| 1 | /* tc-v850.c -- Assembler code for the NEC V850 |
| 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/v850.h" |
| 27 | #include "dwarf2dbg.h" |
| 28 | |
| 29 | /* Sign-extend a 16-bit number. */ |
| 30 | #define SEXT16(x) ((((x) & 0xffff) ^ (~0x7fff)) + 0x8000) |
| 31 | |
| 32 | /* Temporarily holds the reloc in a cons expression. */ |
| 33 | static bfd_reloc_code_real_type hold_cons_reloc = BFD_RELOC_UNUSED; |
| 34 | |
| 35 | /* Set to TRUE if we want to be pedantic about signed overflows. */ |
| 36 | static bfd_boolean warn_signed_overflows = FALSE; |
| 37 | static bfd_boolean warn_unsigned_overflows = FALSE; |
| 38 | |
| 39 | /* Indicates the target BFD machine number. */ |
| 40 | static int machine = -1; |
| 41 | |
| 42 | /* Indicates the target processor(s) for the assemble. */ |
| 43 | static int processor_mask = -1; |
| 44 | \f |
| 45 | /* Structure to hold information about predefined registers. */ |
| 46 | struct reg_name { |
| 47 | const char *name; |
| 48 | int value; |
| 49 | }; |
| 50 | |
| 51 | /* Generic assembler global variables which must be defined by all |
| 52 | targets. */ |
| 53 | |
| 54 | /* Characters which always start a comment. */ |
| 55 | const char comment_chars[] = "#"; |
| 56 | |
| 57 | /* Characters which start a comment at the beginning of a line. */ |
| 58 | const char line_comment_chars[] = ";#"; |
| 59 | |
| 60 | /* Characters which may be used to separate multiple commands on a |
| 61 | single line. */ |
| 62 | const char line_separator_chars[] = ";"; |
| 63 | |
| 64 | /* Characters which are used to indicate an exponent in a floating |
| 65 | point number. */ |
| 66 | const char EXP_CHARS[] = "eE"; |
| 67 | |
| 68 | /* Characters which mean that a number is a floating point constant, |
| 69 | as in 0d1.0. */ |
| 70 | const char FLT_CHARS[] = "dD"; |
| 71 | \f |
| 72 | const relax_typeS md_relax_table[] = { |
| 73 | /* Conditional branches. */ |
| 74 | {0xff, -0x100, 2, 1}, |
| 75 | {0x1fffff, -0x200000, 6, 0}, |
| 76 | /* Unconditional branches. */ |
| 77 | {0xff, -0x100, 2, 3}, |
| 78 | {0x1fffff, -0x200000, 4, 0}, |
| 79 | }; |
| 80 | |
| 81 | static int v850_relax = 0; |
| 82 | |
| 83 | /* Fixups. */ |
| 84 | #define MAX_INSN_FIXUPS (5) |
| 85 | struct v850_fixup { |
| 86 | expressionS exp; |
| 87 | int opindex; |
| 88 | bfd_reloc_code_real_type reloc; |
| 89 | }; |
| 90 | |
| 91 | struct v850_fixup fixups[MAX_INSN_FIXUPS]; |
| 92 | static int fc; |
| 93 | |
| 94 | struct v850_seg_entry |
| 95 | { |
| 96 | segT s; |
| 97 | const char *name; |
| 98 | flagword flags; |
| 99 | }; |
| 100 | |
| 101 | struct v850_seg_entry v850_seg_table[] = |
| 102 | { |
| 103 | { NULL, ".sdata", |
| 104 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 105 | | SEC_SMALL_DATA }, |
| 106 | { NULL, ".tdata", |
| 107 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS }, |
| 108 | { NULL, ".zdata", |
| 109 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS }, |
| 110 | { NULL, ".sbss", |
| 111 | SEC_ALLOC | SEC_SMALL_DATA }, |
| 112 | { NULL, ".tbss", |
| 113 | SEC_ALLOC }, |
| 114 | { NULL, ".zbss", |
| 115 | SEC_ALLOC}, |
| 116 | { NULL, ".rosdata", |
| 117 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_DATA |
| 118 | | SEC_HAS_CONTENTS | SEC_SMALL_DATA }, |
| 119 | { NULL, ".rozdata", |
| 120 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_DATA |
| 121 | | SEC_HAS_CONTENTS }, |
| 122 | { NULL, ".scommon", |
| 123 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 124 | | SEC_SMALL_DATA | SEC_IS_COMMON }, |
| 125 | { NULL, ".tcommon", |
| 126 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 127 | | SEC_IS_COMMON }, |
| 128 | { NULL, ".zcommon", |
| 129 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 130 | | SEC_IS_COMMON }, |
| 131 | { NULL, ".call_table_data", |
| 132 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS }, |
| 133 | { NULL, ".call_table_text", |
| 134 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_CODE |
| 135 | | SEC_HAS_CONTENTS}, |
| 136 | { NULL, ".bss", |
| 137 | SEC_ALLOC } |
| 138 | }; |
| 139 | |
| 140 | #define SDATA_SECTION 0 |
| 141 | #define TDATA_SECTION 1 |
| 142 | #define ZDATA_SECTION 2 |
| 143 | #define SBSS_SECTION 3 |
| 144 | #define TBSS_SECTION 4 |
| 145 | #define ZBSS_SECTION 5 |
| 146 | #define ROSDATA_SECTION 6 |
| 147 | #define ROZDATA_SECTION 7 |
| 148 | #define SCOMMON_SECTION 8 |
| 149 | #define TCOMMON_SECTION 9 |
| 150 | #define ZCOMMON_SECTION 10 |
| 151 | #define CALL_TABLE_DATA_SECTION 11 |
| 152 | #define CALL_TABLE_TEXT_SECTION 12 |
| 153 | #define BSS_SECTION 13 |
| 154 | |
| 155 | static void do_v850_seg PARAMS ((int, subsegT)); |
| 156 | |
| 157 | static void |
| 158 | do_v850_seg (i, sub) |
| 159 | int i; |
| 160 | subsegT sub; |
| 161 | { |
| 162 | struct v850_seg_entry *seg = v850_seg_table + i; |
| 163 | |
| 164 | obj_elf_section_change_hook (); |
| 165 | if (seg->s != NULL) |
| 166 | { |
| 167 | subseg_set (seg->s, sub); |
| 168 | } |
| 169 | else |
| 170 | { |
| 171 | seg->s = subseg_new (seg->name, sub); |
| 172 | bfd_set_section_flags (stdoutput, seg->s, seg->flags); |
| 173 | if ((seg->flags & SEC_LOAD) == 0) |
| 174 | seg_info (seg->s)->bss = 1; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | static void v850_seg PARAMS ((int i)); |
| 179 | |
| 180 | static void |
| 181 | v850_seg (i) |
| 182 | int i; |
| 183 | { |
| 184 | subsegT sub = get_absolute_expression (); |
| 185 | |
| 186 | do_v850_seg (i, sub); |
| 187 | demand_empty_rest_of_line (); |
| 188 | } |
| 189 | |
| 190 | static void v850_offset PARAMS ((int)); |
| 191 | |
| 192 | static void |
| 193 | v850_offset (ignore) |
| 194 | int ignore ATTRIBUTE_UNUSED; |
| 195 | { |
| 196 | char *pfrag; |
| 197 | int temp = get_absolute_expression (); |
| 198 | |
| 199 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, (symbolS *)0, |
| 200 | (offsetT) temp, (char *) 0); |
| 201 | *pfrag = 0; |
| 202 | |
| 203 | demand_empty_rest_of_line (); |
| 204 | } |
| 205 | |
| 206 | /* Copied from obj_elf_common() in gas/config/obj-elf.c. */ |
| 207 | |
| 208 | static void v850_comm PARAMS ((int)); |
| 209 | |
| 210 | static void |
| 211 | v850_comm (area) |
| 212 | int area; |
| 213 | { |
| 214 | char *name; |
| 215 | char c; |
| 216 | char *p; |
| 217 | int temp; |
| 218 | unsigned int size; |
| 219 | symbolS *symbolP; |
| 220 | int have_align; |
| 221 | |
| 222 | name = input_line_pointer; |
| 223 | c = get_symbol_end (); |
| 224 | |
| 225 | /* Just after name is now '\0'. */ |
| 226 | p = input_line_pointer; |
| 227 | *p = c; |
| 228 | |
| 229 | SKIP_WHITESPACE (); |
| 230 | |
| 231 | if (*input_line_pointer != ',') |
| 232 | { |
| 233 | as_bad (_("Expected comma after symbol-name")); |
| 234 | ignore_rest_of_line (); |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | /* Skip ','. */ |
| 239 | input_line_pointer++; |
| 240 | |
| 241 | if ((temp = get_absolute_expression ()) < 0) |
| 242 | { |
| 243 | /* xgettext:c-format */ |
| 244 | as_bad (_(".COMMon length (%d.) < 0! Ignored."), temp); |
| 245 | ignore_rest_of_line (); |
| 246 | return; |
| 247 | } |
| 248 | |
| 249 | size = temp; |
| 250 | *p = 0; |
| 251 | symbolP = symbol_find_or_make (name); |
| 252 | *p = c; |
| 253 | |
| 254 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) |
| 255 | { |
| 256 | as_bad (_("Ignoring attempt to re-define symbol")); |
| 257 | ignore_rest_of_line (); |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | if (S_GET_VALUE (symbolP) != 0) |
| 262 | { |
| 263 | if (S_GET_VALUE (symbolP) != size) |
| 264 | { |
| 265 | /* xgettext:c-format */ |
| 266 | as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."), |
| 267 | S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | know (symbol_get_frag (symbolP) == &zero_address_frag); |
| 272 | |
| 273 | if (*input_line_pointer != ',') |
| 274 | have_align = 0; |
| 275 | else |
| 276 | { |
| 277 | have_align = 1; |
| 278 | input_line_pointer++; |
| 279 | SKIP_WHITESPACE (); |
| 280 | } |
| 281 | |
| 282 | if (! have_align || *input_line_pointer != '"') |
| 283 | { |
| 284 | if (! have_align) |
| 285 | temp = 0; |
| 286 | else |
| 287 | { |
| 288 | temp = get_absolute_expression (); |
| 289 | |
| 290 | if (temp < 0) |
| 291 | { |
| 292 | temp = 0; |
| 293 | as_warn (_("Common alignment negative; 0 assumed")); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | if (symbol_get_obj (symbolP)->local) |
| 298 | { |
| 299 | segT old_sec; |
| 300 | int old_subsec; |
| 301 | char *pfrag; |
| 302 | int align; |
| 303 | flagword applicable; |
| 304 | |
| 305 | old_sec = now_seg; |
| 306 | old_subsec = now_subseg; |
| 307 | |
| 308 | applicable = bfd_applicable_section_flags (stdoutput); |
| 309 | |
| 310 | applicable &= SEC_ALLOC; |
| 311 | |
| 312 | switch (area) |
| 313 | { |
| 314 | case SCOMMON_SECTION: |
| 315 | do_v850_seg (SBSS_SECTION, 0); |
| 316 | break; |
| 317 | |
| 318 | case ZCOMMON_SECTION: |
| 319 | do_v850_seg (ZBSS_SECTION, 0); |
| 320 | break; |
| 321 | |
| 322 | case TCOMMON_SECTION: |
| 323 | do_v850_seg (TBSS_SECTION, 0); |
| 324 | break; |
| 325 | } |
| 326 | |
| 327 | if (temp) |
| 328 | { |
| 329 | /* Convert to a power of 2 alignment. */ |
| 330 | for (align = 0; (temp & 1) == 0; temp >>= 1, ++align) |
| 331 | ; |
| 332 | |
| 333 | if (temp != 1) |
| 334 | { |
| 335 | as_bad (_("Common alignment not a power of 2")); |
| 336 | ignore_rest_of_line (); |
| 337 | return; |
| 338 | } |
| 339 | } |
| 340 | else |
| 341 | align = 0; |
| 342 | |
| 343 | record_alignment (now_seg, align); |
| 344 | |
| 345 | if (align) |
| 346 | frag_align (align, 0, 0); |
| 347 | |
| 348 | switch (area) |
| 349 | { |
| 350 | case SCOMMON_SECTION: |
| 351 | if (S_GET_SEGMENT (symbolP) == v850_seg_table[SBSS_SECTION].s) |
| 352 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 353 | break; |
| 354 | |
| 355 | case ZCOMMON_SECTION: |
| 356 | if (S_GET_SEGMENT (symbolP) == v850_seg_table[ZBSS_SECTION].s) |
| 357 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 358 | break; |
| 359 | |
| 360 | case TCOMMON_SECTION: |
| 361 | if (S_GET_SEGMENT (symbolP) == v850_seg_table[TBSS_SECTION].s) |
| 362 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 363 | break; |
| 364 | |
| 365 | default: |
| 366 | abort (); |
| 367 | } |
| 368 | |
| 369 | symbol_set_frag (symbolP, frag_now); |
| 370 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, |
| 371 | (offsetT) size, (char *) 0); |
| 372 | *pfrag = 0; |
| 373 | S_SET_SIZE (symbolP, size); |
| 374 | |
| 375 | switch (area) |
| 376 | { |
| 377 | case SCOMMON_SECTION: |
| 378 | S_SET_SEGMENT (symbolP, v850_seg_table[SBSS_SECTION].s); |
| 379 | break; |
| 380 | |
| 381 | case ZCOMMON_SECTION: |
| 382 | S_SET_SEGMENT (symbolP, v850_seg_table[ZBSS_SECTION].s); |
| 383 | break; |
| 384 | |
| 385 | case TCOMMON_SECTION: |
| 386 | S_SET_SEGMENT (symbolP, v850_seg_table[TBSS_SECTION].s); |
| 387 | break; |
| 388 | |
| 389 | default: |
| 390 | abort (); |
| 391 | } |
| 392 | |
| 393 | S_CLEAR_EXTERNAL (symbolP); |
| 394 | obj_elf_section_change_hook (); |
| 395 | subseg_set (old_sec, old_subsec); |
| 396 | } |
| 397 | else |
| 398 | { |
| 399 | segT old_sec; |
| 400 | int old_subsec; |
| 401 | |
| 402 | allocate_common: |
| 403 | old_sec = now_seg; |
| 404 | old_subsec = now_subseg; |
| 405 | |
| 406 | S_SET_VALUE (symbolP, (valueT) size); |
| 407 | S_SET_ALIGN (symbolP, temp); |
| 408 | S_SET_EXTERNAL (symbolP); |
| 409 | |
| 410 | switch (area) |
| 411 | { |
| 412 | case SCOMMON_SECTION: |
| 413 | case ZCOMMON_SECTION: |
| 414 | case TCOMMON_SECTION: |
| 415 | do_v850_seg (area, 0); |
| 416 | S_SET_SEGMENT (symbolP, v850_seg_table[area].s); |
| 417 | break; |
| 418 | |
| 419 | default: |
| 420 | abort (); |
| 421 | } |
| 422 | |
| 423 | obj_elf_section_change_hook (); |
| 424 | subseg_set (old_sec, old_subsec); |
| 425 | } |
| 426 | } |
| 427 | else |
| 428 | { |
| 429 | input_line_pointer++; |
| 430 | |
| 431 | /* @@ Some use the dot, some don't. Can we get some consistency?? */ |
| 432 | if (*input_line_pointer == '.') |
| 433 | input_line_pointer++; |
| 434 | |
| 435 | /* @@ Some say data, some say bss. */ |
| 436 | if (strncmp (input_line_pointer, "bss\"", 4) |
| 437 | && strncmp (input_line_pointer, "data\"", 5)) |
| 438 | { |
| 439 | while (*--input_line_pointer != '"') |
| 440 | ; |
| 441 | input_line_pointer--; |
| 442 | goto bad_common_segment; |
| 443 | } |
| 444 | while (*input_line_pointer++ != '"') |
| 445 | ; |
| 446 | goto allocate_common; |
| 447 | } |
| 448 | |
| 449 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
| 450 | |
| 451 | demand_empty_rest_of_line (); |
| 452 | return; |
| 453 | |
| 454 | { |
| 455 | bad_common_segment: |
| 456 | p = input_line_pointer; |
| 457 | while (*p && *p != '\n') |
| 458 | p++; |
| 459 | c = *p; |
| 460 | *p = '\0'; |
| 461 | as_bad (_("bad .common segment %s"), input_line_pointer + 1); |
| 462 | *p = c; |
| 463 | input_line_pointer = p; |
| 464 | ignore_rest_of_line (); |
| 465 | return; |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | static void set_machine PARAMS ((int)); |
| 470 | |
| 471 | static void |
| 472 | set_machine (number) |
| 473 | int number; |
| 474 | { |
| 475 | machine = number; |
| 476 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine); |
| 477 | |
| 478 | switch (machine) |
| 479 | { |
| 480 | case 0: processor_mask = PROCESSOR_V850; break; |
| 481 | case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break; |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | static void v850_longcode PARAMS ((int)); |
| 486 | |
| 487 | static void |
| 488 | v850_longcode (type) |
| 489 | int type; |
| 490 | { |
| 491 | expressionS ex; |
| 492 | |
| 493 | if (! v850_relax) |
| 494 | { |
| 495 | if (type == 1) |
| 496 | as_warn (".longcall pseudo-op seen when not relaxing"); |
| 497 | else |
| 498 | as_warn (".longjump pseudo-op seen when not relaxing"); |
| 499 | } |
| 500 | |
| 501 | expression (&ex); |
| 502 | |
| 503 | if (ex.X_op != O_symbol || ex.X_add_number != 0) |
| 504 | { |
| 505 | as_bad ("bad .longcall format"); |
| 506 | ignore_rest_of_line (); |
| 507 | |
| 508 | return; |
| 509 | } |
| 510 | |
| 511 | if (type == 1) |
| 512 | fix_new_exp (frag_now, frag_now_fix (), 4, & ex, 1, |
| 513 | BFD_RELOC_V850_LONGCALL); |
| 514 | else |
| 515 | fix_new_exp (frag_now, frag_now_fix (), 4, & ex, 1, |
| 516 | BFD_RELOC_V850_LONGJUMP); |
| 517 | |
| 518 | demand_empty_rest_of_line (); |
| 519 | } |
| 520 | |
| 521 | /* The target specific pseudo-ops which we support. */ |
| 522 | const pseudo_typeS md_pseudo_table[] = |
| 523 | { |
| 524 | { "sdata", v850_seg, SDATA_SECTION }, |
| 525 | { "tdata", v850_seg, TDATA_SECTION }, |
| 526 | { "zdata", v850_seg, ZDATA_SECTION }, |
| 527 | { "sbss", v850_seg, SBSS_SECTION }, |
| 528 | { "tbss", v850_seg, TBSS_SECTION }, |
| 529 | { "zbss", v850_seg, ZBSS_SECTION }, |
| 530 | { "rosdata", v850_seg, ROSDATA_SECTION }, |
| 531 | { "rozdata", v850_seg, ROZDATA_SECTION }, |
| 532 | { "bss", v850_seg, BSS_SECTION }, |
| 533 | { "offset", v850_offset, 0 }, |
| 534 | { "word", cons, 4 }, |
| 535 | { "zcomm", v850_comm, ZCOMMON_SECTION }, |
| 536 | { "scomm", v850_comm, SCOMMON_SECTION }, |
| 537 | { "tcomm", v850_comm, TCOMMON_SECTION }, |
| 538 | { "v850", set_machine, 0 }, |
| 539 | { "call_table_data", v850_seg, CALL_TABLE_DATA_SECTION }, |
| 540 | { "call_table_text", v850_seg, CALL_TABLE_TEXT_SECTION }, |
| 541 | { "v850e", set_machine, bfd_mach_v850e }, |
| 542 | { "file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0 }, |
| 543 | { "loc", dwarf2_directive_loc, 0 }, |
| 544 | { "longcall", v850_longcode, 1 }, |
| 545 | { "longjump", v850_longcode, 2 }, |
| 546 | { NULL, NULL, 0 } |
| 547 | }; |
| 548 | |
| 549 | /* Opcode hash table. */ |
| 550 | static struct hash_control *v850_hash; |
| 551 | |
| 552 | /* This table is sorted. Suitable for searching by a binary search. */ |
| 553 | static const struct reg_name pre_defined_registers[] = |
| 554 | { |
| 555 | { "ep", 30 }, /* ep - element ptr */ |
| 556 | { "gp", 4 }, /* gp - global ptr */ |
| 557 | { "hp", 2 }, /* hp - handler stack ptr */ |
| 558 | { "lp", 31 }, /* lp - link ptr */ |
| 559 | { "r0", 0 }, |
| 560 | { "r1", 1 }, |
| 561 | { "r10", 10 }, |
| 562 | { "r11", 11 }, |
| 563 | { "r12", 12 }, |
| 564 | { "r13", 13 }, |
| 565 | { "r14", 14 }, |
| 566 | { "r15", 15 }, |
| 567 | { "r16", 16 }, |
| 568 | { "r17", 17 }, |
| 569 | { "r18", 18 }, |
| 570 | { "r19", 19 }, |
| 571 | { "r2", 2 }, |
| 572 | { "r20", 20 }, |
| 573 | { "r21", 21 }, |
| 574 | { "r22", 22 }, |
| 575 | { "r23", 23 }, |
| 576 | { "r24", 24 }, |
| 577 | { "r25", 25 }, |
| 578 | { "r26", 26 }, |
| 579 | { "r27", 27 }, |
| 580 | { "r28", 28 }, |
| 581 | { "r29", 29 }, |
| 582 | { "r3", 3 }, |
| 583 | { "r30", 30 }, |
| 584 | { "r31", 31 }, |
| 585 | { "r4", 4 }, |
| 586 | { "r5", 5 }, |
| 587 | { "r6", 6 }, |
| 588 | { "r7", 7 }, |
| 589 | { "r8", 8 }, |
| 590 | { "r9", 9 }, |
| 591 | { "sp", 3 }, /* sp - stack ptr */ |
| 592 | { "tp", 5 }, /* tp - text ptr */ |
| 593 | { "zero", 0 }, |
| 594 | }; |
| 595 | |
| 596 | #define REG_NAME_CNT \ |
| 597 | (sizeof (pre_defined_registers) / sizeof (struct reg_name)) |
| 598 | |
| 599 | static const struct reg_name system_registers[] = |
| 600 | { |
| 601 | { "asid", 23 }, |
| 602 | { "bpc", 22 }, |
| 603 | { "bpav", 24 }, |
| 604 | { "bpam", 25 }, |
| 605 | { "bpdv", 26 }, |
| 606 | { "bpdm", 27 }, |
| 607 | { "ctbp", 20 }, |
| 608 | { "ctpc", 16 }, |
| 609 | { "ctpsw", 17 }, |
| 610 | { "dbpc", 18 }, |
| 611 | { "dbpsw", 19 }, |
| 612 | { "dir", 21 }, |
| 613 | { "ecr", 4 }, |
| 614 | { "eipc", 0 }, |
| 615 | { "eipsw", 1 }, |
| 616 | { "fepc", 2 }, |
| 617 | { "fepsw", 3 }, |
| 618 | { "psw", 5 }, |
| 619 | }; |
| 620 | |
| 621 | #define SYSREG_NAME_CNT \ |
| 622 | (sizeof (system_registers) / sizeof (struct reg_name)) |
| 623 | |
| 624 | static const struct reg_name system_list_registers[] = |
| 625 | { |
| 626 | {"PS", 5 }, |
| 627 | {"SR", 0 + 1} |
| 628 | }; |
| 629 | |
| 630 | #define SYSREGLIST_NAME_CNT \ |
| 631 | (sizeof (system_list_registers) / sizeof (struct reg_name)) |
| 632 | |
| 633 | static const struct reg_name cc_names[] = |
| 634 | { |
| 635 | { "c", 0x1 }, |
| 636 | { "e", 0x2 }, |
| 637 | { "ge", 0xe }, |
| 638 | { "gt", 0xf }, |
| 639 | { "h", 0xb }, |
| 640 | { "l", 0x1 }, |
| 641 | { "le", 0x7 }, |
| 642 | { "lt", 0x6 }, |
| 643 | { "n", 0x4 }, |
| 644 | { "nc", 0x9 }, |
| 645 | { "ne", 0xa }, |
| 646 | { "nh", 0x3 }, |
| 647 | { "nl", 0x9 }, |
| 648 | { "ns", 0xc }, |
| 649 | { "nv", 0x8 }, |
| 650 | { "nz", 0xa }, |
| 651 | { "p", 0xc }, |
| 652 | { "s", 0x4 }, |
| 653 | { "sa", 0xd }, |
| 654 | { "t", 0x5 }, |
| 655 | { "v", 0x0 }, |
| 656 | { "z", 0x2 }, |
| 657 | }; |
| 658 | |
| 659 | #define CC_NAME_CNT \ |
| 660 | (sizeof (cc_names) / sizeof (struct reg_name)) |
| 661 | |
| 662 | /* Do a binary search of the given register table to see if NAME is a |
| 663 | valid regiter name. Return the register number from the array on |
| 664 | success, or -1 on failure. */ |
| 665 | |
| 666 | static int reg_name_search |
| 667 | PARAMS ((const struct reg_name *, int, const char *, bfd_boolean)); |
| 668 | |
| 669 | static int |
| 670 | reg_name_search (regs, regcount, name, accept_numbers) |
| 671 | const struct reg_name *regs; |
| 672 | int regcount; |
| 673 | const char *name; |
| 674 | bfd_boolean accept_numbers; |
| 675 | { |
| 676 | int middle, low, high; |
| 677 | int cmp; |
| 678 | symbolS *symbolP; |
| 679 | |
| 680 | /* If the register name is a symbol, then evaluate it. */ |
| 681 | if ((symbolP = symbol_find (name)) != NULL) |
| 682 | { |
| 683 | /* If the symbol is an alias for another name then use that. |
| 684 | If the symbol is an alias for a number, then return the number. */ |
| 685 | if (symbol_equated_p (symbolP)) |
| 686 | { |
| 687 | name |
| 688 | = S_GET_NAME (symbol_get_value_expression (symbolP)->X_add_symbol); |
| 689 | } |
| 690 | else if (accept_numbers) |
| 691 | { |
| 692 | int reg = S_GET_VALUE (symbolP); |
| 693 | |
| 694 | if (reg >= 0 && reg <= 31) |
| 695 | return reg; |
| 696 | } |
| 697 | |
| 698 | /* Otherwise drop through and try parsing name normally. */ |
| 699 | } |
| 700 | |
| 701 | low = 0; |
| 702 | high = regcount - 1; |
| 703 | |
| 704 | do |
| 705 | { |
| 706 | middle = (low + high) / 2; |
| 707 | cmp = strcasecmp (name, regs[middle].name); |
| 708 | if (cmp < 0) |
| 709 | high = middle - 1; |
| 710 | else if (cmp > 0) |
| 711 | low = middle + 1; |
| 712 | else |
| 713 | return regs[middle].value; |
| 714 | } |
| 715 | while (low <= high); |
| 716 | return -1; |
| 717 | } |
| 718 | |
| 719 | /* Summary of register_name(). |
| 720 | |
| 721 | in: Input_line_pointer points to 1st char of operand. |
| 722 | |
| 723 | out: An expressionS. |
| 724 | The operand may have been a register: in this case, X_op == O_register, |
| 725 | X_add_number is set to the register number, and truth is returned. |
| 726 | Input_line_pointer->(next non-blank) char after operand, or is in |
| 727 | its original state. */ |
| 728 | |
| 729 | static bfd_boolean register_name PARAMS ((expressionS *)); |
| 730 | |
| 731 | static bfd_boolean |
| 732 | register_name (expressionP) |
| 733 | expressionS *expressionP; |
| 734 | { |
| 735 | int reg_number; |
| 736 | char *name; |
| 737 | char *start; |
| 738 | char c; |
| 739 | |
| 740 | /* Find the spelling of the operand. */ |
| 741 | start = name = input_line_pointer; |
| 742 | |
| 743 | c = get_symbol_end (); |
| 744 | |
| 745 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, |
| 746 | name, FALSE); |
| 747 | |
| 748 | /* Put back the delimiting char. */ |
| 749 | *input_line_pointer = c; |
| 750 | |
| 751 | /* Look to see if it's in the register table. */ |
| 752 | if (reg_number >= 0) |
| 753 | { |
| 754 | expressionP->X_op = O_register; |
| 755 | expressionP->X_add_number = reg_number; |
| 756 | |
| 757 | /* Make the rest nice. */ |
| 758 | expressionP->X_add_symbol = NULL; |
| 759 | expressionP->X_op_symbol = NULL; |
| 760 | |
| 761 | return TRUE; |
| 762 | } |
| 763 | else |
| 764 | { |
| 765 | /* Reset the line as if we had not done anything. */ |
| 766 | input_line_pointer = start; |
| 767 | |
| 768 | return FALSE; |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | /* Summary of system_register_name(). |
| 773 | |
| 774 | in: INPUT_LINE_POINTER points to 1st char of operand. |
| 775 | EXPRESSIONP points to an expression structure to be filled in. |
| 776 | ACCEPT_NUMBERS is true iff numerical register names may be used. |
| 777 | ACCEPT_LIST_NAMES is true iff the special names PS and SR may be |
| 778 | accepted. |
| 779 | |
| 780 | out: An expressionS structure in expressionP. |
| 781 | The operand may have been a register: in this case, X_op == O_register, |
| 782 | X_add_number is set to the register number, and truth is returned. |
| 783 | Input_line_pointer->(next non-blank) char after operand, or is in |
| 784 | its original state. */ |
| 785 | |
| 786 | static bfd_boolean system_register_name |
| 787 | PARAMS ((expressionS *, bfd_boolean, bfd_boolean)); |
| 788 | |
| 789 | static bfd_boolean |
| 790 | system_register_name (expressionP, accept_numbers, accept_list_names) |
| 791 | expressionS *expressionP; |
| 792 | bfd_boolean accept_numbers; |
| 793 | bfd_boolean accept_list_names; |
| 794 | { |
| 795 | int reg_number; |
| 796 | char *name; |
| 797 | char *start; |
| 798 | char c; |
| 799 | |
| 800 | /* Find the spelling of the operand. */ |
| 801 | start = name = input_line_pointer; |
| 802 | |
| 803 | c = get_symbol_end (); |
| 804 | reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name, |
| 805 | accept_numbers); |
| 806 | |
| 807 | /* Put back the delimiting char. */ |
| 808 | *input_line_pointer = c; |
| 809 | |
| 810 | if (reg_number < 0 |
| 811 | && accept_numbers) |
| 812 | { |
| 813 | /* Reset input_line pointer. */ |
| 814 | input_line_pointer = start; |
| 815 | |
| 816 | if (ISDIGIT (*input_line_pointer)) |
| 817 | { |
| 818 | reg_number = strtol (input_line_pointer, &input_line_pointer, 10); |
| 819 | |
| 820 | /* Make sure that the register number is allowable. */ |
| 821 | if (reg_number < 0 |
| 822 | || (reg_number > 5 && reg_number < 16) |
| 823 | || reg_number > 27) |
| 824 | { |
| 825 | reg_number = -1; |
| 826 | } |
| 827 | } |
| 828 | else if (accept_list_names) |
| 829 | { |
| 830 | c = get_symbol_end (); |
| 831 | reg_number = reg_name_search (system_list_registers, |
| 832 | SYSREGLIST_NAME_CNT, name, FALSE); |
| 833 | |
| 834 | /* Put back the delimiting char. */ |
| 835 | *input_line_pointer = c; |
| 836 | } |
| 837 | } |
| 838 | |
| 839 | /* Look to see if it's in the register table. */ |
| 840 | if (reg_number >= 0) |
| 841 | { |
| 842 | expressionP->X_op = O_register; |
| 843 | expressionP->X_add_number = reg_number; |
| 844 | |
| 845 | /* Make the rest nice. */ |
| 846 | expressionP->X_add_symbol = NULL; |
| 847 | expressionP->X_op_symbol = NULL; |
| 848 | |
| 849 | return TRUE; |
| 850 | } |
| 851 | else |
| 852 | { |
| 853 | /* Reset the line as if we had not done anything. */ |
| 854 | input_line_pointer = start; |
| 855 | |
| 856 | return FALSE; |
| 857 | } |
| 858 | } |
| 859 | |
| 860 | /* Summary of cc_name(). |
| 861 | |
| 862 | in: INPUT_LINE_POINTER points to 1st char of operand. |
| 863 | |
| 864 | out: An expressionS. |
| 865 | The operand may have been a register: in this case, X_op == O_register, |
| 866 | X_add_number is set to the register number, and truth is returned. |
| 867 | Input_line_pointer->(next non-blank) char after operand, or is in |
| 868 | its original state. */ |
| 869 | |
| 870 | static bfd_boolean cc_name PARAMS ((expressionS *)); |
| 871 | |
| 872 | static bfd_boolean |
| 873 | cc_name (expressionP) |
| 874 | expressionS *expressionP; |
| 875 | { |
| 876 | int reg_number; |
| 877 | char *name; |
| 878 | char *start; |
| 879 | char c; |
| 880 | |
| 881 | /* Find the spelling of the operand. */ |
| 882 | start = name = input_line_pointer; |
| 883 | |
| 884 | c = get_symbol_end (); |
| 885 | reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE); |
| 886 | |
| 887 | /* Put back the delimiting char. */ |
| 888 | *input_line_pointer = c; |
| 889 | |
| 890 | /* Look to see if it's in the register table. */ |
| 891 | if (reg_number >= 0) |
| 892 | { |
| 893 | expressionP->X_op = O_constant; |
| 894 | expressionP->X_add_number = reg_number; |
| 895 | |
| 896 | /* Make the rest nice. */ |
| 897 | expressionP->X_add_symbol = NULL; |
| 898 | expressionP->X_op_symbol = NULL; |
| 899 | |
| 900 | return TRUE; |
| 901 | } |
| 902 | else |
| 903 | { |
| 904 | /* Reset the line as if we had not done anything. */ |
| 905 | input_line_pointer = start; |
| 906 | |
| 907 | return FALSE; |
| 908 | } |
| 909 | } |
| 910 | |
| 911 | static void skip_white_space PARAMS ((void)); |
| 912 | |
| 913 | static void |
| 914 | skip_white_space () |
| 915 | { |
| 916 | while (*input_line_pointer == ' ' |
| 917 | || *input_line_pointer == '\t') |
| 918 | ++input_line_pointer; |
| 919 | } |
| 920 | |
| 921 | /* Summary of parse_register_list (). |
| 922 | |
| 923 | in: INPUT_LINE_POINTER points to 1st char of a list of registers. |
| 924 | INSN is the partially constructed instruction. |
| 925 | OPERAND is the operand being inserted. |
| 926 | |
| 927 | out: NULL if the parse completed successfully, otherwise a |
| 928 | pointer to an error message is returned. If the parse |
| 929 | completes the correct bit fields in the instruction |
| 930 | will be filled in. |
| 931 | |
| 932 | Parses register lists with the syntax: |
| 933 | |
| 934 | { rX } |
| 935 | { rX, rY } |
| 936 | { rX - rY } |
| 937 | { rX - rY, rZ } |
| 938 | etc |
| 939 | |
| 940 | and also parses constant epxressions whoes bits indicate the |
| 941 | registers in the lists. The LSB in the expression refers to |
| 942 | the lowest numbered permissable register in the register list, |
| 943 | and so on upwards. System registers are considered to be very |
| 944 | high numbers. */ |
| 945 | |
| 946 | static char *parse_register_list |
| 947 | PARAMS ((unsigned long *, const struct v850_operand *)); |
| 948 | |
| 949 | static char * |
| 950 | parse_register_list (insn, operand) |
| 951 | unsigned long *insn; |
| 952 | const struct v850_operand *operand; |
| 953 | { |
| 954 | static int type1_regs[32] = { |
| 955 | 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 956 | 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 |
| 957 | }; |
| 958 | static int type2_regs[32] = { |
| 959 | 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 960 | 0, 0, 0, 0, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 |
| 961 | }; |
| 962 | static int type3_regs[32] = { |
| 963 | 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 964 | 0, 0, 0, 0, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8 |
| 965 | }; |
| 966 | int *regs; |
| 967 | expressionS exp; |
| 968 | |
| 969 | /* Select a register array to parse. */ |
| 970 | switch (operand->shift) |
| 971 | { |
| 972 | case 0xffe00001: regs = type1_regs; break; |
| 973 | case 0xfff8000f: regs = type2_regs; break; |
| 974 | case 0xfff8001f: regs = type3_regs; break; |
| 975 | default: |
| 976 | as_bad (_("unknown operand shift: %x\n"), operand->shift); |
| 977 | return _("internal failure in parse_register_list"); |
| 978 | } |
| 979 | |
| 980 | skip_white_space (); |
| 981 | |
| 982 | /* If the expression starts with a curly brace it is a register list. |
| 983 | Otherwise it is a constant expression, whoes bits indicate which |
| 984 | registers are to be included in the list. */ |
| 985 | if (*input_line_pointer != '{') |
| 986 | { |
| 987 | int reg; |
| 988 | int i; |
| 989 | |
| 990 | expression (&exp); |
| 991 | |
| 992 | if (exp.X_op != O_constant) |
| 993 | return _("constant expression or register list expected"); |
| 994 | |
| 995 | if (regs == type1_regs) |
| 996 | { |
| 997 | if (exp.X_add_number & 0xFFFFF000) |
| 998 | return _("high bits set in register list expression"); |
| 999 | |
| 1000 | for (reg = 20; reg < 32; reg++) |
| 1001 | if (exp.X_add_number & (1 << (reg - 20))) |
| 1002 | { |
| 1003 | for (i = 0; i < 32; i++) |
| 1004 | if (regs[i] == reg) |
| 1005 | *insn |= (1 << i); |
| 1006 | } |
| 1007 | } |
| 1008 | else if (regs == type2_regs) |
| 1009 | { |
| 1010 | if (exp.X_add_number & 0xFFFE0000) |
| 1011 | return _("high bits set in register list expression"); |
| 1012 | |
| 1013 | for (reg = 1; reg < 16; reg++) |
| 1014 | if (exp.X_add_number & (1 << (reg - 1))) |
| 1015 | { |
| 1016 | for (i = 0; i < 32; i++) |
| 1017 | if (regs[i] == reg) |
| 1018 | *insn |= (1 << i); |
| 1019 | } |
| 1020 | |
| 1021 | if (exp.X_add_number & (1 << 15)) |
| 1022 | *insn |= (1 << 3); |
| 1023 | |
| 1024 | if (exp.X_add_number & (1 << 16)) |
| 1025 | *insn |= (1 << 19); |
| 1026 | } |
| 1027 | else /* regs == type3_regs */ |
| 1028 | { |
| 1029 | if (exp.X_add_number & 0xFFFE0000) |
| 1030 | return _("high bits set in register list expression"); |
| 1031 | |
| 1032 | for (reg = 16; reg < 32; reg++) |
| 1033 | if (exp.X_add_number & (1 << (reg - 16))) |
| 1034 | { |
| 1035 | for (i = 0; i < 32; i++) |
| 1036 | if (regs[i] == reg) |
| 1037 | *insn |= (1 << i); |
| 1038 | } |
| 1039 | |
| 1040 | if (exp.X_add_number & (1 << 16)) |
| 1041 | *insn |= (1 << 19); |
| 1042 | } |
| 1043 | |
| 1044 | return NULL; |
| 1045 | } |
| 1046 | |
| 1047 | input_line_pointer++; |
| 1048 | |
| 1049 | /* Parse the register list until a terminator (closing curly brace or |
| 1050 | new-line) is found. */ |
| 1051 | for (;;) |
| 1052 | { |
| 1053 | if (register_name (&exp)) |
| 1054 | { |
| 1055 | int i; |
| 1056 | |
| 1057 | /* Locate the given register in the list, and if it is there, |
| 1058 | insert the corresponding bit into the instruction. */ |
| 1059 | for (i = 0; i < 32; i++) |
| 1060 | { |
| 1061 | if (regs[i] == exp.X_add_number) |
| 1062 | { |
| 1063 | *insn |= (1 << i); |
| 1064 | break; |
| 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | if (i == 32) |
| 1069 | return _("illegal register included in list"); |
| 1070 | } |
| 1071 | else if (system_register_name (&exp, TRUE, TRUE)) |
| 1072 | { |
| 1073 | if (regs == type1_regs) |
| 1074 | { |
| 1075 | return _("system registers cannot be included in list"); |
| 1076 | } |
| 1077 | else if (exp.X_add_number == 5) |
| 1078 | { |
| 1079 | if (regs == type2_regs) |
| 1080 | return _("PSW cannot be included in list"); |
| 1081 | else |
| 1082 | *insn |= 0x8; |
| 1083 | } |
| 1084 | else if (exp.X_add_number < 4) |
| 1085 | *insn |= 0x80000; |
| 1086 | else |
| 1087 | return _("High value system registers cannot be included in list"); |
| 1088 | } |
| 1089 | else if (*input_line_pointer == '}') |
| 1090 | { |
| 1091 | input_line_pointer++; |
| 1092 | break; |
| 1093 | } |
| 1094 | else if (*input_line_pointer == ',') |
| 1095 | { |
| 1096 | input_line_pointer++; |
| 1097 | continue; |
| 1098 | } |
| 1099 | else if (*input_line_pointer == '-') |
| 1100 | { |
| 1101 | /* We have encountered a range of registers: rX - rY. */ |
| 1102 | int j; |
| 1103 | expressionS exp2; |
| 1104 | |
| 1105 | /* Skip the dash. */ |
| 1106 | ++input_line_pointer; |
| 1107 | |
| 1108 | /* Get the second register in the range. */ |
| 1109 | if (! register_name (&exp2)) |
| 1110 | { |
| 1111 | return _("second register should follow dash in register list"); |
| 1112 | exp2.X_add_number = exp.X_add_number; |
| 1113 | } |
| 1114 | |
| 1115 | /* Add the rest of the registers in the range. */ |
| 1116 | for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++) |
| 1117 | { |
| 1118 | int i; |
| 1119 | |
| 1120 | /* Locate the given register in the list, and if it is there, |
| 1121 | insert the corresponding bit into the instruction. */ |
| 1122 | for (i = 0; i < 32; i++) |
| 1123 | { |
| 1124 | if (regs[i] == j) |
| 1125 | { |
| 1126 | *insn |= (1 << i); |
| 1127 | break; |
| 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | if (i == 32) |
| 1132 | return _("illegal register included in list"); |
| 1133 | } |
| 1134 | } |
| 1135 | else |
| 1136 | break; |
| 1137 | |
| 1138 | skip_white_space (); |
| 1139 | } |
| 1140 | |
| 1141 | return NULL; |
| 1142 | } |
| 1143 | |
| 1144 | const char *md_shortopts = "m:"; |
| 1145 | |
| 1146 | struct option md_longopts[] = { |
| 1147 | {NULL, no_argument, NULL, 0} |
| 1148 | }; |
| 1149 | |
| 1150 | size_t md_longopts_size = sizeof (md_longopts); |
| 1151 | |
| 1152 | void |
| 1153 | md_show_usage (stream) |
| 1154 | FILE *stream; |
| 1155 | { |
| 1156 | fprintf (stream, _(" V850 options:\n")); |
| 1157 | fprintf (stream, _(" -mwarn-signed-overflow Warn if signed immediate values overflow\n")); |
| 1158 | fprintf (stream, _(" -mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n")); |
| 1159 | fprintf (stream, _(" -mv850 The code is targeted at the v850\n")); |
| 1160 | fprintf (stream, _(" -mv850e The code is targeted at the v850e\n")); |
| 1161 | fprintf (stream, _(" -mv850any The code is generic, despite any processor specific instructions\n")); |
| 1162 | fprintf (stream, _(" -mrelax Enable relaxation\n")); |
| 1163 | |
| 1164 | } |
| 1165 | |
| 1166 | int |
| 1167 | md_parse_option (c, arg) |
| 1168 | int c; |
| 1169 | char *arg; |
| 1170 | { |
| 1171 | if (c != 'm') |
| 1172 | { |
| 1173 | if (c != 'a') |
| 1174 | /* xgettext:c-format */ |
| 1175 | fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg); |
| 1176 | return 0; |
| 1177 | } |
| 1178 | |
| 1179 | if (strcmp (arg, "warn-signed-overflow") == 0) |
| 1180 | { |
| 1181 | warn_signed_overflows = TRUE; |
| 1182 | } |
| 1183 | else if (strcmp (arg, "warn-unsigned-overflow") == 0) |
| 1184 | { |
| 1185 | warn_unsigned_overflows = TRUE; |
| 1186 | } |
| 1187 | else if (strcmp (arg, "v850") == 0) |
| 1188 | { |
| 1189 | machine = 0; |
| 1190 | processor_mask = PROCESSOR_V850; |
| 1191 | } |
| 1192 | else if (strcmp (arg, "v850e") == 0) |
| 1193 | { |
| 1194 | machine = bfd_mach_v850e; |
| 1195 | processor_mask = PROCESSOR_V850E; |
| 1196 | } |
| 1197 | else if (strcmp (arg, "v850any") == 0) |
| 1198 | { |
| 1199 | /* Tell the world that this is for any v850 chip. */ |
| 1200 | machine = 0; |
| 1201 | |
| 1202 | /* But support instructions for the extended versions. */ |
| 1203 | processor_mask = PROCESSOR_V850E; |
| 1204 | } |
| 1205 | else if (strcmp (arg, "relax") == 0) |
| 1206 | v850_relax = 1; |
| 1207 | else |
| 1208 | { |
| 1209 | /* xgettext:c-format */ |
| 1210 | fprintf (stderr, _("unknown command line option: -%c%s\n"), c, arg); |
| 1211 | return 0; |
| 1212 | } |
| 1213 | |
| 1214 | return 1; |
| 1215 | } |
| 1216 | |
| 1217 | symbolS * |
| 1218 | md_undefined_symbol (name) |
| 1219 | char *name ATTRIBUTE_UNUSED; |
| 1220 | { |
| 1221 | return 0; |
| 1222 | } |
| 1223 | |
| 1224 | char * |
| 1225 | md_atof (type, litp, sizep) |
| 1226 | int type; |
| 1227 | char *litp; |
| 1228 | int *sizep; |
| 1229 | { |
| 1230 | int prec; |
| 1231 | LITTLENUM_TYPE words[4]; |
| 1232 | char *t; |
| 1233 | int i; |
| 1234 | |
| 1235 | switch (type) |
| 1236 | { |
| 1237 | case 'f': |
| 1238 | prec = 2; |
| 1239 | break; |
| 1240 | |
| 1241 | case 'd': |
| 1242 | prec = 4; |
| 1243 | break; |
| 1244 | |
| 1245 | default: |
| 1246 | *sizep = 0; |
| 1247 | return _("bad call to md_atof"); |
| 1248 | } |
| 1249 | |
| 1250 | t = atof_ieee (input_line_pointer, type, words); |
| 1251 | if (t) |
| 1252 | input_line_pointer = t; |
| 1253 | |
| 1254 | *sizep = prec * 2; |
| 1255 | |
| 1256 | for (i = prec - 1; i >= 0; i--) |
| 1257 | { |
| 1258 | md_number_to_chars (litp, (valueT) words[i], 2); |
| 1259 | litp += 2; |
| 1260 | } |
| 1261 | |
| 1262 | return NULL; |
| 1263 | } |
| 1264 | |
| 1265 | /* Very gross. */ |
| 1266 | |
| 1267 | void |
| 1268 | md_convert_frag (abfd, sec, fragP) |
| 1269 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1270 | asection *sec; |
| 1271 | fragS *fragP; |
| 1272 | { |
| 1273 | subseg_change (sec, 0); |
| 1274 | |
| 1275 | /* In range conditional or unconditional branch. */ |
| 1276 | if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2) |
| 1277 | { |
| 1278 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, |
| 1279 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + (int)fragP->fr_opcode); |
| 1280 | fragP->fr_fix += 2; |
| 1281 | } |
| 1282 | /* Out of range conditional branch. Emit a branch around a jump. */ |
| 1283 | else if (fragP->fr_subtype == 1) |
| 1284 | { |
| 1285 | unsigned char *buffer = |
| 1286 | (unsigned char *) (fragP->fr_fix + fragP->fr_literal); |
| 1287 | |
| 1288 | /* Reverse the condition of the first branch. */ |
| 1289 | buffer[0] ^= 0x08; |
| 1290 | /* Mask off all the displacement bits. */ |
| 1291 | buffer[0] &= 0x8f; |
| 1292 | buffer[1] &= 0x07; |
| 1293 | /* Now set the displacement bits so that we branch |
| 1294 | around the unconditional branch. */ |
| 1295 | buffer[0] |= 0x30; |
| 1296 | |
| 1297 | /* Now create the unconditional branch + fixup to the final |
| 1298 | target. */ |
| 1299 | md_number_to_chars (buffer + 2, 0x00000780, 4); |
