gdbserver/target.h

   1 /* Target operations for the remote server for GDB.
   2    Copyright (C) 2002-2020 Free Software Foundation, Inc.
   3
   4    Contributed by MontaVista Software.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GDBSERVER_TARGET_H
  22 #define GDBSERVER_TARGET_H
  23
  24 #include <sys/types.h> /* for mode_t */
  25 #include "target/target.h"
  26 #include "target/resume.h"
  27 #include "target/wait.h"
  28 #include "target/waitstatus.h"
  29 #include "mem-break.h"
  30 #include "gdbsupport/btrace-common.h"
  31 #include <vector>
  32
  33 struct emit_ops;
  34 struct buffer;
  35 struct process_info;
  36
  37 /* This structure describes how to resume a particular thread (or all
  38    threads) based on the client's request.  If thread is -1, then this
  39    entry applies to all threads.  These are passed around as an
  40    array.  */
  41
  42 struct thread_resume
  43 {
  44   ptid_t thread;
  45
  46   /* How to "resume".  */
  47   enum resume_kind kind;
  48
  49   /* If non-zero, send this signal when we resume, or to stop the
  50      thread.  If stopping a thread, and this is 0, the target should
  51      stop the thread however it best decides to (e.g., SIGSTOP on
  52      linux; SuspendThread on win32).  This is a host signal value (not
  53      enum gdb_signal).  */
  54   int sig;
  55
  56   /* Range to single step within.  Valid only iff KIND is resume_step.
  57
  58      Single-step once, and then continuing stepping as long as the
  59      thread stops in this range.  (If the range is empty
  60      [STEP_RANGE_START == STEP_RANGE_END], then this is a single-step
  61      request.)  */
  62   CORE_ADDR step_range_start;   /* Inclusive */
  63   CORE_ADDR step_range_end;     /* Exclusive */
  64 };
  65
  66 class process_target;
  67
  68 /* GDBserver doesn't have a concept of strata like GDB, but we call
  69    its target vector "process_stratum" anyway for the benefit of
  70    shared code.  */
  71 struct process_stratum_target
  72 {
  73   /* Return true if target supports debugging agent.  */
  74   int (*supports_agent) (void);
  75
  76   /* Enable branch tracing for PTID based on CONF and allocate a branch trace
  77      target information struct for reading and for disabling branch trace.  */
  78   struct btrace_target_info *(*enable_btrace)
  79     (ptid_t ptid, const struct btrace_config *conf);
  80
  81   /* Disable branch tracing.
  82      Returns zero on success, non-zero otherwise.  */
  83   int (*disable_btrace) (struct btrace_target_info *tinfo);
  84
  85   /* Read branch trace data into buffer.
  86      Return 0 on success; print an error message into BUFFER and return -1,
  87      otherwise.  */
  88   int (*read_btrace) (struct btrace_target_info *, struct buffer *,
  89                       enum btrace_read_type type);
  90
  91   /* Read the branch trace configuration into BUFFER.
  92      Return 0 on success; print an error message into BUFFER and return -1
  93      otherwise.  */
  94   int (*read_btrace_conf) (const struct btrace_target_info *, struct buffer *);
  95
  96   /* Return true if target supports range stepping.  */
  97   int (*supports_range_stepping) (void);
  98
  99   /* Return the full absolute name of the executable file that was
 100      run to create the process PID.  If the executable file cannot
 101      be determined, NULL is returned.  Otherwise, a pointer to a
 102      character string containing the pathname is returned.  This
 103      string should be copied into a buffer by the client if the string
 104      will not be immediately used, or if it must persist.  */
 105   char *(*pid_to_exec_file) (int pid);
 106
 107   /* Multiple-filesystem-aware open.  Like open(2), but operating in
 108      the filesystem as it appears to process PID.  Systems where all
 109      processes share a common filesystem should set this to NULL.
 110      If NULL, the caller should fall back to open(2).  */
 111   int (*multifs_open) (int pid, const char *filename,
 112                        int flags, mode_t mode);
 113
 114   /* Multiple-filesystem-aware unlink.  Like unlink(2), but operates
 115      in the filesystem as it appears to process PID.  Systems where
 116      all processes share a common filesystem should set this to NULL.
 117      If NULL, the caller should fall back to unlink(2).  */
 118   int (*multifs_unlink) (int pid, const char *filename);
 119
 120   /* Multiple-filesystem-aware readlink.  Like readlink(2), but
 121      operating in the filesystem as it appears to process PID.
 122      Systems where all processes share a common filesystem should
 123      set this to NULL.  If NULL, the caller should fall back to
 124      readlink(2).  */
 125   ssize_t (*multifs_readlink) (int pid, const char *filename,
 126                                char *buf, size_t bufsiz);
 127
 128   /* Return the breakpoint kind for this target based on PC.  The PCPTR is
 129      adjusted to the real memory location in case a flag (e.g., the Thumb bit on
 130      ARM) was present in the PC.  */
 131   int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr);
 132
 133   /* Return the software breakpoint from KIND.  KIND can have target
 134      specific meaning like the Z0 kind parameter.
 135      SIZE is set to the software breakpoint's length in memory.  */
 136   const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size);
 137
 138   /* Return the thread's name, or NULL if the target is unable to determine it.
 139      The returned value must not be freed by the caller.  */
 140   const char *(*thread_name) (ptid_t thread);
 141
 142   /* Return the breakpoint kind for this target based on the current
 143      processor state (e.g. the current instruction mode on ARM) and the
 144      PC.  The PCPTR is adjusted to the real memory location in case a flag
 145      (e.g., the Thumb bit on ARM) is present in the PC.  */
 146   int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
 147
 148   /* Returns true if the target can software single step.  */
 149   int (*supports_software_single_step) (void);
 150
 151   /* Return 1 if the target supports catch syscall, 0 (or leave the
 152      callback NULL) otherwise.  */
 153   int (*supports_catch_syscall) (void);
 154
 155   /* Return tdesc index for IPA.  */
 156   int (*get_ipa_tdesc_idx) (void);
 157
 158   /* Thread ID to (numeric) thread handle: Return true on success and
 159      false for failure.  Return pointer to thread handle via HANDLE
 160      and the handle's length via HANDLE_LEN.  */
 161   bool (*thread_handle) (ptid_t ptid, gdb_byte **handle, int *handle_len);
 162
 163   /* The object that will gradually replace this struct.  */
 164   process_target *pt;
 165 };
 166
 167 class process_target
 168 {
 169 public:
 170
 171   virtual ~process_target () = default;
 172
 173   /* Start a new process.
 174
 175      PROGRAM is a path to the program to execute.
 176      PROGRAM_ARGS is a standard NULL-terminated array of arguments,
 177      to be passed to the inferior as ``argv'' (along with PROGRAM).
 178
 179      Returns the new PID on success, -1 on failure.  Registers the new
 180      process with the process list.  */
 181   virtual int create_inferior (const char *program,
 182                                const std::vector<char *> &program_args) = 0;
 183
 184   /* Do additional setup after a new process is created, including
 185      exec-wrapper completion.  */
 186   virtual void post_create_inferior ();
 187
 188   /* Attach to a running process.
 189
 190      PID is the process ID to attach to, specified by the user
 191      or a higher layer.
 192
 193      Returns -1 if attaching is unsupported, 0 on success, and calls
 194      error() otherwise.  */
 195   virtual int attach (unsigned long pid) = 0;
 196
 197   /* Kill process PROC.  Return -1 on failure, and 0 on success.  */
 198   virtual int kill (process_info *proc) = 0;
 199
 200   /* Detach from process PROC.  Return -1 on failure, and 0 on
 201      success.  */
 202   virtual int detach (process_info *proc) = 0;
 203
 204   /* The inferior process has died.  Do what is right.  */
 205   virtual void mourn (process_info *proc) = 0;
 206
 207   /* Wait for process PID to exit.  */
 208   virtual void join (int pid) = 0;
 209
 210   /* Return true iff the thread with process ID PID is alive.  */
 211   virtual bool thread_alive (ptid_t pid) = 0;
 212
 213   /* Resume the inferior process.  */
 214   virtual void resume (thread_resume *resume_info, size_t n) = 0;
 215
 216   /* Wait for the inferior process or thread to change state.  Store
 217      status through argument pointer STATUS.
 218
 219      PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
 220      wait for any thread of process pid to do something.  Return ptid
 221      of child, or -1 in case of error; store status through argument
 222      pointer STATUS.  OPTIONS is a bit set of options defined as
 223      TARGET_W* above.  If options contains TARGET_WNOHANG and there's
 224      no child stop to report, return is
 225      null_ptid/TARGET_WAITKIND_IGNORE.  */
 226   virtual ptid_t wait (ptid_t ptid, target_waitstatus *status,
 227                        int options) = 0;
 228
 229   /* Fetch registers from the inferior process.
 230
 231      If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO.  */
 232   virtual void fetch_registers (regcache *regcache, int regno) = 0;
 233
 234   /* Store registers to the inferior process.
 235
 236      If REGNO is -1, store all registers; otherwise, store at least REGNO.  */
 237   virtual void store_registers (regcache *regcache, int regno) = 0;
 238
 239   /* Prepare to read or write memory from the inferior process.
 240      Targets use this to do what is necessary to get the state of the
 241      inferior such that it is possible to access memory.
 242
 243      This should generally only be called from client facing routines,
 244      such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
 245      insertion routine.
 246
 247      Like `read_memory' and `write_memory' below, returns 0 on success
 248      and errno on failure.  */
 249   virtual int prepare_to_access_memory ();
 250
 251   /* Undo the effects of prepare_to_access_memory.  */
 252   virtual void done_accessing_memory ();
 253
 254   /* Read memory from the inferior process.  This should generally be
 255      called through read_inferior_memory, which handles breakpoint shadowing.
 256
 257      Read LEN bytes at MEMADDR into a buffer at MYADDR.
 258
 259      Returns 0 on success and errno on failure.  */
 260   virtual int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
 261                            int len) = 0;
 262
 263   /* Write memory to the inferior process.  This should generally be
 264      called through target_write_memory, which handles breakpoint shadowing.
 265
 266      Write LEN bytes from the buffer at MYADDR to MEMADDR.
 267
 268      Returns 0 on success and errno on failure.  */
 269   virtual int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
 270                             int len) = 0;
 271
 272   /* Query GDB for the values of any symbols we're interested in.
 273      This function is called whenever we receive a "qSymbols::"
 274      query, which corresponds to every time more symbols (might)
 275      become available.  */
 276   virtual void look_up_symbols ();
 277
 278   /* Send an interrupt request to the inferior process,
 279      however is appropriate.  */
 280   virtual void request_interrupt () = 0;
 281
 282   /* Return true if the read_auxv target op is supported.  */
 283   virtual bool supports_read_auxv ();
 284
 285   /* Read auxiliary vector data from the inferior process.
 286
 287      Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 288   virtual int read_auxv (CORE_ADDR offset, unsigned char *myaddr,
 289                          unsigned int len);
 290
 291   /* Returns true if GDB Z breakpoint type TYPE is supported, false
 292      otherwise.  The type is coded as follows:
 293        '0' - software-breakpoint
 294        '1' - hardware-breakpoint
 295        '2' - write watchpoint
 296        '3' - read watchpoint
 297        '4' - access watchpoint
 298   */
 299   virtual bool supports_z_point_type (char z_type);
 300
 301   /* Insert and remove a break or watchpoint.
