fb7117a4ade1e259c69d45b47d4ffc3b62196540
[linux-2.6.git] / arch / x86 / boot / compressed / relocs.c
1 #include <stdio.h>
2 #include <stdarg.h>
3 #include <stdlib.h>
4 #include <stdint.h>
5 #include <string.h>
6 #include <errno.h>
7 #include <unistd.h>
8 #include <elf.h>
9 #include <byteswap.h>
10 #define USE_BSD
11 #include <endian.h>
12 #include <regex.h>
13 #include <tools/le_byteshift.h>
14
15 static void die(char *fmt, ...);
16
17 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
18 static Elf32_Ehdr ehdr;
19 static unsigned long reloc_count, reloc_idx;
20 static unsigned long *relocs;
21
22 struct section {
23         Elf32_Shdr     shdr;
24         struct section *link;
25         Elf32_Sym      *symtab;
26         Elf32_Rel      *reltab;
27         char           *strtab;
28 };
29 static struct section *secs;
30
31 /*
32  * Following symbols have been audited. There values are constant and do
33  * not change if bzImage is loaded at a different physical address than
34  * the address for which it has been compiled. Don't warn user about
35  * absolute relocations present w.r.t these symbols.
36  */
37 static const char abs_sym_regex[] =
38         "^(xen_irq_disable_direct_reloc$|"
39         "xen_save_fl_direct_reloc$|"
40         "VDSO|"
41         "__crc_)";
42 static regex_t abs_sym_regex_c;
43 static int is_abs_reloc(const char *sym_name)
44 {
45         return !regexec(&abs_sym_regex_c, sym_name, 0, NULL, 0);
46 }
47
48 /*
49  * These symbols are known to be relative, even if the linker marks them
50  * as absolute (typically defined outside any section in the linker script.)
51  */
52 static const char rel_sym_regex[] =
53         "^_end$";
54 static regex_t rel_sym_regex_c;
55 static int is_rel_reloc(const char *sym_name)
56 {
57         return !regexec(&rel_sym_regex_c, sym_name, 0, NULL, 0);
58 }
59
60 static void regex_init(void)
61 {
62         char errbuf[128];
63         int err;
64         
65         err = regcomp(&abs_sym_regex_c, abs_sym_regex,
66                       REG_EXTENDED|REG_NOSUB);
67         if (err) {
68                 regerror(err, &abs_sym_regex_c, errbuf, sizeof errbuf);
69                 die("%s", errbuf);
70         }
71
72         err = regcomp(&rel_sym_regex_c, rel_sym_regex,
73                       REG_EXTENDED|REG_NOSUB);
74         if (err) {
75                 regerror(err, &rel_sym_regex_c, errbuf, sizeof errbuf);
76                 die("%s", errbuf);
77         }
78 }
79
80 static void die(char *fmt, ...)
81 {
82         va_list ap;
83         va_start(ap, fmt);
84         vfprintf(stderr, fmt, ap);
85         va_end(ap);
86         exit(1);
87 }
88
89 static const char *sym_type(unsigned type)
90 {
91         static const char *type_name[] = {
92 #define SYM_TYPE(X) [X] = #X
93                 SYM_TYPE(STT_NOTYPE),
94                 SYM_TYPE(STT_OBJECT),
95                 SYM_TYPE(STT_FUNC),
96                 SYM_TYPE(STT_SECTION),
97                 SYM_TYPE(STT_FILE),
98                 SYM_TYPE(STT_COMMON),
99                 SYM_TYPE(STT_TLS),
100 #undef SYM_TYPE
101         };
102         const char *name = "unknown sym type name";
103         if (type < ARRAY_SIZE(type_name)) {
104                 name = type_name[type];
105         }
106         return name;
107 }
108
109 static const char *sym_bind(unsigned bind)
110 {
111         static const char *bind_name[] = {
112 #define SYM_BIND(X) [X] = #X
113                 SYM_BIND(STB_LOCAL),
114                 SYM_BIND(STB_GLOBAL),
115                 SYM_BIND(STB_WEAK),
116 #undef SYM_BIND
117         };
118         const char *name = "unknown sym bind name";
119         if (bind < ARRAY_SIZE(bind_name)) {
120                 name = bind_name[bind];
121         }
122         return name;
123 }
124
125 static const char *sym_visibility(unsigned visibility)
126 {
127         static const char *visibility_name[] = {
128 #define SYM_VISIBILITY(X) [X] = #X
129                 SYM_VISIBILITY(STV_DEFAULT),
130                 SYM_VISIBILITY(STV_INTERNAL),
131                 SYM_VISIBILITY(STV_HIDDEN),
132                 SYM_VISIBILITY(STV_PROTECTED),
133 #undef SYM_VISIBILITY
134         };
135         const char *name = "unknown sym visibility name";
136         if (visibility < ARRAY_SIZE(visibility_name)) {
137                 name = visibility_name[visibility];
138         }
139         return name;
140 }
141
142 static const char *rel_type(unsigned type)
143 {
144         static const char *type_name[] = {
145 #define REL_TYPE(X) [X] = #X
146                 REL_TYPE(R_386_NONE),
147                 REL_TYPE(R_386_32),
148                 REL_TYPE(R_386_PC32),
149                 REL_TYPE(R_386_GOT32),
150                 REL_TYPE(R_386_PLT32),
151                 REL_TYPE(R_386_COPY),
152                 REL_TYPE(R_386_GLOB_DAT),
153                 REL_TYPE(R_386_JMP_SLOT),
154                 REL_TYPE(R_386_RELATIVE),
155                 REL_TYPE(R_386_GOTOFF),
156                 REL_TYPE(R_386_GOTPC),
157 #undef REL_TYPE
158         };
159         const char *name = "unknown type rel type name";
160         if (type < ARRAY_SIZE(type_name) && type_name[type]) {
161                 name = type_name[type];
162         }
163         return name;
164 }
165
166 static const char *sec_name(unsigned shndx)
167 {
168         const char *sec_strtab;
169         const char *name;
170         sec_strtab = secs[ehdr.e_shstrndx].strtab;
171         name = "<noname>";
172         if (shndx < ehdr.e_shnum) {
173                 name = sec_strtab + secs[shndx].shdr.sh_name;
174         }
175         else if (shndx == SHN_ABS) {
176                 name = "ABSOLUTE";
177         }
178         else if (shndx == SHN_COMMON) {
179                 name = "COMMON";
180         }
181         return name;
182 }
183
184 static const char *sym_name(const char *sym_strtab, Elf32_Sym *sym)
185 {
186         const char *name;
187         name = "<noname>";
188         if (sym->st_name) {
189                 name = sym_strtab + sym->st_name;
190         }
191         else {
192                 name = sec_name(secs[sym->st_shndx].shdr.sh_name);
193         }
194         return name;
195 }
196
197
198
199 #if BYTE_ORDER == LITTLE_ENDIAN
200 #define le16_to_cpu(val) (val)
201 #define le32_to_cpu(val) (val)
202 #endif
203 #if BYTE_ORDER == BIG_ENDIAN
204 #define le16_to_cpu(val) bswap_16(val)
205 #define le32_to_cpu(val) bswap_32(val)
206 #endif
207
208 static uint16_t elf16_to_cpu(uint16_t val)
209 {
210         return le16_to_cpu(val);
211 }
212
213 static uint32_t elf32_to_cpu(uint32_t val)
214 {
215         return le32_to_cpu(val);
216 }
217
218 static void read_ehdr(FILE *fp)
219 {
220         if (fread(&ehdr, sizeof(ehdr), 1, fp) != 1) {
221                 die("Cannot read ELF header: %s\n",
222                         strerror(errno));
223         }
224         if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) {
225                 die("No ELF magic\n");
226         }
227         if (ehdr.e_ident[EI_CLASS] != ELFCLASS32) {
228                 die("Not a 32 bit executable\n");
229         }
230         if (ehdr.e_ident[EI_DATA] != ELFDATA2LSB) {
231                 die("Not a LSB ELF executable\n");
232         }
233         if (ehdr.e_ident[EI_VERSION] != EV_CURRENT) {
234                 die("Unknown ELF version\n");
235         }
236         /* Convert the fields to native endian */
237         ehdr.e_type      = elf16_to_cpu(ehdr.e_type);
238         ehdr.e_machine   = elf16_to_cpu(ehdr.e_machine);
239         ehdr.e_version   = elf32_to_cpu(ehdr.e_version);
240         ehdr.e_entry     = elf32_to_cpu(ehdr.e_entry);
241         ehdr.e_phoff     = elf32_to_cpu(ehdr.e_phoff);
242         ehdr.e_shoff     = elf32_to_cpu(ehdr.e_shoff);
243         ehdr.e_flags     = elf32_to_cpu(ehdr.e_flags);
244         ehdr.e_ehsize    = elf16_to_cpu(ehdr.e_ehsize);
245         ehdr.e_phentsize = elf16_to_cpu(ehdr.e_phentsize);
246         ehdr.e_phnum     = elf16_to_cpu(ehdr.e_phnum);
247         ehdr.e_shentsize = elf16_to_cpu(ehdr.e_shentsize);
248         ehdr.e_shnum     = elf16_to_cpu(ehdr.e_shnum);
249         ehdr.e_shstrndx  = elf16_to_cpu(ehdr.e_shstrndx);
250
251         if ((ehdr.e_type != ET_EXEC) && (ehdr.e_type != ET_DYN)) {
252                 die("Unsupported ELF header type\n");
253         }
254         if (ehdr.e_machine != EM_386) {
255                 die("Not for x86\n");
256         }
257         if (ehdr.e_version != EV_CURRENT) {
258                 die("Unknown ELF version\n");
259         }
260         if (ehdr.e_ehsize != sizeof(Elf32_Ehdr)) {
261                 die("Bad Elf header size\n");
262         }
263         if (ehdr.e_phentsize != sizeof(Elf32_Phdr)) {
264                 die("Bad program header entry\n");
265         }
266         if (ehdr.e_shentsize != sizeof(Elf32_Shdr)) {
267                 die("Bad section header entry\n");
268         }
269         if (ehdr.e_shstrndx >= ehdr.e_shnum) {
270                 die("String table index out of bounds\n");
271         }
272 }
273
274 static void read_shdrs(FILE *fp)
275 {
276         int i;
277         Elf32_Shdr shdr;
278
279         secs = calloc(ehdr.e_shnum, sizeof(struct section));
280         if (!secs) {
281                 die("Unable to allocate %d section headers\n",
282                     ehdr.e_shnum);
283         }
284         if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0) {
285                 die("Seek to %d failed: %s\n",
286                         ehdr.e_shoff, strerror(errno));
287         }
288         for (i = 0; i < ehdr.e_shnum; i++) {
289                 struct section *sec = &secs[i];
290                 if (fread(&shdr, sizeof shdr, 1, fp) != 1)
291                         die("Cannot read ELF section headers %d/%d: %s\n",
292                             i, ehdr.e_shnum, strerror(errno));
293                 sec->shdr.sh_name      = elf32_to_cpu(shdr.sh_name);
294                 sec->shdr.sh_type      = elf32_to_cpu(shdr.sh_type);
295                 sec->shdr.sh_flags     = elf32_to_cpu(shdr.sh_flags);
296                 sec->shdr.sh_addr      = elf32_to_cpu(shdr.sh_addr);
297                 sec->shdr.sh_offset    = elf32_to_cpu(shdr.sh_offset);
298                 sec->shdr.sh_size      = elf32_to_cpu(shdr.sh_size);
299                 sec->shdr.sh_link      = elf32_to_cpu(shdr.sh_link);
300                 sec->shdr.sh_info      = elf32_to_cpu(shdr.sh_info);
301                 sec->shdr.sh_addralign = elf32_to_cpu(shdr.sh_addralign);
302                 sec->shdr.sh_entsize   = elf32_to_cpu(shdr.sh_entsize);
303                 if (sec->shdr.sh_link < ehdr.e_shnum)
304                         sec->link = &secs[sec->shdr.sh_link];
305         }
306
307 }
308
309 static void read_strtabs(FILE *fp)
310 {
311         int i;
312         for (i = 0; i < ehdr.e_shnum; i++) {
313                 struct section *sec = &secs[i];
314                 if (sec->shdr.sh_type != SHT_STRTAB) {
315                         continue;
316                 }
317                 sec->strtab = malloc(sec->shdr.sh_size);
318                 if (!sec->strtab) {
319                         die("malloc of %d bytes for strtab failed\n",
320                                 sec->shdr.sh_size);
321                 }
322                 if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
323                         die("Seek to %d failed: %s\n",
324                                 sec->shdr.sh_offset, strerror(errno));
325                 }
326                 if (fread(sec->strtab, 1, sec->shdr.sh_size, fp)
327                     != sec->shdr.sh_size) {
328                         die("Cannot read symbol table: %s\n",
329                                 strerror(errno));
330                 }
331         }
332 }
333
334 static void read_symtabs(FILE *fp)
335 {
336         int i,j;
337         for (i = 0; i < ehdr.e_shnum; i++) {
338                 struct section *sec = &secs[i];
339                 if (sec->shdr.sh_type != SHT_SYMTAB) {
340                         continue;
341                 }
342                 sec->symtab = malloc(sec->shdr.sh_size);
343                 if (!sec->symtab) {
344                         die("malloc of %d bytes for symtab failed\n",
345                                 sec->shdr.sh_size);
346                 }
347                 if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
348                         die("Seek to %d failed: %s\n",
349                                 sec->shdr.sh_offset, strerror(errno));
350                 }
351                 if (fread(sec->symtab, 1, sec->shdr.sh_size, fp)
352                     != sec->shdr.sh_size) {
353                         die("Cannot read symbol table: %s\n",
354                                 strerror(errno));
355                 }
356                 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Sym); j++) {
357                         Elf32_Sym *sym = &sec->symtab[j];
358                         sym->st_name  = elf32_to_cpu(sym->st_name);
359                         sym->st_value = elf32_to_cpu(sym->st_value);
360                         sym->st_size  = elf32_to_cpu(sym->st_size);
361                         sym->st_shndx = elf16_to_cpu(sym->st_shndx);
362                 }
363         }
364 }
365
366
367 static void read_relocs(FILE *fp)
368 {
369         int i,j;
370         for (i = 0; i < ehdr.e_shnum; i++) {
371                 struct section *sec = &secs[i];
372                 if (sec->shdr.sh_type != SHT_REL) {
373                         continue;
374                 }
375                 sec->reltab = malloc(sec->shdr.sh_size);
376                 if (!sec->reltab) {
377                         die("malloc of %d bytes for relocs failed\n",
378                                 sec->shdr.sh_size);
379                 }
380                 if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0) {
381                         die("Seek to %d failed: %s\n",
382                                 sec->shdr.sh_offset, strerror(errno));
383                 }
384                 if (fread(sec->reltab, 1, sec->shdr.sh_size, fp)
385                     != sec->shdr.sh_size) {
386                         die("Cannot read symbol table: %s\n",
387                                 strerror(errno));
388                 }
389                 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) {
390                         Elf32_Rel *rel = &sec->reltab[j];
391                         rel->r_offset = elf32_to_cpu(rel->r_offset);
392                         rel->r_info   = elf32_to_cpu(rel->r_info);
393                 }
394         }
395 }
396
397
398 static void print_absolute_symbols(void)
399 {
400         int i;
401         printf("Absolute symbols\n");
402         printf(" Num:    Value Size  Type       Bind        Visibility  Name\n");
403         for (i = 0; i < ehdr.e_shnum; i++) {
404                 struct section *sec = &secs[i];
405                 char *sym_strtab;
406                 int j;
407
408                 if (sec->shdr.sh_type != SHT_SYMTAB) {
409                         continue;
410                 }
411                 sym_strtab = sec->link->strtab;
412                 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Sym); j++) {
413                         Elf32_Sym *sym;
414                         const char *name;
415                         sym = &sec->symtab[j];
416                         name = sym_name(sym_strtab, sym);
417                         if (sym->st_shndx != SHN_ABS) {
418                                 continue;
419                         }
420                         printf("%5d %08x %5d %10s %10s %12s %s\n",
421                                 j, sym->st_value, sym->st_size,
422                                 sym_type(ELF32_ST_TYPE(sym->st_info)),
423                                 sym_bind(ELF32_ST_BIND(sym->st_info)),
424                                 sym_visibility(ELF32_ST_VISIBILITY(sym->st_other)),
425                                 name);
426                 }
427         }
428         printf("\n");
429 }
430
431 static void print_absolute_relocs(void)
432 {
433         int i, printed = 0;
434
435         for (i = 0; i < ehdr.e_shnum; i++) {
436                 struct section *sec = &secs[i];
437                 struct section *sec_applies, *sec_symtab;
438                 char *sym_strtab;
439                 Elf32_Sym *sh_symtab;
440                 int j;
441                 if (sec->shdr.sh_type != SHT_REL) {
442                         continue;
443                 }
444                 sec_symtab  = sec->link;
445                 sec_applies = &secs[sec->shdr.sh_info];
446                 if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) {
447                         continue;
448                 }
449                 sh_symtab  = sec_symtab->symtab;
450                 sym_strtab = sec_symtab->link->strtab;
