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//===-- NativeProcessProtocolTest.cpp ---------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/common/NativeProcessProtocol.h"
#include "llvm/Testing/Support/Error.h"
#include "gmock/gmock.h"
using namespace lldb_private;
using namespace lldb;
using namespace testing;
namespace {
class MockDelegate : public NativeProcessProtocol::NativeDelegate {
public:
MOCK_METHOD1(InitializeDelegate, void(NativeProcessProtocol *Process));
MOCK_METHOD2(ProcessStateChanged,
void(NativeProcessProtocol *Process, StateType State));
MOCK_METHOD1(DidExec, void(NativeProcessProtocol *Process));
};
// NB: This class doesn't use the override keyword to avoid
// -Winconsistent-missing-override warnings from the compiler. The
// inconsistency comes from the overriding definitions in the MOCK_*** macros.
class MockProcess : public NativeProcessProtocol {
public:
MockProcess(NativeDelegate &Delegate, const ArchSpec &Arch,
lldb::pid_t Pid = 1)
: NativeProcessProtocol(Pid, -1, Delegate), Arch(Arch) {}
MOCK_METHOD1(Resume, Status(const ResumeActionList &ResumeActions));
MOCK_METHOD0(Halt, Status());
MOCK_METHOD0(Detach, Status());
MOCK_METHOD1(Signal, Status(int Signo));
MOCK_METHOD0(Kill, Status());
MOCK_METHOD3(AllocateMemory,
Status(size_t Size, uint32_t Permissions, addr_t &Addr));
MOCK_METHOD1(DeallocateMemory, Status(addr_t Addr));
MOCK_METHOD0(GetSharedLibraryInfoAddress, addr_t());
MOCK_METHOD0(UpdateThreads, size_t());
MOCK_CONST_METHOD0(GetAuxvData,
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>());
MOCK_METHOD2(GetLoadedModuleFileSpec,
Status(const char *ModulePath, FileSpec &Spec));
MOCK_METHOD2(GetFileLoadAddress,
Status(const llvm::StringRef &FileName, addr_t &Addr));
const ArchSpec &GetArchitecture() const /*override*/ { return Arch; }
Status SetBreakpoint(lldb::addr_t Addr, uint32_t Size,
bool Hardware) /*override*/ {
if (Hardware)
return SetHardwareBreakpoint(Addr, Size);
else
return SetSoftwareBreakpoint(Addr, Size);
}
// Redirect base class Read/Write Memory methods to functions whose signatures
// are more mock-friendly.
Status ReadMemory(addr_t Addr, void *Buf, size_t Size,
size_t &BytesRead) /*override*/;
Status WriteMemory(addr_t Addr, const void *Buf, size_t Size,
size_t &BytesWritten) /*override*/;
MOCK_METHOD2(ReadMemory,
llvm::Expected<std::vector<uint8_t>>(addr_t Addr, size_t Size));
MOCK_METHOD2(WriteMemory,
llvm::Expected<size_t>(addr_t Addr,
llvm::ArrayRef<uint8_t> Data));
using NativeProcessProtocol::GetSoftwareBreakpointTrapOpcode;
llvm::Expected<std::vector<uint8_t>> ReadMemoryWithoutTrap(addr_t Addr,
size_t Size);
private:
ArchSpec Arch;
};
class FakeMemory {
public:
FakeMemory(llvm::ArrayRef<uint8_t> Data) : Data(Data) {}
llvm::Expected<std::vector<uint8_t>> Read(addr_t Addr, size_t Size);
llvm::Expected<size_t> Write(addr_t Addr, llvm::ArrayRef<uint8_t> Chunk);
private:
std::vector<uint8_t> Data;
};
} // namespace
Status MockProcess::ReadMemory(addr_t Addr, void *Buf, size_t Size,
size_t &BytesRead) {
auto ExpectedMemory = ReadMemory(Addr, Size);
if (!ExpectedMemory) {
BytesRead = 0;
return Status(ExpectedMemory.takeError());
}
BytesRead = ExpectedMemory->size();
assert(BytesRead <= Size);
std::memcpy(Buf, ExpectedMemory->data(), BytesRead);
return Status();
}
Status MockProcess::WriteMemory(addr_t Addr, const void *Buf, size_t Size,
size_t &BytesWritten) {
auto ExpectedBytes = WriteMemory(
Addr, llvm::makeArrayRef(static_cast<const uint8_t *>(Buf), Size));
if (!ExpectedBytes) {
BytesWritten = 0;
return Status(ExpectedBytes.takeError());
}
BytesWritten = *ExpectedBytes;
return Status();
}
llvm::Expected<std::vector<uint8_t>>
MockProcess::ReadMemoryWithoutTrap(addr_t Addr, size_t Size) {
std::vector<uint8_t> Data(Size, 0);
size_t BytesRead;
Status ST = NativeProcessProtocol::ReadMemoryWithoutTrap(
Addr, Data.data(), Data.size(), BytesRead);
if (ST.Fail())
return ST.ToError();
Data.resize(BytesRead);
return std::move(Data);
}
llvm::Expected<std::vector<uint8_t>> FakeMemory::Read(addr_t Addr,
size_t Size) {
if (Addr >= Data.size())
return llvm::createStringError(llvm::inconvertibleErrorCode(),
"Address out of range.");
Size = std::min(Size, Data.size() - (size_t)Addr);
auto Begin = std::next(Data.begin(), Addr);
return std::vector<uint8_t>(Begin, std::next(Begin, Size));
}
llvm::Expected<size_t> FakeMemory::Write(addr_t Addr,
llvm::ArrayRef<uint8_t> Chunk) {
if (Addr >= Data.size())
return llvm::createStringError(llvm::inconvertibleErrorCode(),
"Address out of range.");
size_t Size = std::min(Chunk.size(), Data.size() - (size_t)Addr);
std::copy_n(Chunk.begin(), Size, &Data[Addr]);
return Size;
}
TEST(NativeProcessProtocolTest, SetBreakpoint) {
NiceMock<MockDelegate> DummyDelegate;
MockProcess Process(DummyDelegate, ArchSpec("x86_64-pc-linux"));
auto Trap = cantFail(Process.GetSoftwareBreakpointTrapOpcode(1));
InSequence S;
EXPECT_CALL(Process, ReadMemory(0x47, 1))
.WillOnce(Return(ByMove(std::vector<uint8_t>{0xbb})));
EXPECT_CALL(Process, WriteMemory(0x47, Trap)).WillOnce(Return(ByMove(1)));
EXPECT_CALL(Process, ReadMemory(0x47, 1)).WillOnce(Return(ByMove(Trap)));
EXPECT_THAT_ERROR(Process.SetBreakpoint(0x47, 0, false).ToError(),
llvm::Succeeded());
}
TEST(NativeProcessProtocolTest, SetBreakpointFailRead) {
NiceMock<MockDelegate> DummyDelegate;
MockProcess Process(DummyDelegate, ArchSpec("x86_64-pc-linux"));
EXPECT_CALL(Process, ReadMemory(0x47, 1))
.WillOnce(Return(ByMove(
llvm::createStringError(llvm::inconvertibleErrorCode(), "Foo"))));
EXPECT_THAT_ERROR(Process.SetBreakpoint(0x47, 0, false).ToError(),
llvm::Failed());
}
TEST(NativeProcessProtocolTest, SetBreakpointFailWrite) {
NiceMock<MockDelegate> DummyDelegate;
MockProcess Process(DummyDelegate, ArchSpec("x86_64-pc-linux"));
auto Trap = cantFail(Process.GetSoftwareBreakpointTrapOpcode(1));
InSequence S;
EXPECT_CALL(Process, ReadMemory(0x47, 1))
.WillOnce(Return(ByMove(std::vector<uint8_t>{0xbb})));
EXPECT_CALL(Process, WriteMemory(0x47, Trap))
.WillOnce(Return(ByMove(
llvm::createStringError(llvm::inconvertibleErrorCode(), "Foo"))));
EXPECT_THAT_ERROR(Process.SetBreakpoint(0x47, 0, false).ToError(),
llvm::Failed());
}
TEST(NativeProcessProtocolTest, SetBreakpointFailVerify) {
NiceMock<MockDelegate> DummyDelegate;
MockProcess Process(DummyDelegate, ArchSpec("x86_64-pc-linux"));
auto Trap = cantFail(Process.GetSoftwareBreakpointTrapOpcode(1));
InSequence S;
EXPECT_CALL(Process, ReadMemory(0x47, 1))
.WillOnce(Return(ByMove(std::vector<uint8_t>{0xbb})));
EXPECT_CALL(Process, WriteMemory(0x47, Trap)).WillOnce(Return(ByMove(1)));
EXPECT_CALL(Process, ReadMemory(0x47, 1))
.WillOnce(Return(ByMove(
llvm::createStringError(llvm::inconvertibleErrorCode(), "Foo"))));
EXPECT_THAT_ERROR(Process.SetBreakpoint(0x47, 0, false).ToError(),
llvm::Failed());
}
TEST(NativeProcessProtocolTest, ReadMemoryWithoutTrap) {
NiceMock<MockDelegate> DummyDelegate;
MockProcess Process(DummyDelegate, ArchSpec("aarch64-pc-linux"));
FakeMemory M{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}};
EXPECT_CALL(Process, ReadMemory(_, _))
.WillRepeatedly(Invoke(&M, &FakeMemory::Read));
EXPECT_CALL(Process, WriteMemory(_, _))
.WillRepeatedly(Invoke(&M, &FakeMemory::Write));
EXPECT_THAT_ERROR(Process.SetBreakpoint(0x4, 0, false).ToError(),
llvm::Succeeded());
EXPECT_THAT_EXPECTED(
Process.ReadMemoryWithoutTrap(0, 10),
llvm::HasValue(std::vector<uint8_t>{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}));
EXPECT_THAT_EXPECTED(Process.ReadMemoryWithoutTrap(0, 6),
llvm::HasValue(std::vector<uint8_t>{0, 1, 2, 3, 4, 5}));
EXPECT_THAT_EXPECTED(Process.ReadMemoryWithoutTrap(6, 4),
llvm::HasValue(std::vector<uint8_t>{6, 7, 8, 9}));
EXPECT_THAT_EXPECTED(Process.ReadMemoryWithoutTrap(6, 2),
llvm::HasValue(std::vector<uint8_t>{6, 7}));
EXPECT_THAT_EXPECTED(Process.ReadMemoryWithoutTrap(4, 2),
llvm::HasValue(std::vector<uint8_t>{4, 5}));
}
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