; ***********************************************************************
; *  File : lab8.asm
; *  Author : your name here
; *  Description: This program searches an array
; ***********************************************************************
.386
.MODEL FLAT
ExitProcess PROTO NEAR32 stdcall, dwExitCode:DWORD
PUBLIC _start   ; make procedure _start public
; ***********************************************************************
; *                     Data Segment
; ***********************************************************************
.DATA
query   DWORD   3               ; search query
arr DWORD 1,2,3,4,5,1,3,5,7,9           ; creating array of 10 4-byte DWORDs
found   DWORD   0               ; 1 if query located in array, otherwise 0
index   DWORD   0               ; index of first appearance of query in array
count   DWORD   0               ; number of times query appears in array; ***********************************************************************
; *                     Stack Segment
; ***********************************************************************
.STACK  4096
; ***********************************************************************
; *                     Code Segment
; ***********************************************************************
.CODE
_start  PROC    NEAR32    ; start procedure called _start
;
        mov esi, arr                ; esi = arr
        mov edx, 0                      ; edx = 0
_loop:
        mov eax, [esi + edx * 4]        ; eax = array[edx *4]
        inc edx                 ; edx = edx + 1
        cmp ecx, query              ; compare ecx & query
        je _equal               ; if ecx == query, jump to _equal
        cmp edx, 10             ; compare edx & 10
        je _loop                ; if edx == 10, jump to _loop

_equal:
        mov found, 1                ; found = 1
        cmp index, 0                ; compare index & 0
        je _set_index               ; if index == 0, jump to _set_index
        cmp edx, 10             ; compare edx & 10
        je _loop                ; if edx == 10, jump to _loop

_set_index:
        mov index, edx              ; index = edx
        cmp edx, 10             ; compare edx & 10
        je _loop                ; if edx == 10, jump to _loop
;
;
EVEN            ; Make rest of code aligned on an even-addressed byte
exit:   INVOKE  ExitProcess, 0  ; like return( 0 ); in C
_start  ENDP                    ; end procedure _start
        END