/*
 * 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) 1997-2000 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include <sys/isa_defs.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include "libproc.h"

/*
 * getitimer() system call -- executed by victim process.
 */
int
pr_getitimer(struct ps_prochandle *Pr, int which, struct itimerval *itv)
{
        sysret_t rval;          /* return value from getitimer() */
        argdes_t argd[2];       /* arg descriptors for getitimer() */
        argdes_t *adp;
        int error;
#ifdef _LP64
        int victim32 = (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32);
        struct itimerval32 itimerval32;
#endif

        if (Pr == NULL)         /* no victim process */
                return (getitimer(which, itv));

        adp = &argd[0];         /* which argument */
        adp->arg_value = which;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_object = NULL;
        adp->arg_size = 0;

        adp++;                  /* itv argument */
        adp->arg_value = 0;
        adp->arg_type = AT_BYREF;
        adp->arg_inout = AI_OUTPUT;
#ifdef _LP64
        if (victim32) {
                adp->arg_object = &itimerval32;
                adp->arg_size = sizeof (itimerval32);
        } else {
                adp->arg_object = itv;
                adp->arg_size = sizeof (*itv);
        }
#else   /* _LP64 */
        adp->arg_object = itv;
        adp->arg_size = sizeof (*itv);
#endif  /* _LP64 */

        error = Psyscall(Pr, &rval, SYS_getitimer, 2, &argd[0]);

        if (error) {
                errno = (error > 0)? error : ENOSYS;
                return (-1);
        }
#ifdef _LP64
        if (victim32) {
                ITIMERVAL32_TO_ITIMERVAL(itv, &itimerval32);
        }
#endif  /* _LP64 */
        return (rval.sys_rval1);
}

/*
 * setitimer() system call -- executed by victim process.
 */
int
pr_setitimer(struct ps_prochandle *Pr,
        int which, const struct itimerval *itv, struct itimerval *oitv)
{
        sysret_t rval;          /* return value from setitimer() */
        argdes_t argd[3];       /* arg descriptors for setitimer() */
        argdes_t *adp;
        int error;
#ifdef _LP64
        int victim32 = (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32);
        struct itimerval32 itimerval32;
        struct itimerval32 oitimerval32;
#endif  /* _LP64 */

        if (Pr == NULL)         /* no victim process */
                return (setitimer(which, (struct itimerval *)itv, oitv));

        adp = &argd[0];         /* which argument */
        adp->arg_value = which;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_object = NULL;
        adp->arg_size = 0;

        adp++;                  /* itv argument */
        adp->arg_value = 0;
        adp->arg_type = AT_BYREF;
        adp->arg_inout = AI_INPUT;
#ifdef _LP64
        if (victim32) {
                ITIMERVAL_TO_ITIMERVAL32(&itimerval32, itv);
                adp->arg_object = (void *)&itimerval32;
                adp->arg_size = sizeof (itimerval32);
        } else {
                adp->arg_object = (void *)itv;
                adp->arg_size = sizeof (*itv);
        }
#else   /* _LP64 */
        adp->arg_object = (void *)itv;
        adp->arg_size = sizeof (*itv);
#endif  /* _LP64 */

        adp++;                  /* oitv argument */
        adp->arg_value = 0;
        if (oitv == NULL) {
                adp->arg_type = AT_BYVAL;
                adp->arg_inout = AI_INPUT;
                adp->arg_object = NULL;
                adp->arg_size = 0;
        } else {
                adp->arg_type = AT_BYREF;
                adp->arg_inout = AI_OUTPUT;
#ifdef _LP64
                if (victim32) {
                        adp->arg_object = (void *)&oitimerval32;
                        adp->arg_size = sizeof (oitimerval32);
                } else {
                        adp->arg_object = oitv;
                        adp->arg_size = sizeof (*oitv);
                }
#else   /* _LP64 */
                adp->arg_object = oitv;
                adp->arg_size = sizeof (*oitv);
#endif  /* _LP64 */
        }

        error = Psyscall(Pr, &rval, SYS_setitimer, 3, &argd[0]);

        if (error) {
                errno = (error > 0)? error : ENOSYS;
                return (-1);
        }
#ifdef _LP64
        if (victim32 && oitv != NULL) {
                ITIMERVAL32_TO_ITIMERVAL(oitv, &oitimerval32);
        }
#endif  /* _LP64 */
        return (rval.sys_rval1);
}