src/gallium/auxiliary/tgsi/tgsi_text.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "util/u_debug.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_prim.h"
  31 #include "pipe/p_defines.h"
  32 #include "util/u_inlines.h"
  33 #include "tgsi_text.h"
  34 #include "tgsi_build.h"
  35 #include "tgsi_info.h"
  36 #include "tgsi_parse.h"
  37 #include "tgsi_sanity.h"
  38 #include "tgsi_strings.h"
  39 #include "tgsi_util.h"
  40 #include "tgsi_dump.h"
  41
  42 static boolean is_alpha_underscore( const char *cur )
  43 {
  44    return
  45       (*cur >= 'a' && *cur <= 'z') ||
  46       (*cur >= 'A' && *cur <= 'Z') ||
  47       *cur == '_';
  48 }
  49
  50 static boolean is_digit( const char *cur )
  51 {
  52    return *cur >= '0' && *cur <= '9';
  53 }
  54
  55 static boolean is_digit_alpha_underscore( const char *cur )
  56 {
  57    return is_digit( cur ) || is_alpha_underscore( cur );
  58 }
  59
  60 static char uprcase( char c )
  61 {
  62    if (c >= 'a' && c <= 'z')
  63       return c + 'A' - 'a';
  64    return c;
  65 }
  66
  67 /*
  68  * Ignore case of str1 and assume str1 is already uppercase.
  69  * Return TRUE iff str1 and str2 are equal.
  70  */
  71 static int
  72 streq_nocase_uprcase(const char *str1,
  73                      const char *str2)
  74 {
  75    while (*str1 && *str2) {
  76       if (*str1 != uprcase(*str2))
  77          return FALSE;
  78       str1++;
  79       str2++;
  80    }
  81    return *str1 == 0 && *str2 == 0;
  82 }
  83
  84 /* Return TRUE if both strings match.
  85  * The second string is terminated by zero.
  86  * The pointer to the first string is moved at end of the read word
  87  * on success.
  88  */
  89 static boolean str_match_no_case( const char **pcur, const char *str )
  90 {
  91    const char *cur = *pcur;
  92
  93    while (*str != '\0' && *str == uprcase( *cur )) {
  94       str++;
  95       cur++;
  96    }
  97    if (*str == '\0') {
  98       *pcur = cur;
  99       return TRUE;
 100    }
 101    return FALSE;
 102 }
 103
 104 /* Return TRUE if both strings match.
 105  * The first string is be terminated by a non-digit non-letter non-underscore
 106  * character, the second string is terminated by zero.
 107  * The pointer to the first string is moved at end of the read word
 108  * on success.
 109  */
 110 static boolean str_match_nocase_whole( const char **pcur, const char *str )
 111 {
 112    const char *cur = *pcur;
 113
 114    if (str_match_no_case(&cur, str) &&
 115        !is_digit_alpha_underscore(cur)) {
 116       *pcur = cur;
 117       return TRUE;
 118    }
 119    return FALSE;
 120 }
 121
 122 /* Return the array index that matches starting at *pcur, where the string at
 123  * *pcur is terminated by a non-digit non-letter non-underscore.
 124  * Returns -1 if no match is found.
 125  *
 126  * On success, the pointer to the first string is moved to the end of the read
 127  * word.
 128  */
 129 static int str_match_name_from_array(const char **pcur,
 130                                      const char * const *array,
 131                                      unsigned array_size)
 132 {
 133    for (unsigned j = 0; j < array_size; ++j) {
 134       if (str_match_nocase_whole(pcur, array[j]))
 135          return j;
 136    }
 137    return -1;
 138 }
 139
 140 /* Return the format corresponding to the name at *pcur.
 141  * Returns -1 if there is no format name.
 142  *
 143  * On success, the pointer to the string is moved to the end of the read format
 144  * name.
 145  */
 146 static int str_match_format(const char **pcur)
 147 {
 148    for (unsigned i = 0; i < PIPE_FORMAT_COUNT; i++) {
 149       const struct util_format_description *desc =
 150          util_format_description(i);
 151       if (desc && str_match_nocase_whole(pcur, desc->name)) {
 152          return i;
 153       }
 154    }
 155    return -1;
 156 }
 157
 158 /* Eat zero or more whitespaces.
 159  */
 160 static void eat_opt_white( const char **pcur )
 161 {
 162    while (**pcur == ' ' || **pcur == '\t' || **pcur == '\n')
 163       (*pcur)++;
 164 }
 165
 166 /* Eat one or more whitespaces.
 167  * Return TRUE if at least one whitespace eaten.
 168  */
 169 static boolean eat_white( const char **pcur )
 170 {
 171    const char *cur = *pcur;
 172
 173    eat_opt_white( pcur );
 174    return *pcur > cur;
 175 }
 176
 177 /* Parse unsigned integer.
 178  * No checks for overflow.
 179  */
 180 static boolean parse_uint( const char **pcur, uint *val )
 181 {
 182    const char *cur = *pcur;
 183
 184    if (is_digit( cur )) {
 185       *val = *cur++ - '0';
 186       while (is_digit( cur ))
 187          *val = *val * 10 + *cur++ - '0';
 188       *pcur = cur;
 189       return TRUE;
 190    }
 191    return FALSE;
 192 }
 193
 194 static boolean parse_int( const char **pcur, int *val )
 195 {
 196    const char *cur = *pcur;
 197    int sign = (*cur == '-' ? -1 : 1);
 198
 199    if (*cur == '+' || *cur == '-')
 200       cur++;
 201
 202    if (parse_uint(&cur, (uint *)val)) {
 203       *val *= sign;
 204       *pcur = cur;
 205       return TRUE;
 206    }
 207
 208    return FALSE;
 209 }
 210
 211 static boolean parse_identifier( const char **pcur, char *ret, size_t len )
 212 {
 213    const char *cur = *pcur;
 214    size_t i = 0;
 215    if (is_alpha_underscore( cur )) {
 216       ret[i++] = *cur++;
 217       while (is_alpha_underscore( cur ) || is_digit( cur )) {
 218          if (i == len - 1)
 219             return FALSE;
 220          ret[i++] = *cur++;
 221       }
 222       ret[i++] = '\0';
 223       *pcur = cur;
 224       return TRUE;
 225    }
 226    return FALSE;
 227 }
 228
 229 /* Parse floating point.
 230  */
 231 static boolean parse_float( const char **pcur, float *val )
 232 {
 233    const char *cur = *pcur;
 234    boolean integral_part = FALSE;
 235    boolean fractional_part = FALSE;
 236
 237    if (*cur == '0' && *(cur + 1) == 'x') {
 238       union fi fi;
 239       fi.ui = strtoul(cur, NULL, 16);
 240       *val = fi.f;
 241       cur += 10;
 242       goto out;
 243    }
 244
 245    *val = (float) atof( cur );
 246    if (*cur == '-' || *cur == '+')
 247       cur++;
 248    if (is_digit( cur )) {
 249       cur++;
 250       integral_part = TRUE;
 251       while (is_digit( cur ))
 252          cur++;
 253    }
 254    if (*cur == '.') {
 255       cur++;
 256       if (is_digit( cur )) {
 257          cur++;
 258          fractional_part = TRUE;
 259          while (is_digit( cur ))
 260             cur++;
 261       }
 262    }
 263    if (!integral_part && !fractional_part)
 264       return FALSE;
 265    if (uprcase( *cur ) == 'E') {
 266       cur++;
 267       if (*cur == '-' || *cur == '+')
 268          cur++;
 269       if (is_digit( cur )) {
 270          cur++;
 271          while (is_digit( cur ))
 272             cur++;
 273       }
 274       else
 275          return FALSE;
 276    }
 277
 278 out:
 279    *pcur = cur;
 280    return TRUE;
 281 }
 282
 283 static boolean parse_double( const char **pcur, uint32_t *val0, uint32_t *val1)
 284 {
 285    const char *cur = *pcur;
 286    union {
 287       double dval;
 288       uint32_t uval[2];
 289    } v;
 290
 291    v.dval = strtod(cur, (char**)pcur);
 292    if (*pcur == cur)
 293       return FALSE;
 294
 295    *val0 = v.uval[0];
 296    *val1 = v.uval[1];
 297
 298    return TRUE;
 299 }
 300
 301 static boolean parse_int64( const char **pcur, uint32_t *val0, uint32_t *val1)
 302 {
 303    const char *cur = *pcur;
 304    union {
 305       int64_t i64val;
 306       uint32_t uval[2];
 307    } v;
 308
 309    v.i64val = strtoll(cur, (char**)pcur, 0);
 310    if (*pcur == cur)
 311       return FALSE;
 312
 313    *val0 = v.uval[0];
 314    *val1 = v.uval[1];
 315
 316    return TRUE;
 317 }
 318
 319 static boolean parse_uint64( const char **pcur, uint32_t *val0, uint32_t *val1)
 320 {
 321    const char *cur = *pcur;
 322    union {
 323       uint64_t u64val;
 324       uint32_t uval[2];
 325    } v;
 326
 327    v.u64val = strtoull(cur, (char**)pcur, 0);
 328    if (*pcur == cur)
 329       return FALSE;
 330
 331    *val0 = v.uval[0];
 332    *val1 = v.uval[1];
 333
 334    return TRUE;
 335 }
 336
 337 struct translate_ctx
 338 {
 339    const char *text;
 340    const char *cur;
 341    struct tgsi_token *tokens;
 342    struct tgsi_token *tokens_cur;
 343    struct tgsi_token *tokens_end;
 344    struct tgsi_header *header;
 345    unsigned processor : 4;
 346    unsigned implied_array_size : 6;
 347    unsigned num_immediates;
 348 };
 349
 350 static void report_error( struct translate_ctx *ctx, const char *msg )
 351 {
 352    int line = 1;
 353    int column = 1;
 354    const char *itr = ctx->text;
 355
 356    while (itr != ctx->cur) {
 357       if (*itr == '\n') {
 358          column = 1;
 359          ++line;
 360       }
 361       ++column;
 362       ++itr;
 363    }
 364
 365    debug_printf( "\nTGSI asm error: %s [%d : %d] \n", msg, line, column );
 366 }
 367
 368 /* Parse shader header.
 369  * Return TRUE for one of the following headers.
 370  *    FRAG
 371  *    GEOM
 372  *    VERT
 373  */
 374 static boolean parse_header( struct translate_ctx *ctx )
 375 {
 376    uint processor;
 377
 378    if (str_match_nocase_whole( &ctx->cur, "FRAG" ))
 379       processor = PIPE_SHADER_FRAGMENT;
 380    else if (str_match_nocase_whole( &ctx->cur, "VERT" ))
 381       processor = PIPE_SHADER_VERTEX;
 382    else if (str_match_nocase_whole( &ctx->cur, "GEOM" ))
 383       processor = PIPE_SHADER_GEOMETRY;
 384    else if (str_match_nocase_whole( &ctx->cur, "TESS_CTRL" ))
 385       processor = PIPE_SHADER_TESS_CTRL;
 386    else if (str_match_nocase_whole( &ctx->cur, "TESS_EVAL" ))
 387       processor = PIPE_SHADER_TESS_EVAL;
 388    else if (str_match_nocase_whole( &ctx->cur, "COMP" ))
 389       processor = PIPE_SHADER_COMPUTE;
 390    else {
 391       report_error( ctx, "Unknown header" );
 392       return FALSE;
 393    }
 394
 395    if (ctx->tokens_cur >= ctx->tokens_end)
 396       return FALSE;
 397    ctx->header = (struct tgsi_header *) ctx->tokens_cur++;
 398    *ctx->header = tgsi_build_header();
 399
 400    if (ctx->tokens_cur >= ctx->tokens_end)
 401       return FALSE;
 402    *(struct tgsi_processor *) ctx->tokens_cur++ = tgsi_build_processor( processor, ctx->header );
 403    ctx->processor = processor;
 404
 405    return TRUE;
 406 }
 407
 408 static boolean parse_label( struct translate_ctx *ctx, uint *val )
 409 {
 410    const char *cur = ctx->cur;
 411
 412    if (parse_uint( &cur, val )) {
 413       eat_opt_white( &cur );
 414       if (*cur == ':') {
 415          cur++;
 416          ctx->cur = cur;
 417          return TRUE;
 418       }
 419    }
 420    return FALSE;
 421 }
 422
 423 static boolean
 424 parse_file( const char **pcur, uint *file )
 425 {
 426    uint i;
 427
 428    for (i = 0; i < TGSI_FILE_COUNT; i++) {
 429       const char *cur = *pcur;
 430
 431       if (str_match_nocase_whole( &cur, tgsi_file_name(i) )) {
 432          *pcur = cur;
 433          *file = i;
 434          return TRUE;
 435       }
 436    }
 437    return FALSE;
 438 }
 439
 440 static boolean
 441 parse_opt_writemask(
 442    struct translate_ctx *ctx,
 443    uint *writemask )
 444 {
 445    const char *cur;
 446
 447    cur = ctx->cur;
 448    eat_opt_white( &cur );
 449    if (*cur == '.') {
 450       cur++;
 451       *writemask = TGSI_WRITEMASK_NONE;
 452       eat_opt_white( &cur );
 453       if (uprcase( *cur ) == 'X') {
 454          cur++;
 455          *writemask |= TGSI_WRITEMASK_X;
 456       }
 457       if (uprcase( *cur ) == 'Y') {
 458          cur++;
 459          *writemask |= TGSI_WRITEMASK_Y;
 460       }
 461       if (uprcase( *cur ) == 'Z') {
 462          cur++;
 463          *writemask |= TGSI_WRITEMASK_Z;
 464       }
 465       if (uprcase( *cur ) == 'W') {
 466          cur++;
 467          *writemask |= TGSI_WRITEMASK_W;
 468       }
 469
 470       if (*writemask == TGSI_WRITEMASK_NONE) {
 471          report_error( ctx, "Writemask expected" );
 472          return FALSE;
 473       }
 474
 475       ctx->cur = cur;
 476    }
 477    else {
 478       *writemask = TGSI_WRITEMASK_XYZW;
 479    }
 480    return TRUE;
 481 }
 482
 483
 484 /* <register_file_bracket> ::= <file> `['
 485  */
 486 static boolean
 487 parse_register_file_bracket(
 488    struct translate_ctx *ctx,
 489    uint *file )
 490 {
 491    if (!parse_file( &ctx->cur, file )) {
 492       report_error( ctx, "Unknown register file" );
 493       return FALSE;
 494    }
 495    eat_opt_white( &ctx->cur );
 496    if (*ctx->cur != '[') {
 497       report_error( ctx, "Expected `['" );
 498       return FALSE;
 499    }
 500    ctx->cur++;
 501    return TRUE;
 502 }
 503
 504 /* <register_file_bracket_index> ::= <register_file_bracket> <uint>
 505  */
 506 static boolean
 507 parse_register_file_bracket_index(
 508    struct translate_ctx *ctx,
 509    uint *file,
 510    int *index )
 511 {
 512    uint uindex;
 513
 514    if (!parse_register_file_bracket( ctx, file ))
 515       return FALSE;
 516    eat_opt_white( &ctx->cur );
 517    if (!parse_uint( &ctx->cur, &uindex )) {
 518       report_error( ctx, "Expected literal unsigned integer" );
 519       return FALSE;
 520    }
 521    *index = (int) uindex;
 522    return TRUE;
 523 }
 524
 525 /* Parse simple 1d register operand.
