Fix fault handling, dereferincing a null pointer is bad.

--HG--
extra : convert_revision : a4f658bfd39b7f1d219ad8929b8f45457f49299f

diff --git a/cpu/simple/cpu.cc b/cpu/simple/cpu.cc
index d826c589ec1bc79908df3233c661c99cb4db980c..ca5d546946aea757205f1cb35989cc9cd126e640 100644 (file)
--- a/cpu/simple/cpu.cc
+++ b/cpu/simple/cpu.cc
@@ -347,12 +347,12 @@ SimpleCPU::copySrcTranslate(Addr src)
     // translate to physical address
     Fault fault = xc->translateDataReadReq(memReq);
 
-    assert(!fault->isAlignmentFault());
-
     if (fault == NoFault) {
         xc->copySrcAddr = src;
         xc->copySrcPhysAddr = memReq->paddr + offset;
     } else {
+        assert(!fault->isAlignmentFault());
+
         xc->copySrcAddr = 0;
         xc->copySrcPhysAddr = 0;
     }
@@ -382,8 +382,6 @@ SimpleCPU::copy(Addr dest)
     // translate to physical address
     Fault fault = xc->translateDataWriteReq(memReq);
 
-    assert(!fault->isAlignmentFault());
-
     if (fault == NoFault) {
         Addr dest_addr = memReq->paddr + offset;
         // Need to read straight from memory since we have more than 8 bytes.
@@ -402,6 +400,9 @@ SimpleCPU::copy(Addr dest)
             dcacheInterface->access(memReq);
         }
     }
+    else
+        assert(!fault->isAlignmentFault());
+
     return fault;
 }