/*
* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* The contents of this file constitute Original Code as defined in and
* are subject to the Apple Public Source License Version 1.1 (the
* "License"). You may not use this file except in compliance with the
* License. Please obtain a copy of the License at
* http://www.apple.com/publicsource and read it before using this file.
*
* This Original Code and all software distributed under the License are
* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
* License for the specific language governing rights and limitations
* under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/* int _setjmp(jmp_buf env) * Copyright (c) 1998 Apple Computer, Inc. All rights reserved.
*
* File: sys/ppc/_setjmp.s
*
* Implements _setjmp()
*
* History:
* 8 September 1998 Matt Watson (mwatson@apple.com)
* Created. Derived from setjmp.s
*/
#include <architecture/ppc/asm_help.h>
#include "_setjmp.h"
#define VRSave 256
/* special flag bit definitions copied from /osfmk/ppc/thread_act.h */
#define floatUsedbit 1
#define vectorUsedbit 2
#define FlagsFastTrap 0x7FF3
LEAF(__setjmp)
stw r31, JMP_r31(r3)
/* r1, r2, r13-r30 */
stw r1, JMP_r1(r3)
stw r2, JMP_r2(r3)
stw r13, JMP_r13(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)
mfcr r0
stw r23, JMP_r23(r3)
stw r24, JMP_r24(r3)
mflr r5
stw r25, JMP_r25(r3)
stw r26, JMP_r26(r3)
mfctr r6 stw r28, JMP_r28(r3)
mfxer r7 stw r30, JMP_r30(r3)
stw r0, JMP_cr(r3)
stw r5, JMP_lr(r3)
stw r6, JMP_ctr(r3)
stw r7, JMP_xer(r3)
mr r31,r3 sc rlwinm. r5,r3,0,vectorUsedbit,vectorUsedbit
cmpwi cr1,r4,0 stw r31,JMP_addr_at_setjmp(r31)
mr r3,r31 beq LSaveFPRsIfNecessary mfspr r4,VRSave
andi. r0,r4,0xFFF beq LSaveFPRsIfNecessary stvx v20,0,r6
li r4,16*1
stvx v21,r4,r6
li r4,16*2
stvx v22,r4,r6
li r4,16*3
stvx v23,r4,r6
li r4,16*4
stvx v24,r4,r6
li r4,16*5
stvx v25,r4,r6
li r4,16*6
stvx v26,r4,r6
li r4,16*7
stvx v27,r4,r6
li r4,16*8
stvx v28,r4,r6
li r4,16*9
stvx v29,r4,r6
li r4,16*10
stvx v30,r4,r6
li r4,16*11
stvx v31,r4,r6
LSaveFPRsIfNecessary:
beq cr1,LExit rlwinm r6,r6,0,0,27 stfd f15,1*8(r6)
stfd f16,2*8(r6)
stfd f17,3*8(r6)
stfd f18,4*8(r6)
stfd f19,5*8(r6)
stfd f20,6*8(r6)
stfd f21,7*8(r6)
stfd f22,8*8(r6)
stfd f23,9*8(r6)
stfd f24,10*8(r6)
stfd f25,11*8(r6)
stfd f26,12*8(r6)
stfd f27,13*8(r6)
stfd f28,14*8(r6)
stfd f29,15*8(r6)
stfd f30,16*8(r6)
stfd f31,17*8(r6)
LExit:
li r3, 0
blr