jdk8-mips64-public/hotspot: src/os_cpu/solaris_sparc/vm/vm_version_solaris

     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  */

    25 # include "incls/_precompiled.incl"

    26 # include "incls/_vm_version_solaris_sparc.cpp.incl"

    28 # include <sys/systeminfo.h>

    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.

    40   // isalist spec via 'man isalist' as of 01-Aug-2001

    42   char   tmp;

    43   size_t bufsize  = sysinfo(SI_ISALIST, &tmp, 1);

    44   char*  buf      = (char*)malloc(bufsize);

    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       }

    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   }

    69   bufsize = sysinfo(SI_MACHINE, &tmp, 1);

    70   buf     = (char*)malloc(bufsize);

    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   }

    81   return features;

    82 }

src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp@a61af66fc99e