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252b5132 RH |
1 | /* tc-h8300.c -- Assemble code for the Hitachi H8/300 |
2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 1998 Free Software Foundation. | |
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 | |
18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
20 | ||
21 | ||
22 | /* | |
23 | Written By Steve Chamberlain | |
24 | sac@cygnus.com | |
25 | */ | |
26 | ||
27 | #include <stdio.h> | |
28 | #include "as.h" | |
29 | #include "subsegs.h" | |
30 | #include "bfd.h" | |
31 | #define DEFINE_TABLE | |
32 | #define h8_opcodes ops | |
33 | #include "opcode/h8300.h" | |
34 | #include <ctype.h> | |
35 | ||
36 | const char comment_chars[] = | |
37 | {';', 0}; | |
38 | const char line_separator_chars[] = | |
39 | {0}; | |
40 | const char line_comment_chars[] = "#"; | |
41 | ||
42 | /* This table describes all the machine specific pseudo-ops the assembler | |
43 | has to support. The fields are: | |
44 | pseudo-op name without dot | |
45 | function to call to execute this pseudo-op | |
46 | Integer arg to pass to the function | |
47 | */ | |
48 | ||
49 | void cons (); | |
50 | ||
51 | int Hmode; | |
52 | int Smode; | |
53 | #define PSIZE (Hmode ? L_32 : L_16) | |
54 | #define DMODE (L_16) | |
55 | #define DSYMMODE (Hmode ? L_24 : L_16) | |
56 | int bsize = L_8; /* default branch displacement */ | |
57 | ||
58 | ||
59 | void | |
60 | h8300hmode () | |
61 | { | |
62 | Hmode = 1; | |
63 | Smode = 0; | |
64 | } | |
65 | ||
66 | void | |
67 | h8300smode () | |
68 | { | |
69 | Smode = 1; | |
70 | Hmode = 1; | |
71 | } | |
72 | void | |
73 | sbranch (size) | |
74 | int size; | |
75 | { | |
76 | bsize = size; | |
77 | } | |
78 | ||
79 | static void pint () | |
80 | { | |
81 | cons (Hmode ? 4 : 2); | |
82 | } | |
83 | ||
84 | const pseudo_typeS md_pseudo_table[] = | |
85 | { | |
86 | ||
87 | {"h8300h", h8300hmode, 0}, | |
88 | {"h8300s", h8300smode, 0}, | |
89 | {"sbranch", sbranch, L_8}, | |
90 | {"lbranch", sbranch, L_16}, | |
91 | ||
92 | {"int", pint, 0}, | |
93 | {"data.b", cons, 1}, | |
94 | {"data.w", cons, 2}, | |
95 | {"data.l", cons, 4}, | |
96 | {"form", listing_psize, 0}, | |
97 | {"heading", listing_title, 0}, | |
98 | {"import", s_ignore, 0}, | |
99 | {"page", listing_eject, 0}, | |
100 | {"program", s_ignore, 0}, | |
101 | {0, 0, 0} | |
102 | }; | |
103 | ||
104 | const int md_reloc_size; | |
105 | ||
106 | const char EXP_CHARS[] = "eE"; | |
107 | ||
108 | /* Chars that mean this number is a floating point constant */ | |
109 | /* As in 0f12.456 */ | |
110 | /* or 0d1.2345e12 */ | |
111 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
112 | ||
113 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ | |
114 | ||
115 | /* | |
116 | This function is called once, at assembler startup time. This should | |
117 | set up all the tables, etc that the MD part of the assembler needs | |
118 | */ | |
119 | ||
120 | ||
121 | void | |
122 | md_begin () | |
123 | { | |
124 | struct h8_opcode *opcode; | |
125 | char prev_buffer[100]; | |
126 | int idx = 0; | |
127 | ||
128 | opcode_hash_control = hash_new (); | |
129 | prev_buffer[0] = 0; | |
130 | ||
131 | for (opcode = h8_opcodes; opcode->name; opcode++) | |
132 | { | |
133 | /* Strip off any . part when inserting the opcode and only enter | |
134 | unique codes into the hash table | |
135 | */ | |
136 | char *src = opcode->name; | |
137 | unsigned int len = strlen (src); | |
138 | char *dst = malloc (len + 1); | |
139 | char *buffer = dst; | |
140 | ||
141 | opcode->size = 0; | |
142 | while (*src) | |
143 | { | |
144 | if (*src == '.') | |
145 | { | |
146 | src++; | |
147 | opcode->size = *src; | |
148 | break; | |
149 | } | |
150 | *dst++ = *src++; | |
151 | } | |
152 | *dst++ = 0; | |
153 | if (strcmp (buffer, prev_buffer)) | |
154 | { | |
155 | hash_insert (opcode_hash_control, buffer, (char *) opcode); | |
156 | strcpy (prev_buffer, buffer); | |
157 | idx++; | |
158 | } | |
159 | opcode->idx = idx; | |
160 | ||
161 | ||
162 | /* Find the number of operands */ | |
163 | opcode->noperands = 0; | |
164 | while (opcode->args.nib[opcode->noperands] != E) | |
165 | opcode->noperands++; | |
166 | /* Find the length of the opcode in bytes */ | |
167 | opcode->length = 0; | |
168 | while (opcode->data.nib[opcode->length * 2] != E) | |
169 | opcode->length++; | |
170 | } | |
171 | ||
172 | linkrelax = 1; | |
173 | } | |
174 | ||
175 | ||
176 | struct h8_exp | |
177 | { | |
178 | char *e_beg; | |
179 | char *e_end; | |
180 | expressionS e_exp; | |
181 | }; | |
182 | int dispreg; | |
183 | int opsize; /* Set when a register size is seen */ | |
184 | ||
185 | ||
186 | struct h8_op | |
187 | { | |
188 | op_type mode; | |
189 | unsigned reg; | |
190 | expressionS exp; | |
191 | }; | |
192 | ||
193 | /* | |
194 | parse operands | |
195 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp | |
196 | r0l,r0h,..r7l,r7h | |
197 | @WREG | |
198 | @WREG+ | |
199 | @-WREG | |
200 | #const | |
201 | ccr | |
202 | */ | |
203 | ||
204 | /* try and parse a reg name, returns number of chars consumed */ | |
205 | int | |
206 | parse_reg (src, mode, reg, direction) | |
207 | char *src; | |
208 | op_type *mode; | |
209 | unsigned int *reg; | |
210 | int direction; | |
211 | ||
212 | { | |
213 | char *end; | |
214 | int len; | |
215 | ||
216 | /* Cribbed from get_symbol_end(). */ | |
217 | if (!is_name_beginner (*src) || *src == '\001') | |
218 | return 0; | |
219 | end = src+1; | |
220 | while (is_part_of_name (*end) || *end == '\001') | |
221 | end++; | |
222 | len = end - src; | |
223 | ||
224 | if (len == 2 && src[0] == 's' && src[1] == 'p') | |
225 | { | |
226 | *mode = PSIZE | REG | direction; | |
227 | *reg = 7; | |
228 | return len; | |
229 | } | |
230 | if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r') | |
231 | { | |
232 | *mode = CCR; | |
233 | *reg = 0; | |
234 | return len; | |
235 | } | |
236 | if (len == 3 && src[0] == 'e' && src[1] == 'x' && src[2] == 'r') | |
237 | { | |
238 | *mode = EXR; | |
239 | *reg = 0; | |
240 | return len; | |
241 | } | |
242 | if (len == 2 && src[0] == 'f' && src[1] == 'p') | |
243 | { | |
244 | *mode = PSIZE | REG | direction; | |
245 | *reg = 6; | |
246 | return len; | |
247 | } | |
248 | if (len == 3 && src[0] == 'e' && src[1] == 'r' | |
249 | && src[2] >= '0' && src[2] <= '7') | |
250 | { | |
251 | *mode = L_32 | REG | direction; | |
252 | *reg = src[2] - '0'; | |
253 | if (!Hmode) | |
254 | as_warn (_("Reg not valid for H8/300")); | |
255 | return len; | |
256 | } | |
257 | if (len == 2 && src[0] == 'e' && src[1] >= '0' && src[1] <= '7') | |
258 | { | |
259 | *mode = L_16 | REG | direction; | |
260 | *reg = src[1] - '0' + 8; | |
261 | if (!Hmode) | |
262 | as_warn (_("Reg not valid for H8/300")); | |
263 | return len; | |
264 | } | |
265 | ||
266 | if (src[0] == 'r') | |
267 | { | |
268 | if (src[1] >= '0' && src[1] <= '7') | |
269 | { | |
270 | if (len == 3 && src[2] == 'l') | |
271 | { | |
272 | *mode = L_8 | REG | direction; | |
273 | *reg = (src[1] - '0') + 8; | |
274 | return len; | |
275 | } | |
276 | if (len == 3 && src[2] == 'h') | |
277 | { | |
278 | *mode = L_8 | REG | direction; | |
279 | *reg = (src[1] - '0'); | |
280 | return len; | |
281 | } | |
282 | if (len == 2) | |
283 | { | |
284 | *mode = L_16 | REG | direction; | |
285 | *reg = (src[1] - '0'); | |
286 | return len; | |
287 | } | |
288 | } | |
289 | } | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | char * | |
295 | parse_exp (s, op) | |
296 | char *s; | |
297 | expressionS * op; | |
298 | { | |
299 | char *save = input_line_pointer; | |
300 | char *new; | |
301 | ||
302 | input_line_pointer = s; | |
303 | expression (op); | |
304 | if (op->X_op == O_absent) | |
305 | as_bad (_("missing operand")); | |
306 | new = input_line_pointer; | |
307 | input_line_pointer = save; | |
308 | return new; | |
309 | } | |
310 | ||
311 | static char * | |
312 | skip_colonthing (ptr, exp, mode) | |
313 | char *ptr; | |
314 | expressionS *exp; | |
315 | int *mode; | |
316 | { | |
317 | if (*ptr == ':') | |
318 | { | |
319 | ptr++; | |
320 | *mode &= ~SIZE; | |
321 | if (*ptr == '8') | |
322 | { | |
323 | ptr++; | |
324 | /* ff fill any 8 bit quantity */ | |
325 | /* exp->X_add_number -= 0x100;*/ | |
326 | *mode |= L_8; | |
327 | } | |
328 | else | |
329 | { | |
330 | if (*ptr == '2') | |
331 | { | |
332 | *mode |= L_24; | |
333 | } | |
334 | else if (*ptr == '3') | |
335 | { | |
336 | *mode |= L_32; | |
337 | } | |
338 | else if (*ptr == '1') | |
339 | { | |
340 | *mode |= L_16; | |
341 | } | |
342 | while (isdigit (*ptr)) | |
343 | ptr++; | |
344 | } | |
345 | } | |
346 | return ptr; | |
347 | } | |
348 | ||
349 | /* The many forms of operand: | |
350 | ||
351 | Rn Register direct | |
352 | @Rn Register indirect | |
353 | @(exp[:16], Rn) Register indirect with displacement | |
354 | @Rn+ | |
355 | @-Rn | |
356 | @aa:8 absolute 8 bit | |
357 | @aa:16 absolute 16 bit | |
358 | @aa absolute 16 bit | |
359 | ||
360 | #xx[:size] immediate data | |
361 | @(exp:[8], pc) pc rel | |
362 | @@aa[:8] memory indirect | |
363 | ||
364 | */ | |
365 | ||
366 | char * | |
367 | colonmod24 (op, src) | |
368 | struct h8_op *op; | |
369 | char *src; | |
370 | ||
371 | { | |
