201 lines
5.2 KiB
NASM
201 lines
5.2 KiB
NASM
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title Special Export call locations for DS == SS conversion.
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; Windows Write, Copyright 1985-1992 Microsoft Corporation
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?DF = 1 ; Dont generate default segment definitions
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?PLM = 1
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.XLIST
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include cmacros.inc
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.LIST
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subttl Define Windows Groups
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page
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MGROUP group HEADER,EXPORTS,IMPORTS,IMPORTEND,ENDHEADER
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IGROUP group _TEXT,_INITTEXT,_ENDTEXT
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DGROUP group _DATA,DATA,CDATA,CONST,_BSS,c_common,_INITDATA,_ENDDATA,STACK
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HEADER segment para 'MODULE'
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HEADER ENDS
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EXPORTS segment byte 'MODULE'
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EXPORTS ENDS
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IMPORTS segment byte public 'MODULE'
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IMPORTS ENDS
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IMPORTEND segment byte 'MODULE'
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IMPORTEND ENDS
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ENDHEADER segment para 'MODULE'
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ENDHEADER ENDS
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_TEXT segment byte public 'CODE'
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_TEXT ENDS
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_INITTEXT segment para public 'CODE'
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_INITTEXT ends
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_ENDTEXT segment para 'CODE'
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_ENDTEXT ends
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_DATA segment para public 'DATA'
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STACKSIZE = 2048
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$$STACK dw STACKSIZE dup (?)
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$$STACKTOP label word
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dw 0
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_DATA ends
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DATA segment para public 'DATA'
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DATA ends
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CDATA segment word common 'DATA' ; C globals end up here
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CDATA ends
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CONST segment word public 'CONST'
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CONST ends
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_BSS segment para public 'BSS'
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_BSS ends
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c_common segment para common 'BSS' ; C globals end up here
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c_common ends
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_INITDATA segment para public 'BSS'
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_INITDATA ends
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_ENDDATA segment para 'BSS'
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_ENDDATA ends
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STACK segment para stack 'STACK'
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DB 0 ; Force link to write entire DGROUP
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STACK ends
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subttl ENTRYPOINT definition
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page
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ENTRYPOINT MACRO name, cwArgs
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extrn x&name:far
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public name
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name proc far
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mov ax,ds ; we have to include all this code
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nop ; or exe2mod chokes
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inc bp
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push bp
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mov bp,sp
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push ds
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mov ds,ax
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mov cx,cwArgs * 2
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mov dx,offset igroup:x&name
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jmp SetLocStack
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name endp
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ENDM
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subttl external->local stack switcher
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page
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_TEXT segment byte public 'CODE'
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assume cs:igroup, ds:dgroup, es:dgroup, ss:nothing
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;
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; SetLocStack
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;
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; Purpose: To switch to a seperate stack located in the
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; Modules Data Segment.
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;
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; Inputs: AX = module's DS
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; SS, SP, BP = caller's stack stuff
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; DS = "true" entry point addr
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; cx = no. of bytes of parameters on caller's stack
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;
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SetLocStack proc near
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mov bx,ss ; get copy of current segment
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cmp ax,bx ; see if we're already in local stack
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je inlocal ; we are - fall into existing code
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mov cs:SESPat,cx ; save arg byte count for return
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mov ss,ax
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mov sp,offset dgroup:$$STACKTOP
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push bx ; save old ss
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sub bp,2 ; point at the pushed ds
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push bp ; and old sp
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push si ; save si
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jcxz argdone
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mov ds,bx
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lea si,[bp + 8 - 2] ; point past ds, bp, far addr to args
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add si,cx ; point at top of args for backward move
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std
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shr cx,1 ; divide byte count by two
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jcxz argdone
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argloop:
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lodsw
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push ax
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loop argloop
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cld
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argdone:
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push cs
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mov ax,offset igroup:SetExtStack ; push setextstack return addr
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push ax
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mov ax,ss ; get new ds into ds and ax
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mov ds,ax
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push dx ; jump to true entry point via RET
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ret
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inlocal:
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add dx,10 ; point past prolog code
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push dx ; jump into middle of prolog code
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ret
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SetLocStack endp
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SetExtStack proc near
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pop si ; get back saved si
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pop bp ; get old sp
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pop bx ; and old ss
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mov ss,bx
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mov sp,bp ; now set them up
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pop ds ; standard epilog stuff
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pop bp
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dec bp
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db 0cah ;RETF n instruction
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SESPat dw 0
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SetExtStack endp
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subttl Entry point definitions
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page
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;
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; mp module entry points
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;
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ENTRYPOINT MMpNew, 3
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ENTRYPOINT MMpLoad, 2
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ENTRYPOINT MMpFree, 2
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;
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; routines called by interface module
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;
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ENTRYPOINT MRgchVal, 6
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ENTRYPOINT Mdecode, 2
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ENTRYPOINT MEnter, 1
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ENTRYPOINT Fill, 1
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ENTRYPOINT Clear, 0
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ENTRYPOINT Format, 1
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ENTRYPOINT MCellsContract, 0
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ENTRYPOINT MInsertBents, 8
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ENTRYPOINT MSheetCut, 0
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ENTRYPOINT MSheetCopy, 0
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ENTRYPOINT MSheetPaste, 1
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ENTRYPOINT MExeCut, 0
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ENTRYPOINT MExePaste, 0
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ENTRYPOINT CheckRecalc, 0
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ENTRYPOINT recalc, 1
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ENTRYPOINT MLoadSheet, 2
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ENTRYPOINT MSaveSheet, 3
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ENTRYPOINT MSortDialog, 4
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_TEXT ENDS
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end
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