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Fix PR 17042 - Do not attempt to resolve offsets to symbols in other sections
[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
323 if (temp < 0)
324 {
325 temp = 0;
326 as_warn (_("Common alignment negative; 0 assumed"));
327 }
328 }
329
330 if (symbolP->local)
331 {
332 segT old_sec;
333 int old_subsec;
334 char * pfrag;
335 int align;
336 flagword applicable;
337
338 old_sec = now_seg;
339 old_subsec = now_subseg;
340
341 applicable = bfd_applicable_section_flags (stdoutput);
342
343 applicable &= SEC_ALLOC;
344
345 switch (area)
346 {
347 case AREA_SDA:
348 if (sbss_section == NULL)
349 {
350 sbss_section = subseg_new (".sbss", 0);
351
352 bfd_set_section_flags (stdoutput, sbss_section, applicable);
353
354 seg_info (sbss_section)->bss = 1;
355 }
356 break;
357
358 case AREA_ZDA:
359 if (zbss_section == NULL)
360 {
361 zbss_section = subseg_new (".zbss", 0);
362
363 bfd_set_section_flags (stdoutput, sbss_section, applicable);
364
365 seg_info (zbss_section)->bss = 1;
366 }
367 break;
368
369 case AREA_TDA:
370 if (tbss_section == NULL)
371 {
372 tbss_section = subseg_new (".tbss", 0);
373
374 bfd_set_section_flags (stdoutput, tbss_section, applicable);
375
376 seg_info (tbss_section)->bss = 1;
377 }
378 break;
379 }
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 /* Otherwise drop through and try parsing name normally. */
754 }
755
756 low = 0;
757 high = regcount - 1;
758
759 do
760 {
761 middle = (low + high) / 2;
762 cmp = strcasecmp (name, regs[middle].name);
763 if (cmp < 0)
764 high = middle - 1;
765 else if (cmp > 0)
766 low = middle + 1;
767 else
768 return regs[middle].value;
769 }
770 while (low <= high);
771 return -1;
772 }
773
774
775 /* Summary of register_name().
776 *
777 * in: Input_line_pointer points to 1st char of operand.
778 *
779 * out: A expressionS.
780 * The operand may have been a register: in this case, X_op == O_register,
781 * X_add_number is set to the register number, and truth is returned.
782 * Input_line_pointer->(next non-blank) char after operand, or is in
783 * its original state.
784 */
785 static boolean
786 register_name (expressionP)
787 expressionS * expressionP;
788 {
789 int reg_number;
790 char * name;
791 char * start;
792 char c;
793
794 /* Find the spelling of the operand */
795 start = name = input_line_pointer;
796
797 c = get_symbol_end ();
798
799 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT,
800 name, FALSE);
801
802 * input_line_pointer = c; /* put back the delimiting char */
803
804 /* look to see if it's in the register table */
805 if (reg_number >= 0)
806 {
807 expressionP->X_op = O_register;
808 expressionP->X_add_number = reg_number;
809
810 /* make the rest nice */
811 expressionP->X_add_symbol = NULL;
812 expressionP->X_op_symbol = NULL;
813
814 return true;
815 }
816 else
817 {
818 /* reset the line as if we had not done anything */
819 input_line_pointer = start;
820
821 return false;
822 }
823 }
824
825 /* Summary of system_register_name().
826 *
827 * in: Input_line_pointer points to 1st char of operand.
828 * expressionP points to an expression structure to be filled in.
829 * accept_numbers is true iff numerical register names may be used.
830 * start-sanitize-v850e
831 * accept_list_names is true iff the special names PS and SR may be
832 * accepted.
833 * end-sanitize-v850e
834 *
835 * out: A expressionS structure in expressionP.
836 * The operand may have been a register: in this case, X_op == O_register,
837 * X_add_number is set to the register number, and truth is returned.
838 * Input_line_pointer->(next non-blank) char after operand, or is in
839 * its original state.
840 */
841 static boolean
842 system_register_name (expressionP, accept_numbers
843 /* start-sanitize-v850e */
844 , accept_list_names
845 /* end-sanitize-v850e */
846 )
847 expressionS * expressionP;
848 boolean accept_numbers;
849 /* start-sanitize-v850e */
850 boolean accept_list_names;
851 /* end-sanitize-v850e */
852 {
853 int reg_number;
854 char * name;
855 char * start;
856 char c;
857
858 /* Find the spelling of the operand */
859 start = name = input_line_pointer;
860
861 c = get_symbol_end ();
862 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name,
863 accept_numbers);
864
865 * input_line_pointer = c; /* put back the delimiting char */
866
867 if (reg_number < 0
868 && accept_numbers)
869 {
870 input_line_pointer = start; /* reset input_line pointer */
871
872 if (isdigit (* input_line_pointer))
873 {
874 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
875
876 /* Make sure that the register number is allowable. */
877 if ( reg_number < 0
878 || reg_number > 5
879 /* start-sanitize-v850e */
880 && reg_number < 16
881 || reg_number > 20
882 /* end-sanitize-v850e */
883 )
884 {
885 reg_number = -1;
886 }
887 }
888 /* start-sanitize-v850e */
889 else if (accept_list_names)
890 {
891 c = get_symbol_end ();
892 reg_number = reg_name_search (system_list_registers,
893 SYSREGLIST_NAME_CNT, name, FALSE);
894
895 * input_line_pointer = c; /* put back the delimiting char */
896 }
897 /* end-sanitize-v850e */
898 }
899
900 /* look to see if it's in the register table */
901 if (reg_number >= 0)
902 {
903 expressionP->X_op = O_register;
904 expressionP->X_add_number = reg_number;
905
906 /* make the rest nice */
907 expressionP->X_add_symbol = NULL;
908 expressionP->X_op_symbol = NULL;
909
910 return true;
911 }
912 else
913 {
914 /* reset the line as if we had not done anything */
915 input_line_pointer = start;
916
917 return false;
918 }
919 }
920
921 /* Summary of cc_name().
922 *
923 * in: Input_line_pointer points to 1st char of operand.
924 *
925 * out: A expressionS.
926 * The operand may have been a register: in this case, X_op == O_register,
927 * X_add_number is set to the register number, and truth is returned.
928 * Input_line_pointer->(next non-blank) char after operand, or is in
929 * its original state.
930 */
931 static boolean
932 cc_name (expressionP)
933 expressionS * expressionP;
934 {
935 int reg_number;
936 char * name;
937 char * start;
938 char c;
939
940 /* Find the spelling of the operand */
941 start = name = input_line_pointer;
942
943 c = get_symbol_end ();
944 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE);
945
946 * input_line_pointer = c; /* put back the delimiting char */
947
948 /* look to see if it's in the register table */
949 if (reg_number >= 0)
950 {
951 expressionP->X_op = O_constant;
952 expressionP->X_add_number = reg_number;
953
954 /* make the rest nice */
955 expressionP->X_add_symbol = NULL;
956 expressionP->X_op_symbol = NULL;
957
958 return true;
959 }
960 else
961 {
962 /* reset the line as if we had not done anything */
963 input_line_pointer = start;
964
965 return false;
966 }
967 }
968
969 static void
970 skip_white_space (void)
971 {
972 while ( * input_line_pointer == ' '
973 || * input_line_pointer == '\t')
974 ++ input_line_pointer;
975 }
976
977 /* start-sanitize-v850e */
978 /* Summary of parse_register_list ().
979 *
980 * in: Input_line_pointer points to 1st char of a list of registers.
981 * insn is the partially constructed instruction.
982 * operand is the operand being inserted.
983 *
984 * out: NULL if the parse completed successfully, otherwise a
985 * pointer to an error message is returned. If the parse
986 * completes the correct bit fields in the instruction
987 * will be filled in.
988 *
989 * Parses register lists with the syntax:
990 *
991 * { rX }
992 * { rX, rY }
993 * { rX - rY }
994 * { rX - rY, rZ }
995 * etc
996 *
997 * and also parses constant epxressions whoes bits indicate the
998 * registers in the lists. The LSB in the expression refers to
999 * the lowest numbered permissable register in the register list,
1000 * and so on upwards. System registers are considered to be very
1001 * high numbers.
1002 *
1003 */
1004 static char *
1005 parse_register_list
1006 (
1007 unsigned long * insn,
1008 const struct v850_operand * operand
1009 )
1010 {
1011 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 };
1012 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 };
1013 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 };
1014 int * regs;
1015 expressionS exp;
1016
1017
1018 /* Select a register array to parse. */
1019 switch (operand->shift)
1020 {
1021 case 0xffe00001: regs = type1_regs; break;
1022 case 0xfff8000f: regs = type2_regs; break;
1023 case 0xfff8001f: regs = type3_regs; break;
1024 default:
1025 as_bad (_("unknown operand shift: %x\n"), operand->shift);
1026 return _("internal failure in parse_register_list");
1027 }
1028
1029 skip_white_space ();
1030
1031 /* If the expression starts with a curly brace it is a register list.
1032 Otherwise it is a constant expression, whoes bits indicate which
1033 registers are to be included in the list. */
1034
1035 if (* input_line_pointer != '{')
1036 {
1037 int bits;
1038 int reg;
1039 int i;
1040
1041 expression (& exp);
1042
1043 if (exp.X_op != O_constant)
1044 return _("constant expression or register list expected");
1045
1046 if (regs == type1_regs)
1047 {
1048 if (exp.X_add_number & 0xFFFFF000)
1049 return _("high bits set in register list expression");
1050
1051 for (reg = 20; reg < 32; reg ++)
1052 if (exp.X_add_number & (1 << (reg - 20)))
1053 {
1054 for (i = 0; i < 32; i++)
1055 if (regs[i] == reg)
1056 * insn |= (1 << i);
1057 }
1058 }
1059 else if (regs == type2_regs)
1060 {
1061 if (exp.X_add_number & 0xFFFE0000)
1062 return _("high bits set in register list expression");
1063
1064 for (reg = 1; reg < 16; reg ++)
1065 if (exp.X_add_number & (1 << (reg - 1)))
1066 {
1067 for (i = 0; i < 32; i++)
1068 if (regs[i] == reg)
1069 * insn |= (1 << i);
1070 }
1071
1072 if (exp.X_add_number & (1 << 15))
1073 * insn |= (1 << 3);
1074
1075 if (exp.X_add_number & (1 << 16))
1076 * insn |= (1 << 19);
1077 }
1078 else /* regs == type3_regs */
1079 {
1080 if (exp.X_add_number & 0xFFFE0000)
1081 return _("high bits set in register list expression");
1082
1083 for (reg = 16; reg < 32; reg ++)
1084 if (exp.X_add_number & (1 << (reg - 16)))
1085 {
1086 for (i = 0; i < 32; i++)
1087 if (regs[i] == reg)
1088 * insn |= (1 << i);
1089 }
1090
1091 if (exp.X_add_number & (1 << 16))
1092 * insn |= (1 << 19);
1093 }
1094
1095 return NULL;
1096 }
1097
1098 input_line_pointer ++;
1099
1100 /* Parse the register list until a terminator (closing curly brace or
1101 new-line) is found. */
1102 for (;;)
1103 {
1104 if (register_name (& exp))
1105 {
1106 int i;
1107
1108 /* Locate the given register in the list, and if it is there,
1109 insert the corresponding bit into the instruction. */
1110 for (i = 0; i < 32; i++)
1111 {
1112 if (regs[ i ] == exp.X_add_number)
1113 {
1114 * insn |= (1 << i);
1115 break;
1116 }
1117 }
1118
1119 if (i == 32)
1120 {
1121 return _("illegal register included in list");
1122 }
1123 }
1124 else if (system_register_name (& exp, true, true))
1125 {
1126 if (regs == type1_regs)
1127 {
1128 return _("system registers cannot be included in list");
1129 }
1130 else if (exp.X_add_number == 5)
1131 {
1132 if (regs == type2_regs)
1133 return _("PSW cannot be included in list");
1134 else
1135 * insn |= 0x8;
1136 }
1137 else if (exp.X_add_number < 4)
1138 * insn |= 0x80000;
1139 else
1140 return _("High value system registers cannot be included in list");
1141 }
1142 else if (* input_line_pointer == '}')
1143 {
1144 input_line_pointer ++;
1145 break;
1146 }
1147 else if (* input_line_pointer == ',')
1148 {
1149 input_line_pointer ++;
1150 continue;
1151 }
1152 else if (* input_line_pointer == '-')
1153 {
1154 /* We have encountered a range of registers: rX - rY */
1155 int j;
1156 expressionS exp2;
1157
1158 /* Skip the dash. */
1159 ++ input_line_pointer;
1160
1161 /* Get the second register in the range. */
1162 if (! register_name (& exp2))
1163 {
1164 return _("second register should follow dash in register list");
1165 exp2.X_add_number = exp.X_add_number;
1166 }
1167
1168 /* Add the rest of the registers in the range. */
1169 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
1170 {
1171 int i;
1172
1173 /* Locate the given register in the list, and if it is there,
1174 insert the corresponding bit into the instruction. */
1175 for (i = 0; i < 32; i++)
1176 {
1177 if (regs[ i ] == j)
1178 {
1179 * insn |= (1 << i);
1180 break;
1181 }
1182 }
1183
1184 if (i == 32)
1185 return _("illegal register included in list");
1186 }
1187 }
1188 else
1189 {
1190 break;
1191 }
1192
1193 skip_white_space ();
1194 }
1195
1196 return NULL;
1197 }
1198 /* end-sanitize-v850e */
1199
1200 CONST char * md_shortopts = "m:";
1201
1202 struct option md_longopts[] =
1203 {
1204 {NULL, no_argument, NULL, 0}
1205 };
1206 size_t md_longopts_size = sizeof md_longopts;
1207
1208
1209 void
1210 md_show_usage (stream)
1211 FILE * stream;
1212 {
1213 fprintf (stream, _(" V850 options:\n"));
1214 fprintf (stream, _(" -mwarn-signed-overflow Warn if signed immediate values overflow\n"));
1215 fprintf (stream, _(" -mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n"));
1216 fprintf (stream, _(" -mv850 The code is targeted at the v850\n"));
1217 /* start-sanitize-v850e */
1218 fprintf (stream, _(" -mv850e The code is targeted at the v850e\n"));
1219 fprintf (stream, _(" -mv850ea The code is targeted at the v850ea\n"));
1220 fprintf (stream, _(" -mv850any The code is generic, despite any processor specific instructions\n"));
1221 /* end-sanitize-v850e */
1222 }
1223
1224 int
1225 md_parse_option (c, arg)
1226 int c;
1227 char * arg;
1228 {
1229 if (c != 'm')
1230 {
1231 /* xgettext:c-format */
1232 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1233 return 0;
1234 }
1235
1236 if (strcmp (arg, "warn-signed-overflow") == 0)
1237 {
1238 warn_signed_overflows = TRUE;
1239 }
1240 else if (strcmp (arg, "warn-unsigned-overflow") == 0)
1241 {
1242 warn_unsigned_overflows = TRUE;
1243 }
1244 else if (strcmp (arg, "v850") == 0)
1245 {
1246 machine = 0;
1247 processor_mask = PROCESSOR_V850;
1248 }
1249 /* start-sanitize-v850e */
1250 else if (strcmp (arg, "v850e") == 0)
1251 {
1252 machine = bfd_mach_v850e;
1253 processor_mask = PROCESSOR_V850E;
1254 }
1255 else if (strcmp (arg, "v850ea") == 0)
1256 {
1257 machine = bfd_mach_v850ea;
1258 processor_mask = PROCESSOR_V850EA;
1259 }
1260 else if (strcmp (arg, "v850any") == 0)
1261 {
1262 machine = 0; /* Tell the world that this is for any v850 chip. */
1263 processor_mask = PROCESSOR_V850EA; /* But support instructions for the extended versions. */
1264 }
1265 /* end-sanitize-v850e */
1266 else
1267 {
1268 /* xgettext:c-format */
1269 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1270 return 0;
1271 }
1272
1273 return 1;
1274 }
1275
1276 symbolS *
1277 md_undefined_symbol (name)
1278 char * name;
1279 {
1280 return 0;
1281 }
1282
1283 char *
1284 md_atof (type, litp, sizep)
1285 int type;
1286 char * litp;
1287 int * sizep;
1288 {
1289 int prec;
1290 LITTLENUM_TYPE words[4];
1291 char * t;
1292 int i;
1293
1294 switch (type)
1295 {
1296 case 'f':
1297 prec = 2;
1298 break;
1299
1300 case 'd':
1301 prec = 4;
1302 break;
1303
1304 default:
1305 *sizep = 0;
1306 return _("bad call to md_atof");
1307 }
1308
1309 t = atof_ieee (input_line_pointer, type, words);
1310 if (t)
1311 input_line_pointer = t;
1312
1313 *sizep = prec * 2;
1314
1315 for (i = prec - 1; i >= 0; i--)
1316 {
1317 md_number_to_chars (litp, (valueT) words[i], 2);
1318 litp += 2;
1319 }
1320
1321 return NULL;
1322 }
1323
1324
1325 /* Very gross. */
1326 void
1327 md_convert_frag (abfd, sec, fragP)
1328 bfd * abfd;
1329 asection * sec;
1330 fragS * fragP;
1331 {
1332 subseg_change (sec, 0);
1333
1334 /* In range conditional or unconditional branch. */
1335 if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2)
1336 {
1337 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
1338 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
1339 fragP->fr_var = 0;
1340 fragP->fr_fix += 2;
1341 }
1342 /* Out of range conditional branch. Emit a branch around a jump. */
1343 else if (fragP->fr_subtype == 1)
1344 {
1345 unsigned char *buffer =
1346 (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
1347
1348 /* Reverse the condition of the first branch. */
1349 buffer[0] ^= 0x08;
1350 /* Mask off all the displacement bits. */
1351 buffer[0] &= 0x8f;
1352 buffer[1] &= 0x07;
1353 /* Now set the displacement bits so that we branch
1354 around the unconditional branch. */
1355 buffer[0] |= 0x30;
1356
1357 /* Now create the unconditional branch + fixup to the final
1358 target. */
1359 md_number_to_chars (buffer + 2, 0x00000780, 4);
1360 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
1361 fragP->fr_offset, 1, BFD_RELOC_UNUSED +
1362 (int) fragP->fr_opcode + 1);
1363 fragP->fr_var = 0;
1364 fragP->fr_fix += 6;
1365 }
1366 /* Out of range unconditional branch. Emit a jump. */
1367 else if (fragP->fr_subtype == 3)
1368 {
1369 md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4);
1370 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
1371 fragP->fr_offset, 1, BFD_RELOC_UNUSED +
1372 (int) fragP->fr_opcode + 1);
1373 fragP->fr_var = 0;
1374 fragP->fr_fix += 4;
1375 }
1376 else
1377 abort ();
1378 }
1379
1380 valueT
1381 md_section_align (seg, addr)
1382 asection * seg;
1383 valueT addr;
1384 {
1385 int align = bfd_get_section_alignment (stdoutput, seg);
1386 return ((addr + (1 << align) - 1) & (-1 << align));
1387 }
1388
1389 void
1390 md_begin ()
1391 {
1392 char * prev_name = "";
1393 register const struct v850_opcode * op;
1394 flagword applicable;
