/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1998, Sun Microsystems, Inc.
* All rights reserved.
* Copyright 2012 Milan Jurik. All rights reserved.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#include <sys/param.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/proc.h>
#include <sys/debug.h>
/*
* Profiling.
*/
int
profil(unsigned short *bufbase, size_t bufsize, ulong_t pcoffset,
uint_t pcscale)
{
struct proc *p = ttoproc(curthread);
if (pcscale == 1)
pcscale = 0;
mutex_enter(&p->p_pflock);
p->p_prof.pr_base = bufbase;
p->p_prof.pr_size = bufsize;
p->p_prof.pr_off = pcoffset;
p->p_prof.pr_scale = pcscale;
/* pcsample and profil are mutually exclusive */
p->p_prof.pr_samples = 0;
mutex_exit(&p->p_pflock);
mutex_enter(&p->p_lock);
set_proc_post_sys(p); /* activate post_syscall profiling code */
mutex_exit(&p->p_lock);
return (0);
}
/*
* PC Sampling
*/
long
pcsample(void *buf, long nsamples)
{
struct proc *p = ttoproc(curthread);
long count = 0;
if (nsamples < 0 ||
((get_udatamodel() != DATAMODEL_NATIVE) && (nsamples > INT32_MAX)))
return (set_errno(EINVAL));
mutex_enter(&p->p_pflock);
p->p_prof.pr_base = buf;
p->p_prof.pr_size = nsamples;
p->p_prof.pr_scale = 1;
count = p->p_prof.pr_samples;
p->p_prof.pr_samples = 0;
mutex_exit(&p->p_pflock);
mutex_enter(&p->p_lock);
set_proc_post_sys(p); /* activate post_syscall profiling code */
mutex_exit(&p->p_lock);
return (count);
}