mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-03 14:21:30 +00:00
91c39aa628
This completes the refactoring of RecordStreamer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211727 91177308-0d34-0410-b5e6-96231b3b80d8
689 lines
23 KiB
C++
689 lines
23 KiB
C++
//===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/MC/MCAsmBackend.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCObjectWriter.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/LEB128.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdlib>
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using namespace llvm;
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// Pin the vtables to this file.
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MCTargetStreamer::~MCTargetStreamer() {}
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MCTargetStreamer::MCTargetStreamer(MCStreamer &S) : Streamer(S) {
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S.setTargetStreamer(this);
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}
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void MCTargetStreamer::emitLabel(MCSymbol *Symbol) {}
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void MCTargetStreamer::finish() {}
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void MCTargetStreamer::emitAssignment(MCSymbol *Symbol, const MCExpr *Value) {}
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MCStreamer::MCStreamer(MCContext &Ctx)
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: Context(Ctx), CurrentW64UnwindInfo(nullptr) {
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SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
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}
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MCStreamer::~MCStreamer() {
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for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
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delete W64UnwindInfos[i];
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}
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void MCStreamer::reset() {
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for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i)
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delete W64UnwindInfos[i];
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W64UnwindInfos.clear();
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CurrentW64UnwindInfo = nullptr;
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SectionStack.clear();
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SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
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}
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const MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context,
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const MCSymbol *A,
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const MCSymbol *B) {
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MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
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const MCExpr *ARef =
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MCSymbolRefExpr::Create(A, Variant, Context);
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const MCExpr *BRef =
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MCSymbolRefExpr::Create(B, Variant, Context);
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const MCExpr *AddrDelta =
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MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context);
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return AddrDelta;
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}
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const MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) {
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assert(!isa<MCSymbolRefExpr>(Expr));
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if (Context.getAsmInfo()->hasAggressiveSymbolFolding())
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return Expr;
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MCSymbol *ABS = Context.CreateTempSymbol();
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EmitAssignment(ABS, Expr);
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return MCSymbolRefExpr::Create(ABS, Context);
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}
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raw_ostream &MCStreamer::GetCommentOS() {
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// By default, discard comments.
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return nulls();
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}
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void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
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void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
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for (std::vector<MCDwarfFrameInfo>::iterator I = FrameInfos.begin(),
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E = FrameInfos.end(); I != E; ++I)
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I->CompactUnwindEncoding =
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(MAB ? MAB->generateCompactUnwindEncoding(I->Instructions) : 0);
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}
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void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
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const MCSymbol *Label, int PointerSize) {
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// emit the sequence to set the address
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EmitIntValue(dwarf::DW_LNS_extended_op, 1);
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EmitULEB128IntValue(PointerSize + 1);
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EmitIntValue(dwarf::DW_LNE_set_address, 1);
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EmitSymbolValue(Label, PointerSize);
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// emit the sequence for the LineDelta (from 1) and a zero address delta.
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MCDwarfLineAddr::Emit(this, LineDelta, 0);
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}
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/// EmitIntValue - Special case of EmitValue that avoids the client having to
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/// pass in a MCExpr for constant integers.
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void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
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assert(Size <= 8 && "Invalid size");
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assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) &&
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"Invalid size");
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char buf[8];
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const bool isLittleEndian = Context.getAsmInfo()->isLittleEndian();
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for (unsigned i = 0; i != Size; ++i) {
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unsigned index = isLittleEndian ? i : (Size - i - 1);
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buf[i] = uint8_t(Value >> (index * 8));
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}
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EmitBytes(StringRef(buf, Size));
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}
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/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
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/// client having to pass in a MCExpr for constant integers.
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void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned Padding) {
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SmallString<128> Tmp;
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raw_svector_ostream OSE(Tmp);
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encodeULEB128(Value, OSE, Padding);
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EmitBytes(OSE.str());
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}
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/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
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/// client having to pass in a MCExpr for constant integers.
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void MCStreamer::EmitSLEB128IntValue(int64_t Value) {
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SmallString<128> Tmp;
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raw_svector_ostream OSE(Tmp);
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encodeSLEB128(Value, OSE);
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EmitBytes(OSE.str());
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}
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void MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size) {
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const MCExpr *ABS = ForceExpAbs(Value);
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EmitValue(ABS, Size);
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}
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void MCStreamer::EmitValue(const MCExpr *Value, unsigned Size,
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const SMLoc &Loc) {
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EmitValueImpl(Value, Size, Loc);
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}
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void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size) {
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EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size);
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}
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void MCStreamer::EmitGPRel64Value(const MCExpr *Value) {
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report_fatal_error("unsupported directive in streamer");
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}
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void MCStreamer::EmitGPRel32Value(const MCExpr *Value) {
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report_fatal_error("unsupported directive in streamer");
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}
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/// EmitFill - Emit NumBytes bytes worth of the value specified by
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/// FillValue. This implements directives such as '.space'.
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void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
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const MCExpr *E = MCConstantExpr::Create(FillValue, getContext());
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for (uint64_t i = 0, e = NumBytes; i != e; ++i)
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EmitValue(E, 1);
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}
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/// The implementation in this class just redirects to EmitFill.
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void MCStreamer::EmitZeros(uint64_t NumBytes) {
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EmitFill(NumBytes, 0);
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}
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unsigned MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
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StringRef Directory,
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StringRef Filename, unsigned CUID) {
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return getContext().GetDwarfFile(Directory, Filename, FileNo, CUID);
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}
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void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
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unsigned Column, unsigned Flags,
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unsigned Isa,
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unsigned Discriminator,
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StringRef FileName) {
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getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa,
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Discriminator);
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}
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MCSymbol *MCStreamer::getDwarfLineTableSymbol(unsigned CUID) {
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MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
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if (!Table.getLabel()) {
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StringRef Prefix = Context.getAsmInfo()->getPrivateGlobalPrefix();
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Table.setLabel(
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Context.GetOrCreateSymbol(Prefix + "line_table_start" + Twine(CUID)));
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}
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return Table.getLabel();
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}
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MCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() {
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if (FrameInfos.empty())
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return nullptr;
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return &FrameInfos.back();
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}
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void MCStreamer::EnsureValidFrame() {
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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if (!CurFrame || CurFrame->End)
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report_fatal_error("No open frame");
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}
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void MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
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MCSymbol *EHSymbol) {
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}
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void MCStreamer::InitSections() {
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SwitchSection(getContext().getObjectFileInfo()->getTextSection());
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}
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void MCStreamer::AssignSection(MCSymbol *Symbol, const MCSection *Section) {
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if (Section)
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Symbol->setSection(*Section);
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else
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Symbol->setUndefined();
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// As we emit symbols into a section, track the order so that they can
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// be sorted upon later. Zero is reserved to mean 'unemitted'.
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SymbolOrdering[Symbol] = 1 + SymbolOrdering.size();
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}
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void MCStreamer::EmitLabel(MCSymbol *Symbol) {
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assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
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assert(getCurrentSection().first && "Cannot emit before setting section!");
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AssignSection(Symbol, getCurrentSection().first);
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MCTargetStreamer *TS = getTargetStreamer();
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if (TS)
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TS->emitLabel(Symbol);
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}
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void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
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EnsureValidFrame();
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->CompactUnwindEncoding = CompactUnwindEncoding;
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}
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void MCStreamer::EmitCFISections(bool EH, bool Debug) {
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assert(EH || Debug);
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}
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void MCStreamer::EmitCFIStartProc(bool IsSimple) {
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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if (CurFrame && !CurFrame->End)
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report_fatal_error("Starting a frame before finishing the previous one!");
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MCDwarfFrameInfo Frame;
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Frame.IsSimple = IsSimple;
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EmitCFIStartProcImpl(Frame);
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FrameInfos.push_back(Frame);
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}
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void MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) {
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}
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void MCStreamer::EmitCFIEndProc() {
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EnsureValidFrame();
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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EmitCFIEndProcImpl(*CurFrame);
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}
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void MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
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// Put a dummy non-null value in Frame.End to mark that this frame has been
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// closed.
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Frame.End = (MCSymbol *) 1;
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}
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MCSymbol *MCStreamer::EmitCFICommon() {
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EnsureValidFrame();
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MCSymbol *Label = getContext().CreateTempSymbol();
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EmitLabel(Label);
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return Label;
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}
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void MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createDefCfa(Label, Register, Offset);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createDefCfaOffset(Label, Offset);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createAdjustCfaOffset(Label, Adjustment);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIDefCfaRegister(int64_t Register) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createDefCfaRegister(Label, Register);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createOffset(Label, Register, Offset);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createRelOffset(Label, Register, Offset);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIPersonality(const MCSymbol *Sym,
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unsigned Encoding) {
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EnsureValidFrame();
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Personality = Sym;
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CurFrame->PersonalityEncoding = Encoding;
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}
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void MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) {
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EnsureValidFrame();
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Lsda = Sym;
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CurFrame->LsdaEncoding = Encoding;
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}
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void MCStreamer::EmitCFIRememberState() {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction = MCCFIInstruction::createRememberState(Label);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIRestoreState() {
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// FIXME: Error if there is no matching cfi_remember_state.
