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-rw-r--r--contrib/llvm/lib/MC/MCStreamer.cpp77
1 files changed, 57 insertions, 20 deletions
diff --git a/contrib/llvm/lib/MC/MCStreamer.cpp b/contrib/llvm/lib/MC/MCStreamer.cpp
index f11ee66..011969a 100644
--- a/contrib/llvm/lib/MC/MCStreamer.cpp
+++ b/contrib/llvm/lib/MC/MCStreamer.cpp
@@ -14,8 +14,10 @@
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectWriter.h"
+#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCWin64EH.h"
#include "llvm/Support/ErrorHandling.h"
@@ -115,7 +117,7 @@ void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
"SectionRelative value requires 4-bytes");
if (!IsSectionRelative)
- EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
+ EmitValueImpl(MCSymbolRefExpr::create(Sym, getContext()), Size);
else
EmitCOFFSecRel32(Sym);
}
@@ -131,7 +133,7 @@ void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
/// EmitFill - Emit NumBytes bytes worth of the value specified by
/// FillValue. This implements directives such as '.space'.
void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
- const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
+ const MCExpr *E = MCConstantExpr::create(FillValue, getContext());
for (uint64_t i = 0, e = NumBytes; i != e; ++i)
EmitValue(E, 1);
}
@@ -144,7 +146,7 @@ void MCStreamer::EmitZeros(uint64_t NumBytes) {
unsigned MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
StringRef Directory,
StringRef Filename, unsigned CUID) {
- return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID);
+ return getContext().getDwarfFile(Directory, Filename, FileNo, CUID);
}
void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
@@ -161,7 +163,7 @@ MCSymbol *MCStreamer::getDwarfLineTableSymbol(unsigned CUID) {
if (!Table.getLabel()) {
StringRef Prefix = Context.getAsmInfo()->getPrivateGlobalPrefix();
Table.setLabel(
- Context.GetOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
+ Context.getOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
}
return Table.getLabel();
}
@@ -186,7 +188,7 @@ void MCStreamer::InitSections(bool NoExecStack) {
SwitchSection(getContext().getObjectFileInfo()->getTextSection());
}
-void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
+void MCStreamer::AssignSection(MCSymbol *Symbol, MCSection *Section) {
if (Section)
Symbol->setSection(*Section);
else
@@ -250,7 +252,7 @@ void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
MCSymbol *MCStreamer::EmitCFICommon() {
EnsureValidDwarfFrame();
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
return Label;
}
@@ -389,15 +391,21 @@ void MCStreamer::EmitCFIWindowSave() {
}
void MCStreamer::EnsureValidWinFrameInfo() {
+ const MCAsmInfo *MAI = Context.getAsmInfo();
+ if (!MAI->usesWindowsCFI())
+ report_fatal_error(".seh_* directives are not supported on this target");
if (!CurrentWinFrameInfo || CurrentWinFrameInfo->End)
report_fatal_error("No open Win64 EH frame function!");
}
void MCStreamer::EmitWinCFIStartProc(const MCSymbol *Symbol) {
+ const MCAsmInfo *MAI = Context.getAsmInfo();
+ if (!MAI->usesWindowsCFI())
+ report_fatal_error(".seh_* directives are not supported on this target");
if (CurrentWinFrameInfo && !CurrentWinFrameInfo->End)
report_fatal_error("Starting a function before ending the previous one!");
- MCSymbol *StartProc = getContext().CreateTempSymbol();
+ MCSymbol *StartProc = getContext().createTempSymbol();
EmitLabel(StartProc);
WinFrameInfos.push_back(new WinEH::FrameInfo(Symbol, StartProc));
@@ -409,7 +417,7 @@ void MCStreamer::EmitWinCFIEndProc() {
if (CurrentWinFrameInfo->ChainedParent)
report_fatal_error("Not all chained regions terminated!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
CurrentWinFrameInfo->End = Label;
}
@@ -417,7 +425,7 @@ void MCStreamer::EmitWinCFIEndProc() {
void MCStreamer::EmitWinCFIStartChained() {
EnsureValidWinFrameInfo();
- MCSymbol *StartProc = getContext().CreateTempSymbol();
+ MCSymbol *StartProc = getContext().createTempSymbol();
EmitLabel(StartProc);
WinFrameInfos.push_back(new WinEH::FrameInfo(CurrentWinFrameInfo->Function,
@@ -430,7 +438,7 @@ void MCStreamer::EmitWinCFIEndChained() {
