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[deliverable/binutils-gdb.git] / gas / config / tc-v850.c
1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright (C) 1996, 1997, 1998 Free Software Foundation.
3
4 This file is part of GAS, the GNU Assembler.
5
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 #include <stdio.h>
22 #include <ctype.h>
23 #include "as.h"
24 #include "subsegs.h"
25 #include "opcode/v850.h"
26
27 #define AREA_ZDA 0
28 #define AREA_SDA 1
29 #define AREA_TDA 2
30
31 /* sign-extend a 16-bit number */
32 #define SEXT16(x) ((((x) & 0xffff) ^ (~ 0x7fff)) + 0x8000)
33
34 /* Temporarily holds the reloc in a cons expression. */
35 static bfd_reloc_code_real_type hold_cons_reloc;
36
37 /* Set to TRUE if we want to be pedantic about signed overflows. */
38 static boolean warn_signed_overflows = FALSE;
39 static boolean warn_unsigned_overflows = FALSE;
40
41 /* Indicates the target BFD machine number. */
42 static int machine = -1;
43
44 /* Indicates the target processor(s) for the assemble. */
45 static unsigned int processor_mask = -1;
46
47 \f
48 /* Structure to hold information about predefined registers. */
49 struct reg_name
50 {
51 const char * name;
52 int value;
53 };
54
55 /* Generic assembler global variables which must be defined by all targets. */
56
57 /* Characters which always start a comment. */
58 const char comment_chars[] = "#";
59
60 /* Characters which start a comment at the beginning of a line. */
61 const char line_comment_chars[] = ";#";
62
63 /* Characters which may be used to separate multiple commands on a
64 single line. */
65 const char line_separator_chars[] = ";";
66
67 /* Characters which are used to indicate an exponent in a floating
68 point number. */
69 const char EXP_CHARS[] = "eE";
70
71 /* Characters which mean that a number is a floating point constant,
72 as in 0d1.0. */
73 const char FLT_CHARS[] = "dD";
74 \f
75
76 const relax_typeS md_relax_table[] =
77 {
78 /* Conditional branches. */
79 {0xff, -0x100, 2, 1},
80 {0x1fffff, -0x200000, 6, 0},
81 /* Unconditional branches. */
82 {0xff, -0x100, 2, 3},
83 {0x1fffff, -0x200000, 4, 0},
84 };
85
86
87 static segT sdata_section = NULL;
88 static segT tdata_section = NULL;
89 static segT zdata_section = NULL;
90 static segT sbss_section = NULL;
91 static segT tbss_section = NULL;
92 static segT zbss_section = NULL;
93 static segT rosdata_section = NULL;
94 static segT rozdata_section = NULL;
95 static segT scommon_section = NULL;
96 static segT tcommon_section = NULL;
97 static segT zcommon_section = NULL;
98 /* start-sanitize-v850e */
99 static segT call_table_data_section = NULL;
100 static segT call_table_text_section = NULL;
101 /* end-sanitize-v850e */
102
103 /* fixups */
104 #define MAX_INSN_FIXUPS (5)
105 struct v850_fixup
106 {
107 expressionS exp;
108 int opindex;
109 bfd_reloc_code_real_type reloc;
110 };
111
112 struct v850_fixup fixups [MAX_INSN_FIXUPS];
113 static int fc;
114
115 \f
116 void
117 v850_sdata (int ignore)
118 {
119 obj_elf_section_change_hook();
120
121 subseg_set (sdata_section, (subsegT) get_absolute_expression ());
122
123 demand_empty_rest_of_line ();
124 }
125
126 void
127 v850_tdata (int ignore)
128 {
129 obj_elf_section_change_hook();
130
131 subseg_set (tdata_section, (subsegT) get_absolute_expression ());
132
133 demand_empty_rest_of_line ();
134 }
135
136 void
137 v850_zdata (int ignore)
138 {
139 obj_elf_section_change_hook();
140
141 subseg_set (zdata_section, (subsegT) get_absolute_expression ());
142
143 demand_empty_rest_of_line ();
144 }
145
146 void
147 v850_sbss (int ignore)
148 {
149 obj_elf_section_change_hook();
150
151 subseg_set (sbss_section, (subsegT) get_absolute_expression ());
152
153 demand_empty_rest_of_line ();
154 }
155
156 void
157 v850_tbss (int ignore)
158 {
159 obj_elf_section_change_hook();
160
161 subseg_set (tbss_section, (subsegT) get_absolute_expression ());
162
163 demand_empty_rest_of_line ();
164 }
165
166 void
167 v850_zbss (int ignore)
168 {
169 obj_elf_section_change_hook();
170
171 subseg_set (zbss_section, (subsegT) get_absolute_expression ());
172
173 demand_empty_rest_of_line ();
174 }
175
176 void
177 v850_rosdata (int ignore)
178 {
179 obj_elf_section_change_hook();
180
181 subseg_set (rosdata_section, (subsegT) get_absolute_expression ());
182
183 demand_empty_rest_of_line ();
184 }
185
186 void
187 v850_rozdata (int ignore)
188 {
189 obj_elf_section_change_hook();
190
191 subseg_set (rozdata_section, (subsegT) get_absolute_expression ());
192
193 demand_empty_rest_of_line ();
194 }
195
196 /* start-sanitize-v850e */
197 void
198 v850_call_table_data (int ignore)
199 {
200 obj_elf_section_change_hook();
201
202 subseg_set (call_table_data_section, (subsegT) get_absolute_expression ());
203
204 demand_empty_rest_of_line ();
205 }
206
207 void
208 v850_call_table_text (int ignore)
209 {
210 obj_elf_section_change_hook();
211
212 subseg_set (call_table_text_section, (subsegT) get_absolute_expression ());
213
214 demand_empty_rest_of_line ();
215 }
216 /* end-sanitize-v850e */
217
218 void
219 v850_bss (int ignore)
220 {
221 register int temp = get_absolute_expression ();
222
223 obj_elf_section_change_hook();
224
225 subseg_set (bss_section, (subsegT) temp);
226
227 demand_empty_rest_of_line ();
228 }
229
230 void
231 v850_offset (int ignore)
232 {
233 int temp = get_absolute_expression ();
234
235 temp -= frag_now_fix();
236
237 if (temp > 0)
238 (void) frag_more (temp);
239
240 demand_empty_rest_of_line ();
241 }
242
243 /* Copied from obj_elf_common() in gas/config/obj-elf.c */
244 static void
245 v850_comm (area)
246 int area;
247 {
248 char * name;
249 char c;
250 char * p;
251 int temp;
252 int size;
253 symbolS * symbolP;
254 int have_align;
255
256 name = input_line_pointer;
257 c = get_symbol_end ();
258 /* 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 as_warn ("Length of .comm \"%s\" is already %ld. Not changed to %d.",
290 S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size);
291 }
292 }
293 know (symbolP->sy_frag == &zero_address_frag);
294 if (*input_line_pointer != ',')
295 have_align = 0;
296 else
297 {
298 have_align = 1;
299 input_line_pointer++;
300 SKIP_WHITESPACE ();
301 }
302 if (! have_align || *input_line_pointer != '"')
303 {
304 if (! have_align)
305 temp = 0;
306 else
307 {
308 temp = get_absolute_expression ();
309 if (temp < 0)
310 {
311 temp = 0;
312 as_warn ("Common alignment negative; 0 assumed");
313 }
314 }
315 if (symbolP->local)
316 {
317 segT old_sec;
318 int old_subsec;
319 char * pfrag;
320 int align;
321
322 /* allocate_bss: */
323 old_sec = now_seg;
324 old_subsec = now_subseg;
325 if (temp)
326 {
327 /* convert to a power of 2 alignment */
328 for (align = 0; (temp & 1) == 0; temp >>= 1, ++align);
329 if (temp != 1)
330 {
331 as_bad ("Common alignment not a power of 2");
332 ignore_rest_of_line ();
333 return;
334 }
335 }
336 else
337 align = 0;
338 switch (area)
339 {
340 case AREA_SDA:
341 record_alignment (sbss_section, align);
342 obj_elf_section_change_hook();
343 subseg_set (sbss_section, 0);
344 break;
345
346 case AREA_ZDA:
347 record_alignment (zbss_section, align);
348 obj_elf_section_change_hook();
349 subseg_set (zbss_section, 0);
350 break;
351
352 case AREA_TDA:
353 record_alignment (tbss_section, align);
354 obj_elf_section_change_hook();
355 subseg_set (tbss_section, 0);
356 break;
357
358 default:
359 abort();
360 }
361
362 if (align)
363 frag_align (align, 0, 0);
364
365 switch (area)
366 {
367 case AREA_SDA:
368 if (S_GET_SEGMENT (symbolP) == sbss_section)
369 symbolP->sy_frag->fr_symbol = 0;
370 break;
371
372 case AREA_ZDA:
373 if (S_GET_SEGMENT (symbolP) == zbss_section)
374 symbolP->sy_frag->fr_symbol = 0;
375 break;
376
377 case AREA_TDA:
378 if (S_GET_SEGMENT (symbolP) == tbss_section)
379 symbolP->sy_frag->fr_symbol = 0;
380 break;
381
382 default:
383 abort();
384 }
385
386 symbolP->sy_frag = frag_now;
387 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
388 (offsetT) size, (char *) 0);
389 *pfrag = 0;
390 S_SET_SIZE (symbolP, size);
391
392 switch (area)
393 {
394 case AREA_SDA: S_SET_SEGMENT (symbolP, sbss_section); break;
395 case AREA_ZDA: S_SET_SEGMENT (symbolP, zbss_section); break;
396 case AREA_TDA: S_SET_SEGMENT (symbolP, tbss_section); break;
397 default:
398 abort();
399 }
400
401 S_CLEAR_EXTERNAL (symbolP);
402 obj_elf_section_change_hook();
403 subseg_set (old_sec, old_subsec);
404 }
405 else
406 {
407 allocate_common:
408 S_SET_VALUE (symbolP, (valueT) size);
409 S_SET_ALIGN (symbolP, temp);
410 S_SET_EXTERNAL (symbolP);
411
412 switch (area)
413 {
414 case AREA_SDA: S_SET_SEGMENT (symbolP, scommon_section); break;
415 case AREA_ZDA: S_SET_SEGMENT (symbolP, zcommon_section); break;
416 case AREA_TDA: S_SET_SEGMENT (symbolP, tcommon_section); break;
417 default:
418 abort();
419 }
420 }
421 }
422 else
423 {
424 input_line_pointer++;
425 /* @@ Some use the dot, some don't. Can we get some consistency?? */
426 if (*input_line_pointer == '.')
427 input_line_pointer++;
428 /* @@ Some say data, some say bss. */
429 if (strncmp (input_line_pointer, "bss\"", 4)
430 && strncmp (input_line_pointer, "data\"", 5))
431 {
432 while (*--input_line_pointer != '"')
433 ;
434 input_line_pointer--;
435 goto bad_common_segment;
436 }
437 while (*input_line_pointer++ != '"')
438 ;
439 goto allocate_common;
440 }
441
442 symbolP->bsym->flags |= BSF_OBJECT;
443
444 demand_empty_rest_of_line ();
445 return;
446
447 {
448 bad_common_segment:
449 p = input_line_pointer;
450 while (*p && *p != '\n')
451 p++;
452 c = *p;
453 *p = '\0';
454 as_bad ("bad .common segment %s", input_line_pointer + 1);
455 *p = c;
456 input_line_pointer = p;
457 ignore_rest_of_line ();
458 return;
459 }
460 }
461
462 void
463 set_machine (int number)
464 {
465 machine = number;
466 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
467
468 switch (machine)
469 {
470 case 0: processor_mask = PROCESSOR_V850; break;
471 /* start-sanitize-v850e */
472 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
473 case bfd_mach_v850ea: processor_mask = PROCESSOR_V850EA; break;
474 /* end-sanitize-v850e */
475 }
476 }
477
478 /* The target specific pseudo-ops which we support. */
479 const pseudo_typeS md_pseudo_table[] =
480 {
481 {"sdata", v850_sdata, 0},
482 {"tdata", v850_tdata, 0},
483 {"zdata", v850_zdata, 0},
484 {"sbss", v850_sbss, 0},
485 {"tbss", v850_tbss, 0},
486 {"zbss", v850_zbss, 0},
487 {"rosdata", v850_rosdata, 0},
488 {"rozdata", v850_rozdata, 0},
489 {"bss", v850_bss, 0},
490 {"offset", v850_offset, 0},
491 {"word", cons, 4},
492 {"zcomm", v850_comm, AREA_ZDA},
493 {"scomm", v850_comm, AREA_SDA},
494 {"tcomm", v850_comm, AREA_TDA},
495 {"v850", set_machine, 0},
496 /* start-sanitize-v850e */
497 {"call_table_data", v850_call_table_data, 0},
498 {"call_table_text", v850_call_table_text, 0},
499 {"v850e", set_machine, bfd_mach_v850e},
500 {"v850ea", set_machine, bfd_mach_v850ea},
501 /* end-sanitize-v850e */
502 { NULL, NULL, 0}
503 };
504
505 /* Opcode hash table. */
506 static struct hash_control *v850_hash;
507
508 /* This table is sorted. Suitable for searching by a binary search. */
509 static const struct reg_name pre_defined_registers[] =
510 {
511 { "ep", 30 }, /* ep - element ptr */
512 { "gp", 4 }, /* gp - global ptr */
513 { "hp", 2 }, /* hp - handler stack ptr */
514 { "lp", 31 }, /* lp - link ptr */
515 { "r0", 0 },
516 { "r1", 1 },
517 { "r10", 10 },
518 { "r11", 11 },
519 { "r12", 12 },
520 { "r13", 13 },
521 { "r14", 14 },
522 { "r15", 15 },
523 { "r16", 16 },
524 { "r17", 17 },
525 { "r18", 18 },
526 { "r19", 19 },
527 { "r2", 2 },
528 { "r20", 20 },
529 { "r21", 21 },
530 { "r22", 22 },
531 { "r23", 23 },
532 { "r24", 24 },
533 { "r25", 25 },
534 { "r26", 26 },
535 { "r27", 27 },
536 { "r28", 28 },
537 { "r29", 29 },
538 { "r3", 3 },
539 { "r30", 30 },
540 { "r31", 31 },
541 { "r4", 4 },
542 { "r5", 5 },
543 { "r6", 6 },
544 { "r7", 7 },
545 { "r8", 8 },
546 { "r9", 9 },
547 { "sp", 3 }, /* sp - stack ptr */
548 { "tp", 5 }, /* tp - text ptr */
549 { "zero", 0 },
550 };
551 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
552
553
554 static const struct reg_name system_registers[] =
555 {
556 /* start-sanitize-v850e */
557 { "ctbp", 20 },
558 { "ctpc", 16 },
559 { "ctpsw", 17 },
560 { "dbpc", 18 },
561 { "dbpsw", 19 },
562 /* end-sanitize-v850e */
563 { "ecr", 4 },
564 { "eipc", 0 },
565 { "eipsw", 1 },
566 { "fepc", 2 },
567 { "fepsw", 3 },
568 { "psw", 5 },
569 };
570 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
571
572 /* start-sanitize-v850e */
573 static const struct reg_name system_list_registers[] =
574 {
575 {"PS", 5 },
576 {"SR", 0 + 1}
577 };
578 #define SYSREGLIST_NAME_CNT (sizeof (system_list_registers) / sizeof (struct reg_name))
579 /* end-sanitize-v850e */
580
581 static const struct reg_name cc_names[] =
582 {
583 { "c", 0x1 },
584 { "e", 0x2 },
585 { "ge", 0xe },
586 { "gt", 0xf },
587 { "h", 0xb },
588 { "l", 0x1 },
589 { "le", 0x7 },
590 { "lt", 0x6 },
591 { "n", 0x4 },
592 { "nc", 0x9 },
593 { "ne", 0xa },
594 { "nh", 0x3 },
595 { "nl", 0x9 },
596 { "ns", 0xc },
597 { "nv", 0x8 },
598 { "nz", 0xa },
599 { "p", 0xc },
600 { "s", 0x4 },
601 { "sa", 0xd },
602 { "t", 0x5 },
603 { "v", 0x0 },
604 { "z", 0x2 },
605 };
606 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
607
608 /* reg_name_search does a binary search of the given register table
609 to see if "name" is a valid regiter name. Returns the register
610 number from the array on success, or -1 on failure. */
611
612 static int
613 reg_name_search (regs, regcount, name, accept_numbers)
614 const struct reg_name * regs;
615 int regcount;
616 const char * name;
617 boolean accept_numbers;
618 {
619 int middle, low, high;
620 int cmp;
621 symbolS * symbolP;
622
623 /* If the register name is a symbol, then evaluate it. */
624 if ((symbolP = symbol_find (name)) != NULL)
625 {
626 /* If the symbol is an alias for another name then use that.
627 If the symbol is an alias for a number, then return the number. */
628 if (symbolP->sy_value.X_op == O_symbol)
629 {
630 name = S_GET_NAME (symbolP->sy_value.X_add_symbol);
631 }
632 else if (accept_numbers)
633 {
634 int reg = S_GET_VALUE (symbolP);
635
636 if (reg >= 0 && reg <= 31)
637 return reg;
638 }
639 }
640
641 low = 0;
642 high = regcount - 1;
643
644 do
645 {
646 middle = (low + high) / 2;
647 cmp = strcasecmp (name, regs[middle].name);
648 if (cmp < 0)
649 high = middle - 1;
650 else if (cmp > 0)
651 low = middle + 1;
652 else
653 return regs[middle].value;
654 }
655 while (low <= high);
656 return -1;
657 }
658
659
660 /* Summary of register_name().
661 *
662 * in: Input_line_pointer points to 1st char of operand.
663 *
664 * out: A expressionS.
665 * The operand may have been a register: in this case, X_op == O_register,
666 * X_add_number is set to the register number, and truth is returned.
667 * Input_line_pointer->(next non-blank) char after operand, or is in
668 * its original state.
669 */
670 static boolean
671 register_name (expressionP)
672 expressionS * expressionP;
673 {
674 int reg_number;
675 char * name;
676 char * start;
677 char c;
678
679 /* Find the spelling of the operand */
680 start = name = input_line_pointer;
681
682 c = get_symbol_end ();
683
684 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT,
685 name, FALSE);
686
687 * input_line_pointer = c; /* put back the delimiting char */
688
689 /* look to see if it's in the register table */
690 if (reg_number >= 0)
691 {
692 expressionP->X_op = O_register;
693 expressionP->X_add_number = reg_number;
694
695 /* make the rest nice */
696 expressionP->X_add_symbol = NULL;
697 expressionP->X_op_symbol = NULL;
698
699 return true;
700 }
701 else
702 {
703 /* reset the line as if we had not done anything */
704 input_line_pointer = start;
705
706 return false;
707 }
708 }
709
710 /* Summary of system_register_name().
711 *
712 * in: Input_line_pointer points to 1st char of operand.
713 * expressionP points to an expression structure to be filled in.
714 * accept_numbers is true iff numerical register names may be used.
715 * start-sanitize-v850e
716 * accept_list_names is true iff the special names PS and SR may be
717 * accepted.
718 * end-sanitize-v850e
719 *
720 * out: A expressionS structure in expressionP.
721 * The operand may have been a register: in this case, X_op == O_register,
722 * X_add_number is set to the register number, and truth is returned.
723 * Input_line_pointer->(next non-blank) char after operand, or is in
724 * its original state.
725 */
726 static boolean
727 system_register_name (expressionP, accept_numbers
728 /* start-sanitize-v850e */
729 , accept_list_names
730 /* end-sanitize-v850e */
731 )
732 expressionS * expressionP;
733 boolean accept_numbers;
734 /* start-sanitize-v850e */
735 boolean accept_list_names;
736 /* end-sanitize-v850e */
737 {
738 int reg_number;
739 char * name;
740 char * start;
741 char c;
742
743 /* Find the spelling of the operand */
744 start = name = input_line_pointer;
745
746 c = get_symbol_end ();
747 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name,
748 accept_numbers);
749
750 * input_line_pointer = c; /* put back the delimiting char */
751
752 if (reg_number < 0
753 && accept_numbers)
754 {
755 input_line_pointer = start; /* reset input_line pointer */
756
757 if (isdigit (* input_line_pointer))
758 {
759 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
760
761 /* Make sure that the register number is allowable. */
762 if ( reg_number < 0
763 || reg_number > 5
764 /* start-sanitize-v850e */
765 && reg_number < 16
766 || reg_number > 20
767 /* end-sanitize-v850e */
768 )
769 {
770 reg_number = -1;
771 }
772 }
773 /* start-sanitize-v850e */
774 else if (accept_list_names)
775 {
776 c = get_symbol_end ();
777 reg_number = reg_name_search (system_list_registers,
778 SYSREGLIST_NAME_CNT, name, FALSE);
779
780 * input_line_pointer = c; /* put back the delimiting char */
781 }
782 /* end-sanitize-v850e */
783 }
784
785 /* look to see if it's in the register table */
786 if (reg_number >= 0)
787 {
788 expressionP->X_op = O_register;
789 expressionP->X_add_number = reg_number;
790
791 /* make the rest nice */
792 expressionP->X_add_symbol = NULL;
793 expressionP->X_op_symbol = NULL;
794
795 return true;
796 }
797 else
798 {
799 /* reset the line as if we had not done anything */
800 input_line_pointer = start;
801
802 return false;
803 }
804 }
805
806 /* Summary of cc_name().
807 *
808 * in: Input_line_pointer points to 1st char of operand.
809 *
810 * out: A expressionS.
811 * The operand may have been a register: in this case, X_op == O_register,
812 * X_add_number is set to the register number, and truth is returned.
813 * Input_line_pointer->(next non-blank) char after operand, or is in
814 * its original state.
815 */
816 static boolean
817 cc_name (expressionP)
818 expressionS * expressionP;
819 {
820 int reg_number;
821 char * name;
822 char * start;
823 char c;
824
825 /* Find the spelling of the operand */
826 start = name = input_line_pointer;
827
828 c = get_symbol_end ();
829 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE);
830
831 * input_line_pointer = c; /* put back the delimiting char */
832
833 /* look to see if it's in the register table */
834 if (reg_number >= 0)
835 {
836 expressionP->X_op = O_constant;
837 expressionP->X_add_number = reg_number;
838
839 /* make the rest nice */
840 expressionP->X_add_symbol = NULL;
841 expressionP->X_op_symbol = NULL;
842
843 return true;
844 }
845 else
846 {
847 /* reset the line as if we had not done anything */
848 input_line_pointer = start;
849
850 return false;
851 }
852 }
853
854 static void
855 skip_white_space (void)
856 {
857 while ( * input_line_pointer == ' '
858 || * input_line_pointer == '\t')
859 ++ input_line_pointer;
860 }
861
862 /* start-sanitize-v850e */
863 /* Summary of parse_register_list ().
864 *
865 * in: Input_line_pointer points to 1st char of a list of registers.
866 * insn is the partially constructed instruction.
867 * operand is the operand being inserted.
868 *
869 * out: NULL if the parse completed successfully, otherwise a
870 * pointer to an error message is returned. If the parse
871 * completes the correct bit fields in the instruction
872 * will be filled in.
873 *
874 * Parses register lists with the syntax:
875 *
876 * { rX }
877 * { rX, rY }
878 * { rX - rY }
879 * { rX - rY, rZ }
880 * etc
881 *
882 * and also parses constant epxressions whoes bits indicate the
883 * registers in the lists. The LSB in the expression refers to
884 * the lowest numbered permissable register in the register list,
885 * and so on upwards. System registers are considered to be very
886 * high numbers.
887 *
888 */
889 static char *
890 parse_register_list
891 (
892 unsigned long * insn,
893 const struct v850_operand * operand
894 )
895 {
896 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 };
897 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 };
898 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 };
899 int * regs;
900 expressionS exp;
901
902
903 /* Select a register array to parse. */
904 switch (operand->shift)
905 {
906 case 0xffe00001: regs = type1_regs; break;
907 case 0xfff8000f: regs = type2_regs; break;
908 case 0xfff8001f: regs = type3_regs; break;
909 default:
910 as_bad ("unknown operand shift: %x\n", operand->shift );
911 return "internal failure in parse_register_list";
912 }
913
914 skip_white_space();
915
916 /* If the expression starts with a curly brace it is a register list.
