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841eff9e DE |
1 | /* GAS interface for targets using CGEN: Cpu tools GENerator. |
2 | Copyright (C) 1996, 1997 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free Software | |
18 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
1002d8ed | 20 | #include <setjmp.h> |
841eff9e DE |
21 | #include "ansidecl.h" |
22 | #include "bfd.h" | |
23 | #include "cgen-opc.h" | |
24 | #include "as.h" | |
25 | #include "subsegs.h" | |
26 | ||
27 | /* Callback to insert a register into the symbol table. | |
28 | A target may choose to let GAS parse the registers. | |
29 | ??? Not currently used. */ | |
30 | ||
31 | void | |
32 | cgen_asm_record_register (name, number) | |
33 | char *name; | |
34 | int number; | |
35 | { | |
36 | /* Use symbol_create here instead of symbol_new so we don't try to | |
37 | output registers into the object file's symbol table. */ | |
38 | symbol_table_insert (symbol_create (name, reg_section, | |
39 | number, &zero_address_frag)); | |
40 | } | |
41 | ||
42 | /* We need to keep a list of fixups. We can't simply generate them as | |
43 | we go, because that would require us to first create the frag, and | |
44 | that would screw up references to ``.''. | |
45 | ||
46 | This is used by cpu's with simple operands. It keeps knowledge of what | |
47 | an `expressionS' is and what a `fixup' is out of CGEN which for the time | |
48 | being is preferable. | |
49 | ||
50 | OPINDEX is the index in the operand table. | |
51 | OPINFO is something the caller chooses to help in reloc determination. */ | |
52 | ||
53 | struct fixup | |
54 | { | |
55 | int opindex; | |
56 | int opinfo; | |
57 | expressionS exp; | |
58 | }; | |
59 | ||
60 | #define MAX_FIXUPS 5 | |
61 | ||
62 | static struct fixup fixups[MAX_FIXUPS]; | |
63 | static int num_fixups; | |
64 | ||
f3f00e94 DE |
65 | /* Prepare to parse an instruction. |
66 | ??? May wish to make this static and delete calls in md_assemble. */ | |
67 | ||
841eff9e DE |
68 | void |
69 | cgen_asm_init_parse () | |
70 | { | |
71 | num_fixups = 0; | |
72 | } | |
73 | ||
74 | /* Queue a fixup. */ | |
75 | ||
76 | void | |
77 | cgen_queue_fixup (opindex, opinfo, expP) | |
78 | int opindex; | |
79 | expressionS *expP; | |
80 | { | |
81 | /* We need to generate a fixup for this expression. */ | |
82 | if (num_fixups >= MAX_FIXUPS) | |
83 | as_fatal ("too many fixups"); | |
84 | fixups[num_fixups].exp = *expP; | |
85 | fixups[num_fixups].opindex = opindex; | |
86 | fixups[num_fixups].opinfo = opinfo; | |
87 | ++num_fixups; | |
88 | } | |
89 | ||
90 | /* Default routine to record a fixup. | |
91 | This is a cover function to fix_new. | |
92 | It exists because we record INSN with the fixup. | |
93 | ||
94 | FRAG and WHERE are their respective arguments to fix_new_exp. | |
95 | LENGTH is in bits. | |
96 | OPINFO is something the caller chooses to help in reloc determination. | |
97 | ||
98 | At this point we do not use a bfd_reloc_code_real_type for | |
99 | operands residing in the insn, but instead just use the | |
100 | operand index. This lets us easily handle fixups for any | |
101 | operand type. We pick a BFD reloc type in md_apply_fix. */ | |
102 | ||
103 | fixS * | |
104 | cgen_record_fixup (frag, where, insn, length, operand, opinfo, symbol, offset) | |
105 | fragS *frag; | |
106 | int where; | |
1002d8ed | 107 | const CGEN_INSN *insn; |
841eff9e | 108 | int length; |
1002d8ed | 109 | const CGEN_OPERAND *operand; |
841eff9e DE |
110 | int opinfo; |
111 | symbolS *symbol; | |
112 | offsetT offset; | |
113 | { | |
114 | fixS *fixP; | |
115 | ||
116 | /* It may seem strange to use operand->attrs and not insn->attrs here, | |
117 | but it is the operand that has a pc relative relocation. */ | |
118 | ||
119 | fixP = fix_new (frag, where, length / 8, symbol, offset, | |
120 | CGEN_OPERAND_ATTR (operand, CGEN_OPERAND_PCREL_ADDR) != 0, | |
121 | (bfd_reloc_code_real_type) ((int) BFD_RELOC_UNUSED + CGEN_OPERAND_INDEX (operand))); | |
122 | fixP->tc_fix_data.insn = (PTR) insn; | |
123 | fixP->tc_fix_data.opinfo = opinfo; | |
124 | ||
125 | return fixP; | |
126 | } | |
127 | ||
128 | /* Default routine to record a fixup given an expression. | |
129 | This is a cover function to fix_new_exp. | |
130 | It exists because we record INSN with the fixup. | |
131 | ||
132 | FRAG and WHERE are their respective arguments to fix_new_exp. | |
133 | LENGTH is in bits. | |
134 | OPINFO is something the caller chooses to help in reloc determination. | |
135 | ||
136 | At this point we do not use a bfd_reloc_code_real_type for | |
137 | operands residing in the insn, but instead just use the | |
138 | operand index. This lets us easily handle fixups for any | |
139 | operand type. We pick a BFD reloc type in md_apply_fix. */ | |
140 | ||
141 | fixS * | |
142 | cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp) | |
143 | fragS *frag; | |
144 | int where; | |
1002d8ed | 145 | const CGEN_INSN *insn; |
841eff9e | 146 | int length; |
1002d8ed | 147 | const CGEN_OPERAND *operand; |
841eff9e DE |
148 | int opinfo; |
149 | expressionS *exp; | |
150 | { | |
151 | fixS *fixP; | |
152 | ||
153 | /* It may seem strange to use operand->attrs and not insn->attrs here, | |
154 | but it is the operand that has a pc relative relocation. */ | |
155 | ||
156 | fixP = fix_new_exp (frag, where, length / 8, exp, | |
157 | CGEN_OPERAND_ATTR (operand, CGEN_OPERAND_PCREL_ADDR) != 0, | |
158 | (bfd_reloc_code_real_type) ((int) BFD_RELOC_UNUSED + CGEN_OPERAND_INDEX (operand))); | |
159 | fixP->tc_fix_data.insn = (PTR) insn; | |
160 | fixP->tc_fix_data.opinfo = opinfo; | |
161 | ||
162 | return fixP; | |
163 | } | |
164 | ||
1002d8ed DE |
165 | /* Used for communication between the next two procedures. */ |
166 | static jmp_buf expr_jmp_buf; | |
167 | ||
841eff9e DE |
168 | /* Callback for cgen interface. Parse the expression at *STRP. |
169 | The result is an error message or NULL for success (in which case | |
170 | *STRP is advanced past the parsed text). | |
f3f00e94 DE |
171 | WANT is an indication of what the caller is looking for. |
172 | If WANT == CGEN_ASM_PARSE_INIT the caller is beginning to try to match | |
173 | a table entry with the insn, reset the queued fixups counter. | |
174 | An enum cgen_parse_operand_result is stored in RESULTP. | |
175 | OPINDEX is the operand's table entry index. | |
841eff9e DE |
176 | OPINFO is something the caller chooses to help in reloc determination. |
177 | The resulting value is stored in VALUEP. */ | |
178 | ||
179 | const char * | |
f3f00e94 DE |
180 | cgen_parse_operand (want, strP, opindex, opinfo, resultP, valueP) |
181 | enum cgen_parse_operand_type want; | |
841eff9e DE |
182 | const char **strP; |
183 | int opindex; | |
184 | int opinfo; | |
f3f00e94 | 185 | enum cgen_parse_operand_result *resultP; |
841eff9e DE |
186 | bfd_vma *valueP; |
187 | { | |
1002d8ed DE |
188 | #ifdef __STDC__ |
