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