| //===-- CommunicationKDP.cpp ------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "CommunicationKDP.h" |
| |
| // C Includes |
| #include <errno.h> |
| #include <limits.h> |
| #include <string.h> |
| |
| // C++ Includes |
| |
| // Other libraries and framework includes |
| #include "lldb/Core/DumpDataExtractor.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Utility/DataBufferHeap.h" |
| #include "lldb/Utility/DataExtractor.h" |
| #include "lldb/Utility/FileSpec.h" |
| #include "lldb/Utility/Log.h" |
| #include "lldb/Utility/UUID.h" |
| |
| // Project includes |
| #include "ProcessKDPLog.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| //---------------------------------------------------------------------- |
| // CommunicationKDP constructor |
| //---------------------------------------------------------------------- |
| CommunicationKDP::CommunicationKDP(const char *comm_name) |
| : Communication(comm_name), m_addr_byte_size(4), |
| m_byte_order(eByteOrderLittle), m_packet_timeout(5), m_sequence_mutex(), |
| m_is_running(false), m_session_key(0u), m_request_sequence_id(0u), |
| m_exception_sequence_id(0u), m_kdp_version_version(0u), |
| m_kdp_version_feature(0u), m_kdp_hostinfo_cpu_mask(0u), |
| m_kdp_hostinfo_cpu_type(0u), m_kdp_hostinfo_cpu_subtype(0u) {} |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| CommunicationKDP::~CommunicationKDP() { |
| if (IsConnected()) { |
| Disconnect(); |
| } |
| } |
| |
| bool CommunicationKDP::SendRequestPacket( |
| const PacketStreamType &request_packet) { |
| std::lock_guard<std::recursive_mutex> guard(m_sequence_mutex); |
| return SendRequestPacketNoLock(request_packet); |
| } |
| |
| void CommunicationKDP::MakeRequestPacketHeader(CommandType request_type, |
| PacketStreamType &request_packet, |
| uint16_t request_length) { |
| request_packet.Clear(); |
| request_packet.PutHex8(request_type | |
| ePacketTypeRequest); // Set the request type |
| request_packet.PutHex8(m_request_sequence_id++); // Sequence number |
| request_packet.PutHex16( |
| request_length); // Length of the packet including this header |
| request_packet.PutHex32(m_session_key); // Session key |
| } |
| |
| bool CommunicationKDP::SendRequestAndGetReply( |
| const CommandType command, const PacketStreamType &request_packet, |
| DataExtractor &reply_packet) { |
| if (IsRunning()) { |
| Log *log(ProcessKDPLog::GetLogIfAllCategoriesSet(KDP_LOG_PACKETS)); |
| if (log) { |
| PacketStreamType log_strm; |
| DumpPacket(log_strm, request_packet.GetData(), request_packet.GetSize()); |
| log->Printf("error: kdp running, not sending packet: %.*s", |
| (uint32_t)log_strm.GetSize(), log_strm.GetData()); |
| } |
| return false; |
| } |
| |
| std::lock_guard<std::recursive_mutex> guard(m_sequence_mutex); |
| #ifdef LLDB_CONFIGURATION_DEBUG |
| // NOTE: this only works for packets that are in native endian byte order |
| assert(request_packet.GetSize() == |
| *((const uint16_t *)(request_packet.GetData() + 2))); |
| #endif |
| lldb::offset_t offset = 1; |
| const uint32_t num_retries = 3; |
| for (uint32_t i = 0; i < num_retries; ++i) { |
| if (SendRequestPacketNoLock(request_packet)) { |
| const uint8_t request_sequence_id = (uint8_t)request_packet.GetData()[1]; |
| while (1) { |
| if (WaitForPacketWithTimeoutMicroSecondsNoLock( |
| reply_packet, |
| std::chrono::microseconds(GetPacketTimeout()).count())) { |
| offset = 0; |
| const uint8_t reply_command = reply_packet.GetU8(&offset); |
| const uint8_t reply_sequence_id = reply_packet.GetU8(&offset); |
| if (request_sequence_id == reply_sequence_id) { |
| // The sequent ID was correct, now verify we got the response we |
| // were looking for |
| if ((reply_command & eCommandTypeMask) == command) { |
| // Success |
| if (command == KDP_RESUMECPUS) |
| m_is_running.SetValue(true, eBroadcastAlways); |
| return true; |
| } else { |
| // Failed to get the correct response, bail |
| reply_packet.Clear(); |
| return false; |
| } |
| } else if (reply_sequence_id > request_sequence_id) { |
| // Sequence ID was greater than the sequence ID of the packet we |
| // sent, something is really wrong... |
| reply_packet.Clear(); |
| return false; |
| } else { |
| // The reply sequence ID was less than our current packet's |
| // sequence ID so we should keep trying to get a response because |
| // this was a response for a previous packet that we must have |
| // retried. |
| } |
| } else { |
| // Break and retry sending the packet as we didn't get a response due |
| // to timeout |
| break; |
| } |
| } |
| } |
| } |
| reply_packet.Clear(); |
| return false; |
| } |
| |
| bool CommunicationKDP::SendRequestPacketNoLock( |
| const PacketStreamType &request_packet) { |
| if (IsConnected()) { |
| const char *packet_data = request_packet.GetData(); |
| const size_t packet_size = request_packet.GetSize(); |
| |
| Log *log(ProcessKDPLog::GetLogIfAllCategoriesSet(KDP_LOG_PACKETS)); |
| if (log) { |
| PacketStreamType log_strm; |
| DumpPacket(log_strm, packet_data, packet_size); |
| log->Printf("%.*s", (uint32_t)log_strm.GetSize(), log_strm.GetData()); |
| } |
| ConnectionStatus status = eConnectionStatusSuccess; |
| |
| size_t bytes_written = Write(packet_data, packet_size, status, NULL); |
| |
| if (bytes_written == packet_size) |
| return true; |
| |
| if (log) |
| log->Printf("error: failed to send packet entire packet %" PRIu64 |
| " of %" PRIu64 " bytes sent", |
| (uint64_t)bytes_written, (uint64_t)packet_size); |
| } |
| return false; |
| } |
| |
| bool CommunicationKDP::GetSequenceMutex( |
| std::unique_lock<std::recursive_mutex> &lock) { |
| return (lock = std::unique_lock<std::recursive_mutex>(m_sequence_mutex, |
| std::try_to_lock)) |
| .owns_lock(); |
| } |
| |
| bool CommunicationKDP::WaitForNotRunningPrivate( |
| const std::chrono::microseconds &timeout) { |
| return m_is_running.WaitForValueEqualTo(false, timeout); |
| } |
| |
| size_t |
| CommunicationKDP::WaitForPacketWithTimeoutMicroSeconds(DataExtractor &packet, |
| uint32_t timeout_usec) { |
| std::lock_guard<std::recursive_mutex> guard(m_sequence_mutex); |
| return WaitForPacketWithTimeoutMicroSecondsNoLock(packet, timeout_usec); |
| } |
| |
| size_t CommunicationKDP::WaitForPacketWithTimeoutMicroSecondsNoLock( |
| DataExtractor &packet, uint32_t timeout_usec) { |
| uint8_t buffer[8192]; |
| Status error; |
| |
| Log *log(ProcessKDPLog::GetLogIfAllCategoriesSet(KDP_LOG_PACKETS)); |
| |
| // Check for a packet from our cache first without trying any reading... |
| if (CheckForPacket(NULL, 0, packet)) |
| return packet.GetByteSize(); |
| |
| bool timed_out = false; |
| while (IsConnected() && !timed_out) { |
| lldb::ConnectionStatus status = eConnectionStatusNoConnection; |
| size_t bytes_read = Read(buffer, sizeof(buffer), |
| timeout_usec == UINT32_MAX |
| ? Timeout<std::micro>(llvm::None) |
| : std::chrono::microseconds(timeout_usec), |
| status, &error); |
| |
| LLDB_LOGV(log, |
| "Read (buffer, sizeof(buffer), timeout_usec = 0x{0:x}, " |
| "status = {1}, error = {2}) => bytes_read = {4}", |
| timeout_usec, |
| Communication::ConnectionStatusAsCString(status), |
| error, bytes_read); |
| |
| if (bytes_read > 0) { |
| if (CheckForPacket(buffer, bytes_read, packet)) |
| return packet.GetByteSize(); |
| } else { |
| switch (status) { |
| case eConnectionStatusInterrupted: |
| case eConnectionStatusTimedOut: |
| timed_out = true; |
| break; |
| case eConnectionStatusSuccess: |
| // printf ("status = success but error = %s\n", |
| // error.AsCString("<invalid>")); |
| break; |
| |
| case eConnectionStatusEndOfFile: |
| case eConnectionStatusNoConnection: |
| case eConnectionStatusLostConnection: |
| case eConnectionStatusError: |
| Disconnect(); |
| break; |
| } |
| } |
| } |
| packet.Clear(); |
| return 0; |
| } |
| |
| bool CommunicationKDP::CheckForPacket(const uint8_t *src, size_t src_len, |
| DataExtractor &packet) { |
| // Put the packet data into the buffer in a thread safe fashion |
| std::lock_guard<std::recursive_mutex> guard(m_bytes_mutex); |
| |
| Log *log(ProcessKDPLog::GetLogIfAllCategoriesSet(KDP_LOG_PACKETS)); |
| |
| if (src && src_len > 0) { |
| if (log && log->GetVerbose()) { |
| PacketStreamType log_strm; |
| DumpHexBytes(&log_strm, src, src_len, UINT32_MAX, LLDB_INVALID_ADDRESS); |
| log->Printf("CommunicationKDP::%s adding %u bytes: %s", __FUNCTION__, |
| (uint32_t)src_len, log_strm.GetData()); |
| } |
| m_bytes.append((const char *)src, src_len); |
| } |
| |
| // Make sure we at least have enough bytes for a packet header |
| const size_t bytes_available = m_bytes.size(); |
| if (bytes_available >= 8) { |
| packet.SetData(&m_bytes[0], bytes_available, m_byte_order); |
| lldb::offset_t offset = 0; |
| uint8_t reply_command = packet.GetU8(&offset); |
| switch (reply_command) { |
| case ePacketTypeRequest | KDP_EXCEPTION: |
| case ePacketTypeRequest | KDP_TERMINATION: |
| // We got an exception request, so be sure to send an ACK |
| { |
| PacketStreamType request_ack_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| // Set the reply but and make the ACK packet |
| request_ack_packet.PutHex8(reply_command | ePacketTypeReply); |
| request_ack_packet.PutHex8(packet.GetU8(&offset)); |
| request_ack_packet.PutHex16(packet.GetU16(&offset)); |
| request_ack_packet.PutHex32(packet.GetU32(&offset)); |
| m_is_running.SetValue(false, eBroadcastAlways); |
| // Ack to the exception or termination |
| SendRequestPacketNoLock(request_ack_packet); |
| } |
| // Fall through to case below to get packet contents |
| LLVM_FALLTHROUGH; |
| case ePacketTypeReply | KDP_CONNECT: |
| case ePacketTypeReply | KDP_DISCONNECT: |
| case ePacketTypeReply | KDP_HOSTINFO: |
| case ePacketTypeReply | KDP_VERSION: |
| case ePacketTypeReply | KDP_MAXBYTES: |
| case ePacketTypeReply | KDP_READMEM: |
| case ePacketTypeReply | KDP_WRITEMEM: |
| case ePacketTypeReply | KDP_READREGS: |
| case ePacketTypeReply | KDP_WRITEREGS: |
| case ePacketTypeReply | KDP_LOAD: |
| case ePacketTypeReply | KDP_IMAGEPATH: |
| case ePacketTypeReply | KDP_SUSPEND: |
| case ePacketTypeReply | KDP_RESUMECPUS: |
| case ePacketTypeReply | KDP_BREAKPOINT_SET: |
| case ePacketTypeReply | KDP_BREAKPOINT_REMOVE: |
| case ePacketTypeReply | KDP_REGIONS: |
| case ePacketTypeReply | KDP_REATTACH: |
| case ePacketTypeReply | KDP_HOSTREBOOT: |
| case ePacketTypeReply | KDP_READMEM64: |
| case ePacketTypeReply | KDP_WRITEMEM64: |
| case ePacketTypeReply | KDP_BREAKPOINT_SET64: |
| case ePacketTypeReply | KDP_BREAKPOINT_REMOVE64: |
| case ePacketTypeReply | KDP_KERNELVERSION: |
| case ePacketTypeReply | KDP_READPHYSMEM64: |
| case ePacketTypeReply | KDP_WRITEPHYSMEM64: |
| case ePacketTypeReply | KDP_READIOPORT: |
| case ePacketTypeReply | KDP_WRITEIOPORT: |
| case ePacketTypeReply | KDP_READMSR64: |
| case ePacketTypeReply | KDP_WRITEMSR64: |
| case ePacketTypeReply | KDP_DUMPINFO: { |
| offset = 2; |
| const uint16_t length = packet.GetU16(&offset); |
| if (length <= bytes_available) { |
| // We have an entire packet ready, we need to copy the data bytes into |
| // a buffer that will be owned by the packet and erase the bytes from |
| // our communcation buffer "m_bytes" |
| packet.SetData(DataBufferSP(new DataBufferHeap(&m_bytes[0], length))); |
| m_bytes.erase(0, length); |
| |
| if (log) { |
| PacketStreamType log_strm; |
| DumpPacket(log_strm, packet); |
| |
| log->Printf("%.*s", (uint32_t)log_strm.GetSize(), log_strm.GetData()); |
| } |
| return true; |
| } |
| } break; |
| |
| default: |
| // Unrecognized reply command byte, erase this byte and try to get back |
| // on track |
| if (log) |
| log->Printf("CommunicationKDP::%s: tossing junk byte: 0x%2.2x", |
| __FUNCTION__, (uint8_t)m_bytes[0]); |
| m_bytes.erase(0, 1); |
| break; |
| } |
| } |
| packet.Clear(); |
| return false; |
| } |
| |
| bool CommunicationKDP::SendRequestConnect(uint16_t reply_port, |
| uint16_t exc_port, |
| const char *greeting) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| if (greeting == NULL) |
| greeting = ""; |
| |
| const CommandType command = KDP_CONNECT; |
| // Length is 82 uint16_t and the length of the greeting C string with the |
| // terminating NULL |
| const uint32_t command_length = 8 + 2 + 2 + ::strlen(greeting) + 1; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| // Always send connect ports as little endian |
| request_packet.SetByteOrder(eByteOrderLittle); |
| request_packet.PutHex16(htons(reply_port)); |
| request_packet.PutHex16(htons(exc_port)); |
| request_packet.SetByteOrder(m_byte_order); |
| request_packet.PutCString(greeting); |
| DataExtractor reply_packet; |
| return SendRequestAndGetReply(command, request_packet, reply_packet); |
| } |
| |
| void CommunicationKDP::ClearKDPSettings() { |
| m_request_sequence_id = 0; |
| m_kdp_version_version = 0; |
| m_kdp_version_feature = 0; |
| m_kdp_hostinfo_cpu_mask = 0; |
| m_kdp_hostinfo_cpu_type = 0; |
| m_kdp_hostinfo_cpu_subtype = 0; |
| } |
| |
| bool CommunicationKDP::SendRequestReattach(uint16_t reply_port) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_REATTACH; |
| // Length is 8 bytes for the header plus 2 bytes for the reply UDP port |
| const uint32_t command_length = 8 + 2; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| // Always send connect ports as little endian |
| request_packet.SetByteOrder(eByteOrderLittle); |
| request_packet.PutHex16(htons(reply_port)); |
| request_packet.SetByteOrder(m_byte_order); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| // Reset the sequence ID to zero for reattach |
| ClearKDPSettings(); |
| lldb::offset_t offset = 4; |
| m_session_key = reply_packet.GetU32(&offset); |
| return true; |
| } |
| return false; |
| } |
| |
| uint32_t CommunicationKDP::GetVersion() { |
| if (!VersionIsValid()) |
| SendRequestVersion(); |
| return m_kdp_version_version; |
| } |
| |
| uint32_t CommunicationKDP::GetFeatureFlags() { |
| if (!VersionIsValid()) |
| SendRequestVersion(); |
| return m_kdp_version_feature; |
| } |
| |
| bool CommunicationKDP::SendRequestVersion() { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_VERSION; |
| const uint32_t command_length = 8; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| m_kdp_version_version = reply_packet.GetU32(&offset); |
| m_kdp_version_feature = reply_packet.GetU32(&offset); |
| return true; |
| } |
| return false; |
| } |
| |
| uint32_t CommunicationKDP::GetCPUMask() { |
| if (!HostInfoIsValid()) |
| SendRequestHostInfo(); |
| return m_kdp_hostinfo_cpu_mask; |
| } |
| |
| uint32_t CommunicationKDP::GetCPUType() { |
| if (!HostInfoIsValid()) |
| SendRequestHostInfo(); |
| return m_kdp_hostinfo_cpu_type; |
| } |
| |
| uint32_t CommunicationKDP::GetCPUSubtype() { |
| if (!HostInfoIsValid()) |
| SendRequestHostInfo(); |
| return m_kdp_hostinfo_cpu_subtype; |
| } |
| |
| lldb_private::UUID CommunicationKDP::GetUUID() { |
| UUID uuid; |
| if (GetKernelVersion() == NULL) |
| return uuid; |
| |
| if (m_kernel_version.find("UUID=") == std::string::npos) |
| return uuid; |
| |
| size_t p = m_kernel_version.find("UUID=") + strlen("UUID="); |
| std::string uuid_str = m_kernel_version.substr(p, 36); |
| if (uuid_str.size() < 32) |
| return uuid; |
| |
| if (uuid.SetFromStringRef(uuid_str) == 0) { |
| UUID invalid_uuid; |
| return invalid_uuid; |
| } |
| |
| return uuid; |
| } |
| |
| bool CommunicationKDP::RemoteIsEFI() { |
| if (GetKernelVersion() == NULL) |
| return false; |
| if (strncmp(m_kernel_version.c_str(), "EFI", 3) == 0) |
| return true; |
| else |
| return false; |
| } |
| |
| bool CommunicationKDP::RemoteIsDarwinKernel() { |
| if (GetKernelVersion() == NULL) |
| return false; |
| if (m_kernel_version.find("Darwin Kernel") != std::string::npos) |
| return true; |
| else |
| return false; |
| } |
| |
| lldb::addr_t CommunicationKDP::GetLoadAddress() { |
| if (GetKernelVersion() == NULL) |
| return LLDB_INVALID_ADDRESS; |
| |
| if (m_kernel_version.find("stext=") == std::string::npos) |
| return LLDB_INVALID_ADDRESS; |
| size_t p = m_kernel_version.find("stext=") + strlen("stext="); |
| if (m_kernel_version[p] != '0' || m_kernel_version[p + 1] != 'x') |
| return LLDB_INVALID_ADDRESS; |
| |
| addr_t kernel_load_address; |
| errno = 0; |
| kernel_load_address = ::strtoul(m_kernel_version.c_str() + p, NULL, 16); |
| if (errno != 0 || kernel_load_address == 0) |
| return LLDB_INVALID_ADDRESS; |
| |
| return kernel_load_address; |
| } |
| |
| bool CommunicationKDP::SendRequestHostInfo() { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_HOSTINFO; |
| const uint32_t command_length = 8; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| m_kdp_hostinfo_cpu_mask = reply_packet.GetU32(&offset); |
| m_kdp_hostinfo_cpu_type = reply_packet.GetU32(&offset); |
| m_kdp_hostinfo_cpu_subtype = reply_packet.GetU32(&offset); |
| |
| ArchSpec kernel_arch; |
| kernel_arch.SetArchitecture(eArchTypeMachO, m_kdp_hostinfo_cpu_type, |
| m_kdp_hostinfo_cpu_subtype); |
| |
| m_addr_byte_size = kernel_arch.GetAddressByteSize(); |
| m_byte_order = kernel_arch.GetByteOrder(); |
| return true; |
| } |
| return false; |
| } |
| |
| const char *CommunicationKDP::GetKernelVersion() { |
| if (m_kernel_version.empty()) |
| SendRequestKernelVersion(); |
| return m_kernel_version.c_str(); |
| } |
| |
| bool CommunicationKDP::SendRequestKernelVersion() { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_KERNELVERSION; |
| const uint32_t command_length = 8; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| const char *kernel_version_cstr = reply_packet.PeekCStr(8); |
| if (kernel_version_cstr && kernel_version_cstr[0]) |
| m_kernel_version.assign(kernel_version_cstr); |
| return true; |
| } |
| return false; |
| } |
| |
| bool CommunicationKDP::SendRequestDisconnect() { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_DISCONNECT; |
| const uint32_t command_length = 8; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| // Are we supposed to get a reply for disconnect? |
| } |
| ClearKDPSettings(); |
| return true; |
| } |
| |
| uint32_t CommunicationKDP::SendRequestReadMemory(lldb::addr_t addr, void *dst, |
| uint32_t dst_len, |
| Status &error) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| bool use_64 = (GetVersion() >= 11); |
| uint32_t command_addr_byte_size = use_64 ? 8 : 4; |
| const CommandType command = use_64 ? KDP_READMEM64 : KDP_READMEM; |
| // Size is header + address size + uint32_t length |
| const uint32_t command_length = 8 + command_addr_byte_size + 4; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| request_packet.PutMaxHex64(addr, command_addr_byte_size); |
| request_packet.PutHex32(dst_len); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| uint32_t kdp_error = reply_packet.GetU32(&offset); |
| uint32_t src_len = reply_packet.GetByteSize() - 12; |
| |
| if (src_len > 0) { |
| const void *src = reply_packet.GetData(&offset, src_len); |
| if (src) { |
| ::memcpy(dst, src, src_len); |
| error.Clear(); |
| return src_len; |
| } |
| } |
| if (kdp_error) |
| error.SetErrorStringWithFormat("kdp read memory failed (error %u)", |
| kdp_error); |
| else |
| error.SetErrorString("kdp read memory failed"); |
| } else { |
| error.SetErrorString("failed to send packet"); |
| } |
| return 0; |
| } |
| |
| uint32_t CommunicationKDP::SendRequestWriteMemory(lldb::addr_t addr, |
| const void *src, |
| uint32_t src_len, |
| Status &error) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| bool use_64 = (GetVersion() >= 11); |
| uint32_t command_addr_byte_size = use_64 ? 8 : 4; |
| const CommandType command = use_64 ? KDP_WRITEMEM64 : KDP_WRITEMEM; |
| // Size is header + address size + uint32_t length |
| const uint32_t command_length = 8 + command_addr_byte_size + 4 + src_len; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| request_packet.PutMaxHex64(addr, command_addr_byte_size); |
| request_packet.PutHex32(src_len); |
| request_packet.PutRawBytes(src, src_len); |
| |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| uint32_t kdp_error = reply_packet.GetU32(&offset); |
| if (kdp_error) |
| error.SetErrorStringWithFormat("kdp write memory failed (error %u)", |
| kdp_error); |
| else { |
| error.Clear(); |
| return src_len; |
| } |
| } else { |
| error.SetErrorString("failed to send packet"); |
| } |
| return 0; |
| } |
| |
| bool CommunicationKDP::SendRawRequest( |
| uint8_t command_byte, |
| const void *src, // Raw packet payload bytes |
| uint32_t src_len, // Raw packet payload length |
