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