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Implement SMMLA, SMMLS, SMMUL

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This commit is contained in:
Tillmann Karras 2016-08-06 12:10:43 +01:00
parent 846d07d7b5
commit 55204a80d0
2 changed files with 60 additions and 4 deletions
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44
src/frontend/translate/translate_arm/multiply.cpp
View file

@ -171,15 +171,53 @@ bool ArmTranslatorVisitor::arm_SMULWy(Cond cond, Reg d, Reg m, bool M, Reg n) {
// Multiply (Most significant word) instructions
bool ArmTranslatorVisitor::arm_SMMLA(Cond cond, Reg d, Reg a, Reg m, bool R, Reg n) {
return InterpretThisInstruction();
if (d == Reg::PC || n == Reg::PC || m == Reg::PC /* no check for a */)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto n64 = ir.SignExtendWordToLong(ir.GetRegister(n));
auto m64 = ir.SignExtendWordToLong(ir.GetRegister(m));
auto a64 = ir.Pack2x32To1x64(ir.Imm32(0), ir.GetRegister(a));
auto temp = ir.Add64(a64, ir.Mul64(n64, m64));
auto result_carry = ir.MostSignificantWord(temp);
auto result = result_carry.result;
if (R)
result = ir.AddWithCarry(result, ir.Imm32(0), result_carry.carry).result;
ir.SetRegister(d, result);
}
return true;
}
bool ArmTranslatorVisitor::arm_SMMLS(Cond cond, Reg d, Reg a, Reg m, bool R, Reg n) {
return InterpretThisInstruction();
if (d == Reg::PC || n == Reg::PC || m == Reg::PC || a == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto n64 = ir.SignExtendWordToLong(ir.GetRegister(n));
auto m64 = ir.SignExtendWordToLong(ir.GetRegister(m));
auto a64 = ir.Pack2x32To1x64(ir.Imm32(0), ir.GetRegister(a));
auto temp = ir.Sub64(a64, ir.Mul64(n64, m64));
auto result_carry = ir.MostSignificantWord(temp);
auto result = result_carry.result;
if (R)
result = ir.AddWithCarry(result, ir.Imm32(0), result_carry.carry).result;
ir.SetRegister(d, result);
}
return true;
}
bool ArmTranslatorVisitor::arm_SMMUL(Cond cond, Reg d, Reg m, bool R, Reg n) {
return InterpretThisInstruction();
if (d == Reg::PC || n == Reg::PC || m == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto n64 = ir.SignExtendWordToLong(ir.GetRegister(n));
auto m64 = ir.SignExtendWordToLong(ir.GetRegister(m));
auto product = ir.Mul64(n64, m64);
auto result_carry = ir.MostSignificantWord(product);
auto result = result_carry.result;
if (R)
result = ir.AddWithCarry(result, ir.Imm32(0), result_carry.carry).result;
ir.SetRegister(d, result);
}
return true;
}

20
tests/arm/fuzz_arm.cpp
View file

@ -727,7 +727,7 @@ TEST_CASE("Fuzz ARM multiply instructions", "[JitX64]") {
Dynarmic::Common::Bits<12, 15>(inst) != Dynarmic::Common::Bits<16, 19>(inst);
};
const std::array<InstructionGenerator, 7> instructions = {
const std::array<InstructionGenerator, 10> instructions = {
{
InstructionGenerator("cccc0000001Sddddaaaammmm1001nnnn", validate_d_a_m_n), // MLA
InstructionGenerator("cccc0000000Sdddd0000mmmm1001nnnn", validate_d_m_n), // MUL
@ -737,6 +737,24 @@ TEST_CASE("Fuzz ARM multiply instructions", "[JitX64]") {
InstructionGenerator("cccc00000100ddddaaaammmm1001nnnn", validate_h_l_m_n), // UMAAL
InstructionGenerator("cccc0000101Sddddaaaammmm1001nnnn", validate_h_l_m_n), // UMLAL
InstructionGenerator("cccc0000100Sddddaaaammmm1001nnnn", validate_h_l_m_n), // UMULL
//InstructionGenerator("cccc00010100ddddaaaammmm1xy0nnnn", validate_d_a_m_n), // SMLALxy
//InstructionGenerator("cccc00010000ddddaaaammmm1xy0nnnn", validate_d_a_m_n), // SMLAxy
//InstructionGenerator("cccc00010110dddd0000mmmm1xy0nnnn", validate_d_m_n), // SMULxy
//InstructionGenerator("cccc00010010ddddaaaammmm1y00nnnn", validate_d_a_m_n), // SMLAWy
//InstructionGenerator("cccc00010010dddd0000mmmm1y10nnnn", validate_d_m_n), // SMULWy
InstructionGenerator("cccc01110101dddd1111mmmm00R1nnnn", validate_d_m_n), // SMMUL
InstructionGenerator("cccc01110101ddddaaaammmm00R1nnnn", validate_d_a_m_n), // SMMLA
InstructionGenerator("cccc01110101ddddaaaammmm11R1nnnn", validate_d_a_m_n), // SMMLS
//InstructionGenerator("cccc01110000ddddaaaammmm00M1nnnn", validate_d_a_m_n), // SMLAD
//InstructionGenerator("cccc01110100ddddaaaammmm00M1nnnn", validate_d_a_m_n), // SMLALD
//InstructionGenerator("cccc01110000ddddaaaammmm01M1nnnn", validate_d_a_m_n), // SMLSD
//InstructionGenerator("cccc01110100ddddaaaammmm01M1nnnn", validate_d_a_m_n), // SMLSLD
//InstructionGenerator("cccc01110000dddd1111mmmm00M1nnnn", validate_d_m_n), // SMUAD
//InstructionGenerator("cccc01110000dddd1111mmmm01M1nnnn", validate_d_m_n), // SMUSD
}
};