vm_version_ppc.hpp revision 9814:22fd02fad88b 
1/*
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25
26#ifndef CPU_PPC_VM_VM_VERSION_PPC_HPP
27#define CPU_PPC_VM_VM_VERSION_PPC_HPP
28
29#include "runtime/globals_extension.hpp"
30#include "runtime/vm_version.hpp"
31
32class VM_Version: public Abstract_VM_Version {
33protected:
34  enum Feature_Flag {
35    fsqrt,
36    fsqrts,
37    isel,
38    lxarxeh,
39    cmpb,
40    popcntb,
41    popcntw,
42    fcfids,
43    vand,
44    lqarx,
45    vcipher,
46    vpmsumb,
47    tcheck,
48    num_features // last entry to count features
49  };
50  enum Feature_Flag_Set {
51    unknown_m             = 0,
52    fsqrt_m               = (1 << fsqrt  ),
53    fsqrts_m              = (1 << fsqrts ),
54    isel_m                = (1 << isel   ),
55    lxarxeh_m             = (1 << lxarxeh),
56    cmpb_m                = (1 << cmpb   ),
57    popcntb_m             = (1 << popcntb),
58    popcntw_m             = (1 << popcntw),
59    fcfids_m              = (1 << fcfids ),
60    vand_m                = (1 << vand   ),
61    lqarx_m               = (1 << lqarx  ),
62    vcipher_m             = (1 << vcipher),
63    vpmsumb_m             = (1 << vpmsumb),
64    tcheck_m              = (1 << tcheck ),
65    all_features_m        = -1
66  };
67
68  static bool _is_determine_features_test_running;
69
70  static void print_features();
71  static void determine_features(); // also measures cache line size
72  static void config_dscr(); // Power 8: Configure Data Stream Control Register.
73  static void determine_section_size();
74  static void power6_micro_bench();
75public:
76  // Initialization
77  static void initialize();
78
79  // Override Abstract_VM_Version implementation
80  static bool use_biased_locking();
81
82  static bool is_determine_features_test_running() { return _is_determine_features_test_running; }
83  // CPU instruction support
84  static bool has_fsqrt()   { return (_features & fsqrt_m) != 0; }
85  static bool has_fsqrts()  { return (_features & fsqrts_m) != 0; }
86  static bool has_isel()    { return (_features & isel_m) != 0; }
87  static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; }
88  static bool has_cmpb()    { return (_features & cmpb_m) != 0; }
89  static bool has_popcntb() { return (_features & popcntb_m) != 0; }
90  static bool has_popcntw() { return (_features & popcntw_m) != 0; }
91  static bool has_fcfids()  { return (_features & fcfids_m) != 0; }
92  static bool has_vand()    { return (_features & vand_m) != 0; }
93  static bool has_lqarx()   { return (_features & lqarx_m) != 0; }
94  static bool has_vcipher() { return (_features & vcipher_m) != 0; }
95  static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; }
96  static bool has_tcheck()  { return (_features & tcheck_m) != 0; }
97
98  // Assembler testing
99  static void allow_all();
100  static void revert();
101};
102
103#endif // CPU_PPC_VM_VM_VERSION_PPC_HPP
104