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Provide hook for _alloca to make JITing on Cygwin slightly happier :)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44528 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2007-12-03 05:30:41 +00:00
parent 64270d5d46
commit 96ea209b52
1 changed files with 11 additions and 3 deletions
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14
lib/System/DynamicLibrary.cpp
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@ -138,14 +138,15 @@ void* DynamicLibrary::SearchForAddressOfSymbol(const char* symbolName) {
return ptr;
}
#define EXPLICIT_SYMBOL(SYM) \
extern void *SYM; if (!strcmp(symbolName, #SYM)) return &SYM
// If this is darwin, it has some funky issues, try to solve them here. Some
// important symbols are marked 'private external' which doesn't allow
// SearchForAddressOfSymbol to find them. As such, we special case them here,
// there is only a small handful of them.
#ifdef __APPLE__
#define EXPLICIT_SYMBOL(SYM) \
extern void *SYM; if (!strcmp(symbolName, #SYM)) return &SYM
{
EXPLICIT_SYMBOL(__ashldi3);
EXPLICIT_SYMBOL(__ashrdi3);
@ -163,9 +164,16 @@ void* DynamicLibrary::SearchForAddressOfSymbol(const char* symbolName) {
EXPLICIT_SYMBOL(__udivdi3);
EXPLICIT_SYMBOL(__umoddi3);
}
#undef EXPLICIT_SYMBOL
#endif
#ifdef __CYGWIN__
{
EXPLICIT_SYMBOL(_alloca);
}
#endif
#undef EXPLICIT_SYMBOL
// This macro returns the address of a well-known, explicit symbol
#define EXPLICIT_SYMBOL(SYM) \
if (!strcmp(symbolName, #SYM)) return &SYM