| 1 | /* tc-z8k.c -- Assemble code for the Zilog Z800n |
| 2 | Copyright (C) 1992, 93, 94, 95, 96, 97, 1998 Free Software Foundation. |
| 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 the Free |
| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 19 | 02111-1307, USA. */ |
| 20 | |
| 21 | /* |
| 22 | Written By Steve Chamberlain |
| 23 | sac@cygnus.com |
| 24 | */ |
| 25 | #define DEFINE_TABLE |
| 26 | #include <stdio.h> |
| 27 | |
| 28 | #include "opcodes/z8k-opc.h" |
| 29 | |
| 30 | #include "as.h" |
| 31 | #include "bfd.h" |
| 32 | #include <ctype.h> |
| 33 | |
| 34 | const char comment_chars[] = |
| 35 | {'!', 0}; |
| 36 | const char line_separator_chars[] = |
| 37 | {';', 0}; |
| 38 | const char line_comment_chars[] = |
| 39 | {'#', 0}; |
| 40 | |
| 41 | extern int machine; |
| 42 | extern int coff_flags; |
| 43 | int segmented_mode; |
| 44 | const int md_reloc_size; |
| 45 | |
| 46 | /* This table describes all the machine specific pseudo-ops the assembler |
| 47 | has to support. The fields are: |
| 48 | pseudo-op name without dot |
| 49 | function to call to execute this pseudo-op |
| 50 | Integer arg to pass to the function |
| 51 | */ |
| 52 | |
| 53 | void cons (); |
| 54 | |
| 55 | void |
| 56 | s_segm () |
| 57 | { |
| 58 | segmented_mode = 1; |
| 59 | machine = bfd_mach_z8001; |
| 60 | coff_flags = F_Z8001; |
| 61 | } |
| 62 | |
| 63 | void |
| 64 | s_unseg () |
| 65 | { |
| 66 | segmented_mode = 0; |
| 67 | machine = bfd_mach_z8002; |
| 68 | coff_flags = F_Z8002; |
| 69 | } |
| 70 | |
| 71 | static |
| 72 | void |
| 73 | even () |
| 74 | { |
| 75 | frag_align (1, 0, 0); |
| 76 | record_alignment (now_seg, 1); |
| 77 | } |
| 78 | |
| 79 | void obj_coff_section (); |
| 80 | |
| 81 | int |
| 82 | tohex (c) |
| 83 | int c; |
| 84 | { |
| 85 | if (isdigit (c)) |
| 86 | return c - '0'; |
| 87 | if (islower (c)) |
| 88 | return c - 'a' + 10; |
| 89 | return c - 'A' + 10; |
| 90 | } |
| 91 | |
| 92 | void |
| 93 | sval () |
| 94 | { |
| 95 | |
| 96 | SKIP_WHITESPACE (); |
| 97 | if (*input_line_pointer == '\'') |
| 98 | { |
| 99 | int c; |
| 100 | input_line_pointer++; |
| 101 | c = *input_line_pointer++; |
| 102 | while (c != '\'') |
| 103 | { |
| 104 | if (c == '%') |
| 105 | { |
| 106 | c = (tohex (input_line_pointer[0]) << 4) |
| 107 | | tohex (input_line_pointer[1]); |
| 108 | input_line_pointer += 2; |
| 109 | } |
| 110 | FRAG_APPEND_1_CHAR (c); |
| 111 | c = *input_line_pointer++; |
| 112 | } |
| 113 | demand_empty_rest_of_line (); |
| 114 | } |
| 115 | |
| 116 | } |
| 117 | const pseudo_typeS md_pseudo_table[] = |
| 118 | { |
| 119 | {"int", cons, 2}, |
| 120 | {"data.b", cons, 1}, |
| 121 | {"data.w", cons, 2}, |
| 122 | {"data.l", cons, 4}, |
| 123 | {"form", listing_psize, 0}, |
| 124 | {"heading", listing_title, 0}, |
| 125 | {"import", s_ignore, 0}, |
| 126 | {"page", listing_eject, 0}, |
| 127 | {"program", s_ignore, 0}, |
| 128 | {"z8001", s_segm, 0}, |
| 129 | {"z8002", s_unseg, 0}, |
| 130 | |
| 131 | |
| 132 | {"segm", s_segm, 0}, |
| 133 | {"unsegm", s_unseg, 0}, |
| 134 | {"unseg", s_unseg, 0}, |
| 135 | {"name", s_app_file, 0}, |
| 136 | {"global", s_globl, 0}, |
| 137 | {"wval", cons, 2}, |
| 138 | {"lval", cons, 4}, |
| 139 | {"bval", cons, 1}, |
| 140 | {"sval", sval, 0}, |
| 141 | {"rsect", obj_coff_section, 0}, |
| 142 | {"sect", obj_coff_section, 0}, |
| 143 | {"block", s_space, 0}, |
| 144 | {"even", even, 0}, |
| 145 | {0, 0, 0} |
| 146 | }; |
| 147 | |
| 148 | const char EXP_CHARS[] = "eE"; |
| 149 | |
| 150 | /* Chars that mean this number is a floating point constant */ |
| 151 | /* As in 0f12.456 */ |
| 152 | /* or 0d1.2345e12 */ |
| 153 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
| 154 | |
| 155 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ |
| 156 | |
| 157 | void |
| 158 | md_begin () |
| 159 | { |
| 160 | opcode_entry_type *opcode; |
| 161 | char *prev_name = ""; |
| 162 | int idx = 0; |
| 163 | |
| 164 | opcode_hash_control = hash_new (); |
| 165 | |
| 166 | for (opcode = z8k_table; opcode->name; opcode++) |
| 167 | { |
| 168 | /* Only enter unique codes into the table */ |
| 169 | char *src = opcode->name; |
| 170 | |
| 171 | if (strcmp (opcode->name, prev_name)) |
| 172 | { |
| 173 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); |
| 174 | idx++; |
| 175 | } |
| 176 | opcode->idx = idx; |
| 177 | prev_name = opcode->name; |
| 178 | } |
| 179 | |
| 180 | /* default to z8002 */ |
| 181 | s_unseg (); |
| 182 | |
| 183 | /* insert the pseudo ops too */ |
| 184 | for (idx = 0; md_pseudo_table[idx].poc_name; idx++) |
| 185 | { |
| 186 | opcode_entry_type *fake_opcode; |
| 187 | fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type)); |
| 188 | fake_opcode->name = md_pseudo_table[idx].poc_name, |
| 189 | fake_opcode->func = (void *) (md_pseudo_table + idx); |
| 190 | fake_opcode->opcode = 250; |
| 191 | hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode); |
| 192 | } |
| 193 | |
| 194 | linkrelax = 1; |
| 195 | } |
| 196 | |
| 197 | struct z8k_exp |
| 198 | { |
| 199 | char *e_beg; |
| 200 | char *e_end; |
| 201 | expressionS e_exp; |
| 202 | }; |
| 203 | typedef struct z8k_op |
| 204 | { |
| 205 | char regsize; /* 'b','w','r','q' */ |
| 206 | unsigned int reg; /* 0..15 */ |
| 207 | |
| 208 | int mode; |
| 209 | |
| 210 | unsigned int x_reg; /* any other register associated with the mode */ |
| 211 | expressionS exp; /* any expression */ |
| 212 | } |
| 213 | |
| 214 | op_type; |
| 215 | |
| 216 | static expressionS *da_operand; |
| 217 | static expressionS *imm_operand; |
| 218 | |
| 219 | int reg[16]; |
| 220 | int the_cc; |
| 221 | int the_ctrl; |
| 222 | int the_flags; |
| 223 | int the_interrupt; |
| 224 | |
| 225 | char * |
| 226 | DEFUN (whatreg, (reg, src), |
| 227 | int *reg AND |
| 228 | char *src) |
| 229 | { |
| 230 | if (isdigit (src[1])) |
| 231 | { |
| 232 | *reg = (src[0] - '0') * 10 + src[1] - '0'; |
| 233 | return src + 2; |
| 234 | } |
| 235 | else |
| 236 | { |
| 237 | *reg = (src[0] - '0'); |
| 238 | return src + 1; |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | /* |
| 243 | parse operands |
| 244 | |
| 245 | rh0-rh7, rl0-rl7 |
| 246 | r0-r15 |
| 247 | rr0-rr14 |
| 248 | rq0--rq12 |
| 249 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp |
| 250 | r0l,r0h,..r7l,r7h |
| 251 | @WREG |
| 252 | @WREG+ |
| 253 | @-WREG |
| 254 | #const |
| 255 | |
| 256 | */ |
| 257 | |
| 258 | /* try and parse a reg name, returns number of chars consumed */ |
| 259 | char * |
| 260 | DEFUN (parse_reg, (src, mode, reg), |
| 261 | char *src AND |
| 262 | int *mode AND |
| 263 | unsigned int *reg) |
| 264 | { |
| 265 | char *res = 0; |
| 266 | char regno; |
| 267 | |
| 268 | if (src[0] == 's' && src[1] == 'p') |
| 269 | { |
| 270 | if (segmented_mode) |
| 271 | { |
| 272 | *mode = CLASS_REG_LONG; |
| 273 | *reg = 14; |
| 274 | } |
| 275 | else |
| 276 | { |
| 277 | *mode = CLASS_REG_WORD; |
| 278 | *reg = 15; |
| 279 | } |
| 280 | return src + 2; |
| 281 | } |
| 282 | if (src[0] == 'r') |
| 283 | { |
| 284 | if (src[1] == 'r') |
| 285 | { |
| 286 | *mode = CLASS_REG_LONG; |
| 287 | res = whatreg (reg, src + 2); |
| 288 | regno = *reg; |
| 289 | if (regno > 14) |
| 290 | as_warn (_("register rr%d, out of range."),regno); |
| 291 | } |
| 292 | else if (src[1] == 'h') |
| 293 | { |
| 294 | *mode = CLASS_REG_BYTE; |
| 295 | res = whatreg (reg, src + 2); |
| 296 | regno = *reg; |
| 297 | if (regno > 7) |
| 298 | as_warn (_("register rh%d, out of range."),regno); |
| 299 | } |
| 300 | else if (src[1] == 'l') |
| 301 | { |
| 302 | *mode = CLASS_REG_BYTE; |
| 303 | res = whatreg (reg, src + 2); |
| 304 | regno = *reg; |
| 305 | if (regno > 7) |
| 306 | as_warn (_("register rl%d, out of range."),regno); |
| 307 | *reg += 8; |
| 308 | } |
| 309 | else if (src[1] == 'q') |
| 310 | { |
| 311 | *mode = CLASS_REG_QUAD; |
| 312 | res = whatreg (reg, src + 2); |
| 313 | regno = *reg; |
| 314 | if (regno > 12) |
| 315 | as_warn (_("register rq%d, out of range."),regno); |
| 316 | } |
| 317 | else |
| 318 | { |
| 319 | *mode = CLASS_REG_WORD; |
| 320 | res = whatreg (reg, src + 1); |
| 321 | regno = *reg; |
| 322 | if (regno > 15) |
| 323 | as_warn (_("register r%d, out of range."),regno); |
| 324 | } |
| 325 | } |
| 326 | return res; |
| 327 | |
| 328 | } |
| 329 | |
| 330 | char * |
| 331 | DEFUN (parse_exp, (s, op), |
| 332 | char *s AND |
| 333 | expressionS * op) |
| 334 | { |
| 335 | char *save = input_line_pointer; |
| 336 | char *new; |
| 337 | |
| 338 | input_line_pointer = s; |
| 339 | expression (op); |
| 340 | if (op->X_op == O_absent) |
| 341 | as_bad (_("missing operand")); |
| 342 | new = input_line_pointer; |
| 343 | input_line_pointer = save; |
| 344 | return new; |
| 345 | } |
| 346 | |
| 347 | /* The many forms of operand: |
| 348 | |
| 349 | <rb> |
| 350 | <r> |
| 351 | <rr> |
| 352 | <rq> |
| 353 | @r |
| 354 | #exp |
| 355 | exp |
| 356 | exp(r) |
| 357 | r(#exp) |
| 358 | r(r) |
| 359 | |
| 360 | |
| 361 | |
| 362 | */ |
| 363 | |
| 364 | static |
| 365 | char * |
| 366 | DEFUN (checkfor, (ptr, what), |
| 367 | char *ptr AND |
| 368 | char what) |
| 369 | { |
| 370 | if (*ptr == what) |
| 371 | ptr++; |
| 372 | else |
| 373 | { |
| 374 | as_bad (_("expected %c"), what); |
| 375 | } |
| 376 | return ptr; |
| 377 | } |
| 378 | |
| 379 | /* Make sure the mode supplied is the size of a word */ |
| 380 | static void |
| 381 | DEFUN (regword, (mode, string), |
| 382 | int mode AND |
| 383 | char *string) |
| 384 | { |
| 385 | int ok; |
| 386 | |
| 387 | ok = CLASS_REG_WORD; |
| 388 | if (ok != mode) |
| 389 | { |
| 390 | as_bad (_("register is wrong size for a word %s"), string); |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | /* Make sure the mode supplied is the size of an address */ |
| 395 | static void |
| 396 | DEFUN (regaddr, (mode, string), |
| 397 | int mode AND |
| 398 | char *string) |
| 399 | { |
| 400 | int ok; |
| 401 | |
| 402 | ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD; |
| 403 | if (ok != mode) |
| 404 | { |
| 405 | as_bad (_("register is wrong size for address %s"), string); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | struct ctrl_names |
| 410 | { |
| 411 | int value; |
| 412 | char *name; |
| 413 | }; |
| 414 | |
| 415 | struct ctrl_names ctrl_table[] = |
| 416 | { |
| 417 | 0x2, "fcw", |
| 418 | 0X3, "refresh", |
| 419 | 0x4, "psapseg", |
| 420 | 0x5, "psapoff", |
| 421 | 0x5, "psap", |
| 422 | 0x6, "nspseg", |
| 423 | 0x7, "nspoff", |
| 424 | 0x7, "nsp", |
| 425 | 0, 0 |
| 426 | }; |
| 427 | |
| 428 | static void |
| 429 | DEFUN (get_ctrl_operand, (ptr, mode, dst), |
| 430 | char **ptr AND |
| 431 | struct z8k_op *mode AND |
| 432 | unsigned int dst) |
| 433 | { |
| 434 | char *src = *ptr; |
| 435 | int r; |
| 436 | int i; |
| 437 | |
| 438 | while (*src == ' ') |
| 439 | src++; |
| 440 | |
| 441 | mode->mode = CLASS_CTRL; |
| 442 | for (i = 0; ctrl_table[i].name; i++) |
| 443 | { |
| 444 | int j; |
| 445 | |
| 446 | for (j = 0; ctrl_table[i].name[j]; j++) |
| 447 | { |
| 448 | if (ctrl_table[i].name[j] != src[j]) |
| 449 | goto fail; |
| 450 | } |
| 451 | the_ctrl = ctrl_table[i].value; |
| 452 | *ptr = src + j; |
| 453 | return; |
| 454 | fail:; |
| 455 | } |
| 456 | the_ctrl = 0; |
| 457 | return; |
| 458 | } |
| 459 | |
| 460 | struct flag_names |
| 461 | { |
| 462 | int value; |
| 463 | char *name; |
| 464 | |
| 465 | }; |
| 466 | |
| 467 | struct flag_names flag_table[] = |
| 468 | { |
| 469 | 0x1, "p", |
| 470 | 0x1, "v", |
| 471 | 0x2, "s", |
| 472 | 0x4, "z", |
| 473 | 0x8, "c", |
| 474 | 0x0, "+", |
| 475 | 0, 0 |
| 476 | }; |
| 477 | |
| 478 | static void |
| 479 | DEFUN (get_flags_operand, (ptr, mode, dst), |
| 480 | char **ptr AND |
| 481 | struct z8k_op *mode AND |
| 482 | unsigned int dst) |
| 483 | { |
| 484 | char *src = *ptr; |
| 485 | int r; |
| 486 | int i; |
| 487 | int j; |
| 488 | |
| 489 | while (*src == ' ') |
| 490 | src++; |
| 491 | |
| 492 | mode->mode = CLASS_FLAGS; |
| 493 | the_flags = 0; |
| 494 | for (j = 0; j <= 9; j++) |
| 495 | { |
| 496 | if (!src[j]) |
| 497 | goto done; |
| 498 | for (i = 0; flag_table[i].name; i++) |
| 499 | { |
| 500 | if (flag_table[i].name[0] == src[j]) |
| 501 | { |
| 502 | the_flags = the_flags | flag_table[i].value; |
| 503 | goto match; |
| 504 | } |
| 505 | } |
| 506 | goto done; |
| 507 | match: |
| 508 | ; |
| 509 | } |
| 510 | done: |
| 511 | *ptr = src + j; |
| 512 | return; |
| 513 | } |
| 514 | |
| 515 | |
| 516 | struct interrupt_names |
| 517 | { |
| 518 | int value; |
| 519 | char *name; |
| 520 | |
| 521 | }; |
| 522 | |
| 523 | struct interrupt_names intr_table[] = |
| 524 | { |
| 525 | 0x1, "nvi", |
| 526 | 0x2, "vi", |
| 527 | 0x3, "both", |
| 528 | 0x3, "all", |
| 529 | 0, 0 |
| 530 | }; |
| 531 | |
| 532 | static void |
| 533 | DEFUN (get_interrupt_operand, (ptr, mode, dst), |
| 534 | char **ptr AND |
| 535 | struct z8k_op *mode AND |
| 536 | unsigned int dst) |
| 537 | { |
| 538 | char *src = *ptr; |
| 539 | int r; |
| 540 | int i; |
| 541 | |
| 542 | while (*src == ' ') |
| 543 | src++; |
| 544 | |
| 545 | mode->mode = CLASS_IMM; |
| 546 | for (i = 0; intr_table[i].name; i++) |
| 547 | { |
| 548 | int j; |
| 549 | |
| 550 | for (j = 0; intr_table[i].name[j]; j++) |
| 551 | { |
| 552 | if (intr_table[i].name[j] != src[j]) |
| 553 | goto fail; |
| 554 | } |
| 555 | the_interrupt = intr_table[i].value; |
| 556 | *ptr = src + j; |
| 557 | return; |
| 558 | fail:; |
| 559 | } |
| 560 | the_interrupt = 0x0; |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | struct cc_names |
| 565 | { |
| 566 | int value; |
| 567 | char *name; |
| 568 | |
| 569 | }; |
| 570 | |
| 571 | struct cc_names table[] = |
| 572 | { |
| 573 | 0x0, "f", |
| 574 | 0x1, "lt", |
| 575 | 0x2, "le", |
| 576 | 0x3, "ule", |
| 577 | 0x4, "ov", |
| 578 | 0x4, "pe", |
| 579 | 0x5, "mi", |
| 580 | 0x6, "eq", |
| 581 | 0x6, "z", |
| 582 | 0x7, "c", |
| 583 | 0x7, "ult", |
| 584 | 0x8, "t", |
| 585 | 0x9, "ge", |
| 586 | 0xa, "gt", |
| 587 | 0xb, "ugt", |
| 588 | 0xc, "nov", |
| 589 | 0xc, "po", |
| 590 | 0xd, "pl", |
| 591 | 0xe, "ne", |
| 592 | 0xe, "nz", |
| 593 | 0xf, "nc", |
| 594 | 0xf, "uge", |
| 595 | 0, 0 |
| 596 | }; |
| 597 | |
| 598 | static void |
| 599 | DEFUN (get_cc_operand, (ptr, mode, dst), |
| 600 | char **ptr AND |
| 601 | struct z8k_op *mode AND |
| 602 | unsigned int dst) |
| 603 | { |
| 604 | char *src = *ptr; |
| 605 | int r; |
| 606 | int i; |
| 607 | |
| 608 | while (*src == ' ') |
| 609 | src++; |
| 610 | |
| 611 | mode->mode = CLASS_CC; |
| 612 | for (i = 0; table[i].name; i++) |
| 613 | { |
| 614 | int j; |
| 615 | |
| 616 | for (j = 0; table[i].name[j]; j++) |
| 617 | { |
| 618 | if (table[i].name[j] != src[j]) |
| 619 | goto fail; |
| 620 | } |
| 621 | the_cc = table[i].value; |
| 622 | *ptr = src + j; |
| 623 | return; |
| 624 | fail:; |
| 625 | } |
| 626 | the_cc = 0x8; |
| 627 | } |
| 628 | |
| 629 | static void |
| 630 | get_operand (ptr, mode, dst) |
| 631 | char **ptr; |
| 632 | struct z8k_op *mode; |
| 633 | unsigned int dst; |
| 634 | { |
| 635 | char *src = *ptr; |
| 636 | char *end; |
| 637 | unsigned int num; |