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction = MCCFIInstruction::createRestoreState(Label);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFISameValue(int64_t Register) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createSameValue(Label, Register);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIRestore(int64_t Register) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createRestore(Label, Register);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIEscape(StringRef Values) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction = MCCFIInstruction::createEscape(Label, Values);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFISignalFrame() {
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EnsureValidFrame();
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->IsSignalFrame = true;
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}
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void MCStreamer::EmitCFIUndefined(int64_t Register) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createUndefined(Label, Register);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIRegister(int64_t Register1, int64_t Register2) {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createRegister(Label, Register1, Register2);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::EmitCFIWindowSave() {
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MCSymbol *Label = EmitCFICommon();
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MCCFIInstruction Instruction =
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MCCFIInstruction::createWindowSave(Label);
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MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
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CurFrame->Instructions.push_back(Instruction);
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}
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void MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) {
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W64UnwindInfos.push_back(Frame);
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CurrentW64UnwindInfo = W64UnwindInfos.back();
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}
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void MCStreamer::EnsureValidW64UnwindInfo() {
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MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
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if (!CurFrame || CurFrame->End)
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report_fatal_error("No open Win64 EH frame function!");
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}
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void MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
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MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
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if (CurFrame && !CurFrame->End)
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report_fatal_error("Starting a function before ending the previous one!");
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MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
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Frame->Begin = getContext().CreateTempSymbol();
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Frame->Function = Symbol;
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EmitLabel(Frame->Begin);
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setCurrentW64UnwindInfo(Frame);
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}
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void MCStreamer::EmitWin64EHEndProc() {
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EnsureValidW64UnwindInfo();
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MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
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if (CurFrame->ChainedParent)
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report_fatal_error("Not all chained regions terminated!");
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CurFrame->End = getContext().CreateTempSymbol();
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EmitLabel(CurFrame->End);
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}
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void MCStreamer::EmitWin64EHStartChained() {
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EnsureValidW64UnwindInfo();
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MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo;
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MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
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Frame->Begin = getContext().CreateTempSymbol();
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Frame->Function = CurFrame->Function;
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Frame->ChainedParent = CurFrame;
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EmitLabel(Frame->Begin);
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setCurrentW64UnwindInfo(Frame);
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}
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void MCStreamer::EmitWin64EHEndChained() {
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EnsureValidW64UnwindInfo();
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MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo;
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if (!CurFrame->ChainedParent)
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report_fatal_error("End of a chained region outside a chained region!");
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CurFrame->End = getContext().CreateTempSymbol();
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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!");
|
|
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);
|
|
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) {
|
|
}
|
|
|
|
void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) {
|
|
}
|
|
|
|
/// 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) {
|
|
visitUsedExpr(*Value);
|
|
Symbol->setVariableValue(Value);
|
|
|
|
MCTargetStreamer *TS = getTargetStreamer();
|
|
if (TS)
|
|
TS->emitAssignment(Symbol, Value);
|
|
}
|
|
|
|
void MCStreamer::visitUsedSymbol(const MCSymbol &Sym) {
|
|
}
|
|
|
|
void MCStreamer::visitUsedExpr(const MCExpr &Expr) {
|
|
switch (Expr.getKind()) {
|
|
case MCExpr::Target:
|
|
cast<MCTargetExpr>(Expr).visitUsedExpr(*this);
|
|
break;
|
|
|
|
case MCExpr::Constant:
|
|
break;
|
|
|
|
case MCExpr::Binary: {
|
|
const MCBinaryExpr &BE = cast<MCBinaryExpr>(Expr);
|
|
visitUsedExpr(*BE.getLHS());
|
|
visitUsedExpr(*BE.getRHS());
|
|
break;
|
|
}
|
|
|
|
case MCExpr::SymbolRef:
|
|
visitUsedSymbol(cast<MCSymbolRefExpr>(Expr).getSymbol());
|
|
break;
|
|
|
|
case MCExpr::Unary:
|
|
visitUsedExpr(*cast<MCUnaryExpr>(Expr).getSubExpr());
|
|
break;
|
|
}
|
|
}
|
|
|
|
void MCStreamer::EmitInstruction(const MCInst &Inst,
|
|
const MCSubtargetInfo &STI) {
|
|
// Scan for values.
|
|
for (unsigned i = Inst.getNumOperands(); i--;)
|
|
if (Inst.getOperand(i).isExpr())
|
|
visitUsedExpr(*Inst.getOperand(i).getExpr());
|
|
}
|
|
|
|
void MCStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {}
|
|
void MCStreamer::EmitThumbFunc(MCSymbol *Func) {}
|
|
void MCStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {}
|
|
void MCStreamer::BeginCOFFSymbolDef(const MCSymbol *Symbol) {}
|
|
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::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
|
|
unsigned ByteAlignment) {}
|
|
void MCStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
|
|
uint64_t Size, unsigned ByteAlignment) {}
|
|
void MCStreamer::ChangeSection(const MCSection *, const MCExpr *) {}
|
|
void MCStreamer::EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {}
|
|
void MCStreamer::EmitBytes(StringRef Data) {}
|
|
void MCStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
|
|
const SMLoc &Loc) {
|
|
visitUsedExpr(*Value);
|
|
}
|
|
void MCStreamer::EmitULEB128Value(const MCExpr *Value) {}
|
|
void MCStreamer::EmitSLEB128Value(const MCExpr *Value) {}
|
|
void MCStreamer::EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
|
|
unsigned ValueSize,
|
|
unsigned MaxBytesToEmit) {}
|
|
void MCStreamer::EmitCodeAlignment(unsigned ByteAlignment,
|
|
unsigned MaxBytesToEmit) {}
|
|
bool MCStreamer::EmitValueToOffset(const MCExpr *Offset, unsigned char Value) {
|
|
return false;
|
|
}
|
|
void MCStreamer::EmitBundleAlignMode(unsigned AlignPow2) {}
|
|
void MCStreamer::EmitBundleLock(bool AlignToEnd) {}
|
|
void MCStreamer::FinishImpl() {}
|
|
void MCStreamer::EmitBundleUnlock() {}
|