;
; LAUNCHER -
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; â®â « ãç¥à £à㧨⠨ä®à¬ æ¨î ® ¯à®£à ¬¬ å ¤«ï § ¯ã᪠¨§ ä ©«
; AUTORUN.DAT. ®à¬ â ®ç¥ì ¯à®áâ ¨ ¢ ª®¬¬¥â à¨ïå ¥ 㦤 ¥âáï.
;
; ®¬¯¨«¨àã©â¥ á ¯®¬®éìî FASM 1.52 ¨ ¢ëè¥
;
include "../../../macros.inc"
use32
org 0x0
db 'MENUET01' ; 8 byte id
dd 0x01 ; header version
dd START ; start of code
dd I_END ; size of image
dd 0x8000 ; memory for app
dd 0x8000 ; esp
dd 0x0 , 0x0 ; I_Param , I_Icon
;include "DEBUG.INC"
START: ; start of execution
; mov eax, 5
; mov ebx, 10
; mcall
; mcall 18,15
mov eax, 70 ; load AUTORUN.DAT
mov ebx, autorun_dat_info
mcall
add ebx, file_data
mov [fileend], ebx
; this cycle does not contain an obvious exit condition,
; but auxiliary procedures (like "get_string") will exit
; at EOF
start_program:
call skip_spaces
cmp al,'#'
jz skip_this_string
call clear_strings
mov edi, program
call get_string
mov edi, parameters
call get_string
call get_number
;dps <"STARTING A PROGRAM",13,10>
call run_program
skip_this_string:
call next_line
jmp start_program
exit:
or eax, -1
mcall
run_program: ; time to delay in eax
push eax
mcall 70, start_info
pop ebx
; if delay is negative, wait for termination
; of the spawned process
test ebx, ebx
js must_wait_for_termination
; otherwise, simply wait
mov eax, 5
mcall
ret
must_wait_for_termination:
mov esi, eax ; save slot for the future
; get process slot
mov ecx, eax
mcall 18, 21
; if an error has occured, exit
test eax, eax
jz child_exited
mov ecx, eax
; wait
wait_for_termination:
mcall 5, 1
mov ebx, processinfo
mcall 9
cmp word [ebx+50], 9 ; the slot was freed?
jz child_exited
cmp dword [ebx+30], esi ; the slot is still occupied by our child?
jz wait_for_termination
child_exited:
ret
clear_strings: ; clears buffers
pushad
mov ecx, 60
mov edi, program
xor al, al ;mov al, ' '
rep stosb
mov ecx, 60
mov edi, parameters
rep stosb
popad
ret
get_string: ; pointer to destination buffer in edi
pushad
call skip_spaces
mov esi, [position]
;dpd esi
;dps <13,10>
add esi, file_data
.start:
cmp esi, [fileend]
jae exit
lodsb
cmp al, ' '
je .finish
stosb
inc [position]
jmp .start
.finish:
popad
ret
get_number:
push ebx esi
call skip_spaces
mov esi, [position]
add esi, file_data
xor eax, eax
cmp byte [esi], '-'
jnz @f
inc eax
inc esi
inc [position]
@@:
push eax
xor eax, eax
xor ebx, ebx
.start:
cmp esi, [fileend]
jae .finish
lodsb
sub al, '0'
cmp al, 9
ja .finish
lea ebx,[ebx*4+ebx]
lea ebx,[ebx*2+eax]
inc [position]
jmp .start
.finish:
pop eax
dec eax
jnz @f
neg ebx
@@:
mov eax, ebx
pop esi ebx
ret
skip_spaces:
push esi
xor eax, eax
mov esi, [position]
add esi, file_data
.start:
cmp esi, [fileend]
jae .finish
lodsb
cmp al, ' '
jne .finish
inc [position]
jmp .start
.finish:
;dps "NOW AL = "
;mov [tmp],al
;mov edx, tmp
;call debug_outstr
;dps <13,10>
pop esi
ret
next_line:
mov esi, [position]
add esi, file_data
.start:
cmp esi, [fileend]
jae exit
lodsb
cmp al, 13
je .finish
cmp al, 10
je .finish
inc [position]
jmp .start
.finish:
inc [position]
cmp esi, [fileend]
jae exit
lodsb
cmp al, 13
je .finish
cmp al, 10
je .finish
ret
; DATA:
position dd 0 ; position in file
autorun_dat_info: ; AUTORUN.DAT
.mode dd 0 ; read file
.start_block dd 0 ; block to read
dd 0
.blocks dd 16*512 ; 16*512 bytes max
.address dd file_data
db "AUTORUN.DAT",0
start_info:
.mode dd 7
dd 0
.params dd parameters
dd 0
dd 0
.path: ;
I_END:
program rb 61 ; 60 + [0] char
parameters rb 61
processinfo rb 1024
fileend dd ?
file_data rb 16*512