| 1 | /* tc-z8k.c -- Assemble code for the Zilog Z800n |
| 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003, |
| 3 | 2005, 2006, 2007, 2009 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 3, 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, 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | /* Written By Steve Chamberlain <sac@cygnus.com>. */ |
| 23 | |
| 24 | #include "as.h" |
| 25 | #include "safe-ctype.h" |
| 26 | #define DEFINE_TABLE |
| 27 | #include "opcodes/z8k-opc.h" |
| 28 | |
| 29 | const char comment_chars[] = "!"; |
| 30 | const char line_comment_chars[] = "#"; |
| 31 | const char line_separator_chars[] = ";"; |
| 32 | |
| 33 | extern int machine; |
| 34 | extern int coff_flags; |
| 35 | int segmented_mode; |
| 36 | |
| 37 | /* This is non-zero if target was set from the command line. */ |
| 38 | static int z8k_target_from_cmdline; |
| 39 | |
| 40 | static void |
| 41 | s_segm (int segm) |
| 42 | { |
| 43 | if (segm) |
| 44 | { |
| 45 | segmented_mode = 1; |
| 46 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8001); |
| 47 | } |
| 48 | else |
| 49 | { |
| 50 | segmented_mode = 0; |
| 51 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8002); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | static void |
| 56 | even (int ignore ATTRIBUTE_UNUSED) |
| 57 | { |
| 58 | frag_align (1, 0, 0); |
| 59 | record_alignment (now_seg, 1); |
| 60 | } |
| 61 | |
| 62 | static int |
| 63 | tohex (int c) |
| 64 | { |
| 65 | if (ISDIGIT (c)) |
| 66 | return c - '0'; |
| 67 | if (ISLOWER (c)) |
| 68 | return c - 'a' + 10; |
| 69 | return c - 'A' + 10; |
| 70 | } |
| 71 | |
| 72 | static void |
| 73 | sval (int ignore ATTRIBUTE_UNUSED) |
| 74 | { |
| 75 | SKIP_WHITESPACE (); |
| 76 | if (*input_line_pointer == '\'') |
| 77 | { |
| 78 | int c; |
| 79 | input_line_pointer++; |
| 80 | c = *input_line_pointer++; |
| 81 | while (c != '\'') |
| 82 | { |
| 83 | if (c == '%') |
| 84 | { |
| 85 | c = (tohex (input_line_pointer[0]) << 4) |
| 86 | | tohex (input_line_pointer[1]); |
| 87 | input_line_pointer += 2; |
| 88 | } |
| 89 | FRAG_APPEND_1_CHAR (c); |
| 90 | c = *input_line_pointer++; |
| 91 | } |
| 92 | demand_empty_rest_of_line (); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /* This table describes all the machine specific pseudo-ops the assembler |
| 97 | has to support. The fields are: |
| 98 | pseudo-op name without dot |
| 99 | function to call to execute this pseudo-op |
| 100 | Integer arg to pass to the function |
| 101 | */ |
| 102 | |
| 103 | const pseudo_typeS md_pseudo_table[] = { |
| 104 | {"int" , cons , 2}, |
| 105 | {"data.b" , cons , 1}, |
| 106 | {"data.w" , cons , 2}, |
| 107 | {"data.l" , cons , 4}, |
| 108 | {"form" , listing_psize , 0}, |
| 109 | {"heading", listing_title , 0}, |
| 110 | {"import" , s_ignore , 0}, |
| 111 | {"page" , listing_eject , 0}, |
| 112 | {"program", s_ignore , 0}, |
| 113 | {"z8001" , s_segm , 1}, |
| 114 | {"z8002" , s_segm , 0}, |
| 115 | |
| 116 | {"segm" , s_segm , 1}, |
| 117 | {"unsegm" , s_segm , 0}, |
| 118 | {"unseg" , s_segm , 0}, |
| 119 | {"name" , s_app_file , 0}, |
| 120 | {"global" , s_globl , 0}, |
| 121 | {"wval" , cons , 2}, |
| 122 | {"lval" , cons , 4}, |
| 123 | {"bval" , cons , 1}, |
| 124 | {"sval" , sval , 0}, |
| 125 | {"rsect" , obj_coff_section, 0}, |
| 126 | {"sect" , obj_coff_section, 0}, |
| 127 | {"block" , s_space , 0}, |
| 128 | {"even" , even , 0}, |
| 129 | {0 , 0 , 0} |
| 130 | }; |
| 131 | |
| 132 | const char EXP_CHARS[] = "eE"; |
| 133 | |
| 134 | /* Chars that mean this number is a floating point constant. |
| 135 | As in 0f12.456 |
| 136 | or 0d1.2345e12 */ |
| 137 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
| 138 | |
| 139 | /* Opcode mnemonics. */ |
| 140 | static struct hash_control *opcode_hash_control; |
| 141 | |
| 142 | void |
| 143 | md_begin (void) |
| 144 | { |
| 145 | const opcode_entry_type *opcode; |
| 146 | int idx = -1; |
| 147 | |
| 148 | opcode_hash_control = hash_new (); |
| 149 | |
| 150 | for (opcode = z8k_table; opcode->name; opcode++) |
| 151 | { |
| 152 | /* Only enter unique codes into the table. */ |
| 153 | if (idx != opcode->idx) |
| 154 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); |
| 155 | idx = opcode->idx; |
| 156 | } |
| 157 | |
| 158 | /* Default to z8002. */ |
| 159 | if (! z8k_target_from_cmdline) |
| 160 | s_segm (0); |
| 161 | |
| 162 | /* Insert the pseudo ops, too. */ |
| 163 | for (idx = 0; md_pseudo_table[idx].poc_name; idx++) |
| 164 | { |
| 165 | opcode_entry_type *fake_opcode; |
| 166 | fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type)); |
| 167 | fake_opcode->name = md_pseudo_table[idx].poc_name; |
| 168 | fake_opcode->func = (void *) (md_pseudo_table + idx); |
| 169 | fake_opcode->opcode = 250; |
| 170 | hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | typedef struct z8k_op { |
| 175 | /* CLASS_REG_xxx. */ |
| 176 | int regsize; |
| 177 | |
| 178 | /* 0 .. 15. */ |
| 179 | unsigned int reg; |
| 180 | |
| 181 | int mode; |
| 182 | |
| 183 | /* Any other register associated with the mode. */ |
| 184 | unsigned int x_reg; |
| 185 | |
| 186 | /* Any expression. */ |
| 187 | expressionS exp; |
| 188 | } op_type; |
| 189 | |
| 190 | static expressionS *da_operand; |
| 191 | static expressionS *imm_operand; |
| 192 | |
| 193 | static int reg[16]; |
| 194 | static int the_cc; |
| 195 | static int the_ctrl; |
| 196 | static int the_flags; |
| 197 | static int the_interrupt; |
| 198 | |
| 199 | /* Determine register number. src points to the ascii number |
| 200 | (after "rl", "rh", "r", "rr", or "rq"). If a character |
| 201 | outside the set of {0,',',')','('} follows the number, |
| 202 | return NULL to indicate that it's not a valid register |
| 203 | number. */ |
| 204 | |
| 205 | static char * |
| 206 | whatreg (unsigned int *preg, char *src) |
| 207 | { |
| 208 | unsigned int new_reg; |
| 209 | |
| 210 | /* src[0] is already known to be a digit. */ |
| 211 | if (ISDIGIT (src[1])) |
| 212 | { |
| 213 | new_reg = (src[0] - '0') * 10 + src[1] - '0'; |
| 214 | src += 2; |
| 215 | } |
| 216 | else |
| 217 | { |
| 218 | new_reg = (src[0] - '0'); |
| 219 | src += 1; |
| 220 | } |
| 221 | |
| 222 | if (src[0] != 0 && src[0] != ',' && src[0] != '(' && src[0] != ')') |
| 223 | return NULL; |
| 224 | |
| 225 | *preg = new_reg; |
| 226 | return src; |
| 227 | } |
| 228 | |
| 229 | /* Parse operands |
| 230 | |
| 231 | rh0-rh7, rl0-rl7 |
| 232 | r0-r15 |
| 233 | rr0-rr14 |
| 234 | rq0--rq12 |
| 235 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp |
| 236 | r0l,r0h,..r7l,r7h |
| 237 | @WREG |
| 238 | @WREG+ |
| 239 | @-WREG |
| 240 | #const |
| 241 | */ |
| 242 | |
| 243 | /* Try to parse a reg name. Return a pointer to the first character |
| 244 | in SRC after the reg name. */ |
| 245 | |
| 246 | static char * |
| 247 | parse_reg (char *src, int *mode, unsigned int *preg) |
| 248 | { |
| 249 | char *res = NULL; |
| 250 | char regno; |
| 251 | |
| 252 | /* Check for stack pointer "sp" alias. */ |
| 253 | if ((src[0] == 's' || src[0] == 'S') |
| 254 | && (src[1] == 'p' || src[1] == 'P') |
| 255 | && (src[2] == 0 || src[2] == ',')) |
| 256 | { |
| 257 | if (segmented_mode) |
| 258 | { |
| 259 | *mode = CLASS_REG_LONG; |
| 260 | *preg = 14; |
| 261 | } |
| 262 | else |
| 263 | { |
| 264 | *mode = CLASS_REG_WORD; |
| 265 | *preg = 15; |
| 266 | } |
| 267 | return src + 2; |
| 268 | } |
| 269 | |
| 270 | if (src[0] == 'r' || src[0] == 'R') |
| 271 | { |
| 272 | if (src[1] == 'r' || src[1] == 'R') |
| 273 | { |
| 274 | if (src[2] < '0' || src[2] > '9') |
| 275 | return NULL; /* Assume no register name but a label starting with 'rr'. */ |
| 276 | *mode = CLASS_REG_LONG; |
| 277 | res = whatreg (preg, src + 2); |
| 278 | if (res == NULL) |
| 279 | return NULL; /* Not a valid register name. */ |
| 280 | regno = *preg; |
| 281 | if (regno > 14) |
| 282 | as_bad (_("register rr%d out of range"), regno); |
| 283 | if (regno & 1) |
| 284 | as_bad (_("register rr%d does not exist"), regno); |
| 285 | } |
| 286 | else if (src[1] == 'h' || src[1] == 'H') |
| 287 | { |
| 288 | if (src[2] < '0' || src[2] > '9') |
| 289 | return NULL; /* Assume no register name but a label starting with 'rh'. */ |
| 290 | *mode = CLASS_REG_BYTE; |
| 291 | res = whatreg (preg, src + 2); |
| 292 | if (res == NULL) |
| 293 | return NULL; /* Not a valid register name. */ |
| 294 | regno = *preg; |
| 295 | if (regno > 7) |
| 296 | as_bad (_("register rh%d out of range"), regno); |
| 297 | } |
| 298 | else if (src[1] == 'l' || src[1] == 'L') |
| 299 | { |
| 300 | if (src[2] < '0' || src[2] > '9') |
| 301 | return NULL; /* Assume no register name but a label starting with 'rl'. */ |
| 302 | *mode = CLASS_REG_BYTE; |
| 303 | res = whatreg (preg, src + 2); |
| 304 | if (res == NULL) |
| 305 | return NULL; /* Not a valid register name. */ |
| 306 | regno = *preg; |
| 307 | if (regno > 7) |
| 308 | as_bad (_("register rl%d out of range"), regno); |
| 309 | *preg += 8; |
| 310 | } |
| 311 | else if (src[1] == 'q' || src[1] == 'Q') |
| 312 | { |
| 313 | if (src[2] < '0' || src[2] > '9') |
| 314 | return NULL; /* Assume no register name but a label starting with 'rq'. */ |
| 315 | *mode = CLASS_REG_QUAD; |
| 316 | res = whatreg (preg, src + 2); |
| 317 | if (res == NULL) |
| 318 | return NULL; /* Not a valid register name. */ |
| 319 | regno = *preg; |
| 320 | if (regno > 12) |
| 321 | as_bad (_("register rq%d out of range"), regno); |
| 322 | if (regno & 3) |
| 323 | as_bad (_("register rq%d does not exist"), regno); |
| 324 | } |
| 325 | else |
| 326 | { |
| 327 | if (src[1] < '0' || src[1] > '9') |
| 328 | return NULL; /* Assume no register name but a label starting with 'r'. */ |
| 329 | *mode = CLASS_REG_WORD; |
| 330 | res = whatreg (preg, src + 1); |
| 331 | if (res == NULL) |
| 332 | return NULL; /* Not a valid register name. */ |
| 333 | regno = *preg; |
| 334 | if (regno > 15) |
| 335 | as_bad (_("register r%d out of range"), regno); |
| 336 | } |
| 337 | } |
| 338 | return res; |
| 339 | } |
| 340 | |
| 341 | static char * |
| 342 | parse_exp (char *s, expressionS *op) |
| 343 | { |
| 344 | char *save = input_line_pointer; |
| 345 | char *new_pointer; |
| 346 | |
| 347 | input_line_pointer = s; |
| 348 | expression (op); |
| 349 | if (op->X_op == O_absent) |
| 350 | as_bad (_("missing operand")); |
| 351 | new_pointer = input_line_pointer; |
| 352 | input_line_pointer = save; |
| 353 | return new_pointer; |
| 354 | } |
| 355 | |
| 356 | /* The many forms of operand: |
| 357 | |
| 358 | <rb> |
| 359 | <r> |
| 360 | <rr> |
| 361 | <rq> |
| 362 | @r |
| 363 | #exp |
| 364 | exp |
| 365 | exp(r) |
| 366 | r(#exp) |
| 367 | r(r) |
| 368 | */ |
| 369 | |
| 370 | static char * |
| 371 | checkfor (char *ptr, char what) |
| 372 | { |
| 373 | if (*ptr == what) |
| 374 | ptr++; |
| 375 | else |
| 376 | as_bad (_("expected %c"), what); |
| 377 | |
| 378 | return ptr; |
| 379 | } |
| 380 | |
| 381 | /* Make sure the mode supplied is the size of a word. */ |
| 382 | |
| 383 | static void |
| 384 | regword (int mode, char *string) |
| 385 | { |
| 386 | int ok; |
