//===----------------------------------------------------------------------===//
#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
return true;
}
-/// NameNeedsQuoting - Return true if the identifier \arg Str needs quotes to be
+/// NameNeedsQuoting - Return true if the identifier \p Str needs quotes to be
/// syntactically correct.
static bool NameNeedsQuoting(StringRef Str) {
assert(!Str.empty() && "Cannot create an empty MCSymbol");
-
+
// If any of the characters in the string is an unacceptable character, force
// quotes.
for (unsigned i = 0, e = Str.size(); i != e; ++i)
return false;
}
-void MCSymbol::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
+const MCSymbol &MCSymbol::AliasedSymbol() const {
+ const MCSymbol *S = this;
+ while (S->isVariable()) {
+ const MCExpr *Value = S->getVariableValue();
+ if (Value->getKind() != MCExpr::SymbolRef)
+ return *S;
+ const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value);
+ S = &Ref->getSymbol();
+ }
+ return *S;
+}
+
+void MCSymbol::setVariableValue(const MCExpr *Value) {
+ assert(!IsUsed && "Cannot set a variable that has already been used.");
+ assert(Value && "Invalid variable value!");
+ this->Value = Value;
+
+ // Variables should always be marked as in the same "section" as the value.
+ const MCSection *Section = Value->FindAssociatedSection();
+ if (Section)
+ setSection(*Section);
+ else
+ setUndefined();
+}
+
+void MCSymbol::print(raw_ostream &OS) const {
// The name for this MCSymbol is required to be a valid target name. However,
// some targets support quoting names with funny characters. If the name
// contains a funny character, then print it quoted.
- if (!NameNeedsQuoting(getName())) {
- OS << getName();
+ StringRef Name = getName();
+ if (!NameNeedsQuoting(Name)) {
+ OS << Name;
return;
}
-
- OS << '"' << getName() << '"';
+
+ OS << '"';
+ for (unsigned I = 0, E = Name.size(); I != E; ++I) {
+ char C = Name[I];
+ if (C == '\n')
+ OS << "\\n";
+ else if (C == '"')
+ OS << "\\\"";
+ else
+ OS << C;
+ }
+ OS << '"';
}
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
void MCSymbol::dump() const {
- print(dbgs(), 0);
+ print(dbgs());
}
+#endif