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This patch fixes an old FIXME by creating a MCTargetStreamer interface and moving the target specific functions for ARM, Mips and PPC to it. The ARM streamer is still declared in a common place because it is used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are completely hidden in the corresponding Target directories. I will send an email to llvmdev with instructions on how to use this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192181 91177308-0d34-0410-b5e6-96231b3b80d8
729 lines
28 KiB
C++
729 lines
28 KiB
C++
//===- MCStreamer.h - High-level Streaming Machine Code Output --*- C++ -*-===//
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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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//
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// This file declares the MCStreamer class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCSTREAMER_H
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#define LLVM_MC_MCSTREAMER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCDirectives.h"
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#include "llvm/MC/MCDwarf.h"
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#include "llvm/MC/MCWin64EH.h"
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#include "llvm/Support/DataTypes.h"
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#include <string>
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namespace llvm {
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class MCAsmBackend;
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class MCCodeEmitter;
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class MCContext;
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class MCExpr;
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class MCInst;
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class MCInstPrinter;
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class MCSection;
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class MCStreamer;
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class MCSymbol;
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class StringRef;
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class Twine;
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class raw_ostream;
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class formatted_raw_ostream;
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typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair;
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/// Target specific streamer interface. This is used so that targets can
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/// implement support for target specific assembly directives.
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///
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/// If target foo wants to use this, it should implement 3 classes:
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/// * FooTargetStreamer : public MCTargetStreamer
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/// * FooTargetAsmSreamer : public FooTargetStreamer
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/// * FooTargetELFStreamer : public FooTargetStreamer
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///
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/// FooTargetStreamer should have a pure virtual method for each directive. For
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/// example, for a ".bar symbol_name" directive, it should have
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/// virtual emitBar(const MCSymbol &Symbol) = 0;
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///
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/// The FooTargetAsmSreamer and FooTargetELFStreamer classes implement the
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/// method. The assembly streamer just prints ".bar symbol_name". The object
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/// streamer does whatever is needed to implement .bar in the object file.
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///
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/// In the assembly printer and parser the target streamer can be used by
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/// calling getTargetStreamer and casting it to FooTargetStreamer:
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///
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/// MCTargetStreamer &TS = OutStreamer.getTargetStreamer();
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/// FooTargetStreamer &ATS = static_cast<FooTargetStreamer &>(TS);
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///
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/// The base classes FooTargetAsmSreamer and FooTargetELFStreamer should *never*
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/// be treated differently. Callers should always talk to a FooTargetStreamer.
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class MCTargetStreamer {
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protected:
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OwningPtr<MCStreamer> Streamer;
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public:
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virtual ~MCTargetStreamer();
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void setStreamer(MCStreamer *S) { Streamer.reset(S); }
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};
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// FIXME: declared here because it is used from
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// lib/CodeGen/AsmPrinter/ARMException.cpp.
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class ARMTargetStreamer : public MCTargetStreamer {
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public:
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virtual void emitFnStart() = 0;
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virtual void emitFnEnd() = 0;
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virtual void emitCantUnwind() = 0;
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virtual void emitPersonality(const MCSymbol *Personality) = 0;
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virtual void emitHandlerData() = 0;
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virtual void emitSetFP(unsigned FpReg, unsigned SpReg,
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int64_t Offset = 0) = 0;
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virtual void emitPad(int64_t Offset) = 0;
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virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
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bool isVector) = 0;
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};
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/// MCStreamer - Streaming machine code generation interface. This interface
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/// is intended to provide a programatic interface that is very similar to the
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/// level that an assembler .s file provides. It has callbacks to emit bytes,
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/// handle directives, etc. The implementation of this interface retains
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/// state to know what the current section is etc.
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///
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/// There are multiple implementations of this interface: one for writing out
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/// a .s file, and implementations that write out .o files of various formats.
