Change assert to check on virtual addresses because the physical

address can be zero for a copy

--HG--
extra : convert_revision : c6089969396aee2d67fa695a31cb7c5aea794338

cpu/simple_cpu/simple_cpu.cc

@@ -352,7 +352,7 @@ SimpleCPU::copy(Addr dest)
 {
     int blk_size = (dcacheInterface) ? dcacheInterface->getBlockSize() : 64;
     uint8_t data[blk_size];
-    assert(xc->copySrcPhysAddr);
+    assert(xc->copySrcAddr);
     memReq->reset(dest, blk_size);
     // translate to physical address
     Fault fault = xc->translateDataWriteReq(memReq);