Stub files for common symbolizer for AddressSanitizer and ThreadSanitizer tools.

It is an analogue of addr2line utility and should allow to map instruction address to a location
in source code at run-time. It should use debug information (in DWARF) in a binary, and hopefully
it would be possible to re-use code from llvm/DebugInfo/DIContext.h

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157806 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/sanitizer_common/sanitizer_symbolizer.cc b/lib/sanitizer_common/sanitizer_symbolizer.cc
new file mode 100644
index 00000000..0b23418c
--- /dev/null
+++ b/lib/sanitizer_common/sanitizer_symbolizer.cc
@@ -0,0 +1,56 @@
+//===-- symbolizer.cc -------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a stub for LLVM-based symbolizer.
+// This file is shared between AddressSanitizer and ThreadSanitizer
+// run-time libraries. See sanitizer.h for details.
+//===----------------------------------------------------------------------===//
+
+// WARNING: Avoid using library functions - see comments in symbolizer.h.
+#include "sanitizer_symbolizer.h"
+// FIXME: replace library malloc/free with internal_malloc/internal_free
+// that would be provided by ASan/TSan run-time libraries.
+#if defined(__linux__)
+# include <malloc.h>
+#elif defined(__APPLE__)
+# include <malloc/malloc.h>
+#endif
+
+namespace __sanitizer {
+
+void AddressInfo::Clear() {
+  free(module);
+  free(function);
+  free(file);
+}
+
+void AddressInfoList::Clear() {
+  AddressInfoList *cur = this;
+  while (cur) {
+    cur->info.Clear();
+    AddressInfoList *nxt = cur->next;
+    free(cur);
+    cur = nxt;
+  }
+}
+
+AddressInfoList* SymbolizeCode(uptr address) {
+  AddressInfoList *list = (AddressInfoList*)malloc(sizeof(AddressInfoList));
+  list->next = 0;
+  list->info.address = address;
+  list->info.module = 0;
+  list->info.module_offset = 0;
+  list->info.function = 0;
+  list->info.file = 0;
+  list->info.line = 0;
+  list->info.column = 0;
+  return list;
+}
+
+}  // namespace __sanitizer