WRGSBASE

RDWRFSGS RDWRFSGS x86_64

2 encoding forms.

X86_WRGSBASE_X86_LEGACY_0F_AE_464543
ry
X86_LEGACY AE /3 FSGSBASE
XED_WRGSBASE_X86_LEGACY_0F_AE_323058
REG0=GPRy_B():r REG1=XED_REG_GSBASE:w:SUPP:y
X86_LEGACY AE /3 RDWRFSGS