minix/lib/libc/compat/arch/powerpc/sys/compat_sigprocmask13.S

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/* $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)