/* Base/prototype target for default child (native) targets.
- Copyright (C) 1988-2017 Free Software Foundation, Inc.
+ Copyright (C) 1988-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "inferior.h"
#include <sys/stat.h>
#include "inf-child.h"
-#include "fileio.h"
-#include "agent.h"
-#include "gdb_wait.h"
-#include "filestuff.h"
+#include "gdbsupport/fileio.h"
+#include "gdbsupport/agent.h"
+#include "gdbsupport/gdb_wait.h"
+#include "gdbsupport/filestuff.h"
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
-/* A pointer to what is returned by inf_child_target. Used by
- inf_child_open to push the most-derived target in reaction to
- "target native". */
-static struct target_ops *inf_child_ops = NULL;
+static const target_info inf_child_target_info = {
+ "native",
+ N_("Native process"),
+ N_("Native process (started by the \"run\" command).")
+};
+
+const target_info &
+inf_child_target::info () const
+{
+ return inf_child_target_info;
+}
/* Helper function for child_wait and the derivatives of child_wait.
HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
}
}
-/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
- for all registers. */
-
-static void
-inf_child_fetch_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
-{
- if (regnum == -1)
- {
- for (regnum = 0;
- regnum < gdbarch_num_regs (get_regcache_arch (regcache));
- regnum++)
- regcache_raw_supply (regcache, regnum, NULL);
- }
- else
- regcache_raw_supply (regcache, regnum, NULL);
-}
+inf_child_target::~inf_child_target ()
+{}
-/* Store register REGNUM back into the inferior. If REGNUM is -1, do
- this for all registers (including the floating point registers). */
-
-static void
-inf_child_store_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
-{
-}
-
-static void
-inf_child_post_attach (struct target_ops *self, int pid)
+void
+inf_child_target::post_attach (int pid)
{
/* This target doesn't require a meaningful "post attach" operation
by a debugger. */
makes sure that registers contains all the registers from the
program being debugged. */
-static void
-inf_child_prepare_to_store (struct target_ops *self,
- struct regcache *regcache)
+void
+inf_child_target::prepare_to_store (struct regcache *regcache)
+{
+}
+
+bool
+inf_child_target::supports_terminal_ours ()
+{
+ return true;
+}
+
+void
+inf_child_target::terminal_init ()
+{
+ child_terminal_init (this);
+}
+
+void
+inf_child_target::terminal_inferior ()
+{
+ child_terminal_inferior (this);
+}
+
+void
+inf_child_target::terminal_save_inferior ()
+{
+ child_terminal_save_inferior (this);
+}
+
+void
+inf_child_target::terminal_ours_for_output ()
{
+ child_terminal_ours_for_output (this);
+}
+
+void
+inf_child_target::terminal_ours ()
+{
+ child_terminal_ours (this);
+}
+
+void
+inf_child_target::interrupt ()
+{
+ child_interrupt (this);
+}
+
+void
+inf_child_target::pass_ctrlc ()
+{
+ child_pass_ctrlc (this);
+}
+
+void
+inf_child_target::terminal_info (const char *args, int from_tty)
+{
+ child_terminal_info (this, args, from_tty);
}
/* True if the user did "target native". In that case, we won't
/* See inf-child.h. */
void
-inf_child_open_target (struct target_ops *target, const char *arg,
- int from_tty)
+inf_child_open_target (const char *arg, int from_tty)
{
+ target_ops *target = get_native_target ();
+
+ /* There's always only ever one native target, and if we get here,
+ it better be an inf-child target. */
+ gdb_assert (dynamic_cast<inf_child_target *> (target) != NULL);
+
target_preopen (from_tty);
push_target (target);
inf_child_explicitly_opened = 1;
printf_filtered ("Done. Use the \"run\" command to start a process.\n");
}
-static void
-inf_child_open (const char *arg, int from_tty)
-{
- inf_child_open_target (inf_child_ops, arg, from_tty);
-}
-
/* Implement the to_disconnect target_ops method. */
-static void
-inf_child_disconnect (struct target_ops *target, const char *args, int from_tty)
+void
+inf_child_target::disconnect (const char *args, int from_tty)
{
if (args != NULL)
error (_("Argument given to \"disconnect\"."));
/* Implement the to_close target_ops method. */
-static void
-inf_child_close (struct target_ops *target)
+void
+inf_child_target::close ()
{
/* In case we were forcibly closed. */
inf_child_explicitly_opened = 0;
}
void
-inf_child_mourn_inferior (struct target_ops *ops)
+inf_child_target::mourn_inferior ()
{
generic_mourn_inferior ();
- inf_child_maybe_unpush_target (ops);
+ maybe_unpush_target ();
}
/* See inf-child.h. */
void
-inf_child_maybe_unpush_target (struct target_ops *ops)
+inf_child_target::maybe_unpush_target ()
{
- if (!inf_child_explicitly_opened && !have_inferiors ())
- unpush_target (ops);
+ if (!inf_child_explicitly_opened)
+ unpush_target (this);
}
-static void
-inf_child_post_startup_inferior (struct target_ops *self, ptid_t ptid)
+void
+inf_child_target::post_startup_inferior (ptid_t ptid)
{
/* This target doesn't require a meaningful "post startup inferior"
operation by a debugger. */
}
-static int
-inf_child_follow_fork (struct target_ops *ops, int follow_child,
- int detach_fork)
+bool
+inf_child_target::can_run ()
+{
+ return true;
+}
+
+bool
+inf_child_target::can_create_inferior ()
{
- /* This target doesn't support following fork or vfork events. */
- return 0;
+ return true;
}
-static int
-inf_child_can_run (struct target_ops *self)
+bool
+inf_child_target::can_attach ()
{
- return 1;
+ return true;
}
-static char *
-inf_child_pid_to_exec_file (struct target_ops *self, int pid)
+char *
+inf_child_target::pid_to_exec_file (int pid)
{
/* This target doesn't support translation of a process ID to the
filename of the executable file. */
/* Implementation of to_fileio_open. */
-static int
-inf_child_fileio_open (struct target_ops *self,
- struct inferior *inf, const char *filename,
- int flags, int mode, int warn_if_slow,
- int *target_errno)
+int
+inf_child_target::fileio_open (struct inferior *inf, const char *filename,
+ int flags, int mode, int warn_if_slow,
+ int *target_errno)
{
int nat_flags;
mode_t nat_mode;
/* Implementation of to_fileio_pwrite. */
-static int
-inf_child_fileio_pwrite (struct target_ops *self,
- int fd, const gdb_byte *write_buf, int len,
- ULONGEST offset, int *target_errno)
+int
+inf_child_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len,
+ ULONGEST offset, int *target_errno)
{
int ret;
/* Implementation of to_fileio_pread. */
-static int
-inf_child_fileio_pread (struct target_ops *self,
- int fd, gdb_byte *read_buf, int len,
- ULONGEST offset, int *target_errno)
+int
+inf_child_target::fileio_pread (int fd, gdb_byte *read_buf, int len,
+ ULONGEST offset, int *target_errno)
{
int ret;
/* Implementation of to_fileio_fstat. */
-static int
-inf_child_fileio_fstat (struct target_ops *self, int fd,
- struct stat *sb, int *target_errno)
+int
+inf_child_target::fileio_fstat (int fd, struct stat *sb, int *target_errno)
{
int ret;
/* Implementation of to_fileio_close. */
-static int
-inf_child_fileio_close (struct target_ops *self, int fd, int *target_errno)
+int
+inf_child_target::fileio_close (int fd, int *target_errno)
{
int ret;
- ret = close (fd);
+ ret = ::close (fd);
if (ret == -1)
*target_errno = host_to_fileio_error (errno);
/* Implementation of to_fileio_unlink. */
-static int
-inf_child_fileio_unlink (struct target_ops *self,
- struct inferior *inf, const char *filename,
- int *target_errno)
+int
+inf_child_target::fileio_unlink (struct inferior *inf, const char *filename,
+ int *target_errno)
{
int ret;
/* Implementation of to_fileio_readlink. */
-static char *
-inf_child_fileio_readlink (struct target_ops *self,
- struct inferior *inf, const char *filename,
- int *target_errno)
+gdb::optional<std::string>
+inf_child_target::fileio_readlink (struct inferior *inf, const char *filename,
+ int *target_errno)
{
/* We support readlink only on systems that also provide a compile-time
maximum path length (PATH_MAX), at least for now. */
#if defined (PATH_MAX)
char buf[PATH_MAX];
int len;
- char *ret;
len = readlink (filename, buf, sizeof buf);
if (len < 0)
{
*target_errno = host_to_fileio_error (errno);
- return NULL;
+ return {};
}
- ret = (char *) xmalloc (len + 1);
- memcpy (ret, buf, len);
- ret[len] = '\0';
- return ret;
+ return std::string (buf, len);
#else
*target_errno = FILEIO_ENOSYS;
- return NULL;
+ return {};
#endif
}
-static int
-inf_child_use_agent (struct target_ops *self, int use)
+bool
+inf_child_target::use_agent (bool use)
{
if (agent_loaded_p ())
{
- use_agent = use;
- return 1;
+ ::use_agent = use;
+ return true;
}
else
- return 0;
+ return false;
}
-static int
-inf_child_can_use_agent (struct target_ops *self)
+bool
+inf_child_target::can_use_agent ()
{
return agent_loaded_p ();
}
-/* Default implementation of the to_can_async_p and
- to_supports_non_stop methods. */
-
-static int
-return_zero (struct target_ops *ignore)
-{
- return 0;
-}
-
-struct target_ops *
-inf_child_target (void)
-{
- struct target_ops *t = XCNEW (struct target_ops);
-
- t->to_shortname = "native";
- t->to_longname = "Native process";
- t->to_doc = "Native process (started by the \"run\" command).";
- t->to_open = inf_child_open;
- t->to_close = inf_child_close;
- t->to_disconnect = inf_child_disconnect;
- t->to_post_attach = inf_child_post_attach;
- t->to_fetch_registers = inf_child_fetch_inferior_registers;
- t->to_store_registers = inf_child_store_inferior_registers;
- t->to_prepare_to_store = inf_child_prepare_to_store;
- t->to_insert_breakpoint = memory_insert_breakpoint;
- t->to_remove_breakpoint = memory_remove_breakpoint;
- t->to_terminal_init = child_terminal_init;
- t->to_terminal_inferior = child_terminal_inferior;
- t->to_terminal_ours_for_output = child_terminal_ours_for_output;
- t->to_terminal_ours = child_terminal_ours;
- t->to_terminal_info = child_terminal_info;
- t->to_post_startup_inferior = inf_child_post_startup_inferior;
- t->to_follow_fork = inf_child_follow_fork;
- t->to_can_run = inf_child_can_run;
- /* We must default these because they must be implemented by any
- target that can run. */
- t->to_can_async_p = return_zero;
- t->to_supports_non_stop = return_zero;
- t->to_pid_to_exec_file = inf_child_pid_to_exec_file;
- t->to_stratum = process_stratum;
- t->to_has_all_memory = default_child_has_all_memory;
- t->to_has_memory = default_child_has_memory;
- t->to_has_stack = default_child_has_stack;
- t->to_has_registers = default_child_has_registers;
- t->to_has_execution = default_child_has_execution;
- t->to_fileio_open = inf_child_fileio_open;
- t->to_fileio_pwrite = inf_child_fileio_pwrite;
- t->to_fileio_pread = inf_child_fileio_pread;
- t->to_fileio_fstat = inf_child_fileio_fstat;
- t->to_fileio_close = inf_child_fileio_close;
- t->to_fileio_unlink = inf_child_fileio_unlink;
- t->to_fileio_readlink = inf_child_fileio_readlink;
- t->to_magic = OPS_MAGIC;
- t->to_use_agent = inf_child_use_agent;
- t->to_can_use_agent = inf_child_can_use_agent;
-
- /* Store a pointer so we can push the most-derived target from
- inf_child_open. */
- inf_child_ops = t;
-
- return t;
+/* See inf-child.h. */
+
+void
+add_inf_child_target (inf_child_target *target)
+{
+ set_native_target (target);
+ add_target (inf_child_target_info, inf_child_open_target);
}
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