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December 28, 2018 08:23
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Shortest Code to Sort 3 Numbers known to man?
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%include "asm_io.inc" | |
extern _printf | |
segment data align=4 class=data use32 | |
EnterOne db "Enter number 1: ", 0 | |
EnterTwo db "Enter number 2: ", 0 | |
EnterThree db "Enter number 3: ", 0 | |
FormattedAnswer db "%d %d %d", 0 | |
segment bss align=4 class=bss use32 | |
_a resd 1 | |
_b resd 1 | |
_c resd 1 | |
segment text align=1 class=code use32 | |
global _main | |
_main: | |
enter 0, 0 ; setup routine | |
pusha | |
enter_number_one: | |
mov eax, EnterOne | |
call print_string ; printf("Enter number 1: "); | |
call read_int ; scanf("%d", &a); | |
mov [_a], eax | |
enter_number_two: | |
mov eax, EnterTwo | |
call print_string ; printf("Enter number 2: "); | |
call read_int ; scanf("%d", &b); | |
mov [_b], eax | |
enter_number_three: | |
mov eax, EnterThree | |
call print_string ; printf("Enter number 3: "); | |
call read_int ; scanf("%d", &c); | |
mov [_c], eax | |
load: | |
mov eax, [_a] | |
mov ebx, [_b] | |
mov ecx, [_c] | |
move1: | |
cmp eax, ebx | |
jle move2 | |
xchg eax, ebx | |
move2: | |
cmp eax, ecx | |
jle move3 | |
xchg eax, ecx | |
move3: | |
cmp ebx, ecx | |
jle print_result | |
xchg ebx, ecx | |
print_result: | |
push ecx | |
push ebx | |
push eax | |
push FormattedAnswer | |
call _printf | |
add esp, 10h | |
call print_nl | |
popa | |
mov eax, 0 | |
mov ebx, 0 | |
mov ecx, 0 | |
leave | |
ret |
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#include <stdio.h> | |
inline void xchg(void *v1, void *v2) | |
{ | |
__asm__ (\ | |
"movl %0, %%eax\n"\ | |
"movl %1, %%ebx\n"\ | |
"xchgl %%ebx, %%eax\n"\ | |
"movl %%eax, %0\n"\ | |
"movl %%ebx, %1\n"\ | |
: : "r"(v1), "r" (v2)); | |
} | |
int main() | |
{ | |
int a, b, c; | |
enter_number_one: | |
printf("Enter number 1: "); | |
scanf("%d", &a); | |
enter_number_two: | |
printf("Enter number 2: "); | |
scanf("%d", &b); | |
enter_number_three: | |
printf("Enter number 3: "); | |
scanf("%d", &c); | |
move1: | |
if (a > b) | |
xchg(a, b); | |
move2: | |
if (a > c) | |
xchg(a, c); | |
move3: | |
if (b > c) | |
xchg(b, c); | |
print_result: | |
printf("%d %d %d\n", a, b, c); | |
return 0; | |
} |
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