Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-h8300.c -- Assemble code for the Hitachi H8/300 |
7e0de7bf | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001 |
f7e42eb4 | 3 | Free Software Foundation, Inc. |
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 | ||
bc0d738a | 22 | /* Written By Steve Chamberlain <sac@cygnus.com>. */ |
252b5132 RH |
23 | |
24 | #include <stdio.h> | |
25 | #include "as.h" | |
26 | #include "subsegs.h" | |
27 | #include "bfd.h" | |
28 | #define DEFINE_TABLE | |
29 | #define h8_opcodes ops | |
30 | #include "opcode/h8300.h" | |
3882b010 | 31 | #include "safe-ctype.h" |
252b5132 | 32 | |
7e0de7bf JL |
33 | #ifdef OBJ_ELF |
34 | #include "elf/h8.h" | |
7e0de7bf JL |
35 | #endif |
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 | ||
252b5132 RH |
57 | void |
58 | h8300hmode () | |
59 | { | |
60 | Hmode = 1; | |
61 | Smode = 0; | |
83e20b45 JL |
62 | #ifdef BFD_ASSEMBLER |
63 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300h)) | |
64 | as_warn (_("could not set architecture and machine")); | |
65 | #endif | |
252b5132 RH |
66 | } |
67 | ||
68 | void | |
69 | h8300smode () | |
70 | { | |
71 | Smode = 1; | |
72 | Hmode = 1; | |
83e20b45 JL |
73 | #ifdef BFD_ASSEMBLER |
74 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300s)) | |
75 | as_warn (_("could not set architecture and machine")); | |
76 | #endif | |
252b5132 | 77 | } |
70d6ecf3 | 78 | |
252b5132 RH |
79 | void |
80 | sbranch (size) | |
81 | int size; | |
82 | { | |
83 | bsize = size; | |
84 | } | |
85 | ||
70d6ecf3 AM |
86 | static void |
87 | pint () | |
252b5132 RH |
88 | { |
89 | cons (Hmode ? 4 : 2); | |
90 | } | |
91 | ||
92 | const pseudo_typeS md_pseudo_table[] = | |
93 | { | |
252b5132 RH |
94 | {"h8300h", h8300hmode, 0}, |
95 | {"h8300s", h8300smode, 0}, | |
96 | {"sbranch", sbranch, L_8}, | |
97 | {"lbranch", sbranch, L_16}, | |
98 | ||
99 | {"int", pint, 0}, | |
100 | {"data.b", cons, 1}, | |
101 | {"data.w", cons, 2}, | |
102 | {"data.l", cons, 4}, | |
103 | {"form", listing_psize, 0}, | |
104 | {"heading", listing_title, 0}, | |
105 | {"import", s_ignore, 0}, | |
106 | {"page", listing_eject, 0}, | |
107 | {"program", s_ignore, 0}, | |
108 | {0, 0, 0} | |
109 | }; | |
110 | ||
111 | const int md_reloc_size; | |
112 | ||
113 | const char EXP_CHARS[] = "eE"; | |
114 | ||
115 | /* Chars that mean this number is a floating point constant */ | |
116 | /* As in 0f12.456 */ | |
117 | /* or 0d1.2345e12 */ | |
118 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
119 | ||
120 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ | |
121 | ||
70d6ecf3 AM |
122 | /* This function is called once, at assembler startup time. This |
123 | should set up all the tables, etc. that the MD part of the assembler | |
124 | needs. */ | |
252b5132 RH |
125 | void |
126 | md_begin () | |
127 | { | |
128 | struct h8_opcode *opcode; | |
129 | char prev_buffer[100]; | |
130 | int idx = 0; | |
131 | ||
83e20b45 JL |
132 | #ifdef BFD_ASSEMBLER |
133 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300)) | |
134 | as_warn (_("could not set architecture and machine")); | |
135 | #endif | |
136 | ||
252b5132 RH |
137 | opcode_hash_control = hash_new (); |
138 | prev_buffer[0] = 0; | |
139 | ||
140 | for (opcode = h8_opcodes; opcode->name; opcode++) | |
141 | { | |
142 | /* Strip off any . part when inserting the opcode and only enter | |
70d6ecf3 | 143 | unique codes into the hash table. */ |
252b5132 RH |
144 | char *src = opcode->name; |
145 | unsigned int len = strlen (src); | |
146 | char *dst = malloc (len + 1); | |
147 | char *buffer = dst; | |
148 | ||
149 | opcode->size = 0; | |
150 | while (*src) | |
151 | { | |
152 | if (*src == '.') | |
153 | { | |
154 | src++; | |
155 | opcode->size = *src; | |
156 | break; | |
157 | } | |
158 | *dst++ = *src++; | |
159 | } | |
160 | *dst++ = 0; | |
161 | if (strcmp (buffer, prev_buffer)) | |
162 | { | |
163 | hash_insert (opcode_hash_control, buffer, (char *) opcode); | |
164 | strcpy (prev_buffer, buffer); | |
165 | idx++; | |
166 | } | |
167 | opcode->idx = idx; | |
168 | ||
70d6ecf3 | 169 | /* Find the number of operands. */ |
252b5132 RH |
170 | opcode->noperands = 0; |
171 | while (opcode->args.nib[opcode->noperands] != E) | |
172 | opcode->noperands++; | |
70d6ecf3 AM |
173 | |
174 | /* Find the length of the opcode in bytes. */ | |
252b5132 RH |
175 | opcode->length = 0; |
176 | while (opcode->data.nib[opcode->length * 2] != E) | |
177 | opcode->length++; | |
178 | } | |
179 | ||
180 | linkrelax = 1; | |
181 | } | |
182 | ||
252b5132 RH |
183 | struct h8_exp |
184 | { | |
185 | char *e_beg; | |
186 | char *e_end; | |
187 | expressionS e_exp; | |
188 | }; | |
70d6ecf3 | 189 | |
252b5132 RH |
190 | int dispreg; |
191 | int opsize; /* Set when a register size is seen */ | |
192 | ||
252b5132 RH |
193 | struct h8_op |
194 | { | |
195 | op_type mode; | |
196 | unsigned reg; | |
197 | expressionS exp; | |
198 | }; | |
199 | ||
200 | /* | |
201 | parse operands | |
202 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp | |
203 | r0l,r0h,..r7l,r7h | |
204 | @WREG | |
205 | @WREG+ | |
206 | @-WREG | |
207 | #const | |
208 | ccr | |
209 | */ | |
210 | ||
bc0d738a NC |
211 | /* Try to parse a reg name. Return the number of chars consumed. */ |
212 | ||
40f09f82 | 213 | static int |
252b5132 RH |
214 | parse_reg (src, mode, reg, direction) |
215 | char *src; | |
216 | op_type *mode; | |
