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, see <http://www.gnu.org/licenses/>. *
  29  ***************************************************************************/
  30
  31 #ifndef OPENOCD_TARGET_TARGET_H
  32 #define OPENOCD_TARGET_TARGET_H
  33
  34 #include <helper/list.h>
  35
  36 struct reg;
  37 struct trace;
  38 struct command_context;
  39 struct command_invocation;
  40 struct breakpoint;
  41 struct watchpoint;
  42 struct mem_param;
  43 struct reg_param;
  44 struct target_list;
  45 struct gdb_fileio_info;
  46
  47 /*
  48  * TARGET_UNKNOWN = 0: we don't know anything about the target yet
  49  * TARGET_RUNNING = 1: the target is executing user code
  50  * TARGET_HALTED  = 2: the target is not executing code, and ready to talk to the
  51  * debugger. on an xscale it means that the debug handler is executing
  52  * TARGET_RESET   = 3: the target is being held in reset (only a temporary state,
  53  * not sure how this is used with all the recent changes)
  54  * TARGET_DEBUG_RUNNING = 4: the target is running, but it is executing code on
  55  * behalf of the debugger (e.g. algorithm for flashing)
  56  *
  57  * also see: target_state_name();
  58  */
  59
  60 enum target_state {
  61         TARGET_UNKNOWN = 0,
  62         TARGET_RUNNING = 1,
  63         TARGET_HALTED = 2,
  64         TARGET_RESET = 3,
  65         TARGET_DEBUG_RUNNING = 4,
  66 };
  67
  68 enum nvp_assert {
  69         NVP_DEASSERT,
  70         NVP_ASSERT,
  71 };
  72
  73 enum target_reset_mode {
  74         RESET_UNKNOWN = 0,
  75         RESET_RUN = 1,          /* reset and let target run */
  76         RESET_HALT = 2,         /* reset and halt target out of reset */
  77         RESET_INIT = 3,         /* reset and halt target out of reset, then run init script */
  78 };
  79
  80 enum target_debug_reason {
  81         DBG_REASON_DBGRQ = 0,
  82         DBG_REASON_BREAKPOINT = 1,
  83         DBG_REASON_WATCHPOINT = 2,
  84         DBG_REASON_WPTANDBKPT = 3,
  85         DBG_REASON_SINGLESTEP = 4,
  86         DBG_REASON_NOTHALTED = 5,
  87         DBG_REASON_EXIT = 6,
  88         DBG_REASON_EXC_CATCH = 7,
  89         DBG_REASON_UNDEFINED = 8,
  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         target_addr_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         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         /** Should we defer examine to later */
 136         bool defer_examine;
 137
 138         /**
 139          * Indicates whether this target has been examined.
 140          *
 141          * Do @b not access this field directly, use target_was_examined()
 142          * or target_set_examined().
 143          */
 144         bool examined;
 145
 146         /**
 147          * true if the  target is currently running a downloaded
 148          * "algorithm" instead of arbitrary user code. OpenOCD code
 149          * invoking algorithms is trusted to maintain correctness of
 150          * any cached state (e.g. for flash status), which arbitrary
 151          * code will have no reason to know about.
 152          */
 153         bool running_alg;
 154
 155         struct target_event_action *event_action;
 156
 157         int reset_halt;                                         /* attempt resetting the CPU into the halted mode? */
 158         target_addr_t working_area;                             /* working area (initialised RAM). Evaluated
 159                                                                                  * upon first allocation from virtual/physical address. */
 160         bool working_area_virt_spec;            /* virtual address specified? */
 161         target_addr_t working_area_virt;                        /* virtual address */
 162         bool working_area_phys_spec;            /* physical address specified? */
 163         target_addr_t working_area_phys;                        /* physical address */
 164         uint32_t working_area_size;                     /* size in bytes */
 165         uint32_t backup_working_area;           /* whether the content of the working area has to be preserved */
 166         struct working_area *working_areas;/* list of allocated working areas */
 167         enum target_debug_reason debug_reason;/* reason why the target entered debug state */
 168         enum target_endianness endianness;      /* target endianness */
 169         /* also see: target_state_name() */
 170         enum target_state state;                        /* the current backend-state (running, halted, ...) */
 171         struct reg_cache *reg_cache;            /* the first register cache of the target (core regs) */
 172         struct breakpoint *breakpoints;         /* list of breakpoints */
 173         struct watchpoint *watchpoints;         /* list of watchpoints */
 174         struct trace *trace_info;                       /* generic trace information */
 175         struct debug_msg_receiver *dbgmsg;      /* list of debug message receivers */
 176         uint32_t dbg_msg_enabled;                       /* debug message status */
 177         void *arch_info;                                        /* architecture specific information */
 178         void *private_config;                           /* pointer to target specific config data (for jim_configure hook) */
 179         struct target *next;                            /* next target in list */
 180
 181         bool verbose_halt_msg;                          /* display async info in telnet session. Do not display
 182                                                                                  * lots of halted/resumed info when stepping in debugger. */
 183         bool halt_issued;                                       /* did we transition to halted state? */
 184         int64_t halt_issued_time;                       /* Note time when halt was issued */
 185
 186                                                                                 /* ARM v7/v8 targets with ADIv5 interface */
 187         bool dbgbase_set;                                       /* By default the debug base is not set */
 188         uint32_t dbgbase;                                       /* Really a Cortex-A specific option, but there is no
 189                                                                                  * system in place to support target specific options
 190                                                                                  * currently. */
 191         bool has_dap;                                           /* set to true if target has ADIv5 support */
 192         bool dap_configured;                            /* set to true if ADIv5 DAP is configured */
 193         bool tap_configured;                            /* set to true if JTAG tap has been configured
 194                                                                                  * through -chain-position */
 195
 196         struct rtos *rtos;                                      /* Instance of Real Time Operating System support */
 197         bool rtos_auto_detect;                          /* A flag that indicates that the RTOS has been specified as "auto"
 198                                                                                  * and must be detected when symbols are offered */
 199         struct backoff_timer backoff;
 200         int smp;                                                        /* add some target attributes for smp support */
 201         struct target_list *head;
 202         /* the gdb service is there in case of smp, we have only one gdb server
 203          * for all smp target
 204          * the target attached to the gdb is changing dynamically by changing
 205          * gdb_service->target pointer */
 206         struct gdb_service *gdb_service;
 207
 208         /* file-I/O information for host to do syscall */
 209         struct gdb_fileio_info *fileio_info;
 210
 211         char *gdb_port_override;                        /* target-specific override for gdb_port */
 212
 213         /* The semihosting information, extracted from the target. */
 214         struct semihosting *semihosting;
 215 };
 216
 217 struct target_list {
 218         struct target *target;
 219         struct target_list *next;
 220 };
 221
 222 struct gdb_fileio_info {
 223         char *identifier;
 224         uint64_t param_1;
 225         uint64_t param_2;
 226         uint64_t param_3;
 227         uint64_t param_4;
 228 };
 229
 230 /** Returns a description of the endianness for the specified target. */
 231 static inline const char *target_endianness(struct target *target)
 232 {
 233         return (target->endianness == TARGET_ENDIAN_UNKNOWN) ? "unknown" :
 234                         (target->endianness == TARGET_BIG_ENDIAN) ? "big endian" : "little endian";
 235 }
 236
 237 /** Returns the instance-specific name of the specified target. */
 238 static inline const char *target_name(struct target *target)
 239 {
 240         return target->cmd_name;
 241 }
 242
 243 const char *debug_reason_name(struct target *t);
 244
 245 enum target_event {
 246
 247         /* allow GDB to do stuff before others handle the halted event,
 248          * this is in lieu of defining ordering of invocation of events,
 249          * which would be more complicated
 250          *
 251          * Telling GDB to halt does not mean that the target stopped running,
 252          * simply that we're dropping out of GDB's waiting for step or continue.
 253          *
 254          * This can be useful when e.g. detecting power dropout.
 255          */
 256         TARGET_EVENT_GDB_HALT,
 257         TARGET_EVENT_HALTED,            /* target entered debug state from normal execution or reset */
 258         TARGET_EVENT_RESUMED,           /* target resumed to normal execution */
 259         TARGET_EVENT_RESUME_START,
 260         TARGET_EVENT_RESUME_END,
 261
 262         TARGET_EVENT_GDB_START, /* debugger started execution (step/run) */
 263         TARGET_EVENT_GDB_END, /* debugger stopped execution (step/run) */
 264
 265         TARGET_EVENT_RESET_START,
 266         TARGET_EVENT_RESET_ASSERT_PRE,
 267         TARGET_EVENT_RESET_ASSERT,      /* C code uses this instead of SRST */
 268         TARGET_EVENT_RESET_ASSERT_POST,
 269         TARGET_EVENT_RESET_DEASSERT_PRE,
 270         TARGET_EVENT_RESET_DEASSERT_POST,
 271         TARGET_EVENT_RESET_INIT,
 272         TARGET_EVENT_RESET_END,
 273
 274         TARGET_EVENT_DEBUG_HALTED,      /* target entered debug state, but was executing on behalf of the debugger */
 275         TARGET_EVENT_DEBUG_RESUMED, /* target resumed to execute on behalf of the debugger */
 276
 277         TARGET_EVENT_EXAMINE_START,
 278         TARGET_EVENT_EXAMINE_END,
 279
 280         TARGET_EVENT_GDB_ATTACH,
 281         TARGET_EVENT_GDB_DETACH,
 282
 283         TARGET_EVENT_GDB_FLASH_ERASE_START,
 284         TARGET_EVENT_GDB_FLASH_ERASE_END,
 285         TARGET_EVENT_GDB_FLASH_WRITE_START,
 286         TARGET_EVENT_GDB_FLASH_WRITE_END,
 287
 288         TARGET_EVENT_TRACE_CONFIG,
 289 };
 290
 291 struct target_event_action {
 292         enum target_event event;
 293         struct Jim_Interp *interp;
 294         struct Jim_Obj *body;
 295         struct target_event_action *next;
 296 };
 297
 298 bool target_has_event_action(struct target *target, enum target_event event);
 299
 300 struct target_event_callback {
 301         int (*callback)(struct target *target, enum target_event event, void *priv);
 302         void *priv;
 303         struct target_event_callback *next;
 304 };
 305
 306 struct target_reset_callback {
 307         struct list_head list;
 308         void *priv;
 309         int (*callback)(struct target *target, enum target_reset_mode reset_mode, void *priv);
 310 };
 311
 312 struct target_trace_callback {
 313         struct list_head list;
 314         void *priv;
 315         int (*callback)(struct target *target, size_t len, uint8_t *data, void *priv);
 316 };
 317
 318 enum target_timer_type {
 319         TARGET_TIMER_TYPE_ONESHOT,
 320         TARGET_TIMER_TYPE_PERIODIC
 321 };
 322
 323 struct target_timer_callback {
 324         int (*callback)(void *priv);
 325         unsigned int time_ms;
 326         enum target_timer_type type;
 327         bool removed;
 328         struct timeval when;
 329         void *priv;
 330         struct target_timer_callback *next;
 331 };
 332
 333 struct target_memory_check_block {
 334         target_addr_t address;
 335         uint32_t size;
 336         uint32_t result;
 337 };
 338
 339 int target_register_commands(struct command_context *cmd_ctx);
 340 int target_examine(void);
 341
 342 int target_register_event_callback(
 343                 int (*callback)(struct target *target,
 344                 enum target_event event, void *priv),
 345                 void *priv);
 346 int target_unregister_event_callback(
 347                 int (*callback)(struct target *target,
 348                 enum target_event event, void *priv),
 349                 void *priv);
 350
 351 int target_register_reset_callback(
 352                 int (*callback)(struct target *target,
 353                 enum target_reset_mode reset_mode, void *priv),
 354                 void *priv);
 355 int target_unregister_reset_callback(
 356                 int (*callback)(struct target *target,
 357                 enum target_reset_mode reset_mode, void *priv),
 358                 void *priv);
 359
 360 int target_register_trace_callback(
 361                 int (*callback)(struct target *target,
 362                 size_t len, uint8_t *data, void *priv),
 363                 void *priv);
 364 int target_unregister_trace_callback(
 365                 int (*callback)(struct target *target,
 366                 size_t len, uint8_t *data, void *priv),
 367                 void *priv);
 368
 369 /* Poll the status of the target, detect any error conditions and report them.
 370  *
 371  * Also note that this fn will clear such error conditions, so a subsequent
 372  * invocation will then succeed.
 373  *
 374  * These error conditions can be "sticky" error conditions. E.g. writing
 375  * to memory could be implemented as an open loop and if memory writes
 376  * fails, then a note is made of it, the error is sticky, but the memory
 377  * write loop still runs to completion. This improves performance in the
 378  * normal case as there is no need to verify that every single write succeed,
 379  * yet it is possible to detect error conditions.
 380  */
 381 int target_poll(struct target *target);
 382 int target_resume(struct target *target, int current, target_addr_t address,
 383                 int handle_breakpoints, int debug_execution);
 384 int target_halt(struct target *target);
 385 int target_call_event_callbacks(struct target *target, enum target_event event);
 386 int target_call_reset_callbacks(struct target *target, enum target_reset_mode reset_mode);
 387 int target_call_trace_callbacks(struct target *target, size_t len, uint8_t *data);
 388
 389 /**
 390  * The period is very approximate, the callback can happen much more often
 391  * or much more rarely than specified
 392  */
 393 int target_register_timer_callback(int (*callback)(void *priv),
 394                 unsigned int time_ms, enum target_timer_type type, void *priv);
 395 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv);
 396 int target_call_timer_callbacks(void);
 397 /**
 398  * Invoke this to ensure that e.g. polling timer callbacks happen before
 399  * a synchronous command completes.
 400  */
 401 int target_call_timer_callbacks_now(void);
 402
 403 struct target *get_target_by_num(int num);
 404 struct target *get_current_target(struct command_context *cmd_ctx);
 405 struct target *get_current_target_or_null(struct command_context *cmd_ctx);
 406 struct target *get_target(const char *id);
 407
 408 /**
 409  * Get the target type name.
 410  *
 411  * This routine is a wrapper for the target->type->name field.
 412  * Note that this is not an instance-specific name for his target.
 413  */
 414 const char *target_type_name(struct target *target);
 415
 416 /**
 417  * Examine the specified @a target, letting it perform any
 418  * Initialisation that requires JTAG access.
 419  *
 420  * This routine is a wrapper for target->type->examine.
 421  */
 422 int target_examine_one(struct target *target);
 423
 424 /** @returns @c true if target_set_examined() has been called. */
 425 static inline bool target_was_examined(struct target *target)
 426 {
 427         return target->examined;
 428 }
 429
 430 /** Sets the @c examined flag for the given target. */
 431 /** Use in target->type->examine() after one-time setup is done. */
 432 static inline void target_set_examined(struct target *target)
 433 {
 434         target->examined = true;
 435 }
 436
 437 /**
 438  * Add the @a breakpoint for @a target.
 439  *
 440  * This routine is a wrapper for target->type->add_breakpoint.
 441  */
 442 int target_add_breakpoint(struct target *target,
 443                 struct breakpoint *breakpoint);
 444 /**
 445  * Add the @a ContextID breakpoint  for @a target.
 446  *
 447  * This routine is a wrapper for target->type->add_context_breakpoint.
 448  */
 449 int target_add_context_breakpoint(struct target *target,
 450                 struct breakpoint *breakpoint);
 451 /**
 452  * Add the @a ContextID & IVA breakpoint  for @a target.
 453  *
 454  * This routine is a wrapper for target->type->add_hybrid_breakpoint.
 455  */
 456 int target_add_hybrid_breakpoint(struct target *target,
 457                 struct breakpoint *breakpoint);
 458 /**
 459  * Remove the @a breakpoint for @a target.
 460  *
 461  * This routine is a wrapper for target->type->remove_breakpoint.
 462  */
 463
 464 int target_remove_breakpoint(struct target *target,
 465                 struct breakpoint *breakpoint);
 466 /**
 467  * Add the @a watchpoint for @a target.
 468  *
 469  * This routine is a wrapper for target->type->add_watchpoint.
 470  */
 471 int target_add_watchpoint(struct target *target,
 472                 struct watchpoint *watchpoint);
 473 /**
 474  * Remove the @a watchpoint for @a target.
 475  *
 476  * This routine is a wrapper for target->type->remove_watchpoint.
 477  */
 478 int target_remove_watchpoint(struct target *target,
 479                 struct watchpoint *watchpoint);
 480
 481 /**
 482  * Find out the just hit @a watchpoint for @a target.