if (!CurrentWinFrameInfo->ChainedParent)
report_fatal_error("End of a chained region outside a chained region!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
CurrentWinFrameInfo->End = Label;
@@ -461,7 +469,7 @@ void MCStreamer::EmitWinEHHandlerData() {
void MCStreamer::EmitWinCFIPushReg(unsigned Register) {
EnsureValidWinFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst = Win64EH::Instruction::PushNonVol(Label, Register);
@@ -477,7 +485,7 @@ void MCStreamer::EmitWinCFISetFrame(unsigned Register, unsigned Offset) {
if (Offset > 240)
report_fatal_error("Frame offset must be less than or equal to 240!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst =
@@ -493,7 +501,7 @@ void MCStreamer::EmitWinCFIAllocStack(unsigned Size) {
if (Size & 7)
report_fatal_error("Misaligned stack allocation!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst = Win64EH::Instruction::Alloc(Label, Size);
@@ -505,7 +513,7 @@ void MCStreamer::EmitWinCFISaveReg(unsigned Register, unsigned Offset) {
if (Offset & 7)
report_fatal_error("Misaligned saved register offset!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst =
@@ -518,7 +526,7 @@ void MCStreamer::EmitWinCFISaveXMM(unsigned Register, unsigned Offset) {
if (Offset & 0x0F)
report_fatal_error("Misaligned saved vector register offset!");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst =
@@ -531,7 +539,7 @@ void MCStreamer::EmitWinCFIPushFrame(bool Code) {
if (CurrentWinFrameInfo->Instructions.size() > 0)
report_fatal_error("If present, PushMachFrame must be the first UOP");
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
WinEH::Instruction Inst = Win64EH::Instruction::PushMachFrame(Label, Code);
@@ -541,12 +549,15 @@ void MCStreamer::EmitWinCFIPushFrame(bool Code) {
void MCStreamer::EmitWinCFIEndProlog() {
EnsureValidWinFrameInfo();
- MCSymbol *Label = getContext().CreateTempSymbol();
+ MCSymbol *Label = getContext().createTempSymbol();
EmitLabel(Label);
CurrentWinFrameInfo->PrologEnd = Label;
}
+void MCStreamer::EmitCOFFSafeSEH(MCSymbol const *Symbol) {
+}
+
void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
}
@@ -635,12 +646,12 @@ void MCStreamer::EndCOFFSymbolDef() {}
void MCStreamer::EmitFileDirective(StringRef Filename) {}
void MCStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {}
void MCStreamer::EmitCOFFSymbolType(int Type) {}
-void MCStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {}
+void MCStreamer::emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) {}
void MCStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {}
-void MCStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
+void MCStreamer::EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {}
-void MCStreamer::ChangeSection(const MCSection *, const MCExpr *) {}
+void MCStreamer::ChangeSection(MCSection *, const MCExpr *) {}
void MCStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {}
void MCStreamer::EmitBytes(StringRef Data) {}
void MCStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
@@ -661,3 +672,29 @@ void MCStreamer::EmitBundleAlignMode(unsigned AlignPow2) {}
void MCStreamer::EmitBundleLock(bool AlignToEnd) {}
void MCStreamer::FinishImpl() {}
void MCStreamer::EmitBundleUnlock() {}
+
+void MCStreamer::SwitchSection(MCSection *Section, const MCExpr *Subsection) {
+ assert(Section && "Cannot switch to a null section!");
+ MCSectionSubPair curSection = SectionStack.back().first;
+ SectionStack.back().second = curSection;
+ if (MCSectionSubPair(Section, Subsection) != curSection) {
+ ChangeSection(Section, Subsection);
+ SectionStack.back().first = MCSectionSubPair(Section, Subsection);
+ assert(!Section->hasEnded() && "Section already ended");
+ MCSymbol *Sym = Section->getBeginSymbol();
+ if (Sym && !Sym->isInSection())
+ EmitLabel(Sym);
+ }
+}
+
+MCSymbol *MCStreamer::endSection(MCSection *Section) {
+ // TODO: keep track of the last subsection so that this symbol appears in the
+ // correct place.
+ MCSymbol *Sym = Section->getEndSymbol(Context);
+ if (Sym->isInSection())
+ return Sym;
+
+ SwitchSection(Section);
+ EmitLabel(Sym);
+ return Sym;
+}
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