| 1300 | fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, |
| 1301 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + |
| 1302 | (int) fragP->fr_opcode + 1); |
| 1303 | fragP->fr_fix += 6; |
| 1304 | } |
| 1305 | /* Out of range unconditional branch. Emit a jump. */ |
| 1306 | else if (fragP->fr_subtype == 3) |
| 1307 | { |
| 1308 | md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4); |
| 1309 | fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, |
| 1310 | fragP->fr_offset, 1, BFD_RELOC_UNUSED + |
| 1311 | (int) fragP->fr_opcode + 1); |
| 1312 | fragP->fr_fix += 4; |
| 1313 | } |
| 1314 | else |
| 1315 | abort (); |
| 1316 | } |
| 1317 | |
| 1318 | valueT |
| 1319 | md_section_align (seg, addr) |
| 1320 | asection *seg; |
| 1321 | valueT addr; |
| 1322 | { |
| 1323 | int align = bfd_get_section_alignment (stdoutput, seg); |
| 1324 | return ((addr + (1 << align) - 1) & (-1 << align)); |
| 1325 | } |
| 1326 | |
| 1327 | void |
| 1328 | md_begin () |
| 1329 | { |
| 1330 | char *prev_name = ""; |
| 1331 | const struct v850_opcode *op; |
| 1332 | |
| 1333 | if (strncmp (TARGET_CPU, "v850e", 5) == 0) |
| 1334 | { |
| 1335 | if (machine == -1) |
| 1336 | machine = bfd_mach_v850e; |
| 1337 | |
| 1338 | if (processor_mask == -1) |
| 1339 | processor_mask = PROCESSOR_V850E; |
| 1340 | } |
| 1341 | else if (strncmp (TARGET_CPU, "v850", 4) == 0) |
| 1342 | { |
| 1343 | if (machine == -1) |
| 1344 | machine = 0; |
| 1345 | |
| 1346 | if (processor_mask == -1) |
| 1347 | processor_mask = PROCESSOR_V850; |
| 1348 | } |
| 1349 | else |
| 1350 | /* xgettext:c-format */ |
| 1351 | as_bad (_("Unable to determine default target processor from string: %s"), |
| 1352 | TARGET_CPU); |
| 1353 | |
| 1354 | v850_hash = hash_new (); |
| 1355 | |
| 1356 | /* Insert unique names into hash table. The V850 instruction set |
| 1357 | has many identical opcode names that have different opcodes based |
| 1358 | on the operands. This hash table then provides a quick index to |
| 1359 | the first opcode with a particular name in the opcode table. */ |
| 1360 | op = v850_opcodes; |
| 1361 | while (op->name) |
| 1362 | { |
| 1363 | if (strcmp (prev_name, op->name)) |
| 1364 | { |
| 1365 | prev_name = (char *) op->name; |
| 1366 | hash_insert (v850_hash, op->name, (char *) op); |
| 1367 | } |
| 1368 | op++; |
| 1369 | } |
| 1370 | |
| 1371 | v850_seg_table[BSS_SECTION].s = bss_section; |
| 1372 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine); |
| 1373 | } |
| 1374 | |
| 1375 | static bfd_reloc_code_real_type handle_ctoff |
| 1376 | PARAMS ((const struct v850_operand *)); |
| 1377 | |
| 1378 | static bfd_reloc_code_real_type |
| 1379 | handle_ctoff (operand) |
| 1380 | const struct v850_operand *operand; |
| 1381 | { |
| 1382 | if (operand == NULL) |
| 1383 | return BFD_RELOC_V850_CALLT_16_16_OFFSET; |
| 1384 | |
| 1385 | if (operand->bits != 6 |
| 1386 | || operand->shift != 0) |
| 1387 | { |
| 1388 | as_bad (_("ctoff() relocation used on an instruction which does not support it")); |
| 1389 | return BFD_RELOC_64; /* Used to indicate an error condition. */ |
| 1390 | } |
| 1391 | |
| 1392 | return BFD_RELOC_V850_CALLT_6_7_OFFSET; |
| 1393 | } |
| 1394 | |
| 1395 | static bfd_reloc_code_real_type handle_sdaoff |
| 1396 | PARAMS ((const struct v850_operand *)); |
| 1397 | |
| 1398 | static bfd_reloc_code_real_type |
| 1399 | handle_sdaoff (operand) |
| 1400 | const struct v850_operand *operand; |
| 1401 | { |
| 1402 | if (operand == NULL) |
| 1403 | return BFD_RELOC_V850_SDA_16_16_OFFSET; |
| 1404 | |
| 1405 | if (operand->bits == 15 && operand->shift == 17) |
| 1406 | return BFD_RELOC_V850_SDA_15_16_OFFSET; |
| 1407 | |
| 1408 | if (operand->bits == -1) |
| 1409 | return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET; |
| 1410 | |
| 1411 | if (operand->bits != 16 |
| 1412 | || operand->shift != 16) |
| 1413 | { |
| 1414 | as_bad (_("sdaoff() relocation used on an instruction which does not support it")); |
| 1415 | return BFD_RELOC_64; /* Used to indicate an error condition. */ |
| 1416 | } |
| 1417 | |
| 1418 | return BFD_RELOC_V850_SDA_16_16_OFFSET; |
| 1419 | } |
| 1420 | |
| 1421 | static bfd_reloc_code_real_type handle_zdaoff |
| 1422 | PARAMS ((const struct v850_operand *)); |
| 1423 | |
| 1424 | static bfd_reloc_code_real_type |
| 1425 | handle_zdaoff (operand) |
| 1426 | const struct v850_operand *operand; |
| 1427 | { |
| 1428 | if (operand == NULL) |
| 1429 | return BFD_RELOC_V850_ZDA_16_16_OFFSET; |
| 1430 | |
| 1431 | if (operand->bits == 15 && operand->shift == 17) |
| 1432 | return BFD_RELOC_V850_ZDA_15_16_OFFSET; |
| 1433 | |
| 1434 | if (operand->bits == -1) |
| 1435 | return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET; |
| 1436 | |
| 1437 | if (operand->bits != 16 |
| 1438 | || operand->shift != 16) |
| 1439 | { |
| 1440 | as_bad (_("zdaoff() relocation used on an instruction which does not support it")); |
| 1441 | /* Used to indicate an error condition. */ |
| 1442 | return BFD_RELOC_64; |
| 1443 | } |
| 1444 | |
| 1445 | return BFD_RELOC_V850_ZDA_16_16_OFFSET; |
| 1446 | } |
| 1447 | |
| 1448 | static bfd_reloc_code_real_type handle_tdaoff |
| 1449 | PARAMS ((const struct v850_operand *)); |
| 1450 | |
| 1451 | static bfd_reloc_code_real_type |
| 1452 | handle_tdaoff (operand) |
| 1453 | const struct v850_operand *operand; |
| 1454 | { |
| 1455 | if (operand == NULL) |
| 1456 | /* Data item, not an instruction. */ |
| 1457 | return BFD_RELOC_V850_TDA_7_7_OFFSET; |
| 1458 | |
| 1459 | if (operand->bits == 6 && operand->shift == 1) |
| 1460 | /* sld.w/sst.w, operand: D8_6 */ |
| 1461 | return BFD_RELOC_V850_TDA_6_8_OFFSET; |
| 1462 | |
| 1463 | if (operand->bits == 4 && operand->insert != NULL) |
| 1464 | /* sld.hu, operand: D5-4 */ |
| 1465 | return BFD_RELOC_V850_TDA_4_5_OFFSET; |
| 1466 | |
| 1467 | if (operand->bits == 4 && operand->insert == NULL) |
| 1468 | /* sld.bu, operand: D4 */ |
| 1469 | return BFD_RELOC_V850_TDA_4_4_OFFSET; |
| 1470 | |
| 1471 | if (operand->bits == 16 && operand->shift == 16) |
| 1472 | /* set1 & chums, operands: D16 */ |
| 1473 | return BFD_RELOC_V850_TDA_16_16_OFFSET; |
| 1474 | |
| 1475 | if (operand->bits != 7) |
| 1476 | { |
| 1477 | as_bad (_("tdaoff() relocation used on an instruction which does not support it")); |
| 1478 | /* Used to indicate an error condition. */ |
| 1479 | return BFD_RELOC_64; |
| 1480 | } |
| 1481 | |
| 1482 | return operand->insert != NULL |
| 1483 | ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7 */ |
| 1484 | : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, opreand: D7 */ |
| 1485 | } |
| 1486 | |
| 1487 | /* Warning: The code in this function relies upon the definitions |
| 1488 | in the v850_operands[] array (defined in opcodes/v850-opc.c) |
| 1489 | matching the hard coded values contained herein. */ |
| 1490 | |
| 1491 | static bfd_reloc_code_real_type v850_reloc_prefix |
| 1492 | PARAMS ((const struct v850_operand *)); |
| 1493 | |
| 1494 | static bfd_reloc_code_real_type |
| 1495 | v850_reloc_prefix (operand) |
| 1496 | const struct v850_operand *operand; |
| 1497 | { |
| 1498 | bfd_boolean paren_skipped = FALSE; |
| 1499 | |
| 1500 | /* Skip leading opening parenthesis. */ |
| 1501 | if (*input_line_pointer == '(') |
| 1502 | { |
| 1503 | ++input_line_pointer; |
| 1504 | paren_skipped = TRUE; |
| 1505 | } |
| 1506 | |
| 1507 | #define CHECK_(name, reloc) \ |
| 1508 | if (strncmp (input_line_pointer, name "(", strlen (name) + 1) == 0) \ |
| 1509 | { \ |
| 1510 | input_line_pointer += strlen (name); \ |
| 1511 | return reloc; \ |
| 1512 | } |
| 1513 | |
| 1514 | CHECK_ ("hi0", BFD_RELOC_HI16 ); |
| 1515 | CHECK_ ("hi", BFD_RELOC_HI16_S ); |
| 1516 | CHECK_ ("lo", BFD_RELOC_LO16 ); |
| 1517 | CHECK_ ("sdaoff", handle_sdaoff (operand)); |
| 1518 | CHECK_ ("zdaoff", handle_zdaoff (operand)); |
| 1519 | CHECK_ ("tdaoff", handle_tdaoff (operand)); |
| 1520 | CHECK_ ("hilo", BFD_RELOC_32 ); |
| 1521 | CHECK_ ("ctoff", handle_ctoff (operand) ); |
| 1522 | |
| 1523 | /* Restore skipped parenthesis. */ |
| 1524 | if (paren_skipped) |
| 1525 | --input_line_pointer; |
| 1526 | |
| 1527 | return BFD_RELOC_UNUSED; |
| 1528 | } |
| 1529 | |
| 1530 | /* Insert an operand value into an instruction. */ |
| 1531 | |
| 1532 | static unsigned long v850_insert_operand |
| 1533 | PARAMS ((unsigned long, const struct v850_operand *, offsetT, char *, |
| 1534 | unsigned int, char *)); |
| 1535 | |
| 1536 | static unsigned long |
| 1537 | v850_insert_operand (insn, operand, val, file, line, str) |
| 1538 | unsigned long insn; |
| 1539 | const struct v850_operand *operand; |
| 1540 | offsetT val; |
| 1541 | char *file; |
| 1542 | unsigned int line; |
| 1543 | char *str; |
| 1544 | { |
| 1545 | if (operand->insert) |
| 1546 | { |
| 1547 | const char *message = NULL; |
| 1548 | |
| 1549 | insn = operand->insert (insn, val, &message); |
| 1550 | if (message != NULL) |
| 1551 | { |
| 1552 | if ((operand->flags & V850_OPERAND_SIGNED) |
| 1553 | && ! warn_signed_overflows |
| 1554 | && strstr (message, "out of range") != NULL) |
| 1555 | { |
| 1556 | /* Skip warning... */ |
| 1557 | } |
| 1558 | else if ((operand->flags & V850_OPERAND_SIGNED) == 0 |
| 1559 | && ! warn_unsigned_overflows |
| 1560 | && strstr (message, "out of range") != NULL) |
| 1561 | { |
| 1562 | /* Skip warning... */ |
| 1563 | } |
| 1564 | else if (str) |
| 1565 | { |
| 1566 | if (file == (char *) NULL) |
| 1567 | as_warn ("%s: %s", str, message); |
| 1568 | else |
| 1569 | as_warn_where (file, line, "%s: %s", str, message); |
| 1570 | } |
| 1571 | else |
| 1572 | { |
| 1573 | if (file == (char *) NULL) |
| 1574 | as_warn (message); |
| 1575 | else |
| 1576 | as_warn_where (file, line, message); |
| 1577 | } |
| 1578 | } |
| 1579 | } |
| 1580 | else |
| 1581 | { |
| 1582 | if (operand->bits != 32) |
| 1583 | { |
| 1584 | long min, max; |
| 1585 | |
| 1586 | if ((operand->flags & V850_OPERAND_SIGNED) != 0) |
| 1587 | { |
| 1588 | if (! warn_signed_overflows) |
| 1589 | max = (1 << operand->bits) - 1; |
| 1590 | else |
| 1591 | max = (1 << (operand->bits - 1)) - 1; |
| 1592 | |
| 1593 | min = -(1 << (operand->bits - 1)); |
| 1594 | } |
| 1595 | else |
| 1596 | { |
| 1597 | max = (1 << operand->bits) - 1; |
| 1598 | |
| 1599 | if (! warn_unsigned_overflows) |
| 1600 | min = -(1 << (operand->bits - 1)); |
| 1601 | else |
| 1602 | min = 0; |
| 1603 | } |
| 1604 | |
| 1605 | if (val < (offsetT) min || val > (offsetT) max) |
| 1606 | { |
| 1607 | /* xgettext:c-format */ |
| 1608 | const char *err = |
| 1609 | _("operand out of range (%s not between %ld and %ld)"); |
| 1610 | char buf[100]; |
| 1611 | |
| 1612 | /* Restore min and mix to expected values for decimal ranges. */ |
| 1613 | if ((operand->flags & V850_OPERAND_SIGNED) |
| 1614 | && ! warn_signed_overflows) |
| 1615 | max = (1 << (operand->bits - 1)) - 1; |
| 1616 | |
| 1617 | if (! (operand->flags & V850_OPERAND_SIGNED) |
| 1618 | && ! warn_unsigned_overflows) |
| 1619 | min = 0; |
| 1620 | |
| 1621 | if (str) |
| 1622 | { |
| 1623 | sprintf (buf, "%s: ", str); |
| 1624 | |
| 1625 | sprint_value (buf + strlen (buf), val); |
| 1626 | } |
| 1627 | else |
| 1628 | sprint_value (buf, val); |
| 1629 | |
| 1630 | if (file == (char *) NULL) |
| 1631 | as_warn (err, buf, min, max); |
| 1632 | else |
| 1633 | as_warn_where (file, line, err, buf, min, max); |
| 1634 | } |
| 1635 | } |
| 1636 | |
| 1637 | insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift); |
| 1638 | } |
| 1639 | |
| 1640 | return insn; |
| 1641 | } |
| 1642 | \f |
| 1643 | static char copy_of_instruction[128]; |
| 1644 | |
| 1645 | void |
| 1646 | md_assemble (str) |
| 1647 | char *str; |
| 1648 | { |
| 1649 | char *s; |
| 1650 | char *start_of_operands; |
| 1651 | struct v850_opcode *opcode; |
| 1652 | struct v850_opcode *next_opcode; |
| 1653 | const unsigned char *opindex_ptr; |
| 1654 | int next_opindex; |
| 1655 | int relaxable = 0; |
| 1656 | unsigned long insn; |
| 1657 | unsigned long insn_size; |
| 1658 | char *f; |
| 1659 | int i; |
| 1660 | int match; |
| 1661 | bfd_boolean extra_data_after_insn = FALSE; |
| 1662 | unsigned extra_data_len = 0; |
| 1663 | unsigned long extra_data = 0; |
| 1664 | char *saved_input_line_pointer; |
| 1665 | |
| 1666 | strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1); |
| 1667 | |
| 1668 | /* Get the opcode. */ |
| 1669 | for (s = str; *s != '\0' && ! ISSPACE (*s); s++) |
| 1670 | continue; |
| 1671 | |
| 1672 | if (*s != '\0') |
| 1673 | *s++ = '\0'; |
| 1674 | |
| 1675 | /* Find the first opcode with the proper name. */ |
| 1676 | opcode = (struct v850_opcode *) hash_find (v850_hash, str); |
| 1677 | if (opcode == NULL) |
| 1678 | { |
| 1679 | /* xgettext:c-format */ |
| 1680 | as_bad (_("Unrecognized opcode: `%s'"), str); |
| 1681 | ignore_rest_of_line (); |
| 1682 | return; |
| 1683 | } |
| 1684 | |
| 1685 | str = s; |
| 1686 | while (ISSPACE (*str)) |
| 1687 | ++str; |
| 1688 | |
| 1689 | start_of_operands = str; |
| 1690 | |
| 1691 | saved_input_line_pointer = input_line_pointer; |
| 1692 | |
| 1693 | for (;;) |
| 1694 | { |
| 1695 | const char *errmsg = NULL; |
| 1696 | |
| 1697 | match = 0; |
| 1698 | |
| 1699 | if ((opcode->processors & processor_mask) == 0) |
| 1700 | { |
| 1701 | errmsg = _("Target processor does not support this instruction."); |
| 1702 | goto error; |
| 1703 | } |
| 1704 | |
| 1705 | relaxable = 0; |
| 1706 | fc = 0; |
| 1707 | next_opindex = 0; |
| 1708 | insn = opcode->opcode; |
| 1709 | extra_data_after_insn = FALSE; |
| 1710 | |
| 1711 | input_line_pointer = str = start_of_operands; |
| 1712 | |
| 1713 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
| 1714 | { |
| 1715 | const struct v850_operand *operand; |
| 1716 | char *hold; |
| 1717 | expressionS ex; |
| 1718 | bfd_reloc_code_real_type reloc; |
| 1719 | |
| 1720 | if (next_opindex == 0) |
| 1721 | { |
| 1722 | operand = &v850_operands[*opindex_ptr]; |
| 1723 | } |
| 1724 | else |
| 1725 | { |
| 1726 | operand = &v850_operands[next_opindex]; |
| 1727 | next_opindex = 0; |
| 1728 | } |
| 1729 | |
| 1730 | errmsg = NULL; |
| 1731 | |
| 1732 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']') |
| 1733 | ++str; |
| 1734 | |
| 1735 | if (operand->flags & V850_OPERAND_RELAX) |
| 1736 | relaxable = 1; |
| 1737 | |
| 1738 | /* Gather the operand. */ |
| 1739 | hold = input_line_pointer; |
| 1740 | input_line_pointer = str; |
| 1741 | |
| 1742 | /* lo(), hi(), hi0(), etc... */ |
| 1743 | if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED) |
| 1744 | { |
| 1745 | /* This is a fake reloc, used to indicate an error condition. */ |
| 1746 | if (reloc == BFD_RELOC_64) |
| 1747 | { |
| 1748 | match = 1; |
| 1749 | goto error; |
| 1750 | } |
| 1751 | |
| 1752 | expression (&ex); |
| 1753 | |
| 1754 | if (ex.X_op == O_constant) |
| 1755 | { |
| 1756 | switch (reloc) |
| 1757 | { |
| 1758 | case BFD_RELOC_V850_ZDA_16_16_OFFSET: |
| 1759 | /* To cope with "not1 7, zdaoff(0xfffff006)[r0]" |
| 1760 | and the like. */ |
| 1761 | /* Fall through. */ |
| 1762 | |
| 1763 | case BFD_RELOC_LO16: |
| 1764 | { |
| 1765 | /* Truncate, then sign extend the value. */ |
| 1766 | ex.X_add_number = SEXT16 (ex.X_add_number); |
| 1767 | break; |
| 1768 | } |
| 1769 | |
| 1770 | case BFD_RELOC_HI16: |
| 1771 | { |
| 1772 | /* Truncate, then sign extend the value. */ |
| 1773 | ex.X_add_number = SEXT16 (ex.X_add_number >> 16); |
| 1774 | break; |
| 1775 | } |
| 1776 | |
| 1777 | case BFD_RELOC_HI16_S: |
| 1778 | { |
| 1779 | /* Truncate, then sign extend the value. */ |
| 1780 | int temp = (ex.X_add_number >> 16) & 0xffff; |
| 1781 | |
| 1782 | temp += (ex.X_add_number >> 15) & 1; |
| 1783 | |
| 1784 | ex.X_add_number = SEXT16 (temp); |
| 1785 | break; |
| 1786 | } |
| 1787 | |
| 1788 | case BFD_RELOC_32: |
| 1789 | if ((operand->flags & V850E_IMMEDIATE32) == 0) |
| 1790 | { |
| 1791 | errmsg = _("immediate operand is too large"); |
| 1792 | goto error; |
| 1793 | } |
| 1794 | |
| 1795 | extra_data_after_insn = TRUE; |
| 1796 | extra_data_len = 4; |
| 1797 | extra_data = 0; |
| 1798 | break; |
| 1799 | |
| 1800 | default: |
| 1801 | fprintf (stderr, "reloc: %d\n", reloc); |
| 1802 | as_bad (_("AAARG -> unhandled constant reloc")); |
| 1803 | break; |
| 1804 | } |
| 1805 | |
| 1806 | if (fc > MAX_INSN_FIXUPS) |
| 1807 | as_fatal (_("too many fixups")); |
| 1808 | |
| 1809 | fixups[fc].exp = ex; |
| 1810 | fixups[fc].opindex = *opindex_ptr; |
| 1811 | fixups[fc].reloc = reloc; |
| 1812 | fc++; |
| 1813 | } |
| 1814 | else |
| 1815 | { |
| 1816 | if (reloc == BFD_RELOC_32) |
| 1817 | { |
| 1818 | if ((operand->flags & V850E_IMMEDIATE32) == 0) |
| 1819 | { |
| 1820 | errmsg = _("immediate operand is too large"); |
| 1821 | goto error; |
| 1822 | } |
| 1823 | |
| 1824 | extra_data_after_insn = TRUE; |
| 1825 | extra_data_len = 4; |
| 1826 | extra_data = ex.X_add_number; |
| 1827 | } |
| 1828 | |
| 1829 | if (fc > MAX_INSN_FIXUPS) |
| 1830 | as_fatal (_("too many fixups")); |
| 1831 | |
| 1832 | fixups[fc].exp = ex; |
| 1833 | fixups[fc].opindex = *opindex_ptr; |
| 1834 | fixups[fc].reloc = reloc; |
| 1835 | fc++; |
| 1836 | } |
| 1837 | } |
| 1838 | else |
| 1839 | { |
| 1840 | errmsg = NULL; |
| 1841 | |
| 1842 | if ((operand->flags & V850_OPERAND_REG) != 0) |
| 1843 | { |
| 1844 | if (!register_name (&ex)) |
| 1845 | { |
| 1846 | errmsg = _("invalid register name"); |
| 1847 | } |
| 1848 | else if ((operand->flags & V850_NOT_R0) |
| 1849 | && ex.X_add_number == 0) |
| 1850 | { |
| 1851 | errmsg = _("register r0 cannot be used here"); |
| 1852 | |
| 1853 | /* Force an error message to be generated by |
| 1854 | skipping over any following potential matches |
| 1855 | for this opcode. */ |
| 1856 | opcode += 3; |
| 1857 | } |
| 1858 | } |
| 1859 | else if ((operand->flags & V850_OPERAND_SRG) != 0) |
| 1860 | { |
| 1861 | if (!system_register_name (&ex, TRUE, FALSE)) |
| 1862 | { |
| 1863 | errmsg = _("invalid system register name"); |
| 1864 | } |
| 1865 | } |
| 1866 | else if ((operand->flags & V850_OPERAND_EP) != 0) |
| 1867 | { |
| 1868 | char *start = input_line_pointer; |
| 1869 | char c = get_symbol_end (); |
| 1870 | |
| 1871 | if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0) |
| 1872 | { |
| 1873 | /* Put things back the way we found them. */ |
| 1874 | *input_line_pointer = c; |
| 1875 | input_line_pointer = start; |
| 1876 | errmsg = _("expected EP register"); |
| 1877 | goto error; |
| 1878 | } |
| 1879 | |
| 1880 | *input_line_pointer = c; |
| 1881 | str = input_line_pointer; |
| 1882 | input_line_pointer = hold; |
| 1883 | |
| 1884 | while (*str == ' ' || *str == ',' |
| 1885 | || *str == '[' || *str == ']') |
| 1886 | ++str; |
| 1887 | continue; |
| 1888 | } |
| 1889 | else if ((operand->flags & V850_OPERAND_CC) != 0) |
| 1890 | { |
| 1891 | if (!cc_name (&ex)) |
| 1892 | { |
| 1893 | errmsg = _("invalid condition code name"); |
| 1894 | } |
| 1895 | } |
| 1896 | else if (operand->flags & V850E_PUSH_POP) |
| 1897 | { |
| 1898 | errmsg = parse_register_list (&insn, operand); |
| 1899 | |
| 1900 | /* The parse_register_list() function has already done |
| 1901 | everything, so fake a dummy expression. */ |
| 1902 | ex.X_op = O_constant; |
| 1903 | ex.X_add_number = 0; |
| 1904 | } |
| 1905 | else if (operand->flags & V850E_IMMEDIATE16) |
| 1906 | { |
| 1907 | expression (&ex); |
| 1908 | |
| 1909 | if (ex.X_op != O_constant) |
| 1910 | errmsg = _("constant expression expected"); |
| 1911 | else if (ex.X_add_number & 0xffff0000) |
| 1912 | { |
| 1913 | if (ex.X_add_number & 0xffff) |
| 1914 | errmsg = _("constant too big to fit into instruction"); |
| 1915 | else if ((insn & 0x001fffc0) == 0x00130780) |
| 1916 | ex.X_add_number >>= 16; |
| 1917 | else |
| 1918 | errmsg = _("constant too big to fit into instruction"); |
| 1919 | } |
| 1920 | |
| 1921 | extra_data_after_insn = TRUE; |
| 1922 | extra_data_len = 2; |
| 1923 | extra_data = ex.X_add_number; |
| 1924 | ex.X_add_number = 0; |
| 1925 | } |
| 1926 | else if (operand->flags & V850E_IMMEDIATE32) |
| 1927 | { |
| 1928 | expression (&ex); |
| 1929 | |
| 1930 | if (ex.X_op != O_constant) |
| 1931 | errmsg = _("constant expression expected"); |
| 1932 | |
| 1933 | extra_data_after_insn = TRUE; |
| 1934 | extra_data_len = 4; |
| 1935 | extra_data = ex.X_add_number; |
| 1936 | ex.X_add_number = 0; |
| 1937 | } |
| 1938 | else if (register_name (&ex) |
| 1939 | && (operand->flags & V850_OPERAND_REG) == 0) |
| 1940 | { |
| 1941 | char c; |
| 1942 | int exists = 0; |
| 1943 | |
| 1944 | /* It is possible that an alias has been defined that |
| 1945 | matches a register name. For example the code may |
| 1946 | include a ".set ZERO, 0" directive, which matches |
| 1947 | the register name "zero". Attempt to reparse the |
| 1948 | field as an expression, and only complain if we |
| 1949 | cannot generate a constant. */ |
| 1950 | |
| 1951 | input_line_pointer = str; |
| 1952 | |
| 1953 | c = get_symbol_end (); |
| 1954 | |
| 1955 | if (symbol_find (str) != NULL) |
| 1956 | exists = 1; |
| 1957 | |
| 1958 | *input_line_pointer = c; |
| 1959 | input_line_pointer = str; |
| 1960 | |
| 1961 | expression (&ex); |
| 1962 | |
| 1963 | if (ex.X_op != O_constant) |
| 1964 | { |
| 1965 | /* If this register is actually occuring too early on |
| 1966 | the parsing of the instruction, (because another |
| 1967 | field is missing) then report this. */ |
| 1968 | if (opindex_ptr[1] != 0 |
| 1969 | && (v850_operands[opindex_ptr[1]].flags |
| 1970 | & V850_OPERAND_REG)) |
| 1971 | errmsg = _("syntax error: value is missing before the register name"); |
| 1972 | else |
| 1973 | errmsg = _("syntax error: register not expected"); |
| 1974 | |
| 1975 | /* If we created a symbol in the process of this |
| 1976 | test then delete it now, so that it will not |
| 1977 | be output with the real symbols... */ |
| 1978 | if (exists == 0 |
| 1979 | && ex.X_op == O_symbol) |
| 1980 | symbol_remove (ex.X_add_symbol, |
| 1981 | &symbol_rootP, &symbol_lastP); |
| 1982 | } |
| 1983 | } |
| 1984 | else if (system_register_name (&ex, FALSE, FALSE) |
| 1985 | && (operand->flags & V850_OPERAND_SRG) == 0) |
| 1986 | { |
| 1987 | errmsg = _("syntax error: system register not expected"); |
| 1988 | } |
| 1989 | else if (cc_name (&ex) |
| 1990 | && (operand->flags & V850_OPERAND_CC) == 0) |
| 1991 | { |
| 1992 | errmsg = _("syntax error: condition code not expected"); |
| 1993 | } |
| 1994 | else |
| 1995 | { |
| 1996 | expression (&ex); |
| 1997 | /* Special case: |
| 1998 | If we are assembling a MOV instruction and the immediate |
| 1999 | value does not fit into the bits available then create a |
| 2000 | fake error so that the next MOV instruction will be |
| 2001 | selected. This one has a 32 bit immediate field. */ |
| 2002 | |
| 2003 | if (((insn & 0x07e0) == 0x0200) |
| 2004 | && operand->bits == 5 /* Do not match the CALLT instruction. */ |
| 2005 | && ex.X_op == O_constant |
| 2006 | && (ex.X_add_number < (-(1 << (operand->bits - 1))) |
| 2007 | || ex.X_add_number > ((1 << (operand->bits - 1)) - 1))) |
| 2008 | errmsg = _("immediate operand is too large"); |
| 2009 | } |
| 2010 | |
| 2011 | if (errmsg) |
| 2012 | goto error; |
| 2013 | |
| 2014 | #if 0 |
| 2015 | fprintf (stderr, |
| 2016 | " insn: %x, operand %d, op: %d, add_number: %d\n", |
| 2017 | insn, opindex_ptr - opcode->operands, |
| 2018 | ex.X_op, ex.X_add_number); |
| 2019 | #endif |
| 2020 | |
| 2021 | switch (ex.X_op) |
| 2022 | { |
| 2023 | case O_illegal: |
| 2024 | errmsg = _("illegal operand"); |
| 2025 | goto error; |
| 2026 | case O_absent: |
| 2027 | errmsg = _("missing operand"); |
| 2028 | goto error; |
| 2029 | case O_register: |
| 2030 | if ((operand->flags |
| 2031 | & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0) |
| 2032 | { |
| 2033 | errmsg = _("invalid operand"); |
| 2034 | goto error; |
| 2035 | } |
| 2036 | insn = v850_insert_operand (insn, operand, ex.X_add_number, |
| 2037 | (char *) NULL, 0, |
| 2038 | copy_of_instruction); |
| 2039 | break; |
| 2040 | |
| 2041 | case O_constant: |
| 2042 | insn = v850_insert_operand (insn, operand, ex.X_add_number, |
| 2043 | (char *) NULL, 0, |
| 2044 | copy_of_instruction); |
| 2045 | break; |
| 2046 | |
| 2047 | default: |
| 2048 | /* We need to generate a fixup for this expression. */ |
| 2049 | if (fc >= MAX_INSN_FIXUPS) |
| 2050 | as_fatal (_("too many fixups")); |
| 2051 | |
| 2052 | fixups[fc].exp = ex; |
| 2053 | fixups[fc].opindex = *opindex_ptr; |
| 2054 | fixups[fc].reloc = BFD_RELOC_UNUSED; |
| 2055 | ++fc; |
| 2056 | break; |
| 2057 | } |
| 2058 | } |
| 2059 | |
| 2060 | str = input_line_pointer; |
| 2061 | input_line_pointer = hold; |
| 2062 | |
| 2063 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']' |
| 2064 | || *str == ')') |
| 2065 | ++str; |
| 2066 | } |
| 2067 | match = 1; |
| 2068 | |
| 2069 | error: |
| 2070 | if (match == 0) |
| 2071 | { |
| 2072 | next_opcode = opcode + 1; |
| 2073 | if (next_opcode->name != NULL |
| 2074 | && strcmp (next_opcode->name, opcode->name) == 0) |
| 2075 | { |
| 2076 | opcode = next_opcode; |
| 2077 | |
| 2078 | /* Skip versions that are not supported by the target |
| 2079 | processor. */ |
| 2080 | if ((opcode->processors & processor_mask) == 0) |
| 2081 | goto error; |
| 2082 | |
| 2083 | continue; |
| 2084 | } |
| 2085 | |
| 2086 | as_bad ("%s: %s", copy_of_instruction, errmsg); |
| 2087 | |
| 2088 | if (*input_line_pointer == ']') |
| 2089 | ++input_line_pointer; |
| 2090 | |
| 2091 | ignore_rest_of_line (); |
| 2092 | input_line_pointer = saved_input_line_pointer; |
| 2093 | return; |
| 2094 | } |
| 2095 | break; |
| 2096 | } |
| 2097 | |
| 2098 | while (ISSPACE (*str)) |
| 2099 | ++str; |
| 2100 | |
| 2101 | if (*str != '\0') |
| 2102 | /* xgettext:c-format */ |
| 2103 | as_bad (_("junk at end of line: `%s'"), str); |
| 2104 | |
| 2105 | input_line_pointer = str; |
| 2106 | |
| 2107 | /* Tie dwarf2 debug info to the address at the start of the insn. |
| 2108 | We can't do this after the insn has been output as the current |
| 2109 | frag may have been closed off. eg. by frag_var. */ |
| 2110 | dwarf2_emit_insn (0); |
| 2111 | |
| 2112 | /* Write out the instruction. */ |
| 2113 | |
| 2114 | if (relaxable && fc > 0) |
| 2115 | { |
| 2116 | insn_size = 2; |
| 2117 | fc = 0; |
| 2118 | |
| 2119 | if (!strcmp (opcode->name, "br")) |
| 2120 | { |
| 2121 | f = frag_var (rs_machine_dependent, 4, 2, 2, |
| 2122 | fixups[0].exp.X_add_symbol, |
| 2123 | fixups[0].exp.X_add_number, |
| 2124 | (char *) fixups[0].opindex); |
| 2125 | md_number_to_chars (f, insn, insn_size); |
| 2126 | md_number_to_chars (f + 2, 0, 2); |
| 2127 | } |
| 2128 | else |
| 2129 | { |
| 2130 | f = frag_var (rs_machine_dependent, 6, 4, 0, |
| 2131 | fixups[0].exp.X_add_symbol, |
| 2132 | fixups[0].exp.X_add_number, |
| 2133 | (char *) fixups[0].opindex); |
| 2134 | md_number_to_chars (f, insn, insn_size); |
| 2135 | md_number_to_chars (f + 2, 0, 4); |
| 2136 | } |
| 2137 | } |
| 2138 | else |
| 2139 | { |
| 2140 | /* Four byte insns have an opcode with the two high bits on. */ |
| 2141 | if ((insn & 0x0600) == 0x0600) |
| 2142 | insn_size = 4; |
| 2143 | else |
| 2144 | insn_size = 2; |
| 2145 | |
| 2146 | /* Special case: 32 bit MOV. */ |
| 2147 | if ((insn & 0xffe0) == 0x0620) |
| 2148 | insn_size = 2; |
| 2149 | |
| 2150 | f = frag_more (insn_size); |
| 2151 | md_number_to_chars (f, insn, insn_size); |
| 2152 | |
| 2153 | if (extra_data_after_insn) |
| 2154 | { |
| 2155 | f = frag_more (extra_data_len); |
| 2156 | md_number_to_chars (f, extra_data, extra_data_len); |
| 2157 | |
| 2158 | extra_data_after_insn = FALSE; |
| 2159 | } |
| 2160 | } |
| 2161 | |
| 2162 | /* Create any fixups. At this point we do not use a |
| 2163 | bfd_reloc_code_real_type, but instead just use the |
| 2164 | BFD_RELOC_UNUSED plus the operand index. This lets us easily |
| 2165 | handle fixups for any operand type, although that is admittedly |
| 2166 | not a very exciting feature. We pick a BFD reloc type in |
| 2167 | md_apply_fix3. */ |
| 2168 | for (i = 0; i < fc; i++) |
| 2169 | { |
| 2170 | const struct v850_operand *operand; |
| 2171 | bfd_reloc_code_real_type reloc; |
| 2172 | |
| 2173 | operand = &v850_operands[fixups[i].opindex]; |
| 2174 | |
| 2175 | reloc = fixups[i].reloc; |
| 2176 | |
| 2177 | if (reloc != BFD_RELOC_UNUSED) |
| 2178 | { |
| 2179 | reloc_howto_type *reloc_howto = |
| 2180 | bfd_reloc_type_lookup (stdoutput, reloc); |
| 2181 | int size; |
| 2182 | int address; |
| 2183 | fixS *fixP; |
| 2184 | |
| 2185 | if (!reloc_howto) |
| 2186 | abort (); |
| 2187 | |
| 2188 | size = bfd_get_reloc_size (reloc_howto); |
| 2189 | |
| 2190 | /* XXX This will abort on an R_V850_8 reloc - |
| 2191 | is this reloc actually used? */ |
| 2192 | if (size != 2 && size != 4) |
| 2193 | abort (); |
| 2194 | |
| 2195 | address = (f - frag_now->fr_literal) + insn_size - size; |
| 2196 | |
| 2197 | if (reloc == BFD_RELOC_32) |
| 2198 | address += 2; |
| 2199 | |
| 2200 | fixP = fix_new_exp (frag_now, address, size, |
| 2201 | &fixups[i].exp, |
| 2202 | reloc_howto->pc_relative, |
| 2203 | reloc); |
| 2204 | |
| 2205 | switch (reloc) |
| 2206 | { |
| 2207 | case BFD_RELOC_LO16: |
| 2208 | case BFD_RELOC_HI16: |
| 2209 | case BFD_RELOC_HI16_S: |
| 2210 | fixP->fx_no_overflow = 1; |
| 2211 | break; |
| 2212 | default: |
| 2213 | break; |
| 2214 | } |
| 2215 | } |
| 2216 | else |
| 2217 | { |
| 2218 | fix_new_exp (frag_now, |
| 2219 | f - frag_now->fr_literal, 4, |
| 2220 | & fixups[i].exp, |
| 2221 | 1 /* FIXME: V850_OPERAND_RELATIVE ??? */, |
| 2222 | (bfd_reloc_code_real_type) (fixups[i].opindex |
| 2223 | + (int) BFD_RELOC_UNUSED)); |
| 2224 | } |
| 2225 | } |
| 2226 | |
| 2227 | input_line_pointer = saved_input_line_pointer; |
| 2228 | } |
| 2229 | |
| 2230 | /* If while processing a fixup, a reloc really needs to be created |
| 2231 | then it is done here. */ |
| 2232 | |
| 2233 | arelent * |
| 2234 | tc_gen_reloc (seg, fixp) |
| 2235 | asection *seg ATTRIBUTE_UNUSED; |
| 2236 | fixS *fixp; |
| 2237 | { |
| 2238 | arelent *reloc; |
| 2239 | |
| 2240 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
| 2241 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 2242 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 2243 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2244 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 2245 | |
| 2246 | if (reloc->howto == (reloc_howto_type *) NULL) |
| 2247 | { |
| 2248 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 2249 | /* xgettext:c-format */ |
| 2250 | _("reloc %d not supported by object file format"), |
| 2251 | (int) fixp->fx_r_type); |
| 2252 | |
| 2253 | xfree (reloc); |
| 2254 | |
| 2255 | return NULL; |
| 2256 | } |
| 2257 | |
| 2258 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
| 2259 | || fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT) |
| 2260 | reloc->addend = fixp->fx_offset; |
| 2261 | else if ( fixp->fx_r_type == BFD_RELOC_V850_LONGCALL |
| 2262 | || fixp->fx_r_type == BFD_RELOC_V850_LONGJUMP |
| 2263 | || fixp->fx_r_type == BFD_RELOC_V850_ALIGN) |
| 2264 | reloc->addend = fixp->fx_offset; |
| 2265 | else |
| 2266 | reloc->addend = fixp->fx_addnumber; |
| 2267 | |
| 2268 | return reloc; |
| 2269 | } |
| 2270 | |
| 2271 | void |
| 2272 | v850_handle_align (frag) |
| 2273 | fragS * frag; |
| 2274 | { |
| 2275 | if (v850_relax |
| 2276 | && frag->fr_type == rs_align |
| 2277 | && frag->fr_address + frag->fr_fix > 0 |
| 2278 | && frag->fr_offset > 1 |
| 2279 | && now_seg != bss_section |
| 2280 | && now_seg != v850_seg_table[SBSS_SECTION].s |
| 2281 | && now_seg != v850_seg_table[TBSS_SECTION].s |
| 2282 | && now_seg != v850_seg_table[ZBSS_SECTION].s) |
| 2283 | fix_new (frag, frag->fr_fix, 2, & abs_symbol, frag->fr_offset, 0, |
| 2284 | BFD_RELOC_V850_ALIGN); |
| 2285 | } |
| 2286 | |
| 2287 | /* Return current size of variable part of frag. */ |
| 2288 | |
| 2289 | int |
| 2290 | md_estimate_size_before_relax (fragp, seg) |
| 2291 | fragS *fragp; |
| 2292 | asection *seg ATTRIBUTE_UNUSED; |
| 2293 | { |
| 2294 | if (fragp->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0])) |
| 2295 | abort (); |
| 2296 | |
| 2297 | return md_relax_table[fragp->fr_subtype].rlx_length; |
| 2298 | } |
| 2299 | |
| 2300 | long |
| 2301 | v850_pcrel_from_section (fixp, section) |
| 2302 | fixS *fixp; |
| 2303 | segT section; |
| 2304 | { |
| 2305 | /* If the symbol is undefined, or in a section other than our own, |
| 2306 | or it is weak (in which case it may well be in another section, |
| 2307 | then let the linker figure it out. */ |
| 2308 | if (fixp->fx_addsy != (symbolS *) NULL |
| 2309 | && (! S_IS_DEFINED (fixp->fx_addsy) |
| 2310 | || S_IS_WEAK (fixp->fx_addsy) |
| 2311 | || (S_GET_SEGMENT (fixp->fx_addsy) != section))) |
| 2312 | return 0; |
| 2313 | |
| 2314 | return fixp->fx_frag->fr_address + fixp->fx_where; |
| 2315 | } |
| 2316 | |
| 2317 | void |
| 2318 | md_apply_fix3 (fixP, valueP, seg) |
| 2319 | fixS *fixP; |
| 2320 | valueT *valueP; |
| 2321 | segT seg ATTRIBUTE_UNUSED; |
| 2322 | { |
| 2323 | valueT value = * valueP; |
| 2324 | char *where; |
| 2325 | |
| 2326 | if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 2327 | || fixP->fx_r_type == BFD_RELOC_V850_LONGCALL |
| 2328 | || fixP->fx_r_type == BFD_RELOC_V850_LONGJUMP |
| 2329 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 2330 | { |
| 2331 | fixP->fx_done = 0; |
| 2332 | return; |
| 2333 | } |
| 2334 | |
| 2335 | if (fixP->fx_addsy == (symbolS *) NULL) |
| 2336 | fixP->fx_addnumber = value, |
| 2337 | fixP->fx_done = 1; |
| 2338 | |
| 2339 | else if (fixP->fx_pcrel) |
| 2340 | fixP->fx_addnumber = fixP->fx_offset; |
| 2341 | |
| 2342 | else |
| 2343 | { |
| 2344 | value = fixP->fx_offset; |
| 2345 | if (fixP->fx_subsy != (symbolS *) NULL) |
| 2346 | { |
| 2347 | if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section) |
| 2348 | value -= S_GET_VALUE (fixP->fx_subsy); |
| 2349 | else |
| 2350 | { |
| 2351 | /* We don't actually support subtracting a symbol. */ |
| 2352 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2353 | _("expression too complex")); |
| 2354 | } |
| 2355 | } |
| 2356 | fixP->fx_addnumber = value; |
| 2357 | } |
| 2358 | |
| 2359 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) |
| 2360 | { |
| 2361 | int opindex; |
| 2362 | const struct v850_operand *operand; |
| 2363 | unsigned long insn; |
| 2364 | |
| 2365 | opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; |
| 2366 | operand = &v850_operands[opindex]; |
| 2367 | |
| 2368 | /* Fetch the instruction, insert the fully resolved operand |
| 2369 | value, and stuff the instruction back again. |
| 2370 | |
| 2371 | Note the instruction has been stored in little endian |
| 2372 | format! */ |
| 2373 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 2374 | |
| 2375 | insn = bfd_getl32 ((unsigned char *) where); |
| 2376 | insn = v850_insert_operand (insn, operand, (offsetT) value, |
| 2377 | fixP->fx_file, fixP->fx_line, NULL); |
| 2378 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); |
| 2379 | |
| 2380 | if (fixP->fx_done) |
| 2381 | /* Nothing else to do here. */ |
| 2382 | return; |
| 2383 | |
| 2384 | /* Determine a BFD reloc value based on the operand information. |
| 2385 | We are only prepared to turn a few of the operands into relocs. */ |
| 2386 | |
| 2387 | if (operand->bits == 22) |
| 2388 | fixP->fx_r_type = BFD_RELOC_V850_22_PCREL; |
| 2389 | else if (operand->bits == 9) |
| 2390 | fixP->fx_r_type = BFD_RELOC_V850_9_PCREL; |
| 2391 | else |
| 2392 | { |
| 2393 | #if 0 |
| 2394 | fprintf (stderr, "bits: %d, insn: %x\n", operand->bits, insn); |
| 2395 | #endif |
| 2396 | |
| 2397 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2398 | _("unresolved expression that must be resolved")); |
| 2399 | fixP->fx_done = 1; |
| 2400 | return; |
| 2401 | } |
| 2402 | } |
| 2403 | else if (fixP->fx_done) |
| 2404 | { |
| 2405 | /* We still have to insert the value into memory! */ |
| 2406 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 2407 | |
| 2408 | if (fixP->fx_size == 1) |
| 2409 | *where = value & 0xff; |
| 2410 | else if (fixP->fx_size == 2) |
| 2411 | bfd_putl16 (value & 0xffff, (unsigned char *) where); |
| 2412 | else if (fixP->fx_size == 4) |
| 2413 | bfd_putl32 (value, (unsigned char *) where); |
| 2414 | } |
| 2415 | } |
| 2416 | \f |
| 2417 | /* Parse a cons expression. We have to handle hi(), lo(), etc |
| 2418 | on the v850. */ |
| 2419 | |
| 2420 | void |
| 2421 | parse_cons_expression_v850 (exp) |
| 2422 | expressionS *exp; |
| 2423 | { |
| 2424 | /* See if there's a reloc prefix like hi() we have to handle. */ |
| 2425 | hold_cons_reloc = v850_reloc_prefix (NULL); |
| 2426 | |
| 2427 | /* Do normal expression parsing. */ |
| 2428 | expression (exp); |
| 2429 | } |
| 2430 | |
| 2431 | /* Create a fixup for a cons expression. If parse_cons_expression_v850 |
| 2432 | found a reloc prefix, then we use that reloc, else we choose an |
| 2433 | appropriate one based on the size of the expression. */ |
| 2434 | |
| 2435 | void |
| 2436 | cons_fix_new_v850 (frag, where, size, exp) |
| 2437 | fragS *frag; |
| 2438 | int where; |
| 2439 | int size; |
| 2440 | expressionS *exp; |
| 2441 | { |
| 2442 | if (hold_cons_reloc == BFD_RELOC_UNUSED) |
| 2443 | { |
| 2444 | if (size == 4) |
| 2445 | hold_cons_reloc = BFD_RELOC_32; |
| 2446 | if (size == 2) |
| 2447 | hold_cons_reloc = BFD_RELOC_16; |
| 2448 | if (size == 1) |
| 2449 | hold_cons_reloc = BFD_RELOC_8; |
| 2450 | } |
| 2451 | |
| 2452 | if (exp != NULL) |
| 2453 | fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc); |
| 2454 | else |
| 2455 | fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc); |
| 2456 | |
| 2457 | hold_cons_reloc = BFD_RELOC_UNUSED; |
| 2458 | } |
| 2459 | |
| 2460 | bfd_boolean |
| 2461 | v850_fix_adjustable (fixP) |
| 2462 | fixS *fixP; |
| 2463 | { |
| 2464 | if (fixP->fx_addsy == NULL) |
| 2465 | return 1; |
| 2466 | |
| 2467 | /* Don't adjust function names. */ |
| 2468 | if (S_IS_FUNCTION (fixP->fx_addsy)) |
| 2469 | return 0; |
| 2470 | |
| 2471 | /* We need the symbol name for the VTABLE entries. */ |
| 2472 | if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 2473 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 2474 | return 0; |
| 2475 | |
| 2476 | return 1; |
| 2477 | } |
| 2478 | |
| 2479 | int |
| 2480 | v850_force_relocation (fixP) |
| 2481 | struct fix *fixP; |
| 2482 | { |
| 2483 | if (fixP->fx_r_type == BFD_RELOC_V850_LONGCALL |
| 2484 | || fixP->fx_r_type == BFD_RELOC_V850_LONGJUMP) |
| 2485 | return 1; |
| 2486 | |
| 2487 | if (v850_relax |
| 2488 | && (fixP->fx_pcrel |
| 2489 | || fixP->fx_r_type == BFD_RELOC_V850_ALIGN |
| 2490 | || fixP->fx_r_type == BFD_RELOC_V850_22_PCREL |
| 2491 | || fixP->fx_r_type == BFD_RELOC_V850_9_PCREL |
| 2492 | || fixP->fx_r_type >= BFD_RELOC_UNUSED)) |
| 2493 | return 1; |
| 2494 | |
| 2495 | return generic_force_reloc (fixP); |
| 2496 | } |