/*
* Copyright (c) 2006, 2011, 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;
#ifndef AV_SPARC_CBCOND
#define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */
#endif
if (av & AV_SPARC_CBCOND) features |= cbcond_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
// Convert to UPPER case before compare.
char* impl = strdup(implementation);
for (int i = 0; impl[i] != 0; i++)
impl[i] = (char)toupper((uint)impl[i]);
if (strstr(impl, "SPARC64") != NULL) {
features |= sparc64_family_m;
} else if (strstr(impl, "SPARC-M") != NULL) {
// M-series SPARC is based on T-series.
features |= (M_family_m | T_family_m);
} else if (strstr(impl, "SPARC-T") != NULL) {
features |= T_family_m;
if (strstr(impl, "SPARC-T1") != NULL) {
features |= T1_model_m;
}
} else {
if (strstr(impl, "SPARC") == NULL) {
#ifndef PRODUCT
// kstat on Solaris 8 virtual machines (branded zones)
// returns "(unsupported)" implementation.
warning("kstat cpu_info implementation = '%s', should contain SPARC", impl);
#endif
implementation = "SPARC";
}
}
free((void*)impl);
break;
}
} // for(
}
}
assert(strcmp(implementation, "UNKNOWN") != 0,
"unknown cpu info (changed kstat interface?)");
kstat_close(kc);
}
return features;
}