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Programa ARM64 - Calcular el promedio de las calificaciones de Nancy (95, 68, 92, 88).
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/* | |
* --------------------------------------------------------------------------------- | |
* Lenguajes de Interfaz en TECNM Campus ITT | |
* Autor: Jocelyn Alvarez Paniagua | |
* Fecha: 2025-04-10 | |
* Descripción: Calcular el promedio de las calificaciones de Nancy (95, 68, 92, 88). | |
* Demostración: [ https://asciinema.org/a/bArAYLZyMJvcD1ZqM6a4Uk9YB ] | |
* --------------------------------------------------------------------------------- | |
*/ | |
.global _start | |
.section .data | |
mensaje: .asciz "El promedio de Nancy es: " | |
newline: .asciz "\n" | |
buffer: .skip 32 | |
.section .text | |
_start: | |
// Sumar las calificaciones: 95 + 68 + 92 + 88 = 343 | |
mov x20, #95 | |
mov x21, #68 | |
mov x22, #92 | |
mov x23, #88 | |
add x24, x20, x21 // x24 = 95 + 68 | |
add x24, x24, x22 // x24 += 92 | |
add x24, x24, x23 // x24 += 88 → total = 343 | |
// Calcular el promedio (entero): promedio = total / 4 | |
mov x1, #4 | |
udiv x25, x24, x1 // x25 = promedio | |
// Imprimir mensaje | |
mov x0, #1 | |
ldr x1, =mensaje | |
mov x2, #28 | |
mov x8, #64 | |
svc #0 | |
// Convertir promedio a ASCII e imprimir | |
mov x0, x25 | |
bl int_to_ascii | |
mov x0, #1 | |
ldr x1, =buffer | |
mov x2, x23 | |
mov x8, #64 | |
svc #0 | |
// Salto de línea | |
mov x0, #1 | |
ldr x1, =newline | |
mov x2, #1 | |
mov x8, #64 | |
svc #0 | |
// Salir | |
mov x0, #0 | |
mov x8, #93 | |
svc #0 | |
// -------------------------------------------------------- | |
// Función: int_to_ascii | |
// Convierte número en x0 a ASCII en 'buffer' y devuelve longitud en x23 | |
// -------------------------------------------------------- | |
int_to_ascii: | |
mov x1, x0 | |
ldr x2, =buffer | |
add x2, x2, #31 // empezamos desde el final del buffer | |
mov x23, #0 | |
itoa_loop: | |
mov x3, #10 | |
udiv x4, x1, x3 | |
msub x5, x4, x3, x1 | |
add x5, x5, #'0' | |
strb w5, [x2] | |
sub x2, x2, #1 | |
add x23, x23, #1 | |
mov x1, x4 | |
cmp x1, #0 | |
bne itoa_loop | |
add x2, x2, #1 | |
mov x3, #0 | |
ldr x5, =buffer | |
copy_ascii: | |
ldrb w6, [x2, x3] | |
strb w6, [x5, x3] | |
add x3, x3, #1 | |
cmp x3, x23 | |
blt copy_ascii | |
ret |
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