ref: c4603260f8736dbea8d7f47c46e8db0cf1a23fa0 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