PR symtab/19914 fix handling of dwp + split debug

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

diff --git a/gdb/inferior.h b/gdb/inferior.h
index 196d03362cded384bb1023ece35b6b7f39dd361d..571d26a1f84b80905f62eaf739847e8b01abc31f 100644 (file)
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -1,7 +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) 1986-2013 Free Software Foundation, Inc.
+   Copyright (C) 1986-2016 Free Software Foundation, Inc.

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


@@ -31,8 +31,6 @@ struct ui_out;
 struct terminal_info;
 struct target_desc_info;
 
 struct terminal_info;
 struct target_desc_info;
 

-#include "ptid.h"
-

 /* For bpstat.  */
 #include "breakpoint.h"
 
 /* For bpstat.  */
 #include "breakpoint.h"
 


@@ -65,16 +63,6 @@ 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.  */


@@ -90,50 +78,12 @@ 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;
 

-/* Are we simulating synchronous execution? This is used in async gdb
-   to implement the 'run', 'continue' etc commands, which will not
-   redisplay the prompt until the execution is actually over.  */
-extern int sync_execution;
-
-/* Inferior environment.  */
-
-extern void clear_proceed_status (void);
-
-extern void proceed (CORE_ADDR, enum gdb_signal, int);
-
-extern int sched_multi;
-
-/* When set, stop the 'step' command if we enter a function which has
-   no line number information.  The normal behavior is that we step
-   over such function.  */
-extern int step_stop_if_no_debug;
-
-/* If set, the inferior should be controlled in non-stop mode.  In
-   this mode, each thread is controlled independently.  Execution
-   commands apply only to the selected thread by default, and stop
-   events stop only the thread that had the event -- the other threads
-   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);
 
 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);


@@ -147,27 +97,8 @@ extern void address_to_signed_pointer (struct gdbarch *gdbarch,
                                       struct type *type, gdb_byte *buf,
                                       CORE_ADDR addr);
 
                                       struct type *type, gdb_byte *buf,
                                       CORE_ADDR addr);
 

-extern void wait_for_inferior (void);
-
-extern void prepare_for_detach (void);
-
-extern void fetch_inferior_event (void *);
-
-extern void init_wait_for_inferior (void);
-

 extern void reopen_exec_file (void);
 
 extern void reopen_exec_file (void);
 

-/* The `resume' routine should only be called in special circumstances.
-   Normally, use `proceed', which handles a lot of bookkeeping.  */
-
-extern void resume (int, enum gdb_signal);
-
-extern ptid_t user_visible_resume_ptid (int step);
-
-extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *,
-                                                 struct symtab_and_line ,
-                                                 struct frame_id);
-

 /* From misc files */
 
 extern void default_print_registers_info (struct gdbarch *gdbarch,
 /* From misc files */
 
 extern void default_print_registers_info (struct gdbarch *gdbarch,


@@ -175,17 +106,27 @@ 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);
+/* Default implementation of gdbarch_print_float_info.  Print
+   the values of all floating point registers.  */
+
+extern void default_print_float_info (struct gdbarch *gdbarch,
+                                     struct ui_file *file,
+                                     struct frame_info *frame,
+                                     const char *args);
+
+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_ours (struct target_ops *self);

 
 

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

 
 

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

 
 

-extern void terminal_init_inferior_with_pgrp (int pgrp);
+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 */
 


@@ -200,36 +141,13 @@ extern void startup_inferior (int);
 
 extern char *construct_inferior_arguments (int, char **);
 
 
 extern char *construct_inferior_arguments (int, char **);
 

-/* From infrun.c */
-
-extern unsigned int debug_infrun;
-
-extern int stop_on_solib_events;
-
-extern void start_remote (int from_tty);
-
-extern void normal_stop (void);
-
-extern int signal_stop_state (int);
-
-extern int signal_print_state (int);
-
-extern int signal_pass_state (int);
-
-extern int signal_stop_update (int, int);
-
-extern int signal_print_update (int, int);
-
-extern int signal_pass_update (int, int);
-
-extern void get_last_target_status(ptid_t *ptid,
-                                   struct target_waitstatus *status);
-
-extern void follow_inferior_reset_breakpoints (void);
+/* From infcmd.c */

 
 

-void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
+/* Initial inferior setup.  Determines the exec file is not yet known,
+   takes any necessary post-attaching actions, fetches the target
+   description and syncs the shared library list.  */

 
 

