Mon, 12 Mar 2012 15:28:07 -0700
7152957: VM crashes with assert(false) failed: bad AD file
Reviewed-by: kvn, never
Contributed-by: nils.eliasson@oracle.com
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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25 #ifndef CPU_SPARC_VM_VM_VERSION_SPARC_HPP
26 #define CPU_SPARC_VM_VM_VERSION_SPARC_HPP
28 #include "runtime/globals_extension.hpp"
29 #include "runtime/vm_version.hpp"
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 sparc64_family = 13,
48 T_family = 14,
49 T1_model = 15,
50 cbcond_instructions = 16
51 };
53 enum Feature_Flag_Set {
54 unknown_m = 0,
55 all_features_m = -1,
57 v8_instructions_m = 1 << v8_instructions,
58 hardware_mul32_m = 1 << hardware_mul32,
59 hardware_div32_m = 1 << hardware_div32,
60 hardware_fsmuld_m = 1 << hardware_fsmuld,
61 hardware_popc_m = 1 << hardware_popc,
62 v9_instructions_m = 1 << v9_instructions,
63 vis1_instructions_m = 1 << vis1_instructions,
64 vis2_instructions_m = 1 << vis2_instructions,
65 sun4v_m = 1 << sun4v_instructions,
66 blk_init_instructions_m = 1 << blk_init_instructions,
67 fmaf_instructions_m = 1 << fmaf_instructions,
68 fmau_instructions_m = 1 << fmau_instructions,
69 vis3_instructions_m = 1 << vis3_instructions,
70 sparc64_family_m = 1 << sparc64_family,
71 T_family_m = 1 << T_family,
72 T1_model_m = 1 << T1_model,
73 cbcond_instructions_m = 1 << cbcond_instructions,
75 generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m,
76 generic_v9_m = generic_v8_m | v9_instructions_m,
77 ultra3_m = generic_v9_m | vis1_instructions_m | vis2_instructions_m,
79 // Temporary until we have something more accurate
80 niagara1_unique_m = sun4v_m,
81 niagara1_m = generic_v9_m | niagara1_unique_m
82 };
84 static int _features;
85 static const char* _features_str;
87 static void print_features();
88 static int determine_features();
89 static int platform_features(int features);
91 // Returns true if the platform is in the niagara line (T series)
92 static bool is_T_family(int features) { return (features & T_family_m) != 0; }
93 static bool is_niagara() { return is_T_family(_features); }
94 DEBUG_ONLY( static bool is_niagara(int features) { return (features & sun4v_m) != 0; } )
96 // Returns true if it is niagara1 (T1).
97 static bool is_T1_model(int features) { return is_T_family(features) && ((features & T1_model_m) != 0); }
99 static int maximum_niagara1_processor_count() { return 32; }
101 public:
102 // Initialization
103 static void initialize();
105 // Instruction support
106 static bool has_v8() { return (_features & v8_instructions_m) != 0; }
107 static bool has_v9() { return (_features & v9_instructions_m) != 0; }
108 static bool has_hardware_mul32() { return (_features & hardware_mul32_m) != 0; }
109 static bool has_hardware_div32() { return (_features & hardware_div32_m) != 0; }
110 static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; }
111 static bool has_hardware_popc() { return (_features & hardware_popc_m) != 0; }
112 static bool has_vis1() { return (_features & vis1_instructions_m) != 0; }
113 static bool has_vis2() { return (_features & vis2_instructions_m) != 0; }
114 static bool has_vis3() { return (_features & vis3_instructions_m) != 0; }
115 static bool has_blk_init() { return (_features & blk_init_instructions_m) != 0; }
116 static bool has_cbcond() { return (_features & cbcond_instructions_m) != 0; }
118 static bool supports_compare_and_exchange()
119 { return has_v9(); }
121 // Returns true if the platform is in the niagara line (T series)
122 // and newer than the niagara1.
123 static bool is_niagara_plus() { return is_T_family(_features) && !is_T1_model(_features); }
124 static bool is_T4() { return is_T_family(_features) && has_cbcond(); }
126 // Fujitsu SPARC64
127 static bool is_sparc64() { return (_features & sparc64_family_m) != 0; }
129 static bool is_sun4v() { return (_features & sun4v_m) != 0; }
130 static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m && !is_sun4v() && !is_sparc64(); }
132 static bool has_fast_fxtof() { return is_niagara() || is_sparc64() || has_v9() && !is_ultra3(); }
133 static bool has_fast_idiv() { return is_niagara_plus() || is_sparc64(); }
135 // T4 and newer Sparc have fast RDPC instruction.
136 static bool has_fast_rdpc() { return is_T4(); }
138 // On T4 and newer Sparc BIS to the beginning of cache line always zeros it.
139 static bool has_block_zeroing() { return has_blk_init() && is_T4(); }
141 static const char* cpu_features() { return _features_str; }
143 static intx prefetch_data_size() {
144 return is_T4() ? 32 : 64; // default prefetch block size on sparc
145 }
147 // Prefetch
148 static intx prefetch_copy_interval_in_bytes() {
149 intx interval = PrefetchCopyIntervalInBytes;
150 return interval >= 0 ? interval : (has_v9() ? 512 : 0);
151 }
152 static intx prefetch_scan_interval_in_bytes() {
153 intx interval = PrefetchScanIntervalInBytes;
154 return interval >= 0 ? interval : (has_v9() ? 512 : 0);
155 }
156 static intx prefetch_fields_ahead() {
157 intx count = PrefetchFieldsAhead;
158 return count >= 0 ? count : (is_ultra3() ? 1 : 0);
159 }
161 static intx allocate_prefetch_distance() {
162 // This method should be called before allocate_prefetch_style().
163 intx count = AllocatePrefetchDistance;
164 if (count < 0) { // default is not defined ?
165 count = 512;
166 }
167 return count;
168 }
169 static intx allocate_prefetch_style() {
170 assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive");
171 // Return 0 if AllocatePrefetchDistance was not defined.
172 return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0;
173 }
175 // Legacy
176 static bool v8_instructions_work() { return has_v8() && !has_v9(); }
177 static bool v9_instructions_work() { return has_v9(); }
179 // Assembler testing
180 static void allow_all();
181 static void revert();
183 // Override the Abstract_VM_Version implementation.
184 static uint page_size_count() { return is_sun4v() ? 4 : 2; }
186 // Calculates the number of parallel threads
187 static unsigned int calc_parallel_worker_threads();
188 };
190 #endif // CPU_SPARC_VM_VM_VERSION_SPARC_HPP