Commit | Line | Data |
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c6aa56bc | 1 | /* tc-v850.c -- Assembler code for the NEC V850 |
47bfb6fc | 2 | Copyright (C) 1996, 1997 Free Software Foundation. |
c6aa56bc C |
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" | |
10fba7f1 JL |
26 | |
27 | /* Temporarily holds the reloc in a cons expression. */ | |
28 | static bfd_reloc_code_real_type hold_cons_reloc; | |
c6aa56bc | 29 | \f |
0e8f9bd1 JL |
30 | /* Structure to hold information about predefined registers. */ |
31 | struct reg_name | |
32 | { | |
33 | const char *name; | |
34 | int value; | |
35 | }; | |
36 | ||
c6aa56bc C |
37 | /* Generic assembler global variables which must be defined by all targets. */ |
38 | ||
39 | /* Characters which always start a comment. */ | |
40 | const char comment_chars[] = "#"; | |
41 | ||
42 | /* Characters which start a comment at the beginning of a line. */ | |
dcf5d117 | 43 | const char line_comment_chars[] = ";#"; |
c6aa56bc C |
44 | |
45 | /* Characters which may be used to separate multiple commands on a | |
46 | single line. */ | |
47 | const char line_separator_chars[] = ";"; | |
48 | ||
49 | /* Characters which are used to indicate an exponent in a floating | |
50 | point number. */ | |
51 | const char EXP_CHARS[] = "eE"; | |
52 | ||
53 | /* Characters which mean that a number is a floating point constant, | |
54 | as in 0d1.0. */ | |
55 | const char FLT_CHARS[] = "dD"; | |
56 | \f | |
f964b01d | 57 | |
a334533c JL |
58 | const relax_typeS md_relax_table[] = { |
59 | {0xff, -0x100, 2, 1}, | |
60 | {0x1fffff, -0x200000, 6, 0}, | |
61 | }; | |
62 | ||
c6aa56bc C |
63 | /* local functions */ |
64 | static unsigned long v850_insert_operand | |
65 | PARAMS ((unsigned long insn, const struct v850_operand *operand, | |
66 | offsetT val, char *file, unsigned int line)); | |
c84615bc | 67 | static int reg_name_search PARAMS ((const struct reg_name *, int, const char *)); |
c6aa56bc | 68 | static boolean register_name PARAMS ((expressionS *expressionP)); |
0e8f9bd1 | 69 | static boolean system_register_name PARAMS ((expressionS *expressionP)); |
c9f1b2d9 | 70 | static boolean cc_name PARAMS ((expressionS *expressionP)); |
f964b01d | 71 | static bfd_reloc_code_real_type v850_reloc_prefix PARAMS ((void)); |
c6aa56bc C |
72 | |
73 | ||
74 | /* fixups */ | |
75 | #define MAX_INSN_FIXUPS (5) | |
76 | struct v850_fixup | |
77 | { | |
78 | expressionS exp; | |
79 | int opindex; | |
80 | bfd_reloc_code_real_type reloc; | |
81 | }; | |
82 | struct v850_fixup fixups[MAX_INSN_FIXUPS]; | |
83 | static int fc; | |
84 | \f | |
85 | const char *md_shortopts = ""; | |
86 | struct option md_longopts[] = { | |
87 | {NULL, no_argument, NULL, 0} | |
88 | }; | |
89 | size_t md_longopts_size = sizeof(md_longopts); | |
90 | ||
91 | /* The target specific pseudo-ops which we support. */ | |
92 | const pseudo_typeS md_pseudo_table[] = | |
93 | { | |
7e96935e | 94 | {"word", cons, 4}, |
c6aa56bc C |
95 | { NULL, NULL, 0 } |
96 | }; | |
97 | ||
98 | /* Opcode hash table. */ | |
99 | static struct hash_control *v850_hash; | |
100 | ||
1510cd39 C |
101 | /* This table is sorted. Suitable for searching by a binary search. */ |
102 | static const struct reg_name pre_defined_registers[] = | |
c6aa56bc C |
103 | { |
104 | { "ep", 30 }, /* ep - element ptr */ | |
105 | { "gp", 4 }, /* gp - global ptr */ | |
106 | { "lp", 31 }, /* lp - link ptr */ | |
107 | { "r0", 0 }, | |
108 | { "r1", 1 }, | |
109 | { "r10", 10 }, | |
110 | { "r11", 11 }, | |
111 | { "r12", 12 }, | |
112 | { "r13", 13 }, | |
113 | { "r14", 14 }, | |
114 | { "r15", 15 }, | |
115 | { "r16", 16 }, | |
116 | { "r17", 17 }, | |
117 | { "r18", 18 }, | |
118 | { "r19", 19 }, | |
119 | { "r2", 2 }, | |
120 | { "r20", 20 }, | |
121 | { "r21", 21 }, | |
122 | { "r22", 22 }, | |
123 | { "r23", 23 }, | |
124 | { "r24", 24 }, | |
125 | { "r25", 25 }, | |
126 | { "r26", 26 }, | |
127 | { "r27", 27 }, | |
128 | { "r28", 28 }, | |
129 | { "r29", 29 }, | |
130 | { "r3", 3 }, | |
131 | { "r30", 30 }, | |
132 | { "r31", 31 }, | |
133 | { "r4", 4 }, | |
134 | { "r5", 5 }, | |
135 | { "r6", 6 }, | |
136 | { "r7", 7 }, | |
137 | { "r8", 8 }, | |
138 | { "r9", 9 }, | |
139 | { "sp", 3 }, /* sp - stack ptr */ | |
140 | { "tp", 5 }, /* tp - text ptr */ | |
141 | { "zero", 0 }, | |
142 | }; | |
1510cd39 C |
143 | #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct reg_name)) |
144 | ||
145 | ||
146 | static const struct reg_name system_registers[] = | |
147 | { | |
47bfb6fc | 148 | { "ecr", 4 }, |
1510cd39 C |
149 | { "eipc", 0 }, |
150 | { "eipsw", 1 }, | |
151 | { "fepc", 2 }, | |
152 | { "fepsw", 3 }, | |
1510cd39 C |
153 | { "psw", 5 }, |
154 | }; | |
0e8f9bd1 | 155 | #define SYSREG_NAME_CNT (sizeof(system_registers) / sizeof(struct reg_name)) |
1510cd39 C |
156 | |
157 | static const struct reg_name cc_names[] = | |
158 | { | |
159 | { "c", 0x1 }, | |
160 | { "ge", 0xe }, | |
161 | { "gt", 0xf }, | |
162 | { "h", 0xb }, | |
163 | { "l", 0x1 }, | |
164 | { "le", 0x7 }, | |
165 | { "lt", 0x6 }, | |
166 | { "n", 0x4 }, | |
167 | { "nc", 0x9 }, | |
168 | { "nh", 0x3 }, | |
169 | { "nl", 0x9 }, | |
170 | { "ns", 0xc }, | |
171 | { "nv", 0x8 }, | |
172 | { "nz", 0xa }, | |
173 | { "p", 0xc }, | |
174 | { "s", 0x4 }, | |
175 | { "sa", 0xd }, | |
176 | { "t", 0x5 }, | |
177 | { "v", 0x0 }, | |
178 | { "z", 0x2 }, | |
179 | }; | |
c9f1b2d9 | 180 | #define CC_NAME_CNT (sizeof(cc_names) / sizeof(struct reg_name)) |
c6aa56bc | 181 | |
0e8f9bd1 JL |
182 | /* reg_name_search does a binary search of the given register table |
183 | to see if "name" is a valid regiter name. Returns the register | |
c6aa56bc C |
184 | number from the array on success, or -1 on failure. */ |
185 | ||
186 | static int | |
c84615bc C |
187 | reg_name_search (regs, regcount, name) |
188 | const struct reg_name *regs; | |
189 | int regcount; | |
190 | const char *name; | |
c6aa56bc | 191 | { |
c84615bc | 192 | int middle, low, high; |
c6aa56bc C |
193 | int cmp; |
194 | ||
195 | low = 0; | |
c84615bc C |
196 | high = regcount - 1; |
197 | ||
c6aa56bc C |
198 | do |
199 | { | |
200 | middle = (low + high) / 2; | |
c84615bc | 201 | cmp = strcasecmp (name, regs[middle].name); |
c6aa56bc C |
202 | if (cmp < 0) |
203 | high = middle - 1; | |
204 | else if (cmp > 0) | |
205 | low = middle + 1; | |
206 | else | |
c84615bc | 207 | return regs[middle].value; |
c6aa56bc C |
208 | } |
209 | while (low <= high); | |
210 | return -1; | |
211 | } | |
212 | ||
213 | ||
214 | /* Summary of register_name(). | |
215 | * | |
216 | * in: Input_line_pointer points to 1st char of operand. | |
217 | * | |
218 | * out: A expressionS. | |
219 | * The operand may have been a register: in this case, X_op == O_register, | |
220 | * X_add_number is set to the register number, and truth is returned. | |
221 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
222 | * its original state. | |
223 | */ | |
224 | static boolean | |
225 | register_name (expressionP) | |
226 | expressionS *expressionP; | |
227 | { | |
228 | int reg_number; | |
229 | char *name; | |
230 | char *start; | |
231 | char c; | |
232 | ||
233 | /* Find the spelling of the operand */ | |
234 | start = name = input_line_pointer; | |
235 | ||
236 | c = get_symbol_end (); | |
c84615bc | 237 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); |
0e8f9bd1 JL |
238 | |
239 | /* look to see if it's in the register table */ | |
240 | if (reg_number >= 0) | |
241 | { | |
242 | expressionP->X_op = O_register; | |
243 | expressionP->X_add_number = reg_number; | |
244 | ||
245 | /* make the rest nice */ | |
246 | expressionP->X_add_symbol = NULL; | |
247 | expressionP->X_op_symbol = NULL; | |
248 | *input_line_pointer = c; /* put back the delimiting char */ | |
249 | return true; | |
250 | } | |
251 | else | |
252 | { | |
253 | /* reset the line as if we had not done anything */ | |
254 | *input_line_pointer = c; /* put back the delimiting char */ | |
255 | input_line_pointer = start; /* reset input_line pointer */ | |
256 | return false; | |
257 | } | |
258 | } | |
259 | ||
260 | /* Summary of system_register_name(). | |
261 | * | |
262 | * in: Input_line_pointer points to 1st char of operand. | |
263 | * | |
264 | * out: A expressionS. | |
265 | * The operand may have been a register: in this case, X_op == O_register, | |
266 | * X_add_number is set to the register number, and truth is returned. | |
267 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
268 | * its original state. | |
269 | */ | |
270 | static boolean | |
271 | system_register_name (expressionP) | |
272 | expressionS *expressionP; | |
273 | { | |
274 | int reg_number; | |
275 | char *name; | |
276 | char *start; | |
277 | char c; | |
278 | ||
279 | /* Find the spelling of the operand */ | |
280 | start = name = input_line_pointer; | |
281 | ||
282 | c = get_symbol_end (); | |
c84615bc | 283 | reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name); |
c6aa56bc C |
284 | |
285 | /* look to see if it's in the register table */ | |
286 | if (reg_number >= 0) | |
287 | { | |
288 | expressionP->X_op = O_register; | |
289 | expressionP->X_add_number = reg_number; | |
290 | ||
291 | /* make the rest nice */ | |
292 | expressionP->X_add_symbol = NULL; | |
293 | expressionP->X_op_symbol = NULL; | |
294 | *input_line_pointer = c; /* put back the delimiting char */ | |
295 | return true; | |
296 | } | |
297 | else | |
298 | { | |
299 | /* reset the line as if we had not done anything */ | |
300 | *input_line_pointer = c; /* put back the delimiting char */ | |
301 | input_line_pointer = start; /* reset input_line pointer */ | |
302 | return false; | |
303 | } | |
304 | } | |
305 | ||
c9f1b2d9 JL |
306 | /* Summary of cc_name(). |
307 | * | |
308 | * in: Input_line_pointer points to 1st char of operand. | |
309 | * | |
310 | * out: A expressionS. | |
311 | * The operand may have been a register: in this case, X_op == O_register, | |
312 | * X_add_number is set to the register number, and truth is returned. | |
313 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
314 | * its original state. | |
315 | */ | |
316 | static boolean | |
317 | cc_name (expressionP) | |
318 | expressionS *expressionP; | |
319 | { | |
320 | int reg_number; | |
321 | char *name; | |
322 | char *start; | |
323 | char c; | |
324 | ||
325 | /* Find the spelling of the operand */ | |
326 | start = name = input_line_pointer; | |
327 | ||
328 | c = get_symbol_end (); | |
c84615bc | 329 | reg_number = reg_name_search (cc_names, CC_NAME_CNT, name); |
c9f1b2d9 JL |
330 | |
331 | /* look to see if it's in the register table */ | |
332 | if (reg_number >= 0) | |
333 | { | |
334 | expressionP->X_op = O_constant; | |
335 | expressionP->X_add_number = reg_number; | |
336 | ||
337 | /* make the rest nice */ | |
338 | expressionP->X_add_symbol = NULL; | |
339 | expressionP->X_op_symbol = NULL; | |
340 | *input_line_pointer = c; /* put back the delimiting char */ | |
341 | return true; | |
342 | } | |
343 | else | |
344 | { | |
345 | /* reset the line as if we had not done anything */ | |
346 | *input_line_pointer = c; /* put back the delimiting char */ | |
347 | input_line_pointer = start; /* reset input_line pointer */ | |
348 | return false; | |
349 | } | |
350 | } | |
351 | ||
c6aa56bc C |
352 | void |
353 | md_show_usage (stream) | |
354 | FILE *stream; | |
355 | { | |
356 | fprintf(stream, "V850 options:\n\ | |
357 | none yet\n"); | |
358 | } | |
359 | ||
360 | int | |
361 | md_parse_option (c, arg) | |
362 | int c; | |
363 | char *arg; | |
364 | { | |
365 | return 0; | |
366 | } | |
367 | ||
368 | symbolS * | |
369 | md_undefined_symbol (name) | |
370 | char *name; | |
371 | { | |
372 | return 0; | |
373 | } | |
374 | ||
375 | char * | |
376 | md_atof (type, litp, sizep) | |
377 | int type; | |
378 | char *litp; | |
379 | int *sizep; | |
380 | { | |
381 | int prec; | |
382 | LITTLENUM_TYPE words[4]; | |
383 | char *t; | |
384 | int i; | |
385 | ||
386 | switch (type) | |
387 | { | |
388 | case 'f': | |
389 | prec = 2; | |
390 | break; | |
391 | ||
392 | case 'd': | |
393 | prec = 4; | |
394 | break; | |
395 | ||
396 | default: | |
397 | *sizep = 0; | |
398 | return "bad call to md_atof"; | |
399 | } | |
400 | ||
401 | t = atof_ieee (input_line_pointer, type, words); | |
402 | if (t) | |
403 | input_line_pointer = t; | |
404 | ||
405 | *sizep = prec * 2; | |
406 | ||
407 | for (i = prec - 1; i >= 0; i--) | |
408 | { | |
409 | md_number_to_chars (litp, (valueT) words[i], 2); | |
410 | litp += 2; | |
411 | } | |
412 | ||
413 | return NULL; | |
414 | } | |
415 | ||
416 | ||
a334533c | 417 | /* Very gross. */ |
c6aa56bc C |
418 | void |
419 | md_convert_frag (abfd, sec, fragP) | |
420 | bfd *abfd; | |
421 | asection *sec; | |
422 | fragS *fragP; | |
423 | { | |
a334533c JL |
424 | subseg_change (sec, 0); |
425 | if (fragP->fr_subtype == 0) | |
426 | { | |
2385d90a JL |
427 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, |
428 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode); | |
a334533c | 429 | fragP->fr_var = 0; |
bc49fab8 | 430 | fragP->fr_fix += 2; |
a334533c JL |
431 | } |
432 | else if (fragP->fr_subtype == 1) | |
433 | { | |
a334533c JL |
434 | /* Reverse the condition of the first branch. */ |
435 | fragP->fr_literal[0] &= 0xf7; | |
436 | /* Mask off all the displacement bits. */ | |
437 | fragP->fr_literal[0] &= 0x8f; | |
438 | fragP->fr_literal[1] &= 0x07; | |
439 | /* Now set the displacement bits so that we branch | |
440 | around the unconditional branch. */ | |
441 | fragP->fr_literal[0] |= 0x30; | |
442 | ||
443 | /* Now create the unconditional branch + fixup to the final | |
444 | target. */ | |
445 | md_number_to_chars (&fragP->fr_literal[2], 0x00000780, 4); | |
2385d90a | 446 | fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, |
a334533c | 447 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode + 1); |
2385d90a JL |
448 | fragP->fr_var = 0; |
449 | fragP->fr_fix += 6; | |
a334533c JL |
450 | } |
451 | else | |
452 | abort (); | |
c6aa56bc C |
453 | } |
454 | ||
455 | valueT | |
456 | md_section_align (seg, addr) | |
457 | asection *seg; | |
458 | valueT addr; | |
459 | { | |
460 | int align = bfd_get_section_alignment (stdoutput, seg); | |
461 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
462 | } | |
463 | ||
464 | void | |
465 | md_begin () | |
466 | { | |
467 | char *prev_name = ""; | |
468 | register const struct v850_opcode *op; | |
c6aa56bc C |
469 | |
470 | v850_hash = hash_new(); | |
471 | ||
472 | /* Insert unique names into hash table. The V850 instruction set | |
473 | has many identical opcode names that have different opcodes based | |
474 | on the operands. This hash table then provides a quick index to | |
475 | the first opcode with a particular name in the opcode table. */ | |
476 | ||
477 | op = v850_opcodes; | |
05631de2 | 478 | while (op->name) |
c6aa56bc C |
479 | { |
480 | if (strcmp (prev_name, op->name)) | |
481 | { | |
482 | prev_name = (char *) op->name; | |
483 | hash_insert (v850_hash, op->name, (char *) op); | |
484 | } | |
05631de2 | 485 | op++; |
c6aa56bc C |
486 | } |
487 | } | |
488 | ||
c84615bc C |
489 | static bfd_reloc_code_real_type |
490 | v850_reloc_prefix() | |
c6aa56bc | 491 | { |
c84615bc C |
492 | if (strncmp(input_line_pointer, "hi0(", 4) == 0) |
493 | { | |
d3bbd9dc | 494 | input_line_pointer += 3; |
c84615bc C |
495 | return BFD_RELOC_HI16; |
496 | } | |
497 | if (strncmp(input_line_pointer, "hi(", 3) == 0) | |
498 | { | |
d3bbd9dc | 499 | input_line_pointer += 2; |
c84615bc C |
500 | return BFD_RELOC_HI16_S; |
501 | } | |
502 | if (strncmp (input_line_pointer, "lo(", 3) == 0) | |
503 | { | |
d3bbd9dc | 504 | input_line_pointer += 2; |
c84615bc C |
505 | return BFD_RELOC_LO16; |
506 | } | |
c6aa56bc | 507 | |
548ddc71 JL |
508 | if (strncmp (input_line_pointer, "sdaoff(", 7) == 0) |
509 | { | |
d3bbd9dc | 510 | input_line_pointer += 6; |
548ddc71 JL |
511 | return BFD_RELOC_V850_SDA_OFFSET; |
512 | } | |
513 | ||
514 | if (strncmp (input_line_pointer, "zdaoff(", 7) == 0) | |
515 | { | |
d3bbd9dc | 516 | input_line_pointer += 6; |
548ddc71 JL |
517 | return BFD_RELOC_V850_ZDA_OFFSET; |
518 | } | |
519 | ||
520 | if (strncmp (input_line_pointer, "tdaoff(", 7) == 0) | |
521 | { | |
d3bbd9dc | 522 | input_line_pointer += 6; |
548ddc71 JL |
523 | return BFD_RELOC_V850_TDA_OFFSET; |
524 | } | |
525 | ||
d3bbd9dc JL |
526 | /* Disgusting */ |
527 | if (strncmp(input_line_pointer, "(hi0(", 5) == 0) | |
528 | { | |
529 | input_line_pointer += 4; | |
530 | return BFD_RELOC_HI16; | |
531 | } | |
532 | if (strncmp(input_line_pointer, "(hi(", 4) == 0) | |
533 | { | |
534 | input_line_pointer += 3; | |
535 | return BFD_RELOC_HI16_S; | |
536 | } | |
537 | if (strncmp (input_line_pointer, "(lo(", 4) == 0) | |
538 | { | |
539 | input_line_pointer += 3; | |
540 | return BFD_RELOC_LO16; | |
541 | } | |
542 | ||
543 | if (strncmp (input_line_pointer, "(sdaoff(", 8) == 0) | |
544 | { | |
545 | input_line_pointer += 7; | |
546 | return BFD_RELOC_V850_SDA_OFFSET; | |
547 | } | |
548 | ||
549 | if (strncmp (input_line_pointer, "(zdaoff(", 8) == 0) | |
550 | { | |
551 | input_line_pointer += 7; | |
552 | return BFD_RELOC_V850_ZDA_OFFSET; | |
553 | } | |
554 | ||
555 | if (strncmp (input_line_pointer, "(tdaoff(", 8) == 0) | |
556 | { | |
557 | input_line_pointer += 7; | |
558 | return BFD_RELOC_V850_TDA_OFFSET; | |
559 | } | |
c84615bc C |
560 | |
561 | return BFD_RELOC_UNUSED; | |
562 | } | |
c6aa56bc | 563 | |
c6aa56bc C |
564 | void |
565 | md_assemble (str) | |
566 | char *str; | |
567 | { | |
568 | char *s; | |
569 | struct v850_opcode *opcode; | |
570 | struct v850_opcode *next_opcode; | |
571 | const unsigned char *opindex_ptr; | |
a334533c | 572 | int next_opindex, relaxable; |
8ea15b86 | 573 | unsigned long insn, insn_size; |
c6aa56bc C |
574 | char *f; |
575 | int i; | |
c6aa56bc | 576 | int match; |
c84615bc | 577 | bfd_reloc_code_real_type reloc; |
c6aa56bc | 578 | |
c6aa56bc C |
579 | /* Get the opcode. */ |
580 | for (s = str; *s != '\0' && ! isspace (*s); s++) | |
581 | ; | |
582 | if (*s != '\0') | |
583 | *s++ = '\0'; | |
