src/setjmp/arm/_longjmp.s

   1 /*
   2  * Copyright (c) 1999-2018 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
  24 /*
  25  * Copyright (c) 1998-2008 Apple Inc. All rights reserved.
  26  *
  27  *      Implements _longjmp()
  28  *
  29  */
  30
  31 #include <architecture/arm/asm_help.h>
  32 #include "_setjmp.h"
  33 #include <arm/arch.h>
  34 #include <os/tsd.h>
  35
  36 /*      int _longjmp(jmp_buf env, int val); */
  37
  38 ENTRY_POINT(__longjmp)
  39         movs    r12, r1
  40         ldmia   r0!, { r1-r6, r8, r10-r11 }
  41         vldmia  r0, { d8-d15 }
  42         movs    r0, r12
  43         moveq   r0, #1
  44         _OS_PTR_MUNGE_TOKEN(r12, r12)
  45         _OS_PTR_UNMUNGE(r7, r1, r12) // fp
  46         _OS_PTR_UNMUNGE(lr, r2, r12)
  47         _OS_PTR_UNMUNGE(sp, r3, r12)
  48         bx              lr