Esempio n. 1
0
  public FunctionContext(
      TranslationContext translationContext,
      GimpleFunction gimpleFunction,
      JimpleMethodBuilder builder) {
    this.gimpleFunction = gimpleFunction;
    this.translationContext = translationContext;
    this.builder = builder;

    VarUsageInspector varUsage = new VarUsageInspector(gimpleFunction);

    for (GimpleVarDecl decl : gimpleFunction.getVariableDeclarations()) {
      Variable localVariable =
          translationContext
              .resolveType(decl.getType())
              .createLocalVariable(this, decl.getName(), varUsage.getUsage(decl.getId()));

      symbolTable.put(decl.getId(), localVariable);
    }

    for (GimpleParameter param : gimpleFunction.getParameters()) {
      ImType type = translationContext.resolveType(param.getType());
      builder.addParameter(type.paramType(), "p_" + param.getName());
      ImExpr paramExpr =
          JvmExprs.toExpr(this, new JimpleExpr("p_" + param.getName()), type.paramType(), true);

      Variable variable =
          type.createLocalVariable(this, param.getName(), varUsage.getUsage(param.getId()));
      variable.writeAssignment(this, paramExpr);

      symbolTable.put(param.getId(), variable);
    }
  }
Esempio n. 2
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  public ImExpr lookupVar(GimpleExpr gimpleExpr) {
    if (gimpleExpr instanceof SymbolRef) {
      SymbolRef symbol = (SymbolRef) gimpleExpr;
      ImExpr variable = symbolTable.get(symbol.getId());

      if (variable != null) {
        return variable;
      }

      if (symbol.getName() != null) {
        variable = translationContext.findGlobal(symbol.getName());
      }

      if (variable == null) {
        throw new IllegalArgumentException(
            "No such variable '" + gimpleExpr + "' (id=" + symbol.getId() + ")");
      }
      return variable;
    } else {
      throw new UnsupportedOperationException(
          "Expected GimpleVar, got: "
              + gimpleExpr
              + " ["
              + gimpleExpr.getClass().getSimpleName()
              + "]");
    }
  }
Esempio n. 3
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  public ImExpr resolveExpr(GimpleExpr gimpleExpr) {
    if (gimpleExpr instanceof GimpleMemRef) {
      return resolveExpr(((GimpleMemRef) gimpleExpr).getPointer()).memref();
    } else if (gimpleExpr instanceof SymbolRef) {
      return lookupVar(gimpleExpr);

    } else if (gimpleExpr instanceof GimpleStringConstant) {
      return new ImStringConstant((GimpleStringConstant) gimpleExpr);

    } else if (gimpleExpr instanceof GimpleConstant) {
      return new ImPrimitiveConstant(this, (GimpleConstant) gimpleExpr);

    } else if (gimpleExpr instanceof GimpleAddressOf) {
      return resolveExpr(((GimpleAddressOf) gimpleExpr).getValue()).addressOf();

    } else if (gimpleExpr instanceof GimpleFunctionRef) {
      return new ImFunctionExpr(
          translationContext.resolveMethod(((GimpleFunctionRef) gimpleExpr).getName()));

    } else if (gimpleExpr instanceof GimpleArrayRef) {
      GimpleArrayRef arrayRef = (GimpleArrayRef) gimpleExpr;
      return resolveExpr(arrayRef.getArray()).elementAt(resolveExpr(arrayRef.getIndex()));

    } else if (gimpleExpr instanceof GimpleComponentRef) {
      GimpleComponentRef componentRef = (GimpleComponentRef) gimpleExpr;
      return resolveExpr(componentRef.getValue()).member(componentRef.getMember());

    } else if (gimpleExpr instanceof GimpleConstantRef) {
      return resolveExpr(((GimpleConstantRef) gimpleExpr).getValue());
    }
    throw new UnsupportedOperationException(gimpleExpr.toString());
  }
Esempio n. 4
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 public MethodRef resolveMethod(GimpleCall call) {
   return translationContext.resolveMethod(call, getCallingConvention());
 }