mirror of
https://github.com/chromium/crashpad.git
synced 2025-03-10 06:36:02 +00:00
38b20ca57e
Previously, the mac version was under client/ and win under util/win/. This cl brings them all together under util/misc/ and combines common test code. Bug: crashpad:30 Change-Id: Idf0d0158b969d5aa9802dfc8c21f73041b2bcc6c Reviewed-on: https://chromium-review.googlesource.com/907755 Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Joshua Peraza <jperaza@chromium.org>
96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
// 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 "util/misc/capture_context.h"
|
||
|
||
#include <stdint.h>
|
||
|
||
#include <algorithm>
|
||
|
||
#include "gtest/gtest.h"
|
||
#include "util/misc/address_sanitizer.h"
|
||
#include "util/misc/capture_context_test_util.h"
|
||
|
||
namespace crashpad {
|
||
namespace test {
|
||
namespace {
|
||
|
||
void TestCaptureContext() {
|
||
NativeCPUContext context_1;
|
||
CaptureContext(&context_1);
|
||
|
||
{
|
||
SCOPED_TRACE("context_1");
|
||
ASSERT_NO_FATAL_FAILURE(SanityCheckContext(context_1));
|
||
}
|
||
|
||
// The program counter reference value is this function’s address. The
|
||
// captured program counter should be slightly greater than or equal to the
|
||
// reference program counter.
|
||
uintptr_t pc = ProgramCounterFromContext(context_1);
|
||
|
||
#if !defined(ADDRESS_SANITIZER)
|
||
// AddressSanitizer can cause enough code bloat that the “nearby” check would
|
||
// likely fail.
|
||
const uintptr_t kReferencePC =
|
||
reinterpret_cast<uintptr_t>(TestCaptureContext);
|
||
EXPECT_PRED2([](uintptr_t actual,
|
||
uintptr_t reference) { return actual - reference < 64u; },
|
||
pc,
|
||
kReferencePC);
|
||
#endif // !defined(ADDRESS_SANITIZER)
|
||
|
||
// Declare sp and context_2 here because all local variables need to be
|
||
// declared before computing the stack pointer reference value, so that the
|
||
// reference value can be the lowest value possible.
|
||
uintptr_t sp;
|
||
NativeCPUContext context_2;
|
||
|
||
// The stack pointer reference value is the lowest address of a local variable
|
||
// in this function. The captured program counter will be slightly less than
|
||
// or equal to the reference stack pointer.
|
||
const uintptr_t kReferenceSP =
|
||
std::min(std::min(reinterpret_cast<uintptr_t>(&context_1),
|
||
reinterpret_cast<uintptr_t>(&context_2)),
|
||
std::min(reinterpret_cast<uintptr_t>(&pc),
|
||
reinterpret_cast<uintptr_t>(&sp)));
|
||
sp = StackPointerFromContext(context_1);
|
||
EXPECT_PRED2([](uintptr_t actual,
|
||
uintptr_t reference) { return reference - actual < 512u; },
|
||
sp,
|
||
kReferenceSP);
|
||
|
||
// Capture the context again, expecting that the stack pointer stays the same
|
||
// and the program counter increases. Strictly speaking, there’s no guarantee
|
||
// that these conditions will hold, although they do for known compilers even
|
||
// under typical optimization.
|
||
CaptureContext(&context_2);
|
||
|
||
{
|
||
SCOPED_TRACE("context_2");
|
||
ASSERT_NO_FATAL_FAILURE(SanityCheckContext(context_2));
|
||
}
|
||
|
||
EXPECT_EQ(StackPointerFromContext(context_2), sp);
|
||
EXPECT_GT(ProgramCounterFromContext(context_2), pc);
|
||
}
|
||
|
||
TEST(CaptureContext, CaptureContext) {
|
||
ASSERT_NO_FATAL_FAILURE(TestCaptureContext());
|
||
}
|
||
|
||
} // namespace
|
||
} // namespace test
|
||
} // namespace crashpad
|