Commit | Line | Data |
---|---|---|
c889ba80 | 1 | /* This is included from relocs_32/64.c */ |
873b5271 | 2 | |
bf11655c KC |
3 | #define ElfW(type) _ElfW(ELF_BITS, type) |
4 | #define _ElfW(bits, type) __ElfW(bits, type) | |
5 | #define __ElfW(bits, type) Elf##bits##_##type | |
6 | ||
946166af | 7 | #define Elf_Addr ElfW(Addr) |
bf11655c KC |
8 | #define Elf_Ehdr ElfW(Ehdr) |
9 | #define Elf_Phdr ElfW(Phdr) | |
10 | #define Elf_Shdr ElfW(Shdr) | |
11 | #define Elf_Sym ElfW(Sym) | |
12 | ||
bf11655c | 13 | static Elf_Ehdr ehdr; |
5d442e63 KC |
14 | |
15 | struct relocs { | |
16 | uint32_t *offset; | |
17 | unsigned long count; | |
18 | unsigned long size; | |
19 | }; | |
20 | ||
21 | static struct relocs relocs16; | |
22 | static struct relocs relocs32; | |
946166af | 23 | static struct relocs relocs64; |
968de4f0 | 24 | |
908ec7af | 25 | struct section { |
bf11655c | 26 | Elf_Shdr shdr; |
908ec7af | 27 | struct section *link; |
bf11655c KC |
28 | Elf_Sym *symtab; |
29 | Elf_Rel *reltab; | |
908ec7af PA |
30 | char *strtab; |
31 | }; | |
32 | static struct section *secs; | |
33 | ||
6520fe55 | 34 | static const char * const sym_regex_kernel[S_NSYMTYPES] = { |
6a044b3a VG |
35 | /* |
36 | * Following symbols have been audited. There values are constant and do | |
37 | * not change if bzImage is loaded at a different physical address than | |
38 | * the address for which it has been compiled. Don't warn user about | |
39 | * absolute relocations present w.r.t these symbols. | |
40 | */ | |
6520fe55 | 41 | [S_ABS] = |
873b5271 PA |
42 | "^(xen_irq_disable_direct_reloc$|" |
43 | "xen_save_fl_direct_reloc$|" | |
44 | "VDSO|" | |
6520fe55 | 45 | "__crc_)", |
6a044b3a | 46 | |
873b5271 PA |
47 | /* |
48 | * These symbols are known to be relative, even if the linker marks them | |
49 | * as absolute (typically defined outside any section in the linker script.) | |
50 | */ | |
6520fe55 | 51 | [S_REL] = |
a3e854d9 PA |
52 | "^(__init_(begin|end)|" |
53 | "__x86_cpu_dev_(start|end)|" | |
54 | "(__parainstructions|__alt_instructions)(|_end)|" | |
55 | "(__iommu_table|__apicdrivers|__smp_locks)(|_end)|" | |
fd952815 PA |
56 | "__(start|end)_pci_.*|" |
57 | "__(start|end)_builtin_fw|" | |
58 | "__(start|stop)___ksymtab(|_gpl|_unused|_unused_gpl|_gpl_future)|" | |
59 | "__(start|stop)___kcrctab(|_gpl|_unused|_unused_gpl|_gpl_future)|" | |
60 | "__(start|stop)___param|" | |
61 | "__(start|stop)___modver|" | |
62 | "__(start|stop)___bug_table|" | |
63 | "__tracedata_(start|end)|" | |
64 | "__(start|stop)_notes|" | |
65 | "__end_rodata|" | |
66 | "__initramfs_start|" | |
ea17e741 | 67 | "(jiffies|jiffies_64)|" |
c889ba80 | 68 | #if ELF_BITS == 64 |
946166af KC |
69 | "__per_cpu_load|" |
70 | "init_per_cpu__.*|" | |
71 | "__end_rodata_hpage_align|" | |
72 | #endif | |
d2312e33 | 73 | "__vvar_page|" |
a3e854d9 | 74 | "_end)$" |
6520fe55 PA |
75 | }; |
76 | ||
77 | ||
78 | static const char * const sym_regex_realmode[S_NSYMTYPES] = { | |
2a6de314 PA |
79 | /* |
80 | * These symbols are known to be relative, even if the linker marks them | |
81 | * as absolute (typically defined outside any section in the linker script.) | |
82 | */ | |
83 | [S_REL] = | |
84 | "^pa_", | |
85 | ||
6520fe55 PA |
86 | /* |
87 | * These are 16-bit segment symbols when compiling 16-bit code. | |
88 | */ | |
89 | [S_SEG] = | |
90 | "^real_mode_seg$", | |
91 | ||
92 | /* | |
93 | * These are offsets belonging to segments, as opposed to linear addresses, | |
94 | * when compiling 16-bit code. | |
95 | */ | |
96 | [S_LIN] = | |
97 | "^pa_", | |
98 | }; | |
99 | ||
100 | static const char * const *sym_regex; | |
101 | ||
102 | static regex_t sym_regex_c[S_NSYMTYPES]; | |
103 | static int is_reloc(enum symtype type, const char *sym_name) | |
6a044b3a | 104 | { |
6520fe55 PA |
105 | return sym_regex[type] && |
106 | !regexec(&sym_regex_c[type], sym_name, 0, NULL, 0); | |
873b5271 | 107 | } |
6a044b3a | 108 | |
6520fe55 | 109 | static void regex_init(int use_real_mode) |
873b5271 PA |
110 | { |
111 | char errbuf[128]; | |
112 | int err; | |
6520fe55 | 113 | int i; |
873b5271 | 114 | |
6520fe55 PA |
115 | if (use_real_mode) |
116 | sym_regex = sym_regex_realmode; | |
117 | else | |
118 | sym_regex = sym_regex_kernel; | |
119 | ||
120 | for (i = 0; i < S_NSYMTYPES; i++) { | |
121 | if (!sym_regex[i]) | |
122 | continue; | |
123 | ||
124 | err = regcomp(&sym_regex_c[i], sym_regex[i], | |
125 | REG_EXTENDED|REG_NOSUB); | |
126 | ||
127 | if (err) { | |
128 | regerror(err, &sym_regex_c[i], errbuf, sizeof errbuf); | |
129 | die("%s", errbuf); | |
130 | } | |
873b5271 | 131 | } |
6a044b3a VG |
132 | } |
133 | ||
968de4f0 EB |
134 | static const char *sym_type(unsigned type) |
135 | { | |
136 | static const char *type_name[] = { | |
137 | #define SYM_TYPE(X) [X] = #X | |
138 | SYM_TYPE(STT_NOTYPE), | |
139 | SYM_TYPE(STT_OBJECT), | |
140 | SYM_TYPE(STT_FUNC), | |
141 | SYM_TYPE(STT_SECTION), | |
142 | SYM_TYPE(STT_FILE), | |
143 | SYM_TYPE(STT_COMMON), | |
144 | SYM_TYPE(STT_TLS), | |
145 | #undef SYM_TYPE | |
146 | }; | |
147 | const char *name = "unknown sym type name"; | |
ca820181 | 148 | if (type < ARRAY_SIZE(type_name)) { |
968de4f0 EB |
149 | name = type_name[type]; |
150 | } | |
151 | return name; | |
152 | } | |
153 | ||
154 | static const char *sym_bind(unsigned bind) | |
155 | { | |
156 | static const char *bind_name[] = { | |
157 | #define SYM_BIND(X) [X] = #X | |
158 | SYM_BIND(STB_LOCAL), | |
159 | SYM_BIND(STB_GLOBAL), | |
160 | SYM_BIND(STB_WEAK), | |
161 | #undef SYM_BIND | |
162 | }; | |
163 | const char *name = "unknown sym bind name"; | |
ca820181 | 164 | if (bind < ARRAY_SIZE(bind_name)) { |
968de4f0 EB |
165 | name = bind_name[bind]; |
166 | } | |
167 | return name; | |
168 | } | |
169 | ||
170 | static const char *sym_visibility(unsigned visibility) | |
171 | { | |
172 | static const char *visibility_name[] = { | |
173 | #define SYM_VISIBILITY(X) [X] = #X | |
174 | SYM_VISIBILITY(STV_DEFAULT), | |
175 | SYM_VISIBILITY(STV_INTERNAL), | |
176 | SYM_VISIBILITY(STV_HIDDEN), | |
177 | SYM_VISIBILITY(STV_PROTECTED), | |
178 | #undef SYM_VISIBILITY | |
179 | }; | |
180 | const char *name = "unknown sym visibility name"; | |
ca820181 | 181 | if (visibility < ARRAY_SIZE(visibility_name)) { |
968de4f0 EB |
182 | name = visibility_name[visibility]; |
183 | } | |
184 | return name; | |
185 | } | |
186 | ||
187 | static const char *rel_type(unsigned type) | |
188 | { | |
189 | static const char *type_name[] = { | |
190 | #define REL_TYPE(X) [X] = #X | |
c889ba80 | 191 | #if ELF_BITS == 64 |
946166af KC |
192 | REL_TYPE(R_X86_64_NONE), |
193 | REL_TYPE(R_X86_64_64), | |
194 | REL_TYPE(R_X86_64_PC32), | |
195 | REL_TYPE(R_X86_64_GOT32), | |
196 | REL_TYPE(R_X86_64_PLT32), | |
197 | REL_TYPE(R_X86_64_COPY), | |
198 | REL_TYPE(R_X86_64_GLOB_DAT), | |
199 | REL_TYPE(R_X86_64_JUMP_SLOT), | |
200 | REL_TYPE(R_X86_64_RELATIVE), | |
201 | REL_TYPE(R_X86_64_GOTPCREL), | |
202 | REL_TYPE(R_X86_64_32), | |
203 | REL_TYPE(R_X86_64_32S), | |
204 | REL_TYPE(R_X86_64_16), | |
205 | REL_TYPE(R_X86_64_PC16), | |
206 | REL_TYPE(R_X86_64_8), | |
207 | REL_TYPE(R_X86_64_PC8), | |
208 | #else | |
968de4f0 EB |
209 | REL_TYPE(R_386_NONE), |
210 | REL_TYPE(R_386_32), | |
211 | REL_TYPE(R_386_PC32), | |
212 | REL_TYPE(R_386_GOT32), | |
213 | REL_TYPE(R_386_PLT32), | |
214 | REL_TYPE(R_386_COPY), | |
215 | REL_TYPE(R_386_GLOB_DAT), | |
216 | REL_TYPE(R_386_JMP_SLOT), | |
217 | REL_TYPE(R_386_RELATIVE), | |
218 | REL_TYPE(R_386_GOTOFF), | |
219 | REL_TYPE(R_386_GOTPC), | |
6520fe55 PA |
220 | REL_TYPE(R_386_8), |
221 | REL_TYPE(R_386_PC8), | |
222 | REL_TYPE(R_386_16), | |
223 | REL_TYPE(R_386_PC16), | |
946166af | 224 | #endif |
968de4f0 EB |
225 | #undef REL_TYPE |
226 | }; | |
227 | const char *name = "unknown type rel type name"; | |
873b5271 | 228 | if (type < ARRAY_SIZE(type_name) && type_name[type]) { |
968de4f0 EB |
229 | name = type_name[type]; |
230 | } | |
231 | return name; | |
232 | } | |
233 | ||
234 | static const char *sec_name(unsigned shndx) | |
235 | { | |
236 | const char *sec_strtab; | |
237 | const char *name; | |
908ec7af | 238 | sec_strtab = secs[ehdr.e_shstrndx].strtab; |
968de4f0 EB |
239 | name = "<noname>"; |
240 | if (shndx < ehdr.e_shnum) { | |
908ec7af | 241 | name = sec_strtab + secs[shndx].shdr.sh_name; |
968de4f0 EB |
242 | } |
243 | else if (shndx == SHN_ABS) { | |
244 | name = "ABSOLUTE"; | |
245 | } | |
246 | else if (shndx == SHN_COMMON) { | |
247 | name = "COMMON"; | |
248 | } | |
249 | return name; | |
250 | } | |
251 | ||
bf11655c | 252 | static const char *sym_name(const char *sym_strtab, Elf_Sym *sym) |
968de4f0 EB |
253 | { |
254 | const char *name; | |
255 | name = "<noname>"; | |
256 | if (sym->st_name) { | |
257 | name = sym_strtab + sym->st_name; | |
258 | } | |
259 | else { | |
6520fe55 | 260 | name = sec_name(sym->st_shndx); |
968de4f0 EB |
261 | } |
262 | return name; | |
263 | } | |
264 | ||
946166af KC |
265 | static Elf_Sym *sym_lookup(const char *symname) |
266 | { | |
267 | int i; | |
268 | for (i = 0; i < ehdr.e_shnum; i++) { | |
269 | struct section *sec = &secs[i]; | |
270 | long nsyms; | |
271 | char *strtab; | |
272 | Elf_Sym *symtab; | |
273 | Elf_Sym *sym; | |
968de4f0 | 274 | |
946166af KC |
275 | if (sec->shdr.sh_type != SHT_SYMTAB) |
276 | continue; | |
277 | ||
278 | nsyms = sec->shdr.sh_size/sizeof(Elf_Sym); | |
279 | symtab = sec->symtab; | |
280 | strtab = sec->link->strtab; | |
281 | ||
282 | for (sym = symtab; --nsyms >= 0; sym++) { | |
283 | if (!sym->st_name) | |
284 | continue; | |
285 | if (strcmp(symname, strtab + sym->st_name) == 0) | |
286 | return sym; | |
287 | } | |
288 | } | |
289 | return 0; | |
290 | } | |
968de4f0 | 291 | |
13da9e20 | 292 | #if BYTE_ORDER == LITTLE_ENDIAN |
968de4f0 EB |
293 | #define le16_to_cpu(val) (val) |
294 | #define le32_to_cpu(val) (val) | |
946166af | 295 | #define le64_to_cpu(val) (val) |
968de4f0 | 296 | #endif |
13da9e20 | 297 | #if BYTE_ORDER == BIG_ENDIAN |
968de4f0 EB |
298 | #define le16_to_cpu(val) bswap_16(val) |
299 | #define le32_to_cpu(val) bswap_32(val) | |
946166af | 300 | #define le64_to_cpu(val) bswap_64(val) |
968de4f0 EB |
301 | #endif |
302 | ||
303 | static uint16_t elf16_to_cpu(uint16_t val) | |
304 | { | |
305 | return le16_to_cpu(val); | |
306 | } | |
307 | ||
308 | static uint32_t elf32_to_cpu(uint32_t val) | |
309 | { | |
310 | return le32_to_cpu(val); | |
311 | } | |
312 | ||
bf11655c KC |
313 | #define elf_half_to_cpu(x) elf16_to_cpu(x) |
314 | #define elf_word_to_cpu(x) elf32_to_cpu(x) | |
946166af | 315 | |
c889ba80 | 316 | #if ELF_BITS == 64 |
946166af KC |
317 | static uint64_t elf64_to_cpu(uint64_t val) |
318 | { | |
319 | return le64_to_cpu(val); | |
320 | } | |
321 | #define elf_addr_to_cpu(x) elf64_to_cpu(x) | |
322 | #define elf_off_to_cpu(x) elf64_to_cpu(x) | |
323 | #define elf_xword_to_cpu(x) elf64_to_cpu(x) | |
324 | #else | |
bf11655c KC |
325 | #define elf_addr_to_cpu(x) elf32_to_cpu(x) |
326 | #define elf_off_to_cpu(x) elf32_to_cpu(x) | |
327 | #define elf_xword_to_cpu(x) elf32_to_cpu(x) | |
946166af | 328 | #endif |
bf11655c | 329 | |
968de4f0 EB |
330 | static void read_ehdr(FILE *fp) |
331 | { | |
332 | if (fread(&ehdr, sizeof(ehdr), 1, fp) != 1) { | |
333 | die("Cannot read ELF header: %s\n", | |
334 | strerror(errno)); | |
335 | } | |
8bd1796d | 336 | if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) { |
968de4f0 EB |
337 | die("No ELF magic\n"); |
338 | } | |
bf11655c KC |
339 | if (ehdr.e_ident[EI_CLASS] != ELF_CLASS) { |
340 | die("Not a %d bit executable\n", ELF_BITS); | |
968de4f0 EB |
341 | } |
342 | if (ehdr.e_ident[EI_DATA] != ELFDATA2LSB) { | |
343 | die("Not a LSB ELF executable\n"); | |
344 | } | |
345 | if (ehdr.e_ident[EI_VERSION] != EV_CURRENT) { | |
346 | die("Unknown ELF version\n"); | |
347 | } | |
348 | /* Convert the fields to native endian */ | |
bf11655c KC |
349 | ehdr.e_type = elf_half_to_cpu(ehdr.e_type); |
350 | ehdr.e_machine = elf_half_to_cpu(ehdr.e_machine); | |
351 | ehdr.e_version = elf_word_to_cpu(ehdr.e_version); | |
352 | ehdr.e_entry = elf_addr_to_cpu(ehdr.e_entry); | |
353 | ehdr.e_phoff = elf_off_to_cpu(ehdr.e_phoff); | |
354 | ehdr.e_shoff = elf_off_to_cpu(ehdr.e_shoff); | |
355 | ehdr.e_flags = elf_word_to_cpu(ehdr.e_flags); | |
356 | ehdr.e_ehsize = elf_half_to_cpu(ehdr.e_ehsize); | |
357 | ehdr.e_phentsize = elf_half_to_cpu(ehdr.e_phentsize); | |
358 | ehdr.e_phnum = elf_half_to_cpu(ehdr.e_phnum); | |
359 | ehdr.e_shentsize = elf_half_to_cpu(ehdr.e_shentsize); | |
360 | ehdr.e_shnum = elf_half_to_cpu(ehdr.e_shnum); | |
361 | ehdr.e_shstrndx = elf_half_to_cpu(ehdr.e_shstrndx); | |
968de4f0 EB |
362 | |
363 | if ((ehdr.e_type != ET_EXEC) && (ehdr.e_type != ET_DYN)) { | |
364 | die("Unsupported ELF header type\n"); | |
365 | } | |
bf11655c KC |
366 | if (ehdr.e_machine != ELF_MACHINE) { |
367 | die("Not for %s\n", ELF_MACHINE_NAME); | |
968de4f0 EB |
368 | } |
369 | if (ehdr.e_version != EV_CURRENT) { | |
370 | die("Unknown ELF version\n"); | |
371 | } | |
bf11655c | 372 | if (ehdr.e_ehsize != sizeof(Elf_Ehdr)) { |
968de4f0 EB |
373 | die("Bad Elf header size\n"); |
374 | } | |
bf11655c | 375 | if (ehdr.e_phentsize != sizeof(Elf_Phdr)) { |
968de4f0 EB |
376 | die("Bad program header entry\n"); |
377 | } | |
bf11655c | 378 | if (ehdr.e_shentsize != sizeof(Elf_Shdr)) { |
968de4f0 EB |
379 | die("Bad section header entry\n"); |
380 | } | |
381 | if (ehdr.e_shstrndx >= ehdr.e_shnum) { | |
382 | die("String table index out of bounds\n"); | |
383 | } | |
384 | } | |
385 | ||
386 | static void read_shdrs(FILE *fp) | |
387 | { | |
388 | int i; | |
bf11655c | 389 | Elf_Shdr shdr; |
908ec7af PA |
390 | |
391 | secs = calloc(ehdr.e_shnum, sizeof(struct section)); | |
392 | if (!secs) { | |
393 | die("Unable to allocate %d section headers\n", | |
394 | ehdr.e_shnum); | |
968de4f0 EB |
395 | } |
396 | if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) { | |
397 | die("Seek to %d failed: %s\n", | |
398 | ehdr.e_shoff, strerror(errno)); | |
399 | } | |
908ec7af PA |
400 | for (i = 0; i < ehdr.e_shnum; i++) { |
401 | struct section *sec = &secs[i]; | |
402 | if (fread(&shdr, sizeof shdr, 1, fp) != 1) | |
403 | die("Cannot read ELF section headers %d/%d: %s\n", | |
404 | i, ehdr.e_shnum, strerror(errno)); | |
bf11655c KC |
405 | sec->shdr.sh_name = elf_word_to_cpu(shdr.sh_name); |
406 | sec->shdr.sh_type = elf_word_to_cpu(shdr.sh_type); | |
407 | sec->shdr.sh_flags = elf_xword_to_cpu(shdr.sh_flags); | |
408 | sec->shdr.sh_addr = elf_addr_to_cpu(shdr.sh_addr); | |
409 | sec->shdr.sh_offset = elf_off_to_cpu(shdr.sh_offset); | |
410 | sec->shdr.sh_size = elf_xword_to_cpu(shdr.sh_size); | |
411 | sec->shdr.sh_link = elf_word_to_cpu(shdr.sh_link); | |
412 | sec->shdr.sh_info = elf_word_to_cpu(shdr.sh_info); | |
413 | sec->shdr.sh_addralign = elf_xword_to_cpu(shdr.sh_addralign); | |
414 | sec->shdr.sh_entsize = elf_xword_to_cpu(shdr.sh_entsize); | |
908ec7af PA |
415 | if (sec->shdr.sh_link < ehdr.e_shnum) |
416 | sec->link = &secs[sec->shdr.sh_link]; | |
968de4f0 EB |
417 | } |
418 | ||
419 | } | |
420 | ||
421 | static void read_strtabs(FILE *fp) | |
422 | { | |
423 | int i; | |
908ec7af PA |
424 | for (i = 0; i < ehdr.e_shnum; i++) { |
425 | struct section *sec = &secs[i]; | |
426 | if (sec->shdr.sh_type != SHT_STRTAB) { | |
968de4f0 EB |
427 | continue; |
428 | } | |
908ec7af PA |
429 | sec->strtab = malloc(sec->shdr.sh_size); |
430 | if (!sec->strtab) { | |
968de4f0 | 431 | die("malloc of %d bytes for strtab failed\n", |
908ec7af | 432 | sec->shdr.sh_size); |
968de4f0 | 433 | } |
908ec7af | 434 | if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) { |
968de4f0 | 435 | die("Seek to %d failed: %s\n", |
908ec7af | 436 | sec->shdr.sh_offset, strerror(errno)); |
968de4f0 | 437 | } |
908ec7af PA |
438 | if (fread(sec->strtab, 1, sec->shdr.sh_size, fp) |
439 | != sec->shdr.sh_size) { | |
968de4f0 EB |
440 | die("Cannot read symbol table: %s\n", |
441 | strerror(errno)); | |
442 | } | |
443 | } | |
444 | } | |
445 | ||
446 | static void read_symtabs(FILE *fp) | |
447 | { | |
448 | int i,j; | |
908ec7af PA |
449 | for (i = 0; i < ehdr.e_shnum; i++) { |
450 | struct section *sec = &secs[i]; | |
451 | if (sec->shdr.sh_type != SHT_SYMTAB) { | |
968de4f0 EB |
452 | continue; |
453 | } | |
908ec7af PA |
454 | sec->symtab = malloc(sec->shdr.sh_size); |
455 | if (!sec->symtab) { | |
968de4f0 | 456 | die("malloc of %d bytes for symtab failed\n", |
908ec7af | 457 | sec->shdr.sh_size); |
968de4f0 | 458 | } |
908ec7af | 459 | if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) { |
968de4f0 | 460 | die("Seek to %d failed: %s\n", |
908ec7af | 461 | sec->shdr.sh_offset, strerror(errno)); |
968de4f0 | 462 | } |
908ec7af PA |
463 | if (fread(sec->symtab, 1, sec->shdr.sh_size, fp) |
464 | != sec->shdr.sh_size) { | |
968de4f0 EB |
465 | die("Cannot read symbol table: %s\n", |
466 | strerror(errno)); | |
467 | } | |
bf11655c KC |
468 | for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Sym); j++) { |
469 | Elf_Sym *sym = &sec->symtab[j]; | |
470 | sym->st_name = elf_word_to_cpu(sym->st_name); | |
471 | sym->st_value = elf_addr_to_cpu(sym->st_value); | |
472 | sym->st_size = elf_xword_to_cpu(sym->st_size); | |
473 | sym->st_shndx = elf_half_to_cpu(sym->st_shndx); | |
968de4f0 EB |
474 | } |
475 | } | |
476 | } | |
477 | ||
478 | ||
479 | static void read_relocs(FILE *fp) | |
480 | { | |
481 | int i,j; | |
908ec7af PA |
482 | for (i = 0; i < ehdr.e_shnum; i++) { |
483 | struct section *sec = &secs[i]; | |
bf11655c | 484 | if (sec->shdr.sh_type != SHT_REL_TYPE) { |
968de4f0 EB |
485 | continue; |
486 | } | |
908ec7af PA |
487 | sec->reltab = malloc(sec->shdr.sh_size); |
488 | if (!sec->reltab) { | |
968de4f0 | 489 | die("malloc of %d bytes for relocs failed\n", |
908ec7af | 490 | sec->shdr.sh_size); |
968de4f0 | 491 | } |
908ec7af | 492 | if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) { |
968de4f0 | 493 | die("Seek to %d failed: %s\n", |
908ec7af | 494 | sec->shdr.sh_offset, strerror(errno)); |
968de4f0 | 495 | } |
908ec7af PA |
496 | if (fread(sec->reltab, 1, sec->shdr.sh_size, fp) |
497 | != sec->shdr.sh_size) { | |
968de4f0 EB |
498 | die("Cannot read symbol table: %s\n", |
499 | strerror(errno)); | |
500 | } | |
bf11655c KC |
501 | for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) { |
502 | Elf_Rel *rel = &sec->reltab[j]; | |
503 | rel->r_offset = elf_addr_to_cpu(rel->r_offset); | |
504 | rel->r_info = elf_xword_to_cpu(rel->r_info); | |
946166af KC |
505 | #if (SHT_REL_TYPE == SHT_RELA) |
506 | rel->r_addend = elf_xword_to_cpu(rel->r_addend); | |
507 | #endif | |
968de4f0 EB |
508 | } |
509 | } | |
510 | } | |
511 | ||
512 | ||
513 | static void print_absolute_symbols(void) | |
514 | { | |
515 | int i; | |
946166af KC |
516 | const char *format; |
517 | ||
c889ba80 | 518 | if (ELF_BITS == 64) |
946166af KC |
519 | format = "%5d %016"PRIx64" %5"PRId64" %10s %10s %12s %s\n"; |
520 | else | |
521 | format = "%5d %08"PRIx32" %5"PRId32" %10s %10s %12s %s\n"; | |
522 | ||
968de4f0 EB |
523 | printf("Absolute symbols\n"); |
524 | printf(" Num: Value Size Type Bind Visibility Name\n"); | |
908ec7af PA |
525 | for (i = 0; i < ehdr.e_shnum; i++) { |
526 | struct section *sec = &secs[i]; | |
968de4f0 | 527 | char *sym_strtab; |
968de4f0 | 528 | int j; |
908ec7af PA |
529 | |
530 | if (sec->shdr.sh_type != SHT_SYMTAB) { | |
968de4f0 EB |
531 | continue; |
532 | } | |
908ec7af | 533 | sym_strtab = sec->link->strtab; |
bf11655c KC |
534 | for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Sym); j++) { |
535 | Elf_Sym *sym; | |
968de4f0 | 536 | const char *name; |
908ec7af | 537 | sym = &sec->symtab[j]; |
968de4f0 EB |
538 | name = sym_name(sym_strtab, sym); |
539 | if (sym->st_shndx != SHN_ABS) { | |
540 | continue; | |
541 | } | |
946166af | 542 | printf(format, |
968de4f0 | 543 | j, sym->st_value, sym->st_size, |
bf11655c KC |
544 | sym_type(ELF_ST_TYPE(sym->st_info)), |
545 | sym_bind(ELF_ST_BIND(sym->st_info)), | |
546 | sym_visibility(ELF_ST_VISIBILITY(sym->st_other)), | |
968de4f0 EB |
547 | name); |
548 | } | |
549 | } | |
550 | printf("\n"); | |
551 | } | |
552 | ||
553 | static void print_absolute_relocs(void) | |
554 | { | |
6a044b3a | 555 | int i, printed = 0; |
946166af KC |
556 | const char *format; |
557 | ||
c889ba80 | 558 | if (ELF_BITS == 64) |
946166af KC |
559 | format = "%016"PRIx64" %016"PRIx64" %10s %016"PRIx64" %s\n"; |
560 | else | |
561 | format = "%08"PRIx32" %08"PRIx32" %10s %08"PRIx32" %s\n"; | |
6a044b3a | 562 | |
908ec7af PA |
563 | for (i = 0; i < ehdr.e_shnum; i++) { |
564 | struct section *sec = &secs[i]; | |
565 | struct section *sec_applies, *sec_symtab; | |
968de4f0 | 566 | char *sym_strtab; |
bf11655c | 567 | Elf_Sym *sh_symtab; |
968de4f0 | 568 | int j; |
bf11655c | 569 | if (sec->shdr.sh_type != SHT_REL_TYPE) { |
968de4f0 EB |
570 | continue; |
571 | } | |
908ec7af PA |
572 | sec_symtab = sec->link; |
573 | sec_applies = &secs[sec->shdr.sh_info]; | |
574 | if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) { | |
968de4f0 EB |
575 | continue; |
576 | } | |
908ec7af PA |
577 | sh_symtab = sec_symtab->symtab; |
578 | sym_strtab = sec_symtab->link->strtab; | |
bf11655c KC |
579 | for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) { |
580 | Elf_Rel *rel; | |
581 | Elf_Sym *sym; | |
968de4f0 | 582 | const char *name; |
908ec7af | 583 | rel = &sec->reltab[j]; |
bf11655c | 584 | sym = &sh_symtab[ELF_R_SYM(rel->r_info)]; |
968de4f0 EB |
585 | name = sym_name(sym_strtab, sym); |
586 | if (sym->st_shndx != SHN_ABS) { | |
587 | continue; | |
588 | } | |
6a044b3a VG |
589 | |
590 | /* Absolute symbols are not relocated if bzImage is | |
591 | * loaded at a non-compiled address. Display a warning | |
592 | * to user at compile time about the absolute | |
593 | * relocations present. | |
594 | * | |
595 | * User need to audit the code to make sure | |
596 | * some symbols which should have been section | |
597 | * relative have not become absolute because of some | |
598 | * linker optimization or wrong programming usage. | |
599 | * | |
600 | * Before warning check if this absolute symbol | |
601 | * relocation is harmless. | |
602 | */ | |
6520fe55 | 603 | if (is_reloc(S_ABS, name) || is_reloc(S_REL, name)) |
6a044b3a VG |
604 | continue; |
605 | ||
606 | if (!printed) { | |
607 | printf("WARNING: Absolute relocations" | |
608 | " present\n"); | |
609 | printf("Offset Info Type Sym.Value " | |
610 | "Sym.Name\n"); | |
611 | printed = 1; | |
612 | } | |
613 | ||
946166af | 614 | printf(format, |
968de4f0 EB |
615 | rel->r_offset, |
616 | rel->r_info, | |
bf11655c | 617 | rel_type(ELF_R_TYPE(rel->r_info)), |
968de4f0 EB |
618 | sym->st_value, |
619 | name); | |
620 | } | |
621 | } | |
6a044b3a VG |
622 | |
623 | if (printed) | |
624 | printf("\n"); | |
968de4f0 EB |
625 | } |
626 | ||
5d442e63 KC |
627 | static void add_reloc(struct relocs *r, uint32_t offset) |
628 | { | |
629 | if (r->count == r->size) { | |
630 | unsigned long newsize = r->size + 50000; | |
631 | void *mem = realloc(r->offset, newsize * sizeof(r->offset[0])); | |
632 | ||
633 | if (!mem) | |
634 | die("realloc of %ld entries for relocs failed\n", | |
635 | newsize); | |
636 | r->offset = mem; | |
637 | r->size = newsize; | |
638 | } | |
639 | r->offset[r->count++] = offset; | |
640 | } | |
641 | ||
642 | static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel, | |
643 | Elf_Sym *sym, const char *symname)) | |
968de4f0 EB |
644 | { |
645 | int i; | |
646 | /* Walk through the relocations */ | |
908ec7af | 647 | for (i = 0; i < ehdr.e_shnum; i++) { |
968de4f0 | 648 | char *sym_strtab; |
bf11655c | 649 | Elf_Sym *sh_symtab; |
908ec7af | 650 | struct section *sec_applies, *sec_symtab; |
968de4f0 | 651 | int j; |
908ec7af PA |
652 | struct section *sec = &secs[i]; |
653 | ||
bf11655c | 654 | if (sec->shdr.sh_type != SHT_REL_TYPE) { |
968de4f0 EB |
655 | continue; |
656 | } | |
