| 1 | /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */ |
| 2 | /* Assembler interface for targets using CGEN. -*- C -*- |
| 3 | CGEN: Cpu tools GENerator |
| 4 | |
| 5 | THIS FILE IS MACHINE GENERATED WITH CGEN. |
| 6 | - the resultant file is machine generated, cgen-asm.in isn't |
| 7 | |
| 8 | Copyright (C) 1996-2018 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 | |
| 27 | /* ??? Eventually more and more of this stuff can go to cpu-independent files. |
| 28 | Keep that in mind. */ |
| 29 | |
| 30 | #include "sysdep.h" |
| 31 | #include <stdio.h> |
| 32 | #include "ansidecl.h" |
| 33 | #include "bfd.h" |
| 34 | #include "symcat.h" |
| 35 | #include "mt-desc.h" |
| 36 | #include "mt-opc.h" |
| 37 | #include "opintl.h" |
| 38 | #include "xregex.h" |
| 39 | #include "libiberty.h" |
| 40 | #include "safe-ctype.h" |
| 41 | |
| 42 | #undef min |
| 43 | #define min(a,b) ((a) < (b) ? (a) : (b)) |
| 44 | #undef max |
| 45 | #define max(a,b) ((a) > (b) ? (a) : (b)) |
| 46 | |
| 47 | static const char * parse_insn_normal |
| 48 | (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); |
| 49 | \f |
| 50 | /* -- assembler routines inserted here. */ |
| 51 | |
| 52 | /* -- asm.c */ |
| 53 | /* Range checking for signed numbers. Returns 0 if acceptable |
| 54 | and 1 if the value is out of bounds for a signed quantity. */ |
| 55 | |
| 56 | static int |
| 57 | signed_out_of_bounds (long val) |
| 58 | { |
| 59 | if ((val < -32768) || (val > 32767)) |
| 60 | return 1; |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | static const char * |
| 65 | parse_loopsize (CGEN_CPU_DESC cd, |
| 66 | const char **strp, |
| 67 | int opindex, |
| 68 | void *arg) |
| 69 | { |
| 70 | signed long * valuep = (signed long *) arg; |
| 71 | const char *errmsg; |
| 72 | bfd_reloc_code_real_type code = BFD_RELOC_NONE; |
| 73 | enum cgen_parse_operand_result result_type; |
| 74 | bfd_vma value; |
| 75 | |
| 76 | /* Is it a control transfer instructions? */ |
| 77 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE) |
| 78 | { |
| 79 | code = BFD_RELOC_MT_PCINSN8; |
| 80 | errmsg = cgen_parse_address (cd, strp, opindex, code, |
| 81 | & result_type, & value); |
| 82 | *valuep = value; |
| 83 | return errmsg; |
| 84 | } |
| 85 | |
| 86 | abort (); |
| 87 | } |
| 88 | |
| 89 | static const char * |
| 90 | parse_imm16 (CGEN_CPU_DESC cd, |
| 91 | const char **strp, |
| 92 | int opindex, |
| 93 | void *arg) |
| 94 | { |
| 95 | signed long * valuep = (signed long *) arg; |
| 96 | const char *errmsg; |
| 97 | enum cgen_parse_operand_result result_type; |
| 98 | bfd_reloc_code_real_type code = BFD_RELOC_NONE; |
| 99 | bfd_vma value; |
| 100 | |
| 101 | /* Is it a control transfer instructions? */ |
| 102 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O) |
| 103 | { |
| 104 | code = BFD_RELOC_16_PCREL; |
| 105 | errmsg = cgen_parse_address (cd, strp, opindex, code, |
| 106 | & result_type, & value); |
| 107 | if (errmsg == NULL) |
| 108 | { |
| 109 | if (signed_out_of_bounds (value)) |
| 110 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); |
| 111 | } |
| 112 | *valuep = value; |
| 113 | return errmsg; |
| 114 | } |
| 115 | |
| 116 | /* If it's not a control transfer instruction, then |
| 117 | we have to check for %OP relocating operators. */ |
| 118 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L) |
| 119 | ; |
| 120 | else if (strncmp (*strp, "%hi16", 5) == 0) |
| 121 | { |
| 122 | *strp += 5; |
| 123 | code = BFD_RELOC_HI16; |
| 124 | } |
| 125 | else if (strncmp (*strp, "%lo16", 5) == 0) |
| 126 | { |
| 127 | *strp += 5; |
| 128 | code = BFD_RELOC_LO16; |
| 129 | } |
| 130 | |
| 131 | /* If we found a %OP relocating operator, then parse it as an address. |
| 132 | If not, we need to parse it as an integer, either signed or unsigned |
| 133 | depending on which operand type we have. */ |
| 134 | if (code != BFD_RELOC_NONE) |
| 135 | { |
| 136 | /* %OP relocating operator found. */ |
| 137 | errmsg = cgen_parse_address (cd, strp, opindex, code, |
| 138 | & result_type, & value); |
| 139 | if (errmsg == NULL) |
| 140 | { |
| 141 | switch (result_type) |
| 142 | { |
| 143 | case (CGEN_PARSE_OPERAND_RESULT_NUMBER): |
| 144 | if (code == BFD_RELOC_HI16) |
| 145 | value = (value >> 16) & 0xFFFF; |
| 146 | else if (code == BFD_RELOC_LO16) |
| 147 | value = value & 0xFFFF; |
| 148 | else |
| 149 | errmsg = _("Biiiig Trouble in parse_imm16!"); |
| 150 | break; |
| 151 | |
| 152 | case (CGEN_PARSE_OPERAND_RESULT_QUEUED): |
| 153 | /* No special processing for this case. */ |
| 154 | break; |
| 155 | |
| 156 | default: |
| 157 | errmsg = _("The percent-operator's operand is not a symbol"); |
| 158 | break; |
| 159 | } |
| 160 | } |
| 161 | *valuep = value; |
| 162 | } |
| 163 | else |
| 164 | { |
| 165 | /* Parse hex values like 0xffff as unsigned, and sign extend |
| 166 | them manually. */ |
| 167 | int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16); |
| 168 | |
| 169 | if ((*strp)[0] == '0' |
| 170 | && ((*strp)[1] == 'x' || (*strp)[1] == 'X')) |
| 171 | parse_signed = 0; |
| 172 | |
| 173 | /* No relocating operator. Parse as an number. */ |
| 174 | if (parse_signed) |
| 175 | { |
| 176 | /* Parse as as signed integer. */ |
| 177 | |
| 178 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep); |
| 179 | |
| 180 | if (errmsg == NULL) |
| 181 | { |
| 182 | #if 0 |
| 183 | /* Manual range checking is needed for the signed case. */ |
| 184 | if (*valuep & 0x8000) |
| 185 | value = 0xffff0000 | *valuep; |
| 186 | else |
| 187 | value = *valuep; |
| 188 | |
| 189 | if (signed_out_of_bounds (value)) |
| 190 | errmsg = _("Operand out of range. Must be between -32768 and 32767."); |
| 191 | /* Truncate to 16 bits. This is necessary |
| 192 | because cgen will have sign extended *valuep. */ |
| 193 | *valuep &= 0xFFFF; |
| 194 | #endif |
| 195 | } |
| 196 | } |
| 197 | else |
| 198 | { |
| 199 | /* MT_OPERAND_IMM16Z. Parse as an unsigned integer. */ |
| 200 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep); |
| 201 | |
| 202 | if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16 |
| 203 | && *valuep >= 0x8000 |
| 204 | && *valuep <= 0xffff) |
| 205 | *valuep -= 0x10000; |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | return errmsg; |
| 210 | } |
| 211 | |
| 212 | |
| 213 | static const char * |
| 214 | parse_dup (CGEN_CPU_DESC cd, |
| 215 | const char **strp, |
| 216 | int opindex, |
| 217 | unsigned long *valuep) |
| 218 | { |
| 219 | const char *errmsg = NULL; |
| 220 | |
| 221 | if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0) |
| 222 | { |
| 223 | *strp += 3; |
| 224 | *valuep = 1; |
| 225 | } |
| 226 | else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0) |
| 227 | { |
| 228 | *strp += 2; |
| 229 | *valuep = 0; |
| 230 | } |
| 231 | else |
| 232 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| 233 | |
| 234 | return errmsg; |
| 235 | } |
| 236 | |
| 237 | |
| 238 | static const char * |
| 239 | parse_ball (CGEN_CPU_DESC cd, |
| 240 | const char **strp, |
| 241 | int opindex, |
| 242 | unsigned long *valuep) |
| 243 | { |
| 244 | const char *errmsg = NULL; |
| 245 | |
| 246 | if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0) |
| 247 | { |
| 248 | *strp += 3; |
| 249 | *valuep = 1; |
| 250 | } |
| 251 | else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0) |
| 252 | { |
| 253 | *strp += 3; |
| 254 | *valuep = 0; |
| 255 | } |
| 256 | else |
| 257 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| 258 | |
| 259 | return errmsg; |
| 260 | } |
| 261 | |
| 262 | static const char * |
| 263 | parse_xmode (CGEN_CPU_DESC cd, |
| 264 | const char **strp, |
| 265 | int opindex, |
| 266 | unsigned long *valuep) |
| 267 | { |
| 268 | const char *errmsg = NULL; |
| 269 | |
| 270 | if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0) |
| 271 | { |
| 272 | *strp += 2; |
| 273 | *valuep = 1; |
| 274 | } |
| 275 | else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0) |
| 276 | { |
| 277 | *strp += 2; |
| 278 | *valuep = 0; |
| 279 | } |
| 280 | else |
| 281 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| 282 | |
| 283 | return errmsg; |
| 284 | } |
| 285 | |
| 286 | static const char * |
| 287 | parse_rc (CGEN_CPU_DESC cd, |
| 288 | const char **strp, |
| 289 | int opindex, |
| 290 | unsigned long *valuep) |
| 291 | { |
| 292 | const char *errmsg = NULL; |
| 293 | |
| 294 | if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0) |
| 295 | { |
| 296 | *strp += 1; |
| 297 | *valuep = 1; |
| 298 | } |
| 299 | else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0) |
| 300 | { |
| 301 | *strp += 1; |
| 302 | *valuep = 0; |
| 303 | } |
| 304 | else |
| 305 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| 306 | |
| 307 | return errmsg; |
| 308 | } |
| 309 | |
| 310 | static const char * |
| 311 | parse_cbrb (CGEN_CPU_DESC cd, |
| 312 | const char **strp, |
| 313 | int opindex, |
| 314 | unsigned long *valuep) |
| 315 | { |
| 316 | const char *errmsg = NULL; |
| 317 | |
| 318 | if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0) |
| 319 | { |
| 320 | *strp += 2; |
| 321 | *valuep = 1; |
| 322 | } |
| 323 | else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0) |
| 324 | { |
| 325 | *strp += 2; |
| 326 | *valuep = 0; |
| 327 | } |
| 328 | else |
| 329 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| 330 | |
| 331 | return errmsg; |
| 332 | } |
| 333 | |
| 334 | static const char * |
| 335 | parse_rbbc (CGEN_CPU_DESC cd, |
| 336 | const char **strp, |
| 337 | int opindex, |
| 338 | unsigned long *valuep) |
| 339 | { |
| 340 | const char *errmsg = NULL; |
| 341 | |
| 342 | if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0) |
| 343 | { |
| 344 | *strp += 2; |
| 345 | *valuep = 0; |
| 346 | } |
| 347 | else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0) |
| 348 | { |
| 349 | *strp += 3; |
| 350 | *valuep = 1; |
| 351 | } |
| 352 | else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0) |
| 353 | { |
| 354 | *strp += 3; |
| 355 | *valuep = 2; |
| 356 | } |
| 357 | else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0) |
| 358 | { |
| 359 | *strp += 2; |
| 360 | *valuep = 3; |
| 361 | } |
| 362 | else |
| 363 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| 364 | |
| 365 | return errmsg; |
| 366 | } |
| 367 | |
| 368 | static const char * |
| 369 | parse_type (CGEN_CPU_DESC cd, |
| 370 | const char **strp, |
| 371 | int opindex, |
| 372 | unsigned long *valuep) |
| 373 | { |
| 374 | const char *errmsg = NULL; |
| 375 | |
| 376 | if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0) |
| 377 | { |
| 378 | *strp += 3; |
| 379 | *valuep = 0; |
| 380 | } |
| 381 | else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0) |
| 382 | { |
| 383 | *strp += 4; |
| 384 | *valuep = 1; |
| 385 | } |
| 386 | else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0) |
| 387 | { |
| 388 | *strp += 2; |
| 389 | *valuep = 2; |
| 390 | } |
| 391 | else |
| 392 | errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); |
| 393 | |
| 394 | if ((errmsg == NULL) && (*valuep == 3)) |
| 395 | errmsg = _("invalid operand. type may have values 0,1,2 only."); |
| 396 | |
| 397 | return errmsg; |
| 398 | } |
| 399 | |
| 400 | /* -- dis.c */ |
| 401 | |
| 402 | const char * mt_cgen_parse_operand |
| 403 | (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); |
| 404 | |
| 405 | /* Main entry point for operand parsing. |
| 406 | |
| 407 | This function is basically just a big switch statement. Earlier versions |
| 408 | used tables to look up the function to use, but |
| 409 | - if the table contains both assembler and disassembler functions then |
| 410 | the disassembler contains much of the assembler and vice-versa, |
| 411 | - there's a lot of inlining possibilities as things grow, |
| 412 | - using a switch statement avoids the function call overhead. |
| 413 | |
| 414 | This function could be moved into `parse_insn_normal', but keeping it |
| 415 | separate makes clear the interface between `parse_insn_normal' and each of |
| 416 | the handlers. */ |
| 417 | |
| 418 | const char * |
| 419 | mt_cgen_parse_operand (CGEN_CPU_DESC cd, |
| 420 | int opindex, |
| 421 | const char ** strp, |
| 422 | CGEN_FIELDS * fields) |
| 423 | { |
| 424 | const char * errmsg = NULL; |
| 425 | /* Used by scalar operands that still need to be parsed. */ |
| 426 | long junk ATTRIBUTE_UNUSED; |
| 427 | |
| 428 | switch (opindex) |
| 429 | { |
| 430 | case MT_OPERAND_A23 : |
| 431 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_A23, (unsigned long *) (& fields->f_a23)); |
| 432 | break; |
| 433 | case MT_OPERAND_BALL : |
| 434 | errmsg = parse_ball (cd, strp, MT_OPERAND_BALL, (unsigned long *) (& fields->f_ball)); |
| 435 | break; |
| 436 | case MT_OPERAND_BALL2 : |
| 437 | errmsg = parse_ball (cd, strp, MT_OPERAND_BALL2, (unsigned long *) (& fields->f_ball2)); |
| 438 | break; |
| 439 | case MT_OPERAND_BANKADDR : |
| 440 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BANKADDR, (unsigned long *) (& fields->f_bankaddr)); |
| 441 | break; |
| 442 | case MT_OPERAND_BRC : |
| 443 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC, (unsigned long *) (& fields->f_brc)); |
| 444 | break; |
| 445 | case MT_OPERAND_BRC2 : |
| 446 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC2, (unsigned long *) (& fields->f_brc2)); |
| 447 | break; |
| 448 | case MT_OPERAND_CB1INCR : |
| 449 | errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB1INCR, (long *) (& fields->f_cb1incr)); |
| 450 | break; |
| 451 | case MT_OPERAND_CB1SEL : |
| 452 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB1SEL, (unsigned long *) (& fields->f_cb1sel)); |
| 453 | break; |
| 454 | case MT_OPERAND_CB2INCR : |
| 455 | errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB2INCR, (long *) (& fields->f_cb2incr)); |
| 456 | break; |
| 457 | case MT_OPERAND_CB2SEL : |
| 458 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB2SEL, (unsigned long *) (& fields->f_cb2sel)); |
| 459 | break; |
| 460 | case MT_OPERAND_CBRB : |
| 461 | errmsg = parse_cbrb (cd, strp, MT_OPERAND_CBRB, (unsigned long *) (& fields->f_cbrb)); |
| 462 | break; |
| 463 | case MT_OPERAND_CBS : |
| 464 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBS, (unsigned long *) (& fields->f_cbs)); |
| 465 | break; |
| 466 | case MT_OPERAND_CBX : |
| 467 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBX, (unsigned long *) (& fields->f_cbx)); |
| 468 | break; |
| 469 | case MT_OPERAND_CCB : |
| 470 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CCB, (unsigned long *) (& fields->f_ccb)); |
| 471 | break; |
| 472 | case MT_OPERAND_CDB : |
| 473 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CDB, (unsigned long *) (& fields->f_cdb)); |
| 474 | break; |
| 475 | case MT_OPERAND_CELL : |
| 476 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CELL, (unsigned long *) (& fields->f_cell)); |
| 477 | break; |
| 478 | case MT_OPERAND_COLNUM : |
| 479 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_COLNUM, (unsigned long *) (& fields->f_colnum)); |
| 480 | break; |
| 481 | case MT_OPERAND_CONTNUM : |
| 482 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CONTNUM, (unsigned long *) (& fields->f_contnum)); |
| 483 | break; |
| 484 | case MT_OPERAND_CR : |
| 485 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CR, (unsigned long *) (& fields->f_cr)); |
| 486 | break; |
| 487 | case MT_OPERAND_CTXDISP : |
| 488 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CTXDISP, (unsigned long *) (& fields->f_ctxdisp)); |
| 489 | break; |
| 490 | case MT_OPERAND_DUP : |
| 491 | errmsg = parse_dup (cd, strp, MT_OPERAND_DUP, (unsigned long *) (& fields->f_dup)); |
| 492 | break; |
| 493 | case MT_OPERAND_FBDISP : |
| 494 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBDISP, (unsigned long *) (& fields->f_fbdisp)); |
| 495 | break; |
| 496 | case MT_OPERAND_FBINCR : |
| 497 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBINCR, (unsigned long *) (& fields->f_fbincr)); |
| 498 | break; |
| 499 | case MT_OPERAND_FRDR : |
| 500 | errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_dr); |
| 501 | break; |
| 502 | case MT_OPERAND_FRDRRR : |
| 503 | errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_drrr); |
| 504 | break; |
| 505 | case MT_OPERAND_FRSR1 : |
| 506 | errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr1); |
| 507 | break; |
| 508 | case MT_OPERAND_FRSR2 : |
| 509 | errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr2); |
| 510 | break; |
| 511 | case MT_OPERAND_ID : |
| 512 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ID, (unsigned long *) (& fields->f_id)); |
| 513 | break; |
| 514 | case MT_OPERAND_IMM16 : |
| 515 | errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16, (long *) (& fields->f_imm16s)); |
| 516 | break; |
| 517 | case MT_OPERAND_IMM16L : |
| 518 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_IMM16L, (unsigned long *) (& fields->f_imm16l)); |
| 519 | break; |
| 520 | case MT_OPERAND_IMM16O : |
| 521 | errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16O, (unsigned long *) (& fields->f_imm16s)); |
| 522 | break; |
| 523 | case MT_OPERAND_IMM16Z : |
| 524 | errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16Z, (unsigned long *) (& fields->f_imm16u)); |
| 525 | break; |
| 526 | case MT_OPERAND_INCAMT : |
| 527 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCAMT, (unsigned long *) (& fields->f_incamt)); |
| 528 | break; |
| 529 | case MT_OPERAND_INCR : |
| 530 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCR, (unsigned long *) (& fields->f_incr)); |
| 531 | break; |
| 532 | case MT_OPERAND_LENGTH : |
| 533 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_LENGTH, (unsigned long *) (& fields->f_length)); |
| 534 | break; |
| 535 | case MT_OPERAND_LOOPSIZE : |
| 536 | errmsg = parse_loopsize (cd, strp, MT_OPERAND_LOOPSIZE, (unsigned long *) (& fields->f_loopo)); |
| 537 | break; |
| 538 | case MT_OPERAND_MASK : |
| 539 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK, (unsigned long *) (& fields->f_mask)); |
| 540 | break; |
| 541 | case MT_OPERAND_MASK1 : |
| 542 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK1, (unsigned long *) (& fields->f_mask1)); |
| 543 | break; |
| 544 | case MT_OPERAND_MODE : |
| 545 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MODE, (unsigned long *) (& fields->f_mode)); |
| 546 | break; |
| 547 | case MT_OPERAND_PERM : |
| 548 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_PERM, (unsigned long *) (& fields->f_perm)); |
| 549 | break; |
| 550 | case MT_OPERAND_RBBC : |
| 551 | errmsg = parse_rbbc (cd, strp, MT_OPERAND_RBBC, (unsigned long *) (& fields->f_rbbc)); |
| 552 | break; |
| 553 | case MT_OPERAND_RC : |
| 554 | errmsg = parse_rc (cd, strp, MT_OPERAND_RC, (unsigned long *) (& fields->f_rc)); |
| 555 | break; |
| 556 | case MT_OPERAND_RC1 : |
| 557 | errmsg = parse_rc (cd, strp, MT_OPERAND_RC1, (unsigned long *) (& fields->f_rc1)); |
| 558 | break; |
| 559 | case MT_OPERAND_RC2 : |
| 560 | errmsg = parse_rc (cd, strp, MT_OPERAND_RC2, (unsigned long *) (& fields->f_rc2)); |
| 561 | break; |
| 562 | case MT_OPERAND_RC3 : |
| 563 | errmsg = parse_rc (cd, strp, MT_OPERAND_RC3, (unsigned long *) (& fields->f_rc3)); |
| 564 | break; |
| 565 | case MT_OPERAND_RCNUM : |
| 566 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RCNUM, (unsigned long *) (& fields->f_rcnum)); |
| 567 | break; |
| 568 | case MT_OPERAND_RDA : |
| 569 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RDA, (unsigned long *) (& fields->f_rda)); |
| 570 | break; |
| 571 | case MT_OPERAND_ROWNUM : |
| 572 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM, (unsigned long *) (& fields->f_rownum)); |
| 573 | break; |
| 574 | case MT_OPERAND_ROWNUM1 : |
| 575 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM1, (unsigned long *) (& fields->f_rownum1)); |
| 576 | break; |
| 577 | case MT_OPERAND_ROWNUM2 : |
| 578 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM2, (unsigned long *) (& fields->f_rownum2)); |
| 579 | break; |
| 580 | case MT_OPERAND_SIZE : |
| 581 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_SIZE, (unsigned long *) (& fields->f_size)); |
| 582 | break; |
| 583 | case MT_OPERAND_TYPE : |
| 584 | errmsg = parse_type (cd, strp, MT_OPERAND_TYPE, (unsigned long *) (& fields->f_type)); |
| 585 | break; |
| 586 | case MT_OPERAND_WR : |
| 587 | errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_WR, (unsigned long *) (& fields->f_wr)); |
| 588 | break; |
| 589 | case MT_OPERAND_XMODE : |
| 590 | errmsg = parse_xmode (cd, strp, MT_OPERAND_XMODE, (unsigned long *) (& fields->f_xmode)); |
| 591 | break; |
| 592 | |
| 593 | default : |
| 594 | /* xgettext:c-format */ |
| 595 | opcodes_error_handler |
| 596 | (_("internal error: unrecognized field %d while parsing"), |
| 597 | opindex); |
| 598 | abort (); |
| 599 | } |
| 600 | |
| 601 | return errmsg; |
| 602 | } |
| 603 | |
| 604 | cgen_parse_fn * const mt_cgen_parse_handlers[] = |
| 605 | { |
| 606 | parse_insn_normal, |
| 607 | }; |
| 608 | |
| 609 | void |
| 610 | mt_cgen_init_asm (CGEN_CPU_DESC cd) |
| 611 | { |
| 612 | mt_cgen_init_opcode_table (cd); |
| 613 | mt_cgen_init_ibld_table (cd); |
| 614 | cd->parse_handlers = & mt_cgen_parse_handlers[0]; |
| 615 | cd->parse_operand = mt_cgen_parse_operand; |
| 616 | #ifdef CGEN_ASM_INIT_HOOK |
| 617 | CGEN_ASM_INIT_HOOK |
| 618 | #endif |
| 619 | } |
| 620 | |
| 621 | \f |
| 622 | |
| 623 | /* Regex construction routine. |
| 624 | |
| 625 | This translates an opcode syntax string into a regex string, |
| 626 | by replacing any non-character syntax element (such as an |
| 627 | opcode) with the pattern '.*' |
| 628 | |
| 629 | It then compiles the regex and stores it in the opcode, for |
| 630 | later use by mt_cgen_assemble_insn |
| 631 | |
| 632 | Returns NULL for success, an error message for failure. */ |
| 633 | |
| 634 | char * |
| 635 | mt_cgen_build_insn_regex (CGEN_INSN *insn) |
| 636 | { |
| 637 | CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); |
| 638 | const char *mnem = CGEN_INSN_MNEMONIC (insn); |
| 639 | char rxbuf[CGEN_MAX_RX_ELEMENTS]; |
| 640 | char *rx = rxbuf; |
| 641 | const CGEN_SYNTAX_CHAR_TYPE *syn; |
| 642 | int reg_err; |
| 643 | |
| 644 | syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); |
| 645 | |
| 646 | /* Mnemonics come first in the syntax string. */ |
| 647 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) |
| 648 | return _("missing mnemonic in syntax string"); |
| 649 | ++syn; |
| 650 | |
| 651 | /* Generate a case sensitive regular expression that emulates case |
| 652 | insensitive matching in the "C" locale. We cannot generate a case |
| 653 | insensitive regular expression because in Turkish locales, 'i' and 'I' |
| 654 | are not equal modulo case conversion. */ |
| 655 | |
| 656 | /* Copy the literal mnemonic out of the insn. */ |
| 657 | for (; *mnem; mnem++) |
| 658 | { |
| 659 | char c = *mnem; |
| 660 | |
| 661 | if (ISALPHA (c)) |
| 662 | { |
| 663 | *rx++ = '['; |
| 664 | *rx++ = TOLOWER (c); |
| 665 | *rx++ = TOUPPER (c); |
| 666 | *rx++ = ']'; |
| 667 | } |
| 668 | else |
| 669 | *rx++ = c; |
| 670 | } |
| 671 | |
| 672 | /* Copy any remaining literals from the syntax string into the rx. */ |
| 673 | for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) |
| 674 | { |
| 675 | if (CGEN_SYNTAX_CHAR_P (* syn)) |
| 676 | { |
| 677 | char c = CGEN_SYNTAX_CHAR (* syn); |
| 678 | |
| 679 | switch (c) |
| 680 | { |
| 681 | /* Escape any regex metacharacters in the syntax. */ |
| 682 | case '.': case '[': case '\\': |
| 683 | case '*': case '^': case '$': |
| 684 | |
| 685 | #ifdef CGEN_ESCAPE_EXTENDED_REGEX |
| 686 | case '?': case '{': case '}': |
| 687 | case '(': case ')': case '*': |
| 688 | case '|': case '+': case ']': |
| 689 | #endif |
| 690 | *rx++ = '\\'; |
| 691 | *rx++ = c; |
| 692 | break; |
| 693 | |
| 694 | default: |
| 695 | if (ISALPHA (c)) |
| 696 | { |
| 697 | *rx++ = '['; |
| 698 | *rx++ = TOLOWER (c); |
| 699 | *rx++ = TOUPPER (c); |
| 700 | *rx++ = ']'; |
| 701 | } |
| 702 | else |
| 703 | *rx++ = c; |
| 704 | break; |
| 705 | } |
| 706 | } |
| 707 | else |
| 708 | { |
| 709 | /* Replace non-syntax fields with globs. */ |
| 710 | *rx++ = '.'; |
| 711 | *rx++ = '*'; |
| 712 | } |
| 713 | } |
| 714 | |
| 715 | /* Trailing whitespace ok. */ |
| 716 | * rx++ = '['; |
| 717 | * rx++ = ' '; |
| 718 | * rx++ = '\t'; |
| 719 | * rx++ = ']'; |
| 720 | * rx++ = '*'; |
| 721 | |
| 722 | /* But anchor it after that. */ |
| 723 | * rx++ = '$'; |
| 724 | * rx = '\0'; |
| 725 | |
| 726 | CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); |
| 727 | reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); |
| 728 | |
| 729 | if (reg_err == 0) |
| 730 | return NULL; |
| 731 | else |
| 732 | { |
| 733 | static char msg[80]; |
| 734 | |
| 735 | regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); |
| 736 | regfree ((regex_t *) CGEN_INSN_RX (insn)); |
| 737 | free (CGEN_INSN_RX (insn)); |
| 738 | (CGEN_INSN_RX (insn)) = NULL; |
| 739 | return msg; |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | \f |
| 744 | /* Default insn parser. |
| 745 | |
| 746 | The syntax string is scanned and operands are parsed and stored in FIELDS. |
| 747 | Relocs are queued as we go via other callbacks. |
| 748 | |
| 749 | ??? Note that this is currently an all-or-nothing parser. If we fail to |
| 750 | parse the instruction, we return 0 and the caller will start over from |
| 751 | the beginning. Backtracking will be necessary in parsing subexpressions, |
| 752 | but that can be handled there. Not handling backtracking here may get |
| 753 | expensive in the case of the m68k. Deal with later. |
| 754 | |
| 755 | Returns NULL for success, an error message for failure. */ |
| 756 | |
| 757 | static const char * |
| 758 | parse_insn_normal (CGEN_CPU_DESC cd, |
| 759 | const CGEN_INSN *insn, |
| 760 | const char **strp, |
| 761 | CGEN_FIELDS *fields) |
| 762 | { |
| 763 | /* ??? Runtime added insns not handled yet. */ |
| 764 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); |
| 765 | const char *str = *strp; |
| 766 | const char *errmsg; |
| 767 | const char *p; |
| 768 | const CGEN_SYNTAX_CHAR_TYPE * syn; |
| 769 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 770 | /* FIXME: wip */ |
| 771 | int past_opcode_p; |
| 772 | #endif |
| 773 | |
| 774 | /* For now we assume the mnemonic is first (there are no leading operands). |
| 775 | We can parse it without needing to set up operand parsing. |
| 776 | GAS's input scrubber will ensure mnemonics are lowercase, but we may |
| 777 | not be called from GAS. */ |
| 778 | p = CGEN_INSN_MNEMONIC (insn); |
| 779 | while (*p && TOLOWER (*p) == TOLOWER (*str)) |
| 780 | ++p, ++str; |
| 781 | |
| 782 | if (* p) |
| 783 | return _("unrecognized instruction"); |
| 784 | |
| 785 | #ifndef CGEN_MNEMONIC_OPERANDS |
| 786 | if (* str && ! ISSPACE (* str)) |
| 787 | return _("unrecognized instruction"); |
| 788 | #endif |
| 789 | |
| 790 | CGEN_INIT_PARSE (cd); |
| 791 | cgen_init_parse_operand (cd); |
| 792 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 793 | past_opcode_p = 0; |
| 794 | #endif |
| 795 | |
| 796 | /* We don't check for (*str != '\0') here because we want to parse |
| 797 | any trailing fake arguments in the syntax string. */ |
| 798 | syn = CGEN_SYNTAX_STRING (syntax); |
| 799 | |
| 800 | /* Mnemonics come first for now, ensure valid string. */ |
| 801 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) |
| 802 | abort (); |
| 803 | |
| 804 | ++syn; |
| 805 | |
| 806 | while (* syn != 0) |
| 807 | { |
| 808 | /* Non operand chars must match exactly. */ |
| 809 | if (CGEN_SYNTAX_CHAR_P (* syn)) |
| 810 | { |
| 811 | /* FIXME: While we allow for non-GAS callers above, we assume the |
| 812 | first char after the mnemonic part is a space. */ |
| 813 | /* FIXME: We also take inappropriate advantage of the fact that |
| 814 | GAS's input scrubber will remove extraneous blanks. */ |
| 815 | if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) |
| 816 | { |
| 817 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 818 | if (CGEN_SYNTAX_CHAR(* syn) == ' ') |
| 819 | past_opcode_p = 1; |
| 820 | #endif |
| 821 | ++ syn; |
| 822 | ++ str; |
| 823 | } |
| 824 | else if (*str) |
| 825 | { |
| 826 | /* Syntax char didn't match. Can't be this insn. */ |
| 827 | static char msg [80]; |
| 828 | |
| 829 | /* xgettext:c-format */ |
| 830 | sprintf (msg, _("syntax error (expected char `%c', found `%c')"), |
| 831 | CGEN_SYNTAX_CHAR(*syn), *str); |
| 832 | return msg; |
| 833 | } |
| 834 | else |
| 835 | { |
| 836 | /* Ran out of input. */ |
| 837 | static char msg [80]; |
| 838 | |
| 839 | /* xgettext:c-format */ |
| 840 | sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), |
| 841 | CGEN_SYNTAX_CHAR(*syn)); |
| 842 | return msg; |
| 843 | } |
| 844 | continue; |
| 845 | } |
| 846 | |
| 847 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 848 | (void) past_opcode_p; |
| 849 | #endif |
| 850 | /* We have an operand of some sort. */ |
| 851 | errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); |
| 852 | if (errmsg) |
| 853 | return errmsg; |
| 854 | |
| 855 | /* Done with this operand, continue with next one. */ |
| 856 | ++ syn; |
| 857 | } |
| 858 | |
| 859 | /* If we're at the end of the syntax string, we're done. */ |
| 860 | if (* syn == 0) |
| 861 | { |
| 862 | /* FIXME: For the moment we assume a valid `str' can only contain |
| 863 | blanks now. IE: We needn't try again with a longer version of |
| 864 | the insn and it is assumed that longer versions of insns appear |
| 865 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ |
| 866 | while (ISSPACE (* str)) |
| 867 | ++ str; |
| 868 | |
| 869 | if (* str != '\0') |
| 870 | return _("junk at end of line"); /* FIXME: would like to include `str' */ |
| 871 | |
| 872 | return NULL; |
| 873 | } |
| 874 | |
| 875 | /* We couldn't parse it. */ |
| 876 | return _("unrecognized instruction"); |
| 877 | } |
| 878 | \f |
| 879 | /* Main entry point. |
| 880 | This routine is called for each instruction to be assembled. |
| 881 | STR points to the insn to be assembled. |
| 882 | We assume all necessary tables have been initialized. |
| 883 | The assembled instruction, less any fixups, is stored in BUF. |
| 884 | Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value |
| 885 | still needs to be converted to target byte order, otherwise BUF is an array |
