1 files changed, 83 insertions, 0 deletions
diff --git a/libsanitizer/tsan/tsan_symbolize.cc b/libsanitizer/tsan/tsan_symbolize.cc
new file mode 100644
index 00000000000..439b8824c6a
--- /dev/null
+++ b/libsanitizer/tsan/tsan_symbolize.cc
@@ -0,0 +1,83 @@
+//===-- tsan_symbolize.cc -------------------------------------------------===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer (TSan), a race detector.
+//
+//===----------------------------------------------------------------------===//
+
+#include "tsan_symbolize.h"
+
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_placement_new.h"
+#include "sanitizer_common/sanitizer_symbolizer.h"
+#include "tsan_flags.h"
+#include "tsan_report.h"
+
+namespace __tsan {
+
+ReportStack *NewReportStackEntry(uptr addr) {
+  ReportStack *ent = (ReportStack*)internal_alloc(MBlockReportStack,
+                                                  sizeof(ReportStack));
+  internal_memset(ent, 0, sizeof(*ent));
+  ent->pc = addr;
+  return ent;
+}
+
+static ReportStack *NewReportStackEntry(const AddressInfo &info) {
+  ReportStack *ent = NewReportStackEntry(info.address);
+  if (info.module) {
+    // Strip module path to make output shorter.
+    const char *short_module_name = internal_strrchr(info.module, '/');
+    if (short_module_name)
+      short_module_name += 1;
+    else
+      short_module_name = info.module;
+    ent->module = internal_strdup(short_module_name);
+  }
+  ent->offset = info.module_offset;
+  if (info.function) {
+    ent->func = internal_strdup(info.function);
+  }
+  if (info.file)
+    ent->file = internal_strdup(info.file);
+  ent->line = info.line;
+  ent->col = info.column;
+  return ent;
+}
+
+ReportStack *SymbolizeCode(uptr addr) {
+  if (0 != internal_strcmp(flags()->external_symbolizer_path, "")) {
+    static const uptr kMaxAddrFrames = 16;
+    InternalScopedBuffer<AddressInfo> addr_frames(kMaxAddrFrames);
+    for (uptr i = 0; i < kMaxAddrFrames; i++)
+      new(&addr_frames[i]) AddressInfo();
+    uptr addr_frames_num = __sanitizer::SymbolizeCode(addr, addr_frames.data(),
+                                                      kMaxAddrFrames);
+    if (addr_frames_num == 0)
+      return NewReportStackEntry(addr);
+    ReportStack *top = 0;
+    ReportStack *bottom = 0;
+    for (uptr i = 0; i < addr_frames_num; i++) {
+      ReportStack *cur_entry = NewReportStackEntry(addr_frames[i]);
+      CHECK(cur_entry);
+      addr_frames[i].Clear();
+      if (i == 0)
+        top = cur_entry;
+      else
+        bottom->next = cur_entry;
+      bottom = cur_entry;
+    }
+    return top;
+  }
+  return SymbolizeCodeAddr2Line(addr);
+}
+
+ReportStack *SymbolizeData(uptr addr) {
+  return SymbolizeDataAddr2Line(addr);
+}
+
+}  // namespace __tsan