2009-06-23 20:24:17 +00:00
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//===- 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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2009-07-01 06:08:37 +00:00
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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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2009-06-23 20:24:17 +00:00
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#ifndef LLVM_MC_MCSTREAMER_H
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#define LLVM_MC_MCSTREAMER_H
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2012-12-03 17:02:12 +00:00
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/SmallVector.h"
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2013-02-19 21:57:35 +00:00
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#include "llvm/MC/MCAssembler.h"
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2010-01-23 06:39:22 +00:00
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#include "llvm/MC/MCDirectives.h"
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2010-12-10 07:39:47 +00:00
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#include "llvm/MC/MCDwarf.h"
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2014-03-29 07:34:53 +00:00
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#include "llvm/MC/MCLinkerOptimizationHint.h"
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2011-05-19 02:49:00 +00:00
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#include "llvm/MC/MCWin64EH.h"
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2012-12-03 17:02:12 +00:00
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#include "llvm/Support/DataTypes.h"
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2013-01-18 01:25:48 +00:00
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#include <string>
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2009-06-24 19:25:34 +00:00
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2009-06-23 20:24:17 +00:00
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namespace llvm {
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2013-09-07 11:55:36 +00:00
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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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2013-10-08 13:08:17 +00:00
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class MCStreamer;
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2013-09-07 11:55:36 +00:00
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class MCSymbol;
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2014-01-30 04:02:47 +00:00
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class MCSymbolRefExpr;
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2014-01-22 18:32:35 +00:00
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class MCSubtargetInfo;
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2013-09-07 11:55:36 +00:00
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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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2014-02-04 17:22:40 +00:00
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class AssemblerConstantPools;
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2013-09-07 11:55:36 +00:00
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typedef std::pair<const MCSection *, const MCExpr *> MCSectionSubPair;
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2013-10-08 13:08:17 +00:00
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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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2014-01-26 06:06:37 +00:00
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MCStreamer &Streamer;
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2013-10-08 13:08:17 +00:00
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public:
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2014-01-26 06:06:37 +00:00
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MCTargetStreamer(MCStreamer &S);
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2013-10-08 13:08:17 +00:00
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virtual ~MCTargetStreamer();
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2014-01-14 04:25:13 +00:00
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2014-02-13 14:44:26 +00:00
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const MCStreamer &getStreamer() { return Streamer; }
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2014-01-14 04:25:13 +00:00
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// Allow a target to add behavior to the EmitLabel of MCStreamer.
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virtual void emitLabel(MCSymbol *Symbol);
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2014-03-20 09:44:49 +00:00
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// Allow a target to add behavior to the emitAssignment of MCStreamer.
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virtual void emitAssignment(MCSymbol *Symbol, const MCExpr *Value);
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2014-01-31 23:10:26 +00:00
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virtual void finish();
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2013-10-08 13:08:17 +00:00
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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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2014-01-26 06:06:37 +00:00
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ARMTargetStreamer(MCStreamer &S);
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2014-02-04 17:22:40 +00:00
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~ARMTargetStreamer();
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virtual void emitFnStart();
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virtual void emitFnEnd();
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virtual void emitCantUnwind();
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virtual void emitPersonality(const MCSymbol *Personality);
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virtual void emitPersonalityIndex(unsigned Index);
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virtual void emitHandlerData();
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2013-10-08 13:08:17 +00:00
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virtual void emitSetFP(unsigned FpReg, unsigned SpReg,
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2014-02-04 17:22:40 +00:00
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int64_t Offset = 0);
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virtual void emitMovSP(unsigned Reg, int64_t Offset = 0);
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virtual void emitPad(int64_t Offset);
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2013-10-08 13:08:17 +00:00
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virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
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2014-02-04 17:22:40 +00:00
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bool isVector);
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2014-01-21 02:33:10 +00:00
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virtual void emitUnwindRaw(int64_t StackOffset,
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2014-02-04 17:22:40 +00:00
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const SmallVectorImpl<uint8_t> &Opcodes);
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[arm] Implement eabi_attribute, cpu, and fpu directives.
This commit allows the ARM integrated assembler to parse
and assemble the code with .eabi_attribute, .cpu, and
.fpu directives.
To implement the feature, this commit moves the code from
AttrEmitter to ARMTargetStreamers, and several new test
cases related to cortex-m4, cortex-r5, and cortex-a15 are
added.
