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, |
2b5c217d NC |
3 | 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008 |
4 | Free Software Foundation, Inc. | |
17505c5c NC |
5 | Modified from coff-i386.c by DJ Delorie, dj@cygnus.com |
6 | ||
7920ce38 | 7 | This file is part of BFD, the Binary File Descriptor library. |
17505c5c | 8 | |
7920ce38 NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
7920ce38 | 12 | (at your option) any later version. |
17505c5c | 13 | |
7920ce38 NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
17505c5c | 18 | |
7920ce38 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
17505c5c NC |
23 | |
24 | #define COFF_WITH_PE | |
25 | #define COFF_LONG_SECTION_NAMES | |
b34976b6 | 26 | #define PCRELOFFSET TRUE |
17505c5c | 27 | |
17505c5c | 28 | #include "sysdep.h" |
3db64b00 | 29 | #include "bfd.h" |
17505c5c | 30 | #include "libbfd.h" |
17505c5c | 31 | #include "coff/mipspe.h" |
17505c5c | 32 | #include "coff/internal.h" |
17505c5c | 33 | #include "coff/pe.h" |
17505c5c NC |
34 | #include "libcoff.h" |
35 | ||
7920ce38 | 36 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2 |
17505c5c NC |
37 | /* The page size is a guess based on ELF. */ |
38 | ||
39 | #define COFF_PAGE_SIZE 0x1000 | |
40 | ||
41 | /* For some reason when using mips COFF the value stored in the .text | |
42 | section for a reference to a common symbol is the value itself plus | |
43 | any desired offset. Ian Taylor, Cygnus Support. */ | |
44 | ||
1049f94e | 45 | /* If we are producing relocatable output, we need to do some |
17505c5c NC |
46 | adjustments to the object file that are not done by the |
47 | bfd_perform_relocation function. This function is called by every | |
48 | reloc type to make any required adjustments. */ | |
49 | ||
50 | static bfd_reloc_status_type | |
7920ce38 NC |
51 | coff_mips_reloc (bfd *abfd, |
52 | arelent *reloc_entry, | |
53 | asymbol *symbol, | |
54 | void * data, | |
55 | asection *input_section ATTRIBUTE_UNUSED, | |
56 | bfd *output_bfd, | |
57 | char **error_message ATTRIBUTE_UNUSED) | |
17505c5c NC |
58 | { |
59 | symvalue diff; | |
60 | ||
7920ce38 | 61 | if (output_bfd == NULL) |
17505c5c NC |
62 | return bfd_reloc_continue; |
63 | ||
64 | if (bfd_is_com_section (symbol->section)) | |
65 | { | |
66 | #ifndef COFF_WITH_PE | |
67 | /* We are relocating a common symbol. The current value in the | |
68 | object file is ORIG + OFFSET, where ORIG is the value of the | |
69 | common symbol as seen by the object file when it was compiled | |
70 | (this may be zero if the symbol was undefined) and OFFSET is | |
71 | the offset into the common symbol (normally zero, but may be | |
72 | non-zero when referring to a field in a common structure). | |
73 | ORIG is the negative of reloc_entry->addend, which is set by | |
74 | the CALC_ADDEND macro below. We want to replace the value in | |
75 | the object file with NEW + OFFSET, where NEW is the value of | |
76 | the common symbol which we are going to put in the final | |
77 | object file. NEW is symbol->value. */ | |
78 | diff = symbol->value + reloc_entry->addend; | |
79 | #else | |
80 | /* In PE mode, we do not offset the common symbol. */ | |
81 | diff = reloc_entry->addend; | |
82 | #endif | |
83 | } | |
84 | else | |
7920ce38 NC |
85 | /* For some reason bfd_perform_relocation always effectively |
86 | ignores the addend for a COFF target when producing | |
87 | relocatable output. This seems to be always wrong for 386 | |
88 | COFF, so we handle the addend here instead. */ | |
89 | diff = reloc_entry->addend; | |
17505c5c | 90 | |
17505c5c NC |
91 | #define DOIT(x) \ |
92 | x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + (diff >> howto->rightshift)) & howto->dst_mask)) | |
93 | ||
94 | if (diff != 0) | |
95 | { | |
96 | reloc_howto_type *howto = reloc_entry->howto; | |
97 | unsigned char *addr = (unsigned char *) data + reloc_entry->address; | |
98 | ||
99 | switch (howto->size) | |
100 | { | |
101 | case 0: | |
102 | { | |
103 | char x = bfd_get_8 (abfd, addr); | |
7920ce38 | 104 | |
17505c5c NC |
105 | DOIT (x); |
106 | bfd_put_8 (abfd, x, addr); | |
107 | } | |
108 | break; | |
109 | ||
110 | case 1: | |
111 | { | |
112 | short x = bfd_get_16 (abfd, addr); | |
7920ce38 | 113 | |
17505c5c | 114 | DOIT (x); |
dc810e39 | 115 | bfd_put_16 (abfd, (bfd_vma) x, addr); |
17505c5c NC |
116 | } |
117 | break; | |
118 | ||
119 | case 2: | |
120 | { | |
121 | long x = bfd_get_32 (abfd, addr); | |
7920ce38 | 122 | |
17505c5c | 123 | DOIT (x); |
dc810e39 | 124 | bfd_put_32 (abfd, (bfd_vma) x, addr); |
17505c5c NC |
125 | } |
126 | break; | |
127 | ||
128 | default: | |
129 | abort (); | |
130 | } | |
131 | } | |
132 | ||
133 | /* Now let bfd_perform_relocation finish everything up. */ | |
134 | return bfd_reloc_continue; | |
135 | } | |
136 | ||
137 | #ifdef COFF_WITH_PE | |
b34976b6 | 138 | /* Return TRUE if this relocation should |
892339ee | 139 | appear in the output .reloc section. */ |
17505c5c | 140 | |
b34976b6 | 141 | static bfd_boolean |
7920ce38 | 142 | in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED, reloc_howto_type *howto) |
17505c5c NC |
143 | { |
144 | return ! howto->pc_relative && howto->type != MIPS_R_RVA; | |
892339ee | 145 | } |
17505c5c NC |
146 | #endif |
147 | ||
148 | #ifndef PCRELOFFSET | |
b34976b6 | 149 | #define PCRELOFFSET FALSE |
17505c5c NC |
150 | #endif |
151 | ||
892339ee | 152 | static reloc_howto_type howto_table[] = |
17505c5c NC |
153 | { |
154 | /* Reloc type 0 is ignored. The reloc reading code ensures that | |
155 | this is a reference to the .abs section, which will cause | |
156 | bfd_perform_relocation to do nothing. */ | |
7920ce38 NC |
157 | HOWTO (MIPS_R_ABSOLUTE, /* Type. */ |
158 | 0, /* Rightshift. */ | |
159 | 0, /* Size (0 = byte, 1 = short, 2 = long). */ | |
160 | 8, /* Bitsize. */ | |
161 | FALSE, /* PC_relative. */ | |
162 | 0, /* Bitpos. */ | |
163 | complain_overflow_dont, /* Complain_on_overflow. */ | |
164 | 0, /* Special_function. */ | |
165 | "IGNORE", /* Name. */ | |
166 | FALSE, /* Partial_inplace. */ | |
167 | 0, /* Src_mask. */ | |
168 | 0, /* Dst_mask. */ | |
169 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
170 | |
171 | /* A 16 bit reference to a symbol, normally from a data section. */ | |
7920ce38 NC |
172 | HOWTO (MIPS_R_REFHALF, /* Type. */ |
173 | 0, /* Rightshift. */ | |
174 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ | |
175 | 16, /* Bitsize. */ | |
176 | FALSE, /* PC_relative. */ | |
177 | 0, /* Bitpos. */ | |
178 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
179 | coff_mips_reloc, /* Special_function. */ | |
180 | "REFHALF", /* Name. */ | |
181 | TRUE, /* Partial_inplace. */ | |
182 | 0xffff, /* Src_mask. */ | |
183 | 0xffff, /* Dst_mask. */ | |
184 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
185 | |
186 | /* A 32 bit reference to a symbol, normally from a data section. */ | |
7920ce38 NC |
187 | HOWTO (MIPS_R_REFWORD, /* Type. */ |
188 | 0, /* Rightshift. */ | |
189 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
190 | 32, /* Bitsize. */ | |
191 | FALSE, /* PC_relative. */ | |
192 | 0, /* Bitpos. */ | |
193 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
194 | coff_mips_reloc, /* Special_function. */ | |
195 | "REFWORD", /* Name. */ | |
196 | TRUE, /* Partial_inplace. */ | |
197 | 0xffffffff, /* Src_mask. */ | |
198 | 0xffffffff, /* Dst_mask. */ | |
199 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
200 | |
201 | /* A 26 bit absolute jump address. */ | |
7920ce38 NC |
202 | HOWTO (MIPS_R_JMPADDR, /* Type. */ |
203 | 2, /* Rightshift. */ | |
204 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
205 | 26, /* Bitsize. */ | |
206 | FALSE, /* PC_relative. */ | |
207 | 0, /* Bitpos. */ | |
208 | complain_overflow_dont, /* Complain_on_overflow. */ | |
17505c5c NC |
209 | /* This needs complex overflow |
210 | detection, because the upper four | |
211 | bits must match the PC. */ | |
7920ce38 NC |
212 | coff_mips_reloc, /* Special_function. */ |
213 | "JMPADDR", /* Name. */ | |
214 | TRUE, /* Partial_inplace. */ | |
215 | 0x3ffffff, /* Src_mask. */ | |
216 | 0x3ffffff, /* Dst_mask. */ | |
217 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
218 | |
219 | /* The high 16 bits of a symbol value. Handled by the function | |
220 | mips_refhi_reloc. */ | |
7920ce38 NC |
221 | HOWTO (MIPS_R_REFHI, /* Type. */ |
222 | 16, /* Rightshift. */ | |
223 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
224 | 16, /* Bitsize. */ | |
225 | FALSE, /* PC_relative. */ | |
226 | 0, /* Bitpos. */ | |
227 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
