Commit | Line | Data |
---|---|---|
c28b1c28 | 1 | /* BFD back-end for Intel i860 COFF files. |
d003868e | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000, 2001, 2002, |
157090f7 | 3 | 2003, 2004, 2005, 2007 Free Software Foundation, Inc. |
252b5132 RH |
4 | Created mostly by substituting "860" for "386" in coff-i386.c |
5 | Harry Dolan <dolan@ssd.intel.com>, October 1995 | |
6 | ||
cd123cb7 | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
cd123cb7 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 | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
252b5132 | 13 | |
cd123cb7 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. | |
252b5132 | 18 | |
cd123cb7 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 | |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
22 | MA 02110-1301, USA. */ | |
252b5132 | 23 | |
252b5132 | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
252b5132 RH |
26 | #include "libbfd.h" |
27 | ||
28 | #include "coff/i860.h" | |
29 | ||
30 | #include "coff/internal.h" | |
31 | ||
32 | #include "libcoff.h" | |
33 | ||
252b5132 RH |
34 | |
35 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) | |
36 | /* The page size is a guess based on ELF. */ | |
37 | ||
38 | #define COFF_PAGE_SIZE 0x1000 | |
39 | ||
40 | /* For some reason when using i860 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. */ | |
43 | ||
1049f94e | 44 | /* If we are producing relocatable output, we need to do some |
252b5132 RH |
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. */ | |
48 | ||
49 | static bfd_reloc_status_type | |
a62d170c JE |
50 | coff_i860_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) | |
252b5132 RH |
57 | { |
58 | symvalue diff; | |
59 | ||
60 | if (output_bfd == (bfd *) NULL) | |
61 | return bfd_reloc_continue; | |
62 | ||
252b5132 RH |
63 | if (bfd_is_com_section (symbol->section)) |
64 | { | |
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 | } | |
78 | else | |
79 | { | |
80 | /* For some reason bfd_perform_relocation always effectively | |
81 | ignores the addend for a COFF target when producing | |
1049f94e | 82 | relocatable output. This seems to be always wrong for 860 |
252b5132 RH |
83 | COFF, so we handle the addend here instead. */ |
84 | diff = reloc_entry->addend; | |
85 | } | |
86 | ||
252b5132 RH |
87 | #define DOIT(x) \ |
88 | x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask)) | |
89 | ||
90 | if (diff != 0) | |
91 | { | |
92 | reloc_howto_type *howto = reloc_entry->howto; | |
93 | unsigned char *addr = (unsigned char *) data + reloc_entry->address; | |
94 | ||
95 | switch (howto->size) | |
96 | { | |
97 | case 0: | |
98 | { | |
99 | char x = bfd_get_8 (abfd, addr); | |
100 | DOIT (x); | |
101 | bfd_put_8 (abfd, x, addr); | |
102 | } | |
103 | break; | |
104 | ||
105 | case 1: | |
106 | { | |
107 | short x = bfd_get_16 (abfd, addr); | |
108 | DOIT (x); | |
dc810e39 | 109 | bfd_put_16 (abfd, (bfd_vma) x, addr); |
252b5132 RH |
110 | } |
111 | break; | |
112 | ||
113 | case 2: | |
114 | { | |
115 | long x = bfd_get_32 (abfd, addr); | |
116 | DOIT (x); | |
dc810e39 | 117 | bfd_put_32 (abfd, (bfd_vma) x, addr); |
252b5132 RH |
118 | } |
119 | break; | |
120 | ||
121 | default: | |
122 | abort (); | |
123 | } | |
124 | } | |
125 | ||
126 | /* Now let bfd_perform_relocation finish everything up. */ | |
127 | return bfd_reloc_continue; | |
128 | } | |
129 | ||
c28b1c28 JE |
130 | /* This is just a temporary measure until we teach bfd to generate |
131 | these relocations. */ | |
132 | ||
133 | static bfd_reloc_status_type | |
134 | coff_i860_reloc_nyi (bfd *abfd ATTRIBUTE_UNUSED, | |
135 | arelent *reloc_entry, | |
136 | asymbol *symbol ATTRIBUTE_UNUSED, | |
137 | void *data ATTRIBUTE_UNUSED, | |
138 | asection *input_section ATTRIBUTE_UNUSED, | |
139 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
140 | char **error_message ATTRIBUTE_UNUSED) | |
141 | { | |
142 | reloc_howto_type *howto = reloc_entry->howto; | |
143 | fprintf (stderr, _("Relocation `%s' not yet implemented\n"), howto->name); | |
1a101a42 | 144 | return bfd_reloc_notsupported; |
c28b1c28 JE |
145 | } |
146 | ||
252b5132 | 147 | #ifndef PCRELOFFSET |
b34976b6 | 148 | #define PCRELOFFSET FALSE |
252b5132 RH |
149 | #endif |
150 | ||
5fcfd273 | 151 | static reloc_howto_type howto_table[] = |
252b5132 | 152 | { |
5f771d47 ILT |
153 | EMPTY_HOWTO (0), |
154 | EMPTY_HOWTO (1), | |
155 | EMPTY_HOWTO (2), | |
156 | EMPTY_HOWTO (3), | |
157 | EMPTY_HOWTO (4), | |
158 | EMPTY_HOWTO (5), | |
5fcfd273 KH |
159 | HOWTO (R_DIR32, /* type */ |
160 | 0, /* rightshift */ | |
161 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
162 | 32, /* bitsize */ | |
b34976b6 | 163 | FALSE, /* pc_relative */ |
5fcfd273 | 164 | 0, /* bitpos */ |
252b5132 | 165 | complain_overflow_bitfield, /* complain_on_overflow */ |
5fcfd273 KH |
166 | coff_i860_reloc, /* special_function */ |
167 | "dir32", /* name */ | |
b34976b6 | 168 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
169 | 0xffffffff, /* src_mask */ |
170 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 171 | TRUE), /* pcrel_offset */ |
252b5132 | 172 | /* {7}, */ |
5fcfd273 KH |
173 | HOWTO (R_IMAGEBASE, /* type */ |
174 | 0, /* rightshift */ | |
175 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
176 | 32, /* bitsize */ | |
b34976b6 | 177 | FALSE, /* pc_relative */ |
5fcfd273 | 178 | 0, /* bitpos */ |
252b5132 | 179 | complain_overflow_bitfield, /* complain_on_overflow */ |
5fcfd273 KH |
180 | coff_i860_reloc, /* special_function */ |
181 | "rva32", /* name */ | |
b34976b6 | 182 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
183 | 0xffffffff, /* src_mask */ |
184 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 185 | FALSE), /* pcrel_offset */ |
5f771d47 ILT |
186 | EMPTY_HOWTO (010), |
187 | EMPTY_HOWTO (011), | |
188 | EMPTY_HOWTO (012), | |
189 | EMPTY_HOWTO (013), | |
190 | EMPTY_HOWTO (014), | |
191 | EMPTY_HOWTO (015), | |
192 | EMPTY_HOWTO (016), | |
5fcfd273 KH |
193 | HOWTO (R_RELBYTE, /* type */ |
194 | 0, /* rightshift */ | |
195 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
196 | 8, /* bitsize */ | |
b34976b6 | 197 | FALSE, /* pc_relative */ |
5fcfd273 | 198 | 0, /* bitpos */ |
252b5132 | 199 | complain_overflow_bitfield, /* complain_on_overflow */ |
5fcfd273 KH |
200 | coff_i860_reloc, /* special_function */ |
201 | "8", /* name */ | |
b34976b6 | 202 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
203 | 0x000000ff, /* src_mask */ |
204 | 0x000000ff, /* dst_mask */ | |
252b5132 | 205 | PCRELOFFSET), /* pcrel_offset */ |
5fcfd273 KH |
206 | HOWTO (R_RELWORD, /* type */ |
207 | 0, /* rightshift */ | |
