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CPU/Recompiler: Implement LUT-based fastmem

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This commit is contained in:
Connor McLaughlin
2020-11-23 01:06:25 +10:00
parent 44b3c9be6e
commit bf2e38aed5
26 changed files with 1177 additions and 454 deletions
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23
src/common/page_fault_handler.cpp
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@ -31,7 +31,17 @@ static std::vector<RegisteredHandler> m_handlers;
static std::mutex m_handler_lock;
static thread_local bool s_in_handler;
#ifdef __aarch64__
#if defined(CPU_AARCH32)
static bool IsStoreInstruction(const void* ptr)
{
u32 bits;
std::memcpy(&bits, ptr, sizeof(bits));
// TODO
return false;
}
#elif defined(CPU_AARCH64)
static bool IsStoreInstruction(const void* ptr)
{
u32 bits;
@ -118,10 +128,13 @@ static void SIGSEGVHandler(int sig, siginfo_t* info, void* ctx)
#ifndef __APPLE__
void* const exception_address = reinterpret_cast<void*>(info->si_addr);
#if defined(__x86_64__)
#if defined(CPU_X64)
void* const exception_pc = reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext.gregs[REG_RIP]);
const bool is_write = (static_cast<ucontext_t*>(ctx)->uc_mcontext.gregs[REG_ERR] & 2) != 0;
#elif defined(__aarch64__)
#elif defined(CPU_AARCH32)
void* const exception_pc = reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext.arm_pc);
const bool is_write = IsStoreInstruction(exception_pc);
#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);
#else
@ -129,12 +142,12 @@ static void SIGSEGVHandler(int sig, siginfo_t* info, void* ctx)
const bool is_write = false;
#endif
#else // __APPLE__
#if defined(__x86_64__)
#if defined(CPU_X64)
void* const exception_address =
reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext->__es.__faultvaddr);
void* const exception_pc = reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext->__ss.__rip);
const bool is_write = (static_cast<ucontext_t*>(ctx)->uc_mcontext->__es.__err & 2) != 0;
#elif defined(__aarch64__)
#elif defined(CPU_AARCH64)
void* const exception_address = reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext->__es.__far);
void* const exception_pc = reinterpret_cast<void*>(static_cast<ucontext_t*>(ctx)->uc_mcontext->__ss.__pc);
const bool is_write = IsStoreInstruction(exception_pc);