- sys_calls[offset++] = 0xe30f2803; // movw r2, #0xf803
- sys_calls[offset++] = 0xe3a00002; // mov r0, #2
- sys_calls[offset++] = 0xe34f2fff; // movt r2, #0xffff
- sys_calls[offset++] = 0xe34f0ff4; // movt r0, #0xfff4
+ sys_calls[offset++] = 0xe3e020fc; // mvn r2, #252
+ sys_calls[offset++] = 0xe3c22c07; // bic r2, r2, #1792
+ sys_calls[offset++] = 0xe59f0008; // ldr r0, [pc, #8]