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src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp@d2f8c38e543d
src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp
Fri, 07 Dec 2012 01:09:03 -0800
- author
- roland
- date
- Fri, 07 Dec 2012 01:09:03 -0800
- changeset 4325
- d2f8c38e543d
- parent 4153
- b9a9ed0f8eeb
- child 6312
- 04d32e7fad07
- permissions
- -rw-r--r--
Merge
1 /*
2 * Copyright (c) 2006, 2012, 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 */
25 #include "precompiled.hpp"
26 #include "runtime/os.hpp"
27 #include "vm_version_sparc.hpp"
29 # include <sys/auxv.h>
30 # include <sys/auxv_SPARC.h>
31 # include <sys/systeminfo.h>
32 # include <kstat.h>
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
40 #ifndef SI_ARCHITECTURE_64
41 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */
42 #endif
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);
48 // All SI defines used below must be supported.
49 guarantee(bufsize != -1, "must be supported");
51 char* buf = (char*) malloc(bufsize);
53 if (buf == NULL)
54 return;
56 if (sysinfo(si, buf, bufsize) == bufsize) {
57 // Compare the string.
58 if (strcmp(buf, string) == 0) {
59 *features |= mask;
60 }
61 }
63 free(buf);
64 }
66 int VM_Version::platform_features(int features) {
67 // getisax(2), SI_ARCHITECTURE_32, and SI_ARCHITECTURE_64 are
68 // supported on Solaris 10 and later.
69 if (os::Solaris::supports_getisax()) {
71 // Check 32-bit architecture.
72 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m);
74 // Check 64-bit architecture.
75 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m);
77 // Extract valid instruction set extensions.
78 uint_t av;
79 uint_t avn = os::Solaris::getisax(&av, 1);
80 assert(avn == 1, "should only return one av");
82 #ifndef PRODUCT
83 if (PrintMiscellaneous && Verbose)
84 tty->print_cr("getisax(2) returned: " PTR32_FORMAT, av);
85 #endif
87 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m;
88 if (av & AV_SPARC_DIV32) features |= hardware_div32_m;
89 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m;
90 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m;
91 if (av & AV_SPARC_POPC) features |= hardware_popc_m;
92 if (av & AV_SPARC_VIS) features |= vis1_instructions_m;
93 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m;
95 // Next values are not defined before Solaris 10
96 // but Solaris 8 is used for jdk6 update builds.
97 #ifndef AV_SPARC_ASI_BLK_INIT
98 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */
99 #endif
100 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;
102 #ifndef AV_SPARC_FMAF
103 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */
104 #endif
105 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m;
107 #ifndef AV_SPARC_FMAU
108 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */
109 #endif
110 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m;
112 #ifndef AV_SPARC_VIS3
113 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */
114 #endif
115 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m;
117 #ifndef AV_SPARC_CBCOND
118 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */
119 #endif
120 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m;
122 } else {
123 // getisax(2) failed, use the old legacy code.
124 #ifndef PRODUCT
125 if (PrintMiscellaneous && Verbose)
126 tty->print_cr("getisax(2) is not supported.");
127 #endif
129 char tmp;
130 size_t bufsize = sysinfo(SI_ISALIST, &tmp, 1);
131 char* buf = (char*) malloc(bufsize);
133 if (buf != NULL) {
134 if (sysinfo(SI_ISALIST, buf, bufsize) == bufsize) {
135 // Figure out what kind of sparc we have
136 char *sparc_string = strstr(buf, "sparc");
137 if (sparc_string != NULL) { features |= v8_instructions_m;
138 if (sparc_string[5] == 'v') {
139 if (sparc_string[6] == '8') {
140 if (sparc_string[7] == '-') { features |= hardware_mul32_m;
141 features |= hardware_div32_m;
142 } else if (sparc_string[7] == 'p') features |= generic_v9_m;
143 else features |= generic_v8_m;
144 } else if (sparc_string[6] == '9') features |= generic_v9_m;
145 }
146 }
148 // Check for visualization instructions
149 char *vis = strstr(buf, "vis");
150 if (vis != NULL) { features |= vis1_instructions_m;
151 if (vis[3] == '2') features |= vis2_instructions_m;
152 }
153 }
154 free(buf);
155 }
156 }
158 // Determine the machine type.
159 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);
161 {
162 // Using kstat to determine the machine type.
163 kstat_ctl_t* kc = kstat_open();
164 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);
165 const char* implementation = "UNKNOWN";
166 if (ksp != NULL) {
167 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {
168 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
169 for (int i = 0; i < ksp->ks_ndata; i++) {
170 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {
171 #ifndef KSTAT_DATA_STRING
172 #define KSTAT_DATA_STRING 9
173 #endif
174 if (knm[i].data_type == KSTAT_DATA_CHAR) {
175 // VM is running on Solaris 8 which does not have value.str.
176 implementation = &(knm[i].value.c[0]);
177 } else if (knm[i].data_type == KSTAT_DATA_STRING) {
178 // VM is running on Solaris 10.
179 #ifndef KSTAT_NAMED_STR_PTR
180 // Solaris 8 was used to build VM, define the structure it misses.
181 struct str_t {
182 union {
183 char *ptr; /* NULL-term string */
184 char __pad[8]; /* 64-bit padding */
185 } addr;
186 uint32_t len; /* # bytes for strlen + '\0' */
187 };
188 #define KSTAT_NAMED_STR_PTR(knptr) (( (str_t*)&((knptr)->value) )->addr.ptr)
189 #endif
190 implementation = KSTAT_NAMED_STR_PTR(&knm[i]);
191 }
192 #ifndef PRODUCT
193 if (PrintMiscellaneous && Verbose) {
194 tty->print_cr("cpu_info.implementation: %s", implementation);
195 }
196 #endif
197 // Convert to UPPER case before compare.
198 char* impl = strdup(implementation);
200 for (int i = 0; impl[i] != 0; i++)
201 impl[i] = (char)toupper((uint)impl[i]);
202 if (strstr(impl, "SPARC64") != NULL) {
203 features |= sparc64_family_m;
204 } else if (strstr(impl, "SPARC-M") != NULL) {
205 // M-series SPARC is based on T-series.
206 features |= (M_family_m | T_family_m);
207 } else if (strstr(impl, "SPARC-T") != NULL) {
208 features |= T_family_m;
209 if (strstr(impl, "SPARC-T1") != NULL) {
210 features |= T1_model_m;
211 }
212 } else {
213 if (strstr(impl, "SPARC") == NULL) {
214 #ifndef PRODUCT
215 // kstat on Solaris 8 virtual machines (branded zones)
216 // returns "(unsupported)" implementation.
217 warning("kstat cpu_info implementation = '%s', should contain SPARC", impl);
218 #endif
219 implementation = "SPARC";
220 }
221 }
222 free((void*)impl);
223 break;
224 }
225 } // for(
226 }
227 }
228 assert(strcmp(implementation, "UNKNOWN") != 0,
229 "unknown cpu info (changed kstat interface?)");
230 kstat_close(kc);
231 }
233 return features;
234 }
