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