1 /* 2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2012, 2015 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 */ 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 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 static int _features; 68 static int _measured_cache_line_size; 69 static const char* _features_str; 70 static bool _is_determine_features_test_running; 71 72 static void print_features(); 73 static void determine_features(); // also measures cache line size 74 static void config_dscr(); // Power 8: Configure Data Stream Control Register. 75 static void determine_section_size(); 76 static void power6_micro_bench(); 77 public: 78 // Initialization 79 static void initialize(); 80 81 // Override Abstract_VM_Version implementation 82 static bool use_biased_locking(); 83 84 static bool is_determine_features_test_running() { return _is_determine_features_test_running; } 85 // CPU instruction support 86 static bool has_fsqrt() { return (_features & fsqrt_m) != 0; } 87 static bool has_fsqrts() { return (_features & fsqrts_m) != 0; } 88 static bool has_isel() { return (_features & isel_m) != 0; } 89 static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; } 90 static bool has_cmpb() { return (_features & cmpb_m) != 0; } 91 static bool has_popcntb() { return (_features & popcntb_m) != 0; } 92 static bool has_popcntw() { return (_features & popcntw_m) != 0; } 93 static bool has_fcfids() { return (_features & fcfids_m) != 0; } 94 static bool has_vand() { return (_features & vand_m) != 0; } 95 static bool has_lqarx() { return (_features & lqarx_m) != 0; } 96 static bool has_vcipher() { return (_features & vcipher_m) != 0; } 97 static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; } 98 static bool has_tcheck() { return (_features & tcheck_m) != 0; } 99 100 static const char* cpu_features() { return _features_str; } 101 102 static int get_cache_line_size() { return _measured_cache_line_size; } 103 104 // Assembler testing 105 static void allow_all(); 106 static void revert(); 107 }; 108 109 #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP