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diff src/cpu/x86/vm/globalDefinitions_x86.hpp @ 14418:cfd05ec74089

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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(). Reviewed-by: kvn
author goetz
date Wed, 18 Sep 2013 14:34:56 -0700
parents 6b388e7d4905
children abec000618bf
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line diff
--- a/src/cpu/x86/vm/globalDefinitions_x86.hpp	Fri Sep 13 22:50:47 2013 +0200
+++ b/src/cpu/x86/vm/globalDefinitions_x86.hpp	Wed Sep 18 14:34:56 2013 -0700
@@ -27,6 +27,12 @@
 
 const int StackAlignmentInBytes  = 16;
 
+// Indicates whether the C calling conventions require that
+// 32-bit integer argument values are properly extended to 64 bits.
+// If set, SharedRuntime::c_calling_convention() must adapt
+// signatures accordingly.
+const bool CCallingConventionRequiresIntsAsLongs = false;
+
 #define SUPPORTS_NATIVE_CX8
 
 #endif // CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP