51 lines
1.5 KiB
ArmAsm
51 lines
1.5 KiB
ArmAsm
/*
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* Copyright (c) 1992 Helsinki University of Technology
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* HELSINKI UNIVERSITY OF TECHNOLOGY ALLOWS FREE USE OF THIS SOFTWARE IN
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* ITS "AS IS" CONDITION. HELSINKI UNIVERSITY OF TECHNOLOGY DISCLAIMS ANY
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* LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE
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* USE OF THIS SOFTWARE.
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*/
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/*
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* HISTORY
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* 29-Apr-92 Johannes Helander (jvh) at Helsinki University of Technology
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* Created.
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*
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* $Id: sigprocmask.s,v 1.1.1.1 1993/09/17 18:43:51 phil Exp $
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*/
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/*
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* Note: Has never been tested. Debug before use.
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*/
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#include <sys/syscall.h>
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#include "SYS.h"
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ENTRY(sigprocmask)
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movd S_ARG1, r1 /* fetch new sigset pointer */
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cmpqd 0, r1 /* check new sigset pointer */
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bne L1 /* if not null, indirect */
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/* movqd 0, S_ARG1 /* null mask pointer: block empty set */
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movqd 1, S_ARG0 /* SIG_BLOCK */
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br L2
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L1: movd 0(r1), r1 /* fetch indirect ... */
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movd r1, S_ARG1 /* to new mask arg */
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L2: movd SYS_sigprocmask, r0
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SVC
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bcs cerror
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movd S_ARG2, r1 /* fetch old mask requested */
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cmpqd 0, r1 /* test if old mask requested */
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beq out
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movd r0, 0(r1) /* store old mask */
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out:
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movqd 0, r0
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ret 0
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