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