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252b5132 | 1 | /* tc-h8300.c -- Assemble code for the Hitachi H8/300 |
4132022d AM |
2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 2000 |
3 | Free Software Foundation. | |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | ||
23 | /* | |
24 | Written By Steve Chamberlain | |
25 | sac@cygnus.com | |
26 | */ | |
27 | ||
28 | #include <stdio.h> | |
29 | #include "as.h" | |
30 | #include "subsegs.h" | |
31 | #include "bfd.h" | |
32 | #define DEFINE_TABLE | |
33 | #define h8_opcodes ops | |
34 | #include "opcode/h8300.h" | |
35 | #include <ctype.h> | |
36 | ||
63a0b638 | 37 | const char comment_chars[] = ";"; |
252b5132 | 38 | const char line_comment_chars[] = "#"; |
63a0b638 | 39 | const char line_separator_chars[] = ""; |
252b5132 RH |
40 | |
41 | /* This table describes all the machine specific pseudo-ops the assembler | |
42 | has to support. The fields are: | |
43 | pseudo-op name without dot | |
44 | function to call to execute this pseudo-op | |
45 | Integer arg to pass to the function | |
46 | */ | |
47 | ||
48 | void cons (); | |
49 | ||
50 | int Hmode; | |
51 | int Smode; | |
52 | #define PSIZE (Hmode ? L_32 : L_16) | |
53 | #define DMODE (L_16) | |
54 | #define DSYMMODE (Hmode ? L_24 : L_16) | |
55 | int bsize = L_8; /* default branch displacement */ | |
56 | ||
57 | ||
58 | void | |
59 | h8300hmode () | |
60 | { | |
61 | Hmode = 1; | |
62 | Smode = 0; | |
63 | } | |
64 | ||
65 | void | |
66 | h8300smode () | |
67 | { | |
68 | Smode = 1; | |
69 | Hmode = 1; | |
70 | } | |
71 | void | |
72 | sbranch (size) | |
73 | int size; | |
74 | { | |
75 | bsize = size; | |
76 | } | |
77 | ||
78 | static void pint () | |
79 | { | |
80 | cons (Hmode ? 4 : 2); | |
81 | } | |
82 | ||
83 | const pseudo_typeS md_pseudo_table[] = | |
84 | { | |
85 | ||
86 | {"h8300h", h8300hmode, 0}, | |
87 | {"h8300s", h8300smode, 0}, | |
88 | {"sbranch", sbranch, L_8}, | |
89 | {"lbranch", sbranch, L_16}, | |
90 | ||
91 | {"int", pint, 0}, | |
92 | {"data.b", cons, 1}, | |
93 | {"data.w", cons, 2}, | |
94 | {"data.l", cons, 4}, | |
95 | {"form", listing_psize, 0}, | |
96 | {"heading", listing_title, 0}, | |
97 | {"import", s_ignore, 0}, | |
98 | {"page", listing_eject, 0}, | |
99 | {"program", s_ignore, 0}, | |
100 | {0, 0, 0} | |
101 | }; | |
102 | ||
103 | const int md_reloc_size; | |
104 | ||
105 | const char EXP_CHARS[] = "eE"; | |
106 | ||
107 | /* Chars that mean this number is a floating point constant */ | |
108 | /* As in 0f12.456 */ | |
109 | /* or 0d1.2345e12 */ | |
110 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
111 | ||
112 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ | |
113 | ||
114 | /* | |
115 | This function is called once, at assembler startup time. This should | |
116 | set up all the tables, etc that the MD part of the assembler needs | |
117 | */ | |
118 | ||
119 | ||
120 | void | |
121 | md_begin () | |
122 | { | |
123 | struct h8_opcode *opcode; | |
124 | char prev_buffer[100]; | |
125 | int idx = 0; | |
126 | ||
127 | opcode_hash_control = hash_new (); | |
128 | prev_buffer[0] = 0; | |
129 | ||
130 | for (opcode = h8_opcodes; opcode->name; opcode++) | |
131 | { | |
132 | /* Strip off any . part when inserting the opcode and only enter | |
133 | unique codes into the hash table | |
134 | */ | |
135 | char *src = opcode->name; | |
136 | unsigned int len = strlen (src); | |
137 | char *dst = malloc (len + 1); | |
138 | char *buffer = dst; | |
139 | ||
140 | opcode->size = 0; | |
141 | while (*src) | |
142 | { | |
143 | if (*src == '.') | |
144 | { | |
145 | src++; | |
146 | opcode->size = *src; | |
147 | break; | |
148 | } | |
149 | *dst++ = *src++; | |
150 | } | |
151 | *dst++ = 0; | |
152 | if (strcmp (buffer, prev_buffer)) | |
153 | { | |
154 | hash_insert (opcode_hash_control, buffer, (char *) opcode); | |
155 | strcpy (prev_buffer, buffer); | |
156 | idx++; | |
157 | } | |
158 | opcode->idx = idx; | |
159 | ||
160 | ||
161 | /* Find the number of operands */ | |
162 | opcode->noperands = 0; | |
163 | while (opcode->args.nib[opcode->noperands] != E) | |
164 | opcode->noperands++; | |
165 | /* Find the length of the opcode in bytes */ | |
166 | opcode->length = 0; | |
167 | while (opcode->data.nib[opcode->length * 2] != E) | |
168 | opcode->length++; | |
169 | } | |
170 | ||
171 | linkrelax = 1; | |
172 | } | |
173 | ||
174 | ||
175 | struct h8_exp | |
176 | { | |
177 | char *e_beg; | |
178 | char *e_end; | |
179 | expressionS e_exp; | |
180 | }; | |
181 | int dispreg; | |
182 | int opsize; /* Set when a register size is seen */ | |
183 | ||
184 | ||
185 | struct h8_op | |
186 | { | |
187 | op_type mode; | |
188 | unsigned reg; | |
189 | expressionS exp; | |
190 | }; | |
191 | ||
192 | /* | |
193 | parse operands | |
194 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp | |
195 | r0l,r0h,..r7l,r7h | |
196 | @WREG | |
197 | @WREG+ | |
198 | @-WREG | |
199 | #const | |
200 | ccr | |
201 | */ | |
202 | ||
203 | /* try and parse a reg name, returns number of chars consumed */ | |
204 | int | |
205 | parse_reg (src, mode, reg, direction) | |
206 | char *src; | |
207 | op_type *mode; | |
208 | unsigned int *reg; | |
209 | int direction; | |
210 | ||
211 | { | |
212 | char *end; | |
213 | int len; | |
214 | ||
215 | /* Cribbed from get_symbol_end(). */ | |
216 | if (!is_name_beginner (*src) || *src == '\001') | |
217 | return 0; | |
218 | end = src+1; | |
219 | while (is_part_of_name (*end) || *end == '\001') | |
220 | end++; | |
221 | len = end - src; | |
222 | ||
223 | if (len == 2 && src[0] == 's' && src[1] == 'p') | |
224 | { | |
225 | *mode = PSIZE | REG | direction; | |
226 | *reg = 7; | |
227 | return len; | |
228 | } | |
229 | if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r') | |
230 | { | |
231 | *mode = CCR; | |
232 | *reg = 0; | |
233 | return len; | |
234 | } | |
235 | if (len == 3 && src[0] == 'e' && src[1] == 'x' && src[2] == 'r') | |
236 | { | |
237 | *mode = EXR; | |
238 | *reg = 0; | |
239 | return len; | |
240 | } | |
241 | if (len == 2 && src[0] == 'f' && src[1] == 'p') | |
242 | { | |
243 | *mode = PSIZE | REG | direction; | |
244 | *reg = 6; | |
245 | return len; | |
246 | } | |
247 | if (len == 3 && src[0] == 'e' && src[1] == 'r' | |
248 | && src[2] >= '0' && src[2] <= '7') | |
249 | { | |
250 | *mode = L_32 | REG | direction; | |
251 | *reg = src[2] - '0'; | |
252 | if (!Hmode) | |
253 | as_warn (_("Reg not valid for H8/300")); | |
254 | return len; | |
255 | } | |
256 | if (len == 2 && src[0] == 'e' && src[1] >= '0' && src[1] <= '7') | |
257 | { | |
258 | *mode = L_16 | REG | direction; | |
259 | *reg = src[1] - '0' + 8; | |
260 | if (!Hmode) | |
261 | as_warn (_("Reg not valid for H8/300")); | |
262 | return len; | |
263 | } | |
264 | ||
265 | if (src[0] == 'r') | |
266 | { | |
267 | if (src[1] >= '0' && src[1] <= '7') | |
268 | { | |
269 | if (len == 3 && src[2] == 'l') | |
270 | { | |
271 | *mode = L_8 | REG | direction; | |
272 | *reg = (src[1] - '0') + 8; | |
273 | return len; | |
274 | } | |
275 | if (len == 3 && src[2] == 'h') | |
276 | { | |
277 | *mode = L_8 | REG | direction; | |
278 | *reg = (src[1] - '0'); | |
279 | return len; | |
280 | } | |
281 | if (len == 2) | |
282 | { | |
283 | *mode = L_16 | REG | direction; | |
284 | *reg = (src[1] - '0'); | |
285 | return len; | |
286 | } | |
287 | } | |
288 | } | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | char * | |
294 | parse_exp (s, op) | |
295 | char *s; | |
296 | expressionS * op; | |
297 | { | |
298 | char *save = input_line_pointer; | |
299 | char *new; | |
300 | ||
301 | input_line_pointer = s; | |
302 | expression (op); | |
303 | if (op->X_op == O_absent) | |
304 | as_bad (_("missing operand")); | |
305 | new = input_line_pointer; | |
306 | input_line_pointer = save; | |
307 | return new; | |
308 | } | |
309 | ||
310 | static char * | |
311 | skip_colonthing (ptr, exp, mode) | |
312 | char *ptr; | |
dbbc7809 | 313 | expressionS *exp ATTRIBUTE_UNUSED; |
252b5132 RH |
314 | int *mode; |
315 | { | |
316 | if (*ptr == ':') | |
317 | { | |
318 | ptr++; | |
319 | *mode &= ~SIZE; | |
320 | if (*ptr == '8') | |
321 | { | |
322 | ptr++; | |
323 | /* ff fill any 8 bit quantity */ | |
324 | /* exp->X_add_number -= 0x100;*/ | |
325 | *mode |= L_8; | |
326 | } | |
327 | else | |
328 | { | |
329 | if (*ptr == '2') | |
330 | { | |
331 | *mode |= L_24; | |
332 | } | |
333 | else if (*ptr == '3') | |
334 | { | |
335 | *mode |= L_32; | |
336 | } | |
337 | else if (*ptr == '1') | |
338 | { | |
339 | *mode |= L_16; | |
340 | } | |
341 | while (isdigit (*ptr)) | |
342 | ptr++; | |
343 | } | |
344 | } | |
345 | return ptr; | |
346 | } | |
347 | ||
348 | /* The many forms of operand: | |
349 | ||
350 | Rn Register direct | |
351 | @Rn Register indirect | |
352 | @(exp[:16], Rn) Register indirect with displacement | |
353 | @Rn+ | |
354 | @-Rn | |
355 | @aa:8 absolute 8 bit | |
356 | @aa:16 absolute 16 bit | |
357 | @aa absolute 16 bit | |
358 | ||
359 | #xx[:size] immediate data | |
360 | @(exp:[8], pc) pc rel | |
361 | @@aa[:8] memory indirect | |
362 | ||
363 | */ | |
364 | ||
365 | char * | |
366 | colonmod24 (op, src) | |
367 | struct h8_op *op; | |
368 | char *src; | |
369 | ||
370 | { | |
371 | int mode = 0; | |
372 | src = skip_colonthing (src, &op->exp, &mode); | |
373 | ||
374 | if (!mode) | |
375 | { | |
376 | /* Choose a default mode */ | |
377 | if (op->exp.X_add_number < -32768 | |
378 | || op->exp.X_add_number > 32767) | |
379 | { | |
380 | if (Hmode) | |
381 | mode = L_24; | |
382 | else | |
383 | mode = L_16; | |
384 | } | |
385 | else if (op->exp.X_add_symbol | |
386 | || op->exp.X_op_symbol) | |
387 | mode = DSYMMODE; | |
388 | else | |
389 | mode = DMODE; | |
390 | } | |
391 | op->mode |= mode; | |
392 | return src; | |
393 | ||
394 | } | |
395 | ||
396 | ||
397 | static void | |
398 | get_operand (ptr, op, dst, direction) | |
399 | char **ptr; | |
400 | struct h8_op *op; | |
dbbc7809 | 401 | unsigned int dst ATTRIBUTE_UNUSED; |
252b5132 RH |
402 | int direction; |
403 | { | |
404 | char *src = *ptr; | |
405 | op_type mode; | |
406 | unsigned int num; | |
407 | unsigned int len; | |
408 | ||
409 | op->mode = E; | |
410 | ||
411 | /* Gross. Gross. ldm and stm have a format not easily handled | |
412 | by get_operand. We deal with it explicitly here. */ | |
413 | if (src[0] == 'e' && src[1] == 'r' && isdigit(src[2]) | |
414 | && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && isdigit(src[6])) | |
415 | { | |
416 | int low, high; | |
417 | ||
418 | low = src[2] - '0'; | |
419 | high = src[6] - '0'; | |
420 | ||
421 | if (high < low) | |
422 | as_bad (_("Invalid register list for ldm/stm\n")); | |
423 | ||
424 | if (low % 2) | |
425 | as_bad (_("Invalid register list for ldm/stm\n")); | |
426 | ||
427 | if (high - low > 3) | |
428 | as_bad (_("Invalid register list for ldm/stm\n")); | |
429 | ||
430 | if (high - low != 1 | |
431 | && low % 4) | |
432 | as_bad (_("Invalid register list for ldm/stm\n")); | |
433 | ||
434 | /* Even sicker. We encode two registers into op->reg. One | |
435 | for the low register to save, the other for the high | |
436 | register to save; we also set the high bit in op->reg | |
437 | so we know this is "very special". */ | |
438 | op->reg = 0x80000000 | (high << 8) | low; | |
439 | op->mode = REG; | |
440 | *ptr = src + 7; | |
441 | return; | |
442 | } | |
443 | ||
444 | len = parse_reg (src, &op->mode, &op->reg, direction); | |
445 | if (len) | |
446 | { | |
447 | *ptr = src + len; | |
448 | return; | |
449 | } | |
450 | ||
451 | if (*src == '@') | |
452 | { | |
453 | src++; | |
454 | if (*src == '@') | |
455 | { | |
456 | src++; | |
457 | src = parse_exp (src, &op->exp); | |
458 | ||
459 | src = skip_colonthing (src, &op->exp, &op->mode); | |
460 | ||
461 | *ptr = src; | |
462 | ||
463 | op->mode = MEMIND; | |
464 | return; | |
465 | ||
466 | } | |
467 | ||
468 | ||
469 | if (*src == '-') | |
470 | { | |
471 | src++; | |
472 | len = parse_reg (src, &mode, &num, direction); | |
473 | if (len == 0) | |
474 | { | |
475 | /* Oops, not a reg after all, must be ordinary exp */ | |
476 | src--; | |
477 | /* must be a symbol */ | |
478 | op->mode = ABS | PSIZE | direction; | |
479 | *ptr = skip_colonthing (parse_exp (src, &op->exp), | |
480 | &op->exp, &op->mode); | |
481 | ||
482 | return; | |
483 | ||
484 | ||
485 | } | |
486 | ||
487 | ||
488 | if ((mode & SIZE) != PSIZE) | |
489 | as_bad (_("Wrong size pointer register for architecture.")); | |
490 | op->mode = RDDEC; | |
491 | op->reg = num; | |
492 | *ptr = src + len; | |
493 | return; | |
494 | } | |
495 | if (*src == '(') | |
496 | { | |
497 | /* Disp */ | |
498 | src++; | |
499 | ||
500 | /* Start off assuming a 16 bit offset */ | |
501 | ||
502 | ||
503 | src = parse_exp (src, &op->exp); | |
504 | ||
505 | src = colonmod24 (op, src); | |
506 | ||
507 | if (*src == ')') | |
508 | { | |
509 | src++; | |
510 | op->mode |= ABS | direction; | |
511 | *ptr = src; | |
512 | return; | |
513 | } | |
514 | ||
515 | if (*src != ',') | |
516 | { | |
517 | as_bad (_("expected @(exp, reg16)")); | |
518 | return; | |
519 | ||
520 | } | |
521 | src++; | |
522 | ||
523 | len = parse_reg (src, &mode, &op->reg, direction); | |
524 | if (len == 0 || !(mode & REG)) | |
525 | { | |
526 | as_bad (_("expected @(exp, reg16)")); | |
527 | return; | |
528 | } | |
529 | op->mode |= DISP | direction; | |
530 | dispreg = op->reg; | |
531 | src += len; | |
532 | src = skip_colonthing (src, &op->exp, &op->mode); | |
533 | ||
534 | if (*src != ')' && '(') | |
535 | { | |
536 | as_bad (_("expected @(exp, reg16)")); | |
537 | return; | |
538 | } | |
539 | *ptr = src + 1; | |
540 | ||
541 | return; | |
542 | } | |
543 | len = parse_reg (src, &mode, &num, direction); | |
544 | ||
545 | if (len) | |
546 | { | |
547 | src += len; | |
548 | if (*src == '+') | |
549 | { | |
550 | src++; | |
551 | if ((mode & SIZE) != PSIZE) | |
552 | as_bad (_("Wrong size pointer register for architecture.")); | |
553 | op->mode = RSINC; | |
554 | op->reg = num; | |
555 | *ptr = src; | |
556 | return; | |
557 | } | |
558 | if ((mode & SIZE) != PSIZE) | |
559 | as_bad (_("Wrong size pointer register for architecture.")); | |
560 | ||
561 | op->mode = direction | IND | PSIZE; | |
562 | op->reg = num; | |
563 | *ptr = src; | |
564 | ||
565 | return; | |
566 | } | |
567 | else | |
568 | { | |
569 | /* must be a symbol */ | |
570 | ||
571 | op->mode = ABS | direction; | |
572 | src = parse_exp (src, &op->exp); | |
573 | ||
574 | *ptr = colonmod24 (op, src); | |
575 | ||
576 | return; | |
577 | } | |
578 | } | |
579 | ||
580 | ||
581 | if (*src == '#') | |
582 | { | |
583 | src++; | |
584 | op->mode = IMM; | |
585 | src = parse_exp (src, &op->exp); | |
586 | *ptr = skip_colonthing (src, &op->exp, &op->mode); | |
587 | ||
588 | return; | |
589 | } | |
590 | else if (strncmp (src, "mach", 4) == 0 | |
591 | || strncmp (src, "macl", 4) == 0) | |
592 | { | |
593 | op->reg = src[3] == 'l'; | |
594 | op->mode = MACREG; | |
595 | *ptr = src + 4; | |
596 | return; | |
597 | } | |
598 | else | |
599 | { | |
600 | src = parse_exp (src, &op->exp); | |
601 | /* Trailing ':' size ? */ | |
602 | if (*src == ':') | |
603 | { | |
604 | if (src[1] == '1' && src[2] == '6') | |
605 | { | |
606 | op->mode = PCREL | L_16; | |
607 | src += 3; | |
608 | } | |
609 | else if (src[1] == '8') | |
610 | { | |
611 | op->mode = PCREL | L_8; | |
612 | src += 2; | |
613 | } | |
614 | else | |
615 | { | |
616 | as_bad (_("expect :8 or :16 here")); | |
617 | } | |
618 | } | |
619 | else | |
620 | { | |
621 | op->mode = PCREL | bsize; | |
622 | } | |
623 | *ptr = src; | |
624 | } | |
625 | } | |
626 | ||
627 | ||
628 | static | |
629 | char * | |
630 | get_operands (noperands, op_end, operand) | |
631 | unsigned int noperands; | |
632 | char *op_end; | |
633 | struct h8_op *operand; | |
634 | { | |
635 | char *ptr = op_end; | |
636 | ||
637 | switch (noperands) | |
638 | { | |
639 | case 0: | |
640 | operand[0].mode = 0; | |
641 | operand[1].mode = 0; | |
642 | break; | |
643 | ||
644 | case 1: | |
645 | ptr++; | |
646 | get_operand (&ptr, operand + 0, 0, SRC); | |
647 | if (*ptr == ',') | |
648 | { | |
649 | ptr++; | |
650 | get_operand (&ptr, operand + 1, 1, DST); | |
651 | } | |
652 | else | |
653 | { | |
654 | operand[1].mode = 0; | |
655 | } | |
656 | ||
657 | break; | |
658 | case 2: | |
659 | ptr++; | |
660 | get_operand (&ptr, operand + 0, 0, SRC); | |
661 | if (*ptr == ',') | |
662 | ptr++; | |
663 | get_operand (&ptr, operand + 1, 1, DST); | |
664 | break; | |
665 | ||
666 | default: | |
667 | abort (); | |
668 | } | |
669 | ||
670 | ||
671 | return ptr; | |
672 | } | |
673 | ||
674 | /* Passed a pointer to a list of opcodes which use different | |
675 | addressing modes, return the opcode which matches the opcodes | |
676 | provided | |
677 | */ | |
678 | static | |
679 | struct h8_opcode * | |
680 | get_specific (opcode, operands, size) | |
681 | struct h8_opcode *opcode; | |
682 | struct h8_op *operands; | |
683 | int size; | |
684 | { | |
685 | struct h8_opcode *this_try = opcode; | |
686 | int found = 0; | |
687 | ||
688 | unsigned int this_index = opcode->idx; | |
689 | ||
690 | /* There's only one ldm/stm and it's easier to just | |
691 | get out quick for them. */ | |
692 | if (strcmp (opcode->name, "stm.l") == 0 | |
693 | || strcmp (opcode->name, "ldm.l") == 0) | |
694 | return this_try; | |
695 | ||
696 | while (this_index == opcode->idx && !found) | |
697 | { | |
698 | found = 1; | |
699 | ||
700 | this_try = opcode++; | |
701 | if (this_try->noperands == 0) | |
702 | { | |
703 | int this_size; | |
704 | ||
705 | this_size = this_try->how & SN; | |
706 | if (this_size != size && (this_size != SB || size != SN)) | |
707 | found = 0; | |
708 | } | |
709 | else | |
710 | { | |
711 | unsigned int i; | |
712 | ||
713 | for (i = 0; i < this_try->noperands && found; i++) | |
714 | { | |
715 | op_type op = this_try->args.nib[i]; | |
716 | int x = operands[i].mode; | |
717 | ||
718 | if ((op & (DISP | REG)) == (DISP | REG) | |
719 | && ((x & (DISP | REG)) == (DISP | REG))) | |
720 | { | |
721 | dispreg = operands[i].reg; | |
722 | } | |
723 | else if (op & REG) | |
724 | { | |
725 | if (!(x & REG)) | |
726 | found = 0; | |
727 | ||
728 | if (x & L_P) | |
729 | x = (x & ~L_P) | (Hmode ? L_32 : L_16); | |
730 | if (op & L_P) | |
731 | op = (op & ~L_P) | (Hmode ? L_32 : L_16); | |
732 | ||
733 | opsize = op & SIZE; | |
734 | ||
735 | /* The size of the reg is v important */ | |
736 | if ((op & SIZE) != (x & SIZE)) | |
737 | found = 0; | |
738 | } | |
739 | else if ((op & ABSJMP) && (x & ABS)) | |
740 | { | |
741 | operands[i].mode &= ~ABS; | |
742 | operands[i].mode |= ABSJMP; | |
743 | /* But it may not be 24 bits long */ | |
744 | if (!Hmode) | |
745 | { | |
746 | operands[i].mode &= ~SIZE; | |
747 | operands[i].mode |= L_16; | |
748 | } | |
749 | } | |
750 | else if ((op & (KBIT | DBIT)) && (x & IMM)) | |
751 | { | |
752 | /* This is ok if the immediate value is sensible */ | |
753 | } | |
754 | else if (op & PCREL) | |
755 | { | |
756 | /* The size of the displacement is important */ | |
757 | if ((op & SIZE) != (x & SIZE)) | |
758 | found = 0; | |
759 | } | |
760 | else if ((op & (DISP | IMM | ABS)) | |
761 | && (op & (DISP | IMM | ABS)) == (x & (DISP | IMM | ABS))) | |
762 | { | |
763 | /* Promote a L_24 to L_32 if it makes us match. */ | |
764 | if ((x & L_24) && (op & L_32)) | |
765 | { | |
766 | x &= ~L_24; | |
767 | x |= L_32; | |
768 | } | |
769 | /* Promote an L8 to L_16 if it makes us match. */ | |
770 | if (op & ABS && op & L_8 && op & DISP) | |
771 | { | |
772 | if (x & L_16) | |
773 | found= 1; | |
774 | } | |
775 | else if ((x & SIZE) != 0 | |
776 | && ((op & SIZE) != (x & SIZE))) | |
777 | found = 0; | |
778 | } | |
779 | else if ((op & MACREG) != (x & MACREG)) | |
780 | { | |
781 | found = 0; | |
782 | } | |
783 | else if ((op & MODE) != (x & MODE)) | |
784 | { | |
785 | found = 0; | |
786 | } | |
787 | } | |
788 | } | |
789 | } | |
790 | if (found) | |
791 | return this_try; | |
792 | else | |
793 | return 0; | |
794 | } | |
795 | ||
796 | static void | |
797 | check_operand (operand, width, string) | |
798 | struct h8_op *operand; | |
799 | unsigned int width; | |
800 | char *string; | |
801 | { | |
802 | if (operand->exp.X_add_symbol == 0 | |
803 | && operand->exp.X_op_symbol == 0) | |
804 | { | |
805 | ||
806 | /* No symbol involved, let's look at offset, it's dangerous if any of | |
807 | the high bits are not 0 or ff's, find out by oring or anding with | |
808 | the width and seeing if the answer is 0 or all fs*/ | |
809 | ||
810 | if ((operand->exp.X_add_number & ~width) != 0 && | |
811 | (operand->exp.X_add_number | width) != (~0)) | |
812 | { | |
813 | if (width == 255 | |
814 | && (operand->exp.X_add_number & 0xff00) == 0xff00) | |
815 | { | |
816 | /* Just ignore this one - which happens when trying to | |
817 | fit a 16 bit address truncated into an 8 bit address | |
818 | of something like bset. */ | |
819 | } | |
820 | else | |
821 | { | |
822 | as_warn (_("operand %s0x%lx out of range."), string, | |
823 | (unsigned long) operand->exp.X_add_number); | |
824 | } | |
825 | } | |
826 | } | |
827 | ||
828 | } | |
829 | ||
830 | /* RELAXMODE has one of 3 values: | |
831 | ||
832 | 0 Output a "normal" reloc, no relaxing possible for this insn/reloc | |
833 | ||
834 | 1 Output a relaxable 24bit absolute mov.w address relocation | |
835 | (may relax into a 16bit absolute address). | |
836 | ||
837 | 2 Output a relaxable 16/24 absolute mov.b address relocation | |
838 | (may relax into an 8bit absolute address). */ | |
839 | ||
840 | static void | |
841 | do_a_fix_imm (offset, operand, relaxmode) | |
842 | int offset; | |
843 | struct h8_op *operand; | |
844 | int relaxmode; | |
845 | { | |
846 | int idx; | |
847 | int size; | |
848 | int where; | |
849 | ||
850 | ||
851 | char *t = operand->mode & IMM ? "#" : "@"; | |
852 | ||
853 | if (operand->exp.X_add_symbol == 0) | |
854 | { | |
855 | char *bytes = frag_now->fr_literal + offset; | |
856 | switch (operand->mode & SIZE) | |
857 | { | |
858 | case L_2: | |
859 | check_operand (operand, 0x3, t); | |
860 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
861 | break; | |
862 | case L_3: | |
863 | check_operand (operand, 0x7, t); | |
864 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
865 | break; | |
866 | case L_8: | |
867 | check_operand (operand, 0xff, t); | |
868 | bytes[0] = operand->exp.X_add_number; | |
869 | break; | |
870 | case L_16: | |
871 | check_operand (operand, 0xffff, t); | |
872 | bytes[0] = operand->exp.X_add_number >> 8; | |
873 | bytes[1] = operand->exp.X_add_number >> 0; | |
874 | break; | |
875 | case L_24: | |
876 | check_operand (operand, 0xffffff, t); | |
877 | bytes[0] = operand->exp.X_add_number >> 16; | |
878 | bytes[1] = operand->exp.X_add_number >> 8; | |
879 | bytes[2] = operand->exp.X_add_number >> 0; | |
880 | break; | |
881 | ||
882 | case L_32: | |
883 | /* This should be done with bfd */ | |
884 | bytes[0] = operand->exp.X_add_number >> 24; | |
885 | bytes[1] = operand->exp.X_add_number >> 16; | |
886 | bytes[2] = operand->exp.X_add_number >> 8; | |
887 | bytes[3] = operand->exp.X_add_number >> 0; | |
4132022d AM |
888 | if (relaxmode != 0) |
889 | { | |
890 | idx = (relaxmode == 2) ? R_MOV24B1 : R_MOVL1; | |
891 | fix_new_exp (frag_now, offset, 4, &operand->exp, 0, idx); | |
892 | } | |
252b5132 RH |
893 | break; |
894 | } | |
895 | ||
896 | } | |
897 | else | |
898 | { | |
899 | switch (operand->mode & SIZE) | |
900 | { | |
901 | ||
902 | case L_24: | |
903 | case L_32: | |
904 | size = 4; | |
905 | where = (operand->mode & SIZE) == L_24 ? -1 : 0; | |
906 | if (relaxmode == 2) | |
907 | idx = R_MOV24B1; | |
908 | else if (relaxmode == 1) | |
909 | idx = R_MOVL1; | |
910 | else | |
911 | idx = R_RELLONG; | |
912 | break; | |
913 | default: | |
914 | as_bad(_("Can't work out size of operand.\n")); | |
915 | case L_16: | |
916 | size = 2; | |
917 | where = 0; | |
918 | if (relaxmode == 2) | |
919 | idx = R_MOV16B1; | |
920 | else | |
921 | idx = R_RELWORD; | |
4132022d AM |
922 | operand->exp.X_add_number = |
923 | ((operand->exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; | |
252b5132 RH |
924 | break; |
925 | case L_8: | |
926 | size = 1; | |
927 | where = 0; | |
928 | idx = R_RELBYTE; | |
4132022d AM |
929 | operand->exp.X_add_number = |
930 | ((operand->exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 RH |
931 | } |
932 | ||
933 | fix_new_exp (frag_now, | |
934 | offset + where, | |
935 | size, | |
936 | &operand->exp, | |
937 | 0, | |
938 | idx); | |
939 | } | |
940 | ||
941 | } | |
942 | ||
943 | /* Now we know what sort of opcodes it is, lets build the bytes - | |
944 | */ | |
945 | static void | |
946 | build_bytes (this_try, operand) | |
947 | struct h8_opcode *this_try; | |
948 | struct h8_op *operand; | |
949 | { | |
950 | unsigned int i; | |
951 | ||
952 | char *output = frag_more (this_try->length); | |
953 | op_type *nibble_ptr = this_try->data.nib; | |
954 | op_type c; | |
955 | unsigned int nibble_count = 0; | |
956 | int absat; | |
957 | int immat; | |
958 | int nib; | |
959 | int movb = 0; | |
960 | char asnibbles[30]; | |
961 | char *p = asnibbles; | |
962 | ||
963 | if (!(this_try->inbase || Hmode)) | |
964 | as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"), | |
965 | this_try->name); | |
966 | ||
967 | while (*nibble_ptr != E) | |
968 | { | |
969 | int d; | |
970 | c = *nibble_ptr++; | |
971 | ||
972 | d = (c & (DST | SRC_IN_DST)) != 0; | |
973 | ||
974 | if (c < 16) | |
975 | { | |
976 | nib = c; | |
977 | } | |
978 | else | |
979 | { | |
980 | ||
981 | if (c & (REG | IND | INC | DEC)) | |
982 | { | |
983 | nib = operand[d].reg; | |
984 | } | |
985 | else if ((c & DISPREG) == (DISPREG)) | |
986 | { | |
987 | nib = dispreg; | |
988 | } | |
989 | else if (c & ABS ) | |
990 | { | |
991 | operand[d].mode = c; | |
992 | absat = nibble_count / 2; | |
993 | nib = 0; | |
994 | } | |
995 | else if (c & (IMM | PCREL | ABS | ABSJMP | DISP)) | |
996 | { | |
997 | operand[d].mode = c; | |
998 | immat = nibble_count / 2; | |
999 | nib = 0; | |
1000 | } | |
1001 | else if (c & IGNORE) | |
1002 | { | |
1003 | nib = 0; | |
1004 | } | |
1005 | else if (c & DBIT) | |
1006 | { | |
1007 | switch (operand[0].exp.X_add_number) | |
1008 | { | |
1009 | case 1: | |
1010 | nib = c; | |
1011 | break; | |
1012 | case 2: | |
1013 | nib = 0x8 | c; | |
1014 | break; | |
1015 | default: | |
1016 | as_bad (_("Need #1 or #2 here")); | |
1017 | } | |
1018 | } | |
1019 | else if (c & KBIT) | |
1020 | { | |
1021 | switch (operand[0].exp.X_add_number) | |
1022 | { | |
1023 | case 1: | |
1024 | nib = 0; | |
1025 | break; | |
1026 | case 2: | |
1027 | nib = 8; | |
1028 | break; | |
1029 | case 4: | |
1030 | if (!Hmode) | |
1031 | as_warn (_("#4 not valid on H8/300.")); | |
1032 | nib = 9; | |
1033 | break; | |
1034 | ||
1035 | default: | |
1036 | as_bad (_("Need #1 or #2 here")); | |
1037 | break; | |
1038 | } | |
1039 | /* stop it making a fix */ | |
1040 | operand[0].mode = 0; | |
1041 | } | |
1042 | ||
1043 | if (c & MEMRELAX) | |
1044 | { | |
1045 | operand[d].mode |= MEMRELAX; | |
1046 | } | |
1047 | ||
1048 | if (c & B31) | |
1049 | { | |
1050 | nib |= 0x8; | |
1051 | } | |
1052 | ||
1053 | if (c & MACREG) | |
1054 | { | |
1055 | nib = 2 + operand[d].reg; | |
1056 | } | |
1057 | } | |
1058 | nibble_count++; | |
1059 | ||
1060 | *p++ = nib; | |
1061 | } | |
1062 | ||
1063 | /* Disgusting. Why, oh why didn't someone ask us for advice | |
1064 | on the assembler format. */ | |
1065 | if (strcmp (this_try->name, "stm.l") == 0 | |
1066 | || strcmp (this_try->name, "ldm.l") == 0) | |
1067 | { | |
1068 | int high, low; | |
1069 | high = (operand[this_try->name[0] == 'l' ? 1 : 0].reg >> 8) & 0xf; | |
1070 | low = operand[this_try->name[0] == 'l' ? 1 : 0].reg & 0xf; | |
1071 | ||
1072 | asnibbles[2] = high - low; | |
1073 | asnibbles[7] = (this_try->name[0] == 'l') ? high : low; | |
1074 | } | |
1075 | ||
1076 | for (i = 0; i < this_try->length; i++) | |
1077 | { | |
1078 | output[i] = (asnibbles[i * 2] << 4) | asnibbles[i * 2 + 1]; | |
1079 | } | |
1080 | ||
1081 | /* Note if this is a movb instruction -- there's a special relaxation | |
1082 | which only applies to them. */ | |
1083 | if (strcmp (this_try->name, "mov.b") == 0) | |
1084 | movb = 1; | |
1085 | ||
1086 | /* output any fixes */ | |
1087 | for (i = 0; i < 2; i++) | |
1088 | { | |
1089 | int x = operand[i].mode; | |
1090 | ||
1091 | if (x & (IMM | DISP)) | |
1092 | { | |
1093 | do_a_fix_imm (output - frag_now->fr_literal + immat, | |
1094 | operand + i, x & MEMRELAX != 0); | |
1095 | } | |
1096 | else if (x & ABS) | |
1097 | { | |
1098 | do_a_fix_imm (output - frag_now->fr_literal + absat, | |
1099 | operand + i, x & MEMRELAX ? movb + 1 : 0); | |
1100 | } | |
1101 | else if (x & PCREL) | |
1102 | { | |
1103 | int size16 = x & L_16; | |
1104 | int where = size16 ? 2 : 1; | |
1105 | int size = size16 ? 2 : 1; | |
1106 | int type = size16 ? R_PCRWORD : R_PCRBYTE; | |
1107 | ||
1108 | check_operand (operand + i, size16 ? 0x7fff : 0x7f, "@"); | |
1109 | ||
1110 | if (operand[i].exp.X_add_number & 1) | |
1111 | { | |
1112 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1113 | (unsigned long) operand->exp.X_add_number); | |
1114 | } | |
1115 | ||
1116 | operand[i].exp.X_add_number -= 1; | |
4132022d AM |
1117 | operand[i].exp.X_add_number = |
1118 | ((operand[i].exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 RH |
1119 | |
1120 | fix_new_exp (frag_now, | |
1121 | output - frag_now->fr_literal + where, | |
1122 | size, | |
1123 | &operand[i].exp, | |
1124 | 1, | |
1125 | type); | |
1126 | } | |
1127 | else if (x & MEMIND) | |
1128 | { | |
1129 | ||
1130 | check_operand (operand + i, 0xff, "@@"); | |
1131 | fix_new_exp (frag_now, | |
1132 | output - frag_now->fr_literal + 1, | |
1133 | 1, | |
1134 | &operand[i].exp, | |
1135 | 0, | |
1136 | R_MEM_INDIRECT); | |
1137 | } | |
1138 | else if (x & ABSJMP) | |
1139 | { | |
1140 | /* This jmp may be a jump or a branch */ | |
1141 | ||
1142 | check_operand (operand + i, Hmode ? 0xffffff : 0xffff, "@"); | |
1143 | if (operand[i].exp.X_add_number & 1) | |
1144 | { | |
1145 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1146 | (unsigned long) operand->exp.X_add_number); | |
1147 | } | |
1148 | if (!Hmode) | |
4132022d AM |
1149 | operand[i].exp.X_add_number = |
1150 | ((operand[i].exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; | |
252b5132 RH |
1151 | fix_new_exp (frag_now, |
1152 | output - frag_now->fr_literal, | |
1153 | 4, | |
1154 | &operand[i].exp, | |
1155 | 0, | |
1156 | R_JMPL1); | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | } | |
1161 | ||
1162 | /* | |
1163 | try and give an intelligent error message for common and simple to | |
1164 | detect errors | |
1165 | */ | |
1166 | ||
1167 | static void | |
1168 | clever_message (opcode, operand) | |
1169 | struct h8_opcode *opcode; | |
1170 | struct h8_op *operand; | |
1171 | { | |
1172 | /* Find out if there was more than one possible opccode */ | |
1173 | ||
1174 | if ((opcode + 1)->idx != opcode->idx) | |
1175 | { | |
1176 | unsigned int argn; | |
1177 | ||
1178 | /* Only one opcode of this flavour, try and guess which operand | |
1179 | didn't match */ | |
1180 | for (argn = 0; argn < opcode->noperands; argn++) | |
1181 | { | |
1182 | switch (opcode->args.nib[argn]) | |
1183 | { | |
1184 | case RD16: | |
1185 | if (operand[argn].mode != RD16) | |
1186 | { | |
1187 | as_bad (_("destination operand must be 16 bit register")); | |
1188 | return; | |
1189 | ||
