-//===-- MCAsmInfo.cpp - Asm Info -------------------------------------------==//
+//===- MCAsmInfo.cpp - Asm Info -------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCStreamer.h"
-#include "llvm/Support/DataTypes.h"
-#include "llvm/Support/Dwarf.h"
-#include <cctype>
-#include <cstring>
+#include "llvm/Support/CommandLine.h"
+
using namespace llvm;
-MCAsmInfo::MCAsmInfo() {
- PointerSize = 4;
- CalleeSaveStackSlotSize = 4;
+enum DefaultOnOff { Default, Enable, Disable };
+static cl::opt<DefaultOnOff> DwarfExtendedLoc(
+ "dwarf-extended-loc", cl::Hidden,
+ cl::desc("Disable emission of the extended flags in .loc directives."),
+ cl::values(clEnumVal(Default, "Default for platform"),
+ clEnumVal(Enable, "Enabled"), clEnumVal(Disable, "Disabled")),
+ cl::init(Default));
- IsLittleEndian = true;
- StackGrowsUp = false;
- HasSubsectionsViaSymbols = false;
- HasMachoZeroFillDirective = false;
- HasMachoTBSSDirective = false;
- HasStaticCtorDtorReferenceInStaticMode = false;
- MaxInstLength = 4;
- MinInstAlignment = 1;
- DollarIsPC = false;
+MCAsmInfo::MCAsmInfo() {
SeparatorString = ";";
CommentString = "#";
LabelSuffix = ":";
- UseAssignmentForEHBegin = false;
PrivateGlobalPrefix = "L";
+ PrivateLabelPrefix = PrivateGlobalPrefix;
LinkerPrivateGlobalPrefix = "";
InlineAsmStart = "APP";
InlineAsmEnd = "NO_APP";
Code16Directive = ".code16";
Code32Directive = ".code32";
Code64Directive = ".code64";
- AssemblerDialect = 0;
- AllowAtInName = false;
- UseDataRegionDirectives = false;
ZeroDirective = "\t.zero\t";
AsciiDirective = "\t.ascii\t";
AscizDirective = "\t.asciz\t";
Data16bitsDirective = "\t.short\t";
Data32bitsDirective = "\t.long\t";
Data64bitsDirective = "\t.quad\t";
- SunStyleELFSectionSwitchSyntax = false;
- UsesELFSectionDirectiveForBSS = false;
- AlignmentIsInBytes = true;
- TextAlignFillValue = 0;
- GPRel64Directive = nullptr;
- GPRel32Directive = nullptr;
GlobalDirective = "\t.globl\t";
- SetDirectiveSuppressesReloc = false;
- HasAggressiveSymbolFolding = true;
- COMMDirectiveAlignmentIsInBytes = true;
- LCOMMDirectiveAlignmentType = LCOMM::NoAlignment;
- HasDotTypeDotSizeDirective = true;
- HasSingleParameterDotFile = true;
- HasIdentDirective = false;
- HasNoDeadStrip = false;
- WeakRefDirective = nullptr;
- HasWeakDefDirective = false;
- HasWeakDefCanBeHiddenDirective = false;
- HasLinkOnceDirective = false;
- HiddenVisibilityAttr = MCSA_Hidden;
- HiddenDeclarationVisibilityAttr = MCSA_Hidden;
- ProtectedVisibilityAttr = MCSA_Protected;
- SupportsDebugInformation = false;
- ExceptionsType = ExceptionHandling::None;
- WinEHEncodingType = WinEH::EncodingType::Invalid;
- DwarfUsesRelocationsAcrossSections = true;
- DwarfFDESymbolsUseAbsDiff = false;
- DwarfRegNumForCFI = false;
- NeedsDwarfSectionOffsetDirective = false;
- UseParensForSymbolVariant = false;
+ WeakDirective = "\t.weak\t";
+ if (DwarfExtendedLoc != Default)
+ SupportsExtendedDwarfLocDirective = DwarfExtendedLoc == Enable;
// FIXME: Clang's logic should be synced with the logic used to initialize
// this member and the two implementations should be merged.
// architecture basis.
// - The target subclasses for AArch64, ARM, and X86 handle these cases
UseIntegratedAssembler = false;
-
- CompressDebugSections = false;
+ PreserveAsmComments = true;
}
-MCAsmInfo::~MCAsmInfo() {
+MCAsmInfo::~MCAsmInfo() = default;
+
+bool MCAsmInfo::isSectionAtomizableBySymbols(const MCSection &Section) const {
+ return false;
}
const MCExpr *
unsigned Encoding,
MCStreamer &Streamer) const {
if (!(Encoding & dwarf::DW_EH_PE_pcrel))
- return MCSymbolRefExpr::Create(Sym, Streamer.getContext());
+ return MCSymbolRefExpr::create(Sym, Streamer.getContext());
MCContext &Context = Streamer.getContext();
- const MCExpr *Res = MCSymbolRefExpr::Create(Sym, Context);
- MCSymbol *PCSym = Context.CreateTempSymbol();
+ const MCExpr *Res = MCSymbolRefExpr::create(Sym, Context);
+ MCSymbol *PCSym = Context.createTempSymbol();
Streamer.EmitLabel(PCSym);
- const MCExpr *PC = MCSymbolRefExpr::Create(PCSym, Context);
- return MCBinaryExpr::CreateSub(Res, PC, Context);
+ const MCExpr *PC = MCSymbolRefExpr::create(PCSym, Context);
+ return MCBinaryExpr::createSub(Res, PC, Context);
+}
+
+static bool isAcceptableChar(char C) {
+ return (C >= 'a' && C <= 'z') || (C >= 'A' && C <= 'Z') ||
+ (C >= '0' && C <= '9') || C == '_' || C == '$' || C == '.' || C == '@';
+}
+
+bool MCAsmInfo::isValidUnquotedName(StringRef Name) const {
+ if (Name.empty())
+ return false;
+
+ // If any of the characters in the string is an unacceptable character, force
+ // quotes.
+ for (char C : Name) {
+ if (!isAcceptableChar(C))
+ return false;
+ }
+
+ return true;
+}
+
+bool MCAsmInfo::shouldOmitSectionDirective(StringRef SectionName) const {
+ // FIXME: Does .section .bss/.data/.text work everywhere??
+ return SectionName == ".text" || SectionName == ".data" ||
+ (SectionName == ".bss" && !usesELFSectionDirectiveForBSS());
}