451                 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) {
452                         Elf32_Rel *rel;
453                         Elf32_Sym *sym;
454                         const char *name;
455                         rel = &sec->reltab[j];
456                         sym = &sh_symtab[ELF32_R_SYM(rel->r_info)];
457                         name = sym_name(sym_strtab, sym);
458                         if (sym->st_shndx != SHN_ABS) {
459                                 continue;
460                         }
461
462                         /* Absolute symbols are not relocated if bzImage is
463                          * loaded at a non-compiled address. Display a warning
464                          * to user at compile time about the absolute
465                          * relocations present.
466                          *
467                          * User need to audit the code to make sure
468                          * some symbols which should have been section
469                          * relative have not become absolute because of some
470                          * linker optimization or wrong programming usage.
471                          *
472                          * Before warning check if this absolute symbol
473                          * relocation is harmless.
474                          */
475                         if (is_abs_reloc(name) || is_rel_reloc(name))
476                                 continue;
477
478                         if (!printed) {
479                                 printf("WARNING: Absolute relocations"
480                                         " present\n");
481                                 printf("Offset     Info     Type     Sym.Value "
482                                         "Sym.Name\n");
483                                 printed = 1;
484                         }
485
486                         printf("%08x %08x %10s %08x  %s\n",
487                                 rel->r_offset,
488                                 rel->r_info,
489                                 rel_type(ELF32_R_TYPE(rel->r_info)),
490                                 sym->st_value,
491                                 name);
492                 }
493         }
494
495         if (printed)
496                 printf("\n");
497 }
498
499 static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym))
500 {
501         int i;
502         /* Walk through the relocations */
503         for (i = 0; i < ehdr.e_shnum; i++) {
504                 char *sym_strtab;
505                 Elf32_Sym *sh_symtab;
506                 struct section *sec_applies, *sec_symtab;
507                 int j;
508                 struct section *sec = &secs[i];
509
510                 if (sec->shdr.sh_type != SHT_REL) {
511                         continue;
512                 }
513                 sec_symtab  = sec->link;
514                 sec_applies = &secs[sec->shdr.sh_info];
515                 if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) {
516                         continue;
517                 }
518                 sh_symtab = sec_symtab->symtab;
519                 sym_strtab = sec_symtab->link->strtab;
520                 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) {
521                         Elf32_Rel *rel;
522                         Elf32_Sym *sym;
523                         unsigned r_type;
524                         rel = &sec->reltab[j];
525                         sym = &sh_symtab[ELF32_R_SYM(rel->r_info)];
526                         r_type = ELF32_R_TYPE(rel->r_info);
527                         /* Don't visit relocations to absolute symbols */
528                         if (sym->st_shndx == SHN_ABS &&
529                             !is_rel_reloc(sym_name(sym_strtab, sym))) {
530                                 continue;
531                         }
532                         switch (r_type) {
533                         case R_386_NONE:
534                         case R_386_PC32:
535                                 /*
536                                  * NONE can be ignored and and PC relative
537                                  * relocations don't need to be adjusted.
538                                  */
539                                 break;
540                         case R_386_32:
541                                 /* Visit relocations that need to be adjusted */
542                                 visit(rel, sym);
543                                 break;
544                         default:
545                                 die("Unsupported relocation type: %s (%d)\n",
546                                     rel_type(r_type), r_type);
547                                 break;
548                         }
549                 }
550         }
551 }
552
553 static void count_reloc(Elf32_Rel *rel, Elf32_Sym *sym)
554 {
555         reloc_count += 1;
556 }
557
558 static void collect_reloc(Elf32_Rel *rel, Elf32_Sym *sym)
559 {
560         /* Remember the address that needs to be adjusted. */
561         relocs[reloc_idx++] = rel->r_offset;
562 }
563
564 static int cmp_relocs(const void *va, const void *vb)
565 {
566         const unsigned long *a, *b;
567         a = va; b = vb;
568         return (*a == *b)? 0 : (*a > *b)? 1 : -1;
569 }
570
571 static void emit_relocs(int as_text)
572 {
573         int i;
574         /* Count how many relocations I have and allocate space for them. */
575         reloc_count = 0;
576         walk_relocs(count_reloc);
577         relocs = malloc(reloc_count * sizeof(relocs[0]));
578         if (!relocs) {
579                 die("malloc of %d entries for relocs failed\n",
580                         reloc_count);
581         }
582         /* Collect up the relocations */
583         reloc_idx = 0;
584         walk_relocs(collect_reloc);
585
586         /* Order the relocations for more efficient processing */
587         qsort(relocs, reloc_count, sizeof(relocs[0]), cmp_relocs);
588
589         /* Print the relocations */
590         if (as_text) {
591                 /* Print the relocations in a form suitable that
592                  * gas will like.
593                  */
594                 printf(".section \".data.reloc\",\"a\"\n");
595                 printf(".balign 4\n");
596                 for (i = 0; i < reloc_count; i++) {
597                         printf("\t .long 0x%08lx\n", relocs[i]);
598                 }
599                 printf("\n");
600         }
601         else {
602                 unsigned char buf[4];
603                 /* Print a stop */
604                 fwrite("\0\0\0\0", 4, 1, stdout);
605                 /* Now print each relocation */
606                 for (i = 0; i < reloc_count; i++) {
607                         put_unaligned_le32(relocs[i], buf);
608                         fwrite(buf, 4, 1, stdout);
609                 }
610         }
611 }
612
613 static void usage(void)
614 {
615         die("relocs [--abs-syms |--abs-relocs | --text] vmlinux\n");
616 }
617
618 int main(int argc, char **argv)
619 {
620         int show_absolute_syms, show_absolute_relocs;
621         int as_text;
622         const char *fname;
623         FILE *fp;
624         int i;
625
626         regex_init();
627
628         show_absolute_syms = 0;
629         show_absolute_relocs = 0;
630         as_text = 0;
631         fname = NULL;
632         for (i = 1; i < argc; i++) {
633                 char *arg = argv[i];
634                 if (*arg == '-') {
635                         if (strcmp(argv[1], "--abs-syms") == 0) {
636                                 show_absolute_syms = 1;
637                                 continue;
638                         }
639
640                         if (strcmp(argv[1], "--abs-relocs") == 0) {
641                                 show_absolute_relocs = 1;
642                                 continue;
643                         }
644                         else if (strcmp(argv[1], "--text") == 0) {
645                                 as_text = 1;
646                                 continue;
647                         }
648                 }
649                 else if (!fname) {
650                         fname = arg;
651                         continue;
652                 }
653                 usage();
654         }
655         if (!fname) {
656                 usage();
657         }
658         fp = fopen(fname, "r");
659         if (!fp) {
660                 die("Cannot open %s: %s\n",
661                         fname, strerror(errno));
662         }
663         read_ehdr(fp);
664         read_shdrs(fp);
665         read_strtabs(fp);
666         read_symtabs(fp);
667         read_relocs(fp);
668         if (show_absolute_syms) {
669                 print_absolute_symbols();
670                 return 0;
671         }
672         if (show_absolute_relocs) {
673                 print_absolute_relocs();
674                 return 0;
675         }
676         emit_relocs(as_text);
677         return 0;
678 }