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src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp@a61af66fc99e (annotated)

src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp

Sat, 01 Dec 2007 00:00:00 +0000

author

duke

date

Sat, 01 Dec 2007 00:00:00 +0000

changeset 435

a61af66fc99e

child 1076

6af0a709d52b

permissions

-rw-r--r--

Initial load

duke@435	1	/*
duke@435	2	* Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_vm_version_solaris_sparc.cpp.incl"
duke@435	27
duke@435	28	# include <sys/systeminfo.h>
duke@435	29
duke@435	30	int VM_Version::platform_features(int features) {
duke@435	31	// We determine what sort of hardware we have via sysinfo(SI_ISALIST, ...).
duke@435	32	// This isn't the best of all possible ways because there's not enough
duke@435	33	// detail in the isa list it returns, but it's a bit less arcane than
duke@435	34	// generating assembly code and an illegal instruction handler. We used
duke@435	35	// to generate a getpsr trap, but that's even more arcane.
duke@435	36	//
duke@435	37	// Another possibility would be to use sysinfo(SI_PLATFORM, ...), but
duke@435	38	// that would require more knowledge here than is wise.
duke@435	39
duke@435	40	// isalist spec via 'man isalist' as of 01-Aug-2001
duke@435	41
duke@435	42	char tmp;
duke@435	43	size_t bufsize = sysinfo(SI_ISALIST, &tmp, 1);
duke@435	44	char* buf = (char*)malloc(bufsize);
duke@435	45
duke@435	46	if (buf != NULL) {
duke@435	47	if (sysinfo(SI_ISALIST, buf, bufsize) == bufsize) {
duke@435	48	// Figure out what kind of sparc we have
duke@435	49	char *sparc_string = strstr(buf, "sparc");
duke@435	50	if (sparc_string != NULL) { features |= v8_instructions_m;
duke@435	51	if (sparc_string[5] == 'v') {
duke@435	52	if (sparc_string[6] == '8') {
duke@435	53	if (sparc_string[7] == '-') features |= hardware_int_muldiv_m;
duke@435	54	else if (sparc_string[7] == 'p') features |= generic_v9_m;
duke@435	55	else features |= generic_v8_m;
duke@435	56	} else if (sparc_string[6] == '9') features |= generic_v9_m;
duke@435	57	}
duke@435	58	}
duke@435	59
duke@435	60	// Check for visualization instructions
duke@435	61	char *vis = strstr(buf, "vis");
duke@435	62	if (vis != NULL) { features |= vis1_instructions_m;
duke@435	63	if (vis[3] == '2') features |= vis2_instructions_m;
duke@435	64	}
duke@435	65	}
duke@435	66	free(buf);
duke@435	67	}
duke@435	68
duke@435	69	bufsize = sysinfo(SI_MACHINE, &tmp, 1);
duke@435	70	buf = (char*)malloc(bufsize);
duke@435	71
duke@435	72	if (buf != NULL) {
duke@435	73	if (sysinfo(SI_MACHINE, buf, bufsize) == bufsize) {
duke@435	74	if (strstr(buf, "sun4v") != NULL) {
duke@435	75	features |= sun4v_m;
duke@435	76	}
duke@435	77	}
duke@435	78	free(buf);
duke@435	79	}
duke@435	80
duke@435	81	return features;
duke@435	82	}