Regenerate translation files.
[binutils.git] / bfd / aout-arm.c
bloba533cd63073c86ebb4b30617fd7cc29dde538268
1 /* BFD back-end for raw ARM a.out binaries.
2 Copyright 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005,
3 2007 Free Software Foundation, Inc.
4 Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
22 #include "sysdep.h"
23 #include "bfd.h"
25 /* Avoid multiple definitions from aoutx if supporting standard a.out
26 as well as our own. */
27 /* Do not "beautify" the CONCAT* macro args. Traditional C will not
28 remove whitespace added here, and thus will fail to concatenate
29 the tokens. */
30 #define NAME(x,y) CONCAT3 (aoutarm,_32_,y)
32 #define N_TXTADDR(x) \
33 ((N_MAGIC (x) == NMAGIC) \
34 ? (bfd_vma) 0x8000 \
35 : ((N_MAGIC (x) != ZMAGIC) \
36 ? (bfd_vma) 0 \
37 : ((N_SHARED_LIB (x)) \
38 ? ((x).a_entry & ~(bfd_vma) (TARGET_PAGE_SIZE - 1)) \
39 : (bfd_vma) TEXT_START_ADDR)))
41 #define TEXT_START_ADDR 0x8000
42 #define TARGET_PAGE_SIZE 0x8000
43 #define SEGMENT_SIZE TARGET_PAGE_SIZE
44 #define DEFAULT_ARCH bfd_arch_arm
46 #define MY(OP) CONCAT2 (aoutarm_,OP)
47 #define N_BADMAG(x) ((((x).a_info & ~007200) != ZMAGIC) && \
48 (((x).a_info & ~006000) != OMAGIC) && \
49 ((x).a_info != NMAGIC))
50 #define N_MAGIC(x) ((x).a_info & ~07200)
52 #define MY_bfd_reloc_type_lookup aoutarm_bfd_reloc_type_lookup
53 #define MY_bfd_reloc_name_lookup aoutarm_bfd_reloc_name_lookup
55 #include "libaout.h"
56 #include "aout/aout64.h"
59 static bfd_reloc_status_type
60 MY (fix_pcrel_26) (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
61 static bfd_reloc_status_type
62 MY (fix_pcrel_26_done) (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
64 reloc_howto_type MY (howto_table)[] =
66 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl
67 readmask setmask pcdone. */
68 HOWTO (0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", TRUE,
69 0x000000ff, 0x000000ff, FALSE),
70 HOWTO (1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", TRUE,
71 0x0000ffff, 0x0000ffff, FALSE),
72 HOWTO (2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", TRUE,
73 0xffffffff, 0xffffffff, FALSE),
74 HOWTO (3, 2, 2, 26, TRUE, 0, complain_overflow_signed, MY (fix_pcrel_26),
75 "ARM26", TRUE, 0x00ffffff, 0x00ffffff, TRUE),
76 HOWTO (4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", TRUE,
77 0x000000ff, 0x000000ff, TRUE),
78 HOWTO (5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", TRUE,
79 0x0000ffff, 0x0000ffff, TRUE),
80 HOWTO (6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", TRUE,
81 0xffffffff, 0xffffffff, TRUE),
82 HOWTO (7, 2, 2, 26, FALSE, 0, complain_overflow_signed,
83 MY (fix_pcrel_26_done), "ARM26D", TRUE, 0x0, 0x0,
84 FALSE),
85 EMPTY_HOWTO (-1),
86 HOWTO (9, 0, -1, 16, FALSE, 0, complain_overflow_bitfield, 0, "NEG16", TRUE,
87 0x0000ffff, 0x0000ffff, FALSE),
88 HOWTO (10, 0, -2, 32, FALSE, 0, complain_overflow_bitfield, 0, "NEG32", TRUE,
89 0xffffffff, 0xffffffff, FALSE)
92 #define RELOC_ARM_BITS_NEG_BIG ((unsigned int) 0x08)
93 #define RELOC_ARM_BITS_NEG_LITTLE ((unsigned int) 0x10)
95 static reloc_howto_type *
96 MY (reloc_howto) (bfd *abfd,
97 struct reloc_std_external *rel,
98 int *r_index,
99 int *r_extern,
100 int *r_pcrel)
102 unsigned int r_length;
103 unsigned int r_pcrel_done;
104 unsigned int r_neg;
105 int index;
107 *r_pcrel = 0;
108 if (bfd_header_big_endian (abfd))
110 *r_index = ((rel->r_index[0] << 16)
111 | (rel->r_index[1] << 8)
112 | rel->r_index[2]);
113 *r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
114 r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
115 r_neg = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_BIG));
116 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
117 >> RELOC_STD_BITS_LENGTH_SH_BIG);
119 else
121 *r_index = ((rel->r_index[2] << 16)
122 | (rel->r_index[1] << 8)
123 | rel->r_index[0]);
124 *r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
125 r_pcrel_done = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
126 r_neg = (0 != (rel->r_type[0] & RELOC_ARM_BITS_NEG_LITTLE));
127 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
128 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
130 index = r_length + 4 * r_pcrel_done + 8 * r_neg;
131 if (index == 3)
132 *r_pcrel = 1;
134 return MY (howto_table) + index;
137 #define MY_reloc_howto(BFD, REL, IN, EX, PC) \
138 MY (reloc_howto) (BFD, REL, &IN, &EX, &PC)
140 static void
141 MY (put_reloc) (bfd *abfd,
142 int r_extern,
143 int r_index,
144 bfd_vma value,
145 reloc_howto_type *howto,
146 struct reloc_std_external *reloc)
148 unsigned int r_length;
149 int r_pcrel;
150 int r_neg;
152 PUT_WORD (abfd, value, reloc->r_address);
153 /* Size as a power of two. */
154 r_length = howto->size;
156 /* Special case for branch relocations. */
157 if (howto->type == 3 || howto->type == 7)
158 r_length = 3;
160 r_pcrel = howto->type & 4; /* PC Relative done? */
161 r_neg = howto->type & 8; /* Negative relocation. */
163 if (bfd_header_big_endian (abfd))
165 reloc->r_index[0] = r_index >> 16;
166 reloc->r_index[1] = r_index >> 8;
167 reloc->r_index[2] = r_index;
168 reloc->r_type[0] =
169 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
170 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
171 | (r_neg ? RELOC_ARM_BITS_NEG_BIG : 0)
172 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
174 else
176 reloc->r_index[2] = r_index >> 16;
177 reloc->r_index[1] = r_index >> 8;
178 reloc->r_index[0] = r_index;
179 reloc->r_type[0] =
180 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
181 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
182 | (r_neg ? RELOC_ARM_BITS_NEG_LITTLE : 0)
183 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
187 #define MY_put_reloc(BFD, EXT, IDX, VAL, HOWTO, RELOC) \
188 MY (put_reloc) (BFD, EXT, IDX, VAL, HOWTO, RELOC)
190 static void
191 MY (relocatable_reloc) (reloc_howto_type *howto,
192 bfd *abfd,
193 struct reloc_std_external *reloc,
194 bfd_vma *amount,
195 bfd_vma r_addr)
197 if (howto->type == 3)
199 if (reloc->r_type[0]
200 & (bfd_header_big_endian (abfd)
201 ? RELOC_STD_BITS_EXTERN_BIG : RELOC_STD_BITS_EXTERN_LITTLE))
202 /* The reloc is still external, so don't modify anything. */
203 *amount = 0;
204 else
206 *amount -= r_addr;
207 /* Change the r_pcrel value -- on the ARM, this bit is set once the
208 relocation is done. */
209 if (bfd_header_big_endian (abfd))
210 reloc->r_type[0] |= RELOC_STD_BITS_PCREL_BIG;
211 else
212 reloc->r_type[0] |= RELOC_STD_BITS_PCREL_LITTLE;
215 else if (howto->type == 7)
216 *amount = 0;
219 #define MY_relocatable_reloc(HOW, BFD, REL, AMOUNT, ADDR) \
220 MY (relocatable_reloc) (HOW, BFD, REL, &(AMOUNT), ADDR)
222 static bfd_reloc_status_type
223 MY (fix_pcrel_26_done) (bfd *abfd ATTRIBUTE_UNUSED,
224 arelent *reloc_entry ATTRIBUTE_UNUSED,
225 asymbol *symbol ATTRIBUTE_UNUSED,
226 void * data ATTRIBUTE_UNUSED,
227 asection *input_section ATTRIBUTE_UNUSED,
228 bfd *output_bfd ATTRIBUTE_UNUSED,
229 char **error_message ATTRIBUTE_UNUSED)
231 /* This is dead simple at present. */
232 return bfd_reloc_ok;
235 static bfd_reloc_status_type
236 MY (fix_pcrel_26) (bfd *abfd,
237 arelent *reloc_entry,
238 asymbol *symbol,
239 void * data,
240 asection *input_section,
241 bfd *output_bfd,
242 char **error_message ATTRIBUTE_UNUSED)
244 bfd_vma relocation;
245 bfd_size_type addr = reloc_entry->address;
246 bfd_vma target = bfd_get_32 (abfd, (bfd_byte *) data + addr);
247 bfd_reloc_status_type flag = bfd_reloc_ok;
249 /* If this is an undefined symbol, return error. */
250 if (symbol->section == &bfd_und_section
251 && (symbol->flags & BSF_WEAK) == 0)
252 return output_bfd ? bfd_reloc_ok : bfd_reloc_undefined;
254 /* If the sections are different, and we are doing a partial relocation,
255 just ignore it for now. */
256 if (symbol->section->name != input_section->name
257 && output_bfd != NULL)
258 return bfd_reloc_ok;
260 relocation = (target & 0x00ffffff) << 2;
261 relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend. */
262 relocation += symbol->value;
263 relocation += symbol->section->output_section->vma;
264 relocation += symbol->section->output_offset;
265 relocation += reloc_entry->addend;
266 relocation -= input_section->output_section->vma;
267 relocation -= input_section->output_offset;
268 relocation -= addr;
269 if (relocation & 3)
270 return bfd_reloc_overflow;
272 /* Check for overflow. */
273 if (relocation & 0x02000000)
275 if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff)
276 flag = bfd_reloc_overflow;
278 else if (relocation & ~ (bfd_vma) 0x03ffffff)
279 flag = bfd_reloc_overflow;
281 target &= ~ (bfd_vma) 0x00ffffff;
282 target |= (relocation >> 2) & 0x00ffffff;
283 bfd_put_32 (abfd, target, (bfd_byte *) data + addr);
285 /* Now the ARM magic... Change the reloc type so that it is marked as done.
286 Strictly this is only necessary if we are doing a partial relocation. */
287 reloc_entry->howto = &MY (howto_table)[7];
289 return flag;
292 static reloc_howto_type *
293 MY (bfd_reloc_type_lookup) (bfd *abfd,
294 bfd_reloc_code_real_type code)
296 #define ASTD(i,j) case i: return & MY (howto_table)[j]
298 if (code == BFD_RELOC_CTOR)
299 switch (bfd_get_arch_info (abfd)->bits_per_address)
301 case 32:
302 code = BFD_RELOC_32;
303 break;
304 default:
305 return NULL;
308 switch (code)
310 ASTD (BFD_RELOC_16, 1);
311 ASTD (BFD_RELOC_32, 2);
312 ASTD (BFD_RELOC_ARM_PCREL_BRANCH, 3);
313 ASTD (BFD_RELOC_8_PCREL, 4);
314 ASTD (BFD_RELOC_16_PCREL, 5);
315 ASTD (BFD_RELOC_32_PCREL, 6);
316 default:
317 return NULL;
321 static reloc_howto_type *
322 MY (bfd_reloc_name_lookup) (bfd *abfd ATTRIBUTE_UNUSED,
323 const char *r_name)
325 unsigned int i;
327 for (i = 0;
328 i < sizeof (MY (howto_table)) / sizeof (MY (howto_table)[0]);
329 i++)
330 if (MY (howto_table)[i].name != NULL
331 && strcasecmp (MY (howto_table)[i].name, r_name) == 0)
332 return &MY (howto_table)[i];
334 return NULL;
337 #define MY_swap_std_reloc_in MY (swap_std_reloc_in)
338 #define MY_swap_std_reloc_out MY (swap_std_reloc_out)
339 #define MY_get_section_contents _bfd_generic_get_section_contents
341 void MY_swap_std_reloc_in (bfd *, struct reloc_std_external *, arelent *, asymbol **, bfd_size_type);
342 void MY_swap_std_reloc_out (bfd *, arelent *, struct reloc_std_external *);
344 #include "aoutx.h"
346 void
347 MY_swap_std_reloc_in (bfd *abfd,
348 struct reloc_std_external *bytes,
349 arelent *cache_ptr,
350 asymbol **symbols,
351 bfd_size_type symcount ATTRIBUTE_UNUSED)
353 int r_index;
354 int r_extern;
355 int r_pcrel;
356 struct aoutdata *su = &(abfd->tdata.aout_data->a);
358 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
360 cache_ptr->howto = MY_reloc_howto (abfd, bytes, r_index, r_extern, r_pcrel);
362 MOVE_ADDRESS (0);
365 void
366 MY_swap_std_reloc_out (bfd *abfd,
367 arelent *g,
368 struct reloc_std_external *natptr)
370 int r_index;
371 asymbol *sym = *(g->sym_ptr_ptr);
372 int r_extern;
373 int r_length;
374 int r_pcrel;
375 int r_neg = 0; /* Negative relocs use the BASEREL bit. */
376 asection *output_section = sym->section->output_section;
378 PUT_WORD (abfd, g->address, natptr->r_address);
380 r_length = g->howto->size ; /* Size as a power of two. */
381 if (r_length < 0)
383 r_length = -r_length;
384 r_neg = 1;
387 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
389 /* For RISC iX, in pc-relative relocs the r_pcrel bit means that the
390 relocation has been done already (Only for the 26-bit one I think). */
391 if (g->howto->type == 3)
393 r_length = 3;
394 r_pcrel = 0;
396 else if (g->howto->type == 7)
398 r_length = 3;
399 r_pcrel = 1;
402 /* Name was clobbered by aout_write_syms to be symbol index. */
404 /* If this relocation is relative to a symbol then set the
405 r_index to the symbols index, and the r_extern bit.
407 Absolute symbols can come in in two ways, either as an offset
408 from the abs section, or as a symbol which has an abs value.
