mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-13 21:31:53 +00:00
133 lines
4.1 KiB
NASM
133 lines
4.1 KiB
NASM
; 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
|