projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 2809a208 DM |
1 | #ifndef _BPF_JIT_H |
| 2 | #define _BPF_JIT_H | |
| 3 | ||
| 4 | /* Conventions: | |
| 5 | * %g1 : temporary | |
| 6 | * %g2 : Secondary temporary used by SKB data helper stubs. | |
| 7b56f76e | 7 | * %g3 : packet offset passed into SKB data helper stubs. |
| 2809a208 DM |
8 | * %o0 : pointer to skb (first argument given to JIT function) |
| 9 | * %o1 : BPF A accumulator | |
| 10 | * %o2 : BPF X accumulator | |
| 11 | * %o3 : Holds saved %o7 so we can call helper functions without needing | |
| 12 | * to allocate a register window. | |
| 7b56f76e DM |
13 | * %o4 : skb->len - skb->data_len |
| 14 | * %o5 : skb->data | |
| 2809a208 DM |
15 | */ |
| 16 | ||
| 17 | #ifndef __ASSEMBLER__ | |
| 18 | #define G0 0x00 | |
| 19 | #define G1 0x01 | |
| 20 | #define G3 0x03 | |
| 21 | #define G6 0x06 | |
| 22 | #define O0 0x08 | |
| 23 | #define O1 0x09 | |
| 24 | #define O2 0x0a | |
| 25 | #define O3 0x0b | |
| 26 | #define O4 0x0c | |
| 27 | #define O5 0x0d | |
| 28 | #define SP 0x0e | |
| 29 | #define O7 0x0f | |
| 30 | #define FP 0x1e | |
| 31 | ||
| 32 | #define r_SKB O0 | |
| 33 | #define r_A O1 | |
| 34 | #define r_X O2 | |
| 35 | #define r_saved_O7 O3 | |
| 36 | #define r_HEADLEN O4 | |
| 37 | #define r_SKB_DATA O5 | |
| 38 | #define r_TMP G1 | |
| 39 | #define r_TMP2 G2 | |
| 40 | #define r_OFF G3 | |
| 584c5e2a DM |
41 | |
| 42 | /* assembly code in arch/sparc/net/bpf_jit_asm.S */ | |
| 43 | extern u32 bpf_jit_load_word[]; | |
| 44 | extern u32 bpf_jit_load_half[]; | |
| 45 | extern u32 bpf_jit_load_byte[]; | |
| 46 | extern u32 bpf_jit_load_byte_msh[]; | |
| 47 | extern u32 bpf_jit_load_word_positive_offset[]; | |
| 48 | extern u32 bpf_jit_load_half_positive_offset[]; | |
| 49 | extern u32 bpf_jit_load_byte_positive_offset[]; | |
| 50 | extern u32 bpf_jit_load_byte_msh_positive_offset[]; | |
| 51 | extern u32 bpf_jit_load_word_negative_offset[]; | |
| 52 | extern u32 bpf_jit_load_half_negative_offset[]; | |
| 53 | extern u32 bpf_jit_load_byte_negative_offset[]; | |
| 54 | extern u32 bpf_jit_load_byte_msh_negative_offset[]; | |
| 55 | ||
| 2809a208 DM |
56 | #else |
| 57 | #define r_SKB %o0 | |
| 58 | #define r_A %o1 | |
| 59 | #define r_X %o2 | |
| 60 | #define r_saved_O7 %o3 | |
| 61 | #define r_HEADLEN %o4 | |
| 62 | #define r_SKB_DATA %o5 | |
| 63 | #define r_TMP %g1 | |
| 64 | #define r_TMP2 %g2 | |
| 65 | #define r_OFF %g3 | |
| 66 | #endif | |
| 67 | ||
| 68 | #endif /* _BPF_JIT_H */ |