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/* This file is part of the dynarmic project.
* Copyright (c) 2023 MerryMage
* SPDX-License-Identifier: 0BSD
*/
#include <array>
#include <exception>
#include <map>
#include <catch2/catch_test_macros.hpp>
#include <mcl/stdint.hpp>
#include <oaknut/oaknut.hpp>
#include "dynarmic/interface/A64/a64.h"
using namespace Dynarmic;
namespace {
class MyEnvironment final : public A64::UserCallbacks {
public:
u64 ticks_left = 0;
std::map<u64, u8> memory{};
u8 MemoryRead8(u64 vaddr) override {
return memory[vaddr];
}
u16 MemoryRead16(u64 vaddr) override {
return u16(MemoryRead8(vaddr)) | u16(MemoryRead8(vaddr + 1)) << 8;
}
u32 MemoryRead32(u64 vaddr) override {
return u32(MemoryRead16(vaddr)) | u32(MemoryRead16(vaddr + 2)) << 16;
}
u64 MemoryRead64(u64 vaddr) override {
return u64(MemoryRead32(vaddr)) | u64(MemoryRead32(vaddr + 4)) << 32;
}
std::array<u64, 2> MemoryRead128(u64 vaddr) override {
return {MemoryRead64(vaddr), MemoryRead64(vaddr + 8)};
}
void MemoryWrite8(u64 vaddr, u8 value) override {
memory[vaddr] = value;
}
void MemoryWrite16(u64 vaddr, u16 value) override {
MemoryWrite8(vaddr, u8(value));
MemoryWrite8(vaddr + 1, u8(value >> 8));
}
void MemoryWrite32(u64 vaddr, u32 value) override {
MemoryWrite16(vaddr, u16(value));
MemoryWrite16(vaddr + 2, u16(value >> 16));
}
void MemoryWrite64(u64 vaddr, u64 value) override {
MemoryWrite32(vaddr, u32(value));
MemoryWrite32(vaddr + 4, u32(value >> 32));
}
void MemoryWrite128(u64 vaddr, std::array<u64, 2> value) override {
MemoryWrite64(vaddr, value[0]);
MemoryWrite64(vaddr + 8, value[1]);
}
void InterpreterFallback(u64, size_t) override {
// This is never called in practice.
std::terminate();
}
void CallSVC(u32) override {
// Do something.
}
void ExceptionRaised(u64, A64::Exception) override {
cpu->HaltExecution();
}
void AddTicks(u64) override {
}
u64 GetTicksRemaining() override {
return 1000000000000;
}
std::uint64_t GetCNTPCT() override {
return 0;
}
A64::Jit* cpu;
};
} // namespace
TEST_CASE("A64: fibonacci", "[a64]") {
MyEnvironment env;
A64::UserConfig user_config;
user_config.callbacks = &env;
A64::Jit cpu{user_config};
env.cpu = &cpu;
std::vector<u32> instructions(1024);
oaknut::CodeGenerator code{instructions.data(), nullptr};
using namespace oaknut::util;
oaknut::Label start, end, zero, recurse;
code.l(start);
code.STP(X29, X30, SP, PRE_INDEXED, -32);
code.STP(X20, X19, SP, 16);
code.MOV(X29, SP);
code.MOV(W19, W0);
code.SUBS(W0, W0, 1);
code.B(LT, zero);
code.B(NE, recurse);
code.MOV(W0, 1);
code.B(end);
code.l(zero);
code.MOV(W0, WZR);
code.B(end);
code.l(recurse);
code.BL(start);
code.MOV(W20, W0);
code.SUB(W0, W19, 2);
code.BL(start);
code.ADD(W0, W0, W20);
code.l(end);
code.LDP(X20, X19, SP, 16);
code.LDP(X29, X30, SP, POST_INDEXED, 32);
code.RET();
for (size_t i = 0; i < 1024; i++) {
env.MemoryWrite32(i * 4, instructions[i]);
}
env.MemoryWrite32(8888, 0xd4200000);
cpu.SetRegister(30, 8888);
cpu.SetRegister(0, 10);
cpu.SetSP(0xffff0000);
cpu.SetPC(0);
cpu.Run();
REQUIRE(cpu.GetRegister(0) == 55);
cpu.SetRegister(0, 20);
cpu.SetSP(0xffff0000);
cpu.SetPC(0);
cpu.Run();
REQUIRE(cpu.GetRegister(0) == 6765);
cpu.SetRegister(0, 30);
cpu.SetSP(0xffff0000);
cpu.SetPC(0);
cpu.Run();
REQUIRE(cpu.GetRegister(0) == 832040);
}
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