SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
--HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401938
This commit is contained in:
Sam Lantinga
parent
91a32b77a2
commit
0f030a1802
686 changed files with 117556 additions and 98661 deletions
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@ -27,7 +27,7 @@
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#include "SDL_cpuinfo.h"
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#if defined(__MACOSX__) && defined(__ppc__)
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#include <sys/sysctl.h> /* For AltiVec check */
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#include <sys/sysctl.h> /* For AltiVec check */
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#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
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#include <signal.h>
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#include <setjmp.h>
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@ -47,15 +47,18 @@
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the idea is borrowed from the libmpeg2 library - thanks!
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*/
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static jmp_buf jmpbuf;
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static void illegal_instruction(int sig)
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static void
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illegal_instruction(int sig)
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{
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longjmp(jmpbuf, 1);
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longjmp(jmpbuf, 1);
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}
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#endif /* HAVE_SETJMP */
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static __inline__ int CPU_haveCPUID(void)
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static __inline__ int
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CPU_haveCPUID(void)
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{
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int has_CPUID = 0;
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int has_CPUID = 0;
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/* *INDENT-OFF* */
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#if defined(__GNUC__) && defined(i386)
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__asm__ (
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" pushfl # Get original EFLAGS \n"
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@ -140,12 +143,15 @@ done:
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"1: \n"
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);
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#endif
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return has_CPUID;
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/* *INDENT-ON* */
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return has_CPUID;
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}
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static __inline__ int CPU_getCPUIDFeatures(void)
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static __inline__ int
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CPU_getCPUIDFeatures(void)
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{
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int features = 0;
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int features = 0;
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/* *INDENT-OFF* */
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#if defined(__GNUC__) && ( defined(i386) || defined(__x86_64__) )
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__asm__ (
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" movl %%ebx,%%edi\n"
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@ -193,12 +199,15 @@ done:
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"1: \n"
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" movl %edi,%ebx\n" );
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#endif
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return features;
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/* *INDENT-ON* */
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return features;
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}
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static __inline__ int CPU_getCPUIDFeaturesExt(void)
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static __inline__ int
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CPU_getCPUIDFeaturesExt(void)
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{
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int features = 0;
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int features = 0;
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/* *INDENT-OFF* */
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#if defined(__GNUC__) && (defined(i386) || defined (__x86_64__) )
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__asm__ (
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" movl %%ebx,%%edi\n"
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@ -244,203 +253,221 @@ done:
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" movl %edi,%ebx\n"
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);
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#endif
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return features;
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/* *INDENT-ON* */
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return features;
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}
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static __inline__ int CPU_haveRDTSC(void)
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static __inline__ int
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CPU_haveRDTSC(void)
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{
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if ( CPU_haveCPUID() ) {
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return (CPU_getCPUIDFeatures() & 0x00000010);
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}
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return 0;
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if (CPU_haveCPUID()) {
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return (CPU_getCPUIDFeatures() & 0x00000010);
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}
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return 0;
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}
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static __inline__ int CPU_haveMMX(void)
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static __inline__ int
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CPU_haveMMX(void)
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{
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if ( CPU_haveCPUID() ) {
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return (CPU_getCPUIDFeatures() & 0x00800000);
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}
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return 0;
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if (CPU_haveCPUID()) {
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return (CPU_getCPUIDFeatures() & 0x00800000);
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}
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return 0;
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}
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static __inline__ int CPU_haveMMXExt(void)
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static __inline__ int
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CPU_haveMMXExt(void)
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{
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if ( CPU_haveCPUID() ) {
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return (CPU_getCPUIDFeaturesExt() & 0x00400000);
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}
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return 0;
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if (CPU_haveCPUID()) {
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return (CPU_getCPUIDFeaturesExt() & 0x00400000);
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}
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return 0;
