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252b5132 | 1 | /* tc-v850.c -- Assembler code for the NEC V850 |
310b5aa2 | 2 | Copyright (C) 1996, 1997, 1998, 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 | |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include <ctype.h> | |
23 | #include "as.h" | |
24 | #include "subsegs.h" | |
25 | #include "opcode/v850.h" | |
26 | ||
27 | #define AREA_ZDA 0 | |
28 | #define AREA_SDA 1 | |
29 | #define AREA_TDA 2 | |
30 | ||
31 | /* sign-extend a 16-bit number */ | |
32 | #define SEXT16(x) ((((x) & 0xffff) ^ (~ 0x7fff)) + 0x8000) | |
33 | ||
34 | /* Temporarily holds the reloc in a cons expression. */ | |
35 | static bfd_reloc_code_real_type hold_cons_reloc; | |
36 | ||
37 | /* Set to TRUE if we want to be pedantic about signed overflows. */ | |
38 | static boolean warn_signed_overflows = FALSE; | |
39 | static boolean warn_unsigned_overflows = FALSE; | |
40 | ||
41 | /* Indicates the target BFD machine number. */ | |
42 | static int machine = -1; | |
43 | ||
44 | /* Indicates the target processor(s) for the assemble. */ | |
45 | static unsigned int processor_mask = -1; | |
46 | ||
47 | \f | |
48 | /* Structure to hold information about predefined registers. */ | |
49 | struct reg_name | |
50 | { | |
51 | const char * name; | |
52 | int value; | |
53 | }; | |
54 | ||
55 | /* Generic assembler global variables which must be defined by all targets. */ | |
56 | ||
57 | /* Characters which always start a comment. */ | |
58 | const char comment_chars[] = "#"; | |
59 | ||
60 | /* Characters which start a comment at the beginning of a line. */ | |
61 | const char line_comment_chars[] = ";#"; | |
62 | ||
63 | /* Characters which may be used to separate multiple commands on a | |
64 | single line. */ | |
65 | const char line_separator_chars[] = ";"; | |
66 | ||
67 | /* Characters which are used to indicate an exponent in a floating | |
68 | point number. */ | |
69 | const char EXP_CHARS[] = "eE"; | |
70 | ||
71 | /* Characters which mean that a number is a floating point constant, | |
72 | as in 0d1.0. */ | |
73 | const char FLT_CHARS[] = "dD"; | |
74 | \f | |
75 | ||
76 | const relax_typeS md_relax_table[] = | |
77 | { | |
78 | /* Conditional branches. */ | |
79 | {0xff, -0x100, 2, 1}, | |
80 | {0x1fffff, -0x200000, 6, 0}, | |
81 | /* Unconditional branches. */ | |
82 | {0xff, -0x100, 2, 3}, | |
83 | {0x1fffff, -0x200000, 4, 0}, | |
84 | }; | |
85 | ||
86 | ||
87 | static segT sdata_section = NULL; | |
88 | static segT tdata_section = NULL; | |
89 | static segT zdata_section = NULL; | |
90 | static segT sbss_section = NULL; | |
91 | static segT tbss_section = NULL; | |
92 | static segT zbss_section = NULL; | |
93 | static segT rosdata_section = NULL; | |
94 | static segT rozdata_section = NULL; | |
95 | static segT scommon_section = NULL; | |
96 | static segT tcommon_section = NULL; | |
97 | static segT zcommon_section = NULL; | |
98 | static segT call_table_data_section = NULL; | |
99 | static segT call_table_text_section = NULL; | |
100 | ||
101 | /* fixups */ | |
102 | #define MAX_INSN_FIXUPS (5) | |
103 | struct v850_fixup | |
104 | { | |
105 | expressionS exp; | |
106 | int opindex; | |
107 | bfd_reloc_code_real_type reloc; | |
108 | }; | |
109 | ||
110 | struct v850_fixup fixups [MAX_INSN_FIXUPS]; | |
111 | static int fc; | |
112 | ||
113 | \f | |
114 | void | |
115 | v850_sdata (int ignore) | |
116 | { | |
117 | obj_elf_section_change_hook(); | |
118 | ||
119 | subseg_set (sdata_section, (subsegT) get_absolute_expression ()); | |
120 | ||
121 | demand_empty_rest_of_line (); | |
122 | } | |
123 | ||
124 | void | |
125 | v850_tdata (int ignore) | |
126 | { | |
127 | obj_elf_section_change_hook(); | |
128 | ||
129 | subseg_set (tdata_section, (subsegT) get_absolute_expression ()); | |
130 | ||
131 | demand_empty_rest_of_line (); | |
132 | } | |
133 | ||
134 | void | |
135 | v850_zdata (int ignore) | |
136 | { | |
137 | obj_elf_section_change_hook(); | |
138 | ||
139 | subseg_set (zdata_section, (subsegT) get_absolute_expression ()); | |
140 | ||
141 | demand_empty_rest_of_line (); | |
142 | } | |
143 | ||
144 | void | |
145 | v850_sbss (int ignore) | |
146 | { | |
147 | obj_elf_section_change_hook(); | |
148 | ||
149 | subseg_set (sbss_section, (subsegT) get_absolute_expression ()); | |
150 | ||
151 | demand_empty_rest_of_line (); | |
152 | } | |
153 | ||
154 | void | |
155 | v850_tbss (int ignore) | |
156 | { | |
157 | obj_elf_section_change_hook(); | |
158 | ||
159 | subseg_set (tbss_section, (subsegT) get_absolute_expression ()); | |
160 | ||
161 | demand_empty_rest_of_line (); | |
162 | } | |
163 | ||
164 | void | |
165 | v850_zbss (int ignore) | |
166 | { | |
167 | obj_elf_section_change_hook(); | |
168 | ||
169 | subseg_set (zbss_section, (subsegT) get_absolute_expression ()); | |
170 | ||
171 | demand_empty_rest_of_line (); | |
172 | } | |
173 | ||
174 | void | |
175 | v850_rosdata (int ignore) | |
176 | { | |
177 | obj_elf_section_change_hook(); | |
178 | ||
179 | subseg_set (rosdata_section, (subsegT) get_absolute_expression ()); | |
180 | ||
181 | demand_empty_rest_of_line (); | |
182 | } | |
183 | ||
184 | void | |
185 | v850_rozdata (int ignore) | |
186 | { | |
187 | obj_elf_section_change_hook(); | |
188 | ||
189 | subseg_set (rozdata_section, (subsegT) get_absolute_expression ()); | |
190 | ||
191 | demand_empty_rest_of_line (); | |
192 | } | |
193 | ||
194 | void | |
195 | v850_call_table_data (int ignore) | |
196 | { | |
197 | obj_elf_section_change_hook(); | |
198 | ||
199 | subseg_set (call_table_data_section, (subsegT) get_absolute_expression ()); | |
200 | ||
201 | demand_empty_rest_of_line (); | |
202 | } | |
203 | ||
204 | void | |
205 | v850_call_table_text (int ignore) | |
206 | { | |
207 | obj_elf_section_change_hook(); | |
208 | ||
209 | subseg_set (call_table_text_section, (subsegT) get_absolute_expression ()); | |
210 | ||
211 | demand_empty_rest_of_line (); | |
212 | } | |
213 | ||
214 | void | |
215 | v850_bss (int ignore) | |
216 | { | |
217 | register int temp = get_absolute_expression (); | |
218 | ||
219 | obj_elf_section_change_hook(); | |
220 | ||
221 | subseg_set (bss_section, (subsegT) temp); | |
222 | ||
223 | demand_empty_rest_of_line (); | |
224 | } | |
225 | ||
226 | void | |
227 | v850_offset (int ignore) | |
228 | { | |
229 | int temp = get_absolute_expression (); | |
230 | ||
231 | temp -= frag_now_fix(); | |
232 | ||
233 | if (temp > 0) | |
234 | (void) frag_more (temp); | |
235 | ||
236 | demand_empty_rest_of_line (); | |
237 | } | |
238 | ||
239 | /* Copied from obj_elf_common() in gas/config/obj-elf.c */ | |
240 | static void | |
241 | v850_comm (area) | |
242 | int area; | |
243 | { | |
244 | char * name; | |
245 | char c; | |
246 | char * p; | |
247 | int temp; | |
248 | int size; | |
249 | symbolS * symbolP; | |
250 | int have_align; | |
251 | ||
252 | name = input_line_pointer; | |
253 | c = get_symbol_end (); | |
254 | ||
255 | /* just after name is now '\0' */ | |
256 | p = input_line_pointer; | |
257 | *p = c; | |
258 | ||
259 | SKIP_WHITESPACE (); | |
260 | ||
261 | if (*input_line_pointer != ',') | |
262 | { | |
263 | as_bad (_("Expected comma after symbol-name")); | |
264 | ignore_rest_of_line (); | |
265 | return; | |
266 | } | |
267 | ||
268 | input_line_pointer ++; /* skip ',' */ | |
269 | ||
270 | if ((temp = get_absolute_expression ()) < 0) | |
271 | { | |
272 | /* xgettext:c-format */ | |
273 | as_bad (_(".COMMon length (%d.) < 0! Ignored."), temp); | |
274 | ignore_rest_of_line (); | |
275 | return; | |
276 | } | |
277 | ||
278 | size = temp; | |
279 | *p = 0; | |
280 | symbolP = symbol_find_or_make (name); | |
281 | *p = c; | |
282 | ||
283 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
284 | { | |
285 | as_bad (_("Ignoring attempt to re-define symbol")); | |
286 | ignore_rest_of_line (); | |
287 | return; | |
288 | } | |
289 | ||
290 | if (S_GET_VALUE (symbolP) != 0) | |
291 | { | |
292 | if (S_GET_VALUE (symbolP) != size) | |
293 | { | |
294 | /* xgettext:c-format */ | |
295 | as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."), | |
296 | S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); | |
297 | } | |
298 | } | |
299 | ||
300 | know (symbolP->sy_frag == & zero_address_frag); | |
301 | ||
302 | if (*input_line_pointer != ',') | |
303 | have_align = 0; | |
304 | else | |
305 | { | |
306 | have_align = 1; | |
307 | input_line_pointer++; | |
308 | SKIP_WHITESPACE (); | |
309 | } | |
310 | ||
311 | if (! have_align || *input_line_pointer != '"') | |
312 | { | |
313 | if (! have_align) | |
314 | temp = 0; | |
315 | else | |
316 | { | |
317 | temp = get_absolute_expression (); | |
318 | ||
319 | if (temp < 0) | |
320 | { | |
321 | temp = 0; | |
322 | as_warn (_("Common alignment negative; 0 assumed")); | |
323 | } | |
324 | } | |
325 | ||
326 | if (symbolP->local) | |
327 | { | |
328 | segT old_sec; | |
329 | int old_subsec; | |
330 | char * pfrag; | |
331 | int align; | |
332 | flagword applicable; | |
333 | ||
334 | old_sec = now_seg; | |
335 | old_subsec = now_subseg; | |
336 | ||
337 | applicable = bfd_applicable_section_flags (stdoutput); | |
338 | ||
339 | applicable &= SEC_ALLOC; | |
340 | ||
341 | switch (area) | |
342 | { | |
343 | case AREA_SDA: | |
344 | if (sbss_section == NULL) | |
345 | { | |
346 | sbss_section = subseg_new (".sbss", 0); | |
347 | ||
348 | bfd_set_section_flags (stdoutput, sbss_section, applicable); | |
349 | ||
350 | seg_info (sbss_section)->bss = 1; | |
