globalDefinitions_ppc.hpp

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#ifndef CPU_PPC_GLOBALDEFINITIONS_PPC_HPP
#define CPU_PPC_GLOBALDEFINITIONS_PPC_HPP

#ifndef FILE_AND_LINE
#define FILE_AND_LINE __FILE__ ":" XSTR(__LINE__)
#endif

// Size of PPC Instructions
const int BytesPerInstWord = 4;

const int StackAlignmentInBytes = 16;

// Indicates whether the C calling conventions require that
// 32-bit integer argument values are extended to 64 bits.
const bool CCallingConventionRequiresIntsAsLongs = true;

#define SUPPORTS_NATIVE_CX8

// PPC64 is not specified as multi-copy-atomic
// So we must not #define CPU_MULTI_COPY_ATOMIC

// The expected size in bytes of a cache line, used to pad data structures.
#define DEFAULT_CACHE_LINE_SIZE 128

#if defined(COMPILER2) && (defined(AIX) || defined(LINUX))
// Include Transactional Memory lock eliding optimization
#define INCLUDE_RTM_OPT 1
#else
#define INCLUDE_RTM_OPT 0
#endif

#define SUPPORT_RESERVED_STACK_AREA

// If UseSIGTRAP is active, we only use the poll bit and no polling page.
// Otherwise, we fall back to usage of the polling page in nmethods.
// Define the condition to use this -XX flag.
#define USE_POLL_BIT_ONLY UseSIGTRAP

#define COMPRESSED_CLASS_POINTERS_DEPENDS_ON_COMPRESSED_OOPS false

#endif // CPU_PPC_GLOBALDEFINITIONS_PPC_HPP