584 | ||
585 | /* find the first opcode with the proper name */ | |
586 | opcode = (struct v850_opcode *)hash_find (v850_hash, str); | |
587 | if (opcode == NULL) | |
588 | { | |
589 | as_bad ("Unrecognized opcode: `%s'", str); | |
590 | return; | |
591 | } | |
592 | ||
593 | str = s; | |
594 | while (isspace (*str)) | |
595 | ++str; | |
596 | ||
597 | input_line_pointer = str; | |
598 | ||
1510cd39 | 599 | for(;;) |
c6aa56bc | 600 | { |
1510cd39 C |
601 | const char *errmsg = NULL; |
602 | ||
a334533c | 603 | relaxable = 0; |
1510cd39 C |
604 | fc = 0; |
605 | match = 0; | |
606 | next_opindex = 0; | |
d5974c57 | 607 | insn = opcode->opcode; |
1510cd39 | 608 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
c6aa56bc | 609 | { |
1510cd39 C |
610 | const struct v850_operand *operand; |
611 | char *hold; | |
612 | expressionS ex; | |
c6aa56bc | 613 | |
1510cd39 | 614 | if (next_opindex == 0) |
c6aa56bc | 615 | { |
1510cd39 C |
616 | operand = &v850_operands[*opindex_ptr]; |
617 | } | |
618 | else | |
619 | { | |
620 | operand = &v850_operands[next_opindex]; | |
621 | next_opindex = 0; | |
c6aa56bc C |
622 | } |
623 | ||
1510cd39 C |
624 | errmsg = NULL; |
625 | ||
626 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']') | |
627 | ++str; | |
628 | ||
a334533c JL |
629 | if (operand->flags & V850_OPERAND_RELAX) |
630 | relaxable = 1; | |
631 | ||
1510cd39 C |
632 | /* Gather the operand. */ |
633 | hold = input_line_pointer; | |
634 | input_line_pointer = str; | |
635 | ||
c84615bc C |
636 | |
637 | /* lo(), hi(), hi0(), etc... */ | |
638 | if ((reloc = v850_reloc_prefix()) != BFD_RELOC_UNUSED) | |
639 | { | |
640 | expression(&ex); | |
641 | ||
c84615bc C |
642 | if (ex.X_op == O_constant) |
643 | { | |
644 | switch (reloc) | |
645 | { | |
646 | case BFD_RELOC_LO16: | |
d3bbd9dc JL |
647 | { |
648 | /* Truncate, then sign extend the value. */ | |
649 | int temp = ex.X_add_number & 0xffff; | |
650 | ||
651 | /* XXX Assumes 32bit ints! */ | |
652 | temp = (temp << 16) >> 16; | |
653 | ex.X_add_number = temp; | |
654 | break; | |
655 | } | |
c84615bc C |
656 | |
657 | case BFD_RELOC_HI16: | |
658 | ex.X_add_number = ((ex.X_add_number >> 16) & 0xffff); | |
659 | break; | |
660 | ||
661 | case BFD_RELOC_HI16_S: | |
662 | ex.X_add_number = ((ex.X_add_number >> 16) & 0xffff) | |
663 | + ((ex.X_add_number >> 15) & 1); | |
664 | break; | |
f964b01d JL |
665 | |
666 | default: | |
667 | break; | |
c84615bc C |
668 | } |
669 | ||
670 | insn = v850_insert_operand (insn, operand, ex.X_add_number, | |
671 | (char *) NULL, 0); | |
672 | } | |
673 | else | |
674 | { | |
675 | if (fc > MAX_INSN_FIXUPS) | |
676 | as_fatal ("too many fixups"); | |
677 | ||
47bfb6fc JL |
678 | /* Adjust any offsets for sst.{h,w}/sld.{h,w} instructions */ |
679 | if (operand->flags & V850_OPERAND_ADJUST_SHORT_MEMORY) | |
680 | ex.X_add_number >>= 1; | |
681 | ||
c84615bc C |
682 | fixups[fc].exp = ex; |
683 | fixups[fc].opindex = *opindex_ptr; | |
684 | fixups[fc].reloc = reloc; | |
685 | fc++; | |
686 | } | |
687 | } | |
688 | else | |
689 | { | |
a334533c | 690 | if ((operand->flags & V850_OPERAND_REG) != 0) |
c6aa56bc | 691 | { |
a334533c JL |
692 | if (!register_name(&ex)) |
693 | { | |
694 | errmsg = "invalid register name"; | |
695 | goto error; | |
696 | } | |
c6aa56bc | 697 | } |
a334533c | 698 | else if ((operand->flags & V850_OPERAND_SRG) != 0) |
0e8f9bd1 | 699 | { |
a334533c JL |
700 | if (!system_register_name(&ex)) |
701 | { | |
702 | errmsg = "invalid system register name"; | |
703 | goto error; | |
704 | } | |
0e8f9bd1 | 705 | } |
a334533c | 706 | else if ((operand->flags & V850_OPERAND_EP) != 0) |
88b47a85 | 707 | { |
a334533c JL |
708 | char *start = input_line_pointer; |
709 | char c = get_symbol_end (); | |
710 | if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0) | |
711 | { | |
712 | /* Put things back the way we found them. */ | |
713 | *input_line_pointer = c; | |
714 | input_line_pointer = start; | |
715 | errmsg = "expected EP register"; | |
716 | goto error; | |
717 | } | |
88b47a85 | 718 | *input_line_pointer = c; |
a334533c JL |
719 | str = input_line_pointer; |
720 | input_line_pointer = hold; | |
721 | ||
722 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']') | |
723 | ++str; | |
724 | continue; | |
725 | } | |
726 | else if ((operand->flags & V850_OPERAND_CC) != 0) | |
727 | { | |
728 | if (!cc_name(&ex)) | |
729 | { | |
730 | errmsg = "invalid condition code name"; | |
731 | goto error; | |
732 | } | |
733 | } | |
734 | else if (register_name (&ex) | |
