From: Tristan Gingold <gingold@adacore.com>
Date: Thu, 12 Nov 2009 15:24:04 +0000 (+0000)
Subject: 2009-11-12  Tristan Gingold  <gingold@adacore.com>
X-Git-Tag: cgen-snapshot-20091201~203
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8f0ac700824d511485f1b5608d789afa1c64fdb7;p=external%2Fbinutils.git

2009-11-12  Tristan Gingold  <gingold@adacore.com>

	* avr/interp.c (sim_write): Allow byte access.
	(sim_read): Ditto.
---

diff --git a/sim/ChangeLog b/sim/ChangeLog
index 18f555c..35055a9 100644
--- a/sim/ChangeLog
+++ b/sim/ChangeLog
@@ -1,5 +1,10 @@
 2009-11-12  Tristan Gingold  <gingold@adacore.com>
 
+	* avr/interp.c (sim_write): Allow byte access.
+	(sim_read): Ditto.
+
+2009-11-12  Tristan Gingold  <gingold@adacore.com>
+
 	* avr/interp.c (sim_load): Clear memory before loading.
 
 2009-11-09  Tristan Gingold  <gingold@adacore.com>
diff --git a/sim/avr/interp.c b/sim/avr/interp.c
index 8d267dd..109046b 100644
--- a/sim/avr/interp.c
+++ b/sim/avr/interp.c
@@ -1628,16 +1628,20 @@ sim_write (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size)
 
   if (addr >= 0 && addr < SRAM_VADDR)
     {
-      if (addr & 1)
-	return 0;
-      addr /= 2;
-      while (size > 1 && addr < MAX_AVR_FLASH)
+      while (size > 0 && addr < (MAX_AVR_FLASH << 1))
 	{
-	  flash[addr].op = buffer[0] | (buffer[1] << 8);
-	  flash[addr].code = OP_unknown;
+          word val = flash[addr >> 1].op;
+
+          if (addr & 1)
+            val = (val & 0xff) | (buffer[0] << 8);
+          else
+            val = (val & 0xff00) | buffer[0];
+
+	  flash[addr >> 1].op = val;
+	  flash[addr >> 1].code = OP_unknown;
 	  addr++;
-	  buffer += 2;
-	  size -= 2;
+	  buffer++;
+	  size--;
 	}
       return osize - size;
     }
@@ -1660,16 +1664,16 @@ sim_read (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size)
 
   if (addr >= 0 && addr < SRAM_VADDR)
     {
-      if (addr & 1)
-	return 0;
-      addr /= 2;
-      while (size > 1 && addr < MAX_AVR_FLASH)
+      while (size > 0 && addr < (MAX_AVR_FLASH << 1))
 	{
-	  buffer[0] = flash[addr].op;
-	  buffer[1] = flash[addr].op >> 8;
+          word val = flash[addr >> 1].op;
+
+          if (addr & 1)
+            val >>= 8;
+
+          *buffer++ = val;
 	  addr++;
-	  buffer += 2;
-	  size -= 2;
+	  size--;
 	}
       return osize - size;
     }