Implement compat_13_sys_sigreturn().
This commit is contained in:
thorpej
parent
a3f5b4f0e7
commit
586b0b3d1b
@ -1,4 +1,4 @@
|
||||
# $NetBSD: files.m68k,v 1.22 1998/05/24 19:32:42 is Exp $
|
||||
# $NetBSD: files.m68k,v 1.23 1998/10/01 01:03:56 thorpej Exp $
|
||||
#
|
||||
file arch/m68k/m68k/bcopy.s
|
||||
file arch/m68k/m68k/copy.s
|
||||
@ -16,4 +16,6 @@ file arch/m68k/m68k/process_machdep.c
|
||||
file arch/m68k/m68k/regdump.c
|
||||
file arch/m68k/m68k/sig_machdep.c
|
||||
|
||||
file arch/m68k/m68k/compat_13_machdep.c compat_13
|
||||
|
||||
include "../../../compat/m68k4k/files.m68k4k"
|
||||
|
||||
137
sys/arch/m68k/m68k/compat_13_machdep.c
Normal file
137
sys/arch/m68k/m68k/compat_13_machdep.c
Normal file
@ -0,0 +1,137 @@
|
||||
/* $NetBSD: compat_13_machdep.c,v 1.1 1998/10/01 01:03:56 thorpej Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1988 University of Utah.
|
||||
* Copyright (c) 1982, 1986, 1990, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* the Systems Programming Group of the University of Utah Computer
|
||||
* Science Department.
|
||||
*
|
||||
* 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 University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
|
||||
*
|
||||
* from: Utah Hdr: machdep.c 1.74 92/12/20
|
||||
* from: @(#)machdep.c 8.10 (Berkeley) 4/20/94
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/user.h>
|
||||
#include <sys/signal.h>
|
||||
#include <sys/signalvar.h>
|
||||
|
||||
#include <sys/mount.h>
|
||||
#include <sys/syscallargs.h>
|
||||
|
||||
#include <machine/cpu.h>
|
||||
#include <machine/reg.h>
|
||||
|
||||
extern int fputype;
|
||||
extern short exframesize[];
|
||||
void m68881_restore __P((struct fpframe *));
|
||||
|
||||
/*
|
||||
* System call to cleanup state after a signal
|
||||
* has been taken. Reset signal mask and
|
||||
* stack state from context left by sendsig (above).
|
||||
* Return to previous pc and psl as specified by
|
||||
* context left by sendsig. Check carefully to
|
||||
* make sure that the user has not modified the
|
||||
* psl to gain improper priviledges or to cause
|
||||
* a machine fault.
|
||||
*/
|
||||
int
|
||||
compat_13_sys_sigreturn(p, v, retval)
|
||||
struct proc *p;
|
||||
void *v;
|
||||
register_t *retval;
|
||||
{
|
||||
struct compat_13_sys_sigreturn_args /* {
|
||||
syscallarg(struct sigcontext13 *) sigcntxp;
|
||||
} */ *uap = v;
|
||||
struct sigcontext13 *scp;
|
||||
struct frame *frame;
|
||||
struct sigcontext13 tsigc;
|
||||
sigset_t mask;
|
||||
|
||||
/*
|
||||
* The trampoline code hands us the context.
|
||||
* It is unsafe to keep track of it ourselves, in the event that a
|
||||
* program jumps out of a signal handler.
|
||||
*/
|
||||
scp = SCARG(uap, sigcntxp);
|
||||
if ((int)scp & 1)
|
||||
return (EINVAL);
|
||||
|
||||
if (copyin(scp, &tsigc, sizeof(tsigc)) != 0)
|
||||
return (EFAULT);
|
||||
scp = &tsigc;
|
||||
|
||||
/* Make sure the user isn't pulling a fast one on us! */
|
||||
if ((scp->sc_ps & (PSL_MBZ|PSL_IPL|PSL_S)) != 0)
|
||||
return (EINVAL);
|
||||
|
||||
/* Restore register context. */
|
||||
frame = (struct frame *) p->p_md.md_regs;
|
||||
|
||||
/*
|
||||
* We only support restoring the sigcontext13 in this call.
|
||||
* We are not called from the sigcode (per sendsig()), so
|
||||
* we will not have a sigstate to restore.
|
||||
*/
|
||||
if (scp->sc_ap != 0)
|
||||
return (EINVAL);
|
||||
|
||||
/*
|
||||
* Restore the user supplied information.
|
||||
* This should be at the last so that the error (EINVAL)
|
||||
* is reported to the sigreturn caller, not to the
|
||||
* jump destination.
|
||||
*/
|
||||
|
||||
frame->f_regs[SP] = scp->sc_sp;
|
||||
frame->f_regs[A6] = scp->sc_fp;
|
||||
frame->f_pc = scp->sc_pc;
|
||||
frame->f_sr = scp->sc_ps;
|
||||
|
||||
/* Restore signal stack. */
|
||||
if (scp->sc_onstack & SS_ONSTACK)
|
||||
p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK;
|
||||
else
|
||||
p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK;
|
||||
|
||||
/* Restore signal mask. */
|
||||
native_sigset13_to_sigset(&scp->sc_mask, &mask);
|
||||
(void) sigprocmask1(p, SIG_SETMASK, &mask, 0);
|
||||
|
||||
return (EJUSTRETURN);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user