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|
; ScummVM - Graphic Adventure Engine
;
; ScummVM is the legal property of its developers, whose names
; are too numerous to list here. Please refer to the COPYRIGHT
; file distributed with this source distribution.
;
; This program is free software; you can redistribute it and/or
; modify it under the terms of the GNU General Public License
; as published by the Free Software Foundation; either version 2
; of the License, or (at your option) any later version.
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
;
;---------------------------------------------------------------------------
;
; SCITRACE
; TSR for logging specific calls inside sierra sci
; Written by M. Kiewitz
;
;---------------------------------------------------------------------------
; Simply replace 51h 51h 51h 51h in sierra sci with
; CDh 90h 90h 90h. This code will then log copyrect calls to scitrace.bin
.286
code_seg segment public
assume cs:code_seg, ds:nothing, es:nothing
org 00100h
scitrace: jmp install_my_prog
;---------------------------------------------------------------------------
filename: db 'SCITRACE.BIN', 0
inthandler: push ax
push bx
push cx
push dx
push ds
push cs
pop ds
mov ah, 3Dh
mov al, 1
mov dx, offset filename
xor cl, cl
int 21h
pop ds
jc int_error
mov bx, ax
mov ax, 4202h
xor cx, cx
xor dx, dx
int 21h
mov dx, si
mov ah, 40h
mov cx, 8
int 21h
mov ah, 3Eh
int 21h
int_error: pop dx
pop cx
pop bx
pop ax
movsw
movsw
movsw
movsw
iret
end_of_tsr:
;---------------------------------------------------------------------------
titlestr: db 'SCITRACE - written by M. Kiewitz',13,10,'$'
errorfile: db 'error creating file',13,10,'$'
;---------------------------------------------------------------------------
install_my_prog:
push cs
pop ds
mov ah, 09h
mov dx, offset titlestr
int 21h
mov ah, 3Ch
mov cx, 0
mov dx, offset filename
int 21h
jnc valid_open
mov ah, 09h
mov dx, offset errorfile
int 21h
mov ax, 6200h
int 21h
mov es, bx
mov ax, 4C00h
int 21h
valid_open: mov bx, ax
mov ah, 3Eh
int 21h
NowInstallTSR:
mov ax, 2590h
mov dx, offset inthandler
int 21h ; int 90h pointer <- ds:dx
mov ax, ds:[002ch] ; get envt segment
mov es, ax
mov ax, 4900h
int 21h
mov dx, offset end_of_tsr
add dx, 15
shr dx, 4
mov ax, 3100h
int 21h
;---------------------------------------------------------------------------
code_seg ends
end scitrace
|
