mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-31 01:43:03 +08:00
e83103c805
Fuchsia enables safe-stack by default in the compiler. Disable it for the test function so that a candidate RSP value can be found by using the value of locals on the stack. (This also reduces the function prolog size sufficiently for the PC comparison to work, otherwise it required 75 bytes for the delta comparison.) Bug: crashpad:196 Change-Id: I2adbcee93c90dbc415309b79e3d16e9c4635f989 Reviewed-on: https://chromium-review.googlesource.com/1000140 Reviewed-by: Joshua Peraza <jperaza@chromium.org> Commit-Queue: Scott Graham <scottmg@chromium.org>
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
// Copyright 2018 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_test_util.h"
|
|
|
|
#include "base/logging.h"
|
|
#include "gtest/gtest.h"
|
|
#include "util/misc/from_pointer_cast.h"
|
|
|
|
namespace crashpad {
|
|
namespace test {
|
|
|
|
#if defined(ARCH_CPU_X86_64)
|
|
static_assert(offsetof(NativeCPUContext, uc_mcontext) == 0x28,
|
|
"unexpected mcontext offset");
|
|
static_assert(offsetof(NativeCPUContext, uc_mcontext.gregs[REG_RSP]) == 0xa0,
|
|
"unexpected rsp offset");
|
|
static_assert(offsetof(NativeCPUContext, uc_mcontext.gregs[REG_RIP]) == 0xa8,
|
|
"unexpected rip offset");
|
|
#endif // ARCH_CPU_X86_64
|
|
|
|
void SanityCheckContext(const NativeCPUContext& context) {
|
|
#if defined(ARCH_CPU_X86_64)
|
|
EXPECT_EQ(context.uc_mcontext.gregs[REG_RDI],
|
|
FromPointerCast<intptr_t>(&context));
|
|
#elif defined(ARCH_CPU_ARM64)
|
|
EXPECT_EQ(context.uc_mcontext.regs[0], FromPointerCast<uintptr_t>(&context));
|
|
#endif
|
|
}
|
|
|
|
uintptr_t ProgramCounterFromContext(const NativeCPUContext& context) {
|
|
#if defined(ARCH_CPU_X86_64)
|
|
return context.uc_mcontext.gregs[REG_RIP];
|
|
#elif defined(ARCH_CPU_ARM64)
|
|
return context.uc_mcontext.pc;
|
|
#endif
|
|
}
|
|
|
|
uintptr_t StackPointerFromContext(const NativeCPUContext& context) {
|
|
#if defined(ARCH_CPU_X86_64)
|
|
return context.uc_mcontext.gregs[REG_RSP];
|
|
#elif defined(ARCH_CPU_ARM64)
|
|
return context.uc_mcontext.sp;
|
|
#endif
|
|
}
|
|
|
|
} // namespace test
|
|
} // namespace crashpad
|