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 30 #include <ar.h> 31 #include <assert.h> 32 #include <capsicum_helpers.h> 33 #include <ctype.h> 34 #include <dwarf.h> 35 #include <err.h> 36 #include <fcntl.h> 37 #include <gelf.h> 38 #include <getopt.h> 39 #include <libdwarf.h> 40 #include <libelftc.h> 41 #include <libgen.h> 42 #include <stdarg.h> 43 #include <stdint.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <time.h> 48 #include <unistd.h> 49 50 #include <libcasper.h> 51 #include <casper/cap_fileargs.h> 52 53 #include "_elftc.h" 54 55 ELFTC_VCSID("$Id: readelf.c 3649 2018-11-24 03:26:23Z emaste $"); 56 57 /* Backwards compatability for older FreeBSD releases. */ 58 #ifndef STB_GNU_UNIQUE 59 #define STB_GNU_UNIQUE 10 60 #endif 61 #ifndef STT_SPARC_REGISTER 62 #define STT_SPARC_REGISTER 13 63 #endif 64 65 66 /* 67 * readelf(1) options. 68 */ 69 #define RE_AA 0x00000001 70 #define RE_C 0x00000002 71 #define RE_DD 0x00000004 72 #define RE_D 0x00000008 73 #define RE_G 0x00000010 74 #define RE_H 0x00000020 75 #define RE_II 0x00000040 76 #define RE_I 0x00000080 77 #define RE_L 0x00000100 78 #define RE_NN 0x00000200 79 #define RE_N 0x00000400 80 #define RE_P 0x00000800 81 #define RE_R 0x00001000 82 #define RE_SS 0x00002000 83 #define RE_S 0x00004000 84 #define RE_T 0x00008000 85 #define RE_U 0x00010000 86 #define RE_VV 0x00020000 87 #define RE_WW 0x00040000 88 #define RE_W 0x00080000 89 #define RE_X 0x00100000 90 91 /* 92 * dwarf dump options. 93 */ 94 #define DW_A 0x00000001 95 #define DW_FF 0x00000002 96 #define DW_F 0x00000004 97 #define DW_I 0x00000008 98 #define DW_LL 0x00000010 99 #define DW_L 0x00000020 100 #define DW_M 0x00000040 101 #define DW_O 0x00000080 102 #define DW_P 0x00000100 103 #define DW_RR 0x00000200 104 #define DW_R 0x00000400 105 #define DW_S 0x00000800 106 107 #define DW_DEFAULT_OPTIONS (DW_A | DW_F | DW_I | DW_L | DW_O | DW_P | \ 108 DW_R | DW_RR | DW_S) 109 110 /* 111 * readelf(1) run control flags. 112 */ 113 #define DISPLAY_FILENAME 0x0001 114 115 /* 116 * Internal data structure for sections. 117 */ 118 struct section { 119 const char *name; /* section name */ 120 Elf_Scn *scn; /* section scn */ 121 uint64_t off; /* section offset */ 122 uint64_t sz; /* section size */ 123 uint64_t entsize; /* section entsize */ 124 uint64_t align; /* section alignment */ 125 uint64_t type; /* section type */ 126 uint64_t flags; /* section flags */ 127 uint64_t addr; /* section virtual addr */ 128 uint32_t link; /* section link ndx */ 129 uint32_t info; /* section info ndx */ 130 }; 131 132 struct dumpop { 133 union { 134 size_t si; /* section index */ 135 const char *sn; /* section name */ 136 } u; 137 enum { 138 DUMP_BY_INDEX = 0, 139 DUMP_BY_NAME 140 } type; /* dump type */ 141 #define HEX_DUMP 0x0001 142 #define STR_DUMP 0x0002 143 int op; /* dump operation */ 144 STAILQ_ENTRY(dumpop) dumpop_list; 145 }; 146 147 struct symver { 148 const char *name; 149 int type; 150 }; 151 152 /* 153 * Structure encapsulates the global data for readelf(1). 154 */ 155 struct readelf { 156 const char *filename; /* current processing file. */ 157 int options; /* command line options. */ 158 int flags; /* run control flags. */ 159 int dop; /* dwarf dump options. */ 160 Elf *elf; /* underlying ELF descriptor. */ 161 Elf *ar; /* archive ELF descriptor. */ 162 Dwarf_Debug dbg; /* DWARF handle. */ 163 Dwarf_Half cu_psize; /* DWARF CU pointer size. */ 164 Dwarf_Half cu_osize; /* DWARF CU offset size. */ 165 Dwarf_Half cu_ver; /* DWARF CU version. */ 166 GElf_Ehdr ehdr; /* ELF header. */ 167 int ec; /* ELF class. */ 168 size_t shnum; /* #sections. */ 169 struct section *vd_s; /* Verdef section. */ 170 struct section *vn_s; /* Verneed section. */ 171 struct section *vs_s; /* Versym section. */ 172 uint16_t *vs; /* Versym array. */ 173 int vs_sz; /* Versym array size. */ 174 struct symver *ver; /* Version array. */ 175 int ver_sz; /* Size of version array. */ 176 struct section *sl; /* list of sections. */ 177 STAILQ_HEAD(, dumpop) v_dumpop; /* list of dump ops. */ 178 uint64_t (*dw_read)(Elf_Data *, uint64_t *, int); 179 uint64_t (*dw_decode)(uint8_t **, int); 180 }; 181 182 enum options 183 { 184 OPTION_DEBUG_DUMP 185 }; 186 187 static struct option longopts[] = { 188 {"all", no_argument, NULL, 'a'}, 189 {"arch-specific", no_argument, NULL, 'A'}, 190 {"archive-index", no_argument, NULL, 'c'}, 191 {"debug-dump", optional_argument, NULL, OPTION_DEBUG_DUMP}, 192 {"dynamic", no_argument, NULL, 'd'}, 193 {"file-header", no_argument, NULL, 'h'}, 194 {"full-section-name", no_argument, NULL, 'N'}, 195 {"headers", no_argument, NULL, 'e'}, 196 {"help", no_argument, 0, 'H'}, 197 {"hex-dump", required_argument, NULL, 'x'}, 198 {"histogram", no_argument, NULL, 'I'}, 199 {"notes", no_argument, NULL, 'n'}, 200 {"program-headers", no_argument, NULL, 'l'}, 201 {"relocs", no_argument, NULL, 'r'}, 202 {"sections", no_argument, NULL, 'S'}, 203 {"section-headers", no_argument, NULL, 'S'}, 204 {"section-groups", no_argument, NULL, 'g'}, 205 {"section-details", no_argument, NULL, 't'}, 206 {"segments", no_argument, NULL, 'l'}, 207 {"string-dump", required_argument, NULL, 'p'}, 208 {"symbols", no_argument, NULL, 's'}, 209 {"syms", no_argument, NULL, 's'}, 210 {"unwind", no_argument, NULL, 'u'}, 211 {"use-dynamic", no_argument, NULL, 'D'}, 212 {"version-info", no_argument, 0, 'V'}, 213 {"version", no_argument, 0, 'v'}, 214 {"wide", no_argument, 0, 'W'}, 215 {NULL, 0, NULL, 0} 216 }; 217 218 struct eflags_desc { 219 uint64_t flag; 220 const char *desc; 221 }; 222 223 struct mips_option { 224 uint64_t flag; 225 const char *desc; 226 }; 227 228 struct flag_desc { 229 uint64_t flag; 230 const char *desc; 231 }; 232 233 struct loc_at { 234 Dwarf_Attribute la_at; 235 Dwarf_Unsigned la_off; 236 Dwarf_Unsigned la_lowpc; 237 Dwarf_Half la_cu_psize; 238 Dwarf_Half la_cu_osize; 239 Dwarf_Half la_cu_ver; 240 }; 241 242 static void add_dumpop(struct readelf *re, size_t si, const char *sn, int op, 243 int t); 244 static const char *aeabi_adv_simd_arch(uint64_t simd); 245 static const char *aeabi_align_needed(uint64_t an); 246 static const char *aeabi_align_preserved(uint64_t ap); 247 static const char *aeabi_arm_isa(uint64_t ai); 248 static const char *aeabi_cpu_arch(uint64_t arch); 249 static const char *aeabi_cpu_arch_profile(uint64_t pf); 250 static const char *aeabi_div(uint64_t du); 251 static const char *aeabi_enum_size(uint64_t es); 252 static const char *aeabi_fp_16bit_format(uint64_t fp16); 253 static const char *aeabi_fp_arch(uint64_t fp); 254 static const char *aeabi_fp_denormal(uint64_t fd); 255 static const char *aeabi_fp_exceptions(uint64_t fe); 256 static const char *aeabi_fp_hpext(uint64_t fh); 257 static const char *aeabi_fp_number_model(uint64_t fn); 258 static const char *aeabi_fp_optm_goal(uint64_t fog); 259 static const char *aeabi_fp_rounding(uint64_t fr); 260 static const char *aeabi_hardfp(uint64_t hfp); 261 static const char *aeabi_mpext(uint64_t mp); 262 static const char *aeabi_optm_goal(uint64_t og); 263 static const char *aeabi_pcs_config(uint64_t pcs); 264 static const char *aeabi_pcs_got(uint64_t got); 265 static const char *aeabi_pcs_r9(uint64_t r9); 266 static const char *aeabi_pcs_ro(uint64_t ro); 267 static const char *aeabi_pcs_rw(uint64_t rw); 268 static const char *aeabi_pcs_wchar_t(uint64_t wt); 269 static const char *aeabi_t2ee(uint64_t t2ee); 270 static const char *aeabi_thumb_isa(uint64_t ti); 271 static const char *aeabi_fp_user_exceptions(uint64_t fu); 272 static const char *aeabi_unaligned_access(uint64_t ua); 273 static const char *aeabi_vfp_args(uint64_t va); 274 static const char *aeabi_virtual(uint64_t vt); 275 static const char *aeabi_wmmx_arch(uint64_t wmmx); 276 static const char *aeabi_wmmx_args(uint64_t wa); 277 static const char *elf_class(unsigned int class); 278 static const char *elf_endian(unsigned int endian); 279 static const char *elf_machine(unsigned int mach); 280 static const char *elf_osabi(unsigned int abi); 281 static const char *elf_type(unsigned int type); 282 static const char *elf_ver(unsigned int ver); 283 static const char *dt_type(unsigned int mach, unsigned int dtype); 284 static void dump_ar(struct readelf *re, int); 285 static void dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 286 static void dump_attributes(struct readelf *re); 287 static uint8_t *dump_compatibility_tag(uint8_t *p, uint8_t *pe); 288 static void dump_dwarf(struct readelf *re); 289 static void dump_dwarf_abbrev(struct readelf *re); 290 static void dump_dwarf_aranges(struct readelf *re); 291 static void dump_dwarf_block(struct readelf *re, uint8_t *b, 292 Dwarf_Unsigned len); 293 static void dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level); 294 static void dump_dwarf_frame(struct readelf *re, int alt); 295 static void dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, 296 uint8_t *insts, Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, 297 Dwarf_Addr pc, Dwarf_Debug dbg); 298 static int dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, 299 Dwarf_Addr pc, Dwarf_Unsigned func_len, Dwarf_Half cie_ra); 300 static void dump_dwarf_frame_section(struct readelf *re, struct section *s, 301 int alt); 302 static void dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info); 303 static void dump_dwarf_macinfo(struct readelf *re); 304 static void dump_dwarf_line(struct readelf *re); 305 static void dump_dwarf_line_decoded(struct readelf *re); 306 static void dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr); 307 static void dump_dwarf_loclist(struct readelf *re); 308 static void dump_dwarf_pubnames(struct readelf *re); 309 static void dump_dwarf_ranges(struct readelf *re); 310 static void dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, 311 Dwarf_Addr base); 312 static void dump_dwarf_str(struct readelf *re); 313 static void dump_eflags(struct readelf *re, uint64_t e_flags); 314 static void dump_elf(struct readelf *re); 315 static void dump_flags(struct flag_desc *fd, uint64_t flags); 316 static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab); 317 static void dump_dynamic(struct readelf *re); 318 static void dump_liblist(struct readelf *re); 319 static void dump_mips_abiflags(struct readelf *re, struct section *s); 320 static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 321 static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz); 322 static void dump_mips_options(struct readelf *re, struct section *s); 323 static void dump_mips_option_flags(const char *name, struct mips_option *opt, 324 uint64_t info); 325 static void dump_mips_reginfo(struct readelf *re, struct section *s); 326 static void dump_mips_specific_info(struct readelf *re); 327 static void dump_notes(struct readelf *re); 328 static void dump_notes_content(struct readelf *re, const char *buf, size_t sz, 329 off_t off); 330 static void dump_notes_data(struct readelf *re, const char *name, 331 uint32_t type, const char *buf, size_t sz); 332 static void dump_svr4_hash(struct section *s); 333 static void dump_svr4_hash64(struct readelf *re, struct section *s); 334 static void dump_gnu_hash(struct readelf *re, struct section *s); 335 static void dump_gnu_property_type_0(struct readelf *re, const char *buf, 336 size_t sz); 337 static void dump_hash(struct readelf *re); 338 static void dump_phdr(struct readelf *re); 339 static void dump_ppc_attributes(uint8_t *p, uint8_t *pe); 340 static void dump_section_groups(struct readelf *re); 341 static void dump_symtab(struct readelf *re, int i); 342 static void dump_symtabs(struct readelf *re); 343 static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe); 344 static void dump_ver(struct readelf *re); 345 static void dump_verdef(struct readelf *re, int dump); 346 static void dump_verneed(struct readelf *re, int dump); 347 static void dump_versym(struct readelf *re); 348 static const char *dwarf_reg(unsigned int mach, unsigned int reg); 349 static const char *dwarf_regname(struct readelf *re, unsigned int num); 350 static struct dumpop *find_dumpop(struct readelf *re, size_t si, 351 const char *sn, int op, int t); 352 static int get_ent_count(struct section *s, int *ent_count); 353 static int get_mips_register_size(uint8_t flag); 354 static char *get_regoff_str(struct readelf *re, Dwarf_Half reg, 355 Dwarf_Addr off); 356 static const char *get_string(struct readelf *re, int strtab, size_t off); 357 static const char *get_symbol_name(struct readelf *re, int symtab, int i); 358 static uint64_t get_symbol_value(struct readelf *re, int symtab, int i); 359 static void load_sections(struct readelf *re); 360 static int loc_at_comparator(const void *la1, const void *la2); 361 static const char *mips_abi_fp(uint64_t fp); 362 static const char *note_type(const char *note_name, unsigned int et, 363 unsigned int nt); 364 static const char *note_type_freebsd(unsigned int nt); 365 static const char *note_type_freebsd_core(unsigned int nt); 366 static const char *note_type_linux_core(unsigned int nt); 367 static const char *note_type_gnu(unsigned int nt); 368 static const char *note_type_netbsd(unsigned int nt); 369 static const char *note_type_openbsd(unsigned int nt); 370 static const char *note_type_unknown(unsigned int nt); 371 static const char *note_type_xen(unsigned int nt); 372 static const char *option_kind(uint8_t kind); 373 static const char *phdr_type(unsigned int mach, unsigned int ptype); 374 static const char *ppc_abi_fp(uint64_t fp); 375 static const char *ppc_abi_vector(uint64_t vec); 376 static void readelf_usage(int status); 377 static void readelf_version(void); 378 static void search_loclist_at(struct readelf *re, Dwarf_Die die, 379 Dwarf_Unsigned lowpc, struct loc_at **la_list, 380 size_t *la_list_len, size_t *la_list_cap); 381 static void search_ver(struct readelf *re); 382 static const char *section_type(unsigned int mach, unsigned int stype); 383 static void set_cu_context(struct readelf *re, Dwarf_Half psize, 384 Dwarf_Half osize, Dwarf_Half ver); 385 static const char *st_bind(unsigned int sbind); 386 static const char *st_shndx(unsigned int shndx); 387 static const char *st_type(unsigned int mach, unsigned int os, 388 unsigned int stype); 389 static const char *st_vis(unsigned int svis); 390 static const char *top_tag(unsigned int tag); 391 static void unload_sections(struct readelf *re); 392 static uint64_t _read_lsb(Elf_Data *d, uint64_t *offsetp, 393 int bytes_to_read); 394 static uint64_t _read_msb(Elf_Data *d, uint64_t *offsetp, 395 int bytes_to_read); 396 static uint64_t _decode_lsb(uint8_t **data, int bytes_to_read); 397 static uint64_t _decode_msb(uint8_t **data, int bytes_to_read); 398 static int64_t _decode_sleb128(uint8_t **dp, uint8_t *dpe); 399 static uint64_t _decode_uleb128(uint8_t **dp, uint8_t *dpe); 400 401 static struct eflags_desc arm_eflags_desc[] = { 402 {EF_ARM_RELEXEC, "relocatable executable"}, 403 {EF_ARM_HASENTRY, "has entry point"}, 404 {EF_ARM_SYMSARESORTED, "sorted symbol tables"}, 405 {EF_ARM_DYNSYMSUSESEGIDX, "dynamic symbols use segment index"}, 406 {EF_ARM_MAPSYMSFIRST, "mapping symbols precede others"}, 407 {EF_ARM_BE8, "BE8"}, 408 {EF_ARM_LE8, "LE8"}, 409 {EF_ARM_INTERWORK, "interworking enabled"}, 410 {EF_ARM_APCS_26, "uses APCS/26"}, 411 {EF_ARM_APCS_FLOAT, "uses APCS/float"}, 412 {EF_ARM_PIC, "position independent"}, 413 {EF_ARM_ALIGN8, "8 bit structure alignment"}, 414 {EF_ARM_NEW_ABI, "uses new ABI"}, 415 {EF_ARM_OLD_ABI, "uses old ABI"}, 416 {EF_ARM_SOFT_FLOAT, "software FP"}, 417 {EF_ARM_VFP_FLOAT, "VFP"}, 418 {EF_ARM_MAVERICK_FLOAT, "Maverick FP"}, 419 {0, NULL} 420 }; 421 422 static struct eflags_desc mips_eflags_desc[] = { 423 {EF_MIPS_NOREORDER, "noreorder"}, 424 {EF_MIPS_PIC, "pic"}, 425 {EF_MIPS_CPIC, "cpic"}, 426 {EF_MIPS_UCODE, "ugen_reserved"}, 427 {EF_MIPS_ABI2, "abi2"}, 428 {EF_MIPS_OPTIONS_FIRST, "odk first"}, 429 {EF_MIPS_ARCH_ASE_MDMX, "mdmx"}, 430 {EF_MIPS_ARCH_ASE_M16, "mips16"}, 431 {0, NULL} 432 }; 433 434 static struct eflags_desc powerpc_eflags_desc[] = { 435 {EF_PPC_EMB, "emb"}, 436 {EF_PPC_RELOCATABLE, "relocatable"}, 437 {EF_PPC_RELOCATABLE_LIB, "relocatable-lib"}, 438 {0, NULL} 439 }; 440 441 static struct eflags_desc riscv_eflags_desc[] = { 442 {EF_RISCV_RVC, "RVC"}, 443 {EF_RISCV_RVE, "RVE"}, 444 {EF_RISCV_TSO, "TSO"}, 445 {0, NULL} 446 }; 447 448 static struct eflags_desc sparc_eflags_desc[] = { 449 {EF_SPARC_32PLUS, "v8+"}, 450 {EF_SPARC_SUN_US1, "ultrasparcI"}, 451 {EF_SPARC_HAL_R1, "halr1"}, 452 {EF_SPARC_SUN_US3, "ultrasparcIII"}, 453 {0, NULL} 454 }; 455 456 static const char * 457 elf_osabi(unsigned int abi) 458 { 459 static char s_abi[32]; 460 461 switch(abi) { 462 case ELFOSABI_NONE: return "NONE"; 463 case ELFOSABI_HPUX: return "HPUX"; 464 case ELFOSABI_NETBSD: return "NetBSD"; 465 case ELFOSABI_GNU: return "GNU"; 466 case ELFOSABI_HURD: return "HURD"; 467 case ELFOSABI_86OPEN: return "86OPEN"; 468 case ELFOSABI_SOLARIS: return "Solaris"; 469 case ELFOSABI_AIX: return "AIX"; 470 case ELFOSABI_IRIX: return "IRIX"; 471 case ELFOSABI_FREEBSD: return "FreeBSD"; 472 case ELFOSABI_TRU64: return "TRU64"; 473 case ELFOSABI_MODESTO: return "MODESTO"; 474 case ELFOSABI_OPENBSD: return "OpenBSD"; 475 case ELFOSABI_OPENVMS: return "OpenVMS"; 476 case ELFOSABI_NSK: return "NSK"; 477 case ELFOSABI_CLOUDABI: return "CloudABI"; 478 case ELFOSABI_ARM_AEABI: return "ARM EABI"; 479 case ELFOSABI_ARM: return "ARM"; 480 case ELFOSABI_STANDALONE: return "StandAlone"; 481 default: 482 snprintf(s_abi, sizeof(s_abi), "<unknown: %#x>", abi); 483 return (s_abi); 484 } 485 }; 486 487 static const char * 488 elf_machine(unsigned int mach) 489 { 490 static char s_mach[32]; 491 492 switch (mach) { 493 case EM_NONE: return "Unknown machine"; 494 case EM_M32: return "AT&T WE32100"; 495 case EM_SPARC: return "Sun SPARC"; 496 case EM_386: return "Intel i386"; 497 case EM_68K: return "Motorola 68000"; 498 case EM_IAMCU: return "Intel MCU"; 499 case EM_88K: return "Motorola 88000"; 500 case EM_860: return "Intel i860"; 501 case EM_MIPS: return "MIPS R3000 Big-Endian only"; 502 case EM_S370: return "IBM System/370"; 503 case EM_MIPS_RS3_LE: return "MIPS R3000 Little-Endian"; 504 case EM_PARISC: return "HP PA-RISC"; 505 case EM_VPP500: return "Fujitsu VPP500"; 506 case EM_SPARC32PLUS: return "SPARC v8plus"; 507 case EM_960: return "Intel 80960"; 508 case EM_PPC: return "PowerPC 32-bit"; 509 case EM_PPC64: return "PowerPC 64-bit"; 510 case EM_S390: return "IBM System/390"; 511 case EM_V800: return "NEC V800"; 512 case EM_FR20: return "Fujitsu FR20"; 513 case EM_RH32: return "TRW RH-32"; 514 case EM_RCE: return "Motorola RCE"; 515 case EM_ARM: return "ARM"; 516 case EM_SH: return "Hitachi SH"; 517 case EM_SPARCV9: return "SPARC v9 64-bit"; 518 case EM_TRICORE: return "Siemens TriCore embedded processor"; 519 case EM_ARC: return "Argonaut RISC Core"; 520 case EM_H8_300: return "Hitachi H8/300"; 521 case EM_H8_300H: return "Hitachi H8/300H"; 522 case EM_H8S: return "Hitachi H8S"; 523 case EM_H8_500: return "Hitachi H8/500"; 524 case EM_IA_64: return "Intel IA-64 Processor"; 525 case EM_MIPS_X: return "Stanford MIPS-X"; 526 case EM_COLDFIRE: return "Motorola ColdFire"; 527 case EM_68HC12: return "Motorola M68HC12"; 528 case EM_MMA: return "Fujitsu MMA"; 529 case EM_PCP: return "Siemens PCP"; 530 case EM_NCPU: return "Sony nCPU"; 531 case EM_NDR1: return "Denso NDR1 microprocessor"; 532 case EM_STARCORE: return "Motorola Star*Core processor"; 533 case EM_ME16: return "Toyota ME16 processor"; 534 case EM_ST100: return "STMicroelectronics ST100 processor"; 535 case EM_TINYJ: return "Advanced Logic Corp. TinyJ processor"; 536 case EM_X86_64: return "Advanced Micro Devices x86-64"; 537 case EM_PDSP: return "Sony DSP Processor"; 538 case EM_FX66: return "Siemens FX66 microcontroller"; 539 case EM_ST9PLUS: return "STMicroelectronics ST9+ 8/16 microcontroller"; 540 case EM_ST7: return "STmicroelectronics ST7 8-bit microcontroller"; 541 case EM_68HC16: return "Motorola MC68HC16 microcontroller"; 542 case EM_68HC11: return "Motorola MC68HC11 microcontroller"; 543 case EM_68HC08: return "Motorola MC68HC08 microcontroller"; 544 case EM_68HC05: return "Motorola MC68HC05 microcontroller"; 545 case EM_SVX: return "Silicon Graphics SVx"; 546 case EM_ST19: return "STMicroelectronics ST19 8-bit mc"; 547 case EM_VAX: return "Digital VAX"; 548 case EM_CRIS: return "Axis Communications 32-bit embedded processor"; 549 case EM_JAVELIN: return "Infineon Tech. 32bit embedded processor"; 550 case EM_FIREPATH: return "Element 14 64-bit DSP Processor"; 551 case EM_ZSP: return "LSI Logic 16-bit DSP Processor"; 552 case EM_MMIX: return "Donald Knuth's educational 64-bit proc"; 553 case EM_HUANY: return "Harvard University MI object files"; 554 case EM_PRISM: return "SiTera Prism"; 555 case EM_AVR: return "Atmel AVR 8-bit microcontroller"; 556 case EM_FR30: return "Fujitsu FR30"; 557 case EM_D10V: return "Mitsubishi D10V"; 558 case EM_D30V: return "Mitsubishi D30V"; 559 case EM_V850: return "NEC v850"; 560 case EM_M32R: return "Mitsubishi M32R"; 561 case EM_MN10300: return "Matsushita MN10300"; 562 case EM_MN10200: return "Matsushita MN10200"; 563 case EM_PJ: return "picoJava"; 564 case EM_OPENRISC: return "OpenRISC 32-bit embedded processor"; 565 case EM_ARC_A5: return "ARC Cores Tangent-A5"; 566 case EM_XTENSA: return "Tensilica Xtensa Architecture"; 567 case EM_VIDEOCORE: return "Alphamosaic VideoCore processor"; 568 case EM_TMM_GPP: return "Thompson Multimedia General Purpose Processor"; 569 case EM_NS32K: return "National Semiconductor 32000 series"; 570 case EM_TPC: return "Tenor Network TPC processor"; 571 case EM_SNP1K: return "Trebia SNP 1000 processor"; 572 case EM_ST200: return "STMicroelectronics ST200 microcontroller"; 573 case EM_IP2K: return "Ubicom IP2xxx microcontroller family"; 574 case EM_MAX: return "MAX Processor"; 575 case EM_CR: return "National Semiconductor CompactRISC microprocessor"; 576 case EM_F2MC16: return "Fujitsu F2MC16"; 577 case EM_MSP430: return "TI embedded microcontroller msp430"; 578 case EM_BLACKFIN: return "Analog Devices Blackfin (DSP) processor"; 579 case EM_SE_C33: return "S1C33 Family of Seiko Epson processors"; 580 case EM_SEP: return "Sharp embedded microprocessor"; 581 case EM_ARCA: return "Arca RISC Microprocessor"; 582 case EM_UNICORE: return "Microprocessor series from PKU-Unity Ltd"; 583 case EM_AARCH64: return "AArch64"; 584 case EM_RISCV: return "RISC-V"; 585 default: 586 snprintf(s_mach, sizeof(s_mach), "<unknown: %#x>", mach); 587 return (s_mach); 588 } 589 590 } 591 592 static const char * 593 elf_class(unsigned int class) 594 { 595 static char s_class[32]; 596 597 switch (class) { 598 case ELFCLASSNONE: return "none"; 599 case ELFCLASS32: return "ELF32"; 600 case ELFCLASS64: return "ELF64"; 601 default: 602 snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class); 603 return (s_class); 604 } 605 } 606 607 static const char * 608 elf_endian(unsigned int endian) 609 { 610 static char s_endian[32]; 611 612 switch (endian) { 613 case ELFDATANONE: return "none"; 614 case ELFDATA2LSB: return "2's complement, little endian"; 615 case ELFDATA2MSB: return "2's complement, big endian"; 616 default: 617 snprintf(s_endian, sizeof(s_endian), "<unknown: %#x>", endian); 618 return (s_endian); 619 } 620 } 621 622 static const char * 623 elf_type(unsigned int type) 624 { 625 static char s_type[32]; 626 627 switch (type) { 628 case ET_NONE: return "NONE (None)"; 629 case ET_REL: return "REL (Relocatable file)"; 630 case ET_EXEC: return "EXEC (Executable file)"; 631 case ET_DYN: return "DYN (Shared object file)"; 632 case ET_CORE: return "CORE (Core file)"; 633 default: 634 if (type >= ET_LOPROC) 635 snprintf(s_type, sizeof(s_type), "<proc: %#x>", type); 636 else if (type >= ET_LOOS && type <= ET_HIOS) 637 snprintf(s_type, sizeof(s_type), "<os: %#x>", type); 638 else 639 snprintf(s_type, sizeof(s_type), "<unknown: %#x>", 640 type); 641 return (s_type); 642 } 643 } 644 645 static const char * 646 elf_ver(unsigned int ver) 647 { 648 static char s_ver[32]; 649 650 switch (ver) { 651 case EV_CURRENT: return "(current)"; 652 case EV_NONE: return "(none)"; 653 default: 654 snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>", 655 ver); 656 return (s_ver); 657 } 658 } 659 660 static const char * 661 phdr_type(unsigned int mach, unsigned int ptype) 662 { 663 static char s_ptype[32]; 664 665 if (ptype >= PT_LOPROC && ptype <= PT_HIPROC) { 666 switch (mach) { 667 case EM_ARM: 668 switch (ptype) { 669 case PT_ARM_ARCHEXT: return "ARM_ARCHEXT"; 670 case PT_ARM_EXIDX: return "ARM_EXIDX"; 671 } 672 break; 673 } 674 snprintf(s_ptype, sizeof(s_ptype), "LOPROC+%#x", 675 ptype - PT_LOPROC); 676 return (s_ptype); 677 } 678 679 switch (ptype) { 680 case PT_NULL: return "NULL"; 681 case PT_LOAD: return "LOAD"; 682 case PT_DYNAMIC: return "DYNAMIC"; 683 case PT_INTERP: return "INTERP"; 684 case PT_NOTE: return "NOTE"; 685 case PT_SHLIB: return "SHLIB"; 686 case PT_PHDR: return "PHDR"; 687 case PT_TLS: return "TLS"; 688 case PT_GNU_EH_FRAME: return "GNU_EH_FRAME"; 689 case PT_GNU_STACK: return "GNU_STACK"; 690 case PT_GNU_RELRO: return "GNU_RELRO"; 691 case PT_OPENBSD_RANDOMIZE: return "OPENBSD_RANDOMIZE"; 692 case PT_OPENBSD_WXNEEDED: return "OPENBSD_WXNEEDED"; 693 case PT_OPENBSD_BOOTDATA: return "OPENBSD_BOOTDATA"; 694 default: 695 if (ptype >= PT_LOOS && ptype <= PT_HIOS) 696 snprintf(s_ptype, sizeof(s_ptype), "LOOS+%#x", 697 ptype - PT_LOOS); 698 else 699 snprintf(s_ptype, sizeof(s_ptype), "<unknown: %#x>", 700 ptype); 701 return (s_ptype); 702 } 703 } 704 705 static const char * 706 section_type(unsigned int mach, unsigned int stype) 707 { 708 static char s_stype[32]; 709 710 if (stype >= SHT_LOPROC && stype <= SHT_HIPROC) { 711 switch (mach) { 712 case EM_ARM: 713 switch (stype) { 714 case SHT_ARM_EXIDX: return "ARM_EXIDX"; 715 case SHT_ARM_PREEMPTMAP: return "ARM_PREEMPTMAP"; 716 case SHT_ARM_ATTRIBUTES: return "ARM_ATTRIBUTES"; 717 case SHT_ARM_DEBUGOVERLAY: return "ARM_DEBUGOVERLAY"; 718 case SHT_ARM_OVERLAYSECTION: return "ARM_OVERLAYSECTION"; 719 } 720 break; 721 case EM_X86_64: 722 switch (stype) { 723 case SHT_X86_64_UNWIND: return "X86_64_UNWIND"; 724 default: 725 break; 726 } 727 break; 728 case EM_MIPS: 729 case EM_MIPS_RS3_LE: 730 switch (stype) { 731 case SHT_MIPS_LIBLIST: return "MIPS_LIBLIST"; 732 case SHT_MIPS_MSYM: return "MIPS_MSYM"; 733 case SHT_MIPS_CONFLICT: return "MIPS_CONFLICT"; 734 case SHT_MIPS_GPTAB: return "MIPS_GPTAB"; 735 case SHT_MIPS_UCODE: return "MIPS_UCODE"; 736 case SHT_MIPS_DEBUG: return "MIPS_DEBUG"; 737 case SHT_MIPS_REGINFO: return "MIPS_REGINFO"; 738 case SHT_MIPS_PACKAGE: return "MIPS_PACKAGE"; 739 case SHT_MIPS_PACKSYM: return "MIPS_PACKSYM"; 740 case SHT_MIPS_RELD: return "MIPS_RELD"; 741 case SHT_MIPS_IFACE: return "MIPS_IFACE"; 742 case SHT_MIPS_CONTENT: return "MIPS_CONTENT"; 743 case SHT_MIPS_OPTIONS: return "MIPS_OPTIONS"; 744 case SHT_MIPS_DELTASYM: return "MIPS_DELTASYM"; 745 case SHT_MIPS_DELTAINST: return "MIPS_DELTAINST"; 746 case SHT_MIPS_DELTACLASS: return "MIPS_DELTACLASS"; 747 case SHT_MIPS_DWARF: return "MIPS_DWARF"; 748 case SHT_MIPS_DELTADECL: return "MIPS_DELTADECL"; 749 case SHT_MIPS_SYMBOL_LIB: return "MIPS_SYMBOL_LIB"; 750 case SHT_MIPS_EVENTS: return "MIPS_EVENTS"; 751 case SHT_MIPS_TRANSLATE: return "MIPS_TRANSLATE"; 752 case SHT_MIPS_PIXIE: return "MIPS_PIXIE"; 753 case SHT_MIPS_XLATE: return "MIPS_XLATE"; 754 case SHT_MIPS_XLATE_DEBUG: return "MIPS_XLATE_DEBUG"; 755 case SHT_MIPS_WHIRL: return "MIPS_WHIRL"; 756 case SHT_MIPS_EH_REGION: return "MIPS_EH_REGION"; 757 case SHT_MIPS_XLATE_OLD: return "MIPS_XLATE_OLD"; 758 case SHT_MIPS_PDR_EXCEPTION: return "MIPS_PDR_EXCEPTION"; 759 case SHT_MIPS_ABIFLAGS: return "MIPS_ABIFLAGS"; 760 default: 761 break; 762 } 763 break; 764 default: 765 break; 766 } 767 768 snprintf(s_stype, sizeof(s_stype), "LOPROC+%#x", 769 stype - SHT_LOPROC); 770 return (s_stype); 771 } 772 773 switch (stype) { 774 case SHT_NULL: return "NULL"; 775 case SHT_PROGBITS: return "PROGBITS"; 776 case SHT_SYMTAB: return "SYMTAB"; 777 case SHT_STRTAB: return "STRTAB"; 778 case SHT_RELA: return "RELA"; 779 case SHT_HASH: return "HASH"; 780 case SHT_DYNAMIC: return "DYNAMIC"; 781 case SHT_NOTE: return "NOTE"; 782 case SHT_NOBITS: return "NOBITS"; 783 case SHT_REL: return "REL"; 784 case SHT_SHLIB: return "SHLIB"; 785 case SHT_DYNSYM: return "DYNSYM"; 786 case SHT_INIT_ARRAY: return "INIT_ARRAY"; 787 case SHT_FINI_ARRAY: return "FINI_ARRAY"; 788 case SHT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 789 case SHT_GROUP: return "GROUP"; 790 case SHT_SYMTAB_SHNDX: return "SYMTAB_SHNDX"; 791 case SHT_SUNW_dof: return "SUNW_dof"; 792 case SHT_SUNW_cap: return "SUNW_cap"; 793 case SHT_GNU_HASH: return "GNU_HASH"; 794 case SHT_SUNW_ANNOTATE: return "SUNW_ANNOTATE"; 795 case SHT_SUNW_DEBUGSTR: return "SUNW_DEBUGSTR"; 796 case SHT_SUNW_DEBUG: return "SUNW_DEBUG"; 797 case SHT_SUNW_move: return "SUNW_move"; 798 case SHT_SUNW_COMDAT: return "SUNW_COMDAT"; 799 case SHT_SUNW_syminfo: return "SUNW_syminfo"; 800 case SHT_SUNW_verdef: return "SUNW_verdef"; 801 case SHT_SUNW_verneed: return "SUNW_verneed"; 802 case SHT_SUNW_versym: return "SUNW_versym"; 803 default: 804 if (stype >= SHT_LOOS && stype <= SHT_HIOS) 805 snprintf(s_stype, sizeof(s_stype), "LOOS+%#x", 806 stype - SHT_LOOS); 807 else if (stype >= SHT_LOUSER) 808 snprintf(s_stype, sizeof(s_stype), "LOUSER+%#x", 809 stype - SHT_LOUSER); 810 else 811 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 812 stype); 813 return (s_stype); 814 } 815 } 816 817 static const char * 818 dt_type(unsigned int mach, unsigned int dtype) 819 { 820 static char s_dtype[32]; 821 822 switch (dtype) { 823 case DT_NULL: return "NULL"; 824 case DT_NEEDED: return "NEEDED"; 825 case DT_PLTRELSZ: return "PLTRELSZ"; 826 case DT_PLTGOT: return "PLTGOT"; 827 case DT_HASH: return "HASH"; 828 case DT_STRTAB: return "STRTAB"; 829 case DT_SYMTAB: return "SYMTAB"; 830 case DT_RELA: return "RELA"; 831 case DT_RELASZ: return "RELASZ"; 832 case DT_RELAENT: return "RELAENT"; 833 case DT_STRSZ: return "STRSZ"; 834 case DT_SYMENT: return "SYMENT"; 835 case DT_INIT: return "INIT"; 836 case DT_FINI: return "FINI"; 837 case DT_SONAME: return "SONAME"; 838 case DT_RPATH: return "RPATH"; 839 case DT_SYMBOLIC: return "SYMBOLIC"; 840 case DT_REL: return "REL"; 841 case DT_RELSZ: return "RELSZ"; 842 case DT_RELENT: return "RELENT"; 843 case DT_PLTREL: return "PLTREL"; 844 case DT_DEBUG: return "DEBUG"; 845 case DT_TEXTREL: return "TEXTREL"; 846 case DT_JMPREL: return "JMPREL"; 847 case DT_BIND_NOW: return "BIND_NOW"; 848 case DT_INIT_ARRAY: return "INIT_ARRAY"; 849 case DT_FINI_ARRAY: return "FINI_ARRAY"; 850 case DT_INIT_ARRAYSZ: return "INIT_ARRAYSZ"; 851 case DT_FINI_ARRAYSZ: return "FINI_ARRAYSZ"; 852 case DT_RUNPATH: return "RUNPATH"; 853 case DT_FLAGS: return "FLAGS"; 854 case DT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 855 case DT_PREINIT_ARRAYSZ: return "PREINIT_ARRAYSZ"; 856 case DT_MAXPOSTAGS: return "MAXPOSTAGS"; 857 case DT_SUNW_AUXILIARY: return "SUNW_AUXILIARY"; 858 case DT_SUNW_RTLDINF: return "SUNW_RTLDINF"; 859 case DT_SUNW_FILTER: return "SUNW_FILTER"; 860 case DT_SUNW_CAP: return "SUNW_CAP"; 861 case DT_SUNW_ASLR: return "SUNW_ASLR"; 862 case DT_CHECKSUM: return "CHECKSUM"; 863 case DT_PLTPADSZ: return "PLTPADSZ"; 864 case DT_MOVEENT: return "MOVEENT"; 865 case DT_MOVESZ: return "MOVESZ"; 866 case DT_FEATURE: return "FEATURE"; 867 case DT_POSFLAG_1: return "POSFLAG_1"; 868 case DT_SYMINSZ: return "SYMINSZ"; 869 case DT_SYMINENT: return "SYMINENT"; 870 case DT_GNU_HASH: return "GNU_HASH"; 871 case DT_TLSDESC_PLT: return "DT_TLSDESC_PLT"; 872 case DT_TLSDESC_GOT: return "DT_TLSDESC_GOT"; 873 case DT_GNU_CONFLICT: return "GNU_CONFLICT"; 874 case DT_GNU_LIBLIST: return "GNU_LIBLIST"; 875 case DT_CONFIG: return "CONFIG"; 876 case DT_DEPAUDIT: return "DEPAUDIT"; 877 case DT_AUDIT: return "AUDIT"; 878 case DT_PLTPAD: return "PLTPAD"; 879 case DT_MOVETAB: return "MOVETAB"; 880 case DT_SYMINFO: return "SYMINFO"; 881 case DT_VERSYM: return "VERSYM"; 882 case DT_RELACOUNT: return "RELACOUNT"; 883 case DT_RELCOUNT: return "RELCOUNT"; 884 case DT_FLAGS_1: return "FLAGS_1"; 885 case DT_VERDEF: return "VERDEF"; 886 case DT_VERDEFNUM: return "VERDEFNUM"; 887 case DT_VERNEED: return "VERNEED"; 888 case DT_VERNEEDNUM: return "VERNEEDNUM"; 889 case DT_AUXILIARY: return "AUXILIARY"; 890 case DT_USED: return "USED"; 891 case DT_FILTER: return "FILTER"; 892 case DT_GNU_PRELINKED: return "GNU_PRELINKED"; 893 case DT_GNU_CONFLICTSZ: return "GNU_CONFLICTSZ"; 894 case DT_GNU_LIBLISTSZ: return "GNU_LIBLISTSZ"; 895 } 896 897 if (dtype >= DT_LOPROC && dtype <= DT_HIPROC) { 898 switch (mach) { 899 case EM_ARM: 900 switch (dtype) { 901 case DT_ARM_SYMTABSZ: 902 return "ARM_SYMTABSZ"; 903 default: 904 break; 905 } 906 break; 907 case EM_MIPS: 908 case EM_MIPS_RS3_LE: 909 switch (dtype) { 910 case DT_MIPS_RLD_VERSION: 911 return "MIPS_RLD_VERSION"; 912 case DT_MIPS_TIME_STAMP: 913 return "MIPS_TIME_STAMP"; 914 case DT_MIPS_ICHECKSUM: 915 return "MIPS_ICHECKSUM"; 916 case DT_MIPS_IVERSION: 917 return "MIPS_IVERSION"; 918 case DT_MIPS_FLAGS: 919 return "MIPS_FLAGS"; 920 case DT_MIPS_BASE_ADDRESS: 921 return "MIPS_BASE_ADDRESS"; 922 case DT_MIPS_CONFLICT: 923 return "MIPS_CONFLICT"; 924 case DT_MIPS_LIBLIST: 925 return "MIPS_LIBLIST"; 926 case DT_MIPS_LOCAL_GOTNO: 927 return "MIPS_LOCAL_GOTNO"; 928 case DT_MIPS_CONFLICTNO: 929 return "MIPS_CONFLICTNO"; 930 case DT_MIPS_LIBLISTNO: 931 return "MIPS_LIBLISTNO"; 932 case DT_MIPS_SYMTABNO: 933 return "MIPS_SYMTABNO"; 934 case DT_MIPS_UNREFEXTNO: 935 return "MIPS_UNREFEXTNO"; 936 case DT_MIPS_GOTSYM: 937 return "MIPS_GOTSYM"; 938 case DT_MIPS_HIPAGENO: 939 return "MIPS_HIPAGENO"; 940 case DT_MIPS_RLD_MAP: 941 return "MIPS_RLD_MAP"; 942 case DT_MIPS_DELTA_CLASS: 943 return "MIPS_DELTA_CLASS"; 944 case DT_MIPS_DELTA_CLASS_NO: 945 return "MIPS_DELTA_CLASS_NO"; 946 case DT_MIPS_DELTA_INSTANCE: 947 return "MIPS_DELTA_INSTANCE"; 948 case DT_MIPS_DELTA_INSTANCE_NO: 949 return "MIPS_DELTA_INSTANCE_NO"; 950 case DT_MIPS_DELTA_RELOC: 951 return "MIPS_DELTA_RELOC"; 952 case DT_MIPS_DELTA_RELOC_NO: 953 return "MIPS_DELTA_RELOC_NO"; 954 case DT_MIPS_DELTA_SYM: 955 return "MIPS_DELTA_SYM"; 956 case DT_MIPS_DELTA_SYM_NO: 957 return "MIPS_DELTA_SYM_NO"; 958 case DT_MIPS_DELTA_CLASSSYM: 959 return "MIPS_DELTA_CLASSSYM"; 960 case DT_MIPS_DELTA_CLASSSYM_NO: 961 return "MIPS_DELTA_CLASSSYM_NO"; 962 case DT_MIPS_CXX_FLAGS: 963 return "MIPS_CXX_FLAGS"; 964 case DT_MIPS_PIXIE_INIT: 965 return "MIPS_PIXIE_INIT"; 966 case DT_MIPS_SYMBOL_LIB: 967 return "MIPS_SYMBOL_LIB"; 968 case DT_MIPS_LOCALPAGE_GOTIDX: 969 return "MIPS_LOCALPAGE_GOTIDX"; 970 case DT_MIPS_LOCAL_GOTIDX: 971 return "MIPS_LOCAL_GOTIDX"; 972 case DT_MIPS_HIDDEN_GOTIDX: 973 return "MIPS_HIDDEN_GOTIDX"; 974 case DT_MIPS_PROTECTED_GOTIDX: 975 return "MIPS_PROTECTED_GOTIDX"; 976 case DT_MIPS_OPTIONS: 977 return "MIPS_OPTIONS"; 978 case DT_MIPS_INTERFACE: 979 return "MIPS_INTERFACE"; 980 case DT_MIPS_DYNSTR_ALIGN: 981 return "MIPS_DYNSTR_ALIGN"; 982 case DT_MIPS_INTERFACE_SIZE: 983 return "MIPS_INTERFACE_SIZE"; 984 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 985 return "MIPS_RLD_TEXT_RESOLVE_ADDR"; 986 case DT_MIPS_PERF_SUFFIX: 987 return "MIPS_PERF_SUFFIX"; 988 case DT_MIPS_COMPACT_SIZE: 989 return "MIPS_COMPACT_SIZE"; 990 case DT_MIPS_GP_VALUE: 991 return "MIPS_GP_VALUE"; 992 case DT_MIPS_AUX_DYNAMIC: 993 return "MIPS_AUX_DYNAMIC"; 994 case DT_MIPS_PLTGOT: 995 return "MIPS_PLTGOT"; 996 case DT_MIPS_RLD_OBJ_UPDATE: 997 return "MIPS_RLD_OBJ_UPDATE"; 998 case DT_MIPS_RWPLT: 999 return "MIPS_RWPLT"; 1000 default: 1001 break; 1002 } 1003 break; 1004 case EM_SPARC: 1005 case EM_SPARC32PLUS: 1006 case EM_SPARCV9: 1007 switch (dtype) { 1008 case DT_SPARC_REGISTER: 1009 return "DT_SPARC_REGISTER"; 1010 default: 1011 break; 1012 } 1013 break; 1014 default: 1015 break; 1016 } 1017 } 1018 1019 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype); 1020 return (s_dtype); 1021 } 1022 1023 static const char * 1024 st_bind(unsigned int sbind) 1025 { 1026 static char s_sbind[32]; 1027 1028 switch (sbind) { 1029 case STB_LOCAL: return "LOCAL"; 1030 case STB_GLOBAL: return "GLOBAL"; 1031 case STB_WEAK: return "WEAK"; 1032 case STB_GNU_UNIQUE: return "UNIQUE"; 1033 default: 1034 if (sbind >= STB_LOOS && sbind <= STB_HIOS) 1035 return "OS"; 1036 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC) 1037 return "PROC"; 1038 else 1039 snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>", 1040 sbind); 1041 return (s_sbind); 1042 } 1043 } 1044 1045 static const char * 1046 st_type(unsigned int mach, unsigned int os, unsigned int stype) 1047 { 1048 static char s_stype[32]; 1049 1050 switch (stype) { 1051 case STT_NOTYPE: return "NOTYPE"; 1052 case STT_OBJECT: return "OBJECT"; 1053 case STT_FUNC: return "FUNC"; 1054 case STT_SECTION: return "SECTION"; 1055 case STT_FILE: return "FILE"; 1056 case STT_COMMON: return "COMMON"; 1057 case STT_TLS: return "TLS"; 1058 default: 1059 if (stype >= STT_LOOS && stype <= STT_HIOS) { 1060 if ((os == ELFOSABI_GNU || os == ELFOSABI_FREEBSD) && 1061 stype == STT_GNU_IFUNC) 1062 return "IFUNC"; 1063 snprintf(s_stype, sizeof(s_stype), "OS+%#x", 1064 stype - STT_LOOS); 1065 } else if (stype >= STT_LOPROC && stype <= STT_HIPROC) { 1066 if (mach == EM_SPARCV9 && stype == STT_SPARC_REGISTER) 1067 return "REGISTER"; 1068 snprintf(s_stype, sizeof(s_stype), "PROC+%#x", 1069 stype - STT_LOPROC); 1070 } else 1071 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 1072 stype); 1073 return (s_stype); 1074 } 1075 } 1076 1077 static const char * 1078 st_vis(unsigned int svis) 1079 { 1080 static char s_svis[32]; 1081 1082 switch(svis) { 1083 case STV_DEFAULT: return "DEFAULT"; 1084 case STV_INTERNAL: return "INTERNAL"; 1085 case STV_HIDDEN: return "HIDDEN"; 1086 case STV_PROTECTED: return "PROTECTED"; 1087 default: 1088 snprintf(s_svis, sizeof(s_svis), "<unknown: %#x>", svis); 1089 return (s_svis); 1090 } 1091 } 1092 1093 static const char * 1094 st_shndx(unsigned int shndx) 1095 { 1096 static char s_shndx[32]; 1097 1098 switch (shndx) { 1099 case SHN_UNDEF: return "UND"; 1100 case SHN_ABS: return "ABS"; 1101 case SHN_COMMON: return "COM"; 1102 default: 1103 if (shndx >= SHN_LOPROC && shndx <= SHN_HIPROC) 1104 return "PRC"; 1105 else if (shndx >= SHN_LOOS && shndx <= SHN_HIOS) 1106 return "OS"; 1107 else 1108 snprintf(s_shndx, sizeof(s_shndx), "%u", shndx); 1109 return (s_shndx); 1110 } 1111 } 1112 1113 static struct { 1114 const char *ln; 1115 char sn; 1116 int value; 1117 } section_flag[] = { 1118 {"WRITE", 'W', SHF_WRITE}, 1119 {"ALLOC", 'A', SHF_ALLOC}, 1120 {"EXEC", 'X', SHF_EXECINSTR}, 1121 {"MERGE", 'M', SHF_MERGE}, 1122 {"STRINGS", 'S', SHF_STRINGS}, 1123 {"INFO LINK", 'I', SHF_INFO_LINK}, 1124 {"OS NONCONF", 'O', SHF_OS_NONCONFORMING}, 1125 {"GROUP", 'G', SHF_GROUP}, 1126 {"TLS", 'T', SHF_TLS}, 1127 {"COMPRESSED", 'C', SHF_COMPRESSED}, 1128 {NULL, 0, 0} 1129 }; 1130 1131 static const char * 1132 note_type(const char *name, unsigned int et, unsigned int nt) 1133 { 1134 if ((strcmp(name, "CORE") == 0 || strcmp(name, "LINUX") == 0) && 1135 et == ET_CORE) 1136 return note_type_linux_core(nt); 1137 else if (strcmp(name, "FreeBSD") == 0) 1138 if (et == ET_CORE) 1139 return note_type_freebsd_core(nt); 1140 else 1141 return note_type_freebsd(nt); 1142 else if (strcmp(name, "GNU") == 0 && et != ET_CORE) 1143 return note_type_gnu(nt); 1144 else if (strcmp(name, "NetBSD") == 0 && et != ET_CORE) 1145 return note_type_netbsd(nt); 1146 else if (strcmp(name, "OpenBSD") == 0 && et != ET_CORE) 1147 return note_type_openbsd(nt); 1148 else if (strcmp(name, "Xen") == 0 && et != ET_CORE) 1149 return note_type_xen(nt); 1150 return note_type_unknown(nt); 1151 } 1152 1153 static const char * 1154 note_type_freebsd(unsigned int nt) 1155 { 1156 switch (nt) { 1157 case 1: return "NT_FREEBSD_ABI_TAG"; 1158 case 2: return "NT_FREEBSD_NOINIT_TAG"; 1159 case 3: return "NT_FREEBSD_ARCH_TAG"; 1160 case 4: return "NT_FREEBSD_FEATURE_CTL"; 1161 default: return (note_type_unknown(nt)); 1162 } 1163 } 1164 1165 static const char * 1166 note_type_freebsd_core(unsigned int nt) 1167 { 1168 switch (nt) { 1169 case 1: return "NT_PRSTATUS"; 1170 case 2: return "NT_FPREGSET"; 1171 case 3: return "NT_PRPSINFO"; 1172 case 7: return "NT_THRMISC"; 1173 case 8: return "NT_PROCSTAT_PROC"; 1174 case 9: return "NT_PROCSTAT_FILES"; 1175 case 10: return "NT_PROCSTAT_VMMAP"; 1176 case 11: return "NT_PROCSTAT_GROUPS"; 1177 case 12: return "NT_PROCSTAT_UMASK"; 1178 case 13: return "NT_PROCSTAT_RLIMIT"; 1179 case 14: return "NT_PROCSTAT_OSREL"; 1180 case 15: return "NT_PROCSTAT_PSSTRINGS"; 1181 case 16: return "NT_PROCSTAT_AUXV"; 1182 case 17: return "NT_PTLWPINFO"; 1183 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1184 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1185 default: return (note_type_unknown(nt)); 1186 } 1187 } 1188 1189 static const char * 1190 note_type_linux_core(unsigned int nt) 1191 { 1192 switch (nt) { 1193 case 1: return "NT_PRSTATUS (Process status)"; 1194 case 2: return "NT_FPREGSET (Floating point information)"; 1195 case 3: return "NT_PRPSINFO (Process information)"; 1196 case 4: return "NT_TASKSTRUCT (Task structure)"; 1197 case 6: return "NT_AUXV (Auxiliary vector)"; 1198 case 10: return "NT_PSTATUS (Linux process status)"; 1199 case 12: return "NT_FPREGS (Linux floating point regset)"; 1200 case 13: return "NT_PSINFO (Linux process information)"; 1201 case 16: return "NT_LWPSTATUS (Linux lwpstatus_t type)"; 1202 case 17: return "NT_LWPSINFO (Linux lwpinfo_t type)"; 1203 case 18: return "NT_WIN32PSTATUS (win32_pstatus structure)"; 1204 case 0x100: return "NT_PPC_VMX (ppc Altivec registers)"; 1205 case 0x102: return "NT_PPC_VSX (ppc VSX registers)"; 1206 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1207 case 0x300: return "NT_S390_HIGH_GPRS (s390 upper register halves)"; 1208 case 0x301: return "NT_S390_TIMER (s390 timer register)"; 1209 case 0x302: return "NT_S390_TODCMP (s390 TOD comparator register)"; 1210 case 0x303: return "NT_S390_TODPREG (s390 TOD programmable register)"; 1211 case 0x304: return "NT_S390_CTRS (s390 control registers)"; 1212 case 0x305: return "NT_S390_PREFIX (s390 prefix register)"; 1213 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1214 case 0x46494c45UL: return "NT_FILE (mapped files)"; 1215 case 0x46E62B7FUL: return "NT_PRXFPREG (Linux user_xfpregs structure)"; 1216 case 0x53494749UL: return "NT_SIGINFO (siginfo_t data)"; 1217 default: return (note_type_unknown(nt)); 1218 } 1219 } 1220 1221 static const char * 1222 note_type_gnu(unsigned int nt) 1223 { 1224 switch (nt) { 1225 case 1: return "NT_GNU_ABI_TAG"; 1226 case 2: return "NT_GNU_HWCAP (Hardware capabilities)"; 1227 case 3: return "NT_GNU_BUILD_ID (Build id set by ld(1))"; 1228 case 4: return "NT_GNU_GOLD_VERSION (GNU gold version)"; 1229 case 5: return "NT_GNU_PROPERTY_TYPE_0"; 1230 default: return (note_type_unknown(nt)); 1231 } 1232 } 1233 1234 static const char * 1235 note_type_netbsd(unsigned int nt) 1236 { 1237 switch (nt) { 1238 case 1: return "NT_NETBSD_IDENT"; 1239 default: return (note_type_unknown(nt)); 1240 } 1241 } 1242 1243 static const char * 1244 note_type_openbsd(unsigned int nt) 1245 { 1246 switch (nt) { 1247 case 1: return "NT_OPENBSD_IDENT"; 1248 default: return (note_type_unknown(nt)); 1249 } 1250 } 1251 1252 static const char * 1253 note_type_unknown(unsigned int nt) 1254 { 1255 static char s_nt[32]; 1256 1257 snprintf(s_nt, sizeof(s_nt), 1258 nt >= 0x100 ? "<unknown: 0x%x>" : "<unknown: %u>", nt); 1259 return (s_nt); 1260 } 1261 1262 static const char * 1263 note_type_xen(unsigned int nt) 1264 { 1265 switch (nt) { 1266 case 0: return "XEN_ELFNOTE_INFO"; 1267 case 1: return "XEN_ELFNOTE_ENTRY"; 1268 case 2: return "XEN_ELFNOTE_HYPERCALL_PAGE"; 1269 case 3: return "XEN_ELFNOTE_VIRT_BASE"; 1270 case 4: return "XEN_ELFNOTE_PADDR_OFFSET"; 1271 case 5: return "XEN_ELFNOTE_XEN_VERSION"; 1272 case 6: return "XEN_ELFNOTE_GUEST_OS"; 1273 case 7: return "XEN_ELFNOTE_GUEST_VERSION"; 1274 case 8: return "XEN_ELFNOTE_LOADER"; 1275 case 9: return "XEN_ELFNOTE_PAE_MODE"; 1276 case 10: return "XEN_ELFNOTE_FEATURES"; 1277 case 11: return "XEN_ELFNOTE_BSD_SYMTAB"; 1278 case 12: return "XEN_ELFNOTE_HV_START_LOW"; 1279 case 13: return "XEN_ELFNOTE_L1_MFN_VALID"; 1280 case 14: return "XEN_ELFNOTE_SUSPEND_CANCEL"; 1281 case 15: return "XEN_ELFNOTE_INIT_P2M"; 1282 case 16: return "XEN_ELFNOTE_MOD_START_PFN"; 1283 case 17: return "XEN_ELFNOTE_SUPPORTED_FEATURES"; 1284 default: return (note_type_unknown(nt)); 1285 } 1286 } 1287 1288 static struct { 1289 const char *name; 1290 int value; 1291 } l_flag[] = { 1292 {"EXACT_MATCH", LL_EXACT_MATCH}, 1293 {"IGNORE_INT_VER", LL_IGNORE_INT_VER}, 1294 {"REQUIRE_MINOR", LL_REQUIRE_MINOR}, 1295 {"EXPORTS", LL_EXPORTS}, 1296 {"DELAY_LOAD", LL_DELAY_LOAD}, 1297 {"DELTA", LL_DELTA}, 1298 {NULL, 0} 1299 }; 1300 1301 static struct mips_option mips_exceptions_option[] = { 1302 {OEX_PAGE0, "PAGE0"}, 1303 {OEX_SMM, "SMM"}, 1304 {OEX_PRECISEFP, "PRECISEFP"}, 1305 {OEX_DISMISS, "DISMISS"}, 1306 {0, NULL} 1307 }; 1308 1309 static struct mips_option mips_pad_option[] = { 1310 {OPAD_PREFIX, "PREFIX"}, 1311 {OPAD_POSTFIX, "POSTFIX"}, 1312 {OPAD_SYMBOL, "SYMBOL"}, 1313 {0, NULL} 1314 }; 1315 1316 static struct mips_option mips_hwpatch_option[] = { 1317 {OHW_R4KEOP, "R4KEOP"}, 1318 {OHW_R8KPFETCH, "R8KPFETCH"}, 1319 {OHW_R5KEOP, "R5KEOP"}, 1320 {OHW_R5KCVTL, "R5KCVTL"}, 1321 {0, NULL} 1322 }; 1323 1324 static struct mips_option mips_hwa_option[] = { 1325 {OHWA0_R4KEOP_CHECKED, "R4KEOP_CHECKED"}, 1326 {OHWA0_R4KEOP_CLEAN, "R4KEOP_CLEAN"}, 1327 {0, NULL} 1328 }; 1329 1330 static struct mips_option mips_hwo_option[] = { 1331 {OHWO0_FIXADE, "FIXADE"}, 1332 {0, NULL} 1333 }; 1334 1335 static const char * 1336 option_kind(uint8_t kind) 1337 { 1338 static char s_kind[32]; 1339 1340 switch (kind) { 1341 case ODK_NULL: return "NULL"; 1342 case ODK_REGINFO: return "REGINFO"; 1343 case ODK_EXCEPTIONS: return "EXCEPTIONS"; 1344 case ODK_PAD: return "PAD"; 1345 case ODK_HWPATCH: return "HWPATCH"; 1346 case ODK_FILL: return "FILL"; 1347 case ODK_TAGS: return "TAGS"; 1348 case ODK_HWAND: return "HWAND"; 1349 case ODK_HWOR: return "HWOR"; 1350 case ODK_GP_GROUP: return "GP_GROUP"; 1351 case ODK_IDENT: return "IDENT"; 1352 default: 1353 snprintf(s_kind, sizeof(s_kind), "<unknown: %u>", kind); 1354 return (s_kind); 1355 } 1356 } 1357 1358 static const char * 1359 top_tag(unsigned int tag) 1360 { 1361 static char s_top_tag[32]; 1362 1363 switch (tag) { 1364 case 1: return "File Attributes"; 1365 case 2: return "Section Attributes"; 1366 case 3: return "Symbol Attributes"; 1367 default: 1368 snprintf(s_top_tag, sizeof(s_top_tag), "Unknown tag: %u", tag); 1369 return (s_top_tag); 1370 } 1371 } 1372 1373 static const char * 1374 aeabi_cpu_arch(uint64_t arch) 1375 { 1376 static char s_cpu_arch[32]; 1377 1378 switch (arch) { 1379 case 0: return "Pre-V4"; 1380 case 1: return "ARM v4"; 1381 case 2: return "ARM v4T"; 1382 case 3: return "ARM v5T"; 1383 case 4: return "ARM v5TE"; 1384 case 5: return "ARM v5TEJ"; 1385 case 6: return "ARM v6"; 1386 case 7: return "ARM v6KZ"; 1387 case 8: return "ARM v6T2"; 1388 case 9: return "ARM v6K"; 1389 case 10: return "ARM v7"; 1390 case 11: return "ARM v6-M"; 1391 case 12: return "ARM v6S-M"; 1392 case 13: return "ARM v7E-M"; 1393 default: 1394 snprintf(s_cpu_arch, sizeof(s_cpu_arch), 1395 "Unknown (%ju)", (uintmax_t) arch); 1396 return (s_cpu_arch); 1397 } 1398 } 1399 1400 static const char * 1401 aeabi_cpu_arch_profile(uint64_t pf) 1402 { 1403 static char s_arch_profile[32]; 1404 1405 switch (pf) { 1406 case 0: 1407 return "Not applicable"; 1408 case 0x41: /* 'A' */ 1409 return "Application Profile"; 1410 case 0x52: /* 'R' */ 1411 return "Real-Time Profile"; 1412 case 0x4D: /* 'M' */ 1413 return "Microcontroller Profile"; 1414 case 0x53: /* 'S' */ 1415 return "Application or Real-Time Profile"; 1416 default: 1417 snprintf(s_arch_profile, sizeof(s_arch_profile), 1418 "Unknown (%ju)\n", (uintmax_t) pf); 1419 return (s_arch_profile); 1420 } 1421 } 1422 1423 static const char * 1424 aeabi_arm_isa(uint64_t ai) 1425 { 1426 static char s_ai[32]; 1427 1428 switch (ai) { 1429 case 0: return "No"; 1430 case 1: return "Yes"; 1431 default: 1432 snprintf(s_ai, sizeof(s_ai), "Unknown (%ju)\n", 1433 (uintmax_t) ai); 1434 return (s_ai); 1435 } 1436 } 1437 1438 static const char * 1439 aeabi_thumb_isa(uint64_t ti) 1440 { 1441 static char s_ti[32]; 1442 1443 switch (ti) { 1444 case 0: return "No"; 1445 case 1: return "16-bit Thumb"; 1446 case 2: return "32-bit Thumb"; 1447 default: 1448 snprintf(s_ti, sizeof(s_ti), "Unknown (%ju)\n", 1449 (uintmax_t) ti); 1450 return (s_ti); 1451 } 1452 } 1453 1454 static const char * 1455 aeabi_fp_arch(uint64_t fp) 1456 { 1457 static char s_fp_arch[32]; 1458 1459 switch (fp) { 1460 case 0: return "No"; 1461 case 1: return "VFPv1"; 1462 case 2: return "VFPv2"; 1463 case 3: return "VFPv3"; 1464 case 4: return "VFPv3-D16"; 1465 case 5: return "VFPv4"; 1466 case 6: return "VFPv4-D16"; 1467 default: 1468 snprintf(s_fp_arch, sizeof(s_fp_arch), "Unknown (%ju)", 1469 (uintmax_t) fp); 1470 return (s_fp_arch); 1471 } 1472 } 1473 1474 static const char * 1475 aeabi_wmmx_arch(uint64_t wmmx) 1476 { 1477 static char s_wmmx[32]; 1478 1479 switch (wmmx) { 1480 case 0: return "No"; 1481 case 1: return "WMMXv1"; 1482 case 2: return "WMMXv2"; 1483 default: 1484 snprintf(s_wmmx, sizeof(s_wmmx), "Unknown (%ju)", 1485 (uintmax_t) wmmx); 1486 return (s_wmmx); 1487 } 1488 } 1489 1490 static const char * 1491 aeabi_adv_simd_arch(uint64_t simd) 1492 { 1493 static char s_simd[32]; 1494 1495 switch (simd) { 1496 case 0: return "No"; 1497 case 1: return "NEONv1"; 1498 case 2: return "NEONv2"; 1499 default: 1500 snprintf(s_simd, sizeof(s_simd), "Unknown (%ju)", 1501 (uintmax_t) simd); 1502 return (s_simd); 1503 } 1504 } 1505 1506 static const char * 1507 aeabi_pcs_config(uint64_t pcs) 1508 { 1509 static char s_pcs[32]; 1510 1511 switch (pcs) { 1512 case 0: return "None"; 1513 case 1: return "Bare platform"; 1514 case 2: return "Linux"; 1515 case 3: return "Linux DSO"; 1516 case 4: return "Palm OS 2004"; 1517 case 5: return "Palm OS (future)"; 1518 case 6: return "Symbian OS 2004"; 1519 case 7: return "Symbian OS (future)"; 1520 default: 1521 snprintf(s_pcs, sizeof(s_pcs), "Unknown (%ju)", 1522 (uintmax_t) pcs); 1523 return (s_pcs); 1524 } 1525 } 1526 1527 static const char * 1528 aeabi_pcs_r9(uint64_t r9) 1529 { 1530 static char s_r9[32]; 1531 1532 switch (r9) { 1533 case 0: return "V6"; 1534 case 1: return "SB"; 1535 case 2: return "TLS pointer"; 1536 case 3: return "Unused"; 1537 default: 1538 snprintf(s_r9, sizeof(s_r9), "Unknown (%ju)", (uintmax_t) r9); 1539 return (s_r9); 1540 } 1541 } 1542 1543 static const char * 1544 aeabi_pcs_rw(uint64_t rw) 1545 { 1546 static char s_rw[32]; 1547 1548 switch (rw) { 1549 case 0: return "Absolute"; 1550 case 1: return "PC-relative"; 1551 case 2: return "SB-relative"; 1552 case 3: return "None"; 1553 default: 1554 snprintf(s_rw, sizeof(s_rw), "Unknown (%ju)", (uintmax_t) rw); 1555 return (s_rw); 1556 } 1557 } 1558 1559 static const char * 1560 aeabi_pcs_ro(uint64_t ro) 1561 { 1562 static char s_ro[32]; 1563 1564 switch (ro) { 1565 case 0: return "Absolute"; 1566 case 1: return "PC-relative"; 1567 case 2: return "None"; 1568 default: 1569 snprintf(s_ro, sizeof(s_ro), "Unknown (%ju)", (uintmax_t) ro); 1570 return (s_ro); 1571 } 1572 } 1573 1574 static const char * 1575 aeabi_pcs_got(uint64_t got) 1576 { 1577 static char s_got[32]; 1578 1579 switch (got) { 1580 case 0: return "None"; 1581 case 1: return "direct"; 1582 case 2: return "indirect via GOT"; 1583 default: 1584 snprintf(s_got, sizeof(s_got), "Unknown (%ju)", 1585 (uintmax_t) got); 1586 return (s_got); 1587 } 1588 } 1589 1590 static const char * 1591 aeabi_pcs_wchar_t(uint64_t wt) 1592 { 1593 static char s_wt[32]; 1594 1595 switch (wt) { 1596 case 0: return "None"; 1597 case 2: return "wchar_t size 2"; 1598 case 4: return "wchar_t size 4"; 1599 default: 1600 snprintf(s_wt, sizeof(s_wt), "Unknown (%ju)", (uintmax_t) wt); 1601 return (s_wt); 1602 } 1603 } 1604 1605 static const char * 1606 aeabi_enum_size(uint64_t es) 1607 { 1608 static char s_es[32]; 1609 1610 switch (es) { 1611 case 0: return "None"; 1612 case 1: return "smallest"; 1613 case 2: return "32-bit"; 1614 case 3: return "visible 32-bit"; 1615 default: 1616 snprintf(s_es, sizeof(s_es), "Unknown (%ju)", (uintmax_t) es); 1617 return (s_es); 1618 } 1619 } 1620 1621 static const char * 1622 aeabi_align_needed(uint64_t an) 1623 { 1624 static char s_align_n[64]; 1625 1626 switch (an) { 1627 case 0: return "No"; 1628 case 1: return "8-byte align"; 1629 case 2: return "4-byte align"; 1630 case 3: return "Reserved"; 1631 default: 1632 if (an >= 4 && an <= 12) 1633 snprintf(s_align_n, sizeof(s_align_n), "8-byte align" 1634 " and up to 2^%ju-byte extended align", 1635 (uintmax_t) an); 1636 else 1637 snprintf(s_align_n, sizeof(s_align_n), "Unknown (%ju)", 1638 (uintmax_t) an); 1639 return (s_align_n); 1640 } 1641 } 1642 1643 static const char * 1644 aeabi_align_preserved(uint64_t ap) 1645 { 1646 static char s_align_p[128]; 1647 1648 switch (ap) { 1649 case 0: return "No"; 1650 case 1: return "8-byte align"; 1651 case 2: return "8-byte align and SP % 8 == 0"; 1652 case 3: return "Reserved"; 1653 default: 1654 if (ap >= 4 && ap <= 12) 1655 snprintf(s_align_p, sizeof(s_align_p), "8-byte align" 1656 " and SP %% 8 == 0 and up to 2^%ju-byte extended" 1657 " align", (uintmax_t) ap); 1658 else 1659 snprintf(s_align_p, sizeof(s_align_p), "Unknown (%ju)", 1660 (uintmax_t) ap); 1661 return (s_align_p); 1662 } 1663 } 1664 1665 static const char * 1666 aeabi_fp_rounding(uint64_t fr) 1667 { 1668 static char s_fp_r[32]; 1669 1670 switch (fr) { 1671 case 0: return "Unused"; 1672 case 1: return "Needed"; 1673 default: 1674 snprintf(s_fp_r, sizeof(s_fp_r), "Unknown (%ju)", 1675 (uintmax_t) fr); 1676 return (s_fp_r); 1677 } 1678 } 1679 1680 static const char * 1681 aeabi_fp_denormal(uint64_t fd) 1682 { 1683 static char s_fp_d[32]; 1684 1685 switch (fd) { 1686 case 0: return "Unused"; 1687 case 1: return "Needed"; 1688 case 2: return "Sign Only"; 1689 default: 1690 snprintf(s_fp_d, sizeof(s_fp_d), "Unknown (%ju)", 1691 (uintmax_t) fd); 1692 return (s_fp_d); 1693 } 1694 } 1695 1696 static const char * 1697 aeabi_fp_exceptions(uint64_t fe) 1698 { 1699 static char s_fp_e[32]; 1700 1701 switch (fe) { 1702 case 0: return "Unused"; 1703 case 1: return "Needed"; 1704 default: 1705 snprintf(s_fp_e, sizeof(s_fp_e), "Unknown (%ju)", 1706 (uintmax_t) fe); 1707 return (s_fp_e); 1708 } 1709 } 1710 1711 static const char * 1712 aeabi_fp_user_exceptions(uint64_t fu) 1713 { 1714 static char s_fp_u[32]; 1715 1716 switch (fu) { 1717 case 0: return "Unused"; 1718 case 1: return "Needed"; 1719 default: 1720 snprintf(s_fp_u, sizeof(s_fp_u), "Unknown (%ju)", 1721 (uintmax_t) fu); 1722 return (s_fp_u); 1723 } 1724 } 1725 1726 static const char * 1727 aeabi_fp_number_model(uint64_t fn) 1728 { 1729 static char s_fp_n[32]; 1730 1731 switch (fn) { 1732 case 0: return "Unused"; 1733 case 1: return "IEEE 754 normal"; 1734 case 2: return "RTABI"; 1735 case 3: return "IEEE 754"; 1736 default: 1737 snprintf(s_fp_n, sizeof(s_fp_n), "Unknown (%ju)", 1738 (uintmax_t) fn); 1739 return (s_fp_n); 1740 } 1741 } 1742 1743 static const char * 1744 aeabi_fp_16bit_format(uint64_t fp16) 1745 { 1746 static char s_fp_16[64]; 1747 1748 switch (fp16) { 1749 case 0: return "None"; 1750 case 1: return "IEEE 754"; 1751 case 2: return "VFPv3/Advanced SIMD (alternative format)"; 1752 default: 1753 snprintf(s_fp_16, sizeof(s_fp_16), "Unknown (%ju)", 1754 (uintmax_t) fp16); 1755 return (s_fp_16); 1756 } 1757 } 1758 1759 static const char * 1760 aeabi_mpext(uint64_t mp) 1761 { 1762 static char s_mp[32]; 1763 1764 switch (mp) { 1765 case 0: return "Not allowed"; 1766 case 1: return "Allowed"; 1767 default: 1768 snprintf(s_mp, sizeof(s_mp), "Unknown (%ju)", 1769 (uintmax_t) mp); 1770 return (s_mp); 1771 } 1772 } 1773 1774 static const char * 1775 aeabi_div(uint64_t du) 1776 { 1777 static char s_du[32]; 1778 1779 switch (du) { 1780 case 0: return "Yes (V7-R/V7-M)"; 1781 case 1: return "No"; 1782 case 2: return "Yes (V7-A)"; 1783 default: 1784 snprintf(s_du, sizeof(s_du), "Unknown (%ju)", 1785 (uintmax_t) du); 1786 return (s_du); 1787 } 1788 } 1789 1790 static const char * 1791 aeabi_t2ee(uint64_t t2ee) 1792 { 1793 static char s_t2ee[32]; 1794 1795 switch (t2ee) { 1796 case 0: return "Not allowed"; 1797 case 1: return "Allowed"; 1798 default: 1799 snprintf(s_t2ee, sizeof(s_t2ee), "Unknown(%ju)", 1800 (uintmax_t) t2ee); 1801 return (s_t2ee); 1802 } 1803 1804 } 1805 1806 static const char * 1807 aeabi_hardfp(uint64_t hfp) 1808 { 1809 static char s_hfp[32]; 1810 1811 switch (hfp) { 1812 case 0: return "Tag_FP_arch"; 1813 case 1: return "only SP"; 1814 case 2: return "only DP"; 1815 case 3: return "both SP and DP"; 1816 default: 1817 snprintf(s_hfp, sizeof(s_hfp), "Unknown (%ju)", 1818 (uintmax_t) hfp); 1819 return (s_hfp); 1820 } 1821 } 1822 1823 static const char * 1824 aeabi_vfp_args(uint64_t va) 1825 { 1826 static char s_va[32]; 1827 1828 switch (va) { 1829 case 0: return "AAPCS (base variant)"; 1830 case 1: return "AAPCS (VFP variant)"; 1831 case 2: return "toolchain-specific"; 1832 default: 1833 snprintf(s_va, sizeof(s_va), "Unknown (%ju)", (uintmax_t) va); 1834 return (s_va); 1835 } 1836 } 1837 1838 static const char * 1839 aeabi_wmmx_args(uint64_t wa) 1840 { 1841 static char s_wa[32]; 1842 1843 switch (wa) { 1844 case 0: return "AAPCS (base variant)"; 1845 case 1: return "Intel WMMX"; 1846 case 2: return "toolchain-specific"; 1847 default: 1848 snprintf(s_wa, sizeof(s_wa), "Unknown(%ju)", (uintmax_t) wa); 1849 return (s_wa); 1850 } 1851 } 1852 1853 static const char * 1854 aeabi_unaligned_access(uint64_t ua) 1855 { 1856 static char s_ua[32]; 1857 1858 switch (ua) { 1859 case 0: return "Not allowed"; 1860 case 1: return "Allowed"; 1861 default: 1862 snprintf(s_ua, sizeof(s_ua), "Unknown(%ju)", (uintmax_t) ua); 1863 return (s_ua); 1864 } 1865 } 1866 1867 static const char * 1868 aeabi_fp_hpext(uint64_t fh) 1869 { 1870 static char s_fh[32]; 1871 1872 switch (fh) { 1873 case 0: return "Not allowed"; 1874 case 1: return "Allowed"; 1875 default: 1876 snprintf(s_fh, sizeof(s_fh), "Unknown(%ju)", (uintmax_t) fh); 1877 return (s_fh); 1878 } 1879 } 1880 1881 static const char * 1882 aeabi_optm_goal(uint64_t og) 1883 { 1884 static char s_og[32]; 1885 1886 switch (og) { 1887 case 0: return "None"; 1888 case 1: return "Speed"; 1889 case 2: return "Speed aggressive"; 1890 case 3: return "Space"; 1891 case 4: return "Space aggressive"; 1892 case 5: return "Debugging"; 1893 case 6: return "Best Debugging"; 1894 default: 1895 snprintf(s_og, sizeof(s_og), "Unknown(%ju)", (uintmax_t) og); 1896 return (s_og); 1897 } 1898 } 1899 1900 static const char * 1901 aeabi_fp_optm_goal(uint64_t fog) 1902 { 1903 static char s_fog[32]; 1904 1905 switch (fog) { 1906 case 0: return "None"; 1907 case 1: return "Speed"; 1908 case 2: return "Speed aggressive"; 1909 case 3: return "Space"; 1910 case 4: return "Space aggressive"; 1911 case 5: return "Accurary"; 1912 case 6: return "Best Accurary"; 1913 default: 1914 snprintf(s_fog, sizeof(s_fog), "Unknown(%ju)", 1915 (uintmax_t) fog); 1916 return (s_fog); 1917 } 1918 } 1919 1920 static const char * 1921 aeabi_virtual(uint64_t vt) 1922 { 1923 static char s_virtual[64]; 1924 1925 switch (vt) { 1926 case 0: return "No"; 1927 case 1: return "TrustZone"; 1928 case 2: return "Virtualization extension"; 1929 case 3: return "TrustZone and virtualization extension"; 1930 default: 1931 snprintf(s_virtual, sizeof(s_virtual), "Unknown(%ju)", 1932 (uintmax_t) vt); 1933 return (s_virtual); 1934 } 1935 } 1936 1937 static struct { 1938 uint64_t tag; 1939 const char *s_tag; 1940 const char *(*get_desc)(uint64_t val); 1941 } aeabi_tags[] = { 1942 {4, "Tag_CPU_raw_name", NULL}, 1943 {5, "Tag_CPU_name", NULL}, 1944 {6, "Tag_CPU_arch", aeabi_cpu_arch}, 1945 {7, "Tag_CPU_arch_profile", aeabi_cpu_arch_profile}, 1946 {8, "Tag_ARM_ISA_use", aeabi_arm_isa}, 1947 {9, "Tag_THUMB_ISA_use", aeabi_thumb_isa}, 1948 {10, "Tag_FP_arch", aeabi_fp_arch}, 1949 {11, "Tag_WMMX_arch", aeabi_wmmx_arch}, 1950 {12, "Tag_Advanced_SIMD_arch", aeabi_adv_simd_arch}, 1951 {13, "Tag_PCS_config", aeabi_pcs_config}, 1952 {14, "Tag_ABI_PCS_R9_use", aeabi_pcs_r9}, 1953 {15, "Tag_ABI_PCS_RW_data", aeabi_pcs_rw}, 1954 {16, "Tag_ABI_PCS_RO_data", aeabi_pcs_ro}, 1955 {17, "Tag_ABI_PCS_GOT_use", aeabi_pcs_got}, 1956 {18, "Tag_ABI_PCS_wchar_t", aeabi_pcs_wchar_t}, 1957 {19, "Tag_ABI_FP_rounding", aeabi_fp_rounding}, 1958 {20, "Tag_ABI_FP_denormal", aeabi_fp_denormal}, 1959 {21, "Tag_ABI_FP_exceptions", aeabi_fp_exceptions}, 1960 {22, "Tag_ABI_FP_user_exceptions", aeabi_fp_user_exceptions}, 1961 {23, "Tag_ABI_FP_number_model", aeabi_fp_number_model}, 1962 {24, "Tag_ABI_align_needed", aeabi_align_needed}, 1963 {25, "Tag_ABI_align_preserved", aeabi_align_preserved}, 1964 {26, "Tag_ABI_enum_size", aeabi_enum_size}, 1965 {27, "Tag_ABI_HardFP_use", aeabi_hardfp}, 1966 {28, "Tag_ABI_VFP_args", aeabi_vfp_args}, 1967 {29, "Tag_ABI_WMMX_args", aeabi_wmmx_args}, 1968 {30, "Tag_ABI_optimization_goals", aeabi_optm_goal}, 1969 {31, "Tag_ABI_FP_optimization_goals", aeabi_fp_optm_goal}, 1970 {32, "Tag_compatibility", NULL}, 1971 {34, "Tag_CPU_unaligned_access", aeabi_unaligned_access}, 1972 {36, "Tag_FP_HP_extension", aeabi_fp_hpext}, 1973 {38, "Tag_ABI_FP_16bit_format", aeabi_fp_16bit_format}, 1974 {42, "Tag_MPextension_use", aeabi_mpext}, 1975 {44, "Tag_DIV_use", aeabi_div}, 1976 {64, "Tag_nodefaults", NULL}, 1977 {65, "Tag_also_compatible_with", NULL}, 1978 {66, "Tag_T2EE_use", aeabi_t2ee}, 1979 {67, "Tag_conformance", NULL}, 1980 {68, "Tag_Virtualization_use", aeabi_virtual}, 1981 {70, "Tag_MPextension_use", aeabi_mpext}, 1982 }; 1983 1984 static const char * 1985 mips_abi_fp(uint64_t fp) 1986 { 1987 static char s_mips_abi_fp[64]; 1988 1989 switch (fp) { 1990 case 0: return "N/A"; 1991 case 1: return "Hard float (double precision)"; 1992 case 2: return "Hard float (single precision)"; 1993 case 3: return "Soft float"; 1994 case 4: return "64-bit float (-mips32r2 -mfp64)"; 1995 default: 1996 snprintf(s_mips_abi_fp, sizeof(s_mips_abi_fp), "Unknown(%ju)", 1997 (uintmax_t) fp); 1998 return (s_mips_abi_fp); 1999 } 2000 } 2001 2002 static const char * 2003 ppc_abi_fp(uint64_t fp) 2004 { 2005 static char s_ppc_abi_fp[64]; 2006 2007 switch (fp) { 2008 case 0: return "N/A"; 2009 case 1: return "Hard float (double precision)"; 2010 case 2: return "Soft float"; 2011 case 3: return "Hard float (single precision)"; 2012 default: 2013 snprintf(s_ppc_abi_fp, sizeof(s_ppc_abi_fp), "Unknown(%ju)", 2014 (uintmax_t) fp); 2015 return (s_ppc_abi_fp); 2016 } 2017 } 2018 2019 static const char * 2020 ppc_abi_vector(uint64_t vec) 2021 { 2022 static char s_vec[64]; 2023 2024 switch (vec) { 2025 case 0: return "N/A"; 2026 case 1: return "Generic purpose registers"; 2027 case 2: return "AltiVec registers"; 2028 case 3: return "SPE registers"; 2029 default: 2030 snprintf(s_vec, sizeof(s_vec), "Unknown(%ju)", (uintmax_t) vec); 2031 return (s_vec); 2032 } 2033 } 2034 2035 static const char * 2036 dwarf_reg(unsigned int mach, unsigned int reg) 2037 { 2038 2039 switch (mach) { 2040 case EM_386: 2041 case EM_IAMCU: 2042 switch (reg) { 2043 case 0: return "eax"; 2044 case 1: return "ecx"; 2045 case 2: return "edx"; 2046 case 3: return "ebx"; 2047 case 4: return "esp"; 2048 case 5: return "ebp"; 2049 case 6: return "esi"; 2050 case 7: return "edi"; 2051 case 8: return "eip"; 2052 case 9: return "eflags"; 2053 case 11: return "st0"; 2054 case 12: return "st1"; 2055 case 13: return "st2"; 2056 case 14: return "st3"; 2057 case 15: return "st4"; 2058 case 16: return "st5"; 2059 case 17: return "st6"; 2060 case 18: return "st7"; 2061 case 21: return "xmm0"; 2062 case 22: return "xmm1"; 2063 case 23: return "xmm2"; 2064 case 24: return "xmm3"; 2065 case 25: return "xmm4"; 2066 case 26: return "xmm5"; 2067 case 27: return "xmm6"; 2068 case 28: return "xmm7"; 2069 case 29: return "mm0"; 2070 case 30: return "mm1"; 2071 case 31: return "mm2"; 2072 case 32: return "mm3"; 2073 case 33: return "mm4"; 2074 case 34: return "mm5"; 2075 case 35: return "mm6"; 2076 case 36: return "mm7"; 2077 case 37: return "fcw"; 2078 case 38: return "fsw"; 2079 case 39: return "mxcsr"; 2080 case 40: return "es"; 2081 case 41: return "cs"; 2082 case 42: return "ss"; 2083 case 43: return "ds"; 2084 case 44: return "fs"; 2085 case 45: return "gs"; 2086 case 48: return "tr"; 2087 case 49: return "ldtr"; 2088 default: return (NULL); 2089 } 2090 case EM_RISCV: 2091 switch (reg) { 2092 case 0: return "zero"; 2093 case 1: return "ra"; 2094 case 2: return "sp"; 2095 case 3: return "gp"; 2096 case 4: return "tp"; 2097 case 5: return "t0"; 2098 case 6: return "t1"; 2099 case 7: return "t2"; 2100 case 8: return "s0"; 2101 case 9: return "s1"; 2102 case 10: return "a0"; 2103 case 11: return "a1"; 2104 case 12: return "a2"; 2105 case 13: return "a3"; 2106 case 14: return "a4"; 2107 case 15: return "a5"; 2108 case 16: return "a6"; 2109 case 17: return "a7"; 2110 case 18: return "s2"; 2111 case 19: return "s3"; 2112 case 20: return "s4"; 2113 case 21: return "s5"; 2114 case 22: return "s6"; 2115 case 23: return "s7"; 2116 case 24: return "s8"; 2117 case 25: return "s9"; 2118 case 26: return "s10"; 2119 case 27: return "s11"; 2120 case 28: return "t3"; 2121 case 29: return "t4"; 2122 case 30: return "t5"; 2123 case 31: return "t6"; 2124 case 32: return "ft0"; 2125 case 33: return "ft1"; 2126 case 34: return "ft2"; 2127 case 35: return "ft3"; 2128 case 36: return "ft4"; 2129 case 37: return "ft5"; 2130 case 38: return "ft6"; 2131 case 39: return "ft7"; 2132 case 40: return "fs0"; 2133 case 41: return "fs1"; 2134 case 42: return "fa0"; 2135 case 43: return "fa1"; 2136 case 44: return "fa2"; 2137 case 45: return "fa3"; 2138 case 46: return "fa4"; 2139 case 47: return "fa5"; 2140 case 48: return "fa6"; 2141 case 49: return "fa7"; 2142 case 50: return "fs2"; 2143 case 51: return "fs3"; 2144 case 52: return "fs4"; 2145 case 53: return "fs5"; 2146 case 54: return "fs6"; 2147 case 55: return "fs7"; 2148 case 56: return "fs8"; 2149 case 57: return "fs9"; 2150 case 58: return "fs10"; 2151 case 59: return "fs11"; 2152 case 60: return "ft8"; 2153 case 61: return "ft9"; 2154 case 62: return "ft10"; 2155 case 63: return "ft11"; 2156 default: return (NULL); 2157 } 2158 case EM_X86_64: 2159 switch (reg) { 2160 case 0: return "rax"; 2161 case 1: return "rdx"; 2162 case 2: return "rcx"; 2163 case 3: return "rbx"; 2164 case 4: return "rsi"; 2165 case 5: return "rdi"; 2166 case 6: return "rbp"; 2167 case 7: return "rsp"; 2168 case 16: return "rip"; 2169 case 17: return "xmm0"; 2170 case 18: return "xmm1"; 2171 case 19: return "xmm2"; 2172 case 20: return "xmm3"; 2173 case 21: return "xmm4"; 2174 case 22: return "xmm5"; 2175 case 23: return "xmm6"; 2176 case 24: return "xmm7"; 2177 case 25: return "xmm8"; 2178 case 26: return "xmm9"; 2179 case 27: return "xmm10"; 2180 case 28: return "xmm11"; 2181 case 29: return "xmm12"; 2182 case 30: return "xmm13"; 2183 case 31: return "xmm14"; 2184 case 32: return "xmm15"; 2185 case 33: return "st0"; 2186 case 34: return "st1"; 2187 case 35: return "st2"; 2188 case 36: return "st3"; 2189 case 37: return "st4"; 2190 case 38: return "st5"; 2191 case 39: return "st6"; 2192 case 40: return "st7"; 2193 case 41: return "mm0"; 2194 case 42: return "mm1"; 2195 case 43: return "mm2"; 2196 case 44: return "mm3"; 2197 case 45: return "mm4"; 2198 case 46: return "mm5"; 2199 case 47: return "mm6"; 2200 case 48: return "mm7"; 2201 case 49: return "rflags"; 2202 case 50: return "es"; 2203 case 51: return "cs"; 2204 case 52: return "ss"; 2205 case 53: return "ds"; 2206 case 54: return "fs"; 2207 case 55: return "gs"; 2208 case 58: return "fs.base"; 2209 case 59: return "gs.base"; 2210 case 62: return "tr"; 2211 case 63: return "ldtr"; 2212 case 64: return "mxcsr"; 2213 case 65: return "fcw"; 2214 case 66: return "fsw"; 2215 default: return (NULL); 2216 } 2217 default: 2218 return (NULL); 2219 } 2220 } 2221 2222 static void 2223 dump_ehdr(struct readelf *re) 2224 { 2225 size_t phnum, shnum, shstrndx; 2226 int i; 2227 2228 printf("ELF Header:\n"); 2229 2230 /* e_ident[]. */ 2231 printf(" Magic: "); 2232 for (i = 0; i < EI_NIDENT; i++) 2233 printf("%.2x ", re->ehdr.e_ident[i]); 2234 putchar('\n'); 2235 2236 /* EI_CLASS. */ 2237 printf("%-37s%s\n", " Class:", elf_class(re->ehdr.e_ident[EI_CLASS])); 2238 2239 /* EI_DATA. */ 2240 printf("%-37s%s\n", " Data:", elf_endian(re->ehdr.e_ident[EI_DATA])); 2241 2242 /* EI_VERSION. */ 2243 printf("%-37s%d %s\n", " Version:", re->ehdr.e_ident[EI_VERSION], 2244 elf_ver(re->ehdr.e_ident[EI_VERSION])); 2245 2246 /* EI_OSABI. */ 2247 printf("%-37s%s\n", " OS/ABI:", elf_osabi(re->ehdr.e_ident[EI_OSABI])); 2248 2249 /* EI_ABIVERSION. */ 2250 printf("%-37s%d\n", " ABI Version:", re->ehdr.e_ident[EI_ABIVERSION]); 2251 2252 /* e_type. */ 2253 printf("%-37s%s\n", " Type:", elf_type(re->ehdr.e_type)); 2254 2255 /* e_machine. */ 2256 printf("%-37s%s\n", " Machine:", elf_machine(re->ehdr.e_machine)); 2257 2258 /* e_version. */ 2259 printf("%-37s%#x\n", " Version:", re->ehdr.e_version); 2260 2261 /* e_entry. */ 2262 printf("%-37s%#jx\n", " Entry point address:", 2263 (uintmax_t)re->ehdr.e_entry); 2264 2265 /* e_phoff. */ 2266 printf("%-37s%ju (bytes into file)\n", " Start of program headers:", 2267 (uintmax_t)re->ehdr.e_phoff); 2268 2269 /* e_shoff. */ 2270 printf("%-37s%ju (bytes into file)\n", " Start of section headers:", 2271 (uintmax_t)re->ehdr.e_shoff); 2272 2273 /* e_flags. */ 2274 printf("%-37s%#x", " Flags:", re->ehdr.e_flags); 2275 dump_eflags(re, re->ehdr.e_flags); 2276 putchar('\n'); 2277 2278 /* e_ehsize. */ 2279 printf("%-37s%u (bytes)\n", " Size of this header:", 2280 re->ehdr.e_ehsize); 2281 2282 /* e_phentsize. */ 2283 printf("%-37s%u (bytes)\n", " Size of program headers:", 2284 re->ehdr.e_phentsize); 2285 2286 /* e_phnum. */ 2287 printf("%-37s%u", " Number of program headers:", re->ehdr.e_phnum); 2288 if (re->ehdr.e_phnum == PN_XNUM) { 2289 /* Extended program header numbering is in use. */ 2290 if (elf_getphnum(re->elf, &phnum)) 2291 printf(" (%zu)", phnum); 2292 } 2293 putchar('\n'); 2294 2295 /* e_shentsize. */ 2296 printf("%-37s%u (bytes)\n", " Size of section headers:", 2297 re->ehdr.e_shentsize); 2298 2299 /* e_shnum. */ 2300 printf("%-37s%u", " Number of section headers:", re->ehdr.e_shnum); 2301 if (re->ehdr.e_shnum == SHN_UNDEF) { 2302 /* Extended section numbering is in use. */ 2303 if (elf_getshnum(re->elf, &shnum)) 2304 printf(" (%ju)", (uintmax_t)shnum); 2305 } 2306 putchar('\n'); 2307 2308 /* e_shstrndx. */ 2309 printf("%-37s%u", " Section header string table index:", 2310 re->ehdr.e_shstrndx); 2311 if (re->ehdr.e_shstrndx == SHN_XINDEX) { 2312 /* Extended section numbering is in use. */ 2313 if (elf_getshstrndx(re->elf, &shstrndx)) 2314 printf(" (%ju)", (uintmax_t)shstrndx); 2315 } 2316 putchar('\n'); 2317 } 2318 2319 static void 2320 dump_eflags(struct readelf *re, uint64_t e_flags) 2321 { 2322 struct eflags_desc *edesc; 2323 int arm_eabi; 2324 2325 edesc = NULL; 2326 switch (re->ehdr.e_machine) { 2327 case EM_ARM: 2328 arm_eabi = (e_flags & EF_ARM_EABIMASK) >> 24; 2329 if (arm_eabi == 0) 2330 printf(", GNU EABI"); 2331 else if (arm_eabi <= 5) 2332 printf(", Version%d EABI", arm_eabi); 2333 edesc = arm_eflags_desc; 2334 break; 2335 case EM_MIPS: 2336 case EM_MIPS_RS3_LE: 2337 switch ((e_flags & EF_MIPS_ARCH) >> 28) { 2338 case 0: printf(", mips1"); break; 2339 case 1: printf(", mips2"); break; 2340 case 2: printf(", mips3"); break; 2341 case 3: printf(", mips4"); break; 2342 case 4: printf(", mips5"); break; 2343 case 5: printf(", mips32"); break; 2344 case 6: printf(", mips64"); break; 2345 case 7: printf(", mips32r2"); break; 2346 case 8: printf(", mips64r2"); break; 2347 default: break; 2348 } 2349 switch ((e_flags & 0x00FF0000) >> 16) { 2350 case 0x81: printf(", 3900"); break; 2351 case 0x82: printf(", 4010"); break; 2352 case 0x83: printf(", 4100"); break; 2353 case 0x85: printf(", 4650"); break; 2354 case 0x87: printf(", 4120"); break; 2355 case 0x88: printf(", 4111"); break; 2356 case 0x8a: printf(", sb1"); break; 2357 case 0x8b: printf(", octeon"); break; 2358 case 0x8c: printf(", xlr"); break; 2359 case 0x91: printf(", 5400"); break; 2360 case 0x98: printf(", 5500"); break; 2361 case 0x99: printf(", 9000"); break; 2362 case 0xa0: printf(", loongson-2e"); break; 2363 case 0xa1: printf(", loongson-2f"); break; 2364 default: break; 2365 } 2366 switch ((e_flags & 0x0000F000) >> 12) { 2367 case 1: printf(", o32"); break; 2368 case 2: printf(", o64"); break; 2369 case 3: printf(", eabi32"); break; 2370 case 4: printf(", eabi64"); break; 2371 default: break; 2372 } 2373 edesc = mips_eflags_desc; 2374 break; 2375 case EM_PPC64: 2376 switch (e_flags) { 2377 case 0: printf(", Unspecified or Power ELF V1 ABI"); break; 2378 case 1: printf(", Power ELF V1 ABI"); break; 2379 case 2: printf(", OpenPOWER ELF V2 ABI"); break; 2380 default: break; 2381 } 2382 /* explicit fall through*/ 2383 case EM_PPC: 2384 edesc = powerpc_eflags_desc; 2385 break; 2386 case EM_RISCV: 2387 switch (e_flags & EF_RISCV_FLOAT_ABI_MASK) { 2388 case EF_RISCV_FLOAT_ABI_SOFT: 2389 printf(", soft-float ABI"); 2390 break; 2391 case EF_RISCV_FLOAT_ABI_SINGLE: 2392 printf(", single-float ABI"); 2393 break; 2394 case EF_RISCV_FLOAT_ABI_DOUBLE: 2395 printf(", double-float ABI"); 2396 break; 2397 case EF_RISCV_FLOAT_ABI_QUAD: 2398 printf(", quad-float ABI"); 2399 break; 2400 } 2401 edesc = riscv_eflags_desc; 2402 break; 2403 case EM_SPARC: 2404 case EM_SPARC32PLUS: 2405 case EM_SPARCV9: 2406 switch ((e_flags & EF_SPARCV9_MM)) { 2407 case EF_SPARCV9_TSO: printf(", tso"); break; 2408 case EF_SPARCV9_PSO: printf(", pso"); break; 2409 case EF_SPARCV9_MM: printf(", rmo"); break; 2410 default: break; 2411 } 2412 edesc = sparc_eflags_desc; 2413 break; 2414 default: 2415 break; 2416 } 2417 2418 if (edesc != NULL) { 2419 while (edesc->desc != NULL) { 2420 if (e_flags & edesc->flag) 2421 printf(", %s", edesc->desc); 2422 edesc++; 2423 } 2424 } 2425 } 2426 2427 static void 2428 dump_phdr(struct readelf *re) 2429 { 2430 const char *rawfile; 2431 GElf_Phdr phdr; 2432 size_t phnum, size; 2433 int i, j; 2434 2435 #define PH_HDR "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz", \ 2436 "MemSiz", "Flg", "Align" 2437 #define PH_CT phdr_type(re->ehdr.e_machine, phdr.p_type), \ 2438 (uintmax_t)phdr.p_offset, (uintmax_t)phdr.p_vaddr, \ 2439 (uintmax_t)phdr.p_paddr, (uintmax_t)phdr.p_filesz, \ 2440 (uintmax_t)phdr.p_memsz, \ 2441 phdr.p_flags & PF_R ? 'R' : ' ', \ 2442 phdr.p_flags & PF_W ? 'W' : ' ', \ 2443 phdr.p_flags & PF_X ? 'E' : ' ', \ 2444 (uintmax_t)phdr.p_align 2445 2446 if (elf_getphnum(re->elf, &phnum) == 0) { 2447 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 2448 return; 2449 } 2450 if (phnum == 0) { 2451 printf("\nThere are no program headers in this file.\n"); 2452 return; 2453 } 2454 2455 printf("\nElf file type is %s", elf_type(re->ehdr.e_type)); 2456 printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry); 2457 printf("There are %ju program headers, starting at offset %ju\n", 2458 (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff); 2459 2460 /* Dump program headers. */ 2461 printf("\nProgram Headers:\n"); 2462 if (re->ec == ELFCLASS32) 2463 printf(" %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR); 2464 else if (re->options & RE_WW) 2465 printf(" %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR); 2466 else 2467 printf(" %-15s%-19s%-19s%s\n %-19s%-20s" 2468 "%-7s%s\n", PH_HDR); 2469 for (i = 0; (size_t) i < phnum; i++) { 2470 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2471 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2472 continue; 2473 } 2474 /* TODO: Add arch-specific segment type dump. */ 2475 if (re->ec == ELFCLASS32) 2476 printf(" %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx " 2477 "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT); 2478 else if (re->options & RE_WW) 2479 printf(" %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx " 2480 "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT); 2481 else 2482 printf(" %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n" 2483 " 0x%16.16jx 0x%16.16jx %c%c%c" 2484 " %#jx\n", PH_CT); 2485 if (phdr.p_type == PT_INTERP) { 2486 if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) { 2487 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 2488 continue; 2489 } 2490 if (phdr.p_offset >= size) { 2491 warnx("invalid program header offset"); 2492 continue; 2493 } 2494 printf(" [Requesting program interpreter: %s]\n", 2495 rawfile + phdr.p_offset); 2496 } 2497 } 2498 2499 /* Dump section to segment mapping. */ 2500 if (re->shnum == 0) 2501 return; 2502 printf("\n Section to Segment mapping:\n"); 2503 printf(" Segment Sections...\n"); 2504 for (i = 0; (size_t)i < phnum; i++) { 2505 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2506 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2507 continue; 2508 } 2509 printf(" %2.2d ", i); 2510 /* skip NULL section. */ 2511 for (j = 1; (size_t)j < re->shnum; j++) { 2512 if (re->sl[j].off < phdr.p_offset) 2513 continue; 2514 if (re->sl[j].off + re->sl[j].sz > 2515 phdr.p_offset + phdr.p_filesz && 2516 re->sl[j].type != SHT_NOBITS) 2517 continue; 2518 if (re->sl[j].addr < phdr.p_vaddr || 2519 re->sl[j].addr + re->sl[j].sz > 2520 phdr.p_vaddr + phdr.p_memsz) 2521 continue; 2522 if (phdr.p_type == PT_TLS && 2523 (re->sl[j].flags & SHF_TLS) == 0) 2524 continue; 2525 printf("%s ", re->sl[j].name); 2526 } 2527 printf("\n"); 2528 } 2529 #undef PH_HDR 2530 #undef PH_CT 2531 } 2532 2533 static char * 2534 section_flags(struct readelf *re, struct section *s) 2535 { 2536 #define BUF_SZ 256 2537 static char buf[BUF_SZ]; 2538 int i, p, nb; 2539 2540 p = 0; 2541 nb = re->ec == ELFCLASS32 ? 8 : 16; 2542 if (re->options & RE_T) { 2543 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb, 2544 (uintmax_t)s->flags); 2545 p += nb + 4; 2546 } 2547 for (i = 0; section_flag[i].ln != NULL; i++) { 2548 if ((s->flags & section_flag[i].value) == 0) 2549 continue; 2550 if (re->options & RE_T) { 2551 snprintf(&buf[p], BUF_SZ - p, "%s, ", 2552 section_flag[i].ln); 2553 p += strlen(section_flag[i].ln) + 2; 2554 } else 2555 buf[p++] = section_flag[i].sn; 2556 } 2557 if (re->options & RE_T && p > nb + 4) 2558 p -= 2; 2559 buf[p] = '\0'; 2560 2561 return (buf); 2562 } 2563 2564 static void 2565 dump_shdr(struct readelf *re) 2566 { 2567 struct section *s; 2568 int i; 2569 2570 #define S_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2571 "Flg", "Lk", "Inf", "Al" 2572 #define S_HDRL "[Nr] Name", "Type", "Address", "Offset", "Size", \ 2573 "EntSize", "Flags", "Link", "Info", "Align" 2574 #define ST_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2575 "Lk", "Inf", "Al", "Flags" 2576 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link", \ 2577 "Size", "EntSize", "Info", "Align", "Flags" 2578 #define S_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2579 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2580 (uintmax_t)s->entsize, section_flags(re, s), \ 2581 s->link, s->info, (uintmax_t)s->align 2582 #define ST_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2583 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2584 (uintmax_t)s->entsize, s->link, s->info, \ 2585 (uintmax_t)s->align, section_flags(re, s) 2586 #define ST_CTL i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2587 (uintmax_t)s->addr, (uintmax_t)s->off, s->link, \ 2588 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info, \ 2589 (uintmax_t)s->align, section_flags(re, s) 2590 2591 if (re->shnum == 0) { 2592 printf("\nThere are no sections in this file.\n"); 2593 return; 2594 } 2595 printf("There are %ju section headers, starting at offset 0x%jx:\n", 2596 (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff); 2597 printf("\nSection Headers:\n"); 2598 if (re->ec == ELFCLASS32) { 2599 if (re->options & RE_T) 2600 printf(" %s\n %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n" 2601 "%12s\n", ST_HDR); 2602 else 2603 printf(" %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2604 S_HDR); 2605 } else if (re->options & RE_WW) { 2606 if (re->options & RE_T) 2607 printf(" %s\n %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n" 2608 "%12s\n", ST_HDR); 2609 else 2610 printf(" %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2611 S_HDR); 2612 } else { 2613 if (re->options & RE_T) 2614 printf(" %s\n %-18s%-17s%-18s%s\n %-18s" 2615 "%-17s%-18s%s\n%12s\n", ST_HDRL); 2616 else 2617 printf(" %-23s%-17s%-18s%s\n %-18s%-17s%-7s%" 2618 "-6s%-6s%s\n", S_HDRL); 2619 } 2620 for (i = 0; (size_t)i < re->shnum; i++) { 2621 s = &re->sl[i]; 2622 if (re->ec == ELFCLASS32) { 2623 if (re->options & RE_T) 2624 printf(" [%2d] %s\n %-15.15s %8.8jx" 2625 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2626 " %s\n", ST_CT); 2627 else 2628 printf(" [%2d] %-17.17s %-15.15s %8.8jx" 2629 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2630 S_CT); 2631 } else if (re->options & RE_WW) { 2632 if (re->options & RE_T) 2633 printf(" [%2d] %s\n %-15.15s %16.16jx" 2634 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2635 " %s\n", ST_CT); 2636 else 2637 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2638 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2639 S_CT); 2640 } else { 2641 if (re->options & RE_T) 2642 printf(" [%2d] %s\n %-15.15s %16.16jx" 2643 " %16.16jx %u\n %16.16jx %16.16jx" 2644 " %-16u %ju\n %s\n", ST_CTL); 2645 else 2646 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2647 " %8.8jx\n %16.16jx %16.16jx " 2648 "%3s %2u %3u %ju\n", S_CT); 2649 } 2650 } 2651 if ((re->options & RE_T) == 0) 2652 printf("Key to Flags:\n W (write), A (alloc)," 2653 " X (execute), M (merge), S (strings)\n" 2654 " I (info), L (link order), G (group), x (unknown)\n" 2655 " O (extra OS processing required)" 2656 " o (OS specific), p (processor specific)\n"); 2657 2658 #undef S_HDR 2659 #undef S_HDRL 2660 #undef ST_HDR 2661 #undef ST_HDRL 2662 #undef S_CT 2663 #undef ST_CT 2664 #undef ST_CTL 2665 } 2666 2667 /* 2668 * Return number of entries in the given section. We'd prefer ent_count be a 2669 * size_t *, but libelf APIs already use int for section indices. 