1 /*-
2 * Copyright (c) 2009-2015 Kai Wang
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/param.h>
28 #include <sys/queue.h>
29 #include <ar.h>
30 #include <assert.h>
31 #include <ctype.h>
32 #include <dwarf.h>
33 #include <err.h>
34 #include <fcntl.h>
35 #include <gelf.h>
36 #include <getopt.h>
37 #include <libdwarf.h>
38 #include <libelftc.h>
39 #include <libgen.h>
40 #include <stdarg.h>
41 #include <stdint.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <time.h>
46 #include <unistd.h>
47
48 #include "_elftc.h"
49
50 ELFTC_VCSID("$Id: readelf.c 3271 2015-12-11 18:53:08Z kaiwang27 $");
51
52 /*
53 * readelf(1) options.
54 */
55 #define RE_AA 0x00000001
56 #define RE_C 0x00000002
57 #define RE_DD 0x00000004
58 #define RE_D 0x00000008
59 #define RE_G 0x00000010
60 #define RE_H 0x00000020
61 #define RE_II 0x00000040
62 #define RE_I 0x00000080
63 #define RE_L 0x00000100
64 #define RE_NN 0x00000200
65 #define RE_N 0x00000400
66 #define RE_P 0x00000800
67 #define RE_R 0x00001000
68 #define RE_SS 0x00002000
69 #define RE_S 0x00004000
70 #define RE_T 0x00008000
71 #define RE_U 0x00010000
72 #define RE_VV 0x00020000
73 #define RE_WW 0x00040000
74 #define RE_W 0x00080000
75 #define RE_X 0x00100000
76
77 /*
78 * dwarf dump options.
79 */
80 #define DW_A 0x00000001
81 #define DW_FF 0x00000002
82 #define DW_F 0x00000004
83 #define DW_I 0x00000008
84 #define DW_LL 0x00000010
85 #define DW_L 0x00000020
86 #define DW_M 0x00000040
87 #define DW_O 0x00000080
88 #define DW_P 0x00000100
89 #define DW_RR 0x00000200
90 #define DW_R 0x00000400
91 #define DW_S 0x00000800
92
93 #define DW_DEFAULT_OPTIONS (DW_A | DW_F | DW_I | DW_L | DW_O | DW_P | \
94 DW_R | DW_RR | DW_S)
95
96 /*
97 * readelf(1) run control flags.
98 */
99 #define DISPLAY_FILENAME 0x0001
100
101 /*
102 * Internal data structure for sections.
103 */
104 struct section {
105 const char *name; /* section name */
106 Elf_Scn *scn; /* section scn */
107 uint64_t off; /* section offset */
108 uint64_t sz; /* section size */
109 uint64_t entsize; /* section entsize */
110 uint64_t align; /* section alignment */
111 uint64_t type; /* section type */
112 uint64_t flags; /* section flags */
113 uint64_t addr; /* section virtual addr */
114 uint32_t link; /* section link ndx */
115 uint32_t info; /* section info ndx */
116 };
117
118 struct dumpop {
119 union {
120 size_t si; /* section index */
121 const char *sn; /* section name */
122 } u;
123 enum {
124 DUMP_BY_INDEX = 0,
125 DUMP_BY_NAME
126 } type; /* dump type */
127 #define HEX_DUMP 0x0001
128 #define STR_DUMP 0x0002
129 int op; /* dump operation */
130 STAILQ_ENTRY(dumpop) dumpop_list;
131 };
132
133 struct symver {
134 const char *name;
135 int type;
136 };
137
138 /*
139 * Structure encapsulates the global data for readelf(1).
140 */
141 struct readelf {
142 const char *filename; /* current processing file. */
143 int options; /* command line options. */
144 int flags; /* run control flags. */
145 int dop; /* dwarf dump options. */
146 Elf *elf; /* underlying ELF descriptor. */
147 Elf *ar; /* archive ELF descriptor. */
148 Dwarf_Debug dbg; /* DWARF handle. */
149 Dwarf_Half cu_psize; /* DWARF CU pointer size. */
150 Dwarf_Half cu_osize; /* DWARF CU offset size. */
151 Dwarf_Half cu_ver; /* DWARF CU version. */
152 GElf_Ehdr ehdr; /* ELF header. */
153 int ec; /* ELF class. */
154 size_t shnum; /* #sections. */
155 struct section *vd_s; /* Verdef section. */
156 struct section *vn_s; /* Verneed section. */
157 struct section *vs_s; /* Versym section. */
158 uint16_t *vs; /* Versym array. */
159 int vs_sz; /* Versym array size. */
160 struct symver *ver; /* Version array. */
161 int ver_sz; /* Size of version array. */
162 struct section *sl; /* list of sections. */
163 STAILQ_HEAD(, dumpop) v_dumpop; /* list of dump ops. */
164 uint64_t (*dw_read)(Elf_Data *, uint64_t *, int);
165 uint64_t (*dw_decode)(uint8_t **, int);
166 };
167
168 enum options
169 {
170 OPTION_DEBUG_DUMP
171 };
172
173 static struct option longopts[] = {
174 {"all", no_argument, NULL, 'a'},
175 {"arch-specific", no_argument, NULL, 'A'},
176 {"archive-index", no_argument, NULL, 'c'},
177 {"debug-dump", optional_argument, NULL, OPTION_DEBUG_DUMP},
178 {"dynamic", no_argument, NULL, 'd'},
179 {"file-header", no_argument, NULL, 'h'},
180 {"full-section-name", no_argument, NULL, 'N'},
181 {"headers", no_argument, NULL, 'e'},
182 {"help", no_argument, 0, 'H'},
183 {"hex-dump", required_argument, NULL, 'x'},
184 {"histogram", no_argument, NULL, 'I'},
185 {"notes", no_argument, NULL, 'n'},
186 {"program-headers", no_argument, NULL, 'l'},
187 {"relocs", no_argument, NULL, 'r'},
188 {"sections", no_argument, NULL, 'S'},
189 {"section-headers", no_argument, NULL, 'S'},
190 {"section-groups", no_argument, NULL, 'g'},
191 {"section-details", no_argument, NULL, 't'},
192 {"segments", no_argument, NULL, 'l'},
193 {"string-dump", required_argument, NULL, 'p'},
194 {"symbols", no_argument, NULL, 's'},
195 {"syms", no_argument, NULL, 's'},
196 {"unwind", no_argument, NULL, 'u'},
197 {"use-dynamic", no_argument, NULL, 'D'},
198 {"version-info", no_argument, 0, 'V'},
199 {"version", no_argument, 0, 'v'},
200 {"wide", no_argument, 0, 'W'},
201 {NULL, 0, NULL, 0}
202 };
203
204 struct eflags_desc {
205 uint64_t flag;
206 const char *desc;
207 };
208
209 struct mips_option {
210 uint64_t flag;
211 const char *desc;
212 };
213
214 static void add_dumpop(struct readelf *re, size_t si, const char *sn, int op,
215 int t);
216 static const char *aeabi_adv_simd_arch(uint64_t simd);
217 static const char *aeabi_align_needed(uint64_t an);
218 static const char *aeabi_align_preserved(uint64_t ap);
219 static const char *aeabi_arm_isa(uint64_t ai);
220 static const char *aeabi_cpu_arch(uint64_t arch);
221 static const char *aeabi_cpu_arch_profile(uint64_t pf);
222 static const char *aeabi_div(uint64_t du);
223 static const char *aeabi_enum_size(uint64_t es);
224 static const char *aeabi_fp_16bit_format(uint64_t fp16);
225 static const char *aeabi_fp_arch(uint64_t fp);
226 static const char *aeabi_fp_denormal(uint64_t fd);
227 static const char *aeabi_fp_exceptions(uint64_t fe);
228 static const char *aeabi_fp_hpext(uint64_t fh);
229 static const char *aeabi_fp_number_model(uint64_t fn);
230 static const char *aeabi_fp_optm_goal(uint64_t fog);
231 static const char *aeabi_fp_rounding(uint64_t fr);
232 static const char *aeabi_hardfp(uint64_t hfp);
233 static const char *aeabi_mpext(uint64_t mp);
234 static const char *aeabi_optm_goal(uint64_t og);
235 static const char *aeabi_pcs_config(uint64_t pcs);
236 static const char *aeabi_pcs_got(uint64_t got);
237 static const char *aeabi_pcs_r9(uint64_t r9);
238 static const char *aeabi_pcs_ro(uint64_t ro);
239 static const char *aeabi_pcs_rw(uint64_t rw);
240 static const char *aeabi_pcs_wchar_t(uint64_t wt);
241 static const char *aeabi_t2ee(uint64_t t2ee);
242 static const char *aeabi_thumb_isa(uint64_t ti);
243 static const char *aeabi_fp_user_exceptions(uint64_t fu);
244 static const char *aeabi_unaligned_access(uint64_t ua);
245 static const char *aeabi_vfp_args(uint64_t va);
246 static const char *aeabi_virtual(uint64_t vt);
247 static const char *aeabi_wmmx_arch(uint64_t wmmx);
248 static const char *aeabi_wmmx_args(uint64_t wa);
249 static const char *elf_class(unsigned int class);
250 static const char *elf_endian(unsigned int endian);
251 static const char *elf_machine(unsigned int mach);
252 static const char *elf_osabi(unsigned int abi);
253 static const char *elf_type(unsigned int type);
254 static const char *elf_ver(unsigned int ver);
255 static const char *dt_type(unsigned int mach, unsigned int dtype);
256 static void dump_ar(struct readelf *re, int);
257 static void dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe);
258 static void dump_attributes(struct readelf *re);
259 static uint8_t *dump_compatibility_tag(uint8_t *p, uint8_t *pe);
260 static void dump_dwarf(struct readelf *re);
261 static void dump_dwarf_abbrev(struct readelf *re);
262 static void dump_dwarf_aranges(struct readelf *re);
263 static void dump_dwarf_block(struct readelf *re, uint8_t *b,
264 Dwarf_Unsigned len);
265 static void dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level);
266 static void dump_dwarf_frame(struct readelf *re, int alt);
267 static void dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie,
268 uint8_t *insts, Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf,
269 Dwarf_Addr pc, Dwarf_Debug dbg);
270 static int dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde,
271 Dwarf_Addr pc, Dwarf_Unsigned func_len, Dwarf_Half cie_ra);
272 static void dump_dwarf_frame_section(struct readelf *re, struct section *s,
273 int alt);
274 static void dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info);
275 static void dump_dwarf_macinfo(struct readelf *re);
276 static void dump_dwarf_line(struct readelf *re);
277 static void dump_dwarf_line_decoded(struct readelf *re);
278 static void dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr);
279 static void dump_dwarf_loclist(struct readelf *re);
280 static void dump_dwarf_pubnames(struct readelf *re);
281 static void dump_dwarf_ranges(struct readelf *re);
282 static void dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die,
283 Dwarf_Addr base);
284 static void dump_dwarf_str(struct readelf *re);
285 static void dump_eflags(struct readelf *re, uint64_t e_flags);
286 static void dump_elf(struct readelf *re);
287 static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab);
288 static void dump_dynamic(struct readelf *re);
289 static void dump_liblist(struct readelf *re);
290 static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe);
291 static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz);
292 static void dump_mips_options(struct readelf *re, struct section *s);
293 static void dump_mips_option_flags(const char *name, struct mips_option *opt,
294 uint64_t info);
295 static void dump_mips_reginfo(struct readelf *re, struct section *s);
296 static void dump_mips_specific_info(struct readelf *re);
297 static void dump_notes(struct readelf *re);
298 static void dump_notes_content(struct readelf *re, const char *buf, size_t sz,
299 off_t off);
300 static void dump_svr4_hash(struct section *s);
301 static void dump_svr4_hash64(struct readelf *re, struct section *s);
302 static void dump_gnu_hash(struct readelf *re, struct section *s);
303 static void dump_hash(struct readelf *re);
304 static void dump_phdr(struct readelf *re);
305 static void dump_ppc_attributes(uint8_t *p, uint8_t *pe);
306 static void dump_section_groups(struct readelf *re);
307 static void dump_symtab(struct readelf *re, int i);
308 static void dump_symtabs(struct readelf *re);
309 static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe);
310 static void dump_ver(struct readelf *re);
311 static void dump_verdef(struct readelf *re, int dump);
312 static void dump_verneed(struct readelf *re, int dump);
313 static void dump_versym(struct readelf *re);
314 static const char *dwarf_reg(unsigned int mach, unsigned int reg);
315 static const char *dwarf_regname(struct readelf *re, unsigned int num);
316 static struct dumpop *find_dumpop(struct readelf *re, size_t si,
317 const char *sn, int op, int t);
318 static int get_ent_count(struct section *s, int *ent_count);
319 static char *get_regoff_str(struct readelf *re, Dwarf_Half reg,
320 Dwarf_Addr off);
321 static const char *get_string(struct readelf *re, int strtab, size_t off);
322 static const char *get_symbol_name(struct readelf *re, int symtab, int i);
323 static uint64_t get_symbol_value(struct readelf *re, int symtab, int i);
324 static void load_sections(struct readelf *re);
325 static const char *mips_abi_fp(uint64_t fp);
326 static const char *note_type(const char *note_name, unsigned int et,
327 unsigned int nt);
328 static const char *note_type_freebsd(unsigned int nt);
329 static const char *note_type_freebsd_core(unsigned int nt);
330 static const char *note_type_linux_core(unsigned int nt);
331 static const char *note_type_gnu(unsigned int nt);
332 static const char *note_type_netbsd(unsigned int nt);
333 static const char *note_type_openbsd(unsigned int nt);
334 static const char *note_type_unknown(unsigned int nt);
335 static const char *note_type_xen(unsigned int nt);
336 static const char *option_kind(uint8_t kind);
337 static const char *phdr_type(unsigned int ptype);
338 static const char *ppc_abi_fp(uint64_t fp);
339 static const char *ppc_abi_vector(uint64_t vec);
340 static const char *r_type(unsigned int mach, unsigned int type);
341 static void readelf_usage(void);
342 static void readelf_version(void);
343 static void search_loclist_at(struct readelf *re, Dwarf_Die die,
344 Dwarf_Unsigned lowpc);
345 static void search_ver(struct readelf *re);
346 static const char *section_type(unsigned int mach, unsigned int stype);
347 static void set_cu_context(struct readelf *re, Dwarf_Half psize,
348 Dwarf_Half osize, Dwarf_Half ver);
349 static const char *st_bind(unsigned int sbind);
350 static const char *st_shndx(unsigned int shndx);
351 static const char *st_type(unsigned int stype);
352 static const char *st_vis(unsigned int svis);
353 static const char *top_tag(unsigned int tag);
354 static void unload_sections(struct readelf *re);
355 static uint64_t _read_lsb(Elf_Data *d, uint64_t *offsetp,
356 int bytes_to_read);
357 static uint64_t _read_msb(Elf_Data *d, uint64_t *offsetp,
358 int bytes_to_read);
359 static uint64_t _decode_lsb(uint8_t **data, int bytes_to_read);
360 static uint64_t _decode_msb(uint8_t **data, int bytes_to_read);
361 static int64_t _decode_sleb128(uint8_t **dp, uint8_t *dpe);
362 static uint64_t _decode_uleb128(uint8_t **dp, uint8_t *dpe);
363
364 static struct eflags_desc arm_eflags_desc[] = {
365 {EF_ARM_RELEXEC, "relocatable executable"},
366 {EF_ARM_HASENTRY, "has entry point"},
367 {EF_ARM_SYMSARESORTED, "sorted symbol tables"},
368 {EF_ARM_DYNSYMSUSESEGIDX, "dynamic symbols use segment index"},
369 {EF_ARM_MAPSYMSFIRST, "mapping symbols precede others"},
370 {EF_ARM_BE8, "BE8"},
371 {EF_ARM_LE8, "LE8"},
372 {EF_ARM_INTERWORK, "interworking enabled"},
373 {EF_ARM_APCS_26, "uses APCS/26"},
374 {EF_ARM_APCS_FLOAT, "uses APCS/float"},
375 {EF_ARM_PIC, "position independent"},
376 {EF_ARM_ALIGN8, "8 bit structure alignment"},
377 {EF_ARM_NEW_ABI, "uses new ABI"},
378 {EF_ARM_OLD_ABI, "uses old ABI"},
379 {EF_ARM_SOFT_FLOAT, "software FP"},
380 {EF_ARM_VFP_FLOAT, "VFP"},
381 {EF_ARM_MAVERICK_FLOAT, "Maverick FP"},
382 {0, NULL}
383 };
384
385 static struct eflags_desc mips_eflags_desc[] = {
386 {EF_MIPS_NOREORDER, "noreorder"},
387 {EF_MIPS_PIC, "pic"},
388 {EF_MIPS_CPIC, "cpic"},
389 {EF_MIPS_UCODE, "ugen_reserved"},
390 {EF_MIPS_ABI2, "abi2"},
391 {EF_MIPS_OPTIONS_FIRST, "odk first"},
392 {EF_MIPS_ARCH_ASE_MDMX, "mdmx"},
393 {EF_MIPS_ARCH_ASE_M16, "mips16"},
394 {0, NULL}
395 };
396
397 static struct eflags_desc powerpc_eflags_desc[] = {
398 {EF_PPC_EMB, "emb"},
399 {EF_PPC_RELOCATABLE, "relocatable"},
400 {EF_PPC_RELOCATABLE_LIB, "relocatable-lib"},
401 {0, NULL}
402 };
403
404 static struct eflags_desc sparc_eflags_desc[] = {
405 {EF_SPARC_32PLUS, "v8+"},
406 {EF_SPARC_SUN_US1, "ultrasparcI"},
407 {EF_SPARC_HAL_R1, "halr1"},
408 {EF_SPARC_SUN_US3, "ultrasparcIII"},
409 {0, NULL}
410 };
411
412 static const char *
elf_osabi(unsigned int abi)413 elf_osabi(unsigned int abi)
414 {
415 static char s_abi[32];
416
417 switch(abi) {
418 case ELFOSABI_NONE: return "NONE";
419 case ELFOSABI_HPUX: return "HPUX";
420 case ELFOSABI_NETBSD: return "NetBSD";
421 case ELFOSABI_GNU: return "GNU";
422 case ELFOSABI_HURD: return "HURD";
423 case ELFOSABI_86OPEN: return "86OPEN";
424 case ELFOSABI_SOLARIS: return "Solaris";
425 case ELFOSABI_AIX: return "AIX";
426 case ELFOSABI_IRIX: return "IRIX";
427 case ELFOSABI_FREEBSD: return "FreeBSD";
428 case ELFOSABI_TRU64: return "TRU64";
429 case ELFOSABI_MODESTO: return "MODESTO";
430 case ELFOSABI_OPENBSD: return "OpenBSD";
431 case ELFOSABI_OPENVMS: return "OpenVMS";
432 case ELFOSABI_NSK: return "NSK";
433 case ELFOSABI_ARM: return "ARM";
434 case ELFOSABI_STANDALONE: return "StandAlone";
435 default:
436 snprintf(s_abi, sizeof(s_abi), "<unknown: %#x>", abi);
437 return (s_abi);
438 }
439 };
440
441 static const char *
elf_machine(unsigned int mach)442 elf_machine(unsigned int mach)
443 {
444 static char s_mach[32];
445
446 switch (mach) {
447 case EM_NONE: return "Unknown machine";
448 case EM_M32: return "AT&T WE32100";
449 case EM_SPARC: return "Sun SPARC";
450 case EM_386: return "Intel i386";
451 case EM_68K: return "Motorola 68000";
452 case EM_IAMCU: return "Intel MCU";
453 case EM_88K: return "Motorola 88000";
454 case EM_860: return "Intel i860";
455 case EM_MIPS: return "MIPS R3000 Big-Endian only";
456 case EM_S370: return "IBM System/370";
457 case EM_MIPS_RS3_LE: return "MIPS R3000 Little-Endian";
458 case EM_PARISC: return "HP PA-RISC";
459 case EM_VPP500: return "Fujitsu VPP500";
460 case EM_SPARC32PLUS: return "SPARC v8plus";
461 case EM_960: return "Intel 80960";
462 case EM_PPC: return "PowerPC 32-bit";
463 case EM_PPC64: return "PowerPC 64-bit";
464 case EM_S390: return "IBM System/390";
465 case EM_V800: return "NEC V800";
466 case EM_FR20: return "Fujitsu FR20";
467 case EM_RH32: return "TRW RH-32";
468 case EM_RCE: return "Motorola RCE";
469 case EM_ARM: return "ARM";
470 case EM_SH: return "Hitachi SH";
471 case EM_SPARCV9: return "SPARC v9 64-bit";
472 case EM_TRICORE: return "Siemens TriCore embedded processor";
473 case EM_ARC: return "Argonaut RISC Core";
474 case EM_H8_300: return "Hitachi H8/300";
475 case EM_H8_300H: return "Hitachi H8/300H";
476 case EM_H8S: return "Hitachi H8S";
477 case EM_H8_500: return "Hitachi H8/500";
478 case EM_IA_64: return "Intel IA-64 Processor";
479 case EM_MIPS_X: return "Stanford MIPS-X";
480 case EM_COLDFIRE: return "Motorola ColdFire";
481 case EM_68HC12: return "Motorola M68HC12";
482 case EM_MMA: return "Fujitsu MMA";
483 case EM_PCP: return "Siemens PCP";
484 case EM_NCPU: return "Sony nCPU";
485 case EM_NDR1: return "Denso NDR1 microprocessor";
486 case EM_STARCORE: return "Motorola Star*Core processor";
487 case EM_ME16: return "Toyota ME16 processor";
488 case EM_ST100: return "STMicroelectronics ST100 processor";
489 case EM_TINYJ: return "Advanced Logic Corp. TinyJ processor";
490 case EM_X86_64: return "Advanced Micro Devices x86-64";
491 case EM_PDSP: return "Sony DSP Processor";
492 case EM_FX66: return "Siemens FX66 microcontroller";
493 case EM_ST9PLUS: return "STMicroelectronics ST9+ 8/16 microcontroller";
494 case EM_ST7: return "STmicroelectronics ST7 8-bit microcontroller";
495 case EM_68HC16: return "Motorola MC68HC16 microcontroller";
496 case EM_68HC11: return "Motorola MC68HC11 microcontroller";
497 case EM_68HC08: return "Motorola MC68HC08 microcontroller";
498 case EM_68HC05: return "Motorola MC68HC05 microcontroller";
499 case EM_SVX: return "Silicon Graphics SVx";
500 case EM_ST19: return "STMicroelectronics ST19 8-bit mc";
501 case EM_VAX: return "Digital VAX";
502 case EM_CRIS: return "Axis Communications 32-bit embedded processor";
503 case EM_JAVELIN: return "Infineon Tech. 32bit embedded processor";
504 case EM_FIREPATH: return "Element 14 64-bit DSP Processor";
505 case EM_ZSP: return "LSI Logic 16-bit DSP Processor";
506 case EM_MMIX: return "Donald Knuth's educational 64-bit proc";
507 case EM_HUANY: return "Harvard University MI object files";
508 case EM_PRISM: return "SiTera Prism";
509 case EM_AVR: return "Atmel AVR 8-bit microcontroller";
510 case EM_FR30: return "Fujitsu FR30";
511 case EM_D10V: return "Mitsubishi D10V";
512 case EM_D30V: return "Mitsubishi D30V";
513 case EM_V850: return "NEC v850";
514 case EM_M32R: return "Mitsubishi M32R";
515 case EM_MN10300: return "Matsushita MN10300";
516 case EM_MN10200: return "Matsushita MN10200";
517 case EM_PJ: return "picoJava";
518 case EM_OPENRISC: return "OpenRISC 32-bit embedded processor";
519 case EM_ARC_A5: return "ARC Cores Tangent-A5";
520 case EM_XTENSA: return "Tensilica Xtensa Architecture";
521 case EM_VIDEOCORE: return "Alphamosaic VideoCore processor";
522 case EM_TMM_GPP: return "Thompson Multimedia General Purpose Processor";
523 case EM_NS32K: return "National Semiconductor 32000 series";
524 case EM_TPC: return "Tenor Network TPC processor";
525 case EM_SNP1K: return "Trebia SNP 1000 processor";
526 case EM_ST200: return "STMicroelectronics ST200 microcontroller";
527 case EM_IP2K: return "Ubicom IP2xxx microcontroller family";
528 case EM_MAX: return "MAX Processor";
529 case EM_CR: return "National Semiconductor CompactRISC microprocessor";
530 case EM_F2MC16: return "Fujitsu F2MC16";
531 case EM_MSP430: return "TI embedded microcontroller msp430";
532 case EM_BLACKFIN: return "Analog Devices Blackfin (DSP) processor";
533 case EM_SE_C33: return "S1C33 Family of Seiko Epson processors";
534 case EM_SEP: return "Sharp embedded microprocessor";
535 case EM_ARCA: return "Arca RISC Microprocessor";
536 case EM_UNICORE: return "Microprocessor series from PKU-Unity Ltd";
537 case EM_AARCH64: return "AArch64";
538 case EM_RISCV: return "RISC-V";
539 default:
540 snprintf(s_mach, sizeof(s_mach), "<unknown: %#x>", mach);
541 return (s_mach);
542 }
543
544 }
545
546 static const char *
elf_class(unsigned int class)547 elf_class(unsigned int class)
548 {
549 static char s_class[32];
550
551 switch (class) {
552 case ELFCLASSNONE: return "none";
553 case ELFCLASS32: return "ELF32";
554 case ELFCLASS64: return "ELF64";
555 default:
556 snprintf(s_class, sizeof(s_class), "<unknown: %#x>", class);
557 return (s_class);
558 }
559 }
560
561 static const char *
elf_endian(unsigned int endian)562 elf_endian(unsigned int endian)
563 {
564 static char s_endian[32];
565
566 switch (endian) {
567 case ELFDATANONE: return "none";
568 case ELFDATA2LSB: return "2's complement, little endian";
569 case ELFDATA2MSB: return "2's complement, big endian";
570 default:
571 snprintf(s_endian, sizeof(s_endian), "<unknown: %#x>", endian);
572 return (s_endian);
573 }
574 }
575
576 static const char *
elf_type(unsigned int type)577 elf_type(unsigned int type)
578 {
579 static char s_type[32];
580
581 switch (type) {
582 case ET_NONE: return "NONE (None)";
583 case ET_REL: return "REL (Relocatable file)";
584 case ET_EXEC: return "EXEC (Executable file)";
585 case ET_DYN: return "DYN (Shared object file)";
586 case ET_CORE: return "CORE (Core file)";
587 default:
588 if (type >= ET_LOPROC)
589 snprintf(s_type, sizeof(s_type), "<proc: %#x>", type);
590 else if (type >= ET_LOOS && type <= ET_HIOS)
591 snprintf(s_type, sizeof(s_type), "<os: %#x>", type);
592 else
593 snprintf(s_type, sizeof(s_type), "<unknown: %#x>",
594 type);
595 return (s_type);
596 }
597 }
598
599 static const char *
elf_ver(unsigned int ver)600 elf_ver(unsigned int ver)
601 {
602 static char s_ver[32];
603
604 switch (ver) {
605 case EV_CURRENT: return "(current)";
606 case EV_NONE: return "(none)";
607 default:
608 snprintf(s_ver, sizeof(s_ver), "<unknown: %#x>",
609 ver);
610 return (s_ver);
611 }
612 }
613
614 static const char *
phdr_type(unsigned int ptype)615 phdr_type(unsigned int ptype)
616 {
617 static char s_ptype[32];
618
619 switch (ptype) {
620 case PT_NULL: return "NULL";
621 case PT_LOAD: return "LOAD";
622 case PT_DYNAMIC: return "DYNAMIC";
623 case PT_INTERP: return "INTERP";
624 case PT_NOTE: return "NOTE";
625 case PT_SHLIB: return "SHLIB";
626 case PT_PHDR: return "PHDR";
627 case PT_TLS: return "TLS";
628 case PT_GNU_EH_FRAME: return "GNU_EH_FRAME";
629 case PT_GNU_STACK: return "GNU_STACK";
630 case PT_GNU_RELRO: return "GNU_RELRO";
631 default:
632 if (ptype >= PT_LOPROC && ptype <= PT_HIPROC)
633 snprintf(s_ptype, sizeof(s_ptype), "LOPROC+%#x",
634 ptype - PT_LOPROC);
635 else if (ptype >= PT_LOOS && ptype <= PT_HIOS)
636 snprintf(s_ptype, sizeof(s_ptype), "LOOS+%#x",
637 ptype - PT_LOOS);
638 else
639 snprintf(s_ptype, sizeof(s_ptype), "<unknown: %#x>",
640 ptype);
641 return (s_ptype);
642 }
643 }
644
645 static const char *
section_type(unsigned int mach,unsigned int stype)646 section_type(unsigned int mach, unsigned int stype)
647 {
648 static char s_stype[32];
649
650 if (stype >= SHT_LOPROC && stype <= SHT_HIPROC) {
651 switch (mach) {
652 case EM_X86_64:
653 switch (stype) {
654 case SHT_AMD64_UNWIND: return "AMD64_UNWIND";
655 default:
656 break;
657 }
658 break;
659 case EM_MIPS:
660 case EM_MIPS_RS3_LE:
661 switch (stype) {
662 case SHT_MIPS_LIBLIST: return "MIPS_LIBLIST";
663 case SHT_MIPS_MSYM: return "MIPS_MSYM";
664 case SHT_MIPS_CONFLICT: return "MIPS_CONFLICT";
665 case SHT_MIPS_GPTAB: return "MIPS_GPTAB";
666 case SHT_MIPS_UCODE: return "MIPS_UCODE";
667 case SHT_MIPS_DEBUG: return "MIPS_DEBUG";
668 case SHT_MIPS_REGINFO: return "MIPS_REGINFO";
669 case SHT_MIPS_PACKAGE: return "MIPS_PACKAGE";
670 case SHT_MIPS_PACKSYM: return "MIPS_PACKSYM";
671 case SHT_MIPS_RELD: return "MIPS_RELD";
672 case SHT_MIPS_IFACE: return "MIPS_IFACE";
673 case SHT_MIPS_CONTENT: return "MIPS_CONTENT";
674 case SHT_MIPS_OPTIONS: return "MIPS_OPTIONS";
675 case SHT_MIPS_DELTASYM: return "MIPS_DELTASYM";
676 case SHT_MIPS_DELTAINST: return "MIPS_DELTAINST";
677 case SHT_MIPS_DELTACLASS: return "MIPS_DELTACLASS";
678 case SHT_MIPS_DWARF: return "MIPS_DWARF";
679 case SHT_MIPS_DELTADECL: return "MIPS_DELTADECL";
680 case SHT_MIPS_SYMBOL_LIB: return "MIPS_SYMBOL_LIB";
681 case SHT_MIPS_EVENTS: return "MIPS_EVENTS";
682 case SHT_MIPS_TRANSLATE: return "MIPS_TRANSLATE";
683 case SHT_MIPS_PIXIE: return "MIPS_PIXIE";
684 case SHT_MIPS_XLATE: return "MIPS_XLATE";
685 case SHT_MIPS_XLATE_DEBUG: return "MIPS_XLATE_DEBUG";
686 case SHT_MIPS_WHIRL: return "MIPS_WHIRL";
687 case SHT_MIPS_EH_REGION: return "MIPS_EH_REGION";
688 case SHT_MIPS_XLATE_OLD: return "MIPS_XLATE_OLD";
689 case SHT_MIPS_PDR_EXCEPTION: return "MIPS_PDR_EXCEPTION";
690 default:
691 break;
692 }
693 break;
694 default:
695 break;
696 }
697
698 snprintf(s_stype, sizeof(s_stype), "LOPROC+%#x",
699 stype - SHT_LOPROC);
700 return (s_stype);
701 }
702
703 switch (stype) {
704 case SHT_NULL: return "NULL";
705 case SHT_PROGBITS: return "PROGBITS";
706 case SHT_SYMTAB: return "SYMTAB";
707 case SHT_STRTAB: return "STRTAB";
708 case SHT_RELA: return "RELA";
709 case SHT_HASH: return "HASH";
710 case SHT_DYNAMIC: return "DYNAMIC";
711 case SHT_NOTE: return "NOTE";
712 case SHT_NOBITS: return "NOBITS";
713 case SHT_REL: return "REL";
714 case SHT_SHLIB: return "SHLIB";
715 case SHT_DYNSYM: return "DYNSYM";
716 case SHT_INIT_ARRAY: return "INIT_ARRAY";
717 case SHT_FINI_ARRAY: return "FINI_ARRAY";
718 case SHT_PREINIT_ARRAY: return "PREINIT_ARRAY";
719 case SHT_GROUP: return "GROUP";
720 case SHT_SYMTAB_SHNDX: return "SYMTAB_SHNDX";
721 case SHT_SUNW_dof: return "SUNW_dof";
722 case SHT_SUNW_cap: return "SUNW_cap";
723 case SHT_GNU_HASH: return "GNU_HASH";
724 case SHT_SUNW_ANNOTATE: return "SUNW_ANNOTATE";
725 case SHT_SUNW_DEBUGSTR: return "SUNW_DEBUGSTR";
726 case SHT_SUNW_DEBUG: return "SUNW_DEBUG";
727 case SHT_SUNW_move: return "SUNW_move";
728 case SHT_SUNW_COMDAT: return "SUNW_COMDAT";
729 case SHT_SUNW_syminfo: return "SUNW_syminfo";
730 case SHT_SUNW_verdef: return "SUNW_verdef";
731 case SHT_SUNW_verneed: return "SUNW_verneed";
732 case SHT_SUNW_versym: return "SUNW_versym";
733 default:
734 if (stype >= SHT_LOOS && stype <= SHT_HIOS)
735 snprintf(s_stype, sizeof(s_stype), "LOOS+%#x",
736 stype - SHT_LOOS);
737 else if (stype >= SHT_LOUSER)
738 snprintf(s_stype, sizeof(s_stype), "LOUSER+%#x",
739 stype - SHT_LOUSER);
740 else
741 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>",
742 stype);
743 return (s_stype);
744 }
745 }
746
747 static const char *
dt_type(unsigned int mach,unsigned int dtype)748 dt_type(unsigned int mach, unsigned int dtype)
749 {
750 static char s_dtype[32];
751
752 if (dtype >= DT_LOPROC && dtype <= DT_HIPROC) {
753 switch (mach) {
754 case EM_ARM:
755 switch (dtype) {
756 case DT_ARM_SYMTABSZ:
757 return "ARM_SYMTABSZ";
758 default:
759 break;
760 }
761 break;
762 case EM_MIPS:
763 case EM_MIPS_RS3_LE:
764 switch (dtype) {
765 case DT_MIPS_RLD_VERSION:
766 return "MIPS_RLD_VERSION";
767 case DT_MIPS_TIME_STAMP:
768 return "MIPS_TIME_STAMP";
769 case DT_MIPS_ICHECKSUM:
770 return "MIPS_ICHECKSUM";
771 case DT_MIPS_IVERSION:
772 return "MIPS_IVERSION";
773 case DT_MIPS_FLAGS:
774 return "MIPS_FLAGS";
775 case DT_MIPS_BASE_ADDRESS:
776 return "MIPS_BASE_ADDRESS";
777 case DT_MIPS_CONFLICT:
778 return "MIPS_CONFLICT";
779 case DT_MIPS_LIBLIST:
780 return "MIPS_LIBLIST";
781 case DT_MIPS_LOCAL_GOTNO:
782 return "MIPS_LOCAL_GOTNO";
783 case DT_MIPS_CONFLICTNO:
784 return "MIPS_CONFLICTNO";
785 case DT_MIPS_LIBLISTNO:
786 return "MIPS_LIBLISTNO";
787 case DT_MIPS_SYMTABNO:
788 return "MIPS_SYMTABNO";
789 case DT_MIPS_UNREFEXTNO:
790 return "MIPS_UNREFEXTNO";
791 case DT_MIPS_GOTSYM:
792 return "MIPS_GOTSYM";
793 case DT_MIPS_HIPAGENO:
794 return "MIPS_HIPAGENO";
795 case DT_MIPS_RLD_MAP:
796 return "MIPS_RLD_MAP";
797 case DT_MIPS_DELTA_CLASS:
798 return "MIPS_DELTA_CLASS";
799 case DT_MIPS_DELTA_CLASS_NO:
800 return "MIPS_DELTA_CLASS_NO";
801 case DT_MIPS_DELTA_INSTANCE:
802 return "MIPS_DELTA_INSTANCE";
803 case DT_MIPS_DELTA_INSTANCE_NO:
804 return "MIPS_DELTA_INSTANCE_NO";
805 case DT_MIPS_DELTA_RELOC:
806 return "MIPS_DELTA_RELOC";
807 case DT_MIPS_DELTA_RELOC_NO:
808 return "MIPS_DELTA_RELOC_NO";
809 case DT_MIPS_DELTA_SYM:
810 return "MIPS_DELTA_SYM";
811 case DT_MIPS_DELTA_SYM_NO:
812 return "MIPS_DELTA_SYM_NO";
813 case DT_MIPS_DELTA_CLASSSYM:
814 return "MIPS_DELTA_CLASSSYM";
815 case DT_MIPS_DELTA_CLASSSYM_NO:
816 return "MIPS_DELTA_CLASSSYM_NO";
817 case DT_MIPS_CXX_FLAGS:
818 return "MIPS_CXX_FLAGS";
819 case DT_MIPS_PIXIE_INIT:
820 return "MIPS_PIXIE_INIT";
821 case DT_MIPS_SYMBOL_LIB:
822 return "MIPS_SYMBOL_LIB";
823 case DT_MIPS_LOCALPAGE_GOTIDX:
824 return "MIPS_LOCALPAGE_GOTIDX";
825 case DT_MIPS_LOCAL_GOTIDX:
826 return "MIPS_LOCAL_GOTIDX";
827 case DT_MIPS_HIDDEN_GOTIDX:
828 return "MIPS_HIDDEN_GOTIDX";
829 case DT_MIPS_PROTECTED_GOTIDX:
830 return "MIPS_PROTECTED_GOTIDX";
831 case DT_MIPS_OPTIONS:
832 return "MIPS_OPTIONS";
833 case DT_MIPS_INTERFACE:
834 return "MIPS_INTERFACE";
835 case DT_MIPS_DYNSTR_ALIGN:
836 return "MIPS_DYNSTR_ALIGN";
837 case DT_MIPS_INTERFACE_SIZE:
838 return "MIPS_INTERFACE_SIZE";
839 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR:
840 return "MIPS_RLD_TEXT_RESOLVE_ADDR";
841 case DT_MIPS_PERF_SUFFIX:
842 return "MIPS_PERF_SUFFIX";
843 case DT_MIPS_COMPACT_SIZE:
844 return "MIPS_COMPACT_SIZE";
845 case DT_MIPS_GP_VALUE:
846 return "MIPS_GP_VALUE";
847 case DT_MIPS_AUX_DYNAMIC:
848 return "MIPS_AUX_DYNAMIC";
849 case DT_MIPS_PLTGOT:
850 return "MIPS_PLTGOT";
851 case DT_MIPS_RLD_OBJ_UPDATE:
852 return "MIPS_RLD_OBJ_UPDATE";
853 case DT_MIPS_RWPLT:
854 return "MIPS_RWPLT";
855 default:
856 break;
857 }
858 break;
859 case EM_SPARC:
860 case EM_SPARC32PLUS:
861 case EM_SPARCV9:
862 switch (dtype) {
863 case DT_SPARC_REGISTER:
864 return "DT_SPARC_REGISTER";
865 default:
866 break;
867 }
868 break;
869 default:
870 break;
871 }
872 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype);
873 return (s_dtype);
874 }
875
876 switch (dtype) {
877 case DT_NULL: return "NULL";
878 case DT_NEEDED: return "NEEDED";
879 case DT_PLTRELSZ: return "PLTRELSZ";
880 case DT_PLTGOT: return "PLTGOT";
881 case DT_HASH: return "HASH";
882 case DT_STRTAB: return "STRTAB";
883 case DT_SYMTAB: return "SYMTAB";
884 case DT_RELA: return "RELA";
885 case DT_RELASZ: return "RELASZ";
886 case DT_RELAENT: return "RELAENT";
887 case DT_STRSZ: return "STRSZ";
888 case DT_SYMENT: return "SYMENT";
889 case DT_INIT: return "INIT";
890 case DT_FINI: return "FINI";
891 case DT_SONAME: return "SONAME";
892 case DT_RPATH: return "RPATH";
893 case DT_SYMBOLIC: return "SYMBOLIC";
894 case DT_REL: return "REL";
895 case DT_RELSZ: return "RELSZ";
896 case DT_RELENT: return "RELENT";
897 case DT_PLTREL: return "PLTREL";
898 case DT_DEBUG: return "DEBUG";
899 case DT_TEXTREL: return "TEXTREL";
900 case DT_JMPREL: return "JMPREL";
901 case DT_BIND_NOW: return "BIND_NOW";
902 case DT_INIT_ARRAY: return "INIT_ARRAY";
903 case DT_FINI_ARRAY: return "FINI_ARRAY";
904 case DT_INIT_ARRAYSZ: return "INIT_ARRAYSZ";
905 case DT_FINI_ARRAYSZ: return "FINI_ARRAYSZ";
906 case DT_RUNPATH: return "RUNPATH";
907 case DT_FLAGS: return "FLAGS";
908 case DT_PREINIT_ARRAY: return "PREINIT_ARRAY";
909 case DT_PREINIT_ARRAYSZ: return "PREINIT_ARRAYSZ";
910 case DT_MAXPOSTAGS: return "MAXPOSTAGS";
911 case DT_SUNW_AUXILIARY: return "SUNW_AUXILIARY";
912 case DT_SUNW_RTLDINF: return "SUNW_RTLDINF";
913 case DT_SUNW_FILTER: return "SUNW_FILTER";
914 case DT_SUNW_CAP: return "SUNW_CAP";
915 case DT_CHECKSUM: return "CHECKSUM";
916 case DT_PLTPADSZ: return "PLTPADSZ";
917 case DT_MOVEENT: return "MOVEENT";
918 case DT_MOVESZ: return "MOVESZ";
919 case DT_FEATURE: return "FEATURE";
920 case DT_POSFLAG_1: return "POSFLAG_1";
921 case DT_SYMINSZ: return "SYMINSZ";
922 case DT_SYMINENT: return "SYMINENT";
923 case DT_GNU_HASH: return "GNU_HASH";
924 case DT_GNU_CONFLICT: return "GNU_CONFLICT";
925 case DT_GNU_LIBLIST: return "GNU_LIBLIST";
926 case DT_CONFIG: return "CONFIG";
927 case DT_DEPAUDIT: return "DEPAUDIT";
928 case DT_AUDIT: return "AUDIT";
929 case DT_PLTPAD: return "PLTPAD";
930 case DT_MOVETAB: return "MOVETAB";
931 case DT_SYMINFO: return "SYMINFO";
932 case DT_VERSYM: return "VERSYM";
933 case DT_RELACOUNT: return "RELACOUNT";
934 case DT_RELCOUNT: return "RELCOUNT";
935 case DT_FLAGS_1: return "FLAGS_1";
936 case DT_VERDEF: return "VERDEF";
937 case DT_VERDEFNUM: return "VERDEFNUM";
938 case DT_VERNEED: return "VERNEED";
939 case DT_VERNEEDNUM: return "VERNEEDNUM";
940 case DT_AUXILIARY: return "AUXILIARY";
941 case DT_USED: return "USED";
942 case DT_FILTER: return "FILTER";
943 case DT_GNU_PRELINKED: return "GNU_PRELINKED";
944 case DT_GNU_CONFLICTSZ: return "GNU_CONFLICTSZ";
945 case DT_GNU_LIBLISTSZ: return "GNU_LIBLISTSZ";
946 default:
947 snprintf(s_dtype, sizeof(s_dtype), "<unknown: %#x>", dtype);
948 return (s_dtype);
949 }
950 }
951
952 static const char *
st_bind(unsigned int sbind)953 st_bind(unsigned int sbind)
954 {
955 static char s_sbind[32];
956
957 switch (sbind) {
958 case STB_LOCAL: return "LOCAL";
959 case STB_GLOBAL: return "GLOBAL";
960 case STB_WEAK: return "WEAK";
961 default:
962 if (sbind >= STB_LOOS && sbind <= STB_HIOS)
963 return "OS";
964 else if (sbind >= STB_LOPROC && sbind <= STB_HIPROC)
965 return "PROC";
966 else
967 snprintf(s_sbind, sizeof(s_sbind), "<unknown: %#x>",
968 sbind);
969 return (s_sbind);
970 }
971 }
972
973 static const char *
st_type(unsigned int stype)974 st_type(unsigned int stype)
975 {
976 static char s_stype[32];
977
978 switch (stype) {
979 case STT_NOTYPE: return "NOTYPE";
980 case STT_OBJECT: return "OBJECT";
981 case STT_FUNC: return "FUNC";
982 case STT_SECTION: return "SECTION";
983 case STT_FILE: return "FILE";
984 case STT_COMMON: return "COMMON";
985 case STT_TLS: return "TLS";
986 default:
987 if (stype >= STT_LOOS && stype <= STT_HIOS)
988 snprintf(s_stype, sizeof(s_stype), "OS+%#x",
989 stype - STT_LOOS);
990 else if (stype >= STT_LOPROC && stype <= STT_HIPROC)
991 snprintf(s_stype, sizeof(s_stype), "PROC+%#x",
992 stype - STT_LOPROC);
993 else
994 snprintf(s_stype, sizeof(s_stype), "<unknown: %#x>",
995 stype);
996 return (s_stype);
997 }
998 }
999
1000 static const char *
st_vis(unsigned int svis)1001 st_vis(unsigned int svis)
1002 {
1003 static char s_svis[32];
1004
1005 switch(svis) {
1006 case STV_DEFAULT: return "DEFAULT";
1007 case STV_INTERNAL: return "INTERNAL";
1008 case STV_HIDDEN: return "HIDDEN";
1009 case STV_PROTECTED: return "PROTECTED";
1010 default:
1011 snprintf(s_svis, sizeof(s_svis), "<unknown: %#x>", svis);
1012 return (s_svis);
1013 }
1014 }
1015
1016 static const char *
st_shndx(unsigned int shndx)1017 st_shndx(unsigned int shndx)
1018 {
1019 static char s_shndx[32];
1020
1021 switch (shndx) {
1022 case SHN_UNDEF: return "UND";
1023 case SHN_ABS: return "ABS";
1024 case SHN_COMMON: return "COM";
1025 default:
1026 if (shndx >= SHN_LOPROC && shndx <= SHN_HIPROC)
1027 return "PRC";
1028 else if (shndx >= SHN_LOOS && shndx <= SHN_HIOS)
1029 return "OS";
1030 else
1031 snprintf(s_shndx, sizeof(s_shndx), "%u", shndx);
1032 return (s_shndx);
1033 }
1034 }
1035
1036 static struct {
1037 const char *ln;
1038 char sn;
1039 int value;
1040 } section_flag[] = {
1041 {"WRITE", 'W', SHF_WRITE},
1042 {"ALLOC", 'A', SHF_ALLOC},
1043 {"EXEC", 'X', SHF_EXECINSTR},
1044 {"MERGE", 'M', SHF_MERGE},
1045 {"STRINGS", 'S', SHF_STRINGS},
1046 {"INFO LINK", 'I', SHF_INFO_LINK},
1047 {"OS NONCONF", 'O', SHF_OS_NONCONFORMING},
1048 {"GROUP", 'G', SHF_GROUP},
1049 {"TLS", 'T', SHF_TLS},
1050 {NULL, 0, 0}
1051 };
1052
1053 static const char *
r_type(unsigned int mach,unsigned int type)1054 r_type(unsigned int mach, unsigned int type)
1055 {
1056 switch(mach) {
1057 case EM_NONE: return "";
1058 case EM_386:
1059 case EM_IAMCU:
1060 switch(type) {
1061 case 0: return "R_386_NONE";
1062 case 1: return "R_386_32";
1063 case 2: return "R_386_PC32";
1064 case 3: return "R_386_GOT32";
1065 case 4: return "R_386_PLT32";
1066 case 5: return "R_386_COPY";
1067 case 6: return "R_386_GLOB_DAT";
1068 case 7: return "R_386_JMP_SLOT";
1069 case 8: return "R_386_RELATIVE";
1070 case 9: return "R_386_GOTOFF";
1071 case 10: return "R_386_GOTPC";
1072 case 14: return "R_386_TLS_TPOFF";
1073 case 15: return "R_386_TLS_IE";
1074 case 16: return "R_386_TLS_GOTIE";
1075 case 17: return "R_386_TLS_LE";
1076 case 18: return "R_386_TLS_GD";
1077 case 19: return "R_386_TLS_LDM";
1078 case 24: return "R_386_TLS_GD_32";
1079 case 25: return "R_386_TLS_GD_PUSH";
1080 case 26: return "R_386_TLS_GD_CALL";
1081 case 27: return "R_386_TLS_GD_POP";
1082 case 28: return "R_386_TLS_LDM_32";
1083 case 29: return "R_386_TLS_LDM_PUSH";
1084 case 30: return "R_386_TLS_LDM_CALL";
1085 case 31: return "R_386_TLS_LDM_POP";
1086 case 32: return "R_386_TLS_LDO_32";
1087 case 33: return "R_386_TLS_IE_32";
1088 case 34: return "R_386_TLS_LE_32";
1089 case 35: return "R_386_TLS_DTPMOD32";
1090 case 36: return "R_386_TLS_DTPOFF32";
1091 case 37: return "R_386_TLS_TPOFF32";
1092 default: return "";
1093 }
1094 case EM_AARCH64:
1095 switch(type) {
1096 case 0: return "R_AARCH64_NONE";
1097 case 257: return "R_AARCH64_ABS64";
1098 case 258: return "R_AARCH64_ABS32";
1099 case 259: return "R_AARCH64_ABS16";
1100 case 260: return "R_AARCH64_PREL64";
1101 case 261: return "R_AARCH64_PREL32";
1102 case 262: return "R_AARCH64_PREL16";
1103 case 263: return "R_AARCH64_MOVW_UABS_G0";
1104 case 264: return "R_AARCH64_MOVW_UABS_G0_NC";
1105 case 265: return "R_AARCH64_MOVW_UABS_G1";
1106 case 266: return "R_AARCH64_MOVW_UABS_G1_NC";
1107 case 267: return "R_AARCH64_MOVW_UABS_G2";
1108 case 268: return "R_AARCH64_MOVW_UABS_G2_NC";
1109 case 269: return "R_AARCH64_MOVW_UABS_G3";
1110 case 270: return "R_AARCH64_MOVW_SABS_G0";
1111 case 271: return "R_AARCH64_MOVW_SABS_G1";
1112 case 272: return "R_AARCH64_MOVW_SABS_G2";
1113 case 273: return "R_AARCH64_LD_PREL_LO19";
1114 case 274: return "R_AARCH64_ADR_PREL_LO21";
1115 case 275: return "R_AARCH64_ADR_PREL_PG_HI21";
1116 case 276: return "R_AARCH64_ADR_PREL_PG_HI21_NC";
1117 case 277: return "R_AARCH64_ADD_ABS_LO12_NC";
1118 case 278: return "R_AARCH64_LDST8_ABS_LO12_NC";
1119 case 279: return "R_AARCH64_TSTBR14";
1120 case 280: return "R_AARCH64_CONDBR19";
1121 case 282: return "R_AARCH64_JUMP26";
1122 case 283: return "R_AARCH64_CALL26";
1123 case 284: return "R_AARCH64_LDST16_ABS_LO12_NC";
1124 case 285: return "R_AARCH64_LDST32_ABS_LO12_NC";
1125 case 286: return "R_AARCH64_LDST64_ABS_LO12_NC";
1126 case 287: return "R_AARCH64_MOVW_PREL_G0";
1127 case 288: return "R_AARCH64_MOVW_PREL_G0_NC";
1128 case 289: return "R_AARCH64_MOVW_PREL_G1";
1129 case 290: return "R_AARCH64_MOVW_PREL_G1_NC";
1130 case 291: return "R_AARCH64_MOVW_PREL_G2";
1131 case 292: return "R_AARCH64_MOVW_PREL_G2_NC";
1132 case 293: return "R_AARCH64_MOVW_PREL_G3";
1133 case 299: return "R_AARCH64_LDST128_ABS_LO12_NC";
1134 case 300: return "R_AARCH64_MOVW_GOTOFF_G0";
1135 case 301: return "R_AARCH64_MOVW_GOTOFF_G0_NC";
1136 case 302: return "R_AARCH64_MOVW_GOTOFF_G1";
1137 case 303: return "R_AARCH64_MOVW_GOTOFF_G1_NC";
1138 case 304: return "R_AARCH64_MOVW_GOTOFF_G2";
1139 case 305: return "R_AARCH64_MOVW_GOTOFF_G2_NC";
1140 case 306: return "R_AARCH64_MOVW_GOTOFF_G3";
1141 case 307: return "R_AARCH64_GOTREL64";
1142 case 308: return "R_AARCH64_GOTREL32";
1143 case 309: return "R_AARCH64_GOT_LD_PREL19";
1144 case 310: return "R_AARCH64_LD64_GOTOFF_LO15";
1145 case 311: return "R_AARCH64_ADR_GOT_PAGE";
1146 case 312: return "R_AARCH64_LD64_GOT_LO12_NC";
1147 case 313: return "R_AARCH64_LD64_GOTPAGE_LO15";
1148 case 1024: return "R_AARCH64_COPY";
1149 case 1025: return "R_AARCH64_GLOB_DAT";
1150 case 1026: return "R_AARCH64_JUMP_SLOT";
1151 case 1027: return "R_AARCH64_RELATIVE";
1152 case 1028: return "R_AARCH64_TLS_DTPREL64";
1153 case 1029: return "R_AARCH64_TLS_DTPMOD64";
1154 case 1030: return "R_AARCH64_TLS_TPREL64";
1155 case 1031: return "R_AARCH64_TLSDESC";
1156 case 1032: return "R_AARCH64_IRELATIVE";
1157 default: return "";
1158 }
1159 case EM_ARM:
1160 switch(type) {
1161 case 0: return "R_ARM_NONE";
1162 case 1: return "R_ARM_PC24";
1163 case 2: return "R_ARM_ABS32";
1164 case 3: return "R_ARM_REL32";
1165 case 4: return "R_ARM_PC13";
1166 case 5: return "R_ARM_ABS16";
1167 case 6: return "R_ARM_ABS12";
1168 case 7: return "R_ARM_THM_ABS5";
1169 case 8: return "R_ARM_ABS8";
1170 case 9: return "R_ARM_SBREL32";
1171 case 10: return "R_ARM_THM_PC22";
1172 case 11: return "R_ARM_THM_PC8";
1173 case 12: return "R_ARM_AMP_VCALL9";
1174 case 13: return "R_ARM_TLS_DESC";
1175 /* Obsolete R_ARM_SWI24 is also 13 */
1176 case 14: return "R_ARM_THM_SWI8";
1177 case 15: return "R_ARM_XPC25";
1178 case 16: return "R_ARM_THM_XPC22";
1179 case 17: return "R_ARM_TLS_DTPMOD32";
1180 case 18: return "R_ARM_TLS_DTPOFF32";
1181 case 19: return "R_ARM_TLS_TPOFF32";
1182 case 20: return "R_ARM_COPY";
1183 case 21: return "R_ARM_GLOB_DAT";
1184 case 22: return "R_ARM_JUMP_SLOT";
1185 case 23: return "R_ARM_RELATIVE";
1186 case 24: return "R_ARM_GOTOFF";
1187 case 25: return "R_ARM_GOTPC";
1188 case 26: return "R_ARM_GOT32";
1189 case 27: return "R_ARM_PLT32";
1190 case 28: return "R_ARM_CALL";
1191 case 29: return "R_ARM_JUMP24";
1192 case 30: return "R_ARM_THM_JUMP24";
1193 case 31: return "R_ARM_BASE_ABS";
1194 case 38: return "R_ARM_TARGET1";
1195 case 40: return "R_ARM_V4BX";
1196 case 42: return "R_ARM_PREL31";
1197 case 43: return "R_ARM_MOVW_ABS_NC";
1198 case 44: return "R_ARM_MOVT_ABS";
1199 case 45: return "R_ARM_MOVW_PREL_NC";
1200 case 46: return "R_ARM_MOVT_PREL";
1201 case 100: return "R_ARM_GNU_VTENTRY";
1202 case 101: return "R_ARM_GNU_VTINHERIT";
1203 case 250: return "R_ARM_RSBREL32";
1204 case 251: return "R_ARM_THM_RPC22";
1205 case 252: return "R_ARM_RREL32";
1206 case 253: return "R_ARM_RABS32";
1207 case 254: return "R_ARM_RPC24";
1208 case 255: return "R_ARM_RBASE";
1209 default: return "";
1210 }
1211 case EM_IA_64:
1212 switch(type) {
1213 case 0: return "R_IA_64_NONE";
1214 case 33: return "R_IA_64_IMM14";
1215 case 34: return "R_IA_64_IMM22";
1216 case 35: return "R_IA_64_IMM64";
1217 case 36: return "R_IA_64_DIR32MSB";
1218 case 37: return "R_IA_64_DIR32LSB";
1219 case 38: return "R_IA_64_DIR64MSB";
1220 case 39: return "R_IA_64_DIR64LSB";
1221 case 42: return "R_IA_64_GPREL22";
1222 case 43: return "R_IA_64_GPREL64I";
1223 case 44: return "R_IA_64_GPREL32MSB";
1224 case 45: return "R_IA_64_GPREL32LSB";
1225 case 46: return "R_IA_64_GPREL64MSB";
1226 case 47: return "R_IA_64_GPREL64LSB";
1227 case 50: return "R_IA_64_LTOFF22";
1228 case 51: return "R_IA_64_LTOFF64I";
1229 case 58: return "R_IA_64_PLTOFF22";
1230 case 59: return "R_IA_64_PLTOFF64I";
1231 case 62: return "R_IA_64_PLTOFF64MSB";
1232 case 63: return "R_IA_64_PLTOFF64LSB";
1233 case 67: return "R_IA_64_FPTR64I";
1234 case 68: return "R_IA_64_FPTR32MSB";
1235 case 69: return "R_IA_64_FPTR32LSB";
1236 case 70: return "R_IA_64_FPTR64MSB";
1237 case 71: return "R_IA_64_FPTR64LSB";
1238 case 72: return "R_IA_64_PCREL60B";
1239 case 73: return "R_IA_64_PCREL21B";
1240 case 74: return "R_IA_64_PCREL21M";
1241 case 75: return "R_IA_64_PCREL21F";
1242 case 76: return "R_IA_64_PCREL32MSB";
1243 case 77: return "R_IA_64_PCREL32LSB";
1244 case 78: return "R_IA_64_PCREL64MSB";
1245 case 79: return "R_IA_64_PCREL64LSB";
1246 case 82: return "R_IA_64_LTOFF_FPTR22";
1247 case 83: return "R_IA_64_LTOFF_FPTR64I";
1248 case 84: return "R_IA_64_LTOFF_FPTR32MSB";
1249 case 85: return "R_IA_64_LTOFF_FPTR32LSB";
1250 case 86: return "R_IA_64_LTOFF_FPTR64MSB";
1251 case 87: return "R_IA_64_LTOFF_FPTR64LSB";
1252 case 92: return "R_IA_64_SEGREL32MSB";
1253 case 93: return "R_IA_64_SEGREL32LSB";
1254 case 94: return "R_IA_64_SEGREL64MSB";
1255 case 95: return "R_IA_64_SEGREL64LSB";
1256 case 100: return "R_IA_64_SECREL32MSB";
1257 case 101: return "R_IA_64_SECREL32LSB";
1258 case 102: return "R_IA_64_SECREL64MSB";
1259 case 103: return "R_IA_64_SECREL64LSB";
1260 case 108: return "R_IA_64_REL32MSB";
1261 case 109: return "R_IA_64_REL32LSB";
1262 case 110: return "R_IA_64_REL64MSB";
1263 case 111: return "R_IA_64_REL64LSB";
1264 case 116: return "R_IA_64_LTV32MSB";
1265 case 117: return "R_IA_64_LTV32LSB";
1266 case 118: return "R_IA_64_LTV64MSB";
1267 case 119: return "R_IA_64_LTV64LSB";
1268 case 121: return "R_IA_64_PCREL21BI";
1269 case 122: return "R_IA_64_PCREL22";
1270 case 123: return "R_IA_64_PCREL64I";
1271 case 128: return "R_IA_64_IPLTMSB";
1272 case 129: return "R_IA_64_IPLTLSB";
1273 case 133: return "R_IA_64_SUB";
1274 case 134: return "R_IA_64_LTOFF22X";
1275 case 135: return "R_IA_64_LDXMOV";
1276 case 145: return "R_IA_64_TPREL14";
1277 case 146: return "R_IA_64_TPREL22";
1278 case 147: return "R_IA_64_TPREL64I";
1279 case 150: return "R_IA_64_TPREL64MSB";
1280 case 151: return "R_IA_64_TPREL64LSB";
1281 case 154: return "R_IA_64_LTOFF_TPREL22";
1282 case 166: return "R_IA_64_DTPMOD64MSB";
1283 case 167: return "R_IA_64_DTPMOD64LSB";
1284 case 170: return "R_IA_64_LTOFF_DTPMOD22";
1285 case 177: return "R_IA_64_DTPREL14";
1286 case 178: return "R_IA_64_DTPREL22";
1287 case 179: return "R_IA_64_DTPREL64I";
1288 case 180: return "R_IA_64_DTPREL32MSB";
1289 case 181: return "R_IA_64_DTPREL32LSB";
1290 case 182: return "R_IA_64_DTPREL64MSB";
1291 case 183: return "R_IA_64_DTPREL64LSB";
1292 case 186: return "R_IA_64_LTOFF_DTPREL22";
1293 default: return "";
1294 }
1295 case EM_MIPS:
1296 switch(type) {
1297 case 0: return "R_MIPS_NONE";
1298 case 1: return "R_MIPS_16";
1299 case 2: return "R_MIPS_32";
1300 case 3: return "R_MIPS_REL32";
1301 case 4: return "R_MIPS_26";
1302 case 5: return "R_MIPS_HI16";
1303 case 6: return "R_MIPS_LO16";
1304 case 7: return "R_MIPS_GPREL16";
1305 case 8: return "R_MIPS_LITERAL";
1306 case 9: return "R_MIPS_GOT16";
1307 case 10: return "R_MIPS_PC16";
1308 case 11: return "R_MIPS_CALL16";
1309 case 12: return "R_MIPS_GPREL32";
1310 case 21: return "R_MIPS_GOTHI16";
1311 case 22: return "R_MIPS_GOTLO16";
1312 case 30: return "R_MIPS_CALLHI16";
1313 case 31: return "R_MIPS_CALLLO16";
1314 case 38: return "R_MIPS_TLS_DTPMOD32";
1315 case 39: return "R_MIPS_TLS_DTPREL32";
1316 case 40: return "R_MIPS_TLS_DTPMOD64";
1317 case 41: return "R_MIPS_TLS_DTPREL64";
1318 case 42: return "R_MIPS_TLS_GD";
1319 case 43: return "R_MIPS_TLS_LDM";
1320 case 44: return "R_MIPS_TLS_DTPREL_HI16";
1321 case 45: return "R_MIPS_TLS_DTPREL_LO16";
1322 case 46: return "R_MIPS_TLS_GOTTPREL";
1323 case 47: return "R_MIPS_TLS_TPREL32";
1324 case 48: return "R_MIPS_TLS_TPREL64";
1325 case 49: return "R_MIPS_TLS_TPREL_HI16";
1326 case 50: return "R_MIPS_TLS_TPREL_LO16";
1327
1328 default: return "";
1329 }
1330 case EM_PPC:
1331 switch(type) {
1332 case 0: return "R_PPC_NONE";
1333 case 1: return "R_PPC_ADDR32";
1334 case 2: return "R_PPC_ADDR24";
1335 case 3: return "R_PPC_ADDR16";
1336 case 4: return "R_PPC_ADDR16_LO";
1337 case 5: return "R_PPC_ADDR16_HI";
1338 case 6: return "R_PPC_ADDR16_HA";
1339 case 7: return "R_PPC_ADDR14";
1340 case 8: return "R_PPC_ADDR14_BRTAKEN";
1341 case 9: return "R_PPC_ADDR14_BRNTAKEN";
1342 case 10: return "R_PPC_REL24";
1343 case 11: return "R_PPC_REL14";
1344 case 12: return "R_PPC_REL14_BRTAKEN";
1345 case 13: return "R_PPC_REL14_BRNTAKEN";
1346 case 14: return "R_PPC_GOT16";
1347 case 15: return "R_PPC_GOT16_LO";
1348 case 16: return "R_PPC_GOT16_HI";
1349 case 17: return "R_PPC_GOT16_HA";
1350 case 18: return "R_PPC_PLTREL24";
1351 case 19: return "R_PPC_COPY";
1352 case 20: return "R_PPC_GLOB_DAT";
1353 case 21: return "R_PPC_JMP_SLOT";
1354 case 22: return "R_PPC_RELATIVE";
1355 case 23: return "R_PPC_LOCAL24PC";
1356 case 24: return "R_PPC_UADDR32";
1357 case 25: return "R_PPC_UADDR16";
1358 case 26: return "R_PPC_REL32";
1359 case 27: return "R_PPC_PLT32";
1360 case 28: return "R_PPC_PLTREL32";
1361 case 29: return "R_PPC_PLT16_LO";
1362 case 30: return "R_PPC_PLT16_HI";
1363 case 31: return "R_PPC_PLT16_HA";
1364 case 32: return "R_PPC_SDAREL16";
1365 case 33: return "R_PPC_SECTOFF";
1366 case 34: return "R_PPC_SECTOFF_LO";
1367 case 35: return "R_PPC_SECTOFF_HI";
1368 case 36: return "R_PPC_SECTOFF_HA";
1369 case 67: return "R_PPC_TLS";
1370 case 68: return "R_PPC_DTPMOD32";
1371 case 69: return "R_PPC_TPREL16";
1372 case 70: return "R_PPC_TPREL16_LO";
1373 case 71: return "R_PPC_TPREL16_HI";
1374 case 72: return "R_PPC_TPREL16_HA";
1375 case 73: return "R_PPC_TPREL32";
1376 case 74: return "R_PPC_DTPREL16";
1377 case 75: return "R_PPC_DTPREL16_LO";
1378 case 76: return "R_PPC_DTPREL16_HI";
1379 case 77: return "R_PPC_DTPREL16_HA";
1380 case 78: return "R_PPC_DTPREL32";
1381 case 79: return "R_PPC_GOT_TLSGD16";
1382 case 80: return "R_PPC_GOT_TLSGD16_LO";
1383 case 81: return "R_PPC_GOT_TLSGD16_HI";
1384 case 82: return "R_PPC_GOT_TLSGD16_HA";
1385 case 83: return "R_PPC_GOT_TLSLD16";
1386 case 84: return "R_PPC_GOT_TLSLD16_LO";
1387 case 85: return "R_PPC_GOT_TLSLD16_HI";
1388 case 86: return "R_PPC_GOT_TLSLD16_HA";
1389 case 87: return "R_PPC_GOT_TPREL16";
1390 case 88: return "R_PPC_GOT_TPREL16_LO";
1391 case 89: return "R_PPC_GOT_TPREL16_HI";
1392 case 90: return "R_PPC_GOT_TPREL16_HA";
1393 case 101: return "R_PPC_EMB_NADDR32";
1394 case 102: return "R_PPC_EMB_NADDR16";
1395 case 103: return "R_PPC_EMB_NADDR16_LO";
1396 case 104: return "R_PPC_EMB_NADDR16_HI";
1397 case 105: return "R_PPC_EMB_NADDR16_HA";
1398 case 106: return "R_PPC_EMB_SDAI16";
1399 case 107: return "R_PPC_EMB_SDA2I16";
1400 case 108: return "R_PPC_EMB_SDA2REL";
1401 case 109: return "R_PPC_EMB_SDA21";
1402 case 110: return "R_PPC_EMB_MRKREF";
1403 case 111: return "R_PPC_EMB_RELSEC16";
1404 case 112: return "R_PPC_EMB_RELST_LO";
1405 case 113: return "R_PPC_EMB_RELST_HI";
1406 case 114: return "R_PPC_EMB_RELST_HA";
1407 case 115: return "R_PPC_EMB_BIT_FLD";
1408 case 116: return "R_PPC_EMB_RELSDA";
1409 default: return "";
1410 }
1411 case EM_RISCV:
1412 switch(type) {
1413 case 0: return "R_RISCV_NONE";
1414 case 1: return "R_RISCV_32";
1415 case 2: return "R_RISCV_64";
1416 case 3: return "R_RISCV_RELATIVE";
1417 case 4: return "R_RISCV_COPY";
1418 case 5: return "R_RISCV_JUMP_SLOT";
1419 case 6: return "R_RISCV_TLS_DTPMOD32";
1420 case 7: return "R_RISCV_TLS_DTPMOD64";
1421 case 8: return "R_RISCV_TLS_DTPREL32";
1422 case 9: return "R_RISCV_TLS_DTPREL64";
1423 case 10: return "R_RISCV_TLS_TPREL32";
1424 case 11: return "R_RISCV_TLS_TPREL64";
1425 case 16: return "R_RISCV_BRANCH";
1426 case 17: return "R_RISCV_JAL";
1427 case 18: return "R_RISCV_CALL";
1428 case 19: return "R_RISCV_CALL_PLT";
1429 case 20: return "R_RISCV_GOT_HI20";
1430 case 21: return "R_RISCV_TLS_GOT_HI20";
1431 case 22: return "R_RISCV_TLS_GD_HI20";
1432 case 23: return "R_RISCV_PCREL_HI20";
1433 case 24: return "R_RISCV_PCREL_LO12_I";
1434 case 25: return "R_RISCV_PCREL_LO12_S";
1435 case 26: return "R_RISCV_HI20";
1436 case 27: return "R_RISCV_LO12_I";
1437 case 28: return "R_RISCV_LO12_S";
1438 case 29: return "R_RISCV_TPREL_HI20";
1439 case 30: return "R_RISCV_TPREL_LO12_I";
1440 case 31: return "R_RISCV_TPREL_LO12_S";
1441 case 32: return "R_RISCV_TPREL_ADD";
1442 case 33: return "R_RISCV_ADD8";
1443 case 34: return "R_RISCV_ADD16";
1444 case 35: return "R_RISCV_ADD32";
1445 case 36: return "R_RISCV_ADD64";
1446 case 37: return "R_RISCV_SUB8";
1447 case 38: return "R_RISCV_SUB16";
1448 case 39: return "R_RISCV_SUB32";
1449 case 40: return "R_RISCV_SUB64";
1450 case 41: return "R_RISCV_GNU_VTINHERIT";
1451 case 42: return "R_RISCV_GNU_VTENTRY";
1452 case 43: return "R_RISCV_ALIGN";
1453 case 44: return "R_RISCV_RVC_BRANCH";
1454 case 45: return "R_RISCV_RVC_JUMP";
1455 }
1456 case EM_SPARC:
1457 case EM_SPARCV9:
1458 switch(type) {
1459 case 0: return "R_SPARC_NONE";
1460 case 1: return "R_SPARC_8";
1461 case 2: return "R_SPARC_16";
1462 case 3: return "R_SPARC_32";
1463 case 4: return "R_SPARC_DISP8";
1464 case 5: return "R_SPARC_DISP16";
1465 case 6: return "R_SPARC_DISP32";
1466 case 7: return "R_SPARC_WDISP30";
1467 case 8: return "R_SPARC_WDISP22";
1468 case 9: return "R_SPARC_HI22";
1469 case 10: return "R_SPARC_22";
1470 case 11: return "R_SPARC_13";
1471 case 12: return "R_SPARC_LO10";
1472 case 13: return "R_SPARC_GOT10";
1473 case 14: return "R_SPARC_GOT13";
1474 case 15: return "R_SPARC_GOT22";
1475 case 16: return "R_SPARC_PC10";
1476 case 17: return "R_SPARC_PC22";
1477 case 18: return "R_SPARC_WPLT30";
1478 case 19: return "R_SPARC_COPY";
1479 case 20: return "R_SPARC_GLOB_DAT";
1480 case 21: return "R_SPARC_JMP_SLOT";
1481 case 22: return "R_SPARC_RELATIVE";
1482 case 23: return "R_SPARC_UA32";
1483 case 24: return "R_SPARC_PLT32";
1484 case 25: return "R_SPARC_HIPLT22";
1485 case 26: return "R_SPARC_LOPLT10";
1486 case 27: return "R_SPARC_PCPLT32";
1487 case 28: return "R_SPARC_PCPLT22";
1488 case 29: return "R_SPARC_PCPLT10";
1489 case 30: return "R_SPARC_10";
1490 case 31: return "R_SPARC_11";
1491 case 32: return "R_SPARC_64";
1492 case 33: return "R_SPARC_OLO10";
1493 case 34: return "R_SPARC_HH22";
1494 case 35: return "R_SPARC_HM10";
1495 case 36: return "R_SPARC_LM22";
1496 case 37: return "R_SPARC_PC_HH22";
1497 case 38: return "R_SPARC_PC_HM10";
1498 case 39: return "R_SPARC_PC_LM22";
1499 case 40: return "R_SPARC_WDISP16";
1500 case 41: return "R_SPARC_WDISP19";
1501 case 42: return "R_SPARC_GLOB_JMP";
1502 case 43: return "R_SPARC_7";
1503 case 44: return "R_SPARC_5";
1504 case 45: return "R_SPARC_6";
1505 case 46: return "R_SPARC_DISP64";
1506 case 47: return "R_SPARC_PLT64";
1507 case 48: return "R_SPARC_HIX22";
1508 case 49: return "R_SPARC_LOX10";
1509 case 50: return "R_SPARC_H44";
1510 case 51: return "R_SPARC_M44";
1511 case 52: return "R_SPARC_L44";
1512 case 53: return "R_SPARC_REGISTER";
1513 case 54: return "R_SPARC_UA64";
1514 case 55: return "R_SPARC_UA16";
1515 case 56: return "R_SPARC_TLS_GD_HI22";
1516 case 57: return "R_SPARC_TLS_GD_LO10";
1517 case 58: return "R_SPARC_TLS_GD_ADD";
1518 case 59: return "R_SPARC_TLS_GD_CALL";
1519 case 60: return "R_SPARC_TLS_LDM_HI22";
1520 case 61: return "R_SPARC_TLS_LDM_LO10";
1521 case 62: return "R_SPARC_TLS_LDM_ADD";
1522 case 63: return "R_SPARC_TLS_LDM_CALL";
1523 case 64: return "R_SPARC_TLS_LDO_HIX22";
1524 case 65: return "R_SPARC_TLS_LDO_LOX10";
1525 case 66: return "R_SPARC_TLS_LDO_ADD";
1526 case 67: return "R_SPARC_TLS_IE_HI22";
1527 case 68: return "R_SPARC_TLS_IE_LO10";
1528 case 69: return "R_SPARC_TLS_IE_LD";
1529 case 70: return "R_SPARC_TLS_IE_LDX";
1530 case 71: return "R_SPARC_TLS_IE_ADD";
1531 case 72: return "R_SPARC_TLS_LE_HIX22";
1532 case 73: return "R_SPARC_TLS_LE_LOX10";
1533 case 74: return "R_SPARC_TLS_DTPMOD32";
1534 case 75: return "R_SPARC_TLS_DTPMOD64";
1535 case 76: return "R_SPARC_TLS_DTPOFF32";
1536 case 77: return "R_SPARC_TLS_DTPOFF64";
1537 case 78: return "R_SPARC_TLS_TPOFF32";
1538 case 79: return "R_SPARC_TLS_TPOFF64";
1539 default: return "";
1540 }
1541 case EM_X86_64:
1542 switch(type) {
1543 case 0: return "R_X86_64_NONE";
1544 case 1: return "R_X86_64_64";
1545 case 2: return "R_X86_64_PC32";
1546 case 3: return "R_X86_64_GOT32";
1547 case 4: return "R_X86_64_PLT32";
1548 case 5: return "R_X86_64_COPY";
1549 case 6: return "R_X86_64_GLOB_DAT";
1550 case 7: return "R_X86_64_JMP_SLOT";
1551 case 8: return "R_X86_64_RELATIVE";
1552 case 9: return "R_X86_64_GOTPCREL";
1553 case 10: return "R_X86_64_32";
1554 case 11: return "R_X86_64_32S";
1555 case 12: return "R_X86_64_16";
1556 case 13: return "R_X86_64_PC16";
1557 case 14: return "R_X86_64_8";
1558 case 15: return "R_X86_64_PC8";
1559 case 16: return "R_X86_64_DTPMOD64";
1560 case 17: return "R_X86_64_DTPOFF64";
1561 case 18: return "R_X86_64_TPOFF64";
1562 case 19: return "R_X86_64_TLSGD";
1563 case 20: return "R_X86_64_TLSLD";
1564 case 21: return "R_X86_64_DTPOFF32";
1565 case 22: return "R_X86_64_GOTTPOFF";
1566 case 23: return "R_X86_64_TPOFF32";
1567 case 24: return "R_X86_64_PC64";
1568 case 25: return "R_X86_64_GOTOFF64";
1569 case 26: return "R_X86_64_GOTPC32";
1570 case 27: return "R_X86_64_GOT64";
1571 case 28: return "R_X86_64_GOTPCREL64";
1572 case 29: return "R_X86_64_GOTPC64";
1573 case 30: return "R_X86_64_GOTPLT64";
1574 case 31: return "R_X86_64_PLTOFF64";
1575 case 32: return "R_X86_64_SIZE32";
1576 case 33: return "R_X86_64_SIZE64";
1577 case 34: return "R_X86_64_GOTPC32_TLSDESC";
1578 case 35: return "R_X86_64_TLSDESC_CALL";
1579 case 36: return "R_X86_64_TLSDESC";
1580 case 37: return "R_X86_64_IRELATIVE";
1581 default: return "";
1582 }
1583 default: return "";
1584 }
1585 }
1586
1587 static const char *
note_type(const char * name,unsigned int et,unsigned int nt)1588 note_type(const char *name, unsigned int et, unsigned int nt)
1589 {
1590 if ((strcmp(name, "CORE") == 0 || strcmp(name, "LINUX") == 0) &&
1591 et == ET_CORE)
1592 return note_type_linux_core(nt);
1593 else if (strcmp(name, "FreeBSD") == 0)
1594 if (et == ET_CORE)
1595 return note_type_freebsd_core(nt);
1596 else
1597 return note_type_freebsd(nt);
1598 else if (strcmp(name, "GNU") == 0 && et != ET_CORE)
1599 return note_type_gnu(nt);
1600 else if (strcmp(name, "NetBSD") == 0 && et != ET_CORE)
1601 return note_type_netbsd(nt);
1602 else if (strcmp(name, "OpenBSD") == 0 && et != ET_CORE)
1603 return note_type_openbsd(nt);
1604 else if (strcmp(name, "Xen") == 0 && et != ET_CORE)
1605 return note_type_xen(nt);
1606 return note_type_unknown(nt);
1607 }
1608
1609 static const char *
note_type_freebsd(unsigned int nt)1610 note_type_freebsd(unsigned int nt)
1611 {
1612 switch (nt) {
1613 case 1: return "NT_FREEBSD_ABI_TAG";
1614 case 2: return "NT_FREEBSD_NOINIT_TAG";
1615 case 3: return "NT_FREEBSD_ARCH_TAG";
1616 default: return (note_type_unknown(nt));
1617 }
1618 }
1619
1620 static const char *
note_type_freebsd_core(unsigned int nt)1621 note_type_freebsd_core(unsigned int nt)
1622 {
1623 switch (nt) {
1624 case 1: return "NT_PRSTATUS";
1625 case 2: return "NT_FPREGSET";
1626 case 3: return "NT_PRPSINFO";
1627 case 7: return "NT_THRMISC";
1628 case 8: return "NT_PROCSTAT_PROC";
1629 case 9: return "NT_PROCSTAT_FILES";
1630 case 10: return "NT_PROCSTAT_VMMAP";
1631 case 11: return "NT_PROCSTAT_GROUPS";
1632 case 12: return "NT_PROCSTAT_UMASK";
1633 case 13: return "NT_PROCSTAT_RLIMIT";
1634 case 14: return "NT_PROCSTAT_OSREL";
1635 case 15: return "NT_PROCSTAT_PSSTRINGS";
1636 case 16: return "NT_PROCSTAT_AUXV";
1637 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)";
1638 default: return (note_type_unknown(nt));
1639 }
1640 }
1641
1642 static const char *
note_type_linux_core(unsigned int nt)1643 note_type_linux_core(unsigned int nt)
1644 {
1645 switch (nt) {
1646 case 1: return "NT_PRSTATUS (Process status)";
1647 case 2: return "NT_FPREGSET (Floating point information)";
1648 case 3: return "NT_PRPSINFO (Process information)";
1649 case 4: return "NT_TASKSTRUCT (Task structure)";
1650 case 6: return "NT_AUXV (Auxiliary vector)";
1651 case 10: return "NT_PSTATUS (Linux process status)";
1652 case 12: return "NT_FPREGS (Linux floating point regset)";
1653 case 13: return "NT_PSINFO (Linux process information)";
1654 case 16: return "NT_LWPSTATUS (Linux lwpstatus_t type)";
1655 case 17: return "NT_LWPSINFO (Linux lwpinfo_t type)";
1656 case 18: return "NT_WIN32PSTATUS (win32_pstatus structure)";
1657 case 0x100: return "NT_PPC_VMX (ppc Altivec registers)";
1658 case 0x102: return "NT_PPC_VSX (ppc VSX registers)";
1659 case 0x202: return "NT_X86_XSTATE (x86 XSAVE extended state)";
1660 case 0x300: return "NT_S390_HIGH_GPRS (s390 upper register halves)";
1661 case 0x301: return "NT_S390_TIMER (s390 timer register)";
1662 case 0x302: return "NT_S390_TODCMP (s390 TOD comparator register)";
1663 case 0x303: return "NT_S390_TODPREG (s390 TOD programmable register)";
1664 case 0x304: return "NT_S390_CTRS (s390 control registers)";
1665 case 0x305: return "NT_S390_PREFIX (s390 prefix register)";
1666 case 0x400: return "NT_ARM_VFP (arm VFP registers)";
1667 case 0x46494c45UL: return "NT_FILE (mapped files)";
1668 case 0x46E62B7FUL: return "NT_PRXFPREG (Linux user_xfpregs structure)";
1669 case 0x53494749UL: return "NT_SIGINFO (siginfo_t data)";
1670 default: return (note_type_unknown(nt));
1671 }
1672 }
1673
1674 static const char *
note_type_gnu(unsigned int nt)1675 note_type_gnu(unsigned int nt)
1676 {
1677 switch (nt) {
1678 case 1: return "NT_GNU_ABI_TAG";
1679 case 2: return "NT_GNU_HWCAP (Hardware capabilities)";
1680 case 3: return "NT_GNU_BUILD_ID (Build id set by ld(1))";
1681 case 4: return "NT_GNU_GOLD_VERSION (GNU gold version)";
1682 default: return (note_type_unknown(nt));
1683 }
1684 }
1685
1686 static const char *
note_type_netbsd(unsigned int nt)1687 note_type_netbsd(unsigned int nt)
1688 {
1689 switch (nt) {
1690 case 1: return "NT_NETBSD_IDENT";
1691 default: return (note_type_unknown(nt));
1692 }
1693 }
1694
1695 static const char *
note_type_openbsd(unsigned int nt)1696 note_type_openbsd(unsigned int nt)
1697 {
1698 switch (nt) {
1699 case 1: return "NT_OPENBSD_IDENT";
1700 default: return (note_type_unknown(nt));
1701 }
1702 }
1703
1704 static const char *
note_type_unknown(unsigned int nt)1705 note_type_unknown(unsigned int nt)
1706 {
1707 static char s_nt[32];
1708
1709 snprintf(s_nt, sizeof(s_nt),
1710 nt >= 0x100 ? "<unknown: 0x%x>" : "<unknown: %u>", nt);
1711 return (s_nt);
1712 }
1713
1714 static const char *
note_type_xen(unsigned int nt)1715 note_type_xen(unsigned int nt)
1716 {
1717 switch (nt) {
1718 case 0: return "XEN_ELFNOTE_INFO";
1719 case 1: return "XEN_ELFNOTE_ENTRY";
1720 case 2: return "XEN_ELFNOTE_HYPERCALL_PAGE";
1721 case 3: return "XEN_ELFNOTE_VIRT_BASE";
1722 case 4: return "XEN_ELFNOTE_PADDR_OFFSET";
1723 case 5: return "XEN_ELFNOTE_XEN_VERSION";
1724 case 6: return "XEN_ELFNOTE_GUEST_OS";
1725 case 7: return "XEN_ELFNOTE_GUEST_VERSION";
1726 case 8: return "XEN_ELFNOTE_LOADER";
1727 case 9: return "XEN_ELFNOTE_PAE_MODE";
1728 case 10: return "XEN_ELFNOTE_FEATURES";
1729 case 11: return "XEN_ELFNOTE_BSD_SYMTAB";
1730 case 12: return "XEN_ELFNOTE_HV_START_LOW";
1731 case 13: return "XEN_ELFNOTE_L1_MFN_VALID";
1732 case 14: return "XEN_ELFNOTE_SUSPEND_CANCEL";
1733 case 15: return "XEN_ELFNOTE_INIT_P2M";
1734 case 16: return "XEN_ELFNOTE_MOD_START_PFN";
1735 case 17: return "XEN_ELFNOTE_SUPPORTED_FEATURES";
1736 default: return (note_type_unknown(nt));
1737 }
1738 }
1739
1740 static struct {
1741 const char *name;
1742 int value;
1743 } l_flag[] = {
1744 {"EXACT_MATCH", LL_EXACT_MATCH},
1745 {"IGNORE_INT_VER", LL_IGNORE_INT_VER},
1746 {"REQUIRE_MINOR", LL_REQUIRE_MINOR},
1747 {"EXPORTS", LL_EXPORTS},
1748 {"DELAY_LOAD", LL_DELAY_LOAD},
1749 {"DELTA", LL_DELTA},
1750 {NULL, 0}
1751 };
1752
1753 static struct mips_option mips_exceptions_option[] = {
1754 {OEX_PAGE0, "PAGE0"},
1755 {OEX_SMM, "SMM"},
1756 {OEX_PRECISEFP, "PRECISEFP"},
1757 {OEX_DISMISS, "DISMISS"},
1758 {0, NULL}
1759 };
1760
1761 static struct mips_option mips_pad_option[] = {
1762 {OPAD_PREFIX, "PREFIX"},
1763 {OPAD_POSTFIX, "POSTFIX"},
1764 {OPAD_SYMBOL, "SYMBOL"},
1765 {0, NULL}
1766 };
1767
1768 static struct mips_option mips_hwpatch_option[] = {
1769 {OHW_R4KEOP, "R4KEOP"},
1770 {OHW_R8KPFETCH, "R8KPFETCH"},
1771 {OHW_R5KEOP, "R5KEOP"},
1772 {OHW_R5KCVTL, "R5KCVTL"},
1773 {0, NULL}
1774 };
1775
1776 static struct mips_option mips_hwa_option[] = {
1777 {OHWA0_R4KEOP_CHECKED, "R4KEOP_CHECKED"},
1778 {OHWA0_R4KEOP_CLEAN, "R4KEOP_CLEAN"},
1779 {0, NULL}
1780 };
1781
1782 static struct mips_option mips_hwo_option[] = {
1783 {OHWO0_FIXADE, "FIXADE"},
1784 {0, NULL}
1785 };
1786
1787 static const char *
option_kind(uint8_t kind)1788 option_kind(uint8_t kind)
1789 {
1790 static char s_kind[32];
1791
1792 switch (kind) {
1793 case ODK_NULL: return "NULL";
1794 case ODK_REGINFO: return "REGINFO";
1795 case ODK_EXCEPTIONS: return "EXCEPTIONS";
1796 case ODK_PAD: return "PAD";
1797 case ODK_HWPATCH: return "HWPATCH";
1798 case ODK_FILL: return "FILL";
1799 case ODK_TAGS: return "TAGS";
1800 case ODK_HWAND: return "HWAND";
1801 case ODK_HWOR: return "HWOR";
1802 case ODK_GP_GROUP: return "GP_GROUP";
1803 case ODK_IDENT: return "IDENT";
1804 default:
1805 snprintf(s_kind, sizeof(s_kind), "<unknown: %u>", kind);
1806 return (s_kind);
1807 }
1808 }
1809
1810 static const char *
top_tag(unsigned int tag)1811 top_tag(unsigned int tag)
1812 {
1813 static char s_top_tag[32];
1814
1815 switch (tag) {
1816 case 1: return "File Attributes";
1817 case 2: return "Section Attributes";
1818 case 3: return "Symbol Attributes";
1819 default:
1820 snprintf(s_top_tag, sizeof(s_top_tag), "Unknown tag: %u", tag);
1821 return (s_top_tag);
1822 }
1823 }
1824
1825 static const char *
aeabi_cpu_arch(uint64_t arch)1826 aeabi_cpu_arch(uint64_t arch)
1827 {
1828 static char s_cpu_arch[32];
1829
1830 switch (arch) {
1831 case 0: return "Pre-V4";
1832 case 1: return "ARM v4";
1833 case 2: return "ARM v4T";
1834 case 3: return "ARM v5T";
1835 case 4: return "ARM v5TE";
1836 case 5: return "ARM v5TEJ";
1837 case 6: return "ARM v6";
1838 case 7: return "ARM v6KZ";
1839 case 8: return "ARM v6T2";
1840 case 9: return "ARM v6K";
1841 case 10: return "ARM v7";
1842 case 11: return "ARM v6-M";
1843 case 12: return "ARM v6S-M";
1844 case 13: return "ARM v7E-M";
1845 default:
1846 snprintf(s_cpu_arch, sizeof(s_cpu_arch),
1847 "Unknown (%ju)", (uintmax_t) arch);
1848 return (s_cpu_arch);
1849 }
1850 }
1851
1852 static const char *
aeabi_cpu_arch_profile(uint64_t pf)1853 aeabi_cpu_arch_profile(uint64_t pf)
1854 {
1855 static char s_arch_profile[32];
1856
1857 switch (pf) {
1858 case 0:
1859 return "Not applicable";
1860 case 0x41: /* 'A' */
1861 return "Application Profile";
1862 case 0x52: /* 'R' */
1863 return "Real-Time Profile";
1864 case 0x4D: /* 'M' */
1865 return "Microcontroller Profile";
1866 case 0x53: /* 'S' */
1867 return "Application or Real-Time Profile";
1868 default:
1869 snprintf(s_arch_profile, sizeof(s_arch_profile),
1870 "Unknown (%ju)\n", (uintmax_t) pf);
1871 return (s_arch_profile);
1872 }
1873 }
1874
1875 static const char *
aeabi_arm_isa(uint64_t ai)1876 aeabi_arm_isa(uint64_t ai)
1877 {
1878 static char s_ai[32];
1879
1880 switch (ai) {
1881 case 0: return "No";
1882 case 1: return "Yes";
1883 default:
1884 snprintf(s_ai, sizeof(s_ai), "Unknown (%ju)\n",
1885 (uintmax_t) ai);
1886 return (s_ai);
1887 }
1888 }
1889
1890 static const char *
aeabi_thumb_isa(uint64_t ti)1891 aeabi_thumb_isa(uint64_t ti)
1892 {
1893 static char s_ti[32];
1894
1895 switch (ti) {
1896 case 0: return "No";
1897 case 1: return "16-bit Thumb";
1898 case 2: return "32-bit Thumb";
1899 default:
1900 snprintf(s_ti, sizeof(s_ti), "Unknown (%ju)\n",
1901 (uintmax_t) ti);
1902 return (s_ti);
1903 }
1904 }
1905
1906 static const char *
aeabi_fp_arch(uint64_t fp)1907 aeabi_fp_arch(uint64_t fp)
1908 {
1909 static char s_fp_arch[32];
1910
1911 switch (fp) {
1912 case 0: return "No";
1913 case 1: return "VFPv1";
1914 case 2: return "VFPv2";
1915 case 3: return "VFPv3";
1916 case 4: return "VFPv3-D16";
1917 case 5: return "VFPv4";
1918 case 6: return "VFPv4-D16";
1919 default:
1920 snprintf(s_fp_arch, sizeof(s_fp_arch), "Unknown (%ju)",
1921 (uintmax_t) fp);
1922 return (s_fp_arch);
1923 }
1924 }
1925
1926 static const char *
aeabi_wmmx_arch(uint64_t wmmx)1927 aeabi_wmmx_arch(uint64_t wmmx)
1928 {
1929 static char s_wmmx[32];
1930
1931 switch (wmmx) {
1932 case 0: return "No";
1933 case 1: return "WMMXv1";
1934 case 2: return "WMMXv2";
1935 default:
1936 snprintf(s_wmmx, sizeof(s_wmmx), "Unknown (%ju)",
1937 (uintmax_t) wmmx);
1938 return (s_wmmx);
1939 }
1940 }
1941
1942 static const char *
aeabi_adv_simd_arch(uint64_t simd)1943 aeabi_adv_simd_arch(uint64_t simd)
1944 {
1945 static char s_simd[32];
1946
1947 switch (simd) {
1948 case 0: return "No";
1949 case 1: return "NEONv1";
1950 case 2: return "NEONv2";
1951 default:
1952 snprintf(s_simd, sizeof(s_simd), "Unknown (%ju)",
1953 (uintmax_t) simd);
1954 return (s_simd);
1955 }
1956 }
1957
1958 static const char *
aeabi_pcs_config(uint64_t pcs)1959 aeabi_pcs_config(uint64_t pcs)
1960 {
1961 static char s_pcs[32];
1962
1963 switch (pcs) {
1964 case 0: return "None";
1965 case 1: return "Bare platform";
1966 case 2: return "Linux";
1967 case 3: return "Linux DSO";
1968 case 4: return "Palm OS 2004";
1969 case 5: return "Palm OS (future)";
1970 case 6: return "Symbian OS 2004";
1971 case 7: return "Symbian OS (future)";
1972 default:
1973 snprintf(s_pcs, sizeof(s_pcs), "Unknown (%ju)",
1974 (uintmax_t) pcs);
1975 return (s_pcs);
1976 }
1977 }
1978
1979 static const char *
aeabi_pcs_r9(uint64_t r9)1980 aeabi_pcs_r9(uint64_t r9)
1981 {
1982 static char s_r9[32];
1983
1984 switch (r9) {
1985 case 0: return "V6";
1986 case 1: return "SB";
1987 case 2: return "TLS pointer";
1988 case 3: return "Unused";
1989 default:
1990 snprintf(s_r9, sizeof(s_r9), "Unknown (%ju)", (uintmax_t) r9);
1991 return (s_r9);
1992 }
1993 }
1994
1995 static const char *
aeabi_pcs_rw(uint64_t rw)1996 aeabi_pcs_rw(uint64_t rw)
1997 {
1998 static char s_rw[32];
1999
2000 switch (rw) {
2001 case 0: return "Absolute";
2002 case 1: return "PC-relative";
2003 case 2: return "SB-relative";
2004 case 3: return "None";
2005 default:
2006 snprintf(s_rw, sizeof(s_rw), "Unknown (%ju)", (uintmax_t) rw);
2007 return (s_rw);
2008 }
2009 }
2010
2011 static const char *
aeabi_pcs_ro(uint64_t ro)2012 aeabi_pcs_ro(uint64_t ro)
2013 {
2014 static char s_ro[32];
2015
2016 switch (ro) {
2017 case 0: return "Absolute";
2018 case 1: return "PC-relative";
2019 case 2: return "None";
2020 default:
2021 snprintf(s_ro, sizeof(s_ro), "Unknown (%ju)", (uintmax_t) ro);
2022 return (s_ro);
2023 }
2024 }
2025
2026 static const char *
aeabi_pcs_got(uint64_t got)2027 aeabi_pcs_got(uint64_t got)
2028 {
2029 static char s_got[32];
2030
2031 switch (got) {
2032 case 0: return "None";
2033 case 1: return "direct";
2034 case 2: return "indirect via GOT";
2035 default:
2036 snprintf(s_got, sizeof(s_got), "Unknown (%ju)",
2037 (uintmax_t) got);
2038 return (s_got);
2039 }
2040 }
2041
2042 static const char *
aeabi_pcs_wchar_t(uint64_t wt)2043 aeabi_pcs_wchar_t(uint64_t wt)
2044 {
2045 static char s_wt[32];
2046
2047 switch (wt) {
2048 case 0: return "None";
2049 case 2: return "wchar_t size 2";
2050 case 4: return "wchar_t size 4";
2051 default:
2052 snprintf(s_wt, sizeof(s_wt), "Unknown (%ju)", (uintmax_t) wt);
2053 return (s_wt);
2054 }
2055 }
2056
2057 static const char *
aeabi_enum_size(uint64_t es)2058 aeabi_enum_size(uint64_t es)
2059 {
2060 static char s_es[32];
2061
2062 switch (es) {
2063 case 0: return "None";
2064 case 1: return "smallest";
2065 case 2: return "32-bit";
2066 case 3: return "visible 32-bit";
2067 default:
2068 snprintf(s_es, sizeof(s_es), "Unknown (%ju)", (uintmax_t) es);
2069 return (s_es);
2070 }
2071 }
2072
2073 static const char *
aeabi_align_needed(uint64_t an)2074 aeabi_align_needed(uint64_t an)
2075 {
2076 static char s_align_n[64];
2077
2078 switch (an) {
2079 case 0: return "No";
2080 case 1: return "8-byte align";
2081 case 2: return "4-byte align";
2082 case 3: return "Reserved";
2083 default:
2084 if (an >= 4 && an <= 12)
2085 snprintf(s_align_n, sizeof(s_align_n), "8-byte align"
2086 " and up to 2^%ju-byte extended align",
2087 (uintmax_t) an);
2088 else
2089 snprintf(s_align_n, sizeof(s_align_n), "Unknown (%ju)",
2090 (uintmax_t) an);
2091 return (s_align_n);
2092 }
2093 }
2094
2095 static const char *
aeabi_align_preserved(uint64_t ap)2096 aeabi_align_preserved(uint64_t ap)
2097 {
2098 static char s_align_p[128];
2099
2100 switch (ap) {
2101 case 0: return "No";
2102 case 1: return "8-byte align";
2103 case 2: return "8-byte align and SP % 8 == 0";
2104 case 3: return "Reserved";
2105 default:
2106 if (ap >= 4 && ap <= 12)
2107 snprintf(s_align_p, sizeof(s_align_p), "8-byte align"
2108 " and SP %% 8 == 0 and up to 2^%ju-byte extended"
2109 " align", (uintmax_t) ap);
2110 else
2111 snprintf(s_align_p, sizeof(s_align_p), "Unknown (%ju)",
2112 (uintmax_t) ap);
2113 return (s_align_p);
2114 }
2115 }
2116
2117 static const char *
aeabi_fp_rounding(uint64_t fr)2118 aeabi_fp_rounding(uint64_t fr)
2119 {
2120 static char s_fp_r[32];
2121
2122 switch (fr) {
2123 case 0: return "Unused";
2124 case 1: return "Needed";
2125 default:
2126 snprintf(s_fp_r, sizeof(s_fp_r), "Unknown (%ju)",
2127 (uintmax_t) fr);
2128 return (s_fp_r);
2129 }
2130 }
2131
2132 static const char *
aeabi_fp_denormal(uint64_t fd)2133 aeabi_fp_denormal(uint64_t fd)
2134 {
2135 static char s_fp_d[32];
2136
2137 switch (fd) {
2138 case 0: return "Unused";
2139 case 1: return "Needed";
2140 case 2: return "Sign Only";
2141 default:
2142 snprintf(s_fp_d, sizeof(s_fp_d), "Unknown (%ju)",
2143 (uintmax_t) fd);
2144 return (s_fp_d);
2145 }
2146 }
2147
2148 static const char *
aeabi_fp_exceptions(uint64_t fe)2149 aeabi_fp_exceptions(uint64_t fe)
2150 {
2151 static char s_fp_e[32];
2152
2153 switch (fe) {
2154 case 0: return "Unused";
2155 case 1: return "Needed";
2156 default:
2157 snprintf(s_fp_e, sizeof(s_fp_e), "Unknown (%ju)",
2158 (uintmax_t) fe);
2159 return (s_fp_e);
2160 }
2161 }
2162
2163 static const char *
aeabi_fp_user_exceptions(uint64_t fu)2164 aeabi_fp_user_exceptions(uint64_t fu)
2165 {
2166 static char s_fp_u[32];
2167
2168 switch (fu) {
2169 case 0: return "Unused";
2170 case 1: return "Needed";
2171 default:
2172 snprintf(s_fp_u, sizeof(s_fp_u), "Unknown (%ju)",
2173 (uintmax_t) fu);
2174 return (s_fp_u);
2175 }
2176 }
2177
2178 static const char *
aeabi_fp_number_model(uint64_t fn)2179 aeabi_fp_number_model(uint64_t fn)
2180 {
2181 static char s_fp_n[32];
2182
2183 switch (fn) {
2184 case 0: return "Unused";
2185 case 1: return "IEEE 754 normal";
2186 case 2: return "RTABI";
2187 case 3: return "IEEE 754";
2188 default:
2189 snprintf(s_fp_n, sizeof(s_fp_n), "Unknown (%ju)",
2190 (uintmax_t) fn);
2191 return (s_fp_n);
2192 }
2193 }
2194
2195 static const char *
aeabi_fp_16bit_format(uint64_t fp16)2196 aeabi_fp_16bit_format(uint64_t fp16)
2197 {
2198 static char s_fp_16[64];
2199
2200 switch (fp16) {
2201 case 0: return "None";
2202 case 1: return "IEEE 754";
2203 case 2: return "VFPv3/Advanced SIMD (alternative format)";
2204 default:
2205 snprintf(s_fp_16, sizeof(s_fp_16), "Unknown (%ju)",
2206 (uintmax_t) fp16);
2207 return (s_fp_16);
2208 }
2209 }
2210
2211 static const char *
aeabi_mpext(uint64_t mp)2212 aeabi_mpext(uint64_t mp)
2213 {
2214 static char s_mp[32];
2215
2216 switch (mp) {
2217 case 0: return "Not allowed";
2218 case 1: return "Allowed";
2219 default:
2220 snprintf(s_mp, sizeof(s_mp), "Unknown (%ju)",
2221 (uintmax_t) mp);
2222 return (s_mp);
2223 }
2224 }
2225
2226 static const char *
aeabi_div(uint64_t du)2227 aeabi_div(uint64_t du)
2228 {
2229 static char s_du[32];
2230
2231 switch (du) {
2232 case 0: return "Yes (V7-R/V7-M)";
2233 case 1: return "No";
2234 case 2: return "Yes (V7-A)";
2235 default:
2236 snprintf(s_du, sizeof(s_du), "Unknown (%ju)",
2237 (uintmax_t) du);
2238 return (s_du);
2239 }
2240 }
2241
2242 static const char *
aeabi_t2ee(uint64_t t2ee)2243 aeabi_t2ee(uint64_t t2ee)
2244 {
2245 static char s_t2ee[32];
2246
2247 switch (t2ee) {
2248 case 0: return "Not allowed";
2249 case 1: return "Allowed";
2250 default:
2251 snprintf(s_t2ee, sizeof(s_t2ee), "Unknown(%ju)",
2252 (uintmax_t) t2ee);
2253 return (s_t2ee);
2254 }
2255
2256 }
2257
2258 static const char *
aeabi_hardfp(uint64_t hfp)2259 aeabi_hardfp(uint64_t hfp)
2260 {
2261 static char s_hfp[32];
2262
2263 switch (hfp) {
2264 case 0: return "Tag_FP_arch";
2265 case 1: return "only SP";
2266 case 2: return "only DP";
2267 case 3: return "both SP and DP";
2268 default:
2269 snprintf(s_hfp, sizeof(s_hfp), "Unknown (%ju)",
2270 (uintmax_t) hfp);
2271 return (s_hfp);
2272 }
2273 }
2274
2275 static const char *
aeabi_vfp_args(uint64_t va)2276 aeabi_vfp_args(uint64_t va)
2277 {
2278 static char s_va[32];
2279
2280 switch (va) {
2281 case 0: return "AAPCS (base variant)";
2282 case 1: return "AAPCS (VFP variant)";
2283 case 2: return "toolchain-specific";
2284 default:
2285 snprintf(s_va, sizeof(s_va), "Unknown (%ju)", (uintmax_t) va);
2286 return (s_va);
2287 }
2288 }
2289
2290 static const char *
aeabi_wmmx_args(uint64_t wa)2291 aeabi_wmmx_args(uint64_t wa)
2292 {
2293 static char s_wa[32];
2294
2295 switch (wa) {
2296 case 0: return "AAPCS (base variant)";
2297 case 1: return "Intel WMMX";
2298 case 2: return "toolchain-specific";
2299 default:
2300 snprintf(s_wa, sizeof(s_wa), "Unknown(%ju)", (uintmax_t) wa);
2301 return (s_wa);
2302 }
2303 }
2304
2305 static const char *
aeabi_unaligned_access(uint64_t ua)2306 aeabi_unaligned_access(uint64_t ua)
2307 {
2308 static char s_ua[32];
2309
2310 switch (ua) {
2311 case 0: return "Not allowed";
2312 case 1: return "Allowed";
2313 default:
2314 snprintf(s_ua, sizeof(s_ua), "Unknown(%ju)", (uintmax_t) ua);
2315 return (s_ua);
2316 }
2317 }
2318
2319 static const char *
aeabi_fp_hpext(uint64_t fh)2320 aeabi_fp_hpext(uint64_t fh)
2321 {
2322 static char s_fh[32];
2323
2324 switch (fh) {
2325 case 0: return "Not allowed";
2326 case 1: return "Allowed";
2327 default:
2328 snprintf(s_fh, sizeof(s_fh), "Unknown(%ju)", (uintmax_t) fh);
2329 return (s_fh);
2330 }
2331 }
2332
2333 static const char *
aeabi_optm_goal(uint64_t og)2334 aeabi_optm_goal(uint64_t og)
2335 {
2336 static char s_og[32];
2337
2338 switch (og) {
2339 case 0: return "None";
2340 case 1: return "Speed";
2341 case 2: return "Speed aggressive";
2342 case 3: return "Space";
2343 case 4: return "Space aggressive";
2344 case 5: return "Debugging";
2345 case 6: return "Best Debugging";
2346 default:
2347 snprintf(s_og, sizeof(s_og), "Unknown(%ju)", (uintmax_t) og);
2348 return (s_og);
2349 }
2350 }
2351
2352 static const char *
aeabi_fp_optm_goal(uint64_t fog)2353 aeabi_fp_optm_goal(uint64_t fog)
2354 {
2355 static char s_fog[32];
2356
2357 switch (fog) {
2358 case 0: return "None";
2359 case 1: return "Speed";
2360 case 2: return "Speed aggressive";
2361 case 3: return "Space";
2362 case 4: return "Space aggressive";
2363 case 5: return "Accurary";
2364 case 6: return "Best Accurary";
2365 default:
2366 snprintf(s_fog, sizeof(s_fog), "Unknown(%ju)",
2367 (uintmax_t) fog);
2368 return (s_fog);
2369 }
2370 }
2371
2372 static const char *
aeabi_virtual(uint64_t vt)2373 aeabi_virtual(uint64_t vt)
2374 {
2375 static char s_virtual[64];
2376
2377 switch (vt) {
2378 case 0: return "No";
2379 case 1: return "TrustZone";
2380 case 2: return "Virtualization extension";
2381 case 3: return "TrustZone and virtualization extension";
2382 default:
2383 snprintf(s_virtual, sizeof(s_virtual), "Unknown(%ju)",
2384 (uintmax_t) vt);
2385 return (s_virtual);
2386 }
2387 }
2388
2389 static struct {
2390 uint64_t tag;
2391 const char *s_tag;
2392 const char *(*get_desc)(uint64_t val);
2393 } aeabi_tags[] = {
2394 {4, "Tag_CPU_raw_name", NULL},
2395 {5, "Tag_CPU_name", NULL},
2396 {6, "Tag_CPU_arch", aeabi_cpu_arch},
2397 {7, "Tag_CPU_arch_profile", aeabi_cpu_arch_profile},
2398 {8, "Tag_ARM_ISA_use", aeabi_arm_isa},
2399 {9, "Tag_THUMB_ISA_use", aeabi_thumb_isa},
2400 {10, "Tag_FP_arch", aeabi_fp_arch},
2401 {11, "Tag_WMMX_arch", aeabi_wmmx_arch},
2402 {12, "Tag_Advanced_SIMD_arch", aeabi_adv_simd_arch},
2403 {13, "Tag_PCS_config", aeabi_pcs_config},
2404 {14, "Tag_ABI_PCS_R9_use", aeabi_pcs_r9},
2405 {15, "Tag_ABI_PCS_RW_data", aeabi_pcs_rw},
2406 {16, "Tag_ABI_PCS_RO_data", aeabi_pcs_ro},
2407 {17, "Tag_ABI_PCS_GOT_use", aeabi_pcs_got},
2408 {18, "Tag_ABI_PCS_wchar_t", aeabi_pcs_wchar_t},
2409 {19, "Tag_ABI_FP_rounding", aeabi_fp_rounding},
2410 {20, "Tag_ABI_FP_denormal", aeabi_fp_denormal},
2411 {21, "Tag_ABI_FP_exceptions", aeabi_fp_exceptions},
2412 {22, "Tag_ABI_FP_user_exceptions", aeabi_fp_user_exceptions},
2413 {23, "Tag_ABI_FP_number_model", aeabi_fp_number_model},
2414 {24, "Tag_ABI_align_needed", aeabi_align_needed},
2415 {25, "Tag_ABI_align_preserved", aeabi_align_preserved},
2416 {26, "Tag_ABI_enum_size", aeabi_enum_size},
2417 {27, "Tag_ABI_HardFP_use", aeabi_hardfp},
2418 {28, "Tag_ABI_VFP_args", aeabi_vfp_args},
2419 {29, "Tag_ABI_WMMX_args", aeabi_wmmx_args},
2420 {30, "Tag_ABI_optimization_goals", aeabi_optm_goal},
2421 {31, "Tag_ABI_FP_optimization_goals", aeabi_fp_optm_goal},
2422 {32, "Tag_compatibility", NULL},
2423 {34, "Tag_CPU_unaligned_access", aeabi_unaligned_access},
2424 {36, "Tag_FP_HP_extension", aeabi_fp_hpext},
2425 {38, "Tag_ABI_FP_16bit_format", aeabi_fp_16bit_format},
2426 {42, "Tag_MPextension_use", aeabi_mpext},
2427 {44, "Tag_DIV_use", aeabi_div},
2428 {64, "Tag_nodefaults", NULL},
2429 {65, "Tag_also_compatible_with", NULL},
2430 {66, "Tag_T2EE_use", aeabi_t2ee},
2431 {67, "Tag_conformance", NULL},
2432 {68, "Tag_Virtualization_use", aeabi_virtual},
2433 {70, "Tag_MPextension_use", aeabi_mpext},
2434 };
2435
2436 static const char *
mips_abi_fp(uint64_t fp)2437 mips_abi_fp(uint64_t fp)
2438 {
2439 static char s_mips_abi_fp[64];
2440
2441 switch (fp) {
2442 case 0: return "N/A";
2443 case 1: return "Hard float (double precision)";
2444 case 2: return "Hard float (single precision)";
2445 case 3: return "Soft float";
2446 case 4: return "64-bit float (-mips32r2 -mfp64)";
2447 default:
2448 snprintf(s_mips_abi_fp, sizeof(s_mips_abi_fp), "Unknown(%ju)",
2449 (uintmax_t) fp);
2450 return (s_mips_abi_fp);
2451 }
2452 }
2453
2454 static const char *
ppc_abi_fp(uint64_t fp)2455 ppc_abi_fp(uint64_t fp)
2456 {
2457 static char s_ppc_abi_fp[64];
2458
2459 switch (fp) {
2460 case 0: return "N/A";
2461 case 1: return "Hard float (double precision)";
2462 case 2: return "Soft float";
2463 case 3: return "Hard float (single precision)";
2464 default:
2465 snprintf(s_ppc_abi_fp, sizeof(s_ppc_abi_fp), "Unknown(%ju)",
2466 (uintmax_t) fp);
2467 return (s_ppc_abi_fp);
2468 }
2469 }
2470
2471 static const char *
ppc_abi_vector(uint64_t vec)2472 ppc_abi_vector(uint64_t vec)
2473 {
2474 static char s_vec[64];
2475
2476 switch (vec) {
2477 case 0: return "N/A";
2478 case 1: return "Generic purpose registers";
2479 case 2: return "AltiVec registers";
2480 case 3: return "SPE registers";
2481 default:
2482 snprintf(s_vec, sizeof(s_vec), "Unknown(%ju)", (uintmax_t) vec);
2483 return (s_vec);
2484 }
2485 }
2486
2487 static const char *
dwarf_reg(unsigned int mach,unsigned int reg)2488 dwarf_reg(unsigned int mach, unsigned int reg)
2489 {
2490
2491 switch (mach) {
2492 case EM_386:
2493 case EM_IAMCU:
2494 switch (reg) {
2495 case 0: return "eax";
2496 case 1: return "ecx";
2497 case 2: return "edx";
2498 case 3: return "ebx";
2499 case 4: return "esp";
2500 case 5: return "ebp";
2501 case 6: return "esi";
2502 case 7: return "edi";
2503 case 8: return "eip";
2504 case 9: return "eflags";
2505 case 11: return "st0";
2506 case 12: return "st1";
2507 case 13: return "st2";
2508 case 14: return "st3";
2509 case 15: return "st4";
2510 case 16: return "st5";
2511 case 17: return "st6";
2512 case 18: return "st7";
2513 case 21: return "xmm0";
2514 case 22: return "xmm1";
2515 case 23: return "xmm2";
2516 case 24: return "xmm3";
2517 case 25: return "xmm4";
2518 case 26: return "xmm5";
2519 case 27: return "xmm6";
2520 case 28: return "xmm7";
2521 case 29: return "mm0";
2522 case 30: return "mm1";
2523 case 31: return "mm2";
2524 case 32: return "mm3";
2525 case 33: return "mm4";
2526 case 34: return "mm5";
2527 case 35: return "mm6";
2528 case 36: return "mm7";
2529 case 37: return "fcw";
2530 case 38: return "fsw";
2531 case 39: return "mxcsr";
2532 case 40: return "es";
2533 case 41: return "cs";
2534 case 42: return "ss";
2535 case 43: return "ds";
2536 case 44: return "fs";
2537 case 45: return "gs";
2538 case 48: return "tr";
2539 case 49: return "ldtr";
2540 default: return (NULL);
2541 }
2542 case EM_X86_64:
2543 switch (reg) {
2544 case 0: return "rax";
2545 case 1: return "rdx";
2546 case 2: return "rcx";
2547 case 3: return "rbx";
2548 case 4: return "rsi";
2549 case 5: return "rdi";
2550 case 6: return "rbp";
2551 case 7: return "rsp";
2552 case 16: return "rip";
2553 case 17: return "xmm0";
2554 case 18: return "xmm1";
2555 case 19: return "xmm2";
2556 case 20: return "xmm3";
2557 case 21: return "xmm4";
2558 case 22: return "xmm5";
2559 case 23: return "xmm6";
2560 case 24: return "xmm7";
2561 case 25: return "xmm8";
2562 case 26: return "xmm9";
2563 case 27: return "xmm10";
2564 case 28: return "xmm11";
2565 case 29: return "xmm12";
2566 case 30: return "xmm13";
2567 case 31: return "xmm14";
2568 case 32: return "xmm15";
2569 case 33: return "st0";
2570 case 34: return "st1";
2571 case 35: return "st2";
2572 case 36: return "st3";
2573 case 37: return "st4";
2574 case 38: return "st5";
2575 case 39: return "st6";
2576 case 40: return "st7";
2577 case 41: return "mm0";
2578 case 42: return "mm1";
2579 case 43: return "mm2";
2580 case 44: return "mm3";
2581 case 45: return "mm4";
2582 case 46: return "mm5";
2583 case 47: return "mm6";
2584 case 48: return "mm7";
2585 case 49: return "rflags";
2586 case 50: return "es";
2587 case 51: return "cs";
2588 case 52: return "ss";
2589 case 53: return "ds";
2590 case 54: return "fs";
2591 case 55: return "gs";
2592 case 58: return "fs.base";
2593 case 59: return "gs.base";
2594 case 62: return "tr";
2595 case 63: return "ldtr";
2596 case 64: return "mxcsr";
2597 case 65: return "fcw";
2598 case 66: return "fsw";
2599 default: return (NULL);
2600 }
2601 default:
2602 return (NULL);
2603 }
2604 }
2605
2606 static void
dump_ehdr(struct readelf * re)2607 dump_ehdr(struct readelf *re)
2608 {
2609 size_t shnum, shstrndx;
2610 int i;
2611
2612 printf("ELF Header:\n");
2613
2614 /* e_ident[]. */
2615 printf(" Magic: ");
2616 for (i = 0; i < EI_NIDENT; i++)
2617 printf("%.2x ", re->ehdr.e_ident[i]);
2618 putchar('\n');
2619
2620 /* EI_CLASS. */
2621 printf("%-37s%s\n", " Class:", elf_class(re->ehdr.e_ident[EI_CLASS]));
2622
2623 /* EI_DATA. */
2624 printf("%-37s%s\n", " Data:", elf_endian(re->ehdr.e_ident[EI_DATA]));
2625
2626 /* EI_VERSION. */
2627 printf("%-37s%d %s\n", " Version:", re->ehdr.e_ident[EI_VERSION],
2628 elf_ver(re->ehdr.e_ident[EI_VERSION]));
2629
2630 /* EI_OSABI. */
2631 printf("%-37s%s\n", " OS/ABI:", elf_osabi(re->ehdr.e_ident[EI_OSABI]));
2632
2633 /* EI_ABIVERSION. */
2634 printf("%-37s%d\n", " ABI Version:", re->ehdr.e_ident[EI_ABIVERSION]);
2635
2636 /* e_type. */
2637 printf("%-37s%s\n", " Type:", elf_type(re->ehdr.e_type));
2638
2639 /* e_machine. */
2640 printf("%-37s%s\n", " Machine:", elf_machine(re->ehdr.e_machine));
2641
2642 /* e_version. */
2643 printf("%-37s%#x\n", " Version:", re->ehdr.e_version);
2644
2645 /* e_entry. */
2646 printf("%-37s%#jx\n", " Entry point address:",
2647 (uintmax_t)re->ehdr.e_entry);
2648
2649 /* e_phoff. */
2650 printf("%-37s%ju (bytes into file)\n", " Start of program headers:",
2651 (uintmax_t)re->ehdr.e_phoff);
2652
2653 /* e_shoff. */
2654 printf("%-37s%ju (bytes into file)\n", " Start of section headers:",
2655 (uintmax_t)re->ehdr.e_shoff);
2656
2657 /* e_flags. */
2658 printf("%-37s%#x", " Flags:", re->ehdr.e_flags);
2659 dump_eflags(re, re->ehdr.e_flags);
2660 putchar('\n');
2661
2662 /* e_ehsize. */
2663 printf("%-37s%u (bytes)\n", " Size of this header:",
2664 re->ehdr.e_ehsize);
2665
2666 /* e_phentsize. */
2667 printf("%-37s%u (bytes)\n", " Size of program headers:",
2668 re->ehdr.e_phentsize);
2669
2670 /* e_phnum. */
2671 printf("%-37s%u\n", " Number of program headers:", re->ehdr.e_phnum);
2672
2673 /* e_shentsize. */
2674 printf("%-37s%u (bytes)\n", " Size of section headers:",
2675 re->ehdr.e_shentsize);
2676
2677 /* e_shnum. */
2678 printf("%-37s%u", " Number of section headers:", re->ehdr.e_shnum);
2679 if (re->ehdr.e_shnum == SHN_UNDEF) {
2680 /* Extended section numbering is in use. */
2681 if (elf_getshnum(re->elf, &shnum))
2682 printf(" (%ju)", (uintmax_t)shnum);
2683 }
2684 putchar('\n');
2685
2686 /* e_shstrndx. */
2687 printf("%-37s%u", " Section header string table index:",
2688 re->ehdr.e_shstrndx);
2689 if (re->ehdr.e_shstrndx == SHN_XINDEX) {
2690 /* Extended section numbering is in use. */
2691 if (elf_getshstrndx(re->elf, &shstrndx))
2692 printf(" (%ju)", (uintmax_t)shstrndx);
2693 }
2694 putchar('\n');
2695 }
2696
2697 static void
dump_eflags(struct readelf * re,uint64_t e_flags)2698 dump_eflags(struct readelf *re, uint64_t e_flags)
2699 {
2700 struct eflags_desc *edesc;
2701 int arm_eabi;
2702
2703 edesc = NULL;
2704 switch (re->ehdr.e_machine) {
2705 case EM_ARM:
2706 arm_eabi = (e_flags & EF_ARM_EABIMASK) >> 24;
2707 if (arm_eabi == 0)
2708 printf(", GNU EABI");
2709 else if (arm_eabi <= 5)
2710 printf(", Version%d EABI", arm_eabi);
2711 edesc = arm_eflags_desc;
2712 break;
2713 case EM_MIPS:
2714 case EM_MIPS_RS3_LE:
2715 switch ((e_flags & EF_MIPS_ARCH) >> 28) {
2716 case 0: printf(", mips1"); break;
2717 case 1: printf(", mips2"); break;
2718 case 2: printf(", mips3"); break;
2719 case 3: printf(", mips4"); break;
2720 case 4: printf(", mips5"); break;
2721 case 5: printf(", mips32"); break;
2722 case 6: printf(", mips64"); break;
2723 case 7: printf(", mips32r2"); break;
2724 case 8: printf(", mips64r2"); break;
2725 default: break;
2726 }
2727 switch ((e_flags & 0x00FF0000) >> 16) {
2728 case 0x81: printf(", 3900"); break;
2729 case 0x82: printf(", 4010"); break;
2730 case 0x83: printf(", 4100"); break;
2731 case 0x85: printf(", 4650"); break;
2732 case 0x87: printf(", 4120"); break;
2733 case 0x88: printf(", 4111"); break;
2734 case 0x8a: printf(", sb1"); break;
2735 case 0x8b: printf(", octeon"); break;
2736 case 0x8c: printf(", xlr"); break;
2737 case 0x91: printf(", 5400"); break;
2738 case 0x98: printf(", 5500"); break;
2739 case 0x99: printf(", 9000"); break;
2740 case 0xa0: printf(", loongson-2e"); break;
2741 case 0xa1: printf(", loongson-2f"); break;
2742 default: break;
2743 }
2744 switch ((e_flags & 0x0000F000) >> 12) {
2745 case 1: printf(", o32"); break;
2746 case 2: printf(", o64"); break;
2747 case 3: printf(", eabi32"); break;
2748 case 4: printf(", eabi64"); break;
2749 default: break;
2750 }
2751 edesc = mips_eflags_desc;
2752 break;
2753 case EM_PPC:
2754 case EM_PPC64:
2755 edesc = powerpc_eflags_desc;
2756 break;
2757 case EM_SPARC:
2758 case EM_SPARC32PLUS:
2759 case EM_SPARCV9:
2760 switch ((e_flags & EF_SPARCV9_MM)) {
2761 case EF_SPARCV9_TSO: printf(", tso"); break;
2762 case EF_SPARCV9_PSO: printf(", pso"); break;
2763 case EF_SPARCV9_MM: printf(", rmo"); break;
2764 default: break;
2765 }
2766 edesc = sparc_eflags_desc;
2767 break;
2768 default:
2769 break;
2770 }
2771
2772 if (edesc != NULL) {
2773 while (edesc->desc != NULL) {
2774 if (e_flags & edesc->flag)
2775 printf(", %s", edesc->desc);
2776 edesc++;
2777 }
2778 }
2779 }
2780
2781 static void
dump_phdr(struct readelf * re)2782 dump_phdr(struct readelf *re)
2783 {
2784 const char *rawfile;
2785 GElf_Phdr phdr;
2786 size_t phnum, size;
2787 int i, j;
2788
2789 #define PH_HDR "Type", "Offset", "VirtAddr", "PhysAddr", "FileSiz", \
2790 "MemSiz", "Flg", "Align"
2791 #define PH_CT phdr_type(phdr.p_type), (uintmax_t)phdr.p_offset, \
2792 (uintmax_t)phdr.p_vaddr, (uintmax_t)phdr.p_paddr, \
2793 (uintmax_t)phdr.p_filesz, (uintmax_t)phdr.p_memsz, \
2794 phdr.p_flags & PF_R ? 'R' : ' ', \
2795 phdr.p_flags & PF_W ? 'W' : ' ', \
2796 phdr.p_flags & PF_X ? 'E' : ' ', \
2797 (uintmax_t)phdr.p_align
2798
2799 if (elf_getphnum(re->elf, &phnum) == 0) {
2800 warnx("elf_getphnum failed: %s", elf_errmsg(-1));
2801 return;
2802 }
2803 if (phnum == 0) {
2804 printf("\nThere are no program headers in this file.\n");
2805 return;
2806 }
2807
2808 printf("\nElf file type is %s", elf_type(re->ehdr.e_type));
2809 printf("\nEntry point 0x%jx\n", (uintmax_t)re->ehdr.e_entry);
2810 printf("There are %ju program headers, starting at offset %ju\n",
2811 (uintmax_t)phnum, (uintmax_t)re->ehdr.e_phoff);
2812
2813 /* Dump program headers. */
2814 printf("\nProgram Headers:\n");
2815 if (re->ec == ELFCLASS32)
2816 printf(" %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n", PH_HDR);
2817 else if (re->options & RE_WW)
2818 printf(" %-15s%-9s%-19s%-19s%-9s%-9s%-4s%s\n", PH_HDR);
2819 else
2820 printf(" %-15s%-19s%-19s%s\n %-19s%-20s"
2821 "%-7s%s\n", PH_HDR);
2822 for (i = 0; (size_t) i < phnum; i++) {
2823 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) {
2824 warnx("gelf_getphdr failed: %s", elf_errmsg(-1));
2825 continue;
2826 }
2827 /* TODO: Add arch-specific segment type dump. */
2828 if (re->ec == ELFCLASS32)
2829 printf(" %-14.14s 0x%6.6jx 0x%8.8jx 0x%8.8jx "
2830 "0x%5.5jx 0x%5.5jx %c%c%c %#jx\n", PH_CT);
2831 else if (re->options & RE_WW)
2832 printf(" %-14.14s 0x%6.6jx 0x%16.16jx 0x%16.16jx "
2833 "0x%6.6jx 0x%6.6jx %c%c%c %#jx\n", PH_CT);
2834 else
2835 printf(" %-14.14s 0x%16.16jx 0x%16.16jx 0x%16.16jx\n"
2836 " 0x%16.16jx 0x%16.16jx %c%c%c"
2837 " %#jx\n", PH_CT);
2838 if (phdr.p_type == PT_INTERP) {
2839 if ((rawfile = elf_rawfile(re->elf, &size)) == NULL) {
2840 warnx("elf_rawfile failed: %s", elf_errmsg(-1));
2841 continue;
2842 }
2843 if (phdr.p_offset >= size) {
2844 warnx("invalid program header offset");
2845 continue;
2846 }
2847 printf(" [Requesting program interpreter: %s]\n",
2848 rawfile + phdr.p_offset);
2849 }
2850 }
2851
2852 /* Dump section to segment mapping. */
2853 if (re->shnum == 0)
2854 return;
2855 printf("\n Section to Segment mapping:\n");
2856 printf(" Segment Sections...\n");
2857 for (i = 0; (size_t)i < phnum; i++) {
2858 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) {
2859 warnx("gelf_getphdr failed: %s", elf_errmsg(-1));
2860 continue;
2861 }
2862 printf(" %2.2d ", i);
2863 /* skip NULL section. */
2864 for (j = 1; (size_t)j < re->shnum; j++)
2865 if (re->sl[j].addr >= phdr.p_vaddr &&
2866 re->sl[j].addr + re->sl[j].sz <=
2867 phdr.p_vaddr + phdr.p_memsz)
2868 printf("%s ", re->sl[j].name);
2869 printf("\n");
2870 }
2871 #undef PH_HDR
2872 #undef PH_CT
2873 }
2874
2875 static char *
section_flags(struct readelf * re,struct section * s)2876 section_flags(struct readelf *re, struct section *s)
2877 {
2878 #define BUF_SZ 256
2879 static char buf[BUF_SZ];
2880 int i, p, nb;
2881
2882 p = 0;
2883 nb = re->ec == ELFCLASS32 ? 8 : 16;
2884 if (re->options & RE_T) {
2885 snprintf(buf, BUF_SZ, "[%*.*jx]: ", nb, nb,
2886 (uintmax_t)s->flags);
2887 p += nb + 4;
2888 }
2889 for (i = 0; section_flag[i].ln != NULL; i++) {
2890 if ((s->flags & section_flag[i].value) == 0)
2891 continue;
2892 if (re->options & RE_T) {
2893 snprintf(&buf[p], BUF_SZ - p, "%s, ",
2894 section_flag[i].ln);
2895 p += strlen(section_flag[i].ln) + 2;
2896 } else
2897 buf[p++] = section_flag[i].sn;
2898 }
2899 if (re->options & RE_T && p > nb + 4)
2900 p -= 2;
2901 buf[p] = '\0';
2902
2903 return (buf);
2904 }
2905
2906 static void
dump_shdr(struct readelf * re)2907 dump_shdr(struct readelf *re)
2908 {
2909 struct section *s;
2910 int i;
2911
2912 #define S_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \
2913 "Flg", "Lk", "Inf", "Al"
2914 #define S_HDRL "[Nr] Name", "Type", "Address", "Offset", "Size", \
2915 "EntSize", "Flags", "Link", "Info", "Align"
2916 #define ST_HDR "[Nr] Name", "Type", "Addr", "Off", "Size", "ES", \
2917 "Lk", "Inf", "Al", "Flags"
2918 #define ST_HDRL "[Nr] Name", "Type", "Address", "Offset", "Link", \
2919 "Size", "EntSize", "Info", "Align", "Flags"
2920 #define S_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \
2921 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\
2922 (uintmax_t)s->entsize, section_flags(re, s), \
2923 s->link, s->info, (uintmax_t)s->align
2924 #define ST_CT i, s->name, section_type(re->ehdr.e_machine, s->type), \
2925 (uintmax_t)s->addr, (uintmax_t)s->off, (uintmax_t)s->sz,\
2926 (uintmax_t)s->entsize, s->link, s->info, \
2927 (uintmax_t)s->align, section_flags(re, s)
2928 #define ST_CTL i, s->name, section_type(re->ehdr.e_machine, s->type), \
2929 (uintmax_t)s->addr, (uintmax_t)s->off, s->link, \
2930 (uintmax_t)s->sz, (uintmax_t)s->entsize, s->info, \
2931 (uintmax_t)s->align, section_flags(re, s)
2932
2933 if (re->shnum == 0) {
2934 printf("\nThere are no sections in this file.\n");
2935 return;
2936 }
2937 printf("There are %ju section headers, starting at offset 0x%jx:\n",
2938 (uintmax_t)re->shnum, (uintmax_t)re->ehdr.e_shoff);
2939 printf("\nSection Headers:\n");
2940 if (re->ec == ELFCLASS32) {
2941 if (re->options & RE_T)
2942 printf(" %s\n %-16s%-9s%-7s%-7s%-5s%-3s%-4s%s\n"
2943 "%12s\n", ST_HDR);
2944 else
2945 printf(" %-23s%-16s%-9s%-7s%-7s%-3s%-4s%-3s%-4s%s\n",
2946 S_HDR);
2947 } else if (re->options & RE_WW) {
2948 if (re->options & RE_T)
2949 printf(" %s\n %-16s%-17s%-7s%-7s%-5s%-3s%-4s%s\n"
2950 "%12s\n", ST_HDR);
2951 else
2952 printf(" %-23s%-16s%-17s%-7s%-7s%-3s%-4s%-3s%-4s%s\n",
2953 S_HDR);
2954 } else {
2955 if (re->options & RE_T)
2956 printf(" %s\n %-18s%-17s%-18s%s\n %-18s"
2957 "%-17s%-18s%s\n%12s\n", ST_HDRL);
2958 else
2959 printf(" %-23s%-17s%-18s%s\n %-18s%-17s%-7s%"
2960 "-6s%-6s%s\n", S_HDRL);
2961 }
2962 for (i = 0; (size_t)i < re->shnum; i++) {
2963 s = &re->sl[i];
2964 if (re->ec == ELFCLASS32) {
2965 if (re->options & RE_T)
2966 printf(" [%2d] %s\n %-15.15s %8.8jx"
2967 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n"
2968 " %s\n", ST_CT);
2969 else
2970 printf(" [%2d] %-17.17s %-15.15s %8.8jx"
2971 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n",
2972 S_CT);
2973 } else if (re->options & RE_WW) {
2974 if (re->options & RE_T)
2975 printf(" [%2d] %s\n %-15.15s %16.16jx"
2976 " %6.6jx %6.6jx %2.2jx %2u %3u %2ju\n"
2977 " %s\n", ST_CT);
2978 else
2979 printf(" [%2d] %-17.17s %-15.15s %16.16jx"
2980 " %6.6jx %6.6jx %2.2jx %3s %2u %3u %2ju\n",
2981 S_CT);
2982 } else {
2983 if (re->options & RE_T)
2984 printf(" [%2d] %s\n %-15.15s %16.16jx"
2985 " %16.16jx %u\n %16.16jx %16.16jx"
2986 " %-16u %ju\n %s\n", ST_CTL);
2987 else
2988 printf(" [%2d] %-17.17s %-15.15s %16.16jx"
2989 " %8.8jx\n %16.16jx %16.16jx "
2990 "%3s %2u %3u %ju\n", S_CT);
2991 }
2992 }
2993 if ((re->options & RE_T) == 0)
2994 printf("Key to Flags:\n W (write), A (alloc),"
2995 " X (execute), M (merge), S (strings)\n"
2996 " I (info), L (link order), G (group), x (unknown)\n"
2997 " O (extra OS processing required)"
2998 " o (OS specific), p (processor specific)\n");
2999
3000 #undef S_HDR
3001 #undef S_HDRL
3002 #undef ST_HDR
3003 #undef ST_HDRL
3004 #undef S_CT
3005 #undef ST_CT
3006 #undef ST_CTL
3007 }
3008
3009 /*
3010 * Return number of entries in the given section. We'd prefer ent_count be a
3011 * size_t *, but libelf APIs already use int for section indices.
3012 */
3013 static int
get_ent_count(struct section * s,int * ent_count)3014 get_ent_count(struct section *s, int *ent_count)
3015 {
3016 if (s->entsize == 0) {
3017 warnx("section %s has entry size 0", s->name);
3018 return (0);
3019 } else if (s->sz / s->entsize > INT_MAX) {
3020 warnx("section %s has invalid section count", s->name);
3021 return (0);
3022 }
3023 *ent_count = (int)(s->sz / s->entsize);
3024 return (1);
3025 }
3026
3027 static void
dump_dynamic(struct readelf * re)3028 dump_dynamic(struct readelf *re)
3029 {
3030 GElf_Dyn dyn;
3031 Elf_Data *d;
3032 struct section *s;
3033 int elferr, i, is_dynamic, j, jmax, nentries;
3034
3035 is_dynamic = 0;
3036
3037 for (i = 0; (size_t)i < re->shnum; i++) {
3038 s = &re->sl[i];
3039 if (s->type != SHT_DYNAMIC)
3040 continue;
3041 (void) elf_errno();
3042 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3043 elferr = elf_errno();
3044 if (elferr != 0)
3045 warnx("elf_getdata failed: %s", elf_errmsg(-1));
3046 continue;
3047 }
3048 if (d->d_size <= 0)
3049 continue;
3050
3051 is_dynamic = 1;
3052
3053 /* Determine the actual number of table entries. */
3054 nentries = 0;
3055 if (!get_ent_count(s, &jmax))
3056 continue;
3057 for (j = 0; j < jmax; j++) {
3058 if (gelf_getdyn(d, j, &dyn) != &dyn) {
3059 warnx("gelf_getdyn failed: %s",
3060 elf_errmsg(-1));
3061 continue;
3062 }
3063 nentries ++;
3064 if (dyn.d_tag == DT_NULL)
3065 break;
3066 }
3067
3068 printf("\nDynamic section at offset 0x%jx", (uintmax_t)s->off);
3069 printf(" contains %u entries:\n", nentries);
3070
3071 if (re->ec == ELFCLASS32)
3072 printf("%5s%12s%28s\n", "Tag", "Type", "Name/Value");
3073 else
3074 printf("%5s%20s%28s\n", "Tag", "Type", "Name/Value");
3075
3076 for (j = 0; j < nentries; j++) {
3077 if (gelf_getdyn(d, j, &dyn) != &dyn)
3078 continue;
3079 /* Dump dynamic entry type. */
3080 if (re->ec == ELFCLASS32)
3081 printf(" 0x%8.8jx", (uintmax_t)dyn.d_tag);
3082 else
3083 printf(" 0x%16.16jx", (uintmax_t)dyn.d_tag);
3084 printf(" %-20s", dt_type(re->ehdr.e_machine,
3085 dyn.d_tag));
3086 /* Dump dynamic entry value. */
3087 dump_dyn_val(re, &dyn, s->link);
3088 }
3089 }
3090
3091 if (!is_dynamic)
3092 printf("\nThere is no dynamic section in this file.\n");
3093 }
3094
3095 static char *
timestamp(time_t ti)3096 timestamp(time_t ti)
3097 {
3098 static char ts[32];
3099 struct tm *t;
3100
3101 t = gmtime(&ti);
3102 snprintf(ts, sizeof(ts), "%04d-%02d-%02dT%02d:%02d:%02d",
3103 t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour,
3104 t->tm_min, t->tm_sec);
3105
3106 return (ts);
3107 }
3108
3109 static const char *
dyn_str(struct readelf * re,uint32_t stab,uint64_t d_val)3110 dyn_str(struct readelf *re, uint32_t stab, uint64_t d_val)
3111 {
3112 const char *name;
3113
3114 if (stab == SHN_UNDEF)
3115 name = "ERROR";
3116 else if ((name = elf_strptr(re->elf, stab, d_val)) == NULL) {
3117 (void) elf_errno(); /* clear error */
3118 name = "ERROR";
3119 }
3120
3121 return (name);
3122 }
3123
3124 static void
dump_arch_dyn_val(struct readelf * re,GElf_Dyn * dyn,uint32_t stab)3125 dump_arch_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab)
3126 {
3127 const char *name;
3128
3129 switch (re->ehdr.e_machine) {
3130 case EM_MIPS:
3131 case EM_MIPS_RS3_LE:
3132 switch (dyn->d_tag) {
3133 case DT_MIPS_RLD_VERSION:
3134 case DT_MIPS_LOCAL_GOTNO:
3135 case DT_MIPS_CONFLICTNO:
3136 case DT_MIPS_LIBLISTNO:
3137 case DT_MIPS_SYMTABNO:
3138 case DT_MIPS_UNREFEXTNO:
3139 case DT_MIPS_GOTSYM:
3140 case DT_MIPS_HIPAGENO:
3141 case DT_MIPS_DELTA_CLASS_NO:
3142 case DT_MIPS_DELTA_INSTANCE_NO:
3143 case DT_MIPS_DELTA_RELOC_NO:
3144 case DT_MIPS_DELTA_SYM_NO:
3145 case DT_MIPS_DELTA_CLASSSYM_NO:
3146 case DT_MIPS_LOCALPAGE_GOTIDX:
3147 case DT_MIPS_LOCAL_GOTIDX:
3148 case DT_MIPS_HIDDEN_GOTIDX:
3149 case DT_MIPS_PROTECTED_GOTIDX:
3150 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val);
3151 break;
3152 case DT_MIPS_ICHECKSUM:
3153 case DT_MIPS_FLAGS:
3154 case DT_MIPS_BASE_ADDRESS:
3155 case DT_MIPS_CONFLICT:
3156 case DT_MIPS_LIBLIST:
3157 case DT_MIPS_RLD_MAP:
3158 case DT_MIPS_DELTA_CLASS:
3159 case DT_MIPS_DELTA_INSTANCE:
3160 case DT_MIPS_DELTA_RELOC:
3161 case DT_MIPS_DELTA_SYM:
3162 case DT_MIPS_DELTA_CLASSSYM:
3163 case DT_MIPS_CXX_FLAGS:
3164 case DT_MIPS_PIXIE_INIT:
3165 case DT_MIPS_SYMBOL_LIB:
3166 case DT_MIPS_OPTIONS:
3167 case DT_MIPS_INTERFACE:
3168 case DT_MIPS_DYNSTR_ALIGN:
3169 case DT_MIPS_INTERFACE_SIZE:
3170 case DT_MIPS_RLD_TEXT_RESOLVE_ADDR:
3171 case DT_MIPS_COMPACT_SIZE:
3172 case DT_MIPS_GP_VALUE:
3173 case DT_MIPS_AUX_DYNAMIC:
3174 case DT_MIPS_PLTGOT:
3175 case DT_MIPS_RLD_OBJ_UPDATE:
3176 case DT_MIPS_RWPLT:
3177 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val);
3178 break;
3179 case DT_MIPS_IVERSION:
3180 case DT_MIPS_PERF_SUFFIX:
3181 case DT_AUXILIARY:
3182 case DT_FILTER:
3183 name = dyn_str(re, stab, dyn->d_un.d_val);
3184 printf(" %s\n", name);
3185 break;
3186 case DT_MIPS_TIME_STAMP:
3187 printf(" %s\n", timestamp(dyn->d_un.d_val));
3188 break;
3189 }
3190 break;
3191 default:
3192 printf("\n");
3193 break;
3194 }
3195 }
3196
3197 static void
dump_dyn_val(struct readelf * re,GElf_Dyn * dyn,uint32_t stab)3198 dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab)
3199 {
3200 const char *name;
3201
3202 if (dyn->d_tag >= DT_LOPROC && dyn->d_tag <= DT_HIPROC) {
3203 dump_arch_dyn_val(re, dyn, stab);
3204 return;
3205 }
3206
3207 /* These entry values are index into the string table. */
3208 name = NULL;
3209 if (dyn->d_tag == DT_NEEDED || dyn->d_tag == DT_SONAME ||
3210 dyn->d_tag == DT_RPATH || dyn->d_tag == DT_RUNPATH)
3211 name = dyn_str(re, stab, dyn->d_un.d_val);
3212
3213 switch(dyn->d_tag) {
3214 case DT_NULL:
3215 case DT_PLTGOT:
3216 case DT_HASH:
3217 case DT_STRTAB:
3218 case DT_SYMTAB:
3219 case DT_RELA:
3220 case DT_INIT:
3221 case DT_SYMBOLIC:
3222 case DT_REL:
3223 case DT_DEBUG:
3224 case DT_TEXTREL:
3225 case DT_JMPREL:
3226 case DT_FINI:
3227 case DT_VERDEF:
3228 case DT_VERNEED:
3229 case DT_VERSYM:
3230 case DT_GNU_HASH:
3231 case DT_GNU_LIBLIST:
3232 case DT_GNU_CONFLICT:
3233 printf(" 0x%jx\n", (uintmax_t) dyn->d_un.d_val);
3234 break;
3235 case DT_PLTRELSZ:
3236 case DT_RELASZ:
3237 case DT_RELAENT:
3238 case DT_STRSZ:
3239 case DT_SYMENT:
3240 case DT_RELSZ:
3241 case DT_RELENT:
3242 case DT_INIT_ARRAYSZ:
3243 case DT_FINI_ARRAYSZ:
3244 case DT_GNU_CONFLICTSZ:
3245 case DT_GNU_LIBLISTSZ:
3246 printf(" %ju (bytes)\n", (uintmax_t) dyn->d_un.d_val);
3247 break;
3248 case DT_RELACOUNT:
3249 case DT_RELCOUNT:
3250 case DT_VERDEFNUM:
3251 case DT_VERNEEDNUM:
3252 printf(" %ju\n", (uintmax_t) dyn->d_un.d_val);
3253 break;
3254 case DT_NEEDED:
3255 printf(" Shared library: [%s]\n", name);
3256 break;
3257 case DT_SONAME:
3258 printf(" Library soname: [%s]\n", name);
3259 break;
3260 case DT_RPATH:
3261 printf(" Library rpath: [%s]\n", name);
3262 break;
3263 case DT_RUNPATH:
3264 printf(" Library runpath: [%s]\n", name);
3265 break;
3266 case DT_PLTREL:
3267 printf(" %s\n", dt_type(re->ehdr.e_machine, dyn->d_un.d_val));
3268 break;
3269 case DT_GNU_PRELINKED:
3270 printf(" %s\n", timestamp(dyn->d_un.d_val));
3271 break;
3272 default:
3273 printf("\n");
3274 }
3275 }
3276
3277 static void
dump_rel(struct readelf * re,struct section * s,Elf_Data * d)3278 dump_rel(struct readelf *re, struct section *s, Elf_Data *d)
3279 {
3280 GElf_Rel r;
3281 const char *symname;
3282 uint64_t symval;
3283 int i, len;
3284
3285 if (s->link >= re->shnum)
3286 return;
3287
3288 #define REL_HDR "r_offset", "r_info", "r_type", "st_value", "st_name"
3289 #define REL_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \
3290 r_type(re->ehdr.e_machine, ELF32_R_TYPE(r.r_info)), \
3291 (uintmax_t)symval, symname
3292 #define REL_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \
3293 r_type(re->ehdr.e_machine, ELF64_R_TYPE(r.r_info)), \
3294 (uintmax_t)symval, symname
3295
3296 printf("\nRelocation section (%s):\n", s->name);
3297 if (re->ec == ELFCLASS32)
3298 printf("%-8s %-8s %-19s %-8s %s\n", REL_HDR);
3299 else {
3300 if (re->options & RE_WW)
3301 printf("%-16s %-16s %-24s %-16s %s\n", REL_HDR);
3302 else
3303 printf("%-12s %-12s %-19s %-16s %s\n", REL_HDR);
3304 }
3305 assert(d->d_size == s->sz);
3306 if (!get_ent_count(s, &len))
3307 return;
3308 for (i = 0; i < len; i++) {
3309 if (gelf_getrel(d, i, &r) != &r) {
3310 warnx("gelf_getrel failed: %s", elf_errmsg(-1));
3311 continue;
3312 }
3313 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info));
3314 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info));
3315 if (re->ec == ELFCLASS32) {
3316 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info),
3317 ELF64_R_TYPE(r.r_info));
3318 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s\n", REL_CT32);
3319 } else {
3320 if (re->options & RE_WW)
3321 printf("%16.16jx %16.16jx %-24.24s"
3322 " %16.16jx %s\n", REL_CT64);
3323 else
3324 printf("%12.12jx %12.12jx %-19.19s"
3325 " %16.16jx %s\n", REL_CT64);
3326 }
3327 }
3328
3329 #undef REL_HDR
3330 #undef REL_CT
3331 }
3332
3333 static void
dump_rela(struct readelf * re,struct section * s,Elf_Data * d)3334 dump_rela(struct readelf *re, struct section *s, Elf_Data *d)
3335 {
3336 GElf_Rela r;
3337 const char *symname;
3338 uint64_t symval;
3339 int i, len;
3340
3341 if (s->link >= re->shnum)
3342 return;
3343
3344 #define RELA_HDR "r_offset", "r_info", "r_type", "st_value", \
3345 "st_name + r_addend"
3346 #define RELA_CT32 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \
3347 r_type(re->ehdr.e_machine, ELF32_R_TYPE(r.r_info)), \
3348 (uintmax_t)symval, symname
3349 #define RELA_CT64 (uintmax_t)r.r_offset, (uintmax_t)r.r_info, \
3350 r_type(re->ehdr.e_machine, ELF64_R_TYPE(r.r_info)), \
3351 (uintmax_t)symval, symname
3352
3353 printf("\nRelocation section with addend (%s):\n", s->name);
3354 if (re->ec == ELFCLASS32)
3355 printf("%-8s %-8s %-19s %-8s %s\n", RELA_HDR);
3356 else {
3357 if (re->options & RE_WW)
3358 printf("%-16s %-16s %-24s %-16s %s\n", RELA_HDR);
3359 else
3360 printf("%-12s %-12s %-19s %-16s %s\n", RELA_HDR);
3361 }
3362 assert(d->d_size == s->sz);
3363 if (!get_ent_count(s, &len))
3364 return;
3365 for (i = 0; i < len; i++) {
3366 if (gelf_getrela(d, i, &r) != &r) {
3367 warnx("gelf_getrel failed: %s", elf_errmsg(-1));
3368 continue;
3369 }
3370 symname = get_symbol_name(re, s->link, GELF_R_SYM(r.r_info));
3371 symval = get_symbol_value(re, s->link, GELF_R_SYM(r.r_info));
3372 if (re->ec == ELFCLASS32) {
3373 r.r_info = ELF32_R_INFO(ELF64_R_SYM(r.r_info),
3374 ELF64_R_TYPE(r.r_info));
3375 printf("%8.8jx %8.8jx %-19.19s %8.8jx %s", RELA_CT32);
3376 printf(" + %x\n", (uint32_t) r.r_addend);
3377 } else {
3378 if (re->options & RE_WW)
3379 printf("%16.16jx %16.16jx %-24.24s"
3380 " %16.16jx %s", RELA_CT64);
3381 else
3382 printf("%12.12jx %12.12jx %-19.19s"
3383 " %16.16jx %s", RELA_CT64);
3384 printf(" + %jx\n", (uintmax_t) r.r_addend);
3385 }
3386 }
3387
3388 #undef RELA_HDR
3389 #undef RELA_CT
3390 }
3391
3392 static void
dump_reloc(struct readelf * re)3393 dump_reloc(struct readelf *re)
3394 {
3395 struct section *s;
3396 Elf_Data *d;
3397 int i, elferr;
3398
3399 for (i = 0; (size_t)i < re->shnum; i++) {
3400 s = &re->sl[i];
3401 if (s->type == SHT_REL || s->type == SHT_RELA) {
3402 (void) elf_errno();
3403 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3404 elferr = elf_errno();
3405 if (elferr != 0)
3406 warnx("elf_getdata failed: %s",
3407 elf_errmsg(elferr));
3408 continue;
3409 }
3410 if (s->type == SHT_REL)
3411 dump_rel(re, s, d);
3412 else
3413 dump_rela(re, s, d);
3414 }
3415 }
3416 }
3417
3418 static void
dump_symtab(struct readelf * re,int i)3419 dump_symtab(struct readelf *re, int i)
3420 {
3421 struct section *s;
3422 Elf_Data *d;
3423 GElf_Sym sym;
3424 const char *name;
3425 uint32_t stab;
3426 int elferr, j, len;
3427 uint16_t vs;
3428
3429 s = &re->sl[i];
3430 if (s->link >= re->shnum)
3431 return;
3432 stab = s->link;
3433 (void) elf_errno();
3434 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3435 elferr = elf_errno();
3436 if (elferr != 0)
3437 warnx("elf_getdata failed: %s", elf_errmsg(elferr));
3438 return;
3439 }
3440 if (d->d_size <= 0)
3441 return;
3442 if (!get_ent_count(s, &len))
3443 return;
3444 printf("Symbol table (%s)", s->name);
3445 printf(" contains %d entries:\n", len);
3446 printf("%7s%9s%14s%5s%8s%6s%9s%5s\n", "Num:", "Value", "Size", "Type",
3447 "Bind", "Vis", "Ndx", "Name");
3448
3449 for (j = 0; j < len; j++) {
3450 if (gelf_getsym(d, j, &sym) != &sym) {
3451 warnx("gelf_getsym failed: %s", elf_errmsg(-1));
3452 continue;
3453 }
3454 printf("%6d:", j);
3455 printf(" %16.16jx", (uintmax_t)sym.st_value);
3456 printf(" %5ju", sym.st_size);
3457 printf(" %-7s", st_type(GELF_ST_TYPE(sym.st_info)));
3458 printf(" %-6s", st_bind(GELF_ST_BIND(sym.st_info)));
3459 printf(" %-8s", st_vis(GELF_ST_VISIBILITY(sym.st_other)));
3460 printf(" %3s", st_shndx(sym.st_shndx));
3461 if ((name = elf_strptr(re->elf, stab, sym.st_name)) != NULL)
3462 printf(" %s", name);
3463 /* Append symbol version string for SHT_DYNSYM symbol table. */
3464 if (s->type == SHT_DYNSYM && re->ver != NULL &&
3465 re->vs != NULL && re->vs[j] > 1) {
3466 vs = re->vs[j] & VERSYM_VERSION;
3467 if (vs >= re->ver_sz || re->ver[vs].name == NULL) {
3468 warnx("invalid versym version index %u", vs);
3469 break;
3470 }
3471 if (re->vs[j] & VERSYM_HIDDEN || re->ver[vs].type == 0)
3472 printf("@%s (%d)", re->ver[vs].name, vs);
3473 else
3474 printf("@@%s (%d)", re->ver[vs].name, vs);
3475 }
3476 putchar('\n');
3477 }
3478
3479 }
3480
3481 static void
dump_symtabs(struct readelf * re)3482 dump_symtabs(struct readelf *re)
3483 {
3484 GElf_Dyn dyn;
3485 Elf_Data *d;
3486 struct section *s;
3487 uint64_t dyn_off;
3488 int elferr, i, len;
3489
3490 /*
3491 * If -D is specified, only dump the symbol table specified by
3492 * the DT_SYMTAB entry in the .dynamic section.
3493 */
3494 dyn_off = 0;
3495 if (re->options & RE_DD) {
3496 s = NULL;
3497 for (i = 0; (size_t)i < re->shnum; i++)
3498 if (re->sl[i].type == SHT_DYNAMIC) {
3499 s = &re->sl[i];
3500 break;
3501 }
3502 if (s == NULL)
3503 return;
3504 (void) elf_errno();
3505 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3506 elferr = elf_errno();
3507 if (elferr != 0)
3508 warnx("elf_getdata failed: %s", elf_errmsg(-1));
3509 return;
3510 }
3511 if (d->d_size <= 0)
3512 return;
3513 if (!get_ent_count(s, &len))
3514 return;
3515
3516 for (i = 0; i < len; i++) {
3517 if (gelf_getdyn(d, i, &dyn) != &dyn) {
3518 warnx("gelf_getdyn failed: %s", elf_errmsg(-1));
3519 continue;
3520 }
3521 if (dyn.d_tag == DT_SYMTAB) {
3522 dyn_off = dyn.d_un.d_val;
3523 break;
3524 }
3525 }
3526 }
3527
3528 /* Find and dump symbol tables. */
3529 for (i = 0; (size_t)i < re->shnum; i++) {
3530 s = &re->sl[i];
3531 if (s->type == SHT_SYMTAB || s->type == SHT_DYNSYM) {
3532 if (re->options & RE_DD) {
3533 if (dyn_off == s->addr) {
3534 dump_symtab(re, i);
3535 break;
3536 }
3537 } else
3538 dump_symtab(re, i);
3539 }
3540 }
3541 }
3542
3543 static void
dump_svr4_hash(struct section * s)3544 dump_svr4_hash(struct section *s)
3545 {
3546 Elf_Data *d;
3547 uint32_t *buf;
3548 uint32_t nbucket, nchain;
3549 uint32_t *bucket, *chain;
3550 uint32_t *bl, *c, maxl, total;
3551 int elferr, i, j;
3552
3553 /* Read and parse the content of .hash section. */
3554 (void) elf_errno();
3555 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3556 elferr = elf_errno();
3557 if (elferr != 0)
3558 warnx("elf_getdata failed: %s", elf_errmsg(elferr));
3559 return;
3560 }
3561 if (d->d_size < 2 * sizeof(uint32_t)) {
3562 warnx(".hash section too small");
3563 return;
3564 }
3565 buf = d->d_buf;
3566 nbucket = buf[0];
3567 nchain = buf[1];
3568 if (nbucket <= 0 || nchain <= 0) {
3569 warnx("Malformed .hash section");
3570 return;
3571 }
3572 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) {
3573 warnx("Malformed .hash section");
3574 return;
3575 }
3576 bucket = &buf[2];
3577 chain = &buf[2 + nbucket];
3578
3579 maxl = 0;
3580 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
3581 errx(EXIT_FAILURE, "calloc failed");
3582 for (i = 0; (uint32_t)i < nbucket; i++)
3583 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j])
3584 if (++bl[i] > maxl)
3585 maxl = bl[i];
3586 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
3587 errx(EXIT_FAILURE, "calloc failed");
3588 for (i = 0; (uint32_t)i < nbucket; i++)
3589 c[bl[i]]++;
3590 printf("\nHistogram for bucket list length (total of %u buckets):\n",
3591 nbucket);
3592 printf(" Length\tNumber\t\t%% of total\tCoverage\n");
3593 total = 0;
3594 for (i = 0; (uint32_t)i <= maxl; i++) {
3595 total += c[i] * i;
3596 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i],
3597 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1));
3598 }
3599 free(c);
3600 free(bl);
3601 }
3602
3603 static void
dump_svr4_hash64(struct readelf * re,struct section * s)3604 dump_svr4_hash64(struct readelf *re, struct section *s)
3605 {
3606 Elf_Data *d, dst;
3607 uint64_t *buf;
3608 uint64_t nbucket, nchain;
3609 uint64_t *bucket, *chain;
3610 uint64_t *bl, *c, maxl, total;
3611 int elferr, i, j;
3612
3613 /*
3614 * ALPHA uses 64-bit hash entries. Since libelf assumes that
3615 * .hash section contains only 32-bit entry, an explicit
3616 * gelf_xlatetom is needed here.
3617 */
3618 (void) elf_errno();
3619 if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
3620 elferr = elf_errno();
3621 if (elferr != 0)
3622 warnx("elf_rawdata failed: %s",
3623 elf_errmsg(elferr));
3624 return;
3625 }
3626 d->d_type = ELF_T_XWORD;
3627 memcpy(&dst, d, sizeof(Elf_Data));
3628 if (gelf_xlatetom(re->elf, &dst, d,
3629 re->ehdr.e_ident[EI_DATA]) != &dst) {
3630 warnx("gelf_xlatetom failed: %s", elf_errmsg(-1));
3631 return;
3632 }
3633 if (dst.d_size < 2 * sizeof(uint64_t)) {
3634 warnx(".hash section too small");
3635 return;
3636 }
3637 buf = dst.d_buf;
3638 nbucket = buf[0];
3639 nchain = buf[1];
3640 if (nbucket <= 0 || nchain <= 0) {
3641 warnx("Malformed .hash section");
3642 return;
3643 }
3644 if (d->d_size != (nbucket + nchain + 2) * sizeof(uint32_t)) {
3645 warnx("Malformed .hash section");
3646 return;
3647 }
3648 bucket = &buf[2];
3649 chain = &buf[2 + nbucket];
3650
3651 maxl = 0;
3652 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
3653 errx(EXIT_FAILURE, "calloc failed");
3654 for (i = 0; (uint32_t)i < nbucket; i++)
3655 for (j = bucket[i]; j > 0 && (uint32_t)j < nchain; j = chain[j])
3656 if (++bl[i] > maxl)
3657 maxl = bl[i];
3658 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
3659 errx(EXIT_FAILURE, "calloc failed");
3660 for (i = 0; (uint64_t)i < nbucket; i++)
3661 c[bl[i]]++;
3662 printf("Histogram for bucket list length (total of %ju buckets):\n",
3663 (uintmax_t)nbucket);
3664 printf(" Length\tNumber\t\t%% of total\tCoverage\n");
3665 total = 0;
3666 for (i = 0; (uint64_t)i <= maxl; i++) {
3667 total += c[i] * i;
3668 printf("%7u\t%-10ju\t(%5.1f%%)\t%5.1f%%\n", i, (uintmax_t)c[i],
3669 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1));
3670 }
3671 free(c);
3672 free(bl);
3673 }
3674
3675 static void
dump_gnu_hash(struct readelf * re,struct section * s)3676 dump_gnu_hash(struct readelf *re, struct section *s)
3677 {
3678 struct section *ds;
3679 Elf_Data *d;
3680 uint32_t *buf;
3681 uint32_t *bucket, *chain;
3682 uint32_t nbucket, nchain, symndx, maskwords;
3683 uint32_t *bl, *c, maxl, total;
3684 int elferr, dynsymcount, i, j;
3685
3686 (void) elf_errno();
3687 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3688 elferr = elf_errno();
3689 if (elferr != 0)
3690 warnx("elf_getdata failed: %s",
3691 elf_errmsg(elferr));
3692 return;
3693 }
3694 if (d->d_size < 4 * sizeof(uint32_t)) {
3695 warnx(".gnu.hash section too small");
3696 return;
3697 }
3698 buf = d->d_buf;
3699 nbucket = buf[0];
3700 symndx = buf[1];
3701 maskwords = buf[2];
3702 buf += 4;
3703 if (s->link >= re->shnum)
3704 return;
3705 ds = &re->sl[s->link];
3706 if (!get_ent_count(ds, &dynsymcount))
3707 return;
3708 nchain = dynsymcount - symndx;
3709 if (d->d_size != 4 * sizeof(uint32_t) + maskwords *
3710 (re->ec == ELFCLASS32 ? sizeof(uint32_t) : sizeof(uint64_t)) +
3711 (nbucket + nchain) * sizeof(uint32_t)) {
3712 warnx("Malformed .gnu.hash section");
3713 return;
3714 }
3715 bucket = buf + (re->ec == ELFCLASS32 ? maskwords : maskwords * 2);
3716 chain = bucket + nbucket;
3717
3718 maxl = 0;
3719 if ((bl = calloc(nbucket, sizeof(*bl))) == NULL)
3720 errx(EXIT_FAILURE, "calloc failed");
3721 for (i = 0; (uint32_t)i < nbucket; i++)
3722 for (j = bucket[i]; j > 0 && (uint32_t)j - symndx < nchain;
3723 j++) {
3724 if (++bl[i] > maxl)
3725 maxl = bl[i];
3726 if (chain[j - symndx] & 1)
3727 break;
3728 }
3729 if ((c = calloc(maxl + 1, sizeof(*c))) == NULL)
3730 errx(EXIT_FAILURE, "calloc failed");
3731 for (i = 0; (uint32_t)i < nbucket; i++)
3732 c[bl[i]]++;
3733 printf("Histogram for bucket list length (total of %u buckets):\n",
3734 nbucket);
3735 printf(" Length\tNumber\t\t%% of total\tCoverage\n");
3736 total = 0;
3737 for (i = 0; (uint32_t)i <= maxl; i++) {
3738 total += c[i] * i;
3739 printf("%7u\t%-10u\t(%5.1f%%)\t%5.1f%%\n", i, c[i],
3740 c[i] * 100.0 / nbucket, total * 100.0 / (nchain - 1));
3741 }
3742 free(c);
3743 free(bl);
3744 }
3745
3746 static void
dump_hash(struct readelf * re)3747 dump_hash(struct readelf *re)
3748 {
3749 struct section *s;
3750 int i;
3751
3752 for (i = 0; (size_t) i < re->shnum; i++) {
3753 s = &re->sl[i];
3754 if (s->type == SHT_HASH || s->type == SHT_GNU_HASH) {
3755 if (s->type == SHT_GNU_HASH)
3756 dump_gnu_hash(re, s);
3757 else if (re->ehdr.e_machine == EM_ALPHA &&
3758 s->entsize == 8)
3759 dump_svr4_hash64(re, s);
3760 else
3761 dump_svr4_hash(s);
3762 }
3763 }
3764 }
3765
3766 static void
dump_notes(struct readelf * re)3767 dump_notes(struct readelf *re)
3768 {
3769 struct section *s;
3770 const char *rawfile;
3771 GElf_Phdr phdr;
3772 Elf_Data *d;
3773 size_t phnum;
3774 int i, elferr;
3775
3776 if (re->ehdr.e_type == ET_CORE) {
3777 /*
3778 * Search program headers in the core file for
3779 * PT_NOTE entry.
3780 */
3781 if (elf_getphnum(re->elf, &phnum) == 0) {
3782 warnx("elf_getphnum failed: %s", elf_errmsg(-1));
3783 return;
3784 }
3785 if (phnum == 0)
3786 return;
3787 if ((rawfile = elf_rawfile(re->elf, NULL)) == NULL) {
3788 warnx("elf_rawfile failed: %s", elf_errmsg(-1));
3789 return;
3790 }
3791 for (i = 0; (size_t) i < phnum; i++) {
3792 if (gelf_getphdr(re->elf, i, &phdr) != &phdr) {
3793 warnx("gelf_getphdr failed: %s",
3794 elf_errmsg(-1));
3795 continue;
3796 }
3797 if (phdr.p_type == PT_NOTE)
3798 dump_notes_content(re, rawfile + phdr.p_offset,
3799 phdr.p_filesz, phdr.p_offset);
3800 }
3801
3802 } else {
3803 /*
3804 * For objects other than core files, Search for
3805 * SHT_NOTE sections.
3806 */
3807 for (i = 0; (size_t) i < re->shnum; i++) {
3808 s = &re->sl[i];
3809 if (s->type == SHT_NOTE) {
3810 (void) elf_errno();
3811 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3812 elferr = elf_errno();
3813 if (elferr != 0)
3814 warnx("elf_getdata failed: %s",
3815 elf_errmsg(elferr));
3816 continue;
3817 }
3818 dump_notes_content(re, d->d_buf, d->d_size,
3819 s->off);
3820 }
3821 }
3822 }
3823 }
3824
3825 static void
dump_notes_content(struct readelf * re,const char * buf,size_t sz,off_t off)3826 dump_notes_content(struct readelf *re, const char *buf, size_t sz, off_t off)
3827 {
3828 Elf_Note *note;
3829 const char *end, *name;
3830
3831 printf("\nNotes at offset %#010jx with length %#010jx:\n",
3832 (uintmax_t) off, (uintmax_t) sz);
3833 printf(" %-13s %-15s %s\n", "Owner", "Data size", "Description");
3834 end = buf + sz;
3835 while (buf < end) {
3836 if (buf + sizeof(*note) > end) {
3837 warnx("invalid note header");
3838 return;
3839 }
3840 note = (Elf_Note *)(uintptr_t) buf;
3841 name = (char *)(uintptr_t)(note + 1);
3842 /*
3843 * The name field is required to be nul-terminated, and
3844 * n_namesz includes the terminating nul in observed
3845 * implementations (contrary to the ELF-64 spec). A special
3846 * case is needed for cores generated by some older Linux
3847 * versions, which write a note named "CORE" without a nul
3848 * terminator and n_namesz = 4.
3849 */
3850 if (note->n_namesz == 0)
3851 name = "";
3852 else if (note->n_namesz == 4 && strncmp(name, "CORE", 4) == 0)
3853 name = "CORE";
3854 else if (strnlen(name, note->n_namesz) >= note->n_namesz)
3855 name = "<invalid>";
3856 printf(" %-13s %#010jx", name, (uintmax_t) note->n_descsz);
3857 printf(" %s\n", note_type(name, re->ehdr.e_type,
3858 note->n_type));
3859 buf += sizeof(Elf_Note) + roundup2(note->n_namesz, 4) +
3860 roundup2(note->n_descsz, 4);
3861 }
3862 }
3863
3864 /*
3865 * Symbol versioning sections are the same for 32bit and 64bit
3866 * ELF objects.
3867 */
3868 #define Elf_Verdef Elf32_Verdef
3869 #define Elf_Verdaux Elf32_Verdaux
3870 #define Elf_Verneed Elf32_Verneed
3871 #define Elf_Vernaux Elf32_Vernaux
3872
3873 #define SAVE_VERSION_NAME(x, n, t) \
3874 do { \
3875 while (x >= re->ver_sz) { \
3876 nv = realloc(re->ver, \
3877 sizeof(*re->ver) * re->ver_sz * 2); \
3878 if (nv == NULL) { \
3879 warn("realloc failed"); \
3880 free(re->ver); \
3881 return; \
3882 } \
3883 re->ver = nv; \
3884 for (i = re->ver_sz; i < re->ver_sz * 2; i++) { \
3885 re->ver[i].name = NULL; \
3886 re->ver[i].type = 0; \
3887 } \
3888 re->ver_sz *= 2; \
3889 } \
3890 if (x > 1) { \
3891 re->ver[x].name = n; \
3892 re->ver[x].type = t; \
3893 } \
3894 } while (0)
3895
3896
3897 static void
dump_verdef(struct readelf * re,int dump)3898 dump_verdef(struct readelf *re, int dump)
3899 {
3900 struct section *s;
3901 struct symver *nv;
3902 Elf_Data *d;
3903 Elf_Verdef *vd;
3904 Elf_Verdaux *vda;
3905 uint8_t *buf, *end, *buf2;
3906 const char *name;
3907 int elferr, i, j;
3908
3909 if ((s = re->vd_s) == NULL)
3910 return;
3911 if (s->link >= re->shnum)
3912 return;
3913
3914 if (re->ver == NULL) {
3915 re->ver_sz = 16;
3916 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) ==
3917 NULL) {
3918 warn("calloc failed");
3919 return;
3920 }
3921 re->ver[0].name = "*local*";
3922 re->ver[1].name = "*global*";
3923 }
3924
3925 if (dump)
3926 printf("\nVersion definition section (%s):\n", s->name);
3927 (void) elf_errno();
3928 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
3929 elferr = elf_errno();
3930 if (elferr != 0)
3931 warnx("elf_getdata failed: %s", elf_errmsg(elferr));
3932 return;
3933 }
3934 if (d->d_size == 0)
3935 return;
3936
3937 buf = d->d_buf;
3938 end = buf + d->d_size;
3939 while (buf + sizeof(Elf_Verdef) <= end) {
3940 vd = (Elf_Verdef *) (uintptr_t) buf;
3941 if (dump) {
3942 printf(" 0x%4.4lx", (unsigned long)
3943 (buf - (uint8_t *)d->d_buf));
3944 printf(" vd_version: %u vd_flags: %d"
3945 " vd_ndx: %u vd_cnt: %u", vd->vd_version,
3946 vd->vd_flags, vd->vd_ndx, vd->vd_cnt);
3947 }
3948 buf2 = buf + vd->vd_aux;
3949 j = 0;
3950 while (buf2 + sizeof(Elf_Verdaux) <= end && j < vd->vd_cnt) {
3951 vda = (Elf_Verdaux *) (uintptr_t) buf2;
3952 name = get_string(re, s->link, vda->vda_name);
3953 if (j == 0) {
3954 if (dump)
3955 printf(" vda_name: %s\n", name);
3956 SAVE_VERSION_NAME((int)vd->vd_ndx, name, 1);
3957 } else if (dump)
3958 printf(" 0x%4.4lx parent: %s\n",
3959 (unsigned long) (buf2 -
3960 (uint8_t *)d->d_buf), name);
3961 if (vda->vda_next == 0)
3962 break;
3963 buf2 += vda->vda_next;
3964 j++;
3965 }
3966 if (vd->vd_next == 0)
3967 break;
3968 buf += vd->vd_next;
3969 }
3970 }
3971
3972 static void
dump_verneed(struct readelf * re,int dump)3973 dump_verneed(struct readelf *re, int dump)
3974 {
3975 struct section *s;
3976 struct symver *nv;
3977 Elf_Data *d;
3978 Elf_Verneed *vn;
3979 Elf_Vernaux *vna;
3980 uint8_t *buf, *end, *buf2;
3981 const char *name;
3982 int elferr, i, j;
3983
3984 if ((s = re->vn_s) == NULL)
3985 return;
3986 if (s->link >= re->shnum)
3987 return;
3988
3989 if (re->ver == NULL) {
3990 re->ver_sz = 16;
3991 if ((re->ver = calloc(re->ver_sz, sizeof(*re->ver))) ==
3992 NULL) {
3993 warn("calloc failed");
3994 return;
3995 }
3996 re->ver[0].name = "*local*";
3997 re->ver[1].name = "*global*";
3998 }
3999
4000 if (dump)
4001 printf("\nVersion needed section (%s):\n", s->name);
4002 (void) elf_errno();
4003 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4004 elferr = elf_errno();
4005 if (elferr != 0)
4006 warnx("elf_getdata failed: %s", elf_errmsg(elferr));
4007 return;
4008 }
4009 if (d->d_size == 0)
4010 return;
4011
4012 buf = d->d_buf;
4013 end = buf + d->d_size;
4014 while (buf + sizeof(Elf_Verneed) <= end) {
4015 vn = (Elf_Verneed *) (uintptr_t) buf;
4016 if (dump) {
4017 printf(" 0x%4.4lx", (unsigned long)
4018 (buf - (uint8_t *)d->d_buf));
4019 printf(" vn_version: %u vn_file: %s vn_cnt: %u\n",
4020 vn->vn_version,
4021 get_string(re, s->link, vn->vn_file),
4022 vn->vn_cnt);
4023 }
4024 buf2 = buf + vn->vn_aux;
4025 j = 0;
4026 while (buf2 + sizeof(Elf_Vernaux) <= end && j < vn->vn_cnt) {
4027 vna = (Elf32_Vernaux *) (uintptr_t) buf2;
4028 if (dump)
4029 printf(" 0x%4.4lx", (unsigned long)
4030 (buf2 - (uint8_t *)d->d_buf));
4031 name = get_string(re, s->link, vna->vna_name);
4032 if (dump)
4033 printf(" vna_name: %s vna_flags: %u"
4034 " vna_other: %u\n", name,
4035 vna->vna_flags, vna->vna_other);
4036 SAVE_VERSION_NAME((int)vna->vna_other, name, 0);
4037 if (vna->vna_next == 0)
4038 break;
4039 buf2 += vna->vna_next;
4040 j++;
4041 }
4042 if (vn->vn_next == 0)
4043 break;
4044 buf += vn->vn_next;
4045 }
4046 }
4047
4048 static void
dump_versym(struct readelf * re)4049 dump_versym(struct readelf *re)
4050 {
4051 int i;
4052 uint16_t vs;
4053
4054 if (re->vs_s == NULL || re->ver == NULL || re->vs == NULL)
4055 return;
4056 printf("\nVersion symbol section (%s):\n", re->vs_s->name);
4057 for (i = 0; i < re->vs_sz; i++) {
4058 if ((i & 3) == 0) {
4059 if (i > 0)
4060 putchar('\n');
4061 printf(" %03x:", i);
4062 }
4063 vs = re->vs[i] & VERSYM_VERSION;
4064 if (vs >= re->ver_sz || re->ver[vs].name == NULL) {
4065 warnx("invalid versym version index %u", re->vs[i]);
4066 break;
4067 }
4068 if (re->vs[i] & VERSYM_HIDDEN)
4069 printf(" %3xh %-12s ", vs,
4070 re->ver[re->vs[i] & VERSYM_VERSION].name);
4071 else
4072 printf(" %3x %-12s ", vs, re->ver[re->vs[i]].name);
4073 }
4074 putchar('\n');
4075 }
4076
4077 static void
dump_ver(struct readelf * re)4078 dump_ver(struct readelf *re)
4079 {
4080
4081 if (re->vs_s && re->ver && re->vs)
4082 dump_versym(re);
4083 if (re->vd_s)
4084 dump_verdef(re, 1);
4085 if (re->vn_s)
4086 dump_verneed(re, 1);
4087 }
4088
4089 static void
search_ver(struct readelf * re)4090 search_ver(struct readelf *re)
4091 {
4092 struct section *s;
4093 Elf_Data *d;
4094 int elferr, i;
4095
4096 for (i = 0; (size_t) i < re->shnum; i++) {
4097 s = &re->sl[i];
4098 if (s->type == SHT_SUNW_versym)
4099 re->vs_s = s;
4100 if (s->type == SHT_SUNW_verneed)
4101 re->vn_s = s;
4102 if (s->type == SHT_SUNW_verdef)
4103 re->vd_s = s;
4104 }
4105 if (re->vd_s)
4106 dump_verdef(re, 0);
4107 if (re->vn_s)
4108 dump_verneed(re, 0);
4109 if (re->vs_s && re->ver != NULL) {
4110 (void) elf_errno();
4111 if ((d = elf_getdata(re->vs_s->scn, NULL)) == NULL) {
4112 elferr = elf_errno();
4113 if (elferr != 0)
4114 warnx("elf_getdata failed: %s",
4115 elf_errmsg(elferr));
4116 return;
4117 }
4118 if (d->d_size == 0)
4119 return;
4120 re->vs = d->d_buf;
4121 re->vs_sz = d->d_size / sizeof(Elf32_Half);
4122 }
4123 }
4124
4125 #undef Elf_Verdef
4126 #undef Elf_Verdaux
4127 #undef Elf_Verneed
4128 #undef Elf_Vernaux
4129 #undef SAVE_VERSION_NAME
4130
4131 /*
4132 * Elf32_Lib and Elf64_Lib are identical.
4133 */
4134 #define Elf_Lib Elf32_Lib
4135
4136 static void
dump_liblist(struct readelf * re)4137 dump_liblist(struct readelf *re)
4138 {
4139 struct section *s;
4140 struct tm *t;
4141 time_t ti;
4142 char tbuf[20];
4143 Elf_Data *d;
4144 Elf_Lib *lib;
4145 int i, j, k, elferr, first, len;
4146
4147 for (i = 0; (size_t) i < re->shnum; i++) {
4148 s = &re->sl[i];
4149 if (s->type != SHT_GNU_LIBLIST)
4150 continue;
4151 if (s->link >= re->shnum)
4152 continue;
4153 (void) elf_errno();
4154 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4155 elferr = elf_errno();
4156 if (elferr != 0)
4157 warnx("elf_getdata failed: %s",
4158 elf_errmsg(elferr));
4159 continue;
4160 }
4161 if (d->d_size <= 0)
4162 continue;
4163 lib = d->d_buf;
4164 if (!get_ent_count(s, &len))
4165 continue;
4166 printf("\nLibrary list section '%s' ", s->name);
4167 printf("contains %d entries:\n", len);
4168 printf("%12s%24s%18s%10s%6s\n", "Library", "Time Stamp",
4169 "Checksum", "Version", "Flags");
4170 for (j = 0; (uint64_t) j < s->sz / s->entsize; j++) {
4171 printf("%3d: ", j);
4172 printf("%-20.20s ",
4173 get_string(re, s->link, lib->l_name));
4174 ti = lib->l_time_stamp;
4175 t = gmtime(&ti);
4176 snprintf(tbuf, sizeof(tbuf), "%04d-%02d-%02dT%02d:%02d"
4177 ":%2d", t->tm_year + 1900, t->tm_mon + 1,
4178 t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
4179 printf("%-19.19s ", tbuf);
4180 printf("0x%08x ", lib->l_checksum);
4181 printf("%-7d %#x", lib->l_version, lib->l_flags);
4182 if (lib->l_flags != 0) {
4183 first = 1;
4184 putchar('(');
4185 for (k = 0; l_flag[k].name != NULL; k++) {
4186 if ((l_flag[k].value & lib->l_flags) ==
4187 0)
4188 continue;
4189 if (!first)
4190 putchar(',');
4191 else
4192 first = 0;
4193 printf("%s", l_flag[k].name);
4194 }
4195 putchar(')');
4196 }
4197 putchar('\n');
4198 lib++;
4199 }
4200 }
4201 }
4202
4203 #undef Elf_Lib
4204
4205 static void
dump_section_groups(struct readelf * re)4206 dump_section_groups(struct readelf *re)
4207 {
4208 struct section *s;
4209 const char *symname;
4210 Elf_Data *d;
4211 uint32_t *w;
4212 int i, j, elferr;
4213 size_t n;
4214
4215 for (i = 0; (size_t) i < re->shnum; i++) {
4216 s = &re->sl[i];
4217 if (s->type != SHT_GROUP)
4218 continue;
4219 if (s->link >= re->shnum)
4220 continue;
4221 (void) elf_errno();
4222 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4223 elferr = elf_errno();
4224 if (elferr != 0)
4225 warnx("elf_getdata failed: %s",
4226 elf_errmsg(elferr));
4227 continue;
4228 }
4229 if (d->d_size <= 0)
4230 continue;
4231
4232 w = d->d_buf;
4233
4234 /* We only support COMDAT section. */
4235 #ifndef GRP_COMDAT
4236 #define GRP_COMDAT 0x1
4237 #endif
4238 if ((*w++ & GRP_COMDAT) == 0)
4239 return;
4240
4241 if (s->entsize == 0)
4242 s->entsize = 4;
4243
4244 symname = get_symbol_name(re, s->link, s->info);
4245 n = s->sz / s->entsize;
4246 if (n-- < 1)
4247 return;
4248
4249 printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju"
4250 " sections:\n", i, s->name, symname, (uintmax_t)n);
4251 printf(" %-10.10s %s\n", "[Index]", "Name");
4252 for (j = 0; (size_t) j < n; j++, w++) {
4253 if (*w >= re->shnum) {
4254 warnx("invalid section index: %u", *w);
4255 continue;
4256 }
4257 printf(" [%5u] %s\n", *w, re->sl[*w].name);
4258 }
4259 }
4260 }
4261
4262 static uint8_t *
dump_unknown_tag(uint64_t tag,uint8_t * p,uint8_t * pe)4263 dump_unknown_tag(uint64_t tag, uint8_t *p, uint8_t *pe)
4264 {
4265 uint64_t val;
4266
4267 /*
4268 * According to ARM EABI: For tags > 32, even numbered tags have
4269 * a ULEB128 param and odd numbered ones have NUL-terminated
4270 * string param. This rule probably also applies for tags <= 32
4271 * if the object arch is not ARM.
4272 */
4273
4274 printf(" Tag_unknown_%ju: ", (uintmax_t) tag);
4275
4276 if (tag & 1) {
4277 printf("%s\n", (char *) p);
4278 p += strlen((char *) p) + 1;
4279 } else {
4280 val = _decode_uleb128(&p, pe);
4281 printf("%ju\n", (uintmax_t) val);
4282 }
4283
4284 return (p);
4285 }
4286
4287 static uint8_t *
dump_compatibility_tag(uint8_t * p,uint8_t * pe)4288 dump_compatibility_tag(uint8_t *p, uint8_t *pe)
4289 {
4290 uint64_t val;
4291
4292 val = _decode_uleb128(&p, pe);
4293 printf("flag = %ju, vendor = %s\n", val, p);
4294 p += strlen((char *) p) + 1;
4295
4296 return (p);
4297 }
4298
4299 static void
dump_arm_attributes(struct readelf * re,uint8_t * p,uint8_t * pe)4300 dump_arm_attributes(struct readelf *re, uint8_t *p, uint8_t *pe)
4301 {
4302 uint64_t tag, val;
4303 size_t i;
4304 int found, desc;
4305
4306 (void) re;
4307
4308 while (p < pe) {
4309 tag = _decode_uleb128(&p, pe);
4310 found = desc = 0;
4311 for (i = 0; i < sizeof(aeabi_tags) / sizeof(aeabi_tags[0]);
4312 i++) {
4313 if (tag == aeabi_tags[i].tag) {
4314 found = 1;
4315 printf(" %s: ", aeabi_tags[i].s_tag);
4316 if (aeabi_tags[i].get_desc) {
4317 desc = 1;
4318 val = _decode_uleb128(&p, pe);
4319 printf("%s\n",
4320 aeabi_tags[i].get_desc(val));
4321 }
4322 break;
4323 }
4324 if (tag < aeabi_tags[i].tag)
4325 break;
4326 }
4327 if (!found) {
4328 p = dump_unknown_tag(tag, p, pe);
4329 continue;
4330 }
4331 if (desc)
4332 continue;
4333
4334 switch (tag) {
4335 case 4: /* Tag_CPU_raw_name */
4336 case 5: /* Tag_CPU_name */
4337 case 67: /* Tag_conformance */
4338 printf("%s\n", (char *) p);
4339 p += strlen((char *) p) + 1;
4340 break;
4341 case 32: /* Tag_compatibility */
4342 p = dump_compatibility_tag(p, pe);
4343 break;
4344 case 64: /* Tag_nodefaults */
4345 /* ignored, written as 0. */
4346 (void) _decode_uleb128(&p, pe);
4347 printf("True\n");
4348 break;
4349 case 65: /* Tag_also_compatible_with */
4350 val = _decode_uleb128(&p, pe);
4351 /* Must be Tag_CPU_arch */
4352 if (val != 6) {
4353 printf("unknown\n");
4354 break;
4355 }
4356 val = _decode_uleb128(&p, pe);
4357 printf("%s\n", aeabi_cpu_arch(val));
4358 /* Skip NUL terminator. */
4359 p++;
4360 break;
4361 default:
4362 putchar('\n');
4363 break;
4364 }
4365 }
4366 }
4367
4368 #ifndef Tag_GNU_MIPS_ABI_FP
4369 #define Tag_GNU_MIPS_ABI_FP 4
4370 #endif
4371
4372 static void
dump_mips_attributes(struct readelf * re,uint8_t * p,uint8_t * pe)4373 dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe)
4374 {
4375 uint64_t tag, val;
4376
4377 (void) re;
4378
4379 while (p < pe) {
4380 tag = _decode_uleb128(&p, pe);
4381 switch (tag) {
4382 case Tag_GNU_MIPS_ABI_FP:
4383 val = _decode_uleb128(&p, pe);
4384 printf(" Tag_GNU_MIPS_ABI_FP: %s\n", mips_abi_fp(val));
4385 break;
4386 case 32: /* Tag_compatibility */
4387 p = dump_compatibility_tag(p, pe);
4388 break;
4389 default:
4390 p = dump_unknown_tag(tag, p, pe);
4391 break;
4392 }
4393 }
4394 }
4395
4396 #ifndef Tag_GNU_Power_ABI_FP
4397 #define Tag_GNU_Power_ABI_FP 4
4398 #endif
4399
4400 #ifndef Tag_GNU_Power_ABI_Vector
4401 #define Tag_GNU_Power_ABI_Vector 8
4402 #endif
4403
4404 static void
dump_ppc_attributes(uint8_t * p,uint8_t * pe)4405 dump_ppc_attributes(uint8_t *p, uint8_t *pe)
4406 {
4407 uint64_t tag, val;
4408
4409 while (p < pe) {
4410 tag = _decode_uleb128(&p, pe);
4411 switch (tag) {
4412 case Tag_GNU_Power_ABI_FP:
4413 val = _decode_uleb128(&p, pe);
4414 printf(" Tag_GNU_Power_ABI_FP: %s\n", ppc_abi_fp(val));
4415 break;
4416 case Tag_GNU_Power_ABI_Vector:
4417 val = _decode_uleb128(&p, pe);
4418 printf(" Tag_GNU_Power_ABI_Vector: %s\n",
4419 ppc_abi_vector(val));
4420 break;
4421 case 32: /* Tag_compatibility */
4422 p = dump_compatibility_tag(p, pe);
4423 break;
4424 default:
4425 p = dump_unknown_tag(tag, p, pe);
4426 break;
4427 }
4428 }
4429 }
4430
4431 static void
dump_attributes(struct readelf * re)4432 dump_attributes(struct readelf *re)
4433 {
4434 struct section *s;
4435 Elf_Data *d;
4436 uint8_t *p, *pe, *sp;
4437 size_t len, seclen, nlen, sublen;
4438 uint64_t val;
4439 int tag, i, elferr;
4440
4441 for (i = 0; (size_t) i < re->shnum; i++) {
4442 s = &re->sl[i];
4443 if (s->type != SHT_GNU_ATTRIBUTES &&
4444 (re->ehdr.e_machine != EM_ARM || s->type != SHT_LOPROC + 3))
4445 continue;
4446 (void) elf_errno();
4447 if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
4448 elferr = elf_errno();
4449 if (elferr != 0)
4450 warnx("elf_rawdata failed: %s",
4451 elf_errmsg(elferr));
4452 continue;
4453 }
4454 if (d->d_size <= 0)
4455 continue;
4456 p = d->d_buf;
4457 pe = p + d->d_size;
4458 if (*p != 'A') {
4459 printf("Unknown Attribute Section Format: %c\n",
4460 (char) *p);
4461 continue;
4462 }
4463 len = d->d_size - 1;
4464 p++;
4465 while (len > 0) {
4466 if (len < 4) {
4467 warnx("truncated attribute section length");
4468 return;
4469 }
4470 seclen = re->dw_decode(&p, 4);
4471 if (seclen > len) {
4472 warnx("invalid attribute section length");
4473 return;
4474 }
4475 len -= seclen;
4476 nlen = strlen((char *) p) + 1;
4477 if (nlen + 4 > seclen) {
4478 warnx("invalid attribute section name");
4479 return;
4480 }
4481 printf("Attribute Section: %s\n", (char *) p);
4482 p += nlen;
4483 seclen -= nlen + 4;
4484 while (seclen > 0) {
4485 sp = p;
4486 tag = *p++;
4487 sublen = re->dw_decode(&p, 4);
4488 if (sublen > seclen) {
4489 warnx("invalid attribute sub-section"
4490 " length");
4491 return;
4492 }
4493 seclen -= sublen;
4494 printf("%s", top_tag(tag));
4495 if (tag == 2 || tag == 3) {
4496 putchar(':');
4497 for (;;) {
4498 val = _decode_uleb128(&p, pe);
4499 if (val == 0)
4500 break;
4501 printf(" %ju", (uintmax_t) val);
4502 }
4503 }
4504 putchar('\n');
4505 if (re->ehdr.e_machine == EM_ARM &&
4506 s->type == SHT_LOPROC + 3)
4507 dump_arm_attributes(re, p, sp + sublen);
4508 else if (re->ehdr.e_machine == EM_MIPS ||
4509 re->ehdr.e_machine == EM_MIPS_RS3_LE)
4510 dump_mips_attributes(re, p,
4511 sp + sublen);
4512 else if (re->ehdr.e_machine == EM_PPC)
4513 dump_ppc_attributes(p, sp + sublen);
4514 p = sp + sublen;
4515 }
4516 }
4517 }
4518 }
4519
4520 static void
dump_mips_specific_info(struct readelf * re)4521 dump_mips_specific_info(struct readelf *re)
4522 {
4523 struct section *s;
4524 int i, options_found;
4525
4526 options_found = 0;
4527 s = NULL;
4528 for (i = 0; (size_t) i < re->shnum; i++) {
4529 s = &re->sl[i];
4530 if (s->name != NULL && (!strcmp(s->name, ".MIPS.options") ||
4531 (s->type == SHT_MIPS_OPTIONS))) {
4532 dump_mips_options(re, s);
4533 options_found = 1;
4534 }
4535 }
4536
4537 /*
4538 * According to SGI mips64 spec, .reginfo should be ignored if
4539 * .MIPS.options section is present.
4540 */
4541 if (!options_found) {
4542 for (i = 0; (size_t) i < re->shnum; i++) {
4543 s = &re->sl[i];
4544 if (s->name != NULL && (!strcmp(s->name, ".reginfo") ||
4545 (s->type == SHT_MIPS_REGINFO)))
4546 dump_mips_reginfo(re, s);
4547 }
4548 }
4549 }
4550
4551 static void
dump_mips_reginfo(struct readelf * re,struct section * s)4552 dump_mips_reginfo(struct readelf *re, struct section *s)
4553 {
4554 Elf_Data *d;
4555 int elferr, len;
4556
4557 (void) elf_errno();
4558 if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
4559 elferr = elf_errno();
4560 if (elferr != 0)
4561 warnx("elf_rawdata failed: %s",
4562 elf_errmsg(elferr));
4563 return;
4564 }
4565 if (d->d_size <= 0)
4566 return;
4567 if (!get_ent_count(s, &len))
4568 return;
4569
4570 printf("\nSection '%s' contains %d entries:\n", s->name, len);
4571 dump_mips_odk_reginfo(re, d->d_buf, d->d_size);
4572 }
4573
4574 static void
dump_mips_options(struct readelf * re,struct section * s)4575 dump_mips_options(struct readelf *re, struct section *s)
4576 {
4577 Elf_Data *d;
4578 uint32_t info;
4579 uint16_t sndx;
4580 uint8_t *p, *pe;
4581 uint8_t kind, size;
4582 int elferr;
4583
4584 (void) elf_errno();
4585 if ((d = elf_rawdata(s->scn, NULL)) == NULL) {
4586 elferr = elf_errno();
4587 if (elferr != 0)
4588 warnx("elf_rawdata failed: %s",
4589 elf_errmsg(elferr));
4590 return;
4591 }
4592 if (d->d_size == 0)
4593 return;
4594
4595 printf("\nSection %s contains:\n", s->name);
4596 p = d->d_buf;
4597 pe = p + d->d_size;
4598 while (p < pe) {
4599 if (pe - p < 8) {
4600 warnx("Truncated MIPS option header");
4601 return;
4602 }
4603 kind = re->dw_decode(&p, 1);
4604 size = re->dw_decode(&p, 1);
4605 sndx = re->dw_decode(&p, 2);
4606 info = re->dw_decode(&p, 4);
4607 if (size < 8 || size - 8 > pe - p) {
4608 warnx("Malformed MIPS option header");
4609 return;
4610 }
4611 size -= 8;
4612 switch (kind) {
4613 case ODK_REGINFO:
4614 dump_mips_odk_reginfo(re, p, size);
4615 break;
4616 case ODK_EXCEPTIONS:
4617 printf(" EXCEPTIONS FPU_MIN: %#x\n",
4618 info & OEX_FPU_MIN);
4619 printf("%11.11s FPU_MAX: %#x\n", "",
4620 info & OEX_FPU_MAX);
4621 dump_mips_option_flags("", mips_exceptions_option,
4622 info);
4623 break;
4624 case ODK_PAD:
4625 printf(" %-10.10s section: %ju\n", "OPAD",
4626 (uintmax_t) sndx);
4627 dump_mips_option_flags("", mips_pad_option, info);
4628 break;
4629 case ODK_HWPATCH:
4630 dump_mips_option_flags("HWPATCH", mips_hwpatch_option,
4631 info);
4632 break;
4633 case ODK_HWAND:
4634 dump_mips_option_flags("HWAND", mips_hwa_option, info);
4635 break;
4636 case ODK_HWOR:
4637 dump_mips_option_flags("HWOR", mips_hwo_option, info);
4638 break;
4639 case ODK_FILL:
4640 printf(" %-10.10s %#jx\n", "FILL", (uintmax_t) info);
4641 break;
4642 case ODK_TAGS:
4643 printf(" %-10.10s\n", "TAGS");
4644 break;
4645 case ODK_GP_GROUP:
4646 printf(" %-10.10s GP group number: %#x\n", "GP_GROUP",
4647 info & 0xFFFF);
4648 if (info & 0x10000)
4649 printf(" %-10.10s GP group is "
4650 "self-contained\n", "");
4651 break;
4652 case ODK_IDENT:
4653 printf(" %-10.10s default GP group number: %#x\n",
4654 "IDENT", info & 0xFFFF);
4655 if (info & 0x10000)
4656 printf(" %-10.10s default GP group is "
4657 "self-contained\n", "");
4658 break;
4659 case ODK_PAGESIZE:
4660 printf(" %-10.10s\n", "PAGESIZE");
4661 break;
4662 default:
4663 break;
4664 }
4665 p += size;
4666 }
4667 }
4668
4669 static void
dump_mips_option_flags(const char * name,struct mips_option * opt,uint64_t info)4670 dump_mips_option_flags(const char *name, struct mips_option *opt, uint64_t info)
4671 {
4672 int first;
4673
4674 first = 1;
4675 for (; opt->desc != NULL; opt++) {
4676 if (info & opt->flag) {
4677 printf(" %-10.10s %s\n", first ? name : "",
4678 opt->desc);
4679 first = 0;
4680 }
4681 }
4682 }
4683
4684 static void
dump_mips_odk_reginfo(struct readelf * re,uint8_t * p,size_t sz)4685 dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz)
4686 {
4687 uint32_t ri_gprmask;
4688 uint32_t ri_cprmask[4];
4689 uint64_t ri_gp_value;
4690 uint8_t *pe;
4691 int i;
4692
4693 pe = p + sz;
4694 while (p < pe) {
4695 ri_gprmask = re->dw_decode(&p, 4);
4696 /* Skip ri_pad padding field for mips64. */
4697 if (re->ec == ELFCLASS64)
4698 re->dw_decode(&p, 4);
4699 for (i = 0; i < 4; i++)
4700 ri_cprmask[i] = re->dw_decode(&p, 4);
4701 if (re->ec == ELFCLASS32)
4702 ri_gp_value = re->dw_decode(&p, 4);
4703 else
4704 ri_gp_value = re->dw_decode(&p, 8);
4705 printf(" %s ", option_kind(ODK_REGINFO));
4706 printf("ri_gprmask: 0x%08jx\n", (uintmax_t) ri_gprmask);
4707 for (i = 0; i < 4; i++)
4708 printf("%11.11s ri_cprmask[%d]: 0x%08jx\n", "", i,
4709 (uintmax_t) ri_cprmask[i]);
4710 printf("%12.12s", "");
4711 printf("ri_gp_value: %#jx\n", (uintmax_t) ri_gp_value);
4712 }
4713 }
4714
4715 static void
dump_arch_specific_info(struct readelf * re)4716 dump_arch_specific_info(struct readelf *re)
4717 {
4718
4719 dump_liblist(re);
4720 dump_attributes(re);
4721
4722 switch (re->ehdr.e_machine) {
4723 case EM_MIPS:
4724 case EM_MIPS_RS3_LE:
4725 dump_mips_specific_info(re);
4726 default:
4727 break;
4728 }
4729 }
4730
4731 static const char *
dwarf_regname(struct readelf * re,unsigned int num)4732 dwarf_regname(struct readelf *re, unsigned int num)
4733 {
4734 static char rx[32];
4735 const char *rn;
4736
4737 if ((rn = dwarf_reg(re->ehdr.e_machine, num)) != NULL)
4738 return (rn);
4739
4740 snprintf(rx, sizeof(rx), "r%u", num);
4741
4742 return (rx);
4743 }
4744
4745 static void
dump_dwarf_line(struct readelf * re)4746 dump_dwarf_line(struct readelf *re)
4747 {
4748 struct section *s;
4749 Dwarf_Die die;
4750 Dwarf_Error de;
4751 Dwarf_Half tag, version, pointer_size;
4752 Dwarf_Unsigned offset, endoff, length, hdrlen, dirndx, mtime, fsize;
4753 Dwarf_Small minlen, defstmt, lrange, opbase, oplen;
4754 Elf_Data *d;
4755 char *pn;
4756 uint64_t address, file, line, column, isa, opsize, udelta;
4757 int64_t sdelta;
4758 uint8_t *p, *pe;
4759 int8_t lbase;
4760 int i, is_stmt, dwarf_size, elferr, ret;
4761
4762 printf("\nDump of debug contents of section .debug_line:\n");
4763
4764 s = NULL;
4765 for (i = 0; (size_t) i < re->shnum; i++) {
4766 s = &re->sl[i];
4767 if (s->name != NULL && !strcmp(s->name, ".debug_line"))
4768 break;
4769 }
4770 if ((size_t) i >= re->shnum)
4771 return;
4772
4773 (void) elf_errno();
4774 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
4775 elferr = elf_errno();
4776 if (elferr != 0)
4777 warnx("elf_getdata failed: %s", elf_errmsg(-1));
4778 return;
4779 }
4780 if (d->d_size <= 0)
4781 return;
4782
4783 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL,
4784 NULL, &de)) == DW_DLV_OK) {
4785 die = NULL;
4786 while (dwarf_siblingof(re->dbg, die, &die, &de) == DW_DLV_OK) {
4787 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
4788 warnx("dwarf_tag failed: %s",
4789 dwarf_errmsg(de));
4790 return;
4791 }
4792 /* XXX: What about DW_TAG_partial_unit? */
4793 if (tag == DW_TAG_compile_unit)
4794 break;
4795 }
4796 if (die == NULL) {
4797 warnx("could not find DW_TAG_compile_unit die");
4798 return;
4799 }
4800 if (dwarf_attrval_unsigned(die, DW_AT_stmt_list, &offset,
4801 &de) != DW_DLV_OK)
4802 continue;
4803
4804 length = re->dw_read(d, &offset, 4);
4805 if (length == 0xffffffff) {
4806 dwarf_size = 8;
4807 length = re->dw_read(d, &offset, 8);
4808 } else
4809 dwarf_size = 4;
4810
4811 if (length > d->d_size - offset) {
4812 warnx("invalid .dwarf_line section");
4813 continue;
4814 }
4815
4816 endoff = offset + length;
4817 pe = (uint8_t *) d->d_buf + endoff;
4818 version = re->dw_read(d, &offset, 2);
4819 hdrlen = re->dw_read(d, &offset, dwarf_size);
4820 minlen = re->dw_read(d, &offset, 1);
4821 defstmt = re->dw_read(d, &offset, 1);
4822 lbase = re->dw_read(d, &offset, 1);
4823 lrange = re->dw_read(d, &offset, 1);
4824 opbase = re->dw_read(d, &offset, 1);
4825
4826 printf("\n");
4827 printf(" Length:\t\t\t%ju\n", (uintmax_t) length);
4828 printf(" DWARF version:\t\t%u\n", version);
4829 printf(" Prologue Length:\t\t%ju\n", (uintmax_t) hdrlen);
4830 printf(" Minimum Instruction Length:\t%u\n", minlen);
4831 printf(" Initial value of 'is_stmt':\t%u\n", defstmt);
4832 printf(" Line Base:\t\t\t%d\n", lbase);
4833 printf(" Line Range:\t\t\t%u\n", lrange);
4834 printf(" Opcode Base:\t\t\t%u\n", opbase);
4835 (void) dwarf_get_address_size(re->dbg, &pointer_size, &de);
4836 printf(" (Pointer size:\t\t%u)\n", pointer_size);
4837
4838 printf("\n");
4839 printf(" Opcodes:\n");
4840 for (i = 1; i < opbase; i++) {
4841 oplen = re->dw_read(d, &offset, 1);
4842 printf(" Opcode %d has %u args\n", i, oplen);
4843 }
4844
4845 printf("\n");
4846 printf(" The Directory Table:\n");
4847 p = (uint8_t *) d->d_buf + offset;
4848 while (*p != '\0') {
4849 printf(" %s\n", (char *) p);
4850 p += strlen((char *) p) + 1;
4851 }
4852
4853 p++;
4854 printf("\n");
4855 printf(" The File Name Table:\n");
4856 printf(" Entry\tDir\tTime\tSize\tName\n");
4857 i = 0;
4858 while (*p != '\0') {
4859 i++;
4860 pn = (char *) p;
4861 p += strlen(pn) + 1;
4862 dirndx = _decode_uleb128(&p, pe);
4863 mtime = _decode_uleb128(&p, pe);
4864 fsize = _decode_uleb128(&p, pe);
4865 printf(" %d\t%ju\t%ju\t%ju\t%s\n", i,
4866 (uintmax_t) dirndx, (uintmax_t) mtime,
4867 (uintmax_t) fsize, pn);
4868 }
4869
4870 #define RESET_REGISTERS \
4871 do { \
4872 address = 0; \
4873 file = 1; \
4874 line = 1; \
4875 column = 0; \
4876 is_stmt = defstmt; \
4877 } while(0)
4878
4879 #define LINE(x) (lbase + (((x) - opbase) % lrange))
4880 #define ADDRESS(x) ((((x) - opbase) / lrange) * minlen)
4881
4882 p++;
4883 printf("\n");
4884 printf(" Line Number Statements:\n");
4885
4886 RESET_REGISTERS;
4887
4888 while (p < pe) {
4889
4890 if (*p == 0) {
4891 /*
4892 * Extended Opcodes.
4893 */
4894 p++;
4895 opsize = _decode_uleb128(&p, pe);
4896 printf(" Extended opcode %u: ", *p);
4897 switch (*p) {
4898 case DW_LNE_end_sequence:
4899 p++;
4900 RESET_REGISTERS;
4901 printf("End of Sequence\n");
4902 break;
4903 case DW_LNE_set_address:
4904 p++;
4905 address = re->dw_decode(&p,
4906 pointer_size);
4907 printf("set Address to %#jx\n",
4908 (uintmax_t) address);
4909 break;
4910 case DW_LNE_define_file:
4911 p++;
4912 pn = (char *) p;
4913 p += strlen(pn) + 1;
4914 dirndx = _decode_uleb128(&p, pe);
4915 mtime = _decode_uleb128(&p, pe);
4916 fsize = _decode_uleb128(&p, pe);
4917 printf("define new file: %s\n", pn);
4918 break;
4919 default:
4920 /* Unrecognized extened opcodes. */
4921 p += opsize;
4922 printf("unknown opcode\n");
4923 }
4924 } else if (*p > 0 && *p < opbase) {
4925 /*
4926 * Standard Opcodes.
4927 */
4928 switch(*p++) {
4929 case DW_LNS_copy:
4930 printf(" Copy\n");
4931 break;
4932 case DW_LNS_advance_pc:
4933 udelta = _decode_uleb128(&p, pe) *
4934 minlen;
4935 address += udelta;
4936 printf(" Advance PC by %ju to %#jx\n",
4937 (uintmax_t) udelta,
4938 (uintmax_t) address);
4939 break;
4940 case DW_LNS_advance_line:
4941 sdelta = _decode_sleb128(&p, pe);
4942 line += sdelta;
4943 printf(" Advance Line by %jd to %ju\n",
4944 (intmax_t) sdelta,
4945 (uintmax_t) line);
4946 break;
4947 case DW_LNS_set_file:
4948 file = _decode_uleb128(&p, pe);
4949 printf(" Set File to %ju\n",
4950 (uintmax_t) file);
4951 break;
4952 case DW_LNS_set_column:
4953 column = _decode_uleb128(&p, pe);
4954 printf(" Set Column to %ju\n",
4955 (uintmax_t) column);
4956 break;
4957 case DW_LNS_negate_stmt:
4958 is_stmt = !is_stmt;
4959 printf(" Set is_stmt to %d\n", is_stmt);
4960 break;
4961 case DW_LNS_set_basic_block:
4962 printf(" Set basic block flag\n");
4963 break;
4964 case DW_LNS_const_add_pc:
4965 address += ADDRESS(255);
4966 printf(" Advance PC by constant %ju"
4967 " to %#jx\n",
4968 (uintmax_t) ADDRESS(255),
4969 (uintmax_t) address);
4970 break;
4971 case DW_LNS_fixed_advance_pc:
4972 udelta = re->dw_decode(&p, 2);
4973 address += udelta;
4974 printf(" Advance PC by fixed value "
4975 "%ju to %#jx\n",
4976 (uintmax_t) udelta,
4977 (uintmax_t) address);
4978 break;
4979 case DW_LNS_set_prologue_end:
4980 printf(" Set prologue end flag\n");
4981 break;
4982 case DW_LNS_set_epilogue_begin:
4983 printf(" Set epilogue begin flag\n");
4984 break;
4985 case DW_LNS_set_isa:
4986 isa = _decode_uleb128(&p, pe);
4987 printf(" Set isa to %ju\n", isa);
4988 break;
4989 default:
4990 /* Unrecognized extended opcodes. */
4991 printf(" Unknown extended opcode %u\n",
4992 *(p - 1));
4993 break;
4994 }
4995
4996 } else {
4997 /*
4998 * Special Opcodes.
4999 */
5000 line += LINE(*p);
5001 address += ADDRESS(*p);
5002 printf(" Special opcode %u: advance Address "
5003 "by %ju to %#jx and Line by %jd to %ju\n",
5004 *p - opbase, (uintmax_t) ADDRESS(*p),
5005 (uintmax_t) address, (intmax_t) LINE(*p),
5006 (uintmax_t) line);
5007 p++;
5008 }
5009
5010
5011 }
5012 }
5013 if (ret == DW_DLV_ERROR)
5014 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
5015
5016 #undef RESET_REGISTERS
5017 #undef LINE
5018 #undef ADDRESS
5019 }
5020
5021 static void
dump_dwarf_line_decoded(struct readelf * re)5022 dump_dwarf_line_decoded(struct readelf *re)
5023 {
5024 Dwarf_Die die;
5025 Dwarf_Line *linebuf, ln;
5026 Dwarf_Addr lineaddr;
5027 Dwarf_Signed linecount, srccount;
5028 Dwarf_Unsigned lineno, fn;
5029 Dwarf_Error de;
5030 const char *dir, *file;
5031 char **srcfiles;
5032 int i, ret;
5033
5034 printf("Decoded dump of debug contents of section .debug_line:\n\n");
5035 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL,
5036 NULL, &de)) == DW_DLV_OK) {
5037 if (dwarf_siblingof(re->dbg, NULL, &die, &de) != DW_DLV_OK)
5038 continue;
5039 if (dwarf_attrval_string(die, DW_AT_name, &file, &de) !=
5040 DW_DLV_OK)
5041 file = NULL;
5042 if (dwarf_attrval_string(die, DW_AT_comp_dir, &dir, &de) !=
5043 DW_DLV_OK)
5044 dir = NULL;
5045 printf("CU: ");
5046 if (dir && file)
5047 printf("%s/", dir);
5048 if (file)
5049 printf("%s", file);
5050 putchar('\n');
5051 printf("%-37s %11s %s\n", "Filename", "Line Number",
5052 "Starting Address");
5053 if (dwarf_srclines(die, &linebuf, &linecount, &de) != DW_DLV_OK)
5054 continue;
5055 if (dwarf_srcfiles(die, &srcfiles, &srccount, &de) != DW_DLV_OK)
5056 continue;
5057 for (i = 0; i < linecount; i++) {
5058 ln = linebuf[i];
5059 if (dwarf_line_srcfileno(ln, &fn, &de) != DW_DLV_OK)
5060 continue;
5061 if (dwarf_lineno(ln, &lineno, &de) != DW_DLV_OK)
5062 continue;
5063 if (dwarf_lineaddr(ln, &lineaddr, &de) != DW_DLV_OK)
5064 continue;
5065 printf("%-37s %11ju %#18jx\n",
5066 basename(srcfiles[fn - 1]), (uintmax_t) lineno,
5067 (uintmax_t) lineaddr);
5068 }
5069 putchar('\n');
5070 }
5071 }
5072
5073 static void
dump_dwarf_die(struct readelf * re,Dwarf_Die die,int level)5074 dump_dwarf_die(struct readelf *re, Dwarf_Die die, int level)
5075 {
5076 Dwarf_Attribute *attr_list;
5077 Dwarf_Die ret_die;
5078 Dwarf_Off dieoff, cuoff, culen, attroff;
5079 Dwarf_Unsigned ate, lang, v_udata, v_sig;
5080 Dwarf_Signed attr_count, v_sdata;
5081 Dwarf_Off v_off;
5082 Dwarf_Addr v_addr;
5083 Dwarf_Half tag, attr, form;
5084 Dwarf_Block *v_block;
5085 Dwarf_Bool v_bool, is_info;
5086 Dwarf_Sig8 v_sig8;
5087 Dwarf_Error de;
5088 Dwarf_Ptr v_expr;
5089 const char *tag_str, *attr_str, *ate_str, *lang_str;
5090 char unk_tag[32], unk_attr[32];
5091 char *v_str;
5092 uint8_t *b, *p;
5093 int i, j, abc, ret;
5094
5095 if (dwarf_dieoffset(die, &dieoff, &de) != DW_DLV_OK) {
5096 warnx("dwarf_dieoffset failed: %s", dwarf_errmsg(de));
5097 goto cont_search;
5098 }
5099
5100 printf(" <%d><%jx>: ", level, (uintmax_t) dieoff);
5101
5102 if (dwarf_die_CU_offset_range(die, &cuoff, &culen, &de) != DW_DLV_OK) {
5103 warnx("dwarf_die_CU_offset_range failed: %s",
5104 dwarf_errmsg(de));
5105 cuoff = 0;
5106 }
5107
5108 abc = dwarf_die_abbrev_code(die);
5109 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
5110 warnx("dwarf_tag failed: %s", dwarf_errmsg(de));
5111 goto cont_search;
5112 }
5113 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) {
5114 snprintf(unk_tag, sizeof(unk_tag), "[Unknown Tag: %#x]", tag);
5115 tag_str = unk_tag;
5116 }
5117
5118 printf("Abbrev Number: %d (%s)\n", abc, tag_str);
5119
5120 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) !=
5121 DW_DLV_OK) {
5122 if (ret == DW_DLV_ERROR)
5123 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de));
5124 goto cont_search;
5125 }
5126
5127 for (i = 0; i < attr_count; i++) {
5128 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) {
5129 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de));
5130 continue;
5131 }
5132 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) {
5133 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de));
5134 continue;
5135 }
5136 if (dwarf_get_AT_name(attr, &attr_str) != DW_DLV_OK) {
5137 snprintf(unk_attr, sizeof(unk_attr),
5138 "[Unknown AT: %#x]", attr);
5139 attr_str = unk_attr;
5140 }
5141 if (dwarf_attroffset(attr_list[i], &attroff, &de) !=
5142 DW_DLV_OK) {
5143 warnx("dwarf_attroffset failed: %s", dwarf_errmsg(de));
5144 attroff = 0;
5145 }
5146 printf(" <%jx> %-18s: ", (uintmax_t) attroff, attr_str);
5147 switch (form) {
5148 case DW_FORM_ref_addr:
5149 case DW_FORM_sec_offset:
5150 if (dwarf_global_formref(attr_list[i], &v_off, &de) !=
5151 DW_DLV_OK) {
5152 warnx("dwarf_global_formref failed: %s",
5153 dwarf_errmsg(de));
5154 continue;
5155 }
5156 if (form == DW_FORM_ref_addr)
5157 printf("<0x%jx>", (uintmax_t) v_off);
5158 else
5159 printf("0x%jx", (uintmax_t) v_off);
5160 break;
5161
5162 case DW_FORM_ref1:
5163 case DW_FORM_ref2:
5164 case DW_FORM_ref4:
5165 case DW_FORM_ref8:
5166 case DW_FORM_ref_udata:
5167 if (dwarf_formref(attr_list[i], &v_off, &de) !=
5168 DW_DLV_OK) {
5169 warnx("dwarf_formref failed: %s",
5170 dwarf_errmsg(de));
5171 continue;
5172 }
5173 v_off += cuoff;
5174 printf("<0x%jx>", (uintmax_t) v_off);
5175 break;
5176
5177 case DW_FORM_addr:
5178 if (dwarf_formaddr(attr_list[i], &v_addr, &de) !=
5179 DW_DLV_OK) {
5180 warnx("dwarf_formaddr failed: %s",
5181 dwarf_errmsg(de));
5182 continue;
5183 }
5184 printf("%#jx", (uintmax_t) v_addr);
5185 break;
5186
5187 case DW_FORM_data1:
5188 case DW_FORM_data2:
5189 case DW_FORM_data4:
5190 case DW_FORM_data8:
5191 case DW_FORM_udata:
5192 if (dwarf_formudata(attr_list[i], &v_udata, &de) !=
5193 DW_DLV_OK) {
5194 warnx("dwarf_formudata failed: %s",
5195 dwarf_errmsg(de));
5196 continue;
5197 }
5198 if (attr == DW_AT_high_pc)
5199 printf("0x%jx", (uintmax_t) v_udata);
5200 else
5201 printf("%ju", (uintmax_t) v_udata);
5202 break;
5203
5204 case DW_FORM_sdata:
5205 if (dwarf_formsdata(attr_list[i], &v_sdata, &de) !=
5206 DW_DLV_OK) {
5207 warnx("dwarf_formudata failed: %s",
5208 dwarf_errmsg(de));
5209 continue;
5210 }
5211 printf("%jd", (intmax_t) v_sdata);
5212 break;
5213
5214 case DW_FORM_flag:
5215 if (dwarf_formflag(attr_list[i], &v_bool, &de) !=
5216 DW_DLV_OK) {
5217 warnx("dwarf_formflag failed: %s",
5218 dwarf_errmsg(de));
5219 continue;
5220 }
5221 printf("%jd", (intmax_t) v_bool);
5222 break;
5223
5224 case DW_FORM_flag_present:
5225 putchar('1');
5226 break;
5227
5228 case DW_FORM_string:
5229 case DW_FORM_strp:
5230 if (dwarf_formstring(attr_list[i], &v_str, &de) !=
5231 DW_DLV_OK) {
5232 warnx("dwarf_formstring failed: %s",
5233 dwarf_errmsg(de));
5234 continue;
5235 }
5236 if (form == DW_FORM_string)
5237 printf("%s", v_str);
5238 else
5239 printf("(indirect string) %s", v_str);
5240 break;
5241
5242 case DW_FORM_block:
5243 case DW_FORM_block1:
5244 case DW_FORM_block2:
5245 case DW_FORM_block4:
5246 if (dwarf_formblock(attr_list[i], &v_block, &de) !=
5247 DW_DLV_OK) {
5248 warnx("dwarf_formblock failed: %s",
5249 dwarf_errmsg(de));
5250 continue;
5251 }
5252 printf("%ju byte block:", (uintmax_t) v_block->bl_len);
5253 b = v_block->bl_data;
5254 for (j = 0; (Dwarf_Unsigned) j < v_block->bl_len; j++)
5255 printf(" %x", b[j]);
5256 printf("\t(");
5257 dump_dwarf_block(re, v_block->bl_data, v_block->bl_len);
5258 putchar(')');
5259 break;
5260
5261 case DW_FORM_exprloc:
5262 if (dwarf_formexprloc(attr_list[i], &v_udata, &v_expr,
5263 &de) != DW_DLV_OK) {
5264 warnx("dwarf_formexprloc failed: %s",
5265 dwarf_errmsg(de));
5266 continue;
5267 }
5268 printf("%ju byte block:", (uintmax_t) v_udata);
5269 b = v_expr;
5270 for (j = 0; (Dwarf_Unsigned) j < v_udata; j++)
5271 printf(" %x", b[j]);
5272 printf("\t(");
5273 dump_dwarf_block(re, v_expr, v_udata);
5274 putchar(')');
5275 break;
5276
5277 case DW_FORM_ref_sig8:
5278 if (dwarf_formsig8(attr_list[i], &v_sig8, &de) !=
5279 DW_DLV_OK) {
5280 warnx("dwarf_formsig8 failed: %s",
5281 dwarf_errmsg(de));
5282 continue;
5283 }
5284 p = (uint8_t *)(uintptr_t) &v_sig8.signature[0];
5285 v_sig = re->dw_decode(&p, 8);
5286 printf("signature: 0x%jx", (uintmax_t) v_sig);
5287 }
5288 switch (attr) {
5289 case DW_AT_encoding:
5290 if (dwarf_attrval_unsigned(die, attr, &ate, &de) !=
5291 DW_DLV_OK)
5292 break;
5293 if (dwarf_get_ATE_name(ate, &ate_str) != DW_DLV_OK)
5294 ate_str = "DW_ATE_UNKNOWN";
5295 printf("\t(%s)", &ate_str[strlen("DW_ATE_")]);
5296 break;
5297
5298 case DW_AT_language:
5299 if (dwarf_attrval_unsigned(die, attr, &lang, &de) !=
5300 DW_DLV_OK)
5301 break;
5302 if (dwarf_get_LANG_name(lang, &lang_str) != DW_DLV_OK)
5303 break;
5304 printf("\t(%s)", &lang_str[strlen("DW_LANG_")]);
5305 break;
5306
5307 case DW_AT_location:
5308 case DW_AT_string_length:
5309 case DW_AT_return_addr:
5310 case DW_AT_data_member_location:
5311 case DW_AT_frame_base:
5312 case DW_AT_segment:
5313 case DW_AT_static_link:
5314 case DW_AT_use_location:
5315 case DW_AT_vtable_elem_location:
5316 switch (form) {
5317 case DW_FORM_data4:
5318 case DW_FORM_data8:
5319 case DW_FORM_sec_offset:
5320 printf("\t(location list)");
5321 break;
5322 default:
5323 break;
5324 }
5325
5326 default:
5327 break;
5328 }
5329 putchar('\n');
5330 }
5331
5332
5333 cont_search:
5334 /* Search children. */
5335 ret = dwarf_child(die, &ret_die, &de);
5336 if (ret == DW_DLV_ERROR)
5337 warnx("dwarf_child: %s", dwarf_errmsg(de));
5338 else if (ret == DW_DLV_OK)
5339 dump_dwarf_die(re, ret_die, level + 1);
5340
5341 /* Search sibling. */
5342 is_info = dwarf_get_die_infotypes_flag(die);
5343 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de);
5344 if (ret == DW_DLV_ERROR)
5345 warnx("dwarf_siblingof: %s", dwarf_errmsg(de));
5346 else if (ret == DW_DLV_OK)
5347 dump_dwarf_die(re, ret_die, level);
5348
5349 dwarf_dealloc(re->dbg, die, DW_DLA_DIE);
5350 }
5351
5352 static void
set_cu_context(struct readelf * re,Dwarf_Half psize,Dwarf_Half osize,Dwarf_Half ver)5353 set_cu_context(struct readelf *re, Dwarf_Half psize, Dwarf_Half osize,
5354 Dwarf_Half ver)
5355 {
5356
5357 re->cu_psize = psize;
5358 re->cu_osize = osize;
5359 re->cu_ver = ver;
5360 }
5361
5362 static void
dump_dwarf_info(struct readelf * re,Dwarf_Bool is_info)5363 dump_dwarf_info(struct readelf *re, Dwarf_Bool is_info)
5364 {
5365 struct section *s;
5366 Dwarf_Die die;
5367 Dwarf_Error de;
5368 Dwarf_Half tag, version, pointer_size, off_size;
5369 Dwarf_Off cu_offset, cu_length;
5370 Dwarf_Off aboff;
5371 Dwarf_Unsigned typeoff;
5372 Dwarf_Sig8 sig8;
5373 Dwarf_Unsigned sig;
5374 uint8_t *p;
5375 const char *sn;
5376 int i, ret;
5377
5378 sn = is_info ? ".debug_info" : ".debug_types";
5379
5380 s = NULL;
5381 for (i = 0; (size_t) i < re->shnum; i++) {
5382 s = &re->sl[i];
5383 if (s->name != NULL && !strcmp(s->name, sn))
5384 break;
5385 }
5386 if ((size_t) i >= re->shnum)
5387 return;
5388
5389 do {
5390 printf("\nDump of debug contents of section %s:\n", sn);
5391
5392 while ((ret = dwarf_next_cu_header_c(re->dbg, is_info, NULL,
5393 &version, &aboff, &pointer_size, &off_size, NULL, &sig8,
5394 &typeoff, NULL, &de)) == DW_DLV_OK) {
5395 set_cu_context(re, pointer_size, off_size, version);
5396 die = NULL;
5397 while (dwarf_siblingof_b(re->dbg, die, &die, is_info,
5398 &de) == DW_DLV_OK) {
5399 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
5400 warnx("dwarf_tag failed: %s",
5401 dwarf_errmsg(de));
5402 continue;
5403 }
5404 /* XXX: What about DW_TAG_partial_unit? */
5405 if ((is_info && tag == DW_TAG_compile_unit) ||
5406 (!is_info && tag == DW_TAG_type_unit))
5407 break;
5408 }
5409 if (die == NULL && is_info) {
5410 warnx("could not find DW_TAG_compile_unit "
5411 "die");
5412 continue;
5413 } else if (die == NULL && !is_info) {
5414 warnx("could not find DW_TAG_type_unit die");
5415 continue;
5416 }
5417
5418 if (dwarf_die_CU_offset_range(die, &cu_offset,
5419 &cu_length, &de) != DW_DLV_OK) {
5420 warnx("dwarf_die_CU_offset failed: %s",
5421 dwarf_errmsg(de));
5422 continue;
5423 }
5424
5425 cu_length -= off_size == 4 ? 4 : 12;
5426
5427 sig = 0;
5428 if (!is_info) {
5429 p = (uint8_t *)(uintptr_t) &sig8.signature[0];
5430 sig = re->dw_decode(&p, 8);
5431 }
5432
5433 printf("\n Type Unit @ offset 0x%jx:\n",
5434 (uintmax_t) cu_offset);
5435 printf(" Length:\t\t%#jx (%d-bit)\n",
5436 (uintmax_t) cu_length, off_size == 4 ? 32 : 64);
5437 printf(" Version:\t\t%u\n", version);
5438 printf(" Abbrev Offset:\t0x%jx\n",
5439 (uintmax_t) aboff);
5440 printf(" Pointer Size:\t%u\n", pointer_size);
5441 if (!is_info) {
5442 printf(" Signature:\t\t0x%016jx\n",
5443 (uintmax_t) sig);
5444 printf(" Type Offset:\t0x%jx\n",
5445 (uintmax_t) typeoff);
5446 }
5447
5448 dump_dwarf_die(re, die, 0);
5449 }
5450 if (ret == DW_DLV_ERROR)
5451 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
5452 if (is_info)
5453 break;
5454 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK);
5455 }
5456
5457 static void
dump_dwarf_abbrev(struct readelf * re)5458 dump_dwarf_abbrev(struct readelf *re)
5459 {
5460 Dwarf_Abbrev ab;
5461 Dwarf_Off aboff, atoff;
5462 Dwarf_Unsigned length, attr_count;
5463 Dwarf_Signed flag, form;
5464 Dwarf_Half tag, attr;
5465 Dwarf_Error de;
5466 const char *tag_str, *attr_str, *form_str;
5467 char unk_tag[32], unk_attr[32], unk_form[32];
5468 int i, j, ret;
5469
5470 printf("\nContents of section .debug_abbrev:\n\n");
5471
5472 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, &aboff,
5473 NULL, NULL, &de)) == DW_DLV_OK) {
5474 printf(" Number TAG\n");
5475 i = 0;
5476 while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length,
5477 &attr_count, &de)) == DW_DLV_OK) {
5478 if (length == 1) {
5479 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV);
5480 break;
5481 }
5482 aboff += length;
5483 printf("%4d", ++i);
5484 if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) {
5485 warnx("dwarf_get_abbrev_tag failed: %s",
5486 dwarf_errmsg(de));
5487 goto next_abbrev;
5488 }
5489 if (dwarf_get_TAG_name(tag, &tag_str) != DW_DLV_OK) {
5490 snprintf(unk_tag, sizeof(unk_tag),
5491 "[Unknown Tag: %#x]", tag);
5492 tag_str = unk_tag;
5493 }
5494 if (dwarf_get_abbrev_children_flag(ab, &flag, &de) !=
5495 DW_DLV_OK) {
5496 warnx("dwarf_get_abbrev_children_flag failed:"
5497 " %s", dwarf_errmsg(de));
5498 goto next_abbrev;
5499 }
5500 printf(" %s %s\n", tag_str,
5501 flag ? "[has children]" : "[no children]");
5502 for (j = 0; (Dwarf_Unsigned) j < attr_count; j++) {
5503 if (dwarf_get_abbrev_entry(ab, (Dwarf_Signed) j,
5504 &attr, &form, &atoff, &de) != DW_DLV_OK) {
5505 warnx("dwarf_get_abbrev_entry failed:"
5506 " %s", dwarf_errmsg(de));
5507 continue;
5508 }
5509 if (dwarf_get_AT_name(attr, &attr_str) !=
5510 DW_DLV_OK) {
5511 snprintf(unk_attr, sizeof(unk_attr),
5512 "[Unknown AT: %#x]", attr);
5513 attr_str = unk_attr;
5514 }
5515 if (dwarf_get_FORM_name(form, &form_str) !=
5516 DW_DLV_OK) {
5517 snprintf(unk_form, sizeof(unk_form),
5518 "[Unknown Form: %#x]",
5519 (Dwarf_Half) form);
5520 form_str = unk_form;
5521 }
5522 printf(" %-18s %s\n", attr_str, form_str);
5523 }
5524 next_abbrev:
5525 dwarf_dealloc(re->dbg, ab, DW_DLA_ABBREV);
5526 }
5527 if (ret != DW_DLV_OK)
5528 warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de));
5529 }
5530 if (ret == DW_DLV_ERROR)
5531 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
5532 }
5533
5534 static void
dump_dwarf_pubnames(struct readelf * re)5535 dump_dwarf_pubnames(struct readelf *re)
5536 {
5537 struct section *s;
5538 Dwarf_Off die_off;
5539 Dwarf_Unsigned offset, length, nt_cu_offset, nt_cu_length;
5540 Dwarf_Signed cnt;
5541 Dwarf_Global *globs;
5542 Dwarf_Half nt_version;
5543 Dwarf_Error de;
5544 Elf_Data *d;
5545 char *glob_name;
5546 int i, dwarf_size, elferr;
5547
5548 printf("\nContents of the .debug_pubnames section:\n");
5549
5550 s = NULL;
5551 for (i = 0; (size_t) i < re->shnum; i++) {
5552 s = &re->sl[i];
5553 if (s->name != NULL && !strcmp(s->name, ".debug_pubnames"))
5554 break;
5555 }
5556 if ((size_t) i >= re->shnum)
5557 return;
5558
5559 (void) elf_errno();
5560 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
5561 elferr = elf_errno();
5562 if (elferr != 0)
5563 warnx("elf_getdata failed: %s", elf_errmsg(-1));
5564 return;
5565 }
5566 if (d->d_size <= 0)
5567 return;
5568
5569 /* Read in .debug_pubnames section table header. */
5570 offset = 0;
5571 length = re->dw_read(d, &offset, 4);
5572 if (length == 0xffffffff) {
5573 dwarf_size = 8;
5574 length = re->dw_read(d, &offset, 8);
5575 } else
5576 dwarf_size = 4;
5577
5578 if (length > d->d_size - offset) {
5579 warnx("invalid .dwarf_pubnames section");
5580 return;
5581 }
5582
5583 nt_version = re->dw_read(d, &offset, 2);
5584 nt_cu_offset = re->dw_read(d, &offset, dwarf_size);
5585 nt_cu_length = re->dw_read(d, &offset, dwarf_size);
5586 printf(" Length:\t\t\t\t%ju\n", (uintmax_t) length);
5587 printf(" Version:\t\t\t\t%u\n", nt_version);
5588 printf(" Offset into .debug_info section:\t%ju\n",
5589 (uintmax_t) nt_cu_offset);
5590 printf(" Size of area in .debug_info section:\t%ju\n",
5591 (uintmax_t) nt_cu_length);
5592
5593 if (dwarf_get_globals(re->dbg, &globs, &cnt, &de) != DW_DLV_OK) {
5594 warnx("dwarf_get_globals failed: %s", dwarf_errmsg(de));
5595 return;
5596 }
5597
5598 printf("\n Offset Name\n");
5599 for (i = 0; i < cnt; i++) {
5600 if (dwarf_globname(globs[i], &glob_name, &de) != DW_DLV_OK) {
5601 warnx("dwarf_globname failed: %s", dwarf_errmsg(de));
5602 continue;
5603 }
5604 if (dwarf_global_die_offset(globs[i], &die_off, &de) !=
5605 DW_DLV_OK) {
5606 warnx("dwarf_global_die_offset failed: %s",
5607 dwarf_errmsg(de));
5608 continue;
5609 }
5610 printf(" %-11ju %s\n", (uintmax_t) die_off, glob_name);
5611 }
5612 }
5613
5614 static void
dump_dwarf_aranges(struct readelf * re)5615 dump_dwarf_aranges(struct readelf *re)
5616 {
5617 struct section *s;
5618 Dwarf_Arange *aranges;
5619 Dwarf_Addr start;
5620 Dwarf_Unsigned offset, length, as_cu_offset;
5621 Dwarf_Off die_off;
5622 Dwarf_Signed cnt;
5623 Dwarf_Half as_version, as_addrsz, as_segsz;
5624 Dwarf_Error de;
5625 Elf_Data *d;
5626 int i, dwarf_size, elferr;
5627
5628 printf("\nContents of section .debug_aranges:\n");
5629
5630 s = NULL;
5631 for (i = 0; (size_t) i < re->shnum; i++) {
5632 s = &re->sl[i];
5633 if (s->name != NULL && !strcmp(s->name, ".debug_aranges"))
5634 break;
5635 }
5636 if ((size_t) i >= re->shnum)
5637 return;
5638
5639 (void) elf_errno();
5640 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
5641 elferr = elf_errno();
5642 if (elferr != 0)
5643 warnx("elf_getdata failed: %s", elf_errmsg(-1));
5644 return;
5645 }
5646 if (d->d_size <= 0)
5647 return;
5648
5649 /* Read in the .debug_aranges section table header. */
5650 offset = 0;
5651 length = re->dw_read(d, &offset, 4);
5652 if (length == 0xffffffff) {
5653 dwarf_size = 8;
5654 length = re->dw_read(d, &offset, 8);
5655 } else
5656 dwarf_size = 4;
5657
5658 if (length > d->d_size - offset) {
5659 warnx("invalid .dwarf_aranges section");
5660 return;
5661 }
5662
5663 as_version = re->dw_read(d, &offset, 2);
5664 as_cu_offset = re->dw_read(d, &offset, dwarf_size);
5665 as_addrsz = re->dw_read(d, &offset, 1);
5666 as_segsz = re->dw_read(d, &offset, 1);
5667
5668 printf(" Length:\t\t\t%ju\n", (uintmax_t) length);
5669 printf(" Version:\t\t\t%u\n", as_version);
5670 printf(" Offset into .debug_info:\t%ju\n", (uintmax_t) as_cu_offset);
5671 printf(" Pointer Size:\t\t\t%u\n", as_addrsz);
5672 printf(" Segment Size:\t\t\t%u\n", as_segsz);
5673
5674 if (dwarf_get_aranges(re->dbg, &aranges, &cnt, &de) != DW_DLV_OK) {
5675 warnx("dwarf_get_aranges failed: %s", dwarf_errmsg(de));
5676 return;
5677 }
5678
5679 printf("\n Address Length\n");
5680 for (i = 0; i < cnt; i++) {
5681 if (dwarf_get_arange_info(aranges[i], &start, &length,
5682 &die_off, &de) != DW_DLV_OK) {
5683 warnx("dwarf_get_arange_info failed: %s",
5684 dwarf_errmsg(de));
5685 continue;
5686 }
5687 printf(" %08jx %ju\n", (uintmax_t) start,
5688 (uintmax_t) length);
5689 }
5690 }
5691
5692 static void
dump_dwarf_ranges_foreach(struct readelf * re,Dwarf_Die die,Dwarf_Addr base)5693 dump_dwarf_ranges_foreach(struct readelf *re, Dwarf_Die die, Dwarf_Addr base)
5694 {
5695 Dwarf_Attribute *attr_list;
5696 Dwarf_Ranges *ranges;
5697 Dwarf_Die ret_die;
5698 Dwarf_Error de;
5699 Dwarf_Addr base0;
5700 Dwarf_Half attr;
5701 Dwarf_Signed attr_count, cnt;
5702 Dwarf_Unsigned off, bytecnt;
5703 int i, j, ret;
5704
5705 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) !=
5706 DW_DLV_OK) {
5707 if (ret == DW_DLV_ERROR)
5708 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de));
5709 goto cont_search;
5710 }
5711
5712 for (i = 0; i < attr_count; i++) {
5713 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) {
5714 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de));
5715 continue;
5716 }
5717 if (attr != DW_AT_ranges)
5718 continue;
5719 if (dwarf_formudata(attr_list[i], &off, &de) != DW_DLV_OK) {
5720 warnx("dwarf_formudata failed: %s", dwarf_errmsg(de));
5721 continue;
5722 }
5723 if (dwarf_get_ranges(re->dbg, (Dwarf_Off) off, &ranges, &cnt,
5724 &bytecnt, &de) != DW_DLV_OK)
5725 continue;
5726 base0 = base;
5727 for (j = 0; j < cnt; j++) {
5728 printf(" %08jx ", (uintmax_t) off);
5729 if (ranges[j].dwr_type == DW_RANGES_END) {
5730 printf("%s\n", "<End of list>");
5731 continue;
5732 } else if (ranges[j].dwr_type ==
5733 DW_RANGES_ADDRESS_SELECTION) {
5734 base0 = ranges[j].dwr_addr2;
5735 continue;
5736 }
5737 if (re->ec == ELFCLASS32)
5738 printf("%08jx %08jx\n",
5739 ranges[j].dwr_addr1 + base0,
5740 ranges[j].dwr_addr2 + base0);
5741 else
5742 printf("%016jx %016jx\n",
5743 ranges[j].dwr_addr1 + base0,
5744 ranges[j].dwr_addr2 + base0);
5745 }
5746 }
5747
5748 cont_search:
5749 /* Search children. */
5750 ret = dwarf_child(die, &ret_die, &de);
5751 if (ret == DW_DLV_ERROR)
5752 warnx("dwarf_child: %s", dwarf_errmsg(de));
5753 else if (ret == DW_DLV_OK)
5754 dump_dwarf_ranges_foreach(re, ret_die, base);
5755
5756 /* Search sibling. */
5757 ret = dwarf_siblingof(re->dbg, die, &ret_die, &de);
5758 if (ret == DW_DLV_ERROR)
5759 warnx("dwarf_siblingof: %s", dwarf_errmsg(de));
5760 else if (ret == DW_DLV_OK)
5761 dump_dwarf_ranges_foreach(re, ret_die, base);
5762 }
5763
5764 static void
dump_dwarf_ranges(struct readelf * re)5765 dump_dwarf_ranges(struct readelf *re)
5766 {
5767 Dwarf_Ranges *ranges;
5768 Dwarf_Die die;
5769 Dwarf_Signed cnt;
5770 Dwarf_Unsigned bytecnt;
5771 Dwarf_Half tag;
5772 Dwarf_Error de;
5773 Dwarf_Unsigned lowpc;
5774 int ret;
5775
5776 if (dwarf_get_ranges(re->dbg, 0, &ranges, &cnt, &bytecnt, &de) !=
5777 DW_DLV_OK)
5778 return;
5779
5780 printf("Contents of the .debug_ranges section:\n\n");
5781 if (re->ec == ELFCLASS32)
5782 printf(" %-8s %-8s %s\n", "Offset", "Begin", "End");
5783 else
5784 printf(" %-8s %-16s %s\n", "Offset", "Begin", "End");
5785
5786 while ((ret = dwarf_next_cu_header(re->dbg, NULL, NULL, NULL, NULL,
5787 NULL, &de)) == DW_DLV_OK) {
5788 die = NULL;
5789 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK)
5790 continue;
5791 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
5792 warnx("dwarf_tag failed: %s", dwarf_errmsg(de));
5793 continue;
5794 }
5795 /* XXX: What about DW_TAG_partial_unit? */
5796 lowpc = 0;
5797 if (tag == DW_TAG_compile_unit) {
5798 if (dwarf_attrval_unsigned(die, DW_AT_low_pc, &lowpc,
5799 &de) != DW_DLV_OK)
5800 lowpc = 0;
5801 }
5802
5803 dump_dwarf_ranges_foreach(re, die, (Dwarf_Addr) lowpc);
5804 }
5805 putchar('\n');
5806 }
5807
5808 static void
dump_dwarf_macinfo(struct readelf * re)5809 dump_dwarf_macinfo(struct readelf *re)
5810 {
5811 Dwarf_Unsigned offset;
5812 Dwarf_Signed cnt;
5813 Dwarf_Macro_Details *md;
5814 Dwarf_Error de;
5815 const char *mi_str;
5816 char unk_mi[32];
5817 int i;
5818
5819 #define _MAX_MACINFO_ENTRY 65535
5820
5821 printf("\nContents of section .debug_macinfo:\n\n");
5822
5823 offset = 0;
5824 while (dwarf_get_macro_details(re->dbg, offset, _MAX_MACINFO_ENTRY,
5825 &cnt, &md, &de) == DW_DLV_OK) {
5826 for (i = 0; i < cnt; i++) {
5827 offset = md[i].dmd_offset + 1;
5828 if (md[i].dmd_type == 0)
5829 break;
5830 if (dwarf_get_MACINFO_name(md[i].dmd_type, &mi_str) !=
5831 DW_DLV_OK) {
5832 snprintf(unk_mi, sizeof(unk_mi),
5833 "[Unknown MACINFO: %#x]", md[i].dmd_type);
5834 mi_str = unk_mi;
5835 }
5836 printf(" %s", mi_str);
5837 switch (md[i].dmd_type) {
5838 case DW_MACINFO_define:
5839 case DW_MACINFO_undef:
5840 printf(" - lineno : %jd macro : %s\n",
5841 (intmax_t) md[i].dmd_lineno,
5842 md[i].dmd_macro);
5843 break;
5844 case DW_MACINFO_start_file:
5845 printf(" - lineno : %jd filenum : %jd\n",
5846 (intmax_t) md[i].dmd_lineno,
5847 (intmax_t) md[i].dmd_fileindex);
5848 break;
5849 default:
5850 putchar('\n');
5851 break;
5852 }
5853 }
5854 }
5855
5856 #undef _MAX_MACINFO_ENTRY
5857 }
5858
5859 static void
dump_dwarf_frame_inst(struct readelf * re,Dwarf_Cie cie,uint8_t * insts,Dwarf_Unsigned len,Dwarf_Unsigned caf,Dwarf_Signed daf,Dwarf_Addr pc,Dwarf_Debug dbg)5860 dump_dwarf_frame_inst(struct readelf *re, Dwarf_Cie cie, uint8_t *insts,
5861 Dwarf_Unsigned len, Dwarf_Unsigned caf, Dwarf_Signed daf, Dwarf_Addr pc,
5862 Dwarf_Debug dbg)
5863 {
5864 Dwarf_Frame_Op *oplist;
5865 Dwarf_Signed opcnt, delta;
5866 Dwarf_Small op;
5867 Dwarf_Error de;
5868 const char *op_str;
5869 char unk_op[32];
5870 int i;
5871
5872 if (dwarf_expand_frame_instructions(cie, insts, len, &oplist,
5873 &opcnt, &de) != DW_DLV_OK) {
5874 warnx("dwarf_expand_frame_instructions failed: %s",
5875 dwarf_errmsg(de));
5876 return;
5877 }
5878
5879 for (i = 0; i < opcnt; i++) {
5880 if (oplist[i].fp_base_op != 0)
5881 op = oplist[i].fp_base_op << 6;
5882 else
5883 op = oplist[i].fp_extended_op;
5884 if (dwarf_get_CFA_name(op, &op_str) != DW_DLV_OK) {
5885 snprintf(unk_op, sizeof(unk_op), "[Unknown CFA: %#x]",
5886 op);
5887 op_str = unk_op;
5888 }
5889 printf(" %s", op_str);
5890 switch (op) {
5891 case DW_CFA_advance_loc:
5892 delta = oplist[i].fp_offset * caf;
5893 pc += delta;
5894 printf(": %ju to %08jx", (uintmax_t) delta,
5895 (uintmax_t) pc);
5896 break;
5897 case DW_CFA_offset:
5898 case DW_CFA_offset_extended:
5899 case DW_CFA_offset_extended_sf:
5900 delta = oplist[i].fp_offset * daf;
5901 printf(": r%u (%s) at cfa%+jd", oplist[i].fp_register,
5902 dwarf_regname(re, oplist[i].fp_register),
5903 (intmax_t) delta);
5904 break;
5905 case DW_CFA_restore:
5906 printf(": r%u (%s)", oplist[i].fp_register,
5907 dwarf_regname(re, oplist[i].fp_register));
5908 break;
5909 case DW_CFA_set_loc:
5910 pc = oplist[i].fp_offset;
5911 printf(": to %08jx", (uintmax_t) pc);
5912 break;
5913 case DW_CFA_advance_loc1:
5914 case DW_CFA_advance_loc2:
5915 case DW_CFA_advance_loc4:
5916 pc += oplist[i].fp_offset;
5917 printf(": %jd to %08jx", (intmax_t) oplist[i].fp_offset,
5918 (uintmax_t) pc);
5919 break;
5920 case DW_CFA_def_cfa:
5921 printf(": r%u (%s) ofs %ju", oplist[i].fp_register,
5922 dwarf_regname(re, oplist[i].fp_register),
5923 (uintmax_t) oplist[i].fp_offset);
5924 break;
5925 case DW_CFA_def_cfa_sf:
5926 printf(": r%u (%s) ofs %jd", oplist[i].fp_register,
5927 dwarf_regname(re, oplist[i].fp_register),
5928 (intmax_t) (oplist[i].fp_offset * daf));
5929 break;
5930 case DW_CFA_def_cfa_register:
5931 printf(": r%u (%s)", oplist[i].fp_register,
5932 dwarf_regname(re, oplist[i].fp_register));
5933 break;
5934 case DW_CFA_def_cfa_offset:
5935 printf(": %ju", (uintmax_t) oplist[i].fp_offset);
5936 break;
5937 case DW_CFA_def_cfa_offset_sf:
5938 printf(": %jd", (intmax_t) (oplist[i].fp_offset * daf));
5939 break;
5940 default:
5941 break;
5942 }
5943 putchar('\n');
5944 }
5945
5946 dwarf_dealloc(dbg, oplist, DW_DLA_FRAME_BLOCK);
5947 }
5948
5949 static char *
get_regoff_str(struct readelf * re,Dwarf_Half reg,Dwarf_Addr off)5950 get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off)
5951 {
5952 static char rs[16];
5953
5954 if (reg == DW_FRAME_UNDEFINED_VAL || reg == DW_FRAME_REG_INITIAL_VALUE)
5955 snprintf(rs, sizeof(rs), "%c", 'u');
5956 else if (reg == DW_FRAME_CFA_COL)
5957 snprintf(rs, sizeof(rs), "c%+jd", (intmax_t) off);
5958 else
5959 snprintf(rs, sizeof(rs), "%s%+jd", dwarf_regname(re, reg),
5960 (intmax_t) off);
5961
5962 return (rs);
5963 }
5964
5965 static int
dump_dwarf_frame_regtable(struct readelf * re,Dwarf_Fde fde,Dwarf_Addr pc,Dwarf_Unsigned func_len,Dwarf_Half cie_ra)5966 dump_dwarf_frame_regtable(struct readelf *re, Dwarf_Fde fde, Dwarf_Addr pc,
5967 Dwarf_Unsigned func_len, Dwarf_Half cie_ra)
5968 {
5969 Dwarf_Regtable rt;
5970 Dwarf_Addr row_pc, end_pc, pre_pc, cur_pc;
5971 Dwarf_Error de;
5972 char *vec;
5973 int i;
5974
5975 #define BIT_SET(v, n) (v[(n)>>3] |= 1U << ((n) & 7))
5976 #define BIT_CLR(v, n) (v[(n)>>3] &= ~(1U << ((n) & 7)))
5977 #define BIT_ISSET(v, n) (v[(n)>>3] & (1U << ((n) & 7)))
5978 #define RT(x) rt.rules[(x)]
5979
5980 vec = calloc((DW_REG_TABLE_SIZE + 7) / 8, 1);
5981 if (vec == NULL)
5982 err(EXIT_FAILURE, "calloc failed");
5983
5984 pre_pc = ~((Dwarf_Addr) 0);
5985 cur_pc = pc;
5986 end_pc = pc + func_len;
5987 for (; cur_pc < end_pc; cur_pc++) {
5988 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc,
5989 &de) != DW_DLV_OK) {
5990 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n",
5991 dwarf_errmsg(de));
5992 return (-1);
5993 }
5994 if (row_pc == pre_pc)
5995 continue;
5996 pre_pc = row_pc;
5997 for (i = 1; i < DW_REG_TABLE_SIZE; i++) {
5998 if (rt.rules[i].dw_regnum != DW_FRAME_REG_INITIAL_VALUE)
5999 BIT_SET(vec, i);
6000 }
6001 }
6002
6003 printf(" LOC CFA ");
6004 for (i = 1; i < DW_REG_TABLE_SIZE; i++) {
6005 if (BIT_ISSET(vec, i)) {
6006 if ((Dwarf_Half) i == cie_ra)
6007 printf("ra ");
6008 else
6009 printf("%-5s",
6010 dwarf_regname(re, (unsigned int) i));
6011 }
6012 }
6013 putchar('\n');
6014
6015 pre_pc = ~((Dwarf_Addr) 0);
6016 cur_pc = pc;
6017 end_pc = pc + func_len;
6018 for (; cur_pc < end_pc; cur_pc++) {
6019 if (dwarf_get_fde_info_for_all_regs(fde, cur_pc, &rt, &row_pc,
6020 &de) != DW_DLV_OK) {
6021 warnx("dwarf_get_fde_info_for_all_regs failed: %s\n",
6022 dwarf_errmsg(de));
6023 return (-1);
6024 }
6025 if (row_pc == pre_pc)
6026 continue;
6027 pre_pc = row_pc;
6028 printf("%08jx ", (uintmax_t) row_pc);
6029 printf("%-8s ", get_regoff_str(re, RT(0).dw_regnum,
6030 RT(0).dw_offset));
6031 for (i = 1; i < DW_REG_TABLE_SIZE; i++) {
6032 if (BIT_ISSET(vec, i)) {
6033 printf("%-5s", get_regoff_str(re,
6034 RT(i).dw_regnum, RT(i).dw_offset));
6035 }
6036 }
6037 putchar('\n');
6038 }
6039
6040 free(vec);
6041
6042 return (0);
6043
6044 #undef BIT_SET
6045 #undef BIT_CLR
6046 #undef BIT_ISSET
6047 #undef RT
6048 }
6049
6050 static void
dump_dwarf_frame_section(struct readelf * re,struct section * s,int alt)6051 dump_dwarf_frame_section(struct readelf *re, struct section *s, int alt)
6052 {
6053 Dwarf_Cie *cie_list, cie, pre_cie;
6054 Dwarf_Fde *fde_list, fde;
6055 Dwarf_Off cie_offset, fde_offset;
6056 Dwarf_Unsigned cie_length, fde_instlen;
6057 Dwarf_Unsigned cie_caf, cie_daf, cie_instlen, func_len, fde_length;
6058 Dwarf_Signed cie_count, fde_count, cie_index;
6059 Dwarf_Addr low_pc;
6060 Dwarf_Half cie_ra;
6061 Dwarf_Small cie_version;
6062 Dwarf_Ptr fde_addr, fde_inst, cie_inst;
6063 char *cie_aug, c;
6064 int i, eh_frame;
6065 Dwarf_Error de;
6066
6067 printf("\nThe section %s contains:\n\n", s->name);
6068
6069 if (!strcmp(s->name, ".debug_frame")) {
6070 eh_frame = 0;
6071 if (dwarf_get_fde_list(re->dbg, &cie_list, &cie_count,
6072 &fde_list, &fde_count, &de) != DW_DLV_OK) {
6073 warnx("dwarf_get_fde_list failed: %s",
6074 dwarf_errmsg(de));
6075 return;
6076 }
6077 } else if (!strcmp(s->name, ".eh_frame")) {
6078 eh_frame = 1;
6079 if (dwarf_get_fde_list_eh(re->dbg, &cie_list, &cie_count,
6080 &fde_list, &fde_count, &de) != DW_DLV_OK) {
6081 warnx("dwarf_get_fde_list_eh failed: %s",
6082 dwarf_errmsg(de));
6083 return;
6084 }
6085 } else
6086 return;
6087
6088 pre_cie = NULL;
6089 for (i = 0; i < fde_count; i++) {
6090 if (dwarf_get_fde_n(fde_list, i, &fde, &de) != DW_DLV_OK) {
6091 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de));
6092 continue;
6093 }
6094 if (dwarf_get_cie_of_fde(fde, &cie, &de) != DW_DLV_OK) {
6095 warnx("dwarf_get_fde_n failed: %s", dwarf_errmsg(de));
6096 continue;
6097 }
6098 if (dwarf_get_fde_range(fde, &low_pc, &func_len, &fde_addr,
6099 &fde_length, &cie_offset, &cie_index, &fde_offset,
6100 &de) != DW_DLV_OK) {
6101 warnx("dwarf_get_fde_range failed: %s",
6102 dwarf_errmsg(de));
6103 continue;
6104 }
6105 if (dwarf_get_fde_instr_bytes(fde, &fde_inst, &fde_instlen,
6106 &de) != DW_DLV_OK) {
6107 warnx("dwarf_get_fde_instr_bytes failed: %s",
6108 dwarf_errmsg(de));
6109 continue;
6110 }
6111 if (pre_cie == NULL || cie != pre_cie) {
6112 pre_cie = cie;
6113 if (dwarf_get_cie_info(cie, &cie_length, &cie_version,
6114 &cie_aug, &cie_caf, &cie_daf, &cie_ra,
6115 &cie_inst, &cie_instlen, &de) != DW_DLV_OK) {
6116 warnx("dwarf_get_cie_info failed: %s",
6117 dwarf_errmsg(de));
6118 continue;
6119 }
6120 printf("%08jx %08jx %8.8jx CIE",
6121 (uintmax_t) cie_offset,
6122 (uintmax_t) cie_length,
6123 (uintmax_t) (eh_frame ? 0 : ~0U));
6124 if (!alt) {
6125 putchar('\n');
6126 printf(" Version:\t\t\t%u\n", cie_version);
6127 printf(" Augmentation:\t\t\t\"");
6128 while ((c = *cie_aug++) != '\0')
6129 putchar(c);
6130 printf("\"\n");
6131 printf(" Code alignment factor:\t%ju\n",
6132 (uintmax_t) cie_caf);
6133 printf(" Data alignment factor:\t%jd\n",
6134 (intmax_t) cie_daf);
6135 printf(" Return address column:\t%ju\n",
6136 (uintmax_t) cie_ra);
6137 putchar('\n');
6138 dump_dwarf_frame_inst(re, cie, cie_inst,
6139 cie_instlen, cie_caf, cie_daf, 0,
6140 re->dbg);
6141 putchar('\n');
6142 } else {
6143 printf(" \"");
6144 while ((c = *cie_aug++) != '\0')
6145 putchar(c);
6146 putchar('"');
6147 printf(" cf=%ju df=%jd ra=%ju\n",
6148 (uintmax_t) cie_caf,
6149 (uintmax_t) cie_daf,
6150 (uintmax_t) cie_ra);
6151 dump_dwarf_frame_regtable(re, fde, low_pc, 1,
6152 cie_ra);
6153 putchar('\n');
6154 }
6155 }
6156 printf("%08jx %08jx %08jx FDE cie=%08jx pc=%08jx..%08jx\n",
6157 (uintmax_t) fde_offset, (uintmax_t) fde_length,
6158 (uintmax_t) cie_offset,
6159 (uintmax_t) (eh_frame ? fde_offset + 4 - cie_offset :
6160 cie_offset),
6161 (uintmax_t) low_pc, (uintmax_t) (low_pc + func_len));
6162 if (!alt)
6163 dump_dwarf_frame_inst(re, cie, fde_inst, fde_instlen,
6164 cie_caf, cie_daf, low_pc, re->dbg);
6165 else
6166 dump_dwarf_frame_regtable(re, fde, low_pc, func_len,
6167 cie_ra);
6168 putchar('\n');
6169 }
6170 }
6171
6172 static void
dump_dwarf_frame(struct readelf * re,int alt)6173 dump_dwarf_frame(struct readelf *re, int alt)
6174 {
6175 struct section *s;
6176 int i;
6177
6178 (void) dwarf_set_frame_cfa_value(re->dbg, DW_FRAME_CFA_COL);
6179
6180 for (i = 0; (size_t) i < re->shnum; i++) {
6181 s = &re->sl[i];
6182 if (s->name != NULL && (!strcmp(s->name, ".debug_frame") ||
6183 !strcmp(s->name, ".eh_frame")))
6184 dump_dwarf_frame_section(re, s, alt);
6185 }
6186 }
6187
6188 static void
dump_dwarf_str(struct readelf * re)6189 dump_dwarf_str(struct readelf *re)
6190 {
6191 struct section *s;
6192 Elf_Data *d;
6193 unsigned char *p;
6194 int elferr, end, i, j;
6195
6196 printf("\nContents of section .debug_str:\n");
6197
6198 s = NULL;
6199 for (i = 0; (size_t) i < re->shnum; i++) {
6200 s = &re->sl[i];
6201 if (s->name != NULL && !strcmp(s->name, ".debug_str"))
6202 break;
6203 }
6204 if ((size_t) i >= re->shnum)
6205 return;
6206
6207 (void) elf_errno();
6208 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
6209 elferr = elf_errno();
6210 if (elferr != 0)
6211 warnx("elf_getdata failed: %s", elf_errmsg(-1));
6212 return;
6213 }
6214 if (d->d_size <= 0)
6215 return;
6216
6217 for (i = 0, p = d->d_buf; (size_t) i < d->d_size; i += 16) {
6218 printf(" 0x%08x", (unsigned int) i);
6219 if ((size_t) i + 16 > d->d_size)
6220 end = d->d_size;
6221 else
6222 end = i + 16;
6223 for (j = i; j < i + 16; j++) {
6224 if ((j - i) % 4 == 0)
6225 putchar(' ');
6226 if (j >= end) {
6227 printf(" ");
6228 continue;
6229 }
6230 printf("%02x", (uint8_t) p[j]);
6231 }
6232 putchar(' ');
6233 for (j = i; j < end; j++) {
6234 if (isprint(p[j]))
6235 putchar(p[j]);
6236 else if (p[j] == 0)
6237 putchar('.');
6238 else
6239 putchar(' ');
6240 }
6241 putchar('\n');
6242 }
6243 }
6244
6245 struct loc_at {
6246 Dwarf_Attribute la_at;
6247 Dwarf_Unsigned la_off;
6248 Dwarf_Unsigned la_lowpc;
6249 Dwarf_Half la_cu_psize;
6250 Dwarf_Half la_cu_osize;
6251 Dwarf_Half la_cu_ver;
6252 TAILQ_ENTRY(loc_at) la_next;
6253 };
6254
6255 static TAILQ_HEAD(, loc_at) lalist = TAILQ_HEAD_INITIALIZER(lalist);
6256
6257 static void
search_loclist_at(struct readelf * re,Dwarf_Die die,Dwarf_Unsigned lowpc)6258 search_loclist_at(struct readelf *re, Dwarf_Die die, Dwarf_Unsigned lowpc)
6259 {
6260 Dwarf_Attribute *attr_list;
6261 Dwarf_Die ret_die;
6262 Dwarf_Unsigned off;
6263 Dwarf_Off ref;
6264 Dwarf_Signed attr_count;
6265 Dwarf_Half attr, form;
6266 Dwarf_Bool is_info;
6267 Dwarf_Error de;
6268 struct loc_at *la, *nla;
6269 int i, ret;
6270
6271 is_info = dwarf_get_die_infotypes_flag(die);
6272
6273 if ((ret = dwarf_attrlist(die, &attr_list, &attr_count, &de)) !=
6274 DW_DLV_OK) {
6275 if (ret == DW_DLV_ERROR)
6276 warnx("dwarf_attrlist failed: %s", dwarf_errmsg(de));
6277 goto cont_search;
6278 }
6279 for (i = 0; i < attr_count; i++) {
6280 if (dwarf_whatattr(attr_list[i], &attr, &de) != DW_DLV_OK) {
6281 warnx("dwarf_whatattr failed: %s", dwarf_errmsg(de));
6282 continue;
6283 }
6284 if (attr != DW_AT_location &&
6285 attr != DW_AT_string_length &&
6286 attr != DW_AT_return_addr &&
6287 attr != DW_AT_data_member_location &&
6288 attr != DW_AT_frame_base &&
6289 attr != DW_AT_segment &&
6290 attr != DW_AT_static_link &&
6291 attr != DW_AT_use_location &&
6292 attr != DW_AT_vtable_elem_location)
6293 continue;
6294 if (dwarf_whatform(attr_list[i], &form, &de) != DW_DLV_OK) {
6295 warnx("dwarf_whatform failed: %s", dwarf_errmsg(de));
6296 continue;
6297 }
6298 if (form == DW_FORM_data4 || form == DW_FORM_data8) {
6299 if (dwarf_formudata(attr_list[i], &off, &de) !=
6300 DW_DLV_OK) {
6301 warnx("dwarf_formudata failed: %s",
6302 dwarf_errmsg(de));
6303 continue;
6304 }
6305 } else if (form == DW_FORM_sec_offset) {
6306 if (dwarf_global_formref(attr_list[i], &ref, &de) !=
6307 DW_DLV_OK) {
6308 warnx("dwarf_global_formref failed: %s",
6309 dwarf_errmsg(de));
6310 continue;
6311 }
6312 off = ref;
6313 } else
6314 continue;
6315
6316 TAILQ_FOREACH(la, &lalist, la_next) {
6317 if (off == la->la_off)
6318 break;
6319 if (off < la->la_off) {
6320 if ((nla = malloc(sizeof(*nla))) == NULL)
6321 err(EXIT_FAILURE, "malloc failed");
6322 nla->la_at = attr_list[i];
6323 nla->la_off = off;
6324 nla->la_lowpc = lowpc;
6325 nla->la_cu_psize = re->cu_psize;
6326 nla->la_cu_osize = re->cu_osize;
6327 nla->la_cu_ver = re->cu_ver;
6328 TAILQ_INSERT_BEFORE(la, nla, la_next);
6329 break;
6330 }
6331 }
6332 if (la == NULL) {
6333 if ((nla = malloc(sizeof(*nla))) == NULL)
6334 err(EXIT_FAILURE, "malloc failed");
6335 nla->la_at = attr_list[i];
6336 nla->la_off = off;
6337 nla->la_lowpc = lowpc;
6338 nla->la_cu_psize = re->cu_psize;
6339 nla->la_cu_osize = re->cu_osize;
6340 nla->la_cu_ver = re->cu_ver;
6341 TAILQ_INSERT_TAIL(&lalist, nla, la_next);
6342 }
6343 }
6344
6345 cont_search:
6346 /* Search children. */
6347 ret = dwarf_child(die, &ret_die, &de);
6348 if (ret == DW_DLV_ERROR)
6349 warnx("dwarf_child: %s", dwarf_errmsg(de));
6350 else if (ret == DW_DLV_OK)
6351 search_loclist_at(re, ret_die, lowpc);
6352
6353 /* Search sibling. */
6354 ret = dwarf_siblingof_b(re->dbg, die, &ret_die, is_info, &de);
6355 if (ret == DW_DLV_ERROR)
6356 warnx("dwarf_siblingof: %s", dwarf_errmsg(de));
6357 else if (ret == DW_DLV_OK)
6358 search_loclist_at(re, ret_die, lowpc);
6359 }
6360
6361 static void
dump_dwarf_loc(struct readelf * re,Dwarf_Loc * lr)6362 dump_dwarf_loc(struct readelf *re, Dwarf_Loc *lr)
6363 {
6364 const char *op_str;
6365 char unk_op[32];
6366 uint8_t *b, n;
6367 int i;
6368
6369 if (dwarf_get_OP_name(lr->lr_atom, &op_str) !=
6370 DW_DLV_OK) {
6371 snprintf(unk_op, sizeof(unk_op),
6372 "[Unknown OP: %#x]", lr->lr_atom);
6373 op_str = unk_op;
6374 }
6375
6376 printf("%s", op_str);
6377
6378 switch (lr->lr_atom) {
6379 case DW_OP_reg0:
6380 case DW_OP_reg1:
6381 case DW_OP_reg2:
6382 case DW_OP_reg3:
6383 case DW_OP_reg4:
6384 case DW_OP_reg5:
6385 case DW_OP_reg6:
6386 case DW_OP_reg7:
6387 case DW_OP_reg8:
6388 case DW_OP_reg9:
6389 case DW_OP_reg10:
6390 case DW_OP_reg11:
6391 case DW_OP_reg12:
6392 case DW_OP_reg13:
6393 case DW_OP_reg14:
6394 case DW_OP_reg15:
6395 case DW_OP_reg16:
6396 case DW_OP_reg17:
6397 case DW_OP_reg18:
6398 case DW_OP_reg19:
6399 case DW_OP_reg20:
6400 case DW_OP_reg21:
6401 case DW_OP_reg22:
6402 case DW_OP_reg23:
6403 case DW_OP_reg24:
6404 case DW_OP_reg25:
6405 case DW_OP_reg26:
6406 case DW_OP_reg27:
6407 case DW_OP_reg28:
6408 case DW_OP_reg29:
6409 case DW_OP_reg30:
6410 case DW_OP_reg31:
6411 printf(" (%s)", dwarf_regname(re, lr->lr_atom - DW_OP_reg0));
6412 break;
6413
6414 case DW_OP_deref:
6415 case DW_OP_lit0:
6416 case DW_OP_lit1:
6417 case DW_OP_lit2:
6418 case DW_OP_lit3:
6419 case DW_OP_lit4:
6420 case DW_OP_lit5:
6421 case DW_OP_lit6:
6422 case DW_OP_lit7:
6423 case DW_OP_lit8:
6424 case DW_OP_lit9:
6425 case DW_OP_lit10:
6426 case DW_OP_lit11:
6427 case DW_OP_lit12:
6428 case DW_OP_lit13:
6429 case DW_OP_lit14:
6430 case DW_OP_lit15:
6431 case DW_OP_lit16:
6432 case DW_OP_lit17:
6433 case DW_OP_lit18:
6434 case DW_OP_lit19:
6435 case DW_OP_lit20:
6436 case DW_OP_lit21:
6437 case DW_OP_lit22:
6438 case DW_OP_lit23:
6439 case DW_OP_lit24:
6440 case DW_OP_lit25:
6441 case DW_OP_lit26:
6442 case DW_OP_lit27:
6443 case DW_OP_lit28:
6444 case DW_OP_lit29:
6445 case DW_OP_lit30:
6446 case DW_OP_lit31:
6447 case DW_OP_dup:
6448 case DW_OP_drop:
6449 case DW_OP_over:
6450 case DW_OP_swap:
6451 case DW_OP_rot:
6452 case DW_OP_xderef:
6453 case DW_OP_abs:
6454 case DW_OP_and:
6455 case DW_OP_div:
6456 case DW_OP_minus:
6457 case DW_OP_mod:
6458 case DW_OP_mul:
6459 case DW_OP_neg:
6460 case DW_OP_not:
6461 case DW_OP_or:
6462 case DW_OP_plus:
6463 case DW_OP_shl:
6464 case DW_OP_shr:
6465 case DW_OP_shra:
6466 case DW_OP_xor:
6467 case DW_OP_eq:
6468 case DW_OP_ge:
6469 case DW_OP_gt:
6470 case DW_OP_le:
6471 case DW_OP_lt:
6472 case DW_OP_ne:
6473 case DW_OP_nop:
6474 case DW_OP_push_object_address:
6475 case DW_OP_form_tls_address:
6476 case DW_OP_call_frame_cfa:
6477 case DW_OP_stack_value:
6478 case DW_OP_GNU_push_tls_address:
6479 case DW_OP_GNU_uninit:
6480 break;
6481
6482 case DW_OP_const1u:
6483 case DW_OP_pick:
6484 case DW_OP_deref_size:
6485 case DW_OP_xderef_size:
6486 case DW_OP_const2u:
6487 case DW_OP_bra:
6488 case DW_OP_skip:
6489 case DW_OP_const4u:
6490 case DW_OP_const8u:
6491 case DW_OP_constu:
6492 case DW_OP_plus_uconst:
6493 case DW_OP_regx:
6494 case DW_OP_piece:
6495 printf(": %ju", (uintmax_t)
6496 lr->lr_number);
6497 break;
6498
6499 case DW_OP_const1s:
6500 case DW_OP_const2s:
6501 case DW_OP_const4s:
6502 case DW_OP_const8s:
6503 case DW_OP_consts:
6504 printf(": %jd", (intmax_t)
6505 lr->lr_number);
6506 break;
6507
6508 case DW_OP_breg0:
6509 case DW_OP_breg1:
6510 case DW_OP_breg2:
6511 case DW_OP_breg3:
6512 case DW_OP_breg4:
6513 case DW_OP_breg5:
6514 case DW_OP_breg6:
6515 case DW_OP_breg7:
6516 case DW_OP_breg8:
6517 case DW_OP_breg9:
6518 case DW_OP_breg10:
6519 case DW_OP_breg11:
6520 case DW_OP_breg12:
6521 case DW_OP_breg13:
6522 case DW_OP_breg14:
6523 case DW_OP_breg15:
6524 case DW_OP_breg16:
6525 case DW_OP_breg17:
6526 case DW_OP_breg18:
6527 case DW_OP_breg19:
6528 case DW_OP_breg20:
6529 case DW_OP_breg21:
6530 case DW_OP_breg22:
6531 case DW_OP_breg23:
6532 case DW_OP_breg24:
6533 case DW_OP_breg25:
6534 case DW_OP_breg26:
6535 case DW_OP_breg27:
6536 case DW_OP_breg28:
6537 case DW_OP_breg29:
6538 case DW_OP_breg30:
6539 case DW_OP_breg31:
6540 printf(" (%s): %jd",
6541 dwarf_regname(re, lr->lr_atom - DW_OP_breg0),
6542 (intmax_t) lr->lr_number);
6543 break;
6544
6545 case DW_OP_fbreg:
6546 printf(": %jd", (intmax_t)
6547 lr->lr_number);
6548 break;
6549
6550 case DW_OP_bregx:
6551 printf(": %ju (%s) %jd",
6552 (uintmax_t) lr->lr_number,
6553 dwarf_regname(re, (unsigned int) lr->lr_number),
6554 (intmax_t) lr->lr_number2);
6555 break;
6556
6557 case DW_OP_addr:
6558 case DW_OP_GNU_encoded_addr:
6559 printf(": %#jx", (uintmax_t)
6560 lr->lr_number);
6561 break;
6562
6563 case DW_OP_GNU_implicit_pointer:
6564 printf(": <0x%jx> %jd", (uintmax_t) lr->lr_number,
6565 (intmax_t) lr->lr_number2);
6566 break;
6567
6568 case DW_OP_implicit_value:
6569 printf(": %ju byte block:", (uintmax_t) lr->lr_number);
6570 b = (uint8_t *)(uintptr_t) lr->lr_number2;
6571 for (i = 0; (Dwarf_Unsigned) i < lr->lr_number; i++)
6572 printf(" %x", b[i]);
6573 break;
6574
6575 case DW_OP_GNU_entry_value:
6576 printf(": (");
6577 dump_dwarf_block(re, (uint8_t *)(uintptr_t) lr->lr_number2,
6578 lr->lr_number);
6579 putchar(')');
6580 break;
6581
6582 case DW_OP_GNU_const_type:
6583 printf(": <0x%jx> ", (uintmax_t) lr->lr_number);
6584 b = (uint8_t *)(uintptr_t) lr->lr_number2;
6585 n = *b;
6586 for (i = 1; (uint8_t) i < n; i++)
6587 printf(" %x", b[i]);
6588 break;
6589
6590 case DW_OP_GNU_regval_type:
6591 printf(": %ju (%s) <0x%jx>", (uintmax_t) lr->lr_number,
6592 dwarf_regname(re, (unsigned int) lr->lr_number),
6593 (uintmax_t) lr->lr_number2);
6594 break;
6595
6596 case DW_OP_GNU_convert:
6597 case DW_OP_GNU_deref_type:
6598 case DW_OP_GNU_parameter_ref:
6599 case DW_OP_GNU_reinterpret:
6600 printf(": <0x%jx>", (uintmax_t) lr->lr_number);
6601 break;
6602
6603 default:
6604 break;
6605 }
6606 }
6607
6608 static void
dump_dwarf_block(struct readelf * re,uint8_t * b,Dwarf_Unsigned len)6609 dump_dwarf_block(struct readelf *re, uint8_t *b, Dwarf_Unsigned len)
6610 {
6611 Dwarf_Locdesc *llbuf;
6612 Dwarf_Signed lcnt;
6613 Dwarf_Error de;
6614 int i;
6615
6616 if (dwarf_loclist_from_expr_b(re->dbg, b, len, re->cu_psize,
6617 re->cu_osize, re->cu_ver, &llbuf, &lcnt, &de) != DW_DLV_OK) {
6618 warnx("dwarf_loclist_form_expr_b: %s", dwarf_errmsg(de));
6619 return;
6620 }
6621
6622 for (i = 0; (Dwarf_Half) i < llbuf->ld_cents; i++) {
6623 dump_dwarf_loc(re, &llbuf->ld_s[i]);
6624 if (i < llbuf->ld_cents - 1)
6625 printf("; ");
6626 }
6627
6628 dwarf_dealloc(re->dbg, llbuf->ld_s, DW_DLA_LOC_BLOCK);
6629 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LOCDESC);
6630 }
6631
6632 static void
dump_dwarf_loclist(struct readelf * re)6633 dump_dwarf_loclist(struct readelf *re)
6634 {
6635 Dwarf_Die die;
6636 Dwarf_Locdesc **llbuf;
6637 Dwarf_Unsigned lowpc;
6638 Dwarf_Signed lcnt;
6639 Dwarf_Half tag, version, pointer_size, off_size;
6640 Dwarf_Error de;
6641 struct loc_at *la;
6642 int i, j, ret;
6643
6644 printf("\nContents of section .debug_loc:\n");
6645
6646 /* Search .debug_info section. */
6647 while ((ret = dwarf_next_cu_header_b(re->dbg, NULL, &version, NULL,
6648 &pointer_size, &off_size, NULL, NULL, &de)) == DW_DLV_OK) {
6649 set_cu_context(re, pointer_size, off_size, version);
6650 die = NULL;
6651 if (dwarf_siblingof(re->dbg, die, &die, &de) != DW_DLV_OK)
6652 continue;
6653 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
6654 warnx("dwarf_tag failed: %s", dwarf_errmsg(de));
6655 continue;
6656 }
6657 /* XXX: What about DW_TAG_partial_unit? */
6658 lowpc = 0;
6659 if (tag == DW_TAG_compile_unit) {
6660 if (dwarf_attrval_unsigned(die, DW_AT_low_pc,
6661 &lowpc, &de) != DW_DLV_OK)
6662 lowpc = 0;
6663 }
6664
6665 /* Search attributes for reference to .debug_loc section. */
6666 search_loclist_at(re, die, lowpc);
6667 }
6668 if (ret == DW_DLV_ERROR)
6669 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
6670
6671 /* Search .debug_types section. */
6672 do {
6673 while ((ret = dwarf_next_cu_header_c(re->dbg, 0, NULL,
6674 &version, NULL, &pointer_size, &off_size, NULL, NULL,
6675 NULL, NULL, &de)) == DW_DLV_OK) {
6676 set_cu_context(re, pointer_size, off_size, version);
6677 die = NULL;
6678 if (dwarf_siblingof(re->dbg, die, &die, &de) !=
6679 DW_DLV_OK)
6680 continue;
6681 if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
6682 warnx("dwarf_tag failed: %s",
6683 dwarf_errmsg(de));
6684 continue;
6685 }
6686
6687 lowpc = 0;
6688 if (tag == DW_TAG_type_unit) {
6689 if (dwarf_attrval_unsigned(die, DW_AT_low_pc,
6690 &lowpc, &de) != DW_DLV_OK)
6691 lowpc = 0;
6692 }
6693
6694 /*
6695 * Search attributes for reference to .debug_loc
6696 * section.
6697 */
6698 search_loclist_at(re, die, lowpc);
6699 }
6700 if (ret == DW_DLV_ERROR)
6701 warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
6702 } while (dwarf_next_types_section(re->dbg, &de) == DW_DLV_OK);
6703
6704 if (TAILQ_EMPTY(&lalist))
6705 return;
6706
6707 printf(" Offset Begin End Expression\n");
6708
6709 TAILQ_FOREACH(la, &lalist, la_next) {
6710 if (dwarf_loclist_n(la->la_at, &llbuf, &lcnt, &de) !=
6711 DW_DLV_OK) {
6712 warnx("dwarf_loclist_n failed: %s", dwarf_errmsg(de));
6713 continue;
6714 }
6715 set_cu_context(re, la->la_cu_psize, la->la_cu_osize,
6716 la->la_cu_ver);
6717 for (i = 0; i < lcnt; i++) {
6718 printf(" %8.8jx ", la->la_off);
6719 if (llbuf[i]->ld_lopc == 0 && llbuf[i]->ld_hipc == 0) {
6720 printf("<End of list>\n");
6721 continue;
6722 }
6723
6724 /* TODO: handle base selection entry. */
6725
6726 printf("%8.8jx %8.8jx ",
6727 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_lopc),
6728 (uintmax_t) (la->la_lowpc + llbuf[i]->ld_hipc));
6729
6730 putchar('(');
6731 for (j = 0; (Dwarf_Half) j < llbuf[i]->ld_cents; j++) {
6732 dump_dwarf_loc(re, &llbuf[i]->ld_s[j]);
6733 if (j < llbuf[i]->ld_cents - 1)
6734 printf("; ");
6735 }
6736 putchar(')');
6737
6738 if (llbuf[i]->ld_lopc == llbuf[i]->ld_hipc)
6739 printf(" (start == end)");
6740 putchar('\n');
6741 }
6742 for (i = 0; i < lcnt; i++) {
6743 dwarf_dealloc(re->dbg, llbuf[i]->ld_s,
6744 DW_DLA_LOC_BLOCK);
6745 dwarf_dealloc(re->dbg, llbuf[i], DW_DLA_LOCDESC);
6746 }
6747 dwarf_dealloc(re->dbg, llbuf, DW_DLA_LIST);
6748 }
6749 }
6750
6751 /*
6752 * Retrieve a string using string table section index and the string offset.
6753 */
6754 static const char*
get_string(struct readelf * re,int strtab,size_t off)6755 get_string(struct readelf *re, int strtab, size_t off)
6756 {
6757 const char *name;
6758
6759 if ((name = elf_strptr(re->elf, strtab, off)) == NULL)
6760 return ("");
6761
6762 return (name);
6763 }
6764
6765 /*
6766 * Retrieve the name of a symbol using the section index of the symbol
6767 * table and the index of the symbol within that table.
6768 */
6769 static const char *
get_symbol_name(struct readelf * re,int symtab,int i)6770 get_symbol_name(struct readelf *re, int symtab, int i)
6771 {
6772 struct section *s;
6773 const char *name;
6774 GElf_Sym sym;
6775 Elf_Data *data;
6776 int elferr;
6777
6778 s = &re->sl[symtab];
6779 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM)
6780 return ("");
6781 (void) elf_errno();
6782 if ((data = elf_getdata(s->scn, NULL)) == NULL) {
6783 elferr = elf_errno();
6784 if (elferr != 0)
6785 warnx("elf_getdata failed: %s", elf_errmsg(elferr));
6786 return ("");
6787 }
6788 if (gelf_getsym(data, i, &sym) != &sym)
6789 return ("");
6790 /* Return section name for STT_SECTION symbol. */
6791 if (GELF_ST_TYPE(sym.st_info) == STT_SECTION &&
6792 re->sl[sym.st_shndx].name != NULL)
6793 return (re->sl[sym.st_shndx].name);
6794 if (s->link >= re->shnum ||
6795 (name = elf_strptr(re->elf, s->link, sym.st_name)) == NULL)
6796 return ("");
6797
6798 return (name);
6799 }
6800
6801 static uint64_t
get_symbol_value(struct readelf * re,int symtab,int i)6802 get_symbol_value(struct readelf *re, int symtab, int i)
6803 {
6804 struct section *s;
6805 GElf_Sym sym;
6806 Elf_Data *data;
6807 int elferr;
6808
6809 s = &re->sl[symtab];
6810 if (s->type != SHT_SYMTAB && s->type != SHT_DYNSYM)
6811 return (0);
6812 (void) elf_errno();
6813 if ((data = elf_getdata(s->scn, NULL)) == NULL) {
6814 elferr = elf_errno();
6815 if (elferr != 0)
6816 warnx("elf_getdata failed: %s", elf_errmsg(elferr));
6817 return (0);
6818 }
6819 if (gelf_getsym(data, i, &sym) != &sym)
6820 return (0);
6821
6822 return (sym.st_value);
6823 }
6824
6825 static void
hex_dump(struct readelf * re)6826 hex_dump(struct readelf *re)
6827 {
6828 struct section *s;
6829 Elf_Data *d;
6830 uint8_t *buf;
6831 size_t sz, nbytes;
6832 uint64_t addr;
6833 int elferr, i, j;
6834
6835 for (i = 1; (size_t) i < re->shnum; i++) {
6836 s = &re->sl[i];
6837 if (find_dumpop(re, (size_t) i, s->name, HEX_DUMP, -1) == NULL)
6838 continue;
6839 (void) elf_errno();
6840 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
6841 elferr = elf_errno();
6842 if (elferr != 0)
6843 warnx("elf_getdata failed: %s",
6844 elf_errmsg(elferr));
6845 continue;
6846 }
6847 if (d->d_size <= 0 || d->d_buf == NULL) {
6848 printf("\nSection '%s' has no data to dump.\n",
6849 s->name);
6850 continue;
6851 }
6852 buf = d->d_buf;
6853 sz = d->d_size;
6854 addr = s->addr;
6855 printf("\nHex dump of section '%s':\n", s->name);
6856 while (sz > 0) {
6857 printf(" 0x%8.8jx ", (uintmax_t)addr);
6858 nbytes = sz > 16? 16 : sz;
6859 for (j = 0; j < 16; j++) {
6860 if ((size_t)j < nbytes)
6861 printf("%2.2x", buf[j]);
6862 else
6863 printf(" ");
6864 if ((j & 3) == 3)
6865 printf(" ");
6866 }
6867 for (j = 0; (size_t)j < nbytes; j++) {
6868 if (isprint(buf[j]))
6869 printf("%c", buf[j]);
6870 else
6871 printf(".");
6872 }
6873 printf("\n");
6874 buf += nbytes;
6875 addr += nbytes;
6876 sz -= nbytes;
6877 }
6878 }
6879 }
6880
6881 static void
str_dump(struct readelf * re)6882 str_dump(struct readelf *re)
6883 {
6884 struct section *s;
6885 Elf_Data *d;
6886 unsigned char *start, *end, *buf_end;
6887 unsigned int len;
6888 int i, j, elferr, found;
6889
6890 for (i = 1; (size_t) i < re->shnum; i++) {
6891 s = &re->sl[i];
6892 if (find_dumpop(re, (size_t) i, s->name, STR_DUMP, -1) == NULL)
6893 continue;
6894 (void) elf_errno();
6895 if ((d = elf_getdata(s->scn, NULL)) == NULL) {
6896 elferr = elf_errno();
6897 if (elferr != 0)
6898 warnx("elf_getdata failed: %s",
6899 elf_errmsg(elferr));
6900 continue;
6901 }
6902 if (d->d_size <= 0 || d->d_buf == NULL) {
6903 printf("\nSection '%s' has no data to dump.\n",
6904 s->name);
6905 continue;
6906 }
6907 buf_end = (unsigned char *) d->d_buf + d->d_size;
6908 start = (unsigned char *) d->d_buf;
6909 found = 0;
6910 printf("\nString dump of section '%s':\n", s->name);
6911 for (;;) {
6912 while (start < buf_end && !isprint(*start))
6913 start++;
6914 if (start >= buf_end)
6915 break;
6916 end = start + 1;
6917 while (end < buf_end && isprint(*end))
6918 end++;
6919 printf(" [%6lx] ",
6920 (long) (start - (unsigned char *) d->d_buf));
6921 len = end - start;
6922 for (j = 0; (unsigned int) j < len; j++)
6923 putchar(start[j]);
6924 putchar('\n');
6925 found = 1;
6926 if (end >= buf_end)
6927 break;
6928 start = end + 1;
6929 }
6930 if (!found)
6931 printf(" No strings found in this section.");
6932 putchar('\n');
6933 }
6934 }
6935
6936 static void
load_sections(struct readelf * re)6937 load_sections(struct readelf *re)
6938 {
6939 struct section *s;
6940 const char *name;
6941 Elf_Scn *scn;
6942 GElf_Shdr sh;
6943 size_t shstrndx, ndx;
6944 int elferr;
6945
6946 /* Allocate storage for internal section list. */
6947 if (!elf_getshnum(re->elf, &re->shnum)) {
6948 warnx("elf_getshnum failed: %s", elf_errmsg(-1));
6949 return;
6950 }
6951 if (re->sl != NULL)
6952 free(re->sl);
6953 if ((re->sl = calloc(re->shnum, sizeof(*re->sl))) == NULL)
6954 err(EXIT_FAILURE, "calloc failed");
6955
6956 /* Get the index of .shstrtab section. */
6957 if (!elf_getshstrndx(re->elf, &shstrndx)) {
6958 warnx("elf_getshstrndx failed: %s", elf_errmsg(-1));
6959 return;
6960 }
6961
6962 if ((scn = elf_getscn(re->elf, 0)) == NULL)
6963 return;
6964
6965 (void) elf_errno();
6966 do {
6967 if (gelf_getshdr(scn, &sh) == NULL) {
6968 warnx("gelf_getshdr failed: %s", elf_errmsg(-1));
6969 (void) elf_errno();
6970 continue;
6971 }
6972 if ((name = elf_strptr(re->elf, shstrndx, sh.sh_name)) == NULL) {
6973 (void) elf_errno();
6974 name = "ERROR";
6975 }
6976 if ((ndx = elf_ndxscn(scn)) == SHN_UNDEF) {
6977 if ((elferr = elf_errno()) != 0)
6978 warnx("elf_ndxscn failed: %s",
6979 elf_errmsg(elferr));
6980 continue;
6981 }
6982 if (ndx >= re->shnum) {
6983 warnx("section index of '%s' out of range", name);
6984 continue;
6985 }
6986 if (sh.sh_link >= re->shnum)
6987 warnx("section link %llu of '%s' out of range",
6988 (unsigned long long)sh.sh_link, name);
6989 s = &re->sl[ndx];
6990 s->name = name;
6991 s->scn = scn;
6992 s->off = sh.sh_offset;
6993 s->sz = sh.sh_size;
6994 s->entsize = sh.sh_entsize;
6995 s->align = sh.sh_addralign;
6996 s->type = sh.sh_type;
6997 s->flags = sh.sh_flags;
6998 s->addr = sh.sh_addr;
6999 s->link = sh.sh_link;
7000 s->info = sh.sh_info;
7001 } while ((scn = elf_nextscn(re->elf, scn)) != NULL);
7002 elferr = elf_errno();
7003 if (elferr != 0)
7004 warnx("elf_nextscn failed: %s", elf_errmsg(elferr));
7005 }
7006
7007 static void
unload_sections(struct readelf * re)7008 unload_sections(struct readelf *re)
7009 {
7010
7011 if (re->sl != NULL) {
7012 free(re->sl);
7013 re->sl = NULL;
7014 }
7015 re->shnum = 0;
7016 re->vd_s = NULL;
7017 re->vn_s = NULL;
7018 re->vs_s = NULL;
7019 re->vs = NULL;
7020 re->vs_sz = 0;
7021 if (re->ver != NULL) {
7022 free(re->ver);
7023 re->ver = NULL;
7024 re->ver_sz = 0;
7025 }
7026 }
7027
7028 static void
dump_elf(struct readelf * re)7029 dump_elf(struct readelf *re)
7030 {
7031
7032 /* Fetch ELF header. No need to continue if it fails. */
7033 if (gelf_getehdr(re->elf, &re->ehdr) == NULL) {
7034 warnx("gelf_getehdr failed: %s", elf_errmsg(-1));
7035 return;
7036 }
7037 if ((re->ec = gelf_getclass(re->elf)) == ELFCLASSNONE) {
7038 warnx("gelf_getclass failed: %s", elf_errmsg(-1));
7039 return;
7040 }
7041 if (re->ehdr.e_ident[EI_DATA] == ELFDATA2MSB) {
7042 re->dw_read = _read_msb;
7043 re->dw_decode = _decode_msb;
7044 } else {
7045 re->dw_read = _read_lsb;
7046 re->dw_decode = _decode_lsb;
7047 }
7048
7049 if (re->options & ~RE_H)
7050 load_sections(re);
7051 if ((re->options & RE_VV) || (re->options & RE_S))
7052 search_ver(re);
7053 if (re->options & RE_H)
7054 dump_ehdr(re);
7055 if (re->options & RE_L)
7056 dump_phdr(re);
7057 if (re->options & RE_SS)
7058 dump_shdr(re);
7059 if (re->options & RE_G)
7060 dump_section_groups(re);
7061 if (re->options & RE_D)
7062 dump_dynamic(re);
7063 if (re->options & RE_R)
7064 dump_reloc(re);
7065 if (re->options & RE_S)
7066 dump_symtabs(re);
7067 if (re->options & RE_N)
7068 dump_notes(re);
7069 if (re->options & RE_II)
7070 dump_hash(re);
7071 if (re->options & RE_X)
7072 hex_dump(re);
7073 if (re->options & RE_P)
7074 str_dump(re);
7075 if (re->options & RE_VV)
7076 dump_ver(re);
7077 if (re->options & RE_AA)
7078 dump_arch_specific_info(re);
7079 if (re->options & RE_W)
7080 dump_dwarf(re);
7081 if (re->options & ~RE_H)
7082 unload_sections(re);
7083 }
7084
7085 static void
dump_dwarf(struct readelf * re)7086 dump_dwarf(struct readelf *re)
7087 {
7088 int error;
7089 Dwarf_Error de;
7090
7091 if (dwarf_elf_init(re->elf, DW_DLC_READ, NULL, NULL, &re->dbg, &de)) {
7092 if ((error = dwarf_errno(de)) != DW_DLE_DEBUG_INFO_NULL)
7093 errx(EXIT_FAILURE, "dwarf_elf_init failed: %s",
7094 dwarf_errmsg(de));
7095 return;
7096 }
7097
7098 if (re->dop & DW_A)
7099 dump_dwarf_abbrev(re);
7100 if (re->dop & DW_L)
7101 dump_dwarf_line(re);
7102 if (re->dop & DW_LL)
7103 dump_dwarf_line_decoded(re);
7104 if (re->dop & DW_I) {
7105 dump_dwarf_info(re, 0);
7106 dump_dwarf_info(re, 1);
7107 }
7108 if (re->dop & DW_P)
7109 dump_dwarf_pubnames(re);
7110 if (re->dop & DW_R)
7111 dump_dwarf_aranges(re);
7112 if (re->dop & DW_RR)
7113 dump_dwarf_ranges(re);
7114 if (re->dop & DW_M)
7115 dump_dwarf_macinfo(re);
7116 if (re->dop & DW_F)
7117 dump_dwarf_frame(re, 0);
7118 else if (re->dop & DW_FF)
7119 dump_dwarf_frame(re, 1);
7120 if (re->dop & DW_S)
7121 dump_dwarf_str(re);
7122 if (re->dop & DW_O)
7123 dump_dwarf_loclist(re);
7124
7125 dwarf_finish(re->dbg, &de);
7126 }
7127
7128 static void
dump_ar(struct readelf * re,int fd)7129 dump_ar(struct readelf *re, int fd)
7130 {
7131 Elf_Arsym *arsym;
7132 Elf_Arhdr *arhdr;
7133 Elf_Cmd cmd;
7134 Elf *e;
7135 size_t sz;
7136 off_t off;
7137 int i;
7138
7139 re->ar = re->elf;
7140
7141 if (re->options & RE_C) {
7142 if ((arsym = elf_getarsym(re->ar, &sz)) == NULL) {
7143 warnx("elf_getarsym() failed: %s", elf_errmsg(-1));
7144 goto process_members;
7145 }
7146 printf("Index of archive %s: (%ju entries)\n", re->filename,
7147 (uintmax_t) sz - 1);
7148 off = 0;
7149 for (i = 0; (size_t) i < sz; i++) {
7150 if (arsym[i].as_name == NULL)
7151 break;
7152 if (arsym[i].as_off != off) {
7153 off = arsym[i].as_off;
7154 if (elf_rand(re->ar, off) != off) {
7155 warnx("elf_rand() failed: %s",
7156 elf_errmsg(-1));
7157 continue;
7158 }
7159 if ((e = elf_begin(fd, ELF_C_READ, re->ar)) ==
7160 NULL) {
7161 warnx("elf_begin() failed: %s",
7162 elf_errmsg(-1));
7163 continue;
7164 }
7165 if ((arhdr = elf_getarhdr(e)) == NULL) {
7166 warnx("elf_getarhdr() failed: %s",
7167 elf_errmsg(-1));
7168 elf_end(e);
7169 continue;
7170 }
7171 printf("Binary %s(%s) contains:\n",
7172 re->filename, arhdr->ar_name);
7173 }
7174 printf("\t%s\n", arsym[i].as_name);
7175 }
7176 if (elf_rand(re->ar, SARMAG) != SARMAG) {
7177 warnx("elf_rand() failed: %s", elf_errmsg(-1));
7178 return;
7179 }
7180 }
7181
7182 process_members:
7183
7184 if ((re->options & ~RE_C) == 0)
7185 return;
7186
7187 cmd = ELF_C_READ;
7188 while ((re->elf = elf_begin(fd, cmd, re->ar)) != NULL) {
7189 if ((arhdr = elf_getarhdr(re->elf)) == NULL) {
7190 warnx("elf_getarhdr() failed: %s", elf_errmsg(-1));
7191 goto next_member;
7192 }
7193 if (strcmp(arhdr->ar_name, "/") == 0 ||
7194 strcmp(arhdr->ar_name, "//") == 0 ||
7195 strcmp(arhdr->ar_name, "__.SYMDEF") == 0)
7196 goto next_member;
7197 printf("\nFile: %s(%s)\n", re->filename, arhdr->ar_name);
7198 dump_elf(re);
7199
7200 next_member:
7201 cmd = elf_next(re->elf);
7202 elf_end(re->elf);
7203 }
7204 re->elf = re->ar;
7205 }
7206
7207 static void
dump_object(struct readelf * re)7208 dump_object(struct readelf *re)
7209 {
7210 int fd;
7211
7212 if ((fd = open(re->filename, O_RDONLY)) == -1) {
7213 warn("open %s failed", re->filename);
7214 return;
7215 }
7216
7217 if ((re->flags & DISPLAY_FILENAME) != 0)
7218 printf("\nFile: %s\n", re->filename);
7219
7220 if ((re->elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
7221 warnx("elf_begin() failed: %s", elf_errmsg(-1));
7222 return;
7223 }
7224
7225 switch (elf_kind(re->elf)) {
7226 case ELF_K_NONE:
7227 warnx("Not an ELF file.");
7228 return;
7229 case ELF_K_ELF:
7230 dump_elf(re);
7231 break;
7232 case ELF_K_AR:
7233 dump_ar(re, fd);
7234 break;
7235 default:
7236 warnx("Internal: libelf returned unknown elf kind.");
7237 return;
7238 }
7239
7240 elf_end(re->elf);
7241 }
7242
7243 static void
add_dumpop(struct readelf * re,size_t si,const char * sn,int op,int t)7244 add_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t)
7245 {
7246 struct dumpop *d;
7247
7248 if ((d = find_dumpop(re, si, sn, -1, t)) == NULL) {
7249 if ((d = calloc(1, sizeof(*d))) == NULL)
7250 err(EXIT_FAILURE, "calloc failed");
7251 if (t == DUMP_BY_INDEX)
7252 d->u.si = si;
7253 else
7254 d->u.sn = sn;
7255 d->type = t;
7256 d->op = op;
7257 STAILQ_INSERT_TAIL(&re->v_dumpop, d, dumpop_list);
7258 } else
7259 d->op |= op;
7260 }
7261
7262 static struct dumpop *
find_dumpop(struct readelf * re,size_t si,const char * sn,int op,int t)7263 find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t)
7264 {
7265 struct dumpop *d;
7266
7267 STAILQ_FOREACH(d, &re->v_dumpop, dumpop_list) {
7268 if ((op == -1 || op & d->op) &&
7269 (t == -1 || (unsigned) t == d->type)) {
7270 if ((d->type == DUMP_BY_INDEX && d->u.si == si) ||
7271 (d->type == DUMP_BY_NAME && !strcmp(d->u.sn, sn)))
7272 return (d);
7273 }
7274 }
7275
7276 return (NULL);
7277 }
7278
7279 static struct {
7280 const char *ln;
7281 char sn;
7282 int value;
7283 } dwarf_op[] = {
7284 {"rawline", 'l', DW_L},
7285 {"decodedline", 'L', DW_LL},
7286 {"info", 'i', DW_I},
7287 {"abbrev", 'a', DW_A},
7288 {"pubnames", 'p', DW_P},
7289 {"aranges", 'r', DW_R},
7290 {"ranges", 'r', DW_R},
7291 {"Ranges", 'R', DW_RR},
7292 {"macro", 'm', DW_M},
7293 {"frames", 'f', DW_F},
7294 {"frames-interp", 'F', DW_FF},
7295 {"str", 's', DW_S},
7296 {"loc", 'o', DW_O},
7297 {NULL, 0, 0}
7298 };
7299
7300 static void
parse_dwarf_op_short(struct readelf * re,const char * op)7301 parse_dwarf_op_short(struct readelf *re, const char *op)
7302 {
7303 int i;
7304
7305 if (op == NULL) {
7306 re->dop |= DW_DEFAULT_OPTIONS;
7307 return;
7308 }
7309
7310 for (; *op != '\0'; op++) {
7311 for (i = 0; dwarf_op[i].ln != NULL; i++) {
7312 if (dwarf_op[i].sn == *op) {
7313 re->dop |= dwarf_op[i].value;
7314 break;
7315 }
7316 }
7317 }
7318 }
7319
7320 static void
parse_dwarf_op_long(struct readelf * re,const char * op)7321 parse_dwarf_op_long(struct readelf *re, const char *op)
7322 {
7323 char *p, *token, *bp;
7324 int i;
7325
7326 if (op == NULL) {
7327 re->dop |= DW_DEFAULT_OPTIONS;
7328 return;
7329 }
7330
7331 if ((p = strdup(op)) == NULL)
7332 err(EXIT_FAILURE, "strdup failed");
7333 bp = p;
7334
7335 while ((token = strsep(&p, ",")) != NULL) {
7336 for (i = 0; dwarf_op[i].ln != NULL; i++) {
7337 if (!strcmp(token, dwarf_op[i].ln)) {
7338 re->dop |= dwarf_op[i].value;
7339 break;
7340 }
7341 }
7342 }
7343
7344 free(bp);
7345 }
7346
7347 static uint64_t
_read_lsb(Elf_Data * d,uint64_t * offsetp,int bytes_to_read)7348 _read_lsb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read)
7349 {
7350 uint64_t ret;
7351 uint8_t *src;
7352
7353 src = (uint8_t *) d->d_buf + *offsetp;
7354
7355 ret = 0;
7356 switch (bytes_to_read) {
7357 case 8:
7358 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40;
7359 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56;
7360 case 4:
7361 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24;
7362 case 2:
7363 ret |= ((uint64_t) src[1]) << 8;
7364 case 1:
7365 ret |= src[0];
7366 break;
7367 default:
7368 return (0);
7369 }
7370
7371 *offsetp += bytes_to_read;
7372
7373 return (ret);
7374 }
7375
7376 static uint64_t
_read_msb(Elf_Data * d,uint64_t * offsetp,int bytes_to_read)7377 _read_msb(Elf_Data *d, uint64_t *offsetp, int bytes_to_read)
7378 {
7379 uint64_t ret;
7380 uint8_t *src;
7381
7382 src = (uint8_t *) d->d_buf + *offsetp;
7383
7384 switch (bytes_to_read) {
7385 case 1:
7386 ret = src[0];
7387 break;
7388 case 2:
7389 ret = src[1] | ((uint64_t) src[0]) << 8;
7390 break;
7391 case 4:
7392 ret = src[3] | ((uint64_t) src[2]) << 8;
7393 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24;
7394 break;
7395 case 8:
7396 ret = src[7] | ((uint64_t) src[6]) << 8;
7397 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24;
7398 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40;
7399 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56;
7400 break;
7401 default:
7402 return (0);
7403 }
7404
7405 *offsetp += bytes_to_read;
7406
7407 return (ret);
7408 }
7409
7410 static uint64_t
_decode_lsb(uint8_t ** data,int bytes_to_read)7411 _decode_lsb(uint8_t **data, int bytes_to_read)
7412 {
7413 uint64_t ret;
7414 uint8_t *src;
7415
7416 src = *data;
7417
7418 ret = 0;
7419 switch (bytes_to_read) {
7420 case 8:
7421 ret |= ((uint64_t) src[4]) << 32 | ((uint64_t) src[5]) << 40;
7422 ret |= ((uint64_t) src[6]) << 48 | ((uint64_t) src[7]) << 56;
7423 case 4:
7424 ret |= ((uint64_t) src[2]) << 16 | ((uint64_t) src[3]) << 24;
7425 case 2:
7426 ret |= ((uint64_t) src[1]) << 8;
7427 case 1:
7428 ret |= src[0];
7429 break;
7430 default:
7431 return (0);
7432 }
7433
7434 *data += bytes_to_read;
7435
7436 return (ret);
7437 }
7438
7439 static uint64_t
_decode_msb(uint8_t ** data,int bytes_to_read)7440 _decode_msb(uint8_t **data, int bytes_to_read)
7441 {
7442 uint64_t ret;
7443 uint8_t *src;
7444
7445 src = *data;
7446
7447 ret = 0;
7448 switch (bytes_to_read) {
7449 case 1:
7450 ret = src[0];
7451 break;
7452 case 2:
7453 ret = src[1] | ((uint64_t) src[0]) << 8;
7454 break;
7455 case 4:
7456 ret = src[3] | ((uint64_t) src[2]) << 8;
7457 ret |= ((uint64_t) src[1]) << 16 | ((uint64_t) src[0]) << 24;
7458 break;
7459 case 8:
7460 ret = src[7] | ((uint64_t) src[6]) << 8;
7461 ret |= ((uint64_t) src[5]) << 16 | ((uint64_t) src[4]) << 24;
7462 ret |= ((uint64_t) src[3]) << 32 | ((uint64_t) src[2]) << 40;
7463 ret |= ((uint64_t) src[1]) << 48 | ((uint64_t) src[0]) << 56;
7464 break;
7465 default:
7466 return (0);
7467 break;
7468 }
7469
7470 *data += bytes_to_read;
7471
7472 return (ret);
7473 }
7474
7475 static int64_t
_decode_sleb128(uint8_t ** dp,uint8_t * dpe)7476 _decode_sleb128(uint8_t **dp, uint8_t *dpe)
7477 {
7478 int64_t ret = 0;
7479 uint8_t b = 0;
7480 int shift = 0;
7481
7482 uint8_t *src = *dp;
7483
7484 do {
7485 if (src >= dpe)
7486 break;
7487 b = *src++;
7488 ret |= ((b & 0x7f) << shift);
7489 shift += 7;
7490 } while ((b & 0x80) != 0);
7491
7492 if (shift < 32 && (b & 0x40) != 0)
7493 ret |= (-1 << shift);
7494
7495 *dp = src;
7496
7497 return (ret);
7498 }
7499
7500 static uint64_t
_decode_uleb128(uint8_t ** dp,uint8_t * dpe)7501 _decode_uleb128(uint8_t **dp, uint8_t *dpe)
7502 {
7503 uint64_t ret = 0;
7504 uint8_t b;
7505 int shift = 0;
7506
7507 uint8_t *src = *dp;
7508
7509 do {
7510 if (src >= dpe)
7511 break;
7512 b = *src++;
7513 ret |= ((b & 0x7f) << shift);
7514 shift += 7;
7515 } while ((b & 0x80) != 0);
7516
7517 *dp = src;
7518
7519 return (ret);
7520 }
7521
7522 static void
readelf_version(void)7523 readelf_version(void)
7524 {
7525 (void) printf("%s (%s)\n", ELFTC_GETPROGNAME(),
7526 elftc_version());
7527 exit(EXIT_SUCCESS);
7528 }
7529
7530 #define USAGE_MESSAGE "\
7531 Usage: %s [options] file...\n\
7532 Display information about ELF objects and ar(1) archives.\n\n\
7533 Options:\n\
7534 -a | --all Equivalent to specifying options '-dhIlrsASV'.\n\
7535 -c | --archive-index Print the archive symbol table for archives.\n\
7536 -d | --dynamic Print the contents of SHT_DYNAMIC sections.\n\
7537 -e | --headers Print all headers in the object.\n\
7538 -g | --section-groups Print the contents of the section groups.\n\
7539 -h | --file-header Print the file header for the object.\n\
7540 -l | --program-headers Print the PHDR table for the object.\n\
7541 -n | --notes Print the contents of SHT_NOTE sections.\n\
7542 -p INDEX | --string-dump=INDEX\n\
7543 Print the contents of section at index INDEX.\n\
7544 -r | --relocs Print relocation information.\n\
7545 -s | --syms | --symbols Print symbol tables.\n\
7546 -t | --section-details Print additional information about sections.\n\
7547 -v | --version Print a version identifier and exit.\n\
7548 -x INDEX | --hex-dump=INDEX\n\
7549 Display contents of a section as hexadecimal.\n\
7550 -A | --arch-specific (accepted, but ignored)\n\
7551 -D | --use-dynamic Print the symbol table specified by the DT_SYMTAB\n\
7552 entry in the \".dynamic\" section.\n\
7553 -H | --help Print a help message.\n\
7554 -I | --histogram Print information on bucket list lengths for \n\
7555 hash sections.\n\
7556 -N | --full-section-name (accepted, but ignored)\n\
7557 -S | --sections | --section-headers\n\
7558 Print information about section headers.\n\
7559 -V | --version-info Print symbol versoning information.\n\
7560 -W | --wide Print information without wrapping long lines.\n"
7561
7562
7563 static void
readelf_usage(void)7564 readelf_usage(void)
7565 {
7566 fprintf(stderr, USAGE_MESSAGE, ELFTC_GETPROGNAME());
7567 exit(EXIT_FAILURE);
7568 }
7569
7570 int
main(int argc,char ** argv)7571 main(int argc, char **argv)
7572 {
7573 struct readelf *re, re_storage;
7574 unsigned long si;
7575 int opt, i;
7576 char *ep;
7577
7578 re = &re_storage;
7579 memset(re, 0, sizeof(*re));
7580 STAILQ_INIT(&re->v_dumpop);
7581
7582 while ((opt = getopt_long(argc, argv, "AacDdegHhIi:lNnp:rSstuVvWw::x:",
7583 longopts, NULL)) != -1) {
7584 switch(opt) {
7585 case '?':
7586 readelf_usage();
7587 break;
7588 case 'A':
7589 re->options |= RE_AA;
7590 break;
7591 case 'a':
7592 re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II |
7593 RE_L | RE_R | RE_SS | RE_S | RE_VV;
7594 break;
7595 case 'c':
7596 re->options |= RE_C;
7597 break;
7598 case 'D':
7599 re->options |= RE_DD;
7600 break;
7601 case 'd':
7602 re->options |= RE_D;
7603 break;
7604 case 'e':
7605 re->options |= RE_H | RE_L | RE_SS;
7606 break;
7607 case 'g':
7608 re->options |= RE_G;
7609 break;
7610 case 'H':
7611 readelf_usage();
7612 break;
7613 case 'h':
7614 re->options |= RE_H;
7615 break;
7616 case 'I':
7617 re->options |= RE_II;
7618 break;
7619 case 'i':
7620 /* Not implemented yet. */
7621 break;
7622 case 'l':
7623 re->options |= RE_L;
7624 break;
7625 case 'N':
7626 re->options |= RE_NN;
7627 break;
7628 case 'n':
7629 re->options |= RE_N;
7630 break;
7631 case 'p':
7632 re->options |= RE_P;
7633 si = strtoul(optarg, &ep, 10);
7634 if (*ep == '\0')
7635 add_dumpop(re, (size_t) si, NULL, STR_DUMP,
7636 DUMP_BY_INDEX);
7637 else
7638 add_dumpop(re, 0, optarg, STR_DUMP,
7639 DUMP_BY_NAME);
7640 break;
7641 case 'r':
7642 re->options |= RE_R;
7643 break;
7644 case 'S':
7645 re->options |= RE_SS;
7646 break;
7647 case 's':
7648 re->options |= RE_S;
7649 break;
7650 case 't':
7651 re->options |= RE_T;
7652 break;
7653 case 'u':
7654 re->options |= RE_U;
7655 break;
7656 case 'V':
7657 re->options |= RE_VV;
7658 break;
7659 case 'v':
7660 readelf_version();
7661 break;
7662 case 'W':
7663 re->options |= RE_WW;
7664 break;
7665 case 'w':
7666 re->options |= RE_W;
7667 parse_dwarf_op_short(re, optarg);
7668 break;
7669 case 'x':
7670 re->options |= RE_X;
7671 si = strtoul(optarg, &ep, 10);
7672 if (*ep == '\0')
7673 add_dumpop(re, (size_t) si, NULL, HEX_DUMP,
7674 DUMP_BY_INDEX);
7675 else
7676 add_dumpop(re, 0, optarg, HEX_DUMP,
7677 DUMP_BY_NAME);
7678 break;
7679 case OPTION_DEBUG_DUMP:
7680 re->options |= RE_W;
7681 parse_dwarf_op_long(re, optarg);
7682 }
7683 }
7684
7685 argv += optind;
7686 argc -= optind;
7687
7688 if (argc == 0 || re->options == 0)
7689 readelf_usage();
7690
7691 if (argc > 1)
7692 re->flags |= DISPLAY_FILENAME;
7693
7694 if (elf_version(EV_CURRENT) == EV_NONE)
7695 errx(EXIT_FAILURE, "ELF library initialization failed: %s",
7696 elf_errmsg(-1));
7697
7698 for (i = 0; i < argc; i++) {
7699 re->filename = argv[i];
7700 dump_object(re);
7701 }
7702
7703 exit(EXIT_SUCCESS);
7704 }
7705