351 | } | |
352 | break; | |
353 | ||
354 | case AREA_ZDA: | |
355 | if (zbss_section == NULL) | |
356 | { | |
357 | zbss_section = subseg_new (".zbss", 0); | |
358 | ||
359 | bfd_set_section_flags (stdoutput, sbss_section, applicable); | |
360 | ||
361 | seg_info (zbss_section)->bss = 1; | |
362 | } | |
363 | break; | |
364 | ||
365 | case AREA_TDA: | |
366 | if (tbss_section == NULL) | |
367 | { | |
368 | tbss_section = subseg_new (".tbss", 0); | |
369 | ||
370 | bfd_set_section_flags (stdoutput, tbss_section, applicable); | |
371 | ||
372 | seg_info (tbss_section)->bss = 1; | |
373 | } | |
374 | break; | |
375 | } | |
376 | ||
377 | if (temp) | |
378 | { | |
379 | /* convert to a power of 2 alignment */ | |
380 | for (align = 0; (temp & 1) == 0; temp >>= 1, ++align) | |
381 | ; | |
382 | ||
383 | if (temp != 1) | |
384 | { | |
385 | as_bad (_("Common alignment not a power of 2")); | |
386 | ignore_rest_of_line (); | |
387 | return; | |
388 | } | |
389 | } | |
390 | else | |
391 | align = 0; | |
392 | ||
393 | switch (area) | |
394 | { | |
395 | case AREA_SDA: | |
396 | record_alignment (sbss_section, align); | |
397 | obj_elf_section_change_hook(); | |
398 | subseg_set (sbss_section, 0); | |
399 | break; | |
400 | ||
401 | case AREA_ZDA: | |
402 | record_alignment (zbss_section, align); | |
403 | obj_elf_section_change_hook(); | |
404 | subseg_set (zbss_section, 0); | |
405 | break; | |
406 | ||
407 | case AREA_TDA: | |
408 | record_alignment (tbss_section, align); | |
409 | obj_elf_section_change_hook(); | |
410 | subseg_set (tbss_section, 0); | |
411 | break; | |
412 | ||
413 | default: | |
414 | abort(); | |
415 | } | |
416 | ||
417 | if (align) | |
418 | frag_align (align, 0, 0); | |
419 | ||
420 | switch (area) | |
421 | { | |
422 | case AREA_SDA: | |
423 | if (S_GET_SEGMENT (symbolP) == sbss_section) | |
424 | symbolP->sy_frag->fr_symbol = 0; | |
425 | break; | |
426 | ||
427 | case AREA_ZDA: | |
428 | if (S_GET_SEGMENT (symbolP) == zbss_section) | |
429 | symbolP->sy_frag->fr_symbol = 0; | |
430 | break; | |
431 | ||
432 | case AREA_TDA: | |
433 | if (S_GET_SEGMENT (symbolP) == tbss_section) | |
434 | symbolP->sy_frag->fr_symbol = 0; | |
435 | break; | |
436 | ||
437 | default: | |
438 | abort(); | |
439 | } | |
440 | ||
441 | symbolP->sy_frag = frag_now; | |
442 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, | |
443 | (offsetT) size, (char *) 0); | |
444 | *pfrag = 0; | |
445 | S_SET_SIZE (symbolP, size); | |
446 | ||
447 | switch (area) | |
448 | { | |
449 | case AREA_SDA: | |
450 | S_SET_SEGMENT (symbolP, sbss_section); | |
451 | break; | |
452 | ||
453 | case AREA_ZDA: | |
454 | S_SET_SEGMENT (symbolP, zbss_section); | |
455 | break; | |
456 | ||
457 | case AREA_TDA: | |
458 | S_SET_SEGMENT (symbolP, tbss_section); | |
459 | break; | |
460 | ||
461 | default: | |
462 | abort(); | |
463 | } | |
464 | ||
465 | S_CLEAR_EXTERNAL (symbolP); | |
466 | obj_elf_section_change_hook(); | |
467 | subseg_set (old_sec, old_subsec); | |
468 | } | |
469 | else | |
470 | { | |
471 | allocate_common: | |
472 | S_SET_VALUE (symbolP, (valueT) size); | |
473 | S_SET_ALIGN (symbolP, temp); | |
474 | S_SET_EXTERNAL (symbolP); | |
475 | ||
476 | switch (area) | |
477 | { | |
478 | case AREA_SDA: | |
479 | if (scommon_section == NULL) | |
480 | { | |
481 | flagword applicable; | |
482 | ||
483 | applicable = bfd_applicable_section_flags (stdoutput); | |
484 | ||
485 | scommon_section = subseg_new (".scommon", 0); | |
486 | ||
487 | bfd_set_section_flags (stdoutput, scommon_section, applicable | |
488 | & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | |
489 | | SEC_HAS_CONTENTS) | SEC_IS_COMMON); | |
490 | } | |
491 | S_SET_SEGMENT (symbolP, scommon_section); | |
492 | break; | |
493 | ||
494 | case AREA_ZDA: | |
495 | if (zcommon_section == NULL) | |
496 | { | |
497 | flagword applicable; | |
498 | ||
499 | applicable = bfd_applicable_section_flags (stdoutput); | |
500 | ||
501 | zcommon_section = subseg_new (".zcommon", 0); | |
502 | ||
503 | bfd_set_section_flags (stdoutput, zcommon_section, applicable | |
504 | & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | |
505 | | SEC_HAS_CONTENTS) | SEC_IS_COMMON); | |
506 | } | |
507 | S_SET_SEGMENT (symbolP, zcommon_section); | |
508 | break; | |
509 | ||
510 | case AREA_TDA: | |
511 | if (tcommon_section == NULL) | |
512 | { | |
513 | flagword applicable; | |
514 | ||
515 | applicable = bfd_applicable_section_flags (stdoutput); | |
516 | ||
517 | tcommon_section = subseg_new (".tcommon", 0); | |
518 | ||
519 | bfd_set_section_flags (stdoutput, tcommon_section, applicable | |
520 | & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | |
521 | | SEC_HAS_CONTENTS) | SEC_IS_COMMON); | |
522 | } | |
523 | S_SET_SEGMENT (symbolP, tcommon_section); | |
524 | break; | |
525 | ||
526 | default: | |
527 | abort(); | |
528 | } | |
529 | } | |
530 | } | |
531 | else | |
532 | { | |
533 | input_line_pointer++; | |
534 | /* @@ Some use the dot, some don't. Can we get some consistency?? */ | |
535 | if (*input_line_pointer == '.') | |
536 | input_line_pointer++; | |
537 | /* @@ Some say data, some say bss. */ | |
538 | if (strncmp (input_line_pointer, "bss\"", 4) | |
539 | && strncmp (input_line_pointer, "data\"", 5)) | |
540 | { | |
541 | while (*--input_line_pointer != '"') | |
542 | ; | |
543 | input_line_pointer--; | |
544 | goto bad_common_segment; | |
545 | } | |
546 | while (*input_line_pointer++ != '"') | |
547 | ; | |
548 | goto allocate_common; | |
549 | } | |
550 | ||
fed9b18a | 551 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
252b5132 RH |
552 | |
553 | demand_empty_rest_of_line (); | |
554 | return; | |
555 | ||
556 | { | |
557 | bad_common_segment: | |
558 | p = input_line_pointer; | |
559 | while (*p && *p != '\n') | |
560 | p++; | |
561 | c = *p; | |
562 | *p = '\0'; | |
563 | as_bad (_("bad .common segment %s"), input_line_pointer + 1); | |
564 | *p = c; | |
565 | input_line_pointer = p; | |
566 | ignore_rest_of_line (); | |
567 | return; | |
568 | } | |
569 | } | |
570 | ||
571 | void | |
572 | set_machine (int number) | |
573 | { | |
574 | machine = number; | |
575 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine); | |
576 | ||
577 | switch (machine) | |
578 | { | |
579 | case 0: processor_mask = PROCESSOR_V850; break; | |
580 | case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break; | |
581 | case bfd_mach_v850ea: processor_mask = PROCESSOR_V850EA; break; | |
582 | } | |
583 | } | |
584 | ||
585 | /* The target specific pseudo-ops which we support. */ | |
586 | const pseudo_typeS md_pseudo_table[] = | |
587 | { | |
588 | {"sdata", v850_sdata, 0}, | |
589 | {"tdata", v850_tdata, 0}, | |
590 | {"zdata", v850_zdata, 0}, | |
591 | {"sbss", v850_sbss, 0}, | |
592 | {"tbss", v850_tbss, 0}, | |
593 | {"zbss", v850_zbss, 0}, | |
594 | {"rosdata", v850_rosdata, 0}, | |
595 | {"rozdata", v850_rozdata, 0}, | |
596 | {"bss", v850_bss, 0}, | |
597 | {"offset", v850_offset, 0}, | |
598 | {"word", cons, 4}, | |
599 | {"zcomm", v850_comm, AREA_ZDA}, | |
600 | {"scomm", v850_comm, AREA_SDA}, | |
601 | {"tcomm", v850_comm, AREA_TDA}, | |
602 | {"v850", set_machine, 0}, | |
603 | {"call_table_data", v850_call_table_data, 0}, | |
604 | {"call_table_text", v850_call_table_text, 0}, | |
605 | {"v850e", set_machine, bfd_mach_v850e}, | |
606 | {"v850ea", set_machine, bfd_mach_v850ea}, | |
607 | { NULL, NULL, 0} | |
608 | }; | |
609 | ||
610 | /* Opcode hash table. */ | |
611 | static struct hash_control *v850_hash; | |
612 | ||
613 | /* This table is sorted. Suitable for searching by a binary search. */ | |
614 | static const struct reg_name pre_defined_registers[] = | |
615 | { | |
616 | { "ep", 30 }, /* ep - element ptr */ | |
617 | { "gp", 4 }, /* gp - global ptr */ | |
618 | { "hp", 2 }, /* hp - handler stack ptr */ | |
619 | { "lp", 31 }, /* lp - link ptr */ | |
620 | { "r0", 0 }, | |
621 | { "r1", 1 }, | |
622 | { "r10", 10 }, | |
623 | { "r11", 11 }, | |
624 | { "r12", 12 }, | |
625 | { "r13", 13 }, | |
626 | { "r14", 14 }, | |
627 | { "r15", 15 }, | |
628 | { "r16", 16 }, | |
629 | { "r17", 17 }, | |
630 | { "r18", 18 }, | |
631 | { "r19", 19 }, | |
632 | { "r2", 2 }, | |
633 | { "r20", 20 }, | |
634 | { "r21", 21 }, | |
635 | { "r22", 22 }, | |
636 | { "r23", 23 }, | |
637 | { "r24", 24 }, | |
638 | { "r25", 25 }, | |
639 | { "r26", 26 }, | |
640 | { "r27", 27 }, | |
641 | { "r28", 28 }, | |
642 | { "r29", 29 }, | |
643 | { "r3", 3 }, | |
644 | { "r30", 30 }, | |
645 | { "r31", 31 }, | |
646 | { "r4", 4 }, | |
647 | { "r5", 5 }, | |
648 | { "r6", 6 }, | |
649 | { "r7", 7 }, | |
650 | { "r8", 8 }, | |
651 | { "r9", 9 }, | |
652 | { "sp", 3 }, /* sp - stack ptr */ | |
653 | { "tp", 5 }, /* tp - text ptr */ | |
654 | { "zero", 0 }, | |
655 | }; | |
656 | #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name)) | |
657 | ||
658 | ||
659 | static const struct reg_name system_registers[] = | |
660 | { | |
661 | { "ctbp", 20 }, | |
662 | { "ctpc", 16 }, | |
663 | { "ctpsw", 17 }, | |
664 | { "dbpc", 18 }, | |
665 | { "dbpsw", 19 }, | |
666 | { "ecr", 4 }, | |
667 | { "eipc", 0 }, | |
668 | { "eipsw", 1 }, | |
669 | { "fepc", 2 }, | |
670 | { "fepsw", 3 }, | |
671 | { "psw", 5 }, | |
672 | }; | |
673 | #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name)) | |
674 | ||
675 | static const struct reg_name system_list_registers[] = | |
676 | { | |
677 | {"PS", 5 }, | |
678 | {"SR", 0 + 1} | |
679 | }; | |
680 | #define SYSREGLIST_NAME_CNT (sizeof (system_list_registers) / sizeof (struct reg_name)) | |
