Update breakpad to make it work with MinGW

thirdparty/breakpad/common/pecoff/pecoff_file_id.cc

@@ -0,0 +1,91 @@
+// Copyright (c) 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// pecoff_file_id.cc: Return a unique identifier for a file
+//
+
+#include "common/pecoff/pecoff_file_id.h"
+
+#include <string.h>
+#include "common/pecoff/pecoffutils.h"
+
+namespace google_breakpad {
+
+// Attempt to locate a CodeView build-id section in a PECOFF binary
+// and copy as many bytes of it as will fit into |identifier|.
+static bool FindPeCoffBuildID(const uint8_t* mapped_base,
+                              uint8_t identifier[kMDGUIDSize],
+                              uint32_t *age) {
+  int peclass = PeCoffClass(mapped_base);
+  if (peclass == PE32)
+    return PeCoffClass32::GetBuildID(mapped_base, identifier, age);
+  if (peclass == PE32PLUS)
+    return PeCoffClass64::GetBuildID(mapped_base, identifier, age);
+
+  return false;
+}
+
+// Attempt to locate the .text section of a binary and generate
+// a simple hash by XORing the first page worth of bytes into |identifier|.
+static bool HashPeCoffTextSection(const uint8_t* mapped_base,
+                                  uint8_t identifier[kMDGUIDSize]) {
+  int peclass = PeCoffClass(mapped_base);
+  if (peclass == PE32)
+    return PeCoffClass32::HashTextSection(mapped_base, identifier);
+  if (peclass == PE32PLUS)
+    return PeCoffClass64::HashTextSection(mapped_base, identifier);
+
+  return false;
+}
+
+bool PeCoffFileID::PeCoffFileIdentifierFromMappedFile(const void* base,
+                                                      uint8_t identifier[kMDGUIDSize],
+                                                      uint32_t *age) {
+  *age = 0;
+
+  // Look for a build id first.
+  if (FindPeCoffBuildID(reinterpret_cast<const uint8_t *>(base), identifier,
+                        age))
+    return true;
+
+#if 1
+  // XXX: Fallback to a default debug_identifier.
+  memset(identifier, 0, kMDGUIDSize);
+  *age = 0;
+  return true;
+#else
+  // Fall back on hashing the first page of the text section.
+  // (This is of questionable value as the Windows Minidump writer doesn't have
+  // this feature)
+  return HashPeCoffTextSection(reinterpret_cast<const uint8_t *>(base),
+                               identifier);
+#endif
+}
+
+}  // namespace google_breakpad