MCCodeEmitter *Emitter;
SmallString<128> CommentToEmit;
+ raw_svector_ostream CommentStream;
public:
MCAsmStreamer(MCContext &Context, formatted_raw_ostream &os,
const MCAsmInfo &mai,
bool isLittleEndian, bool isVerboseAsm, MCInstPrinter *printer,
MCCodeEmitter *emitter)
: MCStreamer(Context), OS(os), MAI(mai), IsLittleEndian(isLittleEndian),
- IsVerboseAsm(isVerboseAsm), InstPrinter(printer), Emitter(emitter) {}
+ IsVerboseAsm(isVerboseAsm), InstPrinter(printer), Emitter(emitter),
+ CommentStream(CommentToEmit) {}
~MCAsmStreamer() {}
bool isLittleEndian() const { return IsLittleEndian; }
inline void EmitEOL() {
- if (CommentToEmit.empty()) {
+ // If we don't have any comments, just emit a \n.
+ if (!IsVerboseAsm) {
OS << '\n';
return;
}
/// verbose assembly output is enabled.
virtual void AddComment(const Twine &T);
+ /// GetCommentOS - Return a raw_ostream that comments can be written to.
+ /// Unlike AddComment, you are required to terminate comments with \n if you
+ /// use this method.
+ virtual raw_ostream &GetCommentOS() {
+ if (!IsVerboseAsm)
+ return nulls(); // Discard comments unless in verbose asm mode.
+ return CommentStream;
+ }
+
+ /// AddBlankLine - Emit a blank line to a .s file to pretty it up.
+ virtual void AddBlankLine() {
+ EmitEOL();
+ }
+
/// @name MCStreamer Interface
/// @{
virtual void EmitLabel(MCSymbol *Symbol);
- virtual void EmitAssemblerFlag(AssemblerFlag Flag);
+ virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
- virtual void EmitSymbolAttribute(MCSymbol *Symbol, SymbolAttr Attribute);
+ virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
- virtual void EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
+ virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment);
+ /// EmitLocalCommonSymbol - Emit a local common (.lcomm) symbol.
+ ///
+ /// @param Symbol - The common symbol to emit.
+ /// @param Size - The size of the common symbol.
+ virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size);
+
virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
unsigned Size = 0, unsigned ByteAlignment = 0);
/// verbose assembly output is enabled.
void MCAsmStreamer::AddComment(const Twine &T) {
if (!IsVerboseAsm) return;
- // Each comment goes on its own line.
- if (!CommentToEmit.empty())
- CommentToEmit.push_back('\n');
+
+ // Make sure that CommentStream is flushed.
+ CommentStream.flush();
+
T.toVector(CommentToEmit);
+ // Each comment goes on its own line.
+ CommentToEmit.push_back('\n');
+
+ // Tell the comment stream that the vector changed underneath it.
+ CommentStream.resync();
}
void MCAsmStreamer::EmitCommentsAndEOL() {
+ if (CommentToEmit.empty() && CommentStream.GetNumBytesInBuffer() == 0) {
+ OS << '\n';
+ return;
+ }
+
+ CommentStream.flush();
StringRef Comments = CommentToEmit.str();
- while (!Comments.empty()) {
+
+ assert(Comments.back() == '\n' &&
+ "Comment array not newline terminated");
+ do {
// Emit a line of comments.
OS.PadToColumn(MAI.getCommentColumn());
size_t Position = Comments.find('\n');
OS << MAI.getCommentString() << ' ' << Comments.substr(0, Position) << '\n';
- if (Position == StringRef::npos) break;
Comments = Comments.substr(Position+1);
- }
+ } while (!Comments.empty());
CommentToEmit.clear();
+ // Tell the comment stream that the vector changed underneath it.
