x86-64.c revision c1f859d4 
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/common_x86_macros.h"
39
40#ifdef DEBUG
41#include "math/m_debug.h"
42#endif
43
44extern void _mesa_x86_64_cpuid(unsigned int *regs);
45
46DECLARE_XFORM_GROUP( x86_64, 4 )
47DECLARE_XFORM_GROUP( 3dnow, 4 )
48
49#else
50/* just to silence warning below */
51#include "x86-64.h"
52#endif
53
54/*
55extern void _mesa_x86_64_transform_points4_general( XFORM_ARGS );
56extern void _mesa_x86_64_transform_points4_identity( XFORM_ARGS );
57extern void _mesa_x86_64_transform_points4_perspective( XFORM_ARGS );
58extern void _mesa_x86_64_transform_points4_3d( XFORM_ARGS );
59extern void _mesa_x86_64_transform_points4_3d_no_rot( XFORM_ARGS );
60extern void _mesa_x86_64_transform_points4_2d_no_rot( XFORM_ARGS );
61extern void _mesa_x86_64_transform_points4_2d( XFORM_ARGS );
62*/
63
64#ifdef USE_X86_64_ASM
65static void message( const char *msg )
66{
67   GLboolean debug;
68#ifdef DEBUG
69   debug = GL_TRUE;
70#else
71   if ( _mesa_getenv( "MESA_DEBUG" ) ) {
72      debug = GL_TRUE;
73   } else {
74      debug = GL_FALSE;
75   }
76#endif
77   if ( debug ) {
78      _mesa_debug( NULL, "%s", msg );
79   }
80}
81#endif
82
83
84void _mesa_init_all_x86_64_transform_asm(void)
85{
86#ifdef USE_X86_64_ASM
87   unsigned int regs[4];
88
89   if ( _mesa_getenv( "MESA_NO_ASM" ) ) {
90     return;
91   }
92
93   message("Initializing x86-64 optimizations\n");
94
95
96   _mesa_transform_tab[4][MATRIX_GENERAL] =
97      _mesa_x86_64_transform_points4_general;
98   _mesa_transform_tab[4][MATRIX_IDENTITY] =
99      _mesa_x86_64_transform_points4_identity;
100   _mesa_transform_tab[4][MATRIX_3D] =
101      _mesa_x86_64_transform_points4_3d;
102
103   regs[0] = 0x80000001;
104   regs[1] = 0x00000000;
105   regs[2] = 0x00000000;
106   regs[3] = 0x00000000;
107   _mesa_x86_64_cpuid(regs);
108   if (regs[3] & (1U << 31)) {
109      message("3Dnow! detected\n");
110      _mesa_transform_tab[4][MATRIX_3D_NO_ROT] =
111	  _mesa_3dnow_transform_points4_3d_no_rot;
112      _mesa_transform_tab[4][MATRIX_PERSPECTIVE] =
113	  _mesa_3dnow_transform_points4_perspective;
114      _mesa_transform_tab[4][MATRIX_2D_NO_ROT] =
115	  _mesa_3dnow_transform_points4_2d_no_rot;
116      _mesa_transform_tab[4][MATRIX_2D] =
117	  _mesa_3dnow_transform_points4_2d;
118
119   }
120
121
122#ifdef DEBUG_MATH
123   _math_test_all_transform_functions("x86_64");
124   _math_test_all_cliptest_functions("x86_64");
125   _math_test_all_normal_transform_functions("x86_64");
126#endif
127
128#endif
129}
130