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[cpu] remove avx detect and code blocks, try to switch to __builtin

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Signed-off-by: r4sas <r4sas@i2pmail.org>
This commit is contained in:
r4sas 2023-08-10 03:09:21 +03:00
parent 794fe41aa2
commit 1389b85028
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GPG key ID: 66F6C87B98EBCFE2
9 changed files with 20 additions and 68 deletions
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2
contrib/i2pd.conf
View file

@ -280,8 +280,6 @@ verify = true
[cpuext]
## Use CPU AES-NI instructions set when work with cryptography when available (default: true)
# aesni = true
## Use CPU AVX instructions set when work with cryptography when available (default: true)
# avx = true
## Force usage of CPU instructions set, even if they not found (default: false)
## DO NOT TOUCH that option if you really don't know what are you doing!
# force = false

3
daemon/Daemon.cpp
View file

@ -150,12 +150,11 @@ namespace util
bool precomputation; i2p::config::GetOption("precomputation.elgamal", precomputation);
bool aesni; i2p::config::GetOption("cpuext.aesni", aesni);
bool avx; i2p::config::GetOption("cpuext.avx", avx);
bool forceCpuExt; i2p::config::GetOption("cpuext.force", forceCpuExt);
bool ssu; i2p::config::GetOption("ssu", ssu);
if (!ssu && i2p::config::IsDefault ("precomputation.elgamal"))
precomputation = false; // we don't elgamal table if no ssu, unless it's specified explicitly
i2p::crypto::InitCrypto (precomputation, aesni, avx, forceCpuExt);
i2p::crypto::InitCrypto (precomputation, aesni, forceCpuExt);
i2p::transport::InitAddressFromIface (); // get address4/6 from interfaces

34
libi2pd/CPU.cpp
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020, The PurpleI2P Project
* Copyright (c) 2013-2023, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -7,52 +7,26 @@
*/
#include "CPU.h"
#if defined(__x86_64__) || defined(__i386__)
#include <cpuid.h>
#endif
#include "Log.h"
#ifndef bit_AES
#define bit_AES (1 << 25)
#endif
#ifndef bit_AVX
#define bit_AVX (1 << 28)
#endif
namespace i2p
{
namespace cpu
{
bool aesni = false;
bool avx = false;
void Detect(bool AesSwitch, bool AvxSwitch, bool force)
void Detect(bool AesSwitch, bool force)
{
#if defined(__x86_64__) || defined(__i386__)
int info[4];
__cpuid(0, info[0], info[1], info[2], info[3]);
if (info[0] >= 0x00000001) {
__cpuid(0x00000001, info[0], info[1], info[2], info[3]);
__builtin_cpu_init ();
#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
if (AesSwitch && force) { // only if forced
#else
if ((info[2] & bit_AES && AesSwitch) || (AesSwitch && force)) {
if ((__builtin_cpu_supports ("aes") && AesSwitch) || (AesSwitch && force)) {
#endif
aesni = true;
}
#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
if (AvxSwitch && force) { // only if forced
#else
if ((info[2] & bit_AVX && AvxSwitch) || (AvxSwitch && force)) {
#endif
avx = true;
}
}
#endif // defined(__x86_64__) || defined(__i386__)
LogPrint(eLogInfo, "AESNI ", (aesni ? "enabled" : "disabled"));
LogPrint(eLogInfo, "AVX ", (avx ? "enabled" : "disabled"));
}
}
}

5
libi2pd/CPU.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020, The PurpleI2P Project
* Copyright (c) 2013-2023, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -14,9 +14,8 @@ namespace i2p
namespace cpu
{
extern bool aesni;
extern bool avx;
void Detect(bool AesSwitch, bool AvxSwitch, bool force);
void Detect(bool AesSwitch, bool force);
}
}

2
libi2pd/Config.cpp
View file

@ -308,7 +308,7 @@ namespace config {
options_description cpuext("CPU encryption extensions options");
cpuext.add_options()
("cpuext.aesni", bool_switch()->default_value(true), "Use auto detection for AESNI CPU extensions. If false, AESNI will be not used")
("cpuext.avx", bool_switch()->default_value(true), "Use auto detection for AVX CPU extensions. If false, AVX will be not used")
("cpuext.avx", bool_switch()->default_value(false), "Deprecated option")
("cpuext.force", bool_switch()->default_value(false), "Force usage of CPU extensions. Useful when cpuinfo is not available on virtual machines")
;

4
libi2pd/Crypto.cpp
View file

@ -1285,9 +1285,9 @@ namespace crypto
}
}*/
void InitCrypto (bool precomputation, bool aesni, bool avx, bool force)
void InitCrypto (bool precomputation, bool aesni, bool force)
{
i2p::cpu::Detect (aesni, avx, force);
i2p::cpu::Detect (aesni, force);
#if LEGACY_OPENSSL
SSL_library_init ();
#endif

2
libi2pd/Crypto.h
View file

@ -307,7 +307,7 @@ namespace crypto
void InitNoiseIKState (NoiseSymmetricState& state, const uint8_t * pub); // Noise_IK (ratchets)
// init and terminate
void InitCrypto (bool precomputation, bool aesni, bool avx, bool force);
void InitCrypto (bool precomputation, bool aesni, bool force);
void TerminateCrypto ();
}
}

19
libi2pd/Identity.cpp
View file

@ -803,29 +803,12 @@ namespace data
XORMetric operator^(const IdentHash& key1, const IdentHash& key2)
{
XORMetric m;
#if (defined(__x86_64__) || defined(__i386__)) && defined(__AVX__) // not all X86 targets supports AVX (like old Pentium, see #1600)
if(i2p::cpu::avx)
{
__asm__
(
"vmovups %1, %%ymm0 \n"
"vmovups %2, %%ymm1 \n"
"vxorps %%ymm0, %%ymm1, %%ymm1 \n"
"vmovups %%ymm1, %0 \n"
: "=m"(*m.metric)
: "m"(*key1), "m"(*key2)
: "memory", "%xmm0", "%xmm1" // should be replaced by %ymm0/1 once supported by compiler
);
}
else
#endif
{
const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL ();
m.metric_ll[0] = hash1[0] ^ hash2[0];
m.metric_ll[1] = hash1[1] ^ hash2[1];
m.metric_ll[2] = hash1[2] ^ hash2[2];
m.metric_ll[3] = hash1[3] ^ hash2[3];
}
return m;
}

3
libi2pd/api.cpp
View file

@ -38,9 +38,8 @@ namespace api
bool precomputation; i2p::config::GetOption("precomputation.elgamal", precomputation);
bool aesni; i2p::config::GetOption("cpuext.aesni", aesni);
bool avx; i2p::config::GetOption("cpuext.avx", avx);
bool forceCpuExt; i2p::config::GetOption("cpuext.force", forceCpuExt);
i2p::crypto::InitCrypto (precomputation, aesni, avx, forceCpuExt);
i2p::crypto::InitCrypto (precomputation, aesni, forceCpuExt);
int netID; i2p::config::GetOption("netid", netID);
i2p::context.SetNetID (netID);