RDFFLAGS

Operation

Read the accrued floating-point exception flags into an Rn register.

Assembler Syntax

RDFFLAGS Rn(d)

Privilege

Unprivileged

Required CPUID flags

FP

RDFFLAGS reads the architectural FFLAGS register, zero-extends it to the destination register, and writes only that destination. RDFFLAGS requires the floating-point extension.

2.75in

Encodings

RDFFLAGS Rn(d)

Format: Instruction format for RDFFLAGS Rn(d)