#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Target/TargetAsmBackend.h"
+#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
+#include <cctype>
using namespace llvm;
namespace {
const MCAsmInfo &MAI;
OwningPtr<MCInstPrinter> InstPrinter;
OwningPtr<MCCodeEmitter> Emitter;
+ OwningPtr<TargetAsmBackend> AsmBackend;
SmallString<128> CommentToEmit;
raw_svector_ostream CommentStream;
- const TargetLoweringObjectFile *TLOF;
- int PointerSize;
-
- unsigned IsLittleEndian : 1;
unsigned IsVerboseAsm : 1;
unsigned ShowInst : 1;
+ unsigned UseLoc : 1;
+
+ bool needsSet(const MCExpr *Value);
public:
MCAsmStreamer(MCContext &Context, formatted_raw_ostream &os,
- bool isLittleEndian, bool isVerboseAsm,
- const TargetLoweringObjectFile *tlof, int pointerSize,
- MCInstPrinter *printer, MCCodeEmitter *emitter, bool showInst)
+ bool isVerboseAsm,
+ bool useLoc,
+ MCInstPrinter *printer, MCCodeEmitter *emitter,
+ TargetAsmBackend *asmbackend,
+ bool showInst)
: MCStreamer(Context), OS(os), MAI(Context.getAsmInfo()),
- InstPrinter(printer), Emitter(emitter), CommentStream(CommentToEmit),
- TLOF(tlof), PointerSize(pointerSize),
- IsLittleEndian(isLittleEndian), IsVerboseAsm(isVerboseAsm),
- ShowInst(showInst) {
+ InstPrinter(printer), Emitter(emitter), AsmBackend(asmbackend),
+ CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
+ ShowInst(showInst), UseLoc(useLoc) {
if (InstPrinter && IsVerboseAsm)
InstPrinter->setCommentStream(CommentStream);
}
~MCAsmStreamer() {}
- bool isLittleEndian() const { return IsLittleEndian; }
-
inline void EmitEOL() {
// If we don't have any comments, just emit a \n.
if (!IsVerboseAsm) {
virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol);
+ virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+ const MCSymbol *LastLabel,
+ const MCSymbol *Label);
virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
- virtual void EmitValue(const MCExpr *Value, unsigned Size,unsigned AddrSpace);
-
- virtual void EmitIntValue(uint64_t Value, unsigned Size, unsigned AddrSpace);
+ virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ bool isPCRel, unsigned AddrSpace);
+ virtual void EmitIntValue(uint64_t Value, unsigned Size,
+ unsigned AddrSpace = 0);
virtual void EmitULEB128Value(const MCExpr *Value, unsigned AddrSpace = 0);
unsigned Column, unsigned Flags,
unsigned Isa, unsigned Discriminator);
+ virtual bool EmitCFIStartProc();
+ virtual bool EmitCFIEndProc();
+ virtual bool EmitCFIDefCfaOffset(int64_t Offset);
+ virtual bool EmitCFIDefCfaRegister(int64_t Register);
+ virtual bool EmitCFIOffset(int64_t Register, int64_t Offset);
+ virtual bool EmitCFIPersonality(const MCSymbol *Sym);
+ virtual bool EmitCFILsda(const MCSymbol *Sym);
+
virtual void EmitInstruction(const MCInst &Inst);
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
EmitEOL();
}
+void MCAsmStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
+ const MCSymbol *LastLabel,
+ const MCSymbol *Label) {
+ EmitDwarfSetLineAddr(LineDelta, Label,
+ getContext().getTargetAsmInfo().getPointerSize());
+}
+
void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
switch (Attribute) {
case MCSA_LazyReference: OS << "\t.lazy_reference\t"; break;
case MCSA_Local: OS << "\t.local\t"; break;
case MCSA_NoDeadStrip: OS << "\t.no_dead_strip\t"; break;
+ case MCSA_SymbolResolver: OS << "\t.symbol_resolver\t"; break;
case MCSA_PrivateExtern: OS << "\t.private_extern\t"; break;
case MCSA_Protected: OS << "\t.protected\t"; break;
case MCSA_Reference: OS << "\t.reference\t"; break;
EmitEOL();
}
-/// EmitIntValue - Special case of EmitValue that avoids the client having
-/// to pass in a MCExpr for constant integers.
void MCAsmStreamer::EmitIntValue(uint64_t Value, unsigned Size,
unsigned AddrSpace) {
+ EmitValue(MCConstantExpr::Create(Value, getContext()), Size, AddrSpace);
+}
+
+void MCAsmStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+ bool isPCRel, unsigned AddrSpace) {
assert(CurSection && "Cannot emit contents before setting section!");
+ assert(!isPCRel && "Cannot emit pc relative relocations!");
const char *Directive = 0;
switch (Size) {
default: break;
Directive = MAI.getData64bitsDirective(AddrSpace);
// If the target doesn't support 64-bit data, emit as two 32-bit halves.
if (Directive) break;
- if (isLittleEndian()) {
- EmitIntValue((uint32_t)(Value >> 0 ), 4, AddrSpace);
- EmitIntValue((uint32_t)(Value >> 32), 4, AddrSpace);
+ int64_t IntValue;
+ if (!Value->EvaluateAsAbsolute(IntValue))
+ report_fatal_error("Don't know how to emit this value.");
+ if (getContext().getTargetAsmInfo().isLittleEndian()) {
+ EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
} else {
- EmitIntValue((uint32_t)(Value >> 32), 4, AddrSpace);
- EmitIntValue((uint32_t)(Value >> 0 ), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
+ EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
}
return;
}
- assert(Directive && "Invalid size for machine code value!");
- OS << Directive << truncateToSize(Value, Size);
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitValue(const MCExpr *Value, unsigned Size,
- unsigned AddrSpace) {
- assert(CurSection && "Cannot emit contents before setting section!");
- const char *Directive = 0;
- switch (Size) {
- default: break;
- case 1: Directive = MAI.getData8bitsDirective(AddrSpace); break;
- case 2: Directive = MAI.getData16bitsDirective(AddrSpace); break;
- case 4: Directive = MAI.getData32bitsDirective(AddrSpace); break;
- case 8: Directive = MAI.getData64bitsDirective(AddrSpace); break;
- }
-
assert(Directive && "Invalid size for machine code value!");
OS << Directive << *Value;
EmitEOL();
}
void MCAsmStreamer::EmitULEB128Value(const MCExpr *Value, unsigned AddrSpace) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitULEB128IntValue(IntValue, AddrSpace);
+ return;
+ }
assert(MAI.hasLEB128() && "Cannot print a .uleb");
OS << ".uleb128 " << *Value;
EmitEOL();
}
void MCAsmStreamer::EmitSLEB128Value(const MCExpr *Value, unsigned AddrSpace) {
+ int64_t IntValue;
+ if (Value->EvaluateAsAbsolute(IntValue)) {
+ EmitSLEB128IntValue(IntValue, AddrSpace);
+ return;
+ }
assert(MAI.hasLEB128() && "Cannot print a .sleb");
OS << ".sleb128 " << *Value;
EmitEOL();
}
bool MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Filename){
- if (!TLOF) {
+ if (UseLoc) {
OS << "\t.file\t" << FileNo << ' ';
PrintQuotedString(Filename, OS);
EmitEOL();
unsigned Discriminator) {
this->MCStreamer::EmitDwarfLocDirective(FileNo, Line, Column, Flags,
Isa, Discriminator);
- if (TLOF)
+ if (!UseLoc)
return;
OS << "\t.loc\t" << FileNo << " " << Line << " " << Column;
EmitEOL();
}
+bool MCAsmStreamer::EmitCFIStartProc() {
+ if (this->MCStreamer::EmitCFIStartProc())
+ return true;
+
+ OS << ".cfi_startproc";
+ EmitEOL();
+
+ return false;
+}
+
+bool MCAsmStreamer::EmitCFIEndProc() {
+ if (this->MCStreamer::EmitCFIEndProc())
+ return true;
+
+ OS << ".cfi_endproc";
+ EmitEOL();
+
+ return false;
+}
+
+bool MCAsmStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
+ if (this->MCStreamer::EmitCFIDefCfaOffset(Offset))
+ return true;
+
+ OS << ".cfi_def_cfa_offset " << Offset;
+ EmitEOL();
+
+ return false;
+}
+
+bool MCAsmStreamer::EmitCFIDefCfaRegister(int64_t Register) {
+ if (this->MCStreamer::EmitCFIDefCfaRegister(Register))
+ return true;
+
+ OS << ".cfi_def_cfa_register " << Register;
+ EmitEOL();
+
+ return false;
+}
+
+bool MCAsmStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
+ if (this->MCStreamer::EmitCFIOffset(Register, Offset))
+ return true;
+
+ OS << ".cfi_offset " << Register << ", " << Offset;
+ EmitEOL();
+
+ return false;
+}
+
+bool MCAsmStreamer::EmitCFIPersonality(const MCSymbol *Sym) {
+ if (this->MCStreamer::EmitCFIPersonality(Sym))
+ return true;
+
+ OS << ".cfi_personality 0, " << *Sym;
+ EmitEOL();
+
+ return false;
+}
+
+bool MCAsmStreamer::EmitCFILsda(const MCSymbol *Sym) {
+ if (this->MCStreamer::EmitCFILsda(Sym))
+ return true;
+
+ OS << ".cfi_lsda 0, " << *Sym;
+ EmitEOL();
+
+ return false;
+}
+
void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
raw_ostream &OS = GetCommentOS();
SmallString<256> Code;
for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
MCFixup &F = Fixups[i];
- const MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind());
+ const MCFixupKindInfo &Info = AsmBackend->getFixupKindInfo(F.getKind());
for (unsigned j = 0; j != Info.TargetSize; ++j) {
unsigned Index = F.getOffset() * 8 + Info.TargetOffset + j;
assert(Index < Code.size() * 8 && "Invalid offset in fixup!");
unsigned Bit = (Code[i] >> j) & 1;
unsigned FixupBit;
- if (IsLittleEndian)
+ if (getContext().getTargetAsmInfo().isLittleEndian())
FixupBit = i * 8 + j;
else
FixupBit = i * 8 + (7-j);
for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
MCFixup &F = Fixups[i];
- const MCFixupKindInfo &Info = Emitter->getFixupKindInfo(F.getKind());
+ const MCFixupKindInfo &Info = AsmBackend->getFixupKindInfo(F.getKind());
OS << " fixup " << char('A' + i) << " - " << "offset: " << F.getOffset()
<< ", value: " << *F.getValue() << ", kind: " << Info.Name << "\n";
}
void MCAsmStreamer::EmitInstruction(const MCInst &Inst) {
assert(CurSection && "Cannot emit contents before setting section!");
- if (TLOF)
+ if (!UseLoc)
MCLineEntry::Make(this, getCurrentSection());
// Show the encoding in a comment if we have a code emitter.
void MCAsmStreamer::Finish() {
// Dump out the dwarf file & directory tables and line tables.
- if (getContext().hasDwarfFiles() && TLOF) {
- MCDwarfFileTable::Emit(this, TLOF->getDwarfLineSection(), NULL,
- PointerSize);
- }
+ if (getContext().hasDwarfFiles() && !UseLoc)
+ MCDwarfFileTable::Emit(this);
}
MCStreamer *llvm::createAsmStreamer(MCContext &Context,
formatted_raw_ostream &OS,
- bool isLittleEndian,
- bool isVerboseAsm, MCInstPrinter *IP,
- MCCodeEmitter *CE, bool ShowInst) {
- return new MCAsmStreamer(Context, OS, isLittleEndian, isVerboseAsm,
- NULL, 0, IP, CE, ShowInst);
-}
-
-
-MCStreamer *llvm::createAsmStreamerNoLoc(MCContext &Context,
- formatted_raw_ostream &OS,
- bool isLittleEndian,
- bool isVerboseAsm,
- const TargetLoweringObjectFile *TLOF,
- int PointerSize,
- MCInstPrinter *IP,
- MCCodeEmitter *CE, bool ShowInst) {
- return new MCAsmStreamer(Context, OS, isLittleEndian, isVerboseAsm,
- TLOF, PointerSize, IP, CE, ShowInst);
+ bool isVerboseAsm, bool useLoc,
+ MCInstPrinter *IP, MCCodeEmitter *CE,
+ TargetAsmBackend *TAB, bool ShowInst) {
+ return new MCAsmStreamer(Context, OS, isVerboseAsm, useLoc,
+ IP, CE, TAB, ShowInst);
}
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