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Implement XOR (without offsets)
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DataHoarder 2021-08-03 17:54:27 +02:00
parent 6d8b3f0e09
commit c4a98361b1
1 changed files with 29 additions and 0 deletions
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29
src/instructions/Instruction.cpp
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@ -111,6 +111,35 @@ namespace Instruction {
return std::move(i);
});
//XOR P1, P2 = A, P3 = B
addOperator("XOR", 3, [](const parseOperatorResult &op, const std::vector<Token> &tokens) -> std::unique_ptr<Instruction> {
if(op.offset1 != 0){
throw std::runtime_error("XOR cannot use addressing offsets");
}
auto c = std::make_unique<Container>("XOR op = a + b - (a & b) - (a & b)");
/*
* Non-offset version
* AND S1, A, B
* ADD S0, A, B
* SUB S0, S0, S1
* SUB P1, S0, S1
*/
if(tokens.at(2).getType() == Token::Type::Immediate){
c->addInstruction(std::make_unique<CalcImm>(Calc::Operation::AND, 0, (uint32_t) MgmtRegisters::std_SCRATCH_1, tokens.at(1).getNumericValue(), tokens.at(2).getNumericValue()), "XOR, s1 = a & b");
c->addInstruction(std::make_unique<CalcImm>(Calc::Operation::ADD, 0, (uint32_t) MgmtRegisters::std_SCRATCH_0, tokens.at(1).getNumericValue(), tokens.at(2).getNumericValue()), "XOR, s0 = a + b");
}else{
c->addInstruction(std::make_unique<Calc>(Calc::Operation::AND, 0, (uint32_t) MgmtRegisters::std_SCRATCH_1, tokens.at(1).getNumericValue(), tokens.at(2).getNumericValue()), "XOR, s1 = a & b");
c->addInstruction(std::make_unique<Calc>(Calc::Operation::ADD, 0, (uint32_t) MgmtRegisters::std_SCRATCH_0, tokens.at(1).getNumericValue(), tokens.at(2).getNumericValue()), "XOR, s0 = a + b");
}
c->addInstruction(std::make_unique<Calc>(Calc::Operation::SUB, 0, (uint32_t) MgmtRegisters::std_SCRATCH_0, (uint32_t) MgmtRegisters::std_SCRATCH_0, (uint32_t) MgmtRegisters::std_SCRATCH_1), "XOR, s0 = s0 - s1");
c->addInstruction(std::make_unique<Calc>(Calc::Operation::SUB, 0, tokens.at(0).getNumericValue(), (uint32_t) MgmtRegisters::std_SCRATCH_0, (uint32_t) MgmtRegisters::std_SCRATCH_1), "XOR, result = s0 - s1");
return std::move(c);
});
addOperator("AND", 3, CalcImm::fromAndTokens);
addOperator("OR", 3, CalcImm::fromOrTokens);