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   /* Enable branch tracing for PTID based on CONF and allocate a branch trace
  74      target information struct for reading and for disabling branch trace.  */
  75   struct btrace_target_info *(*enable_btrace)
  76     (ptid_t ptid, const struct btrace_config *conf);
  77
  78   /* Disable branch tracing.
  79      Returns zero on success, non-zero otherwise.  */
  80   int (*disable_btrace) (struct btrace_target_info *tinfo);
  81
  82   /* Read branch trace data into buffer.
  83      Return 0 on success; print an error message into BUFFER and return -1,
  84      otherwise.  */
  85   int (*read_btrace) (struct btrace_target_info *, struct buffer *,
  86                       enum btrace_read_type type);
  87
  88   /* Read the branch trace configuration into BUFFER.
  89      Return 0 on success; print an error message into BUFFER and return -1
  90      otherwise.  */
  91   int (*read_btrace_conf) (const struct btrace_target_info *, struct buffer *);
  92
  93   /* Return true if target supports range stepping.  */
  94   int (*supports_range_stepping) (void);
  95
  96   /* Return the full absolute name of the executable file that was
  97      run to create the process PID.  If the executable file cannot
  98      be determined, NULL is returned.  Otherwise, a pointer to a
  99      character string containing the pathname is returned.  This
 100      string should be copied into a buffer by the client if the string
 101      will not be immediately used, or if it must persist.  */
 102   char *(*pid_to_exec_file) (int pid);
 103
 104   /* Multiple-filesystem-aware open.  Like open(2), but operating in
 105      the filesystem as it appears to process PID.  Systems where all
 106      processes share a common filesystem should set this to NULL.
 107      If NULL, the caller should fall back to open(2).  */
 108   int (*multifs_open) (int pid, const char *filename,
 109                        int flags, mode_t mode);
 110
 111   /* Multiple-filesystem-aware unlink.  Like unlink(2), but operates
 112      in the filesystem as it appears to process PID.  Systems where
 113      all processes share a common filesystem should set this to NULL.
 114      If NULL, the caller should fall back to unlink(2).  */
 115   int (*multifs_unlink) (int pid, const char *filename);
 116
 117   /* Multiple-filesystem-aware readlink.  Like readlink(2), but
 118      operating in the filesystem as it appears to process PID.
 119      Systems where all processes share a common filesystem should
 120      set this to NULL.  If NULL, the caller should fall back to
 121      readlink(2).  */
 122   ssize_t (*multifs_readlink) (int pid, const char *filename,
 123                                char *buf, size_t bufsiz);
 124
 125   /* Return the breakpoint kind for this target based on PC.  The PCPTR is
 126      adjusted to the real memory location in case a flag (e.g., the Thumb bit on
 127      ARM) was present in the PC.  */
 128   int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr);
 129
 130   /* Return the software breakpoint from KIND.  KIND can have target
 131      specific meaning like the Z0 kind parameter.
 132      SIZE is set to the software breakpoint's length in memory.  */
 133   const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size);
 134
 135   /* Return the thread's name, or NULL if the target is unable to determine it.
 136      The returned value must not be freed by the caller.  */
 137   const char *(*thread_name) (ptid_t thread);
 138
 139   /* Return the breakpoint kind for this target based on the current
 140      processor state (e.g. the current instruction mode on ARM) and the
 141      PC.  The PCPTR is adjusted to the real memory location in case a flag
 142      (e.g., the Thumb bit on ARM) is present in the PC.  */
 143   int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
 144
 145   /* Returns true if the target can software single step.  */
 146   int (*supports_software_single_step) (void);
 147
 148   /* Return 1 if the target supports catch syscall, 0 (or leave the
 149      callback NULL) otherwise.  */
 150   int (*supports_catch_syscall) (void);
 151
 152   /* Return tdesc index for IPA.  */
 153   int (*get_ipa_tdesc_idx) (void);
 154
 155   /* Thread ID to (numeric) thread handle: Return true on success and
 156      false for failure.  Return pointer to thread handle via HANDLE
 157      and the handle's length via HANDLE_LEN.  */
 158   bool (*thread_handle) (ptid_t ptid, gdb_byte **handle, int *handle_len);
 159
 160   /* The object that will gradually replace this struct.  */
 161   process_target *pt;
 162 };
 163
 164 class process_target
 165 {
 166 public:
 167
 168   virtual ~process_target () = default;
 169
 170   /* Start a new process.
 171
 172      PROGRAM is a path to the program to execute.
 173      PROGRAM_ARGS is a standard NULL-terminated array of arguments,
 174      to be passed to the inferior as ``argv'' (along with PROGRAM).
 175
 176      Returns the new PID on success, -1 on failure.  Registers the new
 177      process with the process list.  */
 178   virtual int create_inferior (const char *program,
 179                                const std::vector<char *> &program_args) = 0;
 180
 181   /* Do additional setup after a new process is created, including
 182      exec-wrapper completion.  */
 183   virtual void post_create_inferior ();
 184
 185   /* Attach to a running process.
 186
 187      PID is the process ID to attach to, specified by the user
 188      or a higher layer.
 189
 190      Returns -1 if attaching is unsupported, 0 on success, and calls
 191      error() otherwise.  */
 192   virtual int attach (unsigned long pid) = 0;
 193
 194   /* Kill process PROC.  Return -1 on failure, and 0 on success.  */
 195   virtual int kill (process_info *proc) = 0;
 196
 197   /* Detach from process PROC.  Return -1 on failure, and 0 on
 198      success.  */
 199   virtual int detach (process_info *proc) = 0;
 200
 201   /* The inferior process has died.  Do what is right.  */
 202   virtual void mourn (process_info *proc) = 0;
 203
 204   /* Wait for process PID to exit.  */
 205   virtual void join (int pid) = 0;
 206
 207   /* Return true iff the thread with process ID PID is alive.  */
 208   virtual bool thread_alive (ptid_t pid) = 0;
 209
 210   /* Resume the inferior process.  */
 211   virtual void resume (thread_resume *resume_info, size_t n) = 0;
 212
 213   /* Wait for the inferior process or thread to change state.  Store
 214      status through argument pointer STATUS.
 215
 216      PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
 217      wait for any thread of process pid to do something.  Return ptid
 218      of child, or -1 in case of error; store status through argument
 219      pointer STATUS.  OPTIONS is a bit set of options defined as
 220      TARGET_W* above.  If options contains TARGET_WNOHANG and there's
 221      no child stop to report, return is
 222      null_ptid/TARGET_WAITKIND_IGNORE.  */
 223   virtual ptid_t wait (ptid_t ptid, target_waitstatus *status,
 224                        int options) = 0;
 225
 226   /* Fetch registers from the inferior process.
 227
 228      If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO.  */
 229   virtual void fetch_registers (regcache *regcache, int regno) = 0;
 230
 231   /* Store registers to the inferior process.
 232
 233      If REGNO is -1, store all registers; otherwise, store at least REGNO.  */
 234   virtual void store_registers (regcache *regcache, int regno) = 0;
 235
 236   /* Prepare to read or write memory from the inferior process.
 237      Targets use this to do what is necessary to get the state of the
 238      inferior such that it is possible to access memory.
 239
 240      This should generally only be called from client facing routines,
 241      such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
 242      insertion routine.
 243
 244      Like `read_memory' and `write_memory' below, returns 0 on success
 245      and errno on failure.  */
 246   virtual int prepare_to_access_memory ();
 247
 248   /* Undo the effects of prepare_to_access_memory.  */
 249   virtual void done_accessing_memory ();
 250
 251   /* Read memory from the inferior process.  This should generally be
 252      called through read_inferior_memory, which handles breakpoint shadowing.
 253
 254      Read LEN bytes at MEMADDR into a buffer at MYADDR.
 255
 256      Returns 0 on success and errno on failure.  */
 257   virtual int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
 258                            int len) = 0;
 259
 260   /* Write memory to the inferior process.  This should generally be
 261      called through target_write_memory, which handles breakpoint shadowing.
 262
 263      Write LEN bytes from the buffer at MYADDR to MEMADDR.
 264
 265      Returns 0 on success and errno on failure.  */
 266   virtual int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
 267                             int len) = 0;
 268
 269   /* Query GDB for the values of any symbols we're interested in.
 270      This function is called whenever we receive a "qSymbols::"
 271      query, which corresponds to every time more symbols (might)
 272      become available.  */
 273   virtual void look_up_symbols ();
 274
 275   /* Send an interrupt request to the inferior process,
 276      however is appropriate.  */
 277   virtual void request_interrupt () = 0;
 278
 279   /* Return true if the read_auxv target op is supported.  */
 280   virtual bool supports_read_auxv ();
 281
 282   /* Read auxiliary vector data from the inferior process.
 283
 284      Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 285   virtual int read_auxv (CORE_ADDR offset, unsigned char *myaddr,
 286                          unsigned int len);
 287
 288   /* Returns true if GDB Z breakpoint type TYPE is supported, false
 289      otherwise.  The type is coded as follows:
 290        '0' - software-breakpoint
 291        '1' - hardware-breakpoint
 292        '2' - write watchpoint
 293        '3' - read watchpoint
 294        '4' - access watchpoint
 295   */
 296   virtual bool supports_z_point_type (char z_type);
 297
 298   /* Insert and remove a break or watchpoint.
 299      Returns 0 on success, -1 on failure and 1 on unsupported.  */
 300   virtual int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
 301                             int size, raw_breakpoint *bp);
 302
 303   virtual int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
 304                             int size, raw_breakpoint *bp);
 305
 306   /* Returns true if the target stopped because it executed a software
 307      breakpoint instruction, false otherwise.  */
 308   virtual bool stopped_by_sw_breakpoint ();
 309
 310   /* Returns true if the target knows whether a trap was caused by a
 311      SW breakpoint triggering.  */
 312   virtual bool supports_stopped_by_sw_breakpoint ();
 313
 314   /* Returns true if the target stopped for a hardware breakpoint.  */
 315   virtual bool stopped_by_hw_breakpoint ();
 316
 317   /* Returns true if the target knows whether a trap was caused by a
 318      HW breakpoint triggering.  */
 319   virtual bool supports_stopped_by_hw_breakpoint ();
 320
 321   /* Returns true if the target can do hardware single step.  */
 322   virtual bool supports_hardware_single_step ();
 323
 324   /* Returns true if target was stopped due to a watchpoint hit, false
 325      otherwise.  */
 326   virtual bool stopped_by_watchpoint ();
 327
 328   /* Returns the address associated with the watchpoint that hit, if any;
 329      returns 0 otherwise.  */
 330   virtual CORE_ADDR stopped_data_address ();
 331
 332   /* Return true if the read_offsets target op is supported.  */
 333   virtual bool supports_read_offsets ();
 334
 335   /* Reports the text, data offsets of the executable.  This is
 336      needed for uclinux where the executable is relocated during load
 337      time.  */
 338   virtual int read_offsets (CORE_ADDR *text, CORE_ADDR *data);
 339
 340   /* Return true if the get_tls_address target op is supported.  */
 341   virtual bool supports_get_tls_address ();
 342
 343   /* Fetch the address associated with a specific thread local storage
 344      area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
 345      Stores it in *ADDRESS and returns zero on success; otherwise returns
 346      an error code.  A return value of -1 means this system does not
 347      support the operation.  */
 348   virtual int get_tls_address (thread_info *thread, CORE_ADDR offset,
 349                                CORE_ADDR load_module, CORE_ADDR *address);
 350
 351   /* Fill BUF with an hostio error packet representing the last hostio
 352      error.  */
 353   virtual void hostio_last_error (char *buf);
 354
 355   /* Return true if the qxfer_osdata target op is supported.  */
 356   virtual bool supports_qxfer_osdata ();
 357
 358   /* Read/Write OS data using qXfer packets.  */
 359   virtual int qxfer_osdata (const char *annex, unsigned char *readbuf,
 360                             unsigned const char *writebuf,
 361                             CORE_ADDR offset, int len);
 362
 363   /* Return true if the qxfer_siginfo target op is supported.  */
 364   virtual bool supports_qxfer_siginfo ();
 365
 366   /* Read/Write extra signal info.  */
 367   virtual int qxfer_siginfo (const char *annex, unsigned char *readbuf,
 368                              unsigned const char *writebuf,
 369                              CORE_ADDR offset, int len);
 370
 371   /* Return true if non-stop mode is supported.  */
 372   virtual bool supports_non_stop ();
 373
 374   /* Enables async target events.  Returns the previous enable
 375      state.  */
 376   virtual bool async (bool enable);
 377
 378   /* Switch to non-stop (ENABLE == true) or all-stop (ENABLE == false)
 379      mode.  Return 0 on success, -1 otherwise.  */
 380   virtual int start_non_stop (bool enable);
 381
 382   /* Returns true if the target supports multi-process debugging.  */
 383   virtual bool supports_multi_process ();
 384
 385   /* Returns true if fork events are supported.  */
 386   virtual bool supports_fork_events ();
 387
 388   /* Returns true if vfork events are supported.  */
 389   virtual bool supports_vfork_events ();
 390
 391   /* Returns true if exec events are supported.  */
 392   virtual bool supports_exec_events ();
 393
 394   /* Allows target to re-initialize connection-specific settings.  */
 395   virtual void handle_new_gdb_connection ();
 396
 397   /* The target-specific routine to process monitor command.
 398      Returns 1 if handled, or 0 to perform default processing.  */
 399   virtual int handle_monitor_command (char *mon);
 400
 401   /* Returns the core given a thread, or -1 if not known.  */
 402   virtual int core_of_thread (ptid_t ptid);
 403
 404   /* Returns true if the read_loadmap target op is supported.  */
 405   virtual bool supports_read_loadmap ();
 406
 407   /* Read loadmaps.  Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 408   virtual int read_loadmap (const char *annex, CORE_ADDR offset,
 409                             unsigned char *myaddr, unsigned int len);
 410
 411   /* Target specific qSupported support.  FEATURES is an array of
 412      features with COUNT elements.  */
 413   virtual void process_qsupported (char **features, int count);
 414
 415   /* Return true if the target supports tracepoints, false otherwise.  */
 416   virtual bool supports_tracepoints ();
 417
 418   /* Read PC from REGCACHE.  */
 419   virtual CORE_ADDR read_pc (regcache *regcache);
 420
 421   /* Write PC to REGCACHE.  */
 422   virtual void write_pc (regcache *regcache, CORE_ADDR pc);
 423
 424   /* Return true if the thread_stopped op is supported.  */
 425   virtual bool supports_thread_stopped ();
 426
 427   /* Return true if THREAD is known to be stopped now.  */
 428   virtual bool thread_stopped (thread_info *thread);
 429
 430   /* Return true if the get_tib_address op is supported.  */
 431   virtual bool supports_get_tib_address ();
 432
 433   /* Read Thread Information Block address.  */
 434   virtual int get_tib_address (ptid_t ptid, CORE_ADDR *address);
 435
 436   /* Pause all threads.  If FREEZE, arrange for any resume attempt to
 437      be ignored until an unpause_all call unfreezes threads again.
 438      There can be nested calls to pause_all, so a freeze counter
 439      should be maintained.  */
 440   virtual void pause_all (bool freeze);
 441
 442   /* Unpause all threads.  Threads that hadn't been resumed by the
 443      client should be left stopped.  Basically a pause/unpause call
 444      pair should not end up resuming threads that were stopped before
 445      the pause call.  */
 446   virtual void unpause_all (bool unfreeze);
 447
 448   /* Stabilize all threads.  That is, force them out of jump pads.  */
 449   virtual void stabilize_threads ();
 450
 451   /* Return true if the install_fast_tracepoint_jump_pad op is
 452      supported.  */
 453   virtual bool supports_fast_tracepoints ();
 454
 455   /* Install a fast tracepoint jump pad.  TPOINT is the address of the
 456      tracepoint internal object as used by the IPA agent.  TPADDR is
 457      the address of tracepoint.  COLLECTOR is address of the function
 458      the jump pad redirects to.  LOCKADDR is the address of the jump
 459      pad lock object.  ORIG_SIZE is the size in bytes of the
 460      instruction at TPADDR.  JUMP_ENTRY points to the address of the
 461      jump pad entry, and on return holds the address past the end of
 462      the created jump pad.  If a trampoline is created by the function,
 463      then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
 464      the trampoline, else they remain unchanged.  JJUMP_PAD_INSN is a
 465      buffer containing a copy of the instruction at TPADDR.
 466      ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
 467      return the address range where the instruction at TPADDR was relocated
 468      to.  If an error occurs, the ERR may be used to pass on an error
 469      message.  */
 470   virtual int install_fast_tracepoint_jump_pad
 471     (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
 472      CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
 473      CORE_ADDR *trampoline, ULONGEST *trampoline_size,
 474      unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
 475      CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
 476      char *err);
 477
 478   /* Return the minimum length of an instruction that can be safely
 479      overwritten for use as a fast tracepoint.  */
 480   virtual int get_min_fast_tracepoint_insn_len ();
 481
 482   /* Return the bytecode operations vector for the current inferior.
 483      Returns nullptr if bytecode compilation is not supported.  */
 484   virtual struct emit_ops *emit_ops ();
 485
 486   /* Returns true if the target supports disabling randomization.  */
 487   virtual bool supports_disable_randomization ();
 488
 489   /* Return true if the qxfer_libraries_svr4 op is supported.  */
 490   virtual bool supports_qxfer_libraries_svr4 ();
 491
 492   /* Read solib info on SVR4 platforms.  */
 493   virtual int qxfer_libraries_svr4 (const char *annex,
 494                                     unsigned char *readbuf,
 495                                     unsigned const char *writebuf,
 496                                     CORE_ADDR offset, int len);
 497
 498   /* Return true if target supports debugging agent.  */
 499   virtual bool supports_agent ();
 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->pt->create_inferior (program, program_args)
 508
 509 #define target_post_create_inferior()                    \
 510   the_target->pt->post_create_inferior ()
 511
 512 #define myattach(pid) \
 513   the_target->pt->attach (pid)
 514
 515 int kill_inferior (process_info *proc);
 516
 517 #define target_supports_fork_events() \
 518   the_target->pt->supports_fork_events ()
 519
 520 #define target_supports_vfork_events() \
 521   the_target->pt->supports_vfork_events ()
 522
 523 #define target_supports_exec_events() \
 524   the_target->pt->supports_exec_events ()
 525
 526 #define target_handle_new_gdb_connection()               \
 527   the_target->pt->handle_new_gdb_connection ()
 528
 529 #define detach_inferior(proc) \
 530   the_target->pt->detach (proc)
 531
 532 #define mythread_alive(pid) \
 533   the_target->pt->thread_alive (pid)
 534
 535 #define fetch_inferior_registers(regcache, regno)       \
 536   the_target->pt->fetch_registers (regcache, regno)
 537
 538 #define store_inferior_registers(regcache, regno) \
 539   the_target->pt->store_registers (regcache, regno)
 540
 541 #define join_inferior(pid) \
 542   the_target->pt->join (pid)
 543
 544 #define target_supports_non_stop() \
 545   the_target->pt->supports_non_stop ()
 546
 547 #define target_async(enable) \
 548   the_target->pt->async (enable)
 549
 550 #define target_process_qsupported(features, count)      \
 551   the_target->pt->process_qsupported (features, count)
 552
 553 #define target_supports_catch_syscall()                 \
 554   (the_target->supports_catch_syscall ?                 \
 555    (*the_target->supports_catch_syscall) () : 0)
 556
 557 #define target_get_ipa_tdesc_idx()                      \
 558   (the_target->get_ipa_tdesc_idx                        \
 559    ? (*the_target->get_ipa_tdesc_idx) () : 0)
 560
 561 #define target_supports_tracepoints()                   \
 562   the_target->pt->supports_tracepoints ()
 563
 564 #define target_supports_fast_tracepoints()              \
 565   the_target->pt->supports_fast_tracepoints ()
 566
 567 #define target_get_min_fast_tracepoint_insn_len()       \
 568   the_target->pt->get_min_fast_tracepoint_insn_len ()
 569
 570 #define target_thread_stopped(thread) \
 571   the_target->pt->thread_stopped (thread)
 572
 573 #define target_pause_all(freeze)                \
 574   the_target->pt->pause_all (freeze)
 575
 576 #define target_unpause_all(unfreeze)            \
 577   the_target->pt->unpause_all (unfreeze)
 578
 579 #define target_stabilize_threads()              \
 580   the_target->pt->stabilize_threads ()
 581
 582 #define target_install_fast_tracepoint_jump_pad(tpoint, tpaddr,         \
 583                                                 collector, lockaddr,    \
 584                                                 orig_size,              \
 585                                                 jump_entry,             \
 586                                                 trampoline, trampoline_size, \
 587                                                 jjump_pad_insn,         \
 588                                                 jjump_pad_insn_size,    \
 589                                                 adjusted_insn_addr,     \
 590                                                 adjusted_insn_addr_end, \
 591                                                 err)                    \
 592   the_target->pt->install_fast_tracepoint_jump_pad (tpoint, tpaddr,     \
 593                                                     collector,lockaddr, \
 594                                                     orig_size, jump_entry, \
 595                                                     trampoline,         \
 596                                                     trampoline_size,    \
 597                                                     jjump_pad_insn,     \
 598                                                     jjump_pad_insn_size, \
 599                                                     adjusted_insn_addr, \
 600                                                     adjusted_insn_addr_end, \
 601                                                     err)
 602
 603 #define target_emit_ops() \
 604   the_target->pt->emit_ops ()
 605
 606 #define target_supports_disable_randomization() \
 607   the_target->pt->supports_disable_randomization ()
 608
 609 #define target_supports_agent() \
 610   the_target->pt->supports_agent ()
 611
 612 static inline struct btrace_target_info *
 613 target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
 614 {
 615   if (the_target->enable_btrace == nullptr)
 616     error (_("Target does not support branch tracing."));
 617
 618   return (*the_target->enable_btrace) (ptid, conf);
 619 }
 620
 621 static inline int
 622 target_disable_btrace (struct btrace_target_info *tinfo)
 623 {
 624   if (the_target->disable_btrace == nullptr)
 625     error (_("Target does not support branch tracing."));
 626
 627   return (*the_target->disable_btrace) (tinfo);
 628 }
 629
 630 static inline int
 631 target_read_btrace (struct btrace_target_info *tinfo,
 632                     struct buffer *buffer,
 633                     enum btrace_read_type type)
 634 {
 635   if (the_target->read_btrace == nullptr)
 636     error (_("Target does not support branch tracing."));
 637
 638   return (*the_target->read_btrace) (tinfo, buffer, type);
 639 }
 640
 641 static inline int
 642 target_read_btrace_conf (struct btrace_target_info *tinfo,
 643                          struct buffer *buffer)
 644 {
 645   if (the_target->read_btrace_conf == nullptr)
 646     error (_("Target does not support branch tracing."));
 647
 648   return (*the_target->read_btrace_conf) (tinfo, buffer);
 649 }
 650
 651 #define target_supports_range_stepping() \
 652   (the_target->supports_range_stepping ? \
 653    (*the_target->supports_range_stepping) () : 0)
 654
 655 #define target_supports_stopped_by_sw_breakpoint() \
 656   the_target->pt->supports_stopped_by_sw_breakpoint ()
 657
 658 #define target_stopped_by_sw_breakpoint() \
 659   the_target->pt->stopped_by_sw_breakpoint ()
 660
 661 #define target_supports_stopped_by_hw_breakpoint() \
 662   the_target->pt->supports_stopped_by_hw_breakpoint ()
 663
 664 #define target_supports_hardware_single_step() \
 665   the_target->pt->supports_hardware_single_step ()
 666
 667 #define target_stopped_by_hw_breakpoint() \
 668   the_target->pt->stopped_by_hw_breakpoint ()
 669
 670 #define target_breakpoint_kind_from_pc(pcptr) \
 671   (the_target->breakpoint_kind_from_pc \
 672    ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
 673    : default_breakpoint_kind_from_pc (pcptr))
 674
 675 #define target_breakpoint_kind_from_current_state(pcptr) \
 676   (the_target->breakpoint_kind_from_current_state \
 677    ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
 678    : target_breakpoint_kind_from_pc (pcptr))
 679
 680 #define target_supports_software_single_step() \
 681   (the_target->supports_software_single_step ? \
 682    (*the_target->supports_software_single_step) () : 0)
 683
 684 ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
 685                int connected_wait);
 686
 687 /* Prepare to read or write memory from the inferior process.  See the
 688    corresponding process_stratum_target methods for more details.  */
 689
 690 int prepare_to_access_memory (void);
 691 void done_accessing_memory (void);
 692
 693 #define target_core_of_thread(ptid)             \
 694   the_target->pt->core_of_thread (ptid)
 695
 696 #define target_thread_name(ptid)                                \
 697   (the_target->thread_name ? (*the_target->thread_name) (ptid)  \
 698    : NULL)
 699
 700 #define target_thread_handle(ptid, handle, handle_len) \
 701    (the_target->thread_handle ? (*the_target->thread_handle) \
 702                                   (ptid, handle, handle_len) \
 703    : false)
 704
 705 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 706
 707 int set_desired_thread ();
 708
 709 const char *target_pid_to_str (ptid_t);
 710
 711 int default_breakpoint_kind_from_pc (CORE_ADDR *pcptr);
 712
 713 #endif /* GDBSERVER_TARGET_H */