src/cpu/ppc/vm/globalDefinitions_ppc.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().


  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP
  27 #define CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP
  28 
  29 // Size of PPC Instructions
  30 const int BytesPerInstWord = 4;
  31 
  32 const int StackAlignmentInBytes  = 16;
  33 






  34 #endif // CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP



  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP
  27 #define CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP
  28 
  29 // Size of PPC Instructions
  30 const int BytesPerInstWord = 4;
  31 
  32 const int StackAlignmentInBytes = 16;
  33 
  34 // Indicates whether the C calling conventions require that
  35 // 32-bit integer argument values are properly extended to 64 bits.
  36 // If set, SharedRuntime::c_calling_convention() must adapt
  37 // signatures accordingly.
  38 const bool CCallingConventionRequiresIntsAsLongs = true;
  39 
  40 #endif // CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP