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-rw-r--r--lib/MC/MCAsmStreamer.cpp169
1 files changed, 59 insertions, 110 deletions
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 781e400..ca49f8f 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -25,6 +25,7 @@
#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
@@ -65,17 +66,15 @@ private:
virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame);
public:
- MCAsmStreamer(MCContext &Context, formatted_raw_ostream &os,
- bool isVerboseAsm, bool useLoc, bool useCFI,
- bool useDwarfDirectory,
- MCInstPrinter *printer, MCCodeEmitter *emitter,
- MCAsmBackend *asmbackend,
- bool showInst)
- : MCStreamer(SK_AsmStreamer, Context), OS(os), MAI(Context.getAsmInfo()),
- InstPrinter(printer), Emitter(emitter), AsmBackend(asmbackend),
- CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
- ShowInst(showInst), UseLoc(useLoc), UseCFI(useCFI),
- UseDwarfDirectory(useDwarfDirectory) {
+ MCAsmStreamer(MCContext &Context, MCTargetStreamer *TargetStreamer,
+ formatted_raw_ostream &os, bool isVerboseAsm, bool useLoc,
+ bool useCFI, bool useDwarfDirectory, MCInstPrinter *printer,
+ MCCodeEmitter *emitter, MCAsmBackend *asmbackend, bool showInst)
+ : MCStreamer(Context, TargetStreamer), OS(os), MAI(Context.getAsmInfo()),
+ InstPrinter(printer), Emitter(emitter), AsmBackend(asmbackend),
+ CommentStream(CommentToEmit), IsVerboseAsm(isVerboseAsm),
+ ShowInst(showInst), UseLoc(useLoc), UseCFI(useCFI),
+ UseDwarfDirectory(useDwarfDirectory) {
if (InstPrinter && IsVerboseAsm)
InstPrinter->setCommentStream(CommentStream);
}
@@ -154,7 +153,7 @@ public:
virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
const MCSymbol *Label);
- virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
+ virtual bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol);
@@ -214,6 +213,7 @@ public:
unsigned Isa, unsigned Discriminator,
StringRef FileName);
+ virtual void EmitIdent(StringRef IdentString);
virtual void EmitCFISections(bool EH, bool Debug);
virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
virtual void EmitCFIDefCfaOffset(int64_t Offset);
@@ -229,6 +229,7 @@ public:
virtual void EmitCFISignalFrame();
virtual void EmitCFIUndefined(int64_t Register);
virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
+ virtual void EmitCFIWindowSave();
virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
virtual void EmitWin64EHEndProc();
@@ -245,17 +246,6 @@ public:
virtual void EmitWin64EHPushFrame(bool Code);
virtual void EmitWin64EHEndProlog();
- virtual void EmitFnStart();
- virtual void EmitFnEnd();
- virtual void EmitCantUnwind();
- virtual void EmitPersonality(const MCSymbol *Personality);
- virtual void EmitHandlerData();
- virtual void EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0);
- virtual void EmitPad(int64_t Offset);
- virtual void EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool);
-
- virtual void EmitTCEntry(const MCSymbol &S);
-
virtual void EmitInstruction(const MCInst &Inst);
virtual void EmitBundleAlignMode(unsigned AlignPow2);
@@ -265,15 +255,9 @@ public:
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
/// indicated by the hasRawTextSupport() predicate.
- virtual void EmitRawText(StringRef String);
+ virtual void EmitRawTextImpl(StringRef String);
virtual void FinishImpl();
-
- /// @}
-
- static bool classof(const MCStreamer *S) {
- return S->getKind() == SK_AsmStreamer;
- }
};
} // end anonymous namespace.
@@ -436,7 +420,7 @@ void MCAsmStreamer::EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
}
-void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
+bool MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
switch (Attribute) {
case MCSA_Invalid: llvm_unreachable("Invalid symbol attribute");
@@ -447,11 +431,12 @@ void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
case MCSA_ELF_TypeCommon: /// .type _foo, STT_COMMON # aka @common
case MCSA_ELF_TypeNoType: /// .type _foo, STT_NOTYPE # aka @notype
case MCSA_ELF_TypeGnuUniqueObject: /// .type _foo, @gnu_unique_object
- assert(MAI->hasDotTypeDotSizeDirective() && "Symbol Attr not supported");
+ if (!MAI->hasDotTypeDotSizeDirective())
+ return false; // Symbol attribute not supported
OS << "\t.type\t" << *Symbol << ','
<< ((MAI->getCommentString()[0] != '@') ? '@' : '%');
switch (Attribute) {
- default: llvm_unreachable("Unknown ELF .type");
+ default: return false;
case MCSA_ELF_TypeFunction: OS << "function"; break;
case MCSA_ELF_TypeIndFunction: OS << "gnu_indirect_function"; break;
case MCSA_ELF_TypeObject: OS << "object"; break;
@@ -461,7 +446,7 @@ void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
case MCSA_ELF_TypeGnuUniqueObject: OS << "gnu_unique_object"; break;
}
EmitEOL();
- return;
+ return true;
case MCSA_Global: // .globl/.global
OS << MAI->getGlobalDirective();
FlagMap[Symbol] |= EHGlobal;
@@ -491,6 +476,8 @@ void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
OS << *Symbol;
EmitEOL();
+
+ return true;
}
void MCAsmStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
@@ -530,6 +517,9 @@ void MCAsmStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
+ // Common symbols do not belong to any actual section.
+ AssignSection(Symbol, NULL);
+
OS << "\t.comm\t" << *Symbol << ',' << Size;
if (ByteAlignment != 0) {
if (MAI->getCOMMDirectiveAlignmentIsInBytes())
@@ -546,6 +536,9 @@ void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
/// @param Size - The size of the common symbol.
void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlign) {
+ // Common symbols do not belong to any actual section.
+ AssignSection(Symbol, NULL);
+
OS << "\t.lcomm\t" << *Symbol << ',' << Size;
if (ByteAlign > 1) {
switch (MAI->getLCOMMDirectiveAlignmentType()) {
@@ -565,6 +558,9 @@ void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
void MCAsmStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {
+ if (Symbol)
+ AssignSection(Symbol, Section);
+
// Note: a .zerofill directive does not switch sections.
OS << ".zerofill ";
@@ -585,6 +581,8 @@ void MCAsmStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
// e.g. _a.
void MCAsmStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {
+ AssignSection(Symbol, Section);
+
assert(Symbol != NULL && "Symbol shouldn't be NULL!");
// Instead of using the Section we'll just use the shortcut.
// This is a mach-o specific directive and section.
@@ -654,7 +652,6 @@ void MCAsmStreamer::EmitBytes(StringRef Data) {
OS << MAI->getAsciiDirective();
}
- OS << ' ';
PrintQuotedString(Data, OS);
EmitEOL();
}
@@ -884,6 +881,13 @@ void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
EmitEOL();
}
+void MCAsmStreamer::EmitIdent(StringRef IdentString) {
+ assert(MAI->hasIdentDirective() && ".ident directive not supported");
+ OS << "\t.ident\t";
+ PrintQuotedString(IdentString, OS);
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitCFISections(bool EH, bool Debug) {
MCStreamer::EmitCFISections(EH, Debug);
@@ -1085,6 +1089,16 @@ void MCAsmStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
EmitEOL();
}
+void MCAsmStreamer::EmitCFIWindowSave() {
+ MCStreamer::EmitCFIWindowSave();
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_window_save";
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
MCStreamer::EmitWin64EHStartProc(Symbol);
@@ -1290,73 +1304,6 @@ void MCAsmStreamer::AddEncodingComment(const MCInst &Inst) {
}
}
-void MCAsmStreamer::EmitFnStart() {
- OS << "\t.fnstart";
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitFnEnd() {
- OS << "\t.fnend";
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitCantUnwind() {
- OS << "\t.cantunwind";
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitHandlerData() {
- OS << "\t.handlerdata";
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitPersonality(const MCSymbol *Personality) {
- OS << "\t.personality " << Personality->getName();
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
- OS << "\t.setfp\t";
- InstPrinter->printRegName(OS, FpReg);
- OS << ", ";
- InstPrinter->printRegName(OS, SpReg);
- if (Offset)
- OS << ", #" << Offset;
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitPad(int64_t Offset) {
- OS << "\t.pad\t#" << Offset;
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList,
- bool isVector) {
- assert(RegList.size() && "RegList should not be empty");
- if (isVector)
- OS << "\t.vsave\t{";
- else
- OS << "\t.save\t{";
-
- InstPrinter->printRegName(OS, RegList[0]);
-
- for (unsigned i = 1, e = RegList.size(); i != e; ++i) {
- OS << ", ";
- InstPrinter->printRegName(OS, RegList[i]);
- }
-
- OS << "}";
- EmitEOL();
-}
-
-void MCAsmStreamer::EmitTCEntry(const MCSymbol &S) {
- OS << "\t.tc ";
- OS << S.getName();
- OS << "[TC],";
- OS << S.getName();
- EmitEOL();
-}
-
void MCAsmStreamer::EmitInstruction(const MCInst &Inst) {
assert(getCurrentSection().first &&
"Cannot emit contents before setting section!");
@@ -1399,7 +1346,7 @@ void MCAsmStreamer::EmitBundleUnlock() {
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
/// indicated by the hasRawTextSupport() predicate.
-void MCAsmStreamer::EmitRawText(StringRef String) {
+void MCAsmStreamer::EmitRawTextImpl(StringRef String) {
if (!String.empty() && String.back() == '\n')
String = String.substr(0, String.size()-1);
OS << String;
@@ -1418,14 +1365,16 @@ void MCAsmStreamer::FinishImpl() {
MCGenDwarfInfo::Emit(this, LineSectionSymbol);
if (!UseCFI)
- EmitFrames(false);
+ EmitFrames(AsmBackend.get(), false);
}
+
MCStreamer *llvm::createAsmStreamer(MCContext &Context,
+ MCTargetStreamer *TargetStreamer,
formatted_raw_ostream &OS,
- bool isVerboseAsm, bool useLoc,
- bool useCFI, bool useDwarfDirectory,
- MCInstPrinter *IP, MCCodeEmitter *CE,
- MCAsmBackend *MAB, bool ShowInst) {
- return new MCAsmStreamer(Context, OS, isVerboseAsm, useLoc, useCFI,
- useDwarfDirectory, IP, CE, MAB, ShowInst);
+ bool isVerboseAsm, bool useLoc, bool useCFI,
+ bool useDwarfDirectory, MCInstPrinter *IP,
+ MCCodeEmitter *CE, MCAsmBackend *MAB,
+ bool ShowInst) {
+ return new MCAsmStreamer(Context, TargetStreamer, OS, isVerboseAsm, useLoc,
+ useCFI, useDwarfDirectory, IP, CE, MAB, ShowInst);
}
generated by cgit v1.1 at 2025-07-03 15:41:26 +0000