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1 
2 /*
3  * Mesa 3-D graphics library
4  *
5  * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a
8  * copy of this software and associated documentation files (the "Software"),
9  * to deal in the Software without restriction, including without limitation
10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11  * and/or sell copies of the Software, and to permit persons to whom the
12  * Software is furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included
15  * in all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * 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
message(const char * msg)65 static void message( const char *msg )
66 {
67    if (getenv("MESA_DEBUG")) {
68       _mesa_debug( NULL, "%s", msg );
69    }
70 }
71 #endif
72 
73 
_mesa_init_all_x86_64_transform_asm(void)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 ( 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