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 | ||
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" | |
31 | #include <ctype.h> | |
32 | ||
63a0b638 | 33 | const char comment_chars[] = ";"; |
252b5132 | 34 | const char line_comment_chars[] = "#"; |
63a0b638 | 35 | const char line_separator_chars[] = ""; |
252b5132 RH |
36 | |
37 | /* This table describes all the machine specific pseudo-ops the assembler | |
38 | has to support. The fields are: | |
39 | pseudo-op name without dot | |
40 | function to call to execute this pseudo-op | |
41 | Integer arg to pass to the function | |
42 | */ | |
43 | ||
44 | void cons (); | |
45 | ||
46 | int Hmode; | |
47 | int Smode; | |
48 | #define PSIZE (Hmode ? L_32 : L_16) | |
49 | #define DMODE (L_16) | |
50 | #define DSYMMODE (Hmode ? L_24 : L_16) | |
51 | int bsize = L_8; /* default branch displacement */ | |
52 | ||
252b5132 RH |
53 | void |
54 | h8300hmode () | |
55 | { | |
56 | Hmode = 1; | |
57 | Smode = 0; | |
58 | } | |
59 | ||
60 | void | |
61 | h8300smode () | |
62 | { | |
63 | Smode = 1; | |
64 | Hmode = 1; | |
65 | } | |
70d6ecf3 | 66 | |
252b5132 RH |
67 | void |
68 | sbranch (size) | |
69 | int size; | |
70 | { | |
71 | bsize = size; | |
72 | } | |
73 | ||
70d6ecf3 AM |
74 | static void |
75 | pint () | |
252b5132 RH |
76 | { |
77 | cons (Hmode ? 4 : 2); | |
78 | } | |
79 | ||
80 | const pseudo_typeS md_pseudo_table[] = | |
81 | { | |
252b5132 RH |
82 | {"h8300h", h8300hmode, 0}, |
83 | {"h8300s", h8300smode, 0}, | |
84 | {"sbranch", sbranch, L_8}, | |
85 | {"lbranch", sbranch, L_16}, | |
86 | ||
87 | {"int", pint, 0}, | |
88 | {"data.b", cons, 1}, | |
89 | {"data.w", cons, 2}, | |
90 | {"data.l", cons, 4}, | |
91 | {"form", listing_psize, 0}, | |
92 | {"heading", listing_title, 0}, | |
93 | {"import", s_ignore, 0}, | |
94 | {"page", listing_eject, 0}, | |
95 | {"program", s_ignore, 0}, | |
96 | {0, 0, 0} | |
97 | }; | |
98 | ||
99 | const int md_reloc_size; | |
100 | ||
101 | const char EXP_CHARS[] = "eE"; | |
102 | ||
103 | /* Chars that mean this number is a floating point constant */ | |
104 | /* As in 0f12.456 */ | |
105 | /* or 0d1.2345e12 */ | |
106 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
107 | ||
108 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ | |
109 | ||
70d6ecf3 AM |
110 | /* This function is called once, at assembler startup time. This |
111 | should set up all the tables, etc. that the MD part of the assembler | |
112 | needs. */ | |
252b5132 RH |
113 | void |
114 | md_begin () | |
115 | { | |
116 | struct h8_opcode *opcode; | |
117 | char prev_buffer[100]; | |
118 | int idx = 0; | |
119 | ||
120 | opcode_hash_control = hash_new (); | |
121 | prev_buffer[0] = 0; | |
122 | ||
123 | for (opcode = h8_opcodes; opcode->name; opcode++) | |
124 | { | |
125 | /* Strip off any . part when inserting the opcode and only enter | |
70d6ecf3 | 126 | unique codes into the hash table. */ |
252b5132 RH |
127 | char *src = opcode->name; |
128 | unsigned int len = strlen (src); | |
129 | char *dst = malloc (len + 1); | |
130 | char *buffer = dst; | |
131 | ||
132 | opcode->size = 0; | |
133 | while (*src) | |
134 | { | |
135 | if (*src == '.') | |
136 | { | |
137 | src++; | |
138 | opcode->size = *src; | |
139 | break; | |
140 | } | |
141 | *dst++ = *src++; | |
142 | } | |
143 | *dst++ = 0; | |
144 | if (strcmp (buffer, prev_buffer)) | |
145 | { | |
146 | hash_insert (opcode_hash_control, buffer, (char *) opcode); | |
147 | strcpy (prev_buffer, buffer); | |
148 | idx++; | |
149 | } | |
150 | opcode->idx = idx; | |
151 | ||
70d6ecf3 | 152 | /* Find the number of operands. */ |
252b5132 RH |
153 | opcode->noperands = 0; |
154 | while (opcode->args.nib[opcode->noperands] != E) | |
155 | opcode->noperands++; | |
70d6ecf3 AM |
156 | |
157 | /* Find the length of the opcode in bytes. */ | |
252b5132 RH |
158 | opcode->length = 0; |
159 | while (opcode->data.nib[opcode->length * 2] != E) | |
160 | opcode->length++; | |
161 | } | |
162 | ||
163 | linkrelax = 1; | |
164 | } | |
165 | ||
252b5132 RH |
166 | struct h8_exp |
167 | { | |
168 | char *e_beg; | |
169 | char *e_end; | |
170 | expressionS e_exp; | |
171 | }; | |
70d6ecf3 | 172 | |
252b5132 RH |
173 | int dispreg; |
174 | int opsize; /* Set when a register size is seen */ | |
175 | ||
252b5132 RH |
176 | struct h8_op |
177 | { | |
178 | op_type mode; | |
179 | unsigned reg; | |
180 | expressionS exp; | |
181 | }; | |
182 | ||
183 | /* | |
184 | parse operands | |
185 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp | |
186 | r0l,r0h,..r7l,r7h | |
187 | @WREG | |
188 | @WREG+ | |
189 | @-WREG | |
190 | #const | |
191 | ccr | |
192 | */ | |
193 | ||
bc0d738a NC |
194 | /* Try to parse a reg name. Return the number of chars consumed. */ |
195 | ||
40f09f82 | 196 | static int |
252b5132 RH |
197 | parse_reg (src, mode, reg, direction) |
198 | char *src; | |
199 | op_type *mode; | |
200 | unsigned int *reg; | |
201 | int direction; | |
202 | ||
203 | { | |
204 | char *end; | |
205 | int len; | |
206 | ||
70d6ecf3 | 207 | /* Cribbed from get_symbol_end. */ |
252b5132 RH |
208 | if (!is_name_beginner (*src) || *src == '\001') |
209 | return 0; | |
70d6ecf3 | 210 | end = src + 1; |
252b5132 RH |
211 | while (is_part_of_name (*end) || *end == '\001') |
212 | end++; | |
213 | len = end - src; | |
214 | ||
215 | if (len == 2 && src[0] == 's' && src[1] == 'p') | |
216 | { | |
217 | *mode = PSIZE | REG | direction; | |
218 | *reg = 7; | |
219 | return len; | |
220 | } | |
221 | if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r') | |
222 | { | |
223 | *mode = CCR; | |
224 | *reg = 0; | |
225 | return len; | |
226 | } | |
227 | if (len == 3 && src[0] == 'e' && src[1] == 'x' && src[2] == 'r') | |
228 | { | |
229 | *mode = EXR; | |
230 | *reg = 0; | |
231 | return len; | |
232 | } | |
233 | if (len == 2 && src[0] == 'f' && src[1] == 'p') | |
234 | { | |
235 | *mode = PSIZE | REG | direction; | |
236 | *reg = 6; | |
237 | return len; | |
238 | } | |
239 | if (len == 3 && src[0] == 'e' && src[1] == 'r' | |
240 | && src[2] >= '0' && src[2] <= '7') | |
241 | { | |
242 | *mode = L_32 | REG | direction; | |
243 | *reg = src[2] - '0'; | |
244 | if (!Hmode) | |
245 | as_warn (_("Reg not valid for H8/300")); | |
246 | return len; | |
247 | } | |
248 | if (len == 2 && src[0] == 'e' && src[1] >= '0' && src[1] <= '7') | |
249 | { | |
250 | *mode = L_16 | REG | direction; | |
251 | *reg = src[1] - '0' + 8; | |
252 | if (!Hmode) | |
253 | as_warn (_("Reg not valid for H8/300")); | |
254 | return len; | |
255 | } | |
256 | ||
257 | if (src[0] == 'r') | |
258 | { | |
259 | if (src[1] >= '0' && src[1] <= '7') | |
260 | { | |
261 | if (len == 3 && src[2] == 'l') | |
262 | { | |
263 | *mode = L_8 | REG | direction; | |
264 | *reg = (src[1] - '0') + 8; | |
265 | return len; | |
266 | } | |
267 | if (len == 3 && src[2] == 'h') | |
268 | { | |
269 | *mode = L_8 | REG | direction; | |
270 | *reg = (src[1] - '0'); | |
271 | return len; | |
272 | } | |
273 | if (len == 2) | |
274 | { | |
275 | *mode = L_16 | REG | direction; | |
276 | *reg = (src[1] - '0'); | |
277 | return len; | |
278 | } | |
279 | } | |
280 | } | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
40f09f82 | 285 | static char * |
252b5132 RH |
286 | parse_exp (s, op) |
287 | char *s; | |
70d6ecf3 | 288 | expressionS *op; |
252b5132 RH |
289 | { |
290 | char *save = input_line_pointer; | |
291 | char *new; | |
292 | ||
293 | input_line_pointer = s; | |
294 | expression (op); | |
295 | if (op->X_op == O_absent) | |
296 | as_bad (_("missing operand")); | |
297 | new = input_line_pointer; | |
298 | input_line_pointer = save; | |
299 | return new; | |
300 | } | |
301 | ||
302 | static char * | |
303 | skip_colonthing (ptr, exp, mode) | |
304 | char *ptr; | |
dbbc7809 | 305 | expressionS *exp ATTRIBUTE_UNUSED; |
252b5132 RH |
306 | int *mode; |
307 | { | |
308 | if (*ptr == ':') | |
309 | { | |
310 | ptr++; | |
311 | *mode &= ~SIZE; | |
312 | if (*ptr == '8') | |
313 | { | |
314 | ptr++; | |
315 | /* ff fill any 8 bit quantity */ | |
70d6ecf3 | 316 | /* exp->X_add_number -= 0x100; */ |
252b5132 RH |
317 | *mode |= L_8; |
318 | } | |
319 | else | |
320 | { | |
321 | if (*ptr == '2') | |
322 | { | |
323 | *mode |= L_24; | |
324 | } | |
325 | else if (*ptr == '3') | |
326 | { | |
327 | *mode |= L_32; | |
328 | } | |
329 | else if (*ptr == '1') | |
330 | { | |
331 | *mode |= L_16; | |
332 | } | |
333 | while (isdigit (*ptr)) | |
334 | ptr++; | |
335 | } | |
336 | } | |
337 | return ptr; | |
338 | } | |
339 | ||
340 | /* The many forms of operand: | |
341 | ||
342 | Rn Register direct | |
343 | @Rn Register indirect | |
344 | @(exp[:16], Rn) Register indirect with displacement | |
345 | @Rn+ | |
346 | @-Rn | |
70d6ecf3 AM |
347 | @aa:8 absolute 8 bit |
348 | @aa:16 absolute 16 bit | |
252b5132 RH |
349 | @aa absolute 16 bit |
350 | ||
351 | #xx[:size] immediate data | |
70d6ecf3 | 352 | @(exp:[8], pc) pc rel |
252b5132 RH |
353 | @@aa[:8] memory indirect |
354 | ||
355 | */ | |
356 | ||
357 | char * | |
358 | colonmod24 (op, src) | |
359 | struct h8_op *op; | |
360 | char *src; | |
361 | ||
362 | { | |
363 | int mode = 0; | |
364 | src = skip_colonthing (src, &op->exp, &mode); | |
365 | ||
366 | if (!mode) | |
367 | { | |
70d6ecf3 | 368 | /* Choose a default mode. */ |
252b5132 RH |
369 | if (op->exp.X_add_number < -32768 |
370 | || op->exp.X_add_number > 32767) | |
371 | { | |
372 | if (Hmode) | |
373 | mode = L_24; | |
374 | else | |
375 | mode = L_16; | |
376 | } | |
377 | else if (op->exp.X_add_symbol | |
378 | || op->exp.X_op_symbol) | |
379 | mode = DSYMMODE; | |
380 | else | |
381 | mode = DMODE; | |
382 | } | |
383 | op->mode |= mode; | |
384 | return src; | |
385 | ||
386 | } | |
387 | ||
252b5132 RH |
388 | static void |
389 | get_operand (ptr, op, dst, direction) | |
390 | char **ptr; | |
391 | struct h8_op *op; | |
dbbc7809 | 392 | unsigned int dst ATTRIBUTE_UNUSED; |
252b5132 RH |
393 | int direction; |
394 | { | |
395 | char *src = *ptr; | |
396 | op_type mode; | |
397 | unsigned int num; | |
398 | unsigned int len; | |
399 | ||
400 | op->mode = E; | |
401 | ||
402 | /* Gross. Gross. ldm and stm have a format not easily handled | |
403 | by get_operand. We deal with it explicitly here. */ | |
70d6ecf3 AM |
404 | if (src[0] == 'e' && src[1] == 'r' && isdigit (src[2]) |
405 | && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && isdigit (src[6])) | |
252b5132 RH |
406 | { |
407 | int low, high; | |
408 | ||
409 | low = src[2] - '0'; | |
410 | high = src[6] - '0'; | |
411 | ||
412 | if (high < low) | |
413 | as_bad (_("Invalid register list for ldm/stm\n")); | |
414 | ||
415 | if (low % 2) | |
416 | as_bad (_("Invalid register list for ldm/stm\n")); | |
417 | ||
418 | if (high - low > 3) | |
