Return to sigprocmask.s CVS log

Up to [CSRG BSD Unix] / 43BSDReno / lib / libc / i386 / sys

Annotation of 43BSDReno/lib/libc/i386/sys/sigprocmask.s, revision 1.1.1.1

1.1       root        1: /*-
                      2:  * Copyright (c) 1990 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * William Jolitz.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  */
                     22: 
                     23: #if defined(SYSLIBC_SCCS) && !defined(lint)
                     24:        .asciz "@(#)sigprocmask.s       5.1 (Berkeley) 7/1/90"
                     25: #endif /* SYSLIBC_SCCS and not lint */
                     26: 
                     27: #include "SYS.h"
                     28: 
                     29: err:
                     30:        jmp     cerror
                     31: 
                     32: ENTRY(sigprocmask)
                     33:        movl    8(%esp),%ecx            # fetch new sigset pointer
                     34:        cmpl    $0,(%ecx)               # check new sigset pointer
                     35:        jne     1f                      # if not null, indirect
                     36: /*     movl    $0,8(%esp)              # null mask pointer: block empty set */
                     37:        movl    $1,4(%esp)              # SIG_BLOCK
                     38:        jmp     2f
                     39: 1:     movl    (%ecx),%ecx             # fetch indirect  ...
                     40:        movl    %ecx,8(%esp)            # to new mask arg
                     41: 2:     movl    $ SYS_sigprocmask , %eax
                     42:        LCALL(0x7,0)
                     43:        jb      err
                     44:        movl    12(%esp),%ecx           # fetch old mask requested
                     45:        cmpl    $0,%ecx                 # test if old mask requested
                     46:        je      out
                     47:        movl    %eax,(%ecx)             # store old mask
                     48: out:
                     49:        xorl    %eax,%eax
                     50:        ret

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.