[Lldb-commits] [lldb] r283259 - Adding a new Minidump post-mortem debugging plugin

Dimitar Vlahovski via lldb-commits lldb-commits at lists.llvm.org
Tue Oct 4 14:02:14 PDT 2016


Author: dvlahovski
Date: Tue Oct  4 16:02:13 2016
New Revision: 283259

URL: http://llvm.org/viewvc/llvm-project?rev=283259&view=rev
Log:
Adding a new Minidump post-mortem debugging plugin

Summary:
This plugin resembles the already existing Windows-only Minidump plugin.
The WinMinidumpPlugin uses the Windows API for parsing Minidumps
while this plugin is cross-platform because it includes a Minidump
parser (which is already commited)

It is able to produce a backtrace, to read the general puprose regiters,
inspect local variables, show image list, do memory reads, etc.

For now the only arch that this supports is x86 64 bit
This is because I have only written a register context for that arch.
Others will come in next CLs.

I copied the WinMinidump tests and adapted them a little bit for them to
work with the new plugin (and they pass)
I will add more tests, aiming for better code coverage.

There is still functionality to be added, see TODOs in code.

Reviewers: labath, zturner

Subscribers: beanz, mgorny, amccarth, lldb-commits, modocache

Differential Revision: https://reviews.llvm.org/D25196

Added:
    lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/
    lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/Makefile
    lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py
    lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.cpp
    lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.dmp
    lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.cpp
    lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.dmp
    lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.cpp
    lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.h
    lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.cpp
    lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.h
Modified:
    lldb/trunk/source/API/SystemInitializerFull.cpp
    lldb/trunk/source/Plugins/Process/minidump/CMakeLists.txt
    lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.cpp
    lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.h
    lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.cpp
    lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.h
    lldb/trunk/unittests/Process/minidump/MinidumpParserTest.cpp

Added: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/Makefile
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/Makefile?rev=283259&view=auto
==============================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/Makefile (added)
+++ lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/Makefile Tue Oct  4 16:02:13 2016
@@ -0,0 +1,6 @@
+LEVEL = ../../../make
+
+CXX_SOURCES := main.cpp
+
+include $(LEVEL)/Makefile.rules
+

Added: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py?rev=283259&view=auto
==============================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py (added)
+++ lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py Tue Oct  4 16:02:13 2016
@@ -0,0 +1,100 @@
+"""
+Test basics of Minidump debugging.
+"""
+
+from __future__ import print_function
+from six import iteritems
+
+
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class MiniDumpNewTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    NO_DEBUG_INFO_TESTCASE = True
+
+    def test_process_info_in_mini_dump(self):
+        """Test that lldb can read the process information from the Minidump."""
+        # target create -c linux-x86_64.dmp
+        self.dbg.CreateTarget("")
+        self.target = self.dbg.GetSelectedTarget()
+        self.process = self.target.LoadCore("linux-x86_64.dmp")
+        self.assertTrue(self.process, PROCESS_IS_VALID)
+        self.assertEqual(self.process.GetNumThreads(), 1)
+        self.assertEqual(self.process.GetProcessID(), 16001)
+
+    def test_thread_info_in_mini_dump(self):
+        """Test that lldb can read the thread information from the Minidump."""
+        # target create -c linux-x86_64.dmp
+        self.dbg.CreateTarget("")
+        self.target = self.dbg.GetSelectedTarget()
+        self.process = self.target.LoadCore("linux-x86_64.dmp")
+        # This process crashed due to a segmentation fault in its
+        # one and only thread.
+        self.assertEqual(self.process.GetNumThreads(), 1)
+        thread = self.process.GetThreadAtIndex(0)
+        self.assertEqual(thread.GetStopReason(), lldb.eStopReasonSignal)
+        stop_description = thread.GetStopDescription(256)
+        self.assertTrue("SIGSEGV" in stop_description)
+
+    def test_stack_info_in_mini_dump(self):
+        """Test that we can see a trivial stack in a breakpad-generated Minidump."""
+        # target create -c linux-x86_64.dmp
+        self.dbg.CreateTarget("")
+        self.target = self.dbg.GetSelectedTarget()
+        self.process = self.target.LoadCore("linux-x86_64.dmp")
+        self.assertEqual(self.process.GetNumThreads(), 1)
+        thread = self.process.GetThreadAtIndex(0)
+        # frame #0: a.out`crash()
+        # frame #1: a.out`main()
+        # frame #2: libc-2.19.so`__libc_start_main()
+        # frame #3: a.out`_start
+        self.assertEqual(thread.GetNumFrames(), 4)
+        frame = thread.GetFrameAtIndex(0)
+        self.assertTrue(frame.IsValid())
+        pc = frame.GetPC()
+        eip = frame.FindRegister("pc")
+        self.assertTrue(eip.IsValid())
+        self.assertEqual(pc, eip.GetValueAsUnsigned())
+
+    def test_snapshot_minidump(self):
+        """Test that if we load a snapshot minidump file (meaning the process did not crash) there is no stop reason."""
+        # target create -c linux-x86_64_not_crashed.dmp
+        self.dbg.CreateTarget("")
+        self.target = self.dbg.GetSelectedTarget()
+        self.process = self.target.LoadCore("linux-x86_64_not_crashed.dmp")
+        self.assertEqual(self.process.GetNumThreads(), 1)
+        thread = self.process.GetThreadAtIndex(0)
+        self.assertEqual(thread.GetStopReason(), lldb.eStopReasonNone)
+        stop_description = thread.GetStopDescription(256)
+        self.assertEqual(stop_description, None)
+
+    def test_deeper_stack_in_mini_dump(self):
+        """Test that we can examine a more interesting stack in a Minidump."""
+        # Launch with the Minidump, and inspect the stack.
+        target = self.dbg.CreateTarget(None)
+        process = target.LoadCore("linux-x86_64_not_crashed.dmp")
+        thread = process.GetThreadAtIndex(0)
+
+        expected_stack = {1: 'bar', 2: 'foo', 3: 'main'}
+        self.assertGreaterEqual(thread.GetNumFrames(), len(expected_stack))
+        for index, name in iteritems(expected_stack):
+            frame = thread.GetFrameAtIndex(index)
+            self.assertTrue(frame.IsValid())
+            function_name = frame.GetFunctionName()
+            self.assertTrue(name in function_name)
+
+    def test_local_variables_in_mini_dump(self):
+        """Test that we can examine local variables in a Minidump."""
+        # Launch with the Minidump, and inspect a local variable.
+        target = self.dbg.CreateTarget(None)
+        process = target.LoadCore("linux-x86_64_not_crashed.dmp")
+        thread = process.GetThreadAtIndex(0)
+        frame = thread.GetFrameAtIndex(1)
+        value = frame.EvaluateExpression('x')
+        self.assertEqual(value.GetValueAsSigned(), 3)

Added: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.cpp?rev=283259&view=auto
==============================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.cpp (added)
+++ lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.cpp Tue Oct  4 16:02:13 2016
@@ -0,0 +1,28 @@
+// Example source from breakpad's linux tutorial
+// https://chromium.googlesource.com/breakpad/breakpad/+/master/docs/linux_starter_guide.md
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "client/linux/handler/exception_handler.h"
+
+static bool dumpCallback(const google_breakpad::MinidumpDescriptor &descriptor,
+                         void *context, bool succeeded) {
+  printf("Dump path: %s\n", descriptor.path());
+  return succeeded;
+}
+
+void crash() {
+  volatile int *a = (int *)(NULL);
+  *a = 1;
+}
+
+int main(int argc, char *argv[]) {
+  google_breakpad::MinidumpDescriptor descriptor("/tmp");
+  google_breakpad::ExceptionHandler eh(descriptor, NULL, dumpCallback, NULL,
+                                       true, -1);
+  printf("pid: %d\n", getpid());
+  crash();
+  return 0;
+}

Added: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.dmp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.dmp?rev=283259&view=auto
==============================================================================
Binary files lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.dmp (added) and lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64.dmp Tue Oct  4 16:02:13 2016 differ

Added: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.cpp?rev=283259&view=auto
==============================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.cpp (added)
+++ lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.cpp Tue Oct  4 16:02:13 2016
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "client/linux/handler/exception_handler.h"
+
+static bool dumpCallback(const google_breakpad::MinidumpDescriptor& descriptor,
+void* context, bool succeeded) {
+    printf("Dump path: %s\n", descriptor.path());
+    return succeeded;
+}
+
+int global = 42;
+
+int
+bar(int x, google_breakpad::ExceptionHandler &eh)
+{
+    eh.WriteMinidump();
+    int y = 4*x + global;
+    return y;
+}
+
+int
+foo(int x, google_breakpad::ExceptionHandler &eh)
+{
+    int y = 2*bar(3*x, eh);
+      return y;
+}
+
+
+int main(int argc, char* argv[]) {
+    google_breakpad::MinidumpDescriptor descriptor("/tmp");
+    google_breakpad::ExceptionHandler eh(descriptor, NULL, dumpCallback, NULL, true, -1);
+    foo(1, eh);
+    return 0;
+}

Added: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.dmp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.dmp?rev=283259&view=auto
==============================================================================
Binary files lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.dmp (added) and lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/linux-x86_64_not_crashed.dmp Tue Oct  4 16:02:13 2016 differ

Modified: lldb/trunk/source/API/SystemInitializerFull.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/API/SystemInitializerFull.cpp?rev=283259&r1=283258&r2=283259&view=diff
==============================================================================
--- lldb/trunk/source/API/SystemInitializerFull.cpp (original)
+++ lldb/trunk/source/API/SystemInitializerFull.cpp Tue Oct  4 16:02:13 2016
@@ -78,6 +78,7 @@
 #include "Plugins/Platform/gdb-server/PlatformRemoteGDBServer.h"
 #include "Plugins/Process/elf-core/ProcessElfCore.h"
 #include "Plugins/Process/gdb-remote/ProcessGDBRemote.h"
+#include "Plugins/Process/minidump/ProcessMinidump.h"
 #include "Plugins/ScriptInterpreter/None/ScriptInterpreterNone.h"
 #include "Plugins/SymbolFile/DWARF/SymbolFileDWARF.h"
 #include "Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.h"
@@ -307,6 +308,7 @@ void SystemInitializerFull::Initialize()
 #if defined(_MSC_VER)
   ProcessWinMiniDump::Initialize();
 #endif
+  minidump::ProcessMinidump::Initialize();
   MemoryHistoryASan::Initialize();
   AddressSanitizerRuntime::Initialize();
   ThreadSanitizerRuntime::Initialize();
@@ -429,9 +431,11 @@ void SystemInitializerFull::Terminate()
 
   JITLoaderGDB::Terminate();
   ProcessElfCore::Terminate();
+
 #if defined(_MSC_VER)
   ProcessWinMiniDump::Terminate();
 #endif
+  minidump::ProcessMinidump::Terminate();
   MemoryHistoryASan::Terminate();
   AddressSanitizerRuntime::Terminate();
   ThreadSanitizerRuntime::Terminate();

Modified: lldb/trunk/source/Plugins/Process/minidump/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/CMakeLists.txt?rev=283259&r1=283258&r2=283259&view=diff
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/CMakeLists.txt (original)
+++ lldb/trunk/source/Plugins/Process/minidump/CMakeLists.txt Tue Oct  4 16:02:13 2016
@@ -4,4 +4,6 @@ add_lldb_library(lldbPluginProcessMinidu
   MinidumpTypes.cpp
   MinidumpParser.cpp
   RegisterContextMinidump_x86_64.cpp
+  ThreadMinidump.cpp
+  ProcessMinidump.cpp
   )

Modified: lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.cpp?rev=283259&r1=283258&r2=283259&view=diff
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.cpp (original)
+++ lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.cpp Tue Oct  4 16:02:13 2016
@@ -1,11 +1,11 @@
-//===-- MinidumpParser.cpp ---------------------------------------*- C++ -*-===//
+//===-- MinidumpParser.cpp -------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
-//===----------------------------------------------------------------------===//
+//===--------------------------------------------------------------------===//
 
 // Project includes
 #include "MinidumpParser.h"
@@ -65,8 +65,7 @@ MinidumpParser::MinidumpParser(
 }
 
 llvm::ArrayRef<uint8_t> MinidumpParser::GetData() {
-  return llvm::ArrayRef<uint8_t>(m_data_sp->GetBytes(),
-                                 m_data_sp->GetByteSize());
+  return m_data_sp->GetData();
 }
 
 llvm::ArrayRef<uint8_t>
@@ -76,15 +75,14 @@ MinidumpParser::GetStream(MinidumpStream
     return {};
 
   // check if there is enough data
-  if (iter->second.rva + iter->second.data_size > m_data_sp->GetByteSize())
+  if (iter->second.rva + iter->second.data_size > GetData().size())
     return {};
 
-  return llvm::ArrayRef<uint8_t>(m_data_sp->GetBytes() + iter->second.rva,
-                                 iter->second.data_size);
+  return GetData().slice(iter->second.rva, iter->second.data_size);
 }
 
 llvm::Optional<std::string> MinidumpParser::GetMinidumpString(uint32_t rva) {
-  auto arr_ref = m_data_sp->GetData();
+  auto arr_ref = GetData();
   if (rva > arr_ref.size())
     return llvm::None;
   arr_ref = arr_ref.drop_front(rva);
@@ -100,6 +98,14 @@ llvm::ArrayRef<MinidumpThread> MinidumpP
   return MinidumpThread::ParseThreadList(data);
 }
 
+llvm::ArrayRef<uint8_t>
+MinidumpParser::GetThreadContext(const MinidumpThread &td) {
+  if (td.thread_context.rva + td.thread_context.data_size > GetData().size())
+    return llvm::None;
+
+  return GetData().slice(td.thread_context.rva, td.thread_context.data_size);
+}
+
 const MinidumpSystemInfo *MinidumpParser::GetSystemInfo() {
   llvm::ArrayRef<uint8_t> data = GetStream(MinidumpStreamType::SystemInfo);
 
@@ -224,3 +230,33 @@ const MinidumpExceptionStream *MinidumpP
 
   return MinidumpExceptionStream::Parse(data);
 }
+
+llvm::Optional<Range> MinidumpParser::FindMemoryRange(lldb::addr_t addr) {
+  llvm::ArrayRef<uint8_t> data = GetStream(MinidumpStreamType::MemoryList);
+
+  if (data.size() == 0)
+    return llvm::None;
+
+  llvm::ArrayRef<MinidumpMemoryDescriptor> memory_list =
+      MinidumpMemoryDescriptor::ParseMemoryList(data);
+
+  if (memory_list.size() == 0)
+    return llvm::None;
+
+  for (auto memory_desc : memory_list) {
+    const MinidumpLocationDescriptor &loc_desc = memory_desc.memory;
+    const lldb::addr_t range_start = memory_desc.start_of_memory_range;
+    const size_t range_size = loc_desc.data_size;
+
+    if (loc_desc.rva + loc_desc.data_size > GetData().size())
+      return llvm::None;
+
+    if (range_start <= addr && addr < range_start + range_size) {
+      return Range(range_start, GetData().slice(loc_desc.rva, range_size));
+    }
+  }
+
+  // TODO parse Memory64List which is present in full-memory Minidumps
+
+  return llvm::None;
+}

Modified: lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.h
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.h?rev=283259&r1=283258&r2=283259&view=diff
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.h (original)
+++ lldb/trunk/source/Plugins/Process/minidump/MinidumpParser.h Tue Oct  4 16:02:13 2016
@@ -1,12 +1,11 @@
-//===-- MinidumpParser.h -----------------------------------------*- C++
-//-*-===//
+//===-- MinidumpParser.h ---------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
-//===----------------------------------------------------------------------===//
+//===--------------------------------------------------------------------===//
 
 #ifndef liblldb_MinidumpParser_h_
 #define liblldb_MinidumpParser_h_
@@ -25,15 +24,22 @@
 #include "llvm/ADT/StringRef.h"
 
 // C includes
-
 // C++ includes
-#include <cstring>
-#include <unordered_map>
 
 namespace lldb_private {
 
 namespace minidump {
 
+// Describes a range of memory captured in the Minidump
+struct Range {
+  lldb::addr_t start; // virtual address of the beginning of the range
+  // range_ref - absolute pointer to the first byte of the range and size
+  llvm::ArrayRef<uint8_t> range_ref;
+
+  Range(lldb::addr_t start, llvm::ArrayRef<uint8_t> range_ref)
+      : start(start), range_ref(range_ref) {}
+};
+
 class MinidumpParser {
 public:
   static llvm::Optional<MinidumpParser>
@@ -47,6 +53,8 @@ public:
 
   llvm::ArrayRef<MinidumpThread> GetThreads();
 
+  llvm::ArrayRef<uint8_t> GetThreadContext(const MinidumpThread &td);
+
   const MinidumpSystemInfo *GetSystemInfo();
 
   ArchSpec GetArchitecture();
@@ -61,6 +69,8 @@ public:
 
   const MinidumpExceptionStream *GetExceptionStream();
 
+  llvm::Optional<Range> FindMemoryRange(lldb::addr_t addr);
+
 private:
   lldb::DataBufferSP m_data_sp;
   const MinidumpHeader *m_header;

Modified: lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.cpp?rev=283259&r1=283258&r2=283259&view=diff
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.cpp (original)
+++ lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.cpp Tue Oct  4 16:02:13 2016
@@ -85,7 +85,7 @@ MinidumpThread::ParseThreadList(llvm::Ar
   if (error.Fail() || *thread_count * sizeof(MinidumpThread) > data.size())
     return {};
 
-  return llvm::ArrayRef<MinidumpThread>(
+  return llvm::makeArrayRef(
       reinterpret_cast<const MinidumpThread *>(data.data()), *thread_count);
 }
 
@@ -162,7 +162,7 @@ MinidumpModule::ParseModuleList(llvm::Ar
   if (error.Fail() || *modules_count * sizeof(MinidumpModule) > data.size())
     return {};
 
-  return llvm::ArrayRef<MinidumpModule>(
+  return llvm::makeArrayRef(
       reinterpret_cast<const MinidumpModule *>(data.data()), *modules_count);
 }
 
@@ -176,3 +176,16 @@ MinidumpExceptionStream::Parse(llvm::Arr
 
   return exception_stream;
 }
+
+llvm::ArrayRef<MinidumpMemoryDescriptor>
+MinidumpMemoryDescriptor::ParseMemoryList(llvm::ArrayRef<uint8_t> &data) {
+  const llvm::support::ulittle32_t *mem_ranges_count;
+  Error error = consumeObject(data, mem_ranges_count);
+  if (error.Fail() ||
+      *mem_ranges_count * sizeof(MinidumpMemoryDescriptor) > data.size())
+    return {};
+
+  return llvm::makeArrayRef(
+      reinterpret_cast<const MinidumpMemoryDescriptor *>(data.data()),
+      *mem_ranges_count);
+}

Modified: lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.h
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.h?rev=283259&r1=283258&r2=283259&view=diff
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.h (original)
+++ lldb/trunk/source/Plugins/Process/minidump/MinidumpTypes.h Tue Oct  4 16:02:13 2016
@@ -207,6 +207,9 @@ static_assert(sizeof(MinidumpLocationDes
 struct MinidumpMemoryDescriptor {
   llvm::support::ulittle64_t start_of_memory_range;
   MinidumpLocationDescriptor memory;
+
+  static llvm::ArrayRef<MinidumpMemoryDescriptor>
+  ParseMemoryList(llvm::ArrayRef<uint8_t> &data);
 };
 static_assert(sizeof(MinidumpMemoryDescriptor) == 16,
               "sizeof MinidumpMemoryDescriptor is not correct!");
@@ -362,7 +365,8 @@ static_assert(sizeof(MinidumpModule) ==
 // Exception stuff
 struct MinidumpException {
   enum {
-    MaxParams = 15,
+    ExceptonInfoMaxParams = 15,
+    DumpRequested = 0xFFFFFFFF,
   };
 
   llvm::support::ulittle32_t exception_code;
@@ -371,7 +375,7 @@ struct MinidumpException {
   llvm::support::ulittle64_t exception_address;
   llvm::support::ulittle32_t number_parameters;
   llvm::support::ulittle32_t unused_alignment;
-  llvm::support::ulittle64_t exception_information[MaxParams];
+  llvm::support::ulittle64_t exception_information[ExceptonInfoMaxParams];
 };
 static_assert(sizeof(MinidumpException) == 152,
               "sizeof MinidumpException is not correct!");

