/* SPDX-License-Identifier: GPL-2.0 */ #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_32.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 */