/* Native debugging support for GNU/Linux (LWP layer).
- Copyright (C) 2000-2018 Free Software Foundation, Inc.
+ Copyright (C) 2000-2020 Free Software Foundation, Inc.
This file is part of GDB.
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 LINUX_NAT_H
+#define LINUX_NAT_H
+
#include "nat/linux-nat.h"
#include "inf-ptrace.h"
#include "target.h"
ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
- void pass_signals (int, unsigned char *) override;
+ void pass_signals (gdb::array_view<const unsigned char>) override;
enum target_xfer_status xfer_partial (enum target_object object,
const char *annex,
void kill () override;
void mourn_inferior () override;
- int thread_alive (ptid_t ptid) override;
+ bool thread_alive (ptid_t ptid) override;
void update_thread_list () override;
- const char *pid_to_str (ptid_t) override;
+ std::string pid_to_str (ptid_t) override;
const char *thread_name (struct thread_info *) override;
struct address_space *thread_address_space (ptid_t) override;
- int stopped_by_watchpoint () override;
+ bool stopped_by_watchpoint () override;
- int stopped_data_address (CORE_ADDR *) override;
+ bool stopped_data_address (CORE_ADDR *) override;
- int stopped_by_sw_breakpoint () override;
- int supports_stopped_by_sw_breakpoint () override;
+ bool stopped_by_sw_breakpoint () override;
+ bool supports_stopped_by_sw_breakpoint () override;
- int stopped_by_hw_breakpoint () override;
- int supports_stopped_by_hw_breakpoint () override;
+ bool stopped_by_hw_breakpoint () override;
+ bool supports_stopped_by_hw_breakpoint () override;
void thread_events (int) override;
- int can_async_p () override;
- int is_async_p () override;
+ bool can_async_p () override;
+ bool is_async_p () override;
- int supports_non_stop () override;
- int always_non_stop_p () override;
+ bool supports_non_stop () override;
+ bool always_non_stop_p () override;
+ int async_wait_fd () override;
void async (int) override;
void close () override;
void stop (ptid_t) override;
- int supports_multi_process () override;
+ bool supports_multi_process () override;
- int supports_disable_randomization () override;
+ bool supports_disable_randomization () override;
int core_of_thread (ptid_t ptid) override;
- int filesystem_is_local () override;
+ bool filesystem_is_local () override;
int fileio_open (struct inferior *inf, const char *filename,
int flags, int mode, int warn_if_slow,
void post_attach (int) override;
- int follow_fork (int, int) override;
+ bool follow_fork (bool, bool) override;
std::vector<static_tracepoint_marker>
static_tracepoint_markers_by_strid (const char *id) override;
virtual void low_resume (ptid_t ptid, int step, enum gdb_signal sig)
{ inf_ptrace_target::resume (ptid, step, sig); }
- virtual int low_stopped_by_watchpoint ()
- { return 0; }
-
- virtual int low_stopped_data_address (CORE_ADDR *addr_p)
- { return 0; }
+ virtual bool low_stopped_by_watchpoint ()
+ { return false; }
+
+ virtual bool low_stopped_data_address (CORE_ADDR *addr_p)
+ { return false; }
+
+ /* The method to call, if any, when a new thread is attached. */
+ virtual void low_new_thread (struct lwp_info *)
+ {}
+
+ /* The method to call, if any, when a thread is destroyed. */
+ virtual void low_delete_thread (struct arch_lwp_info *lp)
+ {
+ gdb_assert (lp == NULL);
+ }
+
+ /* The method to call, if any, when a new fork is attached. */
+ virtual void low_new_fork (struct lwp_info *parent, pid_t child_pid)
+ {}
+
+ /* The method to call, if any, when a new clone event is detected. */
+ virtual void low_new_clone (struct lwp_info *parent, pid_t child_lwp)
+ {}
+
+ /* The method to call, if any, when a process is no longer
+ attached. */
+ virtual void low_forget_process (pid_t pid)
+ {}
+
+ /* Hook to call prior to resuming a thread. */
+ virtual void low_prepare_to_resume (struct lwp_info *)
+ {}
+
+ /* Convert a ptrace/host siginfo object, into/from the siginfo in
+ the layout of the inferiors' architecture. Returns true if any
+ conversion was done; false otherwise, in which case the caller
+ does a straight memcpy. If DIRECTION is 1, then copy from INF to
+ PTRACE. If DIRECTION is 0, copy from PTRACE to INF. */
+ virtual bool low_siginfo_fixup (siginfo_t *ptrace, gdb_byte *inf,
+ int direction)
+ { return false; }
+
+ /* SIGTRAP-like breakpoint status events recognizer. The default
+ recognizes SIGTRAP only. */
+ virtual bool low_status_is_event (int status);
};
/* The final/concrete instance. */
/* When 'stopped' is set, this is where the lwp last stopped, with
decr_pc_after_break already accounted for. If the LWP is
- running, and stepping, this is the address at which the lwp was
+ running and stepping, this is the address at which the lwp was
resumed (that is, it's the previous stop PC). If the LWP is
running and not stepping, this is 0. */
CORE_ADDR stop_pc;
int step;
/* The reason the LWP last stopped, if we need to track it
- (breakpoint, watchpoint, etc.) */
+ (breakpoint, watchpoint, etc.). */
enum target_stop_reason stop_reason;
/* On architectures where it is possible to know the data address of
left stopped.) */
extern void linux_unstop_all_lwps (void);
-/* Register a method to call whenever a new thread is attached. */
-void linux_nat_set_new_thread (struct target_ops *, void (*) (struct lwp_info *));
-
-/* Register a method to call whenever a new thread is deleted. */
-void linux_nat_set_delete_thread (struct target_ops *,
- void (*) (struct arch_lwp_info *));
-
-/* Register a method to call whenever a new fork is attached. */
-typedef void (linux_nat_new_fork_ftype) (struct lwp_info *parent,
- pid_t child_pid);
-void linux_nat_set_new_fork (struct target_ops *ops,
- linux_nat_new_fork_ftype *fn);
-
-/* Register a method to call whenever a process is killed or
- detached. */
-typedef void (linux_nat_forget_process_ftype) (pid_t pid);
-void linux_nat_set_forget_process (struct target_ops *ops,
- linux_nat_forget_process_ftype *fn);
-
-/* Call the method registered with the function above. PID is the
- process to forget about. */
-void linux_nat_forget_process (pid_t pid);
-
-/* Register a method that converts a siginfo object between the layout
- that ptrace returns, and the layout in the architecture of the
- inferior. */
-void linux_nat_set_siginfo_fixup (struct target_ops *,
- int (*) (siginfo_t *,
- gdb_byte *,
- int));
-
-/* Register a method to call prior to resuming a thread. */
-
-void linux_nat_set_prepare_to_resume (struct target_ops *,
- void (*) (struct lwp_info *));
-
/* Update linux-nat internal state when changing from one fork
to another. */
void linux_nat_switch_fork (ptid_t new_ptid);
uninitialized in such case). */
int linux_nat_get_siginfo (ptid_t ptid, siginfo_t *siginfo);
-/* Set alternative SIGTRAP-like events recognizer. */
-void linux_nat_set_status_is_event (struct target_ops *t,
- int (*status_is_event) (int status));
+#endif /* LINUX_NAT_H */
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