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