1 /*- 2 * Copyright (c) 2009-2015 Kai Wang 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/param.h> 28 #include <sys/queue.h> 29 30 #include <ar.h> 31 #include <assert.h> 32 #include <capsicum_helpers.h> 33 #include <ctype.h> 34 #include <dwarf.h> 35 #include <err.h> 36 #include <fcntl.h> 37 #include <gelf.h> 38 #include <getopt.h> 39 #include <libdwarf.h> 40 #include <libelftc.h> 41 #include <libgen.h> 42 #include <stdarg.h> 43 #include <stdbool.h> 44 #include <stdint.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <time.h> 49 #include <unistd.h> 50 #include <zlib.h> 51 52 #include <libcasper.h> 53 #include <casper/cap_fileargs.h> 54 55 #include "_elftc.h" 56 57 ELFTC_VCSID("$Id: readelf.c 3769 2019-06-29 15:15:02Z emaste $"); 58 59 /* Backwards compatability for older FreeBSD releases. */ 60 #ifndef STB_GNU_UNIQUE 61 #define STB_GNU_UNIQUE 10 62 #endif 63 #ifndef STT_SPARC_REGISTER 64 #define STT_SPARC_REGISTER 13 65 #endif 66 67 68 /* 69 * readelf(1) options. 70 */ 71 #define RE_AA 0x00000001 72 #define RE_C 0x00000002 73 #define RE_DD 0x00000004 74 #define RE_D 0x00000008 75 #define RE_G 0x00000010 76 #define RE_H 0x00000020 77 #define RE_II 0x00000040 78 #define RE_I 0x00000080 79 #define RE_L 0x00000100 80 #define RE_NN 0x00000200 81 #define RE_N 0x00000400 82 #define RE_P 0x00000800 83 #define RE_R 0x00001000 84 #define RE_SS 0x00002000 85 #define RE_S 0x00004000 86 #define RE_T 0x00008000 87 #define RE_U 0x00010000 88 #define RE_VV 0x00020000 89 #define RE_WW 0x00040000 90 #define RE_W 0x00080000 91 #define RE_X 0x00100000 92 #define RE_Z 0x00200000 93 94 /* 95 * dwarf dump options. 96 */ 97 #define DW_A 0x00000001 98 #define DW_FF 0x00000002 99 #define DW_F 0x00000004 100 #define DW_I 0x00000008 101 #define DW_LL 0x00000010 102 #define DW_L 0x00000020 103 #define DW_M 0x00000040 104 #define DW_O 0x00000080 105 #define DW_P 0x00000100 106 #define DW_RR 0x00000200 107 #define DW_R 0x00000400 108 #define DW_S 0x00000800 109 110 #define DW_DEFAULT_OPTIONS (DW_A | DW_F | DW_I | DW_L | DW_O | DW_P | \ 111 DW_R | DW_RR | DW_S) 112 113 /* 114 * readelf(1) run control flags. 115 */ 116 #define DISPLAY_FILENAME 0x0001 117 118 /* 119 * Internal data structure for sections. 120 */ 121 struct section { 122 const char *name; /* section name */ 123 Elf_Scn *scn; /* section scn */ 124 uint64_t off; /* section offset */ 125 uint64_t sz; /* section size */ 126 uint64_t entsize; /* section entsize */ 127 uint64_t align; /* section alignment */ 128 uint64_t type; /* section type */ 129 uint64_t flags; /* section flags */ 130 uint64_t addr; /* section virtual addr */ 131 uint32_t link; /* section link ndx */ 132 uint32_t info; /* section info ndx */ 133 }; 134 135 struct dumpop { 136 union { 137 size_t si; /* section index */ 138 const char *sn; /* section name */ 139 } u; 140 enum { 141 DUMP_BY_INDEX = 0, 142 DUMP_BY_NAME 143 } type; /* dump type */ 144 #define HEX_DUMP 0x0001 145 #define STR_DUMP 0x0002 146 int op; /* dump operation */ 147 STAILQ_ENTRY(dumpop) dumpop_list; 148 }; 149 150 struct symver { 151 const char *name; 152 int type; 153 }; 154 155 /* 156 * Structure encapsulates the global data for readelf(1). 157 */ 158 struct readelf { 159 const char *filename; /* current processing file. */ 160 int options; /* command line options. */ 161 int flags; /* run control flags. */ 162 int dop; /* dwarf dump options. */ 163 Elf *elf; /* underlying ELF descriptor. */ 164 Elf *ar; /* archive ELF descriptor. */ 165 Dwarf_Debug dbg; /* DWARF handle. */ 166 Dwarf_Half cu_psize; /* DWARF CU pointer size. */ 167 Dwarf_Half cu_osize; /* DWARF CU offset size. */ 168 Dwarf_Half cu_ver; /* DWARF CU version. */ 169 GElf_Ehdr ehdr; /* ELF header. */ 170 int ec; /* ELF class. */ 171 size_t shnum; /* #sections. */ 172 struct section *vd_s; /* Verdef section. */ 173 struct section *vn_s; /* Verneed section. */ 174 struct section *vs_s; /* Versym section. */ 175 uint16_t *vs; /* Versym array. */ 176 int vs_sz; /* Versym array size. */ 177 struct symver *ver; /* Version array. */ 178 int ver_sz; /* Size of version array. */ 179 struct section *sl; /* list of sections. */ 180 STAILQ_HEAD(, dumpop) v_dumpop; /* list of dump ops. */ 181 uint64_t (*dw_read)(Elf_Data *, uint64_t *, int); 182 uint64_t (*dw_decode)(uint8_t **, int); 183 }; 184 185 enum options 186 { 187 OPTION_DEBUG_DUMP 188 }; 189 190 static struct option longopts[] = { 191 {"all", no_argument, NULL, 'a'}, 192 {"arch-specific", no_argument, NULL, 'A'}, 193 {"archive-index", no_argument, NULL, 'c'}, 194 {"debug-dump", optional_argument, NULL, OPTION_DEBUG_DUMP}, 195 {"decompress", no_argument, 0, 'z'}, 196 {"dynamic", no_argument, NULL, 'd'}, 197 {"file-header", no_argument, NULL, 'h'}, 198 {"full-section-name", no_argument, NULL, 'N'}, 199 {"headers", no_argument, NULL, 'e'}, 200 {"help", no_argument, 0, 'H'}, 201 {"hex-dump", required_argument, NULL, 'x'}, 202 {"histogram", no_argument, NULL, 'I'}, 203 {"notes", no_argument, NULL, 'n'}, 204 {"program-headers", no_argument, NULL, 'l'}, 205 {"relocs", no_argument, NULL, 'r'}, 206 {"sections", no_argument, NULL, 'S'}, 207 {"section-headers", no_argument, NULL, 'S'}, 208 {"section-groups", no_argument, NULL, 'g'}, 209 {"section-details", no_argument, NULL, 't'}, 210 {"segments", no_argument, NULL, 'l'}, 211 {"string-dump", required_argument, NULL, 'p'}, 212 {"symbols", no_argument, NULL, 's'}, 213 {"syms", no_argument, NULL, 's'}, 214 {"unwind", no_argument, NULL, 'u'}, 215 {"use-dynamic", no_argument, NULL, 'D'}, 216 {"version-info", no_argument, 0, 'V'}, 217 {"version", no_argument, 0, 'v'}, 218 {"wide", no_argument, 0, 'W'}, 219 {NULL, 0, NULL, 0} 220 }; 221 222 struct eflags_desc { 223 uint64_t flag; 224 const char *desc; 225 }; 226 227 struct flag_desc { 228 uint64_t flag; 229 const char *desc; 230 }; 231 232 struct flag_desc_list { 233 uint32_t type; 234 const char *desc_str; 235 struct flag_desc *desc; 236 }; 237 238 struct mips_option { 239 uint64_t flag; 240 const char *desc; 241 }; 242 243 struct loc_at { 244 Dwarf_Attribute la_at; 245 Dwarf_Unsigned la_off; 246 Dwarf_Unsigned la_lowpc; 247 Dwarf_Half la_cu_psize; 248 Dwarf_Half la_cu_osize; 249 Dwarf_Half la_cu_ver; 250 }; 251 252 static void add_dumpop(struct readelf *re, size_t si, const char *sn, int op, 253 int t); 254 static const char *aeabi_adv_simd_arch(uint64_t simd); 255 static const char *aeabi_align_needed(uint64_t an); 256 static const char *aeabi_align_preserved(uint64_t ap); 257 static const char *aeabi_arm_isa(uint64_t ai); 258 static const char *aeabi_cpu_arch(uint64_t arch); 259 static const char *aeabi_cpu_arch_profile(uint64_t pf); 260 static const char *aeabi_div(uint64_t du); 261 static const char *aeabi_enum_size(uint64_t es); 262 static const char *aeabi_fp_16bit_format(uint64_t fp16); 263 static const char *aeabi_fp_arch(uint64_t fp); 264 static const char *aeabi_fp_denormal(uint64_t fd); 265 static const char *aeabi_fp_exceptions(uint64_t fe); 266 static const char *aeabi_fp_hpext(uint64_t fh); 267 static const char *aeabi_fp_number_model(uint64_t fn); 268 static const char *aeabi_fp_optm_goal(uint64_t fog); 269 static const char *aeabi_fp_rounding(uint64_t fr); 270 static const char *aeabi_hardfp(uint64_t hfp); 271 static const char *aeabi_mpext(uint64_t mp); 272 static const char *aeabi_optm_goal(uint64_t og); 273 static const char *aeabi_pcs_config(uint64_t pcs); 274 static const char *aeabi_pcs_got(uint64_t got); 275 static const char *aeabi_pcs_r9(uint64_t r9); 276 static const char *aeabi_pcs_ro(uint64_t ro); 277 static const char *aeabi_pcs_rw(uint64_t rw); 278 static const char *aeabi_pcs_wchar_t(uint64_t wt); 279 static const char *aeabi_t2ee(uint64_t t2ee); 280 static const char *aeabi_thumb_isa(uint64_t ti); 281 static const char *aeabi_fp_user_exceptions(uint64_t fu); 282 static const char *aeabi_unaligned_access(uint64_t ua); 283 static const char *aeabi_vfp_args(uint64_t va); 284 static const char *aeabi_virtual(uint64_t vt); 285 static const char *aeabi_wmmx_arch(uint64_t wmmx); 286 static const char *aeabi_wmmx_args(uint64_t wa); 287 static const char *elf_class(unsigned int class); 288 static const char *elf_endian(unsigned int endian); 289 static const char *elf_machine(unsigned int mach); 290 static const char *elf_osabi(unsigned int abi); 291 static const char *elf_type(unsigned int type); 292 static const char *elf_ver(unsigned int ver); 293 static const char *dt_type(unsigned int mach, unsigned int dtype); 294 static bool dump_ar(struct readelf *re, int); 295 static void dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 296 static void dump_attributes(struct readelf *re); 297 static uint8_t *dump_compatibility_tag(uint8_t *p, uint8_t *pe); 298 static void dump_dwarf(struct readelf *re); 299 static void dump_dwarf_abbrev(struct readelf *re); 300 static void dump_dwarf_aranges(struct readelf *re); 301 static void dump_dwarf_block(struct readelf *re, uint8_t *b, 302 Dwarf_Unsigned len); 303 static void dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level); 304 static void dump_dwarf_frame(struct readelf *re, int alt); 305 static void dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, 306 uint8_t *insts, Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, 307 Dwarf_Addr pc, Dwarf_Debug dbg); 308 static int dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, 309 Dwarf_Addr pc, Dwarf_Unsigned func_len, Dwarf_Half cie_ra); 310 static void dump_dwarf_frame_section(struct readelf *re, struct section *s, 311 int alt); 312 static void dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info); 313 static void dump_dwarf_macinfo(struct readelf *re); 314 static void dump_dwarf_line(struct readelf *re); 315 static void dump_dwarf_line_decoded(struct readelf *re); 316 static void dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr); 317 static void dump_dwarf_loclist(struct readelf *re); 318 static void dump_dwarf_pubnames(struct readelf *re); 319 static void dump_dwarf_ranges(struct readelf *re); 320 static void dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, 321 Dwarf_Addr base); 322 static void dump_dwarf_str(struct readelf *re); 323 static void dump_eflags(struct readelf *re, uint64_t e_flags); 324 static bool dump_elf(struct readelf *re); 325 static void dump_flags(struct flag_desc *fd, uint64_t flags); 326 static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab); 327 static void dump_dynamic(struct readelf *re); 328 static void dump_liblist(struct readelf *re); 329 static void dump_mips_abiflags(struct readelf *re, struct section *s); 330 static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); 331 static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz); 332 static void dump_mips_options(struct readelf *re, struct section *s); 333 static void dump_mips_option_flags(const char *name, struct mips_option *opt, 334 uint64_t info); 335 static void dump_mips_reginfo(struct readelf *re, struct section *s); 336 static void dump_mips_specific_info(struct readelf *re); 337 static void dump_notes(struct readelf *re); 338 static void dump_notes_content(struct readelf *re, const char *buf, size_t sz, 339 off_t off); 340 static void dump_notes_data(struct readelf *re, const char *name, 341 uint32_t type, const char *buf, size_t sz); 342 static void dump_svr4_hash(struct section *s); 343 static void dump_svr4_hash64(struct readelf *re, struct section *s); 344 static void dump_gnu_hash(struct readelf *re, struct section *s); 345 static void dump_gnu_property_type_0(struct readelf *re, const char *buf, 346 size_t sz); 347 static void dump_hash(struct readelf *re); 348 static void dump_phdr(struct readelf *re); 349 static void dump_ppc_attributes(uint8_t *p, uint8_t *pe); 350 static void dump_section_groups(struct readelf *re); 351 static void dump_symtab(struct readelf *re, int i); 352 static void dump_symtabs(struct readelf *re); 353 static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe); 354 static void dump_ver(struct readelf *re); 355 static void dump_verdef(struct readelf *re, int dump); 356 static void dump_verneed(struct readelf *re, int dump); 357 static void dump_versym(struct readelf *re); 358 static const char *dwarf_reg(unsigned int mach, unsigned int reg); 359 static const char *dwarf_regname(struct readelf *re, unsigned int num); 360 static struct dumpop *find_dumpop(struct readelf *re, size_t si, 361 const char *sn, int op, int t); 362 static int get_ent_count(struct section *s, int *ent_count); 363 static int get_mips_register_size(uint8_t flag); 364 static char *get_regoff_str(struct readelf *re, Dwarf_Half reg, 365 Dwarf_Addr off); 366 static const char *get_string(struct readelf *re, int strtab, size_t off); 367 static const char *get_symbol_name(struct readelf *re, int symtab, int i); 368 static uint64_t get_symbol_value(struct readelf *re, int symtab, int i); 369 static void load_sections(struct readelf *re); 370 static int loc_at_comparator(const void *la1, const void *la2); 371 static const char *mips_abi_fp(uint64_t fp); 372 static const char *note_type(const char *note_name, unsigned int et, 373 unsigned int nt); 374 static const char *note_type_freebsd(unsigned int nt); 375 static const char *note_type_freebsd_core(unsigned int nt); 376 static const char *note_type_go(unsigned int nt); 377 static const char *note_type_gnu(unsigned int nt); 378 static const char *note_type_linux_core(unsigned int nt); 379 static const char *note_type_netbsd(unsigned int nt); 380 static const char *note_type_openbsd(unsigned int nt); 381 static const char *note_type_unknown(unsigned int nt); 382 static const char *note_type_xen(unsigned int nt); 383 static const char *option_kind(uint8_t kind); 384 static const char *phdr_type(unsigned int mach, unsigned int ptype); 385 static const char *ppc_abi_fp(uint64_t fp); 386 static const char *ppc_abi_vector(uint64_t vec); 387 static void readelf_usage(int status); 388 static void readelf_version(void); 389 static void search_loclist_at(struct readelf *re, Dwarf_Die die, 390 Dwarf_Unsigned lowpc, struct loc_at **la_list, 391 size_t *la_list_len, size_t *la_list_cap); 392 static void search_ver(struct readelf *re); 393 static const char *section_type(unsigned int mach, unsigned int stype); 394 static void set_cu_context(struct readelf *re, Dwarf_Half psize, 395 Dwarf_Half osize, Dwarf_Half ver); 396 static const char *st_bind(unsigned int sbind); 397 static const char *st_shndx(unsigned int shndx); 398 static const char *st_type(unsigned int mach, unsigned int os, 399 unsigned int stype); 400 static const char *st_vis(unsigned int svis); 401 static const char *top_tag(unsigned int tag); 402 static void unload_sections(struct readelf *re); 403 static uint64_t _read_lsb(Elf_Data *d, uint64_t *offsetp, 404 int bytes_to_read); 405 static uint64_t _read_msb(Elf_Data *d, uint64_t *offsetp, 406 int bytes_to_read); 407 static uint64_t _decode_lsb(uint8_t **data, int bytes_to_read); 408 static uint64_t _decode_msb(uint8_t **data, int bytes_to_read); 409 static int64_t _decode_sleb128(uint8_t **dp, uint8_t *dpe); 410 static uint64_t _decode_uleb128(uint8_t **dp, uint8_t *dpe); 411 412 static struct eflags_desc arm_eflags_desc[] = { 413 {EF_ARM_RELEXEC, "relocatable executable"}, 414 {EF_ARM_HASENTRY, "has entry point"}, 415 {EF_ARM_SYMSARESORTED, "sorted symbol tables"}, 416 {EF_ARM_DYNSYMSUSESEGIDX, "dynamic symbols use segment index"}, 417 {EF_ARM_MAPSYMSFIRST, "mapping symbols precede others"}, 418 {EF_ARM_BE8, "BE8"}, 419 {EF_ARM_LE8, "LE8"}, 420 {EF_ARM_INTERWORK, "interworking enabled"}, 421 {EF_ARM_APCS_26, "uses APCS/26"}, 422 {EF_ARM_APCS_FLOAT, "uses APCS/float"}, 423 {EF_ARM_PIC, "position independent"}, 424 {EF_ARM_ALIGN8, "8 bit structure alignment"}, 425 {EF_ARM_NEW_ABI, "uses new ABI"}, 426 {EF_ARM_OLD_ABI, "uses old ABI"}, 427 {EF_ARM_SOFT_FLOAT, "software FP"}, 428 {EF_ARM_VFP_FLOAT, "VFP"}, 429 {EF_ARM_MAVERICK_FLOAT, "Maverick FP"}, 430 {0, NULL} 431 }; 432 433 static struct eflags_desc mips_eflags_desc[] = { 434 {EF_MIPS_NOREORDER, "noreorder"}, 435 {EF_MIPS_PIC, "pic"}, 436 {EF_MIPS_CPIC, "cpic"}, 437 {EF_MIPS_UCODE, "ugen_reserved"}, 438 {EF_MIPS_ABI2, "abi2"}, 439 {EF_MIPS_OPTIONS_FIRST, "odk first"}, 440 {EF_MIPS_ARCH_ASE_MDMX, "mdmx"}, 441 {EF_MIPS_ARCH_ASE_M16, "mips16"}, 442 {0, NULL} 443 }; 444 445 static struct eflags_desc powerpc_eflags_desc[] = { 446 {EF_PPC_EMB, "emb"}, 447 {EF_PPC_RELOCATABLE, "relocatable"}, 448 {EF_PPC_RELOCATABLE_LIB, "relocatable-lib"}, 449 {0, NULL} 450 }; 451 452 static struct eflags_desc riscv_eflags_desc[] = { 453 {EF_RISCV_RVC, "RVC"}, 454 {EF_RISCV_RVE, "RVE"}, 455 {EF_RISCV_TSO, "TSO"}, 456 {0, NULL} 457 }; 458 459 static struct eflags_desc sparc_eflags_desc[] = { 460 {EF_SPARC_32PLUS, "v8+"}, 461 {EF_SPARC_SUN_US1, "ultrasparcI"}, 462 {EF_SPARC_HAL_R1, "halr1"}, 463 {EF_SPARC_SUN_US3, "ultrasparcIII"}, 464 {0, NULL} 465 }; 466 467 static const char * 468 elf_osabi(unsigned int abi) 469 { 470 static char s_abi[32]; 471 472 switch(abi) { 473 case ELFOSABI_NONE: return "NONE"; 474 case ELFOSABI_HPUX: return "HPUX"; 475 case ELFOSABI_NETBSD: return "NetBSD"; 476 case ELFOSABI_GNU: return "GNU"; 477 case ELFOSABI_HURD: return "HURD"; 478 case ELFOSABI_86OPEN: return "86OPEN"; 479 case ELFOSABI_SOLARIS: return "Solaris"; 480 case ELFOSABI_AIX: return "AIX"; 481 case ELFOSABI_IRIX: return "IRIX"; 482 case ELFOSABI_FREEBSD: return "FreeBSD"; 483 case ELFOSABI_TRU64: return "TRU64"; 484 case ELFOSABI_MODESTO: return "MODESTO"; 485 case ELFOSABI_OPENBSD: return "OpenBSD"; 486 case ELFOSABI_OPENVMS: return "OpenVMS"; 487 case ELFOSABI_NSK: return "NSK"; 488 case ELFOSABI_CLOUDABI: return "CloudABI"; 489 case ELFOSABI_ARM_AEABI: return "ARM EABI"; 490 case ELFOSABI_ARM: return "ARM"; 491 case ELFOSABI_STANDALONE: return "StandAlone"; 492 default: 493 snprintf(s_abi, sizeof(s_abi), "<unknown: %#x>", abi); 494 return (s_abi); 495 } 496 }; 497 498 static const char * 499 elf_machine(unsigned int mach) 500 { 501 static char s_mach[32]; 502 503 switch (mach) { 504 case EM_NONE: return "Unknown machine"; 505 case EM_M32: return "AT&T WE32100"; 506 case EM_SPARC: return "Sun SPARC"; 507 case EM_386: return "Intel i386"; 508 case EM_68K: return "Motorola 68000"; 509 case EM_IAMCU: return "Intel MCU"; 510 case EM_88K: return "Motorola 88000"; 511 case EM_860: return "Intel i860"; 512 case EM_MIPS: return "MIPS R3000 Big-Endian only"; 513 case EM_S370: return "IBM System/370"; 514 case EM_MIPS_RS3_LE: return "MIPS R3000 Little-Endian"; 515 case EM_PARISC: return "HP PA-RISC"; 516 case EM_VPP500: return "Fujitsu VPP500"; 517 case EM_SPARC32PLUS: return "SPARC v8plus"; 518 case EM_960: return "Intel 80960"; 519 case EM_PPC: return "PowerPC 32-bit"; 520 case EM_PPC64: return "PowerPC 64-bit"; 521 case EM_S390: return "IBM System/390"; 522 case EM_V800: return "NEC V800"; 523 case EM_FR20: return "Fujitsu FR20"; 524 case EM_RH32: return "TRW RH-32"; 525 case EM_RCE: return "Motorola RCE"; 526 case EM_ARM: return "ARM"; 527 case EM_SH: return "Hitachi SH"; 528 case EM_SPARCV9: return "SPARC v9 64-bit"; 529 case EM_TRICORE: return "Siemens TriCore embedded processor"; 530 case EM_ARC: return "Argonaut RISC Core"; 531 case EM_H8_300: return "Hitachi H8/300"; 532 case EM_H8_300H: return "Hitachi H8/300H"; 533 case EM_H8S: return "Hitachi H8S"; 534 case EM_H8_500: return "Hitachi H8/500"; 535 case EM_IA_64: return "Intel IA-64 Processor"; 536 case EM_MIPS_X: return "Stanford MIPS-X"; 537 case EM_COLDFIRE: return "Motorola ColdFire"; 538 case EM_68HC12: return "Motorola M68HC12"; 539 case EM_MMA: return "Fujitsu MMA"; 540 case EM_PCP: return "Siemens PCP"; 541 case EM_NCPU: return "Sony nCPU"; 542 case EM_NDR1: return "Denso NDR1 microprocessor"; 543 case EM_STARCORE: return "Motorola Star*Core processor"; 544 case EM_ME16: return "Toyota ME16 processor"; 545 case EM_ST100: return "STMicroelectronics ST100 processor"; 546 case EM_TINYJ: return "Advanced Logic Corp. TinyJ processor"; 547 case EM_X86_64: return "Advanced Micro Devices x86-64"; 548 case EM_PDSP: return "Sony DSP Processor"; 549 case EM_FX66: return "Siemens FX66 microcontroller"; 550 case EM_ST9PLUS: return "STMicroelectronics ST9+ 8/16 microcontroller"; 551 case EM_ST7: return "STmicroelectronics ST7 8-bit microcontroller"; 552 case EM_68HC16: return "Motorola MC68HC16 microcontroller"; 553 case EM_68HC11: return "Motorola MC68HC11 microcontroller"; 554 case EM_68HC08: return "Motorola MC68HC08 microcontroller"; 555 case EM_68HC05: return "Motorola MC68HC05 microcontroller"; 556 case EM_SVX: return "Silicon Graphics SVx"; 557 case EM_ST19: return "STMicroelectronics ST19 8-bit mc"; 558 case EM_VAX: return "Digital VAX"; 559 case EM_CRIS: return "Axis Communications 32-bit embedded processor"; 560 case EM_JAVELIN: return "Infineon Tech. 32bit embedded processor"; 561 case EM_FIREPATH: return "Element 14 64-bit DSP Processor"; 562 case EM_ZSP: return "LSI Logic 16-bit DSP Processor"; 563 case EM_MMIX: return "Donald Knuth's educational 64-bit proc"; 564 case EM_HUANY: return "Harvard University MI object files"; 565 case EM_PRISM: return "SiTera Prism"; 566 case EM_AVR: return "Atmel AVR 8-bit microcontroller"; 567 case EM_FR30: return "Fujitsu FR30"; 568 case EM_D10V: return "Mitsubishi D10V"; 569 case EM_D30V: return "Mitsubishi D30V"; 570 case EM_V850: return "NEC v850"; 571 case EM_M32R: return "Mitsubishi M32R"; 572 case EM_MN10300: return "Matsushita MN10300"; 573 case EM_MN10200: return "Matsushita MN10200"; 574 case EM_PJ: return "picoJava"; 575 case EM_OPENRISC: return "OpenRISC 32-bit embedded processor"; 576 case EM_ARC_A5: return "ARC Cores Tangent-A5"; 577 case EM_XTENSA: return "Tensilica Xtensa Architecture"; 578 case EM_VIDEOCORE: return "Alphamosaic VideoCore processor"; 579 case EM_TMM_GPP: return "Thompson Multimedia General Purpose Processor"; 580 case EM_NS32K: return "National Semiconductor 32000 series"; 581 case EM_TPC: return "Tenor Network TPC processor"; 582 case EM_SNP1K: return "Trebia SNP 1000 processor"; 583 case EM_ST200: return "STMicroelectronics ST200 microcontroller"; 584 case EM_IP2K: return "Ubicom IP2xxx microcontroller family"; 585 case EM_MAX: return "MAX Processor"; 586 case EM_CR: return "National Semiconductor CompactRISC microprocessor"; 587 case EM_F2MC16: return "Fujitsu F2MC16"; 588 case EM_MSP430: return "TI embedded microcontroller msp430"; 589 case EM_BLACKFIN: return "Analog Devices Blackfin (DSP) processor"; 590 case EM_SE_C33: return "S1C33 Family of Seiko Epson processors"; 591 case EM_SEP: return "Sharp embedded microprocessor"; 592 case EM_ARCA: return "Arca RISC Microprocessor"; 593 case EM_UNICORE: return "Microprocessor series from PKU-Unity Ltd"; 594 case EM_AARCH64: return "AArch64"; 595 case EM_RISCV: return "RISC-V"; 596 default: 597 snprintf(s_mach, sizeof(s_mach), "<unknown: %#x>", mach); 598 return (s_mach); 599 } 600 601 } 602 603 static const char * 604 elf_class(unsigned int class) 605 { 606 static char s_class[32]; 607 608 switch (class) { 609 case ELFCLASSNONE: return "none"; 610 case ELFCLASS32: return "ELF32"; 611 case ELFCLASS64: return "ELF64"; 612 default: 613 snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class); 614 return (s_class); 615 } 616 } 617 618 static const char * 619 elf_endian(unsigned int endian) 620 { 621 static char s_endian[32]; 622 623 switch (endian) { 624 case ELFDATANONE: return "none"; 625 case ELFDATA2LSB: return "2's complement, little endian"; 626 case ELFDATA2MSB: return "2's complement, big endian"; 627 default: 628 snprintf(s_endian, sizeof(s_endian), "<unknown: %#x>", endian); 629 return (s_endian); 630 } 631 } 632 633 static const char * 634 elf_type(unsigned int type) 635 { 636 static char s_type[32]; 637 638 switch (type) { 639 case ET_NONE: return "NONE (None)"; 640 case ET_REL: return "REL (Relocatable file)"; 641 case ET_EXEC: return "EXEC (Executable file)"; 642 case ET_DYN: return "DYN (Shared object file)"; 643 case ET_CORE: return "CORE (Core file)"; 644 default: 645 if (type >= ET_LOPROC) 646 snprintf(s_type, sizeof(s_type), "<proc: %#x>", type); 647 else if (type >= ET_LOOS && type <= ET_HIOS) 648 snprintf(s_type, sizeof(s_type), "<os: %#x>", type); 649 else 650 snprintf(s_type, sizeof(s_type), "<unknown: %#x>", 651 type); 652 return (s_type); 653 } 654 } 655 656 static const char * 657 elf_ver(unsigned int ver) 658 { 659 static char s_ver[32]; 660 661 switch (ver) { 662 case EV_CURRENT: return "(current)"; 663 case EV_NONE: return "(none)"; 664 default: 665 snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>", 666 ver); 667 return (s_ver); 668 } 669 } 670 671 static const char * 672 phdr_type(unsigned int mach, unsigned int ptype) 673 { 674 static char s_ptype[32]; 675 676 if (ptype >= PT_LOPROC && ptype <= PT_HIPROC) { 677 switch (mach) { 678 case EM_ARM: 679 switch (ptype) { 680 case PT_ARM_ARCHEXT: return "ARM_ARCHEXT"; 681 case PT_ARM_EXIDX: return "ARM_EXIDX"; 682 } 683 break; 684 } 685 snprintf(s_ptype, sizeof(s_ptype), "LOPROC+%#x", 686 ptype - PT_LOPROC); 687 return (s_ptype); 688 } 689 690 switch (ptype) { 691 case PT_NULL: return "NULL"; 692 case PT_LOAD: return "LOAD"; 693 case PT_DYNAMIC: return "DYNAMIC"; 694 case PT_INTERP: return "INTERP"; 695 case PT_NOTE: return "NOTE"; 696 case PT_SHLIB: return "SHLIB"; 697 case PT_PHDR: return "PHDR"; 698 case PT_TLS: return "TLS"; 699 case PT_GNU_EH_FRAME: return "GNU_EH_FRAME"; 700 case PT_GNU_STACK: return "GNU_STACK"; 701 case PT_GNU_RELRO: return "GNU_RELRO"; 702 case PT_OPENBSD_RANDOMIZE: return "OPENBSD_RANDOMIZE"; 703 case PT_OPENBSD_WXNEEDED: return "OPENBSD_WXNEEDED"; 704 case PT_OPENBSD_BOOTDATA: return "OPENBSD_BOOTDATA"; 705 default: 706 if (ptype >= PT_LOOS && ptype <= PT_HIOS) 707 snprintf(s_ptype, sizeof(s_ptype), "LOOS+%#x", 708 ptype - PT_LOOS); 709 else 710 snprintf(s_ptype, sizeof(s_ptype), "<unknown: %#x>", 711 ptype); 712 return (s_ptype); 713 } 714 } 715 716 static const char * 717 section_type(unsigned int mach, unsigned int stype) 718 { 719 static char s_stype[32]; 720 721 if (stype >= SHT_LOPROC && stype <= SHT_HIPROC) { 722 switch (mach) { 723 case EM_ARM: 724 switch (stype) { 725 case SHT_ARM_EXIDX: return "ARM_EXIDX"; 726 case SHT_ARM_PREEMPTMAP: return "ARM_PREEMPTMAP"; 727 case SHT_ARM_ATTRIBUTES: return "ARM_ATTRIBUTES"; 728 case SHT_ARM_DEBUGOVERLAY: return "ARM_DEBUGOVERLAY"; 729 case SHT_ARM_OVERLAYSECTION: return "ARM_OVERLAYSECTION"; 730 } 731 break; 732 case EM_X86_64: 733 switch (stype) { 734 case SHT_X86_64_UNWIND: return "X86_64_UNWIND"; 735 default: 736 break; 737 } 738 break; 739 case EM_MIPS: 740 case EM_MIPS_RS3_LE: 741 switch (stype) { 742 case SHT_MIPS_LIBLIST: return "MIPS_LIBLIST"; 743 case SHT_MIPS_MSYM: return "MIPS_MSYM"; 744 case SHT_MIPS_CONFLICT: return "MIPS_CONFLICT"; 745 case SHT_MIPS_GPTAB: return "MIPS_GPTAB"; 746 case SHT_MIPS_UCODE: return "MIPS_UCODE"; 747 case SHT_MIPS_DEBUG: return "MIPS_DEBUG"; 748 case SHT_MIPS_REGINFO: return "MIPS_REGINFO"; 749 case SHT_MIPS_PACKAGE: return "MIPS_PACKAGE"; 750 case SHT_MIPS_PACKSYM: return "MIPS_PACKSYM"; 751 case SHT_MIPS_RELD: return "MIPS_RELD"; 752 case SHT_MIPS_IFACE: return "MIPS_IFACE"; 753 case SHT_MIPS_CONTENT: return "MIPS_CONTENT"; 754 case SHT_MIPS_OPTIONS: return "MIPS_OPTIONS"; 755 case SHT_MIPS_DELTASYM: return "MIPS_DELTASYM"; 756 case SHT_MIPS_DELTAINST: return "MIPS_DELTAINST"; 757 case SHT_MIPS_DELTACLASS: return "MIPS_DELTACLASS"; 758 case SHT_MIPS_DWARF: return "MIPS_DWARF"; 759 case SHT_MIPS_DELTADECL: return "MIPS_DELTADECL"; 760 case SHT_MIPS_SYMBOL_LIB: return "MIPS_SYMBOL_LIB"; 761 case SHT_MIPS_EVENTS: return "MIPS_EVENTS"; 762 case SHT_MIPS_TRANSLATE: return "MIPS_TRANSLATE"; 763 case SHT_MIPS_PIXIE: return "MIPS_PIXIE"; 764 case SHT_MIPS_XLATE: return "MIPS_XLATE"; 765 case SHT_MIPS_XLATE_DEBUG: return "MIPS_XLATE_DEBUG"; 766 case SHT_MIPS_WHIRL: return "MIPS_WHIRL"; 767 case SHT_MIPS_EH_REGION: return "MIPS_EH_REGION"; 768 case SHT_MIPS_XLATE_OLD: return "MIPS_XLATE_OLD"; 769 case SHT_MIPS_PDR_EXCEPTION: return "MIPS_PDR_EXCEPTION"; 770 case SHT_MIPS_ABIFLAGS: return "MIPS_ABIFLAGS"; 771 default: 772 break; 773 } 774 break; 775 default: 776 break; 777 } 778 779 snprintf(s_stype, sizeof(s_stype), "LOPROC+%#x", 780 stype - SHT_LOPROC); 781 return (s_stype); 782 } 783 784 switch (stype) { 785 case SHT_NULL: return "NULL"; 786 case SHT_PROGBITS: return "PROGBITS"; 787 case SHT_SYMTAB: return "SYMTAB"; 788 case SHT_STRTAB: return "STRTAB"; 789 case SHT_RELA: return "RELA"; 790 case SHT_HASH: return "HASH"; 791 case SHT_DYNAMIC: return "DYNAMIC"; 792 case SHT_NOTE: return "NOTE"; 793 case SHT_NOBITS: return "NOBITS"; 794 case SHT_REL: return "REL"; 795 case SHT_SHLIB: return "SHLIB"; 796 case SHT_DYNSYM: return "DYNSYM"; 797 case SHT_INIT_ARRAY: return "INIT_ARRAY"; 798 case SHT_FINI_ARRAY: return "FINI_ARRAY"; 799 case SHT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 800 case SHT_GROUP: return "GROUP"; 801 case SHT_SYMTAB_SHNDX: return "SYMTAB_SHNDX"; 802 case SHT_SUNW_dof: return "SUNW_dof"; 803 case SHT_SUNW_cap: return "SUNW_cap"; 804 case SHT_GNU_HASH: return "GNU_HASH"; 805 case SHT_SUNW_ANNOTATE: return "SUNW_ANNOTATE"; 806 case SHT_SUNW_DEBUGSTR: return "SUNW_DEBUGSTR"; 807 case SHT_SUNW_DEBUG: return "SUNW_DEBUG"; 808 case SHT_SUNW_move: return "SUNW_move"; 809 case SHT_SUNW_COMDAT: return "SUNW_COMDAT"; 810 case SHT_SUNW_syminfo: return "SUNW_syminfo"; 811 case SHT_SUNW_verdef: return "SUNW_verdef"; 812 case SHT_SUNW_verneed: return "SUNW_verneed"; 813 case SHT_SUNW_versym: return "SUNW_versym"; 814 default: 815 if (stype >= SHT_LOOS && stype <= SHT_HIOS) 816 snprintf(s_stype, sizeof(s_stype), "LOOS+%#x", 817 stype - SHT_LOOS); 818 else if (stype >= SHT_LOUSER) 819 snprintf(s_stype, sizeof(s_stype), "LOUSER+%#x", 820 stype - SHT_LOUSER); 821 else 822 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 823 stype); 824 return (s_stype); 825 } 826 } 827 828 static const char * 829 dt_type(unsigned int mach, unsigned int dtype) 830 { 831 static char s_dtype[32]; 832 833 switch (dtype) { 834 case DT_NULL: return "NULL"; 835 case DT_NEEDED: return "NEEDED"; 836 case DT_PLTRELSZ: return "PLTRELSZ"; 837 case DT_PLTGOT: return "PLTGOT"; 838 case DT_HASH: return "HASH"; 839 case DT_STRTAB: return "STRTAB"; 840 case DT_SYMTAB: return "SYMTAB"; 841 case DT_RELA: return "RELA"; 842 case DT_RELASZ: return "RELASZ"; 843 case DT_RELAENT: return "RELAENT"; 844 case DT_STRSZ: return "STRSZ"; 845 case DT_SYMENT: return "SYMENT"; 846 case DT_INIT: return "INIT"; 847 case DT_FINI: return "FINI"; 848 case DT_SONAME: return "SONAME"; 849 case DT_RPATH: return "RPATH"; 850 case DT_SYMBOLIC: return "SYMBOLIC"; 851 case DT_REL: return "REL"; 852 case DT_RELSZ: return "RELSZ"; 853 case DT_RELENT: return "RELENT"; 854 case DT_PLTREL: return "PLTREL"; 855 case DT_DEBUG: return "DEBUG"; 856 case DT_TEXTREL: return "TEXTREL"; 857 case DT_JMPREL: return "JMPREL"; 858 case DT_BIND_NOW: return "BIND_NOW"; 859 case DT_INIT_ARRAY: return "INIT_ARRAY"; 860 case DT_FINI_ARRAY: return "FINI_ARRAY"; 861 case DT_INIT_ARRAYSZ: return "INIT_ARRAYSZ"; 862 case DT_FINI_ARRAYSZ: return "FINI_ARRAYSZ"; 863 case DT_RUNPATH: return "RUNPATH"; 864 case DT_FLAGS: return "FLAGS"; 865 case DT_PREINIT_ARRAY: return "PREINIT_ARRAY"; 866 case DT_PREINIT_ARRAYSZ: return "PREINIT_ARRAYSZ"; 867 case DT_MAXPOSTAGS: return "MAXPOSTAGS"; 868 case DT_SUNW_AUXILIARY: return "SUNW_AUXILIARY"; 869 case DT_SUNW_RTLDINF: return "SUNW_RTLDINF"; 870 case DT_SUNW_FILTER: return "SUNW_FILTER"; 871 case DT_SUNW_CAP: return "SUNW_CAP"; 872 case DT_SUNW_ASLR: return "SUNW_ASLR"; 873 case DT_CHECKSUM: return "CHECKSUM"; 874 case DT_PLTPADSZ: return "PLTPADSZ"; 875 case DT_MOVEENT: return "MOVEENT"; 876 case DT_MOVESZ: return "MOVESZ"; 877 case DT_FEATURE: return "FEATURE"; 878 case DT_POSFLAG_1: return "POSFLAG_1"; 879 case DT_SYMINSZ: return "SYMINSZ"; 880 case DT_SYMINENT: return "SYMINENT"; 881 case DT_GNU_HASH: return "GNU_HASH"; 882 case DT_TLSDESC_PLT: return "DT_TLSDESC_PLT"; 883 case DT_TLSDESC_GOT: return "DT_TLSDESC_GOT"; 884 case DT_GNU_CONFLICT: return "GNU_CONFLICT"; 885 case DT_GNU_LIBLIST: return "GNU_LIBLIST"; 886 case DT_CONFIG: return "CONFIG"; 887 case DT_DEPAUDIT: return "DEPAUDIT"; 888 case DT_AUDIT: return "AUDIT"; 889 case DT_PLTPAD: return "PLTPAD"; 890 case DT_MOVETAB: return "MOVETAB"; 891 case DT_SYMINFO: return "SYMINFO"; 892 case DT_VERSYM: return "VERSYM"; 893 case DT_RELACOUNT: return "RELACOUNT"; 894 case DT_RELCOUNT: return "RELCOUNT"; 895 case DT_FLAGS_1: return "FLAGS_1"; 896 case DT_VERDEF: return "VERDEF"; 897 case DT_VERDEFNUM: return "VERDEFNUM"; 898 case DT_VERNEED: return "VERNEED"; 899 case DT_VERNEEDNUM: return "VERNEEDNUM"; 900 case DT_AUXILIARY: return "AUXILIARY"; 901 case DT_USED: return "USED"; 902 case DT_FILTER: return "FILTER"; 903 case DT_GNU_PRELINKED: return "GNU_PRELINKED"; 904 case DT_GNU_CONFLICTSZ: return "GNU_CONFLICTSZ"; 905 case DT_GNU_LIBLISTSZ: return "GNU_LIBLISTSZ"; 906 } 907 908 if (dtype >= DT_LOPROC && dtype <= DT_HIPROC) { 909 switch (mach) { 910 case EM_ARM: 911 switch (dtype) { 912 case DT_ARM_SYMTABSZ: 913 return "ARM_SYMTABSZ"; 914 default: 915 break; 916 } 917 break; 918 case EM_MIPS: 919 case EM_MIPS_RS3_LE: 920 switch (dtype) { 921 case DT_MIPS_RLD_VERSION: 922 return "MIPS_RLD_VERSION"; 923 case DT_MIPS_TIME_STAMP: 924 return "MIPS_TIME_STAMP"; 925 case DT_MIPS_ICHECKSUM: 926 return "MIPS_ICHECKSUM"; 927 case DT_MIPS_IVERSION: 928 return "MIPS_IVERSION"; 929 case DT_MIPS_FLAGS: 930 return "MIPS_FLAGS"; 931 case DT_MIPS_BASE_ADDRESS: 932 return "MIPS_BASE_ADDRESS"; 933 case DT_MIPS_CONFLICT: 934 return "MIPS_CONFLICT"; 935 case DT_MIPS_LIBLIST: 936 return "MIPS_LIBLIST"; 937 case DT_MIPS_LOCAL_GOTNO: 938 return "MIPS_LOCAL_GOTNO"; 939 case DT_MIPS_CONFLICTNO: 940 return "MIPS_CONFLICTNO"; 941 case DT_MIPS_LIBLISTNO: 942 return "MIPS_LIBLISTNO"; 943 case DT_MIPS_SYMTABNO: 944 return "MIPS_SYMTABNO"; 945 case DT_MIPS_UNREFEXTNO: 946 return "MIPS_UNREFEXTNO"; 947 case DT_MIPS_GOTSYM: 948 return "MIPS_GOTSYM"; 949 case DT_MIPS_HIPAGENO: 950 return "MIPS_HIPAGENO"; 951 case DT_MIPS_RLD_MAP: 952 return "MIPS_RLD_MAP"; 953 case DT_MIPS_DELTA_CLASS: 954 return "MIPS_DELTA_CLASS"; 955 case DT_MIPS_DELTA_CLASS_NO: 956 return "MIPS_DELTA_CLASS_NO"; 957 case DT_MIPS_DELTA_INSTANCE: 958 return "MIPS_DELTA_INSTANCE"; 959 case DT_MIPS_DELTA_INSTANCE_NO: 960 return "MIPS_DELTA_INSTANCE_NO"; 961 case DT_MIPS_DELTA_RELOC: 962 return "MIPS_DELTA_RELOC"; 963 case DT_MIPS_DELTA_RELOC_NO: 964 return "MIPS_DELTA_RELOC_NO"; 965 case DT_MIPS_DELTA_SYM: 966 return "MIPS_DELTA_SYM"; 967 case DT_MIPS_DELTA_SYM_NO: 968 return "MIPS_DELTA_SYM_NO"; 969 case DT_MIPS_DELTA_CLASSSYM: 970 return "MIPS_DELTA_CLASSSYM"; 971 case DT_MIPS_DELTA_CLASSSYM_NO: 972 return "MIPS_DELTA_CLASSSYM_NO"; 973 case DT_MIPS_CXX_FLAGS: 974 return "MIPS_CXX_FLAGS"; 975 case DT_MIPS_PIXIE_INIT: 976 return "MIPS_PIXIE_INIT"; 977 case DT_MIPS_SYMBOL_LIB: 978 return "MIPS_SYMBOL_LIB"; 979 case DT_MIPS_LOCALPAGE_GOTIDX: 980 return "MIPS_LOCALPAGE_GOTIDX"; 981 case DT_MIPS_LOCAL_GOTIDX: 982 return "MIPS_LOCAL_GOTIDX"; 983 case DT_MIPS_HIDDEN_GOTIDX: 984 return "MIPS_HIDDEN_GOTIDX"; 985 case DT_MIPS_PROTECTED_GOTIDX: 986 return "MIPS_PROTECTED_GOTIDX"; 987 case DT_MIPS_OPTIONS: 988 return "MIPS_OPTIONS"; 989 case DT_MIPS_INTERFACE: 990 return "MIPS_INTERFACE"; 991 case DT_MIPS_DYNSTR_ALIGN: 992 return "MIPS_DYNSTR_ALIGN"; 993 case DT_MIPS_INTERFACE_SIZE: 994 return "MIPS_INTERFACE_SIZE"; 995 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 996 return "MIPS_RLD_TEXT_RESOLVE_ADDR"; 997 case DT_MIPS_PERF_SUFFIX: 998 return "MIPS_PERF_SUFFIX"; 999 case DT_MIPS_COMPACT_SIZE: 1000 return "MIPS_COMPACT_SIZE"; 1001 case DT_MIPS_GP_VALUE: 1002 return "MIPS_GP_VALUE"; 1003 case DT_MIPS_AUX_DYNAMIC: 1004 return "MIPS_AUX_DYNAMIC"; 1005 case DT_MIPS_PLTGOT: 1006 return "MIPS_PLTGOT"; 1007 case DT_MIPS_RLD_OBJ_UPDATE: 1008 return "MIPS_RLD_OBJ_UPDATE"; 1009 case DT_MIPS_RWPLT: 1010 return "MIPS_RWPLT"; 1011 default: 1012 break; 1013 } 1014 break; 1015 case EM_SPARC: 1016 case EM_SPARC32PLUS: 1017 case EM_SPARCV9: 1018 switch (dtype) { 1019 case DT_SPARC_REGISTER: 1020 return "DT_SPARC_REGISTER"; 1021 default: 1022 break; 1023 } 1024 break; 1025 default: 1026 break; 1027 } 1028 } 1029 1030 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype); 1031 return (s_dtype); 1032 } 1033 1034 static const char * 1035 st_bind(unsigned int sbind) 1036 { 1037 static char s_sbind[32]; 1038 1039 switch (sbind) { 1040 case STB_LOCAL: return "LOCAL"; 1041 case STB_GLOBAL: return "GLOBAL"; 1042 case STB_WEAK: return "WEAK"; 1043 case STB_GNU_UNIQUE: return "UNIQUE"; 1044 default: 1045 if (sbind >= STB_LOOS && sbind <= STB_HIOS) 1046 return "OS"; 1047 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC) 1048 return "PROC"; 1049 else 1050 snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>", 1051 sbind); 1052 return (s_sbind); 1053 } 1054 } 1055 1056 static const char * 1057 st_type(unsigned int mach, unsigned int os, unsigned int stype) 1058 { 1059 static char s_stype[32]; 1060 1061 switch (stype) { 1062 case STT_NOTYPE: return "NOTYPE"; 1063 case STT_OBJECT: return "OBJECT"; 1064 case STT_FUNC: return "FUNC"; 1065 case STT_SECTION: return "SECTION"; 1066 case STT_FILE: return "FILE"; 1067 case STT_COMMON: return "COMMON"; 1068 case STT_TLS: return "TLS"; 1069 default: 1070 if (stype >= STT_LOOS && stype <= STT_HIOS) { 1071 if ((os == ELFOSABI_GNU || os == ELFOSABI_FREEBSD) && 1072 stype == STT_GNU_IFUNC) 1073 return "IFUNC"; 1074 snprintf(s_stype, sizeof(s_stype), "OS+%#x", 1075 stype - STT_LOOS); 1076 } else if (stype >= STT_LOPROC && stype <= STT_HIPROC) { 1077 if (mach == EM_SPARCV9 && stype == STT_SPARC_REGISTER) 1078 return "REGISTER"; 1079 snprintf(s_stype, sizeof(s_stype), "PROC+%#x", 1080 stype - STT_LOPROC); 1081 } else 1082 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>", 1083 stype); 1084 return (s_stype); 1085 } 1086 } 1087 1088 static const char * 1089 st_vis(unsigned int svis) 1090 { 1091 static char s_svis[32]; 1092 1093 switch(svis) { 1094 case STV_DEFAULT: return "DEFAULT"; 1095 case STV_INTERNAL: return "INTERNAL"; 1096 case STV_HIDDEN: return "HIDDEN"; 1097 case STV_PROTECTED: return "PROTECTED"; 1098 default: 1099 snprintf(s_svis, sizeof(s_svis), "<unknown: %#x>", svis); 1100 return (s_svis); 1101 } 1102 } 1103 1104 static const char * 1105 st_shndx(unsigned int shndx) 1106 { 1107 static char s_shndx[32]; 1108 1109 switch (shndx) { 1110 case SHN_UNDEF: return "UND"; 1111 case SHN_ABS: return "ABS"; 1112 case SHN_COMMON: return "COM"; 1113 default: 1114 if (shndx >= SHN_LOPROC && shndx <= SHN_HIPROC) 1115 return "PRC"; 1116 else if (shndx >= SHN_LOOS && shndx <= SHN_HIOS) 1117 return "OS"; 1118 else 1119 snprintf(s_shndx, sizeof(s_shndx), "%u", shndx); 1120 return (s_shndx); 1121 } 1122 } 1123 1124 static struct { 1125 const char *ln; 1126 char sn; 1127 int value; 1128 } section_flag[] = { 1129 {"WRITE", 'W', SHF_WRITE}, 1130 {"ALLOC", 'A', SHF_ALLOC}, 1131 {"EXEC", 'X', SHF_EXECINSTR}, 1132 {"MERGE", 'M', SHF_MERGE}, 1133 {"STRINGS", 'S', SHF_STRINGS}, 1134 {"INFO LINK", 'I', SHF_INFO_LINK}, 1135 {"OS NONCONF", 'O', SHF_OS_NONCONFORMING}, 1136 {"GROUP", 'G', SHF_GROUP}, 1137 {"TLS", 'T', SHF_TLS}, 1138 {"COMPRESSED", 'C', SHF_COMPRESSED}, 1139 {NULL, 0, 0} 1140 }; 1141 1142 static const char * 1143 note_type(const char *name, unsigned int et, unsigned int nt) 1144 { 1145 if ((strcmp(name, "CORE") == 0 || strcmp(name, "LINUX") == 0) && 1146 et == ET_CORE) 1147 return note_type_linux_core(nt); 1148 else if (strcmp(name, "FreeBSD") == 0) 1149 if (et == ET_CORE) 1150 return note_type_freebsd_core(nt); 1151 else 1152 return note_type_freebsd(nt); 1153 else if (strcmp(name, "GNU") == 0 && et != ET_CORE) 1154 return note_type_gnu(nt); 1155 else if (strcmp(name, "Go") == 0 && et != ET_CORE) 1156 return note_type_go(nt); 1157 else if (strcmp(name, "NetBSD") == 0 && et != ET_CORE) 1158 return note_type_netbsd(nt); 1159 else if (strcmp(name, "OpenBSD") == 0 && et != ET_CORE) 1160 return note_type_openbsd(nt); 1161 else if (strcmp(name, "Xen") == 0 && et != ET_CORE) 1162 return note_type_xen(nt); 1163 return note_type_unknown(nt); 1164 } 1165 1166 static const char * 1167 note_type_freebsd(unsigned int nt) 1168 { 1169 switch (nt) { 1170 case 1: return "NT_FREEBSD_ABI_TAG"; 1171 case 2: return "NT_FREEBSD_NOINIT_TAG"; 1172 case 3: return "NT_FREEBSD_ARCH_TAG"; 1173 case 4: return "NT_FREEBSD_FEATURE_CTL"; 1174 default: return (note_type_unknown(nt)); 1175 } 1176 } 1177 1178 static const char * 1179 note_type_freebsd_core(unsigned int nt) 1180 { 1181 switch (nt) { 1182 case 1: return "NT_PRSTATUS"; 1183 case 2: return "NT_FPREGSET"; 1184 case 3: return "NT_PRPSINFO"; 1185 case 7: return "NT_THRMISC"; 1186 case 8: return "NT_PROCSTAT_PROC"; 1187 case 9: return "NT_PROCSTAT_FILES"; 1188 case 10: return "NT_PROCSTAT_VMMAP"; 1189 case 11: return "NT_PROCSTAT_GROUPS"; 1190 case 12: return "NT_PROCSTAT_UMASK"; 1191 case 13: return "NT_PROCSTAT_RLIMIT"; 1192 case 14: return "NT_PROCSTAT_OSREL"; 1193 case 15: return "NT_PROCSTAT_PSSTRINGS"; 1194 case 16: return "NT_PROCSTAT_AUXV"; 1195 case 17: return "NT_PTLWPINFO"; 1196 case 0x100: return "NT_PPC_VMX (ppc Altivec registers)"; 1197 case 0x102: return "NT_PPC_VSX (ppc VSX registers)"; 1198 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1199 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1200 case 0x406: return "NT_ARM_ADDR_MASK (arm address mask)"; 1201 default: return (note_type_unknown(nt)); 1202 } 1203 } 1204 1205 static const char * 1206 note_type_linux_core(unsigned int nt) 1207 { 1208 switch (nt) { 1209 case 1: return "NT_PRSTATUS (Process status)"; 1210 case 2: return "NT_FPREGSET (Floating point information)"; 1211 case 3: return "NT_PRPSINFO (Process information)"; 1212 case 4: return "NT_TASKSTRUCT (Task structure)"; 1213 case 6: return "NT_AUXV (Auxiliary vector)"; 1214 case 10: return "NT_PSTATUS (Linux process status)"; 1215 case 12: return "NT_FPREGS (Linux floating point regset)"; 1216 case 13: return "NT_PSINFO (Linux process information)"; 1217 case 16: return "NT_LWPSTATUS (Linux lwpstatus_t type)"; 1218 case 17: return "NT_LWPSINFO (Linux lwpinfo_t type)"; 1219 case 18: return "NT_WIN32PSTATUS (win32_pstatus structure)"; 1220 case 0x100: return "NT_PPC_VMX (ppc Altivec registers)"; 1221 case 0x102: return "NT_PPC_VSX (ppc VSX registers)"; 1222 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)"; 1223 case 0x300: return "NT_S390_HIGH_GPRS (s390 upper register halves)"; 1224 case 0x301: return "NT_S390_TIMER (s390 timer register)"; 1225 case 0x302: return "NT_S390_TODCMP (s390 TOD comparator register)"; 1226 case 0x303: return "NT_S390_TODPREG (s390 TOD programmable register)"; 1227 case 0x304: return "NT_S390_CTRS (s390 control registers)"; 1228 case 0x305: return "NT_S390_PREFIX (s390 prefix register)"; 1229 case 0x400: return "NT_ARM_VFP (arm VFP registers)"; 1230 case 0x401: return "NT_ARM_TLS (arm TLS register)"; 1231 case 0x402: return "NT_ARM_HW_BREAK (arm hardware breakpoint registers)"; 1232 case 0x403: return "NT_ARM_HW_WATCH (arm hardware watchpoint registers)"; 1233 case 0x404: return "NT_ARM_SYSTEM_CALL (arm system call number)"; 1234 case 0x405: return "NT_ARM_SVE (arm scalable vector extension registers)"; 1235 case 0x406: return "NT_ARM_PAC_MASK (arm pointer authentication code mask)"; 1236 case 0x407: return "NT_ARM_PACA_KEYS (arm pointer authentication address keys)"; 1237 case 0x408: return "NT_ARM_PACG_KEYS (arm pointer authentication generic keys)"; 1238 case 0x409: return "NT_ARM_TAGGED_ADDR_CTRL (arm64 tagged address control)"; 1239 case 0x40a: return "NT_ARM_PAC_ENABLED_KEYS (arm64 ptr auth enabled keys)"; 1240 case 0x46494c45UL: return "NT_FILE (mapped files)"; 1241 case 0x46E62B7FUL: return "NT_PRXFPREG (Linux user_xfpregs structure)"; 1242 case 0x53494749UL: return "NT_SIGINFO (siginfo_t data)"; 1243 default: return (note_type_unknown(nt)); 1244 } 1245 } 1246 1247 static const char * 1248 note_type_gnu(unsigned int nt) 1249 { 1250 switch (nt) { 1251 case 1: return "NT_GNU_ABI_TAG"; 1252 case 2: return "NT_GNU_HWCAP (Hardware capabilities)"; 1253 case 3: return "NT_GNU_BUILD_ID (Build id set by ld(1))"; 1254 case 4: return "NT_GNU_GOLD_VERSION (GNU gold version)"; 1255 case 5: return "NT_GNU_PROPERTY_TYPE_0"; 1256 default: return (note_type_unknown(nt)); 1257 } 1258 } 1259 1260 static const char * 1261 note_type_go(unsigned int nt) 1262 { 1263 switch (nt) { 1264 case 4: return "elfGoBuildIDTag"; 1265 default: return (note_type_unknown(nt)); 1266 } 1267 } 1268 1269 static const char * 1270 note_type_netbsd(unsigned int nt) 1271 { 1272 switch (nt) { 1273 case 1: return "NT_NETBSD_IDENT"; 1274 default: return (note_type_unknown(nt)); 1275 } 1276 } 1277 1278 static const char * 1279 note_type_openbsd(unsigned int nt) 1280 { 1281 switch (nt) { 1282 case 1: return "NT_OPENBSD_IDENT"; 1283 default: return (note_type_unknown(nt)); 1284 } 1285 } 1286 1287 static const char * 1288 note_type_unknown(unsigned int nt) 1289 { 1290 static char s_nt[32]; 1291 1292 snprintf(s_nt, sizeof(s_nt), 1293 nt >= 0x100 ? "<unknown: 0x%x>" : "<unknown: %u>", nt); 1294 return (s_nt); 1295 } 1296 1297 static const char * 1298 note_type_xen(unsigned int nt) 1299 { 1300 switch (nt) { 1301 case 0: return "XEN_ELFNOTE_INFO"; 1302 case 1: return "XEN_ELFNOTE_ENTRY"; 1303 case 2: return "XEN_ELFNOTE_HYPERCALL_PAGE"; 1304 case 3: return "XEN_ELFNOTE_VIRT_BASE"; 1305 case 4: return "XEN_ELFNOTE_PADDR_OFFSET"; 1306 case 5: return "XEN_ELFNOTE_XEN_VERSION"; 1307 case 6: return "XEN_ELFNOTE_GUEST_OS"; 1308 case 7: return "XEN_ELFNOTE_GUEST_VERSION"; 1309 case 8: return "XEN_ELFNOTE_LOADER"; 1310 case 9: return "XEN_ELFNOTE_PAE_MODE"; 1311 case 10: return "XEN_ELFNOTE_FEATURES"; 1312 case 11: return "XEN_ELFNOTE_BSD_SYMTAB"; 1313 case 12: return "XEN_ELFNOTE_HV_START_LOW"; 1314 case 13: return "XEN_ELFNOTE_L1_MFN_VALID"; 1315 case 14: return "XEN_ELFNOTE_SUSPEND_CANCEL"; 1316 case 15: return "XEN_ELFNOTE_INIT_P2M"; 1317 case 16: return "XEN_ELFNOTE_MOD_START_PFN"; 1318 case 17: return "XEN_ELFNOTE_SUPPORTED_FEATURES"; 1319 case 18: return "XEN_ELFNOTE_PHYS32_ENTRY"; 1320 default: return (note_type_unknown(nt)); 1321 } 1322 } 1323 1324 static struct { 1325 const char *name; 1326 int value; 1327 } l_flag[] = { 1328 {"EXACT_MATCH", LL_EXACT_MATCH}, 1329 {"IGNORE_INT_VER", LL_IGNORE_INT_VER}, 1330 {"REQUIRE_MINOR", LL_REQUIRE_MINOR}, 1331 {"EXPORTS", LL_EXPORTS}, 1332 {"DELAY_LOAD", LL_DELAY_LOAD}, 1333 {"DELTA", LL_DELTA}, 1334 {NULL, 0} 1335 }; 1336 1337 static struct mips_option mips_exceptions_option[] = { 1338 {OEX_PAGE0, "PAGE0"}, 1339 {OEX_SMM, "SMM"}, 1340 {OEX_PRECISEFP, "PRECISEFP"}, 1341 {OEX_DISMISS, "DISMISS"}, 1342 {0, NULL} 1343 }; 1344 1345 static struct mips_option mips_pad_option[] = { 1346 {OPAD_PREFIX, "PREFIX"}, 1347 {OPAD_POSTFIX, "POSTFIX"}, 1348 {OPAD_SYMBOL, "SYMBOL"}, 1349 {0, NULL} 1350 }; 1351 1352 static struct mips_option mips_hwpatch_option[] = { 1353 {OHW_R4KEOP, "R4KEOP"}, 1354 {OHW_R8KPFETCH, "R8KPFETCH"}, 1355 {OHW_R5KEOP, "R5KEOP"}, 1356 {OHW_R5KCVTL, "R5KCVTL"}, 1357 {0, NULL} 1358 }; 1359 1360 static struct mips_option mips_hwa_option[] = { 1361 {OHWA0_R4KEOP_CHECKED, "R4KEOP_CHECKED"}, 1362 {OHWA0_R4KEOP_CLEAN, "R4KEOP_CLEAN"}, 1363 {0, NULL} 1364 }; 1365 1366 static struct mips_option mips_hwo_option[] = { 1367 {OHWO0_FIXADE, "FIXADE"}, 1368 {0, NULL} 1369 }; 1370 1371 static const char * 1372 option_kind(uint8_t kind) 1373 { 1374 static char s_kind[32]; 1375 1376 switch (kind) { 1377 case ODK_NULL: return "NULL"; 1378 case ODK_REGINFO: return "REGINFO"; 1379 case ODK_EXCEPTIONS: return "EXCEPTIONS"; 1380 case ODK_PAD: return "PAD"; 1381 case ODK_HWPATCH: return "HWPATCH"; 1382 case ODK_FILL: return "FILL"; 1383 case ODK_TAGS: return "TAGS"; 1384 case ODK_HWAND: return "HWAND"; 1385 case ODK_HWOR: return "HWOR"; 1386 case ODK_GP_GROUP: return "GP_GROUP"; 1387 case ODK_IDENT: return "IDENT"; 1388 default: 1389 snprintf(s_kind, sizeof(s_kind), "<unknown: %u>", kind); 1390 return (s_kind); 1391 } 1392 } 1393 1394 static const char * 1395 top_tag(unsigned int tag) 1396 { 1397 static char s_top_tag[32]; 1398 1399 switch (tag) { 1400 case 1: return "File Attributes"; 1401 case 2: return "Section Attributes"; 1402 case 3: return "Symbol Attributes"; 1403 default: 1404 snprintf(s_top_tag, sizeof(s_top_tag), "Unknown tag: %u", tag); 1405 return (s_top_tag); 1406 } 1407 } 1408 1409 static const char * 1410 aeabi_cpu_arch(uint64_t arch) 1411 { 1412 static char s_cpu_arch[32]; 1413 1414 switch (arch) { 1415 case 0: return "Pre-V4"; 1416 case 1: return "ARM v4"; 1417 case 2: return "ARM v4T"; 1418 case 3: return "ARM v5T"; 1419 case 4: return "ARM v5TE"; 1420 case 5: return "ARM v5TEJ"; 1421 case 6: return "ARM v6"; 1422 case 7: return "ARM v6KZ"; 1423 case 8: return "ARM v6T2"; 1424 case 9: return "ARM v6K"; 1425 case 10: return "ARM v7"; 1426 case 11: return "ARM v6-M"; 1427 case 12: return "ARM v6S-M"; 1428 case 13: return "ARM v7E-M"; 1429 default: 1430 snprintf(s_cpu_arch, sizeof(s_cpu_arch), 1431 "Unknown (%ju)", (uintmax_t) arch); 1432 return (s_cpu_arch); 1433 } 1434 } 1435 1436 static const char * 1437 aeabi_cpu_arch_profile(uint64_t pf) 1438 { 1439 static char s_arch_profile[32]; 1440 1441 switch (pf) { 1442 case 0: 1443 return "Not applicable"; 1444 case 0x41: /* 'A' */ 1445 return "Application Profile"; 1446 case 0x52: /* 'R' */ 1447 return "Real-Time Profile"; 1448 case 0x4D: /* 'M' */ 1449 return "Microcontroller Profile"; 1450 case 0x53: /* 'S' */ 1451 return "Application or Real-Time Profile"; 1452 default: 1453 snprintf(s_arch_profile, sizeof(s_arch_profile), 1454 "Unknown (%ju)\n", (uintmax_t) pf); 1455 return (s_arch_profile); 1456 } 1457 } 1458 1459 static const char * 1460 aeabi_arm_isa(uint64_t ai) 1461 { 1462 static char s_ai[32]; 1463 1464 switch (ai) { 1465 case 0: return "No"; 1466 case 1: return "Yes"; 1467 default: 1468 snprintf(s_ai, sizeof(s_ai), "Unknown (%ju)\n", 1469 (uintmax_t) ai); 1470 return (s_ai); 1471 } 1472 } 1473 1474 static const char * 1475 aeabi_thumb_isa(uint64_t ti) 1476 { 1477 static char s_ti[32]; 1478 1479 switch (ti) { 1480 case 0: return "No"; 1481 case 1: return "16-bit Thumb"; 1482 case 2: return "32-bit Thumb"; 1483 default: 1484 snprintf(s_ti, sizeof(s_ti), "Unknown (%ju)\n", 1485 (uintmax_t) ti); 1486 return (s_ti); 1487 } 1488 } 1489 1490 static const char * 1491 aeabi_fp_arch(uint64_t fp) 1492 { 1493 static char s_fp_arch[32]; 1494 1495 switch (fp) { 1496 case 0: return "No"; 1497 case 1: return "VFPv1"; 1498 case 2: return "VFPv2"; 1499 case 3: return "VFPv3"; 1500 case 4: return "VFPv3-D16"; 1501 case 5: return "VFPv4"; 1502 case 6: return "VFPv4-D16"; 1503 default: 1504 snprintf(s_fp_arch, sizeof(s_fp_arch), "Unknown (%ju)", 1505 (uintmax_t) fp); 1506 return (s_fp_arch); 1507 } 1508 } 1509 1510 static const char * 1511 aeabi_wmmx_arch(uint64_t wmmx) 1512 { 1513 static char s_wmmx[32]; 1514 1515 switch (wmmx) { 1516 case 0: return "No"; 1517 case 1: return "WMMXv1"; 1518 case 2: return "WMMXv2"; 1519 default: 1520 snprintf(s_wmmx, sizeof(s_wmmx), "Unknown (%ju)", 1521 (uintmax_t) wmmx); 1522 return (s_wmmx); 1523 } 1524 } 1525 1526 static const char * 1527 aeabi_adv_simd_arch(uint64_t simd) 1528 { 1529 static char s_simd[32]; 1530 1531 switch (simd) { 1532 case 0: return "No"; 1533 case 1: return "NEONv1"; 1534 case 2: return "NEONv2"; 1535 default: 1536 snprintf(s_simd, sizeof(s_simd), "Unknown (%ju)", 1537 (uintmax_t) simd); 1538 return (s_simd); 1539 } 1540 } 1541 1542 static const char * 1543 aeabi_pcs_config(uint64_t pcs) 1544 { 1545 static char s_pcs[32]; 1546 1547 switch (pcs) { 1548 case 0: return "None"; 1549 case 1: return "Bare platform"; 1550 case 2: return "Linux"; 1551 case 3: return "Linux DSO"; 1552 case 4: return "Palm OS 2004"; 1553 case 5: return "Palm OS (future)"; 1554 case 6: return "Symbian OS 2004"; 1555 case 7: return "Symbian OS (future)"; 1556 default: 1557 snprintf(s_pcs, sizeof(s_pcs), "Unknown (%ju)", 1558 (uintmax_t) pcs); 1559 return (s_pcs); 1560 } 1561 } 1562 1563 static const char * 1564 aeabi_pcs_r9(uint64_t r9) 1565 { 1566 static char s_r9[32]; 1567 1568 switch (r9) { 1569 case 0: return "V6"; 1570 case 1: return "SB"; 1571 case 2: return "TLS pointer"; 1572 case 3: return "Unused"; 1573 default: 1574 snprintf(s_r9, sizeof(s_r9), "Unknown (%ju)", (uintmax_t) r9); 1575 return (s_r9); 1576 } 1577 } 1578 1579 static const char * 1580 aeabi_pcs_rw(uint64_t rw) 1581 { 1582 static char s_rw[32]; 1583 1584 switch (rw) { 1585 case 0: return "Absolute"; 1586 case 1: return "PC-relative"; 1587 case 2: return "SB-relative"; 1588 case 3: return "None"; 1589 default: 1590 snprintf(s_rw, sizeof(s_rw), "Unknown (%ju)", (uintmax_t) rw); 1591 return (s_rw); 1592 } 1593 } 1594 1595 static const char * 1596 aeabi_pcs_ro(uint64_t ro) 1597 { 1598 static char s_ro[32]; 1599 1600 switch (ro) { 1601 case 0: return "Absolute"; 1602 case 1: return "PC-relative"; 1603 case 2: return "None"; 1604 default: 1605 snprintf(s_ro, sizeof(s_ro), "Unknown (%ju)", (uintmax_t) ro); 1606 return (s_ro); 1607 } 1608 } 1609 1610 static const char * 1611 aeabi_pcs_got(uint64_t got) 1612 { 1613 static char s_got[32]; 1614 1615 switch (got) { 1616 case 0: return "None"; 1617 case 1: return "direct"; 1618 case 2: return "indirect via GOT"; 1619 default: 1620 snprintf(s_got, sizeof(s_got), "Unknown (%ju)", 1621 (uintmax_t) got); 1622 return (s_got); 1623 } 1624 } 1625 1626 static const char * 1627 aeabi_pcs_wchar_t(uint64_t wt) 1628 { 1629 static char s_wt[32]; 1630 1631 switch (wt) { 1632 case 0: return "None"; 1633 case 2: return "wchar_t size 2"; 1634 case 4: return "wchar_t size 4"; 1635 default: 1636 snprintf(s_wt, sizeof(s_wt), "Unknown (%ju)", (uintmax_t) wt); 1637 return (s_wt); 1638 } 1639 } 1640 1641 static const char * 1642 aeabi_enum_size(uint64_t es) 1643 { 1644 static char s_es[32]; 1645 1646 switch (es) { 1647 case 0: return "None"; 1648 case 1: return "smallest"; 1649 case 2: return "32-bit"; 1650 case 3: return "visible 32-bit"; 1651 default: 1652 snprintf(s_es, sizeof(s_es), "Unknown (%ju)", (uintmax_t) es); 1653 return (s_es); 1654 } 1655 } 1656 1657 static const char * 1658 aeabi_align_needed(uint64_t an) 1659 { 1660 static char s_align_n[64]; 1661 1662 switch (an) { 1663 case 0: return "No"; 1664 case 1: return "8-byte align"; 1665 case 2: return "4-byte align"; 1666 case 3: return "Reserved"; 1667 default: 1668 if (an >= 4 && an <= 12) 1669 snprintf(s_align_n, sizeof(s_align_n), "8-byte align" 1670 " and up to 2^%ju-byte extended align", 1671 (uintmax_t) an); 1672 else 1673 snprintf(s_align_n, sizeof(s_align_n), "Unknown (%ju)", 1674 (uintmax_t) an); 1675 return (s_align_n); 1676 } 1677 } 1678 1679 static const char * 1680 aeabi_align_preserved(uint64_t ap) 1681 { 1682 static char s_align_p[128]; 1683 1684 switch (ap) { 1685 case 0: return "No"; 1686 case 1: return "8-byte align"; 1687 case 2: return "8-byte align and SP % 8 == 0"; 1688 case 3: return "Reserved"; 1689 default: 1690 if (ap >= 4 && ap <= 12) 1691 snprintf(s_align_p, sizeof(s_align_p), "8-byte align" 1692 " and SP %% 8 == 0 and up to 2^%ju-byte extended" 1693 " align", (uintmax_t) ap); 1694 else 1695 snprintf(s_align_p, sizeof(s_align_p), "Unknown (%ju)", 1696 (uintmax_t) ap); 1697 return (s_align_p); 1698 } 1699 } 1700 1701 static const char * 1702 aeabi_fp_rounding(uint64_t fr) 1703 { 1704 static char s_fp_r[32]; 1705 1706 switch (fr) { 1707 case 0: return "Unused"; 1708 case 1: return "Needed"; 1709 default: 1710 snprintf(s_fp_r, sizeof(s_fp_r), "Unknown (%ju)", 1711 (uintmax_t) fr); 1712 return (s_fp_r); 1713 } 1714 } 1715 1716 static const char * 1717 aeabi_fp_denormal(uint64_t fd) 1718 { 1719 static char s_fp_d[32]; 1720 1721 switch (fd) { 1722 case 0: return "Unused"; 1723 case 1: return "Needed"; 1724 case 2: return "Sign Only"; 1725 default: 1726 snprintf(s_fp_d, sizeof(s_fp_d), "Unknown (%ju)", 1727 (uintmax_t) fd); 1728 return (s_fp_d); 1729 } 1730 } 1731 1732 static const char * 1733 aeabi_fp_exceptions(uint64_t fe) 1734 { 1735 static char s_fp_e[32]; 1736 1737 switch (fe) { 1738 case 0: return "Unused"; 1739 case 1: return "Needed"; 1740 default: 1741 snprintf(s_fp_e, sizeof(s_fp_e), "Unknown (%ju)", 1742 (uintmax_t) fe); 1743 return (s_fp_e); 1744 } 1745 } 1746 1747 static const char * 1748 aeabi_fp_user_exceptions(uint64_t fu) 1749 { 1750 static char s_fp_u[32]; 1751 1752 switch (fu) { 1753 case 0: return "Unused"; 1754 case 1: return "Needed"; 1755 default: 1756 snprintf(s_fp_u, sizeof(s_fp_u), "Unknown (%ju)", 1757 (uintmax_t) fu); 1758 return (s_fp_u); 1759 } 1760 } 1761 1762 static const char * 1763 aeabi_fp_number_model(uint64_t fn) 1764 { 1765 static char s_fp_n[32]; 1766 1767 switch (fn) { 1768 case 0: return "Unused"; 1769 case 1: return "IEEE 754 normal"; 1770 case 2: return "RTABI"; 1771 case 3: return "IEEE 754"; 1772 default: 1773 snprintf(s_fp_n, sizeof(s_fp_n), "Unknown (%ju)", 1774 (uintmax_t) fn); 1775 return (s_fp_n); 1776 } 1777 } 1778 1779 static const char * 1780 aeabi_fp_16bit_format(uint64_t fp16) 1781 { 1782 static char s_fp_16[64]; 1783 1784 switch (fp16) { 1785 case 0: return "None"; 1786 case 1: return "IEEE 754"; 1787 case 2: return "VFPv3/Advanced SIMD (alternative format)"; 1788 default: 1789 snprintf(s_fp_16, sizeof(s_fp_16), "Unknown (%ju)", 1790 (uintmax_t) fp16); 1791 return (s_fp_16); 1792 } 1793 } 1794 1795 static const char * 1796 aeabi_mpext(uint64_t mp) 1797 { 1798 static char s_mp[32]; 1799 1800 switch (mp) { 1801 case 0: return "Not allowed"; 1802 case 1: return "Allowed"; 1803 default: 1804 snprintf(s_mp, sizeof(s_mp), "Unknown (%ju)", 1805 (uintmax_t) mp); 1806 return (s_mp); 1807 } 1808 } 1809 1810 static const char * 1811 aeabi_div(uint64_t du) 1812 { 1813 static char s_du[32]; 1814 1815 switch (du) { 1816 case 0: return "Yes (V7-R/V7-M)"; 1817 case 1: return "No"; 1818 case 2: return "Yes (V7-A)"; 1819 default: 1820 snprintf(s_du, sizeof(s_du), "Unknown (%ju)", 1821 (uintmax_t) du); 1822 return (s_du); 1823 } 1824 } 1825 1826 static const char * 1827 aeabi_t2ee(uint64_t t2ee) 1828 { 1829 static char s_t2ee[32]; 1830 1831 switch (t2ee) { 1832 case 0: return "Not allowed"; 1833 case 1: return "Allowed"; 1834 default: 1835 snprintf(s_t2ee, sizeof(s_t2ee), "Unknown(%ju)", 1836 (uintmax_t) t2ee); 1837 return (s_t2ee); 1838 } 1839 1840 } 1841 1842 static const char * 1843 aeabi_hardfp(uint64_t hfp) 1844 { 1845 static char s_hfp[32]; 1846 1847 switch (hfp) { 1848 case 0: return "Tag_FP_arch"; 1849 case 1: return "only SP"; 1850 case 2: return "only DP"; 1851 case 3: return "both SP and DP"; 1852 default: 1853 snprintf(s_hfp, sizeof(s_hfp), "Unknown (%ju)", 1854 (uintmax_t) hfp); 1855 return (s_hfp); 1856 } 1857 } 1858 1859 static const char * 1860 aeabi_vfp_args(uint64_t va) 1861 { 1862 static char s_va[32]; 1863 1864 switch (va) { 1865 case 0: return "AAPCS (base variant)"; 1866 case 1: return "AAPCS (VFP variant)"; 1867 case 2: return "toolchain-specific"; 1868 default: 1869 snprintf(s_va, sizeof(s_va), "Unknown (%ju)", (uintmax_t) va); 1870 return (s_va); 1871 } 1872 } 1873 1874 static const char * 1875 aeabi_wmmx_args(uint64_t wa) 1876 { 1877 static char s_wa[32]; 1878 1879 switch (wa) { 1880 case 0: return "AAPCS (base variant)"; 1881 case 1: return "Intel WMMX"; 1882 case 2: return "toolchain-specific"; 1883 default: 1884 snprintf(s_wa, sizeof(s_wa), "Unknown(%ju)", (uintmax_t) wa); 1885 return (s_wa); 1886 } 1887 } 1888 1889 static const char * 1890 aeabi_unaligned_access(uint64_t ua) 1891 { 1892 static char s_ua[32]; 1893 1894 switch (ua) { 1895 case 0: return "Not allowed"; 1896 case 1: return "Allowed"; 1897 default: 1898 snprintf(s_ua, sizeof(s_ua), "Unknown(%ju)", (uintmax_t) ua); 1899 return (s_ua); 1900 } 1901 } 1902 1903 static const char * 1904 aeabi_fp_hpext(uint64_t fh) 1905 { 1906 static char s_fh[32]; 1907 1908 switch (fh) { 1909 case 0: return "Not allowed"; 1910 case 1: return "Allowed"; 1911 default: 1912 snprintf(s_fh, sizeof(s_fh), "Unknown(%ju)", (uintmax_t) fh); 1913 return (s_fh); 1914 } 1915 } 1916 1917 static const char * 1918 aeabi_optm_goal(uint64_t og) 1919 { 1920 static char s_og[32]; 1921 1922 switch (og) { 1923 case 0: return "None"; 1924 case 1: return "Speed"; 1925 case 2: return "Speed aggressive"; 1926 case 3: return "Space"; 1927 case 4: return "Space aggressive"; 1928 case 5: return "Debugging"; 1929 case 6: return "Best Debugging"; 1930 default: 1931 snprintf(s_og, sizeof(s_og), "Unknown(%ju)", (uintmax_t) og); 1932 return (s_og); 1933 } 1934 } 1935 1936 static const char * 1937 aeabi_fp_optm_goal(uint64_t fog) 1938 { 1939 static char s_fog[32]; 1940 1941 switch (fog) { 1942 case 0: return "None"; 1943 case 1: return "Speed"; 1944 case 2: return "Speed aggressive"; 1945 case 3: return "Space"; 1946 case 4: return "Space aggressive"; 1947 case 5: return "Accurary"; 1948 case 6: return "Best Accurary"; 1949 default: 1950 snprintf(s_fog, sizeof(s_fog), "Unknown(%ju)", 1951 (uintmax_t) fog); 1952 return (s_fog); 1953 } 1954 } 1955 1956 static const char * 1957 aeabi_virtual(uint64_t vt) 1958 { 1959 static char s_virtual[64]; 1960 1961 switch (vt) { 1962 case 0: return "No"; 1963 case 1: return "TrustZone"; 1964 case 2: return "Virtualization extension"; 1965 case 3: return "TrustZone and virtualization extension"; 1966 default: 1967 snprintf(s_virtual, sizeof(s_virtual), "Unknown(%ju)", 1968 (uintmax_t) vt); 1969 return (s_virtual); 1970 } 1971 } 1972 1973 static struct { 1974 uint64_t tag; 1975 const char *s_tag; 1976 const char *(*get_desc)(uint64_t val); 1977 } aeabi_tags[] = { 1978 {4, "Tag_CPU_raw_name", NULL}, 1979 {5, "Tag_CPU_name", NULL}, 1980 {6, "Tag_CPU_arch", aeabi_cpu_arch}, 1981 {7, "Tag_CPU_arch_profile", aeabi_cpu_arch_profile}, 1982 {8, "Tag_ARM_ISA_use", aeabi_arm_isa}, 1983 {9, "Tag_THUMB_ISA_use", aeabi_thumb_isa}, 1984 {10, "Tag_FP_arch", aeabi_fp_arch}, 1985 {11, "Tag_WMMX_arch", aeabi_wmmx_arch}, 1986 {12, "Tag_Advanced_SIMD_arch", aeabi_adv_simd_arch}, 1987 {13, "Tag_PCS_config", aeabi_pcs_config}, 1988 {14, "Tag_ABI_PCS_R9_use", aeabi_pcs_r9}, 1989 {15, "Tag_ABI_PCS_RW_data", aeabi_pcs_rw}, 1990 {16, "Tag_ABI_PCS_RO_data", aeabi_pcs_ro}, 1991 {17, "Tag_ABI_PCS_GOT_use", aeabi_pcs_got}, 1992 {18, "Tag_ABI_PCS_wchar_t", aeabi_pcs_wchar_t}, 1993 {19, "Tag_ABI_FP_rounding", aeabi_fp_rounding}, 1994 {20, "Tag_ABI_FP_denormal", aeabi_fp_denormal}, 1995 {21, "Tag_ABI_FP_exceptions", aeabi_fp_exceptions}, 1996 {22, "Tag_ABI_FP_user_exceptions", aeabi_fp_user_exceptions}, 1997 {23, "Tag_ABI_FP_number_model", aeabi_fp_number_model}, 1998 {24, "Tag_ABI_align_needed", aeabi_align_needed}, 1999 {25, "Tag_ABI_align_preserved", aeabi_align_preserved}, 2000 {26, "Tag_ABI_enum_size", aeabi_enum_size}, 2001 {27, "Tag_ABI_HardFP_use", aeabi_hardfp}, 2002 {28, "Tag_ABI_VFP_args", aeabi_vfp_args}, 2003 {29, "Tag_ABI_WMMX_args", aeabi_wmmx_args}, 2004 {30, "Tag_ABI_optimization_goals", aeabi_optm_goal}, 2005 {31, "Tag_ABI_FP_optimization_goals", aeabi_fp_optm_goal}, 2006 {32, "Tag_compatibility", NULL}, 2007 {34, "Tag_CPU_unaligned_access", aeabi_unaligned_access}, 2008 {36, "Tag_FP_HP_extension", aeabi_fp_hpext}, 2009 {38, "Tag_ABI_FP_16bit_format", aeabi_fp_16bit_format}, 2010 {42, "Tag_MPextension_use", aeabi_mpext}, 2011 {44, "Tag_DIV_use", aeabi_div}, 2012 {64, "Tag_nodefaults", NULL}, 2013 {65, "Tag_also_compatible_with", NULL}, 2014 {66, "Tag_T2EE_use", aeabi_t2ee}, 2015 {67, "Tag_conformance", NULL}, 2016 {68, "Tag_Virtualization_use", aeabi_virtual}, 2017 {70, "Tag_MPextension_use", aeabi_mpext}, 2018 }; 2019 2020 static const char * 2021 mips_abi_fp(uint64_t fp) 2022 { 2023 static char s_mips_abi_fp[64]; 2024 2025 switch (fp) { 2026 case 0: return "N/A"; 2027 case 1: return "Hard float (double precision)"; 2028 case 2: return "Hard float (single precision)"; 2029 case 3: return "Soft float"; 2030 case 4: return "64-bit float (-mips32r2 -mfp64)"; 2031 default: 2032 snprintf(s_mips_abi_fp, sizeof(s_mips_abi_fp), "Unknown(%ju)", 2033 (uintmax_t) fp); 2034 return (s_mips_abi_fp); 2035 } 2036 } 2037 2038 static const char * 2039 ppc_abi_fp(uint64_t fp) 2040 { 2041 static char s_ppc_abi_fp[64]; 2042 2043 switch (fp) { 2044 case 0: return "N/A"; 2045 case 1: return "Hard float (double precision)"; 2046 case 2: return "Soft float"; 2047 case 3: return "Hard float (single precision)"; 2048 default: 2049 snprintf(s_ppc_abi_fp, sizeof(s_ppc_abi_fp), "Unknown(%ju)", 2050 (uintmax_t) fp); 2051 return (s_ppc_abi_fp); 2052 } 2053 } 2054 2055 static const char * 2056 ppc_abi_vector(uint64_t vec) 2057 { 2058 static char s_vec[64]; 2059 2060 switch (vec) { 2061 case 0: return "N/A"; 2062 case 1: return "Generic purpose registers"; 2063 case 2: return "AltiVec registers"; 2064 case 3: return "SPE registers"; 2065 default: 2066 snprintf(s_vec, sizeof(s_vec), "Unknown(%ju)", (uintmax_t) vec); 2067 return (s_vec); 2068 } 2069 } 2070 2071 static const char * 2072 dwarf_reg(unsigned int mach, unsigned int reg) 2073 { 2074 2075 switch (mach) { 2076 case EM_386: 2077 case EM_IAMCU: 2078 switch (reg) { 2079 case 0: return "eax"; 2080 case 1: return "ecx"; 2081 case 2: return "edx"; 2082 case 3: return "ebx"; 2083 case 4: return "esp"; 2084 case 5: return "ebp"; 2085 case 6: return "esi"; 2086 case 7: return "edi"; 2087 case 8: return "eip"; 2088 case 9: return "eflags"; 2089 case 11: return "st0"; 2090 case 12: return "st1"; 2091 case 13: return "st2"; 2092 case 14: return "st3"; 2093 case 15: return "st4"; 2094 case 16: return "st5"; 2095 case 17: return "st6"; 2096 case 18: return "st7"; 2097 case 21: return "xmm0"; 2098 case 22: return "xmm1"; 2099 case 23: return "xmm2"; 2100 case 24: return "xmm3"; 2101 case 25: return "xmm4"; 2102 case 26: return "xmm5"; 2103 case 27: return "xmm6"; 2104 case 28: return "xmm7"; 2105 case 29: return "mm0"; 2106 case 30: return "mm1"; 2107 case 31: return "mm2"; 2108 case 32: return "mm3"; 2109 case 33: return "mm4"; 2110 case 34: return "mm5"; 2111 case 35: return "mm6"; 2112 case 36: return "mm7"; 2113 case 37: return "fcw"; 2114 case 38: return "fsw"; 2115 case 39: return "mxcsr"; 2116 case 40: return "es"; 2117 case 41: return "cs"; 2118 case 42: return "ss"; 2119 case 43: return "ds"; 2120 case 44: return "fs"; 2121 case 45: return "gs"; 2122 case 48: return "tr"; 2123 case 49: return "ldtr"; 2124 default: return (NULL); 2125 } 2126 case EM_RISCV: 2127 switch (reg) { 2128 case 0: return "zero"; 2129 case 1: return "ra"; 2130 case 2: return "sp"; 2131 case 3: return "gp"; 2132 case 4: return "tp"; 2133 case 5: return "t0"; 2134 case 6: return "t1"; 2135 case 7: return "t2"; 2136 case 8: return "s0"; 2137 case 9: return "s1"; 2138 case 10: return "a0"; 2139 case 11: return "a1"; 2140 case 12: return "a2"; 2141 case 13: return "a3"; 2142 case 14: return "a4"; 2143 case 15: return "a5"; 2144 case 16: return "a6"; 2145 case 17: return "a7"; 2146 case 18: return "s2"; 2147 case 19: return "s3"; 2148 case 20: return "s4"; 2149 case 21: return "s5"; 2150 case 22: return "s6"; 2151 case 23: return "s7"; 2152 case 24: return "s8"; 2153 case 25: return "s9"; 2154 case 26: return "s10"; 2155 case 27: return "s11"; 2156 case 28: return "t3"; 2157 case 29: return "t4"; 2158 case 30: return "t5"; 2159 case 31: return "t6"; 2160 case 32: return "ft0"; 2161 case 33: return "ft1"; 2162 case 34: return "ft2"; 2163 case 35: return "ft3"; 2164 case 36: return "ft4"; 2165 case 37: return "ft5"; 2166 case 38: return "ft6"; 2167 case 39: return "ft7"; 2168 case 40: return "fs0"; 2169 case 41: return "fs1"; 2170 case 42: return "fa0"; 2171 case 43: return "fa1"; 2172 case 44: return "fa2"; 2173 case 45: return "fa3"; 2174 case 46: return "fa4"; 2175 case 47: return "fa5"; 2176 case 48: return "fa6"; 2177 case 49: return "fa7"; 2178 case 50: return "fs2"; 2179 case 51: return "fs3"; 2180 case 52: return "fs4"; 2181 case 53: return "fs5"; 2182 case 54: return "fs6"; 2183 case 55: return "fs7"; 2184 case 56: return "fs8"; 2185 case 57: return "fs9"; 2186 case 58: return "fs10"; 2187 case 59: return "fs11"; 2188 case 60: return "ft8"; 2189 case 61: return "ft9"; 2190 case 62: return "ft10"; 2191 case 63: return "ft11"; 2192 default: return (NULL); 2193 } 2194 case EM_X86_64: 2195 switch (reg) { 2196 case 0: return "rax"; 2197 case 1: return "rdx"; 2198 case 2: return "rcx"; 2199 case 3: return "rbx"; 2200 case 4: return "rsi"; 2201 case 5: return "rdi"; 2202 case 6: return "rbp"; 2203 case 7: return "rsp"; 2204 case 16: return "rip"; 2205 case 17: return "xmm0"; 2206 case 18: return "xmm1"; 2207 case 19: return "xmm2"; 2208 case 20: return "xmm3"; 2209 case 21: return "xmm4"; 2210 case 22: return "xmm5"; 2211 case 23: return "xmm6"; 2212 case 24: return "xmm7"; 2213 case 25: return "xmm8"; 2214 case 26: return "xmm9"; 2215 case 27: return "xmm10"; 2216 case 28: return "xmm11"; 2217 case 29: return "xmm12"; 2218 case 30: return "xmm13"; 2219 case 31: return "xmm14"; 2220 case 32: return "xmm15"; 2221 case 33: return "st0"; 2222 case 34: return "st1"; 2223 case 35: return "st2"; 2224 case 36: return "st3"; 2225 case 37: return "st4"; 2226 case 38: return "st5"; 2227 case 39: return "st6"; 2228 case 40: return "st7"; 2229 case 41: return "mm0"; 2230 case 42: return "mm1"; 2231 case 43: return "mm2"; 2232 case 44: return "mm3"; 2233 case 45: return "mm4"; 2234 case 46: return "mm5"; 2235 case 47: return "mm6"; 2236 case 48: return "mm7"; 2237 case 49: return "rflags"; 2238 case 50: return "es"; 2239 case 51: return "cs"; 2240 case 52: return "ss"; 2241 case 53: return "ds"; 2242 case 54: return "fs"; 2243 case 55: return "gs"; 2244 case 58: return "fs.base"; 2245 case 59: return "gs.base"; 2246 case 62: return "tr"; 2247 case 63: return "ldtr"; 2248 case 64: return "mxcsr"; 2249 case 65: return "fcw"; 2250 case 66: return "fsw"; 2251 default: return (NULL); 2252 } 2253 default: 2254 return (NULL); 2255 } 2256 } 2257 2258 static void 2259 dump_ehdr(struct readelf *re) 2260 { 2261 size_t phnum, shnum, shstrndx; 2262 int i; 2263 2264 printf("ELF Header:\n"); 2265 2266 /* e_ident[]. */ 2267 printf(" Magic: "); 2268 for (i = 0; i < EI_NIDENT; i++) 2269 printf("%.2x ", re->ehdr.e_ident[i]); 2270 putchar('\n'); 2271 2272 /* EI_CLASS. */ 2273 printf("%-37s%s\n", " Class:", elf_class(re->ehdr.e_ident[EI_CLASS])); 2274 2275 /* EI_DATA. */ 2276 printf("%-37s%s\n", " Data:", elf_endian(re->ehdr.e_ident[EI_DATA])); 2277 2278 /* EI_VERSION. */ 2279 printf("%-37s%d %s\n", " Version:", re->ehdr.e_ident[EI_VERSION], 2280 elf_ver(re->ehdr.e_ident[EI_VERSION])); 2281 2282 /* EI_OSABI. */ 2283 printf("%-37s%s\n", " OS/ABI:", elf_osabi(re->ehdr.e_ident[EI_OSABI])); 2284 2285 /* EI_ABIVERSION. */ 2286 printf("%-37s%d\n", " ABI Version:", re->ehdr.e_ident[EI_ABIVERSION]); 2287 2288 /* e_type. */ 2289 printf("%-37s%s\n", " Type:", elf_type(re->ehdr.e_type)); 2290 2291 /* e_machine. */ 2292 printf("%-37s%s\n", " Machine:", elf_machine(re->ehdr.e_machine)); 2293 2294 /* e_version. */ 2295 printf("%-37s%#x\n", " Version:", re->ehdr.e_version); 2296 2297 /* e_entry. */ 2298 printf("%-37s%#jx\n", " Entry point address:", 2299 (uintmax_t)re->ehdr.e_entry); 2300 2301 /* e_phoff. */ 2302 printf("%-37s%ju (bytes into file)\n", " Start of program headers:", 2303 (uintmax_t)re->ehdr.e_phoff); 2304 2305 /* e_shoff. */ 2306 printf("%-37s%ju (bytes into file)\n", " Start of section headers:", 2307 (uintmax_t)re->ehdr.e_shoff); 2308 2309 /* e_flags. */ 2310 printf("%-37s%#x", " Flags:", re->ehdr.e_flags); 2311 dump_eflags(re, re->ehdr.e_flags); 2312 putchar('\n'); 2313 2314 /* e_ehsize. */ 2315 printf("%-37s%u (bytes)\n", " Size of this header:", 2316 re->ehdr.e_ehsize); 2317 2318 /* e_phentsize. */ 2319 printf("%-37s%u (bytes)\n", " Size of program headers:", 2320 re->ehdr.e_phentsize); 2321 2322 /* e_phnum. */ 2323 printf("%-37s%u", " Number of program headers:", re->ehdr.e_phnum); 2324 if (re->ehdr.e_phnum == PN_XNUM) { 2325 /* Extended program header numbering is in use. */ 2326 if (elf_getphnum(re->elf, &phnum)) 2327 printf(" (%zu)", phnum); 2328 } 2329 putchar('\n'); 2330 2331 /* e_shentsize. */ 2332 printf("%-37s%u (bytes)\n", " Size of section headers:", 2333 re->ehdr.e_shentsize); 2334 2335 /* e_shnum. */ 2336 printf("%-37s%u", " Number of section headers:", re->ehdr.e_shnum); 2337 if (re->ehdr.e_shnum == SHN_UNDEF) { 2338 /* Extended section numbering is in use. */ 2339 if (elf_getshnum(re->elf, &shnum)) 2340 printf(" (%ju)", (uintmax_t)shnum); 2341 } 2342 putchar('\n'); 2343 2344 /* e_shstrndx. */ 2345 printf("%-37s%u", " Section header string table index:", 2346 re->ehdr.e_shstrndx); 2347 if (re->ehdr.e_shstrndx == SHN_XINDEX) { 2348 /* Extended section numbering is in use. */ 2349 if (elf_getshstrndx(re->elf, &shstrndx)) 2350 printf(" (%ju)", (uintmax_t)shstrndx); 2351 } 2352 putchar('\n'); 2353 } 2354 2355 static void 2356 dump_eflags(struct readelf *re, uint64_t e_flags) 2357 { 2358 struct eflags_desc *edesc; 2359 int arm_eabi; 2360 2361 edesc = NULL; 2362 switch (re->ehdr.e_machine) { 2363 case EM_ARM: 2364 arm_eabi = (e_flags & EF_ARM_EABIMASK) >> 24; 2365 if (arm_eabi == 0) 2366 printf(", GNU EABI"); 2367 else if (arm_eabi <= 5) 2368 printf(", Version%d EABI", arm_eabi); 2369 edesc = arm_eflags_desc; 2370 break; 2371 case EM_MIPS: 2372 case EM_MIPS_RS3_LE: 2373 switch ((e_flags & EF_MIPS_ARCH) >> 28) { 2374 case 0: printf(", mips1"); break; 2375 case 1: printf(", mips2"); break; 2376 case 2: printf(", mips3"); break; 2377 case 3: printf(", mips4"); break; 2378 case 4: printf(", mips5"); break; 2379 case 5: printf(", mips32"); break; 2380 case 6: printf(", mips64"); break; 2381 case 7: printf(", mips32r2"); break; 2382 case 8: printf(", mips64r2"); break; 2383 default: break; 2384 } 2385 switch ((e_flags & 0x00FF0000) >> 16) { 2386 case 0x81: printf(", 3900"); break; 2387 case 0x82: printf(", 4010"); break; 2388 case 0x83: printf(", 4100"); break; 2389 case 0x85: printf(", 4650"); break; 2390 case 0x87: printf(", 4120"); break; 2391 case 0x88: printf(", 4111"); break; 2392 case 0x8a: printf(", sb1"); break; 2393 case 0x8b: printf(", octeon"); break; 2394 case 0x8c: printf(", xlr"); break; 2395 case 0x91: printf(", 5400"); break; 2396 case 0x98: printf(", 5500"); break; 2397 case 0x99: printf(", 9000"); break; 2398 case 0xa0: printf(", loongson-2e"); break; 2399 case 0xa1: printf(", loongson-2f"); break; 2400 default: break; 2401 } 2402 switch ((e_flags & 0x0000F000) >> 12) { 2403 case 1: printf(", o32"); break; 2404 case 2: printf(", o64"); break; 2405 case 3: printf(", eabi32"); break; 2406 case 4: printf(", eabi64"); break; 2407 default: break; 2408 } 2409 edesc = mips_eflags_desc; 2410 break; 2411 case EM_PPC64: 2412 switch (e_flags) { 2413 case 0: printf(", Unspecified or Power ELF V1 ABI"); break; 2414 case 1: printf(", Power ELF V1 ABI"); break; 2415 case 2: printf(", OpenPOWER ELF V2 ABI"); break; 2416 default: break; 2417 } 2418 /* FALLTHROUGH */ 2419 case EM_PPC: 2420 edesc = powerpc_eflags_desc; 2421 break; 2422 case EM_RISCV: 2423 switch (e_flags & EF_RISCV_FLOAT_ABI_MASK) { 2424 case EF_RISCV_FLOAT_ABI_SOFT: 2425 printf(", soft-float ABI"); 2426 break; 2427 case EF_RISCV_FLOAT_ABI_SINGLE: 2428 printf(", single-float ABI"); 2429 break; 2430 case EF_RISCV_FLOAT_ABI_DOUBLE: 2431 printf(", double-float ABI"); 2432 break; 2433 case EF_RISCV_FLOAT_ABI_QUAD: 2434 printf(", quad-float ABI"); 2435 break; 2436 } 2437 edesc = riscv_eflags_desc; 2438 break; 2439 case EM_SPARC: 2440 case EM_SPARC32PLUS: 2441 case EM_SPARCV9: 2442 switch ((e_flags & EF_SPARCV9_MM)) { 2443 case EF_SPARCV9_TSO: printf(", tso"); break; 2444 case EF_SPARCV9_PSO: printf(", pso"); break; 2445 case EF_SPARCV9_MM: printf(", rmo"); break; 2446 default: break; 2447 } 2448 edesc = sparc_eflags_desc; 2449 break; 2450 default: 2451 break; 2452 } 2453 2454 if (edesc != NULL) { 2455 while (edesc->desc != NULL) { 2456 if (e_flags & edesc->flag) 2457 printf(", %s", edesc->desc); 2458 edesc++; 2459 } 2460 } 2461 } 2462 2463 static void 2464 dump_phdr(struct readelf *re) 2465 { 2466 const char *rawfile; 2467 GElf_Phdr phdr; 2468 size_t phnum, size; 2469 int i, j; 2470 2471 #define PH_HDR "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz", \ 2472 "MemSiz", "Flg", "Align" 2473 #define PH_CT phdr_type(re->ehdr.e_machine, phdr.p_type), \ 2474 (uintmax_t)phdr.p_offset, (uintmax_t)phdr.p_vaddr, \ 2475 (uintmax_t)phdr.p_paddr, (uintmax_t)phdr.p_filesz, \ 2476 (uintmax_t)phdr.p_memsz, \ 2477 phdr.p_flags & PF_R ? 'R' : ' ', \ 2478 phdr.p_flags & PF_W ? 'W' : ' ', \ 2479 phdr.p_flags & PF_X ? 'E' : ' ', \ 2480 (uintmax_t)phdr.p_align 2481 2482 if (elf_getphnum(re->elf, &phnum) == 0) { 2483 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 2484 return; 2485 } 2486 if (phnum == 0) { 2487 printf("\nThere are no program headers in this file.\n"); 2488 return; 2489 } 2490 2491 printf("\nElf file type is %s", elf_type(re->ehdr.e_type)); 2492 printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry); 2493 printf("There are %ju program headers, starting at offset %ju\n", 2494 (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff); 2495 2496 /* Dump program headers. */ 2497 printf("\nProgram Headers:\n"); 2498 if (re->ec == ELFCLASS32) 2499 printf(" %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR); 2500 else if (re->options & RE_WW) 2501 printf(" %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR); 2502 else 2503 printf(" %-15s%-19s%-19s%s\n %-19s%-20s" 2504 "%-7s%s\n", PH_HDR); 2505 for (i = 0; (size_t) i < phnum; i++) { 2506 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2507 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2508 continue; 2509 } 2510 /* TODO: Add arch-specific segment type dump. */ 2511 if (re->ec == ELFCLASS32) 2512 printf(" %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx " 2513 "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT); 2514 else if (re->options & RE_WW) 2515 printf(" %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx " 2516 "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT); 2517 else 2518 printf(" %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n" 2519 " 0x%16.16jx 0x%16.16jx %c%c%c" 2520 " %#jx\n", PH_CT); 2521 if (phdr.p_type == PT_INTERP) { 2522 if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) { 2523 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 2524 continue; 2525 } 2526 if (phdr.p_offset >= size) { 2527 warnx("invalid program header offset"); 2528 continue; 2529 } 2530 printf(" [Requesting program interpreter: %s]\n", 2531 rawfile + phdr.p_offset); 2532 } 2533 } 2534 2535 /* Dump section to segment mapping. */ 2536 if (re->shnum == 0) 2537 return; 2538 printf("\n Section to Segment mapping:\n"); 2539 printf(" Segment Sections...\n"); 2540 for (i = 0; (size_t)i < phnum; i++) { 2541 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 2542 warnx("gelf_getphdr failed: %s", elf_errmsg(-1)); 2543 continue; 2544 } 2545 printf(" %2.2d ", i); 2546 /* skip NULL section. */ 2547 for (j = 1; (size_t)j < re->shnum; j++) { 2548 if (re->sl[j].off < phdr.p_offset) 2549 continue; 2550 if (re->sl[j].off + re->sl[j].sz > 2551 phdr.p_offset + phdr.p_filesz && 2552 re->sl[j].type != SHT_NOBITS) 2553 continue; 2554 if (re->sl[j].addr < phdr.p_vaddr || 2555 re->sl[j].addr + re->sl[j].sz > 2556 phdr.p_vaddr + phdr.p_memsz) 2557 continue; 2558 if (phdr.p_type == PT_TLS && 2559 (re->sl[j].flags & SHF_TLS) == 0) 2560 continue; 2561 printf("%s ", re->sl[j].name); 2562 } 2563 printf("\n"); 2564 } 2565 #undef PH_HDR 2566 #undef PH_CT 2567 } 2568 2569 static char * 2570 section_flags(struct readelf *re, struct section *s) 2571 { 2572 #define BUF_SZ 256 2573 static char buf[BUF_SZ]; 2574 int i, p, nb; 2575 2576 p = 0; 2577 nb = re->ec == ELFCLASS32 ? 8 : 16; 2578 if (re->options & RE_T) { 2579 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb, 2580 (uintmax_t)s->flags); 2581 p += nb + 4; 2582 } 2583 for (i = 0; section_flag[i].ln != NULL; i++) { 2584 if ((s->flags & section_flag[i].value) == 0) 2585 continue; 2586 if (re->options & RE_T) { 2587 snprintf(&buf[p], BUF_SZ - p, "%s, ", 2588 section_flag[i].ln); 2589 p += strlen(section_flag[i].ln) + 2; 2590 } else 2591 buf[p++] = section_flag[i].sn; 2592 } 2593 if (re->options & RE_T && p > nb + 4) 2594 p -= 2; 2595 buf[p] = '\0'; 2596 2597 return (buf); 2598 } 2599 2600 static void 2601 dump_shdr(struct readelf *re) 2602 { 2603 struct section *s; 2604 int i; 2605 2606 #define S_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2607 "Flg", "Lk", "Inf", "Al" 2608 #define S_HDRL "[Nr] Name", "Type", "Address", "Offset", "Size", \ 2609 "EntSize", "Flags", "Link", "Info", "Align" 2610 #define ST_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \ 2611 "Lk", "Inf", "Al", "Flags" 2612 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link", \ 2613 "Size", "EntSize", "Info", "Align", "Flags" 2614 #define S_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2615 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2616 (uintmax_t)s->entsize, section_flags(re, s), \ 2617 s->link, s->info, (uintmax_t)s->align 2618 #define ST_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2619 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\ 2620 (uintmax_t)s->entsize, s->link, s->info, \ 2621 (uintmax_t)s->align, section_flags(re, s) 2622 #define ST_CTL i, s->name, section_type(re->ehdr.e_machine, s->type), \ 2623 (uintmax_t)s->addr, (uintmax_t)s->off, s->link, \ 2624 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info, \ 2625 (uintmax_t)s->align, section_flags(re, s) 2626 2627 if (re->shnum == 0) { 2628 printf("\nThere are no sections in this file.\n"); 2629 return; 2630 } 2631 printf("There are %ju section headers, starting at offset 0x%jx:\n", 2632 (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff); 2633 printf("\nSection Headers:\n"); 2634 if (re->ec == ELFCLASS32) { 2635 if (re->options & RE_T) 2636 printf(" %s\n %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n" 2637 "%12s\n", ST_HDR); 2638 else 2639 printf(" %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2640 S_HDR); 2641 } else if (re->options & RE_WW) { 2642 if (re->options & RE_T) 2643 printf(" %s\n %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n" 2644 "%12s\n", ST_HDR); 2645 else 2646 printf(" %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n", 2647 S_HDR); 2648 } else { 2649 if (re->options & RE_T) 2650 printf(" %s\n %-18s%-17s%-18s%s\n %-18s" 2651 "%-17s%-18s%s\n%12s\n", ST_HDRL); 2652 else 2653 printf(" %-23s%-17s%-18s%s\n %-18s%-17s%-7s%" 2654 "-6s%-6s%s\n", S_HDRL); 2655 } 2656 for (i = 0; (size_t)i < re->shnum; i++) { 2657 s = &re->sl[i]; 2658 if (re->ec == ELFCLASS32) { 2659 if (re->options & RE_T) 2660 printf(" [%2d] %s\n %-15.15s %8.8jx" 2661 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2662 " %s\n", ST_CT); 2663 else 2664 if (re->options & RE_WW) 2665 printf(" [%2d] %-17s %-15.15s " 2666 "%8.8jx %6.6jx %6.6jx %2.2jx %3s " 2667 "%2u %3u %2ju\n", S_CT); 2668 else 2669 printf(" [%2d] %-17.17s %-15.15s " 2670 "%8.8jx %6.6jx %6.6jx %2.2jx %3s " 2671 "%2u %3u %2ju\n", S_CT); 2672 } else if (re->options & RE_WW) { 2673 if (re->options & RE_T) 2674 printf(" [%2d] %s\n %-15.15s %16.16jx" 2675 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n" 2676 " %s\n", ST_CT); 2677 else 2678 printf(" [%2d] %-17s %-15.15s %16.16jx" 2679 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n", 2680 S_CT); 2681 } else { 2682 if (re->options & RE_T) 2683 printf(" [%2d] %s\n %-15.15s %16.16jx" 2684 " %16.16jx %u\n %16.16jx %16.16jx" 2685 " %-16u %ju\n %s\n", ST_CTL); 2686 else 2687 printf(" [%2d] %-17.17s %-15.15s %16.16jx" 2688 " %8.8jx\n %16.16jx %16.16jx " 2689 "%3s %2u %3u %ju\n", S_CT); 2690 } 2691 } 2692 if ((re->options & RE_T) == 0) 2693 printf("Key to Flags:\n W (write), A (alloc)," 2694 " X (execute), M (merge), S (strings)\n" 2695 " I (info), L (link order), G (group), x (unknown)\n" 2696 " O (extra OS processing required)" 2697 " o (OS specific), p (processor specific)\n"); 2698 2699 #undef S_HDR 2700 #undef S_HDRL 2701 #undef ST_HDR 2702 #undef ST_HDRL 2703 #undef S_CT 2704 #undef ST_CT 2705 #undef ST_CTL 2706 } 2707 2708 /* 2709 * Return number of entries in the given section. We'd prefer ent_count be a 2710 * size_t *, but libelf APIs already use int for section indices. 2711 */ 2712 static int 2713 get_ent_count(struct section *s, int *ent_count) 2714 { 2715 if (s->entsize == 0) { 2716 warnx("section %s has entry size 0", s->name); 2717 return (0); 2718 } else if (s->sz / s->entsize > INT_MAX) { 2719 warnx("section %s has invalid section count", s->name); 2720 return (0); 2721 } 2722 *ent_count = (int)(s->sz / s->entsize); 2723 return (1); 2724 } 2725 2726 static void 2727 dump_dynamic(struct readelf *re) 2728 { 2729 GElf_Dyn dyn; 2730 Elf_Data *d; 2731 struct section *s; 2732 int elferr, i, is_dynamic, j, jmax, nentries; 2733 2734 is_dynamic = 0; 2735 2736 for (i = 0; (size_t)i < re->shnum; i++) { 2737 s = &re->sl[i]; 2738 if (s->type != SHT_DYNAMIC) 2739 continue; 2740 (void) elf_errno(); 2741 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 2742 elferr = elf_errno(); 2743 if (elferr != 0) 2744 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 2745 continue; 2746 } 2747 if (d->d_size <= 0) 2748 continue; 2749 2750 is_dynamic = 1; 2751 2752 /* Determine the actual number of table entries. */ 2753 nentries = 0; 2754 if (!get_ent_count(s, &jmax)) 2755 continue; 2756 for (j = 0; j < jmax; j++) { 2757 if (gelf_getdyn(d, j, &dyn) != &dyn) { 2758 warnx("gelf_getdyn failed: %s", 2759 elf_errmsg(-1)); 2760 continue; 2761 } 2762 nentries ++; 2763 if (dyn.d_tag == DT_NULL) 2764 break; 2765 } 2766 2767 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off); 2768 printf(" contains %u entries:\n", nentries); 2769 2770 if (re->ec == ELFCLASS32) 2771 printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value"); 2772 else 2773 printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value"); 2774 2775 for (j = 0; j < nentries; j++) { 2776 if (gelf_getdyn(d, j, &dyn) != &dyn) 2777 continue; 2778 /* Dump dynamic entry type. */ 2779 if (re->ec == ELFCLASS32) 2780 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag); 2781 else 2782 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag); 2783 printf(" %-20s", dt_type(re->ehdr.e_machine, 2784 dyn.d_tag)); 2785 /* Dump dynamic entry value. */ 2786 dump_dyn_val(re, &dyn, s->link); 2787 } 2788 } 2789 2790 if (!is_dynamic) 2791 printf("\nThere is no dynamic section in this file.\n"); 2792 } 2793 2794 static char * 2795 timestamp(time_t ti) 2796 { 2797 static char ts[32]; 2798 struct tm *t; 2799 2800 t = gmtime(&ti); 2801 snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d", 2802 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, 2803 t->tm_min, t->tm_sec); 2804 2805 return (ts); 2806 } 2807 2808 static const char * 2809 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val) 2810 { 2811 const char *name; 2812 2813 if (stab == SHN_UNDEF) 2814 name = "ERROR"; 2815 else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) { 2816 (void) elf_errno(); /* clear error */ 2817 name = "ERROR"; 2818 } 2819 2820 return (name); 2821 } 2822 2823 static void 2824 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn) 2825 { 2826 switch (re->ehdr.e_machine) { 2827 case EM_MIPS: 2828 case EM_MIPS_RS3_LE: 2829 switch (dyn->d_tag) { 2830 case DT_MIPS_RLD_VERSION: 2831 case DT_MIPS_LOCAL_GOTNO: 2832 case DT_MIPS_CONFLICTNO: 2833 case DT_MIPS_LIBLISTNO: 2834 case DT_MIPS_SYMTABNO: 2835 case DT_MIPS_UNREFEXTNO: 2836 case DT_MIPS_GOTSYM: 2837 case DT_MIPS_HIPAGENO: 2838 case DT_MIPS_DELTA_CLASS_NO: 2839 case DT_MIPS_DELTA_INSTANCE_NO: 2840 case DT_MIPS_DELTA_RELOC_NO: 2841 case DT_MIPS_DELTA_SYM_NO: 2842 case DT_MIPS_DELTA_CLASSSYM_NO: 2843 case DT_MIPS_LOCALPAGE_GOTIDX: 2844 case DT_MIPS_LOCAL_GOTIDX: 2845 case DT_MIPS_HIDDEN_GOTIDX: 2846 case DT_MIPS_PROTECTED_GOTIDX: 2847 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 2848 break; 2849 case DT_MIPS_ICHECKSUM: 2850 case DT_MIPS_FLAGS: 2851 case DT_MIPS_BASE_ADDRESS: 2852 case DT_MIPS_CONFLICT: 2853 case DT_MIPS_LIBLIST: 2854 case DT_MIPS_RLD_MAP: 2855 case DT_MIPS_DELTA_CLASS: 2856 case DT_MIPS_DELTA_INSTANCE: 2857 case DT_MIPS_DELTA_RELOC: 2858 case DT_MIPS_DELTA_SYM: 2859 case DT_MIPS_DELTA_CLASSSYM: 2860 case DT_MIPS_CXX_FLAGS: 2861 case DT_MIPS_PIXIE_INIT: 2862 case DT_MIPS_SYMBOL_LIB: 2863 case DT_MIPS_OPTIONS: 2864 case DT_MIPS_INTERFACE: 2865 case DT_MIPS_DYNSTR_ALIGN: 2866 case DT_MIPS_INTERFACE_SIZE: 2867 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR: 2868 case DT_MIPS_COMPACT_SIZE: 2869 case DT_MIPS_GP_VALUE: 2870 case DT_MIPS_AUX_DYNAMIC: 2871 case DT_MIPS_PLTGOT: 2872 case DT_MIPS_RLD_OBJ_UPDATE: 2873 case DT_MIPS_RWPLT: 2874 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2875 break; 2876 case DT_MIPS_IVERSION: 2877 case DT_MIPS_PERF_SUFFIX: 2878 case DT_MIPS_TIME_STAMP: 2879 printf(" %s\n", timestamp(dyn->d_un.d_val)); 2880 break; 2881 default: 2882 printf("\n"); 2883 break; 2884 } 2885 break; 2886 default: 2887 printf("\n"); 2888 break; 2889 } 2890 } 2891 2892 static void 2893 dump_flags(struct flag_desc *desc, uint64_t val) 2894 { 2895 struct flag_desc *fd; 2896 2897 for (fd = desc; fd->flag != 0; fd++) { 2898 if (val & fd->flag) { 2899 val &= ~fd->flag; 2900 printf(" %s", fd->desc); 2901 } 2902 } 2903 if (val != 0) 2904 printf(" unknown (0x%jx)", (uintmax_t)val); 2905 printf("\n"); 2906 } 2907 2908 static struct flag_desc dt_flags[] = { 2909 { DF_ORIGIN, "ORIGIN" }, 2910 { DF_SYMBOLIC, "SYMBOLIC" }, 2911 { DF_TEXTREL, "TEXTREL" }, 2912 { DF_BIND_NOW, "BIND_NOW" }, 2913 { DF_STATIC_TLS, "STATIC_TLS" }, 2914 { 0, NULL } 2915 }; 2916 2917 static struct flag_desc dt_flags_1[] = { 2918 { DF_1_BIND_NOW, "NOW" }, 2919 { DF_1_GLOBAL, "GLOBAL" }, 2920 { 0x4, "GROUP" }, 2921 { DF_1_NODELETE, "NODELETE" }, 2922 { DF_1_LOADFLTR, "LOADFLTR" }, 2923 { 0x20, "INITFIRST" }, 2924 { DF_1_NOOPEN, "NOOPEN" }, 2925 { DF_1_ORIGIN, "ORIGIN" }, 2926 { 0x100, "DIRECT" }, 2927 { DF_1_INTERPOSE, "INTERPOSE" }, 2928 { DF_1_NODEFLIB, "NODEFLIB" }, 2929 { 0x1000, "NODUMP" }, 2930 { 0x2000, "CONFALT" }, 2931 { 0x4000, "ENDFILTEE" }, 2932 { 0x8000, "DISPRELDNE" }, 2933 { 0x10000, "DISPRELPND" }, 2934 { 0x20000, "NODIRECT" }, 2935 { 0x40000, "IGNMULDEF" }, 2936 { 0x80000, "NOKSYMS" }, 2937 { 0x100000, "NOHDR" }, 2938 { 0x200000, "EDITED" }, 2939 { 0x400000, "NORELOC" }, 2940 { 0x800000, "SYMINTPOSE" }, 2941 { 0x1000000, "GLOBAUDIT" }, 2942 { 0x02000000, "SINGLETON" }, 2943 { 0x04000000, "STUB" }, 2944 { DF_1_PIE, "PIE" }, 2945 { 0, NULL } 2946 }; 2947 2948 static void 2949 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab) 2950 { 2951 const char *name; 2952 2953 if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC && 2954 dyn->d_tag != DT_AUXILIARY && dyn->d_tag != DT_FILTER) { 2955 dump_arch_dyn_val(re, dyn); 2956 return; 2957 } 2958 2959 /* These entry values are index into the string table. */ 2960 name = NULL; 2961 if (dyn->d_tag == DT_AUXILIARY || dyn->d_tag == DT_FILTER || 2962 dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME || 2963 dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH) 2964 name = dyn_str(re, stab, dyn->d_un.d_val); 2965 2966 switch(dyn->d_tag) { 2967 case DT_NULL: 2968 case DT_PLTGOT: 2969 case DT_HASH: 2970 case DT_STRTAB: 2971 case DT_SYMTAB: 2972 case DT_RELA: 2973 case DT_INIT: 2974 case DT_SYMBOLIC: 2975 case DT_REL: 2976 case DT_DEBUG: 2977 case DT_TEXTREL: 2978 case DT_JMPREL: 2979 case DT_FINI: 2980 case DT_VERDEF: 2981 case DT_VERNEED: 2982 case DT_VERSYM: 2983 case DT_GNU_HASH: 2984 case DT_GNU_LIBLIST: 2985 case DT_GNU_CONFLICT: 2986 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val); 2987 break; 2988 case DT_PLTRELSZ: 2989 case DT_RELASZ: 2990 case DT_RELAENT: 2991 case DT_STRSZ: 2992 case DT_SYMENT: 2993 case DT_RELSZ: 2994 case DT_RELENT: 2995 case DT_PREINIT_ARRAYSZ: 2996 case DT_INIT_ARRAYSZ: 2997 case DT_FINI_ARRAYSZ: 2998 case DT_GNU_CONFLICTSZ: 2999 case DT_GNU_LIBLISTSZ: 3000 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val); 3001 break; 3002 case DT_RELACOUNT: 3003 case DT_RELCOUNT: 3004 case DT_VERDEFNUM: 3005 case DT_VERNEEDNUM: 3006 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val); 3007 break; 3008 case DT_AUXILIARY: 3009 printf(" Auxiliary library: [%s]\n", name); 3010 break; 3011 case DT_FILTER: 3012 printf(" Filter library: [%s]\n", name); 3013 break; 3014 case DT_NEEDED: 3015 printf(" Shared library: [%s]\n", name); 3016 break; 3017 case DT_SONAME: 3018 printf(" Library soname: [%s]\n", name); 3019 break; 3020 case DT_RPATH: 3021 printf(" Library rpath: [%s]\n", name); 3022 break; 3023 case DT_RUNPATH: 3024 printf(" Library runpath: [%s]\n", name); 3025 break; 3026 case DT_PLTREL: 3027 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val)); 3028 break; 3029 case DT_GNU_PRELINKED: 3030 printf(" %s\n", timestamp(dyn->d_un.d_val)); 3031 break; 3032 case DT_FLAGS: 3033 dump_flags(dt_flags, dyn->d_un.d_val); 3034 break; 3035 case DT_FLAGS_1: 3036 dump_flags(dt_flags_1, dyn->d_un.d_val); 3037 break; 3038 default: 3039 printf("\n"); 3040 } 3041 } 3042 3043 static void 3044 dump_rel(struct readelf *re, struct section *s, Elf_Data *d) 3045 { 3046 GElf_Rel r; 3047 const char *symname; 3048 uint64_t symval; 3049 int i, len; 3050 uint32_t type; 3051 uint8_t type2, type3; 3052 3053 if (s->link >= re->shnum) 3054 return; 3055 3056 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name" 3057 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3058 elftc_reloc_type_str(re->ehdr.e_machine, \ 3059 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 3060 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3061 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 3062 (uintmax_t)symval, symname 3063 3064 printf("\nRelocation section (%s):\n", s->name); 3065 if (re->ec == ELFCLASS32) 3066 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR); 3067 else { 3068 if (re->options & RE_WW) 3069 printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR); 3070 else 3071 printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR); 3072 } 3073 assert(d->d_size == s->sz); 3074 if (!get_ent_count(s, &len)) 3075 return; 3076 for (i = 0; i < len; i++) { 3077 if (gelf_getrel(d, i, &r) != &r) { 3078 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 3079 continue; 3080 } 3081 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 3082 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 3083 if (re->ec == ELFCLASS32) { 3084 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 3085 ELF64_R_TYPE(r.r_info)); 3086 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32); 3087 } else { 3088 type = ELF64_R_TYPE(r.r_info); 3089 if (re->ehdr.e_machine == EM_MIPS) { 3090 type2 = (type >> 8) & 0xFF; 3091 type3 = (type >> 16) & 0xFF; 3092 type = type & 0xFF; 3093 } else { 3094 type2 = type3 = 0; 3095 } 3096 if (re->options & RE_WW) 3097 printf("%16.16jx %16.16jx %-24.24s" 3098 " %16.16jx %s\n", REL_CT64); 3099 else 3100 printf("%12.12jx %12.12jx %-19.19s" 3101 " %16.16jx %s\n", REL_CT64); 3102 if (re->ehdr.e_machine == EM_MIPS) { 3103 if (re->options & RE_WW) { 3104 printf("%32s: %s\n", "Type2", 3105 elftc_reloc_type_str(EM_MIPS, 3106 type2)); 3107 printf("%32s: %s\n", "Type3", 3108 elftc_reloc_type_str(EM_MIPS, 3109 type3)); 3110 } else { 3111 printf("%24s: %s\n", "Type2", 3112 elftc_reloc_type_str(EM_MIPS, 3113 type2)); 3114 printf("%24s: %s\n", "Type3", 3115 elftc_reloc_type_str(EM_MIPS, 3116 type3)); 3117 } 3118 } 3119 } 3120 } 3121 3122 #undef REL_HDR 3123 #undef REL_CT 3124 } 3125 3126 static void 3127 dump_rela(struct readelf *re, struct section *s, Elf_Data *d) 3128 { 3129 GElf_Rela r; 3130 const char *symname; 3131 uint64_t symval; 3132 int i, len; 3133 uint32_t type; 3134 uint8_t type2, type3; 3135 3136 if (s->link >= re->shnum) 3137 return; 3138 3139 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \ 3140 "st_name + r_addend" 3141 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3142 elftc_reloc_type_str(re->ehdr.e_machine, \ 3143 ELF32_R_TYPE(r.r_info)), (uintmax_t)symval, symname 3144 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \ 3145 elftc_reloc_type_str(re->ehdr.e_machine, type), \ 3146 (uintmax_t)symval, symname 3147 3148 printf("\nRelocation section with addend (%s):\n", s->name); 3149 if (re->ec == ELFCLASS32) 3150 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR); 3151 else { 3152 if (re->options & RE_WW) 3153 printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR); 3154 else 3155 printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR); 3156 } 3157 assert(d->d_size == s->sz); 3158 if (!get_ent_count(s, &len)) 3159 return; 3160 for (i = 0; i < len; i++) { 3161 if (gelf_getrela(d, i, &r) != &r) { 3162 warnx("gelf_getrel failed: %s", elf_errmsg(-1)); 3163 continue; 3164 } 3165 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info)); 3166 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info)); 3167 if (re->ec == ELFCLASS32) { 3168 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info), 3169 ELF64_R_TYPE(r.r_info)); 3170 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32); 3171 printf(" + %x\n", (uint32_t) r.r_addend); 3172 } else { 3173 type = ELF64_R_TYPE(r.r_info); 3174 if (re->ehdr.e_machine == EM_MIPS) { 3175 type2 = (type >> 8) & 0xFF; 3176 type3 = (type >> 16) & 0xFF; 3177 type = type & 0xFF; 3178 } else { 3179 type2 = type3 = 0; 3180 } 3181 if (re->options & RE_WW) 3182 printf("%16.16jx %16.16jx %-24.24s" 3183 " %16.16jx %s", RELA_CT64); 3184 else 3185 printf("%12.12jx %12.12jx %-19.19s" 3186 " %16.16jx %s", RELA_CT64); 3187 printf(" + %jx\n", (uintmax_t) r.r_addend); 3188 if (re->ehdr.e_machine == EM_MIPS) { 3189 if (re->options & RE_WW) { 3190 printf("%32s: %s\n", "Type2", 3191 elftc_reloc_type_str(EM_MIPS, 3192 type2)); 3193 printf("%32s: %s\n", "Type3", 3194 elftc_reloc_type_str(EM_MIPS, 3195 type3)); 3196 } else { 3197 printf("%24s: %s\n", "Type2", 3198 elftc_reloc_type_str(EM_MIPS, 3199 type2)); 3200 printf("%24s: %s\n", "Type3", 3201 elftc_reloc_type_str(EM_MIPS, 3202 type3)); 3203 } 3204 } 3205 } 3206 } 3207 3208 #undef RELA_HDR 3209 #undef RELA_CT 3210 } 3211 3212 static void 3213 dump_reloc(struct readelf *re) 3214 { 3215 struct section *s; 3216 Elf_Data *d; 3217 int i, elferr; 3218 3219 for (i = 0; (size_t)i < re->shnum; i++) { 3220 s = &re->sl[i]; 3221 if (s->type == SHT_REL || s->type == SHT_RELA) { 3222 (void) elf_errno(); 3223 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3224 elferr = elf_errno(); 3225 if (elferr != 0) 3226 warnx("elf_getdata failed: %s", 3227 elf_errmsg(elferr)); 3228 continue; 3229 } 3230 if (s->type == SHT_REL) 3231 dump_rel(re, s, d); 3232 else 3233 dump_rela(re, s, d); 3234 } 3235 } 3236 } 3237 3238 static void 3239 dump_symtab(struct readelf *re, int i) 3240 { 3241 struct section *s; 3242 Elf_Data *d; 3243 GElf_Sym sym; 3244 const char *name; 3245 uint32_t stab; 3246 int elferr, j, len; 3247 uint16_t vs; 3248 3249 s = &re->sl[i]; 3250 if (s->link >= re->shnum) 3251 return; 3252 stab = s->link; 3253 (void) elf_errno(); 3254 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3255 elferr = elf_errno(); 3256 if (elferr != 0) 3257 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3258 return; 3259 } 3260 if (d->d_size <= 0) 3261 return; 3262 if (!get_ent_count(s, &len)) 3263 return; 3264 printf("Symbol table (%s)", s->name); 3265 printf(" contains %d entries:\n", len); 3266 printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type", 3267 "Bind", "Vis", "Ndx", "Name"); 3268 3269 for (j = 0; j < len; j++) { 3270 if (gelf_getsym(d, j, &sym) != &sym) { 3271 warnx("gelf_getsym failed: %s", elf_errmsg(-1)); 3272 continue; 3273 } 3274 printf("%6d:", j); 3275 printf(" %16.16jx", (uintmax_t) sym.st_value); 3276 printf(" %5ju", (uintmax_t) sym.st_size); 3277 printf(" %-7s", st_type(re->ehdr.e_machine, 3278 re->ehdr.e_ident[EI_OSABI], GELF_ST_TYPE(sym.st_info))); 3279 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info))); 3280 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other))); 3281 printf(" %3s", st_shndx(sym.st_shndx)); 3282 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL) 3283 printf(" %s", name); 3284 /* Append symbol version string for SHT_DYNSYM symbol table. */ 3285 if (s->type == SHT_DYNSYM && re->ver != NULL && 3286 re->vs != NULL && re->vs[j] > 1) { 3287 vs = re->vs[j] & VERSYM_VERSION; 3288 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 3289 warnx("invalid versym version index %u", vs); 3290 break; 3291 } 3292 if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0) 3293 printf("@%s (%d)", re->ver[vs].name, vs); 3294 else 3295 printf("@@%s (%d)", re->ver[vs].name, vs); 3296 } 3297 putchar('\n'); 3298 } 3299 3300 } 3301 3302 static void 3303 dump_symtabs(struct readelf *re) 3304 { 3305 GElf_Dyn dyn; 3306 Elf_Data *d; 3307 struct section *s; 3308 uint64_t dyn_off; 3309 int elferr, i, len; 3310 3311 /* 3312 * If -D is specified, only dump the symbol table specified by 3313 * the DT_SYMTAB entry in the .dynamic section. 3314 */ 3315 dyn_off = 0; 3316 if (re->options & RE_DD) { 3317 s = NULL; 3318 for (i = 0; (size_t)i < re->shnum; i++) 3319 if (re->sl[i].type == SHT_DYNAMIC) { 3320 s = &re->sl[i]; 3321 break; 3322 } 3323 if (s == NULL) 3324 return; 3325 (void) elf_errno(); 3326 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3327 elferr = elf_errno(); 3328 if (elferr != 0) 3329 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 3330 return; 3331 } 3332 if (d->d_size <= 0) 3333 return; 3334 if (!get_ent_count(s, &len)) 3335 return; 3336 3337 for (i = 0; i < len; i++) { 3338 if (gelf_getdyn(d, i, &dyn) != &dyn) { 3339 warnx("gelf_getdyn failed: %s", elf_errmsg(-1)); 3340 continue; 3341 } 3342 if (dyn.d_tag == DT_SYMTAB) { 3343 dyn_off = dyn.d_un.d_val; 3344 break; 3345 } 3346 } 3347 } 3348 3349 /* Find and dump symbol tables. */ 3350 for (i = 0; (size_t)i < re->shnum; i++) { 3351 s = &re->sl[i]; 3352 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) { 3353 if (re->options & RE_DD) { 3354 if (dyn_off == s->addr) { 3355 dump_symtab(re, i); 3356 break; 3357 } 3358 } else 3359 dump_symtab(re, i); 3360 } 3361 } 3362 } 3363 3364 static void 3365 dump_svr4_hash(struct section *s) 3366 { 3367 Elf_Data *d; 3368 uint32_t *buf; 3369 uint32_t nbucket, nchain; 3370 uint32_t *bucket, *chain; 3371 uint32_t *bl, *c, maxl, total; 3372 int elferr, i, j; 3373 3374 /* Read and parse the content of .hash section. */ 3375 (void) elf_errno(); 3376 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3377 elferr = elf_errno(); 3378 if (elferr != 0) 3379 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3380 return; 3381 } 3382 if (d->d_size < 2 * sizeof(uint32_t)) { 3383 warnx(".hash section too small"); 3384 return; 3385 } 3386 buf = d->d_buf; 3387 nbucket = buf[0]; 3388 nchain = buf[1]; 3389 if (nbucket <= 0 || nchain <= 0) { 3390 warnx("Malformed .hash section"); 3391 return; 3392 } 3393 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3394 warnx("Malformed .hash section"); 3395 return; 3396 } 3397 bucket = &buf[2]; 3398 chain = &buf[2 + nbucket]; 3399 3400 maxl = 0; 3401 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3402 errx(EXIT_FAILURE, "calloc failed"); 3403 for (i = 0; (uint32_t)i < nbucket; i++) 3404 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3405 if (++bl[i] > maxl) 3406 maxl = bl[i]; 3407 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3408 errx(EXIT_FAILURE, "calloc failed"); 3409 for (i = 0; (uint32_t)i < nbucket; i++) 3410 c[bl[i]]++; 3411 printf("\nHistogram for bucket list length (total of %u buckets):\n", 3412 nbucket); 3413 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3414 total = 0; 3415 for (i = 0; (uint32_t)i <= maxl; i++) { 3416 total += c[i] * i; 3417 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3418 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3419 } 3420 free(c); 3421 free(bl); 3422 } 3423 3424 static void 3425 dump_svr4_hash64(struct readelf *re, struct section *s) 3426 { 3427 Elf_Data *d, dst; 3428 uint64_t *buf; 3429 uint64_t nbucket, nchain; 3430 uint64_t *bucket, *chain; 3431 uint64_t *bl, *c, maxl, total; 3432 int elferr, i, j; 3433 3434 /* 3435 * ALPHA uses 64-bit hash entries. Since libelf assumes that 3436 * .hash section contains only 32-bit entry, an explicit 3437 * gelf_xlatetom is needed here. 3438 */ 3439 (void) elf_errno(); 3440 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 3441 elferr = elf_errno(); 3442 if (elferr != 0) 3443 warnx("elf_rawdata failed: %s", 3444 elf_errmsg(elferr)); 3445 return; 3446 } 3447 d->d_type = ELF_T_XWORD; 3448 memcpy(&dst, d, sizeof(Elf_Data)); 3449 if (gelf_xlatetom(re->elf, &dst, d, 3450 re->ehdr.e_ident[EI_DATA]) != &dst) { 3451 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1)); 3452 return; 3453 } 3454 if (dst.d_size < 2 * sizeof(uint64_t)) { 3455 warnx(".hash section too small"); 3456 return; 3457 } 3458 buf = dst.d_buf; 3459 nbucket = buf[0]; 3460 nchain = buf[1]; 3461 if (nbucket <= 0 || nchain <= 0) { 3462 warnx("Malformed .hash section"); 3463 return; 3464 } 3465 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) { 3466 warnx("Malformed .hash section"); 3467 return; 3468 } 3469 bucket = &buf[2]; 3470 chain = &buf[2 + nbucket]; 3471 3472 maxl = 0; 3473 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3474 errx(EXIT_FAILURE, "calloc failed"); 3475 for (i = 0; (uint32_t)i < nbucket; i++) 3476 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j]) 3477 if (++bl[i] > maxl) 3478 maxl = bl[i]; 3479 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3480 errx(EXIT_FAILURE, "calloc failed"); 3481 for (i = 0; (uint64_t)i < nbucket; i++) 3482 c[bl[i]]++; 3483 printf("Histogram for bucket list length (total of %ju buckets):\n", 3484 (uintmax_t)nbucket); 3485 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3486 total = 0; 3487 for (i = 0; (uint64_t)i <= maxl; i++) { 3488 total += c[i] * i; 3489 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i], 3490 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3491 } 3492 free(c); 3493 free(bl); 3494 } 3495 3496 static void 3497 dump_gnu_hash(struct readelf *re, struct section *s) 3498 { 3499 struct section *ds; 3500 Elf_Data *d; 3501 uint32_t *buf; 3502 uint32_t *bucket, *chain; 3503 uint32_t nbucket, nchain, symndx, maskwords; 3504 uint32_t *bl, *c, maxl, total; 3505 int elferr, dynsymcount, i, j; 3506 3507 (void) elf_errno(); 3508 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3509 elferr = elf_errno(); 3510 if (elferr != 0) 3511 warnx("elf_getdata failed: %s", 3512 elf_errmsg(elferr)); 3513 return; 3514 } 3515 if (d->d_size < 4 * sizeof(uint32_t)) { 3516 warnx(".gnu.hash section too small"); 3517 return; 3518 } 3519 buf = d->d_buf; 3520 nbucket = buf[0]; 3521 symndx = buf[1]; 3522 maskwords = buf[2]; 3523 buf += 4; 3524 if (s->link >= re->shnum) 3525 return; 3526 ds = &re->sl[s->link]; 3527 if (!get_ent_count(ds, &dynsymcount)) 3528 return; 3529 if (symndx >= (uint32_t)dynsymcount) { 3530 warnx("Malformed .gnu.hash section (symndx out of range)"); 3531 return; 3532 } 3533 nchain = dynsymcount - symndx; 3534 if (d->d_size != 4 * sizeof(uint32_t) + maskwords * 3535 (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) + 3536 (nbucket + nchain) * sizeof(uint32_t)) { 3537 warnx("Malformed .gnu.hash section"); 3538 return; 3539 } 3540 bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2); 3541 chain = bucket + nbucket; 3542 3543 maxl = 0; 3544 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL) 3545 errx(EXIT_FAILURE, "calloc failed"); 3546 for (i = 0; (uint32_t)i < nbucket; i++) 3547 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain; 3548 j++) { 3549 if (++bl[i] > maxl) 3550 maxl = bl[i]; 3551 if (chain[j - symndx] & 1) 3552 break; 3553 } 3554 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL) 3555 errx(EXIT_FAILURE, "calloc failed"); 3556 for (i = 0; (uint32_t)i < nbucket; i++) 3557 c[bl[i]]++; 3558 printf("Histogram for bucket list length (total of %u buckets):\n", 3559 nbucket); 3560 printf(" Length\tNumber\t\t%% of total\tCoverage\n"); 3561 total = 0; 3562 for (i = 0; (uint32_t)i <= maxl; i++) { 3563 total += c[i] * i; 3564 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i], 3565 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1)); 3566 } 3567 free(c); 3568 free(bl); 3569 } 3570 3571 static struct flag_desc gnu_property_aarch64_feature_1_and_bits[] = { 3572 { GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI" }, 3573 { GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC" }, 3574 { 0, NULL } 3575 }; 3576 3577 static struct flag_desc_list gnu_property_aarch64[] = { 3578 { 3579 GNU_PROPERTY_AARCH64_FEATURE_1_AND, 3580 "AArch64 features", 3581 gnu_property_aarch64_feature_1_and_bits 3582 }, 3583 { 0, NULL, NULL } 3584 }; 3585 3586 static struct flag_desc gnu_property_x86_feature_1_and_bits[] = { 3587 { GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT" }, 3588 { GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK" }, 3589 { 0, NULL } 3590 }; 3591 3592 static struct flag_desc_list gnu_property_x86[] = { 3593 { 3594 GNU_PROPERTY_X86_FEATURE_1_AND, 3595 "x64 features", 3596 gnu_property_x86_feature_1_and_bits 3597 }, 3598 { 0, NULL, NULL } 3599 }; 3600 3601 static struct { 3602 unsigned int emachine; 3603 struct flag_desc_list *flag_list; 3604 } gnu_property_archs[] = { 3605 { EM_AARCH64, gnu_property_aarch64 }, 3606 { EM_X86_64, gnu_property_x86 }, 3607 { 0, NULL } 3608 }; 3609 3610 static void 3611 dump_gnu_property_type_0(struct readelf *re, const char *buf, size_t sz) 3612 { 3613 struct flag_desc_list *desc_list; 3614 struct flag_desc *desc; 3615 size_t i; 3616 uint32_t type, prop_sz; 3617 3618 printf(" Properties: "); 3619 while (sz > 0) { 3620 if (sz < 8) 3621 goto bad; 3622 3623 type = *(const uint32_t *)(const void *)buf; 3624 prop_sz = *(const uint32_t *)(const void *)(buf + 4); 3625 buf += 8; 3626 sz -= 8; 3627 3628 if (prop_sz > sz) 3629 goto bad; 3630 3631 if (type >= GNU_PROPERTY_LOPROC && 3632 type <= GNU_PROPERTY_HIPROC) { 3633 desc_list = NULL; 3634 for (i = 0; gnu_property_archs[i].flag_list != NULL; 3635 i++) { 3636 if (gnu_property_archs[i].emachine == 3637 re->ehdr.e_machine) { 3638 desc_list = 3639 gnu_property_archs[i].flag_list; 3640 break; 3641 } 3642 } 3643 if (desc_list == NULL) { 3644 printf("machine type %x unknown\n", 3645 re->ehdr.e_machine); 3646 goto unknown; 3647 } 3648 3649 desc = NULL; 3650 for (i = 0; desc_list[i].desc != NULL; i++) { 3651 if (desc_list[i].type == type) { 3652 desc = desc_list[i].desc; 3653 break; 3654 } 3655 } 3656 if (desc != NULL) { 3657 printf("%s:", desc_list[i].desc_str); 3658 if (prop_sz != 4) 3659 goto bad; 3660 dump_flags(desc, 3661 *(const uint32_t *)(const void *)buf); 3662 } 3663 } 3664 3665 buf += roundup2(prop_sz, 8); 3666 sz -= roundup2(prop_sz, 8); 3667 } 3668 return; 3669 bad: 3670 printf("corrupt GNU property\n"); 3671 unknown: 3672 printf("remaining description data:"); 3673 for (i = 0; i < sz; i++) 3674 printf(" %02x", (unsigned char)buf[i]); 3675 printf("\n"); 3676 } 3677 3678 static void 3679 dump_hash(struct readelf *re) 3680 { 3681 struct section *s; 3682 int i; 3683 3684 for (i = 0; (size_t) i < re->shnum; i++) { 3685 s = &re->sl[i]; 3686 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) { 3687 if (s->type == SHT_GNU_HASH) 3688 dump_gnu_hash(re, s); 3689 else if (re->ehdr.e_machine == EM_ALPHA && 3690 s->entsize == 8) 3691 dump_svr4_hash64(re, s); 3692 else 3693 dump_svr4_hash(s); 3694 } 3695 } 3696 } 3697 3698 static void 3699 dump_notes(struct readelf *re) 3700 { 3701 struct section *s; 3702 const char *rawfile; 3703 GElf_Phdr phdr; 3704 Elf_Data *d; 3705 size_t filesize, phnum; 3706 int i, elferr; 3707 3708 if (re->ehdr.e_type == ET_CORE) { 3709 /* 3710 * Search program headers in the core file for 3711 * PT_NOTE entry. 3712 */ 3713 if (elf_getphnum(re->elf, &phnum) == 0) { 3714 warnx("elf_getphnum failed: %s", elf_errmsg(-1)); 3715 return; 3716 } 3717 if (phnum == 0) 3718 return; 3719 if ((rawfile = elf_rawfile(re->elf, &filesize)) == NULL) { 3720 warnx("elf_rawfile failed: %s", elf_errmsg(-1)); 3721 return; 3722 } 3723 for (i = 0; (size_t) i < phnum; i++) { 3724 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) { 3725 warnx("gelf_getphdr failed: %s", 3726 elf_errmsg(-1)); 3727 continue; 3728 } 3729 if (phdr.p_type == PT_NOTE) { 3730 if (phdr.p_offset >= filesize || 3731 phdr.p_filesz > filesize - phdr.p_offset) { 3732 warnx("invalid PHDR offset"); 3733 continue; 3734 } 3735 dump_notes_content(re, rawfile + phdr.p_offset, 3736 phdr.p_filesz, phdr.p_offset); 3737 } 3738 } 3739 3740 } else { 3741 /* 3742 * For objects other than core files, Search for 3743 * SHT_NOTE sections. 3744 */ 3745 for (i = 0; (size_t) i < re->shnum; i++) { 3746 s = &re->sl[i]; 3747 if (s->type == SHT_NOTE) { 3748 (void) elf_errno(); 3749 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3750 elferr = elf_errno(); 3751 if (elferr != 0) 3752 warnx("elf_getdata failed: %s", 3753 elf_errmsg(elferr)); 3754 continue; 3755 } 3756 dump_notes_content(re, d->d_buf, d->d_size, 3757 s->off); 3758 } 3759 } 3760 } 3761 } 3762 3763 static struct flag_desc note_feature_ctl_flags[] = { 3764 { NT_FREEBSD_FCTL_ASLR_DISABLE, "ASLR_DISABLE" }, 3765 { NT_FREEBSD_FCTL_PROTMAX_DISABLE, "PROTMAX_DISABLE" }, 3766 { NT_FREEBSD_FCTL_STKGAP_DISABLE, "STKGAP_DISABLE" }, 3767 { NT_FREEBSD_FCTL_WXNEEDED, "WXNEEDED" }, 3768 { NT_FREEBSD_FCTL_LA48, "LA48" }, 3769 { 0, NULL } 3770 }; 3771 3772 static bool 3773 dump_note_string(const char *description, const char *s, size_t len) 3774 { 3775 size_t i; 3776 3777 if (len == 0 || s[--len] != '\0') { 3778 return (false); 3779 } else { 3780 for (i = 0; i < len; i++) 3781 if (!isprint(s[i])) 3782 return (false); 3783 } 3784 3785 printf(" %s: %s\n", description, s); 3786 return (true); 3787 } 3788 3789 struct note_desc { 3790 uint32_t type; 3791 const char *description; 3792 bool (*fp)(const char *, const char *, size_t); 3793 }; 3794 3795 static struct note_desc xen_notes[] = { 3796 { 5, "Xen version", dump_note_string }, 3797 { 6, "Guest OS", dump_note_string }, 3798 { 7, "Guest version", dump_note_string }, 3799 { 8, "Loader", dump_note_string }, 3800 { 9, "PAE mode", dump_note_string }, 3801 { 10, "Features", dump_note_string }, 3802 { 11, "BSD symtab", dump_note_string }, 3803 { 0, NULL, NULL } 3804 }; 3805 3806 static void 3807 dump_notes_data(struct readelf *re, const char *name, uint32_t type, 3808 const char *buf, size_t sz) 3809 { 3810 struct note_desc *nd; 3811 size_t i; 3812 const uint32_t *ubuf; 3813 3814 /* Note data is at least 4-byte aligned. */ 3815 if (((uintptr_t)buf & 3) != 0) { 3816 warnx("bad note data alignment"); 3817 goto unknown; 3818 } 3819 ubuf = (const uint32_t *)(const void *)buf; 3820 3821 if (strcmp(name, "FreeBSD") == 0) { 3822 switch (type) { 3823 case NT_FREEBSD_ABI_TAG: 3824 if (sz != 4) 3825 goto unknown; 3826 printf(" ABI tag: %u\n", ubuf[0]); 3827 return; 3828 /* NT_FREEBSD_NOINIT_TAG carries no data, treat as unknown. */ 3829 case NT_FREEBSD_ARCH_TAG: 3830 printf(" Arch tag: %s\n", buf); 3831 return; 3832 case NT_FREEBSD_FEATURE_CTL: 3833 if (sz != 4) 3834 goto unknown; 3835 printf(" Features:"); 3836 dump_flags(note_feature_ctl_flags, ubuf[0]); 3837 return; 3838 } 3839 } else if (strcmp(name, "Go") == 0) { 3840 if (type == 4) { 3841 printf(" Build ID: "); 3842 for (i = 0; i < sz; i++) { 3843 printf(isprint(buf[i]) ? "%c" : "<%02x>", 3844 buf[i]); 3845 } 3846 printf("\n"); 3847 return; 3848 } 3849 } else if (strcmp(name, "GNU") == 0) { 3850 switch (type) { 3851 case NT_GNU_PROPERTY_TYPE_0: 3852 dump_gnu_property_type_0(re, buf, sz); 3853 return; 3854 case NT_GNU_BUILD_ID: 3855 printf(" Build ID: "); 3856 for (i = 0; i < sz; i++) 3857 printf("%02x", (unsigned char)buf[i]); 3858 printf("\n"); 3859 return; 3860 } 3861 } else if (strcmp(name, "Xen") == 0) { 3862 for (nd = xen_notes; nd->description != NULL; nd++) { 3863 if (nd->type == type) { 3864 if (nd->fp(nd->description, buf, sz)) 3865 return; 3866 else 3867 break; 3868 } 3869 } 3870 } 3871 unknown: 3872 printf(" description data:"); 3873 for (i = 0; i < sz; i++) 3874 printf(" %02x", (unsigned char)buf[i]); 3875 printf("\n"); 3876 } 3877 3878 static void 3879 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off) 3880 { 3881 Elf_Note *note; 3882 const char *end, *name; 3883 uint32_t namesz, descsz; 3884 3885 printf("\nNotes at offset %#010jx with length %#010jx:\n", 3886 (uintmax_t) off, (uintmax_t) sz); 3887 printf(" %-13s %-15s %s\n", "Owner", "Data size", "Description"); 3888 end = buf + sz; 3889 while (buf < end) { 3890 if (buf + sizeof(*note) > end) { 3891 warnx("invalid note header"); 3892 return; 3893 } 3894 note = (Elf_Note *)(uintptr_t) buf; 3895 namesz = roundup2(note->n_namesz, 4); 3896 descsz = roundup2(note->n_descsz, 4); 3897 if (namesz < note->n_namesz || descsz < note->n_descsz || 3898 buf + namesz + descsz > end) { 3899 warnx("invalid note header"); 3900 return; 3901 } 3902 buf += sizeof(Elf_Note); 3903 name = buf; 3904 buf += namesz; 3905 /* 3906 * The name field is required to be nul-terminated, and 3907 * n_namesz includes the terminating nul in observed 3908 * implementations (contrary to the ELF-64 spec). A special 3909 * case is needed for cores generated by some older Linux 3910 * versions, which write a note named "CORE" without a nul 3911 * terminator and n_namesz = 4. 3912 */ 3913 if (note->n_namesz == 0) 3914 name = ""; 3915 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0) 3916 name = "CORE"; 3917 else if (strnlen(name, note->n_namesz) >= note->n_namesz) 3918 name = "<invalid>"; 3919 printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz); 3920 printf(" %s\n", note_type(name, re->ehdr.e_type, 3921 note->n_type)); 3922 dump_notes_data(re, name, note->n_type, buf, note->n_descsz); 3923 buf += descsz; 3924 } 3925 } 3926 3927 /* 3928 * Symbol versioning sections are the same for 32bit and 64bit 3929 * ELF objects. 3930 */ 3931 #define Elf_Verdef Elf32_Verdef 3932 #define Elf_Verdaux Elf32_Verdaux 3933 #define Elf_Verneed Elf32_Verneed 3934 #define Elf_Vernaux Elf32_Vernaux 3935 3936 #define SAVE_VERSION_NAME(x, n, t) \ 3937 do { \ 3938 while (x >= re->ver_sz) { \ 3939 nv = realloc(re->ver, \ 3940 sizeof(*re->ver) * re->ver_sz * 2); \ 3941 if (nv == NULL) { \ 3942 warn("realloc failed"); \ 3943 free(re->ver); \ 3944 return; \ 3945 } \ 3946 re->ver = nv; \ 3947 for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \ 3948 re->ver[i].name = NULL; \ 3949 re->ver[i].type = 0; \ 3950 } \ 3951 re->ver_sz *= 2; \ 3952 } \ 3953 if (x > 1) { \ 3954 re->ver[x].name = n; \ 3955 re->ver[x].type = t; \ 3956 } \ 3957 } while (0) 3958 3959 3960 static void 3961 dump_verdef(struct readelf *re, int dump) 3962 { 3963 struct section *s; 3964 struct symver *nv; 3965 Elf_Data *d; 3966 Elf_Verdef *vd; 3967 Elf_Verdaux *vda; 3968 uint8_t *buf, *end, *buf2; 3969 const char *name; 3970 int elferr, i, j; 3971 3972 if ((s = re->vd_s) == NULL) 3973 return; 3974 if (s->link >= re->shnum) 3975 return; 3976 3977 if (re->ver == NULL) { 3978 re->ver_sz = 16; 3979 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 3980 NULL) { 3981 warn("calloc failed"); 3982 return; 3983 } 3984 re->ver[0].name = "*local*"; 3985 re->ver[1].name = "*global*"; 3986 } 3987 3988 if (dump) 3989 printf("\nVersion definition section (%s):\n", s->name); 3990 (void) elf_errno(); 3991 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 3992 elferr = elf_errno(); 3993 if (elferr != 0) 3994 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 3995 return; 3996 } 3997 if (d->d_size == 0) 3998 return; 3999 4000 buf = d->d_buf; 4001 end = buf + d->d_size; 4002 while (buf + sizeof(Elf_Verdef) <= end) { 4003 vd = (Elf_Verdef *) (uintptr_t) buf; 4004 if (dump) { 4005 printf(" 0x%4.4lx", (unsigned long) 4006 (buf - (uint8_t *)d->d_buf)); 4007 printf(" vd_version: %u vd_flags: %d" 4008 " vd_ndx: %u vd_cnt: %u", vd->vd_version, 4009 vd->vd_flags, vd->vd_ndx, vd->vd_cnt); 4010 } 4011 buf2 = buf + vd->vd_aux; 4012 j = 0; 4013 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) { 4014 vda = (Elf_Verdaux *) (uintptr_t) buf2; 4015 name = get_string(re, s->link, vda->vda_name); 4016 if (j == 0) { 4017 if (dump) 4018 printf(" vda_name: %s\n", name); 4019 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1); 4020 } else if (dump) 4021 printf(" 0x%4.4lx parent: %s\n", 4022 (unsigned long) (buf2 - 4023 (uint8_t *)d->d_buf), name); 4024 if (vda->vda_next == 0) 4025 break; 4026 buf2 += vda->vda_next; 4027 j++; 4028 } 4029 if (vd->vd_next == 0) 4030 break; 4031 buf += vd->vd_next; 4032 } 4033 } 4034 4035 static void 4036 dump_verneed(struct readelf *re, int dump) 4037 { 4038 struct section *s; 4039 struct symver *nv; 4040 Elf_Data *d; 4041 Elf_Verneed *vn; 4042 Elf_Vernaux *vna; 4043 uint8_t *buf, *end, *buf2; 4044 const char *name; 4045 int elferr, i, j; 4046 4047 if ((s = re->vn_s) == NULL) 4048 return; 4049 if (s->link >= re->shnum) 4050 return; 4051 4052 if (re->ver == NULL) { 4053 re->ver_sz = 16; 4054 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) == 4055 NULL) { 4056 warn("calloc failed"); 4057 return; 4058 } 4059 re->ver[0].name = "*local*"; 4060 re->ver[1].name = "*global*"; 4061 } 4062 4063 if (dump) 4064 printf("\nVersion needed section (%s):\n", s->name); 4065 (void) elf_errno(); 4066 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4067 elferr = elf_errno(); 4068 if (elferr != 0) 4069 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 4070 return; 4071 } 4072 if (d->d_size == 0) 4073 return; 4074 4075 buf = d->d_buf; 4076 end = buf + d->d_size; 4077 while (buf + sizeof(Elf_Verneed) <= end) { 4078 vn = (Elf_Verneed *) (uintptr_t) buf; 4079 if (dump) { 4080 printf(" 0x%4.4lx", (unsigned long) 4081 (buf - (uint8_t *)d->d_buf)); 4082 printf(" vn_version: %u vn_file: %s vn_cnt: %u\n", 4083 vn->vn_version, 4084 get_string(re, s->link, vn->vn_file), 4085 vn->vn_cnt); 4086 } 4087 buf2 = buf + vn->vn_aux; 4088 j = 0; 4089 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) { 4090 vna = (Elf32_Vernaux *) (uintptr_t) buf2; 4091 if (dump) 4092 printf(" 0x%4.4lx", (unsigned long) 4093 (buf2 - (uint8_t *)d->d_buf)); 4094 name = get_string(re, s->link, vna->vna_name); 4095 if (dump) 4096 printf(" vna_name: %s vna_flags: %u" 4097 " vna_other: %u\n", name, 4098 vna->vna_flags, vna->vna_other); 4099 SAVE_VERSION_NAME((int)vna->vna_other, name, 0); 4100 if (vna->vna_next == 0) 4101 break; 4102 buf2 += vna->vna_next; 4103 j++; 4104 } 4105 if (vn->vn_next == 0) 4106 break; 4107 buf += vn->vn_next; 4108 } 4109 } 4110 4111 static void 4112 dump_versym(struct readelf *re) 4113 { 4114 int i; 4115 uint16_t vs; 4116 4117 if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL) 4118 return; 4119 printf("\nVersion symbol section (%s):\n", re->vs_s->name); 4120 for (i = 0; i < re->vs_sz; i++) { 4121 if ((i & 3) == 0) { 4122 if (i > 0) 4123 putchar('\n'); 4124 printf(" %03x:", i); 4125 } 4126 vs = re->vs[i] & VERSYM_VERSION; 4127 if (vs >= re->ver_sz || re->ver[vs].name == NULL) { 4128 warnx("invalid versym version index %u", re->vs[i]); 4129 break; 4130 } 4131 if (re->vs[i] & VERSYM_HIDDEN) 4132 printf(" %3xh %-12s ", vs, 4133 re->ver[re->vs[i] & VERSYM_VERSION].name); 4134 else 4135 printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name); 4136 } 4137 putchar('\n'); 4138 } 4139 4140 static void 4141 dump_ver(struct readelf *re) 4142 { 4143 4144 if (re->vs_s && re->ver && re->vs) 4145 dump_versym(re); 4146 if (re->vd_s) 4147 dump_verdef(re, 1); 4148 if (re->vn_s) 4149 dump_verneed(re, 1); 4150 } 4151 4152 static void 4153 search_ver(struct readelf *re) 4154 { 4155 struct section *s; 4156 Elf_Data *d; 4157 int elferr, i; 4158 4159 for (i = 0; (size_t) i < re->shnum; i++) { 4160 s = &re->sl[i]; 4161 if (s->type == SHT_SUNW_versym) 4162 re->vs_s = s; 4163 if (s->type == SHT_SUNW_verneed) 4164 re->vn_s = s; 4165 if (s->type == SHT_SUNW_verdef) 4166 re->vd_s = s; 4167 } 4168 if (re->vd_s) 4169 dump_verdef(re, 0); 4170 if (re->vn_s) 4171 dump_verneed(re, 0); 4172 if (re->vs_s && re->ver != NULL) { 4173 (void) elf_errno(); 4174 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) { 4175 elferr = elf_errno(); 4176 if (elferr != 0) 4177 warnx("elf_getdata failed: %s", 4178 elf_errmsg(elferr)); 4179 return; 4180 } 4181 if (d->d_size == 0) 4182 return; 4183 re->vs = d->d_buf; 4184 re->vs_sz = d->d_size / sizeof(Elf32_Half); 4185 } 4186 } 4187 4188 #undef Elf_Verdef 4189 #undef Elf_Verdaux 4190 #undef Elf_Verneed 4191 #undef Elf_Vernaux 4192 #undef SAVE_VERSION_NAME 4193 4194 /* 4195 * Elf32_Lib and Elf64_Lib are identical. 4196 */ 4197 #define Elf_Lib Elf32_Lib 4198 4199 static void 4200 dump_liblist(struct readelf *re) 4201 { 4202 struct section *s; 4203 struct tm *t; 4204 time_t ti; 4205 char tbuf[20]; 4206 Elf_Data *d; 4207 Elf_Lib *lib; 4208 int i, j, k, elferr, first, len; 4209 4210 for (i = 0; (size_t) i < re->shnum; i++) { 4211 s = &re->sl[i]; 4212 if (s->type != SHT_GNU_LIBLIST) 4213 continue; 4214 if (s->link >= re->shnum) 4215 continue; 4216 (void) elf_errno(); 4217 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4218 elferr = elf_errno(); 4219 if (elferr != 0) 4220 warnx("elf_getdata failed: %s", 4221 elf_errmsg(elferr)); 4222 continue; 4223 } 4224 if (d->d_size <= 0) 4225 continue; 4226 lib = d->d_buf; 4227 if (!get_ent_count(s, &len)) 4228 continue; 4229 printf("\nLibrary list section '%s' ", s->name); 4230 printf("contains %d entries:\n", len); 4231 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp", 4232 "Checksum", "Version", "Flags"); 4233 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) { 4234 printf("%3d: ", j); 4235 printf("%-20.20s ", 4236 get_string(re, s->link, lib->l_name)); 4237 ti = lib->l_time_stamp; 4238 t = gmtime(&ti); 4239 snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d" 4240 ":%2d", t->tm_year + 1900, t->tm_mon + 1, 4241 t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec); 4242 printf("%-19.19s ", tbuf); 4243 printf("0x%08x ", lib->l_checksum); 4244 printf("%-7d %#x", lib->l_version, lib->l_flags); 4245 if (lib->l_flags != 0) { 4246 first = 1; 4247 putchar('('); 4248 for (k = 0; l_flag[k].name != NULL; k++) { 4249 if ((l_flag[k].value & lib->l_flags) == 4250 0) 4251 continue; 4252 if (!first) 4253 putchar(','); 4254 else 4255 first = 0; 4256 printf("%s", l_flag[k].name); 4257 } 4258 putchar(')'); 4259 } 4260 putchar('\n'); 4261 lib++; 4262 } 4263 } 4264 } 4265 4266 #undef Elf_Lib 4267 4268 static void 4269 dump_section_groups(struct readelf *re) 4270 { 4271 struct section *s; 4272 const char *symname; 4273 Elf_Data *d; 4274 uint32_t *w; 4275 int i, j, elferr; 4276 size_t n; 4277 4278 for (i = 0; (size_t) i < re->shnum; i++) { 4279 s = &re->sl[i]; 4280 if (s->type != SHT_GROUP) 4281 continue; 4282 if (s->link >= re->shnum) 4283 continue; 4284 (void) elf_errno(); 4285 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4286 elferr = elf_errno(); 4287 if (elferr != 0) 4288 warnx("elf_getdata failed: %s", 4289 elf_errmsg(elferr)); 4290 continue; 4291 } 4292 if (d->d_size <= 0) 4293 continue; 4294 4295 w = d->d_buf; 4296 4297 /* We only support COMDAT section. */ 4298 #ifndef GRP_COMDAT 4299 #define GRP_COMDAT 0x1 4300 #endif 4301 if ((*w++ & GRP_COMDAT) == 0) 4302 return; 4303 4304 if (s->entsize == 0) 4305 s->entsize = 4; 4306 4307 symname = get_symbol_name(re, s->link, s->info); 4308 n = s->sz / s->entsize; 4309 if (n-- < 1) 4310 return; 4311 4312 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju" 4313 " sections:\n", i, s->name, symname, (uintmax_t)n); 4314 printf(" %-10.10s %s\n", "[Index]", "Name"); 4315 for (j = 0; (size_t) j < n; j++, w++) { 4316 if (*w >= re->shnum) { 4317 warnx("invalid section index: %u", *w); 4318 continue; 4319 } 4320 printf(" [%5u] %s\n", *w, re->sl[*w].name); 4321 } 4322 } 4323 } 4324 4325 static uint8_t * 4326 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe) 4327 { 4328 uint64_t val; 4329 4330 /* 4331 * According to ARM EABI: For tags > 32, even numbered tags have 4332 * a ULEB128 param and odd numbered ones have NUL-terminated 4333 * string param. This rule probably also applies for tags <= 32 4334 * if the object arch is not ARM. 4335 */ 4336 4337 printf(" Tag_unknown_%ju: ", (uintmax_t) tag); 4338 4339 if (tag & 1) { 4340 printf("%s\n", (char *) p); 4341 p += strlen((char *) p) + 1; 4342 } else { 4343 val = _decode_uleb128(&p, pe); 4344 printf("%ju\n", (uintmax_t) val); 4345 } 4346 4347 return (p); 4348 } 4349 4350 static uint8_t * 4351 dump_compatibility_tag(uint8_t *p, uint8_t *pe) 4352 { 4353 uint64_t val; 4354 4355 val = _decode_uleb128(&p, pe); 4356 printf("flag = %ju, vendor = %s\n", (uintmax_t) val, p); 4357 p += strlen((char *) p) + 1; 4358 4359 return (p); 4360 } 4361 4362 static void 4363 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4364 { 4365 uint64_t tag, val; 4366 size_t i; 4367 int found, desc; 4368 4369 (void) re; 4370 4371 while (p < pe) { 4372 tag = _decode_uleb128(&p, pe); 4373 found = desc = 0; 4374 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]); 4375 i++) { 4376 if (tag == aeabi_tags[i].tag) { 4377 found = 1; 4378 printf(" %s: ", aeabi_tags[i].s_tag); 4379 if (aeabi_tags[i].get_desc) { 4380 desc = 1; 4381 val = _decode_uleb128(&p, pe); 4382 printf("%s\n", 4383 aeabi_tags[i].get_desc(val)); 4384 } 4385 break; 4386 } 4387 if (tag < aeabi_tags[i].tag) 4388 break; 4389 } 4390 if (!found) { 4391 p = dump_unknown_tag(tag, p, pe); 4392 continue; 4393 } 4394 if (desc) 4395 continue; 4396 4397 switch (tag) { 4398 case 4: /* Tag_CPU_raw_name */ 4399 case 5: /* Tag_CPU_name */ 4400 case 67: /* Tag_conformance */ 4401 printf("%s\n", (char *) p); 4402 p += strlen((char *) p) + 1; 4403 break; 4404 case 32: /* Tag_compatibility */ 4405 p = dump_compatibility_tag(p, pe); 4406 break; 4407 case 64: /* Tag_nodefaults */ 4408 /* ignored, written as 0. */ 4409 (void) _decode_uleb128(&p, pe); 4410 printf("True\n"); 4411 break; 4412 case 65: /* Tag_also_compatible_with */ 4413 val = _decode_uleb128(&p, pe); 4414 /* Must be Tag_CPU_arch */ 4415 if (val != 6) { 4416 printf("unknown\n"); 4417 break; 4418 } 4419 val = _decode_uleb128(&p, pe); 4420 printf("%s\n", aeabi_cpu_arch(val)); 4421 /* Skip NUL terminator. */ 4422 p++; 4423 break; 4424 default: 4425 putchar('\n'); 4426 break; 4427 } 4428 } 4429 } 4430 4431 #ifndef Tag_GNU_MIPS_ABI_FP 4432 #define Tag_GNU_MIPS_ABI_FP 4 4433 #endif 4434 4435 static void 4436 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe) 4437 { 4438 uint64_t tag, val; 4439 4440 (void) re; 4441 4442 while (p < pe) { 4443 tag = _decode_uleb128(&p, pe); 4444 switch (tag) { 4445 case Tag_GNU_MIPS_ABI_FP: 4446 val = _decode_uleb128(&p, pe); 4447 printf(" Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val)); 4448 break; 4449 case 32: /* Tag_compatibility */ 4450 p = dump_compatibility_tag(p, pe); 4451 break; 4452 default: 4453 p = dump_unknown_tag(tag, p, pe); 4454 break; 4455 } 4456 } 4457 } 4458 4459 #ifndef Tag_GNU_Power_ABI_FP 4460 #define Tag_GNU_Power_ABI_FP 4 4461 #endif 4462 4463 #ifndef Tag_GNU_Power_ABI_Vector 4464 #define Tag_GNU_Power_ABI_Vector 8 4465 #endif 4466 4467 static void 4468 dump_ppc_attributes(uint8_t *p, uint8_t *pe) 4469 { 4470 uint64_t tag, val; 4471 4472 while (p < pe) { 4473 tag = _decode_uleb128(&p, pe); 4474 switch (tag) { 4475 case Tag_GNU_Power_ABI_FP: 4476 val = _decode_uleb128(&p, pe); 4477 printf(" Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val)); 4478 break; 4479 case Tag_GNU_Power_ABI_Vector: 4480 val = _decode_uleb128(&p, pe); 4481 printf(" Tag_GNU_Power_ABI_Vector: %s\n", 4482 ppc_abi_vector(val)); 4483 break; 4484 case 32: /* Tag_compatibility */ 4485 p = dump_compatibility_tag(p, pe); 4486 break; 4487 default: 4488 p = dump_unknown_tag(tag, p, pe); 4489 break; 4490 } 4491 } 4492 } 4493 4494 static void 4495 dump_attributes(struct readelf *re) 4496 { 4497 struct section *s; 4498 Elf_Data *d; 4499 uint8_t *p, *pe, *sp; 4500 size_t len, seclen, nlen, sublen; 4501 uint64_t val; 4502 int tag, i, elferr; 4503 4504 for (i = 0; (size_t) i < re->shnum; i++) { 4505 s = &re->sl[i]; 4506 if (s->type != SHT_GNU_ATTRIBUTES && 4507 (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3)) 4508 continue; 4509 (void) elf_errno(); 4510 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4511 elferr = elf_errno(); 4512 if (elferr != 0) 4513 warnx("elf_rawdata failed: %s", 4514 elf_errmsg(elferr)); 4515 continue; 4516 } 4517 if (d->d_size <= 0) 4518 continue; 4519 p = d->d_buf; 4520 pe = p + d->d_size; 4521 if (*p != 'A') { 4522 printf("Unknown Attribute Section Format: %c\n", 4523 (char) *p); 4524 continue; 4525 } 4526 len = d->d_size - 1; 4527 p++; 4528 while (len > 0) { 4529 if (len < 4) { 4530 warnx("truncated attribute section length"); 4531 return; 4532 } 4533 seclen = re->dw_decode(&p, 4); 4534 if (seclen > len) { 4535 warnx("invalid attribute section length"); 4536 return; 4537 } 4538 len -= seclen; 4539 nlen = strlen((char *) p) + 1; 4540 if (nlen + 4 > seclen) { 4541 warnx("invalid attribute section name"); 4542 return; 4543 } 4544 printf("Attribute Section: %s\n", (char *) p); 4545 p += nlen; 4546 seclen -= nlen + 4; 4547 while (seclen > 0) { 4548 sp = p; 4549 tag = *p++; 4550 sublen = re->dw_decode(&p, 4); 4551 if (sublen > seclen) { 4552 warnx("invalid attribute sub-section" 4553 " length"); 4554 return; 4555 } 4556 seclen -= sublen; 4557 printf("%s", top_tag(tag)); 4558 if (tag == 2 || tag == 3) { 4559 putchar(':'); 4560 for (;;) { 4561 val = _decode_uleb128(&p, pe); 4562 if (val == 0) 4563 break; 4564 printf(" %ju", (uintmax_t) val); 4565 } 4566 } 4567 putchar('\n'); 4568 if (re->ehdr.e_machine == EM_ARM && 4569 s->type == SHT_LOPROC + 3) 4570 dump_arm_attributes(re, p, sp + sublen); 4571 else if (re->ehdr.e_machine == EM_MIPS || 4572 re->ehdr.e_machine == EM_MIPS_RS3_LE) 4573 dump_mips_attributes(re, p, 4574 sp + sublen); 4575 else if (re->ehdr.e_machine == EM_PPC) 4576 dump_ppc_attributes(p, sp + sublen); 4577 p = sp + sublen; 4578 } 4579 } 4580 } 4581 } 4582 4583 static void 4584 dump_mips_specific_info(struct readelf *re) 4585 { 4586 struct section *s; 4587 int i; 4588 4589 s = NULL; 4590 for (i = 0; (size_t) i < re->shnum; i++) { 4591 s = &re->sl[i]; 4592 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") || 4593 (s->type == SHT_MIPS_OPTIONS))) { 4594 dump_mips_options(re, s); 4595 } 4596 } 4597 4598 if (s->name != NULL && (!strcmp(s->name, ".MIPS.abiflags") || 4599 (s->type == SHT_MIPS_ABIFLAGS))) 4600 dump_mips_abiflags(re, s); 4601 4602 /* 4603 * Dump .reginfo if present (although it will be ignored by an OS if a 4604 * .MIPS.options section is present, according to SGI mips64 spec). 4605 */ 4606 for (i = 0; (size_t) i < re->shnum; i++) { 4607 s = &re->sl[i]; 4608 if (s->name != NULL && (!strcmp(s->name, ".reginfo") || 4609 (s->type == SHT_MIPS_REGINFO))) 4610 dump_mips_reginfo(re, s); 4611 } 4612 } 4613 4614 static void 4615 dump_mips_abiflags(struct readelf *re, struct section *s) 4616 { 4617 Elf_Data *d; 4618 uint8_t *p; 4619 int elferr; 4620 uint32_t isa_ext, ases, flags1, flags2; 4621 uint16_t version; 4622 uint8_t isa_level, isa_rev, gpr_size, cpr1_size, cpr2_size, fp_abi; 4623 4624 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4625 elferr = elf_errno(); 4626 if (elferr != 0) 4627 warnx("elf_rawdata failed: %s", 4628 elf_errmsg(elferr)); 4629 return; 4630 } 4631 if (d->d_size != 24) { 4632 warnx("invalid MIPS abiflags section size"); 4633 return; 4634 } 4635 4636 p = d->d_buf; 4637 version = re->dw_decode(&p, 2); 4638 printf("MIPS ABI Flags Version: %u", version); 4639 if (version != 0) { 4640 printf(" (unknown)\n\n"); 4641 return; 4642 } 4643 printf("\n\n"); 4644 4645 isa_level = re->dw_decode(&p, 1); 4646 isa_rev = re->dw_decode(&p, 1); 4647 gpr_size = re->dw_decode(&p, 1); 4648 cpr1_size = re->dw_decode(&p, 1); 4649 cpr2_size = re->dw_decode(&p, 1); 4650 fp_abi = re->dw_decode(&p, 1); 4651 isa_ext = re->dw_decode(&p, 4); 4652 ases = re->dw_decode(&p, 4); 4653 flags1 = re->dw_decode(&p, 4); 4654 flags2 = re->dw_decode(&p, 4); 4655 4656 printf("ISA: "); 4657 if (isa_rev <= 1) 4658 printf("MIPS%u\n", isa_level); 4659 else 4660 printf("MIPS%ur%u\n", isa_level, isa_rev); 4661 printf("GPR size: %d\n", get_mips_register_size(gpr_size)); 4662 printf("CPR1 size: %d\n", get_mips_register_size(cpr1_size)); 4663 printf("CPR2 size: %d\n", get_mips_register_size(cpr2_size)); 4664 printf("FP ABI: "); 4665 switch (fp_abi) { 4666 case 3: 4667 printf("Soft float"); 4668 break; 4669 default: 4670 printf("%u", fp_abi); 4671 break; 4672 } 4673 printf("\nISA Extension: %u\n", isa_ext); 4674 printf("ASEs: %u\n", ases); 4675 printf("FLAGS 1: %08x\n", flags1); 4676 printf("FLAGS 2: %08x\n", flags2); 4677 } 4678 4679 static int 4680 get_mips_register_size(uint8_t flag) 4681 { 4682 switch (flag) { 4683 case 0: return 0; 4684 case 1: return 32; 4685 case 2: return 64; 4686 case 3: return 128; 4687 default: return -1; 4688 } 4689 } 4690 static void 4691 dump_mips_reginfo(struct readelf *re, struct section *s) 4692 { 4693 Elf_Data *d; 4694 int elferr, len; 4695 4696 (void) elf_errno(); 4697 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4698 elferr = elf_errno(); 4699 if (elferr != 0) 4700 warnx("elf_rawdata failed: %s", 4701 elf_errmsg(elferr)); 4702 return; 4703 } 4704 if (d->d_size <= 0) 4705 return; 4706 if (!get_ent_count(s, &len)) 4707 return; 4708 4709 printf("\nSection '%s' contains %d entries:\n", s->name, len); 4710 dump_mips_odk_reginfo(re, d->d_buf, d->d_size); 4711 } 4712 4713 static void 4714 dump_mips_options(struct readelf *re, struct section *s) 4715 { 4716 Elf_Data *d; 4717 uint32_t info; 4718 uint16_t sndx; 4719 uint8_t *p, *pe; 4720 uint8_t kind, size; 4721 int elferr; 4722 4723 (void) elf_errno(); 4724 if ((d = elf_rawdata(s->scn, NULL)) == NULL) { 4725 elferr = elf_errno(); 4726 if (elferr != 0) 4727 warnx("elf_rawdata failed: %s", 4728 elf_errmsg(elferr)); 4729 return; 4730 } 4731 if (d->d_size == 0) 4732 return; 4733 4734 printf("\nSection %s contains:\n", s->name); 4735 p = d->d_buf; 4736 pe = p + d->d_size; 4737 while (p < pe) { 4738 if (pe - p < 8) { 4739 warnx("Truncated MIPS option header"); 4740 return; 4741 } 4742 kind = re->dw_decode(&p, 1); 4743 size = re->dw_decode(&p, 1); 4744 sndx = re->dw_decode(&p, 2); 4745 info = re->dw_decode(&p, 4); 4746 if (size < 8 || size - 8 > pe - p) { 4747 warnx("Malformed MIPS option header"); 4748 return; 4749 } 4750 size -= 8; 4751 switch (kind) { 4752 case ODK_REGINFO: 4753 dump_mips_odk_reginfo(re, p, size); 4754 break; 4755 case ODK_EXCEPTIONS: 4756 printf(" EXCEPTIONS FPU_MIN: %#x\n", 4757 info & OEX_FPU_MIN); 4758 printf("%11.11s FPU_MAX: %#x\n", "", 4759 info & OEX_FPU_MAX); 4760 dump_mips_option_flags("", mips_exceptions_option, 4761 info); 4762 break; 4763 case ODK_PAD: 4764 printf(" %-10.10s section: %ju\n", "OPAD", 4765 (uintmax_t) sndx); 4766 dump_mips_option_flags("", mips_pad_option, info); 4767 break; 4768 case ODK_HWPATCH: 4769 dump_mips_option_flags("HWPATCH", mips_hwpatch_option, 4770 info); 4771 break; 4772 case ODK_HWAND: 4773 dump_mips_option_flags("HWAND", mips_hwa_option, info); 4774 break; 4775 case ODK_HWOR: 4776 dump_mips_option_flags("HWOR", mips_hwo_option, info); 4777 break; 4778 case ODK_FILL: 4779 printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info); 4780 break; 4781 case ODK_TAGS: 4782 printf(" %-10.10s\n", "TAGS"); 4783 break; 4784 case ODK_GP_GROUP: 4785 printf(" %-10.10s GP group number: %#x\n", "GP_GROUP", 4786 info & 0xFFFF); 4787 if (info & 0x10000) 4788 printf(" %-10.10s GP group is " 4789 "self-contained\n", ""); 4790 break; 4791 case ODK_IDENT: 4792 printf(" %-10.10s default GP group number: %#x\n", 4793 "IDENT", info & 0xFFFF); 4794 if (info & 0x10000) 4795 printf(" %-10.10s default GP group is " 4796 "self-contained\n", ""); 4797 break; 4798 case ODK_PAGESIZE: 4799 printf(" %-10.10s\n", "PAGESIZE"); 4800 break; 4801 default: 4802 break; 4803 } 4804 p += size; 4805 } 4806 } 4807 4808 static void 4809 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info) 4810 { 4811 int first; 4812 4813 first = 1; 4814 for (; opt->desc != NULL; opt++) { 4815 if (info & opt->flag) { 4816 printf(" %-10.10s %s\n", first ? name : "", 4817 opt->desc); 4818 first = 0; 4819 } 4820 } 4821 } 4822 4823 static void 4824 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz) 4825 { 4826 uint32_t ri_gprmask; 4827 uint32_t ri_cprmask[4]; 4828 uint64_t ri_gp_value; 4829 uint8_t *pe; 4830 int i; 4831 4832 pe = p + sz; 4833 while (p < pe) { 4834 ri_gprmask = re->dw_decode(&p, 4); 4835 /* Skip ri_pad padding field for mips64. */ 4836 if (re->ec == ELFCLASS64) 4837 re->dw_decode(&p, 4); 4838 for (i = 0; i < 4; i++) 4839 ri_cprmask[i] = re->dw_decode(&p, 4); 4840 if (re->ec == ELFCLASS32) 4841 ri_gp_value = re->dw_decode(&p, 4); 4842 else 4843 ri_gp_value = re->dw_decode(&p, 8); 4844 printf(" %s ", option_kind(ODK_REGINFO)); 4845 printf("ri_gprmask: 0x%08jx\n", (uintmax_t) ri_gprmask); 4846 for (i = 0; i < 4; i++) 4847 printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i, 4848 (uintmax_t) ri_cprmask[i]); 4849 printf("%12.12s", ""); 4850 printf("ri_gp_value: %#jx\n", (uintmax_t) ri_gp_value); 4851 } 4852 } 4853 4854 static void 4855 dump_arch_specific_info(struct readelf *re) 4856 { 4857 4858 dump_liblist(re); 4859 dump_attributes(re); 4860 4861 switch (re->ehdr.e_machine) { 4862 case EM_MIPS: 4863 case