 483  *
 484  * This routine is a wrapper for target->type->hit_watchpoint.
 485  */
 486 int target_hit_watchpoint(struct target *target,
 487                 struct watchpoint **watchpoint);
 488
 489 /**
 490  * Obtain the architecture for GDB.
 491  *
 492  * This routine is a wrapper for target->type->get_gdb_arch.
 493  */
 494 const char *target_get_gdb_arch(struct target *target);
 495
 496 /**
 497  * Obtain the registers for GDB.
 498  *
 499  * This routine is a wrapper for target->type->get_gdb_reg_list.
 500  */
 501 int target_get_gdb_reg_list(struct target *target,
 502                 struct reg **reg_list[], int *reg_list_size,
 503                 enum target_register_class reg_class);
 504
 505 /**
 506  * Check if @a target allows GDB connections.
 507  *
 508  * Some target do not implement the necessary code required by GDB.
 509  */
 510 bool target_supports_gdb_connection(struct target *target);
 511
 512 /**
 513  * Step the target.
 514  *
 515  * This routine is a wrapper for target->type->step.
 516  */
 517 int target_step(struct target *target,
 518                 int current, target_addr_t address, int handle_breakpoints);
 519 /**
 520  * Run an algorithm on the @a target given.
 521  *
 522  * This routine is a wrapper for target->type->run_algorithm.
 523  */
 524 int target_run_algorithm(struct target *target,
 525                 int num_mem_params, struct mem_param *mem_params,
 526                 int num_reg_params, struct reg_param *reg_param,
 527                 uint32_t entry_point, uint32_t exit_point,
 528                 int timeout_ms, void *arch_info);
 529
 530 /**
 531  * Starts an algorithm in the background on the @a target given.
 532  *
 533  * This routine is a wrapper for target->type->start_algorithm.
 534  */
 535 int target_start_algorithm(struct target *target,
 536                 int num_mem_params, struct mem_param *mem_params,
 537                 int num_reg_params, struct reg_param *reg_params,
 538                 uint32_t entry_point, uint32_t exit_point,
 539                 void *arch_info);
 540
 541 /**
 542  * Wait for an algorithm on the @a target given.
 543  *
 544  * This routine is a wrapper for target->type->wait_algorithm.
 545  */
 546 int target_wait_algorithm(struct target *target,
 547                 int num_mem_params, struct mem_param *mem_params,
 548                 int num_reg_params, struct reg_param *reg_params,
 549                 uint32_t exit_point, int timeout_ms,
 550                 void *arch_info);
 551
 552 /**
 553  * This routine is a wrapper for asynchronous algorithms.
 554  *
 555  */
 556 int target_run_flash_async_algorithm(struct target *target,
 557                 const uint8_t *buffer, uint32_t count, int block_size,
 558                 int num_mem_params, struct mem_param *mem_params,
 559                 int num_reg_params, struct reg_param *reg_params,
 560                 uint32_t buffer_start, uint32_t buffer_size,
 561                 uint32_t entry_point, uint32_t exit_point,
 562                 void *arch_info);
 563
 564 /**
 565  * Read @a count items of @a size bytes from the memory of @a target at
 566  * the @a address given.
 567  *
 568  * This routine is a wrapper for target->type->read_memory.
 569  */
 570 int target_read_memory(struct target *target,
 571                 target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer);
 572 int target_read_phys_memory(struct target *target,
 573                 target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer);
 574 /**
 575  * Write @a count items of @a size bytes to the memory of @a target at
 576  * the @a address given. @a address must be aligned to @a size
 577  * in target memory.
 578  *
 579  * The endianness is the same in the host and target memory for this
 580  * function.
 581  *
 582  * \todo TODO:
 583  * Really @a buffer should have been defined as "const void *" and
 584  * @a buffer should have been aligned to @a size in the host memory.
 585  *
 586  * This is not enforced via e.g. assert's today and e.g. the
 587  * target_write_buffer fn breaks this assumption.
 588  *
 589  * This routine is wrapper for target->type->write_memory.
 590  */
 591 int target_write_memory(struct target *target,
 592                 target_addr_t address, uint32_t size, uint32_t count, const uint8_t *buffer);
 593 int target_write_phys_memory(struct target *target,
 594                 target_addr_t address, uint32_t size, uint32_t count, const uint8_t *buffer);
 595
 596 /*
 597  * Write to target memory using the virtual address.
