Commit | Line | Data |
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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 | ||
252b5132 RH |
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 | ||
63a0b638 | 36 | const char comment_chars[] = ";"; |
252b5132 | 37 | const char line_comment_chars[] = "#"; |
63a0b638 | 38 | const char line_separator_chars[] = ""; |
252b5132 RH |
39 | |
40 | /* This table describes all the machine specific pseudo-ops the assembler | |
41 | has to support. The fields are: | |
42 | pseudo-op name without dot | |
43 | function to call to execute this pseudo-op | |
44 | Integer arg to pass to the function | |
45 | */ | |
46 | ||
47 | void cons (); | |
48 | ||
49 | int Hmode; | |
50 | int Smode; | |
51 | #define PSIZE (Hmode ? L_32 : L_16) | |
52 | #define DMODE (L_16) | |
53 | #define DSYMMODE (Hmode ? L_24 : L_16) | |
54 | int bsize = L_8; /* default branch displacement */ | |
55 | ||
252b5132 RH |
56 | void |
57 | h8300hmode () | |
58 | { | |
59 | Hmode = 1; | |
60 | Smode = 0; | |
61 | } | |
62 | ||
63 | void | |
64 | h8300smode () | |
65 | { | |
66 | Smode = 1; | |
67 | Hmode = 1; | |
68 | } | |
70d6ecf3 | 69 | |
252b5132 RH |
70 | void |
71 | sbranch (size) | |
72 | int size; | |
73 | { | |
74 | bsize = size; | |
75 | } | |
76 | ||
70d6ecf3 AM |
77 | static void |
78 | pint () | |
252b5132 RH |
79 | { |
80 | cons (Hmode ? 4 : 2); | |
81 | } | |
82 | ||
83 | const pseudo_typeS md_pseudo_table[] = | |
84 | { | |
252b5132 RH |
85 | {"h8300h", h8300hmode, 0}, |
86 | {"h8300s", h8300smode, 0}, | |
87 | {"sbranch", sbranch, L_8}, | |
88 | {"lbranch", sbranch, L_16}, | |
89 | ||
90 | {"int", pint, 0}, | |
91 | {"data.b", cons, 1}, | |
92 | {"data.w", cons, 2}, | |
93 | {"data.l", cons, 4}, | |
94 | {"form", listing_psize, 0}, | |
95 | {"heading", listing_title, 0}, | |
96 | {"import", s_ignore, 0}, | |
97 | {"page", listing_eject, 0}, | |
98 | {"program", s_ignore, 0}, | |
99 | {0, 0, 0} | |
100 | }; | |
101 | ||
102 | const int md_reloc_size; | |
103 | ||
104 | const char EXP_CHARS[] = "eE"; | |
105 | ||
106 | /* Chars that mean this number is a floating point constant */ | |
107 | /* As in 0f12.456 */ | |
108 | /* or 0d1.2345e12 */ | |
109 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
110 | ||
111 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ | |
112 | ||
70d6ecf3 AM |
113 | /* This function is called once, at assembler startup time. This |
114 | should set up all the tables, etc. that the MD part of the assembler | |
115 | needs. */ | |
252b5132 RH |
116 | void |
117 | md_begin () | |
118 | { | |
119 | struct h8_opcode *opcode; | |
120 | char prev_buffer[100]; | |
121 | int idx = 0; | |
122 | ||
123 | opcode_hash_control = hash_new (); | |
124 | prev_buffer[0] = 0; | |
125 | ||
126 | for (opcode = h8_opcodes; opcode->name; opcode++) | |
127 | { | |
128 | /* Strip off any . part when inserting the opcode and only enter | |
70d6ecf3 | 129 | unique codes into the hash table. */ |
252b5132 RH |
130 | char *src = opcode->name; |
131 | unsigned int len = strlen (src); | |
132 | char *dst = malloc (len + 1); | |
133 | char *buffer = dst; | |
134 | ||
135 | opcode->size = 0; | |
136 | while (*src) | |
137 | { | |
138 | if (*src == '.') | |
139 | { | |
140 | src++; | |
141 | opcode->size = *src; | |
142 | break; | |
143 | } | |
144 | *dst++ = *src++; | |
145 | } | |
146 | *dst++ = 0; | |
147 | if (strcmp (buffer, prev_buffer)) | |
148 | { | |
149 | hash_insert (opcode_hash_control, buffer, (char *) opcode); | |
150 | strcpy (prev_buffer, buffer); | |
151 | idx++; | |
152 | } | |
153 | opcode->idx = idx; | |
154 | ||
70d6ecf3 | 155 | /* Find the number of operands. */ |
252b5132 RH |
156 | opcode->noperands = 0; |
157 | while (opcode->args.nib[opcode->noperands] != E) | |
158 | opcode->noperands++; | |
70d6ecf3 AM |
159 | |
160 | /* Find the length of the opcode in bytes. */ | |
252b5132 RH |
161 | opcode->length = 0; |
162 | while (opcode->data.nib[opcode->length * 2] != E) | |
163 | opcode->length++; | |
164 | } | |
165 | ||
166 | linkrelax = 1; | |
167 | } | |
168 | ||
252b5132 RH |
169 | struct h8_exp |
170 | { | |
171 | char *e_beg; | |
172 | char *e_end; | |
173 | expressionS e_exp; | |
174 | }; | |
70d6ecf3 | 175 | |
252b5132 RH |
176 | int dispreg; |
177 | int opsize; /* Set when a register size is seen */ | |
178 | ||
252b5132 RH |
179 | struct h8_op |
180 | { | |
181 | op_type mode; | |
182 | unsigned reg; | |
183 | expressionS exp; | |
184 | }; | |
185 | ||
186 | /* | |
187 | parse operands | |
188 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp | |
189 | r0l,r0h,..r7l,r7h | |
190 | @WREG | |
191 | @WREG+ | |
192 | @-WREG | |
193 | #const | |
194 | ccr | |
195 | */ | |
196 | ||
40f09f82 JL |
197 | /* Try and parse a reg name, returns number of chars consumed. */ |
198 | static int | |
252b5132 RH |
199 | parse_reg (src, mode, reg, direction) |
200 | char *src; | |
201 | op_type *mode; | |
202 | unsigned int *reg; | |
203 | int direction; | |
204 | ||
205 | { | |
206 | char *end; | |
207 | int len; | |
208 | ||
70d6ecf3 | 209 | /* Cribbed from get_symbol_end. */ |
252b5132 RH |
210 | if (!is_name_beginner (*src) || *src == '\001') |
211 | return 0; | |
70d6ecf3 | 212 | end = src + 1; |
252b5132 RH |
213 | while (is_part_of_name (*end) || *end == '\001') |
214 | end++; | |
215 | len = end - src; | |
216 | ||
217 | if (len == 2 && src[0] == 's' && src[1] == 'p') | |
218 | { | |
219 | *mode = PSIZE | REG | direction; | |
220 | *reg = 7; | |
221 | return len; | |
222 | } | |
223 | if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r') | |
224 | { | |
225 | *mode = CCR; | |
226 | *reg = 0; | |
227 | return len; | |
228 | } | |
229 | if (len == 3 && src[0] == 'e' && src[1] == 'x' && src[2] == 'r') | |
230 | { | |
231 | *mode = EXR; | |
232 | *reg = 0; | |
233 | return len; | |
234 | } | |
235 | if (len == 2 && src[0] == 'f' && src[1] == 'p') | |
236 | { | |
237 | *mode = PSIZE | REG | direction; | |
238 | *reg = 6; | |
239 | return len; | |
240 | } | |
241 | if (len == 3 && src[0] == 'e' && src[1] == 'r' | |
242 | && src[2] >= '0' && src[2] <= '7') | |
243 | { | |
244 | *mode = L_32 | REG | direction; | |
245 | *reg = src[2] - '0'; | |
246 | if (!Hmode) | |
247 | as_warn (_("Reg not valid for H8/300")); | |
248 | return len; | |
249 | } | |
250 | if (len == 2 && src[0] == 'e' && src[1] >= '0' && src[1] <= '7') | |
251 | { | |
252 | *mode = L_16 | REG | direction; | |
253 | *reg = src[1] - '0' + 8; | |
254 | if (!Hmode) | |
255 | as_warn (_("Reg not valid for H8/300")); | |
256 | return len; | |
257 | } | |
258 | ||
259 | if (src[0] == 'r') | |
260 | { | |
261 | if (src[1] >= '0' && src[1] <= '7') | |
262 | { | |
263 | if (len == 3 && src[2] == 'l') | |
264 | { | |
265 | *mode = L_8 | REG | direction; | |
266 | *reg = (src[1] - '0') + 8; | |
267 | return len; | |
268 | } | |
269 | if (len == 3 && src[2] == 'h') | |
270 | { | |
271 | *mode = L_8 | REG | direction; | |
272 | *reg = (src[1] - '0'); | |
273 | return len; | |
274 | } | |
275 | if (len == 2) | |
276 | { | |
277 | *mode = L_16 | REG | direction; | |
278 | *reg = (src[1] - '0'); | |
279 | return len; | |
280 | } | |
281 | } | |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
40f09f82 | 287 | static char * |
252b5132 RH |
288 | parse_exp (s, op) |
289 | char *s; | |
70d6ecf3 | 290 | expressionS *op; |
252b5132 RH |
291 | { |
292 | char *save = input_line_pointer; | |
293 | char *new; | |
294 | ||
295 | input_line_pointer = s; | |
296 | expression (op); | |
297 | if (op->X_op == O_absent) | |
298 | as_bad (_("missing operand")); | |
299 | new = input_line_pointer; | |
300 | input_line_pointer = save; | |
301 | return new; | |
302 | } | |
303 | ||
304 | static char * | |
305 | skip_colonthing (ptr, exp, mode) | |
306 | char *ptr; | |
dbbc7809 | 307 | expressionS *exp ATTRIBUTE_UNUSED; |
252b5132 RH |
308 | int *mode; |
309 | { | |
310 | if (*ptr == ':') | |
311 | { | |
312 | ptr++; | |
313 | *mode &= ~SIZE; | |
314 | if (*ptr == '8') | |
315 | { | |
316 | ptr++; | |
317 | /* ff fill any 8 bit quantity */ | |
70d6ecf3 | 318 | /* exp->X_add_number -= 0x100; */ |
252b5132 RH |
319 | *mode |= L_8; |
320 | } | |
321 | else | |
322 | { | |
323 | if (*ptr == '2') | |
324 | { | |
325 | *mode |= L_24; | |
326 | } | |
327 | else if (*ptr == '3') | |
328 | { | |
329 | *mode |= L_32; | |
330 | } | |
331 | else if (*ptr == '1') | |
332 | { | |
333 | *mode |= L_16; | |
334 | } | |
335 | while (isdigit (*ptr)) | |
336 | ptr++; | |
337 | } | |
338 | } | |
339 | return ptr; | |
340 | } | |
341 | ||
342 | /* The many forms of operand: | |
343 | ||
344 | Rn Register direct | |
345 | @Rn Register indirect | |
346 | @(exp[:16], Rn) Register indirect with displacement | |
347 | @Rn+ | |
348 | @-Rn | |
70d6ecf3 AM |
349 | @aa:8 absolute 8 bit |
350 | @aa:16 absolute 16 bit | |
252b5132 RH |
351 | @aa absolute 16 bit |
352 | ||
353 | #xx[:size] immediate data | |
70d6ecf3 | 354 | @(exp:[8], pc) pc rel |
252b5132 RH |
355 | @@aa[:8] memory indirect |
356 | ||
357 | */ | |
358 | ||
359 | char * | |
360 | colonmod24 (op, src) | |
361 | struct h8_op *op; | |
362 | char *src; | |
363 | ||
364 | { | |
365 | int mode = 0; | |
366 | src = skip_colonthing (src, &op->exp, &mode); | |
367 | ||
368 | if (!mode) | |
369 | { | |
70d6ecf3 | 370 | /* Choose a default mode. */ |
252b5132 RH |
371 | if (op->exp.X_add_number < -32768 |
372 | || op->exp.X_add_number > 32767) | |
373 | { | |
374 | if (Hmode) | |
375 | mode = L_24; | |
376 | else | |
377 | mode = L_16; | |
378 | } | |
379 | else if (op->exp.X_add_symbol | |
380 | || op->exp.X_op_symbol) | |
381 | mode = DSYMMODE; | |
382 | else | |
383 | mode = DMODE; | |
384 | } | |
385 | op->mode |= mode; | |
386 | return src; | |
387 | ||
388 | } | |
389 | ||
252b5132 RH |
390 | static void |
391 | get_operand (ptr, op, dst, direction) | |
392 | char **ptr; | |
393 | struct h8_op *op; | |
dbbc7809 | 394 | unsigned int dst ATTRIBUTE_UNUSED; |
252b5132 RH |
395 | int direction; |
396 | { | |
397 | char *src = *ptr; | |
398 | op_type mode; | |
399 | unsigned int num; | |
400 | unsigned int len; | |
401 | ||
402 | op->mode = E; | |
403 | ||
404 | /* Gross. Gross. ldm and stm have a format not easily handled | |
405 | by get_operand. We deal with it explicitly here. */ | |
70d6ecf3 AM |
406 | if (src[0] == 'e' && src[1] == 'r' && isdigit (src[2]) |
407 | && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && isdigit (src[6])) | |
252b5132 RH |
408 | { |
409 | int low, high; | |
410 | ||
411 | low = src[2] - '0'; | |
412 | high = src[6] - '0'; | |
413 | ||
414 | if (high < low) | |
415 | as_bad (_("Invalid register list for ldm/stm\n")); | |
416 | ||
417 | if (low % 2) | |
418 | as_bad (_("Invalid register list for ldm/stm\n")); | |
419 | ||
420 | if (high - low > 3) | |
