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comparison src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children 6af0a709d52b
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_vm_version_solaris_sparc.cpp.incl"
27
28 # include <sys/systeminfo.h>
29
30 int VM_Version::platform_features(int features) {
31 // We determine what sort of hardware we have via sysinfo(SI_ISALIST, ...).
32 // This isn't the best of all possible ways because there's not enough
33 // detail in the isa list it returns, but it's a bit less arcane than
34 // generating assembly code and an illegal instruction handler. We used
35 // to generate a getpsr trap, but that's even more arcane.
36 //
37 // Another possibility would be to use sysinfo(SI_PLATFORM, ...), but
38 // that would require more knowledge here than is wise.
39
40 // isalist spec via 'man isalist' as of 01-Aug-2001
41
42 char tmp;
43 size_t bufsize = sysinfo(SI_ISALIST, &tmp, 1);
44 char* buf = (char*)malloc(bufsize);
45
46 if (buf != NULL) {
47 if (sysinfo(SI_ISALIST, buf, bufsize) == bufsize) {
48 // Figure out what kind of sparc we have
49 char *sparc_string = strstr(buf, "sparc");
50 if (sparc_string != NULL) { features |= v8_instructions_m;
51 if (sparc_string[5] == 'v') {
52 if (sparc_string[6] == '8') {
53 if (sparc_string[7] == '-') features |= hardware_int_muldiv_m;
54 else if (sparc_string[7] == 'p') features |= generic_v9_m;
55 else features |= generic_v8_m;
56 } else if (sparc_string[6] == '9') features |= generic_v9_m;
57 }
58 }
59
60 // Check for visualization instructions
61 char *vis = strstr(buf, "vis");
62 if (vis != NULL) { features |= vis1_instructions_m;
63 if (vis[3] == '2') features |= vis2_instructions_m;
64 }
65 }
66 free(buf);
67 }
68
69 bufsize = sysinfo(SI_MACHINE, &tmp, 1);
70 buf = (char*)malloc(bufsize);
71
72 if (buf != NULL) {
73 if (sysinfo(SI_MACHINE, buf, bufsize) == bufsize) {
74 if (strstr(buf, "sun4v") != NULL) {
75 features |= sun4v_m;
76 }
77 }
78 free(buf);
79 }
80
81 return features;
82 }