1 /*
2 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_X86_VM_VM_VERSION_EXT_X86_HPP
26 #define CPU_X86_VM_VM_VERSION_EXT_X86_HPP
27
28 #include "runtime/vm_version.hpp"
29 #include "utilities/macros.hpp"
30
31 class VM_Version_Ext : public VM_Version {
32
33 enum {
34 ExtendedFamilyIdLength_INTEL = 16,
35 ExtendedFamilyIdLength_AMD = 24
36 };
37
38 private:
39 static const size_t VENDOR_LENGTH;
40 static const size_t CPU_EBS_MAX_LENGTH;
41 static const size_t CPU_TYPE_DESC_BUF_SIZE;
42 static const size_t CPU_DETAILED_DESC_BUF_SIZE;
43
44 static const char* const _family_id_intel[ExtendedFamilyIdLength_INTEL];
45 static const char* const _family_id_amd[ExtendedFamilyIdLength_AMD];
46 static const char* const _brand_id[];
47 static const char* const _model_id_pentium_pro[];
48
49 static const char* const _feature_edx_id[];
50 static const char* const _feature_extended_edx_id[];
51 static const char* const _feature_ecx_id[];
52 static const char* const _feature_extended_ecx_id[];
53
54 static int _no_of_threads;
55 static int _no_of_cores;
56 static int _no_of_packages;
57 static char* _cpu_brand_string;
58 static jlong _max_qualified_cpu_frequency;
59
60 static const char* cpu_family_description(void);
61 static const char* cpu_model_description(void);
62 static const char* cpu_brand(void);
63 static const char* cpu_brand_string(void);
64
65 static int cpu_type_description(char* const buf, size_t buf_len);
66 static int cpu_detailed_description(char* const buf, size_t buf_len);
67 static int cpu_extended_brand_string(char* const buf, size_t buf_len);
68
69 static bool cpu_is_em64t(void);
70 static bool is_netburst(void);
71
72 // Returns bytes written excluding termninating null byte.
73 static size_t cpu_write_support_string(char* const buf, size_t buf_len);
74 static void resolve_cpu_information_details(void);
75 static jlong max_qualified_cpu_freq_from_brand_string(void);
76
77 public:
78 // Offsets for cpuid asm stub brand string
79 static ByteSize proc_name_0_offset() { return byte_offset_of(CpuidInfo, proc_name_0); }
80 static ByteSize proc_name_1_offset() { return byte_offset_of(CpuidInfo, proc_name_1); }
81 static ByteSize proc_name_2_offset() { return byte_offset_of(CpuidInfo, proc_name_2); }
82 static ByteSize proc_name_3_offset() { return byte_offset_of(CpuidInfo, proc_name_3); }
83 static ByteSize proc_name_4_offset() { return byte_offset_of(CpuidInfo, proc_name_4); }
84 static ByteSize proc_name_5_offset() { return byte_offset_of(CpuidInfo, proc_name_5); }
85 static ByteSize proc_name_6_offset() { return byte_offset_of(CpuidInfo, proc_name_6); }
86 static ByteSize proc_name_7_offset() { return byte_offset_of(CpuidInfo, proc_name_7); }
87 static ByteSize proc_name_8_offset() { return byte_offset_of(CpuidInfo, proc_name_8); }
88 static ByteSize proc_name_9_offset() { return byte_offset_of(CpuidInfo, proc_name_9); }
89 static ByteSize proc_name_10_offset() { return byte_offset_of(CpuidInfo, proc_name_10); }
90 static ByteSize proc_name_11_offset() { return byte_offset_of(CpuidInfo, proc_name_11); }
91
92 static int number_of_threads(void);
93 static int number_of_cores(void);
94 static int number_of_sockets(void);
95
96 static jlong maximum_qualified_cpu_frequency(void);
97
98 static bool supports_tscinv_ext(void);
99
100 static const char* cpu_name(void);
101 static const char* cpu_description(void);
102
103 static void initialize();
104 };
105
106 #endif // CPU_X86_VM_VM_VERSION_EXT_X86_HPP