228 | coff_mips_reloc, /* Special_function. */ | |
229 | "REFHI", /* Name. */ | |
230 | TRUE, /* Partial_inplace. */ | |
231 | 0xffff, /* Src_mask. */ | |
232 | 0xffff, /* Dst_mask. */ | |
233 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
234 | |
235 | /* The low 16 bits of a symbol value. */ | |
7920ce38 NC |
236 | HOWTO (MIPS_R_REFLO, /* Type. */ |
237 | 0, /* Rightshift. */ | |
238 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
239 | 16, /* Bitsize. */ | |
240 | FALSE, /* PC_relative. */ | |
241 | 0, /* Bitpos. */ | |
242 | complain_overflow_dont, /* Complain_on_overflow. */ | |
243 | coff_mips_reloc, /* Special_function. */ | |
244 | "REFLO", /* Name. */ | |
245 | TRUE, /* Partial_inplace. */ | |
246 | 0xffff, /* Src_mask. */ | |
247 | 0xffff, /* Dst_mask. */ | |
248 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
249 | |
250 | /* A reference to an offset from the gp register. Handled by the | |
251 | function mips_gprel_reloc. */ | |
7920ce38 NC |
252 | HOWTO (MIPS_R_GPREL, /* Type. */ |
253 | 0, /* Rightshift. */ | |
254 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
255 | 16, /* Bitsize. */ | |
256 | FALSE, /* PC_relative. */ | |
257 | 0, /* Bitpos. */ | |
258 | complain_overflow_signed, /* Complain_on_overflow. */ | |
259 | coff_mips_reloc, /* Special_function. */ | |
260 | "GPREL", /* Name. */ | |
261 | TRUE, /* Partial_inplace. */ | |
262 | 0xffff, /* Src_mask. */ | |
263 | 0xffff, /* Dst_mask. */ | |
264 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
265 | |
266 | /* A reference to a literal using an offset from the gp register. | |
267 | Handled by the function mips_gprel_reloc. */ | |
7920ce38 NC |
268 | HOWTO (MIPS_R_LITERAL, /* Type. */ |
269 | 0, /* Rightshift. */ | |
270 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
271 | 16, /* Bitsize. */ | |
272 | FALSE, /* PC_relative. */ | |
273 | 0, /* Bitpos. */ | |
274 | complain_overflow_signed, /* Complain_on_overflow. */ | |
275 | coff_mips_reloc, /* Special_function. */ | |
276 | "LITERAL", /* Name. */ | |
277 | TRUE, /* Partial_inplace. */ | |
278 | 0xffff, /* Src_mask. */ | |
279 | 0xffff, /* Dst_mask. */ | |
280 | FALSE), /* Pcrel_offset. */ | |
17505c5c | 281 | |
86033394 NC |
282 | EMPTY_HOWTO (8), |
283 | EMPTY_HOWTO (9), | |
284 | EMPTY_HOWTO (10), | |
285 | EMPTY_HOWTO (11), | |
286 | EMPTY_HOWTO (12), | |
287 | EMPTY_HOWTO (13), | |
288 | EMPTY_HOWTO (14), | |
289 | EMPTY_HOWTO (15), | |
290 | EMPTY_HOWTO (16), | |
291 | EMPTY_HOWTO (17), | |
292 | EMPTY_HOWTO (18), | |
293 | EMPTY_HOWTO (19), | |
294 | EMPTY_HOWTO (20), | |
295 | EMPTY_HOWTO (21), | |
296 | EMPTY_HOWTO (22), | |
297 | EMPTY_HOWTO (23), | |
298 | EMPTY_HOWTO (24), | |
299 | EMPTY_HOWTO (25), | |
300 | EMPTY_HOWTO (26), | |
301 | EMPTY_HOWTO (27), | |
302 | EMPTY_HOWTO (28), | |
303 | EMPTY_HOWTO (29), | |
304 | EMPTY_HOWTO (30), | |
305 | EMPTY_HOWTO (31), | |
306 | EMPTY_HOWTO (32), | |
307 | EMPTY_HOWTO (33), | |
7920ce38 NC |
308 | HOWTO (MIPS_R_RVA, /* Type. */ |
309 | 0, /* Rightshift. */ | |
310 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
311 | 32, /* Bitsize. */ | |
312 | FALSE, /* PC_relative. */ | |
313 | 0, /* Bitpos. */ | |
314 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
315 | coff_mips_reloc, /* Special_function. */ | |
316 | "rva32", /* Name. */ | |
317 | TRUE, /* Partial_inplace. */ | |
318 | 0xffffffff, /* Src_mask. */ | |
319 | 0xffffffff, /* Dst_mask. */ | |
320 | FALSE), /* Pcrel_offset. */ | |
86033394 NC |
321 | EMPTY_HOWTO (35), |
322 | EMPTY_HOWTO (36), | |
7920ce38 NC |
323 | HOWTO (MIPS_R_PAIR, /* Type. */ |
324 | 0, /* Rightshift. */ | |
325 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
326 | 32, /* Bitsize. */ | |
327 | FALSE, /* PC_relative. */ | |
328 | 0, /* Bitpos. */ | |
329 | complain_overflow_bitfield, /* Complain_on_overflow. */ | |
330 | coff_mips_reloc, /* Special_function. */ | |
331 | "PAIR", /* Name. */ | |
332 | TRUE, /* Partial_inplace. */ | |
333 | 0xffffffff, /* Src_mask. */ | |
334 | 0xffffffff, /* Dst_mask. */ | |
335 | FALSE), /* Pcrel_offset. */ | |
17505c5c NC |
336 | }; |
337 | ||
7920ce38 NC |
338 | /* Turn a howto into a reloc nunmber. */ |
339 | ||
340 | #define SELECT_RELOC(x, howto) { x.r_type = howto->type; } | |
341 | #define BADMAG(x) MIPSBADMAG (x) | |
17505c5c | 342 | |
7920ce38 NC |
343 | /* Customize coffcode.h. */ |
