Wed, 27 Nov 2013 16:16:21 -0800
8029015: PPC64 (part 216): opto: trap based null and range checks
Summary: On PPC64 use tdi instruction that does a compare and raises SIGTRAP for NULL and range checks.
Reviewed-by: kvn
1 /*
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26 #ifndef CPU_PPC_VM_RELOCINFO_PPC_HPP
27 #define CPU_PPC_VM_RELOCINFO_PPC_HPP
29 // machine-dependent parts of class relocInfo
30 private:
31 enum {
32 // Since Power instructions are whole words,
33 // the two low-order offset bits can always be discarded.
34 offset_unit = 4,
36 // There is no need for format bits; the instructions are
37 // sufficiently self-identifying.
38 #ifndef _LP64
39 format_width = 0
40 #else
41 // Except narrow oops in 64-bits VM.
42 format_width = 1
43 #endif
44 };
46 #endif // CPU_PPC_VM_RELOCINFO_PPC_HPP