 3: return "NT_PRPSINFO (Process information)"; 1158 case 4: return "NT_TASKSTRUCT (Task structure)"; 1159 case 6: return "NT_AUXV (Auxiliary vector)"; 1160 case 10: return "NT_PSTATUS (Linux process status)"; 1161 case 12: return "NT_FPREGS (Linux floating point regset)"; 1162 case 13: return "NT_PSINFO (Linux process information)"; 1163 case 16: return "NT_LWPSTATUS (Linux lwpstatus_t type)"; 1164 case 17: return "NT_LWPSINFO (Linux lwpinfo_t type)"; 1165 case 18: return "NT_WIN32PSTATUS (win32_pstatus structure)"; 1166 case 0x100: return "NT_PPC_VMX (ppc Altivec registers)"; 1167 case 0x102: return "NT_PPC_VSX (ppc VSX registers)"; 1168 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1169 case 0x300: return "NT_S390_HIGH_GPRS (s390 upper register halves)"; 1170 case 0x301: return "NT_S390_TIMER (s390 timer register)"; 1171 case 0x302: return "NT_S390_TODCMP (s390 TOD comparator register)"; 1172 case 0x303: return "NT_S390_TODPREG (s390 TOD programmable register)"; 1173 case 0x304: return "NT_S390_CTRS (s390 control registers)"; 1174 case 0x305: return "NT_S390_PREFIX (s390 prefix register)"; 1175 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1176 case 0x46494c45UL: return "NT_FILE (mapped files)"; 1177 case 0x46E62B7FUL: return "NT_PRXFPREG (Linux user_xfpregs structure)"; 1178 case 0x53494749UL: return "NT_SIGINFO (siginfo_t data)"; 1179 default: return (note_type_unknown(nt)); 1180 } 1181 } 1182 1183 static const char * 1184 note_type_gnu(unsigned int nt) 1185 { 1186 switch (nt) { 1187 case 1: return "NT_GNU_ABI_TAG"; 1188 case 2: return "NT_GNU_HWCAP (Hardware capabilities)"; 1189 case 3: return "NT_GNU_BUILD_ID (Build id set by ld(1))"; 1190 case 4: return "NT_GNU_GOLD_VERSION (GNU gold version)"; 1191 default: return (note_type_unknown(nt)); 1192 } 1193 } 1194 1195 static const char * 1196 note_type_netbsd(unsigned int nt) 1197 { 1198 switch (nt) { 1199 case 1: return "NT_NETBSD_IDENT"; 1200 default: return (note_type_unknown(nt)); 1201 } 1202 } 1203 1204 static const char * 1205 note_type_openbsd(unsigned int nt) 1206 { 1207 switch (nt) { 1208 case 1: return "NT_OPENBSD_IDENT"; 1209 default: return (note_type_unknown(nt)); 1210 } 1211 } 1212 1213 static const char * 1214 note_type_unknown(unsigned int nt) 1215 { 1216 static char s_nt[32]; 1217 1218 snprintf(s_nt, sizeof(s_nt), 1219 nt >= 0x100 ? "<unknown: 0x%x>" : "<unknown: %u>", nt); 1220 return (s_nt); 1221 } 1222 1223 static const char * 1224 note_type_xen(unsigned int nt) 1225 { 1226 switch (nt) { 1227 case 0: return "XEN_ELFNOTE_INFO"; 1228 case 1: return "XEN_ELFNOTE_ENTRY"; 1229 case 2: return "XEN_ELFNOTE_HYPERCALL_PAGE"; 1230 case 3: return "XEN_ELFNOTE_VIRT_BASE"; 1231 case 4: return "XEN_ELFNOTE_PADDR_OFFSET"; 1232 case 5: return "XEN_ELFNOTE_XEN_VERSION"; 1233 case 6: return "XEN_ELFNOTE_GUEST_OS"; 1234 case 7: return "XEN_ELFNOTE_GUEST_VERSION"; 1235 case 8: return "XEN_ELFNOTE_LOADER"; 1236 case 9: return "XEN_ELFNOTE_PAE_MODE"; 1237 case 10: return "XEN_ELFNOTE_FEATURES"; 1238 case 11: return "XEN_ELFNOTE_BSD_SYMTAB"; 1239 case 12: return "XEN_ELFNOTE_HV_START_LOW"; 1240 case 13: return "XEN_ELFNOTE_L1_MFN_VALID"; 1241 case 14: return "XEN_ELFNOTE_SUSPEND_CANCEL"; 1242 case 15: return "XEN_ELFNOTE_INIT_P2M"; 1243 case 16: return "XEN_ELFNOTE_MOD_START_PFN"; 1244 case 17: return "XEN_ELFNOTE_SUPPORTED_FEATURES"; 1245 default: return (note_type_unknown(nt)); 1246 } 1247 } 1248 1249 static struct { 1250 const char *name; 1251 int value; 1252 } l_flag[] = { 1253 {"EXACT_MATCH", LL_EXACT_MATCH}, 1254 {"IGNORE_INT_VER", LL_IGNORE_INT_VER}, 1255 {"REQUIRE_MINOR", LL_REQUIRE_MINOR}, 1256 {"EXPORTS", LL_EXPORTS}, 1257 {"DELAY_LOAD", LL_DELAY_LOAD}, 1258 {"DELTA", LL_DELTA}, 1259 {NULL, 0} 1260 }; 1261 1262 static struct mips_option mips_exceptions_option[] = { 1263 {OEX_PAGE0, "PAGE0"}, 1264 {OEX_SMM, "SMM"}, 1265 {OEX_PRECISEFP, "PRECISEFP"}, 1266 {OEX_DISMISS, "DISMISS"}, 1267 {0, NULL} 1268 }; 1269 1270 static struct mips_option mips_pad_option[] = { 1271 {OPAD_PREFIX, "PREFIX"}, 1272 {OPAD_POSTFIX, "POSTFIX"}, 1273 {OPAD_SYMBOL, "SYMBOL"}, 1274 {0, NULL} 1275 }; 1276 1277 static struct mips_option mips_hwpatch_option[] = { 1278 {OHW_R4KEOP, "R4KEOP"}, 1279 {OHW_R8KPFETCH, "R8KPFETCH"}, 1280 {OHW_R5KEOP, "R5KEOP"}, 1281 {OHW_R5KCVTL, "R5KCVTL"}, 1282 {0, NULL} 1283 }; 1284 1285 static struct mips_option mips_hwa_option[] = { 1286 {OHWA0_R4KEOP_CHECKED, "R4KEOP_CHECKED"}, 1287 {OHWA0_R4KEOP_CLEAN, "R4KEOP_CLEAN"}, 1288 {0, NULL} 1289 }; 1290 1291 static struct mips_option mips_hwo_option[] = { 1292 {OHWO0_FIXADE, "FIXADE"}, 1293 {0, NULL} 1294 }; 1295 1296 static const char * 1297 option_kind(uint8_t kind) 1298 { 1299 static char s_kind[32]; 1300 1301 switch (kind) { 1302 case ODK_NULL: return "NULL"; 1303 case ODK_REGINFO: return "REGINFO"; 1304 case ODK_EXCEPTIONS: return "EXCEPTIONS"; 1305 case ODK_PAD: return "PAD"; 1306 case ODK_HWPATCH: return "HWPATCH"; 1307 case ODK_FILL: return "FILL"; 1308 case ODK_TAGS: return "TAGS"; 1309 case ODK_HWAND: return "HWAND"; 1310 case ODK_HWOR: return "HWOR"; 1311 case ODK_GP_GROUP: return "GP_GROUP"; 1312 case ODK_IDENT: return "IDENT"; 1313 default: 1314 snprintf(s_kind, sizeof(s_kind), "<unknown: %u>", kind); 1315 return (s_kind); 1316 } 1317 } 1318 1319 static const char * 1320 top_tag(unsigned int tag) 1321 { 1322 static char s_top_tag[32]; 1323 1324 switch (tag) { 1325 case 1: return "File Attributes"; 1326 case 2: return "Section Attributes"; 1327 case 3: return "Symbol Attributes"; 1328 default: 1329 snprintf(s_top_tag, sizeof(s_top_tag), "Unknown tag: %u", tag); 1330 return (s_top_tag); 1331 } 1332 } 1333 1334 static const char * 1335 aeabi_cpu_arch(uint64_t arch) 1336 { 1337 static char s_cpu_arch[32]; 1338 1339 switch (arch) { 1340 case 0: return "Pre-V4"; 1341 case 1: return "ARM v4"; 1342 case 2: return "ARM v4T"; 1343 case 3: return "ARM v5T"; 1344 case 4: return "ARM v5TE"; 1345 case 5: return "ARM v5TEJ"; 1346 case 6: return "ARM v6"; 1347 case 7: return "ARM v6KZ"; 1348 case 8: return "ARM v6T2"; 1349 case 9: return "ARM v6K"; 1350 case 10: return "ARM v7"; 1351 case 11: return "ARM v6-M"; 1352 case 12: return "ARM v6S-M"; 1353 case 13: return "ARM v7E-M"; 1354 default: 1355 snprintf(s_cpu_arch, sizeof(s_cpu_arch), 1356 "Unknown (%ju)", (uintmax_t) arch); 1357 return (s_cpu_arch); 1358 } 1359 } 1360 1361 static const char * 1362 aeabi_cpu_arch_profile(uint64_t pf) 1363 { 1364 static char s_arch_profile[32]; 1365 1366 switch (pf) { 1367 case 0: 1368 return "Not applicable"; 1369 case 0x41: /* 'A' */ 1370 return "Application Profile"; 1371 case 0x52: /* 'R' */ 1372 return "Real-Time Profile"; 1373 case 0x4D: /* 'M' */ 1374 return "Microcontroller Profile"; 1375 case 0x53: /* 'S' */ 1376 return "Application or Real-Time Profile"; 1377 default: 1378 snprintf(s_arch_profile, sizeof(s_arch_profile), 1379 "Unknown (%ju)\n", (uintmax_t) pf); 1380 return (s_arch_profile); 1381 } 1382 } 1383 1384 static const char * 1385 aeabi_arm_isa(uint64_t ai) 1386 { 1387 static char s_ai[32]; 1388 1389 switch (ai) { 1390 case 0: return "No"; 1391 case 1: return "Yes"; 1392 default: 1393 snprintf(s_ai, sizeof(s_ai), "Unknown (%ju)\n", 1394 (uintmax_t) ai); 1395 return (s_ai); 1396 } 1397 } 1398 1399 static const char * 1400 aeabi_thumb_isa(uint64_t ti) 1401 { 1402 static char s_ti[32]; 1403 1404 switch (ti) { 1405 case 0: return "No"; 1406 case 1: return "16-bit Thumb"; 1407 case 2: return "32-bit Thumb"; 1408 default: 1409 snprintf(s_ti, sizeof(s_ti), "Unknown (%ju)\n", 1410 (uintmax_t) ti); 1411 return (s_ti); 1412 } 1413 } 1414 1415 static const char * 1416 aeabi_fp_arch(uint64_t fp) 1417 { 1418 static char s_fp_arch[32]; 1419 1420 switch (fp) { 1421 case 0: return "No"; 1422 case 1: return "VFPv1"; 1423 case 2: return "VFPv2"; 1424 case 3: return "VFPv3"; 1425 case 4: return "VFPv3-D16"; 1426 case 5: return "VFPv4"; 1427 case 6: return "VFPv4-D16"; 1428 default: 1429 snprintf(s_fp_arch, sizeof(s_fp_arch), "Unknown (%ju)", 1430 (uintmax_t) fp); 1431 return (s_fp_arch); 1432 } 1433 } 1434 1435 static const char * 1436 aeabi_wmmx_arch(uint64_t wmmx) 1437 { 1438 static char s_wmmx[32]; 1439 1440 switch (wmmx) { 1441 case 0: return "No"; 1442 case 1: return "WMMXv1"; 1443 case 2: return "WMMXv2"; 1444 default: 1445 snprintf(s_wmmx, sizeof(s_wmmx), "Unknown (%ju)", 1446 (uintmax_t) wmmx); 1447 return (s_wmmx); 1448 } 1449 } 1450 1451 static const char * 1452 aeabi_adv_simd_arch(uint64_t simd) 1453 { 1454 static char s_simd[32]; 1455 1456 switch (simd) { 1457 case 0: return "No"; 1458 case 1: return "NEONv1"; 1459 case 2: return "NEONv2"; 1460 default: 1461 snprintf(s_simd, sizeof(s_simd), "Unknown (%ju)", 1462 (uintmax_t) simd); 1463 return (s_simd); 1464 } 1465 } 1466 1467 static const char * 1468 aeabi_pcs_config(uint64_t pcs) 1469 { 1470 static char s_pcs[32]; 1471 1472 switch (pcs) { 1473 case 0: return "None"; 1474 case 1: return "Bare platform"; 1475 case 2: return "Linux"; 1476 case 3: return "Linux DSO"; 1477 case 4: return "Palm OS 2004"; 1478 case 5: return "Palm OS (future)"; 1479 case 6: return "Symbian OS 2004"; 1480 case 7: return "Symbian OS (future)"; 1481 default: 1482 snprintf(s_pcs, sizeof(s_pcs), "Unknown (%ju)", 1483 (uintmax_t) pcs); 1484 return (s_pcs); 1485 } 1486 } 1487 1488 static const char * 1489 aeabi_pcs_r9(uint64_t r9) 1490 { 1491 static char s_r9[32]; 1492 1493 switch (r9) { 1494 case 0: return "V6"; 1495 case 1: return "SB"; 1496 case 2: return "TLS pointer"; 1497 case 3: return "Unused"; 1498 default: 1499 snprintf(s_r9, sizeof(s_r9), "Unknown (%ju)", (uintmax_t) r9); 1500 return (s_r9); 1501 } 1502 } 1503 1504 static const char * 1505 aeabi_pcs_rw(uint64_t rw) 1506 { 1507 static char s_rw[32]; 1508 1509 switch (rw) { 1510 case 0: return "Absolute"; 1511 case 1: return "PC-relative"; 1512 case 2: return "SB-relative"; 1513 case 3: return "None"; 1514 default: 1515 snprintf(s_rw, sizeof(s_rw), "Unknown (%ju)", (uintmax_t) rw); 1516 return (s_rw); 1517 } 1518 } 1519 1520 static const char * 1521 aeabi_pcs_ro(uint64_t ro) 1522 { 1523 static char s_ro[32]; 1524 1525 switch (ro) { 1526 case 0: return "Absolute"; 1527 case 1: return "PC-relative"; 1528 case 2: return "None"; 1529 default: 1530 snprintf(s_ro, sizeof(s_ro), "Unknown (%ju)", (uintmax_t) ro); 1531 return (s_ro); 1532 } 1533 } 1534 1535 static const char * 1536 aeabi_pcs_got(uint64_t got) 1537 { 1538 static char s_got[32]; 1539 1540 switch (got) { 1541 case 0: return "None"; 1542 case 1: return "direct"; 1543 case 2: return "indirect via GOT"; 1544 default: 1545 snprintf(s_got, sizeof(s_got), "Unknown (%ju)", 1546 (uintmax_t) got); 1547 return (s_got); 1548 } 1549 } 1550 1551 static const char * 1552 aeabi_pcs_wchar_t(uint64_t wt) 1553 { 1554 static char s_wt[32]; 1555 1556 switch (wt) { 1557 case 0: return "None"; 1558 case 2: return "wchar_t size 2"; 1559 case 4: return "wchar_t size 4"; 1560 default: 1561 snprintf(s_wt, sizeof(s_wt), "Unknown (%ju)", (uintmax_t) wt); 1562 return (s_wt); 1563 } 1564 } 1565 1566 static const char * 1567 aeabi_enum_size(uint64_t es) 1568 { 1569 static char s_es[32]; 1570 1571 switch (es) { 1572 case 0: return "None"; 1573 case 1: return "smallest"; 1574 case 2: return "32-bit"; 1575 case 3: return "visible 32-bit"; 1576 default: 1577 snprintf(s_es, sizeof(s_es), "Unknown (%ju)", (uintmax_t) es); 1578 return (s_es); 1579 } 1580 } 1581 1582 static const char * 1583 aeabi_align_needed(uint64_t an) 1584 { 1585 static char s_align_n[64]; 1586 1587 switch (an) { 1588 case 0: return "No"; 1589 case 1: return "8-byte align"; 1590 case 2: return "4-byte align"; 1591 case 3: return "Reserved"; 1592 default: 1593 if (an >= 4 && an <= 12) 1594 snprintf(s_align_n, sizeof(s_align_n), "8-byte align" 1595 " and up to 2^%ju-byte extended align", 1596 (uintmax_t) an); 1597 else 1598 snprintf(s_align_n, sizeof(s_align_n), "Unknown (%ju)", 1599 (uintmax_t) an); 1600 return (s_align_n); 1601 } 1602 } 1603 1604 static const char * 1605 aeabi_align_preserved(uint64_t ap) 1606 { 1607 static char s_align_p[128]; 1608 1609 switch (ap) { 1610 case 0: return "No"; 1611 case 1: return "8-byte align"; 1612 case 2: return "8-byte align and SP % 8 == 0"; 1613 case 3: return "Reserved"; 1614 default: 1615 if (ap >= 4 && ap <= 12) 1616 snprintf(s_align_p, sizeof(s_align_p), "8-byte align" 1617 " and SP %% 8 == 0 and up to 2^%ju-byte extended" 1618 " align", (uintmax_t) ap); 1619 else 1620 snprintf(s_align_p, sizeof(s_align_p), "Unknown (%ju)", 1621 (uintmax_t) ap); 1622 return (s_align_p); 1623 } 1624 } 1625 1626 static const char * 1627 aeabi_fp_rounding(uint64_t fr) 1628 { 1629 static char s_fp_r[32]; 1630 1631 switch (fr) { 1632 case 0: return "Unused"; 1633 case 1: return "Needed"; 1634 default: 1635 snprintf(s_fp_r, sizeof(s_fp_r), "Unknown (%ju)", 1636 (uintmax_t) fr); 1637 return (s_fp_r); 1638 } 1639 } 1640 1641 static const char * 1642 aeabi_fp_denormal(uint64_t fd) 1643 { 1644 static char s_fp_d[32]; 1645 1646 switch (fd) { 1647 case 0: return "Unused"; 1648 case 1: return "Needed"; 1649 case 2: return "Sign Only"; 1650 default: 1651 snprintf(s_fp_d, sizeof(s_fp_d), "Unknown (%ju)", 1652 (uintmax_t) fd); 1653 return (s_fp_d); 1654 } 1655 } 1656 1657 static const char * 1658 aeabi_fp_exceptions(uint64_t fe) 1659 { 1660 static char s_fp_e[32]; 1661 1662 switch (fe) { 1663 case 0: return "Unused"; 1664 case 1: return "Needed"; 1665 default: 1666 snprintf(s_fp_e, sizeof(s_fp_e), "Unknown (%ju)", 1667 (uintmax_t) fe); 1668 return (s_fp_e); 1669 } 1670 } 1671 1672 static const char * 1673 aeabi_fp_user_exceptions(uint64_t fu) 1674 { 1675 static char s_fp_u[32]; 1676 1677 switch (fu) { 1678 case 0: return "Unused"; 1679 case 1: return "Needed"; 1680 default: 1681 snprintf(s_fp_u, sizeof(s_fp_u), "Unknown (%ju)", 1682 (uintmax_t) fu); 1683 return (s_fp_u); 1684 } 1685 } 1686 1687 static const char * 1688 aeabi_fp_number_model(uint64_t fn) 1689 { 1690 static char s_fp_n[32]; 1691 1692 switch (fn) { 1693 case 0: return "Unused"; 1694 case 1: return "IEEE 754 normal"; 1695 case 2: return "RTABI"; 1696 case 3: return "IEEE 754"; 1697 default: 1698 snprintf(s_fp_n, sizeof(s_fp_n), "Unknown (%ju)", 1699 (uintmax_t) fn); 1700 return (s_fp_n); 1701 } 1702 } 1703 1704 static const char * 1705 aeabi_fp_16bit_format(uint64_t fp16) 1706 { 1707 static char s_fp_16[64]; 1708 1709 switch (fp16) { 1710 case 0: return "None"; 1711 case 1: return "IEEE 754"; 1712 case 2: return "VFPv3/Advanced SIMD (alternative format)"; 1713 default: 1714 snprintf(s_fp_16, sizeof(s_fp_16), "Unknown (%ju)", 1715 (uintmax_t) fp16); 1716 return (s_fp_16); 1717 } 1718 } 1719 1720 static const char * 1721 aeabi_mpext(uint64_t mp) 1722 { 1723 static char s_mp[32]; 1724 1725 switch (mp) { 1726 case 0: return "Not allowed"; 1727 case 1: return "Allowed"; 1728 default: 1729 snprintf(s_mp, sizeof(s_mp), "Unknown (%ju)", 1730 (uintmax_t) mp); 1731 return (s_mp); 1732 } 1733 } 1734 1735 static const char * 1736 aeabi_div(uint64_t du) 1737 { 1738 static char s_du[32]; 1739 1740 switch (du) { 1741 case 0: return "Yes (V7-R/V7-M)"; 1742 case 1: return "No"; 1743 case 2: return "Yes (V7-A)"; 1744 default: 1745 snprintf(s_du, sizeof(s_du), "Unknown (%ju)", 1746 (uintmax_t) du); 1747 return (s_du); 1748 } 1749 } 1750 1751 static const char * 1752 aeabi_t2ee(uint64_t t2ee) 1753 { 1754 static char s_t2ee[32]; 1755 1756 switch (t2ee) { 1757 case 0: return "Not allowed"; 1758 case 1: return "Allowed"; 1759 default: 1760 snprintf(s_t2ee, sizeof(s_t2ee), "Unknown(%ju)", 1761 (uintmax_t) t2ee); 1762 return (s_t2ee); 1763 } 1764 1765 } 1766 1767 static const char * 1768 aeabi_hardfp(uint64_t hfp) 1769 { 1770 static char s_hfp[32]; 1771 1772 switch (hfp) { 1773 case 0: return "Tag_FP_arch"; 1774 case 1: return "only SP"; 1775 case 2: return "only DP"; 1776 case 3: return "both SP and DP"; 1777 default: 1778 snprintf(s_hfp, sizeof(s_hfp), "Unknown (%ju)", 1779 (uintmax_t) hfp); 1780 return (s_hfp); 1781 } 1782 } 1783 1784 static const char * 1785 aeabi_vfp_args(uint64_t va) 1786 { 1787 static char s_va[32]; 1788 1789 switch (va) { 1790 case 0: return "AAPCS (base variant)"; 1791 case 1: return "AAPCS (VFP variant)"; 1792 case 2: return "toolchain-specific"; 1793 default: 1794 snprintf(s_va, sizeof(s_va), "Unknown (%ju)", (uintmax_t) va); 1795 return (s_va); 1796 } 1797 } 1798 1799 static const char * 1800 aeabi_wmmx_args(uint64_t wa) 1801 { 1802 static char s_wa[32]; 1803 1804 switch (wa) { 1805 case 0: return "AAPCS (base variant)"; 1806 case 1: return "Intel WMMX"; 1807 case 2: return "toolchain-specific"; 1808 default: 1809 snprintf(s_wa, sizeof(s_wa), "Unknown(%ju)", (uintmax_t) wa); 1810 return (s_wa); 1811 } 1812 } 1813 1814 static const char * 1815 aeabi_unaligned_access(uint64_t ua) 1816 { 1817 static char s_ua[32]; 1818 1819 switch (ua) { 1820 case 0: return "Not allowed"; 1821 case 1: return "Allowed"; 1822 default: 1823 snprintf(s_ua, sizeof(s_ua), "Unknown(%ju)", (uintmax_t) ua); 1824 return (s_ua); 1825 } 1826 } 1827 1828 static const char * 1829 aeabi_fp_hpext(uint64_t fh) 1830 { 1831 static char s_fh[32]; 1832 1833 switch (fh) { 1834 case 0: return "Not allowed"; 1835 case 1: return "Allowed"; 1836 default: 1837 snprintf(s_fh, sizeof(s_fh), "Unknown(%ju)", (uintmax_t) fh); 1838 return (s_fh); 1839 } 1840 } 1841 1842 static const char * 1843 aeabi_optm_goal(uint64_t og) 1844 { 1845 static char s_og[32]; 1846 1847 switch (og) { 1848 case 0: return "None"; 1849 case 1: return "Speed"; 1850 case 2: return "Speed aggressive"; 1851 case 3: return "Space"; 1852 case 4: return "Space aggressive"; 1853 case 5: return "Debugging"; 1854 case 6: return "Best Debugging"; 1855 default: 1856 snprintf(s_og, sizeof(s_og), "Unknown(%ju)", (uintmax_t) og); 1857 return (s_og); 1858 } 1859 } 1860 1861 static const char * 1862 aeabi_fp_optm_goal(uint64_t fog) 1863 { 1864 static char s_fog[32]; 1865 1866 switch (fog) { 1867 case 0: return "None"; 1868 case 1: return "Speed"; 1869 case 2: return "Speed aggressive"; 1870 case 3: return "Space"; 1871 case 4: return "Space aggressive"; 1872 case 5: return "Accurary"; 1873 case 6: return "Best Accurary"; 1874 default: 1875 snprintf(s_fog, sizeof(s_fog), "Unknown(%ju)", 1876 (uintmax_t) fog); 1877 return (s_fog); 1878 } 1879 } 1880 1881 static const char * 1882 aeabi_virtual(uint64_t vt) 1883 { 1884 static char s_virtual[64]; 1885 1886 switch (vt) { 1887 case 0: return "No"; 1888 case 1: return "TrustZone"; 1889 case 2: return "Virtualization extension"; 1890 case 3: return "TrustZone and virtualization extension"; 1891 default: 1892 snprintf(s_virtual, sizeof(s_virtual), "Unknown(%ju)", 1893 (uintmax_t) vt); 1894 return (s_virtual); 1895 } 1896 } 1897 1898 static struct { 1899 uint64_t tag; 1900 const char *s_tag; 1901 const char *(*get_desc)(uint64_t val); 1902 } aeabi_tags[] = { 1903 {4, "Tag_CPU_raw_name", NULL}, 1904 {5, "Tag_CPU_name", NULL}, 1905 {6, "Tag_CPU_arch", aeabi_cpu_arch}, 1906 {7, "Tag_CPU_arch_profile", aeabi_cpu_arch_profile}, 1907 {8, "Tag_ARM_ISA_use", aeabi_arm_isa}, 1908 {9, "Tag_THUMB_ISA_use", aeabi_thumb_isa}, 1909 {10, "Tag_FP_arch", aeabi_fp_arch}, 1910 {11, "Tag_WMMX_arch", aeabi_wmmx_arch}, 1911 {12, "Tag_Advanced_SIMD_arch", aeabi_adv_simd_arch}, 1912 {13, "Tag_PCS_config", aeabi_pcs_config}, 1913 {14, "Tag_ABI_PCS_R9_use", aeabi_pcs_r9}, 1914 {15, "Tag_ABI_PCS_RW_data", aeabi_pcs_rw}, 1915 {16, "Tag_ABI_PCS_RO_data", aeabi_pcs_ro}, 1916 {17, "Tag_ABI_PCS_GOT_use", aeabi_pcs_got}, 1917 {18, "Tag_ABI_PCS_wchar_t", aeabi_pcs_wchar_t}, 1918 {19, "Tag_ABI_FP_rounding", aeabi_fp_rounding}, 1919 {20, "Tag_ABI_FP_denormal", aeabi_fp_denormal}, 1920 {21, "Tag_ABI_FP_exceptions", aeabi_fp_exceptions}, 1921 {22, "Tag_ABI_FP_user_exceptions", aeabi_fp_user_exceptions}, 1922 {23, "Tag_ABI_FP_number_model", aeabi_fp_number_model}, 1923 {24, "Tag_ABI_align_needed", aeabi_align_needed}, 1924 {25, "Tag_ABI_align_preserved", aeabi_align_preserved}, 1925 {26, "Tag_ABI_enum_size", aeabi_enum_size}, 1926 {27, "Tag_ABI_HardFP_use", aeabi_hardfp}, 1927 {28, "Tag_ABI_VFP_args", aeabi_vfp_args}, 1928 {29, "Tag_ABI_WMMX_args", aeabi_wmmx_args}, 1929 {30, "Tag_ABI_optimization_goals", aeabi_optm_goal}, 1930 {31, "Tag_ABI_FP_optimization_goals", aeabi_fp_optm_goal}, 1931 {32, "Tag_compatibility", NULL}, 1932 {34, "Tag_CPU_unaligned_access", aeabi_unaligned_access}, 1933 {36, "Tag_FP_HP_extension", aeabi_fp_hpext}, 1934 {38, "Tag_ABI_FP_16bit_format", aeabi_fp_16bit_format}, 1935 {42, "Tag_MPextension_use", aeabi_mpext}, 1936 {44, "Tag_DIV_use", aeabi_div}, 1937 {64, "Tag_nodefaults", NULL}, 1938 {65, "Tag_also_compatible_with", NULL}, 1939 {66, "Tag_T2EE_use", aeabi_t2ee}, 1940 {67, "Tag_conformance", NULL}, 1941 {68, "Tag_Virtualization_use", aeabi_virtual}, 1942 {70, "Tag_MPextension_use", aeabi_mpext}, 1943 }; 1944 1945 static const char * 1946 mips_abi_fp(uint64_t fp) 1947 { 1948 static char s_mips_abi_fp[64]; 1949 1950 switch (fp) { 1951 case 0: return "N/A"; 1952 case 1: return "Hard float (double precision)"; 1953 case 2: return "Hard float (single precision)"; 1954 case 3: return "Soft float"; 1955 case 4: return "64-bit float (-mips32r2 -mfp64)"; 1956 default: 1957 snprintf(s_mips_abi_fp, sizeof(s_mips_abi_fp), "Unknown(%ju)", 1958 (uintmax_t) fp); 1959 return (s_mips_abi_fp); 1960 } 1961 } 1962 1963 static const char * 1964 ppc_abi_fp(uint64_t fp) 1965 { 1966 static char s_ppc_abi_fp[64]; 1967 1968 switch (fp) { 1969 case 0: return "N/A"; 1970 case 1: return "Hard float (double precision)"; 1971 case 2: return "Soft float"; 1972 case 3: return "Hard float (single precision)"; 1973 default: 1974 snprintf(s_ppc_abi_fp, sizeof(s_ppc_abi_fp), "Unknown(%ju)", 1975 (uintmax_t) fp); 1976 return (s_ppc_abi_fp); 1977 } 1978 } 1979 1980 static const char * 1981 ppc_abi_vector(uint64_t vec) 1982 { 1983 static char s_vec[64]; 1984 1985 switch (vec) { 1986 case 0: return "N/A"; 1987 case 1: return "Generic purpose registers"; 1988 case 2: return "AltiVec registers"; 1989 case 3: return "SPE registers"; 1990 default: 1991 snprintf(s_vec, sizeof(s_vec), "Unknown(%ju)", (uintmax_t) vec); 1992 return (s_vec); 1993 } 1994 } 1995 1996 static const char * 1997 dwarf_reg(unsigned int mach, unsigned int reg) 1998 { 1999 2000 switch (mach) { 2001 case EM_386: 2002 case EM_IAMCU: 2003 switch (reg) { 2004 case 0: return "eax"; 2005 case 1: return "ecx"; 2006 case 2: return "edx"; 2007 case 3: return "ebx"; 2008 case 4: return "esp"; 2009 case 5: return "ebp"; 2010 case 6: return "esi"; 2011 case 7: return "edi"; 2012 case 8: return "eip"; 2013 case 9: return "eflags"; 2014 case 11: return "st0"; 2015 case 12: return "st1"; 2016 case 13: return "st2"; 2017 case 14: return "st3"; 2018 case 15: return "st4"; 2019 case 16: return "st5"; 2020 case 17: return "st6"; 2021 case 18: return "st7"; 2022 case 21: return "xmm0"; 2023 case 22: return "xmm1"; 2024 case 23: return "xmm2"; 2025 case 24: return "xmm3"; 2026 case 25: return "xmm4"; 2027 case 26: return "xmm5"; 2028 case 27: return "xmm6"; 2029 case 28: return "xmm7"; 2030 case 29: return "mm0"; 2031 case 30: return "mm1"; 2032 case 31: return "mm2"; 2033 case 32: return "mm3"; 2034 case 33: return "mm4"; 2035 case 34: return "mm5"; 2036 case 35: return "mm6"; 2037 case 36: return "mm7"; 2038 case 37: return "fcw"; 2039 case 38: return "fsw"; 2040 case 39: return "mxcsr"; 2041 case 40: return "es"; 2042 case 41: return "cs"; 2043 case 42: return "ss"; 2044 case 43: return "ds"; 2045 case 44: return "fs"; 2046 case 45: return "gs"; 2047 case 48: return "tr"; 2048 case 49: return "ldtr"; 2049 default: return (NULL); 2050 } 2051 case EM_X86_64: 2052 switch (reg) { 2053 case 0: return "rax"; 2054 case 1: return "rdx"; 2055 case 2: return "rcx"; 2056 case 3: return "rbx"; 2057 case 4: return "rsi"; 2058 case 5: return "rdi"; 2059 case 6: return "rbp"; 2060 case 7: return "rsp"; 2061 case 16: return "rip"; 2062 case 17: return "xmm0"; 2063 case 18: return "xmm1"; 2064 case 19: return "xmm2"; 2065 case 20: return "xmm3"; 2066 case 21: return "xmm4"; 2067 case 22: return "xmm5"; 2068 case 23: return "xmm6"; 2069 case 24: return "xmm7"; 2070 case 25: return "xmm8"; 2071 case 26: return "xmm9"; 2072 case 27: return "xmm10"; 2073 case 28: return "xmm11"; 2074 case 29: return "xmm12"; 2075 case 30: return "xmm13"; 2076 case 31: return "xmm14"; 2077 case 32: return "xmm15"; 2078 case 33: return "st0"; 2079 case 34: return "st1"; 2080 case 35: return "st2"; 2081 case 36: return "st3"; 2082 case 37: return "st4"; 2083 case 38: return "st5"; 2084 case 39: return "st6"; 2085 case 40: return "st7"; 2086 case 41: return "mm0"; 2087 case 42: return "mm1"; 2088 case 43: return "mm2"; 2089 case 44: return "mm3"; 2090 case 45: return "mm4"; 2091 case 46: return "mm5"; 2092 case 47: return "mm6"; 2093 case 48: return "mm7"; 2094 case 49: return "rflags"; 2095 case 50: return "es"; 2096 case 51: return "cs"; 2097 case 52: return "ss"; 2098 case 53: return "ds"; 2099 case 54: return "fs"; 2100 case 55: return "gs"; 2101 case 58: return "fs.base"; 2102 case 59: return "gs.base"; 2103 case 62: return "tr"; 2104 case 63: return "ldtr"; 2105 case 64: return "mxcsr"; 2106 case 65: return "fcw"; 2107 case 66: return "fsw"; 2108 default: return (NULL); 2109 } 2110 default: 2111 return (NULL); 2112 } 2113 } 2114 2115 static void 2116 dump_ehdr(struct readelf *re) 2117 { 2118 size_t phnum, shnum, shstrndx; 2119 int i; 2120 2121 printf("ELF Header:\n"); 2122 2123 /* e_ident[]. */ 2124 printf(" Magic: "); 2125 for (i = 0; i < EI_NIDENT; i++) 2126 printf("%.2x ", re->ehdr.e_ident[i]); 2127 putchar('\n'); 2128 2129 /* EI_CLASS. */ 2130 printf("%-37s%s\n", " Class:", elf_class(re->ehdr.e_ident[EI_CLASS])); 2131 2132 /* EI_DATA. */ 2133 printf("%-37s%s\n", " Data:", elf_endian(re->ehdr.e_ident[EI_DATA])); 2134 2135 /* EI_VERSION. */ 2136 printf("%-37s%d %s\n", " Version:", re->ehdr.e_ident[EI_VERSION], 2137 elf_ver(re->ehdr.e_ident[EI_VERSION])); 2138 2139 /* EI_OSABI. */ 2140 printf("%-37s%s\n", " OS/ABI:", elf_osabi(re->ehdr.e_ident[EI_OSABI])); 2141 2142 /* EI_ABIVERSION. */ 2143 printf("%-37s%d\n", " ABI Version:", re->ehdr.e_ident[EI_ABIVERSION]); 2144 2145 /* e_type. */ 2146 printf("%-37s%s\n", " Type:", elf_type(re->ehdr.e_type)); 2147 2148 /* e_machine. */ 2149 printf("%-37s%s\n", " Machine:", elf_machine(re->ehdr.e_machine)); 2150 2151 /* e_version. */ 2152 printf("%-37s%#x\n", " Version:", re->ehdr.e_version); 2153 2154 /* e_entry. */ 2155 printf("%-37s%#jx\n", " Entry point address:", 2156 (uintmax_t)re->ehdr.e_entry); 2157 2158 /* e_phoff. */ 2159 printf("%-37s%ju (bytes into file)\n", " Start of program headers:", 2160 (uintmax_t)re->ehdr.e_phoff); 2161 2162 /* e_shoff. */ 2163 printf("%-37s%ju (bytes into file)\n", " Start of section headers:", 2164 (uintmax_t)re->ehdr.e_shoff); 2165 2166 /* e_flags. */ 2167 printf("%-37s%#x", " Flags:", re->ehdr.e_flags); 2168 dump_eflags(re, re->ehdr.e_flags); 2169 putchar('\n'); 2170 2171 /* e_ehsize. */ 2172 printf("%-37s%u (bytes)\n", " Size of this header:", 2173 re->ehdr.e_ehsize); 2174 2175 /* e_phentsize. */ 2176 printf("%-37s%u (bytes)\n", " Size of program headers:", 2177 re->ehdr.e_phentsize); 2178 2179 /* e_phnum. */ 2180 printf("%-37s%u", " Number of program headers:", re->ehdr.e_phnum); 2181 if (re->ehdr.e_phnum == PN_XNUM) { 2182 /* Extended program header numbering is in use. */ 2183 if (elf_getphnum(re->elf, &phnum)) 2184 printf(" (%zu)", phnum); 2185 } 2186 putchar('\n'); 2187 2188 /* e_shentsize. */ 2189 printf("%-37s%u (bytes)\n", " Size of section headers:", 2190 re->ehdr.e_shentsize); 2191 2192 /* e_shnum. */ 2193 printf("%-37s%u", " Number of section headers:", re->ehdr.e_shnum); 2194 if (re->ehdr.e_shnum == SHN_UNDEF) { 2195 /* Extended section numbering is in use. */ 2196 if (elf_getshnum(re->elf, &shnum)) 2197 printf(" (%ju)", (uintmax_t)shnum); 2198 } 2199 putchar('\n'); 2200 2201 /* e_shstrndx. */ 2202 printf("%-37s%u", " Section header string table index:", 2203 re->ehdr.e_shstrndx); 2204 if (re->ehdr.e_shstrndx == SHN_XINDEX) { 2205 /* Extended section numbering is in use. */ 2206 if (elf_getshstrndx(re->elf, &shstrndx)) 2207 printf(" (%ju)", (uintmax_t)shstrndx); 2208 } 2209 putchar('\n'); 2210 } 2211 2212 static void 2213 dump_eflags(struct readelf *re, uint64_t e_flags) 2214 { 2215 struct eflags_desc *edesc; 2216 int arm_eabi; 2217 2218 edesc = NULL; 2219 switch (re->ehdr.e_machine) { 2220 case EM_ARM: 2221 arm_eabi = (e_flags & EF_ARM_EABIMASK) >> 24; 2222 if (arm_eabi == 0) 2223 printf(", GNU EABI"); 2224 else if (arm_eabi <= 5) 2225 printf(", Version%d EABI", arm_eabi); 2226 edesc = arm_eflags_desc; 2227 break; 2228 case EM_MIPS: 2229 case EM_MIPS_RS3_LE: 2230 switch ((e_flags & EF_MIPS_ARCH) >> 28) { 2231 case 0: printf(", mips1"); break; 2232 case 1: printf(", mips2"); break; 2233 case 2: printf(", mips3"); break; 2234 case 3: printf(", mips4"); break; 2235 case 4: printf(", mips5"); break; 2236 case 5: printf(", mips32"); break; 2237 case 6: printf(", mips64"); break; 2238 case 7: printf(", mips32r2"); break; 2239 case 8: printf(", mips64r2"); break; 2240 default: break; 2241 } 2242 switch ((e_flags & 0x00FF0000) >> 16) { 2243 case 0x81: printf(", 3900"); break; 2244 case 0x82: printf(", 4010"); break; 2245 case 0x83: printf(", 4100"); break; 2246 case 0x85: printf(", 4650"); break; 2247 case 0x87: printf(", 4120"); break; 2248 case 0x88: printf(", 4111"); break; 2249 case 0x8a: printf(", sb1"); break; 2250 case 0x8b: printf(", octeon"); break; 2251 case 0x8c: printf(", xlr"); break; 2252 case 0x91: printf(", 5400"); break; 2253 case 0x98: printf(", 5500"); break; 2254 case 0x99: printf(", 9000"); break; 2255 case 0xa0: printf(", loongson-2e"); break; 2256 case 0xa1: printf(", loongson-2f"); break; 2257 default: break; 2258 } 2259 switch ((e_flags & 0x0000F000) >> 12) { 2260 case 1: printf(", o32"); break; 2261 case 2: printf(", o64"); break; 2262 case 3: printf(", eabi32"); break; 2263 case 4: printf(", eabi64"); break; 2264 default: break; 2265 } 2266 edesc = mips_eflags_desc; 2267 break; 2268 case EM_PPC: 2269 case EM_PPC64: 2270 edesc = powerpc_eflags_desc; 2271 break; 2272 case EM_SPARC: 2273 case EM_SPARC32PLUS: 2274 case EM_SPARCV9: 2275 switch ((e_flags & EF_SPARCV9_MM)) { 2276 case EF_SPARCV9_TSO: printf(", tso"); break; 2277 case EF_SPARCV9_PSO: printf(", pso"); break; 2278 case EF_SPARCV9_MM: printf(", rmo"); break; 2279 default: break; 2280 } 2281 edesc = sparc_eflags_desc; 2282 break; 2283 default: 2284 break; 2285 } 2286 2287 if (edesc != NULL) { 2288 while (edesc->desc != NULL) { 2289 if (e_flags & edesc->flag) 2290 printf(", %s", edesc->desc); 2291 edesc++; 2292 } 2293 } 2294 } 2295 2296 static void 2297 dump_phdr(struct readelf *re) 2298 { 2299 const char *rawfile; 2300 GElf_Phdr phdr; 2301 size_t phnum, size; 2302 int i, j; 2303 2304 #define PH_HDR "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz", \ 2305 "MemSiz", "Flg", "Align" 2306 #define PH_CT phdr_type(re->ehdr.e_machine, phdr.p_type), \ 2307 (uintmax_t)phdr.p_offset, (uintmax_t)phdr.p_vaddr, \ 2308 (uintmax_t)phdr.p_paddr, (uintmax_t)phdr.p_filesz, \ 2309 (uintmax_t)phdr.p_memsz, \ 2310 phdr.p_flags & PF_R ? 'R' : ' ', \ 2311 phdr.p_flags & PF_W ? 'W' : ' ', \ 2312 phdr.p_flags & PF_X ? 'E' : ' ', \ 2313 (uintmax_t)phdr.p_align 2314 2315 if (elf_getphnum(re->elf, &phnum) == 0) { 2316 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 2317 return; 2318 } 2319 if (phnum == 0) { 2320 printf("\nThere are no program headers in this file.\n"); 2321 return; 2322 } 2323 2324 printf("\nElf file type is %s", elf_type(re->ehdr.e_type)); 2325 printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry); 2326 printf("There are %ju program headers, starting at offset %ju\n", 2327 (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff); 2328 2329 /* Dump program headers. */ 2330 printf("\nProgram Headers:\n"); 2331 if (re->ec == ELFCLASS32) 2332 printf(" %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR); 2333 else if (re->options & RE_WW) 2334 printf(" %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR); 2335 else 2336 printf(" %-15s%-19s%-19s%s\n %-19s%-20s" 2337 "%-7s%s\n", PH_HDR); 2338 for (i = 0; (size_t) i < phnum; i++) { 2339 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2340 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2341 continue; 2342 } 2343 /* TODO: Add arch-specific segment type dump. */ 2344 if (re->ec == ELFCLASS32) 2345 printf(" %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx " 2346 "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT); 2347 else if (re->options & RE_WW) 2348 printf(" %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx " 2349 "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT); 2350 else 2351 printf(" %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n" 2352 " 0x%16.16jx 0x%16.16jx %c%c%c" 2353 " %#jx\n", PH_CT); 2354 if (phdr.p_type == PT_INTERP) { 2355 if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) { 2356 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 2357 continue; 2358 } 2359 if (phdr.p_offset >= size) { 2360 warnx("invalid program header offset"); 2361 continue; 2362 } 2363 printf(" [Requesting program interpreter: %s]\n", 2364 rawfile + phdr.p_offset); 2365 } 2366 } 2367 2368 /* Dump section to segment mapping. */ 2369 if (re->shnum == 0) 2370 return; 2371 printf("\n Section to Segment mapping:\n"); 2372 printf(" Segment Sections...\n"); 2373 for (i = 0; (size_t)i < phnum; i++) { 2374 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2375 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2376 continue; 2377 } 2378 printf(" %2.2d ", i); 2379 /* skip NULL section. */ 2380 for (j = 1; (size_t)j < re->shnum; j++) 2381 if (re->sl[j].addr >= phdr.p_vaddr && 2382 re->sl[j].addr + re->sl[j].sz <= 2383 phdr.p_vaddr + phdr.p_memsz) 2384 printf("%s ", re->sl[j].name); 2385 printf("\n"); 2386 } 2387 #undef PH_HDR 2388 #undef PH_CT 2389 } 2390 2391 static char * 2392 section_flags(struct readelf *re, struct section *s) 2393 { 2394 #define BUF_SZ 256 2395 static char buf[BUF_SZ]; 2396 int i, p, nb; 2397 2398 p = 0; 2399 nb = re->ec == ELFCLASS32 ? 8 : 16; 2400 if (re->options & RE_T) { 2401 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb, 2402 (uintmax_t)s->flags); 2403 p += nb + 4; 2404 } 2405 for (i = 0; section_flag[i].ln != NULL; i++) { 2406 if ((s->flags & section_flag[i].value) == 0) 2407 continue; 2408 if (re->options & RE_T) { 2409 snprintf(&buf[p], BUF_SZ - p, "%s, ", 2410 section_flag[i].ln); 2411 p += strlen(section_flag[i].ln) + 2; 2412 } else 2413 buf[p++] = section_flag[i].sn; 2414 } 2415 if (re->options & RE_T && p > nb + 4) 2416 p -= 2; 2417 buf[p] = '\0'; 2418 2419 return (buf); 2420 } 2421 2422 static void 2423 dump_shdr(struct readelf *re) 2424 { 2425 struct section *s; 2426 int i; 2427 2428 #define S_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2429 "Flg", "Lk", "Inf", "Al" 2430 #define S_HDRL "[Nr] Name", "Type", "Address", "Offset", "Size", \ 2431 "EntSize", "Flags", "Link", "Info", "Align" 2432 #define ST_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2433 "Lk", "Inf", "Al", "Flags" 2434 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link", \ 2435 "Size", "EntSize", "Info", "Align", "Flags" 2436 #define S_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2437 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2438 (uintmax_t)s->entsize, section_flags(re, s), \ 2439 s->link, s->info, (uintmax_t)s->align 2440 #define ST_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2441 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2442 (uintmax_t)s->entsize, s->link, s->info, \ 2443 (uintmax_t)s->align, section_flags(re, s) 2444 #define ST_CTL i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2445 (uintmax_t)s->addr, (uintmax_t)s->off, s->link, \ 2446 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info, \ 2447 (uintmax_t)s->align, section_flags(re, s) 2448 2449 if (re->shnum == 0) { 2450 printf("\nThere are no sections in this file.\n"); 2451 return; 2452 } 2453 printf("There are %ju section headers, starting at offset 0x%jx:\n", 2454 (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff); 2455 printf("\nSection Headers:\n"); 2456 if (re->ec == ELFCLASS32) { 2457 if (re->options & RE_T) 2458 printf(" %s\n %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n" 2459 "%12s\n", ST_HDR); 2460 else 2461 printf(" %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2462 S_HDR); 2463 } else if (re->options & RE_WW) { 2464 if (re->options & RE_T) 2465 printf(" %s\n %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n" 2466 "%12s\n", ST_HDR); 2467 else 2468 printf(" %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2469 S_HDR); 2470 } else { 2471 if (re->options & RE_T) 2472 printf(" %s\n %-18s%-17s%-18s%s\n %-18s" 2473 "%-17s%-18s%s\n%12s\n", ST_HDRL); 2474 else 2475 printf(" %-23s%-17s%-18s%s\n %-18s%-17s%-7s%" 2476 "-6s%-6s%s\n", S_HDRL); 2477 } 2478 for (i = 0; (size_t)i < re->shnum; i++) { 2479 s = &re->sl[i]; 2480 if (re->ec == ELFCLASS32) { 2481 if (re->options & RE_T) 2482 printf(" [%2d] %s\n %-15.15s %8.8jx" 2483 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2484 " %s\n", ST_CT); 2485 else 2486 printf(" [%2d] %-17.17s %-15.15s %8.8jx" 2487 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2488 S_CT); 2489 } else if (re->options & RE_WW) { 2490 if (re->options & RE_T) 2491 printf(" [%2d] %s\n %-15.15s %16.16jx" 2492 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2493 " %s\n", ST_CT); 2494 else 2495 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2496 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2497 S_CT); 2498 } else { 2499 if (re->options & RE_T) 2500 printf(" [%2d] %s\n %-15.15s %16.16jx" 2501 " %16.16jx %u\n %16.16jx %16.16jx" 2502 " %-16u %ju\n %s\n", ST_CTL); 2503 else 2504 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2505 " %8.8jx\n %16.16jx %16.16jx " 2506 "%3s %2u %3u %ju\n", S_CT); 2507 } 2508 } 2509 if ((re->options & RE_T) == 0) 2510 printf("Key to Flags:\n W (write), A (alloc)," 2511 " X (execute), M (merge), S (strings)\n" 2512 " I (info), L (link order), G (group), x (unknown)\n" 2513 " O (extra OS processing required)" 2514 " o (OS specific), p (processor specific)\n"); 2515 2516 #undef S_HDR 2517 #undef S_HDRL 2518 #undef ST_HDR 2519 #undef ST_HDRL 2520 #undef S_CT 2521 #undef ST_CT 2522 #undef ST_CTL 2523 } 2524 2525 /* 2526 * Return number of entries in the given section. We'd prefer ent_count be a 2527 * size_t *, but libelf APIs already use int for section indices. 2528 */ 2529 static int 2530 get_ent_count(struct section *s, int *ent_count) 2531 { 2532 if (s->entsize == 0) { 2533 warnx("section %s has entry size 0", s->name); 2534 return (0); 2535 } else if (s->sz / s->entsize > INT_MAX) { 2536 warnx("section %s has invalid section count", s->name); 2537 return (0); 2538 } 2539 *ent_count = (int)(s->sz / s->entsize); 2540 return (1); 2541 } 2542 2543 static void 2544 dump_dynamic(struct readelf *re) 2545 { 2546 GElf_Dyn dyn; 2547 Elf_Data *d; 2548 struct section *s; 2549 int elferr, i, is_dynamic, j, jmax, nentries; 2550 2551 is_dynamic = 0; 2552 2553 for (i = 0; (size_t)i < re->shnum; i++) { 2554 s = &re->sl[i]; 2555 if (s->type != SHT_DYNAMIC) 2556 continue; 2557 (void) elf_errno(); 2558 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2559 elferr = elf_errno(); 2560 if (elferr != 0) 2561 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 2562 continue; 2563 } 2564 if (d->d_size <= 0) 2565 continue; 2566 2567 is_dynamic = 1; 2568 2569 /* Determine the actual number of table entries. */ 2570 nentries = 0; 2571 if (!get_ent_count(s, &jmax)) 2572 continue; 2573 for (j = 0; j < jmax; j++) { 2574 if (gelf_getdyn(d, j, &dyn) != &dyn) { 2575 warnx("gelf_getdyn failed: %s", 2576 elf_errmsg(-1)); 2577 continue; 2578 } 2579 nentries ++; 2580 if (dyn.d_tag == DT_NULL) 2581 break; 2582 } 2583 2584 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off); 2585 printf(" contains %u entries:\n", nentries); 2586 2587 if (re->ec == ELFCLASS32) 2588 printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value"); 2589 else 2590 printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value"); 2591 2592 for (j = 0; j < nentries; j++) { 2593 if (gelf_getdyn(d, j, &dyn) != &dyn) 2594 continue; 2595 /* Dump dynamic entry type. */ 2596 if (re->ec == ELFCLASS32) 2597 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag); 2598 else 2599 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag); 2600 printf(" %-20s", dt_type(re->ehdr.e_machine, 2601 dyn.d_tag)); 2602 /* Dump dynamic entry value. */ 2603 dump_dyn_val(re, &dyn, s->link); 2604 } 2605 } 2606 2607 if (!is_dynamic) 2608 printf("\nThere is no dynamic section in this file.