| 1 | /* tc-v850.c -- Assembler code for the NEC V850 |
| 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
| 3 | 2006, 2007 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GAS, the GNU Assembler. |
| 6 | |
| 7 | GAS is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GAS; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "as.h" |
| 23 | #include "safe-ctype.h" |
| 24 | #include "subsegs.h" |
| 25 | #include "opcode/v850.h" |
| 26 | #include "dwarf2dbg.h" |
| 27 | |
| 28 | /* Sign-extend a 16-bit number. */ |
| 29 | #define SEXT16(x) ((((x) & 0xffff) ^ (~0x7fff)) + 0x8000) |
| 30 | |
| 31 | /* Temporarily holds the reloc in a cons expression. */ |
| 32 | static bfd_reloc_code_real_type hold_cons_reloc = BFD_RELOC_UNUSED; |
| 33 | |
| 34 | /* Set to TRUE if we want to be pedantic about signed overflows. */ |
| 35 | static bfd_boolean warn_signed_overflows = FALSE; |
| 36 | static bfd_boolean warn_unsigned_overflows = FALSE; |
| 37 | |
| 38 | /* Indicates the target BFD machine number. */ |
| 39 | static int machine = -1; |
| 40 | |
| 41 | /* Indicates the target processor(s) for the assemble. */ |
| 42 | static int processor_mask = -1; |
| 43 | \f |
| 44 | /* Structure to hold information about predefined registers. */ |
| 45 | struct reg_name |
| 46 | { |
| 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 | { |
| 74 | /* Conditional branches. */ |
| 75 | {0xff, -0x100, 2, 1}, |
| 76 | {0x1fffff, -0x200000, 6, 0}, |
| 77 | /* Unconditional branches. */ |
| 78 | {0xff, -0x100, 2, 3}, |
| 79 | {0x1fffff, -0x200000, 4, 0}, |
| 80 | }; |
| 81 | |
| 82 | static int v850_relax = 0; |
| 83 | |
| 84 | /* Fixups. */ |
| 85 | #define MAX_INSN_FIXUPS 5 |
| 86 | |
| 87 | struct v850_fixup |
| 88 | { |
| 89 | expressionS exp; |
| 90 | int opindex; |
| 91 | bfd_reloc_code_real_type reloc; |
| 92 | }; |
| 93 | |
| 94 | struct v850_fixup fixups[MAX_INSN_FIXUPS]; |
| 95 | static int fc; |
| 96 | |
| 97 | struct v850_seg_entry |
| 98 | { |
| 99 | segT s; |
| 100 | const char *name; |
| 101 | flagword flags; |
| 102 | }; |
| 103 | |
| 104 | struct v850_seg_entry v850_seg_table[] = |
| 105 | { |
| 106 | { NULL, ".sdata", |
| 107 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 108 | | SEC_SMALL_DATA }, |
| 109 | { NULL, ".tdata", |
| 110 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS }, |
| 111 | { NULL, ".zdata", |
| 112 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS }, |
| 113 | { NULL, ".sbss", |
| 114 | SEC_ALLOC | SEC_SMALL_DATA }, |
| 115 | { NULL, ".tbss", |
| 116 | SEC_ALLOC }, |
| 117 | { NULL, ".zbss", |
| 118 | SEC_ALLOC}, |
| 119 | { NULL, ".rosdata", |
| 120 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_DATA |
| 121 | | SEC_HAS_CONTENTS | SEC_SMALL_DATA }, |
| 122 | { NULL, ".rozdata", |
| 123 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_DATA |
| 124 | | SEC_HAS_CONTENTS }, |
| 125 | { NULL, ".scommon", |
| 126 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 127 | | SEC_SMALL_DATA | SEC_IS_COMMON }, |
| 128 | { NULL, ".tcommon", |
| 129 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 130 | | SEC_IS_COMMON }, |
| 131 | { NULL, ".zcommon", |
| 132 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS |
| 133 | | SEC_IS_COMMON }, |
| 134 | { NULL, ".call_table_data", |
| 135 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_DATA | SEC_HAS_CONTENTS }, |
| 136 | { NULL, ".call_table_text", |
| 137 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY | SEC_CODE |
| 138 | | SEC_HAS_CONTENTS}, |
| 139 | { NULL, ".bss", |
| 140 | SEC_ALLOC } |
| 141 | }; |
| 142 | |
| 143 | #define SDATA_SECTION 0 |
| 144 | #define TDATA_SECTION 1 |
| 145 | #define ZDATA_SECTION 2 |
| 146 | #define SBSS_SECTION 3 |
| 147 | #define TBSS_SECTION 4 |
| 148 | #define ZBSS_SECTION 5 |
| 149 | #define ROSDATA_SECTION 6 |
| 150 | #define ROZDATA_SECTION 7 |
| 151 | #define SCOMMON_SECTION 8 |
| 152 | #define TCOMMON_SECTION 9 |
| 153 | #define ZCOMMON_SECTION 10 |
| 154 | #define CALL_TABLE_DATA_SECTION 11 |
| 155 | #define CALL_TABLE_TEXT_SECTION 12 |
| 156 | #define BSS_SECTION 13 |
| 157 | |
| 158 | static void |
| 159 | do_v850_seg (int i, subsegT sub) |
| 160 | { |
| 161 | struct v850_seg_entry *seg = v850_seg_table + i; |
| 162 | |
| 163 | obj_elf_section_change_hook (); |
| 164 | |
| 165 | if (seg->s != NULL) |
| 166 | subseg_set (seg->s, sub); |
| 167 | else |
| 168 | { |
| 169 | seg->s = subseg_new (seg->name, sub); |
| 170 | bfd_set_section_flags (stdoutput, seg->s, seg->flags); |
| 171 | if ((seg->flags & SEC_LOAD) == 0) |
| 172 | seg_info (seg->s)->bss = 1; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | static void |
| 177 | v850_seg (int i) |
| 178 | { |
| 179 | subsegT sub = get_absolute_expression (); |
| 180 | |
| 181 | do_v850_seg (i, sub); |
| 182 | demand_empty_rest_of_line (); |
| 183 | } |
| 184 | |
| 185 | static void |
| 186 | v850_offset (int ignore ATTRIBUTE_UNUSED) |
| 187 | { |
| 188 | char *pfrag; |
| 189 | int temp = get_absolute_expression (); |
| 190 | |
| 191 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, (symbolS *)0, |
| 192 | (offsetT) temp, (char *) 0); |
| 193 | *pfrag = 0; |
| 194 | |
| 195 | demand_empty_rest_of_line (); |
| 196 | } |
| 197 | |
| 198 | /* Copied from obj_elf_common() in gas/config/obj-elf.c. */ |
| 199 | |
| 200 | static void |
| 201 | v850_comm (int area) |
| 202 | { |
| 203 | char *name; |
| 204 | char c; |
| 205 | char *p; |
| 206 | int temp; |
| 207 | unsigned int size; |
| 208 | symbolS *symbolP; |
| 209 | int have_align; |
| 210 | |
| 211 | name = input_line_pointer; |
| 212 | c = get_symbol_end (); |
| 213 | |
| 214 | /* Just after name is now '\0'. */ |
| 215 | p = input_line_pointer; |
| 216 | *p = c; |
| 217 | |
| 218 | SKIP_WHITESPACE (); |
| 219 | |
| 220 | if (*input_line_pointer != ',') |
| 221 | { |
| 222 | as_bad (_("Expected comma after symbol-name")); |
| 223 | ignore_rest_of_line (); |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | /* Skip ','. */ |
| 228 | input_line_pointer++; |
| 229 | |
| 230 | if ((temp = get_absolute_expression ()) < 0) |
| 231 | { |
| 232 | /* xgettext:c-format */ |
| 233 | as_bad (_(".COMMon length (%d.) < 0! Ignored."), temp); |
| 234 | ignore_rest_of_line (); |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | size = temp; |
| 239 | *p = 0; |
| 240 | symbolP = symbol_find_or_make (name); |
| 241 | *p = c; |
| 242 | |
| 243 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) |
| 244 | { |
| 245 | as_bad (_("Ignoring attempt to re-define symbol")); |
| 246 | ignore_rest_of_line (); |
| 247 | return; |
| 248 | } |
| 249 | |
| 250 | if (S_GET_VALUE (symbolP) != 0) |
| 251 | { |
| 252 | if (S_GET_VALUE (symbolP) != size) |
| 253 | /* xgettext:c-format */ |
| 254 | as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."), |
| 255 | S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); |
| 256 | } |
| 257 | |
| 258 | know (symbol_get_frag (symbolP) == &zero_address_frag); |
| 259 | |
| 260 | if (*input_line_pointer != ',') |
| 261 | have_align = 0; |
| 262 | else |
| 263 | { |
| 264 | have_align = 1; |
| 265 | input_line_pointer++; |
| 266 | SKIP_WHITESPACE (); |
| 267 | } |
| 268 | |
| 269 | if (! have_align || *input_line_pointer != '"') |
| 270 | { |
| 271 | if (! have_align) |
| 272 | temp = 0; |
| 273 | else |
| 274 | { |
| 275 | temp = get_absolute_expression (); |
| 276 | |
| 277 | if (temp < 0) |
| 278 | { |
| 279 | temp = 0; |
| 280 | as_warn (_("Common alignment negative; 0 assumed")); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | if (symbol_get_obj (symbolP)->local) |
| 285 | { |
| 286 | segT old_sec; |
| 287 | int old_subsec; |
| 288 | char *pfrag; |
| 289 | int align; |
| 290 | flagword applicable; |
| 291 | |
| 292 | old_sec = now_seg; |
| 293 | old_subsec = now_subseg; |
| 294 | |
| 295 | applicable = bfd_applicable_section_flags (stdoutput); |
| 296 | |
| 297 | applicable &= SEC_ALLOC; |
| 298 | |
| 299 | switch (area) |
| 300 | { |
| 301 | case SCOMMON_SECTION: |
| 302 | do_v850_seg (SBSS_SECTION, 0); |
| 303 | break; |
| 304 | |
| 305 | case ZCOMMON_SECTION: |
| 306 | do_v850_seg (ZBSS_SECTION, 0); |
| 307 | break; |
| 308 | |
| 309 | case TCOMMON_SECTION: |
| 310 | do_v850_seg (TBSS_SECTION, 0); |
| 311 | break; |
| 312 | } |
| 313 | |
| 314 | if (temp) |
| 315 | { |
| 316 | /* Convert to a power of 2 alignment. */ |
| 317 | for (align = 0; (temp & 1) == 0; temp >>= 1, ++align) |
| 318 | ; |
| 319 | |
| 320 | if (temp != 1) |
| 321 | { |
| 322 | as_bad (_("Common alignment not a power of 2")); |
| 323 | ignore_rest_of_line (); |
| 324 | return; |
| 325 | } |
| 326 | } |
| 327 | else |
| 328 | align = 0; |
| 329 | |
| 330 | record_alignment (now_seg, align); |
| 331 | |
| 332 | if (align) |
| 333 | frag_align (align, 0, 0); |
| 334 | |
| 335 | switch (area) |
| 336 | { |
| 337 | case SCOMMON_SECTION: |
| 338 | if (S_GET_SEGMENT (symbolP) == v850_seg_table[SBSS_SECTION].s) |
| 339 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 340 | break; |
| 341 | |
| 342 | case ZCOMMON_SECTION: |
| 343 | if (S_GET_SEGMENT (symbolP) == v850_seg_table[ZBSS_SECTION].s) |
| 344 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 345 | break; |
| 346 | |
| 347 | case TCOMMON_SECTION: |
| 348 | if (S_GET_SEGMENT (symbolP) == v850_seg_table[TBSS_SECTION].s) |
| 349 | symbol_get_frag (symbolP)->fr_symbol = 0; |
| 350 | break; |
| 351 | |
| 352 | default: |
| 353 | abort (); |
| 354 | } |
| 355 | |
| 356 | symbol_set_frag (symbolP, frag_now); |
| 357 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, |
| 358 | (offsetT) size, (char *) 0); |
| 359 | *pfrag = 0; |
| 360 | S_SET_SIZE (symbolP, size); |
| 361 | |
| 362 | switch (area) |
| 363 | { |
| 364 | case SCOMMON_SECTION: |
| 365 | S_SET_SEGMENT (symbolP, v850_seg_table[SBSS_SECTION].s); |
| 366 | break; |
| 367 | |
| 368 | case ZCOMMON_SECTION: |
| 369 | S_SET_SEGMENT (symbolP, v850_seg_table[ZBSS_SECTION].s); |
| 370 | break; |
| 371 | |
| 372 | case TCOMMON_SECTION: |
| 373 | S_SET_SEGMENT (symbolP, v850_seg_table[TBSS_SECTION].s); |
| 374 | break; |
| 375 | |
| 376 | default: |
| 377 | abort (); |
| 378 | } |
| 379 | |
| 380 | S_CLEAR_EXTERNAL (symbolP); |
| 381 | obj_elf_section_change_hook (); |
| 382 | subseg_set (old_sec, old_subsec); |
| 383 | } |
| 384 | else |
| 385 | { |
| 386 | segT old_sec; |
| 387 | int old_subsec; |
| 388 | |
| 389 | allocate_common: |
| 390 | old_sec = now_seg; |
| 391 | old_subsec = now_subseg; |
| 392 | |
| 393 | S_SET_VALUE (symbolP, (valueT) size); |
| 394 | S_SET_ALIGN (symbolP, temp); |
| 395 | S_SET_EXTERNAL (symbolP); |
| 396 | |
| 397 | switch (area) |
| 398 | { |
| 399 | case SCOMMON_SECTION: |
| 400 | case ZCOMMON_SECTION: |
| 401 | case TCOMMON_SECTION: |
| 402 | do_v850_seg (area, 0); |
| 403 | S_SET_SEGMENT (symbolP, v850_seg_table[area].s); |
| 404 | break; |
| 405 | |
| 406 | default: |
| 407 | abort (); |
| 408 | } |
| 409 | |
| 410 | obj_elf_section_change_hook (); |
| 411 | subseg_set (old_sec, old_subsec); |
| 412 | } |
| 413 | } |
| 414 | else |
| 415 | { |
| 416 | input_line_pointer++; |
| 417 | |
| 418 | /* @@ Some use the dot, some don't. Can we get some consistency?? */ |
| 419 | if (*input_line_pointer == '.') |
| 420 | input_line_pointer++; |
| 421 | |
| 422 | /* @@ Some say data, some say bss. */ |
| 423 | if (strncmp (input_line_pointer, "bss\"", 4) |
| 424 | && strncmp (input_line_pointer, "data\"", 5)) |
| 425 | { |
| 426 | while (*--input_line_pointer != '"') |
| 427 | ; |
| 428 | input_line_pointer--; |
| 429 | goto bad_common_segment; |
| 430 | } |
| 431 | |
| 432 | while (*input_line_pointer++ != '"') |
| 433 | ; |
| 434 | |
| 435 | goto allocate_common; |
| 436 | } |
| 437 | |
| 438 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
| 439 | |
| 440 | demand_empty_rest_of_line (); |
| 441 | return; |
| 442 | |
| 443 | { |
| 444 | bad_common_segment: |
| 445 | p = input_line_pointer; |
| 446 | while (*p && *p != '\n') |
| 447 | p++; |
| 448 | c = *p; |
| 449 | *p = '\0'; |
| 450 | as_bad (_("bad .common segment %s"), input_line_pointer + 1); |
| 451 | *p = c; |
| 452 | input_line_pointer = p; |
| 453 | ignore_rest_of_line (); |
| 454 | return; |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | static void |
| 459 | set_machine (int number) |
| 460 | { |
| 461 | machine = number; |
| 462 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine); |
| 463 | |
| 464 | switch (machine) |
| 465 | { |
| 466 | case 0: processor_mask = PROCESSOR_V850; break; |
| 467 | case bfd_mach_v850e: processor_mask = PROCESSOR_V850E; break; |
| 468 | case bfd_mach_v850e1: processor_mask = PROCESSOR_V850E; break; |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | static void |
| 473 | v850_longcode (int type) |
| 474 | { |
| 475 | expressionS ex; |
| 476 | |
| 477 | if (! v850_relax) |
| 478 | { |
| 479 | if (type == 1) |
| 480 | as_warn (".longcall pseudo-op seen when not relaxing"); |
| 481 | else |
| 482 | as_warn (".longjump pseudo-op seen when not relaxing"); |
| 483 | } |
| 484 | |
| 485 | expression (&ex); |
| 486 | |
| 487 | if (ex.X_op != O_symbol || ex.X_add_number != 0) |
| 488 | { |
| 489 | as_bad ("bad .longcall format"); |
| 490 | ignore_rest_of_line (); |
| 491 | |
| 492 | return; |
| 493 | } |
| 494 | |
| 495 | if (type == 1) |
| 496 | fix_new_exp (frag_now, frag_now_fix (), 4, & ex, 1, |
| 497 | BFD_RELOC_V850_LONGCALL); |
| 498 | else |
| 499 | fix_new_exp (frag_now, frag_now_fix (), 4, & ex, 1, |
| 500 | BFD_RELOC_V850_LONGJUMP); |
| 501 | |
| 502 | demand_empty_rest_of_line (); |
| 503 | } |
| 504 | |
| 505 | /* The target specific pseudo-ops which we support. */ |
| 506 | const pseudo_typeS md_pseudo_table[] = |
| 507 | { |
| 508 | { "sdata", v850_seg, SDATA_SECTION }, |
| 509 | { "tdata", v850_seg, TDATA_SECTION }, |
| 510 | { "zdata", v850_seg, ZDATA_SECTION }, |
| 511 | { "sbss", v850_seg, SBSS_SECTION }, |
| 512 | { "tbss", v850_seg, TBSS_SECTION }, |
| 513 | { "zbss", v850_seg, ZBSS_SECTION }, |
| 514 | { "rosdata", v850_seg, ROSDATA_SECTION }, |
| 515 | { "rozdata", v850_seg, ROZDATA_SECTION }, |
| 516 | { "bss", v850_seg, BSS_SECTION }, |
| 517 | { "offset", v850_offset, 0 }, |
| 518 | { "word", cons, 4 }, |
| 519 | { "zcomm", v850_comm, ZCOMMON_SECTION }, |
| 520 | { "scomm", v850_comm, SCOMMON_SECTION }, |
| 521 | { "tcomm", v850_comm, TCOMMON_SECTION }, |
| 522 | { "v850", set_machine, 0 }, |
| 523 | { "call_table_data", v850_seg, CALL_TABLE_DATA_SECTION }, |
| 524 | { "call_table_text", v850_seg, CALL_TABLE_TEXT_SECTION }, |
| 525 | { "v850e", set_machine, bfd_mach_v850e }, |
| 526 | { "v850e1", set_machine, bfd_mach_v850e1 }, |
| 527 | { "longcall", v850_longcode, 1 }, |
| 528 | { "longjump", v850_longcode, 2 }, |
| 529 | { NULL, NULL, 0 } |
| 530 | }; |
| 531 | |
| 532 | /* Opcode hash table. */ |
| 533 | static struct hash_control *v850_hash; |
| 534 | |
| 535 | /* This table is sorted. Suitable for searching by a binary search. */ |
| 536 | static const struct reg_name pre_defined_registers[] = |
| 537 | { |
| 538 | { "ep", 30 }, /* ep - element ptr. */ |
| 539 | { "gp", 4 }, /* gp - global ptr. */ |
| 540 | { "hp", 2 }, /* hp - handler stack ptr. */ |
| 541 | { "lp", 31 }, /* lp - link ptr. */ |
| 542 | { "r0", 0 }, |
| 543 | { "r1", 1 }, |
| 544 | { "r10", 10 }, |
| 545 | { "r11", 11 }, |
| 546 | { "r12", 12 }, |
| 547 | { "r13", 13 }, |
| 548 | { "r14", 14 }, |
| 549 | { "r15", 15 }, |
| 550 | { "r16", 16 }, |
| 551 | { "r17", 17 }, |
| 552 | { "r18", 18 }, |
| 553 | { "r19", 19 }, |
| 554 | { "r2", 2 }, |
| 555 | { "r20", 20 }, |
| 556 | { "r21", 21 }, |
| 557 | { "r22", 22 }, |
| 558 | { "r23", 23 }, |
| 559 | { "r24", 24 }, |
| 560 | { "r25", 25 }, |
| 561 | { "r26", 26 }, |
| 562 | { "r27", 27 }, |
| 563 | { "r28", 28 }, |
| 564 | { "r29", 29 }, |
| 565 | { "r3", 3 }, |
| 566 | { "r30", 30 }, |
| 567 | { "r31", 31 }, |
| 568 | { "r4", 4 }, |
| 569 | { "r5", 5 }, |
| 570 | { "r6", 6 }, |
| 571 | { "r7", 7 }, |
| 572 | { "r8", 8 }, |
| 573 | { "r9", 9 }, |
| 574 | { "sp", 3 }, /* sp - stack ptr. */ |
| 575 | { "tp", 5 }, /* tp - text ptr. */ |
| 576 | { "zero", 0 }, |
| 577 | }; |
| 578 | |
| 579 | #define REG_NAME_CNT \ |
| 580 | (sizeof (pre_defined_registers) / sizeof (struct reg_name)) |
| 581 | |
| 582 | static const struct reg_name system_registers[] = |
| 583 | { |
| 584 | { "asid", 23 }, |
| 585 | { "bpc", 22 }, |
| 586 | { "bpav", 24 }, |
| 587 | { "bpam", 25 }, |
| 588 | { "bpdv", 26 }, |
| 589 | { "bpdm", 27 }, |
| 590 | { "ctbp", 20 }, |
| 591 | { "ctpc", 16 }, |
| 592 | { "ctpsw", 17 }, |
| 593 | { "dbpc", 18 }, |
| 594 | { "dbpsw", 19 }, |
| 595 | { "dir", 21 }, |
| 596 | { "ecr", 4 }, |
| 597 | { "eipc", 0 }, |
| 598 | { "eipsw", 1 }, |
| 599 | { "fepc", 2 }, |
| 600 | { "fepsw", 3 }, |
| 601 | { "psw", 5 }, |
| 602 | }; |
| 603 | |
| 604 | #define SYSREG_NAME_CNT \ |
| 605 | (sizeof (system_registers) / sizeof (struct reg_name)) |
| 606 | |
| 607 | static const struct reg_name system_list_registers[] = |
| 608 | { |
| 609 | {"PS", 5 }, |
| 610 | {"SR", 0 + 1} |
| 611 | }; |
| 612 | |
| 613 | #define SYSREGLIST_NAME_CNT \ |
| 614 | (sizeof (system_list_registers) / sizeof (struct reg_name)) |
| 615 | |
| 616 | static const struct reg_name cc_names[] = |
| 617 | { |
| 618 | { "c", 0x1 }, |
| 619 | { "e", 0x2 }, |
| 620 | { "ge", 0xe }, |
| 621 | { "gt", 0xf }, |
| 622 | { "h", 0xb }, |
| 623 | { "l", 0x1 }, |
| 624 | { "le", 0x7 }, |
| 625 | { "lt", 0x6 }, |
| 626 | { "n", 0x4 }, |
| 627 | { "nc", 0x9 }, |
| 628 | { "ne", 0xa }, |
| 629 | { "nh", 0x3 }, |
| 630 | { "nl", 0x9 }, |
| 631 | { "ns", 0xc }, |
| 632 | { "nv", 0x8 }, |
| 633 | { "nz", 0xa }, |
| 634 | { "p", 0xc }, |
| 635 | { "s", 0x4 }, |
| 636 | { "sa", 0xd }, |
| 637 | { "t", 0x5 }, |
| 638 | { "v", 0x0 }, |
| 639 | { "z", 0x2 }, |
| 640 | }; |
| 641 | |
| 642 | #define CC_NAME_CNT \ |
| 643 | (sizeof (cc_names) / sizeof (struct reg_name)) |
| 644 | |
| 645 | /* Do a binary search of the given register table to see if NAME is a |
| 646 | valid regiter name. Return the register number from the array on |
| 647 | success, or -1 on failure. */ |
| 648 | |
| 649 | static int |
| 650 | reg_name_search (const struct reg_name *regs, |
| 651 | int regcount, |
| 652 | const char *name, |
| 653 | bfd_boolean accept_numbers) |
| 654 | { |
| 655 | int middle, low, high; |
| 656 | int cmp; |
| 657 | symbolS *symbolP; |
| 658 | |
| 659 | /* If the register name is a symbol, then evaluate it. */ |
| 660 | if ((symbolP = symbol_find (name)) != NULL) |
| 661 | { |
| 662 | /* If the symbol is an alias for another name then use that. |
| 663 | If the symbol is an alias for a number, then return the number. */ |
| 664 | if (symbol_equated_p (symbolP)) |
| 665 | name |
| 666 | = S_GET_NAME (symbol_get_value_expression (symbolP)->X_add_symbol); |
| 667 | else if (accept_numbers) |
| 668 | { |
| 669 | int reg = S_GET_VALUE (symbolP); |
| 670 | |
| 671 | if (reg >= 0 && reg <= 31) |
| 672 | return reg; |
| 673 | } |
| 674 | |
| 675 | /* Otherwise drop through and try parsing name normally. */ |
| 676 | } |
| 677 | |
| 678 | low = 0; |
| 679 | high = regcount - 1; |
| 680 | |
| 681 | do |
| 682 | { |
| 683 | middle = (low + high) / 2; |
| 684 | cmp = strcasecmp (name, regs[middle].name); |
| 685 | if (cmp < 0) |
| 686 | high = middle - 1; |
| 687 | else if (cmp > 0) |
| 688 | low = middle + 1; |
| 689 | else |
| 690 | return regs[middle].value; |
| 691 | } |
| 692 | while (low <= high); |
| 693 | return -1; |
| 694 | } |
| 695 | |
| 696 | /* Summary of register_name(). |
| 697 | |
| 698 | in: Input_line_pointer points to 1st char of operand. |
| 699 | |
| 700 | out: An expressionS. |
| 701 | The operand may have been a register: in this case, X_op == O_register, |
| 702 | X_add_number is set to the register number, and truth is returned. |
| 703 | Input_line_pointer->(next non-blank) char after operand, or is in |
| 704 | its original state. */ |
| 705 | |
| 706 | static bfd_boolean |
| 707 | register_name (expressionS *expressionP) |
| 708 | { |
| 709 | int reg_number; |
| 710 | char *name; |
| 711 | char *start; |
| 712 | char c; |
| 713 | |
| 714 | /* Find the spelling of the operand. */ |
| 715 | start = name = input_line_pointer; |
| 716 | |
| 717 | c = get_symbol_end (); |
| 718 | |
| 719 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, |
| 720 | name, FALSE); |
| 721 | |
| 722 | /* Put back the delimiting char. */ |
| 723 | *input_line_pointer = c; |
| 724 | |
| 725 | /* Look to see if it's in the register table. */ |
| 726 | if (reg_number >= 0) |
| 727 | { |
| 728 | expressionP->X_op = O_register; |
| 729 | expressionP->X_add_number = reg_number; |
| 730 | |
| 731 | /* Make the rest nice. */ |
| 732 | expressionP->X_add_symbol = NULL; |
| 733 | expressionP->X_op_symbol = NULL; |
| 734 | |
| 735 | return TRUE; |
| 736 | } |
| 737 | else |
| 738 | { |
| 739 | /* Reset the line as if we had not done anything. */ |
| 740 | input_line_pointer = start; |
| 741 | |
| 742 | return FALSE; |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | /* Summary of system_register_name(). |
| 747 | |
| 748 | in: INPUT_LINE_POINTER points to 1st char of operand. |
| 749 | EXPRESSIONP points to an expression structure to be filled in. |
| 750 | ACCEPT_NUMBERS is true iff numerical register names may be used. |
| 751 | ACCEPT_LIST_NAMES is true iff the special names PS and SR may be |
| 752 | accepted. |
| 753 | |
| 754 | out: An expressionS structure in expressionP. |
| 755 | The operand may have been a register: in this case, X_op == O_register, |
| 756 | X_add_number is set to the register number, and truth is returned. |
| 757 | Input_line_pointer->(next non-blank) char after operand, or is in |
| 758 | its original state. */ |
| 759 | |
| 760 | static bfd_boolean |
| 761 | system_register_name (expressionS *expressionP, |
| 762 | bfd_boolean accept_numbers, |
| 763 | bfd_boolean accept_list_names) |
| 764 | { |
| 765 | int reg_number; |
| 766 | char *name; |
| 767 | char *start; |
| 768 | char c; |
| 769 | |
| 770 | /* Find the spelling of the operand. */ |
| 771 | start = name = input_line_pointer; |
| 772 | |
| 773 | c = get_symbol_end (); |
| 774 | reg_number = reg_name_search (system_registers, SYSREG_NAME_CNT, name, |
| 775 | accept_numbers); |
| 776 | |
| 777 | /* Put back the delimiting char. */ |
| 778 | *input_line_pointer = c; |
| 779 | |
| 780 | if (reg_number < 0 |
| 781 | && accept_numbers) |
| 782 | { |
| 783 | /* Reset input_line pointer. */ |
| 784 | input_line_pointer = start; |
| 785 | |
| 786 | if (ISDIGIT (*input_line_pointer)) |
| 787 | { |
| 788 | reg_number = strtol (input_line_pointer, &input_line_pointer, 10); |
| 789 | |
| 790 | /* Make sure that the register number is allowable. */ |
| 791 | if (reg_number < 0 |
| 792 | || (reg_number > 5 && reg_number < 16) |
| 793 | || reg_number > 27) |
| 794 | reg_number = -1; |
| 795 | } |
| 796 | else if (accept_list_names) |
| 797 | { |
| 798 | c = get_symbol_end (); |
| 799 | reg_number = reg_name_search (system_list_registers, |
| 800 | SYSREGLIST_NAME_CNT, name, FALSE); |
| 801 | |
| 802 | /* Put back the delimiting char. */ |
| 803 | *input_line_pointer = c; |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | /* Look to see if it's in the register table. */ |
| 808 | if (reg_number >= 0) |
| 809 | { |
| 810 | expressionP->X_op = O_register; |
| 811 | expressionP->X_add_number = reg_number; |
| 812 | |
| 813 | /* Make the rest nice. */ |
| 814 | expressionP->X_add_symbol = NULL; |
| 815 | expressionP->X_op_symbol = NULL; |
| 816 | |
| 817 | return TRUE; |
| 818 | } |
| 819 | else |
| 820 | { |
| 821 | /* Reset the line as if we had not done anything. */ |
| 822 | input_line_pointer = start; |
| 823 | |
| 824 | return FALSE; |
| 825 | } |
| 826 | } |
| 827 | |
| 828 | /* Summary of cc_name(). |
| 829 | |
| 830 | in: INPUT_LINE_POINTER points to 1st char of operand. |
| 831 | |
| 832 | out: An expressionS. |
| 833 | The operand may have been a register: in this case, X_op == O_register, |
| 834 | X_add_number is set to the register number, and truth is returned. |
| 835 | Input_line_pointer->(next non-blank) char after operand, or is in |
| 836 | its original state. */ |
| 837 | |
| 838 | static bfd_boolean |
| 839 | cc_name (expressionS *expressionP) |
| 840 | { |
| 841 | int reg_number; |
| 842 | char *name; |
| 843 | char *start; |
| 844 | char c; |
| 845 | |
| 846 | /* Find the spelling of the operand. */ |
| 847 | start = name = input_line_pointer; |
| 848 | |
| 849 | c = get_symbol_end (); |
| 850 | reg_number = reg_name_search (cc_names, CC_NAME_CNT, name, FALSE); |
| 851 | |
| 852 | /* Put back the delimiting char. */ |
| 853 | *input_line_pointer = c; |
| 854 | |
| 855 | /* Look to see if it's in the register table. */ |
| 856 | if (reg_number >= 0) |
| 857 | { |
| 858 | expressionP->X_op = O_constant; |
| 859 | expressionP->X_add_number = reg_number; |
| 860 | |
| 861 | /* Make the rest nice. */ |
| 862 | expressionP->X_add_symbol = NULL; |
| 863 | expressionP->X_op_symbol = NULL; |
| 864 | |
| 865 | return TRUE; |
| 866 | } |
| 867 | else |
| 868 | { |
| 869 | /* Reset the line as if we had not done anything. */ |
| 870 | input_line_pointer = start; |
| 871 | |
| 872 | return FALSE; |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | static void |
| 877 | skip_white_space (void) |
| 878 | { |
| 879 | while (*input_line_pointer == ' ' |
| 880 | || *input_line_pointer == '\t') |
| 881 | ++input_line_pointer; |
| 882 | } |
| 883 | |
| 884 | /* Summary of parse_register_list (). |
| 885 | |
| 886 | in: INPUT_LINE_POINTER points to 1st char of a list of registers. |
| 887 | INSN is the partially constructed instruction. |
| 888 | OPERAND is the operand being inserted. |
| 889 | |
| 890 | out: NULL if the parse completed successfully, otherwise a |
| 891 | pointer to an error message is returned. If the parse |
| 892 | completes the correct bit fields in the instruction |
| 893 | will be filled in. |
| 894 | |
| 895 | Parses register lists with the syntax: |
| 896 | |
| 897 | { rX } |
| 898 | { rX, rY } |
| 899 | { rX - rY } |
| 900 | { rX - rY, rZ } |
| 901 | etc |
| 902 | |
| 903 | and also parses constant expressions whoes bits indicate the |
| 904 | registers in the lists. The LSB in the expression refers to |
| 905 | the lowest numbered permissible register in the register list, |
| 906 | and so on upwards. System registers are considered to be very |
| 907 | high numbers. */ |
| 908 | |
| 909 | static char * |
| 910 | parse_register_list (unsigned long *insn, |
| 911 | const struct v850_operand *operand) |
| 912 | { |
| 913 | static int type1_regs[32] = |
| 914 | { |
| 915 | 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 916 | 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 |
| 917 | }; |
| 918 | static int type2_regs[32] = |
| 919 | { |
| 920 | 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 921 | 0, 0, 0, 0, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 |
| 922 | }; |
| 923 | static int type3_regs[32] = |
| 924 | { |
| 925 | 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 926 | 0, 0, 0, 0, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8 |
| 927 | }; |
| 928 | int *regs; |
| 929 | expressionS exp; |
| 930 | |
| 931 | /* Select a register array to parse. */ |
| 932 | switch (operand->shift) |
| 933 | { |
| 934 | case 0xffe00001: regs = type1_regs; break; |
| 935 | case 0xfff8000f: regs = type2_regs; break; |
| 936 | case 0xfff8001f: regs = type3_regs; break; |
| 937 | default: |
| 938 | as_bad (_("unknown operand shift: %x\n"), operand->shift); |
| 939 | return _("internal failure in parse_register_list"); |
| 940 | } |
| 941 | |
| 942 | skip_white_space (); |
| 943 | |
| 944 | /* If the expression starts with a curly brace it is a register list. |
| 945 | Otherwise it is a constant expression, whoes bits indicate which |
| 946 | registers are to be included in the list. */ |
| 947 | if (*input_line_pointer != '{') |
| 948 | { |
| 949 | int reg; |
| 950 | int i; |
| 951 | |
| 952 | expression (&exp); |
| 953 | |
| 954 | if (exp.X_op != O_constant) |
| 955 | return _("constant expression or register list expected"); |
| 956 | |
| 957 | if (regs == type1_regs) |
| 958 | { |
| 959 | if (exp.X_add_number & 0xFFFFF000) |
| 960 | return _("high bits set in register list expression"); |
| 961 | |
| 962 | for (reg = 20; reg < 32; reg++) |
| 963 | if (exp.X_add_number & (1 << (reg - 20))) |
| 964 | { |
| 965 | for (i = 0; i < 32; i++) |
| 966 | if (regs[i] == reg) |
| 967 | *insn |= (1 << i); |
| 968 | } |
| 969 | } |
| 970 | else if (regs == type2_regs) |
| 971 | { |
| 972 | if (exp.X_add_number & 0xFFFE0000) |
| 973 | return _("high bits set in register list expression"); |
| 974 | |
| 975 | for (reg = 1; reg < 16; reg++) |
| 976 | if (exp.X_add_number & (1 << (reg - 1))) |
| 977 | { |
| 978 | for (i = 0; i < 32; i++) |
| 979 | if (regs[i] == reg) |
| 980 | *insn |= (1 << i); |
| 981 | } |
| 982 | |
