bpf_get_reg64_offset
return bpf_get_reg64_offset(reg, tmp, 0, ctx);
reg = bpf_get_reg64_offset(regmap[BPF_REG_5], tmp, offset_sp, ctx);
reg = bpf_get_reg64_offset(regmap[BPF_REG_4], tmp, offset_sp, ctx);
reg = bpf_get_reg64_offset(regmap[BPF_REG_3], tmp, offset_sp, ctx);
reg = bpf_get_reg64_offset(regmap[BPF_REG_2], tmp, offset_sp, ctx);
reg = bpf_get_reg64_offset(regmap[BPF_REG_1], tmp, offset_sp, ctx);