s390/bpf,jit: add support for BPF_S_ANC_ALU_XOR_X instruction

Add support for new BPF_S_ANC_ALU_XOR_X instruction which got added with ffe06c1 "filter: add XOR operation". s390 version of 4bfaddf "x86 bpf_jit: support BPF_S_ANC_ALU_XOR_X instruction". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
mariux64 · Sep 26, 2012 · c59eed1 · c59eed1
1 parent 0229125
commit c59eed1
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
@@ -367,6 +367,11 @@ static int bpf_jit_insn(struct bpf_jit *jit, struct sock_filter *filter,
 			/* o %r5,<d(K)>(%r13) */
 			EMIT4_DISP(0x5650d000, EMIT_CONST(K));
 		break;
+	case BPF_S_ANC_ALU_XOR_X: /* A ^= X; */
+		jit->seen |= SEEN_XREG;
+		/* xr %r5,%r12 */
+		EMIT2(0x175c);
+		break;
 	case BPF_S_ALU_LSH_X: /* A <<= X; */
 		jit->seen |= SEEN_XREG;
 		/* sll %r5,0(%r12) */