| 1 | /* Disassembler interface for targets using CGEN. -*- C -*- |
| 2 | CGEN: Cpu tools GENerator |
| 3 | |
| 4 | THIS FILE IS MACHINE GENERATED WITH CGEN. |
| 5 | - the resultant file is machine generated, cgen-dis.in isn't |
| 6 | |
| 7 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007, |
| 8 | 2008 Free Software Foundation, Inc. |
| 9 | |
| 10 | This file is part of libopcodes. |
| 11 | |
| 12 | This library is free software; you can redistribute it and/or modify |
| 13 | it under the terms of the GNU General Public License as published by |
| 14 | the Free Software Foundation; either version 3, or (at your option) |
| 15 | any later version. |
| 16 | |
| 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. |
| 21 | |
| 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. */ |
| 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 "mt-desc.h" |
| 37 | #include "mt-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 |
| 44 | (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int); |
| 45 | static void print_address |
| 46 | (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED; |
| 47 | static void print_keyword |
| 48 | (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED; |
| 49 | static void print_insn_normal |
| 50 | (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int); |
| 51 | static int print_insn |
| 52 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned); |
| 53 | static int default_print_insn |
| 54 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED; |
| 55 | static int read_insn |
| 56 | (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *, |
| 57 | unsigned long *); |
| 58 | \f |
| 59 | /* -- disassembler routines inserted here. */ |
| 60 | |
| 61 | /* -- dis.c */ |
| 62 | static void print_dollarhex (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int); |
| 63 | static void print_pcrel (CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int); |
| 64 | |
| 65 | static void |
| 66 | print_dollarhex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
| 67 | void * dis_info, |
| 68 | long value, |
| 69 | unsigned int attrs ATTRIBUTE_UNUSED, |
| 70 | bfd_vma pc ATTRIBUTE_UNUSED, |
| 71 | int length ATTRIBUTE_UNUSED) |
| 72 | { |
| 73 | disassemble_info *info = (disassemble_info *) dis_info; |
| 74 | |
| 75 | info->fprintf_func (info->stream, "$%lx", value); |
| 76 | |
| 77 | if (0) |
| 78 | print_normal (cd, dis_info, value, attrs, pc, length); |
| 79 | } |
| 80 | |
| 81 | static void |
| 82 | print_pcrel (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
| 83 | void * dis_info, |
| 84 | long value, |
| 85 | unsigned int attrs ATTRIBUTE_UNUSED, |
| 86 | bfd_vma pc ATTRIBUTE_UNUSED, |
| 87 | int length ATTRIBUTE_UNUSED) |
| 88 | { |
| 89 | print_address (cd, dis_info, value + pc, attrs, pc, length); |
| 90 | } |
| 91 | |
| 92 | /* -- */ |
| 93 | |
| 94 | void mt_cgen_print_operand |
| 95 | (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int); |
| 96 | |
| 97 | /* Main entry point for printing operands. |
| 98 | XINFO is a `void *' and not a `disassemble_info *' to not put a requirement |
| 99 | of dis-asm.h on cgen.h. |
| 100 | |
| 101 | This function is basically just a big switch statement. Earlier versions |
| 102 | used tables to look up the function to use, but |
| 103 | - if the table contains both assembler and disassembler functions then |
| 104 | the disassembler contains much of the assembler and vice-versa, |
| 105 | - there's a lot of inlining possibilities as things grow, |
| 106 | - using a switch statement avoids the function call overhead. |
| 107 | |
| 108 | This function could be moved into `print_insn_normal', but keeping it |
| 109 | separate makes clear the interface between `print_insn_normal' and each of |
| 110 | the handlers. */ |
| 111 | |
| 112 | void |
| 113 | mt_cgen_print_operand (CGEN_CPU_DESC cd, |
| 114 | int opindex, |
| 115 | void * xinfo, |
| 116 | CGEN_FIELDS *fields, |
| 117 | void const *attrs ATTRIBUTE_UNUSED, |
| 118 | bfd_vma pc, |
| 119 | int length) |
| 120 | { |
| 121 | disassemble_info *info = (disassemble_info *) xinfo; |
| 122 | |
| 123 | switch (opindex) |
| 124 | { |
| 125 | case MT_OPERAND_A23 : |
| 126 | print_dollarhex (cd, info, fields->f_a23, 0, pc, length); |
| 127 | break; |
| 128 | case MT_OPERAND_BALL : |
| 129 | print_dollarhex (cd, info, fields->f_ball, 0, pc, length); |
| 130 | break; |
| 131 | case MT_OPERAND_BALL2 : |
| 132 | print_dollarhex (cd, info, fields->f_ball2, 0, pc, length); |
| 133 | break; |
| 134 | case MT_OPERAND_BANKADDR : |
| 135 | print_dollarhex (cd, info, fields->f_bankaddr, 0, pc, length); |
| 136 | break; |
| 137 | case MT_OPERAND_BRC : |
| 138 | print_dollarhex (cd, info, fields->f_brc, 0, pc, length); |
| 139 | break; |
| 140 | case MT_OPERAND_BRC2 : |
| 141 | print_dollarhex (cd, info, fields->f_brc2, 0, pc, length); |
| 142 | break; |
| 143 | case MT_OPERAND_CB1INCR : |
| 144 | print_dollarhex (cd, info, fields->f_cb1incr, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); |
| 145 | break; |
| 146 | case MT_OPERAND_CB1SEL : |
| 147 | print_dollarhex (cd, info, fields->f_cb1sel, 0, pc, length); |
| 148 | break; |
| 149 | case MT_OPERAND_CB2INCR : |
| 150 | print_dollarhex (cd, info, fields->f_cb2incr, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); |
| 151 | break; |
| 152 | case MT_OPERAND_CB2SEL : |
| 153 | print_dollarhex (cd, info, fields->f_cb2sel, 0, pc, length); |
| 154 | break; |
| 155 | case MT_OPERAND_CBRB : |
| 156 | print_dollarhex (cd, info, fields->f_cbrb, 0, pc, length); |
| 157 | break; |
| 158 | case MT_OPERAND_CBS : |
| 159 | print_dollarhex (cd, info, fields->f_cbs, 0, pc, length); |
| 160 | break; |
| 161 | case MT_OPERAND_CBX : |
| 162 | print_dollarhex (cd, info, fields->f_cbx, 0, pc, length); |
| 163 | break; |
| 164 | case MT_OPERAND_CCB : |
| 165 | print_dollarhex (cd, info, fields->f_ccb, 0, pc, length); |
| 166 | break; |
| 167 | case MT_OPERAND_CDB : |
| 168 | print_dollarhex (cd, info, fields->f_cdb, 0, pc, length); |
| 169 | break; |
| 170 | case MT_OPERAND_CELL : |
| 171 | print_dollarhex (cd, info, fields->f_cell, 0, pc, length); |
| 172 | break; |
| 173 | case MT_OPERAND_COLNUM : |
| 174 | print_dollarhex (cd, info, fields->f_colnum, 0, pc, length); |
| 175 | break; |
| 176 | case MT_OPERAND_CONTNUM : |
| 177 | print_dollarhex (cd, info, fields->f_contnum, 0, pc, length); |
| 178 | break; |
| 179 | case MT_OPERAND_CR : |
| 180 | print_dollarhex (cd, info, fields->f_cr, 0, pc, length); |
| 181 | break; |
| 182 | case MT_OPERAND_CTXDISP : |
| 183 | print_dollarhex (cd, info, fields->f_ctxdisp, 0, pc, length); |
| 184 | break; |
| 185 | case MT_OPERAND_DUP : |
| 186 | print_dollarhex (cd, info, fields->f_dup, 0, pc, length); |
| 187 | break; |
| 188 | case MT_OPERAND_FBDISP : |
| 189 | print_dollarhex (cd, info, fields->f_fbdisp, 0, pc, length); |
| 190 | break; |
| 191 | case MT_OPERAND_FBINCR : |
| 192 | print_dollarhex (cd, info, fields->f_fbincr, 0, pc, length); |
| 193 | break; |
| 194 | case MT_OPERAND_FRDR : |
| 195 | print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_dr, 0|(1<<CGEN_OPERAND_ABS_ADDR)); |
| 196 | break; |
| 197 | case MT_OPERAND_FRDRRR : |
| 198 | print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_drrr, 0|(1<<CGEN_OPERAND_ABS_ADDR)); |
| 199 | break; |
| 200 | case MT_OPERAND_FRSR1 : |
| 201 | print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_sr1, 0|(1<<CGEN_OPERAND_ABS_ADDR)); |
| 202 | break; |
| 203 | case MT_OPERAND_FRSR2 : |
| 204 | print_keyword (cd, info, & mt_cgen_opval_h_spr, fields->f_sr2, 0|(1<<CGEN_OPERAND_ABS_ADDR)); |
| 205 | break; |
| 206 | case MT_OPERAND_ID : |
| 207 | print_dollarhex (cd, info, fields->f_id, 0, pc, length); |
| 208 | break; |
| 209 | case MT_OPERAND_IMM16 : |
| 210 | print_dollarhex (cd, info, fields->f_imm16s, 0|(1<<CGEN_OPERAND_SIGNED), pc, length); |
| 211 | break; |
| 212 | case MT_OPERAND_IMM16L : |
| 213 | print_dollarhex (cd, info, fields->f_imm16l, 0, pc, length); |
| 214 | break; |
| 215 | case MT_OPERAND_IMM16O : |
| 216 | print_pcrel (cd, info, fields->f_imm16s, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); |
| 217 | break; |
| 218 | case MT_OPERAND_IMM16Z : |
| 219 | print_dollarhex (cd, info, fields->f_imm16u, 0, pc, length); |
| 220 | break; |
| 221 | case MT_OPERAND_INCAMT : |
| 222 | print_dollarhex (cd, info, fields->f_incamt, 0, pc, length); |
| 223 | break; |
| 224 | case MT_OPERAND_INCR : |
| 225 | print_dollarhex (cd, info, fields->f_incr, 0, pc, length); |
| 226 | break; |
| 227 | case MT_OPERAND_LENGTH : |
| 228 | print_dollarhex (cd, info, fields->f_length, 0, pc, length); |
| 229 | break; |
| 230 | case MT_OPERAND_LOOPSIZE : |
| 231 | print_pcrel (cd, info, fields->f_loopo, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length); |
| 232 | break; |
| 233 | case MT_OPERAND_MASK : |
| 234 | print_dollarhex (cd, info, fields->f_mask, 0, pc, length); |
| 235 | break; |
| 236 | case MT_OPERAND_MASK1 : |
| 237 | print_dollarhex (cd, info, fields->f_mask1, 0, pc, length); |
| 238 | break; |
| 239 | case MT_OPERAND_MODE : |
| 240 | print_dollarhex (cd, info, fields->f_mode, 0, pc, length); |
| 241 | break; |
| 242 | case MT_OPERAND_PERM : |
| 243 | print_dollarhex (cd, info, fields->f_perm, 0, pc, length); |
| 244 | break; |
| 245 | case MT_OPERAND_RBBC : |
| 246 | print_dollarhex (cd, info, fields->f_rbbc, 0, pc, length); |
| 247 | break; |
| 248 | case MT_OPERAND_RC : |
| 249 | print_dollarhex (cd, info, fields->f_rc, 0, pc, length); |
| 250 | break; |
| 251 | case MT_OPERAND_RC1 : |
| 252 | print_dollarhex (cd, info, fields->f_rc1, 0, pc, length); |
| 253 | break; |
| 254 | case MT_OPERAND_RC2 : |
| 255 | print_dollarhex (cd, info, fields->f_rc2, 0, pc, length); |
| 256 | break; |
| 257 | case MT_OPERAND_RC3 : |
| 258 | print_dollarhex (cd, info, fields->f_rc3, 0, pc, length); |
| 259 | break; |
| 260 | case MT_OPERAND_RCNUM : |
| 261 | print_dollarhex (cd, info, fields->f_rcnum, 0, pc, length); |
| 262 | break; |
| 263 | case MT_OPERAND_RDA : |
| 264 | print_dollarhex (cd, info, fields->f_rda, 0, pc, length); |
| 265 | break; |
| 266 | case MT_OPERAND_ROWNUM : |
| 267 | print_dollarhex (cd, info, fields->f_rownum, 0, pc, length); |
| 268 | break; |
| 269 | case MT_OPERAND_ROWNUM1 : |
| 270 | print_dollarhex (cd, info, fields->f_rownum1, 0, pc, length); |
| 271 | break; |
| 272 | case MT_OPERAND_ROWNUM2 : |
| 273 | print_dollarhex (cd, info, fields->f_rownum2, 0, pc, length); |
| 274 | break; |
| 275 | case MT_OPERAND_SIZE : |
| 276 | print_dollarhex (cd, info, fields->f_size, 0, pc, length); |
| 277 | break; |
| 278 | case MT_OPERAND_TYPE : |
| 279 | print_dollarhex (cd, info, fields->f_type, 0, pc, length); |
| 280 | break; |
| 281 | case MT_OPERAND_WR : |
| 282 | print_dollarhex (cd, info, fields->f_wr, 0, pc, length); |
| 283 | break; |
| 284 | case MT_OPERAND_XMODE : |
| 285 | print_dollarhex (cd, info, fields->f_xmode, 0, pc, length); |
| 286 | break; |
| 287 | |
| 288 | default : |
| 289 | /* xgettext:c-format */ |
| 290 | fprintf (stderr, _("Unrecognized field %d while printing insn.\n"), |
| 291 | opindex); |
| 292 | abort (); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | cgen_print_fn * const mt_cgen_print_handlers[] = |
| 297 | { |
| 298 | print_insn_normal, |
| 299 | }; |
| 300 | |
| 301 | |
| 302 | void |
| 303 | mt_cgen_init_dis (CGEN_CPU_DESC cd) |
| 304 | { |
| 305 | mt_cgen_init_opcode_table (cd); |
| 306 | mt_cgen_init_ibld_table (cd); |
| 307 | cd->print_handlers = & mt_cgen_print_handlers[0]; |
| 308 | cd->print_operand = mt_cgen_print_operand; |
| 309 | } |
| 310 | |
| 311 | \f |
| 312 | /* Default print handler. */ |
| 313 | |
| 314 | static void |
| 315 | print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
| 316 | void *dis_info, |
| 317 | long value, |
| 318 | unsigned int attrs, |
| 319 | bfd_vma pc ATTRIBUTE_UNUSED, |
| 320 | int length ATTRIBUTE_UNUSED) |
| 321 | { |
| 322 | disassemble_info *info = (disassemble_info *) dis_info; |
| 323 | |
| 324 | #ifdef CGEN_PRINT_NORMAL |
| 325 | CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length); |
| 326 | #endif |
| 327 | |
| 328 | /* Print the operand as directed by the attributes. */ |
| 329 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) |
| 330 | ; /* nothing to do */ |
| 331 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) |
| 332 | (*info->fprintf_func) (info->stream, "%ld", value); |
| 333 | else |
| 334 | (*info->fprintf_func) (info->stream, "0x%lx", value); |
| 335 | } |
| 336 | |
| 337 | /* Default address handler. */ |
| 338 | |
| 339 | static void |
| 340 | print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
| 341 | void *dis_info, |
| 342 | bfd_vma value, |
| 343 | unsigned int attrs, |
| 344 | bfd_vma pc ATTRIBUTE_UNUSED, |
| 345 | int length ATTRIBUTE_UNUSED) |
| 346 | { |
| 347 | disassemble_info *info = (disassemble_info *) dis_info; |
| 348 | |
| 349 | #ifdef CGEN_PRINT_ADDRESS |
| 350 | CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length); |
| 351 | #endif |
| 352 | |
| 353 | /* Print the operand as directed by the attributes. */ |
| 354 | if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY)) |
| 355 | ; /* Nothing to do. */ |
| 356 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR)) |
| 357 | (*info->print_address_func) (value, info); |
| 358 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR)) |
| 359 | (*info->print_address_func) (value, info); |
| 360 | else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED)) |
| 361 | (*info->fprintf_func) (info->stream, "%ld", (long) value); |
| 362 | else |
| 363 | (*info->fprintf_func) (info->stream, "0x%lx", (long) value); |
| 364 | } |
| 365 | |
| 366 | /* Keyword print handler. */ |
| 367 | |
| 368 | static void |
| 369 | print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
| 370 | void *dis_info, |
| 371 | CGEN_KEYWORD *keyword_table, |
| 372 | long value, |
| 373 | unsigned int attrs ATTRIBUTE_UNUSED) |
| 374 | { |
| 375 | disassemble_info *info = (disassemble_info *) dis_info; |
| 376 | const CGEN_KEYWORD_ENTRY *ke; |
| 377 | |
| 378 | ke = cgen_keyword_lookup_value (keyword_table, value); |
| 379 | if (ke != NULL) |
| 380 | (*info->fprintf_func) (info->stream, "%s", ke->name); |
| 381 | else |
| 382 | (*info->fprintf_func) (info->stream, "???"); |
| 383 | } |
| 384 | \f |
| 385 | /* Default insn printer. |
| 386 | |
| 387 | DIS_INFO is defined as `void *' so the disassembler needn't know anything |
| 388 | about disassemble_info. */ |
| 389 | |
| 390 | static void |
| 391 | print_insn_normal (CGEN_CPU_DESC cd, |
| 392 | void *dis_info, |
| 393 | const CGEN_INSN *insn, |
| 394 | CGEN_FIELDS *fields, |
| 395 | bfd_vma pc, |
| 396 | int length) |
| 397 | { |
| 398 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); |
| 399 | disassemble_info *info = (disassemble_info *) dis_info; |
| 400 | const CGEN_SYNTAX_CHAR_TYPE *syn; |
| 401 | |
| 402 | CGEN_INIT_PRINT (cd); |
| 403 | |
| 404 | for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) |
| 405 | { |
| 406 | if (CGEN_SYNTAX_MNEMONIC_P (*syn)) |
| 407 | { |
| 408 | (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn)); |
| 409 | continue; |
| 410 | } |
| 411 | if (CGEN_SYNTAX_CHAR_P (*syn)) |
| 412 | { |
| 413 | (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn)); |
| 414 | continue; |
| 415 | } |
| 416 | |
| 417 | /* We have an operand. */ |
| 418 | mt_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info, |
| 419 | fields, CGEN_INSN_ATTRS (insn), pc, length); |
| 420 | } |
| 421 | } |
| 422 | \f |
| 423 | /* Subroutine of print_insn. Reads an insn into the given buffers and updates |
| 424 | the extract info. |
| 425 | Returns 0 if all is well, non-zero otherwise. */ |
| 426 | |
| 427 | static int |
| 428 | read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, |
| 429 | bfd_vma pc, |
| 430 | disassemble_info *info, |
| 431 | bfd_byte *buf, |
| 432 | int buflen, |
| 433 | CGEN_EXTRACT_INFO *ex_info, |
| 434 | unsigned long *insn_value) |
| 435 | { |
| 436 | int status = (*info->read_memory_func) (pc, buf, buflen, info); |
| 437 | |
| 438 | if (status != 0) |
| 439 | { |
| 440 | (*info->memory_error_func) (status, pc, info); |
| 441 | return -1; |
| 442 | } |
| 443 | |
| 444 | ex_info->dis_info = info; |
| 445 | ex_info->valid = (1 << buflen) - 1; |
| 446 | ex_info->insn_bytes = buf; |
| 447 | |
| 448 | *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG); |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | /* Utility to print an insn. |
| 453 | BUF is the base part of the insn, target byte order, BUFLEN bytes long. |
| 454 | The result is the size of the insn in bytes or zero for an unknown insn |
| 455 | or -1 if an error occurs fetching data (memory_error_func will have |
| 456 | been called). */ |
| 457 | |
| 458 | static int |
| 459 | print_insn (CGEN_CPU_DESC cd, |
| 460 | bfd_vma pc, |
| 461 | disassemble_info *info, |
| 462 | bfd_byte *buf, |
| 463 | unsigned int buflen) |
| 464 | { |
| 465 | CGEN_INSN_INT insn_value; |
| 466 | const CGEN_INSN_LIST *insn_list; |
| 467 | CGEN_EXTRACT_INFO ex_info; |
| 468 | int basesize; |
| 469 | |
| 470 | /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */ |
| 471 | basesize = cd->base_insn_bitsize < buflen * 8 ? |
| 472 | cd->base_insn_bitsize : buflen * 8; |
| 473 | insn_value = cgen_get_insn_value (cd, buf, basesize); |
| 474 | |
| 475 | |
| 476 | /* Fill in ex_info fields like read_insn would. Don't actually call |
| 477 | read_insn, since the incoming buffer is already read (and possibly |
| 478 | modified a la m32r). */ |
| 479 | ex_info.valid = (1 << buflen) - 1; |
| 480 | ex_info.dis_info = info; |
| 481 | ex_info.insn_bytes = buf; |
| 482 | |
| 483 | /* The instructions are stored in hash lists. |
| 484 | Pick the first one and keep trying until we find the right one. */ |
| 485 | |
| 486 | insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value); |
| 487 | while (insn_list != NULL) |
| 488 | { |
| 489 | const CGEN_INSN *insn = insn_list->insn; |
| 490 | CGEN_FIELDS fields; |
| 491 | int length; |
| 492 | unsigned long insn_value_cropped; |
| 493 | |
| 494 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED |
| 495 | /* Not needed as insn shouldn't be in hash lists if not supported. */ |
| 496 | /* Supported by this cpu? */ |
| 497 | if (! mt_cgen_insn_supported (cd, insn)) |
| 498 | { |
| 499 | insn_list = CGEN_DIS_NEXT_INSN (insn_list); |
| 500 | continue; |
| 501 | } |
| 502 | #endif |
| 503 | |
| 504 | /* Basic bit mask must be correct. */ |
| 505 | /* ??? May wish to allow target to defer this check until the extract |
| 506 | handler. */ |
| 507 | |
| 508 | /* Base size may exceed this instruction's size. Extract the |
| 509 | relevant part from the buffer. */ |
| 510 | if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen && |
| 511 | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) |
| 512 | insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn), |
| 513 | info->endian == BFD_ENDIAN_BIG); |
| 514 | else |
| 515 | insn_value_cropped = insn_value; |
| 516 | |
| 517 | if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn)) |
| 518 | == CGEN_INSN_BASE_VALUE (insn)) |
| 519 | { |
| 520 | /* Printing is handled in two passes. The first pass parses the |
| 521 | machine insn and extracts the fields. The second pass prints |
| 522 | them. */ |
| 523 | |
| 524 | /* Make sure the entire insn is loaded into insn_value, if it |
| 525 | can fit. */ |
| 526 | if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) && |
| 527 | (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long)) |
| 528 | { |
| 529 | unsigned long full_insn_value; |
| 530 | int rc = read_insn (cd, pc, info, buf, |
| 531 | CGEN_INSN_BITSIZE (insn) / 8, |
| 532 | & ex_info, & full_insn_value); |
| 533 | if (rc != 0) |
| 534 | return rc; |
| 535 | length = CGEN_EXTRACT_FN (cd, insn) |
| 536 | (cd, insn, &ex_info, full_insn_value, &fields, pc); |
| 537 | } |
| 538 | else |
| 539 | length = CGEN_EXTRACT_FN (cd, insn) |
| 540 | (cd, insn, &ex_info, insn_value_cropped, &fields, pc); |
| 541 | |
| 542 | /* Length < 0 -> error. */ |
| 543 | if (length < 0) |
| 544 | return length; |
| 545 | if (length > 0) |
| 546 | { |
| 547 | CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length); |
| 548 | /* Length is in bits, result is in bytes. */ |
| 549 | return length / 8; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | insn_list = CGEN_DIS_NEXT_INSN (insn_list); |
| 554 | } |
| 555 | |
| 556 | return 0; |
| 557 | } |
| 558 | |
| 559 | /* Default value for CGEN_PRINT_INSN. |
| 560 | The result is the size of the insn in bytes or zero for an unknown insn |
| 561 | or -1 if an error occured fetching bytes. */ |
| 562 | |
| 563 | #ifndef CGEN_PRINT_INSN |
| 564 | #define CGEN_PRINT_INSN default_print_insn |
| 565 | #endif |
| 566 | |
| 567 | static int |
| 568 | default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info) |
| 569 | { |
| 570 | bfd_byte buf[CGEN_MAX_INSN_SIZE]; |
| 571 | int buflen; |
| 572 | int status; |
| 573 | |
| 574 | /* Attempt to read the base part of the insn. */ |
| 575 | buflen = cd->base_insn_bitsize / 8; |
| 576 | status = (*info->read_memory_func) (pc, buf, buflen, info); |
| 577 | |
| 578 | /* Try again with the minimum part, if min < base. */ |
| 579 | if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) |
| 580 | { |
| 581 | buflen = cd->min_insn_bitsize / 8; |
| 582 | status = (*info->read_memory_func) (pc, buf, buflen, info); |
| 583 | } |
| 584 | |
| 585 | if (status != 0) |
| 586 | { |
| 587 | (*info->memory_error_func) (status, pc, info); |
| 588 | return -1; |
| 589 | } |
| 590 | |
| 591 | return print_insn (cd, pc, info, buf, buflen); |
| 592 | } |
| 593 | |
| 594 | /* Main entry point. |
| 595 | Print one instruction from PC on INFO->STREAM. |
| 596 | Return the size of the instruction (in bytes). */ |
| 597 | |
| 598 | typedef struct cpu_desc_list |
| 599 | { |
| 600 | struct cpu_desc_list *next; |
| 601 | CGEN_BITSET *isa; |
| 602 | int mach; |
| 603 | int endian; |
| 604 | CGEN_CPU_DESC cd; |
| 605 | } cpu_desc_list; |
| 606 | |
| 607 | int |
| 608 | print_insn_mt (bfd_vma pc, disassemble_info *info) |
| 609 | { |
| 610 | static cpu_desc_list *cd_list = 0; |
| 611 | cpu_desc_list *cl = 0; |
| 612 | static CGEN_CPU_DESC cd = 0; |
| 613 | static CGEN_BITSET *prev_isa; |
| 614 | static int prev_mach; |
| 615 | static int prev_endian; |
| 616 | int length; |
| 617 | CGEN_BITSET *isa; |
| 618 | int mach; |
| 619 | int endian = (info->endian == BFD_ENDIAN_BIG |
| 620 | ? CGEN_ENDIAN_BIG |
| 621 | : CGEN_ENDIAN_LITTLE); |
| 622 | enum bfd_architecture arch; |
| 623 | |
| 624 | /* ??? gdb will set mach but leave the architecture as "unknown" */ |
| 625 | #ifndef CGEN_BFD_ARCH |
| 626 | #define CGEN_BFD_ARCH bfd_arch_mt |
| 627 | #endif |
| 628 | arch = info->arch; |
| 629 | if (arch == bfd_arch_unknown) |
| 630 | arch = CGEN_BFD_ARCH; |
| 631 | |
| 632 | /* There's no standard way to compute the machine or isa number |
| 633 | so we leave it to the target. */ |
| 634 | #ifdef CGEN_COMPUTE_MACH |
| 635 | mach = CGEN_COMPUTE_MACH (info); |
| 636 | #else |
| 637 | mach = info->mach; |
| 638 | #endif |
| 639 | |
| 640 | #ifdef CGEN_COMPUTE_ISA |
| 641 | { |
| 642 | static CGEN_BITSET *permanent_isa; |
| 643 | |
| 644 | if (!permanent_isa) |
| 645 | permanent_isa = cgen_bitset_create (MAX_ISAS); |
| 646 | isa = permanent_isa; |
| 647 | cgen_bitset_clear (isa); |
| 648 | cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info)); |
| 649 | } |
| 650 | #else |
| 651 | isa = info->insn_sets; |
| 652 | #endif |
| 653 | |
| 654 | /* If we've switched cpu's, try to find a handle we've used before */ |
| 655 | if (cd |
| 656 | && (cgen_bitset_compare (isa, prev_isa) != 0 |
| 657 | || mach != prev_mach |
| 658 | || endian != prev_endian)) |
| 659 | { |
| 660 | cd = 0; |
| 661 | for (cl = cd_list; cl; cl = cl->next) |
| 662 | { |
| 663 | if (cgen_bitset_compare (cl->isa, isa) == 0 && |
| 664 | cl->mach == mach && |
| 665 | cl->endian == endian) |
| 666 | { |
| 667 | cd = cl->cd; |
| 668 | prev_isa = cd->isas; |
| 669 | break; |
| 670 | } |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | /* If we haven't initialized yet, initialize the opcode table. */ |
| 675 | if (! cd) |
| 676 | { |
| 677 | const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach); |
| 678 | const char *mach_name; |
| 679 | |
| 680 | if (!arch_type) |
| 681 | abort (); |
| 682 | mach_name = arch_type->printable_name; |
| 683 | |
| 684 | prev_isa = cgen_bitset_copy (isa); |
| 685 | prev_mach = mach; |
| 686 | prev_endian = endian; |
| 687 | cd = mt_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa, |
| 688 | CGEN_CPU_OPEN_BFDMACH, mach_name, |
| 689 | CGEN_CPU_OPEN_ENDIAN, prev_endian, |
| 690 | CGEN_CPU_OPEN_END); |
| 691 | if (!cd) |
| 692 | abort (); |
| 693 | |
| 694 | /* Save this away for future reference. */ |
| 695 | cl = xmalloc (sizeof (struct cpu_desc_list)); |
| 696 | cl->cd = cd; |
| 697 | cl->isa = prev_isa; |
| 698 | cl->mach = mach; |
| 699 | cl->endian = endian; |
| 700 | cl->next = cd_list; |
| 701 | cd_list = cl; |
| 702 | |
| 703 | mt_cgen_init_dis (cd); |
| 704 | } |
| 705 | |
| 706 | /* We try to have as much common code as possible. |
| 707 | But at this point some targets need to take over. */ |
| 708 | /* ??? Some targets may need a hook elsewhere. Try to avoid this, |
| 709 | but if not possible try to move this hook elsewhere rather than |
| 710 | have two hooks. */ |
| 711 | length = CGEN_PRINT_INSN (cd, pc, info); |
| 712 | if (length > 0) |
| 713 | return length; |
| 714 | if (length < 0) |
| 715 | return -1; |
| 716 | |
| 717 | (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG); |
| 718 | return cd->default_insn_bitsize / 8; |
| 719 | } |