SWAPGS

SYSTEM LONGMODE x86_64

2 encoding forms.

X86_SWAPGS_X86_LEGACY_0F_01_0
(no syntax)
X86_LEGACY 01
XED_SWAPGS_X86_LEGACY_0F_01_690094
REG0=XED_REG_GSBASE:rw:SUPP
X86_LEGACY 01 /7 LONGMODE