| 1 | /* tc-bfin.c -- Assembler for the ADI Blackfin. |
| 2 | Copyright 2005 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GAS, the GNU Assembler. |
| 6 | |
| 7 | GAS is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GAS; see the file COPYING. If not, write to the Free |
| 19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | #include "as.h" |
| 23 | #include "struc-symbol.h" |
| 24 | #include "obj-elf.h" |
| 25 | #include "bfin-defs.h" |
| 26 | #include "obstack.h" |
| 27 | #include "safe-ctype.h" |
| 28 | #ifdef OBJ_ELF |
| 29 | #include "dwarf2dbg.h" |
| 30 | #endif |
| 31 | #include "libbfd.h" |
| 32 | #include "elf/common.h" |
| 33 | #include "elf/bfin.h" |
| 34 | |
| 35 | extern int yyparse (void); |
| 36 | struct yy_buffer_state; |
| 37 | typedef struct yy_buffer_state *YY_BUFFER_STATE; |
| 38 | extern YY_BUFFER_STATE yy_scan_string (const char *yy_str); |
| 39 | extern void yy_delete_buffer (YY_BUFFER_STATE b); |
| 40 | static parse_state parse (char *line); |
| 41 | static void bfin_s_bss PARAMS ((int)); |
| 42 | static int md_chars_to_number PARAMS ((char *, int)); |
| 43 | |
| 44 | /* Global variables. */ |
| 45 | struct bfin_insn *insn; |
| 46 | int last_insn_size; |
| 47 | |
| 48 | extern struct obstack mempool; |
| 49 | FILE *errorf; |
| 50 | |
| 51 | /* Flags to set in the elf header */ |
| 52 | #define DEFAULT_FLAGS 0 |
| 53 | |
| 54 | static flagword bfin_flags = DEFAULT_FLAGS; |
| 55 | static const char *bfin_pic_flag = (const char *)0; |
| 56 | |
| 57 | /* Registers list. */ |
| 58 | struct bfin_reg_entry |
| 59 | { |
| 60 | const char *name; |
| 61 | int number; |
| 62 | }; |
| 63 | |
| 64 | static const struct bfin_reg_entry bfin_reg_info[] = { |
| 65 | {"R0.L", REG_RL0}, |
| 66 | {"R1.L", REG_RL1}, |
| 67 | {"R2.L", REG_RL2}, |
| 68 | {"R3.L", REG_RL3}, |
| 69 | {"R4.L", REG_RL4}, |
| 70 | {"R5.L", REG_RL5}, |
| 71 | {"R6.L", REG_RL6}, |
| 72 | {"R7.L", REG_RL7}, |
| 73 | {"R0.H", REG_RH0}, |
| 74 | {"R1.H", REG_RH1}, |
| 75 | {"R2.H", REG_RH2}, |
| 76 | {"R3.H", REG_RH3}, |
| 77 | {"R4.H", REG_RH4}, |
| 78 | {"R5.H", REG_RH5}, |
| 79 | {"R6.H", REG_RH6}, |
| 80 | {"R7.H", REG_RH7}, |
| 81 | {"R0", REG_R0}, |
| 82 | {"R1", REG_R1}, |
| 83 | {"R2", REG_R2}, |
| 84 | {"R3", REG_R3}, |
| 85 | {"R4", REG_R4}, |
| 86 | {"R5", REG_R5}, |
| 87 | {"R6", REG_R6}, |
| 88 | {"R7", REG_R7}, |
| 89 | {"P0", REG_P0}, |
| 90 | {"P0.H", REG_P0}, |
| 91 | {"P0.L", REG_P0}, |
| 92 | {"P1", REG_P1}, |
| 93 | {"P1.H", REG_P1}, |
| 94 | {"P1.L", REG_P1}, |
| 95 | {"P2", REG_P2}, |
| 96 | {"P2.H", REG_P2}, |
| 97 | {"P2.L", REG_P2}, |
| 98 | {"P3", REG_P3}, |
| 99 | {"P3.H", REG_P3}, |
| 100 | {"P3.L", REG_P3}, |
| 101 | {"P4", REG_P4}, |
| 102 | {"P4.H", REG_P4}, |
| 103 | {"P4.L", REG_P4}, |
| 104 | {"P5", REG_P5}, |
| 105 | {"P5.H", REG_P5}, |
| 106 | {"P5.L", REG_P5}, |
| 107 | {"SP", REG_SP}, |
| 108 | {"SP.L", REG_SP}, |
| 109 | {"SP.H", REG_SP}, |
| 110 | {"FP", REG_FP}, |
| 111 | {"FP.L", REG_FP}, |
| 112 | {"FP.H", REG_FP}, |
| 113 | {"A0x", REG_A0x}, |
| 114 | {"A1x", REG_A1x}, |
| 115 | {"A0w", REG_A0w}, |
| 116 | {"A1w", REG_A1w}, |
| 117 | {"A0.x", REG_A0x}, |
| 118 | {"A1.x", REG_A1x}, |
| 119 | {"A0.w", REG_A0w}, |
| 120 | {"A1.w", REG_A1w}, |
| 121 | {"A0", REG_A0}, |
| 122 | {"A0.L", REG_A0}, |
| 123 | {"A0.H", REG_A0}, |
| 124 | {"A1", REG_A1}, |
| 125 | {"A1.L", REG_A1}, |
| 126 | {"A1.H", REG_A1}, |
| 127 | {"I0", REG_I0}, |
| 128 | {"I0.L", REG_I0}, |
| 129 | {"I0.H", REG_I0}, |
| 130 | {"I1", REG_I1}, |
| 131 | {"I1.L", REG_I1}, |
| 132 | {"I1.H", REG_I1}, |
| 133 | {"I2", REG_I2}, |
| 134 | {"I2.L", REG_I2}, |
| 135 | {"I2.H", REG_I2}, |
| 136 | {"I3", REG_I3}, |
| 137 | {"I3.L", REG_I3}, |
| 138 | {"I3.H", REG_I3}, |
| 139 | {"M0", REG_M0}, |
| 140 | {"M0.H", REG_M0}, |
| 141 | {"M0.L", REG_M0}, |
| 142 | {"M1", REG_M1}, |
| 143 | {"M1.H", REG_M1}, |
| 144 | {"M1.L", REG_M1}, |
| 145 | {"M2", REG_M2}, |
| 146 | {"M2.H", REG_M2}, |
| 147 | {"M2.L", REG_M2}, |
| 148 | {"M3", REG_M3}, |
| 149 | {"M3.H", REG_M3}, |
| 150 | {"M3.L", REG_M3}, |
| 151 | {"B0", REG_B0}, |
| 152 | {"B0.H", REG_B0}, |
| 153 | {"B0.L", REG_B0}, |
| 154 | {"B1", REG_B1}, |
| 155 | {"B1.H", REG_B1}, |
| 156 | {"B1.L", REG_B1}, |
| 157 | {"B2", REG_B2}, |
| 158 | {"B2.H", REG_B2}, |
| 159 | {"B2.L", REG_B2}, |
| 160 | {"B3", REG_B3}, |
| 161 | {"B3.H", REG_B3}, |
| 162 | {"B3.L", REG_B3}, |
| 163 | {"L0", REG_L0}, |
| 164 | {"L0.H", REG_L0}, |
| 165 | {"L0.L", REG_L0}, |
| 166 | {"L1", REG_L1}, |
| 167 | {"L1.H", REG_L1}, |
| 168 | {"L1.L", REG_L1}, |
| 169 | {"L2", REG_L2}, |
| 170 | {"L2.H", REG_L2}, |
| 171 | {"L2.L", REG_L2}, |
| 172 | {"L3", REG_L3}, |
| 173 | {"L3.H", REG_L3}, |
| 174 | {"L3.L", REG_L3}, |
| 175 | {"AZ", S_AZ}, |
| 176 | {"AN", S_AN}, |
| 177 | {"AC0", S_AC0}, |
| 178 | {"AC1", S_AC1}, |
| 179 | {"AV0", S_AV0}, |
| 180 | {"AV0S", S_AV0S}, |
| 181 | {"AV1", S_AV1}, |
| 182 | {"AV1S", S_AV1S}, |
| 183 | {"AQ", S_AQ}, |
| 184 | {"V", S_V}, |
| 185 | {"VS", S_VS}, |
| 186 | {"sftreset", REG_sftreset}, |
| 187 | {"omode", REG_omode}, |
| 188 | {"excause", REG_excause}, |
| 189 | {"emucause", REG_emucause}, |
| 190 | {"idle_req", REG_idle_req}, |
| 191 | {"hwerrcause", REG_hwerrcause}, |
| 192 | {"CC", REG_CC}, |
| 193 | {"LC0", REG_LC0}, |
| 194 | {"LC1", REG_LC1}, |
| 195 | {"ASTAT", REG_ASTAT}, |
| 196 | {"RETS", REG_RETS}, |
| 197 | {"LT0", REG_LT0}, |
| 198 | {"LB0", REG_LB0}, |
| 199 | {"LT1", REG_LT1}, |
| 200 | {"LB1", REG_LB1}, |
| 201 | {"CYCLES", REG_CYCLES}, |
| 202 | {"CYCLES2", REG_CYCLES2}, |
| 203 | {"USP", REG_USP}, |
| 204 | {"SEQSTAT", REG_SEQSTAT}, |
| 205 | {"SYSCFG", REG_SYSCFG}, |
| 206 | {"RETI", REG_RETI}, |
| 207 | {"RETX", REG_RETX}, |
| 208 | {"RETN", REG_RETN}, |
| 209 | {"RETE", REG_RETE}, |
| 210 | {"EMUDAT", REG_EMUDAT}, |
| 211 | {0, 0} |
| 212 | }; |
| 213 | |
| 214 | /* Blackfin specific function to handle FD-PIC pointer initializations. */ |
| 215 | |
| 216 | static void |
| 217 | bfin_pic_ptr (int nbytes) |
| 218 | { |
| 219 | expressionS exp; |
| 220 | char *p; |
| 221 | |
| 222 | if (nbytes != 4) |
| 223 | abort (); |
| 224 | |
| 225 | #ifdef md_flush_pending_output |
| 226 | md_flush_pending_output (); |
| 227 | #endif |
| 228 | |
| 229 | if (is_it_end_of_statement ()) |
| 230 | { |
| 231 | demand_empty_rest_of_line (); |
| 232 | return; |
| 233 | } |
| 234 | |
| 235 | #ifdef md_cons_align |
| 236 | md_cons_align (nbytes); |
| 237 | #endif |
| 238 | |
| 239 | do |
| 240 | { |
| 241 | bfd_reloc_code_real_type reloc_type = BFD_RELOC_BFIN_FUNCDESC; |
| 242 | |
| 243 | if (strncasecmp (input_line_pointer, "funcdesc(", 9) == 0) |
| 244 | { |
| 245 | input_line_pointer += 9; |
| 246 | expression (&exp); |
| 247 | if (*input_line_pointer == ')') |
| 248 | input_line_pointer++; |
| 249 | else |
| 250 | as_bad ("missing ')'"); |
| 251 | } |
| 252 | else |
| 253 | error ("missing funcdesc in picptr"); |
| 254 | |
| 255 | p = frag_more (4); |
| 256 | memset (p, 0, 4); |
| 257 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &exp, 0, |
| 258 | reloc_type); |
| 259 | } |
| 260 | while (*input_line_pointer++ == ','); |
| 261 | |
| 262 | input_line_pointer--; /* Put terminator back into stream. */ |
| 263 | demand_empty_rest_of_line (); |
| 264 | } |
| 265 | |
| 266 | static void |
| 267 | bfin_s_bss (int ignore ATTRIBUTE_UNUSED) |
| 268 | { |
| 269 | register int temp; |
| 270 | |
| 271 | temp = get_absolute_expression (); |
| 272 | subseg_set (bss_section, (subsegT) temp); |
