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   /* Read Thread Information Block address.  */
  74   int (*get_tib_address) (ptid_t ptid, CORE_ADDR *address);
  75
  76   /* Pause all threads.  If FREEZE, arrange for any resume attempt to
  77      be ignored until an unpause_all call unfreezes threads again.
  78      There can be nested calls to pause_all, so a freeze counter
  79      should be maintained.  */
  80   void (*pause_all) (int freeze);
  81
  82   /* Unpause all threads.  Threads that hadn't been resumed by the
  83      client should be left stopped.  Basically a pause/unpause call
  84      pair should not end up resuming threads that were stopped before
  85      the pause call.  */
  86   void (*unpause_all) (int unfreeze);
  87
  88   /* Stabilize all threads.  That is, force them out of jump pads.  */
  89   void (*stabilize_threads) (void);
  90
  91   /* Install a fast tracepoint jump pad.  TPOINT is the address of the
  92      tracepoint internal object as used by the IPA agent.  TPADDR is
  93      the address of tracepoint.  COLLECTOR is address of the function
  94      the jump pad redirects to.  LOCKADDR is the address of the jump
  95      pad lock object.  ORIG_SIZE is the size in bytes of the
  96      instruction at TPADDR.  JUMP_ENTRY points to the address of the
  97      jump pad entry, and on return holds the address past the end of
  98      the created jump pad.  If a trampoline is created by the function,
  99      then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
 100      the trampoline, else they remain unchanged.  JJUMP_PAD_INSN is a
 101      buffer containing a copy of the instruction at TPADDR.
 102      ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
 103      return the address range where the instruction at TPADDR was relocated
 104      to.  If an error occurs, the ERR may be used to pass on an error
 105      message.  */
 106   int (*install_fast_tracepoint_jump_pad) (CORE_ADDR tpoint, CORE_ADDR tpaddr,
 107                                            CORE_ADDR collector,
 108                                            CORE_ADDR lockaddr,
 109                                            ULONGEST orig_size,
 110                                            CORE_ADDR *jump_entry,
 111                                            CORE_ADDR *trampoline,
 112                                            ULONGEST *trampoline_size,
 113                                            unsigned char *jjump_pad_insn,
 114                                            ULONGEST *jjump_pad_insn_size,
 115                                            CORE_ADDR *adjusted_insn_addr,
 116                                            CORE_ADDR *adjusted_insn_addr_end,
 117                                            char *err);
 118
 119   /* Return the bytecode operations vector for the current inferior.
 120      Returns NULL if bytecode compilation is not supported.  */
 121   struct emit_ops *(*emit_ops) (void);
 122
 123   /* Returns true if the target supports disabling randomization.  */
 124   int (*supports_disable_randomization) (void);
 125
 126   /* Return the minimum length of an instruction that can be safely overwritten
 127      for use as a fast tracepoint.  */
 128   int (*get_min_fast_tracepoint_insn_len) (void);
 129
 130   /* Read solib info on SVR4 platforms.  */
 131   int (*qxfer_libraries_svr4) (const char *annex, unsigned char *readbuf,
 132                                unsigned const char *writebuf,
 133                                CORE_ADDR offset, int len);
 134
 135   /* Return true if target supports debugging agent.  */
 136   int (*supports_agent) (void);
 137
 138   /* Enable branch tracing for PTID based on CONF and allocate a branch trace
 139      target information struct for reading and for disabling branch trace.  */
 140   struct btrace_target_info *(*enable_btrace)
 141     (ptid_t ptid, const struct btrace_config *conf);
 142
 143   /* Disable branch tracing.
 144      Returns zero on success, non-zero otherwise.  */
 145   int (*disable_btrace) (struct btrace_target_info *tinfo);
 146
 147   /* Read branch trace data into buffer.
 148      Return 0 on success; print an error message into BUFFER and return -1,
 149      otherwise.  */
 150   int (*read_btrace) (struct btrace_target_info *, struct buffer *,
 151                       enum btrace_read_type type);
 152
 153   /* Read the branch trace configuration into BUFFER.
 154      Return 0 on success; print an error message into BUFFER and return -1
 155      otherwise.  */
 156   int (*read_btrace_conf) (const struct btrace_target_info *, struct buffer *);
 157
 158   /* Return true if target supports range stepping.  */
 159   int (*supports_range_stepping) (void);
 160
 161   /* Return the full absolute name of the executable file that was
 162      run to create the process PID.  If the executable file cannot
 163      be determined, NULL is returned.  Otherwise, a pointer to a
 164      character string containing the pathname is returned.  This
 165      string should be copied into a buffer by the client if the string
 166      will not be immediately used, or if it must persist.  */
 167   char *(*pid_to_exec_file) (int pid);
 168
 169   /* Multiple-filesystem-aware open.  Like open(2), but operating in
 170      the filesystem as it appears to process PID.  Systems where all
 171      processes share a common filesystem should set this to NULL.
 172      If NULL, the caller should fall back to open(2).  */
 173   int (*multifs_open) (int pid, const char *filename,
 174                        int flags, mode_t mode);
 175
 176   /* Multiple-filesystem-aware unlink.  Like unlink(2), but operates
 177      in the filesystem as it appears to process PID.  Systems where
 178      all processes share a common filesystem should set this to NULL.
 179      If NULL, the caller should fall back to unlink(2).  */
 180   int (*multifs_unlink) (int pid, const char *filename);
 181
 182   /* Multiple-filesystem-aware readlink.  Like readlink(2), but
 183      operating in the filesystem as it appears to process PID.
 184      Systems where all processes share a common filesystem should
 185      set this to NULL.  If NULL, the caller should fall back to
 186      readlink(2).  */
 187   ssize_t (*multifs_readlink) (int pid, const char *filename,
 188                                char *buf, size_t bufsiz);
 189
 190   /* Return the breakpoint kind for this target based on PC.  The PCPTR is
 191      adjusted to the real memory location in case a flag (e.g., the Thumb bit on
 192      ARM) was present in the PC.  */
 193   int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr);
 194
 195   /* Return the software breakpoint from KIND.  KIND can have target
 196      specific meaning like the Z0 kind parameter.
 197      SIZE is set to the software breakpoint's length in memory.  */
 198   const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size);
 199
 200   /* Return the thread's name, or NULL if the target is unable to determine it.
 201      The returned value must not be freed by the caller.  */
 202   const char *(*thread_name) (ptid_t thread);
 203
 204   /* Return the breakpoint kind for this target based on the current
 205      processor state (e.g. the current instruction mode on ARM) and the
 206      PC.  The PCPTR is adjusted to the real memory location in case a flag
 207      (e.g., the Thumb bit on ARM) is present in the PC.  */
 208   int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
 209
 210   /* Returns true if the target can software single step.  */
 211   int (*supports_software_single_step) (void);
 212
 213   /* Return 1 if the target supports catch syscall, 0 (or leave the
 214      callback NULL) otherwise.  */
 215   int (*supports_catch_syscall) (void);
 216
 217   /* Return tdesc index for IPA.  */
 218   int (*get_ipa_tdesc_idx) (void);
 219
 220   /* Thread ID to (numeric) thread handle: Return true on success and
 221      false for failure.  Return pointer to thread handle via HANDLE
 222      and the handle's length via HANDLE_LEN.  */
 223   bool (*thread_handle) (ptid_t ptid, gdb_byte **handle, int *handle_len);
 224
 225   /* The object that will gradually replace this struct.  */
 226   process_target *pt;
 227 };
 228
 229 class process_target
 230 {
 231 public:
 232
 233   virtual ~process_target () = default;
 234
 235   /* Start a new process.
 236
 237      PROGRAM is a path to the program to execute.
 238      PROGRAM_ARGS is a standard NULL-terminated array of arguments,
 239      to be passed to the inferior as ``argv'' (along with PROGRAM).
 240
 241      Returns the new PID on success, -1 on failure.  Registers the new
 242      process with the process list.  */
 243   virtual int create_inferior (const char *program,
 244                                const std::vector<char *> &program_args) = 0;
 245
 246   /* Do additional setup after a new process is created, including
 247      exec-wrapper completion.  */
 248   virtual void post_create_inferior ();
 249
 250   /* Attach to a running process.
 251
 252      PID is the process ID to attach to, specified by the user
 253      or a higher layer.
