WRFFLAGS

Operation

Write the accrued floating-point exception flags from an Rn register.

Assembler Syntax

WRFFLAGS Rn(s)

Privilege

Unprivileged

Required CPUID flags

FP

WRFFLAGS writes the architectural FFLAGS register from the low source bits. Reserved FFLAGS bits must be zero. WRFFLAGS requires the floating-point extension.

2.75in

Encodings

WRFFLAGS Rn(s)

Format: Instruction format for WRFFLAGS Rn(s)