| 273 | demand_empty_rest_of_line (); |
| 274 | } |
| 275 | |
| 276 | const pseudo_typeS md_pseudo_table[] = { |
| 277 | {"align", s_align_bytes, 0}, |
| 278 | {"byte2", cons, 2}, |
| 279 | {"byte4", cons, 4}, |
| 280 | {"picptr", bfin_pic_ptr, 4}, |
| 281 | {"code", obj_elf_section, 0}, |
| 282 | {"db", cons, 1}, |
| 283 | {"dd", cons, 4}, |
| 284 | {"dw", cons, 2}, |
| 285 | {"p", s_ignore, 0}, |
| 286 | {"pdata", s_ignore, 0}, |
| 287 | {"var", s_ignore, 0}, |
| 288 | {"bss", bfin_s_bss, 0}, |
| 289 | {0, 0, 0} |
| 290 | }; |
| 291 | |
| 292 | /* Characters that are used to denote comments and line separators. */ |
| 293 | const char comment_chars[] = ""; |
| 294 | const char line_comment_chars[] = "#"; |
| 295 | const char line_separator_chars[] = ";"; |
| 296 | |
| 297 | /* Characters that can be used to separate the mantissa from the |
| 298 | exponent in floating point numbers. */ |
| 299 | const char EXP_CHARS[] = "eE"; |
| 300 | |
| 301 | /* Characters that mean this number is a floating point constant. |
| 302 | As in 0f12.456 or 0d1.2345e12. */ |
| 303 | const char FLT_CHARS[] = "fFdDxX"; |
| 304 | |
| 305 | /* Define bfin-specific command-line options (there are none). */ |
| 306 | const char *md_shortopts = ""; |
| 307 | |
| 308 | #define OPTION_FDPIC (OPTION_MD_BASE) |
| 309 | |
| 310 | struct option md_longopts[] = |
| 311 | { |
| 312 | { "mfdpic", no_argument, NULL, OPTION_FDPIC }, |
| 313 | { NULL, no_argument, NULL, 0 }, |
| 314 | }; |
| 315 | |
| 316 | size_t md_longopts_size = sizeof (md_longopts); |
| 317 | |
| 318 | |
| 319 | int |
| 320 | md_parse_option (int c ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED) |
| 321 | { |
| 322 | switch (c) |
| 323 | { |
| 324 | default: |
| 325 | return 0; |
| 326 | |
| 327 | case OPTION_FDPIC: |
| 328 | bfin_flags |= EF_BFIN_FDPIC; |
| 329 | bfin_pic_flag = "-mfdpic"; |
| 330 | break; |
| 331 | } |
| 332 | |
| 333 | return 1; |
| 334 | } |
| 335 | |
| 336 | void |
| 337 | md_show_usage (FILE * stream ATTRIBUTE_UNUSED) |
| 338 | { |
| 339 | fprintf (stream, _(" BFIN specific command line options:\n")); |
| 340 | } |
| 341 | |
| 342 | /* Perform machine-specific initializations. */ |
| 343 | void |
| 344 | md_begin () |
| 345 | { |
| 346 | /* Set the ELF flags if desired. */ |
| 347 | if (bfin_flags) |
| 348 | bfd_set_private_flags (stdoutput, bfin_flags); |
| 349 | |
| 350 | /* Set the default machine type. */ |
| 351 | if (!bfd_set_arch_mach (stdoutput, bfd_arch_bfin, 0)) |
| 352 | as_warn ("Could not set architecture and machine."); |
| 353 | |
| 354 | /* Ensure that lines can begin with '(', for multiple |
| 355 | register stack pops. */ |
| 356 | lex_type ['('] = LEX_BEGIN_NAME; |
| 357 | |
| 358 | #ifdef OBJ_ELF |
| 359 | record_alignment (text_section, 2); |
| 360 | record_alignment (data_section, 2); |
| 361 | record_alignment (bss_section, 2); |
| 362 | #endif |
| 363 | |
| 364 | errorf = stderr; |
| 365 | obstack_init (&mempool); |
| 366 | |
| 367 | #ifdef DEBUG |
| 368 | extern int debug_codeselection; |
| 369 | debug_codeselection = 1; |
| 370 | #endif |
| 371 | |
| 372 | last_insn_size = 0; |
| 373 | } |
| 374 | |
| 375 | /* Perform the main parsing, and assembly of the input here. Also, |
| 376 | call the required routines for alignment and fixups here. |
| 377 | This is called for every line that contains real assembly code. */ |
| 378 | |
| 379 | void |
| 380 | md_assemble (char *line) |
| 381 | { |
| 382 | char *toP = 0; |
| 383 | extern char *current_inputline; |
| 384 | int size, insn_size; |
| 385 | struct bfin_insn *tmp_insn; |
| 386 | size_t len; |
| 387 | static size_t buffer_len = 0; |
| 388 | parse_state state; |
| 389 | |
| 390 | len = strlen (line); |
| 391 | if (len + 2 > buffer_len) |
| 392 | { |
| 393 | if (buffer_len > 0) |
| 394 | free (current_inputline); |
| 395 | buffer_len = len + 40; |
| 396 | current_inputline = xmalloc (buffer_len); |
| 397 | } |
| 398 | memcpy (current_inputline, line, len); |
| 399 | current_inputline[len] = ';'; |
| 400 | current_inputline[len + 1] = '\0'; |
| 401 | |
| 402 | state = parse (current_inputline); |
| 403 | if (state == NO_INSN_GENERATED) |
| 404 | return; |
| 405 | |
| 406 | for (insn_size = 0, tmp_insn = insn; tmp_insn; tmp_insn = tmp_insn->next) |
| 407 | if (!tmp_insn->reloc || !tmp_insn->exp->symbol) |
| 408 | insn_size += 2; |
| 409 | |
| 410 | if (insn_size) |
| 411 | toP = frag_more (insn_size); |
| 412 | |
| 413 | last_insn_size = insn_size; |
| 414 | |
| 415 | #ifdef DEBUG |
| 416 | printf ("INS:"); |
| 417 | #endif |
| 418 | while (insn) |
| 419 | { |
| 420 | if (insn->reloc && insn->exp->symbol) |
| 421 | { |
| 422 | char *prev_toP = toP - 2; |
| 423 | switch (insn->reloc) |
| 424 | { |
| 425 | case BFD_RELOC_BFIN_24_PCREL_JUMP_L: |
| 426 | case BFD_RELOC_24_PCREL: |
| 427 | case BFD_RELOC_BFIN_16_LOW: |
| 428 | case BFD_RELOC_BFIN_16_HIGH: |
| 429 | size = 4; |
| 430 | break; |
| 431 | default: |
| 432 | size = 2; |
| 433 | } |
| 434 | |
| 435 | /* Following if condition checks for the arithmetic relocations. |
| 436 | If the case then it doesn't required to generate the code. |
| 437 | It has been assumed that, their ID will be contiguous. */ |
| 438 | if ((BFD_ARELOC_BFIN_PUSH <= insn->reloc |
| 439 | && BFD_ARELOC_BFIN_COMP >= insn->reloc) |
| 440 | || insn->reloc == BFD_RELOC_BFIN_16_IMM) |
| 441 | { |
| 442 | size = 2; |
| 443 | } |
| 444 | if (insn->reloc == BFD_ARELOC_BFIN_CONST |
| 445 | || insn->reloc == BFD_ARELOC_BFIN_PUSH) |
| 446 | size = 4; |
| 447 | |
| 448 | fix_new (frag_now, |
| 449 | (prev_toP - frag_now->fr_literal), |
| 450 | size, insn->exp->symbol, insn->exp->value, |
| 451 | insn->pcrel, insn->reloc); |
| 452 | } |
| 453 | else |
| 454 | { |
| 455 | md_number_to_chars (toP, insn->value, 2); |
| 456 | toP += 2; |
| 457 | } |
| 458 | |
| 459 | #ifdef DEBUG |
| 460 | printf (" reloc :"); |
| 461 | printf (" %02x%02x", ((unsigned char *) &insn->value)[0], |
| 462 | ((unsigned char *) &insn->value)[1]); |
| 463 | printf ("\n"); |
| 464 | #endif |
| 465 | insn = insn->next; |
| 466 | } |
| 467 | #ifdef OBJ_ELF |
| 468 | dwarf2_emit_insn (insn_size); |
| 469 | #endif |
| 470 | } |
| 471 | |
| 472 | /* Parse one line of instructions, and generate opcode for it. |
| 473 | To parse the line, YACC and LEX are used, because the instruction set |
| 474 | syntax doesn't confirm to the AT&T assembly syntax. |
| 475 | To call a YACC & LEX generated parser, we must provide the input via |
| 476 | a FILE stream, otherwise stdin is used by default. Below the input |
| 477 | to the function will be put into a temporary file, then the generated |
| 478 | parser uses the temporary file for parsing. */ |
| 479 | |
| 480 | static parse_state |
| 481 | parse (char *line) |
| 482 | { |
| 483 | parse_state state; |
| 484 | YY_BUFFER_STATE buffstate; |
| 485 | |
| 486 | buffstate = yy_scan_string (line); |
| 487 | |
| 488 | /* our lex requires setting the start state to keyword |
| 489 | every line as the first word may be a keyword. |
| 490 | Fixes a bug where we could not have keywords as labels. */ |
| 491 | set_start_state (); |
| 492 | |
| 493 | /* Call yyparse here. */ |
| 494 | state = yyparse (); |
| 495 | if (state == SEMANTIC_ERROR) |
| 496 | { |
| 497 | as_bad ("Parse failed."); |
| 498 | insn = 0; |
| 499 | } |
| 500 | |
| 501 | yy_delete_buffer (buffstate); |
| 502 | return state; |
| 503 | } |
| 504 | |
| 505 | /* We need to handle various expressions properly. |
| 506 | Such as, [SP--] = 34, concerned by md_assemble(). */ |
| 507 | |
| 508 | void |
| 509 | md_operand (expressionS * expressionP) |
| 510 | { |
| 511 | if (*input_line_pointer == '[') |
| 512 | { |
| 513 | as_tsktsk ("We found a '['!"); |
| 514 | input_line_pointer++; |
| 515 | expression (expressionP); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | /* Handle undefined symbols. */ |
| 520 | symbolS * |
| 521 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
| 522 | { |
| 523 | return (symbolS *) 0; |
| 524 | } |
| 525 | |
| 526 | int |
| 527 | md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, |
| 528 | segT segment ATTRIBUTE_UNUSED) |
| 529 | { |
| 530 | return 0; |
| 531 | } |
| 532 | |
| 533 | /* Convert from target byte order to host byte order. */ |
| 534 | |
| 535 | static int |
| 536 | md_chars_to_number (char *val, int n) |
| 537 | { |
| 538 | int retval; |
| 539 | |
| 540 | for (retval = 0; n--;) |
| 541 | { |
| 542 | retval <<= 8; |
| 543 | retval |= val[n]; |
| 544 | } |
| 545 | return retval; |
| 546 | } |
| 547 | |
| 548 | void |
| 549 | md_apply_fix (fixS *fixP, valueT *valueP, segT seg ATTRIBUTE_UNUSED) |
| 550 | { |
| 551 | char *where = fixP->fx_frag->fr_literal + fixP->fx_where; |
| 552 | |
| 553 | long value = *valueP; |
| 554 | long newval; |
| 555 | |
| 556 | switch (fixP->fx_r_type) |
| 557 | { |
| 558 | case BFD_RELOC_BFIN_GOT: |
| 559 | case BFD_RELOC_BFIN_GOT17M4: |
| 560 | case BFD_RELOC_BFIN_FUNCDESC_GOT17M4: |
| 561 | fixP->fx_no_overflow = 1; |
| 562 | newval = md_chars_to_number (where, 2); |
| 563 | newval |= 0x0 & 0x7f; |
| 564 | md_number_to_chars (where, newval, 2); |
| 565 | break; |
| 566 | |
| 567 | case BFD_RELOC_BFIN_10_PCREL: |
| 568 | if (!value) |
| 569 | break; |
| 570 | if (value < -1024 || value > 1022) |
| 571 | as_bad_where (fixP->fx_file, fixP->fx_line, |
| 572 | "pcrel too far BFD_RELOC_BFIN_10"); |
| 573 | |
| 574 | /* 11 bit offset even numbered, so we remove right bit. */ |
| 575 | value = value >> 1; |
| 576 | newval = md_chars_to_number (where, 2); |
| 577 | newval |= value & 0x03ff; |
| 578 | md_number_to_chars (where, newval, 2); |
| 579 | break; |
| 580 | |
| 581 | case BFD_RELOC_BFIN_12_PCREL_JUMP: |
| 582 | case BFD_RELOC_BFIN_12_PCREL_JUMP_S: |
| 583 | case BFD_RELOC_12_PCREL: |
| 584 | if (!value) |
| 585 | break; |
| 586 | |
| 587 | if (value < -4096 || value > 4094) |
| 588 | as_bad_where (fixP->fx_file, fixP->fx_line, "pcrel too far BFD_RELOC_BFIN_12"); |
| 589 | /* 13 bit offset even numbered, so we remove right bit. */ |
| 590 | value = value >> 1; |
| 591 | newval = md_chars_to_number (where, 2); |
| 592 | newval |= value & 0xfff; |
| 593 | md_number_to_chars (where, newval, 2); |
| 594 | break; |
| 595 | |
| 596 | case BFD_RELOC_BFIN_16_LOW: |
| 597 | case BFD_RELOC_BFIN_16_HIGH: |
| 598 | fixP->fx_done = FALSE; |
| 599 | break; |
| 600 | |
| 601 | case BFD_RELOC_BFIN_24_PCREL_JUMP_L: |
| 602 | case BFD_RELOC_BFIN_24_PCREL_CALL_X: |
| 603 | case BFD_RELOC_24_PCREL: |
| 604 | if (!value) |
| 605 | break; |
| 606 | |
| 607 | if (value < -16777216 || value > 16777214) |
| 608 | as_bad_where (fixP->fx_file, fixP->fx_line, "pcrel too far BFD_RELOC_BFIN_24"); |
| 609 | |
| 610 | /* 25 bit offset even numbered, so we remove right bit. */ |
| 611 | value = value >> 1; |
| 612 | value++; |
| 613 | |
| 614 | md_number_to_chars (where - 2, value >> 16, 1); |
| 615 | md_number_to_chars (where, value, 1); |
| 616 | md_number_to_chars (where + 1, value >> 8, 1); |
| 617 | break; |
| 618 | |
| 619 | case BFD_RELOC_BFIN_5_PCREL: /* LSETUP (a, b) : "a" */ |
| 620 | if (!value) |
| 621 | break; |
| 622 | if (value < 4 || value > 30) |
| 623 | as_bad_where (fixP->fx_file, fixP->fx_line, "pcrel too far BFD_RELOC_BFIN_5"); |
| 624 | value = value >> 1; |
| 625 | newval = md_chars_to_number (where, 1); |
| 626 | newval = (newval & 0xf0) | (value & 0xf); |
| 627 | md_number_to_chars (where, newval, 1); |
| 628 | break; |
| 629 | |
| 630 | case BFD_RELOC_BFIN_11_PCREL: /* LSETUP (a, b) : "b" */ |
| 631 | if (!value) |
| 632 | break; |
| 633 | value += 2; |
| 634 | if (value < 4 || value > 2046) |
| 635 | as_bad_where (fixP->fx_file, fixP->fx_line, "pcrel too far BFD_RELOC_BFIN_11_PCREL"); |
| 636 | /* 11 bit unsigned even, so we remove right bit. */ |
| 637 | value = value >> 1; |
| 638 | newval = md_chars_to_number (where, 2); |
| 639 | newval |= value & 0x03ff; |
| 640 | md_number_to_chars (where, newval, 2); |
| 641 | break; |
| 642 | |
| 643 | case BFD_RELOC_8: |
| 644 | if (value < -0x80 || value >= 0x7f) |
| 645 | as_bad_where (fixP->fx_file, fixP->fx_line, "rel too far BFD_RELOC_8"); |
| 646 | md_number_to_chars (where, value, 1); |
| 647 | break; |
| 648 | |
| 649 | case BFD_RELOC_BFIN_16_IMM: |
| 650 | case BFD_RELOC_16: |
| 651 | if (value < -0x8000 || value >= 0x7fff) |
| 652 | as_bad_where (fixP->fx_file, fixP->fx_line, "rel too far BFD_RELOC_8"); |
| 653 | md_number_to_chars (where, value, 2); |
| 654 | break; |
| 655 | |
| 656 | case BFD_RELOC_32: |
| 657 | md_number_to_chars (where, value, 4); |
| 658 | break; |
| 659 | |
| 660 | case BFD_RELOC_BFIN_PLTPC: |
| 661 | md_number_to_chars (where, value, 2); |
| 662 | break; |
| 663 | |
| 664 | case BFD_RELOC_BFIN_FUNCDESC: |
| 665 | case BFD_RELOC_VTABLE_INHERIT: |
| 666 | case BFD_RELOC_VTABLE_ENTRY: |
| 667 | fixP->fx_done = FALSE; |
| 668 | break; |
| 669 | |
| 670 | default: |
| 671 | if ((BFD_ARELOC_BFIN_PUSH > fixP->fx_r_type) || (BFD_ARELOC_BFIN_COMP < fixP->fx_r_type)) |
| 672 | { |
| 673 | fprintf (stderr, "Relocation %d not handled in gas." " Contact support.\n", fixP->fx_r_type); |
| 674 | return; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | if (!fixP->fx_addsy) |
| 679 | fixP->fx_done = TRUE; |
| 680 | |
| 681 | } |
| 682 | |
| 683 | /* Round up a section size to the appropriate boundary. */ |
| 684 | valueT |
| 685 | md_section_align (segment, size) |
| 686 | segT segment; |
| 687 | valueT size; |
| 688 | { |
| 689 | int boundary = bfd_get_section_alignment (stdoutput, segment); |
| 690 | return ((size + (1 << boundary) - 1) & (-1 << boundary)); |
| 691 | } |
| 692 | |
| 693 | |
| 694 | /* Turn a string in input_line_pointer into a floating point |
| 695 | constant of type type, and store the appropriate bytes in |
| 696 | *litP. The number of LITTLENUMS emitted is stored in *sizeP. |
| 697 | An error message is returned, or NULL on OK. */ |
| 698 | |
| 699 | /* Equal to MAX_PRECISION in atof-ieee.c. */ |
| 700 | #define MAX_LITTLENUMS 6 |
| 701 | |
| 702 | char * |
| 703 | md_atof (type, litP, sizeP) |
| 704 | char type; |
| 705 | char * litP; |
| 706 | int * sizeP; |
| 707 | { |
| 708 | int prec; |
| 709 | LITTLENUM_TYPE words [MAX_LITTLENUMS]; |
| 710 | LITTLENUM_TYPE *wordP; |
| 711 | char * t; |
| 712 | |
| 713 | switch (type) |
| 714 | { |
| 715 | case 'f': |
| 716 | case 'F': |
| 717 | prec = 2; |
| 718 | break; |
| 719 | |
| 720 | case 'd': |
| 721 | case 'D': |
| 722 | prec = 4; |
| 723 | break; |
| 724 | |
| 725 | /* FIXME: Some targets allow other format chars for bigger sizes here. */ |
| 726 | |
| 727 | default: |
| 728 | *sizeP = 0; |
| 729 | return _("Bad call to md_atof()"); |
| 730 | } |
| 731 | |
| 732 | t = atof_ieee (input_line_pointer, type, words); |
| 733 | if (t) |
| 734 | input_line_pointer = t; |
| 735 | *sizeP = prec * sizeof (LITTLENUM_TYPE); |
| 736 | |
| 737 | *sizeP = prec * sizeof (LITTLENUM_TYPE); |
| 738 | /* This loops outputs the LITTLENUMs in REVERSE order; in accord with |
| 739 | the littleendianness of the processor. */ |
| 740 | for (wordP = words + prec - 1; prec--;) |
| 741 | { |
| 742 | md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE)); |
| 743 | litP += sizeof (LITTLENUM_TYPE); |
| 744 | } |
| 745 | |
| 746 | return 0; |
| 747 | } |
| 748 | |
| 749 | |
| 750 | /* If while processing a fixup, a reloc really needs to be created |
| 751 | then it is done here. */ |
| 752 | |
| 753 | arelent * |
| 754 | tc_gen_reloc (seg, fixp) |
| 755 | asection *seg ATTRIBUTE_UNUSED; |
| 756 | fixS *fixp; |
| 757 | { |
| 758 | arelent *reloc; |
| 759 | |
| 760 | reloc = (arelent *) xmalloc (sizeof (arelent)); |
| 761 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 762 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 763 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 764 | |
| 765 | reloc->addend = fixp->fx_offset; |
| 766 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 767 | |
| 768 | if (reloc->howto == (reloc_howto_type *) NULL) |
| 769 | { |
| 770 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 771 | /* xgettext:c-format. */ |
| 772 | _("reloc %d not supported by object file format"), |
| 773 | (int) fixp->fx_r_type); |
| 774 | |
| 775 | xfree (reloc); |
| 776 | |
| 777 | return NULL; |
| 778 | } |
| 779 | |
| 780 | return reloc; |
| 781 | } |
| 782 | |
| 783 | /* The location from which a PC relative jump should be calculated, |
| 784 | given a PC relative reloc. */ |
| 785 | |
| 786 | long |
| 787 | md_pcrel_from_section (fixP, sec) |
| 788 | fixS *fixP; |
| 789 | segT sec; |
| 790 | { |
| 791 | if (fixP->fx_addsy != (symbolS *) NULL |
| 792 | && (!S_IS_DEFINED (fixP->fx_addsy) |
| 793 | || S_GET_SEGMENT (fixP->fx_addsy) != sec)) |
| 794 | { |
| 795 | /* The symbol is undefined (or is defined but not in this section). |
| 796 | Let the linker figure it out. */ |
| 797 | return 0; |
| 798 | } |
| 799 | return fixP->fx_frag->fr_address + fixP->fx_where; |
| 800 | } |
| 801 | |
| 802 | /* Return true if the fix can be handled by GAS, false if it must |
| 803 | be passed through to the linker. */ |
| 804 | |
| 805 | bfd_boolean |
| 806 | bfin_fix_adjustable (fixS *fixP) |
| 807 | { |
| 808 | switch (fixP->fx_r_type) |
| 809 | { |
| 810 | /* Adjust_reloc_syms doesn't know about the GOT. */ |
| 811 | case BFD_RELOC_BFIN_GOT: |
| 812 | case BFD_RELOC_BFIN_GOT17M4: |
| 813 | case BFD_RELOC_BFIN_FUNCDESC_GOT17M4: |
| 814 | case BFD_RELOC_BFIN_PLTPC: |
| 815 | /* We need the symbol name for the VTABLE entries. */ |
| 816 | case BFD_RELOC_VTABLE_INHERIT: |
| 817 | case BFD_RELOC_VTABLE_ENTRY: |
| 818 | return 0; |
| 819 | |
| 820 | default: |
| 821 | return 1; |
| 822 | } |
| 823 | } |
| 824 | |
| 825 | |
| 826 | /* Handle the LOOP_BEGIN and LOOP_END statements. |
| 827 | Parse the Loop_Begin/Loop_End and create a label. */ |
| 828 | void |
| 829 | bfin_start_line_hook () |
| 830 | { |
| 831 | bfd_boolean maybe_begin = FALSE; |
| 832 | bfd_boolean maybe_end = FALSE; |
| 833 | |
| 834 | char *c1, *label_name; |
| 835 | symbolS *line_label; |
| 836 | char *c = input_line_pointer; |
| 837 | |
| 838 | while (ISSPACE (*c)) |
| 839 | c++; |
| 840 | |
| 841 | /* Look for Loop_Begin or Loop_End statements. */ |
| 842 | |
| 843 | if (*c != 'L' && *c != 'l') |
| 844 | return; |
| 845 | |
| 846 | c++; |
| 847 | if (*c != 'O' && *c != 'o') |
| 848 | return; |
| 849 | |
| 850 | c++; |
| 851 | if (*c != 'O' && *c != 'o') |
| 852 | return; |
| 853 | |
| 854 | c++; |
| 855 | if (*c != 'P' && *c != 'p') |
| 856 | return; |
| 857 | |
| 858 | c++; |
| 859 | if (*c != '_') |
| 860 | return; |
| 861 | |
| 862 | c++; |
| 863 | if (*c == 'E' || *c == 'e') |
| 864 | maybe_end = TRUE; |
| 865 | else if (*c == 'B' || *c == 'b') |
| 866 | maybe_begin = TRUE; |
| 867 | else |
| 868 | return; |
| 869 | |
| 870 | if (maybe_end) |
| 871 | { |
| 872 | c++; |
| 873 | if (*c != 'N' && *c != 'n') |
| 874 | return; |
| 875 | |
| 876 | c++; |
| 877 | if (*c != 'D' && *c != 'd') |
| 878 | return; |
| 879 | } |
| 880 | |
| 881 | if (maybe_begin) |
| 882 | { |
| 883 | c++; |
| 884 | if (*c != 'E' && *c != 'e') |
| 885 | return; |
| 886 | |
| 887 | c++; |
| 888 | if (*c != 'G' && *c != 'g') |
| 889 | return; |
| 890 | |
| 891 | c++; |
| 892 | if (*c != 'I' && *c != 'i') |
| 893 | return; |
| 894 | |
| 895 | c++; |
| 896 | if (*c != 'N' && *c != 'n') |
| 897 | return; |
| 898 | } |
| 899 | |
| 900 | c++; |
| 901 | while (ISSPACE (*c)) c++; |
| 902 | c1 = c; |
| 903 | while (ISALPHA (*c) || ISDIGIT (*c) || *c == '_') c++; |
| 904 | |
| 905 | input_line_pointer = c; |
| 906 | if (maybe_end) |
| 907 | { |
| 908 | label_name = (char *) xmalloc ((c - c1) + strlen ("__END") + 1); |
| 909 | label_name[0] = 0; |
| 910 | strncat (label_name, c1, c-c1); |
| 911 | strcat (label_name, "__END"); |
| 912 | } |
| 913 | else /* maybe_begin. */ |
| 914 | { |
| 915 | label_name = (char *) xmalloc ((c - c1) + strlen ("__BEGIN") + 1); |
| 916 | label_name[0] = 0; |
| 917 | strncat (label_name, c1, c-c1); |
| 918 | strcat (label_name, "__BEGIN"); |
| 919 | } |
| 920 | |
| 921 | line_label = colon (label_name); |
| 922 | |
| 923 | /* Loop_End follows the last instruction in the loop. |
| 924 | Adjust label address. */ |
| 925 | if (maybe_end) |
| 926 | line_label->sy_value.X_add_number -= last_insn_size; |
| 927 | |
| 928 | } |
| 929 | |
| 930 | /* Special extra functions that help bfin-parse.y perform its job. */ |
| 931 | |
| 932 | #include <stdio.h> |
| 933 | #include <assert.h> |
| 934 | #include <obstack.h> |
| 935 | #include <bfd.h> |
| 936 | #include "bfin-defs.h" |
| 937 | |
| 938 | struct obstack mempool; |
| 939 | |
| 940 | INSTR_T |
| 941 | conscode (INSTR_T head, INSTR_T tail) |
| 942 | { |
| 943 | if (!head) |
| 944 | return tail; |
| 945 | head->next = tail; |
| 946 | return head; |
| 947 | } |
| 948 | |
| 949 | INSTR_T |
| 950 | conctcode (INSTR_T head, INSTR_T tail) |
| 951 | { |
| 952 | INSTR_T temp = (head); |
| 953 | if (!head) |
| 954 | return tail; |
| 955 | while (temp->next) |
| 956 | temp = temp->next; |
| 957 | temp->next = tail; |
| 958 | |
| 959 | return head; |
| 960 | } |
| 961 | |
| 962 | INSTR_T |
| 963 | note_reloc (INSTR_T code, Expr_Node * symbol, int reloc, int pcrel) |
| 964 | { |
| 965 | /* Assert that the symbol is not an operator. */ |
| 966 | assert (symbol->type == Expr_Node_Reloc); |
| 967 | |
| 968 | return note_reloc1 (code, symbol->value.s_value, reloc, pcrel); |
| 969 | |
| 970 | } |
| 971 | |
| 972 | INSTR_T |
| 973 | note_reloc1 (INSTR_T code, const char *symbol, int reloc, int pcrel) |
| 974 | { |
| 975 | code->reloc = reloc; |
| 976 | code->exp = mkexpr (0, symbol_find_or_make (symbol)); |
| 977 | code->pcrel = pcrel; |
| 978 | return code; |
| 979 | } |
| 980 | |
| 981 | INSTR_T |
| 982 | note_reloc2 (INSTR_T code, const char *symbol, int reloc, int value, int pcrel) |
| 983 | { |
| 984 | code->reloc = reloc; |
| 985 | code->exp = mkexpr (value, symbol_find_or_make (symbol)); |
| 986 | code->pcrel = pcrel; |
| 987 | return code; |
| 988 | } |
| 989 | |
| 990 | INSTR_T |
| 991 | gencode (unsigned long x) |
| 992 | { |
| 993 | INSTR_T cell = (INSTR_T) obstack_alloc (&mempool, sizeof (struct bfin_insn)); |
| 994 | memset (cell, 0, sizeof (struct bfin_insn)); |
| 995 | cell->value = (x); |
| 996 | return cell; |
| 997 | } |
| 998 | |
| 999 | int reloc; |
| 1000 | int ninsns; |
| 1001 | int count_insns; |
| 1002 | |
| 1003 | static void * |
| 1004 | allocate (int n) |
| 1005 | { |
| 1006 | return (void *) obstack_alloc (&mempool, n); |
| 1007 | } |
| 1008 | |
| 1009 | Expr_Node * |
| 1010 | Expr_Node_Create (Expr_Node_Type type, |
| 1011 | Expr_Node_Value value, |
| 1012 | Expr_Node *Left_Child, |
| 1013 | Expr_Node *Right_Child) |
| 1014 | { |
| 1015 | |
| 1016 | |
| 1017 | Expr_Node *node = (Expr_Node *) allocate (sizeof (Expr_Node)); |
| 1018 | node->type = type; |
| 1019 | node->value = value; |
| 1020 | node->Left_Child = Left_Child; |
| 1021 | node->Right_Child = Right_Child; |
| 1022 | return node; |
| 1023 | } |
| 1024 | |
| 1025 | static const char *con = ".__constant"; |
| 1026 | static const char *op = ".__operator"; |
| 1027 | static INSTR_T Expr_Node_Gen_Reloc_R (Expr_Node * head); |
| 1028 | INSTR_T Expr_Node_Gen_Reloc (Expr_Node *head, int parent_reloc); |
| 1029 | |
| 1030 | INSTR_T |
| 1031 | Expr_Node_Gen_Reloc (Expr_Node * head, int parent_reloc) |
| 1032 | { |
| 1033 | /* Top level reloction expression generator VDSP style. |
| 1034 | If the relocation is just by itself, generate one item |
| 1035 | else generate this convoluted expression. */ |
| 1036 | |
| 1037 | INSTR_T note = NULL_CODE; |
| 1038 | INSTR_T note1 = NULL_CODE; |
| 1039 | int pcrel = 1; /* Is the parent reloc pcrelative? |
| 1040 | This calculation here and HOWTO should match. */ |
| 1041 | |
| 1042 | if (parent_reloc) |
| 1043 | { |
| 1044 | /* If it's 32 bit quantity then 16bit code needs to be added. */ |
| 1045 | int value = 0; |
| 1046 | |
| 1047 | if (head->type == Expr_Node_Constant) |
| 1048 | { |
| 1049 | /* If note1 is not null code, we have to generate a right |
| 1050 | aligned value for the constant. Otherwise the reloc is |
| 1051 | a part of the basic command and the yacc file |
| 1052 | generates this. */ |
| 1053 | value = head->value.i_value; |
| 1054 | } |
| 1055 | switch (parent_reloc) |
| 1056 | { |
| 1057 | /* Some reloctions will need to allocate extra words. */ |
| 1058 | case BFD_RELOC_BFIN_16_IMM: |
| 1059 | case BFD_RELOC_BFIN_16_LOW: |
| 1060 | case BFD_RELOC_BFIN_16_HIGH: |
| 1061 | note1 = conscode (gencode (value), NULL_CODE); |
| 1062 | pcrel = 0; |
| 1063 | break; |
| 1064 | case BFD_RELOC_BFIN_PLTPC: |
| 1065 | note1 = conscode (gencode (value), NULL_CODE); |
| 1066 | pcrel = 0; |
| 1067 | break; |
| 1068 | case BFD_RELOC_16: |
| 1069 | case BFD_RELOC_BFIN_GOT: |
| 1070 | case BFD_RELOC_BFIN_GOT17M4: |
| 1071 | case BFD_RELOC_BFIN_FUNCDESC_GOT17M4: |
| 1072 | note1 = conscode (gencode (value), NULL_CODE); |
| 1073 | pcrel = 0; |
| 1074 | break; |
| 1075 | case BFD_RELOC_24_PCREL: |
| 1076 | case BFD_RELOC_BFIN_24_PCREL_JUMP_L: |
| 1077 | case BFD_RELOC_BFIN_24_PCREL_CALL_X: |
| 1078 | /* These offsets are even numbered pcrel. */ |
| 1079 | note1 = conscode (gencode (value >> 1), NULL_CODE); |
| 1080 | break; |
| 1081 | default: |
| 1082 | note1 = NULL_CODE; |
| 1083 | } |
| 1084 | } |
| 1085 | if (head->type == Expr_Node_Constant) |
| 1086 | note = note1; |
| 1087 | else if (head->type == Expr_Node_Reloc) |
| 1088 | { |
| 1089 | note = note_reloc1 (gencode (0), head->value.s_value, parent_reloc, pcrel); |
| 1090 | if (note1 != NULL_CODE) |
| 1091 | note = conscode (note1, note); |
| 1092 | } |
| 1093 | else if (head->type == Expr_Node_Binop |
| 1094 | && (head->value.op_value == Expr_Op_Type_Add |
| 1095 | || head->value.op_value == Expr_Op_Type_Sub) |
| 1096 | && head->Left_Child->type == Expr_Node_Reloc |
| 1097 | && head->Right_Child->type == Expr_Node_Constant) |
| 1098 | { |
| 1099 | int val = head->Right_Child->value.i_value; |
| 1100 | if (head->value.op_value == Expr_Op_Type_Sub) |
| 1101 | val = -val; |
| 1102 | note = conscode (note_reloc2 (gencode (0), head->Left_Child->value.s_value, |
| 1103 | parent_reloc, val, 0), |
| 1104 | NULL_CODE); |
| 1105 | if (note1 != NULL_CODE) |
| 1106 | note = conscode (note1, note); |
| 1107 | } |
| 1108 | else |
| 1109 | { |
| 1110 | /* Call the recursive function. */ |
| 1111 | note = note_reloc1 (gencode (0), op, parent_reloc, pcrel); |
| 1112 | if (note1 != NULL_CODE) |
| 1113 | note = conscode (note1, note); |
| 1114 | note = conctcode (Expr_Node_Gen_Reloc_R (head), note); |
| 1115 | } |
| 1116 | return note; |
| 1117 | } |
| 1118 | |
| 1119 | static INSTR_T |
| 1120 | Expr_Node_Gen_Reloc_R (Expr_Node * head) |
| 1121 | { |
| 1122 | |
| 1123 | INSTR_T note = 0; |
| 1124 | INSTR_T note1 = 0; |
| 1125 | |
| 1126 | switch (head->type) |
| 1127 | { |
| 1128 | case Expr_Node_Constant: |
| 1129 | note = conscode (note_reloc2 (gencode (0), con, BFD_ARELOC_BFIN_CONST, head->value.i_value, 0), NULL_CODE); |
| 1130 | break; |
| 1131 | case Expr_Node_Reloc: |
| 1132 | note = conscode (note_reloc (gencode (0), head, BFD_ARELOC_BFIN_PUSH, 0), NULL_CODE); |
| 1133 | break; |
| 1134 | case Expr_Node_Binop: |
| 1135 | note1 = conctcode (Expr_Node_Gen_Reloc_R (head->Left_Child), Expr_Node_Gen_Reloc_R (head->Right_Child)); |
| 1136 | switch (head->value.op_value) |
| 1137 | { |
| 1138 | case Expr_Op_Type_Add: |
| 1139 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_ADD, 0), NULL_CODE)); |
| 1140 | break; |
| 1141 | case Expr_Op_Type_Sub: |
| 1142 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_SUB, 0), NULL_CODE)); |
| 1143 | break; |
| 1144 | case Expr_Op_Type_Mult: |
| 1145 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_MULT, 0), NULL_CODE)); |
| 1146 | break; |
| 1147 | case Expr_Op_Type_Div: |
| 1148 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_DIV, 0), NULL_CODE)); |
| 1149 | break; |
| 1150 | case Expr_Op_Type_Mod: |
| 1151 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_MOD, 0), NULL_CODE)); |
| 1152 | break; |
| 1153 | case Expr_Op_Type_Lshift: |
| 1154 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_LSHIFT, 0), NULL_CODE)); |
| 1155 | break; |
| 1156 | case Expr_Op_Type_Rshift: |
| 1157 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_RSHIFT, 0), NULL_CODE)); |
| 1158 | break; |
| 1159 | case Expr_Op_Type_BAND: |
| 1160 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_AND, 0), NULL_CODE)); |
| 1161 | break; |
| 1162 | case Expr_Op_Type_BOR: |
| 1163 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_OR, 0), NULL_CODE)); |
| 1164 | break; |
| 1165 | case Expr_Op_Type_BXOR: |
| 1166 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_XOR, 0), NULL_CODE)); |
| 1167 | break; |
| 1168 | case Expr_Op_Type_LAND: |
| 1169 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_LAND, 0), NULL_CODE)); |
| 1170 | break; |
| 1171 | case Expr_Op_Type_LOR: |
| 1172 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_LOR, 0), NULL_CODE)); |
| 1173 | break; |
| 1174 | default: |
| 1175 | fprintf (stderr, "%s:%d:Unkonwn operator found for arithmetic" " relocation", __FILE__, __LINE__); |
| 1176 | |
| 1177 | |
| 1178 | } |
| 1179 | break; |
| 1180 | case Expr_Node_Unop: |
| 1181 | note1 = conscode (Expr_Node_Gen_Reloc_R (head->Left_Child), NULL_CODE); |
| 1182 | switch (head->value.op_value) |
| 1183 | { |
| 1184 | case Expr_Op_Type_NEG: |
| 1185 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_NEG, 0), NULL_CODE)); |
| 1186 | break; |
| 1187 | case Expr_Op_Type_COMP: |
| 1188 | note = conctcode (note1, conscode (note_reloc1 (gencode (0), op, BFD_ARELOC_BFIN_COMP, 0), NULL_CODE)); |
| 1189 | break; |
| 1190 | default: |
| 1191 | fprintf (stderr, "%s:%d:Unkonwn operator found for arithmetic" " relocation", __FILE__, __LINE__); |
| 1192 | } |
| 1193 | break; |
| 1194 | default: |
| 1195 | fprintf (stderr, "%s:%d:Unknown node expression found during " "arithmetic relocation generation", __FILE__, __LINE__); |
| 1196 | } |
| 1197 | return note; |
| 1198 | } |
| 1199 | |
| 1200 | |
| 1201 | /* Blackfin opcode generation. */ |
| 1202 | |
| 1203 | /* These functions are called by the generated parser |
| 1204 | (from bfin-parse.y), the register type classification |
| 1205 | happens in bfin-lex.l. */ |
| 1206 | |
| 1207 | #include "bfin-aux.h" |
| 1208 | #include "opcode/bfin.h" |
| 1209 | |
| 1210 | #define INIT(t) t c_code = init_##t |
| 1211 | #define ASSIGN(x) c_code.opcode |= ((x & c_code.mask_##x)<<c_code.bits_##x) |
| 1212 | #define ASSIGN_R(x) c_code.opcode |= (((x ? (x->regno & CODE_MASK) : 0) & c_code.mask_##x)<<c_code.bits_##x) |
| 1213 | |
| 1214 | #define HI(x) ((x >> 16) & 0xffff) |
| 1215 | #define LO(x) ((x ) & 0xffff) |
| 1216 | |
| 1217 | #define GROUP(x) ((x->regno & CLASS_MASK) >> 4) |
| 1218 | |
| 1219 | #define GEN_OPCODE32() \ |
| 1220 | conscode (gencode (HI (c_code.opcode)), \ |
| 1221 | conscode (gencode (LO (c_code.opcode)), NULL_CODE)) |
| 1222 | |
| 1223 | #define GEN_OPCODE16() \ |
| 1224 | conscode (gencode (c_code.opcode), NULL_CODE) |
| 1225 | |
| 1226 | |
| 1227 | /* 32 BIT INSTRUCTIONS. */ |
| 1228 | |
| 1229 | |
| 1230 | /* DSP32 instruction generation. */ |
| 1231 | |
| 1232 | INSTR_T |
| 1233 | bfin_gen_dsp32mac (int op1, int MM, int mmod, int w1, int P, |
| 1234 | int h01, int h11, int h00, int h10, int op0, |
| 1235 | REG_T dst, REG_T src0, REG_T src1, int w0) |
| 1236 | { |
| 1237 | INIT (DSP32Mac); |
| 1238 | |
| 1239 | ASSIGN (op0); |
| 1240 | ASSIGN (op1); |
| 1241 | ASSIGN (MM); |
| 1242 | ASSIGN (mmod); |
| 1243 | ASSIGN (w0); |
| 1244 | ASSIGN (w1); |
| 1245 | ASSIGN (h01); |
| 1246 | ASSIGN (h11); |
| 1247 | ASSIGN (h00); |
| 1248 | ASSIGN (h10); |
| 1249 | ASSIGN (P); |
| 1250 | |
| 1251 | /* If we have full reg assignments, mask out LSB to encode |
| 1252 | single or simultaneous even/odd register moves. */ |
| 1253 | if (P) |
| 1254 | { |
| 1255 | dst->regno &= 0x06; |
| 1256 | } |
| 1257 | |
| 1258 | ASSIGN_R (dst); |
| 1259 | ASSIGN_R (src0); |
| 1260 | ASSIGN_R (src1); |
| 1261 | |
| 1262 | return GEN_OPCODE32 (); |
| 1263 | } |
| 1264 | |
| 1265 | INSTR_T |
| 1266 | bfin_gen_dsp32mult (int op1, int MM, int mmod, int w1, int P, |
| 1267 | int h01, int h11, int h00, int h10, int op0, |
| 1268 | REG_T dst, REG_T src0, REG_T src1, int w0) |
| 1269 | { |
| 1270 | INIT (DSP32Mult); |
| 1271 | |
| 1272 | ASSIGN (op0); |
| 1273 | ASSIGN (op1); |
| 1274 | ASSIGN (MM); |
| 1275 | ASSIGN (mmod); |
| 1276 | ASSIGN (w0); |
| 1277 | ASSIGN (w1); |
| 1278 | ASSIGN (h01); |
| 1279 | ASSIGN (h11); |
| 1280 | ASSIGN (h00); |
| 1281 | ASSIGN (h10); |
| 1282 | ASSIGN (P); |
| 1283 | |
| 1284 | if (P) |
| 1285 | { |
| 1286 | dst->regno &= 0x06; |
| 1287 | } |
| 1288 | |
| 1289 | ASSIGN_R (dst); |
| 1290 | ASSIGN_R (src0); |
| 1291 | ASSIGN_R (src1); |
| 1292 | |
| 1293 | return GEN_OPCODE32 (); |
| 1294 | } |
| 1295 | |
| 1296 | INSTR_T |
| 1297 | bfin_gen_dsp32alu (int HL, int aopcde, int aop, int s, int x, |
| 1298 | REG_T dst0, REG_T dst1, REG_T src0, REG_T src1) |
| 1299 | { |
| 1300 | INIT (DSP32Alu); |
| 1301 | |
| 1302 | ASSIGN (HL); |
| 1303 | ASSIGN (aopcde); |
| 1304 | ASSIGN (aop); |
| 1305 | ASSIGN (s); |
| 1306 | ASSIGN (x); |
| 1307 | ASSIGN_R (dst0); |
| 1308 | ASSIGN_R (dst1); |
| 1309 | ASSIGN_R (src0); |
| 1310 | ASSIGN_R (src1); |
| 1311 | |
| 1312 | return GEN_OPCODE32 (); |
| 1313 | } |
| 1314 | |
| 1315 | INSTR_T |
| 1316 | bfin_gen_dsp32shift (int sopcde, REG_T dst0, REG_T src0, |
| 1317 | REG_T src1, int sop, int HLs) |
| 1318 | { |
| 1319 | INIT (DSP32Shift); |
| 1320 | |
| 1321 | ASSIGN (sopcde); |
| 1322 | ASSIGN (sop); |
| 1323 | ASSIGN (HLs); |
| 1324 | |
| 1325 | ASSIGN_R (dst0); |
| 1326 | ASSIGN_R (src0); |
| 1327 | ASSIGN_R (src1); |
| 1328 | |
| 1329 | return GEN_OPCODE32 (); |
| 1330 | } |
| 1331 | |
| 1332 | INSTR_T |
| 1333 | bfin_gen_dsp32shiftimm (int sopcde, REG_T dst0, int immag, |
| 1334 | REG_T src1, int sop, int HLs) |
| 1335 | { |
| 1336 | INIT (DSP32ShiftImm); |
| 1337 | |
| 1338 | ASSIGN (sopcde); |
| 1339 | ASSIGN (sop); |
| 1340 | ASSIGN (HLs); |
| 1341 | |
| 1342 | ASSIGN_R (dst0); |
| 1343 | ASSIGN (immag); |
| 1344 | ASSIGN_R (src1); |
| 1345 | |
| 1346 | return GEN_OPCODE32 (); |
| 1347 | } |
| 1348 | |
| 1349 | /* LOOP SETUP. */ |
| 1350 | |
| 1351 | INSTR_T |
| 1352 | bfin_gen_loopsetup (Expr_Node * psoffset, REG_T c, int rop, |
| 1353 | Expr_Node * peoffset, REG_T reg) |
| 1354 | { |
| 1355 | int soffset, eoffset; |
| 1356 | INIT (LoopSetup); |
| 1357 | |
| 1358 | soffset = (EXPR_VALUE (psoffset) >> 1); |
| 1359 | ASSIGN (soffset); |
| 1360 | eoffset = (EXPR_VALUE (peoffset) >> 1); |
| 1361 | ASSIGN (eoffset); |
| 1362 | ASSIGN (rop); |
| 1363 | ASSIGN_R (c); |
| 1364 | ASSIGN_R (reg); |
| 1365 | |
| 1366 | return |
| 1367 | conscode (gencode (HI (c_code.opcode)), |
| 1368 | conctcode (Expr_Node_Gen_Reloc (psoffset, BFD_RELOC_BFIN_5_PCREL), |
| 1369 | conctcode (gencode (LO (c_code.opcode)), Expr_Node_Gen_Reloc (peoffset, BFD_RELOC_BFIN_11_PCREL)))); |
| 1370 | |
| 1371 | } |
| 1372 | |
| 1373 | /* Call, Link. */ |
| 1374 | |
| 1375 | INSTR_T |
| 1376 | bfin_gen_calla (Expr_Node * addr, int S) |
| 1377 | { |
| 1378 | int val; |
| 1379 | int high_val; |
| 1380 | int reloc = 0; |
| 1381 | INIT (CALLa); |
| 1382 | |
| 1383 | switch(S){ |
| 1384 | case 0 : reloc = BFD_RELOC_BFIN_24_PCREL_JUMP_L; break; |
| 1385 | case 1 : reloc = BFD_RELOC_24_PCREL; break; |
| 1386 | case 2 : reloc = BFD_RELOC_BFIN_PLTPC; break; |
| 1387 | default : break; |
| 1388 | } |
| 1389 | |
| 1390 | ASSIGN (S); |
| 1391 | |
| 1392 | val = EXPR_VALUE (addr) >> 1; |
| 1393 | high_val = val >> 16; |
| 1394 | |
| 1395 | return conscode (gencode (HI (c_code.opcode) | (high_val & 0xff)), |
| 1396 | Expr_Node_Gen_Reloc (addr, reloc)); |
| 1397 | } |
| 1398 | |
| 1399 | INSTR_T |
| 1400 | bfin_gen_linkage (int R, int framesize) |
| 1401 | { |
| 1402 | INIT (Linkage); |
| 1403 | |
| 1404 | ASSIGN (R); |
| 1405 | ASSIGN (framesize); |
| 1406 | |
| 1407 | return GEN_OPCODE32 (); |
| 1408 | } |
| 1409 | |
| 1410 | |
| 1411 | /* Load and Store. */ |
| 1412 | |
| 1413 | INSTR_T |
| 1414 | bfin_gen_ldimmhalf (REG_T reg, int H, int S, int Z, Expr_Node * phword, int reloc) |
| 1415 | { |
| 1416 | int grp, hword; |
| 1417 | unsigned val = EXPR_VALUE (phword); |
| 1418 | INIT (LDIMMhalf); |
| 1419 | |
| 1420 | ASSIGN (H); |
| 1421 | ASSIGN (S); |
| 1422 | ASSIGN (Z); |
| 1423 | |
| 1424 | ASSIGN_R (reg); |
| 1425 | grp = (GROUP (reg)); |
| 1426 | ASSIGN (grp); |
| 1427 | if (reloc == 2) |
| 1428 | { |
| 1429 | return conscode (gencode (HI (c_code.opcode)), Expr_Node_Gen_Reloc (phword, BFD_RELOC_BFIN_16_IMM)); |
| 1430 | } |
| 1431 | else if (reloc == 1) |
| 1432 | { |
| 1433 | return conscode (gencode (HI (c_code.opcode)), Expr_Node_Gen_Reloc (phword, IS_H (*reg) ? BFD_RELOC_BFIN_16_HIGH : BFD_RELOC_BFIN_16_LOW)); |
| 1434 | } |
| 1435 | else |
| 1436 | { |
| 1437 | hword = val; |
| 1438 | ASSIGN (hword); |
| 1439 | } |
| 1440 | return GEN_OPCODE32 (); |
| 1441 | } |
| 1442 | |
| 1443 | INSTR_T |
| 1444 | bfin_gen_ldstidxi (REG_T ptr, REG_T reg, int W, int sz, int Z, Expr_Node * poffset) |
| 1445 | { |
| 1446 | INIT (LDSTidxI); |
| 1447 | |
| 1448 | if (!IS_PREG (*ptr) || (!IS_DREG (*reg) && !Z)) |
| 1449 | { |
| 1450 | fprintf (stderr, "Warning: possible mixup of Preg/Dreg\n"); |
| 1451 | return 0; |
| 1452 | } |
| 1453 | |
| 1454 | ASSIGN_R (ptr); |
