| 1 | /* tc-c30.c -- Assembly code for the Texas Instruments TMS320C30 |
| 2 | Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
| 3 | Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au) |
| 4 | |
| 5 | This file is part of GAS, the GNU Assembler. |
| 6 | |
| 7 | GAS is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GAS; see the file COPYING. If not, write to the Free |
| 19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 20 | 02111-1307, USA. */ |
| 21 | |
| 22 | /* Texas Instruments TMS320C30 machine specific gas. |
| 23 | Written by Steven Haworth (steve@pm.cse.rmit.edu.au). |
| 24 | Bugs & suggestions are completely welcome. This is free software. |
| 25 | Please help us make it better. */ |
| 26 | |
| 27 | #include "as.h" |
| 28 | #include "safe-ctype.h" |
| 29 | #include "opcode/tic30.h" |
| 30 | |
| 31 | /* Put here all non-digit non-letter charcters that may occur in an |
| 32 | operand. */ |
| 33 | static char operand_special_chars[] = "%$-+(,)*._~/<>&^!:[@]"; |
| 34 | static char *ordinal_names[] = { |
| 35 | "first", "second", "third", "fourth", "fifth" |
| 36 | }; |
| 37 | |
| 38 | const int md_reloc_size = 0; |
| 39 | |
| 40 | const char comment_chars[] = ";"; |
| 41 | const char line_comment_chars[] = "*"; |
| 42 | const char line_separator_chars[] = ""; |
| 43 | |
| 44 | const char *md_shortopts = ""; |
| 45 | struct option md_longopts[] = { |
| 46 | {NULL, no_argument, NULL, 0} |
| 47 | }; |
| 48 | |
| 49 | size_t md_longopts_size = sizeof (md_longopts); |
| 50 | |
| 51 | /* Chars that mean this number is a floating point constant. */ |
| 52 | /* As in 0f12.456 */ |
| 53 | /* or 0d1.2345e12 */ |
| 54 | const char FLT_CHARS[] = "fFdDxX"; |
| 55 | |
| 56 | /* Chars that can be used to separate mant from exp in floating point |
| 57 | nums. */ |
| 58 | const char EXP_CHARS[] = "eE"; |
| 59 | |
| 60 | /* tables for lexical analysis */ |
| 61 | static char opcode_chars[256]; |
| 62 | static char register_chars[256]; |
| 63 | static char operand_chars[256]; |
| 64 | static char space_chars[256]; |
| 65 | static char identifier_chars[256]; |
| 66 | static char digit_chars[256]; |
| 67 | |
| 68 | /* lexical macros */ |
| 69 | #define is_opcode_char(x) (opcode_chars[(unsigned char) x]) |
| 70 | #define is_operand_char(x) (operand_chars[(unsigned char) x]) |
| 71 | #define is_register_char(x) (register_chars[(unsigned char) x]) |
| 72 | #define is_space_char(x) (space_chars[(unsigned char) x]) |
| 73 | #define is_identifier_char(x) (identifier_chars[(unsigned char) x]) |
| 74 | #define is_digit_char(x) (digit_chars[(unsigned char) x]) |
| 75 | |
| 76 | const pseudo_typeS md_pseudo_table[] = { |
| 77 | {0, 0, 0} |
| 78 | }; |
| 79 | |
| 80 | #undef USE_STDOUT |
| 81 | #define USE_STDOUT 1 |
| 82 | |
| 83 | #ifdef USE_STDARG |
| 84 | |
| 85 | #include <stdarg.h> |
| 86 | |
| 87 | int |
| 88 | debug (const char *string, ...) |
| 89 | { |
| 90 | if (flag_debug) |
| 91 | { |
| 92 | va_list argptr; |
| 93 | char str[100]; |
| 94 | |
| 95 | va_start (argptr, string); |
| 96 | vsprintf (str, string, argptr); |
| 97 | if (str[0] == '\0') |
| 98 | return (0); |
| 99 | va_end (argptr); |
| 100 | fputs (str, USE_STDOUT ? stdout : stderr); |
| 101 | return strlen (str); |
| 102 | } |
| 103 | else |
| 104 | return 0; |
| 105 | } |
| 106 | #else |
| 107 | int |
| 108 | debug (string, va_alist) |
| 109 | const char *string; |
| 110 | va_dcl |
| 111 | { |
| 112 | if (flag_debug) |
| 113 | { |
| 114 | va_list argptr; |
| 115 | char str[100]; |
| 116 | int cnt; |
| 117 | |
| 118 | va_start (argptr, string); |
| 119 | cnt = vsprintf (str, string, argptr); |
| 120 | if (str[0] == NULL) |
| 121 | return (0); |
| 122 | va_end (argptr); |
| 123 | fputs (str, USE_STDOUT ? stdout : stderr); |
| 124 | return (cnt); |
| 125 | } |
| 126 | else |
| 127 | return 0; |
| 128 | } |
| 129 | #endif |
| 130 | |
| 131 | /* hash table for opcode lookup */ |
| 132 | static struct hash_control *op_hash; |
| 133 | /* hash table for parallel opcode lookup */ |
| 134 | static struct hash_control *parop_hash; |
| 135 | /* hash table for register lookup */ |
| 136 | static struct hash_control *reg_hash; |
| 137 | /* hash table for indirect addressing lookup */ |
| 138 | static struct hash_control *ind_hash; |
| 139 | |
| 140 | void |
| 141 | md_begin () |
| 142 | { |
| 143 | const char *hash_err; |
| 144 | debug ("In md_begin()\n"); |
| 145 | op_hash = hash_new (); |
| 146 | { |
| 147 | const template *current_optab = tic30_optab; |
| 148 | for (; current_optab < tic30_optab_end; current_optab++) |
| 149 | { |
| 150 | hash_err = hash_insert (op_hash, current_optab->name, (char *) current_optab); |
| 151 | if (hash_err) |
| 152 | as_fatal ("Internal Error: Can't Hash %s: %s", current_optab->name, hash_err); |
| 153 | } |
| 154 | } |
| 155 | parop_hash = hash_new (); |
| 156 | { |
| 157 | const partemplate *current_parop = tic30_paroptab; |
| 158 | for (; current_parop < tic30_paroptab_end; current_parop++) |
| 159 | { |
| 160 | hash_err = hash_insert (parop_hash, current_parop->name, (char *) current_parop); |
| 161 | if (hash_err) |
| 162 | as_fatal ("Internal Error: Can't Hash %s: %s", current_parop->name, hash_err); |
| 163 | } |
| 164 | } |
| 165 | reg_hash = hash_new (); |
| 166 | { |
| 167 | const reg *current_reg = tic30_regtab; |
| 168 | for (; current_reg < tic30_regtab_end; current_reg++) |
| 169 | { |
| 170 | hash_err = hash_insert (reg_hash, current_reg->name, (char *) current_reg); |
| 171 | if (hash_err) |
| 172 | as_fatal ("Internal Error: Can't Hash %s: %s", current_reg->name, hash_err); |
| 173 | } |
| 174 | } |
| 175 | ind_hash = hash_new (); |
| 176 | { |
| 177 | const ind_addr_type *current_ind = tic30_indaddr_tab; |
| 178 | for (; current_ind < tic30_indaddrtab_end; current_ind++) |
| 179 | { |
| 180 | hash_err = hash_insert (ind_hash, current_ind->syntax, (char *) current_ind); |
| 181 | if (hash_err) |
| 182 | as_fatal ("Internal Error: Can't Hash %s: %s", current_ind->syntax, hash_err); |
| 183 | } |
| 184 | } |
| 185 | /* fill in lexical tables: opcode_chars, operand_chars, space_chars */ |
| 186 | { |
| 187 | register int c; |
| 188 | register char *p; |
| 189 | |
| 190 | for (c = 0; c < 256; c++) |
| 191 | { |
| 192 | if (ISLOWER (c) || ISDIGIT (c)) |
| 193 | { |
| 194 | opcode_chars[c] = c; |
| 195 | register_chars[c] = c; |
| 196 | } |
| 197 | else if (ISUPPER (c)) |
| 198 | { |
| 199 | opcode_chars[c] = TOLOWER (c); |
| 200 | register_chars[c] = opcode_chars[c]; |
| 201 | } |
| 202 | else if (c == ')' || c == '(') |
| 203 | { |
| 204 | register_chars[c] = c; |
| 205 | } |
| 206 | if (ISUPPER (c) || ISLOWER (c) || ISDIGIT (c)) |
| 207 | operand_chars[c] = c; |
| 208 | if (ISDIGIT (c) || c == '-') |
| 209 | digit_chars[c] = c; |
| 210 | if (ISALPHA (c) || c == '_' || c == '.' || ISDIGIT (c)) |
| 211 | identifier_chars[c] = c; |
| 212 | if (c == ' ' || c == '\t') |
| 213 | space_chars[c] = c; |
| 214 | if (c == '_') |
| 215 | opcode_chars[c] = c; |
| 216 | } |
| 217 | for (p = operand_special_chars; *p != '\0'; p++) |
| 218 | operand_chars[(unsigned char) *p] = *p; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | /* Address Mode OR values */ |
| 223 | #define AM_Register 0x00000000 |
| 224 | #define AM_Direct 0x00200000 |
| 225 | #define AM_Indirect 0x00400000 |
| 226 | #define AM_Immediate 0x00600000 |
| 227 | #define AM_NotReq 0xFFFFFFFF |
| 228 | |
| 229 | /* PC Relative OR values */ |
| 230 | #define PC_Register 0x00000000 |
| 231 | #define PC_Relative 0x02000000 |
| 232 | |
| 233 | typedef struct { |
| 234 | unsigned op_type; |
| 235 | struct { |
| 236 | int resolved; |
| 237 | unsigned address; |
| 238 | char *label; |
| 239 | expressionS direct_expr; |
| 240 | } direct; |
| 241 | struct { |
| 242 | unsigned mod; |
| 243 | int ARnum; |
| 244 | unsigned char disp; |
| 245 | } indirect; |
| 246 | struct { |
| 247 | unsigned opcode; |
| 248 | } reg; |
| 249 | struct { |
| 250 | int resolved; |
| 251 | int decimal_found; |
| 252 | float f_number; |
| 253 | int s_number; |
| 254 | unsigned int u_number; |
| 255 | char *label; |
| 256 | expressionS imm_expr; |
| 257 | } immediate; |
| 258 | } operand; |
| 259 | |
| 260 | int tic30_parallel_insn PARAMS ((char *)); |
| 261 | operand *tic30_operand PARAMS ((char *)); |
| 262 | char *tic30_find_parallel_insn PARAMS ((char *, char *)); |
| 263 | |
| 264 | template *opcode; |
| 265 | |
| 266 | struct tic30_insn { |
| 267 | template *tm; /* Template of current instruction */ |
| 268 | unsigned opcode; /* Final opcode */ |
| 269 | int operands; /* Number of given operands */ |
| 270 | /* Type of operand given in instruction */ |
| 271 | operand *operand_type[MAX_OPERANDS]; |
| 272 | unsigned addressing_mode; /* Final addressing mode of instruction */ |
| 273 | }; |
| 274 | |
| 275 | struct tic30_insn insn; |
| 276 | static int found_parallel_insn; |
| 277 | |
| 278 | void |
| 279 | md_assemble (line) |
| 280 | char *line; |
| 281 | { |
| 282 | template *opcode; |
| 283 | char *current_posn; |
| 284 | char *token_start; |
| 285 | char save_char; |
| 286 | int count; |
| 287 | |
| 288 | debug ("In md_assemble() with argument %s\n", line); |
| 289 | memset (&insn, '\0', sizeof (insn)); |
| 290 | if (found_parallel_insn) |
| 291 | { |
| 292 | debug ("Line is second part of parallel instruction\n\n"); |
| 293 | found_parallel_insn = 0; |
| 294 | return; |
| 295 | } |
| 296 | if ((current_posn = tic30_find_parallel_insn (line, input_line_pointer + 1)) == NULL) |
| 297 | current_posn = line; |
| 298 | else |
| 299 | found_parallel_insn = 1; |
| 300 | while (is_space_char (*current_posn)) |
| 301 | current_posn++; |
| 302 | token_start = current_posn; |
| 303 | if (!is_opcode_char (*current_posn)) |
| 304 | { |
| 305 | as_bad ("Invalid character %s in opcode", output_invalid (*current_posn)); |
| 306 | return; |
| 307 | } |
| 308 | /* Check if instruction is a parallel instruction by seeing if the first |
| 309 | character is a q. */ |
| 310 | if (*token_start == 'q') |
| 311 | { |
| 312 | if (tic30_parallel_insn (token_start)) |
| 313 | { |
| 314 | if (found_parallel_insn) |
| 315 | free (token_start); |
| 316 | return; |
| 317 | } |
| 318 | } |
| 319 | while (is_opcode_char (*current_posn)) |
| 320 | current_posn++; |
| 321 | { /* Find instruction */ |
| 322 | save_char = *current_posn; |
| 323 | *current_posn = '\0'; |
| 324 | opcode = (template *) hash_find (op_hash, token_start); |
| 325 | if (opcode) |
| 326 | { |
| 327 | debug ("Found instruction %s\n", opcode->name); |
| 328 | insn.tm = opcode; |
| 329 | } |
| 330 | else |
| 331 | { |
| 332 | debug ("Didn't find insn\n"); |
| 333 | as_bad ("Unknown TMS320C30 instruction: %s", token_start); |
| 334 | return; |
| 335 | } |
| 336 | *current_posn = save_char; |
| 337 | } |
| 338 | if (*current_posn != END_OF_INSN) |
| 339 | { /* Find operands */ |
| 340 | int paren_not_balanced; |
| 341 | int expecting_operand = 0; |
| 342 | int this_operand; |
| 343 | do |
| 344 | { |
| 345 | /* skip optional white space before operand */ |
| 346 | while (!is_operand_char (*current_posn) && *current_posn != END_OF_INSN) |
| 347 | { |
| 348 | if (!is_space_char (*current_posn)) |
| 349 | { |
| 350 | as_bad ("Invalid character %s before %s operand", |
| 351 | output_invalid (*current_posn), |
| 352 | ordinal_names[insn.operands]); |
| 353 | return; |
| 354 | } |
| 355 | current_posn++; |
| 356 | } |
| 357 | token_start = current_posn; /* after white space */ |
| 358 | paren_not_balanced = 0; |
| 359 | while (paren_not_balanced || *current_posn != ',') |
| 360 | { |
| 361 | if (*current_posn == END_OF_INSN) |
| 362 | { |
| 363 | if (paren_not_balanced) |
| 364 | { |
| 365 | as_bad ("Unbalanced parenthesis in %s operand.", |
| 366 | ordinal_names[insn.operands]); |
| 367 | return; |
| 368 | } |
| 369 | else |
| 370 | break; /* we are done */ |
| 371 | } |
| 372 | else if (!is_operand_char (*current_posn) && !is_space_char (*current_posn)) |
| 373 | { |
| 374 | as_bad ("Invalid character %s in %s operand", |
| 375 | output_invalid (*current_posn), |
| 376 | ordinal_names[insn.operands]); |
| 377 | return; |
| 378 | } |
| 379 | if (*current_posn == '(') |
| 380 | ++paren_not_balanced; |
| 381 | if (*current_posn == ')') |
| 382 | --paren_not_balanced; |
| 383 | current_posn++; |
| 384 | } |
| 385 | if (current_posn != token_start) |
| 386 | { /* yes, we've read in another operand */ |
| 387 | this_operand = insn.operands++; |
| 388 | if (insn.operands > MAX_OPERANDS) |
| 389 | { |
| 390 | as_bad ("Spurious operands; (%d operands/instruction max)", |
| 391 | MAX_OPERANDS); |
| 392 | return; |
| 393 | } |
| 394 | /* now parse operand adding info to 'insn' as we go along */ |
| 395 | save_char = *current_posn; |
| 396 | *current_posn = '\0'; |
| 397 | insn.operand_type[this_operand] = tic30_operand (token_start); |
| 398 | *current_posn = save_char; |
| 399 | if (insn.operand_type[this_operand] == NULL) |
| 400 | return; |
| 401 | } |
| 402 | else |
| 403 | { |
| 404 | if (expecting_operand) |
| 405 | { |
| 406 | as_bad ("Expecting operand after ','; got nothing"); |
| 407 | return; |
| 408 | } |
| 409 | if (*current_posn == ',') |
| 410 | { |
| 411 | as_bad ("Expecting operand before ','; got nothing"); |
| 412 | return; |
| 413 | } |
| 414 | } |
| 415 | /* now *current_posn must be either ',' or END_OF_INSN */ |
| 416 | if (*current_posn == ',') |
| 417 | { |
| 418 | if (*++current_posn == END_OF_INSN) |
| 419 | { /* just skip it, if it's \n complain */ |
| 420 | as_bad ("Expecting operand after ','; got nothing"); |
| 421 | return; |
| 422 | } |
| 423 | expecting_operand = 1; |
| 424 | } |
| 425 | } |
| 426 | while (*current_posn != END_OF_INSN); /* until we get end of insn */ |
| 427 | } |
| 428 | debug ("Number of operands found: %d\n", insn.operands); |
| 429 | /* Check that number of operands is correct */ |
| 430 | if (insn.operands != insn.tm->operands) |
| 431 | { |
| 432 | int i; |
| 433 | int numops = insn.tm->operands; |
| 434 | /* If operands are not the same, then see if any of the operands are not |
| 435 | required. Then recheck with number of given operands. If they are still not |
| 436 | the same, then give an error, otherwise carry on. */ |
| 437 | for (i = 0; i < insn.tm->operands; i++) |
| 438 | if (insn.tm->operand_types[i] & NotReq) |
| 439 | numops--; |
| 440 | if (insn.operands != numops) |
| 441 | { |
| 442 | as_bad ("Incorrect number of operands given"); |
| 443 | return; |
| 444 | } |
| 445 | } |
| 446 | insn.addressing_mode = AM_NotReq; |
| 447 | for (count = 0; count < insn.operands; count++) |
| 448 | { |
| 449 | if (insn.operand_type[count]->op_type & insn.tm->operand_types[count]) |
| 450 | { |
| 451 | debug ("Operand %d matches\n", count + 1); |
| 452 | /* If instruction has two operands and has an AddressMode modifier then set |
| 453 | addressing mode type for instruction */ |
| 454 | if (insn.tm->opcode_modifier == AddressMode) |
| 455 | { |
| 456 | int addr_insn = 0; |
| 457 | /* Store instruction uses the second operand for the address mode. */ |
| 458 | if ((insn.tm->operand_types[1] & (Indirect | Direct)) == (Indirect | Direct)) |
| 459 | addr_insn = 1; |
| 460 | if (insn.operand_type[addr_insn]->op_type & (AllReg)) |
| 461 | insn.addressing_mode = AM_Register; |
| 462 | else if (insn.operand_type[addr_insn]->op_type & Direct) |
| 463 | insn.addressing_mode = AM_Direct; |
| 464 | else if (insn.operand_type[addr_insn]->op_type & Indirect) |
| 465 | insn.addressing_mode = AM_Indirect; |
| 466 | else |
| 467 | insn.addressing_mode = AM_Immediate; |
| 468 | } |
| 469 | } |
| 470 | else |
| 471 | { |
| 472 | as_bad ("The %s operand doesn't match", ordinal_names[count]); |
| 473 | return; |
| 474 | } |
| 475 | } |
| 476 | /* Now set the addressing mode for 3 operand instructions. */ |
| 477 | if ((insn.tm->operand_types[0] & op3T1) && (insn.tm->operand_types[1] & op3T2)) |
| 478 | { |
| 479 | /* Set the addressing mode to the values used for 2 operand instructions in the |
| 480 | G addressing field of the opcode. */ |
| 481 | char *p; |
| 482 | switch (insn.operand_type[0]->op_type) |
| 483 | { |
| 484 | case Rn: |
| 485 | case ARn: |
| 486 | case DPReg: |
| 487 | case OtherReg: |
| 488 | if (insn.operand_type[1]->op_type & (AllReg)) |
| 489 | insn.addressing_mode = AM_Register; |
| 490 | else if (insn.operand_type[1]->op_type & Indirect) |
| 491 | insn.addressing_mode = AM_Direct; |
| 492 | else |
| 493 | { |
| 494 | /* Shouldn't make it to this stage */ |
| 495 | as_bad ("Incompatible first and second operands in instruction"); |
| 496 | return; |
| 497 | } |
| 498 | break; |
| 499 | case Indirect: |
| 500 | if (insn.operand_type[1]->op_type & (AllReg)) |
| 501 | insn.addressing_mode = AM_Indirect; |
| 502 | else if (insn.operand_type[1]->op_type & Indirect) |
| 503 | insn.addressing_mode = AM_Immediate; |
| 504 | else |
| 505 | { |
| 506 | /* Shouldn't make it to this stage */ |
| 507 | as_bad ("Incompatible first and second operands in instruction"); |
| 508 | return; |
| 509 | } |
| 510 | break; |
| 511 | } |
| 512 | /* Now make up the opcode for the 3 operand instructions. As in parallel |
| 513 | instructions, there will be no unresolved values, so they can be fully formed |
| 514 | and added to the frag table. */ |
| 515 | insn.opcode = insn.tm->base_opcode; |
| 516 | if (insn.operand_type[0]->op_type & Indirect) |
| 517 | { |
| 518 | insn.opcode |= (insn.operand_type[0]->indirect.ARnum); |
| 519 | insn.opcode |= (insn.operand_type[0]->indirect.mod << 3); |
| 520 | } |
| 521 | else |
| 522 | insn.opcode |= (insn.operand_type[0]->reg.opcode); |
| 523 | if (insn.operand_type[1]->op_type & Indirect) |
| 524 | { |
| 525 | insn.opcode |= (insn.operand_type[1]->indirect.ARnum << 8); |
| 526 | insn.opcode |= (insn.operand_type[1]->indirect.mod << 11); |
| 527 | } |
| 528 | else |
| 529 | insn.opcode |= (insn.operand_type[1]->reg.opcode << 8); |
| 530 | if (insn.operands == 3) |
| 531 | insn.opcode |= (insn.operand_type[2]->reg.opcode << 16); |
| 532 | insn.opcode |= insn.addressing_mode; |
| 533 | p = frag_more (INSN_SIZE); |
| 534 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 535 | } |
| 536 | else |
| 537 | { /* Not a three operand instruction */ |
| 538 | char *p; |
| 539 | int am_insn = -1; |
| 540 | insn.opcode = insn.tm->base_opcode; |
| 541 | /* Create frag for instruction - all instructions are 4 bytes long. */ |
| 542 | p = frag_more (INSN_SIZE); |
| 543 | if ((insn.operands > 0) && (insn.tm->opcode_modifier == AddressMode)) |
| 544 | { |
| 545 | insn.opcode |= insn.addressing_mode; |
| 546 | if (insn.addressing_mode == AM_Indirect) |
| 547 | { |
| 548 | /* Determine which operand gives the addressing mode */ |
| 549 | if (insn.operand_type[0]->op_type & Indirect) |
| 550 | am_insn = 0; |
| 551 | if ((insn.operands > 1) && (insn.operand_type[1]->op_type & Indirect)) |
| 552 | am_insn = 1; |
| 553 | insn.opcode |= (insn.operand_type[am_insn]->indirect.disp); |
| 554 | insn.opcode |= (insn.operand_type[am_insn]->indirect.ARnum << 8); |
| 555 | insn.opcode |= (insn.operand_type[am_insn]->indirect.mod << 11); |
| 556 | if (insn.operands > 1) |
| 557 | insn.opcode |= (insn.operand_type[!am_insn]->reg.opcode << 16); |
| 558 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 559 | } |
| 560 | else if (insn.addressing_mode == AM_Register) |
| 561 | { |
| 562 | insn.opcode |= (insn.operand_type[0]->reg.opcode); |
| 563 | if (insn.operands > 1) |
| 564 | insn.opcode |= (insn.operand_type[1]->reg.opcode << 16); |
| 565 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 566 | } |
| 567 | else if (insn.addressing_mode == AM_Direct) |
| 568 | { |
| 569 | if (insn.operand_type[0]->op_type & Direct) |
| 570 | am_insn = 0; |
| 571 | if ((insn.operands > 1) && (insn.operand_type[1]->op_type & Direct)) |
| 572 | am_insn = 1; |
| 573 | if (insn.operands > 1) |
| 574 | insn.opcode |= (insn.operand_type[!am_insn]->reg.opcode << 16); |
| 575 | if (insn.operand_type[am_insn]->direct.resolved == 1) |
| 576 | { |
| 577 | /* Resolved values can be placed straight into instruction word, and output */ |
| 578 | insn.opcode |= (insn.operand_type[am_insn]->direct.address & 0x0000FFFF); |
| 579 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 580 | } |
| 581 | else |
| 582 | { /* Unresolved direct addressing mode instruction */ |
| 583 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 584 | fix_new_exp (frag_now, p + 2 - (frag_now->fr_literal), 2, &insn.operand_type[am_insn]->direct.direct_expr, 0, 0); |
| 585 | } |
| 586 | } |
| 587 | else if (insn.addressing_mode == AM_Immediate) |
| 588 | { |
| 589 | if (insn.operand_type[0]->immediate.resolved == 1) |
| 590 | { |
| 591 | char *keeploc; |
| 592 | int size; |
| 593 | if (insn.operands > 1) |
| 594 | insn.opcode |= (insn.operand_type[1]->reg.opcode << 16); |
| 595 | switch (insn.tm->imm_arg_type) |
| 596 | { |
| 597 | case Imm_Float: |
| 598 | debug ("Floating point first operand\n"); |
| 599 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 600 | keeploc = input_line_pointer; |
| 601 | input_line_pointer = insn.operand_type[0]->immediate.label; |
| 602 | if (md_atof ('f', p + 2, &size) != 0) |
| 603 | { |
| 604 | as_bad ("invalid short form floating point immediate operand"); |
| 605 | return; |
| 606 | } |
| 607 | input_line_pointer = keeploc; |
| 608 | break; |
| 609 | case Imm_UInt: |
| 610 | debug ("Unsigned int first operand\n"); |
| 611 | if (insn.operand_type[0]->immediate.decimal_found) |
| 612 | as_warn ("rounding down first operand float to unsigned int"); |
| 613 | if (insn.operand_type[0]->immediate.u_number > 0xFFFF) |
| 614 | as_warn ("only lower 16-bits of first operand are used"); |
| 615 | insn.opcode |= (insn.operand_type[0]->immediate.u_number & 0x0000FFFFL); |
| 616 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 617 | break; |
| 618 | case Imm_SInt: |
| 619 | debug ("Int first operand\n"); |
| 620 | if (insn.operand_type[0]->immediate.decimal_found) |
| 621 | as_warn ("rounding down first operand float to signed int"); |
| 622 | if (insn.operand_type[0]->immediate.s_number < -32768 || |
| 623 | insn.operand_type[0]->immediate.s_number > 32767) |
| 624 | { |
| 625 | as_bad ("first operand is too large for 16-bit signed int"); |
| 626 | return; |
| 627 | } |
| 628 | insn.opcode |= (insn.operand_type[0]->immediate.s_number & 0x0000FFFFL); |
| 629 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 630 | break; |
| 631 | } |
| 632 | } |
| 633 | else |
| 634 | { /* Unresolved immediate label */ |
| 635 | if (insn.operands > 1) |
| 636 | insn.opcode |= (insn.operand_type[1]->reg.opcode << 16); |
| 637 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 638 | fix_new_exp (frag_now, p + 2 - (frag_now->fr_literal), 2, &insn.operand_type[0]->immediate.imm_expr, 0, 0); |
| 639 | } |
| 640 | } |
| 641 | } |
| 642 | else if (insn.tm->opcode_modifier == PCRel) |
| 643 | { |
| 644 | /* Conditional Branch and Call instructions */ |
| 645 | if ((insn.tm->operand_types[0] & (AllReg | Disp)) == (AllReg | Disp)) |
| 646 | { |
| 647 | if (insn.operand_type[0]->op_type & (AllReg)) |
| 648 | { |
| 649 | insn.opcode |= (insn.operand_type[0]->reg.opcode); |
| 650 | insn.opcode |= PC_Register; |
| 651 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 652 | } |
| 653 | else |
| 654 | { |
| 655 | insn.opcode |= PC_Relative; |
| 656 | if (insn.operand_type[0]->immediate.resolved == 1) |
| 657 | { |
| 658 | insn.opcode |= (insn.operand_type[0]->immediate.s_number & 0x0000FFFF); |
| 659 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 660 | } |
| 661 | else |
| 662 | { |
| 663 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 664 | fix_new_exp (frag_now, p + 2 - (frag_now->fr_literal), 2, &insn.operand_type[0]->immediate.imm_expr, 1, 0); |
| 665 | } |
| 666 | } |
| 667 | } |
| 668 | else if ((insn.tm->operand_types[0] & ARn) == ARn) |
| 669 | { |
| 670 | /* Decrement and Branch instructions */ |
| 671 | insn.opcode |= ((insn.operand_type[0]->reg.opcode - 0x08) << 22); |
| 672 | if (insn.operand_type[1]->op_type & (AllReg)) |
| 673 | { |
| 674 | insn.opcode |= (insn.operand_type[1]->reg.opcode); |
| 675 | insn.opcode |= PC_Register; |
| 676 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 677 | } |
| 678 | else if (insn.operand_type[1]->immediate.resolved == 1) |
| 679 | { |
| 680 | if (insn.operand_type[0]->immediate.decimal_found) |
| 681 | { |
| 682 | as_bad ("first operand is floating point"); |
| 683 | return; |
| 684 | } |
| 685 | if (insn.operand_type[0]->immediate.s_number < -32768 || |
| 686 | insn.operand_type[0]->immediate.s_number > 32767) |
| 687 | { |
| 688 | as_bad ("first operand is too large for 16-bit signed int"); |
| 689 | return; |
| 690 | } |
| 691 | insn.opcode |= (insn.operand_type[1]->immediate.s_number); |
| 692 | insn.opcode |= PC_Relative; |
| 693 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 694 | } |
| 695 | else |
| 696 | { |
| 697 | insn.opcode |= PC_Relative; |
| 698 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 699 | fix_new_exp (frag_now, p + 2 - frag_now->fr_literal, 2, &insn.operand_type[1]->immediate.imm_expr, 1, 0); |
| 700 | } |
| 701 | } |
| 702 | } |
| 703 | else if (insn.tm->operand_types[0] == IVector) |
| 704 | { |
| 705 | /* Trap instructions */ |
| 706 | if (insn.operand_type[0]->op_type & IVector) |
| 707 | insn.opcode |= (insn.operand_type[0]->immediate.u_number); |
| 708 | else |
| 709 | { /* Shouldn't get here */ |
| 710 | as_bad ("interrupt vector for trap instruction out of range"); |
