Source code of Windows XP (NT5)
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/***** Copyright (C) 1996-97 Intel Corporation. All rights reserved.****** The information and source code contained herein is the exclusive*** property of Intel Corporation and may not be disclosed, examined*** or reproduced in whole or in part without explicit written authorization*** from the company.**/
//++//// Module Name://// setjmpex.s//// Abstract://// This module implements the IA64 specific routine to perform a setjmp.//// N.B. This module has two entry points that provide SAFE and UNSAFE // handling of setjmp.//// Author://// William K. Cheung (wcheung) 27-Jan-1996//// Environment://// Any mode.//// Revision History://// Modified to support mixed ISA.////--
#include "ksia64.h"
.global _setjmpex .type _setjmpex, @function .global _setjmp_common .type _setjmp_common, @function
.sdata .align 8_setjmpexused:: data8 _setjmpex
//++//// int// setjmpex (// IN jmp_buf JumpBuffer// )//// Routine Description://// This function saved the current nonvolatile register state in the// specified jump buffer and returns a function vlaue of zero.//// Arguments://// JumpBuffer (a0) - Supplies the address of a jump buffer to store the// jump information.//// MemoryStackFp (a1) - Supplies the memory stack frame pointer (psp)// of the caller. It's an optional argument.//// Return Value://// A value of zero is returned.////--
NESTED_ENTRY(_setjmpex)
LEAF_SETUP(3, 0, 0, 0)
rUnat = t8 rFpsr = t9 rPsp = a1 rBsp = a2
movl t4 = 0x130324356 // ascii code of "VC20"
mov rUnat = ar.unat mov rFpsr = ar.fpsr add t2 = JbCookie, a0 ;;
st8.nta [t2] = t4, JbUnwindData-JbCookie // save the magic cookie add t3 = JbUnwindData+8, a0 ;;
st8.nta [t2] = rPsp, 8 st8.nta [t3] = rBsp br.sptk.many _setjmp_common ;;
NESTED_EXIT(_setjmpex)
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