 526  *    <register_dst> ::= <register_file_bracket_index> `]'
 527  */
 528 static boolean
 529 parse_register_1d(struct translate_ctx *ctx,
 530                   uint *file,
 531                   int *index )
 532 {
 533    if (!parse_register_file_bracket_index( ctx, file, index ))
 534       return FALSE;
 535    eat_opt_white( &ctx->cur );
 536    if (*ctx->cur != ']') {
 537       report_error( ctx, "Expected `]'" );
 538       return FALSE;
 539    }
 540    ctx->cur++;
 541    return TRUE;
 542 }
 543
 544 struct parsed_bracket {
 545    int index;
 546
 547    uint ind_file;
 548    int ind_index;
 549    uint ind_comp;
 550    uint ind_array;
 551 };
 552
 553
 554 static boolean
 555 parse_register_bracket(
 556    struct translate_ctx *ctx,
 557    struct parsed_bracket *brackets)
 558 {
 559    const char *cur;
 560    uint uindex;
 561
 562    memset(brackets, 0, sizeof(struct parsed_bracket));
 563
 564    eat_opt_white( &ctx->cur );
 565
 566    cur = ctx->cur;
 567    if (parse_file( &cur, &brackets->ind_file )) {
 568       if (!parse_register_1d( ctx, &brackets->ind_file,
 569                               &brackets->ind_index ))
 570          return FALSE;
 571       eat_opt_white( &ctx->cur );
 572
 573       if (*ctx->cur == '.') {
 574          ctx->cur++;
 575          eat_opt_white(&ctx->cur);
 576
 577          switch (uprcase(*ctx->cur)) {
 578          case 'X':
 579             brackets->ind_comp = TGSI_SWIZZLE_X;
 580             break;
 581          case 'Y':
 582             brackets->ind_comp = TGSI_SWIZZLE_Y;
 583             break;
 584          case 'Z':
 585             brackets->ind_comp = TGSI_SWIZZLE_Z;
 586             break;
 587          case 'W':
 588             brackets->ind_comp = TGSI_SWIZZLE_W;
 589             break;
 590          default:
 591             report_error(ctx, "Expected indirect register swizzle component `x', `y', `z' or `w'");
 592             return FALSE;
 593          }
 594          ctx->cur++;
 595          eat_opt_white(&ctx->cur);
 596       }
 597
 598       if (*ctx->cur == '+' || *ctx->cur == '-')
 599          parse_int( &ctx->cur, &brackets->index );
 600       else
 601          brackets->index = 0;
 602    }
 603    else {
 604       if (!parse_uint( &ctx->cur, &uindex )) {
 605          report_error( ctx, "Expected literal unsigned integer" );
 606          return FALSE;
 607       }
 608       brackets->index = (int) uindex;
 609       brackets->ind_file = TGSI_FILE_NULL;
 610       brackets->ind_index = 0;
 611    }
 612    eat_opt_white( &ctx->cur );
 613    if (*ctx->cur != ']') {
 614       report_error( ctx, "Expected `]'" );
 615       return FALSE;
 616    }
 617    ctx->cur++;
 618    if (*ctx->cur == '(') {
 619       ctx->cur++;
 620       eat_opt_white( &ctx->cur );
 621       if (!parse_uint( &ctx->cur, &brackets->ind_array )) {
 622          report_error( ctx, "Expected literal unsigned integer" );
 623          return FALSE;
 624       }
 625       eat_opt_white( &ctx->cur );
 626       if (*ctx->cur != ')') {
 627          report_error( ctx, "Expected `)'" );
 628          return FALSE;
 629       }
 630       ctx->cur++;
 631    }
 632    return TRUE;
 633 }
 634
 635 static boolean
 636 parse_opt_register_src_bracket(
 637    struct translate_ctx *ctx,
 638    struct parsed_bracket *brackets,
 639    int *parsed_brackets)
 640 {
 641    const char *cur = ctx->cur;
 642
 643    *parsed_brackets = 0;
 644
 645    eat_opt_white( &cur );
 646    if (cur[0] == '[') {
 647       ++cur;
 648       ctx->cur = cur;
 649
 650       if (!parse_register_bracket(ctx, brackets))
 651          return FALSE;
 652
 653       *parsed_brackets = 1;
 654    }
 655
 656    return TRUE;
 657 }
 658
 659
 660 /* Parse source register operand.
 661  *    <register_src> ::= <register_file_bracket_index> `]' |
 662  *                       <register_file_bracket> <register_dst> [`.' (`x' | `y' | `z' | `w')] `]' |
 663  *                       <register_file_bracket> <register_dst> [`.' (`x' | `y' | `z' | `w')] `+' <uint> `]' |
 664  *                       <register_file_bracket> <register_dst> [`.' (`x' | `y' | `z' | `w')] `-' <uint> `]'
 665  */
 666 static boolean
 667 parse_register_src(
 668    struct translate_ctx *ctx,
 669    uint *file,
 670    struct parsed_bracket *brackets)
 671 {
 672    brackets->ind_comp = TGSI_SWIZZLE_X;
 673    if (!parse_register_file_bracket( ctx, file ))
 674       return FALSE;
 675    if (!parse_register_bracket( ctx, brackets ))
 676        return FALSE;
 677
 678    return TRUE;
 679 }
 680
 681 struct parsed_dcl_bracket {
 682    uint first;
 683    uint last;
 684 };
 685
 686 static boolean
 687 parse_register_dcl_bracket(
 688    struct translate_ctx *ctx,
 689    struct parsed_dcl_bracket *bracket)
 690 {
 691    uint uindex;
 692    memset(bracket, 0, sizeof(struct parsed_dcl_bracket));
 693
 694    eat_opt_white( &ctx->cur );
 695
 696    if (!parse_uint( &ctx->cur, &uindex )) {
 697       /* it can be an empty bracket [] which means its range
 698        * is from 0 to some implied size */
 699       if (ctx->cur[0] == ']' && ctx->implied_array_size != 0) {
 700          bracket->first = 0;
 701          bracket->last = ctx->implied_array_size - 1;
 702          goto cleanup;
 703       }
 704       report_error( ctx, "Expected literal unsigned integer" );
 705       return FALSE;
 706    }
 707    bracket->first = uindex;
 708
 709    eat_opt_white( &ctx->cur );
 710
 711    if (ctx->cur[0] == '.' && ctx->cur[1] == '.') {
 712       uint uindex;
 713
 714       ctx->cur += 2;
 715       eat_opt_white( &ctx->cur );
 716       if (!parse_uint( &ctx->cur, &uindex )) {
 717          report_error( ctx, "Expected literal integer" );
 718          return FALSE;
 719       }
 720       bracket->last = (int) uindex;
 721       eat_opt_white( &ctx->cur );
 722    }
 723    else {
 724       bracket->last = bracket->first;
 725    }
 726
 727 cleanup:
 728    if (*ctx->cur != ']') {
 729       report_error( ctx, "Expected `]' or `..'" );
 730       return FALSE;
 731    }
 732    ctx->cur++;
 733    return TRUE;
 734 }
 735
 736 /* Parse register declaration.
 737  *    <register_dcl> ::= <register_file_bracket_index> `]' |
 738  *                       <register_file_bracket_index> `..' <index> `]'
 739  */
 740 static boolean
 741 parse_register_dcl(
 742    struct translate_ctx *ctx,
 743    uint *file,
 744    struct parsed_dcl_bracket *brackets,
 745    int *num_brackets)
 746 {
 747    const char *cur;
 748
 749    *num_brackets = 0;
 750
 751    if (!parse_register_file_bracket( ctx, file ))
 752       return FALSE;
 753    if (!parse_register_dcl_bracket( ctx, &brackets[0] ))
 754       return FALSE;
 755
 756    *num_brackets = 1;
 757
 758    cur = ctx->cur;
 759    eat_opt_white( &cur );
 760
 761    if (cur[0] == '[') {
 762       bool is_in = *file == TGSI_FILE_INPUT;
 763       bool is_out = *file == TGSI_FILE_OUTPUT;
 764
 765       ++cur;
 766       ctx->cur = cur;
 767       if (!parse_register_dcl_bracket( ctx, &brackets[1] ))
 768          return FALSE;
 769       /* for geometry shader we don't really care about
 770        * the first brackets it's always the size of the
 771        * input primitive. so we want to declare just
 772        * the index relevant to the semantics which is in
 773        * the second bracket */
 774
 775       /* tessellation has similar constraints to geometry shader */
 776       if ((ctx->processor == PIPE_SHADER_GEOMETRY && is_in) ||
 777           (ctx->processor == PIPE_SHADER_TESS_EVAL && is_in) ||
 778           (ctx->processor == PIPE_SHADER_TESS_CTRL && (is_in || is_out))) {
 779          brackets[0] = brackets[1];
 780          *num_brackets = 1;
 781       } else {
 782          *num_brackets = 2;
 783       }
 784    }
 785
 786    return TRUE;
 787 }
 788
 789
 790 /* Parse destination register operand.*/
 791 static boolean
 792 parse_register_dst(
 793    struct translate_ctx *ctx,
 794    uint *file,
 795    struct parsed_bracket *brackets)
 796 {
 797    brackets->ind_comp = TGSI_SWIZZLE_X;
 798    if (!parse_register_file_bracket( ctx, file ))
 799       return FALSE;
 800    if (!parse_register_bracket( ctx, brackets ))
 801        return FALSE;
 802
 803    return TRUE;
 804 }
 805
 806 static boolean
 807 parse_dst_operand(
 808    struct translate_ctx *ctx,
 809    struct tgsi_full_dst_register *dst )
 810 {
 811    uint file;
 812    uint writemask;
 813    const char *cur;
 814    struct parsed_bracket bracket[2];
 815    int parsed_opt_brackets;
 816
 817    if (!parse_register_dst( ctx, &file, &bracket[0] ))
 818       return FALSE;
 819    if (!parse_opt_register_src_bracket(ctx, &bracket[1], &parsed_opt_brackets))
 820       return FALSE;
 821
 822    cur = ctx->cur;
 823    eat_opt_white( &cur );
 824
 825    if (!parse_opt_writemask( ctx, &writemask ))
 826       return FALSE;
 827
 828    dst->Register.File = file;
 829    if (parsed_opt_brackets) {
 830       dst->Register.Dimension = 1;
 831       dst->Dimension.Indirect = 0;
 832       dst->Dimension.Dimension = 0;
 833       dst->Dimension.Index = bracket[0].index;
 834
 835       if (bracket[0].ind_file != TGSI_FILE_NULL) {
 836          dst->Dimension.Indirect = 1;
 837          dst->DimIndirect.File = bracket[0].ind_file;
 838          dst->DimIndirect.Index = bracket[0].ind_index;
 839          dst->DimIndirect.Swizzle = bracket[0].ind_comp;
 840          dst->DimIndirect.ArrayID = bracket[0].ind_array;
 841       }
 842       bracket[0] = bracket[1];
 843    }
 844    dst->Register.Index = bracket[0].index;
 845    dst->Register.WriteMask = writemask;
 846    if (bracket[0].ind_file != TGSI_FILE_NULL) {
 847       dst->Register.Indirect = 1;
 848       dst->Indirect.File = bracket[0].ind_file;
 849       dst->Indirect.Index = bracket[0].ind_index;
 850       dst->Indirect.Swizzle = bracket[0].ind_comp;
 851       dst->Indirect.ArrayID = bracket[0].ind_array;
 852    }
 853    return TRUE;
 854 }
 855
 856 static boolean
 857 parse_optional_swizzle(
 858    struct translate_ctx *ctx,
 859    uint *swizzle,
 860    boolean *parsed_swizzle,
 861    int components)
 862 {
 863    const char *cur = ctx->cur;
 864
 865    *parsed_swizzle = FALSE;
 866
 867    eat_opt_white( &cur );
 868    if (*cur == '.') {
 869       int i;
 870
 871       cur++;
 872       eat_opt_white( &cur );
 873       for (i = 0; i < components; i++) {
 874          if (uprcase( *cur ) == 'X')
 875             swizzle[i] = TGSI_SWIZZLE_X;
 876          else if (uprcase( *cur ) == 'Y')
 877             swizzle[i] = TGSI_SWIZZLE_Y;
 878          else if (uprcase( *cur ) == 'Z')
 879             swizzle[i] = TGSI_SWIZZLE_Z;
 880          else if (uprcase( *cur ) == 'W')
 881             swizzle[i] = TGSI_SWIZZLE_W;
 882          else {
 883             report_error( ctx, "Expected register swizzle component `x', `y', `z' or `w'" );
 884             return FALSE;
 885          }
 886          cur++;
 887       }
 888       *parsed_swizzle = TRUE;
 889       ctx->cur = cur;
 890    }
 891    return TRUE;
 892 }
 893
 894 static boolean
 895 parse_src_operand(
 896    struct translate_ctx *ctx,
 897    struct tgsi_full_src_register *src )
 898 {
 899    uint file;
 900    uint swizzle[4];
 901    boolean parsed_swizzle;
 902    struct parsed_bracket bracket[2];
 903    int parsed_opt_brackets;
 904
 905    if (*ctx->cur == '-') {
 906       ctx->cur++;
 907       eat_opt_white( &ctx->cur );
 908       src->Register.Negate = 1;
 909    }
 910
 911    if (*ctx->cur == '|') {
 912       ctx->cur++;
 913       eat_opt_white( &ctx->cur );
 914       src->Register.Absolute = 1;
 915    }
 916
 917    if (!parse_register_src(ctx, &file, &bracket[0]))
 918       return FALSE;
 919    if (!parse_opt_register_src_bracket(ctx, &bracket[1], &parsed_opt_brackets))
 920       return FALSE;
 921
 922    src->Register.File = file;
 923    if (parsed_opt_brackets) {
 924       src->Register.Dimension = 1;
 925       src->Dimension.Indirect = 0;
 926       src->Dimension.Dimension = 0;
 927       src->Dimension.Index = bracket[0].index;
 928       if (bracket[0].ind_file != TGSI_FILE_NULL) {
 929          src->Dimension.Indirect = 1;
 930          src->DimIndirect.File = bracket[0].ind_file;
 931          src->DimIndirect.Index = bracket[0].ind_index;
 932          src->DimIndirect.Swizzle = bracket[0].ind_comp;
 933          src->DimIndirect.ArrayID = bracket[0].ind_array;
 934       }
 935       bracket[0] = bracket[1];
 936    }
 937    src->Register.Index = bracket[0].index;
 938    if (bracket[0].ind_file != TGSI_FILE_NULL) {
 939       src->Register.Indirect = 1;
 940       src->Indirect.File = bracket[0].ind_file;
 941       src->Indirect.Index = bracket[0].ind_index;
 942       src->Indirect.Swizzle = bracket[0].ind_comp;
 943       src->Indirect.ArrayID = bracket[0].ind_array;
 944    }
 945
 946    /* Parse optional swizzle.
 947     */
 948    if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle, 4 )) {
 949       if (parsed_swizzle) {
 950          src->Register.SwizzleX = swizzle[0];
 951          src->Register.SwizzleY = swizzle[1];
 952          src->Register.SwizzleZ = swizzle[2];
 953          src->Register.SwizzleW = swizzle[3];
 954       }
 955    }
 956
 957    if (src->Register.Absolute) {
 958       eat_opt_white( &ctx->cur );
 959       if (*ctx->cur != '|') {
 960          report_error( ctx, "Expected `|'" );
 961          return FALSE;
 962       }
 963       ctx->cur++;
 964    }
 965
 966
 967    return TRUE;
 968 }
 969
 970 static boolean
 971 parse_texoffset_operand(
 972    struct translate_ctx *ctx,
 973    struct tgsi_texture_offset *src )
 974 {
 975    uint file;
 976    uint swizzle[3];
 977    boolean parsed_swizzle;
 978    struct parsed_bracket bracket;
 979
 980    if (!parse_register_src(ctx, &file, &bracket))
 981       return FALSE;
 982
 983    src->File = file;
 984    src->Index = bracket.index;
 985
 986    /* Parse optional swizzle.
 987     */
 988    if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle, 3 )) {
 989       if (parsed_swizzle) {
 990          src->SwizzleX = swizzle[0];
 991          src->SwizzleY = swizzle[1];
 992          src->SwizzleZ = swizzle[2];
 993       }
 994    }
 995
 996    return TRUE;
 997 }
 998
 999 static boolean
1000 match_inst(const char **pcur,
1001            unsigned *saturate,
1002            unsigned *precise,
1003            const struct tgsi_opcode_info *info)
1004 {
1005    const char *cur = *pcur;
1006    const char *mnemonic = tgsi_get_opcode_name(info->opcode);
1007
1008    /* simple case: the whole string matches the instruction name */
1009    if (str_match_nocase_whole(&cur, mnemonic)) {
1010       *pcur = cur;
1011       *saturate = 0;
1012       *precise = 0;
1013       return TRUE;
1014    }
1015
1016    if (str_match_no_case(&cur, mnemonic)) {
1017       /* the instruction has a suffix, figure it out */
1018       if (str_match_no_case(&cur, "_SAT")) {
1019          *pcur = cur;
1020          *saturate = 1;
1021       }
1022
1023       if (str_match_no_case(&cur, "_PRECISE")) {
1024          *pcur = cur;
1025          *precise = 1;
1026       }
1027
1028       if (!is_digit_alpha_underscore(cur))
1029          return TRUE;
1030    }
1031
1032    return FALSE;
1033 }
1034
1035 static boolean
1036 parse_instruction(
1037    struct translate_ctx *ctx,
1038    boolean has_label )
1039 {
1040    int i;
1041    uint saturate = 0;
1042    uint precise = 0;
1043    const struct tgsi_opcode_info *info;
1044    struct tgsi_full_instruction inst;
1045    const char *cur;
1046    uint advance;
1047
1048    inst = tgsi_default_full_instruction();
1049
1050    /* Parse instruction name.
1051     */
1052    eat_opt_white( &ctx->cur );
1053    for (i = 0; i < TGSI_OPCODE_LAST; i++) {
1054       cur = ctx->cur;
1055
1056       info = tgsi_get_opcode_info( i );
1057       if (match_inst(&cur, &saturate, &precise, info)) {
1058          if (info->num_dst + info->num_src + info->is_tex == 0) {
1059             ctx->cur = cur;
1060             break;
1061          }
1062          else if (*cur == '\0' || eat_white( &cur )) {
1063             ctx->cur = cur;
1064             break;
1065          }
1066       }
1067    }
1068    if (i == TGSI_OPCODE_LAST) {
1069       if (has_label)
1070          report_error( ctx, "Unknown opcode" );
1071       else
1072          report_error( ctx, "Expected `DCL', `IMM' or a label" );
1073       return FALSE;
1074    }
1075
1076    inst.Instruction.Opcode = i;
1077    inst.Instruction.Saturate = saturate;
1078    inst.Instruction.Precise = precise;
1079    inst.Instruction.NumDstRegs = info->num_dst;
1080    inst.Instruction.NumSrcRegs = info->num_src;
1081
1082    if (i >= TGSI_OPCODE_SAMPLE && i <= TGSI_OPCODE_GATHER4) {
1083       /*
1084        * These are not considered tex opcodes here (no additional
1085        * target argument) however we're required to set the Texture
1086        * bit so we can set the number of tex offsets.
1087        */
1088       inst.Instruction.Texture = 1;
1089       inst.Texture.Texture = TGSI_TEXTURE_UNKNOWN;
1090    }
1091
1092    if ((i >= TGSI_OPCODE_LOAD && i <= TGSI_OPCODE_ATOMIMAX) ||
1093        i == TGSI_OPCODE_RESQ) {
1094       inst.Instruction.Memory = 1;
1095       inst.Memory.Qualifier = 0;
1096    }
1097
1098    assume(info->num_dst <= TGSI_FULL_MAX_DST_REGISTERS);
1099    assume(info->num_src <= TGSI_FULL_MAX_SRC_REGISTERS);
1100
1101    /* Parse instruction operands.
1102     */
1103    for (i = 0; i < info->num_dst + info->num_src + info->is_tex; i++) {
1104       if (i > 0) {
1105          eat_opt_white( &ctx->cur );
1106          if (*ctx->cur != ',') {
1107             report_error( ctx, "Expected `,'" );
1108             return FALSE;
1109          }
1110          ctx->cur++;
1111          eat_opt_white( &ctx->cur );
1112       }
1113
1114       if (i < info->num_dst) {
1115          if (!parse_dst_operand( ctx, &inst.Dst[i] ))
1116             return FALSE;
1117       }
1118       else if (i < info->num_dst + info->num_src) {
1119          if (!parse_src_operand( ctx, &inst.Src[i - info->num_dst] ))
1120             return FALSE;
1121       }
1122       else {
1123          uint j;
1124
1125          for (j = 0; j < TGSI_TEXTURE_COUNT; j++) {
1126             if (str_match_nocase_whole( &ctx->cur, tgsi_texture_names[j] )) {
1127                inst.Instruction.Texture = 1;
1128                inst.Texture.Texture = j;
1129                break;
1130             }
1131          }
1132          if (j == TGSI_TEXTURE_COUNT) {
1133             report_error( ctx, "Expected texture target" );
1134             return FALSE;
1135          }
1136       }
1137    }
1138
1139    cur = ctx->cur;
1140    eat_opt_white( &cur );
1141    for (i = 0; inst.Instruction.Texture && *cur == ',' && i < TGSI_FULL_MAX_TEX_OFFSETS; i++) {
1142          cur++;
1143          eat_opt_white( &cur );
1144          ctx->cur = cur;
1145          if (!parse_texoffset_operand( ctx, &inst.TexOffsets[i] ))
1146             return FALSE;
1147          cur = ctx->cur;
1148          eat_opt_white( &cur );
1149    }
1150    inst.Texture.NumOffsets = i;
1151
1152    cur = ctx->cur;
1153    eat_opt_white(&cur);
1154
1155    for (; inst.Instruction.Memory && *cur == ',';
1156         ctx->cur = cur, eat_opt_white(&cur)) {
1157       int j;
1158
1159       cur++;
1160       eat_opt_white(&cur);
1161
1162       j = str_match_name_from_array(&cur, tgsi_memory_names,
1163                                     ARRAY_SIZE(tgsi_memory_names));
1164       if (j >= 0) {
1165          inst.Memory.Qualifier |= 1U << j;
1166          continue;
1167       }
1168
1169       j = str_match_name_from_array(&cur, tgsi_texture_names,
1170                                     ARRAY_SIZE(tgsi_texture_names));
1171       if (j >= 0) {
1172          inst.Memory.Texture = j;
1173          continue;
1174       }
1175
1176       j = str_match_format(&cur);
1177       if (j >= 0) {
1178          inst.Memory.Format = j;
1179          continue;
1180       }
1181
1182       ctx->cur = cur;
1183       report_error(ctx, "Expected memory qualifier, texture target, or format\n");
1184       return FALSE;
1185    }
1186
1187    cur = ctx->cur;
1188    eat_opt_white( &cur );
1189    if (info->is_branch && *cur == ':') {
1190       uint target;
1191
1192       cur++;
1193       eat_opt_white( &cur );
1194       if (!parse_uint( &cur, &target )) {
1195          report_error( ctx, "Expected a label" );
1196          return FALSE;
1197       }
1198       inst.Instruction.Label = 1;
1199       inst.Label.Label = target;
1200       ctx->cur = cur;
1201    }
1202
1203    advance = tgsi_build_full_instruction(
1204       &inst,
1205       ctx->tokens_cur,
1206       ctx->header,
1207       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1208    if (advance == 0)
1209       return FALSE;
1210    ctx->tokens_cur += advance;
1211
1212    return TRUE;
1213 }
1214
1215 /* parses a 4-touple of the form {x, y, z, w}
1216  * where x, y, z, w are numbers */
1217 static boolean parse_immediate_data(struct translate_ctx *ctx, unsigned type,
1218                                     union tgsi_immediate_data *values)
1219 {
1220    unsigned i;
1221    int ret;
1222
1223    eat_opt_white( &ctx->cur );
1224    if (*ctx->cur != '{') {
1225       report_error( ctx, "Expected `{'" );
1226       return FALSE;
1227    }
1228    ctx->cur++;
1229    for (i = 0; i < 4; i++) {
1230       eat_opt_white( &ctx->cur );
1231       if (i > 0) {
1232          if (*ctx->cur != ',') {
1233             report_error( ctx, "Expected `,'" );
1234             return FALSE;
1235          }
1236          ctx->cur++;
1237          eat_opt_white( &ctx->cur );
1238       }
1239
1240       switch (type) {
1241       case TGSI_IMM_FLOAT64:
1242          ret = parse_double(&ctx->cur, &values[i].Uint, &values[i+1].Uint);
1243          i++;
1244          break;
1245       case TGSI_IMM_INT64:
1246          ret = parse_int64(&ctx->cur, &values[i].Uint, &values[i+1].Uint);
1247          i++;
1248          break;
1249       case TGSI_IMM_UINT64:
1250          ret = parse_uint64(&ctx->cur, &values[i].Uint, &values[i+1].Uint);
1251          i++;
1252          break;
1253       case TGSI_IMM_FLOAT32:
1254          ret = parse_float(&ctx->cur, &values[i].Float);
1255          break;
1256       case TGSI_IMM_UINT32:
1257          ret = parse_uint(&ctx->cur, &values[i].Uint);
1258          break;
1259       case TGSI_IMM_INT32:
1260          ret = parse_int(&ctx->cur, &values[i].Int);
1261          break;
1262       default:
1263          assert(0);
1264          ret = FALSE;
1265          break;
1266       }
1267
1268       if (!ret) {
1269          report_error( ctx, "Expected immediate constant" );
1270          return FALSE;
1271       }
1272    }
1273    eat_opt_white( &ctx->cur );
1274    if (*ctx->cur != '}') {
1275       report_error( ctx, "Expected `}'" );
1276       return FALSE;
1277    }
1278    ctx->cur++;
1279
1280    return TRUE;
1281 }
1282
1283 static boolean parse_declaration( struct translate_ctx *ctx )
1284 {
1285    struct tgsi_full_declaration decl;
1286    uint file;
1287    struct parsed_dcl_bracket brackets[2];
1288    int num_brackets;
1289    uint writemask;
1290    const char *cur, *cur2;
1291    uint advance;
1292    boolean is_vs_input;
1293
1294    if (!eat_white( &ctx->cur )) {
1295       report_error( ctx, "Syntax error" );
1296       return FALSE;
1297    }
1298    if (!parse_register_dcl( ctx, &file, brackets, &num_brackets))
1299       return FALSE;
1300    if (!parse_opt_writemask( ctx, &writemask ))
1301       return FALSE;
1302
1303    decl = tgsi_default_full_declaration();
1304    decl.Declaration.File = file;
1305    decl.Declaration.UsageMask = writemask;
1306
1307    if (num_brackets == 1) {
1308       decl.Range.First = brackets[0].first;
1309       decl.Range.Last = brackets[0].last;
1310    } else {
1311       decl.Range.First = brackets[1].first;
1312       decl.Range.Last = brackets[1].last;
1313
1314       decl.Declaration.Dimension = 1;
1315       decl.Dim.Index2D = brackets[0].first;
1316    }
1317
1318    is_vs_input = (file == TGSI_FILE_INPUT &&
1319                   ctx->processor == PIPE_SHADER_VERTEX);
1320
1321    cur = ctx->cur;
1322    eat_opt_white( &cur );
1323    if (*cur == ',') {
1324       cur2 = cur;
1325       cur2++;
1326       eat_opt_white( &cur2 );
1327       if (str_match_nocase_whole( &cur2, "ARRAY" )) {
1328          int arrayid;
1329          if (*cur2 != '(') {
1330             report_error( ctx, "Expected `('" );
1331             return FALSE;
1332          }
1333          cur2++;
1334          eat_opt_white( &cur2 );
1335          if (!parse_int( &cur2, &arrayid )) {
1336             report_error( ctx, "Expected `,'" );
1337             return FALSE;
1338          }
1339          eat_opt_white( &cur2 );
1340          if (*cur2 != ')') {
1341             report_error( ctx, "Expected `)'" );
1342             return FALSE;
1343          }
1344          cur2++;
1345          decl.Declaration.Array = 1;
1346          decl.Array.ArrayID = arrayid;
1347          ctx->cur = cur = cur2;
1348       }
1349    }
1350
1351    if (*cur == ',' && !is_vs_input) {
1352       uint i, j;
1353
1354       cur++;
1355       eat_opt_white( &cur );
1356       if (file == TGSI_FILE_IMAGE) {
1357          for (i = 0; i < TGSI_TEXTURE_COUNT; i++) {
1358             if (str_match_nocase_whole(&cur, tgsi_texture_names[i])) {
1359                decl.Image.Resource = i;
1360                break;
1361             }
1362          }
1363          if (i == TGSI_TEXTURE_COUNT) {
1364             report_error(ctx, "Expected texture target");
1365             return FALSE;
1366          }
1367
1368          cur2 = cur;
1369          eat_opt_white(&cur2);
1370          while (*cur2 == ',') {
1371             cur2++;
1372             eat_opt_white(&cur2);
1373             if (str_match_nocase_whole(&cur2, "RAW")) {
1374                decl.Image.Raw = 1;
1375
1376             } else if (str_match_nocase_whole(&cur2, "WR")) {
1377                decl.Image.Writable = 1;
1378
1379             } else {
1380                int format = str_match_format(&cur2);
1381                if (format < 0)
1382                   break;
1383
1384                decl.Image.Format = format;
1385             }
1386             cur = cur2;
1387             eat_opt_white(&cur2);
1388          }
1389
1390          ctx->cur = cur;
1391
1392       } else if (file == TGSI_FILE_SAMPLER_VIEW) {
1393          for (i = 0; i < TGSI_TEXTURE_COUNT; i++) {
1394             if (str_match_nocase_whole(&cur, tgsi_texture_names[i])) {
1395                decl.SamplerView.Resource = i;
1396                break;
1397             }
1398          }
1399          if (i == TGSI_TEXTURE_COUNT) {
1400             report_error(ctx, "Expected texture target");
1401             return FALSE;
1402          }
1403          eat_opt_white( &cur );
1404          if (*cur != ',') {
1405             report_error( ctx, "Expected `,'" );
1406             return FALSE;
1407          }
1408          ++cur;
1409          eat_opt_white( &cur );
1410          for (j = 0; j < 4; ++j) {
1411             for (i = 0; i < TGSI_RETURN_TYPE_COUNT; ++i) {
1412                if (str_match_nocase_whole(&cur, tgsi_return_type_names[i])) {
1413                   switch (j) {
1414                   case 0:
1415                      decl.SamplerView.ReturnTypeX = i;
1416                      break;
1417                   case 1:
1418                      decl.SamplerView.ReturnTypeY = i;
1419                      break;
1420                   case 2:
1421                      decl.SamplerView.ReturnTypeZ = i;
1422                      break;
1423                   case 3:
1424                      decl.SamplerView.ReturnTypeW = i;
1425                      break;
1426                   default:
1427                      assert(0);
1428                   }
1429                   break;
1430                }
1431             }
1432             if (i == TGSI_RETURN_TYPE_COUNT) {
1433                if (j == 0 || j >  2) {
1434                   report_error(ctx, "Expected type name");
1435                   return FALSE;
1436                }
1437                break;
1438             } else {
1439                cur2 = cur;
1440                eat_opt_white( &cur2 );
1441                if (*cur2 == ',') {
1442                   cur2++;
1443                   eat_opt_white( &cur2 );
1444                   cur = cur2;
1445                   continue;
1446                } else
1447                   break;
1448             }
1449          }
1450          if (j < 4) {
1451             decl.SamplerView.ReturnTypeY =
1452                decl.SamplerView.ReturnTypeZ =
1453                decl.SamplerView.ReturnTypeW =
1454                decl.SamplerView.ReturnTypeX;
1455          }
1456          ctx->cur = cur;
1457       } else if (file == TGSI_FILE_BUFFER) {
1458          if (str_match_nocase_whole(&cur, "ATOMIC")) {
1459             decl.Declaration.Atomic = 1;
1460             ctx->cur = cur;
1461          }
1462       } else if (file == TGSI_FILE_MEMORY) {
1463          if (str_match_nocase_whole(&cur, "GLOBAL")) {
1464             /* Note this is a no-op global is the default */
1465             decl.Declaration.MemType = TGSI_MEMORY_TYPE_GLOBAL;
1466             ctx->cur = cur;
1467          } else if (str_match_nocase_whole(&cur, "SHARED")) {
1468             decl.Declaration.MemType = TGSI_MEMORY_TYPE_SHARED;
1469             ctx->cur = cur;
1470          } else if (str_match_nocase_whole(&cur, "PRIVATE")) {
1471             decl.Declaration.MemType = TGSI_MEMORY_TYPE_PRIVATE;
1472             ctx->cur = cur;
1473          } else if (str_match_nocase_whole(&cur, "INPUT")) {
1474             decl.Declaration.MemType = TGSI_MEMORY_TYPE_INPUT;
1475             ctx->cur = cur;
1476          }
1477       } else {
1478          if (str_match_nocase_whole(&cur, "LOCAL")) {
1479             decl.Declaration.Local = 1;
1480             ctx->cur = cur;
1481          }
1482
1483          cur = ctx->cur;
1484          eat_opt_white( &cur );
1485          if (*cur == ',') {
1486             cur++;
1487             eat_opt_white( &cur );
1488
1489             for (i = 0; i < TGSI_SEMANTIC_COUNT; i++) {
1490                if (str_match_nocase_whole(&cur, tgsi_semantic_names[i])) {
1491                   uint index;
1492
1493                   cur2 = cur;
1494                   eat_opt_white( &cur2 );
1495                   if (*cur2 == '[') {
1496                      cur2++;
1497                      eat_opt_white( &cur2 );
1498                      if (!parse_uint( &cur2, &index )) {
1499                         report_error( ctx, "Expected literal integer" );
1500                         return FALSE;
1501                      }
1502                      eat_opt_white( &cur2 );
1503                      if (*cur2 != ']') {
1504                         report_error( ctx, "Expected `]'" );
1505                         return FALSE;
1506                      }
1507                      cur2++;
1508
1509                      decl.Semantic.Index = index;
1510
1511                      cur = cur2;
1512                   }
1513
1514                   decl.Declaration.Semantic = 1;
1515                   decl.Semantic.Name = i;
1516
1517                   ctx->cur = cur;
1518                   break;
1519                }
1520             }
1521          }
1522       }
1523    }
1524
1525    cur = ctx->cur;
1526    eat_opt_white( &cur );
1527    if (*cur == ',' &&
1528        file == TGSI_FILE_OUTPUT && ctx->processor == PIPE_SHADER_GEOMETRY) {
1529       cur++;
1530       eat_opt_white(&cur);
1531       if (str_match_nocase_whole(&cur, "STREAM")) {
1532          uint stream[4];
1533
1534          eat_opt_white(&cur);
1535          if (*cur != '(') {
1536             report_error(ctx, "Expected '('");
1537             return FALSE;
1538          }
1539          cur++;
1540
1541          for (int i = 0; i < 4; ++i) {
1542             eat_opt_white(&cur);
1543             if (!parse_uint(&cur, &stream[i])) {
1544                report_error(ctx, "Expected literal integer");
1545                return FALSE;
1546             }
1547
1548             eat_opt_white(&cur);
1549             if (i < 3) {
1550                if (*cur != ',') {
1551                   report_error(ctx, "Expected ','");
1552                   return FALSE;
1553                }
1554                cur++;
1555             }
1556          }
1557
1558          if (*cur != ')') {
1559             report_error(ctx, "Expected ')'");
1560             return FALSE;
1561          }
1562          cur++;
1563
1564          decl.Semantic.StreamX = stream[0];
1565          decl.Semantic.StreamY = stream[1];
1566          decl.Semantic.StreamZ = stream[2];
1567          decl.Semantic.StreamW = stream[3];
1568
1569          ctx->cur = cur;
1570       }
1571    }
1572
1573    cur = ctx->cur;
1574    eat_opt_white( &cur );
1575    if (*cur == ',' && !is_vs_input) {
1576       uint i;
1577
1578       cur++;
1579       eat_opt_white( &cur );
1580       for (i = 0; i < TGSI_INTERPOLATE_COUNT; i++) {
1581          if (str_match_nocase_whole( &cur, tgsi_interpolate_names[i] )) {
1582             decl.Declaration.Interpolate = 1;
1583             decl.Interp.Interpolate = i;
1584
1585             ctx->cur = cur;
1586             break;
1587          }
1588       }
1589    }
1590
1591    cur = ctx->cur;
1592    eat_opt_white( &cur );
1593    if (*cur == ',' && !is_vs_input) {
1594       uint i;
1595
1596       cur++;
1597       eat_opt_white( &cur );
1598       for (i = 0; i < TGSI_INTERPOLATE_LOC_COUNT; i++) {
1599          if (str_match_nocase_whole( &cur, tgsi_interpolate_locations[i] )) {
1600             decl.Interp.Location = i;
1601
1602             ctx->cur = cur;
1603             break;
1604          }
1605       }
1606    }
1607
1608    cur = ctx->cur;
1609    eat_opt_white( &cur );
1610    if (*cur == ',' && !is_vs_input) {
1611       cur++;
1612       eat_opt_white( &cur );
1613       if (str_match_nocase_whole( &cur, tgsi_invariant_name )) {
1614          decl.Declaration.Invariant = 1;
1615          ctx->cur = cur;
1616       } else {
1617          report_error( ctx, "Expected semantic, interpolate attribute, or invariant ");
1618          return FALSE;
1619       }
1620    }
1621
1622    advance = tgsi_build_full_declaration(
1623       &decl,
1624       ctx->tokens_cur,
1625       ctx->header,
1626       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1627
1628    if (advance == 0)
1629       return FALSE;
1630    ctx->tokens_cur += advance;
1631
1632    return TRUE;
1633 }
1634
1635 static boolean parse_immediate( struct translate_ctx *ctx )
1636 {
1637    struct tgsi_full_immediate imm;
1638    uint advance;
1639    uint type;
1640
1641    if (*ctx->cur == '[') {
1642       uint uindex;
1643
1644       ++ctx->cur;
1645
1646       eat_opt_white( &ctx->cur );
1647       if (!parse_uint( &ctx->cur, &uindex )) {
1648          report_error( ctx, "Expected literal unsigned integer" );
1649          return FALSE;
1650       }
1651
1652       if (uindex != ctx->num_immediates) {
1653          report_error( ctx, "Immediates must be sorted" );
1654          return FALSE;
1655       }
1656
1657       eat_opt_white( &ctx->cur );
1658       if (*ctx->cur != ']') {
1659          report_error( ctx, "Expected `]'" );
1660          return FALSE;
1661       }
1662
1663       ctx->cur++;
1664    }
1665
1666    if (!eat_white( &ctx->cur )) {
1667       report_error( ctx, "Syntax error" );
1668       return FALSE;
1669    }
1670    for (type = 0; type < ARRAY_SIZE(tgsi_immediate_type_names); ++type) {
