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[binutils.git] / bfd / pe-mips.c
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1 /* BFD back-end for MIPS PE COFF files.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
4 Modified from coff-i386.c by DJ Delorie, dj@cygnus.com
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,
21 MA 02110-1301, USA. */
23 #define COFF_WITH_PE
24 #define COFF_LONG_SECTION_NAMES
25 #define PCRELOFFSET TRUE
27 #include "sysdep.h"
28 #include "bfd.h"
29 #include "libbfd.h"
30 #include "coff/mipspe.h"
31 #include "coff/internal.h"
32 #include "coff/pe.h"
33 #include "libcoff.h"
35 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2
36 /* The page size is a guess based on ELF. */
38 #define COFF_PAGE_SIZE 0x1000
40 /* For some reason when using mips COFF the value stored in the .text
41 section for a reference to a common symbol is the value itself plus
42 any desired offset. Ian Taylor, Cygnus Support. */
44 /* If we are producing relocatable output, we need to do some
45 adjustments to the object file that are not done by the
46 bfd_perform_relocation function. This function is called by every
47 reloc type to make any required adjustments. */
49 static bfd_reloc_status_type
50 coff_mips_reloc (bfd *abfd,
51 arelent *reloc_entry,
52 asymbol *symbol,
53 void * data,
54 asection *input_section ATTRIBUTE_UNUSED,
55 bfd *output_bfd,
56 char **error_message ATTRIBUTE_UNUSED)
58 symvalue diff;
60 if (output_bfd == NULL)
61 return bfd_reloc_continue;
63 if (bfd_is_com_section (symbol->section))
65 #ifndef COFF_WITH_PE
66 /* We are relocating a common symbol. The current value in the
67 object file is ORIG + OFFSET, where ORIG is the value of the
68 common symbol as seen by the object file when it was compiled
69 (this may be zero if the symbol was undefined) and OFFSET is
70 the offset into the common symbol (normally zero, but may be
71 non-zero when referring to a field in a common structure).
72 ORIG is the negative of reloc_entry->addend, which is set by
73 the CALC_ADDEND macro below. We want to replace the value in
74 the object file with NEW + OFFSET, where NEW is the value of
75 the common symbol which we are going to put in the final
76 object file. NEW is symbol->value. */
77 diff = symbol->value + reloc_entry->addend;
78 #else
79 /* In PE mode, we do not offset the common symbol. */
80 diff = reloc_entry->addend;
81 #endif
83 else
84 /* For some reason bfd_perform_relocation always effectively
85 ignores the addend for a COFF target when producing
86 relocatable output. This seems to be always wrong for 386
87 COFF, so we handle the addend here instead. */
88 diff = reloc_entry->addend;
90 #define DOIT(x) \
91 x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + (diff >> howto->rightshift)) & howto->dst_mask))
93 if (diff != 0)
95 reloc_howto_type *howto = reloc_entry->howto;
96 unsigned char *addr = (unsigned char *) data + reloc_entry->address;
98 switch (howto->size)
100 case 0:
102 char x = bfd_get_8 (abfd, addr);
104 DOIT (x);
105 bfd_put_8 (abfd, x, addr);
107 break;
109 case 1:
111 short x = bfd_get_16 (abfd, addr);
113 DOIT (x);
114 bfd_put_16 (abfd, (bfd_vma) x, addr);
116 break;
118 case 2:
120 long x = bfd_get_32 (abfd, addr);
122 DOIT (x);
123 bfd_put_32 (abfd, (bfd_vma) x, addr);
125 break;
127 default:
128 abort ();
132 /* Now let bfd_perform_relocation finish everything up. */
133 return bfd_reloc_continue;
136 #ifdef COFF_WITH_PE
137 /* Return TRUE if this relocation should
138 appear in the output .reloc section. */
140 static bfd_boolean
141 in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED, reloc_howto_type *howto)
143 return ! howto->pc_relative && howto->type != MIPS_R_RVA;
145 #endif
147 #ifndef PCRELOFFSET
148 #define PCRELOFFSET FALSE
149 #endif
151 static reloc_howto_type howto_table[] =
153 /* Reloc type 0 is ignored. The reloc reading code ensures that
154 this is a reference to the .abs section, which will cause
155 bfd_perform_relocation to do nothing. */
156 HOWTO (MIPS_R_ABSOLUTE, /* Type. */
157 0, /* Rightshift. */
158 0, /* Size (0 = byte, 1 = short, 2 = long). */
159 8, /* Bitsize. */
160 FALSE, /* PC_relative. */
161 0, /* Bitpos. */
162 complain_overflow_dont, /* Complain_on_overflow. */
163 0, /* Special_function. */
164 "IGNORE", /* Name. */
165 FALSE, /* Partial_inplace. */
166 0, /* Src_mask. */
167 0, /* Dst_mask. */
168 FALSE), /* Pcrel_offset. */
170 /* A 16 bit reference to a symbol, normally from a data section. */
171 HOWTO (MIPS_R_REFHALF, /* Type. */
172 0, /* Rightshift. */
173 1, /* Size (0 = byte, 1 = short, 2 = long). */
174 16, /* Bitsize. */
175 FALSE, /* PC_relative. */
176 0, /* Bitpos. */
177 complain_overflow_bitfield, /* Complain_on_overflow. */
178 coff_mips_reloc, /* Special_function. */
179 "REFHALF", /* Name. */
180 TRUE, /* Partial_inplace. */
181 0xffff, /* Src_mask. */
182 0xffff, /* Dst_mask. */
183 FALSE), /* Pcrel_offset. */
185 /* A 32 bit reference to a symbol, normally from a data section. */
186 HOWTO (MIPS_R_REFWORD, /* Type. */
187 0, /* Rightshift. */
188 2, /* Size (0 = byte, 1 = short, 2 = long). */
189 32, /* Bitsize. */
190 FALSE, /* PC_relative. */
191 0, /* Bitpos. */
192 complain_overflow_bitfield, /* Complain_on_overflow. */
193 coff_mips_reloc, /* Special_function. */
194 "REFWORD", /* Name. */
195 TRUE, /* Partial_inplace. */
196 0xffffffff, /* Src_mask. */
197 0xffffffff, /* Dst_mask. */
198 FALSE), /* Pcrel_offset. */
200 /* A 26 bit absolute jump address. */
201 HOWTO (MIPS_R_JMPADDR, /* Type. */
202 2, /* Rightshift. */
203 2, /* Size (0 = byte, 1 = short, 2 = long). */
204 26, /* Bitsize. */
205 FALSE, /* PC_relative. */
206 0, /* Bitpos. */
207 complain_overflow_dont, /* Complain_on_overflow. */
208 /* This needs complex overflow
209 detection, because the upper four
210 bits must match the PC. */
211 coff_mips_reloc, /* Special_function. */
212 "JMPADDR", /* Name. */
213 TRUE, /* Partial_inplace. */
214 0x3ffffff, /* Src_mask. */
215 0x3ffffff, /* Dst_mask. */
216 FALSE), /* Pcrel_offset. */
218 /* The high 16 bits of a symbol value. Handled by the function
219 mips_refhi_reloc. */
220 HOWTO (MIPS_R_REFHI, /* Type. */
221 16, /* Rightshift. */
222 2, /* Size (0 = byte, 1 = short, 2 = long). */
223 16, /* Bitsize. */
224 FALSE, /* PC_relative. */
225 0, /* Bitpos. */
226 complain_overflow_bitfield, /* Complain_on_overflow. */
227 coff_mips_reloc, /* Special_function. */
228 "REFHI", /* Name. */
229 TRUE, /* Partial_inplace. */
230 0xffff, /* Src_mask. */
231 0xffff, /* Dst_mask. */
232 FALSE), /* Pcrel_offset. */
234 /* The low 16 bits of a symbol value. */
235 HOWTO (MIPS_R_REFLO, /* Type. */
236 0, /* Rightshift. */
237 2, /* Size (0 = byte, 1 = short, 2 = long). */
238 16, /* Bitsize. */
239 FALSE, /* PC_relative. */
240 0, /* Bitpos. */
241 complain_overflow_dont, /* Complain_on_overflow. */
242 coff_mips_reloc, /* Special_function. */
243 "REFLO", /* Name. */
244 TRUE, /* Partial_inplace. */
245 0xffff, /* Src_mask. */
246 0xffff, /* Dst_mask. */
247 FALSE), /* Pcrel_offset. */
249 /* A reference to an offset from the gp register. Handled by the
250 function mips_gprel_reloc. */
251 HOWTO (MIPS_R_GPREL, /* Type. */
252 0, /* Rightshift. */
253 2, /* Size (0 = byte, 1 = short, 2 = long). */
254 16, /* Bitsize. */
255 FALSE, /* PC_relative. */
256 0, /* Bitpos. */
257 complain_overflow_signed, /* Complain_on_overflow. */
258 coff_mips_reloc, /* Special_function. */
259 "GPREL", /* Name. */
260 TRUE, /* Partial_inplace. */
261 0xffff, /* Src_mask. */
262 0xffff, /* Dst_mask. */
263 FALSE), /* Pcrel_offset. */
265 /* A reference to a literal using an offset from the gp register.
266 Handled by the function mips_gprel_reloc. */
267 HOWTO (MIPS_R_LITERAL, /* Type. */
268 0, /* Rightshift. */
269 2, /* Size (0 = byte, 1 = short, 2 = long). */
270 16, /* Bitsize. */
271 FALSE, /* PC_relative. */
272 0, /* Bitpos. */
273 complain_overflow_signed, /* Complain_on_overflow. */
274 coff_mips_reloc, /* Special_function. */
275 "LITERAL", /* Name. */
276 TRUE, /* Partial_inplace. */
277 0xffff, /* Src_mask. */
278 0xffff, /* Dst_mask. */
279 FALSE), /* Pcrel_offset. */
281 EMPTY_HOWTO (8),
282 EMPTY_HOWTO (9),
283 EMPTY_HOWTO (10),
284 EMPTY_HOWTO (11),
285 EMPTY_HOWTO (12),
286 EMPTY_HOWTO (13),
287 EMPTY_HOWTO (14),
288 EMPTY_HOWTO (15),
289 EMPTY_HOWTO (16),
290 EMPTY_HOWTO (17),
291 EMPTY_HOWTO (18),
292 EMPTY_HOWTO (19),
293 EMPTY_HOWTO (20),
294 EMPTY_HOWTO (21),
295 EMPTY_HOWTO (22),
296 EMPTY_HOWTO (23),
297 EMPTY_HOWTO (24),
298 EMPTY_HOWTO (25),
299 EMPTY_HOWTO (26),
300 EMPTY_HOWTO (27),
301 EMPTY_HOWTO (28),
302 EMPTY_HOWTO (29),
303 EMPTY_HOWTO (30),
304 EMPTY_HOWTO (31),
305 EMPTY_HOWTO (32),
306 EMPTY_HOWTO (33),
307 HOWTO (MIPS_R_RVA, /* Type. */
308 0, /* Rightshift. */
309 2, /* Size (0 = byte, 1 = short, 2 = long). */
310 32, /* Bitsize. */
311 FALSE, /* PC_relative. */
312 0, /* Bitpos. */
313 complain_overflow_bitfield, /* Complain_on_overflow. */
314 coff_mips_reloc, /* Special_function. */
315 "rva32", /* Name. */
316 TRUE, /* Partial_inplace. */
317 0xffffffff, /* Src_mask. */
318 0xffffffff, /* Dst_mask. */
319 FALSE), /* Pcrel_offset. */
320 EMPTY_HOWTO (35),
321 EMPTY_HOWTO (36),
322 HOWTO (MIPS_R_PAIR, /* Type. */
323 0, /* Rightshift. */
324 2, /* Size (0 = byte, 1 = short, 2 = long). */
325 32, /* Bitsize. */
326 FALSE, /* PC_relative. */
327 0, /* Bitpos. */
328 complain_overflow_bitfield, /* Complain_on_overflow. */
329 coff_mips_reloc, /* Special_function. */
330 "PAIR", /* Name. */
331 TRUE, /* Partial_inplace. */
332 0xffffffff, /* Src_mask. */
333 0xffffffff, /* Dst_mask. */
334 FALSE), /* Pcrel_offset. */
337 /* Turn a howto into a reloc nunmber. */
339 #define SELECT_RELOC(x, howto) { x.r_type = howto->type; }
340 #define BADMAG(x) MIPSBADMAG (x)
342 /* Customize coffcode.h. */
343 #define MIPS 1
345 #define RTYPE2HOWTO(cache_ptr, dst) \
346 (cache_ptr)->howto = howto_table + (dst)->r_type;
348 /* Compute the addend of a reloc. If the reloc is to a common symbol,
349 the object file contains the value of the common symbol. By the
350 time this is called, the linker may be using a different symbol
351 from a different object file with a different value. Therefore, we
352 hack wildly to locate the original symbol from this file so that we
353 can make the correct adjustment. This macro sets coffsym to the
354 symbol from the original file, and uses it to set the addend value
355 correctly. If this is not a common symbol, the usual addend
356 calculation is done, except that an additional tweak is needed for
357 PC relative relocs.
358 FIXME: This macro refers to symbols and asect; these are from the
359 calling function, not the macro arguments. */
361 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
363 coff_symbol_type *coffsym = NULL; \
364 if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
365 coffsym = (obj_symbols (abfd) \
366 + (cache_ptr->sym_ptr_ptr - symbols)); \
367 else if (ptr) \
368 coffsym = coff_symbol_from (abfd, ptr); \
369 if (coffsym != NULL \
370 && coffsym->native->u.syment.n_scnum == 0) \
371 cache_ptr->addend = - coffsym->native->u.syment.n_value; \
372 else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
373 && ptr->section != NULL) \
374 cache_ptr->addend = - (ptr->section->vma + ptr->value); \
375 else \
376 cache_ptr->addend = 0; \
377 if (ptr && howto_table[reloc.r_type].pc_relative) \
378 cache_ptr->addend += asect->vma; \
381 /* Convert an rtype to howto for the COFF backend linker. */
383 static reloc_howto_type *
384 coff_mips_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
385 asection *sec,
386 struct internal_reloc *rel,
387 struct coff_link_hash_entry *h,
388 struct internal_syment *sym,
389 bfd_vma *addendp)
392 reloc_howto_type *howto;
394 howto = howto_table + rel->r_type;
396 #ifdef COFF_WITH_PE
397 *addendp = 0;
398 #endif
400 if (howto->pc_relative)
401 *addendp += sec->vma;
403 if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
405 /* This is a common symbol. The section contents include the
406 size (sym->n_value) as an addend. The relocate_section
407 function will be adding in the final value of the symbol. We
408 need to subtract out the current size in order to get the
409 correct result. */
411 BFD_ASSERT (h != NULL);
413 #ifndef COFF_WITH_PE
414 /* I think we *do* want to bypass this. If we don't, I have
415 seen some data parameters get the wrong relocation address.
416 If I link two versions with and without this section bypassed
417 and then do a binary comparison, the addresses which are
418 different can be looked up in the map. The case in which
419 this section has been bypassed has addresses which correspond
420 to values I can find in the map. */
421 *addendp -= sym->n_value;
422 #endif
425 #ifndef COFF_WITH_PE
426 /* If the output symbol is common (in which case this must be a
427 relocatable link), we need to add in the final size of the
428 common symbol. */
429 if (h != NULL && h->root.type == bfd_link_hash_common)
430 *addendp += h->root.u.c.size;
431 #endif
433 #ifdef COFF_WITH_PE
434 if (howto->pc_relative)
436 *addendp -= 4;
438 /* If the symbol is defined, then the generic code is going to
439 add back the symbol value in order to cancel out an
440 adjustment it made to the addend. However, we set the addend
441 to 0 at the start of this function. We need to adjust here,
442 to avoid the adjustment the generic code will make. FIXME:
443 This is getting a bit hackish. */
444 if (sym != NULL && sym->n_scnum != 0)
445 *addendp -= sym->n_value;
448 if (rel->r_type == MIPS_R_RVA)
449 *addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase;
450 #endif
452 return howto;
455 #define coff_rtype_to_howto coff_mips_rtype_to_howto
456 #define coff_bfd_reloc_type_lookup coff_mips_reloc_type_lookup
457 #define coff_bfd_reloc_name_lookup coff_mips_reloc_name_lookup
