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      1 
      2 /*
      3  * Mesa 3-D graphics library
      4  * Version:  6.3
      5  *
      6  * Copyright (C) 1999-2003  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  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     24  */
     25 
     26 /*
     27  * x86-64 optimizations shamelessy converted from x86/sse/3dnow assembly by
     28  * Mikko Tiihonen
     29  */
     30 
     31 #ifdef USE_X86_64_ASM
     32 
     33 #include "main/glheader.h"
     34 #include "main/context.h"
     35 #include "math/m_xform.h"
     36 #include "tnl/t_context.h"
     37 #include "x86-64.h"
     38 #include "../x86/x86_xform.h"
     39 
     40 #ifdef DEBUG
     41 #include "math/m_debug.h"
     42 #endif
     43 
     44 extern void _mesa_x86_64_cpuid(unsigned int *regs);
     45 
     46 DECLARE_XFORM_GROUP( x86_64, 4 )
     47 DECLARE_XFORM_GROUP( 3dnow, 4 )
     48 
     49 #else
     50 /* just to silence warning below */
     51 #include "x86-64.h"
     52 #endif
     53 
     54 /*
     55 extern void _mesa_x86_64_transform_points4_general( XFORM_ARGS );
     56 extern void _mesa_x86_64_transform_points4_identity( XFORM_ARGS );
     57 extern void _mesa_x86_64_transform_points4_perspective( XFORM_ARGS );
     58 extern void _mesa_x86_64_transform_points4_3d( XFORM_ARGS );
     59 extern void _mesa_x86_64_transform_points4_3d_no_rot( XFORM_ARGS );
     60 extern void _mesa_x86_64_transform_points4_2d_no_rot( XFORM_ARGS );
     61 extern void _mesa_x86_64_transform_points4_2d( XFORM_ARGS );
     62 */
     63 
     64 #ifdef USE_X86_64_ASM
     65 static void message( const char *msg )
     66 {
     67    if (_mesa_getenv("MESA_DEBUG")) {
     68       _mesa_debug( NULL, "%s", msg );
     69    }
     70 }
     71 #endif
     72 
     73 
     74 void _mesa_init_all_x86_64_transform_asm(void)
     75 {
     76 #ifdef USE_X86_64_ASM
     77    unsigned int regs[4];
     78 
     79    if ( _mesa_getenv( "MESA_NO_ASM" ) ) {
     80      return;
     81    }
     82 
     83    message("Initializing x86-64 optimizations\n");
     84 
     85 
     86    _mesa_transform_tab[4][MATRIX_GENERAL] =
     87       _mesa_x86_64_transform_points4_general;
     88    _mesa_transform_tab[4][MATRIX_IDENTITY] =
     89       _mesa_x86_64_transform_points4_identity;
     90    _mesa_transform_tab[4][MATRIX_3D] =
     91       _mesa_x86_64_transform_points4_3d;
     92 
     93    regs[0] = 0x80000001;
     94    regs[1] = 0x00000000;
     95    regs[2] = 0x00000000;
     96    regs[3] = 0x00000000;
     97    _mesa_x86_64_cpuid(regs);
     98    if (regs[3] & (1U << 31)) {
     99       message("3Dnow! detected\n");
    100       _mesa_transform_tab[4][MATRIX_3D_NO_ROT] =
    101 	  _mesa_3dnow_transform_points4_3d_no_rot;
    102       _mesa_transform_tab[4][MATRIX_PERSPECTIVE] =
    103 	  _mesa_3dnow_transform_points4_perspective;
    104       _mesa_transform_tab[4][MATRIX_2D_NO_ROT] =
    105 	  _mesa_3dnow_transform_points4_2d_no_rot;
    106       _mesa_transform_tab[4][MATRIX_2D] =
    107 	  _mesa_3dnow_transform_points4_2d;
    108 
    109    }
    110 
    111 
    112 #ifdef DEBUG_MATH
    113    _math_test_all_transform_functions("x86_64");
    114    _math_test_all_cliptest_functions("x86_64");
    115    _math_test_all_normal_transform_functions("x86_64");
    116 #endif
    117 
    118 #endif
    119 }
    120