SIMD State Management Instructions

The fxsave and fxrstor instructions save and restore the state of the floating-point unit and the MMX, XMM, and MXCSR registers.

Table 3–19 SIMD State Management Instructions

Solaris Mnemonic	Intel/AMD Mnemonic	Description	Notes
fxrstor	FXRSTOR	restore floating-point unit and SIMD state
fxsave	FXSAVE	save floating-point unit and SIMD state