Ôóíêöèÿ äîëæíà âîçâðàùàòü 0, åñëè

AL                   - ðåçóëüòàò - áàéò
AX                   - ðåçóëüòàò - ñëîâî
EAX                 - ðåçóëüòàò – äâîéíîå ñëîâî
EDX, EAX       - ðåçóëüòàò – 2 äâîéíûõ ñëîâà
     Ïðèìåð 3.  Ñîñòàâèòü ôóíêöèþ äëÿ ñðàâíåíèÿ "äëèííûõ" ÷èñåë. Ôóíêöèÿ äîëæíà âîçâðàùàòü 0, åñëè ÷èñëà ñîâïàäàþò, 1 – åñëè ïåðâîå ÷èñëî áîëüøå âòîðîãî è –1 â ïðîòèâíîì ñëó÷àå.
ideal
p686
model   flat
extrn ExitProcess:proc
dataseg
x          dd        1000 dup (0ffffffffh)
n          dd        (n-x)/4
y          dd        1000 dup (0ffffffffh)
res       dd        ?
t1         dd        ?
t2         dd        ?
codeseg
begin:
push     [n] offset x offset y  
rdtsc
mov     ecx,eax
call      m_cmp
mov     [res], eax
rdtsc
sub       eax, ecx
mov     [t1], eax
push     [n] offset x offset y  
rdtsc
mov     ecx,eax
call      m_cmp
mov     [res], eax
rdtsc
sub       eax, ecx
mov     [t1], eax
push     [n] offset x offset y  
rdtsc
mov     ecx,eax
call      m_cmp1
mov     [res], eax
rdtsc
sub     eax,ecx
mov     [t2], eax
call ExitProcess
;for (i=n-1; i>=0; i--){                        ebp      0
;    if (x[i]>y[i]) return -1;      eip       4
;    if (x[i]<y[i]) return 1;        y          8
;}                                             x          12
;return 0;                                             n          16
proc     m_cmp
push ebp;
mov  ebp,  esp;
Push  ebx ecx edx
mov     ecx, [ebp+16]; n
mov     eax, [ebp+12]; &x
mov     ebx, [ebp+8] ; &y
fori:
mov     edx, [eax+ecx*4-4]
cmp     edx, [ebx+ecx*4-4]
jb         short m1; x[i]< y[i]
ja         short m2; x[i]> y[i]
loop     fori
sub       eax, eax
m1:
mov     eax, -1
jmp      short m3
m2:
mov     eax, 1
m3:
pop      edx ecx ebx ebp
Ret       12
Endp
proc     m_cmp1
push ebp;
mov  ebp,  esp;
Push   ecx esi edi
mov     ecx, [ebp+16]; n
mov     esi, [ebp+12]; &x
lea       esi, [esi + ecx*4-4]
mov     edi, [ebp+8] ; &y

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