| 1 | /* tc-ldx.c -- Assemble for the DLX |
| 2 | Copyright 2002, 2003 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 19 | 02111-1307, USA. */ |
| 20 | |
| 21 | /* Initially created by Kuang Hwa Lin, 3/20/2002. */ |
| 22 | |
| 23 | #include "safe-ctype.h" |
| 24 | #include "as.h" |
| 25 | #include "tc-dlx.h" |
| 26 | #include "opcode/dlx.h" |
| 27 | #if 0 |
| 28 | #include "elf/dlx.h" |
| 29 | #endif |
| 30 | |
| 31 | /* Make it easier to clone this machine desc into another one. */ |
| 32 | #define machine_opcode dlx_opcode |
| 33 | #define machine_opcodes dlx_opcodes |
| 34 | #define machine_ip dlx_ip |
| 35 | #define machine_it dlx_it |
| 36 | |
| 37 | #define NO_RELOC BFD_RELOC_NONE |
| 38 | #define RELOC_DLX_REL26 BFD_RELOC_DLX_JMP26 |
| 39 | #define RELOC_DLX_16 BFD_RELOC_16 |
| 40 | #define RELOC_DLX_REL16 BFD_RELOC_16_PCREL_S2 |
| 41 | #define RELOC_DLX_HI16 BFD_RELOC_HI16_S |
| 42 | #define RELOC_DLX_LO16 BFD_RELOC_LO16 |
| 43 | #define RELOC_DLX_VTINHERIT BFD_RELOC_VTABLE_INHERIT |
| 44 | #define RELOC_DLX_VTENTRY BFD_RELOC_VTABLE_ENTRY |
| 45 | |
| 46 | /* handle of the OPCODE hash table */ |
| 47 | static struct hash_control *op_hash = NULL; |
| 48 | |
| 49 | struct machine_it |
| 50 | { |
| 51 | char *error; |
| 52 | unsigned long opcode; |
| 53 | struct nlist *nlistp; |
| 54 | expressionS exp; |
| 55 | int pcrel; |
| 56 | int size; |
| 57 | int reloc_offset; /* Offset of reloc within insn. */ |
| 58 | int reloc; |
| 59 | int HI; |
| 60 | int LO; |
| 61 | } |
| 62 | the_insn; |
| 63 | |
| 64 | /* static void print_insn PARAMS ((struct machine_it *)); */ |
| 65 | char * parse_operand PARAMS ((char *, expressionS *)); |
| 66 | int md_chars_to_number PARAMS ((unsigned char *, int)); |
| 67 | |
| 68 | static void machine_ip PARAMS ((char *)); |
| 69 | static void s_proc PARAMS ((int)); |
| 70 | static void insert_sreg PARAMS ((char *, int)); |
| 71 | static int hilo_modifier_ok PARAMS ((char *)); |
| 72 | static int is_ldst_registers PARAMS ((char *)); |
| 73 | static int match_sft_register PARAMS ((char *)); |
| 74 | static void define_some_regs PARAMS ((void)); |
| 75 | static char * dlx_parse_loadop PARAMS ((char *)); |
| 76 | static char * dlx_parse_storeop PARAMS ((char *)); |
| 77 | static char * fix_ld_st_operand PARAMS ((unsigned long, char *)); |
| 78 | |
| 79 | const pseudo_typeS |
| 80 | |
| 81 | dlx_pseudo_table[] = |
| 82 | { |
| 83 | /* Some additional ops that are used by gcc-dlx. */ |
| 84 | {"asciiz", stringer, 1}, |
| 85 | {"half", cons, 2}, |
| 86 | {"dword", cons, 8}, |
| 87 | {"word", cons, 4}, |
| 88 | {"proc", s_proc, 0}, |
| 89 | {"endproc", s_proc, 1}, |
| 90 | {NULL, 0, 0}, |
| 91 | }; |
| 92 | |
| 93 | /* This array holds the chars that always start a comment. If the |
| 94 | pre-processor is disabled, these aren't very useful. */ |
| 95 | const char comment_chars[] = ";"; |
| 96 | |
| 97 | /* This array holds the chars that only start a comment at the beginning of |
| 98 | a line. If the line seems to have the form '# 123 filename' |
| 99 | .line and .file directives will appear in the pre-processed output. */ |
| 100 | /* Note that input_file.c hand checks for '#' at the beginning of the |
| 101 | first line of the input file. This is because the compiler outputs |
| 102 | #NO_APP at the beginning of its output. */ |
| 103 | /* Also note that comments like this one will always work. */ |
| 104 | const char line_comment_chars[] = "#"; |
| 105 | |
| 106 | /* We needed an unused char for line separation to work around the |
| 107 | lack of macros, using sed and such. */ |
| 108 | const char line_separator_chars[] = "@"; |
| 109 | |
| 110 | /* Chars that can be used to separate mant from exp in floating point nums. */ |
| 111 | const char EXP_CHARS[] = "eE"; |
| 112 | |
| 113 | /* Chars that mean this number is a floating point constant. |
| 114 | As in 0f12.456 |
| 115 | or 0d1.2345e12. */ |
| 116 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
| 117 | |
| 118 | static void |
| 119 | insert_sreg (regname, regnum) |
| 120 | char *regname; |
| 121 | int regnum; |
| 122 | { |
| 123 | /* Must be large enough to hold the names of the special registers. */ |
| 124 | char buf[80]; |
| 125 | int i; |
| 126 | |
| 127 | symbol_table_insert (symbol_new (regname, reg_section, (valueT) regnum, |
| 128 | &zero_address_frag)); |
| 129 | for (i = 0; regname[i]; i++) |
| 130 | buf[i] = ISLOWER (regname[i]) ? TOUPPER (regname[i]) : regname[i]; |
| 131 | buf[i] = '\0'; |
| 132 | |
| 133 | symbol_table_insert (symbol_new (buf, reg_section, (valueT) regnum, |
| 134 | &zero_address_frag)); |
| 135 | } |
| 136 | |
| 137 | /* Install symbol definitions for assorted special registers. |
| 138 | See MIPS Assembly Language Programmer's Guide page 1-4 */ |
| 139 | |
| 140 | static void |
| 141 | define_some_regs () |
| 142 | { |
| 143 | #if 0 |
| 144 | /* Hardware representation. */ |
| 145 | insert_sreg ("r0", 0); |
| 146 | insert_sreg ("r1", 1); |
| 147 | insert_sreg ("r2", 2); |
| 148 | insert_sreg ("r3", 3); |
| 149 | insert_sreg ("r4", 4); |
| 150 | insert_sreg ("r5", 5); |
| 151 | insert_sreg ("r6", 6); |
| 152 | insert_sreg ("r7", 7); |
| 153 | insert_sreg ("r8", 8); |
| 154 | insert_sreg ("r9", 9); |
| 155 | insert_sreg ("r10", 10); |
| 156 | insert_sreg ("r11", 11); |
| 157 | insert_sreg ("r12", 12); |
| 158 | insert_sreg ("r13", 13); |
| 159 | insert_sreg ("r14", 14); |
| 160 | insert_sreg ("r15", 15); |
| 161 | insert_sreg ("r16", 16); |
| 162 | insert_sreg ("r17", 17); |
| 163 | insert_sreg ("r18", 18); |
| 164 | insert_sreg ("r19", 19); |
| 165 | insert_sreg ("r20", 20); |
| 166 | insert_sreg ("r21", 21); |
| 167 | insert_sreg ("r22", 22); |
| 168 | insert_sreg ("r23", 23); |
| 169 | insert_sreg ("r24", 24); |
| 170 | insert_sreg ("r25", 25); |
| 171 | insert_sreg ("r26", 26); |
| 172 | insert_sreg ("r27", 27); |
| 173 | insert_sreg ("r28", 28); |
| 174 | insert_sreg ("r29", 29); |
| 175 | insert_sreg ("r30", 30); |
| 176 | insert_sreg ("r31", 31); |
| 177 | #endif |
| 178 | /* Software representation. */ |
| 179 | insert_sreg ("zero", 0); |
| 180 | insert_sreg ("at", 1); |
| 181 | insert_sreg ("v0", 2); |
| 182 | insert_sreg ("v1", 3); |
| 183 | insert_sreg ("a0", 4); |
| 184 | insert_sreg ("a1", 5); |
| 185 | insert_sreg ("a2", 6); |
| 186 | insert_sreg ("a3", 7); |
| 187 | insert_sreg ("t0", 8); |
| 188 | insert_sreg ("t1", 9); |
| 189 | insert_sreg ("t2", 10); |
| 190 | insert_sreg ("t3", 11); |
| 191 | insert_sreg ("t4", 12); |
| 192 | insert_sreg ("t5", 13); |
| 193 | insert_sreg ("t6", 14); |
| 194 | insert_sreg ("t7", 15); |
| 195 | insert_sreg ("s0", 16); |
| 196 | insert_sreg ("s1", 17); |
| 197 | insert_sreg ("s2", 18); |
| 198 | insert_sreg ("s3", 19); |
| 199 | insert_sreg ("s4", 20); |
| 200 | insert_sreg ("s5", 21); |
| 201 | insert_sreg ("s6", 22); |
| 202 | insert_sreg ("s7", 23); |
| 203 | insert_sreg ("t8", 24); |
| 204 | insert_sreg ("t9", 25); |
| 205 | insert_sreg ("k0", 26); |
| 206 | insert_sreg ("k1", 27); |
| 207 | insert_sreg ("gp", 28); |
| 208 | insert_sreg ("sp", 29); |
| 209 | insert_sreg ("fp", 30); |
| 210 | insert_sreg ("ra", 31); |
| 211 | /* Special registers. */ |
| 212 | insert_sreg ("pc", 0); |
| 213 | insert_sreg ("npc", 1); |
| 214 | insert_sreg ("iad", 2); |
| 215 | } |
| 216 | |
| 217 | /* Subroutine check the string to match an register, */ |
| 218 | |
| 219 | static int |
| 220 | match_sft_register (name) |
| 221 | char *name; |
| 222 | { |
| 223 | #define MAX_REG_NO 35 |
| 224 | /* Currently we have 35 software registers defined - |
| 225 | we borrowed from MIPS. */ |
| 226 | static char *soft_reg[] = |
| 227 | { |
| 228 | "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", |
| 229 | "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8", "t9", |
| 230 | "s0", "s1", "s2", "s3", "s4", "s5", "s7", "k0", "k1", |
| 231 | "gp", "sp", "fp", "ra", "pc", "npc", "iad", |
| 232 | "EndofTab" /* End of the Table indicator */ |
| 233 | }; |
| 234 | char low_name[21], *ptr; |
| 235 | int idx; |
| 236 | |
| 237 | for (ptr = name,idx = 0; *ptr != '\0'; ptr++) |
| 238 | low_name[idx++] = TOLOWER (*ptr); |
| 239 | |
| 240 | low_name[idx] = '\0'; |
| 241 | idx = 0; |
| 242 | |
| 243 | while (idx < MAX_REG_NO && strcmp (soft_reg[idx], & low_name [0])) |
| 244 | idx += 1; |
| 245 | |
| 246 | return idx < MAX_REG_NO; |
| 247 | } |
| 248 | |
| 249 | /* Subroutine check the string to match an register. */ |
| 250 | |
| 251 | static int |
| 252 | is_ldst_registers (name) |
| 253 | char *name; |
| 254 | { |
| 255 | char *ptr = name; |
| 256 | |
| 257 | /* The first character of the register name got to be either %, $, r of R. */ |
| 258 | if ((ptr[0] == '%' || ptr[0] == '$' || ptr[0] == 'r' || ptr[0] == 'R') |
| 259 | && ISDIGIT ((unsigned char) ptr[1])) |
| 260 | return 1; |
| 261 | |
| 262 | /* Now check the software register representation. */ |
| 263 | return match_sft_register (ptr); |
| 264 | } |
| 265 | |
| 266 | /* Subroutine of s_proc so targets can choose a different default prefix. |
| 267 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ |
| 268 | |
| 269 | static void |
| 270 | s_proc (end_p) |
| 271 | int end_p; |
| 272 | { |
| 273 | /* Record the current function so that we can issue an error message for |
| 274 | misplaced .func,.endfunc, and also so that .endfunc needs no |
| 275 | arguments. */ |
| 276 | static char *current_name; |
| 277 | static char *current_label; |
| 278 | |
| 279 | if (end_p) |
| 280 | { |
| 281 | if (current_name == NULL) |
| 282 | { |
| 283 | as_bad (_("missing .proc")); |
| 284 | ignore_rest_of_line (); |
| 285 | return; |
| 286 | } |
| 287 | |
| 288 | current_name = current_label = NULL; |
| 289 | SKIP_WHITESPACE (); |
| 290 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
| 291 | input_line_pointer++; |
| 292 | } |
| 293 | else |
| 294 | { |
| 295 | char *name, *label; |
| 296 | char delim1, delim2; |
| 297 | |
| 298 | if (current_name != NULL) |
| 299 | { |
| 300 | as_bad (_(".endfunc missing for previous .proc")); |
| 301 | ignore_rest_of_line (); |
| 302 | return; |
| 303 | } |
| 304 | |
| 305 | name = input_line_pointer; |
| 306 | delim1 = get_symbol_end (); |
| 307 | name = xstrdup (name); |
| 308 | *input_line_pointer = delim1; |
| 309 | SKIP_WHITESPACE (); |
| 310 | |
| 311 | if (*input_line_pointer != ',') |
| 312 | { |
| 313 | char leading_char = 0; |
| 314 | |
| 315 | leading_char = bfd_get_symbol_leading_char (stdoutput); |
| 316 | /* Missing entry point, use function's name with the leading |
| 317 | char prepended. */ |
| 318 | if (leading_char) |
| 319 | asprintf (&label, "%c%s", leading_char, name); |
| 320 | else |
| 321 | label = name; |
| 322 | } |
| 323 | else |
| 324 | { |
| 325 | ++input_line_pointer; |
| 326 | SKIP_WHITESPACE (); |
| 327 | label = input_line_pointer; |
| 328 | delim2 = get_symbol_end (); |
| 329 | label = xstrdup (label); |
| 330 | *input_line_pointer = delim2; |
| 331 | } |
| 332 | |
| 333 | current_name = name; |
| 334 | current_label = label; |
| 335 | } |
| 336 | demand_empty_rest_of_line (); |
| 337 | } |
| 338 | |
| 339 | /* This function is called once, at assembler startup time. It should |
| 340 | set up all the tables, etc., that the MD part of the assembler will |
| 341 | need. */ |
| 342 | |
| 343 | void |
| 344 | md_begin () |
| 345 | { |
| 346 | const char *retval = NULL; |
| 347 | int lose = 0; |
| 348 | unsigned int i; |
| 349 | |
| 350 | /* Create a new hash table. */ |
| 351 | op_hash = hash_new (); |
| 352 | |
| 353 | /* Hash up all the opcodes for fast use later. */ |
| 354 | for (i = 0; i < num_dlx_opcodes; i++) |
| 355 | { |
| 356 | const char *name = machine_opcodes[i].name; |
| 357 | |
| 358 | retval = hash_insert (op_hash, name, (PTR) &machine_opcodes[i]); |
| 359 | |
| 360 | if (retval != NULL) |
| 361 | { |
| 362 | fprintf (stderr, "internal error: can't hash `%s': %s\n", |
| 363 | machine_opcodes[i].name, retval); |
| 364 | lose = 1; |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | if (lose) |
| 369 | as_fatal (_("Broken assembler. No assembly attempted.")); |
| 370 | |
| 371 | define_some_regs (); |
| 372 | return; |
| 373 | } |
| 374 | |
| 375 | /* Assemble a single instruction. Its label has already been handled |
| 376 | by the generic front end. We just parse opcode and operands, and |
| 377 | produce the bytes of data and relocation. */ |
| 378 | |
| 379 | void |
| 380 | md_assemble (str) |
| 381 | char *str; |
| 382 | { |
| 383 | char *toP; |
| 384 | fixS *fixP; |
| 385 | bit_fixS *bitP; |
| 386 | |
| 387 | know (str); |
| 388 | machine_ip (str); |
| 389 | toP = frag_more (4); |
| 390 | /* Put out the opcode. */ |
| 391 | md_number_to_chars (toP, the_insn.opcode, 4); |
| 392 | |
| 393 | /* Put out the symbol-dependent stuff. */ |
| 394 | if (the_insn.reloc != NO_RELOC) |
| 395 | { |
| 396 | fixP = fix_new_exp (frag_now, |
| 397 | (toP - frag_now->fr_literal + the_insn.reloc_offset), |
| 398 | the_insn.size, & the_insn.exp, the_insn.pcrel, |
| 399 | the_insn.reloc); |
| 400 | |
| 401 | switch (fixP->fx_r_type) |
| 402 | { |
| 403 | case RELOC_DLX_REL26: |
| 404 | bitP = malloc (sizeof (bit_fixS)); |
| 405 | bitP->fx_bit_size = 26; |
| 406 | bitP->fx_bit_offset = 25; |
| 407 | bitP->fx_bit_base = the_insn.opcode & 0xFC000000; |
| 408 | bitP->fx_bit_base_adj = 0; |
| 409 | bitP->fx_bit_max = 0; |
| 410 | bitP->fx_bit_min = 0; |
| 411 | bitP->fx_bit_add = 0x03FFFFFF; |
| 412 | fixP->fx_bit_fixP = bitP; |
| 413 | break; |
| 414 | case RELOC_DLX_REL16: |
| 415 | bitP = malloc (sizeof (bit_fixS)); |
| 416 | bitP->fx_bit_size = 16; |
| 417 | bitP->fx_bit_offset = 15; |
| 418 | bitP->fx_bit_base = the_insn.opcode & 0xFFFF0000; |
| 419 | bitP->fx_bit_base_adj = 0; |
| 420 | bitP->fx_bit_max = 0; |
| 421 | bitP->fx_bit_min = 0; |
| 422 | bitP->fx_bit_add = 0x0000FFFF; |
| 423 | fixP->fx_bit_fixP = bitP; |
| 424 | break; |
| 425 | case RELOC_DLX_HI16: |
| 426 | bitP = malloc (sizeof (bit_fixS)); |
| 427 | bitP->fx_bit_size = 16; |
| 428 | bitP->fx_bit_offset = 15; |
| 429 | bitP->fx_bit_base = the_insn.opcode & 0xFFFF0000; |
| 430 | bitP->fx_bit_base_adj = 0; |
| 431 | bitP->fx_bit_max = 0; |
| 432 | bitP->fx_bit_min = 0; |
| 433 | bitP->fx_bit_add = 0x0000FFFF; |
| 434 | fixP->fx_bit_fixP = bitP; |
| 435 | break; |
| 436 | default: |
| 437 | fixP->fx_bit_fixP = (bit_fixS *)NULL; |
| 438 | break; |
| 439 | } |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | static int |
| 444 | hilo_modifier_ok (s) |
| 445 | char *s; |
| 446 | { |
| 447 | char *ptr = s; |
| 448 | int idx, count = 1; |
| 449 | |
| 450 | if (*ptr != '(') |
| 451 | return 1; |
| 452 | |
| 453 | for (idx = 1; ptr[idx] != '\0' && ptr[idx] != '[' && idx < 73; idx += 1) |
| 454 | { |
| 455 | if (count == 0) |
| 456 | return count; |
| 457 | |
| 458 | if (ptr[idx] == '(') |
| 459 | count += 1; |
| 460 | |
| 461 | if (ptr[idx] == ')') |
| 462 | count -= 1; |
| 463 | } |
| 464 | |
| 465 | return (count == 0) ? 1:0; |
| 466 | } |
| 467 | |
| 468 | char * |
| 469 | parse_operand (s, operandp) |
| 470 | char *s; |
| 471 | expressionS *operandp; |
| 472 | { |
| 473 | char *save = input_line_pointer; |
| 474 | char *new; |
| 475 | |
| 476 | the_insn.HI = the_insn.LO = 0; |
| 477 | |
| 478 | /* Search for %hi and %lo, make a mark and skip it. */ |
| 479 | if (strncmp (s, "%hi", 3) == 0) |
| 480 | { |
| 481 | s += 3; |
| 482 | the_insn.HI = 1; |
| 483 | } |
| 484 | else |
| 485 | { |
| 486 | if (strncmp (s, "%lo", 3) == 0) |
| 487 | { |
| 488 | s += 3; |
| 489 | the_insn.LO = 1; |
| 490 | } |
| 491 | else |
| 492 | the_insn.LO = 0; |
| 493 | } |
| 494 | |
| 495 | if (the_insn.HI || the_insn.LO) |
| 496 | { |
| 497 | if (!hilo_modifier_ok (s)) |
| 498 | as_bad (_("Expression Error for operand modifier %%hi/%%lo\n")); |
| 499 | } |
| 500 | |
| 501 | /* Check for the % and $ register representation */ |
| 502 | if ((s[0] == '%' || s[0] == '$' || s[0] == 'r' || s[0] == 'R') |
| 503 | && ISDIGIT ((unsigned char) s[1])) |
| 504 | { |
| 505 | /* We have a numeric register expression. No biggy. */ |
| 506 | s += 1; |
| 507 | input_line_pointer = s; |
| 508 | (void) expression (operandp); |
| 509 | if (operandp->X_op != O_constant |
| 510 | || operandp->X_add_number > 31) |
| 511 | as_bad (_("Invalid expression after %%%%\n")); |
| 512 | operandp->X_op = O_register; |
| 513 | } |
| 514 | else |
| 515 | { |
| 516 | /* Normal operand parsing. */ |
| 517 | input_line_pointer = s; |
| 518 | (void) expression (operandp); |
| 519 | } |
| 520 | |
| 521 | new = input_line_pointer; |
| 522 | input_line_pointer = save; |
| 523 | return new; |
| 524 | } |
| 525 | |
| 526 | /* This function will check the opcode and return 1 if the opcode is one |
| 527 | of the load/store instruction, and it will fix the operand string to |
| 528 | the standard form so we can use the standard parse_operand routine. */ |
| 529 | |
| 530 | #define READ_OP 0x100 |
| 531 | #define WRITE_OP 0x200 |
| 532 | static char iBuf[81]; |
| 533 | |
| 534 | static char * |
| 535 | dlx_parse_loadop (str) |
| 536 | char * str; |
| 537 | { |
| 538 | char *ptr = str; |
| 539 | int idx = 0; |
| 540 | |
| 541 | /* The last pair of ()/[] is the register, all other are the |
| 542 | reloc displacement, and if there is a register then it ought |
| 543 | to have a pair of ()/[] |
| 544 | This is not necessarily true, what if the load instruction come |
| 545 | without the register and with %hi/%lo modifier? */ |
| 546 | for (idx = 0; idx < 72 && ptr[idx] != '\0'; idx++) |
| 547 | ; |
| 548 | |
| 549 | if (idx == 72) |
| 550 | { |
| 551 | badoperand_load: |
| 552 | as_bad (_("Bad operand for a load instruction: <%s>"), str); |
| 553 | return NULL; |
| 554 | } |
| 555 | else |
| 556 | { |
| 557 | int i, pb = 0; |
| 558 | int m2 = 0; |
| 559 | char rs1[7], rd[7], endm, match = '0'; |
| 560 | char imm[72]; |
| 561 | |
| 562 | idx -= 1; |
| 563 | switch (str[idx]) |
| 564 | { |
| 565 | case ')': |
| 566 | match = '('; |
| 567 | endm = ')'; |
| 568 | break; |
| 569 | case ']': |
| 570 | match = '['; |
| 571 | endm = ']'; |
| 572 | break; |
| 573 | default: |
| 574 | /* No register indicated, fill in zero. */ |
| 575 | rs1[0] = 'r'; |
| 576 | rs1[1] = '0'; |
| 577 | rs1[2] = '\0'; |
| 578 | match = 0; |
| 579 | endm = 0; |
| 580 | m2 = 1; |
| 581 | } |
| 582 | |
| 583 | if (!m2) |
| 584 | { |
| 585 | /* Searching for (/[ which will match the ]/). */ |
| 586 | for (pb = idx - 1; str[pb] != match; pb -= 1) |
| 587 | /* Match can only be either '[' or '(', if it is |
| 588 | '(' then this can be a normal expression, we'll treat |
| 589 | it as an operand. */ |
| 590 | if (str[pb] == endm || pb < (idx - 5)) |
| 591 | goto load_no_rs1; |
| 592 | pb += 1; |
| 593 | |
| 594 | for (i = 0; (pb + i) < idx; i++) |
| 595 | rs1[i] = str[pb+i]; |
| 596 | |
| 597 | rs1[i] = '\0'; |
| 598 | |
| 599 | if (is_ldst_registers (& rs1[0])) |
| 600 | /* Point to the last character of the imm. */ |
| 601 | pb -= 1; |
| 602 | else |
| 603 | { |
| 604 | load_no_rs1: |
| 605 | if (match == '[') |
| 606 | goto badoperand_load; |
| 607 | /* No register indicated, fill in zero and restore the imm. */ |
| 608 | rs1[0] = 'r'; |
| 609 | rs1[1] = '0'; |
| 610 | rs1[2] = '\0'; |
| 611 | m2 = 1; |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | /* Duplicate the first register. */ |
| 616 | for (i = 0; i < 7 && str[i] != ','; i++) |
| 617 | rd[i] = ptr[i]; |
| 618 | |
| 619 | if (str[i] != ',') |
| 620 | goto badoperand_load; |
| 621 | else |
| 622 | rd[i] = '\0'; |
| 623 | |
| 624 | /* Copy the immd. */ |
| 625 | if (m2) |
| 626 | /* Put the '\0' back in. */ |
| 627 | pb = idx + 1; |
| 628 | |
| 629 | for (i++, m2 = 0; i < pb; m2++,i++) |
| 630 | imm[m2] = ptr[i]; |
| 631 | |
| 632 | imm[m2] = '\0'; |
| 633 | |
| 634 | /* Assemble the instruction to gas intrernal format. */ |
| 635 | for (i = 0; rd[i] != '\0'; i++) |
| 636 | iBuf[i] = rd[i]; |
| 637 | |
| 638 | iBuf[i++] = ','; |
| 639 | |
| 640 | for (pb = 0 ; rs1[pb] != '\0'; i++, pb++) |
| 641 | iBuf[i] = rs1[pb]; |
| 642 | |
| 643 | iBuf[i++] = ','; |
| 644 | |
| 645 | for (pb = 0; imm[pb] != '\0'; i++, pb++) |
| 646 | iBuf[i] = imm[pb]; |
| 647 | |
| 648 | iBuf[i] = '\0'; |
| 649 | return iBuf; |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | static char * |
| 654 | dlx_parse_storeop (str) |
| 655 | char * str; |
| 656 | { |
| 657 | char *ptr = str; |
| 658 | int idx = 0; |
| 659 | |
| 660 | /* Search for the ','. */ |
| 661 | for (idx = 0; idx < 72 && ptr[idx] != ','; idx++) |
| 662 | ; |
| 663 | |
| 664 | if (idx == 72) |
| 665 | { |
| 666 | badoperand_store: |
| 667 | as_bad (_("Bad operand for a store instruction: <%s>"), str); |
| 668 | return NULL; |
| 669 | } |
| 670 | else |
| 671 | { |
| 672 | /* idx now points to the ','. */ |
| 673 | int i, pb = 0; |
| 674 | int comma = idx; |
| 675 | int m2 = 0; |
| 676 | char rs1[7], rd[7], endm, match = '0'; |
| 677 | char imm[72]; |
| 678 | |
| 679 | /* Now parse the '(' and ')', and make idx point to ')'. */ |
| 680 | idx -= 1; |
| 681 | switch (str[idx]) |
| 682 | { |
| 683 | case ')': |
| 684 | match = '('; |
| 685 | endm = ')'; |
| 686 | break; |
| 687 | case ']': |
| 688 | match = '['; |
| 689 | endm = ']'; |
| 690 | break; |
| 691 | default: |
| 692 | /* No register indicated, fill in zero. */ |
| 693 | rs1[0] = 'r'; |
| 694 | rs1[1] = '0'; |
| 695 | rs1[2] = '\0'; |
| 696 | match = 0; |
| 697 | endm = 0; |
| 698 | m2 = 1; |
| 699 | } |
| 700 | |
| 701 | if (!m2) |
| 702 | { |
| 703 | /* Searching for (/[ which will match the ]/). */ |
| 704 | for (pb = idx - 1; str[pb] != match; pb -= 1) |
| 705 | if (pb < (idx - 5) || str[pb] == endm) |
| 706 | goto store_no_rs1; |
| 707 | pb += 1; |
| 708 | |
| 709 | for (i = 0; (pb + i) < idx; i++) |
| 710 | rs1[i] = str[pb + i]; |
| 711 | |
| 712 | rs1[i] = '\0'; |
| 713 | |
| 714 | if (is_ldst_registers (& rs1[0])) |
| 715 | /* Point to the last character of the imm. */ |
| 716 | pb -= 1; |
| 717 | else |
| 718 | { |
| 719 | store_no_rs1: |
| 720 | if (match == '[') |
| 721 | goto badoperand_store; |
| 722 | |
| 723 | /* No register indicated, fill in zero and restore the imm. */ |
| 724 | rs1[0] = 'r'; |
| 725 | rs1[1] = '0'; |
| 726 | rs1[2] = '\0'; |
| 727 | pb = comma; |
| 728 | } |
| 729 | } |
| 730 | else |
| 731 | /* No register was specified. */ |
| 732 | pb = comma; |
| 733 | |
| 734 | /* Duplicate the first register. */ |
| 735 | for (i = comma + 1; (str[i] == ' ' || str[i] == '\t'); i++) |
| 736 | ; |
| 737 | |
| 738 | for (m2 = 0; (m2 < 7 && str[i] != '\0'); i++, m2++) |
| 739 | { |
| 740 | if (str[i] != ' ' && str[i] != '\t') |
| 741 | rd[m2] = str[i]; |
| 742 | else |
| 743 | goto badoperand_store; |
| 744 | } |
| 745 | |
| 746 | if (str[i] != '\0') |
| 747 | goto badoperand_store; |
| 748 | else |
| 749 | rd[m2] = '\0'; |
| 750 | |
| 751 | /* Copy the immd. */ |
| 752 | for (i = 0; i < pb; i++) |
| 753 | imm[i] = ptr[i]; |
| 754 | |
| 755 | imm[i] = '\0'; |
| 756 | |
| 757 | /* Assemble the instruction to gas intrernal format. */ |
| 758 | for (i = 0; rd[i] != '\0'; i++) |
| 759 | iBuf[i] = rd[i]; |
| 760 | iBuf[i++] = ','; |
| 761 | for (pb = 0 ; rs1[pb] != '\0'; i++, pb++) |
| 762 | iBuf[i] = rs1[pb]; |
| 763 | iBuf[i++] = ','; |
| 764 | for (pb = 0; imm[pb] != '\0'; i++, pb++) |
| 765 | iBuf[i] = imm[pb]; |
| 766 | iBuf[i] = '\0'; |
| 767 | return iBuf; |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | static char * |
| 772 | fix_ld_st_operand (opcode, str) |
| 773 | unsigned long opcode; |
| 774 | char* str; |
| 775 | { |
| 776 | /* Check the opcode. */ |
| 777 | switch ((int) opcode) |
| 778 | { |
| 779 | case LBOP: |
| 780 | case LBUOP: |
| 781 | case LSBUOP: |
| 782 | case LHOP: |
| 783 | case LHUOP: |
| 784 | case LSHUOP: |
| 785 | case LWOP: |
| 786 | case LSWOP: |
| 787 | return dlx_parse_loadop (str); |
| 788 | case SBOP: |
| 789 | case SHOP: |
| 790 | case SWOP: |
| 791 | return dlx_parse_storeop (str); |
| 792 | default: |
| 793 | return str; |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | /* Instruction parsing. Takes a string containing the opcode. |
| 798 | Operands are at input_line_pointer. Output is in the_insn. |
| 799 | Warnings or errors are generated. */ |
| 800 | |
| 801 | static void |
| 802 | machine_ip (str) |
| 803 | char *str; |
| 804 | { |
| 805 | char *s; |
| 806 | const char *args; |
| 807 | struct machine_opcode *insn; |
| 808 | char *argsStart; |
| 809 | unsigned long opcode; |
| 810 | expressionS the_operand; |
| 811 | expressionS *operand = &the_operand; |
| 812 | unsigned int reg, reg_shift = 0; |
| 813 | |
| 814 | /* Fixup the opcode string to all lower cases, and also |
| 815 | allow numerical digits. */ |
| 816 | s = str; |
| 817 | |
| 818 | if (ISALPHA (*s)) |
| 819 | for (; ISALNUM (*s); ++s) |
| 820 | if (ISUPPER (*s)) |
| 821 | *s = TOLOWER (*s); |
| 822 | |
| 823 | switch (*s) |
| 824 | { |
| 825 | case '\0': |
| 826 | break; |
| 827 | |
| 828 | /* FIXME-SOMEDAY more whitespace. */ |
| 829 | case ' ': |
| 830 | *s++ = '\0'; |
| 831 | break; |
| 832 | |
| 833 | default: |
| 834 | as_bad (_("Unknown opcode: `%s'"), str); |
| 835 | return; |
| 836 | } |
| 837 | |
| 838 | /* Hash the opcode, insn will have the string from opcode table. |
| 839 | also initialized the_insn struct. */ |
| 840 | if ((insn = (struct machine_opcode *) hash_find (op_hash, str)) == NULL) |
| 841 | { |
| 842 | /* Handle the ret and return macro here. */ |
| 843 | if ((strcmp (str, "ret") == 0) || (strcmp (str, "return") == 0)) |
| 844 | { |
| 845 | memset (&the_insn, '\0', sizeof (the_insn)); |
| 846 | the_insn.reloc = NO_RELOC; |
| 847 | the_insn.pcrel = 0; |
| 848 | the_insn.opcode = |
| 849 | (unsigned long)(JROP | 0x03e00000); /* 0x03e00000 = r31 << 21 */ |
| 850 | } |
| 851 | else |
| 852 | as_bad (_("Unknown opcode `%s'."), str); |
| 853 | |
| 854 | return; |
| 855 | } |
| 856 | |
| 857 | argsStart = s; |
| 858 | opcode = insn->opcode; |
| 859 | memset (&the_insn, '\0', sizeof (the_insn)); |
| 860 | the_insn.reloc = NO_RELOC; |
| 861 | the_insn.pcrel = 0; |
| 862 | |
| 863 | /* Set the sip reloc HI16 flag. */ |
| 864 | if (!set_dlx_skip_hi16_flag (1)) |
| 865 | as_bad (_("Can not set dlx_skip_hi16_flag")); |
| 866 | |
| 867 | /* Fix the operand string if it is one of load store instructions. */ |
| 868 | s = fix_ld_st_operand (opcode, s); |
| 869 | |
| 870 | /* Build the opcode, checking as we go to make sure that the |
| 871 | operands match. |
| 872 | If an operand matches, we modify the_insn or opcode appropriately, |
| 873 | and do a "continue". If an operand fails to match, we "break". */ |
| 874 | if (insn->args[0] != '\0' && insn->args[0] != 'N') |
| 875 | { |
| 876 | /* Prime the pump. */ |
| 877 | if (*s == '\0') |
| 878 | { |
| 879 | as_bad (_("Missing arguments for opcode <%s>."), str); |
| 880 | return; |
| 881 | } |
| 882 | else |
| 883 | s = parse_operand (s, operand); |
| 884 | } |
| 885 | else if (insn->args[0] == 'N') |
| 886 | { |
| 887 | /* Clean up the insn and done! */ |
| 888 | the_insn.opcode = opcode; |
| 889 | return; |
| 890 | } |
| 891 | |
| 892 | /* Parse through the args (this is from opcode table), *s point to |
| 893 | the current character of the instruction stream. */ |
| 894 | for (args = insn->args;; ++args) |
| 895 | { |
| 896 | switch (*args) |
| 897 | { |
| 898 | /* End of Line. */ |
| 899 | case '\0': |
| 900 | /* End of args. */ |
| 901 | if (*s == '\0') |
| 902 | { |
| 903 | /* We are truly done. */ |
| 904 | the_insn.opcode = opcode; |
| 905 | /* Clean up the HI and LO mark. */ |
| 906 | the_insn.HI = 0; |
| 907 | the_insn.LO = 0; |
| 908 | return; |
| 909 | } |
| 910 | |
| 911 | the_insn.HI = 0; |
| 912 | the_insn.LO = 0; |
| 913 | as_bad (_("Too many operands: %s"), s); |
| 914 | break; |
| 915 | |
| 916 | /* ',' Args separator */ |
| 917 | case ',': |
| 918 | /* Must match a comma. */ |
| 919 | if (*s++ == ',') |
| 920 | { |
| 921 | /* Parse next operand. */ |
| 922 | s = parse_operand (s, operand); |
| 923 | continue; |
| 924 | } |
| 925 | break; |
| 926 | |
| 927 | /* It can be a 'a' register or 'i' operand. */ |
| 928 | case 'P': |
| 929 | /* Macro move operand/reg. */ |
| 930 | if (operand->X_op == O_register) |
| 931 | { |
| 932 | /* Its a register. */ |
| 933 | reg_shift = 21; |
| 934 | goto general_reg; |
| 935 | } |
| 936 | |
| 937 | /* The immediate 16 bits literal, bit 0-15. */ |
| 938 | case 'i': |
| 939 | /* offset, unsigned. */ |
| 940 | case 'I': |
| 941 | /* offset, signed. */ |
| 942 | if (operand->X_op == O_constant) |
| 943 | { |
| 944 | if (the_insn.HI) |
| 945 | operand->X_add_number >>= 16; |
| 946 | |
| 947 | opcode |= operand->X_add_number & 0xFFFF; |
| 948 | |
| 949 | if (the_insn.HI && the_insn.LO) |
| 950 | as_bad (_("Both the_insn.HI and the_insn.LO are set : %s"), s); |
| 951 | else |
| 952 | { |
| 953 | the_insn.HI = 0; |
| 954 | the_insn.LO = 0; |
| 955 | } |
| 956 | continue; |
| 957 | } |
| 958 | |
| 959 | the_insn.reloc = (the_insn.HI) ? RELOC_DLX_HI16 : RELOC_DLX_16; |
| 960 | the_insn.reloc_offset = 2; |
| 961 | the_insn.size = 2; |
| 962 | the_insn.pcrel = 0; |
| 963 | the_insn.exp = * operand; |
| 964 | the_insn.HI = 0; |
| 965 | the_insn.LO = 0; |
| 966 | continue; |
| 967 | |
| 968 | case 'd': |
| 969 | /* offset, signed. */ |
| 970 | if (operand->X_op == O_constant) |
| 971 | { |
| 972 | opcode |= operand->X_add_number & 0xFFFF; |
| 973 | continue; |
| 974 | } |
| 975 | the_insn.reloc = RELOC_DLX_REL16; |
| 976 | the_insn.reloc_offset = 0; /* BIG-ENDIAN Byte 3 of insn. */ |
| 977 | the_insn.size = 4; |
| 978 | the_insn.pcrel = 1; |
| 979 | the_insn.exp = *operand; |
| 980 | continue; |
| 981 | |
| 982 | /* The immediate 26 bits literal, bit 0-25. */ |
| 983 | case 'D': |
| 984 | /* offset, signed. */ |
| 985 | if (operand->X_op == O_constant) |
| 986 | { |
| 987 | opcode |= operand->X_add_number & 0x3FFFFFF; |
| 988 | continue; |
| 989 | } |
| 990 | the_insn.reloc = RELOC_DLX_REL26; |
| 991 | the_insn.reloc_offset = 0; /* BIG-ENDIAN Byte 3 of insn. */ |
| 992 | the_insn.size = 4; |
| 993 | the_insn.pcrel = 1; |
| 994 | the_insn.exp = *operand; |
| 995 | continue; |
| 996 | |
| 997 | /* Type 'a' Register. */ |
| 998 | case 'a': |
| 999 | /* A general register at bits 21-25, rs1. */ |
| 1000 | know (operand->X_op != O_register); |
| 1001 | reg_shift = 21; |
| 1002 | goto general_reg; |
| 1003 | |
| 1004 | /* Type 'b' Register. */ |
| 1005 | case 'b': |
| 1006 | /* A general register at bits 16-20, rs2/rd. */ |
| 1007 | know (operand->X_op != O_register); |
| 1008 | reg_shift = 16; |
| 1009 | goto general_reg; |
| 1010 | |
| 1011 | /* Type 'c' Register. */ |
| 1012 | case 'c': |
| 1013 | /* A general register at bits 11-15, rd. */ |
| 1014 | know (operand->X_op != O_register); |
| 1015 | reg_shift = 11; |
| 1016 | |
| 1017 | general_reg: |
| 1018 | know (operand->X_add_symbol == 0); |
| 1019 | know (operand->X_op_symbol == 0); |
| 1020 | reg = operand->X_add_number; |
| 1021 | if (reg & 0xffffffe0) |
| 1022 | as_fatal (_("failed regnum sanity check.")); |
| 1023 | else |
| 1024 | /* Got the register, now figure out where it goes in the opcode. */ |
| 1025 | opcode |= reg << reg_shift; |
| 1026 | |
| 1027 | switch (*args) |
| 1028 | { |
| 1029 | case 'a': |
| 1030 | case 'b': |
| 1031 | case 'c': |
| 1032 | case 'P': |
| 1033 | continue; |
| 1034 | } |
| 1035 | as_fatal (_("failed general register sanity check.")); |
| 1036 | break; |
| 1037 | |
| 1038 | default: |
| 1039 | BAD_CASE (*args); |
| 1040 | } |
| 1041 | |
| 1042 | /* Types or values of args don't match. */ |
| 1043 | as_bad ("Invalid operands"); |
| 1044 | return; |
| 1045 | } |
| 1046 | } |
| 1047 | |
| 1048 | /* This is identical to the md_atof in m68k.c. I think this is right, |
| 1049 | but I'm not sure. |
| 1050 | |
| 1051 | Turn a string in input_line_pointer into a floating point constant |
| 1052 | of type TYPE, and store the appropriate bytes in *LITP. The number |
| 1053 | of LITTLENUMS emitted is stored in *SIZEP. An error message is |
| 1054 | returned, or NULL on OK. */ |
| 1055 | /* Dlx will not use it anyway, so I just leave it here for now. */ |
| 1056 | |
| 1057 | /* Equal to MAX_PRECISION in atof-ieee.c. */ |
| 1058 | #define MAX_LITTLENUMS 6 |
| 1059 | |
| 1060 | char * |
| 1061 | md_atof (type, litP, sizeP) |
| 1062 | char type; |
| 1063 | char *litP; |
| 1064 | int *sizeP; |
| 1065 | { |
| 1066 | int prec; |
| 1067 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; |
| 1068 | LITTLENUM_TYPE *wordP; |
| 1069 | char *t; |
| 1070 | |
| 1071 | switch (type) |
| 1072 | { |
| 1073 | case 'f': |
| 1074 | case 'F': |
| 1075 | case 's': |
| 1076 | case 'S': |
| 1077 | prec = 2; |
| 1078 | break; |
| 1079 | |
| 1080 | case 'd': |
| 1081 | case 'D': |
| 1082 | case 'r': |
| 1083 | case 'R': |
| 1084 | prec = 4; |
| 1085 | break; |
| 1086 | |
| 1087 | case 'x': |
| 1088 | case 'X': |
| 1089 | prec = 6; |
| 1090 | break; |
| 1091 | |
| 1092 | case 'p': |
| 1093 | case 'P': |
| 1094 | prec = 6; |
| 1095 | break; |
| 1096 | |
| 1097 | default: |
| 1098 | *sizeP = 0; |
| 1099 | return "Bad call to MD_ATOF()"; |
| 1100 | } |
| 1101 | |
| 1102 | t = atof_ieee (input_line_pointer, type, words); |
| 1103 | if (t) |
| 1104 | input_line_pointer = t; |
| 1105 | |
| 1106 | *sizeP = prec * sizeof (LITTLENUM_TYPE); |
| 1107 | |
| 1108 | for (wordP = words; prec--;) |
| 1109 | { |
| 1110 | md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE)); |
| 1111 | litP += sizeof (LITTLENUM_TYPE); |
| 1112 | } |
| 1113 | |
| 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | /* Write out big-endian. */ |
| 1118 | void |
| 1119 | md_number_to_chars (buf, val, n) |
| 1120 | char *buf; |
| 1121 | valueT val; |
| 1122 | int n; |
| 1123 | { |
| 1124 | number_to_chars_bigendian (buf, val, n); |
| 1125 | } |
| 1126 | |
| 1127 | /* md_chars_to_number: convert from target byte order to host byte order. */ |
| 1128 | |
| 1129 | int |
| 1130 | md_chars_to_number (val, n) |
| 1131 | unsigned char *val; /* Value in target byte order. */ |
| 1132 | int n; /* Number of bytes in the input. */ |
| 1133 | { |
| 1134 | int retval; |
| 1135 | |
| 1136 | for (retval = 0; n--;) |
| 1137 | { |
| 1138 | retval <<= 8; |
| 1139 | retval |= val[n]; |
| 1140 | } |
| 1141 | |
| 1142 | return retval; |
| 1143 | } |
| 1144 | |
| 1145 | bfd_boolean |
| 1146 | md_dlx_fix_adjustable (fixP) |
| 1147 | fixS *fixP; |
| 1148 | { |
| 1149 | /* We need the symbol name for the VTABLE entries. */ |
| 1150 | return (fixP->fx_r_type != BFD_RELOC_VTABLE_INHERIT |
| 1151 | && fixP->fx_r_type != BFD_RELOC_VTABLE_ENTRY); |
| 1152 | } |
| 1153 | |
| 1154 | void |
| 1155 | md_apply_fix3 (fixP, valP, seg) |
| 1156 | fixS *fixP; |
| 1157 | valueT *valP; |
| 1158 | segT seg ATTRIBUTE_UNUSED; |
| 1159 | { |
| 1160 | long val = *valP; |
| 1161 | char *place = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 1162 | |
| 1163 | know (fixP->fx_size == 4); |
| 1164 | know (fixP->fx_r_type < NO_RELOC); |
| 1165 | |
| 1166 | switch (fixP->fx_r_type) |
| 1167 | { |
| 1168 | case RELOC_DLX_REL16: |
| 1169 | if (fixP->fx_bit_fixP != (bit_fixS *) NULL) |
| 1170 | { |
| 1171 | val = (val & 0x0000FFFF) | fixP->fx_bit_fixP->fx_bit_base; |
| 1172 | free (fixP->fx_bit_fixP); |
| 1173 | fixP->fx_bit_fixP = (bit_fixS *) NULL; |
| 1174 | } |
| 1175 | #ifdef DEBUG |
| 1176 | else |
| 1177 | know ((fixP->fx_bit_fixP != (bit_fixS *) NULL)); |
| 1178 | #endif |
| 1179 | break; |
| 1180 | |
| 1181 | case RELOC_DLX_HI16: |
| 1182 | if (fixP->fx_bit_fixP != (bit_fixS *) NULL) |
| 1183 | { |
| 1184 | val = (val >> 16) | fixP->fx_bit_fixP->fx_bit_base; |
| 1185 | free (fixP->fx_bit_fixP); |
| 1186 | fixP->fx_bit_fixP = (bit_fixS *)NULL; |
| 1187 | } |
| 1188 | #ifdef DEBUG |
| 1189 | else |
| 1190 | know ((fixP->fx_bit_fixP != (bit_fixS *) NULL)); |
| 1191 | #endif |
| 1192 | break; |
| 1193 | |
| 1194 | case RELOC_DLX_REL26: |
| 1195 | if (fixP->fx_bit_fixP != (bit_fixS *) NULL) |
| 1196 | { |
| 1197 | val = (val & 0x03FFFFFF) | fixP->fx_bit_fixP->fx_bit_base; |
| 1198 | free (fixP->fx_bit_fixP); |
| 1199 | fixP->fx_bit_fixP = (bit_fixS *) NULL; |
| 1200 | } |
| 1201 | #ifdef DEBUG |
| 1202 | else |
| 1203 | know ((fixP->fx_bit_fixP != (bit_fixS *) NULL)); |
| 1204 | #endif |
| 1205 | break; |
| 1206 | |
| 1207 | case BFD_RELOC_VTABLE_INHERIT: |
| 1208 | /* This borrowed from tc-ppc.c on a whim. */ |
| 1209 | fixP->fx_done = 0; |
| 1210 | if (fixP->fx_addsy |
| 1211 | && !S_IS_DEFINED (fixP->fx_addsy) |
| 1212 | && !S_IS_WEAK (fixP->fx_addsy)) |
| 1213 | S_SET_WEAK (fixP->fx_addsy); |
| 1214 | return; |
| 1215 | |
| 1216 | case BFD_RELOC_VTABLE_ENTRY: |
| 1217 | fixP->fx_done = 0; |
| 1218 | return; |
| 1219 | |
| 1220 | default: |
| 1221 | break; |
| 1222 | } |
| 1223 | |
| 1224 | number_to_chars_bigendian (place, val, fixP->fx_size); |
| 1225 | if (fixP->fx_addsy == NULL) |
| 1226 | fixP->fx_done = 1; |
| 1227 | return; |
| 1228 | } |
| 1229 | |
| 1230 | const char *md_shortopts = ""; |
| 1231 | |
| 1232 | struct option md_longopts[] = |
| 1233 | { |
| 1234 | {NULL, no_argument, NULL, 0} |
| 1235 | }; |
| 1236 | |
| 1237 | size_t md_longopts_size = sizeof (md_longopts); |
| 1238 | |
| 1239 | int |
| 1240 | md_parse_option (c, arg) |
| 1241 | int c ATTRIBUTE_UNUSED; |
| 1242 | char *arg ATTRIBUTE_UNUSED; |
| 1243 | { |
| 1244 | return 0; |
| 1245 | } |
| 1246 | |
| 1247 | void |
| 1248 | md_show_usage (stream) |
| 1249 | FILE *stream ATTRIBUTE_UNUSED; |
| 1250 | { |
| 1251 | return; |
| 1252 | } |
| 1253 | |
| 1254 | /* This is called when a line is unrecognized. */ |
| 1255 | |
| 1256 | int |
| 1257 | dlx_unrecognized_line (c) |
| 1258 | int c; |
| 1259 | { |
| 1260 | int lab; |
| 1261 | char *s; |
| 1262 | |
| 1263 | if (c != '$' || ! ISDIGIT ((unsigned char) input_line_pointer[0])) |
| 1264 | return 0; |
| 1265 | |
| 1266 | s = input_line_pointer; |
| 1267 | |
| 1268 | lab = 0; |
| 1269 | while (ISDIGIT ((unsigned char) *s)) |
| 1270 | { |
| 1271 | lab = lab * 10 + *s - '0'; |
| 1272 | ++s; |
| 1273 | } |
| 1274 | |
| 1275 | if (*s != ':') |
| 1276 | { |
| 1277 | /* Not a label definition. */ |
| 1278 | return 0; |
| 1279 | } |
| 1280 | |
| 1281 | if (dollar_label_defined (lab)) |
| 1282 | { |
| 1283 | as_bad (_("label \"$%d\" redefined"), lab); |
| 1284 | return 0; |
| 1285 | } |
| 1286 | |
| 1287 | define_dollar_label (lab); |
| 1288 | colon (dollar_label_name (lab, 0)); |
| 1289 | input_line_pointer = s + 1; |
| 1290 | |
| 1291 | return 1; |
| 1292 | } |
| 1293 | |
| 1294 | /* Default the values of symbols known that should be "predefined". We |
| 1295 | don't bother to predefine them unless you actually use one, since there |
| 1296 | are a lot of them. */ |
| 1297 | |
| 1298 | symbolS * |
| 1299 | md_undefined_symbol (name) |
| 1300 | char *name ATTRIBUTE_UNUSED; |
| 1301 | { |
| 1302 | return NULL; |
| 1303 | } |
| 1304 | |
| 1305 | |
| 1306 | /* Parse an operand that is machine-specific, the function was called |
| 1307 | in expr.c by operand() function, when everything failed bdfore it |
| 1308 | call a quit. */ |
| 1309 | |
| 1310 | void |
| 1311 | md_operand (expressionP) |
| 1312 | expressionS* expressionP; |
| 1313 | { |
| 1314 | /* Check for the #number representation */ |
| 1315 | if (input_line_pointer[0] == '#' && |
| 1316 | ISDIGIT ((unsigned char) input_line_pointer[1])) |
| 1317 | { |
| 1318 | /* We have a numeric number expression. No biggy. */ |
| 1319 | input_line_pointer += 1; /* Skip # */ |
| 1320 | |
| 1321 | (void) expression (expressionP); |
| 1322 | |
| 1323 | if (expressionP->X_op != O_constant) |
| 1324 | as_bad (_("Invalid expression after # number\n")); |
| 1325 | } |
| 1326 | |
| 1327 | return; |
| 1328 | #if 0 |
| 1329 | else if (input_line_pointer[0] == '$' |
| 1330 | && ISDIGIT ((unsigned char) input_line_pointer[1])) |
| 1331 | { |
| 1332 | long lab; |
| 1333 | char *name; |
| 1334 | symbolS *sym; |
| 1335 | |
| 1336 | /* This is a local label. */ |
| 1337 | ++input_line_pointer; |
| 1338 | lab = (long) get_absolute_expression (); |
| 1339 | if (dollar_label_defined (lab)) |
| 1340 | { |
| 1341 | name = dollar_label_name (lab, 0); |
| 1342 | sym = symbol_find (name); |
| 1343 | } |
| 1344 | else |
| 1345 | { |
| 1346 | name = dollar_label_name (lab, 1); |
| 1347 | sym = symbol_find_or_make (name); |
| 1348 | } |
| 1349 | |
| 1350 | expressionP->X_op = O_symbol; |
| 1351 | expressionP->X_add_symbol = sym; |
| 1352 | expressionP->X_add_number = 0; |
| 1353 | } |
| 1354 | #endif |
| 1355 | } |
| 1356 | |
| 1357 | /* Round up a section size to the appropriate boundary. */ |
| 1358 | |
| 1359 | valueT |
| 1360 | md_section_align (segment, size) |
| 1361 | segT segment ATTRIBUTE_UNUSED; |
| 1362 | valueT size; |
| 1363 | { |
| 1364 | /* Byte alignment is fine. */ |
| 1365 | return size; |
| 1366 | } |
| 1367 | |
| 1368 | /* Exactly what point is a PC-relative offset relative TO? |
| 1369 | On the 29000, they're relative to the address of the instruction, |
| 1370 | which we have set up as the address of the fixup too. */ |
| 1371 | |
| 1372 | long |
| 1373 | md_pcrel_from (fixP) |
| 1374 | fixS* fixP; |
| 1375 | { |
| 1376 | return 4 + fixP->fx_where + fixP->fx_frag->fr_address; |
| 1377 | } |
| 1378 | |
| 1379 | /* From cgen.c: */ |
| 1380 | |
| 1381 | #if 0 |
| 1382 | static short |
| 1383 | tc_bfd_fix2rtype (fixP) |
| 1384 | fixS* fixP; |
| 1385 | { |
| 1386 | #if 0 |
| 1387 | if (fixP->fx_bsr) |
| 1388 | abort (); |
| 1389 | #endif |
| 1390 | |
| 1391 | if (fixP->fx_pcrel == 0 && fixP->fx_size == 4) |
| 1392 | return BFD_RELOC_32; |
| 1393 | |
| 1394 | if (fixP->fx_pcrel != 0 && fixP->fx_size == 4) |
| 1395 | return BFD_RELOC_26_PCREL; |
| 1396 | |
| 1397 | abort (); |
| 1398 | |
| 1399 | return 0; |
| 1400 | } |
| 1401 | #endif |
| 1402 | |
| 1403 | /* Translate internal representation of relocation info to BFD target |
| 1404 | format. |
| 1405 | FIXME: To what extent can we get all relevant targets to use this? |
| 1406 | The above FIXME is from a29k, but I think it is also needed here. */ |
| 1407 | |
| 1408 | arelent * |
| 1409 | tc_gen_reloc (section, fixP) |
| 1410 | asection *section ATTRIBUTE_UNUSED; |
| 1411 | fixS *fixP; |
| 1412 | { |
| 1413 | arelent * reloc; |
| 1414 | |
| 1415 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
| 1416 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); |
| 1417 | |
| 1418 | if (reloc->howto == (reloc_howto_type *) NULL) |
| 1419 | { |
| 1420 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 1421 | "internal error: can't export reloc type %d (`%s')", |
| 1422 | fixP->fx_r_type, |
| 1423 | bfd_get_reloc_code_name (fixP->fx_r_type)); |
| 1424 | return NULL; |
| 1425 | } |
| 1426 | |
| 1427 | assert (!fixP->fx_pcrel == !reloc->howto->pc_relative); |
| 1428 | |
| 1429 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 1430 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy); |
| 1431 | reloc->address = fixP->fx_frag->fr_address + fixP->fx_where; |
| 1432 | |
| 1433 | if (fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 1434 | reloc->address = fixP->fx_offset; |
| 1435 | reloc->addend = 0; |
| 1436 | |
| 1437 | return reloc; |
| 1438 | } |
| 1439 | |
| 1440 | extern void pop_insert PARAMS ((const pseudo_typeS *)); |
| 1441 | |
| 1442 | void |
| 1443 | dlx_pop_insert () |
| 1444 | { |
| 1445 | pop_insert (dlx_pseudo_table); |
| 1446 | return ; |
| 1447 | } |