src/mesa/x86/norm_args.h

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  3.5
   5  *
   6  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions 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 MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 /*
  28  * Normal transform function interface for assembly code.  Simply define
  29  * FRAME_OFFSET to the number of bytes pushed onto the stack before
  30  * using the ARG_* argument macros.
  31  *
  32  * Gareth Hughes
  33  */
  34
  35 #ifndef __NORM_ARGS_H__
  36 #define __NORM_ARGS_H__
  37
  38 /* Offsets for normal_func arguments
  39  *
  40  * typedef void (*normal_func)( const GLmatrix *mat,
  41  *                              GLfloat scale,
  42  *                              const GLvector4f *in,
  43  *                              const GLfloat lengths[],
  44  *                              GLvector4f *dest );
  45  */
  46 #define OFFSET_MAT      4
  47 #define OFFSET_SCALE    8
  48 #define OFFSET_IN       12
  49 #define OFFSET_LENGTHS  16
  50 #define OFFSET_DEST     20
  51
  52 #define ARG_MAT         REGOFF(FRAME_OFFSET+OFFSET_MAT, ESP)
  53 #define ARG_SCALE       REGOFF(FRAME_OFFSET+OFFSET_SCALE, ESP)
  54 #define ARG_IN          REGOFF(FRAME_OFFSET+OFFSET_IN, ESP)
  55 #define ARG_LENGTHS     REGOFF(FRAME_OFFSET+OFFSET_LENGTHS, ESP)
  56 #define ARG_DEST        REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
  57
  58 #endif