/* $OpenBSD: setjmp.S,v 1.8 2003/10/15 02:41:50 drahn Exp $ */
/* kernel version of this file, does not have signal goop */
/* int setjmp(jmp_buf env) */
/*
* Copyright (c) 1996 Dale Rahn.
* All rights reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <machine/asm.h>
#define JMP_r1 0x04
#define JMP_r14 0x08
#define JMP_r15 0x0c
#define JMP_r16 0x10
#define JMP_r17 0x14
#define JMP_r18 0x18
#define JMP_r19 0x1c
#define JMP_r20 0x20
#define JMP_r21 0x24
#define JMP_r22 0x28
#define JMP_r23 0x2c
#define JMP_r24 0x30
#define JMP_r25 0x34
#define JMP_r26 0x38
#define JMP_r27 0x3c
#define JMP_r28 0x40
#define JMP_r29 0x44
#define JMP_r30 0x48
#define JMP_r31 0x4c
#define JMP_lr 0x50
#define JMP_cr 0x54
#define JMP_ctr 0x58
#define JMP_xer 0x5c
#define JMP_sig 0x60
ENTRY(_C_LABEL(setjmp))
stw %r31, JMP_r31(%r3)
/* r1, r14-r30 */
stw %r1, JMP_r1 (%r3)
stw %r14, JMP_r14(%r3)
stw %r15, JMP_r15(%r3)
stw %r16, JMP_r16(%r3)
stw %r17, JMP_r17(%r3)
stw %r18, JMP_r18(%r3)
stw %r19, JMP_r19(%r3)
stw %r20, JMP_r20(%r3)
stw %r21, JMP_r21(%r3)
stw %r22, JMP_r22(%r3)
stw %r23, JMP_r23(%r3)
stw %r24, JMP_r24(%r3)
stw %r25, JMP_r25(%r3)
stw %r26, JMP_r26(%r3)
stw %r27, JMP_r27(%r3)
stw %r28, JMP_r28(%r3)
stw %r29, JMP_r29(%r3)
stw %r30, JMP_r30(%r3)
/* cr, lr, ctr, xer */
mfcr %r0
stw %r0, JMP_cr(%r3)
mflr %r0
stw %r0, JMP_lr(%r3)
mfctr %r0
stw %r0, JMP_ctr(%r3)
mfxer %r0
stw %r0, JMP_xer(%r3)
/* f14-f31, fpscr */
li %r3, 0
blr
ENTRY(_C_LABEL(longjmp))
lwz %r31, JMP_r31(%r3)
/* r1, r14-r30 */
lwz %r1, JMP_r1 (%r3)
lwz %r14, JMP_r14(%r3)
lwz %r15, JMP_r15(%r3)
lwz %r16, JMP_r16(%r3)
lwz %r17, JMP_r17(%r3)
lwz %r18, JMP_r18(%r3)
lwz %r19, JMP_r19(%r3)
lwz %r20, JMP_r20(%r3)
lwz %r21, JMP_r21(%r3)
lwz %r22, JMP_r22(%r3)
lwz %r23, JMP_r23(%r3)
lwz %r24, JMP_r24(%r3)
lwz %r25, JMP_r25(%r3)
lwz %r26, JMP_r26(%r3)
lwz %r27, JMP_r27(%r3)
lwz %r28, JMP_r28(%r3)
lwz %r29, JMP_r29(%r3)
lwz %r30, JMP_r30(%r3)
/* cr, lr, ctr, xer */
lwz %r0, JMP_cr(%r3)
mtcr %r0
lwz %r0, JMP_lr(%r3)
mtlr %r0
lwz %r0, JMP_ctr(%r3)
mtctr %r0
lwz %r0, JMP_xer(%r3)
mtxer %r0
/* f14-f31, fpscr */
mr %r3, %r4
blr