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Add sha256_arm_shani to build system

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Also rename AArch64 intrinsics to ARMv8 intrinsics
as these are not necessarily limited to 64-bit
This commit is contained in:
Pavol Rusnak
2022-01-20 18:57:27 +01:00
parent c2b7934250
commit 48a72fa81f
4 changed files with 100 additions and 1 deletions
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46
src/crypto/sha256.cpp
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@@ -10,6 +10,16 @@
#include <compat/cpuid.h>
#if defined(__linux__) && defined(ENABLE_ARM_SHANI) && !defined(BUILD_BITCOIN_INTERNAL)
#include <sys/auxv.h>
#include <asm/hwcap.h>
#endif
#if defined(MAC_OSX) && defined(ENABLE_ARM_SHANI) && !defined(BUILD_BITCOIN_INTERNAL)
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
#if defined(__x86_64__) || defined(__amd64__) || defined(__i386__)
#if defined(USE_ASM)
namespace sha256_sse4
@@ -39,6 +49,11 @@ namespace sha256_x86_shani
void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks);
}
namespace sha256_arm_shani
{
void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks);
}
// Internal implementation code.
namespace
{
@@ -623,6 +638,37 @@ std::string SHA256AutoDetect()
#endif
#endif
#if defined(ENABLE_ARM_SHANI) && !defined(BUILD_BITCOIN_INTERNAL)
bool have_arm_shani = false;
#if defined(__linux__)
#if defined(__arm__) // 32-bit
if (getauxval(AT_HWCAP2) & HWCAP2_SHA2) {
have_arm_shani = true;
}
#endif
#if defined(__aarch64__) // 64-bit
if (getauxval(AT_HWCAP) & HWCAP_SHA2) {
have_arm_shani = true;
}
#endif
#endif
#if defined(MAC_OSX)
int val = 0;
size_t len = sizeof(val);
if (sysctlbyname("hw.optional.arm.FEAT_SHA256", &val, &len, nullptr, 0) == 0) {
have_arm_shani = val != 0;
}
#endif
if (have_arm_shani) {
Transform = sha256_arm_shani::Transform;
TransformD64 = TransformD64Wrapper<sha256_arm_shani::Transform>;
ret = "arm_shani(1way)";
}
#endif
assert(SelfTest());
return ret;
}

22
src/crypto/sha256_arm_shani.cpp Normal file
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@@ -0,0 +1,22 @@
// Copyright (c) 2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
//
// Based on https://github.com/noloader/SHA-Intrinsics/blob/master/sha256-arm.c,
// Written and placed in public domain by Jeffrey Walton.
// Based on code from ARM, and by Johannes Schneiders, Skip Hovsmith and
// Barry O'Rourke for the mbedTLS project.
#ifdef ENABLE_ARM_SHANI
#include <cstdint>
#include <cstddef>
namespace sha256_arm_shani {
void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks)
{
}
}
#endif