src/target/target.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007-2010 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2008 by Spencer Oliver                                  *
   9  *   spen@spen-soft.co.uk                                                  *
  10  *                                                                         *
  11  *   Copyright (C) 2011 by Broadcom Corporation                            *
  12  *   Evan Hunter - ehunter@broadcom.com                                    *
  13  *                                                                         *
  14  *   Copyright (C) ST-Ericsson SA 2011                                     *
  15  *   michel.jaouen@stericsson.com : smp minimum support                    *
  16  *                                                                         *
  17  *   This program is free software; you can redistribute it and/or modify  *
  18  *   it under the terms of the GNU General Public License as published by  *
  19  *   the Free Software Foundation; either version 2 of the License, or     *
  20  *   (at your option) any later version.                                   *
  21  *                                                                         *
  22  *   This program is distributed in the hope that it will be useful,       *
  23  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  24  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  25  *   GNU General Public License for more details.                          *
  26  *                                                                         *
  27  *   You should have received a copy of the GNU General Public License     *
  28  *   along with this program; if not, write to the                         *
  29  *   Free Software Foundation, Inc.,                                       *
  30  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  31  ***************************************************************************/
  32
  33 #ifndef TARGET_H
  34 #define TARGET_H
  35
  36 #include <helper/list.h>
  37
  38 struct reg;
  39 struct trace;
  40 struct command_context;
  41 struct breakpoint;
  42 struct watchpoint;
  43 struct mem_param;
  44 struct reg_param;
  45 struct target_list;
  46 struct gdb_fileio_info;
  47
  48 /*
  49  * TARGET_UNKNOWN = 0: we don't know anything about the target yet
  50  * TARGET_RUNNING = 1: the target is executing user code
  51  * TARGET_HALTED  = 2: the target is not executing code, and ready to talk to the
  52  * debugger. on an xscale it means that the debug handler is executing
  53  * TARGET_RESET   = 3: the target is being held in reset (only a temporary state,
  54  * not sure how this is used with all the recent changes)
  55  * TARGET_DEBUG_RUNNING = 4: the target is running, but it is executing code on
  56  * behalf of the debugger (e.g. algorithm for flashing)
  57  *
  58  * also see: target_state_name();
  59  */
  60
  61 enum target_state {
  62         TARGET_UNKNOWN = 0,
  63         TARGET_RUNNING = 1,
  64         TARGET_HALTED = 2,
  65         TARGET_RESET = 3,
  66         TARGET_DEBUG_RUNNING = 4,
  67 };
  68
  69 enum nvp_assert {
  70         NVP_DEASSERT,
  71         NVP_ASSERT,
  72 };
  73
  74 enum target_reset_mode {
  75         RESET_UNKNOWN = 0,
  76         RESET_RUN = 1,          /* reset and let target run */
  77         RESET_HALT = 2,         /* reset and halt target out of reset */
  78         RESET_INIT = 3,         /* reset and halt target out of reset, then run init script */
  79 };
  80
  81 enum target_debug_reason {
  82         DBG_REASON_DBGRQ = 0,
  83         DBG_REASON_BREAKPOINT = 1,
  84         DBG_REASON_WATCHPOINT = 2,
  85         DBG_REASON_WPTANDBKPT = 3,
  86         DBG_REASON_SINGLESTEP = 4,
  87         DBG_REASON_NOTHALTED = 5,
  88         DBG_REASON_EXIT = 6,
  89         DBG_REASON_UNDEFINED = 7,
  90 };
  91
  92 enum target_endianness {
  93         TARGET_ENDIAN_UNKNOWN = 0,
  94         TARGET_BIG_ENDIAN = 1, TARGET_LITTLE_ENDIAN = 2
  95 };
  96
  97 struct working_area {
  98         uint32_t address;
  99         uint32_t size;
 100         bool free;
 101         uint8_t *backup;
 102         struct working_area **user;
 103         struct working_area *next;
 104 };
 105
 106 struct gdb_service {
 107         struct target *target;
 108         /*  field for smp display  */
 109         /*  element 0 coreid currently displayed ( 1 till n) */
 110         /*  element 1 coreid to be displayed at next resume 1 till n 0 means resume
 111          *  all cores core displayed  */
 112         int32_t core[2];
 113 };
 114
 115 /* target back off timer */
 116 struct backoff_timer {
 117         int times;
 118         int count;
 119 };
 120
 121 /* split target registers into multiple class */
 122 enum target_register_class {
 123         REG_CLASS_ALL,
 124         REG_CLASS_GENERAL,
 125 };
 126
 127 /* target_type.h contains the full definition of struct target_type */
 128 struct target {
 129         struct target_type *type;                       /* target type definition (name, access functions) */
 130         const char *cmd_name;                           /* tcl Name of target */
 131         int target_number;                                      /* DO NOT USE!  field to be removed in 2010 */
 132         struct jtag_tap *tap;                           /* where on the jtag chain is this */
 133         int32_t coreid;                                         /* which device on the TAP? */
 134
 135         /**
 136          * Indicates whether this target has been examined.
 137          *
 138          * Do @b not access this field directly, use target_was_examined()
 139          * or target_set_examined().
 140          */
 141         bool examined;
 142
 143         /**
 144          * true if the  target is currently running a downloaded
 145          * "algorithm" instead of arbitrary user code. OpenOCD code
 146          * invoking algorithms is trusted to maintain correctness of
 147          * any cached state (e.g. for flash status), which arbitrary
 148          * code will have no reason to know about.
 149          */
 150         bool running_alg;
 151
 152         struct target_event_action *event_action;
 153
 154         int reset_halt;                                         /* attempt resetting the CPU into the halted mode? */
 155         uint32_t working_area;                          /* working area (initialised RAM). Evaluated
 156                                                                                  * upon first allocation from virtual/physical address. */
 157         bool working_area_virt_spec;            /* virtual address specified? */
 158         uint32_t working_area_virt;                     /* virtual address */
 159         bool working_area_phys_spec;            /* virtual address specified? */
 160         uint32_t working_area_phys;                     /* physical address */
 161         uint32_t working_area_size;                     /* size in bytes */
 162         uint32_t backup_working_area;           /* whether the content of the working area has to be preserved */
 163         struct working_area *working_areas;/* list of allocated working areas */
 164         enum target_debug_reason debug_reason;/* reason why the target entered debug state */
 165         enum target_endianness endianness;      /* target endianness */
 166         /* also see: target_state_name() */
 167         enum target_state state;                        /* the current backend-state (running, halted, ...) */
 168         struct reg_cache *reg_cache;            /* the first register cache of the target (core regs) */
 169         struct breakpoint *breakpoints;         /* list of breakpoints */
 170         struct watchpoint *watchpoints;         /* list of watchpoints */
 171         struct trace *trace_info;                       /* generic trace information */
 172         struct debug_msg_receiver *dbgmsg;      /* list of debug message receivers */
 173         uint32_t dbg_msg_enabled;                       /* debug message status */
 174         void *arch_info;                                        /* architecture specific information */
 175         struct target *next;                            /* next target in list */
 176
 177         int display;                                            /* display async info in telnet session. Do not display
 178                                                                                  * lots of halted/resumed info when stepping in debugger. */
 179         bool halt_issued;                                       /* did we transition to halted state? */
 180         long long halt_issued_time;                     /* Note time when halt was issued */
 181
 182         bool dbgbase_set;                                       /* By default the debug base is not set */
 183         uint32_t dbgbase;                                       /* Really a Cortex-A specific option, but there is no
 184                                                                                  * system in place to support target specific options
 185                                                                                  * currently. */
 186         struct rtos *rtos;                                      /* Instance of Real Time Operating System support */
 187         bool rtos_auto_detect;                          /* A flag that indicates that the RTOS has been specified as "auto"
 188                                                                                  * and must be detected when symbols are offered */
 189         struct backoff_timer backoff;
 190         int smp;                                                        /* add some target attributes for smp support */
 191         struct target_list *head;
 192         /* the gdb service is there in case of smp, we have only one gdb server
 193          * for all smp target
 194          * the target attached to the gdb is changing dynamically by changing
 195          * gdb_service->target pointer */
 196         struct gdb_service *gdb_service;
 197
 198         /* file-I/O information for host to do syscall */
 199         struct gdb_fileio_info *fileio_info;
 200 };
 201
 202 struct target_list {
 203         struct target *target;
 204         struct target_list *next;
 205 };
 206
 207 struct gdb_fileio_info {
 208         char *identifier;
 209         uint32_t param_1;
 210         uint32_t param_2;
 211         uint32_t param_3;
 212         uint32_t param_4;
 213 };
 214
 215 /** Returns the instance-specific name of the specified target. */
 216 static inline const char *target_name(struct target *target)
 217 {
 218         return target->cmd_name;
 219 }
 220
 221 const char *debug_reason_name(struct target *t);
 222
 223 enum target_event {
 224
 225         /* allow GDB to do stuff before others handle the halted event,
 226          * this is in lieu of defining ordering of invocation of events,
 227          * which would be more complicated
 228          *
 229          * Telling GDB to halt does not mean that the target stopped running,
 230          * simply that we're dropping out of GDB's waiting for step or continue.
 231          *
 232          * This can be useful when e.g. detecting power dropout.
 233          */
 234         TARGET_EVENT_GDB_HALT,
 235         TARGET_EVENT_HALTED,            /* target entered debug state from normal execution or reset */
 236         TARGET_EVENT_RESUMED,           /* target resumed to normal execution */
 237         TARGET_EVENT_RESUME_START,
 238         TARGET_EVENT_RESUME_END,
 239
 240         TARGET_EVENT_GDB_START, /* debugger started execution (step/run) */
 241         TARGET_EVENT_GDB_END, /* debugger stopped execution (step/run) */
 242
 243         TARGET_EVENT_RESET_START,
 244         TARGET_EVENT_RESET_ASSERT_PRE,
 245         TARGET_EVENT_RESET_ASSERT,      /* C code uses this instead of SRST */
 246         TARGET_EVENT_RESET_ASSERT_POST,
 247         TARGET_EVENT_RESET_DEASSERT_PRE,
 248         TARGET_EVENT_RESET_DEASSERT_POST,
 249         TARGET_EVENT_RESET_HALT_PRE,
 250         TARGET_EVENT_RESET_HALT_POST,
 251         TARGET_EVENT_RESET_WAIT_PRE,
 252         TARGET_EVENT_RESET_WAIT_POST,
 253         TARGET_EVENT_RESET_INIT,
 254         TARGET_EVENT_RESET_END,
 255
 256         TARGET_EVENT_DEBUG_HALTED,      /* target entered debug state, but was executing on behalf of the debugger */
 257         TARGET_EVENT_DEBUG_RESUMED, /* target resumed to execute on behalf of the debugger */
 258
 259         TARGET_EVENT_EXAMINE_START,
 260         TARGET_EVENT_EXAMINE_END,
 261
 262         TARGET_EVENT_GDB_ATTACH,
 263         TARGET_EVENT_GDB_DETACH,
 264
 265         TARGET_EVENT_GDB_FLASH_ERASE_START,
 266         TARGET_EVENT_GDB_FLASH_ERASE_END,
 267         TARGET_EVENT_GDB_FLASH_WRITE_START,
 268         TARGET_EVENT_GDB_FLASH_WRITE_END,
 269
 270         TARGET_EVENT_TRACE_CONFIG,
 271 };
 272
 273 struct target_event_action {
 274         enum target_event event;
 275         struct Jim_Interp *interp;
 276         struct Jim_Obj *body;
 277         int has_percent;
 278         struct target_event_action *next;
 279 };
 280
 281 bool target_has_event_action(struct target *target, enum target_event event);
 282
 283 struct target_event_callback {
 284         int (*callback)(struct target *target, enum target_event event, void *priv);
 285         void *priv;
 286         struct target_event_callback *next;
 287 };
 288
 289 struct target_reset_callback {
 290         struct list_head list;
 291         void *priv;
 292         int (*callback)(struct target *target, enum target_reset_mode reset_mode, void *priv);
 293 };
 294
 295 struct target_timer_callback {
 296         int (*callback)(void *priv);
 297         int time_ms;
 298         int periodic;
 299         bool removed;
 300         struct timeval when;
 301         void *priv;
 302         struct target_timer_callback *next;
 303 };
 304
 305 int target_register_commands(struct command_context *cmd_ctx);
 306 int target_examine(void);
 307
 308 int target_register_event_callback(
 309                 int (*callback)(struct target *target,
 310                 enum target_event event, void *priv),
 311                 void *priv);
 312 int target_unregister_event_callback(
 313                 int (*callback)(struct target *target,
 314                 enum target_event event, void *priv),
 315                 void *priv);
 316
 317 int target_register_reset_callback(
 318                 int (*callback)(struct target *target,
 319                 enum target_reset_mode reset_mode, void *priv),
 320                 void *priv);
 321 int target_unregister_reset_callback(
 322                 int (*callback)(struct target *target,
 323                 enum target_reset_mode reset_mode, void *priv),
 324                 void *priv);
 325
 326 /* Poll the status of the target, detect any error conditions and report them.
 327  *
 328  * Also note that this fn will clear such error conditions, so a subsequent
 329  * invocation will then succeed.
 330  *
 331  * These error conditions can be "sticky" error conditions. E.g. writing
 332  * to memory could be implemented as an open loop and if memory writes
 333  * fails, then a note is made of it, the error is sticky, but the memory
 334  * write loop still runs to completion. This improves performance in the
 335  * normal case as there is no need to verify that every single write succeed,
 336  * yet it is possible to detect error conditions.
 337  */
 338 int target_poll(struct target *target);
 339 int target_resume(struct target *target, int current, uint32_t address,
 340                 int handle_breakpoints, int debug_execution);
 341 int target_halt(struct target *target);
 342 int target_call_event_callbacks(struct target *target, enum target_event event);
 343 int target_call_reset_callbacks(struct target *target, enum target_reset_mode reset_mode);
 344
 345 /**
 346  * The period is very approximate, the callback can happen much more often
 347  * or much more rarely than specified
 348  */
 349 int target_register_timer_callback(int (*callback)(void *priv),
 350                 int time_ms, int periodic, void *priv);
 351 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv);
 352 int target_call_timer_callbacks(void);
 353 /**
 354  * Invoke this to ensure that e.g. polling timer callbacks happen before
 355  * a synchronous command completes.
 356  */
 357 int target_call_timer_callbacks_now(void);
 358
 359 struct target *get_current_target(struct command_context *cmd_ctx);
 360 struct target *get_target(const char *id);
 361
 362 /**
 363  * Get the target type name.
 364  *
 365  * This routine is a wrapper for the target->type->name field.
 366  * Note that this is not an instance-specific name for his target.
 367  */
 368 const char *target_type_name(struct target *target);
 369
 370 /**
 371  * Examine the specified @a target, letting it perform any
 372  * Initialisation that requires JTAG access.
 373  *
 374  * This routine is a wrapper for target->type->examine.
 375  */
 376 int target_examine_one(struct target *target);
 377
 378 /** @returns @c true if target_set_examined() has been called. */
 379 static inline bool target_was_examined(struct target *target)
 380 {
 381         return target->examined;
 382 }
 383
 384 /** Sets the @c examined flag for the given target. */
 385 /** Use in target->type->examine() after one-time setup is done. */
 386 static inline void target_set_examined(struct target *target)
 387 {
 388         target->examined = true;
 389 }
 390
 391 /**
 392  * Add the @a breakpoint for @a target.
 393  *
 394  * This routine is a wrapper for target->type->add_breakpoint.
 395  */
 396 int target_add_breakpoint(struct target *target,
 397                 struct breakpoint *breakpoint);
 398 /**
 399  * Add the @a ContextID breakpoint  for @a target.
 400  *
 401  * This routine is a wrapper for target->type->add_context_breakpoint.
 402  */
 403 int target_add_context_breakpoint(struct target *target,
 404                 struct breakpoint *breakpoint);
 405 /**
 406  * Add the @a ContextID & IVA breakpoint  for @a target.
 407  *
 408  * This routine is a wrapper for target->type->add_hybrid_breakpoint.
 409  */
 410 int target_add_hybrid_breakpoint(struct target *target,
 411                 struct breakpoint *breakpoint);
 412 /**
 413  * Remove the @a breakpoint for @a target.
 414  *
 415  * This routine is a wrapper for target->type->remove_breakpoint.
 416  */
 417
 418 int target_remove_breakpoint(struct target *target,
 419                 struct breakpoint *breakpoint);
 420 /**
 421  * Add the @a watchpoint for @a target.
 422  *
 423  * This routine is a wrapper for target->type->add_watchpoint.
 424  */
 425 int target_add_watchpoint(struct target *target,
 426                 struct watchpoint *watchpoint);
 427 /**
 428  * Remove the @a watchpoint for @a target.
 429  *
 430  * This routine is a wrapper for target->type->remove_watchpoint.
 431  */
 432 int target_remove_watchpoint(struct target *target,
 433                 struct watchpoint *watchpoint);
 434
 435 /**
 436  * Find out the just hit @a watchpoint for @a target.
 437  *
 438  * This routine is a wrapper for target->type->hit_watchpoint.
 439  */
 440 int target_hit_watchpoint(struct target *target,
 441                 struct watchpoint **watchpoint);
 442
 443 /**
 444  * Obtain the registers for GDB.
 445  *
 446  * This routine is a wrapper for target->type->get_gdb_reg_list.
 447  */
 448 int target_get_gdb_reg_list(struct target *target,
 449                 struct reg **reg_list[], int *reg_list_size,
 450                 enum target_register_class reg_class);
 451
 452 /**
 453  * Step the target.
 454  *
 455  * This routine is a wrapper for target->type->step.
 456  */
 457 int target_step(struct target *target,
 458                 int current, uint32_t address, int handle_breakpoints);
 459 /**
 460  * Run an algorithm on the @a target given.
 461  *
 462  * This routine is a wrapper for target->type->run_algorithm.
 463  */
 464 int target_run_algorithm(struct target *target,
 465                 int num_mem_params, struct mem_param *mem_params,
 466                 int num_reg_params, struct reg_param *reg_param,
 467                 uint32_t entry_point, uint32_t exit_point,
 468                 int timeout_ms, void *arch_info);
 469
 470 /**
 471  * Starts an algorithm in the background on the @a target given.
 472  *
 473  * This routine is a wrapper for target->type->start_algorithm.
 474  */
 475 int target_start_algorithm(struct target *target,
 476                 int num_mem_params, struct mem_param *mem_params,
 477                 int num_reg_params, struct reg_param *reg_params,
 478                 uint32_t entry_point, uint32_t exit_point,
 479                 void *arch_info);
 480
 481 /**
 482  * Wait for an algorithm on the @a target given.
 483  *
 484  * This routine is a wrapper for target->type->wait_algorithm.
 485  */
 486 int target_wait_algorithm(struct target *target,
 487                 int num_mem_params, struct mem_param *mem_params,
 488                 int num_reg_params, struct reg_param *reg_params,
 489                 uint32_t exit_point, int timeout_ms,
 490                 void *arch_info);
 491
 492 /**
 493  * This routine is a wrapper for asynchronous algorithms.
 494  *
 495  */
 496 int target_run_flash_async_algorithm(struct target *target,
 497                 const uint8_t *buffer, uint32_t count, int block_size,
 498                 int num_mem_params, struct mem_param *mem_params,
 499                 int num_reg_params, struct reg_param *reg_params,
 500                 uint32_t buffer_start, uint32_t buffer_size,
 501                 uint32_t entry_point, uint32_t exit_point,
 502                 void *arch_info);
 503
 504 /**
 505  * Read @a count items of @a size bytes from the memory of @a target at
 506  * the @a address given.
 507  *
 508  * This routine is a wrapper for target->type->read_memory.
 509  */
 510 int target_read_memory(struct target *target,
 511                 uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
 512 int target_read_phys_memory(struct target *target,
 513                 uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer);
 514 /**
 515  * Write @a count items of @a size bytes to the memory of @a target at
 516  * the @a address given. @a address must be aligned to @a size
 517  * in target memory.
 518  *
 519  * The endianness is the same in the host and target memory for this
 520  * function.
 521  *
 522  * \todo TODO:
 523  * Really @a buffer should have been defined as "const void *" and
 524  * @a buffer should have been aligned to @a size in the host memory.
 525  *
 526  * This is not enforced via e.g. assert's today and e.g. the
 527  * target_write_buffer fn breaks this assumption.
 528  *
 529  * This routine is wrapper for target->type->write_memory.
 530  */
 531 int target_write_memory(struct target *target,
 532                 uint32_t address, uint32_t size, uint32_t count, const uint8_t *buffer);
 533 int target_write_phys_memory(struct target *target,
 534                 uint32_t address, uint32_t size, uint32_t count, const uint8_t *buffer);
 535
 536 /*
 537  * Write to target memory using the virtual address.
 538  *
 539  * Note that this fn is used to implement software breakpoints. Targets
 540  * can implement support for software breakpoints to memory marked as read
 541  * only by making this fn write to ram even if it is read only(MMU or
 542  * MPUs).
 543  *
 544  * It is sufficient to implement for writing a single word(16 or 32 in
 545  * ARM32/16 bit case) to write the breakpoint to ram.
 546  *
 547  * The target should also take care of "other things" to make sure that
 548  * software breakpoints can be written using this function. E.g.
 549  * when there is a separate instruction and data cache, this fn must
 550  * make sure that the instruction cache is synced up to the potential
 551  * code change that can happen as a result of the memory write(typically
 552  * by invalidating the cache).
 553  *
 554  * The high level wrapper fn in target.c will break down this memory write
 555  * request to multiple write requests to the target driver to e.g. guarantee
 556  * that writing 4 bytes to an aligned address happens with a single 32 bit
 557  * write operation, thus making this fn suitable to e.g. write to special
 558  * peripheral registers which do not support byte operations.
 559  */
 560 int target_write_buffer(struct target *target,
 561                 uint32_t address, uint32_t size, const uint8_t *buffer);
 562 int target_read_buffer(struct target *target,
 563                 uint32_t address, uint32_t size, uint8_t *buffer);
 564 int target_checksum_memory(struct target *target,
 565                 uint32_t address, uint32_t size, uint32_t *crc);
 566 int target_blank_check_memory(struct target *target,
 567                 uint32_t address, uint32_t size, uint32_t *blank);
 568 int target_wait_state(struct target *target, enum target_state state, int ms);
 569
 570 /**
 571  * Obtain file-I/O information from target for GDB to do syscall.
 572  *
 573  * This routine is a wrapper for target->type->get_gdb_fileio_info.
 574  */
 575 int target_get_gdb_fileio_info(struct target *target, struct gdb_fileio_info *fileio_info);
 576
 577 /**
 578  * Pass GDB file-I/O response to target after finishing host syscall.
 579  *
 580  * This routine is a wrapper for target->type->gdb_fileio_end.
 581  */
 582 int target_gdb_fileio_end(struct target *target, int retcode, int fileio_errno, bool ctrl_c);
 583
 584
 585
 586 /** Return the *name* of this targets current state */
 587 const char *target_state_name(struct target *target);
 588
 589 /** Return the *name* of a target event enumeration value */
 590 const char *target_event_name(enum target_event event);
 591
 592 /** Return the *name* of a target reset reason enumeration value */
 593 const char *target_reset_mode_name(enum target_reset_mode reset_mode);
 594
 595 /* DANGER!!!!!
 596  *
 597  * if "area" passed in to target_alloc_working_area() points to a memory
 598  * location that goes out of scope (e.g. a pointer on the stack), then
 599  * the caller of target_alloc_working_area() is responsible for invoking
 600  * target_free_working_area() before "area" goes out of scope.
 601  *
 602  * target_free_all_working_areas() will NULL out the "area" pointer
 603  * upon resuming or resetting the CPU.
 604  *
 605  */
 606 int target_alloc_working_area(struct target *target,
 607                 uint32_t size, struct working_area **area);
 608 /* Same as target_alloc_working_area, except that no error is logged
 609  * when ERROR_TARGET_RESOURCE_NOT_AVAILABLE is returned.
 610  *
 611  * This allows the calling code to *try* to allocate target memory
 612  * and have a fallback to another behaviour(slower?).
 613  */
 614 int target_alloc_working_area_try(struct target *target,
 615                 uint32_t size, struct working_area **area);
 616 int target_free_working_area(struct target *target, struct working_area *area);
 617 void target_free_all_working_areas(struct target *target);
 618 uint32_t target_get_working_area_avail(struct target *target);
 619
 620 /**
 621  * Free all the resources allocated by targets and the target layer
 622  */
 623 void target_quit(void);
 624
 625 extern struct target *all_targets;
 626
 627 uint64_t target_buffer_get_u64(struct target *target, const uint8_t *buffer);
 628 uint32_t target_buffer_get_u32(struct target *target, const uint8_t *buffer);
 629 uint32_t target_buffer_get_u24(struct target *target, const uint8_t *buffer);
 630 uint16_t target_buffer_get_u16(struct target *target, const uint8_t *buffer);
 631 void target_buffer_set_u64(struct target *target, uint8_t *buffer, uint64_t value);
 632 void target_buffer_set_u32(struct target *target, uint8_t *buffer, uint32_t value);
 633 void target_buffer_set_u24(struct target *target, uint8_t *buffer, uint32_t value);
 634 void target_buffer_set_u16(struct target *target, uint8_t *buffer, uint16_t value);
 635
 636 void target_buffer_get_u64_array(struct target *target, const uint8_t *buffer, uint32_t count, uint64_t *dstbuf);
 637 void target_buffer_get_u32_array(struct target *target, const uint8_t *buffer, uint32_t count, uint32_t *dstbuf);
 638 void target_buffer_get_u16_array(struct target *target, const uint8_t *buffer, uint32_t count, uint16_t *dstbuf);
 639 void target_buffer_set_u64_array(struct target *target, uint8_t *buffer, uint32_t count, const uint64_t *srcbuf);
 640 void target_buffer_set_u32_array(struct target *target, uint8_t *buffer, uint32_t count, const uint32_t *srcbuf);
 641 void target_buffer_set_u16_array(struct target *target, uint8_t *buffer, uint32_t count, const uint16_t *srcbuf);
 642
 643 int target_read_u64(struct target *target, uint64_t address, uint64_t *value);
 644 int target_read_u32(struct target *target, uint32_t address, uint32_t *value);
 645 int target_read_u16(struct target *target, uint32_t address, uint16_t *value);
 646 int target_read_u8(struct target *target, uint32_t address, uint8_t *value);
 647 int target_write_u64(struct target *target, uint64_t address, uint64_t value);
 648 int target_write_u32(struct target *target, uint32_t address, uint32_t value);
 649 int target_write_u16(struct target *target, uint32_t address, uint16_t value);
 650 int target_write_u8(struct target *target, uint32_t address, uint8_t value);
 651
 652 /* Issues USER() statements with target state information */
 653 int target_arch_state(struct target *target);
 654
 655 void target_handle_event(struct target *t, enum target_event e);
 656
 657 #define ERROR_TARGET_INVALID    (-300)
 658 #define ERROR_TARGET_INIT_FAILED (-301)
 659 #define ERROR_TARGET_TIMEOUT    (-302)
 660 #define ERROR_TARGET_NOT_HALTED (-304)
 661 #define ERROR_TARGET_FAILURE    (-305)
 662 #define ERROR_TARGET_UNALIGNED_ACCESS   (-306)
 663 #define ERROR_TARGET_DATA_ABORT (-307)
 664 #define ERROR_TARGET_RESOURCE_NOT_AVAILABLE     (-308)
 665 #define ERROR_TARGET_TRANSLATION_FAULT  (-309)
 666 #define ERROR_TARGET_NOT_RUNNING (-310)
 667 #define ERROR_TARGET_NOT_EXAMINED (-311)
 668
 669 extern bool get_target_reset_nag(void);
 670
 671 #endif /* TARGET_H */