Message ID | 1338881190.2760.1992.camel@edumazet-glaptop |
---|---|
State | Accepted, archived |
Delegated to: | David Miller |
Headers | show |
From: Eric Dumazet <eric.dumazet@gmail.com> Date: Tue, 05 Jun 2012 09:26:30 +0200 > From: Eric Dumazet <edumazet@google.com> > > 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> Applied, thanks Eric. I'll take care of Sparc. ARM and POWERPC folks, this is just a reminder for you guys to do this too. Adding support for XOR to your JITs ought to be quite trivial. Thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 0597f95..2cf6ce3 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 */