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   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, Duane Ellis                                       *
   9  *   openocd@duaneeellis.com                                               *
  10  *                                                                         *
  11  *   Copyright (C) 2008 by Spencer Oliver                                  *
  12  *   spen@spen-soft.co.uk                                                  *
  13  *                                                                         *
  14  *   Copyright (C) 2008 by Rick Altherr                                    *
  15  *   kc8apf@kc8apf.net>                                                    *
  16  *                                                                         *
  17  *   Copyright (C) 2011 by Broadcom Corporation                            *
  18  *   Evan Hunter - ehunter@broadcom.com                                    *
  19  *                                                                         *
  20  *   Copyright (C) ST-Ericsson SA 2011                                     *
  21  *   michel.jaouen@stericsson.com : smp minimum support                    *
  22  *                                                                         *
  23  *   Copyright (C) 2011 Andreas Fritiofson                                 *
  24  *   andreas.fritiofson@gmail.com                                          *
  25  *                                                                         *
  26  *   This program is free software; you can redistribute it and/or modify  *
  27  *   it under the terms of the GNU General Public License as published by  *
  28  *   the Free Software Foundation; either version 2 of the License, or     *
  29  *   (at your option) any later version.                                   *
  30  *                                                                         *
  31  *   This program is distributed in the hope that it will be useful,       *
  32  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  33  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  34  *   GNU General Public License for more details.                          *
  35  *                                                                         *
  36  *   You should have received a copy of the GNU General Public License     *
  37  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  38  ***************************************************************************/
  39
  40 #ifdef HAVE_CONFIG_H
  41 #include "config.h"
  42 #endif
  43
  44 #include <helper/time_support.h>
  45 #include <jtag/jtag.h>
  46 #include <flash/nor/core.h>
  47
  48 #include "target.h"
  49 #include "target_type.h"
  50 #include "target_request.h"
  51 #include "breakpoints.h"
  52 #include "register.h"
  53 #include "trace.h"
  54 #include "image.h"
  55 #include "rtos/rtos.h"
  56 #include "transport/transport.h"
  57 #include "arm_cti.h"
  58
  59 /* default halt wait timeout (ms) */
  60 #define DEFAULT_HALT_TIMEOUT 5000
  61
  62 static int target_read_buffer_default(struct target *target, target_addr_t address,
  63                 uint32_t count, uint8_t *buffer);
  64 static int target_write_buffer_default(struct target *target, target_addr_t address,
  65                 uint32_t count, const uint8_t *buffer);
  66 static int target_array2mem(Jim_Interp *interp, struct target *target,
  67                 int argc, Jim_Obj * const *argv);
  68 static int target_mem2array(Jim_Interp *interp, struct target *target,
  69                 int argc, Jim_Obj * const *argv);
  70 static int target_register_user_commands(struct command_context *cmd_ctx);
  71 static int target_get_gdb_fileio_info_default(struct target *target,
  72                 struct gdb_fileio_info *fileio_info);
  73 static int target_gdb_fileio_end_default(struct target *target, int retcode,
  74                 int fileio_errno, bool ctrl_c);
  75
  76 /* targets */
  77 extern struct target_type arm7tdmi_target;
  78 extern struct target_type arm720t_target;
  79 extern struct target_type arm9tdmi_target;
  80 extern struct target_type arm920t_target;
  81 extern struct target_type arm966e_target;
  82 extern struct target_type arm946e_target;
  83 extern struct target_type arm926ejs_target;
  84 extern struct target_type fa526_target;
  85 extern struct target_type feroceon_target;
  86 extern struct target_type dragonite_target;
  87 extern struct target_type xscale_target;
  88 extern struct target_type cortexm_target;
  89 extern struct target_type cortexa_target;
  90 extern struct target_type aarch64_target;
  91 extern struct target_type cortexr4_target;
  92 extern struct target_type arm11_target;
  93 extern struct target_type ls1_sap_target;
  94 extern struct target_type mips_m4k_target;
  95 extern struct target_type mips_mips64_target;
  96 extern struct target_type avr_target;
  97 extern struct target_type dsp563xx_target;
  98 extern struct target_type dsp5680xx_target;
  99 extern struct target_type testee_target;
 100 extern struct target_type avr32_ap7k_target;
 101 extern struct target_type hla_target;
 102 extern struct target_type nds32_v2_target;
 103 extern struct target_type nds32_v3_target;
 104 extern struct target_type nds32_v3m_target;
 105 extern struct target_type or1k_target;
 106 extern struct target_type quark_x10xx_target;
 107 extern struct target_type quark_d20xx_target;
 108 extern struct target_type stm8_target;
 109 extern struct target_type riscv_target;
 110 extern struct target_type mem_ap_target;
 111 extern struct target_type esirisc_target;
 112 extern struct target_type arcv2_target;
 113
 114 static struct target_type *target_types[] = {
 115         &arm7tdmi_target,
 116         &arm9tdmi_target,
 117         &arm920t_target,
 118         &arm720t_target,
 119         &arm966e_target,
 120         &arm946e_target,
 121         &arm926ejs_target,
 122         &fa526_target,
 123         &feroceon_target,
 124         &dragonite_target,
 125         &xscale_target,
 126         &cortexm_target,
 127         &cortexa_target,
 128         &cortexr4_target,
 129         &arm11_target,
 130         &ls1_sap_target,
 131         &mips_m4k_target,
 132         &avr_target,
 133         &dsp563xx_target,
 134         &dsp5680xx_target,
 135         &testee_target,
 136         &avr32_ap7k_target,
 137         &hla_target,
 138         &nds32_v2_target,
 139         &nds32_v3_target,
 140         &nds32_v3m_target,
 141         &or1k_target,
 142         &quark_x10xx_target,
 143         &quark_d20xx_target,
 144         &stm8_target,
 145         &riscv_target,
 146         &mem_ap_target,
 147         &esirisc_target,
 148         &arcv2_target,
 149         &aarch64_target,
 150         &mips_mips64_target,
 151         NULL,
 152 };
 153
 154 struct target *all_targets;
 155 static struct target_event_callback *target_event_callbacks;
 156 static struct target_timer_callback *target_timer_callbacks;
 157 static LIST_HEAD(target_reset_callback_list);
 158 static LIST_HEAD(target_trace_callback_list);
 159 static const int polling_interval = 100;
 160
 161 static const Jim_Nvp nvp_assert[] = {
 162         { .name = "assert", NVP_ASSERT },
 163         { .name = "deassert", NVP_DEASSERT },
 164         { .name = "T", NVP_ASSERT },
 165         { .name = "F", NVP_DEASSERT },
 166         { .name = "t", NVP_ASSERT },
 167         { .name = "f", NVP_DEASSERT },
 168         { .name = NULL, .value = -1 }
 169 };
 170
 171 static const Jim_Nvp nvp_error_target[] = {
 172         { .value = ERROR_TARGET_INVALID, .name = "err-invalid" },
 173         { .value = ERROR_TARGET_INIT_FAILED, .name = "err-init-failed" },
 174         { .value = ERROR_TARGET_TIMEOUT, .name = "err-timeout" },
 175         { .value = ERROR_TARGET_NOT_HALTED, .name = "err-not-halted" },
 176         { .value = ERROR_TARGET_FAILURE, .name = "err-failure" },
 177         { .value = ERROR_TARGET_UNALIGNED_ACCESS, .name = "err-unaligned-access" },
 178         { .value = ERROR_TARGET_DATA_ABORT, .name = "err-data-abort" },
 179         { .value = ERROR_TARGET_RESOURCE_NOT_AVAILABLE, .name = "err-resource-not-available" },
 180         { .value = ERROR_TARGET_TRANSLATION_FAULT, .name = "err-translation-fault" },
 181         { .value = ERROR_TARGET_NOT_RUNNING, .name = "err-not-running" },
 182         { .value = ERROR_TARGET_NOT_EXAMINED, .name = "err-not-examined" },
 183         { .value = -1, .name = NULL }
 184 };
 185
 186 static const char *target_strerror_safe(int err)
 187 {
 188         const Jim_Nvp *n;
 189
 190         n = Jim_Nvp_value2name_simple(nvp_error_target, err);
 191         if (n->name == NULL)
 192                 return "unknown";
 193         else
 194                 return n->name;
 195 }
 196
 197 static const Jim_Nvp nvp_target_event[] = {
 198
 199         { .value = TARGET_EVENT_GDB_HALT, .name = "gdb-halt" },
 200         { .value = TARGET_EVENT_HALTED, .name = "halted" },
 201         { .value = TARGET_EVENT_RESUMED, .name = "resumed" },
 202         { .value = TARGET_EVENT_RESUME_START, .name = "resume-start" },
 203         { .value = TARGET_EVENT_RESUME_END, .name = "resume-end" },
 204         { .value = TARGET_EVENT_STEP_START, .name = "step-start" },
 205         { .value = TARGET_EVENT_STEP_END, .name = "step-end" },
 206
 207         { .name = "gdb-start", .value = TARGET_EVENT_GDB_START },
 208         { .name = "gdb-end", .value = TARGET_EVENT_GDB_END },
 209
 210         { .value = TARGET_EVENT_RESET_START,         .name = "reset-start" },
 211         { .value = TARGET_EVENT_RESET_ASSERT_PRE,    .name = "reset-assert-pre" },
 212         { .value = TARGET_EVENT_RESET_ASSERT,        .name = "reset-assert" },
 213         { .value = TARGET_EVENT_RESET_ASSERT_POST,   .name = "reset-assert-post" },
 214         { .value = TARGET_EVENT_RESET_DEASSERT_PRE,  .name = "reset-deassert-pre" },
 215         { .value = TARGET_EVENT_RESET_DEASSERT_POST, .name = "reset-deassert-post" },
 216         { .value = TARGET_EVENT_RESET_INIT,          .name = "reset-init" },
 217         { .value = TARGET_EVENT_RESET_END,           .name = "reset-end" },
 218
 219         { .value = TARGET_EVENT_EXAMINE_START, .name = "examine-start" },
 220         { .value = TARGET_EVENT_EXAMINE_FAIL, .name = "examine-fail" },
 221         { .value = TARGET_EVENT_EXAMINE_END, .name = "examine-end" },
 222
 223         { .value = TARGET_EVENT_DEBUG_HALTED, .name = "debug-halted" },
 224         { .value = TARGET_EVENT_DEBUG_RESUMED, .name = "debug-resumed" },
 225
 226         { .value = TARGET_EVENT_GDB_ATTACH, .name = "gdb-attach" },
 227         { .value = TARGET_EVENT_GDB_DETACH, .name = "gdb-detach" },
 228
 229         { .value = TARGET_EVENT_GDB_FLASH_WRITE_START, .name = "gdb-flash-write-start" },
 230         { .value = TARGET_EVENT_GDB_FLASH_WRITE_END,   .name = "gdb-flash-write-end"   },
 231
 232         { .value = TARGET_EVENT_GDB_FLASH_ERASE_START, .name = "gdb-flash-erase-start" },
 233         { .value = TARGET_EVENT_GDB_FLASH_ERASE_END,   .name = "gdb-flash-erase-end" },
 234
 235         { .value = TARGET_EVENT_TRACE_CONFIG, .name = "trace-config" },
 236
 237         { .name = NULL, .value = -1 }
 238 };
 239
 240 static const Jim_Nvp nvp_target_state[] = {
 241         { .name = "unknown", .value = TARGET_UNKNOWN },
 242         { .name = "running", .value = TARGET_RUNNING },
 243         { .name = "halted",  .value = TARGET_HALTED },
 244         { .name = "reset",   .value = TARGET_RESET },
 245         { .name = "debug-running", .value = TARGET_DEBUG_RUNNING },
 246         { .name = NULL, .value = -1 },
 247 };
 248
 249 static const Jim_Nvp nvp_target_debug_reason[] = {
 250         { .name = "debug-request",             .value = DBG_REASON_DBGRQ },
 251         { .name = "breakpoint",                .value = DBG_REASON_BREAKPOINT },
 252         { .name = "watchpoint",                .value = DBG_REASON_WATCHPOINT },
 253         { .name = "watchpoint-and-breakpoint", .value = DBG_REASON_WPTANDBKPT },
 254         { .name = "single-step",               .value = DBG_REASON_SINGLESTEP },
 255         { .name = "target-not-halted",         .value = DBG_REASON_NOTHALTED  },
 256         { .name = "program-exit",              .value = DBG_REASON_EXIT },
 257         { .name = "exception-catch",           .value = DBG_REASON_EXC_CATCH },
 258         { .name = "undefined",                 .value = DBG_REASON_UNDEFINED },
 259         { .name = NULL, .value = -1 },
 260 };
 261
 262 static const Jim_Nvp nvp_target_endian[] = {
 263         { .name = "big",    .value = TARGET_BIG_ENDIAN },
 264         { .name = "little", .value = TARGET_LITTLE_ENDIAN },
 265         { .name = "be",     .value = TARGET_BIG_ENDIAN },
 266         { .name = "le",     .value = TARGET_LITTLE_ENDIAN },
 267         { .name = NULL,     .value = -1 },
 268 };
 269
 270 static const Jim_Nvp nvp_reset_modes[] = {
 271         { .name = "unknown", .value = RESET_UNKNOWN },
 272         { .name = "run",     .value = RESET_RUN },
 273         { .name = "halt",    .value = RESET_HALT },
 274         { .name = "init",    .value = RESET_INIT },
 275         { .name = NULL,      .value = -1 },
 276 };
 277
 278 const char *debug_reason_name(struct target *t)
 279 {
 280         const char *cp;
 281
 282         cp = Jim_Nvp_value2name_simple(nvp_target_debug_reason,
 283                         t->debug_reason)->name;
 284         if (!cp) {
 285                 LOG_ERROR("Invalid debug reason: %d", (int)(t->debug_reason));
 286                 cp = "(*BUG*unknown*BUG*)";
 287         }
 288         return cp;
 289 }
 290
 291 const char *target_state_name(struct target *t)
 292 {
 293         const char *cp;
 294         cp = Jim_Nvp_value2name_simple(nvp_target_state, t->state)->name;
 295         if (!cp) {
 296                 LOG_ERROR("Invalid target state: %d", (int)(t->state));
 297                 cp = "(*BUG*unknown*BUG*)";
 298         }
 299
 300         if (!target_was_examined(t) && t->defer_examine)
 301                 cp = "examine deferred";
 302
 303         return cp;
 304 }
 305
 306 const char *target_event_name(enum target_event event)
 307 {
 308         const char *cp;
 309         cp = Jim_Nvp_value2name_simple(nvp_target_event, event)->name;
 310         if (!cp) {
 311                 LOG_ERROR("Invalid target event: %d", (int)(event));
 312                 cp = "(*BUG*unknown*BUG*)";
 313         }
 314         return cp;
 315 }
 316
 317 const char *target_reset_mode_name(enum target_reset_mode reset_mode)
 318 {
 319         const char *cp;
 320         cp = Jim_Nvp_value2name_simple(nvp_reset_modes, reset_mode)->name;
 321         if (!cp) {
 322                 LOG_ERROR("Invalid target reset mode: %d", (int)(reset_mode));
 323                 cp = "(*BUG*unknown*BUG*)";
 324         }
 325         return cp;
 326 }
 327
 328 /* determine the number of the new target */
 329 static int new_target_number(void)
 330 {
 331         struct target *t;
 332         int x;
 333
 334         /* number is 0 based */
 335         x = -1;
 336         t = all_targets;
 337         while (t) {
 338                 if (x < t->target_number)
 339                         x = t->target_number;
 340                 t = t->next;
 341         }
 342         return x + 1;
 343 }
 344
 345 static void append_to_list_all_targets(struct target *target)
 346 {
 347         struct target **t = &all_targets;
 348
 349         while (*t)
 350                 t = &((*t)->next);
 351         *t = target;
 352 }
 353
 354 /* read a uint64_t from a buffer in target memory endianness */
 355 uint64_t target_buffer_get_u64(struct target *target, const uint8_t *buffer)
 356 {
 357         if (target->endianness == TARGET_LITTLE_ENDIAN)
 358                 return le_to_h_u64(buffer);
 359         else
 360                 return be_to_h_u64(buffer);
 361 }
 362
 363 /* read a uint32_t from a buffer in target memory endianness */
 364 uint32_t target_buffer_get_u32(struct target *target, const uint8_t *buffer)
 365 {
 366         if (target->endianness == TARGET_LITTLE_ENDIAN)
 367                 return le_to_h_u32(buffer);
 368         else
 369                 return be_to_h_u32(buffer);
 370 }
 371
 372 /* read a uint24_t from a buffer in target memory endianness */
 373 uint32_t target_buffer_get_u24(struct target *target, const uint8_t *buffer)
 374 {
 375         if (target->endianness == TARGET_LITTLE_ENDIAN)
 376                 return le_to_h_u24(buffer);
 377         else
 378                 return be_to_h_u24(buffer);
 379 }
 380
 381 /* read a uint16_t from a buffer in target memory endianness */
 382 uint16_t target_buffer_get_u16(struct target *target, const uint8_t *buffer)
 383 {
 384         if (target->endianness == TARGET_LITTLE_ENDIAN)
 385                 return le_to_h_u16(buffer);
 386         else
 387                 return be_to_h_u16(buffer);
 388 }
 389
 390 /* write a uint64_t to a buffer in target memory endianness */
 391 void target_buffer_set_u64(struct target *target, uint8_t *buffer, uint64_t value)
 392 {
 393         if (target->endianness == TARGET_LITTLE_ENDIAN)
 394                 h_u64_to_le(buffer, value);
 395         else
 396                 h_u64_to_be(buffer, value);
 397 }
 398
 399 /* write a uint32_t to a buffer in target memory endianness */
 400 void target_buffer_set_u32(struct target *target, uint8_t *buffer, uint32_t value)
 401 {
 402         if (target->endianness == TARGET_LITTLE_ENDIAN)
 403                 h_u32_to_le(buffer, value);
 404         else
 405                 h_u32_to_be(buffer, value);
 406 }
 407
 408 /* write a uint24_t to a buffer in target memory endianness */
 409 void target_buffer_set_u24(struct target *target, uint8_t *buffer, uint32_t value)
 410 {
 411         if (target->endianness == TARGET_LITTLE_ENDIAN)
 412                 h_u24_to_le(buffer, value);
 413         else
 414                 h_u24_to_be(buffer, value);
 415 }
 416
 417 /* write a uint16_t to a buffer in target memory endianness */
 418 void target_buffer_set_u16(struct target *target, uint8_t *buffer, uint16_t value)
 419 {
 420         if (target->endianness == TARGET_LITTLE_ENDIAN)
 421                 h_u16_to_le(buffer, value);
 422         else
 423                 h_u16_to_be(buffer, value);
 424 }
 425
 426 /* write a uint8_t to a buffer in target memory endianness */
 427 static void target_buffer_set_u8(struct target *target, uint8_t *buffer, uint8_t value)
 428 {
 429         *buffer = value;
 430 }
 431
 432 /* write a uint64_t array to a buffer in target memory endianness */
 433 void target_buffer_get_u64_array(struct target *target, const uint8_t *buffer, uint32_t count, uint64_t *dstbuf)
 434 {
 435         uint32_t i;
 436         for (i = 0; i < count; i++)
 437                 dstbuf[i] = target_buffer_get_u64(target, &buffer[i * 8]);
 438 }
 439
 440 /* write a uint32_t array to a buffer in target memory endianness */
 441 void target_buffer_get_u32_array(struct target *target, const uint8_t *buffer, uint32_t count, uint32_t *dstbuf)
 442 {
 443         uint32_t i;
 444         for (i = 0; i < count; i++)
 445                 dstbuf[i] = target_buffer_get_u32(target, &buffer[i * 4]);
 446 }
 447
 448 /* write a uint16_t array to a buffer in target memory endianness */
 449 void target_buffer_get_u16_array(struct target *target, const uint8_t *buffer, uint32_t count, uint16_t *dstbuf)
 450 {
 451         uint32_t i;
 452         for (i = 0; i < count; i++)
 453                 dstbuf[i] = target_buffer_get_u16(target, &buffer[i * 2]);
 454 }
 455
 456 /* write a uint64_t array to a buffer in target memory endianness */
 457 void target_buffer_set_u64_array(struct target *target, uint8_t *buffer, uint32_t count, const uint64_t *srcbuf)
 458 {
 459         uint32_t i;
 460         for (i = 0; i < count; i++)
 461                 target_buffer_set_u64(target, &buffer[i * 8], srcbuf[i]);
 462 }
 463
 464 /* write a uint32_t array to a buffer in target memory endianness */
 465 void target_buffer_set_u32_array(struct target *target, uint8_t *buffer, uint32_t count, const uint32_t *srcbuf)
 466 {
 467         uint32_t i;
 468         for (i = 0; i < count; i++)
 469                 target_buffer_set_u32(target, &buffer[i * 4], srcbuf[i]);
 470 }
 471
 472 /* write a uint16_t array to a buffer in target memory endianness */
 473 void target_buffer_set_u16_array(struct target *target, uint8_t *buffer, uint32_t count, const uint16_t *srcbuf)
 474 {
 475         uint32_t i;
 476         for (i = 0; i < count; i++)
 477                 target_buffer_set_u16(target, &buffer[i * 2], srcbuf[i]);
 478 }
 479
 480 /* return a pointer to a configured target; id is name or number */
 481 struct target *get_target(const char *id)
 482 {
 483         struct target *target;
 484
 485         /* try as tcltarget name */
 486         for (target = all_targets; target; target = target->next) {
 487                 if (target_name(target) == NULL)
 488                         continue;
 489                 if (strcmp(id, target_name(target)) == 0)
 490                         return target;
 491         }
 492
 493         /* It's OK to remove this fallback sometime after August 2010 or so */
 494
 495         /* no match, try as number */
 496         unsigned num;
 497         if (parse_uint(id, &num) != ERROR_OK)
 498                 return NULL;
 499
 500         for (target = all_targets; target; target = target->next) {
 501                 if (target->target_number == (int)num) {
 502                         LOG_WARNING("use '%s' as target identifier, not '%u'",
 503                                         target_name(target), num);
 504                         return target;
 505                 }
 506         }
 507
 508         return NULL;
 509 }
 510
 511 /* returns a pointer to the n-th configured target */
 512 struct target *get_target_by_num(int num)
 513 {
 514         struct target *target = all_targets;
 515
 516         while (target) {
 517                 if (target->target_number == num)
 518                         return target;
 519                 target = target->next;
 520         }
 521
 522         return NULL;
 523 }
 524
 525 struct target *get_current_target(struct command_context *cmd_ctx)
 526 {
 527         struct target *target = get_current_target_or_null(cmd_ctx);
 528
 529         if (target == NULL) {
 530                 LOG_ERROR("BUG: current_target out of bounds");
 531                 exit(-1);
 532         }
 533
 534         return target;
 535 }
 536
 537 struct target *get_current_target_or_null(struct command_context *cmd_ctx)
 538 {
 539         return cmd_ctx->current_target_override
 540                 ? cmd_ctx->current_target_override
 541                 : cmd_ctx->current_target;
 542 }
 543
 544 int target_poll(struct target *target)
 545 {
 546         int retval;
 547
 548         /* We can't poll until after examine */
 549         if (!target_was_examined(target)) {
 550                 /* Fail silently lest we pollute the log */
 551                 return ERROR_FAIL;
 552         }
 553
 554         retval = target->type->poll(target);
 555         if (retval != ERROR_OK)
 556                 return retval;
 557
 558         if (target->halt_issued) {
 559                 if (target->state == TARGET_HALTED)
 560                         target->halt_issued = false;
 561                 else {
 562                         int64_t t = timeval_ms() - target->halt_issued_time;
 563                         if (t > DEFAULT_HALT_TIMEOUT) {
 564                                 target->halt_issued = false;
 565                                 LOG_INFO("Halt timed out, wake up GDB.");
 566                                 target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
 567                         }
 568                 }
 569         }
 570
 571         return ERROR_OK;
 572 }
 573
 574 int target_halt(struct target *target)
 575 {
 576         int retval;
 577         /* We can't poll until after examine */
 578         if (!target_was_examined(target)) {
 579                 LOG_ERROR("Target not examined yet");
 580                 return ERROR_FAIL;
 581         }
 582
 583         retval = target->type->halt(target);
 584         if (retval != ERROR_OK)
 585                 return retval;
 586
 587         target->halt_issued = true;
 588         target->halt_issued_time = timeval_ms();
 589
 590         return ERROR_OK;
 591 }
 592
 593 /**
 594  * Make the target (re)start executing using its saved execution
 595  * context (possibly with some modifications).
 596  *
 597  * @param target Which target should start executing.
 598  * @param current True to use the target's saved program counter instead
 599  *      of the address parameter
 600  * @param address Optionally used as the program counter.
 601  * @param handle_breakpoints True iff breakpoints at the resumption PC
 602  *      should be skipped.  (For example, maybe execution was stopped by
 603  *      such a breakpoint, in which case it would be counterproductive to
 604  *      let it re-trigger.
 605  * @param debug_execution False if all working areas allocated by OpenOCD
 606  *      should be released and/or restored to their original contents.
 607  *      (This would for example be true to run some downloaded "helper"
 608  *      algorithm code, which resides in one such working buffer and uses
 609  *      another for data storage.)
 610  *
 611  * @todo Resolve the ambiguity about what the "debug_execution" flag
 612  * signifies.  For example, Target implementations don't agree on how
 613  * it relates to invalidation of the register cache, or to whether
 614  * breakpoints and watchpoints should be enabled.  (It would seem wrong
 615  * to enable breakpoints when running downloaded "helper" algorithms
 616  * (debug_execution true), since the breakpoints would be set to match
 617  * target firmware being debugged, not the helper algorithm.... and
 618  * enabling them could cause such helpers to malfunction (for example,
 619  * by overwriting data with a breakpoint instruction.  On the other
 620  * hand the infrastructure for running such helpers might use this
 621  * procedure but rely on hardware breakpoint to detect termination.)
 622  */
 623 int target_resume(struct target *target, int current, target_addr_t address,
 624                 int handle_breakpoints, int debug_execution)
 625 {
 626         int retval;
 627
 628         /* We can't poll until after examine */
 629         if (!target_was_examined(target)) {
 630                 LOG_ERROR("Target not examined yet");
 631                 return ERROR_FAIL;
 632         }
 633
 634         target_call_event_callbacks(target, TARGET_EVENT_RESUME_START);
 635
 636         /* note that resume *must* be asynchronous. The CPU can halt before
 637          * we poll. The CPU can even halt at the current PC as a result of
 638          * a software breakpoint being inserted by (a bug?) the application.
 639          */
 640         retval = target->type->resume(target, current, address, handle_breakpoints, debug_execution);
 641         if (retval != ERROR_OK)
 642                 return retval;
 643
 644         target_call_event_callbacks(target, TARGET_EVENT_RESUME_END);
 645
 646         return retval;
 647 }
 648
 649 static int target_process_reset(struct command_invocation *cmd, enum target_reset_mode reset_mode)
 650 {
 651         char buf[100];
 652         int retval;
 653         Jim_Nvp *n;
 654         n = Jim_Nvp_value2name_simple(nvp_reset_modes, reset_mode);
 655         if (n->name == NULL) {
 656                 LOG_ERROR("invalid reset mode");
 657                 return ERROR_FAIL;
 658         }
 659
 660         struct target *target;
 661         for (target = all_targets; target; target = target->next)
 662                 target_call_reset_callbacks(target, reset_mode);
 663
 664         /* disable polling during reset to make reset event scripts
 665          * more predictable, i.e. dr/irscan & pathmove in events will
 666          * not have JTAG operations injected into the middle of a sequence.
 667          */
 668         bool save_poll = jtag_poll_get_enabled();
 669
 670         jtag_poll_set_enabled(false);
 671
 672         sprintf(buf, "ocd_process_reset %s", n->name);
 673         retval = Jim_Eval(cmd->ctx->interp, buf);
 674
 675         jtag_poll_set_enabled(save_poll);
 676
 677         if (retval != JIM_OK) {
 678                 Jim_MakeErrorMessage(cmd->ctx->interp);
 679                 command_print(cmd, "%s", Jim_GetString(Jim_GetResult(cmd->ctx->interp), NULL));
 680                 return ERROR_FAIL;
 681         }
 682
 683         /* We want any events to be processed before the prompt */
 684         retval = target_call_timer_callbacks_now();
 685
 686         for (target = all_targets; target; target = target->next) {
 687                 target->type->check_reset(target);
 688                 target->running_alg = false;
 689         }
 690
 691         return retval;
 692 }
 693
 694 static int identity_virt2phys(struct target *target,
 695                 target_addr_t virtual, target_addr_t *physical)
 696 {
 697         *physical = virtual;
 698         return ERROR_OK;
 699 }
 700
 701 static int no_mmu(struct target *target, int *enabled)
 702 {
 703         *enabled = 0;
 704         return ERROR_OK;
 705 }
 706
 707 static int default_examine(struct target *target)
 708 {
 709         target_set_examined(target);
 710         return ERROR_OK;
 711 }
 712
 713 /* no check by default */
 714 static int default_check_reset(struct target *target)
 715 {
 716         return ERROR_OK;
 717 }
 718
 719 /* Equivalent Tcl code arp_examine_one is in src/target/startup.tcl
 720  * Keep in sync */
 721 int target_examine_one(struct target *target)
 722 {
 723         target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_START);
 724
 725         int retval = target->type->examine(target);
 726         if (retval != ERROR_OK) {
 727                 target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_FAIL);
 728                 return retval;
 729         }
 730
 731         target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_END);
 732
 733         return ERROR_OK;
 734 }
 735
 736 static int jtag_enable_callback(enum jtag_event event, void *priv)
 737 {
 738         struct target *target = priv;
 739
 740         if (event != JTAG_TAP_EVENT_ENABLE || !target->tap->enabled)
 741                 return ERROR_OK;
 742
 743         jtag_unregister_event_callback(jtag_enable_callback, target);
 744
 745         return target_examine_one(target);
 746 }
 747
 748 /* Targets that correctly implement init + examine, i.e.
 749  * no communication with target during init:
 750  *
 751  * XScale
 752  */
 753 int target_examine(void)
 754 {
 755         int retval = ERROR_OK;
 756         struct target *target;
 757
 758         for (target = all_targets; target; target = target->next) {
 759                 /* defer examination, but don't skip it */
 760                 if (!target->tap->enabled) {
 761                         jtag_register_event_callback(jtag_enable_callback,
 762                                         target);
 763                         continue;
 764                 }
 765
 766                 if (target->defer_examine)
 767                         continue;
 768
 769                 int retval2 = target_examine_one(target);
 770                 if (retval2 != ERROR_OK) {
 771                         LOG_WARNING("target %s examination failed", target_name(target));
 772                         retval = retval2;
 773                 }
 774         }
 775         return retval;
 776 }
 777
 778 const char *target_type_name(struct target *target)
 779 {
 780         return target->type->name;
 781 }
 782
 783 static int target_soft_reset_halt(struct target *target)
 784 {
 785         if (!target_was_examined(target)) {
 786                 LOG_ERROR("Target not examined yet");
 787                 return ERROR_FAIL;
 788         }
 789         if (!target->type->soft_reset_halt) {
 790                 LOG_ERROR("Target %s does not support soft_reset_halt",
 791                                 target_name(target));
 792                 return ERROR_FAIL;
 793         }
 794         return target->type->soft_reset_halt(target);
 795 }
 796
 797 /**
 798  * Downloads a target-specific native code algorithm to the target,
 799  * and executes it.  * Note that some targets may need to set up, enable,
 800  * and tear down a breakpoint (hard or * soft) to detect algorithm
 801  * termination, while others may support  lower overhead schemes where
 802  * soft breakpoints embedded in the algorithm automatically terminate the
 803  * algorithm.
 804  *
 805  * @param target used to run the algorithm
 806  * @param arch_info target-specific description of the algorithm.
 807  */
 808 int target_run_algorithm(struct target *target,
 809                 int num_mem_params, struct mem_param *mem_params,
 810                 int num_reg_params, struct reg_param *reg_param,
 811                 uint32_t entry_point, uint32_t exit_point,
 812                 int timeout_ms, void *arch_info)
 813 {
 814         int retval = ERROR_FAIL;
 815
 816         if (!target_was_examined(target)) {
 817                 LOG_ERROR("Target not examined yet");
 818                 goto done;
 819         }
 820         if (!target->type->run_algorithm) {
 821                 LOG_ERROR("Target type '%s' does not support %s",
 822                                 target_type_name(target), __func__);
 823                 goto done;
 824         }
 825
 826         target->running_alg = true;
 827         retval = target->type->run_algorithm(target,
 828                         num_mem_params, mem_params,
 829                         num_reg_params, reg_param,
 830                         entry_point, exit_point, timeout_ms, arch_info);
 831         target->running_alg = false;
 832
 833 done:
 834         return retval;
 835 }
 836
 837 /**
 838  * Executes a target-specific native code algorithm and leaves it running.
 839  *
 840  * @param target used to run the algorithm
 841  * @param arch_info target-specific description of the algorithm.
 842  */
 843 int target_start_algorithm(struct target *target,
 844                 int num_mem_params, struct mem_param *mem_params,
 845                 int num_reg_params, struct reg_param *reg_params,
 846                 uint32_t entry_point, uint32_t exit_point,
 847                 void *arch_info)
 848 {
 849         int retval = ERROR_FAIL;
 850
 851         if (!target_was_examined(target)) {
 852                 LOG_ERROR("Target not examined yet");
 853                 goto done;
 854         }
 855         if (!target->type->start_algorithm) {
 856                 LOG_ERROR("Target type '%s' does not support %s",
 857                                 target_type_name(target), __func__);
 858                 goto done;
 859         }
 860         if (target->running_alg) {
 861                 LOG_ERROR("Target is already running an algorithm");
 862                 goto done;
 863         }
 864
 865         target->running_alg = true;
 866         retval = target->type->start_algorithm(target,
 867                         num_mem_params, mem_params,
 868                         num_reg_params, reg_params,
 869                         entry_point, exit_point, arch_info);
 870
 871 done:
 872         return retval;
 873 }
 874
 875 /**
 876  * Waits for an algorithm started with target_start_algorithm() to complete.
 877  *
 878  * @param target used to run the algorithm
 879  * @param arch_info target-specific description of the algorithm.
 880  */
 881 int target_wait_algorithm(struct target *target,
 882                 int num_mem_params, struct mem_param *mem_params,
 883                 int num_reg_params, struct reg_param *reg_params,
 884                 uint32_t exit_point, int timeout_ms,
 885                 void *arch_info)
 886 {
 887         int retval = ERROR_FAIL;
 888
 889         if (!target->type->wait_algorithm) {
 890                 LOG_ERROR("Target type '%s' does not support %s",
 891                                 target_type_name(target), __func__);
 892                 goto done;
 893         }
 894         if (!target->running_alg) {
 895                 LOG_ERROR("Target is not running an algorithm");
 896                 goto done;
 897         }
 898
 899         retval = target->type->wait_algorithm(target,
 900                         num_mem_params, mem_params,
 901                         num_reg_params, reg_params,
 902                         exit_point, timeout_ms, arch_info);
 903         if (retval != ERROR_TARGET_TIMEOUT)
 904                 target->running_alg = false;
 905
 906 done:
 907         return retval;
 908 }
 909
 910 /**
 911  * Streams data to a circular buffer on target intended for consumption by code
 912  * running asynchronously on target.
 913  *
 914  * This is intended for applications where target-specific native code runs
 915  * on the target, receives data from the circular buffer, does something with
 916  * it (most likely writing it to a flash memory), and advances the circular
 917  * buffer pointer.
 918  *
 919  * This assumes that the helper algorithm has already been loaded to the target,
 920  * but has not been started yet. Given memory and register parameters are passed
 921  * to the algorithm.
 922  *
 923  * The buffer is defined by (buffer_start, buffer_size) arguments and has the
 924  * following format:
 925  *
 926  *     [buffer_start + 0, buffer_start + 4):
 927  *         Write Pointer address (aka head). Written and updated by this
 928  *         routine when new data is written to the circular buffer.
 929  *     [buffer_start + 4, buffer_start + 8):
 930  *         Read Pointer address (aka tail). Updated by code running on the
 931  *         target after it consumes data.
 932  *     [buffer_start + 8, buffer_start + buffer_size):
 933  *         Circular buffer contents.
 934  *
 935  * See contrib/loaders/flash/stm32f1x.S for an example.
 936  *
 937  * @param target used to run the algorithm
 938  * @param buffer address on the host where data to be sent is located
 939  * @param count number of blocks to send
 940  * @param block_size size in bytes of each block
 941  * @param num_mem_params count of memory-based params to pass to algorithm
 942  * @param mem_params memory-based params to pass to algorithm
 943  * @param num_reg_params count of register-based params to pass to algorithm
 944  * @param reg_params memory-based params to pass to algorithm
 945  * @param buffer_start address on the target of the circular buffer structure
 946  * @param buffer_size size of the circular buffer structure
 947  * @param entry_point address on the target to execute to start the algorithm
 948  * @param exit_point address at which to set a breakpoint to catch the
 949  *     end of the algorithm; can be 0 if target triggers a breakpoint itself
 950  */
 951
 952 int target_run_flash_async_algorithm(struct target *target,
 953                 const uint8_t *buffer, uint32_t count, int block_size,
 954                 int num_mem_params, struct mem_param *mem_params,
 955                 int num_reg_params, struct reg_param *reg_params,
 956                 uint32_t buffer_start, uint32_t buffer_size,
 957                 uint32_t entry_point, uint32_t exit_point, void *arch_info)
 958 {
 959         int retval;
 960         int timeout = 0;
 961
 962         const uint8_t *buffer_orig = buffer;
 963
 964         /* Set up working area. First word is write pointer, second word is read pointer,
 965          * rest is fifo data area. */
 966         uint32_t wp_addr = buffer_start;
 967         uint32_t rp_addr = buffer_start + 4;
 968         uint32_t fifo_start_addr = buffer_start + 8;
 969         uint32_t fifo_end_addr = buffer_start + buffer_size;
 970
 971         uint32_t wp = fifo_start_addr;
 972         uint32_t rp = fifo_start_addr;
 973
 974         /* validate block_size is 2^n */
 975         assert(!block_size || !(block_size & (block_size - 1)));
 976
 977         retval = target_write_u32(target, wp_addr, wp);
 978         if (retval != ERROR_OK)
 979                 return retval;
 980         retval = target_write_u32(target, rp_addr, rp);
 981         if (retval != ERROR_OK)
 982                 return retval;
 983
 984         /* Start up algorithm on target and let it idle while writing the first chunk */
 985         retval = target_start_algorithm(target, num_mem_params, mem_params,
 986                         num_reg_params, reg_params,
 987                         entry_point,
 988                         exit_point,
 989                         arch_info);
 990
 991         if (retval != ERROR_OK) {
 992                 LOG_ERROR("error starting target flash write algorithm");
 993                 return retval;
 994         }
 995
 996         while (count > 0) {
 997
 998                 retval = target_read_u32(target, rp_addr, &rp);
 999                 if (retval != ERROR_OK) {
1000                         LOG_ERROR("failed to get read pointer");
1001                         break;
1002                 }
1003
1004                 LOG_DEBUG("offs 0x%zx count 0x%" PRIx32 " wp 0x%" PRIx32 " rp 0x%" PRIx32,
1005                         (size_t) (buffer - buffer_orig), count, wp, rp);
1006
1007                 if (rp == 0) {
1008                         LOG_ERROR("flash write algorithm aborted by target");
1009                         retval = ERROR_FLASH_OPERATION_FAILED;
1010                         break;
1011                 }
1012
1013                 if (((rp - fifo_start_addr) & (block_size - 1)) || rp < fifo_start_addr || rp >= fifo_end_addr) {
1014                         LOG_ERROR("corrupted fifo read pointer 0x%" PRIx32, rp);
1015                         break;
1016                 }
1017
1018                 /* Count the number of bytes available in the fifo without
1019                  * crossing the wrap around. Make sure to not fill it completely,
1020                  * because that would make wp == rp and that's the empty condition. */
1021                 uint32_t thisrun_bytes;
1022                 if (rp > wp)
1023                         thisrun_bytes = rp - wp - block_size;
1024                 else if (rp > fifo_start_addr)
1025                         thisrun_bytes = fifo_end_addr - wp;
1026                 else
1027                         thisrun_bytes = fifo_end_addr - wp - block_size;
1028
1029                 if (thisrun_bytes == 0) {
1030                         /* Throttle polling a bit if transfer is (much) faster than flash
1031                          * programming. The exact delay shouldn't matter as long as it's
1032                          * less than buffer size / flash speed. This is very unlikely to
1033                          * run when using high latency connections such as USB. */
1034                         alive_sleep(2);
1035
1036                         /* to stop an infinite loop on some targets check and increment a timeout
1037                          * this issue was observed on a stellaris using the new ICDI interface */
1038                         if (timeout++ >= 2500) {
1039                                 LOG_ERROR("timeout waiting for algorithm, a target reset is recommended");
1040                                 return ERROR_FLASH_OPERATION_FAILED;
1041                         }
1042                         continue;
1043                 }
1044
1045                 /* reset our timeout */
1046                 timeout = 0;
1047
1048                 /* Limit to the amount of data we actually want to write */
1049                 if (thisrun_bytes > count * block_size)
1050                         thisrun_bytes = count * block_size;
1051
1052                 /* Force end of large blocks to be word aligned */
1053                 if (thisrun_bytes >= 16)
1054                         thisrun_bytes -= (rp + thisrun_bytes) & 0x03;
1055
1056                 /* Write data to fifo */
1057                 retval = target_write_buffer(target, wp, thisrun_bytes, buffer);
1058                 if (retval != ERROR_OK)
1059                         break;
1060
1061                 /* Update counters and wrap write pointer */
1062                 buffer += thisrun_bytes;
1063                 count -= thisrun_bytes / block_size;
1064                 wp += thisrun_bytes;
1065                 if (wp >= fifo_end_addr)
1066                         wp = fifo_start_addr;
1067
1068                 /* Store updated write pointer to target */
1069                 retval = target_write_u32(target, wp_addr, wp);
1070                 if (retval != ERROR_OK)
1071                         break;
1072
1073                 /* Avoid GDB timeouts */
1074                 keep_alive();
1075         }
1076
1077         if (retval != ERROR_OK) {
1078                 /* abort flash write algorithm on target */
1079                 target_write_u32(target, wp_addr, 0);
1080         }
1081
1082         int retval2 = target_wait_algorithm(target, num_mem_params, mem_params,
1083                         num_reg_params, reg_params,
1084                         exit_point,
1085                         10000,
1086                         arch_info);
1087
1088         if (retval2 != ERROR_OK) {
1089                 LOG_ERROR("error waiting for target flash write algorithm");
1090                 retval = retval2;
1091         }
1092
1093         if (retval == ERROR_OK) {
1094                 /* check if algorithm set rp = 0 after fifo writer loop finished */
1095                 retval = target_read_u32(target, rp_addr, &rp);
1096                 if (retval == ERROR_OK && rp == 0) {
1097                         LOG_ERROR("flash write algorithm aborted by target");
1098                         retval = ERROR_FLASH_OPERATION_FAILED;
1099                 }
1100         }
1101
1102         return retval;
1103 }
1104
1105 int target_run_read_async_algorithm(struct target *target,
1106                 uint8_t *buffer, uint32_t count, int block_size,
1107                 int num_mem_params, struct mem_param *mem_params,
1108                 int num_reg_params, struct reg_param *reg_params,
1109                 uint32_t buffer_start, uint32_t buffer_size,
1110                 uint32_t entry_point, uint32_t exit_point, void *arch_info)
1111 {
1112         int retval;
1113         int timeout = 0;
1114
1115         const uint8_t *buffer_orig = buffer;
1116
1117         /* Set up working area. First word is write pointer, second word is read pointer,
1118          * rest is fifo data area. */
1119         uint32_t wp_addr = buffer_start;
1120         uint32_t rp_addr = buffer_start + 4;
1121         uint32_t fifo_start_addr = buffer_start + 8;
1122         uint32_t fifo_end_addr = buffer_start + buffer_size;
1123
1124         uint32_t wp = fifo_start_addr;
1125         uint32_t rp = fifo_start_addr;
1126
1127         /* validate block_size is 2^n */
1128         assert(!block_size || !(block_size & (block_size - 1)));
1129
1130         retval = target_write_u32(target, wp_addr, wp);
1131         if (retval != ERROR_OK)
1132                 return retval;
1133         retval = target_write_u32(target, rp_addr, rp);
1134         if (retval != ERROR_OK)
1135                 return retval;
1136
1137         /* Start up algorithm on target */
1138         retval = target_start_algorithm(target, num_mem_params, mem_params,
1139                         num_reg_params, reg_params,
1140                         entry_point,
1141                         exit_point,
1142                         arch_info);
1143
1144         if (retval != ERROR_OK) {
1145                 LOG_ERROR("error starting target flash read algorithm");
1146                 return retval;
1147         }
1148
1149         while (count > 0) {
1150                 retval = target_read_u32(target, wp_addr, &wp);
1151                 if (retval != ERROR_OK) {
1152                         LOG_ERROR("failed to get write pointer");
1153                         break;
1154                 }
1155
1156                 LOG_DEBUG("offs 0x%zx count 0x%" PRIx32 " wp 0x%" PRIx32 " rp 0x%" PRIx32,
1157                         (size_t) (buffer - buffer_orig), count, wp, rp);
1158
1159                 if (wp == 0) {
1160                         LOG_ERROR("flash read algorithm aborted by target");
1161                         retval = ERROR_FLASH_OPERATION_FAILED;
1162                         break;
1163                 }
1164
1165                 if (((wp - fifo_start_addr) & (block_size - 1)) || wp < fifo_start_addr || wp >= fifo_end_addr) {
1166                         LOG_ERROR("corrupted fifo write pointer 0x%" PRIx32, wp);
1167                         break;
1168                 }
1169
1170                 /* Count the number of bytes available in the fifo without
1171                  * crossing the wrap around. */
1172                 uint32_t thisrun_bytes;
1173                 if (wp >= rp)
1174                         thisrun_bytes = wp - rp;
1175                 else
1176                         thisrun_bytes = fifo_end_addr - rp;
1177
1178                 if (thisrun_bytes == 0) {
1179                         /* Throttle polling a bit if transfer is (much) faster than flash
1180                          * reading. The exact delay shouldn't matter as long as it's
1181                          * less than buffer size / flash speed. This is very unlikely to
1182                          * run when using high latency connections such as USB. */
1183                         alive_sleep(2);
1184
1185                         /* to stop an infinite loop on some targets check and increment a timeout
1186                          * this issue was observed on a stellaris using the new ICDI interface */
1187                         if (timeout++ >= 2500) {
1188                                 LOG_ERROR("timeout waiting for algorithm, a target reset is recommended");
1189                                 return ERROR_FLASH_OPERATION_FAILED;
1190                         }
1191                         continue;
1192                 }
1193
1194                 /* Reset our timeout */
1195                 timeout = 0;
1196
1197                 /* Limit to the amount of data we actually want to read */
1198                 if (thisrun_bytes > count * block_size)
1199                         thisrun_bytes = count * block_size;
1200
1201                 /* Force end of large blocks to be word aligned */
1202                 if (thisrun_bytes >= 16)
1203                         thisrun_bytes -= (rp + thisrun_bytes) & 0x03;
1204
1205                 /* Read data from fifo */
1206                 retval = target_read_buffer(target, rp, thisrun_bytes, buffer);
1207                 if (retval != ERROR_OK)
1208                         break;
1209
1210                 /* Update counters and wrap write pointer */
1211                 buffer += thisrun_bytes;
1212                 count -= thisrun_bytes / block_size;
1213                 rp += thisrun_bytes;
1214                 if (rp >= fifo_end_addr)
1215                         rp = fifo_start_addr;
1216
1217                 /* Store updated write pointer to target */
1218                 retval = target_write_u32(target, rp_addr, rp);
1219                 if (retval != ERROR_OK)
1220                         break;
1221
1222                 /* Avoid GDB timeouts */
1223                 keep_alive();
1224
1225         }
1226
1227         if (retval != ERROR_OK) {
1228                 /* abort flash write algorithm on target */
1229                 target_write_u32(target, rp_addr, 0);
1230         }
1231
1232         int retval2 = target_wait_algorithm(target, num_mem_params, mem_params,
1233                         num_reg_params, reg_params,
1234                         exit_point,
1235                         10000,
1236                         arch_info);
1237
1238         if (retval2 != ERROR_OK) {
1239                 LOG_ERROR("error waiting for target flash write algorithm");
1240                 retval = retval2;
1241         }
1242
1243         if (retval == ERROR_OK) {
1244                 /* check if algorithm set wp = 0 after fifo writer loop finished */
1245                 retval = target_read_u32(target, wp_addr, &wp);
1246                 if (retval == ERROR_OK && wp == 0) {
1247                         LOG_ERROR("flash read algorithm aborted by target");
1248                         retval = ERROR_FLASH_OPERATION_FAILED;
1249                 }
1250         }
1251
1252         return retval;
1253 }
1254
1255 int target_read_memory(struct target *target,
1256                 target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer)
1257 {
1258         if (!target_was_examined(target)) {
1259                 LOG_ERROR("Target not examined yet");
1260                 return ERROR_FAIL;
1261         }
1262         if (!target->type->read_memory) {
1263                 LOG_ERROR("Target %s doesn't support read_memory", target_name(target));
1264                 return ERROR_FAIL;
1265         }
1266         return target->type->read_memory(target, address, size, count, buffer);
1267 }
1268
1269 int target_read_phys_memory(struct target *target,
1270                 target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer)
1271 {
1272         if (!target_was_examined(target)) {
1273                 LOG_ERROR("Target not examined yet");
1274                 return ERROR_FAIL;
1275         }
1276         if (!target->type->read_phys_memory) {
1277                 LOG_ERROR("Target %s doesn't support read_phys_memory", target_name(target));
1278                 return ERROR_FAIL;
1279         }
1280         return target->type->read_phys_memory(target, address, size, count, buffer);
1281 }
1282
1283 int target_write_memory(struct target *target,
1284                 target_addr_t address, uint32_t size, uint32_t count, const uint8_t *buffer)
1285 {
1286         if (!target_was_examined(target)) {
1287                 LOG_ERROR("Target not examined yet");
1288                 return ERROR_FAIL;
1289         }
1290         if (!target->type->write_memory) {
1291                 LOG_ERROR("Target %s doesn't support write_memory", target_name(target));
1292                 return ERROR_FAIL;
1293         }
1294         return target->type->write_memory(target, address, size, count, buffer);
1295 }
1296
1297 int target_write_phys_memory(struct target *target,
1298                 target_addr_t address, uint32_t size, uint32_t count, const uint8_t *buffer)
1299 {
1300         if (!target_was_examined(target)) {
1301                 LOG_ERROR("Target not examined yet");
1302                 return ERROR_FAIL;
1303         }
1304         if (!target->type->write_phys_memory) {
1305                 LOG_ERROR("Target %s doesn't support write_phys_memory", target_name(target));
1306                 return ERROR_FAIL;
1307         }
1308         return target->type->write_phys_memory(target, address, size, count, buffer);
1309 }
1310
1311 int target_add_breakpoint(struct target *target,
1312                 struct breakpoint *breakpoint)
1313 {
1314         if ((target->state != TARGET_HALTED) && (breakpoint->type != BKPT_HARD)) {
1315                 LOG_WARNING("target %s is not halted (add breakpoint)", target_name(target));
1316                 return ERROR_TARGET_NOT_HALTED;
1317         }
1318         return target->type->add_breakpoint(target, breakpoint);
1319 }
1320
1321 int target_add_context_breakpoint(struct target *target,
1322                 struct breakpoint *breakpoint)
1323 {
1324         if (target->state != TARGET_HALTED) {
1325                 LOG_WARNING("target %s is not halted (add context breakpoint)", target_name(target));
1326                 return ERROR_TARGET_NOT_HALTED;
1327         }
1328         return target->type->add_context_breakpoint(target, breakpoint);
1329 }
1330
1331 int target_add_hybrid_breakpoint(struct target *target,
1332                 struct breakpoint *breakpoint)
1333 {
1334         if (target->state != TARGET_HALTED) {
1335                 LOG_WARNING("target %s is not halted (add hybrid breakpoint)", target_name(target));
1336                 return ERROR_TARGET_NOT_HALTED;
1337         }
1338         return target->type->add_hybrid_breakpoint(target, breakpoint);
1339 }
1340
1341 int target_remove_breakpoint(struct target *target,
1342                 struct breakpoint *breakpoint)
1343 {
1344         return target->type->remove_breakpoint(target, breakpoint);
1345 }
1346
1347 int target_add_watchpoint(struct target *target,
1348                 struct watchpoint *watchpoint)
1349 {
1350         if (target->state != TARGET_HALTED) {
1351                 LOG_WARNING("target %s is not halted (add watchpoint)", target_name(target));
1352                 return ERROR_TARGET_NOT_HALTED;
1353         }
1354         return target->type->add_watchpoint(target, watchpoint);
1355 }
1356 int target_remove_watchpoint(struct target *target,
1357                 struct watchpoint *watchpoint)
1358 {
1359         return target->type->remove_watchpoint(target, watchpoint);
1360 }
1361 int target_hit_watchpoint(struct target *target,
1362                 struct watchpoint **hit_watchpoint)
1363 {
1364         if (target->state != TARGET_HALTED) {
1365                 LOG_WARNING("target %s is not halted (hit watchpoint)", target->cmd_name);
1366                 return ERROR_TARGET_NOT_HALTED;
1367         }
1368
1369         if (target->type->hit_watchpoint == NULL) {
1370                 /* For backward compatible, if hit_watchpoint is not implemented,
1371                  * return ERROR_FAIL such that gdb_server will not take the nonsense
1372                  * information. */
1373                 return ERROR_FAIL;
1374         }
1375
1376         return target->type->hit_watchpoint(target, hit_watchpoint);
1377 }
1378
1379 const char *target_get_gdb_arch(struct target *target)
1380 {
1381         if (target->type->get_gdb_arch == NULL)
1382                 return NULL;
1383         return target->type->get_gdb_arch(target);
1384 }
1385
1386 int target_get_gdb_reg_list(struct target *target,
1387                 struct reg **reg_list[], int *reg_list_size,
1388                 enum target_register_class reg_class)
1389 {
1390         int result = ERROR_FAIL;
1391
1392         if (!target_was_examined(target)) {
1393                 LOG_ERROR("Target not examined yet");
1394                 goto done;
1395         }
1396
1397         result = target->type->get_gdb_reg_list(target, reg_list,
1398                         reg_list_size, reg_class);
1399
1400 done:
1401         if (result != ERROR_OK) {
1402                 *reg_list = NULL;
1403                 *reg_list_size = 0;
1404         }
1405         return result;
1406 }
1407
1408 int target_get_gdb_reg_list_noread(struct target *target,
1409                 struct reg **reg_list[], int *reg_list_size,
1410                 enum target_register_class reg_class)
1411 {
1412         if (target->type->get_gdb_reg_list_noread &&
1413                         target->type->get_gdb_reg_list_noread(target, reg_list,
1414                                 reg_list_size, reg_class) == ERROR_OK)
1415                 return ERROR_OK;
1416         return target_get_gdb_reg_list(target, reg_list, reg_list_size, reg_class);
1417 }
1418
1419 bool target_supports_gdb_connection(struct target *target)
1420 {
1421         /*
1422          * exclude all the targets that don't provide get_gdb_reg_list
1423          * or that have explicit gdb_max_connection == 0
1424          */
1425         return !!target->type->get_gdb_reg_list && !!target->gdb_max_connections;
1426 }
1427
1428 int target_step(struct target *target,
1429                 int current, target_addr_t address, int handle_breakpoints)
1430 {
1431         int retval;
1432
1433         target_call_event_callbacks(target, TARGET_EVENT_STEP_START);
1434
1435         retval = target->type->step(target, current, address, handle_breakpoints);
1436         if (retval != ERROR_OK)
1437                 return retval;
1438
1439         target_call_event_callbacks(target, TARGET_EVENT_STEP_END);
1440
1441         return retval;
1442 }
1443
1444 int target_get_gdb_fileio_info(struct target *target, struct gdb_fileio_info *fileio_info)
1445 {
1446         if (target->state != TARGET_HALTED) {
1447                 LOG_WARNING("target %s is not halted (gdb fileio)", target->cmd_name);
1448                 return ERROR_TARGET_NOT_HALTED;
1449         }
1450         return target->type->get_gdb_fileio_info(target, fileio_info);
1451 }
1452
1453 int target_gdb_fileio_end(struct target *target, int retcode, int fileio_errno, bool ctrl_c)
1454 {
1455         if (target->state != TARGET_HALTED) {
1456                 LOG_WARNING("target %s is not halted (gdb fileio end)", target->cmd_name);
1457                 return ERROR_TARGET_NOT_HALTED;
1458         }
1459         return target->type->gdb_fileio_end(target, retcode, fileio_errno, ctrl_c);
1460 }
1461
1462 target_addr_t target_address_max(struct target *target)
1463 {
1464         unsigned bits = target_address_bits(target);
1465         if (sizeof(target_addr_t) * 8 == bits)
1466                 return (target_addr_t) -1;
1467         else
1468                 return (((target_addr_t) 1) << bits) - 1;
1469 }
1470
1471 unsigned target_address_bits(struct target *target)
1472 {
1473         if (target->type->address_bits)
1474                 return target->type->address_bits(target);
1475         return 32;
1476 }
1477
1478 static int target_profiling(struct target *target, uint32_t *samples,
1479                         uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
1480 {
1481         return target->type->profiling(target, samples, max_num_samples,
1482                         num_samples, seconds);
1483 }
1484
1485 /**
1486  * Reset the @c examined flag for the given target.
1487  * Pure paranoia -- targets are zeroed on allocation.
1488  */
1489 static void target_reset_examined(struct target *target)
1490 {
1491         target->examined = false;
1492 }
1493
1494 static int handle_target(void *priv);
1495
1496 static int target_init_one(struct command_context *cmd_ctx,
1497                 struct target *target)
1498 {
1499         target_reset_examined(target);
1500
1501         struct target_type *type = target->type;
1502         if (type->examine == NULL)
1503                 type->examine = default_examine;
1504
1505         if (type->check_reset == NULL)
1506                 type->check_reset = default_check_reset;
1507
1508         assert(type->init_target != NULL);
1509
1510         int retval = type->init_target(cmd_ctx, target);
1511         if (ERROR_OK != retval) {
1512                 LOG_ERROR("target '%s' init failed", target_name(target));
1513                 return retval;
1514         }
1515
1516         /* Sanity-check MMU support ... stub in what we must, to help
1517          * implement it in stages, but warn if we need to do so.
1518          */
1519         if (type->mmu) {
1520                 if (type->virt2phys == NULL) {
1521                         LOG_ERROR("type '%s' is missing virt2phys", type->name);
1522                         type->virt2phys = identity_virt2phys;
1523                 }
1524         } else {
1525                 /* Make sure no-MMU targets all behave the same:  make no
1526                  * distinction between physical and virtual addresses, and
1527                  * ensure that virt2phys() is always an identity mapping.
1528                  */
1529                 if (type->write_phys_memory || type->read_phys_memory || type->virt2phys)
1530                         LOG_WARNING("type '%s' has bad MMU hooks", type->name);
1531
1532                 type->mmu = no_mmu;
1533                 type->write_phys_memory = type->write_memory;
1534                 type->read_phys_memory = type->read_memory;
1535                 type->virt2phys = identity_virt2phys;
1536         }
1537
1538         if (target->type->read_buffer == NULL)
1539                 target->type->read_buffer = target_read_buffer_default;
1540
1541         if (target->type->write_buffer == NULL)
1542                 target->type->write_buffer = target_write_buffer_default;
1543
1544         if (target->type->get_gdb_fileio_info == NULL)
1545                 target->type->get_gdb_fileio_info = target_get_gdb_fileio_info_default;
1546
1547         if (target->type->gdb_fileio_end == NULL)
1548                 target->type->gdb_fileio_end = target_gdb_fileio_end_default;
1549
1550         if (target->type->profiling == NULL)
1551                 target->type->profiling = target_profiling_default;
1552
1553         return ERROR_OK;
1554 }
1555
1556 static int target_init(struct command_context *cmd_ctx)
1557 {
1558         struct target *target;
1559         int retval;
1560
1561         for (target = all_targets; target; target = target->next) {
1562                 retval = target_init_one(cmd_ctx, target);
1563                 if (ERROR_OK != retval)
1564                         return retval;
1565         }
1566
1567         if (!all_targets)
1568                 return ERROR_OK;
1569
1570         retval = target_register_user_commands(cmd_ctx);
1571         if (ERROR_OK != retval)
1572                 return retval;
1573
1574         retval = target_register_timer_callback(&handle_target,
1575                         polling_interval, TARGET_TIMER_TYPE_PERIODIC, cmd_ctx->interp);
1576         if (ERROR_OK != retval)
1577                 return retval;
1578
1579         return ERROR_OK;
1580 }
1581
1582 COMMAND_HANDLER(handle_target_init_command)
1583 {
1584         int retval;
1585
1586         if (CMD_ARGC != 0)
1587                 return ERROR_COMMAND_SYNTAX_ERROR;
1588
1589         static bool target_initialized;
1590         if (target_initialized) {
1591                 LOG_INFO("'target init' has already been called");
1592                 return ERROR_OK;
1593         }
1594         target_initialized = true;
1595
1596         retval = command_run_line(CMD_CTX, "init_targets");
1597         if (ERROR_OK != retval)
1598                 return retval;
1599
1600         retval = command_run_line(CMD_CTX, "init_target_events");
1601         if (ERROR_OK != retval)
1602                 return retval;
1603
1604         retval = command_run_line(CMD_CTX, "init_board");
1605         if (ERROR_OK != retval)
1606                 return retval;
1607
1608         LOG_DEBUG("Initializing targets...");
1609         return target_init(CMD_CTX);
1610 }
1611
1612 int target_register_event_callback(int (*callback)(struct target *target,
1613                 enum target_event event, void *priv), void *priv)
1614 {
1615         struct target_event_callback **callbacks_p = &target_event_callbacks;
1616
1617         if (callback == NULL)
1618                 return ERROR_COMMAND_SYNTAX_ERROR;
1619
1620         if (*callbacks_p) {
1621                 while ((*callbacks_p)->next)
1622                         callbacks_p = &((*callbacks_p)->next);
1623                 callbacks_p = &((*callbacks_p)->next);
1624         }
1625
1626         (*callbacks_p) = malloc(sizeof(struct target_event_callback));
1627         (*callbacks_p)->callback = callback;
1628         (*callbacks_p)->priv = priv;
1629         (*callbacks_p)->next = NULL;
1630
1631         return ERROR_OK;
1632 }
1633
1634 int target_register_reset_callback(int (*callback)(struct target *target,
1635                 enum target_reset_mode reset_mode, void *priv), void *priv)
1636 {
1637         struct target_reset_callback *entry;
1638
1639         if (callback == NULL)
1640                 return ERROR_COMMAND_SYNTAX_ERROR;
1641
1642         entry = malloc(sizeof(struct target_reset_callback));
1643         if (entry == NULL) {
1644                 LOG_ERROR("error allocating buffer for reset callback entry");
1645                 return ERROR_COMMAND_SYNTAX_ERROR;
1646         }
1647
1648         entry->callback = callback;
1649         entry->priv = priv;
1650         list_add(&entry->list, &target_reset_callback_list);
1651
1652
1653         return ERROR_OK;
1654 }
1655
1656 int target_register_trace_callback(int (*callback)(struct target *target,
1657                 size_t len, uint8_t *data, void *priv), void *priv)
1658 {
1659         struct target_trace_callback *entry;
1660
1661         if (callback == NULL)
1662                 return ERROR_COMMAND_SYNTAX_ERROR;
1663
1664         entry = malloc(sizeof(struct target_trace_callback));
1665         if (entry == NULL) {
1666                 LOG_ERROR("error allocating buffer for trace callback entry");
1667                 return ERROR_COMMAND_SYNTAX_ERROR;
1668         }
1669
1670         entry->callback = callback;
1671         entry->priv = priv;
1672         list_add(&entry->list, &target_trace_callback_list);
1673
1674
1675         return ERROR_OK;
1676 }
1677
1678 int target_register_timer_callback(int (*callback)(void *priv),
1679                 unsigned int time_ms, enum target_timer_type type, void *priv)
1680 {
1681         struct target_timer_callback **callbacks_p = &target_timer_callbacks;
1682
1683         if (callback == NULL)
1684                 return ERROR_COMMAND_SYNTAX_ERROR;
1685
1686         if (*callbacks_p) {
1687                 while ((*callbacks_p)->next)
1688                         callbacks_p = &((*callbacks_p)->next);
1689                 callbacks_p = &((*callbacks_p)->next);
1690         }
1691
1692         (*callbacks_p) = malloc(sizeof(struct target_timer_callback));
1693         (*callbacks_p)->callback = callback;
1694         (*callbacks_p)->type = type;
1695         (*callbacks_p)->time_ms = time_ms;
1696         (*callbacks_p)->removed = false;
1697
1698         gettimeofday(&(*callbacks_p)->when, NULL);
1699         timeval_add_time(&(*callbacks_p)->when, 0, time_ms * 1000);
1700
1701         (*callbacks_p)->priv = priv;
1702         (*callbacks_p)->next = NULL;
1703
1704         return ERROR_OK;
1705 }
1706
1707 int target_unregister_event_callback(int (*callback)(struct target *target,
1708                 enum target_event event, void *priv), void *priv)
1709 {
1710         struct target_event_callback **p = &target_event_callbacks;
1711         struct target_event_callback *c = target_event_callbacks;
1712
1713         if (callback == NULL)
1714                 return ERROR_COMMAND_SYNTAX_ERROR;
1715
1716         while (c) {
1717                 struct target_event_callback *next = c->next;
1718                 if ((c->callback == callback) && (c->priv == priv)) {
1719                         *p = next;
1720                         free(c);
1721                         return ERROR_OK;
1722                 } else
1723                         p = &(c->next);
1724                 c = next;
1725         }
1726
1727         return ERROR_OK;
1728 }
1729
1730 int target_unregister_reset_callback(int (*callback)(struct target *target,
1731                 enum target_reset_mode reset_mode, void *priv), void *priv)
1732 {
1733         struct target_reset_callback *entry;
1734
1735         if (callback == NULL)
1736                 return ERROR_COMMAND_SYNTAX_ERROR;
1737
1738         list_for_each_entry(entry, &target_reset_callback_list, list) {
1739                 if (entry->callback == callback && entry->priv == priv) {
1740                         list_del(&entry->list);
1741                         free(entry);
1742                         break;
1743                 }
1744         }
1745
1746         return ERROR_OK;
1747 }
1748
1749 int target_unregister_trace_callback(int (*callback)(struct target *target,
1750                 size_t len, uint8_t *data, void *priv), void *priv)
1751 {
1752         struct target_trace_callback *entry;
1753
1754         if (callback == NULL)
1755                 return ERROR_COMMAND_SYNTAX_ERROR;
1756
1757         list_for_each_entry(entry, &target_trace_callback_list, list) {
1758                 if (entry->callback == callback && entry->priv == priv) {
1759                         list_del(&entry->list);
1760                         free(entry);
1761                         break;
1762                 }
1763         }
1764
1765         return ERROR_OK;
1766 }
1767
1768 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
1769 {
1770         if (callback == NULL)
1771                 return ERROR_COMMAND_SYNTAX_ERROR;
1772
1773         for (struct target_timer_callback *c = target_timer_callbacks;
1774              c; c = c->next) {
1775                 if ((c->callback == callback) && (c->priv == priv)) {
1776                         c->removed = true;
1777                         return ERROR_OK;
1778                 }
1779         }
1780
1781         return ERROR_FAIL;
1782 }
1783
1784 int target_call_event_callbacks(struct target *target, enum target_event event)
1785 {
1786         struct target_event_callback *callback = target_event_callbacks;
1787         struct target_event_callback *next_callback;
1788
1789         if (event == TARGET_EVENT_HALTED) {
1790                 /* execute early halted first */
