Commit | Line | Data |
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90d85bc4 RP |
1 | /* m88k.c -- Assembler for the Motorola 88000 |
2 | Contributed by Devon Bowen of Buffalo University | |
3 | and Torbjorn Granlund of the Swedish Institute of Computer Science. | |
5ac34ac3 | 4 | Copyright (C) 1989, 1990, 1991, 1993 Free Software Foundation, Inc. |
90d85bc4 RP |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 1, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to | |
20 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
22 | #include <ctype.h> | |
90d85bc4 | 23 | #include "as.h" |
9317b3fa | 24 | #include "m88k-opcode.h" |
90d85bc4 | 25 | |
90d85bc4 RP |
26 | struct field_val_assoc |
27 | { | |
28 | char *name; | |
29 | unsigned val; | |
30 | }; | |
31 | ||
32 | struct field_val_assoc cr_regs[] = | |
33 | { | |
34 | {"PID", 0}, | |
35 | {"PSR", 1}, | |
36 | {"EPSR", 2}, | |
37 | {"SSBR", 3}, | |
38 | {"SXIP", 4}, | |
39 | {"SNIP", 5}, | |
40 | {"SFIP", 6}, | |
41 | {"VBR", 7}, | |
42 | {"DMT0", 8}, | |
43 | {"DMD0", 9}, | |
44 | {"DMA0", 10}, | |
45 | {"DMT1", 11}, | |
46 | {"DMD1", 12}, | |
47 | {"DMA1", 13}, | |
48 | {"DMT2", 14}, | |
49 | {"DMD2", 15}, | |
50 | {"DMA2", 16}, | |
51 | {"SR0", 17}, | |
52 | {"SR1", 18}, | |
53 | {"SR2", 19}, | |
54 | {"SR3", 20}, | |
55 | ||
56 | {NULL, 0}, | |
57 | }; | |
58 | ||
59 | struct field_val_assoc fcr_regs[] = | |
60 | { | |
61 | {"FPECR", 0}, | |
62 | {"FPHS1", 1}, | |
63 | {"FPLS1", 2}, | |
64 | {"FPHS2", 3}, | |
65 | {"FPLS2", 4}, | |
66 | {"FPPT", 5}, | |
67 | {"FPRH", 6}, | |
68 | {"FPRL", 7}, | |
69 | {"FPIT", 8}, | |
70 | ||
71 | {"FPSR", 62}, | |
72 | {"FPCR", 63}, | |
73 | ||
74 | {NULL, 0}, | |
75 | }; | |
76 | ||
77 | struct field_val_assoc cmpslot[] = | |
78 | { | |
9317b3fa | 79 | /* Integer Floating point */ |
355afbcd KR |
80 | {"nc", 0}, |
81 | {"cp", 1}, | |
90d85bc4 RP |
82 | {"eq", 2}, |
83 | {"ne", 3}, | |
84 | {"gt", 4}, | |
85 | {"le", 5}, | |
86 | {"lt", 6}, | |
87 | {"ge", 7}, | |
9317b3fa KR |
88 | {"hi", 8}, {"ou", 8}, |
89 | {"ls", 9}, {"ib", 9}, | |
90 | {"lo", 10}, {"in", 10}, | |
91 | {"hs", 11}, {"ob", 11}, | |
92 | {"be", 12}, {"ue", 12}, | |
93 | {"nb", 13}, {"lg", 13}, | |
94 | {"he", 14}, {"ug", 14}, | |
95 | {"nh", 15}, {"ule", 15}, | |
96 | {"ul", 16}, | |
97 | {"uge", 17}, | |
90d85bc4 RP |
98 | |
99 | {NULL, 0}, | |
100 | }; | |
101 | ||
102 | struct field_val_assoc cndmsk[] = | |
103 | { | |
104 | {"gt0", 1}, | |
105 | {"eq0", 2}, | |
106 | {"ge0", 3}, | |
107 | {"lt0", 12}, | |
108 | {"ne0", 13}, | |
109 | {"le0", 14}, | |
110 | ||
111 | {NULL, 0}, | |
112 | }; | |
113 | ||
114 | struct m88k_insn | |
115 | { | |
116 | unsigned long opcode; | |
117 | expressionS exp; | |
118 | enum reloc_type reloc; | |
119 | }; | |
120 | ||
58f3e8a9 RP |
121 | static char *get_bf PARAMS ((char *param, unsigned *valp)); |
122 | static char *get_cmp PARAMS ((char *param, unsigned *valp)); | |
123 | static char *get_cnd PARAMS ((char *param, unsigned *valp)); | |
124 | static char *get_cr PARAMS ((char *param, unsigned *regnop)); | |
125 | static char *get_fcr PARAMS ((char *param, unsigned *regnop)); | |
126 | static char *get_imm16 PARAMS ((char *param, struct m88k_insn *insn)); | |
127 | static char *get_o6 PARAMS ((char *param, unsigned *valp)); | |
128 | static char *get_reg PARAMS ((char *param, unsigned *regnop, int reg_prefix)); | |
129 | static char *get_vec9 PARAMS ((char *param, unsigned *valp)); | |
130 | static char *getval PARAMS ((char *param, unsigned int *valp)); | |
131 | ||
132 | static char *get_pcr PARAMS ((char *param, struct m88k_insn *insn, | |
133 | enum reloc_type reloc)); | |
134 | ||
135 | static int calcop PARAMS ((struct m88k_opcode *format, | |
136 | char *param, struct m88k_insn *insn)); | |
137 | ||
138 | ||
90d85bc4 RP |
139 | extern char *myname; |
140 | static struct hash_control *op_hash = NULL; | |
141 | ||
142 | /* These bits should be turned off in the first address of every segment */ | |
143 | int md_seg_align = 7; | |
144 | ||
90d85bc4 RP |
145 | /* These chars start a comment anywhere in a source file (except inside |
146 | another comment */ | |
587c4264 | 147 | const char comment_chars[] = ";"; |
90d85bc4 RP |
148 | |
149 | /* These chars only start a comment at the beginning of a line. */ | |
587c4264 ILT |
150 | const char line_comment_chars[] = "#"; |
151 | ||
152 | const char line_separator_chars[] = ""; | |
90d85bc4 RP |
153 | |
154 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
587c4264 | 155 | const char EXP_CHARS[] = "eE"; |
90d85bc4 RP |
156 | |
157 | /* Chars that mean this number is a floating point constant */ | |
158 | /* as in 0f123.456 */ | |
159 | /* or 0H1.234E-12 (see exp chars above) */ | |
587c4264 | 160 | const char FLT_CHARS[] = "dDfF"; |
90d85bc4 | 161 | |
c978e704 | 162 | extern void float_cons (), cons (), s_globl (), s_space (), |
36d656a6 | 163 | s_set (), s_lcomm (); |
90d85bc4 RP |
164 | |
165 | const pseudo_typeS md_pseudo_table[] = | |
166 | { | |
c978e704 | 167 | {"align", s_align_bytes, 4}, |
90d85bc4 RP |
168 | {"def", s_set, 0}, |
169 | {"dfloat", float_cons, 'd'}, | |
170 | {"ffloat", float_cons, 'f'}, | |
171 | {"global", s_globl, 0}, | |
355afbcd | 172 | {"half", cons, 2}, |
c978e704 | 173 | {"bss", s_lcomm, 1}, |
90d85bc4 | 174 | {"string", stringer, 0}, |
355afbcd | 175 | {"word", cons, 4}, |
90d85bc4 | 176 | {"zero", s_space, 0}, |
cf897ce2 ILT |
177 | /* Force set to be treated as an instruction. */ |
178 | {"set", NULL, 0}, | |
90d85bc4 RP |
179 | {0} |
180 | }; | |
181 | ||
182 | void | |
183 | md_begin () | |
184 | { | |
58f3e8a9 | 185 | const char *retval = NULL; |
90d85bc4 RP |
186 | unsigned int i = 0; |
187 | ||
188 | /* initialize hash table */ | |
189 | ||
190 | op_hash = hash_new (); | |
191 | if (op_hash == NULL) | |
192 | as_fatal ("Could not initialize hash table"); | |
193 | ||
194 | /* loop until you see the end of the list */ | |
195 | ||
196 | while (*m88k_opcodes[i].name) | |
197 | { | |
198 | char *name = m88k_opcodes[i].name; | |
199 | ||
200 | /* hash each mnemonic and record its position */ | |
201 | ||
202 | retval = hash_insert (op_hash, name, &m88k_opcodes[i]); | |
203 | ||
43029a8f | 204 | if (retval != NULL) |
90d85bc4 | 205 | as_fatal ("Can't hash instruction '%s':%s", |
355afbcd | 206 | m88k_opcodes[i].name, retval); |
90d85bc4 RP |
207 | |
208 | /* skip to next unique mnemonic or end of list */ | |
209 | ||
210 | for (i++; !strcmp (m88k_opcodes[i].name, name); i++) | |
211 | ; | |
212 | } | |
213 | } | |
214 | ||
332fc09f | 215 | int |
90d85bc4 RP |
216 | md_parse_option (argP, cntP, vecP) |
217 | char **argP; | |
218 | int *cntP; | |
219 | char ***vecP; | |
220 | { | |
332fc09f | 221 | return 0; |
90d85bc4 RP |
222 | } |
223 | ||
224 | void | |
225 | md_assemble (op) | |
226 | char *op; | |
227 | { | |
228 | char *param, *thisfrag; | |
c978e704 | 229 | char c; |
90d85bc4 RP |
230 | struct m88k_opcode *format; |
231 | struct m88k_insn insn; | |
232 | ||
233 | assert (op); | |
234 | ||
235 | /* skip over instruction to find parameters */ | |
236 | ||
237 | for (param = op; *param != 0 && !isspace (*param); param++) | |
238 | ; | |
c978e704 ILT |
239 | c = *param; |
240 | *param++ = '\0'; | |
90d85bc4 RP |
241 | |
242 | /* try to find the instruction in the hash table */ | |
243 | ||
244 | if ((format = (struct m88k_opcode *) hash_find (op_hash, op)) == NULL) | |
245 | { | |
8ff6f40e | 246 | as_bad ("Invalid mnemonic '%s'", op); |
90d85bc4 RP |
247 | return; |
248 | } | |
249 | ||
250 | /* try parsing this instruction into insn */ | |
251 | ||
252 | insn.exp.X_add_symbol = 0; | |
5ac34ac3 | 253 | insn.exp.X_op_symbol = 0; |
90d85bc4 | 254 | insn.exp.X_add_number = 0; |
5ac34ac3 | 255 | insn.exp.X_op = O_illegal; |
90d85bc4 RP |
256 | insn.reloc = NO_RELOC; |
257 | ||
258 | while (!calcop (format, param, &insn)) | |
259 | { | |
260 | /* if it doesn't parse try the next instruction */ | |
261 | ||
262 | if (!strcmp (format[0].name, format[1].name)) | |
263 | format++; | |
264 | else | |
265 | { | |
266 | as_fatal ("Parameter syntax error"); | |
267 | return; | |
268 | } | |
269 | } | |
270 | ||
271 | /* grow the current frag and plop in the opcode */ | |
272 | ||
273 | thisfrag = frag_more (4); | |
274 | md_number_to_chars (thisfrag, insn.opcode, 4); | |
275 | ||
276 | /* if this instruction requires labels mark it for later */ | |
277 | ||
278 | switch (insn.reloc) | |
279 | { | |
280 | case NO_RELOC: | |
281 | break; | |
282 | ||
283 | case RELOC_LO16: | |
284 | case RELOC_HI16: | |
5ac34ac3 ILT |
285 | fix_new_exp (frag_now, |
286 | thisfrag - frag_now->fr_literal + 2, | |
287 | 2, | |
288 | &insn.exp, | |
289 | 0, | |
290 | insn.reloc); | |
90d85bc4 RP |
291 | break; |
292 | ||
293 | case RELOC_IW16: | |
5ac34ac3 ILT |
294 | fix_new_exp (frag_now, |
295 | thisfrag - frag_now->fr_literal, | |
296 | 4, | |
297 | &insn.exp, | |
298 | 0, | |
299 | insn.reloc); | |
90d85bc4 RP |
300 | break; |
301 | ||
302 | case RELOC_PC16: | |
5ac34ac3 ILT |
303 | fix_new_exp (frag_now, |
304 | thisfrag - frag_now->fr_literal + 2, | |
305 | 2, | |
306 | &insn.exp, | |
307 | 1, | |
308 | insn.reloc); | |
90d85bc4 RP |
309 | break; |
310 | ||
311 | case RELOC_PC26: | |
5ac34ac3 ILT |
312 | fix_new_exp (frag_now, |
313 | thisfrag - frag_now->fr_literal, | |
314 | 4, | |
315 | &insn.exp, | |
316 | 1, | |
317 | insn.reloc); | |
90d85bc4 RP |
318 | break; |
319 | ||
320 | default: | |
321 | as_fatal ("Unknown relocation type"); | |
322 | break; | |
323 | } | |
324 | } | |
325 | ||
58f3e8a9 | 326 | static int |
90d85bc4 RP |
327 | calcop (format, param, insn) |
328 | struct m88k_opcode *format; | |
329 | char *param; | |
330 | struct m88k_insn *insn; | |
331 | { | |
332 | char *fmt = format->op_spec; | |
333 | int f; | |
334 | unsigned val; | |
335 | unsigned opcode; | |
9317b3fa | 336 | int reg_prefix = 'r'; |
90d85bc4 RP |
337 | |
338 | insn->opcode = format->opcode; | |
339 | opcode = 0; | |
340 | ||
341 | for (;;) | |
342 | { | |
343 | if (param == 0) | |
344 | return 0; | |
345 | f = *fmt++; | |
346 | switch (f) | |
347 | { | |
348 | case 0: | |
349 | insn->opcode |= opcode; | |
58f3e8a9 | 350 | return (*param == 0 || *param == '\n'); |
90d85bc4 RP |
351 | |
352 | default: | |
353 | if (f != *param++) | |
354 | return 0; | |
355 | break; | |
356 | ||
357 | case 'd': | |
9317b3fa KR |
358 | param = get_reg (param, &val, reg_prefix); |
359 | reg_prefix = 'r'; | |
90d85bc4 RP |
360 | opcode |= val << 21; |
361 | break; | |
362 | ||
58f3e8a9 RP |
363 | case 'o': |
364 | param = get_o6 (param, &val); | |
365 | opcode |= ((val >> 2) << 7); | |
366 | break; | |
367 | ||
9317b3fa KR |
368 | case 'x': |
369 | reg_prefix = 'x'; | |
370 | break; | |
371 | ||
90d85bc4 | 372 | case '1': |
9317b3fa KR |
373 | param = get_reg (param, &val, reg_prefix); |
374 | reg_prefix = 'r'; | |
90d85bc4 RP |
375 | opcode |= val << 16; |
376 | break; | |
377 | ||
378 | case '2': | |
9317b3fa KR |
379 | param = get_reg (param, &val, reg_prefix); |
380 | reg_prefix = 'r'; | |
90d85bc4 RP |
381 | opcode |= val; |
382 | break; | |
383 | ||
384 | case '3': | |
9317b3fa | 385 | param = get_reg (param, &val, 'r'); |
90d85bc4 RP |
386 | opcode |= (val << 16) | val; |
387 | break; | |
388 | ||
389 | case 'I': | |
390 | param = get_imm16 (param, insn); | |
391 | break; | |
392 | ||
393 | case 'b': | |
394 | param = get_bf (param, &val); | |
395 | opcode |= val; | |
396 | break; | |
397 | ||
398 | case 'p': | |
399 | param = get_pcr (param, insn, RELOC_PC16); | |
400 | break; | |
401 | ||
402 | case 'P': | |
403 | param = get_pcr (param, insn, RELOC_PC26); | |
404 | break; | |
405 | ||
406 | case 'B': | |
407 | param = get_cmp (param, &val); | |
408 | opcode |= val; | |
409 | break; | |
410 | ||
411 | case 'M': | |
412 | param = get_cnd (param, &val); | |
413 | opcode |= val; | |
414 | break; | |
415 | ||
416 | case 'c': | |
417 | param = get_cr (param, &val); | |
418 | opcode |= val << 5; | |
419 | break; | |
420 | ||
421 | case 'f': | |
422 | param = get_fcr (param, &val); | |
423 | opcode |= val << 5; | |
424 | break; | |
425 | ||
426 | case 'V': | |
427 | param = get_vec9 (param, &val); | |
428 | opcode |= val; | |
429 | break; | |
430 | ||
431 | case '?': | |
432 | /* Having this here repeats the warning somtimes. | |
433 | But can't we stand that? */ | |
434 | as_warn ("Use of obsolete instruction"); | |
435 | break; | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
58f3e8a9 | 440 | static char * |
90d85bc4 RP |
441 | match_name (param, assoc_tab, valp) |
442 | char *param; | |
443 | struct field_val_assoc *assoc_tab; | |
444 | unsigned *valp; | |
445 | { | |
446 | int i; | |
447 | char *name; | |
448 | int name_len; | |
449 | ||
450 | for (i = 0;; i++) | |
451 | { | |
452 | name = assoc_tab[i].name; | |
453 | if (name == NULL) | |
454 | return NULL; | |
455 | name_len = strlen (name); | |
456 | if (!strncmp (param, name, name_len)) | |
457 | { | |
458 | *valp = assoc_tab[i].val; | |
459 | return param + name_len; | |
460 | } | |
461 | } | |
462 | } | |
463 | ||
58f3e8a9 | 464 | static char * |
9317b3fa | 465 | get_reg (param, regnop, reg_prefix) |
90d85bc4 RP |
466 | char *param; |
467 | unsigned *regnop; | |
9317b3fa | 468 | int reg_prefix; |
90d85bc4 RP |
469 | { |
470 | unsigned c; | |
471 | unsigned regno; | |
472 | ||
473 | c = *param++; | |
9317b3fa | 474 | if (c == reg_prefix) |
90d85bc4 RP |
475 | { |
476 | regno = *param++ - '0'; | |
477 | if (regno < 10) | |
478 | { | |
479 | if (regno == 0) | |
480 | { | |
481 | *regnop = 0; | |
482 | return param; | |
483 | } | |
484 | c = *param - '0'; | |
485 | if (c < 10) | |
486 | { | |
487 | regno = regno * 10 + c; | |
488 | if (c < 32) | |
489 | { | |
490 | *regnop = regno; | |
491 | return param + 1; | |
492 | } | |
493 | } | |
494 | else | |
495 | { | |
496 | *regnop = regno; | |
497 | return param; | |
498 | } | |
499 | } | |
500 | return NULL; | |
501 | } | |
502 | else if (c == 's' && param[0] == 'p') | |
503 | { | |
504 | *regnop = 31; | |
505 | return param + 1; | |
506 | } | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
58f3e8a9 | 511 | static char * |
90d85bc4 RP |
512 | get_imm16 (param, insn) |
513 | char *param; | |
514 | struct m88k_insn *insn; | |
515 | { | |
516 | enum reloc_type reloc = NO_RELOC; | |
517 | unsigned int val; | |
90d85bc4 RP |
518 | char *save_ptr; |
519 | ||
520 | if (!strncmp (param, "hi16", 4) && !isalnum (param[4])) | |
521 | { | |
522 | reloc = RELOC_HI16; | |
523 | param += 4; | |
524 | } | |
525 | else if (!strncmp (param, "lo16", 4) && !isalnum (param[4])) | |
526 | { | |
527 | reloc = RELOC_LO16; | |
528 | param += 4; | |
529 | } | |
530 | else if (!strncmp (param, "iw16", 4) && !isalnum (param[4])) | |
531 | { | |
532 | reloc = RELOC_IW16; | |
533 | param += 4; | |
