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Fixed version of 121434 with no new memory leaks.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121471 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2010-12-10 07:39:47 +00:00
parent c2ef828616
commit 89b9372605
33 changed files with 554 additions and 176 deletions
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63
lib/MC/MCAsmStreamer.cpp
View File

@@ -24,6 +24,7 @@
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetAsmInfo.h"
using namespace llvm;
namespace {
@@ -37,32 +38,26 @@ class MCAsmStreamer : public MCStreamer {
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,
bool isVerboseAsm,
bool useLoc,
MCInstPrinter *printer, MCCodeEmitter *emitter, 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) {
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) {
@@ -152,7 +147,8 @@ public:
virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
virtual void EmitValue(const MCExpr *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);
@@ -307,7 +303,8 @@ void MCAsmStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {
void MCAsmStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
const MCSymbol *LastLabel,
const MCSymbol *Label) {
EmitDwarfSetLineAddr(LineDelta, Label, PointerSize);
EmitDwarfSetLineAddr(LineDelta, Label,
getContext().getTargetAsmInfo().getPointerSize());
}
void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
@@ -512,9 +509,10 @@ void MCAsmStreamer::EmitIntValue(uint64_t Value, unsigned Size,
EmitValue(MCConstantExpr::Create(Value, getContext()), Size, AddrSpace);
}
void MCAsmStreamer::EmitValue(const MCExpr *Value, unsigned Size,
unsigned 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;
@@ -528,7 +526,7 @@ void MCAsmStreamer::EmitValue(const MCExpr *Value, unsigned Size,
int64_t IntValue;
if (!Value->EvaluateAsAbsolute(IntValue))
report_fatal_error("Don't know how to emit this value.");
if (isLittleEndian()) {
if (getContext().getTargetAsmInfo().isLittleEndian()) {
EmitIntValue((uint32_t)(IntValue >> 0 ), 4, AddrSpace);
EmitIntValue((uint32_t)(IntValue >> 32), 4, AddrSpace);
} else {
@@ -662,7 +660,7 @@ void MCAsmStreamer::EmitFileDirective(StringRef Filename) {
}
bool MCAsmStreamer::EmitDwarfFileDirective(unsigned FileNo, StringRef Filename){
if (!TLOF) {
if (UseLoc) {
OS << "\t.file\t" << FileNo << ' ';
PrintQuotedString(Filename, OS);
EmitEOL();
@@ -676,7 +674,7 @@ void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Discriminator) {
this->MCStreamer::EmitDwarfLocDirective(FileNo, Line, Column, Flags,
Isa, Discriminator);
if (TLOF)
if (!UseLoc)
return;
OS << "\t.loc\t" << FileNo << " " << Line << " " << Column;
@@ -829,7 +827,7 @@ void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
unsigned Bit = (Code[i] >> j) & 1;
unsigned FixupBit;
if (IsLittleEndian)
if (getContext().getTargetAsmInfo().isLittleEndian())
FixupBit = i * 8 + j;
else
FixupBit = i * 8 + (7-j);
@@ -855,7 +853,7 @@ void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
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.
@@ -888,28 +886,15 @@ void MCAsmStreamer::EmitRawText(StringRef String) {
void MCAsmStreamer::Finish() {
// Dump out the dwarf file & directory tables and line tables.
if (getContext().hasDwarfFiles() && TLOF)
MCDwarfFileTable::Emit(this, TLOF->getDwarfLineSection());
if (getContext().hasDwarfFiles() && !UseLoc)
MCDwarfFileTable::Emit(this);
}
MCStreamer *llvm::createAsmStreamer(MCContext &Context,
formatted_raw_ostream &OS,
bool isLittleEndian,
bool isVerboseAsm, MCInstPrinter *IP,
bool isVerboseAsm, bool useLoc,
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);
return new MCAsmStreamer(Context, OS, isVerboseAsm, useLoc,
IP, CE, ShowInst);
}

8
lib/MC/MCContext.cpp
View File

@@ -15,6 +15,7 @@
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCLabel.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h"
using namespace llvm;
@@ -24,8 +25,9 @@ typedef StringMap<const MCSectionELF*> ELFUniqueMapTy;
typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy;
MCContext::MCContext(const MCAsmInfo &mai) : MAI(mai), NextUniqueID(0),
CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0) {
MCContext::MCContext(const MCAsmInfo &mai, const TargetAsmInfo *tai) :
MAI(mai), TAI(tai), NextUniqueID(0),
CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0) {
MachOUniquingMap = 0;
ELFUniquingMap = 0;
COFFUniquingMap = 0;
@@ -48,6 +50,8 @@ MCContext::~MCContext() {
// If the stream for the .secure_log_unique directive was created free it.
delete (raw_ostream*)SecureLog;
delete TAI;
}
//===----------------------------------------------------------------------===//

2
lib/MC/MCDisassembler/EDDisassembler.cpp
View File

@@ -354,7 +354,7 @@ int EDDisassembler::parseInst(SmallVectorImpl<MCParsedAsmOperand*> &operands,
SourceMgr sourceMgr;
sourceMgr.AddNewSourceBuffer(buf, SMLoc()); // ownership of buf handed over
MCContext context(*AsmInfo);
MCContext context(*AsmInfo, NULL);
OwningPtr<MCStreamer> streamer(createNullStreamer(context));
OwningPtr<MCAsmParser> genericParser(createMCAsmParser(*Tgt, sourceMgr,
context, *streamer,

210
lib/MC/MCDwarf.cpp
View File

@@ -19,6 +19,7 @@
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetAsmBackend.h"
#include "llvm/Target/TargetAsmInfo.h"
using namespace llvm;
// Given a special op, return the address skip amount (in units of
@@ -125,8 +126,7 @@ static inline const MCExpr *MakeStartMinusEndExpr(const MCStreamer &MCOS,
//
static inline void EmitDwarfLineTable(MCStreamer *MCOS,
const MCSection *Section,
const MCLineSection *LineSection,
const MCSection *DwarfLineSection) {
const MCLineSection *LineSection) {
unsigned FileNum = 1;
unsigned LastLine = 1;
unsigned Column = 0;
@@ -185,13 +185,15 @@ static inline void EmitDwarfLineTable(MCStreamer *MCOS,
// Switch to the section to be able to create a symbol at its end.
MCOS->SwitchSection(Section);
MCContext &context = MCOS->getContext();
// Create a symbol at the end of the section.
MCSymbol *SectionEnd = MCOS->getContext().CreateTempSymbol();
MCSymbol *SectionEnd = context.CreateTempSymbol();
// Set the value of the symbol, as we are at the end of the section.
MCOS->EmitLabel(SectionEnd);
// Switch back the the dwarf line section.
MCOS->SwitchSection(DwarfLineSection);
MCOS->SwitchSection(context.getTargetAsmInfo().getDwarfLineSection());
MCOS->EmitDwarfAdvanceLineAddr(INT64_MAX, LastLabel, SectionEnd);
}
@@ -199,18 +201,18 @@ static inline void EmitDwarfLineTable(MCStreamer *MCOS,
//
// This emits the Dwarf file and the line tables.
//
void MCDwarfFileTable::Emit(MCStreamer *MCOS,
const MCSection *DwarfLineSection) {
void MCDwarfFileTable::Emit(MCStreamer *MCOS) {
MCContext &context = MCOS->getContext();
// Switch to the section where the table will be emitted into.
MCOS->SwitchSection(DwarfLineSection);
MCOS->SwitchSection(context.getTargetAsmInfo().getDwarfLineSection());
// Create a symbol at the beginning of this section.
MCSymbol *LineStartSym = MCOS->getContext().CreateTempSymbol();
MCSymbol *LineStartSym = context.CreateTempSymbol();
// Set the value of the symbol, as we are at the start of the section.
MCOS->EmitLabel(LineStartSym);
// Create a symbol for the end of the section (to be set when we get there).
MCSymbol *LineEndSym = MCOS->getContext().CreateTempSymbol();
MCSymbol *LineEndSym = context.CreateTempSymbol();
// The first 4 bytes is the total length of the information for this
// compilation unit (not including these 4 bytes for the length).
@@ -221,7 +223,7 @@ void MCDwarfFileTable::Emit(MCStreamer *MCOS,
MCOS->EmitIntValue(2, 2);
// Create a symbol for the end of the prologue (to be set when we get there).
MCSymbol *ProEndSym = MCOS->getContext().CreateTempSymbol(); // Lprologue_end
MCSymbol *ProEndSym = context.CreateTempSymbol(); // Lprologue_end
// Length of the prologue, is the next 4 bytes. Which is the start of the
// section to the end of the prologue. Not including the 4 bytes for the
@@ -256,7 +258,7 @@ void MCDwarfFileTable::Emit(MCStreamer *MCOS,
// First the directory table.
const std::vector<StringRef> &MCDwarfDirs =
MCOS->getContext().getMCDwarfDirs();
context.getMCDwarfDirs();
for (unsigned i = 0; i < MCDwarfDirs.size(); i++) {
MCOS->EmitBytes(MCDwarfDirs[i], 0); // the DirectoryName
MCOS->EmitBytes(StringRef("\0", 1), 0); // the null term. of the string
@@ -290,7 +292,7 @@ void MCDwarfFileTable::Emit(MCStreamer *MCOS,
++it) {
const MCSection *Sec = *it;
const MCLineSection *Line = MCLineSections.lookup(Sec);
EmitDwarfLineTable(MCOS, Sec, Line, DwarfLineSection);
EmitDwarfLineTable(MCOS, Sec, Line);
// Now delete the MCLineSections that were created in MCLineEntry::Make()
// and used to emit the line table.
@@ -425,3 +427,187 @@ void MCDwarfFile::dump() const {
print(dbgs());
}
static int getDataAlignmentFactor(MCStreamer &streamer) {
MCContext &context = streamer.getContext();
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
int size = asmInfo.getPointerSize();
if (asmInfo.getStackGrowthDirection() == TargetFrameInfo::StackGrowsUp)
return size;
else
return -size;
}
/// EmitFrameMoves - Emit frame instructions to describe the layout of the
/// frame.
static void EmitFrameMoves(MCStreamer &streamer,
const std::vector<MachineMove> &Moves,
MCSymbol *BaseLabel, bool isEH) {
MCContext &context = streamer.getContext();
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
int dataAlignmentFactor = getDataAlignmentFactor(streamer);
for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
const MachineMove &Move = Moves[i];
MCSymbol *Label = Move.getLabel();
// Throw out move if the label is invalid.
if (Label && !Label->isDefined()) continue; // Not emitted, in dead code.
const MachineLocation &Dst = Move.getDestination();
const MachineLocation &Src = Move.getSource();
// Advance row if new location.
if (BaseLabel && Label) {
MCSymbol *ThisSym = Label;
if (ThisSym != BaseLabel) {
streamer.EmitIntValue(dwarf::DW_CFA_advance_loc4, 1);
const MCExpr *Length = MakeStartMinusEndExpr(streamer, *BaseLabel,
*ThisSym, 4);
streamer.EmitValue(Length, 4);
BaseLabel = ThisSym;
}
}
// If advancing cfa.
if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
assert(!Src.isReg() && "Machine move not supported yet.");
if (Src.getReg() == MachineLocation::VirtualFP) {
streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_offset, 1);
} else {
streamer.EmitIntValue(dwarf::DW_CFA_def_cfa, 1);
streamer.EmitULEB128IntValue(asmInfo.getDwarfRegNum(Src.getReg(), isEH),
1);
}
streamer.EmitULEB128IntValue(-Src.getOffset(), 1);
continue;
}
if (Src.isReg() && Src.getReg() == MachineLocation::VirtualFP) {
assert(Dst.isReg() && "Machine move not supported yet.");
streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_register, 1);
streamer.EmitULEB128IntValue(asmInfo.getDwarfRegNum(Dst.getReg(), isEH));
continue;
}
unsigned Reg = asmInfo.getDwarfRegNum(Src.getReg(), isEH);
int Offset = Dst.getOffset() / dataAlignmentFactor;
if (Offset < 0) {
streamer.EmitIntValue(dwarf::DW_CFA_offset_extended_sf, 1);
streamer.EmitULEB128IntValue(Reg);
streamer.EmitSLEB128IntValue(Offset);
} else if (Reg < 64) {
streamer.EmitIntValue(dwarf::DW_CFA_offset + Reg, 1);
streamer.EmitULEB128IntValue(Offset, 1);
} else {
streamer.EmitIntValue(dwarf::DW_CFA_offset_extended, 1);
streamer.EmitULEB128IntValue(Reg, 1);
streamer.EmitULEB128IntValue(Offset, 1);
}
}
}
static const MCSymbol &EmitCIE(MCStreamer &streamer) {
MCContext &context = streamer.getContext();
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
const MCSection &section = *asmInfo.getEHFrameSection();
streamer.SwitchSection(&section);
MCSymbol *sectionStart = streamer.getContext().CreateTempSymbol();
MCSymbol *sectionEnd = streamer.getContext().CreateTempSymbol();
// Length
const MCExpr *Length = MakeStartMinusEndExpr(streamer, *sectionStart,
*sectionEnd, 4);
streamer.EmitLabel(sectionStart);
streamer.EmitValue(Length, 4);
// CIE ID
streamer.EmitIntValue(0, 4);
// Version
streamer.EmitIntValue(dwarf::DW_CIE_VERSION, 1);
// Augmentation String
SmallString<8> Augmentation;
Augmentation += "zR";
streamer.EmitBytes(Augmentation.str(), 0);
streamer.EmitIntValue(0, 1);
// Code Alignment Factor
streamer.EmitULEB128IntValue(1);
// Data Alignment Factor
streamer.EmitSLEB128IntValue(getDataAlignmentFactor(streamer));
// Return Address Register
streamer.EmitULEB128IntValue(asmInfo.getDwarfRARegNum(true));
// Augmentation Data Length (optional)
MCSymbol *augmentationStart = streamer.getContext().CreateTempSymbol();
MCSymbol *augmentationEnd = streamer.getContext().CreateTempSymbol();
const MCExpr *augmentationLength = MakeStartMinusEndExpr(streamer,
*augmentationStart,
*augmentationEnd, 0);
streamer.EmitULEB128Value(augmentationLength);
// Augmentation Data (optional)
streamer.EmitLabel(augmentationStart);
streamer.EmitIntValue(dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4, 1);
streamer.EmitLabel(augmentationEnd);
// Initial Instructions
const std::vector<MachineMove> Moves = asmInfo.getInitialFrameState();
EmitFrameMoves(streamer, Moves, NULL, true);
// Padding
streamer.EmitValueToAlignment(asmInfo.getPointerSize());
streamer.EmitLabel(sectionEnd);
return *sectionStart;
}
static void EmitFDE(MCStreamer &streamer,
const MCSymbol &cieStart,
const MCDwarfFrameInfo &frame) {
MCContext &context = streamer.getContext();
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
MCSymbol *fdeStart = streamer.getContext().CreateTempSymbol();
MCSymbol *fdeEnd = streamer.getContext().CreateTempSymbol();
// Length
const MCExpr *Length = MakeStartMinusEndExpr(streamer, *fdeStart, *fdeEnd, 0);
streamer.EmitValue(Length, 4);
streamer.EmitLabel(fdeStart);
// CIE Pointer
const MCExpr *offset = MakeStartMinusEndExpr(streamer, cieStart, *fdeStart,
0);
streamer.EmitValue(offset, 4);
// PC Begin
streamer.EmitPCRelSymbolValue(frame.Begin, 4);
// PC Range
const MCExpr *Range = MakeStartMinusEndExpr(streamer, *frame.Begin,
*frame.End, 0);
streamer.EmitValue(Range, 4);
// Augmentation Data Length
streamer.EmitULEB128IntValue(0);
// Augmentation Data
// Call Frame Instructions
// Padding
streamer.EmitValueToAlignment(asmInfo.getPointerSize());
streamer.EmitLabel(fdeEnd);
}
void MCDwarfFrameEmitter::Emit(MCStreamer &streamer) {
const MCSymbol &cieStart = EmitCIE(streamer);
for (unsigned i = 0, n = streamer.getNumFrameInfos(); i < n; ++i)
EmitFDE(streamer, cieStart, streamer.getFrameInfo(i));
}

11
lib/MC/MCELFStreamer.cpp
View File

@@ -30,6 +30,7 @@
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetAsmBackend.h"
#include "llvm/Target/TargetAsmInfo.h"
using namespace llvm;
@@ -478,14 +479,8 @@ void MCELFStreamer::EmitInstToData(const MCInst &Inst) {
}
void MCELFStreamer::Finish() {
// FIXME: duplicated code with the MachO streamer.
// Dump out the dwarf file & directory tables and line tables.
if (getContext().hasDwarfFiles()) {
const MCSection *DwarfLineSection =
getContext().getELFSection(".debug_line", 0, 0,
SectionKind::getDataRelLocal());
MCDwarfFileTable::Emit(this, DwarfLineSection);
}
if (!FrameInfos.empty())
MCDwarfFrameEmitter::Emit(*this);
for (std::vector<LocalCommon>::const_iterator i = LocalCommons.begin(),
e = LocalCommons.end();

5
lib/MC/MCLoggingStreamer.cpp
View File

@@ -154,9 +154,10 @@ public:
return Child->EmitBytes(Data, AddrSpace);
}
virtual void EmitValue(const MCExpr *Value, unsigned Size,unsigned AddrSpace){
virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
bool isPCRel, unsigned AddrSpace){
LogCall("EmitValue");
return Child->EmitValue(Value, Size, AddrSpace);
return Child->EmitValueImpl(Value, Size, isPCRel, AddrSpace);
}
virtual void EmitULEB128Value(const MCExpr *Value,

10
lib/MC/MCMachOStreamer.cpp
View File

@@ -24,6 +24,7 @@
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetAsmBackend.h"
#include "llvm/Target/TargetAsmInfo.h"
using namespace llvm;
@@ -354,15 +355,6 @@ void MCMachOStreamer::EmitInstToData(const MCInst &Inst) {
}
void MCMachOStreamer::Finish() {
// Dump out the dwarf file & directory tables and line tables.
if (getContext().hasDwarfFiles()) {
const MCSection *DwarfLineSection = getContext().getMachOSection("__DWARF",
"__debug_line",
MCSectionMachO::S_ATTR_DEBUG,
0, SectionKind::getDataRelLocal());
MCDwarfFileTable::Emit(this, DwarfLineSection);
}
// We have to set the fragment atom associations so we can relax properly for
// Mach-O.

4
lib/MC/MCNullStreamer.cpp
View File

@@ -68,8 +68,8 @@ namespace {
uint64_t Size, unsigned ByteAlignment) {}
virtual void EmitBytes(StringRef Data, unsigned AddrSpace) {}
virtual void EmitValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {}
virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
bool isPCRel, unsigned AddrSpace) {}
virtual void EmitULEB128Value(const MCExpr *Value,
unsigned AddrSpace = 0) {}
virtual void EmitSLEB128Value(const MCExpr *Value,