208 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
209 | 16, /* bitsize */ | |
b34976b6 | 210 | FALSE, /* pc_relative */ |
5fcfd273 | 211 | 0, /* bitpos */ |
252b5132 | 212 | complain_overflow_bitfield, /* complain_on_overflow */ |
5fcfd273 KH |
213 | coff_i860_reloc, /* special_function */ |
214 | "16", /* name */ | |
b34976b6 | 215 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
216 | 0x0000ffff, /* src_mask */ |
217 | 0x0000ffff, /* dst_mask */ | |
252b5132 | 218 | PCRELOFFSET), /* pcrel_offset */ |
5fcfd273 KH |
219 | HOWTO (R_RELLONG, /* type */ |
220 | 0, /* rightshift */ | |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
222 | 32, /* bitsize */ | |
b34976b6 | 223 | FALSE, /* pc_relative */ |
5fcfd273 | 224 | 0, /* bitpos */ |
252b5132 | 225 | complain_overflow_bitfield, /* complain_on_overflow */ |
5fcfd273 KH |
226 | coff_i860_reloc, /* special_function */ |
227 | "32", /* name */ | |
b34976b6 | 228 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
229 | 0xffffffff, /* src_mask */ |
230 | 0xffffffff, /* dst_mask */ | |
252b5132 | 231 | PCRELOFFSET), /* pcrel_offset */ |
5fcfd273 KH |
232 | HOWTO (R_PCRBYTE, /* type */ |
233 | 0, /* rightshift */ | |
234 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
235 | 8, /* bitsize */ | |
b34976b6 | 236 | TRUE, /* pc_relative */ |
5fcfd273 | 237 | 0, /* bitpos */ |
252b5132 | 238 | complain_overflow_signed, /* complain_on_overflow */ |
5fcfd273 KH |
239 | coff_i860_reloc, /* special_function */ |
240 | "DISP8", /* name */ | |
b34976b6 | 241 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
242 | 0x000000ff, /* src_mask */ |
243 | 0x000000ff, /* dst_mask */ | |
252b5132 | 244 | PCRELOFFSET), /* pcrel_offset */ |
5fcfd273 KH |
245 | HOWTO (R_PCRWORD, /* type */ |
246 | 0, /* rightshift */ | |
247 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
248 | 16, /* bitsize */ | |
b34976b6 | 249 | TRUE, /* pc_relative */ |
5fcfd273 | 250 | 0, /* bitpos */ |
252b5132 | 251 | complain_overflow_signed, /* complain_on_overflow */ |
5fcfd273 KH |
252 | coff_i860_reloc, /* special_function */ |
253 | "DISP16", /* name */ | |
b34976b6 | 254 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
255 | 0x0000ffff, /* src_mask */ |
256 | 0x0000ffff, /* dst_mask */ | |
252b5132 | 257 | PCRELOFFSET), /* pcrel_offset */ |
5fcfd273 KH |
258 | HOWTO (R_PCRLONG, /* type */ |
259 | 0, /* rightshift */ | |
260 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
261 | 32, /* bitsize */ | |
b34976b6 | 262 | TRUE, /* pc_relative */ |
5fcfd273 | 263 | 0, /* bitpos */ |
252b5132 | 264 | complain_overflow_signed, /* complain_on_overflow */ |
5fcfd273 KH |
265 | coff_i860_reloc, /* special_function */ |
266 | "DISP32", /* name */ | |
b34976b6 | 267 | TRUE, /* partial_inplace */ |
5fcfd273 KH |
268 | 0xffffffff, /* src_mask */ |
269 | 0xffffffff, /* dst_mask */ | |
c28b1c28 JE |
270 | PCRELOFFSET), /* pcrel_offset */ |
271 | EMPTY_HOWTO (0x15), | |
272 | EMPTY_HOWTO (0x16), | |
273 | EMPTY_HOWTO (0x17), | |
274 | EMPTY_HOWTO (0x18), | |
275 | EMPTY_HOWTO (0x19), | |
276 | EMPTY_HOWTO (0x1a), | |
277 | EMPTY_HOWTO (0x1b), | |
278 | HOWTO (COFF860_R_PAIR, /* type */ | |
279 | 0, /* rightshift */ | |
280 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
281 | 16, /* bitsize */ | |
282 | FALSE, /* pc_relative */ | |
283 | 0, /* bitpos */ | |
284 | complain_overflow_dont, /* complain_on_overflow */ | |
285 | coff_i860_reloc_nyi, /* special_function */ | |
286 | "PAIR", /* name */ | |
287 | FALSE, /* partial_inplace */ | |
288 | 0xffff, /* src_mask */ | |
289 | 0xffff, /* dst_mask */ | |
290 | FALSE), /* pcrel_offset */ | |
291 | EMPTY_HOWTO (0x1d), | |
292 | HOWTO (COFF860_R_HIGH, /* type */ | |
293 | 16, /* rightshift */ | |
294 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
295 | 16, /* bitsize */ | |
296 | FALSE, /* pc_relative */ | |
297 | 0, /* bitpos */ | |
298 | complain_overflow_dont, /* complain_on_overflow */ | |
299 | coff_i860_reloc, /* special_function */ | |
300 | "HIGH", /* name */ | |
301 | FALSE, /* partial_inplace */ | |
302 | 0xffff, /* src_mask */ | |
303 | 0xffff, /* dst_mask */ | |
304 | FALSE), /* pcrel_offset */ | |
305 | HOWTO (COFF860_R_LOW0, /* type */ | |
306 | 0, /* rightshift */ | |
307 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 16, /* bitsize */ | |
309 | FALSE, /* pc_relative */ | |
310 | 0, /* bitpos */ | |
311 | complain_overflow_dont, /* complain_on_overflow */ | |
312 | coff_i860_reloc, /* special_function */ | |
313 | "LOW0", /* name */ | |
314 | FALSE, /* partial_inplace */ | |
315 | 0xffff, /* src_mask */ | |
316 | 0xffff, /* dst_mask */ | |
317 | FALSE), /* pcrel_offset */ | |
318 | HOWTO (COFF860_R_LOW1, /* type */ | |
319 | 0, /* rightshift */ | |
320 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
321 | 16, /* bitsize */ | |
322 | FALSE, /* pc_relative */ | |
323 | 0, /* bitpos */ | |
324 | complain_overflow_dont, /* complain_on_overflow */ | |
325 | coff_i860_reloc, /* special_function */ | |
326 | "LOW1", /* name */ | |
327 | FALSE, /* partial_inplace */ | |
328 | 0xfffe, /* src_mask */ | |
329 | 0xfffe, /* dst_mask */ | |
330 | FALSE), /* pcrel_offset */ | |
331 | HOWTO (COFF860_R_LOW2, /* type */ | |
332 | 0, /* rightshift */ | |
333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
334 | 16, /* bitsize */ | |
335 | FALSE, /* pc_relative */ | |
336 | 0, /* bitpos */ | |
337 | complain_overflow_dont, /* complain_on_overflow */ | |
338 | coff_i860_reloc, /* special_function */ | |
339 | "LOW2", /* name */ | |
340 | FALSE, /* partial_inplace */ | |
341 | 0xfffc, /* src_mask */ | |
342 | 0xfffc, /* dst_mask */ | |
343 | FALSE), /* pcrel_offset */ | |
344 | HOWTO (COFF860_R_LOW3, /* type */ | |
345 | 0, /* rightshift */ | |
346 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
347 | 16, /* bitsize */ | |
348 | FALSE, /* pc_relative */ | |
349 | 0, /* bitpos */ | |
350 | complain_overflow_dont, /* complain_on_overflow */ | |
351 | coff_i860_reloc, /* special_function */ | |
352 | "LOW3", /* name */ | |
353 | FALSE, /* partial_inplace */ | |
354 | 0xfff8, /* src_mask */ | |
355 | 0xfff8, /* dst_mask */ | |
356 | FALSE), /* pcrel_offset */ | |
357 | HOWTO (COFF860_R_LOW4, /* type */ | |
358 | 0, /* rightshift */ | |
359 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
360 | 16, /* bitsize */ | |
361 | FALSE, /* pc_relative */ | |
362 | 0, /* bitpos */ | |
363 | complain_overflow_dont, /* complain_on_overflow */ | |
364 | coff_i860_reloc, /* special_function */ | |
365 | "LOW4", /* name */ | |
366 | FALSE, /* partial_inplace */ | |
367 | 0xfff0, /* src_mask */ | |
368 | 0xfff0, /* dst_mask */ | |
369 | FALSE), /* pcrel_offset */ | |
370 | HOWTO (COFF860_R_SPLIT0, /* type */ | |
371 | 0, /* rightshift */ | |
372 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
373 | 16, /* bitsize */ | |
374 | FALSE, /* pc_relative */ | |
375 | 0, /* bitpos */ | |
376 | complain_overflow_dont, /* complain_on_overflow */ | |
377 | coff_i860_reloc_nyi, /* special_function */ | |
378 | "SPLIT0", /* name */ | |
379 | FALSE, /* partial_inplace */ | |
380 | 0x1f07ff, /* src_mask */ | |
381 | 0x1f07ff, /* dst_mask */ | |
382 | FALSE), /* pcrel_offset */ | |
383 | HOWTO (COFF860_R_SPLIT1, /* type */ | |
384 | 0, /* rightshift */ | |
385 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
386 | 16, /* bitsize */ | |
387 | FALSE, /* pc_relative */ | |
388 | 0, /* bitpos */ | |
389 | complain_overflow_dont, /* complain_on_overflow */ | |
390 | coff_i860_reloc_nyi, /* special_function */ | |
391 | "SPLIT1", /* name */ | |
392 | FALSE, /* partial_inplace */ | |
393 | 0x1f07fe, /* src_mask */ | |
394 | 0x1f07fe, /* dst_mask */ | |
395 | FALSE), /* pcrel_offset */ | |
396 | HOWTO (COFF860_R_SPLIT2, /* type */ | |
397 | 0, /* rightshift */ | |
398 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
399 | 16, /* bitsize */ | |
400 | FALSE, /* pc_relative */ | |
401 | 0, /* bitpos */ | |
402 | complain_overflow_dont, /* complain_on_overflow */ | |
403 | coff_i860_reloc_nyi, /* special_function */ | |
404 | "SPLIT2", /* name */ | |
405 | FALSE, /* partial_inplace */ | |
406 | 0x1f07fc, /* src_mask */ | |
407 | 0x1f07fc, /* dst_mask */ | |
408 | FALSE), /* pcrel_offset */ | |
409 | HOWTO (COFF860_R_HIGHADJ, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 16, /* bitsize */ | |
413 | FALSE, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_dont, /* complain_on_overflow */ | |
416 | coff_i860_reloc_nyi, /* special_function */ | |
417 | "HIGHADJ", /* name */ | |
418 | FALSE, /* partial_inplace */ | |
419 | 0xffff, /* src_mask */ | |
420 | 0xffff, /* dst_mask */ | |
421 | FALSE), /* pcrel_offset */ | |
422 | HOWTO (COFF860_R_BRADDR, /* type */ | |
423 | 2, /* rightshift */ | |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 26, /* bitsize */ | |
426 | TRUE, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_bitfield, /* complain_on_overflow */ | |
429 | coff_i860_reloc_nyi, /* special_function */ | |
430 | "BRADDR", /* name */ | |
431 | FALSE, /* partial_inplace */ | |
432 | 0x3ffffff, /* src_mask */ | |
433 | 0x3ffffff, /* dst_mask */ | |
434 | TRUE) /* pcrel_offset */ | |
252b5132 RH |
435 | }; |
436 | ||
c28b1c28 | 437 | /* Turn a howto into a reloc number. */ |
252b5132 RH |
438 | |
439 | #define SELECT_RELOC(x,howto) { x.r_type = howto->type; } | |
440 | #define BADMAG(x) I860BADMAG(x) | |
441 | #define I860 1 /* Customize coffcode.h */ | |
442 | ||
c28b1c28 JE |
443 | #define RTYPE2HOWTO(cache_ptr, dst) \ |
444 | ((cache_ptr)->howto = \ | |
445 | ((dst)->r_type < sizeof (howto_table) / sizeof (howto_table[0]) \ | |
446 | ? howto_table + (dst)->r_type \ | |
447 | : NULL)) | |
252b5132 RH |
448 | |
449 | /* For 860 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared | |
450 | library. On some other COFF targets STYP_BSS is normally | |
451 | STYP_NOLOAD. */ | |
452 | #define BSS_NOLOAD_IS_SHARED_LIBRARY | |
453 | ||
454 | /* Compute the addend of a reloc. If the reloc is to a common symbol, | |
