ref: a524fd06466b057638d8bf40f8f9f380033320fe dir: /sys/src/ape/lib/9/arm/getfcr.s/
TEXT setfcr(SB), $4 MOVW R0, FPCR RET TEXT getfcr(SB), $4 MOVW FPCR, R0 RET TEXT getfsr(SB), $0 MOVW FPSR, R0 RET TEXT setfsr(SB), $0 MOVW R0, FPSR RET