| 387 | |
| 388 | ok = CLASS_REG_WORD; |
| 389 | if (ok != mode) |
| 390 | { |
| 391 | as_bad (_("register is wrong size for a word %s"), string); |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | /* Make sure the mode supplied is the size of an address. */ |
| 396 | |
| 397 | static void |
| 398 | regaddr (int mode, 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 | int value; |
| 411 | char *name; |
| 412 | }; |
| 413 | |
| 414 | static struct ctrl_names ctrl_table[] = { |
| 415 | { 0x1, "flags" }, /* ldctlb only. */ |
| 416 | { 0x2, "fcw" }, /* ldctl only. Applies to all remaining control registers. */ |
| 417 | { 0x3, "refresh" }, |
| 418 | { 0x4, "psapseg" }, |
| 419 | { 0x5, "psapoff" }, |
| 420 | { 0x5, "psap" }, |
| 421 | { 0x6, "nspseg" }, |
| 422 | { 0x7, "nspoff" }, |
| 423 | { 0x7, "nsp" }, |
| 424 | { 0 , 0 } |
| 425 | }; |
| 426 | |
| 427 | static void |
| 428 | get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
| 429 | { |
| 430 | char *src = *ptr; |
| 431 | int i, l; |
| 432 | |
| 433 | while (*src == ' ') |
| 434 | src++; |
| 435 | |
| 436 | mode->mode = CLASS_CTRL; |
| 437 | for (i = 0; ctrl_table[i].name; i++) |
| 438 | { |
| 439 | l = strlen (ctrl_table[i].name); |
| 440 | if (! strncasecmp (ctrl_table[i].name, src, l)) |
| 441 | { |
| 442 | the_ctrl = ctrl_table[i].value; |
| 443 | if (*(src + l) && *(src + l) != ',') |
| 444 | break; |
| 445 | *ptr = src + l; /* Valid control name found: "consume" it. */ |
| 446 | return; |
| 447 | } |
| 448 | } |
| 449 | the_ctrl = 0; |
| 450 | } |
| 451 | |
| 452 | struct flag_names { |
| 453 | int value; |
| 454 | char *name; |
| 455 | }; |
| 456 | |
| 457 | static struct flag_names flag_table[] = { |
| 458 | { 0x1, "P" }, |
| 459 | { 0x1, "V" }, |
| 460 | { 0x2, "S" }, |
| 461 | { 0x4, "Z" }, |
| 462 | { 0x8, "C" }, |
| 463 | { 0x0, "+" }, |
| 464 | { 0x0, "," }, |
| 465 | { 0, 0 } |
| 466 | }; |
| 467 | |
| 468 | static void |
| 469 | get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
| 470 | { |
| 471 | char *src = *ptr; |
| 472 | char c; |
| 473 | int i; |
| 474 | int j; |
| 475 | |
| 476 | while (*src == ' ') |
| 477 | src++; |
| 478 | |
| 479 | mode->mode = CLASS_FLAGS; |
| 480 | the_flags = 0; |
| 481 | for (j = 0; j <= 9; j++) |
| 482 | { |
| 483 | if (!src[j]) |
| 484 | goto done; |
| 485 | c = TOUPPER(src[j]); |
| 486 | for (i = 0; flag_table[i].name; i++) |
| 487 | { |
| 488 | if (flag_table[i].name[0] == c) |
| 489 | { |
| 490 | the_flags = the_flags | flag_table[i].value; |
| 491 | goto match; |
| 492 | } |
| 493 | } |
| 494 | goto done; |
| 495 | match: |
| 496 | ; |
| 497 | } |
| 498 | done: |
| 499 | *ptr = src + j; |
| 500 | } |
| 501 | |
| 502 | struct interrupt_names { |
| 503 | int value; |
| 504 | char *name; |
| 505 | }; |
| 506 | |
| 507 | static struct interrupt_names intr_table[] = { |
| 508 | { 0x1, "nvi" }, |
| 509 | { 0x2, "vi" }, |
| 510 | { 0x3, "both" }, |
| 511 | { 0x3, "all" }, |
| 512 | { 0, 0 } |
| 513 | }; |
| 514 | |
| 515 | static void |
| 516 | get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
| 517 | { |
| 518 | char *src = *ptr; |
| 519 | int i, l; |
| 520 | |
| 521 | while (*src == ' ') |
| 522 | src++; |
| 523 | |
| 524 | mode->mode = CLASS_IMM; |
| 525 | the_interrupt = 0; |
| 526 | |
| 527 | while (*src) |
| 528 | { |
| 529 | for (i = 0; intr_table[i].name; i++) |
| 530 | { |
| 531 | l = strlen (intr_table[i].name); |
| 532 | if (! strncasecmp (intr_table[i].name, src, l)) |
| 533 | { |
| 534 | the_interrupt |= intr_table[i].value; |
| 535 | if (*(src + l) && *(src + l) != ',') |
| 536 | { |
| 537 | *ptr = src + l; |
| 538 | invalid: |
| 539 | as_bad (_("unknown interrupt %s"), src); |
| 540 | while (**ptr && ! is_end_of_line[(unsigned char) **ptr]) |
| 541 | (*ptr)++; /* Consume rest of line. */ |
| 542 | return; |
| 543 | } |
| 544 | src += l; |
| 545 | if (! *src) |
| 546 | { |
| 547 | *ptr = src; |
| 548 | return; |
| 549 | } |
| 550 | } |
| 551 | } |
| 552 | if (*src == ',') |
| 553 | src++; |
| 554 | else |
| 555 | { |
| 556 | *ptr = src; |
| 557 | goto invalid; |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | /* No interrupt type specified, opcode won't do anything. */ |
| 562 | as_warn (_("opcode has no effect")); |
| 563 | the_interrupt = 0x0; |
| 564 | } |
| 565 | |
| 566 | struct cc_names { |
| 567 | int value; |
| 568 | char *name; |
| 569 | }; |
| 570 | |
| 571 | static struct cc_names table[] = { |
| 572 | { 0x0, "f" }, |
| 573 | { 0x1, "lt" }, |
| 574 | { 0x2, "le" }, |
| 575 | { 0x3, "ule" }, |
| 576 | { 0x4, "ov/pe" }, |
| 577 | { 0x4, "ov" }, |
| 578 | { 0x4, "pe/ov" }, |
| 579 | { 0x4, "pe" }, |
| 580 | { 0x5, "mi" }, |
| 581 | { 0x6, "eq" }, |
| 582 | { 0x6, "z" }, |
| 583 | { 0x7, "c/ult" }, |
| 584 | { 0x7, "c" }, |
| 585 | { 0x7, "ult/c" }, |
| 586 | { 0x7, "ult" }, |
| 587 | { 0x8, "t" }, |
| 588 | { 0x9, "ge" }, |
| 589 | { 0xa, "gt" }, |
| 590 | { 0xb, "ugt" }, |
| 591 | { 0xc, "nov/po" }, |
| 592 | { 0xc, "nov" }, |
| 593 | { 0xc, "po/nov" }, |
| 594 | { 0xc, "po" }, |
| 595 | { 0xd, "pl" }, |
| 596 | { 0xe, "ne" }, |
| 597 | { 0xe, "nz" }, |
| 598 | { 0xf, "nc/uge" }, |
| 599 | { 0xf, "nc" }, |
| 600 | { 0xf, "uge/nc" }, |
| 601 | { 0xf, "uge" }, |
| 602 | { 0 , 0 } |
| 603 | }; |
| 604 | |
| 605 | static void |
| 606 | get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
| 607 | { |
| 608 | char *src = *ptr; |
| 609 | int i, l; |
| 610 | |
| 611 | while (*src == ' ') |
| 612 | src++; |
| 613 | |
| 614 | mode->mode = CLASS_CC; |
| 615 | for (i = 0; table[i].name; i++) |
| 616 | { |
| 617 | l = strlen (table[i].name); |
| 618 | if (! strncasecmp (table[i].name, src, l)) |
| 619 | { |
| 620 | the_cc = table[i].value; |
| 621 | if (*(src + l) && *(src + l) != ',') |
| 622 | break; |
| 623 | *ptr = src + l; /* Valid cc found: "consume" it. */ |
| 624 | return; |
| 625 | } |
| 626 | } |
| 627 | the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */ |
| 628 | } |
| 629 | |
| 630 | static void |
| 631 | get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
| 632 | { |
| 633 | char *src = *ptr; |
| 634 | char *end; |
| 635 | |
| 636 | mode->mode = 0; |
| 637 | |
| 638 | while (*src == ' ') |
| 639 | src++; |
| 640 | if (*src == '#') |
| 641 | { |
| 642 | mode->mode = CLASS_IMM; |
| 643 | imm_operand = &(mode->exp); |
| 644 | src = parse_exp (src + 1, &(mode->exp)); |
| 645 | } |
| 646 | else if (*src == '@') |
| 647 | { |
| 648 | mode->mode = CLASS_IR; |
| 649 | src = parse_reg (src + 1, &mode->regsize, &mode->reg); |
| 650 | } |
| 651 | else |
| 652 | { |
| 653 | unsigned int regn; |
| 654 | |
| 655 | end = parse_reg (src, &mode->mode, ®n); |
| 656 | |
| 657 | if (end) |
| 658 | { |
| 659 | int nw; |
| 660 | unsigned int nr; |
| 661 | |
| 662 | src = end; |
| 663 | if (*src == '(') |
| 664 | { |
| 665 | src++; |
| 666 | end = parse_reg (src, &nw, &nr); |
| 667 | if (end) |
| 668 | { |
| 669 | /* Got Ra(Rb). */ |
| 670 | src = end; |
| 671 | |
| 672 | if (*src != ')') |
| 673 | as_bad (_("Missing ) in ra(rb)")); |
| 674 | else |
| 675 | src++; |
| 676 | |
| 677 | regaddr (mode->mode, "ra(rb) ra"); |
| 678 | mode->mode = CLASS_BX; |
| 679 | mode->reg = regn; |
| 680 | mode->x_reg = nr; |
| 681 | reg[ARG_RX] = nr; |
| 682 | } |
| 683 | else |
| 684 | { |
| 685 | /* Got Ra(disp). */ |
| 686 | if (*src == '#') |
| 687 | src++; |
| 688 | src = parse_exp (src, &(mode->exp)); |
| 689 | src = checkfor (src, ')'); |
| 690 | mode->mode = CLASS_BA; |
| 691 | mode->reg = regn; |
| 692 | mode->x_reg = 0; |
| 693 | imm_operand = &(mode->exp); |
| 694 | } |
| 695 | } |
| 696 | else |
| 697 | { |
| 698 | mode->reg = regn; |
| 699 | mode->x_reg = 0; |
| 700 | } |
| 701 | } |
| 702 | else |
| 703 | { |
| 704 | /* No initial reg. */ |
| 705 | src = parse_exp (src, &(mode->exp)); |
| 706 | if (*src == '(') |
| 707 | { |
| 708 | src++; |
| 709 | end = parse_reg (src, &(mode->mode), ®n); |
| 710 | regword (mode->mode, "addr(Ra) ra"); |
| 711 | mode->mode = CLASS_X; |
| 712 | mode->reg = regn; |
| 713 | mode->x_reg = 0; |
| 714 | da_operand = &(mode->exp); |
| 715 | src = checkfor (end, ')'); |
| 716 | } |
| 717 | else |
| 718 | { |
| 719 | /* Just an address. */ |
| 720 | mode->mode = CLASS_DA; |
| 721 | mode->reg = 0; |
| 722 | mode->x_reg = 0; |
| 723 | da_operand = &(mode->exp); |
| 724 | } |
| 725 | } |
| 726 | } |
| 727 | *ptr = src; |
| 728 | } |
| 729 | |
| 730 | static char * |
| 731 | get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand) |
| 732 | { |
| 733 | char *ptr = op_end; |
| 734 | char *savptr; |
| 735 | |
| 736 | switch (opcode->noperands) |
| 737 | { |
| 738 | case 0: |
| 739 | operand[0].mode = 0; |
| 740 | operand[1].mode = 0; |
| 741 | while (*ptr == ' ') |
| 742 | ptr++; |
| 743 | break; |
| 744 | |
| 745 | case 1: |
| 746 | if (opcode->arg_info[0] == CLASS_CC) |
| 747 | { |
| 748 | get_cc_operand (&ptr, operand + 0, 0); |
| 749 | while (*ptr == ' ') |
| 750 | ptr++; |
| 751 | if (*ptr && ! is_end_of_line[(unsigned char) *ptr]) |
| 752 | { |
| 753 | as_bad (_("invalid condition code '%s'"), ptr); |
| 754 | while (*ptr && ! is_end_of_line[(unsigned char) *ptr]) |
| 755 | ptr++; /* Consume rest of line. */ |
| 756 | } |
| 757 | } |
| 758 | else if (opcode->arg_info[0] == CLASS_FLAGS) |
| 759 | { |
| 760 | get_flags_operand (&ptr, operand + 0, 0); |
| 761 | while (*ptr == ' ') |
| 762 | ptr++; |
| 763 | if (*ptr && ! is_end_of_line[(unsigned char) *ptr]) |
| 764 | { |
| 765 | as_bad (_("invalid flag '%s'"), ptr); |
| 766 | while (*ptr && ! is_end_of_line[(unsigned char) *ptr]) |
| 767 | ptr++; /* Consume rest of line. */ |
| 768 | } |
| 769 | } |
| 770 | else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2))) |
| 771 | get_interrupt_operand (&ptr, operand + 0, 0); |
| 772 | else |
| 773 | get_operand (&ptr, operand + 0, 0); |
| 774 | |
| 775 | operand[1].mode = 0; |
| 776 | break; |
| 777 | |
| 778 | case 2: |
| 779 | savptr = ptr; |
| 780 | if (opcode->arg_info[0] == CLASS_CC) |
| 781 | { |
| 782 | get_cc_operand (&ptr, operand + 0, 0); |
| 783 | while (*ptr == ' ') |
| 784 | ptr++; |
| 785 | if (*ptr != ',' && strchr (ptr + 1, ',')) |
| 786 | { |
| 787 | savptr = ptr; |
| 788 | while (*ptr != ',') |
| 789 | ptr++; |
| 790 | *ptr = 0; |
| 791 | ptr++; |
| 792 | as_bad (_("invalid condition code '%s'"), savptr); |
| 793 | } |
| 794 | } |
| 795 | else if (opcode->arg_info[0] == CLASS_CTRL) |
| 796 | { |
| 797 | get_ctrl_operand (&ptr, operand + 0, 0); |
| 798 | |
| 799 | if (the_ctrl == 0) |
| 800 | { |
| 801 | ptr = savptr; |
| 802 | get_operand (&ptr, operand + 0, 0); |
| 803 | |
| 804 | if (ptr == 0) |
| 805 | return NULL; |
| 806 | if (*ptr == ',') |
| 807 | ptr++; |
| 808 | get_ctrl_operand (&ptr, operand + 1, 1); |
| 809 | if (the_ctrl == 0) |
| 810 | return NULL; |
| 811 | return ptr; |
| 812 | } |
| 813 | } |
| 814 | else |
| 815 | get_operand (&ptr, operand + 0, 0); |
| 816 | |
| 817 | if (ptr == 0) |
| 818 | return NULL; |
| 819 | if (*ptr == ',') |
| 820 | ptr++; |
| 821 | get_operand (&ptr, operand + 1, 1); |
| 822 | break; |
| 823 | |
| 824 | case 3: |
| 825 | get_operand (&ptr, operand + 0, 0); |
| 826 | if (*ptr == ',') |
| 827 | ptr++; |
| 828 | get_operand (&ptr, operand + 1, 1); |
| 829 | if (*ptr == ',') |
| 830 | ptr++; |
| 831 | get_operand (&ptr, operand + 2, 2); |
| 832 | break; |
| 833 | |
| 834 | case 4: |
| 835 | get_operand (&ptr, operand + 0, 0); |
| 836 | if (*ptr == ',') |
| 837 | ptr++; |
| 838 | get_operand (&ptr, operand + 1, 1); |
| 839 | if (*ptr == ',') |
| 840 | ptr++; |
| 841 | get_operand (&ptr, operand + 2, 2); |
| 842 | if (*ptr == ',') |
| 843 | ptr++; |
| 844 | get_cc_operand (&ptr, operand + 3, 3); |
| 845 | break; |
| 846 | |
| 847 | default: |
| 848 | abort (); |
| 849 | } |
| 850 | |
| 851 | return ptr; |
| 852 | } |
| 853 | |
| 854 | /* Passed a pointer to a list of opcodes which use different |
| 855 | addressing modes. Return the opcode which matches the opcodes |
| 856 | provided. */ |
| 857 | |
| 858 | static opcode_entry_type * |
| 859 | get_specific (opcode_entry_type *opcode, op_type *operands) |
| 860 | { |
| 861 | opcode_entry_type *this_try = opcode; |
| 862 | int found = 0; |
| 863 | unsigned int noperands = opcode->noperands; |
| 864 | |
| 865 | int this_index = opcode->idx; |
| 866 | |
| 867 | while (this_index == opcode->idx && !found) |
| 868 | { |
| 869 | unsigned int i; |
| 870 | |
| 871 | this_try = opcode++; |
| 872 | for (i = 0; i < noperands; i++) |
| 873 | { |
| 874 | unsigned int mode = operands[i].mode; |
| 875 | |
| 876 | if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO)) |
| 877 | { |
| 878 | mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO; |
| 879 | } |
| 880 | |
| 881 | if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) |
| 882 | { |
| 883 | /* It could be a pc rel operand, if this is a da mode |
| 884 | and we like disps, then insert it. */ |
| 885 | |
| 886 | if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP) |
| 887 | { |
| 888 | /* This is the case. */ |
| 889 | operands[i].mode = CLASS_DISP; |
| 890 | } |
| 891 | else if (mode == CLASS_BA && this_try->arg_info[i]) |
| 892 | { |
| 893 | /* Can't think of a way to turn what we've been |
| 894 | given into something that's OK. */ |
| 895 | goto fail; |
| 896 | } |
| 897 | else if (this_try->arg_info[i] & CLASS_PR) |
| 898 | { |
| 899 | if (mode == CLASS_REG_LONG && segmented_mode) |
| 900 | { |
| 901 | /* OK. */ |
| 902 | } |
| 903 | else if (mode == CLASS_REG_WORD && !segmented_mode) |
| 904 | { |
| 905 | /* OK. */ |
| 906 | } |
| 907 | else |
| 908 | goto fail; |
| 909 | } |
| 910 | else |
| 911 | goto fail; |
| 912 | } |
| 913 | switch (mode & CLASS_MASK) |
| 914 | { |
| 915 | default: |
| 916 | break; |
| 917 | case CLASS_IRO: |
| 918 | if (operands[i].regsize != CLASS_REG_WORD) |
| 919 | as_bad (_("invalid indirect register size")); |
| 920 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; |
| 921 | break; |
| 922 | case CLASS_IR: |
| 923 | if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG) |
| 924 | || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD)) |
| 925 | as_bad (_("invalid indirect register size")); |
| 926 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; |
| 927 | break; |
| 928 | case CLASS_X: |
| 929 | case CLASS_BA: |
| 930 | case CLASS_BX: |
| 931 | case CLASS_DISP: |
| 932 | case CLASS_REG: |
| 933 | case CLASS_REG_WORD: |
| 934 | case CLASS_REG_BYTE: |
| 935 | case CLASS_REG_QUAD: |
| 936 | case CLASS_REG_LONG: |
| 937 | case CLASS_REGN0: |
| 938 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; |
| 939 | break; |
| 940 | case CLASS_CTRL: |
| 941 | if (this_try->opcode == OPC_ldctlb && the_ctrl != 1) |
| 942 | as_bad (_("invalid control register name")); |
| 943 | break; |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | found = 1; |
| 948 | fail: |
| 949 | ; |
| 950 | } |
| 951 | if (found) |
| 952 | return this_try; |
| 953 | else |
| 954 | return 0; |
| 955 | } |
| 956 | |
| 957 | static char buffer[20]; |
| 958 | |
| 959 | static void |
| 960 | newfix (int ptr, int type, int size, expressionS *operand) |
| 961 | { |
| 962 | int is_pcrel = 0; |
| 963 | fixS *fixP; |
| 964 | |
| 965 | /* Size is in nibbles. */ |
| 966 | if (operand->X_add_symbol |
| 967 | || operand->X_op_symbol |
| 968 | || operand->X_add_number) |
| 969 | { |
| 970 | switch(type) |
| 971 | { |
| 972 | case BFD_RELOC_8_PCREL: |
| 973 | case BFD_RELOC_Z8K_CALLR: |
| 974 | case BFD_RELOC_Z8K_DISP7: |
| 975 | is_pcrel = 1; |
| 976 | } |
| 977 | fixP = fix_new_exp (frag_now, ptr, size / 2, |
| 978 | operand, is_pcrel, type); |
| 979 | if (is_pcrel) |
| 980 | fixP->fx_no_overflow = 1; |
| 981 | } |
| 982 | } |
| 983 | |
| 984 | static char * |
| 985 | apply_fix (char *ptr, int type, expressionS *operand, int size) |
| 986 | { |
| 987 | long n = operand->X_add_number; |
| 988 | |
| 989 | /* size is in nibbles. */ |
| 990 | |
| 991 | newfix ((ptr - buffer) / 2, type, size + 1, operand); |
| 992 | switch (size) |
| 993 | { |
| 994 | case 8: /* 8 nibbles == 32 bits. */ |
| 995 | *ptr++ = n >> 28; |
| 996 | *ptr++ = n >> 24; |
| 997 | *ptr++ = n >> 20; |
| 998 | *ptr++ = n >> 16; |
| 999 | case 4: /* 4 nibbles == 16 bits. */ |
| 1000 | *ptr++ = n >> 12; |
| 1001 | *ptr++ = n >> 8; |
| 1002 | case 2: |
| 1003 | *ptr++ = n >> 4; |
| 1004 | case 1: |
| 1005 | *ptr++ = n >> 0; |
| 1006 | break; |
| 1007 | } |
| 1008 | return ptr; |
| 1009 | } |
| 1010 | |
| 1011 | /* Now we know what sort of opcodes it is. Let's build the bytes. */ |
| 1012 | |
| 1013 | static void |
| 1014 | build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED) |
| 1015 | { |
| 1016 | char *output_ptr = buffer; |
| 1017 | int c; |
| 1018 | int nibble; |
| 1019 | unsigned int *class_ptr; |
| 1020 | |
| 1021 | frag_wane (frag_now); |
| 1022 | frag_new (0); |
| 1023 | |
| 1024 | if (frag_room () < 8) |
| 1025 | frag_grow (8); /* Make room for maximum instruction size. */ |
| 1026 | |
| 1027 | memset (buffer, 0, sizeof (buffer)); |
| 1028 | class_ptr = this_try->byte_info; |
| 1029 | |
| 1030 | for (nibble = 0; (c = *class_ptr++); nibble++) |
| 1031 | { |
| 1032 | |
| 1033 | switch (c & CLASS_MASK) |
| 1034 | { |
| 1035 | default: |
| 1036 | abort (); |
| 1037 | |
| 1038 | case CLASS_ADDRESS: |
| 1039 | /* Direct address, we don't cope with the SS mode right now. */ |
| 1040 | if (segmented_mode) |
| 1041 | { |
| 1042 | /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */ |
| 1043 | output_ptr = apply_fix (output_ptr, BFD_RELOC_32, da_operand, 8); |
| 1044 | } |
| 1045 | else |
| 1046 | { |
| 1047 | output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4); |
| 1048 | } |
| 1049 | da_operand = 0; |
| 1050 | break; |
| 1051 | case CLASS_DISP8: |
| 1052 | /* pc rel 8 bit */ |
| 1053 | output_ptr = apply_fix (output_ptr, BFD_RELOC_8_PCREL, da_operand, 2); |
| 1054 | da_operand = 0; |
| 1055 | break; |
| 1056 | |
| 1057 | case CLASS_0DISP7: |
| 1058 | /* pc rel 7 bit */ |
| 1059 | *output_ptr = 0; |
| 1060 | output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2); |
| 1061 | da_operand = 0; |
| 1062 | break; |
| 1063 | |
| 1064 | case CLASS_1DISP7: |
| 1065 | /* pc rel 7 bit */ |
| 1066 | *output_ptr = 0x80; |
| 1067 | output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2); |
| 1068 | output_ptr[-2] = 0x8; |
| 1069 | da_operand = 0; |
| 1070 | break; |
| 1071 | |
| 1072 | case CLASS_BIT_1OR2: |
| 1073 | *output_ptr = c & 0xf; |
| 1074 | if (imm_operand) |
| 1075 | { |
| 1076 | if (imm_operand->X_add_number == 2) |
| 1077 | *output_ptr |= 2; |
| 1078 | else if (imm_operand->X_add_number != 1) |
| 1079 | as_bad (_("immediate must be 1 or 2")); |
| 1080 | } |
| 1081 | else |
| 1082 | as_bad (_("immediate 1 or 2 expected")); |
| 1083 | output_ptr++; |
| 1084 | break; |
| 1085 | case CLASS_CC: |
| 1086 | *output_ptr++ = the_cc; |
| 1087 | break; |
| 1088 | case CLASS_0CCC: |
| 1089 | if (the_ctrl < 2 || the_ctrl > 7) |
| 1090 | as_bad (_("invalid control register name")); |
| 1091 | *output_ptr++ = the_ctrl; |
| 1092 | break; |
| 1093 | case CLASS_1CCC: |
| 1094 | if (the_ctrl < 2 || the_ctrl > 7) |
| 1095 | as_bad (_("invalid control register name")); |
| 1096 | *output_ptr++ = the_ctrl | 0x8; |
| 1097 | break; |
| 1098 | case CLASS_00II: |
| 1099 | *output_ptr++ = (~the_interrupt & 0x3); |
| 1100 | break; |
| 1101 | case CLASS_01II: |
| 1102 | *output_ptr++ = (~the_interrupt & 0x3) | 0x4; |
| 1103 | break; |
| 1104 | case CLASS_FLAGS: |
| 1105 | *output_ptr++ = the_flags; |
| 1106 | break; |
| 1107 | case CLASS_IGNORE: |
| 1108 | case CLASS_BIT: |
| 1109 | *output_ptr++ = c & 0xf; |
| 1110 | break; |
| 1111 | case CLASS_REGN0: |
| 1112 | if (reg[c & 0xf] == 0) |
| 1113 | as_bad (_("can't use R0 here")); |
| 1114 | /* Fall through. */ |
| 1115 | case CLASS_REG: |
| 1116 | case CLASS_REG_BYTE: |
| 1117 | case CLASS_REG_WORD: |
| 1118 | case CLASS_REG_LONG: |
| 1119 | case CLASS_REG_QUAD: |
| 1120 | /* Insert bit mattern of right reg. */ |
| 1121 | *output_ptr++ = reg[c & 0xf]; |
| 1122 | break; |
| 1123 | case CLASS_DISP: |
| 1124 | switch (c & ARG_MASK) |
| 1125 | { |
| 1126 | case ARG_DISP12: |
| 1127 | output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_CALLR, da_operand, 4); |
| 1128 | break; |
| 1129 | case ARG_DISP16: |
| 1130 | output_ptr = apply_fix (output_ptr, BFD_RELOC_16_PCREL, da_operand, 4); |
| 1131 | break; |
| 1132 | default: |
| 1133 | output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4); |
| 1134 | } |
| 1135 | da_operand = 0; |
| 1136 | break; |
| 1137 | |
| 1138 | case CLASS_IMM: |
| 1139 | { |
| 1140 | switch (c & ARG_MASK) |
| 1141 | { |
| 1142 | case ARG_NIM4: |
| 1143 | if (imm_operand->X_add_number > 15) |
| 1144 | as_bad (_("immediate value out of range")); |
| 1145 | imm_operand->X_add_number = -imm_operand->X_add_number; |
| 1146 | output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1); |
| 1147 | break; |
| 1148 | /*case ARG_IMMNMINUS1: not used. */ |
| 1149 | case ARG_IMM4M1: |
| 1150 | imm_operand->X_add_number--; |
| 1151 | /* Drop through. */ |
| 1152 | case ARG_IMM4: |
| 1153 | if (imm_operand->X_add_number > 15) |
| 1154 | as_bad (_("immediate value out of range")); |
| 1155 | output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1); |
| 1156 | break; |
| 1157 | case ARG_NIM8: |
| 1158 | imm_operand->X_add_number = -imm_operand->X_add_number; |
| 1159 | /* Drop through. */ |
| 1160 | case ARG_IMM8: |
| 1161 | output_ptr = apply_fix (output_ptr, BFD_RELOC_8, imm_operand, 2); |
| 1162 | break; |
| 1163 | case ARG_IMM16: |
| 1164 | output_ptr = apply_fix (output_ptr, BFD_RELOC_16, imm_operand, 4); |
| 1165 | break; |
| 1166 | case ARG_IMM32: |
| 1167 | output_ptr = apply_fix (output_ptr, BFD_RELOC_32, imm_operand, 8); |
| 1168 | break; |
| 1169 | default: |
| 1170 | abort (); |
| 1171 | } |
| 1172 | } |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | /* Copy from the nibble buffer into the frag. */ |
| 1177 | { |
| 1178 | int length = (output_ptr - buffer) / 2; |
| 1179 | char *src = buffer; |
| 1180 | char *fragp = frag_more (length); |
| 1181 | |
| 1182 | while (src < output_ptr) |
| 1183 | { |
| 1184 | *fragp = (src[0] << 4) | src[1]; |
| 1185 | src += 2; |
| 1186 | fragp++; |
| 1187 | } |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | /* This is the guts of the machine-dependent assembler. STR points to a |
| 1192 | machine dependent instruction. This function is supposed to emit |
| 1193 | the frags/bytes it assembles to. */ |
| 1194 | |
| 1195 | void |
| 1196 | md_assemble (char *str) |
| 1197 | { |
| 1198 | char c; |
| 1199 | char *op_start; |
| 1200 | char *op_end; |
| 1201 | struct z8k_op operand[4]; |
| 1202 | opcode_entry_type *opcode; |
| 1203 | |
| 1204 | /* Drop leading whitespace. */ |
| 1205 | while (*str == ' ') |
| 1206 | str++; |
| 1207 | |
| 1208 | /* Find the op code end. */ |
| 1209 | for (op_start = op_end = str; |
| 1210 | *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end]; |
| 1211 | op_end++) |
| 1212 | ; |
| 1213 | |
| 1214 | if (op_end == op_start) |
| 1215 | { |
| 1216 | as_bad (_("can't find opcode ")); |
| 1217 | } |
| 1218 | c = *op_end; |
| 1219 | |
| 1220 | *op_end = 0; /* Zero-terminate op code string for hash_find() call. */ |
| 1221 | |
| 1222 | opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start); |
| 1223 | |
| 1224 | if (opcode == NULL) |
| 1225 | { |
| 1226 | as_bad (_("unknown opcode")); |
| 1227 | return; |
| 1228 | } |
| 1229 | |
| 1230 | *op_end = c; /* Restore original string. */ |
| 1231 | |
| 1232 | if (opcode->opcode == 250) |
| 1233 | { |
| 1234 | pseudo_typeS *p; |
| 1235 | char oc; |
| 1236 | char *old = input_line_pointer; |
| 1237 | |
| 1238 | /* Was really a pseudo op. */ |
| 1239 | |
| 1240 | input_line_pointer = op_end; |
| 1241 | |
| 1242 | oc = *old; |
| 1243 | *old = '\n'; |
| 1244 | while (*input_line_pointer == ' ') |
| 1245 | input_line_pointer++; |
| 1246 | p = (pseudo_typeS *) (opcode->func); |
| 1247 | |
| 1248 | (p->poc_handler) (p->poc_val); |
| 1249 | input_line_pointer = old; |
| 1250 | *old = oc; |
| 1251 | } |
| 1252 | else |
| 1253 | { |
| 1254 | char *new_input_line_pointer; |
| 1255 | |
| 1256 | new_input_line_pointer = get_operands (opcode, op_end, operand); |
| 1257 | if (new_input_line_pointer) |
| 1258 | { |
| 1259 | input_line_pointer = new_input_line_pointer; |
| 1260 | opcode = get_specific (opcode, operand); |
| 1261 | } |
| 1262 | |
| 1263 | if (new_input_line_pointer == NULL || opcode == NULL) |
| 1264 | { |
| 1265 | /* Couldn't find an opcode which matched the operands. */ |
| 1266 | char *where = frag_more (2); |
| 1267 | |
| 1268 | where[0] = 0x0; |
| 1269 | where[1] = 0x0; |
| 1270 | |
| 1271 | as_bad (_("Can't find opcode to match operands")); |
| 1272 | return; |
| 1273 | } |
| 1274 | |
| 1275 | build_bytes (opcode, operand); |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | /* We have no need to default values of symbols. */ |
| 1280 | |
| 1281 | symbolS * |
| 1282 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
| 1283 | { |
| 1284 | return 0; |
| 1285 | } |
| 1286 | |
| 1287 | /* Various routines to kill one day. */ |
| 1288 | |
| 1289 | char * |
| 1290 | md_atof (int type, char *litP, int *sizeP) |
| 1291 | { |
| 1292 | return ieee_md_atof (type, litP, sizeP, TRUE); |
| 1293 | } |
| 1294 | \f |
| 1295 | const char *md_shortopts = "z:"; |
| 1296 | |
| 1297 | struct option md_longopts[] = |
| 1298 | { |
| 1299 | #define OPTION_RELAX (OPTION_MD_BASE) |
| 1300 | {"linkrelax", no_argument, NULL, OPTION_RELAX}, |
| 1301 | {NULL, no_argument, NULL, 0} |
| 1302 | }; |
| 1303 | |
| 1304 | size_t md_longopts_size = sizeof (md_longopts); |
| 1305 | |
| 1306 | int |
| 1307 | md_parse_option (int c, char *arg) |
| 1308 | { |
| 1309 | switch (c) |
| 1310 | { |
| 1311 | case 'z': |
| 1312 | if (!strcmp (arg, "8001")) |
| 1313 | s_segm (1); |
| 1314 | else if (!strcmp (arg, "8002")) |
| 1315 | s_segm (0); |
| 1316 | else |
| 1317 | { |
| 1318 | as_bad (_("invalid architecture -z%s"), arg); |
| 1319 | return 0; |
| 1320 | } |
| 1321 | z8k_target_from_cmdline = 1; |
| 1322 | break; |
| 1323 | |
| 1324 | case OPTION_RELAX: |
| 1325 | linkrelax = 1; |
| 1326 | break; |
| 1327 | |
| 1328 | default: |
| 1329 | return 0; |
| 1330 | } |
| 1331 | |
| 1332 | return 1; |
| 1333 | } |
| 1334 | |
| 1335 | void |
| 1336 | md_show_usage (FILE *stream) |
| 1337 | { |
| 1338 | fprintf (stream, _("\ |
| 1339 | Z8K options:\n\ |
| 1340 | -z8001 generate segmented code\n\ |
| 1341 | -z8002 generate unsegmented code\n\ |
| 1342 | -linkrelax create linker relaxable code\n")); |
| 1343 | } |
| 1344 | \f |
| 1345 | void |
| 1346 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, |
| 1347 | segT sec ATTRIBUTE_UNUSED, |
| 1348 | fragS *fragP ATTRIBUTE_UNUSED) |
| 1349 | { |
| 1350 | printf (_("call to md_convert_frag\n")); |
| 1351 | abort (); |
| 1352 | } |
| 1353 | |
| 1354 | /* Generate a machine dependent reloc from a fixup. */ |
| 1355 | |
| 1356 | arelent* |
| 1357 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, |
| 1358 | fixS *fixp ATTRIBUTE_UNUSED) |
| 1359 | { |
| 1360 | arelent *reloc; |
| 1361 | |
| 1362 | reloc = xmalloc (sizeof (*reloc)); |
| 1363 | reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *)); |
| 1364 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 1365 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 1366 | reloc->addend = fixp->fx_offset; |
| 1367 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 1368 | |
| 1369 | if (! reloc->howto) |
| 1370 | { |
| 1371 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 1372 | _("Cannot represent %s relocation in object file"), |
| 1373 | bfd_get_reloc_code_name (fixp->fx_r_type)); |
| 1374 | abort (); |
| 1375 | } |
| 1376 | return reloc; |
| 1377 | } |
| 1378 | |
| 1379 | valueT |
| 1380 | md_section_align (segT seg, valueT size) |
| 1381 | { |
| 1382 | int align = bfd_get_section_alignment (stdoutput, seg); |
| 1383 | valueT mask = ((valueT) 1 << align) - 1; |
| 1384 | |
| 1385 | return (size + mask) & ~mask; |
| 1386 | } |
| 1387 | |
| 1388 | /* Attempt to simplify or eliminate a fixup. To indicate that a fixup |
| 1389 | has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL, |
| 1390 | we will have to generate a reloc entry. */ |
| 1391 | void |
| 1392 | md_apply_fix (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED) |
| 1393 | { |
| 1394 | long val = * (long *) valP; |
| 1395 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 1396 | |
| 1397 | switch (fixP->fx_r_type) |
| 1398 | { |
| 1399 | case BFD_RELOC_Z8K_IMM4L: |
| 1400 | if (fixP->fx_addsy) |
| 1401 | { |
| 1402 | fixP->fx_no_overflow = 1; |
| 1403 | fixP->fx_done = 0; |
| 1404 | } |
| 1405 | else |
| 1406 | buf[0] = (buf[0] & 0xf0) | (val & 0xf); |
| 1407 | break; |
| 1408 | |
| 1409 | case BFD_RELOC_8: |
| 1410 | if (fixP->fx_addsy) |
| 1411 | { |
| 1412 | fixP->fx_no_overflow = 1; |
| 1413 | fixP->fx_done = 0; |
| 1414 | } |
| 1415 | else |
| 1416 | *buf++ = val; |
| 1417 | break; |
| 1418 | |
| 1419 | case BFD_RELOC_16: |
| 1420 | if (fixP->fx_addsy) |
| 1421 | { |
| 1422 | fixP->fx_no_overflow = 1; |
| 1423 | fixP->fx_done = 0; |
| 1424 | } |
| 1425 | else |
| 1426 | { |
| 1427 | *buf++ = (val >> 8); |
| 1428 | *buf++ = val; |
| 1429 | } |
| 1430 | break; |
| 1431 | |
| 1432 | case BFD_RELOC_32: |
| 1433 | if (fixP->fx_addsy) |
| 1434 | { |
| 1435 | fixP->fx_no_overflow = 1; |
| 1436 | fixP->fx_done = 0; |
| 1437 | } |
| 1438 | else |
| 1439 | { |
| 1440 | *buf++ = (val >> 24); |
| 1441 | *buf++ = (val >> 16); |
| 1442 | *buf++ = (val >> 8); |
| 1443 | *buf++ = val; |
| 1444 | } |
| 1445 | break; |
| 1446 | |
| 1447 | case BFD_RELOC_8_PCREL: |
| 1448 | if (fixP->fx_addsy) |
| 1449 | { |
| 1450 | fixP->fx_no_overflow = 1; |
| 1451 | fixP->fx_done = 0; |
| 1452 | } |
| 1453 | else |
| 1454 | { |
| 1455 | if (val & 1) |
| 1456 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1457 | _("cannot branch to odd address")); |
| 1458 | val /= 2; |
| 1459 | if (val > 127 || val < -128) |
| 1460 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1461 | _("relative jump out of range")); |
| 1462 | *buf++ = val; |
| 1463 | fixP->fx_no_overflow = 1; |
| 1464 | fixP->fx_done = 1; |
| 1465 | } |
| 1466 | break; |
| 1467 | |
| 1468 | case BFD_RELOC_16_PCREL: |
| 1469 | if (fixP->fx_addsy) |
| 1470 | { |
| 1471 | fixP->fx_no_overflow = 1; |
| 1472 | fixP->fx_done = 0; |
| 1473 | } |
| 1474 | else |
| 1475 | { |
| 1476 | val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size; |
| 1477 | if (val > 32767 || val < -32768) |
| 1478 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1479 | _("relative address out of range")); |
| 1480 | *buf++ = (val >> 8); |
| 1481 | *buf++ = val; |
| 1482 | fixP->fx_no_overflow = 1; |
| 1483 | fixP->fx_done = 1; |
| 1484 | } |
| 1485 | break; |
| 1486 | |
| 1487 | case BFD_RELOC_Z8K_CALLR: |
| 1488 | if (fixP->fx_addsy) |
| 1489 | { |
| 1490 | fixP->fx_no_overflow = 1; |
| 1491 | fixP->fx_done = 0; |
| 1492 | } |
| 1493 | else |
| 1494 | { |
| 1495 | if (val & 1) |
| 1496 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1497 | _("cannot branch to odd address")); |
| 1498 | if (val > 4096 || val < -4095) |
| 1499 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1500 | _("relative call out of range")); |
| 1501 | val = -val / 2; |
| 1502 | *buf = (*buf & 0xf0) | ((val >> 8) & 0xf); |
| 1503 | buf++; |
| 1504 | *buf++ = val & 0xff; |
| 1505 | fixP->fx_no_overflow = 1; |
| 1506 | fixP->fx_done = 1; |
| 1507 | } |
| 1508 | break; |
| 1509 | |
| 1510 | case BFD_RELOC_Z8K_DISP7: |
| 1511 | if (fixP->fx_addsy) |
| 1512 | { |
| 1513 | fixP->fx_no_overflow = 1; |
| 1514 | fixP->fx_done = 0; |
| 1515 | } |
| 1516 | else |
| 1517 | { |
| 1518 | if (val & 1) |
| 1519 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1520 | _("cannot branch to odd address")); |
| 1521 | val /= 2; |
| 1522 | if (val > 0 || val < -127) |
| 1523 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1524 | _("relative jump out of range")); |
| 1525 | *buf = (*buf & 0x80) | (-val & 0x7f); |
| 1526 | fixP->fx_no_overflow = 1; |
| 1527 | fixP->fx_done = 1; |
| 1528 | } |
| 1529 | break; |
| 1530 | |
| 1531 | default: |
| 1532 | printf(_("md_apply_fix: unknown r_type 0x%x\n"), fixP->fx_r_type); |
| 1533 | abort (); |
| 1534 | } |
| 1535 | |
| 1536 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) |
| 1537 | fixP->fx_done = 1; |
| 1538 | } |
| 1539 | |
| 1540 | int |
| 1541 | md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED, |
| 1542 | segT segment_type ATTRIBUTE_UNUSED) |
| 1543 | { |
| 1544 | printf (_("call to md_estimate_size_before_relax\n")); |
| 1545 | abort (); |
| 1546 | } |
| 1547 | |
| 1548 | /* Put number into target byte order. */ |
| 1549 | |
| 1550 | void |
| 1551 | md_number_to_chars (char *ptr, valueT use, int nbytes) |
| 1552 | { |
| 1553 | number_to_chars_bigendian (ptr, use, nbytes); |
| 1554 | } |
| 1555 | |
| 1556 | /* On the Z8000, a PC-relative offset is relative to the address of the |
| 1557 | instruction plus its size. */ |
| 1558 | long |
| 1559 | md_pcrel_from (fixS *fixP) |
| 1560 | { |
| 1561 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; |
| 1562 | } |
| 1563 | |
| 1564 | void |
| 1565 | tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED) |
| 1566 | { |
| 1567 | } |