src/hotspot/cpu/x86/globalDefinitions_x86.hpp

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#ifndef CPU_X86_GLOBALDEFINITIONS_X86_HPP
#define CPU_X86_GLOBALDEFINITIONS_X86_HPP

const int StackAlignmentInBytes  = 16;
const size_t pd_segfault_address = 1024;

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

#define SUPPORTS_NATIVE_CX8

#define SUPPORT_MONITOR_COUNT

#define CPU_MULTI_COPY_ATOMIC

// The expected size in bytes of a cache line.
#define DEFAULT_CACHE_LINE_SIZE 64

// The default padding size for data structures to avoid false sharing.
// The common wisdom is that adjacent cache line prefetchers on some hardware
// may pull two cache lines on access, so we have to pessimistically assume twice
// the cache line size for padding. TODO: Check if this is still true for modern
// hardware. If not, DEFAULT_CACHE_LINE_SIZE might as well suffice.
#define DEFAULT_PADDING_SIZE (DEFAULT_CACHE_LINE_SIZE*2)

#if defined(LINUX) || defined(__APPLE__)
#define SUPPORT_RESERVED_STACK_AREA
#endif

#define USE_POINTERS_TO_REGISTER_IMPL_ARRAY

#endif // CPU_X86_GLOBALDEFINITIONS_X86_HPP