ref: 8188b4f4f0e07b6669e6ae3c6c1099af917eaab4
dir: /sys/src/libc/arm64/getfcr.s/
#define SYSARG5(op0,op1,Cn,Cm,op2) ((op0)<<19|(op1)<<16|(Cn)<<12|(Cm)<<8|(op2)<<5) #define FPCR SPR(SYSARG5(3,3,4,4,0)) #define FPSR SPR(SYSARG5(3,3,4,4,1)) TEXT setfcr(SB), 1, $-4 MSR R0, FPCR RETURN TEXT getfcr(SB), 1, $-4 MRS FPCR, R0 RETURN TEXT getfsr(SB), 1, $-4 MRS FPSR, R0 RETURN TEXT setfsr(SB), 1, $-4 MSR R0, FPSR RETURN