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/* Base/prototype target for default child (native) targets.
Copyright (C) 2004-2021 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef INF_CHILD_H
#define INF_CHILD_H
#include "target.h"
#include "process-stratum-target.h"
/* A prototype child target. The client can override it with local
methods. */
class inf_child_target
: public memory_breakpoint_target<process_stratum_target>
{
public:
inf_child_target () = default;
~inf_child_target () override = 0;
const target_info &info () const override;
void close () override;
void disconnect (const char *, int) override;
void fetch_registers (struct regcache *, int) override = 0;
void store_registers (struct regcache *, int) override = 0;
void prepare_to_store (struct regcache *) override;
bool supports_terminal_ours () override;
void terminal_init () override;
void terminal_inferior () override;
void terminal_save_inferior () override;
void terminal_ours_for_output () override;
void terminal_ours () override;
void terminal_info (const char *, int) override;
void interrupt () override;
void pass_ctrlc () override;
void post_startup_inferior (ptid_t) override;
void mourn_inferior () override;
bool can_run () override;
bool can_create_inferior () override;
void create_inferior (const char *, const std::string &,
char **, int) override = 0;
bool can_attach () override;
void attach (const char *, int) override = 0;
void post_attach (int) override;
char *pid_to_exec_file (int pid) override;
int fileio_open (struct inferior *inf, const char *filename,
int flags, int mode, int warn_if_slow,
int *target_errno) override;
int fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
ULONGEST offset, int *target_errno) override;
int fileio_pread (int fd, gdb_byte *read_buf, int len,
ULONGEST offset, int *target_errno) override;
int fileio_fstat (int fd, struct stat *sb, int *target_errno) override;
int fileio_close (int fd, int *target_errno) override;
int fileio_unlink (struct inferior *inf,
const char *filename,
int *target_errno) override;
gdb::optional<std::string> fileio_readlink (struct inferior *inf,
const char *filename,
int *target_errno) override;
bool use_agent (bool use) override;
bool can_use_agent () override;
protected:
/* Unpush the target if it wasn't explicitly open with "target native"
and there are no live inferiors left. Note: if calling this as a
result of a mourn or detach, the current inferior shall already
have its PID cleared, so it isn't counted as live. That's usually
done by calling either generic_mourn_inferior or
detach_inferior. */
void maybe_unpush_target ();
};
/* Functions for helping to write a native target. */
/* This is for native targets which use a unix/POSIX-style waitstatus. */
extern void store_waitstatus (struct target_waitstatus *, int);
/* Register TARGET as native target and set it up to respond to the
"target native" command. */
extern void add_inf_child_target (inf_child_target *target);
/* target_open_ftype callback for inf-child targets. Used by targets
that want to register an alternative target_info object. Most
targets use add_inf_child_target instead. */
extern void inf_child_open_target (const char *arg, int from_tty);
#endif
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