409 check for that here. */
411 if (bfd_is_com_section (output_section)
412 || output_section == &bfd_abs_section
413 || output_section == &bfd_und_section)
415 if (bfd_abs_section.symbol == sym)
417 /* Whoops, looked like an abs symbol, but is really an offset
418 from the abs section. */
419 r_index = 0;
420 r_extern = 0;
422 else
424 /* Fill in symbol. */
425 r_extern = 1;
426 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
429 else
431 /* Just an ordinary section. */
432 r_extern = 0;
433 r_index = output_section->target_index;
436 /* Now the fun stuff. */
437 if (bfd_header_big_endian (abfd))
439 natptr->r_index[0] = r_index >> 16;
440 natptr->r_index[1] = r_index >> 8;
441 natptr->r_index[2] = r_index;
442 natptr->r_type[0] =
443 ( (r_extern ? RELOC_STD_BITS_EXTERN_BIG: 0)
444 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG: 0)
445 | (r_neg ? RELOC_ARM_BITS_NEG_BIG: 0)
446 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
448 else
450 natptr->r_index[2] = r_index >> 16;
451 natptr->r_index[1] = r_index >> 8;
452 natptr->r_index[0] = r_index;
453 natptr->r_type[0] =
454 ( (r_extern ? RELOC_STD_BITS_EXTERN_LITTLE: 0)
455 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE: 0)
456 | (r_neg ? RELOC_ARM_BITS_NEG_LITTLE: 0)
457 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
461 #define MY_BFD_TARGET
463 #include "aout-target.h"
465 extern const bfd_target aout_arm_big_vec;
467 const bfd_target aout_arm_little_vec =
469 "a.out-arm-little", /* Name. */
470 bfd_target_aout_flavour,
471 BFD_ENDIAN_LITTLE, /* Target byte order (little). */
472 BFD_ENDIAN_LITTLE, /* Target headers byte order (little). */
473 (HAS_RELOC | EXEC_P | /* Object flags. */
474 HAS_LINENO | HAS_DEBUG |
475 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
476 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
477 MY_symbol_leading_char,
478 AR_PAD_CHAR, /* AR_pad_char. */
479 15, /* AR_max_namelen. */
480 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
481 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
482 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */
483 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
484 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
485 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */
486 {_bfd_dummy_target, MY_object_p, /* bfd_check_format. */
487 bfd_generic_archive_p, MY_core_file_p},
488 {bfd_false, MY_mkobject, /* bfd_set_format. */
489 _bfd_generic_mkarchive, bfd_false},
490 {bfd_false, MY_write_object_contents, /* bfd_write_contents. */
491 _bfd_write_archive_contents, bfd_false},
493 BFD_JUMP_TABLE_GENERIC (MY),
494 BFD_JUMP_TABLE_COPY (MY),
495 BFD_JUMP_TABLE_CORE (MY),
496 BFD_JUMP_TABLE_ARCHIVE (MY),
497 BFD_JUMP_TABLE_SYMBOLS (MY),
498 BFD_JUMP_TABLE_RELOCS (MY),
499 BFD_JUMP_TABLE_WRITE (MY),
500 BFD_JUMP_TABLE_LINK (MY),
501 BFD_JUMP_TABLE_DYNAMIC (MY),
503 & aout_arm_big_vec,
505 (void *) MY_backend_data,
508 const bfd_target aout_arm_big_vec =
510 "a.out-arm-big", /* Name. */
511 bfd_target_aout_flavour,
512 BFD_ENDIAN_BIG, /* Target byte order (big). */
513 BFD_ENDIAN_BIG, /* Target headers byte order (big). */
514 (HAS_RELOC | EXEC_P | /* Object flags. */
515 HAS_LINENO | HAS_DEBUG |
516 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
517 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
518 MY_symbol_leading_char,
519 AR_PAD_CHAR, /* AR_pad_char. */
520 15, /* AR_max_namelen. */
521 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
522 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
523 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
524 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
525 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
526 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
527 {_bfd_dummy_target, MY_object_p, /* bfd_check_format. */
528 bfd_generic_archive_p, MY_core_file_p},
529 {bfd_false, MY_mkobject, /* bfd_set_format. */
530 _bfd_generic_mkarchive, bfd_false},
531 {bfd_false, MY_write_object_contents, /* bfd_write_contents. */
532 _bfd_write_archive_contents, bfd_false},
534 BFD_JUMP_TABLE_GENERIC (MY),
535 BFD_JUMP_TABLE_COPY (MY),
536 BFD_JUMP_TABLE_CORE (MY),
537 BFD_JUMP_TABLE_ARCHIVE (MY),
538 BFD_JUMP_TABLE_SYMBOLS (MY),
539 BFD_JUMP_TABLE_RELOCS (MY),
540 BFD_JUMP_TABLE_WRITE (MY),
541 BFD_JUMP_TABLE_LINK (MY),
542 BFD_JUMP_TABLE_DYNAMIC (MY),
544 & aout_arm_little_vec,
546 (void *) MY_backend_data,