Further work on machine launch configs

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

diff --git a/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MainMemoryBlock.java b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MainMemoryBlock.java
new file mode 100644 (file)
index 0000000..b068fc0
--- /dev/null
+++ b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MainMemoryBlock.java
@@ -0,0 +1,98 @@
+package net.mograsim.plugin.launch;
+
+import org.eclipse.debug.core.DebugException;
+import org.eclipse.debug.core.ILaunch;
+import org.eclipse.debug.core.model.IDebugTarget;
+import org.eclipse.debug.core.model.IMemoryBlock;
+
+import net.mograsim.machine.MainMemory;
+import net.mograsim.plugin.MograsimActivator;
+
+public class MainMemoryBlock implements IMemoryBlock
+{
+       private final MachineDebugTarget debugTarget;
+       private final MainMemory mem;
+       private final long startAddress;
+       private final int length;
+
+       public MainMemoryBlock(MachineDebugTarget debugTarget, long startAddress, long length)
+       {
+               if (length < 0)
+                       throw new IllegalArgumentException("Can't create a memory block of negative size");
+               if (length > Integer.MAX_VALUE)
+                       throw new IllegalArgumentException("Can't create a memory block bigger than Integer.MAX_VALUE (" + Integer.MAX_VALUE + "\"");
+               if (startAddress % 2 != 0)
+                       throw new IllegalArgumentException("Can't create an unaligned memory block");
+
+               this.debugTarget = debugTarget;
+               this.mem = debugTarget.getMachine().getMainMemory();
+               this.startAddress = startAddress;
+               this.length = (int) length;
+       }
+
+       @Override
+       public String getModelIdentifier()
+       {
+               return MograsimActivator.PLUGIN_ID;
+       }
+
+       @Override
+       public IDebugTarget getDebugTarget()
+       {
+               return debugTarget;
+       }
+
+       @Override
+       public ILaunch getLaunch()
+       {
+               return debugTarget.getLaunch();
+       }
+
+       @Override
+       public <T> T getAdapter(Class<T> adapter)
+       {
+               // TODO
+               return null;
+       }
+
+       @Override
+       public long getStartAddress()
+       {
+               return startAddress;
+       }
+
+       @Override
+       public long getLength()
+       {
+               return length;
+       }
+
+       @Override
+       public byte[] getBytes() throws DebugException
+       {
+               // TODO speedup. Maybe make a method for this in MainMemory?
+               byte[] bs = new byte[length];
+               int i;
+               long j;
+               for (i = 0, j = startAddress / 2; i < length; i++)
+               {
+                       short word = mem.getCellAsBigInteger(j).shortValueExact();
+                       bs[i + 0] = (byte) (word & 0xFF);
+                       bs[i + 1] = (byte) (word >>> 8);
+               }
+               return bs;
+       }
+
+       @Override
+       public boolean supportsValueModification()
+       {
+               // TODO
+               return false;
+       }
+
+       @Override
+       public void setValue(long offset, byte[] bytes) throws DebugException
+       {
+               // TODO
+       }
+}
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