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 #ifdef AIX
35 const size_t pd_segfault_address = -1;
36 #else
37 const size_t pd_segfault_address = 1024;
38 #endif
39 
40 // Indicates whether the C calling conventions require that
41 // 32-bit integer argument values are extended to 64 bits.
42 const bool CCallingConventionRequiresIntsAsLongs = true;
43 
44 #define SUPPORTS_NATIVE_CX8
45 
46 #define SUPPORT_MONITOR_COUNT
47 
48 // PPC64 is not specified as multi-copy-atomic
49 // So we must not #define CPU_MULTI_COPY_ATOMIC
50 
51 // The expected size in bytes of a cache line, used to pad data structures.
52 #define DEFAULT_CACHE_LINE_SIZE 128
53 
54 #if defined(COMPILER2) && (defined(AIX) || defined(LINUX))
55 // Include Transactional Memory lock eliding optimization
56 #define INCLUDE_RTM_OPT 1
57 #else
58 #define INCLUDE_RTM_OPT 0
59 #endif
60 
61 #define SUPPORT_RESERVED_STACK_AREA
62 
63 // If UseSIGTRAP is active, we only use the poll bit and no polling page.
64 // Otherwise, we fall back to usage of the polling page in nmethods.
65 // Define the condition to use this -XX flag.
66 #define USE_POLL_BIT_ONLY UseSIGTRAP
67 
68 #endif // CPU_PPC_GLOBALDEFINITIONS_PPC_HPP