1 files changed, 76 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/scudo/standalone/flags.cpp b/contrib/llvm-project/compiler-rt/lib/scudo/standalone/flags.cpp
new file mode 100644
index 000000000000..f498edfbd326
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/scudo/standalone/flags.cpp
@@ -0,0 +1,76 @@
+//===-- flags.cpp -----------------------------------------------*- C++ -*-===//
+//
+// 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 "flags.h"
+#include "common.h"
+#include "flags_parser.h"
+
+#include "scudo/interface.h"
+
+namespace scudo {
+
+Flags *getFlags() {
+  static Flags F;
+  return &F;
+}
+
+void Flags::setDefaults() {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
+#include "flags.inc"
+#undef SCUDO_FLAG
+
+#ifdef GWP_ASAN_HOOKS
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  GWP_ASAN_##Name = DefaultValue;
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+#endif // GWP_ASAN_HOOKS
+}
+
+void registerFlags(FlagParser *Parser, Flags *F) {
+#define SCUDO_FLAG(Type, Name, DefaultValue, Description)                      \
+  Parser->registerFlag(#Name, Description, FlagType::FT_##Type,                \
+                       reinterpret_cast<void *>(&F->Name));
+#include "flags.inc"
+#undef SCUDO_FLAG
+
+#ifdef GWP_ASAN_HOOKS
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  Parser->registerFlag("GWP_ASAN_" #Name, Description, FlagType::FT_##Type,    \
+                       reinterpret_cast<void *>(&F->GWP_ASAN_##Name));
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+#endif // GWP_ASAN_HOOKS
+}
+
+static const char *getCompileDefinitionScudoDefaultOptions() {
+#ifdef SCUDO_DEFAULT_OPTIONS
+  return STRINGIFY(SCUDO_DEFAULT_OPTIONS);
+#else
+  return "";
+#endif
+}
+
+static const char *getScudoDefaultOptions() {
+  return (&__scudo_default_options) ? __scudo_default_options() : "";
+}
+
+void initFlags() {
+  Flags *F = getFlags();
+  F->setDefaults();
+  FlagParser Parser;
+  registerFlags(&Parser, F);
+  Parser.parseString(getCompileDefinitionScudoDefaultOptions());
+  Parser.parseString(getScudoDefaultOptions());
+  Parser.parseString(getEnv("SCUDO_OPTIONS"));
+  if (const char *V = getEnv("SCUDO_ALLOCATION_RING_BUFFER_SIZE")) {
+    Parser.parseStringPair("allocation_ring_buffer_size", V);
+  }
+}
+
+} // namespace scudo