import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

toolkit/crashreporter/test/dumputils.cpp

@@ -0,0 +1,99 @@
+#include <stdio.h>
+
+#include "google_breakpad/processor/minidump.h"
+#include "nscore.h"
+
+using namespace google_breakpad;
+
+// Return true if the specified minidump contains a stream of |stream_type|.
+extern "C"
+NS_EXPORT bool
+DumpHasStream(const char* dump_file, uint32_t stream_type)
+{
+  Minidump dump(dump_file);
+  if (!dump.Read())
+    return false;
+
+  uint32_t length;
+  if (!dump.SeekToStreamType(stream_type, &length) || length == 0)
+    return false;
+
+  return true;
+}
+
+// Return true if the specified minidump contains a memory region
+// that contains the instruction pointer from the exception record.
+extern "C"
+NS_EXPORT bool
+DumpHasInstructionPointerMemory(const char* dump_file)
+{
+  Minidump minidump(dump_file);
+  if (!minidump.Read())
+    return false;
+
+  MinidumpException* exception = minidump.GetException();
+  MinidumpMemoryList* memory_list = minidump.GetMemoryList();
+  if (!exception || !memory_list) {
+    return false;
+  }
+
+  MinidumpContext* context = exception->GetContext();
+  if (!context)
+    return false;
+
+  uint64_t instruction_pointer;
+  if (!context->GetInstructionPointer(&instruction_pointer)) {
+    return false;
+  }
+
+  MinidumpMemoryRegion* region =
+    memory_list->GetMemoryRegionForAddress(instruction_pointer);
+  return region != nullptr;
+}
+
+// This function tests for a very specific condition. It finds
+// an address in a file, "crash-addr", in the CWD. It checks
+// that the minidump has a memory region starting at that
+// address. The region must be 32 bytes long and contain the
+// values 0 to 31 as bytes, in ascending order.
+extern "C"
+NS_EXPORT bool
+DumpCheckMemory(const char* dump_file)
+{
+  Minidump dump(dump_file);
+  if (!dump.Read())
+    return false;
+
+  MinidumpMemoryList* memory_list = dump.GetMemoryList();
+  if (!memory_list) {
+    return false;
+  }
+
+  void *addr;
+  FILE *fp = fopen("crash-addr", "r");
+  if (!fp)
+    return false;
+  if (fscanf(fp, "%p", &addr) != 1) {
+    fclose(fp);
+    return false;
+  }
+  fclose(fp);
+
+  remove("crash-addr");
+
+  MinidumpMemoryRegion* region =
+    memory_list->GetMemoryRegionForAddress(uint64_t(addr));
+  if(!region)
+    return false;
+
+  const uint8_t* chars = region->GetMemory();
+  if (region->GetSize() != 32)
+    return false;
+
+  for (int i=0; i<32; i++) {
+    if (chars[i] != i)
+      return false;
+  }
+
+  return true;
+}