735 | && (operand->flags & V850_OPERAND_REG) == 0) | |
736 | { | |
737 | errmsg = "syntax error: register not expected"; | |
88b47a85 JL |
738 | goto error; |
739 | } | |
a334533c JL |
740 | else if (system_register_name (&ex) |
741 | && (operand->flags & V850_OPERAND_SRG) == 0) | |
c9f1b2d9 | 742 | { |
a334533c | 743 | errmsg = "syntax error: system register not expected"; |
c9f1b2d9 JL |
744 | goto error; |
745 | } | |
a334533c JL |
746 | else if (cc_name (&ex) |
747 | && (operand->flags & V850_OPERAND_CC) == 0) | |
1510cd39 | 748 | { |
a334533c | 749 | errmsg = "syntax error: condition code not expected"; |
1510cd39 C |
750 | goto error; |
751 | } | |
a334533c JL |
752 | else |
753 | { | |
754 | expression(&ex); | |
755 | } | |
756 | ||
757 | switch (ex.X_op) | |
758 | { | |
759 | case O_illegal: | |
760 | errmsg = "illegal operand"; | |
761 | goto error; | |
762 | case O_absent: | |
763 | errmsg = "missing operand"; | |
764 | goto error; | |
765 | case O_register: | |
766 | if ((operand->flags & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0) | |
767 | { | |
768 | errmsg = "invalid operand"; | |
769 | goto error; | |
770 | } | |
1510cd39 | 771 | |
a334533c JL |
772 | insn = v850_insert_operand (insn, operand, ex.X_add_number, |
773 | (char *) NULL, 0); | |
774 | break; | |
775 | ||
776 | case O_constant: | |
777 | insn = v850_insert_operand (insn, operand, ex.X_add_number, | |
778 | (char *) NULL, 0); | |
779 | break; | |
780 | ||
781 | default: | |
782 | /* We need to generate a fixup for this expression. */ | |
783 | if (fc >= MAX_INSN_FIXUPS) | |
784 | as_fatal ("too many fixups"); | |
785 | fixups[fc].exp = ex; | |
786 | fixups[fc].opindex = *opindex_ptr; | |
787 | fixups[fc].reloc = BFD_RELOC_UNUSED; | |
788 | ++fc; | |
789 | break; | |
790 | } | |
1510cd39 | 791 | |
c84615bc C |
792 | } |
793 | ||
794 | str = input_line_pointer; | |
795 | input_line_pointer = hold; | |
796 | ||
d3bbd9dc JL |
797 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']' |
798 | || *str == ')') | |
1510cd39 C |
799 | ++str; |
800 | } | |
801 | match = 1; | |
802 | ||
803 | error: | |
804 | if (match == 0) | |
805 | { | |
806 | next_opcode = opcode + 1; | |
807 | if (next_opcode->opcode != 0 && !strcmp(next_opcode->name, opcode->name)) | |
808 | { | |
809 | opcode = next_opcode; | |
810 | continue; | |
811 | } | |
812 | ||
813 | as_bad ("%s", errmsg); | |
814 | return; | |
815 | } | |
816 | break; | |
817 | } | |
818 | ||
c6aa56bc C |
819 | while (isspace (*str)) |
820 | ++str; | |
821 | ||
822 | if (*str != '\0') | |
823 | as_bad ("junk at end of line: `%s'", str); | |
1510cd39 C |
824 | |
825 | input_line_pointer = str; | |
c6aa56bc | 826 | |
f964b01d | 827 | /* Write out the instruction. |
c84615bc | 828 | |
f964b01d | 829 | Four byte insns have an opcode with the two high bits on. */ |
a334533c JL |
830 | if (relaxable && fc > 0) |
831 | { | |
832 | f = frag_var (rs_machine_dependent, 6, 4, 0, | |
47bfb6fc JL |
833 | fixups[0].exp.X_add_symbol, |
834 | fixups[0].exp.X_add_number, | |
835 | (char *)fixups[0].opindex); | |
a334533c JL |
836 | insn_size = 2; |
837 | md_number_to_chars (f, insn, insn_size); | |
838 | md_number_to_chars (f + 2, 0, 4); | |
839 | fc = 0; | |
840 | } | |
841 | else if ((insn & 0x0600) == 0x0600) | |
842 | { | |
843 | insn_size = 4; | |
844 | f = frag_more (insn_size); | |
845 | md_number_to_chars (f, insn, insn_size); | |
846 | } | |
f964b01d | 847 | else |
a334533c JL |
848 | { |
849 | insn_size = 2; | |
850 | f = frag_more (insn_size); | |
851 | md_number_to_chars (f, insn, insn_size); | |
852 | } | |
c84615bc C |
853 | |
854 | /* Create any fixups. At this point we do not use a | |
855 | bfd_reloc_code_real_type, but instead just use the | |
856 | BFD_RELOC_UNUSED plus the operand index. This lets us easily | |
857 | handle fixups for any operand type, although that is admittedly | |
858 | not a very exciting feature. We pick a BFD reloc type in | |
859 | md_apply_fix. */ | |
860 | for (i = 0; i < fc; i++) | |
861 | { | |
862 | const struct v850_operand *operand; | |
863 | ||
864 | operand = &v850_operands[fixups[i].opindex]; | |
865 | if (fixups[i].reloc != BFD_RELOC_UNUSED) | |
866 | { | |
867 | reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); | |
868 | int size; | |
869 | int offset; | |
870 | fixS *fixP; | |
871 | ||
872 | if (!reloc_howto) | |
873 | abort(); | |
874 | ||
875 | size = bfd_get_reloc_size (reloc_howto); | |
8ea15b86 JL |
876 | |
877 | /* The "size" of a TDA_OFFSET reloc varies depending | |