-/* From infcmd.c */
+extern void setup_inferior (int from_tty);

 
 extern void post_create_inferior (struct target_ops *, int);
 
 
 extern void post_create_inferior (struct target_ops *, int);
 


@@ -254,7 +172,33 @@ extern void detach_command (char *, int);
 extern void notice_new_inferior (ptid_t, int, int);
 
 extern struct value *get_return_value (struct value *function,
 extern void notice_new_inferior (ptid_t, int, int);
 
 extern struct value *get_return_value (struct value *function,

-                                       struct type *value_type);
+                                      struct type *value_type);
+
+/* Prepare for execution command.  TARGET is the target that will run
+   the command.  BACKGROUND determines whether this is a foreground
+   (synchronous) or background (asynchronous) command.  */
+
+extern void prepare_execution_command (struct target_ops *target,
+                                      int background);
+
+/* 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.  */
 
 
 /* Address at which inferior stopped.  */
 


@@ -287,20 +231,20 @@ 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.  */


@@ -313,58 +257,16 @@ enum stop_kind
     STOP_QUIETLY_NO_SIGSTOP
   };
 
     STOP_QUIETLY_NO_SIGSTOP
   };
 

-/* Reverse execution.  */
-enum exec_direction_kind
-  {
-    EXEC_FORWARD,
-    EXEC_REVERSE
-  };
-
-/* The current execution direction.  This should only be set to enum
-   exec_direction_kind values.  It is only an int to make it
-   compatible with make_cleanup_restore_integer.  */
-extern int execution_direction;
-
-/* Save register contents here when executing a "finish" command or are
-   about to pop a stack dummy frame, if-and-only-if proceed_to_finish is set.
-   Thus this contains the return value from the called function (assuming
-   values are returned in a register).  */
-
-extern struct regcache *stop_registers;
-
-/* True if we are debugging displaced stepping.  */
-extern int debug_displaced;
-
-/* Dump LEN bytes at BUF in hex to FILE, followed by a newline.  */
-void displaced_step_dump_bytes (struct ui_file *file,
-                                const gdb_byte *buf, size_t len);
-
-struct displaced_step_closure *get_displaced_step_closure_by_addr (CORE_ADDR addr);

 \f
 /* Possible values for gdbarch_call_dummy_location.  */
 #define ON_STACK 1
 #define AT_ENTRY_POINT 4
 
 \f
 /* Possible values for gdbarch_call_dummy_location.  */
 #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
-#if !defined(START_INFERIOR_TRAPS_EXPECTED)
-#define START_INFERIOR_TRAPS_EXPECTED  2
-#endif
+/* 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 all supported
+   implementations.  */
+#define START_INFERIOR_TRAPS_EXPECTED  1

 
 struct private_inferior;
 
 
 struct private_inferior;
 


@@ -378,16 +280,6 @@ struct inferior_control_state
   enum stop_kind stop_soon;
 };
 
   enum stop_kind stop_soon;
 };
 

-/* Inferior process specific part of `struct infcall_suspend_state'.
-
-   Inferior thread counterpart is `struct thread_suspend_state'.  */
-
-#if 0 /* Currently unused and empty structures are not valid C.  */
-struct inferior_suspend_state
-{
-};
-#endif
-

 /* GDB represents the state of each program execution with an object
    called an inferior.  An inferior typically corresponds to a process
    but is more general and applies also to targets that do not have a
 /* GDB represents the state of each program execution with an object
    called an inferior.  An inferior typically corresponds to a process
    but is more general and applies also to targets that do not have a


@@ -412,16 +304,13 @@ struct inferior
   /* True if the PID was actually faked by GDB.  */
   int fake_pid_p;
 
   /* True if the PID was actually faked by GDB.  */
   int fake_pid_p;
 

+  /* The highest thread number this inferior ever had.  */
+  int highest_thread_num;
+

   /* State of GDB control of inferior process execution.
      See `struct inferior_control_state'.  */
   struct inferior_control_state control;
 
   /* State of GDB control of inferior process execution.
      See `struct inferior_control_state'.  */
   struct inferior_control_state control;
 

-  /* State of inferior process to restore after GDB is done with an inferior
-     call.  See `struct inferior_suspend_state'.  */
-#if 0 /* Currently unused and empty structures are not valid C.  */
-  struct inferior_suspend_state suspend;
-#endif
-

   /* True if this was an auto-created inferior, e.g. created from
      following a fork; false, if this inferior was manually added by
      the user, and we should not attempt to prune it
   /* True if this was an auto-created inferior, e.g. created from
      following a fork; false, if this inferior was manually added by
      the user, and we should not attempt to prune it


@@ -484,8 +373,14 @@ struct inferior
      specific thread, see `struct thread_info'.  */
   struct continuation *continuations;
 
      specific thread, see `struct thread_info'.  */
   struct continuation *continuations;
 

+  /* True if setup_inferior wasn't called for this inferior yet.
+     Until that is done, we must not access inferior memory or
+     registers, as we haven't determined the target
+     architecture/description.  */
+  int needs_setup;
+

   /* Private data used by the target vector implementation.  */
   /* Private data used by the target vector implementation.  */

-  struct private_inferior *private;
+  struct private_inferior *priv;

 
   /* HAS_EXIT_CODE is true if the inferior exited with an exit code.
      In this case, the EXIT_CODE field is also valid.  */
 
   /* HAS_EXIT_CODE is true if the inferior exited with an exit code.
      In this case, the EXIT_CODE field is also valid.  */


@@ -536,14 +431,7 @@ extern struct inferior *add_inferior (int pid);
    the CLI.  */
 extern struct inferior *add_inferior_silent (int pid);
 
    the CLI.  */
 extern struct inferior *add_inferior_silent (int pid);
 

-/* Delete an existing inferior list entry, due to inferior exit.  */
-extern void delete_inferior (int pid);
-
-extern void delete_inferior_1 (struct inferior *todel, int silent);
-
-/* Same as delete_inferior, but don't print new inferior notifications
-   to the CLI.  */
-extern void delete_inferior_silent (int pid);
+extern void delete_inferior (struct inferior *todel);

 
 /* Delete an existing inferior list entry, due to inferior detaching.  */
 extern void detach_inferior (int pid);
 
 /* Delete an existing inferior list entry, due to inferior detaching.  */
 extern void detach_inferior (int pid);


@@ -577,10 +465,14 @@ extern int valid_gdb_inferior_id (int num);
 /* Search function to lookup an inferior by target 'pid'.  */
 extern struct inferior *find_inferior_pid (int pid);
 
 /* Search function to lookup an inferior by target 'pid'.  */
 extern struct inferior *find_inferior_pid (int pid);
 

+/* Search function to lookup an inferior whose pid is equal to 'ptid.pid'. */
+extern struct inferior *find_inferior_ptid (ptid_t ptid);
+

 /* Search function to lookup an inferior by GDB 'num'.  */
 extern struct inferior *find_inferior_id (int num);
 
 /* Search function to lookup an inferior by GDB 'num'.  */
 extern struct inferior *find_inferior_id (int num);
 

-/* Find an inferior bound to PSPACE.  */
+/* Find an inferior bound to PSPACE, giving preference to the current
+   inferior.  */

 extern struct inferior *
   find_inferior_for_program_space (struct program_space *pspace);
 
 extern struct inferior *
   find_inferior_for_program_space (struct program_space *pspace);
 


@@ -601,6 +493,9 @@ extern struct inferior *iterate_over_inferiors (int (*) (struct inferior *,
 /* Returns true if the inferior list is not empty.  */
 extern int have_inferiors (void);
 
 /* Returns true if the inferior list is not empty.  */
 extern int have_inferiors (void);
 

+/* Returns the number of live inferiors (real live processes).  */
+extern int number_of_live_inferiors (void);
+

 /* Returns true if there are any live inferiors in the inferior list
    (not cores, not executables, real live processes).  */
 extern int have_live_inferiors (void);
 /* Returns true if there are any live inferiors in the inferior list
    (not cores, not executables, real live processes).  */
 extern int have_live_inferiors (void);


@@ -628,20 +523,4 @@ extern int number_of_inferiors (void);
 
 extern struct inferior *add_inferior_with_spaces (void);
 
 
 extern struct inferior *add_inferior_with_spaces (void);
 

-extern void update_observer_mode (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,
-   POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
-   numeric signal at all is obsolescent.  We are slightly more lenient
-   and allow 1-15 which should match host signal numbers on most
-   systems.  Use of symbolic signal names is strongly encouraged.  */
-
-enum gdb_signal gdb_signal_from_command (int num);
-

 #endif /* !defined (INFERIOR_H) */
 #endif /* !defined (INFERIOR_H) */