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[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 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 /* allocate_bss: */
378 old_sec = now_seg;
379 old_subsec = now_subseg;
380
381 if (temp)
382 {
383 /* convert to a power of 2 alignment */
384 for (align = 0; (temp & 1) == 0; temp >>= 1, ++align)
385 ;
386
387 if (temp != 1)
388 {
389 as_bad (_("Common alignment not a power of 2"));
390 ignore_rest_of_line ();
391 return;
392 }
393 }
394 else
395 align = 0;
396
397 switch (area)
398 {
399 case AREA_SDA:
400 record_alignment (sbss_section, align);
401 obj_elf_section_change_hook();
402 subseg_set (sbss_section, 0);
403 break;
404
405 case AREA_ZDA:
406 record_alignment (zbss_section, align);
407 obj_elf_section_change_hook();
408 subseg_set (zbss_section, 0);
409 break;
410
411 case AREA_TDA:
412 record_alignment (tbss_section, align);
413 obj_elf_section_change_hook();
414 subseg_set (tbss_section, 0);
415 break;
416
417 default:
418 abort();
419 }
420
421 if (align)
422 frag_align (align, 0, 0);
423
424 switch (area)
425 {
426 case AREA_SDA:
427 if (S_GET_SEGMENT (symbolP) == sbss_section)
428 symbolP->sy_frag->fr_symbol = 0;
429 break;
430
431 case AREA_ZDA:
432 if (S_GET_SEGMENT (symbolP) == zbss_section)
433 symbolP->sy_frag->fr_symbol = 0;
434 break;
435
436 case AREA_TDA:
437 if (S_GET_SEGMENT (symbolP) == tbss_section)
438 symbolP->sy_frag->fr_symbol = 0;
439 break;
440
441 default:
442 abort();
443 }
444
445 symbolP->sy_frag = frag_now;
446 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
447 (offsetT) size, (char *) 0);
448 *pfrag = 0;
449 S_SET_SIZE (symbolP, size);
450
451 switch (area)
452 {
453 case AREA_SDA:
454 S_SET_SEGMENT (symbolP, sbss_section);
455 break;
456
457 case AREA_ZDA:
458 S_SET_SEGMENT (symbolP, zbss_section);
459 break;
460
461 case AREA_TDA:
462 S_SET_SEGMENT (symbolP, tbss_section);
463 break;
464
465 default:
466 abort();
467 }
468
469 S_CLEAR_EXTERNAL (symbolP);
470 obj_elf_section_change_hook();
471 subseg_set (old_sec, old_subsec);
472 }
473 else
474 {
475 allocate_common:
476 S_SET_VALUE (symbolP, (valueT) size);
477 S_SET_ALIGN (symbolP, temp);
478 S_SET_EXTERNAL (symbolP);
479
480 switch (area)
481 {
482 case AREA_SDA:
483 if (scommon_section == NULL)
484 {
485 flagword applicable;
486
487 applicable = bfd_applicable_section_flags (stdoutput);
488
489 scommon_section = subseg_new (".scommon", 0);
490
491 bfd_set_section_flags (stdoutput, scommon_section, applicable
492 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
493 | SEC_HAS_CONTENTS) | SEC_IS_COMMON);
494 }
495 S_SET_SEGMENT (symbolP, scommon_section);
496 break;
497
498 case AREA_ZDA:
499 if (zcommon_section == NULL)
500 {
501 flagword applicable;
502
503 applicable = bfd_applicable_section_flags (stdoutput);
504
505 zcommon_section = subseg_new (".zcommon", 0);
506
507 bfd_set_section_flags (stdoutput, zcommon_section, applicable
508 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
509 | SEC_HAS_CONTENTS) | SEC_IS_COMMON);
510 }
511 S_SET_SEGMENT (symbolP, zcommon_section);
512 break;
513
514 case AREA_TDA:
515 if (tcommon_section == NULL)
516 {
517 flagword applicable;
518
519 applicable = bfd_applicable_section_flags (stdoutput);
520
521 tcommon_section = subseg_new (".tcommon", 0);
522
523 bfd_set_section_flags (stdoutput, tcommon_section, applicable
524 & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA
525 | SEC_HAS_CONTENTS) | SEC_IS_COMMON);
526 }
527 S_SET_SEGMENT (symbolP, tcommon_section);
528 break;
529
530 default:
531 abort();
532 }
533 }
534 }
535 else
536 {
537 input_line_pointer++;
538 /* @@ Some use the dot, some don't. Can we get some consistency?? */
539 if (*input_line_pointer == '.')
540 input_line_pointer++;
541 /* @@ Some say data, some say bss. */
542 if (strncmp (input_line_pointer, "bss\"", 4)
543 && strncmp (input_line_pointer, "data\"", 5))
544 {
545 while (*--input_line_pointer != '"')
546 ;
547 input_line_pointer--;
548 goto bad_common_segment;
549 }
550 while (*input_line_pointer++ != '"')
551 ;
552 goto allocate_common;
553 }
554
555 symbolP->bsym->flags |= BSF_OBJECT;
556
557 demand_empty_rest_of_line ();
558 return;
559
560 {
561 bad_common_segment:
562 p = input_line_pointer;
563 while (*p && *p != '\n')
564 p++;
565 c = *p;
566 *p = '\0';
567 as_bad (_("bad .common segment %s"), input_line_pointer + 1);
568 *p = c;
569 input_line_pointer = p;
570 ignore_rest_of_line ();
571 return;
572 }
573 }
574
575 void
576 set_machine (int number)
577 {
578 machine = number;
579 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
580
581 switch (machine)
582 {
583 case 0: processor_mask = PROCESSOR_V850; break;
584 /* start-sanitize-v850e */
585 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
586 case bfd_mach_v850ea: processor_mask = PROCESSOR_V850EA; break;
587 /* end-sanitize-v850e */
588 }
589 }
590
591 /* The target specific pseudo-ops which we support. */
592 const pseudo_typeS md_pseudo_table[] =
593 {
594 {"sdata", v850_sdata, 0},
595 {"tdata", v850_tdata, 0},
596 {"zdata", v850_zdata, 0},
597 {"sbss", v850_sbss, 0},
598 {"tbss", v850_tbss, 0},
599 {"zbss", v850_zbss, 0},
600 {"rosdata", v850_rosdata, 0},
601 {"rozdata", v850_rozdata, 0},
602 {"bss", v850_bss, 0},
603 {"offset", v850_offset, 0},
604 {"word", cons, 4},
605 {"zcomm", v850_comm, AREA_ZDA},
606 {"scomm", v850_comm, AREA_SDA},
607 {"tcomm", v850_comm, AREA_TDA},
608 {"v850", set_machine, 0},
609 /* start-sanitize-v850e */
610 {"call_table_data", v850_call_table_data, 0},
611 {"call_table_text", v850_call_table_text, 0},
612 {"v850e", set_machine, bfd_mach_v850e},
613 {"v850ea", set_machine, bfd_mach_v850ea},
614 /* end-sanitize-v850e */
615 { NULL, NULL, 0}
616 };
617
618 /* Opcode hash table. */
619 static struct hash_control *v850_hash;
620
621 /* This table is sorted. Suitable for searching by a binary search. */
622 static const struct reg_name pre_defined_registers[] =
623 {
624 { "ep", 30 }, /* ep - element ptr */
625 { "gp", 4 }, /* gp - global ptr */
626 { "hp", 2 }, /* hp - handler stack ptr */
627 { "lp", 31 }, /* lp - link ptr */
628 { "r0", 0 },
629 { "r1", 1 },
630 { "r10", 10 },
631 { "r11", 11 },
632 { "r12", 12 },
633 { "r13", 13 },
634 { "r14", 14 },
635 { "r15", 15 },
636 { "r16", 16 },
637 { "r17", 17 },
638 { "r18", 18 },
639 { "r19", 19 },
640 { "r2", 2 },
641 { "r20", 20 },
642 { "r21", 21 },
643 { "r22", 22 },
644 { "r23", 23 },
645 { "r24", 24 },
646 { "r25", 25 },
647 { "r26", 26 },
648 { "r27", 27 },
649 { "r28", 28 },
650 { "r29", 29 },
651 { "r3", 3 },
652 { "r30", 30 },
653 { "r31", 31 },
654 { "r4", 4 },
655 { "r5", 5 },
656 { "r6", 6 },
657 { "r7", 7 },
658 { "r8", 8 },
659 { "r9", 9 },
660 { "sp", 3 }, /* sp - stack ptr */
661 { "tp", 5 }, /* tp - text ptr */
662 { "zero", 0 },
663 };
664 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
665
666
667 static const struct reg_name system_registers[] =
668 {
669 /* start-sanitize-v850e */
670 { "ctbp", 20 },
671 { "ctpc", 16 },
672 { "ctpsw", 17 },
673 { "dbpc", 18 },
674 { "dbpsw", 19 },
675 /* end-sanitize-v850e */
676 { "ecr", 4 },
677 { "eipc", 0 },
678 { "eipsw", 1 },
679 { "fepc", 2 },
680 { "fepsw", 3 },
681 { "psw", 5 },
682 };
683 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
684
685 /* start-sanitize-v850e */
686 static const struct reg_name system_list_registers[] =
687 {
688 {"PS", 5 },
689 {"SR", 0 + 1}
690 };
691 #define SYSREGLIST_NAME_CNT (sizeof (system_list_registers) / sizeof (struct reg_name))
692 /* end-sanitize-v850e */
693
694 static const struct reg_name cc_names[] =
695 {
696 { "c", 0x1 },
697 { "e", 0x2 },
698 { "ge", 0xe },
699 { "gt", 0xf },
700 { "h", 0xb },
701 { "l", 0x1 },
702 { "le", 0x7 },
703 { "lt", 0x6 },
704 { "n", 0x4 },
705 { "nc", 0x9 },
706 { "ne", 0xa },
707 { "nh", 0x3 },
708 { "nl", 0x9 },
709 { "ns", 0xc },
710 { "nv", 0x8 },
711 { "nz", 0xa },
712 { "p", 0xc },
713 { "s", 0x4 },
714 { "sa", 0xd },
715 { "t", 0x5 },
716 { "v", 0x0 },
717 { "z", 0x2 },
718 };
719 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
720
721 /* reg_name_search does a binary search of the given register table
722 to see if "name" is a valid regiter name. Returns the register
723 number from the array on success, or -1 on failure. */
724
725 static int
726 reg_name_search (regs, regcount, name, accept_numbers)
727 const struct reg_name * regs;
728 int regcount;
729 const char * name;
730 boolean accept_numbers;
731 {
732 int middle, low, high;
733 int cmp;
734 symbolS * symbolP;
735
736 /* If the register name is a symbol, then evaluate it. */
737 if ((symbolP = symbol_find (name)) != NULL)
738 {
739 /* If the symbol is an alias for another name then use that.
740 If the symbol is an alias for a number, then return the number. */
741 if (symbolP->sy_value.X_op == O_symbol)
742 {
743 name = S_GET_NAME (symbolP->sy_value.X_add_symbol);
744 }
745 else if (accept_numbers)
746 {
747 int reg = S_GET_VALUE (symbolP);
748
749 if (reg >= 0 && reg <= 31)
750 return reg;
751 }
752 }
753
754 low = 0;
755 high = regcount - 1;
756
757 do
758 {
759 middle = (low + high) / 2;
760 cmp = strcasecmp (name, regs[middle].name);
761 if (cmp < 0)
762 high = middle - 1;
763 else if (cmp > 0)
764 low = middle + 1;
765 else
766 return regs[middle].value;
767 }
768 while (low <= high);
769 return -1;
770 }
771
772
773 /* Summary of register_name().
774 *
775 * in: Input_line_pointer points to 1st char of operand.
776 *
777 * out: A expressionS.
778 * The operand may have been a register: in this case, X_op == O_register,
779 * X_add_number is set to the register number, and truth is returned.
780 * Input_line_pointer->(next non-blank) char after operand, or is in
781 * its original state.
782 */
783 static boolean
784 register_name (expressionP)
785 expressionS * expressionP;
786 {
787 int reg_number;
788 char * name;
789 char * start;
790 char c;
791
792 /* Find the spelling of the operand */
793 start = name = input_line_pointer;
794
795 c = get_symbol_end ();
796
797 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT,
798 name, FALSE);
799
800 * input_line_pointer = c; /* put back the delimiting char */
801
802 /* look to see if it's in the register table */
803 if (reg_number >= 0)
804 {
805 expressionP->X_op = O_register;
806 expressionP->X_add_number = reg_number;
807
808 /* make the rest nice */
809 expressionP->X_add_symbol = NULL;
810 expressionP->X_op_symbol = NULL;
811
812 return true;
813 }
814 else
815 {
816 /* reset the line as if we had not done anything */
817 input_line_pointer = start;
818
819 return false;
820 }
821 }
822
823 /* Summary of system_register_name().
824 *
825 * in: Input_line_pointer points to 1st char of operand.
826 * expressionP points to an expression structure to be filled in.
827 * accept_numbers is true iff numerical register names may be used.
828 * start-sanitize-v850e
829 * accept_list_names is true iff the special names PS and SR may be
830 * accepted.
831 * end-sanitize-v850e
832 *
833 * out: A expressionS structure in expressionP.
834 * The operand may have been a register: in this case, X_op == O_register,
835 * X_add_number is set to the register number, and truth is returned.
836 * Input_line_pointer->(next non-blank) char after operand, or is in
837 * its original state.
838 */
839 static boolean
840 system_register_name (expressionP, accept_numbers
841 /* start-sanitize-v850e */
842 , accept_list_names
843 /* end-sanitize-v850e */
844 )
845 expressionS * expressionP;
846 boolean accept_numbers;
847 /* start-sanitize-v850e */
848 boolean accept_list_names;
849 /* end-sanitize-v850e */
850 {
851 int reg_number;
852 char * name;
853 char * start;
854 char c;
855
856 /* Find the spelling of the operand */
857 start = name = input_line_pointer;
858
859 c = get_symbol_end ();
860 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name,
861 accept_numbers);
862
863 * input_line_pointer = c; /* put back the delimiting char */
864
865 if (reg_number < 0
866 && accept_numbers)
867 {
868 input_line_pointer = start; /* reset input_line pointer */
869
870 if (isdigit (* input_line_pointer))
871 {
872 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
873
874 /* Make sure that the register number is allowable. */
875 if ( reg_number < 0
876 || reg_number > 5
877 /* start-sanitize-v850e */
878 && reg_number < 16
879 || reg_number > 20
880 /* end-sanitize-v850e */
881 )
882 {
883 reg_number = -1;
884 }
885 }
886 /* start-sanitize-v850e */
887 else if (accept_list_names)
888 {
889 c = get_symbol_end ();
890 reg_number = reg_name_search (system_list_registers,
891 SYSREGLIST_NAME_CNT, name, FALSE);
892
893 * input_line_pointer = c; /* put back the delimiting char */
894 }
895 /* end-sanitize-v850e */
896 }
897
898 /* look to see if it's in the register table */
899 if (reg_number >= 0)
900 {
901 expressionP->X_op = O_register;
902 expressionP->X_add_number = reg_number;
903
904 /* make the rest nice */
905 expressionP->X_add_symbol = NULL;
906 expressionP->X_op_symbol = NULL;
907
908 return true;
909 }
910 else
911 {
912 /* reset the line as if we had not done anything */
913 input_line_pointer = start;
914
915 return false;
916 }
917 }
918
919 /* Summary of cc_name().