1395
1396 /* start-sanitize-v850e */
1397 if (strncmp (TARGET_CPU, "v850ea", 6) == 0)
1398 {
1399 if (machine == -1)
1400 machine = bfd_mach_v850ea;
1401
1402 if (processor_mask == -1)
1403 processor_mask = PROCESSOR_V850EA;
1404 }
1405 else if (strncmp (TARGET_CPU, "v850e", 5) == 0)
1406 {
1407 if (machine == -1)
1408 machine = bfd_mach_v850e;
1409
1410 if (processor_mask == -1)
1411 processor_mask = PROCESSOR_V850E;
1412 }
1413 else
1414 /* end-sanitize-v850e */
1415 if (strncmp (TARGET_CPU, "v850", 4) == 0)
1416 {
1417 if (machine == -1)
1418 machine = 0;
1419
1420 if (processor_mask == -1)
1421 processor_mask = PROCESSOR_V850;
1422 }
1423 else
1424 /* xgettext:c-format */
1425 as_bad (_("Unable to determine default target processor from string: %s"),
1426 TARGET_CPU);
1427
1428 v850_hash = hash_new();
1429
1430 /* Insert unique names into hash table. The V850 instruction set
1431 has many identical opcode names that have different opcodes based
1432 on the operands. This hash table then provides a quick index to
1433 the first opcode with a particular name in the opcode table. */
1434
1435 op = v850_opcodes;
1436 while (op->name)
1437 {
1438 if (strcmp (prev_name, op->name))
1439 {
1440 prev_name = (char *) op->name;
1441 hash_insert (v850_hash, op->name, (char *) op);
1442 }
1443 op++;
1444 }
1445
1446 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1447
1448 /* start-sanitize-v850e */
1449 applicable = bfd_applicable_section_flags (stdoutput);
1450
1451 call_table_data_section = subseg_new (".call_table_data", 0);
1452 bfd_set_section_flags (stdoutput, call_table_data_section,
1453 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1454 | SEC_DATA | SEC_HAS_CONTENTS));
1455
1456 call_table_text_section = subseg_new (".call_table_text", 0);
1457 bfd_set_section_flags (stdoutput, call_table_text_section,
1458 applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1459 | SEC_CODE));
1460
1461 /* Restore text section as the current default. */
1462 subseg_set (text_section, 0);
1463 /* end-sanitize-v850e */
1464 }
1465
1466
1467 /* start-sanitize-v850e */
1468 static bfd_reloc_code_real_type
1469 handle_ctoff (const struct v850_operand * operand)
1470 {
1471 if (operand == NULL)
1472 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1473
1474 if ( operand->bits != 6
1475 || operand->shift != 0)
1476 {
1477 as_bad (_("ctoff() relocation used on an instruction which does not support it"));
1478 return BFD_RELOC_64; /* Used to indicate an error condition. */
1479 }
1480
1481 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1482 }
1483 /* end-sanitize-v850e */
1484
1485 static bfd_reloc_code_real_type
1486 handle_sdaoff (const struct v850_operand * operand)
1487 {
1488 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1489 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1490 /* start-sanitize-v850e */
1491 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1492 /* end-sanitize-v850e */
1493
1494 if ( operand->bits != 16
1495 || operand->shift != 16)
1496 {
1497 as_bad (_("sdaoff() relocation used on an instruction which does not support it"));
1498 return BFD_RELOC_64; /* Used to indicate an error condition. */
1499 }
1500
1501 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1502 }
1503
1504 static bfd_reloc_code_real_type
1505 handle_zdaoff (const struct v850_operand * operand)
1506 {
1507 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1508 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1509 /* start-sanitize-v850e */
1510 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1511 /* end-sanitize-v850e */
1512
1513 if ( operand->bits != 16
1514 || operand->shift != 16)
1515 {
1516 as_bad (_("zdaoff() relocation used on an instruction which does not support it"));
1517 return BFD_RELOC_64; /* Used to indicate an error condition. */
1518 }
1519
1520 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1521 }
1522
1523 static bfd_reloc_code_real_type
1524 handle_tdaoff (const struct v850_operand * operand)
1525 {
1526 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1527 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1528 /* start-sanitize-v850e */
1529 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1530 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1531 /* end-sanitize-v850e */
1532 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1533
1534 if (operand->bits != 7)
1535 {
1536 as_bad (_("tdaoff() relocation used on an instruction which does not support it"));
1537 return BFD_RELOC_64; /* Used to indicate an error condition. */
1538 }
1539
1540 return operand->insert != NULL
1541 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1542 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1543 }
1544
1545 /* Warning: The code in this function relies upon the definitions
1546 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1547 matching the hard coded values contained herein. */
1548
1549 static bfd_reloc_code_real_type
1550 v850_reloc_prefix (const struct v850_operand * operand)
1551 {
1552 boolean paren_skipped = false;
1553
1554
1555 /* Skip leading opening parenthesis. */
1556 if (* input_line_pointer == '(')
1557 {
1558 ++ input_line_pointer;
1559 paren_skipped = true;
1560 }
1561
1562 #define CHECK_(name, reloc) \
1563 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1564 { \
1565 input_line_pointer += strlen (name); \
1566 return reloc; \
1567 }
1568
1569 CHECK_ ("hi0", BFD_RELOC_HI16);
1570 CHECK_ ("hi", BFD_RELOC_HI16_S);
1571 CHECK_ ("lo", BFD_RELOC_LO16);
1572 CHECK_ ("sdaoff", handle_sdaoff (operand));
1573 CHECK_ ("zdaoff", handle_zdaoff (operand));
1574 CHECK_ ("tdaoff", handle_tdaoff (operand));
1575
1576 /* start-sanitize-v850e */
1577 CHECK_ ("hilo", BFD_RELOC_32);
