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4162bb66 | 1 | /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */ |
a40cbfa3 NC |
2 | /* Disassembler interface for targets using CGEN. -*- C -*- |
3 | CGEN: Cpu tools GENerator | |
4 | ||
47b0e7ad NC |
5 | THIS FILE IS MACHINE GENERATED WITH CGEN. |
6 | - the resultant file is machine generated, cgen-dis.in isn't | |
a40cbfa3 | 7 | |
219d1afa | 8 | Copyright (C) 1996-2018 Free Software Foundation, Inc. |
a40cbfa3 | 9 | |
9b201bb5 | 10 | This file is part of libopcodes. |
a40cbfa3 | 11 | |
9b201bb5 | 12 | This library is free software; you can redistribute it and/or modify |
47b0e7ad | 13 | it under the terms of the GNU General Public License as published by |
9b201bb5 | 14 | the Free Software Foundation; either version 3, or (at your option) |
47b0e7ad | 15 | any later version. |
a40cbfa3 | 16 | |
9b201bb5 NC |
17 | It is distributed in the hope that it will be useful, but WITHOUT |
18 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
19 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
20 | License for more details. | |
a40cbfa3 | 21 | |
47b0e7ad NC |
22 | You should have received a copy of the GNU General Public License |
23 | along with this program; if not, write to the Free Software Foundation, Inc., | |
24 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
a40cbfa3 NC |
25 | |
26 | /* ??? Eventually more and more of this stuff can go to cpu-independent files. | |
27 | Keep that in mind. */ | |
28 | ||
29 | #include "sysdep.h" | |
30 | #include <stdio.h> | |
31 | #include "ansidecl.h" | |
88c1242d | 32 | #include "disassemble.h" |
a40cbfa3 NC |
33 | #include "bfd.h" |
34 | #include "symcat.h" | |
98f70fc4 | 35 | #include "libiberty.h" |
a40cbfa3 NC |
36 | #include "ip2k-desc.h" |
37 | #include "ip2k-opc.h" | |
38 | #include "opintl.h" | |
39 | ||
40 | /* Default text to print if an instruction isn't recognized. */ | |
41 | #define UNKNOWN_INSN_MSG _("*unknown*") | |
42 | ||
43 | static void print_normal | |
ffead7ae | 44 | (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int); |
a40cbfa3 | 45 | static void print_address |
bf143b25 | 46 | (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED; |
a40cbfa3 | 47 | static void print_keyword |
bf143b25 | 48 | (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED; |
a40cbfa3 | 49 | static void print_insn_normal |
ffead7ae | 50 | (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int); |
a40cbfa3 | 51 | static int print_insn |
33b71eeb | 52 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned); |
a40cbfa3 | 53 | static int default_print_insn |
bf143b25 | 54 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED; |
a40cbfa3 | 55 | static int read_insn |
33b71eeb | 56 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *, |
ffead7ae | 57 | unsigned long *); |
a40cbfa3 | 58 | \f |
47b0e7ad | 59 | /* -- disassembler routines inserted here. */ |
a40cbfa3 NC |
60 | |
61 | /* -- dis.c */ | |
62 | ||
63 | static void | |
47b0e7ad NC |
64 | print_fr (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
65 | void * dis_info, | |
66 | long value, | |
67 | unsigned int attrs ATTRIBUTE_UNUSED, | |
68 | bfd_vma pc ATTRIBUTE_UNUSED, | |
69 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
70 | { |
71 | disassemble_info *info = (disassemble_info *) dis_info; | |
72 | const CGEN_KEYWORD_ENTRY *ke; | |
73 | extern CGEN_KEYWORD ip2k_cgen_opval_register_names; | |
74 | long offsettest; | |
75 | long offsetvalue; | |
76 | ||
47b0e7ad | 77 | if (value == 0) /* This is (IP). */ |
98f70fc4 | 78 | { |
a40cbfa3 NC |
79 | (*info->fprintf_func) (info->stream, "%s", "(IP)"); |
80 | return; | |
98f70fc4 | 81 | } |
a40cbfa3 NC |
82 | |
83 | offsettest = value >> 7; | |
84 | offsetvalue = value & 0x7F; | |
85 | ||
47b0e7ad NC |
86 | /* Check to see if first two bits are 10 -> (DP). */ |
87 | if (offsettest == 2) | |
98f70fc4 | 88 | { |
47b0e7ad | 89 | if (offsetvalue == 0) |
98f70fc4 | 90 | (*info->fprintf_func) (info->stream, "%s","(DP)"); |
a40cbfa3 | 91 | else |
0f82ff91 | 92 | (*info->fprintf_func) (info->stream, "$%lx%s", offsetvalue, "(DP)"); |
a40cbfa3 | 93 | return; |
98f70fc4 | 94 | } |
a40cbfa3 | 95 | |
47b0e7ad NC |
96 | /* Check to see if first two bits are 11 -> (SP). */ |
97 | if (offsettest == 3) | |
98f70fc4 | 98 | { |
47b0e7ad | 99 | if (offsetvalue == 0) |
98f70fc4 | 100 | (*info->fprintf_func) (info->stream, "%s", "(SP)"); |
a40cbfa3 | 101 | else |
0fd3a477 | 102 | (*info->fprintf_func) (info->stream, "$%lx%s", offsetvalue,"(SP)"); |
a40cbfa3 | 103 | return; |
98f70fc4 | 104 | } |
a40cbfa3 | 105 | |
47b0e7ad | 106 | /* Attempt to print as a register keyword. */ |
a40cbfa3 | 107 | ke = cgen_keyword_lookup_value (& ip2k_cgen_opval_register_names, value); |
a40cbfa3 | 108 | |
47b0e7ad NC |
109 | if (ke != NULL) |
110 | (*info->fprintf_func) (info->stream, "%s", ke->name); | |
111 | else | |
112 | /* Print as an address literal. */ | |
0fd3a477 | 113 | (*info->fprintf_func) (info->stream, "$%02lx", value); |
a40cbfa3 NC |
114 | } |
115 | ||
116 | static void | |
47b0e7ad NC |
117 | print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
118 | void * dis_info, | |
119 | long value, | |
120 | unsigned int attrs ATTRIBUTE_UNUSED, | |
121 | bfd_vma pc ATTRIBUTE_UNUSED, | |
122 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
123 | { |
124 | disassemble_info *info = (disassemble_info *) dis_info; | |
125 | ||
0fd3a477 | 126 | (*info->fprintf_func) (info->stream, "$%lx", value); |
a40cbfa3 NC |
127 | } |
128 | ||
129 | static void | |
47b0e7ad NC |
130 | print_dollarhex8 (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
131 | void * dis_info, | |
132 | long value, | |
133 | unsigned int attrs ATTRIBUTE_UNUSED, | |
134 | bfd_vma pc ATTRIBUTE_UNUSED, | |
135 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
136 | { |
137 | disassemble_info *info = (disassemble_info *) dis_info; | |
138 | ||
0fd3a477 | 139 | (*info->fprintf_func) (info->stream, "$%02lx", value); |
a40cbfa3 NC |
140 | } |
141 | ||
a40cbfa3 | 142 | static void |
47b0e7ad NC |
143 | print_dollarhex_addr16h (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
144 | void * dis_info, | |
145 | long value, | |
146 | unsigned int attrs ATTRIBUTE_UNUSED, | |
147 | bfd_vma pc ATTRIBUTE_UNUSED, | |
148 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
149 | { |
150 | disassemble_info *info = (disassemble_info *) dis_info; | |
151 | ||
47b0e7ad NC |
152 | /* This is a loadh instruction. Shift the value to the left |
153 | by 8 bits so that disassembled code will reassemble properly. */ | |
a40cbfa3 NC |
154 | value = ((value << 8) & 0xFF00); |
155 | ||
0fd3a477 | 156 | (*info->fprintf_func) (info->stream, "$%04lx", value); |
a40cbfa3 NC |
157 | } |
158 | ||
159 | static void | |
47b0e7ad NC |
160 | print_dollarhex_addr16l (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
161 | void * dis_info, | |
162 | long value, | |
163 | unsigned int attrs ATTRIBUTE_UNUSED, | |
164 | bfd_vma pc ATTRIBUTE_UNUSED, | |
165 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
166 | { |
167 | disassemble_info *info = (disassemble_info *) dis_info; | |
168 | ||
0fd3a477 | 169 | (*info->fprintf_func) (info->stream, "$%04lx", value); |
a40cbfa3 NC |
170 | } |
171 | ||
172 | static void | |
47b0e7ad NC |
173 | print_dollarhex_p (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
174 | void * dis_info, | |
175 | long value, | |
176 | unsigned int attrs ATTRIBUTE_UNUSED, | |
177 | bfd_vma pc ATTRIBUTE_UNUSED, | |
178 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
179 | { |
180 | disassemble_info *info = (disassemble_info *) dis_info; | |
181 | ||
182 | value = ((value << 14) & 0x1C000); | |
183 | ;value = (value & 0x1FFFF); | |
0fd3a477 | 184 | (*info->fprintf_func) (info->stream, "$%05lx", value); |
a40cbfa3 NC |
185 | } |
186 | ||
187 | static void | |
47b0e7ad NC |
188 | print_dollarhex_cj (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
189 | void * dis_info, | |
190 | long value, | |
191 | unsigned int attrs ATTRIBUTE_UNUSED, | |
192 | bfd_vma pc ATTRIBUTE_UNUSED, | |
193 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
194 | { |
195 | disassemble_info *info = (disassemble_info *) dis_info; | |
196 | ||
197 | value = ((value << 1) & 0x1FFFF); | |
0fd3a477 | 198 | (*info->fprintf_func) (info->stream, "$%05lx", value); |
a40cbfa3 NC |
199 | } |
200 | ||
a40cbfa3 | 201 | static void |
47b0e7ad NC |
202 | print_decimal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
203 | void * dis_info, | |
204 | long value, | |
205 | unsigned int attrs ATTRIBUTE_UNUSED, | |
206 | bfd_vma pc ATTRIBUTE_UNUSED, | |
207 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
208 | { |
209 | disassemble_info *info = (disassemble_info *) dis_info; | |
210 | ||
0fd3a477 | 211 | (*info->fprintf_func) (info->stream, "%ld", value); |
a40cbfa3 NC |
212 | } |
213 | ||
214 | ||
215 | ||
216 | /* -- */ | |
217 | ||
218 | void ip2k_cgen_print_operand | |
47b0e7ad | 219 | (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int); |
a40cbfa3 NC |
220 | |
221 | /* Main entry point for printing operands. | |
222 | XINFO is a `void *' and not a `disassemble_info *' to not put a requirement | |
223 | of dis-asm.h on cgen.h. | |
224 | ||
225 | This function is basically just a big switch statement. Earlier versions | |
226 | used tables to look up the function to use, but | |
227 | - if the table contains both assembler and disassembler functions then | |
228 | the disassembler contains much of the assembler and vice-versa, | |
229 | - there's a lot of inlining possibilities as things grow, | |
230 | - using a switch statement avoids the function call overhead. | |
231 | ||
232 | This function could be moved into `print_insn_normal', but keeping it | |
233 | separate makes clear the interface between `print_insn_normal' and each of | |
234 | the handlers. */ | |
235 | ||
236 | void | |
47b0e7ad NC |
237 | ip2k_cgen_print_operand (CGEN_CPU_DESC cd, |
238 | int opindex, | |
239 | void * xinfo, | |
240 | CGEN_FIELDS *fields, | |
241 | void const *attrs ATTRIBUTE_UNUSED, | |
242 | bfd_vma pc, | |
243 | int length) | |
a40cbfa3 | 244 | { |
47b0e7ad | 245 | disassemble_info *info = (disassemble_info *) xinfo; |
a40cbfa3 NC |
246 | |
247 | switch (opindex) | |
248 | { | |
249 | case IP2K_OPERAND_ADDR16CJP : | |
250 | print_dollarhex_cj (cd, info, fields->f_addr16cjp, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length); | |
251 | break; | |
252 | case IP2K_OPERAND_ADDR16H : | |
253 | print_dollarhex_addr16h (cd, info, fields->f_imm8, 0, pc, length); | |
254 | break; | |
255 | case IP2K_OPERAND_ADDR16L : | |
256 | print_dollarhex_addr16l (cd, info, fields->f_imm8, 0, pc, length); | |
257 | break; | |
258 | case IP2K_OPERAND_ADDR16P : | |
259 | print_dollarhex_p (cd, info, fields->f_page3, 0, pc, length); | |
260 | break; | |
261 | case IP2K_OPERAND_BITNO : | |
262 | print_decimal (cd, info, fields->f_bitno, 0, pc, length); | |
263 | break; | |
264 | case IP2K_OPERAND_CBIT : | |
265 | print_normal (cd, info, 0, 0, pc, length); | |
266 | break; | |
267 | case IP2K_OPERAND_DCBIT : | |
268 | print_normal (cd, info, 0, 0, pc, length); | |
269 | break; | |
270 | case IP2K_OPERAND_FR : | |
271 | print_fr (cd, info, fields->f_reg, 0|(1<<CGEN_OPERAND_ABS_ADDR), pc, length); | |
272 | break; | |
273 | case IP2K_OPERAND_LIT8 : | |
274 | print_dollarhex8 (cd, info, fields->f_imm8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); | |
275 | break; | |
276 | case IP2K_OPERAND_PABITS : | |
277 | print_normal (cd, info, 0, 0, pc, length); | |
278 | break; | |
279 | case IP2K_OPERAND_RETI3 : | |
280 | print_dollarhex (cd, info, fields->f_reti3, 0, pc, length); | |
281 | break; | |
282 | case IP2K_OPERAND_ZBIT : | |
283 | print_normal (cd, info, 0, 0, pc, length); | |
284 | break; | |
285 | ||
286 | default : | |
287 | /* xgettext:c-format */ | |
288 | fprintf (stderr, _("Unrecognized field %d while printing insn.\n"), | |
289 | opindex); | |
290 | abort (); | |
291 | } | |
292 | } | |
293 | ||
43e65147 | 294 | cgen_print_fn * const ip2k_cgen_print_handlers[] = |
a40cbfa3 NC |
295 | { |
296 | print_insn_normal, | |
297 | }; | |
298 | ||
299 | ||
300 | void | |
47b0e7ad | 301 | ip2k_cgen_init_dis (CGEN_CPU_DESC cd) |
a40cbfa3 NC |
302 | { |
303 | ip2k_cgen_init_opcode_table (cd); | |
304 | ip2k_cgen_init_ibld_table (cd); | |
305 | cd->print_handlers = & ip2k_cgen_print_handlers[0]; | |
306 | cd->print_operand = ip2k_cgen_print_operand; | |
307 | } | |
308 | ||
309 | \f | |
310 | /* Default print handler. */ | |
311 | ||
312 | static void | |
ffead7ae MM |
313 | print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
314 | void *dis_info, | |
315 | long value, | |
316 | unsigned int attrs, | |
317 | bfd_vma pc ATTRIBUTE_UNUSED, | |
318 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
319 | { |
320 | disassemble_info *info = (disassemble_info *) dis_info; | |
321 | ||
a40cbfa3 NC |
322 | /* Print the operand as directed by the attributes. */ |
323 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) | |
324 | ; /* nothing to do */ | |
325 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) | |
326 | (*info->fprintf_func) (info->stream, "%ld", value); | |
327 | else | |
328 | (*info->fprintf_func) (info->stream, "0x%lx", value); | |
329 | } | |
330 | ||
331 | /* Default address handler. */ | |
332 | ||
333 | static void | |
ffead7ae MM |
334 | print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
335 | void *dis_info, | |
