提交 cec08315 编写于 作者: A Alexei Starovoitov 提交者: David S. Miller

sparc: bpf_jit: add support for BPF_LD(X) | BPF_LEN instructions

BPF_LD | BPF_W | BPF_LEN instruction is occasionally used by tcpdump
and present in 11 tests in lib/test_bpf.c
Teach sparc JIT compiler to emit it.
Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 0a29b3da
......@@ -624,7 +624,12 @@ void bpf_jit_compile(struct bpf_prog *fp)
emit_and(r_A, r_TMP, r_A);
}
break;
case BPF_LD | BPF_W | BPF_LEN:
emit_skb_load32(len, r_A);
break;
case BPF_LDX | BPF_W | BPF_LEN:
emit_skb_load32(len, r_X);
break;
case BPF_LD | BPF_IMM:
emit_loadimm(K, r_A);
break;
......
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