1 files changed, 88 insertions, 0 deletions
diff --git a/llvm/lib/MC/MCSymbol.cpp b/llvm/lib/MC/MCSymbol.cpp
new file mode 100644
index 000000000000..67cab9a92722
--- /dev/null
+++ b/llvm/lib/MC/MCSymbol.cpp
@@ -0,0 +1,88 @@
+//===- lib/MC/MCSymbol.cpp - MCSymbol implementation ----------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Config/llvm-config.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCFragment.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cassert>
+#include <cstddef>
+
+using namespace llvm;
+
+// Only the address of this fragment is ever actually used.
+static MCDummyFragment SentinelFragment(nullptr);
+
+// Sentinel value for the absolute pseudo fragment.
+MCFragment *MCSymbol::AbsolutePseudoFragment = &SentinelFragment;
+
+void *MCSymbol::operator new(size_t s, const StringMapEntry<bool> *Name,
+                             MCContext &Ctx) {
+  // We may need more space for a Name to account for alignment.  So allocate
+  // space for the storage type and not the name pointer.
+  size_t Size = s + (Name ? sizeof(NameEntryStorageTy) : 0);
+
+  // For safety, ensure that the alignment of a pointer is enough for an
+  // MCSymbol.  This also ensures we don't need padding between the name and
+  // symbol.
+  static_assert((unsigned)alignof(MCSymbol) <= alignof(NameEntryStorageTy),
+                "Bad alignment of MCSymbol");
+  void *Storage = Ctx.allocate(Size, alignof(NameEntryStorageTy));
+  NameEntryStorageTy *Start = static_cast<NameEntryStorageTy*>(Storage);
+  NameEntryStorageTy *End = Start + (Name ? 1 : 0);
+  return End;
+}
+
+void MCSymbol::setVariableValue(const MCExpr *Value) {
+  assert(!IsUsed && "Cannot set a variable that has already been used.");
+  assert(Value && "Invalid variable value!");
+  assert((SymbolContents == SymContentsUnset ||
+          SymbolContents == SymContentsVariable) &&
+         "Cannot give common/offset symbol a variable value");
+  this->Value = Value;
+  SymbolContents = SymContentsVariable;
+  setUndefined();
+}
+
+void MCSymbol::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
+  // The name for this MCSymbol is required to be a valid target name.  However,
+  // some targets support quoting names with funny characters.  If the name
+  // contains a funny character, then print it quoted.
+  StringRef Name = getName();
+  if (!MAI || MAI->isValidUnquotedName(Name)) {
+    OS << Name;
+    return;
+  }
+
+  if (MAI && !MAI->supportsNameQuoting())
+    report_fatal_error("Symbol name with unsupported characters");
+
+  OS << '"';
+  for (char C : Name) {
+    if (C == '\n')
+      OS << "\\n";
+    else if (C == '"')
+      OS << "\\\"";
+    else
+      OS << C;
+  }
+  OS << '"';
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD void MCSymbol::dump() const {
+  dbgs() << *this;
+}
+#endif