aleajactaest/khanat-opennel-code
1
0
Fork 0
mirror of https://port.numenaute.org/aleajactaest/khanat-opennel-code.git synced 2024-11-23 07:36:16 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Changed: Use same _mm_getcsr and __cpuid intrinsics everywhere

Browse source
This commit is contained in:
kervala 2016-01-04 15:40:45 +01:00
parent 6dde138039
commit 8c3da3d5d7
1 changed files with 5 additions and 80 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

85
code/nel/src/misc/system_info.cpp
View file

@ -955,19 +955,8 @@ static bool DetectSSE()
// check OS support for SSE // check OS support for SSE
try try
{ {
#ifdef NL_OS_WINDOWS
#ifdef NL_NO_ASM
unsigned int tmp = _mm_getcsr(); unsigned int tmp = _mm_getcsr();
nlunreferenced(tmp); nlunreferenced(tmp);
#else
__asm
{
xorps xmm0, xmm0 // Streaming SIMD Extension
}
#endif // NL_NO_ASM
#elif NL_OS_UNIX
__asm__ __volatile__ ("xorps %xmm0, %xmm0;");
#endif // NL_OS_UNIX
} }
catch(...) catch(...)
{ {
@ -989,74 +978,10 @@ bool CSystemInfo::_HaveSSE = DetectSSE ();
bool CSystemInfo::hasCPUID () bool CSystemInfo::hasCPUID ()
{ {
#ifdef NL_CPU_INTEL #ifdef NL_CPU_INTEL
uint32 result = 0; uint32 result = 0;
#ifdef NL_OS_WINDOWS sint32 CPUInfo[4] = {-1};
#ifdef NL_NO_ASM nlcpuid(CPUInfo, 0);
sint32 CPUInfo[4] = {-1}; if (CPUInfo[3] != -1) result = 1;
nlcpuid(CPUInfo, 0);
if (CPUInfo[3] != -1) result = 1;
#else
__asm
{
pushad
pushfd
// If ID bit of EFLAGS can change, then cpuid is available
pushfd
pop eax // Get EFLAG
mov ecx,eax
xor eax,0x200000 // Flip ID bit
push eax
popfd // Write EFLAGS
pushfd
pop eax // read back EFLAG
xor eax,ecx
je noCpuid // no flip -> no CPUID instr.
popfd // restore state
popad
mov result, 1
jmp CPUIDPresent
noCpuid:
popfd // restore state
popad
mov result, 0
CPUIDPresent:
}
#endif // NL_NO_ASM
#elif NL_OS_UNIX // NL_OS_WINDOWS
__asm__ __volatile__ (
/* Save Register */
"pushl %%ebp;"
"pushl %%ebx;"
"pushl %%edx;"
/* Check if this CPU supports cpuid */
"pushf;"
"pushf;"
"popl %%eax;"
"movl %%eax, %%ebx;"
"xorl $(1 << 21), %%eax;" // CPUID bit
"pushl %%eax;"
"popf;"
"pushf;"
"popl %%eax;"
"popf;" // Restore flags
"xorl %%ebx, %%eax;"
"jz NoCPUID;"
"movl $1, %0;"
"jmp CPUID;"
"NoCPUID:;"
"movl $0, %0;"
"CPUID:;"
"popl %%edx;"
"popl %%ebx;"
"popl %%ebp;"
:"=a"(result)
);
#endif // NL_OS_UNIX
return result == 1; return result == 1;
#else #else
return false; return false;
@ -1067,7 +992,7 @@ bool CSystemInfo::hasCPUID ()
uint32 CSystemInfo::getCPUID() uint32 CSystemInfo::getCPUID()
{ {
#ifdef NL_CPU_INTEL #ifdef NL_CPU_INTEL
if(hasCPUID()) if (hasCPUID())
{ {
uint32 result = 0; uint32 result = 0;
sint32 CPUInfo[4]; sint32 CPUInfo[4];