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Implement code generation for int constatns and returns

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Laborratte 5 2025-05-12 17:39:03 +02:00
parent 2be0298ee7
commit eb8cceacc4
Signed by: Laborratte5
GPG key ID: 3A30072E35202C02
1 changed files with 18 additions and 0 deletions
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18
src/main/java/edu/kit/kastel/vads/compiler/backend/x86asm/X86CodeGenerator.java
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@ -11,8 +11,10 @@ import edu.kit.kastel.vads.compiler.backend.regalloc.Register;
import edu.kit.kastel.vads.compiler.backend.regalloc.RegisterAllocator;
import edu.kit.kastel.vads.compiler.ir.IrGraph;
import edu.kit.kastel.vads.compiler.ir.node.Block;
import edu.kit.kastel.vads.compiler.ir.node.ConstIntNode;
import edu.kit.kastel.vads.compiler.ir.node.Node;
import edu.kit.kastel.vads.compiler.ir.node.ProjNode;
import edu.kit.kastel.vads.compiler.ir.node.ReturnNode;
import edu.kit.kastel.vads.compiler.ir.node.StartNode;
@ -59,6 +61,8 @@ public class X86CodeGenerator implements CodeGenerator {
// TODO: implement code generation
switch (node) {
case ConstIntNode c -> constIntNode(builder, registers, c);
case ReturnNode r -> returnNode(builder, registers, r);
case Block _, ProjNode _, StartNode _ -> {
// do nothing, skip line break
return;
@ -66,6 +70,20 @@ public class X86CodeGenerator implements CodeGenerator {
default ->
throw new UnsupportedOperationException("Codegeneration for '" + node.toString() + "' is not implemented.");
}
builder.append("\n");
}
private static void returnNode(StringBuilder builder, Map<Node, Register> registers, ReturnNode r) {
builder.repeat(" ", 2)
.append("ret");
}
private static void constIntNode(StringBuilder builder, Map<Node, Register> registers, ConstIntNode c) {
builder.repeat(" ", 2)
.append("mov $")
.append(c.value())
.append(",")
.append(registers.get(c));
}
}