EM_MIPS_RS3_LE: 4864 dump_mips_specific_info(re); 4865 default: 4866 break; 4867 } 4868 } 4869 4870 static const char * 4871 dwarf_regname(struct readelf *re, unsigned int num) 4872 { 4873 static char rx[32]; 4874 const char *rn; 4875 4876 if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL) 4877 return (rn); 4878 4879 snprintf(rx, sizeof(rx), "r%u", num); 4880 4881 return (rx); 4882 } 4883 4884 static void 4885 dump_dwarf_line(struct readelf *re) 4886 { 4887 struct section *s; 4888 Dwarf_Die die; 4889 Dwarf_Error de; 4890 Dwarf_Half tag, version, pointer_size; 4891 Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize; 4892 Dwarf_Small minlen, defstmt, lrange, opbase, oplen; 4893 Elf_Data *d; 4894 char *pn; 4895 uint64_t address, file, line, column, isa, opsize, udelta; 4896 int64_t sdelta; 4897 uint8_t *p, *pe; 4898 int8_t lbase; 4899 int i, is_stmt, dwarf_size, elferr, ret; 4900 4901 printf("\nDump of debug contents of section .debug_line:\n"); 4902 4903 s = NULL; 4904 for (i = 0; (size_t) i < re->shnum; i++) { 4905 s = &re->sl[i]; 4906 if (s->name != NULL && !strcmp(s->name, ".debug_line")) 4907 break; 4908 } 4909 if ((size_t) i >= re->shnum) 4910 return; 4911 4912 (void) elf_errno(); 4913 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 4914 elferr = elf_errno(); 4915 if (elferr != 0) 4916 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 4917 return; 4918 } 4919 if (d->d_size <= 0) 4920 return; 4921 4922 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 4923 NULL, &de)) == DW_DLV_OK) { 4924 die = NULL; 4925 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) { 4926 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 4927 warnx("dwarf_tag failed: %s", 4928 dwarf_errmsg(de)); 4929 return; 4930 } 4931 /* XXX: What about DW_TAG_partial_unit? */ 4932 if (tag == DW_TAG_compile_unit) 4933 break; 4934 } 4935 if (die == NULL) { 4936 warnx("could not find DW_TAG_compile_unit die"); 4937 return; 4938 } 4939 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset, 4940 &de) != DW_DLV_OK) 4941 continue; 4942 4943 length = re->dw_read(d, &offset, 4); 4944 if (length == 0xffffffff) { 4945 dwarf_size = 8; 4946 length = re->dw_read(d, &offset, 8); 4947 } else 4948 dwarf_size = 4; 4949 4950 if (length > d->d_size - offset) { 4951 warnx("invalid .dwarf_line section"); 4952 continue; 4953 } 4954 4955 endoff = offset + length; 4956 pe = (uint8_t *) d->d_buf + endoff; 4957 version = re->dw_read(d, &offset, 2); 4958 hdrlen = re->dw_read(d, &offset, dwarf_size); 4959 minlen = re->dw_read(d, &offset, 1); 4960 defstmt = re->dw_read(d, &offset, 1); 4961 lbase = re->dw_read(d, &offset, 1); 4962 lrange = re->dw_read(d, &offset, 1); 4963 opbase = re->dw_read(d, &offset, 1); 4964 4965 printf("\n"); 4966 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 4967 printf(" DWARF version:\t\t%u\n", version); 4968 printf(" Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen); 4969 printf(" Minimum Instruction Length:\t%u\n", minlen); 4970 printf(" Initial value of 'is_stmt':\t%u\n", defstmt); 4971 printf(" Line Base:\t\t\t%d\n", lbase); 4972 printf(" Line Range:\t\t\t%u\n", lrange); 4973 printf(" Opcode Base:\t\t\t%u\n", opbase); 4974 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de); 4975 printf(" (Pointer size:\t\t%u)\n", pointer_size); 4976 4977 printf("\n"); 4978 printf(" Opcodes:\n"); 4979 for (i = 1; i < opbase; i++) { 4980 oplen = re->dw_read(d, &offset, 1); 4981 printf(" Opcode %d has %u args\n", i, oplen); 4982 } 4983 4984 printf("\n"); 4985 printf(" The Directory Table:\n"); 4986 p = (uint8_t *) d->d_buf + offset; 4987 while (*p != '\0') { 4988 printf(" %s\n", (char *) p); 4989 p += strlen((char *) p) + 1; 4990 } 4991 4992 p++; 4993 printf("\n"); 4994 printf(" The File Name Table:\n"); 4995 printf(" Entry\tDir\tTime\tSize\tName\n"); 4996 i = 0; 4997 while (*p != '\0') { 4998 i++; 4999 pn = (char *) p; 5000 p += strlen(pn) + 1; 5001 dirndx = _decode_uleb128(&p, pe); 5002 mtime = _decode_uleb128(&p, pe); 5003 fsize = _decode_uleb128(&p, pe); 5004 printf(" %d\t%ju\t%ju\t%ju\t%s\n", i, 5005 (uintmax_t) dirndx, (uintmax_t) mtime, 5006 (uintmax_t) fsize, pn); 5007 } 5008 5009 #define RESET_REGISTERS \ 5010 do { \ 5011 address = 0; \ 5012 file = 1; \ 5013 line = 1; \ 5014 column = 0; \ 5015 is_stmt = defstmt; \ 5016 } while(0) 5017 5018 #define LINE(x) (lbase + (((x) - opbase) % lrange)) 5019 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen) 5020 5021 p++; 5022 printf("\n"); 5023 printf(" Line Number Statements:\n"); 5024 5025 RESET_REGISTERS; 5026 5027 while (p < pe) { 5028 5029 if (*p == 0) { 5030 /* 5031 * Extended Opcodes. 5032 */ 5033 p++; 5034 opsize = _decode_uleb128(&p, pe); 5035 printf(" Extended opcode %u: ", *p); 5036 switch (*p) { 5037 case DW_LNE_end_sequence: 5038 p++; 5039 RESET_REGISTERS; 5040 printf("End of Sequence\n"); 5041 break; 5042 case DW_LNE_set_address: 5043 p++; 5044 address = re->dw_decode(&p, 5045 pointer_size); 5046 printf("set Address to %#jx\n", 5047 (uintmax_t) address); 5048 break; 5049 case DW_LNE_define_file: 5050 p++; 5051 pn = (char *) p; 5052 p += strlen(pn) + 1; 5053 dirndx = _decode_uleb128(&p, pe); 5054 mtime = _decode_uleb128(&p, pe); 5055 fsize = _decode_uleb128(&p, pe); 5056 printf("define new file: %s\n", pn); 5057 break; 5058 default: 5059 /* Unrecognized extened opcodes. */ 5060 p += opsize; 5061 printf("unknown opcode\n"); 5062 } 5063 } else if (*p > 0 && *p < opbase) { 5064 /* 5065 * Standard Opcodes. 5066 */ 5067 switch(*p++) { 5068 case DW_LNS_copy: 5069 printf(" Copy\n"); 5070 break; 5071 case DW_LNS_advance_pc: 5072 udelta = _decode_uleb128(&p, pe) * 5073 minlen; 5074 address += udelta; 5075 printf(" Advance PC by %ju to %#jx\n", 5076 (uintmax_t) udelta, 5077 (uintmax_t) address); 5078 break; 5079 case DW_LNS_advance_line: 5080 sdelta = _decode_sleb128(&p, pe); 5081 line += sdelta; 5082 printf(" Advance Line by %jd to %ju\n", 5083 (intmax_t) sdelta, 5084 (uintmax_t) line); 5085 break; 5086 case DW_LNS_set_file: 5087 file = _decode_uleb128(&p, pe); 5088 printf(" Set File to %ju\n", 5089 (uintmax_t) file); 5090 break; 5091 case DW_LNS_set_column: 5092 column = _decode_uleb128(&p, pe); 5093 printf(" Set Column to %ju\n", 5094 (uintmax_t) column); 5095 break; 5096 case DW_LNS_negate_stmt: 5097 is_stmt = !is_stmt; 5098 printf(" Set is_stmt to %d\n", is_stmt); 5099 break; 5100 case DW_LNS_set_basic_block: 5101 printf(" Set basic block flag\n"); 5102 break; 5103 case DW_LNS_const_add_pc: 5104 address += ADDRESS(255); 5105 printf(" Advance PC by constant %ju" 5106 " to %#jx\n", 5107 (uintmax_t) ADDRESS(255), 5108 (uintmax_t) address); 5109 break; 5110 case DW_LNS_fixed_advance_pc: 5111 udelta = re->dw_decode(&p, 2); 5112 address += udelta; 5113 printf(" Advance PC by fixed value " 5114 "%ju to %#jx\n", 5115 (uintmax_t) udelta, 5116 (uintmax_t) address); 5117 break; 5118 case DW_LNS_set_prologue_end: 5119 printf(" Set prologue end flag\n"); 5120 break; 5121 case DW_LNS_set_epilogue_begin: 5122 printf(" Set epilogue begin flag\n"); 5123 break; 5124 case DW_LNS_set_isa: 5125 isa = _decode_uleb128(&p, pe); 5126 printf(" Set isa to %ju\n", 5127 (uintmax_t) isa); 5128 break; 5129 default: 5130 /* Unrecognized extended opcodes. */ 5131 printf(" Unknown extended opcode %u\n", 5132 *(p - 1)); 5133 break; 5134 } 5135 5136 } else { 5137 /* 5138 * Special Opcodes. 5139 */ 5140 line += LINE(*p); 5141 address += ADDRESS(*p); 5142 printf(" Special opcode %u: advance Address " 5143 "by %ju to %#jx and Line by %jd to %ju\n", 5144 *p - opbase, (uintmax_t) ADDRESS(*p), 5145 (uintmax_t) address, (intmax_t) LINE(*p), 5146 (uintmax_t) line); 5147 p++; 5148 } 5149 5150 5151 } 5152 } 5153 if (ret == DW_DLV_ERROR) 5154 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5155 5156 #undef RESET_REGISTERS 5157 #undef LINE 5158 #undef ADDRESS 5159 } 5160 5161 static void 5162 dump_dwarf_line_decoded(struct readelf *re) 5163 { 5164 Dwarf_Die die; 5165 Dwarf_Line *linebuf, ln; 5166 Dwarf_Addr lineaddr; 5167 Dwarf_Signed linecount, srccount; 5168 Dwarf_Unsigned lineno, fn; 5169 Dwarf_Error de; 5170 const char *dir, *file; 5171 char **srcfiles; 5172 int i, ret; 5173 5174 printf("Decoded dump of debug contents of section .debug_line:\n\n"); 5175 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5176 NULL, &de)) == DW_DLV_OK) { 5177 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK) 5178 continue; 5179 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) != 5180 DW_DLV_OK) 5181 file = NULL; 5182 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) != 5183 DW_DLV_OK) 5184 dir = NULL; 5185 printf("CU: "); 5186 if (dir && file && file[0] != '/') 5187 printf("%s/", dir); 5188 if (file) 5189 printf("%s", file); 5190 putchar('\n'); 5191 printf("%-37s %11s %s\n", "Filename", "Line Number", 5192 "Starting Address"); 5193 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK) 5194 continue; 5195 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK) 5196 continue; 5197 for (i = 0; i < linecount; i++) { 5198 ln = linebuf[i]; 5199 if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK) 5200 continue; 5201 if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK) 5202 continue; 5203 if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK) 5204 continue; 5205 printf("%-37s %11ju %#18jx\n", 5206 basename(srcfiles[fn - 1]), (uintmax_t) lineno, 5207 (uintmax_t) lineaddr); 5208 } 5209 putchar('\n'); 5210 } 5211 } 5212 5213 static void 5214 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level) 5215 { 5216 Dwarf_Attribute *attr_list; 5217 Dwarf_Die ret_die; 5218 Dwarf_Off dieoff, cuoff, culen, attroff; 5219 Dwarf_Unsigned ate, lang, v_udata, v_sig; 5220 Dwarf_Signed attr_count, v_sdata; 5221 Dwarf_Off v_off; 5222 Dwarf_Addr v_addr; 5223 Dwarf_Half tag, attr, form; 5224 Dwarf_Block *v_block; 5225 Dwarf_Bool v_bool, is_info; 5226 Dwarf_Sig8 v_sig8; 5227 Dwarf_Error de; 5228 Dwarf_Ptr v_expr; 5229 const char *tag_str, *attr_str, *ate_str, *lang_str; 5230 char unk_tag[32], unk_attr[32]; 5231 char *v_str; 5232 uint8_t *b, *p; 5233 int i, j, abc, ret; 5234 5235 if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) { 5236 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de)); 5237 goto cont_search; 5238 } 5239 5240 printf(" <%d><%jx>: ", level, (uintmax_t) dieoff); 5241 5242 if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) { 5243 warnx("dwarf_die_CU_offset_range failed: %s", 5244 dwarf_errmsg(de)); 5245 cuoff = 0; 5246 } 5247 5248 abc = dwarf_die_abbrev_code(die); 5249 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5250 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5251 goto cont_search; 5252 } 5253 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 5254 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag); 5255 tag_str = unk_tag; 5256 } 5257 5258 printf("Abbrev Number: %d (%s)\n", abc, tag_str); 5259 5260 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5261 DW_DLV_OK) { 5262 if (ret == DW_DLV_ERROR) 5263 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5264 goto cont_search; 5265 } 5266 5267 for (i = 0; i < attr_count; i++) { 5268 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 5269 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 5270 continue; 5271 } 5272 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5273 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5274 continue; 5275 } 5276 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) { 5277 snprintf(unk_attr, sizeof(unk_attr), 5278 "[Unknown AT: %#x]", attr); 5279 attr_str = unk_attr; 5280 } 5281 if (dwarf_attroffset(attr_list[i], &attroff, &de) != 5282 DW_DLV_OK) { 5283 warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de)); 5284 attroff = 0; 5285 } 5286 printf(" <%jx> %-18s: ", (uintmax_t) attroff, attr_str); 5287 switch (form) { 5288 case DW_FORM_ref_addr: 5289 case DW_FORM_sec_offset: 5290 if (dwarf_global_formref(attr_list[i], &v_off, &de) != 5291 DW_DLV_OK) { 5292 warnx("dwarf_global_formref failed: %s", 5293 dwarf_errmsg(de)); 5294 continue; 5295 } 5296 if (form == DW_FORM_ref_addr) 5297 printf("<0x%jx>", (uintmax_t) v_off); 5298 else 5299 printf("0x%jx", (uintmax_t) v_off); 5300 break; 5301 5302 case DW_FORM_ref1: 5303 case DW_FORM_ref2: 5304 case DW_FORM_ref4: 5305 case DW_FORM_ref8: 5306 case DW_FORM_ref_udata: 5307 if (dwarf_formref(attr_list[i], &v_off, &de) != 5308 DW_DLV_OK) { 5309 warnx("dwarf_formref failed: %s", 5310 dwarf_errmsg(de)); 5311 continue; 5312 } 5313 v_off += cuoff; 5314 printf("<0x%jx>", (uintmax_t) v_off); 5315 break; 5316 5317 case DW_FORM_addr: 5318 if (dwarf_formaddr(attr_list[i], &v_addr, &de) != 5319 DW_DLV_OK) { 5320 warnx("dwarf_formaddr failed: %s", 5321 dwarf_errmsg(de)); 5322 continue; 5323 } 5324 printf("%#jx", (uintmax_t) v_addr); 5325 break; 5326 5327 case DW_FORM_data1: 5328 case DW_FORM_data2: 5329 case DW_FORM_data4: 5330 case DW_FORM_data8: 5331 case DW_FORM_udata: 5332 if (dwarf_formudata(attr_list[i], &v_udata, &de) != 5333 DW_DLV_OK) { 5334 warnx("dwarf_formudata failed: %s", 5335 dwarf_errmsg(de)); 5336 continue; 5337 } 5338 if (attr == DW_AT_high_pc) 5339 printf("0x%jx", (uintmax_t) v_udata); 5340 else 5341 printf("%ju", (uintmax_t) v_udata); 5342 break; 5343 5344 case DW_FORM_sdata: 5345 if (dwarf_formsdata(attr_list[i], &v_sdata, &de) != 5346 DW_DLV_OK) { 5347 warnx("dwarf_formudata failed: %s", 5348 dwarf_errmsg(de)); 5349 continue; 5350 } 5351 printf("%jd", (intmax_t) v_sdata); 5352 break; 5353 5354 case DW_FORM_flag: 5355 if (dwarf_formflag(attr_list[i], &v_bool, &de) != 5356 DW_DLV_OK) { 5357 warnx("dwarf_formflag failed: %s", 5358 dwarf_errmsg(de)); 5359 continue; 5360 } 5361 printf("%jd", (intmax_t) v_bool); 5362 break; 5363 5364 case DW_FORM_flag_present: 5365 putchar('1'); 5366 break; 5367 5368 case DW_FORM_string: 5369 case DW_FORM_strp: 5370 if (dwarf_formstring(attr_list[i], &v_str, &de) != 5371 DW_DLV_OK) { 5372 warnx("dwarf_formstring failed: %s", 5373 dwarf_errmsg(de)); 5374 continue; 5375 } 5376 if (form == DW_FORM_string) 5377 printf("%s", v_str); 5378 else 5379 printf("(indirect string) %s", v_str); 5380 break; 5381 5382 case DW_FORM_block: 5383 case DW_FORM_block1: 5384 case DW_FORM_block2: 5385 case DW_FORM_block4: 5386 if (dwarf_formblock(attr_list[i], &v_block, &de) != 5387 DW_DLV_OK) { 5388 warnx("dwarf_formblock failed: %s", 5389 dwarf_errmsg(de)); 5390 continue; 5391 } 5392 printf("%ju byte block:", (uintmax_t) v_block->bl_len); 5393 b = v_block->bl_data; 5394 for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++) 5395 printf(" %x", b[j]); 5396 printf("\t("); 5397 dump_dwarf_block(re, v_block->bl_data, v_block->bl_len); 5398 putchar(')'); 5399 break; 5400 5401 case DW_FORM_exprloc: 5402 if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr, 5403 &de) != DW_DLV_OK) { 5404 warnx("dwarf_formexprloc failed: %s", 5405 dwarf_errmsg(de)); 5406 continue; 5407 } 5408 printf("%ju byte block:", (uintmax_t) v_udata); 5409 b = v_expr; 5410 for (j = 0; (Dwarf_Unsigned) j < v_udata; j++) 5411 printf(" %x", b[j]); 5412 printf("\t("); 5413 dump_dwarf_block(re, v_expr, v_udata); 5414 putchar(')'); 5415 break; 5416 5417 case DW_FORM_ref_sig8: 5418 if (dwarf_formsig8(attr_list[i], &v_sig8, &de) != 5419 DW_DLV_OK) { 5420 warnx("dwarf_formsig8 failed: %s", 5421 dwarf_errmsg(de)); 5422 continue; 5423 } 5424 p = (uint8_t *)(uintptr_t) &v_sig8.signature[0]; 5425 v_sig = re->dw_decode(&p, 8); 5426 printf("signature: 0x%jx", (uintmax_t) v_sig); 5427 } 5428 switch (attr) { 5429 case DW_AT_encoding: 5430 if (dwarf_attrval_unsigned(die, attr, &ate, &de) != 5431 DW_DLV_OK) 5432 break; 5433 if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK) 5434 ate_str = "DW_ATE_UNKNOWN"; 5435 printf("\t(%s)", &ate_str[strlen("DW_ATE_")]); 5436 break; 5437 5438 case DW_AT_language: 5439 if (dwarf_attrval_unsigned(die, attr, &lang, &de) != 5440 DW_DLV_OK) 5441 break; 5442 if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK) 5443 break; 5444 printf("\t(%s)", &lang_str[strlen("DW_LANG_")]); 5445 break; 5446 5447 case DW_AT_location: 5448 case DW_AT_string_length: 5449 case DW_AT_return_addr: 5450 case DW_AT_data_member_location: 5451 case DW_AT_frame_base: 5452 case DW_AT_segment: 5453 case DW_AT_static_link: 5454 case DW_AT_use_location: 5455 case DW_AT_vtable_elem_location: 5456 switch (form) { 5457 case DW_FORM_data4: 5458 case DW_FORM_data8: 5459 case DW_FORM_sec_offset: 5460 printf("\t(location list)"); 5461 break; 5462 default: 5463 break; 5464 } 5465 5466 default: 5467 break; 5468 } 5469 putchar('\n'); 5470 } 5471 5472 5473 cont_search: 5474 /* Search children. */ 5475 ret = dwarf_child(die, &ret_die, &de); 5476 if (ret == DW_DLV_ERROR) 5477 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5478 else if (ret == DW_DLV_OK) 5479 dump_dwarf_die(re, ret_die, level + 1); 5480 5481 /* Search sibling. */ 5482 is_info = dwarf_get_die_infotypes_flag(die); 5483 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 5484 if (ret == DW_DLV_ERROR) 5485 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5486 else if (ret == DW_DLV_OK) 5487 dump_dwarf_die(re, ret_die, level); 5488 5489 dwarf_dealloc(re->dbg, die, DW_DLA_DIE); 5490 } 5491 5492 static void 5493 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize, 5494 Dwarf_Half ver) 5495 { 5496 5497 re->cu_psize = psize; 5498 re->cu_osize = osize; 5499 re->cu_ver = ver; 5500 } 5501 5502 static void 5503 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info) 5504 { 5505 struct section *s; 5506 Dwarf_Die die; 5507 Dwarf_Error de; 5508 Dwarf_Half tag, version, pointer_size, off_size; 5509 Dwarf_Off cu_offset, cu_length; 5510 Dwarf_Off aboff; 5511 Dwarf_Unsigned typeoff; 5512 Dwarf_Sig8 sig8; 5513 Dwarf_Unsigned sig; 5514 uint8_t *p; 5515 const char *sn; 5516 int i, ret; 5517 5518 sn = is_info ? ".debug_info" : ".debug_types"; 5519 5520 s = NULL; 5521 for (i = 0; (size_t) i < re->shnum; i++) { 5522 s = &re->sl[i]; 5523 if (s->name != NULL && !strcmp(s->name, sn)) 5524 break; 5525 } 5526 if ((size_t) i >= re->shnum) 5527 return; 5528 5529 do { 5530 printf("\nDump of debug contents of section %s:\n", sn); 5531 5532 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL, 5533 &version, &aboff, &pointer_size, &off_size, NULL, &sig8, 5534 &typeoff, NULL, &de)) == DW_DLV_OK) { 5535 set_cu_context(re, pointer_size, off_size, version); 5536 die = NULL; 5537 while (dwarf_siblingof_b(re->dbg, die, &die, is_info, 5538 &de) == DW_DLV_OK) { 5539 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5540 warnx("dwarf_tag failed: %s", 5541 dwarf_errmsg(de)); 5542 continue; 5543 } 5544 /* XXX: What about DW_TAG_partial_unit? */ 5545 if ((is_info && tag == DW_TAG_compile_unit) || 5546 (!is_info && tag == DW_TAG_type_unit)) 5547 break; 5548 } 5549 if (die == NULL && is_info) { 5550 warnx("could not find DW_TAG_compile_unit " 5551 "die"); 5552 continue; 5553 } else if (die == NULL && !is_info) { 5554 warnx("could not find DW_TAG_type_unit die"); 5555 continue; 5556 } 5557 5558 if (dwarf_die_CU_offset_range(die, &cu_offset, 5559 &cu_length, &de) != DW_DLV_OK) { 5560 warnx("dwarf_die_CU_offset failed: %s", 5561 dwarf_errmsg(de)); 5562 continue; 5563 } 5564 5565 cu_length -= off_size == 4 ? 4 : 12; 5566 5567 sig = 0; 5568 if (!is_info) { 5569 p = (uint8_t *)(uintptr_t) &sig8.signature[0]; 5570 sig = re->dw_decode(&p, 8); 5571 } 5572 5573 printf("\n Type Unit @ offset 0x%jx:\n", 5574 (uintmax_t) cu_offset); 5575 printf(" Length:\t\t%#jx (%d-bit)\n", 5576 (uintmax_t) cu_length, off_size == 4 ? 32 : 64); 5577 printf(" Version:\t\t%u\n", version); 5578 printf(" Abbrev Offset:\t0x%jx\n", 5579 (uintmax_t) aboff); 5580 printf(" Pointer Size:\t%u\n", pointer_size); 5581 if (!is_info) { 5582 printf(" Signature:\t\t0x%016jx\n", 5583 (uintmax_t) sig); 5584 printf(" Type Offset:\t0x%jx\n", 5585 (uintmax_t) typeoff); 5586 } 5587 5588 dump_dwarf_die(re, die, 0); 5589 } 5590 if (ret == DW_DLV_ERROR) 5591 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5592 if (is_info) 5593 break; 5594 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 5595 } 5596 5597 static void 5598 dump_dwarf_abbrev(struct readelf *re) 5599 { 5600 Dwarf_Abbrev ab; 5601 Dwarf_Off aboff, atoff; 5602 Dwarf_Unsigned length, attr_count; 5603 Dwarf_Signed flag, form; 5604 Dwarf_Half tag, attr; 5605 Dwarf_Error de; 5606 const char *tag_str, *attr_str, *form_str; 5607 char unk_tag[32], unk_attr[32], unk_form[32]; 5608 int i, j, ret; 5609 5610 printf("\nContents of section .debug_abbrev:\n\n"); 5611 5612 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff, 5613 NULL, NULL, &de)) == DW_DLV_OK) { 5614 printf(" Number TAG\n"); 5615 i = 0; 5616 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length, 5617 &attr_count, &de)) == DW_DLV_OK) { 5618 if (length == 1) { 5619 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5620 break; 5621 } 5622 aboff += length; 5623 printf("%4d", ++i); 5624 if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) { 5625 warnx("dwarf_get_abbrev_tag failed: %s", 5626 dwarf_errmsg(de)); 5627 goto next_abbrev; 5628 } 5629 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) { 5630 snprintf(unk_tag, sizeof(unk_tag), 5631 "[Unknown Tag: %#x]", tag); 5632 tag_str = unk_tag; 5633 } 5634 if (dwarf_get_abbrev_children_flag(ab, &flag, &de) != 5635 DW_DLV_OK) { 5636 warnx("dwarf_get_abbrev_children_flag failed:" 5637 " %s", dwarf_errmsg(de)); 5638 goto next_abbrev; 5639 } 5640 printf(" %s %s\n", tag_str, 5641 flag ? "[has children]" : "[no children]"); 5642 for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) { 5643 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j, 5644 &attr, &form, &atoff, &de) != DW_DLV_OK) { 5645 warnx("dwarf_get_abbrev_entry failed:" 5646 " %s", dwarf_errmsg(de)); 5647 continue; 5648 } 5649 if (dwarf_get_AT_name(attr, &attr_str) != 5650 DW_DLV_OK) { 5651 snprintf(unk_attr, sizeof(unk_attr), 5652 "[Unknown AT: %#x]", attr); 5653 attr_str = unk_attr; 5654 } 5655 if (dwarf_get_FORM_name(form, &form_str) != 5656 DW_DLV_OK) { 5657 snprintf(unk_form, sizeof(unk_form), 5658 "[Unknown Form: %#x]", 5659 (Dwarf_Half) form); 5660 form_str = unk_form; 5661 } 5662 printf(" %-18s %s\n", attr_str, form_str); 5663 } 5664 next_abbrev: 5665 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV); 5666 } 5667 if (ret != DW_DLV_OK) 5668 warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de)); 5669 } 5670 if (ret == DW_DLV_ERROR) 5671 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 5672 } 5673 5674 static void 5675 dump_dwarf_pubnames(struct readelf *re) 5676 { 5677 struct section *s; 5678 Dwarf_Off die_off; 5679 Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length; 5680 Dwarf_Signed cnt; 5681 Dwarf_Global *globs; 5682 Dwarf_Half nt_version; 5683 Dwarf_Error de; 5684 Elf_Data *d; 5685 char *glob_name; 5686 int i, dwarf_size, elferr; 5687 5688 printf("\nContents of the .debug_pubnames section:\n"); 5689 5690 s = NULL; 5691 for (i = 0; (size_t) i < re->shnum; i++) { 5692 s = &re->sl[i]; 5693 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames")) 5694 break; 5695 } 5696 if ((size_t) i >= re->shnum) 5697 return; 5698 5699 (void) elf_errno(); 5700 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5701 elferr = elf_errno(); 5702 if (elferr != 0) 5703 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5704 return; 5705 } 5706 if (d->d_size <= 0) 5707 return; 5708 5709 /* Read in .debug_pubnames section table header. */ 5710 offset = 0; 5711 length = re->dw_read(d, &offset, 4); 5712 if (length == 0xffffffff) { 5713 dwarf_size = 8; 5714 length = re->dw_read(d, &offset, 8); 5715 } else 5716 dwarf_size = 4; 5717 5718 if (length > d->d_size - offset) { 5719 warnx("invalid .dwarf_pubnames section"); 5720 return; 5721 } 5722 5723 nt_version = re->dw_read(d, &offset, 2); 5724 nt_cu_offset = re->dw_read(d, &offset, dwarf_size); 5725 nt_cu_length = re->dw_read(d, &offset, dwarf_size); 5726 printf(" Length:\t\t\t\t%ju\n", (uintmax_t) length); 5727 printf(" Version:\t\t\t\t%u\n", nt_version); 5728 printf(" Offset into .debug_info section:\t%ju\n", 5729 (uintmax_t) nt_cu_offset); 5730 printf(" Size of area in .debug_info section:\t%ju\n", 5731 (uintmax_t) nt_cu_length); 5732 5733 if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) { 5734 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de)); 5735 return; 5736 } 5737 5738 printf("\n Offset Name\n"); 5739 for (i = 0; i < cnt; i++) { 5740 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) { 5741 warnx("dwarf_globname failed: %s", dwarf_errmsg(de)); 5742 continue; 5743 } 5744 if (dwarf_global_die_offset(globs[i], &die_off, &de) != 5745 DW_DLV_OK) { 5746 warnx("dwarf_global_die_offset failed: %s", 5747 dwarf_errmsg(de)); 5748 continue; 5749 } 5750 printf(" %-11ju %s\n", (uintmax_t) die_off, glob_name); 5751 } 5752 } 5753 5754 static void 5755 dump_dwarf_aranges(struct readelf *re) 5756 { 5757 struct section *s; 5758 Dwarf_Arange *aranges; 5759 Dwarf_Addr start; 5760 Dwarf_Unsigned offset, length, as_cu_offset; 5761 Dwarf_Off die_off; 5762 Dwarf_Signed cnt; 5763 Dwarf_Half as_version, as_addrsz, as_segsz; 5764 Dwarf_Error de; 5765 Elf_Data *d; 5766 int i, dwarf_size, elferr; 5767 5768 printf("\nContents of section .debug_aranges:\n"); 5769 5770 s = NULL; 5771 for (i = 0; (size_t) i < re->shnum; i++) { 5772 s = &re->sl[i]; 5773 if (s->name != NULL && !strcmp(s->name, ".debug_aranges")) 5774 break; 5775 } 5776 if ((size_t) i >= re->shnum) 5777 return; 5778 5779 (void) elf_errno(); 5780 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 5781 elferr = elf_errno(); 5782 if (elferr != 0) 5783 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 5784 return; 5785 } 5786 if (d->d_size <= 0) 5787 return; 5788 5789 /* Read in the .debug_aranges section table header. */ 5790 offset = 0; 5791 length = re->dw_read(d, &offset, 4); 5792 if (length == 0xffffffff) { 5793 dwarf_size = 8; 5794 length = re->dw_read(d, &offset, 8); 5795 } else 5796 dwarf_size = 4; 5797 5798 if (length > d->d_size - offset) { 5799 warnx("invalid .dwarf_aranges section"); 5800 return; 5801 } 5802 5803 as_version = re->dw_read(d, &offset, 2); 5804 as_cu_offset = re->dw_read(d, &offset, dwarf_size); 5805 as_addrsz = re->dw_read(d, &offset, 1); 5806 as_segsz = re->dw_read(d, &offset, 1); 5807 5808 printf(" Length:\t\t\t%ju\n", (uintmax_t) length); 5809 printf(" Version:\t\t\t%u\n", as_version); 5810 printf(" Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset); 5811 printf(" Pointer Size:\t\t\t%u\n", as_addrsz); 5812 printf(" Segment Size:\t\t\t%u\n", as_segsz); 5813 5814 if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) { 5815 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de)); 5816 return; 5817 } 5818 5819 printf("\n Address Length\n"); 5820 for (i = 0; i < cnt; i++) { 5821 if (dwarf_get_arange_info(aranges[i], &start, &length, 5822 &die_off, &de) != DW_DLV_OK) { 5823 warnx("dwarf_get_arange_info failed: %s", 5824 dwarf_errmsg(de)); 5825 continue; 5826 } 5827 printf(" %08jx %ju\n", (uintmax_t) start, 5828 (uintmax_t) length); 5829 } 5830 } 5831 5832 static void 5833 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base) 5834 { 5835 Dwarf_Attribute *attr_list; 5836 Dwarf_Ranges *ranges; 5837 Dwarf_Die ret_die; 5838 Dwarf_Error de; 5839 Dwarf_Addr base0; 5840 Dwarf_Half attr; 5841 Dwarf_Signed attr_count, cnt; 5842 Dwarf_Unsigned off, bytecnt; 5843 int i, j, ret; 5844 5845 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 5846 DW_DLV_OK) { 5847 if (ret == DW_DLV_ERROR) 5848 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 5849 goto cont_search; 5850 } 5851 5852 for (i = 0; i < attr_count; i++) { 5853 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 5854 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 5855 continue; 5856 } 5857 if (attr != DW_AT_ranges) 5858 continue; 5859 if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) { 5860 warnx("dwarf_formudata failed: %s", dwarf_errmsg(de)); 5861 continue; 5862 } 5863 if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt, 5864 &bytecnt, &de) != DW_DLV_OK) 5865 continue; 5866 base0 = base; 5867 for (j = 0; j < cnt; j++) { 5868 printf(" %08jx ", (uintmax_t) off); 5869 if (ranges[j].dwr_type == DW_RANGES_END) { 5870 printf("%s\n", "<End of list>"); 5871 continue; 5872 } else if (ranges[j].dwr_type == 5873 DW_RANGES_ADDRESS_SELECTION) { 5874 base0 = ranges[j].dwr_addr2; 5875 continue; 5876 } 5877 if (re->ec == ELFCLASS32) 5878 printf("%08jx %08jx\n", 5879 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5880 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5881 else 5882 printf("%016jx %016jx\n", 5883 (uintmax_t) (ranges[j].dwr_addr1 + base0), 5884 (uintmax_t) (ranges[j].dwr_addr2 + base0)); 5885 } 5886 } 5887 5888 cont_search: 5889 /* Search children. */ 5890 ret = dwarf_child(die, &ret_die, &de); 5891 if (ret == DW_DLV_ERROR) 5892 warnx("dwarf_child: %s", dwarf_errmsg(de)); 5893 else if (ret == DW_DLV_OK) 5894 dump_dwarf_ranges_foreach(re, ret_die, base); 5895 5896 /* Search sibling. */ 5897 ret = dwarf_siblingof(re->dbg, die, &ret_die, &de); 5898 if (ret == DW_DLV_ERROR) 5899 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 5900 else if (ret == DW_DLV_OK) 5901 dump_dwarf_ranges_foreach(re, ret_die, base); 5902 } 5903 5904 static void 5905 dump_dwarf_ranges(struct readelf *re) 5906 { 5907 Dwarf_Ranges *ranges; 5908 Dwarf_Die die; 5909 Dwarf_Signed cnt; 5910 Dwarf_Unsigned bytecnt; 5911 Dwarf_Half tag; 5912 Dwarf_Error de; 5913 Dwarf_Unsigned lowpc; 5914 int ret; 5915 5916 if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) != 5917 DW_DLV_OK) 5918 return; 5919 5920 printf("Contents of the .debug_ranges section:\n\n"); 5921 if (re->ec == ELFCLASS32) 5922 printf(" %-8s %-8s %s\n", "Offset", "Begin", "End"); 5923 else 5924 printf(" %-8s %-16s %s\n", "Offset", "Begin", "End"); 5925 5926 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL, 5927 NULL, &de)) == DW_DLV_OK) { 5928 die = NULL; 5929 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 5930 continue; 5931 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 5932 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 5933 continue; 5934 } 5935 /* XXX: What about DW_TAG_partial_unit? */ 5936 lowpc = 0; 5937 if (tag == DW_TAG_compile_unit) { 5938 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc, 5939 &de) != DW_DLV_OK) 5940 lowpc = 0; 5941 } 5942 5943 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc); 5944 } 5945 putchar('\n'); 5946 } 5947 5948 static void 5949 dump_dwarf_macinfo(struct readelf *re) 5950 { 5951 Dwarf_Unsigned offset; 5952 Dwarf_Signed cnt; 5953 Dwarf_Macro_Details *md; 5954 Dwarf_Error de; 5955 const char *mi_str; 5956 char unk_mi[32]; 5957 int i; 5958 5959 #define _MAX_MACINFO_ENTRY 65535 5960 5961 printf("\nContents of section .debug_macinfo:\n\n"); 5962 5963 offset = 0; 5964 while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY, 5965 &cnt, &md, &de) == DW_DLV_OK) { 5966 for (i = 0; i < cnt; i++) { 5967 offset = md[i].dmd_offset + 1; 5968 if (md[i].dmd_type == 0) 5969 break; 5970 if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) != 5971 DW_DLV_OK) { 5972 snprintf(unk_mi, sizeof(unk_mi), 5973 "[Unknown MACINFO: %#x]", md[i].dmd_type); 5974 mi_str = unk_mi; 5975 } 5976 printf(" %s", mi_str); 5977 switch (md[i].dmd_type) { 5978 case DW_MACINFO_define: 5979 case DW_MACINFO_undef: 5980 printf(" - lineno : %jd macro : %s\n", 5981 (intmax_t) md[i].dmd_lineno, 5982 md[i].dmd_macro); 5983 break; 5984 case DW_MACINFO_start_file: 5985 printf(" - lineno : %jd filenum : %jd\n", 5986 (intmax_t) md[i].dmd_lineno, 5987 (intmax_t) md[i].dmd_fileindex); 5988 break; 5989 default: 5990 putchar('\n'); 5991 break; 5992 } 5993 } 5994 } 5995 5996 #undef _MAX_MACINFO_ENTRY 5997 } 5998 5999 static void 6000 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts, 6001 Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc, 6002 Dwarf_Debug dbg) 6003 { 6004 Dwarf_Frame_Op *oplist; 6005 Dwarf_Signed opcnt, delta; 6006 Dwarf_Small op; 6007 Dwarf_Error de; 6008 const char *op_str; 6009 char unk_op[32]; 6010 int i; 6011 6012 if (dwarf_expand_frame_instructions(cie, insts, len, &oplist, 6013 &opcnt, &de) != DW_DLV_OK) { 6014 warnx("dwarf_expand_frame_instructions failed: %s", 6015 dwarf_errmsg(de)); 6016 return; 6017 } 6018 6019 for (i = 0; i < opcnt; i++) { 6020 if (oplist[i].fp_base_op != 0) 6021 op = oplist[i].fp_base_op << 6; 6022 else 6023 op = oplist[i].fp_extended_op; 6024 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) { 6025 snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]", 6026 op); 6027 op_str = unk_op; 6028 } 6029 printf(" %s", op_str); 6030 switch (op) { 6031 case DW_CFA_advance_loc: 6032 delta = oplist[i].fp_offset * caf; 6033 pc += delta; 6034 printf(": %ju to %08jx", (uintmax_t) delta, 6035 (uintmax_t) pc); 6036 break; 6037 case DW_CFA_offset: 6038 case DW_CFA_offset_extended: 6039 case DW_CFA_offset_extended_sf: 6040 delta = oplist[i].fp_offset * daf; 6041 printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register, 6042 dwarf_regname(re, oplist[i].fp_register), 6043 (intmax_t) delta); 6044 break; 6045 case DW_CFA_restore: 6046 printf(": r%u (%s)", oplist[i].fp_register, 6047 dwarf_regname(re, oplist[i].fp_register)); 6048 break; 6049 case DW_CFA_set_loc: 6050 pc = oplist[i].fp_offset; 6051 printf(": to %08jx", (uintmax_t) pc); 6052 break; 6053 case DW_CFA_advance_loc1: 6054 case DW_CFA_advance_loc2: 6055 case DW_CFA_advance_loc4: 6056 pc += oplist[i].fp_offset; 6057 printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset, 6058 (uintmax_t) pc); 6059 break; 6060 case DW_CFA_def_cfa: 6061 printf(": r%u (%s) ofs %ju", oplist[i].fp_register, 6062 dwarf_regname(re, oplist[i].fp_register), 6063 (uintmax_t) oplist[i].fp_offset); 6064 break; 6065 case DW_CFA_def_cfa_sf: 6066 printf(": r%u (%s) ofs %jd", oplist[i].fp_register, 6067 dwarf_regname(re, oplist[i].fp_register), 6068 (intmax_t) (oplist[i].fp_offset * daf)); 6069 break; 6070 case DW_CFA_def_cfa_register: 6071 printf(": r%u (%s)", oplist[i].fp_register, 6072 dwarf_regname(re, oplist[i].fp_register)); 6073 break; 6074 case DW_CFA_def_cfa_offset: 6075 printf(": %ju", (uintmax_t) oplist[i].fp_offset); 6076 break; 6077 case DW_CFA_def_cfa_offset_sf: 6078 printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf)); 6079 break; 6080 default: 6081 break; 6082 } 6083 putchar('\n'); 6084 } 6085 6086 dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK); 6087 } 6088 6089 static char * 6090 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off) 6091 { 6092 static char rs[16]; 6093 6094 if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE) 6095 snprintf(rs, sizeof(rs), "%c", 'u'); 6096 else if (reg == DW_FRAME_CFA_COL) 6097 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off); 6098 else 6099 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg), 6100 (intmax_t) off); 6101 6102 return (rs); 6103 } 6104 6105 static int 6106 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc, 6107 Dwarf_Unsigned func_len, Dwarf_Half cie_ra) 6108 { 6109 Dwarf_Regtable rt; 6110 Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc; 6111 Dwarf_Error de; 6112 char *vec; 6113 int i; 6114 6115 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7)) 6116 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7))) 6117 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7))) 6118 #define RT(x) rt.rules[(x)] 6119 6120 vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1); 6121 if (vec == NULL) 6122 err(EXIT_FAILURE, "calloc failed"); 6123 6124 pre_pc = ~((Dwarf_Addr) 0); 6125 cur_pc = pc; 6126 end_pc = pc + func_len; 6127 for (; cur_pc < end_pc; cur_pc++) { 6128 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 6129 &de) != DW_DLV_OK) { 6130 free(vec); 6131 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 6132 dwarf_errmsg(de)); 6133 return (-1); 6134 } 6135 if (row_pc == pre_pc) 6136 continue; 6137 pre_pc = row_pc; 6138 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 6139 if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE) 6140 BIT_SET(vec, i); 6141 } 6142 } 6143 6144 printf(" LOC CFA "); 6145 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 6146 if (BIT_ISSET(vec, i)) { 6147 if ((Dwarf_Half) i == cie_ra) 6148 printf("ra "); 6149 else 6150 printf("%-5s", 6151 dwarf_regname(re, (unsigned int) i)); 6152 } 6153 } 6154 putchar('\n'); 6155 6156 pre_pc = ~((Dwarf_Addr) 0); 6157 cur_pc = pc; 6158 end_pc = pc + func_len; 6159 for (; cur_pc < end_pc; cur_pc++) { 6160 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc, 6161 &de) != DW_DLV_OK) { 6162 free(vec); 6163 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n", 6164 dwarf_errmsg(de)); 6165 return (-1); 6166 } 6167 if (row_pc == pre_pc) 6168 continue; 6169 pre_pc = row_pc; 6170 printf("%08jx ", (uintmax_t) row_pc); 6171 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum, 6172 RT(0).dw_offset)); 6173 for (i = 1; i < DW_REG_TABLE_SIZE; i++) { 6174 if (BIT_ISSET(vec, i)) { 6175 printf("%-5s", get_regoff_str(re, 6176 RT(i).dw_regnum, RT(i).dw_offset)); 6177 } 6178 } 6179 putchar('\n'); 6180 } 6181 6182 free(vec); 6183 6184 return (0); 6185 6186 #undef BIT_SET 6187 #undef BIT_CLR 6188 #undef BIT_ISSET 6189 #undef RT 6190 } 6191 6192 static void 6193 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt) 6194 { 6195 Dwarf_Cie *cie_list, cie, pre_cie; 6196 Dwarf_Fde *fde_list, fde; 6197 Dwarf_Off cie_offset, fde_offset; 6198 Dwarf_Unsigned cie_length, fde_instlen; 6199 Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length; 6200 Dwarf_Signed cie_count, fde_count, cie_index; 6201 Dwarf_Addr low_pc; 6202 Dwarf_Half cie_ra; 6203 Dwarf_Small cie_version; 6204 Dwarf_Ptr fde_addr, fde_inst, cie_inst; 6205 char *cie_aug, c; 6206 int i, eh_frame; 6207 Dwarf_Error de; 6208 6209 printf("\nThe section %s contains:\n\n", s->name); 6210 6211 if (!strcmp(s->name, ".debug_frame")) { 6212 eh_frame = 0; 6213 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count, 6214 &fde_list, &fde_count, &de) != DW_DLV_OK) { 6215 warnx("dwarf_get_fde_list failed: %s", 6216 dwarf_errmsg(de)); 6217 return; 6218 } 6219 } else if (!strcmp(s->name, ".eh_frame")) { 6220 eh_frame = 1; 6221 if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count, 6222 &fde_list, &fde_count, &de) != DW_DLV_OK) { 6223 warnx("dwarf_get_fde_list_eh failed: %s", 6224 dwarf_errmsg(de)); 6225 return; 6226 } 6227 } else 6228 return; 6229 6230 pre_cie = NULL; 6231 for (i = 0; i < fde_count; i++) { 6232 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) { 6233 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 6234 continue; 6235 } 6236 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) { 6237 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de)); 6238 continue; 6239 } 6240 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr, 6241 &fde_length, &cie_offset, &cie_index, &fde_offset, 6242 &de) != DW_DLV_OK) { 6243 warnx("dwarf_get_fde_range failed: %s", 6244 dwarf_errmsg(de)); 6245 continue; 6246 } 6247 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen, 6248 &de) != DW_DLV_OK) { 6249 warnx("dwarf_get_fde_instr_bytes failed: %s", 6250 dwarf_errmsg(de)); 6251 continue; 6252 } 6253 if (pre_cie == NULL || cie != pre_cie) { 6254 pre_cie = cie; 6255 if (dwarf_get_cie_info(cie, &cie_length, &cie_version, 6256 &cie_aug, &cie_caf, &cie_daf, &cie_ra, 6257 &cie_inst, &cie_instlen, &de) != DW_DLV_OK) { 6258 warnx("dwarf_get_cie_info failed: %s", 6259 dwarf_errmsg(de)); 6260 continue; 6261 } 6262 printf("%08jx %08jx %8.8jx CIE", 6263 (uintmax_t) cie_offset, 6264 (uintmax_t) cie_length, 6265 (uintmax_t) (eh_frame ? 0 : ~0U)); 6266 if (!alt) { 6267 putchar('\n'); 6268 printf(" Version:\t\t\t%u\n", cie_version); 6269 printf(" Augmentation:\t\t\t\""); 6270 while ((c = *cie_aug++) != '\0') 6271 putchar(c); 6272 printf("\"\n"); 6273 printf(" Code alignment factor:\t%ju\n", 6274 (uintmax_t) cie_caf); 6275 printf(" Data alignment factor:\t%jd\n", 6276 (intmax_t) cie_daf); 6277 printf(" Return address column:\t%ju\n", 6278 (uintmax_t) cie_ra); 6279 putchar('\n'); 6280 dump_dwarf_frame_inst(re, cie, cie_inst, 6281 cie_instlen, cie_caf, cie_daf, 0, 6282 re->dbg); 6283 putchar('\n'); 6284 } else { 6285 printf(" \""); 6286 while ((c = *cie_aug++) != '\0') 6287 putchar(c); 6288 putchar('"'); 6289 printf(" cf=%ju df=%jd ra=%ju\n", 6290 (uintmax_t) cie_caf, 6291 (uintmax_t) cie_daf, 6292 (uintmax_t) cie_ra); 6293 dump_dwarf_frame_regtable(re, fde, low_pc, 1, 6294 cie_ra); 6295 putchar('\n'); 6296 } 6297 } 6298 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n", 6299 (uintmax_t) fde_offset, (uintmax_t) fde_length, 6300 (uintmax_t) cie_offset, 6301 (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset : 6302 cie_offset), 6303 (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len)); 6304 if (!alt) 6305 dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen, 6306 cie_caf, cie_daf, low_pc, re->dbg); 6307 else 6308 dump_dwarf_frame_regtable(re, fde, low_pc, func_len, 6309 cie_ra); 6310 putchar('\n'); 6311 } 6312 } 6313 6314 static void 6315 dump_dwarf_frame(struct readelf *re, int alt) 6316 { 6317 struct section *s; 6318 int i; 6319 6320 (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL); 6321 6322 for (i = 0; (size_t) i < re->shnum; i++) { 6323 s = &re->sl[i]; 6324 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") || 6325 !strcmp(s->name, ".eh_frame"))) 6326 dump_dwarf_frame_section(re, s, alt); 6327 } 6328 } 6329 6330 static void 6331 dump_dwarf_str(struct readelf *re) 6332 { 6333 struct section *s; 6334 Elf_Data *d; 6335 unsigned char *p; 6336 int elferr, end, i, j; 6337 6338 printf("\nContents of section .debug_str:\n"); 6339 6340 s = NULL; 6341 for (i = 0; (size_t) i < re->shnum; i++) { 6342 s = &re->sl[i]; 6343 if (s->name != NULL && !strcmp(s->name, ".debug_str")) 6344 break; 6345 } 6346 if ((size_t) i >= re->shnum) 6347 return; 6348 6349 (void) elf_errno(); 6350 if ((d = elf_getdata(s->scn, NULL)) == NULL) { 6351 elferr = elf_errno(); 6352 if (elferr != 0) 6353 warnx("elf_getdata failed: %s", elf_errmsg(-1)); 6354 return; 6355 } 6356 if (d->d_size <= 0) 6357 return; 6358 6359 for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) { 6360 printf(" 0x%08x", (unsigned int) i); 6361 if ((size_t) i + 16 > d->d_size) 6362 end = d->d_size; 6363 else 6364 end = i + 16; 6365 for (j = i; j < i + 16; j++) { 6366 if ((j - i) % 4 == 0) 6367 putchar(' '); 6368 if (j >= end) { 6369 printf(" "); 6370 continue; 6371 } 6372 printf("%02x", (uint8_t) p[j]); 6373 } 6374 putchar(' '); 6375 for (j = i; j < end; j++) { 6376 if (isprint(p[j])) 6377 putchar(p[j]); 6378 else if (p[j] == 0) 6379 putchar('.'); 6380 else 6381 putchar(' '); 6382 } 6383 putchar('\n'); 6384 } 6385 } 6386 6387 static int 6388 loc_at_comparator(const void *la1, const void *la2) 6389 { 6390 const struct loc_at *left, *right; 6391 6392 left = (const struct loc_at *)la1; 6393 right = (const struct loc_at *)la2; 6394 6395 if (left->la_off > right->la_off) 6396 return (1); 6397 else if (left->la_off < right->la_off) 6398 return (-1); 6399 else 6400 return (0); 6401 } 6402 6403 static void 6404 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc, 6405 struct loc_at **la_list, size_t *la_list_len, size_t *la_list_cap) 6406 { 6407 struct loc_at *la; 6408 Dwarf_Attribute *attr_list; 6409 Dwarf_Die ret_die; 6410 Dwarf_Unsigned off; 6411 Dwarf_Off ref; 6412 Dwarf_Signed attr_count; 6413 Dwarf_Half attr, form; 6414 Dwarf_Bool is_info; 6415 Dwarf_Error de; 6416 int i, ret; 6417 6418 is_info = dwarf_get_die_infotypes_flag(die); 6419 6420 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) != 6421 DW_DLV_OK) { 6422 if (ret == DW_DLV_ERROR) 6423 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de)); 6424 goto cont_search; 6425 } 6426 for (i = 0; i < attr_count; i++) { 6427 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) { 6428 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de)); 6429 continue; 6430 } 6431 if (attr != DW_AT_location && 6432 attr != DW_AT_string_length && 6433 attr != DW_AT_return_addr && 6434 attr != DW_AT_data_member_location && 6435 attr != DW_AT_frame_base && 6436 attr != DW_AT_segment && 6437 attr != DW_AT_static_link && 6438 attr != DW_AT_use_location && 6439 attr != DW_AT_vtable_elem_location) 6440 continue; 6441 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) { 6442 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de)); 6443 continue; 6444 } 6445 if (form == DW_FORM_data4 || form == DW_FORM_data8) { 6446 if (dwarf_formudata(attr_list[i], &off, &de) != 6447 DW_DLV_OK) { 6448 warnx("dwarf_formudata failed: %s", 6449 dwarf_errmsg(de)); 6450 continue; 6451 } 6452 } else if (form == DW_FORM_sec_offset) { 6453 if (dwarf_global_formref(attr_list[i], &ref, &de) != 6454 DW_DLV_OK) { 6455 warnx("dwarf_global_formref failed: %s", 6456 dwarf_errmsg(de)); 6457 continue; 6458 } 6459 off = ref; 6460 } else 6461 continue; 6462 6463 if (*la_list_cap == *la_list_len) { 6464 *la_list = realloc(*la_list, 6465 *la_list_cap * 2 * sizeof(**la_list)); 6466 if (*la_list == NULL) 6467 err(EXIT_FAILURE, "realloc failed"); 6468 *la_list_cap *= 2; 6469 } 6470 la = &((*la_list)[*la_list_len]); 6471 la->la_at = attr_list[i]; 6472 la->la_off = off; 6473 la->la_lowpc = lowpc; 6474 la->la_cu_psize = re->cu_psize; 6475 la->la_cu_osize = re->cu_osize; 6476 la->la_cu_ver = re->cu_ver; 6477 (*la_list_len)++; 6478 } 6479 6480 cont_search: 6481 /* Search children. */ 6482 ret = dwarf_child(die, &ret_die, &de); 6483 if (ret == DW_DLV_ERROR) 6484 warnx("dwarf_child: %s", dwarf_errmsg(de)); 6485 else if (ret == DW_DLV_OK) 6486 search_loclist_at(re, ret_die, lowpc, la_list, 6487 la_list_len, la_list_cap); 6488 6489 /* Search sibling. */ 6490 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de); 6491 if (ret == DW_DLV_ERROR) 6492 warnx("dwarf_siblingof: %s", dwarf_errmsg(de)); 6493 else if (ret == DW_DLV_OK) 6494 search_loclist_at(re, ret_die, lowpc, la_list, 6495 la_list_len, la_list_cap); 6496 } 6497 6498 static void 6499 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr) 6500 { 6501 const char *op_str; 6502 char unk_op[32]; 6503 uint8_t *b, n; 6504 int i; 6505 6506 if (dwarf_get_OP_name(lr->lr_atom, &op_str) != 6507 DW_DLV_OK) { 6508 snprintf(unk_op, sizeof(unk_op), 6509 "[Unknown OP: %#x]", lr->lr_atom); 6510 op_str = unk_op; 6511 } 6512 6513 printf("%s", op_str); 6514 6515 switch (lr->lr_atom) { 6516 case DW_OP_reg0: 6517 case DW_OP_reg1: 6518 case DW_OP_reg2: 6519 case DW_OP_reg3: 6520 case DW_OP_reg4: 6521 case DW_OP_reg5: 6522 case DW_OP_reg6: 6523 case DW_OP_reg7: 6524 case DW_OP_reg8: 6525 case DW_OP_reg9: 6526 case DW_OP_reg10: 6527 case DW_OP_reg11: 6528 case DW_OP_reg12: 6529 case DW_OP_reg13: 6530 case DW_OP_reg14: 6531 case DW_OP_reg15: 6532 case DW_OP_reg16: 6533 case DW_OP_reg17: 6534 case DW_OP_reg18: 6535 case DW_OP_reg19: 6536 case DW_OP_reg20: 6537 case DW_OP_reg21: 6538 case DW_OP_reg22: 6539 case DW_OP_reg23: 6540 case DW_OP_reg24: 6541 case DW_OP_reg25: 6542 case DW_OP_reg26: 6543 case DW_OP_reg27: 6544 case DW_OP_reg28: 6545 case DW_OP_reg29: 6546 case DW_OP_reg30: 6547 case DW_OP_reg31: 6548 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0)); 6549 break; 6550 6551 case DW_OP_deref: 6552 case DW_OP_lit0: 6553 case DW_OP_lit1: 6554 case DW_OP_lit2: 6555 case DW_OP_lit3: 6556 case DW_OP_lit4: 6557 case DW_OP_lit5: 6558 case DW_OP_lit6: 6559 case DW_OP_lit7: 6560 case DW_OP_lit8: 6561 case DW_OP_lit9: 6562 case DW_OP_lit10: 6563 case DW_OP_lit11: 6564 case DW_OP_lit12: 6565 case DW_OP_lit13: 6566 case DW_OP_lit14: 6567 case DW_OP_lit15: 6568 case DW_OP_lit16: 6569 case DW_OP_lit17: 6570 case DW_OP_lit18: 6571 case DW_OP_lit19: 6572 case DW_OP_lit20: 6573 case DW_OP_lit21: 6574 case DW_OP_lit22: 6575 case DW_OP_lit23: 6576 case DW_OP_lit24: 6577 case DW_OP_lit25: 6578 case DW_OP_lit26: 6579 case DW_OP_lit27: 6580 case DW_OP_lit28: 6581 case DW_OP_lit29: 6582 case DW_OP_lit30: 6583 case DW_OP_lit31: 6584 case DW_OP_dup: 6585 case DW_OP_drop: 6586 case DW_OP_over: 6587 case DW_OP_swap: 6588 case DW_OP_rot: 6589 case DW_OP_xderef: 6590 case DW_OP_abs: 6591 case DW_OP_and: 6592 case DW_OP_div: 6593 case DW_OP_minus: 6594 case DW_OP_mod: 6595 case DW_OP_mul: 6596 case DW_OP_neg: 6597 case DW_OP_not: 6598 case DW_OP_or: 6599 case DW_OP_plus: 6600 case DW_OP_shl: 6601 case DW_OP_shr: 6602 case DW_OP_shra: 6603 case DW_OP_xor: 6604 case DW_OP_eq: 6605 case DW_OP_ge: 6606 case DW_OP_gt: 6607 case DW_OP_le: 6608 case DW_OP_lt: 6609 case DW_OP_ne: 6610 case DW_OP_nop: 6611 case DW_OP_push_object_address: 6612 case DW_OP_form_tls_address: 6613 case DW_OP_call_frame_cfa: 6614 case DW_OP_stack_value: 6615 case DW_OP_GNU_push_tls_address: 6616 case DW_OP_GNU_uninit: 6617 break; 6618 6619 case DW_OP_const1u: 6620 case DW_OP_pick: 6621 case DW_OP_deref_size: 6622 case DW_OP_xderef_size: 6623 case DW_OP_const2u: 6624 case DW_OP_bra: 6625 case DW_OP_skip: 6626 case DW_OP_const4u: 6627 case DW_OP_const8u: 6628 case DW_OP_constu: 6629 case DW_OP_plus_uconst: 6630 case DW_OP_regx: 6631 case DW_OP_piece: 6632 printf(": %ju", (uintmax_t) 6633 lr->lr_number); 6634 break; 6635 6636 case DW_OP_const1s: 6637 case DW_OP_const2s: 6638 case DW_OP_const4s: 6639 case DW_OP_const8s: 6640 case DW_OP_consts: 6641 printf(": %jd", (intmax_t) 6642 lr->lr_number); 6643 break; 6644 6645 case DW_OP_breg0: 6646 case DW_OP_breg1: 6647 case DW_OP_breg2: 6648 case DW_OP_breg3: 6649 case DW_OP_breg4: 6650 case DW_OP_breg5: 6651 case DW_OP_breg6: 6652 case DW_OP_breg7: 6653 case DW_OP_breg8: 6654 case DW_OP_breg9: 6655 case DW_OP_breg10: 6656 case DW_OP_breg11: 6657 case DW_OP_breg12: 6658 case DW_OP_breg13: 6659 case DW_OP_breg14: 6660 case DW_OP_breg15: 6661 case DW_OP_breg16: 6662 case DW_OP_breg17: 6663 case DW_OP_breg18: 6664 case DW_OP_breg19: 6665 case DW_OP_breg20: 6666 case DW_OP_breg21: 6667 case DW_OP_breg22: 6668 case DW_OP_breg23: 6669 case DW_OP_breg24: 6670 case DW_OP_breg25: 6671 case DW_OP_breg26: 6672 case DW_OP_breg27: 6673 case DW_OP_breg28: 6674 case DW_OP_breg29: 6675 case DW_OP_breg30: 6676 case DW_OP_breg31: 6677 printf(" (%s): %jd", 6678 dwarf_regname(re, lr->lr_atom - DW_OP_breg0), 6679 (intmax_t) lr->lr_number); 6680 break; 6681 6682 case DW_OP_fbreg: 6683 printf(": %jd", (intmax_t) 6684 lr->lr_number); 6685 break; 6686 6687 case DW_OP_bregx: 6688 printf(": %ju (%s) %jd", 6689 (uintmax_t) lr->lr_number, 6690 dwarf_regname(re, (unsigned int) lr->lr_number), 6691 (intmax_t) lr->lr_number2); 6692 break; 6693 6694 case DW_OP_addr: 6695 case DW_OP_GNU_encoded_addr: 6696 printf(": %#jx", (uintmax_t) 6697 lr->lr_number); 6698 break; 6699 6700 case DW_OP_GNU_implicit_pointer: 6701 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number, 6702 (intmax_t) lr->lr_number2); 6703 break; 6704 6705 case DW_OP_implicit_value: 6706 printf(": %ju byte block:", (uintmax_t) lr->lr_number); 6707 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6708 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++) 6709 printf(" %x", b[i]); 6710 break; 6711 6712 case DW_OP_GNU_entry_value: 6713 printf(": ("); 6714 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2, 6715 lr->lr_number); 6716 putchar(')'); 6717 break; 6718 6719 case DW_OP_GNU_const_type: 6720 printf(": <0x%jx> ", (uintmax_t) lr->lr_number); 6721 b = (uint8_t *)(uintptr_t) lr->lr_number2; 6722 n = *b; 6723 for (i = 1; (uint8_t) i < n; i++) 6724 printf(" %x", b[i]); 6725 break; 6726 6727 case DW_OP_GNU_regval_type: 6728 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number, 6729 dwarf_regname(re, (unsigned int) lr->lr_number), 6730 (uintmax_t) lr->lr_number2); 6731 break; 6732 6733 case DW_OP_GNU_convert: 6734 case DW_OP_GNU_deref_type: 6735 case DW_OP_GNU_parameter_ref: 6736 case DW_OP_GNU_reinterpret: 6737 printf(": <0x%jx>", (uintmax_t) lr->lr_number); 6738 break; 6739 6740 default: 6741 break; 6742 } 6743 } 6744 6745 static void 6746 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len) 6747 { 6748 Dwarf_Locdesc *llbuf; 6749 Dwarf_Signed lcnt; 6750 Dwarf_Error de; 6751 int i; 6752 6753 if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize, 6754 re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) { 6755 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de)); 6756 return; 6757 } 6758 6759 for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) { 6760 dump_dwarf_loc(re, &llbuf->ld_s[i]); 6761 if (i < llbuf->ld_cents - 1) 6762 printf("; "); 6763 } 6764 6765 dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK); 6766 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC); 6767 } 6768 6769 static void 6770 dump_dwarf_loclist(struct readelf *re) 6771 { 6772 Dwarf_Die die; 6773 Dwarf_Locdesc **llbuf; 6774 Dwarf_Unsigned lowpc; 6775 Dwarf_Signed lcnt; 6776 Dwarf_Half tag, version, pointer_size, off_size; 6777 Dwarf_Error de; 6778 struct loc_at *la_list, *left, *right, *la; 6779 size_t la_list_len, la_list_cap; 6780 unsigned int duplicates, k; 6781 int i, j, ret, has_content; 6782 6783 la_list_len = 0; 6784 la_list_cap = 200; 6785 if ((la_list = calloc(la_list_cap, sizeof(struct loc_at))) == NULL) 6786 errx(EXIT_FAILURE, "calloc failed"); 6787 /* Search .debug_info section. */ 6788 while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL, 6789 &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) { 6790 set_cu_context(re, pointer_size, off_size, version); 6791 die = NULL; 6792 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK) 6793 continue; 6794 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6795 warnx("dwarf_tag failed: %s", dwarf_errmsg(de)); 6796 continue; 6797 } 6798 /* XXX: What about DW_TAG_partial_unit? */ 6799 lowpc = 0; 6800 if (tag == DW_TAG_compile_unit) { 6801 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6802 &lowpc, &de) != DW_DLV_OK) 6803 lowpc = 0; 6804 } 6805 6806 /* Search attributes for reference to .debug_loc section. */ 6807 search_loclist_at(re, die, lowpc, &la_list, 6808 &la_list_len, &la_list_cap); 6809 } 6810 if (ret == DW_DLV_ERROR) 6811 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6812 6813 /* Search .debug_types section. */ 6814 do { 6815 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL, 6816 &version, NULL, &pointer_size, &off_size, NULL, NULL, 6817 NULL, NULL, &de)) == DW_DLV_OK) { 6818 set_cu_context(re, pointer_size, off_size, version); 6819 die = NULL; 6820 if (dwarf_siblingof(re->dbg, die, &die, &de) != 6821 DW_DLV_OK) 6822 continue; 6823 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) { 6824 warnx("dwarf_tag failed: %s", 6825 dwarf_errmsg(de)); 6826 continue; 6827 } 6828 6829 lowpc = 0; 6830 if (tag == DW_TAG_type_unit) { 6831 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, 6832 &lowpc, &de) != DW_DLV_OK) 6833 lowpc = 0; 6834 } 6835 6836 /* 6837 * Search attributes for reference to .debug_loc 6838 * section. 6839 */ 6840 search_loclist_at(re, die, lowpc, &la_list, 6841 &la_list_len, &la_list_cap); 6842 } 6843 if (ret == DW_DLV_ERROR) 6844 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de)); 6845 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK); 6846 6847 if (la_list_len == 0) { 6848 free(la_list); 6849 return; 6850 } 6851 6852 /* Sort la_list using loc_at_comparator. */ 6853 qsort(la_list, la_list_len, sizeof(struct loc_at), loc_at_comparator); 6854 6855 /* Get rid of the duplicates in la_list. */ 6856 duplicates = 0; 6857 for (k = 1; k < la_list_len; ++k) { 6858 left = &la_list[k - 1 - duplicates]; 6859 right = &la_list[k]; 6860 6861 if (left->la_off == right->la_off) 6862 duplicates++; 6863 else 6864 la_list[k - duplicates] = *right; 6865 } 6866 la_list_len -= duplicates; 6867 6868 has_content = 0; 6869 for (k = 0; k < la_list_len; ++k) { 6870 la = &la_list[k]; 6871 if ((ret = dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de)) != 6872 DW_DLV_OK) { 6873 if (ret != DW_DLV_NO_ENTRY) 6874 warnx("dwarf_loclist_n failed: %s", 6875 dwarf_errmsg(de)); 6876 continue; 6877 } 6878 if (!has_content) { 6879 has_content = 1; 6880 printf("\nContents of section .debug_loc:\n"); 6881 printf(" Offset Begin End Expression\n"); 6882 } 6883 set_cu_context(re, la->la_cu_psize, la->la_cu_osize, 6884 la->la_cu_ver); 6885 for (i = 0; i < lcnt; i++) { 6886 printf(" %8.8jx ", (uintmax_t) la->la_off); 6887 if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) { 6888 printf("<End of list>\n"); 6889 continue; 6890 } 6891 6892 /* TODO: handle base selection entry. */ 6893 6894 printf("%8.8jx %8.8jx ", 6895 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc), 6896 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc)); 6897 6898 putchar('('); 6899 for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) { 6900 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]); 6901 if (j < llbuf[i]->ld_cents - 1) 6902 printf("; "); 6903 } 6904 putchar(')'); 6905 6906 if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc) 6907 printf(" (start == end)"); 6908 putchar('\n'); 6909 } 6910 for (i = 0; i < lcnt; i++) { 6911 dwarf_dealloc(re->dbg, llbuf[i]->ld_s, 6912 DW_DLA_LOC_BLOCK); 6913 dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC); 6914 } 6915 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST); 6916 } 6917 6918 if (!has_content) 6919 printf("\nSection '.debug_loc' has no debugging data.\n"); 6920 6921 free(la_list); 6922 } 6923 6924 /* 6925 * Retrieve a string using string table section index and the string offset. 6926 */ 6927 static const char* 6928 get_string(struct readelf *re, int strtab, size_t off) 6929 { 6930 const char *name; 6931 6932 if ((name = elf_strptr(re->elf, strtab, off)) == NULL) 6933 return (""); 6934 6935 return (name); 6936 } 6937 6938 /* 6939 * Retrieve the name of a symbol using the section index of the symbol 6940 * table and the index of the symbol within that table. 6941 */ 6942 static const char * 6943 get_symbol_name(struct readelf *re, int symtab, int i) 6944 { 6945 struct section *s; 6946 const char *name; 6947 GElf_Sym sym; 6948 Elf_Data *data; 6949 int elferr; 6950 6951 s = &re->sl[symtab]; 6952 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6953 return (""); 6954 (void) elf_errno(); 6955 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6956 elferr = elf_errno(); 6957 if (elferr != 0) 6958 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6959 return (""); 6960 } 6961 if (gelf_getsym(data, i, &sym) != &sym) 6962 return (""); 6963 /* Return section name for STT_SECTION symbol. */ 6964 if (GELF_ST_TYPE(sym.st_info) == STT_SECTION) { 6965 if (sym.st_shndx < re->shnum && 6966 re->sl[sym.st_shndx].name != NULL) 6967 return (re->sl[sym.st_shndx].name); 6968 return (""); 6969 } 6970 if (s->link >= re->shnum || 6971 (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL) 6972 return (""); 6973 6974 return (name); 6975 } 6976 6977 static uint64_t 6978 get_symbol_value(struct readelf *re, int symtab, int i) 6979 { 6980 struct section *s; 6981 GElf_Sym sym; 6982 Elf_Data *data; 6983 int elferr; 6984 6985 s = &re->sl[symtab]; 6986 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM) 6987 return (0); 6988 (void) elf_errno(); 6989 if ((data = elf_getdata(s->scn, NULL)) == NULL) { 6990 elferr = elf_errno(); 6991 if (elferr != 0) 6992 warnx("elf_getdata failed: %s", elf_errmsg(elferr)); 6993 return (0); 6994 } 6995 if (gelf_getsym(data, i, &sym) != &sym) 6996 return (0); 6997 6998 return (sym.st_value); 6999 } 7000 7001 /* 7002 * Decompress a data section if needed (using ZLIB). 7003 * Returns true if sucessful, false otherwise. 7004 */ 7005 static bool decompress_section(struct section *s, 7006 unsigned char *compressed_data_buffer, size_t compressed_size, 7007 unsigned char **ret_buf, size_t *ret_sz) 7008 { 7009 GElf_Shdr sh; 7010 7011 if (gelf_getshdr(s->scn, &sh) == NULL) 7012 errx(EXIT_FAILURE, "gelf_getshdr() failed: %s", elf_errmsg(-1)); 7013 7014 if (sh.sh_flags & SHF_COMPRESSED) { 7015 int ret; 7016 GElf_Chdr chdr; 7017 Elf64_Xword inflated_size; 7018 unsigned char *uncompressed_data_buffer = NULL; 7019 Elf64_Xword uncompressed_size; 7020 z_stream strm; 7021 7022 if (gelf_getchdr(s->scn, &chdr) == NULL) 7023 errx(EXIT_FAILURE, "gelf_getchdr() failed: %s", elf_errmsg(-1)); 7024 if (chdr.ch_type != ELFCOMPRESS_ZLIB) { 7025 warnx("unknown compression type: %d", chdr.ch_type); 7026 return (false); 7027 } 7028 7029 inflated_size = 0; 7030 uncompressed_size = chdr.ch_size; 7031 uncompressed_data_buffer = malloc(uncompressed_size); 7032 compressed_data_buffer += sizeof(chdr); 7033 compressed_size -= sizeof(chdr); 7034 7035 strm.zalloc = Z_NULL; 7036 strm.zfree = Z_NULL; 7037 strm.opaque = Z_NULL; 7038 strm.avail_in = compressed_size; 7039 strm.avail_out = uncompressed_size; 7040 ret = inflateInit(&strm); 7041 7042 if (ret != Z_OK) 7043 goto fail; 7044 /* 7045 * The section can contain several compressed buffers, 7046 * so decompress in a loop until all data is inflated. 7047 */ 7048 while (inflated_size < compressed_size) { 7049 strm.next_in = compressed_data_buffer + inflated_size; 7050 strm.next_out = uncompressed_data_buffer + inflated_size; 7051 ret = inflate(&strm, Z_FINISH); 7052 if (ret != Z_STREAM_END) 7053 goto fail; 7054 inflated_size = uncompressed_size - strm.avail_out; 7055 ret = inflateReset(&strm); 7056 if (ret != Z_OK) 7057 goto fail; 7058 } 7059 if (strm.avail_out != 0) 7060 warnx("Warning: wrong info in compression header."); 7061 ret = inflateEnd(&strm); 7062 if (ret != Z_OK) 7063 goto fail; 7064 *ret_buf = uncompressed_data_buffer; 7065 *ret_sz = uncompressed_size; 7066 return (true); 7067 fail: 7068 inflateEnd(&strm); 7069 if (strm.msg) 7070 warnx("%s", strm.msg); 7071 else 7072 warnx("ZLIB error: %d", ret); 7073 free(uncompressed_data_buffer); 7074 return (false); 7075 } 7076 return (false); 7077 } 7078 7079 static void 7080 hex_dump(struct readelf *re) 7081 { 7082 struct section *s; 7083 Elf_Data *d; 7084 uint8_t *buf, *new_buf; 7085 size_t sz, nbytes; 7086 uint64_t addr; 7087 int elferr, i, j; 7088 7089 for (i = 1; (size_t) i < re->shnum; i++) { 7090 new_buf = NULL; 7091 s = &re->sl[i]; 7092 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL) 7093 continue; 7094 (void) elf_errno(); 7095 if ((d = elf_getdata(s->scn, NULL)) == NULL && 7096 (d = elf_rawdata(s->scn, NULL)) == NULL) { 7097 elferr = elf_errno(); 7098 if (elferr != 0) 7099 warnx("elf_getdata failed: %s", 7100 elf_errmsg(elferr)); 7101 continue; 7102 } 7103 (void) elf_errno(); 7104 if (d->d_size <= 0 || d->d_buf == NULL) { 7105 printf("\nSection '%s' has no data to dump.\n", 7106 s->name); 7107 continue; 7108 } 7109 buf = d->d_buf; 7110 sz = d->d_size; 7111 addr = s->addr; 7112 if (re->options & RE_Z) { 7113 if (decompress_section(s, d->d_buf, d->d_size, 7114 &new_buf, &sz)) 7115 buf = new_buf; 7116 } 7117 printf("\nHex dump of section '%s':\n", s->name); 7118 while (sz > 0) { 7119 printf(" 0x%8.8jx ", (uintmax_t)addr); 7120 nbytes = sz > 16? 16 : sz; 7121 for (j = 0; j < 16; j++) { 7122 if ((size_t)j < nbytes) 7123 printf("%2.2x", buf[j]); 7124 else 7125 printf(" "); 7126 if ((j & 3) == 3) 7127 printf(" "); 7128 } 7129 for (j = 0; (size_t)j < nbytes; j++) { 7130 if (isprint(buf[j])) 7131 printf("%c", buf[j]); 7132 else 7133 printf("."); 7134 } 7135 printf("\n"); 7136 buf += nbytes; 7137 addr += nbytes; 7138 sz -= nbytes; 7139 } 7140 free(new_buf); 7141 } 7142 } 7143 7144 static void 7145 str_dump(struct readelf *re) 7146 { 7147 struct section *s; 7148 Elf_Data *d; 7149 unsigned char *start, *end, *buf_end, *new_buf; 7150 unsigned int len; 7151 size_t sz; 7152 int i, j, elferr, found; 7153 7154 for (i = 1; (size_t) i < re->shnum; i++) { 7155 new_buf = NULL; 7156 s = &re->sl[i]; 7157 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL) 7158 continue; 7159 (void) elf_errno(); 7160 if ((d = elf_getdata(s->scn, NULL)) == NULL && 7161 (d = elf_rawdata(s->scn, NULL)) == NULL) { 7162 elferr = elf_errno(); 7163 if (elferr != 0) 7164 warnx("elf_getdata failed: %s", 7165 elf_errmsg(elferr)); 7166 continue; 7167 } 7168 (void) elf_errno(); 7169 if (d->d_size <= 0 || d->d_buf == NULL) { 7170 printf("\nSection '%s' has no data to dump.\n", 7171 s->name); 7172 continue; 7173 } 7174 found = 0; 7175 start = d->d_buf; 7176 sz = d->d_size; 7177 if (re->options & RE_Z) { 7178 if (decompress_section(s, d->d_buf, d->d_size, 7179 &new_buf, &sz)) 7180 start = new_buf; 7181 } 7182 buf_end = start + sz; 7183 printf("\nString dump of section '%s':\n", s->name); 7184 for (;;) { 7185 while (start < buf_end && !isprint(*start)) 7186 start++; 7187 if (start >= buf_end) 7188 break; 7189 end = start + 1; 7190 while (end < buf_end && isprint(*end)) 7191 end++; 7192 printf(" [%6lx] ", 7193 (long) (start - (unsigned char *) d->d_buf)); 7194 len = end - start; 7195 for (j = 0; (unsigned int) j < len; j++) 7196 putchar(start[j]); 7197 putchar('\n'); 7198 found = 1; 7199 if (end >= buf_end) 7200 break; 7201 start = end + 1; 7202 } 7203 free(new_buf); 7204 if (!found) 7205 printf(" No strings found in this section."); 7206 putchar('\n'); 7207 } 7208 } 7209 7210 static void 7211 load_sections(struct readelf *re) 7212 { 7213 struct section *s; 7214 const char *name; 7215 Elf_Scn *scn; 7216 GElf_Shdr sh; 7217 size_t shstrndx, ndx; 7218 int elferr; 7219 7220 /* Allocate storage for internal section list. */ 7221 if (!elf_getshnum(re->elf, &re->shnum)) { 7222 warnx("elf_getshnum failed: %s", elf_errmsg(-1)); 7223 return; 7224 } 7225 if (re->sl != NULL) 7226 free(re->sl); 7227 if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL) 7228 err(EXIT_FAILURE, "calloc failed"); 7229 7230 /* Get the index of .shstrtab section. */ 7231 if (!elf_getshstrndx(re->elf, &shstrndx)) { 7232 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1)); 7233 return; 7234 } 7235 7236 if ((scn = elf_getscn(re->elf, 0)) == NULL) 7237 return; 7238 7239 (void) elf_errno(); 7240 do { 7241 if (gelf_getshdr(scn, &sh) == NULL) { 7242 warnx("gelf_getshdr failed: %s", elf_errmsg(-1)); 7243 (void) elf_errno(); 7244 continue; 7245 } 7246 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) { 7247 (void) elf_errno(); 7248 name = "<no-name>"; 7249 } 7250 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) { 7251 if ((elferr = elf_errno()) != 0) { 7252 warnx("elf_ndxscn failed: %s", 7253 elf_errmsg(elferr)); 7254 continue; 7255 } 7256 } 7257 if (ndx >= re->shnum) { 7258 warnx("section index of '%s' out of range", name); 7259 continue; 7260 } 7261 if (sh.sh_link >= re->shnum) 7262 warnx("section link %llu of '%s' out of range", 7263 (unsigned long long)sh.sh_link, name); 7264 s = &re->sl[ndx]; 7265 s->name = name; 7266 s->scn = scn; 7267 s->off = sh.sh_offset; 7268 s->sz = sh.sh_size; 7269 s->entsize = sh.sh_entsize; 7270 s->align = sh.sh_addralign; 7271 s->type = sh.sh_type; 7272 s->flags = sh.sh_flags; 7273 s->addr = sh.sh_addr; 7274 s->link = sh.sh_link; 7275 s->info = sh.sh_info; 7276 } while ((scn = elf_nextscn(re->elf, scn)) != NULL); 7277 elferr = elf_errno(); 7278 if (elferr != 0) 7279 warnx("elf_nextscn failed: %s", elf_errmsg(elferr)); 7280 } 7281 7282 static void 7283 unload_sections(struct readelf *re) 7284 { 7285 7286 if (re->sl != NULL) { 7287 free(re->sl); 7288 re->sl = NULL; 7289 } 7290 re->shnum = 0; 7291 re->vd_s = NULL; 7292 re->vn_s = NULL; 7293 re->vs_s = NULL; 7294 re->vs = NULL; 7295 re->vs_sz = 0; 7296 if (re->ver != NULL) { 7297 free(re->ver); 7298 re->ver = NULL; 7299 re->ver_sz = 0; 7300 } 7301 } 7302 7303 static bool 7304 dump_elf(struct readelf *re) 7305 { 7306 7307 /* Fetch ELF header. No need to continue if it fails. */ 7308 if (gelf_getehdr(re->elf, &re->ehdr) == NULL) { 7309 warnx("gelf_getehdr failed: %s", elf_errmsg(-1)); 7310 return (false); 7311 } 7312 if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) { 7313 warnx("gelf_getclass failed: %s", elf_errmsg(-1)); 7314 return (false); 7315 } 7316 if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) { 7317 re->dw_read = _read_msb; 7318 re->dw_decode = _decode_msb; 7319 } else { 7320 re->dw_read = _read_lsb; 7321 re->dw_decode = _decode_lsb; 7322 } 7323 7324 if (re->options & ~RE_H) 7325 load_sections(re); 7326 if ((re->options & RE_VV) || (re->options & RE_S)) 7327 search_ver(re); 7328 if (re->options & RE_H) 7329 dump_ehdr(re); 7330 if (re->options & RE_L) 7331 dump_phdr(re); 7332 if (re->options & RE_SS) 7333 dump_shdr(re); 7334 if (re->options & RE_G) 7335 dump_section_groups(re); 7336 if (re->options & RE_D) 7337 dump_dynamic(re); 7338 if (re->options & RE_R) 7339 dump_reloc(re); 7340 if (re->options & RE_S) 7341 dump_symtabs(re); 7342 if (re->options & RE_N) 7343 dump_notes(re); 7344 if (re->options & RE_II) 7345 dump_hash(re); 7346 if (re->options & RE_X) 7347 hex_dump(re); 7348 if (re->options & RE_P) 7349 str_dump(re); 7350 if (re->options & RE_VV) 7351 dump_ver(re); 7352 if (re->options & RE_AA) 7353 dump_arch_specific_info(re); 7354 if (re->options & RE_W) 7355 dump_dwarf(re); 7356 if (re->options & ~RE_H) 7357 unload_sections(re); 7358 return (true); 7359 } 7360 7361 static void 7362 dump_dwarf(struct readelf *re) 7363 { 7364 Dwarf_Error de; 7365 int error; 7366 7367 if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) { 7368 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL) 7369 errx(EXIT_FAILURE, "dwarf_elf_init failed: %s", 7370 dwarf_errmsg(de)); 7371 return; 7372 } 7373 7374 if (re->dop & DW_A) 7375 dump_dwarf_abbrev(re); 7376 if (re->dop & DW_L) 7377 dump_dwarf_line(re); 7378 if (re->dop & DW_LL) 7379 dump_dwarf_line_decoded(re); 7380 if (re->dop & DW_I) { 7381 dump_dwarf_info(re, 0); 7382 dump_dwarf_info(re, 1); 7383 } 7384 if (re->dop & DW_P) 7385 dump_dwarf_pubnames(re); 7386 if (re->dop & DW_R) 7387 dump_dwarf_aranges(re); 7388 if (re->dop & DW_RR) 7389 dump_dwarf_ranges(re); 7390 if (re->dop & DW_M) 7391 dump_dwarf_macinfo(re); 7392 if (re->dop & DW_F) 7393 dump_dwarf_frame(re, 0); 7394 else if (re->dop & DW_FF) 7395 dump_dwarf_frame(re, 1); 7396 if (re->dop & DW_S) 7397 dump_dwarf_str(re); 7398 if (re->dop & DW_O) 7399 dump_dwarf_loclist(re); 7400 7401 dwarf_finish(re->dbg, &de); 7402 } 7403 7404 static bool 7405 dump_ar(struct readelf *re, int fd) 7406 { 7407 Elf_Arsym *arsym; 7408 Elf_Arhdr *arhdr; 7409 Elf_Cmd cmd; 7410 Elf *e; 7411 size_t sz; 7412 off_t off; 7413 int i; 7414 7415 re->ar = re->elf; 7416 7417 if (re->options & RE_C) { 7418 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) { 7419 warnx("elf_getarsym() failed: %s", elf_errmsg(-1)); 7420 goto process_members; 7421 } 7422 printf("Index of archive %s: (%ju entries)\n", re->filename, 7423 (uintmax_t) sz - 1); 7424 off = 0; 7425 for (i = 0; (size_t) i < sz; i++) { 7426 if (arsym[i].as_name == NULL) 7427 break; 7428 if (arsym[i].as_off != off) { 7429 off = arsym[i].as_off; 7430 if (elf_rand(re->ar, off) != off) { 7431 warnx("elf_rand() failed: %s", 7432 elf_errmsg(-1)); 7433 continue; 7434 } 7435 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) == 7436 NULL) { 7437 warnx("elf_begin() failed: %s", 7438 elf_errmsg(-1)); 7439 continue; 7440 } 7441 if ((arhdr = elf_getarhdr(e)) == NULL) { 7442 warnx("elf_getarhdr() failed: %s", 7443 elf_errmsg(-1)); 7444 elf_end(e); 7445 continue; 7446 } 7447 printf("Binary %s(%s) contains:\n", 7448 re->filename, arhdr->ar_name); 7449 elf_end(e); 7450 } 7451 printf("\t%s\n", arsym[i].as_name); 7452 } 7453 if (elf_rand(re->ar, SARMAG) != SARMAG) { 7454 warnx("elf_rand() failed: %s", elf_errmsg(-1)); 7455 return (false); 7456 } 7457 } 7458 7459 process_members: 7460 7461 if ((re->options & ~RE_C) == 0) 7462 return (true); 7463 7464 cmd = ELF_C_READ; 7465 while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) { 7466 if ((arhdr = elf_getarhdr(re->elf)) == NULL) { 7467 warnx("elf_getarhdr() failed: %s", elf_errmsg(-1)); 7468 goto next_member; 7469 } 7470 if (strcmp(arhdr->ar_name, "/") == 0 || 7471 strcmp(arhdr->ar_name, "//") == 0 || 7472 strcmp(arhdr->ar_name, "__.SYMDEF") == 0) 7473 goto next_member; 7474 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name); 7475 dump_elf(re); 7476 7477 next_member: 7478 cmd = elf_next(re->elf); 7479 elf_end(re->elf); 7480 } 7481 re->elf = re->ar; 7482 return (true); 7483 } 7484 7485 static bool 7486 dump_object(struct readelf *re, int fd) 7487 { 7488 bool rv = false; 7489 7490 if ((re->flags & DISPLAY_FILENAME) != 0) 7491 printf("\nFile: %s\n", re->filename); 7492 7493 if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { 7494 warnx("elf_begin() failed: %s", elf_errmsg(-1)); 7495 goto done; 7496 } 7497 7498 switch (elf_kind(re->elf)) { 7499 case ELF_K_NONE: 7500 warnx("Not an ELF file."); 7501 goto done; 7502 case ELF_K_ELF: 7503 rv = dump_elf(re); 7504 break; 7505 case ELF_K_AR: 7506 rv = dump_ar(re, fd); 7507 break; 7508 default: 7509 warnx("Internal: libelf returned unknown elf kind."); 7510 } 7511 7512 done: 7513 elf_end(re->elf); 7514 return (rv); 7515 } 7516 7517 static void 7518 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7519 { 7520 struct dumpop *d; 7521 7522 if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) { 7523 if ((d = calloc(1, sizeof(*d))) == NULL) 7524 err(EXIT_FAILURE, "calloc failed"); 7525 if (t == DUMP_BY_INDEX) 7526 d->u.si = si; 7527 else 7528 d->u.sn = sn; 7529 d->type = t; 7530 d->op = op; 7531 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list); 7532 } else 7533 d->op |= op; 7534 } 7535 7536 static struct dumpop * 7537 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t) 7538 { 7539 struct dumpop *d; 7540 7541 STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) { 7542 if ((op == -1 || op & d->op) && 7543 (t == -1 || (unsigned) t == d->type)) { 7544 if ((d->type == DUMP_BY_INDEX && d->u.si == si) || 7545 (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn))) 7546 return (d); 7547 } 7548 } 7549 7550 return (NULL); 7551 } 7552 7553 static struct { 7554 const char *ln; 7555 char sn; 7556 int value; 7557 } dwarf_op[] = { 7558 {"rawline", 'l', DW_L}, 7559 {"decodedline", 'L', DW_LL}, 7560 {"info", 'i', DW_I}, 7561 {"abbrev", 'a', DW_A}, 7562 {"pubnames", 'p', DW_P}, 7563 {"aranges", 'r', DW_R}, 7564 {"ranges", 'r', DW_R}, 7565 {"Ranges", 'R', DW_RR}, 7566 {"macro", 'm', DW_M}, 7567 {"frames", 'f', DW_F}, 7568 {"frames-interp", 'F', DW_FF}, 7569 {"str", 's', DW_S}, 7570 {"loc", 'o', DW_O}, 7571 {NULL, 0, 0} 7572 }; 7573 7574 static void 7575 parse_dwarf_op_short(struct readelf *re, const char *op) 7576 { 7577 int i; 7578 7579 if (op == NULL) { 7580 re->dop |= DW_DEFAULT_OPTIONS; 7581 return; 7582 } 7583 7584 for (; *op != '\0'; op++) { 7585 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7586 if (dwarf_op[i].sn == *op) { 7587 re->dop |= dwarf_op[i].value; 7588 break; 7589 } 7590 } 7591 } 7592 } 7593 7594 static void 7595 parse_dwarf_op_long(struct readelf *re, const char *op) 7596 { 7597 char *p, *token, *bp; 7598 int i; 7599 7600 if (op == NULL) { 7601 re->dop |= DW_DEFAULT_OPTIONS; 7602 return; 7603 } 7604 7605 if ((p = strdup(op)) == NULL) 7606 err(EXIT_FAILURE, "strdup failed"); 7607 bp = p; 7608 7609 while ((token = strsep(&p, ",")) != NULL) { 7610 for (i = 0; dwarf_op[i].ln != NULL; i++) { 7611 if (!strcmp(token, dwarf_op[i].ln)) { 7612 re->dop |= dwarf_op[i].value; 7613 break; 7614 } 7615 } 7616 } 7617 7618 free(bp); 7619 } 7620 7621 static uint64_t 7622 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7623 { 7624 uint64_t ret; 7625 uint8_t *src; 7626 7627 src = (uint8_t *) d->d_buf + *offsetp; 7628 7629 ret = 0; 7630 switch (bytes_to_read) { 7631 case 8: 7632 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7633 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7634 /* FALLTHROUGH */ 7635 case 4: 7636 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7637 /* FALLTHROUGH */ 7638 case 2: 7639 ret |= ((uint64_t) src[1]) << 8; 7640 /* FALLTHROUGH */ 7641 case 1: 7642 ret |= src[0]; 7643 break; 7644 default: 7645 return (0); 7646 } 7647 7648 *offsetp += bytes_to_read; 7649 7650 return (ret); 7651 } 7652 7653 static uint64_t 7654 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read) 7655 { 7656 uint64_t ret; 7657 uint8_t *src; 7658 7659 src = (uint8_t *) d->d_buf + *offsetp; 7660 7661 switch (bytes_to_read) { 7662 case 1: 7663 ret = src[0]; 7664 break; 7665 case 2: 7666 ret = src[1] | ((uint64_t) src[0]) << 8; 7667 break; 7668 case 4: 7669 ret = src[3] | ((uint64_t) src[2]) << 8; 7670 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7671 break; 7672 case 8: 7673 ret = src[7] | ((uint64_t) src[6]) << 8; 7674 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7675 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7676 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7677 break; 7678 default: 7679 return (0); 7680 } 7681 7682 *offsetp += bytes_to_read; 7683 7684 return (ret); 7685 } 7686 7687 static uint64_t 7688 _decode_lsb(uint8_t **data, int bytes_to_read) 7689 { 7690 uint64_t ret; 7691 uint8_t *src; 7692 7693 src = *data; 7694 7695 ret = 0; 7696 switch (bytes_to_read) { 7697 case 8: 7698 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40; 7699 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56; 7700 /* FALLTHROUGH */ 7701 case 4: 7702 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24; 7703 /* FALLTHROUGH */ 7704 case 2: 7705 ret |= ((uint64_t) src[1]) << 8; 7706 /* FALLTHROUGH */ 7707 case 1: 7708 ret |= src[0]; 7709 break; 7710 default: 7711 return (0); 7712 } 7713 7714 *data += bytes_to_read; 7715 7716 return (ret); 7717 } 7718 7719 static uint64_t 7720 _decode_msb(uint8_t **data, int bytes_to_read) 7721 { 7722 uint64_t ret; 7723 uint8_t *src; 7724 7725 src = *data; 7726 7727 ret = 0; 7728 switch (bytes_to_read) { 7729 case 1: 7730 ret = src[0]; 7731 break; 7732 case 2: 7733 ret = src[1] | ((uint64_t) src[0]) << 8; 7734 break; 7735 case 4: 7736 ret = src[3] | ((uint64_t) src[2]) << 8; 7737 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24; 7738 break; 7739 case 8: 7740 ret = src[7] | ((uint64_t) src[6]) << 8; 7741 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24; 7742 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40; 7743 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56; 7744 break; 7745 default: 7746 return (0); 7747 break; 7748 } 7749 7750 *data += bytes_to_read; 7751 7752 return (ret); 7753 } 7754 7755 static int64_t 7756 _decode_sleb128(uint8_t **dp, uint8_t *dpe) 7757 { 7758 int64_t ret = 0; 7759 uint8_t b = 0; 7760 int shift = 0; 7761 7762 uint8_t *src = *dp; 7763 7764 do { 7765 if (src >= dpe) 7766 break; 7767 b = *src++; 7768 ret |= ((b & 0x7f) << shift); 7769 shift += 7; 7770 } while ((b & 0x80) != 0); 7771 7772 if (shift < 32 && (b & 0x40) != 0) 7773 ret |= (-1 << shift); 7774 7775 *dp = src; 7776 7777 return (ret); 7778 } 7779 7780 static uint64_t 7781 _decode_uleb128(uint8_t **dp, uint8_t *dpe) 7782 { 7783 uint64_t ret = 0; 7784 uint8_t b; 7785 int shift = 0; 7786 7787 uint8_t *src = *dp; 7788 7789 do { 7790 if (src >= dpe) 7791 break; 7792 b = *src++; 7793 ret |= ((b & 0x7f) << shift); 7794 shift += 7; 7795 } while ((b & 0x80) != 0); 7796 7797 *dp = src; 7798 7799 return (ret); 7800 } 7801 7802 static void 7803 readelf_version(void) 7804 { 7805 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(), 7806 elftc_version()); 7807 exit(EXIT_SUCCESS); 7808 } 7809 7810 #define USAGE_MESSAGE "\ 7811 Usage: %s [options] file...\n\ 7812 Display information about ELF objects and ar(1) archives.\n\n\ 7813 Options:\n\ 7814 -a | --all Equivalent to specifying options '-dhIlrsASV'.\n\ 7815 -c | --archive-index Print the archive symbol table for archives.\n\ 7816 -d | --dynamic Print the contents of SHT_DYNAMIC sections.\n\ 7817 -e | --headers Print all headers in the object.\n\ 7818 -g | --section-groups Print the contents of the section groups.\n\ 7819 -h | --file-header Print the file header for the object.\n\ 7820 -l | --program-headers Print the PHDR table for the object.\n\ 7821 -n | --notes Print the contents of SHT_NOTE sections.\n\ 7822 -p INDEX | --string-dump=INDEX\n\ 7823 Print the contents of section at index INDEX.\n\ 7824 -r | --relocs Print relocation information.\n\ 7825 -s | --syms | --symbols Print symbol tables.\n\ 7826 -t | --section-details Print additional information about sections.\n\ 7827 -v | --version Print a version identifier and exit.\n\ 7828 -w[afilmoprsFLR] | --debug-dump={abbrev,aranges,decodedline,frames,\n\ 7829 frames-interp,info,loc,macro,pubnames,\n\ 7830 ranges,Ranges,rawline,str}\n\ 7831 Display DWARF information.\n\ 7832 -x INDEX | --hex-dump=INDEX\n\ 7833 Display contents of a section as hexadecimal.\n\ 7834 -z | --decompress Decompress the contents of a section before displaying it.\n\ 7835 -A | --arch-specific (accepted, but ignored)\n\ 7836 -D | --use-dynamic Print the symbol table specified by the DT_SYMTAB\n\ 7837 entry in the \".dynamic\" section.\n\ 7838 -H | --help Print a help message.\n\ 7839 -I | --histogram Print information on bucket list lengths for \n\ 7840 hash sections.\n\ 7841 -N | --full-section-name (accepted, but ignored)\n\ 7842 -S | --sections | --section-headers\n\ 7843 Print information about section headers.\n\ 7844 -V | --version-info Print symbol versoning information.\n\ 7845 -W | --wide Print information without wrapping long lines.\n" 7846 7847 7848 static void 7849 readelf_usage(int status) 7850 { 7851 fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME()); 7852 exit(status); 7853 } 7854 7855 int 7856 main(int argc, char **argv) 7857 { 7858 cap_rights_t rights; 7859 fileargs_t *fa; 7860 struct readelf *re, re_storage; 7861 unsigned long si; 7862 int fd, opt, i, exit_code; 7863 char *ep; 7864 7865 re = &re_storage; 7866 memset(re, 0, sizeof(*re)); 7867 STAILQ_INIT(&re->v_dumpop); 7868 7869 while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:z", 7870 longopts, NULL)) != -1) { 7871 switch(opt) { 7872 case '?': 7873 readelf_usage(EXIT_SUCCESS); 7874 break; 7875 case 'A': 7876 re->options |= RE_AA; 7877 break; 7878 case 'a': 7879 re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II | 7880 RE_L | RE_N | RE_R | RE_SS | RE_S | RE_U | RE_VV; 7881 break; 7882 case 'c': 7883 re->options |= RE_C; 7884 break; 7885 case 'D': 7886 re->options |= RE_DD; 7887 break; 7888 case 'd': 7889 re->options |= RE_D; 7890 break; 7891 case 'e': 7892 re->options |= RE_H | RE_L | RE_SS; 7893 break; 7894 case 'g': 7895 re->options |= RE_G; 7896 break; 7897 case 'H': 7898 readelf_usage(EXIT_SUCCESS); 7899 break; 7900 case 'h': 7901 re->options |= RE_H; 7902 break; 7903 case 'I': 7904 re->options |= RE_II; 7905 break; 7906 case 'i': 7907 /* Not implemented yet. */ 7908 break; 7909 case 'l': 7910 re->options |= RE_L; 7911 break; 7912 case 'N': 7913 re->options |= RE_NN; 7914 break; 7915 case 'n': 7916 re->options |= RE_N; 7917 break; 7918 case 'p': 7919 re->options |= RE_P; 7920 si = strtoul(optarg, &ep, 10); 7921 if (*ep == '\0') 7922 add_dumpop(re, (size_t) si, NULL, STR_DUMP, 7923 DUMP_BY_INDEX); 7924 else 7925 add_dumpop(re, 0, optarg, STR_DUMP, 7926 DUMP_BY_NAME); 7927 break; 7928 case 'r': 7929 re->options |= RE_R; 7930 break; 7931 case 'S': 7932 re->options |= RE_SS; 7933 break; 7934 case 's': 7935 re->options |= RE_S; 7936 break; 7937 case 't': 7938 re->options |= RE_SS | RE_T; 7939 break; 7940 case 'u': 7941 re->options |= RE_U; 7942 break; 7943 case 'V': 7944 re->options |= RE_VV; 7945 break; 7946 case 'v': 7947 readelf_version(); 7948 break; 7949 case 'W': 7950 re->options |= RE_WW; 7951 break; 7952 case 'w': 7953 re->options |= RE_W; 7954 parse_dwarf_op_short(re, optarg); 7955 break; 7956 case 'x': 7957 re->options |= RE_X; 7958 si = strtoul(optarg, &ep, 10); 7959 if (*ep == '\0') 7960 add_dumpop(re, (size_t) si, NULL, HEX_DUMP, 7961 DUMP_BY_INDEX); 7962 else 7963 add_dumpop(re, 0, optarg, HEX_DUMP, 7964 DUMP_BY_NAME); 7965 break; 7966 case 'z': 7967 re->options |= RE_Z; 7968 break; 7969 case OPTION_DEBUG_DUMP: 7970 re->options |= RE_W; 7971 parse_dwarf_op_long(re, optarg); 7972 } 7973 } 7974 7975 argv += optind; 7976 argc -= optind; 7977 7978 if (argc == 0 || re->options == 0) 7979 readelf_usage(EXIT_FAILURE); 7980 7981 if (argc > 1) 7982 re->flags |= DISPLAY_FILENAME; 7983 7984 if (elf_version(EV_CURRENT) == EV_NONE) 7985 errx(EXIT_FAILURE, "ELF library initialization failed: %s", 7986 elf_errmsg(-1)); 7987 7988 cap_rights_init(&rights, CAP_FCNTL, CAP_FSTAT, CAP_MMAP_R, CAP_SEEK); 7989 fa = fileargs_init(argc, argv, O_RDONLY, 0, &rights, FA_OPEN); 7990 if (fa == NULL) 7991 err(1, "Unable to initialize casper fileargs"); 7992 7993 caph_cache_catpages(); 7994 if (caph_limit_stdio() < 0) { 7995 fileargs_free(fa); 7996 err(1, "Unable to limit stdio rights"); 7997 } 7998 if (caph_enter_casper() < 0) { 7999 fileargs_free(fa); 8000 err(1, "Unable to enter capability mode"); 8001 } 8002 8003 exit_code = EXIT_SUCCESS; 8004 for (i = 0; i < argc; i++) { 8005 re->filename = argv[i]; 8006 fd = fileargs_open(fa, re->filename); 8007 if (fd < 0) { 8008 warn("open %s failed", re->filename); 8009 exit_code = EXIT_FAILURE; 8010 } else { 8011 if (!dump_object(re, fd)) 8012 exit_code = EXIT_FAILURE; 8013 close(fd); 8014 } 8015 } 8016 8017 exit(exit_code); 8018 } 8019