 598  *
 599  * Note that this fn is used to implement software breakpoints. Targets
 600  * can implement support for software breakpoints to memory marked as read
 601  * only by making this fn write to ram even if it is read only(MMU or
 602  * MPUs).
 603  *
 604  * It is sufficient to implement for writing a single word(16 or 32 in
 605  * ARM32/16 bit case) to write the breakpoint to ram.
 606  *
 607  * The target should also take care of "other things" to make sure that
 608  * software breakpoints can be written using this function. E.g.
 609  * when there is a separate instruction and data cache, this fn must
 610  * make sure that the instruction cache is synced up to the potential
 611  * code change that can happen as a result of the memory write(typically
 612  * by invalidating the cache).
 613  *
 614  * The high level wrapper fn in target.c will break down this memory write
 615  * request to multiple write requests to the target driver to e.g. guarantee
 616  * that writing 4 bytes to an aligned address happens with a single 32 bit
 617  * write operation, thus making this fn suitable to e.g. write to special
 618  * peripheral registers which do not support byte operations.
 619  */
 620 int target_write_buffer(struct target *target,
 621                 target_addr_t address, uint32_t size, const uint8_t *buffer);
 622 int target_read_buffer(struct target *target,
 623                 target_addr_t address, uint32_t size, uint8_t *buffer);
 624 int target_checksum_memory(struct target *target,
 625                 target_addr_t address, uint32_t size, uint32_t *crc);
 626 int target_blank_check_memory(struct target *target,
 627                 struct target_memory_check_block *blocks, int num_blocks,
 628                 uint8_t erased_value);
 629 int target_wait_state(struct target *target, enum target_state state, int ms);
 630
 631 /**
 632  * Obtain file-I/O information from target for GDB to do syscall.
 633  *
 634  * This routine is a wrapper for target->type->get_gdb_fileio_info.
 635  */
 636 int target_get_gdb_fileio_info(struct target *target, struct gdb_fileio_info *fileio_info);
 637
 638 /**
 639  * Pass GDB file-I/O response to target after finishing host syscall.
 640  *
 641  * This routine is a wrapper for target->type->gdb_fileio_end.
 642  */
 643 int target_gdb_fileio_end(struct target *target, int retcode, int fileio_errno, bool ctrl_c);
 644
 645 /**
 646  * Return the highest accessible address for this target.
 647  */
 648 target_addr_t target_address_max(struct target *target);
 649
 650 /**
 651  * Return the number of address bits this target supports.
 652  *
 653  * This routine is a wrapper for target->type->address_bits.
 654  */
 655 unsigned target_address_bits(struct target *target);
 656
 657 /** Return the *name* of this targets current state */
 658 const char *target_state_name(struct target *target);
 659
 660 /** Return the *name* of a target event enumeration value */
 661 const char *target_event_name(enum target_event event);
 662
 663 /** Return the *name* of a target reset reason enumeration value */
 664 const char *target_reset_mode_name(enum target_reset_mode reset_mode);
 665
 666 /* DANGER!!!!!
 667  *
 668  * if "area" passed in to target_alloc_working_area() points to a memory
 669  * location that goes out of scope (e.g. a pointer on the stack), then
 670  * the caller of target_alloc_working_area() is responsible for invoking
 671  * target_free_working_area() before "area" goes out of scope.
 672  *
 673  * target_free_all_working_areas() will NULL out the "area" pointer
 674  * upon resuming or resetting the CPU.
 675  *
 676  */
 677 int target_alloc_working_area(struct target *target,
 678                 uint32_t size, struct working_area **area);
 679 /* Same as target_alloc_working_area, except that no error is logged
 680  * when ERROR_TARGET_RESOURCE_NOT_AVAILABLE is returned.
 681  *
 682  * This allows the calling code to *try* to allocate target memory
 683  * and have a fallback to another behaviour(slower?).
 684  */
 685 int target_alloc_working_area_try(struct target *target,
 686                 uint32_t size, struct working_area **area);
 687 int target_free_working_area(struct target *target, struct working_area *area);
 688 void target_free_all_working_areas(struct target *target);
 689 uint32_t target_get_working_area_avail(struct target *target);
 690
 691 /**
 692  * Free all the resources allocated by targets and the target layer
 693  */
 694 void target_quit(void);
 695
 696 extern struct target *all_targets;
 697
 698 uint64_t target_buffer_get_u64(struct target *target, const uint8_t *buffer);
 699 uint32_t target_buffer_get_u32(struct target *target, const uint8_t *buffer);
 700 uint32_t target_buffer_get_u24(struct target *target, const uint8_t *buffer);
 701 uint16_t target_buffer_get_u16(struct target *target, const uint8_t *buffer);
 702 void target_buffer_set_u64(struct target *target, uint8_t *buffer, uint64_t value);
 703 void target_buffer_set_u32(struct target *target, uint8_t *buffer, uint32_t value);
 704 void target_buffer_set_u24(struct target *target, uint8_t *buffer, uint32_t value);
 705 void target_buffer_set_u16(struct target *target, uint8_t *buffer, uint16_t value);
 706
 707 void target_buffer_get_u64_array(struct target *target, const uint8_t *buffer, uint32_t count, uint64_t *dstbuf);
 708 void target_buffer_get_u32_array(struct target *target, const uint8_t *buffer, uint32_t count, uint32_t *dstbuf);
 709 void target_buffer_get_u16_array(struct target *target, const uint8_t *buffer, uint32_t count, uint16_t *dstbuf);
 710 void target_buffer_set_u64_array(struct target *target, uint8_t *buffer, uint32_t count, const uint64_t *srcbuf);
 711 void target_buffer_set_u32_array(struct target *target, uint8_t *buffer, uint32_t count, const uint32_t *srcbuf);
 712 void target_buffer_set_u16_array(struct target *target, uint8_t *buffer, uint32_t count, const uint16_t *srcbuf);
 713
 714 int target_read_u64(struct target *target, target_addr_t address, uint64_t *value);
 715 int target_read_u32(struct target *target, target_addr_t address, uint32_t *value);
 716 int target_read_u16(struct target *target, target_addr_t address, uint16_t *value);
 717 int target_read_u8(struct target *target, target_addr_t address, uint8_t *value);
 718 int target_write_u64(struct target *target, target_addr_t address, uint64_t value);
 719 int target_write_u32(struct target *target, target_addr_t address, uint32_t value);
 720 int target_write_u16(struct target *target, target_addr_t address, uint16_t value);
 721 int target_write_u8(struct target *target, target_addr_t address, uint8_t value);
 722
 723 int target_write_phys_u64(struct target *target, target_addr_t address, uint64_t value);
 724 int target_write_phys_u32(struct target *target, target_addr_t address, uint32_t value);
 725 int target_write_phys_u16(struct target *target, target_addr_t address, uint16_t value);
 726 int target_write_phys_u8(struct target *target, target_addr_t address, uint8_t value);
 727
 728 /* Issues USER() statements with target state information */
 729 int target_arch_state(struct target *target);
 730
 731 void target_handle_event(struct target *t, enum target_event e);
 732
 733 void target_handle_md_output(struct command_invocation *cmd,
 734         struct target *target, target_addr_t address, unsigned size,
 735         unsigned count, const uint8_t *buffer);
 736
 737 #define ERROR_TARGET_INVALID    (-300)
 738 #define ERROR_TARGET_INIT_FAILED (-301)
 739 #define ERROR_TARGET_TIMEOUT    (-302)
 740 #define ERROR_TARGET_NOT_HALTED (-304)
 741 #define ERROR_TARGET_FAILURE    (-305)
 742 #define ERROR_TARGET_UNALIGNED_ACCESS   (-306)
 743 #define ERROR_TARGET_DATA_ABORT (-307)
 744 #define ERROR_TARGET_RESOURCE_NOT_AVAILABLE     (-308)
 745 #define ERROR_TARGET_TRANSLATION_FAULT  (-309)
 746 #define ERROR_TARGET_NOT_RUNNING (-310)
 747 #define ERROR_TARGET_NOT_EXAMINED (-311)
 748 #define ERROR_TARGET_DUPLICATE_BREAKPOINT (-312)
 749
 750 extern bool get_target_reset_nag(void);
 751
 752 #endif /* OPENOCD_TARGET_TARGET_H */