534 | } | |
535 | ||
536 | save_ptr = input_line_pointer; | |
537 | input_line_pointer = param; | |
5ac34ac3 | 538 | expression (&insn->exp); |
90d85bc4 RP |
539 | param = input_line_pointer; |
540 | input_line_pointer = save_ptr; | |
541 | ||
542 | val = insn->exp.X_add_number; | |
543 | ||
5ac34ac3 | 544 | if (insn->exp.X_op == O_constant) |
90d85bc4 RP |
545 | { |
546 | /* Insert the value now, and reset reloc to NO_RELOC. */ | |
547 | if (reloc == NO_RELOC) | |
548 | { | |
549 | /* Warn about too big expressions if not surrounded by xx16. */ | |
550 | if (val > 0xffff) | |
551 | as_warn ("Expression truncated to 16 bits"); | |
552 | } | |
553 | ||
554 | if (reloc == RELOC_HI16) | |
555 | val >>= 16; | |
556 | ||
557 | insn->opcode |= val & 0xffff; | |
558 | reloc = NO_RELOC; | |
559 | } | |
560 | else if (reloc == NO_RELOC) | |
561 | /* We accept a symbol even without lo16, hi16, etc, and assume | |
562 | lo16 was intended. */ | |
563 | reloc = RELOC_LO16; | |
564 | ||
565 | insn->reloc = reloc; | |
566 | ||
567 | return param; | |
568 | } | |
569 | ||
58f3e8a9 | 570 | static char * |
90d85bc4 RP |
571 | get_pcr (param, insn, reloc) |
572 | char *param; | |
573 | struct m88k_insn *insn; | |
574 | enum reloc_type reloc; | |
575 | { | |
576 | char *saveptr, *saveparam; | |
90d85bc4 RP |
577 | |
578 | saveptr = input_line_pointer; | |
579 | input_line_pointer = param; | |
580 | ||
5ac34ac3 | 581 | expression (&insn->exp); |
90d85bc4 RP |
582 | |
583 | saveparam = input_line_pointer; | |
584 | input_line_pointer = saveptr; | |
585 | ||
5ac34ac3 | 586 | /* Botch: We should relocate now if O_constant. */ |
90d85bc4 RP |
587 | insn->reloc = reloc; |
588 | ||
589 | return saveparam; | |
590 | } | |
591 | ||
58f3e8a9 | 592 | static char * |
90d85bc4 RP |
593 | get_cmp (param, valp) |
594 | char *param; | |
595 | unsigned *valp; | |
596 | { | |
597 | unsigned int val; | |
598 | char *save_ptr; | |
599 | ||
600 | save_ptr = param; | |
601 | ||
602 | param = match_name (param, cmpslot, valp); | |
603 | val = *valp; | |
604 | ||
605 | if (param == NULL) | |
606 | { | |
607 | param = save_ptr; | |
608 | ||
609 | save_ptr = input_line_pointer; | |
610 | input_line_pointer = param; | |
611 | val = get_absolute_expression (); | |
612 | param = input_line_pointer; | |
613 | input_line_pointer = save_ptr; | |
614 | ||
615 | if (val >= 32) | |
616 | { | |
617 | as_warn ("Expression truncated to 5 bits"); | |
618 | val %= 32; | |
619 | } | |
620 | } | |
621 | ||
622 | *valp = val << 21; | |
623 | return param; | |
624 | } | |
625 | ||
58f3e8a9 | 626 | static char * |
90d85bc4 RP |
627 | get_cnd (param, valp) |
628 | char *param; | |
629 | unsigned *valp; | |
630 | { | |
631 | unsigned int val; | |
632 | ||
633 | if (isdigit (*param)) | |
634 | { | |
635 | param = getval (param, &val); | |
636 | ||
637 | if (val >= 32) | |
638 | { | |
639 | as_warn ("Expression truncated to 5 bits"); | |
640 | val %= 32; | |
641 | } | |
642 | } | |
643 | else | |
644 | { | |
645 | if (isupper (*param)) | |
646 | *param = tolower (*param); | |
647 | ||
648 | if (isupper (param[1])) | |
649 | param[1] = tolower (param[1]); | |
650 | ||
651 | param = match_name (param, cndmsk, valp); | |
652 | ||
653 | if (param == NULL) | |
654 | return NULL; | |
655 | ||
656 | val = *valp; | |
657 | } | |
658 | ||
659 | *valp = val << 21; | |
660 | return param; | |
661 | } | |
662 | ||
58f3e8a9 | 663 | static char * |
90d85bc4 RP |
664 | get_bf2 (param, bc) |
665 | char *param; | |
666 | int bc; | |
667 | { | |
668 | int depth = 0; | |
669 | int c; | |
670 | ||
671 | for (;;) | |
672 | { | |
673 | c = *param; | |
674 | if (c == 0) | |
675 | return param; | |
676 | else if (c == '(') | |
677 | depth++; | |
678 | else if (c == ')') | |
679 | depth--; | |
680 | else if (c == bc && depth <= 0) | |
681 | return param; | |
682 | param++; | |
683 | } | |
684 | } | |
685 | ||
58f3e8a9 | 686 | static char * |
90d85bc4 RP |
687 | get_bf_offset_expression (param, offsetp) |
688 | char *param; | |
689 | unsigned *offsetp; | |
690 | { | |
691 | unsigned offset; | |
692 | ||
693 | if (isalpha (param[0])) | |
694 | { | |
695 | if (isupper (param[0])) | |
696 | param[0] = tolower (param[0]); | |
697 | if (isupper (param[1])) | |
698 | param[1] = tolower (param[1]); | |
699 | ||
700 | param = match_name (param, cmpslot, offsetp); | |
701 | ||
702 | return param; | |
703 | } | |
704 | else | |
705 | { | |
706 | input_line_pointer = param; | |
707 | offset = get_absolute_expression (); | |
708 | param = input_line_pointer; | |
709 | } | |
710 | ||
711 | *offsetp = offset; | |
712 | return param; | |
713 | } | |
714 | ||
58f3e8a9 | 715 | static char * |
90d85bc4 RP |
716 | get_bf (param, valp) |
717 | char *param; | |
718 | unsigned *valp; | |
719 | { | |
720 | unsigned offset = 0; | |
721 | unsigned width = 0; | |
722 | char *xp; | |
723 | char *save_ptr; | |
724 | ||
725 | xp = get_bf2 (param, '<'); | |