421 | as_bad (_("Invalid register list for ldm/stm\n")); | |
422 | ||
423 | if (high - low != 1 | |
424 | && low % 4) | |
425 | as_bad (_("Invalid register list for ldm/stm\n")); | |
426 | ||
427 | /* Even sicker. We encode two registers into op->reg. One | |
428 | for the low register to save, the other for the high | |
429 | register to save; we also set the high bit in op->reg | |
430 | so we know this is "very special". */ | |
431 | op->reg = 0x80000000 | (high << 8) | low; | |
432 | op->mode = REG; | |
433 | *ptr = src + 7; | |
434 | return; | |
435 | } | |
436 | ||
437 | len = parse_reg (src, &op->mode, &op->reg, direction); | |
438 | if (len) | |
439 | { | |
440 | *ptr = src + len; | |
441 | return; | |
442 | } | |
443 | ||
444 | if (*src == '@') | |
445 | { | |
446 | src++; | |
447 | if (*src == '@') | |
448 | { | |
449 | src++; | |
450 | src = parse_exp (src, &op->exp); | |
451 | ||
452 | src = skip_colonthing (src, &op->exp, &op->mode); | |
453 | ||
454 | *ptr = src; | |
455 | ||
456 | op->mode = MEMIND; | |
457 | return; | |
252b5132 RH |
458 | } |
459 | ||
252b5132 RH |
460 | if (*src == '-') |
461 | { | |
462 | src++; | |
463 | len = parse_reg (src, &mode, &num, direction); | |
464 | if (len == 0) | |
465 | { | |
70d6ecf3 | 466 | /* Oops, not a reg after all, must be ordinary exp. */ |
252b5132 | 467 | src--; |
70d6ecf3 | 468 | /* Must be a symbol. */ |
252b5132 RH |
469 | op->mode = ABS | PSIZE | direction; |
470 | *ptr = skip_colonthing (parse_exp (src, &op->exp), | |
471 | &op->exp, &op->mode); | |
472 | ||
473 | return; | |
252b5132 RH |
474 | } |
475 | ||
252b5132 RH |
476 | if ((mode & SIZE) != PSIZE) |
477 | as_bad (_("Wrong size pointer register for architecture.")); | |
478 | op->mode = RDDEC; | |
479 | op->reg = num; | |
480 | *ptr = src + len; | |
481 | return; | |
482 | } | |
483 | if (*src == '(') | |
484 | { | |
70d6ecf3 | 485 | /* Disp. */ |
252b5132 RH |
486 | src++; |
487 | ||
70d6ecf3 | 488 | /* Start off assuming a 16 bit offset. */ |
252b5132 RH |
489 | |
490 | src = parse_exp (src, &op->exp); | |
491 | ||
492 | src = colonmod24 (op, src); | |
493 | ||
494 | if (*src == ')') | |
495 | { | |
496 | src++; | |
497 | op->mode |= ABS | direction; | |
498 | *ptr = src; | |
499 | return; | |
500 | } | |
501 | ||
502 | if (*src != ',') | |
503 | { | |
504 | as_bad (_("expected @(exp, reg16)")); | |
505 | return; | |
506 | ||
507 | } | |
508 | src++; | |
509 | ||
510 | len = parse_reg (src, &mode, &op->reg, direction); | |
511 | if (len == 0 || !(mode & REG)) | |
512 | { | |
513 | as_bad (_("expected @(exp, reg16)")); | |
514 | return; | |
515 | } | |
516 | op->mode |= DISP | direction; | |
517 | dispreg = op->reg; | |
518 | src += len; | |
519 | src = skip_colonthing (src, &op->exp, &op->mode); | |
520 | ||
521 | if (*src != ')' && '(') | |
522 | { | |
523 | as_bad (_("expected @(exp, reg16)")); | |
524 | return; | |
525 | } | |
526 | *ptr = src + 1; | |
527 | ||
528 | return; | |
529 | } | |
530 | len = parse_reg (src, &mode, &num, direction); | |
531 | ||
532 | if (len) | |
533 | { | |
534 | src += len; | |
535 | if (*src == '+') | |
536 | { | |
537 | src++; | |
538 | if ((mode & SIZE) != PSIZE) | |
539 | as_bad (_("Wrong size pointer register for architecture.")); | |
540 | op->mode = RSINC; | |
541 | op->reg = num; | |
542 | *ptr = src; | |
543 | return; | |
544 | } | |
545 | if ((mode & SIZE) != PSIZE) | |
546 | as_bad (_("Wrong size pointer register for architecture.")); | |
547 | ||
548 | op->mode = direction | IND | PSIZE; | |
549 | op->reg = num; | |
550 | *ptr = src; | |
551 | ||
552 | return; | |
553 | } | |
554 | else | |
555 | { | |
556 | /* must be a symbol */ | |
557 | ||
558 | op->mode = ABS | direction; | |
559 | src = parse_exp (src, &op->exp); | |
560 | ||
561 | *ptr = colonmod24 (op, src); | |
562 | ||
563 | return; | |
564 | } | |
565 | } | |
566 | ||
252b5132 RH |
567 | if (*src == '#') |
568 | { | |
569 | src++; | |
570 | op->mode = IMM; | |
571 | src = parse_exp (src, &op->exp); | |
572 | *ptr = skip_colonthing (src, &op->exp, &op->mode); | |
573 | ||
574 | return; | |
575 | } | |
576 | else if (strncmp (src, "mach", 4) == 0 | |
577 | || strncmp (src, "macl", 4) == 0) | |
578 | { | |
579 | op->reg = src[3] == 'l'; | |
580 | op->mode = MACREG; | |
581 | *ptr = src + 4; | |
582 | return; | |
583 | } | |
584 | else | |
585 | { | |
586 | src = parse_exp (src, &op->exp); | |
587 | /* Trailing ':' size ? */ | |
588 | if (*src == ':') | |
589 | { | |
590 | if (src[1] == '1' && src[2] == '6') | |
591 | { | |
592 | op->mode = PCREL | L_16; | |
593 | src += 3; | |
594 | } | |
595 | else if (src[1] == '8') | |
596 | { | |
597 | op->mode = PCREL | L_8; | |
598 | src += 2; | |
599 | } | |
600 | else | |
601 | { | |
602 | as_bad (_("expect :8 or :16 here")); | |
603 | } | |
604 | } | |
605 | else | |
606 | { | |
607 | op->mode = PCREL | bsize; | |
608 | } | |
609 | *ptr = src; | |
610 | } | |
611 | } | |
612 | ||
70d6ecf3 | 613 | static char * |
252b5132 RH |
614 | get_operands (noperands, op_end, operand) |
615 | unsigned int noperands; | |
616 | char *op_end; | |
617 | struct h8_op *operand; | |
618 | { | |
619 | char *ptr = op_end; | |
620 | ||
621 | switch (noperands) | |
622 | { | |
623 | case 0: | |
624 | operand[0].mode = 0; | |
625 | operand[1].mode = 0; | |
626 | break; | |
627 | ||
628 | case 1: | |
629 | ptr++; | |
630 | get_operand (&ptr, operand + 0, 0, SRC); | |
631 | if (*ptr == ',') | |
632 | { | |
633 | ptr++; | |
634 | get_operand (&ptr, operand + 1, 1, DST); | |
635 | } | |
636 | else | |
637 | { | |
638 | operand[1].mode = 0; | |
639 | } | |
252b5132 | 640 | break; |
70d6ecf3 | 641 | |
252b5132 RH |
642 | case 2: |
643 | ptr++; | |
644 | get_operand (&ptr, operand + 0, 0, SRC); | |
645 | if (*ptr == ',') | |
646 | ptr++; | |
647 | get_operand (&ptr, operand + 1, 1, DST); | |
648 | break; | |
649 | ||
650 | default: | |
651 | abort (); | |
652 | } | |
653 | ||
252b5132 RH |
654 | return ptr; |
655 | } | |
656 | ||
657 | /* Passed a pointer to a list of opcodes which use different | |
658 | addressing modes, return the opcode which matches the opcodes | |
70d6ecf3 AM |
659 | provided. */ |
660 | static struct h8_opcode * | |
252b5132 RH |
661 | get_specific (opcode, operands, size) |
662 | struct h8_opcode *opcode; | |
663 | struct h8_op *operands; | |
664 | int size; | |
665 | { | |
666 | struct h8_opcode *this_try = opcode; | |
667 | int found = 0; | |
668 | ||
669 | unsigned int this_index = opcode->idx; | |
670 | ||
671 | /* There's only one ldm/stm and it's easier to just | |
672 | get out quick for them. */ | |
673 | if (strcmp (opcode->name, "stm.l") == 0 | |
674 | || strcmp (opcode->name, "ldm.l") == 0) | |
675 | return this_try; | |
676 | ||
677 | while (this_index == opcode->idx && !found) | |
678 | { | |
679 | found = 1; | |
680 | ||
681 | this_try = opcode++; | |
682 | if (this_try->noperands == 0) | |
683 | { | |
684 | int this_size; | |
685 | ||
686 | this_size = this_try->how & SN; | |
687 | if (this_size != size && (this_size != SB || size != SN)) | |
688 | found = 0; | |
689 | } | |
690 | else | |
691 | { | |
692 | unsigned int i; | |
693 | ||
694 | for (i = 0; i < this_try->noperands && found; i++) | |
695 | { | |
696 | op_type op = this_try->args.nib[i]; | |
697 | int x = operands[i].mode; | |
698 | ||
699 | if ((op & (DISP | REG)) == (DISP | REG) | |
700 | && ((x & (DISP | REG)) == (DISP | REG))) | |
701 | { | |
702 | dispreg = operands[i].reg; | |
703 | } | |
704 | else if (op & REG) | |
705 | { | |
706 | if (!(x & REG)) | |
707 | found = 0; | |
708 | ||
709 | if (x & L_P) | |
710 | x = (x & ~L_P) | (Hmode ? L_32 : L_16); | |
711 | if (op & L_P) | |
712 | op = (op & ~L_P) | (Hmode ? L_32 : L_16); | |
713 | ||
714 | opsize = op & SIZE; | |
715 | ||
70d6ecf3 | 716 | /* The size of the reg is v important. */ |
252b5132 RH |
717 | if ((op & SIZE) != (x & SIZE)) |
718 | found = 0; | |
719 | } | |
720 | else if ((op & ABSJMP) && (x & ABS)) | |
721 | { | |
722 | operands[i].mode &= ~ABS; | |
723 | operands[i].mode |= ABSJMP; | |
70d6ecf3 | 724 | /* But it may not be 24 bits long. */ |
252b5132 RH |
725 | if (!Hmode) |
726 | { | |
727 | operands[i].mode &= ~SIZE; | |
728 | operands[i].mode |= L_16; | |
729 | } | |
730 | } | |
731 | else if ((op & (KBIT | DBIT)) && (x & IMM)) | |
732 | { | |
70d6ecf3 | 733 | /* This is ok if the immediate value is sensible. */ |
252b5132 RH |
734 | } |
735 | else if (op & PCREL) | |
736 | { | |
70d6ecf3 | 737 | /* The size of the displacement is important. */ |
252b5132 RH |
738 | if ((op & SIZE) != (x & SIZE)) |
739 | found = 0; | |
740 | } | |
741 | else if ((op & (DISP | IMM | ABS)) | |
742 | && (op & (DISP | IMM | ABS)) == (x & (DISP | IMM | ABS))) | |
743 | { | |
744 | /* Promote a L_24 to L_32 if it makes us match. */ | |
745 | if ((x & L_24) && (op & L_32)) | |
746 | { | |
747 | x &= ~L_24; | |
748 | x |= L_32; | |
749 | } | |
750 | /* Promote an L8 to L_16 if it makes us match. */ | |
70d6ecf3 | 751 | if (op & ABS && op & L_8 && op & DISP) |
252b5132 RH |
752 | { |
753 | if (x & L_16) | |
70d6ecf3 | 754 | found = 1; |
252b5132 RH |
755 | } |
756 | else if ((x & SIZE) != 0 | |
757 | && ((op & SIZE) != (x & SIZE))) | |
758 | found = 0; | |
759 | } | |
760 | else if ((op & MACREG) != (x & MACREG)) | |
761 | { | |
762 | found = 0; | |
763 | } | |
764 | else if ((op & MODE) != (x & MODE)) | |
765 | { | |
766 | found = 0; | |
70d6ecf3 | 767 | } |
252b5132 RH |
768 | } |
769 | } | |
770 | } | |
771 | if (found) | |
772 | return this_try; | |
773 | else | |
774 | return 0; | |
775 | } | |
776 | ||
777 | static void | |
778 | check_operand (operand, width, string) | |
779 | struct h8_op *operand; | |
780 | unsigned int width; | |
781 | char *string; | |
782 | { | |
783 | if (operand->exp.X_add_symbol == 0 | |
784 | && operand->exp.X_op_symbol == 0) | |
785 | { | |
70d6ecf3 AM |
786 | /* No symbol involved, let's look at offset, it's dangerous if |
787 | any of the high bits are not 0 or ff's, find out by oring or | |
788 | anding with the width and seeing if the answer is 0 or all | |
789 | fs. */ | |
252b5132 | 790 | |
252b5132 RH |
791 | if ((operand->exp.X_add_number & ~width) != 0 && |
792 | (operand->exp.X_add_number | width) != (~0)) | |
793 | { | |
70d6ecf3 | 794 | if (width == 255 |
252b5132 RH |
795 | && (operand->exp.X_add_number & 0xff00) == 0xff00) |
796 | { | |
797 | /* Just ignore this one - which happens when trying to | |
798 | fit a 16 bit address truncated into an 8 bit address | |
799 | of something like bset. */ | |
800 | } | |
70d6ecf3 | 801 | else |
252b5132 RH |
802 | { |
803 | as_warn (_("operand %s0x%lx out of range."), string, | |
804 | (unsigned long) operand->exp.X_add_number); | |
805 | } | |
806 | } | |
807 | } | |
252b5132 RH |
808 | } |
809 | ||