\n"); 2609 } 2610 2611 static char * 2612 timestamp(time_t ti) 2613 { 2614 static char ts[32]; 2615 struct tm *t; 2616 2617 t = gmtime(&ti); 2618 snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d", 2619 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, 2620 t->tm_min, t->tm_sec); 2621 2622 return (ts); 2623 } 2624 2625 static const char * 2626 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val) 2627 { 2628 const char *name; 2629 2630 if (stab == SHN_UNDEF) 2631 name = "ERROR"; 2632 else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) { 2633 (void) elf_errno(); /* clear error */ 2634 name = "ERROR"; 2635 } 2636 2637 return (name); 2638 } 2639 2640 static void 2641 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn) 2642 { 2643 switch (re->ehdr.e_machine) { 2644 case EM_MIPS: 2645 case EM_MIPS_RS3_LE: 2646 switch (dyn->d_tag) { 2647 case DT_MIPS_RLD_VERSION: 2648 case DT_MIPS_LOCAL_GOTNO: 2649 case DT_MIPS_CONFLICTNO: 2650 case DT_MIPS_LIBLISTNO: 2651 case DT_MIPS_SYMTABNO: 2652 case DT_MIPS_UNREFEXTNO: 2653 case DT_MIPS_GOTSYM: 2654 case DT_MIPS_HIPAGENO: 2655 case DT_MIPS_DELTA_CLASS_NO: 2656 case DT_MIPS_DELTA_INSTANCE_NO: 2657 case DT_MIPS_DELTA_RELOC_NO: 2658 case DT_MIPS_DELTA_SYM_NO: 2659 case DT_MIPS_DELTA_CLASSSYM_NO: 2660 case DT_MIPS_LOCALPAGE_GOTIDX: 2661 case DT_MIPS_LOCAL_GOTIDX: 2662 case DT_MIPS_HIDDEN_GOTIDX: 2663 case DT_MIPS_PROTECTED_GOTIDX: 2664 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2665 break; 2666 case DT_MIPS_ICHECKSUM: 2667 case DT_MIPS_FLAGS: 2668 case DT_MIPS_BASE_ADDRESS: 2669 case DT_MIPS_CONFLICT: 2670 case DT_MIPS_LIBLIST: 2671 case DT_MIPS_RLD_MAP: 2672 case DT_MIPS_DELTA_CLASS: 2673 case DT_MIPS_DELTA_INSTANCE: 2674 case DT_MIPS_DELTA_RELOC: 2675 case DT_MIPS_DELTA_SYM: 2676 case DT_MIPS_DELTA_CLASSSYM: 2677 case DT_MIPS_CXX_FLAGS: 2678 case DT_MIPS_PIXIE_INIT: 2679 case DT_MIPS_SYMBOL_LIB: 2680 case DT_MIPS_OPTIONS: 2681 case DT_MIPS_INTERFACE: 2682 case DT_MIPS_DYNSTR_ALIGN: 2683 case DT_MIPS_INTERFACE_SIZE: 2684 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2685 case DT_MIPS_COMPACT_SIZE: 2686 case DT_MIPS_GP_VALUE: 2687 case DT_MIPS_AUX_DYNAMIC: 2688 case DT_MIPS_PLTGOT: 2689 case DT_MIPS_RLD_OBJ_UPDATE: 2690 case DT_MIPS_RWPLT: 2691 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2692 break; 2693 case DT_MIPS_IVERSION: 2694 case DT_MIPS_PERF_SUFFIX: 2695 case DT_MIPS_TIME_STAMP: 2696 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2697 break; 2698 default: 2699 printf("\n"); 2700 break; 2701 } 2702 break; 2703 default: 2704 printf("\n"); 2705 break; 2706 } 2707 } 2708 2709 static void 2710 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab) 2711 { 2712 const char *name; 2713 2714 if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC && 2715 dyn->d_tag != DT_AUXILIARY && dyn->d_tag != DT_FILTER) { 2716 dump_arch_dyn_val(re, dyn); 2717 return; 2718 } 2719 2720 /* These entry values are index into the string table. */ 2721 name = NULL; 2722 if (dyn->d_tag == DT_AUXILIARY || dyn->d_tag == DT_FILTER || 2723 dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME || 2724 dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH) 2725 name = dyn_str(re, stab, dyn->d_un.d_val); 2726 2727 switch(dyn->d_tag) { 2728 case DT_NULL: 2729 case DT_PLTGOT: 2730 case DT_HASH: 2731 case DT_STRTAB: 2732 case DT_SYMTAB: 2733 case DT_RELA: 2734 case DT_INIT: 2735 case DT_SYMBOLIC: 2736 case DT_REL: 2737 case DT_DEBUG: 2738 case DT_TEXTREL: 2739 case DT_JMPREL: 2740 case DT_FINI: 2741 case DT_VERDEF: 2742 case DT_VERNEED: 2743 case DT_VERSYM: 2744 case DT_GNU_HASH: 2745 case DT_GNU_LIBLIST: 2746 case DT_GNU_CONFLICT: 2747 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2748 break; 2749 case DT_PLTRELSZ: 2750 case DT_RELASZ: 2751 case DT_RELAENT: 2752 case DT_STRSZ: 2753 case DT_SYMENT: 2754 case DT_RELSZ: 2755 case DT_RELENT: 2756 case DT_INIT_ARRAYSZ: 2757 case DT_FINI_ARRAYSZ: 2758 case DT_GNU_CONFLICTSZ: 2759 case DT_GNU_LIBLISTSZ: 2760 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val); 2761 break; 2762 case DT_RELACOUNT: 2763 case DT_RELCOUNT: 2764 case DT_VERDEFNUM: 2765 case DT_VERNEEDNUM: 2766 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2767 break; 2768 case DT_AUXILIARY: 2769 printf(" Auxiliary library: [%s]\n", name); 2770 break; 2771 case DT_FILTER: 2772 printf(" Filter library: [%s]\n", name); 2773 break; 2774 case DT_NEEDED: 2775 printf(" Shared library: [%s]\n", name); 2776 break; 2777 case DT_SONAME: 2778 printf(" Library soname: [%s]\n", name); 2779 break; 2780 case DT_RPATH: 2781 printf(" Library rpath: [%s]\n", name); 2782 break; 2783 case DT_RUNPATH: 2784 printf(" Library runpath: [%s]\n", name); 2785 break; 2786 case DT_PLTREL: 2787 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val)); 2788 break; 2789 case DT_GNU_PRELINKED: 2790 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2791 break; 2792 default: 2793 printf("\n"); 2794 } 2795 } 2796 2797 static void 2798 dump_rel(struct readelf *re, struct section *s, Elf_Data *d) 2799 { 2800 GElf_Rel r; 2801 const char *symname; 2802 uint64_t symval; 2803 int i, len; 2804 uint32_t type; 2805 uint8_t type2, type3; 2806 2807 if (s->link >= re->shnum) 2808 return; 2809 2810 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name" 2811 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2812 elftc_reloc_type_str(re->ehdr.e_machine, \ 2813 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2814 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2815 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 2816 (uintmax_t)symval, symname 2817 2818 printf("\nRelocation section (%s):\n", s->name); 2819 if (re->ec == ELFCLASS32) 2820 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR); 2821 else { 2822 if (re->options & RE_WW) 2823 printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR); 2824 else 2825 printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR); 2826 } 2827 assert(d->d_size == s->sz); 2828 if (!get_ent_count(s, &len)) 2829 return; 2830 for (i = 0; i < len; i++) { 2831 if (gelf_getrel(d, i, &r) != &r) { 2832 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 2833 continue; 2834 } 2835 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 2836 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 2837 if (re->ec == ELFCLASS32) { 2838 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 2839 ELF64_R_TYPE(r.r_info)); 2840 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32); 2841 } else { 2842 type = ELF64_R_TYPE(r.r_info); 2843 if (re->ehdr.e_machine == EM_MIPS) { 2844 type2 = (type >> 8) & 0xFF; 2845 type3 = (type >> 16) & 0xFF; 2846 type = type & 0xFF; 2847 } else { 2848 type2 = type3 = 0; 2849 } 2850 if (re->options & RE_WW) 2851 printf("%16.16jx %16.16jx %-24.24s" 2852 " %16.16jx %s\n", REL_CT64); 2853 else 2854 printf("%12.12jx %12.12jx %-19.19s" 2855 " %16.16jx %s\n", REL_CT64); 2856 if (re->ehdr.e_machine == EM_MIPS) { 2857 if (re->options & RE_WW) { 2858 printf("%32s: %s\n", "Type2", 2859 elftc_reloc_type_str(EM_MIPS, 2860 type2)); 2861 printf("%32s: %s\n", "Type3", 2862 elftc_reloc_type_str(EM_MIPS, 2863 type3)); 2864 } else { 2865 printf("%24s: %s\n", "Type2", 2866 elftc_reloc_type_str(EM_MIPS, 2867 type2)); 2868 printf("%24s: %s\n", "Type3", 2869 elftc_reloc_type_str(EM_MIPS, 2870 type3)); 2871 } 2872 } 2873 } 2874 } 2875 2876 #undef REL_HDR 2877 #undef REL_CT 2878 } 2879 2880 static void 2881 dump_rela(struct readelf *re, struct section *s, Elf_Data *d) 2882 { 2883 GElf_Rela r; 2884 const char *symname; 2885 uint64_t symval; 2886 int i, len; 2887 uint32_t type; 2888 uint8_t type2, type3; 2889 2890 if (s->link >= re->shnum) 2891 return; 2892 2893 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \ 2894 "st_name + r_addend" 2895 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2896 elftc_reloc_type_str(re->ehdr.e_machine, \ 2897 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 2898 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 2899 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 2900 (uintmax_t)symval, symname 2901 2902 printf("\nRelocation section with addend (%s):\n", s->name); 2903 if (re->ec == ELFCLASS32) 2904 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR); 2905 else { 2906 if (re->options & RE_WW) 2907 printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR); 2908 else 2909 printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR); 2910 } 2911 assert(d->d_size == s->sz); 2912 if (!get_ent_count(s, &len)) 2913 return; 2914 for (i = 0; i < len; i++) { 2915 if (gelf_getrela(d, i, &r) != &r) { 2916 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 2917 continue; 2918 } 2919 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 2920 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 2921 if (re->ec == ELFCLASS32) { 2922 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 2923 ELF64_R_TYPE(r.r_info)); 2924 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32); 2925 printf(" + %x\n", (uint32_t) r.r_addend); 2926 } else { 2927 type = ELF64_R_TYPE(r.r_info); 2928 if (re->ehdr.e_machine == EM_MIPS) { 2929 type2 = (type >> 8) & 0xFF; 2930 type3 = (type >> 16) & 0xFF; 2931 type = type & 0xFF; 2932 } else { 2933 type2 = type3 = 0; 2934 } 2935 if (re->options & RE_WW) 2936 printf("%16.16jx %16.16jx %-24.24s" 2937 " %16.16jx %s", RELA_CT64); 2938 else 2939 printf("%12.12jx %12.12jx %-19.19s" 2940 " %16.16jx %s", RELA_CT64); 2941 printf(" + %jx\n", (uintmax_t) r.r_addend); 2942 if (re->ehdr.e_machine == EM_MIPS) { 2943 if (re->options & RE_WW) { 2944 printf("%32s: %s\n", "Type2", 2945 elftc_reloc_type_str(EM_MIPS, 2946 type2)); 2947 printf("%32s: %s\n", "Type3", 2948 elftc_reloc_type_str(EM_MIPS, 2949 type3)); 2950 } else { 2951 printf("%24s: %s\n", "Type2", 2952 elftc_reloc_type_str(EM_MIPS, 2953 type2)); 2954 printf("%24s: %s\n", "Type3", 2955 elftc_reloc_type_str(EM_MIPS, 2956 type3)); 2957 } 2958 } 2959 } 2960 } 2961 2962 #undef RELA_HDR 2963 #undef RELA_CT 2964 } 2965 2966 static void 2967 dump_reloc(struct readelf *re) 2968 { 2969 struct section *s; 2970 Elf_Data *d; 2971 int i, elferr; 2972 2973 for (i = 0; (size_t)i < re->shnum; i++) { 2974 s = &re->sl[i]; 2975 if (s->type == SHT_REL || s->type == SHT_RELA) { 2976 (void) elf_errno(); 2977 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2978 elferr = elf_errno(); 2979 if (elferr != 0) 2980 warnx("elf_getdata failed: %s", 2981 elf_errmsg(elferr)); 2982 continue; 2983 } 2984 if (s->type == SHT_REL) 2985 dump_rel(re, s, d); 2986 else 2987 dump_rela(re, s, d); 2988 } 2989 } 2990 } 2991 2992 static void 2993 dump_symtab(struct readelf *re, int i) 2994 { 2995 struct section *s; 2996 Elf_Data *d; 2997 GElf_Sym sym; 2998 const char *name; 2999 uint32_t stab; 3000 int elferr, j, len; 3001 uint16_t vs; 3002 3003 s = &re->sl[i]; 3004 if (s->link >= re->shnum) 3005 return; 3006 stab = s->link; 3007 (void) elf_errno(); 3008 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3009 elferr = elf_errno(); 3010 if (elferr != 0) 3011 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3012 return; 3013 } 3014 if (d->d_size <= 0) 3015 return; 3016 if (!get_ent_count(s, &len)) 3017 return; 3018 printf("Symbol table (%s)", s->name); 3019 printf(" contains %d entries:\n", len); 3020 printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type", 3021 "Bind", "Vis", "Ndx", "Name"); 3022 3023 for (j = 0; j < len; j++) { 3024 if (gelf_getsym(d, j, &sym) != &sym) { 3025 warnx("gelf_getsym failed: %s", elf_errmsg(-1)); 3026 continue; 3027 } 3028 printf("%6d:", j); 3029 printf(" %16.16jx", (uintmax_t) sym.st_value); 3030 printf(" %5ju", (uintmax_t) sym.st_size); 3031 printf(" %-7s", st_type(re->ehdr.e_machine, 3032 re->ehdr.e_ident[EI_OSABI], GELF_ST_TYPE(sym.st_info))); 3033 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info))); 3034 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other))); 3035 printf(" %3s", st_shndx(sym.st_shndx)); 3036 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL) 3037 printf(" %s", name); 3038 /* Append symbol version string for SHT_DYNSYM symbol table. */ 3039 if (s->type == SHT_DYNSYM && re->ver != NULL && 3040 re->vs != NULL && re->vs[j] > 1) { 3041 vs = re->vs[j] & VERSYM_VERSION; 3042 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3043 warnx("invalid versym version index %u", vs); 3044 break; 3045 } 3046 if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0) 3047 printf("@%s (%d)", re->ver[vs].name, vs); 3048 else 3049 printf("@@%s (%d)", re->ver[vs].name, vs); 3050 } 3051 putchar('\n'); 3052 } 3053 3054 } 3055 3056 static void 3057 dump_symtabs(struct readelf *re) 3058 { 3059 GElf_Dyn dyn; 3060 Elf_Data *d; 3061 struct section *s; 3062 uint64_t dyn_off; 3063 int elferr, i, len; 3064 3065 /* 3066 * If -D is specified, only dump the symbol table specified by 3067 * the DT_SYMTAB entry in the .dynamic section. 3068 */ 3069 dyn_off = 0; 3070 if (re->options & RE_DD) { 3071 s = NULL; 3072 for (i = 0; (size_t)i < re->shnum; i++) 3073 if (re->sl[i].type == SHT_DYNAMIC) { 3074 s = &re->sl[i]; 3075 break; 3076 } 3077 if (s == NULL) 3078 return; 3079 (void) elf_errno(); 3080 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3081 elferr = elf_errno(); 3082 if (elferr != 0) 3083 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 3084 return; 3085 } 3086 if (d->d_size <= 0) 3087 return; 3088 if (!get_ent_count(s, &len)) 3089 return; 3090 3091 for (i = 0; i < len; i++) { 3092 if (gelf_getdyn(d, i, &dyn) != &dyn) { 3093 warnx("gelf_getdyn failed: %s", elf_errmsg(-1)); 3094 continue; 3095 } 3096 if (dyn.d_tag == DT_SYMTAB) { 3097 dyn_off = dyn.d_un.d_val; 3098 break; 3099 } 3100 } 3101 } 3102 3103 /* Find and dump symbol tables. */ 3104 for (i = 0; (size_t)i < re->shnum; i++) { 3105 s = &re->sl[i]; 3106 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) { 3107 if (re->options & RE_DD) { 3108 if (dyn_off == s->addr) { 3109 dump_symtab(re, i); 3110 break; 3111 } 3112 } else 3113 dump_symtab(re, i); 3114 } 3115 } 3116 } 3117 3118 static void 3119 dump_svr4_hash(struct section *s) 3120 { 3121 Elf_Data *d; 3122 uint32_t *buf; 3123 uint32_t nbucket, nchain; 3124 uint32_t *bucket, *chain; 3125 uint32_t *bl, *c, maxl, total; 3126 int elferr, i, j; 3127 3128 /* Read and parse the content of .hash section. */ 3129 (void) elf_errno(); 3130 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3131 elferr = elf_errno(); 3132 if (elferr != 0) 3133 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3134 return; 3135 } 3136 if (d->d_size < 2 * sizeof(uint32_t)) { 3137 warnx(".hash section too small"); 3138 return; 3139 } 3140 buf = d->d_buf; 3141 nbucket = buf[0]; 3142 nchain = buf[1]; 3143 if (nbucket <= 0 || nchain <= 0) { 3144 warnx("Malformed .hash section"); 3145 return; 3146 } 3147 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3148 warnx("Malformed .hash section"); 3149 return; 3150 } 3151 bucket = &buf[2]; 3152 chain = &buf[2 + nbucket]; 3153 3154 maxl = 0; 3155 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3156 errx(EXIT_FAILURE, "calloc failed"); 3157 for (i = 0; (uint32_t)i < nbucket; i++) 3158 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3159 if (++bl[i] > maxl) 3160 maxl = bl[i]; 3161 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3162 errx(EXIT_FAILURE, "calloc failed"); 3163 for (i = 0; (uint32_t)i < nbucket; i++) 3164 c[bl[i]]++; 3165 printf("\nHistogram for bucket list length (total of %u buckets):\n", 3166 nbucket); 3167 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3168 total = 0; 3169 for (i = 0; (uint32_t)i <= maxl; i++) { 3170 total += c[i] * i; 3171 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3172 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3173 } 3174 free(c); 3175 free(bl); 3176 } 3177 3178 static void 3179 dump_svr4_hash64(struct readelf *re, struct section *s) 3180 { 3181 Elf_Data *d, dst; 3182 uint64_t *buf; 3183 uint64_t nbucket, nchain; 3184 uint64_t *bucket, *chain; 3185 uint64_t *bl, *c, maxl, total; 3186 int elferr, i, j; 3187 3188 /* 3189 * ALPHA uses 64-bit hash entries. Since libelf assumes that 3190 * .hash section contains only 32-bit entry, an explicit 3191 * gelf_xlatetom is needed here. 3192 */ 3193 (void) elf_errno(); 3194 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 3195 elferr = elf_errno(); 3196 if (elferr != 0) 3197 warnx("elf_rawdata failed: %s", 3198 elf_errmsg(elferr)); 3199 return; 3200 } 3201 d->d_type = ELF_T_XWORD; 3202 memcpy(&dst, d, sizeof(Elf_Data)); 3203 if (gelf_xlatetom(re->elf, &dst, d, 3204 re->ehdr.e_ident[EI_DATA]) != &dst) { 3205 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1)); 3206 return; 3207 } 3208 if (dst.d_size < 2 * sizeof(uint64_t)) { 3209 warnx(".hash section too small"); 3210 return; 3211 } 3212 buf = dst.d_buf; 3213 nbucket = buf[0]; 3214 nchain = buf[1]; 3215 if (nbucket <= 0 || nchain <= 0) { 3216 warnx("Malformed .hash section"); 3217 return; 3218 } 3219 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3220 warnx("Malformed .hash section"); 3221 return; 3222 } 3223 bucket = &buf[2]; 3224 chain = &buf[2 + nbucket]; 3225 3226 maxl = 0; 3227 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3228 errx(EXIT_FAILURE, "calloc failed"); 3229 for (i = 0; (uint32_t)i < nbucket; i++) 3230 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3231 if (++bl[i] > maxl) 3232 maxl = bl[i]; 3233 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3234 errx(EXIT_FAILURE, "calloc failed"); 3235 for (i = 0; (uint64_t)i < nbucket; i++) 3236 c[bl[i]]++; 3237 printf("Histogram for bucket list length (total of %ju buckets):\n", 3238 (uintmax_t)nbucket); 3239 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3240 total = 0; 3241 for (i = 0; (uint64_t)i <= maxl; i++) { 3242 total += c[i] * i; 3243 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i], 3244 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3245 } 3246 free(c); 3247 free(bl); 3248 } 3249 3250 static void 3251 dump_gnu_hash(struct readelf *re, struct section *s) 3252 { 3253 struct section *ds; 3254 Elf_Data *d; 3255 uint32_t *buf; 3256 uint32_t *bucket, *chain; 3257 uint32_t nbucket, nchain, symndx, maskwords; 3258 uint32_t *bl, *c, maxl, total; 3259 int elferr, dynsymcount, i, j; 3260 3261 (void) elf_errno(); 3262 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3263 elferr = elf_errno(); 3264 if (elferr != 0) 3265 warnx("elf_getdata failed: %s", 3266 elf_errmsg(elferr)); 3267 return; 3268 } 3269 if (d->d_size < 4 * sizeof(uint32_t)) { 3270 warnx(".gnu.hash section too small"); 3271 return; 3272 } 3273 buf = d->d_buf; 3274 nbucket = buf[0]; 3275 symndx = buf[1]; 3276 maskwords = buf[2]; 3277 buf += 4; 3278 if (s->link >= re->shnum) 3279 return; 3280 ds = &re->sl[s->link]; 3281 if (!get_ent_count(ds, &dynsymcount)) 3282 return; 3283 if (symndx >= (uint32_t)dynsymcount) { 3284 warnx("Malformed .gnu.hash section (symndx out of range)"); 3285 return; 3286 } 3287 nchain = dynsymcount - symndx; 3288 if (d->d_size != 4 * sizeof(uint32_t) + maskwords * 3289 (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) + 3290 (nbucket + nchain) * sizeof(uint32_t)) { 3291 warnx("Malformed .gnu.hash section"); 3292 return; 3293 } 3294 bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2); 3295 chain = bucket + nbucket; 3296 3297 maxl = 0; 3298 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3299 errx(EXIT_FAILURE, "calloc failed"); 3300 for (i = 0; (uint32_t)i < nbucket; i++) 3301 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain; 3302 j++) { 3303 if (++bl[i] > maxl) 3304 maxl = bl[i]; 3305 if (chain[j - symndx] & 1) 3306 break; 3307 } 3308 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3309 errx(EXIT_FAILURE, "calloc failed"); 3310 for (i = 0; (uint32_t)i < nbucket; i++) 3311 c[bl[i]]++; 3312 printf("Histogram for bucket list length (total of %u buckets):\n", 3313 nbucket); 3314 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3315 total = 0; 3316 for (i = 0; (uint32_t)i <= maxl; i++) { 3317 total += c[i] * i; 3318 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3319 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3320 } 3321 free(c); 3322 free(bl); 3323 } 3324 3325 static void 3326 dump_hash(struct readelf *re) 3327 { 3328 struct section *s; 3329 int i; 3330 3331 for (i = 0; (size_t) i < re->shnum; i++) { 3332 s = &re->sl[i]; 3333 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) { 3334 if (s->type == SHT_GNU_HASH) 3335 dump_gnu_hash(re, s); 3336 else if (re->ehdr.e_machine == EM_ALPHA && 3337 s->entsize == 8) 3338 dump_svr4_hash64(re, s); 3339 else 3340 dump_svr4_hash(s); 3341 } 3342 } 3343 } 3344 3345 static void 3346 dump_notes(struct readelf *re) 3347 { 3348 struct section *s; 3349 const char *rawfile; 3350 GElf_Phdr phdr; 3351 Elf_Data *d; 3352 size_t filesize, phnum; 3353 int i, elferr; 3354 3355 if (re->ehdr.e_type == ET_CORE) { 3356 /* 3357 * Search program headers in the core file for 3358 * PT_NOTE entry. 3359 */ 3360 if (elf_getphnum(re->elf, &phnum) == 0) { 3361 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 3362 return; 3363 } 3364 if (phnum == 0) 3365 return; 3366 if ((rawfile = elf_rawfile(re->elf, &filesize)) == NULL) { 3367 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 3368 return; 3369 } 3370 for (i = 0; (size_t) i < phnum; i++) { 3371 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 3372 warnx("gelf_getphdr failed: %s", 3373 elf_errmsg(-1)); 3374 continue; 3375 } 3376 if (phdr.p_type == PT_NOTE) { 3377 if (phdr.p_offset >= filesize || 3378 phdr.p_filesz > filesize - phdr.p_offset) { 3379 warnx("invalid PHDR offset"); 3380 continue; 3381 } 3382 dump_notes_content(re, rawfile + phdr.p_offset, 3383 phdr.p_filesz, phdr.p_offset); 3384 } 3385 } 3386 3387 } else { 3388 /* 3389 * For objects other than core files, Search for 3390 * SHT_NOTE sections. 