| 1455 | ASSIGN_R (reg); |
| 1456 | ASSIGN (W); |
| 1457 | ASSIGN (sz); |
| 1458 | |
| 1459 | ASSIGN (Z); |
| 1460 | |
| 1461 | if (poffset->type != Expr_Node_Constant) |
| 1462 | { |
| 1463 | /* a GOT relocation such as R0 = [P5 + symbol@GOT] */ |
| 1464 | /* distinguish between R0 = [P5 + symbol@GOT] and |
| 1465 | P5 = [P5 + _current_shared_library_p5_offset_] |
| 1466 | */ |
| 1467 | if (poffset->type == Expr_Node_Reloc |
| 1468 | && !strcmp (poffset->value.s_value, |
| 1469 | "_current_shared_library_p5_offset_")) |
| 1470 | { |
| 1471 | return conscode (gencode (HI (c_code.opcode)), |
| 1472 | Expr_Node_Gen_Reloc(poffset, BFD_RELOC_16)); |
| 1473 | } |
| 1474 | else if (poffset->type != Expr_Node_GOT_Reloc) |
| 1475 | abort (); |
| 1476 | |
| 1477 | return conscode (gencode (HI (c_code.opcode)), |
| 1478 | Expr_Node_Gen_Reloc(poffset->Left_Child, |
| 1479 | poffset->value.i_value)); |
| 1480 | } |
| 1481 | else |
| 1482 | { |
| 1483 | int value, offset; |
| 1484 | switch (sz) |
| 1485 | { // load/store access size |
| 1486 | case 0: // 32 bit |
| 1487 | value = EXPR_VALUE (poffset) >> 2; |
| 1488 | break; |
| 1489 | case 1: // 16 bit |
| 1490 | value = EXPR_VALUE (poffset) >> 1; |
| 1491 | break; |
| 1492 | case 2: // 8 bit |
| 1493 | value = EXPR_VALUE (poffset); |
| 1494 | break; |
| 1495 | default: |
| 1496 | abort (); |
| 1497 | } |
| 1498 | |
| 1499 | offset = (value & 0xffff); |
| 1500 | ASSIGN (offset); |
| 1501 | return GEN_OPCODE32 (); |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | |
| 1506 | INSTR_T |
| 1507 | bfin_gen_ldst (REG_T ptr, REG_T reg, int aop, int sz, int Z, int W) |
| 1508 | { |
| 1509 | INIT (LDST); |
| 1510 | |
| 1511 | if (!IS_PREG (*ptr) || (!IS_DREG (*reg) && !Z)) |
| 1512 | { |
| 1513 | fprintf (stderr, "Warning: possible mixup of Preg/Dreg\n"); |
| 1514 | return 0; |
| 1515 | } |
| 1516 | |
| 1517 | ASSIGN_R (ptr); |
| 1518 | ASSIGN_R (reg); |
| 1519 | ASSIGN (aop); |
| 1520 | ASSIGN (sz); |
| 1521 | ASSIGN (Z); |
| 1522 | ASSIGN (W); |
| 1523 | |
| 1524 | return GEN_OPCODE16 (); |
| 1525 | } |
| 1526 | |
| 1527 | INSTR_T |
| 1528 | bfin_gen_ldstii (REG_T ptr, REG_T reg, Expr_Node * poffset, int W, int op) |
| 1529 | { |
| 1530 | int offset; |
| 1531 | int value = 0; |
| 1532 | INIT (LDSTii); |
| 1533 | |
| 1534 | |
| 1535 | if (!IS_PREG (*ptr)) |
| 1536 | { |
| 1537 | fprintf (stderr, "Warning: possible mixup of Preg/Dreg\n"); |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
| 1541 | switch (op) |
| 1542 | { |
| 1543 | case 1: |
| 1544 | case 2: |
| 1545 | value = EXPR_VALUE (poffset) >> 1; |
| 1546 | break; |
| 1547 | case 0: |
| 1548 | case 3: |
| 1549 | value = EXPR_VALUE (poffset) >> 2; |
| 1550 | break; |
| 1551 | } |
| 1552 | |
| 1553 | ASSIGN_R (ptr); |
| 1554 | ASSIGN_R (reg); |
| 1555 | |
| 1556 | offset = value; |
| 1557 | ASSIGN (offset); |
| 1558 | ASSIGN (W); |
| 1559 | ASSIGN (op); |
| 1560 | |
| 1561 | return GEN_OPCODE16 (); |
| 1562 | } |
| 1563 | |
| 1564 | INSTR_T |
| 1565 | bfin_gen_ldstiifp (REG_T sreg, Expr_Node * poffset, int W) |
| 1566 | { |
| 1567 | /* Set bit 4 if it's a Preg. */ |
| 1568 | int reg = (sreg->regno & CODE_MASK) | (IS_PREG (*sreg) ? 0x8 : 0x0); |
| 1569 | int offset = ((~(EXPR_VALUE (poffset) >> 2)) & 0x1f) + 1; |
| 1570 | INIT (LDSTiiFP); |
| 1571 | ASSIGN (reg); |
| 1572 | ASSIGN (offset); |
| 1573 | ASSIGN (W); |
| 1574 | |
| 1575 | return GEN_OPCODE16 (); |
| 1576 | } |
| 1577 | |
| 1578 | INSTR_T |
| 1579 | bfin_gen_ldstpmod (REG_T ptr, REG_T reg, int aop, int W, REG_T idx) |
| 1580 | { |
| 1581 | INIT (LDSTpmod); |
| 1582 | |
| 1583 | ASSIGN_R (ptr); |
| 1584 | ASSIGN_R (reg); |
| 1585 | ASSIGN (aop); |
| 1586 | ASSIGN (W); |
| 1587 | ASSIGN_R (idx); |
| 1588 | |
| 1589 | return GEN_OPCODE16 (); |
| 1590 | } |
| 1591 | |
| 1592 | INSTR_T |
| 1593 | bfin_gen_dspldst (REG_T i, REG_T reg, int aop, int W, int m) |
| 1594 | { |
| 1595 | INIT (DspLDST); |
| 1596 | |
| 1597 | ASSIGN_R (i); |
| 1598 | ASSIGN_R (reg); |
| 1599 | ASSIGN (aop); |
| 1600 | ASSIGN (W); |
| 1601 | ASSIGN (m); |
| 1602 | |
| 1603 | return GEN_OPCODE16 (); |
| 1604 | } |
| 1605 | |
| 1606 | INSTR_T |
| 1607 | bfin_gen_logi2op (int opc, int src, int dst) |
| 1608 | { |
| 1609 | INIT (LOGI2op); |
| 1610 | |
| 1611 | ASSIGN (opc); |
| 1612 | ASSIGN (src); |
| 1613 | ASSIGN (dst); |
| 1614 | |
| 1615 | return GEN_OPCODE16 (); |
| 1616 | } |
| 1617 | |
| 1618 | INSTR_T |
| 1619 | bfin_gen_brcc (int T, int B, Expr_Node * poffset) |
| 1620 | { |
| 1621 | int offset; |
| 1622 | INIT (BRCC); |
| 1623 | |
| 1624 | ASSIGN (T); |
| 1625 | ASSIGN (B); |
| 1626 | offset = ((EXPR_VALUE (poffset) >> 1)); |
| 1627 | ASSIGN (offset); |
| 1628 | return conscode (gencode (c_code.opcode), Expr_Node_Gen_Reloc (poffset, BFD_RELOC_BFIN_10_PCREL)); |
| 1629 | } |
| 1630 | |
| 1631 | INSTR_T |
| 1632 | bfin_gen_ujump (Expr_Node * poffset) |
| 1633 | { |
| 1634 | int offset; |
| 1635 | INIT (UJump); |
| 1636 | |
| 1637 | offset = ((EXPR_VALUE (poffset) >> 1)); |
| 1638 | ASSIGN (offset); |
| 1639 | |
| 1640 | return conscode (gencode (c_code.opcode), |
| 1641 | Expr_Node_Gen_Reloc ( |
| 1642 | poffset, BFD_RELOC_BFIN_12_PCREL_JUMP_S)); |
| 1643 | } |
| 1644 | |
| 1645 | INSTR_T |
| 1646 | bfin_gen_alu2op (REG_T dst, REG_T src, int opc) |
| 1647 | { |
| 1648 | INIT (ALU2op); |
| 1649 | |
| 1650 | ASSIGN_R (dst); |
| 1651 | ASSIGN_R (src); |
| 1652 | ASSIGN (opc); |
| 1653 | |
| 1654 | return GEN_OPCODE16 (); |
| 1655 | } |
| 1656 | |
| 1657 | INSTR_T |
| 1658 | bfin_gen_compi2opd (REG_T dst, int src, int op) |
| 1659 | { |
| 1660 | INIT (COMPI2opD); |
| 1661 | |
| 1662 | ASSIGN_R (dst); |
| 1663 | ASSIGN (src); |
| 1664 | ASSIGN (op); |
| 1665 | |
| 1666 | return GEN_OPCODE16 (); |
| 1667 | } |
| 1668 | |
| 1669 | INSTR_T |
| 1670 | bfin_gen_compi2opp (REG_T dst, int src, int op) |
| 1671 | { |
| 1672 | INIT (COMPI2opP); |
| 1673 | |
| 1674 | ASSIGN_R (dst); |
| 1675 | ASSIGN (src); |
| 1676 | ASSIGN (op); |
| 1677 | |
| 1678 | return GEN_OPCODE16 (); |
| 1679 | } |
| 1680 | |
| 1681 | INSTR_T |
| 1682 | bfin_gen_dagmodik (REG_T i, int op) |
| 1683 | { |
| 1684 | INIT (DagMODik); |
| 1685 | |
| 1686 | ASSIGN_R (i); |
| 1687 | ASSIGN (op); |
| 1688 | |
| 1689 | return GEN_OPCODE16 (); |
| 1690 | } |
| 1691 | |
| 1692 | INSTR_T |
| 1693 | bfin_gen_dagmodim (REG_T i, REG_T m, int op, int br) |
| 1694 | { |
| 1695 | INIT (DagMODim); |
| 1696 | |
| 1697 | ASSIGN_R (i); |
| 1698 | ASSIGN_R (m); |
| 1699 | ASSIGN (op); |
| 1700 | ASSIGN (br); |
| 1701 | |
| 1702 | return GEN_OPCODE16 (); |
| 1703 | } |
| 1704 | |
| 1705 | INSTR_T |
| 1706 | bfin_gen_ptr2op (REG_T dst, REG_T src, int opc) |
| 1707 | { |
| 1708 | INIT (PTR2op); |
| 1709 | |
| 1710 | ASSIGN_R (dst); |
| 1711 | ASSIGN_R (src); |
| 1712 | ASSIGN (opc); |
| 1713 | |
| 1714 | return GEN_OPCODE16 (); |
| 1715 | } |
| 1716 | |
| 1717 | INSTR_T |
| 1718 | bfin_gen_comp3op (REG_T src0, REG_T src1, REG_T dst, int opc) |
| 1719 | { |
| 1720 | INIT (COMP3op); |
| 1721 | |
| 1722 | ASSIGN_R (src0); |
| 1723 | ASSIGN_R (src1); |
| 1724 | ASSIGN_R (dst); |
| 1725 | ASSIGN (opc); |
| 1726 | |
| 1727 | return GEN_OPCODE16 (); |
| 1728 | } |
| 1729 | |
| 1730 | INSTR_T |
| 1731 | bfin_gen_ccflag (REG_T x, int y, int opc, int I, int G) |
| 1732 | { |
| 1733 | INIT (CCflag); |
| 1734 | |
| 1735 | ASSIGN_R (x); |
| 1736 | ASSIGN (y); |
| 1737 | ASSIGN (opc); |
| 1738 | ASSIGN (I); |
| 1739 | ASSIGN (G); |
| 1740 | |
| 1741 | return GEN_OPCODE16 (); |
