Merge pull request #9423 from MerryMage/arm64-movi2r-test
UnitTests: Add MOVI2R test
This commit is contained in:
commit
3e4bf57c69
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@ -11,10 +11,42 @@
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namespace Common::Random
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{
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class CSPRNG final
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struct PRNG::Impl
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{
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Impl(void* seed, std::size_t size)
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{
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mbedtls_hmac_drbg_init(&m_context);
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const int ret = mbedtls_hmac_drbg_seed_buf(
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&m_context, mbedtls_md_info_from_type(MBEDTLS_MD_SHA256), static_cast<u8*>(seed), size);
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ASSERT(ret == 0);
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}
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~Impl() { mbedtls_hmac_drbg_free(&m_context); }
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void Generate(void* buffer, std::size_t size)
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{
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const int ret = mbedtls_hmac_drbg_random(&m_context, static_cast<u8*>(buffer), size);
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ASSERT(ret == 0);
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}
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mbedtls_hmac_drbg_context m_context;
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};
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PRNG::PRNG(void* seed, std::size_t size) : m_impl(std::make_unique<Impl>(seed, size))
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{
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}
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PRNG::~PRNG() = default;
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void PRNG::Generate(void* buffer, std::size_t size)
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{
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m_impl->Generate(buffer, size);
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}
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class EntropySeededPRNG final
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{
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public:
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CSPRNG()
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EntropySeededPRNG()
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{
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mbedtls_entropy_init(&m_entropy);
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mbedtls_hmac_drbg_init(&m_context);
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@ -23,7 +55,7 @@ public:
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ASSERT(ret == 0);
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}
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~CSPRNG()
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~EntropySeededPRNG()
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{
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mbedtls_hmac_drbg_free(&m_context);
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mbedtls_entropy_free(&m_entropy);
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@ -40,10 +72,10 @@ private:
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mbedtls_hmac_drbg_context m_context;
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};
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static thread_local CSPRNG s_csprng;
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static thread_local EntropySeededPRNG s_esprng;
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void Generate(void* buffer, std::size_t size)
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{
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s_csprng.Generate(buffer, size);
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s_esprng.Generate(buffer, size);
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}
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} // namespace Common::Random
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@ -5,12 +5,37 @@
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#pragma once
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#include <cstddef>
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#include <memory>
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#include <type_traits>
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#include "Common/CommonTypes.h"
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namespace Common::Random
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{
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/// Cryptographically secure pseudo-random number generator, with explicit seed.
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class PRNG final
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{
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public:
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explicit PRNG(u64 seed) : PRNG(&seed, sizeof(u64)) {}
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PRNG(void* seed, std::size_t size);
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~PRNG();
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void Generate(void* buffer, std::size_t size);
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template <typename T>
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T GenerateValue()
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{
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static_assert(std::is_arithmetic<T>(), "T must be an arithmetic type in GenerateValue.");
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T value;
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Generate(&value, sizeof(value));
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return value;
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}
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private:
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struct Impl;
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std::unique_ptr<Impl> m_impl;
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};
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/// Fill `buffer` with random bytes using a cryptographically secure pseudo-random number generator.
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void Generate(void* buffer, std::size_t size);
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@ -19,4 +19,8 @@ if(_M_X86)
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PowerPC/Jit64Common/ConvertDoubleToSingle.cpp
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PowerPC/Jit64Common/Frsqrte.cpp
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)
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elseif(_M_ARM_64)
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add_dolphin_test(PowerPCTest
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PowerPC/JitArm64/MovI2R.cpp
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)
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endif()
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@ -0,0 +1,97 @@
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// Copyright 2021 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <cstddef>
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#include <type_traits>
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#include "Common/Arm64Emitter.h"
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#include "Common/Assert.h"
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#include "Common/BitUtils.h"
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#include "Common/Random.h"
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#include <gtest/gtest.h>
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namespace
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{
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using namespace Arm64Gen;
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class TestMovI2R : public ARM64CodeBlock
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{
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public:
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TestMovI2R() { AllocCodeSpace(4096); }
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void Check32(u32 value)
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{
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ResetCodePtr();
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const u8* fn = GetCodePtr();
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MOVI2R(W0, value);
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RET();
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FlushIcacheSection(const_cast<u8*>(fn), const_cast<u8*>(GetCodePtr()));
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const u64 result = Common::BitCast<u64 (*)()>(fn)();
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EXPECT_EQ(value, result);
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}
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void Check64(u64 value)
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{
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ResetCodePtr();
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const u8* fn = GetCodePtr();
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MOVI2R(X0, value);
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RET();
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FlushIcacheSection(const_cast<u8*>(fn), const_cast<u8*>(GetCodePtr()));
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const u64 result = Common::BitCast<u64 (*)()>(fn)();
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EXPECT_EQ(value, result);
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}
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};
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} // namespace
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TEST(JitArm64, MovI2R_32BitValues)
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{
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Common::Random::PRNG rng{0};
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TestMovI2R test;
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for (u64 i = 0; i < 0x100000; i++)
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{
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const u32 value = rng.GenerateValue<u32>();
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test.Check32(value);
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test.Check64(value);
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}
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}
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TEST(JitArm64, MovI2R_Rand)
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{
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Common::Random::PRNG rng{0};
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TestMovI2R test;
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for (u64 i = 0; i < 0x100000; i++)
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{
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test.Check64(rng.GenerateValue<u64>());
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}
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}
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TEST(JitArm64, MovI2R_ADP)
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{
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TestMovI2R test;
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const u64 base = Common::BitCast<u64>(test.GetCodePtr());
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for (s64 i = -0x20000; i < 0x20000; i++)
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{
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const u64 offset = static_cast<u64>(i);
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test.Check64(base + offset);
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}
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}
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TEST(JitArm64, MovI2R_ADRP)
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{
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TestMovI2R test;
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const u64 base = Common::BitCast<u64>(test.GetCodePtr()) & ~0xFFF;
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for (s64 i = -0x20000; i < 0x20000; i++)
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{
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const u64 offset = static_cast<u64>(i) << 12;
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test.Check64(base + offset);
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}
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}
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