format ELF
section '.text' executable
public start
public start as '_start'
;extrn mf_init
extrn main
include '../../../../programs/proc32.inc'
;include 'debug2.inc'
__DEBUG__=0
;start_:
virtual at 0
db 'MENUET01' ; 1. Magic number (8 bytes)
dd 0x01 ; 2. Version of executable file
dd start ; 3. Start address
dd 0x0 ; 4. Size of image
dd 0x100000 ; 5. Size of needed memory
dd 0x100000 ; 6. Pointer to stack
hparams dd 0x0 ; 7. Pointer to program arguments
hpath dd 0x0 ; 8. Pointer to program path
end virtual
start:
;DEBUGF 'Start programm\n'
;init heap of memory
mov eax,68
mov ebx,11
int 0x40
;DEBUGF ' path "%s"\n params "%s"\n', .path, .params
; check for overflow
;; that not work
; mov al, [path+buf_len-1]
; or al, [params+buf_len-1]
; jnz .crash
; check if path written by OS
mov [argc], 0
mov eax, [hparams]
test eax, eax
jz .without_path
mov eax, path
cmp word ptr eax, 32fh ; '/#3' UTF8
jne .without_path
mov word ptr eax, 12fh ; '/#1' fix to CP866
.without_path:
mov esi, eax
call push_param
; retrieving parameters
mov esi, params
xor edx, edx ; dl - èä¸ò ïàðàìåòð(1) èëè ðàçäåëèòåëè(0)
; dh - ñèìâîë ñ êîòîðîãî íà÷àëñÿ ïàðàìåòð (1 êàâû÷êè, 0 îñòàëüíîå)
mov ecx, 1 ; cl = 1
; ch = 0 ïðîñòî íîëü
.parse:
lodsb
test al, al
jz .run
test dl, dl
jnz .findendparam
;{åñëè áûë ðàçäåëèòåëü
cmp al, ' '
jz .parse ;çàãðóæåí ïðîáåë, ãðóçèì ñëåäóþùèé ñèìâîë
mov dl, cl ;íà÷èíàåòñÿ ïàðàìåòð
cmp al, '"'
jz @f ;çàãðóæåíû êàâû÷êè
mov dh, ch ;ïàðàìåòð áåç êàâû÷åê
dec esi
call push_param
inc esi
jmp .parse
@@:
mov dh, cl ;ïàðàìåòð â êàâû÷åêàõ
call push_param ;åñëè íå ïðîáåë çíà÷èò íà÷èíàåòñÿ êàêîé òî ïàðàìåòð
jmp .parse ;åñëè áûë ðàçäåëèòåëü}
.findendparam:
test dh, dh
jz @f ; áåç êàâû÷åê
cmp al, '"'
jz .clear
jmp .parse
@@:
cmp al, ' '
jnz .parse
.clear:
lea ebx, [esi - 1]
mov [ebx], ch
mov dl, ch
jmp .parse
.run:
;DEBUGF 'call main(%x, %x) with params:\n', [argc], argv
if __DEBUG__ = 1
mov ecx, [argc]
@@:
lea esi, [ecx * 4 + argv-4]
DEBUGF '0x%x) "%s"\n', cx, [esi]
loop @b
end if
push argv
push [argc]
call main
.exit:
;DEBUGF 'Exit from prog\n';
xor eax,eax
dec eax
int 0x40
dd -1
.crash:
;DEBUGF 'E:buffer overflowed\n'
jmp .exit
;============================
push_param:
;============================
;parameters
; esi - pointer
;description
; procedure increase argc
; and add pointer to array argv
; procedure changes ebx
mov ebx, [argc]
cmp ebx, max_parameters
jae .dont_add
mov [argv+4*ebx], esi
inc [argc]
.dont_add:
ret
proc memcpy c, to:dword,from:dword,count:dword
push esi
push edi
mov ecx,[count]
test ecx,ecx
jz no_copy_block
mov esi,[from]
mov edi,[to]
cld
rep movsb
no_copy_block:
pop edi
pop esi
mov eax, [to]
ret
endp
proc memmove c, to:dword,from:dword,count:dword
push esi
push edi
mov ecx,[count]
test ecx,ecx
jz no_copy_block_
mov esi,[from]
mov edi,[to]
cmp esi, edi
je no_copy_block_
jg copy_
add esi, ecx
add edi, ecx
dec esi
dec edi
std
copy_:
rep movsb
cld
no_copy_block_:
pop edi
pop esi
mov eax,[to]
ret
endp
;==============================
public argc as '__argc'
public params as '__argv'
public path as '__path'
public memcpy
public memmove
section '.bss'
buf_len = 0x400
max_parameters=0x20
argc rd 1
argv rd max_parameters
path rb buf_len
params rb buf_len
;section '.data'
;include_debug_strings ; ALWAYS present in data section