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Oops - fixed typos in previous delta.
[deliverable/binutils-gdb.git] / gas / config / tc-v850.c
1 /* tc-v850.c -- Assembler code for the NEC V850
2 Copyright (C) 1996, 1997 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 /* sign-extend a 16-bit number */
28 #define SEXT16(x) ((((x) & 0xffff) ^ (~ 0x7fff)) + 0x8000)
29
30 /* Temporarily holds the reloc in a cons expression. */
31 static bfd_reloc_code_real_type hold_cons_reloc;
32
33 /* Set to TRUE if we want to be pedantic about signed overflows. */
34 static boolean warn_signed_overflows = FALSE;
35 static boolean warn_unsigned_overflows = FALSE;
36
37 /* Indicates the target BFD machine number. */
38 static int machine = TARGET_MACHINE;
39
40 /* Indicates the target processor(s) for the assemble. */
41 static unsigned int processor_mask = TARGET_PROCESSOR;
42
43 \f
44 /* Structure to hold information about predefined registers. */
45 struct reg_name
46 {
47 const char * name;
48 int value;
49 };
50
51 /* Generic assembler global variables which must be defined by all targets. */
52
53 /* Characters which always start a comment. */
54 const char comment_chars[] = "#";
55
56 /* Characters which start a comment at the beginning of a line. */
57 const char line_comment_chars[] = ";#";
58
59 /* Characters which may be used to separate multiple commands on a
60 single line. */
61 const char line_separator_chars[] = ";";
62
63 /* Characters which are used to indicate an exponent in a floating
64 point number. */
65 const char EXP_CHARS[] = "eE";
66
67 /* Characters which mean that a number is a floating point constant,
68 as in 0d1.0. */
69 const char FLT_CHARS[] = "dD";
70 \f
71
72 const relax_typeS md_relax_table[] = {
73 {0xff, -0x100, 2, 1},
74 {0x1fffff, -0x200000, 6, 0},
75 };
76
77
78 static segT sdata_section = NULL;
79 static segT tdata_section = NULL;
80 static segT zdata_section = NULL;
81 static segT sbss_section = NULL;
82 static segT tbss_section = NULL;
83 static segT zbss_section = NULL;
84 static segT rosdata_section = NULL;
85 static segT rozdata_section = NULL;
86 /* start-sanitize-v850e */
87 static segT call_table_data_section = NULL;
88 static segT call_table_text_section = NULL;
89 /* end-sanitize-v850e */
90
91
92 /* local functions */
93 static unsigned long v850_insert_operand
94 PARAMS ((unsigned long insn, const struct v850_operand *operand,
95 offsetT val, char *file, unsigned int line));
96
97
98 /* fixups */
99 #define MAX_INSN_FIXUPS (5)
100 struct v850_fixup
101 {
102 expressionS exp;
103 int opindex;
104 bfd_reloc_code_real_type reloc;
105 };
106 struct v850_fixup fixups[MAX_INSN_FIXUPS];
107 static int fc;
108 \f
109 void
110 v850_sdata (int ignore)
111 {
112 subseg_set (sdata_section, (subsegT) get_absolute_expression ());
113
114 demand_empty_rest_of_line ();
115 }
116
117 void
118 v850_tdata (int ignore)
119 {
120 subseg_set (tdata_section, (subsegT) get_absolute_expression ());
121
122 demand_empty_rest_of_line ();
123 }
124
125 void
126 v850_zdata (int ignore)
127 {
128 subseg_set (zdata_section, (subsegT) get_absolute_expression ());
129
130 demand_empty_rest_of_line ();
131 }
132
133 void
134 v850_sbss (int ignore)
135 {
136 subseg_set (sbss_section, (subsegT) get_absolute_expression ());
137
138 demand_empty_rest_of_line ();
139 }
140
141 void
142 v850_tbss (int ignore)
143 {
144 subseg_set (tbss_section, (subsegT) get_absolute_expression ());
145
146 demand_empty_rest_of_line ();
147 }
148
149 void
150 v850_zbss (int ignore)
151 {
152 subseg_set (zbss_section, (subsegT) get_absolute_expression ());
153
154 demand_empty_rest_of_line ();
155 }
156
157 void
158 v850_rosdata (int ignore)
159 {
160 subseg_set (rosdata_section, (subsegT) get_absolute_expression ());
161
162 demand_empty_rest_of_line ();
163 }
164
165 void
166 v850_rozdata (int ignore)
167 {
168 subseg_set (rozdata_section, (subsegT) get_absolute_expression ());
169
170 demand_empty_rest_of_line ();
171 }
172
173 /* start-sanitize-v850e */
174 void
175 v850_call_table_data (int ignore)
176 {
177 subseg_set (call_table_data_section, (subsegT) get_absolute_expression ());
178
179 demand_empty_rest_of_line ();
180 }
181
182 void
183 v850_call_table_text (int ignore)
184 {
185 subseg_set (call_table_text_section, (subsegT) get_absolute_expression ());
186
187 demand_empty_rest_of_line ();
188 }
189 /* end-sanitize-v850e */
190
191 static void
192 v850_section (int arg)
193 {
194 char saved_c;
195 char * ptr;
196
197 for (ptr = input_line_pointer; * ptr != '\n' && * ptr != 0; ptr ++)
198 if (* ptr == ',' && ptr[1] == '.')
199 break;
200
201 saved_c = * ptr;
202 * ptr = ';';
203
204 obj_elf_section (arg);
205
206 * ptr = saved_c;
207 }
208
209 void
210 v850_bss (int ignore)
211 {
212 register int temp = get_absolute_expression ();
213
214 obj_elf_section_change_hook();
215
216 subseg_set (bss_section, (subsegT) temp);
217
218 demand_empty_rest_of_line ();
219 }
220
221 void
222 v850_offset (int ignore)
223 {
224 int temp = get_absolute_expression ();
225
226 temp -= frag_now_fix();
227
228 if (temp > 0)
229 (void) frag_more (temp);
230
231 demand_empty_rest_of_line ();
232 }
233
234 void
235 set_machine (int number)
236 {
237 machine = number;
238 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
239
240 switch (machine)
241 {
242 case 0: processor_mask = PROCESSOR_V850; break;
243 /* start-sanitize-v850e */
244 case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break;
245 /* end-sanitize-v850e */
246 /* start-sanitize-v850eq */
247 case bfd_mach_v850eq: processor_mask = PROCESSOR_V850EQ; break;
248 /* end-sanitize-v850eq */
249 }
250 }
251
252 /* The target specific pseudo-ops which we support. */
253 const pseudo_typeS md_pseudo_table[] =
254 {
255 {"sdata", v850_sdata, 0},
256 {"tdata", v850_tdata, 0},
257 {"zdata", v850_zdata, 0},
258 {"sbss", v850_sbss, 0},
259 {"tbss", v850_tbss, 0},
260 {"zbss", v850_zbss, 0},
261 {"rosdata", v850_rosdata, 0},
262 {"rozdata", v850_rozdata, 0},
263 {"bss", v850_bss, 0},
264 {"offset", v850_offset, 0},
265 {"section", v850_section, 0},
266 {"word", cons, 4},
267 {"v850", set_machine, 0},
268 /* start-sanitize-v850e */
269 {"call_table_data", v850_call_table_data, 0},
270 {"call_table_text", v850_call_table_text, 0},
271 {"v850e", set_machine, bfd_mach_v850e},
272 /* end-sanitize-v850e */
273 /* start-sanitize-v850eq */
274 {"v850eq", set_machine, bfd_mach_v850eq},
275 /* end-sanitize-v850eq */
276 { NULL, NULL, 0}
277 };
278
279 /* Opcode hash table. */
280 static struct hash_control *v850_hash;
281
282 /* This table is sorted. Suitable for searching by a binary search. */
283 static const struct reg_name pre_defined_registers[] =
284 {
285 { "ep", 30 }, /* ep - element ptr */
286 { "gp", 4 }, /* gp - global ptr */
287 { "hp", 2 }, /* hp - handler stack ptr */
288 { "lp", 31 }, /* lp - link ptr */
289 { "r0", 0 },
290 { "r1", 1 },
291 { "r10", 10 },
292 { "r11", 11 },
293 { "r12", 12 },
294 { "r13", 13 },
295 { "r14", 14 },
296 { "r15", 15 },
297 { "r16", 16 },
298 { "r17", 17 },
299 { "r18", 18 },
300 { "r19", 19 },
301 { "r2", 2 },
302 { "r20", 20 },
303 { "r21", 21 },
304 { "r22", 22 },
305 { "r23", 23 },
306 { "r24", 24 },
307 { "r25", 25 },
308 { "r26", 26 },
309 { "r27", 27 },
310 { "r28", 28 },
311 { "r29", 29 },
312 { "r3", 3 },
313 { "r30", 30 },
314 { "r31", 31 },
315 { "r4", 4 },
316 { "r5", 5 },
317 { "r6", 6 },
318 { "r7", 7 },
319 { "r8", 8 },
320 { "r9", 9 },
321 { "sp", 3 }, /* sp - stack ptr */
322 { "tp", 5 }, /* tp - text ptr */
323 { "zero", 0 },
324 };
325 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct reg_name))
326
327
328 static const struct reg_name system_registers[] =
329 {
330 /* start-sanitize-v850e */
331 { "ctbp", 20 },
332 { "ctpc", 16 },
333 { "ctpsw", 17 },
334 { "dbpc", 18 },
335 { "dbpsw", 19 },
336 /* end-sanitize-v850e */
337 { "ecr", 4 },
338 { "eipc", 0 },
339 { "eipsw", 1 },
340 { "fepc", 2 },
341 { "fepsw", 3 },
342 { "psw", 5 },
343 };
344 #define SYSREG_NAME_CNT (sizeof (system_registers) / sizeof (struct reg_name))
345
346 static const struct reg_name cc_names[] =
347 {
348 { "c", 0x1 },
349 { "e", 0x2 },
350 { "ge", 0xe },
351 { "gt", 0xf },
352 { "h", 0xb },
353 { "l", 0x1 },
354 { "le", 0x7 },
355 { "lt", 0x6 },
356 { "n", 0x4 },
357 { "nc", 0x9 },
358 { "ne", 0xa },
359 { "nh", 0x3 },
360 { "nl", 0x9 },
361 { "ns", 0xc },
362 { "nv", 0x8 },
363 { "nz", 0xa },
364 { "p", 0xc },
365 { "s", 0x4 },
366 { "sa", 0xd },
367 { "t", 0x5 },
368 { "v", 0x0 },
369 { "z", 0x2 },
370 };
371 #define CC_NAME_CNT (sizeof (cc_names) / sizeof (struct reg_name))
372
373 /* reg_name_search does a binary search of the given register table
374 to see if "name" is a valid regiter name. Returns the register
375 number from the array on success, or -1 on failure. */
376
377 static int
378 reg_name_search (regs, regcount, name)
379 const struct reg_name * regs;
380 int regcount;
381 const char * name;
382 {
383 int middle, low, high;
384 int cmp;
385
386 low = 0;
387 high = regcount - 1;
388
389 do
390 {
391 middle = (low + high) / 2;
392 cmp = strcasecmp (name, regs[middle].name);
393 if (cmp < 0)
394 high = middle - 1;
395 else if (cmp > 0)
396 low = middle + 1;
397 else
398 return regs[middle].value;
399 }
400 while (low <= high);
401 return -1;
402 }
403
404
405 /* Summary of register_name().
406 *
407 * in: Input_line_pointer points to 1st char of operand.
408 *
409 * out: A expressionS.
410 * The operand may have been a register: in this case, X_op == O_register,
411 * X_add_number is set to the register number, and truth is returned.
412 * Input_line_pointer->(next non-blank) char after operand, or is in
413 * its original state.
414 */
415 static boolean
416 register_name (expressionP)
417 expressionS * expressionP;
418 {
419 int reg_number;
420 char * name;
421 char * start;
422 char c;
423
424 /* Find the spelling of the operand */
425 start = name = input_line_pointer;
426
427 c = get_symbol_end ();
428
429 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
430
431 * input_line_pointer = c; /* put back the delimiting char */
432
433 /* look to see if it's in the register table */
434 if (reg_number >= 0)
435 {
436 expressionP->X_op = O_register;
437 expressionP->X_add_number = reg_number;
438
439 /* make the rest nice */
440 expressionP->X_add_symbol = NULL;
441 expressionP->X_op_symbol = NULL;
442
443 return true;
444 }
445 else
446 {
447 /* reset the line as if we had not done anything */
448 input_line_pointer = start;
449
450 return false;
451 }
452 }
453
454 /* Summary of system_register_name().
455 *
456 * in: Input_line_pointer points to 1st char of operand.
457 *
458 * out: A expressionS.
459 * The operand may have been a register: in this case, X_op == O_register,
460 * X_add_number is set to the register number, and truth is returned.
461 * Input_line_pointer->(next non-blank) char after operand, or is in
462 * its original state.
463 */
464 static boolean
465 system_register_name (expressionP, accept_numbers)
466 expressionS * expressionP;
467 boolean accept_numbers;
468 {
469 int reg_number;
470 char * name;
471 char * start;
472 char c;
473
474 /* Find the spelling of the operand */
475 start = name = input_line_pointer;
476
477 c = get_symbol_end ();
478 reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name);
479
480 * input_line_pointer = c; /* put back the delimiting char */
481
482 if (reg_number < 0
483 && accept_numbers)
484 {
485 input_line_pointer = start; /* reset input_line pointer */
486
487 if (isdigit (* input_line_pointer))
488 reg_number = strtol (input_line_pointer, & input_line_pointer, 10);
489
490 /* Make sure that the register number is allowable. */
491 if ( reg_number < 0
492 || reg_number > 5
493 /* start-sanitize-v850e */
494 && reg_number < 16
495 || reg_number > 20
496 /* end-sanitize-v850e */
497 )
498 {
499 reg_number = -1;
500 }
501 }
502
503 /* look to see if it's in the register table */
504 if (reg_number >= 0)
505 {
506 expressionP->X_op = O_register;
507 expressionP->X_add_number = reg_number;
508
509 /* make the rest nice */
510 expressionP->X_add_symbol = NULL;
511 expressionP->X_op_symbol = NULL;
512
513 return true;
514 }
515 else
516 {
517 /* reset the line as if we had not done anything */
518 input_line_pointer = start;
519
520 return false;
521 }
522 }
523
524 /* Summary of cc_name().
