ref: fb7dd4b3a868cb8987049c95bb32e6425a73c8b9 dir: /libkern/getfcr-arm.s/
TEXT setfcr(SB), $0 RET TEXT getfcr(SB), $0 RET TEXT getfsr(SB), $0 RET TEXT setfsr(SB), $0 RET