src/gallium/auxiliary/tgsi/tgsi_parse.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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 #ifndef TGSI_PARSE_H
  29 #define TGSI_PARSE_H
  30
  31 #include "pipe/p_shader_tokens.h"
  32
  33 #if defined __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 struct tgsi_full_header
  38 {
  39    struct tgsi_header      Header;
  40    struct tgsi_processor   Processor;
  41 };
  42
  43 struct tgsi_full_dst_register
  44 {
  45    struct tgsi_dst_register               Register;
  46    struct tgsi_src_register               Indirect;
  47 };
  48
  49 struct tgsi_full_src_register
  50 {
  51    struct tgsi_src_register         Register;
  52    struct tgsi_src_register         Indirect;
  53    struct tgsi_dimension            Dimension;
  54    struct tgsi_src_register         DimIndirect;
  55 };
  56
  57 struct tgsi_full_declaration
  58 {
  59    struct tgsi_declaration Declaration;
  60    struct tgsi_declaration_range Range;
  61    struct tgsi_declaration_semantic Semantic;
  62 };
  63
  64 struct tgsi_full_immediate
  65 {
  66    struct tgsi_immediate   Immediate;
  67    union tgsi_immediate_data u[4];
  68 };
  69
  70 #define TGSI_FULL_MAX_DST_REGISTERS 2
  71 #define TGSI_FULL_MAX_SRC_REGISTERS 4 /* TXD has 4 */
  72
  73 struct tgsi_full_instruction
  74 {
  75    struct tgsi_instruction             Instruction;
  76    struct tgsi_instruction_predicate   Predicate;
  77    struct tgsi_instruction_label       Label;
  78    struct tgsi_instruction_texture     Texture;
  79    struct tgsi_full_dst_register       Dst[TGSI_FULL_MAX_DST_REGISTERS];
  80    struct tgsi_full_src_register       Src[TGSI_FULL_MAX_SRC_REGISTERS];
  81 };
  82
  83 union tgsi_full_token
  84 {
  85    struct tgsi_token             Token;
  86    struct tgsi_full_declaration  FullDeclaration;
  87    struct tgsi_full_immediate    FullImmediate;
  88    struct tgsi_full_instruction  FullInstruction;
  89 };
  90
  91 struct tgsi_parse_context
  92 {
  93    const struct tgsi_token    *Tokens;
  94    unsigned                   Position;
  95    struct tgsi_full_header    FullHeader;
  96    union tgsi_full_token      FullToken;
  97 };
  98
  99 #define TGSI_PARSE_OK      0
 100 #define TGSI_PARSE_ERROR   1
 101
 102 unsigned
 103 tgsi_parse_init(
 104    struct tgsi_parse_context *ctx,
 105    const struct tgsi_token *tokens );
 106
 107 void
 108 tgsi_parse_free(
 109    struct tgsi_parse_context *ctx );
 110
 111 boolean
 112 tgsi_parse_end_of_tokens(
 113    struct tgsi_parse_context *ctx );
 114
 115 void
 116 tgsi_parse_token(
 117    struct tgsi_parse_context *ctx );
 118
 119 unsigned
 120 tgsi_num_tokens(const struct tgsi_token *tokens);
 121
 122 struct tgsi_token *
 123 tgsi_dup_tokens(const struct tgsi_token *tokens);
 124
 125 #if defined __cplusplus
 126 }
 127 #endif
 128
 129 #endif /* TGSI_PARSE_H */
 130