| 1 | /* tc-mn10300.c -- Assembler code for the Matsushita 10300 |
| 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
| 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 |
| 19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include "as.h" |
| 24 | #include "safe-ctype.h" |
| 25 | #include "subsegs.h" |
| 26 | #include "opcode/mn10300.h" |
| 27 | #include "dwarf2dbg.h" |
| 28 | \f |
| 29 | /* Structure to hold information about predefined registers. */ |
| 30 | struct reg_name |
| 31 | { |
| 32 | const char *name; |
| 33 | int value; |
| 34 | }; |
| 35 | |
| 36 | /* Generic assembler global variables which must be defined by all |
| 37 | targets. */ |
| 38 | |
| 39 | /* Characters which always start a comment. */ |
| 40 | const char comment_chars[] = "#"; |
| 41 | |
| 42 | /* Characters which start a comment at the beginning of a line. */ |
| 43 | const char line_comment_chars[] = ";#"; |
| 44 | |
| 45 | /* Characters which may be used to separate multiple commands on a |
| 46 | single line. */ |
| 47 | const char line_separator_chars[] = ";"; |
| 48 | |
| 49 | /* Characters which are used to indicate an exponent in a floating |
| 50 | point number. */ |
| 51 | const char EXP_CHARS[] = "eE"; |
| 52 | |
| 53 | /* Characters which mean that a number is a floating point constant, |
| 54 | as in 0d1.0. */ |
| 55 | const char FLT_CHARS[] = "dD"; |
| 56 | \f |
| 57 | const relax_typeS md_relax_table[] = { |
| 58 | /* bCC relaxing */ |
| 59 | {0x7f, -0x80, 2, 1}, |
| 60 | {0x7fff, -0x8000, 5, 2}, |
| 61 | {0x7fffffff, -0x80000000, 7, 0}, |
| 62 | |
| 63 | /* bCC relaxing (uncommon cases) */ |
| 64 | {0x7f, -0x80, 3, 4}, |
| 65 | {0x7fff, -0x8000, 6, 5}, |
| 66 | {0x7fffffff, -0x80000000, 8, 0}, |
| 67 | |
| 68 | /* call relaxing */ |
| 69 | {0x7fff, -0x8000, 5, 7}, |
| 70 | {0x7fffffff, -0x80000000, 7, 0}, |
| 71 | |
| 72 | /* calls relaxing */ |
| 73 | {0x7fff, -0x8000, 4, 9}, |
| 74 | {0x7fffffff, -0x80000000, 6, 0}, |
| 75 | |
| 76 | /* jmp relaxing */ |
| 77 | {0x7f, -0x80, 2, 11}, |
| 78 | {0x7fff, -0x8000, 3, 12}, |
| 79 | {0x7fffffff, -0x80000000, 5, 0}, |
| 80 | |
| 81 | }; |
| 82 | |
| 83 | /* Local functions. */ |
| 84 | static void mn10300_insert_operand PARAMS ((unsigned long *, unsigned long *, |
| 85 | const struct mn10300_operand *, |
| 86 | offsetT, char *, unsigned, |
| 87 | unsigned)); |
| 88 | static unsigned long check_operand PARAMS ((unsigned long, |
| 89 | const struct mn10300_operand *, |
| 90 | offsetT)); |
| 91 | static int reg_name_search PARAMS ((const struct reg_name *, int, const char *)); |
| 92 | static bfd_boolean data_register_name PARAMS ((expressionS *expressionP)); |
| 93 | static bfd_boolean address_register_name PARAMS ((expressionS *expressionP)); |
| 94 | static bfd_boolean other_register_name PARAMS ((expressionS *expressionP)); |
| 95 | static bfd_boolean r_register_name PARAMS ((expressionS *expressionP)); |
| 96 | static bfd_boolean xr_register_name PARAMS ((expressionS *expressionP)); |
| 97 | static void set_arch_mach PARAMS ((int)); |
| 98 | |
| 99 | /* Set linkrelax here to avoid fixups in most sections. */ |
| 100 | int linkrelax = 1; |
| 101 | |
| 102 | static int current_machine; |
| 103 | |
| 104 | /* Fixups. */ |
| 105 | #define MAX_INSN_FIXUPS (5) |
| 106 | struct mn10300_fixup |
| 107 | { |
| 108 | expressionS exp; |
| 109 | int opindex; |
| 110 | bfd_reloc_code_real_type reloc; |
| 111 | }; |
| 112 | struct mn10300_fixup fixups[MAX_INSN_FIXUPS]; |
| 113 | static int fc; |
| 114 | |
| 115 | /* We must store the value of each register operand so that we can |
| 116 | verify that certain registers do not match. */ |
| 117 | int mn10300_reg_operands[MN10300_MAX_OPERANDS]; |
| 118 | \f |
| 119 | const char *md_shortopts = ""; |
| 120 | struct option md_longopts[] = { |
| 121 | {NULL, no_argument, NULL, 0} |
| 122 | }; |
| 123 | size_t md_longopts_size = sizeof (md_longopts); |
| 124 | |
| 125 | /* The target specific pseudo-ops which we support. */ |
| 126 | const pseudo_typeS md_pseudo_table[] = |
| 127 | { |
| 128 | { "file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0 }, |
| 129 | { "loc", dwarf2_directive_loc, 0 }, |
| 130 | { "am30", set_arch_mach, AM30 }, |
| 131 | { "am33", set_arch_mach, AM33 }, |
| 132 | { "mn10300", set_arch_mach, MN103 }, |
| 133 | {NULL, 0, 0} |
| 134 | }; |
| 135 | |
| 136 | #define HAVE_AM33 (current_machine == AM33) |
| 137 | #define HAVE_AM30 (current_machine == AM30) |
| 138 | |
| 139 | /* Opcode hash table. */ |
| 140 | static struct hash_control *mn10300_hash; |
| 141 | |
| 142 | /* This table is sorted. Suitable for searching by a binary search. */ |
| 143 | static const struct reg_name data_registers[] = |
| 144 | { |
| 145 | { "d0", 0 }, |
| 146 | { "d1", 1 }, |
| 147 | { "d2", 2 }, |
| 148 | { "d3", 3 }, |
| 149 | }; |
| 150 | #define DATA_REG_NAME_CNT \ |
| 151 | (sizeof (data_registers) / sizeof (struct reg_name)) |
| 152 | |
| 153 | static const struct reg_name address_registers[] = |
| 154 | { |
| 155 | { "a0", 0 }, |
| 156 | { "a1", 1 }, |
| 157 | { "a2", 2 }, |
| 158 | { "a3", 3 }, |
| 159 | }; |
| 160 | |
| 161 | #define ADDRESS_REG_NAME_CNT \ |
| 162 | (sizeof (address_registers) / sizeof (struct reg_name)) |
| 163 | |
| 164 | static const struct reg_name r_registers[] = |
| 165 | { |
| 166 | { "a0", 8 }, |
| 167 | { "a1", 9 }, |
| 168 | { "a2", 10 }, |
| 169 | { "a3", 11 }, |
| 170 | { "d0", 12 }, |
| 171 | { "d1", 13 }, |
| 172 | { "d2", 14 }, |
| 173 | { "d3", 15 }, |
| 174 | { "e0", 0 }, |
| 175 | { "e1", 1 }, |
| 176 | { "e10", 10 }, |
| 177 | { "e11", 11 }, |
| 178 | { "e12", 12 }, |
| 179 | { "e13", 13 }, |
| 180 | { "e14", 14 }, |
| 181 | { "e15", 15 }, |
| 182 | { "e2", 2 }, |
| 183 | { "e3", 3 }, |
| 184 | { "e4", 4 }, |
| 185 | { "e5", 5 }, |
| 186 | { "e6", 6 }, |
| 187 | { "e7", 7 }, |
| 188 | { "e8", 8 }, |
| 189 | { "e9", 9 }, |
| 190 | { "r0", 0 }, |
| 191 | { "r1", 1 }, |
| 192 | { "r10", 10 }, |
| 193 | { "r11", 11 }, |
| 194 | { "r12", 12 }, |
| 195 | { "r13", 13 }, |
| 196 | { "r14", 14 }, |
| 197 | { "r15", 15 }, |
| 198 | { "r2", 2 }, |
| 199 | { "r3", 3 }, |
| 200 | { "r4", 4 }, |
| 201 | { "r5", 5 }, |
| 202 | { "r6", 6 }, |
| 203 | { "r7", 7 }, |
| 204 | { "r8", 8 }, |
| 205 | { "r9", 9 }, |
| 206 | }; |
| 207 | |
| 208 | #define R_REG_NAME_CNT \ |
| 209 | (sizeof (r_registers) / sizeof (struct reg_name)) |
| 210 | |
| 211 | static const struct reg_name xr_registers[] = |
| 212 | { |
| 213 | { "mcrh", 2 }, |
| 214 | { "mcrl", 3 }, |
| 215 | { "mcvf", 4 }, |
| 216 | { "mdrq", 1 }, |
| 217 | { "sp", 0 }, |
| 218 | { "xr0", 0 }, |
| 219 | { "xr1", 1 }, |
| 220 | { "xr10", 10 }, |
| 221 | { "xr11", 11 }, |
| 222 | { "xr12", 12 }, |
| 223 | { "xr13", 13 }, |
| 224 | { "xr14", 14 }, |
| 225 | { "xr15", 15 }, |
| 226 | { "xr2", 2 }, |
| 227 | { "xr3", 3 }, |
| 228 | { "xr4", 4 }, |
| 229 | { "xr5", 5 }, |
| 230 | { "xr6", 6 }, |
| 231 | { "xr7", 7 }, |
| 232 | { "xr8", 8 }, |
| 233 | { "xr9", 9 }, |
| 234 | }; |
| 235 | |
| 236 | #define XR_REG_NAME_CNT \ |
| 237 | (sizeof (xr_registers) / sizeof (struct reg_name)) |
| 238 | |
| 239 | /* We abuse the `value' field, that would be otherwise unused, to |
| 240 | encode the architecture on which (access to) the register was |
| 241 | introduced. FIXME: we should probably warn when we encounter a |
| 242 | register name when assembling for an architecture that doesn't |
| 243 | support it, before parsing it as a symbol name. */ |
| 244 | static const struct reg_name other_registers[] = |
| 245 | { |
| 246 | { "epsw", AM33 }, |
| 247 | { "mdr", 0 }, |
| 248 | { "pc", AM33 }, |
| 249 | { "psw", 0 }, |
| 250 | { "sp", 0 }, |
| 251 | }; |
| 252 | |
| 253 | #define OTHER_REG_NAME_CNT \ |
| 254 | (sizeof (other_registers) / sizeof (struct reg_name)) |
| 255 | |
| 256 | /* reg_name_search does a binary search of the given register table |
| 257 | to see if "name" is a valid regiter name. Returns the register |
| 258 | number from the array on success, or -1 on failure. */ |
| 259 | |
| 260 | static int |
| 261 | reg_name_search (regs, regcount, name) |
| 262 | const struct reg_name *regs; |
| 263 | int regcount; |
| 264 | const char *name; |
| 265 | { |
| 266 | int middle, low, high; |
| 267 | int cmp; |
| 268 | |
| 269 | low = 0; |
| 270 | high = regcount - 1; |
| 271 | |
| 272 | do |
| 273 | { |
| 274 | middle = (low + high) / 2; |
| 275 | cmp = strcasecmp (name, regs[middle].name); |
| 276 | if (cmp < 0) |
| 277 | high = middle - 1; |
| 278 | else if (cmp > 0) |
| 279 | low = middle + 1; |
| 280 | else |
| 281 | return regs[middle].value; |
| 282 | } |
| 283 | while (low <= high); |
| 284 | return -1; |
| 285 | } |
| 286 | |
| 287 | /* Summary of register_name(). |
| 288 | * |
| 289 | * in: Input_line_pointer points to 1st char of operand. |
| 290 | * |
| 291 | * out: An expressionS. |
| 292 | * The operand may have been a register: in this case, X_op == O_register, |
| 293 | * X_add_number is set to the register number, and truth is returned. |
| 294 | * Input_line_pointer->(next non-blank) char after operand, or is in |
| 295 | * its original state. |
| 296 | */ |
| 297 | |
| 298 | static bfd_boolean |
| 299 | r_register_name (expressionP) |
| 300 | expressionS *expressionP; |
| 301 | { |
| 302 | int reg_number; |
| 303 | char *name; |
| 304 | char *start; |
| 305 | char c; |
| 306 | |
| 307 | /* Find the spelling of the operand. */ |
| 308 | start = name = input_line_pointer; |
| 309 | |
| 310 | c = get_symbol_end (); |
| 311 | reg_number = reg_name_search (r_registers, R_REG_NAME_CNT, name); |
| 312 | |
| 313 | /* Put back the delimiting char. */ |
| 314 | *input_line_pointer = c; |
| 315 | |
| 316 | /* Look to see if it's in the register table. */ |
| 317 | if (reg_number >= 0) |
| 318 | { |
| 319 | expressionP->X_op = O_register; |
| 320 | expressionP->X_add_number = reg_number; |
| 321 | |
| 322 | /* Make the rest nice. */ |
| 323 | expressionP->X_add_symbol = NULL; |
| 324 | expressionP->X_op_symbol = NULL; |
| 325 | |
| 326 | return TRUE; |
| 327 | } |
| 328 | |
| 329 | /* Reset the line as if we had not done anything. */ |
| 330 | input_line_pointer = start; |
| 331 | return FALSE; |
| 332 | } |
| 333 | |
| 334 | /* Summary of register_name(). |
| 335 | * |
| 336 | * in: Input_line_pointer points to 1st char of operand. |
| 337 | * |
| 338 | * out: An expressionS. |
| 339 | * The operand may have been a register: in this case, X_op == O_register, |
| 340 | * X_add_number is set to the register number, and truth is returned. |
| 341 | * Input_line_pointer->(next non-blank) char after operand, or is in |
| 342 | * its original state. |
| 343 | */ |
| 344 | |
| 345 | static bfd_boolean |
| 346 | xr_register_name (expressionP) |
| 347 | expressionS *expressionP; |
| 348 | { |
| 349 | int reg_number; |
| 350 | char *name; |
| 351 | char *start; |
| 352 | char c; |
| 353 | |
| 354 | /* Find the spelling of the operand. */ |
| 355 | start = name = input_line_pointer; |
| 356 | |
| 357 | c = get_symbol_end (); |
| 358 | reg_number = reg_name_search (xr_registers, XR_REG_NAME_CNT, name); |
| 359 | |
| 360 | /* Put back the delimiting char. */ |
| 361 | *input_line_pointer = c; |
| 362 | |
| 363 | /* Look to see if it's in the register table. */ |
| 364 | if (reg_number >= 0) |
| 365 | { |
| 366 | expressionP->X_op = O_register; |
| 367 | expressionP->X_add_number = reg_number; |
| 368 | |
| 369 | /* Make the rest nice. */ |
| 370 | expressionP->X_add_symbol = NULL; |
| 371 | expressionP->X_op_symbol = NULL; |
| 372 | |
| 373 | return TRUE; |
| 374 | } |
| 375 | |
| 376 | /* Reset the line as if we had not done anything. */ |
| 377 | input_line_pointer = start; |
| 378 | return FALSE; |
| 379 | } |
| 380 | |
| 381 | /* Summary of register_name(). |
| 382 | * |
| 383 | * in: Input_line_pointer points to 1st char of operand. |
| 384 | * |
| 385 | * out: An expressionS. |
| 386 | * The operand may have been a register: in this case, X_op == O_register, |
| 387 | * X_add_number is set to the register number, and truth is returned. |
| 388 | * Input_line_pointer->(next non-blank) char after operand, or is in |
| 389 | * its original state. |
| 390 | */ |
| 391 | |
| 392 | static bfd_boolean |
| 393 | data_register_name (expressionP) |
| 394 | expressionS *expressionP; |
| 395 | { |
| 396 | int reg_number; |
| 397 | char *name; |
| 398 | char *start; |
| 399 | char c; |
| 400 | |
| 401 | /* Find the spelling of the operand. */ |
| 402 | start = name = input_line_pointer; |
| 403 | |
| 404 | c = get_symbol_end (); |
| 405 | reg_number = reg_name_search (data_registers, DATA_REG_NAME_CNT, name); |
| 406 | |
| 407 | /* Put back the delimiting char. */ |
| 408 | *input_line_pointer = c; |
| 409 | |
| 410 | /* Look to see if it's in the register table. */ |
| 411 | if (reg_number >= 0) |
| 412 | { |
| 413 | expressionP->X_op = O_register; |
| 414 | expressionP->X_add_number = reg_number; |
| 415 | |
| 416 | /* Make the rest nice. */ |
| 417 | expressionP->X_add_symbol = NULL; |
| 418 | expressionP->X_op_symbol = NULL; |
| 419 | |
| 420 | return TRUE; |
| 421 | } |
| 422 | |
| 423 | /* Reset the line as if we had not done anything. */ |
| 424 | input_line_pointer = start; |
| 425 | return FALSE; |
| 426 | } |
| 427 | |
| 428 | /* Summary of register_name(). |
| 429 | * |
| 430 | * in: Input_line_pointer points to 1st char of operand. |
| 431 | * |
| 432 | * out: An expressionS. |
| 433 | * The operand may have been a register: in this case, X_op == O_register, |
| 434 | * X_add_number is set to the register number, and truth is returned. |
| 435 | * Input_line_pointer->(next non-blank) char after operand, or is in |
| 436 | * its original state. |
| 437 | */ |
| 438 | |
| 439 | static bfd_boolean |
| 440 | address_register_name (expressionP) |
| 441 | expressionS *expressionP; |
| 442 | { |
| 443 | int reg_number; |
| 444 | char *name; |
| 445 | char *start; |
| 446 | char c; |
| 447 | |
| 448 | /* Find the spelling of the operand. */ |
| 449 | start = name = input_line_pointer; |
| 450 | |
| 451 | c = get_symbol_end (); |
| 452 | reg_number = reg_name_search (address_registers, ADDRESS_REG_NAME_CNT, name); |
| 453 | |
| 454 | /* Put back the delimiting char. */ |
| 455 | *input_line_pointer = c; |
| 456 | |
| 457 | /* Look to see if it's in the register table. */ |
| 458 | if (reg_number >= 0) |
| 459 | { |
| 460 | expressionP->X_op = O_register; |
| 461 | expressionP->X_add_number = reg_number; |
| 462 | |
| 463 | /* Make the rest nice. */ |
| 464 | expressionP->X_add_symbol = NULL; |
| 465 | expressionP->X_op_symbol = NULL; |
| 466 | |
| 467 | return TRUE; |
| 468 | } |
| 469 | |
| 470 | /* Reset the line as if we had not done anything. */ |
| 471 | input_line_pointer = start; |
| 472 | return FALSE; |
| 473 | } |
| 474 | |
| 475 | /* Summary of register_name(). |
| 476 | * |
| 477 | * in: Input_line_pointer points to 1st char of operand. |
| 478 | * |
| 479 | * out: An expressionS. |
| 480 | * The operand may have been a register: in this case, X_op == O_register, |
| 481 | * X_add_number is set to the register number, and truth is returned. |
| 482 | * Input_line_pointer->(next non-blank) char after operand, or is in |
| 483 | * its original state. |
| 484 | */ |
| 485 | |
| 486 | static bfd_boolean |
| 487 | other_register_name (expressionP) |
| 488 | expressionS *expressionP; |
| 489 | { |
| 490 | int reg_number; |
| 491 | char *name; |
| 492 | char *start; |
| 493 | char c; |
| 494 | |
| 495 | /* Find the spelling of the operand. */ |
| 496 | start = name = input_line_pointer; |
| 497 | |
| 498 | c = get_symbol_end (); |
| 499 | reg_number = reg_name_search (other_registers, OTHER_REG_NAME_CNT, name); |
| 500 | |
| 501 | /* Put back the delimiting char. */ |
| 502 | *input_line_pointer = c; |
| 503 | |
| 504 | /* Look to see if it's in the register table. */ |
| 505 | if (reg_number == 0 |
| 506 | || (reg_number == AM33 && HAVE_AM33)) |
| 507 | { |
| 508 | expressionP->X_op = O_register; |
| 509 | expressionP->X_add_number = 0; |
| 510 | |
| 511 | /* Make the rest nice. */ |
| 512 | expressionP->X_add_symbol = NULL; |
| 513 | expressionP->X_op_symbol = NULL; |
| 514 | |
| 515 | return TRUE; |
| 516 | } |
| 517 | |
| 518 | /* Reset the line as if we had not done anything. */ |
| 519 | input_line_pointer = start; |
| 520 | return FALSE; |
| 521 | } |
| 522 | |
| 523 | void |
| 524 | md_show_usage (stream) |
| 525 | FILE *stream; |
| 526 | { |
| 527 | fprintf (stream, _("MN10300 options:\n\ |
| 528 | none yet\n")); |
| 529 | } |
| 530 | |
| 531 | int |
| 532 | md_parse_option (c, arg) |
| 533 | int c ATTRIBUTE_UNUSED; |
| 534 | char *arg ATTRIBUTE_UNUSED; |
| 535 | { |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | symbolS * |
| 540 | md_undefined_symbol (name) |
| 541 | char *name ATTRIBUTE_UNUSED; |
| 542 | { |
| 543 | return 0; |
| 544 | } |
| 545 | |
| 546 | char * |
| 547 | md_atof (type, litp, sizep) |
| 548 | int type; |
| 549 | char *litp; |
| 550 | int *sizep; |
| 551 | { |
| 552 | int prec; |
| 553 | LITTLENUM_TYPE words[4]; |
| 554 | char *t; |