2670 */ 2671 static int 2672 get_ent_count(struct section *s, int *ent_count) 2673 { 2674 if (s->entsize == 0) { 2675 warnx("section %s has entry size 0", s->name); 2676 return (0); 2677 } else if (s->sz / s->entsize > INT_MAX) { 2678 warnx("section %s has invalid section count", s->name); 2679 return (0); 2680 } 2681 *ent_count = (int)(s->sz / s->entsize); 2682 return (1); 2683 } 2684 2685 static void 2686 dump_dynamic(struct readelf *re) 2687 { 2688 GElf_Dyn dyn; 2689 Elf_Data *d; 2690 struct section *s; 2691 int elferr, i, is_dynamic, j, jmax, nentries; 2692 2693 is_dynamic = 0; 2694 2695 for (i = 0; (size_t)i < re->shnum; i++) { 2696 s = &re->sl[i]; 2697 if (s->type != SHT_DYNAMIC) 2698 continue; 2699 (void) elf_errno(); 2700 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2701 elferr = elf_errno(); 2702 if (elferr != 0) 2703 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 2704 continue; 2705 } 2706 if (d->d_size <= 0) 2707 continue; 2708 2709 is_dynamic = 1; 2710 2711 /* Determine the actual number of table entries. */ 2712 nentries = 0; 2713 if (!get_ent_count(s, &jmax)) 2714 continue; 2715 for (j = 0; j < jmax; j++) { 2716 if (gelf_getdyn(d, j, &dyn) != &dyn) { 2717 warnx("gelf_getdyn failed: %s", 2718 elf_errmsg(-1)); 2719 continue; 2720 } 2721 nentries ++; 2722 if (dyn.d_tag == DT_NULL) 2723 break; 2724 } 2725 2726 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off); 2727 printf(" contains %u entries:\n", nentries); 2728 2729 if (re->ec == ELFCLASS32) 2730 printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value"); 2731 else 2732 printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value"); 2733 2734 for (j = 0; j < nentries; j++) { 2735 if (gelf_getdyn(d, j, &dyn) != &dyn) 2736 continue; 2737 /* Dump dynamic entry type. */ 2738 if (re->ec == ELFCLASS32) 2739 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag); 2740 else 2741 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag); 2742 printf(" %-20s", dt_type(re->ehdr.e_machine, 2743 dyn.d_tag)); 2744 /* Dump dynamic entry value. */ 2745 dump_dyn_val(re, &dyn, s->link); 2746 } 2747 } 2748 2749 if (!is_dynamic) 2750 printf("\nThere is no dynamic section in this file.\n"); 2751 } 2752 2753 static char * 2754 timestamp(time_t ti) 2755 { 2756 static char ts[32]; 2757 struct tm *t; 2758 2759 t = gmtime(&ti); 2760 snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d", 2761 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, 2762 t->tm_min, t->tm_sec); 2763 2764 return (ts); 2765 } 2766 2767 static const char * 2768 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val) 2769 { 2770 const char *name; 2771 2772 if (stab == SHN_UNDEF) 2773 name = "ERROR"; 2774 else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) { 2775 (void) elf_errno(); /* clear error */ 2776 name = "ERROR"; 2777 } 2778 2779 return (name); 2780 } 2781 2782 static void 2783 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn) 2784 { 2785 switch (re->ehdr.e_machine) { 2786 case EM_MIPS: 2787 case EM_MIPS_RS3_LE: 2788 switch (dyn->d_tag) { 2789 case DT_MIPS_RLD_VERSION: 2790 case DT_MIPS_LOCAL_GOTNO: 2791 case DT_MIPS_CONFLICTNO: 2792 case DT_MIPS_LIBLISTNO: 2793 case DT_MIPS_SYMTABNO: 2794 case DT_MIPS_UNREFEXTNO: 2795 case DT_MIPS_GOTSYM: 2796 case DT_MIPS_HIPAGENO: 2797 case DT_MIPS_DELTA_CLASS_NO: 2798 case DT_MIPS_DELTA_INSTANCE_NO: 2799 case DT_MIPS_DELTA_RELOC_NO: 2800 case DT_MIPS_DELTA_SYM_NO: 2801 case DT_MIPS_DELTA_CLASSSYM_NO: 2802 case DT_MIPS_LOCALPAGE_GOTIDX: 2803 case DT_MIPS_LOCAL_GOTIDX: 2804 case DT_MIPS_HIDDEN_GOTIDX: 2805 case DT_MIPS_PROTECTED_GOTIDX: 2806 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2807 break; 2808 case DT_MIPS_ICHECKSUM: 2809 case DT_MIPS_FLAGS: 2810 case DT_MIPS_BASE_ADDRESS: 2811 case DT_MIPS_CONFLICT: 2812 case DT_MIPS_LIBLIST: 2813 case DT_MIPS_RLD_MAP: 2814 case DT_MIPS_DELTA_CLASS: 2815 case DT_MIPS_DELTA_INSTANCE: 2816 case DT_MIPS_DELTA_RELOC: 2817 case DT_MIPS_DELTA_SYM: 2818 case DT_MIPS_DELTA_CLASSSYM: 2819 case DT_MIPS_CXX_FLAGS: 2820 case DT_MIPS_PIXIE_INIT: 2821 case DT_MIPS_SYMBOL_LIB: 2822 case DT_MIPS_OPTIONS: 2823 case DT_MIPS_INTERFACE: 2824 case DT_MIPS_DYNSTR_ALIGN: 2825 case DT_MIPS_INTERFACE_SIZE: 2826 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2827 case DT_MIPS_COMPACT_SIZE: 2828 case DT_MIPS_GP_VALUE: 2829 case DT_MIPS_AUX_DYNAMIC: 2830 case DT_MIPS_PLTGOT: 2831 case DT_MIPS_RLD_OBJ_UPDATE: 2832 case DT_MIPS_RWPLT: 2833 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2834 break; 2835 case DT_MIPS_IVERSION: 2836 case DT_MIPS_PERF_SUFFIX: 2837 case DT_MIPS_TIME_STAMP: 2838 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2839 break; 2840 default: 2841 printf("\n"); 2842 break; 2843 } 2844 break; 2845 default: 2846 printf("\n"); 2847 break; 2848 } 2849 } 2850 2851 static void 2852 dump_flags(struct flag_desc *desc, uint64_t val) 2853 { 2854 struct flag_desc *fd; 2855 2856 for (fd = desc; fd->flag != 0; fd++) { 2857 if (val & fd->flag) { 2858 val &= ~fd->flag; 2859 printf(" %s", fd->desc); 2860 } 2861 } 2862 if (val != 0) 2863 printf(" unknown (0x%jx)", (uintmax_t)val); 2864 printf("\n"); 2865 } 2866 2867 static struct flag_desc dt_flags[] = { 2868 { DF_ORIGIN, "ORIGIN" }, 2869 { DF_SYMBOLIC, "SYMBOLIC" }, 2870 { DF_TEXTREL, "TEXTREL" }, 2871 { DF_BIND_NOW, "BIND_NOW" }, 2872 { DF_STATIC_TLS, "STATIC_TLS" }, 2873 { 0, NULL } 2874 }; 2875 2876 static struct flag_desc dt_flags_1[] = { 2877 { DF_1_BIND_NOW, "NOW" }, 2878 { DF_1_GLOBAL, "GLOBAL" }, 2879 { 0x4, "GROUP" }, 2880 { DF_1_NODELETE, "NODELETE" }, 2881 { DF_1_LOADFLTR, "LOADFLTR" }, 2882 { 0x20, "INITFIRST" }, 2883 { DF_1_NOOPEN, "NOOPEN" }, 2884 { DF_1_ORIGIN, "ORIGIN" }, 2885 { 0x100, "DIRECT" }, 2886 { DF_1_INTERPOSE, "INTERPOSE" }, 2887 { DF_1_NODEFLIB, "NODEFLIB" }, 2888 { 0x1000, "NODUMP" }, 2889 { 0x2000, "CONFALT" }, 2890 { 0x4000, "ENDFILTEE" }, 2891 { 0x8000, "DISPRELDNE" }, 2892 { 0x10000, "DISPRELPND" }, 2893 { 0x20000, "NODIRECT" }, 2894 { 0x40000, "IGNMULDEF" }, 2895 { 0x80000, "NOKSYMS" }, 2896 { 0x100000, "NOHDR" }, 2897 { 0x200000, "EDITED" }, 2898 { 0x400000, "NORELOC" }, 2899 { 0x800000, "SYMINTPOSE" }, 2900 { 0x1000000, "GLOBAUDIT" }, 2901 { 0, NULL } 2902 }; 2903 2904 static void 2905 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab) 2906 { 2907 const char *name; 2908 2909 if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC && 2910 dyn->d_tag != DT_AUXILIARY && dyn->d_tag != DT_FILTER) { 2911 dump_arch_dyn_val(re, dyn); 2912 return; 2913 } 2914 2915 /* These entry values are index into the string table. */ 2916 name = NULL; 2917 if (dyn->d_tag == DT_AUXILIARY || dyn->d_tag == DT_FILTER || 2918 dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME || 2919 dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH) 2920 name = dyn_str(re, stab, dyn->d_un.d_val); 2921 2922 switch(dyn->d_tag) { 2923 case DT_NULL: 2924 case DT_PLTGOT: 2925 case DT_HASH: 2926 case DT_STRTAB: 2927 case DT_SYMTAB: 2928 case DT_RELA: 2929 case DT_INIT: 2930 case DT_SYMBOLIC: 2931 case DT_REL: 2932 case DT_DEBUG: 2933 case DT_TEXTREL: 2934 case DT_JMPREL: 2935 case DT_FINI: 2936 case DT_VERDEF: 2937 case DT_VERNEED: 2938 case DT_VERSYM: 2939 case DT_GNU_HASH: 2940 case DT_GNU_LIBLIST: 2941 case DT_GNU_CONFLICT: 2942 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2943 break; 2944 case DT_PLTRELSZ: 2945 case DT_RELASZ: 2946 case DT_RELAENT: 2947 case DT_STRSZ: 2948 case DT_SYMENT: 2949 case DT_RELSZ: 2950 case DT_RELENT: 2951 case DT_PREINIT_ARRAYSZ: 2952 case DT_INIT_ARRAYSZ: 2953 case DT_FINI_ARRAYSZ: 2954 case DT_GNU_CONFLICTSZ: 2955 case DT_GNU_LIBLISTSZ: 2956 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val); 2957 break; 2958 case DT_RELACOUNT: 2959 case DT_RELCOUNT: 2960 case DT_VERDEFNUM: 2961 case DT_VERNEEDNUM: 2962 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2963 break; 2964 case DT_AUXILIARY: 2965 printf(" Auxiliary library: [%s]\n", name); 2966 break; 2967 case DT_FILTER: 2968 printf(" Filter library: [%s]\n", name); 2969 break; 2970 case DT_NEEDED: 2971 printf(" Shared library: [%s]\n", name); 2972 break; 2973 case DT_SONAME: 2974 printf(" Library soname: [%s]\n", name); 2975 break; 2976 case DT_RPATH: 2977 printf(" Library rpath: [%s]\n", name); 2978 break; 2979 case DT_RUNPATH: 2980 printf(" Library runpath: [%s]\n", name); 2981 break; 2982 case DT_PLTREL: 2983 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val)); 2984 break; 2985 case DT_GNU_PRELINKED: 2986 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2987 break; 2988 case DT_FLAGS: 2989 dump_flags(dt_flags, dyn->d_un.d_val); 2990 break; 2991 case DT_FLAGS_1: 2992 dump_flags(dt_flags_1, dyn->d_un.d_val); 2993 break; 2994 default: 2995 printf("\n"); 2996 } 2997 } 2998 2999 static void 3000 dump_rel(struct readelf *re, struct section *s, Elf_Data *d) 3001 { 3002 GElf_Rel r; 3003 const char *symname; 3004 uint64_t symval; 3005 int i, len; 3006 uint32_t type; 3007 uint8_t type2, type3; 3008 3009 if (s->link >= re->shnum) 3010 return; 3011 3012 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name" 3013 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3014 elftc_reloc_type_str(re->ehdr.e_machine, \ 3015 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 3016 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3017 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 3018 (uintmax_t)symval, symname 3019 3020 printf("\nRelocation section (%s):\n", s->name); 3021 if (re->ec == ELFCLASS32) 3022 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR); 3023 else { 3024 if (re->options & RE_WW) 3025 printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR); 3026 else 3027 printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR); 3028 } 3029 assert(d->d_size == s->sz); 3030 if (!get_ent_count(s, &len)) 3031 return; 3032 for (i = 0; i < len; i++) { 3033 if (gelf_getrel(d, i, &r) != &r) { 3034 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 3035 continue; 3036 } 3037 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 3038 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 3039 if (re->ec == ELFCLASS32) { 3040 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 3041 ELF64_R_TYPE(r.r_info)); 3042 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32); 3043 } else { 3044 type = ELF64_R_TYPE(r.r_info); 3045 if (re->ehdr.e_machine == EM_MIPS) { 3046 type2 = (type >> 8) & 0xFF; 3047 type3 = (type >> 16) & 0xFF; 3048 type = type & 0xFF; 3049 } else { 3050 type2 = type3 = 0; 3051 } 3052 if (re->options & RE_WW) 3053 printf("%16.16jx %16.16jx %-24.24s" 3054 " %16.16jx %s\n", REL_CT64); 3055 else 3056 printf("%12.12jx %12.12jx %-19.19s" 3057 " %16.16jx %s\n", REL_CT64); 3058 if (re->ehdr.e_machine == EM_MIPS) { 3059 if (re->options & RE_WW) { 3060 printf("%32s: %s\n", "Type2", 3061 elftc_reloc_type_str(EM_MIPS, 3062 type2)); 3063 printf("%32s: %s\n", "Type3", 3064 elftc_reloc_type_str(EM_MIPS, 3065 type3)); 3066 } else { 3067 printf("%24s: %s\n", "Type2", 3068 elftc_reloc_type_str(EM_MIPS, 3069 type2)); 3070 printf("%24s: %s\n", "Type3", 3071 elftc_reloc_type_str(EM_MIPS, 3072 type3)); 3073 } 3074 } 3075 } 3076 } 3077 3078 #undef REL_HDR 3079 #undef REL_CT 3080 } 3081 3082 static void 3083 dump_rela(struct readelf *re, struct section *s, Elf_Data *d) 3084 { 3085 GElf_Rela r; 3086 const char *symname; 3087 uint64_t symval; 3088 int i, len; 3089 uint32_t type; 3090 uint8_t type2, type3; 3091 3092 if (s->link >= re->shnum) 3093 return; 3094 3095 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \ 3096 "st_name + r_addend" 3097 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3098 elftc_reloc_type_str(re->ehdr.e_machine, \ 3099 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 3100 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3101 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 3102 (uintmax_t)symval, symname 3103 3104 printf("\nRelocation section with addend (%s):\n", s->name); 3105 if (re->ec == ELFCLASS32) 3106 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR); 3107 else { 3108 if (re->options & RE_WW) 3109 printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR); 3110 else 3111 printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR); 3112 } 3113 assert(d->d_size == s->sz); 3114 if (!get_ent_count(s, &len)) 3115 return; 3116 for (i = 0; i < len; i++) { 3117 if (gelf_getrela(d, i, &r) != &r) { 3118 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 3119 continue; 3120 } 3121 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 3122 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 3123 if (re->ec == ELFCLASS32) { 3124 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 3125 ELF64_R_TYPE(r.r_info)); 3126 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32); 3127 printf(" + %x\n", (uint32_t) r.r_addend); 3128 } else { 3129 type = ELF64_R_TYPE(r.r_info); 3130 if (re->ehdr.e_machine == EM_MIPS) { 3131 type2 = (type >> 8) & 0xFF; 3132 type3 = (type >> 16) & 0xFF; 3133 type = type & 0xFF; 3134 } else { 3135 type2 = type3 = 0; 3136 } 3137 if (re->options & RE_WW) 3138 printf("%16.16jx %16.16jx %-24.24s" 3139 " %16.16jx %s", RELA_CT64); 3140 else 3141 printf("%12.12jx %12.12jx %-19.19s" 3142 " %16.16jx %s", RELA_CT64); 3143 printf(" + %jx\n", (uintmax_t) r.r_addend); 3144 if (re->ehdr.e_machine == EM_MIPS) { 3145 if (re->options & RE_WW) { 3146 printf("%32s: %s\n", "Type2", 3147 elftc_reloc_type_str(EM_MIPS, 3148 type2)); 3149 printf("%32s: %s\n", "Type3", 3150 elftc_reloc_type_str(EM_MIPS, 3151 type3)); 3152 } else { 3153 printf("%24s: %s\n", "Type2", 3154 elftc_reloc_type_str(EM_MIPS, 3155 type2)); 3156 printf("%24s: %s\n", "Type3", 3157 elftc_reloc_type_str(EM_MIPS, 3158 type3)); 3159 } 3160 } 3161 } 3162 } 3163 3164 #undef RELA_HDR 3165 #undef RELA_CT 3166 } 3167 3168 static void 3169 dump_reloc(struct readelf *re) 3170 { 3171 struct section *s; 3172 Elf_Data *d; 3173 int i, elferr; 3174 3175 for (i = 0; (size_t)i < re->shnum; i++) { 3176 s = &re->sl[i]; 3177 if (s->type == SHT_REL || s->type == SHT_RELA) { 3178 (void) elf_errno(); 3179 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3180 elferr = elf_errno(); 3181 if (elferr != 0) 3182 warnx("elf_getdata failed: %s", 3183 elf_errmsg(elferr)); 3184 continue; 3185 } 3186 if (s->type == SHT_REL) 3187 dump_rel(re, s, d); 3188 else 3189 dump_rela(re, s, d); 3190 } 3191 } 3192 } 3193 3194 static void 3195 dump_symtab(struct readelf *re, int i) 3196 { 3197 struct section *s; 3198 Elf_Data *d; 3199 GElf_Sym sym; 3200 const char *name; 3201 uint32_t stab; 3202 int elferr, j, len; 3203 uint16_t vs; 3204 3205 s = &re->sl[i]; 3206 if (s->link >= re->shnum) 3207 return; 3208 stab = s->link; 3209 (void) elf_errno(); 3210 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3211 elferr = elf_errno(); 3212 if (elferr != 0) 3213 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3214 return; 3215 } 3216 if (d->d_size <= 0) 3217 return; 3218 if (!get_ent_count(s, &len)) 3219 return; 3220 printf("Symbol table (%s)", s->name); 3221 printf(" contains %d entries:\n", len); 3222 printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type", 3223 "Bind", "Vis", "Ndx", "Name"); 3224 3225 for (j = 0; j < len; j++) { 3226 if (gelf_getsym(d, j, &sym) != &sym) { 3227 warnx("gelf_getsym failed: %s", elf_errmsg(-1)); 3228 continue; 3229 } 3230 printf("%6d:", j); 3231 printf(" %16.16jx", (uintmax_t) sym.st_value); 3232 printf(" %5ju", (uintmax_t) sym.st_size); 3233 printf(" %-7s", st_type(re->ehdr.e_machine, 3234 re->ehdr.e_ident[EI_OSABI], GELF_ST_TYPE(sym.st_info))); 3235 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info))); 3236 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other))); 3237 printf(" %3s", st_shndx(sym.st_shndx)); 3238 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL) 3239 printf(" %s", name); 3240 /* Append symbol version string for SHT_DYNSYM symbol table. */ 3241 if (s->type == SHT_DYNSYM && re->ver != NULL && 3242 re->vs != NULL && re->vs[j] > 1) { 3243 vs = re->vs[j] & VERSYM_VERSION; 3244 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3245 warnx("invalid versym version index %u", vs); 3246 break; 3247 } 3248 if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0) 3249 printf("@%s (%d)", re->ver[vs].name, vs); 3250 else 3251 printf("@@%s (%d)", re->ver[vs].name, vs); 3252 } 3253 putchar('\n'); 3254 } 3255 3256 } 3257 3258 static void 3259 dump_symtabs(struct readelf *re) 3260 { 3261 GElf_Dyn dyn; 3262 Elf_Data *d; 3263 struct section *s; 3264 uint64_t dyn_off; 3265 int elferr, i, len; 3266 3267 /* 3268 * If -D is specified, only dump the symbol table specified by 3269 * the DT_SYMTAB entry in the .dynamic section. 3270 */ 3271 dyn_off = 0; 3272 if (re->options & RE_DD) { 3273 s = NULL; 3274 for (i = 0; (size_t)i < re->shnum; i++) 3275 if (re->sl[i].type == SHT_DYNAMIC) { 3276 s = &re->sl[i]; 3277 break; 3278 } 3279 if (s == NULL) 3280 return; 3281 (void) elf_errno(); 3282 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3283 elferr = elf_errno(); 3284 if (elferr != 0) 3285 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 3286 return; 3287 } 3288 if (d->d_size <= 0) 3289 return; 3290 if (!get_ent_count(s, &len)) 3291 return; 3292 3293 for (i = 0; i < len; i++) { 3294 if (gelf_getdyn(d, i, &dyn) != &dyn) { 3295 warnx("gelf_getdyn failed: %s", elf_errmsg(-1)); 3296 continue; 3297 } 3298 if (dyn.d_tag == DT_SYMTAB) { 3299 dyn_off = dyn.d_un.d_val; 3300 break; 3301 } 3302 } 3303 } 3304 3305 /* Find and dump symbol tables. */ 3306 for (i = 0; (size_t)i < re->shnum; i++) { 3307 s = &re->sl[i]; 3308 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) { 3309 if (re->options & RE_DD) { 3310 if (dyn_off == s->addr) { 3311 dump_symtab(re, i); 3312 break; 3313 } 3314 } else 3315 dump_symtab(re, i); 3316 } 3317 } 3318 } 3319 3320 static void 3321 dump_svr4_hash(struct section *s) 3322 { 3323 Elf_Data *d; 3324 uint32_t *buf; 3325 uint32_t nbucket, nchain; 3326 uint32_t *bucket, *chain; 3327 uint32_t *bl, *c, maxl, total; 3328 int elferr, i, j; 3329 3330 /* Read and parse the content of .hash section. */ 3331 (void) elf_errno(); 3332 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3333 elferr = elf_errno(); 3334 if (elferr != 0) 3335 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3336 return; 3337 } 3338 if (d->d_size < 2 * sizeof(uint32_t)) { 3339 warnx(".hash section too small"); 3340 return; 3341 } 3342 buf = d->d_buf; 3343 nbucket = buf[0]; 3344 nchain = buf[1]; 3345 if (nbucket <= 0 || nchain <= 0) { 3346 warnx("Malformed .hash section"); 3347 return; 3348 } 3349 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3350 warnx("Malformed .hash section"); 3351 return; 3352 } 3353 bucket = &buf[2]; 3354 chain = &buf[2 + nbucket]; 3355 3356 maxl = 0; 3357 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3358 errx(EXIT_FAILURE, "calloc failed"); 3359 for (i = 0; (uint32_t)i < nbucket; i++) 3360 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3361 if (++bl[i] > maxl) 3362 maxl = bl[i]; 3363 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3364 errx(EXIT_FAILURE, "calloc failed"); 3365 for (i = 0; (uint32_t)i < nbucket; i++) 3366 c[bl[i]]++; 3367 printf("\nHistogram for bucket list length (total of %u buckets):\n", 3368 nbucket); 3369 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3370 total = 0; 3371 for (i = 0; (uint32_t)i <= maxl; i++) { 3372 total += c[i] * i; 3373 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3374 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3375 } 3376 free(c); 3377 free(bl); 3378 } 3379 3380 static void 3381 dump_svr4_hash64(struct readelf *re, struct section *s) 3382 { 3383 Elf_Data *d, dst; 3384 uint64_t *buf; 3385 uint64_t nbucket, nchain; 3386 uint64_t *bucket, *chain; 3387 uint64_t *bl, *c, maxl, total; 3388 int elferr, i, j; 3389 3390 /* 3391 * ALPHA uses 64-bit hash entries. Since libelf assumes that 3392 * .hash section contains only 32-bit entry, an explicit 3393 * gelf_xlatetom is needed here. 3394 */ 3395 (void) elf_errno(); 3396 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 3397 elferr = elf_errno(); 3398 if (elferr != 0) 3399 warnx("elf_rawdata failed: %s", 3400 elf_errmsg(elferr)); 3401 return; 3402 } 3403 d->d_type = ELF_T_XWORD; 3404 memcpy(&dst, d, sizeof(Elf_Data)); 3405 if (gelf_xlatetom(re->elf, &dst, d, 3406 re->ehdr.e_ident[EI_DATA]) != &dst) { 3407 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1)); 3408 return; 3409 } 3410 if (dst.d_size < 2 * sizeof(uint64_t)) { 3411 warnx(".hash section too small"); 3412 return; 3413 } 3414 buf = dst.d_buf; 3415 nbucket = buf[0]; 3416 nchain = buf[1]; 3417 if (nbucket <= 0 || nchain <= 0) { 3418 warnx("Malformed .hash section"); 3419 return; 3420 } 3421 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3422 warnx("Malformed .hash section"); 3423 return; 3424 } 3425 bucket = &buf[2]; 3426 chain = &buf[2 + nbucket]; 3427 3428 maxl = 0; 3429 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3430 errx(EXIT_FAILURE, "calloc failed"); 3431 for (i = 0; (uint32_t)i < nbucket; i++) 3432 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3433 if (++bl[i] > maxl) 3434 maxl = bl[i]; 3435 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3436 errx(EXIT_FAILURE, "calloc failed"); 3437 for (i = 0; (uint64_t)i < nbucket; i++) 3438 c[bl[i]]++; 3439 printf("Histogram for bucket list length (total of %ju buckets):\n", 3440 (uintmax_t)nbucket); 3441 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3442 total = 0; 3443 for (i = 0; (uint64_t)i <= maxl; i++) { 3444 total += c[i] * i; 3445 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i], 3446 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3447 } 3448 free(c); 3449 free(bl); 3450 } 3451 3452 static void 3453 dump_gnu_hash(struct readelf *re, struct section *s) 3454 { 3455 struct section *ds; 3456 Elf_Data *d; 3457 uint32_t *buf; 3458 uint32_t *bucket, *chain; 3459 uint32_t nbucket, nchain, symndx, maskwords; 3460 uint32_t *bl, *c, maxl, total; 3461 int elferr, dynsymcount, i, j; 3462 3463 (void) elf_errno(); 3464 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3465 elferr = elf_errno(); 3466 if (elferr != 0) 3467 warnx("elf_getdata failed: %s", 3468 elf_errmsg(elferr)); 3469 return; 3470 } 3471 if (d->d_size < 4 * sizeof(uint32_t)) { 3472 warnx(".gnu.hash section too small"); 3473 return; 3474 } 3475 buf = d->d_buf; 3476 nbucket = buf[0]; 3477 symndx = buf[1]; 3478 maskwords = buf[2]; 3479 buf += 4; 3480 if (s->link >= re->shnum) 3481 return; 3482 ds = &re->sl[s->link]; 3483 if (!get_ent_count(ds, &dynsymcount)) 3484 return; 3485 if (symndx >= (uint32_t)dynsymcount) { 3486 warnx("Malformed .gnu.hash section (symndx out of range)"); 3487 return; 3488 } 3489 nchain = dynsymcount - symndx; 3490 if (d->d_size != 4 * sizeof(uint32_t) + maskwords * 3491 (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) + 3492 (nbucket + nchain) * sizeof(uint32_t)) { 3493 warnx("Malformed .gnu.hash section"); 3494 return; 3495 } 3496 bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2); 3497 chain = bucket + nbucket; 3498 3499 maxl = 0; 3500 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3501 errx(EXIT_FAILURE, "calloc failed"); 3502 for (i = 0; (uint32_t)i < nbucket; i++) 3503 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain; 3504 j++) { 3505 if (++bl[i] > maxl) 3506 maxl = bl[i]; 3507 if (chain[j - symndx] & 1) 3508 break; 3509 } 3510 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3511 errx(EXIT_FAILURE, "calloc failed"); 3512 for (i = 0; (uint32_t)i < nbucket; i++) 3513 c[bl[i]]++; 3514 printf("Histogram for bucket list length (total of %u buckets):\n", 3515 nbucket); 3516 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3517 total = 0; 3518 for (i = 0; (uint32_t)i <= maxl; i++) { 3519 total += c[i] * i; 3520 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3521 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3522 } 3523 free(c); 3524 free(bl); 3525 } 3526 3527 static struct flag_desc gnu_property_x86_feature_1_and_bits[] = { 3528 { GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT" }, 3529 { GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK" }, 3530 { 0, NULL } 3531 }; 3532 3533 static void 3534 dump_gnu_property_type_0(struct readelf *re, const char *buf, size_t sz) 3535 { 3536 size_t i; 3537 uint32_t type, prop_sz; 3538 3539 printf(" Properties: "); 3540 while (sz > 0) { 3541 if (sz < 8) 3542 goto bad; 3543 3544 type = *(const uint32_t *)(const void *)buf; 3545 prop_sz = *(const uint32_t *)(const void *)(buf + 4); 3546 buf += 8; 3547 sz -= 8; 3548 3549 if (prop_sz > sz) 3550 goto bad; 3551 3552 if (type >= GNU_PROPERTY_LOPROC && 3553 type <= GNU_PROPERTY_HIPROC) { 3554 if (re->ehdr.e_machine != EM_X86_64) { 3555 printf("machine type %x unknown\n", 3556 re->ehdr.e_machine); 3557 goto unknown; 3558 } 3559 switch (type) { 3560 case GNU_PROPERTY_X86_FEATURE_1_AND: 3561 printf("x86 features:"); 3562 if (prop_sz != 4) 3563 goto bad; 3564 dump_flags(gnu_property_x86_feature_1_and_bits, 3565 *(const uint32_t *)(const void *)buf); 3566 break; 3567 } 3568 } 3569 3570 buf += roundup2(prop_sz, 8); 3571 sz -= roundup2(prop_sz, 8); 3572 } 3573 return; 3574 bad: 3575 printf("corrupt GNU property\n"); 3576 unknown: 3577 printf("remaining description data:"); 3578 for (i = 0; i < sz; i++) 3579 printf(" %02x", (unsigned char)buf[i]); 3580 printf("\n"); 3581 } 3582 3583 static void 3584 dump_hash(struct readelf *re) 3585 { 3586 struct section *s; 3587 int i; 3588 3589 for (i = 0; (size_t) i < re->shnum; i++) { 3590 s = &re->sl[i]; 3591 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) { 3592 if (s->type == SHT_GNU_HASH) 3593 dump_gnu_hash(re, s); 3594 else if (re->ehdr.e_machine == EM_ALPHA && 3595 s->entsize == 8) 3596 dump_svr4_hash64(re, s); 3597 else 3598 dump_svr4_hash(s); 3599 } 3600 } 3601 } 3602 3603 static void 3604 dump_notes(struct readelf *re) 3605 { 3606 struct section *s; 3607 const char *rawfile; 3608 GElf_Phdr phdr; 3609 Elf_Data *d; 3610 size_t filesize, phnum; 3611 int i, elferr; 3612 3613 if (re->ehdr.e_type == ET_CORE) { 3614 /* 3615 * Search program headers in the core file for 3616 * PT_NOTE entry. 