gdbserver/target.h

   1 /* Target operations for the remote server for GDB.
   2    Copyright (C) 2002-2023 Free Software Foundation, Inc.
   3
   4    Contributed by MontaVista Software.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GDBSERVER_TARGET_H
  22 #define GDBSERVER_TARGET_H
  23
  24 #include <sys/types.h>
  25 #include "target/target.h"
  26 #include "target/resume.h"
  27 #include "target/wait.h"
  28 #include "target/waitstatus.h"
  29 #include "mem-break.h"
  30 #include "gdbsupport/array-view.h"
  31 #include "gdbsupport/btrace-common.h"
  32 #include <vector>
  33 #include "gdbsupport/byte-vector.h"
  34
  35 struct emit_ops;
  36 struct process_info;
  37
  38 /* This structure describes how to resume a particular thread (or all
  39    threads) based on the client's request.  If thread is -1, then this
  40    entry applies to all threads.  These are passed around as an
  41    array.  */
  42
  43 struct thread_resume
  44 {
  45   ptid_t thread;
  46
  47   /* How to "resume".  */
  48   enum resume_kind kind;
  49
  50   /* If non-zero, send this signal when we resume, or to stop the
  51      thread.  If stopping a thread, and this is 0, the target should
  52      stop the thread however it best decides to (e.g., SIGSTOP on
  53      linux; SuspendThread on win32).  This is a host signal value (not
  54      enum gdb_signal).  */
  55   int sig;
  56
  57   /* Range to single step within.  Valid only iff KIND is resume_step.
  58
  59      Single-step once, and then continuing stepping as long as the
  60      thread stops in this range.  (If the range is empty
  61      [STEP_RANGE_START == STEP_RANGE_END], then this is a single-step
  62      request.)  */
  63   CORE_ADDR step_range_start;   /* Inclusive */
  64   CORE_ADDR step_range_end;     /* Exclusive */
  65 };
  66
  67 /* GDBserver doesn't have a concept of strata like GDB, but we call
  68    its target vector "process_stratum" anyway for the benefit of
  69    shared code.  */
  70
  71 class process_stratum_target
  72 {
  73 public:
  74
  75   virtual ~process_stratum_target () = default;
  76
  77   /* Start a new process.
  78
  79      PROGRAM is a path to the program to execute.
  80      PROGRAM_ARGS is a standard NULL-terminated array of arguments,
  81      to be passed to the inferior as ``argv'' (along with PROGRAM).
  82
  83      Returns the new PID on success, -1 on failure.  Registers the new
  84      process with the process list.  */
  85   virtual int create_inferior (const char *program,
  86                                const std::vector<char *> &program_args) = 0;
  87
  88   /* Do additional setup after a new process is created, including
  89      exec-wrapper completion.  */
  90   virtual void post_create_inferior ();
  91
  92   /* Attach to a running process.
  93
  94      PID is the process ID to attach to, specified by the user
  95      or a higher layer.
  96
  97      Returns -1 if attaching is unsupported, 0 on success, and calls
  98      error() otherwise.  */
  99   virtual int attach (unsigned long pid) = 0;
 100
 101   /* Kill process PROC.  Return -1 on failure, and 0 on success.  */
 102   virtual int kill (process_info *proc) = 0;
 103
 104   /* Detach from process PROC.  Return -1 on failure, and 0 on
 105      success.  */
 106   virtual int detach (process_info *proc) = 0;
 107
 108   /* The inferior process has died.  Do what is right.  */
 109   virtual void mourn (process_info *proc) = 0;
 110
 111   /* Wait for process PID to exit.  */
 112   virtual void join (int pid) = 0;
 113
 114   /* Return true iff the thread with process ID PID is alive.  */
 115   virtual bool thread_alive (ptid_t pid) = 0;
 116
 117   /* Resume the inferior process.  */
 118   virtual void resume (thread_resume *resume_info, size_t n) = 0;
 119
 120   /* Wait for the inferior process or thread to change state.  Store
 121      status through argument pointer STATUS.
