1 /*
2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012, 2017 SAP SE. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
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
32 class VM_Version: public Abstract_VM_Version {
33 protected:
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 mfdscr,
49 vsx,
50 ldbrx,
51 stdbrx,
52 num_features // last entry to count features
53 };
54 enum Feature_Flag_Set {
55 unknown_m = 0,
56 fsqrt_m = (1 << fsqrt ),
57 fsqrts_m = (1 << fsqrts ),
58 isel_m = (1 << isel ),
59 lxarxeh_m = (1 << lxarxeh),
60 cmpb_m = (1 << cmpb ),
61 popcntb_m = (1 << popcntb),
62 popcntw_m = (1 << popcntw),
63 fcfids_m = (1 << fcfids ),
64 vand_m = (1 << vand ),
65 lqarx_m = (1 << lqarx ),
66 vcipher_m = (1 << vcipher),
67 vpmsumb_m = (1 << vpmsumb),
68 tcheck_m = (1 << tcheck ),
69 mfdscr_m = (1 << mfdscr ),
70 vsx_m = (1 << vsx ),
71 ldbrx_m = (1 << ldbrx ),
72 stdbrx_m = (1 << stdbrx ),
73 all_features_m = (unsigned long)-1
74 };
75
76 static bool _is_determine_features_test_running;
77
78 static void print_features();
79 static void determine_features(); // also measures cache line size
80 static void config_dscr(); // Power 8: Configure Data Stream Control Register.
81 static void determine_section_size();
82 static void power6_micro_bench();
83 public:
84 // Initialization
85 static void initialize();
86
87 // Override Abstract_VM_Version implementation
88 static bool use_biased_locking();
89
90 static bool is_determine_features_test_running() { return _is_determine_features_test_running; }
91 // CPU instruction support
92 static bool has_fsqrt() { return (_features & fsqrt_m) != 0; }
93 static bool has_fsqrts() { return (_features & fsqrts_m) != 0; }
94 static bool has_isel() { return (_features & isel_m) != 0; }
95 static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; }
96 static bool has_cmpb() { return (_features & cmpb_m) != 0; }
97 static bool has_popcntb() { return (_features & popcntb_m) != 0; }
98 static bool has_popcntw() { return (_features & popcntw_m) != 0; }
99 static bool has_fcfids() { return (_features & fcfids_m) != 0; }
100 static bool has_vand() { return (_features & vand_m) != 0; }
101 static bool has_lqarx() { return (_features & lqarx_m) != 0; }
102 static bool has_vcipher() { return (_features & vcipher_m) != 0; }
103 static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; }
104 static bool has_tcheck() { return (_features & tcheck_m) != 0; }
105 static bool has_mfdscr() { return (_features & mfdscr_m) != 0; }
106 static bool has_vsx() { return (_features & vsx_m) != 0; }
107 static bool has_ldbrx() { return (_features & ldbrx_m) != 0; }
108 static bool has_stdbrx() { return (_features & stdbrx_m) != 0; }
109 static bool has_mtfprd() { return has_vpmsumb(); } // alias for P8
110
111 // Assembler testing
112 static void allow_all();
113 static void revert();
114
115 // POWER 8: DSCR current value.
116 static uint64_t _dscr_val;
117 };
118
119 #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP