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1 /**************************************************************************
2  *
3  * Copyright 2007 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 #ifndef TGSI_PARSE_H
29 #define TGSI_PARSE_H
30 
31 #include "pipe/p_compiler.h"
32 #include "pipe/p_shader_tokens.h"
33 
34 #if defined __cplusplus
35 extern "C" {
36 #endif
37 
38 struct tgsi_full_header
39 {
40    struct tgsi_header      Header;
41    struct tgsi_processor   Processor;
42 };
43 
44 struct tgsi_full_dst_register
45 {
46    struct tgsi_dst_register               Register;
47    struct tgsi_ind_register               Indirect;
48    struct tgsi_dimension                  Dimension;
49    struct tgsi_ind_register               DimIndirect;
50 };
51 
52 struct tgsi_full_src_register
53 {
54    struct tgsi_src_register         Register;
55    struct tgsi_ind_register         Indirect;
56    struct tgsi_dimension            Dimension;
57    struct tgsi_ind_register         DimIndirect;
58 };
59 
60 struct tgsi_full_declaration
61 {
62    struct tgsi_declaration Declaration;
63    struct tgsi_declaration_range Range;
64    struct tgsi_declaration_dimension Dim;
65    struct tgsi_declaration_interp Interp;
66    struct tgsi_declaration_semantic Semantic;
67    struct tgsi_declaration_image Image;
68    struct tgsi_declaration_sampler_view SamplerView;
69    struct tgsi_declaration_array Array;
70 };
71 
72 struct tgsi_full_immediate
73 {
74    struct tgsi_immediate   Immediate;
75    union tgsi_immediate_data u[4];
76 };
77 
78 struct tgsi_full_property
79 {
80    struct tgsi_property   Property;
81    struct tgsi_property_data u[8];
82 };
83 
84 #define TGSI_FULL_MAX_DST_REGISTERS 2
85 #define TGSI_FULL_MAX_SRC_REGISTERS 5 /* SAMPLE_D has 5 */
86 #define TGSI_FULL_MAX_TEX_OFFSETS 4
87 
88 struct tgsi_full_instruction
89 {
90    struct tgsi_instruction             Instruction;
91    struct tgsi_instruction_predicate   Predicate;
92    struct tgsi_instruction_label       Label;
93    struct tgsi_instruction_texture     Texture;
94    struct tgsi_instruction_memory      Memory;
95    struct tgsi_full_dst_register       Dst[TGSI_FULL_MAX_DST_REGISTERS];
96    struct tgsi_full_src_register       Src[TGSI_FULL_MAX_SRC_REGISTERS];
97    struct tgsi_texture_offset          TexOffsets[TGSI_FULL_MAX_TEX_OFFSETS];
98 };
99 
100 union tgsi_full_token
101 {
102    struct tgsi_token             Token;
103    struct tgsi_full_declaration  FullDeclaration;
104    struct tgsi_full_immediate    FullImmediate;
105    struct tgsi_full_instruction  FullInstruction;
106    struct tgsi_full_property     FullProperty;
107 };
108 
109 struct tgsi_parse_context
110 {
111    const struct tgsi_token    *Tokens;
112    unsigned                   Position;
113    struct tgsi_full_header    FullHeader;
114    union tgsi_full_token      FullToken;
115 };
116 
117 #define TGSI_PARSE_OK      0
118 #define TGSI_PARSE_ERROR   1
119 
120 unsigned
121 tgsi_parse_init(
122    struct tgsi_parse_context *ctx,
123    const struct tgsi_token *tokens );
124 
125 void
126 tgsi_parse_free(
127    struct tgsi_parse_context *ctx );
128 
129 boolean
130 tgsi_parse_end_of_tokens(
131    struct tgsi_parse_context *ctx );
132 
133 void
134 tgsi_parse_token(
135    struct tgsi_parse_context *ctx );
136 
137 static inline unsigned
tgsi_num_tokens(const struct tgsi_token * tokens)138 tgsi_num_tokens(const struct tgsi_token *tokens)
139 {
140    struct tgsi_header header;
141    memcpy(&header, tokens, sizeof(header));
142    return header.HeaderSize + header.BodySize;
143 }
144 
145 void
146 tgsi_dump_tokens(const struct tgsi_token *tokens);
147 
148 struct tgsi_token *
149 tgsi_dup_tokens(const struct tgsi_token *tokens);
150 
151 struct tgsi_token *
152 tgsi_alloc_tokens(unsigned num_tokens);
153 
154 void
155 tgsi_free_tokens(const struct tgsi_token *tokens);
156 
157 unsigned
158 tgsi_get_processor_type(const struct tgsi_token *tokens);
159 
160 #if defined __cplusplus
161 }
162 #endif
163 
164 #endif /* TGSI_PARSE_H */
165 
166