From 2809a2087cc44b55e4377d7b9be3f7f5d2569091 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 15 Apr 2012 20:06:27 -0700 Subject: net: filter: Just In Time compiler for sparc Signed-off-by: David S. Miller --- arch/sparc/net/bpf_jit.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 arch/sparc/net/bpf_jit.h (limited to 'arch/sparc/net/bpf_jit.h') 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 */ -- cgit v1.2.3