ARM: net: bpf_jit_32: add XOR instruction for BPF JIT

[~andy/linux] / arch / arm / net / bpf_jit_32.c

diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index c641fb6850170be36e7e47846a0fe4562af4fc52..8be702de34f98b44592fe2640d50cb5bf3ea9991 100644 (file)
--- 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;