344 | #define MIPS 1 | |
17505c5c NC |
345 | |
346 | #define RTYPE2HOWTO(cache_ptr, dst) \ | |
347 | (cache_ptr)->howto = howto_table + (dst)->r_type; | |
348 | ||
349 | /* Compute the addend of a reloc. If the reloc is to a common symbol, | |
350 | the object file contains the value of the common symbol. By the | |
351 | time this is called, the linker may be using a different symbol | |
352 | from a different object file with a different value. Therefore, we | |
353 | hack wildly to locate the original symbol from this file so that we | |
354 | can make the correct adjustment. This macro sets coffsym to the | |
355 | symbol from the original file, and uses it to set the addend value | |
356 | correctly. If this is not a common symbol, the usual addend | |
357 | calculation is done, except that an additional tweak is needed for | |
358 | PC relative relocs. | |
359 | FIXME: This macro refers to symbols and asect; these are from the | |
360 | calling function, not the macro arguments. */ | |
361 | ||
362 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ | |
363 | { \ | |
7920ce38 | 364 | coff_symbol_type *coffsym = NULL; \ |
17505c5c NC |
365 | if (ptr && bfd_asymbol_bfd (ptr) != abfd) \ |
366 | coffsym = (obj_symbols (abfd) \ | |
367 | + (cache_ptr->sym_ptr_ptr - symbols)); \ | |
368 | else if (ptr) \ | |
369 | coffsym = coff_symbol_from (abfd, ptr); \ | |
7920ce38 | 370 | if (coffsym != NULL \ |
17505c5c NC |
371 | && coffsym->native->u.syment.n_scnum == 0) \ |
372 | cache_ptr->addend = - coffsym->native->u.syment.n_value; \ | |
373 | else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ | |
7920ce38 | 374 | && ptr->section != NULL) \ |
17505c5c NC |
375 | cache_ptr->addend = - (ptr->section->vma + ptr->value); \ |
376 | else \ | |
377 | cache_ptr->addend = 0; \ | |
378 | if (ptr && howto_table[reloc.r_type].pc_relative) \ | |
379 | cache_ptr->addend += asect->vma; \ | |
380 | } | |
381 | ||
17505c5c NC |
382 | /* Convert an rtype to howto for the COFF backend linker. */ |
383 | ||
384 | static reloc_howto_type * | |
7920ce38 NC |
385 | coff_mips_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
386 | asection *sec, | |
387 | struct internal_reloc *rel, | |
388 | struct coff_link_hash_entry *h, | |
389 | struct internal_syment *sym, | |
390 | bfd_vma *addendp) | |
17505c5c NC |
391 | { |
392 | ||
393 | reloc_howto_type *howto; | |
394 | ||
395 | howto = howto_table + rel->r_type; | |
396 | ||
397 | #ifdef COFF_WITH_PE | |
398 | *addendp = 0; | |
399 | #endif | |
400 | ||
401 | if (howto->pc_relative) | |
402 | *addendp += sec->vma; | |
403 | ||
404 | if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0) | |
405 | { | |
406 | /* This is a common symbol. The section contents include the | |
407 | size (sym->n_value) as an addend. The relocate_section | |
408 | function will be adding in the final value of the symbol. We | |
409 | need to subtract out the current size in order to get the | |
410 | correct result. */ | |
892339ee | 411 | |
17505c5c NC |
412 | BFD_ASSERT (h != NULL); |
413 | ||
414 | #ifndef COFF_WITH_PE | |
415 | /* I think we *do* want to bypass this. If we don't, I have | |
416 | seen some data parameters get the wrong relocation address. | |
417 | If I link two versions with and without this section bypassed | |
418 | and then do a binary comparison, the addresses which are | |
419 | different can be looked up in the map. The case in which | |
420 | this section has been bypassed has addresses which correspond | |
421 | to values I can find in the map. */ | |
422 | *addendp -= sym->n_value; | |
423 | #endif | |
424 | } | |
425 | ||
426 | #ifndef COFF_WITH_PE | |
427 | /* If the output symbol is common (in which case this must be a | |
1049f94e | 428 | relocatable link), we need to add in the final size of the |
17505c5c | 429 | common symbol. */ |
892339ee | 430 | if (h != NULL && h->root.type == bfd_link_hash_common) |
17505c5c NC |
431 | *addendp += h->root.u.c.size; |
432 | #endif | |
433 | ||
434 | #ifdef COFF_WITH_PE | |
435 | if (howto->pc_relative) | |
436 | { | |
437 | *addendp -= 4; | |
438 | ||
439 | /* If the symbol is defined, then the generic code is going to | |
440 | add back the symbol value in order to cancel out an | |
441 | adjustment it made to the addend. However, we set the addend | |
