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-rw-r--r--lib/MC/MCStreamer.cpp168
1 files changed, 126 insertions, 42 deletions
diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp
index 4b302c8..fa245b1 100644
--- a/lib/MC/MCStreamer.cpp
+++ b/lib/MC/MCStreamer.cpp
@@ -12,6 +12,7 @@
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectWriter.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/SmallString.h"
@@ -27,6 +28,29 @@ MCStreamer::MCStreamer(MCContext &Ctx) : Context(Ctx) {
MCStreamer::~MCStreamer() {
}
+const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
+ const MCSymbol *A,
+ const MCSymbol *B) {
+ MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
+ const MCExpr *ARef =
+ MCSymbolRefExpr::Create(A, Variant, Context);
+ const MCExpr *BRef =
+ MCSymbolRefExpr::Create(B, Variant, Context);
+ const MCExpr *AddrDelta =
+ MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
+ return AddrDelta;
+}
+
+const MCExpr *MCStreamer::ForceExpAbs(MCStreamer *Streamer,
+ MCContext &Context, const MCExpr* Expr) {
+ if (Context.getAsmInfo().hasAggressiveSymbolFolding())
+ return Expr;
+
+ MCSymbol *ABS = Context.CreateTempSymbol();
+ Streamer->EmitAssignment(ABS, Expr);
+ return MCSymbolRefExpr::Create(ABS, Context);
+}
+
raw_ostream &MCStreamer::GetCommentOS() {
// By default, discard comments.
return nulls();
@@ -90,30 +114,15 @@ void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size,
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);
+ EmitValueImpl(Value, Size, AddrSpace);
}
void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
- bool isPCRel, unsigned AddrSpace) {
- EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, isPCRel,
+ unsigned AddrSpace) {
+ EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size,
AddrSpace);
}
-void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
- unsigned 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) {
report_fatal_error("unsupported directive in streamer");
}
@@ -135,7 +144,8 @@ bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Column, unsigned Flags,
unsigned Isa,
- unsigned Discriminator) {
+ unsigned Discriminator,
+ StringRef FileName) {
getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
Discriminator);
}
@@ -152,28 +162,39 @@ void MCStreamer::EnsureValidFrame() {
report_fatal_error("No open frame");
}
-bool MCStreamer::EmitCFIStartProc() {
+void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
+ MCSymbol *EHSymbol) {
+}
+
+void MCStreamer::EmitLabel(MCSymbol *Symbol) {
+ assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
+ assert(getCurrentSection() && "Cannot emit before setting section!");
+ Symbol->setSection(*getCurrentSection());
+
+ StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix();
+ if (!Symbol->getName().startswith(Prefix))
+ LastNonPrivate = Symbol;
+}
+
+void MCStreamer::EmitCFIStartProc() {
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
- if (CurFrame && !CurFrame->End) {
+ if (CurFrame && !CurFrame->End)
report_fatal_error("Starting a frame before finishing the previous one!");
- return true;
- }
MCDwarfFrameInfo Frame;
Frame.Begin = getContext().CreateTempSymbol();
+ Frame.Function = LastNonPrivate;
EmitLabel(Frame.Begin);
FrameInfos.push_back(Frame);
- return false;
}
-bool MCStreamer::EmitCFIEndProc() {
+void MCStreamer::EmitCFIEndProc() {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
CurFrame->End = getContext().CreateTempSymbol();
EmitLabel(CurFrame->End);
- return false;
}
-bool MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
+void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
MCSymbol *Label = getContext().CreateTempSymbol();
@@ -182,10 +203,9 @@ bool MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
MachineLocation Source(Register, -Offset);
MCCFIInstruction Instruction(Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
- return false;
}
-bool MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
+void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
MCSymbol *Label = getContext().CreateTempSymbol();
@@ -194,10 +214,20 @@ bool MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
MachineLocation Source(MachineLocation::VirtualFP, -Offset);
MCCFIInstruction Instruction(Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
- return false;
}
-bool MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
+void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ MachineLocation Dest(MachineLocation::VirtualFP);
+ MachineLocation Source(MachineLocation::VirtualFP, Adjustment);
+ MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
+ CurFrame->Instructions.push_back(Instruction);
+}
+
+void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
MCSymbol *Label = getContext().CreateTempSymbol();
@@ -206,10 +236,9 @@ bool MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
MachineLocation Source(MachineLocation::VirtualFP);
MCCFIInstruction Instruction(Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
- return false;
}
-bool MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
+void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
MCSymbol *Label = getContext().CreateTempSymbol();
@@ -218,37 +247,44 @@ bool MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
MachineLocation Source(Register, Offset);
MCCFIInstruction Instruction(Label, Dest, Source);
CurFrame->Instructions.push_back(Instruction);
- return false;
}
-bool MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
+void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ MachineLocation Dest(Register, Offset);
+ MachineLocation Source(Register, Offset);
+ MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source);
+ CurFrame->Instructions.push_back(Instruction);
+}
+
+void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
unsigned Encoding) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
CurFrame->Personality = Sym;
CurFrame->PersonalityEncoding = Encoding;
- return false;
}
-bool MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
+void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
CurFrame->Lsda = Sym;
CurFrame->LsdaEncoding = Encoding;
- return false;
}
-bool MCStreamer::EmitCFIRememberState() {
+void MCStreamer::EmitCFIRememberState() {
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
MCSymbol *Label = getContext().CreateTempSymbol();
EmitLabel(Label);
MCCFIInstruction Instruction(MCCFIInstruction::Remember, Label);
CurFrame->Instructions.push_back(Instruction);
- return false;
}
-bool MCStreamer::EmitCFIRestoreState() {
+void MCStreamer::EmitCFIRestoreState() {
// FIXME: Error if there is no matching cfi_remember_state.
EnsureValidFrame();
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
@@ -256,7 +292,55 @@ bool MCStreamer::EmitCFIRestoreState() {
EmitLabel(Label);
MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label);
CurFrame->Instructions.push_back(Instruction);
- return false;
+}
+
+void MCStreamer::EmitCFISameValue(int64_t Register) {
+ EnsureValidFrame();
+ MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register);
+ CurFrame->Instructions.push_back(Instruction);
+}
+
+void MCStreamer::EmitFnStart() {
+ errs() << "Not implemented yet\n";
+ abort();
+}
+
+void MCStreamer::EmitFnEnd() {
+ errs() << "Not implemented yet\n";
+ abort();
+}
+
+void MCStreamer::EmitCantUnwind() {
+ errs() << "Not implemented yet\n";
+ abort();
+}
+
+void MCStreamer::EmitHandlerData() {
+ errs() << "Not implemented yet\n";
+ abort();
+}
+
+void MCStreamer::EmitPersonality(const MCSymbol *Personality) {
+ errs() << "Not implemented yet\n";
+ abort();
+}
+
+void MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) {
+ errs() << "Not implemented yet\n";
+ abort();
+}
+
+void MCStreamer::EmitPad(int64_t Offset) {
+ errs() << "Not implemented yet\n";
+ abort();
+}
+
+void MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) {
+ errs() << "Not implemented yet\n";
+ abort();
}
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
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