projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
(obj_coff_section [BEF_ASSEMBLER]): Make 'r' mean readonly data.
[deliverable/binutils-gdb.git] / gas / config / tc-v850.c
1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
4
5 This file is part of GAS, the GNU Assembler.
6
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22 #include <stdio.h>
23 #include "as.h"
24 #include "safe-ctype.h"
25 #include "subsegs.h"
26 #include "opcode/v850.h"
27 #include "dwarf2dbg.h"
28
29 /* Sign-extend a 16-bit number. */
30 #define SEXT16(x) ((((x) & 0xffff) ^ (~0x7fff)) + 0x8000)
31
32 /* Temporarily holds the reloc in a cons expression. */
33 static bfd_reloc_code_real_type hold_cons_reloc = BFD_RELOC_UNUSED;
34
35 /* Set to TRUE if we want to be pedantic about signed overflows. */
36 static bfd_boolean warn_signed_overflows = FALSE;
37 static bfd_boolean warn_unsigned_overflows = FALSE;
38
39 /* Indicates the target BFD machine number. */
40 static int machine = -1;
41
42 /* Indicates the target processor(s) for the assemble. */
43 static int processor_mask = -1;
44 \f
45 /* Structure to hold information about predefined registers. */
46 struct reg_name {
47 const char *name;
48 int value;
49 };
50
51 /* Generic assembler global variables which must be defined by all
52 targets. */
53
54 /* Characters which always start a comment. */
55 const char comment_chars[] = "#";
56
57 /* Characters which start a comment at the beginning of a line. */
58 const char line_comment_chars[] = ";#";
59
60 /* Characters which may be used to separate multiple commands on a
61 single line. */
62 const char line_separator_chars[] = ";";
63
64 /* Characters which are used to indicate an exponent in a floating
65 point number. */
66 const char EXP_CHARS[] = "eE";
67
68 /* Characters which mean that a number is a floating point constant,
69 as in 0d1.0. */
70 const char FLT_CHARS[] = "dD";
71 \f
72 const relax_typeS md_relax_table[] = {
73 /* Conditional branches. */
74 {0xff, -0x100, 2, 1},
75 {0x1fffff, -0x200000, 6, 0},
76 /* Unconditional branches. */
77 {0xff, -0x100, 2, 3},
78 {0x1fffff, -0x200000, 4, 0},
79 };
80
81 static int v850_relax = 0;
82
83 /* Fixups. */
84 #define MAX_INSN_FIXUPS (5)
85 struct v850_fixup {
86 expressionS exp;
87 int opindex;
88 bfd_reloc_code_real_type reloc;
89 };
90
91 struct v850_fixup fixups[MAX_INSN_FIXUPS];
92 static int fc;
93
94 struct v850_seg_entry
95 {
96 segT s;
97 const char *name;
98 flagword flags;
99 };
100
101 struct v850_seg_entry v850_seg_table[] =
102 {
103 { NULL, ".sdata",
104 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS
105 | SEC_SMALL_DATA },
106 { NULL, ".tdata",
107 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS },
108 { NULL, ".zdata",
109 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS },
110 { NULL, ".sbss",
111 SEC_ALLOC | SEC_SMALL_DATA },
112 { NULL, ".tbss",
113 SEC_ALLOC },
114 { NULL, ".zbss",
115 SEC_ALLOC},
116 { NULL, ".rosdata",
117 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_DATA
118 | SEC_HAS_CONTENTS | SEC_SMALL_DATA },
119 { NULL, ".rozdata",
120 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_DATA
121 | SEC_HAS_CONTENTS },
122 { NULL, ".scommon",
123 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS
124 | SEC_SMALL_DATA | SEC_IS_COMMON },
125 { NULL, ".tcommon",
126 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS
127 | SEC_IS_COMMON },
128 { NULL, ".zcommon",
129 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS
130 | SEC_IS_COMMON },
131 { NULL, ".call_table_data",
132 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS },
133 { NULL, ".call_table_text",
134 SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_CODE
135 | SEC_HAS_CONTENTS},
136 { NULL, ".bss",
137 SEC_ALLOC }
138 };
139
140 #define SDATA_SECTION 0
141 #define TDATA_SECTION 1
142 #define ZDATA_SECTION 2
143 #define SBSS_SECTION 3
144 #define TBSS_SECTION 4
145 #define ZBSS_SECTION 5
146 #define ROSDATA_SECTION 6
147 #define ROZDATA_SECTION 7
148 #define SCOMMON_SECTION 8
149 #define TCOMMON_SECTION 9
150 #define ZCOMMON_SECTION 10
151 #define CALL_TABLE_DATA_SECTION 11
152 #define CALL_TABLE_TEXT_SECTION 12
153 #define BSS_SECTION 13
154
155 static void do_v850_seg PARAMS ((int, subsegT));
156
157 static void
158 do_v850_seg (i, sub)
159 int i;
160 subsegT sub;
161 {
162 struct v850_seg_entry *seg = v850_seg_table + i;
163
164 obj_elf_section_change_hook ();
165 if (seg->s != NULL)
166 {
167 subseg_set (seg->s, sub);
168 }
169 else
170 {
171 seg->s = subseg_new (seg->name, sub);
172 bfd_set_section_flags (stdoutput, seg->s, seg->flags);
173 if ((seg->flags & SEC_LOAD) == 0)
174 seg_info (seg->s)->bss = 1;
175 }
176 }
177
178 static void v850_seg PARAMS ((int i));
179
180 static void
181 v850_seg (i)
182 int i;
183 {
184 subsegT sub = get_absolute_expression ();
185
186 do_v850_seg (i, sub);
187 demand_empty_rest_of_line ();
188 }
189
190 static void v850_offset PARAMS ((int));
191
192 static void
193 v850_offset (ignore)
194 int ignore ATTRIBUTE_UNUSED;
195 {
196 char *pfrag;
197 int temp = get_absolute_expression ();
198
199 pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, (symbolS *)0,
200 (offsetT) temp, (char *) 0);
201 *pfrag = 0;
202
203 demand_empty_rest_of_line ();
204 }
205
206 /* Copied from obj_elf_common() in gas/config/obj-elf.c. */
207
208 static void v850_comm PARAMS ((int));
209
210 static void
211 v850_comm (area)
212 int area;
213 {
214 char *name;
215 char c;
216 char *p;
217 int temp;
218 unsigned int size;
219 symbolS *symbolP;
220 int have_align;
221
222 name = input_line_pointer;
223 c = get_symbol_end ();
224
225 /* Just after name is now '\0'. */
226 p = input_line_pointer;
227 *p = c;
228
229 SKIP_WHITESPACE ();
230
231 if (*input_line_pointer != ',')
232 {
233 as_bad (_("Expected comma after symbol-name"));
234 ignore_rest_of_line ();
235 return;
236 }
237
238 /* Skip ','. */
239 input_line_pointer++;
240
241 if ((temp = get_absolute_expression ()) < 0)
242 {
243 /* xgettext:c-format */
244 as_bad (_(".COMMon length (%d.) < 0! Ignored."), temp);
245 ignore_rest_of_line ();
246 return;
247 }
248
249 size = temp;
250 *p = 0;
251 symbolP = symbol_find_or_make (name);
252 *p = c;
253
254 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
255 {
256 as_bad (_("Ignoring attempt to re-define symbol"));
257 ignore_rest_of_line ();
258 return;
259 }
260
261 if (S_GET_VALUE (symbolP) != 0)
262 {
263 if (S_GET_VALUE (symbolP) != size)
264 {
265 /* xgettext:c-format */
266 as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."),
267 S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size);
268 }
269 }
270
271 know (symbol_get_frag (symbolP) == &zero_address_frag);
272
273 if (*input_line_pointer != ',')
274 have_align = 0;
275 else
276 {
277 have_align = 1;
278 input_line_pointer++;
279 SKIP_WHITESPACE ();
280 }
281
282 if (! have_align || *input_line_pointer != '"')
283 {
284 if (! have_align)
285 temp = 0;
286 else
287 {
288 temp = get_absolute_expression ();
289
290 if (temp < 0)
291 {
292 temp = 0;
293 as_warn (_("Common alignment negative; 0 assumed"));
294 }
295 }
296
297 if (symbol_get_obj (symbolP)->local)
298 {
299 segT old_sec;
300 int old_subsec;
301 char *pfrag;
302 int align;
303 flagword applicable;
304
305 old_sec = now_seg;
306 old_subsec = now_subseg;
307
308 applicable = bfd_applicable_section_flags (stdoutput);
309
310 applicable &= SEC_ALLOC;
311
312 switch (area)
313 {
314 case SCOMMON_SECTION:
315 do_v850_seg (SBSS_SECTION, 0);
316 break;
317
318 case ZCOMMON_SECTION:
319 do_v850_seg (ZBSS_SECTION, 0);
320 break;
321
322 case TCOMMON_SECTION:
323 do_v850_seg (TBSS_SECTION, 0);
324 break;
325 }
326
327 if (temp)
328 {
329 /* Convert to a power of 2 alignment. */
330 for (align = 0; (temp & 1) == 0; temp >>= 1, ++align)
331 ;
332
333 if (temp != 1)
334 {
335 as_bad (_("Common alignment not a power of 2"));
336 ignore_rest_of_line ();
337 return;
338 }
339 }
340 else
341 align = 0;
342
343 record_alignment (now_seg, align);
344
345 if (align)
346 frag_align (align, 0, 0);
347
348 switch (area)
349 {
350 case SCOMMON_SECTION:
351 if (S_GET_SEGMENT (symbolP) == v850_seg_table[SBSS_SECTION].s)
352 symbol_get_frag (symbolP)->fr_symbol = 0;
353 break;
354
355 case ZCOMMON_SECTION:
356 if (S_GET_SEGMENT (symbolP) == v850_seg_table[ZBSS_SECTION].s)
357 symbol_get_frag (symbolP)->fr_symbol = 0;
358 break;
359
360 case TCOMMON_SECTION:
361 if (S_GET_SEGMENT (symbolP) == v850_seg_table[TBSS_SECTION].s)
362 symbol_get_frag (symbolP)->fr_symbol = 0;
363 break;
364
365 default:
366 abort ();
367 }
368
369 symbol_set_frag (symbolP, frag_now);
370 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
371 (offsetT) size, (char *) 0);
372 *pfrag = 0;
373 S_SET_SIZE (symbolP, size);
374
375 switch (area)
376 {
377 case SCOMMON_SECTION:
378 S_SET_SEGMENT (symbolP, v850_seg_table[SBSS_SECTION].s);
379 break;
380
381 case ZCOMMON_SECTION:
382 S_SET_SEGMENT (symbolP, v850_seg_table[ZBSS_SECTION].s);
383 break;
384
385 case TCOMMON_SECTION:
386 S_SET_SEGMENT (symbolP, v850_seg_table[TBSS_SECTION].s);
387 break;
388
389 default:
390 abort ();
391 }
392
393 S_CLEAR_EXTERNAL (symbolP);
394 obj_elf_section_change_hook ();
395 subseg_set (old_sec, old_subsec);
396 }
397 else
398 {
399 segT old_sec;
400 int old_subsec;
401
402 allocate_common:
403 old_sec = now_seg;
404 old_subsec = now_subseg;
405
406 S_SET_VALUE (symbolP, (valueT) size);
407 S_SET_ALIGN (symbolP, temp);
408 S_SET_EXTERNAL (symbolP);
409
410 switch (area)
411 {
412 case SCOMMON_SECTION:
413 case ZCOMMON_SECTION:
414 case TCOMMON_SECTION:
415 do_v850_seg (area, 0);
416 S_SET_SEGMENT (symbolP, v850_seg_table[area].s);
417 break;
418
419 default:
420 abort ();
421 }
422
423 obj_elf_section_change_hook ();
424 subseg_set (old_sec, old_subsec);
425 }
426 }
427 else
428 {
429 input_line_pointer++;
430
431 /* @@ Some use the dot, some don't. Can we get some consistency?? */
432 if (*input_line_pointer == '.')
433 input_line_pointer++;
434
435 /* @@ Some say data, some say bss. */
436 if (strncmp (input_line_pointer, "bss\"", 4)
437 && strncmp (input_line_pointer, "data\"", 5))
438 {
439 while (*--input_line_pointer != '"')
440 ;
441 input_line_pointer--;
442 goto bad_common_segment;
443 }
444 while (*input_line_pointer++ != '"')
445 ;
446 goto allocate_common;
447 }
448
449 symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
450
451 demand_empty_rest_of_line ();
452 return;
453
454 {
455 bad_common_segment:
456 p = input_line_pointer;
457 while (*p && *p != '\n')
458 p++;
459 c = *p;
460 *p = '\0';
461 as_bad (_("bad .common segment %s"), input_line_pointer + 1);
462 *p = c;
463 input_line_pointer = p;
464 ignore_rest_of_line ();
465 return;
466 }
467 }
468
469 static void set_machine PARAMS ((int));
470
471 static void
472 set_machine (number)
473 int number;
474 {
475 machine = number;
476 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
477
478 switch (machine)
479 {
480 case 0: processor_mask = PROCESSOR_V850; break;
481 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
482 case bfd_mach_v850e1: processor_mask = PROCESSOR_V850E; break;
483 }
484 }
485
486 static void v850_longcode PARAMS ((int));
487
488 static void
489 v850_longcode (type)
490 int type;
491 {
492 expressionS ex;
493
494 if (! v850_relax)
495 {
496 if (type == 1)
497 as_warn (".longcall pseudo-op seen when not relaxing");
498 else
499 as_warn (".longjump pseudo-op seen when not relaxing");
500 }
501
502 expression (&ex);
503
504 if (ex.X_op != O_symbol || ex.X_add_number != 0)
505 {
506 as_bad ("bad .longcall format");
507 ignore_rest_of_line ();
508
509 return;
510 }
511
512 if (type == 1)
513 fix_new_exp (frag_now, frag_now_fix (), 4, & ex, 1,
514 BFD_RELOC_V850_LONGCALL);
515 else
516 fix_new_exp (frag_now, frag_now_fix (), 4, & ex, 1,
517 BFD_RELOC_V850_LONGJUMP);
518
519 demand_empty_rest_of_line ();
520 }
521
522 /* The target specific pseudo-ops which we support. */
523 const pseudo_typeS md_pseudo_table[] =
524 {
525 { "sdata", v850_seg, SDATA_SECTION },
526 { "tdata", v850_seg, TDATA_SECTION },
527 { "zdata", v850_seg, ZDATA_SECTION },
528 { "sbss", v850_seg, SBSS_SECTION },
529 { "tbss", v850_seg, TBSS_SECTION },
530 { "zbss", v850_seg, ZBSS_SECTION },
531 { "rosdata", v850_seg, ROSDATA_SECTION },
532 { "rozdata", v850_seg, ROZDATA_SECTION },
533 { "bss", v850_seg, BSS_SECTION },
534 { "offset", v850_offset, 0 },
535 { "word", cons, 4 },
536 { "zcomm", v850_comm, ZCOMMON_SECTION },
537 { "scomm", v850_comm, SCOMMON_SECTION },
538 { "tcomm", v850_comm, TCOMMON_SECTION },
539 { "v850", set_machine, 0 },
540 { "call_table_data", v850_seg, CALL_TABLE_DATA_SECTION },
541 { "call_table_text", v850_seg, CALL_TABLE_TEXT_SECTION },
542 { "v850e", set_machine, bfd_mach_v850e },
543 { "v850e1", set_machine, bfd_mach_v850e1 },
544 { "longcall", v850_longcode, 1 },
545 { "longjump", v850_longcode, 2 },
546 { NULL, NULL, 0 }
547 };
548
549 /* Opcode hash table. */
550 static struct hash_control *v850_hash;
551
552 /* This table is sorted. Suitable for searching by a binary search. */
553 static const struct reg_name pre_defined_registers[] =
554 {
555 { "ep", 30 }, /* ep - element ptr */
556 { "gp", 4 }, /* gp - global ptr */
557 { "hp", 2 }, /* hp - handler stack ptr */
558 { "lp", 31 }, /* lp - link ptr */
559 { "r0", 0 },
560 { "r1", 1 },
561 { "r10", 10 },
562 { "r11", 11 },
563 { "r12", 12 },
564 { "r13", 13 },
565 { "r14", 14 },
566 { "r15", 15 },
567 { "r16", 16 },
568 { "r17", 17 },
569 { "r18", 18 },
570 { "r19", 19 },
571 { "r2", 2 },
572 { "r20", 20 },
573 { "r21", 21 },
574 { "r22", 22 },
575 { "r23", 23 },
576 { "r24", 24 },
577 { "r25", 25 },
578 { "r26", 26 },
579 { "r27", 27 },
580 { "r28", 28 },
581 { "r29", 29 },
582 { "r3", 3 },
583 { "r30", 30 },
584 { "r31", 31 },
585 { "r4", 4 },
586 { "r5", 5 },
587 { "r6", 6 },
588 { "r7", 7 },
589 { "r8", 8 },
590 { "r9", 9 },
591 { "sp", 3 }, /* sp - stack ptr */
592 { "tp", 5 }, /* tp - text ptr */
593 { "zero", 0 },
594 };
595
596 #define REG_NAME_CNT \
597 (sizeof (pre_defined_registers) / sizeof (struct reg_name))
598
599 static const struct reg_name system_registers[] =
600 {
601 { "asid", 23 },
602 { "bpc", 22 },
603 { "bpav", 24 },
604 { "bpam", 25 },
605 { "bpdv", 26 },
606 { "bpdm", 27 },
607 { "ctbp", 20 },
608 { "ctpc", 16 },
609 { "ctpsw", 17 },
610 { "dbpc", 18 },
611 { "dbpsw", 19 },
612 { "dir", 21 },
613 { "ecr", 4 },
614 { "eipc", 0 },
615 { "eipsw", 1 },
616 { "fepc", 2 },
617 { "fepsw", 3 },
618 { "psw", 5 },
619 };
620
621 #define SYSREG_NAME_CNT \
622 (sizeof (system_registers) / sizeof (struct reg_name))
623
624 static const struct reg_name system_list_registers[] =
625 {
626 {"PS", 5 },
627 {"SR", 0 + 1}
628 };
629
630 #define SYSREGLIST_NAME_CNT \
631 (sizeof (system_list_registers) / sizeof (struct reg_name))
632
633 static const struct reg_name cc_names[] =
634 {
635 { "c", 0x1 },
636 { "e", 0x2 },
637 { "ge", 0xe },
638 { "gt", 0xf },
639 { "h", 0xb },
640 { "l", 0x1 },
641 { "le", 0x7 },
642 { "lt", 0x6 },
643 { "n", 0x4 },
644 { "nc", 0x9 },
645 { "ne", 0xa },
646 { "nh", 0x3 },
647 { "nl", 0x9 },
648 { "ns", 0xc },
649 { "nv", 0x8 },
650 { "nz", 0xa },
651 { "p", 0xc },
652 { "s", 0x4 },
653 { "sa", 0xd },
654 { "t", 0x5 },
655 { "v", 0x0 },
656 { "z", 0x2 },
657 };
658
659 #define CC_NAME_CNT \
660 (sizeof (cc_names) / sizeof (struct reg_name))
661
662 /* Do a binary search of the given register table to see if NAME is a
663 valid regiter name. Return the register number from the array on
664 success, or -1 on failure. */
665
666 static int reg_name_search
667 PARAMS ((const struct reg_name *, int, const char *, bfd_boolean));
668
669 static int
670 reg_name_search (regs, regcount, name, accept_numbers)
671 const struct reg_name *regs;
672 int regcount;
673 const char *name;
674 bfd_boolean accept_numbers;
675 {
676 int middle, low, high;
677 int cmp;
678 symbolS *symbolP;
679
680 /* If the register name is a symbol, then evaluate it. */
681 if ((symbolP = symbol_find (name)) != NULL)
682 {
683 /* If the symbol is an alias for another name then use that.
684 If the symbol is an alias for a number, then return the number. */
685 if (symbol_equated_p (symbolP))
686 {
687 name
688 = S_GET_NAME (symbol_get_value_expression (symbolP)->X_add_symbol);
689 }
690 else if (accept_numbers)
691 {
692 int reg = S_GET_VALUE (symbolP);
693
694 if (reg >= 0 && reg <= 31)
695 return reg;
696 }
697
698 /* Otherwise drop through and try parsing name normally. */
699 }
700
701 low = 0;
702 high = regcount - 1;
703
704 do
705 {
706 middle = (low + high) / 2;
707 cmp = strcasecmp (name, regs[middle].name);
708 if (cmp < 0)
709 high = middle - 1;
710 else if (cmp > 0)
711 low = middle + 1;
712 else
713 return regs[middle].value;
714 }
715 while (low <= high);
716 return -1;
717 }
718
719 /* Summary of register_name().
720
721 in: Input_line_pointer points to 1st char of operand.
722
723 out: An expressionS.
724 The operand may have been a register: in this case, X_op == O_register,
725 X_add_number is set to the register number, and truth is returned.
726 Input_line_pointer->(next non-blank) char after operand, or is in
727 its original state. */
728
729 static bfd_boolean register_name PARAMS ((expressionS *));
730
731 static bfd_boolean
732 register_name (expressionP)
733 expressionS *expressionP;
734 {
735 int reg_number;
736 char *name;
737 char *start;
738 char c;
739
740 /* Find the spelling of the operand. */
741 start = name = input_line_pointer;
742
743 c = get_symbol_end ();
744
745 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT,
746 name, FALSE);
747
748 /* Put back the delimiting char. */
749 *input_line_pointer = c;
750
751 /* Look to see if it's in the register table. */
752 if (reg_number >= 0)
753 {
754 expressionP->X_op = O_register;
755 expressionP->X_add_number = reg_number;
756
757 /* Make the rest nice. */
758 expressionP->X_add_symbol = NULL;
759 expressionP->X_op_symbol = NULL;
760
761 return TRUE;
762 }
763 else
764 {
765 /* Reset the line as if we had not done anything. */
766 input_line_pointer = start;
767
768 return FALSE;
769 }
770 }
771
772 /* Summary of system_register_name().
773
774 in: INPUT_LINE_POINTER points to 1st char of operand.
775 EXPRESSIONP points to an expression structure to be filled in.
776 ACCEPT_NUMBERS is true iff numerical register names may be used.
777 ACCEPT_LIST_NAMES is true iff the special names PS and SR may be
778 accepted.
779
780 out: An expressionS structure in expressionP.
781 The operand may have been a register: in this case, X_op == O_register,
782 X_add_number is set to the register number, and truth is returned.
783 Input_line_pointer->(next non-blank) char after operand, or is in
784 its original state. */
785
786 static bfd_boolean system_register_name
787 PARAMS ((expressionS *, bfd_boolean, bfd_boolean));
788
789 static bfd_boolean
790 system_register_name (expressionP, accept_numbers, accept_list_names)
791 expressionS *expressionP;
792 bfd_boolean accept_numbers;
793 bfd_boolean accept_list_names;
794 {
795 int reg_number;
796 char *name;
797 char *start;
798 char c;
799
800 /* Find the spelling of the operand. */
801 start = name = input_line_pointer;
802
803 c = get_symbol_end ();
804 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name,
805 accept_numbers);
806
807 /* Put back the delimiting char. */
808 *input_line_pointer = c;
809
810 if (reg_number < 0
811 && accept_numbers)
812 {
813 /* Reset input_line pointer. */
814 input_line_pointer = start;
815
816 if (ISDIGIT (*input_line_pointer))
817 {
818 reg_number = strtol (input_line_pointer, &input_line_pointer, 10);
819
820 /* Make sure that the register number is allowable. */
821 if (reg_number < 0
822 || (reg_number > 5 && reg_number < 16)
823 || reg_number > 27)
824 {
825 reg_number = -1;
826 }
827 }
828 else if (accept_list_names)
829 {
830 c = get_symbol_end ();
831 reg_number = reg_name_search (system_list_registers,
832 SYSREGLIST_NAME_CNT, name, FALSE);
833
834 /* Put back the delimiting char. */
835 *input_line_pointer = c;
836 }
837 }
838
839 /* Look to see if it's in the register table. */
840 if (reg_number >= 0)
841 {
842 expressionP->X_op = O_register;
843 expressionP->X_add_number = reg_number;
844
845 /* Make the rest nice. */
846 expressionP->X_add_symbol = NULL;
847 expressionP->X_op_symbol = NULL;
848
849 return TRUE;
850 }
851 else
852 {
853 /* Reset the line as if we had not done anything. */
854 input_line_pointer = start;
855
856 return FALSE;
857 }
858 }
859
860 /* Summary of cc_name().
861
862 in: INPUT_LINE_POINTER points to 1st char of operand.
863
864 out: An expressionS.
865 The operand may have been a register: in this case, X_op == O_register,
866 X_add_number is set to the register number, and truth is returned.
867 Input_line_pointer->(next non-blank) char after operand, or is in
868 its original state. */
869
870 static bfd_boolean cc_name PARAMS ((expressionS *));
871
872 static bfd_boolean
873 cc_name (expressionP)
874 expressionS *expressionP;
875 {
876 int reg_number;
877 char *name;
878 char *start;
879 char c;
880
881 /* Find the spelling of the operand. */
882 start = name = input_line_pointer;
883
884 c = get_symbol_end ();
885 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE);
886
887 /* Put back the delimiting char. */
888 *input_line_pointer = c;
889
890 /* Look to see if it's in the register table. */
891 if (reg_number >= 0)
892 {
893 expressionP->X_op = O_constant;
894 expressionP->X_add_number = reg_number;
895
896 /* Make the rest nice. */
897 expressionP->X_add_symbol = NULL;
898 expressionP->X_op_symbol = NULL;
899
900 return TRUE;
901 }
902 else
903 {
904 /* Reset the line as if we had not done anything. */
905 input_line_pointer = start;
906
907 return FALSE;
908 }
909 }
910
911 static void skip_white_space PARAMS ((void));
912
913 static void
914 skip_white_space ()
915 {
916 while (*input_line_pointer == ' '
917 || *input_line_pointer == '\t')
918 ++input_line_pointer;
919 }
920
921 /* Summary of parse_register_list ().
922
923 in: INPUT_LINE_POINTER points to 1st char of a list of registers.
924 INSN is the partially constructed instruction.
925 OPERAND is the operand being inserted.
926
927 out: NULL if the parse completed successfully, otherwise a
928 pointer to an error message is returned. If the parse
929 completes the correct bit fields in the instruction
930 will be filled in.
931
932 Parses register lists with the syntax:
933
934 { rX }
935 { rX, rY }
936 { rX - rY }
937 { rX - rY, rZ }
938 etc
939
940 and also parses constant epxressions whoes bits indicate the
941 registers in the lists. The LSB in the expression refers to
942 the lowest numbered permissable register in the register list,
943 and so on upwards. System registers are considered to be very
944 high numbers. */
945
946 static char *parse_register_list
947 PARAMS ((unsigned long *, const struct v850_operand *));
948
949 static char *
950 parse_register_list (insn, operand)
951 unsigned long *insn;
952 const struct v850_operand *operand;
953 {
954 static int type1_regs[32] = {
955 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
956 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24
957 };
958 static int type2_regs[32] = {
959 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
960 0, 0, 0, 0, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24
961 };
962 static int type3_regs[32] = {
963 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
964 0, 0, 0, 0, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8
965 };
966 int *regs;
967 expressionS exp;
968
969 /* Select a register array to parse. */
970 switch (operand->shift)
971 {
972 case 0xffe00001: regs = type1_regs; break;
973 case 0xfff8000f: regs = type2_regs; break;
974 case 0xfff8001f: regs = type3_regs; break;
975 default:
976 as_bad (_("unknown operand shift: %x\n"), operand->shift);
977 return _("internal failure in parse_register_list");
978 }
979
980 skip_white_space ();
981
982 /* If the expression starts with a curly brace it is a register list.
983 Otherwise it is a constant expression, whoes bits indicate which
984 registers are to be included in the list. */
985 if (*input_line_pointer != '{')
986 {
987 int reg;
988 int i;
989
990 expression (&exp);
991
992 if (exp.X_op != O_constant)
993 return _("constant expression or register list expected");
994
995 if (regs == type1_regs)
996 {
997 if (exp.X_add_number & 0xFFFFF000)
998 return _("high bits set in register list expression");
999
1000 for (reg = 20; reg < 32; reg++)
1001 if (exp.X_add_number & (1 << (reg - 20)))
1002 {
1003 for (i = 0; i < 32; i++)
1004 if (regs[i] == reg)
1005 *insn |= (1 << i);
1006 }
1007 }
1008 else if (regs == type2_regs)
1009 {
1010 if (exp.X_add_number & 0xFFFE0000)
1011 return _("high bits set in register list expression");
1012
1013 for (reg = 1; reg < 16; reg++)
1014 if (exp.X_add_number & (1 << (reg - 1)))
1015 {
1016 for (i = 0; i < 32; i++)
1017 if (regs[i] == reg)
1018 *insn |= (1 << i);
1019 }
1020
1021 if (exp.X_add_number & (1 << 15))
1022 *insn |= (1 << 3);
1023
1024 if (exp.X_add_number & (1 << 16))
1025 *insn |= (1 << 19);
1026 }
1027 else /* regs == type3_regs */
1028 {
1029 if (exp.X_add_number & 0xFFFE0000)
1030 return _("high bits set in register list expression");
1031
1032 for (reg = 16; reg < 32; reg++)
1033 if (exp.X_add_number & (1 << (reg - 16)))
1034 {
1035 for (i = 0; i < 32; i++)
1036 if (regs[i] == reg)
1037 *insn |= (1 << i);
1038 }
1039
1040 if (exp.X_add_number & (1 << 16))
1041 *insn |= (1 << 19);
1042 }
1043
1044 return NULL;
1045 }
1046
1047 input_line_pointer++;
1048
1049 /* Parse the register list until a terminator (closing curly brace or
1050 new-line) is found. */
1051 for (;;)
1052 {
1053 if (register_name (&exp))
1054 {
1055 int i;
1056
1057 /* Locate the given register in the list, and if it is there,
1058 insert the corresponding bit into the instruction. */
1059 for (i = 0; i < 32; i++)
1060 {
1061 if (regs[i] == exp.X_add_number)
1062 {
1063 *insn |= (1 << i);
1064 break;
1065 }
1066 }
1067
1068 if (i == 32)
1069 return _("illegal register included in list");
1070 }
1071 else if (system_register_name (&exp, TRUE, TRUE))
1072 {
1073 if (regs == type1_regs)
1074 {
1075 return _("system registers cannot be included in list");
1076 }
1077 else if (exp.X_add_number == 5)
1078 {
1079 if (regs == type2_regs)
1080 return _("PSW cannot be included in list");
1081 else
1082 *insn |= 0x8;
1083 }
1084 else if (exp.X_add_number < 4)
1085 *insn |= 0x80000;
1086 else
1087 return _("High value system registers cannot be included in list");
1088 }
1089 else if (*input_line_pointer == '}')
1090 {
1091 input_line_pointer++;
1092 break;
1093 }
1094 else if (*input_line_pointer == ',')
1095 {
1096 input_line_pointer++;
1097 continue;
1098 }
1099 else if (*input_line_pointer == '-')
1100 {
1101 /* We have encountered a range of registers: rX - rY. */
1102 int j;
1103 expressionS exp2;
1104
1105 /* Skip the dash. */
1106 ++input_line_pointer;
1107
1108 /* Get the second register in the range. */
1109 if (! register_name (&exp2))
1110 {
1111 return _("second register should follow dash in register list");
1112 exp2.X_add_number = exp.X_add_number;
1113 }
1114
1115 /* Add the rest of the registers in the range. */
1116 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
1117 {
1118 int i;
1119
1120 /* Locate the given register in the list, and if it is there,
1121 insert the corresponding bit into the instruction. */
1122 for (i = 0; i < 32; i++)
1123 {
1124 if (regs[i] == j)
1125 {
1126 *insn |= (1 << i);
1127 break;
1128 }
1129 }
1130
1131 if (i == 32)
1132 return _("illegal register included in list");
1133 }
1134 }
1135 else
1136 break;
1137
1138 skip_white_space ();
1139 }
1140
1141 return NULL;
1142 }
1143
1144 const char *md_shortopts = "m:";
1145
1146 struct option md_longopts[] = {
1147 {NULL, no_argument, NULL, 0}
1148 };
1149
1150 size_t md_longopts_size = sizeof (md_longopts);
1151
1152 void
1153 md_show_usage (stream)
1154 FILE *stream;
1155 {
1156 fprintf (stream, _(" V850 options:\n"));
1157 fprintf (stream, _(" -mwarn-signed-overflow Warn if signed immediate values overflow\n"));
1158 fprintf (stream, _(" -mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n"));
1159 fprintf (stream, _(" -mv850 The code is targeted at the v850\n"));
1160 fprintf (stream, _(" -mv850e The code is targeted at the v850e\n"));
1161 fprintf (stream, _(" -mv850e1 The code is targeted at the v850e1\n"));
1162 fprintf (stream, _(" -mv850any The code is generic, despite any processor specific instructions\n"));
1163 fprintf (stream, _(" -mrelax Enable relaxation\n"));
1164 }
1165
1166 int
1167 md_parse_option (c, arg)
1168 int c;
1169 char *arg;
1170 {
1171 if (c != 'm')
1172 {
1173 if (c != 'a')
1174 /* xgettext:c-format */
1175 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1176 return 0;
1177 }
1178
1179 if (strcmp (arg, "warn-signed-overflow") == 0)
1180 {
1181 warn_signed_overflows = TRUE;
1182 }
1183 else if (strcmp (arg, "warn-unsigned-overflow") == 0)
1184 {
1185 warn_unsigned_overflows = TRUE;
1186 }
1187 else if (strcmp (arg, "v850") == 0)
1188 {
1189 machine = 0;
1190 processor_mask = PROCESSOR_V850;
1191 }
1192 else if (strcmp (arg, "v850e") == 0)
1193 {
1194 machine = bfd_mach_v850e;
1195 processor_mask = PROCESSOR_V850E;
1196 }
1197 else if (strcmp (arg, "v850e1") == 0)
1198 {
1199 machine = bfd_mach_v850e1;
1200 processor_mask = PROCESSOR_V850E1;
1201 }
1202 else if (strcmp (arg, "v850any") == 0)
1203 {
1204 /* Tell the world that this is for any v850 chip. */
1205 machine = 0;
1206
1207 /* But support instructions for the extended versions. */
1208 processor_mask = PROCESSOR_V850E;
1209 processor_mask |= PROCESSOR_V850E1;
1210 }
1211 else if (strcmp (arg, "relax") == 0)
1212 v850_relax = 1;
1213 else
1214 {
1215 /* xgettext:c-format */
1216 fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg);
1217 return 0;
1218 }
1219
1220 return 1;
1221 }
1222
1223 symbolS *
1224 md_undefined_symbol (name)
1225 char *name ATTRIBUTE_UNUSED;
1226 {
1227 return 0;
1228 }
1229
1230 char *
1231 md_atof (type, litp, sizep)
1232 int type;
1233 char *litp;
1234 int *sizep;
1235 {
1236 int prec;
1237 LITTLENUM_TYPE words[4];
1238 char *t;
1239 int i;
1240
1241 switch (type)
1242 {
1243 case 'f':
1244 prec = 2;
1245 break;
1246
1247 case 'd':
1248 prec = 4;
1249 break;
1250
1251 default:
1252 *sizep = 0;
1253 return _("bad call to md_atof");
1254 }
1255
1256 t = atof_ieee (input_line_pointer, type, words);
1257 if (t)
1258 input_line_pointer = t;
1259
1260 *sizep = prec * 2;
1261
1262 for (i = prec - 1; i >= 0; i--)
1263 {
1264 md_number_to_chars (litp, (valueT) words[i], 2);
1265 litp += 2;
1266 }
1267
1268 return NULL;
1269 }
1270
1271 /* Very gross. */
1272
1273 void
1274 md_convert_frag (abfd, sec, fragP)
1275 bfd *abfd ATTRIBUTE_UNUSED;
1276 asection *sec;
1277 fragS *fragP;
1278 {
1279 subseg_change (sec, 0);
1280
1281 /* In range conditional or unconditional branch. */
1282 if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2)
1283 {
1284 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
1285 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
1286 fragP->fr_fix += 2;
1287 }
1288 /* Out of range conditional branch. Emit a branch around a jump. */
1289 else if (fragP->fr_subtype == 1)
1290 {
1291 unsigned char *buffer =
1292 (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
1293
1294 /* Reverse the condition of the first branch. */
1295 buffer[0] ^= 0x08;
1296 /* Mask off all the displacement bits. */
1297 buffer[0] &= 0x8f;
1298 buffer[1] &= 0x07;
1299 /* Now set the displacement bits so that we branch
1300 around the unconditional branch. */
1301 buffer[0] |= 0x30;
1302
1303 /* Now create the unconditional branch + fixup to the final
1304 target. */
1305 md_number_to_chars (buffer + 2, 0x00000780, 4);
1306 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
1307 fragP->fr_offset, 1, BFD_RELOC_UNUSED +
1308 (int) fragP->fr_opcode + 1);
1309 fragP->fr_fix += 6;
1310 }
