dynarmic/src/backend_x64/interface_x64.cpp

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/* This file is part of the dynarmic project.
* Copyright (c) 2016 MerryMage
* This software may be used and distributed according to the terms of the GNU
* General Public License version 2 or any later version.
*/
#include <memory>
#include "backend_x64/emit_x64.h"
#include "backend_x64/jitstate.h"
#include "backend_x64/routines.h"
#include "common/assert.h"
#include "common/bit_util.h"
#include "common/common_types.h"
#include "common/scope_exit.h"
#include "frontend/arm_types.h"
#include "frontend/translate.h"
#include "interface/interface.h"
namespace Dynarmic {
using namespace BackendX64;
struct BlockOfCode : Gen::XCodeBlock {
BlockOfCode() {
AllocCodeSpace(128 * 1024 * 1024);
}
};
struct Jit::Impl {
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Impl(Jit* jit, UserCallbacks callbacks) : emitter(&block_of_code, &routines, callbacks, jit), callbacks(callbacks) {}
JitState jit_state{};
Routines routines{};
BlockOfCode block_of_code{};
EmitX64 emitter;
const UserCallbacks callbacks;
size_t Execute(size_t cycle_count) {
u32 pc = jit_state.Reg[15];
bool TFlag = Common::Bit<5>(jit_state.Cpsr);
bool EFlag = Common::Bit<9>(jit_state.Cpsr);
Arm::LocationDescriptor descriptor{pc, TFlag, EFlag};
CodePtr code_ptr = GetBasicBlock(descriptor);
return routines.RunCode(&jit_state, code_ptr, cycle_count);
}
private:
CodePtr GetBasicBlock(Arm::LocationDescriptor descriptor) {
CodePtr code_ptr = emitter.GetBasicBlock(descriptor);
if (code_ptr)
return code_ptr;
IR::Block ir_block = Arm::Translate(descriptor, callbacks.MemoryRead32);
return emitter.Emit(descriptor, ir_block);
}
};
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Jit::Jit(UserCallbacks callbacks) : callbacks(callbacks), impl(std::make_unique<Impl>(this, callbacks)) {}
Jit::~Jit() {}
size_t Jit::Run(size_t cycle_count) {
ASSERT(!is_executing);
is_executing = true;
SCOPE_EXIT({ this->is_executing = false; });
halt_requested = false;
size_t cycles_executed = 0;
while (cycles_executed < cycle_count && !halt_requested) {
cycles_executed += impl->Execute(cycle_count - cycles_executed);
}
return cycles_executed;
}
void Jit::ClearCache(bool poison_memory) {
ASSERT(!is_executing);
}
void Jit::HaltExecution() {
ASSERT(is_executing);
halt_requested = true;
// TODO: Uh do other stuff to JitState pls.
}
std::array<u32, 16>& Jit::Regs() {
return impl->jit_state.Reg;
}
std::array<u32, 16> Jit::Regs() const {
return impl->jit_state.Reg;
}
u32& Jit::Cpsr() {
return impl->jit_state.Cpsr;
}
u32 Jit::Cpsr() const {
return impl->jit_state.Cpsr;
}
} // namespace Dynarmic