155682Smarkm/* Disassembler interface for targets using CGEN. -*- C -*- 257416Smarkm CGEN: Cpu tools GENerator 355682Smarkm 455682Smarkm THIS FILE IS MACHINE GENERATED WITH CGEN. 555682Smarkm - the resultant file is machine generated, cgen-dis.in isn't 655682Smarkm 755682Smarkm Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007, 855682Smarkm 2008, 2010 Free Software Foundation, Inc. 955682Smarkm 1055682Smarkm This file is part of libopcodes. 1155682Smarkm 1255682Smarkm This library is free software; you can redistribute it and/or modify 1355682Smarkm it under the terms of the GNU General Public License as published by 1455682Smarkm the Free Software Foundation; either version 3, or (at your option) 1555682Smarkm any later version. 1655682Smarkm 1755682Smarkm It is distributed in the hope that it will be useful, but WITHOUT 1855682Smarkm ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 1955682Smarkm or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 2055682Smarkm License for more details. 2155682Smarkm 2255682Smarkm You should have received a copy of the GNU General Public License 2355682Smarkm along with this program; if not, write to the Free Software Foundation, Inc., 2455682Smarkm 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 2555682Smarkm 2655682Smarkm/* ??? Eventually more and more of this stuff can go to cpu-independent files. 2755682Smarkm Keep that in mind. */ 2855682Smarkm 2955682Smarkm#include "sysdep.h" 3055682Smarkm#include <stdio.h> 3155682Smarkm#include "ansidecl.h" 3255682Smarkm#include "dis-asm.h" 3355682Smarkm#include "bfd.h" 3457419Smarkm#include "symcat.h" 3555682Smarkm#include "libiberty.h" 3655682Smarkm#include "lm32-desc.h" 3755682Smarkm#include "lm32-opc.h" 3855682Smarkm#include "opintl.h" 3955682Smarkm 4055682Smarkm/* Default text to print if an instruction isn't recognized. */ 4155682Smarkm#define UNKNOWN_INSN_MSG _("*unknown*") 4255682Smarkm 4355682Smarkmstatic void print_normal 4455682Smarkm (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int); 4555682Smarkmstatic void print_address 4655682Smarkm (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED; 4755682Smarkmstatic void print_keyword 4855682Smarkm (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED; 4955682Smarkmstatic void print_insn_normal 5055682Smarkm (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int); 5155682Smarkmstatic int print_insn 5255682Smarkm (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned); 5355682Smarkmstatic int default_print_insn 5455682Smarkm (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED; 5555682Smarkmstatic int read_insn 5655682Smarkm (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *, 5755682Smarkm unsigned long *); 5855682Smarkm 5955682Smarkm/* -- disassembler routines inserted here. */ 6055682Smarkm 6155682Smarkm 6255682Smarkmvoid lm32_cgen_print_operand 6355682Smarkm (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int); 6455682Smarkm 6555682Smarkm/* Main entry point for printing operands. 6655682Smarkm XINFO is a `void *' and not a `disassemble_info *' to not put a requirement 6755682Smarkm of dis-asm.h on cgen.h. 6855682Smarkm 6955682Smarkm This function is basically just a big switch statement. Earlier versions 7055682Smarkm used tables to look up the function to use, but 7155682Smarkm - if the table contains both assembler and disassembler functions then 7255682Smarkm the disassembler contains much of the assembler and vice-versa, 7355682Smarkm - there's a lot of inlining possibilities as things grow, 7455682Smarkm - using a switch statement avoids the function call overhead. 7555682Smarkm 7655682Smarkm This function could be moved into `print_insn_normal', but keeping it 7755682Smarkm separate makes clear the interface between `print_insn_normal' and each of 7855682Smarkm the handlers. */ 7955682Smarkm 8055682Smarkmvoid 8155682Smarkmlm32_cgen_print_operand (CGEN_CPU_DESC cd, 8255682Smarkm int opindex, 8355682Smarkm void * xinfo, 8455682Smarkm CGEN_FIELDS *fields, 8555682Smarkm void const *attrs ATTRIBUTE_UNUSED, 8655682Smarkm bfd_vma pc, 8755682Smarkm int length) 8855682Smarkm{ 8955682Smarkm disassemble_info *info = (disassemble_info *) xinfo; 9055682Smarkm 9155682Smarkm switch (opindex) 9255682Smarkm { 9355682Smarkm case LM32_OPERAND_BRANCH : 9455682Smarkm print_address (cd, info, fields->f_branch, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); 9555682Smarkm break; 9655682Smarkm case LM32_OPERAND_CALL : 9755682Smarkm print_address (cd, info, fields->f_call, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); 9855682Smarkm break; 9955682Smarkm case LM32_OPERAND_CSR : 10055682Smarkm print_keyword (cd, info, & lm32_cgen_opval_h_csr, fields->f_csr, 0); 10155682Smarkm break; 10255682Smarkm case LM32_OPERAND_EXCEPTION : 10355682Smarkm print_normal (cd, info, fields->f_exception, 0, pc, length); 10455682Smarkm break; 10555682Smarkm case LM32_OPERAND_GOT16 : 10655682Smarkm print_normal (cd, info, fields->f_imm, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); 10757416Smarkm break; 10857416Smarkm case LM32_OPERAND_GOTOFFHI16 : 10957416Smarkm print_normal (cd, info, fields->f_imm, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); 11057416Smarkm break; 11155682Smarkm case LM32_OPERAND_GOTOFFLO16 : 11255682Smarkm print_normal (cd, info, fields->f_imm, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); 11355682Smarkm break; 11455682Smarkm case LM32_OPERAND_GP16 : 11555682Smarkm print_normal (cd, info, fields->f_imm, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); 11655682Smarkm break; 11755682Smarkm case LM32_OPERAND_HI16 : 11855682Smarkm print_normal (cd, info, fields->f_uimm, 0, pc, length); 11955682Smarkm break; 12055682Smarkm case LM32_OPERAND_IMM : 12155682Smarkm print_normal (cd, info, fields->f_imm, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); 12255682Smarkm break; 12355682Smarkm case LM32_OPERAND_LO16 : 12455682Smarkm print_normal (cd, info, fields->f_uimm, 0, pc, length); 12555682Smarkm break; 12655682Smarkm case LM32_OPERAND_R0 : 12755682Smarkm print_keyword (cd, info, & lm32_cgen_opval_h_gr, fields->f_r0, 0); 12855682Smarkm break; 12955682Smarkm case LM32_OPERAND_R1 : 13055682Smarkm print_keyword (cd, info, & lm32_cgen_opval_h_gr, fields->f_r1, 0); 13155682Smarkm break; 13255682Smarkm case LM32_OPERAND_R2 : 13355682Smarkm print_keyword (cd, info, & lm32_cgen_opval_h_gr, fields->f_r2, 0); 13455682Smarkm break; 13555682Smarkm case LM32_OPERAND_SHIFT : 13655682Smarkm print_normal (cd, info, fields->f_shift, 0, pc, length); 13755682Smarkm break; 13855682Smarkm case LM32_OPERAND_UIMM : 13955682Smarkm print_normal (cd, info, fields->f_uimm, 0, pc, length); 14055682Smarkm break; 14155682Smarkm case LM32_OPERAND_USER : 14255682Smarkm print_normal (cd, info, fields->f_user, 0, pc, length); 14355682Smarkm break; 14455682Smarkm 14555682Smarkm default : 14655682Smarkm /* xgettext:c-format */ 14755682Smarkm fprintf (stderr, _("Unrecognized field %d while printing insn.\n"), 14855682Smarkm opindex); 14955682Smarkm abort (); 15055682Smarkm } 15155682Smarkm} 15255682Smarkm 15355682Smarkmcgen_print_fn * const lm32_cgen_print_handlers[] = 15455682Smarkm{ 15555682Smarkm print_insn_normal, 15655682Smarkm}; 15755682Smarkm 15855682Smarkm 15955682Smarkmvoid 16055682Smarkmlm32_cgen_init_dis (CGEN_CPU_DESC cd) 16155682Smarkm{ 16255682Smarkm lm32_cgen_init_opcode_table (cd); 16355682Smarkm lm32_cgen_init_ibld_table (cd); 16455682Smarkm cd->print_handlers = & lm32_cgen_print_handlers[0]; 16555682Smarkm cd->print_operand = lm32_cgen_print_operand; 16655682Smarkm} 16755682Smarkm 16855682Smarkm 16955682Smarkm/* Default print handler. */ 17055682Smarkm 17155682Smarkmstatic void 17255682Smarkmprint_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 17355682Smarkm void *dis_info, 17455682Smarkm long value, 17555682Smarkm unsigned int attrs, 17655682Smarkm bfd_vma pc ATTRIBUTE_UNUSED, 17755682Smarkm int length ATTRIBUTE_UNUSED) 17855682Smarkm{ 17955682Smarkm disassemble_info *info = (disassemble_info *) dis_info; 18055682Smarkm 18155682Smarkm /* Print the operand as directed by the attributes. */ 18255682Smarkm if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) 18355682Smarkm ; /* nothing to do */ 18455682Smarkm else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) 18555682Smarkm (*info->fprintf_func) (info->stream, "%ld", value); 18655682Smarkm else 18755682Smarkm (*info->fprintf_func) (info->stream, "0x%lx", value); 18855682Smarkm} 18955682Smarkm 19055682Smarkm/* Default address handler. */ 19155682Smarkm 19255682Smarkmstatic void 19355682Smarkmprint_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 19455682Smarkm void *dis_info, 19555682Smarkm bfd_vma value, 19655682Smarkm unsigned int attrs, 19755682Smarkm bfd_vma pc ATTRIBUTE_UNUSED, 19855682Smarkm int length ATTRIBUTE_UNUSED) 19955682Smarkm{ 20055682Smarkm disassemble_info *info = (disassemble_info *) dis_info; 20155682Smarkm 20255682Smarkm /* Print the operand as directed by the attributes. */ 20355682Smarkm if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) 20455682Smarkm ; /* Nothing to do. */ 20555682Smarkm else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR)) 20655682Smarkm (*info->print_address_func) (value, info); 20755682Smarkm else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR)) 20855682Smarkm (*info->print_address_func) (value, info); 20955682Smarkm else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) 21055682Smarkm (*info->fprintf_func) (info->stream, "%ld", (long) value); 21155682Smarkm else 21255682Smarkm (*info->fprintf_func) (info->stream, "0x%lx", (long) value); 21355682Smarkm} 21455682Smarkm 21555682Smarkm/* Keyword print handler. */ 21655682Smarkm 21755682Smarkmstatic void 21855682Smarkmprint_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 21955682Smarkm void *dis_info, 22055682Smarkm CGEN_KEYWORD *keyword_table, 22155682Smarkm long value, 22255682Smarkm unsigned int attrs ATTRIBUTE_UNUSED) 22355682Smarkm{ 22455682Smarkm disassemble_info *info = (disassemble_info *) dis_info; 22555682Smarkm const CGEN_KEYWORD_ENTRY *ke; 22655682Smarkm 22755682Smarkm ke = cgen_keyword_lookup_value (keyword_table, value); 22855682Smarkm if (ke != NULL) 22955682Smarkm (*info->fprintf_func) (info->stream, "%s", ke->name); 23055682Smarkm else 23155682Smarkm (*info->fprintf_func) (info->stream, "???"); 23255682Smarkm} 23355682Smarkm 23455682Smarkm/* Default insn printer. 23555682Smarkm 23655682Smarkm DIS_INFO is defined as `void *' so the disassembler needn't know anything 23755682Smarkm about disassemble_info. */ 23855682Smarkm 23955682Smarkmstatic void 24055682Smarkmprint_insn_normal (CGEN_CPU_DESC cd, 24155682Smarkm void *dis_info, 24255682Smarkm const CGEN_INSN *insn, 24355682Smarkm CGEN_FIELDS *fields, 24455682Smarkm bfd_vma pc, 24555682Smarkm int length) 24655682Smarkm{ 24755682Smarkm const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 24855682Smarkm disassemble_info *info = (disassemble_info *) dis_info; 24955682Smarkm const CGEN_SYNTAX_CHAR_TYPE *syn; 25055682Smarkm 25155682Smarkm CGEN_INIT_PRINT (cd); 25255682Smarkm 25355682Smarkm for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) 25455682Smarkm { 25555682Smarkm if (CGEN_SYNTAX_MNEMONIC_P (*syn)) 25655682Smarkm { 25755682Smarkm (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn)); 25855682Smarkm continue; 25955682Smarkm } 26055682Smarkm if (CGEN_SYNTAX_CHAR_P (*syn)) 26155682Smarkm { 26255682Smarkm (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn)); 26355682Smarkm continue; 26455682Smarkm } 26555682Smarkm 26655682Smarkm /* We have an operand. */ 26755682Smarkm lm32_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info, 26855682Smarkm fields, CGEN_INSN_ATTRS (insn), pc, length); 26955682Smarkm } 27055682Smarkm} 27155682Smarkm 27255682Smarkm/* Subroutine of print_insn. Reads an insn into the given buffers and updates 27355682Smarkm the extract info. 27455682Smarkm Returns 0 if all is well, non-zero otherwise. */ 27555682Smarkm 27655682Smarkmstatic int 27755682Smarkmread_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 27855682Smarkm bfd_vma pc, 27955682Smarkm disassemble_info *info, 28055682Smarkm bfd_byte *buf, 28155682Smarkm int buflen, 28255682Smarkm CGEN_EXTRACT_INFO *ex_info, 28355682Smarkm unsigned long *insn_value) 28455682Smarkm{ 28555682Smarkm int status = (*info->read_memory_func) (pc, buf, buflen, info); 28655682Smarkm 28757416Smarkm if (status != 0) 28857416Smarkm { 28957416Smarkm (*info->memory_error_func) (status, pc, info); 29057416Smarkm return -1; 29157416Smarkm } 29257416Smarkm 29357419Smarkm ex_info->dis_info = info; 29455682Smarkm ex_info->valid = (1 << buflen) - 1; 295 ex_info->insn_bytes = buf; 296 297 *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG); 298 return 0; 299} 300 301/* Utility to print an insn. 302 BUF is the base part of the insn, target byte order, BUFLEN bytes long. 303 The result is the size of the insn in bytes or zero for an unknown insn 304 or -1 if an error occurs fetching data (memory_error_func will have 305 been called). */ 306 307static int 308print_insn (CGEN_CPU_DESC cd, 309 bfd_vma pc, 310 disassemble_info *info, 311 bfd_byte *buf, 312 unsigned int buflen) 313{ 314 CGEN_INSN_INT insn_value; 315 const CGEN_INSN_LIST *insn_list; 316 CGEN_EXTRACT_INFO ex_info; 317 int basesize; 318 319 /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */ 320 basesize = cd->base_insn_bitsize < buflen * 8 ? 321 cd->base_insn_bitsize : buflen * 8; 322 insn_value = cgen_get_insn_value (cd, buf, basesize); 323 324 325 /* Fill in ex_info fields like read_insn would. Don't actually call 326 read_insn, since the incoming buffer is already read (and possibly 327 modified a la m32r). */ 328 ex_info.valid = (1 << buflen) - 1; 329 ex_info.dis_info = info; 330 ex_info.insn_bytes = buf; 331 332 /* The instructions are stored in hash lists. 333 Pick the first one and keep trying until we find the right one. */ 334 335 insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value); 336 while (insn_list != NULL) 337 { 338 const CGEN_INSN *insn = insn_list->insn; 339 CGEN_FIELDS fields; 340 int length; 341 unsigned long insn_value_cropped; 342 343#ifdef CGEN_VALIDATE_INSN_SUPPORTED 344 /* Not needed as insn shouldn't be in hash lists if not supported. */ 345 /* Supported by this cpu? */ 346 if (! lm32_cgen_insn_supported (cd, insn)) 347 { 348 insn_list = CGEN_DIS_NEXT_INSN (insn_list); 349 continue; 350 } 351#endif 352 353 /* Basic bit mask must be correct. */ 354 /* ??? May wish to allow target to defer this check until the extract 355 handler. */ 356 357 /* Base size may exceed this instruction's size. Extract the 358 relevant part from the buffer. */ 359 if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen && 360 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) 361 insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn), 362 info->endian == BFD_ENDIAN_BIG); 363 else 364 insn_value_cropped = insn_value; 365 366 if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn)) 367 == CGEN_INSN_BASE_VALUE (insn)) 368 { 369 /* Printing is handled in two passes. The first pass parses the 370 machine insn and extracts the fields. The second pass prints 371 them. */ 372 373 /* Make sure the entire insn is loaded into insn_value, if it 374 can fit. */ 375 if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) && 376 (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) 377 { 378 unsigned long full_insn_value; 379 int rc = read_insn (cd, pc, info, buf, 380 CGEN_INSN_BITSIZE (insn) / 8, 381 & ex_info, & full_insn_value); 382 if (rc != 0) 383 return rc; 384 length = CGEN_EXTRACT_FN (cd, insn) 385 (cd, insn, &ex_info, full_insn_value, &fields, pc); 386 } 387 else 388 length = CGEN_EXTRACT_FN (cd, insn) 389 (cd, insn, &ex_info, insn_value_cropped, &fields, pc); 390 391 /* Length < 0 -> error. */ 392 if (length < 0) 393 return length; 394 if (length > 0) 395 { 396 CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length); 397 /* Length is in bits, result is in bytes. */ 398 return length / 8; 399 } 400 } 401 402 insn_list = CGEN_DIS_NEXT_INSN (insn_list); 403 } 404 405 return 0; 406} 407 408/* Default value for CGEN_PRINT_INSN. 409 The result is the size of the insn in bytes or zero for an unknown insn 410 or -1 if an error occured fetching bytes. */ 411 412#ifndef CGEN_PRINT_INSN 413#define CGEN_PRINT_INSN default_print_insn 414#endif 415 416static int 417default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info) 418{ 419 bfd_byte buf[CGEN_MAX_INSN_SIZE]; 420 int buflen; 421 int status; 422 423 /* Attempt to read the base part of the insn. */ 424 buflen = cd->base_insn_bitsize / 8; 425 status = (*info->read_memory_func) (pc, buf, buflen, info); 426 427 /* Try again with the minimum part, if min < base. */ 428 if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) 429 { 430 buflen = cd->min_insn_bitsize / 8; 431 status = (*info->read_memory_func) (pc, buf, buflen, info); 432 } 433 434 if (status != 0) 435 { 436 (*info->memory_error_func) (status, pc, info); 437 return -1; 438 } 439 440 return print_insn (cd, pc, info, buf, buflen); 441} 442 443/* Main entry point. 444 Print one instruction from PC on INFO->STREAM. 445 Return the size of the instruction (in bytes). */ 446 447typedef struct cpu_desc_list 448{ 449 struct cpu_desc_list *next; 450 CGEN_BITSET *isa; 451 int mach; 452 int endian; 453 CGEN_CPU_DESC cd; 454} cpu_desc_list; 455 456int 457print_insn_lm32 (bfd_vma pc, disassemble_info *info) 458{ 459 static cpu_desc_list *cd_list = 0; 460 cpu_desc_list *cl = 0; 461 static CGEN_CPU_DESC cd = 0; 462 static CGEN_BITSET *prev_isa; 463 static int prev_mach; 464 static int prev_endian; 465 int length; 466 CGEN_BITSET *isa; 467 int mach; 468 int endian = (info->endian == BFD_ENDIAN_BIG 469 ? CGEN_ENDIAN_BIG 470 : CGEN_ENDIAN_LITTLE); 471 enum bfd_architecture arch; 472 473 /* ??? gdb will set mach but leave the architecture as "unknown" */ 474#ifndef CGEN_BFD_ARCH 475#define CGEN_BFD_ARCH bfd_arch_lm32 476#endif 477 arch = info->arch; 478 if (arch == bfd_arch_unknown) 479 arch = CGEN_BFD_ARCH; 480 481 /* There's no standard way to compute the machine or isa number 482 so we leave it to the target. */ 483#ifdef CGEN_COMPUTE_MACH 484 mach = CGEN_COMPUTE_MACH (info); 485#else 486 mach = info->mach; 487#endif 488 489#ifdef CGEN_COMPUTE_ISA 490 { 491 static CGEN_BITSET *permanent_isa; 492 493 if (!permanent_isa) 494 permanent_isa = cgen_bitset_create (MAX_ISAS); 495 isa = permanent_isa; 496 cgen_bitset_clear (isa); 497 cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info)); 498 } 499#else 500 isa = info->insn_sets; 501#endif 502 503 /* If we've switched cpu's, try to find a handle we've used before */ 504 if (cd 505 && (cgen_bitset_compare (isa, prev_isa) != 0 506 || mach != prev_mach 507 || endian != prev_endian)) 508 { 509 cd = 0; 510 for (cl = cd_list; cl; cl = cl->next) 511 { 512 if (cgen_bitset_compare (cl->isa, isa) == 0 && 513 cl->mach == mach && 514 cl->endian == endian) 515 { 516 cd = cl->cd; 517 prev_isa = cd->isas; 518 break; 519 } 520 } 521 } 522 523 /* If we haven't initialized yet, initialize the opcode table. */ 524 if (! cd) 525 { 526 const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach); 527 const char *mach_name; 528 529 if (!arch_type) 530 abort (); 531 mach_name = arch_type->printable_name; 532 533 prev_isa = cgen_bitset_copy (isa); 534 prev_mach = mach; 535 prev_endian = endian; 536 cd = lm32_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa, 537 CGEN_CPU_OPEN_BFDMACH, mach_name, 538 CGEN_CPU_OPEN_ENDIAN, prev_endian, 539 CGEN_CPU_OPEN_END); 540 if (!cd) 541 abort (); 542 543 /* Save this away for future reference. */ 544 cl = xmalloc (sizeof (struct cpu_desc_list)); 545 cl->cd = cd; 546 cl->isa = prev_isa; 547 cl->mach = mach; 548 cl->endian = endian; 549 cl->next = cd_list; 550 cd_list = cl; 551 552 lm32_cgen_init_dis (cd); 553 } 554 555 /* We try to have as much common code as possible. 556 But at this point some targets need to take over. */ 557 /* ??? Some targets may need a hook elsewhere. Try to avoid this, 558 but if not possible try to move this hook elsewhere rather than 559 have two hooks. */ 560 length = CGEN_PRINT_INSN (cd, pc, info); 561 if (length > 0) 562 return length; 563 if (length < 0) 564 return -1; 565 566 (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); 567 return cd->default_insn_bitsize / 8; 568} 569