runtime/vm/type_testing_stubs_x64.cc

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

#include "vm/globals.h"

#if defined(TARGET_ARCH_X64) && !defined(DART_PRECOMPILED_RUNTIME)

#include "vm/type_testing_stubs.h"

#define __ assembler->

namespace dart {

void TypeTestingStubGenerator::BuildOptimizedTypeTestStub(
    Assembler* assembler,
    HierarchyInfo* hi,
    const Type& type,
    const Class& type_class) {
  const Register kInstanceReg = RAX;
  const Register kClassIdReg = TMP;

  BuildOptimizedTypeTestStubFastCases(assembler, hi, type, type_class,
                                      kInstanceReg, kClassIdReg);

  __ movq(CODE_REG, Address(THR, Thread::slow_type_test_stub_offset()));
  __ jmp(FieldAddress(CODE_REG, Code::entry_point_offset()));
}

void TypeTestingStubGenerator::
    BuildOptimizedSubclassRangeCheckWithTypeArguments(Assembler* assembler,
                                                      HierarchyInfo* hi,
                                                      const Class& type_class,
                                                      const TypeArguments& tp,
                                                      const TypeArguments& ta) {
  const Register kInstanceReg = RAX;
  const Register kInstanceTypeArguments = RSI;
  const Register kClassIdReg = TMP;

  BuildOptimizedSubclassRangeCheckWithTypeArguments(
      assembler, hi, type_class, tp, ta, kClassIdReg, kInstanceReg,
      kInstanceTypeArguments);
}

void TypeTestingStubGenerator::BuildOptimizedTypeArgumentValueCheck(
    Assembler* assembler,
    HierarchyInfo* hi,
    const AbstractType& type_arg,
    intptr_t type_param_value_offset_i,
    Label* check_failed) {
  const Register kInstanceTypeArguments = RSI;
  const Register kInstantiatorTypeArgumentsReg = RDX;
  const Register kFunctionTypeArgumentsReg = RCX;

  const Register kClassIdReg = TMP;
  const Register kOwnTypeArgumentValue = RDI;

  BuildOptimizedTypeArgumentValueCheck(
      assembler, hi, type_arg, type_param_value_offset_i, kClassIdReg,
      kInstanceTypeArguments, kInstantiatorTypeArgumentsReg,
      kFunctionTypeArgumentsReg, kOwnTypeArgumentValue, check_failed);
}

}  // namespace dart

#endif  // defined(TARGET_ARCH_X64) && !defined(DART_PRECOMPILED_RUNTIME)