442 | to 0 at the start of this function. We need to adjust here, | |
443 | to avoid the adjustment the generic code will make. FIXME: | |
444 | This is getting a bit hackish. */ | |
445 | if (sym != NULL && sym->n_scnum != 0) | |
446 | *addendp -= sym->n_value; | |
447 | } | |
448 | ||
449 | if (rel->r_type == MIPS_R_RVA) | |
7920ce38 | 450 | *addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase; |
17505c5c NC |
451 | #endif |
452 | ||
453 | return howto; | |
454 | } | |
455 | ||
7920ce38 NC |
456 | #define coff_rtype_to_howto coff_mips_rtype_to_howto |
457 | #define coff_bfd_reloc_type_lookup coff_mips_reloc_type_lookup | |
157090f7 | 458 | #define coff_bfd_reloc_name_lookup coff_mips_reloc_name_lookup |
17505c5c | 459 | |
17505c5c NC |
460 | /* Get the howto structure for a generic reloc type. */ |
461 | ||
462 | static reloc_howto_type * | |
7920ce38 NC |
463 | coff_mips_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
464 | bfd_reloc_code_real_type code) | |
17505c5c NC |
465 | { |
466 | int mips_type; | |
467 | ||
468 | switch (code) | |
469 | { | |
470 | case BFD_RELOC_16: | |
471 | mips_type = MIPS_R_REFHALF; | |
472 | break; | |
473 | case BFD_RELOC_32: | |
474 | case BFD_RELOC_CTOR: | |
475 | mips_type = MIPS_R_REFWORD; | |
476 | break; | |
477 | case BFD_RELOC_MIPS_JMP: | |
478 | mips_type = MIPS_R_JMPADDR; | |
479 | break; | |
480 | case BFD_RELOC_HI16_S: | |
481 | mips_type = MIPS_R_REFHI; | |
482 | break; | |
483 | case BFD_RELOC_LO16: | |
484 | mips_type = MIPS_R_REFLO; | |
485 | break; | |
cdf6fd85 | 486 | case BFD_RELOC_GPREL16: |
17505c5c NC |
487 | mips_type = MIPS_R_GPREL; |
488 | break; | |
489 | case BFD_RELOC_MIPS_LITERAL: | |
490 | mips_type = MIPS_R_LITERAL; | |
491 | break; | |
17505c5c NC |
492 | case BFD_RELOC_RVA: |
493 | mips_type = MIPS_R_RVA; | |
494 | break; | |
495 | default: | |
7920ce38 | 496 | return NULL; |
17505c5c NC |
497 | } |
498 | ||
7920ce38 | 499 | return & howto_table [mips_type]; |
17505c5c NC |
500 | } |
501 | ||
157090f7 AM |
502 | static reloc_howto_type * |
503 | coff_mips_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
504 | const char *r_name) | |
505 | { | |
506 | unsigned int i; | |
507 | ||
508 | for (i = 0; | |
509 | i < sizeof (howto_table) / sizeof (howto_table[0]); | |
510 | i++) | |
511 | if (howto_table[i].name != NULL | |
512 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
513 | return &howto_table[i]; | |
514 | ||
515 | return NULL; | |
516 | } | |
517 | ||
17505c5c | 518 | static void |
7920ce38 | 519 | mips_swap_reloc_in (bfd * abfd, void * src, void * dst) |
17505c5c NC |
520 | { |
521 | static struct internal_reloc pair_prev; | |
522 | RELOC *reloc_src = (RELOC *) src; | |
523 | struct internal_reloc *reloc_dst = (struct internal_reloc *) dst; | |
524 | ||
dc810e39 AM |
525 | reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr); |
526 | reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx); | |
527 | reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type); | |
17505c5c NC |
528 | reloc_dst->r_size = 0; |
529 | reloc_dst->r_extern = 0; | |
530 | reloc_dst->r_offset = 0; | |
531 | ||
532 | switch (reloc_dst->r_type) | |
533 | { | |
534 | case MIPS_R_REFHI: | |
535 | pair_prev = *reloc_dst; | |
536 | break; | |
537 | case MIPS_R_PAIR: | |
538 | reloc_dst->r_offset = reloc_dst->r_symndx; | |
539 | if (reloc_dst->r_offset & 0x8000) | |
540 | reloc_dst->r_offset -= 0x10000; | |
17505c5c NC |
541 | reloc_dst->r_symndx = pair_prev.r_symndx; |
542 | break; | |
543 | } | |
544 | } | |
545 | ||
546 | static unsigned int | |
7920ce38 | 547 | mips_swap_reloc_out (bfd * abfd, void * src, void * dst) |
17505c5c NC |
548 | { |
549 | static int prev_offset = 1; | |
550 | static bfd_vma prev_addr = 0; | |
551 | struct internal_reloc *reloc_src = (struct internal_reloc *)src; | |
552 | struct external_reloc *reloc_dst = (struct external_reloc *)dst; | |
553 | ||
554 | switch (reloc_src->r_type) | |
555 | { | |
556 | case MIPS_R_REFHI: | |
557 | prev_addr = reloc_src->r_vaddr; | |
558 | prev_offset = reloc_src->r_offset; | |
559 | break; | |
560 | case MIPS_R_REFLO: | |
561 | if (reloc_src->r_vaddr == prev_addr) | |
562 | { | |
563 | /* FIXME: only slightly hackish. If we see a REFLO pointing to | |
564 | the same address as a REFHI, we assume this is the matching | |
