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