726 | ||
727 | save_ptr = input_line_pointer; | |
728 | input_line_pointer = param; | |
729 | if (*xp == 0) | |
730 | { | |
731 | /* We did not find '<'. We have an offset (width implicitly 32). */ | |
732 | param = get_bf_offset_expression (param, &offset); | |
9317b3fa | 733 | input_line_pointer = save_ptr; |
90d85bc4 RP |
734 | if (param == NULL) |
735 | return NULL; | |
90d85bc4 RP |
736 | } |
737 | else | |
738 | { | |
739 | *xp++ = 0; /* Overwrite the '<' */ | |
740 | param = get_bf2 (xp, '>'); | |
741 | if (*param == 0) | |
742 | return NULL; | |
743 | *param++ = 0; /* Overwrite the '>' */ | |
744 | ||
745 | width = get_absolute_expression (); | |
355afbcd | 746 | xp = get_bf_offset_expression (xp, &offset); |
90d85bc4 RP |
747 | input_line_pointer = save_ptr; |
748 | ||
749 | if (xp + 1 != param) | |
750 | return NULL; | |
751 | } | |
752 | ||
753 | *valp = ((width % 32) << 5) | (offset % 32); | |
754 | ||
755 | return param; | |
756 | } | |
757 | ||
58f3e8a9 | 758 | static char * |
90d85bc4 RP |
759 | get_cr (param, regnop) |
760 | char *param; | |
761 | unsigned *regnop; | |
762 | { | |
763 | unsigned regno; | |
764 | unsigned c; | |
90d85bc4 RP |
765 | |
766 | if (!strncmp (param, "cr", 2)) | |
767 | { | |
768 | param += 2; | |
769 | ||
770 | regno = *param++ - '0'; | |
771 | if (regno < 10) | |
772 | { | |
773 | if (regno == 0) | |
774 | { | |
775 | *regnop = 0; | |
776 | return param; | |
777 | } | |
778 | c = *param - '0'; | |
779 | if (c < 10) | |
780 | { | |
781 | regno = regno * 10 + c; | |
782 | if (c < 64) | |
783 | { | |
784 | *regnop = regno; | |
785 | return param + 1; | |
786 | } | |
787 | } | |
788 | else | |
789 | { | |
790 | *regnop = regno; | |
791 | return param; | |
792 | } | |
793 | } | |
794 | return NULL; | |
795 | } | |
796 | ||
797 | param = match_name (param, cr_regs, regnop); | |
798 | ||
799 | return param; | |
800 | } | |
801 | ||
58f3e8a9 | 802 | static char * |
90d85bc4 RP |
803 | get_fcr (param, regnop) |
804 | char *param; | |
805 | unsigned *regnop; | |
806 | { | |
807 | unsigned regno; | |
808 | unsigned c; | |
90d85bc4 RP |
809 | |
810 | if (!strncmp (param, "fcr", 3)) | |
811 | { | |
812 | param += 3; | |
813 | ||
814 | regno = *param++ - '0'; | |
815 | if (regno < 10) | |
816 | { | |
817 | if (regno == 0) | |
818 | { | |
819 | *regnop = 0; | |
820 | return param; | |
821 | } | |
822 | c = *param - '0'; | |
823 | if (c < 10) | |
824 | { | |
825 | regno = regno * 10 + c; | |
826 | if (c < 64) | |
827 | { | |
828 | *regnop = regno; | |
829 | return param + 1; | |
830 | } | |
831 | } | |
832 | else | |
833 | { | |
834 | *regnop = regno; | |
835 | return param; | |
836 | } | |
837 | } | |
838 | return NULL; | |
839 | } | |
840 | ||
841 | param = match_name (param, fcr_regs, regnop); | |
842 | ||
843 | return param; | |
844 | } | |
845 | ||
58f3e8a9 | 846 | static char * |
90d85bc4 RP |
847 | get_vec9 (param, valp) |
848 | char *param; | |
849 | unsigned *valp; | |
850 | { | |
851 | unsigned val; | |
852 | char *save_ptr; | |
853 | ||
854 | save_ptr = input_line_pointer; | |
855 | input_line_pointer = param; | |
856 | val = get_absolute_expression (); | |
857 | param = input_line_pointer; | |
858 | input_line_pointer = save_ptr; | |
859 | ||
860 | if (val >= 1 << 9) | |
861 | as_warn ("Expression truncated to 9 bits"); | |
862 | ||
863 | *valp = val % (1 << 9); | |
864 | ||
865 | return param; | |
866 | } | |
355afbcd | 867 | |
58f3e8a9 RP |
868 | static char * |
869 | get_o6 (param, valp) | |
870 | char *param; | |
871 | unsigned *valp; | |
872 | { | |
873 | unsigned val; | |
874 | char *save_ptr; | |
875 | ||
876 | save_ptr = input_line_pointer; | |
877 | input_line_pointer = param; | |
878 | val = get_absolute_expression (); | |
879 | param = input_line_pointer; | |
880 | input_line_pointer = save_ptr; | |
881 | ||
882 | if (val & 0x3) | |
883 | as_warn ("Removed lower 2 bits of expression"); | |
884 | ||
885 | *valp = val; | |
886 | ||
887 | return(param); | |
888 | } | |
889 | ||
90d85bc4 RP |
890 | #define hexval(z) \ |
891 | (isdigit (z) ? (z) - '0' : \ | |
892 | islower (z) ? (z) - 'a' + 10 : \ | |
893 | isupper (z) ? (z) - 'A' + 10 : -1) | |
894 | ||
58f3e8a9 | 895 | static char * |
90d85bc4 RP |
896 | getval (param, valp) |
897 | char *param; | |
898 | unsigned int *valp; | |
899 | { | |
900 | unsigned int val = 0; | |
901 | unsigned int c; | |
902 | ||
903 | c = *param++; | |
904 | if (c == '0') | |
905 | { | |
906 | c = *param++; | |
907 | if (c == 'x' || c == 'X') | |
908 | { | |
909 | c = *param++; | |
910 | c = hexval (c); | |
911 | while (c < 16) | |
912 | { | |
913 | val = val * 16 + c; | |
914 | c = *param++; | |
915 | c = hexval (c); | |
916 | } | |
917 | } | |
918 | else | |
919 | { | |
920 | c -= '0'; | |
921 | while (c < 8) | |
922 | { | |
923 | val = val * 8 + c; | |
924 | c = *param++ - '0'; | |
925 | } | |
926 | } | |
927 | } | |
928 | else | |
929 | { | |
930 | c -= '0'; | |
931 | while (c < 10) | |
932 | { | |
933 | val = val * 10 + c; | |
934 | c = *param++ - '0'; | |
935 | } | |
936 | } | |
937 | ||
938 | *valp = val; | |
939 | return param - 1; | |
940 | } | |
941 | ||
942 | void | |
943 | md_number_to_chars (buf, val, nbytes) | |
355afbcd | 944 | char *buf; |
332fc09f | 945 | valueT val; |
355afbcd | 946 | int nbytes; |
90d85bc4 RP |
947 | { |
948 | switch (nbytes) | |
949 | { | |
950 | case 4: | |
951 | *buf++ = val >> 24; | |
952 | *buf++ = val >> 16; | |
953 | case 2: | |
954 | *buf++ = val >> 8; | |
955 | case 1: | |
956 | *buf = val; | |
957 | break; | |
958 | ||
959 | default: | |
960 | abort (); | |
961 | } | |
962 | } | |
963 | ||
c978e704 ILT |
964 | #if 0 |
965 | ||
966 | /* This routine is never called. What is it for? | |
967 | Ian Taylor, Cygnus Support 13 Jul 1993 */ | |
968 | ||
90d85bc4 RP |
969 | void |
970 | md_number_to_imm (buf, val, nbytes, fixP, seg_type) | |
355afbcd KR |
971 | unsigned char *buf; |
972 | unsigned int val; | |
973 | int nbytes; | |
974 | fixS *fixP; | |
975 | int seg_type; | |
90d85bc4 RP |
976 | { |
977 | if (seg_type != N_TEXT || fixP->fx_r_type == NO_RELOC) | |
978 | { | |
979 | switch (nbytes) | |
980 | { | |
981 | case 4: | |
982 | *buf++ = val >> 24; | |
983 | *buf++ = val >> 16; | |
984 | case 2: | |
985 | *buf++ = val >> 8; | |
986 | case 1: | |
987 | *buf = val; | |
988 | break; | |
989 | ||
990 | default: | |
991 | abort (); | |
992 | } | |
993 | return; | |
994 | } | |
995 | ||
996 | switch (fixP->fx_r_type) | |
997 | { | |
998 | case RELOC_IW16: | |
999 | buf[2] = val >> 8; | |
1000 | buf[3] = val; | |
1001 | break; | |
1002 | ||
1003 | case RELOC_LO16: | |
1004 | buf[0] = val >> 8; | |
1005 | buf[1] = val; | |
1006 | break; | |
1007 | ||
1008 | case RELOC_HI16: | |
1009 | buf[0] = val >> 24; | |
1010 | buf[1] = val >> 16; | |
1011 | break; | |
1012 | ||
1013 | case RELOC_PC16: | |
1014 | val += 4; | |
1015 | buf[0] = val >> 10; | |
1016 | buf[1] = val >> 2; | |
1017 | break; | |
1018 | ||
1019 | case RELOC_PC26: | |
1020 | val += 4; | |
1021 | buf[0] |= (val >> 26) & 0x03; | |
1022 | buf[1] = val >> 18; | |
1023 | buf[2] = val >> 10; | |
1024 | buf[3] = val >> 2; | |
1025 | break; | |
1026 | ||
1027 | case RELOC_32: | |
1028 | buf[0] = val >> 24; | |
1029 | buf[1] = val >> 16; | |
1030 | buf[2] = val >> 8; | |
1031 | buf[3] = val; | |
1032 | break; | |
1033 | ||
1034 | default: | |
1035 | as_fatal ("Bad relocation type"); | |
1036 | break; | |
1037 | } | |
1038 | } | |
1039 | ||
c978e704 ILT |
1040 | #endif /* 0 */ |
1041 | ||
90d85bc4 RP |
1042 | void |
1043 | md_number_to_disp (buf, val, nbytes) | |
355afbcd KR |
1044 | char *buf; |
1045 | int val; | |
1046 | int nbytes; | |
90d85bc4 RP |
1047 | { |
1048 | as_fatal ("md_number_to_disp not defined"); | |
1049 | md_number_to_chars (buf, val, nbytes); | |
1050 | } | |
1051 | ||
1052 | void | |
1053 | md_number_to_field (buf, val, nbytes) | |
355afbcd KR |
1054 | char *buf; |
1055 | int val; | |
1056 | int nbytes; | |
90d85bc4 RP |
1057 | { |
1058 | as_fatal ("md_number_to_field not defined"); | |
1059 | md_number_to_chars (buf, val, nbytes); | |
1060 | } | |
1061 | ||
1062 | #define MAX_LITTLENUMS 6 | |
1063 | ||
1064 | /* Turn a string in input_line_pointer into a floating point constant of type | |
1065 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1066 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. | |
1067 | */ | |
1068 | char * | |
1069 | md_atof (type, litP, sizeP) | |
1070 | char type; | |
1071 | char *litP; | |
1072 | int *sizeP; | |
1073 | { | |
355afbcd | 1074 | int prec; |
90d85bc4 RP |
1075 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; |
1076 | LITTLENUM_TYPE *wordP; | |
355afbcd KR |
1077 | char *t; |
1078 | char *atof_ieee (); | |
90d85bc4 RP |
1079 | |
1080 | switch (type) | |
1081 | { | |
1082 | case 'f': | |
1083 | case 'F': | |
1084 | case 's': | |
1085 | case 'S': | |
1086 | prec = 2; | |
1087 | break; | |
1088 | ||
1089 | case 'd': | |
1090 | case 'D': | |
1091 | case 'r': | |
1092 | case 'R': | |
1093 | prec = 4; | |
1094 | break; | |
1095 | ||
1096 | case 'x': | |
1097 | case 'X': | |
1098 | prec = 6; | |
1099 | break; | |
1100 | ||
1101 | case 'p': | |
1102 | case 'P': | |
1103 | prec = 6; | |
1104 | break; | |
1105 | ||
1106 | default: | |
355afbcd | 1107 | *sizeP = 0; |
90d85bc4 RP |
1108 | return "Bad call to MD_ATOF()"; |
1109 | } | |
355afbcd | 1110 | t = atof_ieee (input_line_pointer, type, words); |
90d85bc4 | 1111 | if (t) |
355afbcd | 1112 | input_line_pointer = t; |
90d85bc4 | 1113 | |
355afbcd KR |
1114 | *sizeP = prec * sizeof (LITTLENUM_TYPE); |
1115 | for (wordP = words; prec--;) | |
90d85bc4 RP |
1116 | { |
1117 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
355afbcd | 1118 | litP += sizeof (LITTLENUM_TYPE); |
90d85bc4 | 1119 | } |
99024047 | 1120 | return 0; |
90d85bc4 RP |
1121 | } |
1122 | ||
1123 | int md_short_jump_size = 4; | |
1124 | ||
1125 | void | |
1126 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
1127 | char *ptr; | |
332fc09f | 1128 | addressT from_addr, to_addr; |
90d85bc4 RP |
1129 | fragS *frag; |
1130 | symbolS *to_symbol; | |
1131 | { | |
332fc09f | 1132 | ptr[0] = (char) 0xc0; |
355afbcd KR |
1133 | ptr[1] = 0x00; |
1134 | ptr[2] = 0x00; | |
1135 | ptr[3] = 0x00; | |
90d85bc4 RP |
1136 | fix_new (frag, |
1137 | ptr - frag->fr_literal, | |
1138 | 4, | |
1139 | to_symbol, | |
5ac34ac3 | 1140 | (offsetT) 0, |
90d85bc4 RP |
1141 | 0, |
1142 | RELOC_PC26); /* Botch: Shouldn't this be RELOC_PC16? */ | |
1143 | } | |
1144 | ||
1145 | int md_long_jump_size = 4; | |
1146 | ||
1147 | void | |
1148 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
1149 | char *ptr; | |
332fc09f | 1150 | addressT from_addr, to_addr; |
90d85bc4 RP |
1151 | fragS *frag; |
1152 | symbolS *to_symbol; | |
1153 | { | |
332fc09f | 1154 | ptr[0] = (char) 0xc0; |
355afbcd KR |
1155 | ptr[1] = 0x00; |
1156 | ptr[2] = 0x00; | |
1157 | ptr[3] = 0x00; | |
90d85bc4 RP |
1158 | fix_new (frag, |
1159 | ptr - frag->fr_literal, | |
1160 | 4, | |
1161 | to_symbol, | |
5ac34ac3 | 1162 | (offsetT) 0, |
90d85bc4 RP |
1163 | 0, |
1164 | RELOC_PC26); | |
1165 | } | |
1166 | ||
1167 | int | |
1168 | md_estimate_size_before_relax (fragP, segment_type) | |
1169 | fragS *fragP; | |
332fc09f | 1170 | segT segment_type; |
90d85bc4 RP |
1171 | { |
1172 | as_fatal ("Relaxation should never occur"); | |
58f3e8a9 | 1173 | return (-1); |
90d85bc4 RP |
1174 | } |
1175 | ||
355afbcd KR |
1176 | const relax_typeS md_relax_table[] = |
1177 | {0}; | |
90d85bc4 | 1178 | |
90d85bc4 RP |
1179 | void |
1180 | md_end () | |
1181 | { | |
1182 | } | |
1183 | ||
c978e704 ILT |
1184 | #if 0 |
1185 | ||
1186 | /* As far as I can tell, this routine is never called. What is it | |
1187 | doing here? | |
1188 | Ian Taylor, Cygnus Support 13 Jul 1993 */ | |
1189 | ||
1190 | ||
90d85bc4 RP |
1191 | /* |
1192 | * Risc relocations are completely different, so it needs | |
1193 | * this machine dependent routine to emit them. | |
1194 | */ | |
1195 | void | |
1196 | emit_relocations (fixP, segment_address_in_file) | |
355afbcd KR |
1197 | fixS *fixP; |
1198 | relax_addressT segment_address_in_file; | |
90d85bc4 | 1199 | { |
355afbcd KR |
1200 | struct reloc_info_m88k ri; |
1201 | symbolS *symbolP; | |
1202 | extern char *next_object_file_charP; | |
90d85bc4 | 1203 | |
355afbcd KR |
1204 | bzero ((char *) &ri, sizeof (ri)); |
1205 | for (; fixP; fixP = fixP->fx_next) | |
1206 | { | |
355afbcd KR |
1207 | if (fixP->fx_r_type >= NO_RELOC) |
1208 | { | |
1209 | fprintf (stderr, "fixP->fx_r_type = %d\n", fixP->fx_r_type); | |
1210 | abort (); | |
90d85bc4 RP |
1211 | } |
1212 | ||
355afbcd KR |
1213 | if ((symbolP = fixP->fx_addsy) != NULL) |
1214 | { | |
1215 | ri.r_address = fixP->fx_frag->fr_address + | |
1216 | fixP->fx_where - segment_address_in_file; | |
1217 | if ((symbolP->sy_type & N_TYPE) == N_UNDF) | |
1218 | { | |
1219 | ri.r_extern = 1; | |
1220 | ri.r_symbolnum = symbolP->sy_number; | |
1221 | } | |
1222 | else | |
1223 | { | |
1224 | ri.r_extern = 0; | |
1225 | ri.r_symbolnum = symbolP->sy_type & N_TYPE; | |
1226 | } | |
1227 | if (symbolP && symbolP->sy_frag) | |
1228 | { | |
1229 | ri.r_addend = symbolP->sy_frag->fr_address; | |
90d85bc4 | 1230 | } |
355afbcd KR |
1231 | ri.r_type = fixP->fx_r_type; |
1232 | if (fixP->fx_pcrel) | |
1233 | { | |
355afbcd | 1234 | ri.r_addend -= ri.r_address; |
90d85bc4 | 1235 | } |
355afbcd KR |
1236 | else |
1237 | { | |
1238 | ri.r_addend = fixP->fx_addnumber; | |
90d85bc4 RP |
1239 | } |
1240 | ||
355afbcd | 1241 | append (&next_object_file_charP, (char *) &ri, sizeof (ri)); |
90d85bc4 RP |
1242 | } |
1243 | } | |
355afbcd | 1244 | return; |
90d85bc4 RP |
1245 | } |
1246 | ||
c978e704 ILT |
1247 | #endif /* 0 */ |
1248 | ||
1249 | #if 0 | |
1250 | ||
1251 | /* This routine can be subsumed by s_lcomm in read.c. | |
1252 | Ian Taylor, Cygnus Support 13 Jul 1993 */ | |
1253 | ||
1254 | ||
90d85bc4 | 1255 | static void |
355afbcd | 1256 | s_bss () |
90d85bc4 RP |
1257 | { |
1258 | char *name; | |
1259 | char c; | |
1260 | char *p; | |
9a75dc1f | 1261 | int temp, bss_align; |
90d85bc4 | 1262 | symbolS *symbolP; |
90d85bc4 RP |
1263 | |
1264 | name = input_line_pointer; | |
355afbcd | 1265 | c = get_symbol_end (); |
90d85bc4 RP |
1266 | p = input_line_pointer; |
1267 | *p = c; | |
355afbcd KR |
1268 | SKIP_WHITESPACE (); |
1269 | if (*input_line_pointer != ',') | |
90d85bc4 | 1270 | { |
355afbcd KR |
1271 | as_warn ("Expected comma after name"); |
1272 | ignore_rest_of_line (); | |
90d85bc4 RP |
1273 | return; |
1274 | } | |
355afbcd KR |
1275 | input_line_pointer++; |
1276 | if ((temp = get_absolute_expression ()) < 0) | |
90d85bc4 | 1277 | { |
355afbcd KR |
1278 | as_warn ("BSS length (%d.) <0! Ignored.", temp); |
1279 | ignore_rest_of_line (); | |
90d85bc4 RP |
1280 | return; |
1281 | } | |
