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69 lines
1.7 KiB
69 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _BPF_JIT_H |
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#define _BPF_JIT_H |
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/* Conventions: |
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* %g1 : temporary |
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* %g2 : Secondary temporary used by SKB data helper stubs. |
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* %g3 : packet offset passed into SKB data helper stubs. |
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* %o0 : pointer to skb (first argument given to JIT function) |
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* %o1 : BPF A accumulator |
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* %o2 : BPF X accumulator |
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* %o3 : Holds saved %o7 so we can call helper functions without needing |
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* to allocate a register window. |
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* %o4 : skb->len - skb->data_len |
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* %o5 : skb->data |
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*/ |
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#ifndef __ASSEMBLER__ |
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#define G0 0x00 |
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#define G1 0x01 |
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#define G3 0x03 |
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#define G6 0x06 |
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#define O0 0x08 |
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#define O1 0x09 |
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#define O2 0x0a |
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#define O3 0x0b |
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#define O4 0x0c |
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#define O5 0x0d |
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#define SP 0x0e |
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#define O7 0x0f |
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#define FP 0x1e |
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#define r_SKB O0 |
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#define r_A O1 |
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#define r_X O2 |
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#define r_saved_O7 O3 |
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#define r_HEADLEN O4 |
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#define r_SKB_DATA O5 |
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#define r_TMP G1 |
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#define r_TMP2 G2 |
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#define r_OFF G3 |
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/* assembly code in arch/sparc/net/bpf_jit_asm_32.S */ |
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extern u32 bpf_jit_load_word[]; |
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extern u32 bpf_jit_load_half[]; |
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extern u32 bpf_jit_load_byte[]; |
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extern u32 bpf_jit_load_byte_msh[]; |
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extern u32 bpf_jit_load_word_positive_offset[]; |
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extern u32 bpf_jit_load_half_positive_offset[]; |
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extern u32 bpf_jit_load_byte_positive_offset[]; |
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extern u32 bpf_jit_load_byte_msh_positive_offset[]; |
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extern u32 bpf_jit_load_word_negative_offset[]; |
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extern u32 bpf_jit_load_half_negative_offset[]; |
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extern u32 bpf_jit_load_byte_negative_offset[]; |
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extern u32 bpf_jit_load_byte_msh_negative_offset[]; |
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#else |
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#define r_SKB %o0 |
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#define r_A %o1 |
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#define r_X %o2 |
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#define r_saved_O7 %o3 |
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#define r_HEADLEN %o4 |
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#define r_SKB_DATA %o5 |
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#define r_TMP %g1 |
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#define r_TMP2 %g2 |
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#define r_OFF %g3 |
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#endif |
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#endif /* _BPF_JIT_H */
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