| 1 | /* tc-sh.c -- Assemble code for the Renesas / SuperH SH |
| 2 | Copyright (C) 1993-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
| 19 | Boston, MA 02110-1301, USA. */ |
| 20 | |
| 21 | /* Written By Steve Chamberlain <sac@cygnus.com> */ |
| 22 | |
| 23 | #include "as.h" |
| 24 | #include "subsegs.h" |
| 25 | #define DEFINE_TABLE |
| 26 | #include "opcodes/sh-opc.h" |
| 27 | #include "safe-ctype.h" |
| 28 | |
| 29 | #ifdef OBJ_ELF |
| 30 | #include "elf/sh.h" |
| 31 | #endif |
| 32 | |
| 33 | #include "dwarf2dbg.h" |
| 34 | #include "dw2gencfi.h" |
| 35 | |
| 36 | typedef struct |
| 37 | { |
| 38 | sh_arg_type type; |
| 39 | int reg; |
| 40 | expressionS immediate; |
| 41 | } |
| 42 | sh_operand_info; |
| 43 | |
| 44 | const char comment_chars[] = "!"; |
| 45 | const char line_separator_chars[] = ";"; |
| 46 | const char line_comment_chars[] = "!#"; |
| 47 | |
| 48 | static void s_uses (int); |
| 49 | static void s_uacons (int); |
| 50 | |
| 51 | #ifdef OBJ_ELF |
| 52 | static void sh_elf_cons (int); |
| 53 | |
| 54 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */ |
| 55 | #endif |
| 56 | |
| 57 | static void |
| 58 | big (int ignore ATTRIBUTE_UNUSED) |
| 59 | { |
| 60 | if (! target_big_endian) |
| 61 | as_bad (_("directive .big encountered when option -big required")); |
| 62 | |
| 63 | /* Stop further messages. */ |
| 64 | target_big_endian = 1; |
| 65 | } |
| 66 | |
| 67 | static void |
| 68 | little (int ignore ATTRIBUTE_UNUSED) |
| 69 | { |
| 70 | if (target_big_endian) |
| 71 | as_bad (_("directive .little encountered when option -little required")); |
| 72 | |
| 73 | /* Stop further messages. */ |
| 74 | target_big_endian = 0; |
| 75 | } |
| 76 | |
| 77 | /* This table describes all the machine specific pseudo-ops the assembler |
| 78 | has to support. The fields are: |
| 79 | pseudo-op name without dot |
| 80 | function to call to execute this pseudo-op |
| 81 | Integer arg to pass to the function. */ |
| 82 | |
| 83 | const pseudo_typeS md_pseudo_table[] = |
| 84 | { |
| 85 | #ifdef OBJ_ELF |
| 86 | {"long", sh_elf_cons, 4}, |
| 87 | {"int", sh_elf_cons, 4}, |
| 88 | {"word", sh_elf_cons, 2}, |
| 89 | {"short", sh_elf_cons, 2}, |
| 90 | #else |
| 91 | {"int", cons, 4}, |
| 92 | {"word", cons, 2}, |
| 93 | #endif /* OBJ_ELF */ |
| 94 | {"big", big, 0}, |
| 95 | {"form", listing_psize, 0}, |
| 96 | {"little", little, 0}, |
| 97 | {"heading", listing_title, 0}, |
| 98 | {"import", s_ignore, 0}, |
| 99 | {"page", listing_eject, 0}, |
| 100 | {"program", s_ignore, 0}, |
| 101 | {"uses", s_uses, 0}, |
| 102 | {"uaword", s_uacons, 2}, |
| 103 | {"ualong", s_uacons, 4}, |
| 104 | {"uaquad", s_uacons, 8}, |
| 105 | {"2byte", s_uacons, 2}, |
| 106 | {"4byte", s_uacons, 4}, |
| 107 | {"8byte", s_uacons, 8}, |
| 108 | {0, 0, 0} |
| 109 | }; |
| 110 | |
| 111 | int sh_relax; /* set if -relax seen */ |
| 112 | |
| 113 | /* Whether -small was seen. */ |
| 114 | |
| 115 | int sh_small; |
| 116 | |
| 117 | /* Flag to generate relocations against symbol values for local symbols. */ |
| 118 | |
| 119 | static int dont_adjust_reloc_32; |
| 120 | |
| 121 | /* Flag to indicate that '$' is allowed as a register prefix. */ |
| 122 | |
| 123 | static int allow_dollar_register_prefix; |
| 124 | |
| 125 | /* Preset architecture set, if given; zero otherwise. */ |
| 126 | |
| 127 | static unsigned int preset_target_arch; |
| 128 | |
| 129 | /* The bit mask of architectures that could |
| 130 | accommodate the insns seen so far. */ |
| 131 | static unsigned int valid_arch; |
| 132 | |
| 133 | #ifdef OBJ_ELF |
| 134 | /* Whether --fdpic was given. */ |
| 135 | static int sh_fdpic; |
| 136 | #endif |
| 137 | |
| 138 | const char EXP_CHARS[] = "eE"; |
| 139 | |
| 140 | /* Chars that mean this number is a floating point constant. */ |
| 141 | /* As in 0f12.456 */ |
| 142 | /* or 0d1.2345e12 */ |
| 143 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
| 144 | |
| 145 | #define C(a,b) ENCODE_RELAX(a,b) |
| 146 | |
| 147 | #define ENCODE_RELAX(what,length) (((what) << 4) + (length)) |
| 148 | #define GET_WHAT(x) ((x>>4)) |
| 149 | |
| 150 | /* These are the three types of relaxable instruction. */ |
| 151 | /* These are the types of relaxable instructions; except for END which is |
| 152 | a marker. */ |
| 153 | #define COND_JUMP 1 |
| 154 | #define COND_JUMP_DELAY 2 |
| 155 | #define UNCOND_JUMP 3 |
| 156 | |
| 157 | #define END 4 |
| 158 | |
| 159 | #define UNDEF_DISP 0 |
| 160 | #define COND8 1 |
| 161 | #define COND12 2 |
| 162 | #define COND32 3 |
| 163 | #define UNDEF_WORD_DISP 4 |
| 164 | |
| 165 | #define UNCOND12 1 |
| 166 | #define UNCOND32 2 |
| 167 | |
| 168 | /* Branch displacements are from the address of the branch plus |
| 169 | four, thus all minimum and maximum values have 4 added to them. */ |
| 170 | #define COND8_F 258 |
| 171 | #define COND8_M -252 |
| 172 | #define COND8_LENGTH 2 |
| 173 | |
| 174 | /* There is one extra instruction before the branch, so we must add |
| 175 | two more bytes to account for it. */ |
| 176 | #define COND12_F 4100 |
| 177 | #define COND12_M -4090 |
| 178 | #define COND12_LENGTH 6 |
| 179 | |
| 180 | #define COND12_DELAY_LENGTH 4 |
| 181 | |
| 182 | /* ??? The minimum and maximum values are wrong, but this does not matter |
| 183 | since this relocation type is not supported yet. */ |
| 184 | #define COND32_F (1<<30) |
| 185 | #define COND32_M -(1<<30) |
| 186 | #define COND32_LENGTH 14 |
| 187 | |
| 188 | #define UNCOND12_F 4098 |
| 189 | #define UNCOND12_M -4092 |
| 190 | #define UNCOND12_LENGTH 2 |
| 191 | |
| 192 | /* ??? The minimum and maximum values are wrong, but this does not matter |
| 193 | since this relocation type is not supported yet. */ |
| 194 | #define UNCOND32_F (1<<30) |
| 195 | #define UNCOND32_M -(1<<30) |
| 196 | #define UNCOND32_LENGTH 14 |
| 197 | |
| 198 | #define EMPTY { 0, 0, 0, 0 } |
| 199 | |
| 200 | const relax_typeS md_relax_table[C (END, 0)] = { |
| 201 | EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, |
| 202 | EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, |
| 203 | |
| 204 | EMPTY, |
| 205 | /* C (COND_JUMP, COND8) */ |
| 206 | { COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP, COND12) }, |
| 207 | /* C (COND_JUMP, COND12) */ |
| 208 | { COND12_F, COND12_M, COND12_LENGTH, C (COND_JUMP, COND32), }, |
| 209 | /* C (COND_JUMP, COND32) */ |
| 210 | { COND32_F, COND32_M, COND32_LENGTH, 0, }, |
| 211 | /* C (COND_JUMP, UNDEF_WORD_DISP) */ |
| 212 | { 0, 0, COND32_LENGTH, 0, }, |
| 213 | EMPTY, EMPTY, EMPTY, |
| 214 | EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, |
| 215 | |
| 216 | EMPTY, |
| 217 | /* C (COND_JUMP_DELAY, COND8) */ |
| 218 | { COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP_DELAY, COND12) }, |
| 219 | /* C (COND_JUMP_DELAY, COND12) */ |
| 220 | { COND12_F, COND12_M, COND12_DELAY_LENGTH, C (COND_JUMP_DELAY, COND32), }, |
| 221 | /* C (COND_JUMP_DELAY, COND32) */ |
| 222 | { COND32_F, COND32_M, COND32_LENGTH, 0, }, |
| 223 | /* C (COND_JUMP_DELAY, UNDEF_WORD_DISP) */ |
| 224 | { 0, 0, COND32_LENGTH, 0, }, |
| 225 | EMPTY, EMPTY, EMPTY, |
| 226 | EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, |
| 227 | |
| 228 | EMPTY, |
| 229 | /* C (UNCOND_JUMP, UNCOND12) */ |
| 230 | { UNCOND12_F, UNCOND12_M, UNCOND12_LENGTH, C (UNCOND_JUMP, UNCOND32), }, |
| 231 | /* C (UNCOND_JUMP, UNCOND32) */ |
| 232 | { UNCOND32_F, UNCOND32_M, UNCOND32_LENGTH, 0, }, |
| 233 | EMPTY, |
| 234 | /* C (UNCOND_JUMP, UNDEF_WORD_DISP) */ |
| 235 | { 0, 0, UNCOND32_LENGTH, 0, }, |
| 236 | EMPTY, EMPTY, EMPTY, |
| 237 | EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, |
| 238 | |
| 239 | }; |
| 240 | |
| 241 | #undef EMPTY |
| 242 | |
| 243 | static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ |
| 244 | |
| 245 | \f |
| 246 | #ifdef OBJ_ELF |
| 247 | /* Determine whether the symbol needs any kind of PIC relocation. */ |
| 248 | |
| 249 | inline static int |
| 250 | sh_PIC_related_p (symbolS *sym) |
| 251 | { |
| 252 | expressionS *exp; |
| 253 | |
| 254 | if (! sym) |
| 255 | return 0; |
| 256 | |
| 257 | if (sym == GOT_symbol) |
| 258 | return 1; |
| 259 | |
| 260 | exp = symbol_get_value_expression (sym); |
| 261 | |
| 262 | return (exp->X_op == O_PIC_reloc |
| 263 | || sh_PIC_related_p (exp->X_add_symbol) |
| 264 | || sh_PIC_related_p (exp->X_op_symbol)); |
| 265 | } |
| 266 | |
| 267 | /* Determine the relocation type to be used to represent the |
| 268 | expression, that may be rearranged. */ |
| 269 | |
| 270 | static int |
| 271 | sh_check_fixup (expressionS *main_exp, bfd_reloc_code_real_type *r_type_p) |
| 272 | { |
| 273 | expressionS *exp = main_exp; |
| 274 | |
| 275 | /* This is here for backward-compatibility only. GCC used to generated: |
| 276 | |
| 277 | f@PLT + . - (.LPCS# + 2) |
| 278 | |
| 279 | but we'd rather be able to handle this as a PIC-related reference |
| 280 | plus/minus a symbol. However, gas' parser gives us: |
| 281 | |
| 282 | O_subtract (O_add (f@PLT, .), .LPCS#+2) |
| 283 | |
| 284 | so we attempt to transform this into: |
| 285 | |
| 286 | O_subtract (f@PLT, O_subtract (.LPCS#+2, .)) |
| 287 | |
| 288 | which we can handle simply below. */ |
| 289 | if (exp->X_op == O_subtract) |
| 290 | { |
| 291 | if (sh_PIC_related_p (exp->X_op_symbol)) |
| 292 | return 1; |
| 293 | |
| 294 | exp = symbol_get_value_expression (exp->X_add_symbol); |
| 295 | |
| 296 | if (exp && sh_PIC_related_p (exp->X_op_symbol)) |
| 297 | return 1; |
| 298 | |
| 299 | if (exp && exp->X_op == O_add |
| 300 | && sh_PIC_related_p (exp->X_add_symbol)) |
| 301 | { |
| 302 | symbolS *sym = exp->X_add_symbol; |
| 303 | |
| 304 | exp->X_op = O_subtract; |
| 305 | exp->X_add_symbol = main_exp->X_op_symbol; |
| 306 | |
| 307 | main_exp->X_op_symbol = main_exp->X_add_symbol; |
| 308 | main_exp->X_add_symbol = sym; |
| 309 | |
| 310 | main_exp->X_add_number += exp->X_add_number; |
| 311 | exp->X_add_number = 0; |
| 312 | } |
| 313 | |
| 314 | exp = main_exp; |
| 315 | } |
| 316 | else if (exp->X_op == O_add && sh_PIC_related_p (exp->X_op_symbol)) |
| 317 | return 1; |
| 318 | |
| 319 | if (exp->X_op == O_symbol || exp->X_op == O_add || exp->X_op == O_subtract) |
| 320 | { |
| 321 | if (exp->X_add_symbol && exp->X_add_symbol == GOT_symbol) |
| 322 | { |
| 323 | *r_type_p = BFD_RELOC_SH_GOTPC; |
| 324 | return 0; |
| 325 | } |
| 326 | exp = symbol_get_value_expression (exp->X_add_symbol); |
| 327 | if (! exp) |
| 328 | return 0; |
| 329 | } |
| 330 | |
| 331 | if (exp->X_op == O_PIC_reloc) |
| 332 | { |
| 333 | switch (*r_type_p) |
| 334 | { |
| 335 | case BFD_RELOC_NONE: |
| 336 | case BFD_RELOC_UNUSED: |
| 337 | *r_type_p = exp->X_md; |
| 338 | break; |
| 339 | |
| 340 | case BFD_RELOC_SH_DISP20: |
| 341 | switch (exp->X_md) |
| 342 | { |
| 343 | case BFD_RELOC_32_GOT_PCREL: |
| 344 | *r_type_p = BFD_RELOC_SH_GOT20; |
| 345 | break; |
| 346 | |
| 347 | case BFD_RELOC_32_GOTOFF: |
| 348 | *r_type_p = BFD_RELOC_SH_GOTOFF20; |
| 349 | break; |
| 350 | |
| 351 | case BFD_RELOC_SH_GOTFUNCDESC: |
| 352 | *r_type_p = BFD_RELOC_SH_GOTFUNCDESC20; |
| 353 | break; |
| 354 | |
| 355 | case BFD_RELOC_SH_GOTOFFFUNCDESC: |
| 356 | *r_type_p = BFD_RELOC_SH_GOTOFFFUNCDESC20; |
| 357 | break; |
| 358 | |
| 359 | default: |
| 360 | abort (); |
| 361 | } |
| 362 | break; |
| 363 | |
| 364 | default: |
| 365 | abort (); |
| 366 | } |
| 367 | if (exp == main_exp) |
| 368 | exp->X_op = O_symbol; |
| 369 | else |
| 370 | { |
| 371 | main_exp->X_add_symbol = exp->X_add_symbol; |
| 372 | main_exp->X_add_number += exp->X_add_number; |
| 373 | } |
| 374 | } |
| 375 | else |
| 376 | return (sh_PIC_related_p (exp->X_add_symbol) |
| 377 | || sh_PIC_related_p (exp->X_op_symbol)); |
| 378 | |
| 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | /* Add expression EXP of SIZE bytes to offset OFF of fragment FRAG. */ |
| 383 | |
| 384 | void |
| 385 | sh_cons_fix_new (fragS *frag, int off, int size, expressionS *exp, |
| 386 | bfd_reloc_code_real_type r_type) |
| 387 | { |
| 388 | r_type = BFD_RELOC_UNUSED; |
| 389 | |
| 390 | if (sh_check_fixup (exp, &r_type)) |
| 391 | as_bad (_("Invalid PIC expression.")); |
| 392 | |
| 393 | if (r_type == BFD_RELOC_UNUSED) |
| 394 | switch (size) |
| 395 | { |
| 396 | case 1: |
| 397 | r_type = BFD_RELOC_8; |
| 398 | break; |
| 399 | |
| 400 | case 2: |
| 401 | r_type = BFD_RELOC_16; |
| 402 | break; |
| 403 | |
| 404 | case 4: |
| 405 | r_type = BFD_RELOC_32; |
| 406 | break; |
| 407 | |
| 408 | case 8: |
| 409 | r_type = BFD_RELOC_64; |
| 410 | break; |
| 411 | |
| 412 | default: |
| 413 | goto error; |
| 414 | } |
| 415 | else if (size != 4) |
| 416 | { |
| 417 | error: |
| 418 | as_bad (_("unsupported BFD relocation size %u"), size); |
| 419 | r_type = BFD_RELOC_UNUSED; |
| 420 | } |
| 421 | |
| 422 | fix_new_exp (frag, off, size, exp, 0, r_type); |
| 423 | } |
| 424 | |
| 425 | /* The regular cons() function, that reads constants, doesn't support |
| 426 | suffixes such as @GOT, @GOTOFF and @PLT, that generate |
| 427 | machine-specific relocation types. So we must define it here. */ |
| 428 | /* Clobbers input_line_pointer, checks end-of-line. */ |
| 429 | /* NBYTES 1=.byte, 2=.word, 4=.long */ |
| 430 | static void |
| 431 | sh_elf_cons (int nbytes) |
| 432 | { |
| 433 | expressionS exp; |
| 434 | |
| 435 | if (is_it_end_of_statement ()) |
| 436 | { |
| 437 | demand_empty_rest_of_line (); |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | #ifdef md_cons_align |
| 442 | md_cons_align (nbytes); |
| 443 | #endif |
| 444 | |
| 445 | do |
| 446 | { |
| 447 | expression (&exp); |
| 448 | emit_expr (&exp, (unsigned int) nbytes); |
| 449 | } |
| 450 | while (*input_line_pointer++ == ','); |
| 451 | |
| 452 | input_line_pointer--; /* Put terminator back into stream. */ |
| 453 | if (*input_line_pointer == '#' || *input_line_pointer == '!') |
| 454 | { |
| 455 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]); |
| 456 | } |
| 457 | else |
| 458 | demand_empty_rest_of_line (); |
| 459 | } |
| 460 | |
| 461 | /* The regular frag_offset_fixed_p doesn't work for rs_align_test |
| 462 | frags. */ |
| 463 | |
| 464 | static bfd_boolean |
| 465 | align_test_frag_offset_fixed_p (const fragS *frag1, const fragS *frag2, |
| 466 | bfd_vma *offset) |
| 467 | { |
| 468 | const fragS *frag; |
| 469 | bfd_vma off; |
| 470 | |
| 471 | /* Start with offset initialised to difference between the two frags. |
| 472 | Prior to assigning frag addresses this will be zero. */ |
| 473 | off = frag1->fr_address - frag2->fr_address; |
| 474 | if (frag1 == frag2) |
| 475 | { |
| 476 | *offset = off; |
| 477 | return TRUE; |
| 478 | } |
| 479 | |
| 480 | /* Maybe frag2 is after frag1. */ |
| 481 | frag = frag1; |
| 482 | while (frag->fr_type == rs_fill |
| 483 | || frag->fr_type == rs_align_test) |
| 484 | { |
| 485 | if (frag->fr_type == rs_fill) |
| 486 | off += frag->fr_fix + frag->fr_offset * frag->fr_var; |
| 487 | else |
| 488 | off += frag->fr_fix; |
| 489 | frag = frag->fr_next; |
| 490 | if (frag == NULL) |
| 491 | break; |
| 492 | if (frag == frag2) |
| 493 | { |
| 494 | *offset = off; |
| 495 | return TRUE; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | /* Maybe frag1 is after frag2. */ |
| 500 | off = frag1->fr_address - frag2->fr_address; |
| 501 | frag = frag2; |
| 502 | while (frag->fr_type == rs_fill |
| 503 | || frag->fr_type == rs_align_test) |
| 504 | { |
| 505 | if (frag->fr_type == rs_fill) |
| 506 | off -= frag->fr_fix + frag->fr_offset * frag->fr_var; |
| 507 | else |
| 508 | off -= frag->fr_fix; |
| 509 | frag = frag->fr_next; |
| 510 | if (frag == NULL) |
| 511 | break; |
| 512 | if (frag == frag1) |
| 513 | { |
| 514 | *offset = off; |
| 515 | return TRUE; |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | return FALSE; |
| 520 | } |
| 521 | |
| 522 | /* Optimize a difference of symbols which have rs_align_test frag if |
| 523 | possible. */ |
| 524 | |
| 525 | int |
| 526 | sh_optimize_expr (expressionS *l, operatorT op, expressionS *r) |
| 527 | { |
| 528 | bfd_vma frag_off; |
| 529 | |
| 530 | if (op == O_subtract |
| 531 | && l->X_op == O_symbol |
| 532 | && r->X_op == O_symbol |
| 533 | && S_GET_SEGMENT (l->X_add_symbol) == S_GET_SEGMENT (r->X_add_symbol) |
| 534 | && (SEG_NORMAL (S_GET_SEGMENT (l->X_add_symbol)) |
| 535 | || r->X_add_symbol == l->X_add_symbol) |
| 536 | && align_test_frag_offset_fixed_p (symbol_get_frag (l->X_add_symbol), |
| 537 | symbol_get_frag (r->X_add_symbol), |
| 538 | &frag_off)) |
| 539 | { |
| 540 | offsetT symval_diff = S_GET_VALUE (l->X_add_symbol) |
| 541 | - S_GET_VALUE (r->X_add_symbol); |
| 542 | subtract_from_result (l, r->X_add_number, r->X_extrabit); |
| 543 | subtract_from_result (l, frag_off / OCTETS_PER_BYTE, 0); |
| 544 | add_to_result (l, symval_diff, symval_diff < 0); |
| 545 | l->X_op = O_constant; |
| 546 | l->X_add_symbol = 0; |
| 547 | return 1; |
| 548 | } |
| 549 | return 0; |
| 550 | } |
| 551 | #endif /* OBJ_ELF */ |
| 552 | \f |
| 553 | /* This function is called once, at assembler startup time. This should |
| 554 | set up all the tables, etc that the MD part of the assembler needs. */ |
| 555 | |
| 556 | void |
| 557 | md_begin (void) |
| 558 | { |
| 559 | const sh_opcode_info *opcode; |
| 560 | const char *prev_name = ""; |
| 561 | unsigned int target_arch; |
| 562 | |
| 563 | target_arch |
| 564 | = preset_target_arch ? preset_target_arch : arch_sh_up & ~arch_sh_has_dsp; |
| 565 | valid_arch = target_arch; |
| 566 | |
| 567 | opcode_hash_control = hash_new (); |
| 568 | |
| 569 | /* Insert unique names into hash table. */ |
| 570 | for (opcode = sh_table; opcode->name; opcode++) |
| 571 | { |
| 572 | if (strcmp (prev_name, opcode->name) != 0) |
| 573 | { |
| 574 | if (!SH_MERGE_ARCH_SET_VALID (opcode->arch, target_arch)) |
| 575 | continue; |
| 576 | prev_name = opcode->name; |
| 577 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); |
| 578 | } |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | static int reg_m; |
| 583 | static int reg_n; |
| 584 | static int reg_x, reg_y; |
| 585 | static int reg_efg; |
| 586 | static int reg_b; |
| 587 | |
| 588 | #define IDENT_CHAR(c) (ISALNUM (c) || (c) == '_') |
| 589 | |
| 590 | /* Try to parse a reg name. Return the number of chars consumed. */ |
| 591 | |
| 592 | static unsigned int |
| 593 | parse_reg_without_prefix (char *src, sh_arg_type *mode, int *reg) |
| 594 | { |
| 595 | char l0 = TOLOWER (src[0]); |
| 596 | char l1 = l0 ? TOLOWER (src[1]) : 0; |
| 597 | |
| 598 | /* We use ! IDENT_CHAR for the next character after the register name, to |
| 599 | make sure that we won't accidentally recognize a symbol name such as |
| 600 | 'sram' or sr_ram as being a reference to the register 'sr'. */ |
| 601 | |
| 602 | if (l0 == 'r') |
| 603 | { |
| 604 | if (l1 == '1') |
| 605 | { |
| 606 | if (src[2] >= '0' && src[2] <= '5' |
| 607 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 608 | { |
| 609 | *mode = A_REG_N; |
| 610 | *reg = 10 + src[2] - '0'; |
| 611 | return 3; |
| 612 | } |
| 613 | } |
| 614 | if (l1 >= '0' && l1 <= '9' |
| 615 | && ! IDENT_CHAR ((unsigned char) src[2])) |
| 616 | { |
| 617 | *mode = A_REG_N; |
| 618 | *reg = (l1 - '0'); |
| 619 | return 2; |
| 620 | } |
| 621 | if (l1 >= '0' && l1 <= '7' && strncasecmp (&src[2], "_bank", 5) == 0 |
| 622 | && ! IDENT_CHAR ((unsigned char) src[7])) |
| 623 | { |
| 624 | *mode = A_REG_B; |
| 625 | *reg = (l1 - '0'); |
| 626 | return 7; |
| 627 | } |
| 628 | |
| 629 | if (l1 == 'e' && ! IDENT_CHAR ((unsigned char) src[2])) |
| 630 | { |
| 631 | *mode = A_RE; |
| 632 | return 2; |
| 633 | } |
| 634 | if (l1 == 's' && ! IDENT_CHAR ((unsigned char) src[2])) |
| 635 | { |
| 636 | *mode = A_RS; |
| 637 | return 2; |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | if (l0 == 'a') |
| 642 | { |
| 643 | if (l1 == '0') |
| 644 | { |
| 645 | if (! IDENT_CHAR ((unsigned char) src[2])) |
| 646 | { |
| 647 | *mode = DSP_REG_N; |
| 648 | *reg = A_A0_NUM; |
| 649 | return 2; |
| 650 | } |
| 651 | if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3])) |
| 652 | { |
| 653 | *mode = DSP_REG_N; |
| 654 | *reg = A_A0G_NUM; |
| 655 | return 3; |
| 656 | } |
| 657 | } |
| 658 | if (l1 == '1') |
| 659 | { |
| 660 | if (! IDENT_CHAR ((unsigned char) src[2])) |
| 661 | { |
| 662 | *mode = DSP_REG_N; |
| 663 | *reg = A_A1_NUM; |
| 664 | return 2; |
| 665 | } |
| 666 | if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3])) |
| 667 | { |
| 668 | *mode = DSP_REG_N; |
| 669 | *reg = A_A1G_NUM; |
| 670 | return 3; |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | if (l1 == 'x' && src[2] >= '0' && src[2] <= '1' |
| 675 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 676 | { |
| 677 | *mode = A_REG_N; |
| 678 | *reg = 4 + (l1 - '0'); |
| 679 | return 3; |
| 680 | } |
| 681 | if (l1 == 'y' && src[2] >= '0' && src[2] <= '1' |
| 682 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 683 | { |
| 684 | *mode = A_REG_N; |
| 685 | *reg = 6 + (l1 - '0'); |
| 686 | return 3; |
| 687 | } |
| 688 | if (l1 == 's' && src[2] >= '0' && src[2] <= '3' |
| 689 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 690 | { |
| 691 | int n = l1 - '0'; |
| 692 | |
| 693 | *mode = A_REG_N; |
| 694 | *reg = n | ((~n & 2) << 1); |
| 695 | return 3; |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | if (l0 == 'i' && l1 && ! IDENT_CHAR ((unsigned char) src[2])) |
| 700 | { |
| 701 | if (l1 == 's') |
| 702 | { |
| 703 | *mode = A_REG_N; |
| 704 | *reg = 8; |
| 705 | return 2; |
| 706 | } |
| 707 | if (l1 == 'x') |
| 708 | { |
| 709 | *mode = A_REG_N; |
| 710 | *reg = 8; |
| 711 | return 2; |
| 712 | } |
| 713 | if (l1 == 'y') |
| 714 | { |
| 715 | *mode = A_REG_N; |
| 716 | *reg = 9; |
| 717 | return 2; |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | if (l0 == 'x' && l1 >= '0' && l1 <= '1' |
| 722 | && ! IDENT_CHAR ((unsigned char) src[2])) |
| 723 | { |
| 724 | *mode = DSP_REG_N; |
| 725 | *reg = A_X0_NUM + l1 - '0'; |
| 726 | return 2; |
| 727 | } |
| 728 | |
| 729 | if (l0 == 'y' && l1 >= '0' && l1 <= '1' |
| 730 | && ! IDENT_CHAR ((unsigned char) src[2])) |
| 731 | { |
| 732 | *mode = DSP_REG_N; |
| 733 | *reg = A_Y0_NUM + l1 - '0'; |
| 734 | return 2; |
| 735 | } |
| 736 | |
| 737 | if (l0 == 'm' && l1 >= '0' && l1 <= '1' |
| 738 | && ! IDENT_CHAR ((unsigned char) src[2])) |
| 739 | { |
| 740 | *mode = DSP_REG_N; |
| 741 | *reg = l1 == '0' ? A_M0_NUM : A_M1_NUM; |
| 742 | return 2; |
| 743 | } |
| 744 | |
| 745 | if (l0 == 's' |
| 746 | && l1 == 's' |
| 747 | && TOLOWER (src[2]) == 'r' && ! IDENT_CHAR ((unsigned char) src[3])) |
| 748 | { |
| 749 | *mode = A_SSR; |
| 750 | return 3; |
| 751 | } |
| 752 | |
| 753 | if (l0 == 's' && l1 == 'p' && TOLOWER (src[2]) == 'c' |
| 754 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 755 | { |
| 756 | *mode = A_SPC; |
| 757 | return 3; |
| 758 | } |
| 759 | |
| 760 | if (l0 == 's' && l1 == 'g' && TOLOWER (src[2]) == 'r' |
| 761 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 762 | { |
| 763 | *mode = A_SGR; |
| 764 | return 3; |
| 765 | } |
| 766 | |
| 767 | if (l0 == 'd' && l1 == 's' && TOLOWER (src[2]) == 'r' |
| 768 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 769 | { |
| 770 | *mode = A_DSR; |
| 771 | return 3; |
| 772 | } |
| 773 | |
| 774 | if (l0 == 'd' && l1 == 'b' && TOLOWER (src[2]) == 'r' |
| 775 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 776 | { |
| 777 | *mode = A_DBR; |
| 778 | return 3; |
| 779 | } |
| 780 | |
| 781 | if (l0 == 's' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2])) |
| 782 | { |
| 783 | *mode = A_SR; |
| 784 | return 2; |
| 785 | } |
| 786 | |
| 787 | if (l0 == 's' && l1 == 'p' && ! IDENT_CHAR ((unsigned char) src[2])) |
| 788 | { |
| 789 | *mode = A_REG_N; |
| 790 | *reg = 15; |
| 791 | return 2; |
| 792 | } |
| 793 | |
| 794 | if (l0 == 'p' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2])) |
| 795 | { |
| 796 | *mode = A_PR; |
| 797 | return 2; |
| 798 | } |
| 799 | if (l0 == 'p' && l1 == 'c' && ! IDENT_CHAR ((unsigned char) src[2])) |
| 800 | { |
| 801 | /* Don't use A_DISP_PC here - that would accept stuff like 'mova pc,r0' |
| 802 | and use an uninitialized immediate. */ |
| 803 | *mode = A_PC; |
| 804 | return 2; |
| 805 | } |
| 806 | if (l0 == 'g' && l1 == 'b' && TOLOWER (src[2]) == 'r' |
| 807 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 808 | { |
| 809 | *mode = A_GBR; |
| 810 | return 3; |
| 811 | } |
| 812 | if (l0 == 'v' && l1 == 'b' && TOLOWER (src[2]) == 'r' |
| 813 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 814 | { |
| 815 | *mode = A_VBR; |
| 816 | return 3; |
| 817 | } |
| 818 | |
| 819 | if (l0 == 't' && l1 == 'b' && TOLOWER (src[2]) == 'r' |
| 820 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 821 | { |
| 822 | *mode = A_TBR; |
| 823 | return 3; |
| 824 | } |
| 825 | if (l0 == 'm' && l1 == 'a' && TOLOWER (src[2]) == 'c' |
| 826 | && ! IDENT_CHAR ((unsigned char) src[4])) |
| 827 | { |
| 828 | if (TOLOWER (src[3]) == 'l') |
| 829 | { |
| 830 | *mode = A_MACL; |
| 831 | return 4; |
| 832 | } |
| 833 | if (TOLOWER (src[3]) == 'h') |
| 834 | { |
| 835 | *mode = A_MACH; |
| 836 | return 4; |
| 837 | } |
| 838 | } |
| 839 | if (l0 == 'm' && l1 == 'o' && TOLOWER (src[2]) == 'd' |
| 840 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 841 | { |
| 842 | *mode = A_MOD; |
| 843 | return 3; |
| 844 | } |
| 845 | if (l0 == 'f' && l1 == 'r') |
| 846 | { |
| 847 | if (src[2] == '1') |
| 848 | { |
| 849 | if (src[3] >= '0' && src[3] <= '5' |
| 850 | && ! IDENT_CHAR ((unsigned char) src[4])) |
| 851 | { |
| 852 | *mode = F_REG_N; |
| 853 | *reg = 10 + src[3] - '0'; |
| 854 | return 4; |
| 855 | } |
| 856 | } |
| 857 | if (src[2] >= '0' && src[2] <= '9' |
| 858 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 859 | { |
| 860 | *mode = F_REG_N; |
| 861 | *reg = (src[2] - '0'); |
| 862 | return 3; |
| 863 | } |
| 864 | } |
| 865 | if (l0 == 'd' && l1 == 'r') |
| 866 | { |
| 867 | if (src[2] == '1') |
| 868 | { |
| 869 | if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1) |
| 870 | && ! IDENT_CHAR ((unsigned char) src[4])) |
| 871 | { |
| 872 | *mode = D_REG_N; |
| 873 | *reg = 10 + src[3] - '0'; |
| 874 | return 4; |
| 875 | } |
| 876 | } |
| 877 | if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1) |
| 878 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 879 | { |
| 880 | *mode = D_REG_N; |
| 881 | *reg = (src[2] - '0'); |
| 882 | return 3; |
| 883 | } |
| 884 | } |
| 885 | if (l0 == 'x' && l1 == 'd') |
| 886 | { |
| 887 | if (src[2] == '1') |
| 888 | { |
| 889 | if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1) |
| 890 | && ! IDENT_CHAR ((unsigned char) src[4])) |
| 891 | { |
| 892 | *mode = X_REG_N; |
| 893 | *reg = 11 + src[3] - '0'; |
| 894 | return 4; |
| 895 | } |
| 896 | } |
| 897 | if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1) |
| 898 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 899 | { |
| 900 | *mode = X_REG_N; |
| 901 | *reg = (src[2] - '0') + 1; |
| 902 | return 3; |
| 903 | } |
| 904 | } |
| 905 | if (l0 == 'f' && l1 == 'v') |
| 906 | { |
| 907 | if (src[2] == '1'&& src[3] == '2' && ! IDENT_CHAR ((unsigned char) src[4])) |
| 908 | { |
| 909 | *mode = V_REG_N; |
| 910 | *reg = 12; |
| 911 | return 4; |
| 912 | } |
| 913 | if ((src[2] == '0' || src[2] == '4' || src[2] == '8') |
| 914 | && ! IDENT_CHAR ((unsigned char) src[3])) |
| 915 | { |
| 916 | *mode = V_REG_N; |
| 917 | *reg = (src[2] - '0'); |
| 918 | return 3; |
| 919 | } |
| 920 | } |
| 921 | if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 'u' |
| 922 | && TOLOWER (src[3]) == 'l' |
| 923 | && ! IDENT_CHAR ((unsigned char) src[4])) |
| 924 | { |
| 925 | *mode = FPUL_N; |
| 926 | return 4; |
| 927 | } |
| 928 | |
| 929 | if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 's' |
| 930 | && TOLOWER (src[3]) == 'c' |
| 931 | && TOLOWER (src[4]) == 'r' && ! IDENT_CHAR ((unsigned char) src[5])) |
| 932 | { |
| 933 | *mode = FPSCR_N; |
| 934 | return 5; |
| 935 | } |
| 936 | |
| 937 | if (l0 == 'x' && l1 == 'm' && TOLOWER (src[2]) == 't' |
| 938 | && TOLOWER (src[3]) == 'r' |
| 939 | && TOLOWER (src[4]) == 'x' && ! IDENT_CHAR ((unsigned char) src[5])) |
| 940 | { |
| 941 | *mode = XMTRX_M4; |
| 942 | return 5; |
| 943 | } |
| 944 | |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | /* Like parse_reg_without_prefix, but this version supports |
| 949 | $-prefixed register names if enabled by the user. */ |
| 950 | |
| 951 | static unsigned int |
| 952 | parse_reg (char *src, sh_arg_type *mode, int *reg) |
| 953 | { |
| 954 | unsigned int prefix; |
| 955 | unsigned int consumed; |
| 956 | |
| 957 | if (src[0] == '$') |
| 958 | { |
| 959 | if (allow_dollar_register_prefix) |
| 960 | { |
| 961 | src ++; |
| 962 | prefix = 1; |
| 963 | } |
| 964 | else |
| 965 | return 0; |
| 966 | } |
| 967 | else |
| 968 | prefix = 0; |
| 969 | |
| 970 | consumed = parse_reg_without_prefix (src, mode, reg); |
| 971 | |
| 972 | if (consumed == 0) |
| 973 | return 0; |
| 974 | |
| 975 | return consumed + prefix; |
| 976 | } |
| 977 | |
| 978 | static char * |
| 979 | parse_exp (char *s, sh_operand_info *op) |
| 980 | { |
| 981 | char *save; |
| 982 | char *new_pointer; |
| 983 | |
| 984 | save = input_line_pointer; |
| 985 | input_line_pointer = s; |
| 986 | expression (&op->immediate); |
| 987 | if (op->immediate.X_op == O_absent) |
| 988 | as_bad (_("missing operand")); |
| 989 | new_pointer = input_line_pointer; |
| 990 | input_line_pointer = save; |
| 991 | return new_pointer; |
| 992 | } |
| 993 | |
| 994 | /* The many forms of operand: |
| 995 | |
| 996 | Rn Register direct |
| 997 | @Rn Register indirect |
| 998 | @Rn+ Autoincrement |
| 999 | @-Rn Autodecrement |
| 1000 | @(disp:4,Rn) |
| 1001 | @(disp:8,GBR) |
| 1002 | @(disp:8,PC) |
| 1003 | |
| 1004 | @(R0,Rn) |
| 1005 | @(R0,GBR) |
| 1006 | |
| 1007 | disp:8 |
| 1008 | disp:12 |
| 1009 | #imm8 |
| 1010 | pr, gbr, vbr, macl, mach |
| 1011 | */ |
| 1012 | |
| 1013 | static char * |
| 1014 | parse_at (char *src, sh_operand_info *op) |
| 1015 | { |
| 1016 | int len; |
| 1017 | sh_arg_type mode; |
| 1018 | src++; |
| 1019 | if (src[0] == '@') |
| 1020 | { |
| 1021 | src = parse_at (src, op); |
| 1022 | if (op->type == A_DISP_TBR) |
| 1023 | op->type = A_DISP2_TBR; |
| 1024 | else |
| 1025 | as_bad (_("illegal double indirection")); |
| 1026 | } |
| 1027 | else if (src[0] == '-') |
| 1028 | { |
| 1029 | /* Must be predecrement. */ |
| 1030 | src++; |
| 1031 | |
| 1032 | len = parse_reg (src, &mode, &(op->reg)); |
| 1033 | if (mode != A_REG_N) |
| 1034 | as_bad (_("illegal register after @-")); |
| 1035 | |
| 1036 | op->type = A_DEC_N; |
| 1037 | src += len; |
| 1038 | } |
| 1039 | else if (src[0] == '(') |
| 1040 | { |
| 1041 | /* Could be @(disp, rn), @(disp, gbr), @(disp, pc), @(r0, gbr) or |
| 1042 | @(r0, rn). */ |
| 1043 | src++; |
| 1044 | len = parse_reg (src, &mode, &(op->reg)); |
| 1045 | if (len && mode == A_REG_N) |
| 1046 | { |
| 1047 | src += len; |
| 1048 | if (op->reg != 0) |
| 1049 | { |
| 1050 | as_bad (_("must be @(r0,...)")); |
| 1051 | } |
| 1052 | if (src[0] == ',') |
| 1053 | { |
| 1054 | src++; |
| 1055 | /* Now can be rn or gbr. */ |
| 1056 | len = parse_reg (src, &mode, &(op->reg)); |
| 1057 | } |
| 1058 | else |
| 1059 | { |
| 1060 | len = 0; |
| 1061 | } |
| 1062 | if (len) |
| 1063 | { |
| 1064 | if (mode == A_GBR) |
| 1065 | { |
| 1066 | op->type = A_R0_GBR; |
| 1067 | } |
| 1068 | else if (mode == A_REG_N) |
| 1069 | { |
| 1070 | op->type = A_IND_R0_REG_N; |
| 1071 | } |
| 1072 | else |
| 1073 | { |
| 1074 | as_bad (_("syntax error in @(r0,...)")); |
| 1075 | } |
| 1076 | } |
| 1077 | else |
| 1078 | { |
| 1079 | as_bad (_("syntax error in @(r0...)")); |
| 1080 | } |
| 1081 | } |
| 1082 | else |
| 1083 | { |
| 1084 | /* Must be an @(disp,.. thing). */ |
| 1085 | src = parse_exp (src, op); |
| 1086 | if (src[0] == ',') |
| 1087 | src++; |
| 1088 | /* Now can be rn, gbr or pc. */ |
| 1089 | len = parse_reg (src, &mode, &op->reg); |
| 1090 | if (len) |
| 1091 | { |
| 1092 | if (mode == A_REG_N) |
| 1093 | { |
| 1094 | op->type = A_DISP_REG_N; |
| 1095 | } |
| 1096 | else if (mode == A_GBR) |
| 1097 | { |
| 1098 | op->type = A_DISP_GBR; |
| 1099 | } |
| 1100 | else if (mode == A_TBR) |
| 1101 | { |
| 1102 | op->type = A_DISP_TBR; |
| 1103 | } |
| 1104 | else if (mode == A_PC) |
| 1105 | { |
| 1106 | /* We want @(expr, pc) to uniformly address . + expr, |
| 1107 | no matter if expr is a constant, or a more complex |
| 1108 | expression, e.g. sym-. or sym1-sym2. |
| 1109 | However, we also used to accept @(sym,pc) |
| 1110 | as addressing sym, i.e. meaning the same as plain sym. |
| 1111 | Some existing code does use the @(sym,pc) syntax, so |
| 1112 | we give it the old semantics for now, but warn about |
| 1113 | its use, so that users have some time to fix their code. |
| 1114 | |
| 1115 | Note that due to this backward compatibility hack, |
| 1116 | we'll get unexpected results when @(offset, pc) is used, |
| 1117 | and offset is a symbol that is set later to an an address |
| 1118 | difference, or an external symbol that is set to an |
| 1119 | address difference in another source file, so we want to |
| 1120 | eventually remove it. */ |
| 1121 | if (op->immediate.X_op == O_symbol) |
| 1122 | { |
| 1123 | op->type = A_DISP_PC; |
| 1124 | as_warn (_("Deprecated syntax.")); |
| 1125 | } |
| 1126 | else |
| 1127 | { |
| 1128 | op->type = A_DISP_PC_ABS; |
| 1129 | /* Such operands don't get corrected for PC==.+4, so |
| 1130 | make the correction here. */ |
| 1131 | op->immediate.X_add_number -= 4; |
| 1132 | } |
| 1133 | } |
| 1134 | else |
| 1135 | { |
| 1136 | as_bad (_("syntax error in @(disp,[Rn, gbr, pc])")); |
| 1137 | } |
| 1138 | } |
| 1139 | else |
| 1140 | { |
| 1141 | as_bad (_("syntax error in @(disp,[Rn, gbr, pc])")); |
| 1142 | } |
| 1143 | } |
| 1144 | src += len; |
| 1145 | if (src[0] != ')') |
| 1146 | as_bad (_("expecting )")); |
| 1147 | else |
| 1148 | src++; |
| 1149 | } |
| 1150 | else |
| 1151 | { |
| 1152 | src += parse_reg (src, &mode, &(op->reg)); |
| 1153 | if (mode != A_REG_N) |
| 1154 | as_bad (_("illegal register after @")); |
| 1155 | |
| 1156 | if (src[0] == '+') |
| 1157 | { |
| 1158 | char l0, l1; |
| 1159 | |
| 1160 | src++; |
| 1161 | l0 = TOLOWER (src[0]); |
| 1162 | l1 = TOLOWER (src[1]); |
| 1163 | |
| 1164 | if ((l0 == 'r' && l1 == '8') |
| 1165 | || (l0 == 'i' && (l1 == 'x' || l1 == 's'))) |
| 1166 | { |
| 1167 | src += 2; |
| 1168 | op->type = AX_PMOD_N; |
| 1169 | } |
| 1170 | else if ( (l0 == 'r' && l1 == '9') |
| 1171 | || (l0 == 'i' && l1 == 'y')) |
| 1172 | { |
| 1173 | src += 2; |
| 1174 | op->type = AY_PMOD_N; |
| 1175 | } |
| 1176 | else |
| 1177 | op->type = A_INC_N; |
| 1178 | } |
| 1179 | else |
| 1180 | op->type = A_IND_N; |
| 1181 | } |
| 1182 | return src; |
| 1183 | } |
| 1184 | |
| 1185 | static void |
| 1186 | get_operand (char **ptr, sh_operand_info *op) |
| 1187 | { |
| 1188 | char *src = *ptr; |
| 1189 | sh_arg_type mode = (sh_arg_type) -1; |
| 1190 | unsigned int len; |
| 1191 | |
| 1192 | if (src[0] == '#') |
| 1193 | { |
| 1194 | src++; |
| 1195 | *ptr = parse_exp (src, op); |
| 1196 | op->type = A_IMM; |
| 1197 | return; |
| 1198 | } |
| 1199 | |
| 1200 | else if (src[0] == '@') |
| 1201 | { |
| 1202 | *ptr = parse_at (src, op); |
| 1203 | return; |
| 1204 | } |
| 1205 | len = parse_reg (src, &mode, &(op->reg)); |
| 1206 | if (len) |
| 1207 | { |
| 1208 | *ptr = src + len; |
| 1209 | op->type = mode; |
| 1210 | return; |
| 1211 | } |
| 1212 | else |
| 1213 | { |
| 1214 | /* Not a reg, the only thing left is a displacement. */ |
| 1215 | *ptr = parse_exp (src, op); |
| 1216 | op->type = A_DISP_PC; |
| 1217 | return; |
| 1218 | } |
| 1219 | } |
| 1220 | |
| 1221 | static char * |
| 1222 | get_operands (sh_opcode_info *info, char *args, sh_operand_info *operand) |
| 1223 | { |
| 1224 | char *ptr = args; |
| 1225 | if (info->arg[0]) |
| 1226 | { |
| 1227 | /* The pre-processor will eliminate whitespace in front of '@' |
| 1228 | after the first argument; we may be called multiple times |
| 1229 | from assemble_ppi, so don't insist on finding whitespace here. */ |
| 1230 | if (*ptr == ' ') |
| 1231 | ptr++; |
| 1232 | |
| 1233 | get_operand (&ptr, operand + 0); |
| 1234 | if (info->arg[1]) |
| 1235 | { |
| 1236 | if (*ptr == ',') |
| 1237 | { |
| 1238 | ptr++; |
| 1239 | } |
| 1240 | get_operand (&ptr, operand + 1); |
| 1241 | /* ??? Hack: psha/pshl have a varying operand number depending on |
| 1242 | the type of the first operand. We handle this by having the |
| 1243 | three-operand version first and reducing the number of operands |
| 1244 | parsed to two if we see that the first operand is an immediate. |
| 1245 | This works because no insn with three operands has an immediate |
| 1246 | as first operand. */ |
| 1247 | if (info->arg[2] && operand[0].type != A_IMM) |
| 1248 | { |
| 1249 | if (*ptr == ',') |
| 1250 | { |
| 1251 | ptr++; |
| 1252 | } |
| 1253 | get_operand (&ptr, operand + 2); |
| 1254 | } |
| 1255 | else |
| 1256 | { |
| 1257 | operand[2].type = 0; |
| 1258 | } |
| 1259 | } |
| 1260 | else |
| 1261 | { |
| 1262 | operand[1].type = 0; |
| 1263 | operand[2].type = 0; |
| 1264 | } |
| 1265 | } |
| 1266 | else |
| 1267 | { |
| 1268 | operand[0].type = 0; |
| 1269 | operand[1].type = 0; |
| 1270 | operand[2].type = 0; |
| 1271 | } |
| 1272 | return ptr; |
| 1273 | } |
| 1274 | |
| 1275 | /* Passed a pointer to a list of opcodes which use different |
| 1276 | addressing modes, return the opcode which matches the opcodes |
| 1277 | provided. */ |
| 1278 | |
| 1279 | static sh_opcode_info * |
| 1280 | get_specific (sh_opcode_info *opcode, sh_operand_info *operands) |
| 1281 | { |
| 1282 | sh_opcode_info *this_try = opcode; |
| 1283 | const char *name = opcode->name; |
| 1284 | int n = 0; |
| 1285 | |
| 1286 | while (opcode->name) |
| 1287 | { |
| 1288 | this_try = opcode++; |
| 1289 | if ((this_try->name != name) && (strcmp (this_try->name, name) != 0)) |
| 1290 | { |
| 1291 | /* We've looked so far down the table that we've run out of |
| 1292 | opcodes with the same name. */ |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | /* Look at both operands needed by the opcodes and provided by |
| 1297 | the user - since an arg test will often fail on the same arg |
| 1298 | again and again, we'll try and test the last failing arg the |
| 1299 | first on each opcode try. */ |
| 1300 | for (n = 0; this_try->arg[n]; n++) |
| 1301 | { |
| 1302 | sh_operand_info *user = operands + n; |
| 1303 | sh_arg_type arg = this_try->arg[n]; |
| 1304 | |
| 1305 | switch (arg) |
| 1306 | { |
| 1307 | case A_DISP_PC: |
| 1308 | if (user->type == A_DISP_PC_ABS) |
| 1309 | break; |
| 1310 | /* Fall through. */ |
| 1311 | case A_IMM: |
| 1312 | case A_BDISP12: |
| 1313 | case A_BDISP8: |
| 1314 | case A_DISP_GBR: |
| 1315 | case A_DISP2_TBR: |
| 1316 | case A_MACH: |
| 1317 | case A_PR: |
| 1318 | case A_MACL: |
| 1319 | if (user->type != arg) |
| 1320 | goto fail; |
| 1321 | break; |
| 1322 | case A_R0: |
| 1323 | /* opcode needs r0 */ |
| 1324 | if (user->type != A_REG_N || user->reg != 0) |
| 1325 | goto fail; |
| 1326 | break; |
| 1327 | case A_R0_GBR: |
| 1328 | if (user->type != A_R0_GBR || user->reg != 0) |
| 1329 | goto fail; |
| 1330 | break; |
| 1331 | case F_FR0: |
| 1332 | if (user->type != F_REG_N || user->reg != 0) |
| 1333 | goto fail; |
| 1334 | break; |
| 1335 | |
| 1336 | case A_REG_N: |
| 1337 | case A_INC_N: |
| 1338 | case A_DEC_N: |
| 1339 | case A_IND_N: |
| 1340 | case A_IND_R0_REG_N: |
| 1341 | case A_DISP_REG_N: |
| 1342 | case F_REG_N: |
| 1343 | case D_REG_N: |
| 1344 | case X_REG_N: |
| 1345 | case V_REG_N: |
| 1346 | case FPUL_N: |
| 1347 | case FPSCR_N: |
| 1348 | case DSP_REG_N: |
| 1349 | /* Opcode needs rn */ |
| 1350 | if (user->type != arg) |
| 1351 | goto fail; |
| 1352 | reg_n = user->reg; |
| 1353 | break; |
| 1354 | case DX_REG_N: |
| 1355 | if (user->type != D_REG_N && user->type != X_REG_N) |
| 1356 | goto fail; |
| 1357 | reg_n = user->reg; |
| 1358 | break; |
| 1359 | case A_GBR: |
| 1360 | case A_TBR: |
| 1361 | case A_SR: |
| 1362 | case A_VBR: |
| 1363 | case A_DSR: |
| 1364 | case A_MOD: |
| 1365 | case A_RE: |
| 1366 | case A_RS: |
| 1367 | case A_SSR: |
| 1368 | case A_SPC: |
| 1369 | case A_SGR: |
| 1370 | case A_DBR: |
| 1371 | if (user->type != arg) |
| 1372 | goto fail; |
| 1373 | break; |
| 1374 | |
| 1375 | case A_REG_B: |
| 1376 | if (user->type != arg) |
| 1377 | goto fail; |
| 1378 | reg_b = user->reg; |
| 1379 | break; |
| 1380 | |
| 1381 | case A_INC_R15: |
| 1382 | if (user->type != A_INC_N) |
| 1383 | goto fail; |
| 1384 | if (user->reg != 15) |
| 1385 | goto fail; |
| 1386 | reg_n = user->reg; |
| 1387 | break; |
| 1388 | |
| 1389 | case A_DEC_R15: |
| 1390 | if (user->type != A_DEC_N) |
| 1391 | goto fail; |
| 1392 | if (user->reg != 15) |
| 1393 | goto fail; |
| 1394 | reg_n = user->reg; |
| 1395 | break; |
| 1396 | |
| 1397 | case A_REG_M: |
| 1398 | case A_INC_M: |
| 1399 | case A_DEC_M: |
| 1400 | case A_IND_M: |
| 1401 | case A_IND_R0_REG_M: |
| 1402 | case A_DISP_REG_M: |
| 1403 | case DSP_REG_M: |
| 1404 | /* Opcode needs rn */ |
| 1405 | if (user->type != arg - A_REG_M + A_REG_N) |
| 1406 | goto fail; |
| 1407 | reg_m = user->reg; |
| 1408 | break; |
| 1409 | |
| 1410 | case AS_DEC_N: |
| 1411 | if (user->type != A_DEC_N) |
| 1412 | goto fail; |
| 1413 | if (user->reg < 2 || user->reg > 5) |
| 1414 | goto fail; |
| 1415 | reg_n = user->reg; |
| 1416 | break; |
| 1417 | |
| 1418 | case AS_INC_N: |
| 1419 | if (user->type != A_INC_N) |
| 1420 | goto fail; |
| 1421 | if (user->reg < 2 || user->reg > 5) |
| 1422 | goto fail; |
| 1423 | reg_n = user->reg; |
| 1424 | break; |
| 1425 | |
| 1426 | case AS_IND_N: |
| 1427 | if (user->type != A_IND_N) |
| 1428 | goto fail; |
| 1429 | if (user->reg < 2 || user->reg > 5) |
| 1430 | goto fail; |
| 1431 | reg_n = user->reg; |
| 1432 | break; |
| 1433 | |
| 1434 | case AS_PMOD_N: |
| 1435 | if (user->type != AX_PMOD_N) |
| 1436 | goto fail; |
| 1437 | if (user->reg < 2 || user->reg > 5) |
| 1438 | goto fail; |
| 1439 | reg_n = user->reg; |
| 1440 | break; |
| 1441 | |
| 1442 | case AX_INC_N: |
| 1443 | if (user->type != A_INC_N) |
| 1444 | goto fail; |
| 1445 | if (user->reg < 4 || user->reg > 5) |
| 1446 | goto fail; |
| 1447 | reg_n = user->reg; |
| 1448 | break; |
| 1449 | |
| 1450 | case AX_IND_N: |
| 1451 | if (user->type != A_IND_N) |
| 1452 | goto fail; |
| 1453 | if (user->reg < 4 || user->reg > 5) |
| 1454 | goto fail; |
| 1455 | reg_n = user->reg; |
| 1456 | break; |
| 1457 | |
| 1458 | case AX_PMOD_N: |
| 1459 | if (user->type != AX_PMOD_N) |
| 1460 | goto fail; |
| 1461 | if (user->reg < 4 || user->reg > 5) |
| 1462 | goto fail; |
| 1463 | reg_n = user->reg; |
| 1464 | break; |
| 1465 | |
| 1466 | case AXY_INC_N: |
| 1467 | if (user->type != A_INC_N) |
| 1468 | goto fail; |
| 1469 | if ((user->reg < 4 || user->reg > 5) |
| 1470 | && (user->reg < 0 || user->reg > 1)) |
| 1471 | goto fail; |
| 1472 | reg_n = user->reg; |
| 1473 | break; |
| 1474 | |
| 1475 | case AXY_IND_N: |
| 1476 | if (user->type != A_IND_N) |
| 1477 | goto fail; |
| 1478 | if ((user->reg < 4 || user->reg > 5) |
| 1479 | && (user->reg < 0 || user->reg > 1)) |
| 1480 | goto fail; |
| 1481 | reg_n = user->reg; |
| 1482 | break; |
| 1483 | |
| 1484 | case AXY_PMOD_N: |
| 1485 | if (user->type != AX_PMOD_N) |
| 1486 | goto fail; |
| 1487 | if ((user->reg < 4 || user->reg > 5) |
| 1488 | && (user->reg < 0 || user->reg > 1)) |
| 1489 | goto fail; |
| 1490 | reg_n = user->reg; |
| 1491 | break; |
| 1492 | |
| 1493 | case AY_INC_N: |
| 1494 | if (user->type != A_INC_N) |
| 1495 | goto fail; |
| 1496 | if (user->reg < 6 || user->reg > 7) |
| 1497 | goto fail; |
| 1498 | reg_n = user->reg; |
| 1499 | break; |
| 1500 | |
| 1501 | case AY_IND_N: |
| 1502 | if (user->type != A_IND_N) |
| 1503 | goto fail; |
| 1504 | if (user->reg < 6 || user->reg > 7) |
| 1505 | goto fail; |
| 1506 | reg_n = user->reg; |
| 1507 | break; |
| 1508 | |
| 1509 | case AY_PMOD_N: |
| 1510 | if (user->type != AY_PMOD_N) |
| 1511 | goto fail; |
| 1512 | if (user->reg < 6 || user->reg > 7) |
| 1513 | goto fail; |
| 1514 | reg_n = user->reg; |
| 1515 | break; |
| 1516 | |
| 1517 | case AYX_INC_N: |
| 1518 | if (user->type != A_INC_N) |
| 1519 | goto fail; |
| 1520 | if ((user->reg < 6 || user->reg > 7) |
| 1521 | && (user->reg < 2 || user->reg > 3)) |
| 1522 | goto fail; |
| 1523 | reg_n = user->reg; |
| 1524 | break; |
| 1525 | |
| 1526 | case AYX_IND_N: |
| 1527 | if (user->type != A_IND_N) |
| 1528 | goto fail; |
| 1529 | if ((user->reg < 6 || user->reg > 7) |
| 1530 | && (user->reg < 2 || user->reg > 3)) |
| 1531 | goto fail; |
| 1532 | reg_n = user->reg; |
| 1533 | break; |
| 1534 | |
| 1535 | case AYX_PMOD_N: |
| 1536 | if (user->type != AY_PMOD_N) |
| 1537 | goto fail; |
| 1538 | if ((user->reg < 6 || user->reg > 7) |
| 1539 | && (user->reg < 2 || user->reg > 3)) |
| 1540 | goto fail; |
| 1541 | reg_n = user->reg; |
| 1542 | break; |
| 1543 | |
| 1544 | case DSP_REG_A_M: |
| 1545 | if (user->type != DSP_REG_N) |
| 1546 | goto fail; |
| 1547 | if (user->reg != A_A0_NUM |
| 1548 | && user->reg != A_A1_NUM) |
| 1549 | goto fail; |
| 1550 | reg_m = user->reg; |
| 1551 | break; |
| 1552 | |
| 1553 | case DSP_REG_AX: |
| 1554 | if (user->type != DSP_REG_N) |
| 1555 | goto fail; |
| 1556 | switch (user->reg) |
| 1557 | { |
| 1558 | case A_A0_NUM: |
| 1559 | reg_x = 0; |
| 1560 | break; |
| 1561 | case A_A1_NUM: |
| 1562 | reg_x = 2; |
| 1563 | break; |
| 1564 | case A_X0_NUM: |
| 1565 | reg_x = 1; |
| 1566 | break; |
| 1567 | case A_X1_NUM: |
| 1568 | reg_x = 3; |
| 1569 | break; |
| 1570 | default: |
| 1571 | goto fail; |
| 1572 | } |
| 1573 | break; |
| 1574 | |
| 1575 | case DSP_REG_XY: |
| 1576 | if (user->type != DSP_REG_N) |
| 1577 | goto fail; |
| 1578 | switch (user->reg) |
| 1579 | { |
| 1580 | case A_X0_NUM: |
| 1581 | reg_x = 0; |
| 1582 | break; |
| 1583 | case A_X1_NUM: |
| 1584 | reg_x = 2; |
| 1585 | break; |
| 1586 | case A_Y0_NUM: |
| 1587 | reg_x = 1; |
| 1588 | break; |
| 1589 | case A_Y1_NUM: |
| 1590 | reg_x = 3; |
| 1591 | break; |
| 1592 | default: |
| 1593 | goto fail; |
| 1594 | } |
| 1595 | break; |
| 1596 | |
| 1597 | case DSP_REG_AY: |
| 1598 | if (user->type != DSP_REG_N) |
| 1599 | goto fail; |
| 1600 | switch (user->reg) |
| 1601 | { |
| 1602 | case A_A0_NUM: |
| 1603 | reg_y = 0; |
| 1604 | break; |
| 1605 | case A_A1_NUM: |
| 1606 | reg_y = 1; |
| 1607 | break; |
| 1608 | case A_Y0_NUM: |
| 1609 | reg_y = 2; |
| 1610 | break; |
| 1611 | case A_Y1_NUM: |
| 1612 | reg_y = 3; |
| 1613 | break; |
| 1614 | default: |
| 1615 | goto fail; |
| 1616 | } |
| 1617 | break; |
| 1618 | |
| 1619 | case DSP_REG_YX: |
| 1620 | if (user->type != DSP_REG_N) |
| 1621 | goto fail; |
| 1622 | switch (user->reg) |
| 1623 | { |
| 1624 | case A_Y0_NUM: |
| 1625 | reg_y = 0; |
| 1626 | break; |
| 1627 | case A_Y1_NUM: |
| 1628 | reg_y = 1; |
| 1629 | break; |
| 1630 | case A_X0_NUM: |
| 1631 | reg_y = 2; |
| 1632 | break; |
| 1633 | case A_X1_NUM: |
| 1634 | reg_y = 3; |
| 1635 | break; |
| 1636 | default: |
| 1637 | goto fail; |
| 1638 | } |
| 1639 | break; |
| 1640 | |
| 1641 | case DSP_REG_X: |
| 1642 | if (user->type != DSP_REG_N) |
| 1643 | goto fail; |
| 1644 | switch (user->reg) |
| 1645 | { |
| 1646 | case A_X0_NUM: |
| 1647 | reg_x = 0; |
| 1648 | break; |
| 1649 | case A_X1_NUM: |
| 1650 | reg_x = 1; |
| 1651 | break; |
| 1652 | case A_A0_NUM: |
| 1653 | reg_x = 2; |
| 1654 | break; |
| 1655 | case A_A1_NUM: |
| 1656 | reg_x = 3; |
| 1657 | break; |
| 1658 | default: |
| 1659 | goto fail; |
| 1660 | } |
| 1661 | break; |
| 1662 | |
| 1663 | case DSP_REG_Y: |
| 1664 | if (user->type != DSP_REG_N) |
| 1665 | goto fail; |
| 1666 | switch (user->reg) |
| 1667 | { |
| 1668 | case A_Y0_NUM: |
| 1669 | reg_y = 0; |
| 1670 | break; |
| 1671 | case A_Y1_NUM: |
| 1672 | reg_y = 1; |
| 1673 | break; |
| 1674 | case A_M0_NUM: |
| 1675 | reg_y = 2; |
| 1676 | break; |
| 1677 | case A_M1_NUM: |
| 1678 | reg_y = 3; |
| 1679 | break; |
| 1680 | default: |
| 1681 | goto fail; |
| 1682 | } |
| 1683 | break; |
| 1684 | |
| 1685 | case DSP_REG_E: |
| 1686 | if (user->type != DSP_REG_N) |
| 1687 | goto fail; |
| 1688 | switch (user->reg) |
| 1689 | { |
| 1690 | case A_X0_NUM: |
| 1691 | reg_efg = 0 << 10; |
| 1692 | break; |
| 1693 | case A_X1_NUM: |
| 1694 | reg_efg = 1 << 10; |
| 1695 | break; |
| 1696 | case A_Y0_NUM: |
| 1697 | reg_efg = 2 << 10; |
| 1698 | break; |
| 1699 | case A_A1_NUM: |
| 1700 | reg_efg = 3 << 10; |
| 1701 | break; |
| 1702 | default: |
| 1703 | goto fail; |
| 1704 | } |
| 1705 | break; |
| 1706 | |
| 1707 | case DSP_REG_F: |
| 1708 | if (user->type != DSP_REG_N) |
| 1709 | goto fail; |
| 1710 | switch (user->reg) |
| 1711 | { |
| 1712 | case A_Y0_NUM: |
| 1713 | reg_efg |= 0 << 8; |
| 1714 | break; |
| 1715 | case A_Y1_NUM: |
| 1716 | reg_efg |= 1 << 8; |
| 1717 | break; |
| 1718 | case A_X0_NUM: |
| 1719 | reg_efg |= 2 << 8; |
| 1720 | break; |
| 1721 | case A_A1_NUM: |
| 1722 | reg_efg |= 3 << 8; |
| 1723 | break; |
| 1724 | default: |
| 1725 | goto fail; |
| 1726 | } |
| 1727 | break; |
| 1728 | |
| 1729 | case DSP_REG_G: |
| 1730 | if (user->type != DSP_REG_N) |
| 1731 | goto fail; |
| 1732 | switch (user->reg) |
| 1733 | { |
| 1734 | case A_M0_NUM: |
| 1735 | reg_efg |= 0 << 2; |
| 1736 | break; |
| 1737 | case A_M1_NUM: |
| 1738 | reg_efg |= 1 << 2; |
| 1739 | break; |
| 1740 | case A_A0_NUM: |
| 1741 | reg_efg |= 2 << 2; |
| 1742 | break; |
| 1743 | case A_A1_NUM: |
| 1744 | reg_efg |= 3 << 2; |
| 1745 | break; |
| 1746 | default: |
| 1747 | goto fail; |
| 1748 | } |
| 1749 | break; |
| 1750 | |
| 1751 | case A_A0: |
| 1752 | if (user->type != DSP_REG_N || user->reg != A_A0_NUM) |
| 1753 | goto fail; |
| 1754 | break; |
| 1755 | case A_X0: |
| 1756 | if (user->type != DSP_REG_N || user->reg != A_X0_NUM) |
| 1757 | goto fail; |
| 1758 | break; |
| 1759 | case A_X1: |
| 1760 | if (user->type != DSP_REG_N || user->reg != A_X1_NUM) |
| 1761 | goto fail; |
| 1762 | break; |
| 1763 | case A_Y0: |
| 1764 | if (user->type != DSP_REG_N || user->reg != A_Y0_NUM) |
| 1765 | goto fail; |
| 1766 | break; |
| 1767 | case A_Y1: |
| 1768 | if (user->type != DSP_REG_N || user->reg != A_Y1_NUM) |
| 1769 | goto fail; |
| 1770 | break; |
| 1771 | |
| 1772 | case F_REG_M: |
| 1773 | case D_REG_M: |
| 1774 | case X_REG_M: |
| 1775 | case V_REG_M: |
| 1776 | case FPUL_M: |
| 1777 | case FPSCR_M: |
| 1778 | /* Opcode needs rn */ |
| 1779 | if (user->type != arg - F_REG_M + F_REG_N) |
| 1780 | goto fail; |
| 1781 | reg_m = user->reg; |
| 1782 | break; |
| 1783 | case DX_REG_M: |
| 1784 | if (user->type != D_REG_N && user->type != X_REG_N) |
| 1785 | goto fail; |
| 1786 | reg_m = user->reg; |
| 1787 | break; |
| 1788 | case XMTRX_M4: |
| 1789 | if (user->type != XMTRX_M4) |
| 1790 | goto fail; |
| 1791 | reg_m = 4; |
| 1792 | break; |
| 1793 | |
| 1794 | default: |
| 1795 | printf (_("unhandled %d\n"), arg); |
| 1796 | goto fail; |
| 1797 | } |
| 1798 | if (SH_MERGE_ARCH_SET_VALID (valid_arch, arch_sh2a_nofpu_up) |
| 1799 | && ( arg == A_DISP_REG_M |
| 1800 | || arg == A_DISP_REG_N)) |
| 1801 | { |
| 1802 | /* Check a few key IMM* fields for overflow. */ |
| 1803 | int opf; |
| 1804 | long val = user->immediate.X_add_number; |
| 1805 | |
| 1806 | for (opf = 0; opf < 4; opf ++) |
| 1807 | switch (this_try->nibbles[opf]) |
| 1808 | { |
| 1809 | case IMM0_4: |
| 1810 | case IMM1_4: |
| 1811 | if (val < 0 || val > 15) |
| 1812 | goto fail; |
| 1813 | break; |
| 1814 | case IMM0_4BY2: |
| 1815 | case IMM1_4BY2: |
| 1816 | if (val < 0 || val > 15 * 2) |
| 1817 | goto fail; |
| 1818 | break; |
| 1819 | case IMM0_4BY4: |
| 1820 | case IMM1_4BY4: |
| 1821 | if (val < 0 || val > 15 * 4) |
| 1822 | goto fail; |
| 1823 | break; |
| 1824 | default: |
| 1825 | break; |
| 1826 | } |
| 1827 | } |
| 1828 | } |
| 1829 | if ( !SH_MERGE_ARCH_SET_VALID (valid_arch, this_try->arch)) |
| 1830 | goto fail; |
| 1831 | valid_arch = SH_MERGE_ARCH_SET (valid_arch, this_try->arch); |
| 1832 | return this_try; |
| 1833 | fail: |
| 1834 | ; |
| 1835 | } |
| 1836 | |
| 1837 | return 0; |
| 1838 | } |
| 1839 | |
| 1840 | static void |
| 1841 | insert (char *where, bfd_reloc_code_real_type how, int pcrel, |
| 1842 | sh_operand_info *op) |
| 1843 | { |
| 1844 | fix_new_exp (frag_now, |
| 1845 | where - frag_now->fr_literal, |
| 1846 | 2, |
| 1847 | &op->immediate, |
| 1848 | pcrel, |
| 1849 | how); |
| 1850 | } |
| 1851 | |
| 1852 | static void |
| 1853 | insert4 (char * where, bfd_reloc_code_real_type how, int pcrel, |
| 1854 | sh_operand_info * op) |
| 1855 | { |
| 1856 | fix_new_exp (frag_now, |
| 1857 | where - frag_now->fr_literal, |
| 1858 | 4, |
| 1859 | & op->immediate, |
| 1860 | pcrel, |
| 1861 | how); |
| 1862 | } |
| 1863 | static void |
| 1864 | build_relax (sh_opcode_info *opcode, sh_operand_info *op) |
| 1865 | { |
| 1866 | int high_byte = target_big_endian ? 0 : 1; |
| 1867 | char *p; |
| 1868 | |
| 1869 | if (opcode->arg[0] == A_BDISP8) |
| 1870 | { |
| 1871 | int what = (opcode->nibbles[1] & 4) ? COND_JUMP_DELAY : COND_JUMP; |
| 1872 | p = frag_var (rs_machine_dependent, |
| 1873 | md_relax_table[C (what, COND32)].rlx_length, |
| 1874 | md_relax_table[C (what, COND8)].rlx_length, |
| 1875 | C (what, 0), |
| 1876 | op->immediate.X_add_symbol, |
| 1877 | op->immediate.X_add_number, |
| 1878 | 0); |
| 1879 | p[high_byte] = (opcode->nibbles[0] << 4) | (opcode->nibbles[1]); |
| 1880 | } |
| 1881 | else if (opcode->arg[0] == A_BDISP12) |
| 1882 | { |
| 1883 | p = frag_var (rs_machine_dependent, |
| 1884 | md_relax_table[C (UNCOND_JUMP, UNCOND32)].rlx_length, |
| 1885 | md_relax_table[C (UNCOND_JUMP, UNCOND12)].rlx_length, |
| 1886 | C (UNCOND_JUMP, 0), |
| 1887 | op->immediate.X_add_symbol, |
| 1888 | op->immediate.X_add_number, |
| 1889 | 0); |
| 1890 | p[high_byte] = (opcode->nibbles[0] << 4); |
| 1891 | } |
| 1892 | |
| 1893 | } |
| 1894 | |
| 1895 | /* Insert ldrs & ldre with fancy relocations that relaxation can recognize. */ |
| 1896 | |
| 1897 | static char * |
| 1898 | insert_loop_bounds (char *output, sh_operand_info *operand) |
| 1899 | { |
| 1900 | symbolS *end_sym; |
| 1901 | |
| 1902 | /* Since the low byte of the opcode will be overwritten by the reloc, we |
| 1903 | can just stash the high byte into both bytes and ignore endianness. */ |
| 1904 | output[0] = 0x8c; |
| 1905 | output[1] = 0x8c; |
| 1906 | insert (output, BFD_RELOC_SH_LOOP_START, 1, operand); |
| 1907 | insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1); |
| 1908 | |
| 1909 | if (sh_relax) |
| 1910 | { |
| 1911 | static int count = 0; |
| 1912 | char name[11]; |
| 1913 | expressionS *symval; |
| 1914 | |
| 1915 | /* If the last loop insn is a two-byte-insn, it is in danger of being |
| 1916 | swapped with the insn after it. To prevent this, create a new |
| 1917 | symbol - complete with SH_LABEL reloc - after the last loop insn. |
| 1918 | If the last loop insn is four bytes long, the symbol will be |
| 1919 | right in the middle, but four byte insns are not swapped anyways. */ |
| 1920 | /* A REPEAT takes 6 bytes. The SH has a 32 bit address space. |
| 1921 | Hence a 9 digit number should be enough to count all REPEATs. */ |
| 1922 | sprintf (name, "_R%x", count++ & 0x3fffffff); |
| 1923 | end_sym = symbol_new (name, undefined_section, 0, &zero_address_frag); |
| 1924 | /* Make this a local symbol. */ |
| 1925 | #ifdef OBJ_COFF |
| 1926 | SF_SET_LOCAL (end_sym); |
| 1927 | #endif /* OBJ_COFF */ |
| 1928 | symbol_table_insert (end_sym); |
| 1929 | symval = symbol_get_value_expression (end_sym); |
| 1930 | *symval = operand[1].immediate; |
| 1931 | symval->X_add_number += 2; |
| 1932 | fix_new (frag_now, frag_now_fix (), 2, end_sym, 0, 1, BFD_RELOC_SH_LABEL); |
| 1933 | } |
| 1934 | |
| 1935 | output = frag_more (2); |
| 1936 | output[0] = 0x8e; |
| 1937 | output[1] = 0x8e; |
| 1938 | insert (output, BFD_RELOC_SH_LOOP_START, 1, operand); |
| 1939 | insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1); |
| 1940 | |
| 1941 | return frag_more (2); |
| 1942 | } |
| 1943 | |
| 1944 | /* Now we know what sort of opcodes it is, let's build the bytes. */ |
| 1945 | |
| 1946 | static unsigned int |
| 1947 | build_Mytes (sh_opcode_info *opcode, sh_operand_info *operand) |
| 1948 | { |
| 1949 | int indx; |
| 1950 | char nbuf[8]; |
| 1951 | char *output; |
| 1952 | unsigned int size = 2; |
| 1953 | int low_byte = target_big_endian ? 1 : 0; |
| 1954 | int max_index = 4; |
| 1955 | bfd_reloc_code_real_type r_type; |
| 1956 | #ifdef OBJ_ELF |
| 1957 | int unhandled_pic = 0; |
| 1958 | #endif |
| 1959 | |
| 1960 | nbuf[0] = 0; |
| 1961 | nbuf[1] = 0; |
| 1962 | nbuf[2] = 0; |
| 1963 | nbuf[3] = 0; |
| 1964 | nbuf[4] = 0; |
| 1965 | nbuf[5] = 0; |
| 1966 | nbuf[6] = 0; |
| 1967 | nbuf[7] = 0; |
| 1968 | |
| 1969 | #ifdef OBJ_ELF |
| 1970 | for (indx = 0; indx < 3; indx++) |
| 1971 | if (opcode->arg[indx] == A_IMM |
| 1972 | && operand[indx].type == A_IMM |
| 1973 | && (operand[indx].immediate.X_op == O_PIC_reloc |
| 1974 | || sh_PIC_related_p (operand[indx].immediate.X_add_symbol) |
| 1975 | || sh_PIC_related_p (operand[indx].immediate.X_op_symbol))) |
| 1976 | unhandled_pic = 1; |
| 1977 | #endif |
| 1978 | |
| 1979 | if (SH_MERGE_ARCH_SET (opcode->arch, arch_op32)) |
| 1980 | { |
| 1981 | output = frag_more (4); |
| 1982 | size = 4; |
| 1983 | max_index = 8; |
| 1984 | } |
| 1985 | else |
| 1986 | output = frag_more (2); |
| 1987 | |
| 1988 | for (indx = 0; indx < max_index; indx++) |
| 1989 | { |
| 1990 | sh_nibble_type i = opcode->nibbles[indx]; |
| 1991 | if (i < 16) |
| 1992 | { |
| 1993 | nbuf[indx] = i; |
| 1994 | } |
| 1995 | else |
| 1996 | { |
| 1997 | switch (i) |
| 1998 | { |
| 1999 | case REG_N: |
| 2000 | case REG_N_D: |
| 2001 | nbuf[indx] = reg_n; |
| 2002 | break; |
| 2003 | case REG_M: |
| 2004 | nbuf[indx] = reg_m; |
| 2005 | break; |
| 2006 | case SDT_REG_N: |
| 2007 | if (reg_n < 2 || reg_n > 5) |
| 2008 | as_bad (_("Invalid register: 'r%d'"), reg_n); |
| 2009 | nbuf[indx] = (reg_n & 3) | 4; |
| 2010 | break; |
| 2011 | case REG_NM: |
| 2012 | nbuf[indx] = reg_n | (reg_m >> 2); |
| 2013 | break; |
| 2014 | case REG_B: |
| 2015 | nbuf[indx] = reg_b | 0x08; |
| 2016 | break; |
| 2017 | case REG_N_B01: |
| 2018 | nbuf[indx] = reg_n | 0x01; |
| 2019 | break; |
| 2020 | case IMM0_3s: |
| 2021 | nbuf[indx] |= 0x08; |
| 2022 | /* Fall through. */ |
| 2023 | case IMM0_3c: |
| 2024 | insert (output + low_byte, BFD_RELOC_SH_IMM3, 0, operand); |
| 2025 | break; |
| 2026 | case IMM0_3Us: |
| 2027 | nbuf[indx] |= 0x80; |
| 2028 | /* Fall through. */ |
| 2029 | case IMM0_3Uc: |
| 2030 | insert (output + low_byte, BFD_RELOC_SH_IMM3U, 0, operand); |
| 2031 | break; |
| 2032 | case DISP0_12: |
| 2033 | insert (output + 2, BFD_RELOC_SH_DISP12, 0, operand); |
| 2034 | break; |
| 2035 | case DISP0_12BY2: |
| 2036 | insert (output + 2, BFD_RELOC_SH_DISP12BY2, 0, operand); |
| 2037 | break; |
| 2038 | case DISP0_12BY4: |
| 2039 | insert (output + 2, BFD_RELOC_SH_DISP12BY4, 0, operand); |
| 2040 | break; |
| 2041 | case DISP0_12BY8: |
| 2042 | insert (output + 2, BFD_RELOC_SH_DISP12BY8, 0, operand); |
| 2043 | break; |
| 2044 | case DISP1_12: |
| 2045 | insert (output + 2, BFD_RELOC_SH_DISP12, 0, operand+1); |
| 2046 | break; |
| 2047 | case DISP1_12BY2: |
| 2048 | insert (output + 2, BFD_RELOC_SH_DISP12BY2, 0, operand+1); |
| 2049 | break; |
| 2050 | case DISP1_12BY4: |
| 2051 | insert (output + 2, BFD_RELOC_SH_DISP12BY4, 0, operand+1); |
| 2052 | break; |
| 2053 | case DISP1_12BY8: |
| 2054 | insert (output + 2, BFD_RELOC_SH_DISP12BY8, 0, operand+1); |
| 2055 | break; |
| 2056 | case IMM0_20_4: |
| 2057 | break; |
| 2058 | case IMM0_20: |
| 2059 | r_type = BFD_RELOC_SH_DISP20; |
| 2060 | #ifdef OBJ_ELF |
| 2061 | if (sh_check_fixup (&operand->immediate, &r_type)) |
| 2062 | as_bad (_("Invalid PIC expression.")); |
| 2063 | unhandled_pic = 0; |
| 2064 | #endif |
| 2065 | insert4 (output, r_type, 0, operand); |
| 2066 | break; |
| 2067 | case IMM0_20BY8: |
| 2068 | insert4 (output, BFD_RELOC_SH_DISP20BY8, 0, operand); |
| 2069 | break; |
| 2070 | case IMM0_4BY4: |
| 2071 | insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand); |
| 2072 | break; |
| 2073 | case IMM0_4BY2: |
| 2074 | insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand); |
| 2075 | break; |
| 2076 | case IMM0_4: |
| 2077 | insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand); |
| 2078 | break; |
| 2079 | case IMM1_4BY4: |
| 2080 | insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand + 1); |
| 2081 | break; |
| 2082 | case IMM1_4BY2: |
| 2083 | insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand + 1); |
| 2084 | break; |
| 2085 | case IMM1_4: |
| 2086 | insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand + 1); |
| 2087 | break; |
| 2088 | case IMM0_8BY4: |
| 2089 | insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand); |
| 2090 | break; |
| 2091 | case IMM0_8BY2: |
| 2092 | insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand); |
| 2093 | break; |
| 2094 | case IMM0_8U: |
| 2095 | case IMM0_8S: |
| 2096 | insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand); |
| 2097 | break; |
| 2098 | case IMM1_8BY4: |
| 2099 | insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand + 1); |
| 2100 | break; |
| 2101 | case IMM1_8BY2: |
| 2102 | insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand + 1); |
| 2103 | break; |
| 2104 | case IMM1_8: |
| 2105 | insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand + 1); |
| 2106 | break; |
| 2107 | case PCRELIMM_8BY4: |
| 2108 | insert (output, BFD_RELOC_SH_PCRELIMM8BY4, |
| 2109 | operand->type != A_DISP_PC_ABS, operand); |
| 2110 | break; |
| 2111 | case PCRELIMM_8BY2: |
| 2112 | insert (output, BFD_RELOC_SH_PCRELIMM8BY2, |
| 2113 | operand->type != A_DISP_PC_ABS, operand); |
| 2114 | break; |
| 2115 | case REPEAT: |
| 2116 | output = insert_loop_bounds (output, operand); |
| 2117 | nbuf[indx] = opcode->nibbles[3]; |
| 2118 | operand += 2; |
| 2119 | break; |
| 2120 | default: |
| 2121 | printf (_("failed for %d\n"), i); |
| 2122 | } |
| 2123 | } |
| 2124 | } |
| 2125 | #ifdef OBJ_ELF |
| 2126 | if (unhandled_pic) |
| 2127 | as_bad (_("misplaced PIC operand")); |
| 2128 | #endif |
| 2129 | if (!target_big_endian) |
| 2130 | { |
| 2131 | output[1] = (nbuf[0] << 4) | (nbuf[1]); |
| 2132 | output[0] = (nbuf[2] << 4) | (nbuf[3]); |
| 2133 | } |
| 2134 | else |
| 2135 | { |
| 2136 | output[0] = (nbuf[0] << 4) | (nbuf[1]); |
| 2137 | output[1] = (nbuf[2] << 4) | (nbuf[3]); |
| 2138 | } |
| 2139 | if (SH_MERGE_ARCH_SET (opcode->arch, arch_op32)) |
| 2140 | { |
| 2141 | if (!target_big_endian) |
| 2142 | { |
| 2143 | output[3] = (nbuf[4] << 4) | (nbuf[5]); |
| 2144 | output[2] = (nbuf[6] << 4) | (nbuf[7]); |
| 2145 | } |
| 2146 | else |
| 2147 | { |
| 2148 | output[2] = (nbuf[4] << 4) | (nbuf[5]); |
| 2149 | output[3] = (nbuf[6] << 4) | (nbuf[7]); |
| 2150 | } |
| 2151 | } |
| 2152 | return size; |
| 2153 | } |
| 2154 | |
| 2155 | /* Find an opcode at the start of *STR_P in the hash table, and set |
| 2156 | *STR_P to the first character after the last one read. */ |
| 2157 | |
| 2158 | static sh_opcode_info * |
| 2159 | find_cooked_opcode (char **str_p) |
| 2160 | { |
| 2161 | char *str = *str_p; |
| 2162 | unsigned char *op_start; |
| 2163 | unsigned char *op_end; |
| 2164 | char name[20]; |
| 2165 | unsigned int nlen = 0; |
| 2166 | |
| 2167 | /* Drop leading whitespace. */ |
| 2168 | while (*str == ' ') |
| 2169 | str++; |
| 2170 | |
| 2171 | /* Find the op code end. |
| 2172 | The pre-processor will eliminate whitespace in front of |
| 2173 | any '@' after the first argument; we may be called from |
| 2174 | assemble_ppi, so the opcode might be terminated by an '@'. */ |
| 2175 | for (op_start = op_end = (unsigned char *) str; |
| 2176 | *op_end |
| 2177 | && nlen < sizeof (name) - 1 |
| 2178 | && !is_end_of_line[*op_end] && *op_end != ' ' && *op_end != '@'; |
| 2179 | op_end++) |
| 2180 | { |
| 2181 | unsigned char c = op_start[nlen]; |
| 2182 | |
| 2183 | /* The machine independent code will convert CMP/EQ into cmp/EQ |
| 2184 | because it thinks the '/' is the end of the symbol. Moreover, |
| 2185 | all but the first sub-insn is a parallel processing insn won't |
| 2186 | be capitalized. Instead of hacking up the machine independent |
| 2187 | code, we just deal with it here. */ |
| 2188 | c = TOLOWER (c); |
| 2189 | name[nlen] = c; |
| 2190 | nlen++; |
| 2191 | } |
| 2192 | |
| 2193 | name[nlen] = 0; |
| 2194 | *str_p = (char *) op_end; |
| 2195 | |
| 2196 | if (nlen == 0) |
| 2197 | as_bad (_("can't find opcode ")); |
| 2198 | |
| 2199 | return (sh_opcode_info *) hash_find (opcode_hash_control, name); |
| 2200 | } |
| 2201 | |
| 2202 | /* Assemble a parallel processing insn. */ |
| 2203 | #define DDT_BASE 0xf000 /* Base value for double data transfer insns */ |
| 2204 | |
| 2205 | static unsigned int |
| 2206 | assemble_ppi (char *op_end, sh_opcode_info *opcode) |
| 2207 | { |
| 2208 | int movx = 0; |
| 2209 | int movy = 0; |
| 2210 | int cond = 0; |
| 2211 | int field_b = 0; |
| 2212 | char *output; |
| 2213 | int move_code; |
| 2214 | unsigned int size; |
| 2215 | |
| 2216 | for (;;) |
| 2217 | { |
| 2218 | sh_operand_info operand[3]; |
| 2219 | |
| 2220 | /* Some insn ignore one or more register fields, e.g. psts machl,a0. |
| 2221 | Make sure we encode a defined insn pattern. */ |
| 2222 | reg_x = 0; |
| 2223 | reg_y = 0; |
| 2224 | reg_n = 0; |
| 2225 | |
| 2226 | if (opcode->arg[0] != A_END) |
| 2227 | op_end = get_operands (opcode, op_end, operand); |
| 2228 | try_another_opcode: |
| 2229 | opcode = get_specific (opcode, operand); |
| 2230 | if (opcode == 0) |
| 2231 | { |
| 2232 | /* Couldn't find an opcode which matched the operands. */ |
| 2233 | char *where = frag_more (2); |
| 2234 | size = 2; |
| 2235 | |
| 2236 | where[0] = 0x0; |
| 2237 | where[1] = 0x0; |
| 2238 | as_bad (_("invalid operands for opcode")); |
| 2239 | return size; |
| 2240 | } |
| 2241 | |
| 2242 | if (opcode->nibbles[0] != PPI) |
| 2243 | as_bad (_("insn can't be combined with parallel processing insn")); |
| 2244 | |
| 2245 | switch (opcode->nibbles[1]) |
| 2246 | { |
| 2247 | |
| 2248 | case NOPX: |
| 2249 | if (movx) |
| 2250 | as_bad (_("multiple movx specifications")); |
| 2251 | movx = DDT_BASE; |
| 2252 | break; |
| 2253 | case NOPY: |
| 2254 | if (movy) |
| 2255 | as_bad (_("multiple movy specifications")); |
| 2256 | movy = DDT_BASE; |
| 2257 | break; |
| 2258 | |
| 2259 | case MOVX_NOPY: |
| 2260 | if (movx) |
| 2261 | as_bad (_("multiple movx specifications")); |
| 2262 | if ((reg_n < 4 || reg_n > 5) |
| 2263 | && (reg_n < 0 || reg_n > 1)) |
| 2264 | as_bad (_("invalid movx address register")); |
| 2265 | if (movy && movy != DDT_BASE) |
| 2266 | as_bad (_("insn cannot be combined with non-nopy")); |
| 2267 | movx = ((((reg_n & 1) != 0) << 9) |
| 2268 | + (((reg_n & 4) == 0) << 8) |
| 2269 | + (reg_x << 6) |
| 2270 | + (opcode->nibbles[2] << 4) |
| 2271 | + opcode->nibbles[3] |
| 2272 | + DDT_BASE); |
| 2273 | break; |
| 2274 | |
| 2275 | case MOVY_NOPX: |
| 2276 | if (movy) |
| 2277 | as_bad (_("multiple movy specifications")); |
| 2278 | if ((reg_n < 6 || reg_n > 7) |
| 2279 | && (reg_n < 2 || reg_n > 3)) |
| 2280 | as_bad (_("invalid movy address register")); |
| 2281 | if (movx && movx != DDT_BASE) |
| 2282 | as_bad (_("insn cannot be combined with non-nopx")); |
| 2283 | movy = ((((reg_n & 1) != 0) << 8) |
| 2284 | + (((reg_n & 4) == 0) << 9) |
| 2285 | + (reg_y << 6) |
| 2286 | + (opcode->nibbles[2] << 4) |
| 2287 | + opcode->nibbles[3] |
| 2288 | + DDT_BASE); |
| 2289 | break; |
| 2290 | |
| 2291 | case MOVX: |
| 2292 | if (movx) |
| 2293 | as_bad (_("multiple movx specifications")); |
| 2294 | if (movy & 0x2ac) |
| 2295 | as_bad (_("previous movy requires nopx")); |
| 2296 | if (reg_n < 4 || reg_n > 5) |
| 2297 | as_bad (_("invalid movx address register")); |
| 2298 | if (opcode->nibbles[2] & 8) |
| 2299 | { |
| 2300 | if (reg_m == A_A1_NUM) |
| 2301 | movx = 1 << 7; |
| 2302 | else if (reg_m != A_A0_NUM) |
| 2303 | as_bad (_("invalid movx dsp register")); |
| 2304 | } |
| 2305 | else |
| 2306 | { |
| 2307 | if (reg_x > 1) |
| 2308 | as_bad (_("invalid movx dsp register")); |
| 2309 | movx = reg_x << 7; |
| 2310 | } |
| 2311 | movx += ((reg_n - 4) << 9) + (opcode->nibbles[2] << 2) + DDT_BASE; |
| 2312 | break; |
| 2313 | |
| 2314 | case MOVY: |
| 2315 | if (movy) |
| 2316 | as_bad (_("multiple movy specifications")); |
| 2317 | if (movx & 0x153) |
| 2318 | as_bad (_("previous movx requires nopy")); |
| 2319 | if (opcode->nibbles[2] & 8) |
| 2320 | { |
| 2321 | /* Bit 3 in nibbles[2] is intended for bit 4 of the opcode, |
| 2322 | so add 8 more. */ |
| 2323 | movy = 8; |
| 2324 | if (reg_m == A_A1_NUM) |
| 2325 | movy += 1 << 6; |
| 2326 | else if (reg_m != A_A0_NUM) |
| 2327 | as_bad (_("invalid movy dsp register")); |
| 2328 | } |
| 2329 | else |
| 2330 | { |
| 2331 | if (reg_y > 1) |
| 2332 | as_bad (_("invalid movy dsp register")); |
| 2333 | movy = reg_y << 6; |
| 2334 | } |
| 2335 | if (reg_n < 6 || reg_n > 7) |
| 2336 | as_bad (_("invalid movy address register")); |
| 2337 | movy += ((reg_n - 6) << 8) + opcode->nibbles[2] + DDT_BASE; |
| 2338 | break; |
| 2339 | |
| 2340 | case PSH: |
| 2341 | if (operand[0].immediate.X_op != O_constant) |
| 2342 | as_bad (_("dsp immediate shift value not constant")); |
| 2343 | field_b = ((opcode->nibbles[2] << 12) |
| 2344 | | (operand[0].immediate.X_add_number & 127) << 4 |
| 2345 | | reg_n); |
| 2346 | break; |
| 2347 | case PPI3NC: |
| 2348 | if (cond) |
| 2349 | { |
| 2350 | opcode++; |
| 2351 | goto try_another_opcode; |
| 2352 | } |
| 2353 | /* Fall through. */ |
| 2354 | case PPI3: |
| 2355 | if (field_b) |
| 2356 | as_bad (_("multiple parallel processing specifications")); |
| 2357 | field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8) |
| 2358 | + (reg_x << 6) + (reg_y << 4) + reg_n); |
| 2359 | switch (opcode->nibbles[4]) |
| 2360 | { |
| 2361 | case HEX_0: |
| 2362 | case HEX_XX00: |
| 2363 | case HEX_00YY: |
| 2364 | break; |
| 2365 | case HEX_1: |
| 2366 | case HEX_4: |
| 2367 | field_b += opcode->nibbles[4] << 4; |
| 2368 | break; |
| 2369 | default: |
| 2370 | abort (); |
| 2371 | } |
| 2372 | break; |
| 2373 | case PDC: |
| 2374 | if (cond) |
| 2375 | as_bad (_("multiple condition specifications")); |
| 2376 | cond = opcode->nibbles[2] << 8; |
| 2377 | if (*op_end) |
| 2378 | goto skip_cond_check; |
| 2379 | break; |
| 2380 | case PPIC: |
| 2381 | if (field_b) |
| 2382 | as_bad (_("multiple parallel processing specifications")); |
| 2383 | field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8) |
| 2384 | + cond + (reg_x << 6) + (reg_y << 4) + reg_n); |
| 2385 | cond = 0; |
| 2386 | switch (opcode->nibbles[4]) |
| 2387 | { |
| 2388 | case HEX_0: |
| 2389 | case HEX_XX00: |
| 2390 | case HEX_00YY: |
| 2391 | break; |
| 2392 | case HEX_1: |
| 2393 | case HEX_4: |
| 2394 | field_b += opcode->nibbles[4] << 4; |
| 2395 | break; |
| 2396 | default: |
| 2397 | abort (); |
| 2398 | } |
| 2399 | break; |
| 2400 | case PMUL: |
| 2401 | if (field_b) |
| 2402 | { |
| 2403 | if ((field_b & 0xef00) == 0xa100) |
| 2404 | field_b -= 0x8100; |
| 2405 | /* pclr Dz pmuls Se,Sf,Dg */ |
| 2406 | else if ((field_b & 0xff00) == 0x8d00 |
| 2407 | && (SH_MERGE_ARCH_SET_VALID (valid_arch, arch_sh4al_dsp_up))) |
| 2408 | { |
| 2409 | valid_arch = SH_MERGE_ARCH_SET (valid_arch, arch_sh4al_dsp_up); |
| 2410 | field_b -= 0x8cf0; |
| 2411 | } |
| 2412 | else |
| 2413 | as_bad (_("insn cannot be combined with pmuls")); |
| 2414 | switch (field_b & 0xf) |
| 2415 | { |
| 2416 | case A_X0_NUM: |
| 2417 | field_b += 0 - A_X0_NUM; |
| 2418 | break; |
| 2419 | case A_Y0_NUM: |
| 2420 | field_b += 1 - A_Y0_NUM; |
| 2421 | break; |
| 2422 | case A_A0_NUM: |
| 2423 | field_b += 2 - A_A0_NUM; |
| 2424 | break; |
| 2425 | case A_A1_NUM: |
| 2426 | field_b += 3 - A_A1_NUM; |
| 2427 | break; |
| 2428 | default: |
| 2429 | as_bad (_("bad combined pmuls output operand")); |
| 2430 | } |
| 2431 | /* Generate warning if the destination register for padd / psub |
| 2432 | and pmuls is the same ( only for A0 or A1 ). |
| 2433 | If the last nibble is 1010 then A0 is used in both |
| 2434 | padd / psub and pmuls. If it is 1111 then A1 is used |
| 2435 | as destination register in both padd / psub and pmuls. */ |
| 2436 | |
| 2437 | if ((((field_b | reg_efg) & 0x000F) == 0x000A) |
| 2438 | || (((field_b | reg_efg) & 0x000F) == 0x000F)) |
| 2439 | as_warn (_("destination register is same for parallel insns")); |
| 2440 | } |
| 2441 | field_b += 0x4000 + reg_efg; |
| 2442 | break; |
| 2443 | default: |
| 2444 | abort (); |
| 2445 | } |
| 2446 | if (cond) |
| 2447 | { |
| 2448 | as_bad (_("condition not followed by conditionalizable insn")); |
| 2449 | cond = 0; |
| 2450 | } |
| 2451 | if (! *op_end) |
| 2452 | break; |
| 2453 | skip_cond_check: |
| 2454 | opcode = find_cooked_opcode (&op_end); |
| 2455 | if (opcode == NULL) |
| 2456 | { |
| 2457 | (as_bad |
| 2458 | (_("unrecognized characters at end of parallel processing insn"))); |
| 2459 | break; |
| 2460 | } |
| 2461 | } |
| 2462 | |
| 2463 | move_code = movx | movy; |
| 2464 | if (field_b) |
| 2465 | { |
| 2466 | /* Parallel processing insn. */ |
| 2467 | unsigned long ppi_code = (movx | movy | 0xf800) << 16 | field_b; |
| 2468 | |
| 2469 | output = frag_more (4); |
| 2470 | size = 4; |
| 2471 | if (! target_big_endian) |
| 2472 | { |
| 2473 | output[3] = ppi_code >> 8; |
| 2474 | output[2] = ppi_code; |
| 2475 | } |
| 2476 | else |
| 2477 | { |
| 2478 | output[2] = ppi_code >> 8; |
| 2479 | output[3] = ppi_code; |
| 2480 | } |
| 2481 | move_code |= 0xf800; |
| 2482 | } |
| 2483 | else |
| 2484 | { |
| 2485 | /* Just a double data transfer. */ |
| 2486 | output = frag_more (2); |
| 2487 | size = 2; |
| 2488 | } |
| 2489 | if (! target_big_endian) |
| 2490 | { |
| 2491 | output[1] = move_code >> 8; |
| 2492 | output[0] = move_code; |
| 2493 | } |
| 2494 | else |
| 2495 | { |
| 2496 | output[0] = move_code >> 8; |
| 2497 | output[1] = move_code; |
| 2498 | } |
| 2499 | return size; |
| 2500 | } |
| 2501 | |
| 2502 | /* This is the guts of the machine-dependent assembler. STR points to a |
| 2503 | machine dependent instruction. This function is supposed to emit |
| 2504 | the frags/bytes it assembles to. */ |
| 2505 | |
| 2506 | void |
| 2507 | md_assemble (char *str) |
| 2508 | { |
| 2509 | char *op_end; |
| 2510 | sh_operand_info operand[3]; |
| 2511 | sh_opcode_info *opcode; |
| 2512 | unsigned int size = 0; |
| 2513 | char *initial_str = str; |
| 2514 | |
| 2515 | opcode = find_cooked_opcode (&str); |
| 2516 | op_end = str; |
| 2517 | |
| 2518 | if (opcode == NULL) |
| 2519 | { |
| 2520 | /* The opcode is not in the hash table. |
| 2521 | This means we definitely have an assembly failure, |
| 2522 | but the instruction may be valid in another CPU variant. |
| 2523 | In this case emit something better than 'unknown opcode'. |
| 2524 | Search the full table in sh-opc.h to check. */ |
| 2525 | |
| 2526 | char *name = initial_str; |
| 2527 | int name_length = 0; |
| 2528 | const sh_opcode_info *op; |
| 2529 | bfd_boolean found = FALSE; |
| 2530 | |
| 2531 | /* Identify opcode in string. */ |
| 2532 | while (ISSPACE (*name)) |
| 2533 | name++; |
| 2534 | |
| 2535 | while (name[name_length] != '\0' && !ISSPACE (name[name_length])) |
| 2536 | name_length++; |
| 2537 | |
| 2538 | /* Search for opcode in full list. */ |
| 2539 | for (op = sh_table; op->name; op++) |
| 2540 | { |
| 2541 | if (strncasecmp (op->name, name, name_length) == 0 |
| 2542 | && op->name[name_length] == '\0') |
| 2543 | { |
| 2544 | found = TRUE; |
| 2545 | break; |
| 2546 | } |
| 2547 | } |
| 2548 | |
| 2549 | if (found) |
| 2550 | as_bad (_("opcode not valid for this cpu variant")); |
| 2551 | else |
| 2552 | as_bad (_("unknown opcode")); |
| 2553 | |
| 2554 | return; |
| 2555 | } |
| 2556 | |
| 2557 | if (sh_relax |
| 2558 | && ! seg_info (now_seg)->tc_segment_info_data.in_code) |
| 2559 | { |
| 2560 | /* Output a CODE reloc to tell the linker that the following |
| 2561 | bytes are instructions, not data. */ |
| 2562 | fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0, |
| 2563 | BFD_RELOC_SH_CODE); |
| 2564 | seg_info (now_seg)->tc_segment_info_data.in_code = 1; |
| 2565 | } |
| 2566 | |
| 2567 | if (opcode->nibbles[0] == PPI) |
| 2568 | { |
| 2569 | size = assemble_ppi (op_end, opcode); |
| 2570 | } |
| 2571 | else |
| 2572 | { |
| 2573 | if (opcode->arg[0] == A_BDISP12 |
| 2574 | || opcode->arg[0] == A_BDISP8) |
| 2575 | { |
| 2576 | /* Since we skip get_specific here, we have to check & update |
| 2577 | valid_arch now. */ |
| 2578 | if (SH_MERGE_ARCH_SET_VALID (valid_arch, opcode->arch)) |
| 2579 | valid_arch = SH_MERGE_ARCH_SET (valid_arch, opcode->arch); |
| 2580 | else |
| 2581 | as_bad (_("Delayed branches not available on SH1")); |
| 2582 | parse_exp (op_end + 1, &operand[0]); |
| 2583 | build_relax (opcode, &operand[0]); |
| 2584 | |
| 2585 | /* All branches are currently 16 bit. */ |
| 2586 | size = 2; |
| 2587 | } |
| 2588 | else |
| 2589 | { |
| 2590 | if (opcode->arg[0] == A_END) |
| 2591 | { |
| 2592 | /* Ignore trailing whitespace. If there is any, it has already |
| 2593 | been compressed to a single space. */ |
| 2594 | if (*op_end == ' ') |
| 2595 | op_end++; |
| 2596 | } |
| 2597 | else |
| 2598 | { |
| 2599 | op_end = get_operands (opcode, op_end, operand); |
| 2600 | } |
| 2601 | opcode = get_specific (opcode, operand); |
| 2602 | |
| 2603 | if (opcode == 0) |
| 2604 | { |
| 2605 | /* Couldn't find an opcode which matched the operands. */ |
| 2606 | char *where = frag_more (2); |
| 2607 | size = 2; |
| 2608 | |
| 2609 | where[0] = 0x0; |
| 2610 | where[1] = 0x0; |
| 2611 | as_bad (_("invalid operands for opcode")); |
| 2612 | } |
| 2613 | else |
| 2614 | { |
| 2615 | if (*op_end) |
| 2616 | as_bad (_("excess operands: '%s'"), op_end); |
| 2617 | |
| 2618 | size = build_Mytes (opcode, operand); |
| 2619 | } |
| 2620 | } |
| 2621 | } |
| 2622 | |
| 2623 | dwarf2_emit_insn (size); |
| 2624 | } |
| 2625 | |
| 2626 | /* This routine is called each time a label definition is seen. It |
| 2627 | emits a BFD_RELOC_SH_LABEL reloc if necessary. */ |
| 2628 | |
| 2629 | void |
| 2630 | sh_frob_label (symbolS *sym) |
| 2631 | { |
| 2632 | static fragS *last_label_frag; |
| 2633 | static int last_label_offset; |
| 2634 | |
| 2635 | if (sh_relax |
| 2636 | && seg_info (now_seg)->tc_segment_info_data.in_code) |
| 2637 | { |
| 2638 | int offset; |
| 2639 | |
| 2640 | offset = frag_now_fix (); |
| 2641 | if (frag_now != last_label_frag |
| 2642 | || offset != last_label_offset) |
| 2643 | { |
| 2644 | fix_new (frag_now, offset, 2, &abs_symbol, 0, 0, BFD_RELOC_SH_LABEL); |
| 2645 | last_label_frag = frag_now; |
| 2646 | last_label_offset = offset; |
| 2647 | } |
| 2648 | } |
| 2649 | |
| 2650 | dwarf2_emit_label (sym); |
| 2651 | } |
| 2652 | |
| 2653 | /* This routine is called when the assembler is about to output some |
| 2654 | data. It emits a BFD_RELOC_SH_DATA reloc if necessary. */ |
| 2655 | |
| 2656 | void |
| 2657 | sh_flush_pending_output (void) |
| 2658 | { |
| 2659 | if (sh_relax |
| 2660 | && seg_info (now_seg)->tc_segment_info_data.in_code) |
| 2661 | { |
| 2662 | fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0, |
| 2663 | BFD_RELOC_SH_DATA); |
| 2664 | seg_info (now_seg)->tc_segment_info_data.in_code = 0; |
| 2665 | } |
| 2666 | } |
| 2667 | |
| 2668 | symbolS * |
| 2669 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
| 2670 | { |
| 2671 | return 0; |
| 2672 | } |
| 2673 | |
| 2674 | /* Various routines to kill one day. */ |
| 2675 | |
| 2676 | const char * |
| 2677 | md_atof (int type, char *litP, int *sizeP) |
| 2678 | { |
| 2679 | return ieee_md_atof (type, litP, sizeP, target_big_endian); |
| 2680 | } |
| 2681 | |
| 2682 | /* Handle the .uses pseudo-op. This pseudo-op is used just before a |
| 2683 | call instruction. It refers to a label of the instruction which |
| 2684 | loads the register which the call uses. We use it to generate a |
| 2685 | special reloc for the linker. */ |
| 2686 | |
| 2687 | static void |
| 2688 | s_uses (int ignore ATTRIBUTE_UNUSED) |
| 2689 | { |
| 2690 | expressionS ex; |
| 2691 | |
| 2692 | if (! sh_relax) |
| 2693 | as_warn (_(".uses pseudo-op seen when not relaxing")); |
| 2694 | |
| 2695 | expression (&ex); |
| 2696 | |
| 2697 | if (ex.X_op != O_symbol || ex.X_add_number != 0) |
| 2698 | { |
| 2699 | as_bad (_("bad .uses format")); |
| 2700 | ignore_rest_of_line (); |
| 2701 | return; |
| 2702 | } |
| 2703 | |
| 2704 | fix_new_exp (frag_now, frag_now_fix (), 2, &ex, 1, BFD_RELOC_SH_USES); |
| 2705 | |
| 2706 | demand_empty_rest_of_line (); |
| 2707 | } |
| 2708 | \f |
| 2709 | enum options |
| 2710 | { |
| 2711 | OPTION_RELAX = OPTION_MD_BASE, |
| 2712 | OPTION_BIG, |
| 2713 | OPTION_LITTLE, |
| 2714 | OPTION_SMALL, |
| 2715 | OPTION_DSP, |
| 2716 | OPTION_ISA, |
| 2717 | OPTION_RENESAS, |
| 2718 | OPTION_ALLOW_REG_PREFIX, |
| 2719 | OPTION_H_TICK_HEX, |
| 2720 | #ifdef OBJ_ELF |
| 2721 | OPTION_FDPIC, |
| 2722 | #endif |
| 2723 | OPTION_DUMMY /* Not used. This is just here to make it easy to add and subtract options from this enum. */ |
| 2724 | }; |
| 2725 | |
| 2726 | const char *md_shortopts = ""; |
| 2727 | struct option md_longopts[] = |
| 2728 | { |
| 2729 | {"relax", no_argument, NULL, OPTION_RELAX}, |
| 2730 | {"big", no_argument, NULL, OPTION_BIG}, |
| 2731 | {"little", no_argument, NULL, OPTION_LITTLE}, |
| 2732 | /* The next two switches are here because the |
| 2733 | generic parts of the linker testsuite uses them. */ |
| 2734 | {"EB", no_argument, NULL, OPTION_BIG}, |
| 2735 | {"EL", no_argument, NULL, OPTION_LITTLE}, |
| 2736 | {"small", no_argument, NULL, OPTION_SMALL}, |
| 2737 | {"dsp", no_argument, NULL, OPTION_DSP}, |
| 2738 | {"isa", required_argument, NULL, OPTION_ISA}, |
| 2739 | {"renesas", no_argument, NULL, OPTION_RENESAS}, |
| 2740 | {"allow-reg-prefix", no_argument, NULL, OPTION_ALLOW_REG_PREFIX}, |
| 2741 | |
| 2742 | { "h-tick-hex", no_argument, NULL, OPTION_H_TICK_HEX }, |
| 2743 | |
| 2744 | #ifdef OBJ_ELF |
| 2745 | {"fdpic", no_argument, NULL, OPTION_FDPIC}, |
| 2746 | #endif |
| 2747 | |
| 2748 | {NULL, no_argument, NULL, 0} |
| 2749 | }; |
| 2750 | size_t md_longopts_size = sizeof (md_longopts); |
| 2751 | |
| 2752 | int |
| 2753 | md_parse_option (int c, const char *arg ATTRIBUTE_UNUSED) |
| 2754 | { |
| 2755 | switch (c) |
| 2756 | { |
| 2757 | case OPTION_RELAX: |
| 2758 | sh_relax = 1; |
| 2759 | break; |
| 2760 | |
| 2761 | case OPTION_BIG: |
| 2762 | target_big_endian = 1; |
| 2763 | break; |
| 2764 | |
| 2765 | case OPTION_LITTLE: |
| 2766 | target_big_endian = 0; |
| 2767 | break; |
| 2768 | |
| 2769 | case OPTION_SMALL: |
| 2770 | sh_small = 1; |
| 2771 | break; |
| 2772 | |
| 2773 | case OPTION_DSP: |
| 2774 | preset_target_arch = arch_sh_up & ~(arch_sh_sp_fpu|arch_sh_dp_fpu); |
| 2775 | break; |
| 2776 | |
| 2777 | case OPTION_RENESAS: |
| 2778 | dont_adjust_reloc_32 = 1; |
| 2779 | break; |
| 2780 | |
| 2781 | case OPTION_ALLOW_REG_PREFIX: |
| 2782 | allow_dollar_register_prefix = 1; |
| 2783 | break; |
| 2784 | |
| 2785 | case OPTION_ISA: |
| 2786 | if (strcasecmp (arg, "dsp") == 0) |
| 2787 | preset_target_arch = arch_sh_up & ~(arch_sh_sp_fpu|arch_sh_dp_fpu); |
| 2788 | else if (strcasecmp (arg, "fp") == 0) |
| 2789 | preset_target_arch = arch_sh_up & ~arch_sh_has_dsp; |
| 2790 | else if (strcasecmp (arg, "any") == 0) |
| 2791 | preset_target_arch = arch_sh_up; |
| 2792 | else |
| 2793 | { |
| 2794 | extern const bfd_arch_info_type bfd_sh_arch; |
| 2795 | bfd_arch_info_type const *bfd_arch = &bfd_sh_arch; |
| 2796 | |
| 2797 | preset_target_arch = 0; |
| 2798 | for (; bfd_arch; bfd_arch=bfd_arch->next) |
| 2799 | { |
| 2800 | int len = strlen(bfd_arch->printable_name); |
| 2801 | |
| 2802 | if (strncasecmp (bfd_arch->printable_name, arg, len) != 0) |
| 2803 | continue; |
| 2804 | |
| 2805 | if (arg[len] == '\0') |
| 2806 | preset_target_arch = |
| 2807 | sh_get_arch_from_bfd_mach (bfd_arch->mach); |
| 2808 | else if (strcasecmp(&arg[len], "-up") == 0) |
| 2809 | preset_target_arch = |
| 2810 | sh_get_arch_up_from_bfd_mach (bfd_arch->mach); |
| 2811 | else |
| 2812 | continue; |
| 2813 | break; |
| 2814 | } |
| 2815 | |
| 2816 | if (!preset_target_arch) |
| 2817 | as_bad (_("Invalid argument to --isa option: %s"), arg); |
| 2818 | } |
| 2819 | break; |
| 2820 | |
| 2821 | case OPTION_H_TICK_HEX: |
| 2822 | enable_h_tick_hex = 1; |
| 2823 | break; |
| 2824 | |
| 2825 | #ifdef OBJ_ELF |
| 2826 | case OPTION_FDPIC: |
| 2827 | sh_fdpic = TRUE; |
| 2828 | break; |
| 2829 | #endif /* OBJ_ELF */ |
| 2830 | |
| 2831 | default: |
| 2832 | return 0; |
| 2833 | } |
| 2834 | |
| 2835 | return 1; |
| 2836 | } |
| 2837 | |
| 2838 | void |
| 2839 | md_show_usage (FILE *stream) |
| 2840 | { |
| 2841 | fprintf (stream, _("\ |
| 2842 | SH options:\n\ |
| 2843 | --little generate little endian code\n\ |
| 2844 | --big generate big endian code\n\ |
| 2845 | --relax alter jump instructions for long displacements\n\ |
| 2846 | --renesas disable optimization with section symbol for\n\ |
| 2847 | compatibility with Renesas assembler.\n\ |
| 2848 | --small align sections to 4 byte boundaries, not 16\n\ |
| 2849 | --dsp enable sh-dsp insns, and disable floating-point ISAs.\n\ |
| 2850 | --allow-reg-prefix allow '$' as a register name prefix.\n\ |
| 2851 | --isa=[any use most appropriate isa\n\ |
| 2852 | | dsp same as '-dsp'\n\ |
| 2853 | | fp")); |
| 2854 | { |
| 2855 | extern const bfd_arch_info_type bfd_sh_arch; |
| 2856 | bfd_arch_info_type const *bfd_arch = &bfd_sh_arch; |
| 2857 | |
| 2858 | for (; bfd_arch; bfd_arch=bfd_arch->next) |
| 2859 | { |
| 2860 | fprintf (stream, "\n | %s", bfd_arch->printable_name); |
| 2861 | fprintf (stream, "\n | %s-up", bfd_arch->printable_name); |
| 2862 | } |
| 2863 | } |
| 2864 | fprintf (stream, "]\n"); |
| 2865 | #ifdef OBJ_ELF |
| 2866 | fprintf (stream, _("\ |
| 2867 | --fdpic generate an FDPIC object file\n")); |
| 2868 | #endif /* OBJ_ELF */ |
| 2869 | } |
| 2870 | \f |
| 2871 | /* This struct is used to pass arguments to sh_count_relocs through |
| 2872 | bfd_map_over_sections. */ |
| 2873 | |
| 2874 | struct sh_count_relocs |
| 2875 | { |
| 2876 | /* Symbol we are looking for. */ |
| 2877 | symbolS *sym; |
| 2878 | /* Count of relocs found. */ |
| 2879 | int count; |
| 2880 | }; |
| 2881 | |
| 2882 | /* Count the number of fixups in a section which refer to a particular |
| 2883 | symbol. This is called via bfd_map_over_sections. */ |
| 2884 | |
| 2885 | static void |
| 2886 | sh_count_relocs (bfd *abfd ATTRIBUTE_UNUSED, segT sec, void *data) |
| 2887 | { |
| 2888 | struct sh_count_relocs *info = (struct sh_count_relocs *) data; |
| 2889 | segment_info_type *seginfo; |
| 2890 | symbolS *sym; |
| 2891 | fixS *fix; |
| 2892 | |
| 2893 | seginfo = seg_info (sec); |
| 2894 | if (seginfo == NULL) |
| 2895 | return; |
| 2896 | |
| 2897 | sym = info->sym; |
| 2898 | for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next) |
| 2899 | { |
| 2900 | if (fix->fx_addsy == sym) |
| 2901 | { |
| 2902 | ++info->count; |
| 2903 | fix->fx_tcbit = 1; |
| 2904 | } |
| 2905 | } |
| 2906 | } |
| 2907 | |
| 2908 | /* Handle the count relocs for a particular section. |
| 2909 | This is called via bfd_map_over_sections. */ |
| 2910 | |
| 2911 | static void |
| 2912 | sh_frob_section (bfd *abfd ATTRIBUTE_UNUSED, segT sec, |
| 2913 | void *ignore ATTRIBUTE_UNUSED) |
| 2914 | { |
| 2915 | segment_info_type *seginfo; |
| 2916 | fixS *fix; |
| 2917 | |
| 2918 | seginfo = seg_info (sec); |
| 2919 | if (seginfo == NULL) |
| 2920 | return; |
| 2921 | |
| 2922 | for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next) |
| 2923 | { |
| 2924 | symbolS *sym; |
| 2925 | bfd_vma val; |
| 2926 | fixS *fscan; |
| 2927 | struct sh_count_relocs info; |
| 2928 | |
| 2929 | if (fix->fx_r_type != BFD_RELOC_SH_USES) |
| 2930 | continue; |
| 2931 | |
| 2932 | /* The BFD_RELOC_SH_USES reloc should refer to a defined local |
| 2933 | symbol in the same section. */ |
| 2934 | sym = fix->fx_addsy; |
| 2935 | if (sym == NULL |
| 2936 | || fix->fx_subsy != NULL |
| 2937 | || fix->fx_addnumber != 0 |
| 2938 | || S_GET_SEGMENT (sym) != sec |
| 2939 | || S_IS_EXTERNAL (sym)) |
| 2940 | { |
| 2941 | as_warn_where (fix->fx_file, fix->fx_line, |
| 2942 | _(".uses does not refer to a local symbol in the same section")); |
| 2943 | continue; |
| 2944 | } |
| 2945 | |
| 2946 | /* Look through the fixups again, this time looking for one |
| 2947 | at the same location as sym. */ |
| 2948 | val = S_GET_VALUE (sym); |
| 2949 | for (fscan = seginfo->fix_root; |
| 2950 | fscan != NULL; |
| 2951 | fscan = fscan->fx_next) |
| 2952 | if (val == fscan->fx_frag->fr_address + fscan->fx_where |
| 2953 | && fscan->fx_r_type != BFD_RELOC_SH_ALIGN |
| 2954 | && fscan->fx_r_type != BFD_RELOC_SH_CODE |
| 2955 | && fscan->fx_r_type != BFD_RELOC_SH_DATA |
| 2956 | && fscan->fx_r_type != BFD_RELOC_SH_LABEL) |
| 2957 | break; |
| 2958 | if (fscan == NULL) |
| 2959 | { |
| 2960 | as_warn_where (fix->fx_file, fix->fx_line, |
| 2961 | _("can't find fixup pointed to by .uses")); |
| 2962 | continue; |
| 2963 | } |
| 2964 | |
| 2965 | if (fscan->fx_tcbit) |
| 2966 | { |
| 2967 | /* We've already done this one. */ |
| 2968 | continue; |
| 2969 | } |
| 2970 | |
| 2971 | /* The variable fscan should also be a fixup to a local symbol |
| 2972 | in the same section. */ |
| 2973 | sym = fscan->fx_addsy; |
| 2974 | if (sym == NULL |
| 2975 | || fscan->fx_subsy != NULL |
| 2976 | || fscan->fx_addnumber != 0 |
| 2977 | || S_GET_SEGMENT (sym) != sec |
| 2978 | || S_IS_EXTERNAL (sym)) |
| 2979 | { |
| 2980 | as_warn_where (fix->fx_file, fix->fx_line, |
| 2981 | _(".uses target does not refer to a local symbol in the same section")); |
| 2982 | continue; |
| 2983 | } |
| 2984 | |
| 2985 | /* Now we look through all the fixups of all the sections, |
| 2986 | counting the number of times we find a reference to sym. */ |
| 2987 | info.sym = sym; |
| 2988 | info.count = 0; |
| 2989 | bfd_map_over_sections (stdoutput, sh_count_relocs, &info); |
| 2990 | |
| 2991 | if (info.count < 1) |
| 2992 | abort (); |
| 2993 | |
| 2994 | /* Generate a BFD_RELOC_SH_COUNT fixup at the location of sym. |
| 2995 | We have already adjusted the value of sym to include the |
| 2996 | fragment address, so we undo that adjustment here. */ |
| 2997 | subseg_change (sec, 0); |
| 2998 | fix_new (fscan->fx_frag, |
| 2999 | S_GET_VALUE (sym) - fscan->fx_frag->fr_address, |
| 3000 | 4, &abs_symbol, info.count, 0, BFD_RELOC_SH_COUNT); |
| 3001 | } |
| 3002 | } |
| 3003 | |
| 3004 | /* This function is called after the symbol table has been completed, |
| 3005 | but before the relocs or section contents have been written out. |
| 3006 | If we have seen any .uses pseudo-ops, they point to an instruction |
| 3007 | which loads a register with the address of a function. We look |
| 3008 | through the fixups to find where the function address is being |
| 3009 | loaded from. We then generate a COUNT reloc giving the number of |
| 3010 | times that function address is referred to. The linker uses this |
| 3011 | information when doing relaxing, to decide when it can eliminate |
| 3012 | the stored function address entirely. */ |
| 3013 | |
| 3014 | void |
| 3015 | sh_frob_file (void) |
| 3016 | { |
| 3017 | if (! sh_relax) |
| 3018 | return; |
| 3019 | |
| 3020 | bfd_map_over_sections (stdoutput, sh_frob_section, NULL); |
| 3021 | } |
| 3022 | |
| 3023 | /* Called after relaxing. Set the correct sizes of the fragments, and |
| 3024 | create relocs so that md_apply_fix will fill in the correct values. */ |
| 3025 | |
| 3026 | void |
| 3027 | md_convert_frag (bfd *headers ATTRIBUTE_UNUSED, segT seg, fragS *fragP) |
| 3028 | { |
| 3029 | int donerelax = 0; |
| 3030 | |
| 3031 | switch (fragP->fr_subtype) |
| 3032 | { |
| 3033 | case C (COND_JUMP, COND8): |
| 3034 | case C (COND_JUMP_DELAY, COND8): |
| 3035 | subseg_change (seg, 0); |
| 3036 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset, |
| 3037 | 1, BFD_RELOC_SH_PCDISP8BY2); |
| 3038 | fragP->fr_fix += 2; |
| 3039 | fragP->fr_var = 0; |
| 3040 | break; |
| 3041 | |
| 3042 | case C (UNCOND_JUMP, UNCOND12): |
| 3043 | subseg_change (seg, 0); |
| 3044 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset, |
| 3045 | 1, BFD_RELOC_SH_PCDISP12BY2); |
| 3046 | fragP->fr_fix += 2; |
| 3047 | fragP->fr_var = 0; |
| 3048 | break; |
| 3049 | |
| 3050 | case C (UNCOND_JUMP, UNCOND32): |
| 3051 | case C (UNCOND_JUMP, UNDEF_WORD_DISP): |
| 3052 | if (fragP->fr_symbol == NULL) |
| 3053 | as_bad_where (fragP->fr_file, fragP->fr_line, |
| 3054 | _("displacement overflows 12-bit field")); |
| 3055 | else if (S_IS_DEFINED (fragP->fr_symbol)) |
| 3056 | as_bad_where (fragP->fr_file, fragP->fr_line, |
| 3057 | _("displacement to defined symbol %s overflows 12-bit field"), |
| 3058 | S_GET_NAME (fragP->fr_symbol)); |
| 3059 | else |
| 3060 | as_bad_where (fragP->fr_file, fragP->fr_line, |
| 3061 | _("displacement to undefined symbol %s overflows 12-bit field"), |
| 3062 | S_GET_NAME (fragP->fr_symbol)); |
| 3063 | /* Stabilize this frag, so we don't trip an assert. */ |
| 3064 | fragP->fr_fix += fragP->fr_var; |
| 3065 | fragP->fr_var = 0; |
| 3066 | break; |
| 3067 | |
| 3068 | case C (COND_JUMP, COND12): |
| 3069 | case C (COND_JUMP_DELAY, COND12): |
| 3070 | /* A bcond won't fit, so turn it into a b!cond; bra disp; nop. */ |
| 3071 | /* I found that a relax failure for gcc.c-torture/execute/930628-1.c |
| 3072 | was due to gas incorrectly relaxing an out-of-range conditional |
| 3073 | branch with delay slot. It turned: |
| 3074 | bf.s L6 (slot mov.l r12,@(44,r0)) |
| 3075 | into: |
| 3076 | |
| 3077 | 2c: 8f 01 a0 8b bf.s 32 <_main+32> (slot bra L6) |
| 3078 | 30: 00 09 nop |
| 3079 | 32: 10 cb mov.l r12,@(44,r0) |
| 3080 | Therefore, branches with delay slots have to be handled |
| 3081 | differently from ones without delay slots. */ |
| 3082 | { |
| 3083 | unsigned char *buffer = |
| 3084 | (unsigned char *) (fragP->fr_fix + fragP->fr_literal); |
| 3085 | int highbyte = target_big_endian ? 0 : 1; |
| 3086 | int lowbyte = target_big_endian ? 1 : 0; |
| 3087 | int delay = fragP->fr_subtype == C (COND_JUMP_DELAY, COND12); |
| 3088 | |
| 3089 | /* Toggle the true/false bit of the bcond. */ |
| 3090 | buffer[highbyte] ^= 0x2; |
| 3091 | |
| 3092 | /* If this is a delayed branch, we may not put the bra in the |
| 3093 | slot. So we change it to a non-delayed branch, like that: |
| 3094 | b! cond slot_label; bra disp; slot_label: slot_insn |
| 3095 | ??? We should try if swapping the conditional branch and |
| 3096 | its delay-slot insn already makes the branch reach. */ |
| 3097 | |
| 3098 | /* Build a relocation to six / four bytes farther on. */ |
| 3099 | subseg_change (seg, 0); |
| 3100 | fix_new (fragP, fragP->fr_fix, 2, section_symbol (seg), |
| 3101 | fragP->fr_address + fragP->fr_fix + (delay ? 4 : 6), |
| 3102 | 1, BFD_RELOC_SH_PCDISP8BY2); |
| 3103 | |
| 3104 | /* Set up a jump instruction. */ |
| 3105 | buffer[highbyte + 2] = 0xa0; |
| 3106 | buffer[lowbyte + 2] = 0; |
| 3107 | fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol, |
| 3108 | fragP->fr_offset, 1, BFD_RELOC_SH_PCDISP12BY2); |
| 3109 | |
| 3110 | if (delay) |
| 3111 | { |
| 3112 | buffer[highbyte] &= ~0x4; /* Removes delay slot from branch. */ |
| 3113 | fragP->fr_fix += 4; |
| 3114 | } |
| 3115 | else |
| 3116 | { |
| 3117 | /* Fill in a NOP instruction. */ |
| 3118 | buffer[highbyte + 4] = 0x0; |
| 3119 | buffer[lowbyte + 4] = 0x9; |
| 3120 | |
| 3121 | fragP->fr_fix += 6; |
| 3122 | } |
| 3123 | fragP->fr_var = 0; |
| 3124 | donerelax = 1; |
| 3125 | } |
| 3126 | break; |
| 3127 | |
| 3128 | case C (COND_JUMP, COND32): |
| 3129 | case C (COND_JUMP_DELAY, COND32): |
| 3130 | case C (COND_JUMP, UNDEF_WORD_DISP): |
| 3131 | case C (COND_JUMP_DELAY, UNDEF_WORD_DISP): |
| 3132 | if (fragP->fr_symbol == NULL) |
| 3133 | as_bad_where (fragP->fr_file, fragP->fr_line, |
| 3134 | _("displacement overflows 8-bit field")); |
| 3135 | else if (S_IS_DEFINED (fragP->fr_symbol)) |
| 3136 | as_bad_where (fragP->fr_file, fragP->fr_line, |
| 3137 | _("displacement to defined symbol %s overflows 8-bit field"), |
| 3138 | S_GET_NAME (fragP->fr_symbol)); |
| 3139 | else |
| 3140 | as_bad_where (fragP->fr_file, fragP->fr_line, |
| 3141 | _("displacement to undefined symbol %s overflows 8-bit field "), |
| 3142 | S_GET_NAME (fragP->fr_symbol)); |
| 3143 | /* Stabilize this frag, so we don't trip an assert. */ |
| 3144 | fragP->fr_fix += fragP->fr_var; |
| 3145 | fragP->fr_var = 0; |
| 3146 | break; |
| 3147 | |
| 3148 | default: |
| 3149 | abort (); |
| 3150 | } |
| 3151 | |
| 3152 | if (donerelax && !sh_relax) |
| 3153 | as_warn_where (fragP->fr_file, fragP->fr_line, |
| 3154 | _("overflow in branch to %s; converted into longer instruction sequence"), |
| 3155 | (fragP->fr_symbol != NULL |
| 3156 | ? S_GET_NAME (fragP->fr_symbol) |
| 3157 | : "")); |
| 3158 | } |
| 3159 | |
| 3160 | valueT |
| 3161 | md_section_align (segT seg ATTRIBUTE_UNUSED, valueT size) |
| 3162 | { |
| 3163 | #ifdef OBJ_ELF |
| 3164 | return size; |
| 3165 | #else /* ! OBJ_ELF */ |
| 3166 | return ((size + (1 << bfd_section_alignment (seg)) - 1) |
| 3167 | & -(1 << bfd_section_alignment (seg))); |
| 3168 | #endif /* ! OBJ_ELF */ |
| 3169 | } |
| 3170 | |
| 3171 | /* This static variable is set by s_uacons to tell sh_cons_align that |
| 3172 | the expression does not need to be aligned. */ |
| 3173 | |
| 3174 | static int sh_no_align_cons = 0; |
| 3175 | |
| 3176 | /* This handles the unaligned space allocation pseudo-ops, such as |
| 3177 | .uaword. .uaword is just like .word, but the value does not need |
| 3178 | to be aligned. */ |
| 3179 | |
| 3180 | static void |
| 3181 | s_uacons (int bytes) |
| 3182 | { |
| 3183 | /* Tell sh_cons_align not to align this value. */ |
| 3184 | sh_no_align_cons = 1; |
| 3185 | cons (bytes); |
| 3186 | } |
| 3187 | |
| 3188 | /* If a .word, et. al., pseud-op is seen, warn if the value is not |
| 3189 | aligned correctly. Note that this can cause warnings to be issued |
| 3190 | when assembling initialized structured which were declared with the |
| 3191 | packed attribute. FIXME: Perhaps we should require an option to |
| 3192 | enable this warning? */ |
| 3193 | |
| 3194 | void |
| 3195 | sh_cons_align (int nbytes) |
| 3196 | { |
| 3197 | int nalign; |
| 3198 | |
| 3199 | if (sh_no_align_cons) |
| 3200 | { |
| 3201 | /* This is an unaligned pseudo-op. */ |
| 3202 | sh_no_align_cons = 0; |
| 3203 | return; |
| 3204 | } |
| 3205 | |
| 3206 | nalign = 0; |
| 3207 | while ((nbytes & 1) == 0) |
| 3208 | { |
| 3209 | ++nalign; |
| 3210 | nbytes >>= 1; |
| 3211 | } |
| 3212 | |
| 3213 | if (nalign == 0) |
| 3214 | return; |
| 3215 | |
| 3216 | if (now_seg == absolute_section) |
| 3217 | { |
| 3218 | if ((abs_section_offset & ((1 << nalign) - 1)) != 0) |
| 3219 | as_warn (_("misaligned data")); |
| 3220 | return; |
| 3221 | } |
| 3222 | |
| 3223 | frag_var (rs_align_test, 1, 1, (relax_substateT) 0, |
| 3224 | (symbolS *) NULL, (offsetT) nalign, (char *) NULL); |
| 3225 | |
| 3226 | record_alignment (now_seg, nalign); |
| 3227 | } |
| 3228 | |
| 3229 | /* When relaxing, we need to output a reloc for any .align directive |
| 3230 | that requests alignment to a four byte boundary or larger. This is |
| 3231 | also where we check for misaligned data. */ |
| 3232 | |
| 3233 | void |
| 3234 | sh_handle_align (fragS *frag) |
| 3235 | { |
| 3236 | int bytes = frag->fr_next->fr_address - frag->fr_address - frag->fr_fix; |
| 3237 | |
| 3238 | if (frag->fr_type == rs_align_code) |
| 3239 | { |
| 3240 | static const unsigned char big_nop_pattern[] = { 0x00, 0x09 }; |
| 3241 | static const unsigned char little_nop_pattern[] = { 0x09, 0x00 }; |
| 3242 | |
| 3243 | char *p = frag->fr_literal + frag->fr_fix; |
| 3244 | |
| 3245 | if (bytes & 1) |
| 3246 | { |
| 3247 | *p++ = 0; |
| 3248 | bytes--; |
| 3249 | frag->fr_fix += 1; |
| 3250 | } |
| 3251 | |
| 3252 | if (target_big_endian) |
| 3253 | { |
| 3254 | memcpy (p, big_nop_pattern, sizeof big_nop_pattern); |
| 3255 | frag->fr_var = sizeof big_nop_pattern; |
| 3256 | } |
| 3257 | else |
| 3258 | { |
| 3259 | memcpy (p, little_nop_pattern, sizeof little_nop_pattern); |
| 3260 | frag->fr_var = sizeof little_nop_pattern; |
| 3261 | } |
| 3262 | } |
| 3263 | else if (frag->fr_type == rs_align_test) |
| 3264 | { |
| 3265 | if (bytes != 0) |
| 3266 | as_bad_where (frag->fr_file, frag->fr_line, _("misaligned data")); |
| 3267 | } |
| 3268 | |
| 3269 | if (sh_relax |
| 3270 | && (frag->fr_type == rs_align |
| 3271 | || frag->fr_type == rs_align_code) |
| 3272 | && frag->fr_address + frag->fr_fix > 0 |
| 3273 | && frag->fr_offset > 1 |
| 3274 | && now_seg != bss_section) |
| 3275 | fix_new (frag, frag->fr_fix, 2, &abs_symbol, frag->fr_offset, 0, |
| 3276 | BFD_RELOC_SH_ALIGN); |
| 3277 | } |
| 3278 | |
| 3279 | /* See whether the relocation should be resolved locally. */ |
| 3280 | |
| 3281 | static bfd_boolean |
| 3282 | sh_local_pcrel (fixS *fix) |
| 3283 | { |
| 3284 | return (! sh_relax |
| 3285 | && (fix->fx_r_type == BFD_RELOC_SH_PCDISP8BY2 |
| 3286 | || fix->fx_r_type == BFD_RELOC_SH_PCDISP12BY2 |
| 3287 | || fix->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY2 |
| 3288 | || fix->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY4 |
| 3289 | || fix->fx_r_type == BFD_RELOC_8_PCREL |
| 3290 | || fix->fx_r_type == BFD_RELOC_SH_SWITCH16 |
| 3291 | || fix->fx_r_type == BFD_RELOC_SH_SWITCH32)); |
| 3292 | } |
| 3293 | |
| 3294 | /* See whether we need to force a relocation into the output file. |
| 3295 | This is used to force out switch and PC relative relocations when |
| 3296 | relaxing. */ |
| 3297 | |
| 3298 | int |
| 3299 | sh_force_relocation (fixS *fix) |
| 3300 | { |
| 3301 | /* These relocations can't make it into a DSO, so no use forcing |
| 3302 | them for global symbols. */ |
| 3303 | if (sh_local_pcrel (fix)) |
| 3304 | return 0; |
| 3305 | |
| 3306 | /* Make sure some relocations get emitted. */ |
| 3307 | if (fix->fx_r_type == BFD_RELOC_SH_LOOP_START |
| 3308 | || fix->fx_r_type == BFD_RELOC_SH_LOOP_END |
| 3309 | || fix->fx_r_type == BFD_RELOC_SH_TLS_GD_32 |
| 3310 | || fix->fx_r_type == BFD_RELOC_SH_TLS_LD_32 |
| 3311 | || fix->fx_r_type == BFD_RELOC_SH_TLS_IE_32 |
| 3312 | || fix->fx_r_type == BFD_RELOC_SH_TLS_LDO_32 |
| 3313 | || fix->fx_r_type == BFD_RELOC_SH_TLS_LE_32 |
| 3314 | || generic_force_reloc (fix)) |
| 3315 | return 1; |
| 3316 | |
| 3317 | if (! sh_relax) |
| 3318 | return 0; |
| 3319 | |
| 3320 | return (fix->fx_pcrel |
| 3321 | || SWITCH_TABLE (fix) |
| 3322 | || fix->fx_r_type == BFD_RELOC_SH_COUNT |
| 3323 | || fix->fx_r_type == BFD_RELOC_SH_ALIGN |
| 3324 | || fix->fx_r_type == BFD_RELOC_SH_CODE |
| 3325 | || fix->fx_r_type == BFD_RELOC_SH_DATA |
| 3326 | || fix->fx_r_type == BFD_RELOC_SH_LABEL); |
| 3327 | } |
| 3328 | |
| 3329 | #ifdef OBJ_ELF |
| 3330 | bfd_boolean |
| 3331 | sh_fix_adjustable (fixS *fixP) |
| 3332 | { |
| 3333 | if (fixP->fx_r_type == BFD_RELOC_32_PLT_PCREL |
| 3334 | || fixP->fx_r_type == BFD_RELOC_32_GOT_PCREL |
| 3335 | || fixP->fx_r_type == BFD_RELOC_SH_GOT20 |
| 3336 | || fixP->fx_r_type == BFD_RELOC_SH_GOTPC |
| 3337 | || fixP->fx_r_type == BFD_RELOC_SH_GOTFUNCDESC |
| 3338 | || fixP->fx_r_type == BFD_RELOC_SH_GOTFUNCDESC20 |
| 3339 | || fixP->fx_r_type == BFD_RELOC_SH_GOTOFFFUNCDESC |
| 3340 | || fixP->fx_r_type == BFD_RELOC_SH_GOTOFFFUNCDESC20 |
| 3341 | || fixP->fx_r_type == BFD_RELOC_SH_FUNCDESC |
| 3342 | || ((fixP->fx_r_type == BFD_RELOC_32) && dont_adjust_reloc_32) |
| 3343 | || fixP->fx_r_type == BFD_RELOC_RVA) |
| 3344 | return 0; |
| 3345 | |
| 3346 | /* We need the symbol name for the VTABLE entries */ |
| 3347 | if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 3348 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 3349 | return 0; |
| 3350 | |
| 3351 | return 1; |
| 3352 | } |
| 3353 | |
| 3354 | void |
| 3355 | sh_elf_final_processing (void) |
| 3356 | { |
| 3357 | int val; |
| 3358 | |
| 3359 | /* Set file-specific flags to indicate if this code needs |
| 3360 | a processor with the sh-dsp / sh2e ISA to execute. */ |
| 3361 | val = sh_find_elf_flags (valid_arch); |
| 3362 | |
| 3363 | elf_elfheader (stdoutput)->e_flags &= ~EF_SH_MACH_MASK; |
| 3364 | elf_elfheader (stdoutput)->e_flags |= val; |
| 3365 | |
| 3366 | if (sh_fdpic) |
| 3367 | elf_elfheader (stdoutput)->e_flags |= EF_SH_FDPIC; |
| 3368 | } |
| 3369 | #endif |
| 3370 | |
| 3371 | #ifdef TE_UCLINUX |
| 3372 | /* Return the target format for uClinux. */ |
| 3373 | |
| 3374 | const char * |
| 3375 | sh_uclinux_target_format (void) |
| 3376 | { |
| 3377 | if (sh_fdpic) |
| 3378 | return (!target_big_endian ? "elf32-sh-fdpic" : "elf32-shbig-fdpic"); |
| 3379 | else |
| 3380 | return (!target_big_endian ? "elf32-shl" : "elf32-sh"); |
| 3381 | } |
| 3382 | #endif |
| 3383 | |
| 3384 | /* Apply fixup FIXP to SIZE-byte field BUF given that VAL is its |
| 3385 | assembly-time value. If we're generating a reloc for FIXP, |
| 3386 | see whether the addend should be stored in-place or whether |
| 3387 | it should be in an ELF r_addend field. */ |
| 3388 | |
| 3389 | static void |
| 3390 | apply_full_field_fix (fixS *fixP, char *buf, bfd_vma val, int size) |
| 3391 | { |
| 3392 | reloc_howto_type *howto; |
| 3393 | |
| 3394 | if (fixP->fx_addsy != NULL || fixP->fx_pcrel) |
| 3395 | { |
| 3396 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); |
| 3397 | if (howto && !howto->partial_inplace) |
| 3398 | { |
| 3399 | fixP->fx_addnumber = val; |
| 3400 | return; |
| 3401 | } |
| 3402 | } |
| 3403 | md_number_to_chars (buf, val, size); |
| 3404 | } |
| 3405 | |
| 3406 | /* Apply a fixup to the object file. */ |
| 3407 | |
| 3408 | void |
| 3409 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
| 3410 | { |
| 3411 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 3412 | int lowbyte = target_big_endian ? 1 : 0; |
| 3413 | int highbyte = target_big_endian ? 0 : 1; |
| 3414 | long val = (long) *valP; |
| 3415 | long max, min; |
| 3416 | int shift; |
| 3417 | |
| 3418 | /* A difference between two symbols, the second of which is in the |
| 3419 | current section, is transformed in a PC-relative relocation to |
| 3420 | the other symbol. We have to adjust the relocation type here. */ |
| 3421 | if (fixP->fx_pcrel) |
| 3422 | { |
| 3423 | switch (fixP->fx_r_type) |
| 3424 | { |
| 3425 | default: |
| 3426 | break; |
| 3427 | |
| 3428 | case BFD_RELOC_32: |
| 3429 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
| 3430 | break; |
| 3431 | |
| 3432 | /* Currently, we only support 32-bit PCREL relocations. |
| 3433 | We'd need a new reloc type to handle 16_PCREL, and |
| 3434 | 8_PCREL is already taken for R_SH_SWITCH8, which |
| 3435 | apparently does something completely different than what |
| 3436 | we need. FIXME. */ |
| 3437 | case BFD_RELOC_16: |
| 3438 | bfd_set_error (bfd_error_bad_value); |
| 3439 | return; |
| 3440 | |
| 3441 | case BFD_RELOC_8: |
| 3442 | bfd_set_error (bfd_error_bad_value); |
| 3443 | return; |
| 3444 | } |
| 3445 | } |
| 3446 | |
| 3447 | /* The function adjust_reloc_syms won't convert a reloc against a weak |
| 3448 | symbol into a reloc against a section, but bfd_install_relocation |
| 3449 | will screw up if the symbol is defined, so we have to adjust val here |
| 3450 | to avoid the screw up later. |
| 3451 | |
| 3452 | For ordinary relocs, this does not happen for ELF, since for ELF, |
| 3453 | bfd_install_relocation uses the "special function" field of the |
| 3454 | howto, and does not execute the code that needs to be undone, as long |
| 3455 | as the special function does not return bfd_reloc_continue. |
| 3456 | It can happen for GOT- and PLT-type relocs the way they are |
| 3457 | described in elf32-sh.c as they use bfd_elf_generic_reloc, but it |
| 3458 | doesn't matter here since those relocs don't use VAL; see below. */ |
| 3459 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour |
| 3460 | && fixP->fx_addsy != NULL |
| 3461 | && S_IS_WEAK (fixP->fx_addsy)) |
| 3462 | val -= S_GET_VALUE (fixP->fx_addsy); |
| 3463 | |
| 3464 | if (SWITCH_TABLE (fixP)) |
| 3465 | val -= S_GET_VALUE (fixP->fx_subsy); |
| 3466 | |
| 3467 | max = min = 0; |
| 3468 | shift = 0; |
| 3469 | switch (fixP->fx_r_type) |
| 3470 | { |
| 3471 | case BFD_RELOC_SH_IMM3: |
| 3472 | max = 0x7; |
| 3473 | * buf = (* buf & 0xf8) | (val & 0x7); |
| 3474 | break; |
| 3475 | case BFD_RELOC_SH_IMM3U: |
| 3476 | max = 0x7; |
| 3477 | * buf = (* buf & 0x8f) | ((val & 0x7) << 4); |
| 3478 | break; |
| 3479 | case BFD_RELOC_SH_DISP12: |
| 3480 | max = 0xfff; |
| 3481 | buf[lowbyte] = val & 0xff; |
| 3482 | buf[highbyte] |= (val >> 8) & 0x0f; |
| 3483 | break; |
| 3484 | case BFD_RELOC_SH_DISP12BY2: |
| 3485 | max = 0xfff; |
| 3486 | shift = 1; |
| 3487 | buf[lowbyte] = (val >> 1) & 0xff; |
| 3488 | buf[highbyte] |= (val >> 9) & 0x0f; |
| 3489 | break; |
| 3490 | case BFD_RELOC_SH_DISP12BY4: |
| 3491 | max = 0xfff; |
| 3492 | shift = 2; |
| 3493 | buf[lowbyte] = (val >> 2) & 0xff; |
| 3494 | buf[highbyte] |= (val >> 10) & 0x0f; |
| 3495 | break; |
| 3496 | case BFD_RELOC_SH_DISP12BY8: |
| 3497 | max = 0xfff; |
| 3498 | shift = 3; |
| 3499 | buf[lowbyte] = (val >> 3) & 0xff; |
| 3500 | buf[highbyte] |= (val >> 11) & 0x0f; |
| 3501 | break; |
| 3502 | case BFD_RELOC_SH_DISP20: |
| 3503 | if (! target_big_endian) |
| 3504 | abort(); |
| 3505 | max = 0x7ffff; |
| 3506 | min = -0x80000; |
| 3507 | buf[1] = (buf[1] & 0x0f) | ((val >> 12) & 0xf0); |
| 3508 | buf[2] = (val >> 8) & 0xff; |
| 3509 | buf[3] = val & 0xff; |
| 3510 | break; |
| 3511 | case BFD_RELOC_SH_DISP20BY8: |
| 3512 | if (!target_big_endian) |
| 3513 | abort(); |
| 3514 | max = 0x7ffff; |
| 3515 | min = -0x80000; |
| 3516 | shift = 8; |
| 3517 | buf[1] = (buf[1] & 0x0f) | ((val >> 20) & 0xf0); |
| 3518 | buf[2] = (val >> 16) & 0xff; |
| 3519 | buf[3] = (val >> 8) & 0xff; |
| 3520 | break; |
| 3521 | |
| 3522 | case BFD_RELOC_SH_IMM4: |
| 3523 | max = 0xf; |
| 3524 | *buf = (*buf & 0xf0) | (val & 0xf); |
| 3525 | break; |
| 3526 | |
| 3527 | case BFD_RELOC_SH_IMM4BY2: |
| 3528 | max = 0xf; |
| 3529 | shift = 1; |
| 3530 | *buf = (*buf & 0xf0) | ((val >> 1) & 0xf); |
| 3531 | break; |
| 3532 | |
| 3533 | case BFD_RELOC_SH_IMM4BY4: |
| 3534 | max = 0xf; |
| 3535 | shift = 2; |
| 3536 | *buf = (*buf & 0xf0) | ((val >> 2) & 0xf); |
| 3537 | break; |
| 3538 | |
| 3539 | case BFD_RELOC_SH_IMM8BY2: |
| 3540 | max = 0xff; |
| 3541 | shift = 1; |
| 3542 | *buf = val >> 1; |
| 3543 | break; |
| 3544 | |
| 3545 | case BFD_RELOC_SH_IMM8BY4: |
| 3546 | max = 0xff; |
| 3547 | shift = 2; |
| 3548 | *buf = val >> 2; |
| 3549 | break; |
| 3550 | |
| 3551 | case BFD_RELOC_8: |
| 3552 | case BFD_RELOC_SH_IMM8: |
| 3553 | /* Sometimes the 8 bit value is sign extended (e.g., add) and |
| 3554 | sometimes it is not (e.g., and). We permit any 8 bit value. |
| 3555 | Note that adding further restrictions may invalidate |
| 3556 | reasonable looking assembly code, such as ``and -0x1,r0''. */ |
| 3557 | max = 0xff; |
| 3558 | min = -0xff; |
| 3559 | *buf++ = val; |
| 3560 | break; |
| 3561 | |
| 3562 | case BFD_RELOC_SH_PCRELIMM8BY4: |
| 3563 | /* If we are dealing with a known destination ... */ |
| 3564 | if ((fixP->fx_addsy == NULL || S_IS_DEFINED (fixP->fx_addsy)) |
| 3565 | && (fixP->fx_subsy == NULL || S_IS_DEFINED (fixP->fx_addsy))) |
| 3566 | { |
| 3567 | /* Don't silently move the destination due to misalignment. |
| 3568 | The absolute address is the fragment base plus the offset into |
| 3569 | the fragment plus the pc relative offset to the label. */ |
| 3570 | if ((fixP->fx_frag->fr_address + fixP->fx_where + val) & 3) |
| 3571 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 3572 | _("offset to unaligned destination")); |
| 3573 | |
| 3574 | /* The displacement cannot be zero or backward even if aligned. |
| 3575 | Allow -2 because val has already been adjusted somewhere. */ |
| 3576 | if (val < -2) |
| 3577 | as_bad_where (fixP->fx_file, fixP->fx_line, _("negative offset")); |
| 3578 | } |
| 3579 | |
| 3580 | /* The lower two bits of the PC are cleared before the |
| 3581 | displacement is added in. We can assume that the destination |
| 3582 | is on a 4 byte boundary. If this instruction is also on a 4 |
| 3583 | byte boundary, then we want |
| 3584 | (target - here) / 4 |
| 3585 | and target - here is a multiple of 4. |
| 3586 | Otherwise, we are on a 2 byte boundary, and we want |
| 3587 | (target - (here - 2)) / 4 |
| 3588 | and target - here is not a multiple of 4. Computing |
| 3589 | (target - (here - 2)) / 4 == (target - here + 2) / 4 |
| 3590 | works for both cases, since in the first case the addition of |
| 3591 | 2 will be removed by the division. target - here is in the |
| 3592 | variable val. */ |
| 3593 | val = (val + 2) / 4; |
| 3594 | if (val & ~0xff) |
| 3595 | as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); |
| 3596 | buf[lowbyte] = val; |
| 3597 | break; |
| 3598 | |
| 3599 | case BFD_RELOC_SH_PCRELIMM8BY2: |
| 3600 | val /= 2; |
| 3601 | if (val & ~0xff) |
| 3602 | as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); |
| 3603 | buf[lowbyte] = val; |
| 3604 | break; |
| 3605 | |
| 3606 | case BFD_RELOC_SH_PCDISP8BY2: |
| 3607 | val /= 2; |
| 3608 | if (val < -0x80 || val > 0x7f) |
| 3609 | as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); |
| 3610 | buf[lowbyte] = val; |
| 3611 | break; |
| 3612 | |
| 3613 | case BFD_RELOC_SH_PCDISP12BY2: |
| 3614 | val /= 2; |
| 3615 | if (val < -0x800 || val > 0x7ff) |
| 3616 | as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); |
| 3617 | buf[lowbyte] = val & 0xff; |
| 3618 | buf[highbyte] |= (val >> 8) & 0xf; |
| 3619 | break; |
| 3620 | |
| 3621 | case BFD_RELOC_32: |
| 3622 | case BFD_RELOC_32_PCREL: |
| 3623 | apply_full_field_fix (fixP, buf, val, 4); |
| 3624 | break; |
| 3625 | |
| 3626 | case BFD_RELOC_16: |
| 3627 | apply_full_field_fix (fixP, buf, val, 2); |
| 3628 | break; |
| 3629 | |
| 3630 | case BFD_RELOC_SH_USES: |
| 3631 | /* Pass the value into sh_reloc(). */ |
| 3632 | fixP->fx_addnumber = val; |
| 3633 | break; |
| 3634 | |
| 3635 | case BFD_RELOC_SH_COUNT: |
| 3636 | case BFD_RELOC_SH_ALIGN: |
| 3637 | case BFD_RELOC_SH_CODE: |
| 3638 | case BFD_RELOC_SH_DATA: |
| 3639 | case BFD_RELOC_SH_LABEL: |
| 3640 | /* Nothing to do here. */ |
| 3641 | break; |
| 3642 | |
| 3643 | case BFD_RELOC_SH_LOOP_START: |
| 3644 | case BFD_RELOC_SH_LOOP_END: |
| 3645 | |
| 3646 | case BFD_RELOC_VTABLE_INHERIT: |
| 3647 | case BFD_RELOC_VTABLE_ENTRY: |
| 3648 | fixP->fx_done = 0; |
| 3649 | return; |
| 3650 | |
| 3651 | #ifdef OBJ_ELF |
| 3652 | case BFD_RELOC_32_PLT_PCREL: |
| 3653 | /* Make the jump instruction point to the address of the operand. At |
| 3654 | runtime we merely add the offset to the actual PLT entry. */ |
| 3655 | * valP = 0xfffffffc; |
| 3656 | val = fixP->fx_offset; |
| 3657 | if (fixP->fx_subsy) |
| 3658 | val -= S_GET_VALUE (fixP->fx_subsy); |
| 3659 | apply_full_field_fix (fixP, buf, val, 4); |
| 3660 | break; |
| 3661 | |
| 3662 | case BFD_RELOC_SH_GOTPC: |
| 3663 | /* This is tough to explain. We end up with this one if we have |
| 3664 | operands that look like "_GLOBAL_OFFSET_TABLE_+[.-.L284]". |
| 3665 | The goal here is to obtain the absolute address of the GOT, |
| 3666 | and it is strongly preferable from a performance point of |
| 3667 | view to avoid using a runtime relocation for this. There are |
| 3668 | cases where you have something like: |
| 3669 | |
| 3670 | .long _GLOBAL_OFFSET_TABLE_+[.-.L66] |
| 3671 | |
| 3672 | and here no correction would be required. Internally in the |
| 3673 | assembler we treat operands of this form as not being pcrel |
| 3674 | since the '.' is explicitly mentioned, and I wonder whether |
| 3675 | it would simplify matters to do it this way. Who knows. In |
| 3676 | earlier versions of the PIC patches, the pcrel_adjust field |
| 3677 | was used to store the correction, but since the expression is |
| 3678 | not pcrel, I felt it would be confusing to do it this way. */ |
| 3679 | * valP -= 1; |
| 3680 | apply_full_field_fix (fixP, buf, val, 4); |
| 3681 | break; |
| 3682 | |
| 3683 | case BFD_RELOC_SH_TLS_GD_32: |
| 3684 | case BFD_RELOC_SH_TLS_LD_32: |
| 3685 | case BFD_RELOC_SH_TLS_IE_32: |
| 3686 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 3687 | /* Fallthrough */ |
| 3688 | case BFD_RELOC_32_GOT_PCREL: |
| 3689 | case BFD_RELOC_SH_GOT20: |
| 3690 | case BFD_RELOC_SH_GOTPLT32: |
| 3691 | case BFD_RELOC_SH_GOTFUNCDESC: |
| 3692 | case BFD_RELOC_SH_GOTFUNCDESC20: |
| 3693 | case BFD_RELOC_SH_GOTOFFFUNCDESC: |
| 3694 | case BFD_RELOC_SH_GOTOFFFUNCDESC20: |
| 3695 | case BFD_RELOC_SH_FUNCDESC: |
| 3696 | * valP = 0; /* Fully resolved at runtime. No addend. */ |
| 3697 | apply_full_field_fix (fixP, buf, 0, 4); |
| 3698 | break; |
| 3699 | |
| 3700 | case BFD_RELOC_SH_TLS_LDO_32: |
| 3701 | case BFD_RELOC_SH_TLS_LE_32: |
| 3702 | S_SET_THREAD_LOCAL (fixP->fx_addsy); |
| 3703 | /* Fallthrough */ |
| 3704 | case BFD_RELOC_32_GOTOFF: |
| 3705 | case BFD_RELOC_SH_GOTOFF20: |
| 3706 | apply_full_field_fix (fixP, buf, val, 4); |
| 3707 | break; |
| 3708 | #endif |
| 3709 | |
| 3710 | default: |
| 3711 | abort (); |
| 3712 | } |
| 3713 | |
| 3714 | if (shift != 0) |
| 3715 | { |
| 3716 | if ((val & ((1 << shift) - 1)) != 0) |
| 3717 | as_bad_where (fixP->fx_file, fixP->fx_line, _("misaligned offset")); |
| 3718 | if (val >= 0) |
| 3719 | val >>= shift; |
| 3720 | else |
| 3721 | val = ((val >> shift) |
| 3722 | | ((long) -1 & ~ ((long) -1 >> shift))); |
| 3723 | } |
| 3724 | |
| 3725 | /* Extend sign for 64-bit host. */ |
| 3726 | val = ((val & 0xffffffff) ^ 0x80000000) - 0x80000000; |
| 3727 | if (max != 0 && (val < min || val > max)) |
| 3728 | as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range")); |
| 3729 | else if (max != 0) |
| 3730 | /* Stop the generic code from trying to overflow check the value as well. |
| 3731 | It may not have the correct value anyway, as we do not store val back |
| 3732 | into *valP. */ |
| 3733 | fixP->fx_no_overflow = 1; |
| 3734 | |
| 3735 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) |
| 3736 | fixP->fx_done = 1; |
| 3737 | } |
| 3738 | |
| 3739 | /* Called just before address relaxation. Return the length |
| 3740 | by which a fragment must grow to reach it's destination. */ |
| 3741 | |
| 3742 | int |
| 3743 | md_estimate_size_before_relax (fragS *fragP, segT segment_type) |
| 3744 | { |
| 3745 | int what; |
| 3746 | |
| 3747 | switch (fragP->fr_subtype) |
| 3748 | { |
| 3749 | default: |
| 3750 | abort (); |
| 3751 | |
| 3752 | case C (UNCOND_JUMP, UNDEF_DISP): |
| 3753 | /* Used to be a branch to somewhere which was unknown. */ |
| 3754 | if (!fragP->fr_symbol) |
| 3755 | { |
| 3756 | fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12); |
| 3757 | } |
| 3758 | else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type) |
| 3759 | { |
| 3760 | fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12); |
| 3761 | } |
| 3762 | else |
| 3763 | { |
| 3764 | fragP->fr_subtype = C (UNCOND_JUMP, UNDEF_WORD_DISP); |
| 3765 | } |
| 3766 | break; |
| 3767 | |
| 3768 | case C (COND_JUMP, UNDEF_DISP): |
| 3769 | case C (COND_JUMP_DELAY, UNDEF_DISP): |
| 3770 | what = GET_WHAT (fragP->fr_subtype); |
| 3771 | /* Used to be a branch to somewhere which was unknown. */ |
| 3772 | if (fragP->fr_symbol |
| 3773 | && S_GET_SEGMENT (fragP->fr_symbol) == segment_type) |
| 3774 | { |
| 3775 | /* Got a symbol and it's defined in this segment, become byte |
| 3776 | sized - maybe it will fix up. */ |
| 3777 | fragP->fr_subtype = C (what, COND8); |
| 3778 | } |
| 3779 | else if (fragP->fr_symbol) |
| 3780 | { |
| 3781 | /* It's got a segment, but it's not ours, so it will always be long. */ |
| 3782 | fragP->fr_subtype = C (what, UNDEF_WORD_DISP); |
| 3783 | } |
| 3784 | else |
| 3785 | { |
| 3786 | /* We know the abs value. */ |
| 3787 | fragP->fr_subtype = C (what, COND8); |
| 3788 | } |
| 3789 | break; |
| 3790 | |
| 3791 | case C (UNCOND_JUMP, UNCOND12): |
| 3792 | case C (UNCOND_JUMP, UNCOND32): |
| 3793 | case C (UNCOND_JUMP, UNDEF_WORD_DISP): |
| 3794 | case C (COND_JUMP, COND8): |
| 3795 | case C (COND_JUMP, COND12): |
| 3796 | case C (COND_JUMP, COND32): |
| 3797 | case C (COND_JUMP, UNDEF_WORD_DISP): |
| 3798 | case C (COND_JUMP_DELAY, COND8): |
| 3799 | case C (COND_JUMP_DELAY, COND12): |
| 3800 | case C (COND_JUMP_DELAY, COND32): |
| 3801 | case C (COND_JUMP_DELAY, UNDEF_WORD_DISP): |
| 3802 | /* When relaxing a section for the second time, we don't need to |
| 3803 | do anything besides return the current size. */ |
| 3804 | break; |
| 3805 | } |
| 3806 | |
| 3807 | fragP->fr_var = md_relax_table[fragP->fr_subtype].rlx_length; |
| 3808 | return fragP->fr_var; |
| 3809 | } |
| 3810 | |
| 3811 | /* Put number into target byte order. */ |
| 3812 | |
| 3813 | void |
| 3814 | md_number_to_chars (char *ptr, valueT use, int nbytes) |
| 3815 | { |
| 3816 | if (! target_big_endian) |
| 3817 | number_to_chars_littleendian (ptr, use, nbytes); |
| 3818 | else |
| 3819 | number_to_chars_bigendian (ptr, use, nbytes); |
| 3820 | } |
| 3821 | |
| 3822 | /* This version is used in obj-coff.c eg. for the sh-hms target. */ |
| 3823 | |
| 3824 | long |
| 3825 | md_pcrel_from (fixS *fixP) |
| 3826 | { |
| 3827 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address + 2; |
| 3828 | } |
| 3829 | |
| 3830 | long |
| 3831 | md_pcrel_from_section (fixS *fixP, segT sec) |
| 3832 | { |
| 3833 | if (! sh_local_pcrel (fixP) |
| 3834 | && fixP->fx_addsy != (symbolS *) NULL |
| 3835 | && (generic_force_reloc (fixP) |
| 3836 | || S_GET_SEGMENT (fixP->fx_addsy) != sec)) |
| 3837 | { |
| 3838 | /* The symbol is undefined (or is defined but not in this section, |
| 3839 | or we're not sure about it being the final definition). Let the |
| 3840 | linker figure it out. We need to adjust the subtraction of a |
| 3841 | symbol to the position of the relocated data, though. */ |
| 3842 | return fixP->fx_subsy ? fixP->fx_where + fixP->fx_frag->fr_address : 0; |
| 3843 | } |
| 3844 | |
| 3845 | return md_pcrel_from (fixP); |
| 3846 | } |
| 3847 | |
| 3848 | /* Create a reloc. */ |
| 3849 | |
| 3850 | arelent * |
| 3851 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
| 3852 | { |
| 3853 | arelent *rel; |
| 3854 | bfd_reloc_code_real_type r_type; |
| 3855 | |
| 3856 | rel = XNEW (arelent); |
| 3857 | rel->sym_ptr_ptr = XNEW (asymbol *); |
| 3858 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 3859 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 3860 | |
| 3861 | r_type = fixp->fx_r_type; |
| 3862 | |
| 3863 | if (SWITCH_TABLE (fixp)) |
| 3864 | { |
| 3865 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); |
| 3866 | rel->addend = rel->address - S_GET_VALUE(fixp->fx_subsy); |
| 3867 | if (r_type == BFD_RELOC_16) |
| 3868 | r_type = BFD_RELOC_SH_SWITCH16; |
| 3869 | else if (r_type == BFD_RELOC_8) |
| 3870 | r_type = BFD_RELOC_8_PCREL; |
| 3871 | else if (r_type == BFD_RELOC_32) |
| 3872 | r_type = BFD_RELOC_SH_SWITCH32; |
| 3873 | else |
| 3874 | abort (); |
| 3875 | } |
| 3876 | else if (r_type == BFD_RELOC_SH_USES) |
| 3877 | rel->addend = fixp->fx_addnumber; |
| 3878 | else if (r_type == BFD_RELOC_SH_COUNT) |
| 3879 | rel->addend = fixp->fx_offset; |
| 3880 | else if (r_type == BFD_RELOC_SH_ALIGN) |
| 3881 | rel->addend = fixp->fx_offset; |
| 3882 | else if (r_type == BFD_RELOC_VTABLE_INHERIT |
| 3883 | || r_type == BFD_RELOC_VTABLE_ENTRY) |
| 3884 | rel->addend = fixp->fx_offset; |
| 3885 | else if (r_type == BFD_RELOC_SH_LOOP_START |
| 3886 | || r_type == BFD_RELOC_SH_LOOP_END) |
| 3887 | rel->addend = fixp->fx_offset; |
| 3888 | else if (r_type == BFD_RELOC_SH_LABEL && fixp->fx_pcrel) |
| 3889 | { |
| 3890 | rel->addend = 0; |
| 3891 | rel->address = rel->addend = fixp->fx_offset; |
| 3892 | } |
| 3893 | else |
| 3894 | rel->addend = fixp->fx_addnumber; |
| 3895 | |
| 3896 | rel->howto = bfd_reloc_type_lookup (stdoutput, r_type); |
| 3897 | |
| 3898 | if (rel->howto == NULL) |
| 3899 | { |
| 3900 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 3901 | _("Cannot represent relocation type %s"), |
| 3902 | bfd_get_reloc_code_name (r_type)); |
| 3903 | /* Set howto to a garbage value so that we can keep going. */ |
| 3904 | rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); |
| 3905 | gas_assert (rel->howto != NULL); |
| 3906 | } |
| 3907 | #ifdef OBJ_ELF |
| 3908 | else if (rel->howto->type == R_SH_IND12W) |
| 3909 | rel->addend += fixp->fx_offset - 4; |
| 3910 | #endif |
| 3911 | |
| 3912 | return rel; |
| 3913 | } |
| 3914 | |
| 3915 | #ifdef OBJ_ELF |
| 3916 | inline static char * |
| 3917 | sh_end_of_match (char *cont, const char *what) |
| 3918 | { |
| 3919 | int len = strlen (what); |
| 3920 | |
| 3921 | if (strncasecmp (cont, what, strlen (what)) == 0 |
| 3922 | && ! is_part_of_name (cont[len])) |
| 3923 | return cont + len; |
| 3924 | |
| 3925 | return NULL; |
| 3926 | } |
| 3927 | |
| 3928 | int |
| 3929 | sh_parse_name (char const *name, |
| 3930 | expressionS *exprP, |
| 3931 | enum expr_mode mode, |
| 3932 | char *nextcharP) |
| 3933 | { |
| 3934 | char *next = input_line_pointer; |
| 3935 | char *next_end; |
| 3936 | int reloc_type; |
| 3937 | segT segment; |
| 3938 | |
| 3939 | exprP->X_op_symbol = NULL; |
| 3940 | |
| 3941 | if (strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0) |
| 3942 | { |
| 3943 | if (! GOT_symbol) |
| 3944 | GOT_symbol = symbol_find_or_make (name); |
| 3945 | |
| 3946 | exprP->X_add_symbol = GOT_symbol; |
| 3947 | no_suffix: |
| 3948 | /* If we have an absolute symbol or a reg, then we know its |
| 3949 | value now. */ |
| 3950 | segment = S_GET_SEGMENT (exprP->X_add_symbol); |
| 3951 | if (mode != expr_defer && segment == absolute_section) |
| 3952 | { |
| 3953 | exprP->X_op = O_constant; |
| 3954 | exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol); |
| 3955 | exprP->X_add_symbol = NULL; |
| 3956 | } |
| 3957 | else if (mode != expr_defer && segment == reg_section) |
| 3958 | { |
| 3959 | exprP->X_op = O_register; |
| 3960 | exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol); |
| 3961 | exprP->X_add_symbol = NULL; |
| 3962 | } |
| 3963 | else |
| 3964 | { |
| 3965 | exprP->X_op = O_symbol; |
| 3966 | exprP->X_add_number = 0; |
| 3967 | } |
| 3968 | |
| 3969 | return 1; |
| 3970 | } |
| 3971 | |
| 3972 | exprP->X_add_symbol = symbol_find_or_make (name); |
| 3973 | |
| 3974 | if (*nextcharP != '@') |
| 3975 | goto no_suffix; |
| 3976 | else if ((next_end = sh_end_of_match (next + 1, "GOTOFF"))) |
| 3977 | reloc_type = BFD_RELOC_32_GOTOFF; |
| 3978 | else if ((next_end = sh_end_of_match (next + 1, "GOTPLT"))) |
| 3979 | reloc_type = BFD_RELOC_SH_GOTPLT32; |
| 3980 | else if ((next_end = sh_end_of_match (next + 1, "GOT"))) |
| 3981 | reloc_type = BFD_RELOC_32_GOT_PCREL; |
| 3982 | else if ((next_end = sh_end_of_match (next + 1, "PLT"))) |
| 3983 | reloc_type = BFD_RELOC_32_PLT_PCREL; |
| 3984 | else if ((next_end = sh_end_of_match (next + 1, "TLSGD"))) |
| 3985 | reloc_type = BFD_RELOC_SH_TLS_GD_32; |
| 3986 | else if ((next_end = sh_end_of_match (next + 1, "TLSLDM"))) |
| 3987 | reloc_type = BFD_RELOC_SH_TLS_LD_32; |
| 3988 | else if ((next_end = sh_end_of_match (next + 1, "GOTTPOFF"))) |
| 3989 | reloc_type = BFD_RELOC_SH_TLS_IE_32; |
| 3990 | else if ((next_end = sh_end_of_match (next + 1, "TPOFF"))) |
| 3991 | reloc_type = BFD_RELOC_SH_TLS_LE_32; |
| 3992 | else if ((next_end = sh_end_of_match (next + 1, "DTPOFF"))) |
| 3993 | reloc_type = BFD_RELOC_SH_TLS_LDO_32; |
| 3994 | else if ((next_end = sh_end_of_match (next + 1, "PCREL"))) |
| 3995 | reloc_type = BFD_RELOC_32_PCREL; |
| 3996 | else if ((next_end = sh_end_of_match (next + 1, "GOTFUNCDESC"))) |
| 3997 | reloc_type = BFD_RELOC_SH_GOTFUNCDESC; |
| 3998 | else if ((next_end = sh_end_of_match (next + 1, "GOTOFFFUNCDESC"))) |
| 3999 | reloc_type = BFD_RELOC_SH_GOTOFFFUNCDESC; |
| 4000 | else if ((next_end = sh_end_of_match (next + 1, "FUNCDESC"))) |
| 4001 | reloc_type = BFD_RELOC_SH_FUNCDESC; |
| 4002 | else |
| 4003 | goto no_suffix; |
| 4004 | |
| 4005 | *input_line_pointer = *nextcharP; |
| 4006 | input_line_pointer = next_end; |
| 4007 | *nextcharP = *input_line_pointer; |
| 4008 | *input_line_pointer = '\0'; |
| 4009 | |
| 4010 | exprP->X_op = O_PIC_reloc; |
| 4011 | exprP->X_add_number = 0; |
| 4012 | exprP->X_md = reloc_type; |
| 4013 | |
| 4014 | return 1; |
| 4015 | } |
| 4016 | |
| 4017 | void |
| 4018 | sh_cfi_frame_initial_instructions (void) |
| 4019 | { |
| 4020 | cfi_add_CFA_def_cfa (15, 0); |
| 4021 | } |
| 4022 | |
| 4023 | int |
| 4024 | sh_regname_to_dw2regnum (char *regname) |
| 4025 | { |
| 4026 | unsigned int regnum = -1; |
| 4027 | unsigned int i; |
| 4028 | const char *p; |
| 4029 | char *q; |
| 4030 | static struct { const char *name; int dw2regnum; } regnames[] = |
| 4031 | { |
| 4032 | { "pr", 17 }, { "t", 18 }, { "gbr", 19 }, { "mach", 20 }, |
| 4033 | { "macl", 21 }, { "fpul", 23 } |
| 4034 | }; |
| 4035 | |
| 4036 | for (i = 0; i < ARRAY_SIZE (regnames); ++i) |
| 4037 | if (strcmp (regnames[i].name, regname) == 0) |
| 4038 | return regnames[i].dw2regnum; |
| 4039 | |
| 4040 | if (regname[0] == 'r') |
| 4041 | { |
| 4042 | p = regname + 1; |
| 4043 | regnum = strtoul (p, &q, 10); |
| 4044 | if (p == q || *q || regnum >= 16) |
| 4045 | return -1; |
| 4046 | } |
| 4047 | else if (regname[0] == 'f' && regname[1] == 'r') |
| 4048 | { |
| 4049 | p = regname + 2; |
| 4050 | regnum = strtoul (p, &q, 10); |
| 4051 | if (p == q || *q || regnum >= 16) |
| 4052 | return -1; |
| 4053 | regnum += 25; |
| 4054 | } |
| 4055 | else if (regname[0] == 'x' && regname[1] == 'd') |
| 4056 | { |
| 4057 | p = regname + 2; |
| 4058 | regnum = strtoul (p, &q, 10); |
| 4059 | if (p == q || *q || regnum >= 8) |
| 4060 | return -1; |
| 4061 | regnum += 87; |
| 4062 | } |
| 4063 | return regnum; |
| 4064 | } |
| 4065 | #endif /* OBJ_ELF */ |