diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/sparc/sparc/machdep.c | 28 |
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); } |