1 /* tc-tilepro.c -- Assemble for a TILEPro chip. 2 Copyright (C) 2011-2016 Free Software Foundation, Inc. 3 4 This file is part of GAS, the GNU Assembler. 5 6 This program 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 of the License, or 9 (at your option) any later version. 10 11 This program 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 this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #include "as.h" 22 #include "struc-symbol.h" 23 #include "subsegs.h" 24 25 #include "elf/tilepro.h" 26 #include "opcode/tilepro.h" 27 28 #include "dwarf2dbg.h" 29 #include "dw2gencfi.h" 30 31 #include "safe-ctype.h" 32 33 34 /* Special registers. */ 35 #define TREG_IDN0 57 36 #define TREG_IDN1 58 37 #define TREG_UDN0 59 38 #define TREG_UDN1 60 39 #define TREG_UDN2 61 40 #define TREG_UDN3 62 41 #define TREG_ZERO 63 42 43 44 /* Generic assembler global variables which must be defined by all 45 targets. */ 46 47 /* Characters which always start a comment. */ 48 const char comment_chars[] = "#"; 49 50 /* Characters which start a comment at the beginning of a line. */ 51 const char line_comment_chars[] = "#"; 52 53 /* Characters which may be used to separate multiple commands on a 54 single line. */ 55 const char line_separator_chars[] = ";"; 56 57 /* Characters which are used to indicate an exponent in a floating 58 point number. */ 59 const char EXP_CHARS[] = "eE"; 60 61 /* Characters which mean that a number is a floating point constant, 62 as in 0d1.0. */ 63 const char FLT_CHARS[] = "rRsSfFdDxXpP"; 64 65 const char *md_shortopts = "VQ:"; 66 67 struct option md_longopts[] = 68 { 69 {NULL, no_argument, NULL, 0} 70 }; 71 72 size_t md_longopts_size = sizeof (md_longopts); 73 74 int 75 md_parse_option (int c, const char *arg ATTRIBUTE_UNUSED) 76 { 77 switch (c) 78 { 79 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section 80 should be emitted or not. FIXME: Not implemented. */ 81 case 'Q': 82 break; 83 84 /* -V: SVR4 argument to print version ID. */ 85 case 'V': 86 print_version_id (); 87 break; 88 89 default: 90 return 0; 91 } 92 93 return 1; 94 } 95 96 void 97 md_show_usage (FILE *stream) 98 { 99 fprintf (stream, _("\ 100 -Q ignored\n\ 101 -V print assembler version number\n")); 102 } 103 104 /* Extra expression types. */ 105 106 #define O_lo16 O_md1 107 #define O_hi16 O_md2 108 #define O_ha16 O_md3 109 #define O_got O_md4 110 #define O_got_lo16 O_md5 111 #define O_got_hi16 O_md6 112 #define O_got_ha16 O_md7 113 #define O_plt O_md8 114 #define O_tls_gd O_md9 115 #define O_tls_gd_lo16 O_md10 116 #define O_tls_gd_hi16 O_md11 117 #define O_tls_gd_ha16 O_md12 118 #define O_tls_ie O_md13 119 #define O_tls_ie_lo16 O_md14 120 #define O_tls_ie_hi16 O_md15 121 #define O_tls_ie_ha16 O_md16 122 #define O_tls_le O_md17 123 #define O_tls_le_lo16 O_md18 124 #define O_tls_le_hi16 O_md19 125 #define O_tls_le_ha16 O_md20 126 #define O_tls_gd_call O_md21 127 #define O_tls_gd_add O_md22 128 #define O_tls_ie_load O_md23 129 130 static struct hash_control *special_operator_hash; 131 132 /* Hash tables for instruction mnemonic lookup. */ 133 static struct hash_control *op_hash; 134 135 /* Hash table for spr lookup. */ 136 static struct hash_control *spr_hash; 137 138 /* True temporarily while parsing an SPR expression. This changes the 139 * namespace to include SPR names. */ 140 static int parsing_spr; 141 142 /* Are we currently inside `{ ... }'? */ 143 static int inside_bundle; 144 145 struct tilepro_instruction 146 { 147 const struct tilepro_opcode *opcode; 148 tilepro_pipeline pipe; 149 expressionS operand_values[TILEPRO_MAX_OPERANDS]; 150 }; 151 152 /* This keeps track of the current bundle being built up. */ 153 static struct tilepro_instruction 154 current_bundle[TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE]; 155 156 /* Index in current_bundle for the next instruction to parse. */ 157 static int current_bundle_index; 158 159 /* Allow 'r63' in addition to 'zero', etc. Normally we disallow this as 160 'zero' is not a real register, so using it accidentally would be a 161 nasty bug. For other registers, such as 'sp', code using multiple names 162 for the same physical register is excessively confusing. 163 164 The '.require_canonical_reg_names' pseudo-op turns this error on, 165 and the '.no_require_canonical_reg_names' pseudo-op turns this off. 166 By default the error is on. */ 167 static int require_canonical_reg_names; 168 169 /* Allow bundles that do undefined or suspicious things like write 170 two different values to the same register at the same time. 171 172 The '.no_allow_suspicious_bundles' pseudo-op turns this error on, 173 and the '.allow_suspicious_bundles' pseudo-op turns this off. */ 174 static int allow_suspicious_bundles; 175 176 177 /* A hash table of main processor registers, mapping each register name 178 to its index. 179 180 Furthermore, if the register number is greater than the number 181 of registers for that processor, the user used an illegal alias 182 for that register (e.g. r63 instead of zero), so we should generate 183 a warning. The attempted register number can be found by clearing 184 NONCANONICAL_REG_NAME_FLAG. */ 185 static struct hash_control *main_reg_hash; 186 187 188 /* We cannot unambiguously store a 0 in a hash table and look it up, 189 so we OR in this flag to every canonical register. */ 190 #define CANONICAL_REG_NAME_FLAG 0x1000 191 192 /* By default we disallow register aliases like r63, but we record 193 them in the hash table in case the .no_require_canonical_reg_names 194 directive is used. Noncanonical names have this value added to them. */ 195 #define NONCANONICAL_REG_NAME_FLAG 0x2000 196 197 /* Discards flags for register hash table entries and returns the 198 reg number. */ 199 #define EXTRACT_REGNO(p) ((p) & 63) 200 201 /* This function is called once, at assembler startup time. It should 202 set up all the tables, etc., that the MD part of the assembler will 203 need. */ 204 void 205 md_begin (void) 206 { 207 const struct tilepro_opcode *op; 208 int i; 209 210 /* Guarantee text section is aligned. */ 211 bfd_set_section_alignment (stdoutput, text_section, 212 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES); 213 214 require_canonical_reg_names = 1; 215 allow_suspicious_bundles = 0; 216 current_bundle_index = 0; 217 inside_bundle = 0; 218 219 /* Initialize special operator hash table. */ 220 special_operator_hash = hash_new (); 221 #define INSERT_SPECIAL_OP(name) \ 222 hash_insert (special_operator_hash, #name, (void *)O_##name) 223 224 INSERT_SPECIAL_OP(lo16); 225 INSERT_SPECIAL_OP(hi16); 226 INSERT_SPECIAL_OP(ha16); 227 INSERT_SPECIAL_OP(got); 228 INSERT_SPECIAL_OP(got_lo16); 229 INSERT_SPECIAL_OP(got_hi16); 230 INSERT_SPECIAL_OP(got_ha16); 231 INSERT_SPECIAL_OP(plt); 232 INSERT_SPECIAL_OP(tls_gd); 233 INSERT_SPECIAL_OP(tls_gd_lo16); 234 INSERT_SPECIAL_OP(tls_gd_hi16); 235 INSERT_SPECIAL_OP(tls_gd_ha16); 236 INSERT_SPECIAL_OP(tls_ie); 237 INSERT_SPECIAL_OP(tls_ie_lo16); 238 INSERT_SPECIAL_OP(tls_ie_hi16); 239 INSERT_SPECIAL_OP(tls_ie_ha16); 240 INSERT_SPECIAL_OP(tls_le); 241 INSERT_SPECIAL_OP(tls_le_lo16); 242 INSERT_SPECIAL_OP(tls_le_hi16); 243 INSERT_SPECIAL_OP(tls_le_ha16); 244 INSERT_SPECIAL_OP(tls_gd_call); 245 INSERT_SPECIAL_OP(tls_gd_add); 246 INSERT_SPECIAL_OP(tls_ie_load); 247 #undef INSERT_SPECIAL_OP 248 249 /* Initialize op_hash hash table. */ 250 op_hash = hash_new (); 251 for (op = &tilepro_opcodes[0]; op->name != NULL; op++) 252 { 253 const char *hash_err = hash_insert (op_hash, op->name, (void *)op); 254 if (hash_err != NULL) 255 { 256 as_fatal (_("Internal Error: Can't hash %s: %s"), 257 op->name, hash_err); 258 } 259 } 260 261 /* Initialize the spr hash table. */ 262 parsing_spr = 0; 263 spr_hash = hash_new (); 264 for (i = 0; i < tilepro_num_sprs; i++) 265 hash_insert (spr_hash, tilepro_sprs[i].name, 266 (void *) &tilepro_sprs[i]); 267 268 /* Set up the main_reg_hash table. We use this instead of 269 * creating a symbol in the register section to avoid ambiguities 270 * with labels that have the same names as registers. */ 271 main_reg_hash = hash_new (); 272 for (i = 0; i < TILEPRO_NUM_REGISTERS; i++) 273 { 274 char buf[64]; 275 276 hash_insert (main_reg_hash, tilepro_register_names[i], 277 (void *) (long)(i | CANONICAL_REG_NAME_FLAG)); 278 279 /* See if we should insert a noncanonical alias, like r63. */ 280 sprintf (buf, "r%d", i); 281 if (strcmp (buf, tilepro_register_names[i]) != 0) 282 hash_insert (main_reg_hash, xstrdup (buf), 283 (void *) (long)(i | NONCANONICAL_REG_NAME_FLAG)); 284 } 285 286 /* Insert obsolete backwards-compatibility register names. */ 287 hash_insert (main_reg_hash, "io0", 288 (void *) (long) (TREG_IDN0 | CANONICAL_REG_NAME_FLAG)); 289 hash_insert (main_reg_hash, "io1", 290 (void *) (long) (TREG_IDN1 | CANONICAL_REG_NAME_FLAG)); 291 hash_insert (main_reg_hash, "us0", 292 (void *) (long) (TREG_UDN0 | CANONICAL_REG_NAME_FLAG)); 293 hash_insert (main_reg_hash, "us1", 294 (void *) (long) (TREG_UDN1 | CANONICAL_REG_NAME_FLAG)); 295 hash_insert (main_reg_hash, "us2", 296 (void *) (long) (TREG_UDN2 | CANONICAL_REG_NAME_FLAG)); 297 hash_insert (main_reg_hash, "us3", 298 (void *) (long) (TREG_UDN3 | CANONICAL_REG_NAME_FLAG)); 299 300 } 301 302 303 #define BUNDLE_TEMPLATE_MASK(p0, p1, p2) \ 304 ((p0) | ((p1) << 8) | ((p2) << 16)) 305 #define BUNDLE_TEMPLATE(p0, p1, p2) \ 306 { { (p0), (p1), (p2) }, \ 307 BUNDLE_TEMPLATE_MASK(1 << (p0), 1 << (p1), (1 << (p2))) \ 308 } 309 310 #define NO_PIPELINE TILEPRO_NUM_PIPELINE_ENCODINGS 311 312 struct bundle_template 313 { 314 tilepro_pipeline pipe[TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE]; 315 unsigned int pipe_mask; 316 }; 317 318 static const struct bundle_template bundle_templates[] = 319 { 320 /* In Y format we must always have something in Y2, since it has 321 * no fnop, so this conveys that Y2 must always be used. */ 322 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y2, NO_PIPELINE), 323 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y2, NO_PIPELINE), 324 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y0, NO_PIPELINE), 325 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y1, NO_PIPELINE), 326 327 /* Y format has three instructions. */ 328 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y2), 329 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y1), 330 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y2), 331 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y0), 332 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y1), 333 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y0), 334 335 /* X format has only two instructions. */ 336 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_X0, TILEPRO_PIPELINE_X1, NO_PIPELINE), 337 BUNDLE_TEMPLATE(TILEPRO_PIPELINE_X1, TILEPRO_PIPELINE_X0, NO_PIPELINE) 338 }; 339 340 341 static void 342 prepend_nop_to_bundle (tilepro_mnemonic mnemonic) 343 { 344 memmove (¤t_bundle[1], ¤t_bundle[0], 345 current_bundle_index * sizeof current_bundle[0]); 346 current_bundle[0].opcode = &tilepro_opcodes[mnemonic]; 347 ++current_bundle_index; 348 } 349 350 351 static tilepro_bundle_bits 352 insert_operand (tilepro_bundle_bits bits, 353 const struct tilepro_operand *operand, 354 int operand_value, 355 const char *file, 356 unsigned lineno) 357 { 358 /* Range-check the immediate. */ 359 int num_bits = operand->num_bits; 360 361 operand_value >>= operand->rightshift; 362 363 if (bfd_check_overflow (operand->is_signed 364 ? complain_overflow_signed 365 : complain_overflow_unsigned, 366 num_bits, 367 0, 368 bfd_arch_bits_per_address (stdoutput), 369 operand_value) 370 != bfd_reloc_ok) 371 { 372 offsetT min, max; 373 if (operand->is_signed) 374 { 375 min = -(1 << (num_bits - 1)); 376 max = (1 << (num_bits - 1)) - 1; 377 } 378 else 379 { 380 min = 0; 381 max = (1 << num_bits) - 1; 382 } 383 as_bad_value_out_of_range (_("operand"), operand_value, min, max, 384 file, lineno); 385 } 386 387 /* Write out the bits for the immediate. */ 388 return bits | operand->insert (operand_value); 389 } 390 391 392 static int 393 apply_special_operator (operatorT op, int num) 394 { 395 switch (op) 396 { 397 case O_lo16: 398 return (signed short)num; 399 400 case O_hi16: 401 return (signed short)(num >> 16); 402 403 case O_ha16: 404 return (signed short)((num + 0x8000) >> 16); 405 406 default: 407 abort (); 408 } 409 } 410 411 412 static tilepro_bundle_bits 413 emit_tilepro_instruction (tilepro_bundle_bits bits, 414 int num_operands, 415 const unsigned char *operands, 416 expressionS *operand_values, 417 char *bundle_start) 418 { 419 int i; 420 421 for (i = 0; i < num_operands; i++) 422 { 423 const struct tilepro_operand *operand = 424 &tilepro_operands[operands[i]]; 425 expressionS *operand_exp = &operand_values[i]; 426 int is_pc_relative = operand->is_pc_relative; 427 428 if (operand_exp->X_op == O_register 429 || (operand_exp->X_op == O_constant && !is_pc_relative)) 430 { 431 /* We know what the bits are right now, so insert them. */ 432 bits = insert_operand (bits, operand, operand_exp->X_add_number, 433 NULL, 0); 434 } 435 else 436 { 437 bfd_reloc_code_real_type reloc = operand->default_reloc; 438 expressionS subexp; 439 int die = 0, use_subexp = 0, require_symbol = 0; 440 fixS *fixP; 441 442 /* Take an expression like hi16(x) and turn it into x with 443 a different reloc type. */ 444 switch (operand_exp->X_op) 445 { 446 #define HANDLE_OP16(suffix) \ 447 switch (reloc) \ 448 { \ 449 case BFD_RELOC_TILEPRO_IMM16_X0: \ 450 reloc = BFD_RELOC_TILEPRO_IMM16_X0_##suffix; \ 451 break; \ 452 case BFD_RELOC_TILEPRO_IMM16_X1: \ 453 reloc = BFD_RELOC_TILEPRO_IMM16_X1_##suffix; \ 454 break; \ 455 default: \ 456 die = 1; \ 457 break; \ 458 } \ 459 use_subexp = 1 460 461 case O_lo16: 462 HANDLE_OP16 (LO); 463 break; 464 465 case O_hi16: 466 HANDLE_OP16 (HI); 467 break; 468 469 case O_ha16: 470 HANDLE_OP16 (HA); 471 break; 472 473 case O_got: 474 HANDLE_OP16 (GOT); 475 require_symbol = 1; 476 break; 477 478 case O_got_lo16: 479 HANDLE_OP16 (GOT_LO); 480 require_symbol = 1; 481 break; 482 483 case O_got_hi16: 484 HANDLE_OP16 (GOT_HI); 485 require_symbol = 1; 486 break; 487 488 case O_got_ha16: 489 HANDLE_OP16 (GOT_HA); 490 require_symbol = 1; 491 break; 492 493 case O_tls_gd: 494 HANDLE_OP16 (TLS_GD); 495 require_symbol = 1; 496 break; 497 498 case O_tls_gd_lo16: 499 HANDLE_OP16 (TLS_GD_LO); 500 require_symbol = 1; 501 break; 502 503 case O_tls_gd_hi16: 504 HANDLE_OP16 (TLS_GD_HI); 505 require_symbol = 1; 506 break; 507 508 case O_tls_gd_ha16: 509 HANDLE_OP16 (TLS_GD_HA); 510 require_symbol = 1; 511 break; 512 513 case O_tls_ie: 514 HANDLE_OP16 (TLS_IE); 515 require_symbol = 1; 516 break; 517 518 case O_tls_ie_lo16: 519 HANDLE_OP16 (TLS_IE_LO); 520 require_symbol = 1; 521 break; 522 523 case O_tls_ie_hi16: 524 HANDLE_OP16 (TLS_IE_HI); 525 require_symbol = 1; 526 break; 527 528 case O_tls_ie_ha16: 529 HANDLE_OP16 (TLS_IE_HA); 530 require_symbol = 1; 531 break; 532 533 case O_tls_le: 534 HANDLE_OP16 (TLS_LE); 535 require_symbol = 1; 536 break; 537 538 case O_tls_le_lo16: 539 HANDLE_OP16 (TLS_LE_LO); 540 require_symbol = 1; 541 break; 542 543 case O_tls_le_hi16: 544 HANDLE_OP16 (TLS_LE_HI); 545 require_symbol = 1; 546 break; 547 548 case O_tls_le_ha16: 549 HANDLE_OP16 (TLS_LE_HA); 550 require_symbol = 1; 551 break; 552 553 #undef HANDLE_OP16 554 555 case O_plt: 556 switch (reloc) 557 { 558 case BFD_RELOC_TILEPRO_JOFFLONG_X1: 559 reloc = BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT; 560 break; 561 default: 562 die = 1; 563 break; 564 } 565 use_subexp = 1; 566 require_symbol = 1; 567 break; 568 569 case O_tls_gd_call: 570 switch (reloc) 571 { 572 case BFD_RELOC_TILEPRO_JOFFLONG_X1: 573 reloc = BFD_RELOC_TILEPRO_TLS_GD_CALL; 574 break; 575 default: 576 die = 1; 577 break; 578 } 579 use_subexp = 1; 580 require_symbol = 1; 581 break; 582 583 case O_tls_gd_add: 584 switch (reloc) 585 { 586 case BFD_RELOC_TILEPRO_IMM8_X0: 587 reloc = BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD; 588 break; 589 case BFD_RELOC_TILEPRO_IMM8_X1: 590 reloc = BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD; 591 break; 592 case BFD_RELOC_TILEPRO_IMM8_Y0: 593 reloc = BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD; 594 break; 595 case BFD_RELOC_TILEPRO_IMM8_Y1: 596 reloc = BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD; 597 break; 598 default: 599 die = 1; 600 break; 601 } 602 use_subexp = 1; 603 require_symbol = 1; 604 break; 605 606 case O_tls_ie_load: 607 switch (reloc) 608 { 609 case BFD_RELOC_TILEPRO_IMM8_X1: 610 reloc = BFD_RELOC_TILEPRO_TLS_IE_LOAD; 611 break; 612 default: 613 die = 1; 614 break; 615 } 616 use_subexp = 1; 617 require_symbol = 1; 618 break; 619 620 default: 621 /* Do nothing. */ 622 break; 623 } 624 625 if (die) 626 { 627 as_bad (_("Invalid operator for operand.")); 628 } 629 else if (use_subexp) 630 { 631 /* Now that we've changed the reloc, change ha16(x) into x, 632 etc. */ 633 634 if (!operand_exp->X_add_symbol->sy_flags.sy_local_symbol 635 && operand_exp->X_add_symbol->sy_value.X_md) 636 { 637 /* HACK: We used X_md to mark this symbol as a fake wrapper 638 around a real expression. To unwrap it, we just grab its 639 value here. */ 640 operand_exp = &operand_exp->X_add_symbol->sy_value; 641 642 if (require_symbol) 643 { 644 /* Look at the expression, and reject it if it's not a 645 plain symbol. */ 646 if (operand_exp->X_op != O_symbol 647 || operand_exp->X_add_number != 0) 648 as_bad (_("Operator may only be applied to symbols.")); 649 } 650 } 651 else 652 { 653 /* The value of this expression is an actual symbol, so 654 turn that into an expression. */ 655 memset (&subexp, 0, sizeof subexp); 656 subexp.X_op = O_symbol; 657 subexp.X_add_symbol = operand_exp->X_add_symbol; 658 operand_exp = &subexp; 659 } 660 } 661 662 /* Create a fixup to handle this later. */ 663 fixP = fix_new_exp (frag_now, 664 bundle_start - frag_now->fr_literal, 665 (operand->num_bits + 7) >> 3, 666 operand_exp, 667 is_pc_relative, 668 reloc); 669 fixP->tc_fix_data = operand; 670 671 /* Don't do overflow checking if we are applying a function like 672 ha16. */ 673 fixP->fx_no_overflow |= use_subexp; 674 } 675 } 676 return bits; 677 } 678 679 680 /* Detects and complains if two instructions in current_bundle write 681 to the same register, either implicitly or explicitly, or if a 682 read-only register is written. */ 683 static void 684 check_illegal_reg_writes (void) 685 { 686 BFD_HOST_U_64_BIT all_regs_written = 0; 687 int j; 688 689 for (j = 0; j < current_bundle_index; j++) 690 { 691 const struct tilepro_instruction *instr = ¤t_bundle[j]; 692 int k; 693 BFD_HOST_U_64_BIT regs = 694 ((BFD_HOST_U_64_BIT)1) << instr->opcode->implicitly_written_register; 695 BFD_HOST_U_64_BIT conflict; 696 697 for (k = 0; k < instr->opcode->num_operands; k++) 698 { 699 const struct tilepro_operand *operand = 700 &tilepro_operands[instr->opcode->operands[instr->pipe][k]]; 701 702 if (operand->is_dest_reg) 703 { 704 int regno = instr->operand_values[k].X_add_number; 705 BFD_HOST_U_64_BIT mask = ((BFD_HOST_U_64_BIT)1) << regno; 706 707 if ((mask & ( (((BFD_HOST_U_64_BIT)1) << TREG_IDN1) 708 | (((BFD_HOST_U_64_BIT)1) << TREG_UDN1) 709 | (((BFD_HOST_U_64_BIT)1) << TREG_UDN2) 710 | (((BFD_HOST_U_64_BIT)1) << TREG_UDN3))) != 0 711 && !allow_suspicious_bundles) 712 { 713 as_bad (_("Writes to register '%s' are not allowed."), 714 tilepro_register_names[regno]); 715 } 716 717 regs |= mask; 718 } 719 } 720 721 /* Writing to the zero register doesn't count. */ 722 regs &= ~(((BFD_HOST_U_64_BIT)1) << TREG_ZERO); 723 724 conflict = all_regs_written & regs; 725 if (conflict != 0 && !allow_suspicious_bundles) 726 { 727 /* Find which register caused the conflict. */ 728 const char *conflicting_reg_name = "???"; 729 int i; 730 731 for (i = 0; i < TILEPRO_NUM_REGISTERS; i++) 732 { 733 if (((conflict >> i) & 1) != 0) 734 { 735 conflicting_reg_name = tilepro_register_names[i]; 736 break; 737 } 738 } 739 740 as_bad (_("Two instructions in the same bundle both write " 741 "to register %s, which is not allowed."), 742 conflicting_reg_name); 743 } 744 745 all_regs_written |= regs; 746 } 747 } 748 749 750 static void 751 tilepro_flush_bundle (void) 752 { 753 unsigned i; 754 int j, addr_mod; 755 unsigned compatible_pipes; 756 const struct bundle_template *match; 757 char *f; 758 759 inside_bundle = 0; 760 761 switch (current_bundle_index) 762 { 763 case 0: 764 /* No instructions. */ 765 return; 766 case 1: 767 if (current_bundle[0].opcode->can_bundle) 768 { 769 /* Simplify later logic by adding an explicit fnop. */ 770 prepend_nop_to_bundle (TILEPRO_OPC_FNOP); 771 } 772 else 773 { 774 /* This instruction cannot be bundled with anything else. 775 Prepend an explicit 'nop', rather than an 'fnop', because 776 fnops can be replaced by later binary-processing tools 777 while nops cannot. */ 778 prepend_nop_to_bundle (TILEPRO_OPC_NOP); 779 } 780 break; 781 default: 782 if (!allow_suspicious_bundles) 783 { 784 /* Make sure all instructions can be bundled with other 785 instructions. */ 786 const struct tilepro_opcode *cannot_bundle = NULL; 787 bfd_boolean seen_non_nop = FALSE; 788 789 for (j = 0; j < current_bundle_index; j++) 790 { 791 const struct tilepro_opcode *op = current_bundle[j].opcode; 792 793 if (!op->can_bundle && cannot_bundle == NULL) 794 cannot_bundle = op; 795 else if (op->mnemonic != TILEPRO_OPC_NOP 796 && op->mnemonic != TILEPRO_OPC_INFO 797 && op->mnemonic != TILEPRO_OPC_INFOL) 798 seen_non_nop = TRUE; 799 } 800 801 if (cannot_bundle != NULL && seen_non_nop) 802 { 803 current_bundle_index = 0; 804 as_bad (_("'%s' may not be bundled with other instructions."), 805 cannot_bundle->name); 806 return; 807 } 808 } 809 break; 810 } 811 812 compatible_pipes = 813 BUNDLE_TEMPLATE_MASK(current_bundle[0].opcode->pipes, 814 current_bundle[1].opcode->pipes, 815 (current_bundle_index == 3 816 ? current_bundle[2].opcode->pipes 817 : (1 << NO_PIPELINE))); 818 819 /* Find a template that works, if any. */ 820 match = NULL; 821 for (i = 0; i < sizeof bundle_templates / sizeof bundle_templates[0]; i++) 822 { 823 const struct bundle_template *b = &bundle_templates[i]; 824 if ((b->pipe_mask & compatible_pipes) == b->pipe_mask) 825 { 826 match = b; 827 break; 828 } 829 } 830 831 if (match == NULL) 832 { 833 current_bundle_index = 0; 834 as_bad (_("Invalid combination of instructions for bundle.")); 835 return; 836 } 837 838 /* If the section seems to have no alignment set yet, go ahead and 839 make it large enough to hold code. */ 840 if (bfd_get_section_alignment (stdoutput, now_seg) == 0) 841 bfd_set_section_alignment (stdoutput, now_seg, 842 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES); 843 844 for (j = 0; j < current_bundle_index; j++) 845 current_bundle[j].pipe = match->pipe[j]; 846 847 if (current_bundle_index == 2 && !tilepro_is_x_pipeline(match->pipe[0])) 848 { 849 /* We are in Y mode with only two instructions, so add an FNOP. */ 850 prepend_nop_to_bundle (TILEPRO_OPC_FNOP); 851 852 /* Figure out what pipe the fnop must be in via arithmetic. 853 * p0 + p1 + p2 must sum to the sum of TILEPRO_PIPELINE_Y[012]. */ 854 current_bundle[0].pipe = 855 (tilepro_pipeline)((TILEPRO_PIPELINE_Y0 856 + TILEPRO_PIPELINE_Y1 857 + TILEPRO_PIPELINE_Y2) - 858 (current_bundle[1].pipe + current_bundle[2].pipe)); 859 } 860 861 check_illegal_reg_writes (); 862 863 f = frag_more (TILEPRO_BUNDLE_SIZE_IN_BYTES); 864 865 /* Check to see if this bundle is at an offset that is a multiple of 8-bytes 866 from the start of the frag. */ 867 addr_mod = frag_now_fix () & (TILEPRO_BUNDLE_ALIGNMENT_IN_BYTES - 1); 868 if (frag_now->has_code && frag_now->insn_addr != addr_mod) 869 as_bad (_("instruction address is not a multiple of 8")); 870 frag_now->insn_addr = addr_mod; 871 frag_now->has_code = 1; 872 873 tilepro_bundle_bits bits = 0; 874 for (j = 0; j < current_bundle_index; j++) 875 { 876 struct tilepro_instruction *instr = ¤t_bundle[j]; 877 tilepro_pipeline pipeline = instr->pipe; 878 const struct tilepro_opcode *opcode = instr->opcode; 879 880 bits |= emit_tilepro_instruction (opcode->fixed_bit_values[pipeline], 881 opcode->num_operands, 882 &opcode->operands[pipeline][0], 883 instr->operand_values, 884 f); 885 } 886 887 number_to_chars_littleendian (f, (unsigned int)bits, 4); 888 number_to_chars_littleendian (f + 4, (unsigned int)(bits >> 32), 4); 889 current_bundle_index = 0; 890 891 /* Emit DWARF2 debugging information. */ 892 dwarf2_emit_insn (TILEPRO_BUNDLE_SIZE_IN_BYTES); 893 } 894 895 896 /* Extend the expression parser to handle hi16(label), etc. 897 as well as SPR names when in the context of parsing an SPR. */ 898 int 899 tilepro_parse_name (char *name, expressionS *e, char *nextcharP) 900 { 901 operatorT op = O_illegal; 902 903 if (parsing_spr) 904 { 905 void *val = hash_find (spr_hash, name); 906 if (val == NULL) 907 return 0; 908 909 memset (e, 0, sizeof *e); 910 e->X_op = O_constant; 911 e->X_add_number = ((const struct tilepro_spr *)val)->number; 912 return 1; 913 } 914 915 if (*nextcharP != '(') 916 { 917 /* hi16, etc. not followed by a paren is just a label with that 918 name. */ 919 return 0; 920 } 921 else 922 { 923 /* Look up the operator in our table. */ 924 void *val = hash_find (special_operator_hash, name); 925 if (val == 0) 926 return 0; 927 op = (operatorT)(long)val; 928 } 929 930 /* Restore old '(' and skip it. */ 931 *input_line_pointer = '('; 932 ++input_line_pointer; 933 934 expression (e); 935 936 if (*input_line_pointer != ')') 937 { 938 as_bad (_("Missing ')'")); 939 *nextcharP = *input_line_pointer; 940 return 0; 941 } 942 /* Skip ')'. */ 943 ++input_line_pointer; 944 945 if (e->X_op == O_register || e->X_op == O_absent) 946 { 947 as_bad (_("Invalid expression.")); 948 e->X_op = O_constant; 949 e->X_add_number = 0; 950 } 951 else 952 { 953 /* Wrap subexpression with a unary operator. */ 954 symbolS *sym = make_expr_symbol (e); 955 956 if (sym != e->X_add_symbol) 957 { 958 /* HACK: mark this symbol as a temporary wrapper around a proper 959 expression, so we can unwrap it later once we have communicated 960 the relocation type. */ 961 sym->sy_value.X_md = 1; 962 } 963 964 memset (e, 0, sizeof *e); 965 e->X_op = op; 966 e->X_add_symbol = sym; 967 e->X_add_number = 0; 968 } 969 970 *nextcharP = *input_line_pointer; 971 return 1; 972 } 973 974 975 /* Parses an expression which must be a register name. */ 976 977 static void 978 parse_reg_expression (expressionS* expression) 979 { 980 /* Zero everything to make sure we don't miss any flags. */ 981 memset (expression, 0, sizeof *expression); 982 983 char *regname; 984 char terminating_char = get_symbol_name (®name); 985 986 void* pval = hash_find (main_reg_hash, regname); 987 988 if (pval == NULL) 989 as_bad (_("Expected register, got '%s'."), regname); 990 991 int regno_and_flags = (int)(size_t)pval; 992 int regno = EXTRACT_REGNO(regno_and_flags); 993 994 if ((regno_and_flags & NONCANONICAL_REG_NAME_FLAG) 995 && require_canonical_reg_names) 996 as_warn (_("Found use of non-canonical register name %s; " 997 "use %s instead."), 998 regname, tilepro_register_names[regno]); 999 1000 /* Restore the old character following the register name. */ 1001 (void) restore_line_pointer (terminating_char); 1002 1003 /* Fill in the expression fields to indicate it's a register. */ 1004 expression->X_op = O_register; 1005 expression->X_add_number = regno; 1006 } 1007 1008 1009 /* Parses and type-checks comma-separated operands in input_line_pointer. */ 1010 static void 1011 parse_operands (const char *opcode_name, 1012 const unsigned char *operands, 1013 int num_operands, 1014 expressionS *operand_values) 1015 { 1016 int i; 1017 1018 memset (operand_values, 0, num_operands * sizeof operand_values[0]); 1019 1020 SKIP_WHITESPACE (); 1021 for (i = 0; i < num_operands; i++) 1022 { 1023 tilepro_operand_type type = tilepro_operands[operands[i]].type; 1024 1025 SKIP_WHITESPACE (); 1026 1027 if (type == TILEPRO_OP_TYPE_REGISTER) 1028 { 1029 parse_reg_expression (&operand_values[i]); 1030 } 1031 else if (*input_line_pointer == '}') 1032 { 1033 operand_values[i].X_op = O_absent; 1034 } 1035 else if (type == TILEPRO_OP_TYPE_SPR) 1036 { 1037 /* Modify the expression parser to add SPRs to the namespace. */ 1038 parsing_spr = 1; 1039 expression (&operand_values[i]); 1040 parsing_spr = 0; 1041 } 1042 else 1043 { 1044 expression (&operand_values[i]); 1045 } 1046 1047 SKIP_WHITESPACE (); 1048 1049 if (i + 1 < num_operands) 1050 { 1051 int separator = (unsigned char)*input_line_pointer++; 1052 1053 if (is_end_of_line[separator] || (separator == '}')) 1054 { 1055 as_bad (_("Too few operands to '%s'."), opcode_name); 1056 return; 1057 } 1058 else if (separator != ',') 1059 { 1060 as_bad (_("Unexpected character '%c' after operand %d to %s."), 1061 (char)separator, i + 1, opcode_name); 1062 return; 1063 } 1064 } 1065 1066 /* Arbitrarily use the first valid pipe to get the operand type, 1067 since they are all the same. */ 1068 switch (tilepro_operands[operands[i]].type) 1069 { 1070 case TILEPRO_OP_TYPE_REGISTER: 1071 /* Handled in parse_reg_expression already. */ 1072 break; 1073 case TILEPRO_OP_TYPE_SPR: 1074 /* Fall through */ 1075 case TILEPRO_OP_TYPE_IMMEDIATE: 1076 /* Fall through */ 1077 case TILEPRO_OP_TYPE_ADDRESS: 1078 if ( operand_values[i].X_op == O_register 1079 || operand_values[i].X_op == O_illegal 1080 || operand_values[i].X_op == O_absent) 1081 as_bad (_("Expected immediate expression")); 1082 break; 1083 default: 1084 abort (); 1085 } 1086 } 1087 1088 if (!is_end_of_line[(unsigned char)*input_line_pointer]) 1089 { 1090 switch (*input_line_pointer) 1091 { 1092 case '}': 1093 if (!inside_bundle) 1094 as_bad (_("Found '}' when not bundling.")); 1095 ++input_line_pointer; 1096 inside_bundle = 0; 1097 demand_empty_rest_of_line (); 1098 break; 1099 1100 case ',': 1101 as_bad (_("Too many operands")); 1102 break; 1103 1104 default: 1105 /* Use default error for unrecognized garbage. */ 1106 demand_empty_rest_of_line (); 1107 break; 1108 } 1109 } 1110 } 1111 1112 1113 /* This is the guts of the machine-dependent assembler. STR points to a 1114 machine dependent instruction. This function is supposed to emit 1115 the frags/bytes it assembles to. */ 1116 void 1117 md_assemble (char *str) 1118 { 1119 char old_char; 1120 size_t opname_len; 1121 char *old_input_line_pointer; 1122 const struct tilepro_opcode *op; 1123 int first_pipe; 1124 1125 /* Split off the opcode and look it up. */ 1126 opname_len = strcspn (str, " {}"); 1127 old_char = str[opname_len]; 1128 str[opname_len] = '\0'; 1129 1130 op = hash_find(op_hash, str); 1131 str[opname_len] = old_char; 1132 if (op == NULL) 1133 { 1134 as_bad (_("Unknown opcode `%.*s'."), (int)opname_len, str); 1135 return; 1136 } 1137 1138 /* Prepare to parse the operands. */ 1139 old_input_line_pointer = input_line_pointer; 1140 input_line_pointer = str + opname_len; 1141 SKIP_WHITESPACE (); 1142 1143 if (current_bundle_index == TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE) 1144 { 1145 as_bad (_("Too many instructions for bundle.")); 1146 tilepro_flush_bundle (); 1147 } 1148 1149 /* Make sure we have room for the upcoming bundle before we 1150 create any fixups. Otherwise if we have to switch to a new 1151 frag the fixup dot_value fields will be wrong. */ 1152 frag_grow (TILEPRO_BUNDLE_SIZE_IN_BYTES); 1153 1154 /* Find a valid pipe for this opcode. */ 1155 for (first_pipe = 0; (op->pipes & (1 << first_pipe)) == 0; first_pipe++) 1156 ; 1157 1158 /* Call the function that assembles this instruction. */ 1159 current_bundle[current_bundle_index].opcode = op; 1160 parse_operands (op->name, 1161 &op->operands[first_pipe][0], 1162 op->num_operands, 1163 current_bundle[current_bundle_index].operand_values); 1164 ++current_bundle_index; 1165 1166 /* Restore the saved value of input_line_pointer. */ 1167 input_line_pointer = old_input_line_pointer; 1168 1169 /* If we weren't inside curly braces, go ahead and emit 1170 this lone instruction as a bundle right now. */ 1171 if (!inside_bundle) 1172 tilepro_flush_bundle (); 1173 } 1174 1175 static void 1176 s_require_canonical_reg_names (int require) 1177 { 1178 demand_empty_rest_of_line (); 1179 require_canonical_reg_names = require; 1180 } 1181 1182 static void 1183 s_allow_suspicious_bundles (int allow) 1184 { 1185 demand_empty_rest_of_line (); 1186 allow_suspicious_bundles = allow; 1187 } 1188 1189 const pseudo_typeS md_pseudo_table[] = 1190 { 1191 {"align", s_align_bytes, 0}, /* Defaulting is invalid (0). */ 1192 {"word", cons, 4}, 1193 {"require_canonical_reg_names", s_require_canonical_reg_names, 1 }, 1194 {"no_require_canonical_reg_names", s_require_canonical_reg_names, 0 }, 1195 {"allow_suspicious_bundles", s_allow_suspicious_bundles, 1 }, 1196 {"no_allow_suspicious_bundles", s_allow_suspicious_bundles, 0 }, 1197 { NULL, 0, 0 } 1198 }; 1199 1200 /* Equal to MAX_PRECISION in atof-ieee.c */ 1201 #define MAX_LITTLENUMS 6 1202 1203 /* Turn the string pointed to by litP into a floating point constant 1204 of type TYPE, and emit the appropriate bytes. The number of 1205 LITTLENUMS emitted is stored in *SIZEP. An error message is 1206 returned, or NULL on OK. */ 1207 1208 const char * 1209 md_atof (int type, char *litP, int *sizeP) 1210 { 1211 int prec; 1212 LITTLENUM_TYPE words[MAX_LITTLENUMS]; 1213 LITTLENUM_TYPE *wordP; 1214 char *t; 1215 1216 switch (type) 1217 { 1218 case 'f': 1219 case 'F': 1220 prec = 2; 1221 break; 1222 1223 case 'd': 1224 case 'D': 1225 prec = 4; 1226 break; 1227 1228 default: 1229 *sizeP = 0; 1230 return _("Bad call to md_atof ()"); 1231 } 1232 t = atof_ieee (input_line_pointer, type, words); 1233 if (t) 1234 input_line_pointer = t; 1235 1236 *sizeP = prec * sizeof (LITTLENUM_TYPE); 1237 /* This loops outputs the LITTLENUMs in REVERSE order; in accord with 1238 the bigendian 386. */ 1239 for (wordP = words + prec - 1; prec--;) 1240 { 1241 md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE)); 1242 litP += sizeof (LITTLENUM_TYPE); 1243 } 1244 return 0; 1245 } 1246 1247 1248 /* We have no need to default values of symbols. */ 1249 1250 symbolS * 1251 md_undefined_symbol (char *name ATTRIBUTE_UNUSED) 1252 { 1253 return NULL; 1254 } 1255 1256 1257 void 1258 tilepro_cons_fix_new (fragS *frag, 1259 int where, 1260 int nbytes, 1261 expressionS *exp) 1262 { 1263 expressionS subexp; 1264 bfd_reloc_code_real_type reloc = BFD_RELOC_NONE; 1265 int no_overflow = 0; 1266 fixS *fixP; 1267 1268 /* See if it's one of our special functions. */ 1269 switch (exp->X_op) 1270 { 1271 case O_lo16: 1272 reloc = BFD_RELOC_LO16; 1273 no_overflow = 1; 1274 break; 1275 case O_hi16: 1276 reloc = BFD_RELOC_HI16; 1277 no_overflow = 1; 1278 break; 1279 case O_ha16: 1280 reloc = BFD_RELOC_HI16_S; 1281 no_overflow = 1; 1282 break; 1283 1284 default: 1285 /* Do nothing. */ 1286 break; 1287 } 1288 1289 if (reloc != BFD_RELOC_NONE) 1290 { 1291 if (nbytes != 2) 1292 { 1293 as_bad (_("This operator only produces two byte values.")); 1294 nbytes = 2; 1295 } 1296 1297 memset (&subexp, 0, sizeof subexp); 1298 subexp.X_op = O_symbol; 1299 subexp.X_add_symbol = exp->X_add_symbol; 1300 exp = &subexp; 1301 } 1302 else 1303 { 1304 switch (nbytes) 1305 { 1306 case 1: 1307 reloc = BFD_RELOC_8; 1308 break; 1309 case 2: 1310 reloc = BFD_RELOC_16; 1311 break; 1312 case 4: 1313 reloc = BFD_RELOC_32; 1314 break; 1315 case 8: 1316 reloc = BFD_RELOC_64; 1317 break; 1318 default: 1319 as_bad (_("unsupported BFD relocation size %d"), nbytes); 1320 reloc = BFD_RELOC_32; 1321 break; 1322 } 1323 } 1324 1325 fixP = fix_new_exp (frag, where, nbytes, exp, 0, reloc); 1326 fixP->tc_fix_data = NULL; 1327 fixP->fx_no_overflow |= no_overflow; 1328 } 1329 1330 1331 void 1332 md_apply_fix (fixS *fixP, valueT * valP, segT seg ATTRIBUTE_UNUSED) 1333 { 1334 const struct tilepro_operand *operand; 1335 valueT value = *valP; 1336 char *p; 1337 1338 /* Leave these for the linker. */ 1339 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT 1340 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) 1341 return; 1342 1343 if (fixP->fx_subsy != (symbolS *) NULL) 1344 { 1345 /* We can't actually support subtracting a symbol. */ 1346 as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex")); 1347 } 1348 1349 /* Correct relocation types for pc-relativeness. */ 1350 switch (fixP->fx_r_type) 1351 { 1352 #define FIX_PCREL(rtype) \ 1353 case rtype: \ 1354 if (fixP->fx_pcrel) \ 1355 fixP->fx_r_type = rtype##_PCREL; \ 1356 break; \ 1357 \ 1358 case rtype##_PCREL: \ 1359 if (!fixP->fx_pcrel) \ 1360 fixP->fx_r_type = rtype; \ 1361 break 1362 1363 FIX_PCREL (BFD_RELOC_8); 1364 FIX_PCREL (BFD_RELOC_16); 1365 FIX_PCREL (BFD_RELOC_32); 1366 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0); 1367 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1); 1368 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0_LO); 1369 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1_LO); 1370 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0_HI); 1371 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1_HI); 1372 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0_HA); 1373 FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1_HA); 1374 1375 #undef FIX_PCREL 1376 1377 default: 1378 /* Do nothing */ 1379 break; 1380 } 1381 1382 if (fixP->fx_addsy != NULL) 1383 { 1384 #ifdef OBJ_ELF 1385 switch (fixP->fx_r_type) 1386 { 1387 case BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD: 1388 case BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD: 1389 case BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD: 1390 case BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD: 1391 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD: 1392 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD: 1393 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO: 1394 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO: 1395 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI: 1396 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI: 1397 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA: 1398 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA: 1399 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE: 1400 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE: 1401 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO: 1402 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO: 1403 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI: 1404 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI: 1405 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA: 1406 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA: 1407 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE: 1408 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE: 1409 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO: 1410 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO: 1411 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI: 1412 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI: 1413 case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA: 1414 case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA: 1415 case BFD_RELOC_TILEPRO_TLS_GD_CALL: 1416 case BFD_RELOC_TILEPRO_TLS_IE_LOAD: 1417 case BFD_RELOC_TILEPRO_TLS_DTPMOD32: 1418 case BFD_RELOC_TILEPRO_TLS_DTPOFF32: 1419 case BFD_RELOC_TILEPRO_TLS_TPOFF32: 1420 S_SET_THREAD_LOCAL (fixP->fx_addsy); 1421 break; 1422 1423 default: 1424 /* Do nothing */ 1425 break; 1426 } 1427 #endif 1428 return; 1429 } 1430 1431 /* Apply lo16, hi16, ha16, etc. munging. */ 1432 switch (fixP->fx_r_type) 1433 { 1434 case BFD_RELOC_LO16: 1435 case BFD_RELOC_TILEPRO_IMM16_X0_LO: 1436 case BFD_RELOC_TILEPRO_IMM16_X1_LO: 1437 case BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL: 1438 case BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL: 1439 *valP = value = apply_special_operator (O_lo16, value); 1440 break; 1441 1442 case BFD_RELOC_HI16: 1443 case BFD_RELOC_TILEPRO_IMM16_X0_HI: 1444 case BFD_RELOC_TILEPRO_IMM16_X1_HI: 1445 case BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL: 1446 case BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL: 1447 *valP = value = apply_special_operator (O_hi16, value); 1448 break; 1449 1450 case BFD_RELOC_HI16_S: 1451 case BFD_RELOC_TILEPRO_IMM16_X0_HA: 1452 case BFD_RELOC_TILEPRO_IMM16_X1_HA: 1453 case BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL: 1454 case BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL: 1455 *valP = value = apply_special_operator (O_ha16, value); 1456 break; 1457 1458 default: 1459 /* Do nothing */ 1460 break; 1461 } 1462 1463 p = fixP->fx_frag->fr_literal + fixP->fx_where; 1464 1465 operand = fixP->tc_fix_data; 1466 if (operand != NULL) 1467 { 1468 /* It's an instruction operand. */ 1469 tilepro_bundle_bits bits = 1470 insert_operand (0, operand, value, fixP->fx_file, fixP->fx_line); 1471 1472 /* Note that we might either be writing out bits for a bundle or a 1473 static network instruction, which are different sizes, so it's 1474 important to stop touching memory once we run out of bits. ORing in 1475 values is OK since we know the existing bits for this operand are 1476 zero. */ 1477 for (; bits != 0; bits >>= 8) 1478 *p++ |= (char)bits; 1479 } 1480 else 1481 { 1482 /* Some other kind of relocation. */ 1483 switch (fixP->fx_r_type) 1484 { 1485 case BFD_RELOC_8: 1486 case BFD_RELOC_8_PCREL: 1487 md_number_to_chars (p, value, 1); 1488 break; 1489 1490 case BFD_RELOC_16: 1491 case BFD_RELOC_16_PCREL: 1492 md_number_to_chars (p, value, 2); 1493 break; 1494 1495 case BFD_RELOC_32: 1496 case BFD_RELOC_32_PCREL: 1497 md_number_to_chars (p, value, 4); 1498 break; 1499 1500 default: 1501 /* Leave it for the linker. */ 1502 return; 1503 } 1504 } 1505 1506 fixP->fx_done = 1; 1507 } 1508 1509 1510 /* Generate the BFD reloc to be stuck in the object file from the 1511 fixup used internally in the assembler. */ 1512 1513 arelent * 1514 tc_gen_reloc (asection *sec ATTRIBUTE_UNUSED, fixS *fixp) 1515 { 1516 arelent *reloc; 1517 1518 reloc = XNEW (arelent); 1519 reloc->sym_ptr_ptr = XNEW (asymbol *); 1520 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); 1521 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; 1522 1523 /* Make sure none of our internal relocations make it this far. 1524 They'd better have been fully resolved by this point. */ 1525 gas_assert ((int) fixp->fx_r_type > 0); 1526 1527 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); 1528 if (reloc->howto == NULL) 1529 { 1530 as_bad_where (fixp->fx_file, fixp->fx_line, 1531 _("cannot represent `%s' relocation in object file"), 1532 bfd_get_reloc_code_name (fixp->fx_r_type)); 1533 return NULL; 1534 } 1535 1536 if (!fixp->fx_pcrel != !reloc->howto->pc_relative) 1537 { 1538 as_fatal (_("internal error? cannot generate `%s' relocation (%d, %d)"), 1539 bfd_get_reloc_code_name (fixp->fx_r_type), 1540 fixp->fx_pcrel, reloc->howto->pc_relative); 1541 } 1542 gas_assert (!fixp->fx_pcrel == !reloc->howto->pc_relative); 1543 1544 reloc->addend = fixp->fx_offset; 1545 1546 return reloc; 1547 } 1548 1549 1550 /* The location from which a PC relative jump should be calculated, 1551 given a PC relative reloc. */ 1552 1553 long 1554 md_pcrel_from (fixS *fixP) 1555 { 1556 return fixP->fx_frag->fr_address + fixP->fx_where; 1557 } 1558 1559 1560 /* Return 1 if it's OK to adjust a reloc by replacing the symbol with 1561 a section symbol plus some offset. */ 1562 int 1563 tilepro_fix_adjustable (fixS *fix) 1564 { 1565 /* Prevent all adjustments to global symbols */ 1566 if (S_IS_EXTERNAL (fix->fx_addsy) || S_IS_WEAK (fix->fx_addsy)) 1567 return 0; 1568 1569 return 1; 1570 } 1571 1572 1573 int 1574 tilepro_unrecognized_line (int ch) 1575 { 1576 switch (ch) 1577 { 1578 case '{': 1579 if (inside_bundle) 1580 { 1581 as_bad (_("Found '{' when already bundling.")); 1582 } 1583 else 1584 { 1585 inside_bundle = 1; 1586 current_bundle_index = 0; 1587 } 1588 return 1; 1589 1590 case '}': 1591 if (!inside_bundle) 1592 { 1593 as_bad (_("Found '}' when not bundling.")); 1594 } 1595 else 1596 { 1597 tilepro_flush_bundle (); 1598 } 1599 1600 /* Allow '{' to follow on the same line. We also allow ";;", but that 1601 happens automatically because ';' is an end of line marker. */ 1602 SKIP_WHITESPACE (); 1603 if (input_line_pointer[0] == '{') 1604 { 1605 input_line_pointer++; 1606 return tilepro_unrecognized_line ('{'); 1607 } 1608 1609 demand_empty_rest_of_line (); 1610 return 1; 1611 1612 default: 1613 break; 1614 } 1615 1616 /* Not a valid line. */ 1617 return 0; 1618 } 1619 1620 1621 /* This is called from HANDLE_ALIGN in write.c. Fill in the contents 1622 of an rs_align_code fragment. */ 1623 1624 void 1625 tilepro_handle_align (fragS *fragp) 1626 { 1627 int bytes, fix; 1628 char *p; 1629 1630 if (fragp->fr_type != rs_align_code) 1631 return; 1632 1633 bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; 1634 p = fragp->fr_literal + fragp->fr_fix; 1635 fix = 0; 1636 1637 /* Determine the bits for NOP. */ 1638 const struct tilepro_opcode *nop_opcode = 1639 &tilepro_opcodes[TILEPRO_OPC_NOP]; 1640 tilepro_bundle_bits nop = 1641 ( nop_opcode->fixed_bit_values[TILEPRO_PIPELINE_X0] 1642 | nop_opcode->fixed_bit_values[TILEPRO_PIPELINE_X1]); 1643 1644 if ((bytes & (TILEPRO_BUNDLE_SIZE_IN_BYTES - 1)) != 0) 1645 { 1646 fix = bytes & (TILEPRO_BUNDLE_SIZE_IN_BYTES - 1); 1647 memset (p, 0, fix); 1648 p += fix; 1649 bytes -= fix; 1650 } 1651 1652 number_to_chars_littleendian (p, (unsigned int)nop, 4); 1653 number_to_chars_littleendian (p + 4, (unsigned int)(nop >> 32), 4); 1654 fragp->fr_fix += fix; 1655 fragp->fr_var = TILEPRO_BUNDLE_SIZE_IN_BYTES; 1656 } 1657 1658 /* Standard calling conventions leave the CFA at SP on entry. */ 1659 void 1660 tilepro_cfi_frame_initial_instructions (void) 1661 { 1662 cfi_add_CFA_def_cfa_register (54); 1663 } 1664 1665 int 1666 tc_tilepro_regname_to_dw2regnum (char *regname) 1667 { 1668 int i; 1669 1670 for (i = 0; i < TILEPRO_NUM_REGISTERS; i++) 1671 { 1672 if (!strcmp (regname, tilepro_register_names[i])) 1673 return i; 1674 } 1675 1676 return -1; 1677 } 1678