1282 | *p = 0; | |
355afbcd | 1283 | symbolP = symbol_find_or_make (name); |
90d85bc4 RP |
1284 | *p = c; |
1285 | if (*input_line_pointer == ',') | |
1286 | { | |
1287 | input_line_pointer++; | |
355afbcd | 1288 | bss_align = get_absolute_expression (); |
90d85bc4 | 1289 | } |
9a75dc1f ILT |
1290 | else |
1291 | bss_align = 0; | |
90d85bc4 | 1292 | |
9a75dc1f ILT |
1293 | if (!S_IS_DEFINED(symbolP) |
1294 | || S_GET_SEGMENT(symbolP) == SEG_BSS) | |
90d85bc4 | 1295 | { |
9a75dc1f ILT |
1296 | if (! need_pass_2) |
1297 | { | |
1298 | char *p; | |
1299 | segT current_seg = now_seg; | |
1300 | subsegT current_subseg = now_subseg; | |
1301 | ||
604633ae | 1302 | subseg_set (SEG_BSS, 1); /* switch to bss */ |
9a75dc1f ILT |
1303 | |
1304 | if (bss_align) | |
1305 | frag_align (bss_align, 0); | |
1306 | ||
1307 | /* detach from old frag */ | |
1308 | if (symbolP->sy_type == N_BSS && symbolP->sy_frag != NULL) | |
1309 | symbolP->sy_frag->fr_symbol = NULL; | |
1310 | ||
1311 | symbolP->sy_frag = frag_now; | |
1312 | p = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, | |
1313 | temp, (char *)0); | |
1314 | *p = 0; | |
1315 | S_SET_SEGMENT (symbolP, SEG_BSS); | |
1316 | ||
604633ae | 1317 | subseg_set (current_seg, current_subseg); |
9a75dc1f | 1318 | } |
90d85bc4 RP |
1319 | } |
1320 | else | |
1321 | { | |
9a75dc1f | 1322 | as_warn ("Ignoring attempt to re-define symbol %s.", name); |
90d85bc4 | 1323 | } |
9a75dc1f | 1324 | |
90d85bc4 RP |
1325 | while (!is_end_of_line[*input_line_pointer]) |
1326 | { | |
1327 | input_line_pointer++; | |
1328 | } | |
1329 | ||
1330 | return; | |
1331 | } | |
c978e704 ILT |
1332 | |
1333 | #endif /* 0 */ | |
1334 | ||
1335 | #ifdef M88KCOFF | |
1336 | ||
1337 | /* These functions are needed if we are linking with obj-coffbfd.c. | |
1338 | That file may be replaced by a more BFD oriented version at some | |
1339 | point. If that happens, these functions should be rexamined. | |
1340 | ||
1341 | Ian Lance Taylor, Cygnus Support, 13 July 1993. */ | |
1342 | ||
1343 | /* Given a fixS structure (created by a call to fix_new, above), | |
1344 | return the BFD relocation type to use for it. */ | |
1345 | ||
1346 | short | |
1347 | tc_coff_fix2rtype (fixp) | |
1348 | fixS *fixp; | |
1349 | { | |
1350 | switch (fixp->fx_r_type) | |
1351 | { | |
1352 | case RELOC_LO16: | |
1353 | return R_LVRT16; | |
1354 | case RELOC_HI16: | |
1355 | return R_HVRT16; | |
1356 | case RELOC_PC16: | |
1357 | return R_PCR16L; | |
1358 | case RELOC_PC26: | |
1359 | return R_PCR26L; | |
1360 | case RELOC_32: | |
1361 | return R_VRT32; | |
1362 | case RELOC_IW16: | |
1363 | return R_VRT16; | |
1364 | default: | |
1365 | abort (); | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | /* Apply a fixS to the object file. Since COFF does not use addends | |
1370 | in relocs, the addend is actually stored directly in the object | |
1371 | file itself. */ | |
1372 | ||
1373 | void | |
1374 | md_apply_fix (fixp, val) | |
1375 | fixS *fixp; | |
1376 | long val; | |
1377 | { | |
1378 | char *buf; | |
1379 | ||
1380 | buf = fixp->fx_frag->fr_literal + fixp->fx_where; | |
8ff6f40e | 1381 | fixp->fx_offset = 0; |
c978e704 ILT |
1382 | |
1383 | switch (fixp->fx_r_type) | |
1384 | { | |
1385 | case RELOC_IW16: | |
8ff6f40e | 1386 | fixp->fx_offset = val >> 16; |
c978e704 ILT |
1387 | buf[2] = val >> 8; |
1388 | buf[3] = val; | |
1389 | break; | |
1390 | ||
1391 | case RELOC_LO16: | |
8ff6f40e | 1392 | fixp->fx_offset = val >> 16; |
c978e704 ILT |
1393 | buf[0] = val >> 8; |
1394 | buf[1] = val; | |
1395 | break; | |
1396 | ||
1397 | case RELOC_HI16: | |
8ff6f40e ILT |
1398 | fixp->fx_offset = val >> 16; |
1399 | buf[0] = val >> 8; | |
1400 | buf[1] = val; | |
c978e704 ILT |
1401 | break; |
1402 | ||
1403 | case RELOC_PC16: | |
1404 | buf[0] = val >> 10; | |
1405 | buf[1] = val >> 2; | |
1406 | break; | |
1407 | ||
1408 | case RELOC_PC26: | |
1409 | buf[0] |= (val >> 26) & 0x03; | |
1410 | buf[1] = val >> 18; | |
1411 | buf[2] = val >> 10; | |
1412 | buf[3] = val >> 2; | |
1413 | break; | |
1414 | ||
1415 | case RELOC_32: | |
1416 | buf[0] = val >> 24; | |
1417 | buf[1] = val >> 16; | |
1418 | buf[2] = val >> 8; | |
1419 | buf[3] = val; | |
1420 | break; | |
1421 | ||
1422 | default: | |
1423 | abort (); | |
1424 | } | |
1425 | } | |
1426 | ||
1427 | /* Where a PC relative offset is calculated from. On the m88k they | |
1428 | are calculated from just after the instruction. */ | |
1429 | ||
1430 | long | |
1431 | md_pcrel_from (fixp) | |
1432 | fixS *fixp; | |
1433 | { | |
2368ec63 ILT |
1434 | switch (fixp->fx_r_type) |
1435 | { | |
1436 | case RELOC_PC16: | |
1437 | return fixp->fx_frag->fr_address + fixp->fx_where - 2; | |
1438 | case RELOC_PC26: | |
1439 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
1440 | default: | |
1441 | abort (); | |
1442 | } | |
1443 | /*NOTREACHED*/ | |
c978e704 ILT |
1444 | } |
1445 | ||
1446 | #endif /* M88KCOFF */ |