Wrong assembly generated for: "movk x1, 0x30, lsl #16" (ARM64)

[dezmondc8]

I have attached an example comparing the assembly generated by kstool (keystone) and rasm2 for two instructions:

1. "movk x1, 0x30"
2. "movk x1, 0x30, lsl fix build on mips using android ndk r8 #16"

$ ./kstool arm64 "movk x1, 0x30"
movk x1, 0x30 = [ 01 06 80 f2 ]
$ ../../../../../bin/rasm2 -a arm -b 64 "movk x1, 0x30"
010680f2

$ ./kstool arm64 "movk x1, 0x30, lsl 16"
movk x1, 0x30, lsl 16 = [ 01 06 a0 f2 ]
$ ../../../../../bin/rasm2 -a arm -b 64 "movk x1, 0x30, lsl 16"
010680f2

rasm2 treats the second instruction no differently than the first instruction, while kstool is able to generate the correct assembly code for the second instruction.

I would also add that disassembly works well for the instruction generated by kstool:

$ ../../../../../bin/rasm2 -d -a arm -b 64 0106a0f2
movk x1, 0x30, lsl 16