878 | on what kind of instruction it's used in! */ | |
879 | if (reloc_howto->type == 11 && insn_size > 2) | |
880 | size = 2; | |
c84615bc C |
881 | |
882 | if (size < 1 || size > 4) | |
883 | abort(); | |
884 | ||
8ea15b86 | 885 | offset = 4 - size; |
c84615bc C |
886 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, size, |
887 | &fixups[i].exp, | |
888 | reloc_howto->pc_relative, | |
889 | fixups[i].reloc); | |
890 | } | |
891 | else | |
892 | { | |
893 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, | |
894 | &fixups[i].exp, | |
895 | 1 /* FIXME: V850_OPERAND_RELATIVE ??? */, | |
896 | ((bfd_reloc_code_real_type) | |
897 | (fixups[i].opindex + (int) BFD_RELOC_UNUSED))); | |
898 | } | |
899 | } | |
c6aa56bc C |
900 | } |
901 | ||
902 | ||
903 | /* if while processing a fixup, a reloc really needs to be created */ | |
904 | /* then it is done here */ | |
905 | ||
906 | arelent * | |
907 | tc_gen_reloc (seg, fixp) | |
908 | asection *seg; | |
909 | fixS *fixp; | |
910 | { | |
911 | arelent *reloc; | |
47bfb6fc | 912 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
c6aa56bc C |
913 | reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym; |
914 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
915 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
916 | if (reloc->howto == (reloc_howto_type *) NULL) | |
917 | { | |
918 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
919 | "reloc %d not supported by object file format", (int)fixp->fx_r_type); | |
920 | return NULL; | |
921 | } | |
922 | reloc->addend = fixp->fx_addnumber; | |
923 | /* printf("tc_gen_reloc: addr=%x addend=%x\n", reloc->address, reloc->addend); */ | |
924 | return reloc; | |
925 | } | |
926 | ||
a334533c | 927 | /* Assume everything will fit in two bytes, then expand as necessary. */ |
c6aa56bc C |
928 | int |
929 | md_estimate_size_before_relax (fragp, seg) | |
930 | fragS *fragp; | |
931 | asection *seg; | |
932 | { | |
a334533c JL |
933 | fragp->fr_var = 4; |
934 | return 2; | |
c6aa56bc C |
935 | } |
936 | ||
a334533c | 937 | |
c6aa56bc | 938 | long |
0f8e50bb | 939 | md_pcrel_from (fixp) |
c6aa56bc | 940 | fixS *fixp; |
c6aa56bc | 941 | { |
f964b01d JL |
942 | /* If the symbol is undefined, or in a section other than our own, |
943 | then let the linker figure it out. */ | |
0f8e50bb | 944 | if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy)) |
c84615bc C |
945 | { |
946 | /* The symbol is undefined. Let the linker figure it out. */ | |
947 | return 0; | |
948 | } | |
949 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
c6aa56bc C |
950 | } |
951 | ||
952 | int | |
953 | md_apply_fix3 (fixp, valuep, seg) | |
954 | fixS *fixp; | |
955 | valueT *valuep; | |
956 | segT seg; | |
957 | { | |
c6aa56bc C |
958 | valueT value; |
959 | char *where; | |
c6aa56bc C |
960 | |
961 | if (fixp->fx_addsy == (symbolS *) NULL) | |
962 | { | |
963 | value = *valuep; | |
964 | fixp->fx_done = 1; | |
965 | } | |
966 | else if (fixp->fx_pcrel) | |
967 | value = *valuep; | |
968 | else | |
969 | { | |
970 | value = fixp->fx_offset; | |
971 | if (fixp->fx_subsy != (symbolS *) NULL) | |
972 | { | |
973 | if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) | |
974 | value -= S_GET_VALUE (fixp->fx_subsy); | |
975 | else | |
976 | { | |
977 | /* We don't actually support subtracting a symbol. */ | |
978 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
979 | "expression too complex"); | |
980 | } | |
981 | } | |
982 | } | |
c6aa56bc | 983 | |
c84615bc | 984 | /* printf("md_apply_fix: value=0x%x type=%d\n", value, fixp->fx_r_type); */ |
c6aa56bc | 985 | |
c84615bc C |
986 | if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED) |
987 | { | |
988 | int opindex; | |
989 | const struct v850_operand *operand; | |
990 | char *where; | |
991 | unsigned long insn; | |
992 | ||
993 | opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED; | |
994 | operand = &v850_operands[opindex]; | |
995 | ||
996 | /* Fetch the instruction, insert the fully resolved operand | |
74dd0c07 JL |
997 | value, and stuff the instruction back again. |
998 | ||
999 | Note the instruction has been stored in little endian | |
1000 | format! */ | |
c84615bc | 1001 | where = fixp->fx_frag->fr_literal + fixp->fx_where; |
74dd0c07 JL |
1002 | |
1003 | insn = bfd_getl32((unsigned char *) where); | |
c84615bc C |
1004 | insn = v850_insert_operand (insn, operand, (offsetT) value, |
1005 | fixp->fx_file, fixp->fx_line); | |
74dd0c07 | 1006 | bfd_putl32((bfd_vma) insn, (unsigned char *) where); |
