win: Save contents of TEBs allowing !teb and !gle to work in windbg

snapshot/win/thread_snapshot_win.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "snapshot/win/thread_snapshot_win.h"
 
+#include <vector>
+
 #include "base/logging.h"
 #include "snapshot/win/cpu_context_win.h"
 #include "snapshot/win/process_reader_win.h"
 
 namespace crashpad {
 namespace internal {
 
 ThreadSnapshotWin::ThreadSnapshotWin()
-    : ThreadSnapshot(), context_(), stack_(), thread_(), initialized_() {
+    : ThreadSnapshot(),
+      context_(),
+      stack_(),
+      teb_(),
+      thread_(),
+      initialized_() {
 }
 
 ThreadSnapshotWin::~ThreadSnapshotWin() {
 }
 
 bool ThreadSnapshotWin::Initialize(
     ProcessReaderWin* process_reader,
     const ProcessReaderWin::Thread& process_reader_thread) {
   INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
 
   thread_ = process_reader_thread;
+  // TODO(scottmg): Ensure these regions are readable
+  // https://code.google.com/p/crashpad/issues/detail?id=59
   stack_.Initialize(
       process_reader, thread_.stack_region_address, thread_.stack_region_size);
+  teb_.Initialize(process_reader, thread_.teb_address, thread_.teb_size);
 
 #if defined(ARCH_CPU_X86_64)
   if (process_reader->Is64Bit()) {
     context_.architecture = kCPUArchitectureX86_64;
     context_.x86_64 = &context_union_.x86_64;
     InitializeX64Context(process_reader_thread.context.native, context_.x86_64);
   } else {
     context_.architecture = kCPUArchitectureX86;
     context_.x86 = &context_union_.x86;
     InitializeX86Context(process_reader_thread.context.wow64, context_.x86);
@@ skipping 28 matching lines @@
   return thread_.suspend_count;
 }
 
 int ThreadSnapshotWin::Priority() const {
   INITIALIZATION_STATE_DCHECK_VALID(initialized_);
   return thread_.priority;
 }
 
 uint64_t ThreadSnapshotWin::ThreadSpecificDataAddress() const {
   INITIALIZATION_STATE_DCHECK_VALID(initialized_);
-  return thread_.teb;
+  return thread_.teb_address;
+}
+
+std::vector<const MemorySnapshot*> ThreadSnapshotWin::ExtraMemory() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  // TODO(scottmg): Ensure this region is readable, and make sure we don't
+  // discard the entire dump if it isn't.
+  // https://code.google.com/p/crashpad/issues/detail?id=59
+  return std::vector<const MemorySnapshot*>(1, &teb_);
 }
 
 }  // namespace internal
 }  // namespace crashpad