diff options
| author | Mircea Gherzan <mgherzan@gmail.com> | 2012-06-12 00:52:25 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-06-14 16:12:13 +0200 |
| commit | 2bea29b774ccb4bf32c7b299c677fccc5a1d8443 (patch) | |
| tree | e4a5d721352ba8c34bb93497df98ece573125317 /arch/arm/net | |
| parent | ARM: 7423/1: kprobes: run t32_simulate_ldr_literal() without insn slot (diff) | |
| download | linux-2bea29b774ccb4bf32c7b299c677fccc5a1d8443.tar.xz linux-2bea29b774ccb4bf32c7b299c677fccc5a1d8443.zip | |
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/arm/net')
| -rw-r--r-- | arch/arm/net/bpf_jit_32.c | 5 | ||||
| -rw-r--r-- | arch/arm/net/bpf_jit_32.h | 4 |
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 \ |