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///
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class MCStreamer {
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MCContext &Context;
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MCTargetStreamer *TargetStreamer;
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MCStreamer(const MCStreamer &) LLVM_DELETED_FUNCTION;
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MCStreamer &operator=(const MCStreamer &) LLVM_DELETED_FUNCTION;
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bool EmitEHFrame;
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bool EmitDebugFrame;
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std::vector<MCDwarfFrameInfo> FrameInfos;
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MCDwarfFrameInfo *getCurrentFrameInfo();
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MCSymbol *EmitCFICommon();
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void EnsureValidFrame();
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std::vector<MCWin64EHUnwindInfo *> W64UnwindInfos;
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MCWin64EHUnwindInfo *CurrentW64UnwindInfo;
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void setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame);
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void EnsureValidW64UnwindInfo();
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MCSymbol *LastSymbol;
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// SymbolOrdering - Tracks an index to represent the order
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// a symbol was emitted in. Zero means we did not emit that symbol.
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DenseMap<const MCSymbol *, unsigned> SymbolOrdering;
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/// SectionStack - This is stack of current and previous section
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/// values saved by PushSection.
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SmallVector<std::pair<MCSectionSubPair, MCSectionSubPair>, 4> SectionStack;
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bool AutoInitSections;
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protected:
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MCStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer);
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const MCExpr *BuildSymbolDiff(MCContext &Context, const MCSymbol *A,
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const MCSymbol *B);
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const MCExpr *ForceExpAbs(const MCExpr *Expr);
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void RecordProcStart(MCDwarfFrameInfo &Frame);
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virtual void EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame);
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void RecordProcEnd(MCDwarfFrameInfo &Frame);
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virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &CurFrame);
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void EmitFrames(MCAsmBackend *MAB, bool usingCFI);
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MCWin64EHUnwindInfo *getCurrentW64UnwindInfo() {
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return CurrentW64UnwindInfo;
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}
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void EmitW64Tables();
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public:
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virtual ~MCStreamer();
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/// State management
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///
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virtual void reset();
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MCContext &getContext() const { return Context; }
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MCTargetStreamer &getTargetStreamer() {
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assert(TargetStreamer);
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return *TargetStreamer;
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}
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unsigned getNumFrameInfos() { return FrameInfos.size(); }
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const MCDwarfFrameInfo &getFrameInfo(unsigned i) { return FrameInfos[i]; }
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ArrayRef<MCDwarfFrameInfo> getFrameInfos() const { return FrameInfos; }
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unsigned getNumW64UnwindInfos() { return W64UnwindInfos.size(); }
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MCWin64EHUnwindInfo &getW64UnwindInfo(unsigned i) {
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return *W64UnwindInfos[i];
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}
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void generateCompactUnwindEncodings(MCAsmBackend *MAB);
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/// @name Assembly File Formatting.
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/// @{
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/// isVerboseAsm - Return true if this streamer supports verbose assembly
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/// and if it is enabled.
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virtual bool isVerboseAsm() const { return false; }
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/// hasRawTextSupport - Return true if this asm streamer supports emitting
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/// unformatted text to the .s file with EmitRawText.
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virtual bool hasRawTextSupport() const { return false; }
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/// AddComment - Add a comment that can be emitted to the generated .s
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/// file if applicable as a QoI issue to make the output of the compiler
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/// more readable. This only affects the MCAsmStreamer, and only when
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/// verbose assembly output is enabled.
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///
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/// If the comment includes embedded \n's, they will each get the comment
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/// prefix as appropriate. The added comment should not end with a \n.
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virtual void AddComment(const Twine &T) {}
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/// GetCommentOS - Return a raw_ostream that comments can be written to.
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/// Unlike AddComment, you are required to terminate comments with \n if you
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/// use this method.
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virtual raw_ostream &GetCommentOS();
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/// AddBlankLine - Emit a blank line to a .s file to pretty it up.
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virtual void AddBlankLine() {}
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/// @}
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/// @name Symbol & Section Management
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/// @{
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/// getCurrentSection - Return the current section that the streamer is
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/// emitting code to.
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MCSectionSubPair getCurrentSection() const {
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if (!SectionStack.empty())
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return SectionStack.back().first;
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return MCSectionSubPair();
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}
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/// getPreviousSection - Return the previous section that the streamer is
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/// emitting code to.
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MCSectionSubPair getPreviousSection() const {
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if (!SectionStack.empty())
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return SectionStack.back().second;
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return MCSectionSubPair();
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}
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/// GetSymbolOrder - Returns an index to represent the order
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/// a symbol was emitted in. (zero if we did not emit that symbol)
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unsigned GetSymbolOrder(const MCSymbol *Sym) const {
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return SymbolOrdering.lookup(Sym);
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}
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/// ChangeSection - Update streamer for a new active section.
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///
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/// This is called by PopSection and SwitchSection, if the current
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/// section changes.
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virtual void ChangeSection(const MCSection *, const MCExpr *) = 0;
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/// pushSection - Save the current and previous section on the
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/// section stack.
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void PushSection() {
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SectionStack.push_back(
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std::make_pair(getCurrentSection(), getPreviousSection()));
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}
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/// popSection - Restore the current and previous section from
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/// the section stack. Calls ChangeSection as needed.
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///
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/// Returns false if the stack was empty.
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bool PopSection() {
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if (SectionStack.size() <= 1)
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return false;
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MCSectionSubPair oldSection = SectionStack.pop_back_val().first;
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MCSectionSubPair curSection = SectionStack.back().first;
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if (oldSection != curSection)
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ChangeSection(curSection.first, curSection.second);
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return true;
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}
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bool SubSection(const MCExpr *Subsection) {
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if (SectionStack.empty())
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return false;
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SwitchSection(SectionStack.back().first.first, Subsection);
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return true;
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}
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/// SwitchSection - Set the current section where code is being emitted to
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/// @p Section. This is required to update CurSection.
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///
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/// This corresponds to assembler directives like .section, .text, etc.
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void SwitchSection(const MCSection *Section, const MCExpr *Subsection = 0) {
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assert(Section && "Cannot switch to a null section!");
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MCSectionSubPair curSection = SectionStack.back().first;
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SectionStack.back().second = curSection;
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if (MCSectionSubPair(Section, Subsection) != curSection) {
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SectionStack.back().first = MCSectionSubPair(Section, Subsection);
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ChangeSection(Section, Subsection);
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}
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}
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/// SwitchSectionNoChange - Set the current section where code is being
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/// emitted to @p Section. This is required to update CurSection. This
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/// version does not call ChangeSection.
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void SwitchSectionNoChange(const MCSection *Section,
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const MCExpr *Subsection = 0) {
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assert(Section && "Cannot switch to a null section!");
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MCSectionSubPair curSection = SectionStack.back().first;
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SectionStack.back().second = curSection;
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if (MCSectionSubPair(Section, Subsection) != curSection)
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SectionStack.back().first = MCSectionSubPair(Section, Subsection);
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}
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/// Initialize the streamer.
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void InitStreamer() {
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if (AutoInitSections)
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InitSections();
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}
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/// Tell this MCStreamer to call InitSections upon initialization.
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void setAutoInitSections(bool AutoInitSections) {
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this->AutoInitSections = AutoInitSections;
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}
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/// InitSections - Create the default sections and set the initial one.
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virtual void InitSections() = 0;
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/// InitToTextSection - Create a text section and switch the streamer to it.
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virtual void InitToTextSection() = 0;
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/// AssignSection - Sets the symbol's section.
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///
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/// Each emitted symbol will be tracked in the ordering table,
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/// so we can sort on them later.
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void AssignSection(MCSymbol *Symbol, const MCSection *Section);
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/// EmitLabel - Emit a label for @p Symbol into the current section.
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///
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/// This corresponds to an assembler statement such as:
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/// foo:
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///
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/// @param Symbol - The symbol to emit. A given symbol should only be
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/// emitted as a label once, and symbols emitted as a label should never be
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/// used in an assignment.
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virtual void EmitLabel(MCSymbol *Symbol);
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virtual void EmitDebugLabel(MCSymbol *Symbol);
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virtual void EmitEHSymAttributes(const MCSymbol *Symbol, MCSymbol *EHSymbol);
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/// EmitAssemblerFlag - Note in the output the specified @p Flag.
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virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) = 0;
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/// EmitLinkerOptions - Emit the given list @p Options of strings as linker
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/// options into the output.
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virtual void EmitLinkerOptions(ArrayRef<std::string> Kind) {}
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/// EmitDataRegion - Note in the output the specified region @p Kind.
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virtual void EmitDataRegion(MCDataRegionType Kind) {}
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/// EmitThumbFunc - Note in the output that the specified @p Func is
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/// a Thumb mode function (ARM target only).
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virtual void EmitThumbFunc(MCSymbol *Func) = 0;
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/// getOrCreateSymbolData - Get symbol data for given symbol.
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virtual MCSymbolData &getOrCreateSymbolData(MCSymbol *Symbol);
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/// EmitAssignment - Emit an assignment of @p Value to @p Symbol.
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///
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/// This corresponds to an assembler statement such as:
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/// symbol = value
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///
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/// The assignment generates no code, but has the side effect of binding the
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/// value in the current context. For the assembly streamer, this prints the
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/// binding into the .s file.
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///
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/// @param Symbol - The symbol being assigned to.
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/// @param Value - The value for the symbol.
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virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) = 0;
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/// EmitWeakReference - Emit an weak reference from @p Alias to @p Symbol.
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///
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/// This corresponds to an assembler statement such as:
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/// .weakref alias, symbol
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///
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/// @param Alias - The alias that is being created.
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/// @param Symbol - The symbol being aliased.
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virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) = 0;
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/// EmitSymbolAttribute - Add the given @p Attribute to @p Symbol.
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virtual bool EmitSymbolAttribute(MCSymbol *Symbol,
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MCSymbolAttr Attribute) = 0;
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/// EmitSymbolDesc - Set the @p DescValue for the @p Symbol.
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///
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/// @param Symbol - The symbol to have its n_desc field set.
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/// @param DescValue - The value to set into the n_desc field.
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virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) = 0;
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/// BeginCOFFSymbolDef - Start emitting COFF symbol definition
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///
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/// @param Symbol - The symbol to have its External & Type fields set.
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virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) = 0;
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/// EmitCOFFSymbolStorageClass - Emit the storage class of the symbol.
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///
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/// @param StorageClass - The storage class the symbol should have.
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virtual void EmitCOFFSymbolStorageClass(int StorageClass) = 0;
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/// EmitCOFFSymbolType - Emit the type of the symbol.
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///
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/// @param Type - A COFF type identifier (see COFF::SymbolType in X86COFF.h)
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virtual void EmitCOFFSymbolType(int Type) = 0;
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/// EndCOFFSymbolDef - Marks the end of the symbol definition.
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virtual void EndCOFFSymbolDef() = 0;
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/// EmitCOFFSecRel32 - Emits a COFF section relative relocation.
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///
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/// @param Symbol - Symbol the section relative realocation should point to.
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virtual void EmitCOFFSecRel32(MCSymbol const *Symbol);
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/// EmitELFSize - Emit an ELF .size directive.
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///
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/// This corresponds to an assembler statement such as:
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/// .size symbol, expression
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///
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virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) = 0;
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/// EmitCommonSymbol - Emit a common symbol.
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///
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/// @param Symbol - The common symbol to emit.
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/// @param Size - The size of the common symbol.
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/// @param ByteAlignment - The alignment of the symbol if
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/// non-zero. This must be a power of 2.
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virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) = 0;
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/// EmitLocalCommonSymbol - Emit a local common (.lcomm) symbol.
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///
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/// @param Symbol - The common symbol to emit.
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/// @param Size - The size of the common symbol.
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/// @param ByteAlignment - The alignment of the common symbol in bytes.
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virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) = 0;
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/// EmitZerofill - Emit the zerofill section and an optional symbol.
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///
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/// @param Section - The zerofill section to create and or to put the symbol
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/// @param Symbol - The zerofill symbol to emit, if non-NULL.
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/// @param Size - The size of the zerofill symbol.
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/// @param ByteAlignment - The alignment of the zerofill symbol if
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/// non-zero. This must be a power of 2 on some targets.
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virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol = 0,
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uint64_t Size = 0, unsigned ByteAlignment = 0) = 0;
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/// EmitTBSSSymbol - Emit a thread local bss (.tbss) symbol.
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///
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/// @param Section - The thread local common section.
