| 1 | /* tc-pdp11.c - pdp11-specific - |
| 2 | Copyright 2001, 2002, 2004 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | /* |
| 21 | Apparently unused functions: |
| 22 | md_convert_frag |
| 23 | md_estimate_size_before_relax |
| 24 | md_create_short_jump |
| 25 | md_create_long_jump |
| 26 | */ |
| 27 | |
| 28 | #include "as.h" |
| 29 | #include "safe-ctype.h" |
| 30 | #include "opcode/pdp11.h" |
| 31 | |
| 32 | static int set_option PARAMS ((char *arg)); |
| 33 | static int set_cpu_model PARAMS ((char *arg)); |
| 34 | static int set_machine_model PARAMS ((char *arg)); |
| 35 | |
| 36 | extern int flonum_gen2vax PARAMS ((char format_letter, FLONUM_TYPE * f, |
| 37 | LITTLENUM_TYPE * words)); |
| 38 | |
| 39 | #define TRUE 1 |
| 40 | #define FALSE 0 |
| 41 | |
| 42 | /* |
| 43 | * A representation for PDP-11 machine code. |
| 44 | */ |
| 45 | struct pdp11_code |
| 46 | { |
| 47 | char *error; |
| 48 | int code; |
| 49 | int additional; /* is there an additional word? */ |
| 50 | int word; /* additional word, if any */ |
| 51 | struct |
| 52 | { |
| 53 | bfd_reloc_code_real_type type; |
| 54 | expressionS exp; |
| 55 | int pc_rel; |
| 56 | } reloc; |
| 57 | }; |
| 58 | |
| 59 | /* |
| 60 | * Instruction set extensions. |
| 61 | * |
| 62 | * If you change this from an array to something else, please update |
| 63 | * the "PDP-11 instruction set extensions" comment in pdp11.h. |
| 64 | */ |
| 65 | int pdp11_extension[PDP11_EXT_NUM]; |
| 66 | |
| 67 | /* |
| 68 | * Assembly options. |
| 69 | */ |
| 70 | |
| 71 | #define ASM_OPT_PIC 1 |
| 72 | #define ASM_OPT_NUM 2 |
| 73 | |
| 74 | int asm_option[ASM_OPT_NUM]; |
| 75 | |
| 76 | /* These chars start a comment anywhere in a source file (except inside |
| 77 | another comment */ |
| 78 | const char comment_chars[] = "#/"; |
| 79 | |
| 80 | /* These chars only start a comment at the beginning of a line. */ |
| 81 | const char line_comment_chars[] = "#/"; |
| 82 | |
| 83 | const char line_separator_chars[] = ";"; |
| 84 | |
| 85 | /* Chars that can be used to separate mant from exp in floating point nums */ |
| 86 | const char EXP_CHARS[] = "eE"; |
| 87 | |
| 88 | /* Chars that mean this number is a floating point constant */ |
| 89 | /* as in 0f123.456 */ |
| 90 | /* or 0H1.234E-12 (see exp chars above) */ |
| 91 | const char FLT_CHARS[] = "dDfF"; |
| 92 | |
| 93 | void pseudo_even (int); |
| 94 | void pseudo_bss (int); |
| 95 | |
| 96 | const pseudo_typeS md_pseudo_table[] = |
| 97 | { |
| 98 | { "bss", pseudo_bss, 0 }, |
| 99 | { "even", pseudo_even, 0 }, |
| 100 | { 0, 0, 0 }, |
| 101 | }; |
| 102 | |
| 103 | static void |
| 104 | init_defaults () |
| 105 | { |
| 106 | static int first = 1; |
| 107 | |
| 108 | if (first) |
| 109 | { |
| 110 | set_option ("all-extensions"); |
| 111 | set_option ("pic"); |
| 112 | first = 0; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | static struct hash_control *insn_hash = NULL; |
| 117 | |
| 118 | void |
| 119 | md_begin () |
| 120 | { |
| 121 | int i; |
| 122 | |
| 123 | init_defaults (); |
| 124 | |
| 125 | insn_hash = hash_new (); |
| 126 | if (insn_hash == NULL) |
| 127 | as_fatal ("Virtual memory exhausted"); |
| 128 | |
| 129 | for (i = 0; i < pdp11_num_opcodes; i++) |
| 130 | hash_insert (insn_hash, pdp11_opcodes[i].name, (PTR)(pdp11_opcodes + i)); |
| 131 | for (i = 0; i < pdp11_num_aliases; i++) |
| 132 | hash_insert (insn_hash, pdp11_aliases[i].name, (PTR)(pdp11_aliases + i)); |
| 133 | } |
| 134 | |
| 135 | void |
| 136 | md_number_to_chars (con, value, nbytes) |
| 137 | char con[]; |
| 138 | valueT value; |
| 139 | int nbytes; |
| 140 | { |
| 141 | /* On a PDP-11, 0x1234 is stored as "\x12\x34", and |
| 142 | * 0x12345678 is stored as "\x56\x78\x12\x34". It's |
| 143 | * anyones guess what 0x123456 would be stored like. |
| 144 | */ |
| 145 | |
| 146 | switch (nbytes) |
| 147 | { |
| 148 | case 0: |
| 149 | break; |
| 150 | case 1: |
| 151 | con[0] = value & 0xff; |
| 152 | break; |
| 153 | case 2: |
| 154 | con[0] = value & 0xff; |
| 155 | con[1] = (value >> 8) & 0xff; |
| 156 | break; |
| 157 | case 4: |
| 158 | con[0] = (value >> 16) & 0xff; |
| 159 | con[1] = (value >> 24) & 0xff; |
| 160 | con[2] = value & 0xff; |
| 161 | con[3] = (value >> 8) & 0xff; |
| 162 | break; |
| 163 | default: |
| 164 | BAD_CASE (nbytes); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /* Fix up some data or instructions after we find out the value of a symbol |
| 169 | that they reference. Knows about order of bytes in address. */ |
| 170 | |
| 171 | void |
| 172 | md_apply_fix3 (fixP, valP, seg) |
| 173 | fixS *fixP; |
| 174 | valueT * valP; |
| 175 | segT seg ATTRIBUTE_UNUSED; |
| 176 | { |
| 177 | valueT code; |
| 178 | valueT mask; |
| 179 | valueT val = * valP; |
| 180 | char *buf; |
| 181 | int shift; |
| 182 | int size; |
| 183 | |
| 184 | buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 185 | size = fixP->fx_size; |
| 186 | code = md_chars_to_number (buf, size); |
| 187 | |
| 188 | switch (fixP->fx_r_type) |
| 189 | { |
| 190 | case BFD_RELOC_16: |
| 191 | case BFD_RELOC_16_PCREL: |
| 192 | mask = 0xffff; |
| 193 | shift = 0; |
| 194 | break; |
| 195 | case BFD_RELOC_PDP11_DISP_8_PCREL: |
| 196 | mask = 0x00ff; |
| 197 | shift = 1; |
| 198 | break; |
| 199 | case BFD_RELOC_PDP11_DISP_6_PCREL: |
| 200 | mask = 0x003f; |
| 201 | shift = 1; |
| 202 | val = -val; |
| 203 | break; |
| 204 | default: |
| 205 | BAD_CASE (fixP->fx_r_type); |
| 206 | } |
| 207 | |
| 208 | if (fixP->fx_addsy != NULL) |
| 209 | val += symbol_get_bfdsym (fixP->fx_addsy)->section->vma; |
| 210 | /* *value += fixP->fx_addsy->bsym->section->vma; */ |
| 211 | |
| 212 | code &= ~mask; |
| 213 | code |= (val >> shift) & mask; |
| 214 | number_to_chars_littleendian (buf, code, size); |
| 215 | |
| 216 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) |
| 217 | fixP->fx_done = 1; |
| 218 | } |
| 219 | |
| 220 | long |
| 221 | md_chars_to_number (con, nbytes) |
| 222 | unsigned char con[]; /* Low order byte 1st. */ |
| 223 | int nbytes; /* Number of bytes in the input. */ |
| 224 | { |
| 225 | /* On a PDP-11, 0x1234 is stored as "\x12\x34", and |
| 226 | * 0x12345678 is stored as "\x56\x78\x12\x34". It's |
| 227 | * anyones guess what 0x123456 would be stored like. |
| 228 | */ |
| 229 | |
| 230 | switch (nbytes) |
| 231 | { |
| 232 | case 0: |
| 233 | return 0; |
| 234 | case 1: |
| 235 | return con[0]; |
| 236 | case 2: |
| 237 | return (con[1] << BITS_PER_CHAR) | con[0]; |
| 238 | case 4: |
| 239 | return |
| 240 | (((con[1] << BITS_PER_CHAR) | con[0]) << (2 * BITS_PER_CHAR)) | |
| 241 | ((con[3] << BITS_PER_CHAR) | con[2]); |
| 242 | default: |
| 243 | BAD_CASE (nbytes); |
| 244 | return 0; |
| 245 | } |
| 246 | } |
| 247 | \f |
| 248 | static char * |
| 249 | skip_whitespace (char *str) |
| 250 | { |
| 251 | while (*str == ' ' || *str == '\t') |
| 252 | str++; |
| 253 | return str; |
| 254 | } |
| 255 | |
| 256 | static char * |
| 257 | find_whitespace (char *str) |
| 258 | { |
| 259 | while (*str != ' ' && *str != '\t' && *str != 0) |
| 260 | str++; |
| 261 | return str; |
| 262 | } |
| 263 | |
| 264 | static char * |
| 265 | parse_reg (char *str, struct pdp11_code *operand) |
| 266 | { |
| 267 | str = skip_whitespace (str); |
| 268 | if (TOLOWER (*str) == 'r') |
| 269 | { |
| 270 | str++; |
| 271 | switch (*str) |
| 272 | { |
| 273 | case '0': case '1': case '2': case '3': |
| 274 | case '4': case '5': case '6': case '7': |
| 275 | operand->code = *str - '0'; |
| 276 | str++; |
| 277 | break; |
| 278 | default: |
| 279 | operand->error = "Bad register name"; |
| 280 | return str - 1; |
| 281 | } |
| 282 | } |
| 283 | else if (strncmp (str, "sp", 2) == 0 || |
| 284 | strncmp (str, "SP", 2) == 0) |
| 285 | { |
| 286 | operand->code = 6; |
| 287 | str += 2; |
| 288 | } |
| 289 | else if (strncmp (str, "pc", 2) == 0 || |
| 290 | strncmp (str, "PC", 2) == 0) |
| 291 | { |
| 292 | operand->code = 7; |
| 293 | str += 2; |
| 294 | } |
| 295 | else |
| 296 | { |
| 297 | operand->error = "Bad register name"; |
| 298 | return str; |
| 299 | } |
| 300 | |
| 301 | return str; |
| 302 | } |
| 303 | |
| 304 | static char * |
| 305 | parse_ac5 (char *str, struct pdp11_code *operand) |
| 306 | { |
| 307 | str = skip_whitespace (str); |
| 308 | if (strncmp (str, "fr", 2) == 0 || |
| 309 | strncmp (str, "FR", 2) == 0 || |
| 310 | strncmp (str, "ac", 2) == 0 || |
| 311 | strncmp (str, "AC", 2) == 0) |
| 312 | { |
| 313 | str += 2; |
| 314 | switch (*str) |
| 315 | { |
| 316 | case '0': case '1': case '2': case '3': |
| 317 | case '4': case '5': |
| 318 | operand->code = *str - '0'; |
| 319 | str++; |
| 320 | break; |
| 321 | default: |
| 322 | operand->error = "Bad register name"; |
| 323 | return str - 2; |
| 324 | } |
| 325 | } |
| 326 | else |
| 327 | { |
| 328 | operand->error = "Bad register name"; |
| 329 | return str; |
| 330 | } |
| 331 | |
| 332 | return str; |
| 333 | } |
| 334 | |
| 335 | static char * |
| 336 | parse_ac (char *str, struct pdp11_code *operand) |
| 337 | { |
| 338 | str = parse_ac5 (str, operand); |
| 339 | if (!operand->error && operand->code > 3) |
| 340 | { |
| 341 | operand->error = "Bad register name"; |
| 342 | return str - 3; |
| 343 | } |
| 344 | |
| 345 | return str; |
| 346 | } |
| 347 | |
| 348 | static char * |
| 349 | parse_expression (char *str, struct pdp11_code *operand) |
| 350 | { |
| 351 | char *save_input_line_pointer; |
| 352 | segT seg; |
| 353 | |
| 354 | save_input_line_pointer = input_line_pointer; |
| 355 | input_line_pointer = str; |
| 356 | seg = expression (&operand->reloc.exp); |
| 357 | if (seg == NULL) |
| 358 | { |
| 359 | input_line_pointer = save_input_line_pointer; |
| 360 | operand->error = "Error in expression"; |
| 361 | return str; |
| 362 | } |
| 363 | |
| 364 | str = input_line_pointer; |
| 365 | input_line_pointer = save_input_line_pointer; |
| 366 | |
| 367 | operand->reloc.pc_rel = 0; |
| 368 | |
| 369 | #if 0 |
| 370 | /* FIXME: what follows is broken badly. You can't deal with differences |
| 371 | in radix conventions this way, because of symbolic constants, constant |
| 372 | expressions made up of pieces of differing radix, etc. The only |
| 373 | choices are to change ../expr.c to know about pdp11 conventions, or |
| 374 | to accept the fact that gas will use consistent conventions that differ |
| 375 | from those of traditional pdp11 assemblers. For now, I've |
| 376 | chosen the latter. paul koning, 12/23/2001 |
| 377 | */ |
| 378 | if (operand->reloc.exp.X_op == O_constant) |
| 379 | { |
| 380 | if (*str == '.') |
| 381 | str++; |
| 382 | else |
| 383 | { |
| 384 | /* FIXME: buffer overflow! */ |
| 385 | char buf[100]; |
| 386 | char *end; |
| 387 | |
| 388 | sprintf (buf, "%ld", operand->reloc.exp.X_add_number); |
| 389 | operand->reloc.exp.X_add_number = strtol (buf, &end, 8); |
| 390 | } |
| 391 | } |
| 392 | #endif |
| 393 | return str; |
| 394 | } |
| 395 | |
| 396 | static char * |
| 397 | parse_op_no_deferred (char *str, struct pdp11_code *operand) |
| 398 | { |
| 399 | LITTLENUM_TYPE literal_float[2]; |
| 400 | |
| 401 | str = skip_whitespace (str); |
| 402 | |
| 403 | switch (*str) |
| 404 | { |
| 405 | case '(': /* (rn) and (rn)+ */ |
| 406 | str = parse_reg (str + 1, operand); |
| 407 | if (operand->error) |
| 408 | return str; |
| 409 | str = skip_whitespace (str); |
| 410 | if (*str != ')') |
| 411 | { |
| 412 | operand->error = "Missing ')'"; |
| 413 | return str; |
| 414 | } |
| 415 | str++; |
| 416 | if (*str == '+') |
| 417 | { |
| 418 | operand->code |= 020; |
| 419 | str++; |
| 420 | } |
| 421 | else |
| 422 | { |
| 423 | operand->code |= 010; |
| 424 | } |
| 425 | break; |
| 426 | |
| 427 | case '#': /* immediate */ |
| 428 | case '$': |
| 429 | str = parse_expression (str + 1, operand); |
| 430 | if (operand->error) |
| 431 | return str; |
| 432 | operand->additional = TRUE; |
| 433 | operand->word = operand->reloc.exp.X_add_number; |
| 434 | switch (operand->reloc.exp.X_op) |
| 435 | { |
| 436 | case O_constant: |
| 437 | break; |
| 438 | case O_symbol: |
| 439 | case O_add: |
| 440 | case O_subtract: |
| 441 | operand->reloc.type = BFD_RELOC_16; |
| 442 | operand->reloc.pc_rel = 0; |
| 443 | break; |
| 444 | case O_big: |
| 445 | if (operand->reloc.exp.X_add_number > 0) |
| 446 | { |
| 447 | operand->error = "Error in expression"; |
| 448 | break; |
| 449 | } |
| 450 | /* it's a floating literal... */ |
| 451 | know (operand->reloc.exp.X_add_number < 0); |
| 452 | flonum_gen2vax ('f', &generic_floating_point_number, literal_float); |
| 453 | operand->word = literal_float[0]; |
| 454 | if (literal_float[1] != 0) |
| 455 | as_warn (_("Low order bits truncated in immediate float operand")); |
| 456 | break; |
| 457 | default: |
| 458 | operand->error = "Error in expression"; |
| 459 | break; |
| 460 | } |
| 461 | operand->code = 027; |
| 462 | break; |
| 463 | |
| 464 | default: /* label, d(rn), -(rn) */ |
| 465 | { |
| 466 | char *old = str; |
| 467 | |
| 468 | if (strncmp (str, "-(", 2) == 0) /* -(rn) */ |
| 469 | { |
| 470 | str = parse_reg (str + 2, operand); |
| 471 | if (operand->error) |
| 472 | return str; |
| 473 | str = skip_whitespace (str); |
| 474 | if (*str != ')') |
| 475 | { |
| 476 | operand->error = "Missing ')'"; |
| 477 | return str; |
| 478 | } |
| 479 | operand->code |= 040; |
| 480 | str++; |
| 481 | break; |
| 482 | } |
| 483 | |
| 484 | str = parse_expression (str, operand); |
| 485 | if (operand->error) |
| 486 | return str; |
| 487 | |
| 488 | str = skip_whitespace (str); |
| 489 | |
| 490 | if (*str != '(') /* label */ |
| 491 | { |
| 492 | if (operand->reloc.exp.X_op != O_symbol) |
| 493 | { |
| 494 | operand->error = "Label expected"; |
| 495 | return old; |
| 496 | } |
| 497 | operand->code = 067; |
| 498 | operand->additional = 1; |
| 499 | operand->word = 0; |
| 500 | operand->reloc.type = BFD_RELOC_16_PCREL; |
| 501 | operand->reloc.pc_rel = 1; |
| 502 | break; |
| 503 | } |
| 504 | |
| 505 | str++; /* d(rn) */ |
| 506 | str = parse_reg (str, operand); |
| 507 | if (operand->error) |
| 508 | return str; |
| 509 | |
| 510 | str = skip_whitespace (str); |
| 511 | |
| 512 | if (*str != ')') |
| 513 | { |
| 514 | operand->error = "Missing ')'"; |
| 515 | return str; |
| 516 | } |
| 517 | |
| 518 | str++; |
| 519 | operand->additional = TRUE; |
| 520 | operand->code |= 060; |
| 521 | switch (operand->reloc.exp.X_op) |
| 522 | { |
| 523 | case O_symbol: |
| 524 | operand->word = 0; |
| 525 | operand->reloc.pc_rel = 1; |
| 526 | break; |
| 527 | case O_constant: |
| 528 | if ((operand->code & 7) == 7) |
| 529 | { |
| 530 | operand->reloc.pc_rel = 1; |
| 531 | operand->word = operand->reloc.exp.X_add_number; |
| 532 | } |
| 533 | else |
| 534 | { |
| 535 | operand->word = operand->reloc.exp.X_add_number; |
| 536 | } |
| 537 | break; |
| 538 | default: |
| 539 | BAD_CASE (operand->reloc.exp.X_op); |
| 540 | } |
| 541 | break; |
| 542 | } |
| 543 | } |
| 544 | |
| 545 | return str; |
| 546 | } |
| 547 | |
| 548 | static char * |
| 549 | parse_op_noreg (char *str, struct pdp11_code *operand) |
| 550 | { |
| 551 | str = skip_whitespace (str); |
| 552 | operand->error = NULL; |
| 553 | |
| 554 | if (*str == '@' || *str == '*') |
| 555 | { |
| 556 | str = parse_op_no_deferred (str + 1, operand); |
| 557 | if (operand->error) |
| 558 | return str; |
| 559 | operand->code |= 010; |
| 560 | } |
| 561 | else |
| 562 | str = parse_op_no_deferred (str, operand); |
| 563 | |
| 564 | return str; |
| 565 | } |
| 566 | |
| 567 | static char * |
| 568 | parse_op (char *str, struct pdp11_code *operand) |
| 569 | { |
| 570 | str = skip_whitespace (str); |
| 571 | |
| 572 | str = parse_reg (str, operand); |
| 573 | if (!operand->error) |
| 574 | return str; |
| 575 | |
| 576 | operand->error = NULL; |
| 577 | parse_ac5 (str, operand); |
| 578 | if (!operand->error) |
| 579 | { |
| 580 | operand->error = "Float AC not legal as integer operand"; |
| 581 | return str; |
| 582 | } |
| 583 | |
| 584 | return parse_op_noreg (str, operand); |
| 585 | } |
| 586 | |
| 587 | static char * |
| 588 | parse_fop (char *str, struct pdp11_code *operand) |
| 589 | { |
| 590 | str = skip_whitespace (str); |
| 591 | |
| 592 | str = parse_ac5 (str, operand); |
| 593 | if (!operand->error) |
| 594 | return str; |
| 595 | |
| 596 | operand->error = NULL; |
| 597 | parse_reg (str, operand); |
| 598 | if (!operand->error) |
| 599 | { |
| 600 | operand->error = "General register not legal as float operand"; |
| 601 | return str; |
| 602 | } |
| 603 | |
| 604 | return parse_op_noreg (str, operand); |
| 605 | } |
| 606 | |
| 607 | static char * |
| 608 | parse_separator (char *str, int *error) |
| 609 | { |
| 610 | str = skip_whitespace (str); |
| 611 | *error = (*str != ','); |
| 612 | if (!*error) |
| 613 | str++; |
| 614 | return str; |
| 615 | } |
| 616 | |
| 617 | void |
| 618 | md_assemble (instruction_string) |
| 619 | char *instruction_string; |
| 620 | { |
| 621 | const struct pdp11_opcode *op; |
| 622 | struct pdp11_code insn, op1, op2; |
| 623 | int error; |
| 624 | int size; |
| 625 | char *err = NULL; |
| 626 | char *str; |
| 627 | char *p; |
| 628 | char c; |
| 629 | |
| 630 | str = skip_whitespace (instruction_string); |
| 631 | p = find_whitespace (str); |
| 632 | if (p - str == 0) |
| 633 | { |
| 634 | as_bad ("No instruction found"); |
| 635 | return; |
| 636 | } |
| 637 | |
| 638 | c = *p; |
| 639 | *p = '\0'; |
| 640 | op = (struct pdp11_opcode *)hash_find (insn_hash, str); |
| 641 | *p = c; |
| 642 | if (op == 0) |
| 643 | { |
| 644 | #if 0 |
| 645 | op1.error = NULL; |
| 646 | op1.additional = FALSE; |
| 647 | op1.reloc.type = BFD_RELOC_NONE; |
| 648 | op1.code = 0; |
| 649 | op1.word = 0; |
| 650 | str = parse_expression (str, &op1); |
| 651 | if (op1.error) |
| 652 | { |
| 653 | as_bad (op1.error); |
| 654 | return; |
| 655 | } |
| 656 | |
| 657 | { |
| 658 | char *to = frag_more (2); |
| 659 | |
| 660 | md_number_to_chars (to, op1.code, 2); |
| 661 | if (insn.reloc.type != BFD_RELOC_NONE) |
| 662 | fix_new_exp (frag_now, to - frag_now->fr_literal, 2, |
| 663 | &insn.reloc.exp, insn.reloc.pc_rel, insn.reloc.type); |
| 664 | } |
| 665 | #else |
| 666 | as_bad (_("Unknown instruction '%s'"), str); |
| 667 | #endif |
| 668 | |
| 669 | return; |
| 670 | } |
| 671 | |
| 672 | if (!pdp11_extension[op->extension]) |
| 673 | { |
| 674 | as_warn ("Unsupported instruction set extension: %s", op->name); |
| 675 | return; |
| 676 | } |
| 677 | |
| 678 | insn.error = NULL; |
| 679 | insn.code = op->opcode; |
| 680 | insn.reloc.type = BFD_RELOC_NONE; |
| 681 | op1.error = NULL; |
| 682 | op1.additional = FALSE; |
| 683 | op1.reloc.type = BFD_RELOC_NONE; |
| 684 | op2.error = NULL; |
| 685 | op2.additional = FALSE; |
| 686 | op2.reloc.type = BFD_RELOC_NONE; |
| 687 | |
| 688 | str = p; |
| 689 | size = 2; |
| 690 | |
| 691 | switch (op->type) |
| 692 | { |
| 693 | case PDP11_OPCODE_NO_OPS: |
| 694 | str = skip_whitespace (str); |
| 695 | if (*str == 0) |
| 696 | str = ""; |
| 697 | break; |
| 698 | |
| 699 | case PDP11_OPCODE_IMM3: |
| 700 | case PDP11_OPCODE_IMM6: |
| 701 | case PDP11_OPCODE_IMM8: |
| 702 | str = skip_whitespace (str); |
| 703 | if (*str == '#' || *str == '$') |
| 704 | str++; |
| 705 | str = parse_expression (str, &op1); |
| 706 | if (op1.error) |
| 707 | break; |
| 708 | if (op1.reloc.exp.X_op != O_constant || op1.reloc.type != BFD_RELOC_NONE) |
| 709 | { |
| 710 | op1.error = "operand is not an absolute constant"; |
| 711 | break; |
| 712 | } |
| 713 | switch (op->type) |
| 714 | { |
| 715 | case PDP11_OPCODE_IMM3: |
| 716 | if (op1.reloc.exp.X_add_number & ~7) |
| 717 | { |
| 718 | op1.error = "3-bit immediate out of range"; |
| 719 | break; |
| 720 | } |
| 721 | break; |
| 722 | case PDP11_OPCODE_IMM6: |
| 723 | if (op1.reloc.exp.X_add_number & ~0x3f) |
| 724 | { |
| 725 | op1.error = "6-bit immediate out of range"; |
| 726 | break; |
| 727 | } |
| 728 | break; |
| 729 | case PDP11_OPCODE_IMM8: |
| 730 | if (op1.reloc.exp.X_add_number & ~0xff) |
| 731 | { |
| 732 | op1.error = "8-bit immediate out of range"; |
| 733 | break; |
| 734 | } |
| 735 | break; |
| 736 | } |
| 737 | insn.code |= op1.reloc.exp.X_add_number; |
| 738 | break; |
| 739 | |
| 740 | case PDP11_OPCODE_DISPL: |
| 741 | { |
| 742 | char *new; |
| 743 | new = parse_expression (str, &op1); |
| 744 | op1.code = 0; |
| 745 | op1.reloc.pc_rel = 1; |
| 746 | op1.reloc.type = BFD_RELOC_PDP11_DISP_8_PCREL; |
| 747 | if (op1.reloc.exp.X_op != O_symbol) |
| 748 | { |
| 749 | op1.error = "Symbol expected"; |
| 750 | break; |
| 751 | } |
| 752 | if (op1.code & ~0xff) |
| 753 | { |
| 754 | err = "8-bit displacement out of range"; |
| 755 | break; |
| 756 | } |
| 757 | str = new; |
| 758 | insn.code |= op1.code; |
| 759 | insn.reloc = op1.reloc; |
| 760 | } |
| 761 | break; |
| 762 | |
| 763 | case PDP11_OPCODE_REG: |
| 764 | str = parse_reg (str, &op1); |
| 765 | if (op1.error) |
| 766 | break; |
| 767 | insn.code |= op1.code; |
| 768 | break; |
| 769 | |
| 770 | case PDP11_OPCODE_OP: |
| 771 | str = parse_op (str, &op1); |
| 772 | if (op1.error) |
| 773 | break; |
| 774 | insn.code |= op1.code; |
| 775 | if (op1.additional) |
| 776 | size += 2; |
| 777 | break; |
| 778 | |
| 779 | case PDP11_OPCODE_FOP: |
| 780 | str = parse_fop (str, &op1); |
| 781 | if (op1.error) |
| 782 | break; |
| 783 | insn.code |= op1.code; |
| 784 | if (op1.additional) |
| 785 | size += 2; |
| 786 | break; |
| 787 | |
| 788 | case PDP11_OPCODE_REG_OP: |
| 789 | str = parse_reg (str, &op2); |
| 790 | if (op2.error) |
| 791 | break; |
| 792 | insn.code |= op2.code << 6; |
| 793 | str = parse_separator (str, &error); |
| 794 | if (error) |
| 795 | { |
| 796 | op2.error = "Missing ','"; |
| 797 | break; |
| 798 | } |
| 799 | str = parse_op (str, &op1); |
| 800 | if (op1.error) |
| 801 | break; |
| 802 | insn.code |= op1.code; |
| 803 | if (op1.additional) |
| 804 | size += 2; |
| 805 | break; |
| 806 | |
| 807 | case PDP11_OPCODE_REG_OP_REV: |
| 808 | str = parse_op (str, &op1); |
| 809 | if (op1.error) |
| 810 | break; |
| 811 | insn.code |= op1.code; |
| 812 | if (op1.additional) |
| 813 | size += 2; |
| 814 | str = parse_separator (str, &error); |
| 815 | if (error) |
| 816 | { |
| 817 | op2.error = "Missing ','"; |
| 818 | break; |
| 819 | } |
| 820 | str = parse_reg (str, &op2); |
| 821 | if (op2.error) |
| 822 | break; |
| 823 | insn.code |= op2.code << 6; |
| 824 | break; |
| 825 | |
| 826 | case PDP11_OPCODE_AC_FOP: |
| 827 | str = parse_ac (str, &op2); |
| 828 | if (op2.error) |
| 829 | break; |
| 830 | insn.code |= op2.code << 6; |
| 831 | str = parse_separator (str, &error); |
| 832 | if (error) |
| 833 | { |
| 834 | op1.error = "Missing ','"; |
| 835 | break; |
| 836 | } |
| 837 | str = parse_fop (str, &op1); |
| 838 | if (op1.error) |
| 839 | break; |
| 840 | insn.code |= op1.code; |
| 841 | if (op1.additional) |
| 842 | size += 2; |
| 843 | break; |
| 844 | |
| 845 | case PDP11_OPCODE_FOP_AC: |
| 846 | str = parse_fop (str, &op1); |
| 847 | if (op1.error) |
| 848 | break; |
| 849 | insn.code |= op1.code; |
| 850 | if (op1.additional) |
| 851 | size += 2; |
| 852 | str = parse_separator (str, &error); |
| 853 | if (error) |
| 854 | { |
| 855 | op1.error = "Missing ','"; |
| 856 | break; |
| 857 | } |
| 858 | str = parse_ac (str, &op2); |
| 859 | if (op2.error) |
| 860 | break; |
| 861 | insn.code |= op2.code << 6; |
| 862 | break; |
| 863 | |
| 864 | case PDP11_OPCODE_AC_OP: |
| 865 | str = parse_ac (str, &op2); |
| 866 | if (op2.error) |
| 867 | break; |
| 868 | insn.code |= op2.code << 6; |
| 869 | str = parse_separator (str, &error); |
| 870 | if (error) |
| 871 | { |
| 872 | op1.error = "Missing ','"; |
| 873 | break; |
| 874 | } |
| 875 | str = parse_op (str, &op1); |
| 876 | if (op1.error) |
| 877 | break; |
| 878 | insn.code |= op1.code; |
| 879 | if (op1.additional) |
| 880 | size += 2; |
| 881 | break; |
| 882 | |
| 883 | case PDP11_OPCODE_OP_AC: |
| 884 | str = parse_op (str, &op1); |
| 885 | if (op1.error) |
| 886 | break; |
| 887 | insn.code |= op1.code; |
| 888 | if (op1.additional) |
| 889 | size += 2; |
| 890 | str = parse_separator (str, &error); |
| 891 | if (error) |
| 892 | { |
| 893 | op1.error = "Missing ','"; |
| 894 | break; |
| 895 | } |
| 896 | str = parse_ac (str, &op2); |
| 897 | if (op2.error) |
| 898 | break; |
| 899 | insn.code |= op2.code << 6; |
| 900 | break; |
| 901 | |
| 902 | case PDP11_OPCODE_OP_OP: |
| 903 | str = parse_op (str, &op1); |
| 904 | if (op1.error) |
| 905 | break; |
| 906 | insn.code |= op1.code << 6; |
| 907 | if (op1.additional) |
| 908 | size += 2; |
| 909 | str = parse_separator (str, &error); |
| 910 | if (error) |
| 911 | { |
| 912 | op2.error = "Missing ','"; |
| 913 | break; |
| 914 | } |
| 915 | str = parse_op (str, &op2); |
| 916 | if (op2.error) |
| 917 | break; |
| 918 | insn.code |= op2.code; |
| 919 | if (op2.additional) |
| 920 | size += 2; |
| 921 | break; |
| 922 | |
| 923 | case PDP11_OPCODE_REG_DISPL: |
| 924 | { |
| 925 | char *new; |
| 926 | str = parse_reg (str, &op2); |
| 927 | if (op2.error) |
| 928 | break; |
| 929 | insn.code |= op2.code << 6; |
| 930 | str = parse_separator (str, &error); |
| 931 | if (error) |
| 932 | { |
| 933 | op1.error = "Missing ','"; |
| 934 | break; |
| 935 | } |
| 936 | new = parse_expression (str, &op1); |
| 937 | op1.code = 0; |
| 938 | op1.reloc.pc_rel = 1; |
| 939 | op1.reloc.type = BFD_RELOC_PDP11_DISP_6_PCREL; |
| 940 | if (op1.reloc.exp.X_op != O_symbol) |
| 941 | { |
| 942 | op1.error = "Symbol expected"; |
| 943 | break; |
| 944 | } |
| 945 | if (op1.code & ~0x3f) |
| 946 | { |
| 947 | err = "6-bit displacement out of range"; |
| 948 | break; |
| 949 | } |
| 950 | str = new; |
| 951 | insn.code |= op1.code; |
| 952 | insn.reloc = op1.reloc; |
| 953 | } |
| 954 | break; |
| 955 | |
| 956 | default: |
| 957 | BAD_CASE (op->type); |
| 958 | } |
| 959 | |
| 960 | if (op1.error) |
| 961 | err = op1.error; |
| 962 | else if (op2.error) |
| 963 | err = op2.error; |
| 964 | else |
| 965 | { |
| 966 | str = skip_whitespace (str); |
| 967 | if (*str) |
| 968 | err = "Too many operands"; |
| 969 | } |
| 970 | |
| 971 | { |
| 972 | char *to = NULL; |
| 973 | |
| 974 | if (err) |
| 975 | { |
| 976 | as_bad (err); |
| 977 | return; |
| 978 | } |
| 979 | |
| 980 | to = frag_more (size); |
| 981 | |
| 982 | md_number_to_chars (to, insn.code, 2); |
| 983 | if (insn.reloc.type != BFD_RELOC_NONE) |
| 984 | fix_new_exp (frag_now, to - frag_now->fr_literal, 2, |
| 985 | &insn.reloc.exp, insn.reloc.pc_rel, insn.reloc.type); |
| 986 | to += 2; |
| 987 | |
| 988 | if (op1.additional) |
| 989 | { |
| 990 | md_number_to_chars (to, op1.word, 2); |
| 991 | if (op1.reloc.type != BFD_RELOC_NONE) |
| 992 | fix_new_exp (frag_now, to - frag_now->fr_literal, 2, |
| 993 | &op1.reloc.exp, op1.reloc.pc_rel, op1.reloc.type); |
| 994 | to += 2; |
| 995 | } |
| 996 | |
| 997 | if (op2.additional) |
| 998 | { |
| 999 | md_number_to_chars (to, op2.word, 2); |
| 1000 | if (op2.reloc.type != BFD_RELOC_NONE) |
| 1001 | fix_new_exp (frag_now, to - frag_now->fr_literal, 2, |
| 1002 | &op2.reloc.exp, op2.reloc.pc_rel, op2.reloc.type); |
| 1003 | } |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | int |
| 1008 | md_estimate_size_before_relax (fragP, segment) |
| 1009 | fragS *fragP ATTRIBUTE_UNUSED; |
| 1010 | segT segment ATTRIBUTE_UNUSED; |
| 1011 | { |
| 1012 | return 0; |
| 1013 | } |
| 1014 | |
| 1015 | void |
| 1016 | md_convert_frag (headers, seg, fragP) |
| 1017 | bfd *headers ATTRIBUTE_UNUSED; |
| 1018 | segT seg ATTRIBUTE_UNUSED; |
| 1019 | fragS *fragP ATTRIBUTE_UNUSED; |
| 1020 | { |
| 1021 | } |
| 1022 | |
| 1023 | const int md_short_jump_size = 2; |
| 1024 | const int md_long_jump_size = 4; |
| 1025 | |
| 1026 | void |
| 1027 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) |
| 1028 | char *ptr ATTRIBUTE_UNUSED; |
| 1029 | addressT from_addr ATTRIBUTE_UNUSED; |
| 1030 | addressT to_addr ATTRIBUTE_UNUSED; |
| 1031 | fragS *frag ATTRIBUTE_UNUSED; |
| 1032 | symbolS *to_symbol ATTRIBUTE_UNUSED; |
| 1033 | { |
| 1034 | } |
| 1035 | |
| 1036 | void |
| 1037 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) |
| 1038 | char *ptr ATTRIBUTE_UNUSED; |
| 1039 | addressT from_addr ATTRIBUTE_UNUSED; |
| 1040 | addressT to_addr ATTRIBUTE_UNUSED; |
| 1041 | fragS *frag ATTRIBUTE_UNUSED; |
| 1042 | symbolS *to_symbol ATTRIBUTE_UNUSED; |
| 1043 | { |
| 1044 | } |
| 1045 | |
| 1046 | static int |
| 1047 | set_option (arg) |
| 1048 | char *arg; |
| 1049 | { |
| 1050 | int yes = 1; |
| 1051 | |
| 1052 | if (strcmp (arg, "all-extensions") == 0 || |
| 1053 | strcmp (arg, "all") == 0) |
| 1054 | { |
| 1055 | memset (pdp11_extension, ~0, sizeof pdp11_extension); |
| 1056 | pdp11_extension[PDP11_NONE] = 0; |
| 1057 | return 1; |
| 1058 | } |
| 1059 | else if (strcmp (arg, "no-extensions") == 0) |
| 1060 | { |
| 1061 | memset (pdp11_extension, 0, sizeof pdp11_extension); |
| 1062 | pdp11_extension[PDP11_BASIC] = 1; |
| 1063 | return 1; |
| 1064 | } |
| 1065 | |
| 1066 | if (strncmp (arg, "no-", 3) == 0) |
| 1067 | { |
| 1068 | yes = 0; |
| 1069 | arg += 3; |
| 1070 | } |
| 1071 | |
| 1072 | if (strcmp (arg, "cis") == 0) /* commersial instructions */ |
| 1073 | pdp11_extension[PDP11_CIS] = yes; |
| 1074 | else if (strcmp (arg, "csm") == 0) /* call supervisor mode */ |
| 1075 | pdp11_extension[PDP11_CSM] = yes; |
| 1076 | else if (strcmp (arg, "eis") == 0) /* extended instruction set */ |
| 1077 | pdp11_extension[PDP11_EIS] = pdp11_extension[PDP11_LEIS] = yes; |
| 1078 | else if (strcmp (arg, "fis") == 0 || /* KEV11 floating-point */ |
| 1079 | strcmp (arg, "kev11") == 0 || |
| 1080 | strcmp (arg, "kev-11") == 0) |
| 1081 | pdp11_extension[PDP11_FIS] = yes; |
| 1082 | else if (strcmp (arg, "fpp") == 0 || /* FP-11 floating-point */ |
| 1083 | strcmp (arg, "fpu") == 0 || |
| 1084 | strcmp (arg, "fp11") == 0 || |
| 1085 | strcmp (arg, "fp-11") == 0 || |
| 1086 | strcmp (arg, "fpj11") == 0 || |
| 1087 | strcmp (arg, "fp-j11") == 0 || |
| 1088 | strcmp (arg, "fpj-11") == 0) |
| 1089 | pdp11_extension[PDP11_FPP] = yes; |
| 1090 | else if (strcmp (arg, "limited-eis") == 0) /* limited extended insns */ |
| 1091 | { |
| 1092 | pdp11_extension[PDP11_LEIS] = yes; |
| 1093 | if (!pdp11_extension[PDP11_LEIS]) |
| 1094 | pdp11_extension[PDP11_EIS] = 0; |
| 1095 | } |
| 1096 | else if (strcmp (arg, "mfpt") == 0) /* move from processor type */ |
| 1097 | pdp11_extension[PDP11_MFPT] = yes; |
| 1098 | else if (strncmp (arg, "mproc", 5) == 0 || /* multiprocessor insns: */ |
| 1099 | strncmp (arg, "multiproc", 9) == 0 ) /* TSTSET, WRTLCK */ |
| 1100 | pdp11_extension[PDP11_MPROC] = yes; |
| 1101 | else if (strcmp (arg, "mxps") == 0) /* move from/to proc status */ |
| 1102 | pdp11_extension[PDP11_MXPS] = yes; |
| 1103 | else if (strcmp (arg, "pic") == 0) /* position-independent code */ |
| 1104 | asm_option[ASM_OPT_PIC] = yes; |
| 1105 | else if (strcmp (arg, "spl") == 0) /* set priority level */ |
| 1106 | pdp11_extension[PDP11_SPL] = yes; |
| 1107 | else if (strcmp (arg, "ucode") == 0 || /* microcode instructions: */ |
| 1108 | strcmp (arg, "microcode") == 0) /* LDUB, MED, XFC */ |
| 1109 | pdp11_extension[PDP11_UCODE] = yes; |
| 1110 | else |
| 1111 | return 0; |
| 1112 | |
| 1113 | return 1; |
| 1114 | } |
| 1115 | |
| 1116 | static int |
| 1117 | set_cpu_model (arg) |
| 1118 | char *arg; |
| 1119 | { |
| 1120 | char buf[4]; |
| 1121 | char *model = buf; |
| 1122 | |
| 1123 | if (arg[0] == 'k') |
| 1124 | arg++; |
| 1125 | |
| 1126 | *model++ = *arg++; |
| 1127 | |
| 1128 | if (strchr ("abdx", model[-1]) == NULL) |
| 1129 | return 0; |
| 1130 | |
| 1131 | if (model[-1] == 'd') |
| 1132 | { |
| 1133 | if (arg[0] == 'f' || |
| 1134 | arg[0] == 'j') |
| 1135 | model[-1] = *arg++; |
| 1136 | } |
| 1137 | else if (model[-1] == 'x') |
| 1138 | { |
| 1139 | if (arg[0] == 't') |
| 1140 | model[-1] = *arg++; |
| 1141 | } |
| 1142 | |
| 1143 | if (arg[0] == '-') |
| 1144 | arg++; |
| 1145 | |
| 1146 | if (strncmp (arg, "11", 2) != 0) |
| 1147 | return 0; |
| 1148 | arg += 2; |
| 1149 | |
| 1150 | if (arg[0] == '-') |
| 1151 | { |
| 1152 | if (*++arg == 0) |
| 1153 | return 0; |
| 1154 | } |
| 1155 | |
| 1156 | /* allow up to two revision letters */ |
| 1157 | if (arg[0] != 0) |
| 1158 | *model++ = *arg++; |
| 1159 | if (arg[0] != 0) |
| 1160 | *model++ = *arg++; |
| 1161 | |
| 1162 | *model++ = 0; |
| 1163 | |
| 1164 | set_option ("no-extensions"); |
| 1165 | |
| 1166 | if (strncmp (buf, "a", 1) == 0) /* KA11 (11/15/20) */ |
| 1167 | return 1; /* no extensions */ |
| 1168 | |
| 1169 | else if (strncmp (buf, "b", 1) == 0) /* KB11 (11/45/50/55/70) */ |
| 1170 | return set_option ("eis") && |
| 1171 | set_option ("spl"); |
| 1172 | |
| 1173 | else if (strncmp (buf, "da", 2) == 0) /* KD11-A (11/35/40) */ |
| 1174 | return set_option ("limited-eis"); |
| 1175 | |
| 1176 | else if (strncmp (buf, "db", 2) == 0 || /* KD11-B (11/05/10) */ |
| 1177 | strncmp (buf, "dd", 2) == 0) /* KD11-D (11/04) */ |
| 1178 | return 1; /* no extensions */ |
| 1179 | |
| 1180 | else if (strncmp (buf, "de", 2) == 0) /* KD11-E (11/34) */ |
| 1181 | return set_option ("eis") && |
| 1182 | set_option ("mxps"); |
| 1183 | |
| 1184 | else if (strncmp (buf, "df", 2) == 0 || /* KD11-F (11/03) */ |
| 1185 | strncmp (buf, "dh", 2) == 0 || /* KD11-H (11/03) */ |
| 1186 | strncmp (buf, "dq", 2) == 0) /* KD11-Q (11/03) */ |
| 1187 | return set_option ("limited-eis") && |
| 1188 | set_option ("mxps"); |
| 1189 | |
| 1190 | else if (strncmp (buf, "dk", 2) == 0) /* KD11-K (11/60) */ |
| 1191 | return set_option ("eis") && |
| 1192 | set_option ("mxps") && |
| 1193 | set_option ("ucode"); |
| 1194 | |
| 1195 | else if (strncmp (buf, "dz", 2) == 0) /* KD11-Z (11/44) */ |
| 1196 | return set_option ("csm") && |
| 1197 | set_option ("eis") && |
| 1198 | set_option ("mfpt") && |
| 1199 | set_option ("mxps") && |
| 1200 | set_option ("spl"); |
| 1201 | |
| 1202 | else if (strncmp (buf, "f", 1) == 0) /* F11 (11/23/24) */ |
| 1203 | return set_option ("eis") && |
| 1204 | set_option ("mfpt") && |
| 1205 | set_option ("mxps"); |
| 1206 | |
| 1207 | else if (strncmp (buf, "j", 1) == 0) /* J11 (11/53/73/83/84/93/94)*/ |
| 1208 | return set_option ("csm") && |
| 1209 | set_option ("eis") && |
| 1210 | set_option ("mfpt") && |
| 1211 | set_option ("multiproc") && |
| 1212 | set_option ("mxps") && |
| 1213 | set_option ("spl"); |
| 1214 | |
| 1215 | else if (strncmp (buf, "t", 1) == 0) /* T11 (11/21) */ |
| 1216 | return set_option ("limited-eis") && |
| 1217 | set_option ("mxps"); |
| 1218 | |
| 1219 | else |
| 1220 | return 0; |
| 1221 | } |
| 1222 | |
| 1223 | static int |
| 1224 | set_machine_model (arg) |
| 1225 | char *arg; |
| 1226 | { |
| 1227 | if (strncmp (arg, "pdp-11/", 7) != 0 && |
| 1228 | strncmp (arg, "pdp11/", 6) != 0 && |
| 1229 | strncmp (arg, "11/", 3) != 0) |
| 1230 | return 0; |
| 1231 | |
| 1232 | if (strncmp (arg, "pdp", 3) == 0) |
| 1233 | arg += 3; |
| 1234 | if (arg[0] == '-') |
| 1235 | arg++; |
| 1236 | if (strncmp (arg, "11/", 3) == 0) |
| 1237 | arg += 3; |
| 1238 | |
| 1239 | if (strcmp (arg, "03") == 0) /* 11/03 */ |
| 1240 | return set_cpu_model ("kd11f"); /* KD11-F */ |
| 1241 | |
| 1242 | else if (strcmp (arg, "04") == 0) /* 11/04 */ |
| 1243 | return set_cpu_model ("kd11d"); /* KD11-D */ |
| 1244 | |
| 1245 | else if (strcmp (arg, "05") == 0 || /* 11/05 or 11/10 */ |
| 1246 | strcmp (arg, "10") == 0) |
| 1247 | return set_cpu_model ("kd11b"); /* KD11-B */ |
| 1248 | |
| 1249 | else if (strcmp (arg, "15") == 0 || /* 11/15 or 11/20 */ |
| 1250 | strcmp (arg, "20") == 0) |
| 1251 | return set_cpu_model ("ka11"); /* KA11 */ |
| 1252 | |
| 1253 | else if (strcmp (arg, "21") == 0) /* 11/21 */ |
| 1254 | return set_cpu_model ("t11"); /* T11 */ |
| 1255 | |
| 1256 | else if (strcmp (arg, "23") == 0 || /* 11/23 or 11/24 */ |
| 1257 | strcmp (arg, "24") == 0) |
| 1258 | return set_cpu_model ("f11"); /* F11 */ |
| 1259 | |
| 1260 | else if (strcmp (arg, "34") == 0 || /* 11/34 or 11/34a */ |
| 1261 | strcmp (arg, "34a") == 0) |
| 1262 | return set_cpu_model ("kd11e"); /* KD11-E */ |
| 1263 | |
| 1264 | else if (strcmp (arg, "35") == 0 || /* 11/35 or 11/40 */ |
| 1265 | strcmp (arg, "40") == 0) |
| 1266 | return set_cpu_model ("kd11da"); /* KD11-A */ |
| 1267 | |
| 1268 | else if (strcmp (arg, "44") == 0) /* 11/44 */ |
| 1269 | return set_cpu_model ("kd11dz"); /* KD11-Z */ |
| 1270 | |
| 1271 | else if (strcmp (arg, "45") == 0 || /* 11/45/50/55/70 */ |
| 1272 | strcmp (arg, "50") == 0 || |
| 1273 | strcmp (arg, "55") == 0 || |
| 1274 | strcmp (arg, "70") == 0) |
| 1275 | return set_cpu_model ("kb11"); /* KB11 */ |
| 1276 | |
| 1277 | else if (strcmp (arg, "60") == 0) /* 11/60 */ |
| 1278 | return set_cpu_model ("kd11k"); /* KD11-K */ /* FPP? */ |
| 1279 | |
| 1280 | else if (strcmp (arg, "53") == 0 || /* 11/53/73/83/84/93/94 */ |
| 1281 | strcmp (arg, "73") == 0 || |
| 1282 | strcmp (arg, "83") == 0 || |
| 1283 | strcmp (arg, "84") == 0 || |
| 1284 | strcmp (arg, "93") == 0 || |
| 1285 | strcmp (arg, "94") == 0) |
| 1286 | return set_cpu_model ("j11") && /* J11 */ |
| 1287 | set_option ("fpp"); /* All J11 machines come */ |
| 1288 | /* with FPP installed. */ |
| 1289 | else |
| 1290 | return 0; |
| 1291 | } |
| 1292 | |
| 1293 | const char *md_shortopts = "m:"; |
| 1294 | |
| 1295 | struct option md_longopts[] = |
| 1296 | { |
| 1297 | #define OPTION_CPU 257 |
| 1298 | { "cpu", required_argument, NULL, OPTION_CPU }, |
| 1299 | #define OPTION_MACHINE 258 |
| 1300 | { "machine", required_argument, NULL, OPTION_MACHINE }, |
| 1301 | #define OPTION_PIC 259 |
| 1302 | { "pic", no_argument, NULL, OPTION_PIC }, |
| 1303 | { NULL, no_argument, NULL, 0 } |
| 1304 | }; |
| 1305 | |
| 1306 | size_t md_longopts_size = sizeof (md_longopts); |
| 1307 | |
| 1308 | /* |
| 1309 | * md_parse_option |
| 1310 | * Invocation line includes a switch not recognized by the base assembler. |
| 1311 | * See if it's a processor-specific option. |
| 1312 | */ |
| 1313 | |
| 1314 | int |
| 1315 | md_parse_option (c, arg) |
| 1316 | int c; |
| 1317 | char *arg; |
| 1318 | { |
| 1319 | init_defaults (); |
| 1320 | |
| 1321 | switch (c) |
| 1322 | { |
| 1323 | case 'm': |
| 1324 | if (set_option (arg)) |
| 1325 | return 1; |
| 1326 | if (set_cpu_model (arg)) |
| 1327 | return 1; |
| 1328 | if (set_machine_model (arg)) |
| 1329 | return 1; |
| 1330 | break; |
| 1331 | |
| 1332 | case OPTION_CPU: |
| 1333 | if (set_cpu_model (arg)) |
| 1334 | return 1; |
| 1335 | break; |
| 1336 | |
| 1337 | case OPTION_MACHINE: |
| 1338 | if (set_machine_model (arg)) |
| 1339 | return 1; |
| 1340 | break; |
| 1341 | |
| 1342 | case OPTION_PIC: |
| 1343 | if (set_option ("pic")) |
| 1344 | return 1; |
| 1345 | break; |
| 1346 | |
| 1347 | default: |
| 1348 | break; |
| 1349 | } |
| 1350 | |
| 1351 | return 0; |
| 1352 | } |
| 1353 | |
| 1354 | /* |
| 1355 | One possible way of parsing options. |
| 1356 | |
| 1357 | enum |
| 1358 | { |
| 1359 | OPTION_CSM, |
| 1360 | OPTION_CIS, |
| 1361 | ... |
| 1362 | }; |
| 1363 | |
| 1364 | struct |
| 1365 | { |
| 1366 | const char *pattern; |
| 1367 | int opt; |
| 1368 | const char *description; |
| 1369 | } options; |
| 1370 | |
| 1371 | static struct options extension_opts[] = |
| 1372 | { |
| 1373 | { "Ncsm", OPTION_CSM, |
| 1374 | "allow (disallow) CSM instruction" }, |
| 1375 | { "Ncis", OPTION_CIS, |
| 1376 | "allow (disallow) commersial instruction set" }, |
| 1377 | { "Neis", OPTION_EIS, |
| 1378 | "allow (disallow) extended instruction set" }, |
| 1379 | ... |
| 1380 | { "all-extensions", OPTION_ALL_EXTENSIONS, |
| 1381 | "allow all instruction set extensions\n\ |
| 1382 | (this is the default)" }, |
| 1383 | { "no-extensions", OPTION_NO_EXTENSIONS, |
| 1384 | "disallow all instruction set extensions" }, |
| 1385 | { "pic", OPTION_PIC, |
| 1386 | "position-independent code" }, |
| 1387 | }; |
| 1388 | |
| 1389 | static struct options cpu_opts[] = |
| 1390 | { |
| 1391 | { "Ka_11_*", OPTION_KA11, "KA11 CPU. ..." }, |
| 1392 | { "Kb_11_*", OPTION_KB11, "KB11 CPU. ..." }, |
| 1393 | { "Kd_11_a*", OPTION_KD11A, "KD11-A CPU. ..." }, |
| 1394 | { "Kd_11_b*", OPTION_KD11B, "KD11-B CPU. ..." }, |
| 1395 | { "Kd_11_d*", OPTION_KD11D, "KD11-D CPU. ..." }, |
| 1396 | { "Kd_11_e*", OPTION_KD11E, "KD11-E CPU. ..." }, |
| 1397 | { "Kd_11_f*", OPTION_KD11F, "KD11-F CPU. ..." }, |
| 1398 | { "Kd_11_h*", OPTION_KD11H, "KD11-H CPU. ..." }, |
| 1399 | { "Kd_11_q*", OPTION_KD11Q, "KD11-Q CPU. ..." }, |
| 1400 | { "Kd_11_z*", OPTION_KD11Z, "KD11-Z CPU. ..." }, |
| 1401 | { "Df_11_*", OPTION_F11, "F11 CPU. ..." }, |
| 1402 | { "Dj_11_*", OPTION_J11, "J11 CPU. ..." }, |
| 1403 | { "Dt_11_*", OPTION_T11, "T11 CPU. ..." }, |
| 1404 | }; |
| 1405 | |
| 1406 | static struct options model_opts[] = |
| 1407 | { |
| 1408 | { "P03", OPTION_PDP11_03, "same as ..." }, |
| 1409 | { "P04", OPTION_PDP11_04, "same as ..." }, |
| 1410 | { "P05", OPTION_PDP11_05, "same as ..." }, |
| 1411 | { "P10", OPTION_PDP11_10, "same as ..." }, |
| 1412 | { "P15", OPTION_PDP11_15, "same as ..." }, |
| 1413 | { "P20", OPTION_PDP11_20, "same as ..." }, |
| 1414 | { "P21", OPTION_PDP11_21, "same as ..." }, |
| 1415 | { "P24", OPTION_PDP11_24, "same as ..." }, |
| 1416 | { "P34", OPTION_PDP11_34, "same as ..." }, |
| 1417 | { "P34a", OPTION_PDP11_34A, "same as ..." }, |
| 1418 | { "P40", OPTION_PDP11_40, "same as ..." }, |
| 1419 | { "P44", OPTION_PDP11_44, "same as ..." }, |
| 1420 | { "P45", OPTION_PDP11_45, "same as ..." }, |
| 1421 | { "P50", OPTION_PDP11_50, "same as ..." }, |
| 1422 | { "P53", OPTION_PDP11_53, "same as ..." }, |
| 1423 | { "P55", OPTION_PDP11_55, "same as ..." }, |
| 1424 | { "P60", OPTION_PDP11_60, "same as ..." }, |
| 1425 | { "P70", OPTION_PDP11_70, "same as ..." }, |
| 1426 | { "P73", OPTION_PDP11_73, "same as ..." }, |
| 1427 | { "P83", OPTION_PDP11_83, "same as ..." }, |
| 1428 | { "P84", OPTION_PDP11_84, "same as ..." }, |
| 1429 | { "P93", OPTION_PDP11_93, "same as ..." }, |
| 1430 | { "P94", OPTION_PDP11_94, "same as ..." }, |
| 1431 | }; |
| 1432 | |
| 1433 | struct |
| 1434 | { |
| 1435 | const char *title; |
| 1436 | struct options *opts; |
| 1437 | int num; |
| 1438 | } all_opts[] = |
| 1439 | { |
| 1440 | { "PDP-11 instruction set extentions", |
| 1441 | extension_opts, |
| 1442 | sizeof extension_opts / sizeof extension_opts[0] }, |
| 1443 | { "PDP-11 CPU model options", |
| 1444 | cpu_opts, |
| 1445 | sizeof cpu_opts / sizeof cpu_opts[0] }, |
| 1446 | { "PDP-11 machine model options", |
| 1447 | model_opts, |
| 1448 | sizeof model_opts / sizeof model_opts[0] }, |
| 1449 | }; |
| 1450 | |
| 1451 | int |
| 1452 | parse_match (char *arg, char *pattern) |
| 1453 | { |
| 1454 | int yes = 1; |
| 1455 | |
| 1456 | while (*pattern) |
| 1457 | { |
| 1458 | switch (*pattern++) |
| 1459 | { |
| 1460 | case 'N': |
| 1461 | if (strncmp (arg, "no-") == 0) |
| 1462 | { |
| 1463 | yes = 0; |
| 1464 | arg += 3; |
| 1465 | } |
| 1466 | break; |
| 1467 | |
| 1468 | case 'K': |
| 1469 | if (arg[0] == 'k') |
| 1470 | arg++; |
| 1471 | break; |
| 1472 | |
| 1473 | case 'D': |
| 1474 | if (strncmp (arg, "kd", 2) == 0) |
| 1475 | arg +=2; |
| 1476 | break; |
| 1477 | |
| 1478 | case 'P': |
| 1479 | if (strncmp (arg, "pdp-11/", 7) == 0) |
| 1480 | arg += 7; |
| 1481 | else if (strncmp (arg, "pdp11/", 6) == 0) |
| 1482 | arg += 6; |
| 1483 | else if (strncmp (arg, "11/", 3) == 0) |
| 1484 | arg += 3; |
| 1485 | break; |
| 1486 | |
| 1487 | case '_': |
| 1488 | if (arg[0] == "-") |
| 1489 | { |
| 1490 | if (*++arg == 0) |
| 1491 | return 0; |
| 1492 | } |
| 1493 | break; |
| 1494 | |
| 1495 | case '*': |
| 1496 | return 1; |
| 1497 | |
| 1498 | default: |
| 1499 | if (*arg++ != pattern[-1]) |
| 1500 | return 0; |
| 1501 | } |
| 1502 | } |
| 1503 | |
| 1504 | return arg[0] == 0; |
| 1505 | } |
| 1506 | |
| 1507 | int |
| 1508 | fprint_opt (stream, pattern) |
| 1509 | FILE *stream; |
| 1510 | const char *pattern; |
| 1511 | { |
| 1512 | int n; |
| 1513 | |
| 1514 | while (*pattern) |
| 1515 | { |
| 1516 | switch (*pattern++) |
| 1517 | { |
| 1518 | case 'N': |
| 1519 | n += fprintf (stream, "(no-)"); |
| 1520 | break; |
| 1521 | |
| 1522 | case 'K': |
| 1523 | n += fprintf (stream, "k"); |
| 1524 | break; |
| 1525 | |
| 1526 | case 'P': |
| 1527 | n += fprintf (stream "11/"); |
| 1528 | break; |
| 1529 | |
| 1530 | case 'D': |
| 1531 | case '_': |
| 1532 | case '*': |
| 1533 | break; |
| 1534 | |
| 1535 | default: |
| 1536 | fputc (pattern[-1], stream); |
| 1537 | n++; |
| 1538 | } |
| 1539 | } |
| 1540 | |
| 1541 | return n; |
| 1542 | } |
| 1543 | |
| 1544 | int |
| 1545 | parse_option (char *arg) |
| 1546 | { |
| 1547 | int i, j; |
| 1548 | |
| 1549 | for (i = 0; i < sizeof all_opts / sizeof all_opts[0]; i++) |
| 1550 | { |
| 1551 | for (j = 0; j < all_opts[i].num; j++) |
| 1552 | { |
| 1553 | if (parse_match (arg, all_opts[i].opts[j].pattern)) |
| 1554 | { |
| 1555 | set_option (all_opts[i].opts[j].opt); |
| 1556 | return 1; |
| 1557 | } |
| 1558 | } |
| 1559 | } |
| 1560 | |
| 1561 | return 0; |
| 1562 | } |
| 1563 | |
| 1564 | static void |
| 1565 | fprint_space (stream, n) |
| 1566 | FILE *stream; |
| 1567 | int n; |
| 1568 | { |
| 1569 | while (n--) |
| 1570 | fputc (' ', stream); |
| 1571 | } |
| 1572 | |
| 1573 | void |
| 1574 | md_show_usage (stream) |
| 1575 | FILE *stream; |
| 1576 | { |
| 1577 | int i, j, n; |
| 1578 | |
| 1579 | for (i = 0; i < sizeof all_opts / sizeof all_opts[0]; i++) |
| 1580 | { |
| 1581 | fprintf (stream "\n%s:\n\n", all_opts[i].title); |
| 1582 | |
| 1583 | for (j = 0; j < all_opts[i].num; j++) |
| 1584 | { |
| 1585 | fprintf (stream, "-m"); |
| 1586 | n = fprintf_opt (stream, all_opts[i].opts[j].pattern); |
| 1587 | fprint_space (stream, 22 - n); |
| 1588 | fprintf (stream, "%s\n", all_opts[i].opts[j].description); |
| 1589 | } |
| 1590 | } |
| 1591 | } |
| 1592 | */ |
| 1593 | |
| 1594 | void |
| 1595 | md_show_usage (stream) |
| 1596 | FILE *stream; |
| 1597 | { |
| 1598 | fprintf (stream, "\ |
| 1599 | \n\ |
| 1600 | PDP-11 instruction set extentions:\n\ |
| 1601 | \n\ |
| 1602 | -m(no-)cis allow (disallow) commersial instruction set\n\ |
| 1603 | -m(no-)csm allow (disallow) CSM instruction\n\ |
| 1604 | -m(no-)eis allow (disallow) full extended instruction set\n\ |
| 1605 | -m(no-)fis allow (disallow) KEV11 floating-point instructions\n\ |
| 1606 | -m(no-)fpp allow (disallow) FP-11 floating-point instructions\n\ |
| 1607 | -m(no-)fpu allow (disallow) FP-11 floating-point instructions\n\ |
| 1608 | -m(no-)limited-eis allow (disallow) limited extended instruction set\n\ |
| 1609 | -m(no-)mfpt allow (disallow) processor type instruction\n\ |
| 1610 | -m(no-)multiproc allow (disallow) multiprocessor instructions\n\ |
| 1611 | -m(no-)mxps allow (disallow) processor status instructions\n\ |
| 1612 | -m(no-)spl allow (disallow) SPL instruction\n\ |
| 1613 | -m(no-)ucode allow (disallow) microcode instructions\n\ |
| 1614 | -mall-extensions allow all instruction set extensions\n\ |
| 1615 | (this is the default)\n\ |
| 1616 | -mno-extentions disallow all instruction set extensions\n\ |
| 1617 | -pic generate position-indepenent code\n\ |
| 1618 | \n\ |
| 1619 | PDP-11 CPU model options:\n\ |
| 1620 | \n\ |
| 1621 | -mka11* KA11 CPU. base line instruction set only\n\ |
| 1622 | -mkb11* KB11 CPU. enable full EIS and SPL\n\ |
| 1623 | -mkd11a* KD11-A CPU. enable limited EIS\n\ |
| 1624 | -mkd11b* KD11-B CPU. base line instruction set only\n\ |
| 1625 | -mkd11d* KD11-D CPU. base line instruction set only\n\ |
| 1626 | -mkd11e* KD11-E CPU. enable full EIS, MTPS, and MFPS\n\ |
| 1627 | -mkd11f* KD11-F CPU. enable limited EIS, MTPS, and MFPS\n\ |
| 1628 | -mkd11h* KD11-H CPU. enable limited EIS, MTPS, and MFPS\n\ |
| 1629 | -mkd11q* KD11-Q CPU. enable limited EIS, MTPS, and MFPS\n\ |
| 1630 | -mkd11k* KD11-K CPU. enable full EIS, MTPS, MFPS, LDUB, MED,\n\ |
| 1631 | XFC, and MFPT\n\ |
| 1632 | -mkd11z* KD11-Z CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\ |
| 1633 | and CSM\n\ |
| 1634 | -mf11* F11 CPU. enable full EIS, MFPS, MTPS, and MFPT\n\ |
| 1635 | -mj11* J11 CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\ |
| 1636 | CSM, TSTSET, and WRTLCK\n\ |
| 1637 | -mt11* T11 CPU. enable limited EIS, MTPS, and MFPS\n\ |
| 1638 | \n\ |
| 1639 | PDP-11 machine model options:\n\ |
| 1640 | \n\ |
| 1641 | -m11/03 same as -mkd11f\n\ |
| 1642 | -m11/04 same as -mkd11d\n\ |
| 1643 | -m11/05 same as -mkd11b\n\ |
| 1644 | -m11/10 same as -mkd11b\n\ |
| 1645 | -m11/15 same as -mka11\n\ |
| 1646 | -m11/20 same as -mka11\n\ |
| 1647 | -m11/21 same as -mt11\n\ |
| 1648 | -m11/23 same as -mf11\n\ |
| 1649 | -m11/24 same as -mf11\n\ |
| 1650 | -m11/34 same as -mkd11e\n\ |
| 1651 | -m11/34a same as -mkd11e -mfpp\n\ |
| 1652 | -m11/35 same as -mkd11a\n\ |
| 1653 | -m11/40 same as -mkd11a\n\ |
| 1654 | -m11/44 same as -mkd11z\n\ |
| 1655 | -m11/45 same as -mkb11\n\ |
| 1656 | -m11/50 same as -mkb11\n\ |
| 1657 | -m11/53 same as -mj11\n\ |
| 1658 | -m11/55 same as -mkb11\n\ |
| 1659 | -m11/60 same as -mkd11k\n\ |
| 1660 | -m11/70 same as -mkb11\n\ |
| 1661 | -m11/73 same as -mj11\n\ |
| 1662 | -m11/83 same as -mj11\n\ |
| 1663 | -m11/84 same as -mj11\n\ |
| 1664 | -m11/93 same as -mj11\n\ |
| 1665 | -m11/94 same as -mj11\n\ |
| 1666 | "); |
| 1667 | } |
| 1668 | |
| 1669 | symbolS * |
| 1670 | md_undefined_symbol (name) |
| 1671 | char *name ATTRIBUTE_UNUSED; |
| 1672 | { |
| 1673 | return 0; |
| 1674 | } |
| 1675 | |
| 1676 | valueT |
| 1677 | md_section_align (segment, size) |
| 1678 | segT segment ATTRIBUTE_UNUSED; |
| 1679 | valueT size; |
| 1680 | { |
| 1681 | return (size + 1) & ~1; |
| 1682 | } |
| 1683 | |
| 1684 | long |
| 1685 | md_pcrel_from (fixP) |
| 1686 | fixS *fixP; |
| 1687 | { |
| 1688 | return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size; |
| 1689 | } |
| 1690 | |
| 1691 | /* Translate internal representation of relocation info to BFD target |
| 1692 | format. */ |
| 1693 | arelent * |
| 1694 | tc_gen_reloc (section, fixp) |
| 1695 | asection *section ATTRIBUTE_UNUSED; |
| 1696 | fixS *fixp; |
| 1697 | { |
| 1698 | arelent *reloc; |
| 1699 | bfd_reloc_code_real_type code; |
| 1700 | |
| 1701 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
| 1702 | |
| 1703 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 1704 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 1705 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 1706 | |
| 1707 | /* This is taken account for in md_apply_fix3(). */ |
| 1708 | reloc->addend = -symbol_get_bfdsym (fixp->fx_addsy)->section->vma; |
| 1709 | |
| 1710 | switch (fixp->fx_r_type) |
| 1711 | { |
| 1712 | case BFD_RELOC_16: |
| 1713 | if (fixp->fx_pcrel) |
| 1714 | code = BFD_RELOC_16_PCREL; |
| 1715 | else |
| 1716 | code = BFD_RELOC_16; |
| 1717 | break; |
| 1718 | |
| 1719 | case BFD_RELOC_16_PCREL: |
| 1720 | code = BFD_RELOC_16_PCREL; |
| 1721 | break; |
| 1722 | |
| 1723 | default: |
| 1724 | BAD_CASE (fixp->fx_r_type); |
| 1725 | return NULL; |
| 1726 | } |
| 1727 | |
| 1728 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); |
| 1729 | |
| 1730 | if (reloc->howto == NULL) |
| 1731 | { |
| 1732 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 1733 | "Can not represent %s relocation in this object file format", |
| 1734 | bfd_get_reloc_code_name (code)); |
| 1735 | return NULL; |
| 1736 | } |
| 1737 | |
| 1738 | return reloc; |
| 1739 | } |
| 1740 | |
| 1741 | void |
| 1742 | pseudo_bss (c) |
| 1743 | int c ATTRIBUTE_UNUSED; |
| 1744 | { |
| 1745 | int temp; |
| 1746 | |
| 1747 | temp = get_absolute_expression (); |
| 1748 | subseg_set (bss_section, temp); |
| 1749 | demand_empty_rest_of_line (); |
| 1750 | } |
| 1751 | |
| 1752 | void |
| 1753 | pseudo_even (c) |
| 1754 | int c ATTRIBUTE_UNUSED; |
| 1755 | { |
| 1756 | int alignment = 1; /* 2^1 */ |
| 1757 | frag_align (alignment, 0, 1); |
| 1758 | record_alignment (now_seg, alignment); |
| 1759 | } |
| 1760 | |
| 1761 | /* end of tc-pdp11.c */ |