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b081650b | 1 | /* Morpho Technologies mRISC opcode support, for GNU Binutils. -*- C -*- |
aa820537 | 2 | Copyright 2001, 2007, 2008, 2009 Free Software Foundation, Inc. |
b081650b DB |
3 | |
4 | Contributed by Red Hat Inc; developed under contract from | |
5 | Morpho Technologies. | |
6 | ||
7 | This file is part of the GNU Binutils. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
9b201bb5 | 11 | the Free Software Foundation; either version 3 of the License, or |
b081650b DB |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
9b201bb5 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
b081650b | 23 | |
b081650b | 24 | |
9b201bb5 | 25 | /* Each section is delimited with start and end markers. |
b081650b DB |
26 | |
27 | <arch>-opc.h additions use: "-- opc.h" | |
28 | <arch>-opc.c additions use: "-- opc.c" | |
29 | <arch>-asm.c additions use: "-- asm.c" | |
30 | <arch>-dis.c additions use: "-- dis.c" | |
9b201bb5 | 31 | <arch>-ibd.h additions use: "-- ibd.h" */ |
b081650b DB |
32 | \f |
33 | /* -- opc.h */ | |
34 | ||
35 | /* Check applicability of instructions against machines. */ | |
36 | #define CGEN_VALIDATE_INSN_SUPPORTED | |
37 | ||
38 | /* Allows reason codes to be output when assembler errors occur. */ | |
39 | #define CGEN_VERBOSE_ASSEMBLER_ERRORS | |
40 | ||
41 | /* Override disassembly hashing - there are variable bits in the top | |
42 | byte of these instructions. */ | |
43 | #define CGEN_DIS_HASH_SIZE 8 | |
44 | #define CGEN_DIS_HASH(buf, value) (((* (unsigned char *) (buf)) >> 5) % CGEN_DIS_HASH_SIZE) | |
45 | ||
46 | #define CGEN_ASM_HASH_SIZE 127 | |
d031aafb | 47 | #define CGEN_ASM_HASH(insn) mt_asm_hash (insn) |
b081650b | 48 | |
d031aafb | 49 | extern unsigned int mt_asm_hash (const char *); |
b081650b | 50 | |
d031aafb | 51 | extern int mt_cgen_insn_supported (CGEN_CPU_DESC, const CGEN_INSN *); |
b081650b DB |
52 | |
53 | \f | |
54 | /* -- opc.c */ | |
55 | #include "safe-ctype.h" | |
56 | ||
57 | /* Special check to ensure that instruction exists for given machine. */ | |
58 | ||
59 | int | |
d031aafb | 60 | mt_cgen_insn_supported (CGEN_CPU_DESC cd, const CGEN_INSN *insn) |
b081650b DB |
61 | { |
62 | int machs = CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_MACH); | |
63 | ||
64 | /* No mach attribute? Assume it's supported for all machs. */ | |
65 | if (machs == 0) | |
66 | return 1; | |
67 | ||
68 | return ((machs & cd->machs) != 0); | |
69 | } | |
70 | ||
71 | /* A better hash function for instruction mnemonics. */ | |
72 | ||
73 | unsigned int | |
d031aafb | 74 | mt_asm_hash (const char* insn) |
b081650b DB |
75 | { |
76 | unsigned int hash; | |
77 | const char* m = insn; | |
78 | ||
79 | for (hash = 0; *m && ! ISSPACE (*m); m++) | |
80 | hash = (hash * 23) ^ (0x1F & TOLOWER (*m)); | |
81 | ||
82 | /* printf ("%s %d\n", insn, (hash % CGEN_ASM_HASH_SIZE)); */ | |
83 | ||
84 | return hash % CGEN_ASM_HASH_SIZE; | |
85 | } | |
86 | ||
87 | \f | |
88 | /* -- asm.c */ | |
b081650b DB |
89 | /* Range checking for signed numbers. Returns 0 if acceptable |
90 | and 1 if the value is out of bounds for a signed quantity. */ | |
91 | ||
92 | static int | |
93 | signed_out_of_bounds (long val) | |
94 | { | |
95 | if ((val < -32768) || (val > 32767)) | |
96 | return 1; | |
97 | return 0; | |
98 | } | |
99 | ||
6f84a2a6 NS |
100 | static const char * |
101 | parse_loopsize (CGEN_CPU_DESC cd, | |
102 | const char **strp, | |
103 | int opindex, | |
104 | void *arg) | |
105 | { | |
106 | signed long * valuep = (signed long *) arg; | |
107 | const char *errmsg; | |
108 | bfd_reloc_code_real_type code = BFD_RELOC_NONE; | |
109 | enum cgen_parse_operand_result result_type; | |
110 | bfd_vma value; | |
111 | ||
112 | /* Is it a control transfer instructions? */ | |
d031aafb | 113 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE) |
6f84a2a6 | 114 | { |
d031aafb | 115 | code = BFD_RELOC_MT_PCINSN8; |
6f84a2a6 NS |
116 | errmsg = cgen_parse_address (cd, strp, opindex, code, |
117 | & result_type, & value); | |
118 | *valuep = value; | |
119 | return errmsg; | |
120 | } | |
121 | ||
122 | abort (); | |
123 | } | |
124 | ||
b081650b DB |
125 | static const char * |
126 | parse_imm16 (CGEN_CPU_DESC cd, | |
127 | const char **strp, | |
128 | int opindex, | |
3ec2b351 | 129 | void *arg) |
b081650b | 130 | { |
3ec2b351 | 131 | signed long * valuep = (signed long *) arg; |
b081650b DB |
132 | const char *errmsg; |
133 | enum cgen_parse_operand_result result_type; | |
134 | bfd_reloc_code_real_type code = BFD_RELOC_NONE; | |
135 | bfd_vma value; | |
136 | ||
137 | /* Is it a control transfer instructions? */ | |
d031aafb | 138 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O) |
b081650b DB |
139 | { |
140 | code = BFD_RELOC_16_PCREL; | |
141 | errmsg = cgen_parse_address (cd, strp, opindex, code, | |
142 | & result_type, & value); | |
143 | if (errmsg == NULL) | |
144 | { | |
145 | if (signed_out_of_bounds (value)) | |
146 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); | |
147 | } | |
148 | *valuep = value; | |
149 | return errmsg; | |
150 | } | |
151 | ||
152 | /* If it's not a control transfer instruction, then | |
153 | we have to check for %OP relocating operators. */ | |
d031aafb | 154 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L) |
6f84a2a6 NS |
155 | ; |
156 | else if (strncmp (*strp, "%hi16", 5) == 0) | |
b081650b DB |
157 | { |
158 | *strp += 5; | |
159 | code = BFD_RELOC_HI16; | |
160 | } | |
161 | else if (strncmp (*strp, "%lo16", 5) == 0) | |
162 | { | |
163 | *strp += 5; | |
164 | code = BFD_RELOC_LO16; | |
165 | } | |
166 | ||
167 | /* If we found a %OP relocating operator, then parse it as an address. | |
168 | If not, we need to parse it as an integer, either signed or unsigned | |
169 | depending on which operand type we have. */ | |
170 | if (code != BFD_RELOC_NONE) | |
171 | { | |
172 | /* %OP relocating operator found. */ | |
173 | errmsg = cgen_parse_address (cd, strp, opindex, code, | |
174 | & result_type, & value); | |
175 | if (errmsg == NULL) | |
176 | { | |
177 | switch (result_type) | |
178 | { | |
179 | case (CGEN_PARSE_OPERAND_RESULT_NUMBER): | |
180 | if (code == BFD_RELOC_HI16) | |
181 | value = (value >> 16) & 0xFFFF; | |
182 | else if (code == BFD_RELOC_LO16) | |
183 | value = value & 0xFFFF; | |
184 | else | |
185 | errmsg = _("Biiiig Trouble in parse_imm16!"); | |
186 | break; | |
187 | ||
188 | case (CGEN_PARSE_OPERAND_RESULT_QUEUED): | |
189 | /* No special processing for this case. */ | |
190 | break; | |
191 | ||
192 | default: | |
90518ff4 | 193 | errmsg = _("The percent-operator's operand is not a symbol"); |
b081650b DB |
194 | break; |
195 | } | |
196 | } | |
197 | *valuep = value; | |
198 | } | |
199 | else | |
200 | { | |
201 | /* Parse hex values like 0xffff as unsigned, and sign extend | |
202 | them manually. */ | |
d031aafb | 203 | int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16); |
b081650b DB |
204 | |
205 | if ((*strp)[0] == '0' | |
206 | && ((*strp)[1] == 'x' || (*strp)[1] == 'X')) | |
207 | parse_signed = 0; | |
208 | ||
209 | /* No relocating operator. Parse as an number. */ | |
210 | if (parse_signed) | |
211 | { | |
212 | /* Parse as as signed integer. */ | |
213 | ||
214 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep); | |
215 | ||
216 | if (errmsg == NULL) | |
217 | { | |
218 | #if 0 | |
219 | /* Manual range checking is needed for the signed case. */ | |
220 | if (*valuep & 0x8000) | |
221 | value = 0xffff0000 | *valuep; | |
222 | else | |
223 | value = *valuep; | |
224 | ||
225 | if (signed_out_of_bounds (value)) | |
226 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); | |
227 | /* Truncate to 16 bits. This is necessary | |
228 | because cgen will have sign extended *valuep. */ | |
229 | *valuep &= 0xFFFF; | |
230 | #endif | |
231 | } | |
232 | } | |
233 | else | |
234 | { | |
d031aafb | 235 | /* MT_OPERAND_IMM16Z. Parse as an unsigned integer. */ |
3ec2b351 | 236 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep); |
b081650b | 237 | |
d031aafb | 238 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16 |
b081650b DB |
239 | && *valuep >= 0x8000 |
240 | && *valuep <= 0xffff) | |
241 | *valuep -= 0x10000; | |
242 | } | |
243 | } | |
244 | ||
245 | return errmsg; | |
246 | } | |
247 | ||
248 | ||
249 | static const char * | |
250 | parse_dup (CGEN_CPU_DESC cd, | |
251 | const char **strp, | |
252 | int opindex, | |
3ec2b351 | 253 | unsigned long *valuep) |
b081650b DB |
254 | { |
255 | const char *errmsg = NULL; | |
256 | ||
257 | if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0) | |
258 | { | |
259 | *strp += 3; | |
260 | *valuep = 1; | |
261 | } | |
262 | else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0) | |
263 | { | |
264 | *strp += 2; | |
265 | *valuep = 0; | |
266 | } | |
267 | else | |
268 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
269 | ||
270 | return errmsg; | |
271 | } | |
272 | ||
273 | ||
274 | static const char * | |
275 | parse_ball (CGEN_CPU_DESC cd, | |
276 | const char **strp, | |
277 | int opindex, | |
3ec2b351 | 278 | unsigned long *valuep) |
b081650b DB |
279 | { |
280 | const char *errmsg = NULL; | |
281 | ||
282 | if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0) | |
283 | { | |
284 | *strp += 3; | |
285 | *valuep = 1; | |
286 | } | |
287 | else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0) | |
288 | { | |
289 | *strp += 3; | |
290 | *valuep = 0; | |
291 | } | |
292 | else | |
293 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
294 | ||
295 | return errmsg; | |
296 | } | |
297 | ||
298 | static const char * | |
299 | parse_xmode (CGEN_CPU_DESC cd, | |
300 | const char **strp, | |
301 | int opindex, | |
3ec2b351 | 302 | unsigned long *valuep) |
b081650b DB |
303 | { |
304 | const char *errmsg = NULL; | |
305 | ||
306 | if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0) | |
307 | { | |
308 | *strp += 2; | |
309 | *valuep = 1; | |
310 | } | |
311 | else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0) | |
312 | { | |
313 | *strp += 2; | |
314 | *valuep = 0; | |
315 | } | |
316 | else | |
317 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
318 | ||
319 | return errmsg; | |
320 | } | |
321 | ||
322 | static const char * | |
323 | parse_rc (CGEN_CPU_DESC cd, | |
324 | const char **strp, | |
325 | int opindex, | |
3ec2b351 | 326 | unsigned long *valuep) |
b081650b DB |
327 | { |
328 | const char *errmsg = NULL; | |
329 | ||
330 | if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0) | |
331 | { | |
332 | *strp += 1; | |
333 | *valuep = 1; | |
334 | } | |
335 | else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0) | |
336 | { | |
337 | *strp += 1; | |
338 | *valuep = 0; | |
339 | } | |
340 | else | |
341 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
342 | ||
343 | return errmsg; | |
344 | } | |
345 | ||
346 | static const char * | |
347 | parse_cbrb (CGEN_CPU_DESC cd, | |
348 | const char **strp, | |
349 | int opindex, | |
3ec2b351 | 350 | unsigned long *valuep) |
b081650b DB |
351 | { |
352 | const char *errmsg = NULL; | |
353 | ||
354 | if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0) | |
355 | { | |
356 | *strp += 2; | |
357 | *valuep = 1; | |
358 | } | |
359 | else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0) | |
360 | { | |
361 | *strp += 2; | |
362 | *valuep = 0; | |
363 | } | |
364 | else | |
365 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
366 | ||
367 | return errmsg; | |
368 | } | |
369 | ||
370 | static const char * | |
371 | parse_rbbc (CGEN_CPU_DESC cd, | |
372 | const char **strp, | |
373 | int opindex, | |
3ec2b351 | 374 | unsigned long *valuep) |
b081650b DB |
375 | { |
376 | const char *errmsg = NULL; | |
377 | ||
378 | if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0) | |
379 | { | |
380 | *strp += 2; | |
381 | *valuep = 0; | |
382 | } | |
383 | else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0) | |
384 | { | |
385 | *strp += 3; | |
386 | *valuep = 1; | |
387 | } | |
388 | else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0) | |
389 | { | |
390 | *strp += 3; | |
391 | *valuep = 2; | |
392 | } | |
393 | else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0) | |
394 | { | |
395 | *strp += 2; | |
396 | *valuep = 3; | |
397 | } | |
398 | else | |
399 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
400 | ||
401 | return errmsg; | |
402 | } | |
403 | ||
404 | static const char * | |
405 | parse_type (CGEN_CPU_DESC cd, | |
406 | const char **strp, | |
407 | int opindex, | |
3ec2b351 | 408 | unsigned long *valuep) |
b081650b DB |
409 | { |
410 | const char *errmsg = NULL; | |
411 | ||
412 | if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0) | |
413 | { | |
414 | *strp += 3; | |
415 | *valuep = 0; | |
416 | } | |
417 | else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0) | |
418 | { | |
419 | *strp += 4; | |
420 | *valuep = 1; | |
421 | } | |
422 | else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0) | |
423 | { | |
424 | *strp += 2; | |
425 | *valuep = 2; | |
426 | } | |
427 | else | |
428 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); | |
429 | ||
430 | if ((errmsg == NULL) && (*valuep == 3)) | |
431 | errmsg = _("invalid operand. type may have values 0,1,2 only."); | |
432 | ||
433 | return errmsg; | |
434 | } | |
435 | ||
436 | /* -- dis.c */ | |
437 | static void print_dollarhex (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int); | |
6f84a2a6 | 438 | static void print_pcrel (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int); |
b081650b DB |
439 | |
440 | static void | |
441 | print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, | |
442 | void * dis_info, | |
443 | long value, | |
444 | unsigned int attrs ATTRIBUTE_UNUSED, | |
445 | bfd_vma pc ATTRIBUTE_UNUSED, | |
446 | int length ATTRIBUTE_UNUSED) | |
447 | { | |
448 | disassemble_info *info = (disassemble_info *) dis_info; | |
449 | ||
0e6b69be | 450 | info->fprintf_func (info->stream, "$%lx", value); |
b081650b DB |
451 | |
452 | if (0) | |
453 | print_normal (cd, dis_info, value, attrs, pc, length); | |
454 | } | |
455 | ||
6f84a2a6 NS |
456 | static void |
457 | print_pcrel (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, | |
458 | void * dis_info, | |
459 | long value, | |
460 | unsigned int attrs ATTRIBUTE_UNUSED, | |
461 | bfd_vma pc ATTRIBUTE_UNUSED, | |
462 | int length ATTRIBUTE_UNUSED) | |
463 | { | |
464 | print_address (cd, dis_info, value + pc, attrs, pc, length); | |
465 | } | |
b081650b DB |
466 | |
467 | /* -- */ | |
468 | ||
469 | ||
470 | ||
471 | ||
472 |