| // 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 |