372 | int mode = 0; | |
373 | src = skip_colonthing (src, &op->exp, &mode); | |
374 | ||
375 | if (!mode) | |
376 | { | |
377 | /* Choose a default mode */ | |
378 | if (op->exp.X_add_number < -32768 | |
379 | || op->exp.X_add_number > 32767) | |
380 | { | |
381 | if (Hmode) | |
382 | mode = L_24; | |
383 | else | |
384 | mode = L_16; | |
385 | } | |
386 | else if (op->exp.X_add_symbol | |
387 | || op->exp.X_op_symbol) | |
388 | mode = DSYMMODE; | |
389 | else | |
390 | mode = DMODE; | |
391 | } | |
392 | op->mode |= mode; | |
393 | return src; | |
394 | ||
395 | } | |
396 | ||
397 | ||
398 | static void | |
399 | get_operand (ptr, op, dst, direction) | |
400 | char **ptr; | |
401 | struct h8_op *op; | |
402 | unsigned int dst; | |
403 | int direction; | |
404 | { | |
405 | char *src = *ptr; | |
406 | op_type mode; | |
407 | unsigned int num; | |
408 | unsigned int len; | |
409 | ||
410 | op->mode = E; | |
411 | ||
412 | /* Gross. Gross. ldm and stm have a format not easily handled | |
413 | by get_operand. We deal with it explicitly here. */ | |
414 | if (src[0] == 'e' && src[1] == 'r' && isdigit(src[2]) | |
415 | && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && isdigit(src[6])) | |
416 | { | |
417 | int low, high; | |
418 | ||
419 | low = src[2] - '0'; | |
420 | high = src[6] - '0'; | |
421 | ||
422 | if (high < low) | |
423 | as_bad (_("Invalid register list for ldm/stm\n")); | |
424 | ||
425 | if (low % 2) | |
426 | as_bad (_("Invalid register list for ldm/stm\n")); | |
427 | ||
428 | if (high - low > 3) | |
429 | as_bad (_("Invalid register list for ldm/stm\n")); | |
430 | ||
431 | if (high - low != 1 | |
432 | && low % 4) | |
433 | as_bad (_("Invalid register list for ldm/stm\n")); | |
434 | ||
435 | /* Even sicker. We encode two registers into op->reg. One | |
436 | for the low register to save, the other for the high | |
437 | register to save; we also set the high bit in op->reg | |
438 | so we know this is "very special". */ | |
439 | op->reg = 0x80000000 | (high << 8) | low; | |
440 | op->mode = REG; | |
441 | *ptr = src + 7; | |
442 | return; | |
443 | } | |
444 | ||
445 | len = parse_reg (src, &op->mode, &op->reg, direction); | |
446 | if (len) | |
447 | { | |
448 | *ptr = src + len; | |
449 | return; | |
450 | } | |
451 | ||
452 | if (*src == '@') | |
453 | { | |
454 | src++; | |
455 | if (*src == '@') | |
456 | { | |
457 | src++; | |
458 | src = parse_exp (src, &op->exp); | |
459 | ||
460 | src = skip_colonthing (src, &op->exp, &op->mode); | |
461 | ||
462 | *ptr = src; | |
463 | ||
464 | op->mode = MEMIND; | |
465 | return; | |
466 | ||
467 | } | |
468 | ||
469 | ||
470 | if (*src == '-') | |
471 | { | |
472 | src++; | |
473 | len = parse_reg (src, &mode, &num, direction); | |
474 | if (len == 0) | |
475 | { | |
476 | /* Oops, not a reg after all, must be ordinary exp */ | |
477 | src--; | |
478 | /* must be a symbol */ | |
479 | op->mode = ABS | PSIZE | direction; | |
480 | *ptr = skip_colonthing (parse_exp (src, &op->exp), | |
481 | &op->exp, &op->mode); | |
482 | ||
483 | return; | |
484 | ||
485 | ||
486 | } | |
487 | ||
488 | ||
489 | if ((mode & SIZE) != PSIZE) | |
490 | as_bad (_("Wrong size pointer register for architecture.")); | |
491 | op->mode = RDDEC; | |
492 | op->reg = num; | |
493 | *ptr = src + len; | |
494 | return; | |
495 | } | |
496 | if (*src == '(') | |
497 | { | |
498 | /* Disp */ | |
499 | src++; | |
500 | ||
501 | /* Start off assuming a 16 bit offset */ | |
502 | ||
503 | ||
504 | src = parse_exp (src, &op->exp); | |
505 | ||
506 | src = colonmod24 (op, src); | |
507 | ||
508 | if (*src == ')') | |
509 | { | |
510 | src++; | |
511 | op->mode |= ABS | direction; | |
512 | *ptr = src; | |
513 | return; | |
514 | } | |
515 | ||
516 | if (*src != ',') | |
517 | { | |
518 | as_bad (_("expected @(exp, reg16)")); | |
519 | return; | |
520 | ||
521 | } | |
522 | src++; | |
523 | ||
524 | len = parse_reg (src, &mode, &op->reg, direction); | |
525 | if (len == 0 || !(mode & REG)) | |
526 | { | |
527 | as_bad (_("expected @(exp, reg16)")); | |
528 | return; | |
529 | } | |
530 | op->mode |= DISP | direction; | |
531 | dispreg = op->reg; | |
532 | src += len; | |
533 | src = skip_colonthing (src, &op->exp, &op->mode); | |
534 | ||
535 | if (*src != ')' && '(') | |
536 | { | |
537 | as_bad (_("expected @(exp, reg16)")); | |
538 | return; | |
539 | } | |
540 | *ptr = src + 1; | |
541 | ||
542 | return; | |
543 | } | |
544 | len = parse_reg (src, &mode, &num, direction); | |
545 | ||
546 | if (len) | |
547 | { | |
548 | src += len; | |
549 | if (*src == '+') | |
550 | { | |
551 | src++; | |
