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 "memory/allocation.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "runtime/os.hpp"
29 #include "vm_version_sparc.hpp"
30
31 # include <sys/auxv.h>
32 # include <sys/auxv_SPARC.h>
33 # include <sys/systeminfo.h>
34 # include <kstat.h>
35
36 // We need to keep these here as long as we have to build on Solaris
37 // versions before 10.
38 #ifndef SI_ARCHITECTURE_32
39 #define SI_ARCHITECTURE_32 516 /* basic 32-bit SI_ARCHITECTURE */
40 #endif
41
42 #ifndef SI_ARCHITECTURE_64
43 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */
44 #endif
45
46 static void do_sysinfo(int si, const char* string, int* features, int mask) {
47 char tmp;
48 size_t bufsize = sysinfo(si, &tmp, 1);
49
50 // All SI defines used below must be supported.
51 guarantee(bufsize != -1, "must be supported");
52
53 char* buf = (char*) os::malloc(bufsize, mtInternal);
54
55 if (buf == NULL)
56 return;
57
58 if (sysinfo(si, buf, bufsize) == bufsize) {
59 // Compare the string.
60 if (strcmp(buf, string) == 0) {
61 *features |= mask;
62 }
63 }
64
65 os::free(buf);
66 }
67
68 int VM_Version::platform_features(int features) {
69 assert(os::Solaris::supports_getisax(), "getisax() must be available");
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 // We only build on Solaris 10 and up, but some of the values below
109 // are not defined on all versions of Solaris 10, so we define them,
110 // if necessary.
111 #ifndef AV_SPARC_ASI_BLK_INIT
112 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */
113 #endif
114 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;
115
116 #ifndef AV_SPARC_FMAF
117 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */
118 #endif
119 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m;
120
121 #ifndef AV_SPARC_FMAU
122 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */
123 #endif
124 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m;
125
126 #ifndef AV_SPARC_VIS3
127 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */
128 #endif
129 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m;
130
131 #ifndef AV_SPARC_CBCOND
132 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */
133 #endif
134 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m;
135
136 #ifndef AV_SPARC_AES
137 #define AV_SPARC_AES 0x00020000 /* aes instrs supported */
138 #endif
139 if (av & AV_SPARC_AES) features |= aes_instructions_m;
140
141 #ifndef AV_SPARC_SHA1
142 #define AV_SPARC_SHA1 0x00400000 /* sha1 instruction supported */
143 #endif
144 if (av & AV_SPARC_SHA1) features |= sha1_instruction_m;
145
146 #ifndef AV_SPARC_SHA256
147 #define AV_SPARC_SHA256 0x00800000 /* sha256 instruction supported */
148 #endif
149 if (av & AV_SPARC_SHA256) features |= sha256_instruction_m;
150
151 #ifndef AV_SPARC_SHA512
152 #define AV_SPARC_SHA512 0x01000000 /* sha512 instruction supported */
153 #endif
154 if (av & AV_SPARC_SHA512) features |= sha512_instruction_m;
155
156 // Determine the machine type.
157 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);
158
159 {
160 // Using kstat to determine the machine type.
161 kstat_ctl_t* kc = kstat_open();
162 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);
163 const char* implementation = "UNKNOWN";
164 if (ksp != NULL) {
165 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {
166 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
167 for (int i = 0; i < ksp->ks_ndata; i++) {
168 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {
169 implementation = KSTAT_NAMED_STR_PTR(&knm[i]);
170 #ifndef PRODUCT
171 if (PrintMiscellaneous && Verbose) {
172 tty->print_cr("cpu_info.implementation: %s", implementation);
173 }
174 #endif
175 // Convert to UPPER case before compare.
176 char* impl = os::strdup_check_oom(implementation);
177
178 for (int i = 0; impl[i] != 0; i++)
179 impl[i] = (char)toupper((uint)impl[i]);
180
181 if (strstr(impl, "SPARC64") != NULL) {
182 features |= sparc64_family_m;
183 } else if (strstr(impl, "SPARC-M") != NULL) {
184 // M-series SPARC is based on T-series.
185 features |= (M_family_m | T_family_m);
186 } else if (strstr(impl, "SPARC-T") != NULL) {
187 features |= T_family_m;
188 if (strstr(impl, "SPARC-T1") != NULL) {
189 features |= T1_model_m;
190 }
191 } else {
192 if (strstr(impl, "SPARC") == NULL) {
193 #ifndef PRODUCT
194 // kstat on Solaris 8 virtual machines (branded zones)
195 // returns "(unsupported)" implementation. Solaris 8 is not
196 // supported anymore, but include this check to be on the
197 // safe side.
198 warning("kstat cpu_info implementation = '%s', assume generic SPARC", impl);
199 #endif
200 implementation = "SPARC";
201 }
202 }
203 os::free((void*)impl);
204 break;
205 }
206 } // for(
207 }
208 }
209 assert(strcmp(implementation, "UNKNOWN") != 0,
210 "unknown cpu info (changed kstat interface?)");
211 kstat_close(kc);
212 }
213
214 return features;
215 }