681 | ||
682 | static const struct reg_name cc_names[] = | |
683 | { | |
684 | { "c", 0x1 }, | |
685 | { "e", 0x2 }, | |
686 | { "ge", 0xe }, | |
687 | { "gt", 0xf }, | |
688 | { "h", 0xb }, | |
689 | { "l", 0x1 }, | |
690 | { "le", 0x7 }, | |
691 | { "lt", 0x6 }, | |
692 | { "n", 0x4 }, | |
693 | { "nc", 0x9 }, | |
694 | { "ne", 0xa }, | |
695 | { "nh", 0x3 }, | |
696 | { "nl", 0x9 }, | |
697 | { "ns", 0xc }, | |
698 | { "nv", 0x8 }, | |
699 | { "nz", 0xa }, | |
700 | { "p", 0xc }, | |
701 | { "s", 0x4 }, | |
702 | { "sa", 0xd }, | |
703 | { "t", 0x5 }, | |
704 | { "v", 0x0 }, | |
705 | { "z", 0x2 }, | |
706 | }; | |
707 | #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name)) | |
708 | ||
709 | /* reg_name_search does a binary search of the given register table | |
710 | to see if "name" is a valid regiter name. Returns the register | |
711 | number from the array on success, or -1 on failure. */ | |
712 | ||
713 | static int | |
714 | reg_name_search (regs, regcount, name, accept_numbers) | |
715 | const struct reg_name * regs; | |
716 | int regcount; | |
717 | const char * name; | |
718 | boolean accept_numbers; | |
719 | { | |
720 | int middle, low, high; | |
721 | int cmp; | |
722 | symbolS * symbolP; | |
723 | ||
724 | /* If the register name is a symbol, then evaluate it. */ | |
725 | if ((symbolP = symbol_find (name)) != NULL) | |
726 | { | |
727 | /* If the symbol is an alias for another name then use that. | |
728 | If the symbol is an alias for a number, then return the number. */ | |
729 | if (symbolP->sy_value.X_op == O_symbol) | |
730 | { | |
731 | name = S_GET_NAME (symbolP->sy_value.X_add_symbol); | |
732 | } | |
733 | else if (accept_numbers) | |
734 | { | |
735 | int reg = S_GET_VALUE (symbolP); | |
736 | ||
737 | if (reg >= 0 && reg <= 31) | |
738 | return reg; | |
739 | } | |
740 | ||
741 | /* Otherwise drop through and try parsing name normally. */ | |
742 | } | |
743 | ||
744 | low = 0; | |
745 | high = regcount - 1; | |
746 | ||
747 | do | |
748 | { | |
749 | middle = (low + high) / 2; | |
750 | cmp = strcasecmp (name, regs[middle].name); | |
751 | if (cmp < 0) | |
752 | high = middle - 1; | |
753 | else if (cmp > 0) | |
754 | low = middle + 1; | |
755 | else | |
756 | return regs[middle].value; | |
757 | } | |
758 | while (low <= high); | |
759 | return -1; | |
760 | } | |
761 | ||
762 | ||
763 | /* Summary of register_name(). | |
764 | * | |
765 | * in: Input_line_pointer points to 1st char of operand. | |
766 | * | |
767 | * out: A expressionS. | |
768 | * The operand may have been a register: in this case, X_op == O_register, | |
769 | * X_add_number is set to the register number, and truth is returned. | |
770 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
771 | * its original state. | |
772 | */ | |
773 | static boolean | |
774 | register_name (expressionP) | |
775 | expressionS * expressionP; | |
776 | { | |
777 | int reg_number; | |
778 | char * name; | |
779 | char * start; | |
780 | char c; | |
781 | ||
782 | /* Find the spelling of the operand */ | |
783 | start = name = input_line_pointer; | |
784 | ||
785 | c = get_symbol_end (); | |
786 | ||
787 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, | |
788 | name, FALSE); | |
789 | ||
790 | * input_line_pointer = c; /* put back the delimiting char */ | |
791 | ||
792 | /* look to see if it's in the register table */ | |
793 | if (reg_number >= 0) | |
794 | { | |
795 | expressionP->X_op = O_register; | |
796 | expressionP->X_add_number = reg_number; | |
797 | ||
798 | /* make the rest nice */ | |
799 | expressionP->X_add_symbol = NULL; | |
800 | expressionP->X_op_symbol = NULL; | |
801 | ||
802 | return true; | |
803 | } | |
804 | else | |
805 | { | |
806 | /* reset the line as if we had not done anything */ | |
807 | input_line_pointer = start; | |
808 | ||
809 | return false; | |
810 | } | |
811 | } | |
812 | ||
813 | /* Summary of system_register_name(). | |
814 | * | |
815 | * in: Input_line_pointer points to 1st char of operand. | |
816 | * expressionP points to an expression structure to be filled in. | |
817 | * accept_numbers is true iff numerical register names may be used. | |
818 | * accept_list_names is true iff the special names PS and SR may be | |
819 | * accepted. | |
820 | * | |
821 | * out: A expressionS structure in expressionP. | |
822 | * The operand may have been a register: in this case, X_op == O_register, | |
823 | * X_add_number is set to the register number, and truth is returned. | |
824 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
825 | * its original state. | |
826 | */ | |
827 | static boolean | |
828 | system_register_name (expressionP, accept_numbers, accept_list_names) | |
829 | expressionS * expressionP; | |
830 | boolean accept_numbers; | |
831 | boolean accept_list_names; | |
832 | { | |
833 | int reg_number; | |
834 | char * name; | |
835 | char * start; | |
836 | char c; | |
837 | ||
838 | /* Find the spelling of the operand */ | |
839 | start = name = input_line_pointer; | |
840 | ||
841 | c = get_symbol_end (); | |
842 | reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name, | |
843 | accept_numbers); | |
844 | ||
845 | * input_line_pointer = c; /* put back the delimiting char */ | |
846 | ||
847 | if (reg_number < 0 | |
848 | && accept_numbers) | |
849 | { | |
850 | input_line_pointer = start; /* reset input_line pointer */ | |
851 | ||
852 | if (isdigit (* input_line_pointer)) | |
853 | { | |
854 | reg_number = strtol (input_line_pointer, & input_line_pointer, 10); | |
855 | ||
856 | /* Make sure that the register number is allowable. */ | |
857 | if ( reg_number < 0 | |
858 | || reg_number > 5 | |
859 | && reg_number < 16 | |
860 | || reg_number > 20 | |
861 | ) | |
862 | { | |
863 | reg_number = -1; | |
864 | } | |
865 | } | |
866 | else if (accept_list_names) | |
867 | { | |
868 | c = get_symbol_end (); | |
869 | reg_number = reg_name_search (system_list_registers, | |
870 | SYSREGLIST_NAME_CNT, name, FALSE); | |
871 | ||
872 | * input_line_pointer = c; /* put back the delimiting char */ | |
873 | } | |
874 | } | |
875 | ||
876 | /* look to see if it's in the register table */ | |
877 | if (reg_number >= 0) | |
878 | { | |
879 | expressionP->X_op = O_register; | |
880 | expressionP->X_add_number = reg_number; | |
881 | ||
882 | /* make the rest nice */ | |
883 | expressionP->X_add_symbol = NULL; | |
884 | expressionP->X_op_symbol = NULL; | |
885 | ||
886 | return true; | |
887 | } | |
888 | else | |
889 | { | |
890 | /* reset the line as if we had not done anything */ | |
891 | input_line_pointer = start; | |
892 | ||
893 | return false; | |
894 | } | |
895 | } | |
896 | ||
897 | /* Summary of cc_name(). | |
898 | * | |
899 | * in: Input_line_pointer points to 1st char of operand. | |
900 | * | |
901 | * out: A expressionS. | |
902 | * The operand may have been a register: in this case, X_op == O_register, | |
903 | * X_add_number is set to the register number, and truth is returned. | |
904 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
905 | * its original state. | |
906 | */ | |
907 | static boolean | |
908 | cc_name (expressionP) | |
909 | expressionS * expressionP; | |
910 | { | |
911 | int reg_number; | |
912 | char * name; | |
913 | char * start; | |
914 | char c; | |
915 | ||
916 | /* Find the spelling of the operand */ | |
917 | start = name = input_line_pointer; | |
918 | ||
919 | c = get_symbol_end (); | |
920 | reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE); | |
921 | ||
922 | * input_line_pointer = c; /* put back the delimiting char */ | |
923 | ||
924 | /* look to see if it's in the register table */ | |
925 | if (reg_number >= 0) | |
926 | { | |
927 | expressionP->X_op = O_constant; | |
928 | expressionP->X_add_number = reg_number; | |
929 | ||
930 | /* make the rest nice */ | |
931 | expressionP->X_add_symbol = NULL; | |
932 | expressionP->X_op_symbol = NULL; | |
933 | ||
934 | return true; | |
935 | } | |
936 | else | |
937 | { | |
938 | /* reset the line as if we had not done anything */ | |
939 | input_line_pointer = start; | |
940 | ||
941 | return false; | |
942 | } | |
943 | } | |
944 | ||
945 | static void | |
946 | skip_white_space (void) | |
947 | { | |
948 | while ( * input_line_pointer == ' ' | |
949 | || * input_line_pointer == '\t') | |
950 | ++ input_line_pointer; | |
951 | } | |
952 | ||
953 | /* Summary of parse_register_list (). | |
954 | * | |
955 | * in: Input_line_pointer points to 1st char of a list of registers. | |
956 | * insn is the partially constructed instruction. | |
957 | * operand is the operand being inserted. | |
958 | * | |
959 | * out: NULL if the parse completed successfully, otherwise a | |
960 | * pointer to an error message is returned. If the parse | |
961 | * completes the correct bit fields in the instruction | |
962 | * will be filled in. | |
963 | * | |
964 | * Parses register lists with the syntax: | |
965 | * | |
966 | * { rX } | |
967 | * { rX, rY } | |
968 | * { rX - rY } | |
969 | * { rX - rY, rZ } | |
970 | * etc | |
971 | * | |
972 | * and also parses constant epxressions whoes bits indicate the | |
973 | * registers in the lists. The LSB in the expression refers to | |
974 | * the lowest numbered permissable register in the register list, | |
975 | * and so on upwards. System registers are considered to be very | |
976 | * high numbers. | |
977 | * | |
978 | */ | |
979 | static char * | |
980 | parse_register_list | |
981 | ( | |
