| 1 | /* tc-h8500.c -- Assemble code for the Hitachi H8/500 |
| 2 | Copyright 1993, 1994, 1995, 1998, 2000, 2001, 2002 |
| 3 | Free Software Foundation, Inc. |
| 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 | /* Written By Steve Chamberlain <sac@cygnus.com>. */ |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include "as.h" |
| 26 | #include "bfd.h" |
| 27 | #include "subsegs.h" |
| 28 | #define DEFINE_TABLE |
| 29 | #define ASSEMBLER_TABLE |
| 30 | #include "opcodes/h8500-opc.h" |
| 31 | #include "safe-ctype.h" |
| 32 | |
| 33 | const char comment_chars[] = "!"; |
| 34 | const char line_separator_chars[] = ";"; |
| 35 | const char line_comment_chars[] = "!#"; |
| 36 | |
| 37 | /* This table describes all the machine specific pseudo-ops the assembler |
| 38 | has to support. The fields are: |
| 39 | pseudo-op name without dot |
| 40 | function to call to execute this pseudo-op |
| 41 | Integer arg to pass to the function |
| 42 | */ |
| 43 | |
| 44 | const pseudo_typeS md_pseudo_table[] = |
| 45 | { |
| 46 | {"int", cons, 2}, |
| 47 | {"data.b", cons, 1}, |
| 48 | {"data.w", cons, 2}, |
| 49 | {"data.l", cons, 4}, |
| 50 | {"form", listing_psize, 0}, |
| 51 | {"heading", listing_title, 0}, |
| 52 | {"import", s_ignore, 0}, |
| 53 | {"page", listing_eject, 0}, |
| 54 | {"program", s_ignore, 0}, |
| 55 | {0, 0, 0} |
| 56 | }; |
| 57 | |
| 58 | const int md_reloc_size; |
| 59 | |
| 60 | const char EXP_CHARS[] = "eE"; |
| 61 | |
| 62 | /* Chars that mean this number is a floating point constant */ |
| 63 | /* As in 0f12.456 */ |
| 64 | /* or 0d1.2345e12 */ |
| 65 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
| 66 | |
| 67 | #define C(a,b) ENCODE_RELAX(a,b) |
| 68 | #define ENCODE_RELAX(what,length) (((what) << 2) + (length)) |
| 69 | |
| 70 | #define GET_WHAT(x) ((x>>2)) |
| 71 | |
| 72 | #define BYTE_DISP 1 |
| 73 | #define WORD_DISP 2 |
| 74 | #define UNDEF_BYTE_DISP 0 |
| 75 | #define UNDEF_WORD_DISP 3 |
| 76 | |
| 77 | #define BRANCH 1 |
| 78 | #define SCB_F 2 |
| 79 | #define SCB_TST 3 |
| 80 | #define END 4 |
| 81 | |
| 82 | #define BYTE_F 127 |
| 83 | #define BYTE_B -126 |
| 84 | #define WORD_F 32767 |
| 85 | #define WORD_B 32768 |
| 86 | |
| 87 | relax_typeS md_relax_table[C (END, 0)] = { |
| 88 | { 0, 0, 0, 0 }, |
| 89 | { 0, 0, 0, 0 }, |
| 90 | { 0, 0, 0, 0 }, |
| 91 | { 0, 0, 0, 0 }, |
| 92 | |
| 93 | /* BRANCH */ |
| 94 | { 0, 0, 0, 0 }, |
| 95 | { BYTE_F, BYTE_B, 2, C (BRANCH, WORD_DISP) }, |
| 96 | { WORD_F, WORD_B, 3, 0 }, |
| 97 | { 0, 0, 3, 0 }, |
| 98 | |
| 99 | /* SCB_F */ |
| 100 | { 0, 0, 0, 0 }, |
| 101 | { BYTE_F, BYTE_B, 3, C (SCB_F, WORD_DISP) }, |
| 102 | { WORD_F, WORD_B, 8, 0 }, |
| 103 | { 0, 0, 8, 0 }, |
| 104 | |
| 105 | /* SCB_TST */ |
| 106 | { 0, 0, 0, 0 }, |
| 107 | { BYTE_F, BYTE_B, 3, C (SCB_TST, WORD_DISP) }, |
| 108 | { WORD_F, WORD_B, 10, 0 }, |
| 109 | { 0, 0, 10, 0 } |
| 110 | |
| 111 | }; |
| 112 | |
| 113 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ |
| 114 | |
| 115 | /* |
| 116 | This function is called once, at assembler startup time. This should |
| 117 | set up all the tables, etc. that the MD part of the assembler needs |
| 118 | */ |
| 119 | |
| 120 | void |
| 121 | md_begin () |
| 122 | { |
| 123 | const h8500_opcode_info *opcode; |
| 124 | char prev_buffer[100]; |
| 125 | int idx = 0; |
| 126 | |
| 127 | opcode_hash_control = hash_new (); |
| 128 | prev_buffer[0] = 0; |
| 129 | |
| 130 | /* Insert unique names into hash table */ |
| 131 | for (opcode = h8500_table; opcode->name; opcode++) |
| 132 | { |
| 133 | if (idx != opcode->idx) |
| 134 | { |
| 135 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); |
| 136 | idx++; |
| 137 | } |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | static int rn; /* register number used by RN */ |
| 142 | static int rs; /* register number used by RS */ |
| 143 | static int rd; /* register number used by RD */ |
| 144 | static int crb; /* byte size cr */ |
| 145 | static int crw; /* word sized cr */ |
| 146 | static int cr; /* unknown size cr */ |
| 147 | |
| 148 | static expressionS displacement;/* displacement expression */ |
| 149 | |
| 150 | static int immediate_inpage; |
| 151 | static expressionS immediate; /* immediate expression */ |
| 152 | |
| 153 | static expressionS absolute; /* absolute expression */ |
| 154 | |
| 155 | typedef struct |
| 156 | { |
| 157 | int type; |
| 158 | int reg; |
| 159 | expressionS exp; |
| 160 | int page; |
| 161 | } |
| 162 | |
| 163 | h8500_operand_info; |
| 164 | |
| 165 | /* Try to parse a reg name. Return the number of chars consumed. */ |
| 166 | |
| 167 | static int parse_reg PARAMS ((char *, int *, int *)); |
| 168 | |
| 169 | static int |
| 170 | parse_reg (src, mode, reg) |
| 171 | char *src; |
| 172 | int *mode; |
| 173 | int *reg; |
| 174 | { |
| 175 | char *end; |
| 176 | int len; |
| 177 | |
| 178 | /* Cribbed from get_symbol_end(). */ |
| 179 | if (!is_name_beginner (*src) || *src == '\001') |
| 180 | return 0; |
| 181 | end = src + 1; |
| 182 | while (is_part_of_name (*end) || *end == '\001') |
| 183 | end++; |
| 184 | len = end - src; |
| 185 | |
| 186 | if (len == 2 && src[0] == 'r') |
| 187 | { |
| 188 | if (src[1] >= '0' && src[1] <= '7') |
| 189 | { |
| 190 | *mode = RN; |
| 191 | *reg = (src[1] - '0'); |
| 192 | return len; |
| 193 | } |
| 194 | } |
| 195 | if (len == 2 && src[0] == 's' && src[1] == 'p') |
| 196 | { |
| 197 | *mode = RN; |
| 198 | *reg = 7; |
| 199 | return len; |
| 200 | } |
| 201 | if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r') |
| 202 | { |
| 203 | *mode = CRB; |
| 204 | *reg = 1; |
| 205 | return len; |
| 206 | } |
| 207 | if (len == 2 && src[0] == 's' && src[1] == 'r') |
| 208 | { |
| 209 | *mode = CRW; |
| 210 | *reg = 0; |
| 211 | return len; |
| 212 | } |
| 213 | if (len == 2 && src[0] == 'b' && src[1] == 'r') |
| 214 | { |
| 215 | *mode = CRB; |
| 216 | *reg = 3; |
| 217 | return len; |
| 218 | } |
| 219 | if (len == 2 && src[0] == 'e' && src[1] == 'p') |
| 220 | { |
| 221 | *mode = CRB; |
| 222 | *reg = 4; |
| 223 | return len; |
| 224 | } |
| 225 | if (len == 2 && src[0] == 'd' && src[1] == 'p') |
| 226 | { |
| 227 | *mode = CRB; |
| 228 | *reg = 5; |
| 229 | return len; |
| 230 | } |
| 231 | if (len == 2 && src[0] == 't' && src[1] == 'p') |
| 232 | { |
| 233 | *mode = CRB; |
| 234 | *reg = 7; |
| 235 | return len; |
| 236 | } |
| 237 | if (len == 2 && src[0] == 'f' && src[1] == 'p') |
| 238 | { |
| 239 | *mode = RN; |
| 240 | *reg = 6; |
| 241 | return len; |
| 242 | } |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | static char *parse_exp PARAMS ((char *, expressionS *, int *)); |
| 247 | |
| 248 | static char * |
| 249 | parse_exp (s, op, page) |
| 250 | char *s; |
| 251 | expressionS *op; |
| 252 | int *page; |
| 253 | { |
| 254 | char *save; |
| 255 | char *new; |
| 256 | |
| 257 | save = input_line_pointer; |
| 258 | |
| 259 | *page = 0; |
| 260 | if (s[0] == '%') |
| 261 | { |
| 262 | if (s[1] == 'p' && s[2] == 'a' && s[3] == 'g' && s[4] == 'e') |
| 263 | { |
| 264 | s += 5; |
| 265 | *page = 'p'; |
| 266 | } |
| 267 | if (s[1] == 'h' && s[2] == 'i' && s[3] == '1' && s[4] == '6') |
| 268 | { |
| 269 | s += 5; |
| 270 | *page = 'h'; |
| 271 | } |
| 272 | else if (s[1] == 'o' && s[2] == 'f' && s[3] == 'f') |
| 273 | { |
| 274 | s += 4; |
| 275 | *page = 'o'; |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | input_line_pointer = s; |
| 280 | |
| 281 | expression (op); |
| 282 | if (op->X_op == O_absent) |
| 283 | as_bad (_("missing operand")); |
| 284 | new = input_line_pointer; |
| 285 | input_line_pointer = save; |
| 286 | return new; |
| 287 | } |
| 288 | |
| 289 | typedef enum |
| 290 | { |
| 291 | exp_signed, exp_unsigned, exp_sandu |
| 292 | } sign_type; |
| 293 | |
| 294 | static char *skip_colonthing |
| 295 | PARAMS ((sign_type, char *, h8500_operand_info *, int, int, int, int)); |
| 296 | |
| 297 | static char * |
| 298 | skip_colonthing (sign, ptr, exp, def, size8, size16, size24) |
| 299 | sign_type sign; |
| 300 | char *ptr; |
| 301 | h8500_operand_info *exp; |
| 302 | int def; |
| 303 | int size8; |
| 304 | int size16; |
| 305 | int size24; |
| 306 | { |
| 307 | ptr = parse_exp (ptr, &exp->exp, &exp->page); |
| 308 | if (*ptr == ':') |
| 309 | { |
| 310 | ptr++; |
| 311 | if (*ptr == '8') |
| 312 | { |
| 313 | ptr++; |
| 314 | exp->type = size8; |
| 315 | } |
| 316 | else if (ptr[0] == '1' && ptr[1] == '6') |
| 317 | { |
| 318 | ptr += 2; |
| 319 | exp->type = size16; |
| 320 | } |
| 321 | else if (ptr[0] == '2' && ptr[1] == '4') |
| 322 | { |
| 323 | if (!size24) |
| 324 | { |
| 325 | as_bad (_(":24 not valid for this opcode")); |
| 326 | } |
| 327 | ptr += 2; |
| 328 | exp->type = size24; |
| 329 | } |
| 330 | else |
| 331 | { |
| 332 | as_bad (_("expect :8,:16 or :24")); |
| 333 | exp->type = size16; |
| 334 | } |
| 335 | } |
| 336 | else |
| 337 | { |
| 338 | if (exp->page == 'p') |
| 339 | { |
| 340 | exp->type = IMM8; |
| 341 | } |
| 342 | else if (exp->page == 'h') |
| 343 | { |
| 344 | exp->type = IMM16; |
| 345 | } |
| 346 | else |
| 347 | { |
| 348 | /* Let's work out the size from the context */ |
| 349 | int n = exp->exp.X_add_number; |
| 350 | if (size8 |
| 351 | && exp->exp.X_op == O_constant |
| 352 | && ((sign == exp_signed && (n >= -128 && n <= 127)) |
| 353 | || (sign == exp_unsigned && (n >= 0 && (n <= 255))) |
| 354 | || (sign == exp_sandu && (n >= -128 && (n <= 255))))) |
| 355 | { |
| 356 | exp->type = size8; |
| 357 | } |
| 358 | else |
| 359 | { |
| 360 | exp->type = def; |
| 361 | } |
| 362 | } |
| 363 | } |
| 364 | return ptr; |
| 365 | } |
| 366 | |
| 367 | static int parse_reglist PARAMS ((char *, h8500_operand_info *)); |
| 368 | |
| 369 | static int |
| 370 | parse_reglist (src, op) |
| 371 | char *src; |
| 372 | h8500_operand_info *op; |
| 373 | { |
| 374 | int mode; |
| 375 | int rn; |
| 376 | int mask = 0; |
| 377 | int rm; |
| 378 | int idx = 1; /* skip ( */ |
| 379 | |
| 380 | while (src[idx] && src[idx] != ')') |
| 381 | { |
| 382 | int done = parse_reg (src + idx, &mode, &rn); |
| 383 | |
| 384 | if (done) |
| 385 | { |
| 386 | idx += done; |
| 387 | mask |= 1 << rn; |
| 388 | } |
| 389 | else |
| 390 | { |
| 391 | as_bad (_("syntax error in reg list")); |
| 392 | return 0; |
| 393 | } |
| 394 | if (src[idx] == '-') |
| 395 | { |
| 396 | idx++; |
| 397 | done = parse_reg (src + idx, &mode, &rm); |
| 398 | if (done) |
| 399 | { |
| 400 | idx += done; |
| 401 | while (rn <= rm) |
| 402 | { |
| 403 | mask |= 1 << rn; |
| 404 | rn++; |
| 405 | } |
| 406 | } |
| 407 | else |
| 408 | { |
| 409 | as_bad (_("missing final register in range")); |
| 410 | } |
| 411 | } |
| 412 | if (src[idx] == ',') |
| 413 | idx++; |
| 414 | } |
| 415 | idx++; |
| 416 | op->exp.X_add_symbol = 0; |
| 417 | op->exp.X_op_symbol = 0; |
| 418 | op->exp.X_add_number = mask; |
| 419 | op->exp.X_op = O_constant; |
| 420 | op->exp.X_unsigned = 1; |
| 421 | op->type = IMM8; |
| 422 | return idx; |
| 423 | |
| 424 | } |
| 425 | |
| 426 | /* The many forms of operand: |
| 427 | |
| 428 | Rn Register direct |
| 429 | @Rn Register indirect |
| 430 | @(disp[:size], Rn) Register indirect with displacement |
| 431 | @Rn+ |
| 432 | @-Rn |
| 433 | @aa[:size] absolute |
| 434 | #xx[:size] immediate data |
| 435 | |
| 436 | */ |
| 437 | |
| 438 | static void get_operand PARAMS ((char **, h8500_operand_info *, char)); |
| 439 | |
| 440 | static void |
| 441 | get_operand (ptr, op, ispage) |
| 442 | char **ptr; |
| 443 | h8500_operand_info *op; |
| 444 | char ispage; |
| 445 | { |
| 446 | char *src = *ptr; |
| 447 | int mode; |
| 448 | unsigned int num; |
| 449 | unsigned int len; |
| 450 | op->page = 0; |
| 451 | if (src[0] == '(' && src[1] == 'r') |
| 452 | { |
| 453 | /* This is a register list */ |
| 454 | *ptr = src + parse_reglist (src, op); |
| 455 | return; |
| 456 | } |
| 457 | |
| 458 | len = parse_reg (src, &op->type, &op->reg); |
| 459 | |
| 460 | if (len) |
| 461 | { |
| 462 | *ptr = src + len; |
| 463 | return; |
| 464 | } |
| 465 | |
| 466 | if (*src == '@') |
| 467 | { |
| 468 | src++; |
| 469 | if (*src == '-') |
| 470 | { |
| 471 | src++; |
| 472 | len = parse_reg (src, &mode, &num); |
| 473 | if (len == 0) |
| 474 | { |
| 475 | /* Oops, not a reg after all, must be ordinary exp */ |
| 476 | src--; |
| 477 | /* must be a symbol */ |
| 478 | *ptr = skip_colonthing (exp_unsigned, src, |
| 479 | op, ABS16, ABS8, ABS16, ABS24); |
| 480 | return; |
| 481 | } |
| 482 | |
| 483 | op->type = RNDEC; |
| 484 | op->reg = num; |
| 485 | *ptr = src + len; |
| 486 | return; |
| 487 | } |
| 488 | if (*src == '(') |
| 489 | { |
| 490 | /* Disp */ |
| 491 | src++; |
| 492 | |
| 493 | src = skip_colonthing (exp_signed, src, |
| 494 | op, RNIND_D16, RNIND_D8, RNIND_D16, 0); |
| 495 | |
| 496 | if (*src != ',') |
| 497 | { |
| 498 | as_bad (_("expected @(exp, Rn)")); |
| 499 | return; |
| 500 | } |
| 501 | src++; |
| 502 | len = parse_reg (src, &mode, &op->reg); |
| 503 | if (len == 0 || mode != RN) |
| 504 | { |
| 505 | as_bad (_("expected @(exp, Rn)")); |
| 506 | return; |
| 507 | } |
| 508 | src += len; |
| 509 | if (*src != ')') |
| 510 | { |
| 511 | as_bad (_("expected @(exp, Rn)")); |
| 512 | return; |
| 513 | } |
| 514 | *ptr = src + 1; |
| 515 | return; |
| 516 | } |
| 517 | len = parse_reg (src, &mode, &num); |
| 518 | |
| 519 | if (len) |
| 520 | { |
| 521 | src += len; |
| 522 | if (*src == '+') |
| 523 | { |
| 524 | src++; |
| 525 | if (mode != RN) |
| 526 | { |
| 527 | as_bad (_("@Rn+ needs word register")); |
| 528 | return; |
| 529 | } |
| 530 | op->type = RNINC; |
| 531 | op->reg = num; |
| 532 | *ptr = src; |
| 533 | return; |
| 534 | } |
| 535 | if (mode != RN) |
| 536 | { |
| 537 | as_bad (_("@Rn needs word register")); |
| 538 | return; |
| 539 | } |
| 540 | op->type = RNIND; |
| 541 | op->reg = num; |
| 542 | *ptr = src; |
| 543 | return; |
| 544 | } |
| 545 | else |
| 546 | { |
| 547 | /* must be a symbol */ |
| 548 | *ptr = |
| 549 | skip_colonthing (exp_unsigned, src, op, |
| 550 | ispage ? ABS24 : ABS16, ABS8, ABS16, ABS24); |
| 551 | return; |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | if (*src == '#') |
| 556 | { |
| 557 | src++; |
| 558 | *ptr = skip_colonthing (exp_sandu, src, op, IMM16, IMM8, IMM16, ABS24); |
| 559 | return; |
| 560 | } |
| 561 | else |
| 562 | { |
| 563 | *ptr = skip_colonthing (exp_signed, src, op, |
| 564 | ispage ? ABS24 : PCREL8, PCREL8, PCREL16, ABS24); |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | static char *get_operands |
| 569 | PARAMS ((h8500_opcode_info *, char *, h8500_operand_info *)); |
| 570 | |
| 571 | static char * |
| 572 | get_operands (info, args, operand) |
| 573 | h8500_opcode_info *info; |
| 574 | char *args; |
| 575 | h8500_operand_info *operand; |
| 576 | { |
| 577 | char *ptr = args; |
| 578 | |
| 579 | switch (info->nargs) |
| 580 | { |
| 581 | case 0: |
| 582 | operand[0].type = 0; |
| 583 | operand[1].type = 0; |
| 584 | break; |
| 585 | |
| 586 | case 1: |
| 587 | ptr++; |
| 588 | get_operand (&ptr, operand + 0, info->name[0] == 'p'); |
| 589 | operand[1].type = 0; |
| 590 | break; |
| 591 | |
| 592 | case 2: |
| 593 | ptr++; |
| 594 | get_operand (&ptr, operand + 0, 0); |
| 595 | if (*ptr == ',') |
| 596 | ptr++; |
| 597 | get_operand (&ptr, operand + 1, 0); |
| 598 | break; |
| 599 | |
| 600 | default: |
| 601 | abort (); |
| 602 | } |
| 603 | |
| 604 | return ptr; |
| 605 | } |
| 606 | |
| 607 | /* Passed a pointer to a list of opcodes which use different |
| 608 | addressing modes, return the opcode which matches the opcodes |
| 609 | provided. */ |
| 610 | |
| 611 | int pcrel8; /* Set when we've seen a pcrel operand */ |
| 612 | |
| 613 | static h8500_opcode_info *get_specific |
| 614 | PARAMS ((h8500_opcode_info *, h8500_operand_info *)); |
| 615 | |
| 616 | static h8500_opcode_info * |
| 617 | get_specific (opcode, operands) |
| 618 | h8500_opcode_info *opcode; |
| 619 | h8500_operand_info *operands; |
| 620 | { |
| 621 | h8500_opcode_info *this_try = opcode; |
| 622 | int found = 0; |
| 623 | unsigned int noperands = opcode->nargs; |
| 624 | int this_index = opcode->idx; |
| 625 | |
| 626 | while (this_index == opcode->idx && !found) |
| 627 | { |
| 628 | unsigned int i; |
| 629 | |
| 630 | this_try = opcode++; |
| 631 | |
| 632 | /* look at both operands needed by the opcodes and provided by |
| 633 | the user*/ |
| 634 | for (i = 0; i < noperands; i++) |
| 635 | { |
| 636 | h8500_operand_info *user = operands + i; |
| 637 | |
| 638 | switch (this_try->arg_type[i]) |
| 639 | { |
| 640 | case FPIND_D8: |
| 641 | /* Opcode needs (disp:8,fp) */ |
| 642 | if (user->type == RNIND_D8 && user->reg == 6) |
| 643 | { |
| 644 | displacement = user->exp; |
| 645 | continue; |
| 646 | } |
| 647 | break; |
| 648 | case RDIND_D16: |
| 649 | if (user->type == RNIND_D16) |
| 650 | { |
| 651 | displacement = user->exp; |
| 652 | rd = user->reg; |
| 653 | continue; |
| 654 | } |
| 655 | break; |
| 656 | case RDIND_D8: |
| 657 | if (user->type == RNIND_D8) |
| 658 | { |
| 659 | displacement = user->exp; |
| 660 | rd = user->reg; |
| 661 | continue; |
| 662 | } |
| 663 | break; |
| 664 | case RNIND_D16: |
| 665 | case RNIND_D8: |
| 666 | if (user->type == this_try->arg_type[i]) |
| 667 | { |
| 668 | displacement = user->exp; |
| 669 | rn = user->reg; |
| 670 | continue; |
| 671 | } |
| 672 | break; |
| 673 | |
| 674 | case SPDEC: |
| 675 | if (user->type == RNDEC && user->reg == 7) |
| 676 | { |
| 677 | continue; |
| 678 | } |
| 679 | break; |
| 680 | case SPINC: |
| 681 | if (user->type == RNINC && user->reg == 7) |
| 682 | { |
| 683 | continue; |
| 684 | } |
| 685 | break; |
| 686 | case ABS16: |
| 687 | if (user->type == ABS16) |
| 688 | { |
| 689 | absolute = user->exp; |
| 690 | continue; |
| 691 | } |
| 692 | break; |
| 693 | case ABS8: |
| 694 | if (user->type == ABS8) |
| 695 | { |
| 696 | absolute = user->exp; |
| 697 | continue; |
| 698 | } |
| 699 | break; |
| 700 | case ABS24: |
| 701 | if (user->type == ABS24) |
| 702 | { |
| 703 | absolute = user->exp; |
| 704 | continue; |
| 705 | } |
| 706 | break; |
| 707 | |
| 708 | case CRB: |
| 709 | if ((user->type == CRB || user->type == CR) && user->reg != 0) |
| 710 | { |
| 711 | crb = user->reg; |
| 712 | continue; |
| 713 | } |
| 714 | break; |
| 715 | case CRW: |
| 716 | if ((user->type == CRW || user->type == CR) && user->reg == 0) |
| 717 | { |
| 718 | crw = user->reg; |
| 719 | continue; |
| 720 | } |
| 721 | break; |
| 722 | case DISP16: |
| 723 | if (user->type == DISP16) |
| 724 | { |
| 725 | displacement = user->exp; |
| 726 | continue; |
| 727 | } |
| 728 | break; |
| 729 | case DISP8: |
| 730 | if (user->type == DISP8) |
| 731 | { |
| 732 | displacement = user->exp; |
| 733 | continue; |
| 734 | } |
| 735 | break; |
| 736 | case FP: |
| 737 | if (user->type == RN && user->reg == 6) |
| 738 | { |
| 739 | continue; |
| 740 | } |
| 741 | break; |
| 742 | case PCREL16: |
| 743 | if (user->type == PCREL16) |
| 744 | { |
| 745 | displacement = user->exp; |
| 746 | continue; |
| 747 | } |
| 748 | break; |
| 749 | case PCREL8: |
| 750 | if (user->type == PCREL8) |
| 751 | { |
| 752 | displacement = user->exp; |
| 753 | pcrel8 = 1; |
| 754 | continue; |
| 755 | } |
| 756 | break; |
| 757 | |
| 758 | case IMM16: |
| 759 | if (user->type == IMM16 |
| 760 | || user->type == IMM8) |
| 761 | { |
| 762 | immediate_inpage = user->page; |
| 763 | immediate = user->exp; |
| 764 | continue; |
| 765 | } |
| 766 | break; |
| 767 | case RLIST: |
| 768 | case IMM8: |
| 769 | if (user->type == IMM8) |
| 770 | { |
| 771 | immediate_inpage = user->page; |
| 772 | immediate = user->exp; |
| 773 | continue; |
| 774 | } |
| 775 | break; |
| 776 | case IMM4: |
| 777 | if (user->type == IMM8) |
| 778 | { |
| 779 | immediate_inpage = user->page; |
| 780 | immediate = user->exp; |
| 781 | continue; |
| 782 | } |
| 783 | break; |
| 784 | case QIM: |
| 785 | if (user->type == IMM8 |
| 786 | && user->exp.X_op == O_constant |
| 787 | && |
| 788 | (user->exp.X_add_number == -2 |
| 789 | || user->exp.X_add_number == -1 |
| 790 | || user->exp.X_add_number == 1 |
| 791 | || user->exp.X_add_number == 2)) |
| 792 | { |
| 793 | immediate_inpage = user->page; |
| 794 | immediate = user->exp; |
| 795 | continue; |
| 796 | } |
| 797 | break; |
| 798 | case RD: |
| 799 | if (user->type == RN) |
| 800 | { |
| 801 | rd = user->reg; |
| 802 | continue; |
| 803 | } |
| 804 | break; |
| 805 | case RS: |
| 806 | if (user->type == RN) |
| 807 | { |
| 808 | rs = user->reg; |
| 809 | continue; |
| 810 | } |
| 811 | break; |
| 812 | case RDIND: |
| 813 | if (user->type == RNIND) |
| 814 | { |
| 815 | rd = user->reg; |
| 816 | continue; |
| 817 | |
| 818 | } |
| 819 | break; |
| 820 | case RNINC: |
| 821 | case RNIND: |
| 822 | case RNDEC: |
| 823 | case RN: |
| 824 | |
| 825 | if (user->type == this_try->arg_type[i]) |
| 826 | { |
| 827 | rn = user->reg; |
| 828 | continue; |
| 829 | } |
| 830 | break; |
| 831 | case SP: |
| 832 | if (user->type == RN && user->reg == 7) |
| 833 | { |
| 834 | continue; |
| 835 | } |
| 836 | break; |
| 837 | default: |
| 838 | printf (_("unhandled %d\n"), this_try->arg_type[i]); |
| 839 | break; |
| 840 | } |
| 841 | |
| 842 | /* If we get here this didn't work out */ |
| 843 | goto fail; |
| 844 | } |
| 845 | found = 1; |
| 846 | fail:; |
| 847 | |
| 848 | } |
| 849 | |
| 850 | if (found) |
| 851 | return this_try; |
| 852 | else |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | static int check PARAMS ((expressionS *, int, int)); |
| 857 | |
| 858 | static int |
| 859 | check (operand, low, high) |
| 860 | expressionS *operand; |
| 861 | int low; |
| 862 | int high; |
| 863 | { |
| 864 | if (operand->X_op != O_constant |
| 865 | || operand->X_add_number < low |
| 866 | || operand->X_add_number > high) |
| 867 | { |
| 868 | as_bad (_("operand must be absolute in range %d..%d"), low, high); |
| 869 | } |
| 870 | return operand->X_add_number; |
| 871 | } |
| 872 | |
| 873 | static void insert PARAMS ((char *, int, expressionS *, int, int)); |
| 874 | |
| 875 | static void |
| 876 | insert (output, index, exp, reloc, pcrel) |
| 877 | char *output; |
| 878 | int index; |
| 879 | expressionS *exp; |
| 880 | int reloc; |
| 881 | int pcrel; |
| 882 | { |
| 883 | fix_new_exp (frag_now, |
| 884 | output - frag_now->fr_literal + index, |
| 885 | 4, /* always say size is 4, but we know better */ |
| 886 | exp, |
| 887 | pcrel, |
| 888 | reloc); |
| 889 | } |
| 890 | |
| 891 | static void build_relaxable_instruction |
| 892 | PARAMS ((h8500_opcode_info *, h8500_operand_info *)); |
| 893 | |
| 894 | static void |
| 895 | build_relaxable_instruction (opcode, operand) |
| 896 | h8500_opcode_info *opcode; |
| 897 | h8500_operand_info *operand ATTRIBUTE_UNUSED; |
| 898 | { |
| 899 | /* All relaxable instructions start life as two bytes but can become |
| 900 | three bytes long if a lonely branch and up to 9 bytes if long |
| 901 | scb. */ |
| 902 | char *p; |
| 903 | int len; |
| 904 | int type; |
| 905 | |
| 906 | if (opcode->bytes[0].contents == 0x01) |
| 907 | { |
| 908 | type = SCB_F; |
| 909 | } |
| 910 | else if (opcode->bytes[0].contents == 0x06 |
| 911 | || opcode->bytes[0].contents == 0x07) |
| 912 | { |
| 913 | type = SCB_TST; |
| 914 | } |
| 915 | else |
| 916 | { |
| 917 | type = BRANCH; |
| 918 | } |
| 919 | |
| 920 | p = frag_var (rs_machine_dependent, |
| 921 | md_relax_table[C (type, WORD_DISP)].rlx_length, |
| 922 | len = md_relax_table[C (type, BYTE_DISP)].rlx_length, |
| 923 | C (type, UNDEF_BYTE_DISP), |
| 924 | displacement.X_add_symbol, |
| 925 | displacement.X_add_number, |
| 926 | 0); |
| 927 | |
| 928 | p[0] = opcode->bytes[0].contents; |
| 929 | if (type != BRANCH) |
| 930 | { |
| 931 | p[1] = opcode->bytes[1].contents | rs; |
| 932 | } |
| 933 | } |
| 934 | |
| 935 | /* Now we know what sort of opcodes it is, let's build the bytes. */ |
| 936 | |
| 937 | static void build_bytes PARAMS ((h8500_opcode_info *, h8500_operand_info *)); |
| 938 | |
| 939 | static void |
| 940 | build_bytes (opcode, operand) |
| 941 | h8500_opcode_info *opcode; |
| 942 | h8500_operand_info *operand; |
| 943 | { |
| 944 | int index; |
| 945 | |
| 946 | if (pcrel8) |
| 947 | { |
| 948 | pcrel8 = 0; |
| 949 | build_relaxable_instruction (opcode, operand); |
| 950 | } |
| 951 | else |
| 952 | { |
| 953 | char *output = frag_more (opcode->length); |
| 954 | |
| 955 | memset (output, 0, opcode->length); |
| 956 | for (index = 0; index < opcode->length; index++) |
| 957 | { |
| 958 | output[index] = opcode->bytes[index].contents; |
| 959 | |
| 960 | switch (opcode->bytes[index].insert) |
| 961 | { |
| 962 | default: |
| 963 | printf (_("failed for %d\n"), opcode->bytes[index].insert); |
| 964 | break; |
| 965 | case 0: |
| 966 | break; |
| 967 | case RN: |
| 968 | output[index] |= rn; |
| 969 | break; |
| 970 | case RD: |
| 971 | case RDIND: |
| 972 | output[index] |= rd; |
| 973 | break; |
| 974 | case RS: |
| 975 | output[index] |= rs; |
| 976 | break; |
| 977 | case DISP16: |
| 978 | insert (output, index, &displacement, R_H8500_IMM16, 0); |
| 979 | index++; |
| 980 | break; |
| 981 | case DISP8: |
| 982 | case FPIND_D8: |
| 983 | insert (output, index, &displacement, R_H8500_IMM8, 0); |
| 984 | break; |
| 985 | case IMM16: |
| 986 | { |
| 987 | int p; |
| 988 | |
| 989 | switch (immediate_inpage) |
| 990 | { |
| 991 | case 'p': |
| 992 | p = R_H8500_HIGH16; |
| 993 | break; |
| 994 | case 'h': |
| 995 | p = R_H8500_HIGH16; |
| 996 | break; |
| 997 | default: |
| 998 | p = R_H8500_IMM16; |
| 999 | break; |
| 1000 | } |
| 1001 | insert (output, index, &immediate, p, 0); |
| 1002 | } |
| 1003 | index++; |
| 1004 | break; |
| 1005 | case RLIST: |
| 1006 | case IMM8: |
| 1007 | if (immediate_inpage) |
| 1008 | insert (output, index, &immediate, R_H8500_HIGH8, 0); |
| 1009 | else |
| 1010 | insert (output, index, &immediate, R_H8500_IMM8, 0); |
| 1011 | break; |
| 1012 | case PCREL16: |
| 1013 | insert (output, index, &displacement, R_H8500_PCREL16, 1); |
| 1014 | index++; |
| 1015 | break; |
| 1016 | case PCREL8: |
| 1017 | insert (output, index, &displacement, R_H8500_PCREL8, 1); |
| 1018 | break; |
| 1019 | case IMM4: |
| 1020 | output[index] |= check (&immediate, 0, 15); |
| 1021 | break; |
| 1022 | case CR: |
| 1023 | output[index] |= cr; |
| 1024 | if (cr == 0) |
| 1025 | output[0] |= 0x8; |
| 1026 | else |
| 1027 | output[0] &= ~0x8; |
| 1028 | break; |
| 1029 | case CRB: |
| 1030 | output[index] |= crb; |
| 1031 | output[0] &= ~0x8; |
| 1032 | break; |
| 1033 | case CRW: |
| 1034 | output[index] |= crw; |
| 1035 | output[0] |= 0x8; |
| 1036 | break; |
| 1037 | case ABS24: |
| 1038 | insert (output, index, &absolute, R_H8500_IMM24, 0); |
| 1039 | index += 2; |
| 1040 | break; |
| 1041 | case ABS16: |
| 1042 | insert (output, index, &absolute, R_H8500_IMM16, 0); |
| 1043 | index++; |
| 1044 | break; |
| 1045 | case ABS8: |
| 1046 | insert (output, index, &absolute, R_H8500_IMM8, 0); |
| 1047 | break; |
| 1048 | case QIM: |
| 1049 | switch (immediate.X_add_number) |
| 1050 | { |
| 1051 | case -2: |
| 1052 | output[index] |= 0x5; |
| 1053 | break; |
| 1054 | case -1: |
| 1055 | output[index] |= 0x4; |
| 1056 | break; |
| 1057 | case 1: |
| 1058 | output[index] |= 0; |
| 1059 | break; |
| 1060 | case 2: |
| 1061 | output[index] |= 1; |
| 1062 | break; |
| 1063 | } |
| 1064 | break; |
| 1065 | } |
| 1066 | } |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | /* This is the guts of the machine-dependent assembler. STR points to |
| 1071 | a machine dependent instruction. This function is supposed to emit |
| 1072 | the frags/bytes it assembles to. */ |
| 1073 | |
| 1074 | void |
| 1075 | md_assemble (str) |
| 1076 | char *str; |
| 1077 | { |
| 1078 | char *op_start; |
| 1079 | char *op_end; |
| 1080 | h8500_operand_info operand[2]; |
| 1081 | h8500_opcode_info *opcode; |
| 1082 | h8500_opcode_info *prev_opcode; |
| 1083 | char name[11]; |
| 1084 | |
| 1085 | int nlen = 0; |
| 1086 | |
| 1087 | /* Drop leading whitespace. */ |
| 1088 | while (*str == ' ') |
| 1089 | str++; |
| 1090 | |
| 1091 | /* Find the op code end. */ |
| 1092 | for (op_start = op_end = str; |
| 1093 | !is_end_of_line[(unsigned char) *op_end] && *op_end != ' '; |
| 1094 | op_end++) |
| 1095 | { |
| 1096 | if ( /**op_end != '.' |
| 1097 | && *op_end != ':' |
| 1098 | && */ nlen < 10) |
| 1099 | { |
| 1100 | name[nlen++] = *op_end; |
| 1101 | } |
| 1102 | } |
| 1103 | name[nlen] = 0; |
| 1104 | |
| 1105 | if (op_end == op_start) |
| 1106 | as_bad (_("can't find opcode ")); |
| 1107 | |
| 1108 | opcode = (h8500_opcode_info *) hash_find (opcode_hash_control, name); |
| 1109 | |
| 1110 | if (opcode == NULL) |
| 1111 | { |
| 1112 | as_bad (_("unknown opcode")); |
| 1113 | return; |
| 1114 | } |
| 1115 | |
| 1116 | get_operands (opcode, op_end, operand); |
| 1117 | prev_opcode = opcode; |
| 1118 | |
| 1119 | opcode = get_specific (opcode, operand); |
| 1120 | |
| 1121 | if (opcode == 0) |
| 1122 | { |
| 1123 | /* Couldn't find an opcode which matched the operands */ |
| 1124 | char *where = frag_more (2); |
| 1125 | |
| 1126 | where[0] = 0x0; |
| 1127 | where[1] = 0x0; |
| 1128 | as_bad (_("invalid operands for opcode")); |
| 1129 | return; |
| 1130 | } |
| 1131 | |
| 1132 | build_bytes (opcode, operand); |
| 1133 | } |
| 1134 | |
| 1135 | void |
| 1136 | tc_crawl_symbol_chain (headers) |
| 1137 | object_headers *headers ATTRIBUTE_UNUSED; |
| 1138 | { |
| 1139 | printf (_("call to tc_crawl_symbol_chain \n")); |
| 1140 | } |
| 1141 | |
| 1142 | symbolS * |
| 1143 | md_undefined_symbol (name) |
| 1144 | char *name ATTRIBUTE_UNUSED; |
| 1145 | { |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | void |
| 1150 | tc_headers_hook (headers) |
| 1151 | object_headers *headers ATTRIBUTE_UNUSED; |
| 1152 | { |
| 1153 | printf (_("call to tc_headers_hook \n")); |
| 1154 | } |
| 1155 | |
| 1156 | /* Various routines to kill one day. */ |
| 1157 | /* Equal to MAX_PRECISION in atof-ieee.c. */ |
| 1158 | #define MAX_LITTLENUMS 6 |
| 1159 | |
| 1160 | /* Turn a string in input_line_pointer into a floating point constant |
| 1161 | of type type, and store the appropriate bytes in *LITP. The number |
| 1162 | of LITTLENUMS emitted is stored in *SIZEP. An error message is |
| 1163 | returned, or NULL on OK. */ |
| 1164 | |
| 1165 | char * |
| 1166 | md_atof (type, litP, sizeP) |
| 1167 | char type; |
| 1168 | char *litP; |
| 1169 | int *sizeP; |
| 1170 | { |
| 1171 | int prec; |
| 1172 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; |
| 1173 | LITTLENUM_TYPE *wordP; |
| 1174 | char *t; |
| 1175 | |
| 1176 | switch (type) |
| 1177 | { |
| 1178 | case 'f': |
| 1179 | case 'F': |
| 1180 | case 's': |
| 1181 | case 'S': |
| 1182 | prec = 2; |
| 1183 | break; |
| 1184 | |
| 1185 | case 'd': |
| 1186 | case 'D': |
| 1187 | case 'r': |
| 1188 | case 'R': |
| 1189 | prec = 4; |
| 1190 | break; |
| 1191 | |
| 1192 | case 'x': |
| 1193 | case 'X': |
| 1194 | prec = 6; |
| 1195 | break; |
| 1196 | |
| 1197 | case 'p': |
| 1198 | case 'P': |
| 1199 | prec = 6; |
| 1200 | break; |
| 1201 | |
| 1202 | default: |
| 1203 | *sizeP = 0; |
| 1204 | return _("Bad call to MD_ATOF()"); |
| 1205 | } |
| 1206 | t = atof_ieee (input_line_pointer, type, words); |
| 1207 | if (t) |
| 1208 | input_line_pointer = t; |
| 1209 | |
| 1210 | *sizeP = prec * sizeof (LITTLENUM_TYPE); |
| 1211 | for (wordP = words; prec--;) |
| 1212 | { |
| 1213 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); |
| 1214 | litP += sizeof (LITTLENUM_TYPE); |
| 1215 | } |
| 1216 | return 0; |
| 1217 | } |
| 1218 | \f |
| 1219 | const char *md_shortopts = ""; |
| 1220 | struct option md_longopts[] = { |
| 1221 | {NULL, no_argument, NULL, 0} |
| 1222 | }; |
| 1223 | size_t md_longopts_size = sizeof (md_longopts); |
| 1224 | |
| 1225 | int |
| 1226 | md_parse_option (c, arg) |
| 1227 | int c ATTRIBUTE_UNUSED; |
| 1228 | char *arg ATTRIBUTE_UNUSED; |
| 1229 | { |
| 1230 | return 0; |
| 1231 | } |
| 1232 | |
| 1233 | void |
| 1234 | md_show_usage (stream) |
| 1235 | FILE *stream ATTRIBUTE_UNUSED; |
| 1236 | { |
| 1237 | } |
| 1238 | \f |
| 1239 | static void wordify_scb PARAMS ((char *, int *, int *)); |
| 1240 | |
| 1241 | static void |
| 1242 | wordify_scb (buffer, disp_size, inst_size) |
| 1243 | char *buffer; |
| 1244 | int *disp_size; |
| 1245 | int *inst_size; |
| 1246 | { |
| 1247 | int rn = buffer[1] & 0x7; |
| 1248 | |
| 1249 | switch (buffer[0]) |
| 1250 | { |
| 1251 | case 0x0e: /* BSR */ |
| 1252 | case 0x20: |
| 1253 | case 0x21: |
| 1254 | case 0x22: |
| 1255 | case 0x23: |
| 1256 | case 0x24: |
| 1257 | case 0x25: |
| 1258 | case 0x26: |
| 1259 | case 0x27: |
| 1260 | case 0x28: |
| 1261 | case 0x29: |
| 1262 | case 0x2a: |
| 1263 | case 0x2b: |
| 1264 | case 0x2c: |
| 1265 | case 0x2d: |
| 1266 | case 0x2e: |
| 1267 | case 0x2f: |
| 1268 | buffer[0] |= 0x10; |
| 1269 | buffer[1] = 0; |
| 1270 | buffer[2] = 0; |
| 1271 | *disp_size = 2; |
| 1272 | *inst_size = 1; |
| 1273 | return; |
| 1274 | default: |
| 1275 | abort (); |
| 1276 | |
| 1277 | case 0x01: |
| 1278 | *inst_size = 6; |
| 1279 | *disp_size = 2; |
| 1280 | break; |
| 1281 | case 0x06: |
| 1282 | *inst_size = 8; |
| 1283 | *disp_size = 2; |
| 1284 | |
| 1285 | *buffer++ = 0x26; /* bne + 8 */ |
| 1286 | *buffer++ = 0x08; |
| 1287 | break; |
| 1288 | case 0x07: |
| 1289 | *inst_size = 8; |
| 1290 | *disp_size = 2; |
| 1291 | *buffer++ = 0x27; /* bne + 8 */ |
| 1292 | *buffer++ = 0x08; |
| 1293 | break; |
| 1294 | |
| 1295 | } |
| 1296 | *buffer++ = 0xa8 | rn; /* addq -1,rn */ |
| 1297 | *buffer++ = 0x0c; |
| 1298 | *buffer++ = 0x04; /* cmp #0xff:8, rn */ |
| 1299 | *buffer++ = 0xff; |
| 1300 | *buffer++ = 0x70 | rn; |
| 1301 | *buffer++ = 0x36; /* bne ... */ |
| 1302 | *buffer++ = 0; |
| 1303 | *buffer++ = 0; |
| 1304 | } |
| 1305 | |
| 1306 | /* Called after relaxing, change the frags so they know how big they |
| 1307 | are. */ |
| 1308 | |
| 1309 | void |
| 1310 | md_convert_frag (headers, seg, fragP) |
| 1311 | object_headers *headers ATTRIBUTE_UNUSED; |
| 1312 | segT seg ATTRIBUTE_UNUSED; |
| 1313 | fragS *fragP; |
| 1314 | { |
| 1315 | int disp_size = 0; |
| 1316 | int inst_size = 0; |
| 1317 | char *buffer = fragP->fr_fix + fragP->fr_literal; |
| 1318 | |
| 1319 | switch (fragP->fr_subtype) |
| 1320 | { |
| 1321 | case C (BRANCH, BYTE_DISP): |
| 1322 | disp_size = 1; |
| 1323 | inst_size = 1; |
| 1324 | break; |
| 1325 | |
| 1326 | case C (SCB_F, BYTE_DISP): |
| 1327 | case C (SCB_TST, BYTE_DISP): |
| 1328 | disp_size = 1; |
| 1329 | inst_size = 2; |
| 1330 | break; |
| 1331 | |
| 1332 | /* Branches to a known 16 bit displacement. */ |
| 1333 | |
| 1334 | /* Turn on the 16bit bit. */ |
| 1335 | case C (BRANCH, WORD_DISP): |
| 1336 | case C (SCB_F, WORD_DISP): |
| 1337 | case C (SCB_TST, WORD_DISP): |
| 1338 | wordify_scb (buffer, &disp_size, &inst_size); |
| 1339 | break; |
| 1340 | |
| 1341 | case C (BRANCH, UNDEF_WORD_DISP): |
| 1342 | case C (SCB_F, UNDEF_WORD_DISP): |
| 1343 | case C (SCB_TST, UNDEF_WORD_DISP): |
| 1344 | /* This tried to be relaxed, but didn't manage it, it now needs |
| 1345 | a fix. */ |
| 1346 | wordify_scb (buffer, &disp_size, &inst_size); |
| 1347 | |
| 1348 | /* Make a reloc */ |
| 1349 | fix_new (fragP, |
| 1350 | fragP->fr_fix + inst_size, |
| 1351 | 4, |
| 1352 | fragP->fr_symbol, |
| 1353 | fragP->fr_offset, |
| 1354 | 0, |
| 1355 | R_H8500_PCREL16); |
| 1356 | |
| 1357 | fragP->fr_fix += disp_size + inst_size; |
| 1358 | return; |
| 1359 | break; |
| 1360 | default: |
| 1361 | abort (); |
| 1362 | } |
| 1363 | if (inst_size) |
| 1364 | { |
| 1365 | /* Get the address of the end of the instruction */ |
| 1366 | int next_inst = fragP->fr_fix + fragP->fr_address + disp_size + inst_size; |
| 1367 | int targ_addr = (S_GET_VALUE (fragP->fr_symbol) + |
| 1368 | fragP->fr_offset); |
| 1369 | int disp = targ_addr - next_inst; |
| 1370 | |
| 1371 | md_number_to_chars (buffer + inst_size, disp, disp_size); |
| 1372 | fragP->fr_fix += disp_size + inst_size; |
| 1373 | } |
| 1374 | } |
| 1375 | |
| 1376 | valueT |
| 1377 | md_section_align (seg, size) |
| 1378 | segT seg ; |
| 1379 | valueT size; |
| 1380 | { |
| 1381 | return ((size + (1 << section_alignment[(int) seg]) - 1) |
| 1382 | & (-1 << section_alignment[(int) seg])); |
| 1383 | |
| 1384 | } |
| 1385 | |
| 1386 | void |
| 1387 | md_apply_fix3 (fixP, valP, seg) |
| 1388 | fixS *fixP; |
| 1389 | valueT * valP; |
| 1390 | segT seg ATTRIBUTE_UNUSED; |
| 1391 | { |
| 1392 | long val = * (long *) valP; |
| 1393 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 1394 | |
| 1395 | if (fixP->fx_r_type == 0) |
| 1396 | fixP->fx_r_type = fixP->fx_size == 4 ? R_H8500_IMM32 : R_H8500_IMM16; |
| 1397 | |
| 1398 | switch (fixP->fx_r_type) |
| 1399 | { |
| 1400 | case R_H8500_IMM8: |
| 1401 | case R_H8500_PCREL8: |
| 1402 | *buf++ = val; |
| 1403 | break; |
| 1404 | case R_H8500_IMM16: |
| 1405 | case R_H8500_LOW16: |
| 1406 | case R_H8500_PCREL16: |
| 1407 | *buf++ = (val >> 8); |
| 1408 | *buf++ = val; |
| 1409 | break; |
| 1410 | case R_H8500_HIGH8: |
| 1411 | *buf++ = val >> 16; |
| 1412 | break; |
| 1413 | case R_H8500_HIGH16: |
| 1414 | *buf++ = val >> 24; |
| 1415 | *buf++ = val >> 16; |
| 1416 | break; |
| 1417 | case R_H8500_IMM24: |
| 1418 | *buf++ = (val >> 16); |
| 1419 | *buf++ = (val >> 8); |
| 1420 | *buf++ = val; |
| 1421 | break; |
| 1422 | case R_H8500_IMM32: |
| 1423 | *buf++ = (val >> 24); |
| 1424 | *buf++ = (val >> 16); |
| 1425 | *buf++ = (val >> 8); |
| 1426 | *buf++ = val; |
| 1427 | break; |
| 1428 | default: |
| 1429 | abort (); |
| 1430 | } |
| 1431 | |
| 1432 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) |
| 1433 | fixP->fx_done = 1; |
| 1434 | } |
| 1435 | |
| 1436 | /* Called just before address relaxation, return the length |
| 1437 | by which a fragment must grow to reach it's destination. */ |
| 1438 | |
| 1439 | int |
| 1440 | md_estimate_size_before_relax (fragP, segment_type) |
| 1441 | register fragS *fragP; |
| 1442 | register segT segment_type; |
| 1443 | { |
| 1444 | int what; |
| 1445 | |
| 1446 | switch (fragP->fr_subtype) |
| 1447 | { |
| 1448 | default: |
| 1449 | abort (); |
| 1450 | |
| 1451 | case C (BRANCH, UNDEF_BYTE_DISP): |
| 1452 | case C (SCB_F, UNDEF_BYTE_DISP): |
| 1453 | case C (SCB_TST, UNDEF_BYTE_DISP): |
| 1454 | what = GET_WHAT (fragP->fr_subtype); |
| 1455 | /* used to be a branch to somewhere which was unknown */ |
| 1456 | if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type) |
| 1457 | { |
| 1458 | /* Got a symbol and it's defined in this segment, become byte |
| 1459 | sized - maybe it will fix up. */ |
| 1460 | fragP->fr_subtype = C (what, BYTE_DISP); |
| 1461 | } |
| 1462 | else |
| 1463 | { |
| 1464 | /* Its got a segment, but its not ours, so it will always be |
| 1465 | long. */ |
| 1466 | fragP->fr_subtype = C (what, UNDEF_WORD_DISP); |
| 1467 | } |
| 1468 | break; |
| 1469 | |
| 1470 | case C (BRANCH, BYTE_DISP): |
| 1471 | case C (BRANCH, WORD_DISP): |
| 1472 | case C (BRANCH, UNDEF_WORD_DISP): |
| 1473 | case C (SCB_F, BYTE_DISP): |
| 1474 | case C (SCB_F, WORD_DISP): |
| 1475 | case C (SCB_F, UNDEF_WORD_DISP): |
| 1476 | case C (SCB_TST, BYTE_DISP): |
| 1477 | case C (SCB_TST, WORD_DISP): |
| 1478 | case C (SCB_TST, UNDEF_WORD_DISP): |
| 1479 | /* When relaxing a section for the second time, we don't need to |
| 1480 | do anything besides return the current size. */ |
| 1481 | break; |
| 1482 | } |
| 1483 | |
| 1484 | return md_relax_table[fragP->fr_subtype].rlx_length; |
| 1485 | } |
| 1486 | |
| 1487 | /* Put number into target byte order. */ |
| 1488 | |
| 1489 | void |
| 1490 | md_number_to_chars (ptr, use, nbytes) |
| 1491 | char *ptr; |
| 1492 | valueT use; |
| 1493 | int nbytes; |
| 1494 | { |
| 1495 | number_to_chars_bigendian (ptr, use, nbytes); |
| 1496 | } |
| 1497 | |
| 1498 | long |
| 1499 | md_pcrel_from (fixP) |
| 1500 | fixS *fixP; |
| 1501 | { |
| 1502 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; |
| 1503 | } |
| 1504 | |
| 1505 | void |
| 1506 | tc_coff_symbol_emit_hook (ignore) |
| 1507 | symbolS *ignore ATTRIBUTE_UNUSED; |
| 1508 | { |
| 1509 | } |
| 1510 | |
| 1511 | short |
| 1512 | tc_coff_fix2rtype (fix_ptr) |
| 1513 | fixS *fix_ptr; |
| 1514 | { |
| 1515 | if (fix_ptr->fx_r_type == RELOC_32) |
| 1516 | { |
| 1517 | /* cons likes to create reloc32's whatever the size of the reloc.. |
| 1518 | */ |
| 1519 | switch (fix_ptr->fx_size) |
| 1520 | { |
| 1521 | case 2: |
| 1522 | return R_H8500_IMM16; |
| 1523 | break; |
| 1524 | case 1: |
| 1525 | return R_H8500_IMM8; |
| 1526 | break; |
| 1527 | default: |
| 1528 | abort (); |
| 1529 | } |
| 1530 | } |
| 1531 | return fix_ptr->fx_r_type; |
| 1532 | } |
| 1533 | |
| 1534 | void |
| 1535 | tc_reloc_mangle (fix_ptr, intr, base) |
| 1536 | fixS *fix_ptr; |
| 1537 | struct internal_reloc *intr; |
| 1538 | bfd_vma base; |
| 1539 | |
| 1540 | { |
| 1541 | symbolS *symbol_ptr; |
| 1542 | |
| 1543 | symbol_ptr = fix_ptr->fx_addsy; |
| 1544 | |
| 1545 | /* If this relocation is attached to a symbol then it's ok |
| 1546 | to output it */ |
| 1547 | if (fix_ptr->fx_r_type == RELOC_32) |
| 1548 | { |
| 1549 | /* cons likes to create reloc32's whatever the size of the reloc.. |
| 1550 | */ |
| 1551 | switch (fix_ptr->fx_size) |
| 1552 | { |
| 1553 | case 2: |
| 1554 | intr->r_type = R_IMM16; |
| 1555 | break; |
| 1556 | case 1: |
| 1557 | intr->r_type = R_IMM8; |
| 1558 | break; |
| 1559 | default: |
| 1560 | abort (); |
| 1561 | } |
| 1562 | } |
| 1563 | else |
| 1564 | { |
| 1565 | intr->r_type = fix_ptr->fx_r_type; |
| 1566 | } |
| 1567 | |
| 1568 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; |
| 1569 | intr->r_offset = fix_ptr->fx_offset; |
| 1570 | |
| 1571 | /* Turn the segment of the symbol into an offset. */ |
| 1572 | if (symbol_ptr) |
| 1573 | { |
| 1574 | symbolS *dot; |
| 1575 | |
| 1576 | dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot; |
| 1577 | if (dot) |
| 1578 | { |
| 1579 | #if 0 |
| 1580 | intr->r_offset -= |
| 1581 | segment_info[S_GET_SEGMENT (symbol_ptr)].scnhdr.s_paddr; |
| 1582 | #endif |
| 1583 | intr->r_offset += S_GET_VALUE (symbol_ptr); |
| 1584 | intr->r_symndx = dot->sy_number; |
| 1585 | } |
| 1586 | else |
| 1587 | { |
| 1588 | intr->r_symndx = symbol_ptr->sy_number; |
| 1589 | } |
| 1590 | |
| 1591 | } |
| 1592 | else |
| 1593 | { |
| 1594 | intr->r_symndx = -1; |
| 1595 | } |
| 1596 | |
| 1597 | } |
| 1598 | |
| 1599 | int |
| 1600 | start_label (ptr) |
| 1601 | char *ptr; |
| 1602 | { |
| 1603 | /* Check for :s.w */ |
| 1604 | if (ISALPHA (ptr[1]) && ptr[2] == '.') |
| 1605 | return 0; |
| 1606 | /* Check for :s */ |
| 1607 | if (ISALPHA (ptr[1]) && !ISALPHA (ptr[2])) |
| 1608 | return 0; |
| 1609 | return 1; |
| 1610 | } |
| 1611 | |
| 1612 | int |
| 1613 | tc_coff_sizemachdep (frag) |
| 1614 | fragS *frag; |
| 1615 | { |
| 1616 | return md_relax_table[frag->fr_subtype].rlx_length; |
| 1617 | } |