14
lib/MC/MCObjectStreamer.cpp
View File

@@ -12,10 +12,12 @@
#include "llvm/Support/ErrorHandling.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/TargetAsmBackend.h"
#include "llvm/Target/TargetAsmInfo.h"
using namespace llvm;
MCObjectStreamer::MCObjectStreamer(MCContext &Context, TargetAsmBackend &TAB,
@@ -74,8 +76,8 @@ const MCExpr *MCObjectStreamer::AddValueSymbols(const MCExpr *Value) {
return Value;
}
void MCObjectStreamer::EmitValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {
void MCObjectStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
bool isPCRel, unsigned AddrSpace) {
assert(AddrSpace == 0 && "Address space must be 0!");
MCDataFragment *DF = getOrCreateDataFragment();
@@ -87,7 +89,7 @@ void MCObjectStreamer::EmitValue(const MCExpr *Value, unsigned Size,
}
DF->addFixup(MCFixup::Create(DF->getContents().size(),
AddValueSymbols(Value),
MCFixup::getKindForSize(Size, false)));
MCFixup::getKindForSize(Size, isPCRel)));
DF->getContents().resize(DF->getContents().size() + Size, 0);
}
@@ -189,7 +191,7 @@ void MCObjectStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
const MCSymbol *LastLabel,
const MCSymbol *Label) {
if (!LastLabel) {
int PointerSize = getAssembler().getBackend().getPointerSize();
int PointerSize = getContext().getTargetAsmInfo().getPointerSize();
EmitDwarfSetLineAddr(LineDelta, Label, PointerSize);
return;
}
@@ -215,5 +217,9 @@ void MCObjectStreamer::EmitValueToOffset(const MCExpr *Offset,
}
void MCObjectStreamer::Finish() {
// Dump out the dwarf file & directory tables and line tables.
if (getContext().hasDwarfFiles())
MCDwarfFileTable::Emit(this);
getAssembler().Finish();
}

58
lib/MC/MCStreamer.cpp
View File

@@ -85,9 +85,31 @@ void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
EmitSymbolValue(ABS, Size, AddrSpace);
}
void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {
EmitValueImpl(Value, Size, false, AddrSpace);
}
void MCStreamer::EmitPCRelValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {
EmitValueImpl(Value, Size, true, AddrSpace);
}
void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
bool isPCRel, unsigned AddrSpace) {
EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, isPCRel,
AddrSpace);
}
void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
unsigned AddrSpace) {
EmitValue(MCSymbolRefExpr::Create(Sym, getContext()), Size, AddrSpace);
EmitSymbolValue(Sym, Size, false, AddrSpace);
}
void MCStreamer::EmitPCRelSymbolValue(const MCSymbol *Sym, unsigned Size,
unsigned AddrSpace) {
EmitSymbolValue(Sym, Size, true, AddrSpace);
}
void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
@@ -116,31 +138,65 @@ void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
Discriminator);
}
MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
if (FrameInfos.empty())
return NULL;
return &FrameInfos.back();
}
void MCStreamer::EnsureValidFrame() {
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
if (!CurFrame || CurFrame->End)
report_fatal_error("No open frame");
}
bool MCStreamer::EmitCFIStartProc() {
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
if (CurFrame && !CurFrame->End) {
report_fatal_error("Starting a frame before finishing the previous one!");
return true;
}
MCDwarfFrameInfo Frame = {0, 0, 0, 0};
Frame.Begin = getContext().CreateTempSymbol();
EmitLabel(Frame.Begin);
FrameInfos.push_back(Frame);
return false;
}
bool MCStreamer::EmitCFIEndProc() {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
CurFrame->End = getContext().CreateTempSymbol();
EmitLabel(CurFrame->End);
return false;
}
bool MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
EnsureValidFrame();
return false;
}
bool MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
EnsureValidFrame();
return false;
}
bool MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
EnsureValidFrame();
return false;
}
bool MCStreamer::EmitCFIPersonality(const MCSymbol *Sym) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
CurFrame->Personality = Sym;
return false;
}
bool MCStreamer::EmitCFILsda(const MCSymbol *Sym) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
CurFrame->Lsda = Sym;
return false;
}