1190 | } | |
1191 | break; | |
1192 | ||
1193 | case RS8: | |
1194 | ||
1195 | if (operand[argn].mode != RS8) | |
1196 | { | |
1197 | as_bad (_("source operand must be 8 bit register")); | |
1198 | return; | |
1199 | } | |
1200 | break; | |
1201 | ||
1202 | case ABS16DST: | |
1203 | if (operand[argn].mode != ABS16DST) | |
1204 | { | |
1205 | as_bad (_("destination operand must be 16bit absolute address")); | |
1206 | return; | |
1207 | } | |
1208 | break; | |
1209 | case RD8: | |
1210 | if (operand[argn].mode != RD8) | |
1211 | { | |
1212 | as_bad (_("destination operand must be 8 bit register")); | |
1213 | return; | |
1214 | } | |
1215 | break; | |
1216 | ||
1217 | ||
1218 | case ABS16SRC: | |
1219 | if (operand[argn].mode != ABS16SRC) | |
1220 | { | |
1221 | as_bad (_("source operand must be 16bit absolute address")); | |
1222 | return; | |
1223 | } | |
1224 | break; | |
1225 | ||
1226 | } | |
1227 | } | |
1228 | } | |
1229 | as_bad (_("invalid operands")); | |
1230 | } | |
1231 | ||
1232 | /* This is the guts of the machine-dependent assembler. STR points to a | |
1233 | machine dependent instruction. This funciton is supposed to emit | |
1234 | the frags/bytes it assembles to. | |
1235 | */ | |
1236 | ||
1237 | ||
1238 | ||
1239 | void | |
1240 | md_assemble (str) | |
1241 | char *str; | |
1242 | { | |
1243 | char *op_start; | |
1244 | char *op_end; | |
1245 | struct h8_op operand[2]; | |
1246 | struct h8_opcode *opcode; | |
1247 | struct h8_opcode *prev_opcode; | |
1248 | ||
1249 | char *dot = 0; | |
1250 | char c; | |
1251 | int size; | |
1252 | ||
1253 | /* Drop leading whitespace */ | |
1254 | while (*str == ' ') | |
1255 | str++; | |
1256 | ||
1257 | /* find the op code end */ | |
1258 | for (op_start = op_end = str; | |
1259 | *op_end != 0 && *op_end != ' '; | |
1260 | op_end++) | |
1261 | { | |
1262 | if (*op_end == '.') | |
1263 | { | |
1264 | dot = op_end + 1; | |
1265 | *op_end = 0; | |
1266 | op_end += 2; | |
1267 | break; | |
1268 | } | |
1269 | } | |
1270 | ||
1271 | ; | |
1272 | ||
1273 | if (op_end == op_start) | |
1274 | { | |
1275 | as_bad (_("can't find opcode ")); | |
1276 | } | |
1277 | c = *op_end; | |
1278 | ||
1279 | *op_end = 0; | |
1280 | ||
1281 | opcode = (struct h8_opcode *) hash_find (opcode_hash_control, | |
1282 | op_start); | |
1283 | ||
1284 | if (opcode == NULL) | |
1285 | { | |
1286 | as_bad (_("unknown opcode")); | |
1287 | return; | |
1288 | } | |
1289 | ||
1290 | /* We use to set input_line_pointer to the result of get_operands, | |
1291 | but that is wrong. Our caller assumes we don't change it. */ | |
1292 | ||
1293 | (void) get_operands (opcode->noperands, op_end, operand); | |
1294 | *op_end = c; | |
1295 | prev_opcode = opcode; | |
1296 | ||
1297 | size = SN; | |
1298 | if (dot) | |
1299 | { | |
1300 | switch (*dot) | |
1301 | { | |
1302 | case 'b': | |
1303 | size = SB; | |
1304 | break; | |
1305 | ||
1306 | case 'w': | |
1307 | size = SW; | |
1308 | break; | |
1309 | ||
1310 | case 'l': | |
1311 | size = SL; | |
1312 | break; | |
1313 | } | |
1314 | } | |
1315 | opcode = get_specific (opcode, operand, size); | |
1316 | ||
1317 | if (opcode == 0) | |
1318 | { | |
1319 | /* Couldn't find an opcode which matched the operands */ | |
1320 | char *where = frag_more (2); | |
1321 | ||
1322 | where[0] = 0x0; | |
1323 | where[1] = 0x0; | |
1324 | clever_message (prev_opcode, operand); | |
1325 | ||
1326 | return; | |
1327 | } | |
1328 | if (opcode->size && dot) | |
1329 | { | |
1330 | if (opcode->size != *dot) | |
1331 | { | |
1332 | as_warn (_("mismatch between opcode size and operand size")); | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | build_bytes (opcode, operand); | |
1337 | ||
1338 | } | |
1339 | ||
1340 | void | |
1341 | tc_crawl_symbol_chain (headers) | |
dbbc7809 | 1342 | object_headers * headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1343 | { |
1344 | printf (_("call to tc_crawl_symbol_chain \n")); | |
1345 | } | |
1346 | ||
1347 | symbolS * | |
1348 | md_undefined_symbol (name) | |
dbbc7809 | 1349 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
1350 | { |
1351 | return 0; | |
1352 | } | |
1353 | ||
1354 | void | |
1355 | tc_headers_hook (headers) | |
dbbc7809 | 1356 | object_headers * headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1357 | { |
1358 | printf (_("call to tc_headers_hook \n")); | |
1359 | } | |
1360 | ||
1361 | /* Various routines to kill one day */ | |
1362 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1363 | #define MAX_LITTLENUMS 6 | |
1364 | ||
1365 | /* Turn a string in input_line_pointer into a floating point constant of type | |
1366 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1367 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. | |
1368 | */ | |
1369 | char * | |
1370 | md_atof (type, litP, sizeP) | |
1371 | char type; | |
1372 | char *litP; | |
1373 | int *sizeP; | |
1374 | { | |
1375 | int prec; | |
1376 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1377 | LITTLENUM_TYPE *wordP; | |
1378 | char *t; | |
1379 | char *atof_ieee (); | |
1380 | ||
1381 | switch (type) | |
1382 | { | |
1383 | case 'f': | |
1384 | case 'F': | |
1385 | case 's': | |
1386 | case 'S': | |
1387 | prec = 2; | |
1388 | break; | |
1389 | ||
1390 | case 'd': | |
1391 | case 'D': | |