 122
 123      PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
 124      wait for any thread of process pid to do something.  Return ptid
 125      of child, or -1 in case of error; store status through argument
 126      pointer STATUS.  OPTIONS is a bit set of options defined as
 127      TARGET_W* above.  If options contains TARGET_WNOHANG and there's
 128      no child stop to report, return is
 129      null_ptid/TARGET_WAITKIND_IGNORE.  */
 130   virtual ptid_t wait (ptid_t ptid, target_waitstatus *status,
 131                        target_wait_flags options) = 0;
 132
 133   /* Fetch registers from the inferior process.
 134
 135      If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO.  */
 136   virtual void fetch_registers (regcache *regcache, int regno) = 0;
 137
 138   /* Store registers to the inferior process.
 139
 140      If REGNO is -1, store all registers; otherwise, store at least REGNO.  */
 141   virtual void store_registers (regcache *regcache, int regno) = 0;
 142
 143   /* Read memory from the inferior process.  This should generally be
 144      called through read_inferior_memory, which handles breakpoint shadowing.
 145
 146      Read LEN bytes at MEMADDR into a buffer at MYADDR.
 147
 148      Returns 0 on success and errno on failure.  */
 149   virtual int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
 150                            int len) = 0;
 151
 152   /* Write memory to the inferior process.  This should generally be
 153      called through target_write_memory, which handles breakpoint shadowing.
 154
 155      Write LEN bytes from the buffer at MYADDR to MEMADDR.
 156
 157      Returns 0 on success and errno on failure.  */
 158   virtual int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
 159                             int len) = 0;
 160
 161   /* Query GDB for the values of any symbols we're interested in.
 162      This function is called whenever we receive a "qSymbols::"
 163      query, which corresponds to every time more symbols (might)
 164      become available.  */
 165   virtual void look_up_symbols ();
 166
 167   /* Send an interrupt request to the inferior process,
 168      however is appropriate.  */
 169   virtual void request_interrupt () = 0;
 170
 171   /* Return true if the read_auxv target op is supported.  */
 172   virtual bool supports_read_auxv ();
 173
 174   /* Read auxiliary vector data from the process with pid PID.
 175
 176      Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 177   virtual int read_auxv (int pid, CORE_ADDR offset, unsigned char *myaddr,
 178                          unsigned int len);
 179
 180   /* Returns true if GDB Z breakpoint type TYPE is supported, false
 181      otherwise.  The type is coded as follows:
 182        '0' - software-breakpoint
 183        '1' - hardware-breakpoint
 184        '2' - write watchpoint
 185        '3' - read watchpoint
 186        '4' - access watchpoint
 187   */
 188   virtual bool supports_z_point_type (char z_type);
 189
 190   /* Insert and remove a break or watchpoint.
 191      Returns 0 on success, -1 on failure and 1 on unsupported.  */
 192   virtual int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
 193                             int size, raw_breakpoint *bp);
 194
 195   virtual int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
 196                             int size, raw_breakpoint *bp);
 197
 198   /* Returns true if the target stopped because it executed a software
 199      breakpoint instruction, false otherwise.  */
 200   virtual bool stopped_by_sw_breakpoint ();
 201
 202   /* Returns true if the target knows whether a trap was caused by a
 203      SW breakpoint triggering.  */
 204   virtual bool supports_stopped_by_sw_breakpoint ();
 205
 206   /* Returns true if the target stopped for a hardware breakpoint.  */
 207   virtual bool stopped_by_hw_breakpoint ();
 208
 209   /* Returns true if the target knows whether a trap was caused by a
 210      HW breakpoint triggering.  */
 211   virtual bool supports_stopped_by_hw_breakpoint ();
 212
 213   /* Returns true if the target can do hardware single step.  */
 214   virtual bool supports_hardware_single_step ();
 215
 216   /* Returns true if target was stopped due to a watchpoint hit, false
 217      otherwise.  */
 218   virtual bool stopped_by_watchpoint ();
 219
 220   /* Returns the address associated with the watchpoint that hit, if any;
 221      returns 0 otherwise.  */
 222   virtual CORE_ADDR stopped_data_address ();
 223
