#define LLVM_MC_MCDWARF_H
#include "llvm/ADT/StringRef.h"
-#include "llvm/MC/MCObjectWriter.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/Compiler.h"
#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/raw_ostream.h"
#include <vector>
namespace llvm {
class MCContext;
+ class MCObjectWriter;
class MCSection;
- class MCSectionData;
class MCStreamer;
class MCSymbol;
- class MCObjectStreamer;
- class raw_ostream;
+ class SourceMgr;
+ class SMLoc;
/// MCDwarfFile - Instances of this class represent the name of the dwarf
/// .file directive and its associated dwarf file number in the MC file,
MCDwarfFile(StringRef name, unsigned dirIndex)
: Name(name), DirIndex(dirIndex) {}
- MCDwarfFile(const MCDwarfFile&); // DO NOT IMPLEMENT
- void operator=(const MCDwarfFile&); // DO NOT IMPLEMENT
+ MCDwarfFile(const MCDwarfFile&) LLVM_DELETED_FUNCTION;
+ void operator=(const MCDwarfFile&) LLVM_DELETED_FUNCTION;
public:
/// getName - Get the base name of this MCDwarfFile.
StringRef getName() const { return Name; }
unsigned getDirIndex() const { return DirIndex; }
- /// print - Print the value to the stream \arg OS.
+ /// print - Print the value to the stream \p OS.
void print(raw_ostream &OS) const;
/// dump - Print the value to stderr.
class MCLineSection {
private:
- MCLineSection(const MCLineSection&); // DO NOT IMPLEMENT
- void operator=(const MCLineSection&); // DO NOT IMPLEMENT
+ MCLineSection(const MCLineSection&) LLVM_DELETED_FUNCTION;
+ void operator=(const MCLineSection&) LLVM_DELETED_FUNCTION;
public:
// Constructor to create an MCLineSection with an empty MCLineEntries
//
// This emits the Dwarf file and the line tables.
//
- static void Emit(MCStreamer *MCOS, const MCSection *DwarfLineSection,
- MCSectionData *DLS, int PointerSize,
- const MCSection *TextSection = NULL);
+ static const MCSymbol *Emit(MCStreamer *MCOS);
};
class MCDwarfLineAddr {
static void Emit(MCStreamer *MCOS,
int64_t LineDelta,uint64_t AddrDelta);
- /// Utility function to compute the size of the encoding.
- static uint64_t ComputeSize(int64_t LineDelta, uint64_t AddrDelta);
-
/// Utility function to write the encoding to an object writer.
static void Write(MCObjectWriter *OW,
int64_t LineDelta, uint64_t AddrDelta);
};
+
+ class MCGenDwarfInfo {
+ public:
+ //
+ // When generating dwarf for assembly source files this emits the Dwarf
+ // sections.
+ //
+ static void Emit(MCStreamer *MCOS, const MCSymbol *LineSectionSymbol);
+ };
+
+ // When generating dwarf for assembly source files this is the info that is
+ // needed to be gathered for each symbol that will have a dwarf label.
+ class MCGenDwarfLabelEntry {
+ private:
+ // Name of the symbol without a leading underbar, if any.
+ StringRef Name;
+ // The dwarf file number this symbol is in.
+ unsigned FileNumber;
+ // The line number this symbol is at.
+ unsigned LineNumber;
+ // The low_pc for the dwarf label is taken from this symbol.
+ MCSymbol *Label;
+
+ public:
+ MCGenDwarfLabelEntry(StringRef name, unsigned fileNumber,
+ unsigned lineNumber, MCSymbol *label) :
+ Name(name), FileNumber(fileNumber), LineNumber(lineNumber), Label(label){}
+
+ StringRef getName() const { return Name; }
+ unsigned getFileNumber() const { return FileNumber; }
+ unsigned getLineNumber() const { return LineNumber; }
+ MCSymbol *getLabel() const { return Label; }
+
+ // This is called when label is created when we are generating dwarf for
+ // assembly source files.
