ppc/sys/_setjmp.h

   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  *      Copyright (c) 1998, Apple Computer Inc. All rights reserved.
  24  *
  25  *      File: _setjmp.h
  26  *
  27  *      Defines for register offsets in the save area.
  28  *
  29  */
  30
  31 /* NOTE: jmp_bufs are only 4-byte aligned.  This means we
  32  * need to pad before the VR and FPR save areas, so that they
  33  * can be naturally aligned in the buffer.  In case a jmp_buf
  34  * is bcopy'd to a different alignment between the setjmp
  35  * and longjmp, we need to save the jmp_buf address in the
  36  * jmp_buf at setjmp time, so we can realign before reloading.
  37  */
  38
  39 #define JMP_r1  0x00
  40 #define JMP_r2  0x04
  41 #define JMP_r13 0x08
  42 #define JMP_r14 0x0c
  43 #define JMP_r15 0x10
  44 #define JMP_r16 0x14
  45 #define JMP_r17 0x18
  46 #define JMP_r18 0x1c
  47 #define JMP_r19 0x20
  48 #define JMP_r20 0x24
  49 #define JMP_r21 0x28
  50 #define JMP_r22 0x2c
  51 #define JMP_r23 0x30
  52 #define JMP_r24 0x34
  53 #define JMP_r25 0x38
  54 #define JMP_r26 0x3c
  55 #define JMP_r27 0x40
  56 #define JMP_r28 0x44
  57 #define JMP_r29 0x48
  58 #define JMP_r30 0x4c
  59 #define JMP_r31 0x50
  60 #define JMP_lr  0x54
  61 #define JMP_cr  0x58
  62 #define JMP_ctr 0x5c
  63 #define JMP_xer 0x60
  64 #define JMP_sig 0x64
  65 #define JMP_SIGFLAG 0x68
  66 #define JMP_flags 0x6c
  67 #define JMP_vrsave 0x70
  68 #define JMP_addr_at_setjmp 0x74
  69 /* 12 bytes padding here */
  70 #define JMP_vr_base_addr 0x84
  71 /* save room for 12 VRs (v20-v31), or 0xC0 bytes */
  72 #define JMP_fp_base_addr 0x144
  73 /* save room for 18 FPRs (f14-f31), or 0x90 bytes */
  74 #define JMP_buf_end 0x1d4
  75