dynarmic/tests/arm/test_thumb_instructions.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 <catch.hpp>
#include "common/common_types.h"
#include "interface/interface.h"
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#include "skyeye_interpreter/dyncom/arm_dyncom_interpreter.h"
#include "skyeye_interpreter/skyeye_common/armstate.h"
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static std::array<u16, 1024> code_mem{};
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static u32 MemoryRead32(u32 vaddr);
static void InterpreterFallback(u32 pc, Dynarmic::Jit* jit);
static Dynarmic::UserCallbacks GetUserCallbacks();
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static u32 MemoryRead32(u32 vaddr) {
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if (vaddr < code_mem.size() * sizeof(u16)) {
size_t index = vaddr / sizeof(u16);
return code_mem[index] | (code_mem[index+1] << 16);
}
return vaddr;
}
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static void InterpreterFallback(u32 pc, Dynarmic::Jit* jit) {
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ARMul_State interp_state{USER32MODE};
interp_state.user_callbacks = GetUserCallbacks();
interp_state.NumInstrsToExecute = 1;
interp_state.Reg = jit->Regs();
interp_state.Cpsr = jit->Cpsr();
interp_state.Reg[15] = pc;
InterpreterClearCache();
InterpreterMainLoop(&interp_state);
jit->Regs() = interp_state.Reg;
jit->Cpsr() = interp_state.Cpsr;
}
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static Dynarmic::UserCallbacks GetUserCallbacks() {
Dynarmic::UserCallbacks user_callbacks{};
user_callbacks.MemoryRead32 = &MemoryRead32;
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user_callbacks.InterpreterFallback = &InterpreterFallback;
return user_callbacks;
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}
TEST_CASE( "thumb: lsls r0, r1, #2", "[thumb]" ) {
Dynarmic::Jit jit{GetUserCallbacks()};
code_mem.fill({});
code_mem[0] = 0x0088; // lsls r0, r1, #2
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code_mem[1] = 0xE7FE; // b +#0
jit.Regs()[0] = 1;
jit.Regs()[1] = 2;
jit.Regs()[15] = 0; // PC = 0
jit.Cpsr() = 0x00000030; // Thumb, User-mode
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jit.Run(1);
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REQUIRE( jit.Regs()[0] == 8 );
REQUIRE( jit.Regs()[1] == 2 );
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REQUIRE( jit.Regs()[15] == 2 );
REQUIRE( jit.Cpsr() == 0x00000030 );
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}
TEST_CASE( "thumb: lsls r0, r1, #31", "[thumb]" ) {
Dynarmic::Jit jit{GetUserCallbacks()};
code_mem.fill({});
code_mem[0] = 0x07C8; // lsls r0, r1, #31
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code_mem[1] = 0xE7FE; // b +#0
jit.Regs()[0] = 1;
jit.Regs()[1] = 0xFFFFFFFF;
jit.Regs()[15] = 0; // PC = 0
jit.Cpsr() = 0x00000030; // Thumb, User-mode
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jit.Run(1);
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REQUIRE( jit.Regs()[0] == 0x80000000 );
REQUIRE( jit.Regs()[1] == 0xffffffff );
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REQUIRE( jit.Regs()[15] == 2 );
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REQUIRE( jit.Cpsr() == 0xA0000030 ); // N, C flags, Thumb, User-mode
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}