net: filter: Just In Time compiler for sparc
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/net/bpf_jit.h b/arch/sparc/net/bpf_jit.h
new file mode 100644
index 0000000..74f048b
--- /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 */