FYL2XP1

X87_ALU X87 x86_64

2 encoding forms.

X86_FYL2XP1_X86_LEGACY_ONEBYTE_D9_0
(no syntax)
X86_LEGACY D9 FPU
XED_FYL2XP1_X86_LEGACY_ONEBYTE_D9_496741
REG0=XED_REG_ST0:r:SUPP:f80 REG1=XED_REG_ST1:rw:SUPP:f80 REG2=XED_REG_X87POP:r:SUPP REG3=XED_REG_X87STATUS:w:SUPP
X86_LEGACY D9 /7 X87