_R5
gdb_regs[_R5] = ti->cpu_context.r5;
EMIT(PPC_RAW_ADDI(_R5, _R1, run_ctx_off));
EMIT(PPC_RAW_MR(_R1, _R5));
EMIT(PPC_RAW_LD(bpf_to_ppc(TMP_REG_1), _R5, 0));
ctx->b2p[BPF_REG_3] = _R5;