gdbserver/target.h

   1 /* Target operations for the remote server for GDB.
   2    Copyright (C) 2002-2020 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> /* for mode_t */
  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
  34 struct emit_ops;
  35 struct buffer;
  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   /* Prepare to read or write memory from the inferior process.
 144      Targets use this to do what is necessary to get the state of the
 145      inferior such that it is possible to access memory.
 146
 147      This should generally only be called from client facing routines,
 148      such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
 149      insertion routine.
 150
 151      Like `read_memory' and `write_memory' below, returns 0 on success
 152      and errno on failure.  */
 153   virtual int prepare_to_access_memory ();
 154
 155   /* Undo the effects of prepare_to_access_memory.  */
 156   virtual void done_accessing_memory ();
 157
 158   /* Read memory from the inferior process.  This should generally be
 159      called through read_inferior_memory, which handles breakpoint shadowing.
 160
 161      Read LEN bytes at MEMADDR into a buffer at MYADDR.
 162
 163      Returns 0 on success and errno on failure.  */
 164   virtual int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
 165                            int len) = 0;
 166
 167   /* Write memory to the inferior process.  This should generally be
 168      called through target_write_memory, which handles breakpoint shadowing.
 169
 170      Write LEN bytes from the buffer at MYADDR to MEMADDR.
 171
 172      Returns 0 on success and errno on failure.  */
 173   virtual int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
 174                             int len) = 0;
 175
 176   /* Query GDB for the values of any symbols we're interested in.
 177      This function is called whenever we receive a "qSymbols::"
 178      query, which corresponds to every time more symbols (might)
 179      become available.  */
 180   virtual void look_up_symbols ();
 181
 182   /* Send an interrupt request to the inferior process,
 183      however is appropriate.  */
 184   virtual void request_interrupt () = 0;
 185
 186   /* Return true if the read_auxv target op is supported.  */
 187   virtual bool supports_read_auxv ();
 188
 189   /* Read auxiliary vector data from the inferior process.
 190
 191      Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 192   virtual int read_auxv (CORE_ADDR offset, unsigned char *myaddr,
 193                          unsigned int len);
 194
 195   /* Returns true if GDB Z breakpoint type TYPE is supported, false
 196      otherwise.  The type is coded as follows:
 197        '0' - software-breakpoint
 198        '1' - hardware-breakpoint
 199        '2' - write watchpoint
 200        '3' - read watchpoint
 201        '4' - access watchpoint
 202   */
 203   virtual bool supports_z_point_type (char z_type);
 204
 205   /* Insert and remove a break or watchpoint.
 206      Returns 0 on success, -1 on failure and 1 on unsupported.  */
 207   virtual int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
 208                             int size, raw_breakpoint *bp);
 209
 210   virtual int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
 211                             int size, raw_breakpoint *bp);
 212
 213   /* Returns true if the target stopped because it executed a software
 214      breakpoint instruction, false otherwise.  */
 215   virtual bool stopped_by_sw_breakpoint ();
 216
 217   /* Returns true if the target knows whether a trap was caused by a
 218      SW breakpoint triggering.  */
 219   virtual bool supports_stopped_by_sw_breakpoint ();
 220
 221   /* Returns true if the target stopped for a hardware breakpoint.  */
 222   virtual bool stopped_by_hw_breakpoint ();
 223
 224   /* Returns true if the target knows whether a trap was caused by a
 225      HW breakpoint triggering.  */
 226   virtual bool supports_stopped_by_hw_breakpoint ();
 227
 228   /* Returns true if the target can do hardware single step.  */
 229   virtual bool supports_hardware_single_step ();
 230
 231   /* Returns true if target was stopped due to a watchpoint hit, false
 232      otherwise.  */
 233   virtual bool stopped_by_watchpoint ();
 234
 235   /* Returns the address associated with the watchpoint that hit, if any;
 236      returns 0 otherwise.  */
 237   virtual CORE_ADDR stopped_data_address ();
 238
 239   /* Return true if the read_offsets target op is supported.  */
 240   virtual bool supports_read_offsets ();
 241
 242   /* Reports the text, data offsets of the executable.  This is
 243      needed for uclinux where the executable is relocated during load
 244      time.  */
 245   virtual int read_offsets (CORE_ADDR *text, CORE_ADDR *data);
 246
 247   /* Return true if the get_tls_address target op is supported.  */
 248   virtual bool supports_get_tls_address ();
 249
 250   /* Fetch the address associated with a specific thread local storage
 251      area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
 252      Stores it in *ADDRESS and returns zero on success; otherwise returns
 253      an error code.  A return value of -1 means this system does not
 254      support the operation.  */
 255   virtual int get_tls_address (thread_info *thread, CORE_ADDR offset,
 256                                CORE_ADDR load_module, CORE_ADDR *address);
 257
 258   /* Fill BUF with an hostio error packet representing the last hostio
 259      error.  */
 260   virtual void hostio_last_error (char *buf);
 261
 262   /* Return true if the qxfer_osdata target op is supported.  */
 263   virtual bool supports_qxfer_osdata ();
 264
 265   /* Read/Write OS data using qXfer packets.  */
 266   virtual int qxfer_osdata (const char *annex, unsigned char *readbuf,
 267                             unsigned const char *writebuf,
 268                             CORE_ADDR offset, int len);
 269
 270   /* Return true if the qxfer_siginfo target op is supported.  */
 271   virtual bool supports_qxfer_siginfo ();
 272
 273   /* Read/Write extra signal info.  */
 274   virtual int qxfer_siginfo (const char *annex, unsigned char *readbuf,
 275                              unsigned const char *writebuf,
 276                              CORE_ADDR offset, int len);
 277
 278   /* Return true if non-stop mode is supported.  */
 279   virtual bool supports_non_stop ();
 280
 281   /* Enables async target events.  Returns the previous enable
 282      state.  */
 283   virtual bool async (bool enable);
 284
 285   /* Switch to non-stop (ENABLE == true) or all-stop (ENABLE == false)
 286      mode.  Return 0 on success, -1 otherwise.  */
 287   virtual int start_non_stop (bool enable);
 288
 289   /* Returns true if the target supports multi-process debugging.  */
 290   virtual bool supports_multi_process ();
 291
 292   /* Returns true if fork events are supported.  */
 293   virtual bool supports_fork_events ();
 294
 295   /* Returns true if vfork events are supported.  */
 296   virtual bool supports_vfork_events ();
 297
 298   /* Returns true if exec events are supported.  */
 299   virtual bool supports_exec_events ();
 300
 301   /* Allows target to re-initialize connection-specific settings.  */
 302   virtual void handle_new_gdb_connection ();
 303
 304   /* The target-specific routine to process monitor command.
 305      Returns 1 if handled, or 0 to perform default processing.  */
 306   virtual int handle_monitor_command (char *mon);
 307
 308   /* Returns the core given a thread, or -1 if not known.  */
 309   virtual int core_of_thread (ptid_t ptid);
 310
 311   /* Returns true if the read_loadmap target op is supported.  */
 312   virtual bool supports_read_loadmap ();
 313
 314   /* Read loadmaps.  Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 315   virtual int read_loadmap (const char *annex, CORE_ADDR offset,
 316                             unsigned char *myaddr, unsigned int len);
 317
 318   /* Target specific qSupported support.  FEATURES is an array of
 319      features unsupported by the core of GDBserver.  */
 320   virtual void process_qsupported
 321     (gdb::array_view<const char * const> features);
 322
 323   /* Return true if the target supports tracepoints, false otherwise.  */
 324   virtual bool supports_tracepoints ();
 325
 326   /* Read PC from REGCACHE.  */
 327   virtual CORE_ADDR read_pc (regcache *regcache);
 328
 329   /* Write PC to REGCACHE.  */
 330   virtual void write_pc (regcache *regcache, CORE_ADDR pc);
 331
 332   /* Return true if the thread_stopped op is supported.  */
 333   virtual bool supports_thread_stopped ();
 334
 335   /* Return true if THREAD is known to be stopped now.  */
 336   virtual bool thread_stopped (thread_info *thread);
 337
 338   /* Return true if the get_tib_address op is supported.  */
 339   virtual bool supports_get_tib_address ();
 340
 341   /* Read Thread Information Block address.  */
 342   virtual int get_tib_address (ptid_t ptid, CORE_ADDR *address);
 343
 344   /* Pause all threads.  If FREEZE, arrange for any resume attempt to
 345      be ignored until an unpause_all call unfreezes threads again.
 346      There can be nested calls to pause_all, so a freeze counter
 347      should be maintained.  */
 348   virtual void pause_all (bool freeze);
 349
 350   /* Unpause all threads.  Threads that hadn't been resumed by the
 351      client should be left stopped.  Basically a pause/unpause call
 352      pair should not end up resuming threads that were stopped before
 353      the pause call.  */
 354   virtual void unpause_all (bool unfreeze);
 355
 356   /* Stabilize all threads.  That is, force them out of jump pads.  */
 357   virtual void stabilize_threads ();
 358
 359   /* Return true if the install_fast_tracepoint_jump_pad op is
 360      supported.  */
 361   virtual bool supports_fast_tracepoints ();
 362
 363   /* Install a fast tracepoint jump pad.  TPOINT is the address of the
 364      tracepoint internal object as used by the IPA agent.  TPADDR is
 365      the address of tracepoint.  COLLECTOR is address of the function
 366      the jump pad redirects to.  LOCKADDR is the address of the jump
 367      pad lock object.  ORIG_SIZE is the size in bytes of the
 368      instruction at TPADDR.  JUMP_ENTRY points to the address of the
 369      jump pad entry, and on return holds the address past the end of
 370      the created jump pad.  If a trampoline is created by the function,
 371      then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
 372      the trampoline, else they remain unchanged.  JJUMP_PAD_INSN is a
 373      buffer containing a copy of the instruction at TPADDR.
 374      ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
 375      return the address range where the instruction at TPADDR was relocated
 376      to.  If an error occurs, the ERR may be used to pass on an error
 377      message.  */
 378   virtual int install_fast_tracepoint_jump_pad
 379     (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
 380      CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
 381      CORE_ADDR *trampoline, ULONGEST *trampoline_size,
 382      unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
 383      CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
 384      char *err);
 385
 386   /* Return the minimum length of an instruction that can be safely
 387      overwritten for use as a fast tracepoint.  */
 388   virtual int get_min_fast_tracepoint_insn_len ();
 389
 390   /* Return the bytecode operations vector for the current inferior.
 391      Returns nullptr if bytecode compilation is not supported.  */
 392   virtual struct emit_ops *emit_ops ();
 393
 394   /* Returns true if the target supports disabling randomization.  */
 395   virtual bool supports_disable_randomization ();
 396
 397   /* Return true if the qxfer_libraries_svr4 op is supported.  */
 398   virtual bool supports_qxfer_libraries_svr4 ();
 399
 400   /* Read solib info on SVR4 platforms.  */
 401   virtual int qxfer_libraries_svr4 (const char *annex,
 402                                     unsigned char *readbuf,
 403                                     unsigned const char *writebuf,
 404                                     CORE_ADDR offset, int len);
 405
 406   /* Return true if target supports debugging agent.  */
 407   virtual bool supports_agent ();
 408
 409   /* Enable branch tracing for PTID based on CONF and allocate a branch trace
 410      target information struct for reading and for disabling branch trace.  */
 411   virtual btrace_target_info *enable_btrace (ptid_t ptid,
 412                                              const btrace_config *conf);
 413
 414   /* Disable branch tracing.
 415      Returns zero on success, non-zero otherwise.  */
 416   virtual int disable_btrace (btrace_target_info *tinfo);
 417
 418   /* Read branch trace data into buffer.
 419      Return 0 on success; print an error message into BUFFER and return -1,
 420      otherwise.  */
 421   virtual int read_btrace (btrace_target_info *tinfo, buffer *buf,
 422                            enum btrace_read_type type);
 423
 424   /* Read the branch trace configuration into BUFFER.
 425      Return 0 on success; print an error message into BUFFER and return -1
 426      otherwise.  */
 427   virtual int read_btrace_conf (const btrace_target_info *tinfo,
 428                                 buffer *buf);
 429
 430   /* Return true if target supports range stepping.  */
 431   virtual bool supports_range_stepping ();
 432
 433   /* Return true if the pid_to_exec_file op is supported.  */
 434   virtual bool supports_pid_to_exec_file ();
 435
 436   /* Return the full absolute name of the executable file that was
 437      run to create the process PID.  If the executable file cannot
 438      be determined, NULL is returned.  Otherwise, a pointer to a
 439      character string containing the pathname is returned.  This
 440      string should be copied into a buffer by the client if the string
 441      will not be immediately used, or if it must persist.  */
 442   virtual char *pid_to_exec_file (int pid);
 443
 444   /* Return true if any of the multifs ops is supported.  */
 445   virtual bool supports_multifs ();
 446
 447   /* Multiple-filesystem-aware open.  Like open(2), but operating in
 448      the filesystem as it appears to process PID.  Systems where all
 449      processes share a common filesystem should not override this.
 450      The default behavior is to use open(2).  */
 451   virtual int multifs_open (int pid, const char *filename,
 452                             int flags, mode_t mode);
 453
 454   /* Multiple-filesystem-aware unlink.  Like unlink(2), but operates
 455      in the filesystem as it appears to process PID.  Systems where
 456      all processes share a common filesystem should not override this.
 457      The default behavior is to use unlink(2).  */
 458   virtual int multifs_unlink (int pid, const char *filename);
 459
 460   /* Multiple-filesystem-aware readlink.  Like readlink(2), but
 461      operating in the filesystem as it appears to process PID.
 462      Systems where all processes share a common filesystem should
 463      not override this.  The default behavior is to use readlink(2).  */
 464   virtual ssize_t multifs_readlink (int pid, const char *filename,
 465                                     char *buf, size_t bufsiz);
 466
 467   /* Return the breakpoint kind for this target based on PC.  The
 468      PCPTR is adjusted to the real memory location in case a flag
 469      (e.g., the Thumb bit on ARM) was present in the PC.  */
 470   virtual int breakpoint_kind_from_pc (CORE_ADDR *pcptr);
 471
 472   /* Return the software breakpoint from KIND.  KIND can have target
 473      specific meaning like the Z0 kind parameter.
 474      SIZE is set to the software breakpoint's length in memory.  */
 475   virtual const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) = 0;
 476
 477   /* Return the breakpoint kind for this target based on the current
 478      processor state (e.g. the current instruction mode on ARM) and the
 479      PC.  The PCPTR is adjusted to the real memory location in case a
 480      flag (e.g., the Thumb bit on ARM) is present in the  PC.  */
 481   virtual int breakpoint_kind_from_current_state (CORE_ADDR *pcptr);
 482
 483   /* Return the thread's name, or NULL if the target is unable to
 484      determine it.  The returned value must not be freed by the
 485      caller.  */
 486   virtual const char *thread_name (ptid_t thread);
 487
 488   /* Thread ID to (numeric) thread handle: Return true on success and
 489      false for failure.  Return pointer to thread handle via HANDLE
 490      and the handle's length via HANDLE_LEN.  */
 491   virtual bool thread_handle (ptid_t ptid, gdb_byte **handle,
 492                               int *handle_len);
 493
 494   /* Returns true if the target can software single step.  */
 495   virtual bool supports_software_single_step ();
 496
 497   /* Return true if the target supports catch syscall.  */
 498   virtual bool supports_catch_syscall ();
 499
 500   /* Return tdesc index for IPA.  */
 501   virtual int get_ipa_tdesc_idx ();
 502 };
 503
 504 extern process_stratum_target *the_target;
 505
 506 void set_target_ops (process_stratum_target *);
 507
 508 #define target_create_inferior(program, program_args)   \
 509   the_target->create_inferior (program, program_args)
 510
 511 #define target_post_create_inferior()                    \
 512   the_target->post_create_inferior ()
 513
 514 #define myattach(pid) \
 515   the_target->attach (pid)
 516
 517 int kill_inferior (process_info *proc);
 518
 519 #define target_supports_fork_events() \
 520   the_target->supports_fork_events ()
 521
 522 #define target_supports_vfork_events() \
 523   the_target->supports_vfork_events ()
 524
 525 #define target_supports_exec_events() \
 526   the_target->supports_exec_events ()
 527
 528 #define target_handle_new_gdb_connection()               \
 529   the_target->handle_new_gdb_connection ()
 530
 531 #define detach_inferior(proc) \
 532   the_target->detach (proc)
 533
 534 #define mythread_alive(pid) \
 535   the_target->thread_alive (pid)
 536
 537 #define fetch_inferior_registers(regcache, regno)       \
 538   the_target->fetch_registers (regcache, regno)
 539
 540 #define store_inferior_registers(regcache, regno) \
 541   the_target->store_registers (regcache, regno)
 542
 543 #define join_inferior(pid) \
 544   the_target->join (pid)
 545
 546 #define target_supports_non_stop() \
 547   the_target->supports_non_stop ()
 548
 549 #define target_async(enable) \
 550   the_target->async (enable)
 551
 552 #define target_process_qsupported(features) \
 553   the_target->process_qsupported (features)
 554
 555 #define target_supports_catch_syscall()                 \
 556   the_target->supports_catch_syscall ()
 557
 558 #define target_get_ipa_tdesc_idx()                      \
 559   the_target->get_ipa_tdesc_idx ()
 560
 561 #define target_supports_tracepoints()                   \
 562   the_target->supports_tracepoints ()
 563
 564 #define target_supports_fast_tracepoints()              \
 565   the_target->supports_fast_tracepoints ()
 566
 567 #define target_get_min_fast_tracepoint_insn_len()       \
 568   the_target->get_min_fast_tracepoint_insn_len ()
 569
 570 #define target_thread_stopped(thread) \
 571   the_target->thread_stopped (thread)
 572
 573 #define target_pause_all(freeze)                \
 574   the_target->pause_all (freeze)
 575
 576 #define target_unpause_all(unfreeze)            \
 577   the_target->unpause_all (unfreeze)
 578
 579 #define target_stabilize_threads()              \
 580   the_target->stabilize_threads ()
 581
 582 #define target_install_fast_tracepoint_jump_pad(tpoint, tpaddr,         \
 583                                                 collector, lockaddr,    \
 584                                                 orig_size,              \
 585                                                 jump_entry,             \
 586                                                 trampoline, trampoline_size, \
 587                                                 jjump_pad_insn,         \
 588                                                 jjump_pad_insn_size,    \
 589                                                 adjusted_insn_addr,     \
 590                                                 adjusted_insn_addr_end, \
 591                                                 err)                    \
 592   the_target->install_fast_tracepoint_jump_pad (tpoint, tpaddr, \
 593                                                 collector,lockaddr,     \
 594                                                 orig_size, jump_entry,  \
 595                                                 trampoline,             \
 596                                                 trampoline_size,        \
 597                                                 jjump_pad_insn,         \
 598                                                 jjump_pad_insn_size,    \
 599                                                 adjusted_insn_addr,     \
 600                                                 adjusted_insn_addr_end, \
 601                                                 err)
 602
 603 #define target_emit_ops() \
 604   the_target->emit_ops ()
 605
 606 #define target_supports_disable_randomization() \
 607   the_target->supports_disable_randomization ()
 608
 609 #define target_supports_agent() \
 610   the_target->supports_agent ()
 611
 612 static inline struct btrace_target_info *
 613 target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
 614 {
 615   return the_target->enable_btrace (ptid, conf);
 616 }
 617
 618 static inline int
 619 target_disable_btrace (struct btrace_target_info *tinfo)
 620 {
 621   return the_target->disable_btrace (tinfo);
 622 }
 623
 624 static inline int
 625 target_read_btrace (struct btrace_target_info *tinfo,
 626                     struct buffer *buffer,
 627                     enum btrace_read_type type)
 628 {
 629   return the_target->read_btrace (tinfo, buffer, type);
 630 }
 631
 632 static inline int
 633 target_read_btrace_conf (struct btrace_target_info *tinfo,
 634                          struct buffer *buffer)
 635 {
 636   return the_target->read_btrace_conf (tinfo, buffer);
 637 }
 638
 639 #define target_supports_range_stepping() \
 640   the_target->supports_range_stepping ()
 641
 642 #define target_supports_stopped_by_sw_breakpoint() \
 643   the_target->supports_stopped_by_sw_breakpoint ()
 644
 645 #define target_stopped_by_sw_breakpoint() \
 646   the_target->stopped_by_sw_breakpoint ()
 647
 648 #define target_supports_stopped_by_hw_breakpoint() \
 649   the_target->supports_stopped_by_hw_breakpoint ()
 650
 651 #define target_supports_hardware_single_step() \
 652   the_target->supports_hardware_single_step ()
 653
 654 #define target_stopped_by_hw_breakpoint() \
 655   the_target->stopped_by_hw_breakpoint ()
 656
 657 #define target_breakpoint_kind_from_pc(pcptr) \
 658   the_target->breakpoint_kind_from_pc (pcptr)
 659
 660 #define target_breakpoint_kind_from_current_state(pcptr) \
 661   the_target->breakpoint_kind_from_current_state (pcptr)
 662
 663 #define target_supports_software_single_step() \
 664   the_target->supports_software_single_step ()
 665
 666 ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus,
 667                target_wait_flags options, int connected_wait);
 668
 669 /* Prepare to read or write memory from the inferior process.  See the
 670    corresponding process_stratum_target methods for more details.  */
 671
 672 int prepare_to_access_memory (void);
 673 void done_accessing_memory (void);
 674
 675 #define target_core_of_thread(ptid)             \
 676   the_target->core_of_thread (ptid)
 677
 678 #define target_thread_name(ptid)                                \
 679   the_target->thread_name (ptid)
 680
 681 #define target_thread_handle(ptid, handle, handle_len) \
 682   the_target->thread_handle (ptid, handle, handle_len)
 683
 684 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 685
 686 int set_desired_thread ();
 687
 688 const char *target_pid_to_str (ptid_t);
 689
 690 #endif /* GDBSERVER_TARGET_H */