src/cpu/sparc/vm/globalDefinitions_sparc.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().


  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_SPARC_VM_GLOBALDEFINITIONS_SPARC_HPP
  26 #define CPU_SPARC_VM_GLOBALDEFINITIONS_SPARC_HPP
  27 
  28 // Size of Sparc Instructions
  29 const int BytesPerInstWord = 4;
  30 
  31 const int StackAlignmentInBytes = (2*wordSize);
  32 






  33 #define SUPPORTS_NATIVE_CX8
  34 
  35 #endif // CPU_SPARC_VM_GLOBALDEFINITIONS_SPARC_HPP



  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_SPARC_VM_GLOBALDEFINITIONS_SPARC_HPP
  26 #define CPU_SPARC_VM_GLOBALDEFINITIONS_SPARC_HPP
  27 
  28 // Size of Sparc Instructions
  29 const int BytesPerInstWord = 4;
  30 
  31 const int StackAlignmentInBytes = (2*wordSize);
  32 
  33 // Indicates whether the C calling conventions require that
  34 // 32-bit integer argument values are properly extended to 64 bits.
  35 // If set, SharedRuntime::c_calling_convention() must adapt
  36 // signatures accordingly.
  37 const bool CCallingConventionRequiresIntsAsLongs = false;
  38 
  39 #define SUPPORTS_NATIVE_CX8
  40 
  41 #endif // CPU_SPARC_VM_GLOBALDEFINITIONS_SPARC_HPP