mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-15 07:59:50 +00:00
23f2d7ae23
Now that the asm streamer doesn't use it, the MCStreamer doesn't need to know about it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208562 91177308-0d34-0410-b5e6-96231b3b80d8
638 lines
21 KiB
C++
638 lines
21 KiB
C++
//===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/Twine.h"
|
|
#include "llvm/MC/MCAsmBackend.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCObjectFileInfo.h"
|
|
#include "llvm/MC/MCObjectWriter.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/LEB128.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include <cstdlib>
|
|
using namespace llvm;
|
|
|
|
// Pin the vtables to this file.
|
|
MCTargetStreamer::~MCTargetStreamer() {}
|
|
|
|
MCTargetStreamer::MCTargetStreamer(MCStreamer &S) : Streamer(S) {
|
|
S.setTargetStreamer(this);
|
|
}
|
|
|
|
void MCTargetStreamer::emitLabel(MCSymbol *Symbol) {}
|
|
|
|
void MCTargetStreamer::finish() {}
|
|
|
|
void MCTargetStreamer::emitAssignment(MCSymbol *Symbol, const MCExpr *Value) {}
|
|
|
|
MCStreamer::MCStreamer(MCContext &Ctx)
|
|
: Context(Ctx), CurrentW64UnwindInfo(nullptr), LastSymbol(nullptr) {
|
|
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
|
|
}
|
|
|
|
MCStreamer::~MCStreamer() {
|
|
for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
|
|
delete W64UnwindInfos[i];
|
|
}
|
|
|
|
void MCStreamer::reset() {
|
|
for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
|
|
delete W64UnwindInfos[i];
|
|
W64UnwindInfos.clear();
|
|
CurrentW64UnwindInfo = nullptr;
|
|
LastSymbol = nullptr;
|
|
SectionStack.clear();
|
|
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();
|
|
}
|
|
|
|
void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
|
|
|
|
void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
|
|
for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
|
|
E = FrameInfos.end(); I != E; ++I)
|
|
I->CompactUnwindEncoding =
|
|
(MAB ? MAB->generateCompactUnwindEncoding(I->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) {
|
|
assert(Size <= 8 && "Invalid size");
|
|
assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
|
|
"Invalid size");
|
|
char buf[8];
|
|
const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
|
|
for (unsigned i = 0; i != Size; ++i) {
|
|
unsigned index = isLittleEndian ? i : (Size - i - 1);
|
|
buf[i] = uint8_t(Value >> (index * 8));
|
|
}
|
|
EmitBytes(StringRef(buf, Size));
|
|
}
|
|
|
|
/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
|
|
/// client having to pass in a MCExpr for constant integers.
|
|
void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
|
|
SmallString<128> Tmp;
|
|
raw_svector_ostream OSE(Tmp);
|
|
encodeULEB128(Value, OSE, Padding);
|
|
EmitBytes(OSE.str());
|
|
}
|
|
|
|
/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
|
|
/// client having to pass in a MCExpr for constant integers.
|
|
void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
|
|
SmallString<128> Tmp;
|
|
raw_svector_ostream OSE(Tmp);
|
|
encodeSLEB128(Value, OSE);
|
|
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::EmitGPRel64Value(const MCExpr *Value) {
|
|
report_fatal_error("unsupported directive in streamer");
|
|
}
|
|
|
|
void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
|
|
report_fatal_error("unsupported directive in streamer");
|
|
}
|
|
|
|
/// 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());
|
|
for (uint64_t i = 0, e = NumBytes; i != e; ++i)
|
|
EmitValue(E, 1);
|
|
}
|
|
|
|
/// The implementation in this class just redirects to EmitFill.
