1 /* 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef CPU_SPARC_VM_VM_VERSION_SPARC_HPP 26 #define CPU_SPARC_VM_VM_VERSION_SPARC_HPP 27 28 #include "runtime/globals_extension.hpp" 29 #include "runtime/vm_version.hpp" 30 31 class VM_Version: public Abstract_VM_Version { 32 protected: 33 enum Feature_Flag { 34 v8_instructions = 0, 35 hardware_mul32 = 1, 36 hardware_div32 = 2, 37 hardware_fsmuld = 3, 38 hardware_popc = 4, 39 v9_instructions = 5, 40 vis1_instructions = 6, 41 vis2_instructions = 7, 42 sun4v_instructions = 8, 43 blk_init_instructions = 9, 44 fmaf_instructions = 10, 45 fmau_instructions = 11, 46 vis3_instructions = 12, 47 cbcond_instructions = 13, 48 sparc64_family = 14, 49 M_family = 15, 50 T_family = 16, 51 T1_model = 17, 52 sparc5_instructions = 18, 53 aes_instructions = 19, 54 sha1_instruction = 20, 55 sha256_instruction = 21, 56 sha512_instruction = 22 57 }; 58 59 enum Feature_Flag_Set { 60 unknown_m = 0, 61 all_features_m = -1, 62 63 v8_instructions_m = 1 << v8_instructions, 64 hardware_mul32_m = 1 << hardware_mul32, 65 hardware_div32_m = 1 << hardware_div32, 66 hardware_fsmuld_m = 1 << hardware_fsmuld, 67 hardware_popc_m = 1 << hardware_popc, 68 v9_instructions_m = 1 << v9_instructions, 69 vis1_instructions_m = 1 << vis1_instructions, 70 vis2_instructions_m = 1 << vis2_instructions, 71 sun4v_m = 1 << sun4v_instructions, 72 blk_init_instructions_m = 1 << blk_init_instructions, 73 fmaf_instructions_m = 1 << fmaf_instructions, 74 fmau_instructions_m = 1 << fmau_instructions, 75 vis3_instructions_m = 1 << vis3_instructions, 76 cbcond_instructions_m = 1 << cbcond_instructions, 77 sparc64_family_m = 1 << sparc64_family, 78 M_family_m = 1 << M_family, 79 T_family_m = 1 << T_family, 80 T1_model_m = 1 << T1_model, 81 sparc5_instructions_m = 1 << sparc5_instructions, 82 aes_instructions_m = 1 << aes_instructions, 83 sha1_instruction_m = 1 << sha1_instruction, 84 sha256_instruction_m = 1 << sha256_instruction, 85 sha512_instruction_m = 1 << sha512_instruction, 86 87 generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m, 88 generic_v9_m = generic_v8_m | v9_instructions_m, 89 ultra3_m = generic_v9_m | vis1_instructions_m | vis2_instructions_m, 90 91 // Temporary until we have something more accurate 92 niagara1_unique_m = sun4v_m, 93 niagara1_m = generic_v9_m | niagara1_unique_m 94 }; 95 96 static int _features; 97 static const char* _features_str; 98 99 static unsigned int _L2_data_cache_line_size; 100 static unsigned int L2_data_cache_line_size() { return _L2_data_cache_line_size; } 101 102 static void print_features(); 103 static int determine_features(); 104 static int platform_features(int features); 105 106 // Returns true if the platform is in the niagara line (T series) 107 static bool is_M_family(int features) { return (features & M_family_m) != 0; } 108 static bool is_T_family(int features) { return (features & T_family_m) != 0; } 109 static bool is_niagara() { return is_T_family(_features); } 110 #ifdef ASSERT 111 static bool is_niagara(int features) { 112 // 'sun4v_m' may be defined on both Sun/Oracle Sparc CPUs as well as 113 // on Fujitsu Sparc64 CPUs, but only Sun/Oracle Sparcs can be 'niagaras'. 114 return (features & sun4v_m) != 0 && (features & sparc64_family_m) == 0; 115 } 116 #endif 117 118 // Returns true if it is niagara1 (T1). 119 static bool is_T1_model(int features) { return is_T_family(features) && ((features & T1_model_m) != 0); } 120 121 static int maximum_niagara1_processor_count() { return 32; } 122 123 public: 124 // Initialization 125 static void initialize(); 126 127 // Instruction support 128 static bool has_v8() { return (_features & v8_instructions_m) != 0; } 129 static bool has_v9() { return (_features & v9_instructions_m) != 0; } 130 static bool has_hardware_mul32() { return (_features & hardware_mul32_m) != 0; } 131 static bool has_hardware_div32() { return (_features & hardware_div32_m) != 0; } 132 static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; } 133 static bool has_hardware_popc() { return (_features & hardware_popc_m) != 0; } 134 static bool has_vis1() { return (_features & vis1_instructions_m) != 0; } 135 static bool has_vis2() { return (_features & vis2_instructions_m) != 0; } 136 static bool has_vis3() { return (_features & vis3_instructions_m) != 0; } 137 static bool has_blk_init() { return (_features & blk_init_instructions_m) != 0; } 138 static bool has_cbcond() { return (_features & cbcond_instructions_m) != 0; } 139 static bool has_sparc5_instr() { return (_features & sparc5_instructions_m) != 0; } 140 static bool has_aes() { return (_features & aes_instructions_m) != 0; } 141 static bool has_sha1() { return (_features & sha1_instruction_m) != 0; } 142 static bool has_sha256() { return (_features & sha256_instruction_m) != 0; } 143 static bool has_sha512() { return (_features & sha512_instruction_m) != 0; } 144 145 static bool supports_compare_and_exchange() 146 { return has_v9(); } 147 148 // Returns true if the platform is in the niagara line (T series) 149 // and newer than the niagara1. 150 static bool is_niagara_plus() { return is_T_family(_features) && !is_T1_model(_features); } 151 152 static bool is_M_series() { return is_M_family(_features); } 153 static bool is_T4() { return is_T_family(_features) && has_cbcond(); } 154 static bool is_T7() { return is_T_family(_features) && has_sparc5_instr(); } 155 156 // Fujitsu SPARC64 157 static bool is_sparc64() { return (_features & sparc64_family_m) != 0; } 158 159 static bool is_sun4v() { return (_features & sun4v_m) != 0; } 160 static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m && !is_sun4v() && !is_sparc64(); } 161 162 static bool has_fast_fxtof() { return is_niagara() || is_sparc64() || has_v9() && !is_ultra3(); } 163 static bool has_fast_idiv() { return is_niagara_plus() || is_sparc64(); } 164 165 // T4 and newer Sparc have fast RDPC instruction. 166 static bool has_fast_rdpc() { return is_T4(); } 167 168 // On T4 and newer Sparc BIS to the beginning of cache line always zeros it. 169 static bool has_block_zeroing() { return has_blk_init() && is_T4(); } 170 171 static const char* cpu_features() { return _features_str; } 172 173 // default prefetch block size on sparc 174 static intx prefetch_data_size() { return L2_data_cache_line_size(); } 175 176 // Prefetch 177 static intx prefetch_copy_interval_in_bytes() { 178 intx interval = PrefetchCopyIntervalInBytes; 179 return interval >= 0 ? interval : (has_v9() ? 512 : 0); 180 } 181 static intx prefetch_scan_interval_in_bytes() { 182 intx interval = PrefetchScanIntervalInBytes; 183 return interval >= 0 ? interval : (has_v9() ? 512 : 0); 184 } 185 static intx prefetch_fields_ahead() { 186 intx count = PrefetchFieldsAhead; 187 return count >= 0 ? count : (is_ultra3() ? 1 : 0); 188 } 189 190 static intx allocate_prefetch_distance() { 191 // This method should be called before allocate_prefetch_style(). 192 intx count = AllocatePrefetchDistance; 193 if (count < 0) { // default is not defined ? 194 count = 512; 195 } 196 return count; 197 } 198 static intx allocate_prefetch_style() { 199 assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive"); 200 // Return 0 if AllocatePrefetchDistance was not defined. 201 return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0; 202 } 203 204 // Assembler testing 205 static void allow_all(); 206 static void revert(); 207 208 // Override the Abstract_VM_Version implementation. 209 static uint page_size_count() { return is_sun4v() ? 4 : 2; } 210 211 // Calculates the number of parallel threads 212 static unsigned int calc_parallel_worker_threads(); 213 }; 214 215 #endif // CPU_SPARC_VM_VM_VERSION_SPARC_HPP