| 886 | of bytes in target byte order. |
| 887 | The result is a pointer to the insn's entry in the opcode table, |
| 888 | or NULL if an error occured (an error message will have already been |
| 889 | printed). |
| 890 | |
| 891 | Note that when processing (non-alias) macro-insns, |
| 892 | this function recurses. |
| 893 | |
| 894 | ??? It's possible to make this cpu-independent. |
| 895 | One would have to deal with a few minor things. |
| 896 | At this point in time doing so would be more of a curiosity than useful |
| 897 | [for example this file isn't _that_ big], but keeping the possibility in |
| 898 | mind helps keep the design clean. */ |
| 899 | |
| 900 | const CGEN_INSN * |
| 901 | mt_cgen_assemble_insn (CGEN_CPU_DESC cd, |
| 902 | const char *str, |
| 903 | CGEN_FIELDS *fields, |
| 904 | CGEN_INSN_BYTES_PTR buf, |
| 905 | char **errmsg) |
| 906 | { |
| 907 | const char *start; |
| 908 | CGEN_INSN_LIST *ilist; |
| 909 | const char *parse_errmsg = NULL; |
| 910 | const char *insert_errmsg = NULL; |
| 911 | int recognized_mnemonic = 0; |
| 912 | |
| 913 | /* Skip leading white space. */ |
| 914 | while (ISSPACE (* str)) |
| 915 | ++ str; |
| 916 | |
| 917 | /* The instructions are stored in hashed lists. |
| 918 | Get the first in the list. */ |
| 919 | ilist = CGEN_ASM_LOOKUP_INSN (cd, str); |
| 920 | |
| 921 | /* Keep looking until we find a match. */ |
| 922 | start = str; |
| 923 | for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) |
| 924 | { |
| 925 | const CGEN_INSN *insn = ilist->insn; |
| 926 | recognized_mnemonic = 1; |
| 927 | |
| 928 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED |
| 929 | /* Not usually needed as unsupported opcodes |
| 930 | shouldn't be in the hash lists. */ |
| 931 | /* Is this insn supported by the selected cpu? */ |
| 932 | if (! mt_cgen_insn_supported (cd, insn)) |
| 933 | continue; |
| 934 | #endif |
| 935 | /* If the RELAXED attribute is set, this is an insn that shouldn't be |
| 936 | chosen immediately. Instead, it is used during assembler/linker |
| 937 | relaxation if possible. */ |
| 938 | if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) |
| 939 | continue; |
| 940 | |
| 941 | str = start; |
| 942 | |
| 943 | /* Skip this insn if str doesn't look right lexically. */ |
| 944 | if (CGEN_INSN_RX (insn) != NULL && |
| 945 | regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) |
| 946 | continue; |
| 947 | |
| 948 | /* Allow parse/insert handlers to obtain length of insn. */ |
| 949 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); |
| 950 | |
| 951 | parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); |
| 952 | if (parse_errmsg != NULL) |
| 953 | continue; |
| 954 | |
| 955 | /* ??? 0 is passed for `pc'. */ |
| 956 | insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, |
| 957 | (bfd_vma) 0); |
| 958 | if (insert_errmsg != NULL) |
| 959 | continue; |
| 960 | |
| 961 | /* It is up to the caller to actually output the insn and any |
| 962 | queued relocs. */ |
| 963 | return insn; |
| 964 | } |
| 965 | |
| 966 | { |
| 967 | static char errbuf[150]; |
| 968 | const char *tmp_errmsg; |
| 969 | #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS |
| 970 | #define be_verbose 1 |
| 971 | #else |
| 972 | #define be_verbose 0 |
| 973 | #endif |
| 974 | |
| 975 | if (be_verbose) |
| 976 | { |
| 977 | /* If requesting verbose error messages, use insert_errmsg. |
| 978 | Failing that, use parse_errmsg. */ |
| 979 | tmp_errmsg = (insert_errmsg ? insert_errmsg : |
| 980 | parse_errmsg ? parse_errmsg : |
| 981 | recognized_mnemonic ? |
| 982 | _("unrecognized form of instruction") : |
| 983 | _("unrecognized instruction")); |
| 984 | |
| 985 | if (strlen (start) > 50) |
| 986 | /* xgettext:c-format */ |
| 987 | sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); |
| 988 | else |
| 989 | /* xgettext:c-format */ |
| 990 | sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); |
| 991 | } |
| 992 | else |
| 993 | { |
| 994 | if (strlen (start) > 50) |
| 995 | /* xgettext:c-format */ |
| 996 | sprintf (errbuf, _("bad instruction `%.50s...'"), start); |
| 997 | else |
| 998 | /* xgettext:c-format */ |
| 999 | sprintf (errbuf, _("bad instruction `%.50s'"), start); |
| 1000 | } |
| 1001 | |
| 1002 | *errmsg = errbuf; |
| 1003 | return NULL; |
| 1004 | } |
| 1005 | } |