MCStreamer.cpp revision 2d39a0e52df9ce050bd4e2de3a2ecca8fd9a87c3
1ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov//===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===// 2ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// 3ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// The LLVM Compiler Infrastructure 4ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// 5ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// This file is distributed under the University of Illinois Open Source 6ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// License. See LICENSE.TXT for details. 7ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// 8ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov//===----------------------------------------------------------------------===// 9ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 10ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/MC/MCAsmInfo.h" 11ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/MC/MCContext.h" 12ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/MC/MCStreamer.h" 13ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/MC/MCExpr.h" 14ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/MC/MCObjectWriter.h" 15ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/MC/MCSymbol.h" 16ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/Support/ErrorHandling.h" 17ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/Support/raw_ostream.h" 18ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/Support/LEB128.h" 19ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/ADT/SmallString.h" 20ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "llvm/ADT/Twine.h" 21ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include <cstdlib> 22ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovusing namespace llvm; 23ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 24ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovMCStreamer::MCStreamer(MCContext &Ctx) 25ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov : Context(Ctx), EmitEHFrame(true), EmitDebugFrame(false), 26ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurrentW64UnwindInfo(0), LastSymbol(0) { 27ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCSection *section = NULL; 28ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov SectionStack.push_back(std::make_pair(section, section)); 29ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 30ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 31ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovMCStreamer::~MCStreamer() { 32ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (unsigned i = 0; i < getNumW64UnwindInfos(); ++i) 33ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov delete W64UnwindInfos[i]; 34ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 35ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 36ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovconst MCExpr *MCStreamer::BuildSymbolDiff(MCContext &Context, 37ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCSymbol *A, 38ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCSymbol *B) { 39ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None; 40ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCExpr *ARef = 41ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbolRefExpr::Create(A, Variant, Context); 42ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCExpr *BRef = 43ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbolRefExpr::Create(B, Variant, Context); 44ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCExpr *AddrDelta = 45ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCBinaryExpr::Create(MCBinaryExpr::Sub, ARef, BRef, Context); 46ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return AddrDelta; 47ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 48ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 49ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovconst MCExpr *MCStreamer::ForceExpAbs(const MCExpr* Expr) { 50ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (Context.getAsmInfo().hasAggressiveSymbolFolding() || 51ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov isa<MCSymbolRefExpr>(Expr)) 52ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return Expr; 53ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 54ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *ABS = Context.CreateTempSymbol(); 55ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitAssignment(ABS, Expr); 56ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return MCSymbolRefExpr::Create(ABS, Context); 57ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 58ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 59ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovraw_ostream &MCStreamer::GetCommentOS() { 60ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov // By default, discard comments. 61ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return nulls(); 62ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 63ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 64ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta, 65ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCSymbol *Label, int PointerSize) { 66ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov // emit the sequence to set the address 67ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitIntValue(dwarf::DW_LNS_extended_op, 1); 68ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitULEB128IntValue(PointerSize + 1); 69ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitIntValue(dwarf::DW_LNE_set_address, 1); 70ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitSymbolValue(Label, PointerSize); 71ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 72ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov // emit the sequence for the LineDelta (from 1) and a zero address delta. 73ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfLineAddr::Emit(this, LineDelta, 0); 74ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 75ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 76ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// EmitIntValue - Special case of EmitValue that avoids the client having to 77ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// pass in a MCExpr for constant integers. 78ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, 79ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned AddrSpace) { 80ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov assert(Size <= 8 && "Invalid size"); 81ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov assert((isUIntN(8 * Size, Value) || isIntN(8 * Size, Value)) && 82ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov "Invalid size"); 83ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov char buf[8]; 84ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const bool isLittleEndian = Context.getAsmInfo().isLittleEndian(); 85ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (unsigned i = 0; i != Size; ++i) { 86ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned index = isLittleEndian ? i : (Size - i - 1); 87ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov buf[i] = uint8_t(Value >> (index * 8)); 88ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 89ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitBytes(StringRef(buf, Size), AddrSpace); 90ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 91ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 92ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the 93ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// client having to pass in a MCExpr for constant integers. 94ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace, 95ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned Padding) { 96ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov SmallString<128> Tmp; 97ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov raw_svector_ostream OSE(Tmp); 98ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov encodeULEB128(Value, OSE, Padding); 99ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitBytes(OSE.str(), AddrSpace); 100ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 101ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 102ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// EmitSLEB128Value - Special case of EmitSLEB128Value that avoids the 103ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// client having to pass in a MCExpr for constant integers. 104ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitSLEB128IntValue(int64_t Value, unsigned AddrSpace) { 105ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov SmallString<128> Tmp; 106ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov raw_svector_ostream OSE(Tmp); 107ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov encodeSLEB128(Value, OSE); 108ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitBytes(OSE.str(), AddrSpace); 109ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 110ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 111ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitAbsValue(const MCExpr *Value, unsigned Size, 112ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned AddrSpace) { 113ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCExpr *ABS = ForceExpAbs(Value); 114ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitValue(ABS, Size, AddrSpace); 115ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 116ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 117ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 118ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitValue(const MCExpr *Value, unsigned Size, 119ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned AddrSpace) { 120ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitValueImpl(Value, Size, AddrSpace); 121ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 122ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 123ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, 124ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned AddrSpace) { 125ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitValueImpl(MCSymbolRefExpr::Create(Sym, getContext()), Size, 126ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov AddrSpace); 127ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 128ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 129ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitGPRel64Value(const MCExpr *Value) { 130ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("unsupported directive in streamer"); 131ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 132ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 133ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitGPRel32Value(const MCExpr *Value) { 134ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("unsupported directive in streamer"); 135ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 136ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 137ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// EmitFill - Emit NumBytes bytes worth of the value specified by 138ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// FillValue. This implements directives such as '.space'. 139ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue, 140ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned AddrSpace) { 141ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const MCExpr *E = MCConstantExpr::Create(FillValue, getContext()); 142ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (uint64_t i = 0, e = NumBytes; i != e; ++i) 143ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitValue(E, 1, AddrSpace); 144ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 145ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 146ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovbool MCStreamer::EmitDwarfFileDirective(unsigned FileNo, 147ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov StringRef Directory, 148ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov StringRef Filename) { 149ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return getContext().GetDwarfFile(Directory, Filename, FileNo) == 0; 150ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 151ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 152ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line, 153ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned Column, unsigned Flags, 154ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned Isa, 155ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned Discriminator, 156ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov StringRef FileName) { 157ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov getContext().setCurrentDwarfLoc(FileNo, Line, Column, Flags, Isa, 158ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Discriminator); 159ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 160ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 161ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovMCDwarfFrameInfo *MCStreamer::getCurrentFrameInfo() { 162ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (FrameInfos.empty()) 163ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return NULL; 164ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return &FrameInfos.back(); 165ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 166ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 167ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EnsureValidFrame() { 168ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 169ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!CurFrame || CurFrame->End) 170ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("No open frame"); 171ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 172ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 173ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitEHSymAttributes(const MCSymbol *Symbol, 174ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *EHSymbol) { 175ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 176ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 177ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitLabel(MCSymbol *Symbol) { 178ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov assert(!Symbol->isVariable() && "Cannot emit a variable symbol!"); 179ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov assert(getCurrentSection() && "Cannot emit before setting section!"); 180ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Symbol->setSection(*getCurrentSection()); 181ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov LastSymbol = Symbol; 182ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 183ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 184ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) { 185ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 186ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 187ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->CompactUnwindEncoding = CompactUnwindEncoding; 188ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 189ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 190ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFISections(bool EH, bool Debug) { 191ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov assert(EH || Debug); 192ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitEHFrame = EH; 193ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitDebugFrame = Debug; 194ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 195ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 196ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIStartProc() { 197ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 198ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (CurFrame && !CurFrame->End) 199ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Starting a frame before finishing the previous one!"); 200ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 201ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo Frame; 202ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitCFIStartProcImpl(Frame); 203ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 204ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FrameInfos.push_back(Frame); 205ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 206ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 207ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIStartProcImpl(MCDwarfFrameInfo &Frame) { 208ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 209ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 210ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) { 211ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame.Function = LastSymbol; 212ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov // If the function is externally visible, we need to create a local 213ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov // symbol to avoid relocations. 214ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix(); 215ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (LastSymbol && LastSymbol->getName().startswith(Prefix)) { 216ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame.Begin = LastSymbol; 217ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 218ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame.Begin = getContext().CreateTempSymbol(); 219ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Frame.Begin); 220ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 221ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 222ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 223ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIEndProc() { 224ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 225ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 226ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitCFIEndProcImpl(*CurFrame); 227ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 228ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 229ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) { 230ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 231ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 232ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::RecordProcEnd(MCDwarfFrameInfo &Frame) { 233ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame.End = getContext().CreateTempSymbol(); 234ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Frame.End); 235ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 236ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 237ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIDefCfa(int64_t Register, int64_t Offset) { 238ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 239ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 240ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 241ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 242ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Dest(MachineLocation::VirtualFP); 243ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Source(Register, -Offset); 244ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(Label, Dest, Source); 245ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 246ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 247ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 248ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIDefCfaOffset(int64_t Offset) { 249ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 250ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 251ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 252ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 253ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Dest(MachineLocation::VirtualFP); 254ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Source(MachineLocation::VirtualFP, -Offset); 255ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(Label, Dest, Source); 256ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 257ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 258ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 259ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIAdjustCfaOffset(int64_t Adjustment) { 260ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 261ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 262ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 263ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 264ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Dest(MachineLocation::VirtualFP); 265ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Source(MachineLocation::VirtualFP, Adjustment); 266ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 267ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 268ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 269ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 270ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIDefCfaRegister(int64_t Register) { 271ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 272ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 273ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 274ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 275ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Dest(Register); 276ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Source(MachineLocation::VirtualFP); 277ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(Label, Dest, Source); 278ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 279ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 280ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 281ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIOffset(int64_t Register, int64_t Offset) { 282ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 283ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 284ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 285ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 286ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Dest(Register, Offset); 287ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Source(Register, Offset); 288ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(Label, Dest, Source); 289ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 290ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 291ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 292ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIRelOffset(int64_t Register, int64_t Offset) { 293ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 294ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 295ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 296ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 297ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Dest(Register, Offset); 298ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MachineLocation Source(Register, Offset); 299ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(MCCFIInstruction::RelMove, Label, Dest, Source); 300ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 301ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 302ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 303ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIPersonality(const MCSymbol *Sym, 304ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned Encoding) { 305ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 306ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 307ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Personality = Sym; 308ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->PersonalityEncoding = Encoding; 309ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 310ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 311ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFILsda(const MCSymbol *Sym, unsigned Encoding) { 312ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 313ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 314ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Lsda = Sym; 315ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->LsdaEncoding = Encoding; 316ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 317ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 318ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIRememberState() { 319ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 320ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 321ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 322ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 323ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(MCCFIInstruction::RememberState, Label); 324ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 325ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 326ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 327ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIRestoreState() { 328ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov // FIXME: Error if there is no matching cfi_remember_state. 329ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 330ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 331ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 332ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 333ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(MCCFIInstruction::RestoreState, Label); 334ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 335ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 336ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 337ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFISameValue(int64_t Register) { 338ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 339ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 340ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 341ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 342ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(MCCFIInstruction::SameValue, Label, Register); 343ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 344ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 345ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 346ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIRestore(int64_t Register) { 347ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 348ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 349ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 350ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 351ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(MCCFIInstruction::Restore, Label, Register); 352ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 353ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 354ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 355ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFIEscape(StringRef Values) { 356ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 357ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 358ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 359ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 360ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCCFIInstruction Instruction(MCCFIInstruction::Escape, Label, Values); 361ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Instruction); 362ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 363ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 364ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCFISignalFrame() { 365ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidFrame(); 366ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo(); 367ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->IsSignalFrame = true; 368ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 369ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 370ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame) { 371ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov W64UnwindInfos.push_back(Frame); 372ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurrentW64UnwindInfo = W64UnwindInfos.back(); 373ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 374ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 375ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EnsureValidW64UnwindInfo() { 376ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 377ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!CurFrame || CurFrame->End) 378ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("No open Win64 EH frame function!"); 379ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 380ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 381ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) { 382ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 383ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (CurFrame && !CurFrame->End) 384ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Starting a function before ending the previous one!"); 385ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo; 386ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame->Begin = getContext().CreateTempSymbol(); 387ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame->Function = Symbol; 388ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Frame->Begin); 389ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov setCurrentW64UnwindInfo(Frame); 390ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 391ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 392ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHEndProc() { 393ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 394ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 395ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (CurFrame->ChainedParent) 396ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Not all chained regions terminated!"); 397ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->End = getContext().CreateTempSymbol(); 398ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(CurFrame->End); 399ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 400ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 401ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHStartChained() { 402ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 403ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *Frame = new MCWin64EHUnwindInfo; 404ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 405ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame->Begin = getContext().CreateTempSymbol(); 406ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame->Function = CurFrame->Function; 407ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Frame->ChainedParent = CurFrame; 408ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Frame->Begin); 409ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov setCurrentW64UnwindInfo(Frame); 410ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 411ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 412ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHEndChained() { 413ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 414ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 415ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!CurFrame->ChainedParent) 416ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("End of a chained region outside a chained region!"); 417ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->End = getContext().CreateTempSymbol(); 418ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(CurFrame->End); 419ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurrentW64UnwindInfo = CurFrame->ChainedParent; 420ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 421ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 422ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHHandler(const MCSymbol *Sym, bool Unwind, 423ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov bool Except) { 424ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 425ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 426ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (CurFrame->ChainedParent) 427ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Chained unwind areas can't have handlers!"); 428ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->ExceptionHandler = Sym; 429ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!Except && !Unwind) 430ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Don't know what kind of handler this is!"); 431ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (Unwind) 432ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->HandlesUnwind = true; 433ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (Except) 434ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->HandlesExceptions = true; 435ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 436ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 437ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHHandlerData() { 438ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 439ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 440ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (CurFrame->ChainedParent) 441ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Chained unwind areas can't have handlers!"); 442ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 443ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 444ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHPushReg(unsigned Register) { 445ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 446ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 447ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 448ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHInstruction Inst(Win64EH::UOP_PushNonVol, Label, Register); 449ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 450ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Inst); 451ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 452ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 453ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) { 454ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 455ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 456ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (CurFrame->LastFrameInst >= 0) 457ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Frame register and offset already specified!"); 458ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (Offset & 0x0F) 459ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Misaligned frame pointer offset!"); 460ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, NULL, Register, Offset); 461ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->LastFrameInst = CurFrame->Instructions.size(); 462ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Inst); 463ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 464ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 465ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHAllocStack(unsigned Size) { 466ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 467ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (Size & 7) 468ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Misaligned stack allocation!"); 469ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 470ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 471ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHInstruction Inst(Label, Size); 472ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 473ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Inst); 474ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 475ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 476ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHSaveReg(unsigned Register, unsigned Offset) { 477ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 478ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (Offset & 7) 479ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Misaligned saved register offset!"); 480ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 481ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 482ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHInstruction Inst( 483ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Offset > 512*1024-8 ? Win64EH::UOP_SaveNonVolBig : Win64EH::UOP_SaveNonVol, 484ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Label, Register, Offset); 485ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 486ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Inst); 487ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 488ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 489ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHSaveXMM(unsigned Register, unsigned Offset) { 490ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 491ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (Offset & 0x0F) 492ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Misaligned saved vector register offset!"); 493ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 494ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 495ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHInstruction Inst( 496ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Offset > 512*1024-16 ? Win64EH::UOP_SaveXMM128Big : Win64EH::UOP_SaveXMM128, 497ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov Label, Register, Offset); 498ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 499ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Inst); 500ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 501ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 502ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHPushFrame(bool Code) { 503ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 504ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 505ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (CurFrame->Instructions.size() > 0) 506ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("If present, PushMachFrame must be the first UOP"); 507ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCSymbol *Label = getContext().CreateTempSymbol(); 508ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHInstruction Inst(Win64EH::UOP_PushMachFrame, Label, Code); 509ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(Label); 510ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->Instructions.push_back(Inst); 511ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 512ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 513ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitWin64EHEndProlog() { 514ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EnsureValidW64UnwindInfo(); 515ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindInfo *CurFrame = CurrentW64UnwindInfo; 516ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CurFrame->PrologEnd = getContext().CreateTempSymbol(); 517ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitLabel(CurFrame->PrologEnd); 518ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 519ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 520ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) { 521ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov llvm_unreachable("This file format doesn't support this directive"); 522ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 523ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 524ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitFnStart() { 525ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 526ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 527ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 528ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 529ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitFnEnd() { 530ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 531ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 532ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 533ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 534ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitCantUnwind() { 535ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 536ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 537ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 538ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 539ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitHandlerData() { 540ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 541ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 542ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 543ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 544ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitPersonality(const MCSymbol *Personality) { 545ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 546ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 547ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 548ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 549ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset) { 550ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 551ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 552ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 553ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 554ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitPad(int64_t Offset) { 555ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 556ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 557ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 558ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 559ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitRegSave(const SmallVectorImpl<unsigned> &RegList, bool) { 560ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "Not implemented yet\n"; 561ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 562ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 563ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 564ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// EmitRawText - If this file is backed by an assembly streamer, this dumps 565ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// the specified string in the output .s file. This capability is 566ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov/// indicated by the hasRawTextSupport() predicate. 567ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitRawText(StringRef String) { 568ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov errs() << "EmitRawText called on an MCStreamer that doesn't support it, " 569ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov " something must not be fully mc'ized\n"; 570ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov abort(); 571ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 572ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 573ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitRawText(const Twine &T) { 574ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov SmallString<128> Str; 575ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov T.toVector(Str); 576ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov EmitRawText(Str.str()); 577ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 578ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 579ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitFrames(bool usingCFI) { 580ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!getNumFrameInfos()) 581ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 582ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 583ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (EmitEHFrame) 584ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameEmitter::Emit(*this, usingCFI, true); 585ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 586ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (EmitDebugFrame) 587ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCDwarfFrameEmitter::Emit(*this, usingCFI, false); 588ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 589ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 590ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::EmitW64Tables() { 591ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!getNumW64UnwindInfos()) 592ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 593ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 594ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov MCWin64EHUnwindEmitter::Emit(*this); 595ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 596ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 597ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid MCStreamer::Finish() { 598ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!FrameInfos.empty() && !FrameInfos.back().End) 599ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov report_fatal_error("Unfinished frame!"); 600ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 601ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FinishImpl(); 602ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 603ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov