| 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) 1996-2019 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 "or1k-desc.h" |
| 36 | #include "or1k-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 | |
| 54 | static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'"); |
| 55 | static const char * INVALID_STORE_RELOC = N_("relocation invalid for store"); |
| 56 | static const char * INVALID_RELOC_TYPE = N_("internal relocation type invalid"); |
| 57 | |
| 58 | #define CGEN_VERBOSE_ASSEMBLER_ERRORS |
| 59 | |
| 60 | static const char * |
| 61 | parse_disp26 (CGEN_CPU_DESC cd, |
| 62 | const char ** strp, |
| 63 | int opindex, |
| 64 | int opinfo ATTRIBUTE_UNUSED, |
| 65 | enum cgen_parse_operand_result * resultp, |
| 66 | bfd_vma * valuep) |
| 67 | { |
| 68 | const char *str = *strp; |
| 69 | const char *errmsg = NULL; |
| 70 | bfd_reloc_code_real_type reloc = BFD_RELOC_OR1K_REL_26; |
| 71 | |
| 72 | if (strncasecmp (str, "plta(", 5) == 0) |
| 73 | { |
| 74 | *strp = str + 5; |
| 75 | reloc = BFD_RELOC_OR1K_PLTA26; |
| 76 | } |
| 77 | else if (strncasecmp (str, "plt(", 4) == 0) |
| 78 | { |
| 79 | *strp = str + 4; |
| 80 | reloc = BFD_RELOC_OR1K_PLT26; |
| 81 | } |
| 82 | |
| 83 | errmsg = cgen_parse_address (cd, strp, opindex, reloc, resultp, valuep); |
| 84 | |
| 85 | if (reloc != BFD_RELOC_OR1K_REL_26) |
| 86 | { |
| 87 | if (**strp != ')') |
| 88 | errmsg = MISSING_CLOSING_PARENTHESIS; |
| 89 | else |
| 90 | ++*strp; |
| 91 | } |
| 92 | |
| 93 | return errmsg; |
| 94 | } |
| 95 | |
| 96 | static const char * |
| 97 | parse_disp21 (CGEN_CPU_DESC cd, |
| 98 | const char ** strp, |
| 99 | int opindex, |
| 100 | int opinfo ATTRIBUTE_UNUSED, |
| 101 | enum cgen_parse_operand_result * resultp, |
| 102 | bfd_vma * valuep) |
| 103 | { |
| 104 | const char *str = *strp; |
| 105 | const char *errmsg = NULL; |
| 106 | bfd_reloc_code_real_type reloc = BFD_RELOC_OR1K_PCREL_PG21; |
| 107 | |
| 108 | if (strncasecmp (str, "got(", 4) == 0) |
| 109 | { |
| 110 | *strp = str + 4; |
| 111 | reloc = BFD_RELOC_OR1K_GOT_PG21; |
| 112 | } |
| 113 | else if (strncasecmp (str, "tlsgd(", 6) == 0) |
| 114 | { |
| 115 | *strp = str + 6; |
| 116 | reloc = BFD_RELOC_OR1K_TLS_GD_PG21; |
| 117 | } |
| 118 | else if (strncasecmp (str, "tlsldm(", 7) == 0) |
| 119 | { |
| 120 | *strp = str + 7; |
| 121 | reloc = BFD_RELOC_OR1K_TLS_LDM_PG21; |
| 122 | } |
| 123 | else if (strncasecmp (str, "gottp(", 6) == 0) |
| 124 | { |
| 125 | *strp = str + 6; |
| 126 | reloc = BFD_RELOC_OR1K_TLS_IE_PG21; |
| 127 | } |
| 128 | |
| 129 | errmsg = cgen_parse_address (cd, strp, opindex, reloc, resultp, valuep); |
| 130 | |
| 131 | if (reloc != BFD_RELOC_OR1K_PCREL_PG21) |
| 132 | { |
| 133 | if (**strp != ')') |
| 134 | errmsg = MISSING_CLOSING_PARENTHESIS; |
| 135 | else |
| 136 | ++*strp; |
| 137 | } |
| 138 | |
| 139 | return errmsg; |
| 140 | } |
| 141 | |
| 142 | enum or1k_rclass |
| 143 | { |
| 144 | RCLASS_DIRECT = 0, |
| 145 | RCLASS_GOT = 1, |
| 146 | RCLASS_GOTPC = 2, |
| 147 | RCLASS_GOTOFF = 3, |
| 148 | RCLASS_TLSGD = 4, |
| 149 | RCLASS_TLSLDM = 5, |
| 150 | RCLASS_DTPOFF = 6, |
| 151 | RCLASS_GOTTPOFF = 7, |
| 152 | RCLASS_TPOFF = 8, |
| 153 | }; |
| 154 | |
| 155 | enum or1k_rtype |
| 156 | { |
| 157 | RTYPE_LO = 0, |
| 158 | RTYPE_SLO = 1, |
| 159 | RTYPE_PO = 2, |
| 160 | RTYPE_SPO = 3, |
| 161 | RTYPE_HI = 4, |
| 162 | RTYPE_AHI = 5, |
| 163 | }; |
| 164 | |
| 165 | #define RCLASS_SHIFT 3 |
| 166 | #define RTYPE_MASK 7 |
| 167 | |
| 168 | static const bfd_reloc_code_real_type or1k_imm16_relocs[][6] = { |
| 169 | { BFD_RELOC_LO16, |
| 170 | BFD_RELOC_OR1K_SLO16, |
| 171 | BFD_RELOC_OR1K_LO13, |
| 172 | BFD_RELOC_OR1K_SLO13, |
| 173 | BFD_RELOC_HI16, |
| 174 | BFD_RELOC_HI16_S, }, |
| 175 | { BFD_RELOC_OR1K_GOT16, |
| 176 | BFD_RELOC_UNUSED, |
| 177 | BFD_RELOC_OR1K_GOT_LO13, |
| 178 | BFD_RELOC_UNUSED, |
| 179 | BFD_RELOC_UNUSED, |
| 180 | BFD_RELOC_UNUSED }, |
| 181 | { BFD_RELOC_OR1K_GOTPC_LO16, |
| 182 | BFD_RELOC_UNUSED, |
| 183 | BFD_RELOC_UNUSED, |
| 184 | BFD_RELOC_UNUSED, |
| 185 | BFD_RELOC_OR1K_GOTPC_HI16, |
| 186 | BFD_RELOC_UNUSED }, |
| 187 | { BFD_RELOC_LO16_GOTOFF, |
| 188 | BFD_RELOC_OR1K_GOTOFF_SLO16, |
| 189 | BFD_RELOC_UNUSED, |
| 190 | BFD_RELOC_UNUSED, |
| 191 | BFD_RELOC_HI16_GOTOFF, |
| 192 | BFD_RELOC_HI16_S_GOTOFF }, |
| 193 | { BFD_RELOC_OR1K_TLS_GD_LO16, |
| 194 | BFD_RELOC_UNUSED, |
| 195 | BFD_RELOC_OR1K_TLS_GD_LO13, |
| 196 | BFD_RELOC_UNUSED, |
| 197 | BFD_RELOC_OR1K_TLS_GD_HI16, |
| 198 | BFD_RELOC_UNUSED }, |
| 199 | { BFD_RELOC_OR1K_TLS_LDM_LO16, |
| 200 | BFD_RELOC_UNUSED, |
| 201 | BFD_RELOC_OR1K_TLS_LDM_LO13, |
| 202 | BFD_RELOC_UNUSED, |
| 203 | BFD_RELOC_OR1K_TLS_LDM_HI16, |
| 204 | BFD_RELOC_UNUSED }, |
| 205 | { BFD_RELOC_OR1K_TLS_LDO_LO16, |
| 206 | BFD_RELOC_UNUSED, |
| 207 | BFD_RELOC_UNUSED, |
| 208 | BFD_RELOC_UNUSED, |
| 209 | BFD_RELOC_OR1K_TLS_LDO_HI16, |
| 210 | BFD_RELOC_UNUSED }, |
| 211 | { BFD_RELOC_OR1K_TLS_IE_LO16, |
| 212 | BFD_RELOC_UNUSED, |
| 213 | BFD_RELOC_OR1K_TLS_IE_LO13, |
| 214 | BFD_RELOC_UNUSED, |
| 215 | BFD_RELOC_OR1K_TLS_IE_HI16, |
| 216 | BFD_RELOC_OR1K_TLS_IE_AHI16 }, |
| 217 | { BFD_RELOC_OR1K_TLS_LE_LO16, |
| 218 | BFD_RELOC_OR1K_TLS_LE_SLO16, |
| 219 | BFD_RELOC_UNUSED, |
| 220 | BFD_RELOC_UNUSED, |
| 221 | BFD_RELOC_OR1K_TLS_LE_HI16, |
| 222 | BFD_RELOC_OR1K_TLS_LE_AHI16 }, |
| 223 | }; |
| 224 | |
| 225 | static int |
| 226 | parse_reloc (const char **strp) |
| 227 | { |
| 228 | const char *str = *strp; |
| 229 | enum or1k_rclass cls = RCLASS_DIRECT; |
| 230 | enum or1k_rtype typ; |
| 231 | |
| 232 | if (strncasecmp (str, "got(", 4) == 0) |
| 233 | { |
| 234 | *strp = str + 4; |
| 235 | return (RCLASS_GOT << RCLASS_SHIFT) | RTYPE_LO; |
| 236 | } |
| 237 | if (strncasecmp (str, "gotpo(", 6) == 0) |
| 238 | { |
| 239 | *strp = str + 6; |
| 240 | return (RCLASS_GOT << RCLASS_SHIFT) | RTYPE_PO; |
| 241 | } |
| 242 | if (strncasecmp (str, "gottppo(", 8) == 0) |
| 243 | { |
| 244 | *strp = str + 8; |
| 245 | return (RCLASS_GOTTPOFF << RCLASS_SHIFT) | RTYPE_PO; |
| 246 | } |
| 247 | |
| 248 | if (strncasecmp (str, "gotpc", 5) == 0) |
| 249 | { |
| 250 | str += 5; |
| 251 | cls = RCLASS_GOTPC; |
| 252 | } |
| 253 | else if (strncasecmp (str, "gotoff", 6) == 0) |
| 254 | { |
| 255 | str += 6; |
| 256 | cls = RCLASS_GOTOFF; |
| 257 | } |
| 258 | else if (strncasecmp (str, "tlsgd", 5) == 0) |
| 259 | { |
| 260 | str += 5; |
| 261 | cls = RCLASS_TLSGD; |
| 262 | } |
| 263 | else if (strncasecmp (str, "tlsldm", 6) == 0) |
| 264 | { |
| 265 | str += 6; |
| 266 | cls = RCLASS_TLSLDM; |
| 267 | } |
| 268 | else if (strncasecmp (str, "dtpoff", 6) == 0) |
| 269 | { |
| 270 | str += 6; |
| 271 | cls = RCLASS_DTPOFF; |
| 272 | } |
| 273 | else if (strncasecmp (str, "gottpoff", 8) == 0) |
| 274 | { |
| 275 | str += 8; |
| 276 | cls = RCLASS_GOTTPOFF; |
| 277 | } |
| 278 | else if (strncasecmp (str, "tpoff", 5) == 0) |
| 279 | { |
| 280 | str += 5; |
| 281 | cls = RCLASS_TPOFF; |
| 282 | } |
| 283 | |
| 284 | if (strncasecmp (str, "hi(", 3) == 0) |
| 285 | { |
| 286 | str += 3; |
| 287 | typ = RTYPE_HI; |
| 288 | } |
| 289 | else if (strncasecmp (str, "lo(", 3) == 0) |
| 290 | { |
| 291 | str += 3; |
| 292 | typ = RTYPE_LO; |
| 293 | } |
| 294 | else if (strncasecmp (str, "ha(", 3) == 0) |
| 295 | { |
| 296 | str += 3; |
| 297 | typ = RTYPE_AHI; |
| 298 | } |
| 299 | else if (strncasecmp (str, "po(", 3) == 0 && cls != RCLASS_GOTTPOFF) |
| 300 | { |
| 301 | str += 3; |
| 302 | typ = RTYPE_PO; |
| 303 | } |
| 304 | else |
| 305 | return -1; |
| 306 | |
| 307 | *strp = str; |
| 308 | return (cls << RCLASS_SHIFT) | typ; |
| 309 | } |
| 310 | |
| 311 | static const char * |
| 312 | parse_imm16 (CGEN_CPU_DESC cd, const char **strp, int opindex, |
| 313 | long *valuep, int splitp) |
| 314 | { |
| 315 | const char *errmsg; |
| 316 | enum cgen_parse_operand_result result_type; |
| 317 | bfd_reloc_code_real_type reloc = BFD_RELOC_UNUSED; |
| 318 | enum or1k_rtype reloc_type; |
| 319 | int reloc_code; |
| 320 | bfd_vma ret; |
| 321 | |
| 322 | if (**strp == '#') |
| 323 | ++*strp; |
| 324 | |
| 325 | reloc_code = parse_reloc (strp); |
| 326 | reloc_type = reloc_code & RTYPE_MASK; |
| 327 | if (reloc_code >= 0) |
| 328 | { |
| 329 | enum or1k_rclass reloc_class = reloc_code >> RCLASS_SHIFT; |
| 330 | if (splitp) |
| 331 | { |
| 332 | if ((reloc_type == RTYPE_LO || reloc_type == RTYPE_PO) |
| 333 | && reloc_class != RCLASS_GOT) |
| 334 | /* If split we or up the type to RTYPE_SLO or RTYPE_SPO. */ |
| 335 | reloc_type |= 1; |
| 336 | else |
| 337 | return INVALID_STORE_RELOC; |
| 338 | } |
| 339 | reloc = or1k_imm16_relocs[reloc_class][reloc_type]; |
| 340 | } |
| 341 | |
| 342 | if (reloc != BFD_RELOC_UNUSED) |
| 343 | { |
| 344 | bfd_vma value; |
| 345 | |
| 346 | errmsg = cgen_parse_address (cd, strp, opindex, reloc, |
| 347 | &result_type, &value); |
| 348 | if (**strp != ')') |
| 349 | errmsg = MISSING_CLOSING_PARENTHESIS; |
| 350 | ++*strp; |
| 351 | |
| 352 | ret = value; |
| 353 | |
| 354 | if (errmsg == NULL && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) |
| 355 | switch (reloc_type) |
| 356 | { |
| 357 | case RTYPE_AHI: |
| 358 | ret += 0x8000; |
| 359 | /* FALLTHRU */ |
| 360 | case RTYPE_HI: |
| 361 | ret >>= 16; |
| 362 | /* FALLTHRU */ |
| 363 | case RTYPE_LO: |
| 364 | case RTYPE_SLO: |
| 365 | ret &= 0xffff; |
| 366 | ret = (ret ^ 0x8000) - 0x8000; |
| 367 | break; |
| 368 | case RTYPE_PO: |
| 369 | case RTYPE_SPO: |
| 370 | ret &= 0x1fff; |
| 371 | break; |
| 372 | default: |
| 373 | errmsg = INVALID_RELOC_TYPE; |
| 374 | } |
| 375 | } |
| 376 | else |
| 377 | { |
| 378 | long value; |
| 379 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value); |
| 380 | ret = value; |
| 381 | } |
| 382 | |
| 383 | if (errmsg == NULL) |
| 384 | *valuep = ret; |
| 385 | |
| 386 | return errmsg; |
| 387 | } |
| 388 | |
| 389 | static const char * |
| 390 | parse_simm16 (CGEN_CPU_DESC cd, const char **strp, int opindex, long *valuep) |
| 391 | { |
| 392 | return parse_imm16(cd, strp, opindex, (long *) valuep, 0); |
| 393 | } |
| 394 | |
| 395 | static const char * |
| 396 | parse_simm16_split (CGEN_CPU_DESC cd, const char **strp, int opindex, |
| 397 | long *valuep) |
| 398 | { |
| 399 | return parse_imm16(cd, strp, opindex, (long *) valuep, 1); |
| 400 | } |
| 401 | |
| 402 | static const char * |
| 403 | parse_uimm16 (CGEN_CPU_DESC cd, const char **strp, int opindex, |
| 404 | unsigned long *valuep) |
| 405 | { |
| 406 | const char *errmsg = parse_imm16(cd, strp, opindex, (long *) valuep, 0); |
| 407 | if (errmsg == NULL) |
| 408 | *valuep &= 0xffff; |
| 409 | return errmsg; |
| 410 | } |
| 411 | |
| 412 | static const char * |
| 413 | parse_uimm16_split (CGEN_CPU_DESC cd, const char **strp, int opindex, |
| 414 | unsigned long *valuep) |
| 415 | { |
| 416 | const char *errmsg = parse_imm16(cd, strp, opindex, (long *) valuep, 1); |
| 417 | if (errmsg == NULL) |
| 418 | *valuep &= 0xffff; |
| 419 | return errmsg; |
| 420 | } |
| 421 | |
| 422 | /* Parse register pairs with syntax rA,rB to a flag + rA value. */ |
| 423 | |
| 424 | static const char * |
| 425 | parse_regpair (CGEN_CPU_DESC cd, const char **strp, |
| 426 | int opindex ATTRIBUTE_UNUSED, unsigned long *valuep) |
| 427 | { |
| 428 | long reg1_index; |
| 429 | long reg2_index; |
| 430 | const char *errmsg; |
| 431 | |
| 432 | /* The first part should just be a register. */ |
| 433 | errmsg = cgen_parse_keyword (cd, strp, &or1k_cgen_opval_h_gpr, |
| 434 | ®1_index); |
| 435 | |
| 436 | /* If that worked skip the comma separator. */ |
| 437 | if (errmsg == NULL) |
| 438 | { |
| 439 | if (**strp == ',') |
| 440 | ++*strp; |
| 441 | else |
| 442 | errmsg = "Unexpected character, expected ','"; |
| 443 | } |
| 444 | |
| 445 | /* If that worked the next part is just another register. */ |
| 446 | if (errmsg == NULL) |
| 447 | errmsg = cgen_parse_keyword (cd, strp, &or1k_cgen_opval_h_gpr, |
| 448 | ®2_index); |
| 449 | |
| 450 | /* Validate the register pair is valid and create the output value. */ |
| 451 | if (errmsg == NULL) |
| 452 | { |
| 453 | int regoffset = reg2_index - reg1_index; |
| 454 | |
| 455 | if (regoffset == 1 || regoffset == 2) |
| 456 | { |
| 457 | unsigned short offsetmask; |
| 458 | unsigned short value; |
| 459 | |
| 460 | offsetmask = ((regoffset == 2 ? 1 : 0) << 5); |
| 461 | value = offsetmask | reg1_index; |
| 462 | |
| 463 | *valuep = value; |
| 464 | } |
| 465 | else |
| 466 | errmsg = "Invalid register pair, offset not 1 or 2."; |
| 467 | } |
| 468 | |
| 469 | return errmsg; |
| 470 | } |
| 471 | |
| 472 | /* -- */ |
| 473 | |
| 474 | const char * or1k_cgen_parse_operand |
| 475 | (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); |
| 476 | |
| 477 | /* Main entry point for operand parsing. |
| 478 | |
| 479 | This function is basically just a big switch statement. Earlier versions |
| 480 | used tables to look up the function to use, but |
| 481 | - if the table contains both assembler and disassembler functions then |
| 482 | the disassembler contains much of the assembler and vice-versa, |
| 483 | - there's a lot of inlining possibilities as things grow, |
| 484 | - using a switch statement avoids the function call overhead. |
| 485 | |
| 486 | This function could be moved into `parse_insn_normal', but keeping it |
| 487 | separate makes clear the interface between `parse_insn_normal' and each of |
| 488 | the handlers. */ |
| 489 | |
| 490 | const char * |
| 491 | or1k_cgen_parse_operand (CGEN_CPU_DESC cd, |
| 492 | int opindex, |
| 493 | const char ** strp, |
| 494 | CGEN_FIELDS * fields) |
| 495 | { |
| 496 | const char * errmsg = NULL; |
| 497 | /* Used by scalar operands that still need to be parsed. */ |
| 498 | long junk ATTRIBUTE_UNUSED; |
| 499 | |
| 500 | switch (opindex) |
| 501 | { |
| 502 | case OR1K_OPERAND_DISP21 : |
| 503 | { |
| 504 | bfd_vma value = 0; |
| 505 | errmsg = parse_disp21 (cd, strp, OR1K_OPERAND_DISP21, 0, NULL, & value); |
| 506 | fields->f_disp21 = value; |
| 507 | } |
| 508 | break; |
| 509 | case OR1K_OPERAND_DISP26 : |
| 510 | { |
| 511 | bfd_vma value = 0; |
| 512 | errmsg = parse_disp26 (cd, strp, OR1K_OPERAND_DISP26, 0, NULL, & value); |
| 513 | fields->f_disp26 = value; |
| 514 | } |
| 515 | break; |
| 516 | case OR1K_OPERAND_RA : |
| 517 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r2); |
| 518 | break; |
| 519 | case OR1K_OPERAND_RAD32F : |
| 520 | errmsg = parse_regpair (cd, strp, OR1K_OPERAND_RAD32F, (unsigned long *) (& fields->f_rad32)); |
| 521 | break; |
| 522 | case OR1K_OPERAND_RADF : |
| 523 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r2); |
| 524 | break; |
| 525 | case OR1K_OPERAND_RADI : |
| 526 | errmsg = parse_regpair (cd, strp, OR1K_OPERAND_RADI, (unsigned long *) (& fields->f_rad32)); |
| 527 | break; |
| 528 | case OR1K_OPERAND_RASF : |
| 529 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r2); |
| 530 | break; |
| 531 | case OR1K_OPERAND_RB : |
| 532 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r3); |
| 533 | break; |
| 534 | case OR1K_OPERAND_RBD32F : |
| 535 | errmsg = parse_regpair (cd, strp, OR1K_OPERAND_RBD32F, (unsigned long *) (& fields->f_rbd32)); |
| 536 | break; |
| 537 | case OR1K_OPERAND_RBDF : |
| 538 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r3); |
| 539 | break; |
| 540 | case OR1K_OPERAND_RBDI : |
| 541 | errmsg = parse_regpair (cd, strp, OR1K_OPERAND_RBDI, (unsigned long *) (& fields->f_rbd32)); |
| 542 | break; |
| 543 | case OR1K_OPERAND_RBSF : |
| 544 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r3); |
| 545 | break; |
| 546 | case OR1K_OPERAND_RD : |
| 547 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r1); |
| 548 | break; |
| 549 | case OR1K_OPERAND_RDD32F : |
| 550 | errmsg = parse_regpair (cd, strp, OR1K_OPERAND_RDD32F, (unsigned long *) (& fields->f_rdd32)); |
| 551 | break; |
| 552 | case OR1K_OPERAND_RDDF : |
| 553 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r1); |
| 554 | break; |
| 555 | case OR1K_OPERAND_RDDI : |
| 556 | errmsg = parse_regpair (cd, strp, OR1K_OPERAND_RDDI, (unsigned long *) (& fields->f_rdd32)); |
| 557 | break; |
| 558 | case OR1K_OPERAND_RDSF : |
| 559 | errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r1); |
| 560 | break; |
| 561 | case OR1K_OPERAND_SIMM16 : |
| 562 | errmsg = parse_simm16 (cd, strp, OR1K_OPERAND_SIMM16, (long *) (& fields->f_simm16)); |
| 563 | break; |
| 564 | case OR1K_OPERAND_SIMM16_SPLIT : |
| 565 | errmsg = parse_simm16_split (cd, strp, OR1K_OPERAND_SIMM16_SPLIT, (long *) (& fields->f_simm16_split)); |
| 566 | break; |
| 567 | case OR1K_OPERAND_UIMM16 : |
| 568 | errmsg = parse_uimm16 (cd, strp, OR1K_OPERAND_UIMM16, (unsigned long *) (& fields->f_uimm16)); |
| 569 | break; |
| 570 | case OR1K_OPERAND_UIMM16_SPLIT : |
| 571 | errmsg = parse_uimm16_split (cd, strp, OR1K_OPERAND_UIMM16_SPLIT, (unsigned long *) (& fields->f_uimm16_split)); |
| 572 | break; |
| 573 | case OR1K_OPERAND_UIMM6 : |
| 574 | errmsg = cgen_parse_unsigned_integer (cd, strp, OR1K_OPERAND_UIMM6, (unsigned long *) (& fields->f_uimm6)); |
| 575 | break; |
| 576 | |
| 577 | default : |
| 578 | /* xgettext:c-format */ |
| 579 | opcodes_error_handler |
| 580 | (_("internal error: unrecognized field %d while parsing"), |
| 581 | opindex); |
| 582 | abort (); |
| 583 | } |
| 584 | |
| 585 | return errmsg; |
| 586 | } |
| 587 | |
| 588 | cgen_parse_fn * const or1k_cgen_parse_handlers[] = |
| 589 | { |
| 590 | parse_insn_normal, |
| 591 | }; |
| 592 | |
| 593 | void |
| 594 | or1k_cgen_init_asm (CGEN_CPU_DESC cd) |
| 595 | { |
| 596 | or1k_cgen_init_opcode_table (cd); |
| 597 | or1k_cgen_init_ibld_table (cd); |
| 598 | cd->parse_handlers = & or1k_cgen_parse_handlers[0]; |
| 599 | cd->parse_operand = or1k_cgen_parse_operand; |
| 600 | #ifdef CGEN_ASM_INIT_HOOK |
| 601 | CGEN_ASM_INIT_HOOK |
| 602 | #endif |
| 603 | } |
| 604 | |
| 605 | \f |
| 606 | |
| 607 | /* Regex construction routine. |
| 608 | |
| 609 | This translates an opcode syntax string into a regex string, |
| 610 | by replacing any non-character syntax element (such as an |
| 611 | opcode) with the pattern '.*' |
| 612 | |
| 613 | It then compiles the regex and stores it in the opcode, for |
| 614 | later use by or1k_cgen_assemble_insn |
| 615 | |
| 616 | Returns NULL for success, an error message for failure. */ |
| 617 | |
| 618 | char * |
| 619 | or1k_cgen_build_insn_regex (CGEN_INSN *insn) |
| 620 | { |
| 621 | CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); |
| 622 | const char *mnem = CGEN_INSN_MNEMONIC (insn); |
| 623 | char rxbuf[CGEN_MAX_RX_ELEMENTS]; |
| 624 | char *rx = rxbuf; |
| 625 | const CGEN_SYNTAX_CHAR_TYPE *syn; |
| 626 | int reg_err; |
| 627 | |
| 628 | syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); |
| 629 | |
| 630 | /* Mnemonics come first in the syntax string. */ |
| 631 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) |
| 632 | return _("missing mnemonic in syntax string"); |
| 633 | ++syn; |
| 634 | |
| 635 | /* Generate a case sensitive regular expression that emulates case |
| 636 | insensitive matching in the "C" locale. We cannot generate a case |
| 637 | insensitive regular expression because in Turkish locales, 'i' and 'I' |
| 638 | are not equal modulo case conversion. */ |
| 639 | |
| 640 | /* Copy the literal mnemonic out of the insn. */ |
| 641 | for (; *mnem; mnem++) |
| 642 | { |
| 643 | char c = *mnem; |
| 644 | |
| 645 | if (ISALPHA (c)) |
| 646 | { |
| 647 | *rx++ = '['; |
| 648 | *rx++ = TOLOWER (c); |
| 649 | *rx++ = TOUPPER (c); |