| 638 | unsigned int len; |
| 639 | unsigned int size; |
| 640 | |
| 641 | mode->mode = 0; |
| 642 | |
| 643 | while (*src == ' ') |
| 644 | src++; |
| 645 | if (*src == '#') |
| 646 | { |
| 647 | mode->mode = CLASS_IMM; |
| 648 | imm_operand = &(mode->exp); |
| 649 | src = parse_exp (src + 1, &(mode->exp)); |
| 650 | } |
| 651 | else if (*src == '@') |
| 652 | { |
| 653 | int d; |
| 654 | |
| 655 | mode->mode = CLASS_IR; |
| 656 | src = parse_reg (src + 1, &d, &mode->reg); |
| 657 | } |
| 658 | else |
| 659 | { |
| 660 | int regn; |
| 661 | |
| 662 | end = parse_reg (src, &mode->mode, ®n); |
| 663 | |
| 664 | if (end) |
| 665 | { |
| 666 | int nw, nr; |
| 667 | |
| 668 | src = end; |
| 669 | if (*src == '(') |
| 670 | { |
| 671 | src++; |
| 672 | end = parse_reg (src, &nw, &nr); |
| 673 | if (end) |
| 674 | { |
| 675 | /* Got Ra(Rb) */ |
| 676 | src = end; |
| 677 | |
| 678 | if (*src != ')') |
| 679 | { |
| 680 | as_bad (_("Missing ) in ra(rb)")); |
| 681 | } |
| 682 | else |
| 683 | { |
| 684 | src++; |
| 685 | } |
| 686 | |
| 687 | regaddr (mode->mode, "ra(rb) ra"); |
| 688 | /* regword (mode->mode, "ra(rb) rb");*/ |
| 689 | mode->mode = CLASS_BX; |
| 690 | mode->reg = regn; |
| 691 | mode->x_reg = nr; |
| 692 | reg[ARG_RX] = nr; |
| 693 | } |
| 694 | else |
| 695 | { |
| 696 | /* Got Ra(disp) */ |
| 697 | if (*src == '#') |
| 698 | src++; |
| 699 | src = parse_exp (src, &(mode->exp)); |
| 700 | src = checkfor (src, ')'); |
| 701 | mode->mode = CLASS_BA; |
| 702 | mode->reg = regn; |
| 703 | mode->x_reg = 0; |
| 704 | imm_operand = &(mode->exp); |
| 705 | } |
| 706 | } |
| 707 | else |
| 708 | { |
| 709 | mode->reg = regn; |
| 710 | mode->x_reg = 0; |
| 711 | } |
| 712 | } |
| 713 | else |
| 714 | { |
| 715 | /* No initial reg */ |
| 716 | src = parse_exp (src, &(mode->exp)); |
| 717 | if (*src == '(') |
| 718 | { |
| 719 | src++; |
| 720 | end = parse_reg (src, &(mode->mode), ®n); |
| 721 | regword (mode->mode, "addr(Ra) ra"); |
| 722 | mode->mode = CLASS_X; |
| 723 | mode->reg = regn; |
| 724 | mode->x_reg = 0; |
| 725 | da_operand = &(mode->exp); |
| 726 | src = checkfor (end, ')'); |
| 727 | } |
| 728 | else |
| 729 | { |
| 730 | /* Just an address */ |
| 731 | mode->mode = CLASS_DA; |
| 732 | mode->reg = 0; |
| 733 | mode->x_reg = 0; |
| 734 | da_operand = &(mode->exp); |
| 735 | } |
| 736 | } |
| 737 | } |
| 738 | *ptr = src; |
| 739 | } |
| 740 | |
| 741 | static |
| 742 | char * |
| 743 | get_operands (opcode, op_end, operand) |
| 744 | opcode_entry_type *opcode; |
| 745 | char *op_end; |
| 746 | op_type *operand; |
| 747 | { |
| 748 | char *ptr = op_end; |
| 749 | char *savptr; |
| 750 | switch (opcode->noperands) |
| 751 | { |
| 752 | case 0: |
| 753 | operand[0].mode = 0; |
| 754 | operand[1].mode = 0; |
| 755 | break; |
| 756 | |
| 757 | case 1: |
| 758 | ptr++; |
| 759 | if (opcode->arg_info[0] == CLASS_CC) |
| 760 | { |
| 761 | get_cc_operand (&ptr, operand + 0, 0); |
| 762 | } |
| 763 | else if (opcode->arg_info[0] == CLASS_FLAGS) |
| 764 | { |
| 765 | get_flags_operand (&ptr, operand + 0, 0); |
| 766 | } |
| 767 | else if (opcode->arg_info[0] == (CLASS_IMM +(ARG_IMM2))) |
| 768 | { |
| 769 | get_interrupt_operand (&ptr, operand + 0, 0); |
| 770 | } |
| 771 | else |
| 772 | { |
| 773 | get_operand (&ptr, operand + 0, 0); |
| 774 | } |
| 775 | operand[1].mode = 0; |
| 776 | break; |
| 777 | |
| 778 | case 2: |
| 779 | ptr++; |
| 780 | savptr = ptr; |
| 781 | if (opcode->arg_info[0] == CLASS_CC) |
| 782 | { |
| 783 | get_cc_operand (&ptr, operand + 0, 0); |
| 784 | } |
| 785 | else if (opcode->arg_info[0] == CLASS_CTRL) |
| 786 | { |
| 787 | get_ctrl_operand (&ptr, operand + 0, 0); |
| 788 | if (the_ctrl == 0) |
| 789 | { |
| 790 | ptr = savptr; |
| 791 | get_operand (&ptr, operand + 0, 0); |
| 792 | if (ptr == 0) |
| 793 | return; |
| 794 | if (*ptr == ',') |
| 795 | ptr++; |
| 796 | get_ctrl_operand (&ptr, operand + 1, 1); |
| 797 | return ptr; |
| 798 | } |
| 799 | } |
| 800 | else |
| 801 | { |
| 802 | get_operand (&ptr, operand + 0, 0); |
| 803 | } |
| 804 | if (ptr == 0) |
| 805 | return; |
| 806 | if (*ptr == ',') |
| 807 | ptr++; |
| 808 | get_operand (&ptr, operand + 1, 1); |
| 809 | break; |
| 810 | |
| 811 | case 3: |
| 812 | ptr++; |
| 813 | get_operand (&ptr, operand + 0, 0); |
| 814 | if (*ptr == ',') |
| 815 | ptr++; |
| 816 | get_operand (&ptr, operand + 1, 1); |
| 817 | if (*ptr == ',') |
| 818 | ptr++; |
| 819 | get_operand (&ptr, operand + 2, 2); |
| 820 | break; |
| 821 | |
| 822 | case 4: |
| 823 | ptr++; |
| 824 | get_operand (&ptr, operand + 0, 0); |
| 825 | if (*ptr == ',') |
| 826 | ptr++; |
| 827 | get_operand (&ptr, operand + 1, 1); |
| 828 | if (*ptr == ',') |
| 829 | ptr++; |
| 830 | get_operand (&ptr, operand + 2, 2); |
| 831 | if (*ptr == ',') |
| 832 | ptr++; |
| 833 | get_cc_operand (&ptr, operand + 3, 3); |
| 834 | break; |
| 835 | default: |
| 836 | abort (); |
| 837 | } |
| 838 | |
| 839 | return ptr; |
| 840 | } |
| 841 | |
| 842 | /* Passed a pointer to a list of opcodes which use different |
| 843 | addressing modes, return the opcode which matches the opcodes |
| 844 | provided |
| 845 | */ |
| 846 | |
| 847 | static |
| 848 | opcode_entry_type * |
| 849 | DEFUN (get_specific, (opcode, operands), |
| 850 | opcode_entry_type * opcode AND |
| 851 | op_type * operands) |
| 852 | |
| 853 | { |
| 854 | opcode_entry_type *this_try = opcode; |
| 855 | int found = 0; |
| 856 | unsigned int noperands = opcode->noperands; |
| 857 | |
| 858 | unsigned int dispreg; |
| 859 | unsigned int this_index = opcode->idx; |
| 860 | |
| 861 | while (this_index == opcode->idx && !found) |
| 862 | { |
| 863 | unsigned int i; |
| 864 | |
| 865 | this_try = opcode++; |
| 866 | for (i = 0; i < noperands; i++) |
| 867 | { |
| 868 | int mode = operands[i].mode; |
| 869 | |
| 870 | if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) |
| 871 | { |
| 872 | /* it could be an pc rel operand, if this is a da mode and |
| 873 | we like disps, then insert it */ |
| 874 | |
| 875 | if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP) |
| 876 | { |
| 877 | /* This is the case */ |
| 878 | operands[i].mode = CLASS_DISP; |
| 879 | } |
| 880 | else if (mode == CLASS_BA && this_try->arg_info[i]) |
| 881 | { |
| 882 | /* Can't think of a way to turn what we've been given into |
| 883 | something that's ok */ |
| 884 | goto fail; |
| 885 | } |
| 886 | else if (this_try->arg_info[i] & CLASS_PR) |
| 887 | { |
| 888 | if (mode == CLASS_REG_LONG && segmented_mode) |
| 889 | { |
| 890 | /* ok */ |
| 891 | } |
| 892 | else if (mode == CLASS_REG_WORD && !segmented_mode) |
| 893 | { |
| 894 | /* ok */ |
| 895 | } |
| 896 | else |
| 897 | goto fail; |
| 898 | } |
| 899 | else |
| 900 | goto fail; |
| 901 | } |
| 902 | switch (mode & CLASS_MASK) |
| 903 | { |
| 904 | default: |
| 905 | break; |
| 906 | case CLASS_X: |
| 907 | case CLASS_IR: |
| 908 | case CLASS_BA: |
| 909 | case CLASS_BX: |
| 910 | case CLASS_DISP: |
| 911 | case CLASS_REG: |
| 912 | case CLASS_REG_WORD: |
| 913 | case CLASS_REG_BYTE: |
| 914 | case CLASS_REG_QUAD: |
| 915 | case CLASS_REG_LONG: |
| 916 | case CLASS_REGN0: |
| 917 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; |
| 918 | break; |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | found = 1; |
| 923 | fail:; |
| 924 | } |
| 925 | if (found) |
| 926 | return this_try; |
| 927 | else |
| 928 | return 0; |
| 929 | } |
| 930 | |
| 931 | static void |
| 932 | DEFUN (check_operand, (operand, width, string), |
| 933 | struct z8k_op *operand AND |
| 934 | unsigned int width AND |
| 935 | char *string) |
| 936 | { |
| 937 | if (operand->exp.X_add_symbol == 0 |
| 938 | && operand->exp.X_op_symbol == 0) |
| 939 | { |
| 940 | |
| 941 | /* No symbol involved, let's look at offset, it's dangerous if any of |
| 942 | the high bits are not 0 or ff's, find out by oring or anding with |
| 943 | the width and seeing if the answer is 0 or all fs*/ |
| 944 | if ((operand->exp.X_add_number & ~width) != 0 && |
| 945 | (operand->exp.X_add_number | width) != (~0)) |
| 946 | { |
| 947 | as_warn (_("operand %s0x%x out of range."), string, operand->exp.X_add_number); |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | } |
| 952 | |
| 953 | static char buffer[20]; |
| 954 | |
| 955 | static void |
| 956 | DEFUN (newfix, (ptr, type, operand), |
| 957 | int ptr AND |
| 958 | int type AND |
| 959 | expressionS * operand) |
| 960 | { |
| 961 | if (operand->X_add_symbol |
| 962 | || operand->X_op_symbol |
| 963 | || operand->X_add_number) |
| 964 | { |
| 965 | fix_new_exp (frag_now, |
| 966 | ptr, |
| 967 | 1, |
| 968 | operand, |
| 969 | 0, |
| 970 | type); |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | static char * |
| 975 | DEFUN (apply_fix, (ptr, type, operand, size), |
| 976 | char *ptr AND |
| 977 | int type AND |
| 978 | expressionS * operand AND |
| 979 | int size) |
| 980 | { |
| 981 | int n = operand->X_add_number; |
| 982 | |
| 983 | operand->X_add_number = n; |
| 984 | newfix ((ptr - buffer) / 2, type, operand); |
| 985 | #if 1 |
| 986 | switch (size) |
| 987 | { |
| 988 | case 8: /* 8 nibbles == 32 bits */ |
| 989 | *ptr++ = n >> 28; |
| 990 | *ptr++ = n >> 24; |
| 991 | *ptr++ = n >> 20; |
| 992 | *ptr++ = n >> 16; |
| 993 | case 4: /* 4 niblles == 16 bits */ |
| 994 | *ptr++ = n >> 12; |
| 995 | *ptr++ = n >> 8; |
| 996 | case 2: |
| 997 | *ptr++ = n >> 4; |
| 998 | case 1: |
| 999 | *ptr++ = n >> 0; |
| 1000 | break; |
| 1001 | } |
| 1002 | #endif |
| 1003 | return ptr; |
| 1004 | |
| 1005 | } |
| 1006 | |
| 1007 | /* Now we know what sort of opcodes it is, lets build the bytes - |
| 1008 | */ |
| 1009 | #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y; |
| 1010 | static void |
| 1011 | build_bytes (this_try, operand) |
| 1012 | opcode_entry_type * this_try; |
| 1013 | struct z8k_op *operand; |
| 1014 | { |
| 1015 | unsigned int i; |
| 1016 | |
| 1017 | int length; |
| 1018 | char *output; |
| 1019 | char *output_ptr = buffer; |
| 1020 | char part; |
| 1021 | int c; |
| 1022 | char high; |
| 1023 | int nib; |
| 1024 | int nibble; |
