Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sparc / net / bpf_jit.h

diff --git a/kernel/arch/sparc/net/bpf_jit.h b/kernel/arch/sparc/net/bpf_jit.h
new file mode 100644 (file)
index 0000000..33d6b37
--- /dev/null
+++ b/kernel/arch/sparc/net/bpf_jit.h
@@ -0,0 +1,68 @@
+#ifndef _BPF_JIT_H
+#define _BPF_JIT_H
+
+/* Conventions:
+ *  %g1 : temporary
+ *  %g2 : Secondary temporary used by SKB data helper stubs.
+ *  %g3 : packet offset passed into 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->len - skb->data_len
+ *  %o5 : skb->data
+ */
+
+#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
+
+/* assembly code in arch/sparc/net/bpf_jit_asm.S */
+extern u32 bpf_jit_load_word[];
+extern u32 bpf_jit_load_half[];
+extern u32 bpf_jit_load_byte[];
+extern u32 bpf_jit_load_byte_msh[];
+extern u32 bpf_jit_load_word_positive_offset[];
+extern u32 bpf_jit_load_half_positive_offset[];
+extern u32 bpf_jit_load_byte_positive_offset[];
+extern u32 bpf_jit_load_byte_msh_positive_offset[];
+extern u32 bpf_jit_load_word_negative_offset[];
+extern u32 bpf_jit_load_half_negative_offset[];
+extern u32 bpf_jit_load_byte_negative_offset[];
+extern u32 bpf_jit_load_byte_msh_negative_offset[];
+
+#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 */