+ static void Make(MCSymbol *Symbol, MCStreamer *MCOS, SourceMgr &SrcMgr,
+ SMLoc &Loc);
+ };
+
+ class MCCFIInstruction {
+ public:
+ enum OpType { OpSameValue, OpRememberState, OpRestoreState, OpOffset,
+ OpDefCfaRegister, OpDefCfaOffset, OpDefCfa, OpRelOffset,
+ OpAdjustCfaOffset, OpEscape, OpRestore, OpUndefined,
+ OpRegister };
+ private:
+ OpType Operation;
+ MCSymbol *Label;
+ unsigned Register;
+ union {
+ int Offset;
+ unsigned Register2;
+ };
+ std::vector<char> Values;
+
+ MCCFIInstruction(OpType Op, MCSymbol *L, unsigned R, int O, StringRef V) :
+ Operation(Op), Label(L), Register(R), Offset(O),
+ Values(V.begin(), V.end()) {
+ assert(Op != OpRegister);
+ }
+
+ MCCFIInstruction(OpType Op, MCSymbol *L, unsigned R1, unsigned R2) :
+ Operation(Op), Label(L), Register(R1), Register2(R2) {
+ assert(Op == OpRegister);
+ }
+
+ public:
+ static MCCFIInstruction
+ createOffset(MCSymbol *L, unsigned Register, int Offset) {
+ return MCCFIInstruction(OpOffset, L, Register, Offset, "");
+ }
+
+ static MCCFIInstruction
+ createDefCfaRegister(MCSymbol *L, unsigned Register) {
+ return MCCFIInstruction(OpDefCfaRegister, L, Register, 0, "");
+ }
+
+ static MCCFIInstruction createDefCfaOffset(MCSymbol *L, int Offset) {
+ return MCCFIInstruction(OpDefCfaOffset, L, 0, -Offset, "");
+ }
+
+ static MCCFIInstruction
+ createDefCfa(MCSymbol *L, unsigned Register, int Offset) {
+ return MCCFIInstruction(OpDefCfa, L, Register, -Offset, "");
+ }
+
+ static MCCFIInstruction createUndefined(MCSymbol *L, unsigned Register) {
+ return MCCFIInstruction(OpUndefined, L, Register, 0, "");
+ }
+
+ static MCCFIInstruction createRestore(MCSymbol *L, unsigned Register) {
+ return MCCFIInstruction(OpRestore, L, Register, 0, "");
+ }
+
+ static MCCFIInstruction createSameValue(MCSymbol *L, unsigned Register) {
+ return MCCFIInstruction(OpSameValue, L, Register, 0, "");
+ }
+
+ static MCCFIInstruction createRestoreState(MCSymbol *L) {
+ return MCCFIInstruction(OpRestoreState, L, 0, 0, "");
+ }
+
+ static MCCFIInstruction createRememberState(MCSymbol *L) {
+ return MCCFIInstruction(OpRememberState, L, 0, 0, "");
+ }
+
+ static MCCFIInstruction
+ createRelOffset(MCSymbol *L, unsigned Register, int Offset) {
+ return MCCFIInstruction(OpRelOffset, L, Register, Offset, "");
+ }
+
+ static MCCFIInstruction
+ createAdjustCfaOffset(MCSymbol *L, int Adjustment) {
+ return MCCFIInstruction(OpAdjustCfaOffset, L, 0, Adjustment, "");
+ }
+
+ static MCCFIInstruction createEscape(MCSymbol *L, StringRef Vals) {
+ return MCCFIInstruction(OpEscape, L, 0, 0, Vals);
+ }
+
+ static MCCFIInstruction
+ createRegister(MCSymbol *L, unsigned Register1, unsigned Register2) {
+ return MCCFIInstruction(OpRegister, L, Register1, Register2);
+ }
+
+ OpType getOperation() const { return Operation; }
+ MCSymbol *getLabel() const { return Label; }
+
+ unsigned getRegister() const {
+ assert(Operation == OpDefCfa || Operation == OpOffset ||
+ Operation == OpRestore || Operation == OpUndefined ||
+ Operation == OpSameValue || Operation == OpDefCfaRegister ||
+ Operation == OpRelOffset || Operation == OpRegister);
+ return Register;
+ }
+
+ unsigned getRegister2() const {
+ assert(Operation == OpRegister);
+ return Register2;
+ }
+
+ int getOffset() const {
+ assert(Operation == OpDefCfa || Operation == OpOffset ||
+ Operation == OpRelOffset || Operation == OpDefCfaOffset ||
+ Operation == OpAdjustCfaOffset);
+ return Offset;
+ }
+
+ const StringRef getValues() const {
+ assert(Operation == OpEscape);
+ return StringRef(&Values[0], Values.size());
+ }
+ };
+
+ struct MCDwarfFrameInfo {
+ MCDwarfFrameInfo() : Begin(0), End(0), Personality(0), Lsda(0),
+ Function(0), Instructions(), PersonalityEncoding(),
+ LsdaEncoding(0), CompactUnwindEncoding(0),
+ IsSignalFrame(false) {}
+ MCSymbol *Begin;
+ MCSymbol *End;
+ const MCSymbol *Personality;
+ const MCSymbol *Lsda;
+ const MCSymbol *Function;
+ std::vector<MCCFIInstruction> Instructions;
+ unsigned PersonalityEncoding;
+ unsigned LsdaEncoding;
+ uint32_t CompactUnwindEncoding;
+ bool IsSignalFrame;
+ };
+
+ class MCDwarfFrameEmitter {
+ public:
+ //
+ // This emits the frame info section.
+ //
+ static void Emit(MCStreamer &streamer, bool usingCFI,
+ bool isEH);
+ static void EmitAdvanceLoc(MCStreamer &Streamer, uint64_t AddrDelta);
+ static void EncodeAdvanceLoc(uint64_t AddrDelta, raw_ostream &OS);
+ };
} // end namespace llvm
#endif
projects / oota-llvm.git / blobdiff