gdb: add target_ops::supports_displaced_step

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

diff --git a/gdb/inferior.h b/gdb/inferior.h
index fe94a01784df221c5d857ee97f2e2474ce4d2605..95af474eedeb77a025565c1f43bb7dd25f929759 100644 (file)
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -56,6 +56,8 @@ struct thread_info;
 #include "gdbsupport/common-inferior.h"
 #include "gdbthread.h"
 
+#include "process-stratum-target.h"
+
 struct infcall_suspend_state;
 struct infcall_control_state;
 
@@ -182,8 +184,6 @@ extern void child_interrupt (struct target_ops *self);
    STARTUP_INFERIOR.  */
 extern ptid_t gdb_startup_inferior (pid_t pid, int num_traps);
 
-extern char *construct_inferior_arguments (int, char **);
-
 /* From infcmd.c */
 
 /* Initial inferior setup.  Determines the exec file is not yet known,
@@ -206,7 +206,7 @@ extern void registers_info (const char *, int);
 
 extern void continue_1 (int all_threads);
 
-extern void interrupt_target_1 (int all_threads);
+extern void interrupt_target_1 (bool all_threads);
 
 using delete_longjmp_breakpoint_cleanup
   = FORWARD_SCOPE_EXIT (delete_longjmp_breakpoint);
@@ -308,6 +308,10 @@ extern inferior *current_inferior ();
 
 extern void set_current_inferior (inferior *);
 
+/* Switch inferior (and program space) to INF, and switch to no thread
+   selected.  */
+extern void switch_to_inferior_no_thread (inferior *inf);
+
 /* 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
@@ -339,6 +343,35 @@ public:
   /* Returns true if we can delete this inferior.  */
   bool deletable () const { return refcount () == 0; }
 
+  /* Push T in this inferior's target stack.  */
+  void push_target (struct target_ops *t)
+  { m_target_stack.push (t); }
+
+  /* Unpush T from this inferior's target stack.  */
+  int unpush_target (struct target_ops *t)
+  { return m_target_stack.unpush (t); }
+
+  /* Returns true if T is pushed in this inferior's target stack.  */
+  bool target_is_pushed (target_ops *t)
+  { return m_target_stack.is_pushed (t); }
+
+  /* Find the target beneath T in this inferior's target stack.  */
+  target_ops *find_target_beneath (const target_ops *t)
+  { return m_target_stack.find_beneath (t); }
+
+  /* Return the target at the top of this inferior's target stack.  */
+  target_ops *top_target ()
+  { return m_target_stack.top (); }
+
+  /* Return the target at process_stratum level in this inferior's
+     target stack.  */
+  struct process_stratum_target *process_target ()
+  { return (process_stratum_target *) m_target_stack.at (process_stratum); }
+
+  /* Return the target at STRATUM in this inferior's target stack.  */
+  target_ops *target_at (enum strata stratum)
+  { return m_target_stack.at (stratum); }
+
   bool has_execution ()
   { return target_has_execution_1 (this); }
 
@@ -503,6 +536,10 @@ public:
 
   /* Per inferior data-pointers required by other GDB modules.  */
   REGISTRY_FIELDS;
+
+private:
+  /* The inferior's target stack.  */
+  target_stack m_target_stack;
 };
 
 /* Keep a registry of per-inferior data-pointers required by other GDB
@@ -533,14 +570,14 @@ extern void exit_inferior_num_silent (int num);
 
 extern void inferior_appeared (struct inferior *inf, int pid);
 
-/* Get rid of all inferiors.  */
-extern void discard_all_inferiors (void);
+/* Search function to lookup an inferior of TARG by target 'pid'.  */
+extern struct inferior *find_inferior_pid (process_stratum_target *targ,
+                                          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 of TARG whose pid is equal to
+   'ptid.pid'. */
+extern struct inferior *find_inferior_ptid (process_stratum_target *targ,
+                                           ptid_t ptid);
 
 /* Search function to lookup an inferior by GDB 'num'.  */
 extern struct inferior *find_inferior_id (int num);
@@ -550,25 +587,12 @@ extern struct inferior *find_inferior_id (int num);
 extern struct inferior *
   find_inferior_for_program_space (struct program_space *pspace);
 
-/* Inferior iterator function.
-
-   Calls a callback function once for each inferior, so long as the
-   callback function returns false.  If the callback function returns
-   true, the iteration will end and the current inferior will be
-   returned.  This can be useful for implementing a search for a
-   inferior with arbitrary attributes, or for applying some operation
-   to every inferior.
-
-   It is safe to delete the iterated inferior from the callback.  */
-extern struct inferior *iterate_over_inferiors (int (*) (struct inferior *,
-                                                        void *),
-                                               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 the number of live inferiors running on PROC_TARGET (real
+   live processes with execution).  */
+extern int number_of_live_inferiors (process_stratum_target *proc_target);
 
 /* Returns true if there are any live inferiors in the inferior list
    (not cores, not executables, real live processes).  */
@@ -625,18 +649,18 @@ all_inferiors_safe ()
 */
 
 inline all_inferiors_range
-all_inferiors ()
+all_inferiors (process_stratum_target *proc_target = nullptr)
 {
-  return {};
+  return all_inferiors_range (proc_target);
 }
 
 /* Return a range that can be used to walk over all inferiors with PID
    not zero, with range-for.  */
 
 inline all_non_exited_inferiors_range
-all_non_exited_inferiors ()
+all_non_exited_inferiors (process_stratum_target *proc_target = nullptr)
 {
-  return {};
+  return all_non_exited_inferiors_range (proc_target);
 }
 
 /* Prune away automatically added inferiors that aren't required