1/* Disassembler interface for targets using CGEN. -*- C -*- 2 CGEN: Cpu tools GENerator 3 4THIS FILE IS MACHINE GENERATED WITH CGEN. 5- the resultant file is machine generated, cgen-dis.in isn't 6 7Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 8Free Software Foundation, Inc. 9 10This file is part of the GNU Binutils and GDB, the GNU debugger. 11 12This program is free software; you can redistribute it and/or modify 13it under the terms of the GNU General Public License as published by 14the Free Software Foundation; either version 2, or (at your option) 15any later version. 16 17This program is distributed in the hope that it will be useful, 18but WITHOUT ANY WARRANTY; without even the implied warranty of 19MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20GNU General Public License for more details. 21 22You should have received a copy of the GNU General Public License 23along with this program; if not, write to the Free Software Foundation, Inc., 2459 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 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" 32#include "dis-asm.h" 33#include "bfd.h" 34#include "symcat.h" 35#include "libiberty.h" 36#include "frv-desc.h" 37#include "frv-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 43static void print_normal 44 (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int); 45static void print_address 46 (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int); 47static void print_keyword 48 (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int); 49static void print_insn_normal 50 (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int); 51static int print_insn 52 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, unsigned); 53static int default_print_insn 54 (CGEN_CPU_DESC, bfd_vma, disassemble_info *); 55static int read_insn 56 (CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int, CGEN_EXTRACT_INFO *, 57 unsigned long *); 58 59/* -- disassembler routines inserted here */ 60 61/* -- dis.c */ 62static void print_spr 63 PARAMS ((CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned)); 64static void print_hi 65 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int)); 66static void print_lo 67 PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int)); 68 69static void 70print_spr (cd, dis_info, names, regno, attrs) 71 CGEN_CPU_DESC cd; 72 PTR dis_info; 73 CGEN_KEYWORD *names; 74 long regno; 75 unsigned int attrs; 76{ 77 /* Use the register index format for any unnamed registers. */ 78 if (cgen_keyword_lookup_value (names, regno) == NULL) 79 { 80 disassemble_info *info = (disassemble_info *) dis_info; 81 (*info->fprintf_func) (info->stream, "spr[%ld]", regno); 82 } 83 else 84 print_keyword (cd, dis_info, names, regno, attrs); 85} 86 87static void 88print_hi (cd, dis_info, value, attrs, pc, length) 89 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; 90 PTR dis_info; 91 long value; 92 unsigned int attrs ATTRIBUTE_UNUSED; 93 bfd_vma pc ATTRIBUTE_UNUSED; 94 int length ATTRIBUTE_UNUSED; 95{ 96 disassemble_info *info = (disassemble_info *) dis_info; 97 if (value) 98 (*info->fprintf_func) (info->stream, "0x%lx", value); 99 else 100 (*info->fprintf_func) (info->stream, "hi(0x%lx)", value); 101} 102 103static void 104print_lo (cd, dis_info, value, attrs, pc, length) 105 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED; 106 PTR dis_info; 107 long value; 108 unsigned int attrs ATTRIBUTE_UNUSED; 109 bfd_vma pc ATTRIBUTE_UNUSED; 110 int length ATTRIBUTE_UNUSED; 111{ 112 disassemble_info *info = (disassemble_info *) dis_info; 113 if (value) 114 (*info->fprintf_func) (info->stream, "0x%lx", value); 115 else 116 (*info->fprintf_func) (info->stream, "lo(0x%lx)", value); 117} 118 119/* -- */ 120 121void frv_cgen_print_operand 122 PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, 123 void const *, bfd_vma, int)); 124 125/* Main entry point for printing operands. 