459 /* Get the howto structure for a generic reloc type. */
461 static reloc_howto_type *
462 coff_mips_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
463 bfd_reloc_code_real_type code)
465 int mips_type;
467 switch (code)
469 case BFD_RELOC_16:
470 mips_type = MIPS_R_REFHALF;
471 break;
472 case BFD_RELOC_32:
473 case BFD_RELOC_CTOR:
474 mips_type = MIPS_R_REFWORD;
475 break;
476 case BFD_RELOC_MIPS_JMP:
477 mips_type = MIPS_R_JMPADDR;
478 break;
479 case BFD_RELOC_HI16_S:
480 mips_type = MIPS_R_REFHI;
481 break;
482 case BFD_RELOC_LO16:
483 mips_type = MIPS_R_REFLO;
484 break;
485 case BFD_RELOC_GPREL16:
486 mips_type = MIPS_R_GPREL;
487 break;
488 case BFD_RELOC_MIPS_LITERAL:
489 mips_type = MIPS_R_LITERAL;
490 break;
491 case BFD_RELOC_RVA:
492 mips_type = MIPS_R_RVA;
493 break;
494 default:
495 return NULL;
498 return & howto_table [mips_type];
501 static reloc_howto_type *
502 coff_mips_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
503 const char *r_name)
505 unsigned int i;
507 for (i = 0;
508 i < sizeof (howto_table) / sizeof (howto_table[0]);
509 i++)
510 if (howto_table[i].name != NULL
511 && strcasecmp (howto_table[i].name, r_name) == 0)
512 return &howto_table[i];
514 return NULL;
517 static void
518 mips_swap_reloc_in (bfd * abfd, void * src, void * dst)
520 static struct internal_reloc pair_prev;
521 RELOC *reloc_src = (RELOC *) src;
522 struct internal_reloc *reloc_dst = (struct internal_reloc *) dst;
524 reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr);
525 reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx);
526 reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type);
527 reloc_dst->r_size = 0;
528 reloc_dst->r_extern = 0;
529 reloc_dst->r_offset = 0;
531 switch (reloc_dst->r_type)
533 case MIPS_R_REFHI:
534 pair_prev = *reloc_dst;
535 break;
536 case MIPS_R_PAIR:
537 reloc_dst->r_offset = reloc_dst->r_symndx;
538 if (reloc_dst->r_offset & 0x8000)
539 reloc_dst->r_offset -= 0x10000;
540 reloc_dst->r_symndx = pair_prev.r_symndx;
541 break;
545 static unsigned int
546 mips_swap_reloc_out (bfd * abfd, void * src, void * dst)
548 static int prev_offset = 1;
549 static bfd_vma prev_addr = 0;
550 struct internal_reloc *reloc_src = (struct internal_reloc *)src;
551 struct external_reloc *reloc_dst = (struct external_reloc *)dst;
553 switch (reloc_src->r_type)
555 case MIPS_R_REFHI:
556 prev_addr = reloc_src->r_vaddr;
557 prev_offset = reloc_src->r_offset;
558 break;
559 case MIPS_R_REFLO:
560 if (reloc_src->r_vaddr == prev_addr)
562 /* FIXME: only slightly hackish. If we see a REFLO pointing to
563 the same address as a REFHI, we assume this is the matching
564 PAIR reloc and output it accordingly. The symndx is really
565 the low 16 bits of the addend */
566 H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr);
567 H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx);
568 H_PUT_16 (abfd, MIPS_R_PAIR, reloc_dst->r_type);
569 return RELSZ;
571 break;
574 H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr);
575 H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx);
577 H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type);
578 return RELSZ;
581 #define coff_swap_reloc_in mips_swap_reloc_in
582 #define coff_swap_reloc_out mips_swap_reloc_out
583 #define NO_COFF_RELOCS
585 static bfd_boolean
586 coff_pe_mips_relocate_section (bfd *output_bfd,
587 struct bfd_link_info *info,
588 bfd *input_bfd,
589 asection *input_section,
590 bfd_byte *contents,
591 struct internal_reloc *relocs,
592 struct internal_syment *syms,
593 asection **sections)
595 bfd_vma gp;
596 bfd_boolean gp_undefined;
597 size_t adjust;
598 struct internal_reloc *rel;
599 struct internal_reloc *rel_end;
600 unsigned int i;
601 bfd_boolean got_lo;
603 if (info->relocatable)
605 (*_bfd_error_handler)
606 (_("%B: `ld -r' not supported with PE MIPS objects\n"), input_bfd);