| 983 | if (exp.X_add_number & (1 << 15)) |
| 984 | *insn |= (1 << 3); |
| 985 | |
| 986 | if (exp.X_add_number & (1 << 16)) |
| 987 | *insn |= (1 << 19); |
| 988 | } |
| 989 | else /* regs == type3_regs */ |
| 990 | { |
| 991 | if (exp.X_add_number & 0xFFFE0000) |
| 992 | return _("high bits set in register list expression"); |
| 993 | |
| 994 | for (reg = 16; reg < 32; reg++) |
| 995 | if (exp.X_add_number & (1 << (reg - 16))) |
| 996 | { |
| 997 | for (i = 0; i < 32; i++) |
| 998 | if (regs[i] == reg) |
| 999 | *insn |= (1 << i); |
| 1000 | } |
| 1001 | |
| 1002 | if (exp.X_add_number & (1 << 16)) |
| 1003 | *insn |= (1 << 19); |
| 1004 | } |
| 1005 | |
| 1006 | return NULL; |
| 1007 | } |
| 1008 | |
| 1009 | input_line_pointer++; |
| 1010 | |
| 1011 | /* Parse the register list until a terminator (closing curly brace or |
| 1012 | new-line) is found. */ |
| 1013 | for (;;) |
| 1014 | { |
| 1015 | if (register_name (&exp)) |
| 1016 | { |
| 1017 | int i; |
| 1018 | |
| 1019 | /* Locate the given register in the list, and if it is there, |
| 1020 | insert the corresponding bit into the instruction. */ |
| 1021 | for (i = 0; i < 32; i++) |
| 1022 | { |
| 1023 | if (regs[i] == exp.X_add_number) |
| 1024 | { |
| 1025 | *insn |= (1 << i); |
| 1026 | break; |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | if (i == 32) |
| 1031 | return _("illegal register included in list"); |
| 1032 | } |
| 1033 | else if (system_register_name (&exp, TRUE, TRUE)) |
| 1034 | { |
| 1035 | if (regs == type1_regs) |
| 1036 | { |
| 1037 | return _("system registers cannot be included in list"); |
| 1038 | } |
| 1039 | else if (exp.X_add_number == 5) |
| 1040 | { |
| 1041 | if (regs == type2_regs) |
| 1042 | return _("PSW cannot be included in list"); |
| 1043 | else |
| 1044 | *insn |= 0x8; |
| 1045 | } |
| 1046 | else if (exp.X_add_number < 4) |
| 1047 | *insn |= 0x80000; |
| 1048 | else |
| 1049 | return _("High value system registers cannot be included in list"); |
| 1050 | } |
| 1051 | else if (*input_line_pointer == '}') |
| 1052 | { |
| 1053 | input_line_pointer++; |
| 1054 | break; |
| 1055 | } |
| 1056 | else if (*input_line_pointer == ',') |
| 1057 | { |
| 1058 | input_line_pointer++; |
| 1059 | continue; |
| 1060 | } |
| 1061 | else if (*input_line_pointer == '-') |
| 1062 | { |
| 1063 | /* We have encountered a range of registers: rX - rY. */ |
| 1064 | int j; |
| 1065 | expressionS exp2; |
| 1066 | |
| 1067 | /* Skip the dash. */ |
| 1068 | ++input_line_pointer; |
| 1069 | |
| 1070 | /* Get the second register in the range. */ |
| 1071 | if (! register_name (&exp2)) |
| 1072 | { |
| 1073 | return _("second register should follow dash in register list"); |
| 1074 | exp2.X_add_number = exp.X_add_number; |
| 1075 | } |
| 1076 | |
| 1077 | /* Add the rest of the registers in the range. */ |
| 1078 | for (j = exp.X_add_number + 1; j <= exp2.X_add_number; j++) |
| 1079 | { |
| 1080 | int i; |
| 1081 | |
| 1082 | /* Locate the given register in the list, and if it is there, |
| 1083 | insert the corresponding bit into the instruction. */ |
| 1084 | for (i = 0; i < 32; i++) |
| 1085 | { |
| 1086 | if (regs[i] == j) |
| 1087 | { |
| 1088 | *insn |= (1 << i); |
| 1089 | break; |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | if (i == 32) |
| 1094 | return _("illegal register included in list"); |
| 1095 | } |
| 1096 | } |
| 1097 | else |
| 1098 | break; |
| 1099 | |
| 1100 | skip_white_space (); |
| 1101 | } |
| 1102 | |
| 1103 | return NULL; |
| 1104 | } |
| 1105 | |
| 1106 | const char *md_shortopts = "m:"; |
| 1107 | |
| 1108 | struct option md_longopts[] = |
| 1109 | { |
| 1110 | {NULL, no_argument, NULL, 0} |
| 1111 | }; |
| 1112 | |
| 1113 | size_t md_longopts_size = sizeof (md_longopts); |
| 1114 | |
| 1115 | void |
| 1116 | md_show_usage (FILE *stream) |
| 1117 | { |
| 1118 | fprintf (stream, _(" V850 options:\n")); |
| 1119 | fprintf (stream, _(" -mwarn-signed-overflow Warn if signed immediate values overflow\n")); |
| 1120 | fprintf (stream, _(" -mwarn-unsigned-overflow Warn if unsigned immediate values overflow\n")); |
| 1121 | fprintf (stream, _(" -mv850 The code is targeted at the v850\n")); |
| 1122 | fprintf (stream, _(" -mv850e The code is targeted at the v850e\n")); |
| 1123 | fprintf (stream, _(" -mv850e1 The code is targeted at the v850e1\n")); |
| 1124 | fprintf (stream, _(" -mv850any The code is generic, despite any processor specific instructions\n")); |
| 1125 | fprintf (stream, _(" -mrelax Enable relaxation\n")); |
| 1126 | } |
| 1127 | |
| 1128 | int |
| 1129 | md_parse_option (int c, char *arg) |
| 1130 | { |
| 1131 | if (c != 'm') |
| 1132 | return 0; |
| 1133 | |
| 1134 | if (strcmp (arg, "warn-signed-overflow") == 0) |
| 1135 | warn_signed_overflows = TRUE; |
| 1136 | |
| 1137 | else if (strcmp (arg, "warn-unsigned-overflow") == 0) |
| 1138 | warn_unsigned_overflows = TRUE; |
| 1139 | |
| 1140 | else if (strcmp (arg, "v850") == 0) |
| 1141 | { |
| 1142 | machine = 0; |
| 1143 | processor_mask = PROCESSOR_V850; |
| 1144 | } |
| 1145 | else if (strcmp (arg, "v850e") == 0) |
| 1146 | { |
| 1147 | machine = bfd_mach_v850e; |
| 1148 | processor_mask = PROCESSOR_V850E; |
| 1149 | } |
| 1150 | else if (strcmp (arg, "v850e1") == 0) |
| 1151 | { |
| 1152 | machine = bfd_mach_v850e1; |
| 1153 | processor_mask = PROCESSOR_V850E1; |
| 1154 | } |
| 1155 | else if (strcmp (arg, "v850any") == 0) |
| 1156 | { |
| 1157 | /* Tell the world that this is for any v850 chip. */ |
| 1158 | machine = 0; |
| 1159 | |
| 1160 | /* But support instructions for the extended versions. */ |
| 1161 | processor_mask = PROCESSOR_V850E; |
| 1162 | processor_mask |= PROCESSOR_V850E1; |
| 1163 | } |
| 1164 | else if (strcmp (arg, "relax") == 0) |
| 1165 | v850_relax = 1; |
| 1166 | else |
| 1167 | return 0; |
| 1168 | |
| 1169 | return 1; |
| 1170 | } |
| 1171 | |
| 1172 | symbolS * |
| 1173 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
| 1174 | { |
| 1175 | return 0; |
| 1176 | } |
| 1177 | |
| 1178 | char * |
| 1179 | md_atof (int type, char *litp, int *sizep) |
| 1180 | { |
| 1181 | return ieee_md_atof (type, litp, sizep, FALSE); |
| 1182 | } |
| 1183 | |
| 1184 | /* Very gross. */ |
| 1185 | |
| 1186 | void |
| 1187 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, |
| 1188 | asection *sec, |
| 1189 | fragS *fragP) |
| 1190 | { |
| 1191 | /* This code performs some nasty type punning between the |
| 1192 | fr_opcode field of the frag structure (a char *) and the |
| 1193 | fx_r_type field of the fix structure (a bfd_reloc_code_real_type) |
| 1194 | On a 64bit host this causes problems because these two fields |
| 1195 | are not the same size, but since we know that we are only |
| 1196 | ever storing small integers in the fields, it is safe to use |
| 1197 | a union to convert between them. */ |
| 1198 | union u |
| 1199 | { |
| 1200 | bfd_reloc_code_real_type fx_r_type; |
| 1201 | char * fr_opcode; |
| 1202 | } |
| 1203 | opcode_converter; |
| 1204 | subseg_change (sec, 0); |
| 1205 | |
| 1206 | opcode_converter.fr_opcode = fragP->fr_opcode; |
| 1207 | |
| 1208 | /* In range conditional or unconditional branch. */ |
| 1209 | if (fragP->fr_subtype == 0 || fragP->fr_subtype == 2) |
| 1210 | { |
| 1211 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, |
| 1212 | fragP->fr_offset, 1, |
| 1213 | BFD_RELOC_UNUSED + opcode_converter.fx_r_type); |
| 1214 | fragP->fr_fix += 2; |
| 1215 | } |
| 1216 | /* Out of range conditional branch. Emit a branch around a jump. */ |
| 1217 | else if (fragP->fr_subtype == 1) |
| 1218 | { |
| 1219 | unsigned char *buffer = |
| 1220 | (unsigned char *) (fragP->fr_fix + fragP->fr_literal); |
| 1221 | |
| 1222 | /* Reverse the condition of the first branch. */ |
| 1223 | buffer[0] ^= 0x08; |
| 1224 | /* Mask off all the displacement bits. */ |
| 1225 | buffer[0] &= 0x8f; |
| 1226 | buffer[1] &= 0x07; |
| 1227 | /* Now set the displacement bits so that we branch |
| 1228 | around the unconditional branch. */ |
| 1229 | buffer[0] |= 0x30; |
| 1230 | |
| 1231 | /* Now create the unconditional branch + fixup to the final |
| 1232 | target. */ |
| 1233 | md_number_to_chars ((char *) buffer + 2, 0x00000780, 4); |
| 1234 | fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, |
| 1235 | fragP->fr_offset, 1, |
| 1236 | BFD_RELOC_UNUSED + opcode_converter.fx_r_type + 1); |
| 1237 | fragP->fr_fix += 6; |
| 1238 | } |
| 1239 | /* Out of range unconditional branch. Emit a jump. */ |
| 1240 | else if (fragP->fr_subtype == 3) |
| 1241 | { |
| 1242 | md_number_to_chars (fragP->fr_fix + fragP->fr_literal, 0x00000780, 4); |
| 1243 | fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, |
| 1244 | fragP->fr_offset, 1, |
| 1245 | BFD_RELOC_UNUSED + opcode_converter.fx_r_type + 1); |
| 1246 | fragP->fr_fix += 4; |
| 1247 | } |
| 1248 | else |
| 1249 | abort (); |
| 1250 | } |
| 1251 | |
| 1252 | valueT |
| 1253 | md_section_align (asection *seg, valueT addr) |
| 1254 | { |
| 1255 | int align = bfd_get_section_alignment (stdoutput, seg); |
| 1256 | return ((addr + (1 << align) - 1) & (-1 << align)); |
| 1257 | } |
| 1258 | |
| 1259 | void |
| 1260 | md_begin (void) |
| 1261 | { |
| 1262 | char *prev_name = ""; |
| 1263 | const struct v850_opcode *op; |
| 1264 | |
| 1265 | if (strncmp (TARGET_CPU, "v850e1", 6) == 0) |
| 1266 | { |
| 1267 | if (machine == -1) |
| 1268 | machine = bfd_mach_v850e1; |
| 1269 | |
| 1270 | if (processor_mask == -1) |
| 1271 | processor_mask = PROCESSOR_V850E1; |
| 1272 | } |
| 1273 | else if (strncmp (TARGET_CPU, "v850e", 5) == 0) |
| 1274 | { |
| 1275 | if (machine == -1) |
| 1276 | machine = bfd_mach_v850e; |
| 1277 | |
| 1278 | if (processor_mask == -1) |
