mdef.inc
来自「开放源码的编译器open watcom 1.6.0版的源代码」· INC 代码 · 共 359 行
INC
359 行
;*****************************************************************************
;*
;* Open Watcom Project
;*
;* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
;*
;* ========================================================================
;*
;* This file contains Original Code and/or Modifications of Original
;* Code as defined in and that are subject to the Sybase Open Watcom
;* Public License version 1.0 (the 'License'). You may not use this file
;* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
;* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
;* provided with the Original Code and Modifications, and is also
;* available at www.sybase.com/developer/opensource.
;*
;* The Original Code and all software distributed under the License are
;* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
;* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
;* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
;* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
;* NON-INFRINGEMENT. Please see the License for the specific language
;* governing rights and limitations under the License.
;*
;* ========================================================================
;*
;* Description: Memory model setup for interfacing with C code.
;*
;*****************************************************************************
_SMALL_CODE = 00h
_BIG_CODE = 01h
_SMALL_DATA = 00h
_BIG_DATA = 02h
_HUGE_DATA = 04h
_LONG_INTS = 08h
_USE_32_SEGS = 10h
_386 = 10h ; from old clib
_DS_PEGGED = 20h ; from old clib (used for Windows)
_TINY = 40h ; from old clib (formerly 10h)
_FLAT = ( _SMALL_CODE or _SMALL_DATA or _USE_32_SEGS )
_SMALL = ( _SMALL_CODE or _SMALL_DATA )
_COMPACT = ( _SMALL_CODE or _BIG_DATA )
_MEDIUM = ( _BIG_CODE or _SMALL_DATA )
_LARGE = ( _BIG_CODE or _BIG_DATA )
_HUGE = ( _BIG_CODE or _HUGE_DATA )
_EMULATION = 00h
_8087 = 01h
ifdef __WASM__
ifdef __FLAT__
_MODEL = _FLAT
endif
ifdef __SMALL__
_MODEL = _SMALL
endif
ifdef __COMPACT__
_MODEL = _COMPACT
endif
ifdef __MEDIUM__
_MODEL = _MEDIUM
endif
ifdef __LARGE__
_MODEL = _LARGE
endif
ifdef __HUGE__
_MODEL = _HUGE
endif
ifdef __386__
_MODEL = ( _MODEL or _USE_32_SEGS )
endif
ifdef __WINDOWS__
if _MODEL and (_BIG_DATA or _HUGE_DATA)
_MODEL = ( _MODEL or _DS_PEGGED )
endif
endif
ifdef __FPC__
_MATH = _EMULATION
endif
ifdef __FPI__
_MATH = _8087
endif
ifdef __FPI87__
_MATH = _8087
endif
else
include .\model.inc ; defines _MODEL, _MATH symbols
endif
if _MODEL and _BIG_CODE
modstart macro modname,alignment
ifdef NDEBUG
name modname
endif
ifb <alignment>
_TEXT segment word public 'CODE'
else
_TEXT segment alignment public 'CODE'
endif
assume cs:_TEXT
endm
calli macro regname
call dword ptr [regname]
endm
codeptr macro p1,p2
ifb <p2>
extrn p1 : dword
else
extrn "&p1",p2 : dword
endif
endm
docall macro dest
call far ptr dest
endm
dojmp macro dest
jmp far ptr dest
endm
defp macro dsym,exp
dsym proc far exp
endm
defpe macro dsym
ifdef _EXPORT
dsym proc far export
else
dsym proc far
endif
endm
defn macro dsym
dsym proc near
endm
endproc macro dsym
dsym endp
endm
epilog macro
if _MODEL and _USE_32_SEGS
pop EBP
dec EBP
mov ESP,EBP
else
pop BP
dec BP
endif
endm
prolog macro
if _MODEL and _USE_32_SEGS
inc EBP
push EBP
mov EBP,ESP
else
inc BP
push BP
mov BP,SP
endif
endm
xdefp macro p1,p2
ifb <p2>
public p1
else
public "&p1",p2
endif
endm
xref macro p1,p2
ifb <p2>
extrn `p1` : far
else
extrn "&p1",`p2` : far
endif
endm
lcall macro dest
push cs
call near ptr dest
endm
else
modstart macro modname,alignment
ifdef NDEBUG
name modname
endif
if _MODEL and _USE_32_SEGS
_TEXT segment use32 alignment public 'CODE'
else
_TEXT segment alignment public 'CODE'
endif
assume cs:_TEXT
endm
calli macro regname
call regname
endm
codeptr macro p1,p2
if _MODEL and _USE_32_SEGS
ifb <p2>
extrn p1 : dword
else
extrn "&p1",p2 : dword
endif
else
ifb <p2>
extrn p1 : word
else
extrn "&p1",p2 : word
endif
endif
endm
defn macro dsym
dsym proc near
endm
defp macro dsym,exp
dsym proc near exp
endm
defpe macro dsym
ifdef _EXPORT
dsym proc near export
else
dsym proc near
endif
endm
docall macro dest
call dest
endm
dojmp macro dest
jmp dest
endm
endproc macro dsym
dsym endp
endm
epilog macro
if _MODEL and _USE_32_SEGS
pop EBP
else
pop BP
endif
endm
prolog macro
if _MODEL and _USE_32_SEGS
push EBP
mov EBP,ESP
else
push BP
mov BP,SP
endif
endm
xdefp macro p1,p2
ifb <p2>
public p1
else
public "&p1",p2
endif
endm
xref macro p1,p2
ifb <p2>
extrn `p1` : near
else
extrn "&p1",`p2` : near
endif
endm
lcall macro dest
call dest
endm
endif
endmod macro
_TEXT ends
endm
dataseg macro
DGROUP group _DATA
assume ds:DGROUP,ss:DGROUP
if _MODEL and _USE_32_SEGS
_DATA segment use32 dword public 'DATA'
else
_DATA segment word public 'DATA'
endif
endm
datasegment macro
dataseg ; should be phased out
endm
enddata macro
_DATA ends
endm
bss_segment macro
if _MODEL and _USE_32_SEGS
_BSS segment use32 dword public 'BSS'
else
_BSS segment word public 'BSS'
endif
DGROUP group _BSS
assume ds:DGROUP
endm
endbss macro
_BSS ends
endm
alias_function macro alias, function
ifb <function>
xref "C",_&alias
else
xref "C",function
endif
.code
public "C",`alias`
ifdef _EXPORT
`alias` proc export
else
`alias` proc
endif
ifb <function>
jmp _&alias
else
jmp `function`
endif
`alias` endp
endm
xred macro p1,p2,p3
ifb <p3>
extrn p1 : p2
else
extrn "&p1",p2 : p3
endif
endm
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