1671       if (str_match_nocase_whole(&ctx->cur, tgsi_immediate_type_names[type]))
1672          break;
1673    }
1674    if (type == ARRAY_SIZE(tgsi_immediate_type_names)) {
1675       report_error( ctx, "Expected immediate type" );
1676       return FALSE;
1677    }
1678
1679    imm = tgsi_default_full_immediate();
1680    imm.Immediate.NrTokens += 4;
1681    imm.Immediate.DataType = type;
1682    parse_immediate_data(ctx, type, imm.u);
1683
1684    advance = tgsi_build_full_immediate(
1685       &imm,
1686       ctx->tokens_cur,
1687       ctx->header,
1688       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1689    if (advance == 0)
1690       return FALSE;
1691    ctx->tokens_cur += advance;
1692
1693    ctx->num_immediates++;
1694
1695    return TRUE;
1696 }
1697
1698 static boolean
1699 parse_primitive( const char **pcur, uint *primitive )
1700 {
1701    uint i;
1702
1703    for (i = 0; i < PIPE_PRIM_MAX; i++) {
1704       const char *cur = *pcur;
1705
1706       if (str_match_nocase_whole( &cur, tgsi_primitive_names[i])) {
1707          *primitive = i;
1708          *pcur = cur;
1709          return TRUE;
1710       }
1711    }
1712    return FALSE;
1713 }
1714
1715 static boolean
1716 parse_fs_coord_origin( const char **pcur, uint *fs_coord_origin )
1717 {
1718    uint i;
1719
1720    for (i = 0; i < ARRAY_SIZE(tgsi_fs_coord_origin_names); i++) {
1721       const char *cur = *pcur;
1722
1723       if (str_match_nocase_whole( &cur, tgsi_fs_coord_origin_names[i])) {
1724          *fs_coord_origin = i;
1725          *pcur = cur;
1726          return TRUE;
1727       }
1728    }
1729    return FALSE;
1730 }
1731
1732 static boolean
1733 parse_fs_coord_pixel_center( const char **pcur, uint *fs_coord_pixel_center )
1734 {
1735    uint i;
1736
1737    for (i = 0; i < ARRAY_SIZE(tgsi_fs_coord_pixel_center_names); i++) {
1738       const char *cur = *pcur;
1739
1740       if (str_match_nocase_whole( &cur, tgsi_fs_coord_pixel_center_names[i])) {
1741          *fs_coord_pixel_center = i;
1742          *pcur = cur;
1743          return TRUE;
1744       }
1745    }
1746    return FALSE;
1747 }
1748
1749 static boolean
1750 parse_property_next_shader( const char **pcur, uint *next_shader )
1751 {
1752    uint i;
1753
1754    for (i = 0; i < ARRAY_SIZE(tgsi_processor_type_names); i++) {
1755       const char *cur = *pcur;
1756
1757       if (str_match_nocase_whole( &cur, tgsi_processor_type_names[i])) {
1758          *next_shader = i;
1759          *pcur = cur;
1760          return TRUE;
1761       }
1762    }
1763    return FALSE;
1764 }
1765
1766 static boolean parse_property( struct translate_ctx *ctx )
1767 {
1768    struct tgsi_full_property prop;
1769    uint property_name;
1770    uint values[8];
1771    uint advance;
1772    char id[64];
1773
1774    if (!eat_white( &ctx->cur )) {
1775       report_error( ctx, "Syntax error" );
1776       return FALSE;
1777    }
1778    if (!parse_identifier( &ctx->cur, id, sizeof(id) )) {
1779       report_error( ctx, "Syntax error" );
1780       return FALSE;
1781    }
1782    for (property_name = 0; property_name < TGSI_PROPERTY_COUNT;
1783         ++property_name) {
1784       if (streq_nocase_uprcase(tgsi_property_names[property_name], id)) {
1785          break;
1786       }
1787    }
1788    if (property_name >= TGSI_PROPERTY_COUNT) {
1789       debug_printf( "\nError: Unknown property : '%s'", id );
1790       return FALSE;
1791    }
1792
1793    eat_opt_white( &ctx->cur );
1794    switch(property_name) {
1795    case TGSI_PROPERTY_GS_INPUT_PRIM:
1796    case TGSI_PROPERTY_GS_OUTPUT_PRIM:
1797       if (!parse_primitive(&ctx->cur, &values[0] )) {
1798          report_error( ctx, "Unknown primitive name as property!" );
1799          return FALSE;
1800       }
1801       if (property_name == TGSI_PROPERTY_GS_INPUT_PRIM &&
1802           ctx->processor == PIPE_SHADER_GEOMETRY) {
1803          ctx->implied_array_size = u_vertices_per_prim(values[0]);
1804       }
1805       break;
1806    case TGSI_PROPERTY_FS_COORD_ORIGIN:
1807       if (!parse_fs_coord_origin(&ctx->cur, &values[0] )) {
1808          report_error( ctx, "Unknown coord origin as property: must be UPPER_LEFT or LOWER_LEFT!" );
1809          return FALSE;
1810       }
1811       break;
1812    case TGSI_PROPERTY_FS_COORD_PIXEL_CENTER:
1813       if (!parse_fs_coord_pixel_center(&ctx->cur, &values[0] )) {
1814          report_error( ctx, "Unknown coord pixel center as property: must be HALF_INTEGER or INTEGER!" );
1815          return FALSE;
1816       }
1817       break;
1818    case TGSI_PROPERTY_NEXT_SHADER:
1819       if (!parse_property_next_shader(&ctx->cur, &values[0] )) {
1820          report_error( ctx, "Unknown next shader property value." );
1821          return FALSE;
1822       }
1823       break;
1824    case TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS:
1825    default:
1826       if (!parse_uint(&ctx->cur, &values[0] )) {
1827          report_error( ctx, "Expected unsigned integer as property!" );
1828          return FALSE;
1829       }
1830    }
1831
1832    prop = tgsi_default_full_property();
1833    prop.Property.PropertyName = property_name;
1834    prop.Property.NrTokens += 1;
1835    prop.u[0].Data = values[0];
1836
1837    advance = tgsi_build_full_property(
1838       &prop,
1839       ctx->tokens_cur,
1840       ctx->header,
1841       (uint) (ctx->tokens_end - ctx->tokens_cur) );
1842    if (advance == 0)
1843       return FALSE;
1844    ctx->tokens_cur += advance;
1845
1846    return TRUE;
1847 }
1848
1849
1850 static boolean translate( struct translate_ctx *ctx )
1851 {
1852    eat_opt_white( &ctx->cur );
1853    if (!parse_header( ctx ))
1854       return FALSE;
1855
1856    if (ctx->processor == PIPE_SHADER_TESS_CTRL ||
1857        ctx->processor == PIPE_SHADER_TESS_EVAL)
1858        ctx->implied_array_size = 32;
1859
1860    while (*ctx->cur != '\0') {
1861       uint label_val = 0;
1862       if (!eat_white( &ctx->cur )) {
1863          report_error( ctx, "Syntax error" );
1864          return FALSE;
1865       }
1866
1867       if (*ctx->cur == '\0')
1868          break;
1869       if (parse_label( ctx, &label_val )) {
1870          if (!parse_instruction( ctx, TRUE ))
1871             return FALSE;
1872       }
1873       else if (str_match_nocase_whole( &ctx->cur, "DCL" )) {
1874          if (!parse_declaration( ctx ))
1875             return FALSE;
1876       }
1877       else if (str_match_nocase_whole( &ctx->cur, "IMM" )) {
1878          if (!parse_immediate( ctx ))
1879             return FALSE;
1880       }
1881       else if (str_match_nocase_whole( &ctx->cur, "PROPERTY" )) {
1882          if (!parse_property( ctx ))
1883             return FALSE;
1884       }
1885       else if (!parse_instruction( ctx, FALSE )) {
1886          return FALSE;
1887       }
1888    }
1889
1890    return TRUE;
1891 }
1892
1893 boolean
1894 tgsi_text_translate(
1895    const char *text,
1896    struct tgsi_token *tokens,
1897    uint num_tokens )
1898 {
1899    struct translate_ctx ctx = {0};
1900
1901    ctx.text = text;
1902    ctx.cur = text;
1903    ctx.tokens = tokens;
1904    ctx.tokens_cur = tokens;
1905    ctx.tokens_end = tokens + num_tokens;
1906
1907    if (!translate( &ctx ))
1908       return FALSE;
1909
1910    return tgsi_sanity_check( tokens );
1911 }