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Annotation of 43BSDReno/lib/libc/hp300/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:  * the Systems Programming Group of the University of Utah Computer
                      7:  * Science Department.
                      8:  *
                      9:  * Redistribution and use in source and binary forms are permitted provided
                     10:  * that: (1) source distributions retain this entire copyright notice and
                     11:  * comment, and (2) distributions including binaries display the following
                     12:  * acknowledgement:  ``This product includes software developed by the
                     13:  * University of California, Berkeley and its contributors'' in the
                     14:  * documentation or other materials provided with the distribution and in
                     15:  * all advertising materials mentioning features or use of this software.
                     16:  * Neither the name of the University nor the names of its contributors may
                     17:  * be used to endorse or promote products derived from this software without
                     18:  * specific prior written permission.
                     19:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     20:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     21:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     22:  */
                     23: 
                     24: #if defined(LIBC_SCCS) && !defined(lint)
                     25:        .asciz "@(#)sigprocmask.s       5.2 (Berkeley) 6/6/90"
                     26: #endif /* LIBC_SCCS and not lint */
                     27: 
                     28: #include "SYS.h"
                     29: 
                     30:        .even
                     31: err:
                     32:        jmp     cerror
                     33: 
                     34: ENTRY(sigprocmask)
                     35:        tstl    sp@(8)                  /* check new sigset pointer */
                     36:        jne     gotptr                  /* if not null, indirect */
                     37: /*     movl    #0,sp@(8)               /* null mask pointer: block empty set */
                     38:        movl    #1,sp@(4)               /* SIG_BLOCK */
                     39:        jra     doit
                     40: gotptr:
                     41:        movl    sp@(8),a0
                     42:        movl    a0@,sp@(8)              /* indirect to new mask arg */
                     43: doit:
                     44:        movl    #SYS_sigprocmask,d0
                     45:        trap    #0
                     46:        jcs     err
                     47:        tstl    sp@(12)                 /* test if old mask requested */
                     48:        jeq     out
                     49:        movl    sp@(12),a0
                     50:        movl    d0,a0@                  /* store old mask */
                     51: out:
                     52:        clrl    d0
                     53:        rts

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