BPF_R4           1448 kernel/bpf/core.c 						       BPF_R4, BPF_R5);
BPF_R4           1453 kernel/bpf/core.c 							    BPF_R3, BPF_R4,
BPF_R4           1590 kernel/bpf/core.c 	BPF_R4 = r4; \