#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCWin64EH.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/raw_ostream.h"
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
}
-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(const MCExpr* Expr) {
- assert(!isa<MCSymbolRefExpr>(Expr));
- if (Context.getAsmInfo()->hasAggressiveSymbolFolding())
- return Expr;
-
- MCSymbol *ABS = Context.CreateTempSymbol();
- EmitAssignment(ABS, Expr);
- return MCSymbolRefExpr::Create(ABS, Context);
-}
-
raw_ostream &MCStreamer::GetCommentOS() {
// By default, discard comments.
return nulls();
(MAB ? MAB->generateCompactUnwindEncoding(FI.Instructions) : 0);
}
-void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
- const MCSymbol *Label, int PointerSize) {
- // emit the sequence to set the address
- EmitIntValue(dwarf::DW_LNS_extended_op, 1);
- EmitULEB128IntValue(PointerSize + 1);
- EmitIntValue(dwarf::DW_LNE_set_address, 1);
- EmitSymbolValue(Label, PointerSize);
-
- // emit the sequence for the LineDelta (from 1) and a zero address delta.
- MCDwarfLineAddr::Emit(this, LineDelta, 0);
-}
-
/// EmitIntValue - Special case of EmitValue that avoids the client having to
/// pass in a MCExpr for constant integers.
void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
EmitBytes(OSE.str());
}
-void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
- const MCExpr *ABS = ForceExpAbs(Value);
- EmitValue(ABS, Size);
-}
-
-
void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
const SMLoc &Loc) {
EmitValueImpl(Value, Size, Loc);
}
-void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
- EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
+void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size,
+ bool IsSectionRelative) {
+ assert((!IsSectionRelative || Size == 4) &&
+ "SectionRelative value requires 4-bytes");
+
+ if (!IsSectionRelative)
+ EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
+ else
+ EmitCOFFSecRel32(Sym);
}
void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
TS->emitLabel(Symbol);
}
-void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
- EnsureValidDwarfFrame();
- MCDwarfFrameInfo *CurFrame = getCurrentDwarfFrameInfo();
- CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
-}
-
void MCStreamer::EmitCFISections(bool EH, bool Debug) {
assert(EH || Debug);
}
void MCStreamer::EmitWinCFIStartProc(const MCSymbol *Symbol) {
if (CurrentWinFrameInfo && !CurrentWinFrameInfo->End)
report_fatal_error("Starting a function before ending the previous one!");
- MCWinFrameInfo *Frame = new MCWinFrameInfo;
- Frame->Begin = getContext().CreateTempSymbol();
- Frame->Function = Symbol;
- EmitLabel(Frame->Begin);
- WinFrameInfos.push_back(Frame);
+
+ MCSymbol *StartProc = getContext().CreateTempSymbol();
+ EmitLabel(StartProc);
+
+ WinFrameInfos.push_back(new WinEH::FrameInfo(Symbol, StartProc));
CurrentWinFrameInfo = WinFrameInfos.back();
}
EnsureValidWinFrameInfo();
if (CurrentWinFrameInfo->ChainedParent)
report_fatal_error("Not all chained regions terminated!");
- CurrentWinFrameInfo->End = getContext().CreateTempSymbol();
- EmitLabel(CurrentWinFrameInfo->End);
+
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+ CurrentWinFrameInfo->End = Label;
}
void MCStreamer::EmitWinCFIStartChained() {
EnsureValidWinFrameInfo();
- MCWinFrameInfo *Frame = new MCWinFrameInfo;
- Frame->Begin = getContext().CreateTempSymbol();
- Frame->Function = CurrentWinFrameInfo->Function;
- Frame->ChainedParent = CurrentWinFrameInfo;
- EmitLabel(Frame->Begin);
- WinFrameInfos.push_back(Frame);
+
+ MCSymbol *StartProc = getContext().CreateTempSymbol();
+ EmitLabel(StartProc);
+
+ WinFrameInfos.push_back(new WinEH::FrameInfo(CurrentWinFrameInfo->Function,
+ StartProc, CurrentWinFrameInfo));
CurrentWinFrameInfo = WinFrameInfos.back();
}
EnsureValidWinFrameInfo();
if (!CurrentWinFrameInfo->ChainedParent)
report_fatal_error("End of a chained region outside a chained region!");
- CurrentWinFrameInfo->End = getContext().CreateTempSymbol();
- EmitLabel(CurrentWinFrameInfo->End);
- CurrentWinFrameInfo = CurrentWinFrameInfo->ChainedParent;
+
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+
+ CurrentWinFrameInfo->End = Label;
+ CurrentWinFrameInfo =
+ const_cast<WinEH::FrameInfo *>(CurrentWinFrameInfo->ChainedParent);
}
void MCStreamer::EmitWinEHHandler(const MCSymbol *Sym, bool Unwind,
void MCStreamer::EmitWinCFIPushReg(unsigned Register) {
EnsureValidWinFrameInfo();
+
MCSymbol *Label = getContext().CreateTempSymbol();
- MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
EmitLabel(Label);
+
+ WinEH::Instruction Inst = Win64EH::Instruction::PushNonVol(Label, Register);
CurrentWinFrameInfo->Instructions.push_back(Inst);
}
report_fatal_error("Misaligned frame pointer offset!");
if (Offset > 240)
report_fatal_error("Frame offset must be less than or equal to 240!");
+
MCSymbol *Label = getContext().CreateTempSymbol();
- MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
EmitLabel(Label);
+
+ WinEH::Instruction Inst =
+ Win64EH::Instruction::SetFPReg(Label, Register, Offset);
CurrentWinFrameInfo->LastFrameInst = CurrentWinFrameInfo->Instructions.size();
CurrentWinFrameInfo->Instructions.push_back(Inst);
}
report_fatal_error("Allocation size must be non-zero!");
if (Size & 7)
report_fatal_error("Misaligned stack allocation!");
+
MCSymbol *Label = getContext().CreateTempSymbol();
- MCWin64EHInstruction Inst(Label, Size);
EmitLabel(Label);
+
+ WinEH::Instruction Inst = Win64EH::Instruction::Alloc(Label, Size);
CurrentWinFrameInfo->Instructions.push_back(Inst);
}
EnsureValidWinFrameInfo();
if (Offset & 7)
report_fatal_error("Misaligned saved register offset!");
+
MCSymbol *Label = getContext().CreateTempSymbol();
- MCWin64EHInstruction Inst(
- Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
- Label, Register, Offset);
EmitLabel(Label);
+
+ WinEH::Instruction Inst =
+ Win64EH::Instruction::SaveNonVol(Label, Register, Offset);
CurrentWinFrameInfo->Instructions.push_back(Inst);
}
EnsureValidWinFrameInfo();
if (Offset & 0x0F)
report_fatal_error("Misaligned saved vector register offset!");
+
MCSymbol *Label = getContext().CreateTempSymbol();
- MCWin64EHInstruction Inst(
- Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
- Label, Register, Offset);
EmitLabel(Label);
+
+ WinEH::Instruction Inst =
+ Win64EH::Instruction::SaveXMM(Label, Register, Offset);
CurrentWinFrameInfo->Instructions.push_back(Inst);
}
EnsureValidWinFrameInfo();
if (CurrentWinFrameInfo->Instructions.size() > 0)
report_fatal_error("If present, PushMachFrame must be the first UOP");
+
MCSymbol *Label = getContext().CreateTempSymbol();
- MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code);
EmitLabel(Label);
+
+ WinEH::Instruction Inst = Win64EH::Instruction::PushMachFrame(Label, Code);
CurrentWinFrameInfo->Instructions.push_back(Inst);
}
void MCStreamer::EmitWinCFIEndProlog() {
EnsureValidWinFrameInfo();
- CurrentWinFrameInfo->PrologEnd = getContext().CreateTempSymbol();
- EmitLabel(CurrentWinFrameInfo->PrologEnd);
+
+ MCSymbol *Label = getContext().CreateTempSymbol();
+ EmitLabel(Label);
+
+ CurrentWinFrameInfo->PrologEnd = Label;
}
void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
}
void MCStreamer::EmitWindowsUnwindTables() {
- if (!getNumWinFrameInfos())
- return;
-
- MCWin64EHUnwindEmitter::Emit(*this);
}
void MCStreamer::Finish() {
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