/*	$NetBSD: hpux_exec.c,v 1.31 2002/08/02 08:43:09 gmcgarry Exp $	*/

/*-
 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the NetBSD
 *	Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1993, 1994 Christopher G. Demetriou
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *	This product includes software developed by Christopher G. Demetriou.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Glue for exec'ing HP-UX executables and the HP-UX execv() system call.
 * Based on sys/kern/exec_aout.c
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hpux_exec.c,v 1.31 2002/08/02 08:43:09 gmcgarry Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/exec.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/user.h>
#include <sys/vnode.h>
#include <sys/mman.h>
#include <sys/stat.h>

#include <machine/cpu.h>
#include <machine/reg.h>

#include <sys/syscallargs.h>    

#include <compat/hpux/hpux.h>
#include <compat/hpux/hpux_util.h>
#include <compat/hpux/hpux_syscall.h>
#include <compat/hpux/hpux_syscallargs.h>

#include <machine/hpux_machdep.h>

extern struct sysent hpux_sysent[];
extern const char * const hpux_syscallnames[];
extern char sigcode[], esigcode[];
extern int native_to_hpux_errno[];
#ifdef __HAVE_SYSCALL_INTERN
void hpux_syscall_intern __P((struct proc *));
#else
void syscall __P((void));
#endif

const struct emul emul_hpux = {
	"hpux",
	"/emul/hpux",
	0,
	native_to_hpux_errno,
	HPUX_SYS_syscall,
	HPUX_SYS_MAXSYSCALL,
	hpux_sysent,
	hpux_syscallnames,
	hpux_sendsig,
	trapsignal,
	sigcode,
	esigcode,
	hpux_setregs,
	NULL,
	NULL,
	NULL,
#ifdef __HAVE_SYSCALL_INTERN
	hpux_syscall_intern
#else
	syscall
#endif
};

/*
 * The HP-UX execv(2) system call.
 *
 * Just check the alternate emulation path, and pass it on to the NetBSD
 * execve().
 */
int
hpux_sys_execv(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{
	struct hpux_sys_execv_args /* {
		syscallarg(const char *) path;
		syscallarg(char **) argv;
	} */ *uap = v;
	struct sys_execve_args ap;
	caddr_t sg;

	sg = stackgap_init(p, 0);
	CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));

	SCARG(&ap, path) = SCARG(uap, path);
	SCARG(&ap, argp) = SCARG(uap, argp);
	SCARG(&ap, envp) = NULL;

	return sys_execve(p, &ap, retval);
}

int
hpux_sys_execve(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{
	struct hpux_sys_execve_args /* {
		syscallarg(const char *) path;
		syscallarg(char **) argv;
		syscallarg(char **) envp;
	} */ *uap = v;
	struct sys_execve_args ap;
	caddr_t sg;

	sg = stackgap_init(p, 0);
	CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));

	SCARG(&ap, path) = SCARG(uap, path);
	SCARG(&ap, argp) = SCARG(uap, argp);
	SCARG(&ap, envp) = SCARG(uap, envp);

	return sys_execve(p, &ap, retval);
}