1 files changed, 128 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h b/contrib/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
new file mode 100644
index 000000000000..bf3c2c28e32e
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
@@ -0,0 +1,128 @@
+//===-- sanitizer_procmaps.h ------------------------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is shared between AddressSanitizer and ThreadSanitizer.
+//
+// Information about the process mappings.
+//===----------------------------------------------------------------------===//
+#ifndef SANITIZER_PROCMAPS_H
+#define SANITIZER_PROCMAPS_H
+
+#include "sanitizer_platform.h"
+
+#if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
+    SANITIZER_APPLE || SANITIZER_SOLARIS ||  \
+    SANITIZER_FUCHSIA
+
+#include "sanitizer_common.h"
+#include "sanitizer_internal_defs.h"
+#include "sanitizer_fuchsia.h"
+#include "sanitizer_linux.h"
+#include "sanitizer_mac.h"
+#include "sanitizer_mutex.h"
+
+namespace __sanitizer {
+
+// Memory protection masks.
+static const uptr kProtectionRead = 1;
+static const uptr kProtectionWrite = 2;
+static const uptr kProtectionExecute = 4;
+static const uptr kProtectionShared = 8;
+
+struct MemoryMappedSegmentData;
+
+class MemoryMappedSegment {
+ public:
+  explicit MemoryMappedSegment(char *buff = nullptr, uptr size = 0)
+      : filename(buff), filename_size(size), data_(nullptr) {}
+  ~MemoryMappedSegment() {}
+
+  bool IsReadable() const { return protection & kProtectionRead; }
+  bool IsWritable() const { return protection & kProtectionWrite; }
+  bool IsExecutable() const { return protection & kProtectionExecute; }
+  bool IsShared() const { return protection & kProtectionShared; }
+
+  void AddAddressRanges(LoadedModule *module);
+
+  uptr start;
+  uptr end;
+  uptr offset;
+  char *filename;  // owned by caller
+  uptr filename_size;
+  uptr protection;
+  ModuleArch arch;
+  u8 uuid[kModuleUUIDSize];
+
+ private:
+  friend class MemoryMappingLayout;
+
+  // This field is assigned and owned by MemoryMappingLayout if needed
+  MemoryMappedSegmentData *data_;
+};
+
+struct ImageHeader;
+
+class MemoryMappingLayoutBase {
+ public:
+  virtual bool Next(MemoryMappedSegment *segment) { UNIMPLEMENTED(); }
+  virtual bool Error() const { UNIMPLEMENTED(); };
+  virtual void Reset() { UNIMPLEMENTED(); }
+
+ protected:
+  ~MemoryMappingLayoutBase() {}
+};
+
+class MemoryMappingLayout : public MemoryMappingLayoutBase {
+ public:
+  explicit MemoryMappingLayout(bool cache_enabled);
+
+// This destructor cannot be virtual, as it would cause an operator new() linking
+// failures in hwasan test cases. However non-virtual destructors emit warnings
+// in macOS build, hence disabling those
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wnon-virtual-dtor"
+#endif
+  ~MemoryMappingLayout();
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+  virtual bool Next(MemoryMappedSegment *segment) override;
+  virtual bool Error() const override;
+  virtual void Reset() override;
+  // In some cases, e.g. when running under a sandbox on Linux, ASan is unable
+  // to obtain the memory mappings. It should fall back to pre-cached data
+  // instead of aborting.
+  static void CacheMemoryMappings();
+
+  // Adds all mapped objects into a vector.
+  void DumpListOfModules(InternalMmapVectorNoCtor<LoadedModule> *modules);
+
+ protected:
+#if SANITIZER_APPLE
+  virtual const ImageHeader *CurrentImageHeader();
+#endif
+  MemoryMappingLayoutData data_;
+
+ private:
+  void LoadFromCache();
+};
+
+// Returns code range for the specified module.
+bool GetCodeRangeForFile(const char *module, uptr *start, uptr *end);
+
+bool IsDecimal(char c);
+uptr ParseDecimal(const char **p);
+bool IsHex(char c);
+uptr ParseHex(const char **p);
+
+}  // namespace __sanitizer
+
+#endif
+#endif  // SANITIZER_PROCMAPS_H