419 | as_bad (_("Invalid register list for ldm/stm\n")); | |
420 | ||
421 | if (high - low != 1 | |
422 | && low % 4) | |
423 | as_bad (_("Invalid register list for ldm/stm\n")); | |
424 | ||
425 | /* Even sicker. We encode two registers into op->reg. One | |
426 | for the low register to save, the other for the high | |
427 | register to save; we also set the high bit in op->reg | |
428 | so we know this is "very special". */ | |
429 | op->reg = 0x80000000 | (high << 8) | low; | |
430 | op->mode = REG; | |
431 | *ptr = src + 7; | |
432 | return; | |
433 | } | |
434 | ||
435 | len = parse_reg (src, &op->mode, &op->reg, direction); | |
436 | if (len) | |
437 | { | |
438 | *ptr = src + len; | |
439 | return; | |
440 | } | |
441 | ||
442 | if (*src == '@') | |
443 | { | |
444 | src++; | |
445 | if (*src == '@') | |
446 | { | |
447 | src++; | |
448 | src = parse_exp (src, &op->exp); | |
449 | ||
450 | src = skip_colonthing (src, &op->exp, &op->mode); | |
451 | ||
452 | *ptr = src; | |
453 | ||
454 | op->mode = MEMIND; | |
455 | return; | |
252b5132 RH |
456 | } |
457 | ||
252b5132 RH |
458 | if (*src == '-') |
459 | { | |
460 | src++; | |
461 | len = parse_reg (src, &mode, &num, direction); | |
462 | if (len == 0) | |
463 | { | |
70d6ecf3 | 464 | /* Oops, not a reg after all, must be ordinary exp. */ |
252b5132 | 465 | src--; |
70d6ecf3 | 466 | /* Must be a symbol. */ |
252b5132 RH |
467 | op->mode = ABS | PSIZE | direction; |
468 | *ptr = skip_colonthing (parse_exp (src, &op->exp), | |
469 | &op->exp, &op->mode); | |
470 | ||
471 | return; | |
252b5132 RH |
472 | } |
473 | ||
252b5132 RH |
474 | if ((mode & SIZE) != PSIZE) |
475 | as_bad (_("Wrong size pointer register for architecture.")); | |
476 | op->mode = RDDEC; | |
477 | op->reg = num; | |
478 | *ptr = src + len; | |
479 | return; | |
480 | } | |
481 | if (*src == '(') | |
482 | { | |
70d6ecf3 | 483 | /* Disp. */ |
252b5132 RH |
484 | src++; |
485 | ||
70d6ecf3 | 486 | /* Start off assuming a 16 bit offset. */ |
252b5132 RH |
487 | |
488 | src = parse_exp (src, &op->exp); | |
489 | ||
490 | src = colonmod24 (op, src); | |
491 | ||
492 | if (*src == ')') | |
493 | { | |
494 | src++; | |
495 | op->mode |= ABS | direction; | |
496 | *ptr = src; | |
497 | return; | |
498 | } | |
499 | ||
500 | if (*src != ',') | |
501 | { | |
502 | as_bad (_("expected @(exp, reg16)")); | |
503 | return; | |
504 | ||
505 | } | |
506 | src++; | |
507 | ||
508 | len = parse_reg (src, &mode, &op->reg, direction); | |
509 | if (len == 0 || !(mode & REG)) | |
510 | { | |
511 | as_bad (_("expected @(exp, reg16)")); | |
512 | return; | |
513 | } | |
514 | op->mode |= DISP | direction; | |
515 | dispreg = op->reg; | |
516 | src += len; | |
517 | src = skip_colonthing (src, &op->exp, &op->mode); | |
518 | ||
519 | if (*src != ')' && '(') | |
520 | { | |
521 | as_bad (_("expected @(exp, reg16)")); | |
522 | return; | |
523 | } | |
524 | *ptr = src + 1; | |
525 | ||
526 | return; | |
527 | } | |
528 | len = parse_reg (src, &mode, &num, direction); | |
529 | ||
530 | if (len) | |
531 | { | |
532 | src += len; | |
533 | if (*src == '+') | |
534 | { | |
535 | src++; | |
536 | if ((mode & SIZE) != PSIZE) | |
537 | as_bad (_("Wrong size pointer register for architecture.")); | |
538 | op->mode = RSINC; | |
539 | op->reg = num; | |
540 | *ptr = src; | |
541 | return; | |
542 | } | |
543 | if ((mode & SIZE) != PSIZE) | |
544 | as_bad (_("Wrong size pointer register for architecture.")); | |
545 | ||
546 | op->mode = direction | IND | PSIZE; | |
547 | op->reg = num; | |
548 | *ptr = src; | |
549 | ||
550 | return; | |
551 | } | |
552 | else | |
553 | { | |
554 | /* must be a symbol */ | |
555 | ||
556 | op->mode = ABS | direction; | |
557 | src = parse_exp (src, &op->exp); | |
558 | ||
559 | *ptr = colonmod24 (op, src); | |
560 | ||
561 | return; | |
562 | } | |
563 | } | |
564 | ||
252b5132 RH |
565 | if (*src == '#') |
566 | { | |
567 | src++; | |
568 | op->mode = IMM; | |
569 | src = parse_exp (src, &op->exp); | |
570 | *ptr = skip_colonthing (src, &op->exp, &op->mode); | |
571 | ||
572 | return; | |
573 | } | |
574 | else if (strncmp (src, "mach", 4) == 0 | |
575 | || strncmp (src, "macl", 4) == 0) | |
576 | { | |
577 | op->reg = src[3] == 'l'; | |
578 | op->mode = MACREG; | |
579 | *ptr = src + 4; | |
580 | return; | |
581 | } | |
582 | else | |
583 | { | |
584 | src = parse_exp (src, &op->exp); | |
585 | /* Trailing ':' size ? */ | |
586 | if (*src == ':') | |
587 | { | |
588 | if (src[1] == '1' && src[2] == '6') | |
589 | { | |
590 | op->mode = PCREL | L_16; | |
591 | src += 3; | |
592 | } | |
593 | else if (src[1] == '8') | |
594 | { | |
595 | op->mode = PCREL | L_8; | |
596 | src += 2; | |
597 | } | |
598 | else | |
599 | { | |
600 | as_bad (_("expect :8 or :16 here")); | |
601 | } | |
602 | } | |
603 | else | |
604 | { | |
605 | op->mode = PCREL | bsize; | |
606 | } | |
607 | *ptr = src; | |
608 | } | |
609 | } | |
610 | ||
70d6ecf3 | 611 | static char * |
252b5132 RH |
612 | get_operands (noperands, op_end, operand) |
613 | unsigned int noperands; | |
614 | char *op_end; | |
615 | struct h8_op *operand; | |
616 | { | |
617 | char *ptr = op_end; | |
618 | ||
619 | switch (noperands) | |
620 | { | |
621 | case 0: | |
622 | operand[0].mode = 0; | |
623 | operand[1].mode = 0; | |
624 | break; | |
625 | ||
626 | case 1: | |
627 | ptr++; | |
628 | get_operand (&ptr, operand + 0, 0, SRC); | |
629 | if (*ptr == ',') | |
630 | { | |
631 | ptr++; | |
632 | get_operand (&ptr, operand + 1, 1, DST); | |
633 | } | |
634 | else | |
635 | { | |
636 | operand[1].mode = 0; | |
637 | } | |
252b5132 | 638 | break; |
70d6ecf3 | 639 | |
252b5132 RH |
640 | case 2: |
641 | ptr++; | |
642 | get_operand (&ptr, operand + 0, 0, SRC); | |
643 | if (*ptr == ',') | |
644 | ptr++; | |
645 | get_operand (&ptr, operand + 1, 1, DST); | |
646 | break; | |
647 | ||
648 | default: | |
649 | abort (); | |
650 | } | |
651 | ||
252b5132 RH |
652 | return ptr; |
653 | } | |
654 | ||
655 | /* Passed a pointer to a list of opcodes which use different | |
656 | addressing modes, return the opcode which matches the opcodes | |
70d6ecf3 AM |
657 | provided. */ |
658 | static struct h8_opcode * | |
252b5132 RH |
659 | get_specific (opcode, operands, size) |
660 | struct h8_opcode *opcode; | |
661 | struct h8_op *operands; | |
662 | int size; | |
663 | { | |
664 | struct h8_opcode *this_try = opcode; | |
665 | int found = 0; | |
666 | ||
667 | unsigned int this_index = opcode->idx; | |
668 | ||
669 | /* There's only one ldm/stm and it's easier to just | |
670 | get out quick for them. */ | |
671 | if (strcmp (opcode->name, "stm.l") == 0 | |
672 | || strcmp (opcode->name, "ldm.l") == 0) | |
673 | return this_try; | |
674 | ||
675 | while (this_index == opcode->idx && !found) | |
676 | { | |
677 | found = 1; | |
678 | ||
679 | this_try = opcode++; | |
680 | if (this_try->noperands == 0) | |
681 | { | |
682 | int this_size; | |
683 | ||
684 | this_size = this_try->how & SN; | |
685 | if (this_size != size && (this_size != SB || size != SN)) | |
686 | found = 0; | |
687 | } | |
688 | else | |
689 | { | |
690 | unsigned int i; | |
691 | ||
692 | for (i = 0; i < this_try->noperands && found; i++) | |
693 | { | |
694 | op_type op = this_try->args.nib[i]; | |
695 | int x = operands[i].mode; | |
696 | ||
697 | if ((op & (DISP | REG)) == (DISP | REG) | |
698 | && ((x & (DISP | REG)) == (DISP | REG))) | |
699 | { | |
700 | dispreg = operands[i].reg; | |
701 | } | |
702 | else if (op & REG) | |
703 | { | |
704 | if (!(x & REG)) | |
705 | found = 0; | |
706 | ||
707 | if (x & L_P) | |
708 | x = (x & ~L_P) | (Hmode ? L_32 : L_16); | |
709 | if (op & L_P) | |
710 | op = (op & ~L_P) | (Hmode ? L_32 : L_16); | |
711 | ||
712 | opsize = op & SIZE; | |
713 | ||
70d6ecf3 | 714 | /* The size of the reg is v important. */ |
252b5132 RH |
715 | if ((op & SIZE) != (x & SIZE)) |
716 | found = 0; | |
717 | } | |
718 | else if ((op & ABSJMP) && (x & ABS)) | |
719 | { | |
720 | operands[i].mode &= ~ABS; | |
721 | operands[i].mode |= ABSJMP; | |
70d6ecf3 | 722 | /* But it may not be 24 bits long. */ |
252b5132 RH |
723 | if (!Hmode) |
724 | { | |
725 | operands[i].mode &= ~SIZE; | |
726 | operands[i].mode |= L_16; | |
727 | } | |
728 | } | |
729 | else if ((op & (KBIT | DBIT)) && (x & IMM)) | |
730 | { | |
70d6ecf3 | 731 | /* This is ok if the immediate value is sensible. */ |
252b5132 RH |
732 | } |
733 | else if (op & PCREL) | |
734 | { | |
70d6ecf3 | 735 | /* The size of the displacement is important. */ |
252b5132 RH |
736 | if ((op & SIZE) != (x & SIZE)) |
737 | found = 0; | |
738 | } | |
739 | else if ((op & (DISP | IMM | ABS)) | |
740 | && (op & (DISP | IMM | ABS)) == (x & (DISP | IMM | ABS))) | |
741 | { | |
742 | /* Promote a L_24 to L_32 if it makes us match. */ | |
743 | if ((x & L_24) && (op & L_32)) | |
744 | { | |
745 | x &= ~L_24; | |
746 | x |= L_32; | |
747 | } | |
748 | /* Promote an L8 to L_16 if it makes us match. */ | |
70d6ecf3 | 749 | if (op & ABS && op & L_8 && op & DISP) |
252b5132 RH |
750 | { |
751 | if (x & L_16) | |
70d6ecf3 | 752 | found = 1; |
252b5132 RH |
753 | } |
754 | else if ((x & SIZE) != 0 | |
755 | && ((op & SIZE) != (x & SIZE))) | |
756 | found = 0; | |
757 | } | |
758 | else if ((op & MACREG) != (x & MACREG)) | |
759 | { | |
760 | found = 0; | |
761 | } | |
762 | else if ((op & MODE) != (x & MODE)) | |
763 | { | |
764 | found = 0; | |
70d6ecf3 | 765 | } |
252b5132 RH |
766 | } |
767 | } | |
768 | } | |
769 | if (found) | |
770 | return this_try; | |
771 | else | |
772 | return 0; | |
773 | } | |
774 | ||
775 | static void | |
776 | check_operand (operand, width, string) | |
777 | struct h8_op *operand; | |
778 | unsigned int width; | |
779 | char *string; | |
780 | { | |
781 | if (operand->exp.X_add_symbol == 0 | |
782 | && operand->exp.X_op_symbol == 0) | |
783 | { | |
70d6ecf3 AM |
784 | /* No symbol involved, let's look at offset, it's dangerous if |
785 | any of the high bits are not 0 or ff's, find out by oring or | |
786 | anding with the width and seeing if the answer is 0 or all | |
787 | fs. */ | |
252b5132 | 788 | |
252b5132 RH |
789 | if ((operand->exp.X_add_number & ~width) != 0 && |
790 | (operand->exp.X_add_number | width) != (~0)) | |
791 | { | |
70d6ecf3 | 792 | if (width == 255 |
252b5132 RH |
793 | && (operand->exp.X_add_number & 0xff00) == 0xff00) |
794 | { | |
795 | /* Just ignore this one - which happens when trying to | |
796 | fit a 16 bit address truncated into an 8 bit address | |
797 | of something like bset. */ | |
798 | } | |
70d6ecf3 | 799 | else |
252b5132 RH |
800 | { |
801 | as_warn (_("operand %s0x%lx out of range."), string, | |
802 | (unsigned long) operand->exp.X_add_number); | |
803 | } | |
804 | } | |
805 | } | |
252b5132 RH |
806 | } |
807 | ||
808 | /* RELAXMODE has one of 3 values: | |
809 | ||