| 1279 | processor_mask = PROCESSOR_V850E; |
| 1280 | } |
| 1281 | else if (strncmp (TARGET_CPU, "v850", 4) == 0) |
| 1282 | { |
| 1283 | if (machine == -1) |
| 1284 | machine = 0; |
| 1285 | |
| 1286 | if (processor_mask == -1) |
| 1287 | processor_mask = PROCESSOR_V850; |
| 1288 | } |
| 1289 | else |
| 1290 | /* xgettext:c-format */ |
| 1291 | as_bad (_("Unable to determine default target processor from string: %s"), |
| 1292 | TARGET_CPU); |
| 1293 | |
| 1294 | v850_hash = hash_new (); |
| 1295 | |
| 1296 | /* Insert unique names into hash table. The V850 instruction set |
| 1297 | has many identical opcode names that have different opcodes based |
| 1298 | on the operands. This hash table then provides a quick index to |
| 1299 | the first opcode with a particular name in the opcode table. */ |
| 1300 | op = v850_opcodes; |
| 1301 | while (op->name) |
| 1302 | { |
| 1303 | if (strcmp (prev_name, op->name)) |
| 1304 | { |
| 1305 | prev_name = (char *) op->name; |
| 1306 | hash_insert (v850_hash, op->name, (char *) op); |
| 1307 | } |
| 1308 | op++; |
| 1309 | } |
| 1310 | |
| 1311 | v850_seg_table[BSS_SECTION].s = bss_section; |
| 1312 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, machine); |
| 1313 | } |
| 1314 | |
| 1315 | static bfd_reloc_code_real_type |
| 1316 | handle_lo16 (const struct v850_operand *operand) |
| 1317 | { |
| 1318 | if (operand != NULL) |
| 1319 | { |
| 1320 | if (operand->bits == -1) |
| 1321 | return BFD_RELOC_V850_LO16_SPLIT_OFFSET; |
| 1322 | |
| 1323 | if (!(operand->bits == 16 && operand->shift == 16) |
| 1324 | && !(operand->bits == 15 && operand->shift == 17)) |
| 1325 | { |
| 1326 | as_bad (_("lo() relocation used on an instruction which does " |
| 1327 | "not support it")); |
| 1328 | return BFD_RELOC_64; /* Used to indicate an error condition. */ |
| 1329 | } |
| 1330 | } |
| 1331 | return BFD_RELOC_LO16; |
| 1332 | } |
| 1333 | |
| 1334 | static bfd_reloc_code_real_type |
| 1335 | handle_ctoff (const struct v850_operand *operand) |
| 1336 | { |
| 1337 | if (operand == NULL) |
| 1338 | return BFD_RELOC_V850_CALLT_16_16_OFFSET; |
| 1339 | |
| 1340 | if (operand->bits != 6 |
| 1341 | || operand->shift != 0) |
| 1342 | { |
| 1343 | as_bad (_("ctoff() relocation used on an instruction which does not support it")); |
| 1344 | return BFD_RELOC_64; /* Used to indicate an error condition. */ |
| 1345 | } |
| 1346 | |
| 1347 | return BFD_RELOC_V850_CALLT_6_7_OFFSET; |
| 1348 | } |
| 1349 | |
| 1350 | static bfd_reloc_code_real_type |
| 1351 | handle_sdaoff (const struct v850_operand *operand) |
| 1352 | { |
| 1353 | if (operand == NULL) |
| 1354 | return BFD_RELOC_V850_SDA_16_16_OFFSET; |
| 1355 | |
| 1356 | if (operand->bits == 15 && operand->shift == 17) |
| 1357 | return BFD_RELOC_V850_SDA_15_16_OFFSET; |
| 1358 | |
| 1359 | if (operand->bits == -1) |
| 1360 | return BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET; |
| 1361 | |
| 1362 | if (operand->bits != 16 |
| 1363 | || operand->shift != 16) |
| 1364 | { |
| 1365 | as_bad (_("sdaoff() relocation used on an instruction which does not support it")); |
| 1366 | return BFD_RELOC_64; /* Used to indicate an error condition. */ |
| 1367 | } |
| 1368 | |
| 1369 | return BFD_RELOC_V850_SDA_16_16_OFFSET; |
| 1370 | } |
| 1371 | |
| 1372 | static bfd_reloc_code_real_type |
| 1373 | handle_zdaoff (const struct v850_operand *operand) |
| 1374 | { |
| 1375 | if (operand == NULL) |
| 1376 | return BFD_RELOC_V850_ZDA_16_16_OFFSET; |
| 1377 | |
| 1378 | if (operand->bits == 15 && operand->shift == 17) |
| 1379 | return BFD_RELOC_V850_ZDA_15_16_OFFSET; |
| 1380 | |
| 1381 | if (operand->bits == -1) |
| 1382 | return BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET; |
| 1383 | |
| 1384 | if (operand->bits != 16 |
| 1385 | || operand->shift != 16) |
| 1386 | { |
| 1387 | as_bad (_("zdaoff() relocation used on an instruction which does not support it")); |
| 1388 | /* Used to indicate an error condition. */ |
| 1389 | return BFD_RELOC_64; |
| 1390 | } |
| 1391 | |
| 1392 | return BFD_RELOC_V850_ZDA_16_16_OFFSET; |
| 1393 | } |
| 1394 | |
| 1395 | static bfd_reloc_code_real_type |
| 1396 | handle_tdaoff (const struct v850_operand *operand) |
| 1397 | { |
| 1398 | if (operand == NULL) |
| 1399 | /* Data item, not an instruction. */ |
| 1400 | return BFD_RELOC_V850_TDA_7_7_OFFSET; |
| 1401 | |
| 1402 | if (operand->bits == 6 && operand->shift == 1) |
| 1403 | /* sld.w/sst.w, operand: D8_6. */ |
| 1404 | return BFD_RELOC_V850_TDA_6_8_OFFSET; |
| 1405 | |
| 1406 | if (operand->bits == 4 && operand->insert != NULL) |
| 1407 | /* sld.hu, operand: D5-4. */ |
| 1408 | return BFD_RELOC_V850_TDA_4_5_OFFSET; |
| 1409 | |
| 1410 | if (operand->bits == 4 && operand->insert == NULL) |
| 1411 | /* sld.bu, operand: D4. */ |
| 1412 | return BFD_RELOC_V850_TDA_4_4_OFFSET; |
| 1413 | |
| 1414 | if (operand->bits == 16 && operand->shift == 16) |
| 1415 | /* set1 & chums, operands: D16. */ |
| 1416 | return BFD_RELOC_V850_TDA_16_16_OFFSET; |
| 1417 | |
| 1418 | if (operand->bits != 7) |
| 1419 | { |
| 1420 | as_bad (_("tdaoff() relocation used on an instruction which does not support it")); |
| 1421 | /* Used to indicate an error condition. */ |
| 1422 | return BFD_RELOC_64; |
| 1423 | } |
| 1424 | |
| 1425 | return operand->insert != NULL |
| 1426 | ? BFD_RELOC_V850_TDA_7_8_OFFSET /* sld.h/sst.h, operand: D8_7. */ |
| 1427 | : BFD_RELOC_V850_TDA_7_7_OFFSET; /* sld.b/sst.b, operand: D7. */ |
| 1428 | } |
| 1429 | |
| 1430 | /* Warning: The code in this function relies upon the definitions |
| 1431 | in the v850_operands[] array (defined in opcodes/v850-opc.c) |
| 1432 | matching the hard coded values contained herein. */ |
| 1433 | |
| 1434 | static bfd_reloc_code_real_type |
| 1435 | v850_reloc_prefix (const struct v850_operand *operand) |
| 1436 | { |
| 1437 | bfd_boolean paren_skipped = FALSE; |
| 1438 | |
| 1439 | /* Skip leading opening parenthesis. */ |
| 1440 | if (*input_line_pointer == '(') |
| 1441 | { |
| 1442 | ++input_line_pointer; |
| 1443 | paren_skipped = TRUE; |
| 1444 | } |
| 1445 | |
| 1446 | #define CHECK_(name, reloc) \ |
| 1447 | if (strncmp (input_line_pointer, name "(", strlen (name) + 1) == 0) \ |
| 1448 | { \ |
| 1449 | input_line_pointer += strlen (name); \ |
| 1450 | return reloc; \ |
| 1451 | } |
| 1452 | |
| 1453 | CHECK_ ("hi0", BFD_RELOC_HI16 ); |
| 1454 | CHECK_ ("hi", BFD_RELOC_HI16_S ); |
| 1455 | CHECK_ ("lo", handle_lo16 (operand) ); |
| 1456 | CHECK_ ("sdaoff", handle_sdaoff (operand)); |
| 1457 | CHECK_ ("zdaoff", handle_zdaoff (operand)); |
| 1458 | CHECK_ ("tdaoff", handle_tdaoff (operand)); |
| 1459 | CHECK_ ("hilo", BFD_RELOC_32 ); |
| 1460 | CHECK_ ("ctoff", handle_ctoff (operand) ); |
| 1461 | |
| 1462 | /* Restore skipped parenthesis. */ |
| 1463 | if (paren_skipped) |
| 1464 | --input_line_pointer; |
| 1465 | |
| 1466 | return BFD_RELOC_UNUSED; |
| 1467 | } |
| 1468 | |
| 1469 | /* Insert an operand value into an instruction. */ |
| 1470 | |
| 1471 | static unsigned long |
| 1472 | v850_insert_operand (unsigned long insn, |
| 1473 | const struct v850_operand *operand, |
| 1474 | offsetT val, |
| 1475 | char *file, |
| 1476 | unsigned int line, |
| 1477 | char *str) |
| 1478 | { |
| 1479 | if (operand->insert) |
| 1480 | { |
| 1481 | const char *message = NULL; |
| 1482 | |
| 1483 | insn = operand->insert (insn, val, &message); |
| 1484 | if (message != NULL) |
| 1485 | { |
| 1486 | if ((operand->flags & V850_OPERAND_SIGNED) |
| 1487 | && ! warn_signed_overflows |
| 1488 | && strstr (message, "out of range") != NULL) |
| 1489 | { |
| 1490 | /* Skip warning... */ |
| 1491 | } |
| 1492 | else if ((operand->flags & V850_OPERAND_SIGNED) == 0 |
| 1493 | && ! warn_unsigned_overflows |
| 1494 | && strstr (message, "out of range") != NULL) |
| 1495 | { |
| 1496 | /* Skip warning... */ |
| 1497 | } |
| 1498 | else if (str) |
| 1499 | { |
| 1500 | if (file == (char *) NULL) |
| 1501 | as_warn ("%s: %s", str, message); |
| 1502 | else |
| 1503 | as_warn_where (file, line, "%s: %s", str, message); |
| 1504 | } |
| 1505 | else |
| 1506 | { |
| 1507 | if (file == (char *) NULL) |
| 1508 | as_warn (message); |
| 1509 | else |
| 1510 | as_warn_where (file, line, message); |
| 1511 | } |
| 1512 | } |
| 1513 | } |
| 1514 | else |
| 1515 | { |
| 1516 | if (operand->bits != 32) |
| 1517 | { |
| 1518 | long min, max; |
| 1519 | |
| 1520 | if ((operand->flags & V850_OPERAND_SIGNED) != 0) |
| 1521 | { |
| 1522 | if (! warn_signed_overflows) |
| 1523 | max = (1 << operand->bits) - 1; |
| 1524 | else |
| 1525 | max = (1 << (operand->bits - 1)) - 1; |
| 1526 | |
| 1527 | min = -(1 << (operand->bits - 1)); |
| 1528 | } |
| 1529 | else |
| 1530 | { |
| 1531 | max = (1 << operand->bits) - 1; |
| 1532 | |
| 1533 | if (! warn_unsigned_overflows) |
| 1534 | min = -(1 << (operand->bits - 1)); |
| 1535 | else |
| 1536 | min = 0; |
| 1537 | } |
| 1538 | |
| 1539 | if (val < (offsetT) min || val > (offsetT) max) |
| 1540 | { |
| 1541 | char buf [128]; |
| 1542 | |
| 1543 | /* Restore min and mix to expected values for decimal ranges. */ |
| 1544 | if ((operand->flags & V850_OPERAND_SIGNED) |
| 1545 | && ! warn_signed_overflows) |
| 1546 | max = (1 << (operand->bits - 1)) - 1; |
| 1547 | |
| 1548 | if (! (operand->flags & V850_OPERAND_SIGNED) |
| 1549 | && ! warn_unsigned_overflows) |
| 1550 | min = 0; |
| 1551 | |
| 1552 | if (str) |
| 1553 | sprintf (buf, "%s: ", str); |
| 1554 | else |
| 1555 | buf[0] = 0; |
| 1556 | strcat (buf, _("operand")); |
| 1557 | |
| 1558 | as_bad_value_out_of_range (buf, val, (offsetT) min, (offsetT) max, file, line); |
| 1559 | } |
| 1560 | } |
| 1561 | |
