* inferior.h (enum stop_kind): Improve comment.

[deliverable/binutils-gdb.git] / gdb / inferior.h

diff --git a/gdb/inferior.h b/gdb/inferior.h
index f7236e7b55b95217e130ba948556b516b9d787ae..f8d358d4af336db83e1be0557d4eb8c50b296b43 100644 (file)
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -1,8 +1,7 @@
 /* Variables that describe the inferior process running under GDB:
    Where it is, why it stopped, and how to step it.
 
 /* Variables that describe the inferior process running under GDB:
    Where it is, why it stopped, and how to step it.
 

-   Copyright (C) 1986, 1988-1996, 1998-2001, 2003-2012 Free Software
-   Foundation, Inc.
+   Copyright (C) 1986-2014 Free Software Foundation, Inc.

 
    This file is part of GDB.
 
 
    This file is part of GDB.
 


@@ -66,16 +65,6 @@ extern void discard_infcall_control_state (struct infcall_control_state *);
 extern struct regcache *
   get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
 
 extern struct regcache *
   get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
 

-/* Returns true if PTID matches filter FILTER.  FILTER can be the wild
-   card MINUS_ONE_PTID (all ptid match it); can be a ptid representing
-   a process (ptid_is_pid returns true), in which case, all lwps and
-   threads of that given process match, lwps and threads of other
-   processes do not; or, it can represent a specific thread, in which
-   case, only that thread will match true.  PTID must represent a
-   specific LWP or THREAD, it can never be a wild card.  */
-
-extern int ptid_match (ptid_t ptid, ptid_t filter);
-

 /* Save value of inferior_ptid so that it may be restored by
    a later call to do_cleanups().  Returns the struct cleanup
    pointer needed for later doing the cleanup.  */
 /* Save value of inferior_ptid so that it may be restored by
    a later call to do_cleanups().  Returns the struct cleanup
    pointer needed for later doing the cleanup.  */


@@ -91,7 +80,7 @@ extern void set_inferior_io_terminal (const char *terminal_name);
 extern const char *get_inferior_io_terminal (void);
 
 /* Collected pid, tid, etc. of the debugged inferior.  When there's
 extern const char *get_inferior_io_terminal (void);
 
 /* Collected pid, tid, etc. of the debugged inferior.  When there's

-   no inferior, PIDGET (inferior_ptid) will be 0.  */
+   no inferior, ptid_get_pid (inferior_ptid) will be 0.  */

 
 extern ptid_t inferior_ptid;
 
 
 extern ptid_t inferior_ptid;
 


@@ -120,21 +109,12 @@ extern int step_stop_if_no_debug;
    are kept running freely.  */
 extern int non_stop;
 
    are kept running freely.  */
 extern int non_stop;
 

-/* If set (default), when following a fork, GDB will detach from one
-   the fork branches, child or parent.  Exactly which branch is
-   detached depends on 'set follow-fork-mode' setting.  */
-extern int detach_fork;
-

 /* When set (default), the target should attempt to disable the operating
    system's address space randomization feature when starting an inferior.  */
 extern int disable_randomization;
 
 extern void generic_mourn_inferior (void);
 
 /* When set (default), the target should attempt to disable the operating
    system's address space randomization feature when starting an inferior.  */
 extern int disable_randomization;
 
 extern void generic_mourn_inferior (void);
 

-extern void terminal_save_ours (void);
-
-extern void terminal_ours (void);
-

 extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch,
                                              struct type *type,
                                              const gdb_byte *buf);
 extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch,
                                              struct type *type,
                                              const gdb_byte *buf);


@@ -176,17 +156,21 @@ extern void default_print_registers_info (struct gdbarch *gdbarch,
                                          struct frame_info *frame,
                                          int regnum, int all);
 
                                          struct frame_info *frame,
                                          int regnum, int all);
 

-extern void child_terminal_info (char *, int);
+extern void child_terminal_info (struct target_ops *self, const char *, int);

 
 extern void term_info (char *, int);
 
 
 extern void term_info (char *, int);
 

-extern void terminal_ours_for_output (void);
+extern void child_terminal_save_ours (struct target_ops *self);

 
 

-extern void terminal_inferior (void);
+extern void child_terminal_ours (struct target_ops *self);

 
 

-extern void terminal_init_inferior (void);
+extern void child_terminal_ours_for_output (struct target_ops *self);

 
 

-extern void terminal_init_inferior_with_pgrp (int pgrp);
+extern void child_terminal_inferior (struct target_ops *self);
+
+extern void child_terminal_init (struct target_ops *self);
+
+extern void child_terminal_init_with_pgrp (int pgrp);

 
 /* From fork-child.c */
 
 
 /* From fork-child.c */
 


@@ -211,6 +195,8 @@ extern void start_remote (int from_tty);
 
 extern void normal_stop (void);
 
 
 extern void normal_stop (void);
 

+extern void print_stop_event (struct target_waitstatus *ws);
+

 extern int signal_stop_state (int);
 
 extern int signal_print_state (int);
 extern int signal_stop_state (int);
 
 extern int signal_print_state (int);


@@ -230,6 +216,18 @@ extern void follow_inferior_reset_breakpoints (void);
 
 void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
 
 
 void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
 

+/* Clear the convenience variables associated with the exit of the
+   inferior.  Currently, those variables are $_exitcode and
+   $_exitsignal.  */
+
+extern void clear_exit_convenience_vars (void);
+
+/* Returns true if we're trying to step past the instruction at
+   ADDRESS in ASPACE.  */
+
+extern int stepping_past_instruction_at (struct address_space *aspace,
+                                        CORE_ADDR address);
+

 /* From infcmd.c */
 
 extern void post_create_inferior (struct target_ops *, int);
 /* From infcmd.c */
 
 extern void post_create_inferior (struct target_ops *, int);


@@ -242,20 +240,10 @@ extern void set_inferior_args (char *);
 
 extern void set_inferior_args_vector (int, char **);
 
 
 extern void set_inferior_args_vector (int, char **);
 

-extern void all_registers_info (char *, int);
-

 extern void registers_info (char *, int);
 
 extern void registers_info (char *, int);
 

-extern void nexti_command (char *, int);
-
-extern void stepi_command (char *, int);
-

 extern void continue_1 (int all_threads);
 
 extern void continue_1 (int all_threads);
 

-extern void continue_command (char *, int);
-
-extern void interrupt_target_command (char *args, int from_tty);
-

 extern void interrupt_target_1 (int all_threads);
 
 extern void delete_longjmp_breakpoint_cleanup (void *arg);
 extern void interrupt_target_1 (int all_threads);
 
 extern void delete_longjmp_breakpoint_cleanup (void *arg);


@@ -267,6 +255,25 @@ extern void notice_new_inferior (ptid_t, int, int);
 extern struct value *get_return_value (struct value *function,
                                        struct type *value_type);
 
 extern struct value *get_return_value (struct value *function,
                                        struct type *value_type);
 

+/* Whether to start up the debuggee under a shell.
+
+   If startup-with-shell is set, GDB's "run" will attempt to start up
+   the debuggee under a shell.
+
+   This is in order for argument-expansion to occur.  E.g.,
+
+   (gdb) run *
+
+   The "*" gets expanded by the shell into a list of files.
+
+   While this is a nice feature, it may be handy to bypass the shell
+   in some cases.  To disable this feature, do "set startup-with-shell
+   false".
+
+   The catch-exec traps expected during start-up will be one more if
+   the target is started up with a shell.  */
+extern int startup_with_shell;
+

 /* Address at which inferior stopped.  */
 
 extern CORE_ADDR stop_pc;
 /* Address at which inferior stopped.  */
 
 extern CORE_ADDR stop_pc;


@@ -298,20 +305,20 @@ enum step_over_calls_kind
    setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP
    except that there is no need to hide a signal.  */
 
    setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP
    except that there is no need to hide a signal.  */
 