1578 CHECK_ ("ctoff", handle_ctoff (operand));
1579 /* end-sanitize-v850e */
1580
1581 /* Restore skipped parenthesis. */
1582 if (paren_skipped)
1583 -- input_line_pointer;
1584
1585 return BFD_RELOC_UNUSED;
1586 }
1587
1588 /* Insert an operand value into an instruction. */
1589
1590 static unsigned long
1591 v850_insert_operand (insn, operand, val, file, line, str)
1592 unsigned long insn;
1593 const struct v850_operand * operand;
1594 offsetT val;
1595 char * file;
1596 unsigned int line;
1597 char * str;
1598 {
1599 if (operand->insert)
1600 {
1601 const char * message = NULL;
1602
1603 insn = operand->insert (insn, val, & message);
1604 if (message != NULL)
1605 {
1606 if ((operand->flags & V850_OPERAND_SIGNED)
1607 && ! warn_signed_overflows
1608 && strstr (message, "out of range") != NULL)
1609 {
1610 /* skip warning... */
1611 }
1612 else if ((operand->flags & V850_OPERAND_SIGNED) == 0
1613 && ! warn_unsigned_overflows
1614 && strstr (message, "out of range") != NULL)
1615 {
1616 /* skip warning... */
1617 }
1618 else if (str)
1619 {
1620 if (file == (char *) NULL)
1621 as_warn ("%s: %s", str, message);
1622 else
1623 as_warn_where (file, line, "%s: %s", str, message);
1624 }
1625 else
1626 {
1627 if (file == (char *) NULL)
1628 as_warn (message);
1629 else
1630 as_warn_where (file, line, message);
1631 }
1632 }
1633 }
1634 else
1635 {
1636 if (operand->bits != 32)
1637 {
1638 long min, max;
1639 offsetT test;
1640
1641 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1642 {
1643 if (! warn_signed_overflows)
1644 max = (1 << operand->bits) - 1;
1645 else
1646 max = (1 << (operand->bits - 1)) - 1;
1647
1648 min = - (1 << (operand->bits - 1));
1649 }
1650 else
1651 {
1652 max = (1 << operand->bits) - 1;
1653
1654 if (! warn_unsigned_overflows)
1655 min = - (1 << (operand->bits - 1));
1656 else
1657 min = 0;
1658 }
1659
1660 if (val < (offsetT) min || val > (offsetT) max)
1661 {
1662 /* xgettext:c-format */
1663 const char * err = _("operand out of range (%s not between %ld and %ld)");
1664 char buf[100];
1665
1666 /* Restore min and mix to expected values for decimal ranges. */
1667 if ((operand->flags & V850_OPERAND_SIGNED)
1668 && ! warn_signed_overflows)
1669 max = (1 << (operand->bits - 1)) - 1;
1670
1671 if (! (operand->flags & V850_OPERAND_SIGNED)
1672 && ! warn_unsigned_overflows)
1673 min = 0;
1674
1675 if (str)
1676 {
1677 sprintf (buf, "%s: ", str);
1678
1679 sprint_value (buf + strlen (buf), val);
1680 }
1681 else
1682 sprint_value (buf, val);
1683
1684 if (file == (char *) NULL)
1685 as_warn (err, buf, min, max);
1686 else
1687 as_warn_where (file, line, err, buf, min, max);
1688 }
1689 }
1690
1691 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1692 }
1693
1694 return insn;
1695 }
1696
1697 \f
1698 static char copy_of_instruction [128];
1699
1700 void
1701 md_assemble (str)
1702 char * str;
1703 {
1704 char * s;
1705 char * start_of_operands;
1706 struct v850_opcode * opcode;
1707 struct v850_opcode * next_opcode;
1708 const unsigned char * opindex_ptr;
1709 int next_opindex;
1710 int relaxable;
1711 unsigned long insn;
1712 unsigned long insn_size;
1713 char * f;
1714 int i;
1715 int match;
1716 boolean extra_data_after_insn = false;
1717 unsigned extra_data_len;
1718 unsigned long extra_data;
1719 char * saved_input_line_pointer;
1720
1721
1722 strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1);
1723
1724 /* Get the opcode. */
1725 for (s = str; *s != '\0' && ! isspace (*s); s++)
1726 continue;
1727
1728 if (*s != '\0')
1729 *s++ = '\0';
1730
1731 /* find the first opcode with the proper name */
1732 opcode = (struct v850_opcode *) hash_find (v850_hash, str);
1733 if (opcode == NULL)
1734 {
1735 /* xgettext:c-format */
1736 as_bad (_("Unrecognized opcode: `%s'"), str);
1737 ignore_rest_of_line ();
1738 return;
1739 }
1740
1741 str = s;
1742 while (isspace (* str))
1743 ++ str;
1744
1745 start_of_operands = str;
1746
1747 saved_input_line_pointer = input_line_pointer;
1748
1749 for (;;)
1750 {
1751 const char * errmsg = NULL;
1752
1753 match = 0;
1754
1755 if ((opcode->processors & processor_mask) == 0)
1756 {
1757 errmsg = _("Target processor does not support this instruction.");
1758 goto error;
1759 }
1760
1761 relaxable = 0;
1762 fc = 0;
1763 next_opindex = 0;
1764 insn = opcode->opcode;
1765 extra_data_after_insn = false;
1766
1767 input_line_pointer = str = start_of_operands;
1768
1769 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr ++)
1770 {
1771 const struct v850_operand * operand;
1772 char * hold;
1773 expressionS ex;
1774 bfd_reloc_code_real_type reloc;
1775
1776 if (next_opindex == 0)
1777 {
1778 operand = & v850_operands[ * opindex_ptr ];
1779 }
1780 else
1781 {
1782 operand = & v850_operands[ next_opindex ];
1783 next_opindex = 0;
1784 }
1785
1786 errmsg = NULL;
1787
1788 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1789 ++ str;
1790
1791 if (operand->flags & V850_OPERAND_RELAX)
1792 relaxable = 1;
1793
1794 /* Gather the operand. */
1795 hold = input_line_pointer;
1796 input_line_pointer = str;
1797
1798 /* lo(), hi(), hi0(), etc... */
1799 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1800 {
1801 /* This is a fake reloc, used to indicate an error condition. */
1802 if (reloc == BFD_RELOC_64)
1803 {
1804 match = 1;
1805 goto error;
1806 }
1807
1808 expression (& ex);
1809
1810 if (ex.X_op == O_constant)
1811 {
1812 switch (reloc)
1813 {
1814 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1815 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]"
1816 and the like. */
1817 /* Fall through. */
1818
1819 case BFD_RELOC_LO16:
1820 {
1821 /* Truncate, then sign extend the value. */
1822 ex.X_add_number = SEXT16 (ex.X_add_number);
1823 break;
1824 }
1825
1826 case BFD_RELOC_HI16:
1827 {
1828 /* Truncate, then sign extend the value. */
