Commit | Line | Data |
---|---|---|
17505c5c | 1 | /* BFD back-end for MIPS PE COFF files. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
157090f7 | 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. |
17505c5c NC |
4 | Modified from coff-i386.c by DJ Delorie, dj@cygnus.com |
5 | ||
7920ce38 | 6 | This file is part of BFD, the Binary File Descriptor library. |
17505c5c | 7 | |
7920ce38 NC |
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 2 of the License, or | |
11 | (at your option) any later version. | |
17505c5c | 12 | |
7920ce38 NC |
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. | |
17505c5c | 17 | |
7920ce38 NC |
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 | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
17505c5c NC |
21 | |
22 | #define COFF_WITH_PE | |
23 | #define COFF_LONG_SECTION_NAMES | |
b34976b6 | 24 | #define PCRELOFFSET TRUE |
17505c5c | 25 | |
17505c5c | 26 | #include "sysdep.h" |
3db64b00 | 27 | #include "bfd.h" |
17505c5c | 28 | #include "libbfd.h" |
17505c5c | 29 | #include "coff/mipspe.h" |
17505c5c | 30 | #include "coff/internal.h" |
17505c5c | 31 | #include "coff/pe.h" |
17505c5c NC |
32 | #include "libcoff.h" |
33 | ||
7920ce38 | 34 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2 |
17505c5c NC |
35 | /* The page size is a guess based on ELF. */ |
36 | ||
37 | #define COFF_PAGE_SIZE 0x1000 | |
38 | ||
39 | /* For some reason when using mips COFF the value stored in the .text | |
40 | section for a reference to a common symbol is the value itself plus | |
41 | any desired offset. Ian Taylor, Cygnus Support. */ | |
42 | ||
1049f94e | 43 | /* If we are producing relocatable output, we need to do some |
17505c5c NC |
44 | adjustments to the object file that are not done by the |
45 | bfd_perform_relocation function. This function is called by every | |
46 | reloc type to make any required adjustments. */ | |
47 | ||
48 | static bfd_reloc_status_type | |
7920ce38 NC |
49 | coff_mips_reloc (bfd *abfd, |
50 | arelent *reloc_entry, | |
51 | asymbol *symbol, | |
52 | void * data, | |
53 | asection *input_section ATTRIBUTE_UNUSED, | |
54 | bfd *output_bfd, | |
55 | char **error_message ATTRIBUTE_UNUSED) | |
17505c5c NC |
56 | { |
57 | symvalue diff; | |
58 | ||
7920ce38 | 59 | if (output_bfd == NULL) |
17505c5c NC |
60 | return bfd_reloc_continue; |
61 | ||
62 | if (bfd_is_com_section (symbol->section)) | |
63 | { | |
64 | #ifndef COFF_WITH_PE | |
65 | /* We are relocating a common symbol. The current value in the | |
66 | object file is ORIG + OFFSET, where ORIG is the value of the | |
67 | common symbol as seen by the object file when it was compiled | |
68 | (this may be zero if the symbol was undefined) and OFFSET is | |
69 | the offset into the common symbol (normally zero, but may be | |
70 | non-zero when referring to a field in a common structure). | |
71 | ORIG is the negative of reloc_entry->addend, which is set by | |
72 | the CALC_ADDEND macro below. We want to replace the value in | |
73 | the object file with NEW + OFFSET, where NEW is the value of | |
74 | the common symbol which we are going to put in the final | |
75 | object file. NEW is symbol->value. */ | |
76 | diff = symbol->value + reloc_entry->addend; | |
77 | #else | |
78 | /* In PE mode, we do not offset the common symbol. */ | |
79 | diff = reloc_entry->addend; | |
80 | #endif | |
81 | } | |
82 | else | |
7920ce38 NC |
83 | /* For some reason bfd_perform_relocation always effectively |
84 | ignores the addend for a COFF target when producing | |
85 | relocatable output. This seems to be always wrong for 386 | |
86 | COFF, so we handle the addend here instead. */ | |
87 | diff = reloc_entry->addend; | |
17505c5c | 88 | |
17505c5c NC |
89 | #define DOIT(x) \ |
90 | x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + (diff >> howto->rightshift)) & howto->dst_mask)) | |
91 | ||
92 | if (diff != 0) | |
93 | { | |
94 | reloc_howto_type *howto = reloc_entry->howto; | |
95 | unsigned char *addr = (unsigned char *) data + reloc_entry->address; | |
96 | ||
97 | switch (howto->size) | |
98 | { | |
99 | case 0: | |
100 | { | |
101 | char x = bfd_get_8 (abfd, addr); | |
7920ce38 | 102 | |
17505c5c NC |
103 | DOIT (x); |
104 | bfd_put_8 (abfd, x, addr); | |
105 | } | |
106 | break; | |
107 | ||
108 | case 1: | |
109 | { | |
110 | short x = bfd_get_16 (abfd, addr); | |
7920ce38 | 111 | |
17505c5c | 112 | DOIT (x); |
dc810e39 | 113 | bfd_put_16 (abfd, (bfd_vma) x, addr); |
17505c5c NC |
114 | } |
115 | break; | |
116 | ||
117 | case 2: | |
118 | { | |
119 | long x = bfd_get_32 (abfd, addr); | |
7920ce38 | 120 | |
17505c5c | 121 | DOIT (x); |
dc810e39 | 122 | bfd_put_32 (abfd, (bfd_vma) x, addr); |
17505c5c NC |
123 | } |
124 | break; | |
125 | ||
126 | default: | |
127 | abort (); | |
128 | } | |
129 | } | |
130 | ||
131 | /* Now let bfd_perform_relocation finish everything up. */ | |
132 | return bfd_reloc_continue; | |
133 | } | |
134 | ||
135 | #ifdef COFF_WITH_PE | |
b34976b6 | 136 | /* Return TRUE if this relocation should |
892339ee | 137 | appear in the output .reloc section. */ |
17505c5c | 138 | |
b34976b6 | 139 | static bfd_boolean |
7920ce38 | 140 | in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED, reloc_howto_type *howto) |
17505c5c NC |
141 | { |
142 | return ! howto->pc_relative && howto->type != MIPS_R_RVA; | |
892339ee | 143 | } |
17505c5c NC |
144 | #endif |
145 | ||
146 | #ifndef PCRELOFFSET | |
b34976b6 | 147 | #define PCRELOFFSET FALSE |
17505c5c NC |
148 | #endif |
149 | ||
892339ee | 150 | static reloc_howto_type howto_table[] = |
17505c5c NC |
151 | { |
152 | /* Reloc type 0 is ignored. The reloc reading code ensures that | |
153 | this is a reference to the .abs section, which will cause | |
154 | bfd_perform_relocation to do nothing. */ | |
7920ce38 NC |
155 | HOWTO (MIPS_R_ABSOLUTE, /* Type. */ |
156 | 0, /* Rightshift. */ | |
157 | 0, /* Size (0 = byte, 1 = short, 2 = long). */ | |
158 | 8, /* Bitsize. */ | |
159 | FALSE, /* PC_relative. */ | |
160 | 0, /* Bitpos. */ | |
161 | complain_overflow_dont, /* Complain_on_overflow. */ | |
162 | 0, /* Special_function. */ | |
163 | "IGNORE", /* Name. */ | |
164 | FALSE, /* Partial_inplace. */ | |
165 | 0, /* Src_mask. */ | |
166 | 0, /* Dst_mask. */ | |
167 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
168 | |
169 | /* A 16 bit reference to a symbol, normally from a data section. */ | |
7920ce38 NC |
170 | HOWTO (MIPS_R_REFHALF, /* Type. */ |
171 | 0, /* Rightshift. */ | |
172 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
173 | 16, /* Bitsize. */ | |
174 | FALSE, /* PC_relative. */ | |
175 | 0, /* Bitpos. */ | |
176 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
177 | coff_mips_reloc, /* Special_function. */ | |
178 | "REFHALF", /* Name. */ | |
179 | TRUE, /* Partial_inplace. */ | |
180 | 0xffff, /* Src_mask. */ | |
181 | 0xffff, /* Dst_mask. */ | |
182 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
183 | |
184 | /* A 32 bit reference to a symbol, normally from a data section. */ | |
7920ce38 NC |
185 | HOWTO (MIPS_R_REFWORD, /* Type. */ |
186 | 0, /* Rightshift. */ | |
187 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
188 | 32, /* Bitsize. */ | |
189 | FALSE, /* PC_relative. */ | |
190 | 0, /* Bitpos. */ | |
191 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
192 | coff_mips_reloc, /* Special_function. */ | |
193 | "REFWORD", /* Name. */ | |
194 | TRUE, /* Partial_inplace. */ | |
195 | 0xffffffff, /* Src_mask. */ | |
196 | 0xffffffff, /* Dst_mask. */ | |
197 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
198 | |
199 | /* A 26 bit absolute jump address. */ | |
7920ce38 NC |
200 | HOWTO (MIPS_R_JMPADDR, /* Type. */ |
201 | 2, /* Rightshift. */ | |
202 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
203 | 26, /* Bitsize. */ | |
204 | FALSE, /* PC_relative. */ | |
205 | 0, /* Bitpos. */ | |
206 | complain_overflow_dont, /* Complain_on_overflow. */ | |
17505c5c NC |
207 | /* This needs complex overflow |
208 | detection, because the upper four | |
209 | bits must match the PC. */ | |
7920ce38 NC |
210 | coff_mips_reloc, /* Special_function. */ |
211 | "JMPADDR", /* Name. */ | |
212 | TRUE, /* Partial_inplace. */ | |
213 | 0x3ffffff, /* Src_mask. */ | |
214 | 0x3ffffff, /* Dst_mask. */ | |
215 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
216 | |
217 | /* The high 16 bits of a symbol value. Handled by the function | |
218 | mips_refhi_reloc. */ | |
7920ce38 NC |
219 | HOWTO (MIPS_R_REFHI, /* Type. */ |
220 | 16, /* Rightshift. */ | |
221 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
222 | 16, /* Bitsize. */ | |
223 | FALSE, /* PC_relative. */ | |
224 | 0, /* Bitpos. */ | |
225 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
226 | coff_mips_reloc, /* Special_function. */ | |
227 | "REFHI", /* Name. */ | |
228 | TRUE, /* Partial_inplace. */ | |
229 | 0xffff, /* Src_mask. */ | |
230 | 0xffff, /* Dst_mask. */ | |
231 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
232 | |
233 | /* The low 16 bits of a symbol value. */ | |
7920ce38 NC |
234 | HOWTO (MIPS_R_REFLO, /* Type. */ |
235 | 0, /* Rightshift. */ | |
236 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
237 | 16, /* Bitsize. */ | |
238 | FALSE, /* PC_relative. */ | |
239 | 0, /* Bitpos. */ | |
240 | complain_overflow_dont, /* Complain_on_overflow. */ | |
241 | coff_mips_reloc, /* Special_function. */ | |
242 | "REFLO", /* Name. */ | |
243 | TRUE, /* Partial_inplace. */ | |
244 | 0xffff, /* Src_mask. */ | |
245 | 0xffff, /* Dst_mask. */ | |
246 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
247 | |
248 | /* A reference to an offset from the gp register. Handled by the | |
249 | function mips_gprel_reloc. */ | |
7920ce38 NC |
250 | HOWTO (MIPS_R_GPREL, /* Type. */ |
251 | 0, /* Rightshift. */ | |
252 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
253 | 16, /* Bitsize. */ | |
254 | FALSE, /* PC_relative. */ | |
255 | 0, /* Bitpos. */ | |
256 | complain_overflow_signed, /* Complain_on_overflow. */ | |
257 | coff_mips_reloc, /* Special_function. */ | |
258 | "GPREL", /* Name. */ | |
259 | TRUE, /* Partial_inplace. */ | |
260 | 0xffff, /* Src_mask. */ | |
261 | 0xffff, /* Dst_mask. */ | |
262 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
263 | |
264 | /* A reference to a literal using an offset from the gp register. | |
265 | Handled by the function mips_gprel_reloc. */ | |
7920ce38 NC |
266 | HOWTO (MIPS_R_LITERAL, /* Type. */ |
267 | 0, /* Rightshift. */ | |
268 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
269 | 16, /* Bitsize. */ | |
270 | FALSE, /* PC_relative. */ | |
271 | 0, /* Bitpos. */ | |
272 | complain_overflow_signed, /* Complain_on_overflow. */ | |
273 | coff_mips_reloc, /* Special_function. */ | |
274 | "LITERAL", /* Name. */ | |
275 | TRUE, /* Partial_inplace. */ | |
276 | 0xffff, /* Src_mask. */ | |
277 | 0xffff, /* Dst_mask. */ | |
278 | FALSE), /* Pcrel_offset. */ | |
17505c5c | 279 | |
86033394 NC |
280 | EMPTY_HOWTO (8), |
281 | EMPTY_HOWTO (9), | |
282 | EMPTY_HOWTO (10), | |
283 | EMPTY_HOWTO (11), | |
284 | EMPTY_HOWTO (12), | |
285 | EMPTY_HOWTO (13), | |
286 | EMPTY_HOWTO (14), | |
287 | EMPTY_HOWTO (15), | |
288 | EMPTY_HOWTO (16), | |
289 | EMPTY_HOWTO (17), | |
290 | EMPTY_HOWTO (18), | |
291 | EMPTY_HOWTO (19), | |
292 | EMPTY_HOWTO (20), | |
293 | EMPTY_HOWTO (21), | |
294 | EMPTY_HOWTO (22), | |
295 | EMPTY_HOWTO (23), | |
296 | EMPTY_HOWTO (24), | |
297 | EMPTY_HOWTO (25), | |
298 | EMPTY_HOWTO (26), | |
299 | EMPTY_HOWTO (27), | |
300 | EMPTY_HOWTO (28), | |
301 | EMPTY_HOWTO (29), | |
302 | EMPTY_HOWTO (30), | |
303 | EMPTY_HOWTO (31), | |
304 | EMPTY_HOWTO (32), | |
305 | EMPTY_HOWTO (33), | |
7920ce38 NC |
306 | HOWTO (MIPS_R_RVA, /* Type. */ |
307 | 0, /* Rightshift. */ | |
308 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
309 | 32, /* Bitsize. */ | |
310 | FALSE, /* PC_relative. */ | |
311 | 0, /* Bitpos. */ | |
312 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
313 | coff_mips_reloc, /* Special_function. */ | |
314 | "rva32", /* Name. */ | |
315 | TRUE, /* Partial_inplace. */ | |
316 | 0xffffffff, /* Src_mask. */ | |
317 | 0xffffffff, /* Dst_mask. */ | |
318 | FALSE), /* Pcrel_offset. */ | |
86033394 NC |
319 | EMPTY_HOWTO (35), |
320 | EMPTY_HOWTO (36), | |
7920ce38 NC |
321 | HOWTO (MIPS_R_PAIR, /* Type. */ |
322 | 0, /* Rightshift. */ | |
323 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
324 | 32, /* Bitsize. */ | |
325 | FALSE, /* PC_relative. */ | |
326 | 0, /* Bitpos. */ | |
327 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
328 | coff_mips_reloc, /* Special_function. */ | |
329 | "PAIR", /* Name. */ | |
330 | TRUE, /* Partial_inplace. */ | |
331 | 0xffffffff, /* Src_mask. */ | |
332 | 0xffffffff, /* Dst_mask. */ | |
333 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
334 | }; |
335 | ||
7920ce38 NC |
336 | /* Turn a howto into a reloc nunmber. */ |
337 | ||
338 | #define SELECT_RELOC(x, howto) { x.r_type = howto->type; } | |
339 | #define BADMAG(x) MIPSBADMAG (x) | |
17505c5c | 340 | |
7920ce38 NC |
341 | /* Customize coffcode.h. */ |
342 | #define MIPS 1 | |
17505c5c NC |
343 | |
344 | #define RTYPE2HOWTO(cache_ptr, dst) \ | |
345 | (cache_ptr)->howto = howto_table + (dst)->r_type; | |
346 | ||
347 | /* Compute the addend of a reloc. If the reloc is to a common symbol, | |
348 | the object file contains the value of the common symbol. By the | |
349 | time this is called, the linker may be using a different symbol | |
350 | from a different object file with a different value. Therefore, we | |
351 | hack wildly to locate the original symbol from this file so that we | |
352 | can make the correct adjustment. This macro sets coffsym to the | |
353 | symbol from the original file, and uses it to set the addend value | |
354 | correctly. If this is not a common symbol, the usual addend | |
355 | calculation is done, except that an additional tweak is needed for | |
356 | PC relative relocs. | |
357 | FIXME: This macro refers to symbols and asect; these are from the | |
358 | calling function, not the macro arguments. */ | |
359 | ||
360 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ | |
361 | { \ | |
7920ce38 | 362 | coff_symbol_type *coffsym = NULL; \ |
17505c5c NC |
363 | if (ptr && bfd_asymbol_bfd (ptr) != abfd) \ |
364 | coffsym = (obj_symbols (abfd) \ | |
365 | + (cache_ptr->sym_ptr_ptr - symbols)); \ | |
366 | else if (ptr) \ | |
367 | coffsym = coff_symbol_from (abfd, ptr); \ | |
7920ce38 | 368 | if (coffsym != NULL \ |
17505c5c NC |
369 | && coffsym->native->u.syment.n_scnum == 0) \ |
370 | cache_ptr->addend = - coffsym->native->u.syment.n_value; \ | |
371 | else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ | |
7920ce38 | 372 | && ptr->section != NULL) \ |
17505c5c NC |
373 | cache_ptr->addend = - (ptr->section->vma + ptr->value); \ |
374 | else \ | |
375 | cache_ptr->addend = 0; \ | |
376 | if (ptr && howto_table[reloc.r_type].pc_relative) \ | |
377 | cache_ptr->addend += asect->vma; \ | |
378 | } | |
379 | ||
17505c5c NC |
380 | /* Convert an rtype to howto for the COFF backend linker. */ |
381 | ||
382 | static reloc_howto_type * | |
7920ce38 NC |
383 | coff_mips_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
384 | asection *sec, | |
385 | struct internal_reloc *rel, | |
386 | struct coff_link_hash_entry *h, | |
387 | struct internal_syment *sym, | |
388 | bfd_vma *addendp) | |
17505c5c NC |
389 | { |
390 | ||
391 | reloc_howto_type *howto; | |
392 | ||
393 | howto = howto_table + rel->r_type; | |
394 | ||
395 | #ifdef COFF_WITH_PE | |
396 | *addendp = 0; | |
397 | #endif | |
398 | ||
399 | if (howto->pc_relative) | |
400 | *addendp += sec->vma; | |
401 | ||
402 | if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0) | |
403 | { | |
404 | /* This is a common symbol. The section contents include the | |
405 | size (sym->n_value) as an addend. The relocate_section | |
406 | function will be adding in the final value of the symbol. We | |
407 | need to subtract out the current size in order to get the | |
408 | correct result. */ | |
892339ee | 409 | |
17505c5c NC |
410 | BFD_ASSERT (h != NULL); |
411 | ||
412 | #ifndef COFF_WITH_PE | |
413 | /* I think we *do* want to bypass this. If we don't, I have | |
414 | seen some data parameters get the wrong relocation address. | |
415 | If I link two versions with and without this section bypassed | |
416 | and then do a binary comparison, the addresses which are | |
417 | different can be looked up in the map. The case in which | |
418 | this section has been bypassed has addresses which correspond | |
419 | to values I can find in the map. */ | |
420 | *addendp -= sym->n_value; | |
421 | #endif | |
422 | } | |
423 | ||
424 | #ifndef COFF_WITH_PE | |
425 | /* If the output symbol is common (in which case this must be a | |
1049f94e | 426 | relocatable link), we need to add in the final size of the |
17505c5c | 427 | common symbol. */ |
892339ee | 428 | if (h != NULL && h->root.type == bfd_link_hash_common) |
17505c5c NC |
429 | *addendp += h->root.u.c.size; |
430 | #endif | |
431 | ||
432 | #ifdef COFF_WITH_PE | |
433 | if (howto->pc_relative) | |
434 | { | |
435 | *addendp -= 4; | |
436 | ||
437 | /* If the symbol is defined, then the generic code is going to | |
438 | add back the symbol value in order to cancel out an | |
439 | adjustment it made to the addend. However, we set the addend | |
440 | to 0 at the start of this function. We need to adjust here, | |
441 | to avoid the adjustment the generic code will make. FIXME: | |
442 | This is getting a bit hackish. */ | |
443 | if (sym != NULL && sym->n_scnum != 0) | |
444 | *addendp -= sym->n_value; | |
445 | } | |
446 | ||
447 | if (rel->r_type == MIPS_R_RVA) | |
7920ce38 | 448 | *addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase; |
17505c5c NC |
449 | #endif |
450 | ||
451 | return howto; | |
452 | } | |
453 | ||
7920ce38 NC |
454 | #define coff_rtype_to_howto coff_mips_rtype_to_howto |
455 | #define coff_bfd_reloc_type_lookup coff_mips_reloc_type_lookup | |
157090f7 | 456 | #define coff_bfd_reloc_name_lookup coff_mips_reloc_name_lookup |
17505c5c | 457 | |
17505c5c NC |
458 | /* Get the howto structure for a generic reloc type. */ |
459 | ||
460 | static reloc_howto_type * | |
7920ce38 NC |
461 | coff_mips_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
462 | bfd_reloc_code_real_type code) | |
17505c5c NC |
463 | { |
464 | int mips_type; | |
465 | ||
466 | switch (code) | |
467 | { | |
468 | case BFD_RELOC_16: | |
469 | mips_type = MIPS_R_REFHALF; | |
470 | break; | |
471 | case BFD_RELOC_32: | |
472 | case BFD_RELOC_CTOR: | |
473 | mips_type = MIPS_R_REFWORD; | |
474 | break; | |
475 | case BFD_RELOC_MIPS_JMP: | |
476 | mips_type = MIPS_R_JMPADDR; | |
477 | break; | |
478 | case BFD_RELOC_HI16_S: | |
479 | mips_type = MIPS_R_REFHI; | |
480 | break; | |
481 | case BFD_RELOC_LO16: | |
482 | mips_type = MIPS_R_REFLO; | |
483 | break; | |
cdf6fd85 | 484 | case BFD_RELOC_GPREL16: |
17505c5c NC |
485 | mips_type = MIPS_R_GPREL; |
486 | break; | |
487 | case BFD_RELOC_MIPS_LITERAL: | |
488 | mips_type = MIPS_R_LITERAL; | |
489 | break; | |
17505c5c NC |
490 | case BFD_RELOC_RVA: |
491 | mips_type = MIPS_R_RVA; | |
492 | break; | |
493 | default: | |
7920ce38 | 494 | return NULL; |
17505c5c NC |
495 | } |
496 | ||
7920ce38 | 497 | return & howto_table [mips_type]; |
17505c5c NC |
498 | } |
499 | ||
157090f7 AM |
500 | static reloc_howto_type * |
501 | coff_mips_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
502 | const char *r_name) | |
503 | { | |
504 | unsigned int i; | |
505 | ||
506 | for (i = 0; | |
507 | i < sizeof (howto_table) / sizeof (howto_table[0]); | |
508 | i++) | |
509 | if (howto_table[i].name != NULL | |
510 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
511 | return &howto_table[i]; | |
512 | ||
513 | return NULL; | |
514 | } | |
515 | ||
17505c5c | 516 | static void |
7920ce38 | 517 | mips_swap_reloc_in (bfd * abfd, void * src, void * dst) |
17505c5c NC |
518 | { |
519 | static struct internal_reloc pair_prev; | |
520 | RELOC *reloc_src = (RELOC *) src; | |
521 | struct internal_reloc *reloc_dst = (struct internal_reloc *) dst; | |
522 | ||
dc810e39 AM |
523 | reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr); |
524 | reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx); | |
525 | reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type); | |
17505c5c NC |
526 | reloc_dst->r_size = 0; |
527 | reloc_dst->r_extern = 0; | |
528 | reloc_dst->r_offset = 0; | |
529 | ||
530 | switch (reloc_dst->r_type) | |
531 | { | |
532 | case MIPS_R_REFHI: | |
533 | pair_prev = *reloc_dst; | |
534 | break; | |
535 | case MIPS_R_PAIR: | |
536 | reloc_dst->r_offset = reloc_dst->r_symndx; | |
537 | if (reloc_dst->r_offset & 0x8000) | |
538 | reloc_dst->r_offset -= 0x10000; | |
17505c5c NC |
539 | reloc_dst->r_symndx = pair_prev.r_symndx; |
540 | break; | |
541 | } | |
542 | } | |
543 | ||
544 | static unsigned int | |
7920ce38 | 545 | mips_swap_reloc_out (bfd * abfd, void * src, void * dst) |
17505c5c NC |
546 | { |
547 | static int prev_offset = 1; | |
548 | static bfd_vma prev_addr = 0; | |
549 | struct internal_reloc *reloc_src = (struct internal_reloc *)src; | |
550 | struct external_reloc *reloc_dst = (struct external_reloc *)dst; | |
551 | ||
552 | switch (reloc_src->r_type) | |
553 | { | |
554 | case MIPS_R_REFHI: | |
555 | prev_addr = reloc_src->r_vaddr; | |
556 | prev_offset = reloc_src->r_offset; | |
557 | break; | |
558 | case MIPS_R_REFLO: | |
559 | if (reloc_src->r_vaddr == prev_addr) | |
560 | { | |
561 | /* FIXME: only slightly hackish. If we see a REFLO pointing to | |
562 | the same address as a REFHI, we assume this is the matching | |
563 | PAIR reloc and output it accordingly. The symndx is really | |
564 | the low 16 bits of the addend */ | |
dc810e39 AM |
565 | H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr); |
566 | H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx); | |
567 | H_PUT_16 (abfd, MIPS_R_PAIR, reloc_dst->r_type); | |
17505c5c NC |
568 | return RELSZ; |
569 | } | |
570 | break; | |
571 | } | |
572 | ||
dc810e39 AM |
573 | H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr); |
574 | H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx); | |
17505c5c | 575 | |
dc810e39 | 576 | H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type); |
17505c5c NC |
577 | return RELSZ; |
578 | } | |
579 | ||
7920ce38 NC |
580 | #define coff_swap_reloc_in mips_swap_reloc_in |
581 | #define coff_swap_reloc_out mips_swap_reloc_out | |
17505c5c NC |
582 | #define NO_COFF_RELOCS |
583 | ||
b34976b6 | 584 | static bfd_boolean |
7920ce38 NC |
585 | coff_pe_mips_relocate_section (bfd *output_bfd, |
586 | struct bfd_link_info *info, | |
587 | bfd *input_bfd, | |
588 | asection *input_section, | |
589 | bfd_byte *contents, | |
590 | struct internal_reloc *relocs, | |
591 | struct internal_syment *syms, | |
592 | asection **sections) | |
17505c5c | 593 | { |
17505c5c | 594 | bfd_vma gp; |
b34976b6 | 595 | bfd_boolean gp_undefined; |
17505c5c | 596 | size_t adjust; |
17505c5c NC |
597 | struct internal_reloc *rel; |
598 | struct internal_reloc *rel_end; | |
599 | unsigned int i; | |
b34976b6 | 600 | bfd_boolean got_lo; |
17505c5c | 601 | |
1049f94e | 602 | if (info->relocatable) |
7920ce38 NC |
603 | { |
604 | (*_bfd_error_handler) | |
605 | (_("%B: `ld -r' not supported with PE MIPS objects\n"), input_bfd); | |
606 | bfd_set_error (bfd_error_bad_value); | |
607 | return FALSE; | |
608 | } | |
17505c5c NC |
609 | |
610 | BFD_ASSERT (input_bfd->xvec->byteorder | |
611 | == output_bfd->xvec->byteorder); | |
612 | ||
17505c5c | 613 | gp = _bfd_get_gp_value (output_bfd); |
7920ce38 | 614 | gp_undefined = (gp == 0) ? TRUE : FALSE; |
b34976b6 | 615 | got_lo = FALSE; |
17505c5c | 616 | adjust = 0; |
17505c5c NC |
617 | rel = relocs; |
618 | rel_end = rel + input_section->reloc_count; | |
7920ce38 | 619 | |
17505c5c NC |
620 | for (i = 0; rel < rel_end; rel++, i++) |
621 | { | |
622 | long symndx; | |
623 | struct coff_link_hash_entry *h; | |
624 | struct internal_syment *sym; | |
625 | bfd_vma addend = 0; | |
626 | bfd_vma val, tmp, targ, src, low; | |
627 | reloc_howto_type *howto; | |
17505c5c NC |
628 | unsigned char *mem = contents + rel->r_vaddr; |
629 | ||
630 | symndx = rel->r_symndx; | |
631 | ||
632 | if (symndx == -1) | |
633 | { | |
634 | h = NULL; | |
635 | sym = NULL; | |
636 | } | |
637 | else | |
892339ee | 638 | { |
17505c5c NC |
639 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
640 | sym = syms + symndx; | |
641 | } | |
642 | ||
643 | /* COFF treats common symbols in one of two ways. Either the | |
644 | size of the symbol is included in the section contents, or it | |
645 | is not. We assume that the size is not included, and force | |
646 | the rtype_to_howto function to adjust the addend as needed. */ | |
647 | ||
648 | if (sym != NULL && sym->n_scnum != 0) | |
649 | addend = - sym->n_value; | |
650 | else | |
651 | addend = 0; | |
652 | ||
17505c5c NC |
653 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
654 | sym, &addend); | |
655 | if (howto == NULL) | |
b34976b6 | 656 | return FALSE; |
17505c5c | 657 | |
1049f94e | 658 | /* If we are doing a relocatable link, then we can just ignore |
17505c5c | 659 | a PC relative reloc that is pcrel_offset. It will already |
1049f94e | 660 | have the correct value. If this is not a relocatable link, |
17505c5c NC |
661 | then we should ignore the symbol value. */ |
662 | if (howto->pc_relative && howto->pcrel_offset) | |
663 | { | |
1049f94e | 664 | if (info->relocatable) |
17505c5c NC |
665 | continue; |
666 | if (sym != NULL && sym->n_scnum != 0) | |
667 | addend += sym->n_value; | |
668 | } | |
669 | ||
670 | val = 0; | |
671 | ||
672 | if (h == NULL) | |
673 | { | |
674 | asection *sec; | |
675 | ||
676 | if (symndx == -1) | |
677 | { | |
678 | sec = bfd_abs_section_ptr; | |
679 | val = 0; | |
680 | } | |
681 | else | |
682 | { | |
683 | sec = sections[symndx]; | |
684 | val = (sec->output_section->vma | |
685 | + sec->output_offset | |
686 | + sym->n_value); | |
687 | if (! obj_pe (input_bfd)) | |
688 | val -= sec->vma; | |
689 | } | |
690 | } | |
691 | else | |
692 | { | |
693 | if (h->root.type == bfd_link_hash_defined | |
694 | || h->root.type == bfd_link_hash_defweak) | |
695 | { | |
696 | asection *sec; | |
697 | ||
698 | sec = h->root.u.def.section; | |
699 | val = (h->root.u.def.value | |
700 | + sec->output_section->vma | |
701 | + sec->output_offset); | |
702 | } | |
703 | ||
1049f94e | 704 | else if (! info->relocatable) |
17505c5c NC |
705 | { |
706 | if (! ((*info->callbacks->undefined_symbol) | |
707 | (info, h->root.root.string, input_bfd, input_section, | |
b34976b6 AM |
708 | rel->r_vaddr - input_section->vma, TRUE))) |
709 | return FALSE; | |
17505c5c NC |
710 | } |
711 | } | |
712 | ||
713 | src = rel->r_vaddr + input_section->output_section->vma | |
714 | + input_section->output_offset; | |
17505c5c NC |
715 | |
716 | /* OK, at this point the following variables are set up: | |
717 | src = VMA of the memory we're fixing up | |
718 | mem = pointer to memory we're fixing up | |
7920ce38 | 719 | val = VMA of what we need to refer to. */ |
17505c5c | 720 | |
d003868e AM |
721 | #define UI(x) (*_bfd_error_handler) (_("%B: unimplemented %s\n"), \ |
722 | input_bfd, x); \ | |
17505c5c NC |
723 | bfd_set_error (bfd_error_bad_value); |
724 | ||
725 | switch (rel->r_type) | |
726 | { | |
727 | case MIPS_R_ABSOLUTE: | |
7920ce38 | 728 | /* Ignore these. */ |
17505c5c NC |
729 | break; |
730 | ||
731 | case MIPS_R_REFHALF: | |
7920ce38 | 732 | UI ("refhalf"); |
17505c5c NC |
733 | break; |
734 | ||
735 | case MIPS_R_REFWORD: | |
7920ce38 | 736 | tmp = bfd_get_32 (input_bfd, mem); |
892339ee | 737 | /* printf ("refword: src=%08x targ=%08x+%08x\n", src, tmp, val); */ |
17505c5c | 738 | tmp += val; |
7920ce38 | 739 | bfd_put_32 (input_bfd, tmp, mem); |
17505c5c NC |
740 | break; |
741 | ||
742 | case MIPS_R_JMPADDR: | |
7920ce38 NC |
743 | tmp = bfd_get_32 (input_bfd, mem); |
744 | targ = val + (tmp & 0x03ffffff) * 4; | |
86033394 | 745 | if ((src & 0xf0000000) != (targ & 0xf0000000)) |
17505c5c | 746 | { |
d003868e | 747 | (*_bfd_error_handler) (_("%B: jump too far away\n"), input_bfd); |
17505c5c | 748 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 749 | return FALSE; |
17505c5c NC |
750 | } |
751 | tmp &= 0xfc000000; | |
7920ce38 NC |
752 | tmp |= (targ / 4) & 0x3ffffff; |
753 | bfd_put_32 (input_bfd, tmp, mem); | |
17505c5c NC |
754 | break; |
755 | ||
756 | case MIPS_R_REFHI: | |
7920ce38 | 757 | tmp = bfd_get_32 (input_bfd, mem); |
17505c5c NC |
758 | switch (rel[1].r_type) |
759 | { | |
760 | case MIPS_R_PAIR: | |
761 | /* MS PE object */ | |
762 | targ = val + rel[1].r_offset + ((tmp & 0xffff) << 16); | |
763 | break; | |
764 | case MIPS_R_REFLO: | |
765 | /* GNU COFF object */ | |
7920ce38 | 766 | low = bfd_get_32 (input_bfd, contents + rel[1].r_vaddr); |
17505c5c NC |
767 | low &= 0xffff; |
768 | if (low & 0x8000) | |
769 | low -= 0x10000; | |
770 | targ = val + low + ((tmp & 0xffff) << 16); | |
771 | break; | |
772 | default: | |
d003868e AM |
773 | (*_bfd_error_handler) (_("%B: bad pair/reflo after refhi\n"), |
774 | input_bfd); | |
17505c5c | 775 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 776 | return FALSE; |
17505c5c NC |
777 | } |
778 | tmp &= 0xffff0000; | |
779 | tmp |= (targ >> 16) & 0xffff; | |
7920ce38 | 780 | bfd_put_32 (input_bfd, tmp, mem); |
17505c5c NC |
781 | break; |
782 | ||
783 | case MIPS_R_REFLO: | |
7920ce38 | 784 | tmp = bfd_get_32 (input_bfd, mem); |
17505c5c | 785 | targ = val + (tmp & 0xffff); |
892339ee | 786 | /* printf ("refword: src=%08x targ=%08x\n", src, targ); */ |
17505c5c NC |
787 | tmp &= 0xffff0000; |
788 | tmp |= targ & 0xffff; | |
7920ce38 | 789 | bfd_put_32 (input_bfd, tmp, mem); |
17505c5c NC |
790 | break; |
791 | ||
792 | case MIPS_R_GPREL: | |
793 | case MIPS_R_LITERAL: | |
7920ce38 | 794 | UI ("gprel"); |
17505c5c NC |
795 | break; |
796 | ||
797 | case MIPS_R_SECTION: | |
7920ce38 | 798 | UI ("section"); |
17505c5c NC |
799 | break; |
800 | ||
801 | case MIPS_R_SECREL: | |
7920ce38 | 802 | UI ("secrel"); |
17505c5c NC |
803 | break; |
804 | ||
805 | case MIPS_R_SECRELLO: | |
7920ce38 | 806 | UI ("secrello"); |
17505c5c NC |
807 | break; |
808 | ||
809 | case MIPS_R_SECRELHI: | |
7920ce38 | 810 | UI ("secrelhi"); |
17505c5c NC |
811 | break; |
812 | ||
813 | case MIPS_R_RVA: | |
814 | tmp = bfd_get_32 (input_bfd, mem); | |
892339ee | 815 | /* printf ("rva: src=%08x targ=%08x+%08x\n", src, tmp, val); */ |
17505c5c | 816 | tmp += val |
86033394 | 817 | - pe_data (input_section->output_section->owner)->pe_opthdr.ImageBase; |
17505c5c NC |
818 | bfd_put_32 (input_bfd, tmp, mem); |
819 | break; | |
820 | ||
821 | case MIPS_R_PAIR: | |
822 | /* ignore these */ | |
823 | break; | |
824 | } | |
825 | } | |
826 | ||
b34976b6 | 827 | return TRUE; |
17505c5c NC |
828 | } |
829 | ||
830 | #define coff_relocate_section coff_pe_mips_relocate_section | |
831 | ||
832 | #ifdef TARGET_UNDERSCORE | |
833 | ||
834 | /* If mips gcc uses underscores for symbol names, then it does not use | |
835 | a leading dot for local labels, so if TARGET_UNDERSCORE is defined | |
836 | we treat all symbols starting with L as local. */ | |
837 | ||
b34976b6 | 838 | static bfd_boolean |
7920ce38 | 839 | coff_mips_is_local_label_name (bfd *abfd, const char *name) |
17505c5c NC |
840 | { |
841 | if (name[0] == 'L') | |
b34976b6 | 842 | return TRUE; |
17505c5c NC |
843 | |
844 | return _bfd_coff_is_local_label_name (abfd, name); | |
845 | } | |
846 | ||
847 | #define coff_bfd_is_local_label_name coff_mips_is_local_label_name | |
848 | ||
849 | #endif /* TARGET_UNDERSCORE */ | |
850 | ||
851 | #define COFF_NO_HACK_SCNHDR_SIZE | |
852 | ||
853 | #include "coffcode.h" | |
854 | ||
855 | const bfd_target | |
856 | #ifdef TARGET_SYM | |
857 | TARGET_SYM = | |
858 | #else | |
859 | mipslpe_vec = | |
860 | #endif | |
861 | { | |
862 | #ifdef TARGET_NAME | |
863 | TARGET_NAME, | |
864 | #else | |
7920ce38 | 865 | "pe-mips", /* Name. */ |
17505c5c NC |
866 | #endif |
867 | bfd_target_coff_flavour, | |
7920ce38 NC |
868 | BFD_ENDIAN_LITTLE, /* Data byte order is little. */ |
869 | BFD_ENDIAN_LITTLE, /* Header byte order is little. */ | |
17505c5c | 870 | |
7920ce38 | 871 | (HAS_RELOC | EXEC_P | /* Object flags. */ |
17505c5c NC |
872 | HAS_LINENO | HAS_DEBUG | |
873 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
874 | ||
875 | #ifndef COFF_WITH_PE | |
7920ce38 | 876 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */ |
17505c5c NC |
877 | | SEC_CODE | SEC_DATA), |
878 | #else | |
7920ce38 | 879 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */ |
17505c5c NC |
880 | | SEC_CODE | SEC_DATA |
881 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), | |
882 | #endif | |
883 | ||
884 | #ifdef TARGET_UNDERSCORE | |
7920ce38 | 885 | TARGET_UNDERSCORE, /* Leading underscore. */ |
17505c5c NC |
886 | #else |
887 | 0, /* leading underscore */ | |
888 | #endif | |
7920ce38 NC |
889 | '/', /* AR_pad_char. */ |
890 | 15, /* AR_max_namelen. */ | |
17505c5c NC |
891 | |
892 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
893 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
7920ce38 | 894 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */ |
17505c5c NC |
895 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
896 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
7920ce38 NC |
897 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */ |
898 | ||
899 | /* Note that we allow an object file to be treated as a core file as well. */ | |
900 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format. */ | |
901 | bfd_generic_archive_p, coff_object_p}, | |
902 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format. */ | |
903 | bfd_false}, | |
904 | {bfd_false, coff_write_object_contents, /* bfd_write_contents. */ | |
905 | _bfd_write_archive_contents, bfd_false}, | |
906 | ||
907 | BFD_JUMP_TABLE_GENERIC (coff), | |
908 | BFD_JUMP_TABLE_COPY (coff), | |
909 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
910 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), | |
911 | BFD_JUMP_TABLE_SYMBOLS (coff), | |
912 | BFD_JUMP_TABLE_RELOCS (coff), | |
913 | BFD_JUMP_TABLE_WRITE (coff), | |
914 | BFD_JUMP_TABLE_LINK (coff), | |
915 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
17505c5c NC |
916 | |
917 | NULL, | |
892339ee | 918 | |
17505c5c NC |
919 | COFF_SWAP_TABLE |
920 | }; |