i2pd/libi2pd/CPU.cpp
r4sas fb420bb563
[cpu] more builtin version check changes
Signed-off-by: r4sas <r4sas@i2pmail.org>
2023-09-18 18:12:26 +00:00

69 lines
1.4 KiB
C++

/*
* Copyright (c) 2013-2023, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
* See full license text in LICENSE file at top of project tree
*/
#include "CPU.h"
#include "Log.h"
#ifndef bit_AES
#define bit_AES (1 << 25)
#endif
#if defined(__GNUC__) && __GNUC__ < 6 && IS_X86
#include <cpuid.h>
#endif
#ifdef _MSC_VER
#include <intrin.h>
#endif
namespace i2p
{
namespace cpu
{
bool aesni = false;
inline bool cpu_support_aes()
{
#if IS_X86
#if defined(__clang__)
# if (__clang_major__ >= 6)
__builtin_cpu_init();
# endif
return __builtin_cpu_supports("aes");
#elif (defined(__GNUC__) && __GNUC__ >= 6)
__builtin_cpu_init();
return __builtin_cpu_supports("aes");
#elif (defined(__GNUC__) && __GNUC__ < 6)
int cpu_info[4];
bool flag = false;
__cpuid(0, cpu_info[0], cpu_info[1], cpu_info[2], cpu_info[3]);
if (cpu_info[0] >= 0x00000001) {
__cpuid(0x00000001, cpu_info[0], cpu_info[1], cpu_info[2], cpu_info[3]);
flag = ((cpu_info[2] & bit_AES) != 0);
}
return flag;
#elif defined(_MSC_VER)
int cpu_info[4];
__cpuid(cpu_info, 1);
return ((cpu_info[2] & bit_AES) != 0);
#endif
#endif
return false;
}
void Detect(bool AesSwitch, bool force)
{
if ((cpu_support_aes() && AesSwitch) || (AesSwitch && force)) {
aesni = true;
}
LogPrint(eLogInfo, "AESNI ", (aesni ? "enabled" : "disabled"));
}
}
}