126 XINFO is a `void *' and not a `disassemble_info *' to not put a requirement 127 of dis-asm.h on cgen.h. 128 129 This function is basically just a big switch statement. Earlier versions 130 used tables to look up the function to use, but 131 - if the table contains both assembler and disassembler functions then 132 the disassembler contains much of the assembler and vice-versa, 133 - there's a lot of inlining possibilities as things grow, 134 - using a switch statement avoids the function call overhead. 135 136 This function could be moved into `print_insn_normal', but keeping it 137 separate makes clear the interface between `print_insn_normal' and each of 138 the handlers. */ 139 140void 141frv_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length) 142 CGEN_CPU_DESC cd; 143 int opindex; 144 PTR xinfo; 145 CGEN_FIELDS *fields; 146 void const *attrs ATTRIBUTE_UNUSED; 147 bfd_vma pc; 148 int length; 149{ 150 disassemble_info *info = (disassemble_info *) xinfo; 151 152 switch (opindex) 153 { 154 case FRV_OPERAND_A0 : 155 print_normal (cd, info, fields->f_A, 0, pc, length); 156 break; 157 case FRV_OPERAND_A1 : 158 print_normal (cd, info, fields->f_A, 0, pc, length); 159 break; 160 case FRV_OPERAND_ACC40SI : 161 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Si, 0); 162 break; 163 case FRV_OPERAND_ACC40SK : 164 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Sk, 0); 165 break; 166 case FRV_OPERAND_ACC40UI : 167 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Ui, 0); 168 break; 169 case FRV_OPERAND_ACC40UK : 170 print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Uk, 0); 171 break; 172 case FRV_OPERAND_ACCGI : 173 print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGi, 0); 174 break; 175 case FRV_OPERAND_ACCGK : 176 print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGk, 0); 177 break; 178 case FRV_OPERAND_CCI : 179 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CCi, 0); 180 break; 181 case FRV_OPERAND_CPRDOUBLEK : 182 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0); 183 break; 184 case FRV_OPERAND_CPRI : 185 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRi, 0); 186 break; 187 case FRV_OPERAND_CPRJ : 188 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRj, 0); 189 break; 190 case FRV_OPERAND_CPRK : 191 print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0); 192 break; 193 case FRV_OPERAND_CRI : 194 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRi, 0); 195 break; 196 case FRV_OPERAND_CRJ : 197 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj, 0); 198 break; 199 case FRV_OPERAND_CRJ_FLOAT : 200 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_float, 0); 201 break; 202 case FRV_OPERAND_CRJ_INT : 203 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_int, 0); 204 break; 205 case FRV_OPERAND_CRK : 206 print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRk, 0); 207 break; 208 case FRV_OPERAND_FCCI_1 : 209 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_1, 0); 210 break; 211 case FRV_OPERAND_FCCI_2 : 212 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_2, 0); 213 break; 214 case FRV_OPERAND_FCCI_3 : 215 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_3, 0); 216 break; 217 case FRV_OPERAND_FCCK : 218 print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCk, 0); 219 break; 220 case FRV_OPERAND_FRDOUBLEI : 221 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0); 222 break; 223 case FRV_OPERAND_FRDOUBLEJ : 224 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0); 225 break; 226 case FRV_OPERAND_FRDOUBLEK : 227 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0); 228 break; 229 case FRV_OPERAND_FRI : 230 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0); 231 break; 232 case FRV_OPERAND_FRINTI : 233 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0); 234 break; 235 case FRV_OPERAND_FRINTIEVEN : 236 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0); 237 break; 238 case FRV_OPERAND_FRINTJ : 239 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0); 240 break; 241 case FRV_OPERAND_FRINTJEVEN : 242 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0); 243 break; 244 case FRV_OPERAND_FRINTK : 245 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0); 246 break; 247 case FRV_OPERAND_FRINTKEVEN : 248 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0); 249 break; 250 case FRV_OPERAND_FRJ : 251 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0); 252 break; 253 case FRV_OPERAND_FRK : 254 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0); 255 break; 256 case FRV_OPERAND_FRKHI : 257 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0); 258 break; 259 case FRV_OPERAND_FRKLO : 260 print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0); 261 break; 262 case FRV_OPERAND_GRDOUBLEK : 263 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0); 264 break; 265 case FRV_OPERAND_GRI : 266 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRi, 0); 267 break; 268 case FRV_OPERAND_GRJ : 269 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRj, 0); 270 break; 271 case FRV_OPERAND_GRK : 272 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0); 273 break; 274 case FRV_OPERAND_GRKHI : 275 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0); 276 break; 277 case FRV_OPERAND_GRKLO : 278 print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0); 279 break; 280 case FRV_OPERAND_ICCI_1 : 281 print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_1, 0); 282 break; 283 case FRV_OPERAND_ICCI_2 : 284 print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_2, 0); 285 break; 286 case FRV_OPERAND_ICCI_3 : 287 print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_3, 0); 288 break; 289 case FRV_OPERAND_LI : 290 print_normal (cd, info, fields->f_LI, 0, pc, length); 291 break; 292 case FRV_OPERAND_AE : 293 print_normal (cd, info, fields->f_ae, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 294 break; 295 case FRV_OPERAND_CCOND : 296 print_normal (cd, info, fields->f_ccond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 297 break; 298 case FRV_OPERAND_COND : 299 print_normal (cd, info, fields->f_cond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 300 break; 301 case FRV_OPERAND_D12 : 302 print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); 303 break; 304 case FRV_OPERAND_DEBUG : 305 print_normal (cd, info, fields->f_debug, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 306 break; 307 case FRV_OPERAND_EIR : 308 print_normal (cd, info, fields->f_eir, 0, pc, length); 309 break; 310 case FRV_OPERAND_HINT : 311 print_normal (cd, info, fields->f_hint, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 312 break; 313 case FRV_OPERAND_HINT_NOT_TAKEN : 314 print_keyword (cd, info, & frv_cgen_opval_h_hint_not_taken, fields->f_hint, 0); 315 break; 316 case FRV_OPERAND_HINT_TAKEN : 317 print_keyword (cd, info, & frv_cgen_opval_h_hint_taken, fields->f_hint, 0); 318 break; 319 case FRV_OPERAND_LABEL16 : 320 print_address (cd, info, fields->f_label16, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); 321 break; 322 case FRV_OPERAND_LABEL24 : 323 print_address (cd, info, fields->f_label24, 0|(1<<CGEN_OPERAND_PCREL_ADDR)|(1<<CGEN_OPERAND_VIRTUAL), pc, length); 324 break; 325 case FRV_OPERAND_LOCK : 326 print_normal (cd, info, fields->f_lock, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 327 break; 328 case FRV_OPERAND_PACK : 329 print_keyword (cd, info, & frv_cgen_opval_h_pack, fields->f_pack, 0); 330 break; 331 case FRV_OPERAND_S10 : 332 print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 333 break; 334 case FRV_OPERAND_S12 : 335 print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 336 break; 337 case FRV_OPERAND_S16 : 338 print_normal (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 339 break; 340 case FRV_OPERAND_S5 : 341 print_normal (cd, info, fields->f_s5, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 342 break; 343 case FRV_OPERAND_S6 : 344 print_normal (cd, info, fields->f_s6, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 345 break; 346 case FRV_OPERAND_S6_1 : 347 print_normal (cd, info, fields->f_s6_1, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 348 break; 349 case FRV_OPERAND_SLO16 : 350 print_lo (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); 351 break; 352 case FRV_OPERAND_SPR : 353 print_spr (cd, info, & frv_cgen_opval_spr_names, fields->f_spr, 0|(1<<CGEN_OPERAND_VIRTUAL)); 