552 | if ((mode & SIZE) != PSIZE) | |
553 | as_bad (_("Wrong size pointer register for architecture.")); | |
554 | op->mode = RSINC; | |
555 | op->reg = num; | |
556 | *ptr = src; | |
557 | return; | |
558 | } | |
559 | if ((mode & SIZE) != PSIZE) | |
560 | as_bad (_("Wrong size pointer register for architecture.")); | |
561 | ||
562 | op->mode = direction | IND | PSIZE; | |
563 | op->reg = num; | |
564 | *ptr = src; | |
565 | ||
566 | return; | |
567 | } | |
568 | else | |
569 | { | |
570 | /* must be a symbol */ | |
571 | ||
572 | op->mode = ABS | direction; | |
573 | src = parse_exp (src, &op->exp); | |
574 | ||
575 | *ptr = colonmod24 (op, src); | |
576 | ||
577 | return; | |
578 | } | |
579 | } | |
580 | ||
581 | ||
582 | if (*src == '#') | |
583 | { | |
584 | src++; | |
585 | op->mode = IMM; | |
586 | src = parse_exp (src, &op->exp); | |
587 | *ptr = skip_colonthing (src, &op->exp, &op->mode); | |
588 | ||
589 | return; | |
590 | } | |
591 | else if (strncmp (src, "mach", 4) == 0 | |
592 | || strncmp (src, "macl", 4) == 0) | |
593 | { | |
594 | op->reg = src[3] == 'l'; | |
595 | op->mode = MACREG; | |
596 | *ptr = src + 4; | |
597 | return; | |
598 | } | |
599 | else | |
600 | { | |
601 | src = parse_exp (src, &op->exp); | |
602 | /* Trailing ':' size ? */ | |
603 | if (*src == ':') | |
604 | { | |
605 | if (src[1] == '1' && src[2] == '6') | |
606 | { | |
607 | op->mode = PCREL | L_16; | |
608 | src += 3; | |
609 | } | |
610 | else if (src[1] == '8') | |
611 | { | |
612 | op->mode = PCREL | L_8; | |
613 | src += 2; | |
614 | } | |
615 | else | |
616 | { | |
617 | as_bad (_("expect :8 or :16 here")); | |
618 | } | |
619 | } | |
620 | else | |
621 | { | |
622 | op->mode = PCREL | bsize; | |
623 | } | |
624 | *ptr = src; | |
625 | } | |
626 | } | |
627 | ||
628 | ||
629 | static | |
630 | char * | |
631 | get_operands (noperands, op_end, operand) | |
632 | unsigned int noperands; | |
633 | char *op_end; | |
634 | struct h8_op *operand; | |
635 | { | |
636 | char *ptr = op_end; | |
637 | ||
638 | switch (noperands) | |
639 | { | |
640 | case 0: | |
641 | operand[0].mode = 0; | |
642 | operand[1].mode = 0; | |
643 | break; | |
644 | ||
645 | case 1: | |
646 | ptr++; | |
647 | get_operand (&ptr, operand + 0, 0, SRC); | |
648 | if (*ptr == ',') | |
649 | { | |
650 | ptr++; | |
651 | get_operand (&ptr, operand + 1, 1, DST); | |
652 | } | |
653 | else | |
654 | { | |
655 | operand[1].mode = 0; | |
656 | } | |
657 | ||
658 | break; | |
659 | case 2: | |
660 | ptr++; | |
661 | get_operand (&ptr, operand + 0, 0, SRC); | |
662 | if (*ptr == ',') | |
663 | ptr++; | |
664 | get_operand (&ptr, operand + 1, 1, DST); | |
665 | break; | |
666 | ||
667 | default: | |
668 | abort (); | |
669 | } | |
670 | ||
671 | ||
672 | return ptr; | |
673 | } | |
674 | ||
675 | /* Passed a pointer to a list of opcodes which use different | |
676 | addressing modes, return the opcode which matches the opcodes | |
677 | provided | |
678 | */ | |
679 | static | |
680 | struct h8_opcode * | |
681 | get_specific (opcode, operands, size) | |
682 | struct h8_opcode *opcode; | |
683 | struct h8_op *operands; | |
684 | int size; | |
685 | { | |
686 | struct h8_opcode *this_try = opcode; | |
687 | int found = 0; | |
688 | ||
689 | unsigned int this_index = opcode->idx; | |
690 | ||
691 | /* There's only one ldm/stm and it's easier to just | |
692 | get out quick for them. */ | |
693 | if (strcmp (opcode->name, "stm.l") == 0 | |
694 | || strcmp (opcode->name, "ldm.l") == 0) | |
695 | return this_try; | |
696 | ||
697 | while (this_index == opcode->idx && !found) | |
698 | { | |
699 | found = 1; | |
700 | ||
701 | this_try = opcode++; | |
702 | if (this_try->noperands == 0) | |
703 | { | |
704 | int this_size; | |
705 | ||
706 | this_size = this_try->how & SN; | |
707 | if (this_size != size && (this_size != SB || size != SN)) | |
708 | found = 0; | |
709 | } | |
710 | else | |
711 | { | |
712 | unsigned int i; | |
713 | ||
714 | for (i = 0; i < this_try->noperands && found; i++) | |
715 | { | |
716 | op_type op = this_try->args.nib[i]; | |
717 | int x = operands[i].mode; | |
718 | ||
719 | if ((op & (DISP | REG)) == (DISP | REG) | |
720 | && ((x & (DISP | REG)) == (DISP | REG))) | |
721 | { | |
722 | dispreg = operands[i].reg; | |
723 | } | |
724 | else if (op & REG) | |
725 | { | |
726 | if (!(x & REG)) | |
727 | found = 0; | |
728 | ||
729 | if (x & L_P) | |
730 | x = (x & ~L_P) | (Hmode ? L_32 : L_16); | |
731 | if (op & L_P) | |
732 | op = (op & ~L_P) | (Hmode ? L_32 : L_16); | |
733 | ||
734 | opsize = op & SIZE; | |
735 | ||
736 | /* The size of the reg is v important */ | |
737 | if ((op & SIZE) != (x & SIZE)) | |
738 | found = 0; | |
739 | } | |
740 | else if ((op & ABSJMP) && (x & ABS)) | |
741 | { | |
742 | operands[i].mode &= ~ABS; | |
743 | operands[i].mode |= ABSJMP; | |
744 | /* But it may not be 24 bits long */ | |
745 | if (!Hmode) | |
746 | { | |
747 | operands[i].mode &= ~SIZE; | |
748 | operands[i].mode |= L_16; | |
749 | } | |
750 | } | |
751 | else if ((op & (KBIT | DBIT)) && (x & IMM)) | |
752 | { | |
753 | /* This is ok if the immediate value is sensible */ | |
754 | } | |
755 | else if (op & PCREL) | |
756 | { | |
757 | /* The size of the displacement is important */ | |
758 | if ((op & SIZE) != (x & SIZE)) | |
759 | found = 0; | |
760 | } | |
761 | else if ((op & (DISP | IMM | ABS)) | |
762 | && (op & (DISP | IMM | ABS)) == (x & (DISP | IMM | ABS))) | |
763 | { | |
764 | /* Promote a L_24 to L_32 if it makes us match. */ | |
765 | if ((x & L_24) && (op & L_32)) | |
766 | { | |
767 | x &= ~L_24; | |
768 | x |= L_32; | |
769 | } | |
770 | /* Promote an L8 to L_16 if it makes us match. */ | |
771 | if (op & ABS && op & L_8 && op & DISP) | |
772 | { | |
773 | if (x & L_16) | |
774 | found= 1; | |
775 | } | |
776 | else if ((x & SIZE) != 0 | |
777 | && ((op & SIZE) != (x & SIZE))) | |
778 | found = 0; | |
779 | } | |
780 | else if ((op & MACREG) != (x & MACREG)) | |
781 | { | |
782 | found = 0; | |
783 | } | |
784 | else if ((op & MODE) != (x & MODE)) | |
785 | { | |
786 | found = 0; | |
787 | } | |
788 | } | |
789 | } | |
790 | } | |
791 | if (found) | |
792 | return this_try; | |
793 | else | |
794 | return 0; | |
795 | } | |
796 | ||
797 | static void | |
798 | check_operand (operand, width, string) | |
799 | struct h8_op *operand; | |
800 | unsigned int width; | |
801 | char *string; | |
802 | { | |
803 | if (operand->exp.X_add_symbol == 0 | |
804 | && operand->exp.X_op_symbol == 0) | |
805 | { | |
806 | ||
807 | /* No symbol involved, let's look at offset, it's dangerous if any of | |
808 | the high bits are not 0 or ff's, find out by oring or anding with | |
809 | the width and seeing if the answer is 0 or all fs*/ | |
810 | ||
811 | if ((operand->exp.X_add_number & ~width) != 0 && | |
812 | (operand->exp.X_add_number | width) != (~0)) | |
813 | { | |
814 | if (width == 255 | |
815 | && (operand->exp.X_add_number & 0xff00) == 0xff00) | |
816 | { | |
817 | /* Just ignore this one - which happens when trying to | |
818 | fit a 16 bit address truncated into an 8 bit address | |
819 | of something like bset. */ | |
820 | } | |
821 | else | |
822 | { | |
823 | as_warn (_("operand %s0x%lx out of range."), string, | |
824 | (unsigned long) operand->exp.X_add_number); | |
825 | } | |
826 | } | |
827 | } | |
828 | ||
829 | } | |
830 | ||
831 | /* RELAXMODE has one of 3 values: | |
832 | ||
833 | 0 Output a "normal" reloc, no relaxing possible for this insn/reloc | |
834 | ||
835 | 1 Output a relaxable 24bit absolute mov.w address relocation | |
836 | (may relax into a 16bit absolute address). | |
837 | ||
838 | 2 Output a relaxable 16/24 absolute mov.b address relocation | |
839 | (may relax into an 8bit absolute address). */ | |
840 | ||
841 | static void | |
842 | do_a_fix_imm (offset, operand, relaxmode) | |
843 | int offset; | |
844 | struct h8_op *operand; | |
845 | int relaxmode; | |
846 | { | |
847 | int idx; | |
848 | int size; | |
849 | int where; | |
850 | ||
851 | ||
852 | char *t = operand->mode & IMM ? "#" : "@"; | |
853 | ||
854 | if (operand->exp.X_add_symbol == 0) | |
855 | { | |
856 | char *bytes = frag_now->fr_literal + offset; | |
857 | switch (operand->mode & SIZE) | |
858 | { | |
859 | case L_2: | |
860 | check_operand (operand, 0x3, t); | |
861 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
862 | break; | |
863 | case L_3: | |
864 | check_operand (operand, 0x7, t); | |
865 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
866 | break; | |
867 | case L_8: | |
868 | check_operand (operand, 0xff, t); | |
869 | bytes[0] = operand->exp.X_add_number; | |
870 | break; | |
871 | case L_16: | |
872 | check_operand (operand, 0xffff, t); | |
873 | bytes[0] = operand->exp.X_add_number >> 8; | |
874 | bytes[1] = operand->exp.X_add_number >> 0; | |
875 | break; | |
876 | case L_24: | |
877 | check_operand (operand, 0xffffff, t); | |
878 | bytes[0] = operand->exp.X_add_number >> 16; | |
879 | bytes[1] = operand->exp.X_add_number >> 8; | |
880 | bytes[2] = operand->exp.X_add_number >> 0; | |
881 | break; | |
882 | ||
883 | case L_32: | |
884 | /* This should be done with bfd */ | |
885 | bytes[0] = operand->exp.X_add_number >> 24; | |
886 | bytes[1] = operand->exp.X_add_number >> 16; | |