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}
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static __inline__ int CPU_have3DNow(void)
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static __inline__ int
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CPU_have3DNow(void)
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{
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if ( CPU_haveCPUID() ) {
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return (CPU_getCPUIDFeaturesExt() & 0x80000000);
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}
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return 0;
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if (CPU_haveCPUID()) {
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return (CPU_getCPUIDFeaturesExt() & 0x80000000);
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}
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return 0;
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}
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static __inline__ int CPU_have3DNowExt(void)
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static __inline__ int
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CPU_have3DNowExt(void)
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{
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if ( CPU_haveCPUID() ) {
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return (CPU_getCPUIDFeaturesExt() & 0x40000000);
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}
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return 0;
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if (CPU_haveCPUID()) {
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return (CPU_getCPUIDFeaturesExt() & 0x40000000);
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}
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return 0;
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}
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static __inline__ int CPU_haveSSE(void)
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static __inline__ int
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CPU_haveSSE(void)
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{
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if ( CPU_haveCPUID() ) {
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return (CPU_getCPUIDFeatures() & 0x02000000);
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}
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return 0;
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if (CPU_haveCPUID()) {
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return (CPU_getCPUIDFeatures() & 0x02000000);
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}
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return 0;
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}
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static __inline__ int CPU_haveSSE2(void)
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static __inline__ int
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CPU_haveSSE2(void)
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{
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if ( CPU_haveCPUID() ) {
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return (CPU_getCPUIDFeatures() & 0x04000000);
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}
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return 0;
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if (CPU_haveCPUID()) {
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return (CPU_getCPUIDFeatures() & 0x04000000);
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}
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return 0;
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}
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static __inline__ int CPU_haveAltiVec(void)
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static __inline__ int
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CPU_haveAltiVec(void)
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{
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volatile int altivec = 0;
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volatile int altivec = 0;
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#if defined(__MACOSX__) && defined(__ppc__)
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int selectors[2] = { CTL_HW, HW_VECTORUNIT };
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int hasVectorUnit = 0;
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size_t length = sizeof(hasVectorUnit);
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int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);
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if( 0 == error )
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altivec = (hasVectorUnit != 0);
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int selectors[2] = { CTL_HW, HW_VECTORUNIT };
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int hasVectorUnit = 0;
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size_t length = sizeof(hasVectorUnit);
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int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);
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if (0 == error)
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altivec = (hasVectorUnit != 0);
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#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
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void (*handler)(int sig);
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handler = signal(SIGILL, illegal_instruction);
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if ( setjmp(jmpbuf) == 0 ) {
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asm volatile ("mtspr 256, %0\n\t"
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"vand %%v0, %%v0, %%v0"
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:
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: "r" (-1));
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altivec = 1;
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}
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signal(SIGILL, handler);
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void (*handler) (int sig);
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handler = signal(SIGILL, illegal_instruction);
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if (setjmp(jmpbuf) == 0) {
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asm volatile ("mtspr 256, %0\n\t" "vand %%v0, %%v0, %%v0"::"r" (-1));
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altivec = 1;
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}
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signal(SIGILL, handler);
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#endif
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return altivec;
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return altivec;
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}
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static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
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static Uint32 SDL_GetCPUFeatures(void)
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static Uint32
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SDL_GetCPUFeatures(void)
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{
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if ( SDL_CPUFeatures == 0xFFFFFFFF ) {
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SDL_CPUFeatures = 0;
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if ( CPU_haveRDTSC() ) {
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SDL_CPUFeatures |= CPU_HAS_RDTSC;
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}
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if ( CPU_haveMMX() ) {
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SDL_CPUFeatures |= CPU_HAS_MMX;
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}
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if ( CPU_haveMMXExt() ) {
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SDL_CPUFeatures |= CPU_HAS_MMXEXT;
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}
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if ( CPU_have3DNow() ) {
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SDL_CPUFeatures |= CPU_HAS_3DNOW;
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}
