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252b5132 | 1 | /* BFD back-end for Texas Instruments TMS320C80 Multimedia Video Processor (MVP). |
7898deda | 2 | Copyright 1996, 1997, 1999, 2000 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | Written by Fred Fish ([email protected]) | |
5 | ||
6 | There is nothing new under the sun. This file draws a lot on other | |
7 | coff files. | |
8 | ||
9 | This file is part of BFD, the Binary File Descriptor library. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, 59 Temple Place - Suite 330, | |
24 | Boston, MA 02111-1307, USA. */ | |
25 | ||
26 | #include "bfd.h" | |
27 | #include "bfdlink.h" | |
28 | #include "sysdep.h" | |
29 | #include "libbfd.h" | |
30 | #include "coff/tic80.h" | |
31 | #include "coff/internal.h" | |
32 | #include "libcoff.h" | |
33 | ||
34 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) | |
35 | #define COFF_ALIGN_IN_SECTION_HEADER 1 | |
36 | #define COFF_ALIGN_IN_SFLAGS 1 | |
37 | ||
38 | #define GET_SCNHDR_FLAGS bfd_h_get_16 | |
39 | #define PUT_SCNHDR_FLAGS bfd_h_put_16 | |
40 | ||
41 | static void rtype2howto | |
42 | PARAMS ((arelent *cache_ptr, struct internal_reloc *dst)); | |
43 | static bfd_reloc_status_type ppbase_reloc | |
44 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
45 | static bfd_reloc_status_type glob15_reloc | |
46 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
47 | static bfd_reloc_status_type glob16_reloc | |
48 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
49 | static bfd_reloc_status_type local16_reloc | |
50 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
51 | static boolean coff_tic80_relocate_section | |
52 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
53 | struct internal_reloc *, struct internal_syment *, asection **)); | |
54 | ||
55 | static reloc_howto_type tic80_howto_table[] = | |
56 | { | |
57 | ||
58 | HOWTO (R_RELLONG, /* type */ | |
59 | 0, /* rightshift */ | |
60 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
61 | 32, /* bitsize */ | |
62 | false, /* pc_relative */ | |
63 | 0, /* bitpos */ | |
64 | complain_overflow_bitfield, /* complain_on_overflow */ | |
65 | NULL, /* special_function */ | |
66 | "RELLONG", /* name */ | |
67 | true, /* partial_inplace */ | |
68 | 0xffffffff, /* src_mask */ | |
69 | 0xffffffff, /* dst_mask */ | |
70 | false), /* pcrel_offset */ | |
71 | ||
72 | HOWTO (R_MPPCR, /* type */ | |
73 | 2, /* rightshift */ | |
74 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
75 | 32, /* bitsize */ | |
76 | true, /* pc_relative */ | |
77 | 0, /* bitpos */ | |
78 | complain_overflow_signed, /* complain_on_overflow */ | |
79 | NULL, /* special_function */ | |
80 | "MPPCR", /* name */ | |
81 | true, /* partial_inplace */ | |
82 | 0xffffffff, /* src_mask */ | |
83 | 0xffffffff, /* dst_mask */ | |
84 | true), /* pcrel_offset */ | |
85 | ||
86 | HOWTO (R_ABS, /* type */ | |
87 | 0, /* rightshift */ | |
88 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
89 | 32, /* bitsize */ | |
90 | false, /* pc_relative */ | |
91 | 0, /* bitpos */ | |
92 | complain_overflow_bitfield, /* complain_on_overflow */ | |
93 | NULL, /* special_function */ | |
94 | "ABS", /* name */ | |
95 | true, /* partial_inplace */ | |
96 | 0xffffffff, /* src_mask */ | |
97 | 0xffffffff, /* dst_mask */ | |
98 | false), /* pcrel_offset */ | |
99 | ||
100 | HOWTO (R_PPBASE, /* type */ | |
101 | 0, /* rightshift */ | |
102 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
103 | 32, /* bitsize */ | |
