18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _BPF_JIT_H 38c2ecf20Sopenharmony_ci#define _BPF_JIT_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci/* Conventions: 68c2ecf20Sopenharmony_ci * %g1 : temporary 78c2ecf20Sopenharmony_ci * %g2 : Secondary temporary used by SKB data helper stubs. 88c2ecf20Sopenharmony_ci * %g3 : packet offset passed into SKB data helper stubs. 98c2ecf20Sopenharmony_ci * %o0 : pointer to skb (first argument given to JIT function) 108c2ecf20Sopenharmony_ci * %o1 : BPF A accumulator 118c2ecf20Sopenharmony_ci * %o2 : BPF X accumulator 128c2ecf20Sopenharmony_ci * %o3 : Holds saved %o7 so we can call helper functions without needing 138c2ecf20Sopenharmony_ci * to allocate a register window. 148c2ecf20Sopenharmony_ci * %o4 : skb->len - skb->data_len 158c2ecf20Sopenharmony_ci * %o5 : skb->data 168c2ecf20Sopenharmony_ci */ 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci#ifndef __ASSEMBLER__ 198c2ecf20Sopenharmony_ci#define G0 0x00 208c2ecf20Sopenharmony_ci#define G1 0x01 218c2ecf20Sopenharmony_ci#define G3 0x03 228c2ecf20Sopenharmony_ci#define G6 0x06 238c2ecf20Sopenharmony_ci#define O0 0x08 248c2ecf20Sopenharmony_ci#define O1 0x09 258c2ecf20Sopenharmony_ci#define O2 0x0a 268c2ecf20Sopenharmony_ci#define O3 0x0b 278c2ecf20Sopenharmony_ci#define O4 0x0c 288c2ecf20Sopenharmony_ci#define O5 0x0d 298c2ecf20Sopenharmony_ci#define SP 0x0e 308c2ecf20Sopenharmony_ci#define O7 0x0f 318c2ecf20Sopenharmony_ci#define FP 0x1e 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci#define r_SKB O0 348c2ecf20Sopenharmony_ci#define r_A O1 358c2ecf20Sopenharmony_ci#define r_X O2 368c2ecf20Sopenharmony_ci#define r_saved_O7 O3 378c2ecf20Sopenharmony_ci#define r_HEADLEN O4 388c2ecf20Sopenharmony_ci#define r_SKB_DATA O5 398c2ecf20Sopenharmony_ci#define r_TMP G1 408c2ecf20Sopenharmony_ci#define r_TMP2 G2 418c2ecf20Sopenharmony_ci#define r_OFF G3 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ci/* assembly code in arch/sparc/net/bpf_jit_asm_32.S */ 448c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_word[]; 458c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_half[]; 468c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_byte[]; 478c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_byte_msh[]; 488c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_word_positive_offset[]; 498c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_half_positive_offset[]; 508c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_byte_positive_offset[]; 518c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_byte_msh_positive_offset[]; 528c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_word_negative_offset[]; 538c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_half_negative_offset[]; 548c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_byte_negative_offset[]; 558c2ecf20Sopenharmony_ciextern u32 bpf_jit_load_byte_msh_negative_offset[]; 568c2ecf20Sopenharmony_ci 578c2ecf20Sopenharmony_ci#else 588c2ecf20Sopenharmony_ci#define r_SKB %o0 598c2ecf20Sopenharmony_ci#define r_A %o1 608c2ecf20Sopenharmony_ci#define r_X %o2 618c2ecf20Sopenharmony_ci#define r_saved_O7 %o3 628c2ecf20Sopenharmony_ci#define r_HEADLEN %o4 638c2ecf20Sopenharmony_ci#define r_SKB_DATA %o5 648c2ecf20Sopenharmony_ci#define r_TMP %g1 658c2ecf20Sopenharmony_ci#define r_TMP2 %g2 668c2ecf20Sopenharmony_ci#define r_OFF %g3 678c2ecf20Sopenharmony_ci#endif 688c2ecf20Sopenharmony_ci 698c2ecf20Sopenharmony_ci#endif /* _BPF_JIT_H */ 70