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#endif
#ifdef __HAIKU__
# include <FindDirectory.h>
#endif
#ifdef __QNX__
# include <sys/syspage.h>
#endif
#if defined(OF_X86_64_ASM) || defined(OF_X86_ASM)
struct x86_regs {
uint32_t eax, ebx, ecx, edx;
};
#endif
static size_t pageSize;
static size_t numberOfCPUs;
#if defined(OF_X86_64_ASM)
static OF_INLINE struct x86_regs OF_CONST_FUNC
x86_cpuid(uint32_t eax, uint32_t ecx)
{
struct x86_regs regs;
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#endif
#ifdef __HAIKU__
# include <FindDirectory.h>
#endif
#ifdef __QNX__
# include <sys/syspage.h>
#endif
#ifdef OF_PPC_ASM
# include <setjmp.h>
#endif
#if defined(OF_X86_64_ASM) || defined(OF_X86_ASM)
struct x86_regs {
uint32_t eax, ebx, ecx, edx;
};
#endif
static size_t pageSize;
static size_t numberOfCPUs;
#ifdef OF_PPC_ASM
static sig_atomic_t altiVecSupported;
static sigjmp_buf altiVecJumpBuffer;
#endif
#if defined(OF_X86_64_ASM)
static OF_INLINE struct x86_regs OF_CONST_FUNC
x86_cpuid(uint32_t eax, uint32_t ecx)
{
struct x86_regs regs;
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: "=a"(regs.eax), "=r"(regs.ebx), "=c"(regs.ecx), "=d"(regs.edx)
: "a"(eax), "c"(ecx)
);
return regs;
}
#endif
@implementation OFSystemInfo
+ (void)initialize
{
if (self != [OFSystemInfo class])
return;
#if defined(_WIN32)
SYSTEM_INFO si;
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: "=a"(regs.eax), "=r"(regs.ebx), "=c"(regs.ecx), "=d"(regs.edx)
: "a"(eax), "c"(ecx)
);
return regs;
}
#endif
#ifdef OF_PPC_ASM
static void
altiVecSIGILLHandler(int signal)
{
altiVecSupported = 0;
siglongjmp(altiVecJumpBuffer, 1);
}
#endif
@implementation OFSystemInfo
#ifdef OF_PPC_ASM
+ (void)load
{
altiVecSupported = 1;
if (sigsetjmp(altiVecJumpBuffer, 1) == 0) {
signal(SIGILL, altiVecSIGILLHandler);
__asm__ __volatile__ (
"vor v0, v0, v0"
);
}
signal(SIGILL, SIG_DFL);
}
#endif
+ (void)initialize
{
if (self != [OFSystemInfo class])
return;
#if defined(_WIN32)
SYSTEM_INFO si;
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}
+ (bool)supportsAVX2
{
return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
}
#endif
@end
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}
+ (bool)supportsAVX2
{
return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
}
#endif
#ifdef OF_PPC_ASM
+ (bool)supportsAltiVec
{
return altiVecSupported;
}
#endif
@end
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