 254
 255      Returns -1 if attaching is unsupported, 0 on success, and calls
 256      error() otherwise.  */
 257   virtual int attach (unsigned long pid) = 0;
 258
 259   /* Kill process PROC.  Return -1 on failure, and 0 on success.  */
 260   virtual int kill (process_info *proc) = 0;
 261
 262   /* Detach from process PROC.  Return -1 on failure, and 0 on
 263      success.  */
 264   virtual int detach (process_info *proc) = 0;
 265
 266   /* The inferior process has died.  Do what is right.  */
 267   virtual void mourn (process_info *proc) = 0;
 268
 269   /* Wait for process PID to exit.  */
 270   virtual void join (int pid) = 0;
 271
 272   /* Return true iff the thread with process ID PID is alive.  */
 273   virtual bool thread_alive (ptid_t pid) = 0;
 274
 275   /* Resume the inferior process.  */
 276   virtual void resume (thread_resume *resume_info, size_t n) = 0;
 277
 278   /* Wait for the inferior process or thread to change state.  Store
 279      status through argument pointer STATUS.
 280
 281      PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
 282      wait for any thread of process pid to do something.  Return ptid
 283      of child, or -1 in case of error; store status through argument
 284      pointer STATUS.  OPTIONS is a bit set of options defined as
 285      TARGET_W* above.  If options contains TARGET_WNOHANG and there's
 286      no child stop to report, return is
 287      null_ptid/TARGET_WAITKIND_IGNORE.  */
 288   virtual ptid_t wait (ptid_t ptid, target_waitstatus *status,
 289                        int options) = 0;
 290
 291   /* Fetch registers from the inferior process.
 292
 293      If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO.  */
 294   virtual void fetch_registers (regcache *regcache, int regno) = 0;
 295
 296   /* Store registers to the inferior process.
 297
 298      If REGNO is -1, store all registers; otherwise, store at least REGNO.  */
 299   virtual void store_registers (regcache *regcache, int regno) = 0;
 300
 301   /* Prepare to read or write memory from the inferior process.
 302      Targets use this to do what is necessary to get the state of the
 303      inferior such that it is possible to access memory.
 304
 305      This should generally only be called from client facing routines,
 306      such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
 307      insertion routine.
 308
 309      Like `read_memory' and `write_memory' below, returns 0 on success
 310      and errno on failure.  */
 311   virtual int prepare_to_access_memory ();
 312
 313   /* Undo the effects of prepare_to_access_memory.  */
 314   virtual void done_accessing_memory ();
 315
 316   /* Read memory from the inferior process.  This should generally be
 317      called through read_inferior_memory, which handles breakpoint shadowing.
 318
 319      Read LEN bytes at MEMADDR into a buffer at MYADDR.
 320
 321      Returns 0 on success and errno on failure.  */
 322   virtual int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
 323                            int len) = 0;
 324
 325   /* Write memory to the inferior process.  This should generally be
 326      called through target_write_memory, which handles breakpoint shadowing.
 327
 328      Write LEN bytes from the buffer at MYADDR to MEMADDR.
 329
 330      Returns 0 on success and errno on failure.  */
 331   virtual int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
 332                             int len) = 0;
 333
 334   /* Query GDB for the values of any symbols we're interested in.
 335      This function is called whenever we receive a "qSymbols::"
 336      query, which corresponds to every time more symbols (might)
 337      become available.  */
 338   virtual void look_up_symbols ();
 339
 340   /* Send an interrupt request to the inferior process,
 341      however is appropriate.  */
 342   virtual void request_interrupt () = 0;
 343
 344   /* Return true if the read_auxv target op is supported.  */
 345   virtual bool supports_read_auxv ();
 346
 347   /* Read auxiliary vector data from the inferior process.
 348
 349      Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 350   virtual int read_auxv (CORE_ADDR offset, unsigned char *myaddr,
 351                          unsigned int len);
 352
 353   /* Returns true if GDB Z breakpoint type TYPE is supported, false
 354      otherwise.  The type is coded as follows:
 355        '0' - software-breakpoint
 356        '1' - hardware-breakpoint
 357        '2' - write watchpoint
 358        '3' - read watchpoint
 359        '4' - access watchpoint
 360   */
 361   virtual bool supports_z_point_type (char z_type);
 362
 363   /* Insert and remove a break or watchpoint.