455 | the object file contains the value of the common symbol. By the | |
456 | time this is called, the linker may be using a different symbol | |
457 | from a different object file with a different value. Therefore, we | |
458 | hack wildly to locate the original symbol from this file so that we | |
459 | can make the correct adjustment. This macro sets coffsym to the | |
460 | symbol from the original file, and uses it to set the addend value | |
461 | correctly. If this is not a common symbol, the usual addend | |
462 | calculation is done, except that an additional tweak is needed for | |
463 | PC relative relocs. | |
464 | FIXME: This macro refers to symbols and asect; these are from the | |
465 | calling function, not the macro arguments. */ | |
466 | ||
6d1227b8 | 467 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) |
252b5132 RH |
468 | |
469 | /* We use the special COFF backend linker. */ | |
470 | #define coff_relocate_section _bfd_coff_generic_relocate_section | |
471 | ||
472 | static reloc_howto_type * | |
a62d170c JE |
473 | coff_i860_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
474 | asection *sec, | |
475 | struct internal_reloc *rel, | |
476 | struct coff_link_hash_entry *h, | |
477 | struct internal_syment *sym, | |
478 | bfd_vma *addendp) | |
252b5132 RH |
479 | { |
480 | ||
481 | reloc_howto_type *howto; | |
482 | ||
c28b1c28 JE |
483 | if (rel->r_type > sizeof (howto_table) / sizeof (howto_table[0])) |
484 | { | |
485 | bfd_set_error (bfd_error_bad_value); | |
486 | return NULL; | |
487 | } | |
488 | ||
252b5132 RH |
489 | howto = howto_table + rel->r_type; |
490 | ||
491 | if (howto->pc_relative) | |
492 | *addendp += sec->vma; | |
493 | ||
494 | if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0) | |
495 | { | |
496 | /* This is a common symbol. The section contents include the | |
497 | size (sym->n_value) as an addend. The relocate_section | |
498 | function will be adding in the final value of the symbol. We | |
499 | need to subtract out the current size in order to get the | |
500 | correct result. */ | |
252b5132 | 501 | |
5fcfd273 | 502 | BFD_ASSERT (h != NULL); |
252b5132 RH |
503 | |
504 | /* I think we *do* want to bypass this. If we don't, I have seen some data | |
5c4491d3 | 505 | parameters get the wrong relocation address. If I link two versions |
252b5132 | 506 | with and without this section bypassed and then do a binary comparison, |
5fcfd273 | 507 | the addresses which are different can be looked up in the map. The |
252b5132 | 508 | case in which this section has been bypassed has addresses which correspond |
917583ad | 509 | to values I can find in the map. */ |
252b5132 RH |
510 | *addendp -= sym->n_value; |
511 | } | |
512 | ||
513 | /* If the output symbol is common (in which case this must be a | |
1049f94e | 514 | relocatable link), we need to add in the final size of the |
252b5132 | 515 | common symbol. */ |
5fcfd273 | 516 | if (h != NULL && h->root.type == bfd_link_hash_common) |
252b5132 RH |
517 | *addendp += h->root.u.c.size; |
518 | ||
519 | return howto; | |
520 | } | |
521 | ||
c28b1c28 JE |
522 | static reloc_howto_type * |
523 | coff_i860_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
524 | bfd_reloc_code_real_type code) | |
525 | { | |
526 | switch (code) | |
527 | { | |
528 | case BFD_RELOC_32: | |
529 | return howto_table + R_DIR32; | |
530 | case BFD_RELOC_860_PC26: | |
531 | return howto_table + COFF860_R_BRADDR; | |
532 | case BFD_RELOC_860_PC16: | |
533 | /* ??? How to handle PC16 for COFF? SPLIT0 is close for now. */ | |
534 | return howto_table + COFF860_R_SPLIT0; | |
535 | case BFD_RELOC_860_LOW0: | |
536 | return howto_table + COFF860_R_LOW0; | |
537 | case BFD_RELOC_860_SPLIT0: | |
538 | return howto_table + COFF860_R_SPLIT0; | |
539 | case BFD_RELOC_860_LOW1: | |
540 | return howto_table + COFF860_R_LOW1; | |
541 | case BFD_RELOC_860_SPLIT1: | |
542 | return howto_table + COFF860_R_SPLIT1; | |
543 | case BFD_RELOC_860_LOW2: | |
544 | return howto_table + COFF860_R_LOW2; | |
545 | case BFD_RELOC_860_SPLIT2: | |
546 | return howto_table + COFF860_R_SPLIT2; | |
547 | case BFD_RELOC_860_LOW3: | |
548 | return howto_table + COFF860_R_LOW3; | |
549 | case BFD_RELOC_860_HIGHADJ: | |
550 | return howto_table + COFF860_R_HIGHADJ; | |
551 | case BFD_RELOC_860_HIGH: | |
552 | return howto_table + COFF860_R_HIGH; | |
553 | default: | |
554 | BFD_FAIL (); | |
555 | return 0; | |
556 | } | |
557 | } | |
558 | ||
157090f7 AM |
559 | static reloc_howto_type * |
560 | coff_i860_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
561 | const char *r_name) | |
562 | { | |
563 | unsigned int i; | |
564 | ||
565 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
566 | if (howto_table[i].name != NULL | |
567 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
568 | return &howto_table[i]; | |
569 | ||
570 | return NULL; | |
571 | } | |
572 | ||
c28b1c28 JE |
573 | /* This is called from coff_slurp_reloc_table for each relocation |
574 | entry. This special handling is due to the `PAIR' relocation | |
575 | which has a different meaning for the `r_symndx' field. */ | |
576 | ||
577 | static void | |
578 | i860_reloc_processing (arelent *cache_ptr, struct internal_reloc *dst, | |
579 | asymbol **symbols, bfd *abfd, asection *asect) | |
580 | { | |
581 | if (dst->r_type == COFF860_R_PAIR) | |
582 | { | |
583 | /* Handle the PAIR relocation specially. */ | |
584 | cache_ptr->howto = howto_table + dst->r_type; | |
585 | cache_ptr->address = dst->r_vaddr; | |
586 | cache_ptr->addend = dst->r_symndx; | |
587 | cache_ptr->sym_ptr_ptr= bfd_abs_section_ptr->symbol_ptr_ptr; | |
588 | } | |
589 | else | |
590 | { | |
591 | /* For every other relocation, do exactly what coff_slurp_reloc_table | |
592 | would do (which this code is taken directly from). */ | |
593 | asymbol *ptr = NULL; | |
594 | cache_ptr->address = dst->r_vaddr; | |
595 | ||
596 | if (dst->r_symndx != -1) | |
597 | { | |
598 | if (dst->r_symndx < 0 || dst->r_symndx >= obj_conv_table_size (abfd)) | |
599 | { | |
600 | (*_bfd_error_handler) | |
d003868e AM |
601 | (_("%B: warning: illegal symbol index %ld in relocs"), |
602 | abfd, dst->r_symndx); | |
c28b1c28 JE |
603 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
604 | ptr = NULL; | |
605 | } | |
606 | else | |
607 | { | |
608 | cache_ptr->sym_ptr_ptr = (symbols | |
609 | + obj_convert (abfd)[dst->r_symndx]); | |
610 | ptr = *(cache_ptr->sym_ptr_ptr); | |
611 | } | |
612 | } | |
613 | else | |
614 | { | |
615 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
616 | ptr = NULL; | |
617 | } | |
618 | ||
619 | /* The symbols definitions that we have read in have been | |
620 | relocated as if their sections started at 0. But the offsets | |
621 | refering to the symbols in the raw data have not been | |
622 | modified, so we have to have a negative addend to compensate. | |
623 | ||
624 | Note that symbols which used to be common must be left alone. */ | |
625 | ||
626 | /* Calculate any reloc addend by looking at the symbol. */ | |
627 | CALC_ADDEND (abfd, ptr, (*dst), cache_ptr); | |
628 | ||
629 | cache_ptr->address -= asect->vma; | |
630 | ||
631 | /* Fill in the cache_ptr->howto field from dst->r_type. */ | |
632 | RTYPE2HOWTO (cache_ptr, dst); | |
633 | } | |
634 | } | |
635 | \f | |
636 | #define coff_rtype_to_howto coff_i860_rtype_to_howto | |
637 | #define coff_bfd_reloc_type_lookup coff_i860_reloc_type_lookup | |
157090f7 | 638 | #define coff_bfd_reloc_name_lookup coff_i860_reloc_name_lookup |
c28b1c28 JE |
639 | |
640 | #define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \ | |
641 | i860_reloc_processing (relent, reloc, symbols, abfd, section) | |
252b5132 RH |
642 | |
643 | #include "coffcode.h" | |
644 | ||
645 | static const bfd_target * | |
a62d170c | 646 | i3coff_object_p(bfd *a) |
252b5132 | 647 | { |
917583ad | 648 | return coff_object_p (a); |
252b5132 RH |
649 | } |
650 | ||
651 | const bfd_target | |
652 | #ifdef TARGET_SYM | |
653 | TARGET_SYM = | |
654 | #else | |
655 | i860coff_vec = | |
656 | #endif | |
657 | { | |
658 | #ifdef TARGET_NAME | |
659 | TARGET_NAME, | |
660 | #else | |
661 | "coff-i860", /* name */ | |
662 | #endif | |
663 | bfd_target_coff_flavour, | |
664 | BFD_ENDIAN_LITTLE, /* data byte order is little */ | |
665 | BFD_ENDIAN_LITTLE, /* header byte order is little */ | |
666 | ||
667 | (HAS_RELOC | EXEC_P | /* object flags */ | |
668 | HAS_LINENO | HAS_DEBUG | | |
669 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
670 | ||
671 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
672 | '_', /* leading underscore */ | |
673 | '/', /* ar_pad_char */ | |
674 | 15, /* ar_max_namelen */ | |
675 | ||
676 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
677 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
678 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
679 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
680 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
681 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
682 | ||
5fcfd273 | 683 | /* Note that we allow an object file to be treated as a core file as well. */ |
252b5132 RH |
684 | {_bfd_dummy_target, i3coff_object_p, /* bfd_check_format */ |
685 | bfd_generic_archive_p, i3coff_object_p}, | |
686 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ | |
687 | bfd_false}, | |
688 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ | |
689 | _bfd_write_archive_contents, bfd_false}, | |
690 | ||
691 | BFD_JUMP_TABLE_GENERIC (coff), | |
692 | BFD_JUMP_TABLE_COPY (coff), | |
693 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
694 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), | |
695 | BFD_JUMP_TABLE_SYMBOLS (coff), | |
696 | BFD_JUMP_TABLE_RELOCS (coff), | |
697 | BFD_JUMP_TABLE_WRITE (coff), | |
698 | BFD_JUMP_TABLE_LINK (coff), | |
699 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
700 | ||
c3c89269 | 701 | NULL, |
5fcfd273 | 702 | |
c3c89269 | 703 | COFF_SWAP_TABLE |
252b5132 | 704 | }; |