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