c84615bc C |
1007 | |
1008 | if (fixp->fx_done) | |
1009 | { | |
1010 | /* Nothing else to do here. */ | |
1011 | return 1; | |
1012 | } | |
c6aa56bc | 1013 | |
c84615bc C |
1014 | /* Determine a BFD reloc value based on the operand information. |
1015 | We are only prepared to turn a few of the operands into relocs. */ | |
c6aa56bc | 1016 | |
c84615bc C |
1017 | if (operand->bits == 22) |
1018 | fixp->fx_r_type = BFD_RELOC_V850_22_PCREL; | |
1019 | else if (operand->bits == 9) | |
1020 | fixp->fx_r_type = BFD_RELOC_V850_9_PCREL; | |
1021 | else | |
1022 | { | |
1023 | as_bad_where(fixp->fx_file, fixp->fx_line, | |
1024 | "unresolved expression that must be resolved"); | |
1025 | fixp->fx_done = 1; | |
1026 | return 1; | |
1027 | } | |
1028 | } | |
2d56269e JL |
1029 | else if (fixp->fx_done) |
1030 | { | |
1031 | /* We still have to insert the value into memory! */ | |
1032 | where = fixp->fx_frag->fr_literal + fixp->fx_where; | |
1033 | if (fixp->fx_size == 1) | |
1034 | *where = value & 0xff; | |
1035 | if (fixp->fx_size == 2) | |
1036 | bfd_putl16(value & 0xffff, (unsigned char *) where); | |
1037 | if (fixp->fx_size == 4) | |
1038 | bfd_putl32(value, (unsigned char *) where); | |
1039 | } | |
c6aa56bc C |
1040 | |
1041 | fixp->fx_addnumber = value; | |
1042 | return 1; | |
c6aa56bc C |
1043 | } |
1044 | ||
1045 | \f | |
1046 | /* Insert an operand value into an instruction. */ | |
1047 | ||
1048 | static unsigned long | |
1049 | v850_insert_operand (insn, operand, val, file, line) | |
1050 | unsigned long insn; | |
1051 | const struct v850_operand *operand; | |
1052 | offsetT val; | |
1053 | char *file; | |
1054 | unsigned int line; | |
1055 | { | |
c84615bc | 1056 | if (operand->bits != 16) |
c6aa56bc C |
1057 | { |
1058 | long min, max; | |
1059 | offsetT test; | |
1060 | ||
1510cd39 | 1061 | if ((operand->flags & V850_OPERAND_SIGNED) != 0) |
c6aa56bc | 1062 | { |
c6aa56bc C |
1063 | max = (1 << (operand->bits - 1)) - 1; |
1064 | min = - (1 << (operand->bits - 1)); | |
1065 | } | |
1066 | else | |
c6aa56bc C |
1067 | { |
1068 | max = (1 << operand->bits) - 1; | |
1069 | min = 0; | |
1070 | } | |
1071 | ||
f964b01d | 1072 | test = val; |
c6aa56bc C |
1073 | |
1074 | ||
1075 | if (test < (offsetT) min || test > (offsetT) max) | |
1076 | { | |
1077 | const char *err = | |
1078 | "operand out of range (%s not between %ld and %ld)"; | |
1079 | char buf[100]; | |
1080 | ||
1081 | sprint_value (buf, test); | |
1082 | if (file == (char *) NULL) | |
1083 | as_warn (err, buf, min, max); | |
1084 | else | |
1085 | as_warn_where (file, line, err, buf, min, max); | |
1086 | } | |
1087 | } | |
1088 | ||
74dd0c07 JL |
1089 | if (operand->insert) |
1090 | { | |
1091 | const char *message = NULL; | |
f964b01d | 1092 | insn = (*operand->insert) (insn, val, &message); |
74dd0c07 JL |
1093 | if (message != NULL) |
1094 | { | |
1095 | if (file == (char *) NULL) | |
1096 | as_warn (message); | |
1097 | else | |
1098 | as_warn_where (file, line, message); | |
1099 | } | |
1100 | } | |
1101 | else | |
1102 | insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift); | |
c6aa56bc C |
1103 | return insn; |
1104 | } | |
10fba7f1 JL |
1105 | |
1106 | /* Parse a cons expression. We have to handle hi(), lo(), etc | |
1107 | on the v850. */ | |
1108 | void | |
1109 | parse_cons_expression_v850 (exp) | |
1110 | expressionS *exp; | |
1111 | { | |
1112 | /* See if there's a reloc prefix like hi() we have to handle. */ | |
1113 | hold_cons_reloc = v850_reloc_prefix (); | |
1114 | ||
1115 | /* Do normal expression parsing. */ | |
1116 | expression (exp); | |
10fba7f1 JL |
1117 | } |
1118 | ||
1119 | /* Create a fixup for a cons expression. If parse_cons_expression_v850 | |
1120 | found a reloc prefix, then we use that reloc, else we choose an | |
1121 | appropriate one based on the size of the expression. */ | |
1122 | void | |
1123 | cons_fix_new_v850 (frag, where, size, exp) | |
1124 | fragS *frag; | |
1125 | int where; | |
1126 | int size; | |
1127 | expressionS *exp; | |
1128 | { | |
1129 | if (hold_cons_reloc == BFD_RELOC_UNUSED) | |
1130 | { | |
1131 | if (size == 4) | |
1132 | hold_cons_reloc = BFD_RELOC_32; | |
1133 | if (size == 2) | |
1134 | hold_cons_reloc = BFD_RELOC_16; | |
1135 | if (size == 1) | |
1136 | hold_cons_reloc = BFD_RELOC_8; | |
1137 | } | |
1138 | ||
1139 | if (exp != NULL) | |
1140 | fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc); | |
1141 | else | |
1142 | fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc); | |
1143 | } |