3391 */ 3392 for (i = 0; (size_t) i < re->shnum; i++) { 3393 s = &re->sl[i]; 3394 if (s->type == SHT_NOTE) { 3395 (void) elf_errno(); 3396 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3397 elferr = elf_errno(); 3398 if (elferr != 0) 3399 warnx("elf_getdata failed: %s", 3400 elf_errmsg(elferr)); 3401 continue; 3402 } 3403 dump_notes_content(re, d->d_buf, d->d_size, 3404 s->off); 3405 } 3406 } 3407 } 3408 } 3409 3410 static void 3411 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off) 3412 { 3413 Elf_Note *note; 3414 const char *end, *name; 3415 3416 printf("\nNotes at offset %#010jx with length %#010jx:\n", 3417 (uintmax_t) off, (uintmax_t) sz); 3418 printf(" %-13s %-15s %s\n", "Owner", "Data size", "Description"); 3419 end = buf + sz; 3420 while (buf < end) { 3421 if (buf + sizeof(*note) > end) { 3422 warnx("invalid note header"); 3423 return; 3424 } 3425 note = (Elf_Note *)(uintptr_t) buf; 3426 name = (char *)(uintptr_t)(note + 1); 3427 /* 3428 * The name field is required to be nul-terminated, and 3429 * n_namesz includes the terminating nul in observed 3430 * implementations (contrary to the ELF-64 spec). A special 3431 * case is needed for cores generated by some older Linux 3432 * versions, which write a note named "CORE" without a nul 3433 * terminator and n_namesz = 4. 3434 */ 3435 if (note->n_namesz == 0) 3436 name = ""; 3437 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0) 3438 name = "CORE"; 3439 else if (strnlen(name, note->n_namesz) >= note->n_namesz) 3440 name = "<invalid>"; 3441 printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz); 3442 printf(" %s\n", note_type(name, re->ehdr.e_type, 3443 note->n_type)); 3444 buf += sizeof(Elf_Note) + roundup2(note->n_namesz, 4) + 3445 roundup2(note->n_descsz, 4); 3446 } 3447 } 3448 3449 /* 3450 * Symbol versioning sections are the same for 32bit and 64bit 3451 * ELF objects. 3452 */ 3453 #define Elf_Verdef Elf32_Verdef 3454 #define Elf_Verdaux Elf32_Verdaux 3455 #define Elf_Verneed Elf32_Verneed 3456 #define Elf_Vernaux Elf32_Vernaux 3457 3458 #define SAVE_VERSION_NAME(x, n, t) \ 3459 do { \ 3460 while (x >= re->ver_sz) { \ 3461 nv = realloc(re->ver, \ 3462 sizeof(*re->ver) * re->ver_sz * 2); \ 3463 if (nv == NULL) { \ 3464 warn("realloc failed"); \ 3465 free(re->ver); \ 3466 return; \ 3467 } \ 3468 re->ver = nv; \ 3469 for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \ 3470 re->ver[i].name = NULL; \ 3471 re->ver[i].type = 0; \ 3472 } \ 3473 re->ver_sz *= 2; \ 3474 } \ 3475 if (x > 1) { \ 3476 re->ver[x].name = n; \ 3477 re->ver[x].type = t; \ 3478 } \ 3479 } while (0) 3480 3481 3482 static void 3483 dump_verdef(struct readelf *re, int dump) 3484 { 3485 struct section *s; 3486 struct symver *nv; 3487 Elf_Data *d; 3488 Elf_Verdef *vd; 3489 Elf_Verdaux *vda; 3490 uint8_t *buf, *end, *buf2; 3491 const char *name; 3492 int elferr, i, j; 3493 3494 if ((s = re->vd_s) == NULL) 3495 return; 3496 if (s->link >= re->shnum) 3497 return; 3498 3499 if (re->ver == NULL) { 3500 re->ver_sz = 16; 3501 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3502 NULL) { 3503 warn("calloc failed"); 3504 return; 3505 } 3506 re->ver[0].name = "*local*"; 3507 re->ver[1].name = "*global*"; 3508 } 3509 3510 if (dump) 3511 printf("\nVersion definition section (%s):\n", s->name); 3512 (void) elf_errno(); 3513 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3514 elferr = elf_errno(); 3515 if (elferr != 0) 3516 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3517 return; 3518 } 3519 if (d->d_size == 0) 3520 return; 3521 3522 buf = d->d_buf; 3523 end = buf + d->d_size; 3524 while (buf + sizeof(Elf_Verdef) <= end) { 3525 vd = (Elf_Verdef *) (uintptr_t) buf; 3526 if (dump) { 3527 printf(" 0x%4.4lx", (unsigned long) 3528 (buf - (uint8_t *)d->d_buf)); 3529 printf(" vd_version: %u vd_flags: %d" 3530 " vd_ndx: %u vd_cnt: %u", vd->vd_version, 3531 vd->vd_flags, vd->vd_ndx, vd->vd_cnt); 3532 } 3533 buf2 = buf + vd->vd_aux; 3534 j = 0; 3535 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) { 3536 vda = (Elf_Verdaux *) (uintptr_t) buf2; 3537 name = get_string(re, s->link, vda->vda_name); 3538 if (j == 0) { 3539 if (dump) 3540 printf(" vda_name: %s\n", name); 3541 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1); 3542 } else if (dump) 3543 printf(" 0x%4.4lx parent: %s\n", 3544 (unsigned long) (buf2 - 3545 (uint8_t *)d->d_buf), name); 3546 if (vda->vda_next == 0) 3547 break; 3548 buf2 += vda->vda_next; 3549 j++; 3550 } 3551 if (vd->vd_next == 0) 3552 break; 3553 buf += vd->vd_next; 3554 } 3555 } 3556 3557 static void 3558 dump_verneed(struct readelf *re, int dump) 3559 { 3560 struct section *s; 3561 struct symver *nv; 3562 Elf_Data *d; 3563 Elf_Verneed *vn; 3564 Elf_Vernaux *vna; 3565 uint8_t *buf, *end, *buf2; 3566 const char *name; 3567 int elferr, i, j; 3568 3569 if ((s = re->vn_s) == NULL) 3570 return; 3571 if (s->link >= re->shnum) 3572 return; 3573 3574 if (re->ver == NULL) { 3575 re->ver_sz = 16; 3576 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3577 NULL) { 3578 warn("calloc failed"); 3579 return; 3580 } 3581 re->ver[0].name = "*local*"; 3582 re->ver[1].name = "*global*"; 3583 } 3584 3585 if (dump) 3586 printf("\nVersion needed section (%s):\n", s->name); 3587 (void) elf_errno(); 3588 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3589 elferr = elf_errno(); 3590 if (elferr != 0) 3591 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3592 return; 3593 } 3594 if (d->d_size == 0) 3595 return; 3596 3597 buf = d->d_buf; 3598 end = buf + d->d_size; 3599 while (buf + sizeof(Elf_Verneed) <= end) { 3600 vn = (Elf_Verneed *) (uintptr_t) buf; 3601 if (dump) { 3602 printf(" 0x%4.4lx", (unsigned long) 3603 (buf - (uint8_t *)d->d_buf)); 3604 printf(" vn_version: %u vn_file: %s vn_cnt: %u\n", 3605 vn->vn_version, 3606 get_string(re, s->link, vn->vn_file), 3607 vn->vn_cnt); 3608 } 3609 buf2 = buf + vn->vn_aux; 3610 j = 0; 3611 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) { 3612 vna = (Elf32_Vernaux *) (uintptr_t) buf2; 3613 if (dump) 3614 printf(" 0x%4.4lx", (unsigned long) 3615 (buf2 - (uint8_t *)d->d_buf)); 3616 name = get_string(re, s->link, vna->vna_name); 3617 if (dump) 3618 printf(" vna_name: %s vna_flags: %u" 3619 " vna_other: %u\n", name, 3620 vna->vna_flags, vna->vna_other); 3621 SAVE_VERSION_NAME((int)vna->vna_other, name, 0); 3622 if (vna->vna_next == 0) 3623 break; 3624 buf2 += vna->vna_next; 3625 j++; 3626 } 3627 if (vn->vn_next == 0) 3628 break; 3629 buf += vn->vn_next; 3630 } 3631 } 3632 3633 static void 3634 dump_versym(struct readelf *re) 3635 { 3636 int i; 3637 uint16_t vs; 3638 3639 if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL) 3640 return; 3641 printf("\nVersion symbol section (%s):\n", re->vs_s->name); 3642 for (i = 0; i < re->vs_sz; i++) { 3643 if ((i & 3) == 0) { 3644 if (i > 0) 3645 putchar('\n'); 3646 printf(" %03x:", i); 3647 } 3648 vs = re->vs[i] & VERSYM_VERSION; 3649 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3650 warnx("invalid versym version index %u", re->vs[i]); 3651 break; 3652 } 3653 if (re->vs[i] & VERSYM_HIDDEN) 3654 printf(" %3xh %-12s ", vs, 3655 re->ver[re->vs[i] & VERSYM_VERSION].name); 3656 else 3657 printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name); 3658 } 3659 putchar('\n'); 3660 } 3661 3662 static void 3663 dump_ver(struct readelf *re) 3664 { 3665 3666 if (re->vs_s && re->ver && re->vs) 3667 dump_versym(re); 3668 if (re->vd_s) 3669 dump_verdef(re, 1); 3670 if (re->vn_s) 3671 dump_verneed(re, 1); 3672 } 3673 3674 static void 3675 search_ver(struct readelf *re) 3676 { 3677 struct section *s; 3678 Elf_Data *d; 3679 int elferr, i; 3680 3681 for (i = 0; (size_t) i < re->shnum; i++) { 3682 s = &re->sl[i]; 3683 if (s->type == SHT_SUNW_versym) 3684 re->vs_s = s; 3685 if (s->type == SHT_SUNW_verneed) 3686 re->vn_s = s; 3687 if (s->type == SHT_SUNW_verdef) 3688 re->vd_s = s; 3689 } 3690 if (re->vd_s) 3691 dump_verdef(re, 0); 3692 if (re->vn_s) 3693 dump_verneed(re, 0); 3694 if (re->vs_s && re->ver != NULL) { 3695 (void) elf_errno(); 3696 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) { 3697 elferr = elf_errno(); 3698 if (elferr != 0) 3699 warnx("elf_getdata failed: %s", 3700 elf_errmsg(elferr)); 3701 return; 3702 } 3703 if (d->d_size == 0) 3704 return; 3705 re->vs = d->d_buf; 3706 re->vs_sz = d->d_size / sizeof(Elf32_Half); 3707 } 3708 } 3709 3710 #undef Elf_Verdef 3711 #undef Elf_Verdaux 3712 #undef Elf_Verneed 3713 #undef Elf_Vernaux 3714 #undef SAVE_VERSION_NAME 3715 3716 /* 3717 * Elf32_Lib and Elf64_Lib are identical. 3718 */ 3719 #define Elf_Lib Elf32_Lib 3720 3721 static void 3722 dump_liblist(struct readelf *re) 3723 { 3724 struct section *s; 3725 struct tm *t; 3726 time_t ti; 3727 char tbuf[20]; 3728 Elf_Data *d; 3729 Elf_Lib *lib; 3730 int i, j, k, elferr, first, len; 3731 3732 for (i = 0; (size_t) i < re->shnum; i++) { 3733 s = &re->sl[i]; 3734 if (s->type != SHT_GNU_LIBLIST) 3735 continue; 3736 if (s->link >= re->shnum) 3737 continue; 3738 (void) elf_errno(); 3739 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3740 elferr = elf_errno(); 3741 if (elferr != 0) 3742 warnx("elf_getdata failed: %s", 3743 elf_errmsg(elferr)); 3744 continue; 3745 } 3746 if (d->d_size <= 0) 3747 continue; 3748 lib = d->d_buf; 3749 if (!get_ent_count(s, &len)) 3750 continue; 3751 printf("\nLibrary list section '%s' ", s->name); 3752 printf("contains %d entries:\n", len); 3753 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp", 3754 "Checksum", "Version", "Flags"); 3755 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) { 3756 printf("%3d: ", j); 3757 printf("%-20.20s ", 3758 get_string(re, s->link, lib->l_name)); 3759 ti = lib->l_time_stamp; 3760 t = gmtime(&ti); 3761 snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d" 3762 ":%2d", t->tm_year + 1900, t->tm_mon + 1, 3763 t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec); 3764 printf("%-19.19s ", tbuf); 3765 printf("0x%08x ", lib->l_checksum); 3766 printf("%-7d %#x", lib->l_version, lib->l_flags); 3767 if (lib->l_flags != 0) { 3768 first = 1; 3769 putchar('('); 3770 for (k = 0; l_flag[k].name != NULL; k++) { 3771 if ((l_flag[k].value & lib->l_flags) == 3772 0) 3773 continue; 3774 if (!first) 3775 putchar(','); 3776 else 3777 first = 0; 3778 printf("%s", l_flag[k].name); 3779 } 3780 putchar(')'); 3781 } 3782 putchar('\n'); 3783 lib++; 3784 } 3785 } 3786 } 3787 3788 #undef Elf_Lib 3789 3790 static void 3791 dump_section_groups(struct readelf *re) 3792 { 3793 struct section *s; 3794 const char *symname; 3795 Elf_Data *d; 3796 uint32_t *w; 3797 int i, j, elferr; 3798 size_t n; 3799 3800 for (i = 0; (size_t) i < re->shnum; i++) { 3801 s = &re->sl[i]; 3802 if (s->type != SHT_GROUP) 3803 continue; 3804 if (s->link >= re->shnum) 3805 continue; 3806 (void) elf_errno(); 3807 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3808 elferr = elf_errno(); 3809 if (elferr != 0) 3810 warnx("elf_getdata failed: %s", 3811 elf_errmsg(elferr)); 3812 continue; 3813 } 3814 if (d->d_size <= 0) 3815 continue; 3816 3817 w = d->d_buf; 3818 3819 /* We only support COMDAT section. */ 3820 #ifndef GRP_COMDAT 3821 #define GRP_COMDAT 0x1 3822 #endif 3823 if ((*w++ & GRP_COMDAT) == 0) 3824 return; 3825 3826 if (s->entsize == 0) 3827 s->entsize = 4; 3828 3829 symname = get_symbol_name(re, s->link, s->info); 3830 n = s->sz / s->entsize; 3831 if (n-- < 1) 3832 return; 3833 3834 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju" 3835 " sections:\n", i, s->name, symname, (uintmax_t)n); 3836 printf(" %-10.10s %s\n", "[Index]", "Name"); 3837 for (j = 0; (size_t) j < n; j++, w++) { 3838 if (*w >= re->shnum) { 3839 warnx("invalid section index: %u", *w); 3840 continue; 3841 } 3842 printf(" [%5u] %s\n", *w, re->sl[*w].name); 3843 } 3844 } 3845 } 3846 3847 static uint8_t * 3848 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe) 3849 { 3850 uint64_t val; 3851 3852 /* 3853 * According to ARM EABI: For tags > 32, even numbered tags have 3854 * a ULEB128 param and odd numbered ones have NUL-terminated 3855 * string param. This rule probably also applies for tags <= 32 3856 * if the object arch is not ARM. 3857 */ 3858 3859 printf(" Tag_unknown_%ju: ", (uintmax_t) tag); 3860 3861 if (tag & 1) { 3862 printf("%s\n", (char *) p); 3863 p += strlen((char *) p) + 1; 3864 } else { 3865 val = _decode_uleb128(&p, pe); 3866 printf("%ju\n", (uintmax_t) val); 3867 } 3868 3869 return (p); 3870 } 3871 3872 static uint8_t * 3873 dump_compatibility_tag(uint8_t *p, uint8_t *pe) 3874 { 3875 uint64_t val; 3876 3877 val = _decode_uleb128(&p, pe); 3878 printf("flag = %ju, vendor = %s\n", (uintmax_t) val, p); 3879 p += strlen((char *) p) + 1; 3880 3881 return (p); 3882 } 3883 3884 static void 3885 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 3886 { 3887 uint64_t tag, val; 3888 size_t i; 3889 int found, desc; 3890 3891 (void) re; 3892 3893 while (p < pe) { 3894 tag = _decode_uleb128(&p, pe); 3895 found = desc = 0; 3896 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]); 3897 i++) { 3898 if (tag == aeabi_tags[i].tag) { 3899 found = 1; 3900 printf(" %s: ", aeabi_tags[i].s_tag); 3901 if (aeabi_tags[i].get_desc) { 3902 desc = 1; 3903 val = _decode_uleb128(&p, pe); 3904 printf("%s\n", 3905 aeabi_tags[i].get_desc(val)); 3906 } 3907 break; 3908 } 3909 if (tag < aeabi_tags[i].tag) 3910 break; 3911 } 3912 if (!found) { 3913 p = dump_unknown_tag(tag, p, pe); 3914 continue; 3915 } 3916 if (desc) 3917 continue; 3918 3919 switch (tag) { 3920 case 4: /* Tag_CPU_raw_name */ 3921 case 5: /* Tag_CPU_name */ 3922 case 67: /* Tag_conformance */ 3923 printf("%s\n", (char *) p); 3924 p += strlen((char *) p) + 1; 3925 break; 3926 case 32: /* Tag_compatibility */ 3927 p = dump_compatibility_tag(p, pe); 3928 break; 3929 case 64: /* Tag_nodefaults */ 3930 /* ignored, written as 0. */ 3931 (void) _decode_uleb128(&p, pe); 3932 printf("True\n"); 3933 break; 3934 case 65: /* Tag_also_compatible_with */ 3935 val = _decode_uleb128(&p, pe); 3936 /* Must be Tag_CPU_arch */ 3937 if (val != 6) { 3938 printf("unknown\n"); 3939 break; 3940 } 3941 val = _decode_uleb128(&p, pe); 3942 printf("%s\n", aeabi_cpu_arch(val)); 3943 /* Skip NUL terminator. */ 3944 p++; 3945 break; 3946 default: 3947 putchar('\n'); 3948 break; 3949 } 3950 } 3951 } 3952 3953 #ifndef Tag_GNU_MIPS_ABI_FP 3954 #define Tag_GNU_MIPS_ABI_FP 4 3955 #endif 3956 3957 static void 3958 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 3959 { 3960 uint64_t tag, val; 3961 3962 (void) re; 3963 3964 while (p < pe) { 3965 tag = _decode_uleb128(&p, pe); 3966 switch (tag) { 3967 case Tag_GNU_MIPS_ABI_FP: 3968 val = _decode_uleb128(&p, pe); 3969 printf(" Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val)); 3970 break; 3971 case 32: /* Tag_compatibility */ 3972 p = dump_compatibility_tag(p, pe); 3973 break; 3974 default: 3975 p = dump_unknown_tag(tag, p, pe); 3976 break; 3977 } 3978 } 3979 } 3980 3981 #ifndef Tag_GNU_Power_ABI_FP 3982 #define Tag_GNU_Power_ABI_FP 4 3983 #endif 3984 3985 #ifndef Tag_GNU_Power_ABI_Vector 3986 #define Tag_GNU_Power_ABI_Vector 8 3987 #endif 3988 3989 static void 3990 dump_ppc_attributes(uint8_t *p, uint8_t *pe) 3991 { 3992 uint64_t tag, val; 3993 3994 while (p < pe) { 3995 tag = _decode_uleb128(&p, pe); 3996 switch (tag) { 3997 case Tag_GNU_Power_ABI_FP: 3998 val = _decode_uleb128(&p, pe); 3999 printf(" Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val)); 4000 break; 4001 case Tag_GNU_Power_ABI_Vector: 4002 val = _decode_uleb128(&p, pe); 4003 printf(" Tag_GNU_Power_ABI_Vector: %s\n", 4004 ppc_abi_vector(val)); 4005 break; 4006 case 32: /* Tag_compatibility */ 4007 p = dump_compatibility_tag(p, pe); 4008 break; 4009 default: 4010 p = dump_unknown_tag(tag, p, pe); 4011 break; 4012 } 4013 } 4014 } 4015 4016 static void 4017 dump_attributes(struct readelf *re) 4018 { 4019 struct section *s; 4020 Elf_Data *d; 4021 uint8_t *p, *pe, *sp; 4022 size_t len, seclen, nlen, sublen; 4023 uint64_t val; 4024 int tag, i, elferr; 4025 4026 for (i = 0; (size_t) i < re->shnum; i++) { 4027 s = &re->sl[i]; 4028 if (s->type != SHT_GNU_ATTRIBUTES && 4029 (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3)) 4030 continue; 4031 (void) elf_errno(); 4032 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4033 elferr = elf_errno(); 4034 if (elferr != 0) 4035 warnx("elf_rawdata failed: %s", 4036 elf_errmsg(elferr)); 4037 continue; 4038 } 4039 if (d->d_size <= 0) 4040 continue; 4041 p = d->d_buf; 4042 pe = p + d->d_size; 4043 if (*p != 'A') { 4044 printf("Unknown Attribute Section Format: %c\n", 4045 (char) *p); 4046 continue; 4047 } 4048 len = d->d_size - 1; 4049 p++; 4050 while (len > 0) { 4051 if (len < 4) { 4052 warnx("truncated attribute section length"); 4053 return; 4054 } 4055 seclen = re->dw_decode(&p, 4); 4056 if (seclen > len) { 4057 warnx("invalid attribute section length"); 4058 return; 4059 } 4060 len -= seclen; 4061 nlen = strlen((char *) p) + 1; 4062 if (nlen + 4 > seclen) { 4063 warnx("invalid attribute section name"); 4064 return; 4065 } 4066 printf("Attribute Section: %s\n", (char *) p); 4067 p += nlen; 4068 seclen -= nlen + 4; 4069 while (seclen > 0) { 4070 sp = p; 4071 tag = *p++; 4072 sublen = re->dw_decode(&p, 4); 4073 if (sublen > seclen) { 4074 warnx("invalid attribute sub-section" 4075 " length"); 4076 return; 4077 } 4078 seclen -= sublen; 4079 printf("%s", top_tag(tag)); 4080 if (tag == 2 || tag == 3) { 4081 putchar(':'); 4082 for (;;) { 4083 val = _decode_uleb128(&p, pe); 4084 if (val == 0) 4085 break; 4086 printf(" %ju", (uintmax_t) val); 4087 } 4088 } 4089 putchar('\n'); 4090 if (re->ehdr.e_machine == EM_ARM && 4091 s->type == SHT_LOPROC + 3) 4092 dump_arm_attributes(re, p, sp + sublen); 4093 else if (re->ehdr.e_machine == EM_MIPS || 4094 re->ehdr.e_machine == EM_MIPS_RS3_LE) 4095 dump_mips_attributes(re, p, 4096 sp + sublen); 4097 else if (re->ehdr.e_machine == EM_PPC) 4098 dump_ppc_attributes(p, sp + sublen); 4099 p = sp + sublen; 4100 } 4101 } 4102 } 4103 } 4104 4105 static void 4106 dump_mips_specific_info(struct readelf *re) 4107 { 4108 struct section *s; 4109 int i; 4110 4111 s = NULL; 4112 for (i = 0; (size_t) i < re->shnum; i++) { 4113 s = &re->sl[i]; 4114 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") || 4115 (s->type == SHT_MIPS_OPTIONS))) { 4116 dump_mips_options(re, s); 4117 } 4118 } 4119 4120 if (s->name != NULL && (!strcmp(s->name, ".MIPS.abiflags") || 4121 (s->type == SHT_MIPS_ABIFLAGS))) 4122 dump_mips_abiflags(re, s); 4123 4124 /* 4125 * Dump .reginfo if present (although it will be ignored by an OS if a 4126 * .MIPS.options section is present, according to SGI mips64 spec). 