162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __TRACE_HELPER_H 362306a36Sopenharmony_ci#define __TRACE_HELPER_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <bpf/libbpf.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) 862306a36Sopenharmony_ci#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1) 962306a36Sopenharmony_ci 1062306a36Sopenharmony_cistruct ksym { 1162306a36Sopenharmony_ci long addr; 1262306a36Sopenharmony_ci char *name; 1362306a36Sopenharmony_ci}; 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ciint load_kallsyms(void); 1662306a36Sopenharmony_ciint load_kallsyms_refresh(void); 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_cistruct ksym *ksym_search(long key); 1962306a36Sopenharmony_cilong ksym_get_addr(const char *name); 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ci/* open kallsyms and find addresses on the fly, faster than load + search. */ 2262306a36Sopenharmony_ciint kallsyms_find(const char *sym, unsigned long long *addr); 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_civoid read_trace_pipe(void); 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_cissize_t get_uprobe_offset(const void *addr); 2762306a36Sopenharmony_cissize_t get_rel_offset(uintptr_t addr); 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ciint read_build_id(const char *path, char *build_id, size_t size); 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci#endif 32