1311 /* Out of range unconditional branch. Emit a jump. */
1312 else if (fragP->fr_subtype == 3)
1313 {
1314 md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4);
1315 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
1316 fragP->fr_offset, 1, BFD_RELOC_UNUSED +
1317 (int) fragP->fr_opcode + 1);
1318 fragP->fr_fix += 4;
1319 }
1320 else
1321 abort ();
1322 }
1323
1324 valueT
1325 md_section_align (seg, addr)
1326 asection *seg;
1327 valueT addr;
1328 {
1329 int align = bfd_get_section_alignment (stdoutput, seg);
1330 return ((addr + (1 << align) - 1) & (-1 << align));
1331 }
1332
1333 void
1334 md_begin ()
1335 {
1336 char *prev_name = "";
1337 const struct v850_opcode *op;
1338
1339 if (strncmp (TARGET_CPU, "v850e1", 6) == 0)
1340 {
1341 if (machine == -1)
1342 machine = bfd_mach_v850e1;
1343
1344 if (processor_mask == -1)
1345 processor_mask = PROCESSOR_V850E1;
1346 }
1347 else if (strncmp (TARGET_CPU, "v850e", 5) == 0)
1348 {
1349 if (machine == -1)
1350 machine = bfd_mach_v850e;
1351
1352 if (processor_mask == -1)
1353 processor_mask = PROCESSOR_V850E;
1354 }
1355 else if (strncmp (TARGET_CPU, "v850", 4) == 0)
1356 {
1357 if (machine == -1)
1358 machine = 0;
1359
1360 if (processor_mask == -1)
1361 processor_mask = PROCESSOR_V850;
1362 }
1363 else
1364 /* xgettext:c-format */
1365 as_bad (_("Unable to determine default target processor from string: %s"),
1366 TARGET_CPU);
1367
1368 v850_hash = hash_new ();
1369
1370 /* Insert unique names into hash table. The V850 instruction set
1371 has many identical opcode names that have different opcodes based
1372 on the operands. This hash table then provides a quick index to
1373 the first opcode with a particular name in the opcode table. */
1374 op = v850_opcodes;
1375 while (op->name)
1376 {
1377 if (strcmp (prev_name, op->name))
1378 {
1379 prev_name = (char *) op->name;
1380 hash_insert (v850_hash, op->name, (char *) op);
1381 }
1382 op++;
1383 }
1384
1385 v850_seg_table[BSS_SECTION].s = bss_section;
1386 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1387 }
1388
1389 static bfd_reloc_code_real_type handle_ctoff
1390 PARAMS ((const struct v850_operand *));
1391
1392 static bfd_reloc_code_real_type
1393 handle_ctoff (operand)
1394 const struct v850_operand *operand;
1395 {
1396 if (operand == NULL)
1397 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1398
1399 if (operand->bits != 6
1400 || operand->shift != 0)
1401 {
1402 as_bad (_("ctoff() relocation used on an instruction which does not support it"));
1403 return BFD_RELOC_64; /* Used to indicate an error condition. */
1404 }
1405
1406 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1407 }
1408
1409 static bfd_reloc_code_real_type handle_sdaoff
1410 PARAMS ((const struct v850_operand *));
1411
1412 static bfd_reloc_code_real_type
1413 handle_sdaoff (operand)
1414 const struct v850_operand *operand;
1415 {
1416 if (operand == NULL)
1417 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1418
1419 if (operand->bits == 15 && operand->shift == 17)
1420 return BFD_RELOC_V850_SDA_15_16_OFFSET;
1421
1422 if (operand->bits == -1)
1423 return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1424
1425 if (operand->bits != 16
1426 || operand->shift != 16)
1427 {
1428 as_bad (_("sdaoff() relocation used on an instruction which does not support it"));
1429 return BFD_RELOC_64; /* Used to indicate an error condition. */
1430 }
1431
1432 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1433 }
1434
1435 static bfd_reloc_code_real_type handle_zdaoff
1436 PARAMS ((const struct v850_operand *));
1437
1438 static bfd_reloc_code_real_type
1439 handle_zdaoff (operand)
1440 const struct v850_operand *operand;
1441 {
1442 if (operand == NULL)
1443 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1444
1445 if (operand->bits == 15 && operand->shift == 17)
1446 return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1447
1448 if (operand->bits == -1)
1449 return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1450
1451 if (operand->bits != 16
1452 || operand->shift != 16)
1453 {
1454 as_bad (_("zdaoff() relocation used on an instruction which does not support it"));
1455 /* Used to indicate an error condition. */
1456 return BFD_RELOC_64;
1457 }
1458
1459 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1460 }
1461
1462 static bfd_reloc_code_real_type handle_tdaoff
1463 PARAMS ((const struct v850_operand *));
1464
1465 static bfd_reloc_code_real_type
1466 handle_tdaoff (operand)
1467 const struct v850_operand *operand;
1468 {
1469 if (operand == NULL)
1470 /* Data item, not an instruction. */
1471 return BFD_RELOC_V850_TDA_7_7_OFFSET;
1472
1473 if (operand->bits == 6 && operand->shift == 1)
1474 /* sld.w/sst.w, operand: D8_6 */
1475 return BFD_RELOC_V850_TDA_6_8_OFFSET;
1476
1477 if (operand->bits == 4 && operand->insert != NULL)
1478 /* sld.hu, operand: D5-4 */
1479 return BFD_RELOC_V850_TDA_4_5_OFFSET;
1480
1481 if (operand->bits == 4 && operand->insert == NULL)
1482 /* sld.bu, operand: D4 */
1483 return BFD_RELOC_V850_TDA_4_4_OFFSET;
1484
1485 if (operand->bits == 16 && operand->shift == 16)
1486 /* set1 & chums, operands: D16 */
1487 return BFD_RELOC_V850_TDA_16_16_OFFSET;
1488
1489 if (operand->bits != 7)
1490 {
1491 as_bad (_("tdaoff() relocation used on an instruction which does not support it"));
1492 /* Used to indicate an error condition. */
1493 return BFD_RELOC_64;
1494 }
1495
1496 return operand->insert != NULL
1497 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1498 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1499 }
1500
1501 /* Warning: The code in this function relies upon the definitions
1502 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1503 matching the hard coded values contained herein. */
1504
1505 static bfd_reloc_code_real_type v850_reloc_prefix
1506 PARAMS ((const struct v850_operand *));
1507
1508 static bfd_reloc_code_real_type
1509 v850_reloc_prefix (operand)
1510 const struct v850_operand *operand;
1511 {
1512 bfd_boolean paren_skipped = FALSE;
1513
1514 /* Skip leading opening parenthesis. */
1515 if (*input_line_pointer == '(')
1516 {
1517 ++input_line_pointer;
1518 paren_skipped = TRUE;
1519 }
1520
1521 #define CHECK_(name, reloc) \
1522 if (strncmp (input_line_pointer, name "(", strlen (name) + 1) == 0) \
1523 { \
1524 input_line_pointer += strlen (name); \
1525 return reloc; \
1526 }
1527
1528 CHECK_ ("hi0", BFD_RELOC_HI16 );
1529 CHECK_ ("hi", BFD_RELOC_HI16_S );
1530 CHECK_ ("lo", BFD_RELOC_LO16 );
1531 CHECK_ ("sdaoff", handle_sdaoff (operand));
1532 CHECK_ ("zdaoff", handle_zdaoff (operand));
1533 CHECK_ ("tdaoff", handle_tdaoff (operand));
1534 CHECK_ ("hilo", BFD_RELOC_32 );
1535 CHECK_ ("ctoff", handle_ctoff (operand) );
1536
1537 /* Restore skipped parenthesis. */
1538 if (paren_skipped)
1539 --input_line_pointer;
1540
1541 return BFD_RELOC_UNUSED;
1542 }
1543
1544 /* Insert an operand value into an instruction. */
1545
1546 static unsigned long v850_insert_operand
1547 PARAMS ((unsigned long, const struct v850_operand *, offsetT, char *,
1548 unsigned int, char *));
1549
1550 static unsigned long
1551 v850_insert_operand (insn, operand, val, file, line, str)
1552 unsigned long insn;
1553 const struct v850_operand *operand;
1554 offsetT val;
1555 char *file;
1556 unsigned int line;
1557 char *str;
1558 {
1559 if (operand->insert)
1560 {
1561 const char *message = NULL;
1562
1563 insn = operand->insert (insn, val, &message);
1564 if (message != NULL)
1565 {
1566 if ((operand->flags & V850_OPERAND_SIGNED)
1567 && ! warn_signed_overflows
1568 && strstr (message, "out of range") != NULL)
1569 {
1570 /* Skip warning... */
1571 }
1572 else if ((operand->flags & V850_OPERAND_SIGNED) == 0
1573 && ! warn_unsigned_overflows
1574 && strstr (message, "out of range") != NULL)
1575 {
1576 /* Skip warning... */
1577 }
1578 else if (str)
1579 {
1580 if (file == (char *) NULL)
1581 as_warn ("%s: %s", str, message);
1582 else
1583 as_warn_where (file, line, "%s: %s", str, message);
1584 }
1585 else
1586 {
1587 if (file == (char *) NULL)
1588 as_warn (message);
1589 else
1590 as_warn_where (file, line, message);
1591 }
1592 }
1593 }
1594 else
1595 {
1596 if (operand->bits != 32)
1597 {
1598 long min, max;
1599
1600 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1601 {
1602 if (! warn_signed_overflows)
1603 max = (1 << operand->bits) - 1;
1604 else
1605 max = (1 << (operand->bits - 1)) - 1;
1606
1607 min = -(1 << (operand->bits - 1));
1608 }
1609 else
1610 {
1611 max = (1 << operand->bits) - 1;
1612
1613 if (! warn_unsigned_overflows)
1614 min = -(1 << (operand->bits - 1));
1615 else
1616 min = 0;
1617 }
1618
1619 if (val < (offsetT) min || val > (offsetT) max)
1620 {
1621 /* xgettext:c-format */
1622 const char *err =
1623 _("operand out of range (%s not between %ld and %ld)");
1624 char buf[100];
1625
1626 /* Restore min and mix to expected values for decimal ranges. */
1627 if ((operand->flags & V850_OPERAND_SIGNED)
1628 && ! warn_signed_overflows)
1629 max = (1 << (operand->bits - 1)) - 1;
1630
1631 if (! (operand->flags & V850_OPERAND_SIGNED)
1632 && ! warn_unsigned_overflows)
1633 min = 0;
1634
1635 if (str)
1636 {
1637 sprintf (buf, "%s: ", str);
1638
1639 sprint_value (buf + strlen (buf), val);
1640 }
1641 else
1642 sprint_value (buf, val);
1643
1644 if (file == (char *) NULL)
1645 as_warn (err, buf, min, max);
1646 else
1647 as_warn_where (file, line, err, buf, min, max);
1648 }
1649 }
1650
1651 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1652 }
1653
1654 return insn;
1655 }
1656 \f
1657 static char copy_of_instruction[128];
1658
1659 void
1660 md_assemble (str)
1661 char *str;
1662 {
1663 char *s;
1664 char *start_of_operands;
1665 struct v850_opcode *opcode;
1666 struct v850_opcode *next_opcode;
1667 const unsigned char *opindex_ptr;
1668 int next_opindex;
1669 int relaxable = 0;
1670 unsigned long insn;
1671 unsigned long insn_size;
1672 char *f;
1673 int i;
1674 int match;
1675 bfd_boolean extra_data_after_insn = FALSE;
1676 unsigned extra_data_len = 0;
1677 unsigned long extra_data = 0;
1678 char *saved_input_line_pointer;
1679
1680 strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1);
1681
1682 /* Get the opcode. */
1683 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
1684 continue;
1685
1686 if (*s != '\0')
1687 *s++ = '\0';
1688
1689 /* Find the first opcode with the proper name. */
1690 opcode = (struct v850_opcode *) hash_find (v850_hash, str);
1691 if (opcode == NULL)
1692 {
1693 /* xgettext:c-format */
1694 as_bad (_("Unrecognized opcode: `%s'"), str);
1695 ignore_rest_of_line ();
1696 return;
1697 }
1698
1699 str = s;
1700 while (ISSPACE (*str))
1701 ++str;
1702
1703 start_of_operands = str;
1704
1705 saved_input_line_pointer = input_line_pointer;
1706
1707 for (;;)
1708 {
1709 const char *errmsg = NULL;
1710
1711 match = 0;
1712
1713 if ((opcode->processors & processor_mask) == 0)
1714 {
1715 errmsg = _("Target processor does not support this instruction.");
1716 goto error;
1717 }
1718
1719 relaxable = 0;
1720 fc = 0;
1721 next_opindex = 0;
1722 insn = opcode->opcode;
1723 extra_data_after_insn = FALSE;
1724
1725 input_line_pointer = str = start_of_operands;
1726
1727 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1728 {
1729 const struct v850_operand *operand;
1730 char *hold;
1731 expressionS ex;
1732 bfd_reloc_code_real_type reloc;
1733
1734 if (next_opindex == 0)
1735 {
1736 operand = &v850_operands[*opindex_ptr];
1737 }
1738 else
1739 {
1740 operand = &v850_operands[next_opindex];
1741 next_opindex = 0;
1742 }
1743
1744 errmsg = NULL;
1745
1746 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1747 ++str;
1748
1749 if (operand->flags & V850_OPERAND_RELAX)
1750 relaxable = 1;
1751
1752 /* Gather the operand. */
1753 hold = input_line_pointer;
1754 input_line_pointer = str;
1755
1756 /* lo(), hi(), hi0(), etc... */
1757 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1758 {
1759 /* This is a fake reloc, used to indicate an error condition. */
1760 if (reloc == BFD_RELOC_64)
1761 {
1762 match = 1;
1763 goto error;
1764 }
1765
1766 expression (&ex);
1767
1768 if (ex.X_op == O_constant)
1769 {
1770 switch (reloc)
1771 {
1772 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1773 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]"
1774 and the like. */
1775 /* Fall through. */
1776
1777 case BFD_RELOC_LO16:
1778 {
1779 /* Truncate, then sign extend the value. */
1780 ex.X_add_number = SEXT16 (ex.X_add_number);
1781 break;
1782 }
1783
1784 case BFD_RELOC_HI16:
1785 {
1786 /* Truncate, then sign extend the value. */
1787 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1788 break;
1789 }
1790
1791 case BFD_RELOC_HI16_S:
1792 {
1793 /* Truncate, then sign extend the value. */
1794 int temp = (ex.X_add_number >> 16) & 0xffff;
1795
1796 temp += (ex.X_add_number >> 15) & 1;
1797
1798 ex.X_add_number = SEXT16 (temp);
1799 break;
1800 }
1801
1802 case BFD_RELOC_32:
1803 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1804 {
1805 errmsg = _("immediate operand is too large");
1806 goto error;
1807 }
1808
1809 extra_data_after_insn = TRUE;
1810 extra_data_len = 4;
1811 extra_data = 0;
1812 break;
1813
1814 default:
1815 fprintf (stderr, "reloc: %d\n", reloc);
1816 as_bad (_("AAARG -> unhandled constant reloc"));
1817 break;
1818 }
1819
1820 if (fc > MAX_INSN_FIXUPS)
1821 as_fatal (_("too many fixups"));
1822
1823 fixups[fc].exp = ex;
1824 fixups[fc].opindex = *opindex_ptr;
1825 fixups[fc].reloc = reloc;
1826 fc++;
1827 }
1828 else
1829 {
1830 if (reloc == BFD_RELOC_32)
1831 {
1832 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1833 {
1834 errmsg = _("immediate operand is too large");
1835 goto error;
1836 }
1837
1838 extra_data_after_insn = TRUE;
1839 extra_data_len = 4;
1840 extra_data = ex.X_add_number;
1841 }
1842
1843 if (fc > MAX_INSN_FIXUPS)
1844 as_fatal (_("too many fixups"));
1845
1846 fixups[fc].exp = ex;
1847 fixups[fc].opindex = *opindex_ptr;
1848 fixups[fc].reloc = reloc;
1849 fc++;
1850 }
1851 }
1852 else
1853 {
1854 errmsg = NULL;
1855
1856 if ((operand->flags & V850_OPERAND_REG) != 0)
1857 {
1858 if (!register_name (&ex))
1859 {
1860 errmsg = _("invalid register name");
1861 }
1862 else if ((operand->flags & V850_NOT_R0)
1863 && ex.X_add_number == 0)
1864 {
1865 errmsg = _("register r0 cannot be used here");
1866
1867 /* Force an error message to be generated by
1868 skipping over any following potential matches
1869 for this opcode. */
1870 opcode += 3;
1871 }
1872 }
1873 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1874 {
1875 if (!system_register_name (&ex, TRUE, FALSE))
1876 {
1877 errmsg = _("invalid system register name");
1878 }
1879 }
1880 else if ((operand->flags & V850_OPERAND_EP) != 0)
1881 {
1882 char *start = input_line_pointer;
1883 char c = get_symbol_end ();
1884
1885 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1886 {
1887 /* Put things back the way we found them. */
1888 *input_line_pointer = c;
1889 input_line_pointer = start;
1890 errmsg = _("expected EP register");
1891 goto error;
1892 }
1893
1894 *input_line_pointer = c;
1895 str = input_line_pointer;
1896 input_line_pointer = hold;
1897
1898 while (*str == ' ' || *str == ','
1899 || *str == '[' || *str == ']')
1900 ++str;
1901 continue;
1902 }
1903 else if ((operand->flags & V850_OPERAND_CC) != 0)
1904 {
1905 if (!cc_name (&ex))
1906 {
1907 errmsg = _("invalid condition code name");
1908 }
1909 }
1910 else if (operand->flags & V850E_PUSH_POP)
1911 {
1912 errmsg = parse_register_list (&insn, operand);
1913
1914 /* The parse_register_list() function has already done
1915 everything, so fake a dummy expression. */
1916 ex.X_op = O_constant;
1917 ex.X_add_number = 0;
1918 }
1919 else if (operand->flags & V850E_IMMEDIATE16)
1920 {
1921 expression (&ex);
1922
1923 if (ex.X_op != O_constant)
1924 errmsg = _("constant expression expected");
1925 else if (ex.X_add_number & 0xffff0000)
1926 {
1927 if (ex.X_add_number & 0xffff)
1928 errmsg = _("constant too big to fit into instruction");
1929 else if ((insn & 0x001fffc0) == 0x00130780)
1930 ex.X_add_number >>= 16;
1931 else
1932 errmsg = _("constant too big to fit into instruction");
1933 }
1934
1935 extra_data_after_insn = TRUE;
1936 extra_data_len = 2;
1937 extra_data = ex.X_add_number;
1938 ex.X_add_number = 0;
1939 }
1940 else if (operand->flags & V850E_IMMEDIATE32)
1941 {
1942 expression (&ex);
1943
1944 if (ex.X_op != O_constant)
1945 errmsg = _("constant expression expected");
1946
1947 extra_data_after_insn = TRUE;
1948 extra_data_len = 4;
1949 extra_data = ex.X_add_number;
1950 ex.X_add_number = 0;
1951 }
1952 else if (register_name (&ex)
1953 && (operand->flags & V850_OPERAND_REG) == 0)
1954 {
1955 char c;
1956 int exists = 0;
1957
1958 /* It is possible that an alias has been defined that
1959 matches a register name. For example the code may
1960 include a ".set ZERO, 0" directive, which matches
1961 the register name "zero". Attempt to reparse the
1962 field as an expression, and only complain if we
1963 cannot generate a constant. */
1964
1965 input_line_pointer = str;
1966
1967 c = get_symbol_end ();
1968
1969 if (symbol_find (str) != NULL)
1970 exists = 1;
1971
1972 *input_line_pointer = c;
1973 input_line_pointer = str;
1974
1975 expression (&ex);
1976
1977 if (ex.X_op != O_constant)
1978 {
1979 /* If this register is actually occuring too early on
1980 the parsing of the instruction, (because another
1981 field is missing) then report this. */
1982 if (opindex_ptr[1] != 0
1983 && (v850_operands[opindex_ptr[1]].flags
1984 & V850_OPERAND_REG))
1985 errmsg = _("syntax error: value is missing before the register name");
1986 else
1987 errmsg = _("syntax error: register not expected");
1988
1989 /* If we created a symbol in the process of this
1990 test then delete it now, so that it will not
1991 be output with the real symbols... */
1992 if (exists == 0
1993 && ex.X_op == O_symbol)
1994 symbol_remove (ex.X_add_symbol,
1995 &symbol_rootP, &symbol_lastP);
1996 }
1997 }
1998 else if (system_register_name (&ex, FALSE, FALSE)
1999 && (operand->flags & V850_OPERAND_SRG) == 0)
2000 {
2001 errmsg = _("syntax error: system register not expected");
2002 }
2003 else if (cc_name (&ex)
2004 && (operand->flags & V850_OPERAND_CC) == 0)
2005 {
2006 errmsg = _("syntax error: condition code not expected");
2007 }
2008 else
2009 {
2010 expression (&ex);
2011 /* Special case:
2012 If we are assembling a MOV instruction and the immediate
2013 value does not fit into the bits available then create a
2014 fake error so that the next MOV instruction will be
2015 selected. This one has a 32 bit immediate field. */
2016
2017 if (((insn & 0x07e0) == 0x0200)
2018 && operand->bits == 5 /* Do not match the CALLT instruction. */
2019 && ex.X_op == O_constant
2020 && (ex.X_add_number < (-(1 << (operand->bits - 1)))
2021 || ex.X_add_number > ((1 << (operand->bits - 1)) - 1)))
2022 errmsg = _("immediate operand is too large");
2023 }
2024
2025 if (errmsg)
2026 goto error;
2027
2028 #if 0
2029 fprintf (stderr,
2030 " insn: %x, operand %d, op: %d, add_number: %d\n",
2031 insn, opindex_ptr - opcode->operands,
2032 ex.X_op, ex.X_add_number);
2033 #endif
2034
2035 switch (ex.X_op)
2036 {
2037 case O_illegal:
2038 errmsg = _("illegal operand");
2039 goto error;
2040 case O_absent:
2041 errmsg = _("missing operand");
2042 goto error;
2043 case O_register:
2044 if ((operand->flags
2045 & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
2046 {
2047 errmsg = _("invalid operand");
2048 goto error;
2049 }
2050 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2051 (char *) NULL, 0,
2052 copy_of_instruction);
2053 break;
2054
2055 case O_constant:
2056 insn = v850_insert_operand (insn, operand, ex.X_add_number,
2057 (char *) NULL, 0,
2058 copy_of_instruction);
2059 break;
2060
2061 default:
2062 /* We need to generate a fixup for this expression. */
2063 if (fc >= MAX_INSN_FIXUPS)
2064 as_fatal (_("too many fixups"));
2065
2066 fixups[fc].exp = ex;
2067 fixups[fc].opindex = *opindex_ptr;
2068 fixups[fc].reloc = BFD_RELOC_UNUSED;
2069 ++fc;
2070 break;
2071 }
2072 }
2073
2074 str = input_line_pointer;
2075 input_line_pointer = hold;
2076
2077 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
2078 || *str == ')')
2079 ++str;
2080 }
2081 match = 1;
2082
2083 error:
2084 if (match == 0)
2085 {
2086 next_opcode = opcode + 1;
2087 if (next_opcode->name != NULL
2088 && strcmp (next_opcode->name, opcode->name) == 0)
2089 {
2090 opcode = next_opcode;
2091
2092 /* Skip versions that are not supported by the target
2093 processor. */
2094 if ((opcode->processors & processor_mask) == 0)
2095 goto error;
2096
2097 continue;
2098 }
2099
2100 as_bad ("%s: %s", copy_of_instruction, errmsg);
2101
2102 if (*input_line_pointer == ']')
2103 ++input_line_pointer;
2104
2105 ignore_rest_of_line ();
2106 input_line_pointer = saved_input_line_pointer;
2107 return;
2108 }
2109 break;
2110 }
2111
2112 while (ISSPACE (*str))
2113 ++str;
2114
2115 if (*str != '\0')
2116 /* xgettext:c-format */
2117 as_bad (_("junk at end of line: `%s'"), str);
2118
2119 input_line_pointer = str;
2120
2121 /* Tie dwarf2 debug info to the address at the start of the insn.
2122 We can't do this after the insn has been output as the current
2123 frag may have been closed off. eg. by frag_var. */
2124 dwarf2_emit_insn (0);
2125
2126 /* Write out the instruction. */
2127
2128 if (relaxable && fc > 0)
2129 {
2130 insn_size = 2;
2131 fc = 0;
2132
2133 if (!strcmp (opcode->name, "br"))
2134 {
2135 f = frag_var (rs_machine_dependent, 4, 2, 2,
2136 fixups[0].exp.X_add_symbol,
2137 fixups[0].exp.X_add_number,
2138 (char *) fixups[0].opindex);
2139 md_number_to_chars (f, insn, insn_size);
2140 md_number_to_chars (f + 2, 0, 2);
2141 }
2142 else
2143 {
2144 f = frag_var (rs_machine_dependent, 6, 4, 0,
2145 fixups[0].exp.X_add_symbol,
2146 fixups[0].exp.X_add_number,
2147 (char *) fixups[0].opindex);
2148 md_number_to_chars (f, insn, insn_size);
2149 md_number_to_chars (f + 2, 0, 4);
2150 }
2151 }
2152 else
2153 {
2154 /* Four byte insns have an opcode with the two high bits on. */
2155 if ((insn & 0x0600) == 0x0600)
2156 insn_size = 4;
2157 else
2158 insn_size = 2;
2159
2160 /* Special case: 32 bit MOV. */
2161 if ((insn & 0xffe0) == 0x0620)
2162 insn_size = 2;
2163
2164 f = frag_more (insn_size);
2165 md_number_to_chars (f, insn, insn_size);
2166
2167 if (extra_data_after_insn)
2168 {
2169 f = frag_more (extra_data_len);
2170 md_number_to_chars (f, extra_data, extra_data_len);
2171
2172 extra_data_after_insn = FALSE;
2173 }
2174 }
2175
2176 /* Create any fixups. At this point we do not use a
2177 bfd_reloc_code_real_type, but instead just use the
2178 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2179 handle fixups for any operand type, although that is admittedly
2180 not a very exciting feature. We pick a BFD reloc type in
2181 md_apply_fix3. */
2182 for (i = 0; i < fc; i++)
2183 {
2184 const struct v850_operand *operand;
2185 bfd_reloc_code_real_type reloc;
2186
2187 operand = &v850_operands[fixups[i].opindex];
2188
2189 reloc = fixups[i].reloc;
2190
2191 if (reloc != BFD_RELOC_UNUSED)
2192 {
2193 reloc_howto_type *reloc_howto =
2194 bfd_reloc_type_lookup (stdoutput, reloc);
2195 int size;
2196 int address;
2197 fixS *fixP;
2198
2199 if (!reloc_howto)
2200 abort ();
2201
2202 size = bfd_get_reloc_size (reloc_howto);
2203
2204 /* XXX This will abort on an R_V850_8 reloc -
2205 is this reloc actually used? */
2206 if (size != 2 && size != 4)
2207 abort ();
2208
2209 address = (f - frag_now->fr_literal) + insn_size - size;
2210
2211 if (reloc == BFD_RELOC_32)
2212 address += 2;
2213
2214 fixP = fix_new_exp (frag_now, address, size,
2215 &fixups[i].exp,
2216 reloc_howto->pc_relative,
2217 reloc);
2218
2219 switch (reloc)
2220 {
2221 case BFD_RELOC_LO16:
2222 case BFD_RELOC_HI16:
2223 case BFD_RELOC_HI16_S:
2224 fixP->fx_no_overflow = 1;
2225 break;
2226 default:
2227 break;
2228 }
2229 }
2230 else
2231 {
2232 fix_new_exp (frag_now,
2233 f - frag_now->fr_literal, 4,
2234 & fixups[i].exp,
2235 (operand->flags & V850_OPERAND_DISP) != 0,
2236 (bfd_reloc_code_real_type) (fixups[i].opindex
2237 + (int) BFD_RELOC_UNUSED));
2238 }
2239 }
2240
2241 input_line_pointer = saved_input_line_pointer;
2242 }
2243
2244 /* If while processing a fixup, a reloc really needs to be created
2245 then it is done here. */
2246
2247 arelent *
2248 tc_gen_reloc (seg, fixp)
2249 asection *seg ATTRIBUTE_UNUSED;
2250 fixS *fixp;
2251 {
2252 arelent *reloc;
2253
2254 reloc = (arelent *) xmalloc (sizeof (arelent));
2255 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2256 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
2257 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2258
2259 if ( fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY
2260 || fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
2261 || fixp->fx_r_type == BFD_RELOC_V850_LONGCALL
2262 || fixp->fx_r_type == BFD_RELOC_V850_LONGJUMP
2263 || fixp->fx_r_type == BFD_RELOC_V850_ALIGN)
2264 reloc->addend = fixp->fx_offset;
2265 else
2266 {
2267 if (fixp->fx_r_type == BFD_RELOC_32
2268 && fixp->fx_pcrel)
2269 fixp->fx_r_type = BFD_RELOC_32_PCREL;
2270
2271 reloc->addend = fixp->fx_addnumber;
2272 }
2273
2274 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
2275
2276 if (reloc->howto == (reloc_howto_type *) NULL)
2277 {
2278 as_bad_where (fixp->fx_file, fixp->fx_line,
2279 /* xgettext:c-format */
2280 _("reloc %d not supported by object file format"),
2281 (int) fixp->fx_r_type);
2282
2283 xfree (reloc);
2284
2285 return NULL;
2286 }
2287
2288 return reloc;
2289 }
2290
2291 void
2292 v850_handle_align (frag)
2293 fragS * frag;
2294 {
2295 if (v850_relax
2296 && frag->fr_type == rs_align
2297 && frag->fr_address + frag->fr_fix > 0
2298 && frag->fr_offset > 1
2299 && now_seg != bss_section
2300 && now_seg != v850_seg_table[SBSS_SECTION].s
2301 && now_seg != v850_seg_table[TBSS_SECTION].s
2302 && now_seg != v850_seg_table[ZBSS_SECTION].s)
2303 fix_new (frag, frag->fr_fix, 2, & abs_symbol, frag->fr_offset, 0,
2304 BFD_RELOC_V850_ALIGN);
2305 }
2306
2307 /* Return current size of variable part of frag. */
2308
2309 int
2310 md_estimate_size_before_relax (fragp, seg)
2311 fragS *fragp;
2312 asection *seg ATTRIBUTE_UNUSED;
2313 {
2314 if (fragp->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0]))
2315 abort ();
2316
2317 return md_relax_table[fragp->fr_subtype].rlx_length;
2318 }
2319
2320 long
2321 v850_pcrel_from_section (fixp, section)
2322 fixS *fixp;
2323 segT section;
2324 {
2325 /* If the symbol is undefined, or in a section other than our own,
2326 or it is weak (in which case it may well be in another section,
2327 then let the linker figure it out. */
2328 if (fixp->fx_addsy != (symbolS *) NULL
2329 && (! S_IS_DEFINED (fixp->fx_addsy)
2330 || S_IS_WEAK (fixp->fx_addsy)
2331 || (S_GET_SEGMENT (fixp->fx_addsy) != section)))
2332 return 0;
2333
2334 return fixp->fx_frag->fr_address + fixp->fx_where;
2335 }
2336
2337 void
2338 md_apply_fix3 (fixP, valueP, seg)
2339 fixS *fixP;
2340 valueT *valueP;
2341 segT seg ATTRIBUTE_UNUSED;
2342 {
2343 valueT value = * valueP;
2344 char *where;
2345
2346 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
2347 || fixP->fx_r_type == BFD_RELOC_V850_LONGCALL
2348 || fixP->fx_r_type == BFD_RELOC_V850_LONGJUMP
2349 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
2350 {
2351 fixP->fx_done = 0;
2352 return;
2353 }
2354
2355 if (fixP->fx_addsy == (symbolS *) NULL)
2356 fixP->fx_addnumber = value,
2357 fixP->fx_done = 1;
2358
2359 else if (fixP->fx_pcrel)
2360 fixP->fx_addnumber = fixP->fx_offset;
2361
2362 else
2363 {
2364 value = fixP->fx_offset;
2365 if (fixP->fx_subsy != (symbolS *) NULL)
2366 {
2367 if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section)
2368 value -= S_GET_VALUE (fixP->fx_subsy);
2369 else
2370 {
2371 /* We don't actually support subtracting a symbol. */
2372 as_bad_where (fixP->fx_file, fixP->fx_line,
2373 _("expression too complex"));
2374 }
2375 }
2376 fixP->fx_addnumber = value;
2377 }
2378
2379 if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
2380 {
2381 int opindex;
2382 const struct v850_operand *operand;
2383 unsigned long insn;
2384
2385 opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
2386 operand = &v850_operands[opindex];
2387
2388 /* Fetch the instruction, insert the fully resolved operand
2389 value, and stuff the instruction back again.
2390
2391 Note the instruction has been stored in little endian
2392 format! */
2393 where = fixP->fx_frag->fr_literal + fixP->fx_where;
2394
2395 insn = bfd_getl32 ((unsigned char *) where);
2396 insn = v850_insert_operand (insn, operand, (offsetT) value,
2397 fixP->fx_file, fixP->fx_line, NULL);
2398 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
2399
2400 if (fixP->fx_done)
2401 /* Nothing else to do here. */
2402 return;
2403
2404 /* Determine a BFD reloc value based on the operand information.
2405 We are only prepared to turn a few of the operands into relocs. */
2406
2407 if (operand->bits == 22)
2408 fixP->fx_r_type = BFD_RELOC_V850_22_PCREL;
2409 else if (operand->bits == 9)
2410 fixP->fx_r_type = BFD_RELOC_V850_9_PCREL;
2411 else
2412 {
2413 #if 0
2414 fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn);
2415 #endif
2416
2417 as_bad_where (fixP->fx_file, fixP->fx_line,
2418 _("unresolved expression that must be resolved"));
2419 fixP->fx_done = 1;
2420 return;
2421 }
2422 }
2423 else if (fixP->fx_done)
2424 {
2425 /* We still have to insert the value into memory! */
2426 where = fixP->fx_frag->fr_literal + fixP->fx_where;
2427
2428 if (fixP->fx_size == 1)
2429 *where = value & 0xff;
2430 else if (fixP->fx_size == 2)
2431 bfd_putl16 (value & 0xffff, (unsigned char *) where);
2432 else if (fixP->fx_size == 4)
2433 bfd_putl32 (value, (unsigned char *) where);
2434 }
2435 }
2436 \f
2437 /* Parse a cons expression. We have to handle hi(), lo(), etc
2438 on the v850. */
2439
2440 void
2441 parse_cons_expression_v850 (exp)
2442 expressionS *exp;
2443 {
2444 /* See if there's a reloc prefix like hi() we have to handle. */
2445 hold_cons_reloc = v850_reloc_prefix (NULL);
2446
2447 /* Do normal expression parsing. */
2448 expression (exp);
2449 }
2450
2451 /* Create a fixup for a cons expression. If parse_cons_expression_v850
2452 found a reloc prefix, then we use that reloc, else we choose an
2453 appropriate one based on the size of the expression. */
2454
2455 void
2456 cons_fix_new_v850 (frag, where, size, exp)
2457 fragS *frag;
2458 int where;
2459 int size;
2460 expressionS *exp;
2461 {
2462 if (hold_cons_reloc == BFD_RELOC_UNUSED)
2463 {
2464 if (size == 4)
2465 hold_cons_reloc = BFD_RELOC_32;
2466 if (size == 2)
2467 hold_cons_reloc = BFD_RELOC_16;
2468 if (size == 1)
2469 hold_cons_reloc = BFD_RELOC_8;
2470 }
2471
2472 if (exp != NULL)
2473 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
2474 else
2475 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
2476
2477 hold_cons_reloc = BFD_RELOC_UNUSED;
2478 }
2479
2480 bfd_boolean
2481 v850_fix_adjustable (fixP)
2482 fixS *fixP;
2483 {
2484 if (fixP->fx_addsy == NULL)
2485 return 1;
2486
2487 /* Don't adjust function names. */
2488 if (S_IS_FUNCTION (fixP->fx_addsy))
2489 return 0;
2490
2491 /* We need the symbol name for the VTABLE entries. */
2492 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
2493 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
2494 return 0;
2495
2496 return 1;
2497 }
2498
2499 int
2500 v850_force_relocation (fixP)
2501 struct fix *fixP;
2502 {
2503 if (fixP->fx_r_type == BFD_RELOC_V850_LONGCALL
2504 || fixP->fx_r_type == BFD_RELOC_V850_LONGJUMP)
2505 return 1;
2506
2507 if (v850_relax
2508 && (fixP->fx_pcrel
2509 || fixP->fx_r_type == BFD_RELOC_V850_ALIGN
2510 || fixP->fx_r_type == BFD_RELOC_V850_22_PCREL
2511 || fixP->fx_r_type == BFD_RELOC_V850_9_PCREL
2512 || fixP->fx_r_type >= BFD_RELOC_UNUSED))
2513 return 1;
2514
2515 return generic_force_reloc (fixP);
2516 }
GDB Binutils - Deliverables
This page took 0.081667 seconds and 4 git commands to generate.