4127 */ 4128 for (i = 0; (size_t) i < re->shnum; i++) { 4129 s = &re->sl[i]; 4130 if (s->name != NULL && (!strcmp(s->name, ".reginfo") || 4131 (s->type == SHT_MIPS_REGINFO))) 4132 dump_mips_reginfo(re, s); 4133 } 4134 } 4135 4136 static void 4137 dump_mips_abiflags(struct readelf *re, struct section *s) 4138 { 4139 Elf_Data *d; 4140 uint8_t *p; 4141 int elferr; 4142 uint32_t isa_ext, ases, flags1, flags2; 4143 uint16_t version; 4144 uint8_t isa_level, isa_rev, gpr_size, cpr1_size, cpr2_size, fp_abi; 4145 4146 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4147 elferr = elf_errno(); 4148 if (elferr != 0) 4149 warnx("elf_rawdata failed: %s", 4150 elf_errmsg(elferr)); 4151 return; 4152 } 4153 if (d->d_size != 24) { 4154 warnx("invalid MIPS abiflags section size"); 4155 return; 4156 } 4157 4158 p = d->d_buf; 4159 version = re->dw_decode(&p, 2); 4160 printf("MIPS ABI Flags Version: %u", version); 4161 if (version != 0) { 4162 printf(" (unknown)\n\n"); 4163 return; 4164 } 4165 printf("\n\n"); 4166 4167 isa_level = re->dw_decode(&p, 1); 4168 isa_rev = re->dw_decode(&p, 1); 4169 gpr_size = re->dw_decode(&p, 1); 4170 cpr1_size = re->dw_decode(&p, 1); 4171 cpr2_size = re->dw_decode(&p, 1); 4172 fp_abi = re->dw_decode(&p, 1); 4173 isa_ext = re->dw_decode(&p, 4); 4174 ases = re->dw_decode(&p, 4); 4175 flags1 = re->dw_decode(&p, 4); 4176 flags2 = re->dw_decode(&p, 4); 4177 4178 printf("ISA: "); 4179 if (isa_rev <= 1) 4180 printf("MIPS%u\n", isa_level); 4181 else 4182 printf("MIPS%ur%u\n", isa_level, isa_rev); 4183 printf("GPR size: %d\n", get_mips_register_size(gpr_size)); 4184 printf("CPR1 size: %d\n", get_mips_register_size(cpr1_size)); 4185 printf("CPR2 size: %d\n", get_mips_register_size(cpr2_size)); 4186 printf("FP ABI: "); 4187 switch (fp_abi) { 4188 case 3: 4189 printf("Soft float"); 4190 break; 4191 default: 4192 printf("%u", fp_abi); 4193 break; 4194 } 4195 printf("\nISA Extension: %u\n", isa_ext); 4196 printf("ASEs: %u\n", ases); 4197 printf("FLAGS 1: %08x\n", flags1); 4198 printf("FLAGS 2: %08x\n", flags2); 4199 } 4200 4201 static int 4202 get_mips_register_size(uint8_t flag) 4203 { 4204 switch (flag) { 4205 case 0: return 0; 4206 case 1: return 32; 4207 case 2: return 64; 4208 case 3: return 128; 4209 default: return -1; 4210 } 4211 } 4212 static void 4213 dump_mips_reginfo(struct readelf *re, struct section *s) 4214 { 4215 Elf_Data *d; 4216 int elferr, len; 4217 4218 (void) elf_errno(); 4219 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4220 elferr = elf_errno(); 4221 if (elferr != 0) 4222 warnx("elf_rawdata failed: %s", 4223 elf_errmsg(elferr)); 4224 return; 4225 } 4226 if (d->d_size <= 0) 4227 return; 4228 if (!get_ent_count(s, &len)) 4229 return; 4230 4231 printf("\nSection '%s' contains %d entries:\n", s->name, len); 4232 dump_mips_odk_reginfo(re, d->d_buf, d->d_size); 4233 } 4234 4235 static void 4236 dump_mips_options(struct readelf *re, struct section *s) 4237 { 4238 Elf_Data *d; 4239 uint32_t info; 4240 uint16_t sndx; 4241 uint8_t *p, *pe; 4242 uint8_t kind, size; 4243 int elferr; 4244 4245 (void) elf_errno(); 4246 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4247 elferr = elf_errno(); 4248 if (elferr != 0) 4249 warnx("elf_rawdata failed: %s", 4250 elf_errmsg(elferr)); 4251 return; 4252 } 4253 if (d->d_size == 0) 4254 return; 4255 4256 printf("\nSection %s contains:\n", s->name); 4257 p = d->d_buf; 4258 pe = p + d->d_size; 4259 while (p < pe) { 4260 if (pe - p < 8) { 4261 warnx("Truncated MIPS option header"); 4262 return; 4263 } 4264 kind = re->dw_decode(&p, 1); 4265 size = re->dw_decode(&p, 1); 4266 sndx = re->dw_decode(&p, 2); 4267 info = re->dw_decode(&p, 4); 4268 if (size < 8 || size - 8 > pe - p) { 4269 warnx("Malformed MIPS option header"); 4270 return; 4271 } 4272 size -= 8; 4273 switch (kind) { 4274 case ODK_REGINFO: 4275 dump_mips_odk_reginfo(re, p, size); 4276 break; 4277 case ODK_EXCEPTIONS: 4278 printf(" EXCEPTIONS FPU_MIN: %#x\n", 4279 info & OEX_FPU_MIN); 4280 printf("%11.11s FPU_MAX: %#x\n", "", 4281 info & OEX_FPU_MAX); 4282 dump_mips_option_flags("", mips_exceptions_option, 4283 info); 4284 break; 4285 case ODK_PAD: 4286 printf(" %-10.10s section: %ju\n", "OPAD", 4287 (uintmax_t) sndx); 4288 dump_mips_option_flags("", mips_pad_option, info); 4289 break; 4290 case ODK_HWPATCH: 4291 dump_mips_option_flags("HWPATCH", mips_hwpatch_option, 4292 info); 4293 break; 4294 case ODK_HWAND: 4295 dump_mips_option_flags("HWAND", mips_hwa_option, info); 4296 break; 4297 case ODK_HWOR: 4298 dump_mips_option_flags("HWOR", mips_hwo_option, info); 4299 break; 4300 case ODK_FILL: 4301 printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info); 4302 break; 4303 case ODK_TAGS: 4304 printf(" %-10.10s\n", "TAGS"); 4305 break; 4306 case ODK_GP_GROUP: 4307 printf(" %-10.10s GP group number: %#x\n", "GP_GROUP", 4308 info & 0xFFFF); 4309 if (info & 0x10000) 4310 printf(" %-10.10s GP group is " 4311 "self-contained\n", ""); 4312 break; 4313 case ODK_IDENT: 4314 printf(" %-10.10s default GP group number: %#x\n", 4315 "IDENT", info & 0xFFFF); 4316 if (info & 0x10000) 4317 printf(" %-10.10s default GP group is " 4318 "self-contained\n", ""); 4319 break; 4320 case ODK_PAGESIZE: 4321 printf(" %-10.10s\n", "PAGESIZE"); 4322 break; 4323 default: 4324 break; 4325 } 4326 p += size; 4327 } 4328 } 4329 4330 static void 4331 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info) 4332 { 4333 int first; 4334 4335 first = 1; 4336 for (; opt->desc != NULL; opt++) { 4337 if (info & opt->flag) { 4338 printf(" %-10.10s %s\n", first ? name : "", 4339 opt->desc); 4340 first = 0; 4341 } 4342 } 4343 } 4344 4345 static void 4346 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz) 4347 { 4348 uint32_t ri_gprmask; 4349 uint32_t ri_cprmask[4]; 4350 uint64_t ri_gp_value; 4351 uint8_t *pe; 4352 int i; 4353 4354 pe = p + sz; 4355 while (p < pe) { 4356 ri_gprmask = re->dw_decode(&p, 4); 4357 /* Skip ri_pad padding field for mips64. */ 4358 if (re->ec == ELFCLASS64) 4359 re->dw_decode(&p, 4); 4360 for (i = 0; i < 4; i++) 4361 ri_cprmask[i] = re->dw_decode(&p, 4); 4362 if (re->ec == ELFCLASS32) 4363 ri_gp_value = re->dw_decode(&p, 4); 4364 else 4365 ri_gp_value = re->dw_decode(&p, 8); 4366 printf(" %s ", option_kind(ODK_REGINFO)); 4367 printf("ri_gprmask: 0x%08jx\n", (uintmax_t) ri_gprmask); 4368 for (i = 0; i < 4; i++) 4369 printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i, 4370 (uintmax_t) ri_cprmask[i]); 4371 printf("%12.12s", ""); 4372 printf("ri_gp_value: %#jx\n", (uintmax_t) ri_gp_value); 4373 } 4374 } 4375 4376 static void 4377 dump_arch_specific_info(struct readelf *re) 4378 { 4379 4380 dump_liblist(re); 4381 dump_attributes(re); 4382 4383 switch (re->ehdr.e_machine) { 4384 case EM_MIPS: 4385 case EM_MIPS_RS3_LE: 4386 dump_mips_specific_info(re); 4387 default: 4388 break; 4389 } 4390 } 4391 4392 static const char * 4393 dwarf_regname(struct readelf *re, unsigned int num) 4394 { 4395 static char rx[32]; 4396 const char *rn; 4397 4398 if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL) 4399 return (rn); 4400 4401 snprintf(rx, sizeof(rx), "r%u", num); 4402 4403 return (rx); 4404 } 4405 4406 static void 4407 dump_dwarf_line(struct readelf *re) 4408 { 4409 struct section *s; 4410 Dwarf_Die die; 4411 Dwarf_Error de; 4412 Dwarf_Half tag, version, pointer_size; 4413 Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize; 4414 Dwarf_Small minlen, defstmt, lrange, opbase, oplen; 4415 Elf_Data *d; 4416 char *pn; 4417 uint64_t address, file, line, column, isa, opsize, udelta; 4418 int64_t sdelta; 4419 uint8_t *p, *pe; 4420 int8_t lbase; 4421 int i, is_stmt, dwarf_size, elferr, ret; 4422 4423 printf("\nDump of debug contents of section .debug_line:\n"); 4424 4425 s = NULL; 4426 for (i = 0; (size_t) i < re->shnum; i++) { 4427 s = &re->sl[i]; 4428 if (s->name != NULL && !strcmp(s->name, ".debug_line")) 4429 break; 4430 } 4431 if ((size_t) i >= re->shnum) 4432 return; 4433 4434 (void) elf_errno(); 4435 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4436 elferr = elf_errno(); 4437 if (elferr != 0) 4438 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 4439 return; 4440 } 4441 if (d->d_size <= 0) 4442 return; 4443 4444 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4445 NULL, &de)) == DW_DLV_OK) { 4446 die = NULL; 4447 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) { 4448 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4449 warnx("dwarf_tag failed: %s", 4450 dwarf_errmsg(de)); 4451 return; 4452 } 4453 /* XXX: What about DW_TAG_partial_unit? */ 4454 if (tag == DW_TAG_compile_unit) 4455 break; 4456 } 4457 if (die == NULL) { 4458 warnx("could not find DW_TAG_compile_unit die"); 4459 return; 4460 } 4461 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset, 4462 &de) != DW_DLV_OK) 4463 continue; 4464 4465 length = re->dw_read(d, &offset, 4); 4466 if (length == 0xffffffff) { 4467 dwarf_size = 8; 4468 length = re->dw_read(d, &offset, 8); 4469 } else 4470 dwarf_size = 4; 4471 4472 if (length > d->d_size - offset) { 4473 warnx("invalid .dwarf_line section"); 4474 continue; 4475 } 4476 4477 endoff = offset + length; 4478 pe = (uint8_t *) d->d_buf + endoff; 4479 version = re->dw_read(d, &offset, 2); 4480 hdrlen = re->dw_read(d, &offset, dwarf_size); 4481 minlen = re->dw_read(d, &offset, 1); 4482 defstmt = re->dw_read(d, &offset, 1); 4483 lbase = re->dw_read(d, &offset, 1); 4484 lrange = re->dw_read(d, &offset, 1); 4485 opbase = re->dw_read(d, &offset, 1); 4486 4487 printf("\n"); 4488 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 4489 printf(" DWARF version:\t\t%u\n", version); 4490 printf(" Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen); 4491 printf(" Minimum Instruction Length:\t%u\n", minlen); 4492 printf(" Initial value of 'is_stmt':\t%u\n", defstmt); 4493 printf(" Line Base:\t\t\t%d\n", lbase); 4494 printf(" Line Range:\t\t\t%u\n", lrange); 4495 printf(" Opcode Base:\t\t\t%u\n", opbase); 4496 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de); 4497 printf(" (Pointer size:\t\t%u)\n", pointer_size); 4498 4499 printf("\n"); 4500 printf(" Opcodes:\n"); 4501 for (i = 1; i < opbase; i++) { 4502 oplen = re->dw_read(d, &offset, 1); 4503 printf(" Opcode %d has %u args\n", i, oplen); 4504 } 4505 4506 printf("\n"); 4507 printf(" The Directory Table:\n"); 4508 p = (uint8_t *) d->d_buf + offset; 4509 while (*p != '\0') { 4510 printf(" %s\n", (char *) p); 4511 p += strlen((char *) p) + 1; 4512 } 4513 4514 p++; 4515 printf("\n"); 4516 printf(" The File Name Table:\n"); 4517 printf(" Entry\tDir\tTime\tSize\tName\n"); 4518 i = 0; 4519 while (*p != '\0') { 4520 i++; 4521 pn = (char *) p; 4522 p += strlen(pn) + 1; 4523 dirndx = _decode_uleb128(&p, pe); 4524 mtime = _decode_uleb128(&p, pe); 4525 fsize = _decode_uleb128(&p, pe); 4526 printf(" %d\t%ju\t%ju\t%ju\t%s\n", i, 4527 (uintmax_t) dirndx, (uintmax_t) mtime, 4528 (uintmax_t) fsize, pn); 4529 } 4530 4531 #define RESET_REGISTERS \ 4532 do { \ 4533 address = 0; \ 4534 file = 1; \ 4535 line = 1; \ 4536 column = 0; \ 4537 is_stmt = defstmt; \ 4538 } while(0) 4539 4540 #define LINE(x) (lbase + (((x) - opbase) % lrange)) 4541 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen) 4542 4543 p++; 4544 printf("\n"); 4545 printf(" Line Number Statements:\n"); 4546 4547 RESET_REGISTERS; 4548 4549 while (p < pe) { 4550 4551 if (*p == 0) { 4552 /* 4553 * Extended Opcodes. 4554 */ 4555 p++; 4556 opsize = _decode_uleb128(&p, pe); 4557 printf(" Extended opcode %u: ", *p); 4558 switch (*p) { 4559 case DW_LNE_end_sequence: 4560 p++; 4561 RESET_REGISTERS; 4562 printf("End of Sequence\n"); 4563 break; 4564 case DW_LNE_set_address: 4565 p++; 4566 address = re->dw_decode(&p, 4567 pointer_size); 4568 printf("set Address to %#jx\n", 4569 (uintmax_t) address); 4570 break; 4571 case DW_LNE_define_file: 4572 p++; 4573 pn = (char *) p; 4574 p += strlen(pn) + 1; 4575 dirndx = _decode_uleb128(&p, pe); 4576 mtime = _decode_uleb128(&p, pe); 4577 fsize = _decode_uleb128(&p, pe); 4578 printf("define new file: %s\n", pn); 4579 break; 4580 default: 4581 /* Unrecognized extened opcodes. */ 4582 p += opsize; 4583 printf("unknown opcode\n"); 4584 } 4585 } else if (*p > 0 && *p < opbase) { 4586 /* 4587 * Standard Opcodes. 4588 */ 4589 switch(*p++) { 4590 case DW_LNS_copy: 4591 printf(" Copy\n"); 4592 break; 4593 case DW_LNS_advance_pc: 4594 udelta = _decode_uleb128(&p, pe) * 4595 minlen; 4596 address += udelta; 4597 printf(" Advance PC by %ju to %#jx\n", 4598 (uintmax_t) udelta, 4599 (uintmax_t) address); 4600 break; 4601 case DW_LNS_advance_line: 4602 sdelta = _decode_sleb128(&p, pe); 4603 line += sdelta; 4604 printf(" Advance Line by %jd to %ju\n", 4605 (intmax_t) sdelta, 4606 (uintmax_t) line); 4607 break; 4608 case DW_LNS_set_file: 4609 file = _decode_uleb128(&p, pe); 4610 printf(" Set File to %ju\n", 4611 (uintmax_t) file); 4612 break; 4613 case DW_LNS_set_column: 4614 column = _decode_uleb128(&p, pe); 4615 printf(" Set Column to %ju\n", 4616 (uintmax_t) column); 4617 break; 4618 case DW_LNS_negate_stmt: 4619 is_stmt = !is_stmt; 4620 printf(" Set is_stmt to %d\n", is_stmt); 4621 break; 4622 case DW_LNS_set_basic_block: 4623 printf(" Set basic block flag\n"); 4624 break; 4625 case DW_LNS_const_add_pc: 4626 address += ADDRESS(255); 4627 printf(" Advance PC by constant %ju" 4628 " to %#jx\n", 4629 (uintmax_t) ADDRESS(255), 4630 (uintmax_t) address); 4631 break; 4632 case DW_LNS_fixed_advance_pc: 4633 udelta = re->dw_decode(&p, 2); 4634 address += udelta; 4635 printf(" Advance PC by fixed value " 4636 "%ju to %#jx\n", 4637 (uintmax_t) udelta, 4638 (uintmax_t) address); 4639 break; 4640 case DW_LNS_set_prologue_end: 4641 printf(" Set prologue end flag\n"); 4642 break; 4643 case DW_LNS_set_epilogue_begin: 4644 printf(" Set epilogue begin flag\n"); 4645 break; 4646 case DW_LNS_set_isa: 4647 isa = _decode_uleb128(&p, pe); 4648 printf(" Set isa to %ju\n", 4649 (uintmax_t) isa); 4650 break; 4651 default: 4652 /* Unrecognized extended opcodes. */ 4653 printf(" Unknown extended opcode %u\n", 4654 *(p - 1)); 4655 break; 4656 } 4657 4658 } else { 4659 /* 4660 * Special Opcodes. 4661 */ 4662 line += LINE(*p); 4663 address += ADDRESS(*p); 4664 printf(" Special opcode %u: advance Address " 4665 "by %ju to %#jx and Line by %jd to %ju\n", 4666 *p - opbase, (uintmax_t) ADDRESS(*p), 4667 (uintmax_t) address, (intmax_t) LINE(*p), 4668 (uintmax_t) line); 4669 p++; 4670 } 4671 4672 4673 } 4674 } 4675 if (ret == DW_DLV_ERROR) 4676 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 4677 4678 #undef RESET_REGISTERS 4679 #undef LINE 4680 #undef ADDRESS 4681 } 4682 4683 static void 4684 dump_dwarf_line_decoded(struct readelf *re) 4685 { 4686 Dwarf_Die die; 4687 Dwarf_Line *linebuf, ln; 4688 Dwarf_Addr lineaddr; 4689 Dwarf_Signed linecount, srccount; 4690 Dwarf_Unsigned lineno, fn; 4691 Dwarf_Error de; 4692 const char *dir, *file; 4693 char **srcfiles; 4694 int i, ret; 4695 4696 printf("Decoded dump of debug contents of section .debug_line:\n\n"); 4697 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4698 NULL, &de)) == DW_DLV_OK) { 4699 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK) 4700 continue; 4701 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) != 4702 DW_DLV_OK) 4703 file = NULL; 4704 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) != 4705 DW_DLV_OK) 4706 dir = NULL; 4707 printf("CU: "); 4708 if (dir && file) 4709 printf("%s/", dir); 4710 if (file) 4711 printf("%s", file); 4712 putchar('\n'); 4713 printf("%-37s %11s %s\n", "Filename", "Line Number", 4714 "Starting Address"); 4715 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK) 4716 continue; 4717 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK) 4718 continue; 4719 for (i = 0; i < linecount; i++) { 4720 ln = linebuf[i]; 4721 if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK) 4722 continue; 4723 if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK) 4724 continue; 4725 if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK) 4726 continue; 4727 printf("%-37s %11ju %#18jx\n", 4728 basename(srcfiles[fn - 1]), (uintmax_t) lineno, 4729 (uintmax_t) lineaddr); 4730 } 4731 putchar('\n'); 4732 } 4733 } 4734 4735 static void 4736 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level) 4737 { 4738 Dwarf_Attribute *attr_list; 4739 Dwarf_Die ret_die; 4740 Dwarf_Off dieoff, cuoff, culen, attroff; 4741 Dwarf_Unsigned ate, lang, v_udata, v_sig; 4742 Dwarf_Signed attr_count, v_sdata; 4743 Dwarf_Off v_off; 4744 Dwarf_Addr v_addr; 4745 Dwarf_Half tag, attr, form; 4746 Dwarf_Block *v_block; 4747 Dwarf_Bool v_bool, is_info; 4748 Dwarf_Sig8 v_sig8; 4749 Dwarf_Error de; 4750 Dwarf_Ptr v_expr; 4751 const char *tag_str, *attr_str, *ate_str, *lang_str; 4752 char unk_tag[32], unk_attr[32]; 4753 char *v_str; 4754 uint8_t *b, *p; 4755 int i, j, abc, ret; 4756 4757 if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) { 4758 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de)); 4759 goto cont_search; 4760 } 4761 4762 printf(" <%d><%jx>: ", level, (uintmax_t) dieoff); 4763 4764 if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) { 4765 warnx("dwarf_die_CU_offset_range failed: %s", 4766 dwarf_errmsg(de)); 4767 cuoff = 0; 4768 } 4769 4770 abc = dwarf_die_abbrev_code(die); 4771 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4772 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 4773 goto cont_search; 4774 } 4775 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 4776 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag); 4777 tag_str = unk_tag; 4778 } 4779 4780 printf("Abbrev Number: %d (%s)\n", abc, tag_str); 4781 4782 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 4783 DW_DLV_OK) { 4784 if (ret == DW_DLV_ERROR) 4785 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 4786 goto cont_search; 4787 } 4788 4789 for (i = 0; i < attr_count; i++) { 4790 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 4791 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 4792 continue; 4793 } 4794 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 4795 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 4796 continue; 4797 } 4798 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) { 4799 snprintf(unk_attr, sizeof(unk_attr), 4800 "[Unknown AT: %#x]", attr); 4801 attr_str = unk_attr; 4802 } 4803 if (dwarf_attroffset(attr_list[i], &attroff, &de) != 4804 DW_DLV_OK) { 4805 warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de)); 4806 attroff = 0; 4807 } 4808 printf(" <%jx> %-18s: ", (uintmax_t) attroff, attr_str); 4809 switch (form) { 4810 case DW_FORM_ref_addr: 4811 case DW_FORM_sec_offset: 4812 if (dwarf_global_formref(attr_list[i], &v_off, &de) != 4813 DW_DLV_OK) { 4814 warnx("dwarf_global_formref failed: %s", 4815 dwarf_errmsg(de)); 4816 continue; 4817 } 4818 if (form == DW_FORM_ref_addr) 4819 printf("<0x%jx>", (uintmax_t) v_off); 4820 else 4821 printf("0x%jx", (uintmax_t) v_off); 4822 break; 4823 4824 case DW_FORM_ref1: 4825 case DW_FORM_ref2: 4826 case DW_FORM_ref4: 4827 case DW_FORM_ref8: 4828 case DW_FORM_ref_udata: 4829 if (dwarf_formref(attr_list[i], &v_off, &de) != 4830 DW_DLV_OK) { 4831 warnx("dwarf_formref failed: %s", 4832 dwarf_errmsg(de)); 4833 continue; 4834 } 4835 v_off += cuoff; 4836 printf("<0x%jx>", (uintmax_t) v_off); 4837 break; 4838 4839 case DW_FORM_addr: 4840 if (dwarf_formaddr(attr_list[i], &v_addr, &de) != 4841 DW_DLV_OK) { 4842 warnx("dwarf_formaddr failed: %s", 4843 dwarf_errmsg(de)); 4844 continue; 4845 } 4846 printf("%#jx", (uintmax_t) v_addr); 4847 break; 4848 4849 case DW_FORM_data1: 4850 case DW_FORM_data2: 4851 case DW_FORM_data4: 4852 case DW_FORM_data8: 4853 case DW_FORM_udata: 4854 if (dwarf_formudata(attr_list[i], &v_udata, &de) != 4855 DW_DLV_OK) { 4856 warnx("dwarf_formudata failed: %s", 4857 dwarf_errmsg(de)); 4858 continue; 4859 } 4860 if (attr == DW_AT_high_pc) 4861 printf("0x%jx", (uintmax_t) v_udata); 4862 else 4863 printf("%ju", (uintmax_t) v_udata); 4864 break; 4865 4866 case DW_FORM_sdata: 4867 if (dwarf_formsdata(attr_list[i], &v_sdata, &de) != 4868 DW_DLV_OK) { 4869 warnx("dwarf_formudata failed: %s", 4870 dwarf_errmsg(de)); 4871 continue; 4872 } 4873 printf("%jd", (intmax_t) v_sdata); 4874 break; 4875 4876 case DW_FORM_flag: 4877 if (dwarf_formflag(attr_list[i], &v_bool, &de) != 4878 DW_DLV_OK) { 4879 warnx("dwarf_formflag failed: %s", 4880 dwarf_errmsg(de)); 4881 continue; 4882 } 4883 printf("%jd", (intmax_t) v_bool); 4884 break; 4885 4886 case DW_FORM_flag_present: 4887 putchar('1'); 4888 break; 4889 4890 case DW_FORM_string: 4891 case DW_FORM_strp: 4892 if (dwarf_formstring(attr_list[i], &v_str, &de) != 4893 DW_DLV_OK) { 4894 warnx("dwarf_formstring failed: %s", 4895 dwarf_errmsg(de)); 4896 continue; 4897 } 4898 if (form == DW_FORM_string) 4899 printf("%s", v_str); 4900 else 4901 printf("(indirect string) %s", v_str); 4902 break; 4903 4904 case DW_FORM_block: 4905 case DW_FORM_block1: 4906 case DW_FORM_block2: 4907 case DW_FORM_block4: 4908 if (dwarf_formblock(attr_list[i], &v_block, &de) != 4909 DW_DLV_OK) { 4910 warnx("dwarf_formblock failed: %s", 4911 dwarf_errmsg(de)); 4912 continue; 4913 } 4914 printf("%ju byte block:", (uintmax_t) v_block->bl_len); 4915 b = v_block->bl_data; 4916 for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++) 4917 printf(" %x", b[j]); 4918 printf("\t("); 4919 dump_dwarf_block(re, v_block->bl_data, v_block->bl_len); 4920 putchar(')'); 4921 break; 4922 4923 case DW_FORM_exprloc: 4924 if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr, 4925 &de) != DW_DLV_OK) { 4926 warnx("dwarf_formexprloc failed: %s", 4927 dwarf_errmsg(de)); 4928 continue; 4929 } 4930 printf("%ju byte block:", (uintmax_t) v_udata); 4931 b = v_expr; 4932 for (j = 0; (Dwarf_Unsigned) j < v_udata; j++) 4933 printf(" %x", b[j]); 4934 printf("\t("); 4935 dump_dwarf_block(re, v_expr, v_udata); 4936 putchar(')'); 4937 break; 4938 4939 case DW_FORM_ref_sig8: 4940 if (dwarf_formsig8(attr_list[i], &v_sig8, &de) != 4941 DW_DLV_OK) { 4942 warnx("dwarf_formsig8 failed: %s", 4943 dwarf_errmsg(de)); 4944 continue; 4945 } 4946 p = (uint8_t *)(uintptr_t) &v_sig8.signature[0]; 4947 v_sig = re->dw_decode(&p, 8); 4948 printf("signature: 0x%jx", (uintmax_t) v_sig); 4949 } 4950 switch (attr) { 4951 case DW_AT_encoding: 4952 if (dwarf_attrval_unsigned(die, attr, &ate, &de) != 4953 DW_DLV_OK) 4954 break; 4955 if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK) 4956 ate_str = "DW_ATE_UNKNOWN"; 4957 printf("\t(%s)", &ate_str[strlen("DW_ATE_")]); 4958 break; 4959 4960 case DW_AT_language: 4961 if (dwarf_attrval_unsigned(die, attr, &lang, &de) != 4962 DW_DLV_OK) 4963 break; 4964 if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK) 4965 break; 4966 printf("\t(%s)", &lang_str[strlen("DW_LANG_")]); 4967 break; 4968 4969 case DW_AT_location: 4970 case DW_AT_string_length: 4971 case DW_AT_return_addr: 4972 case DW_AT_data_member_location: 4973 case DW_AT_frame_base: 4974 case DW_AT_segment: 4975 case DW_AT_static_link: 4976 case DW_AT_use_location: 4977 case DW_AT_vtable_elem_location: 4978 switch (form) { 4979 case DW_FORM_data4: 4980 case DW_FORM_data8: 4981 case DW_FORM_sec_offset: 4982 printf("\t(location list)"); 4983 break; 4984 default: 4985 break; 4986 } 4987 4988 default: 4989 break; 4990 } 4991 putchar('\n'); 4992 } 4993 4994 4995 cont_search: 4996 /* Search children. */ 4997 ret = dwarf_child(die, &ret_die, &de); 4998 if (ret == DW_DLV_ERROR) 4999 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5000 else if (ret == DW_DLV_OK) 5001 dump_dwarf_die(re, ret_die, level + 1); 5002 5003 /* Search sibling. */ 5004 is_info = dwarf_get_die_infotypes_flag(die); 5005 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 5006 if (ret == DW_DLV_ERROR) 5007 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5008 else if (ret == DW_DLV_OK) 5009 dump_dwarf_die(re, ret_die, level); 5010 5011 dwarf_dealloc(re->dbg, die, DW_DLA_DIE); 5012 } 5013 5014 static void 5015 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize, 5016 Dwarf_Half ver) 5017 { 5018 5019 re->cu_psize = psize; 5020 re->cu_osize = osize; 5021 re->cu_ver = ver; 5022 } 5023 5024 static void 5025 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info) 5026 { 5027 struct section *s; 5028 Dwarf_Die die; 5029 Dwarf_Error de; 5030 Dwarf_Half tag, version, pointer_size, off_size; 5031 Dwarf_Off cu_offset, cu_length; 5032 Dwarf_Off aboff; 5033 Dwarf_Unsigned typeoff; 5034 Dwarf_Sig8 sig8; 5035 Dwarf_Unsigned sig; 5036 uint8_t *p; 5037 const char *sn; 5038 int i, ret; 5039 5040 sn = is_info ? ".debug_info" : ".debug_types"; 5041 5042 s = NULL; 5043 for (i = 0; (size_t) i < re->shnum; i++) { 5044 s = &re->sl[i]; 5045 if (s->name != NULL && !strcmp(s->name, sn)) 5046 break; 5047 } 5048 if ((size_t) i >= re->shnum) 5049 return; 5050 5051 do { 5052 printf("\nDump of debug contents of section %s:\n", sn); 5053 5054 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL, 5055 &version, &aboff, &pointer_size, &off_size, NULL, &sig8, 5056 &typeoff, NULL, &de)) == DW_DLV_OK) { 5057 set_cu_context(re, pointer_size, off_size, version); 5058 die = NULL; 5059 while (dwarf_siblingof_b(re->dbg, die, &die, is_info, 5060 &de) == DW_DLV_OK) { 5061 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5062 warnx("dwarf_tag failed: %s", 5063 dwarf_errmsg(de)); 5064 continue; 5065 } 5066 /* XXX: What about DW_TAG_partial_unit? */ 5067 if ((is_info && tag == DW_TAG_compile_unit) || 5068 (!is_info && tag == DW_TAG_type_unit)) 5069 break; 5070 } 5071 if (die == NULL && is_info) { 5072 warnx("could not find DW_TAG_compile_unit " 5073 "die"); 5074 continue; 5075 } else if (die == NULL && !is_info) { 5076 warnx("could not find DW_TAG_type_unit die"); 5077 continue; 5078 } 5079 5080 if (dwarf_die_CU_offset_range(die, &cu_offset, 5081 &cu_length, &de) != DW_DLV_OK) { 5082 warnx("dwarf_die_CU_offset failed: %s", 5083 dwarf_errmsg(de)); 5084 continue; 5085 } 5086 5087 cu_length -= off_size == 4 ? 