Added: lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.cpp?rev=283259&view=auto
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.cpp (added)
+++ lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.cpp Tue Oct  4 16:02:13 2016
@@ -0,0 +1,263 @@
+//===-- ProcessMinidump.cpp -------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// Project includes
+#include "ProcessMinidump.h"
+#include "ThreadMinidump.h"
+
+// Other libraries and framework includes
+#include "lldb/Core/DataBufferHeap.h"
+#include "lldb/Core/Log.h"
+#include "lldb/Core/Module.h"
+#include "lldb/Core/ModuleSpec.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Core/Section.h"
+#include "lldb/Core/State.h"
+#include "lldb/Target/DynamicLoader.h"
+#include "lldb/Target/MemoryRegionInfo.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/UnixSignals.h"
+#include "lldb/Utility/LLDBAssert.h"
+
+// C includes
+// C++ includes
+
+using namespace lldb_private;
+using namespace minidump;
+
+ConstString ProcessMinidump::GetPluginNameStatic() {
+  static ConstString g_name("minidump");
+  return g_name;
+}
+
+const char *ProcessMinidump::GetPluginDescriptionStatic() {
+  return "Minidump plug-in.";
+}
+
+lldb::ProcessSP ProcessMinidump::CreateInstance(lldb::TargetSP target_sp,
+                                                lldb::ListenerSP listener_sp,
+                                                const FileSpec *crash_file) {
+  if (!crash_file)
+    return nullptr;
+
+  lldb::ProcessSP process_sp;
+  // Read enough data for the Minidump header
+  const size_t header_size = sizeof(MinidumpHeader);
+  lldb::DataBufferSP data_sp(crash_file->MemoryMapFileContents(0, header_size));
+  // The memory map can fail
+  if (!data_sp)
+    return nullptr;
+
+  // first, only try to parse the header, beacuse we need to be fast
+  llvm::ArrayRef<uint8_t> header_data(data_sp->GetBytes(), header_size);
+  const MinidumpHeader *header = MinidumpHeader::Parse(header_data);
+
+  if (data_sp->GetByteSize() != header_size || header == nullptr)
+    return nullptr;
+
+  lldb::DataBufferSP all_data_sp(crash_file->MemoryMapFileContents());
+  auto minidump_parser = MinidumpParser::Create(all_data_sp);
+  // check if the parser object is valid
+  // skip if the Minidump file is Windows generated, because we are still
+  // work-in-progress
+  if (!minidump_parser ||
+      minidump_parser->GetArchitecture().GetTriple().getOS() ==
+          llvm::Triple::OSType::Win32)
+    return nullptr;
+
+  return lldb::ProcessSP(new ProcessMinidump(
+      target_sp, listener_sp, *crash_file, minidump_parser.getValue()));
+}
+
+// TODO leave it to be only "return true" ?
+bool ProcessMinidump::CanDebug(lldb::TargetSP target_sp,
+                               bool plugin_specified_by_name) {
+  return true;
+}
+
+ProcessMinidump::ProcessMinidump(lldb::TargetSP target_sp,
+                                 lldb::ListenerSP listener_sp,
+                                 const FileSpec &core_file,
+                                 MinidumpParser minidump_parser)
+    : Process(target_sp, listener_sp), m_minidump_parser(minidump_parser),
+      m_core_file(core_file) {}
+
+ProcessMinidump::~ProcessMinidump() {
+  Clear();
+  // We need to call finalize on the process before destroying ourselves
+  // to make sure all of the broadcaster cleanup goes as planned. If we
+  // destruct this class, then Process::~Process() might have problems
+  // trying to fully destroy the broadcaster.
+  Finalize();
+}
+
+void ProcessMinidump::Initialize() {
+  static std::once_flag g_once_flag;
+
+  std::call_once(g_once_flag, []() {
+    PluginManager::RegisterPlugin(GetPluginNameStatic(),
+                                  GetPluginDescriptionStatic(),
+                                  ProcessMinidump::CreateInstance);
+  });
+}
+
+void ProcessMinidump::Terminate() {
+  PluginManager::UnregisterPlugin(ProcessMinidump::CreateInstance);
+}
+
+Error ProcessMinidump::DoLoadCore() {
+  Error error;
+
+  m_thread_list = m_minidump_parser.GetThreads();
+  m_active_exception = m_minidump_parser.GetExceptionStream();
+  GetTarget().SetArchitecture(GetArchitecture());
+  ReadModuleList();
+
+  llvm::Optional<lldb::pid_t> pid = m_minidump_parser.GetPid();
+  if (!pid) {
+    error.SetErrorString("failed to parse PID");
+    return error;
+  }
+  SetID(pid.getValue());
+
+  return error;
+}
+
+DynamicLoader *ProcessMinidump::GetDynamicLoader() {
+  if (m_dyld_ap.get() == nullptr)
+    m_dyld_ap.reset(DynamicLoader::FindPlugin(this, nullptr));
+  return m_dyld_ap.get();
+}
+
+ConstString ProcessMinidump::GetPluginName() { return GetPluginNameStatic(); }
+
+uint32_t ProcessMinidump::GetPluginVersion() { return 1; }
+
+Error ProcessMinidump::DoDestroy() { return Error(); }
+
+void ProcessMinidump::RefreshStateAfterStop() {
+  if (!m_active_exception)
+    return;
+
+  if (m_active_exception->exception_record.exception_code ==
+      MinidumpException::DumpRequested) {
+    return;
+  }
+
+  lldb::StopInfoSP stop_info;
+  lldb::ThreadSP stop_thread;
+
+  Process::m_thread_list.SetSelectedThreadByID(m_active_exception->thread_id);
+  stop_thread = Process::m_thread_list.GetSelectedThread();
+  ArchSpec arch = GetArchitecture();
+
+  if (arch.GetTriple().getOS() == llvm::Triple::Linux) {
+    stop_info = StopInfo::CreateStopReasonWithSignal(
+        *stop_thread, m_active_exception->exception_record.exception_code);
+  } else {
+    std::string desc;
+    llvm::raw_string_ostream desc_stream(desc);
+    desc_stream << "Exception "
+                << llvm::format_hex(
+                       m_active_exception->exception_record.exception_code, 8)
+                << " encountered at address "
+                << llvm::format_hex(
+                       m_active_exception->exception_record.exception_address,
+                       8);
+    stop_info = StopInfo::CreateStopReasonWithException(
+        *stop_thread, desc_stream.str().c_str());
+  }
+
+  stop_thread->SetStopInfo(stop_info);
+}
+
+bool ProcessMinidump::IsAlive() { return true; }
+
+bool ProcessMinidump::WarnBeforeDetach() const { return false; }
+
+size_t ProcessMinidump::ReadMemory(lldb::addr_t addr, void *buf, size_t size,
+                                   lldb_private::Error &error) {
+  // Don't allow the caching that lldb_private::Process::ReadMemory does
+  // since we have it all cached in our dump file anyway.
+  return DoReadMemory(addr, buf, size, error);
+}
+
+size_t ProcessMinidump::DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
+                                     lldb_private::Error &error) {
+  // I don't have a sense of how frequently this is called or how many memory
+  // ranges a Minidump typically has, so I'm not sure if searching for the
+  // appropriate range linearly each time is stupid.  Perhaps we should build
+  // an index for faster lookups.
+  llvm::Optional<Range> range = m_minidump_parser.FindMemoryRange(addr);
+  if (!range)
+    return 0;
+
+  // There's at least some overlap between the beginning of the desired range
+  // (addr) and the current range.  Figure out where the overlap begins and
+  // how much overlap there is, then copy it to the destination buffer.
+  lldbassert(range->start <= addr);
+  const size_t offset = addr - range->start;
+  lldbassert(offset < range->range_ref.size());
+  const size_t overlap = std::min(size, range->range_ref.size() - offset);
+  std::memcpy(buf, range->range_ref.data() + offset, overlap);
+  return overlap;
+}
+
+ArchSpec ProcessMinidump::GetArchitecture() {
+  return m_minidump_parser.GetArchitecture();
+}
+
+// TODO - parse the MemoryInfoListStream and implement this method
+Error ProcessMinidump::GetMemoryRegionInfo(
+    lldb::addr_t load_addr, lldb_private::MemoryRegionInfo &range_info) {
+  return {};
+}
+
+void ProcessMinidump::Clear() { Process::m_thread_list.Clear(); }
+
+bool ProcessMinidump::UpdateThreadList(
+    lldb_private::ThreadList &old_thread_list,
+    lldb_private::ThreadList &new_thread_list) {
+  uint32_t num_threads = 0;
+  if (m_thread_list.size() > 0)
+    num_threads = m_thread_list.size();
+
+  for (lldb::tid_t tid = 0; tid < num_threads; ++tid) {
+    lldb::ThreadSP thread_sp(new ThreadMinidump(
+        *this, m_thread_list[tid],
+        m_minidump_parser.GetThreadContext(m_thread_list[tid])));
+    new_thread_list.AddThread(thread_sp);
+  }
+  return new_thread_list.GetSize(false) > 0;
+}
+
+void ProcessMinidump::ReadModuleList() {
+  llvm::ArrayRef<MinidumpModule> modules = m_minidump_parser.GetModuleList();
+
+  for (auto module : modules) {
+    llvm::Optional<std::string> name =
+        m_minidump_parser.GetMinidumpString(module.module_name_rva);
+
+    if (!name)
+      continue;
+
+    const auto file_spec = FileSpec(name.getValue(), true);
+    ModuleSpec module_spec = file_spec;
+    Error error;
+    lldb::ModuleSP module_sp =
+        this->GetTarget().GetSharedModule(module_spec, &error);
+    if (!module_sp || error.Fail()) {
+      continue;
+    }
+
+    bool load_addr_changed = false;
+    module_sp->SetLoadAddress(this->GetTarget(), module.base_of_image, false,
+                              load_addr_changed);
+  }
+}