1791                 target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
1792         }
1793
1794         LOG_DEBUG("target event %i (%s) for core %s", event,
1795                         Jim_Nvp_value2name_simple(nvp_target_event, event)->name,
1796                         target_name(target));
1797
1798         target_handle_event(target, event);
1799
1800         while (callback) {
1801                 next_callback = callback->next;
1802                 callback->callback(target, event, callback->priv);
1803                 callback = next_callback;
1804         }
1805
1806         return ERROR_OK;
1807 }
1808
1809 int target_call_reset_callbacks(struct target *target, enum target_reset_mode reset_mode)
1810 {
1811         struct target_reset_callback *callback;
1812
1813         LOG_DEBUG("target reset %i (%s)", reset_mode,
1814                         Jim_Nvp_value2name_simple(nvp_reset_modes, reset_mode)->name);
1815
1816         list_for_each_entry(callback, &target_reset_callback_list, list)
1817                 callback->callback(target, reset_mode, callback->priv);
1818
1819         return ERROR_OK;
1820 }
1821
1822 int target_call_trace_callbacks(struct target *target, size_t len, uint8_t *data)
1823 {
1824         struct target_trace_callback *callback;
1825
1826         list_for_each_entry(callback, &target_trace_callback_list, list)
1827                 callback->callback(target, len, data, callback->priv);
1828
1829         return ERROR_OK;
1830 }
1831
1832 static int target_timer_callback_periodic_restart(
1833                 struct target_timer_callback *cb, struct timeval *now)
1834 {
1835         cb->when = *now;
1836         timeval_add_time(&cb->when, 0, cb->time_ms * 1000L);
1837         return ERROR_OK;
1838 }
1839
1840 static int target_call_timer_callback(struct target_timer_callback *cb,
1841                 struct timeval *now)
1842 {
1843         cb->callback(cb->priv);
1844
1845         if (cb->type == TARGET_TIMER_TYPE_PERIODIC)
1846                 return target_timer_callback_periodic_restart(cb, now);
1847
1848         return target_unregister_timer_callback(cb->callback, cb->priv);
1849 }
1850
1851 static int target_call_timer_callbacks_check_time(int checktime)
1852 {
1853         static bool callback_processing;
1854
1855         /* Do not allow nesting */
1856         if (callback_processing)
1857                 return ERROR_OK;
1858
1859         callback_processing = true;
1860
1861         keep_alive();
1862
1863         struct timeval now;
1864         gettimeofday(&now, NULL);
1865
1866         /* Store an address of the place containing a pointer to the
1867          * next item; initially, that's a standalone "root of the
1868          * list" variable. */
1869         struct target_timer_callback **callback = &target_timer_callbacks;
1870         while (callback && *callback) {
1871                 if ((*callback)->removed) {
1872                         struct target_timer_callback *p = *callback;
1873                         *callback = (*callback)->next;
1874                         free(p);
1875                         continue;
1876                 }
1877
1878                 bool call_it = (*callback)->callback &&
1879                         ((!checktime && (*callback)->type == TARGET_TIMER_TYPE_PERIODIC) ||
1880                          timeval_compare(&now, &(*callback)->when) >= 0);
1881
1882                 if (call_it)
1883                         target_call_timer_callback(*callback, &now);
1884
1885                 callback = &(*callback)->next;
1886         }
1887
1888         callback_processing = false;
1889         return ERROR_OK;
1890 }
1891
1892 int target_call_timer_callbacks(void)
1893 {
1894         return target_call_timer_callbacks_check_time(1);
1895 }
1896
1897 /* invoke periodic callbacks immediately */
1898 int target_call_timer_callbacks_now(void)
1899 {
1900         return target_call_timer_callbacks_check_time(0);
1901 }
1902
1903 /* Prints the working area layout for debug purposes */
1904 static void print_wa_layout(struct target *target)
1905 {
1906         struct working_area *c = target->working_areas;
1907
1908         while (c) {
1909                 LOG_DEBUG("%c%c " TARGET_ADDR_FMT "-" TARGET_ADDR_FMT " (%" PRIu32 " bytes)",
1910                         c->backup ? 'b' : ' ', c->free ? ' ' : '*',
1911                         c->address, c->address + c->size - 1, c->size);
1912                 c = c->next;
1913         }
1914 }
1915
1916 /* Reduce area to size bytes, create a new free area from the remaining bytes, if any. */
1917 static void target_split_working_area(struct working_area *area, uint32_t size)
1918 {
1919         assert(area->free); /* Shouldn't split an allocated area */
1920         assert(size <= area->size); /* Caller should guarantee this */
1921
1922         /* Split only if not already the right size */
1923         if (size < area->size) {
1924                 struct working_area *new_wa = malloc(sizeof(*new_wa));
1925
1926                 if (new_wa == NULL)
1927                         return;
1928
1929                 new_wa->next = area->next;
1930                 new_wa->size = area->size - size;
1931                 new_wa->address = area->address + size;
1932                 new_wa->backup = NULL;
1933                 new_wa->user = NULL;
1934                 new_wa->free = true;
1935
1936                 area->next = new_wa;
1937                 area->size = size;
1938
1939                 /* If backup memory was allocated to this area, it has the wrong size
1940                  * now so free it and it will be reallocated if/when needed */
1941                 free(area->backup);
1942                 area->backup = NULL;
1943         }
1944 }
1945
1946 /* Merge all adjacent free areas into one */
1947 static void target_merge_working_areas(struct target *target)
1948 {
1949         struct working_area *c = target->working_areas;
1950
1951         while (c && c->next) {
1952                 assert(c->next->address == c->address + c->size); /* This is an invariant */
1953
1954                 /* Find two adjacent free areas */
1955                 if (c->free && c->next->free) {
1956                         /* Merge the last into the first */
1957                         c->size += c->next->size;
1958
1959                         /* Remove the last */
1960                         struct working_area *to_be_freed = c->next;
1961                         c->next = c->next->next;
1962                         free(to_be_freed->backup);
1963                         free(to_be_freed);
1964
1965                         /* If backup memory was allocated to the remaining area, it's has
1966                          * the wrong size now */
1967                         free(c->backup);
1968                         c->backup = NULL;
1969                 } else {
1970                         c = c->next;
1971                 }
1972         }
1973 }
1974
1975 int target_alloc_working_area_try(struct target *target, uint32_t size, struct working_area **area)
1976 {
1977         /* Reevaluate working area address based on MMU state*/
1978         if (target->working_areas == NULL) {
1979                 int retval;
1980                 int enabled;
1981
1982                 retval = target->type->mmu(target, &enabled);
1983                 if (retval != ERROR_OK)
1984                         return retval;
1985
1986                 if (!enabled) {
1987                         if (target->working_area_phys_spec) {
1988                                 LOG_DEBUG("MMU disabled, using physical "
1989                                         "address for working memory " TARGET_ADDR_FMT,
1990                                         target->working_area_phys);
1991                                 target->working_area = target->working_area_phys;
1992                         } else {
1993                                 LOG_ERROR("No working memory available. "
1994                                         "Specify -work-area-phys to target.");
1995                                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1996                         }
1997                 } else {
1998                         if (target->working_area_virt_spec) {
1999                                 LOG_DEBUG("MMU enabled, using virtual "
2000                                         "address for working memory " TARGET_ADDR_FMT,
2001                                         target->working_area_virt);
2002                                 target->working_area = target->working_area_virt;
2003                         } else {
2004                                 LOG_ERROR("No working memory available. "
2005                                         "Specify -work-area-virt to target.");
2006                                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
2007                         }
2008                 }
2009
2010                 /* Set up initial working area on first call */
2011                 struct working_area *new_wa = malloc(sizeof(*new_wa));
2012                 if (new_wa) {
2013                         new_wa->next = NULL;
2014                         new_wa->size = target->working_area_size & ~3UL; /* 4-byte align */
2015                         new_wa->address = target->working_area;
2016                         new_wa->backup = NULL;
2017                         new_wa->user = NULL;
2018                         new_wa->free = true;
2019                 }
2020
2021                 target->working_areas = new_wa;
2022         }
2023
2024         /* only allocate multiples of 4 byte */
2025         if (size % 4)
2026                 size = (size + 3) & (~3UL);
2027
2028         struct working_area *c = target->working_areas;
2029
2030         /* Find the first large enough working area */
2031         while (c) {
2032                 if (c->free && c->size >= size)
2033                         break;
2034                 c = c->next;
2035         }
2036
2037         if (c == NULL)
2038                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
2039
2040         /* Split the working area into the requested size */
2041         target_split_working_area(c, size);
2042
2043         LOG_DEBUG("allocated new working area of %" PRIu32 " bytes at address " TARGET_ADDR_FMT,
2044                           size, c->address);
2045
2046         if (target->backup_working_area) {
2047                 if (c->backup == NULL) {
2048                         c->backup = malloc(c->size);
2049                         if (c->backup == NULL)
2050                                 return ERROR_FAIL;
2051                 }
2052
2053                 int retval = target_read_memory(target, c->address, 4, c->size / 4, c->backup);
2054                 if (retval != ERROR_OK)
2055                         return retval;
2056         }
2057
2058         /* mark as used, and return the new (reused) area */
2059         c->free = false;
2060         *area = c;
2061
2062         /* user pointer */
2063         c->user = area;
2064
2065         print_wa_layout(target);
2066
2067         return ERROR_OK;
2068 }
2069
2070 int target_alloc_working_area(struct target *target, uint32_t size, struct working_area **area)
2071 {
2072         int retval;
2073
2074         retval = target_alloc_working_area_try(target, size, area);
2075         if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
2076                 LOG_WARNING("not enough working area available(requested %"PRIu32")", size);
2077         return retval;
2078
2079 }
2080
2081 static int target_restore_working_area(struct target *target, struct working_area *area)
2082 {
2083         int retval = ERROR_OK;
2084
2085         if (target->backup_working_area && area->backup != NULL) {
2086                 retval = target_write_memory(target, area->address, 4, area->size / 4, area->backup);
2087                 if (retval != ERROR_OK)
2088                         LOG_ERROR("failed to restore %" PRIu32 " bytes of working area at address " TARGET_ADDR_FMT,
2089                                         area->size, area->address);
2090         }
2091
2092         return retval;
2093 }
2094
2095 /* Restore the area's backup memory, if any, and return the area to the allocation pool */
2096 static int target_free_working_area_restore(struct target *target, struct working_area *area, int restore)
2097 {
2098         int retval = ERROR_OK;
2099
2100         if (area->free)
2101                 return retval;
2102
2103         if (restore) {
2104                 retval = target_restore_working_area(target, area);
2105                 /* REVISIT: Perhaps the area should be freed even if restoring fails. */
2106                 if (retval != ERROR_OK)
2107                         return retval;
2108         }
2109
2110         area->free = true;
2111
2112         LOG_DEBUG("freed %" PRIu32 " bytes of working area at address " TARGET_ADDR_FMT,
2113                         area->size, area->address);
2114
2115         /* mark user pointer invalid */
2116         /* TODO: Is this really safe? It points to some previous caller's memory.
2117          * How could we know that the area pointer is still in that place and not
2118          * some other vital data? What's the purpose of this, anyway? */
2119         *area->user = NULL;
2120         area->user = NULL;
2121
2122         target_merge_working_areas(target);
2123
2124         print_wa_layout(target);
2125
2126         return retval;
2127 }
2128
2129 int target_free_working_area(struct target *target, struct working_area *area)
2130 {
2131         return target_free_working_area_restore(target, area, 1);
2132 }
2133
2134 /* free resources and restore memory, if restoring memory fails,
2135  * free up resources anyway
2136  */
2137 static void target_free_all_working_areas_restore(struct target *target, int restore)
2138 {
2139         struct working_area *c = target->working_areas;
2140
2141         LOG_DEBUG("freeing all working areas");
2142
2143         /* Loop through all areas, restoring the allocated ones and marking them as free */
2144         while (c) {
2145                 if (!c->free) {
2146                         if (restore)
2147                                 target_restore_working_area(target, c);
2148                         c->free = true;
2149                         *c->user = NULL; /* Same as above */
2150                         c->user = NULL;
2151                 }
2152                 c = c->next;
2153         }
2154
2155         /* Run a merge pass to combine all areas into one */
2156         target_merge_working_areas(target);
2157
2158         print_wa_layout(target);
2159 }
2160
2161 void target_free_all_working_areas(struct target *target)
2162 {
2163         target_free_all_working_areas_restore(target, 1);
2164
2165         /* Now we have none or only one working area marked as free */
2166         if (target->working_areas) {
2167                 /* Free the last one to allow on-the-fly moving and resizing */
2168                 free(target->working_areas->backup);
2169                 free(target->working_areas);
2170                 target->working_areas = NULL;
2171         }
2172 }
2173
2174 /* Find the largest number of bytes that can be allocated */
2175 uint32_t target_get_working_area_avail(struct target *target)
2176 {
2177         struct working_area *c = target->working_areas;
2178         uint32_t max_size = 0;
2179
2180         if (c == NULL)
2181                 return target->working_area_size;
2182
2183         while (c) {
2184                 if (c->free && max_size < c->size)
2185                         max_size = c->size;
2186
2187                 c = c->next;
2188         }
2189
2190         return max_size;
2191 }
2192
2193 static void target_destroy(struct target *target)
2194 {
2195         if (target->type->deinit_target)
2196                 target->type->deinit_target(target);
2197
2198         free(target->semihosting);
2199
2200         jtag_unregister_event_callback(jtag_enable_callback, target);
2201
2202         struct target_event_action *teap = target->event_action;
2203         while (teap) {
2204                 struct target_event_action *next = teap->next;
2205                 Jim_DecrRefCount(teap->interp, teap->body);
2206                 free(teap);
2207                 teap = next;
2208         }
2209
2210         target_free_all_working_areas(target);
2211
2212         /* release the targets SMP list */
2213         if (target->smp) {
2214                 struct target_list *head = target->head;
2215                 while (head != NULL) {
2216                         struct target_list *pos = head->next;
2217                         head->target->smp = 0;
2218                         free(head);
2219                         head = pos;
2220                 }
2221                 target->smp = 0;
2222         }
2223
2224         rtos_destroy(target);
2225
2226         free(target->gdb_port_override);
2227         free(target->type);
2228         free(target->trace_info);
2229         free(target->fileio_info);
2230         free(target->cmd_name);
2231         free(target);
2232 }
2233
2234 void target_quit(void)
2235 {
2236         struct target_event_callback *pe = target_event_callbacks;
2237         while (pe) {
2238                 struct target_event_callback *t = pe->next;
2239                 free(pe);
2240                 pe = t;
2241         }
2242         target_event_callbacks = NULL;
2243
2244         struct target_timer_callback *pt = target_timer_callbacks;
2245         while (pt) {
2246                 struct target_timer_callback *t = pt->next;
2247                 free(pt);
2248                 pt = t;
2249         }
2250         target_timer_callbacks = NULL;
2251
2252         for (struct target *target = all_targets; target;) {
2253                 struct target *tmp;
2254
2255                 tmp = target->next;
2256                 target_destroy(target);
2257                 target = tmp;
2258         }
2259
2260         all_targets = NULL;
2261 }
2262
2263 int target_arch_state(struct target *target)
2264 {
2265         int retval;
2266         if (target == NULL) {
2267                 LOG_WARNING("No target has been configured");
2268                 return ERROR_OK;
2269         }
2270
2271         if (target->state != TARGET_HALTED)
2272                 return ERROR_OK;
2273
2274         retval = target->type->arch_state(target);
2275         return retval;
2276 }
2277
2278 static int target_get_gdb_fileio_info_default(struct target *target,
2279                 struct gdb_fileio_info *fileio_info)
2280 {
2281         /* If target does not support semi-hosting function, target
2282            has no need to provide .get_gdb_fileio_info callback.
