XSETBV

XSAVE XSAVE x86_64

2 encoding forms.

X86_XSETBV_X86_LEGACY_0F_01_0
(no syntax)
X86_LEGACY 01 XSAVE
XED_XSETBV_X86_LEGACY_0F_01_855961
REG0=XED_REG_ECX:r:SUPP REG1=XED_REG_EDX:r:SUPP REG2=XED_REG_EAX:r:SUPP REG3=XED_REG_XCR0:w:SUPP
X86_LEGACY 01 /2 XSAVE