1 /* 2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2012, 2018 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 lqarx, 46 vcipher, 47 vpmsumb, 48 mfdscr, 49 vsx, 50 vshasig, 51 num_features // last entry to count features 52 }; 53 enum Feature_Flag_Set { 54 unknown_m = 0, 55 fsqrt_m = (1 << fsqrt ), 56 fsqrts_m = (1 << fsqrts ), 57 isel_m = (1 << isel ), 58 lxarxeh_m = (1 << lxarxeh), 59 cmpb_m = (1 << cmpb ), 60 popcntb_m = (1 << popcntb), 61 popcntw_m = (1 << popcntw), 62 fcfids_m = (1 << fcfids ), 63 vand_m = (1 << vand ), 64 dcba_m = (1 << dcba ), 65 lqarx_m = (1 << lqarx ), 66 vcipher_m = (1 << vcipher), 67 vshasig_m = (1 << vshasig), 68 vpmsumb_m = (1 << vpmsumb), 69 mfdscr_m = (1 << mfdscr ), 70 vsx_m = (1 << vsx ), 71 all_features_m = -1 72 }; 73 static int _features; 74 static int _measured_cache_line_size; 75 static const char* _features_str; 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 static bool is_determine_features_test_running() { return _is_determine_features_test_running; } 88 // CPU instruction support 89 static bool has_fsqrt() { return (_features & fsqrt_m) != 0; } 90 static bool has_fsqrts() { return (_features & fsqrts_m) != 0; } 91 static bool has_isel() { return (_features & isel_m) != 0; } 92 static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; } 93 static bool has_cmpb() { return (_features & cmpb_m) != 0; } 94 static bool has_popcntb() { return (_features & popcntb_m) != 0; } 95 static bool has_popcntw() { return (_features & popcntw_m) != 0; } 96 static bool has_fcfids() { return (_features & fcfids_m) != 0; } 97 static bool has_vand() { return (_features & vand_m) != 0; } 98 static bool has_dcba() { return (_features & dcba_m) != 0; } 99 static bool has_lqarx() { return (_features & lqarx_m) != 0; } 100 static bool has_vcipher() { return (_features & vcipher_m) != 0; } 101 static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; } 102 static bool has_mfdscr() { return (_features & mfdscr_m) != 0; } 103 static bool has_vsx() { return (_features & vsx_m) != 0; } 104 static bool has_vshasig() { return (_features & vshasig_m) != 0; } 105 106 static const char* cpu_features() { return _features_str; } 107 108 static int get_cache_line_size() { return _measured_cache_line_size; } 109 110 // Assembler testing 111 static void allow_all(); 112 static void revert(); 113 114 // POWER 8: DSCR current value. 115 static uint64_t _dscr_val; 116 }; 117 118 #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP