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authorMircea Gherzan <mgherzan@gmail.com>2012-06-11 23:52:25 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-06-14 15:12:13 +0100
commit2bea29b774ccb4bf32c7b299c677fccc5a1d8443 (patch)
treee4a5d721352ba8c34bb93497df98ece573125317 /arch
parent2307574a50dcb0f9c13e541ca3a196f7554af977 (diff)
downloadlinux-linaro-stable-2bea29b774ccb4bf32c7b299c677fccc5a1d8443.tar.gz
ARM: 7421/1: bpf_jit: BPF_S_ANC_ALU_XOR_X support
JIT support for the XOR operation introduced by the commit ffe06c17afbb. Signed-off-by: Mircea Gherzan <mgherzan@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/net/bpf_jit_32.c5
-rw-r--r--arch/arm/net/bpf_jit_32.h4
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index 62135849f48b..c641fb685017 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -762,6 +762,11 @@ 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;
diff --git a/arch/arm/net/bpf_jit_32.h b/arch/arm/net/bpf_jit_32.h
index 99ae5e3f46d2..7fa2f7d3cb90 100644
--- a/arch/arm/net/bpf_jit_32.h
+++ b/arch/arm/net/bpf_jit_32.h
@@ -68,6 +68,8 @@
#define ARM_INST_CMP_R 0x01500000
#define ARM_INST_CMP_I 0x03500000
+#define ARM_INST_EOR_R 0x00200000
+
#define ARM_INST_LDRB_I 0x05d00000
#define ARM_INST_LDRB_R 0x07d00000
#define ARM_INST_LDRH_I 0x01d000b0
@@ -132,6 +134,8 @@
#define ARM_CMP_R(rn, rm) _AL3_R(ARM_INST_CMP, 0, rn, rm)
#define ARM_CMP_I(rn, imm) _AL3_I(ARM_INST_CMP, 0, rn, imm)
+#define ARM_EOR_R(rd, rn, rm) _AL3_R(ARM_INST_EOR, rd, rn, rm)
+
#define ARM_LDR_I(rt, rn, off) (ARM_INST_LDR_I | (rt) << 12 | (rn) << 16 \
| (off))
#define ARM_LDRB_I(rt, rn, off) (ARM_INST_LDRB_I | (rt) << 12 | (rn) << 16 \