Mercurial > hg > truffle
annotate src/cpu/sparc/vm/vm_version_sparc.hpp @ 641:6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
Summary: A similar function to getisax(2) should be used to determine all possible instruction set extensions.
Reviewed-by: never, kvn
| author | twisti |
|---|---|
| date | Wed, 11 Mar 2009 14:16:13 -0700 |
| parents | d1605aabd0a1 |
| children | c771b7f43bbf |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 class VM_Version: public Abstract_VM_Version { | |
| 26 protected: | |
| 27 enum Feature_Flag { | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
28 v8_instructions = 0, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
29 hardware_mul32 = 1, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
30 hardware_div32 = 2, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
31 hardware_fsmuld = 3, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
32 v9_instructions = 4, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
33 vis1_instructions = 5, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
34 vis2_instructions = 6, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
35 sun4v_instructions = 7 |
| 0 | 36 }; |
| 37 | |
| 38 enum Feature_Flag_Set { | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
39 unknown_m = 0, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
40 all_features_m = -1, |
| 0 | 41 |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
42 v8_instructions_m = 1 << v8_instructions, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
43 hardware_mul32_m = 1 << hardware_mul32, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
44 hardware_div32_m = 1 << hardware_div32, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
45 hardware_fsmuld_m = 1 << hardware_fsmuld, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
46 v9_instructions_m = 1 << v9_instructions, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
47 vis1_instructions_m = 1 << vis1_instructions, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
48 vis2_instructions_m = 1 << vis2_instructions, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
49 sun4v_m = 1 << sun4v_instructions, |
| 0 | 50 |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
51 generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
52 generic_v9_m = generic_v8_m | v9_instructions_m, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
53 ultra3_m = generic_v9_m | vis1_instructions_m | vis2_instructions_m, |
| 0 | 54 |
| 55 // Temporary until we have something more accurate | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
56 niagara1_unique_m = sun4v_m, |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
57 niagara1_m = generic_v9_m | niagara1_unique_m |
| 0 | 58 }; |
| 59 | |
| 60 static int _features; | |
| 61 static const char* _features_str; | |
| 62 | |
| 63 static void print_features(); | |
| 64 static int determine_features(); | |
| 65 static int platform_features(int features); | |
| 66 | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
67 static bool is_niagara1(int features) { return (features & sun4v_m) != 0; } |
| 0 | 68 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
69 static int maximum_niagara1_processor_count() { return 32; } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
70 // Returns true if the platform is in the niagara line and |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
71 // newer than the niagara1. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
72 static bool is_niagara1_plus(); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
73 |
| 0 | 74 public: |
| 75 // Initialization | |
| 76 static void initialize(); | |
| 77 | |
| 78 // Instruction support | |
| 79 static bool has_v8() { return (_features & v8_instructions_m) != 0; } | |
| 80 static bool has_v9() { return (_features & v9_instructions_m) != 0; } | |
|
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
81 static bool has_hardware_mul32() { return (_features & hardware_mul32_m) != 0; } |
|
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
196
diff
changeset
|
82 static bool has_hardware_div32() { return (_features & hardware_div32_m) != 0; } |
| 0 | 83 static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; } |
| 84 static bool has_vis1() { return (_features & vis1_instructions_m) != 0; } | |
| 85 static bool has_vis2() { return (_features & vis2_instructions_m) != 0; } | |
| 86 | |
| 87 static bool supports_compare_and_exchange() | |
| 88 { return has_v9(); } | |
| 89 | |
| 90 static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m; } | |
| 91 static bool is_sun4v() { return (_features & sun4v_m) != 0; } | |
| 92 static bool is_niagara1() { return is_niagara1(_features); } | |
| 93 | |
| 94 static bool has_fast_fxtof() { return has_v9() && !is_ultra3(); } | |
| 95 | |
| 96 static const char* cpu_features() { return _features_str; } | |
| 97 | |
| 98 static intx L1_data_cache_line_size() { | |
| 99 return 64; // default prefetch block size on sparc | |
| 100 } | |
| 101 | |
| 102 // Prefetch | |
| 103 static intx prefetch_copy_interval_in_bytes() { | |
| 104 intx interval = PrefetchCopyIntervalInBytes; | |
| 105 return interval >= 0 ? interval : (has_v9() ? 512 : 0); | |
| 106 } | |
| 107 static intx prefetch_scan_interval_in_bytes() { | |
| 108 intx interval = PrefetchScanIntervalInBytes; | |
| 109 return interval >= 0 ? interval : (has_v9() ? 512 : 0); | |
| 110 } | |
| 111 static intx prefetch_fields_ahead() { | |
| 112 intx count = PrefetchFieldsAhead; | |
| 113 return count >= 0 ? count : (is_ultra3() ? 1 : 0); | |
| 114 } | |
| 115 | |
| 116 static intx allocate_prefetch_distance() { | |
| 117 // This method should be called before allocate_prefetch_style(). | |
| 118 intx count = AllocatePrefetchDistance; | |
| 119 if (count < 0) { // default is not defined ? | |
| 120 count = 512; | |
| 121 } | |
| 122 return count; | |
| 123 } | |
| 124 static intx allocate_prefetch_style() { | |
| 125 assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive"); | |
| 126 // Return 0 if AllocatePrefetchDistance was not defined. | |
| 127 return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0; | |
| 128 } | |
| 129 | |
| 130 // Legacy | |
| 131 static bool v8_instructions_work() { return has_v8() && !has_v9(); } | |
| 132 static bool v9_instructions_work() { return has_v9(); } | |
| 133 | |
| 134 // Assembler testing | |
| 135 static void allow_all(); | |
| 136 static void revert(); | |
| 137 | |
| 138 // Override the Abstract_VM_Version implementation. | |
| 139 static uint page_size_count() { return is_sun4v() ? 4 : 2; } | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
140 |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
141 // Calculates the number of parallel threads |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
142 static unsigned int calc_parallel_worker_threads(); |
| 0 | 143 }; |