summaryrefslogtreecommitdiff
path: root/sys/arch
diff options
context:
space:
mode:
Diffstat (limited to 'sys/arch')
-rw-r--r--sys/arch/sparc/sparc/machdep.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/sys/arch/sparc/sparc/machdep.c b/sys/arch/sparc/sparc/machdep.c
index c373ec66c75..fdc0c9b6ac0 100644
--- a/sys/arch/sparc/sparc/machdep.c
+++ b/sys/arch/sparc/sparc/machdep.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: machdep.c,v 1.86 2002/10/24 19:37:00 fgsch Exp $ */
+/* $OpenBSD: machdep.c,v 1.87 2002/11/07 04:39:14 art Exp $ */
/* $NetBSD: machdep.c,v 1.85 1997/09/12 08:55:02 pk Exp $ */
/*
@@ -650,8 +650,9 @@ sys_sigreturn(p, v, retval)
struct sys_sigreturn_args /* {
syscallarg(struct sigcontext *) sigcntxp;
} */ *uap = v;
- struct sigcontext *scp;
+ struct sigcontext ksc;
struct trapframe *tf;
+ int error;
/* First ensure consistent stack state (see sendsig). */
write_user_windows();
@@ -662,29 +663,28 @@ sys_sigreturn(p, v, retval)
printf("sigreturn: %s[%d], sigcntxp %p\n",
p->p_comm, p->p_pid, SCARG(uap, sigcntxp));
#endif
- scp = SCARG(uap, sigcntxp);
- if ((int)scp & 3 || uvm_useracc((caddr_t)scp, sizeof *scp, B_WRITE) == 0)
- return (EINVAL);
+ if ((error = copyin(SCARG(uap, sigcntxp), &ksc, sizeof(ksc))) != 0)
+ return (error);
tf = p->p_md.md_tf;
/*
* Only the icc bits in the psr are used, so it need not be
* verified. pc and npc must be multiples of 4. This is all
* that is required; if it holds, just do it.
*/
- if (((scp->sc_pc | scp->sc_npc) & 3) != 0)
+ if (((ksc.sc_pc | ksc.sc_npc) & 3) != 0)
return (EINVAL);
/* take only psr ICC field */
- tf->tf_psr = (tf->tf_psr & ~PSR_ICC) | (scp->sc_psr & PSR_ICC);
- tf->tf_pc = scp->sc_pc;
- tf->tf_npc = scp->sc_npc;
- tf->tf_global[1] = scp->sc_g1;
- tf->tf_out[0] = scp->sc_o0;
- tf->tf_out[6] = scp->sc_sp;
- if (scp->sc_onstack & 1)
+ tf->tf_psr = (tf->tf_psr & ~PSR_ICC) | (ksc.sc_psr & PSR_ICC);
+ tf->tf_pc = ksc.sc_pc;
+ tf->tf_npc = ksc.sc_npc;
+ tf->tf_global[1] = ksc.sc_g1;
+ tf->tf_out[0] = ksc.sc_o0;
+ tf->tf_out[6] = ksc.sc_sp;
+ if (ksc.sc_onstack & 1)
p->p_sigacts->ps_sigstk.ss_flags |= SS_ONSTACK;
else
p->p_sigacts->ps_sigstk.ss_flags &= ~SS_ONSTACK;
- p->p_sigmask = scp->sc_mask & ~sigcantmask;
+ p->p_sigmask = ksc.sc_mask & ~sigcantmask;
return (EJUSTRETURN);
}