|
|
void MCStreamer::EmitZeros(uint64_t NumBytes) {
|
|
EmitFill(NumBytes, 0);
|
|
}
|
|
|
|
unsigned MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
|
|
StringRef Directory,
|
|
StringRef Filename, unsigned CUID) {
|
|
return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID);
|
|
}
|
|
|
|
void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
|
|
unsigned Column, unsigned Flags,
|
|
unsigned Isa,
|
|
unsigned Discriminator,
|
|
StringRef FileName) {
|
|
getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
|
|
Discriminator);
|
|
}
|
|
|
|
MCSymbol *MCStreamer::getDwarfLineTableSymbol(unsigned CUID) {
|
|
MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
|
|
if (!Table.getLabel()) {
|
|
StringRef Prefix = Context.getAsmInfo()->getPrivateGlobalPrefix();
|
|
Table.setLabel(
|
|
Context.GetOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
|
|
}
|
|
return Table.getLabel();
|
|
}
|
|
|
|
MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
|
|
if (FrameInfos.empty())
|
|
return nullptr;
|
|
return &FrameInfos.back();
|
|
}
|
|
|
|
void MCStreamer::EnsureValidFrame() {
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
if (!CurFrame || CurFrame->End)
|
|
report_fatal_error("No open frame");
|
|
}
|
|
|
|
void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
|
|
MCSymbol *EHSymbol) {
|
|
}
|
|
|
|
void MCStreamer::InitSections() {
|
|
SwitchSection(getContext().getObjectFileInfo()->getTextSection());
|
|
}
|
|
|
|
void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
|
|
if (Section)
|
|
Symbol->setSection(*Section);
|
|
else
|
|
Symbol->setUndefined();
|
|
|
|
// As we emit symbols into a section, track the order so that they can
|
|
// be sorted upon later. Zero is reserved to mean 'unemitted'.
|
|
SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
|
|
}
|
|
|
|
void MCStreamer::EmitLabel(MCSymbol *Symbol) {
|
|
assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
|
|
assert(getCurrentSection().first && "Cannot emit before setting section!");
|
|
AssignSection(Symbol, getCurrentSection().first);
|
|
LastSymbol = Symbol;
|
|
|
|
MCTargetStreamer *TS = getTargetStreamer();
|
|
if (TS)
|
|
TS->emitLabel(Symbol);
|
|
}
|
|
|
|
void MCStreamer::EmitDebugLabel(MCSymbol *Symbol) {
|
|
assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
|
|
assert(getCurrentSection().first && "Cannot emit before setting section!");
|
|
AssignSection(Symbol, getCurrentSection().first);
|
|
LastSymbol = Symbol;
|
|
}
|
|
|
|
void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
|
|
EnsureValidFrame();
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
|
|
}
|
|
|
|
void MCStreamer::EmitCFISections(bool EH, bool Debug) {
|
|
assert(EH || Debug);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIStartProc(bool IsSimple) {
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
if (CurFrame && !CurFrame->End)
|
|
report_fatal_error("Starting a frame before finishing the previous one!");
|
|
|
|
MCDwarfFrameInfo Frame;
|
|
Frame.IsSimple = IsSimple;
|
|
EmitCFIStartProcImpl(Frame);
|
|
|
|
FrameInfos.push_back(Frame);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
|
|
}
|
|
|
|
void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
|
|
// Report an error if we haven't seen a symbol yet where we'd bind
|
|
// .cfi_startproc.
|
|
if (!LastSymbol)
|
|
report_fatal_error("No symbol to start a frame");
|
|
Frame.Function = LastSymbol;
|
|
// We need to create a local symbol to avoid relocations.
|
|
Frame.Begin = getContext().CreateTempSymbol();
|
|
EmitLabel(Frame.Begin);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIEndProc() {
|
|
EnsureValidFrame();
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
EmitCFIEndProcImpl(*CurFrame);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
|
|
}
|
|
|
|
void MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) {
|
|
Frame.End = getContext().CreateTempSymbol();
|
|
EmitLabel(Frame.End);
|
|
}
|
|
|
|
MCSymbol *MCStreamer::EmitCFICommon() {
|
|
EnsureValidFrame();
|
|
MCSymbol *Label = getContext().CreateTempSymbol();
|
|
EmitLabel(Label);
|
|
return Label;
|
|
}
|
|
|
|
void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createDefCfa(Label, Register, Offset);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createDefCfaOffset(Label, Offset);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createDefCfaRegister(Label, Register);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createOffset(Label, Register, Offset);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createRelOffset(Label, Register, Offset);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
|
|
unsigned Encoding) {
|
|
EnsureValidFrame();
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Personality = Sym;
|
|
CurFrame->PersonalityEncoding = Encoding;
|
|
}
|
|
|
|
void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
|
|
EnsureValidFrame();
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Lsda = Sym;
|
|
CurFrame->LsdaEncoding = Encoding;
|
|
}
|
|
|
|
void MCStreamer::EmitCFIRememberState() {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIRestoreState() {
|
|
// FIXME: Error if there is no matching cfi_remember_state.
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFISameValue(int64_t Register) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createSameValue(Label, Register);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIRestore(int64_t Register) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createRestore(Label, Register);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIEscape(StringRef Values) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFISignalFrame() {
|
|
EnsureValidFrame();
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->IsSignalFrame = true;
|
|
}
|
|
|
|
void MCStreamer::EmitCFIUndefined(int64_t Register) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createUndefined(Label, Register);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createRegister(Label, Register1, Register2);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::EmitCFIWindowSave() {
|
|
MCSymbol *Label = EmitCFICommon();
|
|
MCCFIInstruction Instruction =
|
|
MCCFIInstruction::createWindowSave(Label);
|
|
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
|
|
CurFrame->Instructions.push_back(Instruction);
|
|
}
|
|
|
|
void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
|
|
W64UnwindInfos.push_back(Frame);
|
|
CurrentW64UnwindInfo = W64UnwindInfos.back();
|
|
}
|
|
|
|
void MCStreamer::EnsureValidW64UnwindInfo() {
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (!CurFrame || CurFrame->End)
|
|
report_fatal_error("No open Win64 EH frame function!");
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (CurFrame && !CurFrame->End)
|
|
report_fatal_error("Starting a function before ending the previous one!");
|
|
MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
|
|
Frame->Begin = getContext().CreateTempSymbol();
|
|
Frame->Function = Symbol;
|
|
EmitLabel(Frame->Begin);
|
|
setCurrentW64UnwindInfo(Frame);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHEndProc() {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (CurFrame->ChainedParent)
|
|
report_fatal_error("Not all chained regions terminated!");
|
|
CurFrame->End = getContext().CreateTempSymbol();
|
|
EmitLabel(CurFrame->End);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHStartChained() {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
Frame->Begin = getContext().CreateTempSymbol();
|
|
Frame->Function = CurFrame->Function;
|
|
Frame->ChainedParent = CurFrame;
|
|
EmitLabel(Frame->Begin);
|
|
setCurrentW64UnwindInfo(Frame);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHEndChained() {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (!CurFrame->ChainedParent)
|
|
report_fatal_error("End of a chained region outside a chained region!");
|
|
CurFrame->End = getContext().CreateTempSymbol();
|
|
EmitLabel(CurFrame->End);
|
|
CurrentW64UnwindInfo = CurFrame->ChainedParent;
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
|
|
bool Except) {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (CurFrame->ChainedParent)
|
|
report_fatal_error("Chained unwind areas can't have handlers!");
|
|
CurFrame->ExceptionHandler = Sym;
|
|
if (!Except && !Unwind)
|
|
report_fatal_error("Don't know what kind of handler this is!");
|
|
if (Unwind)
|
|
CurFrame->HandlesUnwind = true;
|
|
if (Except)
|
|
CurFrame->HandlesExceptions = true;
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHHandlerData() {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (CurFrame->ChainedParent)
|
|
report_fatal_error("Chained unwind areas can't have handlers!");
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHPushReg(unsigned Register) {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
MCSymbol *Label = getContext().CreateTempSymbol();
|
|
MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register);
|
|
EmitLabel(Label);
|
|
CurFrame->Instructions.push_back(Inst);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (CurFrame->LastFrameInst >= 0)
|
|
report_fatal_error("Frame register and offset already specified!");
|
|
if (Offset & 0x0F)
|
|
report_fatal_error("Misaligned frame pointer offset!");
|
|
MCSymbol *Label = getContext().CreateTempSymbol();
|
|
MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
|
|
EmitLabel(Label);
|
|
CurFrame->LastFrameInst = CurFrame->Instructions.size();
|
|
CurFrame->Instructions.push_back(Inst);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHAllocStack(unsigned Size) {
|
|
EnsureValidW64UnwindInfo();
|
|
if (Size & 7)
|
|
report_fatal_error("Misaligned stack allocation!");
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
MCSymbol *Label = getContext().CreateTempSymbol();
|
|
MCWin64EHInstruction Inst(Label, Size);
|
|
EmitLabel(Label);
|
|
CurFrame->Instructions.push_back(Inst);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) {
|
|
EnsureValidW64UnwindInfo();
|
|
if (Offset & 7)
|
|
report_fatal_error("Misaligned saved register offset!");
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
MCSymbol *Label = getContext().CreateTempSymbol();
|
|
MCWin64EHInstruction Inst(
|
|
Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol,
|
|
Label, Register, Offset);
|
|
EmitLabel(Label);
|
|
CurFrame->Instructions.push_back(Inst);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) {
|
|
EnsureValidW64UnwindInfo();
|
|
if (Offset & 0x0F)
|
|
report_fatal_error("Misaligned saved vector register offset!");
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
MCSymbol *Label = getContext().CreateTempSymbol();
|
|
MCWin64EHInstruction Inst(
|
|
Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128,
|
|
Label, Register, Offset);
|
|
EmitLabel(Label);
|
|
CurFrame->Instructions.push_back(Inst);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHPushFrame(bool Code) {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
if (CurFrame->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);
|
|
CurFrame->Instructions.push_back(Inst);
|
|
}
|
|
|
|
void MCStreamer::EmitWin64EHEndProlog() {
|
|
EnsureValidW64UnwindInfo();
|
|
MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
|
|
CurFrame->PrologEnd = getContext().CreateTempSymbol();
|
|
EmitLabel(CurFrame->PrologEnd);
|
|
}
|
|
|
|
void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) {
|
|
llvm_unreachable("This file format doesn't support this directive");
|
|
}
|
|
|
|
void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
|
|
llvm_unreachable("This file format doesn't support this directive");
|
|
}
|
|
|
|
/// 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 MCStreamer::EmitRawTextImpl(StringRef String) {
|
|
errs() << "EmitRawText called on an MCStreamer that doesn't support it, "
|
|
" something must not be fully mc'ized\n";
|
|
abort();
|
|
}
|
|
|
|
void MCStreamer::EmitRawText(const Twine &T) {
|
|
SmallString<128> Str;
|
|
EmitRawTextImpl(T.toStringRef(Str));
|
|
}
|
|
|
|
void MCStreamer::EmitW64Tables() {
|
|
if (!getNumW64UnwindInfos())
|
|
return;
|
|
|
|
MCWin64EHUnwindEmitter::Emit(*this);
|
|
}
|
|
|
|
void MCStreamer::Finish() {
|
|
if (!FrameInfos.empty() && !FrameInfos.back().End)
|
|
report_fatal_error("Unfinished frame!");
|
|
|
|
MCTargetStreamer *TS = getTargetStreamer();
|
|
if (TS)
|
|
TS->finish();
|
|
|
|
FinishImpl();
|
|
}
|
|
|
|
void MCStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
|
|
Symbol->setVariableValue(Value);
|
|
|
|
MCTargetStreamer *TS = getTargetStreamer();
|
|
if (TS)
|
|
TS->emitAssignment(Symbol, Value);
|
|
}
|