4 : 12; 5088 5089 sig = 0; 5090 if (!is_info) { 5091 p = (uint8_t *)(uintptr_t) &sig8.signature[0]; 5092 sig = re->dw_decode(&p, 8); 5093 } 5094 5095 printf("\n Type Unit @ offset 0x%jx:\n", 5096 (uintmax_t) cu_offset); 5097 printf(" Length:\t\t%#jx (%d-bit)\n", 5098 (uintmax_t) cu_length, off_size == 4 ? 32 : 64); 5099 printf(" Version:\t\t%u\n", version); 5100 printf(" Abbrev Offset:\t0x%jx\n", 5101 (uintmax_t) aboff); 5102 printf(" Pointer Size:\t%u\n", pointer_size); 5103 if (!is_info) { 5104 printf(" Signature:\t\t0x%016jx\n", 5105 (uintmax_t) sig); 5106 printf(" Type Offset:\t0x%jx\n", 5107 (uintmax_t) typeoff); 5108 } 5109 5110 dump_dwarf_die(re, die, 0); 5111 } 5112 if (ret == DW_DLV_ERROR) 5113 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5114 if (is_info) 5115 break; 5116 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 5117 } 5118 5119 static void 5120 dump_dwarf_abbrev(struct readelf *re) 5121 { 5122 Dwarf_Abbrev ab; 5123 Dwarf_Off aboff, atoff; 5124 Dwarf_Unsigned length, attr_count; 5125 Dwarf_Signed flag, form; 5126 Dwarf_Half tag, attr; 5127 Dwarf_Error de; 5128 const char *tag_str, *attr_str, *form_str; 5129 char unk_tag[32], unk_attr[32], unk_form[32]; 5130 int i, j, ret; 5131 5132 printf("\nContents of section .debug_abbrev:\n\n"); 5133 5134 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff, 5135 NULL, NULL, &de)) == DW_DLV_OK) { 5136 printf(" Number TAG\n"); 5137 i = 0; 5138 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length, 5139 &attr_count, &de)) == DW_DLV_OK) { 5140 if (length == 1) { 5141 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5142 break; 5143 } 5144 aboff += length; 5145 printf("%4d", ++i); 5146 if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) { 5147 warnx("dwarf_get_abbrev_tag failed: %s", 5148 dwarf_errmsg(de)); 5149 goto next_abbrev; 5150 } 5151 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 5152 snprintf(unk_tag, sizeof(unk_tag), 5153 "[Unknown Tag: %#x]", tag); 5154 tag_str = unk_tag; 5155 } 5156 if (dwarf_get_abbrev_children_flag(ab, &flag, &de) != 5157 DW_DLV_OK) { 5158 warnx("dwarf_get_abbrev_children_flag failed:" 5159 " %s", dwarf_errmsg(de)); 5160 goto next_abbrev; 5161 } 5162 printf(" %s %s\n", tag_str, 5163 flag ? "[has children]" : "[no children]"); 5164 for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) { 5165 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j, 5166 &attr, &form, &atoff, &de) != DW_DLV_OK) { 5167 warnx("dwarf_get_abbrev_entry failed:" 5168 " %s", dwarf_errmsg(de)); 5169 continue; 5170 } 5171 if (dwarf_get_AT_name(attr, &attr_str) != 5172 DW_DLV_OK) { 5173 snprintf(unk_attr, sizeof(unk_attr), 5174 "[Unknown AT: %#x]", attr); 5175 attr_str = unk_attr; 5176 } 5177 if (dwarf_get_FORM_name(form, &form_str) != 5178 DW_DLV_OK) { 5179 snprintf(unk_form, sizeof(unk_form), 5180 "[Unknown Form: %#x]", 5181 (Dwarf_Half) form); 5182 form_str = unk_form; 5183 } 5184 printf(" %-18s %s\n", attr_str, form_str); 5185 } 5186 next_abbrev: 5187 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5188 } 5189 if (ret != DW_DLV_OK) 5190 warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de)); 5191 } 5192 if (ret == DW_DLV_ERROR) 5193 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5194 } 5195 5196 static void 5197 dump_dwarf_pubnames(struct readelf *re) 5198 { 5199 struct section *s; 5200 Dwarf_Off die_off; 5201 Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length; 5202 Dwarf_Signed cnt; 5203 Dwarf_Global *globs; 5204 Dwarf_Half nt_version; 5205 Dwarf_Error de; 5206 Elf_Data *d; 5207 char *glob_name; 5208 int i, dwarf_size, elferr; 5209 5210 printf("\nContents of the .debug_pubnames section:\n"); 5211 5212 s = NULL; 5213 for (i = 0; (size_t) i < re->shnum; i++) { 5214 s = &re->sl[i]; 5215 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames")) 5216 break; 5217 } 5218 if ((size_t) i >= re->shnum) 5219 return; 5220 5221 (void) elf_errno(); 5222 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5223 elferr = elf_errno(); 5224 if (elferr != 0) 5225 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5226 return; 5227 } 5228 if (d->d_size <= 0) 5229 return; 5230 5231 /* Read in .debug_pubnames section table header. */ 5232 offset = 0; 5233 length = re->dw_read(d, &offset, 4); 5234 if (length == 0xffffffff) { 5235 dwarf_size = 8; 5236 length = re->dw_read(d, &offset, 8); 5237 } else 5238 dwarf_size = 4; 5239 5240 if (length > d->d_size - offset) { 5241 warnx("invalid .dwarf_pubnames section"); 5242 return; 5243 } 5244 5245 nt_version = re->dw_read(d, &offset, 2); 5246 nt_cu_offset = re->dw_read(d, &offset, dwarf_size); 5247 nt_cu_length = re->dw_read(d, &offset, dwarf_size); 5248 printf(" Length:\t\t\t\t%ju\n", (uintmax_t) length); 5249 printf(" Version:\t\t\t\t%u\n", nt_version); 5250 printf(" Offset into .debug_info section:\t%ju\n", 5251 (uintmax_t) nt_cu_offset); 5252 printf(" Size of area in .debug_info section:\t%ju\n", 5253 (uintmax_t) nt_cu_length); 5254 5255 if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) { 5256 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de)); 5257 return; 5258 } 5259 5260 printf("\n Offset Name\n"); 5261 for (i = 0; i < cnt; i++) { 5262 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) { 5263 warnx("dwarf_globname failed: %s", dwarf_errmsg(de)); 5264 continue; 5265 } 5266 if (dwarf_global_die_offset(globs[i], &die_off, &de) != 5267 DW_DLV_OK) { 5268 warnx("dwarf_global_die_offset failed: %s", 5269 dwarf_errmsg(de)); 5270 continue; 5271 } 5272 printf(" %-11ju %s\n", (uintmax_t) die_off, glob_name); 5273 } 5274 } 5275 5276 static void 5277 dump_dwarf_aranges(struct readelf *re) 5278 { 5279 struct section *s; 5280 Dwarf_Arange *aranges; 5281 Dwarf_Addr start; 5282 Dwarf_Unsigned offset, length, as_cu_offset; 5283 Dwarf_Off die_off; 5284 Dwarf_Signed cnt; 5285 Dwarf_Half as_version, as_addrsz, as_segsz; 5286 Dwarf_Error de; 5287 Elf_Data *d; 5288 int i, dwarf_size, elferr; 5289 5290 printf("\nContents of section .debug_aranges:\n"); 5291 5292 s = NULL; 5293 for (i = 0; (size_t) i < re->shnum; i++) { 5294 s = &re->sl[i]; 5295 if (s->name != NULL && !strcmp(s->name, ".debug_aranges")) 5296 break; 5297 } 5298 if ((size_t) i >= re->shnum) 5299 return; 5300 5301 (void) elf_errno(); 5302 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5303 elferr = elf_errno(); 5304 if (elferr != 0) 5305 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5306 return; 5307 } 5308 if (d->d_size <= 0) 5309 return; 5310 5311 /* Read in the .debug_aranges section table header. */ 5312 offset = 0; 5313 length = re->dw_read(d, &offset, 4); 5314 if (length == 0xffffffff) { 5315 dwarf_size = 8; 5316 length = re->dw_read(d, &offset, 8); 5317 } else 5318 dwarf_size = 4; 5319 5320 if (length > d->d_size - offset) { 5321 warnx("invalid .dwarf_aranges section"); 5322 return; 5323 } 5324 5325 as_version = re->dw_read(d, &offset, 2); 5326 as_cu_offset = re->dw_read(d, &offset, dwarf_size); 5327 as_addrsz = re->dw_read(d, &offset, 1); 5328 as_segsz = re->dw_read(d, &offset, 1); 5329 5330 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 5331 printf(" Version:\t\t\t%u\n", as_version); 5332 printf(" Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset); 5333 printf(" Pointer Size:\t\t\t%u\n", as_addrsz); 5334 printf(" Segment Size:\t\t\t%u\n", as_segsz); 5335 5336 if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) { 5337 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de)); 5338 return; 5339 } 5340 5341 printf("\n Address Length\n"); 5342 for (i = 0; i < cnt; i++) { 5343 if (dwarf_get_arange_info(aranges[i], &start, &length, 5344 &die_off, &de) != DW_DLV_OK) { 5345 warnx("dwarf_get_arange_info failed: %s", 5346 dwarf_errmsg(de)); 5347 continue; 5348 } 5349 printf(" %08jx %ju\n", (uintmax_t) start, 5350 (uintmax_t) length); 5351 } 5352 } 5353 5354 static void 5355 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) 5356 { 5357 Dwarf_Attribute *attr_list; 5358 Dwarf_Ranges *ranges; 5359 Dwarf_Die ret_die; 5360 Dwarf_Error de; 5361 Dwarf_Addr base0; 5362 Dwarf_Half attr; 5363 Dwarf_Signed attr_count, cnt; 5364 Dwarf_Unsigned off, bytecnt; 5365 int i, j, ret; 5366 5367 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5368 DW_DLV_OK) { 5369 if (ret == DW_DLV_ERROR) 5370 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5371 goto cont_search; 5372 } 5373 5374 for (i = 0; i < attr_count; i++) { 5375 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5376 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5377 continue; 5378 } 5379 if (attr != DW_AT_ranges) 5380 continue; 5381 if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) { 5382 warnx("dwarf_formudata failed: %s", dwarf_errmsg(de)); 5383 continue; 5384 } 5385 if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt, 5386 &bytecnt, &de) != DW_DLV_OK) 5387 continue; 5388 base0 = base; 5389 for (j = 0; j < cnt; j++) { 5390 printf(" %08jx ", (uintmax_t) off); 5391 if (ranges[j].dwr_type == DW_RANGES_END) { 5392 printf("%s\n", "<End of list>"); 5393 continue; 5394 } else if (ranges[j].dwr_type == 5395 DW_RANGES_ADDRESS_SELECTION) { 5396 base0 = ranges[j].dwr_addr2; 5397 continue; 5398 } 5399 if (re->ec == ELFCLASS32) 5400 printf("%08jx %08jx\n", 5401 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5402 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5403 else 5404 printf("%016jx %016jx\n", 5405 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5406 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5407 } 5408 } 5409 5410 cont_search: 5411 /* Search children. */ 5412 ret = dwarf_child(die, &ret_die, &de); 5413 if (ret == DW_DLV_ERROR) 5414 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5415 else if (ret == DW_DLV_OK) 5416 dump_dwarf_ranges_foreach(re, ret_die, base); 5417 5418 /* Search sibling. */ 5419 ret = dwarf_siblingof(re->dbg, die, &ret_die, &de); 5420 if (ret == DW_DLV_ERROR) 5421 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5422 else if (ret == DW_DLV_OK) 5423 dump_dwarf_ranges_foreach(re, ret_die, base); 5424 } 5425 5426 static void 5427 dump_dwarf_ranges(struct readelf *re) 5428 { 5429 Dwarf_Ranges *ranges; 5430 Dwarf_Die die; 5431 Dwarf_Signed cnt; 5432 Dwarf_Unsigned bytecnt; 5433 Dwarf_Half tag; 5434 Dwarf_Error de; 5435 Dwarf_Unsigned lowpc; 5436 int ret; 5437 5438 if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) != 5439 DW_DLV_OK) 5440 return; 5441 5442 printf("Contents of the .debug_ranges section:\n\n"); 5443 if (re->ec == ELFCLASS32) 5444 printf(" %-8s %-8s %s\n", "Offset", "Begin", "End"); 5445 else 5446 printf(" %-8s %-16s %s\n", "Offset", "Begin", "End"); 5447 5448 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5449 NULL, &de)) == DW_DLV_OK) { 5450 die = NULL; 5451 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 5452 continue; 5453 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5454 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5455 continue; 5456 } 5457 /* XXX: What about DW_TAG_partial_unit? */ 5458 lowpc = 0; 5459 if (tag == DW_TAG_compile_unit) { 5460 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc, 5461 &de) != DW_DLV_OK) 5462 lowpc = 0; 5463 } 5464 5465 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc); 5466 } 5467 putchar('\n'); 5468 } 5469 5470 static void 5471 dump_dwarf_macinfo(struct readelf *re) 5472 { 5473 Dwarf_Unsigned offset; 5474 Dwarf_Signed cnt; 5475 Dwarf_Macro_Details *md; 5476 Dwarf_Error de; 5477 const char *mi_str; 5478 char unk_mi[32]; 5479 int i; 5480 5481 #define _MAX_MACINFO_ENTRY 65535 5482 5483 printf("\nContents of section .debug_macinfo:\n\n"); 5484 5485 offset = 0; 5486 while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY, 5487 &cnt, &md, &de) == DW_DLV_OK) { 5488 for (i = 0; i < cnt; i++) { 5489 offset = md[i].dmd_offset + 1; 5490 if (md[i].dmd_type == 0) 5491 break; 5492 if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) != 5493 DW_DLV_OK) { 5494 snprintf(unk_mi, sizeof(unk_mi), 5495 "[Unknown MACINFO: %#x]", md[i].dmd_type); 5496 mi_str = unk_mi; 5497 } 5498 printf(" %s", mi_str); 5499 switch (md[i].dmd_type) { 5500 case DW_MACINFO_define: 5501 case DW_MACINFO_undef: 5502 printf(" - lineno : %jd macro : %s\n", 5503 (intmax_t) md[i].dmd_lineno, 5504 md[i].dmd_macro); 5505 break; 5506 case DW_MACINFO_start_file: 5507 printf(" - lineno : %jd filenum : %jd\n", 5508 (intmax_t) md[i].dmd_lineno, 5509 (intmax_t) md[i].dmd_fileindex); 5510 break; 5511 default: 5512 putchar('\n'); 5513 break; 5514 } 5515 } 5516 } 5517 5518 #undef _MAX_MACINFO_ENTRY 5519 } 5520 5521 static void 5522 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts, 5523 Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc, 5524 Dwarf_Debug dbg) 5525 { 5526 Dwarf_Frame_Op *oplist; 5527 Dwarf_Signed opcnt, delta; 5528 Dwarf_Small op; 5529 Dwarf_Error de; 5530 const char *op_str; 5531 char unk_op[32]; 5532 int i; 5533 5534 if (dwarf_expand_frame_instructions(cie, insts, len, &oplist, 5535 &opcnt, &de) != DW_DLV_OK) { 5536 warnx("dwarf_expand_frame_instructions failed: %s", 5537 dwarf_errmsg(de)); 5538 return; 5539 } 5540 5541 for (i = 0; i < opcnt; i++) { 5542 if (oplist[i].fp_base_op != 0) 5543 op = oplist[i].fp_base_op << 6; 5544 else 5545 op = oplist[i].fp_extended_op; 5546 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) { 5547 snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]", 5548 op); 5549 op_str = unk_op; 5550 } 5551 printf(" %s", op_str); 5552 switch (op) { 5553 case DW_CFA_advance_loc: 5554 delta = oplist[i].fp_offset * caf; 5555 pc += delta; 5556 printf(": %ju to %08jx", (uintmax_t) delta, 5557 (uintmax_t) pc); 5558 break; 5559 case DW_CFA_offset: 5560 case DW_CFA_offset_extended: 5561 case DW_CFA_offset_extended_sf: 5562 delta = oplist[i].fp_offset * daf; 5563 printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register, 5564 dwarf_regname(re, oplist[i].fp_register), 5565 (intmax_t) delta); 5566 break; 5567 case DW_CFA_restore: 5568 printf(": r%u (%s)", oplist[i].fp_register, 5569 dwarf_regname(re, oplist[i].fp_register)); 5570 break; 5571 case DW_CFA_set_loc: 5572 pc = oplist[i].fp_offset; 5573 printf(": to %08jx", (uintmax_t) pc); 5574 break; 5575 case DW_CFA_advance_loc1: 5576 case DW_CFA_advance_loc2: 5577 case DW_CFA_advance_loc4: 5578 pc += oplist[i].fp_offset; 5579 printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset, 5580 (uintmax_t) pc); 5581 break; 5582 case DW_CFA_def_cfa: 5583 printf(": r%u (%s) ofs %ju", oplist[i].fp_register, 5584 dwarf_regname(re, oplist[i].fp_register), 5585 (uintmax_t) oplist[i].fp_offset); 5586 break; 5587 case DW_CFA_def_cfa_sf: 5588 printf(": r%u (%s) ofs %jd", oplist[i].fp_register, 5589 dwarf_regname(re, oplist[i].fp_register), 5590 (intmax_t) (oplist[i].fp_offset * daf)); 5591 break; 5592 case DW_CFA_def_cfa_register: 5593 printf(": r%u (%s)", oplist[i].fp_register, 5594 dwarf_regname(re, oplist[i].fp_register)); 5595 break; 5596 case DW_CFA_def_cfa_offset: 5597 printf(": %ju", (uintmax_t) oplist[i].fp_offset); 5598 break; 5599 case DW_CFA_def_cfa_offset_sf: 5600 printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf)); 5601 break; 5602 default: 5603 break; 5604 } 5605 putchar('\n'); 5606 } 5607 5608 dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK); 5609 } 5610 5611 static char * 5612 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off) 5613 { 5614 static char rs[16]; 5615 5616 if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE) 5617 snprintf(rs, sizeof(rs), "%c", 'u'); 5618 else if (reg == DW_FRAME_CFA_COL) 5619 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off); 5620 else 5621 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg), 5622 (intmax_t) off); 5623 5624 return (rs); 5625 } 5626 5627 static int 5628 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc, 5629 Dwarf_Unsigned func_len, Dwarf_Half cie_ra) 5630 { 5631 Dwarf_Regtable rt; 5632 Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc; 5633 Dwarf_Error de; 5634 char *vec; 5635 int i; 5636 5637 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7)) 5638 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7))) 5639 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7))) 5640 #define RT(x) rt.rules[(x)] 5641 5642 vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1); 5643 if (vec == NULL) 5644 err(EXIT_FAILURE, "calloc failed"); 5645 5646 pre_pc = ~((Dwarf_Addr) 0); 5647 cur_pc = pc; 5648 end_pc = pc + func_len; 5649 for (; cur_pc < end_pc; cur_pc++) { 5650 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5651 &de) != DW_DLV_OK) { 5652 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5653 dwarf_errmsg(de)); 5654 return (-1); 5655 } 5656 if (row_pc == pre_pc) 5657 continue; 5658 pre_pc = row_pc; 5659 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5660 if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE) 5661 BIT_SET(vec, i); 5662 } 5663 } 5664 5665 printf(" LOC CFA "); 5666 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5667 if (BIT_ISSET(vec, i)) { 5668 if ((Dwarf_Half) i == cie_ra) 5669 printf("ra "); 5670 else 5671 printf("%-5s", 5672 dwarf_regname(re, (unsigned int) i)); 5673 } 5674 } 5675 putchar('\n'); 5676 5677 pre_pc = ~((Dwarf_Addr) 0); 5678 cur_pc = pc; 5679 end_pc = pc + func_len; 5680 for (; cur_pc < end_pc; cur_pc++) { 5681 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5682 &de) != DW_DLV_OK) { 5683 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5684 dwarf_errmsg(de)); 5685 return (-1); 5686 } 5687 if (row_pc == pre_pc) 5688 continue; 5689 pre_pc = row_pc; 5690 printf("%08jx ", (uintmax_t) row_pc); 5691 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum, 5692 RT(0).dw_offset)); 5693 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5694 if (BIT_ISSET(vec, i)) { 5695 printf("%-5s", get_regoff_str(re, 5696 RT(i).dw_regnum, RT(i).dw_offset)); 5697 } 5698 } 5699 putchar('\n'); 5700 } 5701 5702 free(vec); 5703 5704 return (0); 5705 5706 #undef BIT_SET 5707 #undef BIT_CLR 5708 #undef BIT_ISSET 5709 #undef RT 5710 } 5711 5712 static void 5713 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) 5714 { 5715 Dwarf_Cie *cie_list, cie, pre_cie; 5716 Dwarf_Fde *fde_list, fde; 5717 Dwarf_Off cie_offset, fde_offset; 5718 Dwarf_Unsigned cie_length, fde_instlen; 5719 Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length; 5720 Dwarf_Signed cie_count, fde_count, cie_index; 5721 Dwarf_Addr low_pc; 5722 Dwarf_Half cie_ra; 5723 Dwarf_Small cie_version; 5724 Dwarf_Ptr fde_addr, fde_inst, cie_inst; 5725 char *cie_aug, c; 5726 int i, eh_frame; 5727 Dwarf_Error de; 5728 5729 printf("\nThe section %s contains:\n\n", s->name); 5730 5731 if (!strcmp(s->name, ".debug_frame")) { 5732 eh_frame = 0; 5733 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count, 5734 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5735 warnx("dwarf_get_fde_list failed: %s", 5736 dwarf_errmsg(de)); 5737 return; 5738 } 5739 } else if (!strcmp(s->name, ".eh_frame")) { 5740 eh_frame = 1; 5741 if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, 5742 &fde_list, &fde_count, &de) != DW_DLV_OK) { 5743 warnx("dwarf_get_fde_list_eh failed: %s", 5744 dwarf_errmsg(de)); 5745 return; 5746 } 5747 } else 5748 return; 5749 5750 pre_cie = NULL; 5751 for (i = 0; i < fde_count; i++) { 5752 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) { 5753 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5754 continue; 5755 } 5756 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) { 5757 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 5758 continue; 5759 } 5760 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr, 5761 &fde_length, &cie_offset, &cie_index, &fde_offset, 5762 &de) != DW_DLV_OK) { 5763 warnx("dwarf_get_fde_range failed: %s", 5764 dwarf_errmsg(de)); 5765 continue; 5766 } 5767 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen, 5768 &de) != DW_DLV_OK) { 5769 warnx("dwarf_get_fde_instr_bytes failed: %s", 5770 dwarf_errmsg(de)); 5771 continue; 5772 } 5773 if (pre_cie == NULL || cie != pre_cie) { 5774 pre_cie = cie; 5775 if (dwarf_get_cie_info(cie, &cie_length, &cie_version, 5776 &cie_aug, &cie_caf, &cie_daf, &cie_ra, 5777 &cie_inst, &cie_instlen, &de) != DW_DLV_OK) { 5778 warnx("dwarf_get_cie_info failed: %s", 5779 dwarf_errmsg(de)); 5780 continue; 5781 } 5782 printf("%08jx %08jx %8.8jx CIE", 5783 (uintmax_t) cie_offset, 5784 (uintmax_t) cie_length, 5785 (uintmax_t) (eh_frame ? 0 : ~0U)); 5786 if (!alt) { 5787 putchar('\n'); 5788 printf(" Version:\t\t\t%u\n", cie_version); 5789 printf(" Augmentation:\t\t\t\""); 5790 while ((c = *cie_aug++) != '\0') 5791 putchar(c); 5792 printf("\"\n"); 5793 printf(" Code alignment factor:\t%ju\n", 5794 (uintmax_t) cie_caf); 5795 printf(" Data alignment factor:\t%jd\n", 5796 (intmax_t) cie_daf); 5797 printf(" Return address column:\t%ju\n", 5798 (uintmax_t) cie_ra); 5799 putchar('\n'); 5800 dump_dwarf_frame_inst(re, cie, cie_inst, 5801 cie_instlen, cie_caf, cie_daf, 0, 5802 re->dbg); 5803 putchar('\n'); 5804 } else { 5805 printf(" \""); 5806 while ((c = *cie_aug++) != '\0') 5807 putchar(c); 5808 putchar('"'); 5809 printf(" cf=%ju df=%jd ra=%ju\n", 5810 (uintmax_t) cie_caf, 5811 (uintmax_t) cie_daf, 5812 (uintmax_t) cie_ra); 5813 dump_dwarf_frame_regtable(re, fde, low_pc, 1, 5814 cie_ra); 5815 putchar('\n'); 5816 } 5817 } 5818 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n", 5819 (uintmax_t) fde_offset, (uintmax_t) fde_length, 5820 (uintmax_t) cie_offset, 5821 (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset : 5822 cie_offset), 5823 (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len)); 5824 if (!alt) 5825 dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen, 5826 cie_caf, cie_daf, low_pc, re->dbg); 5827 else 5828 dump_dwarf_frame_regtable(re, fde, low_pc, func_len, 5829 cie_ra); 5830 putchar('\n'); 5831 } 5832 } 5833 5834 static void 5835 dump_dwarf_frame(struct readelf *re, int alt) 5836 { 5837 struct section *s; 5838 int i; 5839 5840 (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL); 5841 5842 for (i = 0; (size_t) i < re->shnum; i++) { 5843 s = &re->sl[i]; 5844 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") || 5845 !strcmp(s->name, ".eh_frame"))) 5846 dump_dwarf_frame_section(re, s, alt); 5847 } 5848 } 5849 5850 static void 5851 dump_dwarf_str(struct readelf *re) 5852 { 5853 struct section *s; 5854 Elf_Data *d; 5855 unsigned char *p; 5856 int elferr, end, i, j; 5857 5858 printf("\nContents of section .debug_str:\n"); 5859 5860 s = NULL; 5861 for (i = 0; (size_t) i < re->shnum; i++) { 5862 s = &re->sl[i]; 5863 if (s->name != NULL && !strcmp(s->name, ".debug_str")) 5864 break; 5865 } 5866 if ((size_t) i >= re->shnum) 5867 return; 5868 5869 (void) elf_errno(); 5870 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5871 elferr = elf_errno(); 5872 if (elferr != 0) 5873 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5874 return; 5875 } 5876 if (d->d_size <= 0) 5877 return; 5878 5879 for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) { 5880 printf(" 0x%08x", (unsigned int) i); 5881 if ((size_t) i + 16 > d->d_size) 5882 end = d->d_size; 5883 else 5884 end = i + 16; 5885 for (j = i; j < i + 16; j++) { 5886 if ((j - i) % 4 == 0) 5887 putchar(' '); 5888 if (j >= end) { 5889 printf(" "); 5890 continue; 5891 } 5892 printf("%02x", (uint8_t) p[j]); 5893 } 5894 putchar(' '); 5895 for (j = i; j < end; j++) { 5896 if (isprint(p[j])) 5897 putchar(p[j]); 5898 else if (p[j] == 0) 5899 putchar('.'); 5900 else 5901 putchar(' '); 5902 } 5903 putchar('\n'); 5904 } 5905 } 5906 5907 struct loc_at { 5908 Dwarf_Attribute la_at; 5909 Dwarf_Unsigned la_off; 5910 Dwarf_Unsigned la_lowpc; 5911 Dwarf_Half la_cu_psize; 5912 Dwarf_Half la_cu_osize; 5913 Dwarf_Half la_cu_ver; 5914 TAILQ_ENTRY(loc_at) la_next; 5915 }; 5916 5917 static TAILQ_HEAD(, loc_at) lalist = TAILQ_HEAD_INITIALIZER(lalist); 5918 5919 static void 5920 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc) 5921 { 5922 Dwarf_Attribute *attr_list; 5923 Dwarf_Die ret_die; 5924 Dwarf_Unsigned off; 5925 Dwarf_Off ref; 5926 Dwarf_Signed attr_count; 5927 Dwarf_Half attr, form; 5928 Dwarf_Bool is_info; 5929 Dwarf_Error de; 5930 struct loc_at *la, *nla; 5931 int i, ret; 5932 5933 is_info = dwarf_get_die_infotypes_flag(die); 5934 5935 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5936 DW_DLV_OK) { 5937 if (ret == DW_DLV_ERROR) 5938 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5939 goto cont_search; 5940 } 5941 for (i = 0; i < attr_count; i++) { 5942 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5943 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5944 continue; 5945 } 5946 if (attr != DW_AT_location && 5947 attr != DW_AT_string_length && 5948 attr != DW_AT_return_addr && 5949 attr != DW_AT_data_member_location && 5950 attr != DW_AT_frame_base && 5951 attr != DW_AT_segment && 5952 attr != DW_AT_static_link && 5953 attr != DW_AT_use_location && 5954 attr != DW_AT_vtable_elem_location) 5955 continue; 5956 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 5957 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 5958 continue; 5959 } 5960 if (form == DW_FORM_data4 || form == DW_FORM_data8) { 5961 if (dwarf_formudata(attr_list[i], &off, &de) != 5962 DW_DLV_OK) { 5963 warnx("dwarf_formudata failed: %s", 5964 dwarf_errmsg(de)); 5965 continue; 5966 } 5967 } else if (form == DW_FORM_sec_offset) { 5968 if (dwarf_global_formref(attr_list[i], &ref, &de) != 5969 DW_DLV_OK) { 5970 warnx("dwarf_global_formref failed: %s", 5971 dwarf_errmsg(de)); 5972 continue; 5973 } 5974 off = ref; 5975 } else 5976 continue; 5977 5978 TAILQ_FOREACH(la, &lalist, la_next) { 5979 if (off == la->la_off) 5980 break; 5981 if (off < la->la_off) { 5982 if ((nla = malloc(sizeof(*nla))) == NULL) 5983 err(EXIT_FAILURE, "malloc failed"); 5984 nla->la_at = attr_list[i]; 5985 nla->la_off = off; 5986 nla->la_lowpc = lowpc; 5987 nla->la_cu_psize = re->cu_psize; 5988 nla->la_cu_osize = re->cu_osize; 5989 nla->la_cu_ver = re->cu_ver; 5990 TAILQ_INSERT_BEFORE(la, nla, la_next); 5991 break; 5992 } 5993 } 5994 if (la == NULL) { 5995 if ((nla = malloc(sizeof(*nla))) == NULL) 5996 err(EXIT_FAILURE, "malloc failed"); 5997 nla->la_at = attr_list[i]; 5998 nla->la_off = off; 5999 nla->la_lowpc = lowpc; 6000 nla->la_cu_psize = re->cu_psize; 6001 nla->la_cu_osize = re->cu_osize; 6002 nla->la_cu_ver = re->cu_ver; 6003 TAILQ_INSERT_TAIL(&lalist, nla, la_next); 6004 } 6005 } 6006 6007 cont_search: 6008 /* Search children. */ 6009 ret = dwarf_child(die, &ret_die, &de); 6010 if (ret == DW_DLV_ERROR) 6011 warnx("dwarf_child: %s", dwarf_errmsg(de)); 6012 else if (ret == DW_DLV_OK) 6013 search_loclist_at(re, ret_die, lowpc); 6014 6015 /* Search sibling. */ 6016 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 6017 if (ret == DW_DLV_ERROR) 6018 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 6019 else if (ret == DW_DLV_OK) 6020 search_loclist_at(re, ret_die, lowpc); 6021 } 6022 6023 static void 6024 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr) 6025 { 6026 const char *op_str; 6027 char unk_op[32]; 6028 uint8_t *b, n; 6029 int i; 6030 6031 if (dwarf_get_OP_name(lr->lr_atom, &op_str) != 6032 DW_DLV_OK) { 6033 snprintf(unk_op, sizeof(unk_op), 6034 "[Unknown OP: %#x]", lr->lr_atom); 6035 op_str = unk_op; 6036 } 6037 6038 printf("%s", op_str); 6039 6040 switch (lr->lr_atom) { 6041 case DW_OP_reg0: 6042 case DW_OP_reg1: 6043 case DW_OP_reg2: 6044 case DW_OP_reg3: 6045 case DW_OP_reg4: 6046 case DW_OP_reg5: 6047 case DW_OP_reg6: 6048 case DW_OP_reg7: 6049 case DW_OP_reg8: 6050 case DW_OP_reg9: 6051 case DW_OP_reg10: 6052 case DW_OP_reg11: 6053 case DW_OP_reg12: 6054 case DW_OP_reg13: 6055 case DW_OP_reg14: 6056 case DW_OP_reg15: 6057 case DW_OP_reg16: 6058 case DW_OP_reg17: 6059 case DW_OP_reg18: 6060 case DW_OP_reg19: 6061 case DW_OP_reg20: 6062 case DW_OP_reg21: 6063 case DW_OP_reg22: 6064 case DW_OP_reg23: 6065 case DW_OP_reg24: 6066 case DW_OP_reg25: 6067 case DW_OP_reg26: 6068 case DW_OP_reg27: 6069 case DW_OP_reg28: 6070 case DW_OP_reg29: 6071 case DW_OP_reg30: 6072 case DW_OP_reg31: 6073 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0)); 6074 break; 6075 6076 case DW_OP_deref: 6077 case DW_OP_lit0: 6078 case DW_OP_lit1: 6079 case DW_OP_lit2: 6080 case DW_OP_lit3: 6081 case DW_OP_lit4: 6082 case DW_OP_lit5: 6083 case DW_OP_lit6: 6084 case DW_OP_lit7: 6085 case DW_OP_lit8: 6086 case DW_OP_lit9: 6087 case DW_OP_lit10: 6088 case DW_OP_lit11: 6089 case DW_OP_lit12: 6090 case DW_OP_lit13: 6091 case DW_OP_lit14: 6092 case DW_OP_lit15: 6093 case DW_OP_lit16: 6094 case DW_OP_lit17: 6095 case DW_OP_lit18: 6096 case DW_OP_lit19: 6097 case DW_OP_lit20: 6098 case DW_OP_lit21: 6099 case DW_OP_lit22: 6100 case DW_OP_lit23: 6101 case DW_OP_lit24: 6102 case DW_OP_lit25: 6103 case DW_OP_lit26: 6104 case DW_OP_lit27: 6105 case DW_OP_lit28: 6106 case DW_OP_lit29: 6107 case DW_OP_lit30: 6108 case DW_OP_lit31: 6109 case DW_OP_dup: 6110 case DW_OP_drop: 6111 case DW_OP_over: 6112 case DW_OP_swap: 6113 case DW_OP_rot: 6114 case DW_OP_xderef: 6115 case DW_OP_abs: 6116 case DW_OP_and: 6117 case DW_OP_div: 6118 case DW_OP_minus: 6119 case DW_OP_mod: 6120 case DW_OP_mul: 6121 case DW_OP_neg: 6122 case DW_OP_not: 6123 case DW_OP_or: 6124 case DW_OP_plus: 6125 case DW_OP_shl: 6126 case DW_OP_shr: 6127 case DW_OP_shra: 6128 case DW_OP_xor: 6129 case DW_OP_eq: 6130 case DW_OP_ge: 6131 case DW_OP_gt: 6132 case DW_OP_le: 6133 case DW_OP_lt: 6134 case DW_OP_ne: 6135 case DW_OP_nop: 6136 case DW_OP_push_object_address: 6137 case DW_OP_form_tls_address: 6138 case DW_OP_call_frame_cfa: 6139 case DW_OP_stack_value: 6140 case DW_OP_GNU_push_tls_address: 6141 case DW_OP_GNU_uninit: 6142 break; 6143 6144 case DW_OP_const1u: 6145 case DW_OP_pick: 6146 case DW_OP_deref_size: 6147 case DW_OP_xderef_size: 6148 case DW_OP_const2u: 6149 case DW_OP_bra: 6150 case DW_OP_skip: 6151 case DW_OP_const4u: 6152 case DW_OP_const8u: 6153 case DW_OP_constu: 6154 case DW_OP_plus_uconst: 6155 case DW_OP_regx: 6156 case DW_OP_piece: 6157 printf(": %ju", (uintmax_t) 6158 lr->lr_number); 6159 break; 6160 6161 case DW_OP_const1s: 6162 case DW_OP_const2s: 6163 case DW_OP_const4s: 6164 case DW_OP_const8s: 6165 case DW_OP_consts: 6166 printf(": %jd", (intmax_t) 6167 lr->lr_number); 6168 break; 6169 6170 case DW_OP_breg0: 6171 case DW_OP_breg1: 6172 case DW_OP_breg2: 6173 case DW_OP_breg3: 6174 case DW_OP_breg4: 6175 case DW_OP_breg5: 6176 case DW_OP_breg6: 6177 case DW_OP_breg7: 6178 case DW_OP_breg8: 6179 case DW_OP_breg9: 6180 case DW_OP_breg10: 6181 case DW_OP_breg11: 6182 case DW_OP_breg12: 6183 case DW_OP_breg13: 6184 case DW_OP_breg14: 6185 case DW_OP_breg15: 6186 case DW_OP_breg16: 6187 case DW_OP_breg17: 6188 case DW_OP_breg18: 6189 case DW_OP_breg19: 6190 case DW_OP_breg20: 6191 case DW_OP_breg21: 6192 case DW_OP_breg22: 6193 case DW_OP_breg23: 6194 case DW_OP_breg24: 6195 case DW_OP_breg25: 6196 case DW_OP_breg26: 6197 case DW_OP_breg27: 6198 case DW_OP_breg28: 6199 case DW_OP_breg29: 6200 case DW_OP_breg30: 6201 case DW_OP_breg31: 6202 printf(" (%s): %jd", 6203 dwarf_regname(re, lr->lr_atom - DW_OP_breg0), 6204 (intmax_t) lr->lr_number); 6205 break; 6206 6207 case DW_OP_fbreg: 6208 printf(": %jd", (intmax_t) 6209 lr->lr_number); 6210 break; 6211 6212 case DW_OP_bregx: 6213 printf(": %ju (%s) %jd", 6214 (uintmax_t) lr->lr_number, 6215 dwarf_regname(re, (unsigned int) lr->lr_number), 6216 (intmax_t) lr->lr_number2); 6217 break; 6218 6219 case DW_OP_addr: 6220 case DW_OP_GNU_encoded_addr: 6221 printf(": %#jx", (uintmax_t) 6222 lr->lr_number); 6223 break; 6224 6225 case DW_OP_GNU_implicit_pointer: 6226 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number, 6227 (intmax_t) lr->lr_number2); 6228 break; 6229 6230 case DW_OP_implicit_value: 6231 printf(": %ju byte block:", (uintmax_t) lr->lr_number); 6232 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6233 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++) 6234 printf(" %x", b[i]); 6235 break; 6236 6237 case DW_OP_GNU_entry_value: 6238 printf(": ("); 6239 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2, 6240 lr->lr_number); 6241 putchar(')'); 6242 break; 6243 6244 case DW_OP_GNU_const_type: 6245 printf(": <0x%jx> ", (uintmax_t) lr->lr_number); 6246 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6247 n = *b; 6248 for (i = 1; (uint8_t) i < n; i++) 6249 printf(" %x", b[i]); 6250 break; 6251 6252 case DW_OP_GNU_regval_type: 6253 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number, 6254 dwarf_regname(re, (unsigned int) lr->lr_number), 6255 (uintmax_t) lr->lr_number2); 6256 break; 6257 6258 case DW_OP_GNU_convert: 6259 case DW_OP_GNU_deref_type: 6260 case DW_OP_GNU_parameter_ref: 6261 case DW_OP_GNU_reinterpret: 6262 printf(": <0x%jx>", (uintmax_t) lr->lr_number); 6263 break; 6264 6265 default: 6266 break; 6267 } 6268 } 6269 6270 static void 6271 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len) 6272 { 6273 Dwarf_Locdesc *llbuf; 6274 Dwarf_Signed lcnt; 6275 Dwarf_Error de; 6276 int i; 6277 6278 if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize, 6279 re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) { 6280 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de)); 6281 return; 6282 } 6283 6284 for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) { 6285 dump_dwarf_loc(re, &llbuf->ld_s[i]); 6286 if (i < llbuf->ld_cents - 1) 6287 printf("; "); 6288 } 6289 6290 dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK); 6291 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC); 6292 } 6293 6294 static void 6295 dump_dwarf_loclist(struct readelf *re) 6296 { 6297 Dwarf_Die die; 6298 Dwarf_Locdesc **llbuf; 6299 Dwarf_Unsigned lowpc; 6300 Dwarf_Signed lcnt; 6301 Dwarf_Half tag, version, pointer_size, off_size; 6302 Dwarf_Error de; 6303 struct loc_at *la; 6304 int i, j, ret, has_content; 6305 6306 /* Search .debug_info section. */ 6307 while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL, 6308 &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) { 6309 set_cu_context(re, pointer_size, off_size, version); 6310 die = NULL; 6311 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 6312 continue; 6313 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6314 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 6315 continue; 6316 } 6317 /* XXX: What about DW_TAG_partial_unit? */ 6318 lowpc = 0; 6319 if (tag == DW_TAG_compile_unit) { 6320 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6321 &lowpc, &de) != DW_DLV_OK) 6322 lowpc = 0; 6323 } 6324 6325 /* Search attributes for reference to .debug_loc section. */ 6326 search_loclist_at(re, die, lowpc); 6327 } 6328 if (ret == DW_DLV_ERROR) 6329 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6330 6331 /* Search .debug_types section. */ 6332 do { 6333 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL, 6334 &version, NULL, &pointer_size, &off_size, NULL, NULL, 6335 NULL, NULL, &de)) == DW_DLV_OK) { 6336 set_cu_context(re, pointer_size, off_size, version); 6337 die = NULL; 6338 if (dwarf_siblingof(re->dbg, die, &die, &de) != 6339 DW_DLV_OK) 6340 continue; 6341 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6342 warnx("dwarf_tag failed: %s", 6343 dwarf_errmsg(de)); 6344 continue; 6345 } 6346 6347 lowpc = 0; 6348 if (tag == DW_TAG_type_unit) { 6349 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6350 &lowpc, &de) != DW_DLV_OK) 6351 lowpc = 0; 6352 } 6353 6354 /* 6355 * Search attributes for reference to .debug_loc 6356 * section. 6357 */ 6358 search_loclist_at(re, die, lowpc); 6359 } 6360 if (ret == DW_DLV_ERROR) 6361 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6362 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 6363 6364 if (TAILQ_EMPTY(&lalist)) 6365 return; 6366 6367 has_content = 0; 6368 TAILQ_FOREACH(la, &lalist, la_next) { 6369 if ((ret = dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de)) != 6370 DW_DLV_OK) { 6371 if (ret != DW_DLV_NO_ENTRY) 6372 warnx("dwarf_loclist_n failed: %s", 6373 dwarf_errmsg(de)); 6374 continue; 6375 } 6376 if (!has_content) { 6377 has_content = 1; 6378 printf("\nContents of section .debug_loc:\n"); 6379 printf(" Offset Begin End Expression\n"); 6380 } 6381 set_cu_context(re, la->la_cu_psize, la->la_cu_osize, 6382 la->la_cu_ver); 6383 for (i = 0; i < lcnt; i++) { 6384 printf(" %8.8jx ", (uintmax_t) la->la_off); 6385 if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) { 6386 printf("<End of list>\n"); 6387 continue; 6388 } 6389 6390 /* TODO: handle base selection entry. */ 6391 6392 printf("%8.8jx %8.8jx ", 6393 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc), 6394 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc)); 6395 6396 putchar('('); 6397 for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) { 6398 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]); 6399 if (j < llbuf[i]->ld_cents - 1) 6400 printf("; "); 6401 } 6402 putchar(')'); 6403 6404 if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc) 6405 printf(" (start == end)"); 6406 putchar('\n'); 6407 } 6408 for (i = 0; i < lcnt; i++) { 6409 dwarf_dealloc(re->dbg, llbuf[i]->ld_s, 6410 DW_DLA_LOC_BLOCK); 6411 dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC); 6412 } 6413 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST); 6414 } 6415 6416 if (!has_content) 6417 printf("\nSection '.debug_loc' has no debugging data.\n"); 6418 } 6419 6420 /* 6421 * Retrieve a string using string table section index and the string offset. 6422 */ 6423 static const char* 6424 get_string(struct readelf *re, int strtab, size_t off) 6425 { 6426 const char *name; 6427 6428 if ((name = elf_strptr(re->elf, strtab, off)) == NULL) 6429 return (""); 6430 6431 return (name); 6432 } 6433 6434 /* 6435 * Retrieve the name of a symbol using the section index of the symbol 6436 * table and the index of the symbol within that table. 6437 */ 6438 static const char * 6439 get_symbol_name(struct readelf *re, int symtab, int i) 6440 { 6441 struct section *s; 6442 const char *name; 6443 GElf_Sym sym; 6444 Elf_Data *data; 6445 int elferr; 6446 6447 s = &re->sl[symtab]; 6448 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6449 return (""); 6450 (void) elf_errno(); 6451 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6452 elferr = elf_errno(); 6453 if (elferr != 0) 6454 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6455 return (""); 6456 } 6457 if (gelf_getsym(data, i, &sym) != &sym) 6458 return (""); 6459 /* Return section name for STT_SECTION symbol. */ 6460 if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) { 6461 if (sym.st_shndx < re->shnum && 6462 re->sl[sym.st_shndx].name != NULL) 6463 return (re->sl[sym.st_shndx].name); 6464 return (""); 6465 } 6466 if (s->link >= re->shnum || 6467 (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL) 6468 return (""); 6469 6470 return (name); 6471 } 6472 6473 static uint64_t 6474 get_symbol_value(struct readelf *re, int symtab, int i) 6475 { 6476 struct section *s; 6477 GElf_Sym sym; 6478 Elf_Data *data; 6479 int elferr; 6480 6481 s = &re->sl[symtab]; 6482 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6483 return (0); 6484 (void) elf_errno(); 6485 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6486 elferr = elf_errno(); 6487 if (elferr != 0) 6488 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6489 return (0); 6490 } 6491 if (gelf_getsym(data, i, &sym) != &sym) 6492 return (0); 6493 6494 return (sym.st_value); 6495 } 6496 6497 static void 6498 hex_dump(struct readelf *re) 6499 { 6500 struct section *s; 6501 Elf_Data *d; 6502 uint8_t *buf; 6503 size_t sz, nbytes; 6504 uint64_t addr; 6505 int elferr, i, j; 6506 6507 for (i = 1; (size_t) i < re->shnum; i++) { 6508 s = &re->sl[i]; 6509 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL) 6510 continue; 6511 (void) elf_errno(); 6512 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6513 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6514 elferr = elf_errno(); 6515 if (elferr != 0) 6516 warnx("elf_getdata failed: %s", 6517 elf_errmsg(elferr)); 6518 continue; 6519 } 6520 (void) elf_errno(); 6521 if (d->d_size <= 0 || d->d_buf == NULL) { 6522 printf("\nSection '%s' has no data to dump.\n", 6523 s->name); 6524 continue; 6525 } 6526 buf = d->d_buf; 6527 sz = d->d_size; 6528 addr = s->addr; 6529 printf("\nHex dump of section '%s':\n", s->name); 6530 while (sz > 0) { 6531 printf(" 0x%8.8jx ", (uintmax_t)addr); 6532 nbytes = sz > 16? 16 : sz; 6533 for (j = 0; j < 16; j++) { 6534 if ((size_t)j < nbytes) 6535 printf("%2.2x", buf[j]); 6536 else 6537 printf(" "); 6538 if ((j & 3) == 3) 6539 printf(" "); 6540 } 6541 for (j = 0; (size_t)j < nbytes; j++) { 6542 if (isprint(buf[j])) 6543 printf("%c", buf[j]); 6544 else 6545 printf("."); 6546 } 6547 printf("\n"); 6548 buf += nbytes; 6549 addr += nbytes; 6550 sz -= nbytes; 6551 } 6552 } 6553 } 6554 6555 static void 6556 str_dump(struct readelf *re) 6557 { 6558 struct section *s; 6559 Elf_Data *d; 6560 unsigned char *start, *end, *buf_end; 6561 unsigned int len; 6562 int i, j, elferr, found; 6563 6564 for (i = 1; (size_t) i < re->shnum; i++) { 6565 s = &re->sl[i]; 6566 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL) 6567 continue; 6568 (void) elf_errno(); 6569 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6570 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6571 elferr = elf_errno(); 6572 if (elferr != 0) 6573 warnx("elf_getdata failed: %s", 6574 elf_errmsg(elferr)); 6575 continue; 6576 } 6577 (void) elf_errno(); 6578 if (d->d_size <= 0 || d->d_buf == NULL) { 6579 printf("\nSection '%s' has no data to dump.\n", 6580 s->name); 6581 continue; 6582 } 6583 buf_end = (unsigned char *) d->d_buf + d->d_size; 6584 start = (unsigned char *) d->d_buf; 6585 found = 0; 6586 printf("\nString dump of section '%s':\n", s->name); 6587 for (;;) { 6588 while (start < buf_end && !isprint(*start)) 6589 start++; 6590 if (start >= buf_end) 6591 break; 6592 end = start + 1; 6593 while (end < buf_end && isprint(*end)) 6594 end++; 6595 printf(" [%6lx] ", 6596 (long) (start - (unsigned char *) d->d_buf)); 6597 len = end - start; 6598 for (j = 0; (unsigned int) j < len; j++) 6599 putchar(start[j]); 6600 putchar('\n'); 6601 found = 1; 6602 if (end >= buf_end) 6603 break; 6604 start = end + 1; 6605 } 6606 if (!found) 6607 printf(" No strings found in this section."); 6608 putchar('\n'); 6609 } 6610 } 6611 6612 static void 6613 load_sections(struct readelf *re) 6614 { 6615 struct section *s; 6616 const char *name; 6617 Elf_Scn *scn; 6618 GElf_Shdr sh; 6619 size_t shstrndx, ndx; 6620 int elferr; 6621 6622 /* Allocate storage for internal section list. */ 6623 if (!elf_getshnum(re->elf, &re->shnum)) { 6624 warnx("elf_getshnum failed: %s", elf_errmsg(-1)); 6625 return; 6626 } 6627 if (re->sl != NULL) 6628 free(re->sl); 6629 if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL) 6630 err(EXIT_FAILURE, "calloc failed"); 6631 6632 /* Get the index of .shstrtab section. */ 6633 if (!elf_getshstrndx(re->elf, &shstrndx)) { 6634 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1)); 6635 return; 6636 } 6637 6638 if ((scn = elf_getscn(re->elf, 0)) == NULL) 6639 return; 6640 6641 (void) elf_errno(); 6642 do { 6643 if (gelf_getshdr(scn, &sh) == NULL) { 6644 warnx("gelf_getshdr failed: %s", elf_errmsg(-1)); 6645 (void) elf_errno(); 6646 continue; 6647 } 6648 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) { 6649 (void) elf_errno(); 6650 name = "<no-name>"; 6651 } 6652 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) { 6653 if ((elferr = elf_errno()) != 0) { 6654 warnx("elf_ndxscn failed: %s", 6655 elf_errmsg(elferr)); 6656 continue; 6657 } 6658 } 6659 if (ndx >= re->shnum) { 6660 warnx("section index of '%s' out of range", name); 6661 continue; 6662 } 6663 if (sh.sh_link >= re->shnum) 6664 warnx("section link %llu of '%s' out of range", 6665 (unsigned long long)sh.sh_link, name); 6666 s = &re->sl[ndx]; 6667 s->name = name; 6668 s->scn = scn; 6669 s->off = sh.sh_offset; 6670 s->sz = sh.sh_size; 6671 s->entsize = sh.sh_entsize; 6672 s->align = sh.sh_addralign; 6673 s->type = sh.sh_type; 6674 s->flags = sh.sh_flags; 6675 s->addr = sh.sh_addr; 6676 s->link = sh.sh_link; 6677 s->info = sh.sh_info; 6678 } while ((scn = elf_nextscn(re->elf, scn)) != NULL); 6679 elferr = elf_errno(); 6680 if (elferr != 0) 6681 warnx("elf_nextscn failed: %s", elf_errmsg(elferr)); 6682 } 6683 6684 static void 6685 unload_sections(struct readelf *re) 6686 { 6687 6688 if (re->sl != NULL) { 6689 free(re->sl); 6690 re->sl = NULL; 6691 } 6692 re->shnum = 0; 6693 re->vd_s = NULL; 6694 re->vn_s = NULL; 6695 re->vs_s = NULL; 6696 re->vs = NULL; 6697 re->vs_sz = 0; 6698 if (re->ver != NULL) { 6699 free(re->ver); 6700 re->ver = NULL; 6701 re->ver_sz = 0; 6702 } 6703 } 6704 6705 static void 6706 dump_elf(struct readelf *re) 6707 { 6708 6709 /* Fetch ELF header. No need to continue if it fails. */ 6710 if (gelf_getehdr(re->elf, &re->ehdr) == NULL) { 6711 warnx("gelf_getehdr failed: %s", elf_errmsg(-1)); 6712 return; 6713 } 6714 if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) { 6715 warnx("gelf_getclass failed: %s", elf_errmsg(-1)); 6716 return; 6717 } 6718 if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) { 6719 re->dw_read = _read_msb; 6720 re->dw_decode = _decode_msb; 6721 } else { 6722 re->dw_read = _read_lsb; 6723 re->dw_decode = _decode_lsb; 6724 } 6725 6726 if (re->options & ~RE_H) 6727 load_sections(re); 6728 if ((re->options & RE_VV) || (re->options & RE_S)) 6729 search_ver(re); 6730 if (re->options & RE_H) 6731 dump_ehdr(re); 6732 if (re->options & RE_L) 6733 dump_phdr(re); 6734 if (re->options & RE_SS) 6735 dump_shdr(re); 6736 if (re->options & RE_G) 6737 dump_section_groups(re); 6738 if (re->options & RE_D) 6739 dump_dynamic(re); 6740 if (re->options & RE_R) 6741 dump_reloc(re); 6742 if (re->options & RE_S) 6743 dump_symtabs(re); 6744 if (re->options & RE_N) 6745 dump_notes(re); 6746 if (re->options & RE_II) 6747 dump_hash(re); 6748 if (re->options & RE_X) 6749 hex_dump(re); 6750 if (re->options & RE_P) 6751 str_dump(re); 6752 if (re->options & RE_VV) 6753 dump_ver(re); 6754 if (re->options & RE_AA) 6755 dump_arch_specific_info(re); 6756 if (re->options & RE_W) 6757 dump_dwarf(re); 6758 if (re->options & ~RE_H) 6759 unload_sections(re); 6760 } 6761 6762 static void 6763 dump_dwarf(struct readelf *re) 6764 { 6765 struct loc_at *la, *_la; 6766 Dwarf_Error de; 6767 int error; 6768 6769 if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) { 6770 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL) 6771 errx(EXIT_FAILURE, "dwarf_elf_init failed: %s", 6772 dwarf_errmsg(de)); 6773 return; 6774 } 6775 6776 if (re->dop & DW_A) 6777 dump_dwarf_abbrev(re); 6778 if (re->dop & DW_L) 6779 dump_dwarf_line(re); 6780 if (re->dop & DW_LL) 6781 dump_dwarf_line_decoded(re); 6782 if (re->dop & DW_I) { 6783 dump_dwarf_info(re, 0); 6784 dump_dwarf_info(re, 1); 6785 } 6786 if (re->dop & DW_P) 6787 dump_dwarf_pubnames(re); 6788 if (re->dop & DW_R) 6789 dump_dwarf_aranges(re); 6790 if (re->dop & DW_RR) 6791 dump_dwarf_ranges(re); 6792 if (re->dop & DW_M) 6793 dump_dwarf_macinfo(re); 6794 if (re->dop & DW_F) 6795 dump_dwarf_frame(re, 0); 6796 else if (re->dop & DW_FF) 6797 dump_dwarf_frame(re, 1); 6798 if (re->dop & DW_S) 6799 dump_dwarf_str(re); 6800 if (re->dop & DW_O) 6801 dump_dwarf_loclist(re); 6802 6803 TAILQ_FOREACH_SAFE(la, &lalist, la_next, _la) { 6804 TAILQ_REMOVE(&lalist, la, la_next); 6805 free(la); 6806 } 6807 6808 dwarf_finish(re->dbg, &de); 6809 } 6810 6811 static void 6812 dump_ar(struct readelf *re, int fd) 6813 { 6814 Elf_Arsym *arsym; 6815 Elf_Arhdr *arhdr; 6816 Elf_Cmd cmd; 6817 Elf *e; 6818 size_t sz; 6819 off_t off; 6820 int i; 6821 6822 re->ar = re->elf; 6823 6824 if (re->options & RE_C) { 6825 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) { 6826 warnx("elf_getarsym() failed: %s", elf_errmsg(-1)); 6827 goto process_members; 6828 } 6829 printf("Index of archive %s: (%ju entries)\n", re->filename, 6830 (uintmax_t) sz - 1); 6831 off = 0; 6832 for (i = 0; (size_t) i < sz; i++) { 6833 if (arsym[i].as_name == NULL) 6834 break; 6835 if (arsym[i].as_off != off) { 6836 off = arsym[i].as_off; 6837 if (elf_rand(re->ar, off) != off) { 6838 warnx("elf_rand() failed: %s", 6839 elf_errmsg(-1)); 6840 continue; 6841 } 6842 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) == 6843 NULL) { 6844 warnx("elf_begin() failed: %s", 6845 elf_errmsg(-1)); 6846 continue; 6847 } 6848 if ((arhdr = elf_getarhdr(e)) == NULL) { 6849 warnx("elf_getarhdr() failed: %s", 6850 elf_errmsg(-1)); 6851 elf_end(e); 6852 continue; 6853 } 6854 printf("Binary %s(%s) contains:\n", 6855 re->filename, arhdr->ar_name); 6856 } 6857 printf("\t%s\n", arsym[i].as_name); 6858 } 6859 if (elf_rand(re->ar, SARMAG) != SARMAG) { 6860 warnx("elf_rand() failed: %s", elf_errmsg(-1)); 6861 return; 6862 } 6863 } 6864 6865 process_members: 6866 6867 if ((re->options & ~RE_C) == 0) 6868 return; 6869 6870 cmd = ELF_C_READ; 6871 while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) { 6872 if ((arhdr = elf_getarhdr(re->elf)) == NULL) { 6873 warnx("elf_getarhdr() failed: %s", elf_errmsg(-1)); 6874 goto next_member; 6875 } 6876 if (strcmp(arhdr->ar_name, "/") == 0 || 6877 strcmp(arhdr->ar_name, "//") == 0 || 6878 strcmp(arhdr->ar_name, "__.SYMDEF") == 0) 6879 goto next_member; 6880 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name); 6881 dump_elf(re); 6882 6883 next_member: 6884 cmd = elf_next(re->elf); 6885 elf_end(re->elf); 6886 } 6887 re->elf = re->ar; 6888 } 6889 6890 static void 6891 dump_object(struct readelf *re) 6892 { 6893 int fd; 6894 6895 if ((fd = open(re->filename, O_RDONLY)) == -1) { 6896 warn("open %s failed", re->filename); 6897 return; 6898 } 6899 6900 if ((re->flags & DISPLAY_FILENAME) != 0) 6901 printf("\nFile: %s\n", re->filename); 6902 6903 if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { 6904 warnx("elf_begin() failed: %s", elf_errmsg(-1)); 6905 return; 6906 } 6907 6908 switch (elf_kind(re->elf)) { 6909 case ELF_K_NONE: 6910 warnx("Not an ELF file."); 6911 return; 6912 case ELF_K_ELF: 6913 dump_elf(re); 6914 break; 6915 case ELF_K_AR: 6916 dump_ar(re, fd); 6917 break; 6918 default: 6919 warnx("Internal: libelf returned unknown elf kind."); 6920 return; 6921 } 6922 6923 elf_end(re->elf); 6924 } 6925 6926 static void 6927 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 6928 { 6929 struct dumpop *d; 6930 6931 if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) { 6932 if ((d = calloc(1, sizeof(*d))) == NULL) 6933 err(EXIT_FAILURE, "calloc failed"); 6934 if (t == DUMP_BY_INDEX) 6935 d->u.si = si; 6936 else 6937 d->u.sn = sn; 6938 d->type = t; 6939 d->op = op; 6940 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list); 6941 } else 6942 d->op |= op; 6943 } 6944 6945 static struct dumpop * 6946 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 6947 { 6948 struct dumpop *d; 6949 6950 STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) { 6951 if ((op == -1 || op & d->op) && 6952 (t == -1 || (unsigned) t == d->type)) { 6953 if ((d->type == DUMP_BY_INDEX && d->u.si == si) || 6954 (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn))) 6955 return (d); 6956 } 6957 } 6958 6959 return (NULL); 6960 } 6961 6962 static struct { 6963 const char *ln; 6964 char sn; 6965 int value; 6966 } dwarf_op[] = { 6967 {"rawline", 'l', DW_L}, 6968 {"decodedline", 'L', DW_LL}, 6969 {"info", 'i', DW_I}, 6970 {"abbrev", 'a', DW_A}, 6971 {"pubnames", 'p', DW_P}, 6972 {"aranges", 'r', DW_R}, 6973 {"ranges", 'r', DW_R}, 6974 {"Ranges", 'R', DW_RR}, 6975 {"macro", 'm', DW_M}, 6976 {"frames", 'f', DW_F}, 6977 {"frames-interp", 'F', DW_FF}, 6978 {"str", 's', DW_S}, 6979 {"loc", 'o', DW_O}, 6980 {NULL, 0, 0} 6981 }; 6982 6983 static void 6984 parse_dwarf_op_short(struct readelf *re, const char *op) 6985 { 6986 int i; 6987 6988 if (op == NULL) { 6989 re->dop |= DW_DEFAULT_OPTIONS; 6990 return; 6991 } 6992 6993 for (; *op != '\0'; op++) { 6994 for (i = 0; dwarf_op[i].ln != NULL; i++) { 6995 if (dwarf_op[i].sn == *op) { 6996 re->dop |= dwarf_op[i].value; 6997 break; 6998 } 6999 } 7000 } 7001 } 7002 7003 static void 7004 parse_dwarf_op_long(struct readelf *re, const char *op) 7005 { 7006 char *p, *token, *bp; 7007 int i; 7008 7009 if (op == NULL) { 7010 re->dop |= DW_DEFAULT_OPTIONS; 7011 return; 7012 } 7013 7014 if ((p = strdup(op)) == NULL) 7015 err(EXIT_FAILURE, "strdup failed"); 7016 bp = p; 7017 7018 while ((token = strsep(&p, ",")) != NULL) { 7019 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7020 if (!strcmp(token, dwarf_op[i].ln)) { 7021 re->dop |= dwarf_op[i].value; 7022 break; 7023 } 7024 } 7025 } 7026 7027 free(bp); 7028 } 7029 7030 static uint64_t 7031 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7032 { 7033 uint64_t ret; 7034 uint8_t *src; 7035 7036 src = (uint8_t *) d->d_buf + *offsetp; 7037 7038 ret = 0; 7039 switch (bytes_to_read) { 7040 case 8: 7041 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7042 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7043 /* FALLTHROUGH */ 7044 case 4: 7045 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7046 /* FALLTHROUGH */ 7047 case 2: 7048 ret |= ((uint64_t) src[1]) << 8; 7049 /* FALLTHROUGH */ 7050 case 1: 7051 ret |= src[0]; 7052 break; 7053 default: 7054 return (0); 7055 } 7056 7057 *offsetp += bytes_to_read; 7058 7059 return (ret); 7060 } 7061 7062 static uint64_t 7063 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7064 { 7065 uint64_t ret; 7066 uint8_t *src; 7067 7068 src = (uint8_t *) d->d_buf + *offsetp; 7069 7070 switch (bytes_to_read) { 7071 case 1: 7072 ret = src[0]; 7073 break; 7074 case 2: 7075 ret = src[1] | ((uint64_t) src[0]) << 8; 7076 break; 7077 case 4: 7078 ret = src[3] | ((uint64_t) src[2]) << 8; 7079 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7080 break; 7081 case 8: 7082 ret = src[7] | ((uint64_t) src[6]) << 8; 7083 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7084 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7085 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7086 break; 7087 default: 7088 return (0); 7089 } 7090 7091 *offsetp += bytes_to_read; 7092 7093 return (ret); 7094 } 7095 7096 static uint64_t 7097 _decode_lsb(uint8_t **data, int bytes_to_read) 7098 { 7099 uint64_t ret; 7100 uint8_t *src; 7101 7102 src = *data; 7103 7104 ret = 0; 7105 switch (bytes_to_read) { 7106 case 8: 7107 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7108 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7109 /* FALLTHROUGH */ 7110 case 4: 7111 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7112 /* FALLTHROUGH */ 7113 case 2: 7114 ret |= ((uint64_t) src[1]) << 8; 7115 /* FALLTHROUGH */ 7116 case 1: 7117 ret |= src[0]; 7118 break; 7119 default: 7120 return (0); 7121 } 7122 7123 *data += bytes_to_read; 7124 7125 return (ret); 7126 } 7127 7128 static uint64_t 7129 _decode_msb(uint8_t **data, int bytes_to_read) 7130 { 7131 uint64_t ret; 7132 uint8_t *src; 7133 7134 src = *data; 7135 7136 ret = 0; 7137 switch (bytes_to_read) { 7138 case 1: 7139 ret = src[0]; 7140 break; 7141 case 2: 7142 ret = src[1] | ((uint64_t) src[0]) << 8; 7143 break; 7144 case 4: 7145 ret = src[3] | ((uint64_t) src[2]) << 8; 7146 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7147 break; 7148 case 8: 7149 ret = src[7] | ((uint64_t) src[6]) << 8; 7150 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7151 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7152 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7153 break; 7154 default: 7155 return (0); 7156 break; 7157 } 7158 7159 *data += bytes_to_read; 7160 7161 return (ret); 7162 } 7163 7164 static int64_t 7165 _decode_sleb128(uint8_t **dp, uint8_t *dpe) 7166 { 7167 int64_t ret = 0; 7168 uint8_t b = 0; 7169 int shift = 0; 7170 7171 uint8_t *src = *dp; 7172 7173 do { 7174 if (src >= dpe) 7175 break; 7176 b = *src++; 7177 ret |= ((b & 0x7f) << shift); 7178 shift += 7; 7179 } while ((b & 0x80) != 0); 7180 7181 if (shift < 32 && (b & 0x40) != 0) 7182 ret |= (-1 << shift); 7183 7184 *dp = src; 7185 7186 return (ret); 7187 } 7188 7189 static uint64_t 7190 _decode_uleb128(uint8_t **dp, uint8_t *dpe) 7191 { 7192 uint64_t ret = 0; 7193 uint8_t b; 7194 int shift = 0; 7195 7196 uint8_t *src = *dp; 7197 7198 do { 7199 if (src >= dpe) 7200 break; 7201 b = *src++; 7202 ret |= ((b & 0x7f) << shift); 7203 shift += 7; 7204 } while ((b & 0x80) != 0); 7205 7206 *dp = src; 7207 7208 return (ret); 7209 } 7210 7211 static void 7212 readelf_version(void) 7213 { 7214 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), 7215 elftc_version()); 7216 exit(EXIT_SUCCESS); 7217 } 7218 7219 #define USAGE_MESSAGE "\ 7220 Usage: %s [options] file...\n\ 7221 Display information about ELF objects and ar(1) archives.\n\n\ 7222 Options:\n\ 7223 -a | --all Equivalent to specifying options '-dhIlrsASV'.\n\ 7224 -c | --archive-index Print the archive symbol table for archives.\n\ 7225 -d | --dynamic Print the contents of SHT_DYNAMIC sections.\n\ 7226 -e | --headers Print all headers in the object.\n\ 7227 -g | --section-groups Print the contents of the section groups.\n\ 7228 -h | --file-header Print the file header for the object.\n\ 7229 -l | --program-headers Print the PHDR table for the object.\n\ 7230 -n | --notes Print the contents of SHT_NOTE sections.\n\ 7231 -p INDEX | --string-dump=INDEX\n\ 7232 Print the contents of section at index INDEX.\n\ 7233 -r | --relocs Print relocation information.\n\ 7234 -s | --syms | --symbols Print symbol tables.\n\ 7235 -t | --section-details Print additional information about sections.\n\ 7236 -v | --version Print a version identifier and exit.\n\ 7237 -w[afilmoprsFLR] | --debug-dump={abbrev,aranges,decodedline,frames,\n\ 7238 frames-interp,info,loc,macro,pubnames,\n\ 7239 ranges,Ranges,rawline,str}\n\ 7240 Display DWARF information.\n\ 7241 -x INDEX | --hex-dump=INDEX\n\ 7242 Display contents of a section as hexadecimal.\n\ 7243 -A | --arch-specific (accepted, but ignored)\n\ 7244 -D | --use-dynamic Print the symbol table specified by the DT_SYMTAB\n\ 7245 entry in the \".dynamic\" section.\n\ 7246 -H | --help Print a help message.\n\ 7247 -I | --histogram Print information on bucket list lengths for \n\ 7248 hash sections.\n\ 7249 -N | --full-section-name (accepted, but ignored)\n\ 7250 -S | --sections | --section-headers\n\ 7251 Print information about section headers.\n\ 7252 -V | --version-info Print symbol versoning information.\n\ 7253 -W | --wide Print information without wrapping long lines.\n" 7254 7255 7256 static void 7257 readelf_usage(int status) 7258 { 7259 fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME()); 7260 exit(status); 7261 } 7262 7263 int 7264 main(int argc, char **argv) 7265 { 7266 struct readelf *re, re_storage; 7267 unsigned long si; 7268 int opt, i; 7269 char *ep; 7270 7271 re = &re_storage; 7272 memset(re, 0, sizeof(*re)); 7273 STAILQ_INIT(&re->v_dumpop); 7274 7275 while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:", 7276 longopts, NULL)) != -1) { 7277 switch(opt) { 7278 case '?': 7279 readelf_usage(EXIT_SUCCESS); 7280 break; 7281 case 'A': 7282 re->options |= RE_AA; 7283 break; 7284 case 'a': 7285 re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II | 7286 RE_L | RE_R | RE_SS | RE_S | RE_VV; 7287 break; 7288 case 'c': 7289 re->options |= RE_C; 7290 break; 7291 case 'D': 7292 re->options |= RE_DD; 7293 break; 7294 case 'd': 7295 re->options |= RE_D; 7296 break; 7297 case 'e': 7298 re->options |= RE_H | RE_L | RE_SS; 7299 break; 7300 case 'g': 7301 re->options |= RE_G; 7302 break; 7303 case 'H': 7304 readelf_usage(EXIT_SUCCESS); 7305 break; 7306 case 'h': 7307 re->options |= RE_H; 7308 break; 7309 case 'I': 7310 re->options |= RE_II; 7311 break; 7312 case 'i': 7313 /* Not implemented yet. */ 7314 break; 7315 case 'l': 7316 re->options |= RE_L; 7317 break; 7318 case 'N': 7319 re->options |= RE_NN; 7320 break; 7321 case 'n': 7322 re->options |= RE_N; 7323 break; 7324 case 'p': 7325 re->options |= RE_P; 7326 si = strtoul(optarg, &ep, 10); 7327 if (*ep == '\0') 7328 add_dumpop(re, (size_t) si, NULL, STR_DUMP, 7329 DUMP_BY_INDEX); 7330 else 7331 add_dumpop(re, 0, optarg, STR_DUMP, 7332 DUMP_BY_NAME); 7333 break; 7334 case 'r': 7335 re->options |= RE_R; 7336 break; 7337 case 'S': 7338 re->options |= RE_SS; 7339 break; 7340 case 's': 7341 re->options |= RE_S; 7342 break; 7343 case 't': 7344 re->options |= RE_T; 7345 break; 7346 case 'u': 7347 re->options |= RE_U; 7348 break; 7349 case 'V': 7350 re->options |= RE_VV; 7351 break; 7352 case 'v': 7353 readelf_version(); 7354 break; 7355 case 'W': 7356 re->options |= RE_WW; 7357 break; 7358 case 'w': 7359 re->options |= RE_W; 7360 parse_dwarf_op_short(re, optarg); 7361 break; 7362 case 'x': 7363 re->options |= RE_X; 7364 si = strtoul(optarg, &ep, 10); 7365 if (*ep == '\0') 7366 add_dumpop(re, (size_t) si, NULL, HEX_DUMP, 7367 DUMP_BY_INDEX); 7368 else 7369 add_dumpop(re, 0, optarg, HEX_DUMP, 7370 DUMP_BY_NAME); 7371 break; 7372 case OPTION_DEBUG_DUMP: 7373 re->options |= RE_W; 7374 parse_dwarf_op_long(re, optarg); 7375 } 7376 } 7377 7378 argv += optind; 7379 argc -= optind; 7380 7381 if (argc == 0 || re->options == 0) 7382 readelf_usage(EXIT_FAILURE); 7383 7384 if (argc > 1) 7385 re->flags |= DISPLAY_FILENAME; 7386 7387 if (elf_version(EV_CURRENT) == EV_NONE) 7388 errx(EXIT_FAILURE, "ELF library initialization failed: %s", 7389 elf_errmsg(-1)); 7390 7391 for (i = 0; i < argc; i++) { 7392 re->filename = argv[i]; 7393 dump_object(re); 7394 } 7395 7396 exit(EXIT_SUCCESS); 7397 } 7398