Thu, 24 May 2018 18:41:44 +0800
Merge
1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2014 SAP AG. 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 */
26 #ifndef CPU_PPC_VM_VM_VERSION_PPC_HPP
27 #define CPU_PPC_VM_VM_VERSION_PPC_HPP
29 #include "runtime/globals_extension.hpp"
30 #include "runtime/vm_version.hpp"
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 dcba,
45 vcipher,
46 num_features // last entry to count features
47 };
48 enum Feature_Flag_Set {
49 unknown_m = 0,
50 fsqrt_m = (1 << fsqrt ),
51 fsqrts_m = (1 << fsqrts ),
52 isel_m = (1 << isel ),
53 lxarxeh_m = (1 << lxarxeh),
54 cmpb_m = (1 << cmpb ),
55 popcntb_m = (1 << popcntb),
56 popcntw_m = (1 << popcntw),
57 fcfids_m = (1 << fcfids ),
58 vand_m = (1 << vand ),
59 dcba_m = (1 << dcba ),
60 vcipher_m = (1 << vcipher),
61 all_features_m = -1
62 };
63 static int _features;
64 static int _measured_cache_line_size;
65 static const char* _features_str;
66 static bool _is_determine_features_test_running;
68 static void print_features();
69 static void determine_features(); // also measures cache line size
70 static void determine_section_size();
71 static void power6_micro_bench();
72 public:
73 // Initialization
74 static void initialize();
76 static bool is_determine_features_test_running() { return _is_determine_features_test_running; }
77 // CPU instruction support
78 static bool has_fsqrt() { return (_features & fsqrt_m) != 0; }
79 static bool has_fsqrts() { return (_features & fsqrts_m) != 0; }
80 static bool has_isel() { return (_features & isel_m) != 0; }
81 static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; }
82 static bool has_cmpb() { return (_features & cmpb_m) != 0; }
83 static bool has_popcntb() { return (_features & popcntb_m) != 0; }
84 static bool has_popcntw() { return (_features & popcntw_m) != 0; }
85 static bool has_fcfids() { return (_features & fcfids_m) != 0; }
86 static bool has_vand() { return (_features & vand_m) != 0; }
87 static bool has_dcba() { return (_features & dcba_m) != 0; }
88 static bool has_vcipher() { return (_features & vcipher_m) != 0; }
90 static const char* cpu_features() { return _features_str; }
92 static int get_cache_line_size() { return _measured_cache_line_size; }
94 // Assembler testing
95 static void allow_all();
96 static void revert();
97 };
99 #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP