SYSENTER

SYSCALL SEP x86_64

2 encoding forms.

X86_SYSENTER_X86_LEGACY_0F_34_0
(no syntax)
X86_LEGACY 34
XED_SYSENTER_X86_LEGACY_0F_34_389003
REG0=XED_REG_EIP:w:SUPP REG1=XED_REG_ESP:w:SUPP REG0=XED_REG_RIP:w:SUPP REG1=XED_REG_RSP:w:SUPP
X86_LEGACY 34 0F 34 SEP