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0c1740ce1a
This is an enum class, and will be appropriately prefixed, making the encoding type prefix redundant. No change to any uses as the use of this was not yet introduced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216893 91177308-0d34-0410-b5e6-96231b3b80d8
132 lines
4.5 KiB
C++
132 lines
4.5 KiB
C++
//===-- MCAsmInfo.cpp - Asm Info -------------------------------------------==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines target asm properties related what form asm statements
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// should take.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/Support/DataTypes.h"
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#include "llvm/Support/Dwarf.h"
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#include <cctype>
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#include <cstring>
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using namespace llvm;
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MCAsmInfo::MCAsmInfo() {
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PointerSize = 4;
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CalleeSaveStackSlotSize = 4;
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IsLittleEndian = true;
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StackGrowsUp = false;
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HasSubsectionsViaSymbols = false;
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HasMachoZeroFillDirective = false;
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HasMachoTBSSDirective = false;
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HasStaticCtorDtorReferenceInStaticMode = false;
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LinkerRequiresNonEmptyDwarfLines = false;
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MaxInstLength = 4;
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MinInstAlignment = 1;
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DollarIsPC = false;
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SeparatorString = ";";
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CommentString = "#";
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LabelSuffix = ":";
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UseAssignmentForEHBegin = false;
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PrivateGlobalPrefix = "L";
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LinkerPrivateGlobalPrefix = "";
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InlineAsmStart = "APP";
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InlineAsmEnd = "NO_APP";
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Code16Directive = ".code16";
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Code32Directive = ".code32";
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Code64Directive = ".code64";
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AssemblerDialect = 0;
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AllowAtInName = false;
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UseDataRegionDirectives = false;
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ZeroDirective = "\t.zero\t";
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AsciiDirective = "\t.ascii\t";
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AscizDirective = "\t.asciz\t";
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Data8bitsDirective = "\t.byte\t";
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Data16bitsDirective = "\t.short\t";
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Data32bitsDirective = "\t.long\t";
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Data64bitsDirective = "\t.quad\t";
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SunStyleELFSectionSwitchSyntax = false;
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UsesELFSectionDirectiveForBSS = false;
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AlignmentIsInBytes = true;
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TextAlignFillValue = 0;
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GPRel64Directive = nullptr;
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GPRel32Directive = nullptr;
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GlobalDirective = "\t.globl\t";
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HasSetDirective = true;
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HasAggressiveSymbolFolding = true;
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COMMDirectiveAlignmentIsInBytes = true;
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LCOMMDirectiveAlignmentType = LCOMM::NoAlignment;
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HasDotTypeDotSizeDirective = true;
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HasSingleParameterDotFile = true;
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HasIdentDirective = false;
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HasNoDeadStrip = false;
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WeakRefDirective = nullptr;
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HasWeakDefDirective = false;
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HasWeakDefCanBeHiddenDirective = false;
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HasLinkOnceDirective = false;
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HiddenVisibilityAttr = MCSA_Hidden;
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HiddenDeclarationVisibilityAttr = MCSA_Hidden;
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ProtectedVisibilityAttr = MCSA_Protected;
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SupportsDebugInformation = false;
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ExceptionsType = ExceptionHandling::None;
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WinEHEncodingType = WinEH::EncodingType::Invalid;
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DwarfUsesRelocationsAcrossSections = true;
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DwarfFDESymbolsUseAbsDiff = false;
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DwarfRegNumForCFI = false;
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NeedsDwarfSectionOffsetDirective = false;
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UseParensForSymbolVariant = false;
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// FIXME: Clang's logic should be synced with the logic used to initialize
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// this member and the two implementations should be merged.
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// For reference:
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// - Solaris always enables the integrated assembler by default
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// - SparcELFMCAsmInfo and X86ELFMCAsmInfo are handling this case
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// - Windows always enables the integrated assembler by default
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// - MCAsmInfoCOFF is handling this case, should it be MCAsmInfoMicrosoft?
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// - MachO targets always enables the integrated assembler by default
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// - MCAsmInfoDarwin is handling this case
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// - Generic_GCC toolchains enable the integrated assembler on a per
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// architecture basis.
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// - The target subclasses for AArch64, ARM, and X86 handle these cases
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UseIntegratedAssembler = false;
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CompressDebugSections = false;
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}
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MCAsmInfo::~MCAsmInfo() {
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}
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const MCExpr *
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MCAsmInfo::getExprForPersonalitySymbol(const MCSymbol *Sym,
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unsigned Encoding,
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MCStreamer &Streamer) const {
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return getExprForFDESymbol(Sym, Encoding, Streamer);
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}
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const MCExpr *
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MCAsmInfo::getExprForFDESymbol(const MCSymbol *Sym,
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unsigned Encoding,
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MCStreamer &Streamer) const {
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if (!(Encoding & dwarf::DW_EH_PE_pcrel))
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return MCSymbolRefExpr::Create(Sym, Streamer.getContext());
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MCContext &Context = Streamer.getContext();
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const MCExpr *Res = MCSymbolRefExpr::Create(Sym, Context);
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MCSymbol *PCSym = Context.CreateTempSymbol();
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Streamer.EmitLabel(PCSym);
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const MCExpr *PC = MCSymbolRefExpr::Create(PCSym, Context);
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return MCBinaryExpr::CreateSub(Res, PC, Context);
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}
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