| 1025 | unsigned int *class_ptr; |
| 1026 | |
| 1027 | frag_wane (frag_now); |
| 1028 | frag_new (0); |
| 1029 | |
| 1030 | memset (buffer, 20, 0); |
| 1031 | class_ptr = this_try->byte_info; |
| 1032 | top:; |
| 1033 | |
| 1034 | for (nibble = 0; c = *class_ptr++; nibble++) |
| 1035 | { |
| 1036 | |
| 1037 | switch (c & CLASS_MASK) |
| 1038 | { |
| 1039 | default: |
| 1040 | |
| 1041 | abort (); |
| 1042 | case CLASS_ADDRESS: |
| 1043 | /* Direct address, we don't cope with the SS mode right now */ |
| 1044 | if (segmented_mode) |
| 1045 | { |
| 1046 | da_operand->X_add_number |= 0x80000000; |
| 1047 | output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8); |
| 1048 | } |
| 1049 | else |
| 1050 | { |
| 1051 | output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); |
| 1052 | } |
| 1053 | da_operand = 0; |
| 1054 | break; |
| 1055 | case CLASS_DISP8: |
| 1056 | /* pc rel 8 bit */ |
| 1057 | output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2); |
| 1058 | da_operand = 0; |
| 1059 | break; |
| 1060 | |
| 1061 | case CLASS_0DISP7: |
| 1062 | /* pc rel 7 bit */ |
| 1063 | *output_ptr = 0; |
| 1064 | output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); |
| 1065 | da_operand = 0; |
| 1066 | break; |
| 1067 | |
| 1068 | case CLASS_1DISP7: |
| 1069 | /* pc rel 7 bit */ |
| 1070 | *output_ptr = 0x80; |
| 1071 | output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); |
| 1072 | output_ptr[-2] = 0x8; |
| 1073 | da_operand = 0; |
| 1074 | break; |
| 1075 | |
| 1076 | case CLASS_BIT_1OR2: |
| 1077 | *output_ptr = c & 0xf; |
| 1078 | if (imm_operand) |
| 1079 | { |
| 1080 | if (imm_operand->X_add_number == 2) |
| 1081 | { |
| 1082 | *output_ptr |= 2; |
| 1083 | } |
| 1084 | else if (imm_operand->X_add_number != 1) |
| 1085 | { |
| 1086 | as_bad (_("immediate must be 1 or 2")); |
| 1087 | } |
| 1088 | } |
| 1089 | else |
| 1090 | { |
| 1091 | as_bad (_("immediate 1 or 2 expected")); |
| 1092 | } |
| 1093 | output_ptr++; |
| 1094 | break; |
| 1095 | case CLASS_CC: |
| 1096 | *output_ptr++ = the_cc; |
| 1097 | break; |
| 1098 | case CLASS_0CCC: |
| 1099 | *output_ptr++ = the_ctrl; |
| 1100 | break; |
| 1101 | case CLASS_1CCC: |
| 1102 | *output_ptr++ = the_ctrl | 0x8; |
| 1103 | break; |
| 1104 | case CLASS_00II: |
| 1105 | *output_ptr++ = (~the_interrupt & 0x3); |
| 1106 | break; |
| 1107 | case CLASS_01II: |
| 1108 | *output_ptr++ = (~the_interrupt & 0x3) | 0x4; |
| 1109 | break; |
| 1110 | case CLASS_FLAGS: |
| 1111 | *output_ptr++ = the_flags; |
| 1112 | break; |
| 1113 | case CLASS_BIT: |
| 1114 | *output_ptr++ = c & 0xf; |
| 1115 | break; |
| 1116 | case CLASS_REGN0: |
| 1117 | if (reg[c & 0xf] == 0) |
| 1118 | { |
| 1119 | as_bad (_("can't use R0 here")); |
| 1120 | } |
| 1121 | case CLASS_REG: |
| 1122 | case CLASS_REG_BYTE: |
| 1123 | case CLASS_REG_WORD: |
| 1124 | case CLASS_REG_LONG: |
| 1125 | case CLASS_REG_QUAD: |
| 1126 | /* Insert bit mattern of |
| 1127 | right reg */ |
| 1128 | *output_ptr++ = reg[c & 0xf]; |
| 1129 | break; |
| 1130 | case CLASS_DISP: |
| 1131 | output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); |
| 1132 | da_operand = 0; |
| 1133 | break; |
| 1134 | |
| 1135 | case CLASS_IMM: |
| 1136 | { |
| 1137 | nib = 0; |
| 1138 | switch (c & ARG_MASK) |
| 1139 | { |
| 1140 | case ARG_IMM4: |
| 1141 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); |
| 1142 | break; |
| 1143 | case ARG_IMM4M1: |
| 1144 | imm_operand->X_add_number--; |
| 1145 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); |
| 1146 | break; |
| 1147 | case ARG_IMMNMINUS1: |
| 1148 | imm_operand->X_add_number--; |
| 1149 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); |
| 1150 | break; |
| 1151 | case ARG_NIM8: |
| 1152 | imm_operand->X_add_number = -imm_operand->X_add_number; |
| 1153 | case ARG_IMM8: |
| 1154 | output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2); |
| 1155 | break; |
| 1156 | case ARG_IMM16: |
| 1157 | output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4); |
| 1158 | break; |
| 1159 | |
| 1160 | case ARG_IMM32: |
| 1161 | output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8); |
| 1162 | break; |
| 1163 | |
| 1164 | default: |
| 1165 | abort (); |
| 1166 | } |
| 1167 | } |
| 1168 | } |
| 1169 | } |
| 1170 | |
| 1171 | /* Copy from the nibble buffer into the frag */ |
| 1172 | |
| 1173 | { |
| 1174 | int length = (output_ptr - buffer) / 2; |
| 1175 | char *src = buffer; |
| 1176 | char *fragp = frag_more (length); |
| 1177 | |
| 1178 | while (src < output_ptr) |
| 1179 | { |
| 1180 | *fragp = (src[0] << 4) | src[1]; |
| 1181 | src += 2; |
| 1182 | fragp++; |
| 1183 | } |
| 1184 | |
| 1185 | } |
| 1186 | |
| 1187 | } |
| 1188 | |
| 1189 | /* This is the guts of the machine-dependent assembler. STR points to a |
| 1190 | machine dependent instruction. This funciton is supposed to emit |
| 1191 | the frags/bytes it assembles to. |
| 1192 | */ |
| 1193 | |
| 1194 | void |
| 1195 | DEFUN (md_assemble, (str), |
| 1196 | char *str) |
| 1197 | { |
| 1198 | char *op_start; |
| 1199 | char *op_end; |
| 1200 | unsigned int i; |
| 1201 | struct z8k_op operand[3]; |
| 1202 | opcode_entry_type *opcode; |
| 1203 | opcode_entry_type *prev_opcode; |
| 1204 | |
| 1205 | char *dot = 0; |
| 1206 | char c; |
| 1207 | |
| 1208 | /* Drop leading whitespace */ |
| 1209 | while (*str == ' ') |
| 1210 | str++; |
| 1211 | |
| 1212 | /* find the op code end */ |
| 1213 | for (op_start = op_end = str; |
| 1214 | *op_end != 0 && *op_end != ' '; |
| 1215 | op_end++) |
| 1216 | { |
| 1217 | } |
| 1218 | |
| 1219 | ; |
| 1220 | |
| 1221 | if (op_end == op_start) |
| 1222 | { |
| 1223 | as_bad (_("can't find opcode ")); |
| 1224 | } |
| 1225 | c = *op_end; |
| 1226 | |
| 1227 | *op_end = 0; |
| 1228 | |
| 1229 | opcode = (opcode_entry_type *) hash_find (opcode_hash_control, |
| 1230 | op_start); |
| 1231 | |
| 1232 | |
| 1233 | if (opcode == NULL) |
| 1234 | { |
| 1235 | as_bad (_("unknown opcode")); |
| 1236 | return; |
| 1237 | } |
| 1238 | |
| 1239 | if (opcode->opcode == 250) |
| 1240 | { |
| 1241 | /* was really a pseudo op */ |
| 1242 | |
| 1243 | pseudo_typeS *p; |
| 1244 | char oc; |
| 1245 | |
| 1246 | char *old = input_line_pointer; |
| 1247 | *op_end = c; |
| 1248 | |
| 1249 | |
| 1250 | input_line_pointer = op_end; |
| 1251 | |
| 1252 | oc = *old; |
| 1253 | *old = '\n'; |
| 1254 | while (*input_line_pointer == ' ') |
| 1255 | input_line_pointer++; |
| 1256 | p = (pseudo_typeS *) (opcode->func); |
| 1257 | |
| 1258 | (p->poc_handler) (p->poc_val); |
| 1259 | input_line_pointer = old; |
| 1260 | *old = oc; |
| 1261 | } |
| 1262 | else |
| 1263 | { |
| 1264 | input_line_pointer = get_operands (opcode, op_end, |
| 1265 | operand); |
| 1266 | prev_opcode = opcode; |
| 1267 | |
| 1268 | opcode = get_specific (opcode, operand); |
| 1269 | |
| 1270 | if (opcode == 0) |
| 1271 | { |
| 1272 | /* Couldn't find an opcode which matched the operands */ |
| 1273 | char *where = frag_more (2); |
| 1274 | |
| 1275 | where[0] = 0x0; |
| 1276 | where[1] = 0x0; |
| 1277 | |
| 1278 | as_bad (_("Can't find opcode to match operands")); |
| 1279 | return; |
| 1280 | } |
| 1281 | |
| 1282 | build_bytes (opcode, operand); |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | void |
| 1287 | DEFUN (tc_crawl_symbol_chain, (headers), |
| 1288 | object_headers * headers) |
| 1289 | { |
| 1290 | printf (_("call to tc_crawl_symbol_chain \n")); |
| 1291 | } |
| 1292 | |
| 1293 | symbolS * |
| 1294 | DEFUN (md_undefined_symbol, (name), |
| 1295 | char *name) |
| 1296 | { |
| 1297 | return 0; |
| 1298 | } |
| 1299 | |
| 1300 | void |
| 1301 | DEFUN (tc_headers_hook, (headers), |
| 1302 | object_headers * headers) |
| 1303 | { |
| 1304 | printf (_("call to tc_headers_hook \n")); |
| 1305 | } |
| 1306 | |
| 1307 | /* Various routines to kill one day */ |
| 1308 | /* Equal to MAX_PRECISION in atof-ieee.c */ |
| 1309 | #define MAX_LITTLENUMS 6 |
| 1310 | |
| 1311 | /* Turn a string in input_line_pointer into a floating point constant of type |
| 1312 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS |
| 1313 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. |
| 1314 | */ |
| 1315 | char * |
| 1316 | md_atof (type, litP, sizeP) |
| 1317 | char type; |
| 1318 | char *litP; |
| 1319 | int *sizeP; |
| 1320 | { |
| 1321 | int prec; |
| 1322 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; |
| 1323 | LITTLENUM_TYPE *wordP; |
| 1324 | char *t; |
| 1325 | char *atof_ieee (); |
| 1326 | |
| 1327 | switch (type) |
| 1328 | { |
| 1329 | case 'f': |
| 1330 | case 'F': |
| 1331 | case 's': |
| 1332 | case 'S': |
| 1333 | prec = 2; |
| 1334 | break; |
| 1335 | |
| 1336 | case 'd': |
| 1337 | case 'D': |
| 1338 | case 'r': |
| 1339 | case 'R': |
| 1340 | prec = 4; |
| 1341 | break; |
| 1342 | |
| 1343 | case 'x': |
| 1344 | case 'X': |
| 1345 | prec = 6; |
| 1346 | break; |
| 1347 | |
| 1348 | case 'p': |
| 1349 | case 'P': |
| 1350 | prec = 6; |
| 1351 | break; |
| 1352 | |
| 1353 | default: |
| 1354 | *sizeP = 0; |
| 1355 | return _("Bad call to MD_ATOF()"); |
| 1356 | } |
| 1357 | t = atof_ieee (input_line_pointer, type, words); |
| 1358 | if (t) |
| 1359 | input_line_pointer = t; |
| 1360 | |
| 1361 | *sizeP = prec * sizeof (LITTLENUM_TYPE); |
| 1362 | for (wordP = words; prec--;) |
| 1363 | { |
| 1364 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); |
| 1365 | litP += sizeof (LITTLENUM_TYPE); |
| 1366 | } |
| 1367 | return 0; |
| 1368 | } |
| 1369 | \f |
| 1370 | CONST char *md_shortopts = "z:"; |
| 1371 | struct option md_longopts[] = { |
| 1372 | {NULL, no_argument, NULL, 0} |
| 1373 | }; |
| 1374 | size_t md_longopts_size = sizeof(md_longopts); |
| 1375 | |
| 1376 | int |
| 1377 | md_parse_option (c, arg) |
| 1378 | int c; |
| 1379 | char *arg; |
| 1380 | { |
| 1381 | switch (c) |
| 1382 | { |
| 1383 | case 'z': |
| 1384 | if (!strcmp (arg, "8001")) |
| 1385 | s_segm (); |
| 1386 | else if (!strcmp (arg, "8002")) |
| 1387 | s_unseg (); |
| 1388 | else |
| 1389 | { |
| 1390 | as_bad (_("invalid architecture -z%s"), arg); |
| 1391 | return 0; |
| 1392 | } |
| 1393 | break; |
| 1394 | |
| 1395 | default: |
| 1396 | return 0; |
| 1397 | } |
| 1398 | |
| 1399 | return 1; |
| 1400 | } |
| 1401 | |
| 1402 | void |
| 1403 | md_show_usage (stream) |
| 1404 | FILE *stream; |
| 1405 | { |
| 1406 | fprintf(stream, _("\ |
| 1407 | Z8K options:\n\ |
| 1408 | -z8001 generate segmented code\n\ |
| 1409 | -z8002 generate unsegmented code\n")); |
| 1410 | } |
| 1411 | \f |
| 1412 | void |
| 1413 | tc_aout_fix_to_chars () |
| 1414 | { |
| 1415 | printf (_("call to tc_aout_fix_to_chars \n")); |
| 1416 | abort (); |
| 1417 | } |
| 1418 | |
| 1419 | void |
| 1420 | md_convert_frag (headers, seg, fragP) |
| 1421 | object_headers *headers; |
| 1422 | segT seg; |
| 1423 | fragS *fragP; |
| 1424 | { |
| 1425 | printf (_("call to md_convert_frag \n")); |
| 1426 | abort (); |
| 1427 | } |
| 1428 | |
| 1429 | valueT |
| 1430 | DEFUN (md_section_align, (seg, size), |
| 1431 | segT seg AND |
| 1432 | valueT size) |
| 1433 | { |
| 1434 | return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg])); |
| 1435 | |
| 1436 | } |
| 1437 | |
| 1438 | void |
| 1439 | md_apply_fix (fixP, val) |
| 1440 | fixS *fixP; |
| 1441 | long val; |
| 1442 | { |
| 1443 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 1444 | |
| 1445 | switch (fixP->fx_r_type) |
| 1446 | { |
| 1447 | case R_IMM4L: |
| 1448 | buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf); |
| 1449 | break; |
| 1450 | |
| 1451 | case R_JR: |
| 1452 | |
| 1453 | *buf++ = val; |
| 1454 | /* if (val != 0) abort();*/ |
| 1455 | break; |
| 1456 | |
| 1457 | case R_DISP7: |
| 1458 | |
| 1459 | *buf++ += val; |
| 1460 | /* if (val != 0) abort();*/ |
| 1461 | break; |
| 1462 | |
| 1463 | case R_IMM8: |
| 1464 | buf[0] += val; |
| 1465 | break; |
| 1466 | case R_IMM16: |
| 1467 | *buf++ = (val >> 8); |
| 1468 | *buf++ = val; |
| 1469 | break; |
| 1470 | case R_IMM32: |
| 1471 | *buf++ = (val >> 24); |
| 1472 | *buf++ = (val >> 16); |
| 1473 | *buf++ = (val >> 8); |
| 1474 | *buf++ = val; |
| 1475 | break; |
| 1476 | #if 0 |
| 1477 | case R_DA | R_SEG: |
| 1478 | *buf++ = (val >> 16); |
| 1479 | *buf++ = 0x00; |
| 1480 | *buf++ = (val >> 8); |
| 1481 | *buf++ = val; |
| 1482 | break; |
| 1483 | #endif |
| 1484 | |
| 1485 | case 0: |
| 1486 | md_number_to_chars (buf, val, fixP->fx_size); |
| 1487 | break; |
| 1488 | |
| 1489 | default: |
| 1490 | abort (); |
| 1491 | |
| 1492 | } |
| 1493 | } |
| 1494 | |
| 1495 | int |
| 1496 | md_estimate_size_before_relax (fragP, segment_type) |
| 1497 | register fragS *fragP; |
| 1498 | register segT segment_type; |
| 1499 | { |
| 1500 | printf (_("call tomd_estimate_size_before_relax \n")); |
| 1501 | abort (); |
| 1502 | } |
| 1503 | |
| 1504 | /* Put number into target byte order */ |
| 1505 | |
| 1506 | void |
| 1507 | DEFUN (md_number_to_chars, (ptr, use, nbytes), |
| 1508 | char *ptr AND |
| 1509 | valueT use AND |
| 1510 | int nbytes) |
| 1511 | { |
| 1512 | number_to_chars_bigendian (ptr, use, nbytes); |
| 1513 | } |
| 1514 | long |
| 1515 | md_pcrel_from (fixP) |
| 1516 | fixS *fixP; |
| 1517 | { |
| 1518 | abort (); |
| 1519 | } |
| 1520 | |
| 1521 | void |
| 1522 | tc_coff_symbol_emit_hook (s) |
| 1523 | struct symbol *s; |
| 1524 | { |
| 1525 | } |
| 1526 | |
| 1527 | void |
| 1528 | tc_reloc_mangle (fix_ptr, intr, base) |
| 1529 | fixS *fix_ptr; |
| 1530 | struct internal_reloc *intr; |
| 1531 | bfd_vma base; |
| 1532 | |
| 1533 | { |
| 1534 | symbolS *symbol_ptr; |
| 1535 | |
| 1536 | if (fix_ptr->fx_addsy && |
| 1537 | fix_ptr->fx_subsy) |
| 1538 | { |
| 1539 | symbolS *add = fix_ptr->fx_addsy; |
| 1540 | symbolS *sub = fix_ptr->fx_subsy; |
| 1541 | if (S_GET_SEGMENT(add) != S_GET_SEGMENT(sub)) |
| 1542 | { |
| 1543 | as_bad(_("Can't subtract symbols in different sections %s %s"), |
| 1544 | S_GET_NAME(add), S_GET_NAME(sub)); |
| 1545 | } |
| 1546 | else { |
| 1547 | int diff = S_GET_VALUE(add) - S_GET_VALUE(sub); |
| 1548 | fix_ptr->fx_addsy = 0; |
| 1549 | fix_ptr->fx_subsy = 0; |
| 1550 | fix_ptr->fx_offset += diff; |
| 1551 | } |
| 1552 | } |
| 1553 | symbol_ptr = fix_ptr->fx_addsy; |
| 1554 | |
| 1555 | /* If this relocation is attached to a symbol then it's ok |
| 1556 | to output it */ |
| 1557 | if (fix_ptr->fx_r_type == 0) |
| 1558 | { |
| 1559 | /* cons likes to create reloc32's whatever the size of the reloc.. */ |
| 1560 | switch (fix_ptr->fx_size) |
| 1561 | { |
| 1562 | case 2: |
| 1563 | intr->r_type = R_IMM16; |
| 1564 | break; |
| 1565 | case 1: |
| 1566 | intr->r_type = R_IMM8; |
| 1567 | break; |
| 1568 | case 4: |
| 1569 | intr->r_type = R_IMM32; |
| 1570 | break; |
| 1571 | default: |
| 1572 | abort (); |
| 1573 | } |
| 1574 | |
| 1575 | } |
| 1576 | else |
| 1577 | { |
| 1578 | intr->r_type = fix_ptr->fx_r_type; |
| 1579 | } |
| 1580 | |
| 1581 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; |
| 1582 | intr->r_offset = fix_ptr->fx_offset; |
| 1583 | |
| 1584 | if (symbol_ptr) |
| 1585 | intr->r_symndx = symbol_ptr->sy_number; |
| 1586 | else |
| 1587 | intr->r_symndx = -1; |
| 1588 | } |
| 1589 | |