217 | unsigned int *reg; | |
218 | int direction; | |
219 | ||
220 | { | |
221 | char *end; | |
222 | int len; | |
223 | ||
70d6ecf3 | 224 | /* Cribbed from get_symbol_end. */ |
252b5132 RH |
225 | if (!is_name_beginner (*src) || *src == '\001') |
226 | return 0; | |
70d6ecf3 | 227 | end = src + 1; |
252b5132 RH |
228 | while (is_part_of_name (*end) || *end == '\001') |
229 | end++; | |
230 | len = end - src; | |
231 | ||
232 | if (len == 2 && src[0] == 's' && src[1] == 'p') | |
233 | { | |
234 | *mode = PSIZE | REG | direction; | |
235 | *reg = 7; | |
236 | return len; | |
237 | } | |
238 | if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r') | |
239 | { | |
240 | *mode = CCR; | |
241 | *reg = 0; | |
242 | return len; | |
243 | } | |
244 | if (len == 3 && src[0] == 'e' && src[1] == 'x' && src[2] == 'r') | |
245 | { | |
246 | *mode = EXR; | |
247 | *reg = 0; | |
248 | return len; | |
249 | } | |
250 | if (len == 2 && src[0] == 'f' && src[1] == 'p') | |
251 | { | |
252 | *mode = PSIZE | REG | direction; | |
253 | *reg = 6; | |
254 | return len; | |
255 | } | |
256 | if (len == 3 && src[0] == 'e' && src[1] == 'r' | |
257 | && src[2] >= '0' && src[2] <= '7') | |
258 | { | |
259 | *mode = L_32 | REG | direction; | |
260 | *reg = src[2] - '0'; | |
261 | if (!Hmode) | |
262 | as_warn (_("Reg not valid for H8/300")); | |
263 | return len; | |
264 | } | |
265 | if (len == 2 && src[0] == 'e' && src[1] >= '0' && src[1] <= '7') | |
266 | { | |
267 | *mode = L_16 | REG | direction; | |
268 | *reg = src[1] - '0' + 8; | |
269 | if (!Hmode) | |
270 | as_warn (_("Reg not valid for H8/300")); | |
271 | return len; | |
272 | } | |
273 | ||
274 | if (src[0] == 'r') | |
275 | { | |
276 | if (src[1] >= '0' && src[1] <= '7') | |
277 | { | |
278 | if (len == 3 && src[2] == 'l') | |
279 | { | |
280 | *mode = L_8 | REG | direction; | |
281 | *reg = (src[1] - '0') + 8; | |
282 | return len; | |
283 | } | |
284 | if (len == 3 && src[2] == 'h') | |
285 | { | |
286 | *mode = L_8 | REG | direction; | |
287 | *reg = (src[1] - '0'); | |
288 | return len; | |
289 | } | |
290 | if (len == 2) | |
291 | { | |
292 | *mode = L_16 | REG | direction; | |
293 | *reg = (src[1] - '0'); | |
294 | return len; | |
295 | } | |
296 | } | |
297 | } | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
40f09f82 | 302 | static char * |
252b5132 RH |
303 | parse_exp (s, op) |
304 | char *s; | |
70d6ecf3 | 305 | expressionS *op; |
252b5132 RH |
306 | { |
307 | char *save = input_line_pointer; | |
308 | char *new; | |
309 | ||
310 | input_line_pointer = s; | |
311 | expression (op); | |
312 | if (op->X_op == O_absent) | |
313 | as_bad (_("missing operand")); | |
314 | new = input_line_pointer; | |
315 | input_line_pointer = save; | |
316 | return new; | |
317 | } | |
318 | ||
319 | static char * | |
320 | skip_colonthing (ptr, exp, mode) | |
321 | char *ptr; | |
dbbc7809 | 322 | expressionS *exp ATTRIBUTE_UNUSED; |
252b5132 RH |
323 | int *mode; |
324 | { | |
325 | if (*ptr == ':') | |
326 | { | |
327 | ptr++; | |
328 | *mode &= ~SIZE; | |
329 | if (*ptr == '8') | |
330 | { | |
331 | ptr++; | |
332 | /* ff fill any 8 bit quantity */ | |
70d6ecf3 | 333 | /* exp->X_add_number -= 0x100; */ |
252b5132 RH |
334 | *mode |= L_8; |
335 | } | |
336 | else | |
337 | { | |
338 | if (*ptr == '2') | |
339 | { | |
340 | *mode |= L_24; | |
341 | } | |
342 | else if (*ptr == '3') | |
343 | { | |
344 | *mode |= L_32; | |
345 | } | |
346 | else if (*ptr == '1') | |
347 | { | |
348 | *mode |= L_16; | |
349 | } | |
3882b010 | 350 | while (ISDIGIT (*ptr)) |
252b5132 RH |
351 | ptr++; |
352 | } | |
353 | } | |
354 | return ptr; | |
355 | } | |
356 | ||
357 | /* The many forms of operand: | |
358 | ||
359 | Rn Register direct | |
360 | @Rn Register indirect | |
361 | @(exp[:16], Rn) Register indirect with displacement | |
362 | @Rn+ | |
363 | @-Rn | |
70d6ecf3 AM |
364 | @aa:8 absolute 8 bit |
365 | @aa:16 absolute 16 bit | |
252b5132 RH |
366 | @aa absolute 16 bit |
367 | ||
368 | #xx[:size] immediate data | |
70d6ecf3 | 369 | @(exp:[8], pc) pc rel |
252b5132 RH |
370 | @@aa[:8] memory indirect |
371 | ||
372 | */ | |
373 | ||
374 | char * | |
375 | colonmod24 (op, src) | |
376 | struct h8_op *op; | |
377 | char *src; | |
378 | ||
379 | { | |
380 | int mode = 0; | |
381 | src = skip_colonthing (src, &op->exp, &mode); | |
382 | ||
383 | if (!mode) | |
384 | { | |
70d6ecf3 | 385 | /* Choose a default mode. */ |
252b5132 RH |
386 | if (op->exp.X_add_number < -32768 |
387 | || op->exp.X_add_number > 32767) | |
388 | { | |
389 | if (Hmode) | |
390 | mode = L_24; | |
391 | else | |
392 | mode = L_16; | |
393 | } | |
394 | else if (op->exp.X_add_symbol | |
395 | || op->exp.X_op_symbol) | |
396 | mode = DSYMMODE; | |
397 | else | |
398 | mode = DMODE; | |
399 | } | |
400 | op->mode |= mode; | |
401 | return src; | |
402 | ||
403 | } | |
404 | ||
252b5132 RH |
405 | static void |
406 | get_operand (ptr, op, dst, direction) | |
407 | char **ptr; | |
408 | struct h8_op *op; | |
dbbc7809 | 409 | unsigned int dst ATTRIBUTE_UNUSED; |
252b5132 RH |
410 | int direction; |
411 | { | |
412 | char *src = *ptr; | |
413 | op_type mode; | |
414 | unsigned int num; | |
415 | unsigned int len; | |
416 | ||
417 | op->mode = E; | |
418 | ||
419 | /* Gross. Gross. ldm and stm have a format not easily handled | |
420 | by get_operand. We deal with it explicitly here. */ | |
3882b010 L |
421 | if (src[0] == 'e' && src[1] == 'r' && ISDIGIT (src[2]) |
422 | && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && ISDIGIT (src[6])) | |
252b5132 RH |
423 | { |
424 | int low, high; | |
425 | ||
426 | low = src[2] - '0'; | |
427 | high = src[6] - '0'; | |
428 | ||
429 | if (high < low) | |
430 | as_bad (_("Invalid register list for ldm/stm\n")); | |
431 | ||
432 | if (low % 2) | |
433 | as_bad (_("Invalid register list for ldm/stm\n")); | |
434 | ||
435 | if (high - low > 3) | |
436 | as_bad (_("Invalid register list for ldm/stm\n")); | |
437 | ||
438 | if (high - low != 1 | |
439 | && low % 4) | |
440 | as_bad (_("Invalid register list for ldm/stm\n")); | |
441 | ||
442 | /* Even sicker. We encode two registers into op->reg. One | |
443 | for the low register to save, the other for the high | |
444 | register to save; we also set the high bit in op->reg | |
445 | so we know this is "very special". */ | |
446 | op->reg = 0x80000000 | (high << 8) | low; | |
447 | op->mode = REG; | |
448 | *ptr = src + 7; | |
449 | return; | |
450 | } | |
451 | ||
452 | len = parse_reg (src, &op->mode, &op->reg, direction); | |
453 | if (len) | |
454 | { | |
455 | *ptr = src + len; | |
456 | return; | |
457 | } | |
458 | ||
459 | if (*src == '@') | |
460 | { | |
461 | src++; | |
462 | if (*src == '@') | |
463 | { | |
464 | src++; | |
465 | src = parse_exp (src, &op->exp); | |
466 | ||
467 | src = skip_colonthing (src, &op->exp, &op->mode); | |
468 | ||
469 | *ptr = src; | |
470 | ||
471 | op->mode = MEMIND; | |
472 | return; | |
252b5132 RH |
473 | } |
474 | ||
252b5132 RH |
475 | if (*src == '-') |
476 | { | |
477 | src++; | |
478 | len = parse_reg (src, &mode, &num, direction); | |
479 | if (len == 0) | |
480 | { | |
70d6ecf3 | 481 | /* Oops, not a reg after all, must be ordinary exp. */ |
252b5132 | 482 | src--; |
70d6ecf3 | 483 | /* Must be a symbol. */ |
252b5132 RH |
484 | op->mode = ABS | PSIZE | direction; |
485 | *ptr = skip_colonthing (parse_exp (src, &op->exp), | |
486 | &op->exp, &op->mode); | |
487 | ||
488 | return; | |
252b5132 RH |
489 | } |
490 | ||
252b5132 RH |
491 | if ((mode & SIZE) != PSIZE) |
492 | as_bad (_("Wrong size pointer register for architecture.")); | |
493 | op->mode = RDDEC; | |
494 | op->reg = num; | |
495 | *ptr = src + len; | |
496 | return; | |
497 | } | |
498 | if (*src == '(') | |
499 | { | |
70d6ecf3 | 500 | /* Disp. */ |
252b5132 RH |
501 | src++; |
502 | ||
70d6ecf3 | 503 | /* Start off assuming a 16 bit offset. */ |
252b5132 RH |
504 | |
505 | src = parse_exp (src, &op->exp); | |
506 | ||
507 | src = colonmod24 (op, src); | |
508 | ||
509 | if (*src == ')') | |
510 | { | |
511 | src++; | |
512 | op->mode |= ABS | direction; | |
513 | *ptr = src; | |
514 | return; | |
515 | } | |
516 | ||
517 | if (*src != ',') | |
518 | { | |
519 | as_bad (_("expected @(exp, reg16)")); | |
520 | return; | |
521 | ||
522 | } | |
523 | src++; | |
524 | ||
525 | len = parse_reg (src, &mode, &op->reg, direction); | |
526 | if (len == 0 || !(mode & REG)) | |
527 | { | |
528 | as_bad (_("expected @(exp, reg16)")); | |
529 | return; | |
530 | } | |
531 | op->mode |= DISP | direction; | |
532 | dispreg = op->reg; | |
533 | src += len; | |
534 | src = skip_colonthing (src, &op->exp, &op->mode); | |
535 | ||
536 | if (*src != ')' && '(') | |
537 | { | |
538 | as_bad (_("expected @(exp, reg16)")); | |
539 | return; | |
540 | } | |
541 | *ptr = src + 1; | |
542 | ||
543 | return; | |
544 | } | |
545 | len = parse_reg (src, &mode, &num, direction); | |
546 | ||
547 | if (len) | |
548 | { | |
549 | src += len; | |
550 | if (*src == '+') | |
551 | { | |
552 | src++; | |
553 | if ((mode & SIZE) != PSIZE) | |
554 | as_bad (_("Wrong size pointer register for architecture.")); | |
555 | op->mode = RSINC; | |
556 | op->reg = num; | |
557 | *ptr = src; | |
558 | return; | |
559 | } | |
560 | if ((mode & SIZE) != PSIZE) | |
561 | as_bad (_("Wrong size pointer register for architecture.")); | |
562 | ||
563 | op->mode = direction | IND | PSIZE; | |
564 | op->reg = num; | |
565 | *ptr = src; | |
566 | ||
567 | return; | |
568 | } | |
569 | else | |
570 | { | |
571 | /* must be a symbol */ | |
572 | ||
573 | op->mode = ABS | direction; | |
574 | src = parse_exp (src, &op->exp); | |
575 | ||
576 | *ptr = colonmod24 (op, src); | |
577 | ||
578 | return; | |
579 | } | |
580 | } | |
581 | ||
252b5132 RH |
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 | ||
70d6ecf3 | 628 | static char * |
252b5132 RH |
629 | get_operands (noperands, op_end, operand) |
630 | unsigned int noperands; | |
631 | char *op_end; | |
632 | struct h8_op *operand; | |
633 | { | |
634 | char *ptr = op_end; | |
635 | ||
636 | switch (noperands) | |
637 | { | |
638 | case 0: | |
639 | operand[0].mode = 0; | |
640 | operand[1].mode = 0; | |
641 | break; | |
642 | ||
643 | case 1: | |
644 | ptr++; | |
645 | get_operand (&ptr, operand + 0, 0, SRC); | |
646 | if (*ptr == ',') | |
647 | { | |
648 | ptr++; | |
649 | get_operand (&ptr, operand + 1, 1, DST); | |
650 | } | |
651 | else | |
652 | { | |
653 | operand[1].mode = 0; | |
654 | } | |
252b5132 | 655 | break; |
70d6ecf3 | 656 | |
252b5132 RH |
657 | case 2: |
658 | ptr++; | |
659 | get_operand (&ptr, operand + 0, 0, SRC); | |
660 | if (*ptr == ',') | |
661 | ptr++; | |
662 | get_operand (&ptr, operand + 1, 1, DST); | |
663 | break; | |
664 | ||
665 | default: | |
666 | abort (); | |
667 | } | |
668 | ||
252b5132 RH |
669 | return ptr; |
670 | } | |
671 | ||
672 | /* Passed a pointer to a list of opcodes which use different | |
