x86 Assembly Language Reference Manual

Exit Print View

Updated: December 2014
 
 

3.4 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 3-20  SIMD State Management Instructions
Oracle 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