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annotate src/cpuinfo/SDL_cpuinfo.c @ 753:b14fdadd8311

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Date: Thu, 4 Dec 2003 07:48:40 +0200 From: "Mike Gorchak" Subject: SDL/QNX6 new patch Here in attachment my patch for the SDL/QNX6 again :) It contain non-crtitical/cosmetic fixes: 1. Fixed window centering at other than the first consoles. 2. Fixed window centering algorithm in case when window height or width are greater than the desktop resolution. 3. Fixed window positioning on other than the first consoles. 4. Fixed occasional input focus lost when switching to fullscreen. 5. Removed the Photon's default chroma color for the overlays, added RGB(12, 6, 12) color instead (very dark pink). 6. Added more checks to the YUV overlay code (fixed crashes during resolution mode switches). 7. Added support for Enter/Backspace keys in unicode mode (used by Maelstrom and by other games). 8. Fixed window restore/maximize function. It works, finally.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 Dec 2003 12:35:56 +0000
parents 06cdd106d61c
children b8d311d90021
rev   line source
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22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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8 version 2 of the License, or (at your option) any later version.
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9
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* CPU feature detection for SDL */
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29
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30 #include "SDL.h"
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31 #include "SDL_cpuinfo.h"
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32
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33 #define CPU_HAS_RDTSC 0x00000001
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34 #define CPU_HAS_MMX 0x00000002
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35 #define CPU_HAS_3DNOW 0x00000004
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36 #define CPU_HAS_SSE 0x00000008
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37
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38 static __inline__ int CPU_haveCPUID()
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39 {
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40 int has_CPUID = 0;
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41 #if defined(__GNUC__) && defined(i386)
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42 __asm__ (
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43 "push %%ecx\n"
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44 " pushfl # Get original EFLAGS \n"
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45 " popl %%eax \n"
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46 " movl %%eax,%%ecx \n"
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47 " xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
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48 " pushl %%eax # Save new EFLAGS value on stack \n"
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49 " popfl # Replace current EFLAGS value \n"
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50 " pushfl # Get new EFLAGS \n"
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51 " popl %%eax # Store new EFLAGS in EAX \n"
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52 " xorl %%ecx,%%eax # Can not toggle ID bit, \n"
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53 " jz 1f # Processor=80486 \n"
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54 " movl $1,%0 # We have CPUID support \n"
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55 "1: \n"
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56 "pop %%ecx\n"
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57 : "=r" (has_CPUID)
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58 :
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59 : "%eax", "%ecx"
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60 );
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61 #elif defined(_MSC_VER)
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62 __asm {
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63 pushfd ; Get original EFLAGS
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64 pop eax
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65 mov ecx, eax
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66 xor eax, 200000h ; Flip ID bit in EFLAGS
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67 push eax ; Save new EFLAGS value on stack
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68 popfd ; Replace current EFLAGS value
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69 pushfd ; Get new EFLAGS
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70 pop eax ; Store new EFLAGS in EAX
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71 xor eax, ecx ; Can not toggle ID bit,
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72 jz done ; Processor=80486
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73 mov has_CPUID,1 ; We have CPUID support
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74 done:
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75 }
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76 #endif
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77 return has_CPUID;
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78 }
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79
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80 static __inline__ int CPU_getCPUIDFeatures()
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81 {
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82 int features = 0;
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83 #if defined(__GNUC__) && defined(i386)
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84 __asm__ (
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85 "push %%ebx\n"
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86 "push %%ecx\n"
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87 "push %%edx\n"
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88 " xorl %%eax,%%eax # Set up for CPUID instruction \n"
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89 " cpuid # Get and save vendor ID \n"
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90 " cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n"
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91 " jl 1f # We dont have the CPUID instruction\n"
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92 " xorl %%eax,%%eax \n"
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93 " incl %%eax \n"
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94 " cpuid # Get family/model/stepping/features\n"
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95 " movl %%edx,%0 \n"
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96 "1: \n"
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97 "pop %%edx\n"
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98 "pop %%ecx\n"
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99 "pop %%ebx\n"
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100 : "=r" (features)
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101 :
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102 : "%eax", "%ebx", "%ecx", "%edx"
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103 );
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104 #elif defined(_MSC_VER)
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105 __asm {
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106 xor eax, eax ; Set up for CPUID instruction
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107 cpuid ; Get and save vendor ID
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108 cmp eax, 1 ; Make sure 1 is valid input for CPUID
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109 jl done ; We dont have the CPUID instruction
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110 xor eax, eax
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111 inc eax
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112 cpuid ; Get family/model/stepping/features
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113 mov features, edx
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114 done:
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115 }
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116 #endif
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117 return features;
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118 }
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119
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120 static __inline__ int CPU_haveRDTSC()
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121 {
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122 if ( CPU_haveCPUID() ) {
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123 return (CPU_getCPUIDFeatures() & 0x00000010);
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124 }
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125 return 0;
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126 }
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127
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128 static __inline__ int CPU_haveMMX()
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129 {
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130 if ( CPU_haveCPUID() ) {
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131 return (CPU_getCPUIDFeatures() & 0x00800000);
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132 }
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133 return 0;
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134 }
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135
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136 static __inline__ int CPU_have3DNow()
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137 {
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138 int has_3DNow = 0;
747
da36f59485da Check for CPUID before checking for 3DNow!
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139 if ( !CPU_haveCPUID() ) {
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140 return 0;
da36f59485da Check for CPUID before checking for 3DNow!
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141 }
745
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142 #if defined(__GNUC__) && defined(i386)
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143 __asm__ (
71ee03909f42 Greatly simplified the SDL CPU info code
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144 "push %%ebx\n"
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145 "push %%ecx\n"
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146 "push %%edx\n"
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147 " movl $0x80000000,%%eax # Query for extended functions \n"
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148 " cpuid # Get extended function limit \n"
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149 " cmpl $0x80000001,%%eax \n"
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150 " jbe 1f # Nope, we dont have function 800000001h\n"
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151 " movl $0x80000001,%%eax # Setup extended function 800000001h\n"
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152 " cpuid # and get the information \n"
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153 " testl $0x80000000,%%edx # Bit 31 is set if 3DNow! present \n"
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154 " jz 1f # Nope, we dont have 3DNow support\n"
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155 " movl $1,%0 # Yep, we have 3DNow! support! \n"
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156 "1: \n"
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157 "pop %%edx\n"
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158 "pop %%ecx\n"
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159 "pop %%ebx\n"
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160 : "=r" (has_3DNow)
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161 :
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162 : "%eax", "%ebx", "%ecx", "%edx"
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163 );
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164 #elif defined(_MSC_VER)
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06cdd106d61c Updated Visual C++ support
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165 __asm {
745
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166 mov eax,80000000h ; Query for extended functions
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167 cpuid ; Get extended function limit
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168 cmp eax,80000001h
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169 jbe done ; Nope, we dont have function 800000001h
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170 mov eax,80000001h ; Setup extended function 800000001h
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171 cpuid ; and get the information
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172 test edx,80000000h ; Bit 31 is set if 3DNow! present
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173 jz done ; Nope, we dont have 3DNow support
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174 mov has_3DNow,1 ; Yep, we have 3DNow! support!
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175 done:
71ee03909f42 Greatly simplified the SDL CPU info code
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176 }
71ee03909f42 Greatly simplified the SDL CPU info code
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177 #endif
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178 return has_3DNow;
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179 }
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180
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181 static __inline__ int CPU_haveSSE()
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182 {
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183 if ( CPU_haveCPUID() ) {
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184 return (CPU_getCPUIDFeatures() & 0x02000000);
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185 }
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186 return 0;
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187 }
739
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188
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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189 static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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190
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
191 static Uint32 SDL_GetCPUFeatures()
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diff changeset
192 {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
193 if ( SDL_CPUFeatures == 0xFFFFFFFF ) {
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194 SDL_CPUFeatures = 0;
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195 if ( CPU_haveRDTSC() ) {
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196 SDL_CPUFeatures |= CPU_HAS_RDTSC;
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197 }
739
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198 if ( CPU_haveMMX() ) {
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199 SDL_CPUFeatures |= CPU_HAS_MMX;
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200 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
201 if ( CPU_have3DNow() ) {
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diff changeset
202 SDL_CPUFeatures |= CPU_HAS_3DNOW;
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203 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
204 if ( CPU_haveSSE() ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
205 SDL_CPUFeatures |= CPU_HAS_SSE;
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206 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
207 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
208 return SDL_CPUFeatures;
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209 }
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diff changeset
210
745
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211 SDL_bool SDL_HasRDTSC()
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212 {
71ee03909f42 Greatly simplified the SDL CPU info code
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diff changeset
213 if ( SDL_GetCPUFeatures() & CPU_HAS_RDTSC ) {
71ee03909f42 Greatly simplified the SDL CPU info code
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214 return SDL_TRUE;
71ee03909f42 Greatly simplified the SDL CPU info code
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215 }
71ee03909f42 Greatly simplified the SDL CPU info code
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216 return SDL_FALSE;
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diff changeset
217 }
71ee03909f42 Greatly simplified the SDL CPU info code
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diff changeset
218
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
219 SDL_bool SDL_HasMMX()
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
220 {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 if ( SDL_GetCPUFeatures() & CPU_HAS_MMX ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
222 return SDL_TRUE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
223 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 return SDL_FALSE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
225 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
227 SDL_bool SDL_Has3DNow()
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
228 {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
229 if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOW ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
230 return SDL_TRUE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
231 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
232 return SDL_FALSE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
233 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
234
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
235 SDL_bool SDL_HasSSE()
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
236 {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 if ( SDL_GetCPUFeatures() & CPU_HAS_SSE ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
238 return SDL_TRUE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
239 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 return SDL_FALSE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
243 #ifdef TEST_MAIN
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
244
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
245 #include <stdio.h>
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
246
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
247 int main()
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
248 {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
249 printf("MMX: %d\n", SDL_HasMMX());
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
250 printf("3DNow: %d\n", SDL_Has3DNow());
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
251 printf("SSE: %d\n", SDL_HasSSE());
745
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diff changeset
252 return 0;
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
253 }
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
254
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
diff changeset
255 #endif /* TEST_MAIN */