| 650 | *rx++ = ']'; |
| 651 | } |
| 652 | else |
| 653 | *rx++ = c; |
| 654 | } |
| 655 | |
| 656 | /* Copy any remaining literals from the syntax string into the rx. */ |
| 657 | for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) |
| 658 | { |
| 659 | if (CGEN_SYNTAX_CHAR_P (* syn)) |
| 660 | { |
| 661 | char c = CGEN_SYNTAX_CHAR (* syn); |
| 662 | |
| 663 | switch (c) |
| 664 | { |
| 665 | /* Escape any regex metacharacters in the syntax. */ |
| 666 | case '.': case '[': case '\\': |
| 667 | case '*': case '^': case '$': |
| 668 | |
| 669 | #ifdef CGEN_ESCAPE_EXTENDED_REGEX |
| 670 | case '?': case '{': case '}': |
| 671 | case '(': case ')': case '*': |
| 672 | case '|': case '+': case ']': |
| 673 | #endif |
| 674 | *rx++ = '\\'; |
| 675 | *rx++ = c; |
| 676 | break; |
| 677 | |
| 678 | default: |
| 679 | if (ISALPHA (c)) |
| 680 | { |
| 681 | *rx++ = '['; |
| 682 | *rx++ = TOLOWER (c); |
| 683 | *rx++ = TOUPPER (c); |
| 684 | *rx++ = ']'; |
| 685 | } |
| 686 | else |
| 687 | *rx++ = c; |
| 688 | break; |
| 689 | } |
| 690 | } |
| 691 | else |
| 692 | { |
| 693 | /* Replace non-syntax fields with globs. */ |
| 694 | *rx++ = '.'; |
| 695 | *rx++ = '*'; |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | /* Trailing whitespace ok. */ |
| 700 | * rx++ = '['; |
| 701 | * rx++ = ' '; |
| 702 | * rx++ = '\t'; |
| 703 | * rx++ = ']'; |
| 704 | * rx++ = '*'; |
| 705 | |
| 706 | /* But anchor it after that. */ |
| 707 | * rx++ = '$'; |
| 708 | * rx = '\0'; |
| 709 | |
| 710 | CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); |
| 711 | reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); |
| 712 | |
| 713 | if (reg_err == 0) |
| 714 | return NULL; |
| 715 | else |
| 716 | { |
| 717 | static char msg[80]; |
| 718 | |
| 719 | regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); |
| 720 | regfree ((regex_t *) CGEN_INSN_RX (insn)); |
| 721 | free (CGEN_INSN_RX (insn)); |
| 722 | (CGEN_INSN_RX (insn)) = NULL; |
| 723 | return msg; |
| 724 | } |
| 725 | } |
| 726 | |
| 727 | \f |
| 728 | /* Default insn parser. |
| 729 | |
| 730 | The syntax string is scanned and operands are parsed and stored in FIELDS. |
| 731 | Relocs are queued as we go via other callbacks. |
| 732 | |
| 733 | ??? Note that this is currently an all-or-nothing parser. If we fail to |
| 734 | parse the instruction, we return 0 and the caller will start over from |
| 735 | the beginning. Backtracking will be necessary in parsing subexpressions, |
| 736 | but that can be handled there. Not handling backtracking here may get |
| 737 | expensive in the case of the m68k. Deal with later. |
| 738 | |
| 739 | Returns NULL for success, an error message for failure. */ |
| 740 | |
| 741 | static const char * |
| 742 | parse_insn_normal (CGEN_CPU_DESC cd, |
| 743 | const CGEN_INSN *insn, |
| 744 | const char **strp, |
| 745 | CGEN_FIELDS *fields) |
| 746 | { |
| 747 | /* ??? Runtime added insns not handled yet. */ |
| 748 | const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); |
| 749 | const char *str = *strp; |
| 750 | const char *errmsg; |
| 751 | const char *p; |
| 752 | const CGEN_SYNTAX_CHAR_TYPE * syn; |
| 753 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 754 | /* FIXME: wip */ |
| 755 | int past_opcode_p; |
| 756 | #endif |
| 757 | |
| 758 | /* For now we assume the mnemonic is first (there are no leading operands). |
| 759 | We can parse it without needing to set up operand parsing. |
| 760 | GAS's input scrubber will ensure mnemonics are lowercase, but we may |
| 761 | not be called from GAS. */ |
| 762 | p = CGEN_INSN_MNEMONIC (insn); |
| 763 | while (*p && TOLOWER (*p) == TOLOWER (*str)) |
| 764 | ++p, ++str; |
| 765 | |
| 766 | if (* p) |
| 767 | return _("unrecognized instruction"); |
| 768 | |
| 769 | #ifndef CGEN_MNEMONIC_OPERANDS |
| 770 | if (* str && ! ISSPACE (* str)) |
| 771 | return _("unrecognized instruction"); |
| 772 | #endif |
| 773 | |
| 774 | CGEN_INIT_PARSE (cd); |
| 775 | cgen_init_parse_operand (cd); |
| 776 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 777 | past_opcode_p = 0; |
| 778 | #endif |
| 779 | |
| 780 | /* We don't check for (*str != '\0') here because we want to parse |
| 781 | any trailing fake arguments in the syntax string. */ |
| 782 | syn = CGEN_SYNTAX_STRING (syntax); |
| 783 | |
| 784 | /* Mnemonics come first for now, ensure valid string. */ |
| 785 | if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) |
| 786 | abort (); |
| 787 | |
| 788 | ++syn; |
| 789 | |
| 790 | while (* syn != 0) |
| 791 | { |
| 792 | /* Non operand chars must match exactly. */ |
| 793 | if (CGEN_SYNTAX_CHAR_P (* syn)) |
| 794 | { |
| 795 | /* FIXME: While we allow for non-GAS callers above, we assume the |
| 796 | first char after the mnemonic part is a space. */ |
| 797 | /* FIXME: We also take inappropriate advantage of the fact that |
| 798 | GAS's input scrubber will remove extraneous blanks. */ |
| 799 | if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) |
| 800 | { |
| 801 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 802 | if (CGEN_SYNTAX_CHAR(* syn) == ' ') |
| 803 | past_opcode_p = 1; |
| 804 | #endif |
| 805 | ++ syn; |
| 806 | ++ str; |
| 807 | } |
| 808 | else if (*str) |
| 809 | { |
| 810 | /* Syntax char didn't match. Can't be this insn. */ |
| 811 | static char msg [80]; |
| 812 | |
| 813 | /* xgettext:c-format */ |
| 814 | sprintf (msg, _("syntax error (expected char `%c', found `%c')"), |
| 815 | CGEN_SYNTAX_CHAR(*syn), *str); |
| 816 | return msg; |
| 817 | } |
| 818 | else |
| 819 | { |
| 820 | /* Ran out of input. */ |
| 821 | static char msg [80]; |
| 822 | |
| 823 | /* xgettext:c-format */ |
| 824 | sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), |
| 825 | CGEN_SYNTAX_CHAR(*syn)); |
| 826 | return msg; |
| 827 | } |
| 828 | continue; |
| 829 | } |
| 830 | |
| 831 | #ifdef CGEN_MNEMONIC_OPERANDS |
| 832 | (void) past_opcode_p; |
| 833 | #endif |
| 834 | /* We have an operand of some sort. */ |
| 835 | errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); |
| 836 | if (errmsg) |
| 837 | return errmsg; |
| 838 | |
| 839 | /* Done with this operand, continue with next one. */ |
| 840 | ++ syn; |
| 841 | } |
| 842 | |
| 843 | /* If we're at the end of the syntax string, we're done. */ |
| 844 | if (* syn == 0) |
| 845 | { |
| 846 | /* FIXME: For the moment we assume a valid `str' can only contain |
| 847 | blanks now. IE: We needn't try again with a longer version of |
| 848 | the insn and it is assumed that longer versions of insns appear |
| 849 | before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ |
| 850 | while (ISSPACE (* str)) |
| 851 | ++ str; |
| 852 | |
| 853 | if (* str != '\0') |
| 854 | return _("junk at end of line"); /* FIXME: would like to include `str' */ |
| 855 | |
| 856 | return NULL; |
| 857 | } |
| 858 | |
| 859 | /* We couldn't parse it. */ |
| 860 | return _("unrecognized instruction"); |
| 861 | } |
| 862 | \f |
| 863 | /* Main entry point. |
| 864 | This routine is called for each instruction to be assembled. |
| 865 | STR points to the insn to be assembled. |
| 866 | We assume all necessary tables have been initialized. |
| 867 | The assembled instruction, less any fixups, is stored in BUF. |
| 868 | Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value |
| 869 | still needs to be converted to target byte order, otherwise BUF is an array |
| 870 | of bytes in target byte order. |
| 871 | The result is a pointer to the insn's entry in the opcode table, |
| 872 | or NULL if an error occured (an error message will have already been |
| 873 | printed). |
| 874 | |
| 875 | Note that when processing (non-alias) macro-insns, |
| 876 | this function recurses. |
| 877 | |
| 878 | ??? It's possible to make this cpu-independent. |
