ppc/sys/_setjmp.h

   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 /*
  26  *      Copyright (c) 1998, Apple Computer Inc. All rights reserved.
  27  *
  28  *      File: _setjmp.h
  29  *
  30  *      Defines for register offsets in the save area.
  31  *
  32  */
  33
  34 /* NOTE: jmp_bufs are only 4-byte aligned.  This means we
  35  * need to pad before the VR and FPR save areas, so that they
  36  * can be naturally aligned in the buffer.  In case a jmp_buf
  37  * is bcopy'd to a different alignment between the setjmp
  38  * and longjmp, we need to save the jmp_buf address in the
  39  * jmp_buf at setjmp time, so we can realign before reloading.
  40  */
  41
  42 #define JMP_r1  0x00
  43 #define JMP_r2  0x04
  44 #define JMP_r13 0x08
  45 #define JMP_r14 0x0c
  46 #define JMP_r15 0x10
  47 #define JMP_r16 0x14
  48 #define JMP_r17 0x18
  49 #define JMP_r18 0x1c
  50 #define JMP_r19 0x20
  51 #define JMP_r20 0x24
  52 #define JMP_r21 0x28
  53 #define JMP_r22 0x2c
  54 #define JMP_r23 0x30
  55 #define JMP_r24 0x34
  56 #define JMP_r25 0x38
  57 #define JMP_r26 0x3c
  58 #define JMP_r27 0x40
  59 #define JMP_r28 0x44
  60 #define JMP_r29 0x48
  61 #define JMP_r30 0x4c
  62 #define JMP_r31 0x50
  63 #define JMP_lr  0x54
  64 #define JMP_cr  0x58
  65 #define JMP_ctr 0x5c
  66 #define JMP_xer 0x60
  67 #define JMP_sig 0x64
  68 #define JMP_SIGFLAG 0x68
  69 #define JMP_flags 0x6c
  70 #define JMP_vrsave 0x70
  71 #define JMP_addr_at_setjmp 0x74
  72 /* 12 bytes padding here */
  73 #define JMP_vr_base_addr 0x84
  74 /* save room for 12 VRs (v20-v31), or 0xC0 bytes */
  75 #define JMP_fp_base_addr 0x144
  76 /* save room for 18 FPRs (f14-f31), or 0x90 bytes */
  77 #define JMP_buf_end 0x1d4
  78