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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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11
src/util/page_fault_handler.cpp
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@ -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;