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fix MCSymbol printing on darwin to exactly match the mangler (handling of \n and " in a symbol name).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81683 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-09-13 18:11:09 +00:00
parent e19f978323
commit 4afcedfad1
1 changed files with 28 additions and 8 deletions
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36
lib/MC/MCSymbol.cpp
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@ -65,6 +65,23 @@ static void PrintMangledName(raw_ostream &OS, StringRef Str) {
}
}
/// PrintMangledQuotedName - On systems that support quoted symbols, we still
/// have to escape some (obscure) characters like " and \n which would break the
/// assembler's lexing.
static void PrintMangledQuotedName(raw_ostream &OS, StringRef Str) {
OS << '"';
for (unsigned i = 0, e = Str.size(); i != e; ++i) {
if (Str[i] == '"')
OS << "_QQ_";
else if (Str[i] == '\n')
OS << "_NL_";
else
OS << Str[i];
}
OS << '"';
}
void MCSymbol::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
if (MAI == 0 || !NameNeedsEscaping(getName(), *MAI)) {
@ -72,14 +89,17 @@ void MCSymbol::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
return;
}
// On darwin and other systems that allow quoted names, just do that.
if (MAI->doesAllowQuotesInName()) {
OS << '"' << getName() << '"';
return;
}
// Otherwise, we have to mangle the name.
PrintMangledName(OS, getName());
// On systems that do not allow quoted names, print with mangling.
if (!MAI->doesAllowQuotesInName())
return PrintMangledName(OS, getName());
// If the string contains a double quote or newline, we still have to mangle
// it.
if (getName().find('"') != std::string::npos ||
getName().find('\n') != std::string::npos)
return PrintMangledQuotedName(OS, getName());
OS << '"' << getName() << '"';
}
void MCSymbol::dump() const {