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