920 *
921 * in: Input_line_pointer points to 1st char of operand.
922 *
923 * out: A expressionS.
924 * The operand may have been a register: in this case, X_op == O_register,
925 * X_add_number is set to the register number, and truth is returned.
926 * Input_line_pointer->(next non-blank) char after operand, or is in
927 * its original state.
928 */
929 static boolean
930 cc_name (expressionP)
931 expressionS * expressionP;
932 {
933 int reg_number;
934 char * name;
935 char * start;
936 char c;
937
938 /* Find the spelling of the operand */
939 start = name = input_line_pointer;
940
941 c = get_symbol_end ();
942 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE);
943
944 * input_line_pointer = c; /* put back the delimiting char */
945
946 /* look to see if it's in the register table */
947 if (reg_number >= 0)
948 {
949 expressionP->X_op = O_constant;
950 expressionP->X_add_number = reg_number;
951
952 /* make the rest nice */
953 expressionP->X_add_symbol = NULL;
954 expressionP->X_op_symbol = NULL;
955
956 return true;
957 }
958 else
959 {
960 /* reset the line as if we had not done anything */
961 input_line_pointer = start;
962
963 return false;
964 }
965 }
966
967 static void
968 skip_white_space (void)
969 {
970 while ( * input_line_pointer == ' '
971 || * input_line_pointer == '\t')
972 ++ input_line_pointer;
973 }
974
975 /* start-sanitize-v850e */
976 /* Summary of parse_register_list ().
977 *
978 * in: Input_line_pointer points to 1st char of a list of registers.
979 * insn is the partially constructed instruction.
980 * operand is the operand being inserted.
981 *
982 * out: NULL if the parse completed successfully, otherwise a
983 * pointer to an error message is returned. If the parse
984 * completes the correct bit fields in the instruction
985 * will be filled in.
986 *
987 * Parses register lists with the syntax:
988 *
989 * { rX }
990 * { rX, rY }
991 * { rX - rY }
992 * { rX - rY, rZ }
993 * etc
994 *
995 * and also parses constant epxressions whoes bits indicate the
996 * registers in the lists. The LSB in the expression refers to
997 * the lowest numbered permissable register in the register list,
998 * and so on upwards. System registers are considered to be very
999 * high numbers.
1000 *
1001 */
1002 static char *
1003 parse_register_list
1004 (
1005 unsigned long * insn,
1006 const struct v850_operand * operand
1007 )
1008 {
1009 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 };
1010 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 };
1011 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 };
1012 int * regs;
1013 expressionS exp;
1014
1015
1016 /* Select a register array to parse. */
1017 switch (operand->shift)
1018 {
1019 case 0xffe00001: regs = type1_regs; break;
1020 case 0xfff8000f: regs = type2_regs; break;
1021 case 0xfff8001f: regs = type3_regs; break;
1022 default:
1023 as_bad (_("unknown operand shift: %x\n"), operand->shift );
1024 return _("internal failure in parse_register_list");
1025 }
1026
1027 skip_white_space();
1028
1029 /* If the expression starts with a curly brace it is a register list.
1030 Otherwise it is a constant expression, whoes bits indicate which
1031 registers are to be included in the list. */
1032
1033 if (* input_line_pointer != '{')
1034 {
1035 int bits;
1036 int reg;
1037 int i;
1038
1039 expression (& exp);
1040
1041 if (exp.X_op != O_constant)
1042 return _("constant expression or register list expected");
1043
1044 if (regs == type1_regs)
1045 {
1046 if (exp.X_add_number & 0xFFFFF000)
1047 return _("high bits set in register list expression");
1048
1049 for (reg = 20; reg < 32; reg ++)
1050 if (exp.X_add_number & (1 << (reg - 20)))
1051 {
1052 for (i = 0; i < 32; i++)
1053 if (regs[i] == reg)
1054 * insn |= (1 << i);
1055 }
1056 }
1057 else if (regs == type2_regs)
1058 {
1059 if (exp.X_add_number & 0xFFFE0000)
1060 return _("high bits set in register list expression");
1061
1062 for (reg = 1; reg < 16; reg ++)
1063 if (exp.X_add_number & (1 << (reg - 1)))
1064 {
1065 for (i = 0; i < 32; i++)
1066 if (regs[i] == reg)
1067 * insn |= (1 << i);
1068 }
1069
1070 if (exp.X_add_number & (1 << 15))
1071 * insn |= (1 << 3);
1072
1073 if (exp.X_add_number & (1 << 16))
1074 * insn |= (1 << 19);
1075 }
1076 else /* regs == type3_regs */
1077 {
1078 if (exp.X_add_number & 0xFFFE0000)
1079 return _("high bits set in register list expression");
1080
1081 for (reg = 16; reg < 32; reg ++)
1082 if (exp.X_add_number & (1 << (reg - 16)))
1083 {
1084 for (i = 0; i < 32; i++)
1085 if (regs[i] == reg)
1086 * insn |= (1 << i);
1087 }
1088
1089 if (exp.X_add_number & (1 << 16))
1090 * insn |= (1 << 19);
1091 }
1092
1093 return NULL;
1094 }
1095
1096 input_line_pointer ++;
1097
1098 /* Parse the register list until a terminator (closing curly brace or
1099 new-line) is found. */
1100 for (;;)
1101 {
1102 if (register_name (& exp))
1103 {
1104 int i;
1105
1106 /* Locate the given register in the list, and if it is there,
1107 insert the corresponding bit into the instruction. */
1108 for (i = 0; i < 32; i++)
1109 {
1110 if (regs[ i ] == exp.X_add_number)
1111 {
1112 * insn |= (1 << i);
1113 break;
1114 }
1115 }
1116
1117 if (i == 32)
1118 {
1119 return _("illegal register included in list");
1120 }
1121 }
1122 else if (system_register_name (& exp, true, true))
1123 {
1124 if (regs == type1_regs)
1125 {
1126 return _("system registers cannot be included in list");
1127 }
1128 else if (exp.X_add_number == 5)
1129 {
1130 if (regs == type2_regs)
1131 return _("PSW cannot be included in list");
1132 else
1133 * insn |= 0x8;
1134 }
1135 else if (exp.X_add_number < 4)
1136 * insn |= 0x80000;
1137 else
1138 return _("High value system registers cannot be included in list");
1139 }
1140 else if (* input_line_pointer == '}')
1141 {
1142 input_line_pointer ++;
1143 break;
1144 }
1145 else if (* input_line_pointer == ',')
1146 {
1147 input_line_pointer ++;
1148 continue;
1149 }
1150 else if (* input_line_pointer == '-')
1151 {
1152 /* We have encountered a range of registers: rX - rY */
1153 int j;
1154 expressionS exp2;
1155
1156 /* Skip the dash. */
1157 ++ input_line_pointer;
1158
1159 /* Get the second register in the range. */
1160 if (! register_name (& exp2))
1161 {
1162 return _("second register should follow dash in register list");
1163 exp2.X_add_number = exp.X_add_number;
1164 }
1165
1166 /* Add the rest of the registers in the range. */
1167 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
1168 {
1169 int i;
1170
1171 /* Locate the given register in the list, and if it is there,
1172 insert the corresponding bit into the instruction. */
1173 for (i = 0; i < 32; i++)
1174 {
1175 if (regs[ i ] == j)
1176 {
1177 * insn |= (1 << i);
1178 break;
1179 }
1180 }
1181
1182 if (i == 32)
