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Add sanitization markers.
[deliverable/binutils-gdb.git] / gas / config / tc-v850.c
1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright (C) 1996, 1997, 1998 Free Software Foundation.
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 /* start-sanitize-v850e */
99 static segT call_table_data_section = NULL;
100 static segT call_table_text_section = NULL;
101 /* end-sanitize-v850e */
102
103 /* fixups */
104 #define MAX_INSN_FIXUPS (5)
105 struct v850_fixup
106 {
107 expressionS exp;
108 int opindex;
109 bfd_reloc_code_real_type reloc;
110 };
111
112 struct v850_fixup fixups [MAX_INSN_FIXUPS];
113 static int fc;
114
115 \f
116 void
117 v850_sdata (int ignore)
118 {
119 obj_elf_section_change_hook();
120
121 subseg_set (sdata_section, (subsegT) get_absolute_expression ());
122
123 demand_empty_rest_of_line ();
124 }
125
126 void
127 v850_tdata (int ignore)
128 {
129 obj_elf_section_change_hook();
130
131 subseg_set (tdata_section, (subsegT) get_absolute_expression ());
132
133 demand_empty_rest_of_line ();
134 }
135
136 void
137 v850_zdata (int ignore)
138 {
139 obj_elf_section_change_hook();
140
141 subseg_set (zdata_section, (subsegT) get_absolute_expression ());
142
143 demand_empty_rest_of_line ();
144 }
145
146 void
147 v850_sbss (int ignore)
148 {
149 obj_elf_section_change_hook();
150
151 subseg_set (sbss_section, (subsegT) get_absolute_expression ());
152
153 demand_empty_rest_of_line ();
154 }
155
156 void
157 v850_tbss (int ignore)
158 {
159 obj_elf_section_change_hook();
160
161 subseg_set (tbss_section, (subsegT) get_absolute_expression ());
162
163 demand_empty_rest_of_line ();
164 }
165
166 void
167 v850_zbss (int ignore)
168 {
169 obj_elf_section_change_hook();
170
171 subseg_set (zbss_section, (subsegT) get_absolute_expression ());
172
173 demand_empty_rest_of_line ();
174 }
175
176 void
177 v850_rosdata (int ignore)
178 {
179 obj_elf_section_change_hook();
180
181 subseg_set (rosdata_section, (subsegT) get_absolute_expression ());
182
183 demand_empty_rest_of_line ();
184 }
185
186 void
187 v850_rozdata (int ignore)
188 {
189 obj_elf_section_change_hook();
190
191 subseg_set (rozdata_section, (subsegT) get_absolute_expression ());
192
193 demand_empty_rest_of_line ();
194 }
195
196 /* start-sanitize-v850e */
197 void
198 v850_call_table_data (int ignore)
199 {
200 obj_elf_section_change_hook();
201
202 subseg_set (call_table_data_section, (subsegT) get_absolute_expression ());
203
204 demand_empty_rest_of_line ();
205 }
206
207 void
208 v850_call_table_text (int ignore)
209 {
210 obj_elf_section_change_hook();
211
212 subseg_set (call_table_text_section, (subsegT) get_absolute_expression ());
213
214 demand_empty_rest_of_line ();
215 }
216 /* end-sanitize-v850e */
217
218 void
219 v850_bss (int ignore)
220 {
221 register int temp = get_absolute_expression ();
222
223 obj_elf_section_change_hook();
224
225 subseg_set (bss_section, (subsegT) temp);
226
227 demand_empty_rest_of_line ();
228 }
229
230 void
231 v850_offset (int ignore)
232 {
233 int temp = get_absolute_expression ();
234
235 temp -= frag_now_fix();
236
237 if (temp > 0)
238 (void) frag_more (temp);
239
240 demand_empty_rest_of_line ();
241 }
242
243 /* Copied from obj_elf_common() in gas/config/obj-elf.c */
244 static void
245 v850_comm (area)
246 int area;
247 {
248 char * name;
249 char c;
250 char * p;
251 int temp;
252 int size;
253 symbolS * symbolP;
254 int have_align;
255
256 name = input_line_pointer;
257 c = get_symbol_end ();
258
259 /* just after name is now '\0' */
260 p = input_line_pointer;
261 *p = c;
262
263 SKIP_WHITESPACE ();
264
265 if (*input_line_pointer != ',')
266 {
267 as_bad (_("Expected comma after symbol-name"));
268 ignore_rest_of_line ();
269 return;
270 }
271
272 input_line_pointer++; /* skip ',' */
273
274 if ((temp = get_absolute_expression ()) < 0)
275 {
276 /* xgettext:c-format */
277 as_bad (_(".COMMon length (%d.) < 0! Ignored."), temp);
278 ignore_rest_of_line ();
279 return;
280 }
281
282 size = temp;
283 *p = 0;
284 symbolP = symbol_find_or_make (name);
285 *p = c;
286
287 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
288 {
289 as_bad (_("Ignoring attempt to re-define symbol"));
290 ignore_rest_of_line ();
291 return;
292 }
293
294 if (S_GET_VALUE (symbolP) != 0)
295 {
296 if (S_GET_VALUE (symbolP) != size)
297 {
298 /* xgettext:c-format */
299 as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."),
300 S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size);
301 }
302 }
303
304 know (symbolP->sy_frag == & zero_address_frag);
305
306 if (*input_line_pointer != ',')
307 have_align = 0;
308 else
309 {
310 have_align = 1;
311 input_line_pointer++;
312 SKIP_WHITESPACE ();
313 }
314
315 if (! have_align || *input_line_pointer != '"')
316 {
317 if (! have_align)
318 temp = 0;
319 else
320 {
321 temp = get_absolute_expression ();
322 if (temp < 0)
323 {
324 temp = 0;
325 as_warn (_("Common alignment negative; 0 assumed"));
326 }
327 }
328
329 if (symbolP->local)
330 {
331 segT old_sec;
332 int old_subsec;
333 char * pfrag;
334 int align;
335 flagword applicable;
336
337 old_sec = now_seg;
338 old_subsec = now_subseg;
339
340 applicable = bfd_applicable_section_flags (stdoutput);
341
342 applicable &= SEC_ALLOC;
343
344 switch (area)
345 {
346 case AREA_SDA:
347 if (sbss_section == NULL)
348 {
349 sbss_section = subseg_new (".sbss", 0);
350
351 bfd_set_section_flags (stdoutput, sbss_section, applicable);
352
353 seg_info (sbss_section)->bss = 1;
354 }
355 break;
356
357 case AREA_ZDA:
358 if (zbss_section == NULL)
359 {
360 zbss_section = subseg_new (".zbss", 0);
361
362 bfd_set_section_flags (stdoutput, sbss_section, applicable);
363
364 seg_info (zbss_section)->bss = 1;
365 }
366 break;
367
368 case AREA_TDA:
369 if (tbss_section == NULL)
370 {
371 tbss_section = subseg_new (".tbss", 0);
372
373 bfd_set_section_flags (stdoutput, tbss_section, applicable);
374
375 seg_info (tbss_section)->bss = 1;
376 }
377 break;
378 }
379
380 if (temp)
381 {
382 /* convert to a power of 2 alignment */
383 for (align = 0; (temp & 1) == 0; temp >>= 1, ++align)
384 ;
385
386 if (temp != 1)
387 {
388 as_bad (_("Common alignment not a power of 2"));
389 ignore_rest_of_line ();
390 return;
391 }
392 }
393 else
394 align = 0;
395
396 switch (area)
397 {
398 case AREA_SDA:
399 record_alignment (sbss_section, align);
400 obj_elf_section_change_hook();
401 subseg_set (sbss_section, 0);
402 break;
403
404 case AREA_ZDA:
405 record_alignment (zbss_section, align);
406 obj_elf_section_change_hook();
407 subseg_set (zbss_section, 0);
408 break;
409
410 case AREA_TDA:
411 record_alignment (tbss_section, align);
412 obj_elf_section_change_hook();
413 subseg_set (tbss_section, 0);
414 break;
415
416 default:
417 abort();
418 }
419
420 if (align)
421 frag_align (align, 0, 0);
422
423 switch (area)
424 {
425 case AREA_SDA:
426 if (S_GET_SEGMENT (symbolP) == sbss_section)
427 symbolP->sy_frag->fr_symbol = 0;
428 break;
429
430 case AREA_ZDA:
431 if (S_GET_SEGMENT (symbolP) == zbss_section)
432 symbolP->sy_frag->fr_symbol = 0;
433 break;
434
435 case AREA_TDA:
436 if (S_GET_SEGMENT (symbolP) == tbss_section)
437 symbolP->sy_frag->fr_symbol = 0;
438 break;
439
440 default:
441 abort();
442 }
443
444 symbolP->sy_frag = frag_now;
445 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
446 (offsetT) size, (char *) 0);
447 *pfrag = 0;
448 S_SET_SIZE (symbolP, size);
449
450 switch (area)
451 {
452 case AREA_SDA:
453 S_SET_SEGMENT (symbolP, sbss_section);
454 break;
455
456 case AREA_ZDA:
457 S_SET_SEGMENT (symbolP, zbss_section);
458 break;
459
460 case AREA_TDA:
461 S_SET_SEGMENT (symbolP, tbss_section);
462 break;
463
464 default:
465 abort();
466 }
467
468 S_CLEAR_EXTERNAL (symbolP);
469 obj_elf_section_change_hook();
470 subseg_set (old_sec, old_subsec);
471 }
472 else
473 {
474 allocate_common:
475 S_SET_VALUE (symbolP, (valueT) size);
476 S_SET_ALIGN (symbolP, temp);
477 S_SET_EXTERNAL (symbolP);
478
479 switch (area)
480 {
481 case AREA_SDA:
482 if (scommon_section == NULL)
483 {
484 flagword applicable;
485
486 applicable = bfd_applicable_section_flags (stdoutput);
487
488 scommon_section = subseg_new (".scommon", 0);
489
490 bfd_set_section_flags (stdoutput, scommon_section, applicable
491 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
492 | SEC_HAS_CONTENTS) | SEC_IS_COMMON);
493 }
494 S_SET_SEGMENT (symbolP, scommon_section);
495 break;
496
497 case AREA_ZDA:
498 if (zcommon_section == NULL)
499 {
500 flagword applicable;
501
502 applicable = bfd_applicable_section_flags (stdoutput);
503
504 zcommon_section = subseg_new (".zcommon", 0);
505
506 bfd_set_section_flags (stdoutput, zcommon_section, applicable
507 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
508 | SEC_HAS_CONTENTS) | SEC_IS_COMMON);
509 }
510 S_SET_SEGMENT (symbolP, zcommon_section);
511 break;
512
513 case AREA_TDA:
514 if (tcommon_section == NULL)
515 {
516 flagword applicable;
517
518 applicable = bfd_applicable_section_flags (stdoutput);
519
520 tcommon_section = subseg_new (".tcommon", 0);
521
522 bfd_set_section_flags (stdoutput, tcommon_section, applicable
523 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
524 | SEC_HAS_CONTENTS) | SEC_IS_COMMON);
525 }
526 S_SET_SEGMENT (symbolP, tcommon_section);
527 break;
528
529 default:
530 abort();
531 }
532 }
533 }
534 else
535 {
536 input_line_pointer++;
537 /* @@ Some use the dot, some don't. Can we get some consistency?? */
538 if (*input_line_pointer == '.')
539 input_line_pointer++;
540 /* @@ Some say data, some say bss. */
541 if (strncmp (input_line_pointer, "bss\"", 4)
542 && strncmp (input_line_pointer, "data\"", 5))
543 {
544 while (*--input_line_pointer != '"')
545 ;
546 input_line_pointer--;
547 goto bad_common_segment;
548 }
549 while (*input_line_pointer++ != '"')
550 ;
551 goto allocate_common;
552 }
553
554 symbolP->bsym->flags |= BSF_OBJECT;
555
556 demand_empty_rest_of_line ();
557 return;
558
559 {
560 bad_common_segment:
561 p = input_line_pointer;
562 while (*p && *p != '\n')
563 p++;
564 c = *p;
565 *p = '\0';
566 as_bad (_("bad .common segment %s"), input_line_pointer + 1);
567 *p = c;
568 input_line_pointer = p;
569 ignore_rest_of_line ();
570 return;
571 }
572 }
573
574 void
575 set_machine (int number)
576 {
577 machine = number;
578 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
579
580 switch (machine)
581 {
582 case 0: processor_mask = PROCESSOR_V850; break;
583 /* start-sanitize-v850e */
584 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
585 case bfd_mach_v850ea: processor_mask = PROCESSOR_V850EA; break;
586 /* end-sanitize-v850e */
587 }
588 }
589
590 /* The target specific pseudo-ops which we support. */
591 const pseudo_typeS md_pseudo_table[] =
592 {
593 {"sdata", v850_sdata, 0},
594 {"tdata", v850_tdata, 0},
595 {"zdata", v850_zdata, 0},
596 {"sbss", v850_sbss, 0},
597 {"tbss", v850_tbss, 0},
598 {"zbss", v850_zbss, 0},
599 {"rosdata", v850_rosdata, 0},
600 {"rozdata", v850_rozdata, 0},
601 {"bss", v850_bss, 0},
602 {"offset", v850_offset, 0},
603 {"word", cons, 4},
604 {"zcomm", v850_comm, AREA_ZDA},
605 {"scomm", v850_comm, AREA_SDA},
606 {"tcomm", v850_comm, AREA_TDA},
607 {"v850", set_machine, 0},
608 /* start-sanitize-v850e */
609 {"call_table_data", v850_call_table_data, 0},
610 {"call_table_text", v850_call_table_text, 0},
611 {"v850e", set_machine, bfd_mach_v850e},
612 {"v850ea", set_machine, bfd_mach_v850ea},
613 /* end-sanitize-v850e */
614 { NULL, NULL, 0}
615 };
616
617 /* Opcode hash table. */
618 static struct hash_control *v850_hash;
619
620 /* This table is sorted. Suitable for searching by a binary search. */
621 static const struct reg_name pre_defined_registers[] =
622 {
623 { "ep", 30 }, /* ep - element ptr */
624 { "gp", 4 }, /* gp - global ptr */
625 { "hp", 2 }, /* hp - handler stack ptr */
626 { "lp", 31 }, /* lp - link ptr */
627 { "r0", 0 },
628 { "r1", 1 },
629 { "r10", 10 },
630 { "r11", 11 },
631 { "r12", 12 },
632 { "r13", 13 },
633 { "r14", 14 },
634 { "r15", 15 },
635 { "r16", 16 },
636 { "r17", 17 },
637 { "r18", 18 },
638 { "r19", 19 },
639 { "r2", 2 },
640 { "r20", 20 },
641 { "r21", 21 },
642 { "r22", 22 },
643 { "r23", 23 },
644 { "r24", 24 },
645 { "r25", 25 },
646 { "r26", 26 },
647 { "r27", 27 },
648 { "r28", 28 },
649 { "r29", 29 },
650 { "r3", 3 },
651 { "r30", 30 },
652 { "r31", 31 },
653 { "r4", 4 },
654 { "r5", 5 },
655 { "r6", 6 },
656 { "r7", 7 },
657 { "r8", 8 },
658 { "r9", 9 },
659 { "sp", 3 }, /* sp - stack ptr */
660 { "tp", 5 }, /* tp - text ptr */
661 { "zero", 0 },
662 };
663 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
664
665
666 static const struct reg_name system_registers[] =
667 {
668 /* start-sanitize-v850e */
669 { "ctbp", 20 },
670 { "ctpc", 16 },
671 { "ctpsw", 17 },
672 { "dbpc", 18 },
673 { "dbpsw", 19 },
674 /* end-sanitize-v850e */
675 { "ecr", 4 },
676 { "eipc", 0 },
677 { "eipsw", 1 },
678 { "fepc", 2 },
679 { "fepsw", 3 },
680 { "psw", 5 },
681 };
682 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
683
684 /* start-sanitize-v850e */
685 static const struct reg_name system_list_registers[] =
686 {
687 {"PS", 5 },
688 {"SR", 0 + 1}
689 };
690 #define SYSREGLIST_NAME_CNT (sizeof (system_list_registers) / sizeof (struct reg_name))
691 /* end-sanitize-v850e */
692
693 static const struct reg_name cc_names[] =
694 {
695 { "c", 0x1 },
696 { "e", 0x2 },
697 { "ge", 0xe },
698 { "gt", 0xf },
699 { "h", 0xb },
700 { "l", 0x1 },
701 { "le", 0x7 },
702 { "lt", 0x6 },
703 { "n", 0x4 },
704 { "nc", 0x9 },
705 { "ne", 0xa },
706 { "nh", 0x3 },
707 { "nl", 0x9 },
708 { "ns", 0xc },
709 { "nv", 0x8 },
710 { "nz", 0xa },
711 { "p", 0xc },
712 { "s", 0x4 },
713 { "sa", 0xd },
714 { "t", 0x5 },
715 { "v", 0x0 },
716 { "z", 0x2 },
717 };
718 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
719
720 /* reg_name_search does a binary search of the given register table
721 to see if "name" is a valid regiter name. Returns the register
722 number from the array on success, or -1 on failure. */
723
724 static int
725 reg_name_search (regs, regcount, name, accept_numbers)
726 const struct reg_name * regs;
727 int regcount;
728 const char * name;
729 boolean accept_numbers;
730 {
731 int middle, low, high;
732 int cmp;
733 symbolS * symbolP;
734
735 /* If the register name is a symbol, then evaluate it. */
736 if ((symbolP = symbol_find (name)) != NULL)
737 {
738 /* If the symbol is an alias for another name then use that.
739 If the symbol is an alias for a number, then return the number. */
740 if (symbolP->sy_value.X_op == O_symbol)
741 {
742 name = S_GET_NAME (symbolP->sy_value.X_add_symbol);
743 }
744 else if (accept_numbers)
745 {
746 int reg = S_GET_VALUE (symbolP);
747
748 if (reg >= 0 && reg <= 31)
749 return reg;
750 }
751 }
752
753 low = 0;
754 high = regcount - 1;
755
756 do
757 {
758 middle = (low + high) / 2;
759 cmp = strcasecmp (name, regs[middle].name);
760 if (cmp < 0)
761 high = middle - 1;
762 else if (cmp > 0)
763 low = middle + 1;
764 else
765 return regs[middle].value;
766 }
767 while (low <= high);
768 return -1;
769 }
770
771
772 /* Summary of register_name().
773 *
774 * in: Input_line_pointer points to 1st char of operand.
775 *
776 * out: A expressionS.
777 * The operand may have been a register: in this case, X_op == O_register,
778 * X_add_number is set to the register number, and truth is returned.
779 * Input_line_pointer->(next non-blank) char after operand, or is in
780 * its original state.
781 */
782 static boolean
783 register_name (expressionP)
784 expressionS * expressionP;
785 {
786 int reg_number;
787 char * name;
788 char * start;
789 char c;
790
791 /* Find the spelling of the operand */
792 start = name = input_line_pointer;
793
794 c = get_symbol_end ();
795
796 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT,
797 name, FALSE);
798
799 * input_line_pointer = c; /* put back the delimiting char */
800
801 /* look to see if it's in the register table */
802 if (reg_number >= 0)
803 {
804 expressionP->X_op = O_register;
805 expressionP->X_add_number = reg_number;
806
807 /* make the rest nice */
808 expressionP->X_add_symbol = NULL;
809 expressionP->X_op_symbol = NULL;
810
811 return true;
812 }
813 else
814 {
815 /* reset the line as if we had not done anything */
816 input_line_pointer = start;
817
818 return false;
819 }
820 }
821
822 /* Summary of system_register_name().
823 *
824 * in: Input_line_pointer points to 1st char of operand.
825 * expressionP points to an expression structure to be filled in.
826 * accept_numbers is true iff numerical register names may be used.
827 * start-sanitize-v850e
828 * accept_list_names is true iff the special names PS and SR may be
829 * accepted.
830 * end-sanitize-v850e
831 *
832 * out: A expressionS structure in expressionP.
833 * The operand may have been a register: in this case, X_op == O_register,
834 * X_add_number is set to the register number, and truth is returned.
835 * Input_line_pointer->(next non-blank) char after operand, or is in
836 * its original state.
837 */
838 static boolean
839 system_register_name (expressionP, accept_numbers
840 /* start-sanitize-v850e */
841 , accept_list_names
842 /* end-sanitize-v850e */
843 )
844 expressionS * expressionP;
845 boolean accept_numbers;
846 /* start-sanitize-v850e */
847 boolean accept_list_names;
848 /* end-sanitize-v850e */
849 {
850 int reg_number;
851 char * name;
852 char * start;
853 char c;
854
855 /* Find the spelling of the operand */
856 start = name = input_line_pointer;
857
858 c = get_symbol_end ();
859 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name,
860 accept_numbers);
861
862 * input_line_pointer = c; /* put back the delimiting char */
863
864 if (reg_number < 0
865 && accept_numbers)
866 {
867 input_line_pointer = start; /* reset input_line pointer */
868
869 if (isdigit (* input_line_pointer))
870 {
871 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
872
873 /* Make sure that the register number is allowable. */
874 if ( reg_number < 0
875 || reg_number > 5
876 /* start-sanitize-v850e */
877 && reg_number < 16
878 || reg_number > 20
879 /* end-sanitize-v850e */
880 )
881 {
882 reg_number = -1;
883 }
884 }
885 /* start-sanitize-v850e */
886 else if (accept_list_names)
887 {
888 c = get_symbol_end ();
889 reg_number = reg_name_search (system_list_registers,
890 SYSREGLIST_NAME_CNT, name, FALSE);
891
892 * input_line_pointer = c; /* put back the delimiting char */
893 }
894 /* end-sanitize-v850e */
895 }
896
897 /* look to see if it's in the register table */
898 if (reg_number >= 0)
899 {
900 expressionP->X_op = O_register;
901 expressionP->X_add_number = reg_number;
902
903 /* make the rest nice */
904 expressionP->X_add_symbol = NULL;
905 expressionP->X_op_symbol = NULL;
906
907 return true;
908 }
909 else
910 {
911 /* reset the line as if we had not done anything */
912 input_line_pointer = start;
913
914 return false;
915 }
916 }
917
918 /* Summary of cc_name().
919 *
920 * in: Input_line_pointer points to 1st char of operand.
921 *
922 * out: A expressionS.
923 * The operand may have been a register: in this case, X_op == O_register,
924 * X_add_number is set to the register number, and truth is returned.
925 * Input_line_pointer->(next non-blank) char after operand, or is in
926 * its original state.
927 */
928 static boolean
929 cc_name (expressionP)
930 expressionS * expressionP;
931 {
932 int reg_number;
933 char * name;
934 char * start;
935 char c;
936
937 /* Find the spelling of the operand */
938 start = name = input_line_pointer;
939
940 c = get_symbol_end ();
941 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE);
942
943 * input_line_pointer = c; /* put back the delimiting char */
944
945 /* look to see if it's in the register table */
946 if (reg_number >= 0)
947 {
948 expressionP->X_op = O_constant;
949 expressionP->X_add_number = reg_number;
950
951 /* make the rest nice */
952 expressionP->X_add_symbol = NULL;
953 expressionP->X_op_symbol = NULL;
954
955 return true;
956 }
957 else
958 {
959 /* reset the line as if we had not done anything */
960 input_line_pointer = start;
961
962 return false;
963 }
964 }
965
966 static void
967 skip_white_space (void)
968 {
969 while ( * input_line_pointer == ' '
970 || * input_line_pointer == '\t')
971 ++ input_line_pointer;
972 }
973
974 /* start-sanitize-v850e */
975 /* Summary of parse_register_list ().
976 *
977 * in: Input_line_pointer points to 1st char of a list of registers.
978 * insn is the partially constructed instruction.
979 * operand is the operand being inserted.
980 *
981 * out: NULL if the parse completed successfully, otherwise a
982 * pointer to an error message is returned. If the parse
983 * completes the correct bit fields in the instruction
984 * will be filled in.
985 *
986 * Parses register lists with the syntax:
987 *
988 * { rX }
989 * { rX, rY }
990 * { rX - rY }
991 * { rX - rY, rZ }
992 * etc
993 *
994 * and also parses constant epxressions whoes bits indicate the
995 * registers in the lists. The LSB in the expression refers to
996 * the lowest numbered permissable register in the register list,
997 * and so on upwards. System registers are considered to be very
998 * high numbers.
999 *
1000 */
1001 static char *
1002 parse_register_list
1003 (
1004 unsigned long * insn,
1005 const struct v850_operand * operand
1006 )
1007 {
1008 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 };
1009 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 };
1010 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 };
1011 int * regs;
1012 expressionS exp;
1013
1014
1015 /* Select a register array to parse. */
1016 switch (operand->shift)
1017 {
1018 case 0xffe00001: regs = type1_regs; break;
1019 case 0xfff8000f: regs = type2_regs; break;
1020 case 0xfff8001f: regs = type3_regs; break;
1021 default:
1022 as_bad (_("unknown operand shift: %x\n"), operand->shift );
1023 return _("internal failure in parse_register_list");
1024 }
1025
1026 skip_white_space();
1027
1028 /* If the expression starts with a curly brace it is a register list.
1029 Otherwise it is a constant expression, whoes bits indicate which
1030 registers are to be included in the list. */
1031
1032 if (* input_line_pointer != '{')
1033 {
1034 int bits;
1035 int reg;
1036 int i;
1037
1038 expression (& exp);
1039
1040 if (exp.X_op != O_constant)
1041 return _("constant expression or register list expected");
1042
1043 if (regs == type1_regs)
1044 {
1045 if (exp.X_add_number & 0xFFFFF000)
1046 return _("high bits set in register list expression");
1047
1048 for (reg = 20; reg < 32; reg ++)
1049 if (exp.X_add_number & (1 << (reg - 20)))
1050 {
1051 for (i = 0; i < 32; i++)
1052 if (regs[i] == reg)
1053 * insn |= (1 << i);
1054 }
1055 }
1056 else if (regs == type2_regs)
1057 {
1058 if (exp.X_add_number & 0xFFFE0000)
1059 return _("high bits set in register list expression");
1060
1061 for (reg = 1; reg < 16; reg ++)
1062 if (exp.X_add_number & (1 << (reg - 1)))
1063 {
1064 for (i = 0; i < 32; i++)
1065 if (regs[i] == reg)
1066 * insn |= (1 << i);
1067 }
1068
1069 if (exp.X_add_number & (1 << 15))
1070 * insn |= (1 << 3);
1071
1072 if (exp.X_add_number & (1 << 16))
1073 * insn |= (1 << 19);
1074 }
1075 else /* regs == type3_regs */
1076 {
1077 if (exp.X_add_number & 0xFFFE0000)
1078 return _("high bits set in register list expression");
1079
1080 for (reg = 16; reg < 32; reg ++)
1081 if (exp.X_add_number & (1 << (reg - 16)))
1082 {
1083 for (i = 0; i < 32; i++)
1084 if (regs[i] == reg)
1085 * insn |= (1 << i);
1086 }
1087
1088 if (exp.X_add_number & (1 << 16))
1089 * insn |= (1 << 19);
1090 }
1091
1092 return NULL;
1093 }
1094
1095 input_line_pointer ++;
1096
1097 /* Parse the register list until a terminator (closing curly brace or
1098 new-line) is found. */
1099 for (;;)
1100 {
1101 if (register_name (& exp))
1102 {
1103 int i;
1104
1105 /* Locate the given register in the list, and if it is there,
1106 insert the corresponding bit into the instruction. */
1107 for (i = 0; i < 32; i++)
1108 {
1109 if (regs[ i ] == exp.X_add_number)
1110 {
1111 * insn |= (1 << i);
1112 break;
1113 }
1114 }
1115
1116 if (i == 32)
1117 {
1118 return _("illegal register included in list");
1119 }
1120 }
1121 else if (system_register_name (& exp, true, true))
1122 {
1123 if (regs == type1_regs)
1124 {
1125 return _("system registers cannot be included in list");
1126 }
1127 else if (exp.X_add_number == 5)
1128 {
1129 if (regs == type2_regs)
1130 return _("PSW cannot be included in list");
1131 else
1132 * insn |= 0x8;
1133 }
1134 else if (exp.X_add_number < 4)
1135 * insn |= 0x80000;
1136 else
1137 return _("High value system registers cannot be included in list");
1138 }
1139 else if (* input_line_pointer == '}')
1140 {
1141 input_line_pointer ++;
1142 break;
1143 }
1144 else if (* input_line_pointer == ',')
1145 {
1146 input_line_pointer ++;
1147 continue;
1148 }
1149 else if (* input_line_pointer == '-')
1150 {
1151 /* We have encountered a range of registers: rX - rY */
1152 int j;
1153 expressionS exp2;
1154
1155 /* Skip the dash. */
1156 ++ input_line_pointer;
1157
1158 /* Get the second register in the range. */
1159 if (! register_name (& exp2))
1160 {
1161 return _("second register should follow dash in register list");
1162 exp2.X_add_number = exp.X_add_number;
1163 }
1164
1165 /* Add the rest of the registers in the range. */
1166 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
1167 {
1168 int i;
1169
1170 /* Locate the given register in the list, and if it is there,
1171 insert the corresponding bit into the instruction. */
1172 for (i = 0; i < 32; i++)
1173 {
1174 if (regs[ i ] == j)
1175 {
1176 * insn |= (1 << i);
1177 break;
1178 }
1179 }
1180
1181 if (i == 32)
1182 return _("illegal register included in list");
1183 }
1184 }
1185 else
1186 {
1187 break;
1188 }
1189
1190 skip_white_space ();
1191 }
1192
1193 return NULL;
1194 }
1195 /* end-sanitize-v850e */
1196
1197 CONST char * md_shortopts = "m:";
1198
1199 struct option md_longopts[] =
1200 {
1201 {NULL, no_argument, NULL, 0}
1202 };
1203 size_t md_longopts_size = sizeof md_longopts;
1204
1205
1206 void
1207 md_show_usage (stream)
1208 FILE * stream;
1209 {
1210 fprintf (stream, _(" V850 options:\n"));
1211 fprintf (stream, _(" -mwarn-signed-overflow Warn if signed immediate values overflow\n"));
1212 fprintf (stream, _(" -mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n"));
1213 fprintf (stream, _(" -mv850 The code is targeted at the v850\n"));
1214 /* start-sanitize-v850e */
1215 fprintf (stream, _(" -mv850e The code is targeted at the v850e\n"));
1216 fprintf (stream, _(" -mv850ea The code is targeted at the v850ea\n"));
1217 fprintf (stream, _(" -mv850any The code is generic, despite any processor specific instructions\n"));
1218 /* end-sanitize-v850e */
1219 }
1220
1221 int
1222 md_parse_option (c, arg)
1223 int c;
1224 char * arg;
1225 {
1226 if (c != 'm')
1227 {
1228 /* xgettext:c-format */
1229 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1230 return 0;
1231 }
1232
1233 if (strcmp (arg, "warn-signed-overflow") == 0)
1234 {
1235 warn_signed_overflows = TRUE;
1236 }
1237 else if (strcmp (arg, "warn-unsigned-overflow") == 0)
1238 {
1239 warn_unsigned_overflows = TRUE;
1240 }
1241 else if (strcmp (arg, "v850") == 0)
1242 {
1243 machine = 0;
1244 processor_mask = PROCESSOR_V850;
1245 }
1246 /* start-sanitize-v850e */
1247 else if (strcmp (arg, "v850e") == 0)
1248 {
1249 machine = bfd_mach_v850e;
1250 processor_mask = PROCESSOR_V850E;
1251 }
1252 else if (strcmp (arg, "v850ea") == 0)
1253 {
1254 machine = bfd_mach_v850ea;
1255 processor_mask = PROCESSOR_V850EA;
1256 }
1257 else if (strcmp (arg, "v850any") == 0)
1258 {
1259 machine = 0; /* Tell the world that this is for any v850 chip. */
1260 processor_mask = PROCESSOR_V850EA; /* But support instructions for the extended versions. */
1261 }
1262 /* end-sanitize-v850e */
1263 else
1264 {
1265 /* xgettext:c-format */
1266 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1267 return 0;
1268 }
1269
1270 return 1;
1271 }
1272
1273 symbolS *
1274 md_undefined_symbol (name)
1275 char * name;
1276 {
1277 return 0;
1278 }
1279
1280 char *
1281 md_atof (type, litp, sizep)
1282 int type;
1283 char * litp;
1284 int * sizep;
1285 {
1286 int prec;
1287 LITTLENUM_TYPE words[4];
1288 char * t;
1289 int i;
1290
1291 switch (type)
1292 {
1293 case 'f':
1294 prec = 2;
1295 break;
1296
1297 case 'd':
1298 prec = 4;
1299 break;
1300
1301 default:
1302 *sizep = 0;
1303 return _("bad call to md_atof");
1304 }
1305
1306 t = atof_ieee (input_line_pointer, type, words);
1307 if (t)
1308 input_line_pointer = t;
1309
1310 *sizep = prec * 2;
1311
1312 for (i = prec - 1; i >= 0; i--)
1313 {
1314 md_number_to_chars (litp, (valueT) words[i], 2);
1315 litp += 2;
1316 }
1317
1318 return NULL;
1319 }
1320
1321
1322 /* Very gross. */
1323 void
1324 md_convert_frag (abfd, sec, fragP)
1325 bfd * abfd;
1326 asection * sec;
1327 fragS * fragP;
1328 {
1329 subseg_change (sec, 0);
1330
1331 /* In range conditional or unconditional branch. */
1332 if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2)
1333 {
1334 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
1335 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
1336 fragP->fr_var = 0;
1337 fragP->fr_fix += 2;
1338 }
1339 /* Out of range conditional branch. Emit a branch around a jump. */
1340 else if (fragP->fr_subtype == 1)
1341 {
1342 unsigned char *buffer =
1343 (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
1344
1345 /* Reverse the condition of the first branch. */
1346 buffer[0] ^= 0x08;
1347 /* Mask off all the displacement bits. */
1348 buffer[0] &= 0x8f;
1349 buffer[1] &= 0x07;
1350 /* Now set the displacement bits so that we branch
1351 around the unconditional branch. */
1352 buffer[0] |= 0x30;
1353
1354 /* Now create the unconditional branch + fixup to the final
1355 target. */
1356 md_number_to_chars (buffer + 2, 0x00000780, 4);
1357 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
1358 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1359 + 1);
1360 fragP->fr_var = 0;
1361 fragP->fr_fix += 6;
1362 }
1363 /* Out of range unconditional branch. Emit a jump. */
1364 else if (fragP->fr_subtype == 3)
1365 {
1366 md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4);
1367 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
1368 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1369 + 1);
1370 fragP->fr_var = 0;
1371 fragP->fr_fix += 4;
1372 }
1373 else
1374 abort ();
1375 }
1376
1377 valueT
1378 md_section_align (seg, addr)
1379 asection * seg;
1380 valueT addr;
1381 {
1382 int align = bfd_get_section_alignment (stdoutput, seg);
1383 return ((addr + (1 << align) - 1) & (-1 << align));
1384 }
1385
1386 void
1387 md_begin ()
1388 {
1389 char * prev_name = "";
1390 register const struct v850_opcode * op;
1391 flagword applicable;
1392
1393 /* start-sanitize-v850e */
1394 if (strncmp (TARGET_CPU, "v850ea", 6) == 0)
1395 {
1396 if (machine == -1)
1397 machine = bfd_mach_v850ea;
1398
1399 if (processor_mask == -1)
1400 processor_mask = PROCESSOR_V850EA;
1401 }
1402 else if (strncmp (TARGET_CPU, "v850e", 5) == 0)
1403 {
1404 if (machine == -1)
1405 machine = bfd_mach_v850e;
1406
1407 if (processor_mask == -1)
1408 processor_mask = PROCESSOR_V850E;
1409 }
1410 else
1411 /* end-sanitize-v850e */
1412 if (strncmp (TARGET_CPU, "v850", 4) == 0)
1413 {
1414 if (machine == -1)
1415 machine = 0;
1416
1417 if (processor_mask == -1)
1418 processor_mask = PROCESSOR_V850;
1419 }
1420 else
1421 /* xgettext:c-format */
1422 as_bad (_("Unable to determine default target processor from string: %s"),
1423 TARGET_CPU);
1424
1425 v850_hash = hash_new();
1426
1427 /* Insert unique names into hash table. The V850 instruction set
1428 has many identical opcode names that have different opcodes based
1429 on the operands. This hash table then provides a quick index to
1430 the first opcode with a particular name in the opcode table. */
1431
1432 op = v850_opcodes;
1433 while (op->name)
1434 {
1435 if (strcmp (prev_name, op->name))
1436 {
1437 prev_name = (char *) op->name;
1438 hash_insert (v850_hash, op->name, (char *) op);
1439 }
1440 op++;
1441 }
1442
1443 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1444
1445 /* start-sanitize-v850e */
1446 call_table_data_section = subseg_new (".call_table_data", 0);
1447 bfd_set_section_flags (stdoutput, call_table_data_section,
1448 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1449 | SEC_DATA | SEC_HAS_CONTENTS));
1450
1451 call_table_text_section = subseg_new (".call_table_text", 0);
1452 bfd_set_section_flags (stdoutput, call_table_text_section,
1453 applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE));
1454
1455 /* Restore text section as the current default. */
1456 subseg_set (text_section, 0);
1457 /* end-sanitize-v850e */
1458
1459 }
1460
1461
1462 /* start-sanitize-v850e */
1463 static bfd_reloc_code_real_type
1464 handle_ctoff (const struct v850_operand * operand)
1465 {
1466 if (operand == NULL)
1467 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1468
1469 if ( operand->bits != 6
1470 || operand->shift != 0)
1471 {
1472 as_bad (_("ctoff() relocation used on an instruction which does not support it"));
1473 return BFD_RELOC_64; /* Used to indicate an error condition. */
1474 }
1475
1476 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1477 }
1478 /* end-sanitize-v850e */
1479
1480 static bfd_reloc_code_real_type
1481 handle_sdaoff (const struct v850_operand * operand)
1482 {
1483 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1484 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1485 /* start-sanitize-v850e */
1486 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1487 /* end-sanitize-v850e */
1488
1489 if ( operand->bits != 16
1490 || operand->shift != 16)
1491 {
1492 as_bad (_("sdaoff() relocation used on an instruction which does not support it"));
1493 return BFD_RELOC_64; /* Used to indicate an error condition. */
1494 }
1495
1496 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1497 }
1498
1499 static bfd_reloc_code_real_type
1500 handle_zdaoff (const struct v850_operand * operand)
1501 {
1502 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1503 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1504 /* start-sanitize-v850e */
1505 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1506 /* end-sanitize-v850e */
1507
1508 if ( operand->bits != 16
1509 || operand->shift != 16)
1510 {
1511 as_bad (_("zdaoff() relocation used on an instruction which does not support it"));
1512 return BFD_RELOC_64; /* Used to indicate an error condition. */
1513 }
1514
1515 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1516 }
1517
1518 static bfd_reloc_code_real_type
1519 handle_tdaoff (const struct v850_operand * operand)
1520 {
1521 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1522 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1523 /* start-sanitize-v850e */
1524 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1525 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1526 /* end-sanitize-v850e */
1527 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1528
1529 if (operand->bits != 7)
1530 {
1531 as_bad (_("tdaoff() relocation used on an instruction which does not support it"));
1532 return BFD_RELOC_64; /* Used to indicate an error condition. */
1533 }
1534
1535 return operand->insert != NULL
1536 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1537 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1538 }
1539
1540 /* Warning: The code in this function relies upon the definitions
1541 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1542 matching the hard coded values contained herein. */
1543
1544 static bfd_reloc_code_real_type
1545 v850_reloc_prefix (const struct v850_operand * operand)
1546 {
1547 boolean paren_skipped = false;
1548
1549
1550 /* Skip leading opening parenthesis. */
1551 if (* input_line_pointer == '(')
1552 {
1553 ++ input_line_pointer;
1554 paren_skipped = true;
1555 }
1556
1557 #define CHECK_(name, reloc) \
1558 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1559 { \
1560 input_line_pointer += strlen (name); \
1561 return reloc; \
1562 }
1563
1564 CHECK_ ("hi0", BFD_RELOC_HI16);
1565 CHECK_ ("hi", BFD_RELOC_HI16_S);
1566 CHECK_ ("lo", BFD_RELOC_LO16);
1567 CHECK_ ("sdaoff", handle_sdaoff (operand));
1568 CHECK_ ("zdaoff", handle_zdaoff (operand));
1569 CHECK_ ("tdaoff", handle_tdaoff (operand));
1570
1571 /* start-sanitize-v850e */
1572 CHECK_ ("hilo", BFD_RELOC_32);
1573 CHECK_ ("ctoff", handle_ctoff (operand));
1574 /* end-sanitize-v850e */
1575
1576 /* Restore skipped parenthesis. */
1577 if (paren_skipped)
1578 -- input_line_pointer;
1579
1580 return BFD_RELOC_UNUSED;
1581 }
1582
1583 /* Insert an operand value into an instruction. */
1584
1585 static unsigned long
1586 v850_insert_operand (insn, operand, val, file, line, str)
1587 unsigned long insn;
1588 const struct v850_operand * operand;
1589 offsetT val;
1590 char * file;
1591 unsigned int line;
1592 char * str;
1593 {
1594 if (operand->insert)
1595 {
1596 const char * message = NULL;
1597
1598 insn = operand->insert (insn, val, & message);
1599 if (message != NULL)
1600 {
1601 if ((operand->flags & V850_OPERAND_SIGNED)
1602 && ! warn_signed_overflows
1603 && strstr (message, "out of range") != NULL)
1604 {
1605 /* skip warning... */
1606 }
1607 else if ((operand->flags & V850_OPERAND_SIGNED) == 0
1608 && ! warn_unsigned_overflows
1609 && strstr (message, "out of range") != NULL)
1610 {
1611 /* skip warning... */
1612 }
1613 else if (str)
1614 {
1615 if (file == (char *) NULL)
1616 as_warn ("%s: %s", str, message);
1617 else
1618 as_warn_where (file, line, "%s: %s", str, message);
1619 }
1620 else
1621 {
1622 if (file == (char *) NULL)
1623 as_warn (message);
1624 else
1625 as_warn_where (file, line, message);
1626 }
1627 }
1628 }
1629 else
1630 {
1631 if (operand->bits != 32)
1632 {
1633 long min, max;
1634 offsetT test;
1635
1636 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1637 {
1638 if (! warn_signed_overflows)
1639 max = (1 << operand->bits) - 1;
1640 else
1641 max = (1 << (operand->bits - 1)) - 1;
1642
1643 min = - (1 << (operand->bits - 1));
1644 }
1645 else
1646 {
1647 max = (1 << operand->bits) - 1;
1648
1649 if (! warn_unsigned_overflows)
1650 min = - (1 << (operand->bits - 1));
1651 else
1652 min = 0;
1653 }
1654
1655 if (val < (offsetT) min || val > (offsetT) max)
1656 {
1657 /* xgettext:c-format */
1658 const char * err = _("operand out of range (%s not between %ld and %ld)");
1659 char buf[100];
1660
1661 /* Restore min and mix to expected values for decimal ranges. */
1662 if ((operand->flags & V850_OPERAND_SIGNED)
1663 && ! warn_signed_overflows)
1664 max = (1 << (operand->bits - 1)) - 1;
1665
1666 if (! (operand->flags & V850_OPERAND_SIGNED)
1667 && ! warn_unsigned_overflows)
1668 min = 0;
1669
1670 if (str)
1671 {
1672 sprintf (buf, "%s: ", str);
1673
1674 sprint_value (buf + strlen (buf), val);
1675 }
1676 else
1677 sprint_value (buf, val);
1678
1679 if (file == (char *) NULL)
1680 as_warn (err, buf, min, max);
1681 else
1682 as_warn_where (file, line, err, buf, min, max);
1683 }
1684 }
1685
1686 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1687 }
1688
1689 return insn;
1690 }
1691
1692 \f
1693 static char copy_of_instruction [128];
1694
1695 void
1696 md_assemble (str)
1697 char * str;
1698 {
1699 char * s;
1700 char * start_of_operands;
1701 struct v850_opcode * opcode;
1702 struct v850_opcode * next_opcode;
1703 const unsigned char * opindex_ptr;
1704 int next_opindex;
1705 int relaxable;
1706 unsigned long insn;
1707 unsigned long insn_size;
1708 char * f;
1709 int i;
1710 int match;
1711 boolean extra_data_after_insn = false;
1712 unsigned extra_data_len;
1713 unsigned long extra_data;
1714 char * saved_input_line_pointer;
1715
1716
1717 strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1);
1718
1719 /* Get the opcode. */
1720 for (s = str; *s != '\0' && ! isspace (*s); s++)
1721 continue;
1722
1723 if (*s != '\0')
1724 *s++ = '\0';
1725
1726 /* find the first opcode with the proper name */
1727 opcode = (struct v850_opcode *) hash_find (v850_hash, str);
1728 if (opcode == NULL)
1729 {
1730 /* xgettext:c-format */
1731 as_bad (_("Unrecognized opcode: `%s'"), str);
1732 ignore_rest_of_line ();
1733 return;
1734 }
1735
1736 str = s;
1737 while (isspace (* str))
1738 ++ str;
1739
1740 start_of_operands = str;
1741
1742 saved_input_line_pointer = input_line_pointer;
1743
1744 for (;;)
1745 {
1746 const char * errmsg = NULL;
1747
1748 match = 0;
1749
1750 if ((opcode->processors & processor_mask) == 0)
1751 {
1752 errmsg = _("Target processor does not support this instruction.");
1753 goto error;
1754 }
1755
1756 relaxable = 0;
1757 fc = 0;
1758 next_opindex = 0;
1759 insn = opcode->opcode;
1760 extra_data_after_insn = false;
1761
1762 input_line_pointer = str = start_of_operands;
1763
1764 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr ++)
1765 {
1766 const struct v850_operand * operand;
1767 char * hold;
1768 expressionS ex;
1769 bfd_reloc_code_real_type reloc;
1770
1771 if (next_opindex == 0)
1772 {
1773 operand = & v850_operands[ * opindex_ptr ];
1774 }
1775 else
1776 {
1777 operand = & v850_operands[ next_opindex ];
1778 next_opindex = 0;
1779 }
1780
1781 errmsg = NULL;
1782
1783 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1784 ++ str;
1785
1786 if (operand->flags & V850_OPERAND_RELAX)
1787 relaxable = 1;
1788
1789 /* Gather the operand. */
1790 hold = input_line_pointer;
1791 input_line_pointer = str;
1792
1793 /* lo(), hi(), hi0(), etc... */
1794 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1795 {
1796 /* This is a fake reloc, used to indicate an error condition. */
1797 if (reloc == BFD_RELOC_64)
1798 {
1799 match = 1;
1800 goto error;
1801 }
1802
1803 expression (& ex);
1804
1805 if (ex.X_op == O_constant)
1806 {
1807 switch (reloc)
1808 {
1809 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1810 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]"
1811 and the like. */
1812 /* Fall through. */
1813
1814 case BFD_RELOC_LO16:
1815 {
1816 /* Truncate, then sign extend the value. */
1817 ex.X_add_number = SEXT16 (ex.X_add_number);
1818 break;
1819 }
1820
1821 case BFD_RELOC_HI16:
1822 {
1823 /* Truncate, then sign extend the value. */
1824 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1825 break;
1826 }
1827
1828 case BFD_RELOC_HI16_S:
1829 {
1830 /* Truncate, then sign extend the value. */
1831 int temp = (ex.X_add_number >> 16) & 0xffff;
1832
1833 temp += (ex.X_add_number >> 15) & 1;
1834
1835 ex.X_add_number = SEXT16 (temp);
1836 break;
1837 }
1838
1839 /* start-sanitize-v850e */
1840 case BFD_RELOC_32:
1841 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1842 {
1843 errmsg = _("immediate operand is too large");
1844 goto error;
1845 }
1846
1847 extra_data_after_insn = true;
1848 extra_data_len = 4;
1849 extra_data = ex.X_add_number;
1850 ex.X_add_number = 0;
1851 break;
1852 /* end-sanitize-v850e */
1853
1854 default:
1855 fprintf (stderr, "reloc: %d\n", reloc);
1856 as_bad (_("AAARG -> unhandled constant reloc"));
1857 break;
1858 }
1859
1860 if (fc > MAX_INSN_FIXUPS)
1861 as_fatal (_("too many fixups"));
1862
1863 fixups[ fc ].exp = ex;
1864 fixups[ fc ].opindex = * opindex_ptr;
1865 fixups[ fc ].reloc = reloc;
1866 fc++;
1867 }
1868 else
1869 {
1870 /* start-sanitize-v850e */
1871 if (reloc == BFD_RELOC_32)
1872 {
1873 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1874 {
1875 errmsg = _("immediate operand is too large");
1876 goto error;
1877 }
1878
1879 extra_data_after_insn = true;
1880 extra_data_len = 4;
1881 extra_data = ex.X_add_number;
1882 }
1883 /* end-sanitize-v850e */
1884
1885 if (fc > MAX_INSN_FIXUPS)
1886 as_fatal (_("too many fixups"));
1887
1888 fixups[ fc ].exp = ex;
1889 fixups[ fc ].opindex = * opindex_ptr;
1890 fixups[ fc ].reloc = reloc;
1891 fc++;
1892 }
1893 }
1894 else
1895 {
1896 errmsg = NULL;
1897
1898 if ((operand->flags & V850_OPERAND_REG) != 0)
1899 {
1900 if (!register_name (& ex))
1901 {
1902 errmsg = _("invalid register name");
1903 }
1904 else if ((operand->flags & V850_NOT_R0)
1905 && ex.X_add_number == 0)
1906 {
1907 errmsg = _("register r0 cannot be used here");
1908
1909 /* Force an error message to be generated by
1910 skipping over any following potential matches
1911 for this opcode. */
1912 opcode += 3;
1913 }
1914 }
1915 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1916 {
1917 if (!system_register_name (& ex, true
1918 /* start-sanitize-v850e */
1919 , false
1920 /* end-sanitize-v850e */
1921 ))
1922 {
1923 errmsg = _("invalid system register name");
1924 }
1925 }
1926 else if ((operand->flags & V850_OPERAND_EP) != 0)
1927 {
1928 char * start = input_line_pointer;
1929 char c = get_symbol_end ();
1930
1931 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1932 {
1933 /* Put things back the way we found them. */
1934 *input_line_pointer = c;
1935 input_line_pointer = start;
1936 errmsg = _("expected EP register");
1937 goto error;
1938 }
1939
1940 *input_line_pointer = c;
1941 str = input_line_pointer;
1942 input_line_pointer = hold;
1943
1944 while ( *str == ' ' || *str == ',' || *str == '['
1945 || *str == ']')
1946 ++ str;
1947 continue;
1948 }
1949 else if ((operand->flags & V850_OPERAND_CC) != 0)
1950 {
1951 if (!cc_name (& ex))
1952 {
1953 errmsg = _("invalid condition code name");
1954 }
1955 }
1956 /* start-sanitize-v850e */
1957 else if (operand->flags & V850E_PUSH_POP)
1958 {
1959 errmsg = parse_register_list (& insn, operand);
1960
1961 /* The parse_register_list() function has already done
1962 everything, so fake a dummy expression. */
1963 ex.X_op = O_constant;
1964 ex.X_add_number = 0;
1965 }
1966 else if (operand->flags & V850E_IMMEDIATE16)
1967 {
1968 expression (& ex);
1969
1970 if (ex.X_op != O_constant)
1971 errmsg = _("constant expression expected");
1972 else if (ex.X_add_number & 0xffff0000)
1973 {
1974 if (ex.X_add_number & 0xffff)
1975 errmsg = _("constant too big to fit into instruction");
1976 else if ((insn & 0x001fffc0) == 0x00130780)
1977 ex.X_add_number >>= 16;
1978 else
1979 errmsg = _("constant too big to fit into instruction");
1980 }
1981
1982 extra_data_after_insn = true;
1983 extra_data_len = 2;
1984 extra_data = ex.X_add_number;
1985 ex.X_add_number = 0;
1986 }
1987 else if (operand->flags & V850E_IMMEDIATE32)
1988 {
1989 expression (& ex);
1990
1991 if (ex.X_op != O_constant)
1992 errmsg = _("constant expression expected");
1993
1994 extra_data_after_insn = true;
1995 extra_data_len = 4;
1996 extra_data = ex.X_add_number;
1997 ex.X_add_number = 0;
1998 }
1999 /* end-sanitize-v850e */
2000 else if (register_name (& ex)
2001 && (operand->flags & V850_OPERAND_REG) == 0)
2002 {
2003 char c;
2004 int exists = 0;
2005
2006 /* It is possible that an alias has been defined that
2007 matches a register name. For example the code may
2008 include a ".set ZERO, 0" directive, which matches
2009 the register name "zero". Attempt to reparse the
2010 field as an expression, and only complain if we
2011 cannot generate a constant. */
2012
2013 input_line_pointer = str;
2014
2015 c = get_symbol_end();
2016
2017 if (symbol_find (str) != NULL)
2018 exists = 1;
2019
2020 * input_line_pointer = c;
2021 input_line_pointer = str;
2022
2023 expression (& ex);
2024
2025 if (ex.X_op != O_constant)
2026 {
2027 /* If this register is actually occuring too early on
2028 the parsing of the instruction, (because another
2029 field is missing) then report this. */
2030 if (opindex_ptr[1] != 0
2031 && (v850_operands [opindex_ptr [1]].flags & V850_OPERAND_REG))
2032 errmsg = _("syntax error: value is missing before the register name");
2033 else
2034 errmsg = _("syntax error: register not expected");
2035
2036 /* If we created a symbol in the process of this test then
2037 delete it now, so that it will not be output with the real
2038 symbols... */
2039 if (exists == 0
2040 && ex.X_op == O_symbol)
2041 symbol_remove (ex.X_add_symbol,
2042 & symbol_rootP, & symbol_lastP);
2043 }
2044 }
2045 else if (system_register_name (& ex, false
2046 /* start-sanitize-v850e */
2047 , false
2048 /* end-sanitize-v850e */
2049 )
2050 && (operand->flags & V850_OPERAND_SRG) == 0)
2051 {
2052 errmsg = _("syntax error: system register not expected");
2053 }
2054 else if (cc_name (&ex)
2055 && (operand->flags & V850_OPERAND_CC) == 0)
2056 {
2057 errmsg = _("syntax error: condition code not expected");
2058 }
2059 else
2060 {
2061 expression (& ex);
2062 /* start-sanitize-v850e */
2063 /* Special case:
2064 If we are assembling a MOV instruction (or a CALLT.... :-)
2065 and the immediate value does not fit into the bits
2066 available then create a fake error so that the next MOV
2067 instruction will be selected. This one has a 32 bit
2068 immediate field. */
2069
2070 if (((insn & 0x07e0) == 0x0200)
2071 && ex.X_op == O_constant
2072 && (ex.X_add_number < (- (1 << (operand->bits - 1)))
2073 || ex.X_add_number > ((1 << operand->bits) - 1)))
2074 errmsg = _("immediate operand is too large");
2075 /* end-sanitize-v850e */
2076 }
2077
2078 if (errmsg)
2079 goto error;
2080
2081 /* fprintf (stderr, " insn: %x, operand %d, op: %d, add_number: %d\n",
2082 insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number); */
2083
2084 switch (ex.X_op)
2085 {
2086 case O_illegal:
2087 errmsg = _("illegal operand");
2088 goto error;
2089 case O_absent:
2090 errmsg = _("missing operand");
2091 goto error;
2092 case O_register:
2093 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
2094 {
2095 errmsg = _("invalid operand");
2096 goto error;
2097 }
2098 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2099 (char *) NULL, 0,
2100 copy_of_instruction);
2101 break;
2102
2103 case O_constant:
2104 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2105 (char *) NULL, 0,
2106 copy_of_instruction);
2107 break;
2108
2109 default:
2110 /* We need to generate a fixup for this expression. */
2111 if (fc >= MAX_INSN_FIXUPS)
2112 as_fatal (_("too many fixups"));
2113
2114 fixups[ fc ].exp = ex;
2115 fixups[ fc ].opindex = * opindex_ptr;
2116 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
2117 ++fc;
2118 break;
2119 }
2120 }
2121
2122 str = input_line_pointer;
2123 input_line_pointer = hold;
2124
2125 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
2126 || *str == ')')
2127 ++str;
2128 }
2129 match = 1;
2130
2131 error:
2132 if (match == 0)
2133 {
2134 next_opcode = opcode + 1;
2135 if (next_opcode->name != NULL
2136 && strcmp (next_opcode->name, opcode->name) == 0)
2137 {
2138 opcode = next_opcode;
2139
2140 /* Skip versions that are not supported by the target
2141 processor. */
2142 if ((opcode->processors & processor_mask) == 0)
2143 goto error;
2144
2145 continue;
2146 }
2147
2148 as_bad ("%s: %s", copy_of_instruction, errmsg);
2149
2150 if (* input_line_pointer == ']')
2151 ++ input_line_pointer;
2152
2153 ignore_rest_of_line ();
2154 input_line_pointer = saved_input_line_pointer;
2155 return;
2156 }
2157 break;
2158 }
2159
2160 while (isspace (*str))
2161 ++str;
2162
2163 if (*str != '\0')
2164 /* xgettext:c-format */
2165 as_bad (_("junk at end of line: `%s'"), str);
2166
2167 input_line_pointer = str;
2168
2169 /* Write out the instruction. */
2170
2171 if (relaxable && fc > 0)
2172 {
2173 insn_size = 2;
2174 fc = 0;
2175
2176 if (!strcmp (opcode->name, "br"))
2177 {
2178 f = frag_var (rs_machine_dependent, 4, 2, 2,
2179 fixups[0].exp.X_add_symbol,
2180 fixups[0].exp.X_add_number,
2181 (char *)fixups[0].opindex);
2182 md_number_to_chars (f, insn, insn_size);
2183 md_number_to_chars (f + 2, 0, 2);
2184 }
2185 else
2186 {
2187 f = frag_var (rs_machine_dependent, 6, 4, 0,
2188 fixups[0].exp.X_add_symbol,
2189 fixups[0].exp.X_add_number,
2190 (char *)fixups[0].opindex);
2191 md_number_to_chars (f, insn, insn_size);
2192 md_number_to_chars (f + 2, 0, 4);
2193 }
2194 }
2195 else
2196 {
2197 /* Four byte insns have an opcode with the two high bits on. */
2198 if ((insn & 0x0600) == 0x0600)
2199 insn_size = 4;
2200 else
