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-rw-r--r--src/cpu/simple/base.cc6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/cpu/simple/base.cc b/src/cpu/simple/base.cc
index c9d4f4c8f..3d07961f1 100644
--- a/src/cpu/simple/base.cc
+++ b/src/cpu/simple/base.cc
@@ -335,7 +335,11 @@ BaseSimpleCPU::setupFetchRequest(Request *req)
thread->readNextPC());
#endif
- req->setVirt(0, thread->readPC() & ~3, sizeof(MachInst), 0,
+ // This will generate a mask which aligns the pc on MachInst size
+ // boundaries. It won't work for non-power-of-two sized MachInsts, but
+ // it will work better than a hard coded mask.
+ const Addr PCMask = ~(sizeof(MachInst) - 1);
+ req->setVirt(0, thread->readPC() & PCMask, sizeof(MachInst), 0,
thread->readPC());
Fault fault = thread->translateInstReq(req);