#pragma GCC optimize ("Og")
#include "ArduinoTrace.h"

volatile int8_t x, y, z, w;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("INICIO");

  //--------------------------------------------------------

  asm volatile
  (
    "ldi r16, 3 \n" // r16 <-- 3
    "sts x, r16 \n" // x <-- 3
    "ldi r16, 4 \n" // r16 <-- 4
    "sts y, r16" // y <-- 4
  );

  asm goto
  (
    "lds r16, x \n" // r16 <-- (x)
    "lds r17, y \n" // r17 <-- (y)
    "cp r17, r16 \n" // comaparar (y) con (x)
    "brge %l[condTrue] \n" // (y) >= (x) == (x) <= (y) --> goto condTrue
    "jmp %l[condFalse]" // (x) > (y) --> goto condFalse
    ::::condTrue, condFalse
  );

  condTrue:
  asm goto
  (
    "lds r16, x \n" // r16 <-- (x)
    "lds r17, y \n" // r17 <-- (y)
    "add r16, r17 \n" // r16 <-- (x) + (y)
    "sts z, r16 \n" // z <-- (x) + (y)
    "jmp %l[endif]" // goto endif
    ::::endif
  );

  condFalse:
  asm goto
  (
    "lds r16, x \n" // r16 <-- (x)
    "lds r17, y \n" // r17 <-- (y)
    "sub r16, r17 \n" // r16 <-- (x) - (y)
    "sts w, r16 \n" // w <-- (x) - (y)
    "jmp %l[endif]" // saltar a endif
    ::::endif
  );
 
  endif:
  DUMP(x);
  DUMP(y);
  DUMP(z);
  DUMP(w);

  //--------------------------------------------------------
}
void loop() {

}