1 /*
2 * Copyright (c) 2006, 2014, 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 #include "precompiled.hpp"
26 #include "runtime/os.hpp"
27 #include "vm_version_sparc.hpp"
28
29 # include <sys/auxv.h>
30 # include <sys/auxv_SPARC.h>
31 # include <sys/systeminfo.h>
32 # include <kstat.h>
33
34 // We need to keep these here as long as we have to build on Solaris
35 // versions before 10.
36 #ifndef SI_ARCHITECTURE_32
37 #define SI_ARCHITECTURE_32 516 /* basic 32-bit SI_ARCHITECTURE */
38 #endif
39
40 #ifndef SI_ARCHITECTURE_64
41 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */
42 #endif
43
44 static void do_sysinfo(int si, const char* string, int* features, int mask) {
45 char tmp;
46 size_t bufsize = sysinfo(si, &tmp, 1);
47
48 // All SI defines used below must be supported.
49 guarantee(bufsize != -1, "must be supported");
50
51 char* buf = (char*) malloc(bufsize);
52
53 if (buf == NULL)
54 return;
55
56 if (sysinfo(si, buf, bufsize) == bufsize) {
57 // Compare the string.
58 if (strcmp(buf, string) == 0) {
59 *features |= mask;
60 }
61 }
62
63 free(buf);
64 }
65
66 int VM_Version::platform_features(int features) {
67 // Check 32-bit architecture.
68 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m);
69
70 // Check 64-bit architecture.
71 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m);
72
73 // Extract valid instruction set extensions.
74 uint_t avs[2];
75 uint_t avn = os::Solaris::getisax(avs, 2);
76 assert(avn <= 2, "should return two or less av's");
77 uint_t av = avs[0];
78
79 #ifndef PRODUCT
80 if (PrintMiscellaneous && Verbose) {
81 tty->print("getisax(2) returned: " PTR32_FORMAT, av);
82 if (avn > 1) {
83 tty->print(", " PTR32_FORMAT, avs[1]);
84 }
85 tty->cr();
86 }
87 #endif
88
89 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m;
90 if (av & AV_SPARC_DIV32) features |= hardware_div32_m;
91 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m;
92 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m;
93 if (av & AV_SPARC_POPC) features |= hardware_popc_m;
94 if (av & AV_SPARC_VIS) features |= vis1_instructions_m;
95 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m;
96 if (avn > 1) {
97 uint_t av2 = avs[1];
98 #ifndef AV2_SPARC_SPARC5
99 #define AV2_SPARC_SPARC5 0x00000008 /* The 29 new fp and sub instructions */
100 #endif
101 if (av2 & AV2_SPARC_SPARC5) features |= sparc5_instructions_m;
102 }
103
104 // We only build on Solaris 10 and up, but some of the values below
105 // are not defined on all versions of Solaris 10, so we define them,
106 // if necessary.
107 #ifndef AV_SPARC_ASI_BLK_INIT
108 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */
109 #endif
110 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;
111
112 #ifndef AV_SPARC_FMAF
113 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */
114 #endif
115 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m;
116
117 #ifndef AV_SPARC_FMAU
118 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */
119 #endif
120 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m;
121
122 #ifndef AV_SPARC_VIS3
123 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */
124 #endif
125 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m;
126
127 #ifndef AV_SPARC_CBCOND
128 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */
129 #endif
130 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m;
131
132 #ifndef AV_SPARC_AES
133 #define AV_SPARC_AES 0x00020000 /* aes instrs supported */
134 #endif
135 if (av & AV_SPARC_AES) features |= aes_instructions_m;
136
137 #ifndef AV_SPARC_SHA1
138 #define AV_SPARC_SHA1 0x00400000 /* sha1 instruction supported */
139 #endif
140 if (av & AV_SPARC_SHA1) features |= sha1_instruction_m;
141
142 #ifndef AV_SPARC_SHA256
143 #define AV_SPARC_SHA256 0x00800000 /* sha256 instruction supported */
144 #endif
145 if (av & AV_SPARC_SHA256) features |= sha256_instruction_m;
146
147 #ifndef AV_SPARC_SHA512
148 #define AV_SPARC_SHA512 0x01000000 /* sha512 instruction supported */
149 #endif
150 if (av & AV_SPARC_SHA512) features |= sha512_instruction_m;
151
152 // Determine the machine type.
153 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);
154
155 {
156 // Using kstat to determine the machine type.
157 kstat_ctl_t* kc = kstat_open();
158 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);
159 const char* implementation = "UNKNOWN";
160 if (ksp != NULL) {
161 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {
162 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
163 for (int i = 0; i < ksp->ks_ndata; i++) {
164 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {
165 implementation = KSTAT_NAMED_STR_PTR(&knm[i]);
166 #ifndef PRODUCT
167 if (PrintMiscellaneous && Verbose) {
168 tty->print_cr("cpu_info.implementation: %s", implementation);
169 }
170 #endif
171 // Convert to UPPER case before compare.
172 char* impl = strdup(implementation);
173
174 for (int i = 0; impl[i] != 0; i++)
175 impl[i] = (char)toupper((uint)impl[i]);
176
177 if (strstr(impl, "SPARC64") != NULL) {
178 features |= sparc64_family_m;
179 } else if (strstr(impl, "SPARC-M") != NULL) {
180 // M-series SPARC is based on T-series.
181 features |= (M_family_m | T_family_m);
182 } else if (strstr(impl, "SPARC-T") != NULL) {
183 features |= T_family_m;
184 if (strstr(impl, "SPARC-T1") != NULL) {
185 features |= T1_model_m;
186 }
187 } else {
188 if (strstr(impl, "SPARC") == NULL) {
189 #ifndef PRODUCT
190 // kstat on Solaris 8 virtual machines (branded zones)
191 // returns "(unsupported)" implementation. Solaris 8 is not
192 // supported anymore, but include this check to be on the
193 // safe side.
194 warning("kstat cpu_info implementation = '%s', assume generic SPARC", impl);
195 #endif
196 implementation = "SPARC";
197 }
198 }
199 free((void*)impl);
200 break;
201 }
202 } // for(
203 }
204 }
205 assert(strcmp(implementation, "UNKNOWN") != 0,
206 "unknown cpu info (changed kstat interface?)");
207 kstat_close(kc);
208 }
209
210 return features;
211 }