1 //===-- llvm/MC/WinCOFFStreamer.cpp -----------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains an implementation of a Win32 COFF object file streamer.
12 //===----------------------------------------------------------------------===//
14 #define DEBUG_TYPE "WinCOFFStreamer"
16 #include "llvm/MC/MCObjectStreamer.h"
17 #include "llvm/MC/MCContext.h"
18 #include "llvm/MC/MCSection.h"
19 #include "llvm/MC/MCSymbol.h"
20 #include "llvm/MC/MCExpr.h"
21 #include "llvm/MC/MCCodeEmitter.h"
22 #include "llvm/MC/MCSectionCOFF.h"
23 #include "llvm/Target/TargetAsmBackend.h"
24 #include "llvm/Support/COFF.h"
25 #include "llvm/Support/Debug.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/Support/raw_ostream.h"
30 #define dbg_notimpl(x) \
31 do { dbgs() << "not implemented, " << __FUNCTION__ << " (" << x << ")"; \
32 abort(); } while (false);
35 class WinCOFFStreamer : public MCObjectStreamer {
37 WinCOFFStreamer(MCContext &Context,
38 TargetAsmBackend &TAB,
42 // MCStreamer interface
44 virtual void EmitLabel(MCSymbol *Symbol);
45 virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
46 virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
47 virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
48 virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
49 virtual void BeginCOFFSymbolDef(MCSymbol const *Symbol);
50 virtual void EmitCOFFSymbolStorageClass(int StorageClass);
51 virtual void EmitCOFFSymbolType(int Type);
52 virtual void EndCOFFSymbolDef();
53 virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
54 virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
55 unsigned ByteAlignment);
56 virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size);
57 virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
58 unsigned Size,unsigned ByteAlignment);
59 virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
60 uint64_t Size, unsigned ByteAlignment);
61 virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
62 virtual void EmitValue(const MCExpr *Value, unsigned Size,
64 virtual void EmitGPRel32Value(const MCExpr *Value);
65 virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
66 unsigned ValueSize, unsigned MaxBytesToEmit);
67 virtual void EmitCodeAlignment(unsigned ByteAlignment,
68 unsigned MaxBytesToEmit);
69 virtual void EmitValueToOffset(const MCExpr *Offset, unsigned char Value);
70 virtual void EmitFileDirective(StringRef Filename);
71 virtual void EmitDwarfFileDirective(unsigned FileNo,StringRef Filename);
72 virtual void EmitInstruction(const MCInst &Instruction);
73 virtual void Finish();
75 } // end anonymous namespace.
77 WinCOFFStreamer::WinCOFFStreamer(MCContext &Context,
78 TargetAsmBackend &TAB,
81 : MCObjectStreamer(Context, TAB, OS, &CE) {
84 // MCStreamer interface
86 void WinCOFFStreamer::EmitLabel(MCSymbol *Symbol) {
89 void WinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
90 dbg_notimpl("Flag = " << Flag);
93 void WinCOFFStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
96 void WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
97 MCSymbolAttr Attribute) {
100 void WinCOFFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
101 dbg_notimpl("Symbol = " << Symbol->getName() << ", DescValue = "<< DescValue);
104 void WinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) {
107 void WinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
110 void WinCOFFStreamer::EmitCOFFSymbolType(int Type) {
113 void WinCOFFStreamer::EndCOFFSymbolDef() {
116 void WinCOFFStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
117 dbg_notimpl("Symbol = " << Symbol->getName() << ", Value = " << *Value);
120 void WinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
121 unsigned ByteAlignment) {
124 void WinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
127 void WinCOFFStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
128 unsigned Size,unsigned ByteAlignment) {
129 MCSectionCOFF const *SectionCOFF =
130 static_cast<MCSectionCOFF const *>(Section);
132 dbg_notimpl("Section = " << SectionCOFF->getSectionName() << ", Symbol = " <<
133 Symbol->getName() << ", Size = " << Size << ", ByteAlignment = "
137 void WinCOFFStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
138 uint64_t Size, unsigned ByteAlignment) {
139 MCSectionCOFF const *SectionCOFF =
140 static_cast<MCSectionCOFF const *>(Section);
142 dbg_notimpl("Section = " << SectionCOFF->getSectionName() << ", Symbol = " <<
143 Symbol->getName() << ", Size = " << Size << ", ByteAlignment = "
147 void WinCOFFStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) {
150 void WinCOFFStreamer::EmitValue(const MCExpr *Value, unsigned Size,
151 unsigned AddrSpace) {
154 void WinCOFFStreamer::EmitGPRel32Value(const MCExpr *Value) {
155 dbg_notimpl("Value = '" << *Value);
158 void WinCOFFStreamer::EmitValueToAlignment(unsigned ByteAlignment,
161 unsigned MaxBytesToEmit) {
164 void WinCOFFStreamer::EmitCodeAlignment(unsigned ByteAlignment,
165 unsigned MaxBytesToEmit = 0) {
168 void WinCOFFStreamer::EmitValueToOffset(const MCExpr *Offset,
169 unsigned char Value = 0) {
170 dbg_notimpl("Offset = '" << *Offset << "', Value = " << Value);
173 void WinCOFFStreamer::EmitFileDirective(StringRef Filename) {
174 // Ignore for now, linkers don't care, and proper debug
175 // info will be a much large effort.
178 void WinCOFFStreamer::EmitDwarfFileDirective(unsigned FileNo,
179 StringRef Filename) {
180 dbg_notimpl("FileNo = " << FileNo << ", Filename = '" << Filename << "'");
183 void WinCOFFStreamer::EmitInstruction(const MCInst &Instruction) {
186 void WinCOFFStreamer::Finish() {
187 MCObjectStreamer::Finish();
192 MCStreamer *createWinCOFFStreamer(MCContext &Context,
193 TargetAsmBackend &TAB,
196 return new WinCOFFStreamer(Context, TAB, CE, OS);