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Mon Jun 8 09:45:00 1998 Catherine Moore <clm@cygnus.com>
[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 /* just after name is now '\0' */
259 p = input_line_pointer;
260 *p = c;
261 SKIP_WHITESPACE ();
262 if (*input_line_pointer != ',')
263 {
264 as_bad (_("Expected comma after symbol-name"));
265 ignore_rest_of_line ();
266 return;
267 }
268 input_line_pointer++; /* skip ',' */
269 if ((temp = get_absolute_expression ()) < 0)
270 {
271 as_bad (_(".COMMon length (%d.) <0! Ignored."), temp);
272 ignore_rest_of_line ();
273 return;
274 }
275 size = temp;
276 *p = 0;
277 symbolP = symbol_find_or_make (name);
278 *p = c;
279 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
280 {
281 as_bad (_("Ignoring attempt to re-define symbol"));
282 ignore_rest_of_line ();
283 return;
284 }
285 if (S_GET_VALUE (symbolP) != 0)
286 {
287 if (S_GET_VALUE (symbolP) != size)
288 {
289 /* xgettext:c-format */
290 as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."),
291 S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size);
292 }
293 }
294 know (symbolP->sy_frag == &zero_address_frag);
295 if (*input_line_pointer != ',')
296 have_align = 0;
297 else
298 {
299 have_align = 1;
300 input_line_pointer++;
301 SKIP_WHITESPACE ();
302 }
303 if (! have_align || *input_line_pointer != '"')
304 {
305 if (! have_align)
306 temp = 0;
307 else
308 {
309 temp = get_absolute_expression ();
310 if (temp < 0)
311 {
312 temp = 0;
313 as_warn (_("Common alignment negative; 0 assumed"));
314 }
315 }
316 if (symbolP->local)
317 {
318 segT old_sec;
319 int old_subsec;
320 char * pfrag;
321 int align;
322
323 /* allocate_bss: */
324 old_sec = now_seg;
325 old_subsec = now_subseg;
326 if (temp)
327 {
328 /* convert to a power of 2 alignment */
329 for (align = 0; (temp & 1) == 0; temp >>= 1, ++align);
330 if (temp != 1)
331 {
332 as_bad (_("Common alignment not a power of 2"));
333 ignore_rest_of_line ();
334 return;
335 }
336 }
337 else
338 align = 0;
339 switch (area)
340 {
341 case AREA_SDA:
342 record_alignment (sbss_section, align);
343 obj_elf_section_change_hook();
344 subseg_set (sbss_section, 0);
345 break;
346
347 case AREA_ZDA:
348 record_alignment (zbss_section, align);
349 obj_elf_section_change_hook();
350 subseg_set (zbss_section, 0);
351 break;
352
353 case AREA_TDA:
354 record_alignment (tbss_section, align);
355 obj_elf_section_change_hook();
356 subseg_set (tbss_section, 0);
357 break;
358
359 default:
360 abort();
361 }
362
363 if (align)
364 frag_align (align, 0, 0);
365
366 switch (area)
367 {
368 case AREA_SDA:
369 if (S_GET_SEGMENT (symbolP) == sbss_section)
370 symbolP->sy_frag->fr_symbol = 0;
371 break;
372
373 case AREA_ZDA:
374 if (S_GET_SEGMENT (symbolP) == zbss_section)
375 symbolP->sy_frag->fr_symbol = 0;
376 break;
377
378 case AREA_TDA:
379 if (S_GET_SEGMENT (symbolP) == tbss_section)
380 symbolP->sy_frag->fr_symbol = 0;
381 break;
382
383 default:
384 abort();
385 }
386
387 symbolP->sy_frag = frag_now;
388 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
389 (offsetT) size, (char *) 0);
390 *pfrag = 0;
391 S_SET_SIZE (symbolP, size);
392
393 switch (area)
394 {
395 case AREA_SDA: S_SET_SEGMENT (symbolP, sbss_section); break;
396 case AREA_ZDA: S_SET_SEGMENT (symbolP, zbss_section); break;
397 case AREA_TDA: S_SET_SEGMENT (symbolP, tbss_section); break;
398 default:
399 abort();
400 }
401
402 S_CLEAR_EXTERNAL (symbolP);
403 obj_elf_section_change_hook();
404 subseg_set (old_sec, old_subsec);
405 }
406 else
407 {
408 allocate_common:
409 S_SET_VALUE (symbolP, (valueT) size);
410 S_SET_ALIGN (symbolP, temp);
411 S_SET_EXTERNAL (symbolP);
412
413 switch (area)
414 {
415 case AREA_SDA: S_SET_SEGMENT (symbolP, scommon_section); break;
416 case AREA_ZDA: S_SET_SEGMENT (symbolP, zcommon_section); break;
417 case AREA_TDA: S_SET_SEGMENT (symbolP, tcommon_section); break;
418 default:
419 abort();
420 }
421 }
422 }
423 else
424 {
425 input_line_pointer++;
426 /* @@ Some use the dot, some don't. Can we get some consistency?? */
427 if (*input_line_pointer == '.')
428 input_line_pointer++;
429 /* @@ Some say data, some say bss. */
430 if (strncmp (input_line_pointer, "bss\"", 4)
431 && strncmp (input_line_pointer, "data\"", 5))
432 {
433 while (*--input_line_pointer != '"')
434 ;
435 input_line_pointer--;
436 goto bad_common_segment;
437 }
438 while (*input_line_pointer++ != '"')
439 ;
440 goto allocate_common;
441 }
442
443 symbolP->bsym->flags |= BSF_OBJECT;
444
445 demand_empty_rest_of_line ();
446 return;
447
448 {
449 bad_common_segment:
450 p = input_line_pointer;
451 while (*p && *p != '\n')
452 p++;
453 c = *p;
454 *p = '\0';
455 as_bad (_("bad .common segment %s"), input_line_pointer + 1);
456 *p = c;
457 input_line_pointer = p;
458 ignore_rest_of_line ();
459 return;
460 }
461 }
462
463 void
464 set_machine (int number)
465 {
466 machine = number;
467 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
468
469 switch (machine)
470 {
471 case 0: processor_mask = PROCESSOR_V850; break;
472 /* start-sanitize-v850e */
473 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
474 case bfd_mach_v850ea: processor_mask = PROCESSOR_V850EA; break;
475 /* end-sanitize-v850e */
476 }
477 }
478
479 /* The target specific pseudo-ops which we support. */
480 const pseudo_typeS md_pseudo_table[] =
481 {
482 {"sdata", v850_sdata, 0},
483 {"tdata", v850_tdata, 0},
484 {"zdata", v850_zdata, 0},
485 {"sbss", v850_sbss, 0},
486 {"tbss", v850_tbss, 0},
487 {"zbss", v850_zbss, 0},
488 {"rosdata", v850_rosdata, 0},
489 {"rozdata", v850_rozdata, 0},
490 {"bss", v850_bss, 0},
491 {"offset", v850_offset, 0},
492 {"word", cons, 4},
493 {"zcomm", v850_comm, AREA_ZDA},
494 {"scomm", v850_comm, AREA_SDA},
495 {"tcomm", v850_comm, AREA_TDA},
496 {"v850", set_machine, 0},
497 /* start-sanitize-v850e */
498 {"call_table_data", v850_call_table_data, 0},
499 {"call_table_text", v850_call_table_text, 0},
500 {"v850e", set_machine, bfd_mach_v850e},
501 {"v850ea", set_machine, bfd_mach_v850ea},
502 /* end-sanitize-v850e */
503 { NULL, NULL, 0}
504 };
505
506 /* Opcode hash table. */
507 static struct hash_control *v850_hash;
508
509 /* This table is sorted. Suitable for searching by a binary search. */
510 static const struct reg_name pre_defined_registers[] =
511 {
512 { "ep", 30 }, /* ep - element ptr */
513 { "gp", 4 }, /* gp - global ptr */
514 { "hp", 2 }, /* hp - handler stack ptr */
515 { "lp", 31 }, /* lp - link ptr */
516 { "r0", 0 },
517 { "r1", 1 },
518 { "r10", 10 },
519 { "r11", 11 },
520 { "r12", 12 },
521 { "r13", 13 },
522 { "r14", 14 },
523 { "r15", 15 },
524 { "r16", 16 },
525 { "r17", 17 },
526 { "r18", 18 },
527 { "r19", 19 },
528 { "r2", 2 },
529 { "r20", 20 },
530 { "r21", 21 },
531 { "r22", 22 },