2201 insn_size = 2;
2202
2203 /* start-sanitize-v850e */
2204 /* Special case: 32 bit MOV */
2205 if ((insn & 0xffe0) == 0x0620)
2206 insn_size = 2;
2207 /* end-sanitize-v850e */
2208
2209 f = frag_more (insn_size);
2210
2211 md_number_to_chars (f, insn, insn_size);
2212
2213 if (extra_data_after_insn)
2214 {
2215 f = frag_more (extra_data_len);
2216
2217 md_number_to_chars (f, extra_data, extra_data_len);
2218
2219 extra_data_after_insn = false;
2220 }
2221 }
2222
2223 /* Create any fixups. At this point we do not use a
2224 bfd_reloc_code_real_type, but instead just use the
2225 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2226 handle fixups for any operand type, although that is admittedly
2227 not a very exciting feature. We pick a BFD reloc type in
2228 md_apply_fix. */
2229 for (i = 0; i < fc; i++)
2230 {
2231 const struct v850_operand * operand;
2232 bfd_reloc_code_real_type reloc;
2233
2234 operand = & v850_operands[ fixups[i].opindex ];
2235
2236 reloc = fixups[i].reloc;
2237
2238 if (reloc != BFD_RELOC_UNUSED)
2239 {
2240 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput,
2241 reloc);
2242 int size;
2243 int address;
2244 fixS * fixP;
2245
2246 if (!reloc_howto)
2247 abort();
2248
2249 size = bfd_get_reloc_size (reloc_howto);
2250
2251 /* XXX This will abort on an R_V850_8 reloc -
2252 is this reloc actually used ? */
2253 if (size != 2 && size != 4)
2254 abort();
2255
2256 address = (f - frag_now->fr_literal) + insn_size - size;
2257
2258 if (reloc == BFD_RELOC_32)
2259 {
2260 address += 2;
2261 }
2262
2263 fixP = fix_new_exp (frag_now, address, size,
2264 & fixups[i].exp,
2265 reloc_howto->pc_relative,
2266 reloc);
2267
2268 switch (reloc)
2269 {
2270 case BFD_RELOC_LO16:
2271 case BFD_RELOC_HI16:
2272 case BFD_RELOC_HI16_S:
2273 fixP->fx_no_overflow = 1;
2274 break;
2275 }
2276 }
2277 else
2278 {
2279 fix_new_exp (
2280 frag_now,
2281 f - frag_now->fr_literal, 4,
2282 & fixups[i].exp,
2283 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
2284 (bfd_reloc_code_real_type) (fixups[i].opindex
2285 + (int) BFD_RELOC_UNUSED)
2286 );
2287 }
2288 }
2289
2290 input_line_pointer = saved_input_line_pointer;
2291 }
2292
2293
2294 /* If while processing a fixup, a reloc really needs to be created */
2295 /* then it is done here. */
2296
2297 arelent *
2298 tc_gen_reloc (seg, fixp)
2299 asection * seg;
2300 fixS * fixp;
2301 {
2302 arelent * reloc;
2303
2304 reloc = (arelent *) xmalloc (sizeof (arelent));
2305 reloc->sym_ptr_ptr = & fixp->fx_addsy->bsym;
2306 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2307 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
2308
2309 if (reloc->howto == (reloc_howto_type *) NULL)
2310 {
2311 as_bad_where (fixp->fx_file, fixp->fx_line,
2312 /* xgettext:c-format */
2313 _("reloc %d not supported by object file format"),
2314 (int)fixp->fx_r_type);
2315
2316 xfree (reloc);
2317
2318 return NULL;
2319 }
2320
2321 reloc->addend = fixp->fx_addnumber;
2322
2323 return reloc;
2324 }
2325
2326 /* Assume everything will fit in two bytes, then expand as necessary. */
2327 int
2328 md_estimate_size_before_relax (fragp, seg)
2329 fragS * fragp;
2330 asection * seg;
2331 {
2332 if (fragp->fr_subtype == 0)
2333 fragp->fr_var = 4;
2334 else if (fragp->fr_subtype == 2)
2335 fragp->fr_var = 2;
2336 else
2337 abort ();
2338 return 2;
2339 }
2340
2341 long
2342 md_pcrel_from (fixp)
2343 fixS * fixp;
2344 {
2345 /* If the symbol is undefined, or in a section other than our own,
2346 then let the linker figure it out. */
2347 if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
2348 {
2349 /* The symbol is undefined. Let the linker figure it out. */
2350 return 0;
2351 }
2352 return fixp->fx_frag->fr_address + fixp->fx_where;
2353 }
2354
2355 int
2356 md_apply_fix3 (fixp, valuep, seg)
2357 fixS * fixp;
2358 valueT * valuep;
2359 segT seg;
2360 {
2361 valueT value;
2362 char * where;
2363
2364 if (fixp->fx_addsy == (symbolS *) NULL)
2365 {
2366 value = * valuep;
2367 fixp->fx_done = 1;
2368 }
2369 else if (fixp->fx_pcrel)
2370 value = * valuep;
2371 else
2372 {
2373 value = fixp->fx_offset;
2374 if (fixp->fx_subsy != (symbolS *) NULL)
2375 {
2376 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
2377 value -= S_GET_VALUE (fixp->fx_subsy);
2378 else
2379 {
2380 /* We don't actually support subtracting a symbol. */
2381 as_bad_where (fixp->fx_file, fixp->fx_line,
2382 _("expression too complex"));
2383 }
2384 }
2385 }
2386
2387 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
2388 {
2389 int opindex;
2390 const struct v850_operand * operand;
2391 unsigned long insn;
2392
2393 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
2394 operand = & v850_operands[ opindex ];
2395
2396 /* Fetch the instruction, insert the fully resolved operand
2397 value, and stuff the instruction back again.
2398
2399 Note the instruction has been stored in little endian
2400 format! */
2401 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2402
2403 insn = bfd_getl32 ((unsigned char *) where);
2404 insn = v850_insert_operand (insn, operand, (offsetT) value,
2405 fixp->fx_file, fixp->fx_line, NULL);
2406 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
2407
2408 if (fixp->fx_done)
2409 {
2410 /* Nothing else to do here. */
2411 return 1;
2412 }
2413
2414 /* Determine a BFD reloc value based on the operand information.
2415 We are only prepared to turn a few of the operands into relocs. */
2416
2417 if (operand->bits == 22)
2418 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
2419 else if (operand->bits == 9)
2420 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
2421 else
2422 {
2423 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
2424
2425 as_bad_where (fixp->fx_file, fixp->fx_line,
2426 _("unresolved expression that must be resolved"));
2427 fixp->fx_done = 1;
2428 return 1;
2429 }
2430 }
2431 else if (fixp->fx_done)
2432 {
2433 /* We still have to insert the value into memory! */
2434 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2435
2436 if (fixp->fx_size == 1)
2437 * where = value & 0xff;
2438 else if (fixp->fx_size == 2)
2439 bfd_putl16 (value & 0xffff, (unsigned char *) where);
2440 else if (fixp->fx_size == 4)
2441 bfd_putl32 (value, (unsigned char *) where);
2442 }
2443
2444 fixp->fx_addnumber = value;
2445 return 1;
2446 }
2447
2448 \f
2449 /* Parse a cons expression. We have to handle hi(), lo(), etc
2450 on the v850. */
2451 void
2452 parse_cons_expression_v850 (exp)
2453 expressionS *exp;
2454 {
2455 /* See if there's a reloc prefix like hi() we have to handle. */
2456 hold_cons_reloc = v850_reloc_prefix (NULL);
2457
2458 /* Do normal expression parsing. */
2459 expression (exp);
2460 }
2461
2462 /* Create a fixup for a cons expression. If parse_cons_expression_v850
2463 found a reloc prefix, then we use that reloc, else we choose an
2464 appropriate one based on the size of the expression. */
2465 void
2466 cons_fix_new_v850 (frag, where, size, exp)
2467 fragS *frag;
2468 int where;
2469 int size;
2470 expressionS *exp;
2471 {
2472 if (hold_cons_reloc == BFD_RELOC_UNUSED)
2473 {
2474 if (size == 4)
2475 hold_cons_reloc = BFD_RELOC_32;
2476 if (size == 2)
2477 hold_cons_reloc = BFD_RELOC_16;
2478 if (size == 1)
2479 hold_cons_reloc = BFD_RELOC_8;
2480 }
2481
2482 if (exp != NULL)
2483 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
2484 else
2485 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
2486 }
GDB Binutils - Deliverables
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