sys.subproj/ppc.subproj/_longjmp.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
  23 /*      void _longjmp(jmp_buf env, int val); */
  24
  25 /*      int _longjmp(jmp_buf env); */
  26 /*
  27  * Copyright (c) 1998 Apple Computer, Inc. All rights reserved.
  28  *
  29  *      File: sys/ppc/_longjmp.s
  30  *
  31  *      Implements _longjmp()
  32  *
  33  *      History:
  34  *      8 September 1998        Matt Watson (mwatson@apple.com)
  35  *              Created. Derived from longjmp.s
  36  */
  37 #include "SYS.h"
  38 #include <architecture/ppc/asm_help.h>
  39 #include "_setjmp.h"
  40
  41 LEAF(__longjmp)
  42         lwz r31, JMP_r31(r3)
  43         /* r1, r14-r30 */
  44         lwz r1,  JMP_r1 (r3)
  45         lwz r2,  JMP_r2 (r3)
  46         lwz r13, JMP_r13(r3)
  47         lwz r14, JMP_r14(r3)
  48         lwz r15, JMP_r15(r3)
  49         lwz r16, JMP_r16(r3)
  50         lwz r17, JMP_r17(r3)
  51         lwz r18, JMP_r18(r3)
  52         lwz r19, JMP_r19(r3)
  53         lwz r20, JMP_r20(r3)
  54         lwz r21, JMP_r21(r3)
  55         lwz r22, JMP_r22(r3)
  56         lwz r23, JMP_r23(r3)
  57         lwz r24, JMP_r24(r3)
  58         lwz r25, JMP_r25(r3)
  59         lwz r26, JMP_r26(r3)
  60         lwz r27, JMP_r27(r3)
  61         lwz r28, JMP_r28(r3)
  62         lwz r29, JMP_r29(r3)
  63         lwz r30, JMP_r30(r3)
  64         lwz r0, JMP_cr(r3)
  65         mtcrf 0xff,r0
  66         lwz r0, JMP_lr(r3)
  67         mtlr r0
  68         lwz r0, JMP_ctr(r3)                     ; XXX   ctr is volatile
  69         mtctr r0
  70         lwz r0, JMP_xer(r3)                     ; XXX   xer is volatile
  71         mtxer r0
  72         mr. r3, r4
  73         bnelr
  74         li  r3, 1
  75         blr
  76