532 { "r23", 23 },
533 { "r24", 24 },
534 { "r25", 25 },
535 { "r26", 26 },
536 { "r27", 27 },
537 { "r28", 28 },
538 { "r29", 29 },
539 { "r3", 3 },
540 { "r30", 30 },
541 { "r31", 31 },
542 { "r4", 4 },
543 { "r5", 5 },
544 { "r6", 6 },
545 { "r7", 7 },
546 { "r8", 8 },
547 { "r9", 9 },
548 { "sp", 3 }, /* sp - stack ptr */
549 { "tp", 5 }, /* tp - text ptr */
550 { "zero", 0 },
551 };
552 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
553
554
555 static const struct reg_name system_registers[] =
556 {
557 /* start-sanitize-v850e */
558 { "ctbp", 20 },
559 { "ctpc", 16 },
560 { "ctpsw", 17 },
561 { "dbpc", 18 },
562 { "dbpsw", 19 },
563 /* end-sanitize-v850e */
564 { "ecr", 4 },
565 { "eipc", 0 },
566 { "eipsw", 1 },
567 { "fepc", 2 },
568 { "fepsw", 3 },
569 { "psw", 5 },
570 };
571 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
572
573 /* start-sanitize-v850e */
574 static const struct reg_name system_list_registers[] =
575 {
576 {"PS", 5 },
577 {"SR", 0 + 1}
578 };
579 #define SYSREGLIST_NAME_CNT (sizeof (system_list_registers) / sizeof (struct reg_name))
580 /* end-sanitize-v850e */
581
582 static const struct reg_name cc_names[] =
583 {
584 { "c", 0x1 },
585 { "e", 0x2 },
586 { "ge", 0xe },
587 { "gt", 0xf },
588 { "h", 0xb },
589 { "l", 0x1 },
590 { "le", 0x7 },
591 { "lt", 0x6 },
592 { "n", 0x4 },
593 { "nc", 0x9 },
594 { "ne", 0xa },
595 { "nh", 0x3 },
596 { "nl", 0x9 },
597 { "ns", 0xc },
598 { "nv", 0x8 },
599 { "nz", 0xa },
600 { "p", 0xc },
601 { "s", 0x4 },
602 { "sa", 0xd },
603 { "t", 0x5 },
604 { "v", 0x0 },
605 { "z", 0x2 },
606 };
607 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
608
609 /* reg_name_search does a binary search of the given register table
610 to see if "name" is a valid regiter name. Returns the register
611 number from the array on success, or -1 on failure. */
612
613 static int
614 reg_name_search (regs, regcount, name, accept_numbers)
615 const struct reg_name * regs;
616 int regcount;
617 const char * name;
618 boolean accept_numbers;
619 {
620 int middle, low, high;
621 int cmp;
622 symbolS * symbolP;
623
624 /* If the register name is a symbol, then evaluate it. */
625 if ((symbolP = symbol_find (name)) != NULL)
626 {
627 /* If the symbol is an alias for another name then use that.
628 If the symbol is an alias for a number, then return the number. */
629 if (symbolP->sy_value.X_op == O_symbol)
630 {
631 name = S_GET_NAME (symbolP->sy_value.X_add_symbol);
632 }
633 else if (accept_numbers)
634 {
635 int reg = S_GET_VALUE (symbolP);
636
637 if (reg >= 0 && reg <= 31)
638 return reg;
639 }
640 }
641
642 low = 0;
643 high = regcount - 1;
644
645 do
646 {
647 middle = (low + high) / 2;
648 cmp = strcasecmp (name, regs[middle].name);
649 if (cmp < 0)
650 high = middle - 1;
651 else if (cmp > 0)
652 low = middle + 1;
653 else
654 return regs[middle].value;
655 }
656 while (low <= high);
657 return -1;
658 }
659
660
661 /* Summary of register_name().
662 *
663 * in: Input_line_pointer points to 1st char of operand.
664 *
665 * out: A expressionS.
666 * The operand may have been a register: in this case, X_op == O_register,
667 * X_add_number is set to the register number, and truth is returned.
668 * Input_line_pointer->(next non-blank) char after operand, or is in
669 * its original state.
670 */
671 static boolean
672 register_name (expressionP)
673 expressionS * expressionP;
674 {
675 int reg_number;
676 char * name;
677 char * start;
678 char c;
679
680 /* Find the spelling of the operand */
681 start = name = input_line_pointer;
682
683 c = get_symbol_end ();
684
685 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT,
686 name, FALSE);
687
688 * input_line_pointer = c; /* put back the delimiting char */
689
690 /* look to see if it's in the register table */
691 if (reg_number >= 0)
692 {
693 expressionP->X_op = O_register;
694 expressionP->X_add_number = reg_number;
695
696 /* make the rest nice */
697 expressionP->X_add_symbol = NULL;
698 expressionP->X_op_symbol = NULL;
699
700 return true;
701 }
702 else
703 {
704 /* reset the line as if we had not done anything */
705 input_line_pointer = start;
706
707 return false;
708 }
709 }
710
711 /* Summary of system_register_name().
712 *
713 * in: Input_line_pointer points to 1st char of operand.
714 * expressionP points to an expression structure to be filled in.
715 * accept_numbers is true iff numerical register names may be used.
716 * start-sanitize-v850e
717 * accept_list_names is true iff the special names PS and SR may be
718 * accepted.
719 * end-sanitize-v850e
720 *
721 * out: A expressionS structure in expressionP.
722 * The operand may have been a register: in this case, X_op == O_register,
723 * X_add_number is set to the register number, and truth is returned.
724 * Input_line_pointer->(next non-blank) char after operand, or is in
725 * its original state.
726 */
727 static boolean
728 system_register_name (expressionP, accept_numbers
729 /* start-sanitize-v850e */
730 , accept_list_names
731 /* end-sanitize-v850e */
732 )
733 expressionS * expressionP;
734 boolean accept_numbers;
735 /* start-sanitize-v850e */
736 boolean accept_list_names;
737 /* end-sanitize-v850e */
738 {
739 int reg_number;
740 char * name;
741 char * start;
742 char c;
743
744 /* Find the spelling of the operand */
745 start = name = input_line_pointer;
746
747 c = get_symbol_end ();
748 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name,
749 accept_numbers);
750
751 * input_line_pointer = c; /* put back the delimiting char */
752
753 if (reg_number < 0
754 && accept_numbers)
755 {
756 input_line_pointer = start; /* reset input_line pointer */
757
758 if (isdigit (* input_line_pointer))
759 {
760 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
761
762 /* Make sure that the register number is allowable. */
763 if ( reg_number < 0
764 || reg_number > 5
765 /* start-sanitize-v850e */
766 && reg_number < 16
767 || reg_number > 20
768 /* end-sanitize-v850e */
769 )
770 {
771 reg_number = -1;
772 }
773 }
774 /* start-sanitize-v850e */
775 else if (accept_list_names)
776 {
777 c = get_symbol_end ();
778 reg_number = reg_name_search (system_list_registers,
779 SYSREGLIST_NAME_CNT, name, FALSE);
780
781 * input_line_pointer = c; /* put back the delimiting char */
782 }
783 /* end-sanitize-v850e */
784 }
785
786 /* look to see if it's in the register table */
787 if (reg_number >= 0)
788 {
789 expressionP->X_op = O_register;
790 expressionP->X_add_number = reg_number;
791
792 /* make the rest nice */
793 expressionP->X_add_symbol = NULL;
794 expressionP->X_op_symbol = NULL;
795
796 return true;
797 }
798 else
799 {
800 /* reset the line as if we had not done anything */
801 input_line_pointer = start;
802
803 return false;
804 }
805 }
806
807 /* Summary of cc_name().
808 *
809 * in: Input_line_pointer points to 1st char of operand.
810 *
811 * out: A expressionS.
812 * The operand may have been a register: in this case, X_op == O_register,
813 * X_add_number is set to the register number, and truth is returned.
814 * Input_line_pointer->(next non-blank) char after operand, or is in
815 * its original state.
816 */
817 static boolean
818 cc_name (expressionP)
819 expressionS * expressionP;
820 {
821 int reg_number;
822 char * name;
823 char * start;
824 char c;
825
826 /* Find the spelling of the operand */
827 start = name = input_line_pointer;
828
829 c = get_symbol_end ();
830 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE);
831
832 * input_line_pointer = c; /* put back the delimiting char */
833
834 /* look to see if it's in the register table */
835 if (reg_number >= 0)
836 {
837 expressionP->X_op = O_constant;
838 expressionP->X_add_number = reg_number;
839
840 /* make the rest nice */
841 expressionP->X_add_symbol = NULL;
842 expressionP->X_op_symbol = NULL;
843
844 return true;
845 }
846 else
847 {
848 /* reset the line as if we had not done anything */
849 input_line_pointer = start;
850
851 return false;
852 }
853 }
854
855 static void
856 skip_white_space (void)
857 {
858 while ( * input_line_pointer == ' '
859 || * input_line_pointer == '\t')
860 ++ input_line_pointer;
861 }
862
863 /* start-sanitize-v850e */
864 /* Summary of parse_register_list ().
865 *
866 * in: Input_line_pointer points to 1st char of a list of registers.
867 * insn is the partially constructed instruction.
868 * operand is the operand being inserted.
869 *
870 * out: NULL if the parse completed successfully, otherwise a
871 * pointer to an error message is returned. If the parse
872 * completes the correct bit fields in the instruction
873 * will be filled in.
874 *
875 * Parses register lists with the syntax:
876 *
877 * { rX }
878 * { rX, rY }
879 * { rX - rY }
880 * { rX - rY, rZ }
881 * etc
882 *
883 * and also parses constant epxressions whoes bits indicate the
884 * registers in the lists. The LSB in the expression refers to
885 * the lowest numbered permissable register in the register list,
886 * and so on upwards. System registers are considered to be very
887 * high numbers.
888 *
889 */
890 static char *
891 parse_register_list
892 (
893 unsigned long * insn,
894 const struct v850_operand * operand
895 )
896 {
897 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 };
898 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 };
899 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 };
900 int * regs;
901 expressionS exp;
902
903
904 /* Select a register array to parse. */
905 switch (operand->shift)
906 {
907 case 0xffe00001: regs = type1_regs; break;
908 case 0xfff8000f: regs = type2_regs; break;
909 case 0xfff8001f: regs = type3_regs; break;
910 default:
911 as_bad (_("unknown operand shift: %x\n"), operand->shift );
912 return _("internal failure in parse_register_list");
913 }
914
915 skip_white_space();
916
917 /* If the expression starts with a curly brace it is a register list.
918 Otherwise it is a constant expression, whoes bits indicate which
919 registers are to be included in the list. */
920
921 if (* input_line_pointer != '{')
922 {
923 int bits;
924 int reg;
925 int i;
926
927 expression (& exp);
928
929 if (exp.X_op != O_constant)
930 return _("constant expression or register list expected");
931
932 if (regs == type1_regs)
933 {
934 if (exp.X_add_number & 0xFFFFF000)
935 return _("high bits set in register list expression");
936
937 for (reg = 20; reg < 32; reg ++)
938 if (exp.X_add_number & (1 << (reg - 20)))
939 {
940 for (i = 0; i < 32; i++)
941 if (regs[i] == reg)
942 * insn |= (1 << i);
943 }
944 }
945 else if (regs == type2_regs)
946 {
947 if (exp.X_add_number & 0xFFFE0000)
948 return _("high bits set in register list expression");
949
950 for (reg = 1; reg < 16; reg ++)
951 if (exp.X_add_number & (1 << (reg - 1)))
952 {
953 for (i = 0; i < 32; i++)
954 if (regs[i] == reg)
955 * insn |= (1 << i);
956 }
957
958 if (exp.X_add_number & (1 << 15))
959 * insn |= (1 << 3);
960
961 if (exp.X_add_number & (1 << 16))
962 * insn |= (1 << 19);
963 }
964 else /* regs == type3_regs */
965 {
966 if (exp.X_add_number & 0xFFFE0000)
967 return _("high bits set in register list expression");
968
969 for (reg = 16; reg < 32; reg ++)
970 if (exp.X_add_number & (1 << (reg - 16)))
971 {
972 for (i = 0; i < 32; i++)
973 if (regs[i] == reg)
974 * insn |= (1 << i);
975 }
976
977 if (exp.X_add_number & (1 << 16))
978 * insn |= (1 << 19);
979 }
980
981 return NULL;
982 }
983
984 input_line_pointer ++;
985
986 /* Parse the register list until a terminator (closing curly brace or
987 new-line) is found. */
988 for (;;)
989 {
990 if (register_name (& exp))
991 {
992 int i;
993
994 /* Locate the given register in the list, and if it is there,
995 insert the corresponding bit into the instruction. */
996 for (i = 0; i < 32; i++)
997 {
998 if (regs[ i ] == exp.X_add_number)
999 {
1000 * insn |= (1 << i);
1001 break;
1002 }
1003 }
1004
1005 if (i == 32)
1006 {
1007 return _("illegal register included in list");
1008 }
1009 }
1010 else if (system_register_name (& exp, true, true))
1011 {
1012 if (regs == type1_regs)
1013 {
1014 return _("system registers cannot be included in list");
1015 }
1016 else if (exp.X_add_number == 5)
1017 {
1018 if (regs == type2_regs)
1019 return _("PSW cannot be included in list");
1020 else
1021 * insn |= 0x8;
1022 }
1023 else if (exp.X_add_number < 4)
1024 * insn |= 0x80000;
1025 else
1026 return _("High value system registers cannot be included in list");
1027 }
1028 else if (* input_line_pointer == '}')
1029 {
1030 input_line_pointer ++;
1031 break;
1032 }
1033 else if (* input_line_pointer == ',')
1034 {
1035 input_line_pointer ++;
1036 continue;
1037 }
1038 else if (* input_line_pointer == '-')
1039 {
1040 /* We have encountered a range of registers: rX - rY */
1041 int j;
1042 expressionS exp2;
1043
1044 /* Skip the dash. */
1045 ++ input_line_pointer;
1046
1047 /* Get the second register in the range. */
1048 if (! register_name (& exp2))
1049 {
1050 return _("second register should follow dash in register list");
1051 exp2.X_add_number = exp.X_add_number;
1052 }
1053
1054 /* Add the rest of the registers in the range. */
1055 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
1056 {
1057 int i;
1058
1059 /* Locate the given register in the list, and if it is there,
1060 insert the corresponding bit into the instruction. */
1061 for (i = 0; i < 32; i++)
1062 {
1063 if (regs[ i ] == j)
1064 {
1065 * insn |= (1 << i);
1066 break;
1067 }
1068 }
1069
1070 if (i == 32)
1071 return _("illegal register included in list");
1072 }
1073 }
1074 else
1075 {
1076 break;
1077 }
1078
1079 skip_white_space ();
1080 }
1081
1082 return NULL;
1083 }
1084 /* end-sanitize-v850e */
1085
1086 CONST char * md_shortopts = "m:";
1087
1088 struct option md_longopts[] =
1089 {
1090 {NULL, no_argument, NULL, 0}
1091 };
1092 size_t md_longopts_size = sizeof md_longopts;
1093
1094
1095 void
1096 md_show_usage (stream)
1097 FILE * stream;
1098 {
1099 fprintf (stream, _("V850 options:\n"));
1100 fprintf (stream, _("\t-mwarn-signed-overflow Warn if signed immediate values overflow\n"));
1101 fprintf (stream, _("\t-mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n"));
1102 fprintf (stream, _("\t-mv850 The code is targeted at the v850\n"));
1103 /* start-sanitize-v850e */
1104 fprintf (stream, _("\t-mv850e The code is targeted at the v850e\n"));
1105 fprintf (stream, _("\t-mv850ea The code is targeted at the v850ea\n"));
1106 fprintf (stream, _("\t-mv850any The code is generic, despite any processor specific instructions\n"));
1107 /* end-sanitize-v850e */
1108 }
1109
1110 int
1111 md_parse_option (c, arg)
1112 int c;
1113 char * arg;
1114 {
1115 if (c != 'm')
1116 {
1117 /* xgettext:c-format */
1118 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1119 return 0;
1120 }
1121
1122 if (strcmp (arg, "warn-signed-overflow") == 0)
1123 {
1124 warn_signed_overflows = TRUE;
1125 }
1126 else if (strcmp (arg, "warn-unsigned-overflow") == 0)
1127 {
1128 warn_unsigned_overflows = TRUE;
1129 }
1130 else if (strcmp (arg, "v850") == 0)
1131 {
1132 machine = 0;
1133 processor_mask = PROCESSOR_V850;
1134 }
1135 /* start-sanitize-v850e */
1136 else if (strcmp (arg, "v850e") == 0)
1137 {
1138 machine = bfd_mach_v850e;
1139 processor_mask = PROCESSOR_V850E;
1140 }
1141 else if (strcmp (arg, "v850ea") == 0)
1142 {
1143 machine = bfd_mach_v850ea;
1144 processor_mask = PROCESSOR_V850EA;
1145 }
1146 else if (strcmp (arg, "v850any") == 0)
1147 {
1148 machine = 0; /* Tell the world that this is for any v850 chip. */
1149 processor_mask = PROCESSOR_V850EA; /* But support instructions for the extended versions. */
1150 }
1151 /* end-sanitize-v850e */
1152 else
1153 {
1154 /* xgettext:c-format */
1155 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1156 return 0;
1157 }
1158
1159 return 1;
1160 }
1161
1162 symbolS *
1163 md_undefined_symbol (name)
1164 char * name;
1165 {
1166 return 0;
1167 }
1168
1169 char *
1170 md_atof (type, litp, sizep)
1171 int type;
1172 char * litp;
1173 int * sizep;
1174 {
1175 int prec;
1176 LITTLENUM_TYPE words[4];
1177 char * t;
1178 int i;
1179
1180 switch (type)
1181 {
1182 case 'f':
1183 prec = 2;
1184 break;
1185
1186 case 'd':
1187 prec = 4;
1188 break;
1189
1190 default:
1191 *sizep = 0;
1192 return _("bad call to md_atof");
1193 }
1194
1195 t = atof_ieee (input_line_pointer, type, words);
1196 if (t)
1197 input_line_pointer = t;
1198
1199 *sizep = prec * 2;
1200
1201 for (i = prec - 1; i >= 0; i--)
1202 {
1203 md_number_to_chars (litp, (valueT) words[i], 2);
1204 litp += 2;
1205 }
1206
1207 return NULL;
1208 }
1209
1210
1211 /* Very gross. */
1212 void
1213 md_convert_frag (abfd, sec, fragP)
1214 bfd * abfd;
1215 asection * sec;
1216 fragS * fragP;
1217 {
1218 subseg_change (sec, 0);
1219
1220 /* In range conditional or unconditional branch. */
1221 if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2)
1222 {
1223 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
1224 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
1225 fragP->fr_var = 0;
1226 fragP->fr_fix += 2;
1227 }
1228 /* Out of range conditional branch. Emit a branch around a jump. */
1229 else if (fragP->fr_subtype == 1)
1230 {
1231 unsigned char *buffer =
1232 (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
1233
1234 /* Reverse the condition of the first branch. */
1235 buffer[0] ^= 0x08;
1236 /* Mask off all the displacement bits. */
1237 buffer[0] &= 0x8f;
1238 buffer[1] &= 0x07;
1239 /* Now set the displacement bits so that we branch
1240 around the unconditional branch. */
1241 buffer[0] |= 0x30;
1242
1243 /* Now create the unconditional branch + fixup to the final
1244 target. */
1245 md_number_to_chars (buffer + 2, 0x00000780, 4);
1246 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
1247 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1248 + 1);
1249 fragP->fr_var = 0;
1250 fragP->fr_fix += 6;
1251 }
1252 /* Out of range unconditional branch. Emit a jump. */
1253 else if (fragP->fr_subtype == 3)
1254 {
1255 md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4);
1256 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
1257 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1258 + 1);
1259 fragP->fr_var = 0;
1260 fragP->fr_fix += 4;
1261 }
1262 else
1263 abort ();
1264 }
1265
1266 valueT
1267 md_section_align (seg, addr)
1268 asection * seg;
1269 valueT addr;
1270 {
1271 int align = bfd_get_section_alignment (stdoutput, seg);
1272 return ((addr + (1 << align) - 1) & (-1 << align));
1273 }
1274
1275 void
1276 md_begin ()
1277 {
1278 char * prev_name = "";
1279 register const struct v850_opcode * op;
1280 flagword applicable;
1281
1282 /* start-sanitize-v850e */
1283 if (strncmp (TARGET_CPU, "v850ea", 6) == 0)
1284 {
1285 if (machine == -1)
1286 machine = bfd_mach_v850ea;
1287
1288 if (processor_mask == -1)
1289 processor_mask = PROCESSOR_V850EA;
1290 }
1291 else if (strncmp (TARGET_CPU, "v850e", 5) == 0)
1292 {
1293 if (machine == -1)
1294 machine = bfd_mach_v850e;
1295
1296 if (processor_mask == -1)
1297 processor_mask = PROCESSOR_V850E;
1298 }
1299 else
1300 /* end-sanitize-v850e */
1301 if (strncmp (TARGET_CPU, "v850", 4) == 0)
1302 {
1303 if (machine == -1)
1304 machine = 0;
1305
1306 if (processor_mask == -1)
1307 processor_mask = PROCESSOR_V850;
1308 }
1309 else
1310 /* xgettext:c-format */
1311 as_bad (_("Unable to determine default target processor from string: %s"),
1312 TARGET_CPU);
1313
1314 v850_hash = hash_new();
1315
1316 /* Insert unique names into hash table. The V850 instruction set
1317 has many identical opcode names that have different opcodes based
1318 on the operands. This hash table then provides a quick index to
1319 the first opcode with a particular name in the opcode table. */
1320
1321 op = v850_opcodes;
1322 while (op->name)
1323 {
1324 if (strcmp (prev_name, op->name))
1325 {
1326 prev_name = (char *) op->name;
1327 hash_insert (v850_hash, op->name, (char *) op);
1328 }
1329 op++;
1330 }
1331
1332 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1333
1334 /* start-sanitize-v850e */
1335 call_table_data_section = subseg_new (".call_table_data", 0);
1336 bfd_set_section_flags (stdoutput, call_table_data_section,
1337 applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
1338 | SEC_DATA | SEC_HAS_CONTENTS));
1339
1340 call_table_text_section = subseg_new (".call_table_text", 0);
1341 bfd_set_section_flags (stdoutput, call_table_text_section,
1342 applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE));
1343 /* end-sanitize-v850e */
1344
1345 }
1346
1347
1348 /* start-sanitize-v850e */
1349 static bfd_reloc_code_real_type
1350 handle_ctoff (const struct v850_operand * operand)
1351 {
1352 if (operand == NULL)
1353 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1354
1355 if ( operand->bits != 6
1356 || operand->shift != 0)
1357 {
1358 as_bad (_("ctoff() relocation used on an instruction which does not support it"));
1359 return BFD_RELOC_64; /* Used to indicate an error condition. */
1360 }
1361
1362 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1363 }
1364 /* end-sanitize-v850e */
1365
1366 static bfd_reloc_code_real_type
1367 handle_sdaoff (const struct v850_operand * operand)
1368 {
1369 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1370 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1371 /* start-sanitize-v850e */
1372 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1373 /* end-sanitize-v850e */
1374
1375 if ( operand->bits != 16
1376 || operand->shift != 16)
1377 {
1378 as_bad (_("sdaoff() relocation used on an instruction which does not support it"));
1379 return BFD_RELOC_64; /* Used to indicate an error condition. */
1380 }
1381
1382 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1383 }
1384
1385 static bfd_reloc_code_real_type
1386 handle_zdaoff (const struct v850_operand * operand)
1387 {
1388 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1389 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1390 /* start-sanitize-v850e */
1391 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1392 /* end-sanitize-v850e */
1393
1394 if ( operand->bits != 16
1395 || operand->shift != 16)
1396 {
1397 as_bad (_("zdaoff() relocation used on an instruction which does not support it"));
1398 return BFD_RELOC_64; /* Used to indicate an error condition. */
1399 }
1400
1401 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1402 }
1403
1404 static bfd_reloc_code_real_type
1405 handle_tdaoff (const struct v850_operand * operand)
1406 {
1407 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1408 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1409 /* start-sanitize-v850e */
1410 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1411 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1412 /* end-sanitize-v850e */
1413 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1414
1415 if (operand->bits != 7)
1416 {
1417 as_bad (_("tdaoff() relocation used on an instruction which does not support it"));
1418 return BFD_RELOC_64; /* Used to indicate an error condition. */
1419 }
1420
1421 return operand->insert != NULL
1422 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1423 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1424 }
1425
1426 /* Warning: The code in this function relies upon the definitions
1427 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1428 matching the hard coded values contained herein. */
1429
1430 static bfd_reloc_code_real_type
1431 v850_reloc_prefix (const struct v850_operand * operand)
1432 {
1433 boolean paren_skipped = false;
1434
1435
1436 /* Skip leading opening parenthesis. */
1437 if (* input_line_pointer == '(')
1438 {
1439 ++ input_line_pointer;
1440 paren_skipped = true;
1441 }
1442
1443 #define CHECK_(name, reloc) \
1444 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1445 { \
1446 input_line_pointer += strlen (name); \
1447 return reloc; \
1448 }
1449
1450 CHECK_ ("hi0", BFD_RELOC_HI16);
1451 CHECK_ ("hi", BFD_RELOC_HI16_S);
1452 CHECK_ ("lo", BFD_RELOC_LO16);
1453 CHECK_ ("sdaoff", handle_sdaoff (operand));
1454 CHECK_ ("zdaoff", handle_zdaoff (operand));
1455 CHECK_ ("tdaoff", handle_tdaoff (operand));
1456
1457 /* start-sanitize-v850e */
1458 CHECK_ ("hilo", BFD_RELOC_32);
1459 CHECK_ ("ctoff", handle_ctoff (operand));
1460 /* end-sanitize-v850e */
1461
1462 /* Restore skipped parenthesis. */
1463 if (paren_skipped)
1464 -- input_line_pointer;
1465
1466 return BFD_RELOC_UNUSED;
1467 }
1468
1469 /* Insert an operand value into an instruction. */
1470
1471 static unsigned long
1472 v850_insert_operand (insn, operand, val, file, line, str)
1473 unsigned long insn;
1474 const struct v850_operand * operand;
1475 offsetT val;
1476 char * file;
1477 unsigned int line;
1478 char * str;
1479 {
1480 if (operand->insert)
1481 {
1482 const char * message = NULL;
1483
1484 insn = operand->insert (insn, val, & message);
1485 if (message != NULL)
1486 {
1487 if ((operand->flags & V850_OPERAND_SIGNED)
1488 && ! warn_signed_overflows
1489 && strstr (message, "out of range") != NULL)
1490 {
1491 /* skip warning... */
1492 }
1493 else if ((operand->flags & V850_OPERAND_SIGNED) == 0
1494 && ! warn_unsigned_overflows
1495 && strstr (message, "out of range") != NULL)
1496 {
1497 /* skip warning... */
1498 }
1499 else if (str)
1500 {
1501 if (file == (char *) NULL)
1502 as_warn ("%s: %s", str, message);
1503 else
1504 as_warn_where (file, line, "%s: %s", str, message);
1505 }
1506 else
1507 {
1508 if (file == (char *) NULL)
1509 as_warn (message);
1510 else
1511 as_warn_where (file, line, message);
1512 }
1513 }
1514 }
1515 else
1516 {
1517 if (operand->bits != 32)
1518 {
1519 long min, max;
1520 offsetT test;
1521
1522 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1523 {
1524 if (! warn_signed_overflows)
1525 max = (1 << operand->bits) - 1;
1526 else
1527 max = (1 << (operand->bits - 1)) - 1;
1528
1529 min = - (1 << (operand->bits - 1));
1530 }
1531 else
1532 {
1533 max = (1 << operand->bits) - 1;
1534
1535 if (! warn_unsigned_overflows)
1536 min = - (1 << (operand->bits - 1));
1537 else
1538 min = 0;
1539 }
1540
1541 if (val < (offsetT) min || val > (offsetT) max)
1542 {
1543 /* xgettext:c-format */
1544 const char * err = _("operand out of range (%s not between %ld and %ld)");
1545 char buf[100];
1546
1547 /* Restore min and mix to expected values for decimal ranges. */
1548 if ((operand->flags & V850_OPERAND_SIGNED)
1549 && ! warn_signed_overflows)
1550 max = (1 << (operand->bits - 1)) - 1;
1551
1552 if (! (operand->flags & V850_OPERAND_SIGNED)
1553 && ! warn_unsigned_overflows)
1554 min = 0;
1555
1556 if (str)
1557 {
1558 sprintf (buf, "%s: ", str);
1559
1560 sprint_value (buf + strlen (buf), val);
1561 }
1562 else
1563 sprint_value (buf, val);
1564
1565 if (file == (char *) NULL)
1566 as_warn (err, buf, min, max);
1567 else
1568 as_warn_where (file, line, err, buf, min, max);
1569 }
1570 }
1571
1572 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1573 }
1574
1575 return insn;
1576 }
1577
1578 \f
1579 static char copy_of_instruction [128];
1580
1581 void
1582 md_assemble (str)
1583 char * str;
1584 {
1585 char * s;
1586 char * start_of_operands;
1587 struct v850_opcode * opcode;
1588 struct v850_opcode * next_opcode;
1589 const unsigned char * opindex_ptr;
1590 int next_opindex;
1591 int relaxable;
1592 unsigned long insn;
1593 unsigned long insn_size;
1594 char * f;
1595 int i;
1596 int match;
1597 boolean extra_data_after_insn = false;
1598 unsigned extra_data_len;
1599 unsigned long extra_data;
1600 char * saved_input_line_pointer;
1601
1602
1603 strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1);
1604
1605 /* Get the opcode. */
1606 for (s = str; *s != '\0' && ! isspace (*s); s++)
1607 continue;
1608
1609 if (*s != '\0')
1610 *s++ = '\0';
1611
1612 /* find the first opcode with the proper name */
1613 opcode = (struct v850_opcode *) hash_find (v850_hash, str);
1614 if (opcode == NULL)
1615 {
1616 /* xgettext:c-format */
1617 as_bad (_("Unrecognized opcode: `%s'"), str);
1618 ignore_rest_of_line ();
1619 return;
1620 }
1621
1622 str = s;
1623 while (isspace (* str))
1624 ++ str;
1625
1626 start_of_operands = str;
1627
1628 saved_input_line_pointer = input_line_pointer;
1629
1630 for (;;)
1631 {
1632 const char * errmsg = NULL;
1633
1634 match = 0;
1635
1636 if ((opcode->processors & processor_mask) == 0)
1637 {
1638 errmsg = _("Target processor does not support this instruction.");
1639 goto error;
1640 }
1641
1642 relaxable = 0;
1643 fc = 0;
1644 next_opindex = 0;
1645 insn = opcode->opcode;
1646 extra_data_after_insn = false;
1647
1648 input_line_pointer = str = start_of_operands;
1649
1650 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr ++)
1651 {
1652 const struct v850_operand * operand;
1653 char * hold;
1654 expressionS ex;
1655 bfd_reloc_code_real_type reloc;
1656
1657 if (next_opindex == 0)
1658 {
1659 operand = & v850_operands[ * opindex_ptr ];
1660 }
1661 else
1662 {
1663 operand = & v850_operands[ next_opindex ];
1664 next_opindex = 0;
1665 }
1666
1667 errmsg = NULL;
1668
1669 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1670 ++ str;
1671
1672 if (operand->flags & V850_OPERAND_RELAX)
1673 relaxable = 1;
1674
1675 /* Gather the operand. */
1676 hold = input_line_pointer;
1677 input_line_pointer = str;
1678
1679 /* lo(), hi(), hi0(), etc... */
1680 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1681 {
1682 /* This is a fake reloc, used to indicate an error condition. */
1683 if (reloc == BFD_RELOC_64)
1684 {
1685 match = 1;
1686 goto error;
1687 }
1688
1689 expression (& ex);
1690
1691 if (ex.X_op == O_constant)
1692 {
1693 switch (reloc)
1694 {
1695 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1696 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]"
1697 and the like. */
1698 /* Fall through. */
1699
1700 case BFD_RELOC_LO16:
1701 {
1702 /* Truncate, then sign extend the value. */
1703 ex.X_add_number = SEXT16 (ex.X_add_number);
1704 break;
1705 }
1706
1707 case BFD_RELOC_HI16:
1708 {
1709 /* Truncate, then sign extend the value. */
1710 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1711 break;
1712 }
1713
1714 case BFD_RELOC_HI16_S:
1715 {
1716 /* Truncate, then sign extend the value. */
1717 int temp = (ex.X_add_number >> 16) & 0xffff;
1718
1719 temp += (ex.X_add_number >> 15) & 1;
1720
1721 ex.X_add_number = SEXT16 (temp);
1722 break;
1723 }
1724
1725 /* start-sanitize-v850e */
1726 case BFD_RELOC_32:
1727 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1728 {
1729 errmsg = _("immediate operand is too large");
1730 goto error;
1731 }
1732
1733 extra_data_after_insn = true;
1734 extra_data_len = 4;
1735 extra_data = ex.X_add_number;
1736 ex.X_add_number = 0;
1737 break;
1738 /* end-sanitize-v850e */
1739
1740 default:
1741 fprintf (stderr, "reloc: %d\n", reloc);
1742 as_bad (_("AAARG -> unhandled constant reloc"));
1743 break;
1744 }
1745
1746 if (fc > MAX_INSN_FIXUPS)
1747 as_fatal (_("too many fixups"));
1748
1749 fixups[ fc ].exp = ex;
1750 fixups[ fc ].opindex = * opindex_ptr;
1751 fixups[ fc ].reloc = reloc;
1752 fc++;
1753 }
1754 else
1755 {
1756 /* start-sanitize-v850e */
1757 if (reloc == BFD_RELOC_32)
1758 {
1759 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1760 {
1761 errmsg = _("immediate operand is too large");
1762 goto error;
1763 }
1764
1765 extra_data_after_insn = true;
1766 extra_data_len = 4;
1767 extra_data = ex.X_add_number;
1768 }
1769 /* end-sanitize-v850e */
1770
1771 if (fc > MAX_INSN_FIXUPS)
1772 as_fatal (_("too many fixups"));
1773
1774 fixups[ fc ].exp = ex;
1775 fixups[ fc ].opindex = * opindex_ptr;
1776 fixups[ fc ].reloc = reloc;
1777 fc++;
1778 }
1779 }
1780 else
1781 {
1782 errmsg = NULL;
1783
1784 if ((operand->flags & V850_OPERAND_REG) != 0)
1785 {
1786 if (!register_name (& ex))
1787 {
1788 errmsg = _("invalid register name");
1789 }
1790 else if ((operand->flags & V850_NOT_R0)
1791 && ex.X_add_number == 0)
1792 {
1793 errmsg = _("register r0 cannot be used here");
1794
1795 /* Force an error message to be generated by
1796 skipping over any following potential matches
1797 for this opcode. */
1798 opcode += 3;
1799 }
1800 }
1801 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1802 {
1803 if (!system_register_name (& ex, true
1804 /* start-sanitize-v850e */
1805 , false
1806 /* end-sanitize-v850e */
1807 ))
1808 {
1809 errmsg = _("invalid system register name");
1810 }
1811 }
1812 else if ((operand->flags & V850_OPERAND_EP) != 0)
1813 {
1814 char * start = input_line_pointer;
1815 char c = get_symbol_end ();
1816
1817 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1818 {
1819 /* Put things back the way we found them. */
1820 *input_line_pointer = c;
1821 input_line_pointer = start;
1822 errmsg = _("expected EP register");
1823 goto error;
1824 }
1825
1826 *input_line_pointer = c;
1827 str = input_line_pointer;
1828 input_line_pointer = hold;
1829
1830 while ( *str == ' ' || *str == ',' || *str == '['
1831 || *str == ']')
1832 ++ str;
1833 continue;
1834 }
1835 else if ((operand->flags & V850_OPERAND_CC) != 0)
1836 {
1837 if (!cc_name (& ex))
1838 {
1839 errmsg = _("invalid condition code name");
1840 }
1841 }
1842 /* start-sanitize-v850e */
1843 else if (operand->flags & V850E_PUSH_POP)
1844 {
1845 errmsg = parse_register_list (& insn, operand);
1846
1847 /* The parse_register_list() function has already done
1848 everything, so fake a dummy expression. */
1849 ex.X_op = O_constant;
1850 ex.X_add_number = 0;
1851 }
1852 else if (operand->flags & V850E_IMMEDIATE16)
1853 {
1854 expression (& ex);
1855
1856 if (ex.X_op != O_constant)
1857 errmsg = _("constant expression expected");
1858 else if (ex.X_add_number & 0xffff0000)
1859 {
1860 if (ex.X_add_number & 0xffff)
1861 errmsg = _("constant too big to fit into instruction");
1862 else if ((insn & 0x001fffc0) == 0x00130780)
1863 ex.X_add_number >>= 16;
1864 else
1865 errmsg = _("constant too big to fit into instruction");
1866 }
1867
1868 extra_data_after_insn = true;
1869 extra_data_len = 2;
1870 extra_data = ex.X_add_number;
1871 ex.X_add_number = 0;
1872 }
1873 else if (operand->flags & V850E_IMMEDIATE32)
1874 {
1875 expression (& ex);
1876
1877 if (ex.X_op != O_constant)
1878 errmsg = _("constant expression expected");
1879
1880 extra_data_after_insn = true;
1881 extra_data_len = 4;
1882 extra_data = ex.X_add_number;
1883 ex.X_add_number = 0;
1884 }
1885 /* end-sanitize-v850e */
1886 else if (register_name (& ex)
1887 && (operand->flags & V850_OPERAND_REG) == 0)
1888 {
1889 char c;
1890 int exists = 0;
1891
1892 /* It is possible that an alias has been defined that
1893 matches a register name. For example the code may
1894 include a ".set ZERO, 0" directive, which matches
1895 the register name "zero". Attempt to reparse the
1896 field as an expression, and only complain if we
1897 cannot generate a constant. */
1898
1899 input_line_pointer = str;
1900
1901 c = get_symbol_end();
1902
1903 if (symbol_find (str) != NULL)
1904 exists = 1;
1905
1906 * input_line_pointer = c;
1907 input_line_pointer = str;
1908
1909 expression (& ex);
1910
1911 if (ex.X_op != O_constant)
1912 {
1913 /* If this register is actually occuring too early on
1914 the parsing of the instruction, (because another
1915 field is missing) then report this. */
1916 if (opindex_ptr[1] != 0
1917 && (v850_operands [opindex_ptr [1]].flags & V850_OPERAND_REG))
1918 errmsg = _("syntax error: value is missing before the register name");
1919 else
1920 errmsg = _("syntax error: register not expected");
1921
1922 /* If we created a symbol in the process of this test then
1923 delete it now, so that it will not be output with the real
1924 symbols... */
1925 if (exists == 0
1926 && ex.X_op == O_symbol)
1927 symbol_remove (ex.X_add_symbol,
1928 & symbol_rootP, & symbol_lastP);
1929 }
1930 }
1931 else if (system_register_name (& ex, false
1932 /* start-sanitize-v850e */
1933 , false
1934 /* end-sanitize-v850e */
1935 )
1936 && (operand->flags & V850_OPERAND_SRG) == 0)
1937 {
1938 errmsg = _("syntax error: system register not expected");
1939 }
1940 else if (cc_name (&ex)
1941 && (operand->flags & V850_OPERAND_CC) == 0)
1942 {
1943 errmsg = _("syntax error: condition code not expected");
1944 }
1945 else
1946 {
1947 expression (& ex);
1948 /* start-sanitize-v850e */
1949 /* Special case:
1950 If we are assembling a MOV instruction (or a CALLT.... :-)
1951 and the immediate value does not fit into the bits
1952 available then create a fake error so that the next MOV
1953 instruction will be selected. This one has a 32 bit
1954 immediate field. */
1955
1956 if (((insn & 0x07e0) == 0x0200)
1957 && ex.X_op == O_constant
1958 && (ex.X_add_number < (- (1 << (operand->bits - 1)))
1959 || ex.X_add_number > ((1 << operand->bits) - 1)))
1960 errmsg = _("immediate operand is too large");
1961 /* end-sanitize-v850e */
1962 }
1963
1964 if (errmsg)
1965 goto error;
1966
1967 /* fprintf (stderr, " insn: %x, operand %d, op: %d, add_number: %d\n",
1968 insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number); */
1969
1970 switch (ex.X_op)
1971 {
1972 case O_illegal:
1973 errmsg = _("illegal operand");
1974 goto error;
1975 case O_absent:
1976 errmsg = _("missing operand");
1977 goto error;
1978 case O_register:
1979 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
1980 {
1981 errmsg = _("invalid operand");
1982 goto error;
1983 }
1984 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1985 (char *) NULL, 0,
1986 copy_of_instruction);
1987 break;
1988
1989 case O_constant:
1990 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1991 (char *) NULL, 0,
1992 copy_of_instruction);
1993 break;
1994
1995 default:
1996 /* We need to generate a fixup for this expression. */
1997 if (fc >= MAX_INSN_FIXUPS)
1998 as_fatal (_("too many fixups"));
1999
2000 fixups[ fc ].exp = ex;
2001 fixups[ fc ].opindex = * opindex_ptr;
2002 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
2003 ++fc;
2004 break;
2005 }
2006 }
2007
2008 str = input_line_pointer;
2009 input_line_pointer = hold;
2010
2011 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
2012 || *str == ')')
2013 ++str;
2014 }
2015 match = 1;
2016
2017 error:
2018 if (match == 0)
2019 {
2020 next_opcode = opcode + 1;
2021 if (next_opcode->name != NULL
2022 && strcmp (next_opcode->name, opcode->name) == 0)
2023 {
2024 opcode = next_opcode;
2025
2026 /* Skip versions that are not supported by the target
2027 processor. */
2028 if ((opcode->processors & processor_mask) == 0)
2029 goto error;
2030
2031 continue;
2032 }
2033
2034 as_bad ("%s: %s", copy_of_instruction, errmsg);
2035
2036 if (* input_line_pointer == ']')
2037 ++ input_line_pointer;
2038
2039 ignore_rest_of_line ();
2040 input_line_pointer = saved_input_line_pointer;
2041 return;
2042 }
2043 break;
2044 }
2045
2046 while (isspace (*str))
2047 ++str;
2048
2049 if (*str != '\0')
2050 /* xgettext:c-format */
2051 as_bad (_("junk at end of line: `%s'"), str);
2052
2053 input_line_pointer = str;
2054
2055 /* Write out the instruction. */
2056
2057 if (relaxable && fc > 0)
2058 {
2059 insn_size = 2;
2060 fc = 0;
2061
2062 if (!strcmp (opcode->name, "br"))
2063 {
2064 f = frag_var (rs_machine_dependent, 4, 2, 2,
2065 fixups[0].exp.X_add_symbol,
2066 fixups[0].exp.X_add_number,
2067 (char *)fixups[0].opindex);
2068 md_number_to_chars (f, insn, insn_size);
2069 md_number_to_chars (f + 2, 0, 2);
2070 }
2071 else
2072 {
2073 f = frag_var (rs_machine_dependent, 6, 4, 0,
2074 fixups[0].exp.X_add_symbol,
2075 fixups[0].exp.X_add_number,
2076 (char *)fixups[0].opindex);
2077 md_number_to_chars (f, insn, insn_size);
2078 md_number_to_chars (f + 2, 0, 4);
2079 }
2080 }
2081 else
2082 {
2083 /* Four byte insns have an opcode with the two high bits on. */
2084 if ((insn & 0x0600) == 0x0600)
2085 insn_size = 4;
2086 else
2087 insn_size = 2;
2088
2089 /* start-sanitize-v850e */
2090 /* Special case: 32 bit MOV */
2091 if ((insn & 0xffe0) == 0x0620)
2092 insn_size = 2;
2093 /* end-sanitize-v850e */
2094
2095 f = frag_more (insn_size);
2096
2097 md_number_to_chars (f, insn, insn_size);
2098
2099 if (extra_data_after_insn)
2100 {
2101 f = frag_more (extra_data_len);
2102
2103 md_number_to_chars (f, extra_data, extra_data_len);
2104
2105 extra_data_after_insn = false;
2106 }
2107 }
2108
2109 /* Create any fixups. At this point we do not use a
2110 bfd_reloc_code_real_type, but instead just use the
2111 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2112 handle fixups for any operand type, although that is admittedly
2113 not a very exciting feature. We pick a BFD reloc type in
2114 md_apply_fix. */
2115 for (i = 0; i < fc; i++)
2116 {
2117 const struct v850_operand * operand;
2118 bfd_reloc_code_real_type reloc;
2119
2120 operand = & v850_operands[ fixups[i].opindex ];
2121
2122 reloc = fixups[i].reloc;
2123
2124 if (reloc != BFD_RELOC_UNUSED)
2125 {
2126 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput,
2127 reloc);
2128 int size;
2129 int address;
2130 fixS * fixP;
2131
2132 if (!reloc_howto)
2133 abort();
2134
2135 size = bfd_get_reloc_size (reloc_howto);
2136
2137 /* XXX This will abort on an R_V850_8 reloc -
2138 is this reloc actually used ? */
2139 if (size != 2 && size != 4)
2140 abort();
2141
2142 address = (f - frag_now->fr_literal) + insn_size - size;
2143
2144 if (reloc == BFD_RELOC_32)
2145 {
2146 address += 2;
2147 }
2148
2149 fixP = fix_new_exp (frag_now, address, size,
2150 & fixups[i].exp,
2151 reloc_howto->pc_relative,
2152 reloc);
2153
2154 switch (reloc)
2155 {
2156 case BFD_RELOC_LO16:
2157 case BFD_RELOC_HI16:
2158 case BFD_RELOC_HI16_S:
2159 fixP->fx_no_overflow = 1;
2160 break;
2161 }
2162 }
2163 else
2164 {
2165 fix_new_exp (
2166 frag_now,
2167 f - frag_now->fr_literal, 4,
2168 & fixups[i].exp,
2169 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
2170 (bfd_reloc_code_real_type) (fixups[i].opindex
2171 + (int) BFD_RELOC_UNUSED)
2172 );
2173 }
2174 }
2175
2176 input_line_pointer = saved_input_line_pointer;
2177 }
2178
2179
2180 /* If while processing a fixup, a reloc really needs to be created */
2181 /* then it is done here. */
2182
2183 arelent *
2184 tc_gen_reloc (seg, fixp)
2185 asection * seg;
2186 fixS * fixp;
2187 {
2188 arelent * reloc;
2189
2190 reloc = (arelent *) xmalloc (sizeof (arelent));
2191 reloc->sym_ptr_ptr = & fixp->fx_addsy->bsym;
2192 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2193 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
2194
2195 if (reloc->howto == (reloc_howto_type *) NULL)
2196 {
2197 as_bad_where (fixp->fx_file, fixp->fx_line,
2198 /* xgettext:c-format */
2199 _("reloc %d not supported by object file format"),
2200 (int)fixp->fx_r_type);
2201
2202 xfree (reloc);
2203
2204 return NULL;
2205 }
2206
2207 reloc->addend = fixp->fx_addnumber;
2208
2209 return reloc;
2210 }
2211
2212 /* Assume everything will fit in two bytes, then expand as necessary. */
2213 int
2214 md_estimate_size_before_relax (fragp, seg)
2215 fragS * fragp;
2216 asection * seg;
2217 {
2218 if (fragp->fr_subtype == 0)
2219 fragp->fr_var = 4;
2220 else if (fragp->fr_subtype == 2)
2221 fragp->fr_var = 2;
2222 else
2223 abort ();
2224 return 2;
2225 }
2226
2227 long
2228 md_pcrel_from (fixp)
2229 fixS * fixp;
2230 {
2231 /* If the symbol is undefined, or in a section other than our own,
2232 then let the linker figure it out. */
2233 if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
2234 {
2235 /* The symbol is undefined. Let the linker figure it out. */
2236 return 0;
2237 }
2238 return fixp->fx_frag->fr_address + fixp->fx_where;
2239 }
2240
2241 int
2242 md_apply_fix3 (fixp, valuep, seg)
2243 fixS * fixp;
2244 valueT * valuep;
2245 segT seg;
2246 {
2247 valueT value;
2248 char * where;
2249
2250 if (fixp->fx_addsy == (symbolS *) NULL)
2251 {
2252 value = * valuep;
2253 fixp->fx_done = 1;
2254 }
2255 else if (fixp->fx_pcrel)
2256 value = * valuep;
2257 else
2258 {
2259 value = fixp->fx_offset;
2260 if (fixp->fx_subsy != (symbolS *) NULL)
2261 {
2262 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
2263 value -= S_GET_VALUE (fixp->fx_subsy);
2264 else
2265 {
2266 /* We don't actually support subtracting a symbol. */
2267 as_bad_where (fixp->fx_file, fixp->fx_line,
2268 _("expression too complex"));
2269 }
2270 }
2271 }
2272
2273 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
2274 {
2275 int opindex;
2276 const struct v850_operand * operand;
2277 unsigned long insn;
2278
2279 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
2280 operand = & v850_operands[ opindex ];
2281
2282 /* Fetch the instruction, insert the fully resolved operand
2283 value, and stuff the instruction back again.
2284
2285 Note the instruction has been stored in little endian
2286 format! */
2287 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2288
2289 insn = bfd_getl32 ((unsigned char *) where);
2290 insn = v850_insert_operand (insn, operand, (offsetT) value,
2291 fixp->fx_file, fixp->fx_line, NULL);
2292 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
2293
2294 if (fixp->fx_done)
2295 {
2296 /* Nothing else to do here. */
2297 return 1;
2298 }
2299
2300 /* Determine a BFD reloc value based on the operand information.
2301 We are only prepared to turn a few of the operands into relocs. */
2302
2303 if (operand->bits == 22)
2304 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
2305 else if (operand->bits == 9)
2306 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
2307 else
2308 {
2309 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
2310
2311 as_bad_where(fixp->fx_file, fixp->fx_line,
2312 _("unresolved expression that must be resolved"));
2313 fixp->fx_done = 1;
2314 return 1;
2315 }
2316 }
2317 else if (fixp->fx_done)
2318 {
2319 /* We still have to insert the value into memory! */
2320 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2321
2322 if (fixp->fx_size == 1)
2323 *where = value & 0xff;
2324 else if (fixp->fx_size == 2)
2325 bfd_putl16 (value & 0xffff, (unsigned char *) where);
2326 else if (fixp->fx_size == 4)
2327 bfd_putl32 (value, (unsigned char *) where);
2328 }
2329
2330 fixp->fx_addnumber = value;
2331 return 1;
2332 }
2333
2334 \f
2335 /* Parse a cons expression. We have to handle hi(), lo(), etc
2336 on the v850. */
2337 void
2338 parse_cons_expression_v850 (exp)
2339 expressionS *exp;
2340 {
2341 /* See if there's a reloc prefix like hi() we have to handle. */
2342 hold_cons_reloc = v850_reloc_prefix (NULL);
2343
2344 /* Do normal expression parsing. */
2345 expression (exp);
2346 }
2347
2348 /* Create a fixup for a cons expression. If parse_cons_expression_v850
2349 found a reloc prefix, then we use that reloc, else we choose an
2350 appropriate one based on the size of the expression. */
2351 void
2352 cons_fix_new_v850 (frag, where, size, exp)
2353 fragS *frag;
2354 int where;
2355 int size;
2356 expressionS *exp;
2357 {
2358 if (hold_cons_reloc == BFD_RELOC_UNUSED)
2359 {
2360 if (size == 4)
2361 hold_cons_reloc = BFD_RELOC_32;
2362 if (size == 2)
2363 hold_cons_reloc = BFD_RELOC_16;
2364 if (size == 1)
2365 hold_cons_reloc = BFD_RELOC_8;
2366 }
2367
2368 if (exp != NULL)
2369 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
2370 else
2371 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
2372 }
GDB Binutils - Deliverables
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