Commit | Line | Data |
---|---|---|
87e6d782 NC |
1 | /* Instruction building/extraction support for openrisc. -*- C -*- |
2 | ||
47b0e7ad NC |
3 | THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator. |
4 | - the resultant file is machine generated, cgen-ibld.in isn't | |
87e6d782 | 5 | |
47b0e7ad NC |
6 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005 |
7 | Free Software Foundation, Inc. | |
87e6d782 | 8 | |
47b0e7ad | 9 | This file is part of the GNU Binutils and GDB, the GNU debugger. |
87e6d782 | 10 | |
47b0e7ad NC |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
87e6d782 | 15 | |
47b0e7ad NC |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
87e6d782 | 20 | |
47b0e7ad NC |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software Foundation, Inc., | |
23 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
87e6d782 NC |
24 | |
25 | /* ??? Eventually more and more of this stuff can go to cpu-independent files. | |
26 | Keep that in mind. */ | |
27 | ||
28 | #include "sysdep.h" | |
87e6d782 NC |
29 | #include <stdio.h> |
30 | #include "ansidecl.h" | |
31 | #include "dis-asm.h" | |
32 | #include "bfd.h" | |
33 | #include "symcat.h" | |
34 | #include "openrisc-desc.h" | |
35 | #include "openrisc-opc.h" | |
36 | #include "opintl.h" | |
37111cc7 | 37 | #include "safe-ctype.h" |
87e6d782 | 38 | |
47b0e7ad | 39 | #undef min |
87e6d782 | 40 | #define min(a,b) ((a) < (b) ? (a) : (b)) |
47b0e7ad | 41 | #undef max |
87e6d782 NC |
42 | #define max(a,b) ((a) > (b) ? (a) : (b)) |
43 | ||
44 | /* Used by the ifield rtx function. */ | |
45 | #define FLD(f) (fields->f) | |
46 | ||
47 | static const char * insert_normal | |
ffead7ae MM |
48 | (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int, |
49 | unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR); | |
87e6d782 | 50 | static const char * insert_insn_normal |
ffead7ae MM |
51 | (CGEN_CPU_DESC, const CGEN_INSN *, |
52 | CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); | |
87e6d782 | 53 | static int extract_normal |
ffead7ae MM |
54 | (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, |
55 | unsigned int, unsigned int, unsigned int, unsigned int, | |
56 | unsigned int, unsigned int, bfd_vma, long *); | |
87e6d782 | 57 | static int extract_insn_normal |
ffead7ae MM |
58 | (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *, |
59 | CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); | |
0e2ee3ca | 60 | #if CGEN_INT_INSN_P |
87e6d782 | 61 | static void put_insn_int_value |
ffead7ae | 62 | (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT); |
0e2ee3ca NC |
63 | #endif |
64 | #if ! CGEN_INT_INSN_P | |
65 | static CGEN_INLINE void insert_1 | |
ffead7ae | 66 | (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *); |
0e2ee3ca | 67 | static CGEN_INLINE int fill_cache |
ffead7ae | 68 | (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma); |
0e2ee3ca | 69 | static CGEN_INLINE long extract_1 |
ffead7ae | 70 | (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma); |
0e2ee3ca | 71 | #endif |
87e6d782 NC |
72 | \f |
73 | /* Operand insertion. */ | |
74 | ||
75 | #if ! CGEN_INT_INSN_P | |
76 | ||
77 | /* Subroutine of insert_normal. */ | |
78 | ||
79 | static CGEN_INLINE void | |
ffead7ae MM |
80 | insert_1 (CGEN_CPU_DESC cd, |
81 | unsigned long value, | |
82 | int start, | |
83 | int length, | |
84 | int word_length, | |
85 | unsigned char *bufp) | |
87e6d782 NC |
86 | { |
87 | unsigned long x,mask; | |
88 | int shift; | |
87e6d782 | 89 | |
0e2ee3ca | 90 | x = cgen_get_insn_value (cd, bufp, word_length); |
87e6d782 NC |
91 | |
92 | /* Written this way to avoid undefined behaviour. */ | |
93 | mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
94 | if (CGEN_INSN_LSB0_P) | |
95 | shift = (start + 1) - length; | |
96 | else | |
97 | shift = (word_length - (start + length)); | |
98 | x = (x & ~(mask << shift)) | ((value & mask) << shift); | |
99 | ||
0e2ee3ca | 100 | cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x); |
87e6d782 NC |
101 | } |
102 | ||
103 | #endif /* ! CGEN_INT_INSN_P */ | |
104 | ||
105 | /* Default insertion routine. | |
106 | ||
107 | ATTRS is a mask of the boolean attributes. | |
108 | WORD_OFFSET is the offset in bits from the start of the insn of the value. | |
109 | WORD_LENGTH is the length of the word in bits in which the value resides. | |
110 | START is the starting bit number in the word, architecture origin. | |
111 | LENGTH is the length of VALUE in bits. | |
112 | TOTAL_LENGTH is the total length of the insn in bits. | |
113 | ||
114 | The result is an error message or NULL if success. */ | |
115 | ||
116 | /* ??? This duplicates functionality with bfd's howto table and | |
117 | bfd_install_relocation. */ | |
118 | /* ??? This doesn't handle bfd_vma's. Create another function when | |
119 | necessary. */ | |
120 | ||
121 | static const char * | |
ffead7ae MM |
122 | insert_normal (CGEN_CPU_DESC cd, |
123 | long value, | |
124 | unsigned int attrs, | |
125 | unsigned int word_offset, | |
126 | unsigned int start, | |
127 | unsigned int length, | |
128 | unsigned int word_length, | |
129 | unsigned int total_length, | |
130 | CGEN_INSN_BYTES_PTR buffer) | |
87e6d782 NC |
131 | { |
132 | static char errbuf[100]; | |
133 | /* Written this way to avoid undefined behaviour. */ | |
134 | unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
135 | ||
136 | /* If LENGTH is zero, this operand doesn't contribute to the value. */ | |
137 | if (length == 0) | |
138 | return NULL; | |
139 | ||
87e6d782 NC |
140 | if (word_length > 32) |
141 | abort (); | |
142 | ||
143 | /* For architectures with insns smaller than the base-insn-bitsize, | |
144 | word_length may be too big. */ | |
145 | if (cd->min_insn_bitsize < cd->base_insn_bitsize) | |
146 | { | |
147 | if (word_offset == 0 | |
148 | && word_length > total_length) | |
149 | word_length = total_length; | |
150 | } | |
151 | ||
152 | /* Ensure VALUE will fit. */ | |
fc7bc883 RH |
153 | if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT)) |
154 | { | |
155 | long minval = - (1L << (length - 1)); | |
156 | unsigned long maxval = mask; | |
157 | ||
158 | if ((value > 0 && (unsigned long) value > maxval) | |
159 | || value < minval) | |
160 | { | |
161 | /* xgettext:c-format */ | |
162 | sprintf (errbuf, | |
163 | _("operand out of range (%ld not between %ld and %lu)"), | |
164 | value, minval, maxval); | |
165 | return errbuf; | |
166 | } | |
167 | } | |
168 | else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)) | |
87e6d782 NC |
169 | { |
170 | unsigned long maxval = mask; | |
171 | ||
172 | if ((unsigned long) value > maxval) | |
173 | { | |
174 | /* xgettext:c-format */ | |
175 | sprintf (errbuf, | |
176 | _("operand out of range (%lu not between 0 and %lu)"), | |
177 | value, maxval); | |
178 | return errbuf; | |
179 | } | |
180 | } | |
181 | else | |
182 | { | |
183 | if (! cgen_signed_overflow_ok_p (cd)) | |
184 | { | |
185 | long minval = - (1L << (length - 1)); | |
186 | long maxval = (1L << (length - 1)) - 1; | |
187 | ||
188 | if (value < minval || value > maxval) | |
189 | { | |
190 | sprintf | |
191 | /* xgettext:c-format */ | |
192 | (errbuf, _("operand out of range (%ld not between %ld and %ld)"), | |
193 | value, minval, maxval); | |
194 | return errbuf; | |
195 | } | |
196 | } | |
197 | } | |
198 | ||
199 | #if CGEN_INT_INSN_P | |
200 | ||
201 | { | |
202 | int shift; | |
203 | ||
204 | if (CGEN_INSN_LSB0_P) | |
205 | shift = (word_offset + start + 1) - length; | |
206 | else | |
207 | shift = total_length - (word_offset + start + length); | |
208 | *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift); | |
209 | } | |
210 | ||
211 | #else /* ! CGEN_INT_INSN_P */ | |
212 | ||
213 | { | |
214 | unsigned char *bufp = (unsigned char *) buffer + word_offset / 8; | |
215 | ||
216 | insert_1 (cd, value, start, length, word_length, bufp); | |
217 | } | |
218 | ||
219 | #endif /* ! CGEN_INT_INSN_P */ | |
220 | ||
221 | return NULL; | |
222 | } | |
223 | ||
224 | /* Default insn builder (insert handler). | |
225 | The instruction is recorded in CGEN_INT_INSN_P byte order (meaning | |
226 | that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is | |
227 | recorded in host byte order, otherwise BUFFER is an array of bytes | |
228 | and the value is recorded in target byte order). | |
229 | The result is an error message or NULL if success. */ | |
230 | ||
231 | static const char * | |
ffead7ae MM |
232 | insert_insn_normal (CGEN_CPU_DESC cd, |
233 | const CGEN_INSN * insn, | |
234 | CGEN_FIELDS * fields, | |
235 | CGEN_INSN_BYTES_PTR buffer, | |
236 | bfd_vma pc) | |
87e6d782 NC |
237 | { |
238 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
239 | unsigned long value; | |
240 | const CGEN_SYNTAX_CHAR_TYPE * syn; | |
241 | ||
242 | CGEN_INIT_INSERT (cd); | |
243 | value = CGEN_INSN_BASE_VALUE (insn); | |
244 | ||
245 | /* If we're recording insns as numbers (rather than a string of bytes), | |
246 | target byte order handling is deferred until later. */ | |
247 | ||
248 | #if CGEN_INT_INSN_P | |
249 | ||
250 | put_insn_int_value (cd, buffer, cd->base_insn_bitsize, | |
251 | CGEN_FIELDS_BITSIZE (fields), value); | |
252 | ||
253 | #else | |
254 | ||
0e2ee3ca NC |
255 | cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize, |
256 | (unsigned) CGEN_FIELDS_BITSIZE (fields)), | |
87e6d782 NC |
257 | value); |
258 | ||
259 | #endif /* ! CGEN_INT_INSN_P */ | |
260 | ||
261 | /* ??? It would be better to scan the format's fields. | |
262 | Still need to be able to insert a value based on the operand though; | |
263 | e.g. storing a branch displacement that got resolved later. | |
264 | Needs more thought first. */ | |
265 | ||
266 | for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn) | |
267 | { | |
268 | const char *errmsg; | |
269 | ||
270 | if (CGEN_SYNTAX_CHAR_P (* syn)) | |
271 | continue; | |
272 | ||
273 | errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn), | |
274 | fields, buffer, pc); | |
275 | if (errmsg) | |
276 | return errmsg; | |
277 | } | |
278 | ||
279 | return NULL; | |
280 | } | |
281 | ||
0e2ee3ca | 282 | #if CGEN_INT_INSN_P |
87e6d782 | 283 | /* Cover function to store an insn value into an integral insn. Must go here |
47b0e7ad | 284 | because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */ |
87e6d782 NC |
285 | |
286 | static void | |
ffead7ae MM |
287 | put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
288 | CGEN_INSN_BYTES_PTR buf, | |
289 | int length, | |
290 | int insn_length, | |
291 | CGEN_INSN_INT value) | |
87e6d782 NC |
292 | { |
293 | /* For architectures with insns smaller than the base-insn-bitsize, | |
294 | length may be too big. */ | |
295 | if (length > insn_length) | |
296 | *buf = value; | |
297 | else | |
298 | { | |
299 | int shift = insn_length - length; | |
300 | /* Written this way to avoid undefined behaviour. */ | |
301 | CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
47b0e7ad | 302 | |
87e6d782 NC |
303 | *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift); |
304 | } | |
305 | } | |
0e2ee3ca | 306 | #endif |
87e6d782 NC |
307 | \f |
308 | /* Operand extraction. */ | |
309 | ||
310 | #if ! CGEN_INT_INSN_P | |
311 | ||
312 | /* Subroutine of extract_normal. | |
313 | Ensure sufficient bytes are cached in EX_INFO. | |
314 | OFFSET is the offset in bytes from the start of the insn of the value. | |
315 | BYTES is the length of the needed value. | |
316 | Returns 1 for success, 0 for failure. */ | |
317 | ||
318 | static CGEN_INLINE int | |
ffead7ae MM |
319 | fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
320 | CGEN_EXTRACT_INFO *ex_info, | |
321 | int offset, | |
322 | int bytes, | |
323 | bfd_vma pc) | |
87e6d782 NC |
324 | { |
325 | /* It's doubtful that the middle part has already been fetched so | |
326 | we don't optimize that case. kiss. */ | |
0e2ee3ca | 327 | unsigned int mask; |
87e6d782 NC |
328 | disassemble_info *info = (disassemble_info *) ex_info->dis_info; |
329 | ||
330 | /* First do a quick check. */ | |
331 | mask = (1 << bytes) - 1; | |
332 | if (((ex_info->valid >> offset) & mask) == mask) | |
333 | return 1; | |
334 | ||
335 | /* Search for the first byte we need to read. */ | |
336 | for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) | |
337 | if (! (mask & ex_info->valid)) | |
338 | break; | |
339 | ||
340 | if (bytes) | |
341 | { | |
342 | int status; | |
343 | ||
344 | pc += offset; | |
345 | status = (*info->read_memory_func) | |
346 | (pc, ex_info->insn_bytes + offset, bytes, info); | |
347 | ||
348 | if (status != 0) | |
349 | { | |
350 | (*info->memory_error_func) (status, pc, info); | |
351 | return 0; | |
352 | } | |
353 | ||
354 | ex_info->valid |= ((1 << bytes) - 1) << offset; | |
355 | } | |
356 | ||
357 | return 1; | |
358 | } | |
359 | ||
360 | /* Subroutine of extract_normal. */ | |
361 | ||
362 | static CGEN_INLINE long | |
ffead7ae MM |
363 | extract_1 (CGEN_CPU_DESC cd, |
364 | CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, | |
365 | int start, | |
366 | int length, | |
367 | int word_length, | |
368 | unsigned char *bufp, | |
369 | bfd_vma pc ATTRIBUTE_UNUSED) | |
87e6d782 NC |
370 | { |
371 | unsigned long x; | |
372 | int shift; | |
47b0e7ad | 373 | |
e333d2c4 NC |
374 | x = cgen_get_insn_value (cd, bufp, word_length); |
375 | ||
87e6d782 NC |
376 | if (CGEN_INSN_LSB0_P) |
377 | shift = (start + 1) - length; | |
378 | else | |
379 | shift = (word_length - (start + length)); | |
380 | return x >> shift; | |
381 | } | |
382 | ||
383 | #endif /* ! CGEN_INT_INSN_P */ | |
384 | ||
385 | /* Default extraction routine. | |
386 | ||
387 | INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, | |
388 | or sometimes less for cases like the m32r where the base insn size is 32 | |
389 | but some insns are 16 bits. | |
390 | ATTRS is a mask of the boolean attributes. We only need `SIGNED', | |
391 | but for generality we take a bitmask of all of them. | |
392 | WORD_OFFSET is the offset in bits from the start of the insn of the value. | |
393 | WORD_LENGTH is the length of the word in bits in which the value resides. | |
394 | START is the starting bit number in the word, architecture origin. | |
395 | LENGTH is the length of VALUE in bits. | |
396 | TOTAL_LENGTH is the total length of the insn in bits. | |
397 | ||
398 | Returns 1 for success, 0 for failure. */ | |
399 | ||
400 | /* ??? The return code isn't properly used. wip. */ | |
401 | ||
402 | /* ??? This doesn't handle bfd_vma's. Create another function when | |
403 | necessary. */ | |
404 | ||
405 | static int | |
ffead7ae | 406 | extract_normal (CGEN_CPU_DESC cd, |
87e6d782 | 407 | #if ! CGEN_INT_INSN_P |
ffead7ae | 408 | CGEN_EXTRACT_INFO *ex_info, |
87e6d782 | 409 | #else |
ffead7ae | 410 | CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, |
87e6d782 | 411 | #endif |
ffead7ae MM |
412 | CGEN_INSN_INT insn_value, |
413 | unsigned int attrs, | |
414 | unsigned int word_offset, | |
415 | unsigned int start, | |
416 | unsigned int length, | |
417 | unsigned int word_length, | |
418 | unsigned int total_length, | |
87e6d782 | 419 | #if ! CGEN_INT_INSN_P |
ffead7ae | 420 | bfd_vma pc, |
87e6d782 | 421 | #else |
ffead7ae | 422 | bfd_vma pc ATTRIBUTE_UNUSED, |
87e6d782 | 423 | #endif |
ffead7ae | 424 | long *valuep) |
87e6d782 | 425 | { |
fc7bc883 | 426 | long value, mask; |
87e6d782 NC |
427 | |
428 | /* If LENGTH is zero, this operand doesn't contribute to the value | |
429 | so give it a standard value of zero. */ | |
430 | if (length == 0) | |
431 | { | |
432 | *valuep = 0; | |
433 | return 1; | |
434 | } | |
435 | ||
87e6d782 NC |
436 | if (word_length > 32) |
437 | abort (); | |
438 | ||
439 | /* For architectures with insns smaller than the insn-base-bitsize, | |
440 | word_length may be too big. */ | |
441 | if (cd->min_insn_bitsize < cd->base_insn_bitsize) | |
442 | { | |
443 | if (word_offset == 0 | |
444 | && word_length > total_length) | |
445 | word_length = total_length; | |
446 | } | |
447 | ||
fc7bc883 | 448 | /* Does the value reside in INSN_VALUE, and at the right alignment? */ |
87e6d782 | 449 | |
fc7bc883 | 450 | if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) |
87e6d782 NC |
451 | { |
452 | if (CGEN_INSN_LSB0_P) | |
453 | value = insn_value >> ((word_offset + start + 1) - length); | |
454 | else | |
455 | value = insn_value >> (total_length - ( word_offset + start + length)); | |
456 | } | |
457 | ||
458 | #if ! CGEN_INT_INSN_P | |
459 | ||
460 | else | |
461 | { | |
462 | unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; | |
463 | ||
464 | if (word_length > 32) | |
465 | abort (); | |
466 | ||
467 | if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) | |
468 | return 0; | |
469 | ||
470 | value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); | |
471 | } | |
472 | ||
473 | #endif /* ! CGEN_INT_INSN_P */ | |
474 | ||
475 | /* Written this way to avoid undefined behaviour. */ | |
476 | mask = (((1L << (length - 1)) - 1) << 1) | 1; | |
477 | ||
478 | value &= mask; | |
479 | /* sign extend? */ | |
480 | if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) | |
481 | && (value & (1L << (length - 1)))) | |
482 | value |= ~mask; | |
483 | ||
484 | *valuep = value; | |
485 | ||
486 | return 1; | |
487 | } | |
488 | ||
489 | /* Default insn extractor. | |
490 | ||
491 | INSN_VALUE is the first base_insn_bitsize bits, translated to host order. | |
492 | The extracted fields are stored in FIELDS. | |
493 | EX_INFO is used to handle reading variable length insns. | |
494 | Return the length of the insn in bits, or 0 if no match, | |
495 | or -1 if an error occurs fetching data (memory_error_func will have | |
496 | been called). */ | |
497 | ||
498 | static int | |
ffead7ae MM |
499 | extract_insn_normal (CGEN_CPU_DESC cd, |
500 | const CGEN_INSN *insn, | |
501 | CGEN_EXTRACT_INFO *ex_info, | |
502 | CGEN_INSN_INT insn_value, | |
503 | CGEN_FIELDS *fields, | |
504 | bfd_vma pc) | |
87e6d782 NC |
505 | { |
506 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
507 | const CGEN_SYNTAX_CHAR_TYPE *syn; | |
508 | ||
509 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); | |
510 | ||
511 | CGEN_INIT_EXTRACT (cd); | |
512 | ||
513 | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) | |
514 | { | |
515 | int length; | |
516 | ||
517 | if (CGEN_SYNTAX_CHAR_P (*syn)) | |
518 | continue; | |
519 | ||
520 | length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), | |
521 | ex_info, insn_value, fields, pc); | |
522 | if (length <= 0) | |
523 | return length; | |
524 | } | |
525 | ||
526 | /* We recognized and successfully extracted this insn. */ | |
527 | return CGEN_INSN_BITSIZE (insn); | |
528 | } | |
529 | \f | |
47b0e7ad | 530 | /* Machine generated code added here. */ |
87e6d782 | 531 | |
0e2ee3ca | 532 | const char * openrisc_cgen_insert_operand |
47b0e7ad | 533 | (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); |
0e2ee3ca | 534 | |
87e6d782 NC |
535 | /* Main entry point for operand insertion. |
536 | ||
537 | This function is basically just a big switch statement. Earlier versions | |
538 | used tables to look up the function to use, but | |
539 | - if the table contains both assembler and disassembler functions then | |
540 | the disassembler contains much of the assembler and vice-versa, | |
541 | - there's a lot of inlining possibilities as things grow, | |
542 | - using a switch statement avoids the function call overhead. | |
543 | ||
544 | This function could be moved into `parse_insn_normal', but keeping it | |
545 | separate makes clear the interface between `parse_insn_normal' and each of | |
546 | the handlers. It's also needed by GAS to insert operands that couldn't be | |
9a2e995d | 547 | resolved during parsing. */ |
87e6d782 NC |
548 | |
549 | const char * | |
47b0e7ad NC |
550 | openrisc_cgen_insert_operand (CGEN_CPU_DESC cd, |
551 | int opindex, | |
552 | CGEN_FIELDS * fields, | |
553 | CGEN_INSN_BYTES_PTR buffer, | |
554 | bfd_vma pc ATTRIBUTE_UNUSED) | |
87e6d782 NC |
555 | { |
556 | const char * errmsg = NULL; | |
557 | unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); | |
558 | ||
559 | switch (opindex) | |
560 | { | |
561 | case OPENRISC_OPERAND_ABS_26 : | |
562 | { | |
563 | long value = fields->f_abs26; | |
564 | value = ((unsigned int) (pc) >> (2)); | |
565 | errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_ABS_ADDR), 0, 25, 26, 32, total_length, buffer); | |
566 | } | |
567 | break; | |
568 | case OPENRISC_OPERAND_DISP_26 : | |
569 | { | |
570 | long value = fields->f_disp26; | |
571 | value = ((int) (((value) - (pc))) >> (2)); | |
572 | errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer); | |
573 | } | |
574 | break; | |
575 | case OPENRISC_OPERAND_HI16 : | |
576 | errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); | |
577 | break; | |
578 | case OPENRISC_OPERAND_LO16 : | |
579 | errmsg = insert_normal (cd, fields->f_lo16, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); | |
580 | break; | |
581 | case OPENRISC_OPERAND_OP_F_23 : | |
582 | errmsg = insert_normal (cd, fields->f_op4, 0, 0, 23, 3, 32, total_length, buffer); | |
583 | break; | |
584 | case OPENRISC_OPERAND_OP_F_3 : | |
585 | errmsg = insert_normal (cd, fields->f_op5, 0, 0, 25, 5, 32, total_length, buffer); | |
586 | break; | |
587 | case OPENRISC_OPERAND_RA : | |
588 | errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer); | |
589 | break; | |
590 | case OPENRISC_OPERAND_RB : | |
591 | errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer); | |
592 | break; | |
593 | case OPENRISC_OPERAND_RD : | |
594 | errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); | |
595 | break; | |
596 | case OPENRISC_OPERAND_SIMM_16 : | |
597 | errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer); | |
598 | break; | |
599 | case OPENRISC_OPERAND_UI16NC : | |
600 | { | |
601 | { | |
602 | FLD (f_i16_2) = ((((unsigned int) (FLD (f_i16nc)) >> (11))) & (31)); | |
603 | FLD (f_i16_1) = ((FLD (f_i16nc)) & (2047)); | |
604 | } | |
605 | errmsg = insert_normal (cd, fields->f_i16_1, 0, 0, 10, 11, 32, total_length, buffer); | |
606 | if (errmsg) | |
607 | break; | |