Added: lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.h
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.h?rev=283259&view=auto
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.h (added)
+++ lldb/trunk/source/Plugins/Process/minidump/ProcessMinidump.h Tue Oct  4 16:02:13 2016
@@ -0,0 +1,103 @@
+//===-- ProcessMinidump.h ---------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_ProcessMinidump_h_
+#define liblldb_ProcessMinidump_h_
+
+// Project includes
+#include "MinidumpParser.h"
+#include "MinidumpTypes.h"
+
+// Other libraries and framework includes
+#include "lldb/Core/ConstString.h"
+#include "lldb/Core/Error.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/StopInfo.h"
+#include "lldb/Target/Target.h"
+
+#include "llvm/Support/Format.h"
+#include "llvm/Support/raw_ostream.h"
+
+// C Includes
+// C++ Includes
+
+namespace lldb_private {
+
+namespace minidump {
+
+class ProcessMinidump : public Process {
+public:
+  static lldb::ProcessSP CreateInstance(lldb::TargetSP target_sp,
+                                        lldb::ListenerSP listener_sp,
+                                        const FileSpec *crash_file_path);
+
+  static void Initialize();
+
+  static void Terminate();
+
+  static ConstString GetPluginNameStatic();
+
+  static const char *GetPluginDescriptionStatic();
+
+  ProcessMinidump(lldb::TargetSP target_sp, lldb::ListenerSP listener_sp,
+                  const lldb_private::FileSpec &core_file,
+                  MinidumpParser minidump_parser);
+
+  ~ProcessMinidump() override;
+
+  bool CanDebug(lldb::TargetSP target_sp,
+                bool plugin_specified_by_name) override;
+
+  Error DoLoadCore() override;
+
+  DynamicLoader *GetDynamicLoader() override;
+
+  ConstString GetPluginName() override;
+
+  uint32_t GetPluginVersion() override;
+
+  Error DoDestroy() override;
+
+  void RefreshStateAfterStop() override;
+
+  bool IsAlive() override;
+
+  bool WarnBeforeDetach() const override;
+
+  size_t ReadMemory(lldb::addr_t addr, void *buf, size_t size,
+                    Error &error) override;
+
+  size_t DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
+                      Error &error) override;
+
+  ArchSpec GetArchitecture();
+
+  Error GetMemoryRegionInfo(lldb::addr_t load_addr,
+                            MemoryRegionInfo &range_info) override;
+
+  MinidumpParser m_minidump_parser;
+
+protected:
+  void Clear();
+
+  bool UpdateThreadList(ThreadList &old_thread_list,
+                        ThreadList &new_thread_list) override;
+
+  void ReadModuleList();
+
+private:
+  FileSpec m_core_file;
+  llvm::ArrayRef<MinidumpThread> m_thread_list;
+  const MinidumpExceptionStream *m_active_exception;
+};
+
+} // namespace minidump
+} // namespace lldb_private
+
+#endif // liblldb_ProcessMinidump_h_

