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Handle weak_extern in the JIT. This fixes

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SingleSource/UnitTests/2007-04-25-weak.c in JIT mode. The test
now passes on systems which are able to produce a correct
reference output to compare with.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61674 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-01-05 05:32:42 +00:00
parent 1c7a81b0c5
commit 69f9378675
4 changed files with 28 additions and 13 deletions
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15
lib/ExecutionEngine/JIT/Intercept.cpp
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@@ -90,7 +90,8 @@ static int jit_atexit(void (*Fn)(void)) {
/// function by using the dynamic loader interface. As such it is only useful
/// for resolving library symbols, not code generated symbols.
///
void *JIT::getPointerToNamedFunction(const std::string &Name) {
void *JIT::getPointerToNamedFunction(const std::string &Name,
bool AbortOnFailure) {
if (!isSymbolSearchingDisabled()) {
// Check to see if this is one of the functions we want to intercept. Note,
// we cast to intptr_t here to silence a -pedantic warning that complains
@@ -122,9 +123,9 @@ void *JIT::getPointerToNamedFunction(const std::string &Name) {
// First try turning $LDBLStub into $LDBL128. If that fails, strip it off.
// This mirrors logic in libSystemStubs.a.
std::string Prefix = std::string(Name.begin(), Name.end()-9);
if (void *Ptr = getPointerToNamedFunction(Prefix+"$LDBL128"))
if (void *Ptr = getPointerToNamedFunction(Prefix+"$LDBL128"), false)
return Ptr;
if (void *Ptr = getPointerToNamedFunction(Prefix))
if (void *Ptr = getPointerToNamedFunction(Prefix), false)
return Ptr;
}
#endif
@@ -135,8 +136,10 @@ void *JIT::getPointerToNamedFunction(const std::string &Name) {
if (void *RP = LazyFunctionCreator(Name))
return RP;
cerr << "ERROR: Program used external function '" << Name
<< "' which could not be resolved!\n";
abort();
if (AbortOnFailure) {
cerr << "ERROR: Program used external function '" << Name
<< "' which could not be resolved!\n";
abort();
}
return 0;
}