608 | errmsg = insert_normal (cd, fields->f_i16_2, 0, 0, 25, 5, 32, total_length, buffer); | |
609 | if (errmsg) | |
610 | break; | |
611 | } | |
612 | break; | |
613 | case OPENRISC_OPERAND_UIMM_16 : | |
614 | errmsg = insert_normal (cd, fields->f_uimm16, 0, 0, 15, 16, 32, total_length, buffer); | |
615 | break; | |
616 | case OPENRISC_OPERAND_UIMM_5 : | |
617 | errmsg = insert_normal (cd, fields->f_uimm5, 0, 0, 4, 5, 32, total_length, buffer); | |
618 | break; | |
619 | ||
620 | default : | |
621 | /* xgettext:c-format */ | |
622 | fprintf (stderr, _("Unrecognized field %d while building insn.\n"), | |
623 | opindex); | |
624 | abort (); | |
625 | } | |
626 | ||
627 | return errmsg; | |
628 | } | |
629 | ||
0e2ee3ca | 630 | int openrisc_cgen_extract_operand |
47b0e7ad | 631 | (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); |
0e2ee3ca | 632 | |
87e6d782 NC |
633 | /* Main entry point for operand extraction. |
634 | The result is <= 0 for error, >0 for success. | |
635 | ??? Actual values aren't well defined right now. | |
636 | ||
637 | This function is basically just a big switch statement. Earlier versions | |
638 | used tables to look up the function to use, but | |
639 | - if the table contains both assembler and disassembler functions then | |
640 | the disassembler contains much of the assembler and vice-versa, | |
641 | - there's a lot of inlining possibilities as things grow, | |
642 | - using a switch statement avoids the function call overhead. | |
643 | ||
644 | This function could be moved into `print_insn_normal', but keeping it | |
645 | separate makes clear the interface between `print_insn_normal' and each of | |
9a2e995d | 646 | the handlers. */ |
87e6d782 NC |
647 | |
648 | int | |
47b0e7ad NC |
649 | openrisc_cgen_extract_operand (CGEN_CPU_DESC cd, |
650 | int opindex, | |
651 | CGEN_EXTRACT_INFO *ex_info, | |
652 | CGEN_INSN_INT insn_value, | |
653 | CGEN_FIELDS * fields, | |
654 | bfd_vma pc) | |
87e6d782 NC |
655 | { |
656 | /* Assume success (for those operands that are nops). */ | |
657 | int length = 1; | |
658 | unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); | |
659 | ||
660 | switch (opindex) | |
661 | { | |
662 | case OPENRISC_OPERAND_ABS_26 : | |
663 | { | |
664 | long value; | |
665 | length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_ABS_ADDR), 0, 25, 26, 32, total_length, pc, & value); | |
666 | value = ((value) << (2)); | |
667 | fields->f_abs26 = value; | |
668 | } | |
669 | break; | |
670 | case OPENRISC_OPERAND_DISP_26 : | |
671 | { | |
672 | long value; | |
673 | length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, pc, & value); | |
674 | value = ((((value) << (2))) + (pc)); | |
675 | fields->f_disp26 = value; | |
676 | } | |
677 | break; | |
678 | case OPENRISC_OPERAND_HI16 : | |
679 | length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_simm16); | |
680 | break; | |
681 | case OPENRISC_OPERAND_LO16 : | |
682 | length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_lo16); | |
683 | break; | |
684 | case OPENRISC_OPERAND_OP_F_23 : | |
685 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 23, 3, 32, total_length, pc, & fields->f_op4); | |
686 | break; | |
687 | case OPENRISC_OPERAND_OP_F_3 : | |
688 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_op5); | |
689 | break; | |
690 | case OPENRISC_OPERAND_RA : | |
691 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2); | |
692 | break; | |
693 | case OPENRISC_OPERAND_RB : | |
694 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3); | |
695 | break; | |
696 | case OPENRISC_OPERAND_RD : | |
697 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); | |
698 | break; | |
699 | case OPENRISC_OPERAND_SIMM_16 : | |
700 | length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_simm16); | |
701 | break; | |
702 | case OPENRISC_OPERAND_UI16NC : | |
703 | { | |
704 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_i16_1); | |
705 | if (length <= 0) break; | |
706 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_i16_2); | |
707 | if (length <= 0) break; | |
708 | { | |
709 | FLD (f_i16nc) = openrisc_sign_extend_16bit (((((FLD (f_i16_2)) << (11))) | (FLD (f_i16_1)))); | |
710 | } | |
711 | } | |
712 | break; | |
713 | case OPENRISC_OPERAND_UIMM_16 : | |
714 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm16); | |
715 | break; | |
716 | case OPENRISC_OPERAND_UIMM_5 : | |
717 | length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 5, 32, total_length, pc, & fields->f_uimm5); | |
718 | break; | |
719 | ||
720 | default : | |
721 | /* xgettext:c-format */ | |
722 | fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), | |
723 | opindex); | |
724 | abort (); | |
725 | } | |
726 | ||
727 | return length; | |
728 | } | |
729 | ||
730 | cgen_insert_fn * const openrisc_cgen_insert_handlers[] = | |
731 | { | |
732 | insert_insn_normal, | |
733 | }; | |
734 | ||
735 | cgen_extract_fn * const openrisc_cgen_extract_handlers[] = | |
736 | { | |
737 | extract_insn_normal, | |
738 | }; | |
739 | ||
47b0e7ad NC |
740 | int openrisc_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); |
741 | bfd_vma openrisc_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); | |
0e2ee3ca | 742 | |
87e6d782 NC |
743 | /* Getting values from cgen_fields is handled by a collection of functions. |
744 | They are distinguished by the type of the VALUE argument they return. | |
745 | TODO: floating point, inlining support, remove cases where result type | |
746 | not appropriate. */ | |
747 | ||
748 | int | |
47b0e7ad NC |
749 | openrisc_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
750 | int opindex, | |
751 | const CGEN_FIELDS * fields) | |
87e6d782 NC |
752 | { |
753 | int value; | |
754 | ||
755 | switch (opindex) | |
756 | { | |
757 | case OPENRISC_OPERAND_ABS_26 : | |
758 | value = fields->f_abs26; | |
759 | break; | |
760 | case OPENRISC_OPERAND_DISP_26 : | |
761 | value = fields->f_disp26; | |
762 | break; | |
763 | case OPENRISC_OPERAND_HI16 : | |
764 | value = fields->f_simm16; | |
765 | break; | |
766 | case OPENRISC_OPERAND_LO16 : | |
767 | value = fields->f_lo16; | |
768 | break; | |
769 | case OPENRISC_OPERAND_OP_F_23 : | |
770 | value = fields->f_op4; | |
771 | break; | |
772 | case OPENRISC_OPERAND_OP_F_3 : | |
773 | value = fields->f_op5; | |
774 | break; | |
775 | case OPENRISC_OPERAND_RA : | |
776 | value = fields->f_r2; | |
777 | break; | |
778 | case OPENRISC_OPERAND_RB : | |
779 | value = fields->f_r3; | |
780 | break; | |
781 | case OPENRISC_OPERAND_RD : | |
782 | value = fields->f_r1; | |
783 | break; | |
784 | case OPENRISC_OPERAND_SIMM_16 : | |
785 | value = fields->f_simm16; | |
786 | break; | |
787 | case OPENRISC_OPERAND_UI16NC : | |
788 | value = fields->f_i16nc; | |
789 | break; | |
790 | case OPENRISC_OPERAND_UIMM_16 : | |
791 | value = fields->f_uimm16; | |
792 | break; | |
793 | case OPENRISC_OPERAND_UIMM_5 : | |
794 | value = fields->f_uimm5; | |
795 | break; | |
796 | ||
797 | default : | |
798 | /* xgettext:c-format */ | |
799 | fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), | |
800 | opindex); | |
801 | abort (); | |
802 | } | |
803 | ||
804 | return value; | |
805 | } | |
806 | ||
807 | bfd_vma | |
47b0e7ad NC |
808 | openrisc_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
809 | int opindex, | |
810 | const CGEN_FIELDS * fields) | |
87e6d782 NC |
811 | { |
812 | bfd_vma value; | |
813 | ||
814 | switch (opindex) | |
815 | { | |
816 | case OPENRISC_OPERAND_ABS_26 : | |
817 | value = fields->f_abs26; | |
818 | break; | |
819 | case OPENRISC_OPERAND_DISP_26 : | |
820 | value = fields->f_disp26; | |
821 | break; | |
822 | case OPENRISC_OPERAND_HI16 : | |
823 | value = fields->f_simm16; | |
824 | break; | |
825 | case OPENRISC_OPERAND_LO16 : | |
826 | value = fields->f_lo16; | |
827 | break; | |
828 | case OPENRISC_OPERAND_OP_F_23 : | |
829 | value = fields->f_op4; | |
830 | break; | |
831 | case OPENRISC_OPERAND_OP_F_3 : | |
832 | value = fields->f_op5; | |
833 | break; | |
834 | case OPENRISC_OPERAND_RA : | |
835 | value = fields->f_r2; | |
836 | break; | |
837 | case OPENRISC_OPERAND_RB : | |
838 | value = fields->f_r3; | |
839 | break; | |
840 | case OPENRISC_OPERAND_RD : | |
841 | value = fields->f_r1; | |
842 | break; | |
843 | case OPENRISC_OPERAND_SIMM_16 : | |
844 | value = fields->f_simm16; | |
845 | break; | |
846 | case OPENRISC_OPERAND_UI16NC : | |
847 | value = fields->f_i16nc; | |
848 | break; | |
849 | case OPENRISC_OPERAND_UIMM_16 : | |
850 | value = fields->f_uimm16; | |
851 | break; | |
852 | case OPENRISC_OPERAND_UIMM_5 : | |
853 | value = fields->f_uimm5; | |
854 | break; | |
855 | ||
856 | default : | |
857 | /* xgettext:c-format */ | |
858 | fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), | |
859 | opindex); | |
860 | abort (); | |
861 | } | |
862 | ||
863 | return value; | |
864 | } | |
865 | ||
47b0e7ad NC |
