hotspot/src/cpu/x86/vm/globalDefinitions_x86.hpp
author goetz
Mon, 29 Jun 2015 15:30:55 +0200
changeset 31590 427d073af867
parent 30221 70dab4a0cd45
child 35071 a0910b1d3e0d
child 35112 b3c4347bb751
permissions -rw-r--r--
8086069: Adapt runtime calls to recent intrinsics to pass ints as long Summary: Remove CCallingConventionRequiresIntsAsLongs from shared code and push functionality to native wrapper. Less optimal but more flexible. Reviewed-by: jrose, kvn

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#ifndef CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP
#define CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP

const int StackAlignmentInBytes  = 16;

#define SUPPORTS_NATIVE_CX8

// The expected size in bytes of a cache line, used to pad data structures.
#if defined(TIERED)
  #ifdef _LP64
    // tiered, 64-bit, large machine
    #define DEFAULT_CACHE_LINE_SIZE 128
  #else
    // tiered, 32-bit, medium machine
    #define DEFAULT_CACHE_LINE_SIZE 64
  #endif
#elif defined(COMPILER1)
  // pure C1, 32-bit, small machine
  // i486 was the last Intel chip with 16-byte cache line size
  #define DEFAULT_CACHE_LINE_SIZE 32
#elif defined(COMPILER2) || defined(SHARK)
  #ifdef _LP64
    // pure C2, 64-bit, large machine
    #define DEFAULT_CACHE_LINE_SIZE 128
  #else
    // pure C2, 32-bit, medium machine
    #define DEFAULT_CACHE_LINE_SIZE 64
  #endif
#endif

#if defined(COMPILER2) && !defined(JAVASE_EMBEDDED)
// Include Restricted Transactional Memory lock eliding optimization
#define INCLUDE_RTM_OPT 1
#endif

#endif // CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP