convert to_fetch_registers

2014-02-19  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (target_fetch_registers): Unconditionally delegate.
	* target.h (struct target_ops) <to_fetch_registers>: Use
	TARGET_DEFAULT_NORETURN.

4 files changed, 27 insertions, 13 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 95d308f..1f352ea 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,6 +1,13 @@
 2014-02-19  Tom Tromey  <tromey@redhat.com>
 
 	* target-delegates.c: Rebuild.
+	* target.c (target_fetch_registers): Unconditionally delegate.
+	* target.h (struct target_ops) <to_fetch_registers>: Use
+	TARGET_DEFAULT_NORETURN.
+
+2014-02-19  Tom Tromey  <tromey@redhat.com>
+
+	* target-delegates.c: Rebuild.
 	* target.c (update_current_target): Don't inherit or default
 	to_stop.
 	* target.h (struct target_ops) <to_stop>: Use
diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 1220058..f813e35 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -61,6 +61,18 @@ tdefault_wait (struct target_ops *self, ptid_t arg1, struct target_waitstatus *a
 }
 
 static void
+delegate_fetch_registers (struct target_ops *self, struct regcache *arg1, int arg2)
+{
+  self = self->beneath;
+  self->to_fetch_registers (self, arg1, arg2);
+}
+
+static void
+tdefault_fetch_registers (struct target_ops *self, struct regcache *arg1, int arg2)
+{
+}
+
+static void
 delegate_store_registers (struct target_ops *self, struct regcache *arg1, int arg2)
 {
   self = self->beneath;
@@ -1087,6 +1099,8 @@ install_delegators (struct target_ops *ops)
     ops->to_resume = delegate_resume;
   if (ops->to_wait == NULL)
     ops->to_wait = delegate_wait;
+  if (ops->to_fetch_registers == NULL)
+    ops->to_fetch_registers = delegate_fetch_registers;
   if (ops->to_store_registers == NULL)
     ops->to_store_registers = delegate_store_registers;
   if (ops->to_prepare_to_store == NULL)
@@ -1267,6 +1281,7 @@ install_dummy_methods (struct target_ops *ops)
   ops->to_detach = tdefault_detach;
   ops->to_resume = tdefault_resume;
   ops->to_wait = tdefault_wait;
+  ops->to_fetch_registers = tdefault_fetch_registers;
   ops->to_store_registers = tdefault_store_registers;
   ops->to_prepare_to_store = tdefault_prepare_to_store;
   ops->to_files_info = tdefault_files_info;
diff --git a/gdb/target.c b/gdb/target.c
index 0432dfd..f656db3 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -3758,18 +3758,9 @@ debug_print_register (const char * func,
 void
 target_fetch_registers (struct regcache *regcache, int regno)
 {
-  struct target_ops *t;
-
-  for (t = current_target.beneath; t != NULL; t = t->beneath)
-    {
-      if (t->to_fetch_registers != NULL)
-	{
-	  t->to_fetch_registers (t, regcache, regno);
-	  if (targetdebug)
-	    debug_print_register ("target_fetch_registers", regcache, regno);
-	  return;
-	}
-    }
+  current_target.to_fetch_registers (&current_target, regcache, regno);
+  if (targetdebug)
+    debug_print_register ("target_fetch_registers", regcache, regno);
 }
 
 void
diff --git a/gdb/target.h b/gdb/target.h
index 64f6b6e..0aee7a9 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -415,7 +415,8 @@ struct target_ops
     ptid_t (*to_wait) (struct target_ops *,
 		       ptid_t, struct target_waitstatus *, int)
       TARGET_DEFAULT_NORETURN (noprocess ());
-    void (*to_fetch_registers) (struct target_ops *, struct regcache *, int);
+    void (*to_fetch_registers) (struct target_ops *, struct regcache *, int)
+      TARGET_DEFAULT_IGNORE ();
     void (*to_store_registers) (struct target_ops *, struct regcache *, int)
       TARGET_DEFAULT_NORETURN (noprocess ());
     void (*to_prepare_to_store) (struct target_ops *, struct regcache *)