win: Implement exception snapshot

snapshot/win/cpu_context_win_test.cc

+// Copyright 2014 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/cpu_context_win.h"
+
+#include <windows.h>
+
+#include "build/build_config.h"
+#include "gtest/gtest.h"
+#include "snapshot/cpu_context.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+#if defined(ARCH_CPU_X86_FAMILY)
+
+#if defined(ARCH_CPU_64_BITS)

[Mark Mentovai, 2015/08/18 17:52:13]

Why not just #if defined(ARCH_CPU_X86_64) instead of the nested #ifs?

[scottmg, 2015/08/18 18:18:21]

Done.

+
+TEST(CPUContextWin, InitializeX64Context) {
+  CONTEXT context;
+  context.Rax = 10;
+  context.FltSave.TagWord = 11;
+  context.Dr0 = 12;
+
+  // Test the simple case, where everything in the CPUContextX86_64 argument is
+  // set directly from the supplied thread, float, and debug state parameters.
+  {
+    CPUContextX86_64 cpu_context_x86_64 = {};
+    InitializeX64Context(context, &cpu_context_x86_64);
+    EXPECT_EQ(10u, cpu_context_x86_64.rax);
+    EXPECT_EQ(11u, cpu_context_x86_64.fxsave.ftw);
+    EXPECT_EQ(12u, cpu_context_x86_64.dr0);
+  }
+}
+
+#else
+
+#error ARCH_CPU_32_BITS
+
+#endif  // ARCH_CPU_64_BITS
+
+#endif  // ARCH_CPU_X86_FAMILY
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad