98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
// Copyright (C) 2015 Jérôme Leclercq
|
|
// This file is part of the "Nazara Engine - Core module"
|
|
// For conditions of distribution and use, see copyright notice in Config.hpp
|
|
|
|
#include <Nazara/Core/Win32/HardwareInfoImpl.hpp>
|
|
#include <Nazara/Core/Error.hpp>
|
|
#include <windows.h>
|
|
|
|
#ifdef NAZARA_COMPILER_MSVC
|
|
#include <intrin.h>
|
|
#endif
|
|
|
|
#include <Nazara/Core/Debug.hpp>
|
|
|
|
void NzHardwareInfoImpl::Cpuid(nzUInt32 functionId, nzUInt32 subFunctionId, nzUInt32 registers[4])
|
|
{
|
|
#if defined(NAZARA_COMPILER_MSVC)
|
|
static_assert(sizeof(nzUInt32) == sizeof(int), "Assertion failed");
|
|
|
|
// Visual propose une fonction intrinsèque pour le cpuid
|
|
__cpuidex(reinterpret_cast<int*>(registers), static_cast<int>(functionId), static_cast<int>(subFunctionId));
|
|
#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" (registers[0]), "=b" (registers[1]), "=c" (registers[2]), "=d" (registers[3]) // output
|
|
: "a" (functionId), "c" (subFunctionId)); // input
|
|
#else
|
|
NazaraInternalError("Cpuid has been called although it is not supported");
|
|
#endif
|
|
}
|
|
|
|
unsigned int NzHardwareInfoImpl::GetProcessorCount()
|
|
{
|
|
// Plus simple (et plus portable) que de passer par le CPUID
|
|
SYSTEM_INFO infos;
|
|
GetNativeSystemInfo(&infos);
|
|
|
|
return infos.dwNumberOfProcessors;
|
|
}
|
|
|
|
nzUInt64 NzHardwareInfoImpl::GetTotalMemory()
|
|
{
|
|
MEMORYSTATUSEX memStatus;
|
|
memStatus.dwLength = sizeof(memStatus);
|
|
GlobalMemoryStatusEx(&memStatus);
|
|
|
|
return memStatus.ullTotalPhys;
|
|
}
|
|
|
|
bool NzHardwareInfoImpl::IsCpuidSupported()
|
|
{
|
|
#ifdef NAZARA_PLATFORM_x64
|
|
return true; // Toujours supporté sur un processeur 64 bits
|
|
#else
|
|
#if defined(NAZARA_COMPILER_MSVC)
|
|
int supported;
|
|
__asm
|
|
{
|
|
pushfd
|
|
pop eax
|
|
mov ecx, eax
|
|
xor eax, 0x200000
|
|
push eax
|
|
popfd
|
|
pushfd
|
|
pop eax
|
|
xor eax, ecx
|
|
mov supported, eax
|
|
push ecx
|
|
popfd
|
|
};
|
|
|
|
return supported != 0;
|
|
#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
|
|
|
|
return supported != 0;
|
|
#else
|
|
return false;
|
|
#endif
|
|
#endif
|
|
}
|