| DataExtractor &reply_packet, Status &error) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| // Size is header + address size + uint32_t length |
| const uint32_t command_length = 8 + src_len; |
| const CommandType command = (CommandType)command_byte; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| request_packet.PutRawBytes(src, src_len); |
| |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| uint32_t kdp_error = reply_packet.GetU32(&offset); |
| if (kdp_error && (command_byte != KDP_DUMPINFO)) |
| error.SetErrorStringWithFormat("request packet 0x%8.8x failed (error %u)", |
| command_byte, kdp_error); |
| else { |
| error.Clear(); |
| return true; |
| } |
| } else { |
| error.SetErrorString("failed to send packet"); |
| } |
| return false; |
| } |
| |
| const char *CommunicationKDP::GetCommandAsCString(uint8_t command) { |
| switch (command) { |
| case KDP_CONNECT: |
| return "KDP_CONNECT"; |
| case KDP_DISCONNECT: |
| return "KDP_DISCONNECT"; |
| case KDP_HOSTINFO: |
| return "KDP_HOSTINFO"; |
| case KDP_VERSION: |
| return "KDP_VERSION"; |
| case KDP_MAXBYTES: |
| return "KDP_MAXBYTES"; |
| case KDP_READMEM: |
| return "KDP_READMEM"; |
| case KDP_WRITEMEM: |
| return "KDP_WRITEMEM"; |
| case KDP_READREGS: |
| return "KDP_READREGS"; |
| case KDP_WRITEREGS: |
| return "KDP_WRITEREGS"; |
| case KDP_LOAD: |
| return "KDP_LOAD"; |
| case KDP_IMAGEPATH: |
| return "KDP_IMAGEPATH"; |
| case KDP_SUSPEND: |
| return "KDP_SUSPEND"; |
| case KDP_RESUMECPUS: |
| return "KDP_RESUMECPUS"; |
| case KDP_EXCEPTION: |
| return "KDP_EXCEPTION"; |
| case KDP_TERMINATION: |
| return "KDP_TERMINATION"; |
| case KDP_BREAKPOINT_SET: |
| return "KDP_BREAKPOINT_SET"; |
| case KDP_BREAKPOINT_REMOVE: |
| return "KDP_BREAKPOINT_REMOVE"; |
| case KDP_REGIONS: |
| return "KDP_REGIONS"; |
| case KDP_REATTACH: |
| return "KDP_REATTACH"; |
| case KDP_HOSTREBOOT: |
| return "KDP_HOSTREBOOT"; |
| case KDP_READMEM64: |
| return "KDP_READMEM64"; |
| case KDP_WRITEMEM64: |
| return "KDP_WRITEMEM64"; |
| case KDP_BREAKPOINT_SET64: |
| return "KDP_BREAKPOINT64_SET"; |
| case KDP_BREAKPOINT_REMOVE64: |
| return "KDP_BREAKPOINT64_REMOVE"; |
| case KDP_KERNELVERSION: |
| return "KDP_KERNELVERSION"; |
| case KDP_READPHYSMEM64: |
| return "KDP_READPHYSMEM64"; |
| case KDP_WRITEPHYSMEM64: |
| return "KDP_WRITEPHYSMEM64"; |
| case KDP_READIOPORT: |
| return "KDP_READIOPORT"; |
| case KDP_WRITEIOPORT: |
| return "KDP_WRITEIOPORT"; |
| case KDP_READMSR64: |
| return "KDP_READMSR64"; |
| case KDP_WRITEMSR64: |
| return "KDP_WRITEMSR64"; |
| case KDP_DUMPINFO: |
| return "KDP_DUMPINFO"; |
| } |
| return NULL; |
| } |
| |
| void CommunicationKDP::DumpPacket(Stream &s, const void *data, |
| uint32_t data_len) { |
| DataExtractor extractor(data, data_len, m_byte_order, m_addr_byte_size); |
| DumpPacket(s, extractor); |
| } |
| |
| void CommunicationKDP::DumpPacket(Stream &s, const DataExtractor &packet) { |
| const char *error_desc = NULL; |
| if (packet.GetByteSize() < 8) { |
| error_desc = "error: invalid packet (too short): "; |
| } else { |
| lldb::offset_t offset = 0; |
| const uint8_t first_packet_byte = packet.GetU8(&offset); |
| const uint8_t sequence_id = packet.GetU8(&offset); |
| const uint16_t length = packet.GetU16(&offset); |
| const uint32_t key = packet.GetU32(&offset); |
| const CommandType command = ExtractCommand(first_packet_byte); |
| const char *command_name = GetCommandAsCString(command); |
| if (command_name) { |
| const bool is_reply = ExtractIsReply(first_packet_byte); |
| s.Printf("(running=%i) %s %24s: 0x%2.2x 0x%2.2x 0x%4.4x 0x%8.8x ", |
| IsRunning(), is_reply ? "<--" : "-->", command_name, |
| first_packet_byte, sequence_id, length, key); |
| |
| if (is_reply) { |
| // Dump request reply packets |
| switch (command) { |
| // Commands that return a single 32 bit error |
| case KDP_CONNECT: |
| case KDP_WRITEMEM: |
| case KDP_WRITEMEM64: |
| case KDP_BREAKPOINT_SET: |
| case KDP_BREAKPOINT_REMOVE: |
| case KDP_BREAKPOINT_SET64: |
| case KDP_BREAKPOINT_REMOVE64: |
| case KDP_WRITEREGS: |
| case KDP_LOAD: |
| case KDP_WRITEIOPORT: |
| case KDP_WRITEMSR64: { |
| const uint32_t error = packet.GetU32(&offset); |
| s.Printf(" (error=0x%8.8x)", error); |
| } break; |
| |
| case KDP_DISCONNECT: |
| case KDP_REATTACH: |
| case KDP_HOSTREBOOT: |
| case KDP_SUSPEND: |
| case KDP_RESUMECPUS: |
| case KDP_EXCEPTION: |
| case KDP_TERMINATION: |
| // No return value for the reply, just the header to ack |
| s.PutCString(" ()"); |
| break; |
| |
| case KDP_HOSTINFO: { |
| const uint32_t cpu_mask = packet.GetU32(&offset); |
| const uint32_t cpu_type = packet.GetU32(&offset); |
| const uint32_t cpu_subtype = packet.GetU32(&offset); |
| s.Printf(" (cpu_mask=0x%8.8x, cpu_type=0x%8.8x, cpu_subtype=0x%8.8x)", |
| cpu_mask, cpu_type, cpu_subtype); |
| } break; |
| |
| case KDP_VERSION: { |
| const uint32_t version = packet.GetU32(&offset); |
| const uint32_t feature = packet.GetU32(&offset); |
| s.Printf(" (version=0x%8.8x, feature=0x%8.8x)", version, feature); |
| } break; |
| |
| case KDP_REGIONS: { |
| const uint32_t region_count = packet.GetU32(&offset); |
| s.Printf(" (count = %u", region_count); |
| for (uint32_t i = 0; i < region_count; ++i) { |
| const addr_t region_addr = packet.GetPointer(&offset); |
| const uint32_t region_size = packet.GetU32(&offset); |
| const uint32_t region_prot = packet.GetU32(&offset); |
| s.Printf("\n\tregion[%" PRIu64 "] = { range = [0x%16.16" PRIx64 |
| " - 0x%16.16" PRIx64 "), size = 0x%8.8x, prot = %s }", |
| region_addr, region_addr, region_addr + region_size, |
| region_size, GetPermissionsAsCString(region_prot)); |
| } |
| } break; |
| |
| case KDP_READMEM: |
| case KDP_READMEM64: |
| case KDP_READPHYSMEM64: { |
| const uint32_t error = packet.GetU32(&offset); |
| const uint32_t count = packet.GetByteSize() - offset; |
| s.Printf(" (error = 0x%8.8x:\n", error); |
| if (count > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within "packet" |
| eFormatBytesWithASCII, // Format to use |
| 1, // Size of each item |
| // in bytes |
| count, // Number of items |
| 16, // Number per line |
| m_last_read_memory_addr, // Don't show addresses |
| // before each line |
| 0, 0); // No bitfields |
| } break; |
| |
| case KDP_READREGS: { |
| const uint32_t error = packet.GetU32(&offset); |
| const uint32_t count = packet.GetByteSize() - offset; |
| s.Printf(" (error = 0x%8.8x regs:\n", error); |
| if (count > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within "packet" |
| eFormatHex, // Format to use |
| m_addr_byte_size, // Size of each item |
| // in bytes |
| count / m_addr_byte_size, // Number of items |
| 16 / m_addr_byte_size, // Number per line |
| LLDB_INVALID_ADDRESS, |
| // Don't |
| // show addresses before |
| // each line |
| 0, 0); // No bitfields |
| } break; |
| |
| case KDP_KERNELVERSION: { |
| const char *kernel_version = packet.PeekCStr(8); |
| s.Printf(" (version = \"%s\")", kernel_version); |
| } break; |
| |
| case KDP_MAXBYTES: { |
| const uint32_t max_bytes = packet.GetU32(&offset); |
| s.Printf(" (max_bytes = 0x%8.8x (%u))", max_bytes, max_bytes); |
| } break; |
| case KDP_IMAGEPATH: { |
| const char *path = packet.GetCStr(&offset); |
| s.Printf(" (path = \"%s\")", path); |
| } break; |
| |
| case KDP_READIOPORT: |
| case KDP_READMSR64: { |
| const uint32_t error = packet.GetU32(&offset); |
| const uint32_t count = packet.GetByteSize() - offset; |
| s.Printf(" (error = 0x%8.8x io:\n", error); |
| if (count > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within "packet" |
| eFormatHex, // Format to use |
| 1, // Size of each item in bytes |
| count, // Number of items |
| 16, // Number per line |
| LLDB_INVALID_ADDRESS, // Don't show addresses |
| // before each line |
| 0, 0); // No bitfields |
| } break; |
| case KDP_DUMPINFO: { |
| const uint32_t count = packet.GetByteSize() - offset; |
| s.Printf(" (count = %u, bytes = \n", count); |
| if (count > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within "packet" |
| eFormatHex, // Format to use |
| 1, // Size of each item in |
| // bytes |
| count, // Number of items |
| 16, // Number per line |
| LLDB_INVALID_ADDRESS, // Don't show addresses |
| // before each line |
| 0, 0); // No bitfields |
| |
| } break; |
| |
| default: |
| s.Printf(" (add support for dumping this packet reply!!!"); |
| break; |
| } |
| } else { |
| // Dump request packets |
| switch (command) { |
| case KDP_CONNECT: { |
| const uint16_t reply_port = ntohs(packet.GetU16(&offset)); |
| const uint16_t exc_port = ntohs(packet.GetU16(&offset)); |
| s.Printf(" (reply_port = %u, exc_port = %u, greeting = \"%s\")", |
| reply_port, exc_port, packet.GetCStr(&offset)); |
| } break; |
| |
| case KDP_DISCONNECT: |
| case KDP_HOSTREBOOT: |
| case KDP_HOSTINFO: |
| case KDP_VERSION: |
| case KDP_REGIONS: |
| case KDP_KERNELVERSION: |
| case KDP_MAXBYTES: |
| case KDP_IMAGEPATH: |
| case KDP_SUSPEND: |
| // No args, just the header in the request... |
| s.PutCString(" ()"); |
| break; |
| |
| case KDP_RESUMECPUS: { |
| const uint32_t cpu_mask = packet.GetU32(&offset); |
| s.Printf(" (cpu_mask = 0x%8.8x)", cpu_mask); |
| } break; |
| |
| case KDP_READMEM: { |
| const uint32_t addr = packet.GetU32(&offset); |
| const uint32_t size = packet.GetU32(&offset); |
| s.Printf(" (addr = 0x%8.8x, size = %u)", addr, size); |
| m_last_read_memory_addr = addr; |
| } break; |
| |
| case KDP_WRITEMEM: { |
| const uint32_t addr = packet.GetU32(&offset); |
| const uint32_t size = packet.GetU32(&offset); |
| s.Printf(" (addr = 0x%8.8x, size = %u, bytes = \n", addr, size); |
| if (size > 0) |
| DumpHexBytes(&s, packet.GetData(&offset, size), size, 32, addr); |
| } break; |
| |
| case KDP_READMEM64: { |
| const uint64_t addr = packet.GetU64(&offset); |
| const uint32_t size = packet.GetU32(&offset); |
| s.Printf(" (addr = 0x%16.16" PRIx64 ", size = %u)", addr, size); |
| m_last_read_memory_addr = addr; |
| } break; |
| |
| case KDP_READPHYSMEM64: { |
| const uint64_t addr = packet.GetU64(&offset); |
| const uint32_t size = packet.GetU32(&offset); |
| const uint32_t lcpu = packet.GetU16(&offset); |
| s.Printf(" (addr = 0x%16.16llx, size = %u, lcpu = %u)", addr, size, |
| lcpu); |
