REG_ARG2           30 arch/sh/kernel/signal_64.c #define REG_ARG2 3
REG_ARG2           39 samples/seccomp/bpf-direct.c #define REG_ARG2	REG_EDX
REG_ARG2           48 samples/seccomp/bpf-direct.c #define REG_ARG2	REG_RDX