673 | addressing modes, return the opcode which matches the opcodes | |
70d6ecf3 AM |
674 | provided. */ |
675 | static struct h8_opcode * | |
252b5132 RH |
676 | get_specific (opcode, operands, size) |
677 | struct h8_opcode *opcode; | |
678 | struct h8_op *operands; | |
679 | int size; | |
680 | { | |
681 | struct h8_opcode *this_try = opcode; | |
682 | int found = 0; | |
683 | ||
684 | unsigned int this_index = opcode->idx; | |
685 | ||
686 | /* There's only one ldm/stm and it's easier to just | |
687 | get out quick for them. */ | |
688 | if (strcmp (opcode->name, "stm.l") == 0 | |
689 | || strcmp (opcode->name, "ldm.l") == 0) | |
690 | return this_try; | |
691 | ||
692 | while (this_index == opcode->idx && !found) | |
693 | { | |
694 | found = 1; | |
695 | ||
696 | this_try = opcode++; | |
697 | if (this_try->noperands == 0) | |
698 | { | |
699 | int this_size; | |
700 | ||
701 | this_size = this_try->how & SN; | |
702 | if (this_size != size && (this_size != SB || size != SN)) | |
703 | found = 0; | |
704 | } | |
705 | else | |
706 | { | |
707 | unsigned int i; | |
708 | ||
709 | for (i = 0; i < this_try->noperands && found; i++) | |
710 | { | |
711 | op_type op = this_try->args.nib[i]; | |
712 | int x = operands[i].mode; | |
713 | ||
714 | if ((op & (DISP | REG)) == (DISP | REG) | |
715 | && ((x & (DISP | REG)) == (DISP | REG))) | |
716 | { | |
717 | dispreg = operands[i].reg; | |
718 | } | |
719 | else if (op & REG) | |
720 | { | |
721 | if (!(x & REG)) | |
722 | found = 0; | |
723 | ||
724 | if (x & L_P) | |
725 | x = (x & ~L_P) | (Hmode ? L_32 : L_16); | |
726 | if (op & L_P) | |
727 | op = (op & ~L_P) | (Hmode ? L_32 : L_16); | |
728 | ||
729 | opsize = op & SIZE; | |
730 | ||
70d6ecf3 | 731 | /* The size of the reg is v important. */ |
252b5132 RH |
732 | if ((op & SIZE) != (x & SIZE)) |
733 | found = 0; | |
734 | } | |
735 | else if ((op & ABSJMP) && (x & ABS)) | |
736 | { | |
737 | operands[i].mode &= ~ABS; | |
738 | operands[i].mode |= ABSJMP; | |
70d6ecf3 | 739 | /* But it may not be 24 bits long. */ |
252b5132 RH |
740 | if (!Hmode) |
741 | { | |
742 | operands[i].mode &= ~SIZE; | |
743 | operands[i].mode |= L_16; | |
744 | } | |
745 | } | |
746 | else if ((op & (KBIT | DBIT)) && (x & IMM)) | |
747 | { | |
70d6ecf3 | 748 | /* This is ok if the immediate value is sensible. */ |
252b5132 RH |
749 | } |
750 | else if (op & PCREL) | |
751 | { | |
70d6ecf3 | 752 | /* The size of the displacement is important. */ |
252b5132 RH |
753 | if ((op & SIZE) != (x & SIZE)) |
754 | found = 0; | |
755 | } | |
756 | else if ((op & (DISP | IMM | ABS)) | |
757 | && (op & (DISP | IMM | ABS)) == (x & (DISP | IMM | ABS))) | |
758 | { | |
759 | /* Promote a L_24 to L_32 if it makes us match. */ | |
760 | if ((x & L_24) && (op & L_32)) | |
761 | { | |
762 | x &= ~L_24; | |
763 | x |= L_32; | |
764 | } | |
765 | /* Promote an L8 to L_16 if it makes us match. */ | |
70d6ecf3 | 766 | if (op & ABS && op & L_8 && op & DISP) |
252b5132 RH |
767 | { |
768 | if (x & L_16) | |
70d6ecf3 | 769 | found = 1; |
252b5132 RH |
770 | } |
771 | else if ((x & SIZE) != 0 | |
772 | && ((op & SIZE) != (x & SIZE))) | |
773 | found = 0; | |
774 | } | |
775 | else if ((op & MACREG) != (x & MACREG)) | |
776 | { | |
777 | found = 0; | |
778 | } | |
779 | else if ((op & MODE) != (x & MODE)) | |
780 | { | |
781 | found = 0; | |
70d6ecf3 | 782 | } |
252b5132 RH |
783 | } |
784 | } | |
785 | } | |
786 | if (found) | |
787 | return this_try; | |
788 | else | |
789 | return 0; | |
790 | } | |
791 | ||
792 | static void | |
793 | check_operand (operand, width, string) | |
794 | struct h8_op *operand; | |
795 | unsigned int width; | |
796 | char *string; | |
797 | { | |
798 | if (operand->exp.X_add_symbol == 0 | |
799 | && operand->exp.X_op_symbol == 0) | |
800 | { | |
70d6ecf3 AM |
801 | /* No symbol involved, let's look at offset, it's dangerous if |
802 | any of the high bits are not 0 or ff's, find out by oring or | |
803 | anding with the width and seeing if the answer is 0 or all | |
804 | fs. */ | |
252b5132 | 805 | |
252b5132 RH |
806 | if ((operand->exp.X_add_number & ~width) != 0 && |
807 | (operand->exp.X_add_number | width) != (~0)) | |
808 | { | |
70d6ecf3 | 809 | if (width == 255 |
252b5132 RH |
810 | && (operand->exp.X_add_number & 0xff00) == 0xff00) |
811 | { | |
812 | /* Just ignore this one - which happens when trying to | |
813 | fit a 16 bit address truncated into an 8 bit address | |
814 | of something like bset. */ | |
815 | } | |
70d6ecf3 | 816 | else |
252b5132 RH |
817 | { |
818 | as_warn (_("operand %s0x%lx out of range."), string, | |
819 | (unsigned long) operand->exp.X_add_number); | |
820 | } | |
821 | } | |
822 | } | |
252b5132 RH |
823 | } |
824 | ||
825 | /* RELAXMODE has one of 3 values: | |
826 | ||
827 | 0 Output a "normal" reloc, no relaxing possible for this insn/reloc | |
828 | ||
829 | 1 Output a relaxable 24bit absolute mov.w address relocation | |
830 | (may relax into a 16bit absolute address). | |
831 | ||
832 | 2 Output a relaxable 16/24 absolute mov.b address relocation | |
833 | (may relax into an 8bit absolute address). */ | |
834 | ||
835 | static void | |
836 | do_a_fix_imm (offset, operand, relaxmode) | |
837 | int offset; | |
838 | struct h8_op *operand; | |
839 | int relaxmode; | |
840 | { | |
841 | int idx; | |
842 | int size; | |
843 | int where; | |
844 | ||
252b5132 RH |
845 | char *t = operand->mode & IMM ? "#" : "@"; |
