Automatic date update in version.in

[deliverable/binutils-gdb.git] / sim / bfin / dv-bfin_ebiu_ddrc.c

diff --git a/sim/bfin/dv-bfin_ebiu_ddrc.c b/sim/bfin/dv-bfin_ebiu_ddrc.c
index a0095a13b5be4ed558550cb840b2ec6b2688fbb9..2e0066965f22d7f434230e0ddc160bd779f69de9 100644 (file)
--- a/sim/bfin/dv-bfin_ebiu_ddrc.c
+++ b/sim/bfin/dv-bfin_ebiu_ddrc.c
@@ -1,6 +1,6 @@
 /* Blackfin External Bus Interface Unit (EBIU) DDR Controller (DDRC) Model.
 
-   Copyright (C) 2010-2011 Free Software Foundation, Inc.
+   Copyright (C) 2010-2020 Free Software Foundation, Inc.
    Contributed by Analog Devices, Inc.
 
    This file is part of simulators.
@@ -68,6 +68,10 @@ bfin_ebiu_ddrc_io_write_buffer (struct hw *me, const void *source,
   bu32 *value32p;
   void *valuep;
 
+  /* Invalid access mode is higher priority than missing register.  */
+  if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, true))
+    return 0;
+
   if (nr_bytes == 4)
     value = dv_load_4 (source);
   else
@@ -84,11 +88,13 @@ bfin_ebiu_ddrc_io_write_buffer (struct hw *me, const void *source,
     {
     case mmr_offset(errmst):
     case mmr_offset(rstctl):
-      dv_bfin_mmr_require_16 (me, addr, nr_bytes, true);
+      if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
+       return 0;
       *value16p = value;
       break;
     default:
-      dv_bfin_mmr_require_32 (me, addr, nr_bytes, true);
+      if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, true))
+       return 0;
       *value32p = value;
       break;
     }
@@ -106,6 +112,10 @@ bfin_ebiu_ddrc_io_read_buffer (struct hw *me, void *dest,
   bu16 *value16p;
   void *valuep;
 
+  /* Invalid access mode is higher priority than missing register.  */
+  if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, true))
+    return 0;
+
   mmr_off = addr - ddrc->base;
   valuep = (void *)((unsigned long)ddrc + mmr_base() + mmr_off);
   value16p = valuep;
@@ -117,11 +127,13 @@ bfin_ebiu_ddrc_io_read_buffer (struct hw *me, void *dest,
     {
     case mmr_offset(errmst):
     case mmr_offset(rstctl):
-      dv_bfin_mmr_require_16 (me, addr, nr_bytes, false);
+      if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, false))
+       return 0;
       dv_store_2 (dest, *value16p);
       break;
     default:
-      dv_bfin_mmr_require_32 (me, addr, nr_bytes, false);
+      if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, false))
+       return 0;
       dv_store_4 (dest, *value32p);
       break;
     }