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Implement data processing instructions

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ADC, ADD, AND, BIC, CMN, CMP, EOR, MOV, MVN, ORR, RSB, RSC, SBC, SUB,
TEQ, TST

The code could use some serious deduplication...
This commit is contained in:
Tillmann Karras 2016-08-03 00:44:35 +01:00
parent fe71cc9d78
commit 30a90295b9
4 changed files with 870 additions and 92 deletions
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92
src/frontend/decoder/arm.h
View file

@ -89,53 +89,53 @@ boost::optional<const ArmMatcher<V>&> DecodeArm(u32 instruction) {
// Data Processing instructions // Data Processing instructions
INST(&V::arm_ADC_imm, "ADC (imm)", "cccc0010101Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_ADC_imm, "ADC (imm)", "cccc0010101Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_ADC_reg, "ADC (reg)", "cccc0000101Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_ADC_reg, "ADC (reg)", "cccc0000101Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_ADC_rsr, "ADC (rsr)", "cccc0000101Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_ADC_rsr, "ADC (rsr)", "cccc0000101Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_ADD_imm, "ADD (imm)", "cccc0010100Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_ADD_imm, "ADD (imm)", "cccc0010100Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_ADD_reg, "ADD (reg)", "cccc0000100Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_ADD_reg, "ADD (reg)", "cccc0000100Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_ADD_rsr, "ADD (rsr)", "cccc0000100Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_ADD_rsr, "ADD (rsr)", "cccc0000100Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_AND_imm, "AND (imm)", "cccc0010000Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_AND_imm, "AND (imm)", "cccc0010000Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_AND_reg, "AND (reg)", "cccc0000000Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_AND_reg, "AND (reg)", "cccc0000000Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_AND_rsr, "AND (rsr)", "cccc0000000Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_AND_rsr, "AND (rsr)", "cccc0000000Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_BIC_imm, "BIC (imm)", "cccc0011110Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_BIC_imm, "BIC (imm)", "cccc0011110Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_BIC_reg, "BIC (reg)", "cccc0001110Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_BIC_reg, "BIC (reg)", "cccc0001110Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_BIC_rsr, "BIC (rsr)", "cccc0001110Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_BIC_rsr, "BIC (rsr)", "cccc0001110Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_CMN_imm, "CMN (imm)", "cccc00110111nnnn0000rrrrvvvvvvvv"), // all INST(&V::arm_CMN_imm, "CMN (imm)", "cccc00110111nnnn0000rrrrvvvvvvvv"), // all
//INST(&V::arm_CMN_reg, "CMN (reg)", "cccc00010111nnnn0000vvvvvrr0mmmm"), // all INST(&V::arm_CMN_reg, "CMN (reg)", "cccc00010111nnnn0000vvvvvrr0mmmm"), // all
//INST(&V::arm_CMN_rsr, "CMN (rsr)", "cccc00010111nnnn0000ssss0rr1mmmm"), // all INST(&V::arm_CMN_rsr, "CMN (rsr)", "cccc00010111nnnn0000ssss0rr1mmmm"), // all
INST(&V::arm_CMP_imm, "CMP (imm)", "cccc00110101nnnn0000rrrrvvvvvvvv"), // all INST(&V::arm_CMP_imm, "CMP (imm)", "cccc00110101nnnn0000rrrrvvvvvvvv"), // all
//INST(&V::arm_CMP_reg, "CMP (reg)", "cccc00010101nnnn0000vvvvvrr0mmmm"), // all INST(&V::arm_CMP_reg, "CMP (reg)", "cccc00010101nnnn0000vvvvvrr0mmmm"), // all
//INST(&V::arm_CMP_rsr, "CMP (rsr)", "cccc00010101nnnn0000ssss0rr1mmmm"), // all INST(&V::arm_CMP_rsr, "CMP (rsr)", "cccc00010101nnnn0000ssss0rr1mmmm"), // all
//INST(&V::arm_EOR_imm, "EOR (imm)", "cccc0010001Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_EOR_imm, "EOR (imm)", "cccc0010001Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_EOR_reg, "EOR (reg)", "cccc0000001Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_EOR_reg, "EOR (reg)", "cccc0000001Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_EOR_rsr, "EOR (rsr)", "cccc0000001Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_EOR_rsr, "EOR (rsr)", "cccc0000001Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_MOV_imm, "MOV (imm)", "cccc0011101S0000ddddrrrrvvvvvvvv"), // all INST(&V::arm_MOV_imm, "MOV (imm)", "cccc0011101S0000ddddrrrrvvvvvvvv"), // all