1829 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1830 break;
1831 }
1832
1833 case BFD_RELOC_HI16_S:
1834 {
1835 /* Truncate, then sign extend the value. */
1836 int temp = (ex.X_add_number >> 16) & 0xffff;
1837
1838 temp += (ex.X_add_number >> 15) & 1;
1839
1840 ex.X_add_number = SEXT16 (temp);
1841 break;
1842 }
1843
1844 /* start-sanitize-v850e */
1845 case BFD_RELOC_32:
1846 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1847 {
1848 errmsg = _("immediate operand is too large");
1849 goto error;
1850 }
1851
1852 extra_data_after_insn = true;
1853 extra_data_len = 4;
1854 extra_data = ex.X_add_number;
1855 ex.X_add_number = 0;
1856 break;
1857 /* end-sanitize-v850e */
1858
1859 default:
1860 fprintf (stderr, "reloc: %d\n", reloc);
1861 as_bad (_("AAARG -> unhandled constant reloc"));
1862 break;
1863 }
1864
1865 if (fc > MAX_INSN_FIXUPS)
1866 as_fatal (_("too many fixups"));
1867
1868 fixups[ fc ].exp = ex;
1869 fixups[ fc ].opindex = * opindex_ptr;
1870 fixups[ fc ].reloc = reloc;
1871 fc++;
1872 }
1873 else
1874 {
1875 /* start-sanitize-v850e */
1876 if (reloc == BFD_RELOC_32)
1877 {
1878 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1879 {
1880 errmsg = _("immediate operand is too large");
1881 goto error;
1882 }
1883
1884 extra_data_after_insn = true;
1885 extra_data_len = 4;
1886 extra_data = ex.X_add_number;
1887 }
1888 /* end-sanitize-v850e */
1889
1890 if (fc > MAX_INSN_FIXUPS)
1891 as_fatal (_("too many fixups"));
1892
1893 fixups[ fc ].exp = ex;
1894 fixups[ fc ].opindex = * opindex_ptr;
1895 fixups[ fc ].reloc = reloc;
1896 fc++;
1897 }
1898 }
1899 else
1900 {
1901 errmsg = NULL;
1902
1903 if ((operand->flags & V850_OPERAND_REG) != 0)
1904 {
1905 if (!register_name (& ex))
1906 {
1907 errmsg = _("invalid register name");
1908 }
1909 else if ((operand->flags & V850_NOT_R0)
1910 && ex.X_add_number == 0)
1911 {
1912 errmsg = _("register r0 cannot be used here");
1913
1914 /* Force an error message to be generated by
1915 skipping over any following potential matches
1916 for this opcode. */
1917 opcode += 3;
1918 }
1919 }
1920 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1921 {
1922 if (!system_register_name (& ex, true
1923 /* start-sanitize-v850e */
1924 , false
1925 /* end-sanitize-v850e */
1926 ))
1927 {
1928 errmsg = _("invalid system register name");
1929 }
1930 }
1931 else if ((operand->flags & V850_OPERAND_EP) != 0)
1932 {
1933 char * start = input_line_pointer;
1934 char c = get_symbol_end ();
1935
1936 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1937 {
1938 /* Put things back the way we found them. */
1939 *input_line_pointer = c;
1940 input_line_pointer = start;
1941 errmsg = _("expected EP register");
1942 goto error;
1943 }
1944
1945 *input_line_pointer = c;
1946 str = input_line_pointer;
1947 input_line_pointer = hold;
1948
1949 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1950 ++ str;
1951 continue;
1952 }
1953 else if ((operand->flags & V850_OPERAND_CC) != 0)
1954 {
1955 if (!cc_name (& ex))
1956 {
1957 errmsg = _("invalid condition code name");
1958 }
1959 }
1960 /* start-sanitize-v850e */
1961 else if (operand->flags & V850E_PUSH_POP)
1962 {
1963 errmsg = parse_register_list (& insn, operand);
1964
1965 /* The parse_register_list() function has already done
1966 everything, so fake a dummy expression. */
1967 ex.X_op = O_constant;
1968 ex.X_add_number = 0;
1969 }
1970 else if (operand->flags & V850E_IMMEDIATE16)
1971 {
1972 expression (& ex);
1973
1974 if (ex.X_op != O_constant)
1975 errmsg = _("constant expression expected");
1976 else if (ex.X_add_number & 0xffff0000)
1977 {
1978 if (ex.X_add_number & 0xffff)
1979 errmsg = _("constant too big to fit into instruction");
1980 else if ((insn & 0x001fffc0) == 0x00130780)
1981 ex.X_add_number >>= 16;
1982 else
1983 errmsg = _("constant too big to fit into instruction");
1984 }
1985
1986 extra_data_after_insn = true;
1987 extra_data_len = 2;
1988 extra_data = ex.X_add_number;
1989 ex.X_add_number = 0;
1990 }
1991 else if (operand->flags & V850E_IMMEDIATE32)
1992 {
1993 expression (& ex);
1994
1995 if (ex.X_op != O_constant)
1996 errmsg = _("constant expression expected");
1997
1998 extra_data_after_insn = true;
1999 extra_data_len = 4;
2000 extra_data = ex.X_add_number;
2001 ex.X_add_number = 0;
2002 }
2003 /* end-sanitize-v850e */
2004 else if (register_name (& ex)
2005 && (operand->flags & V850_OPERAND_REG) == 0)
2006 {
2007 char c;
2008 int exists = 0;
2009
2010 /* It is possible that an alias has been defined that
2011 matches a register name. For example the code may
2012 include a ".set ZERO, 0" directive, which matches
2013 the register name "zero". Attempt to reparse the
2014 field as an expression, and only complain if we
2015 cannot generate a constant. */
2016
2017 input_line_pointer = str;
2018
2019 c = get_symbol_end ();
2020
2021 if (symbol_find (str) != NULL)
2022 exists = 1;
2023
2024 * input_line_pointer = c;
2025 input_line_pointer = str;
2026
2027 expression (& ex);
2028
2029 if (ex.X_op != O_constant)
2030 {
2031 /* If this register is actually occuring too early on
2032 the parsing of the instruction, (because another
2033 field is missing) then report this. */
2034 if (opindex_ptr[1] != 0
2035 && (v850_operands [opindex_ptr [1]].flags & V850_OPERAND_REG))
2036 errmsg = _("syntax error: value is missing before the register name");
2037 else
2038 errmsg = _("syntax error: register not expected");
2039
2040 /* If we created a symbol in the process of this test then
2041 delete it now, so that it will not be output with the real
2042 symbols... */
2043 if (exists == 0
2044 && ex.X_op == O_symbol)
2045 symbol_remove (ex.X_add_symbol,
2046 & symbol_rootP, & symbol_lastP);
2047 }
2048 }
2049 else if (system_register_name (& ex, false
2050 /* start-sanitize-v850e */
2051 , false
2052 /* end-sanitize-v850e */
2053 )
2054 && (operand->flags & V850_OPERAND_SRG) == 0)
2055 {
2056 errmsg = _("syntax error: system register not expected");
2057 }
2058 else if (cc_name (&ex)
2059 && (operand->flags & V850_OPERAND_CC) == 0)
2060 {
2061 errmsg = _("syntax error: condition code not expected");
2062 }
2063 else
2064 {
2065 expression (& ex);
2066 /* start-sanitize-v850e */
2067 /* Special case:
2068 If we are assembling a MOV instruction (or a CALLT.... :-)
2069 and the immediate value does not fit into the bits
2070 available then create a fake error so that the next MOV
2071 instruction will be selected. This one has a 32 bit
2072 immediate field. */
2073
2074 if (((insn & 0x07e0) == 0x0200)
2075 && ex.X_op == O_constant
2076 && (ex.X_add_number < (- (1 << (operand->bits - 1)))
2077 || ex.X_add_number > ((1 << operand->bits) - 1)))
2078 errmsg = _("immediate operand is too large");
2079 /* end-sanitize-v850e */
2080 }
2081
2082 if (errmsg)
2083 goto error;
2084
2085 /* fprintf (stderr, " insn: %x, operand %d, op: %d, add_number: %d\n",
2086 insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number); */
2087
2088 switch (ex.X_op)
2089 {
2090 case O_illegal:
2091 errmsg = _("illegal operand");
2092 goto error;
2093 case O_absent:
2094 errmsg = _("missing operand");
2095 goto error;
2096 case O_register:
2097 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
2098 {
2099 errmsg = _("invalid operand");
2100 goto error;
2101 }
2102 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2103 (char *) NULL, 0,
2104 copy_of_instruction);
2105 break;
2106
2107 case O_constant:
2108 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2109 (char *) NULL, 0,
2110 copy_of_instruction);
2111 break;
2112
2113 default:
2114 /* We need to generate a fixup for this expression. */
2115 if (fc >= MAX_INSN_FIXUPS)
2116 as_fatal (_("too many fixups"));
2117
2118 fixups[ fc ].exp = ex;
2119 fixups[ fc ].opindex = * opindex_ptr;
2120 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
2121 ++fc;
2122 break;
2123 }
2124 }
2125
2126 str = input_line_pointer;
2127 input_line_pointer = hold;
2128
2129 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
2130 || *str == ')')
2131 ++str;
2132 }
2133 match = 1;
2134
2135 error:
2136 if (match == 0)
2137 {
2138 next_opcode = opcode + 1;
2139 if (next_opcode->name != NULL
2140 && strcmp (next_opcode->name, opcode->name) == 0)
2141 {
2142 opcode = next_opcode;
2143
2144 /* Skip versions that are not supported by the target
2145 processor. */
2146 if ((opcode->processors & processor_mask) == 0)
2147 goto error;
2148
2149 continue;
2150 }
2151
2152 as_bad ("%s: %s", copy_of_instruction, errmsg);
2153
2154 if (* input_line_pointer == ']')
2155 ++ input_line_pointer;
2156
2157 ignore_rest_of_line ();
2158 input_line_pointer = saved_input_line_pointer;
2159 return;
2160 }
2161 break;
2162 }
2163
2164 while (isspace (*str))
2165 ++str;
2166
2167 if (*str != '\0')
2168 /* xgettext:c-format */
2169 as_bad (_("junk at end of line: `%s'"), str);
2170
2171 input_line_pointer = str;
2172
2173 /* Write out the instruction. */
2174
2175 if (relaxable && fc > 0)
2176 {
2177 insn_size = 2;
2178 fc = 0;
2179
2180 if (!strcmp (opcode->name, "br"))
2181 {
2182 f = frag_var (rs_machine_dependent, 4, 2, 2,
2183 fixups[0].exp.X_add_symbol,
2184 fixups[0].exp.X_add_number,
2185 (char *)fixups[0].opindex);
2186 md_number_to_chars (f, insn, insn_size);
2187 md_number_to_chars (f + 2, 0, 2);
2188 }
2189 else
2190 {
2191 f = frag_var (rs_machine_dependent, 6, 4, 0,
2192 fixups[0].exp.X_add_symbol,
2193 fixups[0].exp.X_add_number,
2194 (char *)fixups[0].opindex);
2195 md_number_to_chars (f, insn, insn_size);
2196 md_number_to_chars (f + 2, 0, 4);
2197 }
2198 }
2199 else
2200 {
2201 /* Four byte insns have an opcode with the two high bits on. */
2202 if ((insn & 0x0600) == 0x0600)
2203 insn_size = 4;
2204 else
2205 insn_size = 2;
2206
2207 /* start-sanitize-v850e */
2208 /* Special case: 32 bit MOV */
2209 if ((insn & 0xffe0) == 0x0620)
2210 insn_size = 2;
2211 /* end-sanitize-v850e */
2212
2213 f = frag_more (insn_size);
2214
2215 md_number_to_chars (f, insn, insn_size);
2216
2217 if (extra_data_after_insn)
2218 {
2219 f = frag_more (extra_data_len);
2220
2221 md_number_to_chars (f, extra_data, extra_data_len);
2222
2223 extra_data_after_insn = false;
2224 }
2225 }
2226
2227 /* Create any fixups. At this point we do not use a
2228 bfd_reloc_code_real_type, but instead just use the
2229 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2230 handle fixups for any operand type, although that is admittedly
2231 not a very exciting feature. We pick a BFD reloc type in
2232 md_apply_fix. */
2233 for (i = 0; i < fc; i++)
2234 {
2235 const struct v850_operand * operand;
2236 bfd_reloc_code_real_type reloc;
2237
2238 operand = & v850_operands[ fixups[i].opindex ];
2239
2240 reloc = fixups[i].reloc;
2241
2242 if (reloc != BFD_RELOC_UNUSED)
2243 {
2244 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput,
2245 reloc);
2246 int size;
2247 int address;
2248 fixS * fixP;
2249
2250 if (!reloc_howto)
2251 abort();
2252
2253 size = bfd_get_reloc_size (reloc_howto);
2254
2255 /* XXX This will abort on an R_V850_8 reloc -
2256 is this reloc actually used ? */
2257 if (size != 2 && size != 4)
2258 abort ();
2259
2260 address = (f - frag_now->fr_literal) + insn_size - size;
2261
2262 if (reloc == BFD_RELOC_32)
2263 {
2264 address += 2;
2265 }
2266
2267 fixP = fix_new_exp (frag_now, address, size,
2268 & fixups[i].exp,
2269 reloc_howto->pc_relative,
2270 reloc);
2271
2272 switch (reloc)
2273 {
2274 case BFD_RELOC_LO16:
2275 case BFD_RELOC_HI16:
2276 case BFD_RELOC_HI16_S:
2277 fixP->fx_no_overflow = 1;
2278 break;
2279 }
2280 }
2281 else
2282 {
2283 fix_new_exp (
2284 frag_now,
2285 f - frag_now->fr_literal, 4,
2286 & fixups[i].exp,
2287 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
2288 (bfd_reloc_code_real_type) (fixups[i].opindex
2289 + (int) BFD_RELOC_UNUSED)
2290 );
2291 }
2292 }
2293
2294 input_line_pointer = saved_input_line_pointer;
2295 }
2296
2297
2298 /* If while processing a fixup, a reloc really needs to be created */
2299 /* then it is done here. */
2300
2301 arelent *
2302 tc_gen_reloc (seg, fixp)
2303 asection * seg;
2304 fixS * fixp;
2305 {
2306 arelent * reloc;
2307
2308 reloc = (arelent *) xmalloc (sizeof (arelent));
2309 reloc->sym_ptr_ptr = & fixp->fx_addsy->bsym;
2310 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2311 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
2312
2313 if (reloc->howto == (reloc_howto_type *) NULL)
2314 {
2315 as_bad_where (fixp->fx_file, fixp->fx_line,
2316 /* xgettext:c-format */
2317 _("reloc %d not supported by object file format"),
2318 (int) fixp->fx_r_type);
2319
2320 xfree (reloc);
2321
2322 return NULL;
2323 }
2324
2325 reloc->addend = fixp->fx_addnumber;
2326
2327 return reloc;
2328 }
2329
2330 /* Assume everything will fit in two bytes, then expand as necessary. */
2331 int
2332 md_estimate_size_before_relax (fragp, seg)
2333 fragS * fragp;
2334 asection * seg;
2335 {
2336 if (fragp->fr_subtype == 0)
2337 fragp->fr_var = 4;
2338 else if (fragp->fr_subtype == 2)
2339 fragp->fr_var = 2;
2340 else
2341 abort ();
2342 return 2;
2343 }
2344
2345 long
2346 v850_pcrel_from_section (fixp, section)
2347 fixS * fixp;
2348 segT section;
2349 {
2350 /* If the symbol is undefined, or in a section other than our own,
2351 then let the linker figure it out. */
2352 if (fixp->fx_addsy != (symbolS *) NULL
2353 && (! S_IS_DEFINED (fixp->fx_addsy)
2354 || (S_GET_SEGMENT (fixp->fx_addsy) != section)))
2355 {
2356 /* The symbol is undefined/not in our section.
2357 Let the linker figure it out. */
2358 return 0;
2359 }
2360
2361 return fixp->fx_frag->fr_address + fixp->fx_where;
2362 }
2363
2364 int
2365 md_apply_fix3 (fixp, valuep, seg)
2366 fixS * fixp;
2367 valueT * valuep;
2368 segT seg;
2369 {
2370 valueT value;
2371 char * where;
2372
2373 if (fixp->fx_addsy == (symbolS *) NULL)
2374 {
2375 value = * valuep;
2376 fixp->fx_done = 1;
2377 }
2378 else if (fixp->fx_pcrel)
2379 value = * valuep;
2380 else
2381 {
2382 value = fixp->fx_offset;
2383 if (fixp->fx_subsy != (symbolS *) NULL)
2384 {
2385 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
2386 value -= S_GET_VALUE (fixp->fx_subsy);
2387 else
2388 {
2389 /* We don't actually support subtracting a symbol. */
2390 as_bad_where (fixp->fx_file, fixp->fx_line,
2391 _("expression too complex"));
2392 }
2393 }
2394 }
2395
2396 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
2397 {
2398 int opindex;
2399 const struct v850_operand * operand;
2400 unsigned long insn;
2401
2402 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
2403 operand = & v850_operands[ opindex ];
2404
2405 /* Fetch the instruction, insert the fully resolved operand
2406 value, and stuff the instruction back again.
2407
2408 Note the instruction has been stored in little endian
2409 format! */
2410 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2411
2412 insn = bfd_getl32 ((unsigned char *) where);
2413 insn = v850_insert_operand (insn, operand, (offsetT) value,
2414 fixp->fx_file, fixp->fx_line, NULL);
2415 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
2416
2417 if (fixp->fx_done)
2418 {
2419 /* Nothing else to do here. */
2420 return 1;
2421 }
2422
2423 /* Determine a BFD reloc value based on the operand information.
2424 We are only prepared to turn a few of the operands into relocs. */
2425
2426 if (operand->bits == 22)
2427 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
2428 else if (operand->bits == 9)
2429 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
2430 else
2431 {
2432 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
2433
2434 as_bad_where (fixp->fx_file, fixp->fx_line,
2435 _("unresolved expression that must be resolved"));
2436 fixp->fx_done = 1;
2437 return 1;
2438 }
2439 }
2440 else if (fixp->fx_done)
2441 {
2442 /* We still have to insert the value into memory! */
2443 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2444
2445 if (fixp->fx_size == 1)
2446 * where = value & 0xff;
2447 else if (fixp->fx_size == 2)
2448 bfd_putl16 (value & 0xffff, (unsigned char *) where);
2449 else if (fixp->fx_size == 4)
2450 bfd_putl32 (value, (unsigned char *) where);
2451 }
2452
2453 fixp->fx_addnumber = value;
2454 return 1;
2455 }
2456
2457 \f
2458 /* Parse a cons expression. We have to handle hi(), lo(), etc
2459 on the v850. */
2460 void
2461 parse_cons_expression_v850 (exp)
2462 expressionS *exp;
2463 {
2464 /* See if there's a reloc prefix like hi() we have to handle. */
2465 hold_cons_reloc = v850_reloc_prefix (NULL);
2466
2467 /* Do normal expression parsing. */
2468 expression (exp);
2469 }
2470
2471 /* Create a fixup for a cons expression. If parse_cons_expression_v850
2472 found a reloc prefix, then we use that reloc, else we choose an
2473 appropriate one based on the size of the expression. */
2474 void
2475 cons_fix_new_v850 (frag, where, size, exp)
2476 fragS *frag;
2477 int where;
2478 int size;
2479 expressionS *exp;
2480 {
2481 if (hold_cons_reloc == BFD_RELOC_UNUSED)
2482 {
2483 if (size == 4)
2484 hold_cons_reloc = BFD_RELOC_32;
2485 if (size == 2)
2486 hold_cons_reloc = BFD_RELOC_16;
2487 if (size == 1)
2488 hold_cons_reloc = BFD_RELOC_8;
2489 }
2490
2491 if (exp != NULL)
2492 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
2493 else
2494 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
2495 }
GDB Binutils - Deliverables
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