2001-08-10 Michael Snyder <msnyder@redhat.com>

	* regcache.c (legacy_write_register_gen): Don't 'optimize out'
        a write_register to a pseudo-reg.  Target_store_pseudo_register
        needs to get called, because these regs may be computed and may
        have side-effects.

1 files changed, 9 insertions, 8 deletions

diff --git a/gdb/regcache.c b/gdb/regcache.c
index b939d9a8fb1..ffd13bf8a4b 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -334,15 +334,16 @@ legacy_write_register_gen (int regnum, char *myaddr)
 
   size = REGISTER_RAW_SIZE (regnum);
 
-  /* If we have a valid copy of the register, and new value == old value,
-     then don't bother doing the actual store. */
-
-  if (register_cached (regnum)
-      && memcmp (register_buffer (regnum), myaddr, size) == 0)
-    return;
-
   if (real_register (regnum))
-    target_prepare_to_store ();
+    {
+      /* If we have a valid copy of the register, and new value == old
+	 value, then don't bother doing the actual store. */
+      if (register_cached (regnum)
+	  && memcmp (register_buffer (regnum), myaddr, size) == 0)
+	return;
+      else
+	target_prepare_to_store ();
+    }
 
   memcpy (register_buffer (regnum), myaddr, size);