//INST(&V::arm_MOV_reg, "MOV (reg)", "cccc0001101S0000ddddvvvvvrr0mmmm"), // all INST(&V::arm_MOV_reg, "MOV (reg)", "cccc0001101S0000ddddvvvvvrr0mmmm"), // all
//INST(&V::arm_MOV_rsr, "MOV (rsr)", "cccc0001101S0000ddddssss0rr1mmmm"), // all INST(&V::arm_MOV_rsr, "MOV (rsr)", "cccc0001101S0000ddddssss0rr1mmmm"), // all
//INST(&V::arm_MVN_imm, "MVN (imm)", "cccc0011111S0000ddddrrrrvvvvvvvv"), // all INST(&V::arm_MVN_imm, "MVN (imm)", "cccc0011111S0000ddddrrrrvvvvvvvv"), // all
//INST(&V::arm_MVN_reg, "MVN (reg)", "cccc0001111S0000ddddvvvvvrr0mmmm"), // all INST(&V::arm_MVN_reg, "MVN (reg)", "cccc0001111S0000ddddvvvvvrr0mmmm"), // all
//INST(&V::arm_MVN_rsr, "MVN (rsr)", "cccc0001111S0000ddddssss0rr1mmmm"), // all INST(&V::arm_MVN_rsr, "MVN (rsr)", "cccc0001111S0000ddddssss0rr1mmmm"), // all
//INST(&V::arm_ORR_imm, "ORR (imm)", "cccc0011100Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_ORR_imm, "ORR (imm)", "cccc0011100Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_ORR_reg, "ORR (reg)", "cccc0001100Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_ORR_reg, "ORR (reg)", "cccc0001100Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_ORR_rsr, "ORR (rsr)", "cccc0001100Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_ORR_rsr, "ORR (rsr)", "cccc0001100Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_RSB_imm, "RSB (imm)", "cccc0010011Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_RSB_imm, "RSB (imm)", "cccc0010011Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_RSB_reg, "RSB (reg)", "cccc0000011Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_RSB_reg, "RSB (reg)", "cccc0000011Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_RSB_rsr, "RSB (rsr)", "cccc0000011Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_RSB_rsr, "RSB (rsr)", "cccc0000011Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_RSC_imm, "RSC (imm)", "cccc0010111Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_RSC_imm, "RSC (imm)", "cccc0010111Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_RSC_reg, "RSC (reg)", "cccc0000111Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_RSC_reg, "RSC (reg)", "cccc0000111Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_RSC_rsr, "RSC (rsr)", "cccc0000111Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_RSC_rsr, "RSC (rsr)", "cccc0000111Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_SBC_imm, "SBC (imm)", "cccc0010110Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_SBC_imm, "SBC (imm)", "cccc0010110Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_SBC_reg, "SBC (reg)", "cccc0000110Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_SBC_reg, "SBC (reg)", "cccc0000110Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_SBC_rsr, "SBC (rsr)", "cccc0000110Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_SBC_rsr, "SBC (rsr)", "cccc0000110Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_SUB_imm, "SUB (imm)", "cccc0010010Snnnnddddrrrrvvvvvvvv"), // all INST(&V::arm_SUB_imm, "SUB (imm)", "cccc0010010Snnnnddddrrrrvvvvvvvv"), // all
//INST(&V::arm_SUB_reg, "SUB (reg)", "cccc0000010Snnnnddddvvvvvrr0mmmm"), // all INST(&V::arm_SUB_reg, "SUB (reg)", "cccc0000010Snnnnddddvvvvvrr0mmmm"), // all
//INST(&V::arm_SUB_rsr, "SUB (rsr)", "cccc0000010Snnnnddddssss0rr1mmmm"), // all INST(&V::arm_SUB_rsr, "SUB (rsr)", "cccc0000010Snnnnddddssss0rr1mmmm"), // all
//INST(&V::arm_TEQ_imm, "TEQ (imm)", "cccc00110011nnnn0000rrrrvvvvvvvv"), // all INST(&V::arm_TEQ_imm, "TEQ (imm)", "cccc00110011nnnn0000rrrrvvvvvvvv"), // all
//INST(&V::arm_TEQ_reg, "TEQ (reg)", "cccc00010011nnnn0000vvvvvrr0mmmm"), // all INST(&V::arm_TEQ_reg, "TEQ (reg)", "cccc00010011nnnn0000vvvvvrr0mmmm"), // all
//INST(&V::arm_TEQ_rsr, "TEQ (rsr)", "cccc00010011nnnn0000ssss0rr1mmmm"), // all INST(&V::arm_TEQ_rsr, "TEQ (rsr)", "cccc00010011nnnn0000ssss0rr1mmmm"), // all
//INST(&V::arm_TST_imm, "TST (imm)", "cccc00110001nnnn0000rrrrvvvvvvvv"), // all INST(&V::arm_TST_imm, "TST (imm)", "cccc00110001nnnn0000rrrrvvvvvvvv"), // all
//INST(&V::arm_TST_reg, "TST (reg)", "cccc00010001nnnn0000vvvvvrr0mmmm"), // all INST(&V::arm_TST_reg, "TST (reg)", "cccc00010001nnnn0000vvvvvrr0mmmm"), // all
//INST(&V::arm_TST_rsr, "TST (rsr)", "cccc00010001nnnn0000ssss0rr1mmmm"), // all INST(&V::arm_TST_rsr, "TST (rsr)", "cccc00010001nnnn0000ssss0rr1mmmm"), // all
// Exception Generating instructions // Exception Generating instructions
//INST(&V::arm_BKPT, "BKPT", "cccc00010010vvvvvvvvvvvv0111vvvv"), // v5 //INST(&V::arm_BKPT, "BKPT", "cccc00010010vvvvvvvvvvvv0111vvvv"), // v5

45
src/frontend/translate/translate_arm.cpp
View file

@ -93,5 +93,50 @@ bool ArmTranslatorVisitor::LinkToNextInstruction() {
return false; return false;
} }
IREmitter::ResultAndCarry ArmTranslatorVisitor::EmitImmShift(IR::Value value, ShiftType type, Imm5 imm5, IR::Value carry_in) {
IREmitter::ResultAndCarry result_and_carry;
switch (type)
{
case ShiftType::LSL:
result_and_carry = ir.LogicalShiftLeft(value, ir.Imm8(imm5), carry_in);
break;
case ShiftType::LSR:
imm5 = imm5 ? imm5 : 32;
result_and_carry = ir.LogicalShiftRight(value, ir.Imm8(imm5), carry_in);
break;
case ShiftType::ASR:
imm5 = imm5 ? imm5 : 32;
result_and_carry = ir.ArithmeticShiftRight(value, ir.Imm8(imm5), carry_in);
break;
case ShiftType::ROR:
if (imm5)
result_and_carry = ir.RotateRight(value, ir.Imm8(imm5), carry_in);
else
result_and_carry = ir.RotateRightExtended(value, carry_in);
break;
}
return result_and_carry;
}
IREmitter::ResultAndCarry ArmTranslatorVisitor::EmitRegShift(IR::Value value, ShiftType type, IR::Value amount, IR::Value carry_in) {
IREmitter::ResultAndCarry result_and_carry;
switch (type)
{
case ShiftType::LSL:
result_and_carry = ir.LogicalShiftLeft(value, amount, carry_in);
break;
case ShiftType::LSR:
result_and_carry = ir.LogicalShiftRight(value, amount, carry_in);
break;
case ShiftType::ASR:
result_and_carry = ir.ArithmeticShiftRight(value, amount, carry_in);
break;
case ShiftType::ROR:
result_and_carry = ir.RotateRight(value, amount, carry_in);
break;
}
return result_and_carry;
}
} // namespace Arm } // namespace Arm
} // namespace Dynarmic } // namespace Dynarmic

