mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-17 20:32:35 +03:00
97918755c2
git-svn-id: svn://kolibrios.org@703 a494cfbc-eb01-0410-851d-a64ba20cac60
188 lines
5.5 KiB
C
188 lines
5.5 KiB
C
/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: signal handling ( for DOS, Windows 3.x and ? Netware )
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*
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****************************************************************************/
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#include "variety.h"
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#include <stdio.h>
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#include <signal.h>
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//#include <dos.h>
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#include <errno.h>
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#include <float.h>
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#include "rtdata.h"
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#include "sigtab.h"
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#include "sigfunc.h"
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#include "seterrno.h"
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#ifndef __WINDOWS_386__
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#ifndef __NETWARE__
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//extern void __grab_int23( void );
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//extern void __restore_int23( void );
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//extern void __grab_int_ctrl_break( void );
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//extern void __restore_int_ctrl_break( void );
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#endif
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#endif
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#define __SIGLAST SIGIOVFL
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static __sig_func SignalTable[] = {
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SIG_IGN, /* unused */
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SIG_DFL, /* SIGABRT */
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SIG_DFL, /* SIGFPE */
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SIG_DFL, /* SIGILL */
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SIG_DFL, /* SIGINT */
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SIG_DFL, /* SIGSEGV */
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SIG_DFL, /* SIGTERM */
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SIG_DFL, /* SIGBREAK */
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SIG_IGN, /* SIGUSR1 */
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SIG_IGN, /* SIGUSR2 */
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SIG_IGN, /* SIGUSR3 */
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SIG_DFL, /* SIGIDIVZ */
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SIG_DFL /* SIGIOVFL */
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};
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static FPEhandler *__old_FPE_handler = NULL;
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void __sigabort( void )
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{
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raise( SIGABRT );
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}
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//extern void _fpmath( void );
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//#pragma aux _fpmath "__fpmath";
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_WCRTLINK void __sigfpe_handler( int fpe_type )
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{
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__sig_func func;
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func = SignalTable[ SIGFPE ];
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if( func != SIG_IGN && func != SIG_DFL && func != SIG_ERR ) {
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SignalTable[ SIGFPE ] = SIG_DFL; /* 09-nov-87 FWC */
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(*(__sigfpe_func)func)( SIGFPE, fpe_type ); /* so we can pass 2'nd parm */
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}
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}
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_WCRTLINK __sig_func signal( int sig, __sig_func func )
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{
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__sig_func prev_func;
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if(( sig < 1 ) || ( sig > __SIGLAST )) {
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__set_errno( EINVAL );
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return( SIG_ERR );
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}
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_RWD_abort = __sigabort; /* change the abort rtn address */
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if( sig == SIGINT ) {
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if( func == SIG_DFL ) {
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// __restore_int23();
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} else if( func != SIG_ERR ) {
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// __grab_int23();
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}
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} else if( sig == SIGBREAK ) {
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if( func == SIG_DFL ) {
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// __restore_int_ctrl_break();
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} else if( func != SIG_ERR ) {
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// __grab_int_ctrl_break();
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}
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} else if( sig == SIGFPE ) {
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if( func == SIG_DFL ) {
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__restore_FPE_handler();
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} else if( func != SIG_ERR ) {
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__grab_FPE_handler();
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}
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}
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prev_func = _RWD_sigtab[ sig ];
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_RWD_sigtab[ sig ] = func;
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return( prev_func );
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}
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_WCRTLINK int raise( int sig )
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{
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__sig_func func;
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func = _RWD_sigtab[ sig ];
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switch( sig ) {
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case SIGFPE:
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__sigfpe_handler( FPE_EXPLICITGEN );
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break;
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case SIGABRT:
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if( func == SIG_DFL ) {
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__terminate();
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}
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case SIGINT:
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if( func != SIG_IGN && func != SIG_DFL && func != SIG_ERR ) {
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_RWD_sigtab[ sig ] = SIG_DFL; /* 09-nov-87 FWC */
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// __restore_int23();
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(*func)( sig );
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}
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break;
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case SIGBREAK:
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if( func != SIG_IGN && func != SIG_DFL && func != SIG_ERR ) {
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_RWD_sigtab[ sig ] = SIG_DFL; /* 09-nov-87 FWC */
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// __restore_int_ctrl_break();
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(*func)( sig );
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}
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break;
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case SIGILL:
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case SIGSEGV:
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case SIGTERM:
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case SIGUSR1:
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case SIGUSR2:
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case SIGUSR3:
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case SIGIDIVZ:
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case SIGIOVFL:
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if( func != SIG_IGN && func != SIG_DFL && func != SIG_ERR ) {
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_RWD_sigtab[ sig ] = SIG_DFL; /* 09-nov-87 FWC */
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(*func)( sig );
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}
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break;
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default:
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return( -1 );
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}
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return( 0 );
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}
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void __restore_FPE_handler( void )
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{
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if( __old_FPE_handler == NULL ) {
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return;
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}
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__FPE_handler = __old_FPE_handler;
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__old_FPE_handler = NULL;
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}
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void __grab_FPE_handler( void )
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{
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if( __old_FPE_handler == NULL ) {
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__old_FPE_handler = __FPE_handler;
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__FPE_handler = __sigfpe_handler;
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}
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}
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