1 /*
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25 
26 #ifndef CPU_PPC_GLOBALDEFINITIONS_PPC_HPP
27 #define CPU_PPC_GLOBALDEFINITIONS_PPC_HPP
28 
29 // Size of PPC Instructions
30 const int BytesPerInstWord = 4;
31 
32 const int StackAlignmentInBytes = 16;
33 
34 // Indicates whether the C calling conventions require that
35 // 32-bit integer argument values are extended to 64 bits.
36 const bool CCallingConventionRequiresIntsAsLongs = true;
37 
38 #define SUPPORTS_NATIVE_CX8
39 
40 #define SUPPORT_MONITOR_COUNT
41 
42 // PPC64 is not specified as multi-copy-atomic
43 // So we must not #define CPU_MULTI_COPY_ATOMIC
44 
45 // The expected size in bytes of a cache line, used to pad data structures.
46 #define DEFAULT_CACHE_LINE_SIZE 128
47 
48 #if defined(COMPILER2) && (defined(AIX) || defined(LINUX))
49 // Include Transactional Memory lock eliding optimization
50 #define INCLUDE_RTM_OPT 1
51 #else
52 #define INCLUDE_RTM_OPT 0
53 #endif
54 
55 #define SUPPORT_RESERVED_STACK_AREA
56 
57 // If UseSIGTRAP is active, we only use the poll bit and no polling page.
58 // Otherwise, we fall back to usage of the polling page in nmethods.
59 // Define the condition to use this -XX flag.
60 #define USE_POLL_BIT_ONLY UseSIGTRAP
61 
62 #endif // CPU_PPC_GLOBALDEFINITIONS_PPC_HPP