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      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 #ifndef TGSI_INFO_H
     29 #define TGSI_INFO_H
     30 
     31 #include "pipe/p_compiler.h"
     32 #include "pipe/p_shader_tokens.h"
     33 #include "util/u_format.h"
     34 
     35 #if defined __cplusplus
     36 extern "C" {
     37 #endif
     38 
     39 /* This enum describes how an opcode calculates its result. */
     40 enum tgsi_output_mode {
     41    /** The opcode produces no result. */
     42    TGSI_OUTPUT_NONE            = 0,
     43 
     44    /** When this opcode writes to a channel of the destination register,
     45     *  it takes as arguments values from the same channel of the source
     46     *  register(s).
     47     *
     48     *  Example: TGSI_OPCODE_ADD
     49     */
     50    TGSI_OUTPUT_COMPONENTWISE   = 1,
     51 
     52    /** This opcode writes the same value to all enabled channels of the
     53     * destination register.
     54     *
     55     *  Example: TGSI_OPCODE_RSQ
     56     */
     57    TGSI_OUTPUT_REPLICATE       = 2,
     58 
     59    /** The operation performed by this opcode is dependent on which channel
     60     *  of the destination register is being written.
     61     *
     62     *  Example: TGSI_OPCODE_LOG
     63     */
     64    TGSI_OUTPUT_CHAN_DEPENDENT  = 3,
     65 
     66    /**
     67     * Example: TGSI_OPCODE_TEX
     68     */
     69    TGSI_OUTPUT_OTHER           = 4
     70 };
     71 
     72 struct tgsi_opcode_info
     73 {
     74    unsigned num_dst:3;
     75    unsigned num_src:3;
     76    unsigned is_tex:1;
     77    unsigned is_store:1;
     78    unsigned is_branch:1;
     79    int pre_dedent:2;
     80    int post_indent:2;
     81    enum tgsi_output_mode output_mode:3;
     82    const char *mnemonic;
     83    uint opcode;
     84 };
     85 
     86 const struct tgsi_opcode_info *
     87 tgsi_get_opcode_info( uint opcode );
     88 
     89 const char *
     90 tgsi_get_opcode_name( uint opcode );
     91 
     92 const char *
     93 tgsi_get_processor_name( uint processor );
     94 
     95 enum tgsi_opcode_type {
     96    TGSI_TYPE_UNTYPED, /* for MOV */
     97    TGSI_TYPE_VOID,
     98    TGSI_TYPE_UNSIGNED,
     99    TGSI_TYPE_SIGNED,
    100    TGSI_TYPE_FLOAT,
    101    TGSI_TYPE_DOUBLE,
    102    TGSI_TYPE_UNSIGNED64,
    103    TGSI_TYPE_SIGNED64,
    104 };
    105 
    106 static inline bool tgsi_type_is_64bit(enum tgsi_opcode_type type)
    107 {
    108    if (type == TGSI_TYPE_DOUBLE || type == TGSI_TYPE_UNSIGNED64 ||
    109        type == TGSI_TYPE_SIGNED64)
    110       return true;
    111    return false;
    112 }
    113 
    114 enum tgsi_opcode_type
    115 tgsi_opcode_infer_src_type( uint opcode );
    116 
    117 enum tgsi_opcode_type
    118 tgsi_opcode_infer_dst_type( uint opcode );
    119 
    120 #if defined __cplusplus
    121 }
    122 #endif
    123 
    124 #endif /* TGSI_INFO_H */
    125