810 | 0 Output a "normal" reloc, no relaxing possible for this insn/reloc | |
811 | ||
812 | 1 Output a relaxable 24bit absolute mov.w address relocation | |
813 | (may relax into a 16bit absolute address). | |
814 | ||
815 | 2 Output a relaxable 16/24 absolute mov.b address relocation | |
816 | (may relax into an 8bit absolute address). */ | |
817 | ||
818 | static void | |
819 | do_a_fix_imm (offset, operand, relaxmode) | |
820 | int offset; | |
821 | struct h8_op *operand; | |
822 | int relaxmode; | |
823 | { | |
824 | int idx; | |
825 | int size; | |
826 | int where; | |
827 | ||
252b5132 RH |
828 | char *t = operand->mode & IMM ? "#" : "@"; |
829 | ||
830 | if (operand->exp.X_add_symbol == 0) | |
831 | { | |
832 | char *bytes = frag_now->fr_literal + offset; | |
833 | switch (operand->mode & SIZE) | |
834 | { | |
835 | case L_2: | |
836 | check_operand (operand, 0x3, t); | |
837 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
838 | break; | |
839 | case L_3: | |
840 | check_operand (operand, 0x7, t); | |
841 | bytes[0] |= (operand->exp.X_add_number) << 4; | |
842 | break; | |
843 | case L_8: | |
844 | check_operand (operand, 0xff, t); | |
845 | bytes[0] = operand->exp.X_add_number; | |
846 | break; | |
847 | case L_16: | |
848 | check_operand (operand, 0xffff, t); | |
849 | bytes[0] = operand->exp.X_add_number >> 8; | |
850 | bytes[1] = operand->exp.X_add_number >> 0; | |
851 | break; | |
852 | case L_24: | |
853 | check_operand (operand, 0xffffff, t); | |
854 | bytes[0] = operand->exp.X_add_number >> 16; | |
855 | bytes[1] = operand->exp.X_add_number >> 8; | |
856 | bytes[2] = operand->exp.X_add_number >> 0; | |
857 | break; | |
858 | ||
859 | case L_32: | |
70d6ecf3 | 860 | /* This should be done with bfd. */ |
252b5132 RH |
861 | bytes[0] = operand->exp.X_add_number >> 24; |
862 | bytes[1] = operand->exp.X_add_number >> 16; | |
863 | bytes[2] = operand->exp.X_add_number >> 8; | |
864 | bytes[3] = operand->exp.X_add_number >> 0; | |
4132022d AM |
865 | if (relaxmode != 0) |
866 | { | |
867 | idx = (relaxmode == 2) ? R_MOV24B1 : R_MOVL1; | |
868 | fix_new_exp (frag_now, offset, 4, &operand->exp, 0, idx); | |
869 | } | |
252b5132 RH |
870 | break; |
871 | } | |
252b5132 RH |
872 | } |
873 | else | |
874 | { | |
875 | switch (operand->mode & SIZE) | |
876 | { | |
252b5132 RH |
877 | case L_24: |
878 | case L_32: | |
879 | size = 4; | |
880 | where = (operand->mode & SIZE) == L_24 ? -1 : 0; | |
881 | if (relaxmode == 2) | |
882 | idx = R_MOV24B1; | |
883 | else if (relaxmode == 1) | |
884 | idx = R_MOVL1; | |
885 | else | |
886 | idx = R_RELLONG; | |
887 | break; | |
888 | default: | |
70d6ecf3 | 889 | as_bad (_("Can't work out size of operand.\n")); |
252b5132 RH |
890 | case L_16: |
891 | size = 2; | |
892 | where = 0; | |
893 | if (relaxmode == 2) | |
894 | idx = R_MOV16B1; | |
895 | else | |
896 | idx = R_RELWORD; | |
4132022d AM |
897 | operand->exp.X_add_number = |
898 | ((operand->exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; | |
252b5132 RH |
899 | break; |
900 | case L_8: | |
901 | size = 1; | |
902 | where = 0; | |
903 | idx = R_RELBYTE; | |
4132022d AM |
904 | operand->exp.X_add_number = |
905 | ((operand->exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 RH |
906 | } |
907 | ||
908 | fix_new_exp (frag_now, | |
909 | offset + where, | |
910 | size, | |
911 | &operand->exp, | |
912 | 0, | |
913 | idx); | |
914 | } | |
252b5132 RH |
915 | } |
916 | ||
70d6ecf3 | 917 | /* Now we know what sort of opcodes it is, let's build the bytes. */ |
252b5132 RH |
918 | static void |
919 | build_bytes (this_try, operand) | |
920 | struct h8_opcode *this_try; | |
921 | struct h8_op *operand; | |
922 | { | |
923 | unsigned int i; | |
924 | ||
925 | char *output = frag_more (this_try->length); | |
926 | op_type *nibble_ptr = this_try->data.nib; | |
927 | op_type c; | |
928 | unsigned int nibble_count = 0; | |
929 | int absat; | |
930 | int immat; | |
931 | int nib; | |
932 | int movb = 0; | |
933 | char asnibbles[30]; | |
934 | char *p = asnibbles; | |
935 | ||
936 | if (!(this_try->inbase || Hmode)) | |
937 | as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"), | |
938 | this_try->name); | |
939 | ||
940 | while (*nibble_ptr != E) | |
941 | { | |
942 | int d; | |
943 | c = *nibble_ptr++; | |
944 | ||
945 | d = (c & (DST | SRC_IN_DST)) != 0; | |
946 | ||
947 | if (c < 16) | |
948 | { | |
949 | nib = c; | |
950 | } | |
951 | else | |
952 | { | |
252b5132 RH |
953 | if (c & (REG | IND | INC | DEC)) |
954 | { | |
955 | nib = operand[d].reg; | |
956 | } | |
957 | else if ((c & DISPREG) == (DISPREG)) | |
958 | { | |
959 | nib = dispreg; | |
960 | } | |
70d6ecf3 | 961 | else if (c & ABS) |
252b5132 RH |
962 | { |
963 | operand[d].mode = c; | |
964 | absat = nibble_count / 2; | |
965 | nib = 0; | |
966 | } | |
967 | else if (c & (IMM | PCREL | ABS | ABSJMP | DISP)) | |
968 | { | |
969 | operand[d].mode = c; | |
970 | immat = nibble_count / 2; | |
971 | nib = 0; | |
972 | } | |
973 | else if (c & IGNORE) | |
974 | { | |
975 | nib = 0; | |
976 | } | |
977 | else if (c & DBIT) | |
978 | { | |
979 | switch (operand[0].exp.X_add_number) | |
980 | { | |
981 | case 1: | |
982 | nib = c; | |
983 | break; | |
984 | case 2: | |
985 | nib = 0x8 | c; | |
986 | break; | |
987 | default: | |
988 | as_bad (_("Need #1 or #2 here")); | |
989 | } | |
990 | } | |
991 | else if (c & KBIT) | |
992 | { | |