Added: lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.cpp?rev=283259&view=auto
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.cpp (added)
+++ lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.cpp Tue Oct  4 16:02:13 2016
@@ -0,0 +1,102 @@
+//===-- ThreadMinidump.cpp --------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// Project includes
+#include "ThreadMinidump.h"
+#include "ProcessMinidump.h"
+
+#include "RegisterContextMinidump_x86_64.h"
+
+// Other libraries and framework includes
+#include "Plugins/Process/Utility/RegisterContextLinux_x86_64.h"
+
+#include "Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.h"
+
+#include "lldb/Core/DataExtractor.h"
+#include "lldb/Core/Log.h"
+#include "lldb/Target/RegisterContext.h"
+#include "lldb/Target/StopInfo.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/Unwind.h"
+
+// C Includes
+// C++ Includes
+
+using namespace lldb;
+using namespace lldb_private;
+using namespace minidump;
+
+ThreadMinidump::ThreadMinidump(Process &process, const MinidumpThread &td,
+                               llvm::ArrayRef<uint8_t> gpregset_data)
+    : Thread(process, td.thread_id), m_thread_reg_ctx_sp(),
+      m_gpregset_data(gpregset_data) {}
+
+ThreadMinidump::~ThreadMinidump() {}
+
+void ThreadMinidump::RefreshStateAfterStop() {}
+
+void ThreadMinidump::ClearStackFrames() {}
+
+RegisterContextSP ThreadMinidump::GetRegisterContext() {
+  if (!m_reg_context_sp) {
+    m_reg_context_sp = CreateRegisterContextForFrame(nullptr);
+  }
+  return m_reg_context_sp;
+}
+
+RegisterContextSP
+ThreadMinidump::CreateRegisterContextForFrame(StackFrame *frame) {
+  RegisterContextSP reg_ctx_sp;
+  uint32_t concrete_frame_idx = 0;
+  Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD));
+
+  if (frame)
+    concrete_frame_idx = frame->GetConcreteFrameIndex();
+
+  if (concrete_frame_idx == 0) {
+    if (m_thread_reg_ctx_sp)
+      return m_thread_reg_ctx_sp;
+
+    ProcessMinidump *process =
+        static_cast<ProcessMinidump *>(GetProcess().get());
+    ArchSpec arch = process->GetArchitecture();
+    RegisterInfoInterface *reg_interface = nullptr;
+
+    // TODO write other register contexts and add them here
+    switch (arch.GetMachine()) {
+    case llvm::Triple::x86_64: {
+      reg_interface = new RegisterContextLinux_x86_64(arch);
+      lldb::DataBufferSP buf =
+          ConvertMinidumpContextToRegIface(m_gpregset_data, reg_interface);
+      DataExtractor gpregs(buf, lldb::eByteOrderLittle, 8);
+      DataExtractor fpregs;
+      m_thread_reg_ctx_sp.reset(new RegisterContextCorePOSIX_x86_64(
+          *this, reg_interface, gpregs, fpregs));
+      break;
+    }
+    default:
+      break;
+    }
+
+    if (!reg_interface) {
+      if (log)
+        log->Printf("elf-core::%s:: Architecture(%d) not supported",
+                    __FUNCTION__, arch.GetMachine());
+      assert(false && "Architecture not supported");
+    }
+
+    reg_ctx_sp = m_thread_reg_ctx_sp;
+  } else if (m_unwinder_ap) {
+    reg_ctx_sp = m_unwinder_ap->CreateRegisterContextForFrame(frame);
+  }
+
+  return reg_ctx_sp;
+}
+
+bool ThreadMinidump::CalculateStopInfo() { return false; }

