6f35f5cf5d
Renamed the "dispatchqaddr" setting that was coming back for stop reply packets to be named "qaddr" so that gdb doesn't thing it is a register number. gdb was checking the first character and assuming "di" was a hex register number because 'd' is a hex digit. It has been shortened so gdb can safely ignore it. llvm-svn: 113475
311 lines
12 KiB
C++
311 lines
12 KiB
C++
//===-- RNBRemote.h ---------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Created by Greg Clayton on 12/12/07.
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//
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//===----------------------------------------------------------------------===//
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#ifndef __RNBRemote_h__
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#define __RNBRemote_h__
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#include "RNBDefs.h"
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#include "DNB.h"
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#include "RNBContext.h"
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#include "RNBSocket.h"
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#include "PThreadMutex.h"
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#include <string>
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#include <vector>
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#include <deque>
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#include <map>
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class RNBSocket;
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class RNBContext;
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class PThreadEvents;
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enum event_loop_mode { debug_nub, gdb_remote_protocol, done };
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class RNBRemote
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{
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public:
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typedef enum {
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invalid_packet = 0,
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ack, // '+'
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nack, // '-'
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halt, // ^C (async halt)
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use_extended_mode, // '!'
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why_halted, // '?'
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set_argv, // 'A'
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set_bp, // 'B'
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cont, // 'c'
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continue_with_sig, // 'C'
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detach, // 'D'
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read_general_regs, // 'g'
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write_general_regs, // 'G'
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set_thread, // 'H'
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step_inferior_one_cycle, // 'i'
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signal_and_step_inf_one_cycle, // 'I'
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kill, // 'k'
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read_memory, // 'm'
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write_memory, // 'M'
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read_register, // 'p'
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write_register, // 'P'
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restart, // 'R'
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single_step, // 's'
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single_step_with_sig, // 'S'
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search_mem_backwards, // 't'
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thread_alive_p, // 'T'
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vattach, // 'vAttach'
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vattachwait, // 'vAttachWait'
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vcont, // 'vCont'
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vcont_list_actions, // 'vCont?'
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write_data_to_memory, // 'X'
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insert_mem_bp, // 'Z0'
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remove_mem_bp, // 'z0'
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insert_hardware_bp, // 'Z1'
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remove_hardware_bp, // 'z1'
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insert_write_watch_bp, // 'Z2'
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remove_write_watch_bp, // 'z2'
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insert_read_watch_bp, // 'Z3'
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remove_read_watch_bp, // 'z3'
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insert_access_watch_bp, // 'Z4'
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remove_access_watch_bp, // 'z4'
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query_current_thread_id, // 'qC'
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query_memory_crc, // 'qCRC:'
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query_thread_ids_first, // 'qfThreadInfo'
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query_thread_ids_subsequent, // 'qsThreadInfo'
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query_thread_extra_info, // 'qThreadExtraInfo'
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query_thread_stop_info, // 'qThreadStopInfo'
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query_image_offsets, // 'qOffsets'
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query_symbol_lookup, // 'gSymbols'
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query_launch_success, // 'qLaunchSuccess'
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query_register_info, // 'qRegisterInfo'
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query_shlib_notify_info_addr, // 'qShlibInfoAddr'
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query_step_packet_supported, // 'qStepPacketSupported'
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query_host_info, // 'qHostInfo'
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pass_signals_to_inferior, // 'QPassSignals'
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start_noack_mode, // 'QStartNoAckMode'
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set_logging_mode, // 'QSetLogging:'
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set_max_packet_size, // 'QSetMaxPacketSize:'
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set_max_payload_size, // 'QSetMaxPayloadSize:'
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set_environment_variable, // 'QEnvironment:'
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set_disable_aslr, // 'QSetDisableASLR:'
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allocate_memory, // '_M'
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deallocate_memory, // '_m'
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unknown_type,
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} PacketEnum;
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typedef rnb_err_t (RNBRemote::*HandlePacketCallback)(const char *p);
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RNBRemote(bool use_native_regs);
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~RNBRemote();
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static void InitializeRegisters (int use_native);
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rnb_err_t HandleAsyncPacket(PacketEnum *type = NULL);
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rnb_err_t HandleReceivedPacket(PacketEnum *type = NULL);
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nub_thread_t GetContinueThread () const
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{
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return m_continue_thread;
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}
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void SetContinueThread (nub_thread_t tid)
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{
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m_continue_thread = tid;
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}
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nub_thread_t GetCurrentThread () const
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{
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if (m_thread == 0 || m_thread == -1)
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return DNBProcessGetCurrentThread (m_ctx.ProcessID());
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return m_thread;
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}
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void SetCurrentThread (nub_thread_t tid)
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{
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DNBProcessSetCurrentThread (m_ctx.ProcessID(), tid);
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m_thread = tid;
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}
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static void* ThreadFunctionReadRemoteData(void *arg);
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void StartReadRemoteDataThread ();
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void StopReadRemoteDataThread ();
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void NotifyThatProcessStopped (void);
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rnb_err_t HandlePacket_A (const char *p);
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rnb_err_t HandlePacket_H (const char *p);
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rnb_err_t HandlePacket_qC (const char *p);
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rnb_err_t HandlePacket_qLaunchSuccess (const char *p);
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rnb_err_t HandlePacket_qRegisterInfo (const char *p);
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rnb_err_t HandlePacket_qShlibInfoAddr (const char *p);
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rnb_err_t HandlePacket_qStepPacketSupported (const char *p);
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rnb_err_t HandlePacket_qThreadInfo (const char *p);
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rnb_err_t HandlePacket_qThreadExtraInfo (const char *p);
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rnb_err_t HandlePacket_qThreadStopInfo (const char *p);
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rnb_err_t HandlePacket_qHostInfo (const char *p);
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rnb_err_t HandlePacket_Q (const char *p);
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rnb_err_t HandlePacket_last_signal (const char *p);
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rnb_err_t HandlePacket_m (const char *p);
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rnb_err_t HandlePacket_M (const char *p);
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rnb_err_t HandlePacket_X (const char *p);
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rnb_err_t HandlePacket_g (const char *p);
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rnb_err_t HandlePacket_G (const char *p);
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rnb_err_t HandlePacket_z (const char *p);
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rnb_err_t HandlePacket_T (const char *p);
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rnb_err_t HandlePacket_p (const char *p);
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rnb_err_t HandlePacket_P (const char *p);
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rnb_err_t HandlePacket_c (const char *p);
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rnb_err_t HandlePacket_C (const char *p);
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rnb_err_t HandlePacket_D (const char *p);
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rnb_err_t HandlePacket_k (const char *p);
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rnb_err_t HandlePacket_s (const char *p);
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rnb_err_t HandlePacket_S (const char *p);
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rnb_err_t HandlePacket_v (const char *p);
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rnb_err_t HandlePacket_UNIMPLEMENTED (const char *p);
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rnb_err_t HandlePacket_ILLFORMED (const char *description);
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rnb_err_t HandlePacket_AllocateMemory (const char *p);
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rnb_err_t HandlePacket_DeallocateMemory (const char *p);
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rnb_err_t HandlePacket_stop_process (const char *p);
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rnb_err_t SendStopReplyPacketForThread (nub_thread_t tid);
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rnb_err_t SendHexEncodedBytePacket (const char *header, const void *buf, size_t buf_len, const char *footer);
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rnb_err_t SendSTDOUTPacket (char *buf, nub_size_t buf_size);
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rnb_err_t SendSTDERRPacket (char *buf, nub_size_t buf_size);
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void FlushSTDIO ();
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RNBContext& Context() { return m_ctx; }
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RNBSocket& Comm() { return m_comm; }
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private:
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// Outlaw some contructors
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RNBRemote (const RNBRemote &);
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protected:
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static void
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InitializeNativeRegisters ();
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rnb_err_t GetCommData ();
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void CommDataReceived(const std::string& data);
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struct Packet
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{
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typedef std::vector<Packet> collection;
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typedef collection::iterator iterator;
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typedef collection::const_iterator const_iterator;
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PacketEnum type;
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HandlePacketCallback normal; // Function to call when inferior is halted
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HandlePacketCallback async; // Function to call when inferior is running
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std::string abbrev;
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std::string printable_name;
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Packet() :
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type(invalid_packet),
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normal (NULL),
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async (NULL),
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abbrev (),
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printable_name ()
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{
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}
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Packet( PacketEnum in_type,
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HandlePacketCallback in_normal,
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HandlePacketCallback in_async,
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const char *in_abbrev,
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const char *in_printable_name) :
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type (in_type),
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normal (in_normal),
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async (in_async),
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abbrev (in_abbrev),
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printable_name (in_printable_name)
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{
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}
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};
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rnb_err_t GetPacket (std::string &packet_data, RNBRemote::Packet& packet_info, bool wait);
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rnb_err_t SendPacket (const std::string &);
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void CreatePacketTable ();
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rnb_err_t GetPacketPayload (std::string &);
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// gdb can send multiple Z/z packets for the same address and
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// these calls must be ref counted.
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typedef struct Breakpoint
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{
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Breakpoint(nub_break_t breakID) :
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m_breakID(breakID),
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m_refCount(1)
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{
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}
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Breakpoint() :
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m_breakID(INVALID_NUB_BREAK_ID),
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m_refCount(0)
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{
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}
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Breakpoint(const Breakpoint& rhs) :
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m_breakID(rhs.m_breakID),
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m_refCount(rhs.m_refCount)
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{
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}
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nub_break_t BreakID() const { return m_breakID; }
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uint32_t RefCount() const { return m_refCount; }
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void Release() { if (m_refCount > 0) --m_refCount; }
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void Retain() { ++m_refCount; }
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nub_break_t m_breakID;
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uint32_t m_refCount;
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};
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typedef std::map<nub_addr_t, Breakpoint> BreakpointMap;
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typedef BreakpointMap::iterator BreakpointMapIter;
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typedef BreakpointMap::const_iterator BreakpointMapConstIter;
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RNBContext m_ctx; // process context
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RNBSocket m_comm; // communication port
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bool m_extended_mode; // are we in extended mode?
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bool m_noack_mode; // are we in no-ack mode?
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nub_thread_t m_continue_thread; // thread to continue; 0 for any, -1 for all
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nub_thread_t m_thread; // thread for other ops; 0 for any, -1 for all
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PThreadMutex m_mutex; // Mutex that protects
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uint32_t m_packets_recvd;
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Packet::collection m_packets;
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std::deque<std::string> m_rx_packets;
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std::string m_rx_partial_data; // For packets that may come in more than one batch, anything left over can be left here
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pthread_t m_rx_pthread;
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BreakpointMap m_breakpoints;
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BreakpointMap m_watchpoints;
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uint32_t m_max_payload_size; // the maximum sized payload we should send to gdb
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bool m_use_native_regs;
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};
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/* We translate the /usr/include/mach/exception_types.h exception types
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(e.g. EXC_BAD_ACCESS) to the fake BSD signal numbers that gdb uses
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in include/gdb/signals.h (e.g. TARGET_EXC_BAD_ACCESS). These hard
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coded values for TARGET_EXC_BAD_ACCESS et al must match the gdb
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values in its include/gdb/signals.h. */
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#define TARGET_EXC_BAD_ACCESS 0x91
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#define TARGET_EXC_BAD_INSTRUCTION 0x92
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#define TARGET_EXC_ARITHMETIC 0x93
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#define TARGET_EXC_EMULATION 0x94
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#define TARGET_EXC_SOFTWARE 0x95
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#define TARGET_EXC_BREAKPOINT 0x96
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/* Generally speaking, you can't assume gdb can receive more than 399 bytes
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at a time with a random gdb. This bufsize constant is only specifying
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how many bytes gdb can *receive* from debugserver -- it tells us nothing
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about how many bytes gdb might try to send in a single packet. */
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#define DEFAULT_GDB_REMOTE_PROTOCOL_BUFSIZE 399
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#endif // #ifndef __RNBRemote_h__
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