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 /*

  * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "precompiled.hpp"

 #include "runtime/os.hpp"

 #include "vm_version_sparc.hpp"

 # include <sys/auxv.h>

 # include <sys/auxv_SPARC.h>

 # include <sys/systeminfo.h>

 # include <kstat.h>

 // We need to keep these here as long as we have to build on Solaris

 // versions before 10.

 #ifndef SI_ARCHITECTURE_32

 #define SI_ARCHITECTURE_32      516     /* basic 32-bit SI_ARCHITECTURE */

 #endif

 #ifndef SI_ARCHITECTURE_64

 #define SI_ARCHITECTURE_64      517     /* basic 64-bit SI_ARCHITECTURE */

 #endif

 static void do_sysinfo(int si, const char* string, int* features, int mask) {

   char   tmp;

   size_t bufsize = sysinfo(si, &tmp, 1);

   // All SI defines used below must be supported.

   guarantee(bufsize != -1, "must be supported");

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

   if (buf == NULL)

     return;

   if (sysinfo(si, buf, bufsize) == bufsize) {

     // Compare the string.

     if (strcmp(buf, string) == 0) {

       *features |= mask;

     }

   }

   free(buf);

 }

 int VM_Version::platform_features(int features) {

   // getisax(2), SI_ARCHITECTURE_32, and SI_ARCHITECTURE_64 are

   // supported on Solaris 10 and later.

   if (os::Solaris::supports_getisax()) {

     // Check 32-bit architecture.

     do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m);

     // Check 64-bit architecture.

     do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m);

     // Extract valid instruction set extensions.

     uint_t av;

     uint_t avn = os::Solaris::getisax(&av, 1);

     assert(avn == 1, "should only return one av");

 #ifndef PRODUCT

     if (PrintMiscellaneous && Verbose)

       tty->print_cr("getisax(2) returned: " PTR32_FORMAT, av);

 #endif

     if (av & AV_SPARC_MUL32)  features |= hardware_mul32_m;

     if (av & AV_SPARC_DIV32)  features |= hardware_div32_m;

     if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m;

     if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m;

     if (av & AV_SPARC_POPC)   features |= hardware_popc_m;

     if (av & AV_SPARC_VIS)    features |= vis1_instructions_m;

     if (av & AV_SPARC_VIS2)   features |= vis2_instructions_m;

     // Next values are not defined before Solaris 10

     // but Solaris 8 is used for jdk6 update builds.

 #ifndef AV_SPARC_ASI_BLK_INIT

 #define AV_SPARC_ASI_BLK_INIT 0x0080  /* ASI_BLK_INIT_xxx ASI */

 #endif

     if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;

 #ifndef AV_SPARC_FMAF

 #define AV_SPARC_FMAF 0x0100        /* Fused Multiply-Add */

 #endif

     if (av & AV_SPARC_FMAF)         features |= fmaf_instructions_m;

 #ifndef AV_SPARC_FMAU

 #define    AV_SPARC_FMAU    0x0200  /* Unfused Multiply-Add */

 #endif

     if (av & AV_SPARC_FMAU)         features |= fmau_instructions_m;

 #ifndef AV_SPARC_VIS3

 #define    AV_SPARC_VIS3    0x0400  /* VIS3 instruction set extensions */

 #endif

     if (av & AV_SPARC_VIS3)         features |= vis3_instructions_m;

   } else {

     // getisax(2) failed, use the old legacy code.

 #ifndef PRODUCT

     if (PrintMiscellaneous && Verbose)

       tty->print_cr("getisax(2) is not supported.");

 #endif

     char   tmp;

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

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

     if (buf != NULL) {

       if (sysinfo(SI_ISALIST, buf, bufsize) == bufsize) {

         // Figure out what kind of sparc we have

         char *sparc_string = strstr(buf, "sparc");

         if (sparc_string != NULL) {              features |= v8_instructions_m;

           if (sparc_string[5] == 'v') {

             if (sparc_string[6] == '8') {

               if (sparc_string[7] == '-') {      features |= hardware_mul32_m;

                                                  features |= hardware_div32_m;

               } else if (sparc_string[7] == 'p') features |= generic_v9_m;

               else                               features |= generic_v8_m;

             } else if (sparc_string[6] == '9')   features |= generic_v9_m;

           }

         }

         // Check for visualization instructions

         char *vis = strstr(buf, "vis");

         if (vis != NULL) {                       features |= vis1_instructions_m;

           if (vis[3] == '2')                     features |= vis2_instructions_m;

         }

       }

       free(buf);

     }

   }

   // Determine the machine type.

   do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);

   {

     // Using kstat to determine the machine type.

     kstat_ctl_t* kc = kstat_open();

     kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);

     const char* implementation = "UNKNOWN";

     if (ksp != NULL) {

       if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {

         kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;

         for (int i = 0; i < ksp->ks_ndata; i++) {

           if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {

 #ifndef KSTAT_DATA_STRING

 #define KSTAT_DATA_STRING   9

 #endif

             if (knm[i].data_type == KSTAT_DATA_CHAR) {

               // VM is running on Solaris 8 which does not have value.str.

               implementation = &(knm[i].value.c[0]);

             } else if (knm[i].data_type == KSTAT_DATA_STRING) {

               // VM is running on Solaris 10.

 #ifndef KSTAT_NAMED_STR_PTR

               // Solaris 8 was used to build VM, define the structure it misses.

               struct str_t {

                 union {

                   char *ptr;     /* NULL-term string */

                   char __pad[8]; /* 64-bit padding */

                 } addr;

                 uint32_t len;    /* # bytes for strlen + '\0' */

               };

 #define KSTAT_NAMED_STR_PTR(knptr) (( (str_t*)&((knptr)->value) )->addr.ptr)

 #endif

               implementation = KSTAT_NAMED_STR_PTR(&knm[i]);

             }

 #ifndef PRODUCT

             if (PrintMiscellaneous && Verbose) {

               tty->print_cr("cpu_info.implementation: %s", implementation);

             }

 #endif

             if (strncmp(implementation, "SPARC64", 7) == 0) {

               features |= sparc64_family_m;

             } else if (strncmp(implementation, "UltraSPARC-T", 12) == 0) {

               features |= T_family_m;

               if (strncmp(implementation, "UltraSPARC-T1", 13) == 0) {

                 features |= T1_model_m;

               }

             }

             break;

           }

         } // for(

       }

     }

     assert(strcmp(implementation, "UNKNOWN") != 0,

            "unknown cpu info (changed kstat interface?)");

     kstat_close(kc);

   }

   return features;

 }