565 | PAIR reloc and output it accordingly. The symndx is really | |
566 | the low 16 bits of the addend */ | |
dc810e39 AM |
567 | H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr); |
568 | H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx); | |
569 | H_PUT_16 (abfd, MIPS_R_PAIR, reloc_dst->r_type); | |
17505c5c NC |
570 | return RELSZ; |
571 | } | |
572 | break; | |
573 | } | |
574 | ||
dc810e39 AM |
575 | H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr); |
576 | H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx); | |
17505c5c | 577 | |
dc810e39 | 578 | H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type); |
17505c5c NC |
579 | return RELSZ; |
580 | } | |
581 | ||
7920ce38 NC |
582 | #define coff_swap_reloc_in mips_swap_reloc_in |
583 | #define coff_swap_reloc_out mips_swap_reloc_out | |
17505c5c NC |
584 | #define NO_COFF_RELOCS |
585 | ||
b34976b6 | 586 | static bfd_boolean |
7920ce38 NC |
587 | coff_pe_mips_relocate_section (bfd *output_bfd, |
588 | struct bfd_link_info *info, | |
589 | bfd *input_bfd, | |
590 | asection *input_section, | |
591 | bfd_byte *contents, | |
592 | struct internal_reloc *relocs, | |
593 | struct internal_syment *syms, | |
594 | asection **sections) | |
17505c5c | 595 | { |
17505c5c | 596 | bfd_vma gp; |
b34976b6 | 597 | bfd_boolean gp_undefined; |
17505c5c | 598 | size_t adjust; |
17505c5c NC |
599 | struct internal_reloc *rel; |
600 | struct internal_reloc *rel_end; | |
601 | unsigned int i; | |
b34976b6 | 602 | bfd_boolean got_lo; |
17505c5c | 603 | |
1049f94e | 604 | if (info->relocatable) |
7920ce38 NC |
605 | { |
606 | (*_bfd_error_handler) | |
607 | (_("%B: `ld -r' not supported with PE MIPS objects\n"), input_bfd); | |
608 | bfd_set_error (bfd_error_bad_value); | |
609 | return FALSE; | |
610 | } | |
17505c5c NC |
611 | |
612 | BFD_ASSERT (input_bfd->xvec->byteorder | |
613 | == output_bfd->xvec->byteorder); | |
614 | ||
17505c5c | 615 | gp = _bfd_get_gp_value (output_bfd); |
7920ce38 | 616 | gp_undefined = (gp == 0) ? TRUE : FALSE; |
b34976b6 | 617 | got_lo = FALSE; |
17505c5c | 618 | adjust = 0; |
17505c5c NC |
619 | rel = relocs; |
620 | rel_end = rel + input_section->reloc_count; | |
7920ce38 | 621 | |
17505c5c NC |
622 | for (i = 0; rel < rel_end; rel++, i++) |
623 | { | |
624 | long symndx; | |
625 | struct coff_link_hash_entry *h; | |
626 | struct internal_syment *sym; | |
627 | bfd_vma addend = 0; | |
628 | bfd_vma val, tmp, targ, src, low; | |
629 | reloc_howto_type *howto; | |
17505c5c NC |
630 | unsigned char *mem = contents + rel->r_vaddr; |
631 | ||
632 | symndx = rel->r_symndx; | |
633 | ||
634 | if (symndx == -1) | |
635 | { | |
636 | h = NULL; | |
637 | sym = NULL; | |
638 | } | |
639 | else | |
892339ee | 640 | { |
17505c5c NC |
641 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
642 | sym = syms + symndx; | |
643 | } | |
644 | ||
645 | /* COFF treats common symbols in one of two ways. Either the | |
646 | size of the symbol is included in the section contents, or it | |
647 | is not. We assume that the size is not included, and force | |
648 | the rtype_to_howto function to adjust the addend as needed. */ | |
649 | ||
650 | if (sym != NULL && sym->n_scnum != 0) | |
651 | addend = - sym->n_value; | |
652 | else | |
653 | addend = 0; | |
654 | ||
17505c5c NC |
655 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, |
656 | sym, &addend); | |
657 | if (howto == NULL) | |
b34976b6 | 658 | return FALSE; |
17505c5c | 659 | |
1049f94e | 660 | /* If we are doing a relocatable link, then we can just ignore |
17505c5c | 661 | a PC relative reloc that is pcrel_offset. It will already |
1049f94e | 662 | have the correct value. If this is not a relocatable link, |
17505c5c NC |
663 | then we should ignore the symbol value. */ |
664 | if (howto->pc_relative && howto->pcrel_offset) | |
665 | { | |
1049f94e | 666 | if (info->relocatable) |
17505c5c NC |
667 | continue; |
668 | if (sym != NULL && sym->n_scnum != 0) | |
669 | addend += sym->n_value; | |
670 | } | |
671 | ||
672 | val = 0; | |
673 | ||
674 | if (h == NULL) | |
675 | { | |
676 | asection *sec; | |
677 | ||
678 | if (symndx == -1) | |
679 | { | |
680 | sec = bfd_abs_section_ptr; | |
681 | val = 0; | |
682 | } | |
683 | else | |
684 | { | |
685 | sec = sections[symndx]; | |
686 | val = (sec->output_section->vma | |
687 | + sec->output_offset | |
688 | + sym->n_value); | |
689 | if (! obj_pe (input_bfd)) | |
690 | val -= sec->vma; | |
691 | } | |
692 | } | |
693 | else | |
694 | { | |
695 | if (h->root.type == bfd_link_hash_defined | |
696 | || h->root.type == bfd_link_hash_defweak) | |
697 | { | |
698 | asection *sec; | |
699 | ||
700 | sec = h->root.u.def.section; | |
701 | val = (h->root.u.def.value | |
702 | + sec->output_section->vma | |
703 | + sec->output_offset); | |
704 | } | |
705 | ||
1049f94e | 706 | else if (! info->relocatable) |
17505c5c NC |
707 | { |
708 | if (! ((*info->callbacks->undefined_symbol) | |
709 | (info, h->root.root.string, input_bfd, input_section, | |
b34976b6 AM |
710 | rel->r_vaddr - input_section->vma, TRUE))) |
711 | return FALSE; | |
17505c5c NC |
712 | } |
713 | } | |
714 | ||
715 | src = rel->r_vaddr + input_section->output_section->vma | |
716 | + input_section->output_offset; | |
17505c5c NC |
717 | |
718 | /* OK, at this point the following variables are set up: | |
719 | src = VMA of the memory we're fixing up | |
720 | mem = pointer to memory we're fixing up | |
7920ce38 | 721 | val = VMA of what we need to refer to. */ |
17505c5c | 722 | |
d003868e AM |
723 | #define UI(x) (*_bfd_error_handler) (_("%B: unimplemented %s\n"), \ |
724 | input_bfd, x); \ | |
17505c5c NC |
725 | bfd_set_error (bfd_error_bad_value); |
726 | ||
727 | switch (rel->r_type) | |
728 | { | |
729 | case MIPS_R_ABSOLUTE: | |
7920ce38 | 730 | /* Ignore these. */ |
17505c5c NC |
731 | break; |
732 | ||
733 | case MIPS_R_REFHALF: | |
7920ce38 | 734 | UI ("refhalf"); |
17505c5c NC |
735 | break; |
736 | ||
737 | case MIPS_R_REFWORD: | |
7920ce38 | 738 | tmp = bfd_get_32 (input_bfd, mem); |
892339ee | 739 | /* printf ("refword: src=%08x targ=%08x+%08x\n", src, tmp, val); */ |
17505c5c | 740 | tmp += val; |
7920ce38 | 741 | bfd_put_32 (input_bfd, tmp, mem); |
17505c5c NC |
742 | break; |
743 | ||
744 | case MIPS_R_JMPADDR: | |
7920ce38 NC |
745 | tmp = bfd_get_32 (input_bfd, mem); |
746 | targ = val + (tmp & 0x03ffffff) * 4; | |
86033394 | 747 | if ((src & 0xf0000000) != (targ & 0xf0000000)) |
17505c5c | 748 | { |
d003868e | 749 | (*_bfd_error_handler) (_("%B: jump too far away\n"), input_bfd); |
17505c5c | 750 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 751 | return FALSE; |
17505c5c NC |
752 | } |
753 | tmp &= 0xfc000000; | |
7920ce38 NC |
754 | tmp |= (targ / 4) & 0x3ffffff; |
755 | bfd_put_32 (input_bfd, tmp, mem); | |
17505c5c NC |
756 | break; |
757 | ||
758 | case MIPS_R_REFHI: | |
7920ce38 | 759 | tmp = bfd_get_32 (input_bfd, mem); |
17505c5c NC |
760 | switch (rel[1].r_type) |
761 | { | |
762 | case MIPS_R_PAIR: | |
763 | /* MS PE object */ | |
764 | targ = val + rel[1].r_offset + ((tmp & 0xffff) << 16); | |
765 | break; | |
766 | case MIPS_R_REFLO: | |
767 | /* GNU COFF object */ | |
7920ce38 | 768 | low = bfd_get_32 (input_bfd, contents + rel[1].r_vaddr); |
17505c5c NC |
769 | low &= 0xffff; |
770 | if (low & 0x8000) | |
771 | low -= 0x10000; | |
772 | targ = val + low + ((tmp & 0xffff) << 16); | |
773 | break; | |
774 | default: | |
d003868e AM |
775 | (*_bfd_error_handler) (_("%B: bad pair/reflo after refhi\n"), |
776 | input_bfd); | |
17505c5c | 777 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 778 | return FALSE; |
17505c5c NC |
779 | } |
780 | tmp &= 0xffff0000; | |
781 | tmp |= (targ >> 16) & 0xffff; | |
7920ce38 | 782 | bfd_put_32 (input_bfd, tmp, mem); |
17505c5c NC |
783 | break; |
784 | ||
785 | case MIPS_R_REFLO: | |
7920ce38 | 786 | tmp = bfd_get_32 (input_bfd, mem); |
17505c5c | 787 | targ = val + (tmp & 0xffff); |
892339ee | 788 | /* printf ("refword: src=%08x targ=%08x\n", src, targ); */ |
17505c5c NC |
789 | tmp &= 0xffff0000; |
790 | tmp |= targ & 0xffff; | |
7920ce38 | 791 | bfd_put_32 (input_bfd, tmp, mem); |
17505c5c NC |
792 | break; |
793 | ||
794 | case MIPS_R_GPREL: | |
795 | case MIPS_R_LITERAL: | |
7920ce38 | 796 | UI ("gprel"); |
17505c5c NC |
797 | break; |
798 | ||
799 | case MIPS_R_SECTION: | |
7920ce38 | 800 | UI ("section"); |
17505c5c NC |
801 | break; |
802 | ||
803 | case MIPS_R_SECREL: | |
7920ce38 | 804 | UI ("secrel"); |
17505c5c NC |
805 | break; |
806 | ||
807 | case MIPS_R_SECRELLO: | |
7920ce38 | 808 | UI ("secrello"); |
17505c5c NC |
809 | break; |
810 | ||
811 | case MIPS_R_SECRELHI: | |
7920ce38 | 812 | UI ("secrelhi"); |
17505c5c NC |
813 | break; |
814 | ||
815 | case MIPS_R_RVA: | |
816 | tmp = bfd_get_32 (input_bfd, mem); | |
892339ee | 817 | /* printf ("rva: src=%08x targ=%08x+%08x\n", src, tmp, val); */ |
17505c5c | 818 | tmp += val |
86033394 | 819 | - pe_data (input_section->output_section->owner)->pe_opthdr.ImageBase; |
17505c5c NC |
820 | bfd_put_32 (input_bfd, tmp, mem); |
821 | break; | |
822 | ||
823 | case MIPS_R_PAIR: | |
824 | /* ignore these */ | |
825 | break; | |
826 | } | |
827 | } | |
828 | ||
b34976b6 | 829 | return TRUE; |
17505c5c NC |
830 | } |
831 | ||
832 | #define coff_relocate_section coff_pe_mips_relocate_section | |
833 | ||
834 | #ifdef TARGET_UNDERSCORE | |
835 | ||
836 | /* If mips gcc uses underscores for symbol names, then it does not use | |
837 | a leading dot for local labels, so if TARGET_UNDERSCORE is defined | |
838 | we treat all symbols starting with L as local. */ | |
839 | ||
b34976b6 | 840 | static bfd_boolean |
7920ce38 | 841 | coff_mips_is_local_label_name (bfd *abfd, const char *name) |
17505c5c NC |
842 | { |
843 | if (name[0] == 'L') | |
b34976b6 | 844 | return TRUE; |
17505c5c NC |
845 | |
846 | return _bfd_coff_is_local_label_name (abfd, name); | |
847 | } | |
848 | ||
849 | #define coff_bfd_is_local_label_name coff_mips_is_local_label_name | |
850 | ||
851 | #endif /* TARGET_UNDERSCORE */ | |
852 | ||
853 | #define COFF_NO_HACK_SCNHDR_SIZE | |
854 | ||
2b5c217d NC |
855 | #ifndef bfd_pe_print_pdata |
856 | #define bfd_pe_print_pdata NULL | |
857 | #endif | |
858 | ||
17505c5c NC |
859 | #include "coffcode.h" |
860 | ||
861 | const bfd_target | |
862 | #ifdef TARGET_SYM | |
863 | TARGET_SYM = | |
864 | #else | |
865 | mipslpe_vec = | |
866 | #endif | |
867 | { | |
868 | #ifdef TARGET_NAME | |
869 | TARGET_NAME, | |
870 | #else | |
7920ce38 | 871 | "pe-mips", /* Name. */ |
17505c5c NC |
872 | #endif |
873 | bfd_target_coff_flavour, | |
7920ce38 NC |
874 | BFD_ENDIAN_LITTLE, /* Data byte order is little. */ |
875 | BFD_ENDIAN_LITTLE, /* Header byte order is little. */ | |
17505c5c | 876 | |
7920ce38 | 877 | (HAS_RELOC | EXEC_P | /* Object flags. */ |
17505c5c NC |
878 | HAS_LINENO | HAS_DEBUG | |
879 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
880 | ||
881 | #ifndef COFF_WITH_PE | |
7920ce38 | 882 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */ |
17505c5c NC |
883 | | SEC_CODE | SEC_DATA), |
884 | #else | |
7920ce38 | 885 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */ |
17505c5c NC |
886 | | SEC_CODE | SEC_DATA |
887 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), | |
888 | #endif | |
889 | ||
890 | #ifdef TARGET_UNDERSCORE | |
7920ce38 | 891 | TARGET_UNDERSCORE, /* Leading underscore. */ |
17505c5c NC |
892 | #else |
893 | 0, /* leading underscore */ | |
894 | #endif | |
7920ce38 NC |
895 | '/', /* AR_pad_char. */ |
896 | 15, /* AR_max_namelen. */ | |
17505c5c NC |
897 | |
898 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
899 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
7920ce38 | 900 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */ |
17505c5c NC |
901 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
902 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
7920ce38 NC |
903 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Headers. */ |
904 | ||
905 | /* Note that we allow an object file to be treated as a core file as well. */ | |
906 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format. */ | |
907 | bfd_generic_archive_p, coff_object_p}, | |
908 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format. */ | |
909 | bfd_false}, | |
910 | {bfd_false, coff_write_object_contents, /* bfd_write_contents. */ | |
911 | _bfd_write_archive_contents, bfd_false}, | |
912 | ||
913 | BFD_JUMP_TABLE_GENERIC (coff), | |
914 | BFD_JUMP_TABLE_COPY (coff), | |
915 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
916 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), | |
917 | BFD_JUMP_TABLE_SYMBOLS (coff), | |
918 | BFD_JUMP_TABLE_RELOCS (coff), | |
919 | BFD_JUMP_TABLE_WRITE (coff), | |
920 | BFD_JUMP_TABLE_LINK (coff), | |
921 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
17505c5c NC |
922 | |
923 | NULL, | |
892339ee | 924 | |
17505c5c NC |
925 | COFF_SWAP_TABLE |
926 | }; |