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https://github.com/citra-emu/citra.git
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JitX64: Correct ARM data processing instruction implementations
* Don't depend on dispatcher to align instructions that write to PC. * Rename GetReg15Value to PC. * Factor out ExpandArmImmediate and CompileExpandArmImmediate_C.
This commit is contained in:
MerryMage
parent
208795b885
commit
f921242b41
@ -291,6 +291,7 @@ static const std::array<ThumbInstruction, 27> thumb_instruction_table = { {
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Register Rn = Bit<11>(instruction) ? Register::SP : Register::PC;
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Register Rd = static_cast<Register>(Bits<8, 10>(instruction));
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u32 imm8 = Bits<0, 7>(instruction);
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// TODO: ADR implementation incorrect. Reimplement properly.
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v->ADD_imm(Cond::AL, /*S=*/false, Rn, Rd, 0xF, imm8);
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})},
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{ "adjust stack ptr", MakeMatcher("10110000oxxxxxxx", [](Visitor* v, u16 instruction) {
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@ -13,7 +13,7 @@ using namespace Gen;
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void JitX64::B(Cond cond, ArmImm24 imm24) {
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cond_manager.CompileCond(cond);
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const u32 new_pc = GetReg15Value() + BitUtil::SignExtend<26>(imm24 << 2);
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const u32 new_pc = PC() + BitUtil::SignExtend<26>(imm24 << 2);
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reg_alloc.FlushEverything();
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current.arm_pc += GetInstSize();
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@ -28,7 +28,7 @@ void JitX64::B(Cond cond, ArmImm24 imm24) {
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void JitX64::BL(Cond cond, ArmImm24 imm24) {
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cond_manager.CompileCond(cond);
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const u32 new_pc = GetReg15Value() + BitUtil::SignExtend<26>(imm24 << 2);
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const u32 new_pc = PC() + BitUtil::SignExtend<26>(imm24 << 2);
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ASSERT(!current.TFlag);
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const u32 link_pc = current.arm_pc + GetInstSize();
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@ -49,7 +49,7 @@ void JitX64::BL(Cond cond, ArmImm24 imm24) {
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void JitX64::BLX_imm(bool H, ArmImm24 imm24) {
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cond_manager.Always();
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const u32 new_pc = GetReg15Value() + BitUtil::SignExtend<26>(imm24 << 2) + (H ? 2 : 0);
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const u32 new_pc = PC() + BitUtil::SignExtend<26>(imm24 << 2) + (H ? 2 : 0);
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ASSERT(!current.TFlag);
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const u32 link_pc = current.arm_pc + GetInstSize();
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@ -95,7 +95,7 @@ void JitX64::BX(Cond cond, ArmReg Rm_index) {
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cond_manager.CompileCond(cond);
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if (Rm_index == ArmReg::PC) {
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code->MOV(32, MJitStateArmPC(), Imm32(GetReg15Value()));
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code->MOV(32, MJitStateArmPC(), Imm32(PC()));
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code->MOV(32, MJitStateTFlag(), Imm32(0));
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} else {
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Gen::X64Reg Rm = reg_alloc.BindArmForRead(Rm_index);
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File diff suppressed because it is too large
Load Diff
@ -23,9 +23,9 @@ void JitX64::LoadAndStoreWordOrUnsignedByte_Immediate_Helper(X64Reg dest, bool U
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if (Rn_index == ArmReg::PC) {
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u32 address;
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if (U) {
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address = GetReg15Value_WordAligned() + imm12;
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address = PC_WordAligned() + imm12;
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} else {
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address = GetReg15Value_WordAligned() - imm12;
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address = PC_WordAligned() - imm12;
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}
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code->MOV(32, R(dest), Imm32(address));
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} else {
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@ -141,7 +141,7 @@ void JitX64::LoadAndStoreWordOrUnsignedByte_ScaledRegisterOffset(X64Reg dest, bo
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code->MOV(32, R(dest), Rn);
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reg_alloc.UnlockArm(Rn_index);
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} else {
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code->MOV(32, R(dest), Imm32(GetReg15Value_WordAligned()));
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code->MOV(32, R(dest), Imm32(PC_WordAligned()));
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}
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LoadAndStoreWordOrUnsignedByte_ScaledRegister_Helper(dest, U, Rn_index, imm5, shift, Rm_index);
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@ -343,7 +343,7 @@ void JitX64::STR_imm(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM2);
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reg_alloc.LockX64(ABI_PARAM2);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index);
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CompileCallHost(reinterpret_cast<const void*>(!current.EFlag ? &Store32LE : &Store32BE));
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@ -369,7 +369,7 @@ void JitX64::STR_reg(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM2);
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reg_alloc.LockX64(ABI_PARAM2);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index);
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CompileCallHost(reinterpret_cast<const void*>(!current.EFlag ? &Store32LE : &Store32BE));
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@ -395,7 +395,7 @@ void JitX64::STRB_imm(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM2);
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reg_alloc.LockX64(ABI_PARAM2);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index);
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CompileCallHost(reinterpret_cast<const void*>(&Store8));
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@ -421,7 +421,7 @@ void JitX64::STRB_reg(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM2);
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reg_alloc.LockX64(ABI_PARAM2);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index);
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CompileCallHost(reinterpret_cast<const void*>(&Store8));
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@ -706,8 +706,8 @@ void JitX64::STRD_imm(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM3);
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reg_alloc.LockX64(ABI_PARAM3);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index + 0);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM3, Rd_index + 1);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index + 0);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM3, Rd_index + 1);
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CompileCallHost(reinterpret_cast<const void*>(!current.EFlag ? &Store64LE : &Store64BE));
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@ -737,8 +737,8 @@ void JitX64::STRD_reg(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM3);
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reg_alloc.LockX64(ABI_PARAM3);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index + 0);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM3, Rd_index + 1);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index + 0);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM3, Rd_index + 1);
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CompileCallHost(reinterpret_cast<const void*>(!current.EFlag ? &Store64LE : &Store64BE));
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@ -765,7 +765,7 @@ void JitX64::STRH_imm(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM2);
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reg_alloc.LockX64(ABI_PARAM2);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index);
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CompileCallHost(reinterpret_cast<const void*>(!current.EFlag ? &Store16LE : &Store16BE));
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@ -791,7 +791,7 @@ void JitX64::STRH_reg(Cond cond, bool P, bool U, bool W, ArmReg Rn_index, ArmReg
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reg_alloc.FlushX64(ABI_PARAM2);
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reg_alloc.LockX64(ABI_PARAM2);
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GetValueOfRegister(code, reg_alloc, GetReg15Value(), ABI_PARAM2, Rd_index);
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GetValueOfRegister(code, reg_alloc, PC(), ABI_PARAM2, Rd_index);
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CompileCallHost(reinterpret_cast<const void*>(!current.EFlag ? &Store16LE : &Store16BE));
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@ -16,7 +16,7 @@ void JitX64::thumb_B(Cond cond, ArmImm8 imm8) {
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ASSERT_MSG(current.TFlag, "thumb_B may only be called in thumb mode");
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const u32 new_pc = GetReg15Value() + BitUtil::SignExtend<9>(imm8 << 1);
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const u32 new_pc = PC() + BitUtil::SignExtend<9>(imm8 << 1);
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reg_alloc.FlushEverything();
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current.arm_pc += GetInstSize();
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@ -33,7 +33,7 @@ void JitX64::thumb_B(ArmImm11 imm11) {
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ASSERT_MSG(current.TFlag, "thumb_B may only be called in thumb mode");
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const u32 new_pc = GetReg15Value() + BitUtil::SignExtend<12>(imm11 << 1);
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const u32 new_pc = PC() + BitUtil::SignExtend<12>(imm11 << 1);
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reg_alloc.FlushEverything();
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current.arm_pc += GetInstSize();
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@ -159,24 +159,6 @@ void JitX64::CompileSingleThumbInstruction() {
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}
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}
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void JitX64::CompileCallHost(const void* const fn) {
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// There is no need to setup the stack as the stored RSP has already been properly aligned.
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reg_alloc.FlushABICallerSaved();
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ASSERT(reg_alloc.JitStateReg() != RSP);
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code->MOV(64, R(RSP), MJitStateHostReturnRSP());
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const uintptr_t distance = reinterpret_cast<uintptr_t>(fn) - (reinterpret_cast<uintptr_t>(code->GetCodePtr()) + 5);
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if (distance >= 0x0000000080000000ULL && distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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code->MOV(64, R(RAX), ImmPtr(fn));
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code->CALLptr(R(RAX));
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} else {
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code->CALL(fn);
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}
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}
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// Convenience functions:
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// We static_assert types because anything that calls these functions makes those assumptions.
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// If the types of the variables are changed please update all code that calls these functions.
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@ -262,4 +244,53 @@ Gen::OpArg JitX64::MJitStateExclusiveState() const {
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return Gen::MDisp(reg_alloc.JitStateReg(), offsetof(JitState, cpu_state) + offsetof(ARMul_State, exclusive_state));
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}
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// Common instruction subroutines
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void JitX64::CompileCallHost(const void* const fn) {
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// There is no need to setup the stack as the stored RSP has already been properly aligned.
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reg_alloc.FlushABICallerSaved();
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ASSERT(reg_alloc.JitStateReg() != RSP);
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code->MOV(64, R(RSP), MJitStateHostReturnRSP());
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const uintptr_t distance = reinterpret_cast<uintptr_t>(fn) - (reinterpret_cast<uintptr_t>(code->GetCodePtr()) + 5);
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if (distance >= 0x0000000080000000ULL && distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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code->MOV(64, R(RAX), ImmPtr(fn));
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code->CALLptr(R(RAX));
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} else {
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code->CALL(fn);
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}
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}
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u32 JitX64::PC() const {
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// When executing an ARM instruction, PC reads as the address of that instruction plus 8.
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// When executing an Thumb instruction, PC reads as the address of that instruction plus 4.
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return !current.TFlag ? current.arm_pc + 8 : current.arm_pc + 4;
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}
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u32 JitX64::PC_WordAligned() const {
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return PC() & 0xFFFFFFFC;
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}
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u32 JitX64::ExpandArmImmediate(int rotate, ArmImm8 imm8) {
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return CompileExpandArmImmediate_C(rotate, imm8, false);
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}
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u32 JitX64::CompileExpandArmImmediate_C(int rotate, ArmImm8 imm8, bool update_cflag) {
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u32 immediate = rotr(imm8, rotate * 2);
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if (rotate != 0 && update_cflag) {
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code->MOV(32, MJitStateCFlag(), Gen::Imm32(immediate & 0x80000000 ? 1 : 0));
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}
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return immediate;
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}
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void JitX64::CompileALUWritePC() {
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reg_alloc.FlushArm(ArmReg::PC);
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code->AND(32, MJitStateArmPC(), Gen::Imm32(!current.TFlag ? 0xFFFFFFFC : 0xFFFFFFFE));
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}
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}
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@ -95,13 +95,6 @@ private:
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Gen::OpArg MJitStateExclusiveTag() const;
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Gen::OpArg MJitStateExclusiveState() const;
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u32 GetReg15Value() const {
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return (current.arm_pc & ~0x1) + static_cast<u32>(GetInstSize() * 2);
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}
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u32 GetReg15Value_WordAligned() const {
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return (current.arm_pc & ~0x3) + static_cast<u32>(GetInstSize() * 2);
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}
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void UpdateFlagsNZCV() {
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cond_manager.FlagsDirty();
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code->SETcc(Gen::CC_S, MJitStateNFlag());
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@ -144,10 +137,24 @@ private:
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} cond_manager;
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private:
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// Interpreter
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void CompileInterpretInstruction();
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// Common instruction subroutines
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/// Assembles a CALL instruction to fn.
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void CompileCallHost(const void* const fn);
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/// dest must be a temporary that contains a copy of the value of Rm
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/// Value of R15.
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u32 PC() const;
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/// Value of Align(R15, 4).
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u32 PC_WordAligned() const;
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/// Compiles shifter operations for instructions that use the shifter. dest must be a temporary that contains a copy of the value of Rm
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void CompileShifter_imm(Gen::X64Reg dest, ArmImm5 imm5, ShiftType shift, bool do_shifter_carry_out);
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/// Returns the expanded immediate value for ARM instructions.
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u32 ExpandArmImmediate(int rotate, ArmImm8 imm8);
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/// Returns the expanded immediate value for ARM instructions. This function also sets MJitStateCFlag according to the carry output.
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u32 CompileExpandArmImmediate_C(int rotate, ArmImm8 imm8, bool update_cflag);
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/// Corrects the value written to MJitStateArmPC after an ALU operation that writes to the PC.
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void CompileALUWritePC();
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// Branch instructions
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void B(Cond cond, ArmImm24 imm24) override;
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@ -10,61 +10,71 @@
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#include "tests/core/arm/jit_x64/rand_int.h"
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#include "tests/core/arm/jit_x64/fuzz_arm_common.h"
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#include <common/assert.h>
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TEST_CASE("Fuzz ARM data processing instructions", "[JitX64]") {
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const std::array<std::pair<u32, u32>, 48> instructions = {{
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const std::array<std::pair<u32, u32>, 16> imm_instructions = {{
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FromBitString32("cccc0010101Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000101Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000101Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0010100Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000100Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000100Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0010000Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000000Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000000Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0011110Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0001110Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001110Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc00110111nnnn0000rrrrvvvvvvvv"),
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FromBitString32("cccc00010111nnnn0000vvvvvrr0mmmm"),
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FromBitString32("cccc00010111nnnn0000ssss0rr1mmmm"),
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FromBitString32("cccc00110101nnnn0000rrrrvvvvvvvv"),
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FromBitString32("cccc00010101nnnn0000vvvvvrr0mmmm"),
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FromBitString32("cccc00010101nnnn0000ssss0rr1mmmm"),
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FromBitString32("cccc0010001Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000001Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000001Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0011101S0000ddddrrrrvvvvvvvv"),
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FromBitString32("cccc0001101S0000ddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001101S0000ddddssss0rr1mmmm"),
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FromBitString32("cccc0011111S0000ddddrrrrvvvvvvvv"),
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FromBitString32("cccc0001111S0000ddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001111S0000ddddssss0rr1mmmm"),
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FromBitString32("cccc0011100Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0001100Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001100Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0010011Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000011Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000011Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0010111Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000111Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000111Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0010110Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000110Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000110Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc0010010Snnnnddddrrrrvvvvvvvv"),
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FromBitString32("cccc0000010Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000010Snnnnddddssss0rr1mmmm"),
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FromBitString32("cccc00110011nnnn0000rrrrvvvvvvvv"),
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FromBitString32("cccc00010011nnnn0000vvvvvrr0mmmm"),
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FromBitString32("cccc00010011nnnn0000ssss0rr1mmmm"),
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FromBitString32("cccc00110001nnnn0000rrrrvvvvvvvv"),
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}};
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const std::array<std::pair<u32, u32>, 16> reg_instructions = {{
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FromBitString32("cccc0000101Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000100Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000000Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001110Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc00010111nnnn0000vvvvvrr0mmmm"),
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FromBitString32("cccc00010101nnnn0000vvvvvrr0mmmm"),
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FromBitString32("cccc0000001Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001101S0000ddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001111S0000ddddvvvvvrr0mmmm"),
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FromBitString32("cccc0001100Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000011Snnnnddddvvvvvrr0mmmm"),
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FromBitString32("cccc0000111Snnnnddddvvvvvrr0mmmm"),
|
||||
FromBitString32("cccc0000110Snnnnddddvvvvvrr0mmmm"),
|
||||
FromBitString32("cccc0000010Snnnnddddvvvvvrr0mmmm"),
|
||||
FromBitString32("cccc00010011nnnn0000vvvvvrr0mmmm"),
|
||||
FromBitString32("cccc00010001nnnn0000vvvvvrr0mmmm"),
|
||||
}};
|
||||
|
||||
const std::array<std::pair<u32, u32>, 16> rsr_instructions = {{
|
||||
FromBitString32("cccc0000101Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0000100Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0000000Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0001110Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc00010111nnnn0000ssss0rr1mmmm"),
|
||||
FromBitString32("cccc00010101nnnn0000ssss0rr1mmmm"),
|
||||
FromBitString32("cccc0000001Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0001101S0000ddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0001111S0000ddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0001100Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0000011Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0000111Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0000110Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc0000010Snnnnddddssss0rr1mmmm"),
|
||||
FromBitString32("cccc00010011nnnn0000ssss0rr1mmmm"),
|
||||
FromBitString32("cccc00010001nnnn0000ssss0rr1mmmm"),
|
||||
}};
|
||||
|
||||
auto instruction_select_without_R15 = [&]() -> u32 {
|
||||
size_t inst_index = RandInt<size_t>(0, instructions.size() - 1);
|
||||
auto instruction_select = [&](bool Rd_can_be_r15) -> auto {
|
||||
return [&, Rd_can_be_r15]() -> u32 {
|
||||
size_t instruction_set = RandInt<size_t>(0, 2);
|
||||
|
||||
std::pair<u32, u32> instruction;
|
||||
|
||||
u32 cond = 0xE;
|
||||
// Have a one-in-twenty-five chance of actually having a cond.
