1 /* Base/prototype target for default child (native) targets.
3 Copyright (C) 2004-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "process-stratum-target.h"
26 /* A prototype child target. The client can override it with local
29 class inf_child_target
30 : public memory_breakpoint_target<process_stratum_target>
33 inf_child_target () = default;
34 ~inf_child_target () override = 0;
36 const target_info &info () const override;
38 void close () override;
40 void disconnect (const char *, int) override;
42 void fetch_registers (struct regcache *, int) override = 0;
43 void store_registers (struct regcache *, int) override = 0;
45 void prepare_to_store (struct regcache *) override;
47 bool supports_terminal_ours () override;
48 void terminal_init () override;
49 void terminal_inferior () override;
50 void terminal_save_inferior () override;
51 void terminal_ours_for_output () override;
52 void terminal_ours () override;
53 void terminal_info (const char *, int) override;
55 void interrupt () override;
56 void pass_ctrlc () override;
58 void post_startup_inferior (ptid_t) override;
60 void mourn_inferior () override;
62 bool can_run () override;
64 bool can_create_inferior () override;
65 void create_inferior (const char *, const std::string &,
66 char **, int) override = 0;
68 bool can_attach () override;
69 void attach (const char *, int) override = 0;
71 void post_attach (int) override;
73 char *pid_to_exec_file (int pid) override;
75 int fileio_open (struct inferior *inf, const char *filename,
76 int flags, int mode, int warn_if_slow,
77 int *target_errno) override;
78 int fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
79 ULONGEST offset, int *target_errno) override;
80 int fileio_pread (int fd, gdb_byte *read_buf, int len,
81 ULONGEST offset, int *target_errno) override;
82 int fileio_fstat (int fd, struct stat *sb, int *target_errno) override;
83 int fileio_close (int fd, int *target_errno) override;
84 int fileio_unlink (struct inferior *inf,
86 int *target_errno) override;
87 gdb::optional<std::string> fileio_readlink (struct inferior *inf,
89 int *target_errno) override;
90 bool use_agent (bool use) override;
92 bool can_use_agent () override;
95 /* Unpush the target if it wasn't explicitly open with "target native"
96 and there are no live inferiors left. Note: if calling this as a
97 result of a mourn or detach, the current inferior shall already
98 have its PID cleared, so it isn't counted as live. That's usually
99 done by calling either generic_mourn_inferior or
101 void maybe_unpush_target ();
104 /* Functions for helping to write a native target. */
106 /* This is for native targets which use a unix/POSIX-style waitstatus. */
107 extern void store_waitstatus (struct target_waitstatus *, int);
109 /* Register TARGET as native target and set it up to respond to the
110 "target native" command. */
111 extern void add_inf_child_target (inf_child_target *target);
113 /* target_open_ftype callback for inf-child targets. Used by targets
114 that want to register an alternative target_info object. Most
115 targets use add_inf_child_target instead. */
116 extern void inf_child_open_target (const char *arg, int from_tty);