Besides, this commit also change the Subtarget->isFPOnlySP()
to Subtarget->hasD16() to match the usage of .fpu directive.
This commit changes the test cases:
* Several .eabi_attribute directives in
2010-09-29-mc-asm-header-test.ll are removed because the .fpu
directive already cover the functionality.
* In the Cortex-A15 test case, the value for
Tag_Advanced_SIMD_arch has be changed from 1 to 2,
which is more precise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193524 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-28 17:51:12 +00:00
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2014-02-04 17:22:40 +00:00
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virtual void switchVendor(StringRef Vendor);
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virtual void emitAttribute(unsigned Attribute, unsigned Value);
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virtual void emitTextAttribute(unsigned Attribute, StringRef String);
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2014-01-07 02:28:42 +00:00
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virtual void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
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2014-02-04 17:22:40 +00:00
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StringRef StringValue = "");
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virtual void emitFPU(unsigned FPU);
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virtual void emitArch(unsigned Arch);
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virtual void emitObjectArch(unsigned Arch);
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virtual void finishAttributeSection();
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virtual void emitInst(uint32_t Inst, char Suffix = '\0');
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virtual void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE);
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2014-04-27 20:23:58 +00:00
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virtual void emitThumbSet(MCSymbol *Symbol, const MCExpr *Value);
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2014-03-07 09:26:03 +00:00
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void finish() override;
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2014-02-04 17:22:40 +00:00
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/// Callback used to implement the ldr= pseudo.
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/// Add a new entry to the constant pool for the current section and return an
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/// MCExpr that can be used to refer to the constant pool location.
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const MCExpr *addConstantPoolEntry(const MCExpr *);
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/// Callback used to implemnt the .ltorg directive.
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/// Emit contents of constant pool for the current section.
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void emitCurrentConstantPool();
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private:
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2014-03-06 05:51:42 +00:00
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std::unique_ptr<AssemblerConstantPools> ConstantPools;
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2013-10-08 13:08:17 +00:00
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};
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2013-09-07 11:55:36 +00:00
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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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2014-03-06 05:51:42 +00:00
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std::unique_ptr<MCTargetStreamer> TargetStreamer;
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2010-12-10 07:39:47 +00:00
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2013-09-07 11:55:36 +00:00
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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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2011-07-22 21:16:32 +00:00
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2013-09-07 11:55:36 +00:00
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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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2011-05-22 04:15:07 +00:00
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2013-09-07 11:55:36 +00:00
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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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2009-06-24 19:25:34 +00:00
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2013-09-07 11:55:36 +00:00
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MCSymbol *LastSymbol;
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2011-02-16 01:08:29 +00:00
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2013-09-19 23:21:01 +00:00
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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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2013-09-07 11:55:36 +00:00
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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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2011-02-16 01:08:29 +00:00
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2013-09-07 11:55:36 +00:00
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protected:
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2014-01-26 06:06:37 +00:00
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MCStreamer(MCContext &Ctx);
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2013-04-17 21:18:16 +00:00
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2013-09-07 11:55:36 +00:00
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const MCExpr *BuildSymbolDiff(MCContext &Context, const MCSymbol *A,
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const MCSymbol *B);
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2010-09-02 18:53:37 +00:00
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2013-09-07 11:55:36 +00:00
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const MCExpr *ForceExpAbs(const MCExpr *Expr);
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2010-09-15 16:24:01 +00:00
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2013-09-07 11:55:36 +00:00
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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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2011-05-25 21:43:45 +00:00
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2013-09-07 11:55:36 +00:00
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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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2012-12-10 22:49:11 +00:00
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2013-10-24 22:43:10 +00:00
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virtual void EmitRawTextImpl(StringRef String);
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2013-09-07 11:55:36 +00:00
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public:
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virtual ~MCStreamer();
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2014-01-26 06:06:37 +00:00
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void setTargetStreamer(MCTargetStreamer *TS) {
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TargetStreamer.reset(TS);
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}
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2013-09-07 11:55:36 +00:00
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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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2014-01-14 01:21:46 +00:00
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MCTargetStreamer *getTargetStreamer() {
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return TargetStreamer.get();
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2013-10-08 13:08:17 +00:00
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}
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2013-09-07 11:55:36 +00:00
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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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2012-12-10 22:49:11 +00:00
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2013-09-09 19:48:37 +00:00
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void generateCompactUnwindEncodings(MCAsmBackend *MAB);
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2013-09-09 02:37:14 +00:00
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2013-09-07 11:55:36 +00:00
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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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2014-02-13 14:44:26 +00:00
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/// Is the integrated assembler required for this streamer to function
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/// correctly?
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virtual bool isIntegratedAssemblerRequired() const { return false; }
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2013-09-07 11:55:36 +00:00
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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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2014-01-16 16:28:37 +00:00
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/// Print T and prefix it with the comment string (normally #) and optionally
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/// a tab. This prints the comment immediately, not at the end of the
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/// current line. It is basically a safe version of EmitRawText: since it
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/// only prints comments, the object streamer ignores it instead of asserting.
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virtual void emitRawComment(const Twine &T, bool TabPrefix = true);
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2013-09-07 11:55:36 +00:00
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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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2013-09-19 23:21:01 +00:00
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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);
|
|
|
|
}
|
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// ChangeSection - Update streamer for a new active section.
|
|
|
|
///
|
|
|
|
/// This is called by PopSection and SwitchSection, if the current
|
|
|
|
/// section changes.
|
|
|
|
virtual void ChangeSection(const MCSection *, const MCExpr *) = 0;
|
|
|
|
|
|
|
|
/// pushSection - Save the current and previous section on the
|
|
|
|
/// section stack.
|
|
|
|
void PushSection() {
|
|
|
|
SectionStack.push_back(
|
|
|
|
std::make_pair(getCurrentSection(), getPreviousSection()));
|
|
|
|
}
|
|
|
|
|
|
|
|
/// popSection - Restore the current and previous section from
|
|
|
|
/// the section stack. Calls ChangeSection as needed.
|
|
|
|
///
|
|
|
|
/// Returns false if the stack was empty.
|
|
|
|
bool PopSection() {
|
|
|
|
if (SectionStack.size() <= 1)
|
|
|
|
return false;
|
|
|
|
MCSectionSubPair oldSection = SectionStack.pop_back_val().first;
|
|
|
|
MCSectionSubPair curSection = SectionStack.back().first;
|
|
|
|
|
|
|
|
if (oldSection != curSection)
|
|
|
|
ChangeSection(curSection.first, curSection.second);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool SubSection(const MCExpr *Subsection) {
|
|
|
|
if (SectionStack.empty())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
SwitchSection(SectionStack.back().first.first, Subsection);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// SwitchSection - Set the current section where code is being emitted to
|
|
|
|
/// @p Section. This is required to update CurSection.
|
|
|
|
///
|
|
|
|
/// This corresponds to assembler directives like .section, .text, etc.
|
2014-04-13 04:57:38 +00:00
|
|
|
void SwitchSection(const MCSection *Section,
|
|
|
|
const MCExpr *Subsection = nullptr) {
|
2013-09-07 11:55:36 +00:00
|
|
|
assert(Section && "Cannot switch to a null section!");
|
|
|
|
MCSectionSubPair curSection = SectionStack.back().first;
|
|
|
|
SectionStack.back().second = curSection;
|
|
|
|
if (MCSectionSubPair(Section, Subsection) != curSection) {
|
|
|
|
SectionStack.back().first = MCSectionSubPair(Section, Subsection);
|
|
|
|
ChangeSection(Section, Subsection);
|
2010-12-28 05:39:27 +00:00
|
|
|
}
|
2013-09-07 11:55:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// SwitchSectionNoChange - Set the current section where code is being
|
|
|
|
/// emitted to @p Section. This is required to update CurSection. This
|
|
|
|
/// version does not call ChangeSection.
|
|
|
|
void SwitchSectionNoChange(const MCSection *Section,
|
2014-04-13 04:57:38 +00:00
|
|
|
const MCExpr *Subsection = nullptr) {
|
2013-09-07 11:55:36 +00:00
|
|
|
assert(Section && "Cannot switch to a null section!");
|
|
|
|
MCSectionSubPair curSection = SectionStack.back().first;
|
|
|
|
SectionStack.back().second = curSection;
|
|
|
|
if (MCSectionSubPair(Section, Subsection) != curSection)
|
|
|
|
SectionStack.back().first = MCSectionSubPair(Section, Subsection);
|
|
|
|
}
|
|
|
|
|
2014-01-24 03:54:40 +00:00
|
|
|
/// Create the default sections and set the initial one.
|
2014-03-05 20:09:15 +00:00
|
|
|
virtual void InitSections();
|
2013-09-07 11:55:36 +00:00
|
|
|
|
2013-09-19 23:21:01 +00:00
|
|
|
/// AssignSection - Sets the symbol's section.
|
|
|
|
///
|
|
|
|
/// Each emitted symbol will be tracked in the ordering table,
|
|
|
|
/// so we can sort on them later.
|
|
|
|
void AssignSection(MCSymbol *Symbol, const MCSection *Section);
|
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// EmitLabel - Emit a label for @p Symbol into the current section.
|
|
|
|
///
|
|
|
|
/// This corresponds to an assembler statement such as:
|
|
|
|
/// foo:
|
|
|
|
///
|
|
|
|
/// @param Symbol - The symbol to emit. A given symbol should only be
|
|
|
|
/// emitted as a label once, and symbols emitted as a label should never be
|
|
|
|
/// used in an assignment.
|
2013-12-04 22:04:46 +00:00
|
|
|
// FIXME: These emission are non-const because we mutate the symbol to
|
|
|
|
// add the section we're emitting it to later.
|
2013-09-07 11:55:36 +00:00
|
|
|
virtual void EmitLabel(MCSymbol *Symbol);
|
2010-12-28 05:39:27 +00:00
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
virtual void EmitDebugLabel(MCSymbol *Symbol);
|
2009-06-23 20:24:17 +00:00
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
virtual void EmitEHSymAttributes(const MCSymbol *Symbol, MCSymbol *EHSymbol);
|
|
|
|
|
|
|
|
/// EmitAssemblerFlag - Note in the output the specified @p Flag.
|
|
|
|
virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) = 0;
|
2009-06-23 20:24:17 +00:00
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// EmitLinkerOptions - Emit the given list @p Options of strings as linker
|
|
|
|
/// options into the output.
|
|
|
|
virtual void EmitLinkerOptions(ArrayRef<std::string> Kind) {}
|
|
|
|
|
|
|
|
/// EmitDataRegion - Note in the output the specified region @p Kind.
|
|
|
|
virtual void EmitDataRegion(MCDataRegionType Kind) {}
|
|
|
|
|
2014-03-18 22:09:05 +00:00
|
|
|
/// EmitVersionMin - Specify the MachO minimum deployment target version.
|
|
|
|
virtual void EmitVersionMin(MCVersionMinType, unsigned Major, unsigned Minor,
|
|
|
|
unsigned Update) {}
|
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// EmitThumbFunc - Note in the output that the specified @p Func is
|
|
|
|
/// a Thumb mode function (ARM target only).
|
|
|
|
virtual void EmitThumbFunc(MCSymbol *Func) = 0;
|
|
|
|
|
|
|
|
/// EmitAssignment - Emit an assignment of @p Value to @p Symbol.
|
|
|
|
///
|
|
|
|
/// This corresponds to an assembler statement such as:
|
|
|
|
/// symbol = value
|
|
|
|
///
|
|
|
|
/// The assignment generates no code, but has the side effect of binding the
|
|
|
|
/// value in the current context. For the assembly streamer, this prints the
|
|
|
|
/// binding into the .s file.
|
2010-07-29 17:48:06 +00:00
|
|
|
///
|
2013-09-07 11:55:36 +00:00
|
|
|
/// @param Symbol - The symbol being assigned to.
|
|
|
|
/// @param Value - The value for the symbol.
|
2014-03-20 09:44:49 +00:00
|
|
|
virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
|
2010-07-11 22:05:00 +00:00
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// EmitWeakReference - Emit an weak reference from @p Alias to @p Symbol.
|
|
|
|
///
|
|
|
|
/// This corresponds to an assembler statement such as:
|
|
|
|
/// .weakref alias, symbol
|
|
|
|
///
|
|
|
|
/// @param Alias - The alias that is being created.
|
|
|
|
/// @param Symbol - The symbol being aliased.
|
|
|
|
virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) = 0;
|
|
|
|
|
|
|
|
/// EmitSymbolAttribute - Add the given @p Attribute to @p Symbol.
|
|
|
|
virtual bool EmitSymbolAttribute(MCSymbol *Symbol,
|
|
|
|
MCSymbolAttr Attribute) = 0;
|
|
|
|
|
|
|
|
/// EmitSymbolDesc - Set the @p DescValue for the @p Symbol.
|
|
|
|
///
|
|
|
|
/// @param Symbol - The symbol to have its n_desc field set.
|
|
|
|
/// @param DescValue - The value to set into the n_desc field.
|
|
|
|
virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) = 0;
|
|
|
|
|
|
|
|
/// BeginCOFFSymbolDef - Start emitting COFF symbol definition
|
|
|
|
///
|
|
|
|
/// @param Symbol - The symbol to have its External & Type fields set.
|
|
|
|
virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) = 0;
|
|
|
|
|
|
|
|
/// EmitCOFFSymbolStorageClass - Emit the storage class of the symbol.
|
|
|
|
///
|
|
|
|
/// @param StorageClass - The storage class the symbol should have.
|
|
|
|
virtual void EmitCOFFSymbolStorageClass(int StorageClass) = 0;
|
|
|
|
|
|
|
|
/// EmitCOFFSymbolType - Emit the type of the symbol.
|
|
|
|
///
|
|
|
|
/// @param Type - A COFF type identifier (see COFF::SymbolType in X86COFF.h)
|
|
|
|
virtual void EmitCOFFSymbolType(int Type) = 0;
|
|
|
|
|
|
|
|
/// EndCOFFSymbolDef - Marks the end of the symbol definition.
|
|
|
|
virtual void EndCOFFSymbolDef() = 0;
|
|
|
|
|
2013-12-20 18:15:00 +00:00
|
|
|
/// EmitCOFFSectionIndex - Emits a COFF section index.
|
|
|
|
///
|
|
|
|
/// @param Symbol - Symbol the section number relocation should point to.
|
|
|
|
virtual void EmitCOFFSectionIndex(MCSymbol const *Symbol);
|
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// EmitCOFFSecRel32 - Emits a COFF section relative relocation.
|
|
|
|
///
|
2013-12-20 17:52:31 +00:00
|
|
|
/// @param Symbol - Symbol the section relative relocation should point to.
|
2013-09-07 11:55:36 +00:00
|
|
|
virtual void EmitCOFFSecRel32(MCSymbol const *Symbol);
|
|
|
|
|
|
|
|
/// EmitELFSize - Emit an ELF .size directive.
|
|
|
|
///
|
|
|
|
/// This corresponds to an assembler statement such as:
|
|
|
|
/// .size symbol, expression
|
|
|
|
///
|
|
|
|
virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) = 0;
|
|
|
|
|
2014-03-29 07:34:53 +00:00
|
|
|
/// \brief Emit a Linker Optimization Hint (LOH) directive.
|
|
|
|
/// \param Args - Arguments of the LOH.
|
|
|
|
virtual void EmitLOHDirective(MCLOHType Kind, const MCLOHArgs &Args) {}
|
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// EmitCommonSymbol - Emit a common symbol.
|
|
|
|
///
|
|
|
|
/// @param Symbol - The common symbol to emit.
|
|
|
|
/// @param Size - The size of the common symbol.
|
|
|
|
/// @param ByteAlignment - The alignment of the symbol if
|
|
|
|
/// non-zero. This must be a power of 2.
|
|
|
|
virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
|
|
|
|
unsigned ByteAlignment) = 0;
|
|
|
|
|
|
|
|
/// EmitLocalCommonSymbol - Emit a local common (.lcomm) symbol.
|
|
|
|
///
|
|
|
|
/// @param Symbol - The common symbol to emit.
|
|
|
|
/// @param Size - The size of the common symbol.
|
|
|
|
/// @param ByteAlignment - The alignment of the common symbol in bytes.
|
|
|
|
virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
|
|
|
|
unsigned ByteAlignment) = 0;
|
|
|
|
|
|
|
|
/// EmitZerofill - Emit the zerofill section and an optional symbol.
|
|
|
|
///
|
|
|
|
/// @param Section - The zerofill section to create and or to put the symbol
|
|
|
|
/// @param Symbol - The zerofill symbol to emit, if non-NULL.
|
|
|
|
/// @param Size - The size of the zerofill symbol.
|
|
|
|
/// @param ByteAlignment - The alignment of the zerofill symbol if
|
|
|
|
/// non-zero. This must be a power of 2 on some targets.
|
2014-04-13 04:57:38 +00:00
|
|
|
virtual void EmitZerofill(const MCSection *Section,
|
|
|
|
MCSymbol *Symbol = nullptr, uint64_t Size = 0,
|
|
|
|
unsigned ByteAlignment = 0) = 0;
|
2013-09-07 11:55:36 +00:00
|
|
|
|
|
|
|
/// EmitTBSSSymbol - Emit a thread local bss (.tbss) symbol.
