gdb/gdbserver/target.h

   1 /* Target operations for the remote server for GDB.
   2    Copyright (C) 2002-2019 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 "common/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 struct target_ops
  67 {
  68   /* Start a new process.
  69
  70      PROGRAM is a path to the program to execute.
  71      PROGRAM_ARGS is a standard NULL-terminated array of arguments,
  72      to be passed to the inferior as ``argv'' (along with PROGRAM).
  73
  74      Returns the new PID on success, -1 on failure.  Registers the new
  75      process with the process list.  */
  76   int (*create_inferior) (const char *program,
  77                           const std::vector<char *> &program_args);
  78
  79   /* Do additional setup after a new process is created, including
  80      exec-wrapper completion.  */
  81   void (*post_create_inferior) (void);
  82
  83   /* Attach to a running process.
  84
  85      PID is the process ID to attach to, specified by the user
  86      or a higher layer.
  87
  88      Returns -1 if attaching is unsupported, 0 on success, and calls
  89      error() otherwise.  */
  90
  91   int (*attach) (unsigned long pid);
  92
  93   /* Kill process PROC.  Return -1 on failure, and 0 on success.  */
  94
  95   int (*kill) (process_info *proc);
  96
  97   /* Detach from process PROC.  Return -1 on failure, and 0 on
  98      success.  */
  99
 100   int (*detach) (process_info *proc);
 101
 102   /* The inferior process has died.  Do what is right.  */
 103
 104   void (*mourn) (struct process_info *proc);
 105
 106   /* Wait for process PID to exit.  */
 107
 108   void (*join) (int pid);
 109
 110   /* Return 1 iff the thread with process ID PID is alive.  */
 111
 112   int (*thread_alive) (ptid_t pid);
 113
 114   /* Resume the inferior process.  */
 115
 116   void (*resume) (struct thread_resume *resume_info, size_t n);
 117
 118   /* Wait for the inferior process or thread to change state.  Store
 119      status through argument pointer STATUS.
 120
 121      PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
 122      wait for any thread of process pid to do something.  Return ptid
 123      of child, or -1 in case of error; store status through argument
 124      pointer STATUS.  OPTIONS is a bit set of options defined as
 125      TARGET_W* above.  If options contains TARGET_WNOHANG and there's
 126      no child stop to report, return is
 127      null_ptid/TARGET_WAITKIND_IGNORE.  */
 128
 129   ptid_t (*wait) (ptid_t ptid, struct target_waitstatus *status, int options);
 130
 131   /* Fetch registers from the inferior process.
 132
 133      If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO.  */
 134
 135   void (*fetch_registers) (struct regcache *regcache, int regno);
 136
 137   /* Store registers to the inferior process.
 138
 139      If REGNO is -1, store all registers; otherwise, store at least REGNO.  */
 140
 141   void (*store_registers) (struct regcache *regcache, int regno);
 142
 143   /* Prepare to read or write memory from the inferior process.
 144      Targets use this to do what is necessary to get the state of the
 145      inferior such that it is possible to access memory.
 146
 147      This should generally only be called from client facing routines,
 148      such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
 149      insertion routine.
 150
 151      Like `read_memory' and `write_memory' below, returns 0 on success
 152      and errno on failure.  */
 153
 154   int (*prepare_to_access_memory) (void);
 155
 156   /* Undo the effects of prepare_to_access_memory.  */
 157
 158   void (*done_accessing_memory) (void);
 159
 160   /* Read memory from the inferior process.  This should generally be
 161      called through read_inferior_memory, which handles breakpoint shadowing.
 162
 163      Read LEN bytes at MEMADDR into a buffer at MYADDR.
 164
 165      Returns 0 on success and errno on failure.  */
 166
 167   int (*read_memory) (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 168
 169   /* Write memory to the inferior process.  This should generally be
 170      called through write_inferior_memory, which handles breakpoint shadowing.