525 *
526 * in: Input_line_pointer points to 1st char of operand.
527 *
528 * out: A expressionS.
529 * The operand may have been a register: in this case, X_op == O_register,
530 * X_add_number is set to the register number, and truth is returned.
531 * Input_line_pointer->(next non-blank) char after operand, or is in
532 * its original state.
533 */
534 static boolean
535 cc_name (expressionP)
536 expressionS * expressionP;
537 {
538 int reg_number;
539 char * name;
540 char * start;
541 char c;
542
543 /* Find the spelling of the operand */
544 start = name = input_line_pointer;
545
546 c = get_symbol_end ();
547 reg_number = reg_name_search (cc_names, CC_NAME_CNT, name);
548
549 * input_line_pointer = c; /* put back the delimiting char */
550
551 /* look to see if it's in the register table */
552 if (reg_number >= 0)
553 {
554 expressionP->X_op = O_constant;
555 expressionP->X_add_number = reg_number;
556
557 /* make the rest nice */
558 expressionP->X_add_symbol = NULL;
559 expressionP->X_op_symbol = NULL;
560
561 return true;
562 }
563 else
564 {
565 /* reset the line as if we had not done anything */
566 input_line_pointer = start;
567
568 return false;
569 }
570 }
571
572 static void
573 skip_white_space (void)
574 {
575 while ( * input_line_pointer == ' '
576 || * input_line_pointer == '\t')
577 ++ input_line_pointer;
578 }
579
580 /* start-sanitize-v850e */
581 /* Summary of parse_register_list ().
582 *
583 * in: Input_line_pointer points to 1st char of a list of registers.
584 * insn is the partially constructed instruction.
585 * operand is the operand being inserted.
586 *
587 * out: True if the parse completed successfully, False otherwise.
588 * If the parse completes the correct bit fields in the
589 * instruction will be filled in.
590 *
591 * Parses register lists with the syntax:
592 *
593 * { rX }
594 * { rX, rY }
595 * { rX - rY }
596 * { rX - rY, rZ }
597 * etc
598 *
599 * and also parses constant epxressions whoes bits indicate the
600 * registers in the lists. The LSB in the expression refers to
601 * the lowest numbered permissable register in the register list,
602 * and so on upwards. System registers are considered to be very
603 * high numbers.
604 *
605 */
606 static char *
607 parse_register_list
608 (
609 unsigned long * insn,
610 const struct v850_operand * operand
611 )
612 {
613 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 };
614 /* start-sanitize-v850eq */
615 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 };
616 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 };
617 /* end-sanitize-v850eq */
618 int * regs;
619 expressionS exp;
620
621
622 /* Select a register array to parse. */
623 switch (operand->shift)
624 {
625 case 0xffe00001: regs = type1_regs; break;
626 /* start-sanitize-v850eq */
627 case 0xfff8000f: regs = type2_regs; break;
628 case 0xfff8001f: regs = type3_regs; break;
629 /* end-sanitize-v850eq */
630 default:
631 as_bad ("unknown operand shift: %x\n", operand->shift );
632 return "internal failure in parse_register_list";
633 }
634
635 skip_white_space();
636
637 /* If the expression starts with a curly brace it is a register list.
638 Otherwise it is a constant expression ,whoes bits indicate which
639 registers are to be included in the list. */
640
641 if (* input_line_pointer != '{')
642 {
643 int bits;
644 int reg;
645 int i;
646
647 expression (& exp);
648
649 if (exp.X_op != O_constant)
650 return "constant expression or register list expected";
651
652 /* start-sanitize-v850eq */
653 if (regs == type1_regs)
654 /* end-sanitize-v850eq */
655 {
656 if (exp.X_add_number & 0xFFFFF000)
657 return "high bits set in register list expression";
658
659 for (reg = 20; reg < 32; reg ++)
660 if (exp.X_add_number & (1 << (reg - 20)))
661 {
662 for (i = 0; i < 32; i++)
663 if (regs[i] == reg)
664 * insn |= (1 << i);
665 }
666 }
667 /* start-sanitize-v850eq */
668 else if (regs == type2_regs)
669 {
670 if (exp.X_add_number & 0xFFFE0000)
671 return "high bits set in register list expression";
672
673 for (reg = 1; reg < 16; reg ++)
674 if (exp.X_add_number & (1 << (reg - 1)))
675 {
676 for (i = 0; i < 32; i++)
677 if (regs[i] == reg)
678 * insn |= (1 << i);
679 }
680
681 if (exp.X_add_number & (1 << 15))
682 * insn |= (1 << 3);
683
684 if (exp.X_add_number & (1 << 16))
685 * insn |= (1 << 19);
686 }
687 else /* regs == type3_regs */
688 {
689 if (exp.X_add_number & 0xFFFE0000)
690 return "high bits set in register list expression";
691
692 for (reg = 16; reg < 32; reg ++)
693 if (exp.X_add_number & (1 << (reg - 16)))
694 {
695 for (i = 0; i < 32; i++)
696 if (regs[i] == reg)
697 * insn |= (1 << i);
698 }
699
700 if (exp.X_add_number & (1 << 16))
701 * insn |= (1 << 19);
702 }
703 /* end-sanitize-v850eq */
704
705 return NULL;
706 }
707
708 input_line_pointer ++;
709
710 /* Parse the register list until a terminator (closing curly brace or new-line) is found. */
711 for (;;)
712 {
713 if (register_name (& exp))
714 {
715 int i;
716
717 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
718 for (i = 0; i < 32; i++)
719 {
720 if (regs[ i ] == exp.X_add_number)
721 {
722 * insn |= (1 << i);
723 break;
724 }
725 }
726
727 if (i == 32)
728 {
729 return "illegal register included in list";
730 }
731 }
732 else if (system_register_name (& exp, true))
733 {
734 if (regs == type1_regs)
735 {
736 return "system registers cannot be included in list";
737 }
738 else if (exp.X_add_number == 5)
739 {
740 if (regs == type2_regs)
741 return "PSW cannot be included in list";
742 else
743 * insn |= 0x8;
744 }
745 else
746 * insn |= 0x80000;
747 }
748 else if (* input_line_pointer == '}')
749 {
750 input_line_pointer ++;
751 break;
752 }
753 else if (* input_line_pointer == ',')
754 {
755 input_line_pointer ++;
756 continue;
757 }
758 else if (* input_line_pointer == '-')
759 {
760 /* We have encountered a range of registers: rX - rY */
761 int j;
762 expressionS exp2;
763
764 /* Skip the dash. */
765 ++ input_line_pointer;
766
767 /* Get the second register in the range. */
768 if (! register_name (& exp2))
769 {
770 return "second register should follow dash in register list";
771 exp2.X_add_number = exp.X_add_number;
772 }
773
774 /* Add the rest of the registers in the range. */
775 for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++)
776 {
777 int i;
778
779 /* Locate the given register in the list, and if it is there, insert the corresponding bit into the instruction. */
780 for (i = 0; i < 32; i++)
781 {
782 if (regs[ i ] == j)
783 {
784 * insn |= (1 << i);
785 break;
786 }
787 }
788
789 if (i == 32)
790 {
791 return "illegal register included in list";
792 }
793 }
794 }
795 else
796 {
797 break;
798 }
799
800 skip_white_space();
801 }
802
803 return NULL;
804 }
805 /* end-sanitize-v850e */
806
807 CONST char * md_shortopts = "m:";
808
809 struct option md_longopts[] =
810 {
811 {NULL, no_argument, NULL, 0}
812 };
813 size_t md_longopts_size = sizeof md_longopts;
814
815
816 void
817 md_show_usage (stream)
818 FILE * stream;
819 {
820 fprintf (stream, "V850 options:\n");
821 fprintf (stream, "\t-wsigned_overflow Warn if signed immediate values overflow\n");
822 fprintf (stream, "\t-wunsigned_overflow Warn if unsigned immediate values overflow\n");
823 fprintf (stream, "\t-mv850 The code is targeted at the v850\n");
824 /* start-sanitize-v850e */
825 fprintf (stream, "\t-mv850e The code is targeted at the v850e\n");
826 /* end-sanitize-v850e */
827 /* start-sanitize-v850eq */
828 fprintf (stream, "\t-mv850eq The code is targeted at the v850eq\n");
829 /* end-sanitize-v850eq */
830 }
831
832 int
833 md_parse_option (c, arg)
834 int c;
835 char * arg;
836 {
837 switch (c)
838 {
839 case 'w':
840 if (strcmp (arg, "signed_overflow") == 0)
841 {
842 warn_signed_overflows = TRUE;
843 return 1;
844 }
845 else if (strcmp (arg, "unsigned_overflow") == 0)
846 {
847 warn_unsigned_overflows = TRUE;
848 return 1;
849 }
850 break;
851
852 case 'm':
853 if (strcmp (arg, "v850") == 0)
854 {
855 machine = 0;
856 return 1;
857 }
858 /* start-sanitize-v850e */
859 else if (strcmp (arg, "v850e") == 0)
860 {
861 machine = bfd_mach_v850e;
862 processor_mask = PROCESSOR_V850 | PROCESSOR_V850E;
863
864 return 1;
865 }
866 /* end-sanitize-v850e */
867 /* start-sanitize-v850eq */
868 else if (strcmp (arg, "v850eq") == 0)
869 {
870 machine = bfd_mach_v850eq;
871 processor_mask = PROCESSOR_V850EQ;
872 return 1;
873 }
874 /* end-sanitize-v850eq */
875 break;
876 }
877
878 return 0;
879 }
880
881 symbolS *
882 md_undefined_symbol (name)
883 char * name;
884 {
885 return 0;
886 }
887
888 char *
889 md_atof (type, litp, sizep)
890 int type;
891 char * litp;
892 int * sizep;
893 {
894 int prec;
895 LITTLENUM_TYPE words[4];
896 char * t;
897 int i;
898
899 switch (type)
900 {
901 case 'f':
902 prec = 2;
903 break;
904
905 case 'd':
906 prec = 4;
907 break;
908
909 default:
910 *sizep = 0;
911 return "bad call to md_atof";
912 }
913
914 t = atof_ieee (input_line_pointer, type, words);
915 if (t)
916 input_line_pointer = t;
917
918 *sizep = prec * 2;
919
920 for (i = prec - 1; i >= 0; i--)
921 {
922 md_number_to_chars (litp, (valueT) words[i], 2);
923 litp += 2;
924 }
925
926 return NULL;
927 }
928
929
930 /* Very gross. */
931 void
932 md_convert_frag (abfd, sec, fragP)
933 bfd * abfd;
934 asection * sec;
935 fragS * fragP;
936 {
937 subseg_change (sec, 0);
938 if (fragP->fr_subtype == 0)
939 {
940 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
941 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode);
942 fragP->fr_var = 0;
943 fragP->fr_fix += 2;
944 }
945 else if (fragP->fr_subtype == 1)
946 {
947 /* Reverse the condition of the first branch. */
948 fragP->fr_literal[0] &= 0xf7;
949 /* Mask off all the displacement bits. */
950 fragP->fr_literal[0] &= 0x8f;
951 fragP->fr_literal[1] &= 0x07;
952 /* Now set the displacement bits so that we branch
953 around the unconditional branch. */
954 fragP->fr_literal[0] |= 0x30;
955
956 /* Now create the unconditional branch + fixup to the final
957 target. */
958 md_number_to_chars (&fragP->fr_literal[2], 0x00000780, 4);
959 fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
960 fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode + 1);
961 fragP->fr_var = 0;
962 fragP->fr_fix += 6;
963 }
964 else
965 abort ();
966 }
967
968 valueT
969 md_section_align (seg, addr)
970 asection * seg;
971 valueT addr;
972 {
973 int align = bfd_get_section_alignment (stdoutput, seg);
974 return ((addr + (1 << align) - 1) & (-1 << align));
975 }
976
977 void
978 md_begin ()
979 {
980 char * prev_name = "";
981 register const struct v850_opcode * op;
982 flagword applicable;
983
984
985 v850_hash = hash_new();
986
987 /* Insert unique names into hash table. The V850 instruction set
988 has many identical opcode names that have different opcodes based
989 on the operands. This hash table then provides a quick index to
990 the first opcode with a particular name in the opcode table. */
991
992 op = v850_opcodes;
993 while (op->name)
994 {
995 if (strcmp (prev_name, op->name))
996 {
997 prev_name = (char *) op->name;
998 hash_insert (v850_hash, op->name, (char *) op);
999 }
1000 op++;
1001 }
1002
1003 bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine);
1004
1005 applicable = bfd_applicable_section_flags (stdoutput);
1006
1007 sdata_section = subseg_new (".sdata", 0);
1008 bfd_set_section_flags (stdoutput, sdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1009
1010 tdata_section = subseg_new (".tdata", 0);
1011 bfd_set_section_flags (stdoutput, tdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1012
1013 zdata_section = subseg_new (".zdata", 0);
1014 bfd_set_section_flags (stdoutput, zdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1015
1016 sbss_section = subseg_new (".sbss", 0);
1017 bfd_set_section_flags (stdoutput, sbss_section, applicable & SEC_ALLOC);
1018
1019 tbss_section = subseg_new (".tbss", 0);
1020 bfd_set_section_flags (stdoutput, tbss_section, applicable & SEC_ALLOC);
1021
1022 zbss_section = subseg_new (".zbss", 0);
1023 bfd_set_section_flags (stdoutput, zbss_section, applicable & SEC_ALLOC);
1024
1025 rosdata_section = subseg_new (".rosdata", 0);
1026 bfd_set_section_flags (stdoutput, rosdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY));
1027
1028 rozdata_section = subseg_new (".rozdata", 0);
1029 bfd_set_section_flags (stdoutput, rozdata_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY));
1030
1031 /* start-sanitize-v850e */
1032 call_table_data_section = subseg_new (".call_table_data", 0);
1033 bfd_set_section_flags (stdoutput, call_table_data_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS));
1034
1035 call_table_text_section = subseg_new (".call_table_text", 0);
1036 bfd_set_section_flags (stdoutput, call_table_text_section, applicable & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE));
1037 /* end-sanitize-v850e */
1038 }
1039
1040
1041 /* start-sanitize-v850e */
1042 static bfd_reloc_code_real_type
1043 handle_ctoff (const struct v850_operand * operand)
1044 {
1045 if (operand == NULL)
1046 return BFD_RELOC_V850_CALLT_16_16_OFFSET;
1047
1048 if ( operand->bits != 6
1049 || operand->shift != 0)
1050 {
1051 as_bad ("ctoff() relocation used on an instruction which does not support it");
1052 return BFD_RELOC_64; /* Used to indicate an error condition. */
1053 }
1054
1055 return BFD_RELOC_V850_CALLT_6_7_OFFSET;
1056 }
1057 /* end-sanitize-v850e */
1058
1059 static bfd_reloc_code_real_type
1060 handle_sdaoff (const struct v850_operand * operand)
1061 {
1062 if (operand == NULL) return BFD_RELOC_V850_SDA_16_16_OFFSET;
1063 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_SDA_15_16_OFFSET;
1064 /* start-sanitize-v850e */
1065 if (operand->bits == -1) return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET;
1066 /* end-sanitize-v850e */
1067
1068 if ( operand->bits != 16
1069 || operand->shift != 16)
1070 {
1071 as_bad ("sdaoff() relocation used on an instruction which does not support it");
1072 return BFD_RELOC_64; /* Used to indicate an error condition. */
1073 }
1074
1075 return BFD_RELOC_V850_SDA_16_16_OFFSET;
1076 }
1077
1078 static bfd_reloc_code_real_type
1079 handle_zdaoff (const struct v850_operand * operand)
1080 {
1081 if (operand == NULL) return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1082 if (operand->bits == 15 && operand->shift == 17) return BFD_RELOC_V850_ZDA_15_16_OFFSET;
1083 /* start-sanitize-v850e */
1084 if (operand->bits == -1) return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET;
1085 /* end-sanitize-v850e */
1086
1087 if ( operand->bits != 16
1088 || operand->shift != 16)
1089 {
1090 as_bad ("zdaoff() relocation used on an instruction which does not support it");
1091 return BFD_RELOC_64; /* Used to indicate an error condition. */
1092 }
1093
1094 return BFD_RELOC_V850_ZDA_16_16_OFFSET;
1095 }
1096
1097 static bfd_reloc_code_real_type
1098 handle_tdaoff (const struct v850_operand * operand)
1099 {
1100 if (operand == NULL) return BFD_RELOC_V850_TDA_7_7_OFFSET; /* data item, not an instruction. */
1101 if (operand->bits == 6 && operand->shift == 1) return BFD_RELOC_V850_TDA_6_8_OFFSET; /* sld.w/sst.w, operand: D8_6 */
1102 /* start-sanitize-v850e */
1103 if (operand->bits == 4 && operand->insert != NULL) return BFD_RELOC_V850_TDA_4_5_OFFSET; /* sld.hu, operand: D5-4 */
1104 if (operand->bits == 4 && operand->insert == NULL) return BFD_RELOC_V850_TDA_4_4_OFFSET; /* sld.bu, operand: D4 */
1105 /* end-sanitize-v850e */
1106 if (operand->bits == 16 && operand->shift == 16) return BFD_RELOC_V850_TDA_16_16_OFFSET; /* set1 & chums, operands: D16 */
1107
1108 if (operand->bits != 7)
1109 {
1110 as_bad ("tdaoff() relocation used on an instruction which does not support it");
1111 return BFD_RELOC_64; /* Used to indicate an error condition. */
1112 }
1113
1114 return operand->insert != NULL
1115 ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */
1116 : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */
1117 }
1118
1119 /* Warning: The code in this function relies upon the definitions
1120 in the v850_operands[] array (defined in opcodes/v850-opc.c)
1121 matching the hard coded values contained herein. */
1122
1123 static bfd_reloc_code_real_type
1124 v850_reloc_prefix (const struct v850_operand * operand)
1125 {
1126 boolean paren_skipped = false;
1127
1128
1129 /* Skip leading opening parenthesis. */
1130 if (* input_line_pointer == '(')
1131 {
1132 ++ input_line_pointer;
1133 paren_skipped = true;
1134 }
1135
1136 #define CHECK_(name, reloc) \
1137 if (strncmp (input_line_pointer, name##"(", strlen (name) + 1) == 0) \
1138 { \
1139 input_line_pointer += strlen (name); \
1140 return reloc; \
1141 }
1142
1143 CHECK_ ("hi0", BFD_RELOC_HI16);
1144 CHECK_ ("hi", BFD_RELOC_HI16_S);
1145 CHECK_ ("lo", BFD_RELOC_LO16);
1146 CHECK_ ("sdaoff", handle_sdaoff (operand));
1147 CHECK_ ("zdaoff", handle_zdaoff (operand));
1148 CHECK_ ("tdaoff", handle_tdaoff (operand));
1149
1150 /* start-sanitize-v850e */
1151 CHECK_ ("hilo", BFD_RELOC_32);
1152 CHECK_ ("ctoff", handle_ctoff (operand));
1153 /* end-sanitize-v850e */
1154
1155 /* Restore skipped parenthesis. */
1156 if (paren_skipped)
1157 -- input_line_pointer;
1158
1159 return BFD_RELOC_UNUSED;
1160 }
1161
1162 void
1163 md_assemble (str)
1164 char * str;
1165 {
1166 char * s;
1167 char * start_of_operands;
1168 struct v850_opcode * opcode;
1169 struct v850_opcode * next_opcode;
1170 const unsigned char * opindex_ptr;
1171 int next_opindex;
1172 int relaxable;
1173 unsigned long insn;
1174 unsigned long insn_size;
1175 char * f;
1176 int i;
1177 int match;
1178 boolean extra_data_after_insn = false;
1179 unsigned extra_data_len;
1180 unsigned long extra_data;
1181 char * saved_input_line_pointer;
1182
1183 /* Get the opcode. */
1184 for (s = str; *s != '\0' && ! isspace (*s); s++)
1185 continue;
1186
1187 if (*s != '\0')
1188 *s++ = '\0';
1189
1190 /* find the first opcode with the proper name */
1191 opcode = (struct v850_opcode *)hash_find (v850_hash, str);
1192 if (opcode == NULL)
1193 {
1194 as_bad ("Unrecognized opcode: `%s'", str);
1195 ignore_rest_of_line ();
1196 return;
1197 }
1198
1199 str = s;
1200 while (isspace (* str))
1201 ++ str;
1202
1203 start_of_operands = str;
1204
1205 saved_input_line_pointer = input_line_pointer;
1206
1207 for (;;)
1208 {
1209 const char * errmsg = NULL;
1210
1211 match = 0;
1212
1213 if ((opcode->processors & processor_mask) == 0)
1214 {
1215 errmsg = "Target processor does not support this instruction.";
1216 goto error;
1217 }
1218
1219 relaxable = 0;
1220 fc = 0;
1221 next_opindex = 0;
1222 insn = opcode->opcode;
1223 extra_data_after_insn = false;
1224
1225 input_line_pointer = str = start_of_operands;
1226
1227 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1228 {
1229 const struct v850_operand * operand;
1230 char * hold;
1231 expressionS ex;
1232 bfd_reloc_code_real_type reloc;
1233
1234 if (next_opindex == 0)
1235 {
1236 operand = & v850_operands[ * opindex_ptr ];
1237 }
1238 else
1239 {
1240 operand = & v850_operands[ next_opindex ];
1241 next_opindex = 0;
1242 }
1243
1244 errmsg = NULL;
1245
1246 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1247 ++str;
1248
1249 if (operand->flags & V850_OPERAND_RELAX)
1250 relaxable = 1;
1251
1252 /* Gather the operand. */
1253 hold = input_line_pointer;
1254 input_line_pointer = str;
1255
1256 /* lo(), hi(), hi0(), etc... */
1257 if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED)
1258 {
1259 if (reloc == BFD_RELOC_64) /* This is a fake reloc, used to indicate an error condition. */
1260 {
1261 match = 1;
1262 goto error;
1263 }
1264
1265 expression (& ex);
1266
1267 if (ex.X_op == O_constant)
1268 {
1269 switch (reloc)
1270 {
1271 case BFD_RELOC_V850_ZDA_16_16_OFFSET:
1272 /* To cope with "not1 7, zdaoff(0xfffff006)[r0]" and the like. */
1273 /* Fall through. */
1274
1275 case BFD_RELOC_LO16:
1276 {
1277 /* Truncate, then sign extend the value. */
1278 ex.X_add_number = SEXT16 (ex.X_add_number);
1279 break;
1280 }
1281
1282 case BFD_RELOC_HI16:
1283 {
1284 /* Truncate, then sign extend the value. */
1285 ex.X_add_number = SEXT16 (ex.X_add_number >> 16);
1286 break;
1287 }
1288
1289 case BFD_RELOC_HI16_S:
1290 {
1291 /* Truncate, then sign extend the value. */
1292 int temp = (ex.X_add_number >> 16) & 0xffff;
1293
1294 temp += (ex.X_add_number >> 15) & 1;
1295
1296 ex.X_add_number = SEXT16 (temp);
1297 break;
1298 }
1299
1300 /* start-sanitize-v850e */
1301 case BFD_RELOC_32:
1302 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1303 {
1304 errmsg = "use bigger instruction";
1305 goto error;
1306 }
1307
1308 extra_data_after_insn = true;
1309 extra_data_len = 4;
1310 extra_data = ex.X_add_number;
1311 ex.X_add_number = 0;
1312 break;
1313 /* end-sanitize-v850e */
1314
1315 default:
1316 fprintf (stderr, "reloc: %d\n", reloc);
1317 as_bad ("AAARG -> unhandled constant reloc");
1318 break;
1319 }
1320
1321 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1322 (char *) NULL, 0);
1323 }
1324 else
1325 {
1326 if (reloc == BFD_RELOC_32)
1327 {
1328 if ((operand->flags & V850E_IMMEDIATE32) == 0)
1329 {
1330 errmsg = "use bigger instruction";
1331 goto error;
1332 }
1333
1334 extra_data_after_insn = true;
1335 extra_data_len = 4;
1336 extra_data = ex.X_add_number;
1337 ex.X_add_number = 0;
1338 }
1339
1340 if (fc > MAX_INSN_FIXUPS)
1341 as_fatal ("too many fixups");
1342
1343 fixups[ fc ].exp = ex;
1344 fixups[ fc ].opindex = * opindex_ptr;
1345 fixups[ fc ].reloc = reloc;
1346 fc++;
1347 }
1348 }
1349 else
1350 {
1351 errmsg = NULL;
1352
1353 if ((operand->flags & V850_OPERAND_REG) != 0)
1354 {
1355 if (!register_name (& ex))
1356 {
1357 errmsg = "invalid register name";
1358 }
1359
1360 if ((operand->flags & V850_NOT_R0)
1361 && ex.X_add_number == 0)
1362 {
1363 errmsg = "register r0 cannot be used here";
1364 }
1365 }
1366 else if ((operand->flags & V850_OPERAND_SRG) != 0)
1367 {
1368 if (!system_register_name (& ex, true))
1369 {
1370 errmsg = "invalid system register name";
1371 }
1372 }
1373 else if ((operand->flags & V850_OPERAND_EP) != 0)
1374 {
1375 char * start = input_line_pointer;
1376 char c = get_symbol_end ();
1377
1378 if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0)
1379 {
1380 /* Put things back the way we found them. */
1381 *input_line_pointer = c;
1382 input_line_pointer = start;
1383 errmsg = "expected EP register";
1384 goto error;
1385 }
1386
1387 *input_line_pointer = c;
1388 str = input_line_pointer;
1389 input_line_pointer = hold;
1390
1391 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']')
1392 ++str;
1393 continue;
1394 }
1395 else if ((operand->flags & V850_OPERAND_CC) != 0)
1396 {
1397 if (!cc_name (& ex))
1398 {
1399 errmsg = "invalid condition code name";
1400 }
1401 }
1402 /* start-sanitize-v850e */
1403 else if (operand->flags & V850E_PUSH_POP)
1404 {
1405 errmsg = parse_register_list (& insn, operand);
1406
1407 /* The parse_register_list() function has already done everything, so fake a dummy expression. */
1408 ex.X_op = O_constant;
1409 ex.X_add_number = 0;
1410 }
1411 else if (operand->flags & V850E_IMMEDIATE16)
1412 {
1413 expression (& ex);
1414
1415 if (ex.X_op != O_constant)
1416 errmsg = "constant expression expected";
1417 else if (ex.X_add_number & 0xffff0000)
1418 {
1419 if (ex.X_add_number & 0xffff)
1420 errmsg = "constant too big to fit into instruction";
1421 else if ((insn & 0x001fffc0) == 0x00130780)
1422 ex.X_add_number >>= 16;
1423 else
1424 errmsg = "constant too big to fit into instruction";
1425 }
1426
1427 extra_data_after_insn = true;
1428 extra_data_len = 2;
1429 extra_data = ex.X_add_number;
1430 ex.X_add_number = 0;
1431 }
1432 else if (operand->flags & V850E_IMMEDIATE32)
1433 {
1434 expression (& ex);
1435
1436 if (ex.X_op != O_constant)
1437 errmsg = "constant expression expected";
1438
1439 extra_data_after_insn = true;
1440 extra_data_len = 4;
1441 extra_data = ex.X_add_number;
1442 ex.X_add_number = 0;
1443 }
1444 /* end-sanitize-v850e */
1445 else if (register_name (&ex)
1446 && (operand->flags & V850_OPERAND_REG) == 0)
1447 {
1448 errmsg = "syntax error: register not expected";
1449 }
1450 else if (system_register_name (& ex, false)
1451 && (operand->flags & V850_OPERAND_SRG) == 0)
1452 {
1453 errmsg = "syntax error: system register not expected";
1454 }
1455 else if (cc_name (&ex)
1456 && (operand->flags & V850_OPERAND_CC) == 0)
1457 {
1458 errmsg = "syntax error: condition code not expected";
1459 }
1460 else
1461 {
1462 expression (& ex);
1463 /* start-sanitize-v850e */
1464 /* Special case:
1465 If we are assembling a MOV instruction (or a CALLT.... :-)
1466 and the immediate value does not fit into the bits available
1467 then create a fake error so that the next MOV instruction
1468 will be selected. This one has a 32 bit immediate field. */
1469
1470 if (((insn & 0x07e0) == 0x0200)
1471 && ex.X_op == O_constant
1472 && (ex.X_add_number < (- (1 << (operand->bits - 1))) || ex.X_add_number > ((1 << operand->bits) - 1)))
1473 errmsg = "use bigger instruction";
1474 /* end-sanitize-v850e */
1475 }
1476
1477 if (errmsg)
1478 goto error;
1479
1480 /* fprintf (stderr, "insn: %x, operand %d, op: %d, add_number: %d\n", insn, opindex_ptr - opcode->operands, ex.X_op, ex.X_add_number ); */
1481
1482 switch (ex.X_op)
1483 {
1484 case O_illegal:
1485 errmsg = "illegal operand";
1486 goto error;
1487 case O_absent:
1488 errmsg = "missing operand";
1489 goto error;
1490 case O_register:
1491 if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0)
1492 {
1493 errmsg = "invalid operand";
1494 goto error;
1495 }
1496 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1497 (char *) NULL, 0);
1498 break;
1499
1500 case O_constant:
1501 insn = v850_insert_operand (insn, operand, ex.X_add_number,
1502 (char *) NULL, 0);
1503 break;
1504
1505 default:
1506 /* We need to generate a fixup for this expression. */
1507 if (fc >= MAX_INSN_FIXUPS)
1508 as_fatal ("too many fixups");
1509
1510 fixups[ fc ].exp = ex;
1511 fixups[ fc ].opindex = * opindex_ptr;
1512 fixups[ fc ].reloc = BFD_RELOC_UNUSED;
1513 ++fc;
1514 break;
1515 }
1516 }
1517
1518 str = input_line_pointer;
1519 input_line_pointer = hold;
1520
1521 while (*str == ' ' || *str == ',' || *str == '[' || *str == ']'
1522 || *str == ')')
1523 ++str;
1524 }
1525 match = 1;
1526
1527 error:
1528 if (match == 0)
1529 {
1530 next_opcode = opcode + 1;
1531 if (next_opcode->name != NULL && strcmp (next_opcode->name, opcode->name) == 0)
1532 {
1533 opcode = next_opcode;
1534 continue;
1535 }
1536
1537 as_bad (errmsg);
1538 ignore_rest_of_line ();
1539 input_line_pointer = saved_input_line_pointer;
1540 return;
1541 }
1542 break;
1543 }
1544
1545 while (isspace (*str))
1546 ++str;
1547
1548 if (*str != '\0')
1549 as_bad ("junk at end of line: `%s'", str);
1550
1551 input_line_pointer = str;
1552
1553 /* Write out the instruction.
1554
1555 Four byte insns have an opcode with the two high bits on. */
1556 if (relaxable && fc > 0)
1557 {
1558 f = frag_var (rs_machine_dependent, 6, 4, 0,
1559 fixups[0].exp.X_add_symbol,
1560 fixups[0].exp.X_add_number,
1561 (char *)fixups[0].opindex);
1562 insn_size = 2;
1563 md_number_to_chars (f, insn, insn_size);
1564 md_number_to_chars (f + 2, 0, 4);
1565 fc = 0;
1566 }
1567 else
1568 {
1569 if ((insn & 0x0600) == 0x0600)
1570 insn_size = 4;
1571 else
1572 insn_size = 2;
1573
1574 /* start-sanitize-v850e */
1575 /* Special case: 32 bit MOV */
1576 if ((insn & 0xffe0) == 0x0620)
1577 insn_size = 2;
1578 /* end-sanitize-v850e */
1579
1580 f = frag_more (insn_size);
1581
1582 md_number_to_chars (f, insn, insn_size);
1583
1584 if (extra_data_after_insn)
1585 {
1586 f = frag_more (extra_data_len);
1587
1588 md_number_to_chars (f, extra_data, extra_data_len);
1589
1590 extra_data_after_insn = false;
1591 }
1592 }
1593
1594 /* Create any fixups. At this point we do not use a
1595 bfd_reloc_code_real_type, but instead just use the
1596 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1597 handle fixups for any operand type, although that is admittedly
1598 not a very exciting feature. We pick a BFD reloc type in
1599 md_apply_fix. */
1600 for (i = 0; i < fc; i++)
1601 {
1602 const struct v850_operand * operand;
1603 bfd_reloc_code_real_type reloc;
1604
1605 operand = & v850_operands[ fixups[i].opindex ];
1606
1607 reloc = fixups[i].reloc;
1608
1609 if (reloc != BFD_RELOC_UNUSED)
1610 {
1611 reloc_howto_type * reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1612 int size;
1613 int address;
1614 fixS * fixP;
1615
1616 if (!reloc_howto)
1617 abort();
1618
1619 size = bfd_get_reloc_size (reloc_howto);
1620
1621 if (size != 2 && size != 4) /* XXX this will abort on an R_V850_8 reloc - is this reloc actually used ? */
1622 abort();
1623
1624 address = (f - frag_now->fr_literal) + insn_size - size;
1625
1626 if (reloc == BFD_RELOC_32)
1627 {
1628 address += 2;
1629 }
1630
1631 fixP = fix_new_exp (frag_now, address, size,
1632 & fixups[i].exp,
1633 reloc_howto->pc_relative,
1634 reloc);
1635
1636 switch (reloc)
1637 {
1638 case BFD_RELOC_LO16:
1639 case BFD_RELOC_HI16:
1640 case BFD_RELOC_HI16_S:
1641 fixP->fx_no_overflow = 1;
1642 break;
1643 }
1644 }
1645 else
1646 {
1647 fix_new_exp (
1648 frag_now,
1649 f - frag_now->fr_literal, 4,
1650 & fixups[i].exp,
1651 1 /* FIXME: V850_OPERAND_RELATIVE ??? */,
1652 (bfd_reloc_code_real_type) (fixups[i].opindex + (int) BFD_RELOC_UNUSED)
1653 );
1654 }
1655 }
1656
1657 input_line_pointer = saved_input_line_pointer;
1658 }
1659
1660
1661 /* If while processing a fixup, a reloc really needs to be created */
1662 /* then it is done here. */
1663
1664 arelent *
1665 tc_gen_reloc (seg, fixp)
1666 asection * seg;
1667 fixS * fixp;
1668 {
1669 arelent * reloc;
1670
1671 reloc = (arelent *) xmalloc (sizeof (arelent));
1672 reloc->sym_ptr_ptr = & fixp->fx_addsy->bsym;
1673 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1674 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
1675
1676 if (reloc->howto == (reloc_howto_type *) NULL)
1677 {
1678 as_bad_where (fixp->fx_file, fixp->fx_line,
1679 "reloc %d not supported by object file format", (int)fixp->fx_r_type);
1680
1681 xfree (reloc);
1682
1683 return NULL;
1684 }
1685
1686 reloc->addend = fixp->fx_addnumber;
1687
1688 return reloc;
1689 }
1690
1691 /* Assume everything will fit in two bytes, then expand as necessary. */
1692 int
1693 md_estimate_size_before_relax (fragp, seg)
1694 fragS * fragp;
1695 asection * seg;
1696 {
1697 fragp->fr_var = 4;
1698 return 2;
1699 }
1700
1701 long
1702 md_pcrel_from (fixp)
1703 fixS * fixp;
1704 {
1705 /* If the symbol is undefined, or in a section other than our own,
1706 then let the linker figure it out. */
1707 if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy))
1708 {
1709 /* The symbol is undefined. Let the linker figure it out. */
1710 return 0;
1711 }
1712 return fixp->fx_frag->fr_address + fixp->fx_where;
1713 }
1714
1715 int
1716 md_apply_fix3 (fixp, valuep, seg)
1717 fixS * fixp;
1718 valueT * valuep;
1719 segT seg;
1720 {
1721 valueT value;
1722 char * where;
1723
1724 if (fixp->fx_addsy == (symbolS *) NULL)
1725 {
1726 value = * valuep;
1727 fixp->fx_done = 1;
1728 }
1729 else if (fixp->fx_pcrel)
1730 value = * valuep;
1731 else
1732 {
1733 value = fixp->fx_offset;
1734 if (fixp->fx_subsy != (symbolS *) NULL)
1735 {
1736 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
1737 value -= S_GET_VALUE (fixp->fx_subsy);
1738 else
1739 {
1740 /* We don't actually support subtracting a symbol. */
1741 as_bad_where (fixp->fx_file, fixp->fx_line,
1742 "expression too complex");
1743 }
1744 }
1745 }
1746
1747 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
1748 {
1749 int opindex;
1750 const struct v850_operand * operand;
1751 unsigned long insn;
1752
1753 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
1754 operand = & v850_operands[ opindex ];
1755
1756 /* Fetch the instruction, insert the fully resolved operand
1757 value, and stuff the instruction back again.
1758
1759 Note the instruction has been stored in little endian
1760 format! */
1761 where = fixp->fx_frag->fr_literal + fixp->fx_where;
1762
1763 insn = bfd_getl32 ((unsigned char *) where);
1764 insn = v850_insert_operand (insn, operand, (offsetT) value,
1765 fixp->fx_file, fixp->fx_line);
1766 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
1767
1768 if (fixp->fx_done)
1769 {
1770 /* Nothing else to do here. */
1771 return 1;
1772 }
1773
1774 /* Determine a BFD reloc value based on the operand information.
1775 We are only prepared to turn a few of the operands into relocs. */
1776
1777 if (operand->bits == 22)
1778 fixp->fx_r_type = BFD_RELOC_V850_22_PCREL;
1779 else if (operand->bits == 9)
1780 fixp->fx_r_type = BFD_RELOC_V850_9_PCREL;
1781 else
1782 {
1783 /* fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); */
1784
1785 as_bad_where(fixp->fx_file, fixp->fx_line,
1786 "unresolved expression that must be resolved");
1787 fixp->fx_done = 1;
1788 return 1;
1789 }
1790 }
1791 else if (fixp->fx_done)
1792 {
1793 /* We still have to insert the value into memory! */
1794 where = fixp->fx_frag->fr_literal + fixp->fx_where;
1795 if (fixp->fx_size == 1)
1796 *where = value & 0xff;
1797 else if (fixp->fx_size == 2)
1798 bfd_putl16 (value & 0xffff, (unsigned char *) where);
1799 else if (fixp->fx_size == 4)
1800 bfd_putl32 (value, (unsigned char *) where);
1801 }
1802
1803 fixp->fx_addnumber = value;
1804 return 1;
1805 }
1806
1807 \f
1808 /* Insert an operand value into an instruction. */
1809
1810 static unsigned long
1811 v850_insert_operand (insn, operand, val, file, line)
1812 unsigned long insn;
1813 const struct v850_operand * operand;
1814 offsetT val;
1815 char *file;
1816 unsigned int line;
1817 {
1818 if (operand->insert)
1819 {
1820 const char * message = NULL;
1821
1822 insn = (*operand->insert) (insn, val, & message);
1823 if (message != NULL)
1824 {
1825 if (file == (char *) NULL)
1826 as_warn (message);
1827 else
1828 as_warn_where (file, line, message);
1829 }
1830 }
1831 else
1832 {
1833 if (operand->bits != 32)
1834 {
1835 long min, max;
1836 offsetT test;
1837
1838 if ((operand->flags & V850_OPERAND_SIGNED) != 0)
1839 {
1840 if (! warn_signed_overflows)
1841 max = (1 << operand->bits) - 1;
1842 else
1843 max = (1 << (operand->bits - 1)) - 1;
1844
1845 min = - (1 << (operand->bits - 1));
1846 }
1847 else
1848 {
1849 max = (1 << operand->bits) - 1;
1850
1851 if (! warn_unsigned_overflows)
1852 min = - (1 << (operand->bits - 1));
1853 else
1854 min = 0;
1855 }
1856
1857 test = val;
1858
1859 if (test < (offsetT) min || test > (offsetT) max)
1860 {
1861 const char * err = "operand out of range (%s not between %ld and %ld)";
1862 char buf[100];
1863
1864 sprint_value (buf, test);
1865 if (file == (char *) NULL)
1866 as_warn (err, buf, min, max);
1867 else
1868 as_warn_where (file, line, err, buf, min, max);
1869 }
1870 }
1871
1872 insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift);
1873 }
1874
1875 return insn;
1876 }
1877
1878 /* Parse a cons expression. We have to handle hi(), lo(), etc
1879 on the v850. */
1880 void
1881 parse_cons_expression_v850 (exp)
1882 expressionS *exp;
1883 {
1884 /* See if there's a reloc prefix like hi() we have to handle. */
1885 hold_cons_reloc = v850_reloc_prefix (NULL);
1886
1887 /* Do normal expression parsing. */
1888 expression (exp);
1889 }
1890
1891 /* Create a fixup for a cons expression. If parse_cons_expression_v850
1892 found a reloc prefix, then we use that reloc, else we choose an
1893 appropriate one based on the size of the expression. */
1894 void
1895 cons_fix_new_v850 (frag, where, size, exp)
1896 fragS *frag;
1897 int where;
1898 int size;
1899 expressionS *exp;
1900 {
1901 if (hold_cons_reloc == BFD_RELOC_UNUSED)
1902 {
1903 if (size == 4)
1904 hold_cons_reloc = BFD_RELOC_32;
1905 if (size == 2)
1906 hold_cons_reloc = BFD_RELOC_16;
1907 if (size == 1)
1908 hold_cons_reloc = BFD_RELOC_8;
1909 }
1910
1911 if (exp != NULL)
1912 fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc);
1913 else
1914 fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc);
1915 }
GDB Binutils - Deliverables
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