| m_last_read_memory_addr = addr; |
| } break; |
| |
| case KDP_WRITEMEM64: { |
| const uint64_t addr = packet.GetU64(&offset); |
| const uint32_t size = packet.GetU32(&offset); |
| s.Printf(" (addr = 0x%16.16" PRIx64 ", size = %u, bytes = \n", addr, |
| size); |
| if (size > 0) |
| DumpHexBytes(&s, packet.GetData(&offset, size), size, 32, addr); |
| } break; |
| |
| case KDP_WRITEPHYSMEM64: { |
| const uint64_t addr = packet.GetU64(&offset); |
| const uint32_t size = packet.GetU32(&offset); |
| const uint32_t lcpu = packet.GetU16(&offset); |
| s.Printf(" (addr = 0x%16.16llx, size = %u, lcpu = %u, bytes = \n", |
| addr, size, lcpu); |
| if (size > 0) |
| DumpHexBytes(&s, packet.GetData(&offset, size), size, 32, addr); |
| } break; |
| |
| case KDP_READREGS: { |
| const uint32_t cpu = packet.GetU32(&offset); |
| const uint32_t flavor = packet.GetU32(&offset); |
| s.Printf(" (cpu = %u, flavor = %u)", cpu, flavor); |
| } break; |
| |
| case KDP_WRITEREGS: { |
| const uint32_t cpu = packet.GetU32(&offset); |
| const uint32_t flavor = packet.GetU32(&offset); |
| const uint32_t nbytes = packet.GetByteSize() - offset; |
| s.Printf(" (cpu = %u, flavor = %u, regs = \n", cpu, flavor); |
| if (nbytes > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within |
| // "packet" |
| eFormatHex, // Format to use |
| m_addr_byte_size, // Size of each item in |
| // bytes |
| nbytes / m_addr_byte_size, // Number of items |
| 16 / m_addr_byte_size, // Number per line |
| LLDB_INVALID_ADDRESS, // Don't show addresses |
| // before each line |
| 0, 0); // No bitfields |
| } break; |
| |
| case KDP_BREAKPOINT_SET: |
| case KDP_BREAKPOINT_REMOVE: { |
| const uint32_t addr = packet.GetU32(&offset); |
| s.Printf(" (addr = 0x%8.8x)", addr); |
| } break; |
| |
| case KDP_BREAKPOINT_SET64: |
| case KDP_BREAKPOINT_REMOVE64: { |
| const uint64_t addr = packet.GetU64(&offset); |
| s.Printf(" (addr = 0x%16.16" PRIx64 ")", addr); |
| } break; |
| |
| case KDP_LOAD: { |
| const char *path = packet.GetCStr(&offset); |
| s.Printf(" (path = \"%s\")", path); |
| } break; |
| |
| case KDP_EXCEPTION: { |
| const uint32_t count = packet.GetU32(&offset); |
| |
| for (uint32_t i = 0; i < count; ++i) { |
| const uint32_t cpu = packet.GetU32(&offset); |
| const uint32_t exc = packet.GetU32(&offset); |
| const uint32_t code = packet.GetU32(&offset); |
| const uint32_t subcode = packet.GetU32(&offset); |
| const char *exc_cstr = NULL; |
| switch (exc) { |
| case 1: |
| exc_cstr = "EXC_BAD_ACCESS"; |
| break; |
| case 2: |
| exc_cstr = "EXC_BAD_INSTRUCTION"; |
| break; |
| case 3: |
| exc_cstr = "EXC_ARITHMETIC"; |
| break; |
| case 4: |
| exc_cstr = "EXC_EMULATION"; |
| break; |
| case 5: |
| exc_cstr = "EXC_SOFTWARE"; |
| break; |
| case 6: |
| exc_cstr = "EXC_BREAKPOINT"; |
| break; |
| case 7: |
| exc_cstr = "EXC_SYSCALL"; |
| break; |
| case 8: |
| exc_cstr = "EXC_MACH_SYSCALL"; |
| break; |
| case 9: |
| exc_cstr = "EXC_RPC_ALERT"; |
| break; |
| case 10: |
| exc_cstr = "EXC_CRASH"; |
| break; |
| default: |
| break; |
| } |
| |
| s.Printf("{ cpu = 0x%8.8x, exc = %s (%u), code = %u (0x%8.8x), " |
| "subcode = %u (0x%8.8x)} ", |
| cpu, exc_cstr, exc, code, code, subcode, subcode); |
| } |
| } break; |
| |
| case KDP_TERMINATION: { |
| const uint32_t term_code = packet.GetU32(&offset); |
| const uint32_t exit_code = packet.GetU32(&offset); |
| s.Printf(" (term_code = 0x%8.8x (%u), exit_code = 0x%8.8x (%u))", |
| term_code, term_code, exit_code, exit_code); |
| } break; |
| |
| case KDP_REATTACH: { |
| const uint16_t reply_port = ntohs(packet.GetU16(&offset)); |
| s.Printf(" (reply_port = %u)", reply_port); |
| } break; |
| |
| case KDP_READMSR64: { |
| const uint32_t address = packet.GetU32(&offset); |
| const uint16_t lcpu = packet.GetU16(&offset); |
| s.Printf(" (address=0x%8.8x, lcpu=0x%4.4x)", address, lcpu); |
| } break; |
| |
| case KDP_WRITEMSR64: { |
| const uint32_t address = packet.GetU32(&offset); |
| const uint16_t lcpu = packet.GetU16(&offset); |
| const uint32_t nbytes = packet.GetByteSize() - offset; |
| s.Printf(" (address=0x%8.8x, lcpu=0x%4.4x, nbytes=0x%8.8x)", lcpu, |
| address, nbytes); |
| if (nbytes > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within "packet" |
| eFormatHex, // Format to use |
| 1, // Size of each item in |
| // bytes |
| nbytes, // Number of items |
| 16, // Number per line |
| LLDB_INVALID_ADDRESS, // Don't show addresses |
| // before each line |
| 0, 0); // No bitfields |
| } break; |
| |
| case KDP_READIOPORT: { |
| const uint16_t lcpu = packet.GetU16(&offset); |
| const uint16_t address = packet.GetU16(&offset); |
| const uint16_t nbytes = packet.GetU16(&offset); |
| s.Printf(" (lcpu=0x%4.4x, address=0x%4.4x, nbytes=%u)", lcpu, address, |
| nbytes); |
| } break; |
| |
| case KDP_WRITEIOPORT: { |
| const uint16_t lcpu = packet.GetU16(&offset); |
| const uint16_t address = packet.GetU16(&offset); |
| const uint16_t nbytes = packet.GetU16(&offset); |
| s.Printf(" (lcpu = %u, addr = 0x%4.4x, nbytes = %u, bytes = \n", lcpu, |
| address, nbytes); |
| if (nbytes > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within "packet" |
