Mercurial > sdl-ios-xcode
annotate src/cpuinfo/SDL_cpuinfo.c @ 3466:a288892cd24c
SDL_RenderReadPixels() needs to flush asynchronous operations before it reads.
The semantics are that it reads the back buffer, and those pixels may not be available once SDL_RenderPresent() has happened.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 21 Nov 2009 05:05:19 +0000 |
parents | 7bc83a9e09fd |
children | a4ce84c4f211 |
rev | line source |
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739
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1 /* |
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2 SDL - Simple DirectMedia Layer |
2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
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4 |
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5 This library is free software; you can redistribute it and/or |
1312
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
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9 |
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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 Lesser General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h" |
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23 |
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24 /* CPU feature detection for SDL */ |
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25 |
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26 #include "SDL_cpuinfo.h" |
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27 |
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28 #if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__)) |
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29 #include <sys/sysctl.h> /* For AltiVec check */ |
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30 #elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP |
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31 #include <signal.h> |
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32 #include <setjmp.h> |
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33 #endif |
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34 |
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35 #define CPU_HAS_RDTSC 0x00000001 |
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36 #define CPU_HAS_MMX 0x00000002 |
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37 #define CPU_HAS_MMXEXT 0x00000004 |
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38 #define CPU_HAS_3DNOW 0x00000010 |
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39 #define CPU_HAS_3DNOWEXT 0x00000020 |
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40 #define CPU_HAS_SSE 0x00000040 |
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41 #define CPU_HAS_SSE2 0x00000080 |
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42 #define CPU_HAS_ALTIVEC 0x00000100 |
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43 |
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44 #if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__ |
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45 /* This is the brute force way of detecting instruction sets... |
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46 the idea is borrowed from the libmpeg2 library - thanks! |
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47 */ |
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48 static jmp_buf jmpbuf; |
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49 static void |
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50 illegal_instruction(int sig) |
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51 { |
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52 longjmp(jmpbuf, 1); |
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53 } |
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54 #endif /* HAVE_SETJMP */ |
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55 |
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56 static __inline__ int |
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57 CPU_haveCPUID(void) |
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58 { |
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59 int has_CPUID = 0; |
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60 /* *INDENT-OFF* */ |
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61 #if defined(__GNUC__) && defined(i386) |
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62 __asm__ ( |
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63 " pushfl # Get original EFLAGS \n" |
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64 " popl %%eax \n" |
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65 " movl %%eax,%%ecx \n" |
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66 " xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n" |
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67 " pushl %%eax # Save new EFLAGS value on stack \n" |
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68 " popfl # Replace current EFLAGS value \n" |
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69 " pushfl # Get new EFLAGS \n" |
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70 " popl %%eax # Store new EFLAGS in EAX \n" |
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71 " xorl %%ecx,%%eax # Can not toggle ID bit, \n" |
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72 " jz 1f # Processor=80486 \n" |
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73 " movl $1,%0 # We have CPUID support \n" |
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74 "1: \n" |
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75 : "=m" (has_CPUID) |
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76 : |
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77 : "%eax", "%ecx" |
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78 ); |
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79 #elif defined(__GNUC__) && defined(__x86_64__) |
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80 /* Technically, if this is being compiled under __x86_64__ then it has |
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81 CPUid by definition. But it's nice to be able to prove it. :) */ |
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82 __asm__ ( |
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83 " pushfq # Get original EFLAGS \n" |
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84 " popq %%rax \n" |
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85 " movq %%rax,%%rcx \n" |
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86 " xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n" |
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87 " pushq %%rax # Save new EFLAGS value on stack \n" |
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88 " popfq # Replace current EFLAGS value \n" |
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89 " pushfq # Get new EFLAGS \n" |
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90 " popq %%rax # Store new EFLAGS in EAX \n" |
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91 " xorl %%ecx,%%eax # Can not toggle ID bit, \n" |
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92 " jz 1f # Processor=80486 \n" |
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93 " movl $1,%0 # We have CPUID support \n" |
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94 "1: \n" |
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95 : "=m" (has_CPUID) |
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96 : |
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97 : "%rax", "%rcx" |
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98 ); |
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99 #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) |
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100 __asm { |
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101 pushfd ; Get original EFLAGS |
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102 pop eax |
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103 mov ecx, eax |
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104 xor eax, 200000h ; Flip ID bit in EFLAGS |
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105 push eax ; Save new EFLAGS value on stack |
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106 popfd ; Replace current EFLAGS value |
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107 pushfd ; Get new EFLAGS |
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108 pop eax ; Store new EFLAGS in EAX |
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109 xor eax, ecx ; Can not toggle ID bit, |
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110 jz done ; Processor=80486 |
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111 mov has_CPUID,1 ; We have CPUID support |
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112 done: |
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113 } |
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114 #elif defined(__sun) && defined(__i386) |
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115 __asm ( |
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116 " pushfl \n" |
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117 " popl %eax \n" |
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118 " movl %eax,%ecx \n" |
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119 " xorl $0x200000,%eax \n" |
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120 " pushl %eax \n" |
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121 " popfl \n" |
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122 " pushfl \n" |
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123 " popl %eax \n" |
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124 " xorl %ecx,%eax \n" |
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125 " jz 1f \n" |
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126 " movl $1,-8(%ebp) \n" |
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127 "1: \n" |
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128 ); |
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129 #elif defined(__sun) && defined(__amd64) |
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130 __asm ( |
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131 " pushfq \n" |
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132 " popq %rax \n" |
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133 " movq %rax,%rcx \n" |
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134 " xorl $0x200000,%eax \n" |
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135 " pushq %rax \n" |
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136 " popfq \n" |
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137 " pushfq \n" |
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138 " popq %rax \n" |
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139 " xorl %ecx,%eax \n" |
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140 " jz 1f \n" |
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141 " movl $1,-8(%rbp) \n" |
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142 "1: \n" |
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143 ); |
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144 #endif |
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145 /* *INDENT-ON* */ |
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146 return has_CPUID; |
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147 } |
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148 |
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149 static __inline__ int |
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150 CPU_getCPUIDFeatures(void) |
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151 { |
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152 int features = 0; |
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153 /* *INDENT-OFF* */ |
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154 #if defined(__GNUC__) && defined(i386) |
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155 __asm__ ( |
3420 | 156 " pushl %%ebx\n" |
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157 " xorl %%eax,%%eax # Set up for CPUID instruction \n" |
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158 " cpuid # Get and save vendor ID \n" |
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159 " cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n" |
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160 " jl 1f # We dont have the CPUID instruction\n" |
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161 " xorl %%eax,%%eax \n" |
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162 " incl %%eax \n" |
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163 " cpuid # Get family/model/stepping/features\n" |
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164 " movl %%edx,%0 \n" |
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165 "1: \n" |
3420 | 166 " popl %%ebx\n" |
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167 : "=m" (features) |
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168 : |
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169 : "%eax", "%ecx", "%edx" |
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170 ); |
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171 #elif defined(__GNUC__) && defined(__x86_64__) |
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172 __asm__ ( |
3420 | 173 " pushq %%rbx\n" |
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174 " xorl %%eax,%%eax # Set up for CPUID instruction \n" |
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175 " cpuid # Get and save vendor ID \n" |
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176 " cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n" |
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177 " jl 1f # We dont have the CPUID instruction\n" |
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178 " xorl %%eax,%%eax \n" |
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179 " incl %%eax \n" |
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180 " cpuid # Get family/model/stepping/features\n" |
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181 " movl %%edx,%0 \n" |
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182 "1: \n" |
3420 | 183 " popq %%rbx\n" |
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184 : "=m" (features) |
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185 : |
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186 : "%rax", "%rcx", "%rdx" |
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187 ); |
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188 #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) |
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189 __asm { |
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190 xor eax, eax ; Set up for CPUID instruction |
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191 cpuid ; Get and save vendor ID |
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192 cmp eax, 1 ; Make sure 1 is valid input for CPUID |
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193 jl done ; We dont have the CPUID instruction |
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194 xor eax, eax |
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195 inc eax |
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196 cpuid ; Get family/model/stepping/features |
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197 mov features, edx |
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198 done: |
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199 } |
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200 #elif defined(__sun) && (defined(__i386) || defined(__amd64)) |
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201 __asm( |
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202 " movl %ebx,%edi\n" |
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203 " xorl %eax,%eax \n" |
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204 " cpuid \n" |
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205 " cmpl $1,%eax \n" |
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206 " jl 1f \n" |
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207 " xorl %eax,%eax \n" |
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208 " incl %eax \n" |
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209 " cpuid \n" |
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210 #ifdef __i386 |
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211 " movl %edx,-8(%ebp) \n" |
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212 #else |
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213 " movl %edx,-8(%rbp) \n" |
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214 #endif |
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215 "1: \n" |
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216 " movl %edi,%ebx\n" ); |
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217 #endif |
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218 /* *INDENT-ON* */ |
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219 return features; |
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220 } |
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221 |
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222 static __inline__ int |
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223 CPU_getCPUIDFeaturesExt(void) |
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224 { |
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225 int features = 0; |
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226 /* *INDENT-OFF* */ |
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227 #if defined(__GNUC__) && defined(i386) |
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228 __asm__ ( |
3420 | 229 " pushl %%ebx\n" |
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230 " movl $0x80000000,%%eax # Query for extended functions \n" |
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Fixed bugs in CPU feature detection and added extended feature detection
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231 " cpuid # Get extended function limit \n" |
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Fixed bugs in CPU feature detection and added extended feature detection
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232 " cmpl $0x80000001,%%eax \n" |
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233 " jl 1f # Nope, we dont have function 800000001h\n" |
785
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Fixed bugs in CPU feature detection and added extended feature detection
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234 " movl $0x80000001,%%eax # Setup extended function 800000001h\n" |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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235 " cpuid # and get the information \n" |
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Fixed bugs in CPU feature detection and added extended feature detection
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236 " movl %%edx,%0 \n" |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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237 "1: \n" |
3420 | 238 " popl %%ebx\n" |
785
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Fixed bugs in CPU feature detection and added extended feature detection
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239 : "=m" (features) |
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Fixed bugs in CPU feature detection and added extended feature detection
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240 : |
3421
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cpuid doesn't actually change the flags register
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241 : "%eax", "%ecx", "%edx" |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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|
242 ); |
2915
deb377097225
Fixed CPU feature detection on x86_64 platform
Sam Lantinga <slouken@libsdl.org>
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243 #elif defined(__GNUC__) && defined (__x86_64__) |
deb377097225
Fixed CPU feature detection on x86_64 platform
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244 __asm__ ( |
3420 | 245 " pushq %%rbx\n" |
2915
deb377097225
Fixed CPU feature detection on x86_64 platform
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246 " movl $0x80000000,%%eax # Query for extended functions \n" |
deb377097225
Fixed CPU feature detection on x86_64 platform
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247 " cpuid # Get extended function limit \n" |
deb377097225
Fixed CPU feature detection on x86_64 platform
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248 " cmpl $0x80000001,%%eax \n" |
deb377097225
Fixed CPU feature detection on x86_64 platform
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249 " jl 1f # Nope, we dont have function 800000001h\n" |
deb377097225
Fixed CPU feature detection on x86_64 platform
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parents:
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changeset
|
250 " movl $0x80000001,%%eax # Setup extended function 800000001h\n" |
deb377097225
Fixed CPU feature detection on x86_64 platform
Sam Lantinga <slouken@libsdl.org>
parents:
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251 " cpuid # and get the information \n" |
deb377097225
Fixed CPU feature detection on x86_64 platform
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252 " movl %%edx,%0 \n" |
deb377097225
Fixed CPU feature detection on x86_64 platform
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253 "1: \n" |
3420 | 254 " popq %%rbx\n" |
2915
deb377097225
Fixed CPU feature detection on x86_64 platform
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|
255 : "=m" (features) |
deb377097225
Fixed CPU feature detection on x86_64 platform
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parents:
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|
256 : |
3421
7bc83a9e09fd
cpuid doesn't actually change the flags register
Sam Lantinga <slouken@libsdl.org>
parents:
3420
diff
changeset
|
257 : "%rax", "%rcx", "%rdx" |
2915
deb377097225
Fixed CPU feature detection on x86_64 platform
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
258 ); |
1442
e3242177fe4a
Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
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1426
diff
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|
259 #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
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|
260 __asm { |
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Fixed bugs in CPU feature detection and added extended feature detection
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|
261 mov eax,80000000h ; Query for extended functions |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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parents:
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262 cpuid ; Get extended function limit |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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263 cmp eax,80000001h |
787
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Date: Sat, 24 Jan 2004 14:49:58 +0100
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264 jl done ; Nope, we dont have function 800000001h |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
265 mov eax,80000001h ; Setup extended function 800000001h |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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parents:
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266 cpuid ; and get the information |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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parents:
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267 mov features,edx |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
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|
268 done: |
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Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
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|
269 } |
1229
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
270 #elif defined(__sun) && ( defined(__i386) || defined(__amd64) ) |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents:
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|
271 __asm ( |
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Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
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|
272 " movl %ebx,%edi\n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
273 " movl $0x80000000,%eax \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
274 " cpuid \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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changeset
|
275 " cmpl $0x80000001,%eax \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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changeset
|
276 " jl 1f \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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diff
changeset
|
277 " movl $0x80000001,%eax \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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changeset
|
278 " cpuid \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
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changeset
|
279 #ifdef __i386 |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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|
280 " movl %edx,-8(%ebp) \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
281 #else |
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Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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changeset
|
282 " movl %edx,-8(%rbp) \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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diff
changeset
|
283 #endif |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
284 "1: \n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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diff
changeset
|
285 " movl %edi,%ebx\n" |
1430f5fe092a
Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents:
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diff
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|
286 ); |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
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|
287 #endif |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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288 /* *INDENT-ON* */ |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
289 return features; |
785
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Fixed bugs in CPU feature detection and added extended feature detection
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|
290 } |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
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parents:
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|
291 |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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292 static __inline__ int |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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293 CPU_haveRDTSC(void) |
745
71ee03909f42
Greatly simplified the SDL CPU info code
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|
294 { |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
295 if (CPU_haveCPUID()) { |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
296 return (CPU_getCPUIDFeatures() & 0x00000010); |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
297 } |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
298 return 0; |
745
71ee03909f42
Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents:
739
diff
changeset
|
299 } |
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
300 |
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
301 static __inline__ int |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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changeset
|
302 CPU_haveMMX(void) |
745
71ee03909f42
Greatly simplified the SDL CPU info code
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parents:
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diff
changeset
|
303 { |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
304 if (CPU_haveCPUID()) { |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
305 return (CPU_getCPUIDFeatures() & 0x00800000); |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
306 } |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
307 return 0; |
745
71ee03909f42
Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents:
739
diff
changeset
|
308 } |
71ee03909f42
Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents:
739
diff
changeset
|
309 |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
310 static __inline__ int |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
311 CPU_haveMMXExt(void) |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
312 { |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
313 if (CPU_haveCPUID()) { |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
314 return (CPU_getCPUIDFeaturesExt() & 0x00400000); |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
315 } |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
316 return 0; |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
784
diff
changeset
|
317 } |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
784
diff
changeset
|
318 |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
319 static __inline__ int |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
320 CPU_have3DNow(void) |
745
71ee03909f42
Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents:
739
diff
changeset
|
321 { |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
322 if (CPU_haveCPUID()) { |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
323 return (CPU_getCPUIDFeaturesExt() & 0x80000000); |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
324 } |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
325 return 0; |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
784
diff
changeset
|
326 } |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
784
diff
changeset
|
327 |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
328 static __inline__ int |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
329 CPU_have3DNowExt(void) |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
784
diff
changeset
|
330 { |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
331 if (CPU_haveCPUID()) { |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
332 return (CPU_getCPUIDFeaturesExt() & 0x40000000); |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
333 } |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
334 return 0; |
745
71ee03909f42
Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents:
739
diff
changeset
|
335 } |
71ee03909f42
Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents:
739
diff
changeset
|
336 |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
337 static __inline__ int |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
338 CPU_haveSSE(void) |
745
71ee03909f42
Greatly simplified the SDL CPU info code
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parents:
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diff
changeset
|
339 { |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
1864
diff
changeset
|
340 if (CPU_haveCPUID()) { |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
341 return (CPU_getCPUIDFeatures() & 0x02000000); |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
342 } |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
diff
changeset
|
343 return 0; |
785
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
784
diff
changeset
|
344 } |
ca06a994f03c
Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents:
784
diff
changeset
|
345 |
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
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changeset
|
346 static __inline__ int |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1864
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347 CPU_haveSSE2(void) |
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348 { |
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349 if (CPU_haveCPUID()) { |
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350 return (CPU_getCPUIDFeatures() & 0x04000000); |
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351 } |
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352 return 0; |
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353 } |
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354 |
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355 static __inline__ int |
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356 CPU_haveAltiVec(void) |
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357 { |
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358 volatile int altivec = 0; |
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359 #if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__)) |
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360 int selectors[2] = { CTL_HW, HW_VECTORUNIT }; |
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361 int hasVectorUnit = 0; |
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362 size_t length = sizeof(hasVectorUnit); |
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363 int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0); |
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364 if (0 == error) |
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365 altivec = (hasVectorUnit != 0); |
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366 #elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP |
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367 void (*handler) (int sig); |
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368 handler = signal(SIGILL, illegal_instruction); |
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369 if (setjmp(jmpbuf) == 0) { |
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370 asm volatile ("mtspr 256, %0\n\t" "vand %%v0, %%v0, %%v0"::"r" (-1)); |
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371 altivec = 1; |
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372 } |
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373 signal(SIGILL, handler); |
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374 #endif |
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375 return altivec; |
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376 } |
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377 |
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378 static Uint32 SDL_CPUFeatures = 0xFFFFFFFF; |
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379 |
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380 static Uint32 |
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381 SDL_GetCPUFeatures(void) |
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382 { |
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383 if (SDL_CPUFeatures == 0xFFFFFFFF) { |
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384 SDL_CPUFeatures = 0; |
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385 if (CPU_haveRDTSC()) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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386 SDL_CPUFeatures |= CPU_HAS_RDTSC; |
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387 } |
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388 if (CPU_haveMMX()) { |
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389 SDL_CPUFeatures |= CPU_HAS_MMX; |
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390 } |
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391 if (CPU_haveMMXExt()) { |
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392 SDL_CPUFeatures |= CPU_HAS_MMXEXT; |
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393 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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394 if (CPU_have3DNow()) { |
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395 SDL_CPUFeatures |= CPU_HAS_3DNOW; |
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396 } |
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397 if (CPU_have3DNowExt()) { |
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398 SDL_CPUFeatures |= CPU_HAS_3DNOWEXT; |
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399 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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400 if (CPU_haveSSE()) { |
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401 SDL_CPUFeatures |= CPU_HAS_SSE; |
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402 } |
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403 if (CPU_haveSSE2()) { |
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404 SDL_CPUFeatures |= CPU_HAS_SSE2; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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405 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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406 if (CPU_haveAltiVec()) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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407 SDL_CPUFeatures |= CPU_HAS_ALTIVEC; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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408 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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409 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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410 return SDL_CPUFeatures; |
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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411 } |
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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412 |
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413 SDL_bool |
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414 SDL_HasRDTSC(void) |
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Greatly simplified the SDL CPU info code
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415 { |
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416 if (SDL_GetCPUFeatures() & CPU_HAS_RDTSC) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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417 return SDL_TRUE; |
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418 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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419 return SDL_FALSE; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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420 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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421 |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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422 SDL_bool |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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423 SDL_HasMMX(void) |
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424 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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425 if (SDL_GetCPUFeatures() & CPU_HAS_MMX) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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426 return SDL_TRUE; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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427 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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428 return SDL_FALSE; |
745
71ee03909f42
Greatly simplified the SDL CPU info code
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429 } |
71ee03909f42
Greatly simplified the SDL CPU info code
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430 |
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431 SDL_bool |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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432 SDL_HasMMXExt(void) |
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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433 { |
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434 if (SDL_GetCPUFeatures() & CPU_HAS_MMXEXT) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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435 return SDL_TRUE; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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436 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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437 return SDL_FALSE; |
739
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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438 } |
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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439 |
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440 SDL_bool |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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441 SDL_Has3DNow(void) |
804
b2fda076b02e
*** empty log message ***
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442 { |
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443 if (SDL_GetCPUFeatures() & CPU_HAS_3DNOW) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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444 return SDL_TRUE; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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445 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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446 return SDL_FALSE; |
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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|
447 } |
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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448 |
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449 SDL_bool |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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450 SDL_Has3DNowExt(void) |
804
b2fda076b02e
*** empty log message ***
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451 { |
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452 if (SDL_GetCPUFeatures() & CPU_HAS_3DNOWEXT) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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453 return SDL_TRUE; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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454 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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455 return SDL_FALSE; |
804
b2fda076b02e
*** empty log message ***
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456 } |
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457 |
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458 SDL_bool |
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459 SDL_HasSSE(void) |
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460 { |
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461 if (SDL_GetCPUFeatures() & CPU_HAS_SSE) { |
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462 return SDL_TRUE; |
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463 } |
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464 return SDL_FALSE; |
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465 } |
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466 |
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467 SDL_bool |
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468 SDL_HasSSE2(void) |
804
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469 { |
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470 if (SDL_GetCPUFeatures() & CPU_HAS_SSE2) { |
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471 return SDL_TRUE; |
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472 } |
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473 return SDL_FALSE; |
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474 } |
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475 |
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476 SDL_bool |
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477 SDL_HasAltiVec(void) |
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478 { |
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479 if (SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC) { |
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480 return SDL_TRUE; |
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481 } |
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482 return SDL_FALSE; |
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483 } |
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484 |
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485 #ifdef TEST_MAIN |
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486 |
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487 #include <stdio.h> |
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488 |
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489 int |
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490 main() |
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491 { |
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492 printf("RDTSC: %d\n", SDL_HasRDTSC()); |
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493 printf("MMX: %d\n", SDL_HasMMX()); |
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494 printf("MMXExt: %d\n", SDL_HasMMXExt()); |
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495 printf("3DNow: %d\n", SDL_Has3DNow()); |
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496 printf("3DNowExt: %d\n", SDL_Has3DNowExt()); |
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497 printf("SSE: %d\n", SDL_HasSSE()); |
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498 printf("SSE2: %d\n", SDL_HasSSE2()); |
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499 printf("AltiVec: %d\n", SDL_HasAltiVec()); |
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500 return 0; |
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501 } |
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502 |
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503 #endif /* TEST_MAIN */ |
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504 |
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505 /* vi: set ts=4 sw=4 expandtab: */ |