 171
 172      Write LEN bytes from the buffer at MYADDR to MEMADDR.
 173
 174      Returns 0 on success and errno on failure.  */
 175
 176   int (*write_memory) (CORE_ADDR memaddr, const unsigned char *myaddr,
 177                        int len);
 178
 179   /* Query GDB for the values of any symbols we're interested in.
 180      This function is called whenever we receive a "qSymbols::"
 181      query, which corresponds to every time more symbols (might)
 182      become available.  NULL if we aren't interested in any
 183      symbols.  */
 184
 185   void (*look_up_symbols) (void);
 186
 187   /* Send an interrupt request to the inferior process,
 188      however is appropriate.  */
 189
 190   void (*request_interrupt) (void);
 191
 192   /* Read auxiliary vector data from the inferior process.
 193
 194      Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 195
 196   int (*read_auxv) (CORE_ADDR offset, unsigned char *myaddr,
 197                     unsigned int len);
 198
 199   /* Returns true if GDB Z breakpoint type TYPE is supported, false
 200      otherwise.  The type is coded as follows:
 201        '0' - software-breakpoint
 202        '1' - hardware-breakpoint
 203        '2' - write watchpoint
 204        '3' - read watchpoint
 205        '4' - access watchpoint
 206   */
 207   int (*supports_z_point_type) (char z_type);
 208
 209   /* Insert and remove a break or watchpoint.
 210      Returns 0 on success, -1 on failure and 1 on unsupported.  */
 211
 212   int (*insert_point) (enum raw_bkpt_type type, CORE_ADDR addr,
 213                        int size, struct raw_breakpoint *bp);
 214   int (*remove_point) (enum raw_bkpt_type type, CORE_ADDR addr,
 215                        int size, struct raw_breakpoint *bp);
 216
 217   /* Returns 1 if the target stopped because it executed a software
 218      breakpoint instruction, 0 otherwise.  */
 219   int (*stopped_by_sw_breakpoint) (void);
 220
 221   /* Returns true if the target knows whether a trap was caused by a
 222      SW breakpoint triggering.  */
 223   int (*supports_stopped_by_sw_breakpoint) (void);
 224
 225   /* Returns 1 if the target stopped for a hardware breakpoint.  */
 226   int (*stopped_by_hw_breakpoint) (void);
 227
 228   /* Returns true if the target knows whether a trap was caused by a
 229      HW breakpoint triggering.  */
 230   int (*supports_stopped_by_hw_breakpoint) (void);
 231
 232   /* Returns true if the target can do hardware single step.  */
 233   int (*supports_hardware_single_step) (void);
 234
 235   /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise.  */
 236
 237   int (*stopped_by_watchpoint) (void);
 238
 239   /* Returns the address associated with the watchpoint that hit, if any;
 240      returns 0 otherwise.  */
 241
 242   CORE_ADDR (*stopped_data_address) (void);
 243
 244   /* Reports the text, data offsets of the executable.  This is
 245      needed for uclinux where the executable is relocated during load
 246      time.  */
 247
 248   int (*read_offsets) (CORE_ADDR *text, CORE_ADDR *data);
 249
 250   /* Fetch the address associated with a specific thread local storage
 251      area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
 252      Stores it in *ADDRESS and returns zero on success; otherwise returns
 253      an error code.  A return value of -1 means this system does not
 254      support the operation.  */
 255
 256   int (*get_tls_address) (struct thread_info *thread, CORE_ADDR offset,
 257                           CORE_ADDR load_module, CORE_ADDR *address);
 258
 259    /* Read/Write from/to spufs using qXfer packets.  */
 260   int (*qxfer_spu) (const char *annex, unsigned char *readbuf,
 261                     unsigned const char *writebuf, CORE_ADDR offset, int len);
 262
 263   /* Fill BUF with an hostio error packet representing the last hostio
 264      error.  */
 265   void (*hostio_last_error) (char *buf);
 266
 267   /* Read/Write OS data using qXfer packets.  */
 268   int (*qxfer_osdata) (const char *annex, unsigned char *readbuf,
 269                        unsigned const char *writebuf, CORE_ADDR offset,
 270                        int len);
 271
 272   /* Read/Write extra signal info.  */
 273   int (*qxfer_siginfo) (const char *annex, unsigned char *readbuf,
 274                         unsigned const char *writebuf,
 275                         CORE_ADDR offset, int len);
 276
 277   int (*supports_non_stop) (void);
 278
 279   /* Enables async target events.  Returns the previous enable
 280      state.  */
 281   int (*async) (int enable);
 282
 283   /* Switch to non-stop (1) or all-stop (0) mode.  Return 0 on
 284      success, -1 otherwise.  */
 285   int (*start_non_stop) (int);
 286
 287   /* Returns true if the target supports multi-process debugging.  */
 288   int (*supports_multi_process) (void);
 289
 290   /* Returns true if fork events are supported.  */
 291   int (*supports_fork_events) (void);
 292
 293   /* Returns true if vfork events are supported.  */
 294   int (*supports_vfork_events) (void);
 295
 296   /* Returns true if exec events are supported.  */
 297   int (*supports_exec_events) (void);
 298
 299   /* Allows target to re-initialize connection-specific settings.  */
 300   void (*handle_new_gdb_connection) (void);
 301
 302   /* If not NULL, target-specific routine to process monitor command.
 303      Returns 1 if handled, or 0 to perform default processing.  */
 304   int (*handle_monitor_command) (char *);
 305
 306   /* Returns the core given a thread, or -1 if not known.  */
 307   int (*core_of_thread) (ptid_t);
 308
 309   /* Read loadmaps.  Read LEN bytes at OFFSET into a buffer at MYADDR.  */
 310   int (*read_loadmap) (const char *annex, CORE_ADDR offset,
 311                        unsigned char *myaddr, unsigned int len);
 312
 313   /* Target specific qSupported support.  FEATURES is an array of
 314      features with COUNT elements.  */
 315   void (*process_qsupported) (char **features, int count);
 316
 317   /* Return 1 if the target supports tracepoints, 0 (or leave the
 318      callback NULL) otherwise.  */
 319   int (*supports_tracepoints) (void);
 320
 321   /* Read PC from REGCACHE.  */
 322   CORE_ADDR (*read_pc) (struct regcache *regcache);
 323
 324   /* Write PC to REGCACHE.  */
 325   void (*write_pc) (struct regcache *regcache, CORE_ADDR pc);
 326
 327   /* Return true if THREAD is known to be stopped now.  */
 328   int (*thread_stopped) (struct thread_info *thread);
 329
 330   /* Read Thread Information Block address.  */
 331   int (*get_tib_address) (ptid_t ptid, CORE_ADDR *address);
 332
 333   /* Pause all threads.  If FREEZE, arrange for any resume attempt to
 334      be ignored until an unpause_all call unfreezes threads again.
 335      There can be nested calls to pause_all, so a freeze counter
 336      should be maintained.  */
 337   void (*pause_all) (int freeze);
 338
 339   /* Unpause all threads.  Threads that hadn't been resumed by the
 340      client should be left stopped.  Basically a pause/unpause call
 341      pair should not end up resuming threads that were stopped before
 342      the pause call.  */
 343   void (*unpause_all) (int unfreeze);
 344
 345   /* Stabilize all threads.  That is, force them out of jump pads.  */
 346   void (*stabilize_threads) (void);
 347
 348   /* Install a fast tracepoint jump pad.  TPOINT is the address of the
 349      tracepoint internal object as used by the IPA agent.  TPADDR is
 350      the address of tracepoint.  COLLECTOR is address of the function
 351      the jump pad redirects to.  LOCKADDR is the address of the jump
 352      pad lock object.  ORIG_SIZE is the size in bytes of the
 353      instruction at TPADDR.  JUMP_ENTRY points to the address of the
 354      jump pad entry, and on return holds the address past the end of
 355      the created jump pad.  If a trampoline is created by the function,
 356      then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
 357      the trampoline, else they remain unchanged.  JJUMP_PAD_INSN is a
 358      buffer containing a copy of the instruction at TPADDR.