| 879 | One would have to deal with a few minor things. |
| 880 | At this point in time doing so would be more of a curiosity than useful |
| 881 | [for example this file isn't _that_ big], but keeping the possibility in |
| 882 | mind helps keep the design clean. */ |
| 883 | |
| 884 | const CGEN_INSN * |
| 885 | or1k_cgen_assemble_insn (CGEN_CPU_DESC cd, |
| 886 | const char *str, |
| 887 | CGEN_FIELDS *fields, |
| 888 | CGEN_INSN_BYTES_PTR buf, |
| 889 | char **errmsg) |
| 890 | { |
| 891 | const char *start; |
| 892 | CGEN_INSN_LIST *ilist; |
| 893 | const char *parse_errmsg = NULL; |
| 894 | const char *insert_errmsg = NULL; |
| 895 | int recognized_mnemonic = 0; |
| 896 | |
| 897 | /* Skip leading white space. */ |
| 898 | while (ISSPACE (* str)) |
| 899 | ++ str; |
| 900 | |
| 901 | /* The instructions are stored in hashed lists. |
| 902 | Get the first in the list. */ |
| 903 | ilist = CGEN_ASM_LOOKUP_INSN (cd, str); |
| 904 | |
| 905 | /* Keep looking until we find a match. */ |
| 906 | start = str; |
| 907 | for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) |
| 908 | { |
| 909 | const CGEN_INSN *insn = ilist->insn; |
| 910 | recognized_mnemonic = 1; |
| 911 | |
| 912 | #ifdef CGEN_VALIDATE_INSN_SUPPORTED |
| 913 | /* Not usually needed as unsupported opcodes |
| 914 | shouldn't be in the hash lists. */ |
| 915 | /* Is this insn supported by the selected cpu? */ |
| 916 | if (! or1k_cgen_insn_supported (cd, insn)) |
| 917 | continue; |
| 918 | #endif |
| 919 | /* If the RELAXED attribute is set, this is an insn that shouldn't be |
| 920 | chosen immediately. Instead, it is used during assembler/linker |
| 921 | relaxation if possible. */ |
| 922 | if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) |
| 923 | continue; |
| 924 | |
| 925 | str = start; |
| 926 | |
| 927 | /* Skip this insn if str doesn't look right lexically. */ |
| 928 | if (CGEN_INSN_RX (insn) != NULL && |
| 929 | regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) |
| 930 | continue; |
| 931 | |
| 932 | /* Allow parse/insert handlers to obtain length of insn. */ |
| 933 | CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); |
| 934 | |
| 935 | parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); |
| 936 | if (parse_errmsg != NULL) |
| 937 | continue; |
| 938 | |
| 939 | /* ??? 0 is passed for `pc'. */ |
| 940 | insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, |
| 941 | (bfd_vma) 0); |
| 942 | if (insert_errmsg != NULL) |
| 943 | continue; |
| 944 | |
| 945 | /* It is up to the caller to actually output the insn and any |
| 946 | queued relocs. */ |
| 947 | return insn; |
| 948 | } |
| 949 | |
| 950 | { |
| 951 | static char errbuf[150]; |
| 952 | const char *tmp_errmsg; |
| 953 | #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS |
| 954 | #define be_verbose 1 |
| 955 | #else |
| 956 | #define be_verbose 0 |
| 957 | #endif |
| 958 | |
| 959 | if (be_verbose) |
| 960 | { |
| 961 | /* If requesting verbose error messages, use insert_errmsg. |
| 962 | Failing that, use parse_errmsg. */ |
| 963 | tmp_errmsg = (insert_errmsg ? insert_errmsg : |
| 964 | parse_errmsg ? parse_errmsg : |
| 965 | recognized_mnemonic ? |
| 966 | _("unrecognized form of instruction") : |
| 967 | _("unrecognized instruction")); |
| 968 | |
| 969 | if (strlen (start) > 50) |
| 970 | /* xgettext:c-format */ |
| 971 | sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); |
| 972 | else |
| 973 | /* xgettext:c-format */ |
| 974 | sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); |
| 975 | } |
| 976 | else |
| 977 | { |
| 978 | if (strlen (start) > 50) |
| 979 | /* xgettext:c-format */ |
| 980 | sprintf (errbuf, _("bad instruction `%.50s...'"), start); |
| 981 | else |
| 982 | /* xgettext:c-format */ |
| 983 | sprintf (errbuf, _("bad instruction `%.50s'"), start); |
| 984 | } |
| 985 | |
| 986 | *errmsg = errbuf; |
| 987 | return NULL; |
| 988 | } |
| 989 | } |