189 | /* These is volatile to survive the setjmp. */ | |
190 | char * volatile hold; | |
191 | enum cgen_parse_operand_result * volatile resultP_1; | |
192 | #else | |
193 | static char *hold; | |
194 | static enum cgen_parse_operand_result *resultP_1; | |
195 | #endif | |
841eff9e DE |
196 | const char *errmsg = NULL; |
197 | expressionS exp; | |
198 | ||
f3f00e94 DE |
199 | if (want == CGEN_PARSE_OPERAND_INIT) |
200 | { | |
201 | cgen_asm_init_parse (); | |
202 | return NULL; | |
203 | } | |
204 | ||
1002d8ed | 205 | resultP_1 = resultP; |
841eff9e DE |
206 | hold = input_line_pointer; |
207 | input_line_pointer = (char *) *strP; | |
1002d8ed DE |
208 | |
209 | /* We rely on md_operand to longjmp back to us. | |
210 | This is done via cgen_md_operand. */ | |
211 | if (setjmp (expr_jmp_buf) != 0) | |
212 | { | |
213 | input_line_pointer = (char *) hold; | |
214 | *resultP_1 = CGEN_PARSE_OPERAND_RESULT_ERROR; | |
215 | return "illegal operand"; | |
216 | } | |
217 | ||
841eff9e | 218 | expression (&exp); |
1002d8ed | 219 | |
841eff9e DE |
220 | *strP = input_line_pointer; |
221 | input_line_pointer = hold; | |
222 | ||
f3f00e94 DE |
223 | /* FIXME: Need to check `want'. */ |
224 | ||
841eff9e DE |
225 | switch (exp.X_op) |
226 | { | |
227 | case O_illegal : | |
228 | errmsg = "illegal operand"; | |
f3f00e94 | 229 | *resultP = CGEN_PARSE_OPERAND_RESULT_ERROR; |
841eff9e DE |
230 | break; |
231 | case O_absent : | |
232 | errmsg = "missing operand"; | |
f3f00e94 | 233 | *resultP = CGEN_PARSE_OPERAND_RESULT_ERROR; |
841eff9e DE |
234 | break; |
235 | case O_constant : | |
236 | *valueP = exp.X_add_number; | |
f3f00e94 | 237 | *resultP = CGEN_PARSE_OPERAND_RESULT_NUMBER; |
841eff9e DE |
238 | break; |
239 | case O_register : | |
240 | *valueP = exp.X_add_number; | |
f3f00e94 | 241 | *resultP = CGEN_PARSE_OPERAND_RESULT_REGISTER; |
841eff9e DE |
242 | break; |
243 | default : | |
244 | cgen_queue_fixup (opindex, opinfo, &exp); | |
245 | *valueP = 0; | |
f3f00e94 | 246 | *resultP = CGEN_PARSE_OPERAND_RESULT_QUEUED; |
841eff9e DE |
247 | break; |
248 | } | |
249 | ||
250 | return errmsg; | |
251 | } | |
252 | ||
1002d8ed DE |
253 | /* md_operand handler to catch unrecognized expressions and halt the |
254 | parsing process so the next entry can be tried. | |
255 | ||
256 | ??? This could be done differently by adding code to `expression'. */ | |
257 | ||
258 | void | |
259 | cgen_md_operand (expressionP) | |
260 | expressionS *expressionP; | |
261 | { | |
262 | longjmp (expr_jmp_buf, 1); | |
263 | } | |
264 | ||
841eff9e DE |
265 | /* Finish assembling instruction INSN. |
266 | BUF contains what we've built up so far. | |
267 | LENGTH is the size of the insn in bits. */ | |
268 | ||
269 | void | |
270 | cgen_asm_finish_insn (insn, buf, length) | |
1002d8ed | 271 | const CGEN_INSN *insn; |
841eff9e DE |
272 | cgen_insn_t *buf; |
273 | unsigned int length; | |
274 | { | |
275 | int i, relax_operand; | |
276 | char *f; | |
277 | unsigned int byte_len = length / 8; | |
278 | ||
279 | /* ??? Target foo issues various warnings here, so one might want to provide | |
280 | a hook here. However, our caller is defined in tc-foo.c so there | |
281 | shouldn't be a need for a hook. */ | |
282 | ||
283 | /* Write out the instruction. | |
284 | It is important to fetch enough space in one call to `frag_more'. | |
285 | We use (f - frag_now->fr_literal) to compute where we are and we | |
286 | don't want frag_now to change between calls. | |
287 | ||
288 | Relaxable instructions: We need to ensure we allocate enough | |
289 | space for the largest insn. */ | |
290 | ||
291 | if (CGEN_INSN_ATTR (insn, CGEN_INSN_RELAX) != 0) | |
292 | abort (); /* These currently shouldn't get here. */ | |
293 | ||
294 | /* Is there a relaxable insn with the relaxable operand needing a fixup? */ | |
295 | ||
296 | relax_operand = -1; | |
297 | if (CGEN_INSN_ATTR (insn, CGEN_INSN_RELAXABLE) != 0) | |
298 | { | |
299 | /* Scan the fixups for the operand affected by relaxing | |
300 | (i.e. the branch address). */ | |
301 | ||
302 | for (i = 0; i < num_fixups; ++i) | |
303 | { | |
304 | if (CGEN_OPERAND_ATTR (& CGEN_SYM (operand_table) [fixups[i].opindex], | |
305 | CGEN_OPERAND_RELAX) != 0) | |
306 | { | |
307 | relax_operand = i; | |
308 | break; | |
309 | } | |
310 | } | |
311 | } | |
312 | ||
313 | if (relax_operand != -1) | |
314 | { | |
315 | int max_len; | |
316 | fragS *old_frag; | |
317 | ||
318 | #ifdef TC_CGEN_MAX_RELAX | |
319 | max_len = TC_CGEN_MAX_RELAX (insn, byte_len); | |
320 | #else | |
321 | max_len = CGEN_MAX_INSN_SIZE; | |
322 | #endif | |
323 | /* Ensure variable part and fixed part are in same fragment. */ | |
324 | /* FIXME: Having to do this seems like a hack. */ | |
325 | frag_grow (max_len); | |
326 | /* Allocate space for the fixed part. */ | |
327 | f = frag_more (byte_len); | |
328 | /* Create a relaxable fragment for this instruction. */ | |
329 | old_frag = frag_now; | |
330 | frag_var (rs_machine_dependent, | |
331 | max_len - byte_len /* max chars */, | |
332 | 0 /* variable part already allocated */, | |
333 | /* FIXME: When we machine generate the relax table, | |
334 | machine generate a macro to compute subtype. */ | |
335 | 1 /* subtype */, | |
336 | fixups[relax_operand].exp.X_add_symbol, | |
337 | fixups[relax_operand].exp.X_add_number, | |
338 | f); | |
339 | /* Record the operand number with the fragment so md_convert_frag | |
340 | can use cgen_md_record_fixup to record the appropriate reloc. */ | |
1002d8ed DE |
341 | old_frag->fr_cgen.insn = insn; |
342 | old_frag->fr_cgen.opindex = fixups[relax_operand].opindex; | |
343 | old_frag->fr_cgen.opinfo = fixups[relax_operand].opinfo; | |
841eff9e DE |
344 | } |
345 | else | |
346 | f = frag_more (byte_len); | |
347 | ||
348 | /* If we're recording insns as numbers (rather than a string of bytes), | |
349 | target byte order handling is deferred until now. */ | |
350 | #if 0 /*def CGEN_INT_INSN*/ | |
351 | switch (length) | |
352 | { | |
353 | case 16: | |
354 | if (cgen_big_endian_p) | |
355 | bfd_putb16 ((bfd_vma) *buf, f); | |
356 | else | |
357 | bfd_putl16 ((bfd_vma) *buf, f); | |
358 | break; | |
359 | case 32: | |
360 | if (cgen_big_endian_p) | |
361 | bfd_putb32 ((bfd_vma) *buf, f); | |
362 | else | |
363 | bfd_putl32 ((bfd_vma) *buf, f); | |
364 | break; | |
365 | default: | |
366 | abort (); | |
367 | } | |
368 | #else | |
369 | memcpy (f, buf, byte_len); | |
370 | #endif | |
371 | ||
372 | /* Create any fixups. */ | |
373 | for (i = 0; i < num_fixups; ++i) | |
374 | { | |
375 | /* Don't create fixups for these. That's done during relaxation. | |
376 | We don't need to test for CGEN_INSN_RELAX as they can't get here | |
377 | (see above). */ | |
378 | if (CGEN_INSN_ATTR (insn, CGEN_INSN_RELAXABLE) != 0 | |
379 | && CGEN_OPERAND_ATTR (& CGEN_SYM (operand_table) [fixups[i].opindex], | |
380 | CGEN_OPERAND_RELAX) != 0) | |
381 | continue; | |
382 | ||
383 | #ifndef md_cgen_record_fixup_exp | |
384 | #define md_cgen_record_fixup_exp cgen_record_fixup_exp | |
385 | #endif | |
386 | ||
387 | md_cgen_record_fixup_exp (frag_now, f - frag_now->fr_literal, | |
388 | insn, length, | |
389 | & CGEN_SYM (operand_table) [fixups[i].opindex], | |
390 | fixups[i].opinfo, | |
391 | &fixups[i].exp); | |
392 | } | |
393 | } | |
394 | ||
395 | /* Apply a fixup to the object code. This is called for all the | |
396 | fixups we generated by the call to fix_new_exp, above. In the call | |
397 | above we used a reloc code which was the largest legal reloc code | |
398 | plus the operand index. Here we undo that to recover the operand | |
399 | index. At this point all symbol values should be fully resolved, | |
400 | and we attempt to completely resolve the reloc. If we can not do | |
401 | that, we determine the correct reloc code and put it back in the fixup. */ | |
402 | ||
403 | /* FIXME: This function handles some of the fixups and bfd_install_relocation | |
404 | handles the rest. bfd_install_relocation (or some other bfd function) | |
405 | should handle them all. */ | |
406 | ||
407 | int | |
408 | cgen_md_apply_fix3 (fixP, valueP, seg) | |
409 | fixS *fixP; | |
410 | valueT *valueP; | |
411 | segT seg; | |
412 | { | |
413 | char *where = fixP->fx_frag->fr_literal + fixP->fx_where; | |
414 | valueT value; | |
415 | ||
416 | /* FIXME FIXME FIXME: The value we are passed in *valuep includes | |
417 | the symbol values. Since we are using BFD_ASSEMBLER, if we are | |
418 | doing this relocation the code in write.c is going to call | |
419 | bfd_install_relocation, which is also going to use the symbol | |
420 | value. That means that if the reloc is fully resolved we want to | |
421 | use *valuep since bfd_install_relocation is not being used. | |
422 | However, if the reloc is not fully resolved we do not want to use | |
423 | *valuep, and must use fx_offset instead. However, if the reloc | |
424 | is PC relative, we do want to use *valuep since it includes the | |
425 | result of md_pcrel_from. This is confusing. */ | |
426 | ||
427 | if (fixP->fx_addsy == (symbolS *) NULL) | |
428 | { | |
429 | value = *valueP; | |
430 | fixP->fx_done = 1; | |
431 | } | |
432 | else if (fixP->fx_pcrel) | |
433 | value = *valueP; | |
434 | else | |
435 | { | |
436 | value = fixP->fx_offset; | |
437 | if (fixP->fx_subsy != (symbolS *) NULL) | |
438 | { | |
439 | if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section) | |
440 | value -= S_GET_VALUE (fixP->fx_subsy); | |
441 | else | |
442 | { | |
443 | /* We don't actually support subtracting a symbol. */ | |
444 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
445 | "expression too complex"); | |
446 | } | |
447 | } | |
448 | } | |
449 | ||
450 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
451 | { | |
452 | int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; | |
1002d8ed | 453 | const CGEN_OPERAND *operand = & CGEN_SYM (operand_table) [opindex]; |
841eff9e DE |
454 | const char *errmsg; |
455 | bfd_reloc_code_real_type reloc_type; | |
1002d8ed DE |
456 | CGEN_FIELDS fields; |
457 | const CGEN_INSN *insn = (CGEN_INSN *) fixP->tc_fix_data.insn; | |
841eff9e DE |
458 | |
459 | /* If the reloc has been fully resolved finish the operand here. */ | |
460 | /* FIXME: This duplicates the capabilities of code in BFD. */ | |
461 | if (fixP->fx_done | |
462 | /* FIXME: If partial_inplace isn't set bfd_install_relocation won't | |
463 | finish the job. Testing for pcrel is a temporary hack. */ | |
464 | || fixP->fx_pcrel) | |
465 | { | |
466 | /* This may seem like overkill, and using bfd_install_relocation or | |
467 | some such may be preferable, but this is simple. */ | |
468 | CGEN_FIELDS_BITSIZE (&fields) = CGEN_INSN_BITSIZE (insn); | |
469 | CGEN_SYM (set_operand) (opindex, &value, &fields); | |
470 | errmsg = CGEN_SYM (validate_operand) (opindex, &fields); | |
471 | if (errmsg) | |
472 | as_warn_where (fixP->fx_file, fixP->fx_line, "%s\n", errmsg); | |
473 | CGEN_SYM (insert_operand) (opindex, &fields, where); | |
474 | } | |
475 | ||
476 | if (fixP->fx_done) | |
477 | return 1; | |
478 | ||
479 | /* The operand isn't fully resolved. Determine a BFD reloc value | |
480 | based on the operand information and leave it to | |
481 | bfd_install_relocation. Note that this doesn't work when | |
482 | partial_inplace == false. */ | |
483 | ||
484 | reloc_type = CGEN_SYM (lookup_reloc) (insn, operand, fixP); | |
485 | if (reloc_type != BFD_RELOC_NONE) | |
486 | { | |
487 | fixP->fx_r_type = reloc_type; | |
488 | } | |
489 | else | |
490 | { | |
491 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
492 | "unresolved expression that must be resolved"); | |
493 | fixP->fx_done = 1; | |
494 | return 1; | |
495 | } | |
496 | } | |
497 | else if (fixP->fx_done) | |
498 | { | |
499 | /* We're finished with this fixup. Install it because | |
500 | bfd_install_relocation won't be called to do it. */ | |
501 | switch (fixP->fx_r_type) | |
502 | { | |
503 | case BFD_RELOC_8: | |
504 | md_number_to_chars (where, value, 1); | |
505 | break; | |
506 | case BFD_RELOC_16: | |
507 | md_number_to_chars (where, value, 2); | |
508 | break; | |
509 | case BFD_RELOC_32: | |
510 | md_number_to_chars (where, value, 4); | |
511 | break; | |
512 | /* FIXME: later add support for 64 bits. */ | |
513 | default: | |
514 | abort (); | |
515 | } | |
516 | } | |
517 | else | |
518 | { | |
519 | /* bfd_install_relocation will be called to finish things up. */ | |
520 | } | |
521 | ||
522 | /* Tuck `value' away for use by tc_gen_reloc. | |
523 | See the comment describing fx_addnumber in write.h. | |
524 | This field is misnamed (or misused :-). */ | |
525 | fixP->fx_addnumber = value; | |
526 | ||
527 | return 1; | |
528 | } | |
529 | ||
530 | /* Translate internal representation of relocation info to BFD target format. | |
531 | ||
532 | FIXME: To what extent can we get all relevant targets to use this? */ | |
533 | ||
534 | arelent * | |
535 | cgen_tc_gen_reloc (section, fixP) | |
536 | asection *section; | |
537 | fixS *fixP; | |
538 | { | |
539 | arelent *reloc; | |
540 | ||
1002d8ed | 541 | reloc = (arelent *) bfd_alloc (stdoutput, sizeof (arelent)); |
841eff9e DE |
542 | |
543 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
544 | if (reloc->howto == (reloc_howto_type *) NULL) | |
545 | { | |
546 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
547 | "internal error: can't export reloc type %d (`%s')", | |
548 | fixP->fx_r_type, bfd_get_reloc_code_name (fixP->fx_r_type)); | |
549 | return NULL; | |
550 | } | |
551 | ||
552 | assert (!fixP->fx_pcrel == !reloc->howto->pc_relative); | |
553 | ||
554 | reloc->sym_ptr_ptr = &fixP->fx_addsy->bsym; | |
555 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; | |
556 | reloc->addend = fixP->fx_addnumber; | |
557 | ||
558 | return reloc; | |
559 | } |