104 | false, /* pc_relative */ | |
105 | 0, /* bitpos */ | |
106 | complain_overflow_dont, /* complain_on_overflow */ | |
107 | ppbase_reloc, /* special_function */ | |
108 | "PPBASE", /* name */ | |
109 | true, /* partial_inplace */ | |
110 | 0xffffffff, /* src_mask */ | |
111 | 0xffffffff, /* dst_mask */ | |
112 | false), /* pcrel_offset */ | |
113 | ||
114 | HOWTO (R_PPLBASE, /* type */ | |
115 | 0, /* rightshift */ | |
116 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
117 | 32, /* bitsize */ | |
118 | false, /* pc_relative */ | |
119 | 0, /* bitpos */ | |
120 | complain_overflow_dont, /* complain_on_overflow */ | |
121 | ppbase_reloc, /* special_function */ | |
122 | "PPLBASE", /* name */ | |
123 | true, /* partial_inplace */ | |
124 | 0xffffffff, /* src_mask */ | |
125 | 0xffffffff, /* dst_mask */ | |
126 | false), /* pcrel_offset */ | |
127 | ||
128 | HOWTO (R_PP15, /* type */ | |
129 | 0, /* rightshift */ | |
130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
131 | 15, /* bitsize */ | |
132 | false, /* pc_relative */ | |
133 | 6, /* bitpos */ | |
134 | complain_overflow_dont, /* complain_on_overflow */ | |
135 | glob15_reloc, /* special_function */ | |
136 | "PP15", /* name */ | |
137 | true, /* partial_inplace */ | |
138 | 0x1ffc0, /* src_mask */ | |
139 | 0x1ffc0, /* dst_mask */ | |
140 | false), /* pcrel_offset */ | |
141 | ||
142 | HOWTO (R_PP15W, /* type */ | |
143 | 2, /* rightshift */ | |
144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
145 | 15, /* bitsize */ | |
146 | false, /* pc_relative */ | |
147 | 6, /* bitpos */ | |
148 | complain_overflow_dont, /* complain_on_overflow */ | |
149 | glob15_reloc, /* special_function */ | |
150 | "PP15W", /* name */ | |
151 | true, /* partial_inplace */ | |
152 | 0x1ffc0, /* src_mask */ | |
153 | 0x1ffc0, /* dst_mask */ | |
154 | false), /* pcrel_offset */ | |
155 | ||
156 | HOWTO (R_PP15H, /* type */ | |
157 | 1, /* rightshift */ | |
158 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
159 | 15, /* bitsize */ | |
160 | false, /* pc_relative */ | |
161 | 6, /* bitpos */ | |
162 | complain_overflow_dont, /* complain_on_overflow */ | |
163 | glob15_reloc, /* special_function */ | |
164 | "PP15H", /* name */ | |
165 | true, /* partial_inplace */ | |
166 | 0x1ffc0, /* src_mask */ | |
167 | 0x1ffc0, /* dst_mask */ | |
168 | false), /* pcrel_offset */ | |
169 | ||
170 | HOWTO (R_PP16B, /* type */ | |
171 | 0, /* rightshift */ | |
172 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
173 | 16, /* bitsize */ | |
174 | false, /* pc_relative */ | |
175 | 6, /* bitpos */ | |
176 | complain_overflow_dont, /* complain_on_overflow */ | |
177 | glob16_reloc, /* special_function */ | |
178 | "PP16B", /* name */ | |
179 | true, /* partial_inplace */ | |
180 | 0x3ffc0, /* src_mask */ | |
181 | 0x3ffc0, /* dst_mask */ | |
182 | false), /* pcrel_offset */ | |
183 | ||
184 | HOWTO (R_PPL15, /* type */ | |
185 | 0, /* rightshift */ | |
186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
187 | 15, /* bitsize */ | |
188 | false, /* pc_relative */ | |
189 | 0, /* bitpos */ | |
190 | complain_overflow_dont, /* complain_on_overflow */ | |
191 | NULL, /* special_function */ | |
192 | "PPL15", /* name */ | |
193 | true, /* partial_inplace */ | |
194 | 0x7fff, /* src_mask */ | |
195 | 0x7fff, /* dst_mask */ | |
196 | false), /* pcrel_offset */ | |
197 | ||
198 | HOWTO (R_PPL15W, /* type */ | |
199 | 2, /* rightshift */ | |
200 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
201 | 15, /* bitsize */ | |
202 | false, /* pc_relative */ | |
203 | 0, /* bitpos */ | |
204 | complain_overflow_dont, /* complain_on_overflow */ | |
205 | NULL, /* special_function */ | |
206 | "PPL15W", /* name */ | |
207 | true, /* partial_inplace */ | |
208 | 0x7fff, /* src_mask */ | |
209 | 0x7fff, /* dst_mask */ | |
210 | false), /* pcrel_offset */ | |
211 | ||
212 | HOWTO (R_PPL15H, /* type */ | |
213 | 1, /* rightshift */ | |
214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 15, /* bitsize */ | |
216 | false, /* pc_relative */ | |
217 | 0, /* bitpos */ | |
218 | complain_overflow_dont, /* complain_on_overflow */ | |
219 | NULL, /* special_function */ | |
220 | "PPL15H", /* name */ | |
221 | true, /* partial_inplace */ | |
222 | 0x7fff, /* src_mask */ | |
223 | 0x7fff, /* dst_mask */ | |
224 | false), /* pcrel_offset */ | |
225 | ||
226 | HOWTO (R_PPL16B, /* type */ | |
227 | 0, /* rightshift */ | |
228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
229 | 16, /* bitsize */ | |
230 | false, /* pc_relative */ | |
231 | 0, /* bitpos */ | |
232 | complain_overflow_dont, /* complain_on_overflow */ | |
233 | local16_reloc, /* special_function */ | |
234 | "PPL16B", /* name */ | |
235 | true, /* partial_inplace */ | |
236 | 0xffff, /* src_mask */ | |
237 | 0xffff, /* dst_mask */ | |
238 | false), /* pcrel_offset */ | |
239 | ||
240 | HOWTO (R_PPN15, /* type */ | |
241 | 0, /* rightshift */ | |
242 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
243 | 15, /* bitsize */ | |
244 | false, /* pc_relative */ | |
245 | 6, /* bitpos */ | |
246 | complain_overflow_dont, /* complain_on_overflow */ | |
247 | glob15_reloc, /* special_function */ | |
248 | "PPN15", /* name */ | |
249 | true, /* partial_inplace */ | |
250 | 0x1ffc0, /* src_mask */ | |
251 | 0x1ffc0, /* dst_mask */ | |
252 | false), /* pcrel_offset */ | |
253 | ||
254 | HOWTO (R_PPN15W, /* type */ | |
255 | 2, /* rightshift */ | |
256 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
257 | 15, /* bitsize */ | |
258 | false, /* pc_relative */ | |
259 | 6, /* bitpos */ | |
260 | complain_overflow_dont, /* complain_on_overflow */ | |
261 | glob15_reloc, /* special_function */ | |
262 | "PPN15W", /* name */ | |
263 | true, /* partial_inplace */ | |
264 | 0x1ffc0, /* src_mask */ | |
265 | 0x1ffc0, /* dst_mask */ | |
266 | false), /* pcrel_offset */ | |
267 | ||
268 | HOWTO (R_PPN15H, /* type */ | |
269 | 1, /* rightshift */ | |
270 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
271 | 15, /* bitsize */ | |
272 | false, /* pc_relative */ | |
273 | 6, /* bitpos */ | |
274 | complain_overflow_dont, /* complain_on_overflow */ | |
275 | glob15_reloc, /* special_function */ | |
276 | "PPN15H", /* name */ | |
277 | true, /* partial_inplace */ | |
278 | 0x1ffc0, /* src_mask */ | |
279 | 0x1ffc0, /* dst_mask */ | |
280 | false), /* pcrel_offset */ | |
281 | ||
282 | HOWTO (R_PPN16B, /* type */ | |
283 | 0, /* rightshift */ | |
284 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
285 | 16, /* bitsize */ | |
286 | false, /* pc_relative */ | |
287 | 6, /* bitpos */ | |
288 | complain_overflow_dont, /* complain_on_overflow */ | |
289 | glob16_reloc, /* special_function */ | |
290 | "PPN16B", /* name */ | |
291 | true, /* partial_inplace */ | |
292 | 0x3ffc0, /* src_mask */ | |
293 | 0x3ffc0, /* dst_mask */ | |
294 | false), /* pcrel_offset */ | |
295 | ||
296 | HOWTO (R_PPLN15, /* type */ | |
297 | 0, /* rightshift */ | |
298 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 15, /* bitsize */ | |
300 | false, /* pc_relative */ | |
301 | 0, /* bitpos */ | |
302 | complain_overflow_dont, /* complain_on_overflow */ | |
303 | NULL, /* special_function */ | |
304 | "PPLN15", /* name */ | |
305 | true, /* partial_inplace */ | |
306 | 0x7fff, /* src_mask */ | |
307 | 0x7fff, /* dst_mask */ | |
308 | false), /* pcrel_offset */ | |
309 | ||
310 | HOWTO (R_PPLN15W, /* type */ | |
311 | 2, /* rightshift */ | |
312 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 15, /* bitsize */ | |
314 | false, /* pc_relative */ | |
315 | 0, /* bitpos */ | |
316 | complain_overflow_dont, /* complain_on_overflow */ | |
317 | NULL, /* special_function */ | |
318 | "PPLN15W", /* name */ | |
319 | true, /* partial_inplace */ | |
320 | 0x7fff, /* src_mask */ | |
321 | 0x7fff, /* dst_mask */ | |
322 | false), /* pcrel_offset */ | |
323 | ||
324 | HOWTO (R_PPLN15H, /* type */ | |
325 | 1, /* rightshift */ | |
326 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 15, /* bitsize */ | |
328 | false, /* pc_relative */ | |
329 | 0, /* bitpos */ | |
330 | complain_overflow_dont, /* complain_on_overflow */ | |
331 | NULL, /* special_function */ | |
332 | "PPLN15H", /* name */ | |
333 | true, /* partial_inplace */ | |
334 | 0x7fff, /* src_mask */ | |
335 | 0x7fff, /* dst_mask */ | |
336 | false), /* pcrel_offset */ | |
337 | ||
338 | HOWTO (R_PPLN16B, /* type */ | |
339 | 0, /* rightshift */ | |
340 | -2, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 15, /* bitsize */ | |
342 | false, /* pc_relative */ | |
343 | 0, /* bitpos */ | |
344 | complain_overflow_dont, /* complain_on_overflow */ | |
345 | local16_reloc, /* special_function */ | |
346 | "PPLN16B", /* name */ | |
347 | true, /* partial_inplace */ | |
348 | 0xffff, /* src_mask */ | |
349 | 0xffff, /* dst_mask */ | |
350 | false) /* pcrel_offset */ | |
351 | }; | |
352 | \f | |
353 | /* Special relocation functions, used when the output file is not | |
354 | itself a COFF TIc80 file. */ | |
355 | ||
356 | /* This special function is used for the base address type | |
357 | relocations. */ | |
358 | ||
359 | static bfd_reloc_status_type | |
360 | ppbase_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, | |
361 | error_message) | |
5f771d47 ILT |
362 | bfd *abfd ATTRIBUTE_UNUSED; |
363 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
364 | asymbol *symbol_in ATTRIBUTE_UNUSED; | |
365 | PTR data ATTRIBUTE_UNUSED; | |
366 | asection *input_section ATTRIBUTE_UNUSED; | |
367 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
368 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
369 | { |
370 | /* FIXME. */ | |
371 | abort (); | |
372 | } | |
373 | ||
374 | /* This special function is used for the global 15 bit relocations. */ | |
375 | ||
376 | static bfd_reloc_status_type | |
377 | glob15_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, | |
378 | error_message) | |
5f771d47 ILT |
379 | bfd *abfd ATTRIBUTE_UNUSED; |
380 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
381 | asymbol *symbol_in ATTRIBUTE_UNUSED; | |
382 | PTR data ATTRIBUTE_UNUSED; | |
383 | asection *input_section ATTRIBUTE_UNUSED; | |
384 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
385 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
386 | { |
387 | /* FIXME. */ | |
388 | abort (); | |
389 | } | |
390 | ||
391 | /* This special function is used for the global 16 bit relocations. */ | |
392 | ||
393 | static bfd_reloc_status_type | |
394 | glob16_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, | |
395 | error_message) | |
5f771d47 ILT |
396 | bfd *abfd ATTRIBUTE_UNUSED; |
397 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
398 | asymbol *symbol_in ATTRIBUTE_UNUSED; | |
399 | PTR data ATTRIBUTE_UNUSED; | |
400 | asection *input_section ATTRIBUTE_UNUSED; | |
401 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
402 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
403 | { |
404 | /* FIXME. */ | |
405 | abort (); | |
406 | } | |
407 | ||
408 | /* This special function is used for the local 16 bit relocations. */ | |
409 | ||
410 | static bfd_reloc_status_type | |
411 | local16_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, | |
412 | error_message) | |
5f771d47 ILT |
413 | bfd *abfd ATTRIBUTE_UNUSED; |
414 | arelent *reloc_entry ATTRIBUTE_UNUSED; | |
415 | asymbol *symbol_in ATTRIBUTE_UNUSED; | |
416 | PTR data ATTRIBUTE_UNUSED; | |
417 | asection *input_section ATTRIBUTE_UNUSED; | |
418 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
419 | char **error_message ATTRIBUTE_UNUSED; | |
252b5132 RH |
420 | { |
421 | /* FIXME. */ | |
422 | abort (); | |
423 | } | |
424 | \f | |
425 | /* Code to turn an external r_type into a pointer to an entry in the howto_table. | |
426 | If passed an r_type we don't recognize the abort rather than silently failing | |
cbfe05c4 | 427 | to generate an output file. */ |
252b5132 RH |
428 | |
429 | static void | |
430 | rtype2howto (cache_ptr, dst) | |
431 | arelent *cache_ptr; | |
432 | struct internal_reloc *dst; | |
433 | { | |
434 | unsigned int i; | |
435 | ||
436 | for (i = 0; i < sizeof tic80_howto_table / sizeof tic80_howto_table[0]; i++) | |
437 | { | |
438 | if (tic80_howto_table[i].type == dst->r_type) | |
439 | { | |
440 | cache_ptr->howto = tic80_howto_table + i; | |
441 | return; | |
442 | } | |
443 | } | |
444 | ||
445 | (*_bfd_error_handler) (_("Unrecognized reloc type 0x%x"), | |
446 | (unsigned int) dst->r_type); | |
447 | cache_ptr->howto = tic80_howto_table + 0; | |
448 | } | |
449 | ||
450 | #define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst) | |
451 | #define coff_rtype_to_howto coff_tic80_rtype_to_howto | |
452 | ||
453 | static reloc_howto_type * | |
454 | coff_tic80_rtype_to_howto (abfd, sec, rel, h, sym, addendp) | |
5f771d47 | 455 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
456 | asection *sec; |
457 | struct internal_reloc *rel; | |
5f771d47 ILT |
458 | struct coff_link_hash_entry *h ATTRIBUTE_UNUSED; |
459 | struct internal_syment *sym ATTRIBUTE_UNUSED; | |
252b5132 RH |
460 | bfd_vma *addendp; |
461 | { | |
462 | arelent genrel; | |
463 | ||
464 | if (rel -> r_symndx == -1 && addendp != NULL) | |
465 | { | |
466 | /* This is a TI "internal relocation", which means that the relocation | |
467 | amount is the amount by which the current section is being relocated | |
cbfe05c4 | 468 | in the output section. */ |
252b5132 RH |
469 | *addendp = (sec -> output_section -> vma + sec -> output_offset) - sec -> vma; |
470 | } | |
471 | RTYPE2HOWTO (&genrel, rel); | |
472 | return genrel.howto; | |
473 | } | |
474 | ||
475 | #ifndef BADMAG | |
476 | #define BADMAG(x) TIC80BADMAG(x) | |
477 | #endif | |
478 | \f | |
479 | #define coff_relocate_section coff_tic80_relocate_section | |
480 | ||
481 | /* We need a special relocation routine to handle the PP relocs. Most | |
482 | of this is a copy of _bfd_coff_generic_relocate_section. */ | |
483 | ||
484 | static boolean | |
485 | coff_tic80_relocate_section (output_bfd, info, input_bfd, | |
486 | input_section, contents, relocs, syms, | |
487 | sections) | |
488 | bfd *output_bfd; | |
