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132 lines
5.3 KiB
C
132 lines
5.3 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: Structures for run-time initialization/finalization.
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*
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****************************************************************************/
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#ifndef __RTINIT_H__
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#define __RTINIT_H__
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#include "langenvd.h"
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#if defined( __PPC__ )
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#define __TGT_SYS __TGT_SYS_AXP_PPC
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typedef unsigned __type_rtp;
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typedef unsigned __type_pad;
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typedef void( *__type_rtn ) ( void );
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#elif defined( __AXP__ )
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#define __TGT_SYS __TGT_SYS_AXP_NT
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typedef unsigned __type_rtp;
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typedef unsigned __type_pad;
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typedef void( *__type_rtn ) ( void );
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#elif defined( __MIPS__ )
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#define __TGT_SYS __TGT_SYS_MIPS
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typedef unsigned __type_rtp;
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typedef unsigned __type_pad;
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typedef void( *__type_rtn ) ( void );
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#else
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#define __TGT_SYS __TGT_SYS_X86
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typedef unsigned char __type_rtp;
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typedef unsigned short __type_pad;
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#if defined( __386__ )
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typedef void __near( *__type_rtn ) ( void );
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#else
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typedef void( *__type_rtn ) ( void );
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#endif
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#endif
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#include "langenv.h"
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#if defined( __MEDIUM__ ) || defined( __LARGE__ ) || defined( __HUGE__ )
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#define __LARGE_CODE__
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#endif
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// initialization progresses from highest priority to lowest
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// finalization progresses from lowest to highest
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#pragma pack( 1 )
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struct rt_init // structure placed in XI/YI segment
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{
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__type_rtp rtn_type; // - near=0/far=1 routine indication
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// also used when walking table to flag
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// completed entries
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__type_rtp priority; // - priority (0-highest 255-lowest)
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__type_rtn rtn; // - routine
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#if !( defined( __LARGE_CODE__ ) || defined( __386__ ) ) || defined( COMP_CFG_COFF )
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__type_pad padding; // - padding, when small code ptr
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// or when risc cpu
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#endif
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};
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#pragma pack()
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#if defined( M_I86 )
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#if defined( __LARGE_CODE__ ) /* segmented large code models */
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#define YIXI( seg, label, routine, priority ) \
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struct rt_init __based( __segname( seg ) ) label = \
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{ 1, priority, routine };
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#else /* other segmented models */
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#define YIXI( seg, label, routine, priority ) \
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struct rt_init __based( __segname( seg ) ) label = \
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{ 0, priority, routine, 0 };
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#endif
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#else /* non-segmented architectures */
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#define YIXI( seg, label, routine, priority ) \
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struct rt_init __based( __segname( seg ) ) label = \
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{ 0, priority, routine };
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#endif
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/*
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Use these when you want a global label for the XI/YI structure
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*/
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#define XI( label, routine, priority ) YIXI( TS_SEG_XI, label, routine, priority )
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#define YI( label, routine, priority ) YIXI( TS_SEG_YI, label, routine, priority )
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/*
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Use these when you don't care about the label on the XI/YI structure
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*/
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#define __ANON( x ) __anon ## x
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#define ANON( x ) __ANON( x )
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#define AXI( routine, priority ) static XI( ANON( __LINE__ ), routine, priority )
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#define AYI( routine, priority ) static YI( ANON( __LINE__ ), routine, priority )
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enum {
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INIT_PRIORITY_THREAD = 1, // priority for thread data init
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INIT_PRIORITY_FPU = 2, // priority for FPU/EMU init
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INIT_PRIORITY_RUNTIME = 10, // priority for run/time initialization
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INIT_PRIORITY_IOSTREAM = 20, // priority for IOSTREAM
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INIT_PRIORITY_LIBRARY = 32, // default library-initialization priority
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INIT_PRIORITY_PROGRAM = 64, // default program-initialization priority
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FINI_PRIORITY_DTOR = 40, // priority for module DTOR
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DTOR_PRIORITY = 40, // priority for module DTOR
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FINI_PRIORITY_EXIT = 16 // when exit() is called, functions between
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// 255 and this are called, the rest of the
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// fini routines are called from __exit().
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};
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/* have to turn off, or we get unref'd warnings for AXI & AYI stuff */
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#pragma off( unreferenced )
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#endif
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