Automatic date update in version.in

[binutils-gdb.git] / gdb / gdbthread.h

diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
index 2602e8bc065531da21f842d3eaad9441b554803d..83b2616fbe1b969c096155057a55d960048f7192 100644 (file)
--- a/gdb/gdbthread.h
+++ b/gdb/gdbthread.h
@@ -29,6 +29,7 @@ struct symtab;
 #include "inferior.h"
 #include "btrace.h"
 #include "common/vec.h"
+#include "target/waitstatus.h"
 
 /* Frontend view of the thread state.  Possible extensions: stepping,
    finishing, until(ling),...  */
@@ -157,6 +158,23 @@ struct thread_suspend_state
      should be suppressed, the core will take care of clearing this
      before the target is resumed.  */
   enum gdb_signal stop_signal;
+
+  /* The reason the thread last stopped, if we need to track it
+     (breakpoint, watchpoint, etc.)  */
+  enum target_stop_reason stop_reason;
+
+  /* The waitstatus for this thread's last event.  */
+  struct target_waitstatus waitstatus;
+  /* If true WAITSTATUS hasn't been handled yet.  */
+  int waitstatus_pending_p;
+
+  /* Record the pc of the thread the last time it stopped.  (This is
+     not the current thread's PC as that may have changed since the
+     last stop, e.g., "return" command, or "p $pc = 0xf000").  This is
+     used in coordination with stop_reason and waitstatus_pending_p:
+     if the thread's PC is changed since it last stopped, a pending
+     breakpoint waitstatus is discarded.  */
+  CORE_ADDR stop_pc;
 };
 
 typedef struct value *value_ptr;
@@ -181,6 +199,15 @@ struct thread_info
      thread is off and running.  */
   int executing;
 
+  /* Non-zero if this thread is resumed from infrun's perspective.
+     Note that a thread can be marked both as not-executing and
+     resumed at the same time.  This happens if we try to resume a
+     thread that has a wait status pending.  We shouldn't let the
+     thread really run until that wait status has been processed, but
+     we should not process that wait status if we didn't try to let
+     the thread run.  */
+  int resumed;
+
   /* Frontend view of the thread state.  Note that the THREAD_RUNNING/
      THREAD_STOPPED states are different from EXECUTING.  When the
      thread is stopped internally while handling an internal event,
@@ -206,8 +233,10 @@ struct thread_info
 
   /* Internal stepping state.  */
 
-  /* Record the pc of the thread the last time it stopped.  This is
-     maintained by proceed and keep_going, and used in
+  /* Record the pc of the thread the last time it was resumed.  (It
+     can't be done on stop as the PC may change since the last stop,
+     e.g., "return" command, or "p $pc = 0xf000").  This is maintained
+     by proceed and keep_going, and among other things, it's used in
      adjust_pc_after_break to distinguish a hardware single-step
      SIGTRAP from a breakpoint SIGTRAP.  */
   CORE_ADDR prev_pc;
@@ -396,6 +425,11 @@ extern int thread_count (void);
 /* Switch from one thread to another.  */
 extern void switch_to_thread (ptid_t ptid);
 
+/* Marks or clears thread(s) PTID as resumed.  If PTID is
+   MINUS_ONE_PTID, applies to all threads.  If ptid_is_pid(PTID) is
+   true, applies to all threads of the process pointed at by PTID.  */
+extern void set_resumed (ptid_t ptid, int resumed);
+
 /* Marks thread PTID is running, or stopped. 
    If PTID is minus_one_ptid, marks all threads.  */
 extern void set_running (ptid_t ptid, int running);