diff options
Diffstat (limited to 'lldb/source/Plugins/Process')
3 files changed, 71 insertions, 33 deletions
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp index bf72673f176..27dcd884521 100644 --- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp +++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp @@ -415,7 +415,8 @@ static void AppendHexValue(StreamString &response, const uint8_t *buf, static void WriteRegisterValueInHexFixedWidth( StreamString &response, NativeRegisterContextSP ®_ctx_sp, - const RegisterInfo ®_info, const RegisterValue *reg_value_p) { + const RegisterInfo ®_info, const RegisterValue *reg_value_p, + lldb::ByteOrder byte_order) { RegisterValue reg_value; if (!reg_value_p) { Error error = reg_ctx_sp->ReadRegister(®_info, reg_value); @@ -426,7 +427,8 @@ static void WriteRegisterValueInHexFixedWidth( if (reg_value_p) { AppendHexValue(response, (const uint8_t *)reg_value_p->GetBytes(), - reg_value_p->GetByteSize(), false); + reg_value_p->GetByteSize(), + byte_order == lldb::eByteOrderLittle); } else { // Zero-out any unreadable values. if (reg_info.byte_size > 0) { @@ -436,8 +438,7 @@ static void WriteRegisterValueInHexFixedWidth( } } -static JSONObject::SP GetRegistersAsJSON(NativeThreadProtocol &thread, - bool abridged) { +static JSONObject::SP GetRegistersAsJSON(NativeThreadProtocol &thread) { Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD)); NativeRegisterContextSP reg_ctx_sp = thread.GetRegisterContext(); @@ -462,11 +463,8 @@ static JSONObject::SP GetRegistersAsJSON(NativeThreadProtocol &thread, static const uint32_t k_expedited_registers[] = { LLDB_REGNUM_GENERIC_PC, LLDB_REGNUM_GENERIC_SP, LLDB_REGNUM_GENERIC_FP, LLDB_REGNUM_GENERIC_RA, LLDB_INVALID_REGNUM}; - static const uint32_t k_abridged_expedited_registers[] = { - LLDB_REGNUM_GENERIC_PC, LLDB_INVALID_REGNUM}; - for (const uint32_t *generic_reg_p = abridged ? k_abridged_expedited_registers - : k_expedited_registers; + for (const uint32_t *generic_reg_p = k_expedited_registers; *generic_reg_p != LLDB_INVALID_REGNUM; ++generic_reg_p) { uint32_t reg_num = reg_ctx_sp->ConvertRegisterKindToRegisterNumber( eRegisterKindGeneric, *generic_reg_p); @@ -501,7 +499,7 @@ static JSONObject::SP GetRegistersAsJSON(NativeThreadProtocol &thread, StreamString stream; WriteRegisterValueInHexFixedWidth(stream, reg_ctx_sp, *reg_info_p, - ®_value); + ®_value, lldb::eByteOrderBig); register_object_sp->SetObject( llvm::to_string(reg_num), @@ -567,8 +565,10 @@ static JSONArray::SP GetJSONThreadsInfo(NativeProcessProtocol &process, JSONObject::SP thread_obj_sp = std::make_shared<JSONObject>(); threads_array_sp->AppendObject(thread_obj_sp); - if (JSONObject::SP registers_sp = GetRegistersAsJSON(*thread_sp, abridged)) - thread_obj_sp->SetObject("registers", registers_sp); + if (!abridged) { + if (JSONObject::SP registers_sp = GetRegistersAsJSON(*thread_sp)) + thread_obj_sp->SetObject("registers", registers_sp); + } thread_obj_sp->SetObject("tid", std::make_shared<JSONNumber>(tid)); if (signum != 0) @@ -721,6 +721,41 @@ GDBRemoteCommunicationServerLLGS::SendStopReplyPacketForThread( "jstopinfo field for pid %" PRIu64, __FUNCTION__, m_debugged_process_sp->GetID()); } + + uint32_t i = 0; + response.PutCString("thread-pcs"); + char delimiter = ':'; + for (NativeThreadProtocolSP thread_sp; + (thread_sp = m_debugged_process_sp->GetThreadAtIndex(i)) != nullptr; + ++i) { + NativeRegisterContextSP reg_ctx_sp = thread_sp->GetRegisterContext(); + if (!reg_ctx_sp) + continue; + + uint32_t reg_to_read = reg_ctx_sp->ConvertRegisterKindToRegisterNumber( + eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); + const RegisterInfo *const reg_info_p = + reg_ctx_sp->GetRegisterInfoAtIndex(reg_to_read); + + RegisterValue reg_value; + Error error = reg_ctx_sp->ReadRegister(reg_info_p, reg_value); + if (error.Fail()) { + if (log) + log->Printf("%s failed to read register '%s' index %" PRIu32 ": %s", + __FUNCTION__, + reg_info_p->name ? reg_info_p->name + : "<unnamed-register>", + reg_to_read, error.AsCString()); + continue; + } + + response.PutChar(delimiter); + delimiter = ','; + WriteRegisterValueInHexFixedWidth(response, reg_ctx_sp, *reg_info_p, + ®_value, endian::InlHostByteOrder()); + } + + response.PutChar(';'); } // @@ -761,7 +796,7 @@ GDBRemoteCommunicationServerLLGS::SendStopReplyPacketForThread( if (error.Success()) { response.Printf("%.02x:", *reg_num_p); WriteRegisterValueInHexFixedWidth(response, reg_ctx_sp, *reg_info_p, - ®_value); + ®_value, lldb::eByteOrderBig); response.PutChar(';'); } else { if (log) diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp index 992a71912cd..397c57f2576 100644 --- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp +++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp @@ -1649,27 +1649,8 @@ bool ProcessGDBRemote::UpdateThreadList(ThreadList &old_thread_list, __FUNCTION__, static_cast<void *>(thread_sp.get()), thread_sp->GetID()); } - // The m_thread_pcs vector has pc values in big-endian order, not - // target-endian, unlike most - // of the register read/write packets in gdb-remote protocol. - // Early in the process startup, we may not yet have set the process - // ByteOrder so we ignore these; - // they are a performance improvement over fetching thread register values - // individually, the - // method we will fall back to if needed. - if (m_thread_ids.size() == m_thread_pcs.size() && thread_sp.get() && - GetByteOrder() != eByteOrderInvalid) { - ThreadGDBRemote *gdb_thread = - static_cast<ThreadGDBRemote *>(thread_sp.get()); - RegisterContextSP reg_ctx_sp(thread_sp->GetRegisterContext()); - if (reg_ctx_sp) { - uint32_t pc_regnum = reg_ctx_sp->ConvertRegisterKindToRegisterNumber( - eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); - if (pc_regnum != LLDB_INVALID_REGNUM) { - gdb_thread->PrivateSetRegisterValue(pc_regnum, m_thread_pcs[i]); - } - } - } + + SetThreadPc(thread_sp, i); new_thread_list.AddThreadSortedByIndexID(thread_sp); } } @@ -1689,6 +1670,22 @@ bool ProcessGDBRemote::UpdateThreadList(ThreadList &old_thread_list, return true; } +void ProcessGDBRemote::SetThreadPc(const ThreadSP &thread_sp, uint64_t index) { + if (m_thread_ids.size() == m_thread_pcs.size() && thread_sp.get() && + GetByteOrder() != eByteOrderInvalid) { + ThreadGDBRemote *gdb_thread = + static_cast<ThreadGDBRemote *>(thread_sp.get()); + RegisterContextSP reg_ctx_sp(thread_sp->GetRegisterContext()); + if (reg_ctx_sp) { + uint32_t pc_regnum = reg_ctx_sp->ConvertRegisterKindToRegisterNumber( + eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); + if (pc_regnum != LLDB_INVALID_REGNUM) { + gdb_thread->PrivateSetRegisterValue(pc_regnum, m_thread_pcs[index]); + } + } + } +} + bool ProcessGDBRemote::GetThreadStopInfoFromJSON( ThreadGDBRemote *thread, const StructuredData::ObjectSP &thread_infos_sp) { // See if we got thread stop infos for all threads via the "jThreadsInfo" @@ -1774,6 +1771,11 @@ ThreadSP ProcessGDBRemote::SetThreadStopInfo( static_cast<ThreadGDBRemote *>(thread_sp.get()); gdb_thread->GetRegisterContext()->InvalidateIfNeeded(true); + auto iter = std::find(m_thread_ids.begin(), m_thread_ids.end(), tid); + if (iter != m_thread_ids.end()) { + SetThreadPc(thread_sp, iter - m_thread_ids.begin()); + } + for (const auto &pair : expedited_register_map) { StringExtractor reg_value_extractor; reg_value_extractor.GetStringRef() = pair.second; diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h index 6423abc5583..1ecd58224c0 100644 --- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h +++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h @@ -417,6 +417,7 @@ private: void HandleStopReply() override; void HandleAsyncStructuredDataPacket(llvm::StringRef data) override; + void SetThreadPc(const lldb::ThreadSP &thread_sp, uint64_t index); using ModuleCacheKey = std::pair<std::string, std::string>; // KeyInfo for the cached module spec DenseMap. // The invariant is that all real keys will have the file and architecture |