|
|
|
|
///
|
|
|
|
/// @param Section - The thread local common section.
|
|
|
|
/// @param Symbol - The thread local common symbol to emit.
|
|
|
|
/// @param Size - The size of the symbol.
|
|
|
|
/// @param ByteAlignment - The alignment of the thread local common symbol
|
|
|
|
/// if non-zero. This must be a power of 2 on some targets.
|
|
|
|
virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
|
|
|
|
uint64_t Size, unsigned ByteAlignment = 0) = 0;
|
|
|
|
|
|
|
|
/// @}
|
|
|
|
/// @name Generating Data
|
|
|
|
/// @{
|
|
|
|
|
|
|
|
/// EmitBytes - Emit the bytes in \p Data into the output.
|
|
|
|
///
|
|
|
|
/// This is used to implement assembler directives such as .byte, .ascii,
|
|
|
|
/// etc.
|
|
|
|
virtual void EmitBytes(StringRef Data) = 0;
|
2010-08-16 18:35:43 +00:00
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// EmitValue - Emit the expression @p Value into the output as a native
|
|
|
|
/// integer of the given @p Size bytes.
|
|
|
|
///
|
|
|
|
/// This is used to implement assembler directives such as .word, .quad,
|
|
|
|
/// etc.
|
2010-11-17 16:06:47 +00:00
|
|
|
///
|
2013-09-07 11:55:36 +00:00
|
|
|
/// @param Value - The value to emit.
|
|
|
|
/// @param Size - The size of the integer (in bytes) to emit. This must
|
|
|
|
/// match a native machine width.
|
2014-04-22 17:27:29 +00:00
|
|
|
/// @param Loc - The location of the expression for error reporting.
|
|
|
|
virtual void EmitValueImpl(const MCExpr *Value, unsigned Size,
|
|
|
|
const SMLoc &Loc = SMLoc()) = 0;
|
2013-09-07 11:55:36 +00:00
|
|
|
|
2014-04-22 17:27:29 +00:00
|
|
|
void EmitValue(const MCExpr *Value, unsigned Size,
|
|
|
|
const SMLoc &Loc = SMLoc());
|
2013-09-07 11:55:36 +00:00
|
|
|
|
|
|
|
/// EmitIntValue - Special case of EmitValue that avoids the client having
|
|
|
|
/// to pass in a MCExpr for constant integers.
|
|
|
|
virtual void EmitIntValue(uint64_t Value, unsigned Size);
|
|
|
|
|
|
|
|
/// EmitAbsValue - Emit the Value, but try to avoid relocations. On MachO
|
|
|
|
/// this is done by producing
|
|
|
|
/// foo = value
|
|
|
|
/// .long foo
|
|
|
|
void EmitAbsValue(const MCExpr *Value, unsigned Size);
|
|
|
|
|
|
|
|
virtual void EmitULEB128Value(const MCExpr *Value) = 0;
|
|
|
|
|
|
|
|
virtual void EmitSLEB128Value(const MCExpr *Value) = 0;
|
|
|
|
|
|
|
|
/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
|
|
|
|
/// client having to pass in a MCExpr for constant integers.
|
|
|
|
void EmitULEB128IntValue(uint64_t Value, unsigned Padding = 0);
|
|
|
|
|
|
|
|
/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the
|
|
|
|
/// client having to pass in a MCExpr for constant integers.
|
|
|
|
void EmitSLEB128IntValue(int64_t Value);
|
|
|
|
|
|
|
|
/// EmitSymbolValue - Special case of EmitValue that avoids the client
|
|
|
|
/// having to pass in a MCExpr for MCSymbols.
|
|
|
|
void EmitSymbolValue(const MCSymbol *Sym, unsigned Size);
|
|
|
|
|
|
|
|
/// EmitGPRel64Value - Emit the expression @p Value into the output as a
|
|
|
|
/// gprel64 (64-bit GP relative) value.
|
|
|
|
///
|
|
|
|
/// This is used to implement assembler directives such as .gpdword on
|
|
|
|
/// targets that support them.
|
|
|
|
virtual void EmitGPRel64Value(const MCExpr *Value);
|
|
|
|
|
|
|
|
/// EmitGPRel32Value - Emit the expression @p Value into the output as a
|
|
|
|
/// gprel32 (32-bit GP relative) value.
|
|
|
|
///
|
|
|
|
/// This is used to implement assembler directives such as .gprel32 on
|
|
|
|
/// targets that support them.
|
|
|
|
virtual void EmitGPRel32Value(const MCExpr *Value);
|
|
|
|
|
|
|
|
/// EmitFill - Emit NumBytes bytes worth of the value specified by
|
|
|
|
/// FillValue. This implements directives such as '.space'.
|
|
|
|
virtual void EmitFill(uint64_t NumBytes, uint8_t FillValue);
|
|
|
|
|
|
|
|
/// \brief Emit NumBytes worth of zeros.
|
|
|
|
/// This function properly handles data in virtual sections.
|
|
|
|
virtual void EmitZeros(uint64_t NumBytes);
|
|
|
|
|
|
|
|
/// EmitValueToAlignment - Emit some number of copies of @p Value until
|
|
|
|
/// the byte alignment @p ByteAlignment is reached.
|
|
|
|
///
|
|
|
|
/// If the number of bytes need to emit for the alignment is not a multiple
|
|
|
|
/// of @p ValueSize, then the contents of the emitted fill bytes is
|
|
|
|
/// undefined.
|
|
|
|
///
|
|
|
|
/// This used to implement the .align assembler directive.
|
|
|
|
///
|
|
|
|
/// @param ByteAlignment - The alignment to reach. This must be a power of
|
|
|
|
/// two on some targets.
|
|
|
|
/// @param Value - The value to use when filling bytes.
|
|
|
|
/// @param ValueSize - The size of the integer (in bytes) to emit for
|
|
|
|
/// @p Value. This must match a native machine width.
|
|
|
|
/// @param MaxBytesToEmit - The maximum numbers of bytes to emit, or 0. If
|
|
|
|
/// the alignment cannot be reached in this many bytes, no bytes are
|
|
|
|
/// emitted.
|
|
|
|
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value = 0,
|
|
|
|
unsigned ValueSize = 1,
|
|
|
|
unsigned MaxBytesToEmit = 0) = 0;
|
|
|
|
|
|
|
|
/// EmitCodeAlignment - Emit nops until the byte alignment @p ByteAlignment
|
|
|
|
/// is reached.
|
|
|
|
///
|
|
|
|
/// This used to align code where the alignment bytes may be executed. This
|
|
|
|
/// can emit different bytes for different sizes to optimize execution.
|
|
|
|
///
|
|
|
|
/// @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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|
2013-10-16 01:05:45 +00:00
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|
/// Emit the "identifiers" directive. This implements the
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/// '.ident "version foo"' assembler directive.
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|
virtual void EmitIdent(StringRef IdentString) {}
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|
|
2013-09-07 11:55:36 +00:00
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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.
|
2014-03-17 01:52:11 +00:00
|
|
|
virtual unsigned EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
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|
StringRef Filename,
|
|
|
|
unsigned CUID = 0);
|
2013-09-07 11:55:36 +00:00
|
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|
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|
|
/// EmitDwarfLocDirective - This implements the DWARF2
|
|
|
|
// '.loc fileno lineno ...' assembler directive.
|
|
|
|
virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
|
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|
|
unsigned Column, unsigned Flags,
|
|
|
|
unsigned Isa, unsigned Discriminator,
|
|
|
|
StringRef FileName);
|
|
|
|
|
2014-04-01 08:07:52 +00:00
|
|
|
virtual MCSymbol *getDwarfLineTableSymbol(unsigned CUID);
|
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|
|
2013-09-07 11:55:36 +00:00
|
|
|
void EmitDwarfSetLineAddr(int64_t LineDelta, const MCSymbol *Label,
|
|
|
|
int PointerSize);
|
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|
|
|
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|
|
virtual void EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding);
|
|
|
|
virtual void EmitCFISections(bool EH, bool Debug);
|
2014-01-27 17:20:25 +00:00
|
|
|
void EmitCFIStartProc(bool IsSimple);
|
2013-09-07 11:55:36 +00:00
|
|
|
void EmitCFIEndProc();
|
|
|
|
virtual void EmitCFIDefCfa(int64_t Register, int64_t Offset);
|
|
|
|
virtual void EmitCFIDefCfaOffset(int64_t Offset);
|
|
|
|
virtual void EmitCFIDefCfaRegister(int64_t Register);
|
|
|
|
virtual void EmitCFIOffset(int64_t Register, int64_t Offset);
|
|
|
|
virtual void EmitCFIPersonality(const MCSymbol *Sym, unsigned Encoding);
|
|
|
|
virtual void EmitCFILsda(const MCSymbol *Sym, unsigned Encoding);
|
|
|
|
virtual void EmitCFIRememberState();
|
|
|
|
virtual void EmitCFIRestoreState();
|
|
|
|
virtual void EmitCFISameValue(int64_t Register);
|
|
|
|
virtual void EmitCFIRestore(int64_t Register);
|
|
|
|
virtual void EmitCFIRelOffset(int64_t Register, int64_t Offset);
|
|
|
|
virtual void EmitCFIAdjustCfaOffset(int64_t Adjustment);
|
|
|
|
virtual void EmitCFIEscape(StringRef Values);
|
|
|
|
virtual void EmitCFISignalFrame();
|
|
|
|
virtual void EmitCFIUndefined(int64_t Register);
|
|
|
|
virtual void EmitCFIRegister(int64_t Register1, int64_t Register2);
|
2013-09-26 14:49:40 +00:00
|
|
|
virtual void EmitCFIWindowSave();
|
2013-09-07 11:55:36 +00:00
|
|
|
|
|
|
|
virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
|
|
|
|
virtual void EmitWin64EHEndProc();
|
|
|
|
virtual void EmitWin64EHStartChained();
|
|
|
|
virtual void EmitWin64EHEndChained();
|
|
|
|
virtual void EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind,
|
|
|
|
bool Except);
|
|
|
|
virtual void EmitWin64EHHandlerData();
|
|
|
|
virtual void EmitWin64EHPushReg(unsigned Register);
|
|
|
|
virtual void EmitWin64EHSetFrame(unsigned Register, unsigned Offset);
|
|
|
|
virtual void EmitWin64EHAllocStack(unsigned Size);
|
|
|
|
virtual void EmitWin64EHSaveReg(unsigned Register, unsigned Offset);
|
|
|
|
virtual void EmitWin64EHSaveXMM(unsigned Register, unsigned Offset);
|
|
|
|
virtual void EmitWin64EHPushFrame(bool Code);
|
|
|
|
virtual void EmitWin64EHEndProlog();
|
|
|
|
|
|
|
|
/// EmitInstruction - Emit the given @p Instruction into the current
|
|
|
|
/// section.
|
2014-01-28 23:12:42 +00:00
|
|
|
virtual void EmitInstruction(const MCInst &Inst, const MCSubtargetInfo &STI) = 0;
|
2013-09-07 11:55:36 +00:00
|
|
|
|
|
|
|
/// \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;
|
|
|
|
|
|
|
|
/// \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;
|
|
|
|
|
|
|
|
/// \brief Ends a bundle-locked group.
|
|
|
|
virtual void EmitBundleUnlock() = 0;
|
|
|
|
|
|
|
|
/// 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.
|
|
|
|
void EmitRawText(const Twine &String);
|
|
|
|
|
2013-09-19 23:21:01 +00:00
|
|
|
/// Flush - Causes any cached state to be written out.
|
|
|
|
virtual void Flush() {}
|
|
|
|
|
2013-09-07 11:55:36 +00:00
|
|
|
/// 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.
|
2014-01-26 06:06:37 +00:00
|
|
|
MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
|
2014-05-07 13:00:43 +00:00
|
|
|
bool isVerboseAsm, bool useDwarfDirectory,
|
|
|
|
MCInstPrinter *InstPrint, MCCodeEmitter *CE,
|
|
|
|
MCAsmBackend *TAB, bool ShowInst);
|
2013-09-07 11:55:36 +00:00
|
|
|
|
|
|
|
/// 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,
|
2014-03-29 07:05:06 +00:00
|
|
|
bool RelaxAll = false,
|
|
|
|
bool LabelSections = false);
|
2013-09-07 11:55:36 +00:00
|
|
|
|
|
|
|
/// createELFStreamer - Create a machine code streamer which will generate
|
|
|
|
/// ELF format object files.
|
2014-01-26 06:06:37 +00:00
|
|
|
MCStreamer *createELFStreamer(MCContext &Ctx, MCAsmBackend &TAB,
|
|
|
|
raw_ostream &OS, MCCodeEmitter *CE, bool RelaxAll,
|
2013-09-07 11:55:36 +00:00
|
|
|
bool NoExecStack);
|
|
|
|
|
2009-06-23 20:24:17 +00:00
|
|
|
} // end namespace llvm
|
|
|
|
|
|
|
|
#endif
|