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011.asm
77 lines (69 loc) · 3.46 KB
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011.asm
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section .data
msg db "%d", 10, 0 ;return string for printf (just the result)
grid dd 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
dd 08,02,22,97,38,15,00,40,00,75,04,05,07,78,52,12,50,77,91,08,00
dd 49,49,99,40,17,81,18,57,60,87,17,40,98,43,69,48,04,56,62,00,00
dd 81,49,31,73,55,79,14,29,93,71,40,67,53,88,30,03,49,13,36,65,00
dd 52,70,95,23,04,60,11,42,69,24,68,56,01,32,56,71,37,02,36,91,00
dd 22,31,16,71,51,67,63,89,41,92,36,54,22,40,40,28,66,33,13,80,00
dd 24,47,32,60,99,03,45,02,44,75,33,53,78,36,84,20,35,17,12,50,00
dd 32,98,81,28,64,23,67,10,26,38,40,67,59,54,70,66,18,38,64,70,00
dd 67,26,20,68,02,62,12,20,95,63,94,39,63,08,40,91,66,49,94,21,00
dd 24,55,58,05,66,73,99,26,97,17,78,78,96,83,14,88,34,89,63,72,00
dd 21,36,23,09,75,00,76,44,20,45,35,14,00,61,33,97,34,31,33,95,00
dd 78,17,53,28,22,75,31,67,15,94,03,80,04,62,16,14,09,53,56,92,00
dd 16,39,05,42,96,35,31,47,55,58,88,24,00,17,54,24,36,29,85,57,00
dd 86,56,00,48,35,71,89,07,05,44,44,37,44,60,21,58,51,54,17,58,00
dd 19,80,81,68,05,94,47,69,28,73,92,13,86,52,17,77,04,89,55,40,00
dd 04,52,08,83,97,35,99,16,07,97,57,32,16,26,26,79,33,27,98,66,00
dd 88,36,68,87,57,62,20,72,03,46,33,67,46,55,12,32,63,93,53,69,00
dd 04,42,16,73,38,25,39,11,24,94,72,18,08,46,29,32,40,62,76,36,00
dd 20,69,36,41,72,30,23,88,34,62,99,69,82,67,59,85,74,04,36,16,00
dd 20,73,35,29,78,31,90,01,74,31,49,71,48,86,81,16,23,57,05,54,00
dd 01,70,54,71,83,51,54,69,16,92,33,48,61,43,52,01,89,19,67,48,00
dd 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
section .text
extern printf
global main
main:
mov ebx, 21 ;array index
xor ecx, ecx ;max
products:
mov eax, [grid + 4 * ebx] ;horizontal
mul dword [grid + 4 * (ebx + 1)]
mul dword [grid + 4 * (ebx + 2)]
mul dword [grid + 4 * (ebx + 3)]
call setmax ;update max
mov eax, [grid + 4 * ebx] ;vertical
mul dword [grid + 4 * (ebx + 20)]
mul dword [grid + 4 * (ebx + 40)]
mul dword [grid + 4 * (ebx + 60)]
call setmax ;update max
mov eax, [grid + 4 * ebx] ;diagonal up
mul dword [grid + 4 * (ebx - 19)]
mul dword [grid + 4 * (ebx - 38)]
mul dword [grid + 4 * (ebx - 57)]
call setmax ;update max
mov eax, [grid + 4 * ebx] ;diagonal down
mul dword [grid + 4 * (ebx + 21)]
mul dword [grid + 4 * (ebx + 42)]
mul dword [grid + 4 * (ebx + 63)]
call setmax ;update max
inc ebx ;next index
cmp ebx, 440 ;check if we reached end of grid
jl products ;if not, continue with next index
print: ;printing routine, differs slightly from OS to OS
push rbp
mov edi, msg
mov esi, ecx
call printf
pop rbp
exit: ;exit routine, dito
mov eax, 1
xor edi, edi
syscall
setmax:
cmp eax, ecx ;current product > max
cmovg ecx, eax ;if yes, replace max
ret
section .note.GNU-stack ;just for gcc