Exemplo n.º 1
0
  @Override
  public void emitCode(GluonOutput code) {
    code.comment("Function: " + funcName.getValue());
    String funcLabel = GluonFunction.getLabel(funcName.getValue());
    // Setup variables passed in on stack for use
    int offset = 4; // + 4 * parameters.size();
    int used = 4;
    for (Variable parameter : parameters) {
      int stackOffset = offset + used;
      used += 4;
      code.code(parameter.getLabel() + " EQU EBP + " + stackOffset);
    }
    // Function
    code.label(funcLabel);
    // Push BP
    code.code("PUSH EBP");
    // Mov BP, SP
    code.code("MOV EBP, ESP");
    // Local variables
    scope.emitCreateScope(code);
    // Push all reg
    code.code("PUSH EAX");
    code.code("PUSH EBX");
    code.code("PUSH ECX");
    code.code("PUSH EDX");
    // Actual function logic
    code.comment("Function code start");
    logic.emitCode(code);
    code.comment("Function code end");
    // Pop all reg
    code.code("POP EDX");
    code.code("POP ECX");
    code.code("POP EBX");
    code.code("POP EAX");
    // Local variables
    scope.emitDistroyScope(code);
    // Pop BP
    code.code("POP EBP");
    // Ret paramaters
    code.code("RET");

    scope.buildRestore(code, parameters, true);
    code.comment("Function end: " + funcName.getValue());
  }
Exemplo n.º 2
0
  @Override
  public void emitCode(GluonOutput code) {
    // Creae labels
    String labelStart = GluonLabels.createLabel(first, "start");
    String labelEnd = GluonLabels.createLabel(first, "end");
    GluonLabels.addEndLabel(labelEnd);

    code.comment("While Statement");
    code.label(labelStart);
    testExp.emitCode(code);
    code.code("TEST AL, AL ;EAX, EAX");
    code.code("JZ " + labelEnd);
    statements.emitCode(code);
    code.code("JMP " + labelStart);
    code.label(labelEnd);
    code.comment("End While");

    GluonLabels.removeEndLabel(labelEnd);
  }