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/// @param Symbol - The thread local common symbol to emit.
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/// @param Size - The size of the symbol.
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/// @param ByteAlignment - The alignment of the thread local common symbol
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/// if non-zero. This must be a power of 2 on some targets.
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virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment = 0) = 0;
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/// @}
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/// @name Generating Data
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/// @{
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/// EmitBytes - Emit the bytes in \p Data into the output.
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///
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/// This is used to implement assembler directives such as .byte, .ascii,
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/// etc.
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virtual void EmitBytes(StringRef Data) = 0;
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/// EmitValue - Emit the expression @p Value into the output as a native
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/// integer of the given @p Size bytes.
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///
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/// This is used to implement assembler directives such as .word, .quad,
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/// etc.
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///
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/// @param Value - The value to emit.
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/// @param Size - The size of the integer (in bytes) to emit. This must
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/// match a native machine width.
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virtual void EmitValueImpl(const MCExpr *Value, unsigned Size) = 0;
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void EmitValue(const MCExpr *Value, unsigned Size);
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/// EmitIntValue - Special case of EmitValue that avoids the client having
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/// to pass in a MCExpr for constant integers.
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virtual void EmitIntValue(uint64_t Value, unsigned Size);
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/// EmitAbsValue - Emit the Value, but try to avoid relocations. On MachO
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/// this is done by producing
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/// foo = value
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/// .long foo
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void EmitAbsValue(const MCExpr *Value, unsigned Size);
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virtual void EmitULEB128Value(const MCExpr *Value) = 0;
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virtual void EmitSLEB128Value(const MCExpr *Value) = 0;
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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 EmitULEB128IntValue(uint64_t Value, unsigned Padding = 0);
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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 EmitSLEB128IntValue(int64_t Value);
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/// EmitSymbolValue - Special case of EmitValue that avoids the client
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/// having to pass in a MCExpr for MCSymbols.
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void EmitSymbolValue(const MCSymbol *Sym, unsigned Size);
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/// EmitGPRel64Value - Emit the expression @p Value into the output as a
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/// gprel64 (64-bit GP relative) value.
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///
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/// This is used to implement assembler directives such as .gpdword on
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/// targets that support them.
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virtual void EmitGPRel64Value(const MCExpr *Value);
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/// EmitGPRel32Value - Emit the expression @p Value into the output as a
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/// gprel32 (32-bit GP relative) value.
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///
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/// This is used to implement assembler directives such as .gprel32 on
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/// targets that support them.
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virtual void EmitGPRel32Value(const MCExpr *Value);
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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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virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue);
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/// \brief Emit NumBytes worth of zeros.
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/// This function properly handles data in virtual sections.
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virtual void EmitZeros(uint64_t NumBytes);
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/// EmitValueToAlignment - Emit some number of copies of @p Value until
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/// the byte alignment @p ByteAlignment is reached.
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///
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/// If the number of bytes need to emit for the alignment is not a multiple
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/// of @p ValueSize, then the contents of the emitted fill bytes is
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/// undefined.
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///
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/// This used to implement the .align assembler directive.
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///
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/// @param ByteAlignment - The alignment to reach. This must be a power of
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/// two on some targets.
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/// @param Value - The value to use when filling bytes.
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/// @param ValueSize - The size of the integer (in bytes) to emit for
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/// @p Value. This must match a native machine width.
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/// @param MaxBytesToEmit - The maximum numbers of bytes to emit, or 0. If
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/// the alignment cannot be reached in this many bytes, no bytes are
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/// emitted.
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virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
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unsigned ValueSize = 1,
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unsigned MaxBytesToEmit = 0) = 0;
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/// EmitCodeAlignment - Emit nops until the byte alignment @p ByteAlignment
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/// is reached.
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///
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/// This used to align code where the alignment bytes may be executed. This
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/// can emit different bytes for different sizes to optimize execution.
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///
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/// @param ByteAlignment - The alignment to reach. This must be a power of
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/// two on some targets.
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/// @param MaxBytesToEmit - The maximum numbers of bytes to emit, or 0. If
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/// the alignment cannot be reached in this many bytes, no bytes are
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/// emitted.
