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252b5132 | 1 | /* tc-z8k.c -- Assemble code for the Zilog Z800n |
49309057 | 2 | Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 1999 Free Software Foundation. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
20 | ||
21 | /* | |
22 | Written By Steve Chamberlain | |
23 | sac@cygnus.com | |
24 | */ | |
25 | #define DEFINE_TABLE | |
26 | #include <stdio.h> | |
27 | ||
28 | #include "opcodes/z8k-opc.h" | |
29 | ||
30 | #include "as.h" | |
31 | #include "bfd.h" | |
32 | #include <ctype.h> | |
33 | ||
34 | const char comment_chars[] = | |
35 | {'!', 0}; | |
36 | const char line_separator_chars[] = | |
37 | {';', 0}; | |
38 | const char line_comment_chars[] = | |
39 | {'#', 0}; | |
40 | ||
41 | extern int machine; | |
42 | extern int coff_flags; | |
43 | int segmented_mode; | |
44 | const int md_reloc_size; | |
45 | ||
46 | /* This table describes all the machine specific pseudo-ops the assembler | |
47 | has to support. The fields are: | |
48 | pseudo-op name without dot | |
49 | function to call to execute this pseudo-op | |
50 | Integer arg to pass to the function | |
51 | */ | |
52 | ||
53 | void cons (); | |
54 | ||
55 | void | |
56 | s_segm () | |
57 | { | |
58 | segmented_mode = 1; | |
59 | machine = bfd_mach_z8001; | |
60 | coff_flags = F_Z8001; | |
61 | } | |
62 | ||
63 | void | |
64 | s_unseg () | |
65 | { | |
66 | segmented_mode = 0; | |
67 | machine = bfd_mach_z8002; | |
68 | coff_flags = F_Z8002; | |
69 | } | |
70 | ||
71 | static | |
72 | void | |
73 | even () | |
74 | { | |
75 | frag_align (1, 0, 0); | |
76 | record_alignment (now_seg, 1); | |
77 | } | |
78 | ||
79 | void obj_coff_section (); | |
80 | ||
81 | int | |
82 | tohex (c) | |
83 | int c; | |
84 | { | |
85 | if (isdigit (c)) | |
86 | return c - '0'; | |
87 | if (islower (c)) | |
88 | return c - 'a' + 10; | |
89 | return c - 'A' + 10; | |
90 | } | |
91 | ||
92 | void | |
93 | sval () | |
94 | { | |
95 | ||
96 | SKIP_WHITESPACE (); | |
97 | if (*input_line_pointer == '\'') | |
98 | { | |
99 | int c; | |
100 | input_line_pointer++; | |
101 | c = *input_line_pointer++; | |
102 | while (c != '\'') | |
103 | { | |
104 | if (c == '%') | |
105 | { | |
106 | c = (tohex (input_line_pointer[0]) << 4) | |
107 | | tohex (input_line_pointer[1]); | |
108 | input_line_pointer += 2; | |
109 | } | |
110 | FRAG_APPEND_1_CHAR (c); | |
111 | c = *input_line_pointer++; | |
112 | } | |
113 | demand_empty_rest_of_line (); | |
114 | } | |
115 | ||
116 | } | |
117 | const pseudo_typeS md_pseudo_table[] = | |
118 | { | |
119 | {"int", cons, 2}, | |
120 | {"data.b", cons, 1}, | |
121 | {"data.w", cons, 2}, | |
122 | {"data.l", cons, 4}, | |
123 | {"form", listing_psize, 0}, | |
124 | {"heading", listing_title, 0}, | |
125 | {"import", s_ignore, 0}, | |
126 | {"page", listing_eject, 0}, | |
127 | {"program", s_ignore, 0}, | |
128 | {"z8001", s_segm, 0}, | |
129 | {"z8002", s_unseg, 0}, | |
130 | ||
131 | ||
132 | {"segm", s_segm, 0}, | |
133 | {"unsegm", s_unseg, 0}, | |
134 | {"unseg", s_unseg, 0}, | |
135 | {"name", s_app_file, 0}, | |
136 | {"global", s_globl, 0}, | |
137 | {"wval", cons, 2}, | |
138 | {"lval", cons, 4}, | |
139 | {"bval", cons, 1}, | |
140 | {"sval", sval, 0}, | |
141 | {"rsect", obj_coff_section, 0}, | |
142 | {"sect", obj_coff_section, 0}, | |
143 | {"block", s_space, 0}, | |
144 | {"even", even, 0}, | |
145 | {0, 0, 0} | |
146 | }; | |
147 | ||
148 | const char EXP_CHARS[] = "eE"; | |
149 | ||
150 | /* Chars that mean this number is a floating point constant */ | |
151 | /* As in 0f12.456 */ | |
152 | /* or 0d1.2345e12 */ | |
153 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
154 | ||
155 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ | |
156 | ||
157 | void | |
158 | md_begin () | |
159 | { | |
160 | opcode_entry_type *opcode; | |
161 | char *prev_name = ""; | |
162 | int idx = 0; | |
163 | ||
164 | opcode_hash_control = hash_new (); | |
165 | ||
166 | for (opcode = z8k_table; opcode->name; opcode++) | |
167 | { | |
168 | /* Only enter unique codes into the table */ | |
169 | char *src = opcode->name; | |
170 | ||
171 | if (strcmp (opcode->name, prev_name)) | |
172 | { | |
173 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); | |
174 | idx++; | |
175 | } | |
176 | opcode->idx = idx; | |
177 | prev_name = opcode->name; | |
178 | } | |
179 | ||
180 | /* default to z8002 */ | |
181 | s_unseg (); | |
182 | ||
183 | /* insert the pseudo ops too */ | |
184 | for (idx = 0; md_pseudo_table[idx].poc_name; idx++) | |
185 | { | |
186 | opcode_entry_type *fake_opcode; | |
187 | fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type)); | |
188 | fake_opcode->name = md_pseudo_table[idx].poc_name, | |
189 | fake_opcode->func = (void *) (md_pseudo_table + idx); | |
190 | fake_opcode->opcode = 250; | |
191 | hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode); | |
192 | } | |
193 | ||
194 | linkrelax = 1; | |
195 | } | |
196 | ||
197 | struct z8k_exp | |
198 | { | |
199 | char *e_beg; | |
200 | char *e_end; | |
201 | expressionS e_exp; | |
202 | }; | |
203 | typedef struct z8k_op | |
204 | { | |
205 | char regsize; /* 'b','w','r','q' */ | |
206 | unsigned int reg; /* 0..15 */ | |
207 | ||
208 | int mode; | |
209 | ||
210 | unsigned int x_reg; /* any other register associated with the mode */ | |
211 | expressionS exp; /* any expression */ | |
212 | } | |
213 | ||
214 | op_type; | |
215 | ||
216 | static expressionS *da_operand; | |
217 | static expressionS *imm_operand; | |
218 | ||
219 | int reg[16]; | |
220 | int the_cc; | |
221 | int the_ctrl; | |
222 | int the_flags; | |
223 | int the_interrupt; | |
224 | ||
225 | char * | |
226 | DEFUN (whatreg, (reg, src), | |
227 | int *reg AND | |
228 | char *src) | |
229 | { | |
230 | if (isdigit (src[1])) | |
231 | { | |
232 | *reg = (src[0] - '0') * 10 + src[1] - '0'; | |
233 | return src + 2; | |
234 | } | |
235 | else | |
236 | { | |
237 | *reg = (src[0] - '0'); | |
238 | return src + 1; | |
239 | } | |
240 | } | |
241 | ||
242 | /* | |
243 | parse operands | |
244 | ||
245 | rh0-rh7, rl0-rl7 | |
246 | r0-r15 | |
247 | rr0-rr14 | |
248 | rq0--rq12 | |
249 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp | |
250 | r0l,r0h,..r7l,r7h | |
251 | @WREG | |
252 | @WREG+ | |
253 | @-WREG | |
254 | #const | |
255 | ||
256 | */ | |
257 | ||
258 | /* try and parse a reg name, returns number of chars consumed */ | |
259 | char * | |
260 | DEFUN (parse_reg, (src, mode, reg), | |
261 | char *src AND | |
262 | int *mode AND | |
263 | unsigned int *reg) | |
264 | { | |
265 | char *res = 0; | |
266 | char regno; | |
267 | ||
268 | if (src[0] == 's' && src[1] == 'p') | |
269 | { | |
270 | if (segmented_mode) | |
271 | { | |
272 | *mode = CLASS_REG_LONG; | |
273 | *reg = 14; | |
274 | } | |
275 | else | |
276 | { | |
277 | *mode = CLASS_REG_WORD; | |
278 | *reg = 15; | |
279 | } | |
280 | return src + 2; | |
281 | } | |
282 | if (src[0] == 'r') | |
283 | { | |
284 | if (src[1] == 'r') | |
285 | { | |
286 | *mode = CLASS_REG_LONG; | |
287 | res = whatreg (reg, src + 2); | |
288 | regno = *reg; | |
289 | if (regno > 14) | |
290 | as_warn (_("register rr%d, out of range."),regno); | |
291 | } | |
292 | else if (src[1] == 'h') | |
293 | { | |
294 | *mode = CLASS_REG_BYTE; | |
295 | res = whatreg (reg, src + 2); | |
296 | regno = *reg; | |
297 | if (regno > 7) | |
298 | as_warn (_("register rh%d, out of range."),regno); | |
299 | } | |
300 | else if (src[1] == 'l') | |
301 | { | |
302 | *mode = CLASS_REG_BYTE; | |
303 | res = whatreg (reg, src + 2); | |
304 | regno = *reg; | |
305 | if (regno > 7) | |
306 | as_warn (_("register rl%d, out of range."),regno); | |
307 | *reg += 8; | |
308 | } | |
309 | else if (src[1] == 'q') | |
310 | { | |
311 | *mode = CLASS_REG_QUAD; | |
312 | res = whatreg (reg, src + 2); | |
313 | regno = *reg; | |
314 | if (regno > 12) | |
315 | as_warn (_("register rq%d, out of range."),regno); | |
316 | } | |
317 | else | |
318 | { | |
319 | *mode = CLASS_REG_WORD; | |
320 | res = whatreg (reg, src + 1); | |
321 | regno = *reg; | |
322 | if (regno > 15) | |
323 | as_warn (_("register r%d, out of range."),regno); | |
324 | } | |
325 | } | |
326 | return res; | |
327 | ||
328 | } | |
329 | ||
330 | char * | |
331 | DEFUN (parse_exp, (s, op), | |
332 | char *s AND | |
333 | expressionS * op) | |
334 | { | |
335 | char *save = input_line_pointer; | |
336 | char *new; | |
337 | ||
338 | input_line_pointer = s; | |
339 | expression (op); | |
340 | if (op->X_op == O_absent) | |
341 | as_bad (_("missing operand")); | |
342 | new = input_line_pointer; | |
343 | input_line_pointer = save; | |
344 | return new; | |
345 | } | |
346 | ||
347 | /* The many forms of operand: | |
348 | ||
349 | <rb> | |
350 | <r> | |
351 | <rr> | |
352 | <rq> | |
353 | @r | |
354 | #exp | |
355 | exp | |
356 | exp(r) | |
357 | r(#exp) | |
358 | r(r) | |
359 | ||
360 | ||
361 | ||
362 | */ | |
363 | ||
364 | static | |
365 | char * | |
366 | DEFUN (checkfor, (ptr, what), | |
367 | char *ptr AND | |
368 | char what) | |
369 | { | |
370 | if (*ptr == what) | |
371 | ptr++; | |
372 | else | |
373 | { | |
374 | as_bad (_("expected %c"), what); | |
375 | } | |
376 | return ptr; | |
377 | } | |
378 | ||
379 | /* Make sure the mode supplied is the size of a word */ | |
380 | static void | |
381 | DEFUN (regword, (mode, string), | |
382 | int mode AND | |
383 | char *string) | |
384 | { | |
385 | int ok; | |
386 | ||
387 | ok = CLASS_REG_WORD; | |
388 | if (ok != mode) | |
389 | { | |
390 | as_bad (_("register is wrong size for a word %s"), string); | |
391 | } | |
392 | } | |
393 | ||
394 | /* Make sure the mode supplied is the size of an address */ | |
395 | static void | |
396 | DEFUN (regaddr, (mode, string), | |
397 | int mode AND | |
398 | char *string) | |
399 | { | |
400 | int ok; | |
401 | ||
402 | ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD; | |
403 | if (ok != mode) | |
404 | { | |
405 | as_bad (_("register is wrong size for address %s"), string); | |
406 | } | |
407 | } | |
408 | ||
409 | struct ctrl_names | |
410 | { | |
411 | int value; | |
412 | char *name; | |
413 | }; | |
414 | ||
415 | struct ctrl_names ctrl_table[] = | |
416 | { | |
417 | 0x2, "fcw", | |
418 | 0X3, "refresh", | |
419 | 0x4, "psapseg", | |
420 | 0x5, "psapoff", | |
421 | 0x5, "psap", | |
422 | 0x6, "nspseg", | |
423 | 0x7, "nspoff", | |
424 | 0x7, "nsp", | |
425 | 0, 0 | |
426 | }; | |
427 | ||
428 | static void | |
429 | DEFUN (get_ctrl_operand, (ptr, mode, dst), | |
430 | char **ptr AND | |
431 | struct z8k_op *mode AND | |
432 | unsigned int dst) | |
433 | { | |
434 | char *src = *ptr; | |
435 | int r; | |
436 | int i; | |
437 | ||
438 | while (*src == ' ') | |
439 | src++; | |
440 | ||
441 | mode->mode = CLASS_CTRL; | |
442 | for (i = 0; ctrl_table[i].name; i++) | |
443 | { | |
444 | int j; | |
445 | ||
446 | for (j = 0; ctrl_table[i].name[j]; j++) | |
447 | { | |
448 | if (ctrl_table[i].name[j] != src[j]) | |
449 | goto fail; | |
450 | } | |
451 | the_ctrl = ctrl_table[i].value; | |
452 | *ptr = src + j; | |
453 | return; | |
454 | fail:; | |
455 | } | |
456 | the_ctrl = 0; | |
457 | return; | |
458 | } | |
459 | ||
460 | struct flag_names | |
461 | { | |
462 | int value; | |
463 | char *name; | |
464 | ||
465 | }; | |
466 | ||
467 | struct flag_names flag_table[] = | |
468 | { | |
469 | 0x1, "p", | |
470 | 0x1, "v", | |
471 | 0x2, "s", | |
472 | 0x4, "z", | |
473 | 0x8, "c", | |
474 | 0x0, "+", | |
475 | 0, 0 | |
476 | }; | |
477 | ||
478 | static void | |
479 | DEFUN (get_flags_operand, (ptr, mode, dst), | |
480 | char **ptr AND | |
481 | struct z8k_op *mode AND | |
482 | unsigned int dst) | |
483 | { | |
484 | char *src = *ptr; | |
485 | int r; | |
486 | int i; | |
487 | int j; | |
488 | ||
489 | while (*src == ' ') | |
490 | src++; | |
491 | ||
492 | mode->mode = CLASS_FLAGS; | |
493 | the_flags = 0; | |
494 | for (j = 0; j <= 9; j++) | |
495 | { | |
496 | if (!src[j]) | |
497 | goto done; | |
498 | for (i = 0; flag_table[i].name; i++) | |
499 | { | |
500 | if (flag_table[i].name[0] == src[j]) | |
501 | { | |
502 | the_flags = the_flags | flag_table[i].value; | |
503 | goto match; | |
504 | } | |
505 | } | |
506 | goto done; | |
507 | match: | |
508 | ; | |
509 | } | |
510 | done: | |
511 | *ptr = src + j; | |
512 | return; | |
513 | } | |
514 | ||
515 | ||
516 | struct interrupt_names | |
517 | { | |
518 | int value; | |
519 | char *name; | |
520 | ||
521 | }; | |
522 | ||
523 | struct interrupt_names intr_table[] = | |
524 | { | |
525 | 0x1, "nvi", | |
526 | 0x2, "vi", | |
527 | 0x3, "both", | |
528 | 0x3, "all", | |
529 | 0, 0 | |
530 | }; | |
531 | ||
532 | static void | |
533 | DEFUN (get_interrupt_operand, (ptr, mode, dst), | |
534 | char **ptr AND | |
535 | struct z8k_op *mode AND | |
536 | unsigned int dst) | |
537 | { | |
538 | char *src = *ptr; | |
539 | int r; | |
540 | int i; | |
541 | ||
542 | while (*src == ' ') | |
543 | src++; | |
544 | ||
545 | mode->mode = CLASS_IMM; | |
546 | for (i = 0; intr_table[i].name; i++) | |
547 | { | |
548 | int j; | |
549 | ||
550 | for (j = 0; intr_table[i].name[j]; j++) | |
551 | { | |
552 | if (intr_table[i].name[j] != src[j]) | |
553 | goto fail; | |
554 | } | |
555 | the_interrupt = intr_table[i].value; | |
556 | *ptr = src + j; | |
557 | return; | |
558 | fail:; | |
559 | } | |
560 | the_interrupt = 0x0; | |
561 | return; | |
562 | } | |
563 | ||
564 | struct cc_names | |
565 | { | |
566 | int value; | |
567 | char *name; | |
568 | ||
569 | }; | |
570 | ||
571 | struct cc_names table[] = | |
572 | { | |
573 | 0x0, "f", | |
574 | 0x1, "lt", | |
575 | 0x2, "le", | |
576 | 0x3, "ule", | |
577 | 0x4, "ov", | |
578 | 0x4, "pe", | |
579 | 0x5, "mi", | |
580 | 0x6, "eq", | |
581 | 0x6, "z", | |
582 | 0x7, "c", | |
583 | 0x7, "ult", | |
584 | 0x8, "t", | |
585 | 0x9, "ge", | |
586 | 0xa, "gt", | |
587 | 0xb, "ugt", | |
588 | 0xc, "nov", | |
589 | 0xc, "po", | |
590 | 0xd, "pl", | |
591 | 0xe, "ne", | |
592 | 0xe, "nz", | |
593 | 0xf, "nc", | |
594 | 0xf, "uge", | |
595 | 0, 0 | |
596 | }; | |
597 | ||
598 | static void | |
599 | DEFUN (get_cc_operand, (ptr, mode, dst), | |
600 | char **ptr AND | |
601 | struct z8k_op *mode AND | |
602 | unsigned int dst) | |
603 | { | |
604 | char *src = *ptr; | |
605 | int r; | |
606 | int i; | |
607 | ||
608 | while (*src == ' ') | |
609 | src++; | |
610 | ||
611 | mode->mode = CLASS_CC; | |
612 | for (i = 0; table[i].name; i++) | |
613 | { | |
614 | int j; | |
615 | ||
616 | for (j = 0; table[i].name[j]; j++) | |
617 | { | |
618 | if (table[i].name[j] != src[j]) | |
619 | goto fail; | |
620 | } | |
621 | the_cc = table[i].value; | |
622 | *ptr = src + j; | |
623 | return; | |
624 | fail:; | |
625 | } | |
626 | the_cc = 0x8; | |
627 | } | |
628 | ||
629 | static void | |
630 | get_operand (ptr, mode, dst) | |
631 | char **ptr; | |
632 | struct z8k_op *mode; | |
633 | unsigned int dst; | |
634 | { | |
635 | char *src = *ptr; | |
636 | char *end; | |
637 | unsigned int num; | |
638 | unsigned int len; | |
639 | unsigned int size; | |
640 | ||
641 | mode->mode = 0; | |
642 | ||
643 | while (*src == ' ') | |
644 | src++; | |
645 | if (*src == '#') | |
646 | { | |
647 | mode->mode = CLASS_IMM; | |
648 | imm_operand = &(mode->exp); | |
649 | src = parse_exp (src + 1, &(mode->exp)); | |
650 | } | |
651 | else if (*src == '@') | |
652 | { | |
653 | int d; | |
654 | ||
655 | mode->mode = CLASS_IR; | |
656 | src = parse_reg (src + 1, &d, &mode->reg); | |
657 | } | |
658 | else | |
659 | { | |
660 | int regn; | |
661 | ||
662 | end = parse_reg (src, &mode->mode, ®n); | |
663 | ||
664 | if (end) | |
665 | { | |
666 | int nw, nr; | |
667 | ||
668 | src = end; | |
669 | if (*src == '(') | |
670 | { | |
671 | src++; | |
672 | end = parse_reg (src, &nw, &nr); | |
673 | if (end) | |
674 | { | |
675 | /* Got Ra(Rb) */ | |
676 | src = end; | |
677 | ||
678 | if (*src != ')') | |
679 | { | |
680 | as_bad (_("Missing ) in ra(rb)")); | |
681 | } | |
682 | else | |
683 | { | |
684 | src++; | |
685 | } | |
686 | ||
687 | regaddr (mode->mode, "ra(rb) ra"); | |
688 | /* regword (mode->mode, "ra(rb) rb");*/ | |
689 | mode->mode = CLASS_BX; | |
690 | mode->reg = regn; | |
691 | mode->x_reg = nr; | |
692 | reg[ARG_RX] = nr; | |
693 | } | |
694 | else | |
695 | { | |
696 | /* Got Ra(disp) */ | |
697 | if (*src == '#') | |
698 | src++; | |
699 | src = parse_exp (src, &(mode->exp)); | |
700 | src = checkfor (src, ')'); | |
701 | mode->mode = CLASS_BA; | |
702 | mode->reg = regn; | |
703 | mode->x_reg = 0; | |
704 | imm_operand = &(mode->exp); | |
705 | } | |
706 | } | |
707 | else | |
708 | { | |
709 | mode->reg = regn; | |
710 | mode->x_reg = 0; | |
711 | } | |
712 | } | |
713 | else | |
714 | { | |
715 | /* No initial reg */ | |
716 | src = parse_exp (src, &(mode->exp)); | |
717 | if (*src == '(') | |
718 | { | |
719 | src++; | |
720 | end = parse_reg (src, &(mode->mode), ®n); | |
721 | regword (mode->mode, "addr(Ra) ra"); | |
722 | mode->mode = CLASS_X; | |
723 | mode->reg = regn; | |
724 | mode->x_reg = 0; | |
725 | da_operand = &(mode->exp); | |
726 | src = checkfor (end, ')'); | |
727 | } | |
728 | else | |
729 | { | |
730 | /* Just an address */ | |
731 | mode->mode = CLASS_DA; | |
732 | mode->reg = 0; | |
733 | mode->x_reg = 0; | |
734 | da_operand = &(mode->exp); | |
735 | } | |
736 | } | |
737 | } | |
738 | *ptr = src; | |
739 | } | |
740 | ||
741 | static | |
742 | char * | |
743 | get_operands (opcode, op_end, operand) | |
744 | opcode_entry_type *opcode; | |
745 | char *op_end; | |
746 | op_type *operand; | |
747 | { | |
748 | char *ptr = op_end; | |
749 | char *savptr; | |
750 | switch (opcode->noperands) | |
751 | { | |
752 | case 0: | |
753 | operand[0].mode = 0; | |
754 | operand[1].mode = 0; | |
755 | break; | |
756 | ||
757 | case 1: | |
758 | ptr++; | |
759 | if (opcode->arg_info[0] == CLASS_CC) | |
760 | { | |
761 | get_cc_operand (&ptr, operand + 0, 0); | |
762 | } | |
763 | else if (opcode->arg_info[0] == CLASS_FLAGS) | |
764 | { | |
765 | get_flags_operand (&ptr, operand + 0, 0); | |
766 | } | |
767 | else if (opcode->arg_info[0] == (CLASS_IMM +(ARG_IMM2))) | |
768 | { | |
769 | get_interrupt_operand (&ptr, operand + 0, 0); | |
770 | } | |
771 | else | |
772 | { | |
773 | get_operand (&ptr, operand + 0, 0); | |
774 | } | |
775 | operand[1].mode = 0; | |
776 | break; | |
777 | ||
778 | case 2: | |
779 | ptr++; | |
780 | savptr = ptr; | |
781 | if (opcode->arg_info[0] == CLASS_CC) | |
782 | { | |
783 | get_cc_operand (&ptr, operand + 0, 0); | |
784 | } | |
785 | else if (opcode->arg_info[0] == CLASS_CTRL) | |
786 | { | |
787 | get_ctrl_operand (&ptr, operand + 0, 0); | |
788 | if (the_ctrl == 0) | |
789 | { | |
790 | ptr = savptr; | |
791 | get_operand (&ptr, operand + 0, 0); | |
792 | if (ptr == 0) | |
793 | return; | |
794 | if (*ptr == ',') | |
795 | ptr++; | |
796 | get_ctrl_operand (&ptr, operand + 1, 1); | |
797 | return ptr; | |
798 | } | |
799 | } | |
800 | else | |
801 | { | |
802 | get_operand (&ptr, operand + 0, 0); | |
803 | } | |
804 | if (ptr == 0) | |
805 | return; | |
806 | if (*ptr == ',') | |
807 | ptr++; | |
808 | get_operand (&ptr, operand + 1, 1); | |
809 | break; | |
810 | ||
811 | case 3: | |
812 | ptr++; | |
813 | get_operand (&ptr, operand + 0, 0); | |
814 | if (*ptr == ',') | |
815 | ptr++; | |
816 | get_operand (&ptr, operand + 1, 1); | |
817 | if (*ptr == ',') | |
818 | ptr++; | |
819 | get_operand (&ptr, operand + 2, 2); | |
820 | break; | |
821 | ||
822 | case 4: | |
823 | ptr++; | |
824 | get_operand (&ptr, operand + 0, 0); | |
825 | if (*ptr == ',') | |
826 | ptr++; | |
827 | get_operand (&ptr, operand + 1, 1); | |
828 | if (*ptr == ',') | |
829 | ptr++; | |
830 | get_operand (&ptr, operand + 2, 2); | |
831 | if (*ptr == ',') | |
832 | ptr++; | |
833 | get_cc_operand (&ptr, operand + 3, 3); | |
834 | break; | |
835 | default: | |
836 | abort (); | |
837 | } | |
838 | ||
839 | return ptr; | |
840 | } | |
841 | ||
842 | /* Passed a pointer to a list of opcodes which use different | |
843 | addressing modes, return the opcode which matches the opcodes | |
844 | provided | |
845 | */ | |
846 | ||
847 | static | |
848 | opcode_entry_type * | |
849 | DEFUN (get_specific, (opcode, operands), | |
850 | opcode_entry_type * opcode AND | |
851 | op_type * operands) | |
852 | ||
853 | { | |
854 | opcode_entry_type *this_try = opcode; | |
855 | int found = 0; | |
856 | unsigned int noperands = opcode->noperands; | |
857 | ||
858 | unsigned int dispreg; | |
859 | unsigned int this_index = opcode->idx; | |
860 | ||
861 | while (this_index == opcode->idx && !found) | |
862 | { | |
863 | unsigned int i; | |
864 | ||
865 | this_try = opcode++; | |
866 | for (i = 0; i < noperands; i++) | |
867 | { | |
868 | int mode = operands[i].mode; | |
869 | ||
870 | if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) | |
871 | { | |
872 | /* it could be an pc rel operand, if this is a da mode and | |
873 | we like disps, then insert it */ | |
874 | ||
875 | if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP) | |
876 | { | |
877 | /* This is the case */ | |
878 | operands[i].mode = CLASS_DISP; | |
879 | } | |
880 | else if (mode == CLASS_BA && this_try->arg_info[i]) | |
881 | { | |
882 | /* Can't think of a way to turn what we've been given into | |
883 | something that's ok */ | |
884 | goto fail; | |
885 | } | |
886 | else if (this_try->arg_info[i] & CLASS_PR) | |
887 | { | |
888 | if (mode == CLASS_REG_LONG && segmented_mode) | |
889 | { | |
890 | /* ok */ | |
891 | } | |
892 | else if (mode == CLASS_REG_WORD && !segmented_mode) | |
893 | { | |
894 | /* ok */ | |
895 | } | |
896 | else | |
897 | goto fail; | |
898 | } | |
899 | else | |
900 | goto fail; | |
901 | } | |
902 | switch (mode & CLASS_MASK) | |
903 | { | |
904 | default: | |
905 | break; | |
906 | case CLASS_X: | |
907 | case CLASS_IR: | |
908 | case CLASS_BA: | |
909 | case CLASS_BX: | |
910 | case CLASS_DISP: | |
911 | case CLASS_REG: | |
912 | case CLASS_REG_WORD: | |
913 | case CLASS_REG_BYTE: | |
914 | case CLASS_REG_QUAD: | |
915 | case CLASS_REG_LONG: | |
916 | case CLASS_REGN0: | |
917 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; | |
918 | break; | |
919 | } | |
920 | } | |
921 | ||
922 | found = 1; | |
923 | fail:; | |
924 | } | |
925 | if (found) | |
926 | return this_try; | |
927 | else | |
928 | return 0; | |
929 | } | |
930 | ||
931 | static void | |
932 | DEFUN (check_operand, (operand, width, string), | |
933 | struct z8k_op *operand AND | |
934 | unsigned int width AND | |
935 | char *string) | |
936 | { | |
937 | if (operand->exp.X_add_symbol == 0 | |
938 | && operand->exp.X_op_symbol == 0) | |
939 | { | |
940 | ||
941 | /* No symbol involved, let's look at offset, it's dangerous if any of | |
942 | the high bits are not 0 or ff's, find out by oring or anding with | |
943 | the width and seeing if the answer is 0 or all fs*/ | |
944 | if ((operand->exp.X_add_number & ~width) != 0 && | |
945 | (operand->exp.X_add_number | width) != (~0)) | |
946 | { | |
947 | as_warn (_("operand %s0x%x out of range."), string, operand->exp.X_add_number); | |
948 | } | |
949 | } | |
950 | ||
951 | } | |
952 | ||
953 | static char buffer[20]; | |
954 | ||
955 | static void | |
956 | DEFUN (newfix, (ptr, type, operand), | |
957 | int ptr AND | |
958 | int type AND | |
959 | expressionS * operand) | |
960 | { | |
961 | if (operand->X_add_symbol | |
962 | || operand->X_op_symbol | |
963 | || operand->X_add_number) | |
964 | { | |
965 | fix_new_exp (frag_now, | |
966 | ptr, | |
967 | 1, | |
968 | operand, | |
969 | 0, | |
970 | type); | |
971 | } | |
972 | } | |
973 | ||
974 | static char * | |
975 | DEFUN (apply_fix, (ptr, type, operand, size), | |
976 | char *ptr AND | |
977 | int type AND | |
978 | expressionS * operand AND | |
979 | int size) | |
980 | { | |
981 | int n = operand->X_add_number; | |
982 | ||
983 | operand->X_add_number = n; | |
984 | newfix ((ptr - buffer) / 2, type, operand); | |
985 | #if 1 | |
986 | switch (size) | |
987 | { | |
988 | case 8: /* 8 nibbles == 32 bits */ | |
989 | *ptr++ = n >> 28; | |
990 | *ptr++ = n >> 24; | |
991 | *ptr++ = n >> 20; | |
992 | *ptr++ = n >> 16; | |
993 | case 4: /* 4 niblles == 16 bits */ | |
994 | *ptr++ = n >> 12; | |
995 | *ptr++ = n >> 8; | |
996 | case 2: | |
997 | *ptr++ = n >> 4; | |
998 | case 1: | |
999 | *ptr++ = n >> 0; | |
1000 | break; | |
1001 | } | |
1002 | #endif | |
1003 | return ptr; | |
1004 | ||
1005 | } | |
1006 | ||
1007 | /* Now we know what sort of opcodes it is, lets build the bytes - | |
1008 | */ | |
1009 | #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y; | |
1010 | static void | |
1011 | build_bytes (this_try, operand) | |
1012 | opcode_entry_type * this_try; | |
1013 | struct z8k_op *operand; | |
1014 | { | |
1015 | unsigned int i; | |
1016 | ||
1017 | int length; | |
1018 | char *output; | |
1019 | char *output_ptr = buffer; | |
1020 | char part; | |
1021 | int c; | |
1022 | char high; | |
1023 | int nib; | |
1024 | int nibble; | |
1025 | unsigned int *class_ptr; | |
1026 | ||
1027 | frag_wane (frag_now); | |
1028 | frag_new (0); | |
1029 | ||
1030 | memset (buffer, 20, 0); | |
1031 | class_ptr = this_try->byte_info; | |
1032 | top:; | |
1033 | ||
1034 | for (nibble = 0; c = *class_ptr++; nibble++) | |
1035 | { | |
1036 | ||
1037 | switch (c & CLASS_MASK) | |
1038 | { | |
1039 | default: | |
1040 | ||
1041 | abort (); | |
1042 | case CLASS_ADDRESS: | |
1043 | /* Direct address, we don't cope with the SS mode right now */ | |
1044 | if (segmented_mode) | |
1045 | { | |
1046 | da_operand->X_add_number |= 0x80000000; | |
1047 | output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8); | |
1048 | } | |
1049 | else | |
1050 | { | |
1051 | output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); | |
1052 | } | |
1053 | da_operand = 0; | |
1054 | break; | |
1055 | case CLASS_DISP8: | |
1056 | /* pc rel 8 bit */ | |
1057 | output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2); | |
1058 | da_operand = 0; | |
1059 | break; | |
1060 | ||
1061 | case CLASS_0DISP7: | |
1062 | /* pc rel 7 bit */ | |
1063 | *output_ptr = 0; | |
1064 | output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); | |
1065 | da_operand = 0; | |
1066 | break; | |
1067 | ||
1068 | case CLASS_1DISP7: | |
1069 | /* pc rel 7 bit */ | |
1070 | *output_ptr = 0x80; | |
1071 | output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); | |
1072 | output_ptr[-2] = 0x8; | |
1073 | da_operand = 0; | |
1074 | break; | |
1075 | ||
1076 | case CLASS_BIT_1OR2: | |
1077 | *output_ptr = c & 0xf; | |
1078 | if (imm_operand) | |
1079 | { | |
1080 | if (imm_operand->X_add_number == 2) | |
1081 | { | |
1082 | *output_ptr |= 2; | |
1083 | } | |
1084 | else if (imm_operand->X_add_number != 1) | |
1085 | { | |
1086 | as_bad (_("immediate must be 1 or 2")); | |
1087 | } | |
1088 | } | |
1089 | else | |
1090 | { | |
1091 | as_bad (_("immediate 1 or 2 expected")); | |
1092 | } | |
1093 | output_ptr++; | |
1094 | break; | |
1095 | case CLASS_CC: | |
1096 | *output_ptr++ = the_cc; | |
1097 | break; | |
1098 | case CLASS_0CCC: | |
1099 | *output_ptr++ = the_ctrl; | |
1100 | break; | |
1101 | case CLASS_1CCC: | |
1102 | *output_ptr++ = the_ctrl | 0x8; | |
1103 | break; | |
1104 | case CLASS_00II: | |
1105 | *output_ptr++ = (~the_interrupt & 0x3); | |
1106 | break; | |
1107 | case CLASS_01II: | |
1108 | *output_ptr++ = (~the_interrupt & 0x3) | 0x4; | |
1109 | break; | |
1110 | case CLASS_FLAGS: | |
1111 | *output_ptr++ = the_flags; | |
1112 | break; | |
1113 | case CLASS_BIT: | |
1114 | *output_ptr++ = c & 0xf; | |
1115 | break; | |
1116 | case CLASS_REGN0: | |
1117 | if (reg[c & 0xf] == 0) | |
1118 | { | |
1119 | as_bad (_("can't use R0 here")); | |
1120 | } | |
1121 | case CLASS_REG: | |
1122 | case CLASS_REG_BYTE: | |
1123 | case CLASS_REG_WORD: | |
1124 | case CLASS_REG_LONG: | |
1125 | case CLASS_REG_QUAD: | |
1126 | /* Insert bit mattern of | |
1127 | right reg */ | |
1128 | *output_ptr++ = reg[c & 0xf]; | |
1129 | break; | |
1130 | case CLASS_DISP: | |
1131 | output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); | |
1132 | da_operand = 0; | |
1133 | break; | |
1134 | ||
1135 | case CLASS_IMM: | |
1136 | { | |
1137 | nib = 0; | |
1138 | switch (c & ARG_MASK) | |
1139 | { | |
1140 | case ARG_IMM4: | |
1141 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); | |
1142 | break; | |
1143 | case ARG_IMM4M1: | |
1144 | imm_operand->X_add_number--; | |
1145 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); | |
1146 | break; | |
1147 | case ARG_IMMNMINUS1: | |
1148 | imm_operand->X_add_number--; | |
1149 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); | |
1150 | break; | |
1151 | case ARG_NIM8: | |
1152 | imm_operand->X_add_number = -imm_operand->X_add_number; | |
1153 | case ARG_IMM8: | |
1154 | output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2); | |
1155 | break; | |
1156 | case ARG_IMM16: | |
1157 | output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4); | |
1158 | break; | |
1159 | ||
1160 | case ARG_IMM32: | |
1161 | output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8); | |
1162 | break; | |
1163 | ||
1164 | default: | |
1165 | abort (); | |
1166 | } | |
1167 | } | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | /* Copy from the nibble buffer into the frag */ | |
1172 | ||
1173 | { | |
1174 | int length = (output_ptr - buffer) / 2; | |
1175 | char *src = buffer; | |
1176 | char *fragp = frag_more (length); | |
1177 | ||
1178 | while (src < output_ptr) | |
1179 | { | |
1180 | *fragp = (src[0] << 4) | src[1]; | |
1181 | src += 2; | |
1182 | fragp++; | |
1183 | } | |
1184 | ||
1185 | } | |
1186 | ||
1187 | } | |
1188 | ||
1189 | /* This is the guts of the machine-dependent assembler. STR points to a | |
1190 | machine dependent instruction. This funciton is supposed to emit | |
1191 | the frags/bytes it assembles to. | |
1192 | */ | |
1193 | ||
1194 | void | |
1195 | DEFUN (md_assemble, (str), | |
1196 | char *str) | |
1197 | { | |
1198 | char *op_start; | |
1199 | char *op_end; | |
1200 | unsigned int i; | |
1201 | struct z8k_op operand[3]; | |
1202 | opcode_entry_type *opcode; | |
1203 | opcode_entry_type *prev_opcode; | |
1204 | ||
1205 | char *dot = 0; | |
1206 | char c; | |
1207 | ||
1208 | /* Drop leading whitespace */ | |
1209 | while (*str == ' ') | |
1210 | str++; | |
1211 | ||
1212 | /* find the op code end */ | |
1213 | for (op_start = op_end = str; | |
1214 | *op_end != 0 && *op_end != ' '; | |
1215 | op_end++) | |
1216 | { | |
1217 | } | |
1218 | ||
1219 | ; | |
1220 | ||
1221 | if (op_end == op_start) | |
1222 | { | |
1223 | as_bad (_("can't find opcode ")); | |
1224 | } | |
1225 | c = *op_end; | |
1226 | ||
1227 | *op_end = 0; | |
1228 | ||
1229 | opcode = (opcode_entry_type *) hash_find (opcode_hash_control, | |
1230 | op_start); | |
1231 | ||
1232 | ||
1233 | if (opcode == NULL) | |
1234 | { | |
1235 | as_bad (_("unknown opcode")); | |
1236 | return; | |
1237 | } | |
1238 | ||
1239 | if (opcode->opcode == 250) | |
1240 | { | |
1241 | /* was really a pseudo op */ | |
1242 | ||
1243 | pseudo_typeS *p; | |
1244 | char oc; | |
1245 | ||
1246 | char *old = input_line_pointer; | |
1247 | *op_end = c; | |
1248 | ||
1249 | ||
1250 | input_line_pointer = op_end; | |
1251 | ||
1252 | oc = *old; | |
1253 | *old = '\n'; | |
1254 | while (*input_line_pointer == ' ') | |
1255 | input_line_pointer++; | |
1256 | p = (pseudo_typeS *) (opcode->func); | |
1257 | ||
1258 | (p->poc_handler) (p->poc_val); | |
1259 | input_line_pointer = old; | |
1260 | *old = oc; | |
1261 | } | |
1262 | else | |
1263 | { | |
1264 | input_line_pointer = get_operands (opcode, op_end, | |
1265 | operand); | |
1266 | prev_opcode = opcode; | |
1267 | ||
1268 | opcode = get_specific (opcode, operand); | |
1269 | ||
1270 | if (opcode == 0) | |
1271 | { | |
1272 | /* Couldn't find an opcode which matched the operands */ | |
1273 | char *where = frag_more (2); | |
1274 | ||
1275 | where[0] = 0x0; | |
1276 | where[1] = 0x0; | |
1277 | ||
1278 | as_bad (_("Can't find opcode to match operands")); | |
1279 | return; | |
1280 | } | |
1281 | ||
1282 | build_bytes (opcode, operand); | |
1283 | } | |
1284 | } | |
1285 | ||
1286 | void | |
1287 | DEFUN (tc_crawl_symbol_chain, (headers), | |
1288 | object_headers * headers) | |
1289 | { | |
1290 | printf (_("call to tc_crawl_symbol_chain \n")); | |
1291 | } | |
1292 | ||
1293 | symbolS * | |
1294 | DEFUN (md_undefined_symbol, (name), | |
1295 | char *name) | |
1296 | { | |
1297 | return 0; | |
1298 | } | |
1299 | ||
1300 | void | |
1301 | DEFUN (tc_headers_hook, (headers), | |
1302 | object_headers * headers) | |
1303 | { | |
1304 | printf (_("call to tc_headers_hook \n")); | |
1305 | } | |
1306 | ||
1307 | /* Various routines to kill one day */ | |
1308 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1309 | #define MAX_LITTLENUMS 6 | |
1310 | ||
1311 | /* Turn a string in input_line_pointer into a floating point constant of type | |
1312 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1313 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. | |
1314 | */ | |
1315 | char * | |
1316 | md_atof (type, litP, sizeP) | |
1317 | char type; | |
1318 | char *litP; | |
1319 | int *sizeP; | |
1320 | { | |
1321 | int prec; | |
1322 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1323 | LITTLENUM_TYPE *wordP; | |
1324 | char *t; | |
1325 | char *atof_ieee (); | |
1326 | ||
1327 | switch (type) | |
1328 | { | |
1329 | case 'f': | |
1330 | case 'F': | |
1331 | case 's': | |
1332 | case 'S': | |
1333 | prec = 2; | |
1334 | break; | |
1335 | ||
1336 | case 'd': | |
1337 | case 'D': | |
1338 | case 'r': | |
1339 | case 'R': | |
1340 | prec = 4; | |
1341 | break; | |
1342 | ||
1343 | case 'x': | |
1344 | case 'X': | |
1345 | prec = 6; | |
1346 | break; | |
1347 | ||
1348 | case 'p': | |
1349 | case 'P': | |
1350 | prec = 6; | |
1351 | break; | |
1352 | ||
1353 | default: | |
1354 | *sizeP = 0; | |
1355 | return _("Bad call to MD_ATOF()"); | |
1356 | } | |
1357 | t = atof_ieee (input_line_pointer, type, words); | |
1358 | if (t) | |
1359 | input_line_pointer = t; | |
1360 | ||
1361 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1362 | for (wordP = words; prec--;) | |
1363 | { | |
1364 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1365 | litP += sizeof (LITTLENUM_TYPE); | |
1366 | } | |
1367 | return 0; | |
1368 | } | |
1369 | \f | |
1370 | CONST char *md_shortopts = "z:"; | |
1371 | struct option md_longopts[] = { | |
1372 | {NULL, no_argument, NULL, 0} | |
1373 | }; | |
1374 | size_t md_longopts_size = sizeof(md_longopts); | |
1375 | ||
1376 | int | |
1377 | md_parse_option (c, arg) | |
1378 | int c; | |
1379 | char *arg; | |
1380 | { | |
1381 | switch (c) | |
1382 | { | |
1383 | case 'z': | |
1384 | if (!strcmp (arg, "8001")) | |
1385 | s_segm (); | |
1386 | else if (!strcmp (arg, "8002")) | |
1387 | s_unseg (); | |
1388 | else | |
1389 | { | |
1390 | as_bad (_("invalid architecture -z%s"), arg); | |
1391 | return 0; | |
1392 | } | |
1393 | break; | |
1394 | ||
1395 | default: | |
1396 | return 0; | |
1397 | } | |
1398 | ||
1399 | return 1; | |
1400 | } | |
1401 | ||
1402 | void | |
1403 | md_show_usage (stream) | |
1404 | FILE *stream; | |
1405 | { | |
1406 | fprintf(stream, _("\ | |
1407 | Z8K options:\n\ | |
1408 | -z8001 generate segmented code\n\ | |
1409 | -z8002 generate unsegmented code\n")); | |
1410 | } | |
1411 | \f | |
1412 | void | |
1413 | tc_aout_fix_to_chars () | |
1414 | { | |
1415 | printf (_("call to tc_aout_fix_to_chars \n")); | |
1416 | abort (); | |
1417 | } | |
1418 | ||
1419 | void | |
1420 | md_convert_frag (headers, seg, fragP) | |
1421 | object_headers *headers; | |
1422 | segT seg; | |
1423 | fragS *fragP; | |
1424 | { | |
1425 | printf (_("call to md_convert_frag \n")); | |
1426 | abort (); | |
1427 | } | |
1428 | ||
1429 | valueT | |
1430 | DEFUN (md_section_align, (seg, size), | |
1431 | segT seg AND | |
1432 | valueT size) | |
1433 | { | |
1434 | return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg])); | |
1435 | ||
1436 | } | |
1437 | ||
1438 | void | |
1439 | md_apply_fix (fixP, val) | |
1440 | fixS *fixP; | |
1441 | long val; | |
1442 | { | |
1443 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1444 | ||
1445 | switch (fixP->fx_r_type) | |
1446 | { | |
1447 | case R_IMM4L: | |
1448 | buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf); | |
1449 | break; | |
1450 | ||
1451 | case R_JR: | |
1452 | ||
1453 | *buf++ = val; | |
1454 | /* if (val != 0) abort();*/ | |
1455 | break; | |
1456 | ||
1457 | case R_DISP7: | |
1458 | ||
1459 | *buf++ += val; | |
1460 | /* if (val != 0) abort();*/ | |
1461 | break; | |
1462 | ||
1463 | case R_IMM8: | |
1464 | buf[0] += val; | |
1465 | break; | |
1466 | case R_IMM16: | |
1467 | *buf++ = (val >> 8); | |
1468 | *buf++ = val; | |
1469 | break; | |
1470 | case R_IMM32: | |
1471 | *buf++ = (val >> 24); | |
1472 | *buf++ = (val >> 16); | |
1473 | *buf++ = (val >> 8); | |
1474 | *buf++ = val; | |
1475 | break; | |
1476 | #if 0 | |
1477 | case R_DA | R_SEG: | |
1478 | *buf++ = (val >> 16); | |
1479 | *buf++ = 0x00; | |
1480 | *buf++ = (val >> 8); | |
1481 | *buf++ = val; | |
1482 | break; | |
1483 | #endif | |
1484 | ||
1485 | case 0: | |
1486 | md_number_to_chars (buf, val, fixP->fx_size); | |
1487 | break; | |
1488 | ||
1489 | default: | |
1490 | abort (); | |
1491 | ||
1492 | } | |
1493 | } | |
1494 | ||
1495 | int | |
1496 | md_estimate_size_before_relax (fragP, segment_type) | |
1497 | register fragS *fragP; | |
1498 | register segT segment_type; | |
1499 | { | |
1500 | printf (_("call tomd_estimate_size_before_relax \n")); | |
1501 | abort (); | |
1502 | } | |
1503 | ||
1504 | /* Put number into target byte order */ | |
1505 | ||
1506 | void | |
1507 | DEFUN (md_number_to_chars, (ptr, use, nbytes), | |
1508 | char *ptr AND | |
1509 | valueT use AND | |
1510 | int nbytes) | |
1511 | { | |
1512 | number_to_chars_bigendian (ptr, use, nbytes); | |
1513 | } | |
1514 | long | |
1515 | md_pcrel_from (fixP) | |
1516 | fixS *fixP; | |
1517 | { | |
1518 | abort (); | |
1519 | } | |
1520 | ||
1521 | void | |
1522 | tc_coff_symbol_emit_hook (s) | |
49309057 | 1523 | symbolS *s; |
252b5132 RH |
1524 | { |
1525 | } | |
1526 | ||
1527 | void | |
1528 | tc_reloc_mangle (fix_ptr, intr, base) | |
1529 | fixS *fix_ptr; | |
1530 | struct internal_reloc *intr; | |
1531 | bfd_vma base; | |
1532 | ||
1533 | { | |
1534 | symbolS *symbol_ptr; | |
1535 | ||
1536 | if (fix_ptr->fx_addsy && | |
1537 | fix_ptr->fx_subsy) | |
1538 | { | |
1539 | symbolS *add = fix_ptr->fx_addsy; | |
1540 | symbolS *sub = fix_ptr->fx_subsy; | |
1541 | if (S_GET_SEGMENT(add) != S_GET_SEGMENT(sub)) | |
1542 | { | |
1543 | as_bad(_("Can't subtract symbols in different sections %s %s"), | |
1544 | S_GET_NAME(add), S_GET_NAME(sub)); | |
1545 | } | |
1546 | else { | |
1547 | int diff = S_GET_VALUE(add) - S_GET_VALUE(sub); | |
1548 | fix_ptr->fx_addsy = 0; | |
1549 | fix_ptr->fx_subsy = 0; | |
1550 | fix_ptr->fx_offset += diff; | |
1551 | } | |
1552 | } | |
1553 | symbol_ptr = fix_ptr->fx_addsy; | |
1554 | ||
1555 | /* If this relocation is attached to a symbol then it's ok | |
1556 | to output it */ | |
1557 | if (fix_ptr->fx_r_type == 0) | |
1558 | { | |
1559 | /* cons likes to create reloc32's whatever the size of the reloc.. */ | |
1560 | switch (fix_ptr->fx_size) | |
1561 | { | |
1562 | case 2: | |
1563 | intr->r_type = R_IMM16; | |
1564 | break; | |
1565 | case 1: | |
1566 | intr->r_type = R_IMM8; | |
1567 | break; | |
1568 | case 4: | |
1569 | intr->r_type = R_IMM32; | |
1570 | break; | |
1571 | default: | |
1572 | abort (); | |
1573 | } | |
1574 | ||
1575 | } | |
1576 | else | |
1577 | { | |
1578 | intr->r_type = fix_ptr->fx_r_type; | |
1579 | } | |
1580 | ||
1581 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; | |
1582 | intr->r_offset = fix_ptr->fx_offset; | |
1583 | ||
1584 | if (symbol_ptr) | |
1585 | intr->r_symndx = symbol_ptr->sy_number; | |
1586 | else | |
1587 | intr->r_symndx = -1; | |
1588 | } | |
1589 |