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JIT optimizations and refactoring (#675)

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* CPU/Recompiler: Use rel32 call where possible for no-args

* JitCodeBuffer: Support using preallocated buffer

* CPU/Recompiler/AArch64: Use bl instead of blr for short branches

* CPU/CodeCache: Allocate recompiler buffer in program space

This means we don't need 64-bit moves for every call out of the
recompiler.

* GTE: Don't store as u16 and load as u32

* CPU/Recompiler: Add methods to emit global load/stores

* GTE: Convert class to namespace

* CPU/Recompiler: Call GTE functions directly

* Settings: Turn into a global variable

* GPU: Replace local pointers with global

* InterruptController: Turn into a global pointer

* System: Replace local pointers with global

* Timers: Turn into a global instance

* DMA: Turn into a global instance

* SPU: Turn into a global instance

* CDROM: Turn into a global instance

* MDEC: Turn into a global instance

* Pad: Turn into a global instance

* SIO: Turn into a global instance

* CDROM: Move audio FIFO to the heap

* CPU/Recompiler: Drop ASMFunctions

No longer needed since we have code in the same 4GB window.

* CPUCodeCache: Turn class into namespace

* Bus: Local pointer -> global pointers

* CPU: Turn class into namespace

* Bus: Turn into namespace

* GTE: Store registers in CPU state struct

Allows relative addressing on ARM.

* CPU/Recompiler: Align code storage to page size

* CPU/Recompiler: Fix relative branches on A64

* HostInterface: Local references to global

* System: Turn into a namespace, move events out

* Add guard pages

* Android: Fix build
This commit is contained in:
Connor McLaughlin
2020-07-31 17:09:18 +10:00
committed by GitHub
parent 1f9fc6ab74
commit b6f871d2b9
88 changed files with 4993 additions and 5045 deletions
Download Patch File Download Diff File Expand all files Collapse all files

129
src/common/jit_code_buffer.cpp
View File

@ -10,8 +10,29 @@
#include <sys/mman.h>
#endif
JitCodeBuffer::JitCodeBuffer(u32 size /* = 64 * 1024 * 1024 */, u32 far_code_size /* = 0 */)
JitCodeBuffer::JitCodeBuffer() = default;
JitCodeBuffer::JitCodeBuffer(u32 size, u32 far_code_size)
{
if (!Allocate(size, far_code_size))
Panic("Failed to allocate code space");
}
JitCodeBuffer::JitCodeBuffer(void* buffer, u32 size, u32 far_code_size, u32 guard_pages)
{
if (!Initialize(buffer, size, far_code_size))
Panic("Failed to initialize code space");
}
JitCodeBuffer::~JitCodeBuffer()
{
Destroy();
}
bool JitCodeBuffer::Allocate(u32 size /* = 64 * 1024 * 1024 */, u32 far_code_size /* = 0 */)
{
Destroy();
m_total_size = size + far_code_size;
#if defined(WIN32)
@ -22,6 +43,10 @@ JitCodeBuffer::JitCodeBuffer(u32 size /* = 64 * 1024 * 1024 */, u32 far_code_siz
#else
m_code_ptr = nullptr;
#endif
if (!m_code_ptr)
return false;
m_free_code_ptr = m_code_ptr;
m_code_size = size;
m_code_used = 0;
@ -31,17 +56,91 @@ JitCodeBuffer::JitCodeBuffer(u32 size /* = 64 * 1024 * 1024 */, u32 far_code_siz
m_far_code_size = far_code_size;
m_far_code_used = 0;
if (!m_code_ptr)
Panic("Failed to allocate code space.");
m_old_protection = 0;
m_owns_buffer = true;
return true;
}
JitCodeBuffer::~JitCodeBuffer()
bool JitCodeBuffer::Initialize(void* buffer, u32 size, u32 far_code_size /* = 0 */, u32 guard_size /* = 0 */)
{
Destroy();
if ((far_code_size > 0 && guard_size >= far_code_size) || (far_code_size + (guard_size * 2)) > size)
return false;
#if defined(WIN32)
VirtualFree(m_code_ptr, 0, MEM_RELEASE);
DWORD old_protect = 0;
if (!VirtualProtect(buffer, size, PAGE_EXECUTE_READWRITE, &old_protect))
return false;
if (guard_size > 0)
{
DWORD old_guard_protect = 0;
u8* guard_at_end = (static_cast<u8*>(buffer) + size) - guard_size;
if (!VirtualProtect(buffer, guard_size, PAGE_NOACCESS, &old_guard_protect) ||
!VirtualProtect(guard_at_end, guard_size, PAGE_NOACCESS, &old_guard_protect))
{
return false;
}
}
m_code_ptr = static_cast<u8*>(buffer);
m_old_protection = static_cast<u32>(old_protect);
#elif defined(__linux__) || defined(__ANDROID__) || defined(__APPLE__)
munmap(m_code_ptr, m_total_size);
if (mprotect(buffer, size, PROT_READ | PROT_WRITE | PROT_EXEC) != 0)
return false;
if (guard_size > 0)
{
u8* guard_at_end = (static_cast<u8*>(buffer) + size) - guard_size;
if (mprotect(buffer, guard_size, PROT_NONE) != 0 || mprotect(guard_at_end, guard_size, PROT_NONE) != 0)
return false;
}
// reasonable default?
m_code_ptr = static_cast<u8*>(buffer);
m_old_protection = PROT_READ | PROT_WRITE;
#else
m_code_ptr = nullptr;
#endif
if (!m_code_ptr)
return false;
m_total_size = size;
m_free_code_ptr = m_code_ptr + guard_size;
m_code_size = size - far_code_size - (guard_size * 2);
m_code_used = 0;
m_far_code_ptr = static_cast<u8*>(m_code_ptr) + m_code_size;
m_free_far_code_ptr = m_far_code_ptr;
m_far_code_size = far_code_size - guard_size;
m_far_code_used = 0;
m_guard_size = guard_size;
m_owns_buffer = false;
return true;
}
void JitCodeBuffer::Destroy()
{
if (m_owns_buffer)
{
#if defined(WIN32)
VirtualFree(m_code_ptr, 0, MEM_RELEASE);
#elif defined(__linux__) || defined(__ANDROID__) || defined(__APPLE__)
munmap(m_code_ptr, m_total_size);
#endif
}
else if (m_code_ptr)
{
#if defined(WIN32)
DWORD old_protect = 0;
VirtualProtect(m_code_ptr, m_total_size, m_old_protection, &old_protect);
#else
mprotect(m_code_ptr, m_total_size, m_old_protection);
#endif
}
}
void JitCodeBuffer::CommitCode(u32 length)
@ -76,18 +175,18 @@ void JitCodeBuffer::CommitFarCode(u32 length)
void JitCodeBuffer::Reset()
{
std::memset(m_code_ptr, 0, m_code_size);
FlushInstructionCache(m_code_ptr, m_code_size);
m_free_code_ptr = m_code_ptr + m_guard_size;
m_code_used = 0;
std::memset(m_free_code_ptr, 0, m_code_size);
FlushInstructionCache(m_free_code_ptr, m_code_size);
if (m_far_code_size > 0)
{
std::memset(m_far_code_ptr, 0, m_far_code_size);
FlushInstructionCache(m_far_code_ptr, m_far_code_size);
m_free_far_code_ptr = m_far_code_ptr;
m_far_code_used = 0;
std::memset(m_free_far_code_ptr, 0, m_far_code_size);
FlushInstructionCache(m_free_far_code_ptr, m_far_code_size);
}
m_free_code_ptr = m_code_ptr;
m_code_used = 0;
m_free_far_code_ptr = m_far_code_ptr;
m_far_code_used = 0;
}
void JitCodeBuffer::Align(u32 alignment, u8 padding_value)