diff options
Diffstat (limited to 'lib/libc/i386/sys/sigprocmask.s')
| -rw-r--r-- | lib/libc/i386/sys/sigprocmask.s | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/libc/i386/sys/sigprocmask.s b/lib/libc/i386/sys/sigprocmask.s new file mode 100644 index 0000000..ef91e80 --- /dev/null +++ b/lib/libc/i386/sys/sigprocmask.s @@ -0,0 +1,64 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * 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. + */ + +#if defined(SYSLIBC_SCCS) && !defined(lint) + .asciz "@(#)sigprocmask.s 8.1 (Berkeley) 6/4/93" +#endif /* SYSLIBC_SCCS and not lint */ + +#include "SYS.h" + +err: + jmp cerror + +ENTRY(sigprocmask) + movl 8(%esp),%ecx # fetch new sigset pointer + cmpl $0,%ecx # check new sigset pointer + jne 1f # if not null, indirect +/* movl $0,8(%esp) # null mask pointer: block empty set */ + movl $1,4(%esp) # SIG_BLOCK + jmp 2f +1: movl (%ecx),%ecx # fetch indirect ... + movl %ecx,8(%esp) # to new mask arg +2: movl $ SYS_sigprocmask , %eax + LCALL(0x7,0) + jb err + movl 12(%esp),%ecx # fetch old mask requested + cmpl $0,%ecx # test if old mask requested + je out + movl %eax,(%ecx) # store old mask +out: + xorl %eax,%eax + ret |