993 | switch (operand[0].exp.X_add_number) | |
994 | { | |
995 | case 1: | |
996 | nib = 0; | |
997 | break; | |
998 | case 2: | |
999 | nib = 8; | |
1000 | break; | |
1001 | case 4: | |
1002 | if (!Hmode) | |
1003 | as_warn (_("#4 not valid on H8/300.")); | |
1004 | nib = 9; | |
1005 | break; | |
1006 | ||
1007 | default: | |
1008 | as_bad (_("Need #1 or #2 here")); | |
1009 | break; | |
1010 | } | |
70d6ecf3 | 1011 | /* Stop it making a fix. */ |
252b5132 RH |
1012 | operand[0].mode = 0; |
1013 | } | |
1014 | ||
1015 | if (c & MEMRELAX) | |
1016 | { | |
1017 | operand[d].mode |= MEMRELAX; | |
1018 | } | |
1019 | ||
1020 | if (c & B31) | |
1021 | { | |
1022 | nib |= 0x8; | |
1023 | } | |
1024 | ||
1025 | if (c & MACREG) | |
1026 | { | |
f0c56b90 NC |
1027 | if (operand[0].mode == MACREG) |
1028 | /* stmac has mac[hl] as the first operand. */ | |
1029 | nib = 2 + operand[0].reg; | |
1030 | else | |
1031 | /* ldmac has mac[hl] as the second operand. */ | |
1032 | nib = 2 + operand[1].reg; | |
252b5132 RH |
1033 | } |
1034 | } | |
1035 | nibble_count++; | |
1036 | ||
1037 | *p++ = nib; | |
1038 | } | |
1039 | ||
1040 | /* Disgusting. Why, oh why didn't someone ask us for advice | |
1041 | on the assembler format. */ | |
1042 | if (strcmp (this_try->name, "stm.l") == 0 | |
1043 | || strcmp (this_try->name, "ldm.l") == 0) | |
1044 | { | |
1045 | int high, low; | |
1046 | high = (operand[this_try->name[0] == 'l' ? 1 : 0].reg >> 8) & 0xf; | |
1047 | low = operand[this_try->name[0] == 'l' ? 1 : 0].reg & 0xf; | |
1048 | ||
1049 | asnibbles[2] = high - low; | |
1050 | asnibbles[7] = (this_try->name[0] == 'l') ? high : low; | |
1051 | } | |
1052 | ||
1053 | for (i = 0; i < this_try->length; i++) | |
1054 | { | |
1055 | output[i] = (asnibbles[i * 2] << 4) | asnibbles[i * 2 + 1]; | |
1056 | } | |
1057 | ||
1058 | /* Note if this is a movb instruction -- there's a special relaxation | |
1059 | which only applies to them. */ | |
1060 | if (strcmp (this_try->name, "mov.b") == 0) | |
1061 | movb = 1; | |
1062 | ||
70d6ecf3 | 1063 | /* Output any fixes. */ |
252b5132 RH |
1064 | for (i = 0; i < 2; i++) |
1065 | { | |
1066 | int x = operand[i].mode; | |
1067 | ||
1068 | if (x & (IMM | DISP)) | |
1069 | { | |
1070 | do_a_fix_imm (output - frag_now->fr_literal + immat, | |
1071 | operand + i, x & MEMRELAX != 0); | |
1072 | } | |
1073 | else if (x & ABS) | |
1074 | { | |
1075 | do_a_fix_imm (output - frag_now->fr_literal + absat, | |
1076 | operand + i, x & MEMRELAX ? movb + 1 : 0); | |
1077 | } | |
1078 | else if (x & PCREL) | |
1079 | { | |
1080 | int size16 = x & L_16; | |
1081 | int where = size16 ? 2 : 1; | |
1082 | int size = size16 ? 2 : 1; | |
1083 | int type = size16 ? R_PCRWORD : R_PCRBYTE; | |
1084 | ||
1085 | check_operand (operand + i, size16 ? 0x7fff : 0x7f, "@"); | |
1086 | ||
1087 | if (operand[i].exp.X_add_number & 1) | |
1088 | { | |
1089 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1090 | (unsigned long) operand->exp.X_add_number); | |
1091 | } | |
1092 | ||
1093 | operand[i].exp.X_add_number -= 1; | |
4132022d AM |
1094 | operand[i].exp.X_add_number = |
1095 | ((operand[i].exp.X_add_number & 0xff) ^ 0x80) - 0x80; | |
252b5132 RH |
1096 | |
1097 | fix_new_exp (frag_now, | |
1098 | output - frag_now->fr_literal + where, | |
1099 | size, | |
1100 | &operand[i].exp, | |
1101 | 1, | |
1102 | type); | |
1103 | } | |
1104 | else if (x & MEMIND) | |
1105 | { | |
252b5132 RH |
1106 | check_operand (operand + i, 0xff, "@@"); |
1107 | fix_new_exp (frag_now, | |
1108 | output - frag_now->fr_literal + 1, | |
1109 | 1, | |
1110 | &operand[i].exp, | |
1111 | 0, | |
1112 | R_MEM_INDIRECT); | |
1113 | } | |
1114 | else if (x & ABSJMP) | |
1115 | { | |
70d6ecf3 | 1116 | /* This jmp may be a jump or a branch. */ |
252b5132 RH |
1117 | |
1118 | check_operand (operand + i, Hmode ? 0xffffff : 0xffff, "@"); | |
1119 | if (operand[i].exp.X_add_number & 1) | |
1120 | { | |
1121 | as_warn (_("branch operand has odd offset (%lx)\n"), | |
1122 | (unsigned long) operand->exp.X_add_number); | |
1123 | } | |
1124 | if (!Hmode) | |
70d6ecf3 | 1125 | operand[i].exp.X_add_number = |
4132022d | 1126 | ((operand[i].exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000; |
252b5132 RH |
1127 | fix_new_exp (frag_now, |
1128 | output - frag_now->fr_literal, | |
1129 | 4, | |
1130 | &operand[i].exp, | |
1131 | 0, | |
1132 | R_JMPL1); | |
1133 | } | |
1134 | } | |
252b5132 RH |
1135 | } |
1136 | ||
70d6ecf3 AM |
1137 | /* Try to give an intelligent error message for common and simple to |
1138 | detect errors. */ | |
252b5132 RH |
1139 | static void |
1140 | clever_message (opcode, operand) | |
1141 | struct h8_opcode *opcode; | |
1142 | struct h8_op *operand; | |
1143 | { | |
70d6ecf3 | 1144 | /* Find out if there was more than one possible opcode. */ |
252b5132 RH |
1145 | |
1146 | if ((opcode + 1)->idx != opcode->idx) | |
1147 | { | |
1148 | unsigned int argn; | |
1149 | ||
70d6ecf3 AM |
1150 | /* Only one opcode of this flavour, try to guess which operand |
1151 | didn't match. */ | |
252b5132 RH |
1152 | for (argn = 0; argn < opcode->noperands; argn++) |
1153 | { | |
1154 | switch (opcode->args.nib[argn]) | |
1155 | { | |
1156 | case RD16: | |
1157 | if (operand[argn].mode != RD16) | |
1158 | { | |
1159 | as_bad (_("destination operand must be 16 bit register")); | |
1160 | return; | |
1161 | ||
1162 | } | |
1163 | break; | |
1164 | ||
1165 | case RS8: | |
252b5132 RH |
1166 | if (operand[argn].mode != RS8) |
1167 | { | |
1168 | as_bad (_("source operand must be 8 bit register")); | |
1169 | return; | |
1170 | } | |
1171 | break; | |
1172 | ||
1173 | case ABS16DST: | |
1174 | if (operand[argn].mode != ABS16DST) | |
1175 | { | |
1176 | as_bad (_("destination operand must be 16bit absolute address")); | |
1177 | return; | |
1178 | } | |
1179 | break; | |
1180 | case RD8: | |
1181 | if (operand[argn].mode != RD8) | |
1182 | { | |
1183 | as_bad (_("destination operand must be 8 bit register")); | |
1184 | return; | |
1185 | } | |
1186 | break; | |
1187 | ||
252b5132 RH |
1188 | case ABS16SRC: |
1189 | if (operand[argn].mode != ABS16SRC) | |
1190 | { | |
1191 | as_bad (_("source operand must be 16bit absolute address")); | |
1192 | return; | |
1193 | } | |
1194 | break; | |
1195 | ||
1196 | } | |
1197 | } | |
1198 | } | |
1199 | as_bad (_("invalid operands")); | |
1200 | } | |
1201 | ||
70d6ecf3 AM |
1202 | /* This is the guts of the machine-dependent assembler. STR points to |
1203 | a machine dependent instruction. This function is supposed to emit | |
1204 | the frags/bytes it assembles. */ | |
252b5132 RH |
1205 | void |
1206 | md_assemble (str) | |
1207 | char *str; | |
1208 | { | |
1209 | char *op_start; | |
1210 | char *op_end; | |
1211 | struct h8_op operand[2]; | |
1212 | struct h8_opcode *opcode; | |
1213 | struct h8_opcode *prev_opcode; | |
1214 | ||
1215 | char *dot = 0; | |
1216 | char c; | |
1217 | int size; | |
1218 | ||
70d6ecf3 | 1219 | /* Drop leading whitespace. */ |
252b5132 RH |
1220 | while (*str == ' ') |
1221 | str++; | |
1222 | ||
70d6ecf3 | 1223 | /* Find the op code end. */ |
252b5132 RH |
1224 | for (op_start = op_end = str; |
1225 | *op_end != 0 && *op_end != ' '; | |
1226 | op_end++) | |
1227 | { | |
1228 | if (*op_end == '.') | |
1229 | { | |
1230 | dot = op_end + 1; | |
1231 | *op_end = 0; | |
1232 | op_end += 2; | |
1233 | break; | |
1234 | } | |
1235 | } | |
1236 | ||
252b5132 RH |
1237 | if (op_end == op_start) |
1238 | { | |
1239 | as_bad (_("can't find opcode ")); | |
1240 | } | |
1241 | c = *op_end; | |
1242 | ||
1243 | *op_end = 0; | |
1244 | ||
1245 | opcode = (struct h8_opcode *) hash_find (opcode_hash_control, | |
1246 | op_start); | |
1247 | ||
1248 | if (opcode == NULL) | |
1249 | { | |
1250 | as_bad (_("unknown opcode")); | |
1251 | return; | |
1252 | } | |
1253 | ||
70d6ecf3 | 1254 | /* We used to set input_line_pointer to the result of get_operands, |
252b5132 RH |
1255 | but that is wrong. Our caller assumes we don't change it. */ |
1256 | ||
1257 | (void) get_operands (opcode->noperands, op_end, operand); | |
1258 | *op_end = c; | |
1259 | prev_opcode = opcode; | |
1260 | ||
1261 | size = SN; | |
1262 | if (dot) | |
1263 | { | |
1264 | switch (*dot) | |
1265 | { | |
1266 | case 'b': | |
1267 | size = SB; | |
1268 | break; | |
1269 | ||
1270 | case 'w': | |
1271 | size = SW; | |
1272 | break; | |
1273 | ||
1274 | case 'l': | |
1275 | size = SL; | |
1276 | break; | |
1277 | } | |
1278 | } | |
1279 | opcode = get_specific (opcode, operand, size); | |
1280 | ||
1281 | if (opcode == 0) | |
1282 | { | |
70d6ecf3 | 1283 | /* Couldn't find an opcode which matched the operands. */ |
252b5132 RH |
1284 | char *where = frag_more (2); |
1285 | ||
1286 | where[0] = 0x0; | |
1287 | where[1] = 0x0; | |
1288 | clever_message (prev_opcode, operand); | |
1289 | ||
1290 | return; | |
1291 | } | |
1292 | if (opcode->size && dot) | |
1293 | { | |
1294 | if (opcode->size != *dot) | |
1295 | { | |
1296 | as_warn (_("mismatch between opcode size and operand size")); | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | build_bytes (opcode, operand); | |
252b5132 RH |
1301 | } |
1302 | ||
1303 | void | |
1304 | tc_crawl_symbol_chain (headers) | |
70d6ecf3 | 1305 | object_headers *headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1306 | { |
1307 | printf (_("call to tc_crawl_symbol_chain \n")); | |
1308 | } | |
1309 | ||
1310 | symbolS * | |
1311 | md_undefined_symbol (name) | |
dbbc7809 | 1312 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
1313 | { |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | void | |
1318 | tc_headers_hook (headers) | |
70d6ecf3 | 1319 | object_headers *headers ATTRIBUTE_UNUSED; |
252b5132 RH |
1320 | { |
1321 | printf (_("call to tc_headers_hook \n")); | |
1322 | } | |
1323 | ||
1324 | /* Various routines to kill one day */ | |
1325 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1326 | #define MAX_LITTLENUMS 6 | |
1327 | ||
70d6ecf3 AM |
1328 | /* Turn a string in input_line_pointer into a floating point constant |
1329 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
bc0d738a | 1330 | of LITTLENUMS emitted is stored in *SIZEP. An error message is |
70d6ecf3 | 1331 | returned, or NULL on OK. */ |
bc0d738a | 1332 | |
252b5132 RH |
1333 | char * |
1334 | md_atof (type, litP, sizeP) | |
1335 | char type; | |
1336 | char *litP; | |
1337 | int *sizeP; | |
1338 | { | |
1339 | int prec; | |
1340 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1341 | LITTLENUM_TYPE *wordP; | |
1342 | char *t; | |
1343 | char *atof_ieee (); | |
1344 | ||
1345 | switch (type) | |
1346 | { | |
1347 | case 'f': | |
1348 | case 'F': | |
1349 | case 's': | |
1350 | case 'S': | |
1351 | prec = 2; | |
1352 | break; | |
1353 | ||
1354 | case 'd': | |
1355 | case 'D': | |
1356 | case 'r': | |
1357 | case 'R': | |
1358 | prec = 4; | |
1359 | break; | |
1360 | ||
1361 | case 'x': | |
1362 | case 'X': | |
1363 | prec = 6; | |
1364 | break; | |
1365 | ||
1366 | case 'p': | |
1367 | case 'P': | |
1368 | prec = 6; | |
1369 | break; | |
1370 | ||
1371 | default: | |
1372 | *sizeP = 0; | |
1373 | return _("Bad call to MD_ATOF()"); | |
1374 | } | |
1375 | t = atof_ieee (input_line_pointer, type, words); | |
1376 | if (t) | |
1377 | input_line_pointer = t; | |
1378 | ||
1379 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1380 | for (wordP = words; prec--;) | |
1381 | { | |
1382 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1383 | litP += sizeof (LITTLENUM_TYPE); | |
1384 | } | |
1385 | return 0; | |
1386 | } | |
1387 | \f | |
1388 | CONST char *md_shortopts = ""; | |
1389 | struct option md_longopts[] = { | |
1390 | {NULL, no_argument, NULL, 0} | |
1391 | }; | |
70d6ecf3 AM |
1392 | |
1393 | size_t md_longopts_size = sizeof (md_longopts); | |
252b5132 RH |
1394 | |
1395 | int | |
1396 | md_parse_option (c, arg) | |
dbbc7809 JL |
1397 | int c ATTRIBUTE_UNUSED; |
1398 | char *arg ATTRIBUTE_UNUSED; | |
252b5132 RH |
1399 | { |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | void | |
1404 | md_show_usage (stream) | |
dbbc7809 | 1405 | FILE *stream ATTRIBUTE_UNUSED; |
252b5132 RH |
1406 | { |
1407 | } | |
1408 | \f | |
1409 | void | |
1410 | tc_aout_fix_to_chars () | |
1411 | { | |
1412 | printf (_("call to tc_aout_fix_to_chars \n")); | |
1413 | abort (); | |
1414 | } | |
1415 | ||
1416 | void | |
1417 | md_convert_frag (headers, seg, fragP) | |
dbbc7809 JL |
1418 | object_headers *headers ATTRIBUTE_UNUSED; |
1419 | segT seg ATTRIBUTE_UNUSED; | |
1420 | fragS *fragP ATTRIBUTE_UNUSED; | |
252b5132 RH |
1421 | { |
1422 | printf (_("call to md_convert_frag \n")); | |
1423 | abort (); | |
1424 | } | |
1425 | ||
70d6ecf3 | 1426 | valueT |
252b5132 RH |
1427 | md_section_align (seg, size) |
1428 | segT seg; | |
1429 | valueT size; | |
1430 | { | |
70d6ecf3 AM |
1431 | return ((size + (1 << section_alignment[(int) seg]) - 1) |
1432 | & (-1 << section_alignment[(int) seg])); | |
252b5132 RH |
1433 | } |
1434 | ||
1435 | void | |
1436 | md_apply_fix (fixP, val) | |
1437 | fixS *fixP; | |
1438 | long val; | |
1439 | { | |
1440 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1441 | ||
1442 | switch (fixP->fx_size) | |
1443 | { | |
1444 | case 1: | |
1445 | *buf++ = val; | |
1446 | break; | |
1447 | case 2: | |
1448 | *buf++ = (val >> 8); | |
1449 | *buf++ = val; | |
1450 | break; | |
1451 | case 4: | |
1452 | *buf++ = (val >> 24); | |
1453 | *buf++ = (val >> 16); | |
1454 | *buf++ = (val >> 8); | |
1455 | *buf++ = val; | |
1456 | break; | |
1457 | default: | |
1458 | abort (); | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | int | |
1463 | md_estimate_size_before_relax (fragP, segment_type) | |
dbbc7809 JL |
1464 | register fragS *fragP ATTRIBUTE_UNUSED; |
1465 | register segT segment_type ATTRIBUTE_UNUSED; | |
252b5132 RH |
1466 | { |
1467 | printf (_("call tomd_estimate_size_before_relax \n")); | |
1468 | abort (); | |
1469 | } | |
1470 | ||
70d6ecf3 | 1471 | /* Put number into target byte order. */ |
252b5132 RH |
1472 | void |
1473 | md_number_to_chars (ptr, use, nbytes) | |
1474 | char *ptr; | |
1475 | valueT use; | |
1476 | int nbytes; | |
1477 | { | |
1478 | number_to_chars_bigendian (ptr, use, nbytes); | |
1479 | } | |
70d6ecf3 | 1480 | |
252b5132 RH |
1481 | long |
1482 | md_pcrel_from (fixP) | |
dbbc7809 | 1483 | fixS *fixP ATTRIBUTE_UNUSED; |
252b5132 RH |
1484 | { |
1485 | abort (); | |
1486 | } | |
1487 | ||
252b5132 RH |
1488 | void |
1489 | tc_reloc_mangle (fix_ptr, intr, base) | |
1490 | fixS *fix_ptr; | |
1491 | struct internal_reloc *intr; | |
1492 | bfd_vma base; | |
1493 | ||
1494 | { | |
1495 | symbolS *symbol_ptr; | |
1496 | ||
1497 | symbol_ptr = fix_ptr->fx_addsy; | |
1498 | ||
1499 | /* If this relocation is attached to a symbol then it's ok | |
70d6ecf3 | 1500 | to output it. */ |
252b5132 RH |
1501 | if (fix_ptr->fx_r_type == TC_CONS_RELOC) |
1502 | { | |
1503 | /* cons likes to create reloc32's whatever the size of the reloc.. | |
1504 | */ | |
1505 | switch (fix_ptr->fx_size) | |
1506 | { | |
1507 | case 4: | |
1508 | intr->r_type = R_RELLONG; | |
1509 | break; | |
1510 | case 2: | |
1511 | intr->r_type = R_RELWORD; | |
1512 | break; | |
1513 | case 1: | |
1514 | intr->r_type = R_RELBYTE; | |
1515 | break; | |
1516 | default: | |
1517 | abort (); | |
252b5132 | 1518 | } |
252b5132 RH |
1519 | } |
1520 | else | |
1521 | { | |
1522 | intr->r_type = fix_ptr->fx_r_type; | |
1523 | } | |
1524 | ||
1525 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; | |
1526 | intr->r_offset = fix_ptr->fx_offset; | |
1527 | ||
1528 | if (symbol_ptr) | |
1529 | { | |
1530 | if (symbol_ptr->sy_number != -1) | |
1531 | intr->r_symndx = symbol_ptr->sy_number; | |
1532 | else | |
1533 | { | |
1534 | symbolS *segsym; | |
1535 | ||
1536 | /* This case arises when a reference is made to `.'. */ | |
1537 | segsym = seg_info (S_GET_SEGMENT (symbol_ptr))->dot; | |
1538 | if (segsym == NULL) | |
1539 | intr->r_symndx = -1; | |
1540 | else | |
1541 | { | |
1542 | intr->r_symndx = segsym->sy_number; | |
1543 | intr->r_offset += S_GET_VALUE (symbol_ptr); | |
1544 | } | |
1545 | } | |
1546 | } | |
1547 | else | |
1548 | intr->r_symndx = -1; | |
252b5132 | 1549 | } |