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b2bc0096dc
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15079 87f5fb63-7c3d-0410-a384-fd976d0f7a62
143 lines
5.6 KiB
C
143 lines
5.6 KiB
C
/*
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* $Id: stdlib_stackcheck.c,v 1.10 2006-01-08 12:04:26 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2006 by Olaf Barthel <olsen (at) sourcery.han.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STDLIB_HEADERS_H
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#include "stdlib_headers.h"
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#endif /* _STDLIB_HEADERS_H */
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/****************************************************************************/
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#ifndef _STDLIB_CONSTRUCTOR_H
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#include "stdlib_constructor.h"
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#endif /* _STDLIB_CONSTRUCTOR_H */
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/****************************************************************************/
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#if (defined(__GNUC__) && !defined(__PPC__))
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/****************************************************************************/
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/* The stack extension code has its own set of these routines. */
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#ifndef STACK_EXTENSION
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/****************************************************************************/
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#if defined(SMALL_DATA)
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#define A4(x) "a4@(" #x ":W)"
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#elif defined(SMALL_DATA32)
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#define A4(x) "a4@(" #x ":L)"
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#else
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#define A4(x) #x
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#endif /* SMALL_DATA */
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/****************************************************************************/
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asm(" \n\
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\n\
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.text \n\
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.even \n\
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\n\
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.globl ___stkovf \n\
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.globl ___stk_limit \n\
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\n\
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.globl ___stkchk_d0 \n\
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\n\
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___stkchk_d0: \n\
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\n\
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negl d0 \n\
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addl sp,d0 \n\
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cmpl "A4(___stk_limit)",d0 \n\
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jcs overflow | if (sp-d0) < __stk_limit then we have an overflow\n\
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rts \n\
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\n\
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.globl ___stkchk_0 \n\
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\n\
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___stkchk_0: \n\
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\n\
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cmpl "A4(___stk_limit)",sp \n\
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jcs overflow | if sp < __stk_limit then we have an overflow\n\
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rts \n\
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\n\
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overflow: \n\
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\n\
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movel #0,"A4(___stk_limit)" | disable stack checking \n\
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jra ___stkovf \n\
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\n\
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");
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/****************************************************************************/
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#endif /* STACK_EXTENSION && !__PPC__ */
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/****************************************************************************/
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#endif /* __GNUC__ */
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/****************************************************************************/
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UBYTE * NOCOMMON __stk_limit;
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/****************************************************************************/
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#if defined(__SASC)
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UBYTE * __base;
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#endif /* __SASC */
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/****************************************************************************/
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STK_CONSTRUCTOR(stk_init)
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{
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struct Task * this_task = FindTask(NULL);
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ULONG lower = (ULONG)this_task->tc_SPLower;
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ENTER();
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#if defined(__GNUC__)
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{
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__stk_limit = (UBYTE *)(lower + __stk_safezone + __stk_argbytes);
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}
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#endif /* __GNUC__ */
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#if defined(__SASC)
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{
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__base = (UBYTE *)(lower + __stk_safezone + __stk_argbytes);
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}
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#endif /* __SASC */
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LEAVE();
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CONSTRUCTOR_SUCCEED();
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}
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