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System: Refactor main loop

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Reduces JIT exits.
Improves runahead performance.
This commit is contained in:
Stenzek
2023-08-15 23:12:21 +10:00
parent 4ebd34fcb3
commit 5b980dafa5
43 changed files with 1343 additions and 923 deletions
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4
src/util/jit_code_buffer.cpp
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@ -209,7 +209,7 @@ void JitCodeBuffer::CommitCode(u32 length)
if (length == 0)
return;
#if defined(CPU_AARCH32) || defined(CPU_AARCH64)
#if defined(CPU_AARCH32) || defined(CPU_AARCH64) || defined(CPU_RISCV64)
// ARM instruction and data caches are not coherent, we need to flush after every block.
FlushInstructionCache(m_free_code_ptr, length);
#endif
@ -224,7 +224,7 @@ void JitCodeBuffer::CommitFarCode(u32 length)
if (length == 0)
return;
#if defined(CPU_AARCH32) || defined(CPU_AARCH64)
#if defined(CPU_AARCH32) || defined(CPU_AARCH64) || defined(CPU_RISCV64)
// ARM instruction and data caches are not coherent, we need to flush after every block.
FlushInstructionCache(m_free_far_code_ptr, length);
#endif

9
src/util/jit_code_buffer.h
View File

@ -21,6 +21,15 @@ public:
ALWAYS_INLINE u8* GetCodePointer() const { return m_code_ptr; }
ALWAYS_INLINE u32 GetTotalSize() const { return m_total_size; }
ALWAYS_INLINE float GetUsedPct() const
{
return (static_cast<float>(m_code_used) / static_cast<float>(m_code_size)) * 100.0f;
}
ALWAYS_INLINE float GetFarUsedPct() const
{
return (static_cast<float>(m_far_code_used) / static_cast<float>(m_far_code_size)) * 100.0f;
}
ALWAYS_INLINE u32 GetTotalUsed() const { return m_code_used + m_far_code_used; }
ALWAYS_INLINE u8* GetFreeCodePointer() const { return m_free_code_ptr; }
ALWAYS_INLINE u32 GetFreeCodeSpace() const { return static_cast<u32>(m_code_size - m_code_used); }

11
src/util/page_fault_handler.cpp
View File

@ -81,6 +81,14 @@ static bool IsStoreInstruction(const void* ptr)
return false;
}
}
#elif defined(CPU_RISCV64)
static bool IsStoreInstruction(const void* ptr)
{
u32 bits;
std::memcpy(&bits, ptr, sizeof(bits));
return ((bits & 0x7Fu) == 0b0100011u);
}
#endif
#if defined(_WIN32) && (defined(CPU_X64) || defined(CPU_AARCH64))
@ -143,6 +151,9 @@ static void SIGSEGVHandler(int sig, siginfo_t* info, void* ctx)
#elif defined(CPU_AARCH64)
void* const exception_pc = reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext.pc);
const bool is_write = IsStoreInstruction(exception_pc);
#elif defined(CPU_RISCV64)
void* const exception_pc = reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext.__gregs[REG_PC]);
const bool is_write = IsStoreInstruction(exception_pc);
#else
void* const exception_pc = nullptr;
const bool is_write = false;