 364      Returns 0 on success, -1 on failure and 1 on unsupported.  */
 365   virtual int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
 366                             int size, raw_breakpoint *bp);
 367
 368   virtual int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
 369                             int size, raw_breakpoint *bp);
 370
 371   /* Returns true if the target stopped because it executed a software
 372      breakpoint instruction, false otherwise.  */
 373   virtual bool stopped_by_sw_breakpoint ();
 374
 375   /* Returns true if the target knows whether a trap was caused by a
 376      SW breakpoint triggering.  */
 377   virtual bool supports_stopped_by_sw_breakpoint ();
 378
 379   /* Returns true if the target stopped for a hardware breakpoint.  */
 380   virtual bool stopped_by_hw_breakpoint ();
 381
 382   /* Returns true if the target knows whether a trap was caused by a
 383      HW breakpoint triggering.  */
 384   virtual bool supports_stopped_by_hw_breakpoint ();
 385
 386   /* Returns true if the target can do hardware single step.  */
 387   virtual bool supports_hardware_single_step ();
 388
 389   /* Returns true if target was stopped due to a watchpoint hit, false
 390      otherwise.  */
 391   virtual bool stopped_by_watchpoint ();
 392
 393   /* Returns the address associated with the watchpoint that hit, if any;
 394      returns 0 otherwise.  */
 395   virtual CORE_ADDR stopped_data_address ();
 396
 397   /* Return true if the read_offsets target op is supported.  */
 398   virtual bool supports_read_offsets ();
 399
 400   /* Reports the text, data offsets of the executable.  This is
 401      needed for uclinux where the executable is relocated during load
 402      time.  */
 403   virtual int read_offsets (CORE_ADDR *text, CORE_ADDR *data);
 404
 405   /* Return true if the get_tls_address target op is supported.  */
 406   virtual bool supports_get_tls_address ();
 407
 408   /* Fetch the address associated with a specific thread local storage
 409      area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
 410      Stores it in *ADDRESS and returns zero on success; otherwise returns
 411      an error code.  A return value of -1 means this system does not
 412      support the operation.  */
 413   virtual int get_tls_address (thread_info *thread, CORE_ADDR offset,
 414                                CORE_ADDR load_module, CORE_ADDR *address);
 415
 416   /* Fill BUF with an hostio error packet representing the last hostio
 417      error.  */
 418   virtual void hostio_last_error (char *buf);
 419
 420   /* Return true if the qxfer_osdata target op is supported.  */
 421   virtual bool supports_qxfer_osdata ();
 422
 423   /* Read/Write OS data using qXfer packets.  */
 424   virtual int qxfer_osdata (const char *annex, unsigned char *readbuf,
 425                             unsigned const char *writebuf,
 426                             CORE_ADDR offset, int len);
 427
 428   /* Return true if the qxfer_siginfo target op is supported.  */
 429   virtual bool supports_qxfer_siginfo ();
 430
 431   /* Read/Write extra signal info.  */
 432   virtual int qxfer_siginfo (const char *annex, unsigned char *readbuf,
 433                              unsigned const char *writebuf,
 434                              CORE_ADDR offset, int len);
 435
 436   /* Return true if non-stop mode is supported.  */
 437   virtual bool supports_non_stop ();
 438
 439   /* Enables async target events.  Returns the previous enable
 440      state.  */
 441   virtual bool async (bool enable);
 442
 443   /* Switch to non-stop (ENABLE == true) or all-stop (ENABLE == false)
 444      mode.  Return 0 on success, -1 otherwise.  */
 445   virtual int start_non_stop (bool enable);
 446
 447   /* Returns true if the target supports multi-process debugging.  */
 448   virtual bool supports_multi_process ();
 449
 450   /* Returns true if fork events are supported.  */
 451   virtual bool supports_fork_events ();
 452
 453   /* Returns true if vfork events are supported.  */
 454   virtual bool supports_vfork_events ();
 455
 456   /* Returns true if exec events are supported.  */
 457   virtual bool supports_exec_events ();
 458
 459   /* Allows target to re-initialize connection-specific settings.  */
 460   virtual void handle_new_gdb_connection ();
 461
 462   /* The target-specific routine to process monitor command.
