Mercurial > hg > truffle
comparison src/cpu/sparc/vm/vm_version_sparc.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 28372612af5e |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 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 { | |
28 v8_instructions = 0, | |
29 hardware_int_muldiv = 1, | |
30 hardware_fsmuld = 2, | |
31 v9_instructions = 3, | |
32 vis1_instructions = 4, | |
33 vis2_instructions = 5, | |
34 sun4v_instructions = 6 | |
35 }; | |
36 | |
37 enum Feature_Flag_Set { | |
38 unknown_m = 0, | |
39 all_features_m = -1, | |
40 | |
41 v8_instructions_m = 1 << v8_instructions, | |
42 hardware_int_muldiv_m = 1 << hardware_int_muldiv, | |
43 hardware_fsmuld_m = 1 << hardware_fsmuld, | |
44 v9_instructions_m = 1 << v9_instructions, | |
45 vis1_instructions_m = 1 << vis1_instructions, | |
46 vis2_instructions_m = 1 << vis2_instructions, | |
47 sun4v_m = 1 << sun4v_instructions, | |
48 | |
49 generic_v8_m = v8_instructions_m | hardware_int_muldiv_m | hardware_fsmuld_m, | |
50 generic_v9_m = generic_v8_m | v9_instructions_m | vis1_instructions_m, | |
51 ultra3_m = generic_v9_m | vis2_instructions_m, | |
52 | |
53 // Temporary until we have something more accurate | |
54 niagara1_unique_m = sun4v_m, | |
55 niagara1_m = generic_v9_m | niagara1_unique_m | |
56 }; | |
57 | |
58 static int _features; | |
59 static const char* _features_str; | |
60 | |
61 static void print_features(); | |
62 static int determine_features(); | |
63 static int platform_features(int features); | |
64 | |
65 static bool is_niagara1(int features) { return (features & niagara1_m) == niagara1_m; } | |
66 | |
67 public: | |
68 // Initialization | |
69 static void initialize(); | |
70 | |
71 // Instruction support | |
72 static bool has_v8() { return (_features & v8_instructions_m) != 0; } | |
73 static bool has_v9() { return (_features & v9_instructions_m) != 0; } | |
74 static bool has_hardware_int_muldiv() { return (_features & hardware_int_muldiv_m) != 0; } | |
75 static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; } | |
76 static bool has_vis1() { return (_features & vis1_instructions_m) != 0; } | |
77 static bool has_vis2() { return (_features & vis2_instructions_m) != 0; } | |
78 | |
79 static bool supports_compare_and_exchange() | |
80 { return has_v9(); } | |
81 | |
82 static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m; } | |
83 static bool is_sun4v() { return (_features & sun4v_m) != 0; } | |
84 static bool is_niagara1() { return is_niagara1(_features); } | |
85 | |
86 static bool has_fast_fxtof() { return has_v9() && !is_ultra3(); } | |
87 | |
88 static const char* cpu_features() { return _features_str; } | |
89 | |
90 static intx L1_data_cache_line_size() { | |
91 return 64; // default prefetch block size on sparc | |
92 } | |
93 | |
94 // Prefetch | |
95 static intx prefetch_copy_interval_in_bytes() { | |
96 intx interval = PrefetchCopyIntervalInBytes; | |
97 return interval >= 0 ? interval : (has_v9() ? 512 : 0); | |
98 } | |
99 static intx prefetch_scan_interval_in_bytes() { | |
100 intx interval = PrefetchScanIntervalInBytes; | |
101 return interval >= 0 ? interval : (has_v9() ? 512 : 0); | |
102 } | |
103 static intx prefetch_fields_ahead() { | |
104 intx count = PrefetchFieldsAhead; | |
105 return count >= 0 ? count : (is_ultra3() ? 1 : 0); | |
106 } | |
107 | |
108 static intx allocate_prefetch_distance() { | |
109 // This method should be called before allocate_prefetch_style(). | |
110 intx count = AllocatePrefetchDistance; | |
111 if (count < 0) { // default is not defined ? | |
112 count = 512; | |
113 } | |
114 return count; | |
115 } | |
116 static intx allocate_prefetch_style() { | |
117 assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive"); | |
118 // Return 0 if AllocatePrefetchDistance was not defined. | |
119 return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0; | |
120 } | |
121 | |
122 // Legacy | |
123 static bool v8_instructions_work() { return has_v8() && !has_v9(); } | |
124 static bool v9_instructions_work() { return has_v9(); } | |
125 | |
126 // Assembler testing | |
127 static void allow_all(); | |
128 static void revert(); | |
129 | |
130 // Override the Abstract_VM_Version implementation. | |
131 static uint page_size_count() { return is_sun4v() ? 4 : 2; } | |
132 }; |