X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=sim%2Fbfin%2Fdv-bfin_wp.c;h=5ab4729b4deae7b4b64812cc2d589e14a3a434ec;hb=160f8a8f32f5566077e4a4b13943bc7c70bc5da2;hp=9f35ac698b0b41d0657086c407d1960c3e22dfcd;hpb=81d126c3be15c1104b082683104856bede936d47;p=deliverable%2Fbinutils-gdb.git

diff --git a/sim/bfin/dv-bfin_wp.c b/sim/bfin/dv-bfin_wp.c
index 9f35ac698b..5ab4729b4d 100644
--- a/sim/bfin/dv-bfin_wp.c
+++ b/sim/bfin/dv-bfin_wp.c
@@ -1,6 +1,6 @@
 /* Blackfin Watchpoint (WP) 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.
@@ -77,6 +77,10 @@ bfin_wp_io_write_buffer (struct hw *me, const void *source, int space,
   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 - wp->base;
   valuep = (void *)((unsigned long)wp + mmr_base() + mmr_off);
@@ -99,7 +103,7 @@ bfin_wp_io_write_buffer (struct hw *me, const void *source, int space,
       break;
     default:
       dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
-      break;
+      return 0;
     }
 
   return nr_bytes;
@@ -114,6 +118,10 @@ bfin_wp_io_read_buffer (struct hw *me, void *dest, int space,
   bu32 value;
   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 - wp->base;
   valuep = (void *)((unsigned long)wp + mmr_base() + mmr_off);
 
@@ -131,9 +139,8 @@ bfin_wp_io_read_buffer (struct hw *me, void *dest, int space,
       value = *valuep;
       break;
     default:
-      while (1) /* Core MMRs -> exception -> doesn't return.  */
-	dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
-      break;
+      dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
+      return 0;
     }
 
   dv_store_4 (dest, value);