| 1742 | } |
| 1743 | |
| 1744 | INSTR_T |
| 1745 | bfin_gen_ccmv (REG_T src, REG_T dst, int T) |
| 1746 | { |
| 1747 | int s, d; |
| 1748 | INIT (CCmv); |
| 1749 | |
| 1750 | ASSIGN_R (src); |
| 1751 | ASSIGN_R (dst); |
| 1752 | s = (GROUP (src)); |
| 1753 | ASSIGN (s); |
| 1754 | d = (GROUP (dst)); |
| 1755 | ASSIGN (d); |
| 1756 | ASSIGN (T); |
| 1757 | |
| 1758 | return GEN_OPCODE16 (); |
| 1759 | } |
| 1760 | |
| 1761 | INSTR_T |
| 1762 | bfin_gen_cc2stat (int cbit, int op, int D) |
| 1763 | { |
| 1764 | INIT (CC2stat); |
| 1765 | |
| 1766 | ASSIGN (cbit); |
| 1767 | ASSIGN (op); |
| 1768 | ASSIGN (D); |
| 1769 | |
| 1770 | return GEN_OPCODE16 (); |
| 1771 | } |
| 1772 | |
| 1773 | INSTR_T |
| 1774 | bfin_gen_regmv (REG_T src, REG_T dst) |
| 1775 | { |
| 1776 | int gs, gd; |
| 1777 | INIT (RegMv); |
| 1778 | |
| 1779 | ASSIGN_R (src); |
| 1780 | ASSIGN_R (dst); |
| 1781 | |
| 1782 | gs = (GROUP (src)); |
| 1783 | ASSIGN (gs); |
| 1784 | gd = (GROUP (dst)); |
| 1785 | ASSIGN (gd); |
| 1786 | |
| 1787 | return GEN_OPCODE16 (); |
| 1788 | } |
| 1789 | |
| 1790 | INSTR_T |
| 1791 | bfin_gen_cc2dreg (int op, REG_T reg) |
| 1792 | { |
| 1793 | INIT (CC2dreg); |
| 1794 | |
| 1795 | ASSIGN (op); |
| 1796 | ASSIGN_R (reg); |
| 1797 | |
| 1798 | return GEN_OPCODE16 (); |
| 1799 | } |
| 1800 | |
| 1801 | INSTR_T |
| 1802 | bfin_gen_progctrl (int prgfunc, int poprnd) |
| 1803 | { |
| 1804 | INIT (ProgCtrl); |
| 1805 | |
| 1806 | ASSIGN (prgfunc); |
| 1807 | ASSIGN (poprnd); |
| 1808 | |
| 1809 | return GEN_OPCODE16 (); |
| 1810 | } |
| 1811 | |
| 1812 | INSTR_T |
| 1813 | bfin_gen_cactrl (REG_T reg, int a, int op) |
| 1814 | { |
| 1815 | INIT (CaCTRL); |
| 1816 | |
| 1817 | ASSIGN_R (reg); |
| 1818 | ASSIGN (a); |
| 1819 | ASSIGN (op); |
| 1820 | |
| 1821 | return GEN_OPCODE16 (); |
| 1822 | } |
| 1823 | |
| 1824 | INSTR_T |
| 1825 | bfin_gen_pushpopmultiple (int dr, int pr, int d, int p, int W) |
| 1826 | { |
| 1827 | INIT (PushPopMultiple); |
| 1828 | |
| 1829 | ASSIGN (dr); |
| 1830 | ASSIGN (pr); |
| 1831 | ASSIGN (d); |
| 1832 | ASSIGN (p); |
| 1833 | ASSIGN (W); |
| 1834 | |
| 1835 | return GEN_OPCODE16 (); |
| 1836 | } |
| 1837 | |
| 1838 | INSTR_T |
| 1839 | bfin_gen_pushpopreg (REG_T reg, int W) |
| 1840 | { |
| 1841 | int grp; |
| 1842 | INIT (PushPopReg); |
| 1843 | |
| 1844 | ASSIGN_R (reg); |
| 1845 | grp = (GROUP (reg)); |
| 1846 | ASSIGN (grp); |
| 1847 | ASSIGN (W); |
| 1848 | |
| 1849 | return GEN_OPCODE16 (); |
| 1850 | } |
| 1851 | |
| 1852 | /* Pseudo Debugging Support. */ |
| 1853 | |
| 1854 | INSTR_T |
| 1855 | bfin_gen_pseudodbg (int fn, int reg, int grp) |
| 1856 | { |
| 1857 | INIT (PseudoDbg); |
| 1858 | |
| 1859 | ASSIGN (fn); |
| 1860 | ASSIGN (reg); |
| 1861 | ASSIGN (grp); |
| 1862 | |
| 1863 | return GEN_OPCODE16 (); |
| 1864 | } |
| 1865 | |
| 1866 | INSTR_T |
| 1867 | bfin_gen_pseudodbg_assert (int dbgop, REG_T regtest, int expected) |
| 1868 | { |
| 1869 | INIT (PseudoDbg_Assert); |
| 1870 | |
| 1871 | ASSIGN (dbgop); |
| 1872 | ASSIGN_R (regtest); |
| 1873 | ASSIGN (expected); |
| 1874 | |
| 1875 | return GEN_OPCODE32 (); |
| 1876 | } |
| 1877 | |
| 1878 | /* Multiple instruction generation. */ |
| 1879 | |
| 1880 | INSTR_T |
| 1881 | bfin_gen_multi_instr (INSTR_T dsp32, INSTR_T dsp16_grp1, INSTR_T dsp16_grp2) |
| 1882 | { |
| 1883 | INSTR_T walk; |
| 1884 | |
| 1885 | /* If it's a 0, convert into MNOP. */ |
| 1886 | if (dsp32) |
| 1887 | { |
| 1888 | walk = dsp32->next; |
| 1889 | SET_MULTI_INSTRUCTION_BIT (dsp32); |
| 1890 | } |
| 1891 | else |
| 1892 | { |
| 1893 | dsp32 = gencode (0xc803); |
| 1894 | walk = gencode (0x1800); |
| 1895 | dsp32->next = walk; |
| 1896 | } |
| 1897 | |
| 1898 | if (!dsp16_grp1) |
| 1899 | { |
| 1900 | dsp16_grp1 = gencode (0x0000); |
| 1901 | } |
| 1902 | |
| 1903 | if (!dsp16_grp2) |
| 1904 | { |
| 1905 | dsp16_grp2 = gencode (0x0000); |
| 1906 | } |
| 1907 | |
| 1908 | walk->next = dsp16_grp1; |
| 1909 | dsp16_grp1->next = dsp16_grp2; |
| 1910 | dsp16_grp2->next = NULL_CODE; |
| 1911 | |
| 1912 | return dsp32; |
| 1913 | } |
| 1914 | |
| 1915 | INSTR_T |
| 1916 | bfin_gen_loop (Expr_Node *expr, REG_T reg, int rop, REG_T preg) |
| 1917 | { |
| 1918 | const char *loopsym; |
| 1919 | char *lbeginsym, *lendsym; |
| 1920 | Expr_Node_Value lbeginval, lendval; |
| 1921 | Expr_Node *lbegin, *lend; |
| 1922 | |
| 1923 | loopsym = expr->value.s_value; |
| 1924 | lbeginsym = (char *) xmalloc (strlen (loopsym) + strlen ("__BEGIN") + 1); |
| 1925 | lendsym = (char *) xmalloc (strlen (loopsym) + strlen ("__END") + 1); |
| 1926 | |
| 1927 | lbeginsym[0] = 0; |
| 1928 | lendsym[0] = 0; |
| 1929 | |
| 1930 | strcat (lbeginsym, loopsym); |
| 1931 | strcat (lbeginsym, "__BEGIN"); |
| 1932 | |
| 1933 | strcat (lendsym, loopsym); |
| 1934 | strcat (lendsym, "__END"); |
| 1935 | |
| 1936 | lbeginval.s_value = lbeginsym; |
| 1937 | lendval.s_value = lendsym; |
| 1938 | |
| 1939 | lbegin = Expr_Node_Create (Expr_Node_Reloc, lbeginval, NULL, NULL); |
| 1940 | lend = Expr_Node_Create (Expr_Node_Reloc, lendval, NULL, NULL); |
| 1941 | return bfin_gen_loopsetup(lbegin, reg, rop, lend, preg); |
| 1942 | } |
| 1943 | |
| 1944 | bfd_boolean |
| 1945 | bfin_eol_in_insn (char *line) |
| 1946 | { |
| 1947 | /* Allow a new-line to appear in the middle of a multi-issue instruction. */ |
| 1948 | |
| 1949 | char *temp = line; |
| 1950 | |
| 1951 | if (*line != '\n') |
| 1952 | return FALSE; |
| 1953 | |
| 1954 | /* A semi-colon followed by a newline is always the end of a line. */ |
| 1955 | if (line[-1] == ';') |
| 1956 | return FALSE; |
| 1957 | |
| 1958 | if (line[-1] == '|') |
| 1959 | return TRUE; |
| 1960 | |
| 1961 | /* If the || is on the next line, there might be leading whitespace. */ |
| 1962 | temp++; |
| 1963 | while (*temp == ' ' || *temp == '\t') temp++; |
| 1964 | |
| 1965 | if (*temp == '|') |
| 1966 | return TRUE; |
| 1967 | |
| 1968 | return FALSE; |
| 1969 | } |
| 1970 | |
| 1971 | bfd_boolean |
| 1972 | bfin_name_is_register (char *name) |
| 1973 | { |
| 1974 | int i; |
| 1975 | |
| 1976 | if (*name == '[' || *name == '(') |
| 1977 | return TRUE; |
| 1978 | |
| 1979 | if ((name[0] == 'W' || name[0] == 'w') && name[1] == '[') |
| 1980 | return TRUE; |
| 1981 | |
| 1982 | if ((name[0] == 'B' || name[0] == 'b') && name[1] == '[') |
| 1983 | return TRUE; |
| 1984 | |
| 1985 | for (i=0; bfin_reg_info[i].name != 0; i++) |
| 1986 | { |
| 1987 | if (!strcasecmp (bfin_reg_info[i].name, name)) |
| 1988 | return TRUE; |
| 1989 | } |
| 1990 | return FALSE; |
| 1991 | } |
| 1992 | |
| 1993 | void |
| 1994 | bfin_equals (Expr_Node *sym) |
| 1995 | { |
| 1996 | char *c; |
| 1997 | |
| 1998 | c = input_line_pointer; |
| 1999 | while (*c != '=') |
| 2000 | c--; |
| 2001 | |
| 2002 | input_line_pointer = c; |
| 2003 | |
| 2004 | equals ((char *) sym->value.s_value, 1); |
| 2005 | } |
| 2006 | |
| 2007 | bfd_boolean |
| 2008 | bfin_start_label (char *ptr) |
| 2009 | { |
| 2010 | ptr--; |
| 2011 | while (!ISSPACE (*ptr) && !is_end_of_line[(unsigned char) *ptr]) |
| 2012 | ptr--; |
| 2013 | |
| 2014 | ptr++; |
| 2015 | if (*ptr == '(' || *ptr == '[') |
| 2016 | return FALSE; |
| 2017 | |
| 2018 | return TRUE; |
| 2019 | } |
| 2020 | |
| 2021 | int |
| 2022 | bfin_force_relocation (struct fix *fixp) |
| 2023 | { |
| 2024 | if (fixp->fx_r_type ==BFD_RELOC_BFIN_16_LOW |
| 2025 | || fixp->fx_r_type == BFD_RELOC_BFIN_16_HIGH) |
| 2026 | return TRUE; |
| 2027 | |
| 2028 | return generic_force_reloc (fixp); |
| 2029 | } |