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page 60,132
name _msgret
title C to Message Retriever
;-------------------------------------------------------------------
;
; MODULE: _msgret
;
; PURPOSE: Supplies an interface between C programs and
; the DOS 3.3 message retriever
;
; CALLING FORMAT:
; sysloadmsg(&inregs,&outregs);
; sysdispmsg(&inregs,&outregs);
;
; DATE: 5-21-87
;
;-------------------------------------------------------------------
INCLUDE SYSMSG.INC ;PERMIT SYSTEM MESSAGE HANDLER DEFINITION ;AN000;
MSG_UTILNAME <RESTORE> ;IDENTIFY THE COMPONENT ;AN000;
.8087
_TEXT SEGMENT BYTE PUBLIC 'CODE'
_TEXT ENDS
_DATA SEGMENT WORD PUBLIC 'DATA'
_DATA ENDS
CONST SEGMENT WORD PUBLIC 'CONST'
CONST ENDS
_BSS SEGMENT WORD PUBLIC 'BSS'
_BSS ENDS
DGROUP GROUP CONST, _BSS, _DATA
ASSUME CS: _TEXT, DS: _TEXT, SS: DGROUP, ES: DGROUP
public _sysloadmsg
public _sysdispmsg
;-------------------------------------------------------------------
;-------------------------------------------------------------------
_DATA segment
.XLIST
.XCREF
MSG_SERVICES <MSGDATA> ;DATA AREA FOR THE MESSAGE HANDLER ;AN000;
.LIST
.CREF
_DATA ends
_TEXT segment
;-------------------------------------------------------------------
;DEFAULT=CHECK DOS VERSION
;DEFAULT=NEARmsg
;DEFAULT=INPUTmsg
;DEFAULT=NUMmsg
;DEFAULT=NO TIMEmsg
;DEFAULT=NO DATEmsg
.XLIST
.XCREF
MSG_SERVICES <LOADmsg,INPUTmsg,DISPLAYmsg,CHARmsg,NUMmsg,DATEmsg,FARmsg> ;AN000;6
MSG_SERVICES <RESTORE.CTL,RESTORE.CLA,RESTORE.CL1,RESTORE.CL2> ;AN000;6
.LIST
.CREF
;-------------------------------------------------------------------
_sysloadmsg proc near
push bp ; save user's base pointer
mov bp,sp ; set bp to current sp
push di ; save some registers
push si
; copy C inregs into proper registers
mov di,[bp+4] ; fix di (arg 0)
;-------------------------------------------------------------------
mov ax,[di+0ah] ; load di
push ax ; the di value from inregs is now on stack
mov ax,[di+00] ; get inregs.x.ax
mov bx,[di+02] ; get inregs.x.bx
mov cx,[di+04] ; get inregs.x.cx
mov dx,[di+06] ; get inregs.x.dx
mov si,[di+08] ; get inregs.x.si
pop di ; get inregs.x.di from stack
push bp ; save base pointer
;-------------------------------------------------------------------
call sysloadmsg ; call the message retriever
;-------------------------------------------------------------------
pop bp ; restore base pointer
push di ; the di value from call is now on stack
mov di,[bp+6] ; fix di (arg 1)
mov [di+00],ax ; load outregs.x.ax
mov [di+02],bx ; load outregs.x.bx
mov [di+04],cx ; load outregs.x.cx
mov [di+06],dx ; load outregs.x.dx
mov [di+08],si ; load outregs.x.si
lahf ; get flags into ax
mov al,ah ; move into low byte
mov [di+0ch],ax ; load outregs.x.cflag
pop ax ; get di from stack
mov [di+0ah],ax ; load outregs.x.di
;-------------------------------------------------------------------
pop si ; restore registers
pop di
mov sp,bp ; restore sp
pop bp ; restore user's bp
ret
_sysloadmsg endp
;_sysgetmsg proc near
;
; push bp ; save user's base pointer
; mov bp,sp ; set bp to current sp
; push di ; save some registers
; push si
;
;; copy C inregs into proper registers
;
; mov di,[bp+4] ; fix di (arg 0)
;
;;-------------------------------------------------------------------
;
; mov ax,[di+0ah] ; load di
; push ax ; the di value from inregs is now on stack
;
; mov ax,[di+00] ; get inregs.x.ax
; mov bx,[di+02] ; get inregs.x.bx
; mov cx,[di+04] ; get inregs.x.cx
; mov dx,[di+06] ; get inregs.x.dx
; mov si,[di+08] ; get inregs.x.si
; pop di ; get inregs.x.di from stack
;
; push bp ; save base pointer
;
;;-------------------------------------------------------------------
; call sysgetmsg ; call the message retriever
;;-------------------------------------------------------------------
;
; pop bp ; restore base pointer
; push di ; the di value from call is now on stack
; mov di,[bp+6] ; fix di (arg 1)
;
; mov [di+00],ax ; load outregs.x.ax
; mov [di+02],bx ; load outregs.x.bx
; mov [di+04],cx ; load outregs.x.cx
; mov [di+06],dx ; load outregs.x.dx
; mov [di+08],si ; load outregs.x.si
;
; lahf ; get flags into ax
; mov al,ah ; move into low byte
; mov [di+0ch],ax ; load outregs.x.cflag
;
; pop ax ; get di from stack
; mov [di+0ah],ax ; load outregs.x.di
;
;;-------------------------------------------------------------------
;
; pop si ; restore registers
; pop di
; mov sp,bp ; restore sp
; pop bp ; restore user's bp
; ret
;
;_sysgetmsg endp
_sysdispmsg proc near
push bp ; save user's base pointer
mov bp,sp ; set bp to current sp
push di ; save some registers
push si
; copy C inregs into proper registers
mov di,[bp+4] ; fix di (arg 0)
;-------------------------------------------------------------------
mov ax,[di+0ah] ; load di
push ax ; the di value from inregs is now on stack
mov ax,[di+00] ; get inregs.x.ax
mov bx,[di+02] ; get inregs.x.bx
mov cx,[di+04] ; get inregs.x.cx
mov dx,[di+06] ; get inregs.x.dx
mov si,[di+08] ; get inregs.x.si
pop di ; get inregs.x.di from stack
push bp ; save base pointer
;-------------------------------------------------------------------
call sysdispmsg ; call the message retriever
;-------------------------------------------------------------------
pop bp ; restore base pointer
push di ; the di value from call is now on stack
mov di,[bp+6] ; fix di (arg 1)
mov [di+00],ax ; load outregs.x.ax
mov [di+02],bx ; load outregs.x.bx
mov [di+04],cx ; load outregs.x.cx
mov [di+06],dx ; load outregs.x.dx
mov [di+08],si ; load outregs.x.si
lahf ; get flags into ax
mov al,ah ; move into low byte
mov [di+0ch],ax ; load outregs.x.cflag
pop ax ; get di from stack
mov [di+0ah],ax ; load outregs.x.di
;-------------------------------------------------------------------
pop si ; restore registers
pop di
mov sp,bp ; restore sp
pop bp ; restore user's bp
ret
_sysdispmsg endp
include msgdcl.inc
_TEXT ends ; end code segment
end
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