1392 | case 'r': | |
1393 | case 'R': | |
1394 | prec = 4; | |
1395 | break; | |
1396 | ||
1397 | case 'x': | |
1398 | case 'X': | |
1399 | prec = 6; | |
1400 | break; | |
1401 | ||
1402 | case 'p': | |
1403 | case 'P': | |
1404 | prec = 6; | |
1405 | break; | |
1406 | ||
1407 | default: | |
1408 | *sizeP = 0; | |
1409 | return _("Bad call to MD_ATOF()"); | |
1410 | } | |
1411 | t = atof_ieee (input_line_pointer, type, words); | |
1412 | if (t) | |
1413 | input_line_pointer = t; | |
1414 | ||
1415 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1416 | for (wordP = words; prec--;) | |
1417 | { | |
1418 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1419 | litP += sizeof (LITTLENUM_TYPE); | |
1420 | } | |
1421 | return 0; | |
1422 | } | |
1423 | \f | |
1424 | CONST char *md_shortopts = ""; | |
1425 | struct option md_longopts[] = { | |
1426 | {NULL, no_argument, NULL, 0} | |
1427 | }; | |
1428 | size_t md_longopts_size = sizeof(md_longopts); | |
1429 | ||
1430 | int | |
1431 | md_parse_option (c, arg) | |
dbbc7809 JL |
1432 | int c ATTRIBUTE_UNUSED; |
1433 | char *arg ATTRIBUTE_UNUSED; | |
252b5132 RH |
1434 | { |
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | void | |
1439 | md_show_usage (stream) | |
dbbc7809 | 1440 | FILE *stream ATTRIBUTE_UNUSED; |
252b5132 RH |
1441 | { |
1442 | } | |
1443 | \f | |
1444 | void | |
1445 | tc_aout_fix_to_chars () | |
1446 | { | |
1447 | printf (_("call to tc_aout_fix_to_chars \n")); | |
1448 | abort (); | |
1449 | } | |
1450 | ||
1451 | void | |
1452 | md_convert_frag (headers, seg, fragP) | |
dbbc7809 JL |
1453 | object_headers *headers ATTRIBUTE_UNUSED; |
1454 | segT seg ATTRIBUTE_UNUSED; | |
1455 | fragS *fragP ATTRIBUTE_UNUSED; | |
252b5132 RH |
1456 | { |
1457 | printf (_("call to md_convert_frag \n")); | |
1458 | abort (); | |
1459 | } | |
1460 | ||
1461 | valueT | |
1462 | md_section_align (seg, size) | |
1463 | segT seg; | |
1464 | valueT size; | |
1465 | { | |
1466 | return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg])); | |
1467 | ||
1468 | } | |
1469 | ||
1470 | void | |
1471 | md_apply_fix (fixP, val) | |
1472 | fixS *fixP; | |
1473 | long val; | |
1474 | { | |
1475 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1476 | ||
1477 | switch (fixP->fx_size) | |
1478 | { | |
1479 | case 1: | |
1480 | *buf++ = val; | |
1481 | break; | |
1482 | case 2: | |
1483 | *buf++ = (val >> 8); | |
1484 | *buf++ = val; | |
1485 | break; | |
1486 | case 4: | |
1487 | *buf++ = (val >> 24); | |
1488 | *buf++ = (val >> 16); | |
1489 | *buf++ = (val >> 8); | |
1490 | *buf++ = val; | |
1491 | break; | |
1492 | default: | |
1493 | abort (); | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | int | |
1498 | md_estimate_size_before_relax (fragP, segment_type) | |
dbbc7809 JL |
1499 | register fragS *fragP ATTRIBUTE_UNUSED; |
1500 | register segT segment_type ATTRIBUTE_UNUSED; | |
252b5132 RH |
1501 | { |
1502 | printf (_("call tomd_estimate_size_before_relax \n")); | |
1503 | abort (); | |
1504 | } | |
1505 | ||
1506 | /* Put number into target byte order */ | |
1507 | ||
1508 | void | |
1509 | md_number_to_chars (ptr, use, nbytes) | |
1510 | char *ptr; | |
1511 | valueT use; | |
1512 | int nbytes; | |
1513 | { | |
1514 | number_to_chars_bigendian (ptr, use, nbytes); | |
1515 | } | |
1516 | long | |
1517 | md_pcrel_from (fixP) | |
dbbc7809 | 1518 | fixS *fixP ATTRIBUTE_UNUSED; |
252b5132 RH |
1519 | { |
1520 | abort (); | |
1521 | } | |
1522 | ||
1523 | ||
1524 | void | |
1525 | tc_reloc_mangle (fix_ptr, intr, base) | |
1526 | fixS *fix_ptr; | |
1527 | struct internal_reloc *intr; | |
1528 | bfd_vma base; | |
1529 | ||
1530 | { | |
1531 | symbolS *symbol_ptr; | |
1532 | ||
1533 | symbol_ptr = fix_ptr->fx_addsy; | |
1534 | ||
1535 | /* If this relocation is attached to a symbol then it's ok | |
1536 | to output it */ | |
1537 | if (fix_ptr->fx_r_type == TC_CONS_RELOC) | |
1538 | { | |
1539 | /* cons likes to create reloc32's whatever the size of the reloc.. | |
1540 | */ | |
1541 | switch (fix_ptr->fx_size) | |
1542 | { | |
1543 | case 4: | |
1544 | intr->r_type = R_RELLONG; | |
1545 | break; | |
1546 | case 2: | |
1547 | intr->r_type = R_RELWORD; | |
1548 | break; | |
1549 | case 1: | |
1550 | intr->r_type = R_RELBYTE; | |
1551 | break; | |
1552 | default: | |
1553 | abort (); | |
1554 | ||
1555 | } | |
1556 | ||
1557 | } | |
1558 | else | |
1559 | { | |
1560 | intr->r_type = fix_ptr->fx_r_type; | |
1561 | } | |
1562 | ||
1563 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; | |
1564 | intr->r_offset = fix_ptr->fx_offset; | |
1565 | ||
1566 | if (symbol_ptr) | |
1567 | { | |
1568 | if (symbol_ptr->sy_number != -1) | |
1569 | intr->r_symndx = symbol_ptr->sy_number; | |
1570 | else | |
1571 | { | |
1572 | symbolS *segsym; | |
1573 | ||
1574 | /* This case arises when a reference is made to `.'. */ | |
1575 | segsym = seg_info (S_GET_SEGMENT (symbol_ptr))->dot; | |
1576 | if (segsym == NULL) | |
1577 | intr->r_symndx = -1; | |
1578 | else | |
1579 | { | |
1580 | intr->r_symndx = segsym->sy_number; | |
1581 | intr->r_offset += S_GET_VALUE (symbol_ptr); | |
1582 | } | |
1583 | } | |
1584 | } | |
1585 | else | |
1586 | intr->r_symndx = -1; | |
1587 | ||
1588 | ||
1589 | } | |
1590 | ||
1591 | /* end of tc-h8300.c */ |