sys.subproj/ppc.subproj/sigreturn.s

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved.
  23  *
  24  *      File:   libc/m98k/sys/sigreturn.s
  25  *
  26  *      The sigreturn() system call.
  27  *
  28  *      The M98K sigcontext structure is more robust than older cousins.
  29  *      This routine is responsible for restoring register state
  30  *      based on the setting of sc_regs_saved before trapping into the
  31  *      kernel.  See <bsd/m98k/signal.h>
  32  *
  33  * HISTORY
  34  * 18-Nov-92  Ben Fathi (benf@next.com)
  35  *      Ported to m98k.
  36  *
  37  * 13-Jan-92  Peter King (king@next.com)
  38  *      Created.
  39  */
  40
  41 #import "assym.h"
  42 #import "SYS.h"
  43
  44 /*
  45  * r3 = sigcontext pointer
  46  */
  47
  48 LEAF(_sigreturn)
  49
  50         /* Now call the kernel routine to restore the rest */
  51
  52         SYSCALL_NONAME(sigreturn, 1)
  53         blr
  54 END(_sigreturn)