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