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virtual void EmitCodeAlignment(unsigned ByteAlignment,
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unsigned MaxBytesToEmit = 0) = 0;
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/// EmitValueToOffset - Emit some number of copies of @p Value until the
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/// byte offset @p Offset is reached.
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///
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/// This is used to implement assembler directives such as .org.
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///
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/// @param Offset - The offset to reach. This may be an expression, but the
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/// expression must be associated with the current section.
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/// @param Value - The value to use when filling bytes.
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/// @return false on success, true if the offset was invalid.
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virtual bool EmitValueToOffset(const MCExpr *Offset,
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unsigned char Value = 0) = 0;
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/// @}
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/// EmitFileDirective - Switch to a new logical file. This is used to
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/// implement the '.file "foo.c"' assembler directive.
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virtual void EmitFileDirective(StringRef Filename) = 0;
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/// EmitDwarfFileDirective - Associate a filename with a specified logical
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/// file number. This implements the DWARF2 '.file 4 "foo.c"' assembler
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/// directive.
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virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
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StringRef Filename, unsigned CUID = 0);
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/// EmitDwarfLocDirective - This implements the DWARF2
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// '.loc fileno lineno ...' assembler directive.
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virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
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unsigned Column, unsigned Flags,
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unsigned Isa, unsigned Discriminator,
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StringRef FileName);
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virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
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const MCSymbol *LastLabel,
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const MCSymbol *Label,
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unsigned PointerSize) = 0;
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virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
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const MCSymbol *Label) {}
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void EmitDwarfSetLineAddr(int64_t LineDelta, const MCSymbol *Label,
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int PointerSize);
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virtual void EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding);
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virtual void EmitCFISections(bool EH, bool Debug);
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void EmitCFIStartProc();
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void EmitCFIEndProc();
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virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
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virtual void EmitCFIDefCfaOffset(int64_t Offset);
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virtual void EmitCFIDefCfaRegister(int64_t Register);
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virtual void EmitCFIOffset(int64_t Register, int64_t Offset);
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virtual void EmitCFIPersonality(const MCSymbol *Sym, unsigned Encoding);
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virtual void EmitCFILsda(const MCSymbol *Sym, unsigned Encoding);
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virtual void EmitCFIRememberState();
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virtual void EmitCFIRestoreState();
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virtual void EmitCFISameValue(int64_t Register);
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virtual void EmitCFIRestore(int64_t Register);
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virtual void EmitCFIRelOffset(int64_t Register, int64_t Offset);
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virtual void EmitCFIAdjustCfaOffset(int64_t Adjustment);
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virtual void EmitCFIEscape(StringRef Values);
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virtual void EmitCFISignalFrame();
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virtual void EmitCFIUndefined(int64_t Register);
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virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
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virtual void EmitCFIWindowSave();
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virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
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virtual void EmitWin64EHEndProc();
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virtual void EmitWin64EHStartChained();
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virtual void EmitWin64EHEndChained();
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virtual void EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
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bool Except);
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virtual void EmitWin64EHHandlerData();
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virtual void EmitWin64EHPushReg(unsigned Register);
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virtual void EmitWin64EHSetFrame(unsigned Register, unsigned Offset);
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virtual void EmitWin64EHAllocStack(unsigned Size);
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virtual void EmitWin64EHSaveReg(unsigned Register, unsigned Offset);
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virtual void EmitWin64EHSaveXMM(unsigned Register, unsigned Offset);
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virtual void EmitWin64EHPushFrame(bool Code);
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|
virtual void EmitWin64EHEndProlog();
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|
|
/// EmitInstruction - Emit the given @p Instruction into the current
|
|
/// section.
|
|
virtual void EmitInstruction(const MCInst &Inst) = 0;
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|
|
|
/// \brief Set the bundle alignment mode from now on in the section.
|
|
/// The argument is the power of 2 to which the alignment is set. The
|
|
/// value 0 means turn the bundle alignment off.
|
|
virtual void EmitBundleAlignMode(unsigned AlignPow2) = 0;
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|
|
/// \brief The following instructions are a bundle-locked group.
