rpcs3/Utilities/sysinfo.cpp

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#include "sysinfo.h"
#include "StrFmt.h"
#ifdef _WIN32
#include "windows.h"
#else
#include <unistd.h>
#endif
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bool utils::has_ssse3()
{
static const bool g_value = get_cpuid(0, 0)[0] >= 0x1 && get_cpuid(1, 0)[2] & 0x200;
return g_value;
}
bool utils::has_sse41()
{
static const bool g_value = get_cpuid(0, 0)[0] >= 0x1 && get_cpuid(1, 0)[2] & 0x80000;
return g_value;
}
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bool utils::has_avx()
{
static const bool g_value = get_cpuid(0, 0)[0] >= 0x1 && get_cpuid(1, 0)[2] & 0x10000000 && (get_cpuid(1, 0)[2] & 0x0C000000) == 0x0C000000 && (get_xgetbv(0) & 0x6) == 0x6;
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return g_value;
}
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bool utils::has_avx2()
{
static const bool g_value = get_cpuid(0, 0)[0] >= 0x7 && get_cpuid(7, 0)[1] & 0x20 && (get_cpuid(1, 0)[2] & 0x0C000000) == 0x0C000000 && (get_xgetbv(0) & 0x6) == 0x6;
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return g_value;
}
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bool utils::has_rtm()
{
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static const bool g_value = get_cpuid(0, 0)[0] >= 0x7 && (get_cpuid(7, 0)[1] & 0x800) == 0x800;
return g_value;
}
bool utils::has_mpx()
{
static const bool g_value = get_cpuid(0, 0)[0] >= 0x7 && (get_cpuid(7, 0)[1] & 0x4000) == 0x4000;
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return g_value;
}
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bool utils::has_512()
{
// Check AVX512F, AVX512CD, AVX512DQ, AVX512BW, AVX512VL extensions (Skylake-X level support)
static const bool g_value = get_cpuid(0, 0)[0] >= 0x7 && (get_cpuid(7, 0)[1] & 0xd0030000) == 0xd0030000 && (get_cpuid(1,0)[2] & 0x0C000000) == 0x0C000000 && (get_xgetbv(0) & 0xe6) == 0xe6;
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return g_value;
}
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bool utils::has_xop()
{
static const bool g_value = has_avx() && get_cpuid(0x80000001, 0)[2] & 0x800;
return g_value;
}
std::string utils::get_system_info()
{
std::string result;
std::string brand;
if (get_cpuid(0x80000000, 0)[0] >= 0x80000004)
{
for (u32 i = 0; i < 3; i++)
{
brand.append(reinterpret_cast<const char*>(get_cpuid(0x80000002 + i, 0).data()), 16);
}
}
else
{
brand = "Unknown CPU";
}
brand.erase(0, brand.find_first_not_of(' '));
brand.erase(brand.find_last_not_of(' ') + 1);
while (auto found = brand.find(" ") + 1)
{
brand.erase(brand.begin() + found);
}
#ifdef _WIN32
::SYSTEM_INFO sysInfo;
::GetNativeSystemInfo(&sysInfo);
::MEMORYSTATUSEX memInfo;
memInfo.dwLength = sizeof(memInfo);
::GlobalMemoryStatusEx(&memInfo);
const u32 num_proc = sysInfo.dwNumberOfProcessors;
const u64 mem_total = memInfo.ullTotalPhys;
#else
const u32 num_proc = ::sysconf(_SC_NPROCESSORS_ONLN);
const u64 mem_total = ::sysconf(_SC_PHYS_PAGES) * ::sysconf(_SC_PAGE_SIZE);
#endif
fmt::append(result, "%s | %d Threads | %.2f GiB RAM", brand, num_proc, mem_total / (1024.0f * 1024 * 1024));
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if (has_avx())
{
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result += " | AVX";
if (has_avx2())
{
result += '+';
}
if (has_512())
{
result += '+';
}
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if (has_xop())
{
result += 'x';
}
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}
if (has_rtm())
{
result += " | TSX";
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if (!has_mpx())
{
result += " disabled by default";
}
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}
return result;
}