1 files changed, 126 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/MC/MCAsmInfo.cpp b/contrib/llvm-project/llvm/lib/MC/MCAsmInfo.cpp
new file mode 100644
index 000000000000..71e51e320f8b
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/MC/MCAsmInfo.cpp
@@ -0,0 +1,126 @@
+//===- MCAsmInfo.cpp - Asm Info -------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines target asm properties related what form asm statements
+// should take.
+//
+//===----------------------------------------------------------------------===//
+
+#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/CommandLine.h"
+
+using namespace llvm;
+
+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));
+
+MCAsmInfo::MCAsmInfo() {
+  SeparatorString = ";";
+  CommentString = "#";
+  LabelSuffix = ":";
+  PrivateGlobalPrefix = "L";
+  PrivateLabelPrefix = PrivateGlobalPrefix;
+  LinkerPrivateGlobalPrefix = "";
+  InlineAsmStart = "APP";
+  InlineAsmEnd = "NO_APP";
+  Code16Directive = ".code16";
+  Code32Directive = ".code32";
+  Code64Directive = ".code64";
+  ZeroDirective = "\t.zero\t";
+  AsciiDirective = "\t.ascii\t";
+  AscizDirective = "\t.asciz\t";
+  Data8bitsDirective = "\t.byte\t";
+  Data16bitsDirective = "\t.short\t";
+  Data32bitsDirective = "\t.long\t";
+  Data64bitsDirective = "\t.quad\t";
+  GlobalDirective = "\t.globl\t";
+  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.
+  // For reference:
+  // - Solaris always enables the integrated assembler by default
+  //   - SparcELFMCAsmInfo and X86ELFMCAsmInfo are handling this case
+  // - Windows always enables the integrated assembler by default
+  //   - MCAsmInfoCOFF is handling this case, should it be MCAsmInfoMicrosoft?
+  // - MachO targets always enables the integrated assembler by default
+  //   - MCAsmInfoDarwin is handling this case
+  // - Generic_GCC toolchains enable the integrated assembler on a per
+  //   architecture basis.
+  //   - The target subclasses for AArch64, ARM, and X86 handle these cases
+  UseIntegratedAssembler = false;
+  PreserveAsmComments = true;
+}
+
+MCAsmInfo::~MCAsmInfo() = default;
+
+void MCAsmInfo::addInitialFrameState(const MCCFIInstruction &Inst) {
+  InitialFrameState.push_back(Inst);
+}
+
+bool MCAsmInfo::isSectionAtomizableBySymbols(const MCSection &Section) const {
+  return false;
+}
+
+const MCExpr *
+MCAsmInfo::getExprForPersonalitySymbol(const MCSymbol *Sym,
+                                       unsigned Encoding,
+                                       MCStreamer &Streamer) const {
+  return getExprForFDESymbol(Sym, Encoding, Streamer);
+}
+
+const MCExpr *
+MCAsmInfo::getExprForFDESymbol(const MCSymbol *Sym,
+                               unsigned Encoding,
+                               MCStreamer &Streamer) const {
+  if (!(Encoding & dwarf::DW_EH_PE_pcrel))
+    return MCSymbolRefExpr::create(Sym, Streamer.getContext());
+
+  MCContext &Context = Streamer.getContext();
+  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);
+}
+
+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());
+}