908ec7af PA |
657 | sec_symtab = sec->link; |
658 | sec_applies = &secs[sec->shdr.sh_info]; | |
659 | if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) { | |
968de4f0 EB |
660 | continue; |
661 | } | |
908ec7af | 662 | sh_symtab = sec_symtab->symtab; |
cc65f1ec | 663 | sym_strtab = sec_symtab->link->strtab; |
bf11655c | 664 | for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) { |
5d442e63 KC |
665 | Elf_Rel *rel = &sec->reltab[j]; |
666 | Elf_Sym *sym = &sh_symtab[ELF_R_SYM(rel->r_info)]; | |
667 | const char *symname = sym_name(sym_strtab, sym); | |
24ab82bd | 668 | |
5d442e63 KC |
669 | process(sec, rel, sym, symname); |
670 | } | |
671 | } | |
672 | } | |
673 | ||
946166af KC |
674 | /* |
675 | * The .data..percpu section is a special case for x86_64 SMP kernels. | |
676 | * It is used to initialize the actual per_cpu areas and to provide | |
677 | * definitions for the per_cpu variables that correspond to their offsets | |
678 | * within the percpu area. Since the values of all of the symbols need | |
679 | * to be offsets from the start of the per_cpu area the virtual address | |
680 | * (sh_addr) of .data..percpu is 0 in SMP kernels. | |
681 | * | |
682 | * This means that: | |
683 | * | |
684 | * Relocations that reference symbols in the per_cpu area do not | |
685 | * need further relocation (since the value is an offset relative | |
686 | * to the start of the per_cpu area that does not change). | |
687 | * | |
688 | * Relocations that apply to the per_cpu area need to have their | |
689 | * offset adjusted by by the value of __per_cpu_load to make them | |
690 | * point to the correct place in the loaded image (because the | |
691 | * virtual address of .data..percpu is 0). | |
692 | * | |
693 | * For non SMP kernels .data..percpu is linked as part of the normal | |
694 | * kernel data and does not require special treatment. | |
695 | * | |
696 | */ | |
697 | static int per_cpu_shndx = -1; | |
698 | Elf_Addr per_cpu_load_addr; | |
699 | ||
700 | static void percpu_init(void) | |
701 | { | |
702 | int i; | |
703 | for (i = 0; i < ehdr.e_shnum; i++) { | |
704 | ElfW(Sym) *sym; | |
705 | if (strcmp(sec_name(i), ".data..percpu")) | |
706 | continue; | |
707 | ||
708 | if (secs[i].shdr.sh_addr != 0) /* non SMP kernel */ | |
709 | return; | |
710 | ||
711 | sym = sym_lookup("__per_cpu_load"); | |
712 | if (!sym) | |
713 | die("can't find __per_cpu_load\n"); | |
714 | ||
715 | per_cpu_shndx = i; | |
716 | per_cpu_load_addr = sym->st_value; | |
717 | return; | |
718 | } | |
719 | } | |
720 | ||
c889ba80 PA |
721 | #if ELF_BITS == 64 |
722 | ||
946166af KC |
723 | /* |
724 | * Check to see if a symbol lies in the .data..percpu section. | |
d751c169 MD |
725 | * |
726 | * The linker incorrectly associates some symbols with the | |
727 | * .data..percpu section so we also need to check the symbol | |
728 | * name to make sure that we classify the symbol correctly. | |
729 | * | |
730 | * The GNU linker incorrectly associates: | |
731 | * __init_begin | |
aec58baf | 732 | * __per_cpu_load |
d751c169 MD |
733 | * |
734 | * The "gold" linker incorrectly associates: | |
735 | * init_per_cpu__irq_stack_union | |
736 | * init_per_cpu__gdt_page | |
946166af KC |
737 | */ |
738 | static int is_percpu_sym(ElfW(Sym) *sym, const char *symname) | |
739 | { | |
740 | return (sym->st_shndx == per_cpu_shndx) && | |
d751c169 | 741 | strcmp(symname, "__init_begin") && |
aec58baf | 742 | strcmp(symname, "__per_cpu_load") && |
d751c169 | 743 | strncmp(symname, "init_per_cpu_", 13); |
946166af KC |
744 | } |
745 | ||
c889ba80 | 746 | |
946166af KC |
747 | static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym, |
748 | const char *symname) | |
749 | { | |
750 | unsigned r_type = ELF64_R_TYPE(rel->r_info); | |
751 | ElfW(Addr) offset = rel->r_offset; | |
752 | int shn_abs = (sym->st_shndx == SHN_ABS) && !is_reloc(S_REL, symname); | |
753 | ||
754 | if (sym->st_shndx == SHN_UNDEF) | |
755 | return 0; | |
756 | ||
757 | /* | |
758 | * Adjust the offset if this reloc applies to the percpu section. | |
759 | */ | |
760 | if (sec->shdr.sh_info == per_cpu_shndx) | |
761 | offset += per_cpu_load_addr; | |
762 | ||
763 | switch (r_type) { | |
764 | case R_X86_64_NONE: | |
765 | case R_X86_64_PC32: | |
766 | /* | |
767 | * NONE can be ignored and PC relative relocations don't | |
768 | * need to be adjusted. | |
769 | */ | |
770 | break; | |
771 | ||
772 | case R_X86_64_32: | |
773 | case R_X86_64_32S: | |
774 | case R_X86_64_64: | |
775 | /* | |
776 | * References to the percpu area don't need to be adjusted. | |
777 | */ | |
778 | if (is_percpu_sym(sym, symname)) | |
779 | break; | |
780 | ||
781 | if (shn_abs) { | |
782 | /* | |
783 | * Whitelisted absolute symbols do not require | |
784 | * relocation. | |
785 | */ | |
