text: 
  /*
   * Mesa 3-D graphics library
   * Version:  3.5
   *
   * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
   * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  /*
   * Transform function interface for assembly code.  Simply define
   * FRAME_OFFSET to the number of bytes pushed onto the stack before
   * using the ARG_* argument macros.
   *
   * Gareth Hughes
   */
  
  #ifndef __XFORM_ARGS_H__
  #define __XFORM_ARGS_H__
  
  /* Offsets for transform_func arguments
   *
   * typedef void (*transform_func)( GLvector4f *to_vec,
   *				   const GLfloat m[16],
   *				   const GLvector4f *from_vec );
   */
  #define OFFSET_DEST	4
  #define OFFSET_MATRIX	8
  #define OFFSET_SOURCE	12
  
  #define ARG_DEST	REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
  #define ARG_MATRIX 	REGOFF(FRAME_OFFSET+OFFSET_MATRIX, ESP)
  #define ARG_SOURCE 	REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP)
  
  #endif
  