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| author | Eric Dumazet <edumazet@google.com> | 2012-06-04 21:26:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-06 09:42:44 -0700 |
| commit | 4bfaddf15bac7afa7048d105864dab65c5d1f9e7 (patch) | |
| tree | e545e7e21fc521c7f81230476747b32557f7be73 /arch/x86/net | |
| parent | c2fd03a0115a244c5f622453b2b1f038ed5700a6 (diff) | |
| download | op-kernel-dev-4bfaddf15bac7afa7048d105864dab65c5d1f9e7.zip op-kernel-dev-4bfaddf15bac7afa7048d105864dab65c5d1f9e7.tar.gz | |
x86 bpf_jit: support BPF_S_ANC_ALU_XOR_X instruction
commit ffe06c17afbb (filter: add XOR operation) added generic support
for XOR operation.
This patch implements the XOR instruction in x86 jit.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/net')
| -rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 0597f95..33643a8 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -309,6 +309,10 @@ void bpf_jit_compile(struct sk_filter *fp) else EMIT1_off32(0x0d, K); /* or imm32,%eax */ break; + case BPF_S_ANC_ALU_XOR_X: /* A ^= X; */ + seen |= SEEN_XREG; + EMIT2(0x31, 0xd8); /* xor %ebx,%eax */ + break; case BPF_S_ALU_LSH_X: /* A <<= X; */ seen |= SEEN_XREG; EMIT4(0x89, 0xd9, 0xd3, 0xe0); /* mov %ebx,%ecx; shl %cl,%eax */ |