 224   /* Return true if the read_offsets target op is supported.  */
 225   virtual bool supports_read_offsets ();
 226
 227   /* Reports the text, data offsets of the executable.  This is
 228      needed for uclinux where the executable is relocated during load
 229      time.  */
 230   virtual int read_offsets (CORE_ADDR *text, CORE_ADDR *data);
 231
 232   /* Return true if the get_tls_address target op is supported.  */
 233   virtual bool supports_get_tls_address ();
 234
 235   /* Fetch the address associated with a specific thread local storage
 236      area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
 237      Stores it in *ADDRESS and returns zero on success; otherwise returns
 238      an error code.  A return value of -1 means this system does not
 239      support the operation.  */
 240   virtual int get_tls_address (thread_info *thread, CORE_ADDR offset,
 241                                CORE_ADDR load_module, CORE_ADDR *address);
 242
 243   /* Return true if the qxfer_osdata target op is supported.  */
 244   virtual bool supports_qxfer_osdata ();
 245
 246   /* Read/Write OS data using qXfer packets.  */
 247   virtual int qxfer_osdata (const char *annex, unsigned char *readbuf,
 248                             unsigned const char *writebuf,
 249                             CORE_ADDR offset, int len);
 250
 251   /* Return true if the qxfer_siginfo target op is supported.  */
 252   virtual bool supports_qxfer_siginfo ();
 253
 254   /* Read/Write extra signal info.  */
 255   virtual int qxfer_siginfo (const char *annex, unsigned char *readbuf,
 256                              unsigned const char *writebuf,
 257                              CORE_ADDR offset, int len);
 258
 259   /* Return true if non-stop mode is supported.  */
 260   virtual bool supports_non_stop ();
 261
 262   /* Enables async target events.  Returns the previous enable
 263      state.  */
 264   virtual bool async (bool enable);
 265
 266   /* Switch to non-stop (ENABLE == true) or all-stop (ENABLE == false)
 267      mode.  Return 0 on success, -1 otherwise.  */
 268   virtual int start_non_stop (bool enable);
 269
 270   /* Returns true if the target supports multi-process debugging.  */
 271   virtual bool supports_multi_process ();
 272
 273   /* Returns true if fork events are supported.  */
 274   virtual bool supports_fork_events ();
 275
 276   /* Returns true if vfork events are supported.  */
 277   virtual bool supports_vfork_events ();
 278
 279   /* Returns true if exec events are supported.  */
 280   virtual bool supports_exec_events ();
 281
 282   /* Allows target to re-initialize connection-specific settings.  */
 283   virtual void handle_new_gdb_connection ();
 284
 285   /* The target-specific routine to process monitor command.
 286      Returns 1 if handled, or 0 to perform default processing.  */
 287   virtual int handle_monitor_command (char *mon);
 288
 289   /* Returns the core given a thread, or -1 if not known.  */
 290   virtual int core_of_thread (ptid_t ptid);
 291
 292   /* Returns true if the read_loadmap target op is supported.  */
 293   virtual bool supports_read_loadmap ();
 294
 295   /* Read loadmaps.  Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 296   virtual int read_loadmap (const char *annex, CORE_ADDR offset,
 297                             unsigned char *myaddr, unsigned int len);
 298
 299   /* Target specific qSupported support.  FEATURES is an array of
 300      features unsupported by the core of GDBserver.  */
 301   virtual void process_qsupported
 302     (gdb::array_view<const char * const> features);
 303
 304   /* Return true if the target supports tracepoints, false otherwise.  */
 305   virtual bool supports_tracepoints ();
 306
 307   /* Read PC from REGCACHE.  */
 308   virtual CORE_ADDR read_pc (regcache *regcache);
 309
 310   /* Write PC to REGCACHE.  */
 311   virtual void write_pc (regcache *regcache, CORE_ADDR pc);
 312
 313   /* Return true if the thread_stopped op is supported.  */
 314   virtual bool supports_thread_stopped ();
 315
 316   /* Return true if THREAD is known to be stopped now.  */
 317   virtual bool thread_stopped (thread_info *thread);
 318
 319   /* Return true if the get_tib_address op is supported.  */
 320   virtual bool supports_get_tib_address ();
 321
 322   /* Read Thread Information Block address.  */
 323   virtual int get_tib_address (ptid_t ptid, CORE_ADDR *address);
 324
 325   /* Pause all threads.  If FREEZE, arrange for any resume attempt to
 326      be ignored until an unpause_all call unfreezes threads again.
 327      There can be nested calls to pause_all, so a freeze counter
 328      should be maintained.  */
 329   virtual void pause_all (bool freeze);
 330
 331   /* Unpause all threads.  Threads that hadn't been resumed by the
 332      client should be left stopped.  Basically a pause/unpause call
 333      pair should not end up resuming threads that were stopped before
 334      the pause call.  */
 335   virtual void unpause_all (bool unfreeze);
 336
 337   /* Stabilize all threads.  That is, force them out of jump pads.  */
 338   virtual void stabilize_threads ();
 339
 340   /* Return true if the install_fast_tracepoint_jump_pad op is
 341      supported.  */
 342   virtual bool supports_fast_tracepoints ();
 343
 344   /* Install a fast tracepoint jump pad.  TPOINT is the address of the
 345      tracepoint internal object as used by the IPA agent.  TPADDR is
 346      the address of tracepoint.  COLLECTOR is address of the function
 347      the jump pad redirects to.  LOCKADDR is the address of the jump
 348      pad lock object.  ORIG_SIZE is the size in bytes of the
 349      instruction at TPADDR.  JUMP_ENTRY points to the address of the
 350      jump pad entry, and on return holds the address past the end of
 351      the created jump pad.  If a trampoline is created by the function,
 352      then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
 353      the trampoline, else they remain unchanged.  JJUMP_PAD_INSN is a
 354      buffer containing a copy of the instruction at TPADDR.
 355      ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
 356      return the address range where the instruction at TPADDR was relocated
 357      to.  If an error occurs, the ERR may be used to pass on an error
 358      message.  */
 359   virtual int install_fast_tracepoint_jump_pad
 360     (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
 361      CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
 362      CORE_ADDR *trampoline, ULONGEST *trampoline_size,
 363      unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
 364      CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
 365      char *err);
 366
 367   /* Return the minimum length of an instruction that can be safely
 368      overwritten for use as a fast tracepoint.  */
 369   virtual int get_min_fast_tracepoint_insn_len ();
 370
 371   /* Return the bytecode operations vector for the current inferior.
 372      Returns nullptr if bytecode compilation is not supported.  */
 373   virtual struct emit_ops *emit_ops ();
 374
 375   /* Returns true if the target supports disabling randomization.  */
 376   virtual bool supports_disable_randomization ();
 377
 378   /* Return true if the qxfer_libraries_svr4 op is supported.  */
 379   virtual bool supports_qxfer_libraries_svr4 ();
 380
 381   /* Read solib info on SVR4 platforms.  */
 382   virtual int qxfer_libraries_svr4 (const char *annex,
 383                                     unsigned char *readbuf,
 384                                     unsigned const char *writebuf,
 385                                     CORE_ADDR offset, int len);
 386
 387   /* Return true if target supports debugging agent.  */
 388   virtual bool supports_agent ();
 389
 390   /* Return true if target supports btrace.  */
 391   virtual bool supports_btrace ();
 392
 393   /* Enable branch tracing for TP based on CONF and allocate a branch trace
 394      target information struct for reading and for disabling branch trace.  */
 395   virtual btrace_target_info *enable_btrace (thread_info *tp,
 396                                              const btrace_config *conf);
 397
 398   /* Disable branch tracing.
 399      Returns zero on success, non-zero otherwise.  */
 400   virtual int disable_btrace (btrace_target_info *tinfo);
 401
 402   /* Read branch trace data into buffer.
 403      Return 0 on success; print an error message into BUFFER and return -1,
 404      otherwise.  */
 405   virtual int read_btrace (btrace_target_info *tinfo, std::string *buf,
 406                            enum btrace_read_type type);
 407
 408   /* Read the branch trace configuration into BUFFER.
 409      Return 0 on success; print an error message into BUFFER and return -1
 410      otherwise.  */
 411   virtual int read_btrace_conf (const btrace_target_info *tinfo,
 412                                 std::string *buf);
 413
 414   /* Return true if target supports range stepping.  */
 415   virtual bool supports_range_stepping ();
 416
 417   /* Return true if the pid_to_exec_file op is supported.  */
 418   virtual bool supports_pid_to_exec_file ();
 419
 420   /* Return the full absolute name of the executable file that was
 421      run to create the process PID.  If the executable file cannot
 422      be determined, NULL is returned.  Otherwise, a pointer to a
 423      character string containing the pathname is returned.  This
 424      string should be copied into a buffer by the client if the string
 425      will not be immediately used, or if it must persist.  */
 426   virtual const char *pid_to_exec_file (int pid);
 427
 428   /* Return true if any of the multifs ops is supported.  */
 429   virtual bool supports_multifs ();
 430
 431   /* Multiple-filesystem-aware open.  Like open(2), but operating in
 432      the filesystem as it appears to process PID.  Systems where all
 433      processes share a common filesystem should not override this.
 434      The default behavior is to use open(2).  */
 435   virtual int multifs_open (int pid, const char *filename,
 436                             int flags, mode_t mode);
 437
 438   /* Multiple-filesystem-aware unlink.  Like unlink(2), but operates
 439      in the filesystem as it appears to process PID.  Systems where
 440      all processes share a common filesystem should not override this.
 441      The default behavior is to use unlink(2).  */
 442   virtual int multifs_unlink (int pid, const char *filename);
 443
 444   /* Multiple-filesystem-aware readlink.  Like readlink(2), but
 445      operating in the filesystem as it appears to process PID.
 446      Systems where all processes share a common filesystem should
 447      not override this.  The default behavior is to use readlink(2).  */
 448   virtual ssize_t multifs_readlink (int pid, const char *filename,
 449                                     char *buf, size_t bufsiz);
 450
 451   /* Return the breakpoint kind for this target based on PC.  The
 452      PCPTR is adjusted to the real memory location in case a flag
 453      (e.g., the Thumb bit on ARM) was present in the PC.  */
 454   virtual int breakpoint_kind_from_pc (CORE_ADDR *pcptr);
 455
 456   /* Return the software breakpoint from KIND.  KIND can have target
 457      specific meaning like the Z0 kind parameter.
 458      SIZE is set to the software breakpoint's length in memory.  */
 459   virtual const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) = 0;
 460
 461   /* Return the breakpoint kind for this target based on the current
 462      processor state (e.g. the current instruction mode on ARM) and the
 463      PC.  The PCPTR is adjusted to the real memory location in case a
 464      flag (e.g., the Thumb bit on ARM) is present in the  PC.  */
 465   virtual int breakpoint_kind_from_current_state (CORE_ADDR *pcptr);
 466
 467   /* Return the thread's name, or NULL if the target is unable to
 468      determine it.  The returned value must not be freed by the
 469      caller.  */
 470   virtual const char *thread_name (ptid_t thread);
 471
 472   /* Thread ID to (numeric) thread handle: Return true on success and
 473      false for failure.  Return pointer to thread handle via HANDLE
 474      and the handle's length via HANDLE_LEN.  */
 475   virtual bool thread_handle (ptid_t ptid, gdb_byte **handle,
 476                               int *handle_len);
 477
 478   /* If THREAD is a fork child that was not reported to GDB, return its parent
 479      else nullptr.  */
 480   virtual thread_info *thread_pending_parent (thread_info *thread);
 481
 482   /* If THREAD is the parent of a fork child that was not reported to GDB,
 483      return this child, else nullptr.  */
 484   virtual thread_info *thread_pending_child (thread_info *thread);
 485
 486   /* Returns true if the target can software single step.  */
 487   virtual bool supports_software_single_step ();
 488
 489   /* Return true if the target supports catch syscall.  */
 490   virtual bool supports_catch_syscall ();
 491
 492   /* Return tdesc index for IPA.  */
 493   virtual int get_ipa_tdesc_idx ();
 494
 495   /* Returns true if the target supports memory tagging facilities.  */
 496   virtual bool supports_memory_tagging ();
 497
 498   /* Return the allocated memory tags of type TYPE associated with
 499      [ADDRESS, ADDRESS + LEN) in TAGS.
 500
 501      Returns true if successful and false otherwise.  */
 502   virtual bool fetch_memtags (CORE_ADDR address, size_t len,
 503                               gdb::byte_vector &tags, int type);
 504
 505   /* Write the allocation tags of type TYPE contained in TAGS to the
 506      memory range [ADDRESS, ADDRESS + LEN).
 507
 508      Returns true if successful and false otherwise.  */
 509   virtual bool store_memtags (CORE_ADDR address, size_t len,
 510                               const gdb::byte_vector &tags, int type);
 511 };
 512
 513 extern process_stratum_target *the_target;
 514
 515 void set_target_ops (process_stratum_target *);
 516
 517 #define target_create_inferior(program, program_args)   \
 518   the_target->create_inferior (program, program_args)
 519
 520 #define target_post_create_inferior()                    \
 521   the_target->post_create_inferior ()
 522
 523 #define myattach(pid) \
 524   the_target->attach (pid)
 525
 526 int kill_inferior (process_info *proc);
 527
 528 #define target_supports_fork_events() \
 529   the_target->supports_fork_events ()
 530
 531 #define target_supports_vfork_events() \
 532   the_target->supports_vfork_events ()
 533
 534 #define target_supports_exec_events() \
 535   the_target->supports_exec_events ()
 536
 537 #define target_supports_memory_tagging() \
 538   the_target->supports_memory_tagging ()
 539
 540 #define target_handle_new_gdb_connection()               \
 541   the_target->handle_new_gdb_connection ()
 542
 543 #define detach_inferior(proc) \
 544   the_target->detach (proc)
 545
 546 #define mythread_alive(pid) \
 547   the_target->thread_alive (pid)
 548
 549 #define fetch_inferior_registers(regcache, regno)       \
 550   the_target->fetch_registers (regcache, regno)
 551
 552 #define store_inferior_registers(regcache, regno) \
 553   the_target->store_registers (regcache, regno)
 554
 555 #define join_inferior(pid) \
 556   the_target->join (pid)
 557
 558 #define target_supports_non_stop() \
 559   the_target->supports_non_stop ()
 560
 561 #define target_async(enable) \
 562   the_target->async (enable)
 563
 564 #define target_process_qsupported(features) \
 565   the_target->process_qsupported (features)
 566
 567 #define target_supports_catch_syscall()                 \
 568   the_target->supports_catch_syscall ()
 569
 570 #define target_get_ipa_tdesc_idx()                      \
 571   the_target->get_ipa_tdesc_idx ()
 572
 573 #define target_supports_tracepoints()                   \
 574   the_target->supports_tracepoints ()
 575
 576 #define target_supports_fast_tracepoints()              \
 577   the_target->supports_fast_tracepoints ()
 578
 579 #define target_get_min_fast_tracepoint_insn_len()       \
 580   the_target->get_min_fast_tracepoint_insn_len ()
 581
 582 #define target_thread_stopped(thread) \
 583   the_target->thread_stopped (thread)
 584
 585 #define target_pause_all(freeze)                \
 586   the_target->pause_all (freeze)
 587
 588 #define target_unpause_all(unfreeze)            \
 589   the_target->unpause_all (unfreeze)
 590
 591 #define target_stabilize_threads()              \
 592   the_target->stabilize_threads ()
 593
 594 #define target_install_fast_tracepoint_jump_pad(tpoint, tpaddr,         \
 595                                                 collector, lockaddr,    \
 596                                                 orig_size,              \
 597                                                 jump_entry,             \
 598                                                 trampoline, trampoline_size, \
 599                                                 jjump_pad_insn,         \
 600                                                 jjump_pad_insn_size,    \
 601                                                 adjusted_insn_addr,     \
 602                                                 adjusted_insn_addr_end, \
 603                                                 err)                    \
 604   the_target->install_fast_tracepoint_jump_pad (tpoint, tpaddr, \
 605                                                 collector,lockaddr,     \
 606                                                 orig_size, jump_entry,  \
 607                                                 trampoline,             \
 608                                                 trampoline_size,        \
 609                                                 jjump_pad_insn,         \
 610                                                 jjump_pad_insn_size,    \
 611                                                 adjusted_insn_addr,     \
 612                                                 adjusted_insn_addr_end, \
 613                                                 err)
 614
 615 #define target_emit_ops() \
 616   the_target->emit_ops ()
 617
 618 #define target_supports_disable_randomization() \
 619   the_target->supports_disable_randomization ()
 620
 621 #define target_supports_agent() \
 622   the_target->supports_agent ()
 623
 624 static inline struct btrace_target_info *
 625 target_enable_btrace (thread_info *tp, const struct btrace_config *conf)
 626 {
 627   return the_target->enable_btrace (tp, conf);
 628 }
 629
 630 static inline int
 631 target_disable_btrace (struct btrace_target_info *tinfo)
 632 {
 633   return the_target->disable_btrace (tinfo);
 634 }
 635
 636 static inline int
 637 target_read_btrace (struct btrace_target_info *tinfo,
 638                     std::string *buffer,
 639                     enum btrace_read_type type)
 640 {
 641   return the_target->read_btrace (tinfo, buffer, type);
 642 }
 643
 644 static inline int
 645 target_read_btrace_conf (struct btrace_target_info *tinfo,
 646                          std::string *buffer)
 647 {
 648   return the_target->read_btrace_conf (tinfo, buffer);
 649 }
 650
 651 #define target_supports_range_stepping() \
 652   the_target->supports_range_stepping ()
 653
 654 #define target_supports_stopped_by_sw_breakpoint() \
 655   the_target->supports_stopped_by_sw_breakpoint ()
 656
 657 #define target_stopped_by_sw_breakpoint() \
 658   the_target->stopped_by_sw_breakpoint ()
 659
 660 #define target_supports_stopped_by_hw_breakpoint() \
 661   the_target->supports_stopped_by_hw_breakpoint ()
 662
 663 #define target_supports_hardware_single_step() \
 664   the_target->supports_hardware_single_step ()
 665
 666 #define target_stopped_by_hw_breakpoint() \
 667   the_target->stopped_by_hw_breakpoint ()
 668
 669 #define target_breakpoint_kind_from_pc(pcptr) \
 670   the_target->breakpoint_kind_from_pc (pcptr)
 671
 672 #define target_breakpoint_kind_from_current_state(pcptr) \
 673   the_target->breakpoint_kind_from_current_state (pcptr)
 674
 675 #define target_supports_software_single_step() \
 676   the_target->supports_software_single_step ()
 677
 678 ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus,
 679                target_wait_flags options, int connected_wait);
 680
 681 #define target_core_of_thread(ptid)             \
 682   the_target->core_of_thread (ptid)
 683
 684 #define target_thread_name(ptid)                                \
 685   the_target->thread_name (ptid)
 686
 687 #define target_thread_handle(ptid, handle, handle_len) \
 688   the_target->thread_handle (ptid, handle, handle_len)
 689
 690 static inline thread_info *
 691 target_thread_pending_parent (thread_info *thread)
 692 {
 693   return the_target->thread_pending_parent (thread);
 694 }
 695
 696 static inline thread_info *
 697 target_thread_pending_child (thread_info *thread)
 698 {
 699   return the_target->thread_pending_child (thread);
 700 }
 701
 702 /* Read LEN bytes from MEMADDR in the buffer MYADDR.  Return 0 if the read
 703    is successful, otherwise, return a non-zero error code.  */
 704
 705 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 706
 707 /* Set GDBserver's current thread to the thread the client requested
 708    via Hg.  Also switches the current process to the requested
 709    process.  If the requested thread is not found in the thread list,
 710    then the current thread is set to NULL.  Likewise, if the requested
 711    process is not found in the process list, then the current process
 712    is set to NULL.  Returns true if the requested thread was found,
 713    false otherwise.  */
 714
 715 bool set_desired_thread ();
 716
 717 /* Set GDBserver's current process to the process the client requested
 718    via Hg.  The current thread is set to NULL.  */
 719
 720 bool set_desired_process ();
 721
 722 std::string target_pid_to_str (ptid_t);
 723
 724 #endif /* GDBSERVER_TARGET_H */