846 | ||
847 | if (operand->exp.X_add_symbol == 0) | |
848 | { | |
849 | char *bytes = frag_now->fr_literal + offset; | |
850 | switch (operand->mode & SIZE) | |
851 | { | |
852 | case L_2: | |
853 | check_operand (operand, 0x3, t); | |
854 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
855 | break; | |
856 | case L_3: | |
857 | check_operand (operand, 0x7, t); | |
858 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
859 | break; | |
860 | case L_8: | |
861 | check_operand (operand, 0xff, t); | |
862 | bytes[0] = operand->exp.X_add_number; | |
863 | break; | |
864 | case L_16: | |
865 | check_operand (operand, 0xffff, t); | |
866 | bytes[0] = operand->exp.X_add_number >> 8; | |
867 | bytes[1] = operand->exp.X_add_number >> 0; | |
868 | break; | |
869 | case L_24: | |
870 | check_operand (operand, 0xffffff, t); | |
871 | bytes[0] = operand->exp.X_add_number >> 16; | |
872 | bytes[1] = operand->exp.X_add_number >> 8; | |
873 | bytes[2] = operand->exp.X_add_number >> 0; | |
874 | break; | |
875 | ||
876 | case L_32: | |
70d6ecf3 | 877 | /* This should be done with bfd. */ |
252b5132 RH |
878 | bytes[0] = operand->exp.X_add_number >> 24; |
879 | bytes[1] = operand->exp.X_add_number >> 16; | |
880 | bytes[2] = operand->exp.X_add_number >> 8; | |
881 | bytes[3] = operand->exp.X_add_number >> 0; | |
4132022d AM |
882 | if (relaxmode != 0) |
883 | { | |
884 | idx = (relaxmode == 2) ? R_MOV24B1 : R_MOVL1; | |
885 | fix_new_exp (frag_now, offset, 4, &operand->exp, 0, idx); | |
886 | } | |
252b5132 RH |
887 | break; |
888 | } | |
252b5132 RH |
889 | } |
890 | else | |
891 | { | |
892 | switch (operand->mode & SIZE) | |
893 | { | |
252b5132 RH |
894 | case L_24: |
895 | case L_32: | |
896 | size = 4; | |
897 | where = (operand->mode & SIZE) == L_24 ? -1 : 0; | |
898 | if (relaxmode == 2) | |
899 | idx = R_MOV24B1; | |
900 | else if (relaxmode == 1) | |
901 | idx = R_MOVL1; | |
902 | else | |
903 | idx = R_RELLONG; | |
904 | break; | |
905 | default: | |
70d6ecf3 | 906 | as_bad (_("Can't work out size of operand.\n")); |
252b5132 RH |
907 | case L_16: |
908 | size = 2; | |
909 | where = 0; | |
910 | if (relaxmode == 2) | |
911 | idx = R_MOV16B1; | |
912 | else | |
913 | idx = R_RELWORD; | |
4132022d AM |
914 | operand->exp.X_add_number = |
915 | ((operand->exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; | |
252b5132 RH |
916 | break; |
917 | case L_8: | |
918 | size = 1; | |
919 | where = 0; | |
920 | idx = R_RELBYTE; | |
4132022d AM |
921 | operand->exp.X_add_number = |
922 | ((operand->exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 RH |
923 | } |
924 | ||
925 | fix_new_exp (frag_now, | |
926 | offset + where, | |
927 | size, | |
928 | &operand->exp, | |
929 | 0, | |
930 | idx); | |
931 | } | |
252b5132 RH |
932 | } |
933 | ||
70d6ecf3 | 934 | /* Now we know what sort of opcodes it is, let's build the bytes. */ |
252b5132 RH |
935 | static void |
936 | build_bytes (this_try, operand) | |
937 | struct h8_opcode *this_try; | |
938 | struct h8_op *operand; | |
939 | { | |
940 | unsigned int i; | |
941 | ||
942 | char *output = frag_more (this_try->length); | |
943 | op_type *nibble_ptr = this_try->data.nib; | |
944 | op_type c; | |
945 | unsigned int nibble_count = 0; | |
946 | int absat; | |
947 | int immat; | |
948 | int nib; | |
949 | int movb = 0; | |
950 | char asnibbles[30]; | |
951 | char *p = asnibbles; | |
952 | ||
953 | if (!(this_try->inbase || Hmode)) | |
954 | as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"), | |
955 | this_try->name); | |
956 | ||
957 | while (*nibble_ptr != E) | |
958 | { | |
959 | int d; | |
960 | c = *nibble_ptr++; | |
961 | ||
962 | d = (c & (DST | SRC_IN_DST)) != 0; | |
963 | ||
964 | if (c < 16) | |
965 | { | |
966 | nib = c; | |
967 | } | |
968 | else | |
969 | { | |
252b5132 RH |
970 | if (c & (REG | IND | INC | DEC)) |
971 | { | |
972 | nib = operand[d].reg; | |
973 | } | |
974 | else if ((c & DISPREG) == (DISPREG)) | |
975 | { | |
976 | nib = dispreg; | |
977 | } | |
70d6ecf3 | 978 | else if (c & ABS) |
252b5132 RH |
979 | { |
980 | operand[d].mode = c; | |
981 | absat = nibble_count / 2; | |
982 | nib = 0; | |
983 | } | |
984 | else if (c & (IMM | PCREL | ABS | ABSJMP | DISP)) | |
985 | { | |
986 | operand[d].mode = c; | |
987 | immat = nibble_count / 2; | |
988 | nib = 0; | |
989 | } | |
990 | else if (c & IGNORE) | |
991 | { | |
992 | nib = 0; | |
993 | } | |
994 | else if (c & DBIT) | |
995 | { | |
996 | switch (operand[0].exp.X_add_number) | |
997 | { | |
998 | case 1: | |
999 | nib = c; | |
1000 | break; | |
1001 | case 2: | |
1002 | nib = 0x8 | c; | |
1003 | break; | |
1004 | default: | |
1005 | as_bad (_("Need #1 or #2 here")); | |
1006 | } | |
1007 | } | |
1008 | else if (c & KBIT) | |
1009 | { | |
1010 | switch (operand[0].exp.X_add_number) | |
1011 | { | |
1012 | case 1: | |
1013 | nib = 0; | |
1014 | break; | |
1015 | case 2: | |
1016 | nib = 8; | |
1017 | break; | |
1018 | case 4: | |
1019 | if (!Hmode) | |
1020 | as_warn (_("#4 not valid on H8/300.")); | |
1021 | nib = 9; | |
1022 | break; | |
1023 | ||
1024 | default: | |
1025 | as_bad (_("Need #1 or #2 here")); | |
1026 | break; | |
1027 | } | |
70d6ecf3 | 1028 | /* Stop it making a fix. */ |
252b5132 RH |
1029 | operand[0].mode = 0; |
1030 | } | |
1031 | ||
1032 | if (c & MEMRELAX) | |
1033 | { | |
1034 | operand[d].mode |= MEMRELAX; | |
1035 | } | |
1036 | ||
1037 | if (c & B31) | |
1038 | { | |
1039 | nib |= 0x8; | |
1040 | } | |
1041 | ||
1042 | if (c & MACREG) | |
1043 | { | |
f0c56b90 NC |
1044 | if (operand[0].mode == MACREG) |
1045 | /* stmac has mac[hl] as the first operand. */ | |
1046 | nib = 2 + operand[0].reg; | |
1047 | else | |
1048 | /* ldmac has mac[hl] as the second operand. */ | |
1049 | nib = 2 + operand[1].reg; | |
252b5132 RH |
1050 | } |
1051 | } | |
1052 | nibble_count++; | |
1053 | ||
1054 | *p++ = nib; | |
1055 | } | |
1056 | ||
1057 | /* Disgusting. Why, oh why didn't someone ask us for advice | |
1058 | on the assembler format. */ | |
1059 | if (strcmp (this_try->name, "stm.l") == 0 | |
1060 | || strcmp (this_try->name, "ldm.l") == 0) | |
1061 | { | |
1062 | int high, low; | |
1063 | high = (operand[this_try->name[0] == 'l' ? 1 : 0].reg >> 8) & 0xf; | |
1064 | low = operand[this_try->name[0] == 'l' ? 1 : 0].reg & 0xf; | |
1065 | ||
1066 | asnibbles[2] = high - low; | |
1067 | asnibbles[7] = (this_try->name[0] == 'l') ? high : low; | |
1068 | } | |
1069 | ||
1070 | for (i = 0; i < this_try->length; i++) | |
1071 | { | |
1072 | output[i] = (asnibbles[i * 2] << 4) | asnibbles[i * 2 + 1]; | |
1073 | } | |
1074 | ||
1075 | /* Note if this is a movb instruction -- there's a special relaxation | |
1076 | which only applies to them. */ | |
1077 | if (strcmp (this_try->name, "mov.b") == 0) | |
1078 | movb = 1; | |
1079 | ||
70d6ecf3 | 1080 | /* Output any fixes. */ |
252b5132 RH |
1081 | for (i = 0; i < 2; i++) |
1082 | { | |
1083 | int x = operand[i].mode; | |
1084 | ||
1085 | if (x & (IMM | DISP)) | |
1086 | { | |
1087 | do_a_fix_imm (output - frag_now->fr_literal + immat, | |
1088 | operand + i, x & MEMRELAX != 0); | |
1089 | } | |
1090 | else if (x & ABS) | |
1091 | { | |
1092 | do_a_fix_imm (output - frag_now->fr_literal + absat, | |
1093 | operand + i, x & MEMRELAX ? movb + 1 : 0); | |
1094 | } | |
1095 | else if (x & PCREL) | |
1096 | { | |
1097 | int size16 = x & L_16; | |
1098 | int where = size16 ? 2 : 1; | |
1099 | int size = size16 ? 2 : 1; | |
1100 | int type = size16 ? R_PCRWORD : R_PCRBYTE; | |
36ed2fff | 1101 | fixS *fixP; |
252b5132 RH |
1102 | |
1103 | check_operand (operand + i, size16 ? 0x7fff : 0x7f, "@"); | |
1104 | ||
1105 | if (operand[i].exp.X_add_number & 1) | |
1106 | { | |
1107 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1108 | (unsigned long) operand->exp.X_add_number); | |
1109 | } | |
1110 | ||
36ed2fff JL |
1111 | #ifndef OBJ_ELF |
1112 | /* The COFF port has always been off by one, changing it | |
1113 | now would be an incompatible change, so we leave it as-is. | |
1114 | ||
1115 | We don't want to do this for ELF as we want to be | |
1116 | compatible with the proposed ELF format from Hitachi. */ | |
252b5132 | 1117 | operand[i].exp.X_add_number -= 1; |
36ed2fff JL |
1118 | #endif |
1119 | ||
4132022d AM |
1120 | operand[i].exp.X_add_number = |
1121 | ((operand[i].exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 | 1122 | |
36ed2fff JL |
1123 | fixP = fix_new_exp (frag_now, |
1124 | output - frag_now->fr_literal + where, | |
1125 | size, | |
1126 | &operand[i].exp, | |
1127 | 1, | |
1128 | type); | |
1129 | fixP->fx_signed = 1; | |
252b5132 RH |
1130 | } |
1131 | else if (x & MEMIND) | |
1132 | { | |
252b5132 RH |
1133 | check_operand (operand + i, 0xff, "@@"); |
1134 | fix_new_exp (frag_now, | |
1135 | output - frag_now->fr_literal + 1, | |
1136 | 1, | |
1137 | &operand[i].exp, | |
1138 | 0, | |
1139 | R_MEM_INDIRECT); | |
1140 | } | |
1141 | else if (x & ABSJMP) | |
1142 | { | |
3c1ba8a3 JL |
1143 | int where = 0; |
1144 | ||
1145 | #ifdef OBJ_ELF | |
1146 | /* To be compatible with the proposed H8 ELF format, we | |
1147 | want the relocation's offset to point to the first byte | |
1148 | that will be modified, not to the start of the instruction. */ | |
1149 | where += 1; | |
3c1ba8a3 | 1150 | #endif |
de342d07 | 1151 | |
70d6ecf3 | 1152 | /* This jmp may be a jump or a branch. */ |
252b5132 RH |
1153 | |
1154 | check_operand (operand + i, Hmode ? 0xffffff : 0xffff, "@"); | |
1155 | if (operand[i].exp.X_add_number & 1) | |
1156 | { | |
1157 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1158 | (unsigned long) operand->exp.X_add_number); | |
1159 | } | |
1160 | if (!Hmode) | |
70d6ecf3 | 1161 | operand[i].exp.X_add_number = |
4132022d | 1162 | ((operand[i].exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; |
252b5132 | 1163 | fix_new_exp (frag_now, |
3c1ba8a3 | 1164 | output - frag_now->fr_literal + where, |
252b5132 RH |
1165 | 4, |
1166 | &operand[i].exp, | |
1167 | 0, | |
1168 | R_JMPL1); | |
1169 | } | |
1170 | } | |
252b5132 RH |
1171 | } |
1172 | ||
70d6ecf3 AM |
1173 | /* Try to give an intelligent error message for common and simple to |
1174 | detect errors. */ | |
252b5132 RH |
1175 | static void |
1176 | clever_message (opcode, operand) | |
1177 | struct h8_opcode *opcode; | |
1178 | struct h8_op *operand; | |
1179 | { | |
70d6ecf3 | 1180 | /* Find out if there was more than one possible opcode. */ |
252b5132 RH |
1181 | |
1182 | if ((opcode + 1)->idx != opcode->idx) | |
1183 | { | |
1184 | unsigned int argn; | |
1185 | ||
70d6ecf3 AM |
1186 | /* Only one opcode of this flavour, try to guess which operand |
1187 | didn't match. */ | |
252b5132 RH |
1188 | for (argn = 0; argn < opcode->noperands; argn++) |
1189 | { | |
1190 | switch (opcode->args.nib[argn]) | |
1191 | { | |
1192 | case RD16: | |
1193 | if (operand[argn].mode != RD16) | |
1194 | { | |