-/* It is also used after attach, due to attaching to a process.  This
-   is a bit trickier.  When doing an attach, the kernel stops the
-   debuggee with a SIGSTOP.  On newer GNU/Linux kernels (>= 2.5.61)
-   the handling of SIGSTOP for a ptraced process has changed.  Earlier
-   versions of the kernel would ignore these SIGSTOPs, while now
-   SIGSTOP is treated like any other signal, i.e. it is not muffled.
-   
+/* STOP_QUIETLY_NO_SIGSTOP is used to handle a tricky situation with attach.
+   When doing an attach, the kernel stops the debuggee with a SIGSTOP.
+   On newer GNU/Linux kernels (>= 2.5.61) the handling of SIGSTOP for
+   a ptraced process has changed.  Earlier versions of the kernel
+   would ignore these SIGSTOPs, while now SIGSTOP is treated like any
+   other signal, i.e. it is not muffled.
+

    If the gdb user does a 'continue' after the 'attach', gdb passes
    the global variable stop_signal (which stores the signal from the
    attach, SIGSTOP) to the ptrace(PTRACE_CONT,...)  call.  This is
    problematic, because the kernel doesn't ignore such SIGSTOP
    now.  I.e. it is reported back to gdb, which in turn presents it
    back to the user.
    If the gdb user does a 'continue' after the 'attach', gdb passes
    the global variable stop_signal (which stores the signal from the
    attach, SIGSTOP) to the ptrace(PTRACE_CONT,...)  call.  This is
    problematic, because the kernel doesn't ignore such SIGSTOP
    now.  I.e. it is reported back to gdb, which in turn presents it
    back to the user.

- 
+

    To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows
    gdb to clear the value of stop_signal after the attach, so that it
    is not passed back down to the kernel.  */
    To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows
    gdb to clear the value of stop_signal after the attach, so that it
    is not passed back down to the kernel.  */


@@ -356,25 +363,12 @@ struct displaced_step_closure *get_displaced_step_closure_by_addr (CORE_ADDR add
 #define ON_STACK 1
 #define AT_ENTRY_POINT 4
 
 #define ON_STACK 1
 #define AT_ENTRY_POINT 4
 

-/* If STARTUP_WITH_SHELL is set, GDB's "run"
-   will attempts to start up the debugee under a shell.
-   This is in order for argument-expansion to occur.  E.g.,
-   (gdb) run *
-   The "*" gets expanded by the shell into a list of files.
-   While this is a nice feature, it turns out to interact badly
-   with some of the catch-fork/catch-exec features we have added.
-   In particular, if the shell does any fork/exec's before
-   the exec of the target program, that can confuse GDB.
-   To disable this feature, set STARTUP_WITH_SHELL to 0.
-   To enable this feature, set STARTUP_WITH_SHELL to 1.
-   The catch-exec traps expected during start-up will
-   be 1 if target is not started up with a shell, 2 if it is.
-   - RT
-   If you disable this, you need to decrement
-   START_INFERIOR_TRAPS_EXPECTED in tm.h.  */
-#define STARTUP_WITH_SHELL 1
+/* Number of traps that happen between exec'ing the shell to run an
+   inferior and when we finally get to the inferior code, not counting
+   the exec for the shell.  This is 1 on most implementations.
+   Overridden in nm.h files.  */

 #if !defined(START_INFERIOR_TRAPS_EXPECTED)
 #if !defined(START_INFERIOR_TRAPS_EXPECTED)

-#define START_INFERIOR_TRAPS_EXPECTED  2
+#define START_INFERIOR_TRAPS_EXPECTED  1

 #endif
 
 struct private_inferior;
 #endif
 
 struct private_inferior;


@@ -643,6 +637,8 @@ extern void update_observer_mode (void);
 
 extern void update_signals_program_target (void);
 
 
 extern void update_signals_program_target (void);
 

+extern void signal_catch_update (const unsigned int *);
+

 /* In some circumstances we allow a command to specify a numeric
    signal.  The idea is to keep these circumstances limited so that
    users (and scripts) develop portable habits.  For comparison,
 /* In some circumstances we allow a command to specify a numeric
    signal.  The idea is to keep these circumstances limited so that
    users (and scripts) develop portable habits.  For comparison,