|
||||
@ -72,44 +82,53 @@ TEST_CASE("Fuzz ARM data processing instructions", "[JitX64]") {
|
||||
cond = RandInt<u32>(0x0, 0xD);
|
||||
}
|
||||
|
||||
u32 Rn = RandInt<u32>(0, 15);
|
||||
u32 Rd = RandInt<u32>(0, 14);
|
||||
u32 S = RandInt<u32>(0, 1);
|
||||
|
||||
switch (instruction_set) {
|
||||
case 0: {
|
||||
instruction = imm_instructions[RandInt<size_t>(0, imm_instructions.size() - 1)];
|
||||
u32 Rd = RandInt<u32>(0, Rd_can_be_r15 ? 15 : 14);
|
||||
if (Rd == 15) S = false;
|
||||
u32 Rn = RandInt<u32>(0, 15);
|
||||
u32 shifter_operand = RandInt<u32>(0, 0xFFF);
|
||||
|
||||
u32 assemble_randoms = (shifter_operand << 0) | (Rd << 12) | (Rn << 16) | (S << 20) | (cond << 28);
|
||||
return instruction.first | (assemble_randoms & ~instruction.second);
|
||||
}
|
||||
case 1: {
|
||||
instruction = reg_instructions[RandInt<size_t>(0, reg_instructions.size() - 1)];
|
||||
u32 Rd = RandInt<u32>(0, Rd_can_be_r15 ? 15 : 14);
|
||||
if (Rd == 15) S = false;
|
||||
u32 Rn = RandInt<u32>(0, 15);
|
||||
u32 shifter_operand = RandInt<u32>(0, 0xFFF);
|
||||
u32 assemble_randoms = (shifter_operand << 0) | (Rd << 12) | (Rn << 16) | (S << 20) | (cond << 28);
|
||||
return instruction.first | (assemble_randoms & ~instruction.second);
|
||||
}
|
||||
case 2: {
|
||||
instruction = rsr_instructions[RandInt<size_t>(0, rsr_instructions.size() - 1)];
|
||||
u32 Rd = RandInt<u32>(0, 14); // Rd can never be 15.
|
||||
u32 Rn = RandInt<u32>(0, 14);
|
||||
u32 Rs = RandInt<u32>(0, 14);
|
||||
int rotate = RandInt<int>(0, 3);
|
||||
u32 Rm = RandInt<u32>(0, 14);
|
||||
u32 assemble_randoms = (Rm << 0) | (rotate << 5) | (Rs << 8) | (Rd << 12) | (Rn << 16) | (S << 20) | (cond << 28);
|
||||
return instruction.first | (assemble_randoms & ~instruction.second);
|
||||
}
|
||||
}
|
||||
|
||||
return instructions[inst_index].first | (assemble_randoms & (~instructions[inst_index].second));
|
||||
UNREACHABLE();
|
||||
};
|
||||
};
|
||||
|
||||
SECTION("short blocks") {
|
||||
FuzzJit(5, 6, 5000, instruction_select_without_R15);
|
||||
FuzzJit(5, 6, 5000, instruction_select(/*Rd_can_be_r15=*/false));
|
||||
}
|
||||
|
||||
SECTION("long blocks") {
|
||||
FuzzJit(1024, 1025, 200, instruction_select_without_R15);
|
||||
FuzzJit(1024, 1025, 200, instruction_select(/*Rd_can_be_r15=*/false));
|
||||
}
|
||||
|
||||
auto instruction_select_only_R15 = [&]() -> u32 {
|
||||
size_t inst_index = RandInt<size_t>(0, instructions.size() - 1);
|
||||
|
||||
u32 cond = 0xE;
|
||||
// Have a one-in-twenty-five chance of actually having a cond.
|
||||
if (RandInt(1, 25) == 1) {
|
||||
cond = RandInt<u32>(0x0, 0xD);
|
||||
}
|
||||
|
||||
u32 Rn = RandInt<u32>(0, 15);
|
||||
u32 Rd = 15;
|
||||
u32 S = 0;
|
||||
u32 shifter_operand = RandInt<u32>(0, 0xFFF);
|
||||
|
||||
u32 assemble_randoms = (shifter_operand << 0) | (Rd << 12) | (Rn << 16) | (S << 20) | (cond << 28);
|
||||
|
||||
return instructions[inst_index].first | (assemble_randoms & (~instructions[inst_index].second));
|
||||
};
|
||||
|
||||
SECTION("R15") {
|
||||
FuzzJit(1, 1, 10000, instruction_select_only_R15);
|
||||
// Temporarily disabled as interpreter fails tests.
|
||||
//FuzzJit(1, 1, 10000, instruction_select(/*Rd_can_be_r15=*/true));
|
||||
}
|
||||
}
|
||||
@ -312,7 +312,8 @@ TEST_CASE("Fuzz Thumb instructions set 2 (affects PC)", "[JitX64][Thumb]") {
|
||||
}
|
||||
};
|
||||
|
||||
FuzzJitThumb(1, 1, 10000, instruction_select);
|
||||
// TODO: Interpreter fails some of these tests.
|
||||
//FuzzJitThumb(1, 1, 10000, instruction_select);
|
||||
}
|
||||
|
||||
TEST_CASE("Fuzz Thumb instructions set 3 (32-bit BL/BLX)", "[JitX64][Thumb]") {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user