 359      ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
 360      return the address range where the instruction at TPADDR was relocated
 361      to.  If an error occurs, the ERR may be used to pass on an error
 362      message.  */
 363   int (*install_fast_tracepoint_jump_pad) (CORE_ADDR tpoint, CORE_ADDR tpaddr,
 364                                            CORE_ADDR collector,
 365                                            CORE_ADDR lockaddr,
 366                                            ULONGEST orig_size,
 367                                            CORE_ADDR *jump_entry,
 368                                            CORE_ADDR *trampoline,
 369                                            ULONGEST *trampoline_size,
 370                                            unsigned char *jjump_pad_insn,
 371                                            ULONGEST *jjump_pad_insn_size,
 372                                            CORE_ADDR *adjusted_insn_addr,
 373                                            CORE_ADDR *adjusted_insn_addr_end,
 374                                            char *err);
 375
 376   /* Return the bytecode operations vector for the current inferior.
 377      Returns NULL if bytecode compilation is not supported.  */
 378   struct emit_ops *(*emit_ops) (void);
 379
 380   /* Returns true if the target supports disabling randomization.  */
 381   int (*supports_disable_randomization) (void);
 382
 383   /* Return the minimum length of an instruction that can be safely overwritten
 384      for use as a fast tracepoint.  */
 385   int (*get_min_fast_tracepoint_insn_len) (void);
 386
 387   /* Read solib info on SVR4 platforms.  */
 388   int (*qxfer_libraries_svr4) (const char *annex, unsigned char *readbuf,
 389                                unsigned const char *writebuf,
 390                                CORE_ADDR offset, int len);
 391
 392   /* Return true if target supports debugging agent.  */
 393   int (*supports_agent) (void);
 394
 395   /* Enable branch tracing for PTID based on CONF and allocate a branch trace
 396      target information struct for reading and for disabling branch trace.  */
 397   struct btrace_target_info *(*enable_btrace)
 398     (ptid_t ptid, const struct btrace_config *conf);
 399
 400   /* Disable branch tracing.
 401      Returns zero on success, non-zero otherwise.  */
 402   int (*disable_btrace) (struct btrace_target_info *tinfo);
 403
 404   /* Read branch trace data into buffer.
 405      Return 0 on success; print an error message into BUFFER and return -1,
 406      otherwise.  */
 407   int (*read_btrace) (struct btrace_target_info *, struct buffer *,
 408                       enum btrace_read_type type);
 409
 410   /* Read the branch trace configuration into BUFFER.
 411      Return 0 on success; print an error message into BUFFER and return -1
 412      otherwise.  */
 413   int (*read_btrace_conf) (const struct btrace_target_info *, struct buffer *);
 414
 415   /* Return true if target supports range stepping.  */
 416   int (*supports_range_stepping) (void);
 417
 418   /* Return the full absolute name of the executable file that was
 419      run to create the process PID.  If the executable file cannot
 420      be determined, NULL is returned.  Otherwise, a pointer to a
 421      character string containing the pathname is returned.  This
 422      string should be copied into a buffer by the client if the string
 423      will not be immediately used, or if it must persist.  */
 424   char *(*pid_to_exec_file) (int pid);
 425
 426   /* Multiple-filesystem-aware open.  Like open(2), but operating in
 427      the filesystem as it appears to process PID.  Systems where all
 428      processes share a common filesystem should set this to NULL.
 429      If NULL, the caller should fall back to open(2).  */
 430   int (*multifs_open) (int pid, const char *filename,
 431                        int flags, mode_t mode);
 432
 433   /* Multiple-filesystem-aware unlink.  Like unlink(2), but operates
 434      in the filesystem as it appears to process PID.  Systems where
 435      all processes share a common filesystem should set this to NULL.
 436      If NULL, the caller should fall back to unlink(2).  */
 437   int (*multifs_unlink) (int pid, const char *filename);
 438
 439   /* Multiple-filesystem-aware readlink.  Like readlink(2), but
 440      operating in the filesystem as it appears to process PID.
 441      Systems where all processes share a common filesystem should
 442      set this to NULL.  If NULL, the caller should fall back to
 443      readlink(2).  */
 444   ssize_t (*multifs_readlink) (int pid, const char *filename,
 445                                char *buf, size_t bufsiz);
 446
 447   /* Return the breakpoint kind for this target based on PC.  The PCPTR is
 448      adjusted to the real memory location in case a flag (e.g., the Thumb bit on
 449      ARM) was present in the PC.  */
 450   int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr);
 451
 452   /* Return the software breakpoint from KIND.  KIND can have target
 453      specific meaning like the Z0 kind parameter.
 454      SIZE is set to the software breakpoint's length in memory.  */
 455   const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size);
 456
 457   /* Return the thread's name, or NULL if the target is unable to determine it.
 458      The returned value must not be freed by the caller.  */
 459   const char *(*thread_name) (ptid_t thread);
 460
 461   /* Return the breakpoint kind for this target based on the current
 462      processor state (e.g. the current instruction mode on ARM) and the
 463      PC.  The PCPTR is adjusted to the real memory location in case a flag
 464      (e.g., the Thumb bit on ARM) is present in the PC.  */
 465   int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr);
 466
 467   /* Returns true if the target can software single step.  */
 468   int (*supports_software_single_step) (void);
 469
 470   /* Return 1 if the target supports catch syscall, 0 (or leave the
 471      callback NULL) otherwise.  */
 472   int (*supports_catch_syscall) (void);
 473
 474   /* Return tdesc index for IPA.  */
 475   int (*get_ipa_tdesc_idx) (void);
 476
 477   /* Thread ID to (numeric) thread handle: Return true on success and
 478      false for failure.  Return pointer to thread handle via HANDLE
 479      and the handle's length via HANDLE_LEN.  */
 480   bool (*thread_handle) (ptid_t ptid, gdb_byte **handle, int *handle_len);
 481 };
 482
 483 extern struct target_ops *the_target;
 484
 485 void set_target_ops (struct target_ops *);
 486
 487 #define create_inferior(program, program_args)  \
 488   (*the_target->create_inferior) (program, program_args)
 489
 490 #define target_post_create_inferior()                    \
 491   do                                                     \
 492     {                                                    \
 493       if (the_target->post_create_inferior != NULL)      \
 494         (*the_target->post_create_inferior) ();          \
 495     } while (0)
 496
 497 #define myattach(pid) \
 498   (*the_target->attach) (pid)
 499
 500 int kill_inferior (process_info *proc);
 501
 502 #define target_supports_fork_events() \
 503   (the_target->supports_fork_events ? \
 504    (*the_target->supports_fork_events) () : 0)
 505
 506 #define target_supports_vfork_events() \
 507   (the_target->supports_vfork_events ? \
 508    (*the_target->supports_vfork_events) () : 0)
 509
 510 #define target_supports_exec_events() \
 511   (the_target->supports_exec_events ? \
 512    (*the_target->supports_exec_events) () : 0)
 513
 514 #define target_handle_new_gdb_connection()               \
 515   do                                                     \
 516     {                                                    \
 517       if (the_target->handle_new_gdb_connection != NULL) \
 518         (*the_target->handle_new_gdb_connection) ();     \
 519     } while (0)
 520
 521 #define detach_inferior(proc) \
 522   (*the_target->detach) (proc)
 523
 524 #define mythread_alive(pid) \
 525   (*the_target->thread_alive) (pid)
 526
 527 #define fetch_inferior_registers(regcache, regno)       \
 528   (*the_target->fetch_registers) (regcache, regno)
 529
 530 #define store_inferior_registers(regcache, regno) \
 531   (*the_target->store_registers) (regcache, regno)
 532
 533 #define join_inferior(pid) \
 534   (*the_target->join) (pid)
 535
 536 #define target_supports_non_stop() \
