1 subprimitives are arm64 bytes
6 CALLBACK-STUB jit-define gets called first
7 set 9999 BRK to break there in lldb
9 run -i=boot.unix-arm.64.image
14 rel- relocations aka fixups
15 rel-vm relocation for vm in sidetable
17 relocation addresses are 64bit
18 look at powerpc backend
19 return a 64bit value in a register