| 555 | int i; |
| 556 | |
| 557 | switch (type) |
| 558 | { |
| 559 | case 'f': |
| 560 | prec = 2; |
| 561 | break; |
| 562 | |
| 563 | case 'd': |
| 564 | prec = 4; |
| 565 | break; |
| 566 | |
| 567 | default: |
| 568 | *sizep = 0; |
| 569 | return "bad call to md_atof"; |
| 570 | } |
| 571 | |
| 572 | t = atof_ieee (input_line_pointer, type, words); |
| 573 | if (t) |
| 574 | input_line_pointer = t; |
| 575 | |
| 576 | *sizep = prec * 2; |
| 577 | |
| 578 | for (i = prec - 1; i >= 0; i--) |
| 579 | { |
| 580 | md_number_to_chars (litp, (valueT) words[i], 2); |
| 581 | litp += 2; |
| 582 | } |
| 583 | |
| 584 | return NULL; |
| 585 | } |
| 586 | |
| 587 | void |
| 588 | md_convert_frag (abfd, sec, fragP) |
| 589 | bfd *abfd ATTRIBUTE_UNUSED; |
| 590 | asection *sec; |
| 591 | fragS *fragP; |
| 592 | { |
| 593 | static unsigned long label_count = 0; |
| 594 | char buf[40]; |
| 595 | |
| 596 | subseg_change (sec, 0); |
| 597 | if (fragP->fr_subtype == 0) |
| 598 | { |
| 599 | fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol, |
| 600 | fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); |
| 601 | fragP->fr_var = 0; |
| 602 | fragP->fr_fix += 2; |
| 603 | } |
| 604 | else if (fragP->fr_subtype == 1) |
| 605 | { |
| 606 | /* Reverse the condition of the first branch. */ |
| 607 | int offset = fragP->fr_fix; |
| 608 | int opcode = fragP->fr_literal[offset] & 0xff; |
| 609 | |
| 610 | switch (opcode) |
| 611 | { |
| 612 | case 0xc8: |
| 613 | opcode = 0xc9; |
| 614 | break; |
| 615 | case 0xc9: |
| 616 | opcode = 0xc8; |
| 617 | break; |
| 618 | case 0xc0: |
| 619 | opcode = 0xc2; |
| 620 | break; |
| 621 | case 0xc2: |
| 622 | opcode = 0xc0; |
| 623 | break; |
| 624 | case 0xc3: |
| 625 | opcode = 0xc1; |
| 626 | break; |
| 627 | case 0xc1: |
| 628 | opcode = 0xc3; |
| 629 | break; |
| 630 | case 0xc4: |
| 631 | opcode = 0xc6; |
| 632 | break; |
| 633 | case 0xc6: |
| 634 | opcode = 0xc4; |
| 635 | break; |
| 636 | case 0xc7: |
| 637 | opcode = 0xc5; |
| 638 | break; |
| 639 | case 0xc5: |
| 640 | opcode = 0xc7; |
| 641 | break; |
| 642 | default: |
| 643 | abort (); |
| 644 | } |
| 645 | fragP->fr_literal[offset] = opcode; |
| 646 | |
| 647 | /* Create a fixup for the reversed conditional branch. */ |
| 648 | sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++); |
| 649 | fix_new (fragP, fragP->fr_fix + 1, 1, |
| 650 | symbol_new (buf, sec, 0, fragP->fr_next), |
| 651 | fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); |
| 652 | |
| 653 | /* Now create the unconditional branch + fixup to the |
| 654 | final target. */ |
| 655 | fragP->fr_literal[offset + 2] = 0xcc; |
| 656 | fix_new (fragP, fragP->fr_fix + 3, 2, fragP->fr_symbol, |
| 657 | fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); |
| 658 | fragP->fr_var = 0; |
| 659 | fragP->fr_fix += 5; |
| 660 | } |
| 661 | else if (fragP->fr_subtype == 2) |
| 662 | { |
| 663 | /* Reverse the condition of the first branch. */ |
| 664 | int offset = fragP->fr_fix; |
| 665 | int opcode = fragP->fr_literal[offset] & 0xff; |
| 666 | |
| 667 | switch (opcode) |
| 668 | { |
| 669 | case 0xc8: |
| 670 | opcode = 0xc9; |
| 671 | break; |
| 672 | case 0xc9: |
| 673 | opcode = 0xc8; |
| 674 | break; |
| 675 | case 0xc0: |
| 676 | opcode = 0xc2; |
| 677 | break; |
| 678 | case 0xc2: |
| 679 | opcode = 0xc0; |
| 680 | break; |
| 681 | case 0xc3: |
| 682 | opcode = 0xc1; |
| 683 | break; |
| 684 | case 0xc1: |
| 685 | opcode = 0xc3; |
| 686 | break; |
| 687 | case 0xc4: |
| 688 | opcode = 0xc6; |
| 689 | break; |
| 690 | case 0xc6: |
| 691 | opcode = 0xc4; |
| 692 | break; |
| 693 | case 0xc7: |
| 694 | opcode = 0xc5; |
| 695 | break; |
| 696 | case 0xc5: |
| 697 | opcode = 0xc7; |
| 698 | break; |
| 699 | default: |
| 700 | abort (); |
| 701 | } |
| 702 | fragP->fr_literal[offset] = opcode; |
| 703 | |
| 704 | /* Create a fixup for the reversed conditional branch. */ |
| 705 | sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++); |
| 706 | fix_new (fragP, fragP->fr_fix + 1, 1, |
| 707 | symbol_new (buf, sec, 0, fragP->fr_next), |
| 708 | fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); |
| 709 | |
| 710 | /* Now create the unconditional branch + fixup to the |
| 711 | final target. */ |
| 712 | fragP->fr_literal[offset + 2] = 0xdc; |
| 713 | fix_new (fragP, fragP->fr_fix + 3, 4, fragP->fr_symbol, |
| 714 | fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); |
| 715 | fragP->fr_var = 0; |
| 716 | fragP->fr_fix += 7; |
| 717 | } |
| 718 | else if (fragP->fr_subtype == 3) |
| 719 | { |
| 720 | fix_new (fragP, fragP->fr_fix + 2, 1, fragP->fr_symbol, |
| 721 | fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL); |
| 722 | fragP->fr_var = 0; |
| 723 | fragP->fr_fix += 3; |
| 724 | } |
| 725 | else if (fragP->fr_subtype == 4) |
| 726 | { |
| 727 | /* Reverse the condition of the first branch. */ |
| 728 | int offset = fragP->fr_fix; |
| 729 | int opcode = fragP->fr_literal[offset + 1] & 0xff; |
| 730 | |
| 731 | switch (opcode) |
| 732 | { |
| 733 | case 0xe8: |
| 734 | opcode = 0xe9; |
| 735 | break; |
| 736 | case 0xe9: |
| 737 | opcode = 0xe8; |
| 738 | break; |
| 739 | case 0xea: |
| 740 | opcode = 0xeb; |
| 741 | break; |
| 742 | case 0xeb: |
| 743 | opcode = 0xea; |
| 744 | break; |
| 745 | default: |
| 746 | abort (); |
| 747 | } |
| 748 | fragP->fr_literal[offset + 1] = opcode; |
| 749 | |
| 750 | /* Create a fixup for the reversed conditional branch. */ |
| 751 | sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++); |
| 752 | fix_new (fragP, fragP->fr_fix + 2, 1, |
| 753 | symbol_new (buf, sec, 0, fragP->fr_next), |
| 754 | fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL); |
| 755 | |
| 756 | /* Now create the unconditional branch + fixup to the |
| 757 | final target. */ |
| 758 | fragP->fr_literal[offset + 3] = 0xcc; |
| 759 | fix_new (fragP, fragP->fr_fix + 4, 2, fragP->fr_symbol, |
| 760 | fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); |
| 761 | fragP->fr_var = 0; |
| 762 | fragP->fr_fix += 6; |
| 763 | } |
| 764 | else if (fragP->fr_subtype == 5) |
| 765 | { |
| 766 | /* Reverse the condition of the first branch. */ |
| 767 | int offset = fragP->fr_fix; |
| 768 | int opcode = fragP->fr_literal[offset + 1] & 0xff; |
| 769 | |
| 770 | switch (opcode) |
| 771 | { |
| 772 | case 0xe8: |
| 773 | opcode = 0xe9; |
| 774 | break; |
| 775 | case 0xea: |
| 776 | opcode = 0xeb; |
| 777 | break; |
| 778 | case 0xeb: |
| 779 | opcode = 0xea; |
| 780 | break; |
| 781 | default: |
| 782 | abort (); |
| 783 | } |
| 784 | fragP->fr_literal[offset + 1] = opcode; |
| 785 | |
| 786 | /* Create a fixup for the reversed conditional branch. */ |
| 787 | sprintf (buf, ".%s_%ld", FAKE_LABEL_NAME, label_count++); |
| 788 | fix_new (fragP, fragP->fr_fix + 2, 1, |
| 789 | symbol_new (buf, sec, 0, fragP->fr_next), |
| 790 | fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL); |
| 791 | |
| 792 | /* Now create the unconditional branch + fixup to the |
| 793 | final target. */ |
| 794 | fragP->fr_literal[offset + 3] = 0xdc; |
| 795 | fix_new (fragP, fragP->fr_fix + 4, 4, fragP->fr_symbol, |
| 796 | fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); |
| 797 | fragP->fr_var = 0; |
| 798 | fragP->fr_fix += 8; |
| 799 | } |
| 800 | else if (fragP->fr_subtype == 6) |
| 801 | { |
| 802 | int offset = fragP->fr_fix; |
| 803 | fragP->fr_literal[offset] = 0xcd; |
| 804 | fix_new (fragP, fragP->fr_fix + 1, 2, fragP->fr_symbol, |
| 805 | fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); |
| 806 | fragP->fr_var = 0; |
| 807 | fragP->fr_fix += 5; |
| 808 | } |
| 809 | else if (fragP->fr_subtype == 7) |
| 810 | { |
| 811 | int offset = fragP->fr_fix; |
| 812 | fragP->fr_literal[offset] = 0xdd; |
| 813 | fragP->fr_literal[offset + 5] = fragP->fr_literal[offset + 3]; |
| 814 | fragP->fr_literal[offset + 6] = fragP->fr_literal[offset + 4]; |
| 815 | |
| 816 | fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol, |
| 817 | fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); |
| 818 | fragP->fr_var = 0; |
| 819 | fragP->fr_fix += 7; |
| 820 | } |
| 821 | else if (fragP->fr_subtype == 8) |
| 822 | { |
| 823 | int offset = fragP->fr_fix; |
| 824 | fragP->fr_literal[offset] = 0xfa; |
| 825 | fragP->fr_literal[offset + 1] = 0xff; |
| 826 | fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol, |
| 827 | fragP->fr_offset + 2, 1, BFD_RELOC_16_PCREL); |
| 828 | fragP->fr_var = 0; |
| 829 | fragP->fr_fix += 4; |
| 830 | } |
| 831 | else if (fragP->fr_subtype == 9) |
| 832 | { |
| 833 | int offset = fragP->fr_fix; |
| 834 | fragP->fr_literal[offset] = 0xfc; |
| 835 | fragP->fr_literal[offset + 1] = 0xff; |
| 836 | |
| 837 | fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, |
| 838 | fragP->fr_offset + 2, 1, BFD_RELOC_32_PCREL); |
| 839 | fragP->fr_var = 0; |
| 840 | fragP->fr_fix += 6; |
| 841 | } |
| 842 | else if (fragP->fr_subtype == 10) |
| 843 | { |
| 844 | fragP->fr_literal[fragP->fr_fix] = 0xca; |
| 845 | fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol, |
| 846 | fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); |
| 847 | fragP->fr_var = 0; |
| 848 | fragP->fr_fix += 2; |
| 849 | } |
| 850 | else if (fragP->fr_subtype == 11) |
| 851 | { |
| 852 | int offset = fragP->fr_fix; |
| 853 | fragP->fr_literal[offset] = 0xcc; |
| 854 | |
| 855 | fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol, |
| 856 | fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); |
| 857 | fragP->fr_var = 0; |
| 858 | fragP->fr_fix += 3; |
| 859 | } |
| 860 | else if (fragP->fr_subtype == 12) |
| 861 | { |
| 862 | int offset = fragP->fr_fix; |
| 863 | fragP->fr_literal[offset] = 0xdc; |
| 864 | |
| 865 | fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol, |
| 866 | fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); |
| 867 | fragP->fr_var = 0; |
| 868 | fragP->fr_fix += 5; |
| 869 | } |
| 870 | else |
| 871 | abort (); |
| 872 | } |
| 873 | |
| 874 | valueT |
| 875 | md_section_align (seg, addr) |
| 876 | asection *seg; |
| 877 | valueT addr; |
| 878 | { |
| 879 | int align = bfd_get_section_alignment (stdoutput, seg); |
| 880 | return ((addr + (1 << align) - 1) & (-1 << align)); |
| 881 | } |
| 882 | |
| 883 | void |
| 884 | md_begin () |
| 885 | { |
| 886 | char *prev_name = ""; |
| 887 | register const struct mn10300_opcode *op; |
| 888 | |
| 889 | mn10300_hash = hash_new (); |
| 890 | |
| 891 | /* Insert unique names into hash table. The MN10300 instruction set |
| 892 | has many identical opcode names that have different opcodes based |
| 893 | on the operands. This hash table then provides a quick index to |
| 894 | the first opcode with a particular name in the opcode table. */ |
| 895 | |
| 896 | op = mn10300_opcodes; |
| 897 | while (op->name) |
| 898 | { |
| 899 | if (strcmp (prev_name, op->name)) |
| 900 | { |
| 901 | prev_name = (char *) op->name; |
| 902 | hash_insert (mn10300_hash, op->name, (char *) op); |
| 903 | } |
| 904 | op++; |
| 905 | } |
| 906 | |
| 907 | /* Set the default machine type. */ |
| 908 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, MN103)) |
| 909 | as_warn (_("could not set architecture and machine")); |
| 910 | |
| 911 | current_machine = MN103; |
| 912 | } |
| 913 | |
| 914 | void |
| 915 | md_assemble (str) |
| 916 | char *str; |
| 917 | { |
| 918 | char *s; |
| 919 | struct mn10300_opcode *opcode; |
| 920 | struct mn10300_opcode *next_opcode; |
| 921 | const unsigned char *opindex_ptr; |
| 922 | int next_opindex, relaxable; |
| 923 | unsigned long insn, extension, size = 0; |
| 924 | char *f; |
| 925 | int i; |
| 926 | int match; |
| 927 | |
| 928 | /* Get the opcode. */ |
| 929 | for (s = str; *s != '\0' && !ISSPACE (*s); s++) |
| 930 | ; |
| 931 | if (*s != '\0') |
| 932 | *s++ = '\0'; |
| 933 | |
| 934 | /* Find the first opcode with the proper name. */ |
| 935 | opcode = (struct mn10300_opcode *) hash_find (mn10300_hash, str); |
| 936 | if (opcode == NULL) |
| 937 | { |
| 938 | as_bad (_("Unrecognized opcode: `%s'"), str); |
| 939 | return; |
| 940 | } |
| 941 | |
| 942 | str = s; |
| 943 | while (ISSPACE (*str)) |
| 944 | ++str; |
| 945 | |
| 946 | input_line_pointer = str; |
| 947 | |
| 948 | for (;;) |
| 949 | { |
| 950 | const char *errmsg; |
| 951 | int op_idx; |
| 952 | char *hold; |
| 953 | int extra_shift = 0; |
| 954 | |
| 955 | errmsg = _("Invalid opcode/operands"); |
| 956 | |
| 957 | /* Reset the array of register operands. */ |
| 958 | memset (mn10300_reg_operands, -1, sizeof (mn10300_reg_operands)); |
| 959 | |
| 960 | relaxable = 0; |
| 961 | fc = 0; |
| 962 | match = 0; |
| 963 | next_opindex = 0; |
| 964 | insn = opcode->opcode; |
| 965 | extension = 0; |
| 966 | |
| 967 | /* If the instruction is not available on the current machine |
| 968 | then it can not possibly match. */ |
| 969 | if (opcode->machine |
| 970 | && !(opcode->machine == AM33 && HAVE_AM33) |
| 971 | && !(opcode->machine == AM30 && HAVE_AM30)) |
| 972 | goto error; |
| 973 | |
| 974 | for (op_idx = 1, opindex_ptr = opcode->operands; |
| 975 | *opindex_ptr != 0; |
| 976 | opindex_ptr++, op_idx++) |
| 977 | { |
| 978 | const struct mn10300_operand *operand; |
| 979 | expressionS ex; |
| 980 | |
| 981 | if (next_opindex == 0) |
| 982 | { |
| 983 | operand = &mn10300_operands[*opindex_ptr]; |
| 984 | } |
| 985 | else |
| 986 | { |
| 987 | operand = &mn10300_operands[next_opindex]; |
| 988 | next_opindex = 0; |
| 989 | } |
| 990 | |
| 991 | while (*str == ' ' || *str == ',') |
| 992 | ++str; |
| 993 | |
| 994 | if (operand->flags & MN10300_OPERAND_RELAX) |
| 995 | relaxable = 1; |
| 996 | |
| 997 | /* Gather the operand. */ |
| 998 | hold = input_line_pointer; |
| 999 | input_line_pointer = str; |
| 1000 | |
| 1001 | if (operand->flags & MN10300_OPERAND_PAREN) |
| 1002 | { |
| 1003 | if (*input_line_pointer != ')' && *input_line_pointer != '(') |
| 1004 | { |
| 1005 | input_line_pointer = hold; |
| 1006 | str = hold; |
| 1007 | goto error; |
| 1008 | } |
| 1009 | input_line_pointer++; |
| 1010 | goto keep_going; |
| 1011 | } |
| 1012 | /* See if we can match the operands. */ |
| 1013 | else if (operand->flags & MN10300_OPERAND_DREG) |
| 1014 | { |
| 1015 | if (!data_register_name (&ex)) |
| 1016 | { |
| 1017 | input_line_pointer = hold; |
| 1018 | str = hold; |
| 1019 | goto error; |
| 1020 | } |
| 1021 | } |
| 1022 | else if (operand->flags & MN10300_OPERAND_AREG) |
| 1023 | { |
| 1024 | if (!address_register_name (&ex)) |
| 1025 | { |
| 1026 | input_line_pointer = hold; |
| 1027 | str = hold; |
| 1028 | goto error; |
| 1029 | } |
| 1030 | } |
| 1031 | else if (operand->flags & MN10300_OPERAND_SP) |
| 1032 | { |
| 1033 | char *start = input_line_pointer; |
| 1034 | char c = get_symbol_end (); |
| 1035 | |
| 1036 | if (strcasecmp (start, "sp") != 0) |
| 1037 | { |
| 1038 | *input_line_pointer = c; |
| 1039 | input_line_pointer = hold; |
| 1040 | str = hold; |
| 1041 | goto error; |
| 1042 | } |
| 1043 | *input_line_pointer = c; |
| 1044 | goto keep_going; |
| 1045 | } |
| 1046 | else if (operand->flags & MN10300_OPERAND_RREG) |
| 1047 | { |
| 1048 | if (!r_register_name (&ex)) |
| 1049 | { |
| 1050 | input_line_pointer = hold; |
| 1051 | str = hold; |
| 1052 | goto error; |
| 1053 | } |
| 1054 | } |
| 1055 | else if (operand->flags & MN10300_OPERAND_XRREG) |
| 1056 | { |
| 1057 | if (!xr_register_name (&ex)) |
| 1058 | { |
| 1059 | input_line_pointer = hold; |
| 1060 | str = hold; |
| 1061 | goto error; |
| 1062 | } |
| 1063 | } |
| 1064 | else if (operand->flags & MN10300_OPERAND_USP) |
| 1065 | { |
| 1066 | char *start = input_line_pointer; |
| 1067 | char c = get_symbol_end (); |
| 1068 | |
| 1069 | if (strcasecmp (start, "usp") != 0) |
| 1070 | { |
| 1071 | *input_line_pointer = c; |
| 1072 | input_line_pointer = hold; |
| 1073 | str = hold; |
| 1074 | goto error; |
| 1075 | } |
| 1076 | *input_line_pointer = c; |
| 1077 | goto keep_going; |
| 1078 | } |
| 1079 | else if (operand->flags & MN10300_OPERAND_SSP) |
| 1080 | { |
| 1081 | char *start = input_line_pointer; |
| 1082 | char c = get_symbol_end (); |
| 1083 | |
| 1084 | if (strcasecmp (start, "ssp") != 0) |
| 1085 | { |
| 1086 | *input_line_pointer = c; |
| 1087 | input_line_pointer = hold; |
| 1088 | str = hold; |
| 1089 | goto error; |
| 1090 | } |
| 1091 | *input_line_pointer = c; |
| 1092 | goto keep_going; |
| 1093 | } |
| 1094 | else if (operand->flags & MN10300_OPERAND_MSP) |
| 1095 | { |
| 1096 | char *start = input_line_pointer; |
| 1097 | char c = get_symbol_end (); |
| 1098 | |
| 1099 | if (strcasecmp (start, "msp") != 0) |
| 1100 | { |
| 1101 | *input_line_pointer = c; |
| 1102 | input_line_pointer = hold; |
| 1103 | str = hold; |
| 1104 | goto error; |
| 1105 | } |
| 1106 | *input_line_pointer = c; |
| 1107 | goto keep_going; |
| 1108 | } |
| 1109 | else if (operand->flags & MN10300_OPERAND_PC) |
| 1110 | { |
| 1111 | char *start = input_line_pointer; |
| 1112 | char c = get_symbol_end (); |
| 1113 | |
| 1114 | if (strcasecmp (start, "pc") != 0) |
| 1115 | { |
| 1116 | *input_line_pointer = c; |
| 1117 | input_line_pointer = hold; |
| 1118 | str = hold; |
| 1119 | goto error; |
| 1120 | } |
| 1121 | *input_line_pointer = c; |
| 1122 | goto keep_going; |
| 1123 | } |
| 1124 | else if (operand->flags & MN10300_OPERAND_EPSW) |
| 1125 | { |
| 1126 | char *start = input_line_pointer; |
| 1127 | char c = get_symbol_end (); |
| 1128 | |
| 1129 | if (strcasecmp (start, "epsw") != 0) |
| 1130 | { |
| 1131 | *input_line_pointer = c; |
| 1132 | input_line_pointer = hold; |
| 1133 | str = hold; |
| 1134 | goto error; |
| 1135 | } |
| 1136 | *input_line_pointer = c; |
| 1137 | goto keep_going; |
| 1138 | } |
| 1139 | else if (operand->flags & MN10300_OPERAND_PLUS) |
| 1140 | { |
| 1141 | if (*input_line_pointer != '+') |
| 1142 | { |
| 1143 | input_line_pointer = hold; |
| 1144 | str = hold; |
| 1145 | goto error; |
| 1146 | } |
| 1147 | input_line_pointer++; |
| 1148 | goto keep_going; |
| 1149 | } |
| 1150 | else if (operand->flags & MN10300_OPERAND_PSW) |
| 1151 | { |
| 1152 | char *start = input_line_pointer; |
| 1153 | char c = get_symbol_end (); |
| 1154 | |
| 1155 | if (strcasecmp (start, "psw") != 0) |
| 1156 | { |
| 1157 | *input_line_pointer = c; |
| 1158 | input_line_pointer = hold; |
| 1159 | str = hold; |
| 1160 | goto error; |
| 1161 | } |
| 1162 | *input_line_pointer = c; |
| 1163 | goto keep_going; |
| 1164 | } |
| 1165 | else if (operand->flags & MN10300_OPERAND_MDR) |
| 1166 | { |
| 1167 | char *start = input_line_pointer; |
| 1168 | char c = get_symbol_end (); |
| 1169 | |
| 1170 | if (strcasecmp (start, "mdr") != 0) |
| 1171 | { |
| 1172 | *input_line_pointer = c; |
| 1173 | input_line_pointer = hold; |
| 1174 | str = hold; |
| 1175 | goto error; |
| 1176 | } |
| 1177 | *input_line_pointer = c; |
| 1178 | goto keep_going; |
| 1179 | } |
| 1180 | else if (operand->flags & MN10300_OPERAND_REG_LIST) |
| 1181 | { |
| 1182 | unsigned int value = 0; |
| 1183 | if (*input_line_pointer != '[') |
| 1184 | { |
| 1185 | input_line_pointer = hold; |
| 1186 | str = hold; |
| 1187 | goto error; |
| 1188 | } |
| 1189 | |
| 1190 | /* Eat the '['. */ |
| 1191 | input_line_pointer++; |
| 1192 | |
| 1193 | /* We used to reject a null register list here; however, |
| 1194 | we accept it now so the compiler can emit "call" |
| 1195 | instructions for all calls to named functions. |
| 1196 | |
| 1197 | The linker can then fill in the appropriate bits for the |
| 1198 | register list and stack size or change the instruction |
| 1199 | into a "calls" if using "call" is not profitable. */ |
| 1200 | while (*input_line_pointer != ']') |
| 1201 | { |
| 1202 | char *start; |
| 1203 | char c; |
| 1204 | |
| 1205 | if (*input_line_pointer == ',') |
| 1206 | input_line_pointer++; |
| 1207 | |
| 1208 | start = input_line_pointer; |
| 1209 | c = get_symbol_end (); |
| 1210 | |
| 1211 | if (strcasecmp (start, "d2") == 0) |
| 1212 | { |
| 1213 | value |= 0x80; |
| 1214 | *input_line_pointer = c; |
| 1215 | } |
| 1216 | else if (strcasecmp (start, "d3") == 0) |
| 1217 | { |
| 1218 | value |= 0x40; |
| 1219 | *input_line_pointer = c; |
| 1220 | } |
| 1221 | else if (strcasecmp (start, "a2") == 0) |
| 1222 | { |
| 1223 | value |= 0x20; |
| 1224 | *input_line_pointer = c; |
| 1225 | } |
| 1226 | else if (strcasecmp (start, "a3") == 0) |
| 1227 | { |
| 1228 | value |= 0x10; |
| 1229 | *input_line_pointer = c; |
| 1230 | } |
| 1231 | else if (strcasecmp (start, "other") == 0) |
| 1232 | { |
| 1233 | value |= 0x08; |
| 1234 | *input_line_pointer = c; |
| 1235 | } |
| 1236 | else if (HAVE_AM33 |
| 1237 | && strcasecmp (start, "exreg0") == 0) |
| 1238 | { |
| 1239 | value |= 0x04; |
| 1240 | *input_line_pointer = c; |
| 1241 | } |
| 1242 | else if (HAVE_AM33 |
| 1243 | && strcasecmp (start, "exreg1") == 0) |
| 1244 | { |
| 1245 | value |= 0x02; |
| 1246 | *input_line_pointer = c; |
| 1247 | } |
| 1248 | else if (HAVE_AM33 |
| 1249 | && strcasecmp (start, "exother") == 0) |
| 1250 | { |
| 1251 | value |= 0x01; |
| 1252 | *input_line_pointer = c; |
| 1253 | } |
| 1254 | else if (HAVE_AM33 |
| 1255 | && strcasecmp (start, "all") == 0) |
| 1256 | { |
| 1257 | value |= 0xff; |
| 1258 | *input_line_pointer = c; |
| 1259 | } |
| 1260 | else |
| 1261 | { |
| 1262 | input_line_pointer = hold; |
| 1263 | str = hold; |
| 1264 | goto error; |
| 1265 | } |
| 1266 | } |
| 1267 | input_line_pointer++; |
| 1268 | mn10300_insert_operand (&insn, &extension, operand, |
| 1269 | value, (char *) NULL, 0, 0); |
| 1270 | goto keep_going; |
| 1271 | |
| 1272 | } |
| 1273 | else if (data_register_name (&ex)) |
| 1274 | { |
| 1275 | input_line_pointer = hold; |
| 1276 | str = hold; |
| 1277 | goto error; |
| 1278 | } |
| 1279 | else if (address_register_name (&ex)) |
| 1280 | { |
| 1281 | input_line_pointer = hold; |
| 1282 | str = hold; |
| 1283 | goto error; |
| 1284 | } |
| 1285 | else if (other_register_name (&ex)) |
| 1286 | { |
| 1287 | input_line_pointer = hold; |
| 1288 | str = hold; |
| 1289 | goto error; |
| 1290 | } |
| 1291 | else if (HAVE_AM33 && r_register_name (&ex)) |
| 1292 | { |
| 1293 | input_line_pointer = hold; |
| 1294 | str = hold; |
| 1295 | goto error; |
| 1296 | } |
| 1297 | else if (HAVE_AM33 && xr_register_name (&ex)) |
| 1298 | { |
| 1299 | input_line_pointer = hold; |
| 1300 | str = hold; |
| 1301 | goto error; |
| 1302 | } |
| 1303 | else if (*str == ')' || *str == '(') |
| 1304 | { |
| 1305 | input_line_pointer = hold; |
| 1306 | str = hold; |
| 1307 | goto error; |
| 1308 | } |
| 1309 | else |
| 1310 | { |
| 1311 | expression (&ex); |
| 1312 | } |
| 1313 | |
| 1314 | switch (ex.X_op) |
| 1315 | { |
| 1316 | case O_illegal: |
| 1317 | errmsg = _("illegal operand"); |
| 1318 | goto error; |
| 1319 | case O_absent: |
| 1320 | errmsg = _("missing operand"); |
| 1321 | goto error; |
| 1322 | case O_register: |
| 1323 | { |
| 1324 | int mask; |
| 1325 | |
| 1326 | mask = MN10300_OPERAND_DREG | MN10300_OPERAND_AREG; |
| 1327 | if (HAVE_AM33) |
| 1328 | mask |= MN10300_OPERAND_RREG | MN10300_OPERAND_XRREG; |
| 1329 | if ((operand->flags & mask) == 0) |
| 1330 | { |
| 1331 | input_line_pointer = hold; |
| 1332 | str = hold; |
| 1333 | goto error; |
| 1334 | } |
| 1335 | |
| 1336 | if (opcode->format == FMT_D1 || opcode->format == FMT_S1) |
| 1337 | extra_shift = 8; |
| 1338 | else if (opcode->format == FMT_D2 |
| 1339 | || opcode->format == FMT_D4 |
| 1340 | || opcode->format == FMT_S2 |
| 1341 | || opcode->format == FMT_S4 |
| 1342 | || opcode->format == FMT_S6 |
| 1343 | || opcode->format == FMT_D5) |
| 1344 | extra_shift = 16; |
| 1345 | else if (opcode->format == FMT_D7) |
| 1346 | extra_shift = 8; |
| 1347 | else if (opcode->format == FMT_D8 || opcode->format == FMT_D9) |
| 1348 | extra_shift = 8; |
| 1349 | else |
| 1350 | extra_shift = 0; |
| 1351 | |
| 1352 | mn10300_insert_operand (&insn, &extension, operand, |
| 1353 | ex.X_add_number, (char *) NULL, |
| 1354 | 0, extra_shift); |
| 1355 | |
| 1356 | /* And note the register number in the register array. */ |
| 1357 | mn10300_reg_operands[op_idx - 1] = ex.X_add_number; |
| 1358 | break; |
| 1359 | } |
| 1360 | |
| 1361 | case O_constant: |
| 1362 | /* If this operand can be promoted, and it doesn't |
| 1363 | fit into the allocated bitfield for this insn, |
| 1364 | then promote it (ie this opcode does not match). */ |
| 1365 | if (operand->flags |
| 1366 | & (MN10300_OPERAND_PROMOTE | MN10300_OPERAND_RELAX) |
| 1367 | && !check_operand (insn, operand, ex.X_add_number)) |
| 1368 | { |
| 1369 | input_line_pointer = hold; |
| 1370 | str = hold; |
| 1371 | goto error; |
| 1372 | } |
| 1373 | |
| 1374 | mn10300_insert_operand (&insn, &extension, operand, |
| 1375 | ex.X_add_number, (char *) NULL, |
| 1376 | 0, 0); |
| 1377 | break; |
| 1378 | |
| 1379 | default: |
| 1380 | /* If this operand can be promoted, then this opcode didn't |
| 1381 | match since we can't know if it needed promotion! */ |
| 1382 | if (operand->flags & MN10300_OPERAND_PROMOTE) |
| 1383 | { |
| 1384 | input_line_pointer = hold; |
| 1385 | str = hold; |
| 1386 | goto error; |
| 1387 | } |
| 1388 | |
| 1389 | /* We need to generate a fixup for this expression. */ |
| 1390 | if (fc >= MAX_INSN_FIXUPS) |
| 1391 | as_fatal (_("too many fixups")); |
| 1392 | fixups[fc].exp = ex; |
| 1393 | fixups[fc].opindex = *opindex_ptr; |
| 1394 | fixups[fc].reloc = BFD_RELOC_UNUSED; |
| 1395 | ++fc; |
| 1396 | break; |
| 1397 | } |
| 1398 | |
| 1399 | keep_going: |
| 1400 | str = input_line_pointer; |
| 1401 | input_line_pointer = hold; |
| 1402 | |
| 1403 | while (*str == ' ' || *str == ',') |
| 1404 | ++str; |
| 1405 | |
| 1406 | } |
| 1407 | |
| 1408 | /* Make sure we used all the operands! */ |
| 1409 | if (*str != ',') |
| 1410 | match = 1; |
| 1411 | |
| 1412 | /* If this instruction has registers that must not match, verify |
| 1413 | that they do indeed not match. */ |
| 1414 | if (opcode->no_match_operands) |
| 1415 | { |
| 1416 | int i; |
| 1417 | |
| 1418 | /* Look at each operand to see if it's marked. */ |
| 1419 | for (i = 0; i < MN10300_MAX_OPERANDS; i++) |
| 1420 | { |
| 1421 | if ((1 << i) & opcode->no_match_operands) |
| 1422 | { |
| 1423 | int j; |
| 1424 | |
| 1425 | /* operand I is marked. Check that it does not match any |
| 1426 | operands > I which are marked. */ |
| 1427 | for (j = i + 1; j < MN10300_MAX_OPERANDS; j++) |
| 1428 | { |
| 1429 | if (((1 << j) & opcode->no_match_operands) |
| 1430 | && mn10300_reg_operands[i] == mn10300_reg_operands[j]) |
| 1431 | { |
| 1432 | errmsg = _("Invalid register specification."); |
| 1433 | match = 0; |
| 1434 | goto error; |
| 1435 | } |
| 1436 | } |
| 1437 | } |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | error: |
| 1442 | if (match == 0) |
| 1443 | { |
| 1444 | next_opcode = opcode + 1; |
| 1445 | if (!strcmp (next_opcode->name, opcode->name)) |
| 1446 | { |
| 1447 | opcode = next_opcode; |
| 1448 | continue; |
| 1449 | } |
| 1450 | |
| 1451 | as_bad ("%s", errmsg); |
| 1452 | return; |
| 1453 | } |
| 1454 | break; |
| 1455 | } |
| 1456 | |
| 1457 | while (ISSPACE (*str)) |
| 1458 | ++str; |
| 1459 | |
| 1460 | if (*str != '\0') |
| 1461 | as_bad (_("junk at end of line: `%s'"), str); |
| 1462 | |
| 1463 | input_line_pointer = str; |
| 1464 | |
| 1465 | /* Determine the size of the instruction. */ |
| 1466 | if (opcode->format == FMT_S0) |
| 1467 | size = 1; |
| 1468 | |
| 1469 | if (opcode->format == FMT_S1 || opcode->format == FMT_D0) |
| 1470 | size = 2; |
| 1471 | |
| 1472 | if (opcode->format == FMT_S2 || opcode->format == FMT_D1) |
| 1473 | size = 3; |
| 1474 | |
| 1475 | if (opcode->format == FMT_D6) |
| 1476 | size = 3; |
| 1477 | |
| 1478 | if (opcode->format == FMT_D7 || opcode->format == FMT_D10) |
| 1479 | size = 4; |
| 1480 | |
| 1481 | if (opcode->format == FMT_D8) |
| 1482 | size = 6; |
| 1483 | |
| 1484 | if (opcode->format == FMT_D9) |
| 1485 | size = 7; |
| 1486 | |
| 1487 | if (opcode->format == FMT_S4) |
| 1488 | size = 5; |
| 1489 | |
| 1490 | if (opcode->format == FMT_S6 || opcode->format == FMT_D5) |
| 1491 | size = 7; |
| 1492 | |
| 1493 | if (opcode->format == FMT_D2) |
| 1494 | size = 4; |
| 1495 | |
| 1496 | if (opcode->format == FMT_D4) |
| 1497 | size = 6; |
| 1498 | |
| 1499 | if (relaxable && fc > 0) |
| 1500 | { |
| 1501 | int type; |
| 1502 | |
| 1503 | /* We want to anchor the line info to the previous frag (if |
| 1504 | there isn't one, create it), so that, when the insn is |
| 1505 | resized, we still get the right address for the beginning of |
| 1506 | the region. */ |
| 1507 | f = frag_more (0); |
| 1508 | dwarf2_emit_insn (0); |
| 1509 | |
| 1510 | /* bCC */ |
| 1511 | if (size == 2) |
| 1512 | { |
| 1513 | /* Handle bra specially. Basically treat it like jmp so |
| 1514 | that we automatically handle 8, 16 and 32 bit offsets |
| 1515 | correctly as well as jumps to an undefined address. |
| 1516 | |
| 1517 | It is also important to not treat it like other bCC |
| 1518 | instructions since the long forms of bra is different |
| 1519 | from other bCC instructions. */ |
| 1520 | if (opcode->opcode == 0xca00) |
| 1521 | type = 10; |
| 1522 | else |
| 1523 | type = 0; |
| 1524 | } |
| 1525 | /* call */ |
| 1526 | else if (size == 5) |
| 1527 | type = 6; |
| 1528 | /* calls */ |
| 1529 | else if (size == 4) |
| 1530 | type = 8; |
| 1531 | /* jmp */ |
| 1532 | else if (size == 3 && opcode->opcode == 0xcc0000) |
| 1533 | type = 10; |
| 1534 | /* bCC (uncommon cases) */ |
| 1535 | else |
| 1536 | type = 3; |
| 1537 | |
| 1538 | f = frag_var (rs_machine_dependent, 8, 8 - size, type, |
| 1539 | fixups[0].exp.X_add_symbol, |
| 1540 | fixups[0].exp.X_add_number, |
| 1541 | (char *)fixups[0].opindex); |
| 1542 | |
| 1543 | /* This is pretty hokey. We basically just care about the |
| 1544 | opcode, so we have to write out the first word big endian. |
| 1545 | |
| 1546 | The exception is "call", which has two operands that we |
| 1547 | care about. |
| 1548 | |
| 1549 | The first operand (the register list) happens to be in the |
| 1550 | first instruction word, and will be in the right place if |
| 1551 | we output the first word in big endian mode. |
| 1552 | |
| 1553 | The second operand (stack size) is in the extension word, |
| 1554 | and we want it to appear as the first character in the extension |
| 1555 | word (as it appears in memory). Luckily, writing the extension |
| 1556 | word in big endian format will do what we want. */ |
| 1557 | number_to_chars_bigendian (f, insn, size > 4 ? 4 : size); |
| 1558 | if (size > 8) |
| 1559 | { |
| 1560 | number_to_chars_bigendian (f + 4, extension, 4); |
| 1561 | number_to_chars_bigendian (f + 8, 0, size - 8); |
| 1562 | } |
| 1563 | else if (size > 4) |
| 1564 | number_to_chars_bigendian (f + 4, extension, size - 4); |
| 1565 | } |
| 1566 | else |
| 1567 | { |
| 1568 | /* Allocate space for the instruction. */ |
| 1569 | f = frag_more (size); |
| 1570 | |
| 1571 | /* Fill in bytes for the instruction. Note that opcode fields |
| 1572 | are written big-endian, 16 & 32bit immediates are written |
| 1573 | little endian. Egad. */ |
| 1574 | if (opcode->format == FMT_S0 |
| 1575 | || opcode->format == FMT_S1 |
| 1576 | || opcode->format == FMT_D0 |
| 1577 | || opcode->format == FMT_D6 |
| 1578 | || opcode->format == FMT_D7 |
| 1579 | || opcode->format == FMT_D10 |
| 1580 | || opcode->format == FMT_D1) |
| 1581 | { |
| 1582 | number_to_chars_bigendian (f, insn, size); |
| 1583 | } |
| 1584 | else if (opcode->format == FMT_S2 |
| 1585 | && opcode->opcode != 0xdf0000 |
| 1586 | && opcode->opcode != 0xde0000) |
| 1587 | { |
| 1588 | /* A format S2 instruction that is _not_ "ret" and "retf". */ |
| 1589 | number_to_chars_bigendian (f, (insn >> 16) & 0xff, 1); |
| 1590 | number_to_chars_littleendian (f + 1, insn & 0xffff, 2); |
| 1591 | } |
| 1592 | else if (opcode->format == FMT_S2) |
| 1593 | { |
| 1594 | /* This must be a ret or retf, which is written entirely in |
| 1595 | big-endian format. */ |
| 1596 | number_to_chars_bigendian (f, insn, 3); |
| 1597 | } |
| 1598 | else if (opcode->format == FMT_S4 |
| 1599 | && opcode->opcode != 0xdc000000) |
| 1600 | { |
| 1601 | /* This must be a format S4 "call" instruction. What a pain. */ |
| 1602 | unsigned long temp = (insn >> 8) & 0xffff; |
| 1603 | number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1); |
| 1604 | number_to_chars_littleendian (f + 1, temp, 2); |
| 1605 | number_to_chars_bigendian (f + 3, insn & 0xff, 1); |
| 1606 | number_to_chars_bigendian (f + 4, extension & 0xff, 1); |
| 1607 | } |
| 1608 | else if (opcode->format == FMT_S4) |
| 1609 | { |
| 1610 | /* This must be a format S4 "jmp" instruction. */ |
| 1611 | unsigned long temp = ((insn & 0xffffff) << 8) | (extension & 0xff); |
| 1612 | number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1); |
| 1613 | number_to_chars_littleendian (f + 1, temp, 4); |
| 1614 | } |
| 1615 | else if (opcode->format == FMT_S6) |
| 1616 | { |
| 1617 | unsigned long temp = ((insn & 0xffffff) << 8) |
| 1618 | | ((extension >> 16) & 0xff); |
| 1619 | number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1); |
| 1620 | number_to_chars_littleendian (f + 1, temp, 4); |
| 1621 | number_to_chars_bigendian (f + 5, (extension >> 8) & 0xff, 1); |
| 1622 | number_to_chars_bigendian (f + 6, extension & 0xff, 1); |
| 1623 | } |
| 1624 | else if (opcode->format == FMT_D2 |
| 1625 | && opcode->opcode != 0xfaf80000 |
| 1626 | && opcode->opcode != 0xfaf00000 |
| 1627 | && opcode->opcode != 0xfaf40000) |
| 1628 | { |
| 1629 | /* A format D2 instruction where the 16bit immediate is |
| 1630 | really a single 16bit value, not two 8bit values. */ |
| 1631 | number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); |
| 1632 | number_to_chars_littleendian (f + 2, insn & 0xffff, 2); |
| 1633 | } |
| 1634 | else if (opcode->format == FMT_D2) |
| 1635 | { |
| 1636 | /* A format D2 instruction where the 16bit immediate |
| 1637 | is really two 8bit immediates. */ |
| 1638 | number_to_chars_bigendian (f, insn, 4); |
| 1639 | } |
| 1640 | else if (opcode->format == FMT_D4) |
| 1641 | { |
| 1642 | unsigned long temp = ((insn & 0xffff) << 16) | (extension & 0xffff); |
| 1643 | |
| 1644 | number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); |
| 1645 | number_to_chars_littleendian (f + 2, temp, 4); |
| 1646 | } |
| 1647 | else if (opcode->format == FMT_D5) |
| 1648 | { |
| 1649 | unsigned long temp = (((insn & 0xffff) << 16) |
| 1650 | | ((extension >> 8) & 0xffff)); |
| 1651 | |
| 1652 | number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); |
| 1653 | number_to_chars_littleendian (f + 2, temp, 4); |
| 1654 | number_to_chars_bigendian (f + 6, extension & 0xff, 1); |
| 1655 | } |
| 1656 | else if (opcode->format == FMT_D8) |
| 1657 | { |
| 1658 | unsigned long temp = ((insn & 0xff) << 16) | (extension & 0xffff); |
| 1659 | |
| 1660 | number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3); |
| 1661 | number_to_chars_bigendian (f + 3, (temp & 0xff), 1); |
| 1662 | number_to_chars_littleendian (f + 4, temp >> 8, 2); |
| 1663 | } |
| 1664 | else if (opcode->format == FMT_D9) |
| 1665 | { |
| 1666 | unsigned long temp = ((insn & 0xff) << 24) | (extension & 0xffffff); |
| 1667 | |
| 1668 | number_to_chars_bigendian (f, (insn >> 8) & 0xffffff, 3); |
| 1669 | number_to_chars_littleendian (f + 3, temp, 4); |
| 1670 | } |
| 1671 | |
| 1672 | /* Create any fixups. */ |
| 1673 | for (i = 0; i < fc; i++) |
| 1674 | { |
| 1675 | const struct mn10300_operand *operand; |
| 1676 | |
| 1677 | operand = &mn10300_operands[fixups[i].opindex]; |
| 1678 | if (fixups[i].reloc != BFD_RELOC_UNUSED) |
| 1679 | { |
| 1680 | reloc_howto_type *reloc_howto; |
| 1681 | int size; |
| 1682 | int offset; |
| 1683 | fixS *fixP; |
| 1684 | |
| 1685 | reloc_howto = bfd_reloc_type_lookup (stdoutput, |
| 1686 | fixups[i].reloc); |
| 1687 | |
| 1688 | if (!reloc_howto) |
| 1689 | abort (); |
| 1690 | |
| 1691 | size = bfd_get_reloc_size (reloc_howto); |
| 1692 | |
| 1693 | if (size < 1 || size > 4) |
| 1694 | abort (); |
| 1695 | |
| 1696 | offset = 4 - size; |
| 1697 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, |
| 1698 | size, &fixups[i].exp, |
| 1699 | reloc_howto->pc_relative, |
| 1700 | fixups[i].reloc); |
| 1701 | } |
| 1702 | else |
| 1703 | { |
| 1704 | int reloc, pcrel, reloc_size, offset; |
| 1705 | fixS *fixP; |
| 1706 | |
| 1707 | reloc = BFD_RELOC_NONE; |
| 1708 | /* How big is the reloc? Remember SPLIT relocs are |
| 1709 | implicitly 32bits. */ |
| 1710 | if ((operand->flags & MN10300_OPERAND_SPLIT) != 0) |
| 1711 | reloc_size = 32; |
| 1712 | else if ((operand->flags & MN10300_OPERAND_24BIT) != 0) |
| 1713 | reloc_size = 24; |
| 1714 | else |
| 1715 | reloc_size = operand->bits; |
| 1716 | |
| 1717 | /* Is the reloc pc-relative? */ |
| 1718 | pcrel = (operand->flags & MN10300_OPERAND_PCREL) != 0; |
| 1719 | |
| 1720 | offset = size - (reloc_size + operand->shift) / 8; |
| 1721 | |
| 1722 | /* Choose a proper BFD relocation type. */ |
| 1723 | if (pcrel) |
| 1724 | { |
| 1725 | if (reloc_size == 32) |
| 1726 | reloc = BFD_RELOC_32_PCREL; |
| 1727 | else if (reloc_size == 16) |
| 1728 | reloc = BFD_RELOC_16_PCREL; |
| 1729 | else if (reloc_size == 8) |
| 1730 | reloc = BFD_RELOC_8_PCREL; |
| 1731 | else |
| 1732 | abort (); |
| 1733 | } |
| 1734 | else |
| 1735 | { |
| 1736 | if (reloc_size == 32) |
| 1737 | reloc = BFD_RELOC_32; |
| 1738 | else if (reloc_size == 16) |
| 1739 | reloc = BFD_RELOC_16; |
| 1740 | else if (reloc_size == 8) |
| 1741 | reloc = BFD_RELOC_8; |
| 1742 | else |
| 1743 | abort (); |
| 1744 | } |
| 1745 | |
| 1746 | /* Convert the size of the reloc into what fix_new_exp wants. */ |
| 1747 | reloc_size = reloc_size / 8; |
| 1748 | if (reloc_size == 8) |
| 1749 | reloc_size = 0; |
| 1750 | else if (reloc_size == 16) |
| 1751 | reloc_size = 1; |
| 1752 | else if (reloc_size == 32) |
| 1753 | reloc_size = 2; |
| 1754 | |
| 1755 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, |
| 1756 | reloc_size, &fixups[i].exp, pcrel, |
| 1757 | ((bfd_reloc_code_real_type) reloc)); |
| 1758 | |
| 1759 | if (pcrel) |
| 1760 | fixP->fx_offset += offset; |
| 1761 | } |
| 1762 | } |
| 1763 | |
| 1764 | dwarf2_emit_insn (size); |
| 1765 | } |
| 1766 | } |
| 1767 | |
| 1768 | /* If while processing a fixup, a reloc really needs to be created |
| 1769 | then it is done here. */ |
| 1770 | |
| 1771 | arelent * |
| 1772 | tc_gen_reloc (seg, fixp) |
| 1773 | asection *seg ATTRIBUTE_UNUSED; |
| 1774 | fixS *fixp; |
| 1775 | { |
| 1776 | arelent *reloc; |
| 1777 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
| 1778 | |
| 1779 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 1780 | if (reloc->howto == (reloc_howto_type *) NULL) |
| 1781 | { |
| 1782 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 1783 | _("reloc %d not supported by object file format"), |
| 1784 | (int) fixp->fx_r_type); |
| 1785 | return NULL; |
| 1786 | } |
| 1787 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 1788 | |
| 1789 | if (fixp->fx_addsy && fixp->fx_subsy) |
| 1790 | { |
| 1791 | reloc->sym_ptr_ptr = NULL; |
| 1792 | |
| 1793 | /* If we got a difference between two symbols, and the |
| 1794 | subtracted symbol is in the current section, use a |
| 1795 | PC-relative relocation. If both symbols are in the same |
| 1796 | section, the difference would have already been simplified |
| 1797 | to a constant. */ |
| 1798 | if (S_GET_SEGMENT (fixp->fx_subsy) == seg) |
| 1799 | { |
| 1800 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 1801 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 1802 | reloc->addend = (reloc->address - S_GET_VALUE (fixp->fx_subsy) |
| 1803 | + fixp->fx_offset); |
| 1804 | |
| 1805 | switch (fixp->fx_r_type) |
| 1806 | { |
| 1807 | case BFD_RELOC_8: |
| 1808 | reloc->howto = bfd_reloc_type_lookup (stdoutput, |
| 1809 | BFD_RELOC_8_PCREL); |
| 1810 | return reloc; |
| 1811 | |
| 1812 | case BFD_RELOC_16: |
| 1813 | reloc->howto = bfd_reloc_type_lookup (stdoutput, |
| 1814 | BFD_RELOC_16_PCREL); |
| 1815 | return reloc; |
| 1816 | |
| 1817 | case BFD_RELOC_24: |
| 1818 | reloc->howto = bfd_reloc_type_lookup (stdoutput, |
| 1819 | BFD_RELOC_24_PCREL); |
| 1820 | return reloc; |
| 1821 | |
| 1822 | case BFD_RELOC_32: |
| 1823 | reloc->howto = bfd_reloc_type_lookup (stdoutput, |
| 1824 | BFD_RELOC_32_PCREL); |
| 1825 | return reloc; |
| 1826 | |
| 1827 | default: |
| 1828 | /* Try to compute the absolute value below. */ |
| 1829 | break; |
| 1830 | } |
| 1831 | } |
| 1832 | |
| 1833 | if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy)) |
| 1834 | || S_GET_SEGMENT (fixp->fx_addsy) == undefined_section) |
| 1835 | { |
| 1836 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 1837 | "Difference of symbols in different sections is not supported"); |
| 1838 | } |
| 1839 | else |
| 1840 | { |
| 1841 | char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal; |
| 1842 | |
| 1843 | reloc->addend = (S_GET_VALUE (fixp->fx_addsy) |
| 1844 | - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset); |
| 1845 | |
| 1846 | switch (fixp->fx_r_type) |
| 1847 | { |
| 1848 | case BFD_RELOC_8: |
| 1849 | md_number_to_chars (fixpos, reloc->addend, 1); |
| 1850 | break; |
| 1851 | |
| 1852 | case BFD_RELOC_16: |
| 1853 | md_number_to_chars (fixpos, reloc->addend, 2); |
| 1854 | break; |
| 1855 | |
| 1856 | case BFD_RELOC_24: |
| 1857 | md_number_to_chars (fixpos, reloc->addend, 3); |
| 1858 | break; |
| 1859 | |
| 1860 | case BFD_RELOC_32: |
| 1861 | md_number_to_chars (fixpos, reloc->addend, 4); |
| 1862 | break; |
| 1863 | |
| 1864 | default: |
| 1865 | reloc->sym_ptr_ptr = (asymbol **) &bfd_abs_symbol; |
| 1866 | return reloc; |
| 1867 | } |
| 1868 | } |
| 1869 | |
| 1870 | if (reloc->sym_ptr_ptr) |
| 1871 | free (reloc->sym_ptr_ptr); |
| 1872 | free (reloc); |
| 1873 | return NULL; |
| 1874 | } |
| 1875 | else |
| 1876 | { |
| 1877 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 1878 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 1879 | reloc->addend = fixp->fx_offset; |
| 1880 | } |
| 1881 | return reloc; |
| 1882 | } |
| 1883 | |
| 1884 | int |
| 1885 | md_estimate_size_before_relax (fragp, seg) |
| 1886 | fragS *fragp; |
| 1887 | asection *seg; |
| 1888 | { |
| 1889 | if (fragp->fr_subtype == 6 |
| 1890 | && (!S_IS_DEFINED (fragp->fr_symbol) |
| 1891 | || seg != S_GET_SEGMENT (fragp->fr_symbol))) |
| 1892 | fragp->fr_subtype = 7; |
| 1893 | else if (fragp->fr_subtype == 8 |
| 1894 | && (!S_IS_DEFINED (fragp->fr_symbol) |
| 1895 | || seg != S_GET_SEGMENT (fragp->fr_symbol))) |
| 1896 | fragp->fr_subtype = 9; |
| 1897 | else if (fragp->fr_subtype == 10 |
| 1898 | && (!S_IS_DEFINED (fragp->fr_symbol) |
| 1899 | || seg != S_GET_SEGMENT (fragp->fr_symbol))) |
| 1900 | fragp->fr_subtype = 12; |
| 1901 | |
| 1902 | if (fragp->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0])) |
| 1903 | abort (); |
| 1904 | |
| 1905 | return md_relax_table[fragp->fr_subtype].rlx_length; |
| 1906 | } |
| 1907 | |
| 1908 | long |
| 1909 | md_pcrel_from (fixp) |
| 1910 | fixS *fixp; |
| 1911 | { |
| 1912 | if (fixp->fx_addsy != (symbolS *) NULL && !S_IS_DEFINED (fixp->fx_addsy)) |
| 1913 | { |
| 1914 | /* The symbol is undefined. Let the linker figure it out. */ |
| 1915 | return 0; |
| 1916 | } |
| 1917 | return fixp->fx_frag->fr_address + fixp->fx_where; |
| 1918 | } |
| 1919 | |
| 1920 | void |
| 1921 | md_apply_fix3 (fixP, valP, seg) |
| 1922 | fixS * fixP; |
| 1923 | valueT * valP; |
| 1924 | segT seg; |
| 1925 | { |
| 1926 | char * fixpos = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 1927 | int size = 0; |
| 1928 | int value = (int) * valP; |
| 1929 | |
| 1930 | assert (fixP->fx_r_type < BFD_RELOC_UNUSED); |
| 1931 | |
| 1932 | /* This should never happen. */ |
| 1933 | if (seg->flags & SEC_ALLOC) |
| 1934 | abort (); |
| 1935 | |
| 1936 | /* The value we are passed in *valuep includes the symbol values. |
| 1937 | Since we are using BFD_ASSEMBLER, if we are doing this relocation |
| 1938 | the code in write.c is going to call bfd_install_relocation, which |
| 1939 | is also going to use the symbol value. That means that if the |
| 1940 | reloc is fully resolved we want to use *valuep since |
| 1941 | bfd_install_relocation is not being used. |
| 1942 | |
| 1943 | However, if the reloc is not fully resolved we do not want to use |
| 1944 | *valuep, and must use fx_offset instead. However, if the reloc |
| 1945 | is PC relative, we do want to use *valuep since it includes the |
| 1946 | result of md_pcrel_from. */ |
| 1947 | if (fixP->fx_addsy != (symbolS *) NULL && ! fixP->fx_pcrel) |
| 1948 | value = fixP->fx_offset; |
| 1949 | |
| 1950 | /* If the fix is relative to a symbol which is not defined, or not |
| 1951 | in the same segment as the fix, we cannot resolve it here. */ |
| 1952 | if (fixP->fx_addsy != NULL |
| 1953 | && (! S_IS_DEFINED (fixP->fx_addsy) |
| 1954 | || (S_GET_SEGMENT (fixP->fx_addsy) != seg))) |
| 1955 | { |
| 1956 | fixP->fx_done = 0; |
| 1957 | return; |
| 1958 | } |
| 1959 | |
| 1960 | switch (fixP->fx_r_type) |
| 1961 | { |
| 1962 | case BFD_RELOC_8: |
| 1963 | case BFD_RELOC_8_PCREL: |
| 1964 | size = 1; |
| 1965 | break; |
| 1966 | |
| 1967 | case BFD_RELOC_16: |
| 1968 | case BFD_RELOC_16_PCREL: |
| 1969 | size = 2; |
| 1970 | break; |
| 1971 | |
| 1972 | case BFD_RELOC_32: |
| 1973 | case BFD_RELOC_32_PCREL: |
| 1974 | size = 4; |
| 1975 | break; |
| 1976 | |
| 1977 | case BFD_RELOC_VTABLE_INHERIT: |
| 1978 | case BFD_RELOC_VTABLE_ENTRY: |
| 1979 | fixP->fx_done = 0; |
| 1980 | return; |
| 1981 | |
| 1982 | case BFD_RELOC_NONE: |
| 1983 | default: |
| 1984 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1985 | _("Bad relocation fixup type (%d)"), fixP->fx_r_type); |
| 1986 | } |
| 1987 | |
| 1988 | md_number_to_chars (fixpos, value, size); |
| 1989 | |
| 1990 | /* If a symbol remains, pass the fixup, as a reloc, onto the linker. */ |
| 1991 | if (fixP->fx_addsy == NULL) |
| 1992 | fixP->fx_done = 1; |
| 1993 | } |
| 1994 | |
| 1995 | /* Return zero if the fixup in fixp should be left alone and not |
| 1996 | adjusted. */ |
| 1997 | |
| 1998 | bfd_boolean |
| 1999 | mn10300_fix_adjustable (fixp) |
| 2000 | struct fix *fixp; |
| 2001 | { |
| 2002 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 2003 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 2004 | return 0; |
| 2005 | |
| 2006 | /* Do not adjust relocations involving symbols in code sections, |
| 2007 | because it breaks linker relaxations. This could be fixed in the |
| 2008 | linker, but this fix is simpler, and it pretty much only affects |
| 2009 | object size a little bit. */ |
| 2010 | if (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_CODE) |
| 2011 | return 0; |
| 2012 | |
| 2013 | return 1; |
| 2014 | } |
| 2015 | |
| 2016 | /* Insert an operand value into an instruction. */ |
| 2017 | |
| 2018 | static void |
| 2019 | mn10300_insert_operand (insnp, extensionp, operand, val, file, line, shift) |
| 2020 | unsigned long *insnp; |
| 2021 | unsigned long *extensionp; |
| 2022 | const struct mn10300_operand *operand; |
| 2023 | offsetT val; |
| 2024 | char *file; |
| 2025 | unsigned int line; |
| 2026 | unsigned int shift; |
| 2027 | { |
| 2028 | /* No need to check 32bit operands for a bit. Note that |
| 2029 | MN10300_OPERAND_SPLIT is an implicit 32bit operand. */ |
| 2030 | if (operand->bits != 32 |
| 2031 | && (operand->flags & MN10300_OPERAND_SPLIT) == 0) |
| 2032 | { |
| 2033 | long min, max; |
| 2034 | offsetT test; |
| 2035 | int bits; |
| 2036 | |
| 2037 | bits = operand->bits; |
| 2038 | if (operand->flags & MN10300_OPERAND_24BIT) |
| 2039 | bits = 24; |
| 2040 | |
| 2041 | if ((operand->flags & MN10300_OPERAND_SIGNED) != 0) |
| 2042 | { |
| 2043 | max = (1 << (bits - 1)) - 1; |
| 2044 | min = - (1 << (bits - 1)); |
| 2045 | } |
| 2046 | else |
| 2047 | { |
| 2048 | max = (1 << bits) - 1; |
| 2049 | min = 0; |
| 2050 | } |
| 2051 | |
| 2052 | test = val; |
| 2053 | |
| 2054 | if (test < (offsetT) min || test > (offsetT) max) |
| 2055 | { |
| 2056 | const char *err = |
| 2057 | _("operand out of range (%s not between %ld and %ld)"); |
| 2058 | char buf[100]; |
| 2059 | |
| 2060 | sprint_value (buf, test); |
| 2061 | if (file == (char *) NULL) |
| 2062 | as_warn (err, buf, min, max); |
| 2063 | else |
| 2064 | as_warn_where (file, line, err, buf, min, max); |
| 2065 | } |
| 2066 | } |
| 2067 | |
| 2068 | if ((operand->flags & MN10300_OPERAND_SPLIT) != 0) |
| 2069 | { |
| 2070 | *insnp |= (val >> (32 - operand->bits)) & ((1 << operand->bits) - 1); |
| 2071 | *extensionp |= ((val & ((1 << (32 - operand->bits)) - 1)) |
| 2072 | << operand->shift); |
| 2073 | } |
| 2074 | else if ((operand->flags & MN10300_OPERAND_24BIT) != 0) |
| 2075 | { |
| 2076 | *insnp |= (val >> (24 - operand->bits)) & ((1 << operand->bits) - 1); |
| 2077 | *extensionp |= ((val & ((1 << (24 - operand->bits)) - 1)) |
| 2078 | << operand->shift); |
| 2079 | } |
| 2080 | else if ((operand->flags & MN10300_OPERAND_EXTENDED) == 0) |
| 2081 | { |
| 2082 | *insnp |= (((long) val & ((1 << operand->bits) - 1)) |
| 2083 | << (operand->shift + shift)); |
| 2084 | |
| 2085 | if ((operand->flags & MN10300_OPERAND_REPEATED) != 0) |
| 2086 | *insnp |= (((long) val & ((1 << operand->bits) - 1)) |
| 2087 | << (operand->shift + shift + operand->bits)); |
| 2088 | } |
| 2089 | else |
| 2090 | { |
| 2091 | *extensionp |= (((long) val & ((1 << operand->bits) - 1)) |
| 2092 | << (operand->shift + shift)); |
| 2093 | |
| 2094 | if ((operand->flags & MN10300_OPERAND_REPEATED) != 0) |
| 2095 | *extensionp |= (((long) val & ((1 << operand->bits) - 1)) |
| 2096 | << (operand->shift + shift + operand->bits)); |
| 2097 | } |
| 2098 | } |
| 2099 | |
| 2100 | static unsigned long |
| 2101 | check_operand (insn, operand, val) |
| 2102 | unsigned long insn ATTRIBUTE_UNUSED; |
| 2103 | const struct mn10300_operand *operand; |
| 2104 | offsetT val; |
| 2105 | { |
| 2106 | /* No need to check 32bit operands for a bit. Note that |
| 2107 | MN10300_OPERAND_SPLIT is an implicit 32bit operand. */ |
| 2108 | if (operand->bits != 32 |
| 2109 | && (operand->flags & MN10300_OPERAND_SPLIT) == 0) |
| 2110 | { |
| 2111 | long min, max; |
| 2112 | offsetT test; |
| 2113 | int bits; |
| 2114 | |
| 2115 | bits = operand->bits; |
| 2116 | if (operand->flags & MN10300_OPERAND_24BIT) |
| 2117 | bits = 24; |
| 2118 | |
| 2119 | if ((operand->flags & MN10300_OPERAND_SIGNED) != 0) |
| 2120 | { |
| 2121 | max = (1 << (bits - 1)) - 1; |
| 2122 | min = - (1 << (bits - 1)); |
| 2123 | } |
| 2124 | else |
| 2125 | { |
| 2126 | max = (1 << bits) - 1; |
| 2127 | min = 0; |
| 2128 | } |
| 2129 | |
| 2130 | test = val; |
| 2131 | |
| 2132 | if (test < (offsetT) min || test > (offsetT) max) |
| 2133 | return 0; |
| 2134 | else |
| 2135 | return 1; |
| 2136 | } |
| 2137 | return 1; |
| 2138 | } |
| 2139 | |
| 2140 | static void |
| 2141 | set_arch_mach (mach) |
| 2142 | int mach; |
| 2143 | { |
| 2144 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, mach)) |
| 2145 | as_warn (_("could not set architecture and machine")); |
| 2146 | |
| 2147 | current_machine = mach; |
| 2148 | } |