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Fix .eh table linkage issues on Darwin. Some EH support

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for Darwin PPC, but it's not fully working yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44258 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-11-20 23:24:42 +00:00
parent 99ba1f7b8d
commit 1d4ce2ab96
7 changed files with 44 additions and 13 deletions
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28
lib/CodeGen/DwarfWriter.cpp
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@ -2764,12 +2764,15 @@ private:
bool hasCalls;
bool hasLandingPads;
std::vector<MachineMove> Moves;
Function::LinkageTypes linkage;
FunctionEHFrameInfo(const std::string &FN, unsigned Num, unsigned P,
bool hC, bool hL,
const std::vector<MachineMove> &M):
const std::vector<MachineMove> &M,
Function::LinkageTypes l):
FnName(FN), Number(Num), PersonalityIndex(P),
hasCalls(hC), hasLandingPads(hL), Moves(M) { }
hasCalls(hC), hasLandingPads(hL), Moves(M),
linkage(l) { }
};
std::vector<FunctionEHFrameInfo> EHFrames;
@ -2867,15 +2870,25 @@ private:
Asm->SwitchToTextSection(TAI->getDwarfEHFrameSection());
// Externally visible entry into the functions eh frame info.
if (const char *GlobalDirective = TAI->getGlobalDirective())
O << GlobalDirective << EHFrameInfo.FnName << "\n";
// If the corresponding function is static, this should not be
// externally visible.
if (EHFrameInfo.linkage != Function::InternalLinkage) {
if (const char *GlobalEHDirective = TAI->getGlobalEHDirective())
O << GlobalEHDirective << EHFrameInfo.FnName << "\n";
}
// If there are no calls then you can't unwind.
if (!EHFrameInfo.hasCalls) {
O << EHFrameInfo.FnName << " = 0\n";
} else {
O << EHFrameInfo.FnName << ":\n";
// If corresponding function is weak definition, this should be too.
if ((EHFrameInfo.linkage == Function::WeakLinkage ||
EHFrameInfo.linkage == Function::LinkOnceLinkage) &&
TAI->getWeakDefDirective())
O << TAI->getWeakDefDirective() << EHFrameInfo.FnName << "\n";
// EH frame header.
EmitDifference("eh_frame_end", EHFrameInfo.Number,
"eh_frame_begin", EHFrameInfo.Number, true);
@ -3362,7 +3375,8 @@ public:
MMI->getPersonalityIndex(),
MF->getFrameInfo()->hasCalls(),
!MMI->getLandingPads().empty(),
MMI->getFrameMoves()));
MMI->getFrameMoves(),
MF->getFunction()->getLinkage()));
}
};