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[RuntimeDyld] Skip relocations for external symbols with 64-bit address ~0ULL.

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Requested by Eugene Rozenfeld of the LLILC team, this feature allows JIT
clients to skip relocations for selected external symbols by returning ~0ULL
from their symbol resolver. If this value is returned for a given symbol,
RuntimeDyld will skip all relocations for that symbol. The client will be
responsible for applying the skipped relocations manually before the code
is executed.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241383 91177308-0d34-0410-b5e6-96231b3b80d8
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Lang Hames
2015-07-04 01:35:26 +00:00
parent 9a9ee6f550
commit b21c7647d8
4 changed files with 84 additions and 21 deletions
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4
lib/ExecutionEngine/RuntimeDyld/RuntimeDyldChecker.cpp
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@@ -727,7 +727,9 @@ bool RuntimeDyldCheckerImpl::checkAllRulesInBuffer(StringRef RulePrefix,
}
bool RuntimeDyldCheckerImpl::isSymbolValid(StringRef Symbol) const {
return getRTDyld().getSymbolLocalAddress(Symbol) != nullptr;
if (getRTDyld().getSymbolLocalAddress(Symbol))
return true;
return !!getRTDyld().Resolver.findSymbol(Symbol);
}
uint64_t RuntimeDyldCheckerImpl::getSymbolLocalAddr(StringRef Symbol) const {