354 break; 355 case FRV_OPERAND_U12 : 356 print_normal (cd, info, fields->f_u12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length); 357 break; 358 case FRV_OPERAND_U16 : 359 print_normal (cd, info, fields->f_u16, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 360 break; 361 case FRV_OPERAND_U6 : 362 print_normal (cd, info, fields->f_u6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length); 363 break; 364 case FRV_OPERAND_UHI16 : 365 print_hi (cd, info, fields->f_u16, 0, pc, length); 366 break; 367 case FRV_OPERAND_ULO16 : 368 print_lo (cd, info, fields->f_u16, 0, pc, length); 369 break; 370 371 default : 372 /* xgettext:c-format */ 373 fprintf (stderr, _("Unrecognized field %d while printing insn.\n"), 374 opindex); 375 abort (); 376 } 377} 378 379cgen_print_fn * const frv_cgen_print_handlers[] = 380{ 381 print_insn_normal, 382}; 383 384 385void 386frv_cgen_init_dis (cd) 387 CGEN_CPU_DESC cd; 388{ 389 frv_cgen_init_opcode_table (cd); 390 frv_cgen_init_ibld_table (cd); 391 cd->print_handlers = & frv_cgen_print_handlers[0]; 392 cd->print_operand = frv_cgen_print_operand; 393} 394 395 396/* Default print handler. */ 397 398static void 399print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 400 void *dis_info, 401 long value, 402 unsigned int attrs, 403 bfd_vma pc ATTRIBUTE_UNUSED, 404 int length ATTRIBUTE_UNUSED) 405{ 406 disassemble_info *info = (disassemble_info *) dis_info; 407 408#ifdef CGEN_PRINT_NORMAL 409 CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length); 410#endif 411 412 /* Print the operand as directed by the attributes. */ 413 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) 414 ; /* nothing to do */ 415 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) 416 (*info->fprintf_func) (info->stream, "%ld", value); 417 else 418 (*info->fprintf_func) (info->stream, "0x%lx", value); 419} 420 421/* Default address handler. */ 422 423static void 424print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 425 void *dis_info, 426 bfd_vma value, 427 unsigned int attrs, 428 bfd_vma pc ATTRIBUTE_UNUSED, 429 int length ATTRIBUTE_UNUSED) 430{ 431 disassemble_info *info = (disassemble_info *) dis_info; 432 433#ifdef CGEN_PRINT_ADDRESS 434 CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length); 435#endif 436 437 /* Print the operand as directed by the attributes. */ 438 if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) 439 ; /* nothing to do */ 440 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR)) 441 (*info->print_address_func) (value, info); 442 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR)) 443 (*info->print_address_func) (value, info); 444 else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) 445 (*info->fprintf_func) (info->stream, "%ld", (long) value); 446 else 447 (*info->fprintf_func) (info->stream, "0x%lx", (long) value); 448} 449 450/* Keyword print handler. */ 451 452static void 453print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 454 void *dis_info, 455 CGEN_KEYWORD *keyword_table, 456 long value, 457 unsigned int attrs ATTRIBUTE_UNUSED) 458{ 459 disassemble_info *info = (disassemble_info *) dis_info; 460 const CGEN_KEYWORD_ENTRY *ke; 461 462 ke = cgen_keyword_lookup_value (keyword_table, value); 463 if (ke != NULL) 464 (*info->fprintf_func) (info->stream, "%s", ke->name); 465 else 466 (*info->fprintf_func) (info->stream, "???"); 467} 468 469/* Default insn printer. 470 471 DIS_INFO is defined as `void *' so the disassembler needn't know anything 472 about disassemble_info. */ 473 474static void 475print_insn_normal (CGEN_CPU_DESC cd, 476 void *dis_info, 477 const CGEN_INSN *insn, 478 CGEN_FIELDS *fields, 479 bfd_vma pc, 480 int length) 481{ 482 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 483 disassemble_info *info = (disassemble_info *) dis_info; 484 const CGEN_SYNTAX_CHAR_TYPE *syn; 485 486 CGEN_INIT_PRINT (cd); 487 488 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) 489 { 490 if (CGEN_SYNTAX_MNEMONIC_P (*syn)) 491 { 492 (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn)); 493 continue; 494 } 495 if (CGEN_SYNTAX_CHAR_P (*syn)) 496 { 497 (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn)); 498 continue; 499 } 500 501 /* We have an operand. */ 502 frv_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info, 503 fields, CGEN_INSN_ATTRS (insn), pc, length); 504 } 505} 506 507/* Subroutine of print_insn. Reads an insn into the given buffers and updates 508 the extract info. 509 Returns 0 if all is well, non-zero otherwise. */ 510 511static int 512read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 513 bfd_vma pc, 514 disassemble_info *info, 515 char *buf, 516 int buflen, 517 CGEN_EXTRACT_INFO *ex_info, 518 unsigned long *insn_value) 519{ 520 int status = (*info->read_memory_func) (pc, buf, buflen, info); 521 if (status != 0) 522 { 523 (*info->memory_error_func) (status, pc, info); 524 return -1; 525 } 526 527 ex_info->dis_info = info; 528 ex_info->valid = (1 << buflen) - 1; 529 ex_info->insn_bytes = buf; 530 531 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG); 532 return 0; 533} 534 535/* Utility to print an insn. 536 BUF is the base part of the insn, target byte order, BUFLEN bytes long. 537 The result is the size of the insn in bytes or zero for an unknown insn 538 or -1 if an error occurs fetching data (memory_error_func will have 539 been called). */ 540 541static int 542print_insn (CGEN_CPU_DESC cd, 543 bfd_vma pc, 544 disassemble_info *info, 545 char *buf, 546 unsigned int buflen) 547{ 548 CGEN_INSN_INT insn_value; 549 const CGEN_INSN_LIST *insn_list; 550 CGEN_EXTRACT_INFO ex_info; 551 int basesize; 552 553 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */ 554 basesize = cd->base_insn_bitsize < buflen * 8 ? 555 cd->base_insn_bitsize : buflen * 8; 556 insn_value = cgen_get_insn_value (cd, buf, basesize); 557 558 559 /* Fill in ex_info fields like read_insn would. Don't actually call 560 read_insn, since the incoming buffer is already read (and possibly 561 modified a la m32r). */ 562 ex_info.valid = (1 << buflen) - 1; 563 ex_info.dis_info = info; 564 ex_info.insn_bytes = buf; 565 566 /* The instructions are stored in hash lists. 567 Pick the first one and keep trying until we find the right one. */ 568 569 insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value); 570 while (insn_list != NULL) 571 { 572 const CGEN_INSN *insn = insn_list->insn; 573 CGEN_FIELDS fields; 574 int length; 575 unsigned long insn_value_cropped; 576 577#ifdef CGEN_VALIDATE_INSN_SUPPORTED 578 /* Not needed as insn shouldn't be in hash lists if not supported. */ 579 /* Supported by this cpu? */ 580 if (! frv_cgen_insn_supported (cd, insn)) 581 { 582 insn_list = CGEN_DIS_NEXT_INSN (insn_list); 583 continue; 584 } 585#endif 586 587 /* Basic bit mask must be correct. */ 588 /* ??? May wish to allow target to defer this check until the extract 589 handler. */ 590 591 /* Base size may exceed this instruction's size. Extract the 592 relevant part from the buffer. */ 593 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen && 594 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) 595 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn), 596 info->endian == BFD_ENDIAN_BIG); 597 else 598 insn_value_cropped = insn_value; 599 600 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn)) 601 == CGEN_INSN_BASE_VALUE (insn)) 602 { 603 /* Printing is handled in two passes. The first pass parses the 604 machine insn and extracts the fields. The second pass prints 605 them. */ 606 607 /* Make sure the entire insn is loaded into insn_value, if it 608 can fit. */ 609 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) && 610 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) 611 { 612 unsigned long full_insn_value; 613 int rc = read_insn (cd, pc, info, buf, 614 CGEN_INSN_BITSIZE (insn) / 8, 615 & ex_info, & full_insn_value); 616 if (rc != 0) 617 return rc; 618 length = CGEN_EXTRACT_FN (cd, insn) 619 (cd, insn, &ex_info, full_insn_value, &fields, pc); 620 } 621 else 622 length = CGEN_EXTRACT_FN (cd, insn) 623 (cd, insn, &ex_info, insn_value_cropped, &fields, pc); 624 625 /* length < 0 -> error */ 626 if (length < 0) 627 return length; 628 if (length > 0) 629 { 630 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length); 631 /* length is in bits, result is in bytes */ 632 return length / 8; 633 } 634 } 635 636 insn_list = CGEN_DIS_NEXT_INSN (insn_list); 637 } 638 639 return 0; 640} 641 642/* Default value for CGEN_PRINT_INSN. 643 The result is the size of the insn in bytes or zero for an unknown insn 644 or -1 if an error occured fetching bytes. */ 645 646#ifndef CGEN_PRINT_INSN 647#define CGEN_PRINT_INSN default_print_insn 648#endif 649 650static int 651default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info) 652{ 653 char buf[CGEN_MAX_INSN_SIZE]; 654 int buflen; 655 int status; 656 657 /* Attempt to read the base part of the insn. */ 658 buflen = cd->base_insn_bitsize / 8; 659 status = (*info->read_memory_func) (pc, buf, buflen, info); 660 661 /* Try again with the minimum part, if min < base. */ 662 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) 663 { 664 buflen = cd->min_insn_bitsize / 8; 665 status = (*info->read_memory_func) (pc, buf, buflen, info); 666 } 667 668 if (status != 0) 669 { 670 (*info->memory_error_func) (status, pc, info); 671 return -1; 672 } 673 674 return print_insn (cd, pc, info, buf, buflen); 675} 676 677/* Main entry point. 678 Print one instruction from PC on INFO->STREAM. 679 Return the size of the instruction (in bytes). */ 680 681typedef struct cpu_desc_list { 682 struct cpu_desc_list *next; 683 int isa; 684 int mach; 685 int endian; 686 CGEN_CPU_DESC cd; 687} cpu_desc_list; 688 689int 690print_insn_frv (bfd_vma pc, disassemble_info *info) 691{ 692 static cpu_desc_list *cd_list = 0; 693 cpu_desc_list *cl = 0; 694 static CGEN_CPU_DESC cd = 0; 695 static int prev_isa; 696 static int prev_mach; 697 static int prev_endian; 698 int length; 699 int isa,mach; 700 int endian = (info->endian == BFD_ENDIAN_BIG 701 ? CGEN_ENDIAN_BIG 702 : CGEN_ENDIAN_LITTLE); 703 enum bfd_architecture arch; 704 705 /* ??? gdb will set mach but leave the architecture as "unknown" */ 706#ifndef CGEN_BFD_ARCH 707#define CGEN_BFD_ARCH bfd_arch_frv 708#endif 709 arch = info->arch; 710 if (arch == bfd_arch_unknown) 711 arch = CGEN_BFD_ARCH; 712 713 /* There's no standard way to compute the machine or isa number 714 so we leave it to the target. */ 715#ifdef CGEN_COMPUTE_MACH 716 mach = CGEN_COMPUTE_MACH (info); 717#else 718 mach = info->mach; 719#endif 720 721#ifdef CGEN_COMPUTE_ISA 722 isa = CGEN_COMPUTE_ISA (info); 723#else 724 isa = info->insn_sets; 725#endif 726 727 /* If we've switched cpu's, try to find a handle we've used before */ 728 if (cd 729 && (isa != prev_isa 730 || mach != prev_mach 731 || endian != prev_endian)) 732 { 733 cd = 0; 734 for (cl = cd_list; cl; cl = cl->next) 735 { 736 if (cl->isa == isa && 737 cl->mach == mach && 738 cl->endian == endian) 739 { 740 cd = cl->cd; 741 break; 742 } 743 } 744 } 745 746 /* If we haven't initialized yet, initialize the opcode table. */ 747 if (! cd) 748 { 749 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach); 750 const char *mach_name; 751 752 if (!arch_type) 753 abort (); 754 mach_name = arch_type->printable_name; 755 756 prev_isa = isa; 757 prev_mach = mach; 758 prev_endian = endian; 759 cd = frv_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa, 760 CGEN_CPU_OPEN_BFDMACH, mach_name, 761 CGEN_CPU_OPEN_ENDIAN, prev_endian, 762 CGEN_CPU_OPEN_END); 763 if (!cd) 764 abort (); 765 766 /* save this away for future reference */ 767 cl = xmalloc (sizeof (struct cpu_desc_list)); 768 cl->cd = cd; 769 cl->isa = isa; 770 cl->mach = mach; 771 cl->endian = endian; 772 cl->next = cd_list; 773 cd_list = cl; 774 775 frv_cgen_init_dis (cd); 776 } 777 778 /* We try to have as much common code as possible. 779 But at this point some targets need to take over. */ 780 /* ??? Some targets may need a hook elsewhere. Try to avoid this, 781 but if not possible try to move this hook elsewhere rather than 782 have two hooks. */ 783 length = CGEN_PRINT_INSN (cd, pc, info); 784 if (length > 0) 785 return length; 786 if (length < 0) 787 return -1; 788 789 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); 790 return cd->default_insn_bitsize / 8; 791} 792