| 1562 | insn |= (((long) val & ((1 << operand->bits) - 1)) << operand->shift); |
| 1563 | } |
| 1564 | |
| 1565 | return insn; |
| 1566 | } |
| 1567 | \f |
| 1568 | static char copy_of_instruction[128]; |
| 1569 | |
| 1570 | void |
| 1571 | md_assemble (char *str) |
| 1572 | { |
| 1573 | char *s; |
| 1574 | char *start_of_operands; |
| 1575 | struct v850_opcode *opcode; |
| 1576 | struct v850_opcode *next_opcode; |
| 1577 | const unsigned char *opindex_ptr; |
| 1578 | int next_opindex; |
| 1579 | int relaxable = 0; |
| 1580 | unsigned long insn; |
| 1581 | unsigned long insn_size; |
| 1582 | char *f; |
| 1583 | int i; |
| 1584 | int match; |
| 1585 | bfd_boolean extra_data_after_insn = FALSE; |
| 1586 | unsigned extra_data_len = 0; |
| 1587 | unsigned long extra_data = 0; |
| 1588 | char *saved_input_line_pointer; |
| 1589 | |
| 1590 | strncpy (copy_of_instruction, str, sizeof (copy_of_instruction) - 1); |
| 1591 | |
| 1592 | /* Get the opcode. */ |
| 1593 | for (s = str; *s != '\0' && ! ISSPACE (*s); s++) |
| 1594 | continue; |
| 1595 | |
| 1596 | if (*s != '\0') |
| 1597 | *s++ = '\0'; |
| 1598 | |
| 1599 | /* Find the first opcode with the proper name. */ |
| 1600 | opcode = (struct v850_opcode *) hash_find (v850_hash, str); |
| 1601 | if (opcode == NULL) |
| 1602 | { |
| 1603 | /* xgettext:c-format */ |
| 1604 | as_bad (_("Unrecognized opcode: `%s'"), str); |
| 1605 | ignore_rest_of_line (); |
| 1606 | return; |
| 1607 | } |
| 1608 | |
| 1609 | str = s; |
| 1610 | while (ISSPACE (*str)) |
| 1611 | ++str; |
| 1612 | |
| 1613 | start_of_operands = str; |
| 1614 | |
| 1615 | saved_input_line_pointer = input_line_pointer; |
| 1616 | |
| 1617 | for (;;) |
| 1618 | { |
| 1619 | const char *errmsg = NULL; |
| 1620 | |
| 1621 | match = 0; |
| 1622 | |
| 1623 | if ((opcode->processors & processor_mask) == 0) |
| 1624 | { |
| 1625 | errmsg = _("Target processor does not support this instruction."); |
| 1626 | goto error; |
| 1627 | } |
| 1628 | |
| 1629 | relaxable = 0; |
| 1630 | fc = 0; |
| 1631 | next_opindex = 0; |
| 1632 | insn = opcode->opcode; |
| 1633 | extra_data_after_insn = FALSE; |
| 1634 | |
| 1635 | input_line_pointer = str = start_of_operands; |
| 1636 | |
| 1637 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) |
| 1638 | { |
| 1639 | const struct v850_operand *operand; |
| 1640 | char *hold; |
| 1641 | expressionS ex; |
| 1642 | bfd_reloc_code_real_type reloc; |
| 1643 | |
| 1644 | if (next_opindex == 0) |
| 1645 | operand = &v850_operands[*opindex_ptr]; |
| 1646 | else |
| 1647 | { |
| 1648 | operand = &v850_operands[next_opindex]; |
| 1649 | next_opindex = 0; |
| 1650 | } |
| 1651 | |
| 1652 | errmsg = NULL; |
| 1653 | |
| 1654 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']') |
| 1655 | ++str; |
| 1656 | |
| 1657 | if (operand->flags & V850_OPERAND_RELAX) |
| 1658 | relaxable = 1; |
| 1659 | |
| 1660 | /* Gather the operand. */ |
| 1661 | hold = input_line_pointer; |
| 1662 | input_line_pointer = str; |
| 1663 | |
| 1664 | /* lo(), hi(), hi0(), etc... */ |
| 1665 | if ((reloc = v850_reloc_prefix (operand)) != BFD_RELOC_UNUSED) |
| 1666 | { |
| 1667 | /* This is a fake reloc, used to indicate an error condition. */ |
| 1668 | if (reloc == BFD_RELOC_64) |
| 1669 | { |
| 1670 | match = 1; |
| 1671 | goto error; |
| 1672 | } |
| 1673 | |
| 1674 | expression (&ex); |
| 1675 | |
| 1676 | if (ex.X_op == O_constant) |
| 1677 | { |
| 1678 | switch (reloc) |
| 1679 | { |
| 1680 | case BFD_RELOC_V850_ZDA_16_16_OFFSET: |
| 1681 | /* To cope with "not1 7, zdaoff(0xfffff006)[r0]" |
| 1682 | and the like. */ |
| 1683 | /* Fall through. */ |
| 1684 | |
| 1685 | case BFD_RELOC_LO16: |
| 1686 | case BFD_RELOC_V850_LO16_SPLIT_OFFSET: |
| 1687 | { |
| 1688 | /* Truncate, then sign extend the value. */ |
| 1689 | ex.X_add_number = SEXT16 (ex.X_add_number); |
| 1690 | break; |
| 1691 | } |
| 1692 | |
| 1693 | case BFD_RELOC_HI16: |
| 1694 | { |
| 1695 | /* Truncate, then sign extend the value. */ |
| 1696 | ex.X_add_number = SEXT16 (ex.X_add_number >> 16); |
| 1697 | break; |
| 1698 | } |
| 1699 | |
| 1700 | case BFD_RELOC_HI16_S: |
| 1701 | { |
| 1702 | /* Truncate, then sign extend the value. */ |
| 1703 | int temp = (ex.X_add_number >> 16) & 0xffff; |
| 1704 | |
| 1705 | temp += (ex.X_add_number >> 15) & 1; |
| 1706 | |
| 1707 | ex.X_add_number = SEXT16 (temp); |
| 1708 | break; |
| 1709 | } |
| 1710 | |
| 1711 | case BFD_RELOC_32: |
| 1712 | if ((operand->flags & V850E_IMMEDIATE32) == 0) |
| 1713 | { |
| 1714 | errmsg = _("immediate operand is too large"); |
| 1715 | goto error; |
| 1716 | } |
| 1717 | |
| 1718 | extra_data_after_insn = TRUE; |
| 1719 | extra_data_len = 4; |
| 1720 | extra_data = 0; |
| 1721 | break; |
| 1722 | |
| 1723 | default: |
| 1724 | fprintf (stderr, "reloc: %d\n", reloc); |
| 1725 | as_bad (_("AAARG -> unhandled constant reloc")); |
| 1726 | break; |
| 1727 | } |
| 1728 | |
| 1729 | if (fc > MAX_INSN_FIXUPS) |
| 1730 | as_fatal (_("too many fixups")); |
| 1731 | |
| 1732 | fixups[fc].exp = ex; |
| 1733 | fixups[fc].opindex = *opindex_ptr; |
| 1734 | fixups[fc].reloc = reloc; |
| 1735 | fc++; |
| 1736 | } |
| 1737 | else |
| 1738 | { |
| 1739 | if (reloc == BFD_RELOC_32) |
| 1740 | { |
| 1741 | if ((operand->flags & V850E_IMMEDIATE32) == 0) |
| 1742 | { |
| 1743 | errmsg = _("immediate operand is too large"); |
| 1744 | goto error; |
| 1745 | } |
| 1746 | |
| 1747 | extra_data_after_insn = TRUE; |
| 1748 | extra_data_len = 4; |
| 1749 | extra_data = ex.X_add_number; |
| 1750 | } |
| 1751 | |
| 1752 | if (fc > MAX_INSN_FIXUPS) |
| 1753 | as_fatal (_("too many fixups")); |
| 1754 | |
| 1755 | fixups[fc].exp = ex; |
| 1756 | fixups[fc].opindex = *opindex_ptr; |
| 1757 | fixups[fc].reloc = reloc; |
| 1758 | fc++; |
| 1759 | } |
| 1760 | } |
| 1761 | else |
| 1762 | { |
| 1763 | errmsg = NULL; |
| 1764 | |
| 1765 | if ((operand->flags & V850_OPERAND_REG) != 0) |
| 1766 | { |
| 1767 | if (!register_name (&ex)) |
| 1768 | errmsg = _("invalid register name"); |
| 1769 | else if ((operand->flags & V850_NOT_R0) |
| 1770 | && ex.X_add_number == 0) |
| 1771 | { |
| 1772 | errmsg = _("register r0 cannot be used here"); |
| 1773 | |
| 1774 | /* Force an error message to be generated by |
| 1775 | skipping over any following potential matches |
| 1776 | for this opcode. */ |
| 1777 | opcode += 3; |
| 1778 | } |
| 1779 | } |
| 1780 | else if ((operand->flags & V850_OPERAND_SRG) != 0) |
| 1781 | { |
| 1782 | if (!system_register_name (&ex, TRUE, FALSE)) |
| 1783 | errmsg = _("invalid system register name"); |
| 1784 | } |
| 1785 | else if ((operand->flags & V850_OPERAND_EP) != 0) |
| 1786 | { |
| 1787 | char *start = input_line_pointer; |
| 1788 | char c = get_symbol_end (); |
| 1789 | |
| 1790 | if (strcmp (start, "ep") != 0 && strcmp (start, "r30") != 0) |
| 1791 | { |
| 1792 | /* Put things back the way we found them. */ |
| 1793 | *input_line_pointer = c; |
| 1794 | input_line_pointer = start; |
| 1795 | errmsg = _("expected EP register"); |
| 1796 | goto error; |
| 1797 | } |
| 1798 | |
| 1799 | *input_line_pointer = c; |
| 1800 | str = input_line_pointer; |
| 1801 | input_line_pointer = hold; |
| 1802 | |
| 1803 | while (*str == ' ' || *str == ',' |
| 1804 | || *str == '[' || *str == ']') |
| 1805 | ++str; |
| 1806 | continue; |
| 1807 | } |
| 1808 | else if ((operand->flags & V850_OPERAND_CC) != 0) |
| 1809 | { |
| 1810 | if (!cc_name (&ex)) |
| 1811 | errmsg = _("invalid condition code name"); |
| 1812 | } |
| 1813 | else if (operand->flags & V850E_PUSH_POP) |
| 1814 | { |
| 1815 | errmsg = parse_register_list (&insn, operand); |
| 1816 | |
| 1817 | /* The parse_register_list() function has already done |
| 1818 | everything, so fake a dummy expression. */ |
| 1819 | ex.X_op = O_constant; |
| 1820 | ex.X_add_number = 0; |
| 1821 | } |
| 1822 | else if (operand->flags & V850E_IMMEDIATE16) |
| 1823 | { |
| 1824 | expression (&ex); |
| 1825 | |
| 1826 | if (ex.X_op != O_constant) |
| 1827 | errmsg = _("constant expression expected"); |
| 1828 | else if (ex.X_add_number & 0xffff0000) |
| 1829 | { |
| 1830 | if (ex.X_add_number & 0xffff) |
| 1831 | errmsg = _("constant too big to fit into instruction"); |
| 1832 | else if ((insn & 0x001fffc0) == 0x00130780) |
| 1833 | ex.X_add_number >>= 16; |
| 1834 | else |
| 1835 | errmsg = _("constant too big to fit into instruction"); |
| 1836 | } |
| 1837 | |
| 1838 | extra_data_after_insn = TRUE; |
| 1839 | extra_data_len = 2; |
| 1840 | extra_data = ex.X_add_number; |
| 1841 | ex.X_add_number = 0; |
| 1842 | } |
| 1843 | else if (operand->flags & V850E_IMMEDIATE32) |
| 1844 | { |
| 1845 | expression (&ex); |
| 1846 | |
| 1847 | if (ex.X_op != O_constant) |
| 1848 | errmsg = _("constant expression expected"); |
| 1849 | |
| 1850 | extra_data_after_insn = TRUE; |
| 1851 | extra_data_len = 4; |
| 1852 | extra_data = ex.X_add_number; |
| 1853 | ex.X_add_number = 0; |
| 1854 | } |
| 1855 | else if (register_name (&ex) |
| 1856 | && (operand->flags & V850_OPERAND_REG) == 0) |
| 1857 | { |
| 1858 | char c; |
| 1859 | int exists = 0; |
| 1860 | |
| 1861 | /* It is possible that an alias has been defined that |
| 1862 | matches a register name. For example the code may |
| 1863 | include a ".set ZERO, 0" directive, which matches |
| 1864 | the register name "zero". Attempt to reparse the |
| 1865 | field as an expression, and only complain if we |
| 1866 | cannot generate a constant. */ |
| 1867 | |
| 1868 | input_line_pointer = str; |
| 1869 | |
| 1870 | c = get_symbol_end (); |
| 1871 | |
| 1872 | if (symbol_find (str) != NULL) |
| 1873 | exists = 1; |
| 1874 | |
| 1875 | *input_line_pointer = c; |
| 1876 | input_line_pointer = str; |
| 1877 | |
| 1878 | expression (&ex); |
| 1879 | |
| 1880 | if (ex.X_op != O_constant) |
| 1881 | { |
| 1882 | /* If this register is actually occurring too early on |
| 1883 | the parsing of the instruction, (because another |
| 1884 | field is missing) then report this. */ |
| 1885 | if (opindex_ptr[1] != 0 |
| 1886 | && (v850_operands[opindex_ptr[1]].flags |
| 1887 | & V850_OPERAND_REG)) |
| 1888 | errmsg = _("syntax error: value is missing before the register name"); |
| 1889 | else |
| 1890 | errmsg = _("syntax error: register not expected"); |
| 1891 | |
| 1892 | /* If we created a symbol in the process of this |
| 1893 | test then delete it now, so that it will not |
| 1894 | be output with the real symbols... */ |
| 1895 | if (exists == 0 |
| 1896 | && ex.X_op == O_symbol) |
| 1897 | symbol_remove (ex.X_add_symbol, |
| 1898 | &symbol_rootP, &symbol_lastP); |
| 1899 | } |
| 1900 | } |
| 1901 | else if (system_register_name (&ex, FALSE, FALSE) |
| 1902 | && (operand->flags & V850_OPERAND_SRG) == 0) |
| 1903 | errmsg = _("syntax error: system register not expected"); |
| 1904 | |
| 1905 | else if (cc_name (&ex) |
| 1906 | && (operand->flags & V850_OPERAND_CC) == 0) |
| 1907 | errmsg = _("syntax error: condition code not expected"); |
| 1908 | |
| 1909 | else |
| 1910 | { |
| 1911 | expression (&ex); |
| 1912 | /* Special case: |
| 1913 | If we are assembling a MOV instruction and the immediate |
| 1914 | value does not fit into the bits available then create a |
| 1915 | fake error so that the next MOV instruction will be |
| 1916 | selected. This one has a 32 bit immediate field. */ |
| 1917 | |
| 1918 | if (((insn & 0x07e0) == 0x0200) |
| 1919 | && operand->bits == 5 /* Do not match the CALLT instruction. */ |
| 1920 | && ex.X_op == O_constant |
| 1921 | && (ex.X_add_number < (-(1 << (operand->bits - 1))) |
| 1922 | || ex.X_add_number > ((1 << (operand->bits - 1)) - 1))) |
| 1923 | errmsg = _("immediate operand is too large"); |
| 1924 | } |
| 1925 | |
| 1926 | if (errmsg) |
| 1927 | goto error; |
| 1928 | |
| 1929 | switch (ex.X_op) |
| 1930 | { |
| 1931 | case O_illegal: |
| 1932 | errmsg = _("illegal operand"); |
| 1933 | goto error; |
| 1934 | case O_absent: |
| 1935 | errmsg = _("missing operand"); |
| 1936 | goto error; |
| 1937 | case O_register: |
| 1938 | if ((operand->flags |
| 1939 | & (V850_OPERAND_REG | V850_OPERAND_SRG)) == 0) |
| 1940 | { |
| 1941 | errmsg = _("invalid operand"); |
| 1942 | goto error; |
| 1943 | } |
| 1944 | insn = v850_insert_operand (insn, operand, ex.X_add_number, |
| 1945 | NULL, 0, copy_of_instruction); |
| 1946 | break; |
| 1947 | |
| 1948 | case O_constant: |
| 1949 | insn = v850_insert_operand (insn, operand, ex.X_add_number, |
| 1950 | NULL, 0, copy_of_instruction); |
| 1951 | break; |
| 1952 | |
| 1953 | default: |
| 1954 | /* We need to generate a fixup for this expression. */ |
| 1955 | if (fc >= MAX_INSN_FIXUPS) |
| 1956 | as_fatal (_("too many fixups")); |
| 1957 | |
| 1958 | fixups[fc].exp = ex; |
| 1959 | fixups[fc].opindex = *opindex_ptr; |
| 1960 | fixups[fc].reloc = BFD_RELOC_UNUSED; |
| 1961 | ++fc; |
| 1962 | break; |
| 1963 | } |
| 1964 | } |
| 1965 | |
| 1966 | str = input_line_pointer; |
| 1967 | input_line_pointer = hold; |
| 1968 | |
| 1969 | while (*str == ' ' || *str == ',' || *str == '[' || *str == ']' |
| 1970 | || *str == ')') |
| 1971 | ++str; |
| 1972 | } |
| 1973 | match = 1; |
| 1974 | |
| 1975 | error: |
| 1976 | if (match == 0) |
| 1977 | { |
| 1978 | next_opcode = opcode + 1; |
| 1979 | if (next_opcode->name != NULL |
| 1980 | && strcmp (next_opcode->name, opcode->name) == 0) |
| 1981 | { |
| 1982 | opcode = next_opcode; |
| 1983 | |
| 1984 | /* Skip versions that are not supported by the target |
| 1985 | processor. */ |
| 1986 | if ((opcode->processors & processor_mask) == 0) |
| 1987 | goto error; |
| 1988 | |
| 1989 | continue; |
| 1990 | } |
| 1991 | |
| 1992 | as_bad ("%s: %s", copy_of_instruction, errmsg); |
| 1993 | |
| 1994 | if (*input_line_pointer == ']') |
| 1995 | ++input_line_pointer; |
| 1996 | |
| 1997 | ignore_rest_of_line (); |
| 1998 | input_line_pointer = saved_input_line_pointer; |
| 1999 | return; |
| 2000 | } |
| 2001 | break; |
| 2002 | } |
| 2003 | |
| 2004 | while (ISSPACE (*str)) |
| 2005 | ++str; |
| 2006 | |
| 2007 | if (*str != '\0') |
| 2008 | /* xgettext:c-format */ |
| 2009 | as_bad (_("junk at end of line: `%s'"), str); |
| 2010 | |
| 2011 | input_line_pointer = str; |
| 2012 | |
| 2013 | /* Tie dwarf2 debug info to the address at the start of the insn. |
| 2014 | We can't do this after the insn has been output as the current |
| 2015 | frag may have been closed off. eg. by frag_var. */ |
| 2016 | dwarf2_emit_insn (0); |
| 2017 | |
| 2018 | /* Write out the instruction. */ |
| 2019 | |
| 2020 | if (relaxable && fc > 0) |
| 2021 | { |
| 2022 | /* On a 64-bit host the size of an 'int' is not the same |
| 2023 | as the size of a pointer, so we need a union to convert |
| 2024 | the opindex field of the fr_cgen structure into a char * |
| 2025 | so that it can be stored in the frag. We do not have |
| 2026 | to worry about loosing accuracy as we are not going to |
| 2027 | be even close to the 32bit limit of the int. */ |
| 2028 | union |
| 2029 | { |
| 2030 | int opindex; |
| 2031 | char * ptr; |
| 2032 | } |
| 2033 | opindex_converter; |
| 2034 | |
| 2035 | opindex_converter.opindex = fixups[0].opindex; |
| 2036 | insn_size = 2; |
| 2037 | fc = 0; |
| 2038 | |
| 2039 | if (!strcmp (opcode->name, "br")) |
| 2040 | { |
| 2041 | f = frag_var (rs_machine_dependent, 4, 2, 2, |
| 2042 | fixups[0].exp.X_add_symbol, |
| 2043 | fixups[0].exp.X_add_number, |
| 2044 | opindex_converter.ptr); |
| 2045 | md_number_to_chars (f, insn, insn_size); |
| 2046 | md_number_to_chars (f + 2, 0, 2); |
| 2047 | } |
| 2048 | else |
| 2049 | { |
| 2050 | f = frag_var (rs_machine_dependent, 6, 4, 0, |
| 2051 | fixups[0].exp.X_add_symbol, |
| 2052 | fixups[0].exp.X_add_number, |
| 2053 | opindex_converter.ptr); |
| 2054 | md_number_to_chars (f, insn, insn_size); |
| 2055 | md_number_to_chars (f + 2, 0, 4); |
| 2056 | } |
| 2057 | } |
| 2058 | else |
| 2059 | { |
| 2060 | /* Four byte insns have an opcode with the two high bits on. */ |
| 2061 | if ((insn & 0x0600) == 0x0600) |
| 2062 | insn_size = 4; |
| 2063 | else |
| 2064 | insn_size = 2; |
| 2065 | |
| 2066 | /* Special case: 32 bit MOV. */ |
| 2067 | if ((insn & 0xffe0) == 0x0620) |
| 2068 | insn_size = 2; |
| 2069 | |
| 2070 | f = frag_more (insn_size); |
| 2071 | md_number_to_chars (f, insn, insn_size); |
| 2072 | |
| 2073 | if (extra_data_after_insn) |
| 2074 | { |
| 2075 | f = frag_more (extra_data_len); |
| 2076 | md_number_to_chars (f, extra_data, extra_data_len); |
| 2077 | |
| 2078 | extra_data_after_insn = FALSE; |
| 2079 | } |
| 2080 | } |
| 2081 | |
| 2082 | /* Create any fixups. At this point we do not use a |
| 2083 | bfd_reloc_code_real_type, but instead just use the |
| 2084 | BFD_RELOC_UNUSED plus the operand index. This lets us easily |
| 2085 | handle fixups for any operand type, although that is admittedly |
| 2086 | not a very exciting feature. We pick a BFD reloc type in |
| 2087 | md_apply_fix. */ |
| 2088 | for (i = 0; i < fc; i++) |
| 2089 | { |
| 2090 | const struct v850_operand *operand; |
| 2091 | bfd_reloc_code_real_type reloc; |
| 2092 | |
| 2093 | operand = &v850_operands[fixups[i].opindex]; |
| 2094 | |
| 2095 | reloc = fixups[i].reloc; |
| 2096 | |
| 2097 | if (reloc != BFD_RELOC_UNUSED) |
| 2098 | { |
| 2099 | reloc_howto_type *reloc_howto = |
| 2100 | bfd_reloc_type_lookup (stdoutput, reloc); |
| 2101 | int size; |
| 2102 | int address; |
| 2103 | fixS *fixP; |
| 2104 | |
| 2105 | if (!reloc_howto) |
| 2106 | abort (); |
| 2107 | |
| 2108 | size = bfd_get_reloc_size (reloc_howto); |
| 2109 | |
| 2110 | /* XXX This will abort on an R_V850_8 reloc - |
| 2111 | is this reloc actually used? */ |
| 2112 | if (size != 2 && size != 4) |
| 2113 | abort (); |
| 2114 | |
| 2115 | address = (f - frag_now->fr_literal) + insn_size - size; |
| 2116 | |
| 2117 | if (reloc == BFD_RELOC_32) |
| 2118 | address += 2; |
| 2119 | |
| 2120 | fixP = fix_new_exp (frag_now, address, size, |
| 2121 | &fixups[i].exp, |
| 2122 | reloc_howto->pc_relative, |
| 2123 | reloc); |
| 2124 | |
| 2125 | fixP->tc_fix_data = (void *) operand; |
| 2126 | |
| 2127 | switch (reloc) |
| 2128 | { |
| 2129 | case BFD_RELOC_LO16: |
| 2130 | case BFD_RELOC_V850_LO16_SPLIT_OFFSET: |
| 2131 | case BFD_RELOC_HI16: |
| 2132 | case BFD_RELOC_HI16_S: |
| 2133 | fixP->fx_no_overflow = 1; |
| 2134 | break; |
| 2135 | default: |
| 2136 | break; |
| 2137 | } |
| 2138 | } |
| 2139 | else |
| 2140 | { |
| 2141 | fix_new_exp (frag_now, |
| 2142 | f - frag_now->fr_literal, 4, |
| 2143 | & fixups[i].exp, |
| 2144 | (operand->flags & V850_OPERAND_DISP) != 0, |
| 2145 | (bfd_reloc_code_real_type) (fixups[i].opindex |
| 2146 | + (int) BFD_RELOC_UNUSED)); |
| 2147 | } |
| 2148 | } |
| 2149 | |
| 2150 | input_line_pointer = saved_input_line_pointer; |
| 2151 | } |
| 2152 | |
| 2153 | /* If while processing a fixup, a reloc really needs to be created |
| 2154 | then it is done here. */ |
| 2155 | |
| 2156 | arelent * |
| 2157 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp) |
| 2158 | { |
| 2159 | arelent *reloc; |
| 2160 | |
| 2161 | reloc = xmalloc (sizeof (arelent)); |
| 2162 | reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *)); |
| 2163 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 2164 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 2165 | |
| 2166 | if ( fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
| 2167 | || fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 2168 | || fixp->fx_r_type == BFD_RELOC_V850_LONGCALL |
| 2169 | || fixp->fx_r_type == BFD_RELOC_V850_LONGJUMP |
| 2170 | || fixp->fx_r_type == BFD_RELOC_V850_ALIGN) |
| 2171 | reloc->addend = fixp->fx_offset; |
| 2172 | else |
| 2173 | { |
| 2174 | if (fixp->fx_r_type == BFD_RELOC_32 |
| 2175 | && fixp->fx_pcrel) |
| 2176 | fixp->fx_r_type = BFD_RELOC_32_PCREL; |
| 2177 | |
| 2178 | reloc->addend = fixp->fx_addnumber; |
| 2179 | } |
| 2180 | |
| 2181 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 2182 | |
| 2183 | if (reloc->howto == NULL) |
| 2184 | { |
| 2185 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 2186 | /* xgettext:c-format */ |
| 2187 | _("reloc %d not supported by object file format"), |
| 2188 | (int) fixp->fx_r_type); |
| 2189 | |
| 2190 | xfree (reloc); |
| 2191 | |
| 2192 | return NULL; |
| 2193 | } |
| 2194 | |
| 2195 | return reloc; |
| 2196 | } |
| 2197 | |
| 2198 | void |
| 2199 | v850_handle_align (fragS * frag) |
| 2200 | { |
| 2201 | if (v850_relax |
| 2202 | && frag->fr_type == rs_align |
| 2203 | && frag->fr_address + frag->fr_fix > 0 |
| 2204 | && frag->fr_offset > 1 |
| 2205 | && now_seg != bss_section |
| 2206 | && now_seg != v850_seg_table[SBSS_SECTION].s |
| 2207 | && now_seg != v850_seg_table[TBSS_SECTION].s |
| 2208 | && now_seg != v850_seg_table[ZBSS_SECTION].s) |
| 2209 | fix_new (frag, frag->fr_fix, 2, & abs_symbol, frag->fr_offset, 0, |
| 2210 | BFD_RELOC_V850_ALIGN); |
| 2211 | } |
| 2212 | |
| 2213 | /* Return current size of variable part of frag. */ |
| 2214 | |
| 2215 | int |
| 2216 | md_estimate_size_before_relax (fragS *fragp, asection *seg ATTRIBUTE_UNUSED) |
| 2217 | { |
| 2218 | if (fragp->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0])) |
| 2219 | abort (); |
| 2220 | |
| 2221 | return md_relax_table[fragp->fr_subtype].rlx_length; |
| 2222 | } |
| 2223 | |
| 2224 | long |
| 2225 | v850_pcrel_from_section (fixS *fixp, segT section) |
| 2226 | { |
| 2227 | /* If the symbol is undefined, or in a section other than our own, |
| 2228 | or it is weak (in which case it may well be in another section, |
| 2229 | then let the linker figure it out. */ |
| 2230 | if (fixp->fx_addsy != (symbolS *) NULL |
| 2231 | && (! S_IS_DEFINED (fixp->fx_addsy) |
| 2232 | || S_IS_WEAK (fixp->fx_addsy) |
| 2233 | || (S_GET_SEGMENT (fixp->fx_addsy) != section))) |
| 2234 | return 0; |
| 2235 | |
| 2236 | return fixp->fx_frag->fr_address + fixp->fx_where; |
| 2237 | } |
| 2238 | |
| 2239 | void |
| 2240 | md_apply_fix (fixS *fixP, valueT *valueP, segT seg ATTRIBUTE_UNUSED) |
| 2241 | { |
| 2242 | valueT value = * valueP; |
| 2243 | char *where; |
| 2244 | |
| 2245 | if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 2246 | || fixP->fx_r_type == BFD_RELOC_V850_LONGCALL |
| 2247 | || fixP->fx_r_type == BFD_RELOC_V850_LONGJUMP |
| 2248 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 2249 | { |
| 2250 | fixP->fx_done = 0; |
| 2251 | return; |
| 2252 | } |
| 2253 | |
| 2254 | if (fixP->fx_addsy == (symbolS *) NULL) |
| 2255 | fixP->fx_addnumber = value, |
| 2256 | fixP->fx_done = 1; |
| 2257 | |
| 2258 | else if (fixP->fx_pcrel) |
| 2259 | fixP->fx_addnumber = fixP->fx_offset; |
| 2260 | |
| 2261 | else |
| 2262 | { |
| 2263 | value = fixP->fx_offset; |
| 2264 | if (fixP->fx_subsy != (symbolS *) NULL) |
| 2265 | { |
| 2266 | if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section) |
| 2267 | value -= S_GET_VALUE (fixP->fx_subsy); |
| 2268 | else |
| 2269 | /* We don't actually support subtracting a symbol. */ |
| 2270 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2271 | _("expression too complex")); |
| 2272 | } |
| 2273 | fixP->fx_addnumber = value; |
| 2274 | } |
| 2275 | |
| 2276 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) |
| 2277 | { |
| 2278 | int opindex; |
| 2279 | const struct v850_operand *operand; |
| 2280 | unsigned long insn; |
| 2281 | |
| 2282 | opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; |
| 2283 | operand = &v850_operands[opindex]; |
| 2284 | |
| 2285 | /* Fetch the instruction, insert the fully resolved operand |
| 2286 | value, and stuff the instruction back again. |
| 2287 | |
| 2288 | Note the instruction has been stored in little endian |
| 2289 | format! */ |
| 2290 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 2291 | |
| 2292 | insn = bfd_getl32 ((unsigned char *) where); |
| 2293 | insn = v850_insert_operand (insn, operand, (offsetT) value, |
| 2294 | fixP->fx_file, fixP->fx_line, NULL); |
| 2295 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); |
| 2296 | |
| 2297 | if (fixP->fx_done) |
| 2298 | /* Nothing else to do here. */ |
| 2299 | return; |
| 2300 | |
| 2301 | /* Determine a BFD reloc value based on the operand information. |
| 2302 | We are only prepared to turn a few of the operands into relocs. */ |
| 2303 | |
| 2304 | if (operand->bits == 22) |
| 2305 | fixP->fx_r_type = BFD_RELOC_V850_22_PCREL; |
| 2306 | else if (operand->bits == 9) |
| 2307 | fixP->fx_r_type = BFD_RELOC_V850_9_PCREL; |
| 2308 | else |
| 2309 | { |
| 2310 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 2311 | _("unresolved expression that must be resolved")); |
| 2312 | fixP->fx_done = 1; |
| 2313 | return; |
| 2314 | } |
| 2315 | } |
| 2316 | else if (fixP->fx_done) |
| 2317 | { |
| 2318 | /* We still have to insert the value into memory! */ |
| 2319 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 2320 | |
| 2321 | if (fixP->tc_fix_data != NULL |
| 2322 | && ((struct v850_operand *) fixP->tc_fix_data)->insert != NULL) |
| 2323 | { |
| 2324 | const char * message = NULL; |
| 2325 | struct v850_operand * operand = (struct v850_operand *) fixP->tc_fix_data; |
| 2326 | unsigned long insn; |
| 2327 | |
| 2328 | /* The variable "where" currently points at the exact point inside |
| 2329 | the insn where we need to insert the value. But we need to |
| 2330 | extract the entire insn so we probably need to move "where" |
| 2331 | back a few bytes. */ |
| 2332 | if (fixP->fx_size == 2) |
| 2333 | where -= 2; |
| 2334 | else if (fixP->fx_size == 1) |
| 2335 | where -= 3; |
| 2336 | |
| 2337 | insn = bfd_getl32 ((unsigned char *) where); |
| 2338 | |
| 2339 | /* Use the operand's insertion procedure, if present, in order to |
| 2340 | make sure that the value is correctly stored in the insn. */ |
| 2341 | insn = operand->insert (insn, (offsetT) value, & message); |
| 2342 | /* Ignore message even if it is set. */ |
| 2343 | |
| 2344 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); |
| 2345 | } |
| 2346 | else |
| 2347 | { |
| 2348 | if (fixP->fx_r_type == BFD_RELOC_V850_LO16_SPLIT_OFFSET) |
| 2349 | bfd_putl32 (((value << 16) & 0xfffe0000) |
| 2350 | | ((value << 5) & 0x20) |
| 2351 | | (bfd_getl32 (where) & ~0xfffe0020), where); |
| 2352 | else if (fixP->fx_size == 1) |
| 2353 | *where = value & 0xff; |
| 2354 | else if (fixP->fx_size == 2) |
| 2355 | bfd_putl16 (value & 0xffff, (unsigned char *) where); |
| 2356 | else if (fixP->fx_size == 4) |
| 2357 | bfd_putl32 (value, (unsigned char *) where); |
| 2358 | } |
| 2359 | } |
| 2360 | } |
| 2361 | \f |
| 2362 | /* Parse a cons expression. We have to handle hi(), lo(), etc |
| 2363 | on the v850. */ |
| 2364 | |
| 2365 | void |
| 2366 | parse_cons_expression_v850 (expressionS *exp) |
| 2367 | { |
| 2368 | /* See if there's a reloc prefix like hi() we have to handle. */ |
| 2369 | hold_cons_reloc = v850_reloc_prefix (NULL); |
| 2370 | |
| 2371 | /* Do normal expression parsing. */ |
| 2372 | expression (exp); |
| 2373 | } |
| 2374 | |
| 2375 | /* Create a fixup for a cons expression. If parse_cons_expression_v850 |
| 2376 | found a reloc prefix, then we use that reloc, else we choose an |
| 2377 | appropriate one based on the size of the expression. */ |
| 2378 | |
| 2379 | void |
| 2380 | cons_fix_new_v850 (fragS *frag, |
| 2381 | int where, |
| 2382 | int size, |
| 2383 | expressionS *exp) |
| 2384 | { |
| 2385 | if (hold_cons_reloc == BFD_RELOC_UNUSED) |
| 2386 | { |
| 2387 | if (size == 4) |
| 2388 | hold_cons_reloc = BFD_RELOC_32; |
| 2389 | if (size == 2) |
| 2390 | hold_cons_reloc = BFD_RELOC_16; |
| 2391 | if (size == 1) |
| 2392 | hold_cons_reloc = BFD_RELOC_8; |
| 2393 | } |
| 2394 | |
| 2395 | if (exp != NULL) |
| 2396 | fix_new_exp (frag, where, size, exp, 0, hold_cons_reloc); |
| 2397 | else |
| 2398 | fix_new (frag, where, size, NULL, 0, 0, hold_cons_reloc); |
| 2399 | |
| 2400 | hold_cons_reloc = BFD_RELOC_UNUSED; |
| 2401 | } |
| 2402 | |
| 2403 | bfd_boolean |
| 2404 | v850_fix_adjustable (fixS *fixP) |
| 2405 | { |
| 2406 | if (fixP->fx_addsy == NULL) |
| 2407 | return 1; |
| 2408 | |
| 2409 | /* Don't adjust function names. */ |
| 2410 | if (S_IS_FUNCTION (fixP->fx_addsy)) |
| 2411 | return 0; |
| 2412 | |
| 2413 | /* We need the symbol name for the VTABLE entries. */ |
| 2414 | if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 2415 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 2416 | return 0; |
| 2417 | |
| 2418 | return 1; |
| 2419 | } |
| 2420 | |
| 2421 | int |
| 2422 | v850_force_relocation (struct fix *fixP) |
| 2423 | { |
| 2424 | if (fixP->fx_r_type == BFD_RELOC_V850_LONGCALL |
| 2425 | || fixP->fx_r_type == BFD_RELOC_V850_LONGJUMP) |
| 2426 | return 1; |
| 2427 | |
| 2428 | if (v850_relax |
| 2429 | && (fixP->fx_pcrel |
| 2430 | || fixP->fx_r_type == BFD_RELOC_V850_ALIGN |
| 2431 | || fixP->fx_r_type == BFD_RELOC_V850_22_PCREL |
| 2432 | || fixP->fx_r_type == BFD_RELOC_V850_9_PCREL |
| 2433 | || fixP->fx_r_type >= BFD_RELOC_UNUSED)) |
| 2434 | return 1; |
| 2435 | |
| 2436 | return generic_force_reloc (fixP); |
| 2437 | } |