diff options
Diffstat (limited to 'c_compiler/src/expression.cpp')
| -rw-r--r-- | c_compiler/src/expression.cpp | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/c_compiler/src/expression.cpp b/c_compiler/src/expression.cpp index 6c1ba97..dea282f 100644 --- a/c_compiler/src/expression.cpp +++ b/c_compiler/src/expression.cpp @@ -69,7 +69,7 @@ VariableStackBindings AdditiveExpression::printasm(VariableStackBindings binding // currently using signed and sub because I only have signed numbers implemented // must update this as I add more types if(operation == "+") - std::cout << "\tadd\t$2,$2,$3" << std::endl; + std::cout << "\tadd\t$2,$3,$2" << std::endl; else if(operation == "-") std::cout << "\tsub\t$2,$3,$2" << std::endl; else @@ -79,6 +79,37 @@ VariableStackBindings AdditiveExpression::printasm(VariableStackBindings binding } +// Multiplicative Expression definition + + +MultiplicativeExpression::MultiplicativeExpression(Expression* _lhs, const std::string& _operation, Expression* _rhs) + : OperationExpression(_lhs, _rhs), operation(_operation) +{} + +VariableStackBindings MultiplicativeExpression::printasm(VariableStackBindings bindings) const +{ + lhs->printasm(bindings); + + std::cout << "\tmove\t$3,$2" << std::endl; + + rhs->printasm(bindings); + + // then perform the right operation + if(operation == "*") + std::cout << "\tmul\t$2,$3,$2" << std::endl; + else if(operation == "/" || operation == "%") { + std::cout << "\tdiv\t$3,$2" << std::endl; + if(operation == "/") + std::cout << "\tmflo\t$2" << std::endl; + else + std::cout << "\tmfhi\t$2" << std::endl; + } else + std::cerr << "Don't recognize symbol '" << operation << "'" << std::endl; + + return bindings; +} + + // Identifier definition Identifier::Identifier(const std::string& id) |