ppc/sys/sigreturn.s

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