359 lines
9.2 KiB
PHP
359 lines
9.2 KiB
PHP
;*****************************************************************************
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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: Memory model setup for interfacing with C code.
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;*
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;*****************************************************************************
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_SMALL_CODE = 00h
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_BIG_CODE = 01h
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_SMALL_DATA = 00h
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_BIG_DATA = 02h
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_HUGE_DATA = 04h
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_LONG_INTS = 08h
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_USE_32_SEGS = 10h
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_386 = 10h ; from old clib
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_DS_PEGGED = 20h ; from old clib (used for Windows)
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_TINY = 40h ; from old clib (formerly 10h)
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_FLAT = ( _SMALL_CODE or _SMALL_DATA or _USE_32_SEGS )
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_SMALL = ( _SMALL_CODE or _SMALL_DATA )
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_COMPACT = ( _SMALL_CODE or _BIG_DATA )
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_MEDIUM = ( _BIG_CODE or _SMALL_DATA )
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_LARGE = ( _BIG_CODE or _BIG_DATA )
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_HUGE = ( _BIG_CODE or _HUGE_DATA )
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_EMULATION = 00h
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_8087 = 01h
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ifdef __WASM__
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ifdef __FLAT__
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_MODEL = _FLAT
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endif
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ifdef __SMALL__
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_MODEL = _SMALL
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endif
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ifdef __COMPACT__
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_MODEL = _COMPACT
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endif
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ifdef __MEDIUM__
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_MODEL = _MEDIUM
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endif
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ifdef __LARGE__
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_MODEL = _LARGE
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endif
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ifdef __HUGE__
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_MODEL = _HUGE
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endif
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ifdef __386__
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_MODEL = ( _MODEL or _USE_32_SEGS )
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endif
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ifdef __WINDOWS__
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if _MODEL and (_BIG_DATA or _HUGE_DATA)
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_MODEL = ( _MODEL or _DS_PEGGED )
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endif
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endif
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ifdef __FPC__
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_MATH = _EMULATION
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endif
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ifdef __FPI__
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_MATH = _8087
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endif
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ifdef __FPI87__
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_MATH = _8087
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endif
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else
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include .\model.inc ; defines _MODEL, _MATH symbols
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endif
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if _MODEL and _BIG_CODE
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modstart macro modname,alignment
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ifdef NDEBUG
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name modname
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endif
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ifb <alignment>
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_TEXT segment word public 'CODE'
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else
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_TEXT segment alignment public 'CODE'
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endif
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assume cs:_TEXT
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endm
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calli macro regname
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call dword ptr [regname]
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endm
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codeptr macro p1,p2
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ifb <p2>
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extrn p1 : dword
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else
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extrn "&p1",p2 : dword
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endif
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endm
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docall macro dest
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call far ptr dest
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endm
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dojmp macro dest
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jmp far ptr dest
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endm
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defp macro dsym,exp
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dsym proc far exp
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endm
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defpe macro dsym
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ifdef _EXPORT
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dsym proc far export
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else
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dsym proc far
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endif
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endm
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defn macro dsym
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dsym proc near
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endm
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endproc macro dsym
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dsym endp
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endm
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epilog macro
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if _MODEL and _USE_32_SEGS
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pop EBP
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dec EBP
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mov ESP,EBP
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else
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pop BP
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dec BP
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endif
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endm
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prolog macro
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if _MODEL and _USE_32_SEGS
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inc EBP
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push EBP
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mov EBP,ESP
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else
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inc BP
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push BP
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mov BP,SP
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endif
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endm
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xdefp macro p1,p2
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ifb <p2>
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public p1
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else
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public "&p1",p2
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endif
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endm
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xref macro p1,p2
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ifb <p2>
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extrn `p1` : far
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else
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extrn "&p1",`p2` : far
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endif
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endm
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lcall macro dest
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push cs
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call near ptr dest
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endm
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else
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modstart macro modname,alignment
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ifdef NDEBUG
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name modname
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endif
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if _MODEL and _USE_32_SEGS
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_TEXT segment use32 alignment public 'CODE'
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else
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_TEXT segment alignment public 'CODE'
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endif
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assume cs:_TEXT
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endm
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calli macro regname
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call regname
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endm
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codeptr macro p1,p2
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if _MODEL and _USE_32_SEGS
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ifb <p2>
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extrn p1 : dword
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else
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extrn "&p1",p2 : dword
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endif
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else
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ifb <p2>
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extrn p1 : word
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else
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extrn "&p1",p2 : word
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endif
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endif
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endm
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defn macro dsym
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dsym proc near
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endm
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defp macro dsym,exp
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dsym proc near exp
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endm
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defpe macro dsym
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ifdef _EXPORT
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dsym proc near export
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else
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dsym proc near
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endif
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endm
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docall macro dest
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call dest
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endm
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dojmp macro dest
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jmp dest
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endm
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endproc macro dsym
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dsym endp
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endm
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epilog macro
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if _MODEL and _USE_32_SEGS
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pop EBP
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else
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pop BP
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endif
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endm
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prolog macro
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if _MODEL and _USE_32_SEGS
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push EBP
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mov EBP,ESP
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else
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push BP
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mov BP,SP
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endif
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endm
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xdefp macro p1,p2
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ifb <p2>
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public p1
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else
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public "&p1",p2
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endif
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endm
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xref macro p1,p2
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ifb <p2>
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extrn `p1` : near
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else
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extrn "&p1",`p2` : near
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endif
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endm
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lcall macro dest
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call dest
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endm
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endif
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endmod macro
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_TEXT ends
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endm
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dataseg macro
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DGROUP group _DATA
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assume ds:DGROUP,ss:DGROUP
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if _MODEL and _USE_32_SEGS
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_DATA segment use32 dword public 'DATA'
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else
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_DATA segment word public 'DATA'
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endif
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endm
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datasegment macro
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dataseg ; should be phased out
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endm
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enddata macro
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_DATA ends
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endm
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bss_segment macro
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if _MODEL and _USE_32_SEGS
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_BSS segment use32 dword public 'BSS'
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else
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_BSS segment word public 'BSS'
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endif
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DGROUP group _BSS
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assume ds:DGROUP
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endm
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endbss macro
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_BSS ends
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endm
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alias_function macro alias, function
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ifb <function>
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xref "C",_&alias
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else
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xref "C",function
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endif
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.code
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public "C",`alias`
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ifdef _EXPORT
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`alias` proc export
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else
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`alias` proc
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endif
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ifb <function>
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jmp _&alias
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else
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jmp `function`
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endif
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`alias` endp
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endm
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xred macro p1,p2,p3
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ifb <p3>
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extrn p1 : p2
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else
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extrn "&p1",p2 : p3
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endif
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endm
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