866 | void openrisc_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); |
867 | void openrisc_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); | |
0e2ee3ca | 868 | |
87e6d782 NC |
869 | /* Stuffing values in cgen_fields is handled by a collection of functions. |
870 | They are distinguished by the type of the VALUE argument they accept. | |
871 | TODO: floating point, inlining support, remove cases where argument type | |
872 | not appropriate. */ | |
873 | ||
874 | void | |
47b0e7ad NC |
875 | openrisc_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
876 | int opindex, | |
877 | CGEN_FIELDS * fields, | |
878 | int value) | |
87e6d782 NC |
879 | { |
880 | switch (opindex) | |
881 | { | |
882 | case OPENRISC_OPERAND_ABS_26 : | |
883 | fields->f_abs26 = value; | |
884 | break; | |
885 | case OPENRISC_OPERAND_DISP_26 : | |
886 | fields->f_disp26 = value; | |
887 | break; | |
888 | case OPENRISC_OPERAND_HI16 : | |
889 | fields->f_simm16 = value; | |
890 | break; | |
891 | case OPENRISC_OPERAND_LO16 : | |
892 | fields->f_lo16 = value; | |
893 | break; | |
894 | case OPENRISC_OPERAND_OP_F_23 : | |
895 | fields->f_op4 = value; | |
896 | break; | |
897 | case OPENRISC_OPERAND_OP_F_3 : | |
898 | fields->f_op5 = value; | |
899 | break; | |
900 | case OPENRISC_OPERAND_RA : | |
901 | fields->f_r2 = value; | |
902 | break; | |
903 | case OPENRISC_OPERAND_RB : | |
904 | fields->f_r3 = value; | |
905 | break; | |
906 | case OPENRISC_OPERAND_RD : | |
907 | fields->f_r1 = value; | |
908 | break; | |
909 | case OPENRISC_OPERAND_SIMM_16 : | |
910 | fields->f_simm16 = value; | |
911 | break; | |
912 | case OPENRISC_OPERAND_UI16NC : | |
913 | fields->f_i16nc = value; | |
914 | break; | |
915 | case OPENRISC_OPERAND_UIMM_16 : | |
916 | fields->f_uimm16 = value; | |
917 | break; | |
918 | case OPENRISC_OPERAND_UIMM_5 : | |
919 | fields->f_uimm5 = value; | |
920 | break; | |
921 | ||
922 | default : | |
923 | /* xgettext:c-format */ | |
924 | fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), | |
925 | opindex); | |
926 | abort (); | |
927 | } | |
928 | } | |
929 | ||
930 | void | |
47b0e7ad NC |
931 | openrisc_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
932 | int opindex, | |
933 | CGEN_FIELDS * fields, | |
934 | bfd_vma value) | |
87e6d782 NC |
935 | { |
936 | switch (opindex) | |
937 | { | |
938 | case OPENRISC_OPERAND_ABS_26 : | |
939 | fields->f_abs26 = value; | |
940 | break; | |
941 | case OPENRISC_OPERAND_DISP_26 : | |
942 | fields->f_disp26 = value; | |
943 | break; | |
944 | case OPENRISC_OPERAND_HI16 : | |
945 | fields->f_simm16 = value; | |
946 | break; | |
947 | case OPENRISC_OPERAND_LO16 : | |
948 | fields->f_lo16 = value; | |
949 | break; | |
950 | case OPENRISC_OPERAND_OP_F_23 : | |
951 | fields->f_op4 = value; | |
952 | break; | |
953 | case OPENRISC_OPERAND_OP_F_3 : | |
954 | fields->f_op5 = value; | |
955 | break; | |
956 | case OPENRISC_OPERAND_RA : | |
957 | fields->f_r2 = value; | |
958 | break; | |
959 | case OPENRISC_OPERAND_RB : | |
960 | fields->f_r3 = value; | |
961 | break; | |
962 | case OPENRISC_OPERAND_RD : | |
963 | fields->f_r1 = value; | |
964 | break; | |
965 | case OPENRISC_OPERAND_SIMM_16 : | |
966 | fields->f_simm16 = value; | |
967 | break; | |
968 | case OPENRISC_OPERAND_UI16NC : | |
969 | fields->f_i16nc = value; | |
970 | break; | |
971 | case OPENRISC_OPERAND_UIMM_16 : | |
972 | fields->f_uimm16 = value; | |
973 | break; | |
974 | case OPENRISC_OPERAND_UIMM_5 : | |
975 | fields->f_uimm5 = value; | |
976 | break; | |
977 | ||
978 | default : | |
979 | /* xgettext:c-format */ | |
980 | fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), | |
981 | opindex); | |
982 | abort (); | |
983 | } | |
984 | } | |
985 | ||
986 | /* Function to call before using the instruction builder tables. */ | |
987 | ||
988 | void | |
47b0e7ad | 989 | openrisc_cgen_init_ibld_table (CGEN_CPU_DESC cd) |
87e6d782 NC |
990 | { |
991 | cd->insert_handlers = & openrisc_cgen_insert_handlers[0]; | |
992 | cd->extract_handlers = & openrisc_cgen_extract_handlers[0]; | |
993 | ||
994 | cd->insert_operand = openrisc_cgen_insert_operand; | |
995 | cd->extract_operand = openrisc_cgen_extract_operand; | |
996 | ||
997 | cd->get_int_operand = openrisc_cgen_get_int_operand; | |
998 | cd->set_int_operand = openrisc_cgen_set_int_operand; | |
999 | cd->get_vma_operand = openrisc_cgen_get_vma_operand; | |
1000 | cd->set_vma_operand = openrisc_cgen_set_vma_operand; | |
1001 | } |