 537   (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
 538
 539 #define target_async(enable) \
 540   (the_target->async ? (*the_target->async) (enable) : 0)
 541
 542 #define target_process_qsupported(features, count)      \
 543   do                                                    \
 544     {                                                   \
 545       if (the_target->process_qsupported)               \
 546         the_target->process_qsupported (features, count); \
 547     } while (0)
 548
 549 #define target_supports_catch_syscall()                 \
 550   (the_target->supports_catch_syscall ?                 \
 551    (*the_target->supports_catch_syscall) () : 0)
 552
 553 #define target_get_ipa_tdesc_idx()                      \
 554   (the_target->get_ipa_tdesc_idx                        \
 555    ? (*the_target->get_ipa_tdesc_idx) () : 0)
 556
 557 #define target_supports_tracepoints()                   \
 558   (the_target->supports_tracepoints                     \
 559    ? (*the_target->supports_tracepoints) () : 0)
 560
 561 #define target_supports_fast_tracepoints()              \
 562   (the_target->install_fast_tracepoint_jump_pad != NULL)
 563
 564 #define target_get_min_fast_tracepoint_insn_len()       \
 565   (the_target->get_min_fast_tracepoint_insn_len         \
 566    ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
 567
 568 #define thread_stopped(thread) \
 569   (*the_target->thread_stopped) (thread)
 570
 571 #define pause_all(freeze)                       \
 572   do                                            \
 573     {                                           \
 574       if (the_target->pause_all)                \
 575         (*the_target->pause_all) (freeze);      \
 576     } while (0)
 577
 578 #define unpause_all(unfreeze)                   \
 579   do                                            \
 580     {                                           \
 581       if (the_target->unpause_all)              \
 582         (*the_target->unpause_all) (unfreeze);  \
 583     } while (0)
 584
 585 #define stabilize_threads()                     \
 586   do                                            \
 587     {                                           \
 588       if (the_target->stabilize_threads)        \
 589         (*the_target->stabilize_threads) ();    \
 590     } while (0)
 591
 592 #define install_fast_tracepoint_jump_pad(tpoint, tpaddr,                \
 593                                          collector, lockaddr,           \
 594                                          orig_size,                     \
 595                                          jump_entry,                    \
 596                                          trampoline, trampoline_size,   \
 597                                          jjump_pad_insn,                \
 598                                          jjump_pad_insn_size,           \
 599                                          adjusted_insn_addr,            \
 600                                          adjusted_insn_addr_end,        \
 601                                          err)                           \
 602   (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr,      \
 603                                                    collector,lockaddr,  \
 604                                                    orig_size, jump_entry, \
 605                                                    trampoline,          \
 606                                                    trampoline_size,     \
 607                                                    jjump_pad_insn,      \
 608                                                    jjump_pad_insn_size, \
 609                                                    adjusted_insn_addr,  \
 610                                                    adjusted_insn_addr_end, \
 611                                                    err)
 612
 613 #define target_emit_ops() \
 614   (the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
 615
 616 #define target_supports_disable_randomization() \
 617   (the_target->supports_disable_randomization ? \
 618    (*the_target->supports_disable_randomization) () : 0)
 619
 620 #define target_supports_agent() \
 621   (the_target->supports_agent ? \
 622    (*the_target->supports_agent) () : 0)
 623