Added: lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.h
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.h?rev=283259&view=auto
==============================================================================
--- lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.h (added)
+++ lldb/trunk/source/Plugins/Process/minidump/ThreadMinidump.h Tue Oct  4 16:02:13 2016
@@ -0,0 +1,52 @@
+//===-- ThreadMinidump.h ---------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_ThreadMinidump_h_
+#define liblldb_ThreadMinidump_h_
+
+// Project includes
+#include "MinidumpTypes.h"
+
+// Other libraries and framework includes
+#include "lldb/Target/Thread.h"
+
+// C Includes
+// C++ Includes
+
+namespace lldb_private {
+
+namespace minidump {
+
+class ThreadMinidump : public Thread {
+public:
+  ThreadMinidump(Process &process, const MinidumpThread &td,
+                 llvm::ArrayRef<uint8_t> gpregset_data);
+
+  ~ThreadMinidump() override;
+
+  void RefreshStateAfterStop() override;
+
+  lldb::RegisterContextSP GetRegisterContext() override;
+
+  lldb::RegisterContextSP
+  CreateRegisterContextForFrame(StackFrame *frame) override;
+
+  void ClearStackFrames() override;
+
+protected:
+  lldb::RegisterContextSP m_thread_reg_ctx_sp;
+  llvm::ArrayRef<uint8_t> m_gpregset_data;
+
+  bool CalculateStopInfo() override;
+};
+
+} // namespace minidump
+} // namespace lldb_private
+
+#endif // liblldb_ThreadMinidump_h_

Modified: lldb/trunk/unittests/Process/minidump/MinidumpParserTest.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/unittests/Process/minidump/MinidumpParserTest.cpp?rev=283259&r1=283258&r2=283259&view=diff
==============================================================================
--- lldb/trunk/unittests/Process/minidump/MinidumpParserTest.cpp (original)
+++ lldb/trunk/unittests/Process/minidump/MinidumpParserTest.cpp Tue Oct  4 16:02:13 2016
@@ -60,7 +60,7 @@ public:
   std::unique_ptr<MinidumpParser> parser;
 };
 
-TEST_F(MinidumpParserTest, GetThreads) {
+TEST_F(MinidumpParserTest, GetThreadsAndGetThreadContext) {
   SetUpData("linux-x86_64.dmp");
   llvm::ArrayRef<MinidumpThread> thread_list;
 
@@ -68,7 +68,10 @@ TEST_F(MinidumpParserTest, GetThreads) {
   ASSERT_EQ(1UL, thread_list.size());
 
   const MinidumpThread thread = thread_list[0];
-  ASSERT_EQ(16001UL, thread.thread_id);
+  EXPECT_EQ(16001UL, thread.thread_id);
+
+  llvm::ArrayRef<uint8_t> context = parser->GetThreadContext(thread);
+  EXPECT_EQ(1232, context.size());
 }
 
 TEST_F(MinidumpParserTest, GetThreadsTruncatedFile) {
@@ -139,6 +142,24 @@ TEST_F(MinidumpParserTest, GetExceptionS
   ASSERT_EQ(11UL, exception_stream->exception_record.exception_code);
 }
 
+TEST_F(MinidumpParserTest, GetMemoryRange) {
+  SetUpData("linux-x86_64.dmp");
+  // There are two memory ranges in the file (size is in bytes, decimal):
+  // 1) 0x7ffceb34a000 12288
+  // 2) 0x401d46 256
+  EXPECT_TRUE(parser->FindMemoryRange(0x7ffceb34a000).hasValue());
+  EXPECT_TRUE(parser->FindMemoryRange(0x7ffceb34a000 + 12288 / 2).hasValue());
+  EXPECT_TRUE(parser->FindMemoryRange(0x7ffceb34a000 + 12288 - 1).hasValue());
+  EXPECT_FALSE(parser->FindMemoryRange(0x7ffceb34a000 + 12288).hasValue());
+
+  EXPECT_TRUE(parser->FindMemoryRange(0x401d46).hasValue());
+  EXPECT_TRUE(parser->FindMemoryRange(0x401d46 + 256 / 2).hasValue());
+  EXPECT_TRUE(parser->FindMemoryRange(0x401d46 + 256 - 1).hasValue());
+  EXPECT_FALSE(parser->FindMemoryRange(0x401d46 + 256).hasValue());
+
+  EXPECT_FALSE(parser->FindMemoryRange(0x2a).hasValue());
+}
+
 // Windows Minidump tests
 // fizzbuzz_no_heap.dmp is copied from the WinMiniDump tests
 TEST_F(MinidumpParserTest, GetArchitectureWindows) {
@@ -172,7 +193,6 @@ TEST_F(MinidumpParserTest, GetPidWindows
 }
 
 // Register stuff
-// TODO probably split register stuff tests into different file?
 #define REG_VAL(x) *(reinterpret_cast<uint64_t *>(x))
 
 TEST_F(MinidumpParserTest, ConvertRegisterContext) {




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