projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 16ca0aea | 1 | /* |
| 16b60ae0 KB |
2 | * Copyright (c) 1989, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 16ca0aea | 4 | * |
| c0567266 KB |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 16ca0aea MK |
32 | */ |
| 33 | ||
| 34 | #if defined(SYSLIBC_SCCS) && !defined(lint) | |
| ad787160 | 35 | .asciz "@(#)sigprocmask.s 8.1 (Berkeley) 6/4/93" |
| 16ca0aea MK |
36 | #endif /* SYSLIBC_SCCS and not lint */ |
| 37 | ||
| 38 | #include "SYS.h" | |
| 39 | ||
| 40 | err: | |
| 41 | jmp cerror | |
| 42 | ||
| 43 | ENTRY(sigprocmask) | |
| 44 | tstl 8(fp) # check new sigset pointer | |
| 45 | bneq 1f # if not null, indirect | |
| 46 | movl $0,8(fp) # null mask pointer: block empty set | |
| 47 | movl $1,4(fp) # SIG_BLOCK | |
| 48 | jbr 2f | |
| 49 | 1: movl *8(fp),8(fp) # indirect to new mask arg | |
| 50 | 2: kcall $SYS_sigprocmask | |
| 51 | jcs err | |
| 52 | tstl 12(fp) # test if old mask requested | |
| 53 | beql out | |
| 54 | movl r0,*12(fp) # store old mask | |
| 55 | out: | |
| 56 | clrl r0 | |
| 57 | ret |