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