336 | bfd_vma value, | |
337 | unsigned int attrs, | |
338 | bfd_vma pc ATTRIBUTE_UNUSED, | |
339 | int length ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
340 | { |
341 | disassemble_info *info = (disassemble_info *) dis_info; | |
342 | ||
a40cbfa3 NC |
343 | /* Print the operand as directed by the attributes. */ |
344 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) | |
47b0e7ad | 345 | ; /* Nothing to do. */ |
a40cbfa3 NC |
346 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR)) |
347 | (*info->print_address_func) (value, info); | |
348 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR)) | |
349 | (*info->print_address_func) (value, info); | |
350 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) | |
351 | (*info->fprintf_func) (info->stream, "%ld", (long) value); | |
352 | else | |
353 | (*info->fprintf_func) (info->stream, "0x%lx", (long) value); | |
354 | } | |
355 | ||
356 | /* Keyword print handler. */ | |
357 | ||
358 | static void | |
ffead7ae MM |
359 | print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
360 | void *dis_info, | |
361 | CGEN_KEYWORD *keyword_table, | |
362 | long value, | |
363 | unsigned int attrs ATTRIBUTE_UNUSED) | |
a40cbfa3 NC |
364 | { |
365 | disassemble_info *info = (disassemble_info *) dis_info; | |
366 | const CGEN_KEYWORD_ENTRY *ke; | |
367 | ||
368 | ke = cgen_keyword_lookup_value (keyword_table, value); | |
369 | if (ke != NULL) | |
370 | (*info->fprintf_func) (info->stream, "%s", ke->name); | |
371 | else | |
372 | (*info->fprintf_func) (info->stream, "???"); | |
373 | } | |
374 | \f | |
375 | /* Default insn printer. | |
376 | ||
ffead7ae | 377 | DIS_INFO is defined as `void *' so the disassembler needn't know anything |
a40cbfa3 NC |
378 | about disassemble_info. */ |
379 | ||
380 | static void | |
ffead7ae MM |
381 | print_insn_normal (CGEN_CPU_DESC cd, |
382 | void *dis_info, | |
383 | const CGEN_INSN *insn, | |
384 | CGEN_FIELDS *fields, | |
385 | bfd_vma pc, | |
386 | int length) | |
a40cbfa3 NC |
387 | { |
388 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); | |
389 | disassemble_info *info = (disassemble_info *) dis_info; | |
390 | const CGEN_SYNTAX_CHAR_TYPE *syn; | |
391 | ||
392 | CGEN_INIT_PRINT (cd); | |
393 | ||
394 | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) | |
395 | { | |
396 | if (CGEN_SYNTAX_MNEMONIC_P (*syn)) | |
397 | { | |
398 | (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn)); | |
399 | continue; | |
400 | } | |
401 | if (CGEN_SYNTAX_CHAR_P (*syn)) | |
402 | { | |
403 | (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn)); | |
404 | continue; | |
405 | } | |
406 | ||
407 | /* We have an operand. */ | |
408 | ip2k_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info, | |
409 | fields, CGEN_INSN_ATTRS (insn), pc, length); | |
410 | } | |
411 | } | |
412 | \f | |
413 | /* Subroutine of print_insn. Reads an insn into the given buffers and updates | |
414 | the extract info. | |
415 | Returns 0 if all is well, non-zero otherwise. */ | |
416 | ||
417 | static int | |
ffead7ae MM |
418 | read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
419 | bfd_vma pc, | |
420 | disassemble_info *info, | |
33b71eeb | 421 | bfd_byte *buf, |
ffead7ae MM |
422 | int buflen, |
423 | CGEN_EXTRACT_INFO *ex_info, | |
424 | unsigned long *insn_value) | |
a40cbfa3 NC |
425 | { |
426 | int status = (*info->read_memory_func) (pc, buf, buflen, info); | |
47b0e7ad | 427 | |
a40cbfa3 NC |
428 | if (status != 0) |
429 | { | |
430 | (*info->memory_error_func) (status, pc, info); | |
431 | return -1; | |
432 | } | |
433 | ||
434 | ex_info->dis_info = info; | |
435 | ex_info->valid = (1 << buflen) - 1; | |
436 | ex_info->insn_bytes = buf; | |
437 | ||
438 | *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | /* Utility to print an insn. | |
443 | BUF is the base part of the insn, target byte order, BUFLEN bytes long. | |
444 | The result is the size of the insn in bytes or zero for an unknown insn | |
445 | or -1 if an error occurs fetching data (memory_error_func will have | |
446 | been called). */ | |
447 | ||
448 | static int | |
ffead7ae MM |
449 | print_insn (CGEN_CPU_DESC cd, |
450 | bfd_vma pc, | |
451 | disassemble_info *info, | |
33b71eeb | 452 | bfd_byte *buf, |
ffead7ae | 453 | unsigned int buflen) |
a40cbfa3 NC |
454 | { |
455 | CGEN_INSN_INT insn_value; | |
456 | const CGEN_INSN_LIST *insn_list; | |
457 | CGEN_EXTRACT_INFO ex_info; | |
458 | int basesize; | |
459 | ||
460 | /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */ | |
461 | basesize = cd->base_insn_bitsize < buflen * 8 ? | |
462 | cd->base_insn_bitsize : buflen * 8; | |
463 | insn_value = cgen_get_insn_value (cd, buf, basesize); | |
464 | ||
465 | ||
466 | /* Fill in ex_info fields like read_insn would. Don't actually call | |
467 | read_insn, since the incoming buffer is already read (and possibly | |
468 | modified a la m32r). */ | |
469 | ex_info.valid = (1 << buflen) - 1; | |
470 | ex_info.dis_info = info; | |
471 | ex_info.insn_bytes = buf; | |
472 | ||
473 | /* The instructions are stored in hash lists. | |
474 | Pick the first one and keep trying until we find the right one. */ | |
475 | ||
33b71eeb | 476 | insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value); |
a40cbfa3 NC |
477 | while (insn_list != NULL) |
478 | { | |
479 | const CGEN_INSN *insn = insn_list->insn; | |
480 | CGEN_FIELDS fields; | |
481 | int length; | |
482 | unsigned long insn_value_cropped; | |
483 | ||
43e65147 | 484 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED |
a40cbfa3 NC |
485 | /* Not needed as insn shouldn't be in hash lists if not supported. */ |
486 | /* Supported by this cpu? */ | |
487 | if (! ip2k_cgen_insn_supported (cd, insn)) | |
488 | { | |
489 | insn_list = CGEN_DIS_NEXT_INSN (insn_list); | |
490 | continue; | |
491 | } | |
492 | #endif | |
493 | ||
494 | /* Basic bit mask must be correct. */ | |
495 | /* ??? May wish to allow target to defer this check until the extract | |
496 | handler. */ | |
497 | ||
498 | /* Base size may exceed this instruction's size. Extract the | |
499 | relevant part from the buffer. */ | |
500 | if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen && | |
501 | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) | |
43e65147 | 502 | insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn), |
a40cbfa3 NC |
503 | info->endian == BFD_ENDIAN_BIG); |
504 | else | |
505 | insn_value_cropped = insn_value; | |
506 | ||
507 | if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn)) | |
508 | == CGEN_INSN_BASE_VALUE (insn)) | |
509 | { | |
510 | /* Printing is handled in two passes. The first pass parses the | |
511 | machine insn and extracts the fields. The second pass prints | |
512 | them. */ | |
513 | ||
514 | /* Make sure the entire insn is loaded into insn_value, if it | |
515 | can fit. */ | |
516 | if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) && | |
517 | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) | |
518 | { | |
519 | unsigned long full_insn_value; | |
520 | int rc = read_insn (cd, pc, info, buf, | |
521 | CGEN_INSN_BITSIZE (insn) / 8, | |
522 | & ex_info, & full_insn_value); | |
523 | if (rc != 0) | |
524 | return rc; | |
525 | length = CGEN_EXTRACT_FN (cd, insn) | |
526 | (cd, insn, &ex_info, full_insn_value, &fields, pc); | |
527 | } | |
528 | else | |
529 | length = CGEN_EXTRACT_FN (cd, insn) | |
530 | (cd, insn, &ex_info, insn_value_cropped, &fields, pc); | |
531 | ||
47b0e7ad | 532 | /* Length < 0 -> error. */ |
a40cbfa3 NC |
533 | if (length < 0) |
534 | return length; | |
535 | if (length > 0) | |
536 | { | |
537 | CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length); | |
47b0e7ad | 538 | /* Length is in bits, result is in bytes. */ |
a40cbfa3 NC |
539 | return length / 8; |
540 | } | |
541 | } | |
542 | ||
543 | insn_list = CGEN_DIS_NEXT_INSN (insn_list); | |
544 | } | |
545 | ||
546 | return 0; | |
547 | } | |
548 | ||
549 | /* Default value for CGEN_PRINT_INSN. | |
550 | The result is the size of the insn in bytes or zero for an unknown insn | |
551 | or -1 if an error occured fetching bytes. */ | |
552 | ||
553 | #ifndef CGEN_PRINT_INSN | |
554 | #define CGEN_PRINT_INSN default_print_insn | |
555 | #endif | |
556 | ||
557 | static int | |
ffead7ae | 558 | default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info) |
a40cbfa3 | 559 | { |
33b71eeb | 560 | bfd_byte buf[CGEN_MAX_INSN_SIZE]; |
a40cbfa3 NC |
561 | int buflen; |
562 | int status; | |
563 | ||
564 | /* Attempt to read the base part of the insn. */ | |
565 | buflen = cd->base_insn_bitsize / 8; | |
566 | status = (*info->read_memory_func) (pc, buf, buflen, info); | |
567 | ||
568 | /* Try again with the minimum part, if min < base. */ | |
569 | if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) | |
570 | { | |
571 | buflen = cd->min_insn_bitsize / 8; | |
572 | status = (*info->read_memory_func) (pc, buf, buflen, info); | |
573 | } | |
574 | ||
575 | if (status != 0) | |
576 | { | |
577 | (*info->memory_error_func) (status, pc, info); | |
578 | return -1; | |
579 | } | |
580 | ||
581 | return print_insn (cd, pc, info, buf, buflen); | |
582 | } | |
583 | ||
584 | /* Main entry point. | |
585 | Print one instruction from PC on INFO->STREAM. | |
586 | Return the size of the instruction (in bytes). */ | |
587 | ||
47b0e7ad NC |
588 | typedef struct cpu_desc_list |
589 | { | |
a40cbfa3 | 590 | struct cpu_desc_list *next; |
fb53f5a8 | 591 | CGEN_BITSET *isa; |
a40cbfa3 NC |
592 | int mach; |
593 | int endian; | |
594 | CGEN_CPU_DESC cd; | |
595 | } cpu_desc_list; | |
596 | ||
597 | int | |
ffead7ae | 598 | print_insn_ip2k (bfd_vma pc, disassemble_info *info) |
a40cbfa3 NC |
599 | { |
600 | static cpu_desc_list *cd_list = 0; | |
601 | cpu_desc_list *cl = 0; | |
602 | static CGEN_CPU_DESC cd = 0; | |
fb53f5a8 | 603 | static CGEN_BITSET *prev_isa; |
a40cbfa3 NC |
604 | static int prev_mach; |
605 | static int prev_endian; | |
606 | int length; | |
fb53f5a8 DB |
607 | CGEN_BITSET *isa; |
608 | int mach; | |
a40cbfa3 NC |
609 | int endian = (info->endian == BFD_ENDIAN_BIG |
610 | ? CGEN_ENDIAN_BIG | |
611 | : CGEN_ENDIAN_LITTLE); | |
612 | enum bfd_architecture arch; | |
613 | ||
614 | /* ??? gdb will set mach but leave the architecture as "unknown" */ | |
615 | #ifndef CGEN_BFD_ARCH | |
616 | #define CGEN_BFD_ARCH bfd_arch_ip2k | |
617 | #endif | |
618 | arch = info->arch; | |
619 | if (arch == bfd_arch_unknown) | |
620 | arch = CGEN_BFD_ARCH; | |
43e65147 | 621 | |
a40cbfa3 NC |
622 | /* There's no standard way to compute the machine or isa number |
623 | so we leave it to the target. */ | |
624 | #ifdef CGEN_COMPUTE_MACH | |
625 | mach = CGEN_COMPUTE_MACH (info); | |
626 | #else | |
627 | mach = info->mach; | |
628 | #endif | |
629 | ||
630 | #ifdef CGEN_COMPUTE_ISA | |
fb53f5a8 DB |
631 | { |
632 | static CGEN_BITSET *permanent_isa; | |
633 | ||
634 | if (!permanent_isa) | |
635 | permanent_isa = cgen_bitset_create (MAX_ISAS); | |
636 | isa = permanent_isa; | |
637 | cgen_bitset_clear (isa); | |
638 | cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info)); | |
639 | } | |
a40cbfa3 NC |
640 | #else |
641 | isa = info->insn_sets; | |
642 | #endif | |
643 | ||
644 | /* If we've switched cpu's, try to find a handle we've used before */ | |
645 | if (cd | |
fb53f5a8 | 646 | && (cgen_bitset_compare (isa, prev_isa) != 0 |
a40cbfa3 NC |
647 | || mach != prev_mach |
648 | || endian != prev_endian)) | |
649 | { | |
650 | cd = 0; | |
651 | for (cl = cd_list; cl; cl = cl->next) | |
652 | { | |
fb53f5a8 | 653 | if (cgen_bitset_compare (cl->isa, isa) == 0 && |
a40cbfa3 NC |
654 | cl->mach == mach && |
655 | cl->endian == endian) | |
656 | { | |
657 | cd = cl->cd; | |
fb53f5a8 | 658 | prev_isa = cd->isas; |
a40cbfa3 NC |
659 | break; |
660 | } | |
661 | } | |
43e65147 | 662 | } |
a40cbfa3 NC |
663 | |
664 | /* If we haven't initialized yet, initialize the opcode table. */ | |
665 | if (! cd) | |
666 | { | |
667 | const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach); | |
668 | const char *mach_name; | |
669 | ||
670 | if (!arch_type) | |
671 | abort (); | |
672 | mach_name = arch_type->printable_name; | |
673 | ||
fb53f5a8 | 674 | prev_isa = cgen_bitset_copy (isa); |
a40cbfa3 NC |
675 | prev_mach = mach; |
676 | prev_endian = endian; | |
677 | cd = ip2k_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa, | |
678 | CGEN_CPU_OPEN_BFDMACH, mach_name, | |
679 | CGEN_CPU_OPEN_ENDIAN, prev_endian, | |
680 | CGEN_CPU_OPEN_END); | |
681 | if (!cd) | |
682 | abort (); | |
683 | ||
47b0e7ad | 684 | /* Save this away for future reference. */ |
a40cbfa3 NC |
685 | cl = xmalloc (sizeof (struct cpu_desc_list)); |
686 | cl->cd = cd; | |
fb53f5a8 | 687 | cl->isa = prev_isa; |
a40cbfa3 NC |
688 | cl->mach = mach; |
689 | cl->endian = endian; | |
690 | cl->next = cd_list; | |
691 | cd_list = cl; | |
692 | ||
693 | ip2k_cgen_init_dis (cd); | |
694 | } | |
695 | ||
696 | /* We try to have as much common code as possible. | |
697 | But at this point some targets need to take over. */ | |
698 | /* ??? Some targets may need a hook elsewhere. Try to avoid this, | |
699 | but if not possible try to move this hook elsewhere rather than | |
700 | have two hooks. */ | |
701 | length = CGEN_PRINT_INSN (cd, pc, info); | |
702 | if (length > 0) | |
703 | return length; | |
704 | if (length < 0) | |
705 | return -1; | |
706 | ||
707 | (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); | |
708 | return cd->default_insn_bitsize / 8; | |
709 | } |