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 */
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 // getisax(2), SI_ARCHITECTURE_32, and SI_ARCHITECTURE_64 are
68 // supported on Solaris 10 and later.
69 if (os::Solaris::supports_getisax()) {
70
71 // Check 32-bit architecture.
72 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m);
73
74 // Check 64-bit architecture.
75 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m);
76
77 // Extract valid instruction set extensions.
78 uint_t avs[2];
79 uint_t avn = os::Solaris::getisax(avs, 2);
80 assert(avn <= 2, "should return two or less av's");
81 uint_t av = avs[0];
82
83 #ifndef PRODUCT
84 if (PrintMiscellaneous && Verbose) {
85 tty->print("getisax(2) returned: " PTR32_FORMAT, av);
86 if (avn > 1) {
87 tty->print(", " PTR32_FORMAT, avs[1]);
88 }
89 tty->cr();
90 }
91 #endif
92
93 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m;
94 if (av & AV_SPARC_DIV32) features |= hardware_div32_m;
95 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m;
96 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m;
97 if (av & AV_SPARC_POPC) features |= hardware_popc_m;
98 if (av & AV_SPARC_VIS) features |= vis1_instructions_m;
99 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m;
100 if (avn > 1) {
101 uint_t av2 = avs[1];
102 #ifndef AV2_SPARC_SPARC5
103 #define AV2_SPARC_SPARC5 0x00000008 /* The 29 new fp and sub instructions */
104 #endif
105 if (av2 & AV2_SPARC_SPARC5) features |= sparc5_instructions_m;
106 }
107
108 // Next values are not defined before Solaris 10
109 // but Solaris 8 is used for jdk6 update builds.
110 #ifndef AV_SPARC_ASI_BLK_INIT
111 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */
112 #endif
113 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;
114
115 #ifndef AV_SPARC_FMAF
116 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */
117 #endif
118 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m;
119
120 #ifndef AV_SPARC_FMAU
121 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */
122 #endif
123 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m;
124
125 #ifndef AV_SPARC_VIS3
126 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */
127 #endif
128 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m;
129
130 #ifndef AV_SPARC_CBCOND
131 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */
132 #endif
133 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m;
134
135 #ifndef AV_SPARC_AES
136 #define AV_SPARC_AES 0x00020000 /* aes instrs supported */
137 #endif
138 if (av & AV_SPARC_AES) features |= aes_instructions_m;
139
140 } else {
141 // getisax(2) failed, use the old legacy code.
142 #ifndef PRODUCT
143 if (PrintMiscellaneous && Verbose)
144 tty->print_cr("getisax(2) is not supported.");
145 #endif
146
147 char tmp;
148 size_t bufsize = sysinfo(SI_ISALIST, &tmp, 1);
149 char* buf = (char*) malloc(bufsize);
150
151 if (buf != NULL) {
152 if (sysinfo(SI_ISALIST, buf, bufsize) == bufsize) {
153 // Figure out what kind of sparc we have
154 char *sparc_string = strstr(buf, "sparc");
155 if (sparc_string != NULL) { features |= v8_instructions_m;
156 if (sparc_string[5] == 'v') {
157 if (sparc_string[6] == '8') {
158 if (sparc_string[7] == '-') { features |= hardware_mul32_m;
159 features |= hardware_div32_m;
160 } else if (sparc_string[7] == 'p') features |= generic_v9_m;
161 else features |= generic_v8_m;
162 } else if (sparc_string[6] == '9') features |= generic_v9_m;
163 }
164 }
165
166 // Check for visualization instructions
167 char *vis = strstr(buf, "vis");
168 if (vis != NULL) { features |= vis1_instructions_m;
169 if (vis[3] == '2') features |= vis2_instructions_m;
170 }
171 }
172 free(buf);
173 }
174 }
175
176 // Determine the machine type.
177 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);
178
179 {
180 // Using kstat to determine the machine type.
181 kstat_ctl_t* kc = kstat_open();
182 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);
183 const char* implementation = "UNKNOWN";
184 if (ksp != NULL) {
185 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {
186 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
187 for (int i = 0; i < ksp->ks_ndata; i++) {
188 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {
189 #ifndef KSTAT_DATA_STRING
190 #define KSTAT_DATA_STRING 9
191 #endif
192 if (knm[i].data_type == KSTAT_DATA_CHAR) {
193 // VM is running on Solaris 8 which does not have value.str.
194 implementation = &(knm[i].value.c[0]);
195 } else if (knm[i].data_type == KSTAT_DATA_STRING) {
196 // VM is running on Solaris 10.
197 #ifndef KSTAT_NAMED_STR_PTR
198 // Solaris 8 was used to build VM, define the structure it misses.
199 struct str_t {
200 union {
201 char *ptr; /* NULL-term string */
202 char __pad[8]; /* 64-bit padding */
203 } addr;
204 uint32_t len; /* # bytes for strlen + '\0' */
205 };
206 #define KSTAT_NAMED_STR_PTR(knptr) (( (str_t*)&((knptr)->value) )->addr.ptr)
207 #endif
208 implementation = KSTAT_NAMED_STR_PTR(&knm[i]);
209 }
210 #ifndef PRODUCT
211 if (PrintMiscellaneous && Verbose) {
212 tty->print_cr("cpu_info.implementation: %s", implementation);
213 }
214 #endif
215 // Convert to UPPER case before compare.
216 char* impl = strdup(implementation);
217
218 for (int i = 0; impl[i] != 0; i++)
219 impl[i] = (char)toupper((uint)impl[i]);
220 if (strstr(impl, "SPARC64") != NULL) {
221 features |= sparc64_family_m;
222 } else if (strstr(impl, "SPARC-M") != NULL) {
223 // M-series SPARC is based on T-series.
224 features |= (M_family_m | T_family_m);
225 } else if (strstr(impl, "SPARC-T") != NULL) {
226 features |= T_family_m;
227 if (strstr(impl, "SPARC-T1") != NULL) {
228 features |= T1_model_m;
229 }
230 } else {
231 if (strstr(impl, "SPARC") == NULL) {
232 #ifndef PRODUCT
233 // kstat on Solaris 8 virtual machines (branded zones)
234 // returns "(unsupported)" implementation.
235 warning("kstat cpu_info implementation = '%s', should contain SPARC", impl);
236 #endif
237 implementation = "SPARC";
238 }
239 }
240 free((void*)impl);
241 break;
242 }
243 } // for(
244 }
245 }
246 assert(strcmp(implementation, "UNKNOWN") != 0,
247 "unknown cpu info (changed kstat interface?)");
248 kstat_close(kc);
249 }
250
251 return features;
252 }