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author | Gabe Black <gblack@eecs.umich.edu> | 2009-07-29 00:17:11 -0700 |
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committer | Gabe Black <gblack@eecs.umich.edu> | 2009-07-29 00:17:11 -0700 |
commit | 1e04b6281d864c1b1cbf819cb17595d90d20adbe (patch) | |
tree | 85109ab7f617c6e057ee00a1ab4689f607930c6d /src/arch/arm/nativetrace.cc | |
parent | 2871a13ab31aaabea93f1d55595e199ea76e9dcf (diff) | |
download | gem5-1e04b6281d864c1b1cbf819cb17595d90d20adbe.tar.xz |
ARM: Make the ARM native tracer stop M5 if control diverges.
If the control flow of M5's executable and statetrace's target process get out
of sync even a little, there will be a LOT of output, very little of which
will be useful. There's also almost no hope for recovery. In those cases, we
might as well give up and not generate a huge, mostly worthless trace file.
Diffstat (limited to 'src/arch/arm/nativetrace.cc')
-rw-r--r-- | src/arch/arm/nativetrace.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/arch/arm/nativetrace.cc b/src/arch/arm/nativetrace.cc index 90c5e5c25..1ad9e1a19 100644 --- a/src/arch/arm/nativetrace.cc +++ b/src/arch/arm/nativetrace.cc @@ -162,6 +162,11 @@ Trace::ArmNativeTrace::check(NativeTraceRecord *record) } assert(inst); record->traceInst(inst, ran); + + bool pcError = (mState.newState[STATE_PC] != + nState.newState[STATE_PC]); + if (stopOnPCError && pcError) + panic("Native trace detected an error in control flow!"); } } |