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| author | David S. Miller <davem@davemloft.net> | 2012-04-16 07:06:27 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-17 07:15:14 +0400 |
| commit | 2809a2087cc44b55e4377d7b9be3f7f5d2569091 (patch) | |
| tree | c868c86ae407b6efc5aac3630ba0244de2eb672d /arch/sparc/net/bpf_jit.h | |
| parent | f4f9f6e75d67ddfcfea79a2108217bc654aef3af (diff) | |
| download | linux-2809a2087cc44b55e4377d7b9be3f7f5d2569091.tar.xz | |
net: filter: Just In Time compiler for sparc
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/net/bpf_jit.h')
| -rw-r--r-- | arch/sparc/net/bpf_jit.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/sparc/net/bpf_jit.h b/arch/sparc/net/bpf_jit.h new file mode 100644 index 000000000000..74f048be739c --- /dev/null +++ b/arch/sparc/net/bpf_jit.h @@ -0,0 +1,52 @@ +#ifndef _BPF_JIT_H +#define _BPF_JIT_H + +/* Conventions: + * %g1 : temporary + * %g2 : Secondary temporary used by SKB data helper stubs. + * %o0 : pointer to skb (first argument given to JIT function) + * %o1 : BPF A accumulator + * %o2 : BPF X accumulator + * %o3 : Holds saved %o7 so we can call helper functions without needing + * to allocate a register window. + * %o4 : skb->data + * %o5 : skb->len - skb->data_len + */ + +#ifndef __ASSEMBLER__ +#define G0 0x00 +#define G1 0x01 +#define G3 0x03 +#define G6 0x06 +#define O0 0x08 +#define O1 0x09 +#define O2 0x0a +#define O3 0x0b +#define O4 0x0c +#define O5 0x0d +#define SP 0x0e +#define O7 0x0f +#define FP 0x1e + +#define r_SKB O0 +#define r_A O1 +#define r_X O2 +#define r_saved_O7 O3 +#define r_HEADLEN O4 +#define r_SKB_DATA O5 +#define r_TMP G1 +#define r_TMP2 G2 +#define r_OFF G3 +#else +#define r_SKB %o0 +#define r_A %o1 +#define r_X %o2 +#define r_saved_O7 %o3 +#define r_HEADLEN %o4 +#define r_SKB_DATA %o5 +#define r_TMP %g1 +#define r_TMP2 %g2 +#define r_OFF %g3 +#endif + +#endif /* _BPF_JIT_H */ |