diff options
| author | Daniel Borkmann <dxchgb@gmail.com> | 2012-11-07 19:28:28 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-14 03:21:10 +0400 |
| commit | 3cbe20412ef4656169e09ea40ec47f973ad99a92 (patch) | |
| tree | ba2c9581a170933dc4a65ffe9bde5847bd10e966 /arch/arm/net/bpf_jit_32.c | |
| parent | 910cc727bf5cba11ce51be86fa2fb2454b10f3d9 (diff) | |
| download | linux-3cbe20412ef4656169e09ea40ec47f973ad99a92.tar.xz | |
ARM: net: bpf_jit_32: add XOR instruction for BPF JIT
This patch is a follow-up for patch "filter: add XOR instruction for use
with X/K" that implements BPF ARM JIT parts for the BPF XOR operation.
Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch>
Cc: Mircea Gherzan <mgherzan@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mircea Gherzan <mgherzan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arm/net/bpf_jit_32.c')
| -rw-r--r-- | arch/arm/net/bpf_jit_32.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index c641fb685017..8be702de34f9 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -646,6 +646,16 @@ load_ind: update_on_xread(ctx); emit(ARM_ORR_R(r_A, r_A, r_X), ctx); break; + case BPF_S_ALU_XOR_K: + /* A ^= K; */ + OP_IMM3(ARM_EOR, r_A, r_A, k, ctx); + break; + case BPF_S_ANC_ALU_XOR_X: + case BPF_S_ALU_XOR_X: + /* A ^= X */ + update_on_xread(ctx); + emit(ARM_EOR_R(r_A, r_A, r_X), ctx); + break; case BPF_S_ALU_AND_K: /* A &= K */ OP_IMM3(ARM_AND, r_A, r_A, k, ctx); @@ -762,11 +772,6 @@ b_epilogue: update_on_xread(ctx); emit(ARM_MOV_R(r_A, r_X), ctx); break; - case BPF_S_ANC_ALU_XOR_X: - /* A ^= X */ - update_on_xread(ctx); - emit(ARM_EOR_R(r_A, r_A, r_X), ctx); - break; case BPF_S_ANC_PROTOCOL: /* A = ntohs(skb->protocol) */ ctx->seen |= SEEN_SKB; |