887 | bytes[2] = operand->exp.X_add_number >> 8; | |
888 | bytes[3] = operand->exp.X_add_number >> 0; | |
889 | break; | |
890 | } | |
891 | ||
892 | } | |
893 | else | |
894 | { | |
895 | switch (operand->mode & SIZE) | |
896 | { | |
897 | ||
898 | case L_24: | |
899 | case L_32: | |
900 | size = 4; | |
901 | where = (operand->mode & SIZE) == L_24 ? -1 : 0; | |
902 | if (relaxmode == 2) | |
903 | idx = R_MOV24B1; | |
904 | else if (relaxmode == 1) | |
905 | idx = R_MOVL1; | |
906 | else | |
907 | idx = R_RELLONG; | |
908 | break; | |
909 | default: | |
910 | as_bad(_("Can't work out size of operand.\n")); | |
911 | case L_16: | |
912 | size = 2; | |
913 | where = 0; | |
914 | if (relaxmode == 2) | |
915 | idx = R_MOV16B1; | |
916 | else | |
917 | idx = R_RELWORD; | |
918 | operand->exp.X_add_number = (short)operand->exp.X_add_number; | |
919 | break; | |
920 | case L_8: | |
921 | size = 1; | |
922 | where = 0; | |
923 | idx = R_RELBYTE; | |
924 | /* This used to use a cast to char, but that fails if char is an | |
925 | unsigned type. We can't use `signed char', as that isn't valid | |
926 | K&R C. */ | |
927 | if (operand->exp.X_add_number & 0x80) | |
928 | operand->exp.X_add_number |= ((offsetT) -1 << 8); | |
929 | else | |
930 | operand->exp.X_add_number &= 0xff; | |
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; | |
1117 | /* This used to use a cast to char, but that fails if char is an | |
1118 | unsigned type. We can't use `signed char', as that isn't valid | |
1119 | K&R C. */ | |
1120 | if (operand[i].exp.X_add_number & 0x80) | |
1121 | operand[i].exp.X_add_number |= ((offsetT) -1 << 8); | |
1122 | else | |
1123 | operand[i].exp.X_add_number &= 0xff; | |
1124 | ||
1125 | fix_new_exp (frag_now, | |
1126 | output - frag_now->fr_literal + where, | |
1127 | size, | |
1128 | &operand[i].exp, | |
1129 | 1, | |
1130 | type); | |
1131 | } | |
1132 | else if (x & MEMIND) | |
1133 | { | |
1134 | ||
1135 | check_operand (operand + i, 0xff, "@@"); | |
1136 | fix_new_exp (frag_now, | |
1137 | output - frag_now->fr_literal + 1, | |
1138 | 1, | |
1139 | &operand[i].exp, | |
1140 | 0, | |
1141 | R_MEM_INDIRECT); | |
1142 | } | |
1143 | else if (x & ABSJMP) | |
1144 | { | |
1145 | /* This jmp may be a jump or a branch */ | |
1146 | ||
1147 | check_operand (operand + i, Hmode ? 0xffffff : 0xffff, "@"); | |
1148 | if (operand[i].exp.X_add_number & 1) | |
1149 | { | |
1150 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1151 | (unsigned long) operand->exp.X_add_number); | |
1152 | } | |
1153 | if (!Hmode) | |
1154 | operand[i].exp.X_add_number = (short) operand[i].exp.X_add_number; | |
1155 | fix_new_exp (frag_now, | |
1156 | output - frag_now->fr_literal, | |
1157 | 4, | |
1158 | &operand[i].exp, | |
1159 | 0, | |
1160 | R_JMPL1); | |
1161 | } | |
1162 | } | |
1163 | ||
1164 | } | |
1165 | ||
1166 | /* | |
1167 | try and give an intelligent error message for common and simple to | |
1168 | detect errors | |
1169 | */ | |
1170 | ||
1171 | static void | |
1172 | clever_message (opcode, operand) | |
1173 | struct h8_opcode *opcode; | |
1174 | struct h8_op *operand; | |
1175 | { | |
1176 | /* Find out if there was more than one possible opccode */ | |
1177 | ||
1178 | if ((opcode + 1)->idx != opcode->idx) | |
1179 | { | |
1180 | unsigned int argn; | |
1181 | ||
1182 | /* Only one opcode of this flavour, try and guess which operand | |
1183 | didn't match */ | |
1184 | for (argn = 0; argn < opcode->noperands; argn++) | |
1185 | { | |
1186 | switch (opcode->args.nib[argn]) | |
1187 | { | |
1188 | case RD16: | |
1189 | if (operand[argn].mode != RD16) | |
1190 | { | |
1191 | as_bad (_("destination operand must be 16 bit register")); | |
1192 | return; | |
1193 | ||
1194 | } | |
1195 | break; | |
1196 | ||
1197 | case RS8: | |
1198 | ||
1199 | if (operand[argn].mode != RS8) | |
1200 | { | |
1201 | as_bad (_("source operand must be 8 bit register")); | |
1202 | return; | |
1203 | } | |
1204 | break; | |
1205 | ||
1206 | case ABS16DST: | |
1207 | if (operand[argn].mode != ABS16DST) | |
1208 | { | |
1209 | as_bad (_("destination operand must be 16bit absolute address")); | |
1210 | return; | |
1211 | } | |
1212 | break; | |
1213 | case RD8: | |
1214 | if (operand[argn].mode != RD8) | |
1215 | { | |
1216 | as_bad (_("destination operand must be 8 bit register")); | |
1217 | return; | |
1218 | } | |
1219 | break; | |
1220 | ||
1221 | ||
1222 | case ABS16SRC: | |
1223 | if (operand[argn].mode != ABS16SRC) | |
1224 | { | |
1225 | as_bad (_("source operand must be 16bit absolute address")); | |
1226 | return; | |
1227 | } | |
1228 | break; | |
1229 | ||
1230 | } | |
1231 | } | |
1232 | } | |
1233 | as_bad (_("invalid operands")); | |
1234 | } | |
1235 | ||
1236 | /* This is the guts of the machine-dependent assembler. STR points to a | |
1237 | machine dependent instruction. This funciton is supposed to emit | |
1238 | the frags/bytes it assembles to. | |
1239 | */ | |
1240 | ||
1241 | ||
1242 | ||
1243 | void | |
1244 | md_assemble (str) | |
1245 | char *str; | |
1246 | { | |
1247 | char *op_start; | |
1248 | char *op_end; | |
1249 | struct h8_op operand[2]; | |
1250 | struct h8_opcode *opcode; | |
1251 | struct h8_opcode *prev_opcode; | |
1252 | ||
1253 | char *dot = 0; | |
1254 | char c; | |
1255 | int size; | |
1256 | ||
1257 | /* Drop leading whitespace */ | |
1258 | while (*str == ' ') | |
1259 | str++; | |
1260 | ||
1261 | /* find the op code end */ | |
1262 | for (op_start = op_end = str; | |
1263 | *op_end != 0 && *op_end != ' '; | |
1264 | op_end++) | |
1265 | { | |
1266 | if (*op_end == '.') | |
1267 | { | |
1268 | dot = op_end + 1; | |
1269 | *op_end = 0; | |
1270 | op_end += 2; | |
1271 | break; | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | ; | |
1276 | ||
1277 | if (op_end == op_start) | |
1278 | { | |
1279 | as_bad (_("can't find opcode ")); | |
1280 | } | |
1281 | c = *op_end; | |
1282 | ||
1283 | *op_end = 0; | |
1284 | ||
1285 | opcode = (struct h8_opcode *) hash_find (opcode_hash_control, | |
1286 | op_start); | |
1287 | ||
1288 | if (opcode == NULL) | |
1289 | { | |
1290 | as_bad (_("unknown opcode")); | |
1291 | return; | |
1292 | } | |
1293 | ||
1294 | /* We use to set input_line_pointer to the result of get_operands, | |
1295 | but that is wrong. Our caller assumes we don't change it. */ | |
1296 | ||
1297 | (void) get_operands (opcode->noperands, op_end, operand); | |
1298 | *op_end = c; | |
1299 | prev_opcode = opcode; | |
1300 | ||
1301 | size = SN; | |
1302 | if (dot) | |
1303 | { | |
1304 | switch (*dot) | |
1305 | { | |
1306 | case 'b': | |
1307 | size = SB; | |
1308 | break; | |
1309 | ||
1310 | case 'w': | |
1311 | size = SW; | |
1312 | break; | |
1313 | ||
1314 | case 'l': | |
1315 | size = SL; | |
1316 | break; | |
1317 | } | |
1318 | } | |
1319 | opcode = get_specific (opcode, operand, size); | |
1320 | ||
1321 | if (opcode == 0) | |
1322 | { | |
1323 | /* Couldn't find an opcode which matched the operands */ | |
1324 | char *where = frag_more (2); | |
1325 | ||
1326 | where[0] = 0x0; | |
1327 | where[1] = 0x0; | |
1328 | clever_message (prev_opcode, operand); | |
1329 | ||
1330 | return; | |
1331 | } | |
1332 | if (opcode->size && dot) | |
1333 | { | |
1334 | if (opcode->size != *dot) | |
1335 | { | |
1336 | as_warn (_("mismatch between opcode size and operand size")); | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | build_bytes (opcode, operand); | |
1341 | ||
1342 | } | |
1343 | ||
1344 | void | |
1345 | tc_crawl_symbol_chain (headers) | |
1346 | object_headers * headers; | |
1347 | { | |
1348 | printf (_("call to tc_crawl_symbol_chain \n")); | |
1349 | } | |
1350 | ||
1351 | symbolS * | |
1352 | md_undefined_symbol (name) | |
1353 | char *name; | |
1354 | { | |
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | void | |
1359 | tc_headers_hook (headers) | |
1360 | object_headers * headers; | |
1361 | { | |
1362 | printf (_("call to tc_headers_hook \n")); | |
1363 | } | |
1364 | ||
1365 | /* Various routines to kill one day */ | |
1366 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1367 | #define MAX_LITTLENUMS 6 | |
1368 | ||
1369 | /* Turn a string in input_line_pointer into a floating point constant of type | |
1370 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1371 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. | |
1372 | */ | |
1373 | char * | |
1374 | md_atof (type, litP, sizeP) | |
1375 | char type; | |
1376 | char *litP; | |
1377 | int *sizeP; | |
1378 | { | |
1379 | int prec; | |
1380 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1381 | LITTLENUM_TYPE *wordP; | |
1382 | char *t; | |
1383 | char *atof_ieee (); | |
1384 | ||
1385 | switch (type) | |
1386 | { | |
1387 | case 'f': | |
1388 | case 'F': | |
1389 | case 's': | |
1390 | case 'S': | |
1391 | prec = 2; | |
1392 | break; | |
1393 | ||
1394 | case 'd': | |
1395 | case 'D': | |
1396 | case 'r': | |
1397 | case 'R': | |
1398 | prec = 4; | |
1399 | break; | |
1400 | ||
1401 | case 'x': | |
1402 | case 'X': | |
1403 | prec = 6; | |
1404 | break; | |
1405 | ||
1406 | case 'p': | |
1407 | case 'P': | |
1408 | prec = 6; | |
1409 | break; | |
1410 | ||
1411 | default: | |
1412 | *sizeP = 0; | |
1413 | return _("Bad call to MD_ATOF()"); | |
1414 | } | |
1415 | t = atof_ieee (input_line_pointer, type, words); | |
1416 | if (t) | |
1417 | input_line_pointer = t; | |
1418 | ||
1419 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1420 | for (wordP = words; prec--;) | |
1421 | { | |
1422 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1423 | litP += sizeof (LITTLENUM_TYPE); | |
1424 | } | |
1425 | return 0; | |
1426 | } | |
1427 | \f | |
1428 | CONST char *md_shortopts = ""; | |
1429 | struct option md_longopts[] = { | |
1430 | {NULL, no_argument, NULL, 0} | |
1431 | }; | |
1432 | size_t md_longopts_size = sizeof(md_longopts); | |
1433 | ||
1434 | int | |
1435 | md_parse_option (c, arg) | |
1436 | int c; | |
1437 | char *arg; | |
1438 | { | |
1439 | return 0; | |
1440 | } | |
1441 | ||
1442 | void | |
1443 | md_show_usage (stream) | |
1444 | FILE *stream; | |
1445 | { | |
1446 | } | |
1447 | \f | |
1448 | void | |
1449 | tc_aout_fix_to_chars () | |
1450 | { | |
1451 | printf (_("call to tc_aout_fix_to_chars \n")); | |
1452 | abort (); | |
1453 | } | |
1454 | ||
1455 | void | |
1456 | md_convert_frag (headers, seg, fragP) | |
1457 | object_headers *headers; | |
1458 | segT seg; | |
1459 | fragS *fragP; | |
1460 | { | |
1461 | printf (_("call to md_convert_frag \n")); | |
1462 | abort (); | |
1463 | } | |
1464 | ||
1465 | valueT | |
1466 | md_section_align (seg, size) | |
1467 | segT seg; | |
1468 | valueT size; | |
1469 | { | |
1470 | return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg])); | |
1471 | ||
1472 | } | |
1473 | ||
1474 | void | |
1475 | md_apply_fix (fixP, val) | |
1476 | fixS *fixP; | |
1477 | long val; | |
1478 | { | |
1479 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1480 | ||
1481 | switch (fixP->fx_size) | |
1482 | { | |
1483 | case 1: | |
1484 | *buf++ = val; | |
1485 | break; | |
1486 | case 2: | |
1487 | *buf++ = (val >> 8); | |
1488 | *buf++ = val; | |
1489 | break; | |
1490 | case 4: | |
1491 | *buf++ = (val >> 24); | |
1492 | *buf++ = (val >> 16); | |
1493 | *buf++ = (val >> 8); | |
1494 | *buf++ = val; | |
1495 | break; | |
1496 | default: | |
1497 | abort (); | |
1498 | } | |
1499 | } | |
1500 | ||
1501 | int | |
1502 | md_estimate_size_before_relax (fragP, segment_type) | |
1503 | register fragS *fragP; | |
1504 | register segT segment_type; | |
1505 | { | |
1506 | printf (_("call tomd_estimate_size_before_relax \n")); | |
1507 | abort (); | |
1508 | } | |
1509 | ||
1510 | /* Put number into target byte order */ | |
1511 | ||
1512 | void | |
1513 | md_number_to_chars (ptr, use, nbytes) | |
1514 | char *ptr; | |
1515 | valueT use; | |
1516 | int nbytes; | |
1517 | { | |
1518 | number_to_chars_bigendian (ptr, use, nbytes); | |
1519 | } | |
1520 | long | |
1521 | md_pcrel_from (fixP) | |
1522 | fixS *fixP; | |
1523 | { | |
1524 | abort (); | |
1525 | } | |
1526 | ||
1527 | ||
1528 | void | |
1529 | tc_reloc_mangle (fix_ptr, intr, base) | |
1530 | fixS *fix_ptr; | |
1531 | struct internal_reloc *intr; | |
1532 | bfd_vma base; | |
1533 | ||
1534 | { | |
1535 | symbolS *symbol_ptr; | |
1536 | ||
1537 | symbol_ptr = fix_ptr->fx_addsy; | |
1538 | ||
1539 | /* If this relocation is attached to a symbol then it's ok | |
1540 | to output it */ | |
1541 | if (fix_ptr->fx_r_type == TC_CONS_RELOC) | |
1542 | { | |
1543 | /* cons likes to create reloc32's whatever the size of the reloc.. | |
1544 | */ | |
1545 | switch (fix_ptr->fx_size) | |
1546 | { | |
1547 | case 4: | |
1548 | intr->r_type = R_RELLONG; | |
1549 | break; | |
1550 | case 2: | |
1551 | intr->r_type = R_RELWORD; | |
1552 | break; | |
1553 | case 1: | |
1554 | intr->r_type = R_RELBYTE; | |
1555 | break; | |
1556 | default: | |
1557 | abort (); | |
1558 | ||
1559 | } | |
1560 | ||
1561 | } | |
1562 | else | |
1563 | { | |
1564 | intr->r_type = fix_ptr->fx_r_type; | |
1565 | } | |
1566 | ||
1567 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; | |
1568 | intr->r_offset = fix_ptr->fx_offset; | |
1569 | ||
1570 | if (symbol_ptr) | |
1571 | { | |
1572 | if (symbol_ptr->sy_number != -1) | |
1573 | intr->r_symndx = symbol_ptr->sy_number; | |
1574 | else | |
1575 | { | |
1576 | symbolS *segsym; | |
1577 | ||
1578 | /* This case arises when a reference is made to `.'. */ | |
1579 | segsym = seg_info (S_GET_SEGMENT (symbol_ptr))->dot; | |
1580 | if (segsym == NULL) | |
1581 | intr->r_symndx = -1; | |
1582 | else | |
1583 | { | |
1584 | intr->r_symndx = segsym->sy_number; | |
1585 | intr->r_offset += S_GET_VALUE (symbol_ptr); | |
1586 | } | |
1587 | } | |
1588 | } | |
1589 | else | |
1590 | intr->r_symndx = -1; | |
1591 | ||
1592 | ||
1593 | } | |
1594 | ||
1595 | /* end of tc-h8300.c */ |