 463      Returns 1 if handled, or 0 to perform default processing.  */
 464   virtual int handle_monitor_command (char *mon);
 465
 466   /* Returns the core given a thread, or -1 if not known.  */
 467   virtual int core_of_thread (ptid_t ptid);
 468
 469   /* Returns true if the read_loadmap target op is supported.  */
 470   virtual bool supports_read_loadmap ();
 471
 472   /* Read loadmaps.  Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 473   virtual int read_loadmap (const char *annex, CORE_ADDR offset,
 474                             unsigned char *myaddr, unsigned int len);
 475
 476   /* Target specific qSupported support.  FEATURES is an array of
 477      features with COUNT elements.  */
 478   virtual void process_qsupported (char **features, int count);
 479
 480   /* Return true if the target supports tracepoints, false otherwise.  */
 481   virtual bool supports_tracepoints ();
 482
 483   /* Read PC from REGCACHE.  */
 484   virtual CORE_ADDR read_pc (regcache *regcache);
 485
 486   /* Write PC to REGCACHE.  */
 487   virtual void write_pc (regcache *regcache, CORE_ADDR pc);
 488
 489   /* Return true if the thread_stopped op is supported.  */
 490   virtual bool supports_thread_stopped ();
 491
 492   /* Return true if THREAD is known to be stopped now.  */
 493   virtual bool thread_stopped (thread_info *thread);
 494 };
 495
 496 extern process_stratum_target *the_target;
 497
 498 void set_target_ops (process_stratum_target *);
 499
 500 #define target_create_inferior(program, program_args)   \
 501   the_target->pt->create_inferior (program, program_args)
 502
 503 #define target_post_create_inferior()                    \
 504   the_target->pt->post_create_inferior ()
 505
 506 #define myattach(pid) \
 507   the_target->pt->attach (pid)
 508
 509 int kill_inferior (process_info *proc);
 510
 511 #define target_supports_fork_events() \
 512   the_target->pt->supports_fork_events ()
 513
 514 #define target_supports_vfork_events() \
 515   the_target->pt->supports_vfork_events ()
 516
 517 #define target_supports_exec_events() \
 518   the_target->pt->supports_exec_events ()
 519
 520 #define target_handle_new_gdb_connection()               \
 521   the_target->pt->handle_new_gdb_connection ()
 522
 523 #define detach_inferior(proc) \
 524   the_target->pt->detach (proc)
 525
 526 #define mythread_alive(pid) \
 527   the_target->pt->thread_alive (pid)
 528
 529 #define fetch_inferior_registers(regcache, regno)       \
 530   the_target->pt->fetch_registers (regcache, regno)
 531
 532 #define store_inferior_registers(regcache, regno) \
 533   the_target->pt->store_registers (regcache, regno)
 534
 535 #define join_inferior(pid) \
 536   the_target->pt->join (pid)
 537
 538 #define target_supports_non_stop() \
 539   the_target->pt->supports_non_stop ()
 540
 541 #define target_async(enable) \
 542   the_target->pt->async (enable)
 543
 544 #define target_process_qsupported(features, count)      \
 545   the_target->pt->process_qsupported (features, count)
 546
 547 #define target_supports_catch_syscall()                 \
 548   (the_target->supports_catch_syscall ?                 \
 549    (*the_target->supports_catch_syscall) () : 0)
 550
 551 #define target_get_ipa_tdesc_idx()                      \
 552   (the_target->get_ipa_tdesc_idx                        \
 553    ? (*the_target->get_ipa_tdesc_idx) () : 0)
 554
 555 #define target_supports_tracepoints()                   \
 556   the_target->pt->supports_tracepoints ()
 557
 558 #define target_supports_fast_tracepoints()              \
 559   (the_target->install_fast_tracepoint_jump_pad != NULL)
 560
 561 #define target_get_min_fast_tracepoint_insn_len()       \
 562   (the_target->get_min_fast_tracepoint_insn_len         \
 563    ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
 564
 565 #define target_thread_stopped(thread) \
 566   the_target->pt->thread_stopped (thread)
 567
 568 #define pause_all(freeze)                       \
 569   do                                            \
 570     {                                           \
 571       if (the_target->pause_all)                \
 572         (*the_target->pause_all) (freeze);      \
 573     } while (0)
 574
 575 #define unpause_all(unfreeze)                   \
 576   do                                            \
 577     {                                           \
 578       if (the_target->unpause_all)              \
 579         (*the_target->unpause_all) (unfreeze);  \
 580     } while (0)
 581
 582 #define stabilize_threads()                     \
 583   do                                            \
 584     {                                           \
 585       if (the_target->stabilize_threads)        \
 586         (*the_target->stabilize_threads) ();    \
 587     } while (0)
 588
 589 #define install_fast_tracepoint_jump_pad(tpoint, tpaddr,                \
 590                                          collector, lockaddr,           \
 591                                          orig_size,                     \
 592                                          jump_entry,                    \
 593                                          trampoline, trampoline_size,   \
 594                                          jjump_pad_insn,                \
 595                                          jjump_pad_insn_size,           \
 596                                          adjusted_insn_addr,            \
 597                                          adjusted_insn_addr_end,        \
 598                                          err)                           \
 599   (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr,      \
 600                                                    collector,lockaddr,  \
 601                                                    orig_size, jump_entry, \
 602                                                    trampoline,          \
 603                                                    trampoline_size,     \
 604                                                    jjump_pad_insn,      \
 605                                                    jjump_pad_insn_size, \
 606                                                    adjusted_insn_addr,  \
 607                                                    adjusted_insn_addr_end, \
 608                                                    err)
 609
 610 #define target_emit_ops() \
 611   (the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
 612
 613 #define target_supports_disable_randomization() \
 614   (the_target->supports_disable_randomization ? \
 615    (*the_target->supports_disable_randomization) () : 0)
 616
 617 #define target_supports_agent() \
 618   (the_target->supports_agent ? \
 619    (*the_target->supports_agent) () : 0)
 620
 621 static inline struct btrace_target_info *
 622 target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
 623 {
 624   if (the_target->enable_btrace == nullptr)
 625     error (_("Target does not support branch tracing."));
 626
 627   return (*the_target->enable_btrace) (ptid, conf);
 628 }
 629
 630 static inline int
 631 target_disable_btrace (struct btrace_target_info *tinfo)
 632 {
 633   if (the_target->disable_btrace == nullptr)
 634     error (_("Target does not support branch tracing."));
 635
 636   return (*the_target->disable_btrace) (tinfo);
 637 }
 638
 639 static inline int
 640 target_read_btrace (struct btrace_target_info *tinfo,
 641                     struct buffer *buffer,
 642                     enum btrace_read_type type)
 643 {
 644   if (the_target->read_btrace == nullptr)
 645     error (_("Target does not support branch tracing."));
 646
 647   return (*the_target->read_btrace) (tinfo, buffer, type);
 648 }
 649
 650 static inline int
 651 target_read_btrace_conf (struct btrace_target_info *tinfo,
 652                          struct buffer *buffer)
 653 {
 654   if (the_target->read_btrace_conf == nullptr)
 655     error (_("Target does not support branch tracing."));
 656
 657   return (*the_target->read_btrace_conf) (tinfo, buffer);
 658 }
 659
 660 #define target_supports_range_stepping() \
 661   (the_target->supports_range_stepping ? \
 662    (*the_target->supports_range_stepping) () : 0)
 663
 664 #define target_supports_stopped_by_sw_breakpoint() \
 665   the_target->pt->supports_stopped_by_sw_breakpoint ()
 666
 667 #define target_stopped_by_sw_breakpoint() \
 668   the_target->pt->stopped_by_sw_breakpoint ()
 669
 670 #define target_supports_stopped_by_hw_breakpoint() \
 671   the_target->pt->supports_stopped_by_hw_breakpoint ()
 672
 673 #define target_supports_hardware_single_step() \
 674   the_target->pt->supports_hardware_single_step ()
 675
 676 #define target_stopped_by_hw_breakpoint() \
 677   the_target->pt->stopped_by_hw_breakpoint ()
 678
 679 #define target_breakpoint_kind_from_pc(pcptr) \
 680   (the_target->breakpoint_kind_from_pc \
 681    ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
 682    : default_breakpoint_kind_from_pc (pcptr))
 683
 684 #define target_breakpoint_kind_from_current_state(pcptr) \
 685   (the_target->breakpoint_kind_from_current_state \
 686    ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
 687    : target_breakpoint_kind_from_pc (pcptr))
 688
 689 #define target_supports_software_single_step() \
 690   (the_target->supports_software_single_step ? \
 691    (*the_target->supports_software_single_step) () : 0)
 692
 693 ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
 694                int connected_wait);
 695
 696 /* Prepare to read or write memory from the inferior process.  See the
 697    corresponding process_stratum_target methods for more details.  */
 698
 699 int prepare_to_access_memory (void);
 700 void done_accessing_memory (void);
 701
 702 #define target_core_of_thread(ptid)             \
 703   the_target->pt->core_of_thread (ptid)
 704
 705 #define target_thread_name(ptid)                                \
 706   (the_target->thread_name ? (*the_target->thread_name) (ptid)  \
 707    : NULL)
 708
 709 #define target_thread_handle(ptid, handle, handle_len) \
 710    (the_target->thread_handle ? (*the_target->thread_handle) \
 711                                   (ptid, handle, handle_len) \
 712    : false)
 713
 714 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 715
 716 int set_desired_thread ();
 717
 718 const char *target_pid_to_str (ptid_t);
 719
 720 int default_breakpoint_kind_from_pc (CORE_ADDR *pcptr);
 721
 722 #endif /* GDBSERVER_TARGET_H */