src/cpu/x86/vm/globalDefinitions_x86.hpp

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rev 5190 : 8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
Summary: Some platforms, as ppc and s390x/zArch require that 32-bit ints are passed as 64-bit values to C functions. This change adds support to adapt the signature and to issue proper casts to c2-compiled stubs. The functions are used in generate_native_wrapper(). Adapt signature used by the compiler as in PhaseIdealLoop::intrinsify_fill().


  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
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  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
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  24 
  25 #ifndef CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP
  26 #define CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP
  27 
  28 const int StackAlignmentInBytes  = 16;
  29 






  30 #define SUPPORTS_NATIVE_CX8
  31 
  32 #endif // CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP



  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  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_GLOBALDEFINITIONS_X86_HPP
  26 #define CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP
  27 
  28 const int StackAlignmentInBytes  = 16;
  29 
  30 // Indicates whether the C calling conventions require that
  31 // 32-bit integer argument values are properly extended to 64 bits.
  32 // If set, SharedRuntime::c_calling_convention() must adapt
  33 // signatures accordingly.
  34 const bool CCallingConventionRequiresIntsAsLongs = false;
  35 
  36 #define SUPPORTS_NATIVE_CX8
  37 
  38 #endif // CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP