use core::arch::asm; /// Enable FPU in the current core. pub fn enable_fpu() { unsafe { asm!(" mrc p15, 0, r1, c1, c0, 2 orr r1, r1, (0b1111<<20) mcr p15, 0, r1, c1, c0, 2 vmrs r1, fpexc orr r1, r1, (1<<30) vmsr fpexc, r1 ", options(nomem, nostack)); } }