917 Otherwise it is a constant expression, whoes bits indicate which
918 registers are to be included in the list. */
919
920 if (* input_line_pointer != '{')
921 {
922 int bits;
923 int reg;
924 int i;
925
926 expression (& exp);
927
928 if (exp.X_op != O_constant)
929 return "constant expression or register list expected";
930
931 if (regs == type1_regs)
932 {
933 if (exp.X_add_number & 0xFFFFF000)
934 return "high bits set in register list expression";
935
936 for (reg = 20; reg < 32; reg ++)
937 if (exp.X_add_number & (1 << (reg - 20)))
938 {
939 for (i = 0; i < 32; i++)
940 if (regs[i] == reg)
941 * insn |= (1 << i);
942 }
943 }
944 else if (regs == type2_regs)
945 {
946 if (exp.X_add_number & 0xFFFE0000)
947 return "high bits set in register list expression";
948
949 for (reg = 1; reg < 16; reg ++)
950 if (exp.X_add_number & (1 << (reg - 1)))
951 {
952 for (i = 0; i < 32; i++)
953 if (regs[i] == reg)
954 * insn |= (1 << i);
955 }
956
957 if (exp.X_add_number & (1 << 15))
958 * insn |= (1 << 3);
959
960 if (exp.X_add_number & (1 << 16))
961 * insn |= (1 << 19);
962 }
963 else /* regs == type3_regs */
964 {
965 if (exp.X_add_number & 0xFFFE0000)
966 return "high bits set in register list expression";
967
968 for (reg = 16; reg < 32; reg ++)
969 if (exp.X_add_number & (1 << (reg - 16)))
970 {
971 for (i = 0; i < 32; i++)
972 if (regs[i] == reg)
973 * insn |= (1 << i);
974 }
975
976 if (exp.X_add_number & (1 << 16))
977 * insn |= (1 << 19);
978 }
979
980 return NULL;
981 }
982
983 input_line_pointer ++;
984
985 /* Parse the register list until a terminator (closing curly brace or
986 new-line) is found. */
987 for (;;)
988 {
989 if (register_name (& exp))
990 {
991 int i;
992
993 /* Locate the given register in the list, and if it is there,
994 insert the corresponding bit into the instruction. */
995 for (i = 0; i < 32; i++)
996 {
997 if (regs[ i ] == exp.X_add_number)
998 {
999 * insn |= (1 << i);
1000 break;
1001 }
1002 }
1003
1004 if (i == 32)
1005 {
1006 return "illegal register included in list";
1007 }
1008 }
1009 else if (system_register_name (& exp, true, true))
1010 {
1011 if (regs == type1_regs)
1012 {
1013 return "system registers cannot be included in list";
1014 }
1015 else if (exp.X_add_number == 5)
1016 {
1017 if (regs == type2_regs)
1018 return "PSW cannot be included in list";
1019 else
1020 * insn |= 0x8;
1021 }
1022 else if (exp.X_add_number < 4)
1023 * insn |= 0x80000;
1024 else
1025 return "High value system registers cannot be included in list";
1026 }
1027 else if (* input_line_pointer == '}')
1028 {
1029 input_line_pointer ++;
1030 break;
1031 }
1032 else if (* input_line_pointer == ',')
1033 {
1034 input_line_pointer ++;
1035 continue;
1036 }
1037 else if (* input_line_pointer == '-')
1038 {
1039 /* We have encountered a range of registers: rX - rY */
1040 int j;
1041 expressionS exp2;
1042
1043 /* Skip the dash. */
1044 ++ input_line_pointer;
1045
1046 /* Get the second register in the range. */
1047 if (! register_name (& exp2))
1048 {
1049 return "second register should follow dash in register list";
1050 exp2.X_add_number = exp.X_add_number;
1051 }
1052
1053 /* Add the rest of the registers in the range. */
1054 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
1055 {
1056 int i;
1057
1058 /* Locate the given register in the list, and if it is there,
1059 insert the corresponding bit into the instruction. */
1060 for (i = 0; i < 32; i++)
1061 {
1062 if (regs[ i ] == j)
1063 {
1064 * insn |= (1 << i);
1065 break;
1066 }
1067 }
1068
1069 if (i == 32)
1070 {
1071 return "illegal register included in list";
1072 }
1073 }
1074 }
1075 else
1076 {
1077 break;
1078 }
1079
1080 skip_white_space ();
1081 }
1082
1083 return NULL;
1084 }
1085 /* end-sanitize-v850e */
1086
1087 CONST char * md_shortopts = "m:";
1088
1089 struct option md_longopts[] =
1090 {
1091 {NULL, no_argument, NULL, 0}
1092 };
1093 size_t md_longopts_size = sizeof md_longopts;
1094
1095
1096 void
1097 md_show_usage (stream)
1098 FILE * stream;
1099 {
1100 fprintf (stream, "V850 options:\n");
1101 fprintf (stream, "\t-mwarn-signed-overflow Warn if signed immediate values overflow\n");
1102 fprintf (stream, "\t-mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n");
1103 fprintf (stream, "\t-mv850 The code is targeted at the v850\n");
1104 /* start-sanitize-v850e */
1105 fprintf (stream, "\t-mv850e The code is targeted at the v850e\n");
1106 fprintf (stream, "\t-mv850ea The code is targeted at the v850ea\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 fprintf (stderr, "unknown command line option: -%c%s\n", c, arg);
1118 return 0;
1119 }
1120
1121 if (strcmp (arg, "warn-signed-overflow") == 0)
1122 {
1123 warn_signed_overflows = TRUE;
1124 }
1125 else if (strcmp (arg, "warn-unsigned-overflow") == 0)
1126 {
1127 warn_unsigned_overflows = TRUE;
1128 }
1129 else if (strcmp (arg, "v850") == 0)
1130 {
1131 machine = 0;
1132 processor_mask = PROCESSOR_V850;
1133 }
1134 /* start-sanitize-v850e */
1135 else if (strcmp (arg, "v850e") == 0)
1136 {
1137 machine = bfd_mach_v850e;
1138 processor_mask = PROCESSOR_V850E;
1139 }
1140 else if (strcmp (arg, "v850ea") == 0)
1141 {
1142 machine = bfd_mach_v850ea;
1143 processor_mask = PROCESSOR_V850EA;
1144 }
1145 /* end-sanitize-v850e */
1146 else
1147 {
1148 fprintf (stderr, "unknown command line option: -%c%s\n", c, arg);
1149 return 0;
1150 }
1151
1152 return 1;
1153 }
1154
1155 symbolS *
1156 md_undefined_symbol (name)
1157 char * name;
1158 {
1159 return 0;
1160 }
1161
1162 char *
1163 md_atof (type, litp, sizep)
1164 int type;
1165 char * litp;
1166 int * sizep;
1167 {
1168 int prec;
1169 LITTLENUM_TYPE words[4];
1170 char * t;
1171 int i;
1172
1173 switch (type)
1174 {
1175 case 'f':
1176 prec = 2;
1177 break;
1178
1179 case 'd':
1180 prec = 4;
1181 break;
1182
1183 default:
1184 *sizep = 0;
1185 return "bad call to md_atof";
1186 }
1187
1188 t = atof_ieee (input_line_pointer, type, words);
1189 if (t)
1190 input_line_pointer = t;
1191
1192 *sizep = prec * 2;
1193
1194 for (i = prec - 1; i >= 0; i--)
1195 {
1196 md_number_to_chars (litp, (valueT) words[i], 2);
1197 litp += 2;
1198 }
1199
1200 return NULL;
1201 }
1202
1203
1204 /* Very gross. */
1205 void
1206 md_convert_frag (abfd, sec, fragP)
1207 bfd * abfd;
1208 asection * sec;
1209 fragS * fragP;
1210 {
1211 subseg_change (sec, 0);
1212
1213 /* In range conditional or unconditional branch. */
1214 if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2)
1215 {
1216 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
1217 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
1218 fragP->fr_var = 0;
1219 fragP->fr_fix += 2;
1220 }
1221 /* Out of range conditional branch. Emit a branch around a jump. */
1222 else if (fragP->fr_subtype == 1)
1223 {
1224 unsigned char *buffer =
1225 (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
1226
1227 /* Reverse the condition of the first branch. */
1228 buffer[0] ^= 0x08;
1229 /* Mask off all the displacement bits. */
1230 buffer[0] &= 0x8f;
1231 buffer[1] &= 0x07;
1232 /* Now set the displacement bits so that we branch
1233 around the unconditional branch. */
1234 buffer[0] |= 0x30;
1235
1236 /* Now create the unconditional branch + fixup to the final
1237 target. */
1238 md_number_to_chars (buffer + 2, 0x00000780, 4);
1239 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
1240 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1241 + 1);
1242 fragP->fr_var = 0;
1243 fragP->fr_fix += 6;
1244 }
1245 /* Out of range unconditional branch. Emit a jump. */
1246 else if (fragP->fr_subtype == 3)
1247 {
1248 md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4);
1249 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
1250 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int) fragP->fr_opcode
1251 + 1);
1252 fragP->fr_var = 0;
1253 fragP->fr_fix += 4;
1254 }
1255 else
1256 abort ();
1257 }
1258
1259 valueT
1260 md_section_align (seg, addr)
1261 asection * seg;
1262 valueT addr;
1263 {
1264 int align = bfd_get_section_alignment (stdoutput, seg);
1265 return ((addr + (1 << align) - 1) & (-1 << align));
1266 }
1267
1268 void
1269 md_begin ()
1270 {
1271 char * prev_name = "";
1272 register const struct v850_opcode * op;
1273 flagword applicable;
1274
1275 /* start-sanitize-v850e */
1276 if (strncmp (TARGET_CPU, "v850ea", 6) == 0)
1277 {
1278 if (machine == -1)
1279 machine = bfd_mach_v850ea;
1280
1281 if (processor_mask == -1)
1282 processor_mask = PROCESSOR_V850EA;
1283 }
1284 else if (strncmp (TARGET_CPU, "v850e", 5) == 0)
1285 {
1286 if (machine == -1)
1287 machine = bfd_mach_v850e;
1288
1289 if (processor_mask == -1)
1290 processor_mask = PROCESSOR_V850E;
1291 }
1292 else
1293 /* end-sanitize-v850e */
1294 if (strncmp (TARGET_CPU, "v850", 4) == 0)
1295 {
1296 if (machine == -1)
1297 machine = 0;
1298
1299 if (processor_mask == -1)
1300 processor_mask = PROCESSOR_V850;
1301 }
1302 else
1303 as_bad ("Unable to determine default target processor from string: %s",
1304 TARGET_CPU);
1305
1306 v850_hash = hash_new();
1307
1308 /* Insert unique names into hash table. The V850 instruction set
1309 has many identical opcode names that have different opcodes based
1310 on the operands. This hash table then provides a quick index to
1311 the first opcode with a particular name in the opcode table. */
1312
1313 op = v850_opcodes;
1314 while (op->name)
1315 {
1316 if (strcmp (prev_name, op->name))
1317 {
1318 prev_name = (char *) op->name;
1319 hash_insert (v850_hash, op->name, (char *) op);
1320 }
1321 op++;
1322 }
1323
1324 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1325
1326 applicable = bfd_applicable_section_flags (stdoutput);
1327
1328 sdata_section = subseg_new (".sdata", 0);
1329 bfd_set_section_flags (stdoutput, sdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1330
1331 tdata_section = subseg_new (".tdata", 0);
1332 bfd_set_section_flags (stdoutput, tdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1333
1334 zdata_section = subseg_new (".zdata", 0);
1335 bfd_set_section_flags (stdoutput, zdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1336
1337 sbss_section = subseg_new (".sbss", 0);
1338 bfd_set_section_flags (stdoutput, sbss_section, applicable & SEC_ALLOC);
1339 seg_info (sbss_section)->bss = 1;
1340
1341 tbss_section = subseg_new (".tbss", 0);
1342 bfd_set_section_flags (stdoutput, tbss_section, applicable & SEC_ALLOC);
1343 seg_info (tbss_section)->bss = 1;
1344
1345 zbss_section = subseg_new (".zbss", 0);
1346 bfd_set_section_flags (stdoutput, zbss_section, applicable & SEC_ALLOC);
1347 seg_info (zbss_section)->bss = 1;
1348
1349 rosdata_section = subseg_new (".rosdata", 0);
1350 bfd_set_section_flags (stdoutput, rosdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY));
1351
1352 rozdata_section = subseg_new (".rozdata", 0);
1353 bfd_set_section_flags (stdoutput, rozdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY));
1354
1355 scommon_section = subseg_new (".scommon", 0);
1356 bfd_set_section_flags (stdoutput, scommon_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS | SEC_IS_COMMON));
1357
1358 zcommon_section = subseg_new (".zcommon", 0);
1359 bfd_set_section_flags (stdoutput, zcommon_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS | SEC_IS_COMMON));
1360
1361 tcommon_section = subseg_new (".tcommon", 0);
1362 bfd_set_section_flags (stdoutput, tcommon_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS | SEC_IS_COMMON));
1363
1364 /* start-sanitize-v850e */
1365 call_table_data_section = subseg_new (".call_table_data", 0);
1366 bfd_set_section_flags (stdoutput, call_table_data_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1367
1368 call_table_text_section = subseg_new (".call_table_text", 0);
1369 bfd_set_section_flags (stdoutput, call_table_text_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE));
1370 /* end-sanitize-v850e */
1371 }
1372
1373
1374 /* start-sanitize-v850e */
1375 static bfd_reloc_code_real_type
1376 handle_ctoff (const struct v850_operand * operand)
1377 {
1378 if (operand == NULL)
1379 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1380
1381 if ( operand->bits != 6
1382 || operand->shift != 0)
1383 {
1384 as_bad ("ctoff() relocation used on an instruction which does not support it");
1385 return BFD_RELOC_64; /* Used to indicate an error condition. */
1386 }
1387
1388 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1389 }
1390 /* end-sanitize-v850e */
1391
1392 static bfd_reloc_code_real_type
1393 handle_sdaoff (const struct v850_operand * operand)
1394 {
1395 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1396 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1397 /* start-sanitize-v850e */
1398 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1399 /* end-sanitize-v850e */
1400
1401 if ( operand->bits != 16
1402 || operand->shift != 16)
1403 {
1404 as_bad ("sdaoff() relocation used on an instruction which does not support it");
1405 return BFD_RELOC_64; /* Used to indicate an error condition. */
1406 }
1407
1408 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1409 }
1410
1411 static bfd_reloc_code_real_type
1412 handle_zdaoff (const struct v850_operand * operand)
1413 {
1414 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1415 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1416 /* start-sanitize-v850e */
1417 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1418 /* end-sanitize-v850e */
1419
1420 if ( operand->bits != 16
1421 || operand->shift != 16)
1422 {
1423 as_bad ("zdaoff() relocation used on an instruction which does not support it");
1424 return BFD_RELOC_64; /* Used to indicate an error condition. */
1425 }
1426
1427 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1428 }
1429
1430 static bfd_reloc_code_real_type
1431 handle_tdaoff (const struct v850_operand * operand)
1432 {
1433 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1434 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1435 /* start-sanitize-v850e */
1436 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1437 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1438 /* end-sanitize-v850e */
1439 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1440
1441 if (operand->bits != 7)
1442 {
1443 as_bad ("tdaoff() relocation used on an instruction which does not support it");
1444 return BFD_RELOC_64; /* Used to indicate an error condition. */
1445 }
1446
1447 return operand->insert != NULL
1448 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1449 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1450 }
1451
1452 /* Warning: The code in this function relies upon the definitions
1453 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1454 matching the hard coded values contained herein. */
1455
1456 static bfd_reloc_code_real_type
1457 v850_reloc_prefix (const struct v850_operand * operand)
1458 {
1459 boolean paren_skipped = false;
1460
1461
1462 /* Skip leading opening parenthesis. */
1463 if (* input_line_pointer == '(')
1464 {
1465 ++ input_line_pointer;
1466 paren_skipped = true;
1467 }
1468
1469 #define CHECK_(name, reloc) \
1470 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1471 { \
1472 input_line_pointer += strlen (name); \
1473 return reloc; \
1474 }
1475
1476 CHECK_ ("hi0", BFD_RELOC_HI16);
1477 CHECK_ ("hi", BFD_RELOC_HI16_S);
1478 CHECK_ ("lo", BFD_RELOC_LO16);
1479 CHECK_ ("sdaoff", handle_sdaoff (operand));
1480 CHECK_ ("zdaoff", handle_zdaoff (operand));
1481 CHECK_ ("tdaoff", handle_tdaoff (operand));
1482
1483 /* start-sanitize-v850e */
1484 CHECK_ ("hilo", BFD_RELOC_32);
1485 CHECK_ ("ctoff", handle_ctoff (operand));
1486 /* end-sanitize-v850e */
1487
1488 /* Restore skipped parenthesis. */
1489 if (paren_skipped)
1490 -- input_line_pointer;
1491
1492 return BFD_RELOC_UNUSED;
1493 }
1494
1495 /* Insert an operand value into an instruction. */
1496
1497 static unsigned long
1498 v850_insert_operand (insn, operand, val, file, line, str)
1499 unsigned long insn;
1500 const struct v850_operand * operand;
1501 offsetT val;
1502 char * file;
1503 unsigned int line;
1504 char * str;
1505 {
1506 if (operand->insert)
1507 {
1508 const char * message = NULL;
1509
1510 insn = operand->insert (insn, val, & message);
1511 if (message != NULL)
1512 {
1513 if ((operand->flags & V850_OPERAND_SIGNED)
1514 && ! warn_signed_overflows
1515 && strstr (message, "out of range") != NULL)
1516 {
1517 /* skip warning... */
1518 }
1519 else if ((operand->flags & V850_OPERAND_SIGNED) == 0
1520 && ! warn_unsigned_overflows
1521 && strstr (message, "out of range") != NULL)
1522 {
1523 /* skip warning... */
1524 }
1525 else if (str)
1526 {
1527 if (file == (char *) NULL)
1528 as_warn ("%s: %s", str, message);
1529 else
1530 as_warn_where (file, line, "%s: %s", str, message);
1531 }
1532 else
1533 {
1534 if (file == (char *) NULL)
1535 as_warn (message);
1536 else
1537 as_warn_where (file, line, message);
1538 }
1539 }
1540 }
1541 else
1542 {
1543 if (operand->bits != 32)
1544 {
1545 long min, max;
1546 offsetT test;
1547
1548 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1549 {
1550 if (! warn_signed_overflows)
1551 max = (1 << operand->bits) - 1;
1552 else
1553 max = (1 << (operand->bits - 1)) - 1;
1554
1555 min = - (1 << (operand->bits - 1));
1556 }
1557 else
1558 {
1559 max = (1 << operand->bits) - 1;
1560
1561 if (! warn_unsigned_overflows)
1562 min = - (1 << (operand->bits - 1));
1563 else
1564 min = 0;
1565 }
1566
1567 if (val < (offsetT) min || val > (offsetT) max)
1568 {
1569 const char * err = "operand out of range (%s not between %ld and %ld)";
1570 char buf[100];
1571
1572 /* Restore min and mix to expected values for decimal ranges. */
1573 if ((operand->flags & V850_OPERAND_SIGNED)
1574 && ! warn_signed_overflows)
1575 max = (1 << (operand->bits - 1)) - 1;
1576
1577 if (! (operand->flags & V850_OPERAND_SIGNED)
1578 && ! warn_unsigned_overflows)
1579 min = 0;
1580
1581 if (str)
1582 {
1583 sprintf (buf, "%s: ", str);
1584
1585 sprint_value (buf + strlen (buf), val);
1586 }
1587 else
1588 sprint_value (buf, val);
1589
1590 if (file == (char *) NULL)
1591 as_warn (err, buf, min, max);
1592 else
1593 as_warn_where (file, line, err, buf, min, max);
1594 }
1595 }
1596
1597 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1598 }
1599
1600 return insn;
1601 }
1602
1603 \f
1604 static char copy_of_instruction [128];
1605
1606 void
1607 md_assemble (str)
1608 char * str;
1609 {
1610 char * s;
1611 char * start_of_operands;
1612 struct v850_opcode * opcode;
1613 struct v850_opcode * next_opcode;
1614 const unsigned char * opindex_ptr;
1615 int next_opindex;
1616 int relaxable;
1617 unsigned long insn;
1618 unsigned long insn_size;
1619 char * f;
1620 int i;
1621 int match;
1622 boolean extra_data_after_insn = false;
1623 unsigned extra_data_len;
1624 unsigned long extra_data;
1625 char * saved_input_line_pointer;
1626
1627
1628 strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1);
1629
1630 /* Get the opcode. */
1631 for (s = str; *s != '\0' && ! isspace (*s); s++)
1632 continue;
1633
1634 if (*s != '\0')
1635 *s++ = '\0';
1636
1637 /* find the first opcode with the proper name */
1638 opcode = (struct v850_opcode *) hash_find (v850_hash, str);
1639 if (opcode == NULL)
1640 {
1641 as_bad ("Unrecognized opcode: `%s'", str);
1642 ignore_rest_of_line ();
1643 return;
1644 }
1645
1646 str = s;
1647 while (isspace (* str))
1648 ++ str;
1649
1650 start_of_operands = str;
1651
1652 saved_input_line_pointer = input_line_pointer;
1653
1654 for (;;)
1655 {
1656 const char * errmsg = NULL;
1657
1658 match = 0;
1659
1660 if ((opcode->processors & processor_mask) == 0)
1661 {
1662 errmsg = "Target processor does not support this instruction.";
1663 goto error;
1664 }
1665
1666 relaxable = 0;
1667 fc = 0;
1668 next_opindex = 0;
1669 insn = opcode->opcode;
1670 extra_data_after_insn = false;
1671
1672 input_line_pointer = str = start_of_operands;
1673
1674 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr ++)
1675 {
1676 const struct v850_operand * operand;
1677 char * hold;
1678 expressionS ex;
1679 bfd_reloc_code_real_type reloc;
1680
1681 if (next_opindex == 0)
1682 {
1683 operand = & v850_operands[ * opindex_ptr ];
1684 }
1685 else
1686 {
1687 operand = & v850_operands[ next_opindex ];
1688 next_opindex = 0;
1689 }
1690
1691 errmsg = NULL;
1692
1693 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1694 ++ str;
1695
1696 if (operand->flags & V850_OPERAND_RELAX)
1697 relaxable = 1;
1698
1699 /* Gather the operand. */
1700 hold = input_line_pointer;
1701 input_line_pointer = str;
1702
1703 /* lo(), hi(), hi0(), etc... */
1704 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1705 {
1706 /* This is a fake reloc, used to indicate an error condition. */
1707 if (reloc == BFD_RELOC_64)
1708 {
1709 match = 1;
1710 goto error;
1711 }
1712
1713 expression (& ex);
1714
1715 if (ex.X_op == O_constant)
1716 {
1717 switch (reloc)
1718 {
1719 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1720 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]"
1721 and the like. */
1722 /* Fall through. */
1723
1724 case BFD_RELOC_LO16:
1725 {
1726 /* Truncate, then sign extend the value. */
1727 ex.X_add_number = SEXT16 (ex.X_add_number);
1728 break;
1729 }
1730
1731 case BFD_RELOC_HI16:
1732 {
1733 /* Truncate, then sign extend the value. */
1734 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1735 break;
1736 }
1737
1738 case BFD_RELOC_HI16_S:
1739 {
1740 /* Truncate, then sign extend the value. */
1741 int temp = (ex.X_add_number >> 16) & 0xffff;
1742
1743 temp += (ex.X_add_number >> 15) & 1;
1744
1745 ex.X_add_number = SEXT16 (temp);
1746 break;
1747 }
1748
1749 /* start-sanitize-v850e */
1750 case BFD_RELOC_32:
1751 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1752 {
1753 errmsg = "immediate operand is too large";
1754 goto error;
1755 }
1756
1757 extra_data_after_insn = true;
1758 extra_data_len = 4;
1759 extra_data = ex.X_add_number;
1760 ex.X_add_number = 0;
1761 break;
1762 /* end-sanitize-v850e */
1763
1764 default:
1765 fprintf (stderr, "reloc: %d\n", reloc);
1766 as_bad ("AAARG -> unhandled constant reloc");
1767 break;
1768 }
1769
1770 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1771 (char *) NULL, 0,
1772 copy_of_instruction);
1773 }
1774 else
1775 {
1776 /* start-sanitize-v850e */
1777 if (reloc == BFD_RELOC_32)
1778 {
1779 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1780 {
1781 errmsg = "immediate operand is too large";
1782 goto error;
1783 }
1784
1785 extra_data_after_insn = true;
1786 extra_data_len = 4;
1787 extra_data = ex.X_add_number;
1788 }
1789 /* end-sanitize-v850e */
1790
1791 if (fc > MAX_INSN_FIXUPS)
1792 as_fatal ("too many fixups");
1793
1794 fixups[ fc ].exp = ex;
1795 fixups[ fc ].opindex = * opindex_ptr;
1796 fixups[ fc ].reloc = reloc;
1797 fc++;
1798 }
1799 }
1800 else
1801 {
1802 errmsg = NULL;
1803
1804 if ((operand->flags & V850_OPERAND_REG) != 0)
1805 {
1806 if (!register_name (& ex))
1807 {
1808 errmsg = "invalid register name";
1809 }
1810 else if ((operand->flags & V850_NOT_R0)
1811 && ex.X_add_number == 0)
1812 {
1813 errmsg = "register r0 cannot be used here";
1814
1815 /* Force an error message to be generated by
1816 skipping over any following potential matches
1817 for this opcode. */
1818 opcode += 3;
1819 }
1820 }
1821 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1822 {
1823 if (!system_register_name (& ex, true
1824 /* start-sanitize-v850e */
1825 , false
1826 /* end-sanitize-v850e */
1827 ))
1828 {
1829 errmsg = "invalid system register name";
1830 }
1831 }
1832 else if ((operand->flags & V850_OPERAND_EP) != 0)
1833 {
1834 char * start = input_line_pointer;
1835 char c = get_symbol_end ();
1836
1837 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1838 {
1839 /* Put things back the way we found them. */
1840 *input_line_pointer = c;
1841 input_line_pointer = start;
1842 errmsg = "expected EP register";
1843 goto error;
1844 }
1845
1846 *input_line_pointer = c;
1847 str = input_line_pointer;
1848 input_line_pointer = hold;
1849
1850 while ( *str == ' ' || *str == ',' || *str == '['
1851 || *str == ']')
1852 ++ str;
1853 continue;
1854 }
1855 else if ((operand->flags & V850_OPERAND_CC) != 0)
1856 {
1857 if (!cc_name (& ex))
1858 {
1859 errmsg = "invalid condition code name";
1860 }
1861 }
1862 /* start-sanitize-v850e */
1863 else if (operand->flags & V850E_PUSH_POP)
1864 {
1865 errmsg = parse_register_list (& insn, operand);
1866
1867 /* The parse_register_list() function has already done
1868 everything, so fake a dummy expression. */
1869 ex.X_op = O_constant;
1870 ex.X_add_number = 0;
1871 }
1872 else if (operand->flags & V850E_IMMEDIATE16)
1873 {
1874 expression (& ex);
1875
1876 if (ex.X_op != O_constant)
1877 errmsg = "constant expression expected";
1878 else if (ex.X_add_number & 0xffff0000)
1879 {
1880 if (ex.X_add_number & 0xffff)
1881 errmsg = "constant too big to fit into instruction";
1882 else if ((insn & 0x001fffc0) == 0x00130780)
1883 ex.X_add_number >>= 16;
1884 else
1885 errmsg = "constant too big to fit into instruction";
1886 }
1887
1888 extra_data_after_insn = true;
1889 extra_data_len = 2;
1890 extra_data = ex.X_add_number;
1891 ex.X_add_number = 0;
1892 }
1893 else if (operand->flags & V850E_IMMEDIATE32)
1894 {
1895 expression (& ex);
1896
1897 if (ex.X_op != O_constant)
1898 errmsg = "constant expression expected";
1899
1900 extra_data_after_insn = true;
1901 extra_data_len = 4;
1902 extra_data = ex.X_add_number;
1903 ex.X_add_number = 0;
1904 }
1905 /* end-sanitize-v850e */
1906 else if (register_name (& ex)
1907 && (operand->flags & V850_OPERAND_REG) == 0)
1908 {
1909 /* It is possible that an alias has been defined that
1910 matches a register name. For example the code may
1911 include a ".set ZERO, 0" directive, which matches
1912 the register name "zero". Attempt to reparse the
1913 field as an expression, and only complain if we
1914 cannot generate a constant. */
1915
1916 input_line_pointer = str;
1917
1918 expression (& ex);
1919
1920 if (ex.X_op != O_constant)
1921 {
1922 /* If this register is actually occuring too early on
1923 the parsing of the instruction, (because another
1924 field is missing) then report this. */
1925 if (opindex_ptr[1] != 0
1926 && (v850_operands [opindex_ptr [1]].flags & V850_OPERAND_REG))
1927 errmsg = "syntax error: value is missing before the register name";
1928 else
1929 errmsg = "syntax error: register not expected";
1930 }
1931 }
1932 else if (system_register_name (& ex, false
1933 /* start-sanitize-v850e */
1934 , false
1935 /* end-sanitize-v850e */
1936 )
1937 && (operand->flags & V850_OPERAND_SRG) == 0)
1938 {
1939 errmsg = "syntax error: system register not expected";
1940 }
1941 else if (cc_name (&ex)
1942 && (operand->flags & V850_OPERAND_CC) == 0)
1943 {
1944 errmsg = "syntax error: condition code not expected";
1945 }
1946 else
1947 {
1948 expression (& ex);
1949 /* start-sanitize-v850e */
1950 /* Special case:
1951 If we are assembling a MOV instruction (or a CALLT.... :-)
1952 and the immediate value does not fit into the bits
1953 available then create a fake error so that the next MOV
1954 instruction will be selected. This one has a 32 bit
1955 immediate field. */
1956
1957 if (((insn & 0x07e0) == 0x0200)
1958 && ex.X_op == O_constant
1959 && (ex.X_add_number < (- (1 << (operand->bits - 1))) || 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", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number); */
1968
1969 switch (ex.X_op)
1970 {
1971 case O_illegal:
1972 errmsg = "illegal operand";
1973 goto error;
1974 case O_absent:
1975 errmsg = "missing operand";
1976 goto error;
1977 case O_register:
1978 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
1979 {
1980 errmsg = "invalid operand";
1981 goto error;
1982 }
1983 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1984 (char *) NULL, 0,
1985 copy_of_instruction);
1986 break;
1987
1988 case O_constant:
1989 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1990 (char *) NULL, 0,
1991 copy_of_instruction);
1992 break;
1993
1994 default:
1995 /* We need to generate a fixup for this expression. */
1996 if (fc >= MAX_INSN_FIXUPS)
1997 as_fatal ("too many fixups");
1998
1999 fixups[ fc ].exp = ex;
2000 fixups[ fc ].opindex = * opindex_ptr;
2001 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
2002 ++fc;
2003 break;
2004 }
2005 }
2006
2007 str = input_line_pointer;
2008 input_line_pointer = hold;
2009
2010 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
2011 || *str == ')')
2012 ++str;
2013 }
2014 match = 1;
2015
2016 error:
2017 if (match == 0)
2018 {
2019 next_opcode = opcode + 1;
2020 if (next_opcode->name != NULL
2021 && strcmp (next_opcode->name, opcode->name) == 0)
2022 {
2023 opcode = next_opcode;
2024
2025 /* Skip versions that are not supported by the target
2026 processor. */
2027 if ((opcode->processors & processor_mask) == 0)
2028 goto error;
2029
2030 continue;
2031 }
2032
2033 as_bad ("%s: %s", copy_of_instruction, errmsg);
2034
2035 if (* input_line_pointer == ']')
2036 ++ input_line_pointer;
2037
2038 ignore_rest_of_line ();
2039 input_line_pointer = saved_input_line_pointer;
2040 return;
2041 }
2042 break;
2043 }
2044
2045 while (isspace (*str))
2046 ++str;
2047
2048 if (*str != '\0')
2049 as_bad ("junk at end of line: `%s'", str);
2050
2051 input_line_pointer = str;
2052
2053 /* Write out the instruction. */
2054
2055 if (relaxable && fc > 0)
2056 {
2057 insn_size = 2;
2058 fc = 0;
2059
2060 if (!strcmp (opcode->name, "br"))
2061 {
2062 f = frag_var (rs_machine_dependent, 4, 2, 2,
2063 fixups[0].exp.X_add_symbol,
2064 fixups[0].exp.X_add_number,
2065 (char *)fixups[0].opindex);
2066 md_number_to_chars (f, insn, insn_size);
2067 md_number_to_chars (f + 2, 0, 2);
2068 }
2069 else
2070 {
2071 f = frag_var (rs_machine_dependent, 6, 4, 0,
2072 fixups[0].exp.X_add_symbol,
2073 fixups[0].exp.X_add_number,
2074 (char *)fixups[0].opindex);
2075 md_number_to_chars (f, insn, insn_size);
2076 md_number_to_chars (f + 2, 0, 4);
2077 }
2078 }
2079 else
2080 {
2081 /* Four byte insns have an opcode with the two high bits on. */
2082 if ((insn & 0x0600) == 0x0600)
2083 insn_size = 4;
2084 else
2085 insn_size = 2;
2086
2087 /* start-sanitize-v850e */
2088 /* Special case: 32 bit MOV */
2089 if ((insn & 0xffe0) == 0x0620)
2090 insn_size = 2;
2091 /* end-sanitize-v850e */
2092
2093 f = frag_more (insn_size);
2094
2095 md_number_to_chars (f, insn, insn_size);
2096
2097 if (extra_data_after_insn)
2098 {
2099 f = frag_more (extra_data_len);
2100
2101 md_number_to_chars (f, extra_data, extra_data_len);
2102
2103 extra_data_after_insn = false;
2104 }
2105 }
2106
2107 /* Create any fixups. At this point we do not use a
2108 bfd_reloc_code_real_type, but instead just use the
2109 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2110 handle fixups for any operand type, although that is admittedly
2111 not a very exciting feature. We pick a BFD reloc type in
2112 md_apply_fix. */
2113 for (i = 0; i < fc; i++)
2114 {
2115 const struct v850_operand * operand;
2116 bfd_reloc_code_real_type reloc;
2117
2118 operand = & v850_operands[ fixups[i].opindex ];
2119
2120 reloc = fixups[i].reloc;
2121
2122 if (reloc != BFD_RELOC_UNUSED)
2123 {
2124 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput,
2125 reloc);
2126 int size;
2127 int address;
2128 fixS * fixP;
2129
2130 if (!reloc_howto)
2131 abort();
2132
2133 size = bfd_get_reloc_size (reloc_howto);
2134
2135 /* XXX This will abort on an R_V850_8 reloc -
2136 is this reloc actually used ? */
2137 if (size != 2 && size != 4)
2138 abort();
2139
2140 address = (f - frag_now->fr_literal) + insn_size - size;
2141
2142 if (reloc == BFD_RELOC_32)
2143 {
2144 address += 2;
2145 }
2146
2147 fixP = fix_new_exp (frag_now, address, size,
2148 & fixups[i].exp,
2149 reloc_howto->pc_relative,
2150 reloc);
2151
2152 switch (reloc)
2153 {
2154 case BFD_RELOC_LO16:
2155 case BFD_RELOC_HI16:
2156 case BFD_RELOC_HI16_S:
2157 fixP->fx_no_overflow = 1;
2158 break;
2159 }
2160 }
2161 else
2162 {
2163 fix_new_exp (
2164 frag_now,
2165 f - frag_now->fr_literal, 4,
2166 & fixups[i].exp,
2167 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
2168 (bfd_reloc_code_real_type) (fixups[i].opindex
2169 + (int) BFD_RELOC_UNUSED)
2170 );
2171 }
2172 }
2173
2174 input_line_pointer = saved_input_line_pointer;
2175 }
2176
2177
2178 /* If while processing a fixup, a reloc really needs to be created */
2179 /* then it is done here. */
2180
2181 arelent *
2182 tc_gen_reloc (seg, fixp)
2183 asection * seg;
2184 fixS * fixp;
2185 {
2186 arelent * reloc;
2187
2188 reloc = (arelent *) xmalloc (sizeof (arelent));
2189 reloc->sym_ptr_ptr = & fixp->fx_addsy->bsym;
2190 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2191 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
2192
2193 if (reloc->howto == (reloc_howto_type *) NULL)
2194 {
2195 as_bad_where (fixp->fx_file, fixp->fx_line,
2196 "reloc %d not supported by object file format",
2197 (int)fixp->fx_r_type);
2198
2199 xfree (reloc);
2200
2201 return NULL;
2202 }
2203
2204 reloc->addend = fixp->fx_addnumber;
2205
2206 return reloc;
2207 }
2208
2209 /* Assume everything will fit in two bytes, then expand as necessary. */
2210 int
2211 md_estimate_size_before_relax (fragp, seg)
2212 fragS * fragp;
2213 asection * seg;
2214 {
2215 if (fragp->fr_subtype == 0)
2216 fragp->fr_var = 4;
2217 else if (fragp->fr_subtype == 2)
2218 fragp->fr_var = 2;
2219 else
2220 abort ();
2221 return 2;
2222 }
2223
2224 long
2225 md_pcrel_from (fixp)
2226 fixS * fixp;
2227 {
2228 /* If the symbol is undefined, or in a section other than our own,
2229 then let the linker figure it out. */
2230 if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
2231 {
2232 /* The symbol is undefined. Let the linker figure it out. */
2233 return 0;
2234 }
2235 return fixp->fx_frag->fr_address + fixp->fx_where;
2236 }
2237
2238 int
2239 md_apply_fix3 (fixp, valuep, seg)
2240 fixS * fixp;
2241 valueT * valuep;
2242 segT seg;
2243 {
2244 valueT value;
2245 char * where;
2246
2247 if (fixp->fx_addsy == (symbolS *) NULL)
2248 {
2249 value = * valuep;
2250 fixp->fx_done = 1;
2251 }
2252 else if (fixp->fx_pcrel)
2253 value = * valuep;
2254 else
2255 {
2256 value = fixp->fx_offset;
2257 if (fixp->fx_subsy != (symbolS *) NULL)
2258 {
2259 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
2260 value -= S_GET_VALUE (fixp->fx_subsy);
2261 else
2262 {
2263 /* We don't actually support subtracting a symbol. */
2264 as_bad_where (fixp->fx_file, fixp->fx_line,
2265 "expression too complex");
2266 }
2267 }
2268 }
2269
2270 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
2271 {
2272 int opindex;
2273 const struct v850_operand * operand;
2274 unsigned long insn;
2275
2276 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
2277 operand = & v850_operands[ opindex ];
2278
2279 /* Fetch the instruction, insert the fully resolved operand
2280 value, and stuff the instruction back again.
2281
2282 Note the instruction has been stored in little endian
2283 format! */
2284 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2285
2286 insn = bfd_getl32 ((unsigned char *) where);
2287 insn = v850_insert_operand (insn, operand, (offsetT) value,
2288 fixp->fx_file, fixp->fx_line, NULL);
2289 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
2290
2291 if (fixp->fx_done)
2292 {
2293 /* Nothing else to do here. */
2294 return 1;
2295 }
2296
2297 /* Determine a BFD reloc value based on the operand information.
2298 We are only prepared to turn a few of the operands into relocs. */
2299
2300 if (operand->bits == 22)
2301 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
2302 else if (operand->bits == 9)
2303 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
2304 else
2305 {
2306 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
2307
2308 as_bad_where(fixp->fx_file, fixp->fx_line,
2309 "unresolved expression that must be resolved");
2310 fixp->fx_done = 1;
2311 return 1;
2312 }
2313 }
2314 else if (fixp->fx_done)
2315 {
2316 /* We still have to insert the value into memory! */
2317 where = fixp->fx_frag->fr_literal + fixp->fx_where;
2318
2319 if (fixp->fx_size == 1)
2320 *where = value & 0xff;
2321 else if (fixp->fx_size == 2)
2322 bfd_putl16 (value & 0xffff, (unsigned char *) where);
2323 else if (fixp->fx_size == 4)
2324 bfd_putl32 (value, (unsigned char *) where);
2325 }
2326
2327 fixp->fx_addnumber = value;
2328 return 1;
2329 }
2330
2331 \f
2332 /* Parse a cons expression. We have to handle hi(), lo(), etc
2333 on the v850. */
2334 void
2335 parse_cons_expression_v850 (exp)
2336 expressionS *exp;
2337 {
2338 /* See if there's a reloc prefix like hi() we have to handle. */
2339 hold_cons_reloc = v850_reloc_prefix (NULL);
2340
2341 /* Do normal expression parsing. */
2342 expression (exp);
2343 }
2344
2345 /* Create a fixup for a cons expression. If parse_cons_expression_v850
2346 found a reloc prefix, then we use that reloc, else we choose an
2347 appropriate one based on the size of the expression. */
2348 void
2349 cons_fix_new_v850 (frag, where, size, exp)
2350 fragS *frag;
2351 int where;
2352 int size;
2353 expressionS *exp;
2354 {
2355 if (hold_cons_reloc == BFD_RELOC_UNUSED)
2356 {
2357 if (size == 4)
2358 hold_cons_reloc = BFD_RELOC_32;
2359 if (size == 2)
2360 hold_cons_reloc = BFD_RELOC_16;
2361 if (size == 1)
2362 hold_cons_reloc = BFD_RELOC_8;
2363 }
2364
2365 if (exp != NULL)
2366 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
2367 else
2368 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
2369 }
GDB Binutils - Deliverables
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