Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __UNWIND_H
#define __UNWIND_H
 
#include <linux/compiler.h>
#include <linux/types.h>
#include "util/map_symbol.h"
 
struct maps;
struct perf_sample;
struct thread;
 
struct unwind_entry {
<------>struct map_symbol ms;
<------>u64		  ip;
};
 
typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
 
struct unwind_libunwind_ops {
<------>int (*prepare_access)(struct maps *maps);
<------>void (*flush_access)(struct maps *maps);
<------>void (*finish_access)(struct maps *maps);
<------>int (*get_entries)(unwind_entry_cb_t cb, void *arg,
<------><------><------>   struct thread *thread,
<------><------><------>   struct perf_sample *data, int max_stack);
};
 
#ifdef HAVE_DWARF_UNWIND_SUPPORT
int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
<------><------><------>struct thread *thread,
<------><------><------>struct perf_sample *data, int max_stack);
/* libunwind specific */
#ifdef HAVE_LIBUNWIND_SUPPORT
#ifndef LIBUNWIND__ARCH_REG_ID
#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
#endif
 
#ifndef LIBUNWIND__ARCH_REG_SP
#define LIBUNWIND__ARCH_REG_SP PERF_REG_SP
#endif
 
#ifndef LIBUNWIND__ARCH_REG_IP
#define LIBUNWIND__ARCH_REG_IP PERF_REG_IP
#endif
 
int LIBUNWIND__ARCH_REG_ID(int regnum);
int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized);
void unwind__flush_access(struct maps *maps);
void unwind__finish_access(struct maps *maps);
#else
static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
<------><------><------><------><------> struct map *map __maybe_unused,
<------><------><------><------><------> bool *initialized __maybe_unused)
{
<------>return 0;
}
 
static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
#endif
#else
static inline int
unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
<------><------>    void *arg __maybe_unused,
<------><------>    struct thread *thread __maybe_unused,
<------><------>    struct perf_sample *data __maybe_unused,
<------><------>    int max_stack __maybe_unused)
{
<------>return 0;
}
 
static inline int unwind__prepare_access(struct maps *maps __maybe_unused,
<------><------><------><------><------> struct map *map __maybe_unused,
<------><------><------><------><------> bool *initialized __maybe_unused)
{
<------>return 0;
}
 
static inline void unwind__flush_access(struct maps *maps __maybe_unused) {}
static inline void unwind__finish_access(struct maps *maps __maybe_unused) {}
#endif /* HAVE_DWARF_UNWIND_SUPPORT */
#endif /* __UNWIND_H */