summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/net/bpf_jit_comp.c
diff options
context:
space:
mode:
authorDaniel Borkmann <dxchgb@gmail.com>2012-11-08 11:39:41 +0000
committerDavid S. Miller <davem@davemloft.net>2012-11-17 22:12:47 -0500
commit02871903a1fcdf306a906c38566ca0d48a45a431 (patch)
treeed61bd5960d1eded043f1d1e6cf73995e06d83b9 /arch/powerpc/net/bpf_jit_comp.c
parent18d359ceb04485df0e387e04b0e52a761c4c58a0 (diff)
downloadblackbird-op-linux-02871903a1fcdf306a906c38566ca0d48a45a431.tar.gz
blackbird-op-linux-02871903a1fcdf306a906c38566ca0d48a45a431.zip
PPC: net: bpf_jit_comp: 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 PowerPC JIT parts for the BPF XOR operation. Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch> Cc: Matt Evans <matt@ozlabs.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Matt Evans <matt@ozlabs.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/powerpc/net/bpf_jit_comp.c')
-rw-r--r--arch/powerpc/net/bpf_jit_comp.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
index dd1130642d07..b9434de8222b 100644
--- a/arch/powerpc/net/bpf_jit_comp.c
+++ b/arch/powerpc/net/bpf_jit_comp.c
@@ -232,6 +232,17 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image,
if (K >= 65536)
PPC_ORIS(r_A, r_A, IMM_H(K));
break;
+ case BPF_S_ANC_ALU_XOR_X:
+ case BPF_S_ALU_XOR_X: /* A ^= X */
+ ctx->seen |= SEEN_XREG;
+ PPC_XOR(r_A, r_A, r_X);
+ break;
+ case BPF_S_ALU_XOR_K: /* A ^= K */
+ if (IMM_L(K))
+ PPC_XORI(r_A, r_A, IMM_L(K));
+ if (K >= 65536)
+ PPC_XORIS(r_A, r_A, IMM_H(K));
+ break;
case BPF_S_ALU_LSH_X: /* A <<= X; */
ctx->seen |= SEEN_XREG;
PPC_SLW(r_A, r_A, r_X);
OpenPOWER on IntegriCloud