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Fix the amd64 cross-DAC stack unwinding #114836

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Merged
mikem8361 merged 6 commits into from
Apr 23, 2025
Merged

Fix the amd64 cross-DAC stack unwinding #114836

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c2638fc
Move m_Context to the end of SoftwareExceptionFrame to fix cross-DAC
Apr 19, 2025
ce3ac73
Add comments and fix FaultingExceptionFrame on amd64
Apr 21, 2025
376d5ac
Fix debug assert in DBI
Apr 22, 2025
58416d2
Back out FaultingExceptionFrame changes
Apr 21, 2025
eddff5a
Merge branch 'main' into fix_cross_dac
Apr 22, 2025
aa9ba7e
Merge branch 'main' into fix_cross_dac
Apr 23, 2025
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7 changes: 7 additions & 0 deletions src/coreclr/debug/ee/debugger.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2774,6 +2774,13 @@ DebuggerMethodInfo *Debugger::GetOrCreateMethodInfo(Module *pModule, mdMethodDef
}
CONTRACTL_END;

#ifdef DACCESS_COMPILE
if (!HasLazyData())
{
return NULL;
}
#endif // #ifdef DACCESS_COMPILE

DebuggerMethodInfo *info = NULL;

// When dump debugging, we don't expect to have a lock,
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4 changes: 3 additions & 1 deletion src/coreclr/vm/frames.h
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Expand Up @@ -1041,8 +1041,10 @@ typedef DPTR(class SoftwareExceptionFrame) PTR_SoftwareExceptionFrame;
class SoftwareExceptionFrame : public Frame
{
TADDR m_ReturnAddress;
T_CONTEXT m_Context;
T_KNONVOLATILE_CONTEXT_POINTERS m_ContextPointers;
// This T_CONTEXT field needs to be the last field in the class because it is a
// different size between Linux (pal.h) and the Windows cross-DAC (winnt.h).
T_CONTEXT m_Context;

public:
#ifndef DACCESS_COMPILE
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