| 711 | return; |
| 712 | } |
| 713 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 714 | } |
| 715 | else if (insn.tm->opcode_modifier == StackOp || insn.tm->opcode_modifier == Rotate) |
| 716 | { |
| 717 | /* Push, Pop and Rotate instructions */ |
| 718 | insn.opcode |= (insn.operand_type[0]->reg.opcode << 16); |
| 719 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 720 | } |
| 721 | else if ((insn.tm->operand_types[0] & (Abs24 | Direct)) == (Abs24 | Direct)) |
| 722 | { |
| 723 | /* LDP Instruction needs to be tested for before the next section */ |
| 724 | if (insn.operand_type[0]->op_type & Direct) |
| 725 | { |
| 726 | if (insn.operand_type[0]->direct.resolved == 1) |
| 727 | { |
| 728 | /* Direct addressing uses lower 8 bits of direct address */ |
| 729 | insn.opcode |= (insn.operand_type[0]->direct.address & 0x00FF0000) >> 16; |
| 730 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 731 | } |
| 732 | else |
| 733 | { |
| 734 | fixS *fix; |
| 735 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 736 | fix = fix_new_exp (frag_now, p + 3 - (frag_now->fr_literal), 1, &insn.operand_type[0]->direct.direct_expr, 0, 0); |
| 737 | /* Ensure that the assembler doesn't complain about fitting a 24-bit |
| 738 | address into 8 bits. */ |
| 739 | fix->fx_no_overflow = 1; |
| 740 | } |
| 741 | } |
| 742 | else |
| 743 | { |
| 744 | if (insn.operand_type[0]->immediate.resolved == 1) |
| 745 | { |
| 746 | /* Immediate addressing uses upper 8 bits of address */ |
| 747 | if (insn.operand_type[0]->immediate.u_number > 0x00FFFFFF) |
| 748 | { |
| 749 | as_bad ("LDP instruction needs a 24-bit operand"); |
| 750 | return; |
| 751 | } |
| 752 | insn.opcode |= ((insn.operand_type[0]->immediate.u_number & 0x00FF0000) >> 16); |
| 753 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 754 | } |
| 755 | else |
| 756 | { |
| 757 | fixS *fix; |
| 758 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 759 | fix = fix_new_exp (frag_now, p + 3 - (frag_now->fr_literal), 1, &insn.operand_type[0]->immediate.imm_expr, 0, 0); |
| 760 | fix->fx_no_overflow = 1; |
| 761 | } |
| 762 | } |
| 763 | } |
| 764 | else if (insn.tm->operand_types[0] & (Imm24)) |
| 765 | { |
| 766 | /* Unconditional Branch and Call instructions */ |
| 767 | if (insn.operand_type[0]->immediate.resolved == 1) |
| 768 | { |
| 769 | if (insn.operand_type[0]->immediate.u_number > 0x00FFFFFF) |
| 770 | as_warn ("first operand is too large for a 24-bit displacement"); |
| 771 | insn.opcode |= (insn.operand_type[0]->immediate.u_number & 0x00FFFFFF); |
| 772 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 773 | } |
| 774 | else |
| 775 | { |
| 776 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 777 | fix_new_exp (frag_now, p + 1 - (frag_now->fr_literal), 3, &insn.operand_type[0]->immediate.imm_expr, 0, 0); |
| 778 | } |
| 779 | } |
| 780 | else if (insn.tm->operand_types[0] & NotReq) |
| 781 | { |
| 782 | /* Check for NOP instruction without arguments. */ |
| 783 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 784 | } |
| 785 | else if (insn.tm->operands == 0) |
| 786 | { |
| 787 | /* Check for instructions without operands. */ |
| 788 | md_number_to_chars (p, (valueT) insn.opcode, INSN_SIZE); |
| 789 | } |
| 790 | } |
| 791 | debug ("Addressing mode: %08X\n", insn.addressing_mode); |
| 792 | { |
| 793 | int i; |
| 794 | for (i = 0; i < insn.operands; i++) |
| 795 | { |
| 796 | if (insn.operand_type[i]->immediate.label) |
| 797 | free (insn.operand_type[i]->immediate.label); |
| 798 | free (insn.operand_type[i]); |
| 799 | } |
| 800 | } |
| 801 | debug ("Final opcode: %08X\n", insn.opcode); |
| 802 | debug ("\n"); |
| 803 | } |
| 804 | |
| 805 | struct tic30_par_insn { |
| 806 | partemplate *tm; /* Template of current parallel instruction */ |
| 807 | int operands[2]; /* Number of given operands for each insn */ |
| 808 | /* Type of operand given in instruction */ |
| 809 | operand *operand_type[2][MAX_OPERANDS]; |
| 810 | int swap_operands; /* Whether to swap operands around. */ |
| 811 | unsigned p_field; /* Value of p field in multiply add/sub instructions */ |
| 812 | unsigned opcode; /* Final opcode */ |
| 813 | }; |
| 814 | |
| 815 | struct tic30_par_insn p_insn; |
| 816 | |
| 817 | int |
| 818 | tic30_parallel_insn (char *token) |
| 819 | { |
| 820 | static partemplate *p_opcode; |
| 821 | char *current_posn = token; |
| 822 | char *token_start; |
| 823 | char save_char; |
| 824 | |
| 825 | debug ("In tic30_parallel_insn with %s\n", token); |
| 826 | memset (&p_insn, '\0', sizeof (p_insn)); |
| 827 | while (is_opcode_char (*current_posn)) |
| 828 | current_posn++; |
| 829 | { /* Find instruction */ |
| 830 | save_char = *current_posn; |
| 831 | *current_posn = '\0'; |
| 832 | p_opcode = (partemplate *) hash_find (parop_hash, token); |
| 833 | if (p_opcode) |
| 834 | { |
| 835 | debug ("Found instruction %s\n", p_opcode->name); |
| 836 | p_insn.tm = p_opcode; |
| 837 | } |
| 838 | else |
| 839 | { |
| 840 | char first_opcode[6] = |
| 841 | {0}; |
| 842 | char second_opcode[6] = |
| 843 | {0}; |
| 844 | int i; |
| 845 | int current_opcode = -1; |
| 846 | int char_ptr = 0; |
| 847 | |
| 848 | for (i = 0; i < strlen (token); i++) |
| 849 | { |
| 850 | char ch = *(token + i); |
| 851 | if (ch == '_' && current_opcode == -1) |
| 852 | { |
| 853 | current_opcode = 0; |
| 854 | continue; |
| 855 | } |
| 856 | if (ch == '_' && current_opcode == 0) |
| 857 | { |
| 858 | current_opcode = 1; |
| 859 | char_ptr = 0; |
| 860 | continue; |
| 861 | } |
| 862 | switch (current_opcode) |
| 863 | { |
| 864 | case 0: |
| 865 | first_opcode[char_ptr++] = ch; |
| 866 | break; |
| 867 | case 1: |
| 868 | second_opcode[char_ptr++] = ch; |
| 869 | break; |
| 870 | } |
| 871 | } |
| 872 | debug ("first_opcode = %s\n", first_opcode); |
| 873 | debug ("second_opcode = %s\n", second_opcode); |
| 874 | sprintf (token, "q_%s_%s", second_opcode, first_opcode); |
| 875 | p_opcode = (partemplate *) hash_find (parop_hash, token); |
| 876 | if (p_opcode) |
| 877 | { |
| 878 | debug ("Found instruction %s\n", p_opcode->name); |
| 879 | p_insn.tm = p_opcode; |
| 880 | p_insn.swap_operands = 1; |
| 881 | } |
| 882 | else |
| 883 | return 0; |
| 884 | } |
| 885 | *current_posn = save_char; |
| 886 | } |
| 887 | { /* Find operands */ |
| 888 | int paren_not_balanced; |
| 889 | int expecting_operand = 0; |
| 890 | int found_separator = 0; |
| 891 | do |
| 892 | { |
| 893 | /* skip optional white space before operand */ |
| 894 | while (!is_operand_char (*current_posn) && *current_posn != END_OF_INSN) |
| 895 | { |
| 896 | if (!is_space_char (*current_posn) && *current_posn != PARALLEL_SEPARATOR) |
| 897 | { |
| 898 | as_bad ("Invalid character %s before %s operand", |
| 899 | output_invalid (*current_posn), |
| 900 | ordinal_names[insn.operands]); |
| 901 | return 1; |
| 902 | } |
| 903 | if (*current_posn == PARALLEL_SEPARATOR) |
| 904 | found_separator = 1; |
| 905 | current_posn++; |
| 906 | } |
| 907 | token_start = current_posn; /* after white space */ |
| 908 | paren_not_balanced = 0; |
| 909 | while (paren_not_balanced || *current_posn != ',') |
| 910 | { |
| 911 | if (*current_posn == END_OF_INSN) |
| 912 | { |
| 913 | if (paren_not_balanced) |
| 914 | { |
| 915 | as_bad ("Unbalanced parenthesis in %s operand.", |
| 916 | ordinal_names[insn.operands]); |
| 917 | return 1; |
| 918 | } |
| 919 | else |
| 920 | break; /* we are done */ |
| 921 | } |
| 922 | else if (*current_posn == PARALLEL_SEPARATOR) |
| 923 | { |
| 924 | while (is_space_char (*(current_posn - 1))) |
| 925 | current_posn--; |
| 926 | break; |
| 927 | } |
| 928 | else if (!is_operand_char (*current_posn) && !is_space_char (*current_posn)) |
| 929 | { |
| 930 | as_bad ("Invalid character %s in %s operand", |
| 931 | output_invalid (*current_posn), |
| 932 | ordinal_names[insn.operands]); |
| 933 | return 1; |
| 934 | } |
| 935 | if (*current_posn == '(') |
| 936 | ++paren_not_balanced; |
| 937 | if (*current_posn == ')') |
| 938 | --paren_not_balanced; |
| 939 | current_posn++; |
| 940 | } |
| 941 | if (current_posn != token_start) |
| 942 | { /* yes, we've read in another operand */ |
| 943 | p_insn.operands[found_separator]++; |
| 944 | if (p_insn.operands[found_separator] > MAX_OPERANDS) |
| 945 | { |
| 946 | as_bad ("Spurious operands; (%d operands/instruction max)", |
| 947 | MAX_OPERANDS); |
| 948 | return 1; |
| 949 | } |
| 950 | /* now parse operand adding info to 'insn' as we go along */ |
| 951 | save_char = *current_posn; |
| 952 | *current_posn = '\0'; |
| 953 | p_insn.operand_type[found_separator][p_insn.operands[found_separator] - 1] = |
| 954 | tic30_operand (token_start); |
| 955 | *current_posn = save_char; |
| 956 | if (!p_insn.operand_type[found_separator][p_insn.operands[found_separator] - 1]) |
| 957 | return 1; |
| 958 | } |
| 959 | else |
| 960 | { |
| 961 | if (expecting_operand) |
| 962 | { |
| 963 | as_bad ("Expecting operand after ','; got nothing"); |
| 964 | return 1; |
| 965 | } |
| 966 | if (*current_posn == ',') |
| 967 | { |
| 968 | as_bad ("Expecting operand before ','; got nothing"); |
| 969 | return 1; |
| 970 | } |
| 971 | } |
| 972 | /* now *current_posn must be either ',' or END_OF_INSN */ |
| 973 | if (*current_posn == ',') |
| 974 | { |
| 975 | if (*++current_posn == END_OF_INSN) |
| 976 | { /* just skip it, if it's \n complain */ |
| 977 | as_bad ("Expecting operand after ','; got nothing"); |
| 978 | return 1; |
| 979 | } |
| 980 | expecting_operand = 1; |
| 981 | } |
| 982 | } |
| 983 | while (*current_posn != END_OF_INSN); /* until we get end of insn */ |
| 984 | } |
| 985 | if (p_insn.swap_operands) |
| 986 | { |
| 987 | int temp_num, i; |
| 988 | operand *temp_op; |
| 989 | |
| 990 | temp_num = p_insn.operands[0]; |
| 991 | p_insn.operands[0] = p_insn.operands[1]; |
| 992 | p_insn.operands[1] = temp_num; |
| 993 | for (i = 0; i < MAX_OPERANDS; i++) |
| 994 | { |
| 995 | temp_op = p_insn.operand_type[0][i]; |
| 996 | p_insn.operand_type[0][i] = p_insn.operand_type[1][i]; |
| 997 | p_insn.operand_type[1][i] = temp_op; |
| 998 | } |
| 999 | } |
| 1000 | if (p_insn.operands[0] != p_insn.tm->operands_1) |
| 1001 | { |
| 1002 | as_bad ("incorrect number of operands given in the first instruction"); |
| 1003 | return 1; |
| 1004 | } |
| 1005 | if (p_insn.operands[1] != p_insn.tm->operands_2) |
| 1006 | { |
| 1007 | as_bad ("incorrect number of operands given in the second instruction"); |
| 1008 | return 1; |
| 1009 | } |
| 1010 | debug ("Number of operands in first insn: %d\n", p_insn.operands[0]); |
| 1011 | debug ("Number of operands in second insn: %d\n", p_insn.operands[1]); |
| 1012 | { /* Now check if operands are correct */ |
| 1013 | int count; |
| 1014 | int num_rn = 0; |
| 1015 | int num_ind = 0; |
| 1016 | for (count = 0; count < 2; count++) |
| 1017 | { |
| 1018 | int i; |
| 1019 | for (i = 0; i < p_insn.operands[count]; i++) |
| 1020 | { |
| 1021 | if ((p_insn.operand_type[count][i]->op_type & |
| 1022 | p_insn.tm->operand_types[count][i]) == 0) |
| 1023 | { |
| 1024 | as_bad ("%s instruction, operand %d doesn't match", ordinal_names[count], i + 1); |
| 1025 | return 1; |
| 1026 | } |
| 1027 | /* Get number of R register and indirect reference contained within the first |
| 1028 | two operands of each instruction. This is required for the multiply |
| 1029 | parallel instructions which require two R registers and two indirect |
| 1030 | references, but not in any particular place. */ |
| 1031 | if ((p_insn.operand_type[count][i]->op_type & Rn) && i < 2) |
| 1032 | num_rn++; |
| 1033 | else if ((p_insn.operand_type[count][i]->op_type & Indirect) && i < 2) |
| 1034 | num_ind++; |
| 1035 | } |
| 1036 | } |
| 1037 | if ((p_insn.tm->operand_types[0][0] & (Indirect | Rn)) == (Indirect | Rn)) |
| 1038 | { |
| 1039 | /* Check for the multiply instructions */ |
| 1040 | if (num_rn != 2) |
| 1041 | { |
| 1042 | as_bad ("incorrect format for multiply parallel instruction"); |
| 1043 | return 1; |
| 1044 | } |
| 1045 | if (num_ind != 2) |
| 1046 | { /* Shouldn't get here */ |
| 1047 | as_bad ("incorrect format for multiply parallel instruction"); |
| 1048 | return 1; |
| 1049 | } |
| 1050 | if ((p_insn.operand_type[0][2]->reg.opcode != 0x00) && |
| 1051 | (p_insn.operand_type[0][2]->reg.opcode != 0x01)) |
| 1052 | { |
| 1053 | as_bad ("destination for multiply can only be R0 or R1"); |
| 1054 | return 1; |
| 1055 | } |
| 1056 | if ((p_insn.operand_type[1][2]->reg.opcode != 0x02) && |
| 1057 | (p_insn.operand_type[1][2]->reg.opcode != 0x03)) |
| 1058 | { |
| 1059 | as_bad ("destination for add/subtract can only be R2 or R3"); |
| 1060 | return 1; |
| 1061 | } |
| 1062 | /* Now determine the P field for the instruction */ |
| 1063 | if (p_insn.operand_type[0][0]->op_type & Indirect) |
| 1064 | { |
| 1065 | if (p_insn.operand_type[0][1]->op_type & Indirect) |
| 1066 | p_insn.p_field = 0x00000000; /* Ind * Ind, Rn +/- Rn */ |
| 1067 | else if (p_insn.operand_type[1][0]->op_type & Indirect) |
| 1068 | p_insn.p_field = 0x01000000; /* Ind * Rn, Ind +/- Rn */ |
| 1069 | else |
| 1070 | p_insn.p_field = 0x03000000; /* Ind * Rn, Rn +/- Ind */ |
| 1071 | } |
| 1072 | else |
| 1073 | { |
| 1074 | if (p_insn.operand_type[0][1]->op_type & Rn) |
| 1075 | p_insn.p_field = 0x02000000; /* Rn * Rn, Ind +/- Ind */ |
| 1076 | else if (p_insn.operand_type[1][0]->op_type & Indirect) |
| 1077 | { |
| 1078 | operand *temp; |
| 1079 | p_insn.p_field = 0x01000000; /* Rn * Ind, Ind +/- Rn */ |
| 1080 | /* Need to swap the two multiply operands around so that everything is in |
| 1081 | its place for the opcode makeup ie so Ind * Rn, Ind +/- Rn */ |
| 1082 | temp = p_insn.operand_type[0][0]; |
| 1083 | p_insn.operand_type[0][0] = p_insn.operand_type[0][1]; |
| 1084 | p_insn.operand_type[0][1] = temp; |
| 1085 | } |
| 1086 | else |
| 1087 | { |
| 1088 | operand *temp; |
| 1089 | p_insn.p_field = 0x03000000; /* Rn * Ind, Rn +/- Ind */ |
| 1090 | temp = p_insn.operand_type[0][0]; |
| 1091 | p_insn.operand_type[0][0] = p_insn.operand_type[0][1]; |
| 1092 | p_insn.operand_type[0][1] = temp; |
| 1093 | } |
| 1094 | } |
| 1095 | } |
| 1096 | } |
| 1097 | debug ("P field: %08X\n", p_insn.p_field); |
| 1098 | /* Finalise opcode. This is easier for parallel instructions as they have to be |
| 1099 | fully resolved, there are no memory addresses allowed, except through indirect |
| 1100 | addressing, so there are no labels to resolve. */ |
| 1101 | { |
| 1102 | p_insn.opcode = p_insn.tm->base_opcode; |
| 1103 | switch (p_insn.tm->oporder) |
| 1104 | { |
| 1105 | case OO_4op1: |
| 1106 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.ARnum); |
| 1107 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.mod << 3); |
| 1108 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.ARnum << 8); |
| 1109 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.mod << 11); |
| 1110 | p_insn.opcode |= (p_insn.operand_type[1][0]->reg.opcode << 16); |
| 1111 | p_insn.opcode |= (p_insn.operand_type[0][1]->reg.opcode << 22); |
| 1112 | break; |
| 1113 | case OO_4op2: |
| 1114 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.ARnum); |
| 1115 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.mod << 3); |
| 1116 | p_insn.opcode |= (p_insn.operand_type[1][0]->indirect.ARnum << 8); |
| 1117 | p_insn.opcode |= (p_insn.operand_type[1][0]->indirect.mod << 11); |
| 1118 | p_insn.opcode |= (p_insn.operand_type[1][1]->reg.opcode << 19); |
| 1119 | p_insn.opcode |= (p_insn.operand_type[0][1]->reg.opcode << 22); |
| 1120 | if (p_insn.operand_type[1][1]->reg.opcode == p_insn.operand_type[0][1]->reg.opcode) |
| 1121 | as_warn ("loading the same register in parallel operation"); |
| 1122 | break; |
| 1123 | case OO_4op3: |
| 1124 | p_insn.opcode |= (p_insn.operand_type[0][1]->indirect.ARnum); |
| 1125 | p_insn.opcode |= (p_insn.operand_type[0][1]->indirect.mod << 3); |
| 1126 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.ARnum << 8); |
| 1127 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.mod << 11); |
| 1128 | p_insn.opcode |= (p_insn.operand_type[1][0]->reg.opcode << 16); |
| 1129 | p_insn.opcode |= (p_insn.operand_type[0][0]->reg.opcode << 22); |
| 1130 | break; |
| 1131 | case OO_5op1: |
| 1132 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.ARnum); |
| 1133 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.mod << 3); |
| 1134 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.ARnum << 8); |
| 1135 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.mod << 11); |
| 1136 | p_insn.opcode |= (p_insn.operand_type[1][0]->reg.opcode << 16); |
| 1137 | p_insn.opcode |= (p_insn.operand_type[0][1]->reg.opcode << 19); |
| 1138 | p_insn.opcode |= (p_insn.operand_type[0][2]->reg.opcode << 22); |
| 1139 | break; |
| 1140 | case OO_5op2: |
| 1141 | p_insn.opcode |= (p_insn.operand_type[0][1]->indirect.ARnum); |
| 1142 | p_insn.opcode |= (p_insn.operand_type[0][1]->indirect.mod << 3); |
| 1143 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.ARnum << 8); |
| 1144 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.mod << 11); |
| 1145 | p_insn.opcode |= (p_insn.operand_type[1][0]->reg.opcode << 16); |
| 1146 | p_insn.opcode |= (p_insn.operand_type[0][0]->reg.opcode << 19); |
| 1147 | p_insn.opcode |= (p_insn.operand_type[0][2]->reg.opcode << 22); |
| 1148 | break; |
| 1149 | case OO_PField: |
| 1150 | p_insn.opcode |= p_insn.p_field; |
| 1151 | if (p_insn.operand_type[0][2]->reg.opcode == 0x01) |
| 1152 | p_insn.opcode |= 0x00800000; |
| 1153 | if (p_insn.operand_type[1][2]->reg.opcode == 0x03) |
| 1154 | p_insn.opcode |= 0x00400000; |
| 1155 | switch (p_insn.p_field) |
| 1156 | { |
| 1157 | case 0x00000000: |
| 1158 | p_insn.opcode |= (p_insn.operand_type[0][1]->indirect.ARnum); |
| 1159 | p_insn.opcode |= (p_insn.operand_type[0][1]->indirect.mod << 3); |
| 1160 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.ARnum << 8); |
| 1161 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.mod << 11); |
| 1162 | p_insn.opcode |= (p_insn.operand_type[1][1]->reg.opcode << 16); |
| 1163 | p_insn.opcode |= (p_insn.operand_type[1][0]->reg.opcode << 19); |
| 1164 | break; |
| 1165 | case 0x01000000: |
| 1166 | p_insn.opcode |= (p_insn.operand_type[1][0]->indirect.ARnum); |
| 1167 | p_insn.opcode |= (p_insn.operand_type[1][0]->indirect.mod << 3); |
| 1168 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.ARnum << 8); |
| 1169 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.mod << 11); |
| 1170 | p_insn.opcode |= (p_insn.operand_type[1][1]->reg.opcode << 16); |
| 1171 | p_insn.opcode |= (p_insn.operand_type[0][1]->reg.opcode << 19); |
| 1172 | break; |
| 1173 | case 0x02000000: |
| 1174 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.ARnum); |
| 1175 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.mod << 3); |
| 1176 | p_insn.opcode |= (p_insn.operand_type[1][0]->indirect.ARnum << 8); |
| 1177 | p_insn.opcode |= (p_insn.operand_type[1][0]->indirect.mod << 11); |
| 1178 | p_insn.opcode |= (p_insn.operand_type[0][1]->reg.opcode << 16); |
| 1179 | p_insn.opcode |= (p_insn.operand_type[0][0]->reg.opcode << 19); |
| 1180 | break; |
| 1181 | case 0x03000000: |
| 1182 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.ARnum); |
| 1183 | p_insn.opcode |= (p_insn.operand_type[1][1]->indirect.mod << 3); |
| 1184 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.ARnum << 8); |
| 1185 | p_insn.opcode |= (p_insn.operand_type[0][0]->indirect.mod << 11); |
| 1186 | p_insn.opcode |= (p_insn.operand_type[1][0]->reg.opcode << 16); |
| 1187 | p_insn.opcode |= (p_insn.operand_type[0][1]->reg.opcode << 19); |
| 1188 | break; |
| 1189 | } |
| 1190 | break; |
| 1191 | } |
| 1192 | } /* Opcode is finalised at this point for all parallel instructions. */ |
| 1193 | { /* Output opcode */ |
| 1194 | char *p; |
| 1195 | p = frag_more (INSN_SIZE); |
| 1196 | md_number_to_chars (p, (valueT) p_insn.opcode, INSN_SIZE); |
| 1197 | } |
| 1198 | { |
| 1199 | int i, j; |
| 1200 | for (i = 0; i < 2; i++) |
| 1201 | for (j = 0; j < p_insn.operands[i]; j++) |
| 1202 | free (p_insn.operand_type[i][j]); |
| 1203 | } |
| 1204 | debug ("Final opcode: %08X\n", p_insn.opcode); |
| 1205 | debug ("\n"); |
| 1206 | return 1; |
| 1207 | } |
| 1208 | |
| 1209 | operand * |
| 1210 | tic30_operand (token) |
| 1211 | char *token; |
| 1212 | { |
| 1213 | int count; |
| 1214 | char ind_buffer[strlen (token)]; |
| 1215 | operand *current_op; |
| 1216 | |
| 1217 | debug ("In tic30_operand with %s\n", token); |
| 1218 | current_op = (operand *) malloc (sizeof (operand)); |
| 1219 | memset (current_op, '\0', sizeof (operand)); |
| 1220 | if (*token == DIRECT_REFERENCE) |
| 1221 | { |
| 1222 | char *token_posn = token + 1; |
| 1223 | int direct_label = 0; |
| 1224 | debug ("Found direct reference\n"); |
| 1225 | while (*token_posn) |
| 1226 | { |
| 1227 | if (!is_digit_char (*token_posn)) |
| 1228 | direct_label = 1; |
| 1229 | token_posn++; |
| 1230 | } |
| 1231 | if (direct_label) |
| 1232 | { |
| 1233 | char *save_input_line_pointer; |
| 1234 | segT retval; |
| 1235 | debug ("Direct reference is a label\n"); |
| 1236 | current_op->direct.label = token + 1; |
| 1237 | save_input_line_pointer = input_line_pointer; |
| 1238 | input_line_pointer = token + 1; |
| 1239 | debug ("Current input_line_pointer: %s\n", input_line_pointer); |
| 1240 | retval = expression (¤t_op->direct.direct_expr); |
| 1241 | debug ("Expression type: %d\n", current_op->direct.direct_expr.X_op); |
| 1242 | debug ("Expression addnum: %d\n", current_op->direct.direct_expr.X_add_number); |
| 1243 | debug ("Segment: %d\n", retval); |
| 1244 | input_line_pointer = save_input_line_pointer; |
| 1245 | if (current_op->direct.direct_expr.X_op == O_constant) |
| 1246 | { |
| 1247 | current_op->direct.address = current_op->direct.direct_expr.X_add_number; |
| 1248 | current_op->direct.resolved = 1; |
| 1249 | } |
| 1250 | } |
| 1251 | else |
| 1252 | { |
| 1253 | debug ("Direct reference is a number\n"); |
| 1254 | current_op->direct.address = atoi (token + 1); |
| 1255 | current_op->direct.resolved = 1; |
| 1256 | } |
| 1257 | current_op->op_type = Direct; |
| 1258 | } |
| 1259 | else if (*token == INDIRECT_REFERENCE) |
| 1260 | { /* Indirect reference operand */ |
| 1261 | int found_ar = 0; |
| 1262 | int found_disp = 0; |
| 1263 | int ar_number = -1; |
| 1264 | int disp_number = 0; |
| 1265 | int buffer_posn = 1; |
| 1266 | ind_addr_type *ind_addr_op; |
| 1267 | debug ("Found indirect reference\n"); |
| 1268 | ind_buffer[0] = *token; |
| 1269 | for (count = 1; count < strlen (token); count++) |
| 1270 | { /* Strip operand */ |
| 1271 | ind_buffer[buffer_posn] = TOLOWER (*(token + count)); |
| 1272 | if ((*(token + count - 1) == 'a' || *(token + count - 1) == 'A') && |
| 1273 | (*(token + count) == 'r' || *(token + count) == 'R')) |
| 1274 | { |
| 1275 | /* AR reference is found, so get its number and remove it from the buffer |
| 1276 | so it can pass through hash_find() */ |
| 1277 | if (found_ar) |
| 1278 | { |
| 1279 | as_bad ("More than one AR register found in indirect reference"); |
| 1280 | return NULL; |
| 1281 | } |
| 1282 | if (*(token + count + 1) < '0' || *(token + count + 1) > '7') |
| 1283 | { |
| 1284 | as_bad ("Illegal AR register in indirect reference"); |
| 1285 | return NULL; |
| 1286 | } |
| 1287 | ar_number = *(token + count + 1) - '0'; |
| 1288 | found_ar = 1; |
| 1289 | count++; |
| 1290 | } |
| 1291 | if (*(token + count) == '(') |
| 1292 | { |
| 1293 | /* Parenthesis found, so check if a displacement value is inside. If so, get |
| 1294 | the value and remove it from the buffer. */ |
| 1295 | if (is_digit_char (*(token + count + 1))) |
| 1296 | { |
| 1297 | char disp[10]; |
| 1298 | int disp_posn = 0; |
| 1299 | |
| 1300 | if (found_disp) |
| 1301 | { |
| 1302 | as_bad ("More than one displacement found in indirect reference"); |
| 1303 | return NULL; |
| 1304 | } |
| 1305 | count++; |
| 1306 | while (*(token + count) != ')') |
| 1307 | { |
| 1308 | if (!is_digit_char (*(token + count))) |
| 1309 | { |
| 1310 | as_bad ("Invalid displacement in indirect reference"); |
| 1311 | return NULL; |
| 1312 | } |
| 1313 | disp[disp_posn++] = *(token + (count++)); |
| 1314 | } |
| 1315 | disp[disp_posn] = '\0'; |
| 1316 | disp_number = atoi (disp); |
| 1317 | count--; |
| 1318 | found_disp = 1; |
| 1319 | } |
| 1320 | } |
| 1321 | buffer_posn++; |
| 1322 | } |
| 1323 | ind_buffer[buffer_posn] = '\0'; |
| 1324 | if (!found_ar) |
| 1325 | { |
| 1326 | as_bad ("AR register not found in indirect reference"); |
| 1327 | return NULL; |
| 1328 | } |
| 1329 | ind_addr_op = (ind_addr_type *) hash_find (ind_hash, ind_buffer); |
| 1330 | if (ind_addr_op) |
| 1331 | { |
| 1332 | debug ("Found indirect reference: %s\n", ind_addr_op->syntax); |
| 1333 | if (ind_addr_op->displacement == IMPLIED_DISP) |
| 1334 | { |
| 1335 | found_disp = 1; |
| 1336 | disp_number = 1; |
| 1337 | } |
| 1338 | else if ((ind_addr_op->displacement == DISP_REQUIRED) && !found_disp) |
| 1339 | { |
| 1340 | /* Maybe an implied displacement of 1 again */ |
| 1341 | as_bad ("required displacement wasn't given in indirect reference"); |
| 1342 | return 0; |
| 1343 | } |
| 1344 | } |
| 1345 | else |
| 1346 | { |
| 1347 | as_bad ("illegal indirect reference"); |
| 1348 | return NULL; |
| 1349 | } |
| 1350 | if (found_disp && (disp_number < 0 || disp_number > 255)) |
| 1351 | { |
| 1352 | as_bad ("displacement must be an unsigned 8-bit number"); |
| 1353 | return NULL; |
| 1354 | } |
| 1355 | current_op->indirect.mod = ind_addr_op->modfield; |
| 1356 | current_op->indirect.disp = disp_number; |
| 1357 | current_op->indirect.ARnum = ar_number; |
| 1358 | current_op->op_type = Indirect; |
| 1359 | } |
| 1360 | else |
| 1361 | { |
| 1362 | reg *regop = (reg *) hash_find (reg_hash, token); |
| 1363 | if (regop) |
| 1364 | { |
| 1365 | debug ("Found register operand: %s\n", regop->name); |
| 1366 | if (regop->regtype == REG_ARn) |
| 1367 | current_op->op_type = ARn; |
| 1368 | else if (regop->regtype == REG_Rn) |
| 1369 | current_op->op_type = Rn; |
| 1370 | else if (regop->regtype == REG_DP) |
| 1371 | current_op->op_type = DPReg; |
| 1372 | else |
| 1373 | current_op->op_type = OtherReg; |
| 1374 | current_op->reg.opcode = regop->opcode; |
| 1375 | } |
| 1376 | else |
| 1377 | { |
| 1378 | if (!is_digit_char (*token) || *(token + 1) == 'x' || strchr (token, 'h')) |
| 1379 | { |
| 1380 | char *save_input_line_pointer; |
| 1381 | segT retval; |
| 1382 | debug ("Probably a label: %s\n", token); |
| 1383 | current_op->immediate.label = (char *) malloc (strlen (token) + 1); |
| 1384 | strcpy (current_op->immediate.label, token); |
| 1385 | current_op->immediate.label[strlen (token)] = '\0'; |
| 1386 | save_input_line_pointer = input_line_pointer; |
| 1387 | input_line_pointer = token; |
| 1388 | debug ("Current input_line_pointer: %s\n", input_line_pointer); |
| 1389 | retval = expression (¤t_op->immediate.imm_expr); |
| 1390 | debug ("Expression type: %d\n", current_op->immediate.imm_expr.X_op); |
| 1391 | debug ("Expression addnum: %d\n", current_op->immediate.imm_expr.X_add_number); |
| 1392 | debug ("Segment: %d\n", retval); |
| 1393 | input_line_pointer = save_input_line_pointer; |
| 1394 | if (current_op->immediate.imm_expr.X_op == O_constant) |
| 1395 | { |
| 1396 | current_op->immediate.s_number = current_op->immediate.imm_expr.X_add_number; |
| 1397 | current_op->immediate.u_number = (unsigned int) current_op->immediate.imm_expr.X_add_number; |
| 1398 | current_op->immediate.resolved = 1; |
| 1399 | } |
| 1400 | } |
| 1401 | else |
| 1402 | { |
| 1403 | unsigned count; |
| 1404 | debug ("Found a number or displacement\n"); |
| 1405 | for (count = 0; count < strlen (token); count++) |
| 1406 | if (*(token + count) == '.') |
| 1407 | current_op->immediate.decimal_found = 1; |
| 1408 | current_op->immediate.label = (char *) malloc (strlen (token) + 1); |
| 1409 | strcpy (current_op->immediate.label, token); |
| 1410 | current_op->immediate.label[strlen (token)] = '\0'; |
| 1411 | current_op->immediate.f_number = (float) atof (token); |
| 1412 | current_op->immediate.s_number = (int) atoi (token); |
| 1413 | current_op->immediate.u_number = (unsigned int) atoi (token); |
| 1414 | current_op->immediate.resolved = 1; |
| 1415 | } |
| 1416 | current_op->op_type = Disp | Abs24 | Imm16 | Imm24; |
| 1417 | if (current_op->immediate.u_number >= 0 && current_op->immediate.u_number <= 31) |
| 1418 | current_op->op_type |= IVector; |
| 1419 | } |
| 1420 | } |
| 1421 | return current_op; |
| 1422 | } |
| 1423 | |
| 1424 | /* next_line points to the next line after the current instruction (current_line). |
| 1425 | Search for the parallel bars, and if found, merge two lines into internal syntax |
| 1426 | for a parallel instruction: |
| 1427 | q_[INSN1]_[INSN2] [OPERANDS1] | [OPERANDS2] |
| 1428 | By this stage, all comments are scrubbed, and only the bare lines are given. |
| 1429 | */ |
| 1430 | |
| 1431 | #define NONE 0 |
| 1432 | #define START_OPCODE 1 |
| 1433 | #define END_OPCODE 2 |
| 1434 | #define START_OPERANDS 3 |
| 1435 | #define END_OPERANDS 4 |
| 1436 | |
| 1437 | char * |
| 1438 | tic30_find_parallel_insn (current_line, next_line) |
| 1439 | char *current_line; |
| 1440 | char *next_line; |
| 1441 | { |
| 1442 | int found_parallel = 0; |
| 1443 | char first_opcode[256]; |
| 1444 | char second_opcode[256]; |
| 1445 | char first_operands[256]; |
| 1446 | char second_operands[256]; |
| 1447 | char *parallel_insn; |
| 1448 | |
| 1449 | debug ("In tic30_find_parallel_insn()\n"); |
| 1450 | while (!is_end_of_line[(unsigned char) *next_line]) |
| 1451 | { |
| 1452 | if (*next_line == PARALLEL_SEPARATOR && *(next_line + 1) == PARALLEL_SEPARATOR) |
| 1453 | { |
| 1454 | found_parallel = 1; |
| 1455 | next_line++; |
| 1456 | break; |
| 1457 | } |
| 1458 | next_line++; |
| 1459 | } |
| 1460 | if (!found_parallel) |
| 1461 | return NULL; |
| 1462 | debug ("Found a parallel instruction\n"); |
| 1463 | { |
| 1464 | int i; |
| 1465 | char *opcode, *operands, *line; |
| 1466 | |
| 1467 | for (i = 0; i < 2; i++) |
| 1468 | { |
| 1469 | if (i == 0) |
| 1470 | { |
| 1471 | opcode = &first_opcode[0]; |
| 1472 | operands = &first_operands[0]; |
| 1473 | line = current_line; |
| 1474 | } |
| 1475 | else |
| 1476 | { |
| 1477 | opcode = &second_opcode[0]; |
| 1478 | operands = &second_operands[0]; |
| 1479 | line = next_line; |
| 1480 | } |
| 1481 | { |
| 1482 | int search_status = NONE; |
| 1483 | int char_ptr = 0; |
| 1484 | char c; |
| 1485 | |
| 1486 | while (!is_end_of_line[(unsigned char) (c = *line)]) |
| 1487 | { |
| 1488 | if (is_opcode_char (c) && search_status == NONE) |
| 1489 | { |
| 1490 | opcode[char_ptr++] = TOLOWER (c); |
| 1491 | search_status = START_OPCODE; |
| 1492 | } |
| 1493 | else if (is_opcode_char (c) && search_status == START_OPCODE) |
| 1494 | { |
| 1495 | opcode[char_ptr++] = TOLOWER (c); |
| 1496 | } |
| 1497 | else if (!is_opcode_char (c) && search_status == START_OPCODE) |
| 1498 | { |
| 1499 | opcode[char_ptr] = '\0'; |
| 1500 | char_ptr = 0; |
| 1501 | search_status = END_OPCODE; |
| 1502 | } |
| 1503 | else if (is_operand_char (c) && search_status == START_OPERANDS) |
| 1504 | { |
| 1505 | operands[char_ptr++] = c; |
| 1506 | } |
| 1507 | if (is_operand_char (c) && search_status == END_OPCODE) |
| 1508 | { |
| 1509 | operands[char_ptr++] = c; |
| 1510 | search_status = START_OPERANDS; |
| 1511 | } |
| 1512 | line++; |
| 1513 | } |
| 1514 | if (search_status != START_OPERANDS) |
| 1515 | return NULL; |
| 1516 | operands[char_ptr] = '\0'; |
| 1517 | } |
| 1518 | } |
| 1519 | } |
| 1520 | parallel_insn = (char *) malloc (strlen (first_opcode) + strlen (first_operands) + |
| 1521 | strlen (second_opcode) + strlen (second_operands) + 8); |
| 1522 | sprintf (parallel_insn, "q_%s_%s %s | %s", first_opcode, second_opcode, first_operands, second_operands); |
| 1523 | debug ("parallel insn = %s\n", parallel_insn); |
| 1524 | return parallel_insn; |
| 1525 | } |
| 1526 | |
| 1527 | #undef NONE |
| 1528 | #undef START_OPCODE |
| 1529 | #undef END_OPCODE |
| 1530 | #undef START_OPERANDS |
| 1531 | #undef END_OPERANDS |
| 1532 | |
| 1533 | /* In order to get gas to ignore any | chars at the start of a line, |
| 1534 | this function returns true if a | is found in a line. */ |
| 1535 | |
| 1536 | int |
| 1537 | tic30_unrecognized_line (c) |
| 1538 | int c; |
| 1539 | { |
| 1540 | debug ("In tc_unrecognized_line\n"); |
| 1541 | return (c == PARALLEL_SEPARATOR); |
| 1542 | } |
| 1543 | |
| 1544 | int |
| 1545 | md_estimate_size_before_relax (fragP, segment) |
| 1546 | fragS *fragP; |
| 1547 | segT segment; |
| 1548 | { |
| 1549 | debug ("In md_estimate_size_before_relax()\n"); |
| 1550 | return 0; |
| 1551 | } |
| 1552 | |
| 1553 | void |
| 1554 | md_convert_frag (abfd, sec, fragP) |
| 1555 | bfd *abfd; |
| 1556 | segT sec; |
| 1557 | register fragS *fragP; |
| 1558 | { |
| 1559 | debug ("In md_convert_frag()\n"); |
| 1560 | } |
| 1561 | |
| 1562 | int |
| 1563 | md_apply_fix (fixP, valP) |
| 1564 | fixS *fixP; |
| 1565 | valueT *valP; |
| 1566 | { |
| 1567 | valueT value = *valP; |
| 1568 | |
| 1569 | debug ("In md_apply_fix() with value = %ld\n", (long) value); |
| 1570 | debug ("Values in fixP\n"); |
| 1571 | debug ("fx_size = %d\n", fixP->fx_size); |
| 1572 | debug ("fx_pcrel = %d\n", fixP->fx_pcrel); |
| 1573 | debug ("fx_where = %d\n", fixP->fx_where); |
| 1574 | debug ("fx_offset = %d\n", (int) fixP->fx_offset); |
| 1575 | { |
| 1576 | char *buf = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 1577 | value /= INSN_SIZE; |
| 1578 | if (fixP->fx_size == 1) |
| 1579 | { /* Special fix for LDP instruction. */ |
| 1580 | value = (value & 0x00FF0000) >> 16; |
| 1581 | } |
| 1582 | debug ("new value = %ld\n", (long) value); |
| 1583 | md_number_to_chars (buf, value, fixP->fx_size); |
| 1584 | } |
| 1585 | return 1; |
| 1586 | } |
| 1587 | |
| 1588 | int |
| 1589 | md_parse_option (c, arg) |
| 1590 | int c; |
| 1591 | char *arg; |
| 1592 | { |
| 1593 | int i; |
| 1594 | |
| 1595 | debug ("In md_parse_option()\n"); |
| 1596 | for (i = 0; i < c; i++) |
| 1597 | { |
| 1598 | printf ("%c\n", arg[c]); |
| 1599 | } |
| 1600 | return 0; |
| 1601 | } |
| 1602 | |
| 1603 | void |
| 1604 | md_show_usage (stream) |
| 1605 | FILE *stream; |
| 1606 | { |
| 1607 | debug ("In md_show_usage()\n"); |
| 1608 | } |
| 1609 | |
| 1610 | symbolS * |
| 1611 | md_undefined_symbol (name) |
| 1612 | char *name; |
| 1613 | { |
| 1614 | debug ("In md_undefined_symbol()\n"); |
| 1615 | return (symbolS *) 0; |
| 1616 | } |
| 1617 | |
| 1618 | valueT |
| 1619 | md_section_align (segment, size) |
| 1620 | segT segment; |
| 1621 | valueT size; |
| 1622 | { |
| 1623 | debug ("In md_section_align() segment = %d and size = %d\n", segment, size); |
| 1624 | size = (size + 3) / 4; |
| 1625 | size *= 4; |
| 1626 | debug ("New size value = %d\n", size); |
| 1627 | return size; |
| 1628 | } |
| 1629 | |
| 1630 | long |
| 1631 | md_pcrel_from (fixP) |
| 1632 | fixS *fixP; |
| 1633 | { |
| 1634 | int offset; |
| 1635 | |
| 1636 | debug ("In md_pcrel_from()\n"); |
| 1637 | debug ("fx_where = %d\n", fixP->fx_where); |
| 1638 | debug ("fx_size = %d\n", fixP->fx_size); |
| 1639 | /* Find the opcode that represents the current instruction in the fr_literal |
| 1640 | storage area, and check bit 21. Bit 21 contains whether the current instruction |
| 1641 | is a delayed one or not, and then set the offset value appropriately. */ |
| 1642 | if (fixP->fx_frag->fr_literal[fixP->fx_where - fixP->fx_size + 1] & 0x20) |
| 1643 | offset = 3; |
| 1644 | else |
| 1645 | offset = 1; |
| 1646 | debug ("offset = %d\n", offset); |
| 1647 | /* PC Relative instructions have a format: |
| 1648 | displacement = Label - (PC + offset) |
| 1649 | This function returns PC + offset where: |
| 1650 | fx_where - fx_size = PC |
| 1651 | INSN_SIZE * offset = offset number of instructions |
| 1652 | */ |
| 1653 | return fixP->fx_where - fixP->fx_size + (INSN_SIZE * offset); |
| 1654 | } |
| 1655 | |
| 1656 | char * |
| 1657 | md_atof (what_statement_type, literalP, sizeP) |
| 1658 | int what_statement_type; |
| 1659 | char *literalP; |
| 1660 | int *sizeP; |
| 1661 | { |
| 1662 | int prec; |
| 1663 | char *token; |
| 1664 | char keepval; |
| 1665 | unsigned long value; |
| 1666 | /* char *atof_ieee (); */ |
| 1667 | float float_value; |
| 1668 | debug ("In md_atof()\n"); |
| 1669 | debug ("precision = %c\n", what_statement_type); |
| 1670 | debug ("literal = %s\n", literalP); |
| 1671 | debug ("line = "); |
| 1672 | token = input_line_pointer; |
| 1673 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
| 1674 | && (*input_line_pointer != ',')) |
| 1675 | { |
| 1676 | debug ("%c", *input_line_pointer); |
| 1677 | input_line_pointer++; |
| 1678 | } |
| 1679 | keepval = *input_line_pointer; |
| 1680 | *input_line_pointer = '\0'; |
| 1681 | debug ("\n"); |
| 1682 | float_value = (float) atof (token); |
| 1683 | *input_line_pointer = keepval; |
| 1684 | debug ("float_value = %f\n", float_value); |
| 1685 | switch (what_statement_type) |
| 1686 | { |
| 1687 | case 'f': |
| 1688 | case 'F': |
| 1689 | case 's': |
| 1690 | case 'S': |
| 1691 | prec = 2; |
| 1692 | break; |
| 1693 | |
| 1694 | case 'd': |
| 1695 | case 'D': |
| 1696 | case 'r': |
| 1697 | case 'R': |
| 1698 | prec = 4; |
| 1699 | break; |
| 1700 | |
| 1701 | default: |
| 1702 | *sizeP = 0; |
| 1703 | return "Bad call to MD_ATOF()"; |
| 1704 | } |
| 1705 | if (float_value == 0.0) |
| 1706 | { |
| 1707 | value = (prec == 2) ? 0x00008000L : 0x80000000L; |
| 1708 | } |
| 1709 | else |
| 1710 | { |
| 1711 | unsigned long exp, sign, mant, tmsfloat; |
| 1712 | tmsfloat = *((long *) &float_value); |
| 1713 | sign = tmsfloat & 0x80000000; |
| 1714 | mant = tmsfloat & 0x007FFFFF; |
| 1715 | exp = tmsfloat & 0x7F800000; |
| 1716 | exp <<= 1; |
| 1717 | if (exp == 0xFF000000) |
| 1718 | { |
| 1719 | if (mant == 0) |
| 1720 | value = 0x7F7FFFFF; |
| 1721 | else if (sign == 0) |
| 1722 | value = 0x7F7FFFFF; |
| 1723 | else |
| 1724 | value = 0x7F800000; |
| 1725 | } |
| 1726 | else |
| 1727 | { |
| 1728 | exp -= 0x7F000000; |
| 1729 | if (sign) |
| 1730 | { |
| 1731 | mant = mant & 0x007FFFFF; |
| 1732 | mant = -mant; |
| 1733 | mant = mant & 0x00FFFFFF; |
| 1734 | if (mant == 0) |
| 1735 | { |
| 1736 | mant |= 0x00800000; |
| 1737 | exp = (long) exp - 0x01000000; |
| 1738 | } |
| 1739 | } |
| 1740 | tmsfloat = exp | mant; |
| 1741 | value = tmsfloat; |
| 1742 | } |
| 1743 | if (prec == 2) |
| 1744 | { |
| 1745 | long exp, mant; |
| 1746 | |
| 1747 | if (tmsfloat == 0x80000000) |
| 1748 | { |
| 1749 | value = 0x8000; |
| 1750 | } |
| 1751 | else |
| 1752 | { |
| 1753 | value = 0; |
| 1754 | exp = (tmsfloat & 0xFF000000); |
| 1755 | exp >>= 24; |
| 1756 | mant = tmsfloat & 0x007FFFFF; |
| 1757 | if (tmsfloat & 0x00800000) |
| 1758 | { |
| 1759 | mant |= 0xFF000000; |
| 1760 | mant += 0x00000800; |
| 1761 | mant >>= 12; |
| 1762 | mant |= 0x00000800; |
| 1763 | mant &= 0x0FFF; |
| 1764 | if (exp > 7) |
| 1765 | value = 0x7800; |
| 1766 | } |
| 1767 | else |
| 1768 | { |
| 1769 | mant |= 0x00800000; |
| 1770 | mant += 0x00000800; |
| 1771 | exp += (mant >> 24); |
| 1772 | mant >>= 12; |
| 1773 | mant &= 0x07FF; |
| 1774 | if (exp > 7) |
| 1775 | value = 0x77FF; |
| 1776 | } |
| 1777 | if (exp < -8) |
| 1778 | value = 0x8000; |
| 1779 | if (value == 0) |
| 1780 | { |
| 1781 | mant = (exp << 12) | mant; |
| 1782 | value = mant & 0xFFFF; |
| 1783 | } |
| 1784 | } |
| 1785 | } |
| 1786 | } |
| 1787 | md_number_to_chars (literalP, value, prec); |
| 1788 | *sizeP = prec; |
| 1789 | return 0; |
| 1790 | } |
| 1791 | |
| 1792 | void |
| 1793 | md_number_to_chars (buf, val, n) |
| 1794 | char *buf; |
| 1795 | valueT val; |
| 1796 | int n; |
| 1797 | { |
| 1798 | debug ("In md_number_to_chars()\n"); |
| 1799 | number_to_chars_bigendian (buf, val, n); |
| 1800 | /* number_to_chars_littleendian(buf,val,n); */ |
| 1801 | } |
| 1802 | |
| 1803 | #define F(SZ,PCREL) (((SZ) << 1) + (PCREL)) |
| 1804 | #define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break |
| 1805 | |
| 1806 | arelent * |
| 1807 | tc_gen_reloc (section, fixP) |
| 1808 | asection *section; |
| 1809 | fixS *fixP; |
| 1810 | { |
| 1811 | arelent *rel; |
| 1812 | bfd_reloc_code_real_type code = 0; |
| 1813 | |
| 1814 | debug ("In tc_gen_reloc()\n"); |
| 1815 | debug ("fixP.size = %d\n", fixP->fx_size); |
| 1816 | debug ("fixP.pcrel = %d\n", fixP->fx_pcrel); |
| 1817 | debug ("addsy.name = %s\n", S_GET_NAME (fixP->fx_addsy)); |
| 1818 | switch (F (fixP->fx_size, fixP->fx_pcrel)) |
| 1819 | { |
| 1820 | MAP (1, 0, BFD_RELOC_TIC30_LDP); |
| 1821 | MAP (2, 0, BFD_RELOC_16); |
| 1822 | MAP (3, 0, BFD_RELOC_24); |
| 1823 | MAP (2, 1, BFD_RELOC_16_PCREL); |
| 1824 | MAP (4, 0, BFD_RELOC_32); |
| 1825 | default: |
| 1826 | as_bad ("Can not do %d byte %srelocation", fixP->fx_size, |
| 1827 | fixP->fx_pcrel ? "pc-relative " : ""); |
| 1828 | } |
| 1829 | #undef MAP |
| 1830 | #undef F |
| 1831 | |
| 1832 | rel = (arelent *) xmalloc (sizeof (arelent)); |
| 1833 | assert (rel != 0); |
| 1834 | rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 1835 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy); |
| 1836 | rel->address = fixP->fx_frag->fr_address + fixP->fx_where; |
| 1837 | if (fixP->fx_pcrel) |
| 1838 | rel->addend = fixP->fx_addnumber; |
| 1839 | else |
| 1840 | rel->addend = 0; |
| 1841 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); |
| 1842 | if (!rel->howto) |
| 1843 | { |
| 1844 | const char *name; |
| 1845 | name = S_GET_NAME (fixP->fx_addsy); |
| 1846 | if (name == NULL) |
| 1847 | name = "<unknown>"; |
| 1848 | as_fatal ("Cannot generate relocation type for symbol %s, code %s", name, bfd_get_reloc_code_name (code)); |
| 1849 | } |
| 1850 | return rel; |
| 1851 | } |
| 1852 | |
| 1853 | void |
| 1854 | tc_aout_pre_write_hook () |
| 1855 | { |
| 1856 | debug ("In tc_aout_pre_write_hook()\n"); |
| 1857 | } |
| 1858 | |
| 1859 | void |
| 1860 | md_operand (expressionP) |
| 1861 | expressionS *expressionP; |
| 1862 | { |
| 1863 | debug ("In md_operand()\n"); |
| 1864 | } |
| 1865 | |
| 1866 | char output_invalid_buf[8]; |
| 1867 | |
| 1868 | char * |
| 1869 | output_invalid (c) |
| 1870 | char c; |
| 1871 | { |
| 1872 | if (ISPRINT (c)) |
| 1873 | sprintf (output_invalid_buf, "'%c'", c); |
| 1874 | else |
| 1875 | sprintf (output_invalid_buf, "(0x%x)", (unsigned) c); |
| 1876 | return output_invalid_buf; |
| 1877 | } |