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Refactored code 

Former-commit-id: b4f0723b03152a657acd41758c297ac4a9bf1a50
This commit is contained in:
Lynix 2015-02-24 16:16:56 +01:00
parent ee6ca790a5
commit 60b6b2f4de
1 changed files with 25 additions and 27 deletions
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52
src/Nazara/Core/Win32/HardwareInfoImpl.cpp
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@ -15,12 +15,14 @@
void NzHardwareInfoImpl::Cpuid(nzUInt32 code, nzUInt32 result[4])
{
#if defined(NAZARA_COMPILER_MSVC)
static_assert(sizeof(nzUInt32) == sizeof(int), "Assertion failed");
__cpuid(reinterpret_cast<int*>(result), static_cast<int>(code)); // Visual propose une fonction intrinsèque pour le cpuid
#elif defined(NAZARA_COMPILER_CLANG) || defined(NAZARA_COMPILER_GCC) || defined(NAZARA_COMPILER_INTEL)
// Source: http://stackoverflow.com/questions/1666093/cpuid-implementations-in-c
asm volatile ("cpuid" // Besoin d'être volatile ?
: "=a" (result[0]), "=b" (result[1]), "=c" (result[2]), "=d" (result[3]) // output
: "a" (code), "c" (0)); // input
: "=a" (result[0]), "=b" (result[1]), "=c" (result[2]), "=d" (result[3]) // output
: "a" (code), "c" (0)); // input
#else
NazaraInternalError("Cpuid has been called although it is not supported");
#endif
@ -37,10 +39,10 @@ unsigned int NzHardwareInfoImpl::GetProcessorCount()
bool NzHardwareInfoImpl::IsCpuidSupported()
{
#if defined(NAZARA_COMPILER_MSVC)
#ifdef NAZARA_PLATFORM_x64
#ifdef NAZARA_PLATFORM_x64
return true; // Toujours supporté sur un processeur 64 bits
#else
#else
#if defined(NAZARA_COMPILER_MSVC)
int supported;
__asm
{
@ -59,31 +61,27 @@ bool NzHardwareInfoImpl::IsCpuidSupported()
};
return supported != 0;
#endif // NAZARA_PLATFORM_x64
#elif defined(NAZARA_COMPILER_CLANG) || defined(NAZARA_COMPILER_GCC) || defined(NAZARA_COMPILER_INTEL)
#ifdef NAZARA_PLATFORM_x64
return true; // Toujours supporté sur un processeur 64 bits
#else
#elif defined(NAZARA_COMPILER_CLANG) || defined(NAZARA_COMPILER_GCC) || defined(NAZARA_COMPILER_INTEL)
int supported;
asm volatile (" pushfl\n"
" pop %%eax\n"
" mov %%eax, %%ecx\n"
" xor $0x200000, %%eax\n"
" push %%eax\n"
" popfl\n"
" pushfl\n"
" pop %%eax\n"
" xor %%ecx, %%eax\n"
" mov %%eax, %0\n"
" push %%ecx\n"
" popfl"
: "=m" (supported) // output
: // input
: "eax", "ecx", "memory"); // clobbered register
asm volatile (" pushfl\n"
" pop %%eax\n"
" mov %%eax, %%ecx\n"
" xor $0x200000, %%eax\n"
" push %%eax\n"
" popfl\n"
" pushfl\n"
" pop %%eax\n"
" xor %%ecx, %%eax\n"
" mov %%eax, %0\n"
" push %%ecx\n"
" popfl"
: "=m" (supported) // output
: // input
: "eax", "ecx", "memory"); // clobbered register
return supported != 0;
#endif // NAZARA_PLATFORM_x64
#else
#else
return false;
#endif
#endif
}