982 | unsigned long * insn, | |
983 | const struct v850_operand * operand | |
984 | ) | |
985 | { | |
986 | static int type1_regs[ 32 ] = { 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 }; | |
987 | static int type2_regs[ 32 ] = { 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 }; | |
988 | static int type3_regs[ 32 ] = { 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8 }; | |
989 | int * regs; | |
990 | expressionS exp; | |
991 | ||
992 | ||
993 | /* Select a register array to parse. */ | |
994 | switch (operand->shift) | |
995 | { | |
996 | case 0xffe00001: regs = type1_regs; break; | |
997 | case 0xfff8000f: regs = type2_regs; break; | |
998 | case 0xfff8001f: regs = type3_regs; break; | |
999 | default: | |
1000 | as_bad (_("unknown operand shift: %x\n"), operand->shift); | |
1001 | return _("internal failure in parse_register_list"); | |
1002 | } | |
1003 | ||
1004 | skip_white_space (); | |
1005 | ||
1006 | /* If the expression starts with a curly brace it is a register list. | |
1007 | Otherwise it is a constant expression, whoes bits indicate which | |
1008 | registers are to be included in the list. */ | |
1009 | ||
1010 | if (* input_line_pointer != '{') | |
1011 | { | |
1012 | int bits; | |
1013 | int reg; | |
1014 | int i; | |
1015 | ||
1016 | expression (& exp); | |
1017 | ||
1018 | if (exp.X_op != O_constant) | |
1019 | return _("constant expression or register list expected"); | |
1020 | ||
1021 | if (regs == type1_regs) | |
1022 | { | |
1023 | if (exp.X_add_number & 0xFFFFF000) | |
1024 | return _("high bits set in register list expression"); | |
1025 | ||
1026 | for (reg = 20; reg < 32; reg ++) | |
1027 | if (exp.X_add_number & (1 << (reg - 20))) | |
1028 | { | |
1029 | for (i = 0; i < 32; i++) | |
1030 | if (regs[i] == reg) | |
1031 | * insn |= (1 << i); | |
1032 | } | |
1033 | } | |
1034 | else if (regs == type2_regs) | |
1035 | { | |
1036 | if (exp.X_add_number & 0xFFFE0000) | |
1037 | return _("high bits set in register list expression"); | |
1038 | ||
1039 | for (reg = 1; reg < 16; reg ++) | |
1040 | if (exp.X_add_number & (1 << (reg - 1))) | |
1041 | { | |
1042 | for (i = 0; i < 32; i++) | |
1043 | if (regs[i] == reg) | |
1044 | * insn |= (1 << i); | |
1045 | } | |
1046 | ||
1047 | if (exp.X_add_number & (1 << 15)) | |
1048 | * insn |= (1 << 3); | |
1049 | ||
1050 | if (exp.X_add_number & (1 << 16)) | |
1051 | * insn |= (1 << 19); | |
1052 | } | |
1053 | else /* regs == type3_regs */ | |
1054 | { | |
1055 | if (exp.X_add_number & 0xFFFE0000) | |
1056 | return _("high bits set in register list expression"); | |
1057 | ||
1058 | for (reg = 16; reg < 32; reg ++) | |
1059 | if (exp.X_add_number & (1 << (reg - 16))) | |
1060 | { | |
1061 | for (i = 0; i < 32; i++) | |
1062 | if (regs[i] == reg) | |
1063 | * insn |= (1 << i); | |
1064 | } | |
1065 | ||
1066 | if (exp.X_add_number & (1 << 16)) | |
1067 | * insn |= (1 << 19); | |
1068 | } | |
1069 | ||
1070 | return NULL; | |
1071 | } | |
1072 | ||
1073 | input_line_pointer ++; | |
1074 | ||
1075 | /* Parse the register list until a terminator (closing curly brace or | |
1076 | new-line) is found. */ | |
1077 | for (;;) | |
1078 | { | |
1079 | if (register_name (& exp)) | |
1080 | { | |
1081 | int i; | |
1082 | ||
1083 | /* Locate the given register in the list, and if it is there, | |
1084 | insert the corresponding bit into the instruction. */ | |
1085 | for (i = 0; i < 32; i++) | |
1086 | { | |
1087 | if (regs[ i ] == exp.X_add_number) | |
1088 | { | |
1089 | * insn |= (1 << i); | |
1090 | break; | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | if (i == 32) | |
1095 | { | |
1096 | return _("illegal register included in list"); | |
1097 | } | |
1098 | } | |
1099 | else if (system_register_name (& exp, true, true)) | |
1100 | { | |
1101 | if (regs == type1_regs) | |
1102 | { | |
1103 | return _("system registers cannot be included in list"); | |
1104 | } | |
1105 | else if (exp.X_add_number == 5) | |
1106 | { | |
1107 | if (regs == type2_regs) | |
1108 | return _("PSW cannot be included in list"); | |
1109 | else | |
1110 | * insn |= 0x8; | |
1111 | } | |
1112 | else if (exp.X_add_number < 4) | |
1113 | * insn |= 0x80000; | |
1114 | else | |
1115 | return _("High value system registers cannot be included in list"); | |
1116 | } | |
1117 | else if (* input_line_pointer == '}') | |
1118 | { | |
1119 | input_line_pointer ++; | |
1120 | break; | |
1121 | } | |
1122 | else if (* input_line_pointer == ',') | |
1123 | { | |
1124 | input_line_pointer ++; | |
1125 | continue; | |
1126 | } | |
1127 | else if (* input_line_pointer == '-') | |
1128 | { | |
1129 | /* We have encountered a range of registers: rX - rY */ | |
1130 | int j; | |
1131 | expressionS exp2; | |
1132 | ||
1133 | /* Skip the dash. */ | |
1134 | ++ input_line_pointer; | |
1135 | ||
1136 | /* Get the second register in the range. */ | |
1137 | if (! register_name (& exp2)) | |
1138 | { | |
1139 | return _("second register should follow dash in register list"); | |
1140 | exp2.X_add_number = exp.X_add_number; | |
1141 | } | |
1142 | ||
1143 | /* Add the rest of the registers in the range. */ | |
1144 | for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++) | |
1145 | { | |
1146 | int i; | |
1147 | ||
1148 | /* Locate the given register in the list, and if it is there, | |
1149 | insert the corresponding bit into the instruction. */ | |
1150 | for (i = 0; i < 32; i++) | |
1151 | { | |
1152 | if (regs[ i ] == j) | |
1153 | { | |
1154 | * insn |= (1 << i); | |
1155 | break; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | if (i == 32) | |
1160 | return _("illegal register included in list"); | |
1161 | } | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | break; | |
1166 | } | |
1167 | ||
1168 | skip_white_space (); | |
1169 | } | |
1170 | ||
1171 | return NULL; | |
1172 | } | |
1173 | ||
1174 | CONST char * md_shortopts = "m:"; | |
1175 | ||
1176 | struct option md_longopts[] = | |
1177 | { | |
1178 | {NULL, no_argument, NULL, 0} | |
1179 | }; | |
1180 | size_t md_longopts_size = sizeof md_longopts; | |
1181 | ||
1182 | ||
1183 | void | |
1184 | md_show_usage (stream) | |
1185 | FILE * stream; | |
1186 | { | |
1187 | fprintf (stream, _(" V850 options:\n")); | |
1188 | fprintf (stream, _(" -mwarn-signed-overflow Warn if signed immediate values overflow\n")); | |
1189 | fprintf (stream, _(" -mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n")); | |
1190 | fprintf (stream, _(" -mv850 The code is targeted at the v850\n")); | |
1191 | fprintf (stream, _(" -mv850e The code is targeted at the v850e\n")); | |
1192 | fprintf (stream, _(" -mv850ea The code is targeted at the v850ea\n")); | |
1193 | fprintf (stream, _(" -mv850any The code is generic, despite any processor specific instructions\n")); | |
1194 | } | |
1195 | ||
1196 | int | |
1197 | md_parse_option (c, arg) | |
1198 | int c; | |
1199 | char * arg; | |
1200 | { | |
1201 | if (c != 'm') | |
1202 | { | |
1203 | /* xgettext:c-format */ | |
1204 | fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg); | |
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | if (strcmp (arg, "warn-signed-overflow") == 0) | |
1209 | { | |
1210 | warn_signed_overflows = TRUE; | |
1211 | } | |
1212 | else if (strcmp (arg, "warn-unsigned-overflow") == 0) | |
1213 | { | |
1214 | warn_unsigned_overflows = TRUE; | |
1215 | } | |
1216 | else if (strcmp (arg, "v850") == 0) | |
1217 | { | |
1218 | machine = 0; | |
1219 | processor_mask = PROCESSOR_V850; | |
1220 | } | |
1221 | else if (strcmp (arg, "v850e") == 0) | |
1222 | { | |
1223 | machine = bfd_mach_v850e; | |
1224 | processor_mask = PROCESSOR_V850E; | |
1225 | } | |
1226 | else if (strcmp (arg, "v850ea") == 0) | |
1227 | { | |
1228 | machine = bfd_mach_v850ea; | |
1229 | processor_mask = PROCESSOR_V850EA; | |
1230 | } | |
1231 | else if (strcmp (arg, "v850any") == 0) | |
1232 | { | |
1233 | machine = 0; /* Tell the world that this is for any v850 chip. */ | |
1234 | processor_mask = PROCESSOR_V850EA; /* But support instructions for the extended versions. */ | |
1235 | } | |
1236 | else | |
1237 | { | |
1238 | /* xgettext:c-format */ | |
1239 | fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg); | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | return 1; | |
1244 | } | |
1245 | ||
1246 | symbolS * | |
1247 | md_undefined_symbol (name) | |
1248 | char * name; | |
1249 | { | |
1250 | return 0; | |
1251 | } | |
1252 | ||
1253 | char * | |
1254 | md_atof (type, litp, sizep) | |
1255 | int type; | |
1256 | char * litp; | |
1257 | int * sizep; | |
1258 | { | |
1259 | int prec; | |
1260 | LITTLENUM_TYPE words[4]; | |
1261 | char * t; | |
1262 | int i; | |
1263 | ||
1264 | switch (type) | |
1265 | { | |
1266 | case 'f': | |
1267 | prec = 2; | |
1268 | break; | |
1269 | ||
1270 | case 'd': | |
1271 | prec = 4; | |
1272 | break; | |
1273 | ||
1274 | default: | |
1275 | *sizep = 0; | |
1276 | return _("bad call to md_atof"); | |
1277 | } | |
1278 | ||
1279 | t = atof_ieee (input_line_pointer, type, words); | |
1280 | if (t) | |
1281 | input_line_pointer = t; | |
1282 | ||
1283 | *sizep = prec * 2; | |
1284 | ||
1285 | for (i = prec - 1; i >= 0; i--) | |
1286 | { | |
1287 | md_number_to_chars (litp, (valueT) words[i], 2); | |
1288 | litp += 2; | |
1289 | } | |
1290 | ||
1291 | return NULL; | |
1292 | } | |
1293 | ||
1294 | ||
1295 | /* Very gross. */ | |
1296 | void | |
1297 | md_convert_frag (abfd, sec, fragP) | |
1298 | bfd * abfd; | |
1299 | asection * sec; | |
1300 | fragS * fragP; | |
1301 | { | |
1302 | subseg_change (sec, 0); | |
1303 | ||
1304 | /* In range conditional or unconditional branch. */ | |
1305 | if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2) | |
1306 | { | |
1307 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
1308 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode); | |
1309 | fragP->fr_var = 0; | |
1310 | fragP->fr_fix += 2; | |
1311 | } | |
1312 | /* Out of range conditional branch. Emit a branch around a jump. */ | |
1313 | else if (fragP->fr_subtype == 1) | |
1314 | { | |
1315 | unsigned char *buffer = | |
1316 | (unsigned char *) (fragP->fr_fix + fragP->fr_literal); | |
1317 | ||
1318 | /* Reverse the condition of the first branch. */ | |
1319 | buffer[0] ^= 0x08; | |
1320 | /* Mask off all the displacement bits. */ | |
1321 | buffer[0] &= 0x8f; | |
1322 | buffer[1] &= 0x07; | |
1323 | /* Now set the displacement bits so that we branch | |
1324 | around the unconditional branch. */ | |
1325 | buffer[0] |= 0x30; | |
1326 | ||
1327 | /* Now create the unconditional branch + fixup to the final | |
1328 | target. */ | |
1329 | md_number_to_chars (buffer + 2, 0x00000780, 4); | |
1330 | fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, | |
1331 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + | |
1332 | (int) fragP->fr_opcode + 1); | |
1333 | fragP->fr_var = 0; | |
1334 | fragP->fr_fix += 6; | |
1335 | } | |
1336 | /* Out of range unconditional branch. Emit a jump. */ | |
1337 | else if (fragP->fr_subtype == 3) | |
1338 | { | |
1339 | md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4); | |
1340 | fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, | |
1341 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + | |
1342 | (int) fragP->fr_opcode + 1); | |
1343 | fragP->fr_var = 0; | |
1344 | fragP->fr_fix += 4; | |
1345 | } | |
1346 | else | |
1347 | abort (); | |
1348 | } | |
1349 | ||
1350 | valueT | |
1351 | md_section_align (seg, addr) | |
1352 | asection * seg; | |
1353 | valueT addr; | |
1354 | { | |
1355 | int align = bfd_get_section_alignment (stdoutput, seg); | |
1356 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
1357 | } | |
1358 | ||
1359 | void | |
1360 | md_begin () | |
1361 | { | |
1362 | char * prev_name = ""; | |
1363 | register const struct v850_opcode * op; | |
1364 | flagword applicable; | |
1365 | ||
1366 | if (strncmp (TARGET_CPU, "v850ea", 6) == 0) | |
1367 | { | |
1368 | if (machine == -1) | |
1369 | machine = bfd_mach_v850ea; | |
1370 | ||
1371 | if (processor_mask == -1) | |
1372 | processor_mask = PROCESSOR_V850EA; | |
1373 | } | |
1374 | else if (strncmp (TARGET_CPU, "v850e", 5) == 0) | |
1375 | { | |
1376 | if (machine == -1) | |
1377 | machine = bfd_mach_v850e; | |
1378 | ||
1379 | if (processor_mask == -1) | |
1380 | processor_mask = PROCESSOR_V850E; | |
1381 | } | |
1382 | else | |
1383 | if (strncmp (TARGET_CPU, "v850", 4) == 0) | |
1384 | { | |
1385 | if (machine == -1) | |
1386 | machine = 0; | |
1387 | ||
1388 | if (processor_mask == -1) | |
1389 | processor_mask = PROCESSOR_V850; | |
1390 | } | |
1391 | else | |
1392 | /* xgettext:c-format */ | |
1393 | as_bad (_("Unable to determine default target processor from string: %s"), | |
1394 | TARGET_CPU); | |
1395 | ||
1396 | v850_hash = hash_new(); | |
1397 | ||
1398 | /* Insert unique names into hash table. The V850 instruction set | |
1399 | has many identical opcode names that have different opcodes based | |
1400 | on the operands. This hash table then provides a quick index to | |
1401 | the first opcode with a particular name in the opcode table. */ | |
1402 | ||
1403 | op = v850_opcodes; | |
1404 | while (op->name) | |
1405 | { | |
1406 | if (strcmp (prev_name, op->name)) | |
1407 | { | |
1408 | prev_name = (char *) op->name; | |
1409 | hash_insert (v850_hash, op->name, (char *) op); | |
1410 | } | |
1411 | op++; | |
1412 | } | |
1413 | ||
1414 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine); | |
1415 | ||
1416 | applicable = bfd_applicable_section_flags (stdoutput); | |
1417 | ||
1418 | call_table_data_section = subseg_new (".call_table_data", 0); | |
1419 | bfd_set_section_flags (stdoutput, call_table_data_section, | |
1420 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
1421 | | SEC_DATA | SEC_HAS_CONTENTS)); | |
1422 | ||
1423 | call_table_text_section = subseg_new (".call_table_text", 0); | |
1424 | bfd_set_section_flags (stdoutput, call_table_text_section, | |
1425 | applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
1426 | | SEC_CODE)); | |
1427 | ||
1428 | /* Restore text section as the current default. */ | |
1429 | subseg_set (text_section, 0); | |
1430 | } | |
1431 | ||
1432 | ||
1433 | static bfd_reloc_code_real_type | |
1434 | handle_ctoff (const struct v850_operand * operand) | |
1435 | { | |
1436 | if (operand == NULL) | |
1437 | return BFD_RELOC_V850_CALLT_16_16_OFFSET; | |
1438 | ||
1439 | if ( operand->bits != 6 | |
1440 | || operand->shift != 0) | |
1441 | { | |
1442 | as_bad (_("ctoff() relocation used on an instruction which does not support it")); | |
1443 | return BFD_RELOC_64; /* Used to indicate an error condition. */ | |
1444 | } | |
1445 | ||
1446 | return BFD_RELOC_V850_CALLT_6_7_OFFSET; | |
1447 | } | |
1448 | ||
1449 | static bfd_reloc_code_real_type | |
1450 | handle_sdaoff (const struct v850_operand * operand) | |
1451 | { | |
1452 | if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET; | |
1453 | if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET; | |
1454 | if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET; | |
1455 | ||
1456 | if ( operand->bits != 16 | |
1457 | || operand->shift != 16) | |
1458 | { | |
1459 | as_bad (_("sdaoff() relocation used on an instruction which does not support it")); | |
1460 | return BFD_RELOC_64; /* Used to indicate an error condition. */ | |
1461 | } | |
1462 | ||
1463 | return BFD_RELOC_V850_SDA_16_16_OFFSET; | |
1464 | } | |
1465 | ||
1466 | static bfd_reloc_code_real_type | |
1467 | handle_zdaoff (const struct v850_operand * operand) | |
1468 | { | |
1469 | if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET; | |
1470 | if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET; | |
1471 | if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET; | |
1472 | ||
1473 | if ( operand->bits != 16 | |
1474 | || operand->shift != 16) | |
1475 | { | |
1476 | as_bad (_("zdaoff() relocation used on an instruction which does not support it")); | |
1477 | return BFD_RELOC_64; /* Used to indicate an error condition. */ | |
1478 | } | |
1479 | ||
1480 | return BFD_RELOC_V850_ZDA_16_16_OFFSET; | |
1481 | } | |
1482 | ||
1483 | static bfd_reloc_code_real_type | |
1484 | handle_tdaoff (const struct v850_operand * operand) | |
1485 | { | |
1486 | if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */ | |
1487 | if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */ | |
1488 | if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */ | |
1489 | if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */ | |
1490 | if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */ | |
1491 | ||
1492 | if (operand->bits != 7) | |
1493 | { | |
1494 | as_bad (_("tdaoff() relocation used on an instruction which does not support it")); | |
1495 | return BFD_RELOC_64; /* Used to indicate an error condition. */ | |
1496 | } | |
1497 | ||
1498 | return operand->insert != NULL | |
1499 | ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */ | |
1500 | : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */ | |
1501 | } | |
1502 | ||
1503 | /* Warning: The code in this function relies upon the definitions | |
1504 | in the v850_operands[] array (defined in opcodes/v850-opc.c) | |
1505 | matching the hard coded values contained herein. */ | |
1506 | ||
1507 | static bfd_reloc_code_real_type | |
1508 | v850_reloc_prefix (const struct v850_operand * operand) | |
1509 | { | |
1510 | boolean paren_skipped = false; | |
1511 | ||
1512 | ||
1513 | /* Skip leading opening parenthesis. */ | |
1514 | if (* input_line_pointer == '(') | |
1515 | { | |
1516 | ++ input_line_pointer; | |
1517 | paren_skipped = true; | |
1518 | } | |
1519 | ||
1520 | #define CHECK_(name, reloc) \ | |
1521 | if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \ | |
1522 | { \ | |
1523 | input_line_pointer += strlen (name); \ | |
1524 | return reloc; \ | |
1525 | } | |
1526 | ||
1527 | CHECK_ ("hi0", BFD_RELOC_HI16); | |
1528 | CHECK_ ("hi", BFD_RELOC_HI16_S); | |
1529 | CHECK_ ("lo", BFD_RELOC_LO16); | |
1530 | CHECK_ ("sdaoff", handle_sdaoff (operand)); | |
1531 | CHECK_ ("zdaoff", handle_zdaoff (operand)); | |
1532 | CHECK_ ("tdaoff", handle_tdaoff (operand)); | |
1533 | CHECK_ ("hilo", BFD_RELOC_32); | |
1534 | CHECK_ ("ctoff", handle_ctoff (operand)); | |
1535 | ||
1536 | /* Restore skipped parenthesis. */ | |
1537 | if (paren_skipped) | |
1538 | -- input_line_pointer; | |
1539 | ||
1540 | return BFD_RELOC_UNUSED; | |
1541 | } | |
1542 | ||
1543 | /* Insert an operand value into an instruction. */ | |
1544 | ||
1545 | static unsigned long | |
1546 | v850_insert_operand (insn, operand, val, file, line, str) | |
1547 | unsigned long insn; | |
1548 | const struct v850_operand * operand; | |
1549 | offsetT val; | |
1550 | char * file; | |
1551 | unsigned int line; | |
1552 | char * str; | |
1553 | { | |
1554 | if (operand->insert) | |
1555 | { | |
1556 | const char * message = NULL; | |
1557 | ||
1558 | insn = operand->insert (insn, val, & message); | |
1559 | if (message != NULL) | |
1560 | { | |
1561 | if ((operand->flags & V850_OPERAND_SIGNED) | |
1562 | && ! warn_signed_overflows | |
1563 | && strstr (message, "out of range") != NULL) | |
1564 | { | |
1565 | /* skip warning... */ | |
1566 | } | |
1567 | else if ((operand->flags & V850_OPERAND_SIGNED) == 0 | |
1568 | && ! warn_unsigned_overflows | |
1569 | && strstr (message, "out of range") != NULL) | |
1570 | { | |
1571 | /* skip warning... */ | |
1572 | } | |
1573 | else if (str) | |
1574 | { | |
1575 | if (file == (char *) NULL) | |
1576 | as_warn ("%s: %s", str, message); | |
1577 | else | |
1578 | as_warn_where (file, line, "%s: %s", str, message); | |
1579 | } | |
1580 | else | |
1581 | { | |
1582 | if (file == (char *) NULL) | |
1583 | as_warn (message); | |
1584 | else | |
1585 | as_warn_where (file, line, message); | |
1586 | } | |
1587 | } | |
1588 | } | |
1589 | else | |
1590 | { | |
1591 | if (operand->bits != 32) | |
1592 | { | |
1593 | long min, max; | |
1594 | offsetT test; | |
1595 | ||
1596 | if ((operand->flags & V850_OPERAND_SIGNED) != 0) | |
1597 | { | |
1598 | if (! warn_signed_overflows) | |
1599 | max = (1 << operand->bits) - 1; | |
1600 | else | |
1601 | max = (1 << (operand->bits - 1)) - 1; | |
1602 | ||
1603 | min = - (1 << (operand->bits - 1)); | |
1604 | } | |
1605 | else | |
1606 | { | |
1607 | max = (1 << operand->bits) - 1; | |
1608 | ||
1609 | if (! warn_unsigned_overflows) | |
1610 | min = - (1 << (operand->bits - 1)); | |
1611 | else | |
1612 | min = 0; | |
1613 | } | |
1614 | ||
1615 | if (val < (offsetT) min || val > (offsetT) max) | |
1616 | { | |
1617 | /* xgettext:c-format */ | |
1618 | const char * err = _("operand out of range (%s not between %ld and %ld)"); | |
1619 | char buf[100]; | |
1620 | ||
1621 | /* Restore min and mix to expected values for decimal ranges. */ | |
1622 | if ((operand->flags & V850_OPERAND_SIGNED) | |
1623 | && ! warn_signed_overflows) | |
1624 | max = (1 << (operand->bits - 1)) - 1; | |
1625 | ||
1626 | if (! (operand->flags & V850_OPERAND_SIGNED) | |
1627 | && ! warn_unsigned_overflows) | |
1628 | min = 0; | |
1629 | ||
1630 | if (str) | |
1631 | { | |
1632 | sprintf (buf, "%s: ", str); | |
1633 | ||
1634 | sprint_value (buf + strlen (buf), val); | |
1635 | } | |
1636 | else | |
1637 | sprint_value (buf, val); | |
1638 | ||
1639 | if (file == (char *) NULL) | |
1640 | as_warn (err, buf, min, max); | |
1641 | else | |
1642 | as_warn_where (file, line, err, buf, min, max); | |
1643 | } | |
1644 | } | |
1645 | ||
1646 | insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift); | |
1647 | } | |
1648 | ||
1649 | return insn; | |
1650 | } | |
1651 | ||
1652 | \f | |
1653 | static char copy_of_instruction [128]; | |
1654 | ||
1655 | void | |
1656 | md_assemble (str) | |
1657 | char * str; | |
1658 | { | |
1659 | char * s; | |
1660 | char * start_of_operands; | |
1661 | struct v850_opcode * opcode; | |
1662 | struct v850_opcode * next_opcode; | |
1663 | const unsigned char * opindex_ptr; | |
1664 | int next_opindex; | |
1665 | int relaxable; | |
1666 | unsigned long insn; | |
1667 | unsigned long insn_size; | |
1668 | char * f; | |
1669 | int i; | |
1670 | int match; | |
1671 | boolean extra_data_after_insn = false; | |
1672 | unsigned extra_data_len; | |
1673 | unsigned long extra_data; | |
1674 | char * saved_input_line_pointer; | |
1675 | ||
1676 | ||
1677 | strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1); | |
1678 | ||
1679 | /* Get the opcode. */ | |
1680 | for (s = str; *s != '\0' && ! isspace (*s); s++) | |
1681 | continue; | |
1682 | ||
1683 | if (*s != '\0') | |
1684 | *s++ = '\0'; | |
1685 | ||
1686 | /* find the first opcode with the proper name */ | |
1687 | opcode = (struct v850_opcode *) hash_find (v850_hash, str); | |
1688 | if (opcode == NULL) | |
1689 | { | |
1690 | /* xgettext:c-format */ | |
1691 | as_bad (_("Unrecognized opcode: `%s'"), str); | |
1692 | ignore_rest_of_line (); | |
1693 | return; | |
1694 | } | |
1695 | ||
1696 | str = s; | |
1697 | while (isspace (* str)) | |
1698 | ++ str; | |
1699 | ||
1700 | start_of_operands = str; | |
1701 | ||
1702 | saved_input_line_pointer = input_line_pointer; | |
1703 | ||
1704 | for (;;) | |
1705 | { | |
1706 | const char * errmsg = NULL; | |
1707 | ||
1708 | match = 0; | |
1709 | ||
1710 | if ((opcode->processors & processor_mask) == 0) | |
1711 | { | |
1712 | errmsg = _("Target processor does not support this instruction."); | |
1713 | goto error; | |
1714 | } | |
1715 | ||
1716 | relaxable = 0; | |
1717 | fc = 0; | |
1718 | next_opindex = 0; | |
1719 | insn = opcode->opcode; | |
1720 | extra_data_after_insn = false; | |
1721 | ||
1722 | input_line_pointer = str = start_of_operands; | |
1723 | ||
1724 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr ++) | |
1725 | { | |
1726 | const struct v850_operand * operand; | |
1727 | char * hold; | |
1728 | expressionS ex; | |
1729 | bfd_reloc_code_real_type reloc; | |
1730 | ||
1731 | if (next_opindex == 0) | |
1732 | { | |
1733 | operand = & v850_operands[ * opindex_ptr ]; | |
1734 | } | |
1735 | else | |
1736 | { | |
1737 | operand = & v850_operands[ next_opindex ]; | |
1738 | next_opindex = 0; | |
1739 | } | |
1740 | ||
1741 | errmsg = NULL; | |
1742 | ||
1743 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']') | |
1744 | ++ str; | |
1745 | ||
1746 | if (operand->flags & V850_OPERAND_RELAX) | |
1747 | relaxable = 1; | |
1748 | ||
1749 | /* Gather the operand. */ | |
1750 | hold = input_line_pointer; | |
1751 | input_line_pointer = str; | |
1752 | ||
1753 | /* lo(), hi(), hi0(), etc... */ | |
1754 | if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED) | |
1755 | { | |
1756 | /* This is a fake reloc, used to indicate an error condition. */ | |
1757 | if (reloc == BFD_RELOC_64) | |
1758 | { | |
1759 | match = 1; | |
1760 | goto error; | |
1761 | } | |
1762 | ||
1763 | expression (& ex); | |
1764 | ||
1765 | if (ex.X_op == O_constant) | |
1766 | { | |
1767 | switch (reloc) | |
1768 | { | |
1769 | case BFD_RELOC_V850_ZDA_16_16_OFFSET: | |
1770 | /* To cope with "not1 7, zdaoff(0xfffff006)[r0]" | |
1771 | and the like. */ | |
1772 | /* Fall through. */ | |
1773 | ||
1774 | case BFD_RELOC_LO16: | |
1775 | { | |
1776 | /* Truncate, then sign extend the value. */ | |
1777 | ex.X_add_number = SEXT16 (ex.X_add_number); | |
1778 | break; | |
1779 | } | |
1780 | ||
1781 | case BFD_RELOC_HI16: | |
1782 | { | |
1783 | /* Truncate, then sign extend the value. */ | |
1784 | ex.X_add_number = SEXT16 (ex.X_add_number >> 16); | |
1785 | break; | |
1786 | } | |
1787 | ||
1788 | case BFD_RELOC_HI16_S: | |
1789 | { | |
1790 | /* Truncate, then sign extend the value. */ | |
1791 | int temp = (ex.X_add_number >> 16) & 0xffff; | |
1792 | ||
1793 | temp += (ex.X_add_number >> 15) & 1; | |
1794 | ||
1795 | ex.X_add_number = SEXT16 (temp); | |
1796 | break; | |
1797 | } | |
1798 | ||
1799 | case BFD_RELOC_32: | |
1800 | if ((operand->flags & V850E_IMMEDIATE32) == 0) | |
1801 | { | |
1802 | errmsg = _("immediate operand is too large"); | |
1803 | goto error; | |
1804 | } | |
1805 | ||
1806 | extra_data_after_insn = true; | |
1807 | extra_data_len = 4; | |
1808 | extra_data = ex.X_add_number; | |
1809 | ex.X_add_number = 0; | |
1810 | break; | |
1811 | ||
1812 | default: | |
1813 | fprintf (stderr, "reloc: %d\n", reloc); | |
1814 | as_bad (_("AAARG -> unhandled constant reloc")); | |
1815 | break; | |
1816 | } | |
1817 | ||
1818 | if (fc > MAX_INSN_FIXUPS) | |
1819 | as_fatal (_("too many fixups")); | |
1820 | ||
1821 | fixups[ fc ].exp = ex; | |
1822 | fixups[ fc ].opindex = * opindex_ptr; | |
1823 | fixups[ fc ].reloc = reloc; | |
1824 | fc++; | |
1825 | } | |
1826 | else | |
1827 | { | |
1828 | if (reloc == BFD_RELOC_32) | |
1829 | { | |
1830 | if ((operand->flags & V850E_IMMEDIATE32) == 0) | |
1831 | { | |
1832 | errmsg = _("immediate operand is too large"); | |
1833 | goto error; | |
1834 | } | |
1835 | ||
1836 | extra_data_after_insn = true; | |
1837 | extra_data_len = 4; | |
1838 | extra_data = ex.X_add_number; | |
1839 | } | |
1840 | ||
1841 | if (fc > MAX_INSN_FIXUPS) | |
1842 | as_fatal (_("too many fixups")); | |
1843 | ||
1844 | fixups[ fc ].exp = ex; | |
1845 | fixups[ fc ].opindex = * opindex_ptr; | |
1846 | fixups[ fc ].reloc = reloc; | |
1847 | fc++; | |
1848 | } | |
1849 | } | |
1850 | else | |
1851 | { | |
1852 | errmsg = NULL; | |
1853 | ||
1854 | if ((operand->flags & V850_OPERAND_REG) != 0) | |
1855 | { | |
1856 | if (!register_name (& ex)) | |
1857 | { | |
1858 | errmsg = _("invalid register name"); | |
1859 | } | |
1860 | else if ((operand->flags & V850_NOT_R0) | |
1861 | && ex.X_add_number == 0) | |
1862 | { | |
1863 | errmsg = _("register r0 cannot be used here"); | |
1864 | ||
1865 | /* Force an error message to be generated by | |
1866 | skipping over any following potential matches | |
1867 | for this opcode. */ | |
1868 | opcode += 3; | |
1869 | } | |
1870 | } | |
1871 | else if ((operand->flags & V850_OPERAND_SRG) != 0) | |
1872 | { | |
1873 | if (!system_register_name (& ex, true, false)) | |
1874 | { | |
1875 | errmsg = _("invalid system register name"); | |
1876 | } | |
1877 | } | |
1878 | else if ((operand->flags & V850_OPERAND_EP) != 0) | |
1879 | { | |
1880 | char * start = input_line_pointer; | |
1881 | char c = get_symbol_end (); | |
1882 | ||
1883 | if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0) | |
1884 | { | |
1885 | /* Put things back the way we found them. */ | |
1886 | *input_line_pointer = c; | |
1887 | input_line_pointer = start; | |
1888 | errmsg = _("expected EP register"); | |
1889 | goto error; | |
1890 | } | |
1891 | ||
1892 | *input_line_pointer = c; | |
1893 | str = input_line_pointer; | |
1894 | input_line_pointer = hold; | |
1895 | ||
1896 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']') | |
1897 | ++ str; | |
1898 | continue; | |
1899 | } | |
1900 | else if ((operand->flags & V850_OPERAND_CC) != 0) | |
1901 | { | |
1902 | if (!cc_name (& ex)) | |
1903 | { | |
1904 | errmsg = _("invalid condition code name"); | |
1905 | } | |
1906 | } | |
1907 | else if (operand->flags & V850E_PUSH_POP) | |
1908 | { | |
1909 | errmsg = parse_register_list (& insn, operand); | |
1910 | ||
1911 | /* The parse_register_list() function has already done | |
1912 | everything, so fake a dummy expression. */ | |
1913 | ex.X_op = O_constant; | |
1914 | ex.X_add_number = 0; | |
1915 | } | |
1916 | else if (operand->flags & V850E_IMMEDIATE16) | |
1917 | { | |
1918 | expression (& ex); | |
1919 | ||
1920 | if (ex.X_op != O_constant) | |
1921 | errmsg = _("constant expression expected"); | |
1922 | else if (ex.X_add_number & 0xffff0000) | |
1923 | { | |
1924 | if (ex.X_add_number & 0xffff) | |
1925 | errmsg = _("constant too big to fit into instruction"); | |
1926 | else if ((insn & 0x001fffc0) == 0x00130780) | |
1927 | ex.X_add_number >>= 16; | |
1928 | else | |
1929 | errmsg = _("constant too big to fit into instruction"); | |
1930 | } | |
1931 | ||
1932 | extra_data_after_insn = true; | |
1933 | extra_data_len = 2; | |
1934 | extra_data = ex.X_add_number; | |
1935 | ex.X_add_number = 0; | |
1936 | } | |
1937 | else if (operand->flags & V850E_IMMEDIATE32) | |
1938 | { | |
1939 | expression (& ex); | |
1940 | ||
1941 | if (ex.X_op != O_constant) | |
1942 | errmsg = _("constant expression expected"); | |
1943 | ||
1944 | extra_data_after_insn = true; | |
1945 | extra_data_len = 4; | |
1946 | extra_data = ex.X_add_number; | |
1947 | ex.X_add_number = 0; | |
1948 | } | |
1949 | else if (register_name (& ex) | |
1950 | && (operand->flags & V850_OPERAND_REG) == 0) | |
1951 | { | |
1952 | char c; | |
1953 | int exists = 0; | |
1954 | ||
1955 | /* It is possible that an alias has been defined that | |
1956 | matches a register name. For example the code may | |
1957 | include a ".set ZERO, 0" directive, which matches | |
1958 | the register name "zero". Attempt to reparse the | |
1959 | field as an expression, and only complain if we | |
1960 | cannot generate a constant. */ | |
1961 | ||
1962 | input_line_pointer = str; | |
1963 | ||
1964 | c = get_symbol_end (); | |
1965 | ||
1966 | if (symbol_find (str) != NULL) | |
1967 | exists = 1; | |
1968 | ||
1969 | * input_line_pointer = c; | |
1970 | input_line_pointer = str; | |
1971 | ||
1972 | expression (& ex); | |
1973 | ||
1974 | if (ex.X_op != O_constant) | |
1975 | { | |
1976 | /* If this register is actually occuring too early on | |
1977 | the parsing of the instruction, (because another | |
1978 | field is missing) then report this. */ | |
1979 | if (opindex_ptr[1] != 0 | |
1980 | && (v850_operands [opindex_ptr [1]].flags & V850_OPERAND_REG)) | |
1981 | errmsg = _("syntax error: value is missing before the register name"); | |
1982 | else | |
1983 | errmsg = _("syntax error: register not expected"); | |
1984 | ||
1985 | /* If we created a symbol in the process of this test then | |
1986 | delete it now, so that it will not be output with the real | |
1987 | symbols... */ | |
1988 | if (exists == 0 | |
1989 | && ex.X_op == O_symbol) | |
1990 | symbol_remove (ex.X_add_symbol, | |
1991 | & symbol_rootP, & symbol_lastP); | |
1992 | } | |
1993 | } | |
1994 | else if (system_register_name (& ex, false, false) | |
1995 | && (operand->flags & V850_OPERAND_SRG) == 0) | |
1996 | { | |
1997 | errmsg = _("syntax error: system register not expected"); | |
1998 | } | |
1999 | else if (cc_name (&ex) | |
2000 | && (operand->flags & V850_OPERAND_CC) == 0) | |
2001 | { | |
2002 | errmsg = _("syntax error: condition code not expected"); | |
2003 | } | |
2004 | else | |
2005 | { | |
2006 | expression (& ex); | |
2007 | /* Special case: | |
2008 | If we are assembling a MOV instruction (or a CALLT.... :-) | |
2009 | and the immediate value does not fit into the bits | |
2010 | available then create a fake error so that the next MOV | |
2011 | instruction will be selected. This one has a 32 bit | |
2012 | immediate field. */ | |
2013 | ||
2014 | if (((insn & 0x07e0) == 0x0200) | |
2015 | && ex.X_op == O_constant | |
2016 | && (ex.X_add_number < (- (1 << (operand->bits - 1))) | |
2017 | || ex.X_add_number > ((1 << operand->bits) - 1))) | |
2018 | errmsg = _("immediate operand is too large"); | |
2019 | } | |
2020 | ||
2021 | if (errmsg) | |
2022 | goto error; | |
2023 | ||
2024 | /* fprintf (stderr, " insn: %x, operand %d, op: %d, add_number: %d\n", | |
2025 | insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number); */ | |
2026 | ||
2027 | switch (ex.X_op) | |
2028 | { | |
2029 | case O_illegal: | |
2030 | errmsg = _("illegal operand"); | |
2031 | goto error; | |
2032 | case O_absent: | |
2033 | errmsg = _("missing operand"); | |
2034 | goto error; | |
2035 | case O_register: | |
2036 | if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0) | |
2037 | { | |
2038 | errmsg = _("invalid operand"); | |
2039 | goto error; | |
2040 | } | |
2041 | insn = v850_insert_operand (insn, operand, ex.X_add_number, | |
2042 | (char *) NULL, 0, | |
2043 | copy_of_instruction); | |
2044 | break; | |
2045 | ||
2046 | case O_constant: | |
2047 | insn = v850_insert_operand (insn, operand, ex.X_add_number, | |
2048 | (char *) NULL, 0, | |
2049 | copy_of_instruction); | |
2050 | break; | |
2051 | ||
2052 | default: | |
2053 | /* We need to generate a fixup for this expression. */ | |
2054 | if (fc >= MAX_INSN_FIXUPS) | |
2055 | as_fatal (_("too many fixups")); | |
2056 | ||
2057 | fixups[ fc ].exp = ex; | |
2058 | fixups[ fc ].opindex = * opindex_ptr; | |
2059 | fixups[ fc ].reloc = BFD_RELOC_UNUSED; | |
2060 | ++fc; | |
2061 | break; | |
2062 | } | |
2063 | } | |
2064 | ||
2065 | str = input_line_pointer; | |
2066 | input_line_pointer = hold; | |
2067 | ||
2068 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']' | |
2069 | || *str == ')') | |
2070 | ++str; | |
2071 | } | |
2072 | match = 1; | |
2073 | ||
2074 | error: | |
2075 | if (match == 0) | |
2076 | { | |
2077 | next_opcode = opcode + 1; | |
2078 | if (next_opcode->name != NULL | |
2079 | && strcmp (next_opcode->name, opcode->name) == 0) | |
2080 | { | |
2081 | opcode = next_opcode; | |
2082 | ||
2083 | /* Skip versions that are not supported by the target | |
2084 | processor. */ | |
2085 | if ((opcode->processors & processor_mask) == 0) | |
2086 | goto error; | |
2087 | ||
2088 | continue; | |
2089 | } | |
2090 | ||
2091 | as_bad ("%s: %s", copy_of_instruction, errmsg); | |
2092 | ||
2093 | if (* input_line_pointer == ']') | |
2094 | ++ input_line_pointer; | |
2095 | ||
2096 | ignore_rest_of_line (); | |
2097 | input_line_pointer = saved_input_line_pointer; | |
2098 | return; | |
2099 | } | |
2100 | break; | |
2101 | } | |
2102 | ||
2103 | while (isspace (*str)) | |
2104 | ++str; | |
2105 | ||
2106 | if (*str != '\0') | |
2107 | /* xgettext:c-format */ | |
2108 | as_bad (_("junk at end of line: `%s'"), str); | |
2109 | ||
2110 | input_line_pointer = str; | |
2111 | ||
2112 | /* Write out the instruction. */ | |
2113 | ||
2114 | if (relaxable && fc > 0) | |
2115 | { | |
2116 | insn_size = 2; | |
2117 | fc = 0; | |
2118 | ||
2119 | if (!strcmp (opcode->name, "br")) | |
2120 | { | |
2121 | f = frag_var (rs_machine_dependent, 4, 2, 2, | |
2122 | fixups[0].exp.X_add_symbol, | |
2123 | fixups[0].exp.X_add_number, | |
2124 | (char *)fixups[0].opindex); | |
2125 | md_number_to_chars (f, insn, insn_size); | |
2126 | md_number_to_chars (f + 2, 0, 2); | |
2127 | } | |
2128 | else | |
2129 | { | |
2130 | f = frag_var (rs_machine_dependent, 6, 4, 0, | |
2131 | fixups[0].exp.X_add_symbol, | |
2132 | fixups[0].exp.X_add_number, | |
2133 | (char *)fixups[0].opindex); | |
2134 | md_number_to_chars (f, insn, insn_size); | |
2135 | md_number_to_chars (f + 2, 0, 4); | |
2136 | } | |
2137 | } | |
2138 | else | |
2139 | { | |
2140 | /* Four byte insns have an opcode with the two high bits on. */ | |
2141 | if ((insn & 0x0600) == 0x0600) | |
2142 | insn_size = 4; | |
2143 | else | |
2144 | insn_size = 2; | |
2145 | ||
2146 | /* Special case: 32 bit MOV */ | |
2147 | if ((insn & 0xffe0) == 0x0620) | |
2148 | insn_size = 2; | |
2149 | ||
2150 | f = frag_more (insn_size); | |
2151 | ||
2152 | md_number_to_chars (f, insn, insn_size); | |
2153 | ||
2154 | if (extra_data_after_insn) | |
2155 | { | |
2156 | f = frag_more (extra_data_len); | |
2157 | ||
2158 | md_number_to_chars (f, extra_data, extra_data_len); | |
2159 | ||
2160 | extra_data_after_insn = false; | |
2161 | } | |
2162 | } | |
2163 | ||
2164 | /* Create any fixups. At this point we do not use a | |
2165 | bfd_reloc_code_real_type, but instead just use the | |
2166 | BFD_RELOC_UNUSED plus the operand index. This lets us easily | |
2167 | handle fixups for any operand type, although that is admittedly | |
2168 | not a very exciting feature. We pick a BFD reloc type in | |
2169 | md_apply_fix. */ | |
2170 | for (i = 0; i < fc; i++) | |
2171 | { | |
2172 | const struct v850_operand * operand; | |
2173 | bfd_reloc_code_real_type reloc; | |
2174 | ||
2175 | operand = & v850_operands[ fixups[i].opindex ]; | |
2176 | ||
2177 | reloc = fixups[i].reloc; | |
2178 | ||
2179 | if (reloc != BFD_RELOC_UNUSED) | |
2180 | { | |
2181 | reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput, | |
2182 | reloc); | |
2183 | int size; | |
2184 | int address; | |
2185 | fixS * fixP; | |
2186 | ||
2187 | if (!reloc_howto) | |
2188 | abort(); | |
2189 | ||
2190 | size = bfd_get_reloc_size (reloc_howto); | |
2191 | ||
2192 | /* XXX This will abort on an R_V850_8 reloc - | |
2193 | is this reloc actually used ? */ | |
2194 | if (size != 2 && size != 4) | |
2195 | abort (); | |
2196 | ||
2197 | address = (f - frag_now->fr_literal) + insn_size - size; | |
2198 | ||
2199 | if (reloc == BFD_RELOC_32) | |
2200 | { | |
2201 | address += 2; | |
2202 | } | |
2203 | ||
2204 | fixP = fix_new_exp (frag_now, address, size, | |
2205 | & fixups[i].exp, | |
2206 | reloc_howto->pc_relative, | |
2207 | reloc); | |
2208 | ||
2209 | switch (reloc) | |
2210 | { | |
2211 | case BFD_RELOC_LO16: | |
2212 | case BFD_RELOC_HI16: | |
2213 | case BFD_RELOC_HI16_S: | |
2214 | fixP->fx_no_overflow = 1; | |
2215 | break; | |
2216 | } | |
2217 | } | |
2218 | else | |
2219 | { | |
2220 | fix_new_exp ( | |
2221 | frag_now, | |
2222 | f - frag_now->fr_literal, 4, | |
2223 | & fixups[i].exp, | |
2224 | 1 /* FIXME: V850_OPERAND_RELATIVE ??? */, | |
2225 | (bfd_reloc_code_real_type) (fixups[i].opindex | |
2226 | + (int) BFD_RELOC_UNUSED) | |
2227 | ); | |
2228 | } | |
2229 | } | |
2230 | ||
2231 | input_line_pointer = saved_input_line_pointer; | |
2232 | } | |
2233 | ||
2234 | ||
2235 | /* If while processing a fixup, a reloc really needs to be created */ | |
2236 | /* then it is done here. */ | |
2237 | ||
2238 | arelent * | |
2239 | tc_gen_reloc (seg, fixp) | |
2240 | asection * seg; | |
2241 | fixS * fixp; | |
2242 | { | |
2243 | arelent * reloc; | |
2244 | ||
2245 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
310b5aa2 ILT |
2246 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
2247 | *reloc->sym_ptr_ptr= symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
2248 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
2249 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
2250 | ||
2251 | if (reloc->howto == (reloc_howto_type *) NULL) | |
2252 | { | |
2253 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
2254 | /* xgettext:c-format */ | |
2255 | _("reloc %d not supported by object file format"), | |
2256 | (int) fixp->fx_r_type); | |
2257 | ||
2258 | xfree (reloc); | |
2259 | ||
2260 | return NULL; | |
2261 | } | |
2262 | ||
2263 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY | |
2264 | || fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT) | |
2265 | reloc->addend = fixp->fx_offset; | |
2266 | else | |
2267 | reloc->addend = fixp->fx_addnumber; | |
2268 | ||
2269 | return reloc; | |
2270 | } | |
2271 | ||
2272 | /* Assume everything will fit in two bytes, then expand as necessary. */ | |
2273 | int | |
2274 | md_estimate_size_before_relax (fragp, seg) | |
2275 | fragS * fragp; | |
2276 | asection * seg; | |
2277 | { | |
2278 | if (fragp->fr_subtype == 0) | |
2279 | fragp->fr_var = 4; | |
2280 | else if (fragp->fr_subtype == 2) | |
2281 | fragp->fr_var = 2; | |
2282 | else | |
2283 | abort (); | |
2284 | return 2; | |
2285 | } | |
2286 | ||
2287 | long | |
2288 | v850_pcrel_from_section (fixp, section) | |
2289 | fixS * fixp; | |
2290 | segT section; | |
2291 | { | |
2292 | /* If the symbol is undefined, or in a section other than our own, | |
2293 | then let the linker figure it out. */ | |
2294 | if (fixp->fx_addsy != (symbolS *) NULL | |
2295 | && (! S_IS_DEFINED (fixp->fx_addsy) | |
2296 | || (S_GET_SEGMENT (fixp->fx_addsy) != section))) | |
2297 | { | |
2298 | /* The symbol is undefined/not in our section. | |
2299 | Let the linker figure it out. */ | |
2300 | return 0; | |
2301 | } | |
2302 | ||
2303 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
2304 | } | |
2305 | ||
2306 | int | |
2307 | md_apply_fix3 (fixp, valuep, seg) | |
2308 | fixS * fixp; | |
2309 | valueT * valuep; | |
2310 | segT seg; | |
2311 | { | |
2312 | valueT value; | |
2313 | char * where; | |
2314 | ||
2315 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
2316 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
2317 | { | |
2318 | fixp->fx_done = 0; | |
2319 | return 1; | |
2320 | } | |
2321 | ||
2322 | if (fixp->fx_addsy == (symbolS *) NULL) | |
2323 | { | |
2324 | value = * valuep; | |
2325 | fixp->fx_done = 1; | |
2326 | } | |
2327 | else if (fixp->fx_pcrel) | |
2328 | value = * valuep; | |
2329 | else | |
2330 | { | |
2331 | value = fixp->fx_offset; | |
2332 | if (fixp->fx_subsy != (symbolS *) NULL) | |
2333 | { | |
2334 | if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) | |
2335 | value -= S_GET_VALUE (fixp->fx_subsy); | |
2336 | else | |
2337 | { | |
2338 | /* We don't actually support subtracting a symbol. */ | |
2339 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
2340 | _("expression too complex")); | |
2341 | } | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
2346 | { | |
2347 | int opindex; | |
2348 | const struct v850_operand * operand; | |
2349 | unsigned long insn; | |
2350 | ||
2351 | opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED; | |
2352 | operand = & v850_operands[ opindex ]; | |
2353 | ||
2354 | /* Fetch the instruction, insert the fully resolved operand | |
2355 | value, and stuff the instruction back again. | |
2356 | ||
2357 | Note the instruction has been stored in little endian | |
2358 | format! */ | |
2359 | where = fixp->fx_frag->fr_literal + fixp->fx_where; | |
2360 | ||
2361 | insn = bfd_getl32 ((unsigned char *) where); | |
2362 | insn = v850_insert_operand (insn, operand, (offsetT) value, | |
2363 | fixp->fx_file, fixp->fx_line, NULL); | |
2364 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); | |
2365 | ||
2366 | if (fixp->fx_done) | |
2367 | { | |
2368 | /* Nothing else to do here. */ | |
2369 | return 1; | |
2370 | } | |
2371 | ||
2372 | /* Determine a BFD reloc value based on the operand information. | |
2373 | We are only prepared to turn a few of the operands into relocs. */ | |
2374 | ||
2375 | if (operand->bits == 22) | |
2376 | fixp->fx_r_type = BFD_RELOC_V850_22_PCREL; | |
2377 | else if (operand->bits == 9) | |
2378 | fixp->fx_r_type = BFD_RELOC_V850_9_PCREL; | |
2379 | else | |
2380 | { | |
2381 | /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */ | |
2382 | ||
2383 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
2384 | _("unresolved expression that must be resolved")); | |
2385 | fixp->fx_done = 1; | |
2386 | return 1; | |
2387 | } | |
2388 | } | |
2389 | else if (fixp->fx_done) | |
2390 | { | |
2391 | /* We still have to insert the value into memory! */ | |
2392 | where = fixp->fx_frag->fr_literal + fixp->fx_where; | |
2393 | ||
2394 | if (fixp->fx_size == 1) | |
2395 | * where = value & 0xff; | |
2396 | else if (fixp->fx_size == 2) | |
2397 | bfd_putl16 (value & 0xffff, (unsigned char *) where); | |
2398 | else if (fixp->fx_size == 4) | |
2399 | bfd_putl32 (value, (unsigned char *) where); | |
2400 | } | |
2401 | ||
2402 | fixp->fx_addnumber = value; | |
2403 | return 1; | |
2404 | } | |
2405 | ||
2406 | \f | |
2407 | /* Parse a cons expression. We have to handle hi(), lo(), etc | |
2408 | on the v850. */ | |
2409 | void | |
2410 | parse_cons_expression_v850 (exp) | |
2411 | expressionS *exp; | |
2412 | { | |
2413 | /* See if there's a reloc prefix like hi() we have to handle. */ | |
2414 | hold_cons_reloc = v850_reloc_prefix (NULL); | |
2415 | ||
2416 | /* Do normal expression parsing. */ | |
2417 | expression (exp); | |
2418 | } | |
2419 | ||
2420 | /* Create a fixup for a cons expression. If parse_cons_expression_v850 | |
2421 | found a reloc prefix, then we use that reloc, else we choose an | |
2422 | appropriate one based on the size of the expression. */ | |
2423 | void | |
2424 | cons_fix_new_v850 (frag, where, size, exp) | |
2425 | fragS *frag; | |
2426 | int where; | |
2427 | int size; | |
2428 | expressionS *exp; | |
2429 | { | |
2430 | if (hold_cons_reloc == BFD_RELOC_UNUSED) | |
2431 | { | |
2432 | if (size == 4) | |
2433 | hold_cons_reloc = BFD_RELOC_32; | |
2434 | if (size == 2) | |
2435 | hold_cons_reloc = BFD_RELOC_16; | |
2436 | if (size == 1) | |
2437 | hold_cons_reloc = BFD_RELOC_8; | |
2438 | } | |
2439 | ||
2440 | if (exp != NULL) | |
2441 | fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc); | |
2442 | else | |
2443 | fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc); | |
2444 | } | |
2445 | boolean | |
2446 | v850_fix_adjustable (fixP) | |
2447 | fixS *fixP; | |
2448 | { | |
2449 | ||
2450 | if (fixP->fx_addsy == NULL) | |
2451 | return 1; | |
2452 | ||
2453 | /* Prevent all adjustments to global symbols. */ | |
2454 | if (S_IS_EXTERN (fixP->fx_addsy)) | |
2455 | return 0; | |
2456 | if (S_IS_WEAK (fixP->fx_addsy)) | |
2457 | return 0; | |
2458 | /* Don't adjust function names */ | |
2459 | if (S_IS_FUNCTION (fixP->fx_addsy)) | |
2460 | return 0; | |
2461 | ||
2462 | /* We need the symbol name for the VTABLE entries */ | |
2463 | if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
2464 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
2465 | return 0; | |
2466 | ||
2467 | return 1; | |
2468 | } | |
2469 | ||
2470 | int | |
2471 | v850_force_relocation (fixp) | |
2472 | struct fix *fixp; | |
2473 | { | |
2474 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
2475 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
2476 | return 1; | |
2477 | ||
2478 | return 0; | |
2479 | } |