| eFormatHex, // Format to use |
| 1, // Size of each item in |
| // bytes |
| nbytes, // Number of items |
| 16, // Number per line |
| LLDB_INVALID_ADDRESS, // Don't show addresses |
| // before each line |
| 0, 0); // No bitfields |
| } break; |
| |
| case KDP_DUMPINFO: { |
| const uint32_t count = packet.GetByteSize() - offset; |
| s.Printf(" (count = %u, bytes = \n", count); |
| if (count > 0) |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| offset, // Offset within "packet" |
| eFormatHex, // Format to use |
| 1, // Size of each item in bytes |
| count, // Number of items |
| 16, // Number per line |
| LLDB_INVALID_ADDRESS, // Don't show addresses before each line |
| 0, 0); // No bitfields |
| |
| } break; |
| } |
| } |
| } else { |
| error_desc = "error: invalid packet command: "; |
| } |
| } |
| |
| if (error_desc) { |
| s.PutCString(error_desc); |
| |
| DumpDataExtractor(packet, |
| &s, // Stream to dump to |
| 0, // Offset into "packet" |
| eFormatBytes, // Dump as hex bytes |
| 1, // Size of each item is 1 for |
| // single bytes |
| packet.GetByteSize(), // Number of bytes |
| UINT32_MAX, // Num bytes per line |
| LLDB_INVALID_ADDRESS, // Base address |
| 0, 0); // Bitfield info set to not do |
| // anything bitfield related |
| } |
| } |
| |
| uint32_t CommunicationKDP::SendRequestReadRegisters(uint32_t cpu, |
| uint32_t flavor, void *dst, |
| uint32_t dst_len, |
| Status &error) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_READREGS; |
| // Size is header + 4 byte cpu and 4 byte flavor |
| const uint32_t command_length = 8 + 4 + 4; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| request_packet.PutHex32(cpu); |
| request_packet.PutHex32(flavor); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| uint32_t kdp_error = reply_packet.GetU32(&offset); |
| uint32_t src_len = reply_packet.GetByteSize() - 12; |
| |
| if (src_len > 0) { |
| const uint32_t bytes_to_copy = std::min<uint32_t>(src_len, dst_len); |
| const void *src = reply_packet.GetData(&offset, bytes_to_copy); |
| if (src) { |
| ::memcpy(dst, src, bytes_to_copy); |
| error.Clear(); |
| // Return the number of bytes we could have returned regardless if we |
| // copied them or not, just so we know when things don't match up |
| return src_len; |
| } |
| } |
| if (kdp_error) |
| error.SetErrorStringWithFormat( |
| "failed to read kdp registers for cpu %u flavor %u (error %u)", cpu, |
| flavor, kdp_error); |
| else |
| error.SetErrorStringWithFormat( |
| "failed to read kdp registers for cpu %u flavor %u", cpu, flavor); |
| } else { |
| error.SetErrorString("failed to send packet"); |
| } |
| return 0; |
| } |
| |
| uint32_t CommunicationKDP::SendRequestWriteRegisters(uint32_t cpu, |
| uint32_t flavor, |
| const void *src, |
| uint32_t src_len, |
| Status &error) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_WRITEREGS; |
| // Size is header + 4 byte cpu and 4 byte flavor |
| const uint32_t command_length = 8 + 4 + 4 + src_len; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| request_packet.PutHex32(cpu); |
| request_packet.PutHex32(flavor); |
| request_packet.Write(src, src_len); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| uint32_t kdp_error = reply_packet.GetU32(&offset); |
| if (kdp_error == 0) |
| return src_len; |
| error.SetErrorStringWithFormat( |
| "failed to read kdp registers for cpu %u flavor %u (error %u)", cpu, |
| flavor, kdp_error); |
| } else { |
| error.SetErrorString("failed to send packet"); |
| } |
| return 0; |
| } |
| |
| bool CommunicationKDP::SendRequestResume() { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_RESUMECPUS; |
| const uint32_t command_length = 12; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| request_packet.PutHex32(GetCPUMask()); |
| |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) |
| return true; |
| return false; |
| } |
| |
| bool CommunicationKDP::SendRequestBreakpoint(bool set, addr_t addr) { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| bool use_64 = (GetVersion() >= 11); |
| uint32_t command_addr_byte_size = use_64 ? 8 : 4; |
| const CommandType command = |
| set ? (use_64 ? KDP_BREAKPOINT_SET64 : KDP_BREAKPOINT_SET) |
| : (use_64 ? KDP_BREAKPOINT_REMOVE64 : KDP_BREAKPOINT_REMOVE); |
| |
| const uint32_t command_length = 8 + command_addr_byte_size; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| request_packet.PutMaxHex64(addr, command_addr_byte_size); |
| |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) { |
| lldb::offset_t offset = 8; |
| uint32_t kdp_error = reply_packet.GetU32(&offset); |
| if (kdp_error == 0) |
| return true; |
| } |
| return false; |
| } |
| |
| bool CommunicationKDP::SendRequestSuspend() { |
| PacketStreamType request_packet(Stream::eBinary, m_addr_byte_size, |
| m_byte_order); |
| const CommandType command = KDP_SUSPEND; |
| const uint32_t command_length = 8; |
| MakeRequestPacketHeader(command, request_packet, command_length); |
| DataExtractor reply_packet; |
| if (SendRequestAndGetReply(command, request_packet, reply_packet)) |
| return true; |
| return false; |
| } |
