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annotate src/cpu/sparc/vm/vm_version_sparc.hpp @ 19083:09292c24d555
LSStackSlotAllocator: hide inner class.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Sat, 31 Jan 2015 11:07:15 +0100 |
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0 | 1 /* |
17524 | 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
0 | 31 class VM_Version: public Abstract_VM_Version { |
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32 friend class VMStructs; |
0 | 33 protected: |
34 enum Feature_Flag { | |
3839 | 35 v8_instructions = 0, |
36 hardware_mul32 = 1, | |
37 hardware_div32 = 2, | |
38 hardware_fsmuld = 3, | |
39 hardware_popc = 4, | |
40 v9_instructions = 5, | |
41 vis1_instructions = 6, | |
42 vis2_instructions = 7, | |
43 sun4v_instructions = 8, | |
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44 blk_init_instructions = 9, |
3839 | 45 fmaf_instructions = 10, |
46 fmau_instructions = 11, | |
47 vis3_instructions = 12, | |
6269 | 48 cbcond_instructions = 13, |
49 sparc64_family = 14, | |
50 M_family = 15, | |
51 T_family = 16, | |
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52 T1_model = 17, |
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53 sparc5_instructions = 18, |
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54 aes_instructions = 19 |
0 | 55 }; |
56 | |
57 enum Feature_Flag_Set { | |
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58 unknown_m = 0, |
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59 all_features_m = -1, |
0 | 60 |
3839 | 61 v8_instructions_m = 1 << v8_instructions, |
62 hardware_mul32_m = 1 << hardware_mul32, | |
63 hardware_div32_m = 1 << hardware_div32, | |
64 hardware_fsmuld_m = 1 << hardware_fsmuld, | |
65 hardware_popc_m = 1 << hardware_popc, | |
66 v9_instructions_m = 1 << v9_instructions, | |
67 vis1_instructions_m = 1 << vis1_instructions, | |
68 vis2_instructions_m = 1 << vis2_instructions, | |
69 sun4v_m = 1 << sun4v_instructions, | |
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70 blk_init_instructions_m = 1 << blk_init_instructions, |
3839 | 71 fmaf_instructions_m = 1 << fmaf_instructions, |
72 fmau_instructions_m = 1 << fmau_instructions, | |
73 vis3_instructions_m = 1 << vis3_instructions, | |
6269 | 74 cbcond_instructions_m = 1 << cbcond_instructions, |
3839 | 75 sparc64_family_m = 1 << sparc64_family, |
6269 | 76 M_family_m = 1 << M_family, |
3839 | 77 T_family_m = 1 << T_family, |
78 T1_model_m = 1 << T1_model, | |
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79 sparc5_instructions_m = 1 << sparc5_instructions, |
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80 aes_instructions_m = 1 << aes_instructions, |
0 | 81 |
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82 generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m, |
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83 generic_v9_m = generic_v8_m | v9_instructions_m, |
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84 ultra3_m = generic_v9_m | vis1_instructions_m | vis2_instructions_m, |
0 | 85 |
86 // Temporary until we have something more accurate | |
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87 niagara1_unique_m = sun4v_m, |
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88 niagara1_m = generic_v9_m | niagara1_unique_m |
0 | 89 }; |
90 | |
91 static int _features; | |
92 static const char* _features_str; | |
93 | |
94 static void print_features(); | |
95 static int determine_features(); | |
96 static int platform_features(int features); | |
97 | |
2080 | 98 // Returns true if the platform is in the niagara line (T series) |
6269 | 99 static bool is_M_family(int features) { return (features & M_family_m) != 0; } |
2080 | 100 static bool is_T_family(int features) { return (features & T_family_m) != 0; } |
101 static bool is_niagara() { return is_T_family(_features); } | |
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102 #ifdef ASSERT |
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103 static bool is_niagara(int features) { |
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104 // 'sun4v_m' may be defined on both Sun/Oracle Sparc CPUs as well as |
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105 // on Fujitsu Sparc64 CPUs, but only Sun/Oracle Sparcs can be 'niagaras'. |
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106 return (features & sun4v_m) != 0 && (features & sparc64_family_m) == 0; |
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107 } |
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108 #endif |
2080 | 109 |
110 // Returns true if it is niagara1 (T1). | |
111 static bool is_T1_model(int features) { return is_T_family(features) && ((features & T1_model_m) != 0); } | |
0 | 112 |
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113 static int maximum_niagara1_processor_count() { return 32; } |
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114 |
0 | 115 public: |
116 // Initialization | |
117 static void initialize(); | |
118 | |
119 // Instruction support | |
120 static bool has_v8() { return (_features & v8_instructions_m) != 0; } | |
121 static bool has_v9() { return (_features & v9_instructions_m) != 0; } | |
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122 static bool has_hardware_mul32() { return (_features & hardware_mul32_m) != 0; } |
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123 static bool has_hardware_div32() { return (_features & hardware_div32_m) != 0; } |
0 | 124 static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; } |
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125 static bool has_hardware_popc() { return (_features & hardware_popc_m) != 0; } |
0 | 126 static bool has_vis1() { return (_features & vis1_instructions_m) != 0; } |
127 static bool has_vis2() { return (_features & vis2_instructions_m) != 0; } | |
2080 | 128 static bool has_vis3() { return (_features & vis3_instructions_m) != 0; } |
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129 static bool has_blk_init() { return (_features & blk_init_instructions_m) != 0; } |
3839 | 130 static bool has_cbcond() { return (_features & cbcond_instructions_m) != 0; } |
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131 static bool has_sparc5_instr() { return (_features & sparc5_instructions_m) != 0; } |
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132 static bool has_aes() { return (_features & aes_instructions_m) != 0; } |
0 | 133 |
134 static bool supports_compare_and_exchange() | |
135 { return has_v9(); } | |
136 | |
2080 | 137 // Returns true if the platform is in the niagara line (T series) |
138 // and newer than the niagara1. | |
139 static bool is_niagara_plus() { return is_T_family(_features) && !is_T1_model(_features); } | |
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140 |
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141 static bool is_M_series() { return is_M_family(_features); } |
3854 | 142 static bool is_T4() { return is_T_family(_features) && has_cbcond(); } |
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143 static bool is_T7() { return is_T_family(_features) && has_sparc5_instr(); } |
3839 | 144 |
2080 | 145 // Fujitsu SPARC64 |
146 static bool is_sparc64() { return (_features & sparc64_family_m) != 0; } | |
0 | 147 |
3839 | 148 static bool is_sun4v() { return (_features & sun4v_m) != 0; } |
149 static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m && !is_sun4v() && !is_sparc64(); } | |
150 | |
2080 | 151 static bool has_fast_fxtof() { return is_niagara() || is_sparc64() || has_v9() && !is_ultra3(); } |
152 static bool has_fast_idiv() { return is_niagara_plus() || is_sparc64(); } | |
3854 | 153 |
3839 | 154 // T4 and newer Sparc have fast RDPC instruction. |
3854 | 155 static bool has_fast_rdpc() { return is_T4(); } |
156 | |
3892 | 157 // On T4 and newer Sparc BIS to the beginning of cache line always zeros it. |
158 static bool has_block_zeroing() { return has_blk_init() && is_T4(); } | |
0 | 159 |
160 static const char* cpu_features() { return _features_str; } | |
161 | |
3854 | 162 static intx prefetch_data_size() { |
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163 return is_T4() && !is_T7() ? 32 : 64; // default prefetch block size on sparc |
0 | 164 } |
165 | |
166 // Prefetch | |
167 static intx prefetch_copy_interval_in_bytes() { | |
168 intx interval = PrefetchCopyIntervalInBytes; | |
169 return interval >= 0 ? interval : (has_v9() ? 512 : 0); | |
170 } | |
171 static intx prefetch_scan_interval_in_bytes() { | |
172 intx interval = PrefetchScanIntervalInBytes; | |
173 return interval >= 0 ? interval : (has_v9() ? 512 : 0); | |
174 } | |
175 static intx prefetch_fields_ahead() { | |
176 intx count = PrefetchFieldsAhead; | |
177 return count >= 0 ? count : (is_ultra3() ? 1 : 0); | |
178 } | |
179 | |
180 static intx allocate_prefetch_distance() { | |
181 // This method should be called before allocate_prefetch_style(). | |
182 intx count = AllocatePrefetchDistance; | |
183 if (count < 0) { // default is not defined ? | |
184 count = 512; | |
185 } | |
186 return count; | |
187 } | |
188 static intx allocate_prefetch_style() { | |
189 assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive"); | |
190 // Return 0 if AllocatePrefetchDistance was not defined. | |
191 return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0; | |
192 } | |
193 | |
194 // Assembler testing | |
195 static void allow_all(); | |
196 static void revert(); | |
197 | |
198 // Override the Abstract_VM_Version implementation. | |
199 static uint page_size_count() { return is_sun4v() ? 4 : 2; } | |
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200 |
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201 // Calculates the number of parallel threads |
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202 static unsigned int calc_parallel_worker_threads(); |
0 | 203 }; |
1972 | 204 |
205 #endif // CPU_SPARC_VM_VM_VERSION_SPARC_HPP |