X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=sim%2Fbfin%2Fdv-bfin_ctimer.c;h=29a0e98c580fcbdfb115f356f014269947014a98;hb=73ddaae1555b44a4af79e49f63785e182e037553;hp=6aa5c31d6162cbcc74a43baa11467f83778514ac;hpb=32d0add0a654c1204ab71dc8a55d9374538c4b33;p=deliverable%2Fbinutils-gdb.git

diff --git a/sim/bfin/dv-bfin_ctimer.c b/sim/bfin/dv-bfin_ctimer.c
index 6aa5c31d61..29a0e98c58 100644
--- a/sim/bfin/dv-bfin_ctimer.c
+++ b/sim/bfin/dv-bfin_ctimer.c
@@ -1,6 +1,6 @@
 /* Blackfin Core Timer model.
 
-   Copyright (C) 2010-2015 Free Software Foundation, Inc.
+   Copyright (C) 2010-2019 Free Software Foundation, Inc.
    Contributed by Analog Devices, Inc.
 
    This file is part of simulators.
@@ -127,6 +127,10 @@ bfin_ctimer_io_write_buffer (struct hw *me, const void *source,
   bu32 value;
   bu32 *valuep;
 
+  /* Invalid access mode is higher priority than missing register.  */
+  if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, true))
+    return 0;
+
   value = dv_load_4 (source);
   mmr_off = addr - ctimer->base;
   valuep = (void *)((unsigned long)ctimer + mmr_base() + mmr_off);
@@ -192,6 +196,10 @@ bfin_ctimer_io_read_buffer (struct hw *me, void *dest,
   bu32 mmr_off;
   bu32 *valuep;
 
+  /* Invalid access mode is higher priority than missing register.  */
+  if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, false))
+    return 0;
+
   mmr_off = addr - ctimer->base;
   valuep = (void *)((unsigned long)ctimer + mmr_base() + mmr_off);