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if ( CPU_have3DNowExt() ) {
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SDL_CPUFeatures |= CPU_HAS_3DNOWEXT;
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}
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if ( CPU_haveSSE() ) {
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SDL_CPUFeatures |= CPU_HAS_SSE;
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}
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if ( CPU_haveSSE2() ) {
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SDL_CPUFeatures |= CPU_HAS_SSE2;
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}
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if ( CPU_haveAltiVec() ) {
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SDL_CPUFeatures |= CPU_HAS_ALTIVEC;
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}
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}
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return SDL_CPUFeatures;
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if (SDL_CPUFeatures == 0xFFFFFFFF) {
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SDL_CPUFeatures = 0;
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if (CPU_haveRDTSC()) {
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SDL_CPUFeatures |= CPU_HAS_RDTSC;
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}
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if (CPU_haveMMX()) {
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SDL_CPUFeatures |= CPU_HAS_MMX;
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}
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if (CPU_haveMMXExt()) {
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SDL_CPUFeatures |= CPU_HAS_MMXEXT;
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}
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if (CPU_have3DNow()) {
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SDL_CPUFeatures |= CPU_HAS_3DNOW;
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}
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if (CPU_have3DNowExt()) {
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SDL_CPUFeatures |= CPU_HAS_3DNOWEXT;
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}
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if (CPU_haveSSE()) {
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SDL_CPUFeatures |= CPU_HAS_SSE;
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}
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if (CPU_haveSSE2()) {
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SDL_CPUFeatures |= CPU_HAS_SSE2;
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}
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if (CPU_haveAltiVec()) {
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SDL_CPUFeatures |= CPU_HAS_ALTIVEC;
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}
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}
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return SDL_CPUFeatures;
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}
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SDL_bool SDL_HasRDTSC(void)
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SDL_bool
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SDL_HasRDTSC(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_RDTSC ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_RDTSC) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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SDL_bool SDL_HasMMX(void)
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SDL_bool
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SDL_HasMMX(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_MMX ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_MMX) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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SDL_bool SDL_HasMMXExt(void)
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SDL_bool
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SDL_HasMMXExt(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_MMXEXT ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_MMXEXT) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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SDL_bool SDL_Has3DNow(void)
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SDL_bool
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SDL_Has3DNow(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOW ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_3DNOW) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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SDL_bool SDL_Has3DNowExt(void)
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SDL_bool
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SDL_Has3DNowExt(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOWEXT ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_3DNOWEXT) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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SDL_bool SDL_HasSSE(void)
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SDL_bool
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SDL_HasSSE(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_SSE ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_SSE) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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SDL_bool SDL_HasSSE2(void)
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SDL_bool
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SDL_HasSSE2(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_SSE2 ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_SSE2) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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SDL_bool SDL_HasAltiVec(void)
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SDL_bool
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SDL_HasAltiVec(void)
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{
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if ( SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC ) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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if (SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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#ifdef TEST_MAIN
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#include <stdio.h>
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int main()
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int
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main()
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{
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printf("RDTSC: %d\n", SDL_HasRDTSC());
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printf("MMX: %d\n", SDL_HasMMX());
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printf("MMXExt: %d\n", SDL_HasMMXExt());
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printf("3DNow: %d\n", SDL_Has3DNow());
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printf("3DNowExt: %d\n", SDL_Has3DNowExt());
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printf("SSE: %d\n", SDL_HasSSE());
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printf("SSE2: %d\n", SDL_HasSSE2());
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printf("AltiVec: %d\n", SDL_HasAltiVec());
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return 0;
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printf("RDTSC: %d\n", SDL_HasRDTSC());
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printf("MMX: %d\n", SDL_HasMMX());
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printf("MMXExt: %d\n", SDL_HasMMXExt());
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printf("3DNow: %d\n", SDL_Has3DNow());
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printf("3DNowExt: %d\n", SDL_Has3DNowExt());
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printf("SSE: %d\n", SDL_HasSSE());
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printf("SSE2: %d\n", SDL_HasSSE2());
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printf("AltiVec: %d\n", SDL_HasAltiVec());
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return 0;
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}
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#endif /* TEST_MAIN */
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/* vi: set ts=4 sw=4 expandtab: */
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