+ CommentStream.resync();
}
Symbol->setSection(*CurSection);
}
-void MCAsmStreamer::EmitAssemblerFlag(AssemblerFlag Flag) {
+void MCAsmStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
switch (Flag) {
default: assert(0 && "Invalid flag!");
- case SubsectionsViaSymbols: OS << ".subsections_via_symbols"; break;
+ case MCAF_SubsectionsViaSymbols: OS << ".subsections_via_symbols"; break;
}
EmitEOL();
}
}
void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
- SymbolAttr Attribute) {
+ MCSymbolAttr Attribute) {
switch (Attribute) {
- case Global: OS << MAI.getGlobalDirective(); break; // .globl
- case Hidden: OS << ".hidden "; break;
- case IndirectSymbol: OS << ".indirect_symbol "; break;
- case Internal: OS << ".internal "; break;
- case LazyReference: OS << ".lazy_reference "; break;
- case NoDeadStrip: OS << ".no_dead_strip "; break;
- case PrivateExtern: OS << ".private_extern "; break;
- case Protected: OS << ".protected "; break;
- case Reference: OS << ".reference "; break;
- case Weak: OS << ".weak "; break;
- case WeakDefinition: OS << ".weak_definition "; break;
- case WeakReference: OS << ".weak_reference "; break;
+ case MCSA_Invalid: assert(0 && "Invalid symbol attribute");
+ case MCSA_Global: OS << MAI.getGlobalDirective(); break; // .globl
+ case MCSA_Hidden: OS << ".hidden "; break;
+ case MCSA_IndirectSymbol: OS << ".indirect_symbol "; break;
+ case MCSA_Internal: OS << ".internal "; break;
+ case MCSA_LazyReference: OS << ".lazy_reference "; break;
+ case MCSA_Local: OS << ".local "; break;
+ case MCSA_NoDeadStrip: OS << ".no_dead_strip "; break;
+ case MCSA_PrivateExtern: OS << ".private_extern "; break;
+ case MCSA_Protected: OS << ".protected "; break;
+ case MCSA_Reference: OS << ".reference "; break;
+ case MCSA_Weak: OS << ".weak "; break;
+ case MCSA_WeakDefinition: OS << ".weak_definition "; break;
+ // .weak_reference
+ case MCSA_WeakReference: OS << MAI.getWeakRefDirective(); break;
}
OS << *Symbol;
EmitEOL();
}
-void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
+void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
- OS << MAI.getCOMMDirective() << *Symbol << ',' << Size;
+ OS << "\t.comm\t" << *Symbol << ',' << Size;
if (ByteAlignment != 0 && MAI.getCOMMDirectiveTakesAlignment()) {
if (MAI.getAlignmentIsInBytes())
OS << ',' << ByteAlignment;
EmitEOL();
}
+/// EmitLocalCommonSymbol - Emit a local common (.lcomm) symbol.
+///
+/// @param Symbol - The common symbol to emit.
+/// @param Size - The size of the common symbol.
+void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
+ assert(MAI.hasLCOMMDirective() && "Doesn't have .lcomm, can't emit it!");
+ OS << "\t.lcomm\t" << *Symbol << ',' << Size;
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
unsigned Size, unsigned ByteAlignment) {
// Note: a .zerofill directive does not switch sections.
EmitEOL();
}
+static inline char toOctal(int X) { return (X&7)+'0'; }
+
void MCAsmStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) {
assert(CurSection && "Cannot emit contents before setting section!");
- const char *Directive = MAI.getData8bitsDirective(AddrSpace);
- for (unsigned i = 0, e = Data.size(); i != e; ++i) {
- OS << Directive << (unsigned)(unsigned char)Data[i];
+ if (Data.empty()) return;
+
+ if (Data.size() == 1) {
+ OS << MAI.getData8bitsDirective(AddrSpace);
+ OS << (unsigned)(unsigned char)Data[0];
EmitEOL();
+ return;
+ }
+
+ // If the data ends with 0 and the target supports .asciz, use it, otherwise
+ // use .ascii
+ if (MAI.getAscizDirective() && Data.back() == 0) {
+ OS << MAI.getAscizDirective();
+ Data = Data.substr(0, Data.size()-1);
+ } else {
+ OS << MAI.getAsciiDirective();
}
+
+ OS << " \"";
+ for (unsigned i = 0, e = Data.size(); i != e; ++i) {
+ unsigned char C = Data[i];
+ if (C == '"' || C == '\\') {
+ OS << '\\' << (char)C;
+ continue;
+ }
+
+ if (isprint((unsigned char)C)) {
+ OS << (char)C;
+ continue;
+ }
+
+ switch (C) {
+ case '\b': OS << "\\b"; break;
+ case '\f': OS << "\\f"; break;
+ case '\n': OS << "\\n"; break;
+ case '\r': OS << "\\r"; break;
+ case '\t': OS << "\\t"; break;
+ default:
+ OS << '\\';
+ OS << toOctal(C >> 6);
+ OS << toOctal(C >> 3);
+ OS << toOctal(C >> 0);
+ break;
+ }
+ }
+ OS << '"';
+ EmitEOL();
}
/// EmitIntValue - Special case of EmitValue that avoids the client having
projects / oota-llvm.git / blobdiff