/*      $NetBSD: compat_sigprocmask13.S,v 1.2 2011/01/15 07:31:13 matt Exp $    */

#include "SYS.h"
#include "assym.h"

#if defined(LIBC_SCCS)
__RCSID("$NetBSD: compat_sigprocmask13.S,v 1.2 2011/01/15 07:31:13 matt Exp $")
#endif

WARN_REFERENCES(sigprocmask, \
    "warning: reference to compatibility sigprocmask(); include <signal.h> for correct reference")

/*
 * sigprocmask(int how, sigset_t *set, sigset_t *oset)
 */
ENTRY(sigprocmask)
        or.     %r4,%r4,%r4     # set == NULL?
        li      %r6,SIG_BLOCK
        beq     1f
        lwz     %r4,0(%r4)      # if not, replace it in r4 with *set
        mr      %r6,%r3
1:
        mr      %r3,%r6         # ... using sigprocmask(SIG_BLOCK)
        _DOSYSCALL(compat_13_sigprocmask13)
        bso     3f
        or.     %r5,%r5,%r5     # check to see of oset requested
        beq     2f              # if oset != NULL,
        stw     %r3,0(%r5)      #    *oset = oldmask
2:
        li      %r3,0
        blr                     # in any case, return 0
3:
        b       _C_LABEL(__cerror)
END(sigprocmask)