786 | if (is_reloc(S_ABS, symname)) | |
787 | break; | |
788 | ||
789 | die("Invalid absolute %s relocation: %s\n", | |
790 | rel_type(r_type), symname); | |
791 | break; | |
792 | } | |
793 | ||
794 | /* | |
795 | * Relocation offsets for 64 bit kernels are output | |
796 | * as 32 bits and sign extended back to 64 bits when | |
797 | * the relocations are processed. | |
798 | * Make sure that the offset will fit. | |
799 | */ | |
800 | if ((int32_t)offset != (int64_t)offset) | |
801 | die("Relocation offset doesn't fit in 32 bits\n"); | |
802 | ||
803 | if (r_type == R_X86_64_64) | |
804 | add_reloc(&relocs64, offset); | |
805 | else | |
806 | add_reloc(&relocs32, offset); | |
807 | break; | |
808 | ||
809 | default: | |
810 | die("Unsupported relocation type: %s (%d)\n", | |
811 | rel_type(r_type), r_type); | |
812 | break; | |
813 | } | |
814 | ||
815 | return 0; | |
816 | } | |
817 | ||
c889ba80 | 818 | #else |
946166af KC |
819 | |
820 | static int do_reloc32(struct section *sec, Elf_Rel *rel, Elf_Sym *sym, | |
821 | const char *symname) | |
5d442e63 KC |
822 | { |
823 | unsigned r_type = ELF32_R_TYPE(rel->r_info); | |
824 | int shn_abs = (sym->st_shndx == SHN_ABS) && !is_reloc(S_REL, symname); | |
825 | ||
826 | switch (r_type) { | |
827 | case R_386_NONE: | |
828 | case R_386_PC32: | |
829 | case R_386_PC16: | |
830 | case R_386_PC8: | |
831 | /* | |
832 | * NONE can be ignored and PC relative relocations don't | |
833 | * need to be adjusted. | |
834 | */ | |
835 | break; | |
836 | ||
837 | case R_386_32: | |
838 | if (shn_abs) { | |
839 | /* | |
840 | * Whitelisted absolute symbols do not require | |
841 | * relocation. | |
842 | */ | |
843 | if (is_reloc(S_ABS, symname)) | |
873b5271 | 844 | break; |
6520fe55 | 845 | |
5d442e63 KC |
846 | die("Invalid absolute %s relocation: %s\n", |
847 | rel_type(r_type), symname); | |
848 | break; | |
849 | } | |
850 | ||
851 | add_reloc(&relocs32, rel->r_offset); | |
852 | break; | |
853 | ||
854 | default: | |
855 | die("Unsupported relocation type: %s (%d)\n", | |
856 | rel_type(r_type), r_type); | |
857 | break; | |
858 | } | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
863 | static int do_reloc_real(struct section *sec, Elf_Rel *rel, Elf_Sym *sym, | |
864 | const char *symname) | |
865 | { | |
866 | unsigned r_type = ELF32_R_TYPE(rel->r_info); | |
867 | int shn_abs = (sym->st_shndx == SHN_ABS) && !is_reloc(S_REL, symname); | |
868 | ||
869 | switch (r_type) { | |
870 | case R_386_NONE: | |
871 | case R_386_PC32: | |
872 | case R_386_PC16: | |
873 | case R_386_PC8: | |
874 | /* | |
875 | * NONE can be ignored and PC relative relocations don't | |
876 | * need to be adjusted. | |
877 | */ | |
878 | break; | |
879 | ||
880 | case R_386_16: | |
881 | if (shn_abs) { | |
882 | /* | |
883 | * Whitelisted absolute symbols do not require | |
884 | * relocation. | |
885 | */ | |
886 | if (is_reloc(S_ABS, symname)) | |
6520fe55 PA |
887 | break; |
888 | ||
5d442e63 KC |
889 | if (is_reloc(S_SEG, symname)) { |
890 | add_reloc(&relocs16, rel->r_offset); | |
891 | break; | |
892 | } | |
893 | } else { | |
894 | if (!is_reloc(S_LIN, symname)) | |
873b5271 | 895 | break; |
5d442e63 KC |
896 | } |
897 | die("Invalid %s %s relocation: %s\n", | |
898 | shn_abs ? "absolute" : "relative", | |
899 | rel_type(r_type), symname); | |
900 | break; | |
901 | ||
902 | case R_386_32: | |
903 | if (shn_abs) { | |
904 | /* | |
905 | * Whitelisted absolute symbols do not require | |
906 | * relocation. | |
907 | */ | |
908 | if (is_reloc(S_ABS, symname)) | |
909 | break; | |
910 | ||
911 | if (is_reloc(S_REL, symname)) { | |
912 | add_reloc(&relocs32, rel->r_offset); | |
873b5271 | 913 | break; |
968de4f0 | 914 | } |
5d442e63 KC |
915 | } else { |
916 | if (is_reloc(S_LIN, symname)) | |
917 | add_reloc(&relocs32, rel->r_offset); | |
918 | break; | |
968de4f0 | 919 | } |
5d442e63 KC |
920 | die("Invalid %s %s relocation: %s\n", |
921 | shn_abs ? "absolute" : "relative", | |
922 | rel_type(r_type), symname); | |
923 | break; | |
968de4f0 | 924 | |
5d442e63 KC |
925 | default: |
926 | die("Unsupported relocation type: %s (%d)\n", | |
927 | rel_type(r_type), r_type); | |
928 | break; | |
929 | } | |
968de4f0 | 930 | |
5d442e63 | 931 | return 0; |
968de4f0 EB |
932 | } |
933 | ||
c889ba80 PA |
934 | #endif |
935 | ||
968de4f0 EB |
936 | static int cmp_relocs(const void *va, const void *vb) |
937 | { | |
5d442e63 | 938 | const uint32_t *a, *b; |
968de4f0 EB |
939 | a = va; b = vb; |
940 | return (*a == *b)? 0 : (*a > *b)? 1 : -1; | |
941 | } | |
942 | ||
5d442e63 KC |
943 | static void sort_relocs(struct relocs *r) |
944 | { | |
945 | qsort(r->offset, r->count, sizeof(r->offset[0]), cmp_relocs); | |
946 | } | |
947 | ||
948 | static int write32(uint32_t v, FILE *f) | |
6520fe55 PA |
949 | { |
950 | unsigned char buf[4]; | |
951 | ||
952 | put_unaligned_le32(v, buf); | |
953 | return fwrite(buf, 1, 4, f) == 4 ? 0 : -1; | |
954 | } | |
955 | ||
5d442e63 KC |
956 | static int write32_as_text(uint32_t v, FILE *f) |
957 | { | |
958 | return fprintf(f, "\t.long 0x%08"PRIx32"\n", v) > 0 ? 0 : -1; | |
959 | } | |
960 | ||
6520fe55 | 961 | static void emit_relocs(int as_text, int use_real_mode) |
968de4f0 EB |
962 | { |
963 | int i; | |
5d442e63 | 964 | int (*write_reloc)(uint32_t, FILE *) = write32; |
946166af KC |
965 | int (*do_reloc)(struct section *sec, Elf_Rel *rel, Elf_Sym *sym, |
966 | const char *symname); | |
967 | ||
c889ba80 PA |
968 | #if ELF_BITS == 64 |
969 | if (!use_real_mode) | |
946166af | 970 | do_reloc = do_reloc64; |
c889ba80 PA |
971 | else |
972 | die("--realmode not valid for a 64-bit ELF file"); | |
973 | #else | |
974 | if (!use_real_mode) | |
946166af KC |
975 | do_reloc = do_reloc32; |
976 | else | |
977 | do_reloc = do_reloc_real; | |
c889ba80 | 978 | #endif |
6520fe55 | 979 | |
968de4f0 | 980 | /* Collect up the relocations */ |
946166af | 981 | walk_relocs(do_reloc); |
6520fe55 | 982 | |
5d442e63 | 983 | if (relocs16.count && !use_real_mode) |
6520fe55 | 984 | die("Segment relocations found but --realmode not specified\n"); |
968de4f0 EB |
985 | |
986 | /* Order the relocations for more efficient processing */ | |
5d442e63 KC |
987 | sort_relocs(&relocs16); |
988 | sort_relocs(&relocs32); | |
946166af | 989 | sort_relocs(&relocs64); |
968de4f0 EB |
990 | |
991 | /* Print the relocations */ | |
992 | if (as_text) { | |
993 | /* Print the relocations in a form suitable that | |
994 | * gas will like. | |
995 | */ | |
996 | printf(".section \".data.reloc\",\"a\"\n"); | |
997 | printf(".balign 4\n"); | |
5d442e63 | 998 | write_reloc = write32_as_text; |
968de4f0 | 999 | } |
6520fe55 | 1000 | |
5d442e63 KC |
1001 | if (use_real_mode) { |
1002 | write_reloc(relocs16.count, stdout); | |
1003 | for (i = 0; i < relocs16.count; i++) | |
1004 | write_reloc(relocs16.offset[i], stdout); | |
1005 | ||
1006 | write_reloc(relocs32.count, stdout); | |
1007 | for (i = 0; i < relocs32.count; i++) | |
1008 | write_reloc(relocs32.offset[i], stdout); | |
1009 | } else { | |
c889ba80 | 1010 | if (ELF_BITS == 64) { |
946166af KC |
1011 | /* Print a stop */ |
1012 | write_reloc(0, stdout); | |
1013 | ||
1014 | /* Now print each relocation */ | |
1015 | for (i = 0; i < relocs64.count; i++) | |
1016 | write_reloc(relocs64.offset[i], stdout); | |
1017 | } | |
1018 | ||
5d442e63 KC |
1019 | /* Print a stop */ |
1020 | write_reloc(0, stdout); | |
1021 | ||
1022 | /* Now print each relocation */ | |
1023 | for (i = 0; i < relocs32.count; i++) | |
1024 | write_reloc(relocs32.offset[i], stdout); | |
968de4f0 EB |
1025 | } |
1026 | } | |
1027 | ||
214a8876 MD |
1028 | /* |
1029 | * As an aid to debugging problems with different linkers | |
1030 | * print summary information about the relocs. | |
1031 | * Since different linkers tend to emit the sections in | |
1032 | * different orders we use the section names in the output. | |
1033 | */ | |
1034 | static int do_reloc_info(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym, | |
1035 | const char *symname) | |
1036 | { | |
1037 | printf("%s\t%s\t%s\t%s\n", | |
1038 | sec_name(sec->shdr.sh_info), | |
1039 | rel_type(ELF_R_TYPE(rel->r_info)), | |
1040 | symname, | |
1041 | sec_name(sym->st_shndx)); | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | static void print_reloc_info(void) | |
1046 | { | |
1047 | printf("reloc section\treloc type\tsymbol\tsymbol section\n"); | |
1048 | walk_relocs(do_reloc_info); | |
1049 | } | |
1050 | ||
c889ba80 PA |
1051 | #if ELF_BITS == 64 |
1052 | # define process process_64 | |
1053 | #else | |
1054 | # define process process_32 | |
1055 | #endif | |
968de4f0 | 1056 | |
c889ba80 | 1057 | void process(FILE *fp, int use_real_mode, int as_text, |
214a8876 MD |
1058 | int show_absolute_syms, int show_absolute_relocs, |
1059 | int show_reloc_info) | |
968de4f0 | 1060 | { |
6520fe55 | 1061 | regex_init(use_real_mode); |
968de4f0 EB |
1062 | read_ehdr(fp); |
1063 | read_shdrs(fp); | |
1064 | read_strtabs(fp); | |
1065 | read_symtabs(fp); | |
1066 | read_relocs(fp); | |
c889ba80 | 1067 | if (ELF_BITS == 64) |
946166af | 1068 | percpu_init(); |
6a044b3a | 1069 | if (show_absolute_syms) { |
968de4f0 | 1070 | print_absolute_symbols(); |
c889ba80 | 1071 | return; |
6a044b3a VG |
1072 | } |
1073 | if (show_absolute_relocs) { | |
968de4f0 | 1074 | print_absolute_relocs(); |
c889ba80 | 1075 | return; |
968de4f0 | 1076 | } |
214a8876 MD |
1077 | if (show_reloc_info) { |
1078 | print_reloc_info(); | |
1079 | return; | |
1080 | } | |
6520fe55 | 1081 | emit_relocs(as_text, use_real_mode); |
968de4f0 | 1082 | } |