1183 return _("illegal register included in list");
1184 }
1185 }
1186 else
1187 {
1188 break;
1189 }
1190
1191 skip_white_space ();
1192 }
1193
1194 return NULL;
1195 }
1196 /* end-sanitize-v850e */
1197
1198 CONST char * md_shortopts = "m:";
1199
1200 struct option md_longopts[] =
1201 {
1202 {NULL, no_argument, NULL, 0}
1203 };
1204 size_t md_longopts_size = sizeof md_longopts;
1205
1206
1207 void
1208 md_show_usage (stream)
1209 FILE * stream;
1210 {
1211 fprintf (stream, _("V850 options:\n"));
1212 fprintf (stream, _("\t-mwarn-signed-overflow Warn if signed immediate values overflow\n"));
1213 fprintf (stream, _("\t-mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n"));
1214 fprintf (stream, _("\t-mv850 The code is targeted at the v850\n"));
1215 /* start-sanitize-v850e */
1216 fprintf (stream, _("\t-mv850e The code is targeted at the v850e\n"));
1217 fprintf (stream, _("\t-mv850ea The code is targeted at the v850ea\n"));
1218 fprintf (stream, _("\t-mv850any The code is generic, despite any processor specific instructions\n"));
1219 /* end-sanitize-v850e */
1220 }
1221
1222 int
1223 md_parse_option (c, arg)
1224 int c;
1225 char * arg;
1226 {
1227 if (c != 'm')
1228 {
1229 /* xgettext:c-format */
1230 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1231 return 0;
1232 }
1233
1234 if (strcmp (arg, "warn-signed-overflow") == 0)
1235 {
1236 warn_signed_overflows = TRUE;
1237 }
1238 else if (strcmp (arg, "warn-unsigned-overflow") == 0)
1239 {
1240 warn_unsigned_overflows = TRUE;
1241 }
1242 else if (strcmp (arg, "v850") == 0)
1243 {
1244 machine = 0;
1245 processor_mask = PROCESSOR_V850;
1246 }
1247 /* start-sanitize-v850e */
1248 else if (strcmp (arg, "v850e") == 0)
1249 {
1250 machine = bfd_mach_v850e;
1251 processor_mask = PROCESSOR_V850E;
1252 }
1253 else if (strcmp (arg, "v850ea") == 0)
1254 {
1255 machine = bfd_mach_v850ea;
1256 processor_mask = PROCESSOR_V850EA;
1257 }
1258 else if (strcmp (arg, "v850any") == 0)
1259 {
1260 machine = 0; /* Tell the world that this is for any v850 chip. */
1261 processor_mask = PROCESSOR_V850EA; /* But support instructions for the extended versions. */
1262 }
1263 /* end-sanitize-v850e */
1264 else
1265 {
1266 /* xgettext:c-format */
1267 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1268 return 0;
1269 }
1270
1271 return 1;
1272 }
1273
1274 symbolS *
1275 md_undefined_symbol (name)
1276 char * name;
1277 {
1278 return 0;
1279 }
1280
1281 char *
1282 md_atof (type, litp, sizep)
1283 int type;
1284 char * litp;
1285 int * sizep;
1286 {
1287 int prec;
1288 LITTLENUM_TYPE words[4];
1289 char * t;
1290 int i;
1291
1292 switch (type)
1293 {
1294 case 'f':
1295 prec = 2;
1296 break;
1297
1298 case 'd':
1299 prec = 4;
1300 break;
1301
1302 default:
1303 *sizep = 0;
1304 return _("bad call to md_atof");
1305 }
1306
1307 t = atof_ieee (input_line_pointer, type, words);
1308 if (t)
1309 input_line_pointer = t;
1310
1311 *sizep = prec * 2;
1312
1313 for (i = prec - 1; i >= 0; i--)
1314 {
1315 md_number_to_chars (litp, (valueT) words[i], 2);
1316 litp += 2;
1317 }
1318
1319 return NULL;
1320 }
1321
1322
1323 /* Very gross. */
1324 void
1325 md_convert_frag (abfd, sec, fragP)
1326 bfd * abfd;
1327 asection * sec;
1328 fragS * fragP;
1329 {
1330 subseg_change (sec, 0);
1331
1332 /* In range conditional or unconditional branch. */
1333 if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2)
1334 {
1335 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
1336 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
1337 fragP->fr_var = 0;
1338 fragP->fr_fix += 2;
1339 }
1340 /* Out of range conditional branch. Emit a branch around a jump. */
1341 else if (fragP->fr_subtype == 1)
1342 {
1343 unsigned char *buffer =
1344 (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
1345
1346 /* Reverse the condition of the first branch. */
1347 buffer[0] ^= 0x08;
1348 /* Mask off all the displacement bits. */
1349 buffer[0] &= 0x8f;
1350 buffer[1] &= 0x07;
1351 /* Now set the displacement bits so that we branch
1352 around the unconditional branch. */
1353 buffer[0] |= 0x30;
1354
1355 /* Now create the unconditional branch + fixup to the final
1356 target. */
1357 md_number_to_chars (buffer + 2, 0x00000780, 4);
1358 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
1359 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1360 + 1);
1361 fragP->fr_var = 0;
1362 fragP->fr_fix += 6;
1363 }
1364 /* Out of range unconditional branch. Emit a jump. */
1365 else if (fragP->fr_subtype == 3)
1366 {
1367 md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4);
1368 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
1369 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1370 + 1);
1371 fragP->fr_var = 0;
1372 fragP->fr_fix += 4;
1373 }
1374 else
1375 abort ();
1376 }
1377
1378 valueT
1379 md_section_align (seg, addr)
1380 asection * seg;
1381 valueT addr;
1382 {
1383 int align = bfd_get_section_alignment (stdoutput, seg);
1384 return ((addr + (1 << align) - 1) & (-1 << align));
1385 }
1386
1387 void
1388 md_begin ()
1389 {
1390 char * prev_name = "";
1391 register const struct v850_opcode * op;
1392 flagword applicable;
1393
1394 /* start-sanitize-v850e */
1395 if (strncmp (TARGET_CPU, "v850ea", 6) == 0)
1396 {
1397 if (machine == -1)
1398 machine = bfd_mach_v850ea;
1399
1400 if (processor_mask == -1)
1401 processor_mask = PROCESSOR_V850EA;
1402 }
1403 else if (strncmp (TARGET_CPU, "v850e", 5) == 0)
1404 {
1405 if (machine == -1)
1406 machine = bfd_mach_v850e;
1407
1408 if (processor_mask == -1)
1409 processor_mask = PROCESSOR_V850E;
1410 }
1411 else
1412 /* end-sanitize-v850e */
1413 if (strncmp (TARGET_CPU, "v850", 4) == 0)
1414 {
1415 if (machine == -1)
1416 machine = 0;
1417
1418 if (processor_mask == -1)
1419 processor_mask = PROCESSOR_V850;
1420 }
1421 else
1422 /* xgettext:c-format */
1423 as_bad (_("Unable to determine default target processor from string: %s"),
1424 TARGET_CPU);
1425
1426 v850_hash = hash_new();
1427
1428 /* Insert unique names into hash table. The V850 instruction set
1429 has many identical opcode names that have different opcodes based
1430 on the operands. This hash table then provides a quick index to
1431 the first opcode with a particular name in the opcode table. */
1432
1433 op = v850_opcodes;
1434 while (op->name)
1435 {
1436 if (strcmp (prev_name, op->name))
1437 {
1438 prev_name = (char *) op->name;
1439 hash_insert (v850_hash, op->name, (char *) op);
1440 }
1441 op++;
1442 }
1443
1444 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1445
1446 /* start-sanitize-v850e */
1447 call_table_data_section = subseg_new (".call_table_data", 0);
1448 bfd_set_section_flags (stdoutput, call_table_data_section,
1449 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1450 | SEC_DATA | SEC_HAS_CONTENTS));
1451
1452 call_table_text_section = subseg_new (".call_table_text", 0);
1453 bfd_set_section_flags (stdoutput, call_table_text_section,
1454 applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE));
1455
1456 /* Restore text section as the current default. */
1457 subseg_set (text_section, 0);
1458 /* end-sanitize-v850e */
1459
1460 }
1461
1462
1463 /* start-sanitize-v850e */
1464 static bfd_reloc_code_real_type
1465 handle_ctoff (const struct v850_operand * operand)
1466 {
1467 if (operand == NULL)
1468 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1469
1470 if ( operand->bits != 6
1471 || operand->shift != 0)
1472 {
1473 as_bad (_("ctoff() relocation used on an instruction which does not support it"));
1474 return BFD_RELOC_64; /* Used to indicate an error condition. */
1475 }
1476
1477 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1478 }
1479 /* end-sanitize-v850e */
1480
1481 static bfd_reloc_code_real_type
1482 handle_sdaoff (const struct v850_operand * operand)
1483 {
1484 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1485 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1486 /* start-sanitize-v850e */
1487 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1488 /* end-sanitize-v850e */
1489
1490 if ( operand->bits != 16
1491 || operand->shift != 16)
1492 {
1493 as_bad (_("sdaoff() relocation used on an instruction which does not support it"));
1494 return BFD_RELOC_64; /* Used to indicate an error condition. */
1495 }
1496
1497 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1498 }
1499
1500 static bfd_reloc_code_real_type
1501 handle_zdaoff (const struct v850_operand * operand)
1502 {
1503 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1504 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1505 /* start-sanitize-v850e */
1506 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1507 /* end-sanitize-v850e */
1508
1509 if ( operand->bits != 16
1510 || operand->shift != 16)
1511 {
1512 as_bad (_("zdaoff() relocation used on an instruction which does not support it"));
1513 return BFD_RELOC_64; /* Used to indicate an error condition. */
1514 }
1515
1516 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1517 }
1518
1519 static bfd_reloc_code_real_type
1520 handle_tdaoff (const struct v850_operand * operand)
1521 {
1522 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1523 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1524 /* start-sanitize-v850e */
1525 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1526 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1527 /* end-sanitize-v850e */
1528 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1529
1530 if (operand->bits != 7)
1531 {
1532 as_bad (_("tdaoff() relocation used on an instruction which does not support it"));
1533 return BFD_RELOC_64; /* Used to indicate an error condition. */
1534 }
1535
1536 return operand->insert != NULL
1537 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1538 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1539 }
1540
1541 /* Warning: The code in this function relies upon the definitions
1542 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1543 matching the hard coded values contained herein. */
1544
1545 static bfd_reloc_code_real_type
1546 v850_reloc_prefix (const struct v850_operand * operand)
1547 {
1548 boolean paren_skipped = false;
1549
1550
1551 /* Skip leading opening parenthesis. */
1552 if (* input_line_pointer == '(')
1553 {
1554 ++ input_line_pointer;
1555 paren_skipped = true;
1556 }
1557
1558 #define CHECK_(name, reloc) \
1559 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1560 { \
1561 input_line_pointer += strlen (name); \
1562 return reloc; \
1563 }
1564
1565 CHECK_ ("hi0", BFD_RELOC_HI16);
1566 CHECK_ ("hi", BFD_RELOC_HI16_S);
1567 CHECK_ ("lo", BFD_RELOC_LO16);
1568 CHECK_ ("sdaoff", handle_sdaoff (operand));
1569 CHECK_ ("zdaoff", handle_zdaoff (operand));
1570 CHECK_ ("tdaoff", handle_tdaoff (operand));
1571
1572 /* start-sanitize-v850e */
1573 CHECK_ ("hilo", BFD_RELOC_32);
1574 CHECK_ ("ctoff", handle_ctoff (operand));
1575 /* end-sanitize-v850e */
1576
1577 /* Restore skipped parenthesis. */
1578 if (paren_skipped)
1579 -- input_line_pointer;
1580
1581 return BFD_RELOC_UNUSED;
1582 }
1583
1584 /* Insert an operand value into an instruction. */
1585
1586 static unsigned long
1587 v850_insert_operand (insn, operand, val, file, line, str)
1588 unsigned long insn;
1589 const struct v850_operand * operand;
1590 offsetT val;
1591 char * file;
1592 unsigned int line;
1593 char * str;
1594 {
1595 if (operand->insert)
1596 {
1597 const char * message = NULL;
1598
1599 insn = operand->insert (insn, val, & message);
1600 if (message != NULL)
1601 {
1602 if ((operand->flags & V850_OPERAND_SIGNED)
1603 && ! warn_signed_overflows
1604 && strstr (message, "out of range") != NULL)
1605 {
1606 /* skip warning... */
1607 }
1608 else if ((operand->flags & V850_OPERAND_SIGNED) == 0
1609 && ! warn_unsigned_overflows
1610 && strstr (message, "out of range") != NULL)
1611 {
1612 /* skip warning... */
1613 }
1614 else if (str)
1615 {
1616 if (file == (char *) NULL)
1617 as_warn ("%s: %s", str, message);
1618 else
1619 as_warn_where (file, line, "%s: %s", str, message);
1620 }
1621 else
1622 {
1623 if (file == (char *) NULL)
1624 as_warn (message);
1625 else
1626 as_warn_where (file, line, message);
1627 }
1628 }
1629 }
1630 else
1631 {
1632 if (operand->bits != 32)
1633 {
1634 long min, max;
1635 offsetT test;
1636
1637 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1638 {
1639 if (! warn_signed_overflows)
1640 max = (1 << operand->bits) - 1;
1641 else
1642 max = (1 << (operand->bits - 1)) - 1;
1643
1644 min = - (1 << (operand->bits - 1));
1645 }
1646 else
1647 {
1648 max = (1 << operand->bits) - 1;
1649
1650 if (! warn_unsigned_overflows)
1651 min = - (1 << (operand->bits - 1));
1652 else
1653 min = 0;
1654 }
1655
1656 if (val < (offsetT) min || val > (offsetT) max)
1657 {
1658 /* xgettext:c-format */
1659 const char * err = _("operand out of range (%s not between %ld and %ld)");
1660 char buf[100];
1661
1662 /* Restore min and mix to expected values for decimal ranges. */
1663 if ((operand->flags & V850_OPERAND_SIGNED)
1664 && ! warn_signed_overflows)
1665 max = (1 << (operand->bits - 1)) - 1;
1666
1667 if (! (operand->flags & V850_OPERAND_SIGNED)
1668 && ! warn_unsigned_overflows)
1669 min = 0;
1670
1671 if (str)
1672 {
1673 sprintf (buf, "%s: ", str);
1674
1675 sprint_value (buf + strlen (buf), val);
1676 }
1677 else
1678 sprint_value (buf, val);
1679
1680 if (file == (char *) NULL)
1681 as_warn (err, buf, min, max);
1682 else
1683 as_warn_where (file, line, err, buf, min, max);
1684 }
1685 }
1686
1687 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1688 }
1689
1690 return insn;
1691 }
1692
1693 \f
1694 static char copy_of_instruction [128];
1695
1696 void
1697 md_assemble (str)
1698 char * str;
1699 {
1700 char * s;
1701 char * start_of_operands;
1702 struct v850_opcode * opcode;
1703 struct v850_opcode * next_opcode;
1704 const unsigned char * opindex_ptr;
1705 int next_opindex;
1706 int relaxable;
1707 unsigned long insn;
1708 unsigned long insn_size;
1709 char * f;
1710 int i;
1711 int match;
1712 boolean extra_data_after_insn = false;
1713 unsigned extra_data_len;
1714 unsigned long extra_data;
1715 char * saved_input_line_pointer;
1716
1717
1718 strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1);
1719
1720 /* Get the opcode. */
1721 for (s = str; *s != '\0' && ! isspace (*s); s++)
1722 continue;
1723
1724 if (*s != '\0')
1725 *s++ = '\0';
1726
1727 /* find the first opcode with the proper name */
1728 opcode = (struct v850_opcode *) hash_find (v850_hash, str);
1729 if (opcode == NULL)
1730 {
1731 /* xgettext:c-format */
1732 as_bad (_("Unrecognized opcode: `%s'"), str);
1733 ignore_rest_of_line ();
1734 return;
1735 }
1736
1737 str = s;
1738 while (isspace (* str))
1739 ++ str;
1740
1741 start_of_operands = str;
1742
1743 saved_input_line_pointer = input_line_pointer;
1744
1745 for (;;)
1746 {
1747 const char * errmsg = NULL;
1748
1749 match = 0;
1750
1751 if ((opcode->processors & processor_mask) == 0)
1752 {
1753 errmsg = _("Target processor does not support this instruction.");
1754 goto error;
1755 }
1756
1757 relaxable = 0;
1758 fc = 0;
1759 next_opindex = 0;
1760 insn = opcode->opcode;
1761 extra_data_after_insn = false;
1762
1763 input_line_pointer = str = start_of_operands;
1764
1765 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr ++)
1766 {
1767 const struct v850_operand * operand;
1768 char * hold;
1769 expressionS ex;
1770 bfd_reloc_code_real_type reloc;
1771
1772 if (next_opindex == 0)
1773 {
1774 operand = & v850_operands[ * opindex_ptr ];
1775 }
1776 else
1777 {
1778 operand = & v850_operands[ next_opindex ];
1779 next_opindex = 0;
1780 }
1781
1782 errmsg = NULL;
1783
1784 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1785 ++ str;
1786
1787 if (operand->flags & V850_OPERAND_RELAX)
1788 relaxable = 1;
1789
1790 /* Gather the operand. */
1791 hold = input_line_pointer;
1792 input_line_pointer = str;
1793
1794 /* lo(), hi(), hi0(), etc... */
1795 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1796 {
1797 /* This is a fake reloc, used to indicate an error condition. */
1798 if (reloc == BFD_RELOC_64)
1799 {
1800 match = 1;
1801 goto error;
1802 }
1803
1804 expression (& ex);
1805
1806 if (ex.X_op == O_constant)
1807 {
1808 switch (reloc)
1809 {
1810 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1811 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]"
1812 and the like. */
1813 /* Fall through. */
1814
1815 case BFD_RELOC_LO16:
1816 {
1817 /* Truncate, then sign extend the value. */
1818 ex.X_add_number = SEXT16 (ex.X_add_number);
1819 break;
1820 }
1821
1822 case BFD_RELOC_HI16:
1823 {
1824 /* Truncate, then sign extend the value. */
1825 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1826 break;
1827 }
1828
1829 case BFD_RELOC_HI16_S:
1830 {
1831 /* Truncate, then sign extend the value. */
1832 int temp = (ex.X_add_number >> 16) & 0xffff;
1833
1834 temp += (ex.X_add_number >> 15) & 1;
1835
1836 ex.X_add_number = SEXT16 (temp);
1837 break;
1838 }
1839
1840 /* start-sanitize-v850e */
1841 case BFD_RELOC_32:
1842 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1843 {
1844 errmsg = _("immediate operand is too large");
1845 goto error;
1846 }
1847
1848 extra_data_after_insn = true;
1849 extra_data_len = 4;
1850 extra_data = ex.X_add_number;
1851 ex.X_add_number = 0;
1852 break;
1853 /* end-sanitize-v850e */
1854
1855 default:
1856 fprintf (stderr, "reloc: %d\n", reloc);
1857 as_bad (_("AAARG -> unhandled constant reloc"));
1858 break;
1859 }
1860
1861 if (fc > MAX_INSN_FIXUPS)
1862 as_fatal (_("too many fixups"));
1863
1864 fixups[ fc ].exp = ex;
1865 fixups[ fc ].opindex = * opindex_ptr;
1866 fixups[ fc ].reloc = reloc;
1867 fc++;
1868 }
1869 else
1870 {
1871 /* start-sanitize-v850e */
1872 if (reloc == BFD_RELOC_32)
1873 {
1874 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1875 {
1876 errmsg = _("immediate operand is too large");
1877 goto error;
1878 }
1879
1880 extra_data_after_insn = true;
1881 extra_data_len = 4;
1882 extra_data = ex.X_add_number;
1883 }
1884 /* end-sanitize-v850e */
1885
1886 if (fc > MAX_INSN_FIXUPS)
1887 as_fatal (_("too many fixups"));
1888
1889 fixups[ fc ].exp = ex;
1890 fixups[ fc ].opindex = * opindex_ptr;
1891 fixups[ fc ].reloc = reloc;
1892 fc++;
1893 }
1894 }
1895 else
1896 {
1897 errmsg = NULL;
1898
1899 if ((operand->flags & V850_OPERAND_REG) != 0)
1900 {
1901 if (!register_name (& ex))
1902 {
1903 errmsg = _("invalid register name");
1904 }
1905 else if ((operand->flags & V850_NOT_R0)
1906 && ex.X_add_number == 0)
1907 {
1908 errmsg = _("register r0 cannot be used here");
1909
1910 /* Force an error message to be generated by
1911 skipping over any following potential matches
1912 for this opcode. */
1913 opcode += 3;
1914 }
1915 }
1916 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1917 {
1918 if (!system_register_name (& ex, true
1919 /* start-sanitize-v850e */
1920 , false
1921 /* end-sanitize-v850e */
1922 ))
1923 {
1924 errmsg = _("invalid system register name");
1925 }
1926 }
1927 else if ((operand->flags & V850_OPERAND_EP) != 0)
1928 {
1929 char * start = input_line_pointer;
1930 char c = get_symbol_end ();
1931
1932 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1933 {
1934 /* Put things back the way we found them. */
1935 *input_line_pointer = c;
1936 input_line_pointer = start;
1937 errmsg = _("expected EP register");
1938 goto error;
1939 }
1940
1941 *input_line_pointer = c;
1942 str = input_line_pointer;
1943 input_line_pointer = hold;
1944
1945 while ( *str == ' ' || *str == ',' || *str == '['
1946 || *str == ']')
1947 ++ str;
1948 continue;
1949 }
1950 else if ((operand->flags & V850_OPERAND_CC) != 0)
1951 {
1952 if (!cc_name (& ex))
1953 {
1954 errmsg = _("invalid condition code name");
1955 }
1956 }
1957 /* start-sanitize-v850e */
1958 else if (operand->flags & V850E_PUSH_POP)
1959 {
1960 errmsg = parse_register_list (& insn, operand);
1961
1962 /* The parse_register_list() function has already done
1963 everything, so fake a dummy expression. */
1964 ex.X_op = O_constant;
1965 ex.X_add_number = 0;
1966 }
1967 else if (operand->flags & V850E_IMMEDIATE16)
1968 {
1969 expression (& ex);
1970
1971 if (ex.X_op != O_constant)
1972 errmsg = _("constant expression expected");
1973 else if (ex.X_add_number & 0xffff0000)
1974 {
1975 if (ex.X_add_number & 0xffff)
1976 errmsg = _("constant too big to fit into instruction");
1977 else if ((insn & 0x001fffc0) == 0x00130780)
1978 ex.X_add_number >>= 16;
1979 else
1980 errmsg = _("constant too big to fit into instruction");
1981 }
1982
1983 extra_data_after_insn = true;
1984 extra_data_len = 2;
1985 extra_data = ex.X_add_number;
1986 ex.X_add_number = 0;
1987 }
1988 else if (operand->flags & V850E_IMMEDIATE32)
1989 {
1990 expression (& ex);
1991
1992 if (ex.X_op != O_constant)
1993 errmsg = _("constant expression expected");
1994
1995 extra_data_after_insn = true;
1996 extra_data_len = 4;
1997 extra_data = ex.X_add_number;
1998 ex.X_add_number = 0;
1999 }
2000 /* end-sanitize-v850e */
2001 else if (register_name (& ex)
2002 && (operand->flags & V850_OPERAND_REG) == 0)
2003 {
2004 char c;
2005 int exists = 0;
2006
2007 /* It is possible that an alias has been defined that
2008 matches a register name. For example the code may
2009 include a ".set ZERO, 0" directive, which matches
2010 the register name "zero". Attempt to reparse the
2011 field as an expression, and only complain if we
2012 cannot generate a constant. */
2013
2014 input_line_pointer = str;
2015
2016 c = get_symbol_end();
2017
2018 if (symbol_find (str) != NULL)
2019 exists = 1;
2020
2021 * input_line_pointer = c;
2022 input_line_pointer = str;
2023
2024 expression (& ex);
2025
2026 if (ex.X_op != O_constant)
2027 {
2028 /* If this register is actually occuring too early on
2029 the parsing of the instruction, (because another
2030 field is missing) then report this. */
2031 if (opindex_ptr[1] != 0
2032 && (v850_operands [opindex_ptr [1]].flags & V850_OPERAND_REG))
2033 errmsg = _("syntax error: value is missing before the register name");
2034 else
2035 errmsg = _("syntax error: register not expected");
2036
2037 /* If we created a symbol in the process of this test then
2038 delete it now, so that it will not be output with the real
2039 symbols... */
2040 if (exists == 0
2041 && ex.X_op == O_symbol)
2042 symbol_remove (ex.X_add_symbol,
2043 & symbol_rootP, & symbol_lastP);
2044 }
2045 }
2046 else if (system_register_name (& ex, false
2047 /* start-sanitize-v850e */
2048 , false
2049 /* end-sanitize-v850e */
2050 )
2051 && (operand->flags & V850_OPERAND_SRG) == 0)
2052 {
2053 errmsg = _("syntax error: system register not expected");
2054 }
2055 else if (cc_name (&ex)
2056 && (operand->flags & V850_OPERAND_CC) == 0)
2057 {
2058 errmsg = _("syntax error: condition code not expected");
2059 }
2060 else
2061 {
2062 expression (& ex);
2063 /* start-sanitize-v850e */
2064 /* Special case:
2065 If we are assembling a MOV instruction (or a CALLT.... :-)
2066 and the immediate value does not fit into the bits
2067 available then create a fake error so that the next MOV
2068 instruction will be selected. This one has a 32 bit
2069 immediate field. */
2070
2071 if (((insn & 0x07e0) == 0x0200)
2072 && ex.X_op == O_constant
2073 && (ex.X_add_number < (- (1 << (operand->bits - 1)))
2074 || ex.X_add_number > ((1 << operand->bits) - 1)))
2075 errmsg = _("immediate operand is too large");
2076 /* end-sanitize-v850e */
2077 }
2078
2079 if (errmsg)
2080 goto error;
2081
2082 /* fprintf (stderr, " insn: %x, operand %d, op: %d, add_number: %d\n",
2083 insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number); */
2084
2085 switch (ex.X_op)
2086 {
2087 case O_illegal:
2088 errmsg = _("illegal operand");
2089 goto error;
2090 case O_absent:
2091 errmsg = _("missing operand");
2092 goto error;
2093 case O_register:
2094 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
2095 {
2096 errmsg = _("invalid operand");
2097 goto error;
2098 }
2099 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2100 (char *) NULL, 0,
2101 copy_of_instruction);
2102 break;
2103
2104 case O_constant:
2105 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2106 (char *) NULL, 0,
2107 copy_of_instruction);
2108 break;
2109
2110 default:
2111 /* We need to generate a fixup for this expression. */
2112 if (fc >= MAX_INSN_FIXUPS)
2113 as_fatal (_("too many fixups"));
2114
2115 fixups[ fc ].exp = ex;
2116 fixups[ fc ].opindex = * opindex_ptr;
2117 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
2118 ++fc;
2119 break;
2120 }
2121 }
2122
2123 str = input_line_pointer;
2124 input_line_pointer = hold;
2125
2126 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
2127 || *str == ')')
2128 ++str;
2129 }
2130 match = 1;
2131
2132 error:
2133 if (match == 0)
2134 {
2135 next_opcode = opcode + 1;
2136 if (next_opcode->name != NULL
2137 && strcmp (next_opcode->name, opcode->name) == 0)
2138 {
2139 opcode = next_opcode;
2140
2141 /* Skip versions that are not supported by the target
2142 processor. */
2143 if ((opcode->processors & processor_mask) == 0)
2144 goto error;
2145
2146 continue;
2147 }
2148
2149 as_bad ("%s: %s", copy_of_instruction, errmsg);
2150
2151 if (* input_line_pointer == ']')
2152 ++ input_line_pointer;
2153
2154 ignore_rest_of_line ();
2155 input_line_pointer = saved_input_line_pointer;
2156 return;
2157 }
2158 break;
2159 }
2160
2161 while (isspace (*str))
2162 ++str;
2163
2164 if (*str != '\0')
2165 /* xgettext:c-format */
2166 as_bad (_("junk at end of line: `%s'"), str);
2167
2168 input_line_pointer = str;
2169
2170 /* Write out the instruction. */
2171
2172 if (relaxable && fc > 0)
2173 {
2174 insn_size = 2;
2175 fc = 0;
2176
2177 if (!strcmp (opcode->name, "br"))
2178 {
2179 f = frag_var (rs_machine_dependent, 4, 2, 2,
2180 fixups[0].exp.X_add_symbol,
2181 fixups[0].exp.X_add_number,
2182 (char *)fixups[0].opindex);
2183 md_number_to_chars (f, insn, insn_size);
2184 md_number_to_chars (f + 2, 0, 2);
2185 }
2186 else
2187 {
2188 f = frag_var (rs_machine_dependent, 6, 4, 0,
2189 fixups[0].exp.X_add_symbol,
2190 fixups[0].exp.X_add_number,
2191 (char *)fixups[0].opindex);
2192 md_number_to_chars (f, insn, insn_size);
2193 md_number_to_chars (f + 2, 0, 4);
2194 }
2195 }
2196 else
2197 {
2198 /* Four byte insns have an opcode with the two high bits on. */
2199 if ((insn & 0x0600) == 0x0600)
2200 insn_size = 4;
2201 else
2202 insn_size = 2;
2203
2204 /* start-sanitize-v850e */
2205 /* Special case: 32 bit MOV */
2206 if ((insn & 0xffe0) == 0x0620)
2207 insn_size = 2;
2208 /* end-sanitize-v850e */
2209
2210 f = frag_more (insn_size);
2211
2212 md_number_to_chars (f, insn, insn_size);
2213
2214 if (extra_data_after_insn)
2215 {
2216 f = frag_more (extra_data_len);
2217
2218 md_number_to_chars (f, extra_data, extra_data_len);
2219
2220 extra_data_after_insn = false;
2221 }
2222 }
2223
2224 /* Create any fixups. At this point we do not use a
2225 bfd_reloc_code_real_type, but instead just use the
2226 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2227 handle fixups for any operand type, although that is admittedly
2228 not a very exciting feature. We pick a BFD reloc type in
2229 md_apply_fix. */
2230 for (i = 0; i < fc; i++)
2231 {
2232 const struct v850_operand * operand;
2233 bfd_reloc_code_real_type reloc;
2234
2235 operand = & v850_operands[ fixups[i].opindex ];
2236
2237 reloc = fixups[i].reloc;
2238
2239 if (reloc != BFD_RELOC_UNUSED)
2240 {
2241 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput,
2242 reloc);
2243 int size;
2244 int address;
2245 fixS * fixP;
2246
2247 if (!reloc_howto)
2248 abort();
2249
2250 size = bfd_get_reloc_size (reloc_howto);
2251
2252 /* XXX This will abort on an R_V850_8 reloc -
2253 is this reloc actually used ? */
2254 if (size != 2 && size != 4)
2255 abort();
2256
2257 address = (f - frag_now->fr_literal) + insn_size - size;
2258
2259 if (reloc == BFD_RELOC_32)
2260 {
2261 address += 2;
2262 }
2263
2264 fixP = fix_new_exp (frag_now, address, size,
2265 & fixups[i].exp,
2266 reloc_howto->pc_relative,
2267 reloc);
2268
2269 switch (reloc)
2270 {
2271 case BFD_RELOC_LO16:
2272 case BFD_RELOC_HI16:
2273 case BFD_RELOC_HI16_S:
2274 fixP->fx_no_overflow = 1;
2275 break;
2276 }
2277 }
2278 else
2279 {
2280 fix_new_exp (
2281 frag_now,
2282 f - frag_now->fr_literal, 4,
2283 & fixups[i].exp,
2284 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
2285 (bfd_reloc_code_real_type) (fixups[i].opindex
2286 + (int) BFD_RELOC_UNUSED)
2287 );
2288 }
2289 }
2290
2291 input_line_pointer = saved_input_line_pointer;
2292 }
2293
2294
2295 /* If while processing a fixup, a reloc really needs to be created */
2296 /* then it is done here. */
2297
2298 arelent *
2299 tc_gen_reloc (seg, fixp)
2300 asection * seg;
2301 fixS * fixp;
2302 {
2303 arelent * reloc;
2304
2305 reloc = (arelent *) xmalloc (sizeof (arelent));
2306 reloc->sym_ptr_ptr = & fixp->fx_addsy->bsym;
2307 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2308 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
2309
2310 if (reloc->howto == (reloc_howto_type *) NULL)
2311 {
2312 as_bad_where (fixp->fx_file, fixp->fx_line,
2313 /* xgettext:c-format */
2314 _("reloc %d not supported by object file format"),
2315 (int)fixp->fx_r_type);
2316
2317 xfree (reloc);
2318
2319 return NULL;
2320 }
2321
2322 reloc->addend = fixp->fx_addnumber;
2323
2324 return reloc;
2325 }
2326
2327 /* Assume everything will fit in two bytes, then expand as necessary. */
2328 int
2329 md_estimate_size_before_relax (fragp, seg)
2330 fragS * fragp;
2331 asection * seg;
2332 {
2333 if (fragp->fr_subtype == 0)
2334 fragp->fr_var = 4;
2335 else if (fragp->fr_subtype == 2)
2336 fragp->fr_var = 2;
2337 else
2338 abort ();
2339 return 2;
2340 }
2341
2342 long
2343 md_pcrel_from (fixp)
2344 fixS * fixp;
2345 {
2346 /* If the symbol is undefined, or in a section other than our own,
2347 then let the linker figure it out. */
2348 if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
2349 {
2350 /* The symbol is undefined. Let the linker figure it out. */
2351 return 0;
2352 }
2353 return fixp->fx_frag->fr_address + fixp->fx_where;
2354 }
2355
2356 int
2357 md_apply_fix3 (fixp, valuep, seg)
2358 fixS * fixp;
2359 valueT * valuep;
2360 segT seg;
2361 {
2362 valueT value;
2363 char * where;
2364
2365 if (fixp->fx_addsy == (symbolS *) NULL)
2366 {
2367 value = * valuep;
2368 fixp->fx_done = 1;
2369 }
2370 else if (fixp->fx_pcrel)
2371 value = * valuep;
2372 else
2373 {
2374 value = fixp->fx_offset;
2375 if (fixp->fx_subsy != (symbolS *) NULL)
2376 {
2377 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
2378 value -= S_GET_VALUE (fixp->fx_subsy);
2379 else
2380 {
2381 /* We don't actually support subtracting a symbol. */
2382 as_bad_where (fixp->fx_file, fixp->fx_line,
2383 _("expression too complex"));
2384 }
2385 }
2386 }
2387
2388 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
2389 {
2390 int opindex;
2391 const struct v850_operand * operand;
2392 unsigned long insn;
2393
2394 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
2395 operand = & v850_operands[ opindex ];
2396
2397 /* Fetch the instruction, insert the fully resolved operand
2398 value, and stuff the instruction back again.
2399
2400 Note the instruction has been stored in little endian
2401 format! */
2402 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2403
2404 insn = bfd_getl32 ((unsigned char *) where);
2405 insn = v850_insert_operand (insn, operand, (offsetT) value,
2406 fixp->fx_file, fixp->fx_line, NULL);
2407 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
2408
2409 if (fixp->fx_done)
2410 {
2411 /* Nothing else to do here. */
2412 return 1;
2413 }
2414
2415 /* Determine a BFD reloc value based on the operand information.
2416 We are only prepared to turn a few of the operands into relocs. */
2417
2418 if (operand->bits == 22)
2419 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
2420 else if (operand->bits == 9)
2421 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
2422 else
2423 {
2424 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
2425
2426 as_bad_where (fixp->fx_file, fixp->fx_line,
2427 _("unresolved expression that must be resolved"));
2428 fixp->fx_done = 1;
2429 return 1;
2430 }
2431 }
2432 else if (fixp->fx_done)
2433 {
2434 /* We still have to insert the value into memory! */
2435 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2436
2437 if (fixp->fx_size == 1)
2438 * where = value & 0xff;
2439 else if (fixp->fx_size == 2)
2440 bfd_putl16 (value & 0xffff, (unsigned char *) where);
2441 else if (fixp->fx_size == 4)
2442 bfd_putl32 (value, (unsigned char *) where);
2443 }
2444
2445 fixp->fx_addnumber = value;
2446 return 1;
2447 }
2448
2449 \f
2450 /* Parse a cons expression. We have to handle hi(), lo(), etc
2451 on the v850. */
2452 void
2453 parse_cons_expression_v850 (exp)
2454 expressionS *exp;
2455 {
2456 /* See if there's a reloc prefix like hi() we have to handle. */
2457 hold_cons_reloc = v850_reloc_prefix (NULL);
2458
2459 /* Do normal expression parsing. */
2460 expression (exp);
2461 }
2462
2463 /* Create a fixup for a cons expression. If parse_cons_expression_v850
2464 found a reloc prefix, then we use that reloc, else we choose an
2465 appropriate one based on the size of the expression. */
2466 void
2467 cons_fix_new_v850 (frag, where, size, exp)
2468 fragS *frag;
2469 int where;
2470 int size;
2471 expressionS *exp;
2472 {
2473 if (hold_cons_reloc == BFD_RELOC_UNUSED)
2474 {
2475 if (size == 4)
2476 hold_cons_reloc = BFD_RELOC_32;
2477 if (size == 2)
2478 hold_cons_reloc = BFD_RELOC_16;
2479 if (size == 1)
2480 hold_cons_reloc = BFD_RELOC_8;
2481 }
2482
2483 if (exp != NULL)
2484 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
2485 else
2486 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
2487 }
GDB Binutils - Deliverables
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