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/*
* ptrace(2)-based backend interface.
*
* Copyright (c) 2017-2019 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifndef STRACE_PTRACE_BACKEND_H
#define STRACE_PTRACE_BACKEND_H
#include "defs.h"
#include "trace_event.h"
extern bool ptrace_init(int argc, char *argv[]);
extern void ptrace_startup_child(char **argv, char **env);
extern void ptrace_attach_tcb(struct tcb *const tcp);
extern void ptrace_detach(struct tcb *tcp);
extern struct tcb_wait_data *ptrace_init_trace_wait_data(void *p);
extern struct tcb_wait_data *ptrace_copy_trace_wait_data(struct
tcb_wait_data *wd);
extern void ptrace_free_trace_wait_data(struct tcb_wait_data *wd);
extern struct tcb_wait_data *ptrace_next_event(void);
extern void ptrace_handle_exec(struct tcb **current_tcp,
struct tcb_wait_data *wd);
extern bool ptrace_restart_process(struct tcb *current_tcp,
struct tcb_wait_data *wd);
extern void ptrace_clear_regs(struct tcb *tcp);
extern long ptrace_get_regs(struct tcb * const tcp);
extern int ptrace_get_scno(struct tcb *tcp);
extern int ptrace_set_scno(struct tcb *tcp, kernel_ulong_t scno);
extern void ptrace_set_error(struct tcb *tcp, unsigned long new_error);
extern void ptrace_set_success(struct tcb *tcp, kernel_long_t new_rval);
extern bool ptrace_get_instruction_pointer(struct tcb *tcp, kernel_ulong_t *ip);
extern bool ptrace_get_stack_pointer(struct tcb *tcp, kernel_ulong_t *sp);
extern int ptrace_get_syscall_args(struct tcb *tcp);
extern int ptrace_get_syscall_result(struct tcb *tcp);
extern int ptrace_umoven(struct tcb *const tcp, kernel_ulong_t addr,
unsigned int len, void *const our_addr);
extern int ptrace_umovestr(struct tcb *const tcp, kernel_ulong_t addr,
unsigned int len, char *laddr);
extern int ptrace_upeek(struct tcb *tcp, unsigned long off,
kernel_ulong_t *res);
extern int ptrace_upoke(struct tcb *tcp, unsigned long off, kernel_ulong_t val);
extern const struct tracing_backend ptrace_backend;
#endif /* !STRACE_PTRACE_BACKEND_H */
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