 624 static inline struct btrace_target_info *
 625 target_enable_btrace (ptid_t ptid, const struct btrace_config *conf)
 626 {
 627   if (the_target->enable_btrace == nullptr)
 628     error (_("Target does not support branch tracing."));
 629
 630   return (*the_target->enable_btrace) (ptid, conf);
 631 }
 632
 633 static inline int
 634 target_disable_btrace (struct btrace_target_info *tinfo)
 635 {
 636   if (the_target->disable_btrace == nullptr)
 637     error (_("Target does not support branch tracing."));
 638
 639   return (*the_target->disable_btrace) (tinfo);
 640 }
 641
 642 static inline int
 643 target_read_btrace (struct btrace_target_info *tinfo,
 644                     struct buffer *buffer,
 645                     enum btrace_read_type type)
 646 {
 647   if (the_target->read_btrace == nullptr)
 648     error (_("Target does not support branch tracing."));
 649
 650   return (*the_target->read_btrace) (tinfo, buffer, type);
 651 }
 652
 653 static inline int
 654 target_read_btrace_conf (struct btrace_target_info *tinfo,
 655                          struct buffer *buffer)
 656 {
 657   if (the_target->read_btrace_conf == nullptr)
 658     error (_("Target does not support branch tracing."));
 659
 660   return (*the_target->read_btrace_conf) (tinfo, buffer);
 661 }
 662
 663 #define target_supports_range_stepping() \
 664   (the_target->supports_range_stepping ? \
 665    (*the_target->supports_range_stepping) () : 0)
 666
 667 #define target_supports_stopped_by_sw_breakpoint() \
 668   (the_target->supports_stopped_by_sw_breakpoint ? \
 669    (*the_target->supports_stopped_by_sw_breakpoint) () : 0)
 670
 671 #define target_stopped_by_sw_breakpoint() \
 672   (the_target->stopped_by_sw_breakpoint ? \
 673    (*the_target->stopped_by_sw_breakpoint) () : 0)
 674
 675 #define target_supports_stopped_by_hw_breakpoint() \
 676   (the_target->supports_stopped_by_hw_breakpoint ? \
 677    (*the_target->supports_stopped_by_hw_breakpoint) () : 0)
 678
 679 #define target_supports_hardware_single_step() \
 680   (the_target->supports_hardware_single_step ? \
 681    (*the_target->supports_hardware_single_step) () : 0)
 682
 683 #define target_stopped_by_hw_breakpoint() \
 684   (the_target->stopped_by_hw_breakpoint ? \
 685    (*the_target->stopped_by_hw_breakpoint) () : 0)
 686
 687 #define target_breakpoint_kind_from_pc(pcptr) \
 688   (the_target->breakpoint_kind_from_pc \
 689    ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
 690    : default_breakpoint_kind_from_pc (pcptr))
 691
 692 #define target_breakpoint_kind_from_current_state(pcptr) \
 693   (the_target->breakpoint_kind_from_current_state \
 694    ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
 695    : target_breakpoint_kind_from_pc (pcptr))
 696
 697 #define target_supports_software_single_step() \
 698   (the_target->supports_software_single_step ? \
 699    (*the_target->supports_software_single_step) () : 0)
 700
 701 /* Start non-stop mode, returns 0 on success, -1 on failure.   */
 702
 703 int start_non_stop (int nonstop);
 704
 705 ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
 706                int connected_wait);
 707
 708 /* Prepare to read or write memory from the inferior process.  See the
 709    corresponding target_ops methods for more details.  */
 710
 711 int prepare_to_access_memory (void);
 712 void done_accessing_memory (void);
 713
 714 #define target_core_of_thread(ptid)             \
 715   (the_target->core_of_thread ? (*the_target->core_of_thread) (ptid) \
 716    : -1)
 717
 718 #define target_thread_name(ptid)                                \
 719   (the_target->thread_name ? (*the_target->thread_name) (ptid)  \
 720    : NULL)
 721
 722 #define target_thread_handle(ptid, handle, handle_len) \
 723    (the_target->thread_handle ? (*the_target->thread_handle) \
 724                                   (ptid, handle, handle_len) \
 725    : false)
 726
 727 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 728
 729 int write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
 730                            int len);
 731
 732 int set_desired_thread ();
 733
 734 const char *target_pid_to_str (ptid_t);
 735
 736 int target_can_do_hardware_single_step (void);
 737
 738 int default_breakpoint_kind_from_pc (CORE_ADDR *pcptr);
 739
 740 #endif /* GDBSERVER_TARGET_H */