|
|
///
|
|
/// \param AlignToEnd - If true, the bundle-locked group will be aligned to
|
|
/// the end of a bundle.
|
|
virtual void EmitBundleLock(bool AlignToEnd) = 0;
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|
|
|
/// \brief Ends a bundle-locked group.
|
|
virtual void EmitBundleUnlock() = 0;
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|
|
|
/// EmitRawText - If this file is backed by a assembly streamer, this dumps
|
|
/// the specified string in the output .s file. This capability is
|
|
/// indicated by the hasRawTextSupport() predicate. By default this aborts.
|
|
virtual void EmitRawText(StringRef String);
|
|
void EmitRawText(const Twine &String);
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|
|
|
/// Flush - Causes any cached state to be written out.
|
|
virtual void Flush() {}
|
|
|
|
/// FinishImpl - Streamer specific finalization.
|
|
virtual void FinishImpl() = 0;
|
|
/// Finish - Finish emission of machine code.
|
|
void Finish();
|
|
};
|
|
|
|
/// createNullStreamer - Create a dummy machine code streamer, which does
|
|
/// nothing. This is useful for timing the assembler front end.
|
|
MCStreamer *createNullStreamer(MCContext &Ctx);
|
|
|
|
/// createAsmStreamer - Create a machine code streamer which will print out
|
|
/// assembly for the native target, suitable for compiling with a native
|
|
/// assembler.
|
|
///
|
|
/// \param InstPrint - If given, the instruction printer to use. If not given
|
|
/// the MCInst representation will be printed. This method takes ownership of
|
|
/// InstPrint.
|
|
///
|
|
/// \param CE - If given, a code emitter to use to show the instruction
|
|
/// encoding inline with the assembly. This method takes ownership of \p CE.
|
|
///
|
|
/// \param TAB - If given, a target asm backend to use to show the fixup
|
|
/// information in conjunction with encoding information. This method takes
|
|
/// ownership of \p TAB.
|
|
///
|
|
/// \param ShowInst - Whether to show the MCInst representation inline with
|
|
/// the assembly.
|
|
MCStreamer *createAsmStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer,
|
|
formatted_raw_ostream &OS, bool isVerboseAsm,
|
|
bool useLoc, bool useCFI, bool useDwarfDirectory,
|
|
MCInstPrinter *InstPrint = 0,
|
|
MCCodeEmitter *CE = 0, MCAsmBackend *TAB = 0,
|
|
bool ShowInst = false);
|
|
|
|
/// createMachOStreamer - Create a machine code streamer which will generate
|
|
/// Mach-O format object files.
|
|
///
|
|
/// Takes ownership of \p TAB and \p CE.
|
|
MCStreamer *createMachOStreamer(MCContext &Ctx, MCAsmBackend &TAB,
|
|
raw_ostream &OS, MCCodeEmitter *CE,
|
|
bool RelaxAll = false);
|
|
|
|
/// createWinCOFFStreamer - Create a machine code streamer which will
|
|
/// generate Microsoft COFF format object files.
|
|
///
|
|
/// Takes ownership of \p TAB and \p CE.
|
|
MCStreamer *createWinCOFFStreamer(MCContext &Ctx, MCAsmBackend &TAB,
|
|
MCCodeEmitter &CE, raw_ostream &OS,
|
|
bool RelaxAll = false);
|
|
|
|
/// createELFStreamer - Create a machine code streamer which will generate
|
|
/// ELF format object files.
|
|
MCStreamer *createELFStreamer(MCContext &Ctx, MCTargetStreamer *TargetStreamer,
|
|
MCAsmBackend &TAB, raw_ostream &OS,
|
|
MCCodeEmitter *CE, bool RelaxAll,
|
|
bool NoExecStack);
|
|
|
|
/// createPureStreamer - Create a machine code streamer which will generate
|
|
/// "pure" MC object files, for use with MC-JIT and testing tools.
|
|
///
|
|
/// Takes ownership of \p TAB and \p CE.
|
|
MCStreamer *createPureStreamer(MCContext &Ctx, MCAsmBackend &TAB,
|
|
raw_ostream &OS, MCCodeEmitter *CE);
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|