810 | /* RELAXMODE has one of 3 values: | |
811 | ||
812 | 0 Output a "normal" reloc, no relaxing possible for this insn/reloc | |
813 | ||
814 | 1 Output a relaxable 24bit absolute mov.w address relocation | |
815 | (may relax into a 16bit absolute address). | |
816 | ||
817 | 2 Output a relaxable 16/24 absolute mov.b address relocation | |
818 | (may relax into an 8bit absolute address). */ | |
819 | ||
820 | static void | |
821 | do_a_fix_imm (offset, operand, relaxmode) | |
822 | int offset; | |
823 | struct h8_op *operand; | |
824 | int relaxmode; | |
825 | { | |
826 | int idx; | |
827 | int size; | |
828 | int where; | |
829 | ||
252b5132 RH |
830 | char *t = operand->mode & IMM ? "#" : "@"; |
831 | ||
832 | if (operand->exp.X_add_symbol == 0) | |
833 | { | |
834 | char *bytes = frag_now->fr_literal + offset; | |
835 | switch (operand->mode & SIZE) | |
836 | { | |
837 | case L_2: | |
838 | check_operand (operand, 0x3, t); | |
839 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
840 | break; | |
841 | case L_3: | |
842 | check_operand (operand, 0x7, t); | |
843 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
844 | break; | |
845 | case L_8: | |
846 | check_operand (operand, 0xff, t); | |
847 | bytes[0] = operand->exp.X_add_number; | |
848 | break; | |
849 | case L_16: | |
850 | check_operand (operand, 0xffff, t); | |
851 | bytes[0] = operand->exp.X_add_number >> 8; | |
852 | bytes[1] = operand->exp.X_add_number >> 0; | |
853 | break; | |
854 | case L_24: | |
855 | check_operand (operand, 0xffffff, t); | |
856 | bytes[0] = operand->exp.X_add_number >> 16; | |
857 | bytes[1] = operand->exp.X_add_number >> 8; | |
858 | bytes[2] = operand->exp.X_add_number >> 0; | |
859 | break; | |
860 | ||
861 | case L_32: | |
70d6ecf3 | 862 | /* This should be done with bfd. */ |
252b5132 RH |
863 | bytes[0] = operand->exp.X_add_number >> 24; |
864 | bytes[1] = operand->exp.X_add_number >> 16; | |
865 | bytes[2] = operand->exp.X_add_number >> 8; | |
866 | bytes[3] = operand->exp.X_add_number >> 0; | |
4132022d AM |
867 | if (relaxmode != 0) |
868 | { | |
869 | idx = (relaxmode == 2) ? R_MOV24B1 : R_MOVL1; | |
870 | fix_new_exp (frag_now, offset, 4, &operand->exp, 0, idx); | |
871 | } | |
252b5132 RH |
872 | break; |
873 | } | |
252b5132 RH |
874 | } |
875 | else | |
876 | { | |
877 | switch (operand->mode & SIZE) | |
878 | { | |
252b5132 RH |
879 | case L_24: |
880 | case L_32: | |
881 | size = 4; | |
882 | where = (operand->mode & SIZE) == L_24 ? -1 : 0; | |
883 | if (relaxmode == 2) | |
884 | idx = R_MOV24B1; | |
885 | else if (relaxmode == 1) | |
886 | idx = R_MOVL1; | |
887 | else | |
888 | idx = R_RELLONG; | |
889 | break; | |
890 | default: | |
70d6ecf3 | 891 | as_bad (_("Can't work out size of operand.\n")); |
252b5132 RH |
892 | case L_16: |
893 | size = 2; | |
894 | where = 0; | |
895 | if (relaxmode == 2) | |
896 | idx = R_MOV16B1; | |
897 | else | |
898 | idx = R_RELWORD; | |
4132022d AM |
899 | operand->exp.X_add_number = |
900 | ((operand->exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; | |
252b5132 RH |
901 | break; |
902 | case L_8: | |
903 | size = 1; | |
904 | where = 0; | |
905 | idx = R_RELBYTE; | |
4132022d AM |
906 | operand->exp.X_add_number = |
907 | ((operand->exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 RH |
908 | } |
909 | ||
910 | fix_new_exp (frag_now, | |
911 | offset + where, | |
912 | size, | |
913 | &operand->exp, | |
914 | 0, | |
915 | idx); | |
916 | } | |
252b5132 RH |
917 | } |
918 | ||
70d6ecf3 | 919 | /* Now we know what sort of opcodes it is, let's build the bytes. */ |
252b5132 RH |
920 | static void |
921 | build_bytes (this_try, operand) | |
922 | struct h8_opcode *this_try; | |
923 | struct h8_op *operand; | |
924 | { | |
925 | unsigned int i; | |
926 | ||
927 | char *output = frag_more (this_try->length); | |
928 | op_type *nibble_ptr = this_try->data.nib; | |
929 | op_type c; | |
930 | unsigned int nibble_count = 0; | |
931 | int absat; | |
932 | int immat; | |
933 | int nib; | |
934 | int movb = 0; | |
935 | char asnibbles[30]; | |
936 | char *p = asnibbles; | |
937 | ||
938 | if (!(this_try->inbase || Hmode)) | |
939 | as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"), | |
940 | this_try->name); | |
941 | ||
942 | while (*nibble_ptr != E) | |
943 | { | |
944 | int d; | |
945 | c = *nibble_ptr++; | |
946 | ||
947 | d = (c & (DST | SRC_IN_DST)) != 0; | |
948 | ||
949 | if (c < 16) | |
950 | { | |
951 | nib = c; | |
952 | } | |
953 | else | |
954 | { | |
252b5132 RH |
955 | if (c & (REG | IND | INC | DEC)) |
956 | { | |
957 | nib = operand[d].reg; | |
958 | } | |
959 | else if ((c & DISPREG) == (DISPREG)) | |
960 | { | |
961 | nib = dispreg; | |
962 | } | |
70d6ecf3 | 963 | else if (c & ABS) |
252b5132 RH |
964 | { |
965 | operand[d].mode = c; | |
966 | absat = nibble_count / 2; | |
967 | nib = 0; | |
968 | } | |
969 | else if (c & (IMM | PCREL | ABS | ABSJMP | DISP)) | |
970 | { | |
971 | operand[d].mode = c; | |
972 | immat = nibble_count / 2; | |
973 | nib = 0; | |
974 | } | |
975 | else if (c & IGNORE) | |
976 | { | |
977 | nib = 0; | |
978 | } | |
979 | else if (c & DBIT) | |
980 | { | |
981 | switch (operand[0].exp.X_add_number) | |
982 | { | |
983 | case 1: | |
984 | nib = c; | |
985 | break; | |
986 | case 2: | |
987 | nib = 0x8 | c; | |
988 | break; | |
989 | default: | |
990 | as_bad (_("Need #1 or #2 here")); | |
991 | } | |
992 | } | |
993 | else if (c & KBIT) | |
994 | { | |
995 | switch (operand[0].exp.X_add_number) | |
996 | { | |
997 | case 1: | |
998 | nib = 0; | |
999 | break; | |
1000 | case 2: | |
1001 | nib = 8; | |
1002 | break; | |
1003 | case 4: | |
1004 | if (!Hmode) | |
1005 | as_warn (_("#4 not valid on H8/300.")); | |
1006 | nib = 9; | |
1007 | break; | |
1008 | ||
1009 | default: | |
1010 | as_bad (_("Need #1 or #2 here")); | |
1011 | break; | |
1012 | } | |
70d6ecf3 | 1013 | /* Stop it making a fix. */ |
252b5132 RH |
1014 | operand[0].mode = 0; |
1015 | } | |
1016 | ||
1017 | if (c & MEMRELAX) | |
1018 | { | |
1019 | operand[d].mode |= MEMRELAX; | |
1020 | } | |
1021 | ||
1022 | if (c & B31) | |
1023 | { | |
1024 | nib |= 0x8; | |
1025 | } | |
1026 | ||
1027 | if (c & MACREG) | |
1028 | { | |
f0c56b90 NC |
1029 | if (operand[0].mode == MACREG) |
1030 | /* stmac has mac[hl] as the first operand. */ | |
1031 | nib = 2 + operand[0].reg; | |
1032 | else | |
1033 | /* ldmac has mac[hl] as the second operand. */ | |
1034 | nib = 2 + operand[1].reg; | |
252b5132 RH |
1035 | } |
1036 | } | |
1037 | nibble_count++; | |
1038 | ||
1039 | *p++ = nib; | |
1040 | } | |
1041 | ||
1042 | /* Disgusting. Why, oh why didn't someone ask us for advice | |
1043 | on the assembler format. */ | |
1044 | if (strcmp (this_try->name, "stm.l") == 0 | |
1045 | || strcmp (this_try->name, "ldm.l") == 0) | |
1046 | { | |
1047 | int high, low; | |
1048 | high = (operand[this_try->name[0] == 'l' ? 1 : 0].reg >> 8) & 0xf; | |
1049 | low = operand[this_try->name[0] == 'l' ? 1 : 0].reg & 0xf; | |
1050 | ||
1051 | asnibbles[2] = high - low; | |
1052 | asnibbles[7] = (this_try->name[0] == 'l') ? high : low; | |
1053 | } | |
1054 | ||
1055 | for (i = 0; i < this_try->length; i++) | |
1056 | { | |
1057 | output[i] = (asnibbles[i * 2] << 4) | asnibbles[i * 2 + 1]; | |
1058 | } | |
1059 | ||
1060 | /* Note if this is a movb instruction -- there's a special relaxation | |
1061 | which only applies to them. */ | |
1062 | if (strcmp (this_try->name, "mov.b") == 0) | |
1063 | movb = 1; | |
1064 | ||
70d6ecf3 | 1065 | /* Output any fixes. */ |
252b5132 RH |
1066 | for (i = 0; i < 2; i++) |
1067 | { | |
1068 | int x = operand[i].mode; | |
1069 | ||
1070 | if (x & (IMM | DISP)) | |
1071 | { | |
1072 | do_a_fix_imm (output - frag_now->fr_literal + immat, | |
1073 | operand + i, x & MEMRELAX != 0); | |
1074 | } | |
1075 | else if (x & ABS) | |
1076 | { | |
1077 | do_a_fix_imm (output - frag_now->fr_literal + absat, | |
1078 | operand + i, x & MEMRELAX ? movb + 1 : 0); | |
1079 | } | |
1080 | else if (x & PCREL) | |
1081 | { | |
1082 | int size16 = x & L_16; | |
1083 | int where = size16 ? 2 : 1; | |
1084 | int size = size16 ? 2 : 1; | |
1085 | int type = size16 ? R_PCRWORD : R_PCRBYTE; | |
1086 | ||
1087 | check_operand (operand + i, size16 ? 0x7fff : 0x7f, "@"); | |
1088 | ||
1089 | if (operand[i].exp.X_add_number & 1) | |
1090 | { | |
1091 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1092 | (unsigned long) operand->exp.X_add_number); | |
1093 | } | |
1094 | ||
1095 | operand[i].exp.X_add_number -= 1; | |
4132022d AM |
1096 | operand[i].exp.X_add_number = |
1097 | ((operand[i].exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 RH |
1098 | |
1099 | fix_new_exp (frag_now, | |
1100 | output - frag_now->fr_literal + where, | |
1101 | size, | |
1102 | &operand[i].exp, | |
1103 | 1, | |
1104 | type); | |
1105 | } | |
1106 | else if (x & MEMIND) | |
1107 | { | |
252b5132 RH |
1108 | check_operand (operand + i, 0xff, "@@"); |
1109 | fix_new_exp (frag_now, | |
1110 | output - frag_now->fr_literal + 1, | |
1111 | 1, | |
1112 | &operand[i].exp, | |
1113 | 0, | |
1114 | R_MEM_INDIRECT); | |
1115 | } | |
1116 | else if (x & ABSJMP) | |
1117 | { | |
70d6ecf3 | 1118 | /* This jmp may be a jump or a branch. */ |
252b5132 RH |
1119 | |
1120 | check_operand (operand + i, Hmode ? 0xffffff : 0xffff, "@"); | |
1121 | if (operand[i].exp.X_add_number & 1) | |
1122 | { | |
1123 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1124 | (unsigned long) operand->exp.X_add_number); | |
1125 | } | |
1126 | if (!Hmode) | |
70d6ecf3 | 1127 | operand[i].exp.X_add_number = |
4132022d | 1128 | ((operand[i].exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; |
252b5132 RH |
1129 | fix_new_exp (frag_now, |
1130 | output - frag_now->fr_literal, | |
1131 | 4, | |
1132 | &operand[i].exp, | |
1133 | 0, | |
1134 | R_JMPL1); | |
1135 | } | |
1136 | } | |
252b5132 RH |
1137 | } |
1138 | ||
70d6ecf3 AM |
1139 | /* Try to give an intelligent error message for common and simple to |
1140 | detect errors. */ | |
252b5132 RH |
1141 | static void |
1142 | clever_message (opcode, operand) | |
1143 | struct h8_opcode *opcode; | |
1144 | struct h8_op *operand; | |
1145 | { | |
70d6ecf3 | 1146 | /* Find out if there was more than one possible opcode. */ |
252b5132 RH |
1147 | |
1148 | if ((opcode + 1)->idx != opcode->idx) | |
1149 | { | |
1150 | unsigned int argn; | |
1151 | ||
70d6ecf3 AM |
1152 | /* Only one opcode of this flavour, try to guess which operand |
1153 | didn't match. */ | |
252b5132 RH |
1154 | for (argn = 0; argn < opcode->noperands; argn++) |
1155 | { | |
1156 | switch (opcode->args.nib[argn]) | |
1157 | { | |
1158 | case RD16: | |
1159 | if (operand[argn].mode != RD16) | |
1160 | { | |
1161 | as_bad (_("destination operand must be 16 bit register")); | |
1162 | return; | |
1163 | ||
1164 | } | |
1165 | break; | |
1166 | ||
1167 | case RS8: | |
252b5132 RH |
1168 | if (operand[argn].mode != RS8) |
1169 | { | |
1170 | as_bad (_("source operand must be 8 bit register")); | |
1171 | return; | |
1172 | } | |
1173 | break; | |
1174 | ||
1175 | case ABS16DST: | |
1176 | if (operand[argn].mode != ABS16DST) | |
1177 | { | |
1178 | as_bad (_("destination operand must be 16bit absolute address")); | |
1179 | return; | |
1180 | } | |
1181 | break; | |
1182 | case RD8: | |
1183 | if (operand[argn].mode != RD8) | |
1184 | { | |
1185 | as_bad (_("destination operand must be 8 bit register")); | |
1186 | return; | |
1187 | } | |
1188 | break; | |
1189 | ||
252b5132 RH |
1190 | case ABS16SRC: |
1191 | if (operand[argn].mode != ABS16SRC) | |
1192 | { | |
1193 | as_bad (_("source operand must be 16bit absolute address")); | |
1194 | return; | |
1195 | } | |
1196 | break; | |
1197 | ||
1198 | } | |
1199 | } | |
1200 | } | |
1201 | as_bad (_("invalid operands")); | |
1202 | } | |
1203 | ||
70d6ecf3 AM |
1204 | /* This is the guts of the machine-dependent assembler. STR points to |
1205 | a machine dependent instruction. This function is supposed to emit | |
1206 | the frags/bytes it assembles. */ | |
252b5132 RH |
1207 | void |
1208 | md_assemble (str) | |
1209 | char *str; | |
1210 | { | |
1211 | char *op_start; | |
1212 | char *op_end; | |
1213 | struct h8_op operand[2]; | |
1214 | struct h8_opcode *opcode; | |
1215 | struct h8_opcode *prev_opcode; | |
1216 | ||
1217 | char *dot = 0; | |
1218 | char c; | |
1219 | int size; | |
1220 | ||
70d6ecf3 | 1221 | /* Drop leading whitespace. */ |
252b5132 RH |
1222 | while (*str == ' ') |
1223 | str++; | |
1224 | ||
70d6ecf3 | 1225 | /* Find the op code end. */ |
252b5132 RH |
1226 | for (op_start = op_end = str; |
1227 | *op_end != 0 && *op_end != ' '; | |
1228 | op_end++) | |
1229 | { | |
1230 | if (*op_end == '.') | |
1231 | { | |
1232 | dot = op_end + 1; | |
1233 | *op_end = 0; | |
1234 | op_end += 2; | |
1235 | break; | |
1236 | } | |
1237 | } | |
1238 | ||
252b5132 RH |
1239 | if (op_end == op_start) |
1240 | { | |
1241 | as_bad (_("can't find opcode ")); | |
1242 | } | |
1243 | c = *op_end; | |
1244 | ||
1245 | *op_end = 0; | |
1246 | ||
1247 | opcode = (struct h8_opcode *) hash_find (opcode_hash_control, | |
1248 | op_start); | |
1249 | ||
1250 | if (opcode == NULL) | |
1251 | { | |
1252 | as_bad (_("unknown opcode")); | |
1253 | return; | |
1254 | } | |
1255 | ||
70d6ecf3 | 1256 | /* We used to set input_line_pointer to the result of get_operands, |
252b5132 RH |
1257 | but that is wrong. Our caller assumes we don't change it. */ |
1258 | ||
1259 | (void) get_operands (opcode->noperands, op_end, operand); | |
1260 | *op_end = c; | |
1261 | prev_opcode = opcode; | |
1262 | ||
1263 | size = SN; | |
1264 | if (dot) | |
1265 | { | |
1266 | switch (*dot) | |
1267 | { | |
1268 | case 'b': | |
1269 | size = SB; | |
1270 | break; | |
1271 | ||
1272 | case 'w': | |
1273 | size = SW; | |
1274 | break; | |
1275 | ||
1276 | case 'l': | |
1277 | size = SL; | |
1278 | break; | |
1279 | } | |
1280 | } | |
1281 | opcode = get_specific (opcode, operand, size); | |
1282 | ||
1283 | if (opcode == 0) | |
1284 | { | |
70d6ecf3 | 1285 | /* Couldn't find an opcode which matched the operands. */ |
252b5132 RH |
1286 | char *where = frag_more (2); |
1287 | ||
1288 | where[0] = 0x0; | |
1289 | where[1] = 0x0; | |
1290 | clever_message (prev_opcode, operand); | |
1291 | ||
1292 | return; | |
1293 | } | |
1294 | if (opcode->size && dot) | |
1295 | { | |
1296 | if (opcode->size != *dot) | |
1297 | { | |
1298 | as_warn (_("mismatch between opcode size and operand size")); | |
1299 | } | |
1300 | } | |
1301 | ||
1302 | build_bytes (opcode, operand); | |
252b5132 RH |
1303 | } |
1304 | ||
1305 | void | |
1306 | tc_crawl_symbol_chain (headers) | |
70d6ecf3 | 1307 | object_headers *headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1308 | { |
1309 | printf (_("call to tc_crawl_symbol_chain \n")); | |
1310 | } | |
1311 | ||
1312 | symbolS * | |
1313 | md_undefined_symbol (name) | |
dbbc7809 | 1314 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
1315 | { |
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | void | |
1320 | tc_headers_hook (headers) | |
70d6ecf3 | 1321 | object_headers *headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1322 | { |
1323 | printf (_("call to tc_headers_hook \n")); | |
1324 | } | |
1325 | ||
1326 | /* Various routines to kill one day */ | |
1327 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1328 | #define MAX_LITTLENUMS 6 | |
1329 | ||
70d6ecf3 AM |
1330 | /* Turn a string in input_line_pointer into a floating point constant |
1331 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
1332 | of LITTLENUMS emitted is stored in *SIZEP . An error message is | |
1333 | returned, or NULL on OK. */ | |
252b5132 RH |
1334 | char * |
1335 | md_atof (type, litP, sizeP) | |
1336 | char type; | |
1337 | char *litP; | |
1338 | int *sizeP; | |
1339 | { | |
1340 | int prec; | |
1341 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1342 | LITTLENUM_TYPE *wordP; | |
1343 | char *t; | |
1344 | char *atof_ieee (); | |
1345 | ||
1346 | switch (type) | |
1347 | { | |
1348 | case 'f': | |
1349 | case 'F': | |
1350 | case 's': | |
1351 | case 'S': | |
1352 | prec = 2; | |
1353 | break; | |
1354 | ||
1355 | case 'd': | |
1356 | case 'D': | |
1357 | case 'r': | |
1358 | case 'R': | |
1359 | prec = 4; | |
1360 | break; | |
1361 | ||
1362 | case 'x': | |
1363 | case 'X': | |
1364 | prec = 6; | |
1365 | break; | |
1366 | ||
1367 | case 'p': | |
1368 | case 'P': | |
1369 | prec = 6; | |
1370 | break; | |
1371 | ||
1372 | default: | |
1373 | *sizeP = 0; | |
1374 | return _("Bad call to MD_ATOF()"); | |
1375 | } | |
1376 | t = atof_ieee (input_line_pointer, type, words); | |
1377 | if (t) | |
1378 | input_line_pointer = t; | |
1379 | ||
1380 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1381 | for (wordP = words; prec--;) | |
1382 | { | |
1383 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1384 | litP += sizeof (LITTLENUM_TYPE); | |
1385 | } | |
1386 | return 0; | |
1387 | } | |
1388 | \f | |
1389 | CONST char *md_shortopts = ""; | |
1390 | struct option md_longopts[] = { | |
1391 | {NULL, no_argument, NULL, 0} | |
1392 | }; | |
70d6ecf3 AM |
1393 | |
1394 | size_t md_longopts_size = sizeof (md_longopts); | |
252b5132 RH |
1395 | |
1396 | int | |
1397 | md_parse_option (c, arg) | |
dbbc7809 JL |
1398 | int c ATTRIBUTE_UNUSED; |
1399 | char *arg ATTRIBUTE_UNUSED; | |
252b5132 RH |
1400 | { |
1401 | return 0; | |
1402 | } | |
1403 | ||
1404 | void | |
1405 | md_show_usage (stream) | |
dbbc7809 | 1406 | FILE *stream ATTRIBUTE_UNUSED; |
252b5132 RH |
1407 | { |
1408 | } | |
1409 | \f | |
1410 | void | |
1411 | tc_aout_fix_to_chars () | |
1412 | { | |
1413 | printf (_("call to tc_aout_fix_to_chars \n")); | |
1414 | abort (); | |
1415 | } | |
1416 | ||
1417 | void | |
1418 | md_convert_frag (headers, seg, fragP) | |
dbbc7809 JL |
1419 | object_headers *headers ATTRIBUTE_UNUSED; |
1420 | segT seg ATTRIBUTE_UNUSED; | |
1421 | fragS *fragP ATTRIBUTE_UNUSED; | |
252b5132 RH |
1422 | { |
1423 | printf (_("call to md_convert_frag \n")); | |
1424 | abort (); | |
1425 | } | |
1426 | ||
70d6ecf3 | 1427 | valueT |
252b5132 RH |
1428 | md_section_align (seg, size) |
1429 | segT seg; | |
1430 | valueT size; | |
1431 | { | |
70d6ecf3 AM |
1432 | return ((size + (1 << section_alignment[(int) seg]) - 1) |
1433 | & (-1 << section_alignment[(int) seg])); | |
252b5132 RH |
1434 | } |
1435 | ||
1436 | void | |
1437 | md_apply_fix (fixP, val) | |
1438 | fixS *fixP; | |
1439 | long val; | |
1440 | { | |
1441 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1442 | ||
1443 | switch (fixP->fx_size) | |
1444 | { | |
1445 | case 1: | |
1446 | *buf++ = val; | |
1447 | break; | |
1448 | case 2: | |
1449 | *buf++ = (val >> 8); | |
1450 | *buf++ = val; | |
1451 | break; | |
1452 | case 4: | |
1453 | *buf++ = (val >> 24); | |
1454 | *buf++ = (val >> 16); | |
1455 | *buf++ = (val >> 8); | |
1456 | *buf++ = val; | |
1457 | break; | |
1458 | default: | |
1459 | abort (); | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | int | |
1464 | md_estimate_size_before_relax (fragP, segment_type) | |
dbbc7809 JL |
1465 | register fragS *fragP ATTRIBUTE_UNUSED; |
1466 | register segT segment_type ATTRIBUTE_UNUSED; | |
252b5132 RH |
1467 | { |
1468 | printf (_("call tomd_estimate_size_before_relax \n")); | |
1469 | abort (); | |
1470 | } | |
1471 | ||
70d6ecf3 | 1472 | /* Put number into target byte order. */ |
252b5132 RH |
1473 | void |
1474 | md_number_to_chars (ptr, use, nbytes) | |
1475 | char *ptr; | |
1476 | valueT use; | |
1477 | int nbytes; | |
1478 | { | |
1479 | number_to_chars_bigendian (ptr, use, nbytes); | |
1480 | } | |
70d6ecf3 | 1481 | |
252b5132 RH |
1482 | long |
1483 | md_pcrel_from (fixP) | |
dbbc7809 | 1484 | fixS *fixP ATTRIBUTE_UNUSED; |
252b5132 RH |
1485 | { |
1486 | abort (); | |
1487 | } | |
1488 | ||
252b5132 RH |
1489 | void |
1490 | tc_reloc_mangle (fix_ptr, intr, base) | |
1491 | fixS *fix_ptr; | |
1492 | struct internal_reloc *intr; | |
1493 | bfd_vma base; | |
1494 | ||
1495 | { | |
1496 | symbolS *symbol_ptr; | |
1497 | ||
1498 | symbol_ptr = fix_ptr->fx_addsy; | |
1499 | ||
1500 | /* If this relocation is attached to a symbol then it's ok | |
70d6ecf3 | 1501 | to output it. */ |
252b5132 RH |
1502 | if (fix_ptr->fx_r_type == TC_CONS_RELOC) |
1503 | { | |
1504 | /* cons likes to create reloc32's whatever the size of the reloc.. | |
1505 | */ | |
1506 | switch (fix_ptr->fx_size) | |
1507 | { | |
1508 | case 4: | |
1509 | intr->r_type = R_RELLONG; | |
1510 | break; | |
1511 | case 2: | |
1512 | intr->r_type = R_RELWORD; | |
1513 | break; | |
1514 | case 1: | |
1515 | intr->r_type = R_RELBYTE; | |
1516 | break; | |
1517 | default: | |
1518 | abort (); | |
252b5132 | 1519 | } |
252b5132 RH |
1520 | } |
1521 | else | |
1522 | { | |
1523 | intr->r_type = fix_ptr->fx_r_type; | |
1524 | } | |
1525 | ||
1526 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; | |
1527 | intr->r_offset = fix_ptr->fx_offset; | |
1528 | ||
1529 | if (symbol_ptr) | |
1530 | { | |
1531 | if (symbol_ptr->sy_number != -1) | |
1532 | intr->r_symndx = symbol_ptr->sy_number; | |
1533 | else | |
1534 | { | |
1535 | symbolS *segsym; | |
1536 | ||
1537 | /* This case arises when a reference is made to `.'. */ | |
1538 | segsym = seg_info (S_GET_SEGMENT (symbol_ptr))->dot; | |
1539 | if (segsym == NULL) | |
1540 | intr->r_symndx = -1; | |
1541 | else | |
1542 | { | |
1543 | intr->r_symndx = segsym->sy_number; | |
1544 | intr->r_offset += S_GET_VALUE (symbol_ptr); | |
1545 | } | |
1546 | } | |
1547 | } | |
1548 | else | |
1549 | intr->r_symndx = -1; | |
252b5132 | 1550 | } |