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/*
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* Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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# include "incls/_precompiled.incl"
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# include "incls/_vm_version_solaris_sparc.cpp.incl"
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# include <sys/systeminfo.h>
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int VM_Version::platform_features(int features) {
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// We determine what sort of hardware we have via sysinfo(SI_ISALIST, ...).
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// This isn't the best of all possible ways because there's not enough
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// detail in the isa list it returns, but it's a bit less arcane than
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// generating assembly code and an illegal instruction handler. We used
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// to generate a getpsr trap, but that's even more arcane.
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//
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// Another possibility would be to use sysinfo(SI_PLATFORM, ...), but
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// that would require more knowledge here than is wise.
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// isalist spec via 'man isalist' as of 01-Aug-2001
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char tmp;
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size_t bufsize = sysinfo(SI_ISALIST, &tmp, 1);
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char* buf = (char*)malloc(bufsize);
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if (buf != NULL) {
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if (sysinfo(SI_ISALIST, buf, bufsize) == bufsize) {
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// Figure out what kind of sparc we have
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char *sparc_string = strstr(buf, "sparc");
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if (sparc_string != NULL) { features |= v8_instructions_m;
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if (sparc_string[5] == 'v') {
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if (sparc_string[6] == '8') {
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if (sparc_string[7] == '-') features |= hardware_int_muldiv_m;
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else if (sparc_string[7] == 'p') features |= generic_v9_m;
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else features |= generic_v8_m;
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} else if (sparc_string[6] == '9') features |= generic_v9_m;
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}
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}
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// Check for visualization instructions
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char *vis = strstr(buf, "vis");
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if (vis != NULL) { features |= vis1_instructions_m;
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if (vis[3] == '2') features |= vis2_instructions_m;
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}
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}
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free(buf);
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}
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bufsize = sysinfo(SI_MACHINE, &tmp, 1);
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buf = (char*)malloc(bufsize);
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if (buf != NULL) {
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if (sysinfo(SI_MACHINE, buf, bufsize) == bufsize) {
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if (strstr(buf, "sun4v") != NULL) {
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features |= sun4v_m;
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}
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}
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free(buf);
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}
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return features;
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}
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