1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012, 2019 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_VERSION_PPC_HPP
27 #define CPU_PPC_VM_VERSION_PPC_HPP
28
29 #include "runtime/globals_extension.hpp"
30 #include "runtime/abstract_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 mfdscr,
48 vsx,
49 ldbrx,
50 stdbrx,
51 vshasig,
52 rtm,
53 darn,
54 num_features // last entry to count features
55 };
56 enum Feature_Flag_Set {
57 unknown_m = 0,
58 fsqrt_m = (1 << fsqrt ),
59 fsqrts_m = (1 << fsqrts ),
60 isel_m = (1 << isel ),
61 lxarxeh_m = (1 << lxarxeh),
62 cmpb_m = (1 << cmpb ),
63 popcntb_m = (1 << popcntb),
64 popcntw_m = (1 << popcntw),
65 fcfids_m = (1 << fcfids ),
66 vand_m = (1 << vand ),
67 lqarx_m = (1 << lqarx ),
68 vcipher_m = (1 << vcipher),
69 vpmsumb_m = (1 << vpmsumb),
70 mfdscr_m = (1 << mfdscr ),
71 vsx_m = (1 << vsx ),
72 ldbrx_m = (1 << ldbrx ),
73 stdbrx_m = (1 << stdbrx ),
74 vshasig_m = (1 << vshasig),
75 rtm_m = (1 << rtm ),
76 darn_m = (1 << darn ),
77 all_features_m = (unsigned long)-1
78 };
79
80 static bool _is_determine_features_test_running;
81
82 static void print_features();
83 static void determine_features(); // also measures cache line size
84 static void config_dscr(); // Power 8: Configure Data Stream Control Register.
85 static void determine_section_size();
86 static void power6_micro_bench();
87 public:
88 // Initialization
89 static void initialize();
90 static void check_virtualizations();
91
92 // Override Abstract_VM_Version implementation
93 static void print_platform_virtualization_info(outputStream*);
94
95 // Override Abstract_VM_Version implementation
96 static bool use_biased_locking();
97
98 // PPC64 supports fast class initialization checks for static methods.
99 static bool supports_fast_class_init_checks() { return true; }
100
101 static bool is_determine_features_test_running() { return _is_determine_features_test_running; }
102 // CPU instruction support
103 static bool has_fsqrt() { return (_features & fsqrt_m) != 0; }
104 static bool has_fsqrts() { return (_features & fsqrts_m) != 0; }
105 static bool has_isel() { return (_features & isel_m) != 0; }
106 static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; }
107 static bool has_cmpb() { return (_features & cmpb_m) != 0; }
108 static bool has_popcntb() { return (_features & popcntb_m) != 0; }
109 static bool has_popcntw() { return (_features & popcntw_m) != 0; }
110 static bool has_fcfids() { return (_features & fcfids_m) != 0; }
111 static bool has_vand() { return (_features & vand_m) != 0; }
112 static bool has_lqarx() { return (_features & lqarx_m) != 0; }
113 static bool has_vcipher() { return (_features & vcipher_m) != 0; }
114 static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; }
115 static bool has_mfdscr() { return (_features & mfdscr_m) != 0; }
116 static bool has_vsx() { return (_features & vsx_m) != 0; }
117 static bool has_ldbrx() { return (_features & ldbrx_m) != 0; }
118 static bool has_stdbrx() { return (_features & stdbrx_m) != 0; }
119 static bool has_vshasig() { return (_features & vshasig_m) != 0; }
120 static bool has_tm() { return (_features & rtm_m) != 0; }
121 static bool has_darn() { return (_features & darn_m) != 0; }
122
123 static bool has_mtfprd() { return has_vpmsumb(); } // alias for P8
124
125 // Assembler testing
126 static void allow_all();
127 static void revert();
128
129 // POWER 8: DSCR current value.
130 static uint64_t _dscr_val;
131 };
132
133 #endif // CPU_PPC_VM_VERSION_PPC_HPP