I finally got some systemz binaries to test this disassembler and realized that it is not handling almost 50% of the instructions. Most worrying ones are SVC or branches.. which makes it completely useless.

I have checked the last LLVM source code and seems to be fine, so it is important to update the systemz disassembler in capstone, Here there are some examples:

• 90ECD00C STM R14,R12,X'C'(R13)
• 47F08072 B X'72'(,R8)
• 0700 NOPR 0 (capstone disassemblmes this as bcr 0, r0)
• ....