ppc/sys/sigreturn.s

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved.
  26  *
  27  *      File:   libc/m98k/sys/sigreturn.s
  28  *
  29  *      The sigreturn() system call.
  30  *
  31  *      The M98K sigcontext structure is more robust than older cousins.
  32  *      This routine is responsible for restoring register state
  33  *      based on the setting of sc_regs_saved before trapping into the
  34  *      kernel.  See <bsd/m98k/signal.h>
  35  *
  36  * HISTORY
  37  * 18-Nov-92  Ben Fathi (benf@next.com)
  38  *      Ported to m98k.
  39  *
  40  * 13-Jan-92  Peter King (king@next.com)
  41  *      Created.
  42  */
  43
  44 #import "assym.h"
  45 #import "SYS.h"
  46
  47 /*
  48  * r3 = sigcontext pointer
  49  */
  50
  51 LEAF(_sigreturn)
  52
  53         /* Now call the kernel routine to restore the rest */
  54
  55         SYSCALL_NONAME(sigreturn, 1)
  56         blr
  57 END(_sigreturn)