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/* This is file is a merger of SETJMP.S and LONGJMP.S */
/*
* This file was modified to use the __USER_LABEL_PREFIX__ and
* __REGISTER_PREFIX__ macros defined by later versions of GNU cpp by
* Joel Sherrill (joel@OARcorp.com)
*
** Copyright (C) 1991 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
**
** This file is distributed under the terms listed in the document
** "copying.dj", available from DJ Delorie at the address above.
** A copy of "copying.dj" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.dj".
**
** This file is distributed WITHOUT ANY WARRANTY; without even the implied
** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
/*
** jmp_buf:
** eax ebx ecx edx esi edi ebp esp eip
** 0 4 8 12 16 20 24 28 32
*/
/* These are predefined by new versions of GNU cpp. */
#ifndef __USER_LABEL_PREFIX__
#define __USER_LABEL_PREFIX__ _
#endif
/***************************** TEMPORARY ******************************
*
* It appears that the i386-coff configuration of gcc 2.6.2 does not
* do the __REGISTER_PREFIX__ correctly. Fix this when it does.
**********************************************************************/
#define __REGISTER_PREFIX__ %
#ifndef __REGISTER_PREFIX__
#define __REGISTER_PREFIX__
#endif
/* ANSI concatenation macros. */
#define CONCAT1(a, b) CONCAT2(a, b)
#define CONCAT2(a, b) a ## b
/* Use the right prefix for global labels. */
#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
/* Use the right prefix for registers. */
#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
#define eax REG (eax)
#define ebx REG (ebx)
#define ecx REG (ecx)
#define edx REG (edx)
#define esi REG (esi)
#define edi REG (edi)
#define ebp REG (ebp)
#define esp REG (esp)
#define ax REG (ax)
#define bx REG (bx)
#define cx REG (cx)
#define dx REG (dx)
#define ah REG (ah)
#define bh REG (bh)
#define ch REG (ch)
#define dh REG (dh)
#define al REG (al)
#define bl REG (bl)
#define cl REG (cl)
#define dl REG (dl)
.global SYM (setjmp)
.global SYM (longjmp)
SYM (setjmp):
pushl ebp
movl esp,ebp
pushl edi
movl 8 (ebp),edi
movl eax,0 (edi)
movl ebx,4 (edi)
movl ecx,8 (edi)
movl edx,12 (edi)
movl esi,16 (edi)
movl -4 (ebp),eax
movl eax,20 (edi)
movl 0 (ebp),eax
movl eax,24 (edi)
movl esp,eax
addl $12,eax
movl eax,28 (edi)
movl 4 (ebp),eax
movl eax,32 (edi)
popl edi
movl $0,eax
leave
ret
SYM (longjmp):
pushl ebp
movl esp,ebp
movl 8(ebp),edi /* get jmp_buf */
movl 12(ebp),eax /* store retval in j->eax */
movl eax,0(edi)
movl 24(edi),ebp
cli
movl 28(edi),esp
pushl 32(edi)
movl 0(edi),eax
movl 4(edi),ebx
movl 8(edi),ecx
movl 12(edi),edx
movl 16(edi),esi
movl 20(edi),edi
sti
ret
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