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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cinttypes>
#include <memory>
#include <dynarmic/A64/a64.h>
#include <dynarmic/A64/config.h>
#include "common/logging/log.h"
#include "core/arm/dynarmic/arm_dynarmic.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/svc.h"
#include "core/memory.h"
using Vector = Dynarmic::A64::Vector;
class ARM_Dynarmic_Callbacks : public Dynarmic::A64::UserCallbacks {
public:
explicit ARM_Dynarmic_Callbacks(ARM_Dynarmic& parent) : parent(parent) {}
~ARM_Dynarmic_Callbacks() = default;
u8 MemoryRead8(u64 vaddr) override {
return Memory::Read8(vaddr);
}
u16 MemoryRead16(u64 vaddr) override {
return Memory::Read16(vaddr);
}
u32 MemoryRead32(u64 vaddr) override {
return Memory::Read32(vaddr);
}
u64 MemoryRead64(u64 vaddr) override {
return Memory::Read64(vaddr);
}
Vector MemoryRead128(u64 vaddr) override {
return {Memory::Read64(vaddr), Memory::Read64(vaddr + 8)};
}
void MemoryWrite8(u64 vaddr, u8 value) override {
Memory::Write8(vaddr, value);
}
void MemoryWrite16(u64 vaddr, u16 value) override {
Memory::Write16(vaddr, value);
}
void MemoryWrite32(u64 vaddr, u32 value) override {
Memory::Write32(vaddr, value);
}
void MemoryWrite64(u64 vaddr, u64 value) override {
Memory::Write64(vaddr, value);
}
void MemoryWrite128(u64 vaddr, Vector value) override {
Memory::Write64(vaddr, value[0]);
Memory::Write64(vaddr + 8, value[1]);
}
void InterpreterFallback(u64 pc, size_t num_instructions) override {
LOG_INFO(Core_ARM, "Unicorn fallback @ 0x{:X} for {} instructions (instr = {:08X})", pc,
num_instructions, MemoryReadCode(pc));
ARM_Interface::ThreadContext ctx;
parent.SaveContext(ctx);
parent.inner_unicorn.LoadContext(ctx);
parent.inner_unicorn.ExecuteInstructions(static_cast<int>(num_instructions));
parent.inner_unicorn.SaveContext(ctx);
parent.LoadContext(ctx);
num_interpreted_instructions += num_instructions;
}
void ExceptionRaised(u64 pc, Dynarmic::A64::Exception exception) override {
switch (exception) {
case Dynarmic::A64::Exception::WaitForInterrupt:
case Dynarmic::A64::Exception::WaitForEvent:
case Dynarmic::A64::Exception::SendEvent:
case Dynarmic::A64::Exception::SendEventLocal:
case Dynarmic::A64::Exception::Yield:
return;
default:
ASSERT_MSG(false, "ExceptionRaised(exception = {}, pc = {:X})",
static_cast<size_t>(exception), pc);
}
}
void CallSVC(u32 swi) override {
Kernel::CallSVC(swi);
}
void AddTicks(u64 ticks) override {
CoreTiming::AddTicks(ticks - num_interpreted_instructions);
num_interpreted_instructions = 0;
}
u64 GetTicksRemaining() override {
return std::max(CoreTiming::GetDowncount(), 0);
}
u64 GetCNTPCT() override {
return CoreTiming::GetTicks();
}
ARM_Dynarmic& parent;
size_t num_interpreted_instructions = 0;
u64 tpidrro_el0 = 0;
u64 tpidr_el0 = 0;
};
std::unique_ptr<Dynarmic::A64::Jit> MakeJit(const std::unique_ptr<ARM_Dynarmic_Callbacks>& cb) {
const auto page_table = Core::CurrentProcess()->vm_manager.page_table.pointers.data();
Dynarmic::A64::UserConfig config;
config.callbacks = cb.get();
config.tpidrro_el0 = &cb->tpidrro_el0;
config.tpidr_el0 = &cb->tpidr_el0;
config.dczid_el0 = 4;
config.ctr_el0 = 0x8444c004;
config.page_table = reinterpret_cast<void**>(page_table);
config.page_table_address_space_bits = Memory::ADDRESS_SPACE_BITS;
config.silently_mirror_page_table = false;
return std::make_unique<Dynarmic::A64::Jit>(config);
}
void ARM_Dynarmic::Run() {
ASSERT(Memory::GetCurrentPageTable() == current_page_table);
jit->Run();
}
void ARM_Dynarmic::Step() {
cb->InterpreterFallback(jit->GetPC(), 1);
}
ARM_Dynarmic::ARM_Dynarmic()
: cb(std::make_unique<ARM_Dynarmic_Callbacks>(*this)), jit(MakeJit(cb)) {
ARM_Interface::ThreadContext ctx;
inner_unicorn.SaveContext(ctx);
LoadContext(ctx);
PageTableChanged();
}
ARM_Dynarmic::~ARM_Dynarmic() = default;
void ARM_Dynarmic::MapBackingMemory(u64 address, size_t size, u8* memory,
Kernel::VMAPermission perms) {
inner_unicorn.MapBackingMemory(address, size, memory, perms);
}
void ARM_Dynarmic::UnmapMemory(u64 address, size_t size) {
inner_unicorn.UnmapMemory(address, size);
}
void ARM_Dynarmic::SetPC(u64 pc) {
jit->SetPC(pc);
}
u64 ARM_Dynarmic::GetPC() const {
return jit->GetPC();
}
u64 ARM_Dynarmic::GetReg(int index) const {
return jit->GetRegister(index);
}
void ARM_Dynarmic::SetReg(int index, u64 value) {
jit->SetRegister(index, value);
}
u128 ARM_Dynarmic::GetExtReg(int index) const {
return jit->GetVector(index);
}
void ARM_Dynarmic::SetExtReg(int index, u128 value) {
jit->SetVector(index, value);
}
u32 ARM_Dynarmic::GetVFPReg(int /*index*/) const {
UNIMPLEMENTED();
return {};
}
void ARM_Dynarmic::SetVFPReg(int /*index*/, u32 /*value*/) {
UNIMPLEMENTED();
}
u32 ARM_Dynarmic::GetCPSR() const {
return jit->GetPstate();
}
void ARM_Dynarmic::SetCPSR(u32 cpsr) {
jit->SetPstate(cpsr);
}
u64 ARM_Dynarmic::GetTlsAddress() const {
return cb->tpidrro_el0;
}
void ARM_Dynarmic::SetTlsAddress(u64 address) {
cb->tpidrro_el0 = address;
}
void ARM_Dynarmic::SaveContext(ARM_Interface::ThreadContext& ctx) {
ctx.cpu_registers = jit->GetRegisters();
ctx.sp = jit->GetSP();
ctx.pc = jit->GetPC();
ctx.cpsr = jit->GetPstate();
ctx.fpu_registers = jit->GetVectors();
ctx.fpscr = jit->GetFpcr();
ctx.tls_address = cb->tpidrro_el0;
}
void ARM_Dynarmic::LoadContext(const ARM_Interface::ThreadContext& ctx) {
jit->SetRegisters(ctx.cpu_registers);
jit->SetSP(ctx.sp);
jit->SetPC(ctx.pc);
jit->SetPstate(static_cast<u32>(ctx.cpsr));
jit->SetVectors(ctx.fpu_registers);
jit->SetFpcr(static_cast<u32>(ctx.fpscr));
cb->tpidrro_el0 = ctx.tls_address;
}
void ARM_Dynarmic::PrepareReschedule() {
if (jit->IsExecuting()) {
jit->HaltExecution();
}
}
void ARM_Dynarmic::ClearInstructionCache() {
jit->ClearCache();
}
void ARM_Dynarmic::PageTableChanged() {
jit = MakeJit(cb);
current_page_table = Memory::GetCurrentPageTable();
}
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