2004-04-26 Orjan Friberg <orjanf@axis.com>

	* frame.c: Include "observer.h".
	(frame_observer_target_changed): New function.
	(_initialize_frame): Attach target_changed observer.
	* regcache.c: Include "observer.h".
	(regcache_observer_target_changed): New function.
	(_initialize_regcache): Attach target_changed observer.
	* valops.c: Include "observer.h".
	(value_assign): Notify target_changed event when modifying register.
	* Makefile.in (frame.o, regcache.o, valops.o): Add $(observer_h).

5 files changed, 39 insertions, 3 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index ccc04d2..2b85455 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,17 @@
 2004-04-26  Orjan Friberg <orjanf@axis.com>
 
+	* frame.c: Include "observer.h".
+	(frame_observer_target_changed): New function.
+	(_initialize_frame): Attach target_changed observer.
+	* regcache.c: Include "observer.h".
+	(regcache_observer_target_changed): New function.
+	(_initialize_regcache): Attach target_changed observer.
+	* valops.c: Include "observer.h".
+	(value_assign): Notify target_changed event when modifying register.
+	* Makefile.in (frame.o, regcache.o, valops.o): Add $(observer_h).
+
+2004-04-26  Orjan Friberg <orjanf@axis.com>
+
 	From Paul Koning <pkoning@equallogic.com>:
 	* breakpoint.c (free_valchain): New function.
 	(insert_bp_location, delete_breakpoint): Use free_valchain.
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 2e8944e..0262409 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -1775,7 +1775,7 @@ frame.o: frame.c $(defs_h) $(frame_h) $(target_h) $(value_h) $(inferior_h) \
 	$(regcache_h) $(gdb_assert_h) $(gdb_string_h) $(user_regs_h) \
 	$(gdb_obstack_h) $(dummy_frame_h) $(sentinel_frame_h) $(gdbcore_h) \
 	$(annotate_h) $(language_h) $(frame_unwind_h) $(frame_base_h) \
-	$(command_h) $(gdbcmd_h)
+	$(command_h) $(gdbcmd_h) $(observer_h)
 frame-unwind.o: frame-unwind.c $(defs_h) $(frame_h) $(frame_unwind_h) \
 	$(gdb_assert_h) $(dummy_frame_h) $(gdb_obstack_h)
 frv-linux-tdep.o: frv-linux-tdep.c $(defs_h) $(target_h) $(frame_h) \
@@ -2190,7 +2190,7 @@ p-valprint.o: p-valprint.c $(defs_h) $(gdb_obstack_h) $(symtab_h) \
 	$(language_h) $(target_h) $(annotate_h) $(p_lang_h) $(cp_abi_h)
 regcache.o: regcache.c $(defs_h) $(inferior_h) $(target_h) $(gdbarch_h) \
 	$(gdbcmd_h) $(regcache_h) $(reggroups_h) $(gdb_assert_h) \
-	$(gdb_string_h) $(gdbcmd_h)
+	$(gdb_string_h) $(gdbcmd_h) $(observer_h)
 reggroups.o: reggroups.c $(defs_h) $(reggroups_h) $(gdbtypes_h) \
 	$(gdb_assert_h) $(regcache_h) $(command_h) $(gdbcmd_h)
 remote.o: remote.c $(defs_h) $(gdb_string_h) $(inferior_h) $(bfd_h) \
@@ -2493,7 +2493,7 @@ valops.o: valops.c $(defs_h) $(symtab_h) $(gdbtypes_h) $(value_h) $(frame_h) \
 	$(inferior_h) $(gdbcore_h) $(target_h) $(demangle_h) $(language_h) \
 	$(gdbcmd_h) $(regcache_h) $(cp_abi_h) $(block_h) $(infcall_h) \
 	$(dictionary_h) $(cp_support_h) $(gdb_string_h) $(gdb_assert_h) \
-	$(cp_support_h)
+	$(cp_support_h) $(observer_h)
 valprint.o: valprint.c $(defs_h) $(gdb_string_h) $(symtab_h) $(gdbtypes_h) \
 	$(value_h) $(gdbcore_h) $(gdbcmd_h) $(target_h) $(language_h) \
 	$(annotate_h) $(valprint_h) $(floatformat_h) $(doublest_h)
diff --git a/gdb/frame.c b/gdb/frame.c
index f9384fe..bdb6cb9 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -39,6 +39,7 @@
 #include "frame-base.h"
 #include "command.h"
 #include "gdbcmd.h"
+#include "observer.h"
 
 static struct frame_info *get_prev_frame_1 (struct frame_info *this_frame);
 
@@ -1237,6 +1238,14 @@ get_next_frame (struct frame_info *this_frame)
     return NULL;
 }
 
+/* Observer for the target_changed event.  */
+
+void
+frame_observer_target_changed (struct target_ops *target)
+{
+  flush_cached_frames ();
+}
+
 /* Flush the entire frame cache.  */
 
 void
@@ -2356,6 +2365,8 @@ _initialize_frame (void)
 {
   obstack_init (&frame_cache_obstack);
 
+  observer_attach_target_changed (frame_observer_target_changed);
+
   add_prefix_cmd ("backtrace", class_maintenance, set_backtrace_cmd, "\
 Set backtrace specific variables.\n\
 Configure backtrace variables such as the backtrace limit",
diff --git a/gdb/regcache.c b/gdb/regcache.c
index 91204b8..e775e4d 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -30,6 +30,7 @@
 #include "gdb_assert.h"
 #include "gdb_string.h"
 #include "gdbcmd.h"		/* For maintenanceprintlist.  */
+#include "observer.h"
 
 /*
  * DATA STRUCTURE
@@ -566,6 +567,14 @@ real_register (int regnum)
   return regnum >= 0 && regnum < NUM_REGS;
 }
 
+/* Observer for the target_changed event.  */
+
+void
+regcache_observer_target_changed (struct target_ops *target)
+{
+  registers_changed ();
+}
+
 /* Low level examining and depositing of registers.
 
    The caller is responsible for making sure that the inferior is
@@ -1697,6 +1706,8 @@ _initialize_regcache (void)
   DEPRECATED_REGISTER_GDBARCH_SWAP (deprecated_register_valid);
   deprecated_register_gdbarch_swap (NULL, 0, build_regcache);
 
+  observer_attach_target_changed (regcache_observer_target_changed);
+
   add_com ("flushregs", class_maintenance, reg_flush_command,
 	   "Force gdb to flush its register cache (maintainer command)");
 
diff --git a/gdb/valops.c b/gdb/valops.c
index be7dec5..5ab4149 100644
--- a/gdb/valops.c
+++ b/gdb/valops.c
@@ -42,6 +42,7 @@
 #include "gdb_string.h"
 #include "gdb_assert.h"
 #include "cp-support.h"
+#include "observer.h"
 
 extern int overload_debug;
 /* Local functions.  */
@@ -701,6 +702,7 @@ value_assign (struct value *toval, struct value *fromval)
 	if (deprecated_register_changed_hook)
 	  deprecated_register_changed_hook (-1);
 	target_changed_event ();
+	observer_notify_target_changed (&current_target);
 	break;
       }