16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef CPU_X86_VM_STUBROUTINES_X86_64_HPP
  26 #define CPU_X86_VM_STUBROUTINES_X86_64_HPP
  27 
  28 // This file holds the platform specific parts of the StubRoutines
  29 // definition. See stubRoutines.hpp for a description on how to
  30 // extend it.
  31 
  32 static bool    returns_to_call_stub(address return_pc)   { return return_pc == _call_stub_return_address; }
  33 
  34 enum platform_dependent_constants {
  35   code_size1 = 19000,          // simply increase if too small (assembler will crash if too small)
  36   code_size2 = 23000           // simply increase if too small (assembler will crash if too small)
  37 };
  38 
  39 class x86 {
  40  friend class StubGenerator;
  41 
  42  private:
  43   static address _get_previous_fp_entry;
  44   static address _get_previous_sp_entry;
  45 
  46   static address _f2i_fixup;
  47   static address _f2l_fixup;
  48   static address _d2i_fixup;
  49   static address _d2l_fixup;
  50 
  51   static address _float_sign_mask;
  52   static address _float_sign_flip;
  53   static address _double_sign_mask;
  54   static address _double_sign_flip;
  55 
  56  public:

  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef CPU_X86_VM_STUBROUTINES_X86_64_HPP
  26 #define CPU_X86_VM_STUBROUTINES_X86_64_HPP
  27 
  28 // This file holds the platform specific parts of the StubRoutines
  29 // definition. See stubRoutines.hpp for a description on how to
  30 // extend it.
  31 
  32 static bool    returns_to_call_stub(address return_pc)   { return return_pc == _call_stub_return_address; }
  33 
  34 enum platform_dependent_constants {
  35   code_size1 = 19000,          // simply increase if too small (assembler will crash if too small)
  36   code_size2 = 24000           // simply increase if too small (assembler will crash if too small)
  37 };
  38 
  39 class x86 {
  40  friend class StubGenerator;
  41 
  42  private:
  43   static address _get_previous_fp_entry;
  44   static address _get_previous_sp_entry;
  45 
  46   static address _f2i_fixup;
  47   static address _f2l_fixup;
  48   static address _d2i_fixup;
  49   static address _d2l_fixup;
  50 
  51   static address _float_sign_mask;
  52   static address _float_sign_flip;
  53   static address _double_sign_mask;
  54   static address _double_sign_flip;
  55 
  56  public: