RDTSC

SYSTEM PENTIUMREAL x86_64

1 encoding form.

XED_RDTSC_X86_LEGACY_0F_31_556131
REG0=XED_REG_EAX:w:SUPP REG1=XED_REG_EDX:w:SUPP REG2=XED_REG_TSC:r:SUPP
X86_LEGACY 31 PENTIUMREAL