807
src/frontend/translate/translate_arm/data_processing.cpp
View file

@ -10,9 +10,9 @@ namespace Dynarmic {
namespace Arm { namespace Arm {
bool ArmTranslatorVisitor::arm_ADC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_ADC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
u32 imm32 = ArmExpandImm(rotate, imm8);
// ADC{S}<c> <Rd>, <Rn>, #<imm> // ADC{S}<c> <Rd>, <Rn>, #<imm>
if (ConditionPassed(cond)) { if (ConditionPassed(cond)) {
u32 imm32 = ArmExpandImm(rotate, imm8);
auto result = ir.AddWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.GetCFlag()); auto result = ir.AddWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.GetCFlag());
if (d == Reg::PC) { if (d == Reg::PC) {
@ -34,52 +34,290 @@ bool ArmTranslatorVisitor::arm_ADC_imm(Cond cond, bool S, Reg n, Reg d, int rota
} }
bool ArmTranslatorVisitor::arm_ADC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_ADC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
auto result = ir.AddWithCarry(ir.GetRegister(n), shifted.result, ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_ADC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_ADC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.AddWithCarry(ir.GetRegister(n), shifted.result, ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_ADD_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_ADD_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
u32 imm32 = ArmExpandImm(rotate, imm8);
auto result = ir.AddWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.Imm1(0));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_ADD_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_ADD_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
auto result = ir.AddWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(0));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_ADD_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_ADD_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.AddWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(0));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_AND_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_AND_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.And(ir.GetRegister(n), ir.Imm32(imm_carry.imm32));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_AND_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_AND_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = ir.And(ir.GetRegister(n), shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_AND_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_AND_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.And(ir.GetRegister(n), shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_BIC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_BIC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.And(ir.GetRegister(n), ir.Not(ir.Imm32(imm_carry.imm32)));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_BIC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_BIC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = ir.And(ir.GetRegister(n), ir.Not(shifted.result));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_BIC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_BIC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.And(ir.GetRegister(n), ir.Not(shifted.result));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_CMN_imm(Cond cond, Reg n, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_CMN_imm(Cond cond, Reg n, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
u32 imm32 = ArmExpandImm(rotate, imm8);
auto result = ir.AddWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.Imm1(0));
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
return true;
} }
bool ArmTranslatorVisitor::arm_CMN_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_CMN_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
auto result = ir.AddWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(0));
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
return true;
} }
bool ArmTranslatorVisitor::arm_CMN_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_CMN_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.AddWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(0));
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
return true;
} }
bool ArmTranslatorVisitor::arm_CMP_imm(Cond cond, Reg n, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_CMP_imm(Cond cond, Reg n, int rotate, Imm8 imm8) {
u32 imm32 = ArmExpandImm(rotate, imm8);
// CMP<c> <Rn>, #<imm> // CMP<c> <Rn>, #<imm>
if (ConditionPassed(cond)) { if (ConditionPassed(cond)) {
u32 imm32 = ArmExpandImm(rotate, imm8);
auto result = ir.SubWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.Imm1(1)); auto result = ir.SubWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.Imm1(1));
ir.SetNFlag(ir.MostSignificantBit(result.result)); ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result)); ir.SetZFlag(ir.IsZero(result.result));
@ -90,101 +328,578 @@ bool ArmTranslatorVisitor::arm_CMP_imm(Cond cond, Reg n, int rotate, Imm8 imm8)
} }
bool ArmTranslatorVisitor::arm_CMP_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_CMP_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
auto result = ir.SubWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(1));
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
return true;
} }
bool ArmTranslatorVisitor::arm_CMP_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_CMP_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.SubWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(1));
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
return true;
} }
bool ArmTranslatorVisitor::arm_EOR_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_EOR_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.Eor(ir.GetRegister(n), ir.Imm32(imm_carry.imm32));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_EOR_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_EOR_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = ir.Eor(ir.GetRegister(n), shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_EOR_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_EOR_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.Eor(ir.GetRegister(n), shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_MOV_imm(Cond cond, bool S, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_MOV_imm(Cond cond, bool S, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.Imm32(imm_carry.imm32);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_MOV_reg(Cond cond, bool S, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_MOV_reg(Cond cond, bool S, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = shifted.result;
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_MOV_rsr(Cond cond, bool S, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_MOV_rsr(Cond cond, bool S, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = shifted.result;
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_MVN_imm(Cond cond, bool S, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_MVN_imm(Cond cond, bool S, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.Not(ir.Imm32(imm_carry.imm32));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_MVN_reg(Cond cond, bool S, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_MVN_reg(Cond cond, bool S, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = ir.Not(shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_MVN_rsr(Cond cond, bool S, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_MVN_rsr(Cond cond, bool S, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.Not(shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_ORR_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_ORR_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.Or(ir.GetRegister(n), ir.Imm32(imm_carry.imm32));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_ORR_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_ORR_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = ir.Or(ir.GetRegister(n), shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_ORR_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_ORR_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.Or(ir.GetRegister(n), shifted.result);
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_RSB_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_RSB_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); return InterpretThisInstruction();
} }
bool ArmTranslatorVisitor::arm_RSB_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_RSB_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); return InterpretThisInstruction();
} }
bool ArmTranslatorVisitor::arm_RSB_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_RSB_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); return InterpretThisInstruction();
} }
bool ArmTranslatorVisitor::arm_RSC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_RSC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
u32 imm32 = ArmExpandImm(rotate, imm8);
auto result = ir.SubWithCarry(ir.Imm32(imm32), ir.GetRegister(n), ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_RSC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_RSC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
auto result = ir.SubWithCarry(shifted.result, ir.GetRegister(n), ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_RSC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_RSC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.SubWithCarry(shifted.result, ir.GetRegister(n), ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_SBC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_SBC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
u32 imm32 = ArmExpandImm(rotate, imm8);
auto result = ir.SubWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_SBC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_SBC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
auto result = ir.SubWithCarry(ir.GetRegister(n), shifted.result, ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_SBC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_SBC_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.SubWithCarry(ir.GetRegister(n), shifted.result, ir.GetCFlag());
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_SUB_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_SUB_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
u32 imm32 = ArmExpandImm(rotate, imm8);
auto result = ir.SubWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.Imm1(1));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_SUB_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_SUB_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, ir.GetCFlag());
auto result = ir.SubWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(1));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_SUB_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_SUB_rsr(Cond cond, bool S, Reg n, Reg d, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.SubWithCarry(ir.GetRegister(n), shifted.result, ir.Imm1(1));
if (d == Reg::PC) {
ASSERT(!S);
ir.ALUWritePC(result.result);
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
ir.SetRegister(d, result.result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result.result));
ir.SetZFlag(ir.IsZero(result.result));
ir.SetCFlag(result.carry);
ir.SetVFlag(result.overflow);
}
}
return true;
} }
bool ArmTranslatorVisitor::arm_TEQ_imm(Cond cond, Reg n, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_TEQ_imm(Cond cond, Reg n, int rotate, Imm8 imm8) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.Eor(ir.GetRegister(n), ir.Imm32(imm_carry.imm32));
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
return true;
} }
bool ArmTranslatorVisitor::arm_TEQ_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_TEQ_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = ir.Eor(ir.GetRegister(n), shifted.result);
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
return true;
} }
bool ArmTranslatorVisitor::arm_TEQ_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_TEQ_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.Eor(ir.GetRegister(n), shifted.result);
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
return true;
} }
bool ArmTranslatorVisitor::arm_TST_imm(Cond cond, Reg n, int rotate, Imm8 imm8) { bool ArmTranslatorVisitor::arm_TST_imm(Cond cond, Reg n, int rotate, Imm8 imm8) {
//auto result = ArmExpandImm_C(rotate, imm8); if (ConditionPassed(cond)) {
return InterpretThisInstruction(); auto imm_carry = ArmExpandImm_C(rotate, imm8, ir.GetCFlag());
auto result = ir.And(ir.GetRegister(n), ir.Imm32(imm_carry.imm32));
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
return true;
} }
bool ArmTranslatorVisitor::arm_TST_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_TST_reg(Cond cond, Reg n, Imm5 imm5, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (ConditionPassed(cond)) {
auto carry_in = ir.GetCFlag();
auto shifted = EmitImmShift(ir.GetRegister(m), shift, imm5, carry_in);
auto result = ir.And(ir.GetRegister(n), shifted.result);
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
return true;
} }
bool ArmTranslatorVisitor::arm_TST_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) { bool ArmTranslatorVisitor::arm_TST_rsr(Cond cond, Reg n, Reg s, ShiftType shift, Reg m) {
return InterpretThisInstruction(); if (n == Reg::PC || m == Reg::PC || s == Reg::PC)
return UnpredictableInstruction();
if (ConditionPassed(cond)) {
auto shift_n = ir.LeastSignificantByte(ir.GetRegister(s));
auto carry_in = ir.GetCFlag();
auto shifted = EmitRegShift(ir.GetRegister(m), shift, shift_n, carry_in);
auto result = ir.And(ir.GetRegister(n), shifted.result);
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(shifted.carry);
}
return true;
} }
} // namespace Arm } // namespace Arm

18
src/frontend/translate/translate_arm/translate_arm.h
View file

@ -43,6 +43,24 @@ struct ArmTranslatorVisitor final {
return rotr(static_cast<u32>(imm8), rotate*2); return rotr(static_cast<u32>(imm8), rotate*2);
} }
struct ImmAndCarry {
u32 imm32;
IR::Value carry;
};
ImmAndCarry ArmExpandImm_C(int rotate, u32 imm8, IR::Value carry_in) {
u32 imm32 = imm8;
auto carry_out = carry_in;
if (rotate) {
imm32 = rotr(imm8, rotate * 2);
carry_out = ir.Imm1(imm32 >> 31 == 1);
}
return {imm32, carry_out};
}
IREmitter::ResultAndCarry EmitImmShift(IR::Value value, ShiftType type, Imm5 imm5, IR::Value carry_in);
IREmitter::ResultAndCarry EmitRegShift(IR::Value value, ShiftType type, IR::Value amount, IR::Value carry_in);
// Data processing instructions // Data processing instructions
bool arm_ADC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8); bool arm_ADC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8);
bool arm_ADC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m); bool arm_ADC_reg(Cond cond, bool S, Reg n, Reg d, Imm5 imm5, ShiftType shift, Reg m);