3617 */ 3618 if (elf_getphnum(re->elf, &phnum) == 0) { 3619 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 3620 return; 3621 } 3622 if (phnum == 0) 3623 return; 3624 if ((rawfile = elf_rawfile(re->elf, &filesize)) == NULL) { 3625 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 3626 return; 3627 } 3628 for (i = 0; (size_t) i < phnum; i++) { 3629 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 3630 warnx("gelf_getphdr failed: %s", 3631 elf_errmsg(-1)); 3632 continue; 3633 } 3634 if (phdr.p_type == PT_NOTE) { 3635 if (phdr.p_offset >= filesize || 3636 phdr.p_filesz > filesize - phdr.p_offset) { 3637 warnx("invalid PHDR offset"); 3638 continue; 3639 } 3640 dump_notes_content(re, rawfile + phdr.p_offset, 3641 phdr.p_filesz, phdr.p_offset); 3642 } 3643 } 3644 3645 } else { 3646 /* 3647 * For objects other than core files, Search for 3648 * SHT_NOTE sections. 3649 */ 3650 for (i = 0; (size_t) i < re->shnum; i++) { 3651 s = &re->sl[i]; 3652 if (s->type == SHT_NOTE) { 3653 (void) elf_errno(); 3654 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3655 elferr = elf_errno(); 3656 if (elferr != 0) 3657 warnx("elf_getdata failed: %s", 3658 elf_errmsg(elferr)); 3659 continue; 3660 } 3661 dump_notes_content(re, d->d_buf, d->d_size, 3662 s->off); 3663 } 3664 } 3665 } 3666 } 3667 3668 static struct flag_desc note_feature_ctl_flags[] = { 3669 { NT_FREEBSD_FCTL_ASLR_DISABLE, "ASLR_DISABLE" }, 3670 { 0, NULL } 3671 }; 3672 3673 static void 3674 dump_notes_data(struct readelf *re, const char *name, uint32_t type, 3675 const char *buf, size_t sz) 3676 { 3677 size_t i; 3678 const uint32_t *ubuf; 3679 3680 /* Note data is at least 4-byte aligned. */ 3681 if (((uintptr_t)buf & 3) != 0) { 3682 warnx("bad note data alignment"); 3683 goto unknown; 3684 } 3685 ubuf = (const uint32_t *)(const void *)buf; 3686 3687 if (strcmp(name, "FreeBSD") == 0) { 3688 switch (type) { 3689 case NT_FREEBSD_ABI_TAG: 3690 if (sz != 4) 3691 goto unknown; 3692 printf(" ABI tag: %u\n", ubuf[0]); 3693 return; 3694 /* NT_FREEBSD_NOINIT_TAG carries no data, treat as unknown. */ 3695 case NT_FREEBSD_ARCH_TAG: 3696 if (sz != 4) 3697 goto unknown; 3698 printf(" Arch tag: %x\n", ubuf[0]); 3699 return; 3700 case NT_FREEBSD_FEATURE_CTL: 3701 if (sz != 4) 3702 goto unknown; 3703 printf(" Features:"); 3704 dump_flags(note_feature_ctl_flags, ubuf[0]); 3705 return; 3706 } 3707 } else if (strcmp(name, "GNU") == 0) { 3708 switch (type) { 3709 case NT_GNU_PROPERTY_TYPE_0: 3710 dump_gnu_property_type_0(re, buf, sz); 3711 return; 3712 } 3713 } 3714 unknown: 3715 printf(" description data:"); 3716 for (i = 0; i < sz; i++) 3717 printf(" %02x", (unsigned char)buf[i]); 3718 printf("\n"); 3719 } 3720 3721 static void 3722 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off) 3723 { 3724 Elf_Note *note; 3725 const char *end, *name; 3726 3727 printf("\nNotes at offset %#010jx with length %#010jx:\n", 3728 (uintmax_t) off, (uintmax_t) sz); 3729 printf(" %-13s %-15s %s\n", "Owner", "Data size", "Description"); 3730 end = buf + sz; 3731 while (buf < end) { 3732 if (buf + sizeof(*note) > end) { 3733 warnx("invalid note header"); 3734 return; 3735 } 3736 note = (Elf_Note *)(uintptr_t) buf; 3737 buf += sizeof(Elf_Note); 3738 name = buf; 3739 buf += roundup2(note->n_namesz, 4); 3740 /* 3741 * The name field is required to be nul-terminated, and 3742 * n_namesz includes the terminating nul in observed 3743 * implementations (contrary to the ELF-64 spec). A special 3744 * case is needed for cores generated by some older Linux 3745 * versions, which write a note named "CORE" without a nul 3746 * terminator and n_namesz = 4. 3747 */ 3748 if (note->n_namesz == 0) 3749 name = ""; 3750 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0) 3751 name = "CORE"; 3752 else if (strnlen(name, note->n_namesz) >= note->n_namesz) 3753 name = "<invalid>"; 3754 printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz); 3755 printf(" %s\n", note_type(name, re->ehdr.e_type, 3756 note->n_type)); 3757 dump_notes_data(re, name, note->n_type, buf, note->n_descsz); 3758 buf += roundup2(note->n_descsz, 4); 3759 } 3760 } 3761 3762 /* 3763 * Symbol versioning sections are the same for 32bit and 64bit 3764 * ELF objects. 3765 */ 3766 #define Elf_Verdef Elf32_Verdef 3767 #define Elf_Verdaux Elf32_Verdaux 3768 #define Elf_Verneed Elf32_Verneed 3769 #define Elf_Vernaux Elf32_Vernaux 3770 3771 #define SAVE_VERSION_NAME(x, n, t) \ 3772 do { \ 3773 while (x >= re->ver_sz) { \ 3774 nv = realloc(re->ver, \ 3775 sizeof(*re->ver) * re->ver_sz * 2); \ 3776 if (nv == NULL) { \ 3777 warn("realloc failed"); \ 3778 free(re->ver); \ 3779 return; \ 3780 } \ 3781 re->ver = nv; \ 3782 for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \ 3783 re->ver[i].name = NULL; \ 3784 re->ver[i].type = 0; \ 3785 } \ 3786 re->ver_sz *= 2; \ 3787 } \ 3788 if (x > 1) { \ 3789 re->ver[x].name = n; \ 3790 re->ver[x].type = t; \ 3791 } \ 3792 } while (0) 3793 3794 3795 static void 3796 dump_verdef(struct readelf *re, int dump) 3797 { 3798 struct section *s; 3799 struct symver *nv; 3800 Elf_Data *d; 3801 Elf_Verdef *vd; 3802 Elf_Verdaux *vda; 3803 uint8_t *buf, *end, *buf2; 3804 const char *name; 3805 int elferr, i, j; 3806 3807 if ((s = re->vd_s) == NULL) 3808 return; 3809 if (s->link >= re->shnum) 3810 return; 3811 3812 if (re->ver == NULL) { 3813 re->ver_sz = 16; 3814 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3815 NULL) { 3816 warn("calloc failed"); 3817 return; 3818 } 3819 re->ver[0].name = "*local*"; 3820 re->ver[1].name = "*global*"; 3821 } 3822 3823 if (dump) 3824 printf("\nVersion definition section (%s):\n", s->name); 3825 (void) elf_errno(); 3826 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3827 elferr = elf_errno(); 3828 if (elferr != 0) 3829 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3830 return; 3831 } 3832 if (d->d_size == 0) 3833 return; 3834 3835 buf = d->d_buf; 3836 end = buf + d->d_size; 3837 while (buf + sizeof(Elf_Verdef) <= end) { 3838 vd = (Elf_Verdef *) (uintptr_t) buf; 3839 if (dump) { 3840 printf(" 0x%4.4lx", (unsigned long) 3841 (buf - (uint8_t *)d->d_buf)); 3842 printf(" vd_version: %u vd_flags: %d" 3843 " vd_ndx: %u vd_cnt: %u", vd->vd_version, 3844 vd->vd_flags, vd->vd_ndx, vd->vd_cnt); 3845 } 3846 buf2 = buf + vd->vd_aux; 3847 j = 0; 3848 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) { 3849 vda = (Elf_Verdaux *) (uintptr_t) buf2; 3850 name = get_string(re, s->link, vda->vda_name); 3851 if (j == 0) { 3852 if (dump) 3853 printf(" vda_name: %s\n", name); 3854 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1); 3855 } else if (dump) 3856 printf(" 0x%4.4lx parent: %s\n", 3857 (unsigned long) (buf2 - 3858 (uint8_t *)d->d_buf), name); 3859 if (vda->vda_next == 0) 3860 break; 3861 buf2 += vda->vda_next; 3862 j++; 3863 } 3864 if (vd->vd_next == 0) 3865 break; 3866 buf += vd->vd_next; 3867 } 3868 } 3869 3870 static void 3871 dump_verneed(struct readelf *re, int dump) 3872 { 3873 struct section *s; 3874 struct symver *nv; 3875 Elf_Data *d; 3876 Elf_Verneed *vn; 3877 Elf_Vernaux *vna; 3878 uint8_t *buf, *end, *buf2; 3879 const char *name; 3880 int elferr, i, j; 3881 3882 if ((s = re->vn_s) == NULL) 3883 return; 3884 if (s->link >= re->shnum) 3885 return; 3886 3887 if (re->ver == NULL) { 3888 re->ver_sz = 16; 3889 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3890 NULL) { 3891 warn("calloc failed"); 3892 return; 3893 } 3894 re->ver[0].name = "*local*"; 3895 re->ver[1].name = "*global*"; 3896 } 3897 3898 if (dump) 3899 printf("\nVersion needed section (%s):\n", s->name); 3900 (void) elf_errno(); 3901 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3902 elferr = elf_errno(); 3903 if (elferr != 0) 3904 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3905 return; 3906 } 3907 if (d->d_size == 0) 3908 return; 3909 3910 buf = d->d_buf; 3911 end = buf + d->d_size; 3912 while (buf + sizeof(Elf_Verneed) <= end) { 3913 vn = (Elf_Verneed *) (uintptr_t) buf; 3914 if (dump) { 3915 printf(" 0x%4.4lx", (unsigned long) 3916 (buf - (uint8_t *)d->d_buf)); 3917 printf(" vn_version: %u vn_file: %s vn_cnt: %u\n", 3918 vn->vn_version, 3919 get_string(re, s->link, vn->vn_file), 3920 vn->vn_cnt); 3921 } 3922 buf2 = buf + vn->vn_aux; 3923 j = 0; 3924 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) { 3925 vna = (Elf32_Vernaux *) (uintptr_t) buf2; 3926 if (dump) 3927 printf(" 0x%4.4lx", (unsigned long) 3928 (buf2 - (uint8_t *)d->d_buf)); 3929 name = get_string(re, s->link, vna->vna_name); 3930 if (dump) 3931 printf(" vna_name: %s vna_flags: %u" 3932 " vna_other: %u\n", name, 3933 vna->vna_flags, vna->vna_other); 3934 SAVE_VERSION_NAME((int)vna->vna_other, name, 0); 3935 if (vna->vna_next == 0) 3936 break; 3937 buf2 += vna->vna_next; 3938 j++; 3939 } 3940 if (vn->vn_next == 0) 3941 break; 3942 buf += vn->vn_next; 3943 } 3944 } 3945 3946 static void 3947 dump_versym(struct readelf *re) 3948 { 3949 int i; 3950 uint16_t vs; 3951 3952 if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL) 3953 return; 3954 printf("\nVersion symbol section (%s):\n", re->vs_s->name); 3955 for (i = 0; i < re->vs_sz; i++) { 3956 if ((i & 3) == 0) { 3957 if (i > 0) 3958 putchar('\n'); 3959 printf(" %03x:", i); 3960 } 3961 vs = re->vs[i] & VERSYM_VERSION; 3962 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3963 warnx("invalid versym version index %u", re->vs[i]); 3964 break; 3965 } 3966 if (re->vs[i] & VERSYM_HIDDEN) 3967 printf(" %3xh %-12s ", vs, 3968 re->ver[re->vs[i] & VERSYM_VERSION].name); 3969 else 3970 printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name); 3971 } 3972 putchar('\n'); 3973 } 3974 3975 static void 3976 dump_ver(struct readelf *re) 3977 { 3978 3979 if (re->vs_s && re->ver && re->vs) 3980 dump_versym(re); 3981 if (re->vd_s) 3982 dump_verdef(re, 1); 3983 if (re->vn_s) 3984 dump_verneed(re, 1); 3985 } 3986 3987 static void 3988 search_ver(struct readelf *re) 3989 { 3990 struct section *s; 3991 Elf_Data *d; 3992 int elferr, i; 3993 3994 for (i = 0; (size_t) i < re->shnum; i++) { 3995 s = &re->sl[i]; 3996 if (s->type == SHT_SUNW_versym) 3997 re->vs_s = s; 3998 if (s->type == SHT_SUNW_verneed) 3999 re->vn_s = s; 4000 if (s->type == SHT_SUNW_verdef) 4001 re->vd_s = s; 4002 } 4003 if (re->vd_s) 4004 dump_verdef(re, 0); 4005 if (re->vn_s) 4006 dump_verneed(re, 0); 4007 if (re->vs_s && re->ver != NULL) { 4008 (void) elf_errno(); 4009 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) { 4010 elferr = elf_errno(); 4011 if (elferr != 0) 4012 warnx("elf_getdata failed: %s", 4013 elf_errmsg(elferr)); 4014 return; 4015 } 4016 if (d->d_size == 0) 4017 return; 4018 re->vs = d->d_buf; 4019 re->vs_sz = d->d_size / sizeof(Elf32_Half); 4020 } 4021 } 4022 4023 #undef Elf_Verdef 4024 #undef Elf_Verdaux 4025 #undef Elf_Verneed 4026 #undef Elf_Vernaux 4027 #undef SAVE_VERSION_NAME 4028 4029 /* 4030 * Elf32_Lib and Elf64_Lib are identical. 4031 */ 4032 #define Elf_Lib Elf32_Lib 4033 4034 static void 4035 dump_liblist(struct readelf *re) 4036 { 4037 struct section *s; 4038 struct tm *t; 4039 time_t ti; 4040 char tbuf[20]; 4041 Elf_Data *d; 4042 Elf_Lib *lib; 4043 int i, j, k, elferr, first, len; 4044 4045 for (i = 0; (size_t) i < re->shnum; i++) { 4046 s = &re->sl[i]; 4047 if (s->type != SHT_GNU_LIBLIST) 4048 continue; 4049 if (s->link >= re->shnum) 4050 continue; 4051 (void) elf_errno(); 4052 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4053 elferr = elf_errno(); 4054 if (elferr != 0) 4055 warnx("elf_getdata failed: %s", 4056 elf_errmsg(elferr)); 4057 continue; 4058 } 4059 if (d->d_size <= 0) 4060 continue; 4061 lib = d->d_buf; 4062 if (!get_ent_count(s, &len)) 4063 continue; 4064 printf("\nLibrary list section '%s' ", s->name); 4065 printf("contains %d entries:\n", len); 4066 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp", 4067 "Checksum", "Version", "Flags"); 4068 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) { 4069 printf("%3d: ", j); 4070 printf("%-20.20s ", 4071 get_string(re, s->link, lib->l_name)); 4072 ti = lib->l_time_stamp; 4073 t = gmtime(&ti); 4074 snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d" 4075 ":%2d", t->tm_year + 1900, t->tm_mon + 1, 4076 t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec); 4077 printf("%-19.19s ", tbuf); 4078 printf("0x%08x ", lib->l_checksum); 4079 printf("%-7d %#x", lib->l_version, lib->l_flags); 4080 if (lib->l_flags != 0) { 4081 first = 1; 4082 putchar('('); 4083 for (k = 0; l_flag[k].name != NULL; k++) { 4084 if ((l_flag[k].value & lib->l_flags) == 4085 0) 4086 continue; 4087 if (!first) 4088 putchar(','); 4089 else 4090 first = 0; 4091 printf("%s", l_flag[k].name); 4092 } 4093 putchar(')'); 4094 } 4095 putchar('\n'); 4096 lib++; 4097 } 4098 } 4099 } 4100 4101 #undef Elf_Lib 4102 4103 static void 4104 dump_section_groups(struct readelf *re) 4105 { 4106 struct section *s; 4107 const char *symname; 4108 Elf_Data *d; 4109 uint32_t *w; 4110 int i, j, elferr; 4111 size_t n; 4112 4113 for (i = 0; (size_t) i < re->shnum; i++) { 4114 s = &re->sl[i]; 4115 if (s->type != SHT_GROUP) 4116 continue; 4117 if (s->link >= re->shnum) 4118 continue; 4119 (void) elf_errno(); 4120 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4121 elferr = elf_errno(); 4122 if (elferr != 0) 4123 warnx("elf_getdata failed: %s", 4124 elf_errmsg(elferr)); 4125 continue; 4126 } 4127 if (d->d_size <= 0) 4128 continue; 4129 4130 w = d->d_buf; 4131 4132 /* We only support COMDAT section. */ 4133 #ifndef GRP_COMDAT 4134 #define GRP_COMDAT 0x1 4135 #endif 4136 if ((*w++ & GRP_COMDAT) == 0) 4137 return; 4138 4139 if (s->entsize == 0) 4140 s->entsize = 4; 4141 4142 symname = get_symbol_name(re, s->link, s->info); 4143 n = s->sz / s->entsize; 4144 if (n-- < 1) 4145 return; 4146 4147 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju" 4148 " sections:\n", i, s->name, symname, (uintmax_t)n); 4149 printf(" %-10.10s %s\n", "[Index]", "Name"); 4150 for (j = 0; (size_t) j < n; j++, w++) { 4151 if (*w >= re->shnum) { 4152 warnx("invalid section index: %u", *w); 4153 continue; 4154 } 4155 printf(" [%5u] %s\n", *w, re->sl[*w].name); 4156 } 4157 } 4158 } 4159 4160 static uint8_t * 4161 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe) 4162 { 4163 uint64_t val; 4164 4165 /* 4166 * According to ARM EABI: For tags > 32, even numbered tags have 4167 * a ULEB128 param and odd numbered ones have NUL-terminated 4168 * string param. This rule probably also applies for tags <= 32 4169 * if the object arch is not ARM. 4170 */ 4171 4172 printf(" Tag_unknown_%ju: ", (uintmax_t) tag); 4173 4174 if (tag & 1) { 4175 printf("%s\n", (char *) p); 4176 p += strlen((char *) p) + 1; 4177 } else { 4178 val = _decode_uleb128(&p, pe); 4179 printf("%ju\n", (uintmax_t) val); 4180 } 4181 4182 return (p); 4183 } 4184 4185 static uint8_t * 4186 dump_compatibility_tag(uint8_t *p, uint8_t *pe) 4187 { 4188 uint64_t val; 4189 4190 val = _decode_uleb128(&p, pe); 4191 printf("flag = %ju, vendor = %s\n", (uintmax_t) val, p); 4192 p += strlen((char *) p) + 1; 4193 4194 return (p); 4195 } 4196 4197 static void 4198 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4199 { 4200 uint64_t tag, val; 4201 size_t i; 4202 int found, desc; 4203 4204 (void) re; 4205 4206 while (p < pe) { 4207 tag = _decode_uleb128(&p, pe); 4208 found = desc = 0; 4209 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]); 4210 i++) { 4211 if (tag == aeabi_tags[i].tag) { 4212 found = 1; 4213 printf(" %s: ", aeabi_tags[i].s_tag); 4214 if (aeabi_tags[i].get_desc) { 4215 desc = 1; 4216 val = _decode_uleb128(&p, pe); 4217 printf("%s\n", 4218 aeabi_tags[i].get_desc(val)); 4219 } 4220 break; 4221 } 4222 if (tag < aeabi_tags[i].tag) 4223 break; 4224 } 4225 if (!found) { 4226 p = dump_unknown_tag(tag, p, pe); 4227 continue; 4228 } 4229 if (desc) 4230 continue; 4231 4232 switch (tag) { 4233 case 4: /* Tag_CPU_raw_name */ 4234 case 5: /* Tag_CPU_name */ 4235 case 67: /* Tag_conformance */ 4236 printf("%s\n", (char *) p); 4237 p += strlen((char *) p) + 1; 4238 break; 4239 case 32: /* Tag_compatibility */ 4240 p = dump_compatibility_tag(p, pe); 4241 break; 4242 case 64: /* Tag_nodefaults */ 4243 /* ignored, written as 0. */ 4244 (void) _decode_uleb128(&p, pe); 4245 printf("True\n"); 4246 break; 4247 case 65: /* Tag_also_compatible_with */ 4248 val = _decode_uleb128(&p, pe); 4249 /* Must be Tag_CPU_arch */ 4250 if (val != 6) { 4251 printf("unknown\n"); 4252 break; 4253 } 4254 val = _decode_uleb128(&p, pe); 4255 printf("%s\n", aeabi_cpu_arch(val)); 4256 /* Skip NUL terminator. */ 4257 p++; 4258 break; 4259 default: 4260 putchar('\n'); 4261 break; 4262 } 4263 } 4264 } 4265 4266 #ifndef Tag_GNU_MIPS_ABI_FP 4267 #define Tag_GNU_MIPS_ABI_FP 4 4268 #endif 4269 4270 static void 4271 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4272 { 4273 uint64_t tag, val; 4274 4275 (void) re; 4276 4277 while (p < pe) { 4278 tag = _decode_uleb128(&p, pe); 4279 switch (tag) { 4280 case Tag_GNU_MIPS_ABI_FP: 4281 val = _decode_uleb128(&p, pe); 4282 printf(" Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val)); 4283 break; 4284 case 32: /* Tag_compatibility */ 4285 p = dump_compatibility_tag(p, pe); 4286 break; 4287 default: 4288 p = dump_unknown_tag(tag, p, pe); 4289 break; 4290 } 4291 } 4292 } 4293 4294 #ifndef Tag_GNU_Power_ABI_FP 4295 #define Tag_GNU_Power_ABI_FP 4 4296 #endif 4297 4298 #ifndef Tag_GNU_Power_ABI_Vector 4299 #define Tag_GNU_Power_ABI_Vector 8 4300 #endif 4301 4302 static void 4303 dump_ppc_attributes(uint8_t *p, uint8_t *pe) 4304 { 4305 uint64_t tag, val; 4306 4307 while (p < pe) { 4308 tag = _decode_uleb128(&p, pe); 4309 switch (tag) { 4310 case Tag_GNU_Power_ABI_FP: 4311 val = _decode_uleb128(&p, pe); 4312 printf(" Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val)); 4313 break; 4314 case Tag_GNU_Power_ABI_Vector: 4315 val = _decode_uleb128(&p, pe); 4316 printf(" Tag_GNU_Power_ABI_Vector: %s\n", 4317 ppc_abi_vector(val)); 4318 break; 4319 case 32: /* Tag_compatibility */ 4320 p = dump_compatibility_tag(p, pe); 4321 break; 4322 default: 4323 p = dump_unknown_tag(tag, p, pe); 4324 break; 4325 } 4326 } 4327 } 4328 4329 static void 4330 dump_attributes(struct readelf *re) 4331 { 4332 struct section *s; 4333 Elf_Data *d; 4334 uint8_t *p, *pe, *sp; 4335 size_t len, seclen, nlen, sublen; 4336 uint64_t val; 4337 int tag, i, elferr; 4338 4339 for (i = 0; (size_t) i < re->shnum; i++) { 4340 s = &re->sl[i]; 4341 if (s->type != SHT_GNU_ATTRIBUTES && 4342 (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3)) 4343 continue; 4344 (void) elf_errno(); 4345 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4346 elferr = elf_errno(); 4347 if (elferr != 0) 4348 warnx("elf_rawdata failed: %s", 4349 elf_errmsg(elferr)); 4350 continue; 4351 } 4352 if (d->d_size <= 0) 4353 continue; 4354 p = d->d_buf; 4355 pe = p + d->d_size; 4356 if (*p != 'A') { 4357 printf("Unknown Attribute Section Format: %c\n", 4358 (char) *p); 4359 continue; 4360 } 4361 len = d->d_size - 1; 4362 p++; 4363 while (len > 0) { 4364 if (len < 4) { 4365 warnx("truncated attribute section length"); 4366 return; 4367 } 4368 seclen = re->dw_decode(&p, 4); 4369 if (seclen > len) { 4370 warnx("invalid attribute section length"); 4371 return; 4372 } 4373 len -= seclen; 4374 nlen = strlen((char *) p) + 1; 4375 if (nlen + 4 > seclen) { 4376 warnx("invalid attribute section name"); 4377 return; 4378 } 4379 printf("Attribute Section: %s\n", (char *) p); 4380 p += nlen; 4381 seclen -= nlen + 4; 4382 while (seclen > 0) { 4383 sp = p; 4384 tag = *p++; 4385 sublen = re->dw_decode(&p, 4); 4386 if (sublen > seclen) { 4387 warnx("invalid attribute sub-section" 4388 " length"); 4389 return; 4390 } 4391 seclen -= sublen; 4392 printf("%s", top_tag(tag)); 4393 if (tag == 2 || tag == 3) { 4394 putchar(':'); 4395 for (;;) { 4396 val = _decode_uleb128(&p, pe); 4397 if (val == 0) 4398 break; 4399 printf(" %ju", (uintmax_t) val); 4400 } 4401 } 4402 putchar('\n'); 4403 if (re->ehdr.e_machine == EM_ARM && 4404 s->type == SHT_LOPROC + 3) 4405 dump_arm_attributes(re, p, sp + sublen); 4406 else if (re->ehdr.e_machine == EM_MIPS || 4407 re->ehdr.e_machine == EM_MIPS_RS3_LE) 4408 dump_mips_attributes(re, p, 4409 sp + sublen); 4410 else if (re->ehdr.e_machine == EM_PPC) 4411 dump_ppc_attributes(p, sp + sublen); 4412 p = sp + sublen; 4413 } 4414 } 4415 } 4416 } 4417 4418 static void 4419 dump_mips_specific_info(struct readelf *re) 4420 { 4421 struct section *s; 4422 int i; 4423 4424 s = NULL; 4425 for (i = 0; (size_t) i < re->shnum; i++) { 4426 s = &re->sl[i]; 4427 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") || 4428 (s->type == SHT_MIPS_OPTIONS))) { 4429 dump_mips_options(re, s); 4430 } 4431 } 4432 4433 if (s->name != NULL && (!strcmp(s->name, ".MIPS.abiflags") || 4434 (s->type == SHT_MIPS_ABIFLAGS))) 4435 dump_mips_abiflags(re, s); 4436 4437 /* 4438 * Dump .reginfo if present (although it will be ignored by an OS if a 4439 * .MIPS.options section is present, according to SGI mips64 spec). 4440 */ 4441 for (i = 0; (size_t) i < re->shnum; i++) { 4442 s = &re->sl[i]; 4443 if (s->name != NULL && (!strcmp(s->name, ".reginfo") || 4444 (s->type == SHT_MIPS_REGINFO))) 4445 dump_mips_reginfo(re, s); 4446 } 4447 } 4448 4449 static void 4450 dump_mips_abiflags(struct readelf *re, struct section *s) 4451 { 4452 Elf_Data *d; 4453 uint8_t *p; 4454 int elferr; 4455 uint32_t isa_ext, ases, flags1, flags2; 4456 uint16_t version; 4457 uint8_t isa_level, isa_rev, gpr_size, cpr1_size, cpr2_size, fp_abi; 4458 4459 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4460 elferr = elf_errno(); 4461 if (elferr != 0) 4462 warnx("elf_rawdata failed: %s", 4463 elf_errmsg(elferr)); 4464 return; 4465 } 4466 if (d->d_size != 24) { 4467 warnx("invalid MIPS abiflags section size"); 4468 return; 4469 } 4470 4471 p = d->d_buf; 4472 version = re->dw_decode(&p, 2); 4473 printf("MIPS ABI Flags Version: %u", version); 4474 if (version != 0) { 4475 printf(" (unknown)\n\n"); 4476 return; 4477 } 4478 printf("\n\n"); 4479 4480 isa_level = re->dw_decode(&p, 1); 4481 isa_rev = re->dw_decode(&p, 1); 4482 gpr_size = re->dw_decode(&p, 1); 4483 cpr1_size = re->dw_decode(&p, 1); 4484 cpr2_size = re->dw_decode(&p, 1); 4485 fp_abi = re->dw_decode(&p, 1); 4486 isa_ext = re->dw_decode(&p, 4); 4487 ases = re->dw_decode(&p, 4); 4488 flags1 = re->dw_decode(&p, 4); 4489 flags2 = re->dw_decode(&p, 4); 4490 4491 printf("ISA: "); 4492 if (isa_rev <= 1) 4493 printf("MIPS%u\n", isa_level); 4494 else 4495 printf("MIPS%ur%u\n", isa_level, isa_rev); 4496 printf("GPR size: %d\n", get_mips_register_size(gpr_size)); 4497 printf("CPR1 size: %d\n", get_mips_register_size(cpr1_size)); 4498 printf("CPR2 size: %d\n", get_mips_register_size(cpr2_size)); 4499 printf("FP ABI: "); 4500 switch (fp_abi) { 4501 case 3: 4502 printf("Soft float"); 4503 break; 4504 default: 4505 printf("%u", fp_abi); 4506 break; 4507 } 4508 printf("\nISA Extension: %u\n", isa_ext); 4509 printf("ASEs: %u\n", ases); 4510 printf("FLAGS 1: %08x\n", flags1); 4511 printf("FLAGS 2: %08x\n", flags2); 4512 } 4513 4514 static int 4515 get_mips_register_size(uint8_t flag) 4516 { 4517 switch (flag) { 4518 case 0: return 0; 4519 case 1: return 32; 4520 case 2: return 64; 4521 case 3: return 128; 4522 default: return -1; 4523 } 4524 } 4525 static void 4526 dump_mips_reginfo(struct readelf *re, struct section *s) 4527 { 4528 Elf_Data *d; 4529 int elferr, len; 4530 4531 (void) elf_errno(); 4532 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4533 elferr = elf_errno(); 4534 if (elferr != 0) 4535 warnx("elf_rawdata failed: %s", 4536 elf_errmsg(elferr)); 4537 return; 4538 } 4539 if (d->d_size <= 0) 4540 return; 4541 if (!get_ent_count(s, &len)) 4542 return; 4543 4544 printf("\nSection '%s' contains %d entries:\n", s->name, len); 4545 dump_mips_odk_reginfo(re, d->d_buf, d->d_size); 4546 } 4547 4548 static void 4549 dump_mips_options(struct readelf *re, struct section *s) 4550 { 4551 Elf_Data *d; 4552 uint32_t info; 4553 uint16_t sndx; 4554 uint8_t *p, *pe; 4555 uint8_t kind, size; 4556 int elferr; 4557 4558 (void) elf_errno(); 4559 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4560 elferr = elf_errno(); 4561 if (elferr != 0) 4562 warnx("elf_rawdata failed: %s", 4563 elf_errmsg(elferr)); 4564 return; 4565 } 4566 if (d->d_size == 0) 4567 return; 4568 4569 printf("\nSection %s contains:\n", s->name); 4570 p = d->d_buf; 4571 pe = p + d->d_size; 4572 while (p < pe) { 4573 if (pe - p < 8) { 4574 warnx("Truncated MIPS option header"); 4575 return; 4576 } 4577 kind = re->dw_decode(&p, 1); 4578 size = re->dw_decode(&p, 1); 4579 sndx = re->dw_decode(&p, 2); 4580 info = re->dw_decode(&p, 4); 4581 if (size < 8 || size - 8 > pe - p) { 4582 warnx("Malformed MIPS option header"); 4583 return; 4584 } 4585 size -= 8; 4586 switch (kind) { 4587 case ODK_REGINFO: 4588 dump_mips_odk_reginfo(re, p, size); 4589 break; 4590 case ODK_EXCEPTIONS: 4591 printf(" EXCEPTIONS FPU_MIN: %#x\n", 4592 info & OEX_FPU_MIN); 4593 printf("%11.11s FPU_MAX: %#x\n", "", 4594 info & OEX_FPU_MAX); 4595 dump_mips_option_flags("", mips_exceptions_option, 4596 info); 4597 break; 4598 case ODK_PAD: 4599 printf(" %-10.10s section: %ju\n", "OPAD", 4600 (uintmax_t) sndx); 4601 dump_mips_option_flags("", mips_pad_option, info); 4602 break; 4603 case ODK_HWPATCH: 4604 dump_mips_option_flags("HWPATCH", mips_hwpatch_option, 4605 info); 4606 break; 4607 case ODK_HWAND: 4608 dump_mips_option_flags("HWAND", mips_hwa_option, info); 4609 break; 4610 case ODK_HWOR: 4611 dump_mips_option_flags("HWOR", mips_hwo_option, info); 4612 break; 4613 case ODK_FILL: 4614 printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info); 4615 break; 4616 case ODK_TAGS: 4617 printf(" %-10.10s\n", "TAGS"); 4618 break; 4619 case ODK_GP_GROUP: 4620 printf(" %-10.10s GP group number: %#x\n", "GP_GROUP", 4621 info & 0xFFFF); 4622 if (info & 0x10000) 4623 printf(" %-10.10s GP group is " 4624 "self-contained\n", ""); 4625 break; 4626 case ODK_IDENT: 4627 printf(" %-10.10s default GP group number: %#x\n", 4628 "IDENT", info & 0xFFFF); 4629 if (info & 0x10000) 4630 printf(" %-10.10s default GP group is " 4631 "self-contained\n", ""); 4632 break; 4633 case ODK_PAGESIZE: 4634 printf(" %-10.10s\n", "PAGESIZE"); 4635 break; 4636 default: 4637 break; 4638 } 4639 p += size; 4640 } 4641 } 4642 4643 static void 4644 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info) 4645 { 4646 int first; 4647 4648 first = 1; 4649 for (; opt->desc != NULL; opt++) { 4650 if (info & opt->flag) { 4651 printf(" %-10.10s %s\n", first ? name : "", 4652 opt->desc); 4653 first = 0; 4654 } 4655 } 4656 } 4657 4658 static void 4659 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz) 4660 { 4661 uint32_t ri_gprmask; 4662 uint32_t ri_cprmask[4]; 4663 uint64_t ri_gp_value; 4664 uint8_t *pe; 4665 int i; 4666 4667 pe = p + sz; 4668 while (p < pe) { 4669 ri_gprmask = re->dw_decode(&p, 4); 4670 /* Skip ri_pad padding field for mips64. */ 4671 if (re->ec == ELFCLASS64) 4672 re->dw_decode(&p, 4); 4673 for (i = 0; i < 4; i++) 4674 ri_cprmask[i] = re->dw_decode(&p, 4); 4675 if (re->ec == ELFCLASS32) 4676 ri_gp_value = re->dw_decode(&p, 4); 4677 else 4678 ri_gp_value = re->dw_decode(&p, 8); 4679 printf(" %s ", option_kind(ODK_REGINFO)); 4680 printf("ri_gprmask: 0x%08jx\n", (uintmax_t) ri_gprmask); 4681 for (i = 0; i < 4; i++) 4682 printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i, 4683 (uintmax_t) ri_cprmask[i]); 4684 printf("%12.12s", ""); 4685 printf("ri_gp_value: %#jx\n", (uintmax_t) ri_gp_value); 4686 } 4687 } 4688 4689 static void 4690 dump_arch_specific_info(struct readelf *re) 4691 { 4692 4693 dump_liblist(re); 4694 dump_attributes(re); 4695 4696 switch (re->ehdr.e_machine) { 4697 case EM_MIPS: 4698 case EM_MIPS_RS3_LE: 4699 dump_mips_specific_info(re); 4700 default: 4701 break; 4702 } 4703 } 4704 4705 static const char * 4706 dwarf_regname(struct readelf *re, unsigned int num) 4707 { 4708 static char rx[32]; 4709 const char *rn; 4710 4711 if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL) 4712 return (rn); 4713 4714 snprintf(rx, sizeof(rx), "r%u", num); 4715 4716 return (rx); 4717 } 4718 4719 static void 4720 dump_dwarf_line(struct readelf *re) 4721 { 4722 struct section *s; 4723 Dwarf_Die die; 4724 Dwarf_Error de; 4725 Dwarf_Half tag, version, pointer_size; 4726 Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize; 4727 Dwarf_Small minlen, defstmt, lrange, opbase, oplen; 4728 Elf_Data *d; 4729 char *pn; 4730 uint64_t address, file, line, column, isa, opsize, udelta; 4731 int64_t sdelta; 4732 uint8_t *p, *pe; 4733 int8_t lbase; 4734 int i, is_stmt, dwarf_size, elferr, ret; 4735 4736 printf("\nDump of debug contents of section .debug_line:\n"); 4737 4738 s = NULL; 4739 for (i = 0; (size_t) i < re->shnum; i++) { 4740 s = &re->sl[i]; 4741 if (s->name != NULL && !strcmp(s->name, ".debug_line")) 4742 break; 4743 } 4744 if ((size_t) i >= re->shnum) 4745 return; 4746 4747 (void) elf_errno(); 4748 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4749 elferr = elf_errno(); 4750 if (elferr != 0) 4751 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 4752 return; 4753 } 4754 if (d->d_size <= 0) 4755 return; 4756 4757 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4758 NULL, &de)) == DW_DLV_OK) { 4759 die = NULL; 4760 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) { 4761 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4762 warnx("dwarf_tag failed: %s", 4763 dwarf_errmsg(de)); 4764 return; 4765 } 4766 /* XXX: What about DW_TAG_partial_unit? */ 4767 if (tag == DW_TAG_compile_unit) 4768 break; 4769 } 4770 if (die == NULL) { 4771 warnx("could not find DW_TAG_compile_unit die"); 4772 return; 4773 } 4774 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset, 4775 &de) != DW_DLV_OK) 4776 continue; 4777 4778 length = re->dw_read(d, &offset, 4); 4779 if (length == 0xffffffff) { 4780 dwarf_size = 8; 4781 length = re->dw_read(d, &offset, 8); 4782 } else 4783 dwarf_size = 4; 4784 4785 if (length > d->d_size - offset) { 4786 warnx("invalid .dwarf_line section"); 4787 continue; 4788 } 4789 4790 endoff = offset + length; 4791 pe = (uint8_t *) d->d_buf + endoff; 4792 version = re->dw_read(d, &offset, 2); 4793 hdrlen = re->dw_read(d, &offset, dwarf_size); 4794 minlen = re->dw_read(d, &offset, 1); 4795 defstmt = re->dw_read(d, &offset, 1); 4796 lbase = re->dw_read(d, &offset, 1); 4797 lrange = re->dw_read(d, &offset, 1); 4798 opbase = re->dw_read(d, &offset, 1); 4799 4800 printf("\n"); 4801 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 4802 printf(" DWARF version:\t\t%u\n", version); 4803 printf(" Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen); 4804 printf(" Minimum Instruction Length:\t%u\n", minlen); 4805 printf(" Initial value of 'is_stmt':\t%u\n", defstmt); 4806 printf(" Line Base:\t\t\t%d\n", lbase); 4807 printf(" Line Range:\t\t\t%u\n", lrange); 4808 printf(" Opcode Base:\t\t\t%u\n", opbase); 4809 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de); 4810 printf(" (Pointer size:\t\t%u)\n", pointer_size); 4811 4812 printf("\n"); 4813 printf(" Opcodes:\n"); 4814 for (i = 1; i < opbase; i++) { 4815 oplen = re->dw_read(d, &offset, 1); 4816 printf(" Opcode %d has %u args\n", i, oplen); 4817 } 4818 4819 printf("\n"); 4820 printf(" The Directory Table:\n"); 4821 p = (uint8_t *) d->d_buf + offset; 4822 while (*p != '\0') { 4823 printf(" %s\n", (char *) p); 4824 p += strlen((char *) p) + 1; 4825 } 4826 4827 p++; 4828 printf("\n"); 4829 printf(" The File Name Table:\n"); 4830 printf(" Entry\tDir\tTime\tSize\tName\n"); 4831 i = 0; 4832 while (*p != '\0') { 4833 i++; 4834 pn = (char *) p; 4835 p += strlen(pn) + 1; 4836 dirndx = _decode_uleb128(&p, pe); 4837 mtime = _decode_uleb128(&p, pe); 4838 fsize = _decode_uleb128(&p, pe); 4839 printf(" %d\t%ju\t%ju\t%ju\t%s\n", i, 4840 (uintmax_t) dirndx, (uintmax_t) mtime, 4841 (uintmax_t) fsize, pn); 4842 } 4843 4844 #define RESET_REGISTERS \ 4845 do { \ 4846 address = 0; \ 4847 file = 1; \ 4848 line = 1; \ 4849 column = 0; \ 4850 is_stmt = defstmt; \ 4851 } while(0) 4852 4853 #define LINE(x) (lbase + (((x) - opbase) % lrange)) 4854 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen) 4855 4856 p++; 4857 printf("\n"); 4858 printf(" Line Number Statements:\n"); 4859 4860 RESET_REGISTERS; 4861 4862 while (p < pe) { 4863 4864 if (*p == 0) { 4865 /* 4866 * Extended Opcodes. 4867 */ 4868 p++; 4869 opsize = _decode_uleb128(&p, pe); 4870 printf(" Extended opcode %u: ", *p); 4871 switch (*p) { 4872 case DW_LNE_end_sequence: 4873 p++; 4874 RESET_REGISTERS; 4875 printf("End of Sequence\n"); 4876 break; 4877 case DW_LNE_set_address: 4878 p++; 4879 address = re->dw_decode(&p, 4880 pointer_size); 4881 printf("set Address to %#jx\n", 4882 (uintmax_t) address); 4883 break; 4884 case DW_LNE_define_file: 4885 p++; 4886 pn = (char *) p; 4887 p += strlen(pn) + 1; 4888 dirndx = _decode_uleb128(&p, pe); 4889 mtime = _decode_uleb128(&p, pe); 4890 fsize = _decode_uleb128(&p, pe); 4891 printf("define new file: %s\n", pn); 4892 break; 4893 default: 4894 /* Unrecognized extened opcodes. */ 4895 p += opsize; 4896 printf("unknown opcode\n"); 4897 } 4898 } else if (*p > 0 && *p < opbase) { 4899 /* 4900 * Standard Opcodes. 4901 */ 4902 switch(*p++) { 4903 case DW_LNS_copy: 4904 printf(" Copy\n"); 4905 break; 4906 case DW_LNS_advance_pc: 4907 udelta = _decode_uleb128(&p, pe) * 4908 minlen; 4909 address += udelta; 4910 printf(" Advance PC by %ju to %#jx\n", 4911 (uintmax_t) udelta, 4912 (uintmax_t) address); 4913 break; 4914 case DW_LNS_advance_line: 4915 sdelta = _decode_sleb128(&p, pe); 4916 line += sdelta; 4917 printf(" Advance Line by %jd to %ju\n", 4918 (intmax_t) sdelta, 4919 (uintmax_t) line); 4920 break; 4921 case DW_LNS_set_file: 4922 file = _decode_uleb128(&p, pe); 4923 printf(" Set File to %ju\n", 4924 (uintmax_t) file); 4925 break; 4926 case DW_LNS_set_column: 4927 column = _decode_uleb128(&p, pe); 4928 printf(" Set Column to %ju\n", 4929 (uintmax_t) column); 4930 break; 4931 case DW_LNS_negate_stmt: 4932 is_stmt = !is_stmt; 4933 printf(" Set is_stmt to %d\n", is_stmt); 4934 break; 4935 case DW_LNS_set_basic_block: 4936 printf(" Set basic block flag\n"); 4937 break; 4938 case DW_LNS_const_add_pc: 4939 address += ADDRESS(255); 4940 printf(" Advance PC by constant %ju" 4941 " to %#jx\n", 4942 (uintmax_t) ADDRESS(255), 4943 (uintmax_t) address); 4944 break; 4945 case DW_LNS_fixed_advance_pc: 4946 udelta = re->dw_decode(&p, 2); 4947 address += udelta; 4948 printf(" Advance PC by fixed value " 4949 "%ju to %#jx\n", 4950 (uintmax_t) udelta, 4951 (uintmax_t) address); 4952 break; 4953 case DW_LNS_set_prologue_end: 4954 printf(" Set prologue end flag\n"); 4955 break; 4956 case DW_LNS_set_epilogue_begin: 4957 printf(" Set epilogue begin flag\n"); 4958 break; 4959 case DW_LNS_set_isa: 4960 isa = _decode_uleb128(&p, pe); 4961 printf(" Set isa to %ju\n", 4962 (uintmax_t) isa); 4963 break; 4964 default: 4965 /* Unrecognized extended opcodes. */ 4966 printf(" Unknown extended opcode %u\n", 4967 *(p - 1)); 4968 break; 4969 } 4970 4971 } else { 4972 /* 4973 * Special Opcodes. 4974 */ 4975 line += LINE(*p); 4976 address += ADDRESS(*p); 4977 printf(" Special opcode %u: advance Address " 4978 "by %ju to %#jx and Line by %jd to %ju\n", 4979 *p - opbase, (uintmax_t) ADDRESS(*p), 4980 (uintmax_t) address, (intmax_t) LINE(*p), 4981 (uintmax_t) line); 4982 p++; 4983 } 4984 4985 4986 } 4987 } 4988 if (ret == DW_DLV_ERROR) 4989 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 4990 4991 #undef RESET_REGISTERS 4992 #undef LINE 4993 #undef ADDRESS 4994 } 4995 4996 static void 4997 dump_dwarf_line_decoded(struct readelf *re) 4998 { 4999 Dwarf_Die die; 5000 Dwarf_Line *linebuf, ln; 5001 Dwarf_Addr lineaddr; 5002 Dwarf_Signed linecount, srccount; 5003 Dwarf_Unsigned lineno, fn; 5004 Dwarf_Error de; 5005 const char *dir, *file; 5006 char **srcfiles; 5007 int i, ret; 5008 5009 printf("Decoded dump of debug contents of section .debug_line:\n\n"); 5010 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5011 NULL, &de)) == DW_DLV_OK) { 5012 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK) 5013 continue; 5014 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) != 5015 DW_DLV_OK) 5016 file = NULL; 5017 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) != 5018 DW_DLV_OK) 5019 dir = NULL; 5020 printf("CU: "); 5021 if (dir && file && file[0] != '/') 5022 printf("%s/", dir); 5023 if (file) 5024 printf("%s", file); 5025 putchar('\n'); 5026 printf("%-37s %11s %s\n", "Filename", "Line Number", 5027 "Starting Address"); 5028 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK) 5029 continue; 5030 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK) 5031 continue; 5032 for (i = 0; i < linecount; i++) { 5033 ln = linebuf[i]; 5034 if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK) 5035 continue; 5036 if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK) 5037 continue; 5038 if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK) 5039 continue; 5040 printf("%-37s %11ju %#18jx\n", 5041 basename(srcfiles[fn - 1]), (uintmax_t) lineno, 5042 (uintmax_t) lineaddr); 5043 } 5044 putchar('\n'); 5045 } 5046 } 5047 5048 static void 5049 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level) 5050 { 5051 Dwarf_Attribute *attr_list; 5052 Dwarf_Die ret_die; 5053 Dwarf_Off dieoff, cuoff, culen, attroff; 5054 Dwarf_Unsigned ate, lang, v_udata, v_sig; 5055 Dwarf_Signed attr_count, v_sdata; 5056 Dwarf_Off v_off; 5057 Dwarf_Addr v_addr; 5058 Dwarf_Half tag, attr, form; 5059 Dwarf_Block *v_block; 5060 Dwarf_Bool v_bool, is_info; 5061 Dwarf_Sig8 v_sig8; 5062 Dwarf_Error de; 5063 Dwarf_Ptr v_expr; 5064 const char *tag_str, *attr_str, *ate_str, *lang_str; 5065 char unk_tag[32], unk_attr[32]; 5066 char *v_str; 5067 uint8_t *b, *p; 5068 int i, j, abc, ret; 5069 5070 if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) { 5071 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de)); 5072 goto cont_search; 5073 } 5074 5075 printf(" <%d><%jx>: ", level, (uintmax_t) dieoff); 5076 5077 if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) { 5078 warnx("dwarf_die_CU_offset_range failed: %s", 5079 dwarf_errmsg(de)); 5080 cuoff = 0; 5081 } 5082 5083 abc = dwarf_die_abbrev_code(die); 5084 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5085 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5086 goto cont_search; 5087 } 5088 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 5089 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag); 5090 tag_str = unk_tag; 5091 } 5092 5093 printf("Abbrev Number: %d (%s)\n", abc, tag_str); 5094 5095 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5096 DW_DLV_OK) { 5097 if (ret == DW_DLV_ERROR) 5098 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5099 goto cont_search; 5100 } 5101 5102 for (i = 0; i < attr_count; i++) { 5103 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 5104 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 5105 continue; 5106 } 5107 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5108 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5109 continue; 5110 } 5111 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) { 5112 snprintf(unk_attr, sizeof(unk_attr), 5113 "[Unknown AT: %#x]", attr); 5114 attr_str = unk_attr; 5115 } 5116 if (dwarf_attroffset(attr_list[i], &attroff, &de) != 5117 DW_DLV_OK) { 5118 warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de)); 5119 attroff = 0; 5120 } 5121 printf(" <%jx> %-18s: ", (uintmax_t) attroff, attr_str); 5122 switch (form) { 5123 case DW_FORM_ref_addr: 5124 case DW_FORM_sec_offset: 5125 if (dwarf_global_formref(attr_list[i], &v_off, &de) != 5126 DW_DLV_OK) { 5127 warnx("dwarf_global_formref failed: %s", 5128 dwarf_errmsg(de)); 5129 continue; 5130 } 5131 if (form == DW_FORM_ref_addr) 5132 printf("<0x%jx>", (uintmax_t) v_off); 5133 else 5134 printf("0x%jx", (uintmax_t) v_off); 5135 break; 5136 5137 case DW_FORM_ref1: 5138 case DW_FORM_ref2: 5139 case DW_FORM_ref4: 5140 case DW_FORM_ref8: 5141 case DW_FORM_ref_udata: 5142 if (dwarf_formref(attr_list[i], &v_off, &de) != 5143 DW_DLV_OK) { 5144 warnx("dwarf_formref failed: %s", 5145 dwarf_errmsg(de)); 5146 continue; 5147 } 5148 v_off += cuoff; 5149 printf("<0x%jx>", (uintmax_t) v_off); 5150 break; 5151 5152 case DW_FORM_addr: 5153 if (dwarf_formaddr(attr_list[i], &v_addr, &de) != 5154 DW_DLV_OK) { 5155 warnx("dwarf_formaddr failed: %s", 5156 dwarf_errmsg(de)); 5157 continue; 5158 } 5159 printf("%#jx", (uintmax_t) v_addr); 5160 break; 5161 5162 case DW_FORM_data1: 5163 case DW_FORM_data2: 5164 case DW_FORM_data4: 5165 case DW_FORM_data8: 5166 case DW_FORM_udata: 5167 if (dwarf_formudata(attr_list[i], &v_udata, &de) != 5168 DW_DLV_OK) { 5169 warnx("dwarf_formudata failed: %s", 5170 dwarf_errmsg(de)); 5171 continue; 5172 } 5173 if (attr == DW_AT_high_pc) 5174 printf("0x%jx", (uintmax_t) v_udata); 5175 else 5176 printf("%ju", (uintmax_t) v_udata); 5177 break; 5178 5179 case DW_FORM_sdata: 5180 if (dwarf_formsdata(attr_list[i], &v_sdata, &de) != 5181 DW_DLV_OK) { 5182 warnx("dwarf_formudata failed: %s", 5183 dwarf_errmsg(de)); 5184 continue; 5185 } 5186 printf("%jd", (intmax_t) v_sdata); 5187 break; 5188 5189 case DW_FORM_flag: 5190 if (dwarf_formflag(attr_list[i], &v_bool, &de) != 5191 DW_DLV_OK) { 5192 warnx("dwarf_formflag failed: %s", 5193 dwarf_errmsg(de)); 5194 continue; 5195 } 5196 printf("%jd", (intmax_t) v_bool); 5197 break; 5198 5199 case DW_FORM_flag_present: 5200 putchar('1'); 5201 break; 5202 5203 case DW_FORM_string: 5204 case DW_FORM_strp: 5205 if (dwarf_formstring(attr_list[i], &v_str, &de) != 5206 DW_DLV_OK) { 5207 warnx("dwarf_formstring failed: %s", 5208 dwarf_errmsg(de)); 5209 continue; 5210 } 5211 if (form == DW_FORM_string) 5212 printf("%s", v_str); 5213 else 5214 printf("(indirect string) %s", v_str); 5215 break; 5216 5217 case DW_FORM_block: 5218 case DW_FORM_block1: 5219 case DW_FORM_block2: 5220 case DW_FORM_block4: 5221 if (dwarf_formblock(attr_list[i], &v_block, &de) != 5222 DW_DLV_OK) { 5223 warnx("dwarf_formblock failed: %s", 5224 dwarf_errmsg(de)); 5225 continue; 5226 } 5227 printf("%ju byte block:", (uintmax_t) v_block->bl_len); 5228 b = v_block->bl_data; 5229 for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++) 5230 printf(" %x", b[j]); 5231 printf("\t("); 5232 dump_dwarf_block(re, v_block->bl_data, v_block->bl_len); 5233 putchar(')'); 5234 break; 5235 5236 case DW_FORM_exprloc: 5237 if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr, 5238 &de) != DW_DLV_OK) { 5239 warnx("dwarf_formexprloc failed: %s", 5240 dwarf_errmsg(de)); 5241 continue; 5242 } 5243 printf("%ju byte block:", (uintmax_t) v_udata); 5244 b = v_expr; 5245 for (j = 0; (Dwarf_Unsigned) j < v_udata; j++) 5246 printf(" %x", b[j]); 5247 printf("\t("); 5248 dump_dwarf_block(re, v_expr, v_udata); 5249 putchar(')'); 5250 break; 5251 5252 case DW_FORM_ref_sig8: 5253 if (dwarf_formsig8(attr_list[i], &v_sig8, &de) != 5254 DW_DLV_OK) { 5255 warnx("dwarf_formsig8 failed: %s", 5256 dwarf_errmsg(de)); 5257 continue; 5258 } 5259 p = (uint8_t *)(uintptr_t) &v_sig8.signature[0]; 5260 v_sig = re->dw_decode(&p, 8); 5261 printf("signature: 0x%jx", (uintmax_t) v_sig); 5262 } 5263 switch (attr) { 5264 case DW_AT_encoding: 5265 if (dwarf_attrval_unsigned(die, attr, &ate, &de) != 5266 DW_DLV_OK) 5267 break; 5268 if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK) 5269 ate_str = "DW_ATE_UNKNOWN"; 5270 printf("\t(%s)", &ate_str[strlen("DW_ATE_")]); 5271 break; 5272 5273 case DW_AT_language: 5274 if (dwarf_attrval_unsigned(die, attr, &lang, &de) != 5275 DW_DLV_OK) 5276 break; 5277 if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK) 5278 break; 5279 printf("\t(%s)", &lang_str[strlen("DW_LANG_")]); 5280 break; 5281 5282 case DW_AT_location: 5283 case DW_AT_string_length: 5284 case DW_AT_return_addr: 5285 case DW_AT_data_member_location: 5286 case DW_AT_frame_base: 5287 case DW_AT_segment: 5288 case DW_AT_static_link: 5289 case DW_AT_use_location: 5290 case DW_AT_vtable_elem_location: 5291 switch (form) { 5292 case DW_FORM_data4: 5293 case DW_FORM_data8: 5294 case DW_FORM_sec_offset: 5295 printf("\t(location list)"); 5296 break; 5297 default: 5298 break; 5299 } 5300 5301 default: 5302 break; 5303 } 5304 putchar('\n'); 5305 } 5306 5307 5308 cont_search: 5309 /* Search children. */ 5310 ret = dwarf_child(die, &ret_die, &de); 5311 if (ret == DW_DLV_ERROR) 5312 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5313 else if (ret == DW_DLV_OK) 5314 dump_dwarf_die(re, ret_die, level + 1); 5315 5316 /* Search sibling. */ 5317 is_info = dwarf_get_die_infotypes_flag(die); 5318 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 5319 if (ret == DW_DLV_ERROR) 5320 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5321 else if (ret == DW_DLV_OK) 5322 dump_dwarf_die(re, ret_die, level); 5323 5324 dwarf_dealloc(re->dbg, die, DW_DLA_DIE); 5325 } 5326 5327 static void 5328 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize, 5329 Dwarf_Half ver) 5330 { 5331 5332 re->cu_psize = psize; 5333 re->cu_osize = osize; 5334 re->cu_ver = ver; 5335 } 5336 5337 static void 5338 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info) 5339 { 5340 struct section *s; 5341 Dwarf_Die die; 5342 Dwarf_Error de; 5343 Dwarf_Half tag, version, pointer_size, off_size; 5344 Dwarf_Off cu_offset, cu_length; 5345 Dwarf_Off aboff; 5346 Dwarf_Unsigned typeoff; 5347 Dwarf_Sig8 sig8; 5348 Dwarf_Unsigned sig; 5349 uint8_t *p; 5350 const char *sn; 5351 int i, ret; 5352 5353 sn = is_info ? ".debug_info" : ".debug_types"; 5354 5355 s = NULL; 5356 for (i = 0; (size_t) i < re->shnum; i++) { 5357 s = &re->sl[i]; 5358 if (s->name != NULL && !strcmp(s->name, sn)) 5359 break; 5360 } 5361 if ((size_t) i >= re->shnum) 5362 return; 5363 5364 do { 5365 printf("\nDump of debug contents of section %s:\n", sn); 5366 5367 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL, 5368 &version, &aboff, &pointer_size, &off_size, NULL, &sig8, 5369 &typeoff, NULL, &de)) == DW_DLV_OK) { 5370 set_cu_context(re, pointer_size, off_size, version); 5371 die = NULL; 5372 while (dwarf_siblingof_b(re->dbg, die, &die, is_info, 5373 &de) == DW_DLV_OK) { 5374 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5375 warnx("dwarf_tag failed: %s", 5376 dwarf_errmsg(de)); 5377 continue; 5378 } 5379 /* XXX: What about DW_TAG_partial_unit? */ 5380 if ((is_info && tag == DW_TAG_compile_unit) || 5381 (!is_info && tag == DW_TAG_type_unit)) 5382 break; 5383 } 5384 if (die == NULL && is_info) { 5385 warnx("could not find DW_TAG_compile_unit " 5386 "die"); 5387 continue; 5388 } else if (die == NULL && !is_info) { 5389 warnx("could not find DW_TAG_type_unit die"); 5390 continue; 5391 } 5392 5393 if (dwarf_die_CU_offset_range(die, &cu_offset, 5394 &cu_length, &de) != DW_DLV_OK) { 5395 warnx("dwarf_die_CU_offset failed: %s", 5396 dwarf_errmsg(de)); 5397 continue; 5398 } 5399 5400 cu_length -= off_size == 4 ? 4 : 12; 5401 5402 sig = 0; 5403 if (!is_info) { 5404 p = (uint8_t *)(uintptr_t) &sig8.signature[0]; 5405 sig = re->dw_decode(&p, 8); 5406 } 5407 5408 printf("\n Type Unit @ offset 0x%jx:\n", 5409 (uintmax_t) cu_offset); 5410 printf(" Length:\t\t%#jx (%d-bit)\n", 5411 (uintmax_t) cu_length, off_size == 4 ? 32 : 64); 5412 printf(" Version:\t\t%u\n", version); 5413 printf(" Abbrev Offset:\t0x%jx\n", 5414 (uintmax_t) aboff); 5415 printf(" Pointer Size:\t%u\n", pointer_size); 5416 if (!is_info) { 5417 printf(" Signature:\t\t0x%016jx\n", 5418 (uintmax_t) sig); 5419 printf(" Type Offset:\t0x%jx\n", 5420 (uintmax_t) typeoff); 5421 } 5422 5423 dump_dwarf_die(re, die, 0); 5424 } 5425 if (ret == DW_DLV_ERROR) 5426 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5427 if (is_info) 5428 break; 5429 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 5430 } 5431 5432 static void 5433 dump_dwarf_abbrev(struct readelf *re) 5434 { 5435 Dwarf_Abbrev ab; 5436 Dwarf_Off aboff, atoff; 5437 Dwarf_Unsigned length, attr_count; 5438 Dwarf_Signed flag, form; 5439 Dwarf_Half tag, attr; 5440 Dwarf_Error de; 5441 const char *tag_str, *attr_str, *form_str; 5442 char unk_tag[32], unk_attr[32], unk_form[32]; 5443 int i, j, ret; 5444 5445 printf("\nContents of section .debug_abbrev:\n\n"); 5446 5447 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff, 5448 NULL, NULL, &de)) == DW_DLV_OK) { 5449 printf(" Number TAG\n"); 5450 i = 0; 5451 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length, 5452 &attr_count, &de)) == DW_DLV_OK) { 5453 if (length == 1) { 5454 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5455 break; 5456 } 5457 aboff += length; 5458 printf("%4d", ++i); 5459 if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) { 5460 warnx("dwarf_get_abbrev_tag failed: %s", 5461 dwarf_errmsg(de)); 5462 goto next_abbrev; 5463 } 5464 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 5465 snprintf(unk_tag, sizeof(unk_tag), 5466 "[Unknown Tag: %#x]", tag); 5467 tag_str = unk_tag; 5468 } 5469 if (dwarf_get_abbrev_children_flag(ab, &flag, &de) != 5470 DW_DLV_OK) { 5471 warnx("dwarf_get_abbrev_children_flag failed:" 5472 " %s", dwarf_errmsg(de)); 5473 goto next_abbrev; 5474 } 5475 printf(" %s %s\n", tag_str, 5476 flag ? "[has children]" : "[no children]"); 5477 for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) { 5478 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j, 5479 &attr, &form, &atoff, &de) != DW_DLV_OK) { 5480 warnx("dwarf_get_abbrev_entry failed:" 5481 " %s", dwarf_errmsg(de)); 5482 continue; 5483 } 5484 if (dwarf_get_AT_name(attr, &attr_str) != 5485 DW_DLV_OK) { 5486 snprintf(unk_attr, sizeof(unk_attr), 5487 "[Unknown AT: %#x]", attr); 5488 attr_str = unk_attr; 5489 } 5490 if (dwarf_get_FORM_name(form, &form_str) != 5491 DW_DLV_OK) { 5492 snprintf(unk_form, sizeof(unk_form), 5493 "[Unknown Form: %#x]", 5494 (Dwarf_Half) form); 5495 form_str = unk_form; 5496 } 5497 printf(" %-18s %s\n", attr_str, form_str); 5498 } 5499 next_abbrev: 5500 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5501 } 5502 if (ret != DW_DLV_OK) 5503 warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de)); 5504 } 5505 if (ret == DW_DLV_ERROR) 5506 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5507 } 5508 5509 static void 5510 dump_dwarf_pubnames(struct readelf *re) 5511 { 5512 struct section *s; 5513 Dwarf_Off die_off; 5514 Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length; 5515 Dwarf_Signed cnt; 5516 Dwarf_Global *globs; 5517 Dwarf_Half nt_version; 5518 Dwarf_Error de; 5519 Elf_Data *d; 5520 char *glob_name; 5521 int i, dwarf_size, elferr; 5522 5523 printf("\nContents of the .debug_pubnames section:\n"); 5524 5525 s = NULL; 5526 for (i = 0; (size_t) i < re->shnum; i++) { 5527 s = &re->sl[i]; 5528 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames")) 5529 break; 5530 } 5531 if ((size_t) i >= re->shnum) 5532 return; 5533 5534 (void) elf_errno(); 5535 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5536 elferr = elf_errno(); 5537 if (elferr != 0) 5538 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5539 return; 5540 } 5541 if (d->d_size <= 0) 5542 return; 5543 5544 /* Read in .debug_pubnames section table header. */ 5545 offset = 0; 5546 length = re->dw_read(d, &offset, 4); 5547 if (length == 0xffffffff) { 5548 dwarf_size = 8; 5549 length = re->dw_read(d, &offset, 8); 5550 } else 5551 dwarf_size = 4; 5552 5553 if (length > d->d_size - offset) { 5554 warnx("invalid .dwarf_pubnames section"); 5555 return; 5556 } 5557 5558 nt_version = re->dw_read(d, &offset, 2); 5559 nt_cu_offset = re->dw_read(d, &offset, dwarf_size); 5560 nt_cu_length = re->dw_read(d, &offset, dwarf_size); 5561 printf(" Length:\t\t\t\t%ju\n", (uintmax_t) length); 5562 printf(" Version:\t\t\t\t%u\n", nt_version); 5563 printf(" Offset into .debug_info section:\t%ju\n", 5564 (uintmax_t) nt_cu_offset); 5565 printf(" Size of area in .debug_info section:\t%ju\n", 5566 (uintmax_t) nt_cu_length); 5567 5568 if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) { 5569 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de)); 5570 return; 5571 } 5572 5573 printf("\n Offset Name\n"); 5574 for (i = 0; i < cnt; i++) { 5575 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) { 5576 warnx("dwarf_globname failed: %s", dwarf_errmsg(de)); 5577 continue; 5578 } 5579 if (dwarf_global_die_offset(globs[i], &die_off, &de) != 5580 DW_DLV_OK) { 5581 warnx("dwarf_global_die_offset failed: %s", 5582 dwarf_errmsg(de)); 5583 continue; 5584 } 5585 printf(" %-11ju %s\n", (uintmax_t) die_off, glob_name); 5586 } 5587 } 5588 5589 static void 5590 dump_dwarf_aranges(struct readelf *re) 5591 { 5592 struct section *s; 5593 Dwarf_Arange *aranges; 5594 Dwarf_Addr start; 5595 Dwarf_Unsigned offset, length, as_cu_offset; 5596 Dwarf_Off die_off; 5597 Dwarf_Signed cnt; 5598 Dwarf_Half as_version, as_addrsz, as_segsz; 5599 Dwarf_Error de; 5600 Elf_Data *d; 5601 int i, dwarf_size, elferr; 5602 5603 printf("\nContents of section .debug_aranges:\n"); 5604 5605 s = NULL; 5606 for (i = 0; (size_t) i < re->shnum; i++) { 5607 s = &re->sl[i]; 5608 if (s->name != NULL && !strcmp(s->name, ".debug_aranges")) 5609 break; 5610 } 5611 if ((size_t) i >= re->shnum) 5612 return; 5613 5614 (void) elf_errno(); 5615 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5616 elferr = elf_errno(); 5617 if (elferr != 0) 5618 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5619 return; 5620 } 5621 if (d->d_size <= 0) 5622 return; 5623 5624 /* Read in the .debug_aranges section table header. */ 5625 offset = 0; 5626 length = re->dw_read(d, &offset, 4); 5627 if (length == 0xffffffff) { 5628 dwarf_size = 8; 5629 length = re->dw_read(d, &offset, 8); 5630 } else 5631 dwarf_size = 4; 5632 5633 if (length > d->d_size - offset) { 5634 warnx("invalid .dwarf_aranges section"); 5635 return; 5636 } 5637 5638 as_version = re->dw_read(d, &offset, 2); 5639 as_cu_offset = re->dw_read(d, &offset, dwarf_size); 5640 as_addrsz = re->dw_read(d, &offset, 1); 5641 as_segsz = re->dw_read(d, &offset, 1); 5642 5643 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 5644 printf(" Version:\t\t\t%u\n", as_version); 5645 printf(" Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset); 5646 printf(" Pointer Size:\t\t\t%u\n", as_addrsz); 5647 printf(" Segment Size:\t\t\t%u\n", as_segsz); 5648 5649 if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) { 5650 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de)); 5651 return; 5652 } 5653 5654 printf("\n Address Length\n"); 5655 for (i = 0; i < cnt; i++) { 5656 if (dwarf_get_arange_info(aranges[i], &start, &length, 5657 &die_off, &de) != DW_DLV_OK) { 5658 warnx("dwarf_get_arange_info failed: %s", 5659 dwarf_errmsg(de)); 5660 continue; 5661 } 5662 printf(" %08jx %ju\n", (uintmax_t) start, 5663 (uintmax_t) length); 5664 } 5665 } 5666 5667 static void 5668 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) 5669 { 5670 Dwarf_Attribute *attr_list; 5671 Dwarf_Ranges *ranges; 5672 Dwarf_Die ret_die; 5673 Dwarf_Error de; 5674 Dwarf_Addr base0; 5675 Dwarf_Half attr; 5676 Dwarf_Signed attr_count, cnt; 5677 Dwarf_Unsigned off, bytecnt; 5678 int i, j, ret; 5679 5680 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5681 DW_DLV_OK) { 5682 if (ret == DW_DLV_ERROR) 5683 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5684 goto cont_search; 5685 } 5686 5687 for (i = 0; i < attr_count; i++) { 5688 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5689 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5690 continue; 5691 } 5692 if (attr != DW_AT_ranges) 5693 continue; 5694 if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) { 5695 warnx("dwarf_formudata failed: %s", dwarf_errmsg(de)); 5696 continue; 5697 } 5698 if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt, 5699 &bytecnt, &de) != DW_DLV_OK) 5700 continue; 5701 base0 = base; 5702 for (j = 0; j < cnt; j++) { 5703 printf(" %08jx ", (uintmax_t) off); 5704 if (ranges[j].dwr_type == DW_RANGES_END) { 5705 printf("%s\n", "<End of list>"); 5706 continue; 5707 } else if (ranges[j].dwr_type == 5708 DW_RANGES_ADDRESS_SELECTION) { 5709 base0 = ranges[j].dwr_addr2; 5710 continue; 5711 } 5712 if (re->ec == ELFCLASS32) 5713 printf("%08jx %08jx\n", 5714 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5715 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5716 else 5717 printf("%016jx %016jx\n", 5718 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5719 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5720 } 5721 } 5722 5723 cont_search: 5724 /* Search children. */ 5725 ret = dwarf_child(die, &ret_die, &de); 5726 if (ret == DW_DLV_ERROR) 5727 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5728 else if (ret == DW_DLV_OK) 5729 dump_dwarf_ranges_foreach(re, ret_die, base); 5730 5731 /* Search sibling. */ 5732 ret = dwarf_siblingof(re->dbg, die, &ret_die, &de); 5733 if (ret == DW_DLV_ERROR) 5734 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5735 else if (ret == DW_DLV_OK) 5736 dump_dwarf_ranges_foreach(re, ret_die, base); 5737 } 5738 5739 static void 5740 dump_dwarf_ranges(struct readelf *re) 5741 { 5742 Dwarf_Ranges *ranges; 5743 Dwarf_Die die; 5744 Dwarf_Signed cnt; 5745 Dwarf_Unsigned bytecnt; 5746 Dwarf_Half tag; 5747 Dwarf_Error de; 5748 Dwarf_Unsigned lowpc; 5749 int ret; 5750 5751 if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) != 5752 DW_DLV_OK) 5753 return; 5754 5755 printf("Contents of the .debug_ranges section:\n\n"); 5756 if (re->ec == ELFCLASS32) 5757 printf(" %-8s %-8s %s\n", "Offset", "Begin", "End"); 5758 else 5759 printf(" %-8s %-16s %s\n", "Offset", "Begin", "End"); 5760 5761 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5762 NULL, &de)) == DW_DLV_OK) { 5763 die = NULL; 5764 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 5765 continue; 5766 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5767 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5768 continue; 5769 } 5770 /* XXX: What about DW_TAG_partial_unit? */ 5771 lowpc = 0; 5772 if (tag == DW_TAG_compile_unit) { 5773 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc, 5774 &de) != DW_DLV_OK) 5775 lowpc = 0; 5776 } 5777 5778 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc); 5779 } 5780 putchar('\n'); 5781 } 5782 5783 static void 5784 dump_dwarf_macinfo(struct readelf *re) 5785 { 5786 Dwarf_Unsigned offset; 5787 Dwarf_Signed cnt; 5788 Dwarf_Macro_Details *md; 5789 Dwarf_Error de; 5790 const char *mi_str; 5791 char unk_mi[32]; 5792 int i; 5793 5794 #define _MAX_MACINFO_ENTRY 65535 5795 5796 printf("\nContents of section .debug_macinfo:\n\n"); 5797 5798 offset = 0; 5799 while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY, 5800 &cnt, &md, &de) == DW_DLV_OK) { 5801 for (i = 0; i < cnt; i++) { 5802 offset = md[i].dmd_offset + 1; 5803 if (md[i].dmd_type == 0) 5804 break; 5805 if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) != 5806 DW_DLV_OK) { 5807 snprintf(unk_mi, sizeof(unk_mi), 5808 "[Unknown MACINFO: %#x]", md[i].dmd_type); 5809 mi_str = unk_mi; 5810 } 5811 printf(" %s", mi_str); 5812 switch (md[i].dmd_type) { 5813 case DW_MACINFO_define: 5814 case DW_MACINFO_undef: 5815 printf(" - lineno : %jd macro : %s\n", 5816 (intmax_t) md[i].dmd_lineno, 5817 md[i].dmd_macro); 5818 break; 5819 case DW_MACINFO_start_file: 5820 printf(" - lineno : %jd filenum : %jd\n", 5821 (intmax_t) md[i].dmd_lineno, 5822 (intmax_t) md[i].dmd_fileindex); 5823 break; 5824 default: 5825 putchar('\n'); 5826 break; 5827 } 5828 } 5829 } 5830 5831 #undef _MAX_MACINFO_ENTRY 5832 } 5833 5834 static void 5835 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts, 5836 Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc, 5837 Dwarf_Debug dbg) 5838 { 5839 Dwarf_Frame_Op *oplist; 5840 Dwarf_Signed opcnt, delta; 5841 Dwarf_Small op; 5842 Dwarf_Error de; 5843 const char *op_str; 5844 char unk_op[32]; 5845 int i; 5846 5847 if (dwarf_expand_frame_instructions(cie, insts, len, &oplist, 5848 &opcnt, &de) != DW_DLV_OK) { 5849 warnx("dwarf_expand_frame_instructions failed: %s", 5850 dwarf_errmsg(de)); 5851 return; 5852 } 5853 5854 for (i = 0; i < opcnt; i++) { 5855 if (oplist[i].fp_base_op != 0) 5856 op = oplist[i].fp_base_op << 6; 5857 else 5858 op = oplist[i].fp_extended_op; 5859 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) { 5860 snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]", 5861 op); 5862 op_str = unk_op; 5863 } 5864 printf(" %s", op_str); 5865 switch (op) { 5866 case DW_CFA_advance_loc: 5867 delta = oplist[i].fp_offset * caf; 5868 pc += delta; 5869 printf(": %ju to %08jx", (uintmax_t) delta, 5870 (uintmax_t) pc); 5871 break; 5872 case DW_CFA_offset: 5873 case DW_CFA_offset_extended: 5874 case DW_CFA_offset_extended_sf: 5875 delta = oplist[i].fp_offset * daf; 5876 printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register, 5877 dwarf_regname(re, oplist[i].fp_register), 5878 (intmax_t) delta); 5879 break; 5880 case DW_CFA_restore: 5881 printf(": r%u (%s)", oplist[i].fp_register, 5882 dwarf_regname(re, oplist[i].fp_register)); 5883 break; 5884 case DW_CFA_set_loc: 5885 pc = oplist[i].fp_offset; 5886 printf(": to %08jx", (uintmax_t) pc); 5887 break; 5888 case DW_CFA_advance_loc1: 5889 case DW_CFA_advance_loc2: 5890 case DW_CFA_advance_loc4: 5891 pc += oplist[i].fp_offset; 5892 printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset, 5893 (uintmax_t) pc); 5894 break; 5895 case DW_CFA_def_cfa: 5896 printf(": r%u (%s) ofs %ju", oplist[i].fp_register, 5897 dwarf_regname(re, oplist[i].fp_register), 5898 (uintmax_t) oplist[i].fp_offset); 5899 break; 5900 case DW_CFA_def_cfa_sf: 5901 printf(": r%u (%s) ofs %jd", oplist[i].fp_register, 5902 dwarf_regname(re, oplist[i].fp_register), 5903 (intmax_t) (oplist[i].fp_offset * daf)); 5904 break; 5905 case DW_CFA_def_cfa_register: 5906 printf(": r%u (%s)", oplist[i].fp_register, 5907 dwarf_regname(re, oplist[i].fp_register)); 5908 break; 5909 case DW_CFA_def_cfa_offset: 5910 printf(": %ju", (uintmax_t) oplist[i].fp_offset); 5911 break; 5912 case DW_CFA_def_cfa_offset_sf: 5913 printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf)); 5914 break; 5915 default: 5916 break; 5917 } 5918 putchar('\n'); 5919 } 5920 5921 dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK); 5922 } 5923 5924 static char * 5925 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off) 5926 { 5927 static char rs[16]; 5928 5929 if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE) 5930 snprintf(rs, sizeof(rs), "%c", 'u'); 5931 else if (reg == DW_FRAME_CFA_COL) 5932 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off); 5933 else 5934 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg), 5935 (intmax_t) off); 5936 5937 return (rs); 5938 } 5939 5940 static int 5941 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc, 5942 Dwarf_Unsigned func_len, Dwarf_Half cie_ra) 5943 { 5944 Dwarf_Regtable rt; 5945 Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc; 5946 Dwarf_Error de; 5947 char *vec; 5948 int i; 5949 5950 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7)) 5951 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7))) 5952 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7))) 5953 #define RT(x) rt.rules[(x)] 5954 5955 vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1); 5956 if (vec == NULL) 5957 err(EXIT_FAILURE, "calloc failed"); 5958 5959 pre_pc = ~((Dwarf_Addr) 0); 5960 cur_pc = pc; 5961 end_pc = pc + func_len; 5962 for (; cur_pc < end_pc; cur_pc++) { 5963 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5964 &de) != DW_DLV_OK) { 5965 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5966 dwarf_errmsg(de)); 5967 return (-1); 5968 } 5969 if (row_pc == pre_pc) 5970 continue; 5971 pre_pc = row_pc; 5972 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5973 if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE) 5974 BIT_SET(vec, i); 5975 } 5976 } 5977 5978 printf(" LOC CFA "); 5979 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 5980 if (BIT_ISSET(vec, i)) { 5981 if ((Dwarf_Half) i == cie_ra) 5982 printf("ra "); 5983 else 5984 printf("%-5s", 5985 dwarf_regname(re, (unsigned int) i)); 5986 } 5987 } 5988 putchar('\n'); 5989 5990 pre_pc = ~((Dwarf_Addr) 0); 5991 cur_pc = pc; 5992 end_pc = pc + func_len; 5993 for (; cur_pc < end_pc; cur_pc++) { 5994 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 5995 &de) != DW_DLV_OK) { 5996 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 5997 dwarf_errmsg(de)); 5998 return (-1); 5999 } 6000 if (row_pc == pre_pc) 6001 continue; 6002 pre_pc = row_pc; 6003 printf("%08jx ", (uintmax_t) row_pc); 6004 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum, 6005 RT(0).dw_offset)); 6006 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 6007 if (BIT_ISSET(vec, i)) { 6008 printf("%-5s", get_regoff_str(re, 6009 RT(i).dw_regnum, RT(i).dw_offset)); 6010 } 6011 } 6012 putchar('\n'); 6013 } 6014 6015 free(vec); 6016 6017 return (0); 6018 6019 #undef BIT_SET 6020 #undef BIT_CLR 6021 #undef BIT_ISSET 6022 #undef RT 6023 } 6024 6025 static void 6026 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) 6027 { 6028 Dwarf_Cie *cie_list, cie, pre_cie; 6029 Dwarf_Fde *fde_list, fde; 6030 Dwarf_Off cie_offset, fde_offset; 6031 Dwarf_Unsigned cie_length, fde_instlen; 6032 Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length; 6033 Dwarf_Signed cie_count, fde_count, cie_index; 6034 Dwarf_Addr low_pc; 6035 Dwarf_Half cie_ra; 6036 Dwarf_Small cie_version; 6037 Dwarf_Ptr fde_addr, fde_inst, cie_inst; 6038 char *cie_aug, c; 6039 int i, eh_frame; 6040 Dwarf_Error de; 6041 6042 printf("\nThe section %s contains:\n\n", s->name); 6043 6044 if (!strcmp(s->name, ".debug_frame")) { 6045 eh_frame = 0; 6046 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count, 6047 &fde_list, &fde_count, &de) != DW_DLV_OK) { 6048 warnx("dwarf_get_fde_list failed: %s", 6049 dwarf_errmsg(de)); 6050 return; 6051 } 6052 } else if (!strcmp(s->name, ".eh_frame")) { 6053 eh_frame = 1; 6054 if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, 6055 &fde_list, &fde_count, &de) != DW_DLV_OK) { 6056 warnx("dwarf_get_fde_list_eh failed: %s", 6057 dwarf_errmsg(de)); 6058 return; 6059 } 6060 } else 6061 return; 6062 6063 pre_cie = NULL; 6064 for (i = 0; i < fde_count; i++) { 6065 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) { 6066 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 6067 continue; 6068 } 6069 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) { 6070 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 6071 continue; 6072 } 6073 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr, 6074 &fde_length, &cie_offset, &cie_index, &fde_offset, 6075 &de) != DW_DLV_OK) { 6076 warnx("dwarf_get_fde_range failed: %s", 6077 dwarf_errmsg(de)); 6078 continue; 6079 } 6080 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen, 6081 &de) != DW_DLV_OK) { 6082 warnx("dwarf_get_fde_instr_bytes failed: %s", 6083 dwarf_errmsg(de)); 6084 continue; 6085 } 6086 if (pre_cie == NULL || cie != pre_cie) { 6087 pre_cie = cie; 6088 if (dwarf_get_cie_info(cie, &cie_length, &cie_version, 6089 &cie_aug, &cie_caf, &cie_daf, &cie_ra, 6090 &cie_inst, &cie_instlen, &de) != DW_DLV_OK) { 6091 warnx("dwarf_get_cie_info failed: %s", 6092 dwarf_errmsg(de)); 6093 continue; 6094 } 6095 printf("%08jx %08jx %8.8jx CIE", 6096 (uintmax_t) cie_offset, 6097 (uintmax_t) cie_length, 6098 (uintmax_t) (eh_frame ? 0 : ~0U)); 6099 if (!alt) { 6100 putchar('\n'); 6101 printf(" Version:\t\t\t%u\n", cie_version); 6102 printf(" Augmentation:\t\t\t\""); 6103 while ((c = *cie_aug++) != '\0') 6104 putchar(c); 6105 printf("\"\n"); 6106 printf(" Code alignment factor:\t%ju\n", 6107 (uintmax_t) cie_caf); 6108 printf(" Data alignment factor:\t%jd\n", 6109 (intmax_t) cie_daf); 6110 printf(" Return address column:\t%ju\n", 6111 (uintmax_t) cie_ra); 6112 putchar('\n'); 6113 dump_dwarf_frame_inst(re, cie, cie_inst, 6114 cie_instlen, cie_caf, cie_daf, 0, 6115 re->dbg); 6116 putchar('\n'); 6117 } else { 6118 printf(" \""); 6119 while ((c = *cie_aug++) != '\0') 6120 putchar(c); 6121 putchar('"'); 6122 printf(" cf=%ju df=%jd ra=%ju\n", 6123 (uintmax_t) cie_caf, 6124 (uintmax_t) cie_daf, 6125 (uintmax_t) cie_ra); 6126 dump_dwarf_frame_regtable(re, fde, low_pc, 1, 6127 cie_ra); 6128 putchar('\n'); 6129 } 6130 } 6131 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n", 6132 (uintmax_t) fde_offset, (uintmax_t) fde_length, 6133 (uintmax_t) cie_offset, 6134 (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset : 6135 cie_offset), 6136 (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len)); 6137 if (!alt) 6138 dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen, 6139 cie_caf, cie_daf, low_pc, re->dbg); 6140 else 6141 dump_dwarf_frame_regtable(re, fde, low_pc, func_len, 6142 cie_ra); 6143 putchar('\n'); 6144 } 6145 } 6146 6147 static void 6148 dump_dwarf_frame(struct readelf *re, int alt) 6149 { 6150 struct section *s; 6151 int i; 6152 6153 (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL); 6154 6155 for (i = 0; (size_t) i < re->shnum; i++) { 6156 s = &re->sl[i]; 6157 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") || 6158 !strcmp(s->name, ".eh_frame"))) 6159 dump_dwarf_frame_section(re, s, alt); 6160 } 6161 } 6162 6163 static void 6164 dump_dwarf_str(struct readelf *re) 6165 { 6166 struct section *s; 6167 Elf_Data *d; 6168 unsigned char *p; 6169 int elferr, end, i, j; 6170 6171 printf("\nContents of section .debug_str:\n"); 6172 6173 s = NULL; 6174 for (i = 0; (size_t) i < re->shnum; i++) { 6175 s = &re->sl[i]; 6176 if (s->name != NULL && !strcmp(s->name, ".debug_str")) 6177 break; 6178 } 6179 if ((size_t) i >= re->shnum) 6180 return; 6181 6182 (void) elf_errno(); 6183 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 6184 elferr = elf_errno(); 6185 if (elferr != 0) 6186 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 6187 return; 6188 } 6189 if (d->d_size <= 0) 6190 return; 6191 6192 for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) { 6193 printf(" 0x%08x", (unsigned int) i); 6194 if ((size_t) i + 16 > d->d_size) 6195 end = d->d_size; 6196 else 6197 end = i + 16; 6198 for (j = i; j < i + 16; j++) { 6199 if ((j - i) % 4 == 0) 6200 putchar(' '); 6201 if (j >= end) { 6202 printf(" "); 6203 continue; 6204 } 6205 printf("%02x", (uint8_t) p[j]); 6206 } 6207 putchar(' '); 6208 for (j = i; j < end; j++) { 6209 if (isprint(p[j])) 6210 putchar(p[j]); 6211 else if (p[j] == 0) 6212 putchar('.'); 6213 else 6214 putchar(' '); 6215 } 6216 putchar('\n'); 6217 } 6218 } 6219 6220 static int 6221 loc_at_comparator(const void *la1, const void *la2) 6222 { 6223 const struct loc_at *left, *right; 6224 6225 left = (const struct loc_at *)la1; 6226 right = (const struct loc_at *)la2; 6227 6228 if (left->la_off > right->la_off) 6229 return (1); 6230 else if (left->la_off < right->la_off) 6231 return (-1); 6232 else 6233 return (0); 6234 } 6235 6236 static void 6237 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc, 6238 struct loc_at **la_list, size_t *la_list_len, size_t *la_list_cap) 6239 { 6240 struct loc_at *la; 6241 Dwarf_Attribute *attr_list; 6242 Dwarf_Die ret_die; 6243 Dwarf_Unsigned off; 6244 Dwarf_Off ref; 6245 Dwarf_Signed attr_count; 6246 Dwarf_Half attr, form; 6247 Dwarf_Bool is_info; 6248 Dwarf_Error de; 6249 int i, ret; 6250 6251 is_info = dwarf_get_die_infotypes_flag(die); 6252 6253 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 6254 DW_DLV_OK) { 6255 if (ret == DW_DLV_ERROR) 6256 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 6257 goto cont_search; 6258 } 6259 for (i = 0; i < attr_count; i++) { 6260 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 6261 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 6262 continue; 6263 } 6264 if (attr != DW_AT_location && 6265 attr != DW_AT_string_length && 6266 attr != DW_AT_return_addr && 6267 attr != DW_AT_data_member_location && 6268 attr != DW_AT_frame_base && 6269 attr != DW_AT_segment && 6270 attr != DW_AT_static_link && 6271 attr != DW_AT_use_location && 6272 attr != DW_AT_vtable_elem_location) 6273 continue; 6274 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 6275 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 6276 continue; 6277 } 6278 if (form == DW_FORM_data4 || form == DW_FORM_data8) { 6279 if (dwarf_formudata(attr_list[i], &off, &de) != 6280 DW_DLV_OK) { 6281 warnx("dwarf_formudata failed: %s", 6282 dwarf_errmsg(de)); 6283 continue; 6284 } 6285 } else if (form == DW_FORM_sec_offset) { 6286 if (dwarf_global_formref(attr_list[i], &ref, &de) != 6287 DW_DLV_OK) { 6288 warnx("dwarf_global_formref failed: %s", 6289 dwarf_errmsg(de)); 6290 continue; 6291 } 6292 off = ref; 6293 } else 6294 continue; 6295 6296 if (*la_list_cap == *la_list_len) { 6297 *la_list = realloc(*la_list, 6298 *la_list_cap * 2 * sizeof(**la_list)); 6299 if (la_list == NULL) 6300 errx(EXIT_FAILURE, "realloc failed"); 6301 *la_list_cap *= 2; 6302 } 6303 la = &((*la_list)[*la_list_len]); 6304 la->la_at = attr_list[i]; 6305 la->la_off = off; 6306 la->la_lowpc = lowpc; 6307 la->la_cu_psize = re->cu_psize; 6308 la->la_cu_osize = re->cu_osize; 6309 la->la_cu_ver = re->cu_ver; 6310 (*la_list_len)++; 6311 } 6312 6313 cont_search: 6314 /* Search children. */ 6315 ret = dwarf_child(die, &ret_die, &de); 6316 if (ret == DW_DLV_ERROR) 6317 warnx("dwarf_child: %s", dwarf_errmsg(de)); 6318 else if (ret == DW_DLV_OK) 6319 search_loclist_at(re, ret_die, lowpc, la_list, 6320 la_list_len, la_list_cap); 6321 6322 /* Search sibling. */ 6323 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 6324 if (ret == DW_DLV_ERROR) 6325 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 6326 else if (ret == DW_DLV_OK) 6327 search_loclist_at(re, ret_die, lowpc, la_list, 6328 la_list_len, la_list_cap); 6329 } 6330 6331 static void 6332 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr) 6333 { 6334 const char *op_str; 6335 char unk_op[32]; 6336 uint8_t *b, n; 6337 int i; 6338 6339 if (dwarf_get_OP_name(lr->lr_atom, &op_str) != 6340 DW_DLV_OK) { 6341 snprintf(unk_op, sizeof(unk_op), 6342 "[Unknown OP: %#x]", lr->lr_atom); 6343 op_str = unk_op; 6344 } 6345 6346 printf("%s", op_str); 6347 6348 switch (lr->lr_atom) { 6349 case DW_OP_reg0: 6350 case DW_OP_reg1: 6351 case DW_OP_reg2: 6352 case DW_OP_reg3: 6353 case DW_OP_reg4: 6354 case DW_OP_reg5: 6355 case DW_OP_reg6: 6356 case DW_OP_reg7: 6357 case DW_OP_reg8: 6358 case DW_OP_reg9: 6359 case DW_OP_reg10: 6360 case DW_OP_reg11: 6361 case DW_OP_reg12: 6362 case DW_OP_reg13: 6363 case DW_OP_reg14: 6364 case DW_OP_reg15: 6365 case DW_OP_reg16: 6366 case DW_OP_reg17: 6367 case DW_OP_reg18: 6368 case DW_OP_reg19: 6369 case DW_OP_reg20: 6370 case DW_OP_reg21: 6371 case DW_OP_reg22: 6372 case DW_OP_reg23: 6373 case DW_OP_reg24: 6374 case DW_OP_reg25: 6375 case DW_OP_reg26: 6376 case DW_OP_reg27: 6377 case DW_OP_reg28: 6378 case DW_OP_reg29: 6379 case DW_OP_reg30: 6380 case DW_OP_reg31: 6381 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0)); 6382 break; 6383 6384 case DW_OP_deref: 6385 case DW_OP_lit0: 6386 case DW_OP_lit1: 6387 case DW_OP_lit2: 6388 case DW_OP_lit3: 6389 case DW_OP_lit4: 6390 case DW_OP_lit5: 6391 case DW_OP_lit6: 6392 case DW_OP_lit7: 6393 case DW_OP_lit8: 6394 case DW_OP_lit9: 6395 case DW_OP_lit10: 6396 case DW_OP_lit11: 6397 case DW_OP_lit12: 6398 case DW_OP_lit13: 6399 case DW_OP_lit14: 6400 case DW_OP_lit15: 6401 case DW_OP_lit16: 6402 case DW_OP_lit17: 6403 case DW_OP_lit18: 6404 case DW_OP_lit19: 6405 case DW_OP_lit20: 6406 case DW_OP_lit21: 6407 case DW_OP_lit22: 6408 case DW_OP_lit23: 6409 case DW_OP_lit24: 6410 case DW_OP_lit25: 6411 case DW_OP_lit26: 6412 case DW_OP_lit27: 6413 case DW_OP_lit28: 6414 case DW_OP_lit29: 6415 case DW_OP_lit30: 6416 case DW_OP_lit31: 6417 case DW_OP_dup: 6418 case DW_OP_drop: 6419 case DW_OP_over: 6420 case DW_OP_swap: 6421 case DW_OP_rot: 6422 case DW_OP_xderef: 6423 case DW_OP_abs: 6424 case DW_OP_and: 6425 case DW_OP_div: 6426 case DW_OP_minus: 6427 case DW_OP_mod: 6428 case DW_OP_mul: 6429 case DW_OP_neg: 6430 case DW_OP_not: 6431 case DW_OP_or: 6432 case DW_OP_plus: 6433 case DW_OP_shl: 6434 case DW_OP_shr: 6435 case DW_OP_shra: 6436 case DW_OP_xor: 6437 case DW_OP_eq: 6438 case DW_OP_ge: 6439 case DW_OP_gt: 6440 case DW_OP_le: 6441 case DW_OP_lt: 6442 case DW_OP_ne: 6443 case DW_OP_nop: 6444 case DW_OP_push_object_address: 6445 case DW_OP_form_tls_address: 6446 case DW_OP_call_frame_cfa: 6447 case DW_OP_stack_value: 6448 case DW_OP_GNU_push_tls_address: 6449 case DW_OP_GNU_uninit: 6450 break; 6451 6452 case DW_OP_const1u: 6453 case DW_OP_pick: 6454 case DW_OP_deref_size: 6455 case DW_OP_xderef_size: 6456 case DW_OP_const2u: 6457 case DW_OP_bra: 6458 case DW_OP_skip: 6459 case DW_OP_const4u: 6460 case DW_OP_const8u: 6461 case DW_OP_constu: 6462 case DW_OP_plus_uconst: 6463 case DW_OP_regx: 6464 case DW_OP_piece: 6465 printf(": %ju", (uintmax_t) 6466 lr->lr_number); 6467 break; 6468 6469 case DW_OP_const1s: 6470 case DW_OP_const2s: 6471 case DW_OP_const4s: 6472 case DW_OP_const8s: 6473 case DW_OP_consts: 6474 printf(": %jd", (intmax_t) 6475 lr->lr_number); 6476 break; 6477 6478 case DW_OP_breg0: 6479 case DW_OP_breg1: 6480 case DW_OP_breg2: 6481 case DW_OP_breg3: 6482 case DW_OP_breg4: 6483 case DW_OP_breg5: 6484 case DW_OP_breg6: 6485 case DW_OP_breg7: 6486 case DW_OP_breg8: 6487 case DW_OP_breg9: 6488 case DW_OP_breg10: 6489 case DW_OP_breg11: 6490 case DW_OP_breg12: 6491 case DW_OP_breg13: 6492 case DW_OP_breg14: 6493 case DW_OP_breg15: 6494 case DW_OP_breg16: 6495 case DW_OP_breg17: 6496 case DW_OP_breg18: 6497 case DW_OP_breg19: 6498 case DW_OP_breg20: 6499 case DW_OP_breg21: 6500 case DW_OP_breg22: 6501 case DW_OP_breg23: 6502 case DW_OP_breg24: 6503 case DW_OP_breg25: 6504 case DW_OP_breg26: 6505 case DW_OP_breg27: 6506 case DW_OP_breg28: 6507 case DW_OP_breg29: 6508 case DW_OP_breg30: 6509 case DW_OP_breg31: 6510 printf(" (%s): %jd", 6511 dwarf_regname(re, lr->lr_atom - DW_OP_breg0), 6512 (intmax_t) lr->lr_number); 6513 break; 6514 6515 case DW_OP_fbreg: 6516 printf(": %jd", (intmax_t) 6517 lr->lr_number); 6518 break; 6519 6520 case DW_OP_bregx: 6521 printf(": %ju (%s) %jd", 6522 (uintmax_t) lr->lr_number, 6523 dwarf_regname(re, (unsigned int) lr->lr_number), 6524 (intmax_t) lr->lr_number2); 6525 break; 6526 6527 case DW_OP_addr: 6528 case DW_OP_GNU_encoded_addr: 6529 printf(": %#jx", (uintmax_t) 6530 lr->lr_number); 6531 break; 6532 6533 case DW_OP_GNU_implicit_pointer: 6534 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number, 6535 (intmax_t) lr->lr_number2); 6536 break; 6537 6538 case DW_OP_implicit_value: 6539 printf(": %ju byte block:", (uintmax_t) lr->lr_number); 6540 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6541 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++) 6542 printf(" %x", b[i]); 6543 break; 6544 6545 case DW_OP_GNU_entry_value: 6546 printf(": ("); 6547 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2, 6548 lr->lr_number); 6549 putchar(')'); 6550 break; 6551 6552 case DW_OP_GNU_const_type: 6553 printf(": <0x%jx> ", (uintmax_t) lr->lr_number); 6554 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6555 n = *b; 6556 for (i = 1; (uint8_t) i < n; i++) 6557 printf(" %x", b[i]); 6558 break; 6559 6560 case DW_OP_GNU_regval_type: 6561 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number, 6562 dwarf_regname(re, (unsigned int) lr->lr_number), 6563 (uintmax_t) lr->lr_number2); 6564 break; 6565 6566 case DW_OP_GNU_convert: 6567 case DW_OP_GNU_deref_type: 6568 case DW_OP_GNU_parameter_ref: 6569 case DW_OP_GNU_reinterpret: 6570 printf(": <0x%jx>", (uintmax_t) lr->lr_number); 6571 break; 6572 6573 default: 6574 break; 6575 } 6576 } 6577 6578 static void 6579 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len) 6580 { 6581 Dwarf_Locdesc *llbuf; 6582 Dwarf_Signed lcnt; 6583 Dwarf_Error de; 6584 int i; 6585 6586 if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize, 6587 re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) { 6588 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de)); 6589 return; 6590 } 6591 6592 for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) { 6593 dump_dwarf_loc(re, &llbuf->ld_s[i]); 6594 if (i < llbuf->ld_cents - 1) 6595 printf("; "); 6596 } 6597 6598 dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK); 6599 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC); 6600 } 6601 6602 static void 6603 dump_dwarf_loclist(struct readelf *re) 6604 { 6605 Dwarf_Die die; 6606 Dwarf_Locdesc **llbuf; 6607 Dwarf_Unsigned lowpc; 6608 Dwarf_Signed lcnt; 6609 Dwarf_Half tag, version, pointer_size, off_size; 6610 Dwarf_Error de; 6611 struct loc_at *la_list, *left, *right, *la; 6612 size_t la_list_len, la_list_cap; 6613 unsigned int duplicates, k; 6614 int i, j, ret, has_content; 6615 6616 la_list_len = 0; 6617 la_list_cap = 200; 6618 if ((la_list = calloc(la_list_cap, sizeof(struct loc_at))) == NULL) 6619 errx(EXIT_FAILURE, "calloc failed"); 6620 /* Search .debug_info section. */ 6621 while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL, 6622 &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) { 6623 set_cu_context(re, pointer_size, off_size, version); 6624 die = NULL; 6625 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 6626 continue; 6627 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6628 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 6629 continue; 6630 } 6631 /* XXX: What about DW_TAG_partial_unit? */ 6632 lowpc = 0; 6633 if (tag == DW_TAG_compile_unit) { 6634 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6635 &lowpc, &de) != DW_DLV_OK) 6636 lowpc = 0; 6637 } 6638 6639 /* Search attributes for reference to .debug_loc section. */ 6640 search_loclist_at(re, die, lowpc, &la_list, 6641 &la_list_len, &la_list_cap); 6642 } 6643 if (ret == DW_DLV_ERROR) 6644 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6645 6646 /* Search .debug_types section. */ 6647 do { 6648 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL, 6649 &version, NULL, &pointer_size, &off_size, NULL, NULL, 6650 NULL, NULL, &de)) == DW_DLV_OK) { 6651 set_cu_context(re, pointer_size, off_size, version); 6652 die = NULL; 6653 if (dwarf_siblingof(re->dbg, die, &die, &de) != 6654 DW_DLV_OK) 6655 continue; 6656 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6657 warnx("dwarf_tag failed: %s", 6658 dwarf_errmsg(de)); 6659 continue; 6660 } 6661 6662 lowpc = 0; 6663 if (tag == DW_TAG_type_unit) { 6664 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6665 &lowpc, &de) != DW_DLV_OK) 6666 lowpc = 0; 6667 } 6668 6669 /* 6670 * Search attributes for reference to .debug_loc 6671 * section. 6672 */ 6673 search_loclist_at(re, die, lowpc, &la_list, 6674 &la_list_len, &la_list_cap); 6675 } 6676 if (ret == DW_DLV_ERROR) 6677 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6678 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 6679 6680 if (la_list_len == 0) { 6681 free(la_list); 6682 return; 6683 } 6684 6685 /* Sort la_list using loc_at_comparator. */ 6686 qsort(la_list, la_list_len, sizeof(struct loc_at), loc_at_comparator); 6687 6688 /* Get rid of the duplicates in la_list. */ 6689 duplicates = 0; 6690 for (k = 1; k < la_list_len; ++k) { 6691 left = &la_list[k - 1 - duplicates]; 6692 right = &la_list[k]; 6693 6694 if (left->la_off == right->la_off) 6695 duplicates++; 6696 else 6697 la_list[k - duplicates] = *right; 6698 } 6699 la_list_len -= duplicates; 6700 6701 has_content = 0; 6702 for (k = 0; k < la_list_len; ++k) { 6703 la = &la_list[k]; 6704 if ((ret = dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de)) != 6705 DW_DLV_OK) { 6706 if (ret != DW_DLV_NO_ENTRY) 6707 warnx("dwarf_loclist_n failed: %s", 6708 dwarf_errmsg(de)); 6709 continue; 6710 } 6711 if (!has_content) { 6712 has_content = 1; 6713 printf("\nContents of section .debug_loc:\n"); 6714 printf(" Offset Begin End Expression\n"); 6715 } 6716 set_cu_context(re, la->la_cu_psize, la->la_cu_osize, 6717 la->la_cu_ver); 6718 for (i = 0; i < lcnt; i++) { 6719 printf(" %8.8jx ", (uintmax_t) la->la_off); 6720 if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) { 6721 printf("<End of list>\n"); 6722 continue; 6723 } 6724 6725 /* TODO: handle base selection entry. */ 6726 6727 printf("%8.8jx %8.8jx ", 6728 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc), 6729 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc)); 6730 6731 putchar('('); 6732 for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) { 6733 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]); 6734 if (j < llbuf[i]->ld_cents - 1) 6735 printf("; "); 6736 } 6737 putchar(')'); 6738 6739 if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc) 6740 printf(" (start == end)"); 6741 putchar('\n'); 6742 } 6743 for (i = 0; i < lcnt; i++) { 6744 dwarf_dealloc(re->dbg, llbuf[i]->ld_s, 6745 DW_DLA_LOC_BLOCK); 6746 dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC); 6747 } 6748 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST); 6749 } 6750 6751 if (!has_content) 6752 printf("\nSection '.debug_loc' has no debugging data.\n"); 6753 6754 free(la_list); 6755 } 6756 6757 /* 6758 * Retrieve a string using string table section index and the string offset. 6759 */ 6760 static const char* 6761 get_string(struct readelf *re, int strtab, size_t off) 6762 { 6763 const char *name; 6764 6765 if ((name = elf_strptr(re->elf, strtab, off)) == NULL) 6766 return (""); 6767 6768 return (name); 6769 } 6770 6771 /* 6772 * Retrieve the name of a symbol using the section index of the symbol 6773 * table and the index of the symbol within that table. 6774 */ 6775 static const char * 6776 get_symbol_name(struct readelf *re, int symtab, int i) 6777 { 6778 struct section *s; 6779 const char *name; 6780 GElf_Sym sym; 6781 Elf_Data *data; 6782 int elferr; 6783 6784 s = &re->sl[symtab]; 6785 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6786 return (""); 6787 (void) elf_errno(); 6788 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6789 elferr = elf_errno(); 6790 if (elferr != 0) 6791 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6792 return (""); 6793 } 6794 if (gelf_getsym(data, i, &sym) != &sym) 6795 return (""); 6796 /* Return section name for STT_SECTION symbol. */ 6797 if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) { 6798 if (sym.st_shndx < re->shnum && 6799 re->sl[sym.st_shndx].name != NULL) 6800 return (re->sl[sym.st_shndx].name); 6801 return (""); 6802 } 6803 if (s->link >= re->shnum || 6804 (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL) 6805 return (""); 6806 6807 return (name); 6808 } 6809 6810 static uint64_t 6811 get_symbol_value(struct readelf *re, int symtab, int i) 6812 { 6813 struct section *s; 6814 GElf_Sym sym; 6815 Elf_Data *data; 6816 int elferr; 6817 6818 s = &re->sl[symtab]; 6819 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6820 return (0); 6821 (void) elf_errno(); 6822 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6823 elferr = elf_errno(); 6824 if (elferr != 0) 6825 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6826 return (0); 6827 } 6828 if (gelf_getsym(data, i, &sym) != &sym) 6829 return (0); 6830 6831 return (sym.st_value); 6832 } 6833 6834 static void 6835 hex_dump(struct readelf *re) 6836 { 6837 struct section *s; 6838 Elf_Data *d; 6839 uint8_t *buf; 6840 size_t sz, nbytes; 6841 uint64_t addr; 6842 int elferr, i, j; 6843 6844 for (i = 1; (size_t) i < re->shnum; i++) { 6845 s = &re->sl[i]; 6846 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL) 6847 continue; 6848 (void) elf_errno(); 6849 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6850 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6851 elferr = elf_errno(); 6852 if (elferr != 0) 6853 warnx("elf_getdata failed: %s", 6854 elf_errmsg(elferr)); 6855 continue; 6856 } 6857 (void) elf_errno(); 6858 if (d->d_size <= 0 || d->d_buf == NULL) { 6859 printf("\nSection '%s' has no data to dump.\n", 6860 s->name); 6861 continue; 6862 } 6863 buf = d->d_buf; 6864 sz = d->d_size; 6865 addr = s->addr; 6866 printf("\nHex dump of section '%s':\n", s->name); 6867 while (sz > 0) { 6868 printf(" 0x%8.8jx ", (uintmax_t)addr); 6869 nbytes = sz > 16? 16 : sz; 6870 for (j = 0; j < 16; j++) { 6871 if ((size_t)j < nbytes) 6872 printf("%2.2x", buf[j]); 6873 else 6874 printf(" "); 6875 if ((j & 3) == 3) 6876 printf(" "); 6877 } 6878 for (j = 0; (size_t)j < nbytes; j++) { 6879 if (isprint(buf[j])) 6880 printf("%c", buf[j]); 6881 else 6882 printf("."); 6883 } 6884 printf("\n"); 6885 buf += nbytes; 6886 addr += nbytes; 6887 sz -= nbytes; 6888 } 6889 } 6890 } 6891 6892 static void 6893 str_dump(struct readelf *re) 6894 { 6895 struct section *s; 6896 Elf_Data *d; 6897 unsigned char *start, *end, *buf_end; 6898 unsigned int len; 6899 int i, j, elferr, found; 6900 6901 for (i = 1; (size_t) i < re->shnum; i++) { 6902 s = &re->sl[i]; 6903 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL) 6904 continue; 6905 (void) elf_errno(); 6906 if ((d = elf_getdata(s->scn, NULL)) == NULL && 6907 (d = elf_rawdata(s->scn, NULL)) == NULL) { 6908 elferr = elf_errno(); 6909 if (elferr != 0) 6910 warnx("elf_getdata failed: %s", 6911 elf_errmsg(elferr)); 6912 continue; 6913 } 6914 (void) elf_errno(); 6915 if (d->d_size <= 0 || d->d_buf == NULL) { 6916 printf("\nSection '%s' has no data to dump.\n", 6917 s->name); 6918 continue; 6919 } 6920 buf_end = (unsigned char *) d->d_buf + d->d_size; 6921 start = (unsigned char *) d->d_buf; 6922 found = 0; 6923 printf("\nString dump of section '%s':\n", s->name); 6924 for (;;) { 6925 while (start < buf_end && !isprint(*start)) 6926 start++; 6927 if (start >= buf_end) 6928 break; 6929 end = start + 1; 6930 while (end < buf_end && isprint(*end)) 6931 end++; 6932 printf(" [%6lx] ", 6933 (long) (start - (unsigned char *) d->d_buf)); 6934 len = end - start; 6935 for (j = 0; (unsigned int) j < len; j++) 6936 putchar(start[j]); 6937 putchar('\n'); 6938 found = 1; 6939 if (end >= buf_end) 6940 break; 6941 start = end + 1; 6942 } 6943 if (!found) 6944 printf(" No strings found in this section."); 6945 putchar('\n'); 6946 } 6947 } 6948 6949 static void 6950 load_sections(struct readelf *re) 6951 { 6952 struct section *s; 6953 const char *name; 6954 Elf_Scn *scn; 6955 GElf_Shdr sh; 6956 size_t shstrndx, ndx; 6957 int elferr; 6958 6959 /* Allocate storage for internal section list. */ 6960 if (!elf_getshnum(re->elf, &re->shnum)) { 6961 warnx("elf_getshnum failed: %s", elf_errmsg(-1)); 6962 return; 6963 } 6964 if (re->sl != NULL) 6965 free(re->sl); 6966 if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL) 6967 err(EXIT_FAILURE, "calloc failed"); 6968 6969 /* Get the index of .shstrtab section. */ 6970 if (!elf_getshstrndx(re->elf, &shstrndx)) { 6971 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1)); 6972 return; 6973 } 6974 6975 if ((scn = elf_getscn(re->elf, 0)) == NULL) 6976 return; 6977 6978 (void) elf_errno(); 6979 do { 6980 if (gelf_getshdr(scn, &sh) == NULL) { 6981 warnx("gelf_getshdr failed: %s", elf_errmsg(-1)); 6982 (void) elf_errno(); 6983 continue; 6984 } 6985 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) { 6986 (void) elf_errno(); 6987 name = "<no-name>"; 6988 } 6989 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) { 6990 if ((elferr = elf_errno()) != 0) { 6991 warnx("elf_ndxscn failed: %s", 6992 elf_errmsg(elferr)); 6993 continue; 6994 } 6995 } 6996 if (ndx >= re->shnum) { 6997 warnx("section index of '%s' out of range", name); 6998 continue; 6999 } 7000 if (sh.sh_link >= re->shnum) 7001 warnx("section link %llu of '%s' out of range", 7002 (unsigned long long)sh.sh_link, name); 7003 s = &re->sl[ndx]; 7004 s->name = name; 7005 s->scn = scn; 7006 s->off = sh.sh_offset; 7007 s->sz = sh.sh_size; 7008 s->entsize = sh.sh_entsize; 7009 s->align = sh.sh_addralign; 7010 s->type = sh.sh_type; 7011 s->flags = sh.sh_flags; 7012 s->addr = sh.sh_addr; 7013 s->link = sh.sh_link; 7014 s->info = sh.sh_info; 7015 } while ((scn = elf_nextscn(re->elf, scn)) != NULL); 7016 elferr = elf_errno(); 7017 if (elferr != 0) 7018 warnx("elf_nextscn failed: %s", elf_errmsg(elferr)); 7019 } 7020 7021 static void 7022 unload_sections(struct readelf *re) 7023 { 7024 7025 if (re->sl != NULL) { 7026 free(re->sl); 7027 re->sl = NULL; 7028 } 7029 re->shnum = 0; 7030 re->vd_s = NULL; 7031 re->vn_s = NULL; 7032 re->vs_s = NULL; 7033 re->vs = NULL; 7034 re->vs_sz = 0; 7035 if (re->ver != NULL) { 7036 free(re->ver); 7037 re->ver = NULL; 7038 re->ver_sz = 0; 7039 } 7040 } 7041 7042 static void 7043 dump_elf(struct readelf *re) 7044 { 7045 7046 /* Fetch ELF header. No need to continue if it fails. */ 7047 if (gelf_getehdr(re->elf, &re->ehdr) == NULL) { 7048 warnx("gelf_getehdr failed: %s", elf_errmsg(-1)); 7049 return; 7050 } 7051 if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) { 7052 warnx("gelf_getclass failed: %s", elf_errmsg(-1)); 7053 return; 7054 } 7055 if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) { 7056 re->dw_read = _read_msb; 7057 re->dw_decode = _decode_msb; 7058 } else { 7059 re->dw_read = _read_lsb; 7060 re->dw_decode = _decode_lsb; 7061 } 7062 7063 if (re->options & ~RE_H) 7064 load_sections(re); 7065 if ((re->options & RE_VV) || (re->options & RE_S)) 7066 search_ver(re); 7067 if (re->options & RE_H) 7068 dump_ehdr(re); 7069 if (re->options & RE_L) 7070 dump_phdr(re); 7071 if (re->options & RE_SS) 7072 dump_shdr(re); 7073 if (re->options & RE_G) 7074 dump_section_groups(re); 7075 if (re->options & RE_D) 7076 dump_dynamic(re); 7077 if (re->options & RE_R) 7078 dump_reloc(re); 7079 if (re->options & RE_S) 7080 dump_symtabs(re); 7081 if (re->options & RE_N) 7082 dump_notes(re); 7083 if (re->options & RE_II) 7084 dump_hash(re); 7085 if (re->options & RE_X) 7086 hex_dump(re); 7087 if (re->options & RE_P) 7088 str_dump(re); 7089 if (re->options & RE_VV) 7090 dump_ver(re); 7091 if (re->options & RE_AA) 7092 dump_arch_specific_info(re); 7093 if (re->options & RE_W) 7094 dump_dwarf(re); 7095 if (re->options & ~RE_H) 7096 unload_sections(re); 7097 } 7098 7099 static void 7100 dump_dwarf(struct readelf *re) 7101 { 7102 Dwarf_Error de; 7103 int error; 7104 7105 if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) { 7106 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL) 7107 errx(EXIT_FAILURE, "dwarf_elf_init failed: %s", 7108 dwarf_errmsg(de)); 7109 return; 7110 } 7111 7112 if (re->dop & DW_A) 7113 dump_dwarf_abbrev(re); 7114 if (re->dop & DW_L) 7115 dump_dwarf_line(re); 7116 if (re->dop & DW_LL) 7117 dump_dwarf_line_decoded(re); 7118 if (re->dop & DW_I) { 7119 dump_dwarf_info(re, 0); 7120 dump_dwarf_info(re, 1); 7121 } 7122 if (re->dop & DW_P) 7123 dump_dwarf_pubnames(re); 7124 if (re->dop & DW_R) 7125 dump_dwarf_aranges(re); 7126 if (re->dop & DW_RR) 7127 dump_dwarf_ranges(re); 7128 if (re->dop & DW_M) 7129 dump_dwarf_macinfo(re); 7130 if (re->dop & DW_F) 7131 dump_dwarf_frame(re, 0); 7132 else if (re->dop & DW_FF) 7133 dump_dwarf_frame(re, 1); 7134 if (re->dop & DW_S) 7135 dump_dwarf_str(re); 7136 if (re->dop & DW_O) 7137 dump_dwarf_loclist(re); 7138 7139 dwarf_finish(re->dbg, &de); 7140 } 7141 7142 static void 7143 dump_ar(struct readelf *re, int fd) 7144 { 7145 Elf_Arsym *arsym; 7146 Elf_Arhdr *arhdr; 7147 Elf_Cmd cmd; 7148 Elf *e; 7149 size_t sz; 7150 off_t off; 7151 int i; 7152 7153 re->ar = re->elf; 7154 7155 if (re->options & RE_C) { 7156 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) { 7157 warnx("elf_getarsym() failed: %s", elf_errmsg(-1)); 7158 goto process_members; 7159 } 7160 printf("Index of archive %s: (%ju entries)\n", re->filename, 7161 (uintmax_t) sz - 1); 7162 off = 0; 7163 for (i = 0; (size_t) i < sz; i++) { 7164 if (arsym[i].as_name == NULL) 7165 break; 7166 if (arsym[i].as_off != off) { 7167 off = arsym[i].as_off; 7168 if (elf_rand(re->ar, off) != off) { 7169 warnx("elf_rand() failed: %s", 7170 elf_errmsg(-1)); 7171 continue; 7172 } 7173 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) == 7174 NULL) { 7175 warnx("elf_begin() failed: %s", 7176 elf_errmsg(-1)); 7177 continue; 7178 } 7179 if ((arhdr = elf_getarhdr(e)) == NULL) { 7180 warnx("elf_getarhdr() failed: %s", 7181 elf_errmsg(-1)); 7182 elf_end(e); 7183 continue; 7184 } 7185 printf("Binary %s(%s) contains:\n", 7186 re->filename, arhdr->ar_name); 7187 } 7188 printf("\t%s\n", arsym[i].as_name); 7189 } 7190 if (elf_rand(re->ar, SARMAG) != SARMAG) { 7191 warnx("elf_rand() failed: %s", elf_errmsg(-1)); 7192 return; 7193 } 7194 } 7195 7196 process_members: 7197 7198 if ((re->options & ~RE_C) == 0) 7199 return; 7200 7201 cmd = ELF_C_READ; 7202 while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) { 7203 if ((arhdr = elf_getarhdr(re->elf)) == NULL) { 7204 warnx("elf_getarhdr() failed: %s", elf_errmsg(-1)); 7205 goto next_member; 7206 } 7207 if (strcmp(arhdr->ar_name, "/") == 0 || 7208 strcmp(arhdr->ar_name, "//") == 0 || 7209 strcmp(arhdr->ar_name, "__.SYMDEF") == 0) 7210 goto next_member; 7211 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name); 7212 dump_elf(re); 7213 7214 next_member: 7215 cmd = elf_next(re->elf); 7216 elf_end(re->elf); 7217 } 7218 re->elf = re->ar; 7219 } 7220 7221 static void 7222 dump_object(struct readelf *re, int fd) 7223 { 7224 if ((re->flags & DISPLAY_FILENAME) != 0) 7225 printf("\nFile: %s\n", re->filename); 7226 7227 if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { 7228 warnx("elf_begin() failed: %s", elf_errmsg(-1)); 7229 return; 7230 } 7231 7232 switch (elf_kind(re->elf)) { 7233 case ELF_K_NONE: 7234 warnx("Not an ELF file."); 7235 return; 7236 case ELF_K_ELF: 7237 dump_elf(re); 7238 break; 7239 case ELF_K_AR: 7240 dump_ar(re, fd); 7241 break; 7242 default: 7243 warnx("Internal: libelf returned unknown elf kind."); 7244 return; 7245 } 7246 7247 elf_end(re->elf); 7248 } 7249 7250 static void 7251 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7252 { 7253 struct dumpop *d; 7254 7255 if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) { 7256 if ((d = calloc(1, sizeof(*d))) == NULL) 7257 err(EXIT_FAILURE, "calloc failed"); 7258 if (t == DUMP_BY_INDEX) 7259 d->u.si = si; 7260 else 7261 d->u.sn = sn; 7262 d->type = t; 7263 d->op = op; 7264 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list); 7265 } else 7266 d->op |= op; 7267 } 7268 7269 static struct dumpop * 7270 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7271 { 7272 struct dumpop *d; 7273 7274 STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) { 7275 if ((op == -1 || op & d->op) && 7276 (t == -1 || (unsigned) t == d->type)) { 7277 if ((d->type == DUMP_BY_INDEX && d->u.si == si) || 7278 (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn))) 7279 return (d); 7280 } 7281 } 7282 7283 return (NULL); 7284 } 7285 7286 static struct { 7287 const char *ln; 7288 char sn; 7289 int value; 7290 } dwarf_op[] = { 7291 {"rawline", 'l', DW_L}, 7292 {"decodedline", 'L', DW_LL}, 7293 {"info", 'i', DW_I}, 7294 {"abbrev", 'a', DW_A}, 7295 {"pubnames", 'p', DW_P}, 7296 {"aranges", 'r', DW_R}, 7297 {"ranges", 'r', DW_R}, 7298 {"Ranges", 'R', DW_RR}, 7299 {"macro", 'm', DW_M}, 7300 {"frames", 'f', DW_F}, 7301 {"frames-interp", 'F', DW_FF}, 7302 {"str", 's', DW_S}, 7303 {"loc", 'o', DW_O}, 7304 {NULL, 0, 0} 7305 }; 7306 7307 static void 7308 parse_dwarf_op_short(struct readelf *re, const char *op) 7309 { 7310 int i; 7311 7312 if (op == NULL) { 7313 re->dop |= DW_DEFAULT_OPTIONS; 7314 return; 7315 } 7316 7317 for (; *op != '\0'; op++) { 7318 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7319 if (dwarf_op[i].sn == *op) { 7320 re->dop |= dwarf_op[i].value; 7321 break; 7322 } 7323 } 7324 } 7325 } 7326 7327 static void 7328 parse_dwarf_op_long(struct readelf *re, const char *op) 7329 { 7330 char *p, *token, *bp; 7331 int i; 7332 7333 if (op == NULL) { 7334 re->dop |= DW_DEFAULT_OPTIONS; 7335 return; 7336 } 7337 7338 if ((p = strdup(op)) == NULL) 7339 err(EXIT_FAILURE, "strdup failed"); 7340 bp = p; 7341 7342 while ((token = strsep(&p, ",")) != NULL) { 7343 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7344 if (!strcmp(token, dwarf_op[i].ln)) { 7345 re->dop |= dwarf_op[i].value; 7346 break; 7347 } 7348 } 7349 } 7350 7351 free(bp); 7352 } 7353 7354 static uint64_t 7355 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7356 { 7357 uint64_t ret; 7358 uint8_t *src; 7359 7360 src = (uint8_t *) d->d_buf + *offsetp; 7361 7362 ret = 0; 7363 switch (bytes_to_read) { 7364 case 8: 7365 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7366 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7367 /* FALLTHROUGH */ 7368 case 4: 7369 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7370 /* FALLTHROUGH */ 7371 case 2: 7372 ret |= ((uint64_t) src[1]) << 8; 7373 /* FALLTHROUGH */ 7374 case 1: 7375 ret |= src[0]; 7376 break; 7377 default: 7378 return (0); 7379 } 7380 7381 *offsetp += bytes_to_read; 7382 7383 return (ret); 7384 } 7385 7386 static uint64_t 7387 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7388 { 7389 uint64_t ret; 7390 uint8_t *src; 7391 7392 src = (uint8_t *) d->d_buf + *offsetp; 7393 7394 switch (bytes_to_read) { 7395 case 1: 7396 ret = src[0]; 7397 break; 7398 case 2: 7399 ret = src[1] | ((uint64_t) src[0]) << 8; 7400 break; 7401 case 4: 7402 ret = src[3] | ((uint64_t) src[2]) << 8; 7403 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7404 break; 7405 case 8: 7406 ret = src[7] | ((uint64_t) src[6]) << 8; 7407 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7408 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7409 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7410 break; 7411 default: 7412 return (0); 7413 } 7414 7415 *offsetp += bytes_to_read; 7416 7417 return (ret); 7418 } 7419 7420 static uint64_t 7421 _decode_lsb(uint8_t **data, int bytes_to_read) 7422 { 7423 uint64_t ret; 7424 uint8_t *src; 7425 7426 src = *data; 7427 7428 ret = 0; 7429 switch (bytes_to_read) { 7430 case 8: 7431 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7432 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7433 /* FALLTHROUGH */ 7434 case 4: 7435 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7436 /* FALLTHROUGH */ 7437 case 2: 7438 ret |= ((uint64_t) src[1]) << 8; 7439 /* FALLTHROUGH */ 7440 case 1: 7441 ret |= src[0]; 7442 break; 7443 default: 7444 return (0); 7445 } 7446 7447 *data += bytes_to_read; 7448 7449 return (ret); 7450 } 7451 7452 static uint64_t 7453 _decode_msb(uint8_t **data, int bytes_to_read) 7454 { 7455 uint64_t ret; 7456 uint8_t *src; 7457 7458 src = *data; 7459 7460 ret = 0; 7461 switch (bytes_to_read) { 7462 case 1: 7463 ret = src[0]; 7464 break; 7465 case 2: 7466 ret = src[1] | ((uint64_t) src[0]) << 8; 7467 break; 7468 case 4: 7469 ret = src[3] | ((uint64_t) src[2]) << 8; 7470 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7471 break; 7472 case 8: 7473 ret = src[7] | ((uint64_t) src[6]) << 8; 7474 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7475 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7476 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7477 break; 7478 default: 7479 return (0); 7480 break; 7481 } 7482 7483 *data += bytes_to_read; 7484 7485 return (ret); 7486 } 7487 7488 static int64_t 7489 _decode_sleb128(uint8_t **dp, uint8_t *dpe) 7490 { 7491 int64_t ret = 0; 7492 uint8_t b = 0; 7493 int shift = 0; 7494 7495 uint8_t *src = *dp; 7496 7497 do { 7498 if (src >= dpe) 7499 break; 7500 b = *src++; 7501 ret |= ((b & 0x7f) << shift); 7502 shift += 7; 7503 } while ((b & 0x80) != 0); 7504 7505 if (shift < 32 && (b & 0x40) != 0) 7506 ret |= (-1 << shift); 7507 7508 *dp = src; 7509 7510 return (ret); 7511 } 7512 7513 static uint64_t 7514 _decode_uleb128(uint8_t **dp, uint8_t *dpe) 7515 { 7516 uint64_t ret = 0; 7517 uint8_t b; 7518 int shift = 0; 7519 7520 uint8_t *src = *dp; 7521 7522 do { 7523 if (src >= dpe) 7524 break; 7525 b = *src++; 7526 ret |= ((b & 0x7f) << shift); 7527 shift += 7; 7528 } while ((b & 0x80) != 0); 7529 7530 *dp = src; 7531 7532 return (ret); 7533 } 7534 7535 static void 7536 readelf_version(void) 7537 { 7538 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), 7539 elftc_version()); 7540 exit(EXIT_SUCCESS); 7541 } 7542 7543 #define USAGE_MESSAGE "\ 7544 Usage: %s [options] file...\n\ 7545 Display information about ELF objects and ar(1) archives.\n\n\ 7546 Options:\n\ 7547 -a | --all Equivalent to specifying options '-dhIlrsASV'.\n\ 7548 -c | --archive-index Print the archive symbol table for archives.\n\ 7549 -d | --dynamic Print the contents of SHT_DYNAMIC sections.\n\ 7550 -e | --headers Print all headers in the object.\n\ 7551 -g | --section-groups Print the contents of the section groups.\n\ 7552 -h | --file-header Print the file header for the object.\n\ 7553 -l | --program-headers Print the PHDR table for the object.\n\ 7554 -n | --notes Print the contents of SHT_NOTE sections.\n\ 7555 -p INDEX | --string-dump=INDEX\n\ 7556 Print the contents of section at index INDEX.\n\ 7557 -r | --relocs Print relocation information.\n\ 7558 -s | --syms | --symbols Print symbol tables.\n\ 7559 -t | --section-details Print additional information about sections.\n\ 7560 -v | --version Print a version identifier and exit.\n\ 7561 -w[afilmoprsFLR] | --debug-dump={abbrev,aranges,decodedline,frames,\n\ 7562 frames-interp,info,loc,macro,pubnames,\n\ 7563 ranges,Ranges,rawline,str}\n\ 7564 Display DWARF information.\n\ 7565 -x INDEX | --hex-dump=INDEX\n\ 7566 Display contents of a section as hexadecimal.\n\ 7567 -A | --arch-specific (accepted, but ignored)\n\ 7568 -D | --use-dynamic Print the symbol table specified by the DT_SYMTAB\n\ 7569 entry in the \".dynamic\" section.\n\ 7570 -H | --help Print a help message.\n\ 7571 -I | --histogram Print information on bucket list lengths for \n\ 7572 hash sections.\n\ 7573 -N | --full-section-name (accepted, but ignored)\n\ 7574 -S | --sections | --section-headers\n\ 7575 Print information about section headers.\n\ 7576 -V | --version-info Print symbol versoning information.\n\ 7577 -W | --wide Print information without wrapping long lines.\n" 7578 7579 7580 static void 7581 readelf_usage(int status) 7582 { 7583 fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME()); 7584 exit(status); 7585 } 7586 7587 int 7588 main(int argc, char **argv) 7589 { 7590 cap_rights_t rights; 7591 fileargs_t *fa; 7592 struct readelf *re, re_storage; 7593 unsigned long si; 7594 int fd, opt, i; 7595 char *ep; 7596 7597 re = &re_storage; 7598 memset(re, 0, sizeof(*re)); 7599 STAILQ_INIT(&re->v_dumpop); 7600 7601 while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:", 7602 longopts, NULL)) != -1) { 7603 switch(opt) { 7604 case '?': 7605 readelf_usage(EXIT_SUCCESS); 7606 break; 7607 case 'A': 7608 re->options |= RE_AA; 7609 break; 7610 case 'a': 7611 re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II | 7612 RE_L | RE_R | RE_SS | RE_S | RE_VV; 7613 break; 7614 case 'c': 7615 re->options |= RE_C; 7616 break; 7617 case 'D': 7618 re->options |= RE_DD; 7619 break; 7620 case 'd': 7621 re->options |= RE_D; 7622 break; 7623 case 'e': 7624 re->options |= RE_H | RE_L | RE_SS; 7625 break; 7626 case 'g': 7627 re->options |= RE_G; 7628 break; 7629 case 'H': 7630 readelf_usage(EXIT_SUCCESS); 7631 break; 7632 case 'h': 7633 re->options |= RE_H; 7634 break; 7635 case 'I': 7636 re->options |= RE_II; 7637 break; 7638 case 'i': 7639 /* Not implemented yet. */ 7640 break; 7641 case 'l': 7642 re->options |= RE_L; 7643 break; 7644 case 'N': 7645 re->options |= RE_NN; 7646 break; 7647 case 'n': 7648 re->options |= RE_N; 7649 break; 7650 case 'p': 7651 re->options |= RE_P; 7652 si = strtoul(optarg, &ep, 10); 7653 if (*ep == '\0') 7654 add_dumpop(re, (size_t) si, NULL, STR_DUMP, 7655 DUMP_BY_INDEX); 7656 else 7657 add_dumpop(re, 0, optarg, STR_DUMP, 7658 DUMP_BY_NAME); 7659 break; 7660 case 'r': 7661 re->options |= RE_R; 7662 break; 7663 case 'S': 7664 re->options |= RE_SS; 7665 break; 7666 case 's': 7667 re->options |= RE_S; 7668 break; 7669 case 't': 7670 re->options |= RE_SS | RE_T; 7671 break; 7672 case 'u': 7673 re->options |= RE_U; 7674 break; 7675 case 'V': 7676 re->options |= RE_VV; 7677 break; 7678 case 'v': 7679 readelf_version(); 7680 break; 7681 case 'W': 7682 re->options |= RE_WW; 7683 break; 7684 case 'w': 7685 re->options |= RE_W; 7686 parse_dwarf_op_short(re, optarg); 7687 break; 7688 case 'x': 7689 re->options |= RE_X; 7690 si = strtoul(optarg, &ep, 10); 7691 if (*ep == '\0') 7692 add_dumpop(re, (size_t) si, NULL, HEX_DUMP, 7693 DUMP_BY_INDEX); 7694 else 7695 add_dumpop(re, 0, optarg, HEX_DUMP, 7696 DUMP_BY_NAME); 7697 break; 7698 case OPTION_DEBUG_DUMP: 7699 re->options |= RE_W; 7700 parse_dwarf_op_long(re, optarg); 7701 } 7702 } 7703 7704 argv += optind; 7705 argc -= optind; 7706 7707 if (argc == 0 || re->options == 0) 7708 readelf_usage(EXIT_FAILURE); 7709 7710 if (argc > 1) 7711 re->flags |= DISPLAY_FILENAME; 7712 7713 if (elf_version(EV_CURRENT) == EV_NONE) 7714 errx(EXIT_FAILURE, "ELF library initialization failed: %s", 7715 elf_errmsg(-1)); 7716 7717 cap_rights_init(&rights, CAP_FCNTL, CAP_FSTAT, CAP_MMAP_R, CAP_SEEK); 7718 fa = fileargs_init(argc, argv, O_RDONLY, 0, &rights, FA_OPEN); 7719 if (fa == NULL) 7720 err(1, "Unable to initialize casper fileargs"); 7721 7722 caph_cache_catpages(); 7723 if (caph_limit_stdio() < 0) { 7724 fileargs_free(fa); 7725 err(1, "Unable to limit stdio rights"); 7726 } 7727 if (caph_enter_casper() < 0) { 7728 fileargs_free(fa); 7729 err(1, "Unable to enter capability mode"); 7730 } 7731 7732 for (i = 0; i < argc; i++) { 7733 re->filename = argv[i]; 7734 fd = fileargs_open(fa, re->filename); 7735 if (fd < 0) { 7736 warn("open %s failed", re->filename); 7737 } else { 7738 dump_object(re, fd); 7739 close(fd); 7740 } 7741 } 7742 7743 exit(EXIT_SUCCESS); 7744 } 7745