489 | struct bfd_link_info *info; | |
490 | bfd *input_bfd; | |
491 | asection *input_section; | |
492 | bfd_byte *contents; | |
493 | struct internal_reloc *relocs; | |
494 | struct internal_syment *syms; | |
495 | asection **sections; | |
496 | { | |
497 | struct internal_reloc *rel; | |
498 | struct internal_reloc *relend; | |
499 | ||
500 | rel = relocs; | |
501 | relend = rel + input_section->reloc_count; | |
502 | for (; rel < relend; rel++) | |
503 | { | |
504 | long symndx; | |
505 | struct coff_link_hash_entry *h; | |
506 | struct internal_syment *sym; | |
507 | bfd_vma addend; | |
508 | bfd_vma val; | |
509 | reloc_howto_type *howto; | |
510 | bfd_reloc_status_type rstat; | |
511 | bfd_vma addr; | |
512 | ||
513 | symndx = rel->r_symndx; | |
514 | ||
515 | if (symndx == -1) | |
516 | { | |
517 | h = NULL; | |
518 | sym = NULL; | |
519 | } | |
520 | else | |
cbfe05c4 | 521 | { |
252b5132 RH |
522 | h = obj_coff_sym_hashes (input_bfd)[symndx]; |
523 | sym = syms + symndx; | |
524 | } | |
525 | ||
526 | /* COFF treats common symbols in one of two ways. Either the | |
527 | size of the symbol is included in the section contents, or it | |
528 | is not. We assume that the size is not included, and force | |
529 | the rtype_to_howto function to adjust the addend as needed. */ | |
530 | ||
531 | if (sym != NULL && sym->n_scnum != 0) | |
532 | addend = - sym->n_value; | |
533 | else | |
534 | addend = 0; | |
535 | ||
536 | howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, | |
537 | sym, &addend); | |
538 | if (howto == NULL) | |
539 | return false; | |
540 | ||
541 | val = 0; | |
542 | ||
543 | if (h == NULL) | |
544 | { | |
545 | asection *sec; | |
546 | ||
547 | if (symndx == -1) | |
548 | { | |
549 | sec = bfd_abs_section_ptr; | |
550 | val = 0; | |
551 | } | |
552 | else | |
553 | { | |
554 | sec = sections[symndx]; | |
555 | val = (sec->output_section->vma | |
556 | + sec->output_offset | |
557 | + sym->n_value); | |
558 | if (! obj_pe (output_bfd)) | |
559 | val -= sec->vma; | |
560 | } | |
561 | } | |
562 | else | |
563 | { | |
564 | if (h->root.type == bfd_link_hash_defined | |
565 | || h->root.type == bfd_link_hash_defweak) | |
566 | { | |
567 | asection *sec; | |
568 | ||
569 | sec = h->root.u.def.section; | |
570 | val = (h->root.u.def.value | |
571 | + sec->output_section->vma | |
572 | + sec->output_offset); | |
573 | } | |
574 | ||
575 | else if (! info->relocateable) | |
576 | { | |
577 | if (! ((*info->callbacks->undefined_symbol) | |
578 | (info, h->root.root.string, input_bfd, input_section, | |
5cc7c785 | 579 | rel->r_vaddr - input_section->vma, true))) |
252b5132 RH |
580 | return false; |
581 | } | |
582 | } | |
583 | ||
584 | addr = rel->r_vaddr - input_section->vma; | |
585 | ||
586 | /* FIXME: This code assumes little endian, but the PP can | |
587 | apparently be bi-endian. I don't know if the bi-endianness | |
588 | applies to the instruction set or just to the data. */ | |
589 | switch (howto->type) | |
590 | { | |
591 | default: | |
592 | case R_ABS: | |
593 | case R_RELLONGX: | |
594 | case R_PPL15: | |
595 | case R_PPL15W: | |
596 | case R_PPL15H: | |
597 | case R_PPLN15: | |
598 | case R_PPLN15W: | |
599 | case R_PPLN15H: | |
600 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
601 | contents, addr, val, addend); | |
602 | break; | |
603 | ||
604 | case R_PP15: | |
605 | case R_PP15W: | |
606 | case R_PP15H: | |
607 | case R_PPN15: | |
608 | case R_PPN15W: | |
609 | case R_PPN15H: | |
610 | /* Offset the address so that we can use 4 byte relocations. */ | |
611 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
612 | contents + 2, addr, val, addend); | |
613 | break; | |
614 | ||
615 | case R_PP16B: | |
616 | case R_PPN16B: | |
617 | { | |
618 | /* The most significant bit is stored in bit 6. */ | |
619 | bfd_byte hold; | |
620 | ||
621 | hold = contents[addr + 4]; | |
622 | contents[addr + 4] &=~ 0x20; | |
623 | contents[addr + 4] |= (contents[addr] >> 1) & 0x20; | |
624 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
625 | contents + 2, addr, | |
626 | val, addend); | |
627 | contents[addr] &=~ 0x40; | |
628 | contents[addr] |= (contents[addr + 4] << 1) & 0x40; | |
629 | contents[addr + 4] &=~ 0x20; | |
630 | contents[addr + 4] |= hold & 0x20; | |
631 | break; | |
632 | } | |
633 | ||
634 | case R_PPL16B: | |
635 | case R_PPLN16B: | |
636 | { | |
637 | /* The most significant bit is stored in bit 28. */ | |
638 | bfd_byte hold; | |
639 | ||
640 | hold = contents[addr + 1]; | |
641 | contents[addr + 1] &=~ 0x80; | |
642 | contents[addr + 1] |= (contents[addr + 3] << 3) & 0x80; | |
643 | rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
644 | contents, addr, | |
645 | val, addend); | |
646 | contents[addr + 3] &= ~0x10; | |
647 | contents[addr + 3] |= (contents[addr + 1] >> 3) & 0x10; | |
648 | contents[addr + 1] &=~ 0x80; | |
649 | contents[addr + 1] |= hold & 0x80; | |
650 | break; | |
651 | } | |
cbfe05c4 | 652 | |
252b5132 RH |
653 | case R_PPBASE: |
654 | /* Parameter RAM is from 0x1000000 to 0x1000800. */ | |
655 | contents[addr] &=~ 0x3; | |
656 | if (val >= 0x1000000 && val < 0x1000800) | |
657 | contents[addr] |= 0x3; | |
658 | else | |
659 | contents[addr] |= 0x2; | |
660 | rstat = bfd_reloc_ok; | |
661 | break; | |
662 | ||
663 | case R_PPLBASE: | |
664 | /* Parameter RAM is from 0x1000000 to 0x1000800. */ | |
665 | contents[addr + 2] &= ~0xc0; | |
666 | if (val >= 0x1000000 && val < 0x1000800) | |
667 | contents[addr + 2] |= 0xc0; | |
668 | else | |
669 | contents[addr + 2] |= 0x80; | |
670 | rstat = bfd_reloc_ok; | |
671 | break; | |
672 | } | |
673 | ||
674 | switch (rstat) | |
675 | { | |
676 | default: | |
677 | abort (); | |
678 | case bfd_reloc_ok: | |
679 | break; | |
680 | case bfd_reloc_outofrange: | |
681 | (*_bfd_error_handler) | |
682 | (_("%s: bad reloc address 0x%lx in section `%s'"), | |
683 | bfd_get_filename (input_bfd), | |
684 | (unsigned long) rel->r_vaddr, | |
685 | bfd_get_section_name (input_bfd, input_section)); | |
686 | return false; | |
687 | case bfd_reloc_overflow: | |
688 | { | |
689 | const char *name; | |
690 | char buf[SYMNMLEN + 1]; | |
691 | ||
692 | if (symndx == -1) | |
693 | name = "*ABS*"; | |
694 | else if (h != NULL) | |
695 | name = h->root.root.string; | |
696 | else | |
697 | { | |
698 | name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); | |
699 | if (name == NULL) | |
700 | return false; | |
701 | } | |
702 | ||
703 | if (! ((*info->callbacks->reloc_overflow) | |
704 | (info, name, howto->name, (bfd_vma) 0, input_bfd, | |
705 | input_section, rel->r_vaddr - input_section->vma))) | |
706 | return false; | |
707 | } | |
708 | } | |
709 | } | |
710 | return true; | |
711 | } | |
712 | \f | |
713 | #define TIC80COFF 1 /* Customize coffcode.h */ | |
714 | #undef C_AUTOARG /* Clashes with TIc80's C_UEXT */ | |
715 | #undef C_LASTENT /* Clashes with TIc80's C_STATLAB */ | |
716 | #include "coffcode.h" | |
717 | ||
c3c89269 | 718 | CREATE_LITTLE_COFF_TARGET_VEC (tic80coff_vec, "coff-tic80", D_PAGED, 0, '_', NULL) |