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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include <dynarmic/dynarmic.h>
#include "common/assert.h"
#include "common/microprofile.h"
#include "core/arm/dynarmic/arm_dynarmic.h"
#include "core/arm/dynarmic/arm_dynarmic_cp15.h"
#include "core/arm/dyncom/arm_dyncom_interpreter.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/svc.h"
#include "core/memory.h"
static void InterpreterFallback(u32 pc, Dynarmic::Jit* jit, void* user_arg) {
ARMul_State* state = static_cast<ARMul_State*>(user_arg);
state->Reg = jit->Regs();
state->Cpsr = jit->Cpsr();
state->Reg[15] = pc;
state->ExtReg = jit->ExtRegs();
state->VFP[VFP_FPSCR] = jit->Fpscr();
state->NumInstrsToExecute = 1;
InterpreterMainLoop(state);
bool is_thumb = (state->Cpsr & (1 << 5)) != 0;
state->Reg[15] &= (is_thumb ? 0xFFFFFFFE : 0xFFFFFFFC);
jit->Regs() = state->Reg;
jit->Cpsr() = state->Cpsr;
jit->ExtRegs() = state->ExtReg;
jit->SetFpscr(state->VFP[VFP_FPSCR]);
}
static bool IsReadOnlyMemory(u32 vaddr) {
// TODO(bunnei): ImplementMe
return false;
}
static Dynarmic::UserCallbacks GetUserCallbacks(
const std::shared_ptr<ARMul_State>& interpeter_state) {
Dynarmic::UserCallbacks user_callbacks{};
user_callbacks.InterpreterFallback = &InterpreterFallback;
user_callbacks.user_arg = static_cast<void*>(interpeter_state.get());
user_callbacks.CallSVC = &SVC::CallSVC;
user_callbacks.memory.IsReadOnlyMemory = &IsReadOnlyMemory;
user_callbacks.memory.ReadCode = &Memory::Read32;
user_callbacks.memory.Read8 = &Memory::Read8;
user_callbacks.memory.Read16 = &Memory::Read16;
user_callbacks.memory.Read32 = &Memory::Read32;
user_callbacks.memory.Read64 = &Memory::Read64;
user_callbacks.memory.Write8 = &Memory::Write8;
user_callbacks.memory.Write16 = &Memory::Write16;
user_callbacks.memory.Write32 = &Memory::Write32;
user_callbacks.memory.Write64 = &Memory::Write64;
// TODO(Subv): Re-add the page table pointers once dynarmic supports switching page tables at
// runtime.
user_callbacks.page_table = nullptr;
user_callbacks.coprocessors[15] = std::make_shared<DynarmicCP15>(interpeter_state);
return user_callbacks;
}
ARM_Dynarmic::ARM_Dynarmic(PrivilegeMode initial_mode) {
interpreter_state = std::make_shared<ARMul_State>(initial_mode);
jit = std::make_unique<Dynarmic::Jit>(GetUserCallbacks(interpreter_state));
}
void ARM_Dynarmic::SetPC(u32 pc) {
jit->Regs()[15] = pc;
}
u32 ARM_Dynarmic::GetPC() const {
return jit->Regs()[15];
}
u32 ARM_Dynarmic::GetReg(int index) const {
return jit->Regs()[index];
}
void ARM_Dynarmic::SetReg(int index, u32 value) {
jit->Regs()[index] = value;
}
u32 ARM_Dynarmic::GetVFPReg(int index) const {
return jit->ExtRegs()[index];
}
void ARM_Dynarmic::SetVFPReg(int index, u32 value) {
jit->ExtRegs()[index] = value;
}
u32 ARM_Dynarmic::GetVFPSystemReg(VFPSystemRegister reg) const {
if (reg == VFP_FPSCR) {
return jit->Fpscr();
}
// Dynarmic does not implement and/or expose other VFP registers, fallback to interpreter state
return interpreter_state->VFP[reg];
}
void ARM_Dynarmic::SetVFPSystemReg(VFPSystemRegister reg, u32 value) {
if (reg == VFP_FPSCR) {
jit->SetFpscr(value);
}
// Dynarmic does not implement and/or expose other VFP registers, fallback to interpreter state
interpreter_state->VFP[reg] = value;
}
u32 ARM_Dynarmic::GetCPSR() const {
return jit->Cpsr();
}
void ARM_Dynarmic::SetCPSR(u32 cpsr) {
jit->Cpsr() = cpsr;
}
u32 ARM_Dynarmic::GetCP15Register(CP15Register reg) {
return interpreter_state->CP15[reg];
}
void ARM_Dynarmic::SetCP15Register(CP15Register reg, u32 value) {
interpreter_state->CP15[reg] = value;
}
void ARM_Dynarmic::AddTicks(u64 ticks) {
down_count -= ticks;
if (down_count < 0) {
CoreTiming::Advance();
}
}
MICROPROFILE_DEFINE(ARM_Jit, "ARM JIT", "ARM JIT", MP_RGB(255, 64, 64));
void ARM_Dynarmic::ExecuteInstructions(int num_instructions) {
MICROPROFILE_SCOPE(ARM_Jit);
std::size_t ticks_executed = jit->Run(static_cast<unsigned>(num_instructions));
AddTicks(ticks_executed);
}
void ARM_Dynarmic::SaveContext(ARM_Interface::ThreadContext& ctx) {
memcpy(ctx.cpu_registers, jit->Regs().data(), sizeof(ctx.cpu_registers));
memcpy(ctx.fpu_registers, jit->ExtRegs().data(), sizeof(ctx.fpu_registers));
ctx.sp = jit->Regs()[13];
ctx.lr = jit->Regs()[14];
ctx.pc = jit->Regs()[15];
ctx.cpsr = jit->Cpsr();
ctx.fpscr = jit->Fpscr();
ctx.fpexc = interpreter_state->VFP[VFP_FPEXC];
}
void ARM_Dynarmic::LoadContext(const ARM_Interface::ThreadContext& ctx) {
memcpy(jit->Regs().data(), ctx.cpu_registers, sizeof(ctx.cpu_registers));
memcpy(jit->ExtRegs().data(), ctx.fpu_registers, sizeof(ctx.fpu_registers));
jit->Regs()[13] = ctx.sp;
jit->Regs()[14] = ctx.lr;
jit->Regs()[15] = ctx.pc;
jit->Cpsr() = ctx.cpsr;
jit->SetFpscr(ctx.fpscr);
interpreter_state->VFP[VFP_FPEXC] = ctx.fpexc;
}
void ARM_Dynarmic::PrepareReschedule() {
if (jit->IsExecuting()) {
jit->HaltExecution();
}
}
void ARM_Dynarmic::ClearInstructionCache() {
jit->ClearCache();
}
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