607 bfd_set_error (bfd_error_bad_value);
608 return FALSE;
611 BFD_ASSERT (input_bfd->xvec->byteorder
612 == output_bfd->xvec->byteorder);
614 gp = _bfd_get_gp_value (output_bfd);
615 gp_undefined = (gp == 0) ? TRUE : FALSE;
616 got_lo = FALSE;
617 adjust = 0;
618 rel = relocs;
619 rel_end = rel + input_section->reloc_count;
621 for (i = 0; rel < rel_end; rel++, i++)
623 long symndx;
624 struct coff_link_hash_entry *h;
625 struct internal_syment *sym;
626 bfd_vma addend = 0;
627 bfd_vma val, tmp, targ, src, low;
628 reloc_howto_type *howto;
629 unsigned char *mem = contents + rel->r_vaddr;
631 symndx = rel->r_symndx;
633 if (symndx == -1)
635 h = NULL;
636 sym = NULL;
638 else
640 h = obj_coff_sym_hashes (input_bfd)[symndx];
641 sym = syms + symndx;
644 /* COFF treats common symbols in one of two ways. Either the
645 size of the symbol is included in the section contents, or it
646 is not. We assume that the size is not included, and force
647 the rtype_to_howto function to adjust the addend as needed. */
649 if (sym != NULL && sym->n_scnum != 0)
650 addend = - sym->n_value;
651 else
652 addend = 0;
654 howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
655 sym, &addend);
656 if (howto == NULL)
657 return FALSE;
659 /* If we are doing a relocatable link, then we can just ignore
660 a PC relative reloc that is pcrel_offset. It will already
661 have the correct value. If this is not a relocatable link,
662 then we should ignore the symbol value. */
663 if (howto->pc_relative && howto->pcrel_offset)
665 if (info->relocatable)
666 continue;
667 if (sym != NULL && sym->n_scnum != 0)
668 addend += sym->n_value;
671 val = 0;
673 if (h == NULL)
675 asection *sec;
677 if (symndx == -1)
679 sec = bfd_abs_section_ptr;
680 val = 0;
682 else
684 sec = sections[symndx];
685 val = (sec->output_section->vma
686 + sec->output_offset
687 + sym->n_value);
688 if (! obj_pe (input_bfd))
689 val -= sec->vma;
692 else
694 if (h->root.type == bfd_link_hash_defined
695 || h->root.type == bfd_link_hash_defweak)
697 asection *sec;
699 sec = h->root.u.def.section;
700 val = (h->root.u.def.value
701 + sec->output_section->vma
702 + sec->output_offset);
705 else if (! info->relocatable)
707 if (! ((*info->callbacks->undefined_symbol)
708 (info, h->root.root.string, input_bfd, input_section,
709 rel->r_vaddr - input_section->vma, TRUE)))
710 return FALSE;
714 src = rel->r_vaddr + input_section->output_section->vma
715 + input_section->output_offset;
717 /* OK, at this point the following variables are set up:
718 src = VMA of the memory we're fixing up
719 mem = pointer to memory we're fixing up
720 val = VMA of what we need to refer to. */
722 #define UI(x) (*_bfd_error_handler) (_("%B: unimplemented %s\n"), \
723 input_bfd, x); \
724 bfd_set_error (bfd_error_bad_value);
726 switch (rel->r_type)
728 case MIPS_R_ABSOLUTE:
729 /* Ignore these. */
730 break;
732 case MIPS_R_REFHALF:
733 UI ("refhalf");
734 break;
736 case MIPS_R_REFWORD:
737 tmp = bfd_get_32 (input_bfd, mem);
738 /* printf ("refword: src=%08x targ=%08x+%08x\n", src, tmp, val); */
739 tmp += val;
740 bfd_put_32 (input_bfd, tmp, mem);
741 break;
743 case MIPS_R_JMPADDR:
744 tmp = bfd_get_32 (input_bfd, mem);
745 targ = val + (tmp & 0x03ffffff) * 4;
746 if ((src & 0xf0000000) != (targ & 0xf0000000))
748 (*_bfd_error_handler) (_("%B: jump too far away\n"), input_bfd);
749 bfd_set_error (bfd_error_bad_value);
750 return FALSE;
752 tmp &= 0xfc000000;
753 tmp |= (targ / 4) & 0x3ffffff;
754 bfd_put_32 (input_bfd, tmp, mem);
755 break;
757 case MIPS_R_REFHI:
758 tmp = bfd_get_32 (input_bfd, mem);
759 switch (rel[1].r_type)
761 case MIPS_R_PAIR:
762 /* MS PE object */
763 targ = val + rel[1].r_offset + ((tmp & 0xffff) << 16);
764 break;
765 case MIPS_R_REFLO:
766 /* GNU COFF object */
767 low = bfd_get_32 (input_bfd, contents + rel[1].r_vaddr);
768 low &= 0xffff;
769 if (low & 0x8000)
770 low -= 0x10000;
771 targ = val + low + ((tmp & 0xffff) << 16);
772 break;
773 default:
774 (*_bfd_error_handler) (_("%B: bad pair/reflo after refhi\n"),
775 input_bfd);
776 bfd_set_error (bfd_error_bad_value);
777 return FALSE;
779 tmp &= 0xffff0000;
780 tmp |= (targ >> 16) & 0xffff;
781 bfd_put_32 (input_bfd, tmp, mem);
782 break;
784 case MIPS_R_REFLO:
785 tmp = bfd_get_32 (input_bfd, mem);
786 targ = val + (tmp & 0xffff);
787 /* printf ("refword: src=%08x targ=%08x\n", src, targ); */
788 tmp &= 0xffff0000;
789 tmp |= targ & 0xffff;
790 bfd_put_32 (input_bfd, tmp, mem);
791 break;
793 case MIPS_R_GPREL:
794 case MIPS_R_LITERAL:
795 UI ("gprel");
796 break;
798 case MIPS_R_SECTION:
799 UI ("section");
800 break;
802 case MIPS_R_SECREL:
803 UI ("secrel");
804 break;
806 case MIPS_R_SECRELLO:
807 UI ("secrello");
808 break;
810 case MIPS_R_SECRELHI:
811 UI ("secrelhi");
812 break;
814 case MIPS_R_RVA:
815 tmp = bfd_get_32 (input_bfd, mem);
816 /* printf ("rva: src=%08x targ=%08x+%08x\n", src, tmp, val); */
817 tmp += val
818 - pe_data (input_section->output_section->owner)->pe_opthdr.ImageBase;
819 bfd_put_32 (input_bfd, tmp, mem);
820 break;
822 case MIPS_R_PAIR:
823 /* ignore these */
824 break;
828 return TRUE;
831 #define coff_relocate_section coff_pe_mips_relocate_section
833 #ifdef TARGET_UNDERSCORE
835 /* If mips gcc uses underscores for symbol names, then it does not use
836 a leading dot for local labels, so if TARGET_UNDERSCORE is defined
837 we treat all symbols starting with L as local. */
839 static bfd_boolean
840 coff_mips_is_local_label_name (bfd *abfd, const char *name)
842 if (name[0] == 'L')
843 return TRUE;
845 return _bfd_coff_is_local_label_name (abfd, name);
848 #define coff_bfd_is_local_label_name coff_mips_is_local_label_name
850 #endif /* TARGET_UNDERSCORE */
852 #define COFF_NO_HACK_SCNHDR_SIZE
854 #include "coffcode.h"
856 const bfd_target
857 #ifdef TARGET_SYM
858 TARGET_SYM =
859 #else
860 mipslpe_vec =
861 #endif
863 #ifdef TARGET_NAME
864 TARGET_NAME,
865 #else
866 "pe-mips", /* Name. */
867 #endif
868 bfd_target_coff_flavour,
869 BFD_ENDIAN_LITTLE, /* Data byte order is little. */
870 BFD_ENDIAN_LITTLE, /* Header byte order is little. */
872 (HAS_RELOC | EXEC_P | /* Object flags. */
873 HAS_LINENO | HAS_DEBUG |
874 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
876 #ifndef COFF_WITH_PE
877 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */
878 | SEC_CODE | SEC_DATA),
879 #else
880 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */
881 | SEC_CODE | SEC_DATA
882 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
883 #endif
885 #ifdef TARGET_UNDERSCORE
886 TARGET_UNDERSCORE, /* Leading underscore. */
887 #else
888 0, /* leading underscore */
889 #endif
890 '/', /* AR_pad_char. */
891 15, /* AR_max_namelen. */
893 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
894 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
895 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */
896 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
897 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
898 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */
900 /* Note that we allow an object file to be treated as a core file as well. */
901 {_bfd_dummy_target, coff_object_p, /* bfd_check_format. */
902 bfd_generic_archive_p, coff_object_p},
903 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format. */
904 bfd_false},
905 {bfd_false, coff_write_object_contents, /* bfd_write_contents. */
906 _bfd_write_archive_contents, bfd_false},
908 BFD_JUMP_TABLE_GENERIC (coff),
909 BFD_JUMP_TABLE_COPY (coff),
910 BFD_JUMP_TABLE_CORE (_bfd_nocore),
911 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
912 BFD_JUMP_TABLE_SYMBOLS (coff),
913 BFD_JUMP_TABLE_RELOCS (coff),
914 BFD_JUMP_TABLE_WRITE (coff),
915 BFD_JUMP_TABLE_LINK (coff),
916 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
918 NULL,
920 COFF_SWAP_TABLE