1195 | as_bad (_("destination operand must be 16 bit register")); | |
1196 | return; | |
1197 | ||
1198 | } | |
1199 | break; | |
1200 | ||
1201 | case RS8: | |
252b5132 RH |
1202 | if (operand[argn].mode != RS8) |
1203 | { | |
1204 | as_bad (_("source operand must be 8 bit register")); | |
1205 | return; | |
1206 | } | |
1207 | break; | |
1208 | ||
1209 | case ABS16DST: | |
1210 | if (operand[argn].mode != ABS16DST) | |
1211 | { | |
1212 | as_bad (_("destination operand must be 16bit absolute address")); | |
1213 | return; | |
1214 | } | |
1215 | break; | |
1216 | case RD8: | |
1217 | if (operand[argn].mode != RD8) | |
1218 | { | |
1219 | as_bad (_("destination operand must be 8 bit register")); | |
1220 | return; | |
1221 | } | |
1222 | break; | |
1223 | ||
252b5132 RH |
1224 | case ABS16SRC: |
1225 | if (operand[argn].mode != ABS16SRC) | |
1226 | { | |
1227 | as_bad (_("source operand must be 16bit absolute address")); | |
1228 | return; | |
1229 | } | |
1230 | break; | |
1231 | ||
1232 | } | |
1233 | } | |
1234 | } | |
1235 | as_bad (_("invalid operands")); | |
1236 | } | |
1237 | ||
70d6ecf3 AM |
1238 | /* This is the guts of the machine-dependent assembler. STR points to |
1239 | a machine dependent instruction. This function is supposed to emit | |
1240 | the frags/bytes it assembles. */ | |
252b5132 RH |
1241 | void |
1242 | md_assemble (str) | |
1243 | char *str; | |
1244 | { | |
1245 | char *op_start; | |
1246 | char *op_end; | |
1247 | struct h8_op operand[2]; | |
1248 | struct h8_opcode *opcode; | |
1249 | struct h8_opcode *prev_opcode; | |
1250 | ||
1251 | char *dot = 0; | |
1252 | char c; | |
1253 | int size; | |
1254 | ||
70d6ecf3 | 1255 | /* Drop leading whitespace. */ |
252b5132 RH |
1256 | while (*str == ' ') |
1257 | str++; | |
1258 | ||
70d6ecf3 | 1259 | /* Find the op code end. */ |
252b5132 RH |
1260 | for (op_start = op_end = str; |
1261 | *op_end != 0 && *op_end != ' '; | |
1262 | op_end++) | |
1263 | { | |
1264 | if (*op_end == '.') | |
1265 | { | |
1266 | dot = op_end + 1; | |
1267 | *op_end = 0; | |
1268 | op_end += 2; | |
1269 | break; | |
1270 | } | |
1271 | } | |
1272 | ||
252b5132 RH |
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 | ||
70d6ecf3 | 1290 | /* We used to set input_line_pointer to the result of get_operands, |
252b5132 RH |
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 | { | |
70d6ecf3 | 1319 | /* Couldn't find an opcode which matched the operands. */ |
252b5132 RH |
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); | |
252b5132 RH |
1337 | } |
1338 | ||
5facebfc | 1339 | #ifndef BFD_ASSEMBLER |
252b5132 RH |
1340 | void |
1341 | tc_crawl_symbol_chain (headers) | |
70d6ecf3 | 1342 | object_headers *headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1343 | { |
1344 | printf (_("call to tc_crawl_symbol_chain \n")); | |
1345 | } | |
f333765f | 1346 | #endif |
252b5132 RH |
1347 | |
1348 | symbolS * | |
1349 | md_undefined_symbol (name) | |
dbbc7809 | 1350 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
1351 | { |
1352 | return 0; | |
1353 | } | |
1354 | ||
5facebfc | 1355 | #ifndef BFD_ASSEMBLER |
252b5132 RH |
1356 | void |
1357 | tc_headers_hook (headers) | |
70d6ecf3 | 1358 | object_headers *headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1359 | { |
1360 | printf (_("call to tc_headers_hook \n")); | |
1361 | } | |
f333765f | 1362 | #endif |
252b5132 RH |
1363 | |
1364 | /* Various routines to kill one day */ | |
1365 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1366 | #define MAX_LITTLENUMS 6 | |
1367 | ||
70d6ecf3 AM |
1368 | /* Turn a string in input_line_pointer into a floating point constant |
1369 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
bc0d738a | 1370 | of LITTLENUMS emitted is stored in *SIZEP. An error message is |
70d6ecf3 | 1371 | returned, or NULL on OK. */ |
bc0d738a | 1372 | |
252b5132 RH |
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 | }; | |
70d6ecf3 AM |
1432 | |
1433 | size_t md_longopts_size = sizeof (md_longopts); | |
252b5132 RH |
1434 | |
1435 | int | |
1436 | md_parse_option (c, arg) | |
dbbc7809 JL |
1437 | int c ATTRIBUTE_UNUSED; |
1438 | char *arg ATTRIBUTE_UNUSED; | |
252b5132 RH |
1439 | { |
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | void | |
1444 | md_show_usage (stream) | |
dbbc7809 | 1445 | FILE *stream ATTRIBUTE_UNUSED; |
252b5132 RH |
1446 | { |
1447 | } | |
1448 | \f | |
1449 | void | |
1450 | tc_aout_fix_to_chars () | |
1451 | { | |
1452 | printf (_("call to tc_aout_fix_to_chars \n")); | |
1453 | abort (); | |
1454 | } | |
1455 | ||
1456 | void | |
1457 | md_convert_frag (headers, seg, fragP) | |
36ed2fff JL |
1458 | #ifdef BFD_ASSEMBLER |
1459 | bfd *headers ATTRIBUTE_UNUSED; | |
1460 | #else | |
dbbc7809 | 1461 | object_headers *headers ATTRIBUTE_UNUSED; |
36ed2fff | 1462 | #endif |
dbbc7809 JL |
1463 | segT seg ATTRIBUTE_UNUSED; |
1464 | fragS *fragP ATTRIBUTE_UNUSED; | |
252b5132 RH |
1465 | { |
1466 | printf (_("call to md_convert_frag \n")); | |
1467 | abort (); | |
1468 | } | |
1469 | ||
3c1ba8a3 JL |
1470 | #ifdef BFD_ASSEMBLER |
1471 | valueT | |
1472 | md_section_align (segment, size) | |
1473 | segT segment; | |
1474 | valueT size; | |
1475 | { | |
1476 | int align = bfd_get_section_alignment (stdoutput, segment); | |
1477 | return ((size + (1 << align) - 1) & (-1 << align)); | |
1478 | } | |
1479 | #else | |
70d6ecf3 | 1480 | valueT |
252b5132 RH |
1481 | md_section_align (seg, size) |
1482 | segT seg; | |
1483 | valueT size; | |
1484 | { | |
70d6ecf3 | 1485 | return ((size + (1 << section_alignment[(int) seg]) - 1) |
3c1ba8a3 | 1486 | & (-1 << section_alignment[(int) seg])); |
252b5132 | 1487 | } |
3c1ba8a3 JL |
1488 | #endif |
1489 | ||
252b5132 | 1490 | |
3c1ba8a3 JL |
1491 | #ifdef BFD_ASSEMBLER |
1492 | int | |
1493 | md_apply_fix (fixP, valp) | |
1494 | fixS *fixP; | |
1495 | valueT *valp; | |
1496 | #else | |
252b5132 RH |
1497 | void |
1498 | md_apply_fix (fixP, val) | |
1499 | fixS *fixP; | |
1500 | long val; | |
3c1ba8a3 | 1501 | #endif |
252b5132 RH |
1502 | { |
1503 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
3c1ba8a3 JL |
1504 | #ifdef BFD_ASSEMBLER |
1505 | long val = *valp; | |
1506 | #endif | |
252b5132 RH |
1507 | |
1508 | switch (fixP->fx_size) | |
1509 | { | |
1510 | case 1: | |
1511 | *buf++ = val; | |
1512 | break; | |
1513 | case 2: | |
1514 | *buf++ = (val >> 8); | |
1515 | *buf++ = val; | |
1516 | break; | |
1517 | case 4: | |
1518 | *buf++ = (val >> 24); | |
1519 | *buf++ = (val >> 16); | |
1520 | *buf++ = (val >> 8); | |
1521 | *buf++ = val; | |
1522 | break; | |
1523 | default: | |
1524 | abort (); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | int | |
1529 | md_estimate_size_before_relax (fragP, segment_type) | |
dbbc7809 JL |
1530 | register fragS *fragP ATTRIBUTE_UNUSED; |
1531 | register segT segment_type ATTRIBUTE_UNUSED; | |
252b5132 RH |
1532 | { |
1533 | printf (_("call tomd_estimate_size_before_relax \n")); | |
1534 | abort (); | |
1535 | } | |
1536 | ||
70d6ecf3 | 1537 | /* Put number into target byte order. */ |
252b5132 RH |
1538 | void |
1539 | md_number_to_chars (ptr, use, nbytes) | |
1540 | char *ptr; | |
1541 | valueT use; | |
1542 | int nbytes; | |
1543 | { | |
1544 | number_to_chars_bigendian (ptr, use, nbytes); | |
1545 | } | |
70d6ecf3 | 1546 | |
252b5132 RH |
1547 | long |
1548 | md_pcrel_from (fixP) | |
dbbc7809 | 1549 | fixS *fixP ATTRIBUTE_UNUSED; |
252b5132 RH |
1550 | { |
1551 | abort (); | |
1552 | } | |
1553 | ||
5facebfc | 1554 | #ifndef BFD_ASSEMBLER |
252b5132 RH |
1555 | void |
1556 | tc_reloc_mangle (fix_ptr, intr, base) | |
1557 | fixS *fix_ptr; | |
1558 | struct internal_reloc *intr; | |
1559 | bfd_vma base; | |
1560 | ||
1561 | { | |
1562 | symbolS *symbol_ptr; | |
1563 | ||
1564 | symbol_ptr = fix_ptr->fx_addsy; | |
1565 | ||
1566 | /* If this relocation is attached to a symbol then it's ok | |
70d6ecf3 | 1567 | to output it. */ |
252b5132 RH |
1568 | if (fix_ptr->fx_r_type == TC_CONS_RELOC) |
1569 | { | |
1570 | /* cons likes to create reloc32's whatever the size of the reloc.. | |
1571 | */ | |
1572 | switch (fix_ptr->fx_size) | |
1573 | { | |
1574 | case 4: | |
1575 | intr->r_type = R_RELLONG; | |
1576 | break; | |
1577 | case 2: | |
1578 | intr->r_type = R_RELWORD; | |
1579 | break; | |
1580 | case 1: | |
1581 | intr->r_type = R_RELBYTE; | |
1582 | break; | |
1583 | default: | |
1584 | abort (); | |
252b5132 | 1585 | } |
252b5132 RH |
1586 | } |
1587 | else | |
1588 | { | |
1589 | intr->r_type = fix_ptr->fx_r_type; | |
1590 | } | |
1591 | ||
1592 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; | |
1593 | intr->r_offset = fix_ptr->fx_offset; | |
1594 | ||
1595 | if (symbol_ptr) | |
1596 | { | |
1597 | if (symbol_ptr->sy_number != -1) | |
1598 | intr->r_symndx = symbol_ptr->sy_number; | |
1599 | else | |
1600 | { | |
1601 | symbolS *segsym; | |
1602 | ||
1603 | /* This case arises when a reference is made to `.'. */ | |
1604 | segsym = seg_info (S_GET_SEGMENT (symbol_ptr))->dot; | |
1605 | if (segsym == NULL) | |
1606 | intr->r_symndx = -1; | |
1607 | else | |
1608 | { | |
1609 | intr->r_symndx = segsym->sy_number; | |
1610 | intr->r_offset += S_GET_VALUE (symbol_ptr); | |
1611 | } | |
1612 | } | |
1613 | } | |
1614 | else | |
1615 | intr->r_symndx = -1; | |
252b5132 | 1616 | } |
5facebfc | 1617 | #else /* BFD_ASSEMBLER */ |
f333765f JL |
1618 | arelent * |
1619 | tc_gen_reloc (section, fixp) | |
1620 | asection *section ATTRIBUTE_UNUSED; | |
1621 | fixS *fixp; | |
1622 | { | |
1623 | arelent *rel; | |
1624 | bfd_reloc_code_real_type r_type; | |
1625 | ||
de342d07 JL |
1626 | if (fixp->fx_addsy && fixp->fx_subsy) |
1627 | { | |
1628 | if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy)) | |
1629 | || S_GET_SEGMENT (fixp->fx_addsy) == undefined_section) | |
1630 | { | |
1631 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1632 | "Difference of symbols in different sections is not supported"); | |
1633 | return NULL; | |
1634 | } | |
1635 | } | |
1636 | ||
f333765f JL |
1637 | rel = (arelent *) xmalloc (sizeof (arelent)); |
1638 | rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
1639 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
1640 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
1641 | rel->addend = fixp->fx_offset; | |
1642 | ||
1643 | r_type = fixp->fx_r_type; | |
1644 | ||
1645 | #define DEBUG 0 | |
1646 | #if DEBUG | |
1647 | fprintf (stderr, "%s\n", bfd_get_reloc_code_name (r_type)); | |
1648 | fflush(stderr); | |
1649 | #endif | |
1650 | rel->howto = bfd_reloc_type_lookup (stdoutput, r_type); | |
1651 | if (rel->howto == NULL) | |
1652 | { | |
1653 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1654 | _("Cannot represent relocation type %s"), | |
1655 | bfd_get_reloc_code_name (r_type)); | |
1656 | return NULL; | |
1657 | } | |
1658 | ||
1659 | return rel; | |
1660 | } | |
1661 | #endif |