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 */ 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 dcba, 45 num_features // last entry to count features 46 }; 47 enum Feature_Flag_Set { 48 unknown_m = 0, 49 fsqrt_m = (1 << fsqrt ), 50 fsqrts_m = (1 << fsqrts ), 51 isel_m = (1 << isel ), 52 lxarxeh_m = (1 << lxarxeh), 53 cmpb_m = (1 << cmpb ), 54 popcntb_m = (1 << popcntb), 55 popcntw_m = (1 << popcntw), 56 fcfids_m = (1 << fcfids ), 57 vand_m = (1 << vand ), 58 dcba_m = (1 << dcba ), 59 all_features_m = -1 60 }; 61 static int _features; 62 static int _measured_cache_line_size; 63 static const char* _features_str; 64 static bool _is_determine_features_test_running; 65 66 static void print_features(); 67 static void determine_features(); // also measures cache line size 68 static void determine_section_size(); 69 static void power6_micro_bench(); 70 public: 71 // Initialization 72 static void initialize(); 73 74 static bool is_determine_features_test_running() { return _is_determine_features_test_running; } 75 // CPU instruction support 76 static bool has_fsqrt() { return (_features & fsqrt_m) != 0; } 77 static bool has_fsqrts() { return (_features & fsqrts_m) != 0; } 78 static bool has_isel() { return (_features & isel_m) != 0; } 79 static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; } 80 static bool has_cmpb() { return (_features & cmpb_m) != 0; } 81 static bool has_popcntb() { return (_features & popcntb_m) != 0; } 82 static bool has_popcntw() { return (_features & popcntw_m) != 0; } 83 static bool has_fcfids() { return (_features & fcfids_m) != 0; } 84 static bool has_vand() { return (_features & vand_m) != 0; } 85 static bool has_dcba() { return (_features & dcba_m) != 0; } 86 87 static const char* cpu_features() { return _features_str; } 88 89 static int get_cache_line_size() { return _measured_cache_line_size; } 90 91 // Assembler testing 92 static void allow_all(); 93 static void revert(); 94 }; 95 96 #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP