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