diff --git a/sim/h8300/ChangeLog b/sim/h8300/ChangeLog
index 95c8f5738a..dca05c8be2 100644
--- a/sim/h8300/ChangeLog
+++ b/sim/h8300/ChangeLog
@@ -1,3 +1,9 @@
+2009-12-09  Yoshinori Sato <ysato@users.sourceforge.jp>
+	* compile.c(fetch_1): Fix pre-dec, pre-inc, post-dec and post-inc.
+	Index registers not masked memory areas.
+	Only simply increment or decrement.
+	* compile.c(store_1): Ditto.
+
 2009-08-22  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	* config.in: Regenerate.
diff --git a/sim/h8300/compile.c b/sim/h8300/compile.c
index a7e2694e33..70394e639b 100644
--- a/sim/h8300/compile.c
+++ b/sim/h8300/compile.c
@@ -1386,105 +1386,93 @@ fetch_1 (SIM_DESC sd, ea_type *arg, int *val, int twice)
       break;
     case X (OP_POSTINC, SB):	/* Register indirect w/post-incr: byte.  */
       t = GET_L_REG (rn);
-      t &= h8_get_mask (sd);
-      r = GET_MEMORY_B (t);
+      r = GET_MEMORY_B (t & h8_get_mask (sd));
       if (!twice)
 	t += 1;
-      t = t & h8_get_mask (sd);
       SET_L_REG (rn, t);
       *val = r;
       break;
     case X (OP_POSTINC, SW):	/* Register indirect w/post-incr: word.  */
       t = GET_L_REG (rn);
-      t &= h8_get_mask (sd);
-      r = GET_MEMORY_W (t);
+      r = GET_MEMORY_W (t & h8_get_mask (sd));
       if (!twice)
 	t += 2;
-      t = t & h8_get_mask (sd);
       SET_L_REG (rn, t);
       *val = r;
       break;
     case X (OP_POSTINC, SL):	/* Register indirect w/post-incr: long.  */
       t = GET_L_REG (rn);
-      t &= h8_get_mask (sd);
-      r = GET_MEMORY_L (t);
+      r = GET_MEMORY_L (t & h8_get_mask (sd));
       if (!twice)
 	t += 4;
-      t = t & h8_get_mask (sd);
       SET_L_REG (rn, t);
       *val = r;
       break;
 
     case X (OP_POSTDEC, SB):	/* Register indirect w/post-decr: byte.  */
       t = GET_L_REG (rn);
-      t &= h8_get_mask (sd);
-      r = GET_MEMORY_B (t);
+      r = GET_MEMORY_B (t & h8_get_mask (sd));
       if (!twice)
 	t -= 1;
-      t = t & h8_get_mask (sd);
       SET_L_REG (rn, t);
       *val = r;
       break;
     case X (OP_POSTDEC, SW):	/* Register indirect w/post-decr: word.  */
       t = GET_L_REG (rn);
-      t &= h8_get_mask (sd);
-      r = GET_MEMORY_W (t);
+      r = GET_MEMORY_W (t & h8_get_mask (sd));
       if (!twice)
 	t -= 2;
-      t = t & h8_get_mask (sd);
       SET_L_REG (rn, t);
       *val = r;
       break;
     case X (OP_POSTDEC, SL):	/* Register indirect w/post-decr: long.  */
       t = GET_L_REG (rn);
-      t &= h8_get_mask (sd);
-      r = GET_MEMORY_L (t);
+      r = GET_MEMORY_L (t & h8_get_mask (sd));
       if (!twice)
 	t -= 4;
-      t = t & h8_get_mask (sd);
       SET_L_REG (rn, t);
       *val = r;
       break;
 
     case X (OP_PREDEC, SB):	/* Register indirect w/pre-decr: byte.  */
       t = GET_L_REG (rn) - 1;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       *val = GET_MEMORY_B (t);
       break;
       
     case X (OP_PREDEC, SW):	/* Register indirect w/pre-decr: word.  */
       t = GET_L_REG (rn) - 2;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       *val = GET_MEMORY_W (t);
       break;
       
     case X (OP_PREDEC, SL):	/* Register indirect w/pre-decr: long.  */
       t = GET_L_REG (rn) - 4;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       *val = GET_MEMORY_L (t);
       break;
       
     case X (OP_PREINC, SB):	/* Register indirect w/pre-incr: byte.  */
       t = GET_L_REG (rn) + 1;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       *val = GET_MEMORY_B (t);
       break;
 
     case X (OP_PREINC, SW):	/* Register indirect w/pre-incr: long.  */
       t = GET_L_REG (rn) + 2;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       *val = GET_MEMORY_W (t);
       break;
 
     case X (OP_PREINC, SL):	/* Register indirect w/pre-incr: long.  */
       t = GET_L_REG (rn) + 4;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       *val = GET_MEMORY_L (t);
       break;
 
@@ -1621,8 +1609,8 @@ store_1 (SIM_DESC sd, ea_type *arg, int n, int twice)
       t = GET_L_REG (rn);
       if (!twice)
 	t -= 1;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       SET_MEMORY_B (t, n);
 
       break;
@@ -1630,8 +1618,8 @@ store_1 (SIM_DESC sd, ea_type *arg, int n, int twice)
       t = GET_L_REG (rn);
       if (!twice)
 	t -= 2;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       SET_MEMORY_W (t, n);
       break;
 
@@ -1639,8 +1627,8 @@ store_1 (SIM_DESC sd, ea_type *arg, int n, int twice)
       t = GET_L_REG (rn);
       if (!twice)
 	t -= 4;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       SET_MEMORY_L (t, n);
       break;
 
@@ -1648,8 +1636,8 @@ store_1 (SIM_DESC sd, ea_type *arg, int n, int twice)
       t = GET_L_REG (rn);
       if (!twice)
 	t += 1;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       SET_MEMORY_B (t, n);
 
       break;
@@ -1657,8 +1645,8 @@ store_1 (SIM_DESC sd, ea_type *arg, int n, int twice)
       t = GET_L_REG (rn);
       if (!twice)
 	t += 2;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       SET_MEMORY_W (t, n);
       break;
 
@@ -1666,45 +1654,51 @@ store_1 (SIM_DESC sd, ea_type *arg, int n, int twice)
       t = GET_L_REG (rn);
       if (!twice)
 	t += 4;
-      t &= h8_get_mask (sd);
       SET_L_REG (rn, t);
+      t &= h8_get_mask (sd);
       SET_MEMORY_L (t, n);
       break;
 
     case X (OP_POSTDEC, SB):	/* Register indirect w/post-decr, byte.  */
-      t = GET_L_REG (rn) & h8_get_mask (sd);
-      SET_MEMORY_B (t, n);
+      t = GET_L_REG (rn);
       SET_L_REG (rn, t - 1);
+      t &= h8_get_mask (sd);
+      SET_MEMORY_B (t, n);
       break;
 
     case X (OP_POSTDEC, SW):	/* Register indirect w/post-decr, word.  */
-      t = GET_L_REG (rn) & h8_get_mask (sd);
-      SET_MEMORY_W (t, n);
+      t = GET_L_REG (rn);
       SET_L_REG (rn, t - 2);
+      t &= h8_get_mask (sd);
+      SET_MEMORY_W (t, n);
       break;
 
     case X (OP_POSTDEC, SL):	/* Register indirect w/post-decr, long.  */
-      t = GET_L_REG (rn) & h8_get_mask (sd);
-      SET_MEMORY_L (t, n);
+      t = GET_L_REG (rn);
       SET_L_REG (rn, t - 4);
+      t &= h8_get_mask (sd);
+      SET_MEMORY_L (t, n);
       break;
 
     case X (OP_POSTINC, SB):	/* Register indirect w/post-incr, byte.  */
-      t = GET_L_REG (rn) & h8_get_mask (sd);
-      SET_MEMORY_B (t, n);
+      t = GET_L_REG (rn);
       SET_L_REG (rn, t + 1);
+      t &= h8_get_mask (sd);
+      SET_MEMORY_B (t, n);
       break;
 
     case X (OP_POSTINC, SW):	/* Register indirect w/post-incr, word.  */
-      t = GET_L_REG (rn) & h8_get_mask (sd);
-      SET_MEMORY_W (t, n);
+      t = GET_L_REG (rn);
       SET_L_REG (rn, t + 2);
+      t &= h8_get_mask (sd);
+      SET_MEMORY_W (t, n);
       break;
 
     case X (OP_POSTINC, SL):	/* Register indirect w/post-incr, long.  */
-      t = GET_L_REG (rn) & h8_get_mask (sd);
-      SET_MEMORY_L (t, n);
+      t = GET_L_REG (rn);
       SET_L_REG (rn, t + 4);
+      t &= h8_get_mask (sd);
+      SET_MEMORY_L (t, n);
       break;
 
     case X (OP_DISP, SB):	/* Register indirect w/displacement, byte.  */