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[Mograsim.git] / plugins / net.mograsim.plugin.core / src / net / mograsim / plugin / launch / MainMemoryBlockExtension.java

diff --git a/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MainMemoryBlockExtension.java b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MainMemoryBlockExtension.java
index 8d16998..5d4cf5d 100644 (file)
--- a/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MainMemoryBlockExtension.java
+++ b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MainMemoryBlockExtension.java
@@ -25,7 +25,8 @@ import net.mograsim.preferences.Preferences;
 
 public class MainMemoryBlockExtension extends PlatformObject implements IMemoryBlockExtension
 {
-       // TODO do we want to make the memory accessible byte-wise?
+       private static final byte MEM_BYTE_FLAGS = (byte) (MemoryByte.READABLE | MemoryByte.WRITABLE | MemoryByte.ENDIANESS_KNOWN
+                       | MemoryByte.BIG_ENDIAN);
 
        private final String expression;
        private final MachineDebugTarget debugTarget;
@@ -71,7 +72,7 @@ public class MainMemoryBlockExtension extends PlatformObject implements IMemoryB
 
                if (baseAddrWords.compareTo(minAddrWords) < 0 || baseAddrWords.compareTo(maxAddrWords) > 0)
                        throwDebugException("Base address out of range");
-               if (baseAddrWords.add(lengthWords).compareTo(maxAddrWords) > 0)
+               if (baseAddrWords.add(lengthWords).subtract(BigInteger.ONE).compareTo(maxAddrWords) > 0)
                        throwDebugException("End address out of range");
 
                this.clients = new HashSet<>();
@@ -194,7 +195,7 @@ public class MainMemoryBlockExtension extends PlatformObject implements IMemoryB
        @Override
        public int getAddressSize() throws DebugException
        {
-               return Long.BYTES;
+               return (getBigLength().bitLength() + 7) / 8;
        }
 
        @Override
@@ -242,9 +243,9 @@ public class MainMemoryBlockExtension extends PlatformObject implements IMemoryB
                                int l = wordBytes[0] == 0 ? 1 : 0;
                                int k;
                                for (k = 0; k < cellWidthBytes - wordBytes.length + l; k++)
-                                       bytes[i + k] = new MemoryByte();
+                                       bytes[i + k] = new MemoryByte((byte) 0, MEM_BYTE_FLAGS);
                                for (; k < cellWidthBytes; k++, l++)
-                                       bytes[i + k] = new MemoryByte(wordBytes[l]);
+                                       bytes[i + k] = new MemoryByte(wordBytes[l], MEM_BYTE_FLAGS);
                        } else
                                for (int k = 0; k < cellWidthBytes; k++)
                                        bytes[i + k] = new MemoryByte((byte) 0, (byte) 0);