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comparison src/cpu/sparc/vm/vm_version_sparc.hpp @ 641:6af0a709d52b

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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
comparison
equal deleted inserted replaced
625:2f2f54ed12ce 641:6af0a709d52b
1 /* 1 /*
2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
23 */ 23 */
24 24
25 class VM_Version: public Abstract_VM_Version { 25 class VM_Version: public Abstract_VM_Version {
26 protected: 26 protected:
27 enum Feature_Flag { 27 enum Feature_Flag {
28 v8_instructions = 0, 28 v8_instructions = 0,
29 hardware_int_muldiv = 1, 29 hardware_mul32 = 1,
30 hardware_fsmuld = 2, 30 hardware_div32 = 2,
31 v9_instructions = 3, 31 hardware_fsmuld = 3,
32 vis1_instructions = 4, 32 v9_instructions = 4,
33 vis2_instructions = 5, 33 vis1_instructions = 5,
34 sun4v_instructions = 6 34 vis2_instructions = 6,
35 sun4v_instructions = 7
35 }; 36 };
36 37
37 enum Feature_Flag_Set { 38 enum Feature_Flag_Set {
38 unknown_m = 0, 39 unknown_m = 0,
39 all_features_m = -1, 40 all_features_m = -1,
40 41
41 v8_instructions_m = 1 << v8_instructions, 42 v8_instructions_m = 1 << v8_instructions,
42 hardware_int_muldiv_m = 1 << hardware_int_muldiv, 43 hardware_mul32_m = 1 << hardware_mul32,
43 hardware_fsmuld_m = 1 << hardware_fsmuld, 44 hardware_div32_m = 1 << hardware_div32,
44 v9_instructions_m = 1 << v9_instructions, 45 hardware_fsmuld_m = 1 << hardware_fsmuld,
45 vis1_instructions_m = 1 << vis1_instructions, 46 v9_instructions_m = 1 << v9_instructions,
46 vis2_instructions_m = 1 << vis2_instructions, 47 vis1_instructions_m = 1 << vis1_instructions,
47 sun4v_m = 1 << sun4v_instructions, 48 vis2_instructions_m = 1 << vis2_instructions,
49 sun4v_m = 1 << sun4v_instructions,
48 50
49 generic_v8_m = v8_instructions_m | hardware_int_muldiv_m | hardware_fsmuld_m, 51 generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m,
50 generic_v9_m = generic_v8_m | v9_instructions_m | vis1_instructions_m, 52 generic_v9_m = generic_v8_m | v9_instructions_m,
51 ultra3_m = generic_v9_m | vis2_instructions_m, 53 ultra3_m = generic_v9_m | vis1_instructions_m | vis2_instructions_m,
52 54
53 // Temporary until we have something more accurate 55 // Temporary until we have something more accurate
54 niagara1_unique_m = sun4v_m, 56 niagara1_unique_m = sun4v_m,
55 niagara1_m = generic_v9_m | niagara1_unique_m 57 niagara1_m = generic_v9_m | niagara1_unique_m
56 }; 58 };
57 59
58 static int _features; 60 static int _features;
59 static const char* _features_str; 61 static const char* _features_str;
60 62
61 static void print_features(); 63 static void print_features();
62 static int determine_features(); 64 static int determine_features();
63 static int platform_features(int features); 65 static int platform_features(int features);
64 66
65 static bool is_niagara1(int features) { return (features & niagara1_m) == niagara1_m; } 67 static bool is_niagara1(int features) { return (features & sun4v_m) != 0; }
66 68
67 static int maximum_niagara1_processor_count() { return 32; } 69 static int maximum_niagara1_processor_count() { return 32; }
68 // Returns true if the platform is in the niagara line and 70 // Returns true if the platform is in the niagara line and
69 // newer than the niagara1. 71 // newer than the niagara1.
70 static bool is_niagara1_plus(); 72 static bool is_niagara1_plus();
74 static void initialize(); 76 static void initialize();
75 77
76 // Instruction support 78 // Instruction support
77 static bool has_v8() { return (_features & v8_instructions_m) != 0; } 79 static bool has_v8() { return (_features & v8_instructions_m) != 0; }
78 static bool has_v9() { return (_features & v9_instructions_m) != 0; } 80 static bool has_v9() { return (_features & v9_instructions_m) != 0; }
79 static bool has_hardware_int_muldiv() { return (_features & hardware_int_muldiv_m) != 0; } 81 static bool has_hardware_mul32() { return (_features & hardware_mul32_m) != 0; }
82 static bool has_hardware_div32() { return (_features & hardware_div32_m) != 0; }
80 static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; } 83 static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; }
81 static bool has_vis1() { return (_features & vis1_instructions_m) != 0; } 84 static bool has_vis1() { return (_features & vis1_instructions_m) != 0; }
82 static bool has_vis2() { return (_features & vis2_instructions_m) != 0; } 85 static bool has_vis2() { return (_features & vis2_instructions_m) != 0; }
83 86
84 static bool supports_compare_and_exchange() 87 static bool supports_compare_and_exchange()