 302      Returns 0 on success, -1 on failure and 1 on unsupported.  */
 303   virtual int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
 304                             int size, raw_breakpoint *bp);
 305
 306   virtual int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
 307                             int size, raw_breakpoint *bp);
 308
 309   /* Returns true if the target stopped because it executed a software
 310      breakpoint instruction, false otherwise.  */
 311   virtual bool stopped_by_sw_breakpoint ();
 312
 313   /* Returns true if the target knows whether a trap was caused by a
 314      SW breakpoint triggering.  */
 315   virtual bool supports_stopped_by_sw_breakpoint ();
 316
 317   /* Returns true if the target stopped for a hardware breakpoint.  */
 318   virtual bool stopped_by_hw_breakpoint ();
 319
 320   /* Returns true if the target knows whether a trap was caused by a
 321      HW breakpoint triggering.  */
 322   virtual bool supports_stopped_by_hw_breakpoint ();
 323
 324   /* Returns true if the target can do hardware single step.  */
 325   virtual bool supports_hardware_single_step ();
 326
 327   /* Returns true if target was stopped due to a watchpoint hit, false
 328      otherwise.  */
 329   virtual bool stopped_by_watchpoint ();
 330
 331   /* Returns the address associated with the watchpoint that hit, if any;
 332      returns 0 otherwise.  */
 333   virtual CORE_ADDR stopped_data_address ();
 334
 335   /* Return true if the read_offsets target op is supported.  */
 336   virtual bool supports_read_offsets ();
 337
 338   /* Reports the text, data offsets of the executable.  This is
 339      needed for uclinux where the executable is relocated during load
 340      time.  */
 341   virtual int read_offsets (CORE_ADDR *text, CORE_ADDR *data);
 342
 343   /* Return true if the get_tls_address target op is supported.  */
 344   virtual bool supports_get_tls_address ();
 345
 346   /* Fetch the address associated with a specific thread local storage
 347      area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
 348      Stores it in *ADDRESS and returns zero on success; otherwise returns
 349      an error code.  A return value of -1 means this system does not
 350      support the operation.  */
 351   virtual int get_tls_address (thread_info *thread, CORE_ADDR offset,
 352                                CORE_ADDR load_module, CORE_ADDR *address);
 353
 354   /* Fill BUF with an hostio error packet representing the last hostio
 355      error.  */
 356   virtual void hostio_last_error (char *buf);
 357
 358   /* Return true if the qxfer_osdata target op is supported.  */
 359   virtual bool supports_qxfer_osdata ();
 360
 361   /* Read/Write OS data using qXfer packets.  */
 362   virtual int qxfer_osdata (const char *annex, unsigned char *readbuf,
 363                             unsigned const char *writebuf,
 364                             CORE_ADDR offset, int len);
 365
 366   /* Return true if the qxfer_siginfo target op is supported.  */
 367   virtual bool supports_qxfer_siginfo ();
 368
 369   /* Read/Write extra signal info.  */
 370   virtual int qxfer_siginfo (const char *annex, unsigned char *readbuf,
 371                              unsigned const char *writebuf,
 372                              CORE_ADDR offset, int len);
 373
 374   /* Return true if non-stop mode is supported.  */
 375   virtual bool supports_non_stop ();
 376
 377   /* Enables async target events.  Returns the previous enable
 378      state.  */
 379   virtual bool async (bool enable);
 380
 381   /* Switch to non-stop (ENABLE == true) or all-stop (ENABLE == false)
 382      mode.  Return 0 on success, -1 otherwise.  */
 383   virtual int start_non_stop (bool enable);
 384
 385   /* Returns true if the target supports multi-process debugging.  */
 386   virtual bool supports_multi_process ();
 387
 388   /* Returns true if fork events are supported.  */
 389   virtual bool supports_fork_events ();
 390
 391   /* Returns true if vfork events are supported.  */
 392   virtual bool supports_vfork_events ();
 393
 394   /* Returns true if exec events are supported.  */
 395   virtual bool supports_exec_events ();
 396
 397   /* Allows target to re-initialize connection-specific settings.  */
 398   virtual void handle_new_gdb_connection ();
 399
 400   /* The target-specific routine to process monitor command.
 401      Returns 1 if handled, or 0 to perform default processing.  */
 402   virtual int handle_monitor_command (char *mon);
 403
 404   /* Returns the core given a thread, or -1 if not known.  */
 405   virtual int core_of_thread (ptid_t ptid);
 406
 407   /* Returns true if the read_loadmap target op is supported.  */
 408   virtual bool supports_read_loadmap ();
 409
 410   /* Read loadmaps.  Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 411   virtual int read_loadmap (const char *annex, CORE_ADDR offset,
 412                             unsigned char *myaddr, unsigned int len);
 413
 414   /* Target specific qSupported support.  FEATURES is an array of
 415      features with COUNT elements.  */
 416   virtual void process_qsupported (char **features, int count);
 417
 418   /* Return true if the target supports tracepoints, false otherwise.  */
 419   virtual bool supports_tracepoints ();
 420
 421   /* Read PC from REGCACHE.  */
 422   virtual CORE_ADDR read_pc (regcache *regcache);
 423
 424   /* Write PC to REGCACHE.  */
 425   virtual void write_pc (regcache *regcache, CORE_ADDR pc);
 426
 427   /* Return true if the thread_stopped op is supported.  */
 428   virtual bool supports_thread_stopped ();
 429
 430   /* Return true if THREAD is known to be stopped now.  */
 431   virtual bool thread_stopped (thread_info *thread);
 432
 433   /* Return true if the get_tib_address op is supported.  */
 434   virtual bool supports_get_tib_address ();
 435
 436   /* Read Thread Information Block address.  */
 437   virtual int get_tib_address (ptid_t ptid, CORE_ADDR *address);
 438
 439   /* Pause all threads.  If FREEZE, arrange for any resume attempt to
 440      be ignored until an unpause_all call unfreezes threads again.
 441      There can be nested calls to pause_all, so a freeze counter
 442      should be maintained.  */
 443   virtual void pause_all (bool freeze);
 444
 445   /* Unpause all threads.  Threads that hadn't been resumed by the
 446      client should be left stopped.  Basically a pause/unpause call
 447      pair should not end up resuming threads that were stopped before
 448      the pause call.  */
 449   virtual void unpause_all (bool unfreeze);
 450
 451   /* Stabilize all threads.  That is, force them out of jump pads.  */
 452   virtual void stabilize_threads ();
 453
 454   /* Return true if the install_fast_tracepoint_jump_pad op is
 455      supported.  */
 456   virtual bool supports_fast_tracepoints ();
 457
 458   /* Install a fast tracepoint jump pad.  TPOINT is the address of the
 459      tracepoint internal object as used by the IPA agent.  TPADDR is
 460      the address of tracepoint.  COLLECTOR is address of the function
 461      the jump pad redirects to.  LOCKADDR is the address of the jump
 462      pad lock object.  ORIG_SIZE is the size in bytes of the
 463      instruction at TPADDR.  JUMP_ENTRY points to the address of the
 464      jump pad entry, and on return holds the address past the end of
 465      the created jump pad.  If a trampoline is created by the function,
 466      then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
 467      the trampoline, else they remain unchanged.  JJUMP_PAD_INSN is a
 468      buffer containing a copy of the instruction at TPADDR.
 469      ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
 470      return the address range where the instruction at TPADDR was relocated
 471      to.  If an error occurs, the ERR may be used to pass on an error
 472      message.  */
 473   virtual int install_fast_tracepoint_jump_pad
 474     (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
 475      CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
 476      CORE_ADDR *trampoline, ULONGEST *trampoline_size,
 477      unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
 478      CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
 479      char *err);
 480
 481   /* Return the minimum length of an instruction that can be safely
 482      overwritten for use as a fast tracepoint.  */
 483   virtual int get_min_fast_tracepoint_insn_len ();
 484
 485   /* Return the bytecode operations vector for the current inferior.
 486      Returns nullptr if bytecode compilation is not supported.  */
 487   virtual struct emit_ops *emit_ops ();
 488
 489   /* Returns true if the target supports disabling randomization.  */
 490   virtual bool supports_disable_randomization ();
 491
 492   /* Return true if the qxfer_libraries_svr4 op is supported.  */
 493   virtual bool supports_qxfer_libraries_svr4 ();
 494
 495   /* Read solib info on SVR4 platforms.  */
 496   virtual int qxfer_libraries_svr4 (const char *annex,
 497                                     unsigned char *readbuf,
 498                                     unsigned const char *writebuf,
 499                                     CORE_ADDR offset, int len);
 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->supports_agent ? \
 611    (*the_target->supports_agent) () : 0)
 612
 613 static inline struct btrace_target_info *
 614 target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
 615 {
 616   if (the_target->enable_btrace == nullptr)
 617     error (_("Target does not support branch tracing."));
 618
 619   return (*the_target->enable_btrace) (ptid, conf);
 620 }
 621
 622 static inline int
 623 target_disable_btrace (struct btrace_target_info *tinfo)
 624 {
 625   if (the_target->disable_btrace == nullptr)
 626     error (_("Target does not support branch tracing."));
 627
 628   return (*the_target->disable_btrace) (tinfo);
 629 }
 630
 631 static inline int
 632 target_read_btrace (struct btrace_target_info *tinfo,
 633                     struct buffer *buffer,
 634                     enum btrace_read_type type)
 635 {
 636   if (the_target->read_btrace == nullptr)
 637     error (_("Target does not support branch tracing."));
 638
 639   return (*the_target->read_btrace) (tinfo, buffer, type);
 640 }
 641
 642 static inline int
 643 target_read_btrace_conf (struct btrace_target_info *tinfo,
 644                          struct buffer *buffer)
 645 {
 646   if (the_target->read_btrace_conf == nullptr)
 647     error (_("Target does not support branch tracing."));
 648
 649   return (*the_target->read_btrace_conf) (tinfo, buffer);
 650 }
 651
 652 #define target_supports_range_stepping() \
 653   (the_target->supports_range_stepping ? \
 654    (*the_target->supports_range_stepping) () : 0)
 655
 656 #define target_supports_stopped_by_sw_breakpoint() \
 657   the_target->pt->supports_stopped_by_sw_breakpoint ()
 658
 659 #define target_stopped_by_sw_breakpoint() \
 660   the_target->pt->stopped_by_sw_breakpoint ()
 661
 662 #define target_supports_stopped_by_hw_breakpoint() \
 663   the_target->pt->supports_stopped_by_hw_breakpoint ()
 664
 665 #define target_supports_hardware_single_step() \
 666   the_target->pt->supports_hardware_single_step ()
 667
 668 #define target_stopped_by_hw_breakpoint() \
 669   the_target->pt->stopped_by_hw_breakpoint ()
 670
 671 #define target_breakpoint_kind_from_pc(pcptr) \
 672   (the_target->breakpoint_kind_from_pc \
 673    ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
 674    : default_breakpoint_kind_from_pc (pcptr))
 675
 676 #define target_breakpoint_kind_from_current_state(pcptr) \
 677   (the_target->breakpoint_kind_from_current_state \
 678    ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
 679    : target_breakpoint_kind_from_pc (pcptr))
 680
 681 #define target_supports_software_single_step() \
 682   (the_target->supports_software_single_step ? \
 683    (*the_target->supports_software_single_step) () : 0)
 684
 685 ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
 686                int connected_wait);
 687
 688 /* Prepare to read or write memory from the inferior process.  See the
 689    corresponding process_stratum_target methods for more details.  */
 690
 691 int prepare_to_access_memory (void);
 692 void done_accessing_memory (void);
 693
 694 #define target_core_of_thread(ptid)             \
 695   the_target->pt->core_of_thread (ptid)
 696
 697 #define target_thread_name(ptid)                                \
 698   (the_target->thread_name ? (*the_target->thread_name) (ptid)  \
 699    : NULL)
 700
 701 #define target_thread_handle(ptid, handle, handle_len) \
 702    (the_target->thread_handle ? (*the_target->thread_handle) \
 703                                   (ptid, handle, handle_len) \
 704    : false)
 705
 706 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 707
 708 int set_desired_thread ();
 709
 710 const char *target_pid_to_str (ptid_t);
 711
 712 int default_breakpoint_kind_from_pc (CORE_ADDR *pcptr);
 713
 714 #endif /* GDBSERVER_TARGET_H */