2283            It just return ERROR_FAIL and gdb_server will return "Txx"
2284            as target halted every time.  */
2285         return ERROR_FAIL;
2286 }
2287
2288 static int target_gdb_fileio_end_default(struct target *target,
2289                 int retcode, int fileio_errno, bool ctrl_c)
2290 {
2291         return ERROR_OK;
2292 }
2293
2294 int target_profiling_default(struct target *target, uint32_t *samples,
2295                 uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
2296 {
2297         struct timeval timeout, now;
2298
2299         gettimeofday(&timeout, NULL);
2300         timeval_add_time(&timeout, seconds, 0);
2301
2302         LOG_INFO("Starting profiling. Halting and resuming the"
2303                         " target as often as we can...");
2304
2305         uint32_t sample_count = 0;
2306         /* hopefully it is safe to cache! We want to stop/restart as quickly as possible. */
2307         struct reg *reg = register_get_by_name(target->reg_cache, "pc", 1);
2308
2309         int retval = ERROR_OK;
2310         for (;;) {
2311                 target_poll(target);
2312                 if (target->state == TARGET_HALTED) {
2313                         uint32_t t = buf_get_u32(reg->value, 0, 32);
2314                         samples[sample_count++] = t;
2315                         /* current pc, addr = 0, do not handle breakpoints, not debugging */
2316                         retval = target_resume(target, 1, 0, 0, 0);
2317                         target_poll(target);
2318                         alive_sleep(10); /* sleep 10ms, i.e. <100 samples/second. */
2319                 } else if (target->state == TARGET_RUNNING) {
2320                         /* We want to quickly sample the PC. */
2321                         retval = target_halt(target);
2322                 } else {
2323                         LOG_INFO("Target not halted or running");
2324                         retval = ERROR_OK;
2325                         break;
2326                 }
2327
2328                 if (retval != ERROR_OK)
2329                         break;
2330
2331                 gettimeofday(&now, NULL);
2332                 if ((sample_count >= max_num_samples) || timeval_compare(&now, &timeout) >= 0) {
2333                         LOG_INFO("Profiling completed. %" PRIu32 " samples.", sample_count);
2334                         break;
2335                 }
2336         }
2337
2338         *num_samples = sample_count;
2339         return retval;
2340 }
2341
2342 /* Single aligned words are guaranteed to use 16 or 32 bit access
2343  * mode respectively, otherwise data is handled as quickly as
2344  * possible
2345  */
2346 int target_write_buffer(struct target *target, target_addr_t address, uint32_t size, const uint8_t *buffer)
2347 {
2348         LOG_DEBUG("writing buffer of %" PRIu32 " byte at " TARGET_ADDR_FMT,
2349                           size, address);
2350
2351         if (!target_was_examined(target)) {
2352                 LOG_ERROR("Target not examined yet");
2353                 return ERROR_FAIL;
2354         }
2355
2356         if (size == 0)
2357                 return ERROR_OK;
2358
2359         if ((address + size - 1) < address) {
2360                 /* GDB can request this when e.g. PC is 0xfffffffc */
2361                 LOG_ERROR("address + size wrapped (" TARGET_ADDR_FMT ", 0x%08" PRIx32 ")",
2362                                   address,
2363                                   size);
2364                 return ERROR_FAIL;
2365         }
2366
2367         return target->type->write_buffer(target, address, size, buffer);
2368 }
2369
2370 static int target_write_buffer_default(struct target *target,
2371         target_addr_t address, uint32_t count, const uint8_t *buffer)
2372 {
2373         uint32_t size;
2374
2375         /* Align up to maximum 4 bytes. The loop condition makes sure the next pass
2376          * will have something to do with the size we leave to it. */
2377         for (size = 1; size < 4 && count >= size * 2 + (address & size); size *= 2) {
2378                 if (address & size) {
2379                         int retval = target_write_memory(target, address, size, 1, buffer);
2380                         if (retval != ERROR_OK)
2381                                 return retval;
2382                         address += size;
2383                         count -= size;
2384                         buffer += size;
2385                 }
2386         }
2387
2388         /* Write the data with as large access size as possible. */
2389         for (; size > 0; size /= 2) {
2390                 uint32_t aligned = count - count % size;
2391                 if (aligned > 0) {
2392                         int retval = target_write_memory(target, address, size, aligned / size, buffer);
2393                         if (retval != ERROR_OK)
2394                                 return retval;
2395                         address += aligned;
2396                         count -= aligned;
2397                         buffer += aligned;
2398                 }
2399         }
2400
2401         return ERROR_OK;
2402 }
2403
2404 /* Single aligned words are guaranteed to use 16 or 32 bit access
2405  * mode respectively, otherwise data is handled as quickly as
2406  * possible
2407  */
2408 int target_read_buffer(struct target *target, target_addr_t address, uint32_t size, uint8_t *buffer)
2409 {
2410         LOG_DEBUG("reading buffer of %" PRIu32 " byte at " TARGET_ADDR_FMT,
2411                           size, address);
2412
2413         if (!target_was_examined(target)) {
2414                 LOG_ERROR("Target not examined yet");
2415                 return ERROR_FAIL;
2416         }
2417
2418         if (size == 0)
2419                 return ERROR_OK;
2420
2421         if ((address + size - 1) < address) {
2422                 /* GDB can request this when e.g. PC is 0xfffffffc */
2423                 LOG_ERROR("address + size wrapped (" TARGET_ADDR_FMT ", 0x%08" PRIx32 ")",
2424                                   address,
2425                                   size);
2426                 return ERROR_FAIL;
2427         }
2428
2429         return target->type->read_buffer(target, address, size, buffer);
2430 }
2431
2432 static int target_read_buffer_default(struct target *target, target_addr_t address, uint32_t count, uint8_t *buffer)
2433 {
2434         uint32_t size;
2435
2436         /* Align up to maximum 4 bytes. The loop condition makes sure the next pass
2437          * will have something to do with the size we leave to it. */
2438         for (size = 1; size < 4 && count >= size * 2 + (address & size); size *= 2) {
2439                 if (address & size) {
2440                         int retval = target_read_memory(target, address, size, 1, buffer);
2441                         if (retval != ERROR_OK)
2442                                 return retval;
2443                         address += size;
2444                         count -= size;
2445                         buffer += size;
2446                 }
2447         }
2448
2449         /* Read the data with as large access size as possible. */
2450         for (; size > 0; size /= 2) {
2451                 uint32_t aligned = count - count % size;
2452                 if (aligned > 0) {
2453                         int retval = target_read_memory(target, address, size, aligned / size, buffer);
2454                         if (retval != ERROR_OK)
2455                                 return retval;
2456                         address += aligned;
2457                         count -= aligned;
2458                         buffer += aligned;
2459                 }
2460         }
2461
2462         return ERROR_OK;
2463 }
2464
2465 int target_checksum_memory(struct target *target, target_addr_t address, uint32_t size, uint32_t *crc)
2466 {
2467         uint8_t *buffer;
2468         int retval;
2469         uint32_t i;
2470         uint32_t checksum = 0;
2471         if (!target_was_examined(target)) {
2472                 LOG_ERROR("Target not examined yet");
2473                 return ERROR_FAIL;
2474         }
2475
2476         retval = target->type->checksum_memory(target, address, size, &checksum);
2477         if (retval != ERROR_OK) {
2478                 buffer = malloc(size);
2479                 if (buffer == NULL) {
2480                         LOG_ERROR("error allocating buffer for section (%" PRIu32 " bytes)", size);
2481                         return ERROR_COMMAND_SYNTAX_ERROR;
2482                 }
2483                 retval = target_read_buffer(target, address, size, buffer);
2484                 if (retval != ERROR_OK) {
2485                         free(buffer);
2486                         return retval;
2487                 }
2488
2489                 /* convert to target endianness */
2490                 for (i = 0; i < (size/sizeof(uint32_t)); i++) {
2491                         uint32_t target_data;
2492                         target_data = target_buffer_get_u32(target, &buffer[i*sizeof(uint32_t)]);
2493                         target_buffer_set_u32(target, &buffer[i*sizeof(uint32_t)], target_data);
2494                 }
2495
2496                 retval = image_calculate_checksum(buffer, size, &checksum);
2497                 free(buffer);
2498         }
2499
2500         *crc = checksum;
2501
2502         return retval;
2503 }
2504
2505 int target_blank_check_memory(struct target *target,
2506         struct target_memory_check_block *blocks, int num_blocks,
2507         uint8_t erased_value)
2508 {
2509         if (!target_was_examined(target)) {
2510                 LOG_ERROR("Target not examined yet");
2511                 return ERROR_FAIL;
2512         }
2513
2514         if (target->type->blank_check_memory == NULL)
2515                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
2516
2517         return target->type->blank_check_memory(target, blocks, num_blocks, erased_value);
2518 }
2519
2520 int target_read_u64(struct target *target, target_addr_t address, uint64_t *value)
2521 {
2522         uint8_t value_buf[8];
2523         if (!target_was_examined(target)) {
2524                 LOG_ERROR("Target not examined yet");
2525                 return ERROR_FAIL;
2526         }
2527
2528         int retval = target_read_memory(target, address, 8, 1, value_buf);
2529
2530         if (retval == ERROR_OK) {
2531                 *value = target_buffer_get_u64(target, value_buf);
2532                 LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%16.16" PRIx64 "",
2533                                   address,
2534                                   *value);
2535         } else {
2536                 *value = 0x0;
2537                 LOG_DEBUG("address: " TARGET_ADDR_FMT " failed",
2538                                   address);
2539         }
2540
2541         return retval;
2542 }
2543
2544 int target_read_u32(struct target *target, target_addr_t address, uint32_t *value)
2545 {
2546         uint8_t value_buf[4];
2547         if (!target_was_examined(target)) {
2548                 LOG_ERROR("Target not examined yet");
2549                 return ERROR_FAIL;
2550         }
2551
2552         int retval = target_read_memory(target, address, 4, 1, value_buf);
2553
2554         if (retval == ERROR_OK) {
2555                 *value = target_buffer_get_u32(target, value_buf);
2556                 LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%8.8" PRIx32 "",
2557                                   address,
2558                                   *value);
2559         } else {
2560                 *value = 0x0;
2561                 LOG_DEBUG("address: " TARGET_ADDR_FMT " failed",
2562                                   address);
2563         }
2564
2565         return retval;
2566 }
2567
2568 int target_read_u16(struct target *target, target_addr_t address, uint16_t *value)
2569 {
2570         uint8_t value_buf[2];
2571         if (!target_was_examined(target)) {
2572                 LOG_ERROR("Target not examined yet");
2573                 return ERROR_FAIL;
2574         }
2575
2576         int retval = target_read_memory(target, address, 2, 1, value_buf);
2577
2578         if (retval == ERROR_OK) {
2579                 *value = target_buffer_get_u16(target, value_buf);
2580                 LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%4.4" PRIx16,
2581                                   address,
2582                                   *value);
2583         } else {
2584                 *value = 0x0;
2585                 LOG_DEBUG("address: " TARGET_ADDR_FMT " failed",
2586                                   address);
2587         }
2588
2589         return retval;
2590 }
2591
2592 int target_read_u8(struct target *target, target_addr_t address, uint8_t *value)
2593 {
2594         if (!target_was_examined(target)) {
2595                 LOG_ERROR("Target not examined yet");
2596                 return ERROR_FAIL;
2597         }
2598
2599         int retval = target_read_memory(target, address, 1, 1, value);
2600
2601         if (retval == ERROR_OK) {
2602                 LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%2.2" PRIx8,
2603                                   address,
2604                                   *value);
2605         } else {
2606                 *value = 0x0;
2607                 LOG_DEBUG("address: " TARGET_ADDR_FMT " failed",
2608                                   address);
2609         }
2610
2611         return retval;
2612 }
2613
2614 int target_write_u64(struct target *target, target_addr_t address, uint64_t value)
2615 {
2616         int retval;
2617         uint8_t value_buf[8];
2618         if (!target_was_examined(target)) {
2619                 LOG_ERROR("Target not examined yet");
2620                 return ERROR_FAIL;
2621         }
2622
2623         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%16.16" PRIx64 "",
2624                           address,
2625                           value);
2626
2627         target_buffer_set_u64(target, value_buf, value);
2628         retval = target_write_memory(target, address, 8, 1, value_buf);
2629         if (retval != ERROR_OK)
2630                 LOG_DEBUG("failed: %i", retval);
2631
2632         return retval;
2633 }
2634
2635 int target_write_u32(struct target *target, target_addr_t address, uint32_t value)
2636 {
2637         int retval;
2638         uint8_t value_buf[4];
2639         if (!target_was_examined(target)) {
2640                 LOG_ERROR("Target not examined yet");
2641                 return ERROR_FAIL;
2642         }
2643
2644         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%8.8" PRIx32 "",
2645                           address,
2646                           value);
2647
2648         target_buffer_set_u32(target, value_buf, value);
2649         retval = target_write_memory(target, address, 4, 1, value_buf);
2650         if (retval != ERROR_OK)
2651                 LOG_DEBUG("failed: %i", retval);
2652
2653         return retval;
2654 }
2655
2656 int target_write_u16(struct target *target, target_addr_t address, uint16_t value)
2657 {
2658         int retval;
2659         uint8_t value_buf[2];
2660         if (!target_was_examined(target)) {
2661                 LOG_ERROR("Target not examined yet");
2662                 return ERROR_FAIL;
2663         }
2664
2665         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%8.8" PRIx16,
2666                           address,
2667                           value);
2668
2669         target_buffer_set_u16(target, value_buf, value);
2670         retval = target_write_memory(target, address, 2, 1, value_buf);
2671         if (retval != ERROR_OK)
2672                 LOG_DEBUG("failed: %i", retval);
2673
2674         return retval;
2675 }
2676
2677 int target_write_u8(struct target *target, target_addr_t address, uint8_t value)
2678 {
2679         int retval;
2680         if (!target_was_examined(target)) {
2681                 LOG_ERROR("Target not examined yet");
2682                 return ERROR_FAIL;
2683         }
2684
2685         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%2.2" PRIx8,
2686                           address, value);
2687
2688         retval = target_write_memory(target, address, 1, 1, &value);
2689         if (retval != ERROR_OK)
2690                 LOG_DEBUG("failed: %i", retval);
2691
2692         return retval;
2693 }
2694
2695 int target_write_phys_u64(struct target *target, target_addr_t address, uint64_t value)
2696 {
2697         int retval;
2698         uint8_t value_buf[8];
2699         if (!target_was_examined(target)) {
2700                 LOG_ERROR("Target not examined yet");
2701                 return ERROR_FAIL;
2702         }
2703
2704         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%16.16" PRIx64 "",
2705                           address,
2706                           value);
2707
2708         target_buffer_set_u64(target, value_buf, value);
2709         retval = target_write_phys_memory(target, address, 8, 1, value_buf);
2710         if (retval != ERROR_OK)
2711                 LOG_DEBUG("failed: %i", retval);
2712
2713         return retval;
2714 }
2715
2716 int target_write_phys_u32(struct target *target, target_addr_t address, uint32_t value)
2717 {
2718         int retval;
2719         uint8_t value_buf[4];
2720         if (!target_was_examined(target)) {
2721                 LOG_ERROR("Target not examined yet");
2722                 return ERROR_FAIL;
2723         }
2724
2725         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%8.8" PRIx32 "",
2726                           address,
2727                           value);
2728
2729         target_buffer_set_u32(target, value_buf, value);
2730         retval = target_write_phys_memory(target, address, 4, 1, value_buf);
2731         if (retval != ERROR_OK)
2732                 LOG_DEBUG("failed: %i", retval);
2733
2734         return retval;
2735 }
2736
2737 int target_write_phys_u16(struct target *target, target_addr_t address, uint16_t value)
2738 {
2739         int retval;
2740         uint8_t value_buf[2];
2741         if (!target_was_examined(target)) {
2742                 LOG_ERROR("Target not examined yet");
2743                 return ERROR_FAIL;
2744         }
2745
2746         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%8.8" PRIx16,
2747                           address,
2748                           value);
2749
2750         target_buffer_set_u16(target, value_buf, value);
2751         retval = target_write_phys_memory(target, address, 2, 1, value_buf);
2752         if (retval != ERROR_OK)
2753                 LOG_DEBUG("failed: %i", retval);
2754
2755         return retval;
2756 }
2757
2758 int target_write_phys_u8(struct target *target, target_addr_t address, uint8_t value)
2759 {
2760         int retval;
2761         if (!target_was_examined(target)) {
2762                 LOG_ERROR("Target not examined yet");
2763                 return ERROR_FAIL;
2764         }
2765
2766         LOG_DEBUG("address: " TARGET_ADDR_FMT ", value: 0x%2.2" PRIx8,
2767                           address, value);
2768
2769         retval = target_write_phys_memory(target, address, 1, 1, &value);
2770         if (retval != ERROR_OK)
2771                 LOG_DEBUG("failed: %i", retval);
2772
2773         return retval;
2774 }
2775
2776 static int find_target(struct command_invocation *cmd, const char *name)
2777 {
2778         struct target *target = get_target(name);
2779         if (target == NULL) {
2780                 command_print(cmd, "Target: %s is unknown, try one of:\n", name);
2781                 return ERROR_FAIL;
2782         }
2783         if (!target->tap->enabled) {
2784                 command_print(cmd, "Target: TAP %s is disabled, "
2785                          "can't be the current target\n",
2786                          target->tap->dotted_name);
2787                 return ERROR_FAIL;
2788         }
2789
2790         cmd->ctx->current_target = target;
2791         if (cmd->ctx->current_target_override)
2792                 cmd->ctx->current_target_override = target;
2793
2794         return ERROR_OK;
2795 }
2796
2797
2798 COMMAND_HANDLER(handle_targets_command)
2799 {
2800         int retval = ERROR_OK;
2801         if (CMD_ARGC == 1) {
2802                 retval = find_target(CMD, CMD_ARGV[0]);
2803                 if (retval == ERROR_OK) {
2804                         /* we're done! */
2805                         return retval;
2806                 }
2807         }
2808
2809         struct target *target = all_targets;
2810         command_print(CMD, "    TargetName         Type       Endian TapName            State       ");
2811         command_print(CMD, "--  ------------------ ---------- ------ ------------------ ------------");
2812         while (target) {
2813                 const char *state;
2814                 char marker = ' ';
2815
2816                 if (target->tap->enabled)
2817                         state = target_state_name(target);
2818                 else
2819                         state = "tap-disabled";
2820
2821                 if (CMD_CTX->current_target == target)
2822                         marker = '*';
2823
2824                 /* keep columns lined up to match the headers above */
2825                 command_print(CMD,
2826                                 "%2d%c %-18s %-10s %-6s %-18s %s",
2827                                 target->target_number,
2828                                 marker,
2829                                 target_name(target),
2830                                 target_type_name(target),
2831                                 Jim_Nvp_value2name_simple(nvp_target_endian,
2832                                         target->endianness)->name,
2833                                 target->tap->dotted_name,
2834                                 state);
2835                 target = target->next;
2836         }
2837
2838         return retval;
2839 }
2840
2841 /* every 300ms we check for reset & powerdropout and issue a "reset halt" if so. */
2842
2843 static int powerDropout;
2844 static int srstAsserted;
2845
2846 static int runPowerRestore;
2847 static int runPowerDropout;
2848 static int runSrstAsserted;
2849 static int runSrstDeasserted;
2850
2851 static int sense_handler(void)
2852 {
2853         static int prevSrstAsserted;
2854         static int prevPowerdropout;
2855
2856         int retval = jtag_power_dropout(&powerDropout);
2857         if (retval != ERROR_OK)
2858                 return retval;
2859
2860         int powerRestored;
2861         powerRestored = prevPowerdropout && !powerDropout;
2862         if (powerRestored)
2863                 runPowerRestore = 1;
2864
2865         int64_t current = timeval_ms();
2866         static int64_t lastPower;
2867         bool waitMore = lastPower + 2000 > current;
2868         if (powerDropout && !waitMore) {
2869                 runPowerDropout = 1;
2870                 lastPower = current;
2871         }
2872
2873         retval = jtag_srst_asserted(&srstAsserted);
2874         if (retval != ERROR_OK)
2875                 return retval;
2876
2877         int srstDeasserted;
2878         srstDeasserted = prevSrstAsserted && !srstAsserted;
2879
2880         static int64_t lastSrst;
2881         waitMore = lastSrst + 2000 > current;
2882         if (srstDeasserted && !waitMore) {
2883                 runSrstDeasserted = 1;
2884                 lastSrst = current;
2885         }
2886
2887         if (!prevSrstAsserted && srstAsserted)
2888                 runSrstAsserted = 1;
2889
2890         prevSrstAsserted = srstAsserted;
2891         prevPowerdropout = powerDropout;
2892
2893         if (srstDeasserted || powerRestored) {
2894                 /* Other than logging the event we can't do anything here.
2895                  * Issuing a reset is a particularly bad idea as we might
2896                  * be inside a reset already.
2897                  */
2898         }
2899
2900         return ERROR_OK;
2901 }
2902
2903 /* process target state changes */
2904 static int handle_target(void *priv)
2905 {
2906         Jim_Interp *interp = (Jim_Interp *)priv;
2907         int retval = ERROR_OK;
2908
2909         if (!is_jtag_poll_safe()) {
2910                 /* polling is disabled currently */
2911                 return ERROR_OK;
2912         }
2913
2914         /* we do not want to recurse here... */
2915         static int recursive;
2916         if (!recursive) {
2917                 recursive = 1;
2918                 sense_handler();
2919                 /* danger! running these procedures can trigger srst assertions and power dropouts.
2920                  * We need to avoid an infinite loop/recursion here and we do that by
2921                  * clearing the flags after running these events.
2922                  */
2923                 int did_something = 0;
2924                 if (runSrstAsserted) {
2925                         LOG_INFO("srst asserted detected, running srst_asserted proc.");
2926                         Jim_Eval(interp, "srst_asserted");
2927                         did_something = 1;
2928                 }
2929                 if (runSrstDeasserted) {
2930                         Jim_Eval(interp, "srst_deasserted");
2931                         did_something = 1;
2932                 }
2933                 if (runPowerDropout) {
2934                         LOG_INFO("Power dropout detected, running power_dropout proc.");
2935                         Jim_Eval(interp, "power_dropout");
2936                         did_something = 1;
2937                 }
2938                 if (runPowerRestore) {
2939                         Jim_Eval(interp, "power_restore");
2940                         did_something = 1;
2941                 }
2942
2943                 if (did_something) {
2944                         /* clear detect flags */
2945                         sense_handler();
2946                 }
2947
2948                 /* clear action flags */
2949
2950                 runSrstAsserted = 0;
2951                 runSrstDeasserted = 0;
2952                 runPowerRestore = 0;
2953                 runPowerDropout = 0;
2954
2955                 recursive = 0;
2956         }
2957
2958         /* Poll targets for state changes unless that's globally disabled.
2959          * Skip targets that are currently disabled.
2960          */
2961         for (struct target *target = all_targets;
2962                         is_jtag_poll_safe() && target;
2963                         target = target->next) {
2964
2965                 if (!target_was_examined(target))
2966                         continue;
2967
2968                 if (!target->tap->enabled)
2969                         continue;
2970
2971                 if (target->backoff.times > target->backoff.count) {
2972                         /* do not poll this time as we failed previously */
2973                         target->backoff.count++;
2974                         continue;
2975                 }
2976                 target->backoff.count = 0;
2977
2978                 /* only poll target if we've got power and srst isn't asserted */
2979                 if (!powerDropout && !srstAsserted) {
2980                         /* polling may fail silently until the target has been examined */
2981                         retval = target_poll(target);
2982                         if (retval != ERROR_OK) {
2983                                 /* 100ms polling interval. Increase interval between polling up to 5000ms */
2984                                 if (target->backoff.times * polling_interval < 5000) {
2985                                         target->backoff.times *= 2;
2986                                         target->backoff.times++;
2987                                 }
2988
2989                                 /* Tell GDB to halt the debugger. This allows the user to
2990                                  * run monitor commands to handle the situation.
2991                                  */
2992                                 target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
2993                         }
2994                         if (target->backoff.times > 0) {
2995                                 LOG_USER("Polling target %s failed, trying to reexamine", target_name(target));
2996                                 target_reset_examined(target);
2997                                 retval = target_examine_one(target);
2998                                 /* Target examination could have failed due to unstable connection,
2999                                  * but we set the examined flag anyway to repoll it later */
3000                                 if (retval != ERROR_OK) {
3001                                         target->examined = true;
3002                                         LOG_USER("Examination failed, GDB will be halted. Polling again in %dms",
3003                                                  target->backoff.times * polling_interval);
3004                                         return retval;
3005                                 }
3006                         }
3007
3008                         /* Since we succeeded, we reset backoff count */
3009                         target->backoff.times = 0;
3010                 }
3011         }
3012
3013         return retval;
3014 }
3015
3016 COMMAND_HANDLER(handle_reg_command)
3017 {
3018         struct target *target;
3019         struct reg *reg = NULL;
3020         unsigned count = 0;
3021         char *value;
3022
3023         LOG_DEBUG("-");
3024
3025         target = get_current_target(CMD_CTX);
3026
3027         /* list all available registers for the current target */
3028         if (CMD_ARGC == 0) {
3029                 struct reg_cache *cache = target->reg_cache;
3030
3031                 count = 0;
3032                 while (cache) {
3033                         unsigned i;
3034
3035                         command_print(CMD, "===== %s", cache->name);
3036
3037                         for (i = 0, reg = cache->reg_list;
3038                                         i < cache->num_regs;
3039                                         i++, reg++, count++) {
3040                                 if (reg->exist == false)
3041                                         continue;
3042                                 /* only print cached values if they are valid */
3043                                 if (reg->valid) {
3044                                         value = buf_to_hex_str(reg->value,
3045                                                         reg->size);
3046                                         command_print(CMD,
3047                                                         "(%i) %s (/%" PRIu32 "): 0x%s%s",
3048                                                         count, reg->name,
3049                                                         reg->size, value,
3050                                                         reg->dirty
3051                                                                 ? " (dirty)"
3052                                                                 : "");
3053                                         free(value);
3054                                 } else {
3055                                         command_print(CMD, "(%i) %s (/%" PRIu32 ")",
3056                                                           count, reg->name,
3057                                                           reg->size);
3058                                 }
3059                         }
3060                         cache = cache->next;
3061                 }
3062
3063                 return ERROR_OK;
3064         }
3065
3066         /* access a single register by its ordinal number */
3067         if ((CMD_ARGV[0][0] >= '0') && (CMD_ARGV[0][0] <= '9')) {
3068                 unsigned num;
3069                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], num);
3070
3071                 struct reg_cache *cache = target->reg_cache;
3072                 count = 0;
3073                 while (cache) {
3074                         unsigned i;
3075                         for (i = 0; i < cache->num_regs; i++) {
3076                                 if (count++ == num) {
3077                                         reg = &cache->reg_list[i];
3078                                         break;
3079                                 }
3080                         }
3081                         if (reg)
3082                                 break;
3083                         cache = cache->next;
3084                 }
3085
3086                 if (!reg) {
3087                         command_print(CMD, "%i is out of bounds, the current target "
3088                                         "has only %i registers (0 - %i)", num, count, count - 1);
3089                         return ERROR_OK;
3090                 }
3091         } else {
3092                 /* access a single register by its name */
3093                 reg = register_get_by_name(target->reg_cache, CMD_ARGV[0], 1);
3094
3095                 if (!reg)
3096                         goto not_found;
3097         }
3098
3099         assert(reg != NULL); /* give clang a hint that we *know* reg is != NULL here */
3100
3101         if (!reg->exist)
3102                 goto not_found;
3103
3104         /* display a register */
3105         if ((CMD_ARGC == 1) || ((CMD_ARGC == 2) && !((CMD_ARGV[1][0] >= '0')
3106                         && (CMD_ARGV[1][0] <= '9')))) {
3107                 if ((CMD_ARGC == 2) && (strcmp(CMD_ARGV[1], "force") == 0))
3108                         reg->valid = 0;
3109
3110                 if (reg->valid == 0)
3111                         reg->type->get(reg);
3112                 value = buf_to_hex_str(reg->value, reg->size);
3113                 command_print(CMD, "%s (/%i): 0x%s", reg->name, (int)(reg->size), value);
3114                 free(value);
3115                 return ERROR_OK;
3116         }
3117
3118         /* set register value */
3119         if (CMD_ARGC == 2) {
3120                 uint8_t *buf = malloc(DIV_ROUND_UP(reg->size, 8));
3121                 if (buf == NULL)
3122                         return ERROR_FAIL;
3123                 str_to_buf(CMD_ARGV[1], strlen(CMD_ARGV[1]), buf, reg->size, 0);
3124
3125                 reg->type->set(reg, buf);
3126
3127                 value = buf_to_hex_str(reg->value, reg->size);
3128                 command_print(CMD, "%s (/%i): 0x%s", reg->name, (int)(reg->size), value);
3129                 free(value);
3130
3131                 free(buf);
3132
3133                 return ERROR_OK;
3134         }
3135
3136         return ERROR_COMMAND_SYNTAX_ERROR;
3137
3138 not_found:
3139         command_print(CMD, "register %s not found in current target", CMD_ARGV[0]);
3140         return ERROR_OK;
3141 }
3142
3143 COMMAND_HANDLER(handle_poll_command)
3144 {
3145         int retval = ERROR_OK;
3146         struct target *target = get_current_target(CMD_CTX);
3147
3148         if (CMD_ARGC == 0) {
3149                 command_print(CMD, "background polling: %s",
3150                                 jtag_poll_get_enabled() ? "on" : "off");
3151                 command_print(CMD, "TAP: %s (%s)",
3152                                 target->tap->dotted_name,
3153                                 target->tap->enabled ? "enabled" : "disabled");
3154                 if (!target->tap->enabled)
3155                         return ERROR_OK;
3156                 retval = target_poll(target);
3157                 if (retval != ERROR_OK)
3158                         return retval;
3159                 retval = target_arch_state(target);
3160                 if (retval != ERROR_OK)
3161                         return retval;
3162         } else if (CMD_ARGC == 1) {
3163                 bool enable;
3164                 COMMAND_PARSE_ON_OFF(CMD_ARGV[0], enable);
3165                 jtag_poll_set_enabled(enable);
3166         } else
3167                 return ERROR_COMMAND_SYNTAX_ERROR;
3168
3169         return retval;
3170 }
3171
3172 COMMAND_HANDLER(handle_wait_halt_command)
3173 {
3174         if (CMD_ARGC > 1)
3175                 return ERROR_COMMAND_SYNTAX_ERROR;
3176
3177         unsigned ms = DEFAULT_HALT_TIMEOUT;
3178         if (1 == CMD_ARGC) {
3179                 int retval = parse_uint(CMD_ARGV[0], &ms);
3180                 if (ERROR_OK != retval)
3181                         return ERROR_COMMAND_SYNTAX_ERROR;
3182         }
3183
3184         struct target *target = get_current_target(CMD_CTX);
3185         return target_wait_state(target, TARGET_HALTED, ms);
3186 }
3187
3188 /* wait for target state to change. The trick here is to have a low
3189  * latency for short waits and not to suck up all the CPU time
3190  * on longer waits.
3191  *
3192  * After 500ms, keep_alive() is invoked
3193  */
3194 int target_wait_state(struct target *target, enum target_state state, int ms)
3195 {
3196         int retval;
3197         int64_t then = 0, cur;
3198         bool once = true;
3199
3200         for (;;) {
3201                 retval = target_poll(target);
3202                 if (retval != ERROR_OK)
3203                         return retval;
3204                 if (target->state == state)
3205                         break;
3206                 cur = timeval_ms();
3207                 if (once) {
3208                         once = false;
3209                         then = timeval_ms();
3210                         LOG_DEBUG("waiting for target %s...",
3211                                 Jim_Nvp_value2name_simple(nvp_target_state, state)->name);
3212                 }
3213
3214                 if (cur-then > 500)
3215                         keep_alive();
3216
3217                 if ((cur-then) > ms) {
3218                         LOG_ERROR("timed out while waiting for target %s",
3219                                 Jim_Nvp_value2name_simple(nvp_target_state, state)->name);
3220                         return ERROR_FAIL;
3221                 }
3222         }
3223
3224         return ERROR_OK;
3225 }
3226
3227 COMMAND_HANDLER(handle_halt_command)
3228 {
3229         LOG_DEBUG("-");
3230
3231         struct target *target = get_current_target(CMD_CTX);
3232
3233         target->verbose_halt_msg = true;
3234
3235         int retval = target_halt(target);
3236         if (ERROR_OK != retval)
3237                 return retval;
3238
3239         if (CMD_ARGC == 1) {
3240                 unsigned wait_local;
3241                 retval = parse_uint(CMD_ARGV[0], &wait_local);
3242                 if (ERROR_OK != retval)
3243                         return ERROR_COMMAND_SYNTAX_ERROR;
3244                 if (!wait_local)
3245                         return ERROR_OK;
3246         }
3247
3248         return CALL_COMMAND_HANDLER(handle_wait_halt_command);
3249 }
3250
3251 COMMAND_HANDLER(handle_soft_reset_halt_command)
3252 {
3253         struct target *target = get_current_target(CMD_CTX);
3254
3255         LOG_USER("requesting target halt and executing a soft reset");
3256
3257         target_soft_reset_halt(target);
3258
3259         return ERROR_OK;
3260 }
3261
3262 COMMAND_HANDLER(handle_reset_command)
3263 {
3264         if (CMD_ARGC > 1)
3265                 return ERROR_COMMAND_SYNTAX_ERROR;
3266
3267         enum target_reset_mode reset_mode = RESET_RUN;
3268         if (CMD_ARGC == 1) {
3269                 const Jim_Nvp *n;
3270                 n = Jim_Nvp_name2value_simple(nvp_reset_modes, CMD_ARGV[0]);
3271                 if ((n->name == NULL) || (n->value == RESET_UNKNOWN))
3272                         return ERROR_COMMAND_SYNTAX_ERROR;
3273                 reset_mode = n->value;
3274         }
3275
3276         /* reset *all* targets */
3277         return target_process_reset(CMD, reset_mode);
3278 }
3279
3280
3281 COMMAND_HANDLER(handle_resume_command)
3282 {
3283         int current = 1;
3284         if (CMD_ARGC > 1)
3285                 return ERROR_COMMAND_SYNTAX_ERROR;
3286
3287         struct target *target = get_current_target(CMD_CTX);
3288
3289         /* with no CMD_ARGV, resume from current pc, addr = 0,
3290          * with one arguments, addr = CMD_ARGV[0],
3291          * handle breakpoints, not debugging */
3292         target_addr_t addr = 0;
3293         if (CMD_ARGC == 1) {
3294                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
3295                 current = 0;
3296         }
3297
3298         return target_resume(target, current, addr, 1, 0);
3299 }
3300
3301 COMMAND_HANDLER(handle_step_command)
3302 {
3303         if (CMD_ARGC > 1)
3304                 return ERROR_COMMAND_SYNTAX_ERROR;
3305
3306         LOG_DEBUG("-");
3307
3308         /* with no CMD_ARGV, step from current pc, addr = 0,
3309          * with one argument addr = CMD_ARGV[0],
3310          * handle breakpoints, debugging */
3311         target_addr_t addr = 0;
3312         int current_pc = 1;
3313         if (CMD_ARGC == 1) {
3314                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
3315                 current_pc = 0;
3316         }
3317
3318         struct target *target = get_current_target(CMD_CTX);
3319
3320         return target_step(target, current_pc, addr, 1);
3321 }
3322
3323 void target_handle_md_output(struct command_invocation *cmd,
3324                 struct target *target, target_addr_t address, unsigned size,
3325                 unsigned count, const uint8_t *buffer)
3326 {
3327         const unsigned line_bytecnt = 32;
3328         unsigned line_modulo = line_bytecnt / size;
3329
3330         char output[line_bytecnt * 4 + 1];
3331         unsigned output_len = 0;
3332
3333         const char *value_fmt;
3334         switch (size) {
3335         case 8:
3336                 value_fmt = "%16.16"PRIx64" ";
3337                 break;
3338         case 4:
3339                 value_fmt = "%8.8"PRIx64" ";
3340                 break;
3341         case 2:
3342                 value_fmt = "%4.4"PRIx64" ";
3343                 break;
3344         case 1:
3345                 value_fmt = "%2.2"PRIx64" ";
3346                 break;
3347         default:
3348                 /* "can't happen", caller checked */
3349                 LOG_ERROR("invalid memory read size: %u", size);
3350                 return;
3351         }
3352
3353         for (unsigned i = 0; i < count; i++) {
3354                 if (i % line_modulo == 0) {
3355                         output_len += snprintf(output + output_len,
3356                                         sizeof(output) - output_len,
3357                                         TARGET_ADDR_FMT ": ",
3358                                         (address + (i * size)));
3359                 }
3360
3361                 uint64_t value = 0;
3362                 const uint8_t *value_ptr = buffer + i * size;
3363                 switch (size) {
3364                 case 8:
3365                         value = target_buffer_get_u64(target, value_ptr);
3366                         break;
3367                 case 4:
3368                         value = target_buffer_get_u32(target, value_ptr);
3369                         break;
3370                 case 2:
3371                         value = target_buffer_get_u16(target, value_ptr);
3372                         break;
3373                 case 1:
3374                         value = *value_ptr;
3375                 }
3376                 output_len += snprintf(output + output_len,
3377                                 sizeof(output) - output_len,
3378                                 value_fmt, value);
3379
3380                 if ((i % line_modulo == line_modulo - 1) || (i == count - 1)) {
3381                         command_print(cmd, "%s", output);
3382                         output_len = 0;
3383                 }
3384         }
3385 }
3386
3387 COMMAND_HANDLER(handle_md_command)
3388 {
3389         if (CMD_ARGC < 1)
3390                 return ERROR_COMMAND_SYNTAX_ERROR;
3391
3392         unsigned size = 0;
3393         switch (CMD_NAME[2]) {
3394         case 'd':
3395                 size = 8;
3396                 break;
3397         case 'w':
3398                 size = 4;
3399                 break;
3400         case 'h':
3401                 size = 2;
3402                 break;
3403         case 'b':
3404                 size = 1;
3405                 break;
3406         default:
3407                 return ERROR_COMMAND_SYNTAX_ERROR;
3408         }
3409
3410         bool physical = strcmp(CMD_ARGV[0], "phys") == 0;
3411         int (*fn)(struct target *target,
3412                         target_addr_t address, uint32_t size_value, uint32_t count, uint8_t *buffer);
3413         if (physical) {
3414                 CMD_ARGC--;
3415                 CMD_ARGV++;
3416                 fn = target_read_phys_memory;
3417         } else
3418                 fn = target_read_memory;
3419         if ((CMD_ARGC < 1) || (CMD_ARGC > 2))
3420                 return ERROR_COMMAND_SYNTAX_ERROR;
3421
3422         target_addr_t address;
3423         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], address);
3424
3425         unsigned count = 1;
3426         if (CMD_ARGC == 2)
3427                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[1], count);
3428
3429         uint8_t *buffer = calloc(count, size);
3430         if (buffer == NULL) {
3431                 LOG_ERROR("Failed to allocate md read buffer");
3432                 return ERROR_FAIL;
3433         }
3434
3435         struct target *target = get_current_target(CMD_CTX);
3436         int retval = fn(target, address, size, count, buffer);
3437         if (ERROR_OK == retval)
3438                 target_handle_md_output(CMD, target, address, size, count, buffer);
3439
3440         free(buffer);
3441
3442         return retval;
3443 }
3444
3445 typedef int (*target_write_fn)(struct target *target,
3446                 target_addr_t address, uint32_t size, uint32_t count, const uint8_t *buffer);
3447
3448 static int target_fill_mem(struct target *target,
3449                 target_addr_t address,
3450                 target_write_fn fn,
3451                 unsigned data_size,
3452                 /* value */
3453                 uint64_t b,
3454                 /* count */
3455                 unsigned c)
3456 {
3457         /* We have to write in reasonably large chunks to be able
3458          * to fill large memory areas with any sane speed */
3459         const unsigned chunk_size = 16384;
3460         uint8_t *target_buf = malloc(chunk_size * data_size);
3461         if (target_buf == NULL) {
3462                 LOG_ERROR("Out of memory");
3463                 return ERROR_FAIL;
3464         }
3465
3466         for (unsigned i = 0; i < chunk_size; i++) {
3467                 switch (data_size) {
3468                 case 8:
3469                         target_buffer_set_u64(target, target_buf + i * data_size, b);
3470                         break;
3471                 case 4:
3472                         target_buffer_set_u32(target, target_buf + i * data_size, b);
3473                         break;
3474                 case 2:
3475                         target_buffer_set_u16(target, target_buf + i * data_size, b);
3476                         break;
3477                 case 1:
3478                         target_buffer_set_u8(target, target_buf + i * data_size, b);
3479                         break;
3480                 default:
3481                         exit(-1);
3482                 }
3483         }
3484
3485         int retval = ERROR_OK;
3486
3487         for (unsigned x = 0; x < c; x += chunk_size) {
3488                 unsigned current;
3489                 current = c - x;
3490                 if (current > chunk_size)
3491                         current = chunk_size;
3492                 retval = fn(target, address + x * data_size, data_size, current, target_buf);
3493                 if (retval != ERROR_OK)
3494                         break;
3495                 /* avoid GDB timeouts */
3496                 keep_alive();
3497         }
3498         free(target_buf);
3499
3500         return retval;
3501 }
3502
3503
3504 COMMAND_HANDLER(handle_mw_command)
3505 {
3506         if (CMD_ARGC < 2)
3507                 return ERROR_COMMAND_SYNTAX_ERROR;
3508         bool physical = strcmp(CMD_ARGV[0], "phys") == 0;
3509         target_write_fn fn;
3510         if (physical) {
3511                 CMD_ARGC--;
3512                 CMD_ARGV++;
3513                 fn = target_write_phys_memory;
3514         } else
3515                 fn = target_write_memory;
3516         if ((CMD_ARGC < 2) || (CMD_ARGC > 3))
3517                 return ERROR_COMMAND_SYNTAX_ERROR;
3518
3519         target_addr_t address;
3520         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], address);
3521
3522         uint64_t value;
3523         COMMAND_PARSE_NUMBER(u64, CMD_ARGV[1], value);
3524
3525         unsigned count = 1;
3526         if (CMD_ARGC == 3)
3527                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[2], count);
3528
3529         struct target *target = get_current_target(CMD_CTX);
3530         unsigned wordsize;
3531         switch (CMD_NAME[2]) {
3532                 case 'd':
3533                         wordsize = 8;
3534                         break;
3535                 case 'w':
3536                         wordsize = 4;
3537                         break;
3538                 case 'h':
3539                         wordsize = 2;
3540                         break;
3541                 case 'b':
3542                         wordsize = 1;
3543                         break;
3544                 default:
3545                         return ERROR_COMMAND_SYNTAX_ERROR;
3546         }
3547
3548         return target_fill_mem(target, address, fn, wordsize, value, count);
3549 }
3550
3551 static COMMAND_HELPER(parse_load_image_command_CMD_ARGV, struct image *image,
3552                 target_addr_t *min_address, target_addr_t *max_address)
3553 {
3554         if (CMD_ARGC < 1 || CMD_ARGC > 5)
3555                 return ERROR_COMMAND_SYNTAX_ERROR;
3556
3557         /* a base address isn't always necessary,
3558          * default to 0x0 (i.e. don't relocate) */
3559         if (CMD_ARGC >= 2) {
3560                 target_addr_t addr;
3561                 COMMAND_PARSE_ADDRESS(CMD_ARGV[1], addr);
3562                 image->base_address = addr;
3563                 image->base_address_set = true;
3564         } else
3565                 image->base_address_set = false;
3566
3567         image->start_address_set = false;
3568
3569         if (CMD_ARGC >= 4)
3570                 COMMAND_PARSE_ADDRESS(CMD_ARGV[3], *min_address);
3571         if (CMD_ARGC == 5) {
3572                 COMMAND_PARSE_ADDRESS(CMD_ARGV[4], *max_address);
3573                 /* use size (given) to find max (required) */
3574                 *max_address += *min_address;
3575         }
3576
3577         if (*min_address > *max_address)
3578                 return ERROR_COMMAND_SYNTAX_ERROR;
3579
3580         return ERROR_OK;
3581 }
3582
3583 COMMAND_HANDLER(handle_load_image_command)
3584 {
3585         uint8_t *buffer;
3586         size_t buf_cnt;
3587         uint32_t image_size;
3588         target_addr_t min_address = 0;
3589         target_addr_t max_address = -1;
3590         struct image image;
3591
3592         int retval = CALL_COMMAND_HANDLER(parse_load_image_command_CMD_ARGV,
3593                         &image, &min_address, &max_address);
3594         if (ERROR_OK != retval)
3595                 return retval;
3596
3597         struct target *target = get_current_target(CMD_CTX);
3598
3599         struct duration bench;
3600         duration_start(&bench);
3601
3602         if (image_open(&image, CMD_ARGV[0], (CMD_ARGC >= 3) ? CMD_ARGV[2] : NULL) != ERROR_OK)
3603                 return ERROR_FAIL;
3604
3605         image_size = 0x0;
3606         retval = ERROR_OK;
3607         for (unsigned int i = 0; i < image.num_sections; i++) {
3608                 buffer = malloc(image.sections[i].size);
3609                 if (buffer == NULL) {
3610                         command_print(CMD,
3611                                                   "error allocating buffer for section (%d bytes)",
3612                                                   (int)(image.sections[i].size));
3613                         retval = ERROR_FAIL;
3614                         break;
3615                 }
3616
3617                 retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt);
3618                 if (retval != ERROR_OK) {
3619                         free(buffer);
3620                         break;
3621                 }
3622
3623                 uint32_t offset = 0;
3624                 uint32_t length = buf_cnt;
3625
3626                 /* DANGER!!! beware of unsigned comparison here!!! */
3627
3628                 if ((image.sections[i].base_address + buf_cnt >= min_address) &&
3629                                 (image.sections[i].base_address < max_address)) {
3630
3631                         if (image.sections[i].base_address < min_address) {
3632                                 /* clip addresses below */
3633                                 offset += min_address-image.sections[i].base_address;
3634                                 length -= offset;
3635                         }
3636
3637                         if (image.sections[i].base_address + buf_cnt > max_address)
3638                                 length -= (image.sections[i].base_address + buf_cnt)-max_address;
3639
3640                         retval = target_write_buffer(target,
3641                                         image.sections[i].base_address + offset, length, buffer + offset);
3642                         if (retval != ERROR_OK) {
3643                                 free(buffer);
3644                                 break;
3645                         }
3646                         image_size += length;
3647                         command_print(CMD, "%u bytes written at address " TARGET_ADDR_FMT "",
3648                                         (unsigned int)length,
3649                                         image.sections[i].base_address + offset);
3650                 }
3651
3652                 free(buffer);
3653         }
3654
3655         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
3656                 command_print(CMD, "downloaded %" PRIu32 " bytes "
3657                                 "in %fs (%0.3f KiB/s)", image_size,
3658                                 duration_elapsed(&bench), duration_kbps(&bench, image_size));
3659         }
3660
3661         image_close(&image);
3662
3663         return retval;
3664
3665 }
3666
3667 COMMAND_HANDLER(handle_dump_image_command)
3668 {
3669         struct fileio *fileio;
3670         uint8_t *buffer;
3671         int retval, retvaltemp;
3672         target_addr_t address, size;
3673         struct duration bench;
3674         struct target *target = get_current_target(CMD_CTX);
3675
3676         if (CMD_ARGC != 3)
3677                 return ERROR_COMMAND_SYNTAX_ERROR;
3678
3679         COMMAND_PARSE_ADDRESS(CMD_ARGV[1], address);
3680         COMMAND_PARSE_ADDRESS(CMD_ARGV[2], size);
3681
3682         uint32_t buf_size = (size > 4096) ? 4096 : size;
3683         buffer = malloc(buf_size);
3684         if (!buffer)
3685                 return ERROR_FAIL;
3686
3687         retval = fileio_open(&fileio, CMD_ARGV[0], FILEIO_WRITE, FILEIO_BINARY);
3688         if (retval != ERROR_OK) {
3689                 free(buffer);
3690                 return retval;
3691         }
3692
3693         duration_start(&bench);
3694
3695         while (size > 0) {
3696                 size_t size_written;
3697                 uint32_t this_run_size = (size > buf_size) ? buf_size : size;
3698                 retval = target_read_buffer(target, address, this_run_size, buffer);
3699                 if (retval != ERROR_OK)
3700                         break;
3701
3702                 retval = fileio_write(fileio, this_run_size, buffer, &size_written);
3703                 if (retval != ERROR_OK)
3704                         break;
3705
3706                 size -= this_run_size;
3707                 address += this_run_size;
3708         }
3709
3710         free(buffer);
3711
3712         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
3713                 size_t filesize;
3714                 retval = fileio_size(fileio, &filesize);
3715                 if (retval != ERROR_OK)
3716                         return retval;
3717                 command_print(CMD,
3718                                 "dumped %zu bytes in %fs (%0.3f KiB/s)", filesize,
3719                                 duration_elapsed(&bench), duration_kbps(&bench, filesize));
3720         }
3721
3722         retvaltemp = fileio_close(fileio);
3723         if (retvaltemp != ERROR_OK)
3724                 return retvaltemp;
3725
3726         return retval;
3727 }
3728
3729 enum verify_mode {
3730         IMAGE_TEST = 0,
3731         IMAGE_VERIFY = 1,
3732         IMAGE_CHECKSUM_ONLY = 2
3733 };
3734
3735 static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode verify)
3736 {
3737         uint8_t *buffer;
3738         size_t buf_cnt;
3739         uint32_t image_size;
3740         int retval;
3741         uint32_t checksum = 0;
3742         uint32_t mem_checksum = 0;
3743
3744         struct image image;
3745
3746         struct target *target = get_current_target(CMD_CTX);
3747
3748         if (CMD_ARGC < 1)
3749                 return ERROR_COMMAND_SYNTAX_ERROR;
3750
3751         if (!target) {
3752                 LOG_ERROR("no target selected");
3753                 return ERROR_FAIL;
3754         }
3755
3756         struct duration bench;
3757         duration_start(&bench);
3758
3759         if (CMD_ARGC >= 2) {
3760                 target_addr_t addr;
3761                 COMMAND_PARSE_ADDRESS(CMD_ARGV[1], addr);
3762                 image.base_address = addr;
3763                 image.base_address_set = true;
3764         } else {
3765                 image.base_address_set = false;
3766                 image.base_address = 0x0;
3767         }
3768
3769         image.start_address_set = false;
3770
3771         retval = image_open(&image, CMD_ARGV[0], (CMD_ARGC == 3) ? CMD_ARGV[2] : NULL);
3772         if (retval != ERROR_OK)
3773                 return retval;
3774
3775         image_size = 0x0;
3776         int diffs = 0;
3777         retval = ERROR_OK;
3778         for (unsigned int i = 0; i < image.num_sections; i++) {
3779                 buffer = malloc(image.sections[i].size);
3780                 if (buffer == NULL) {
3781                         command_print(CMD,
3782                                         "error allocating buffer for section (%" PRIu32 " bytes)",
3783                                         image.sections[i].size);
3784                         break;
3785                 }
3786                 retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt);
3787                 if (retval != ERROR_OK) {
3788                         free(buffer);
3789                         break;
3790                 }
3791
3792                 if (verify >= IMAGE_VERIFY) {
3793                         /* calculate checksum of image */
3794                         retval = image_calculate_checksum(buffer, buf_cnt, &checksum);
3795                         if (retval != ERROR_OK) {
3796                                 free(buffer);
3797                                 break;
3798                         }
3799
3800                         retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
3801                         if (retval != ERROR_OK) {
3802                                 free(buffer);
3803                                 break;
3804                         }
3805                         if ((checksum != mem_checksum) && (verify == IMAGE_CHECKSUM_ONLY)) {
3806                                 LOG_ERROR("checksum mismatch");
3807                                 free(buffer);
3808                                 retval = ERROR_FAIL;
3809                                 goto done;
3810                         }
3811                         if (checksum != mem_checksum) {
3812                                 /* failed crc checksum, fall back to a binary compare */
3813                                 uint8_t *data;
3814
3815                                 if (diffs == 0)
3816                                         LOG_ERROR("checksum mismatch - attempting binary compare");
3817
3818                                 data = malloc(buf_cnt);
3819
3820                                 retval = target_read_buffer(target, image.sections[i].base_address, buf_cnt, data);
3821                                 if (retval == ERROR_OK) {
3822                                         uint32_t t;
3823                                         for (t = 0; t < buf_cnt; t++) {
3824                                                 if (data[t] != buffer[t]) {
3825                                                         command_print(CMD,
3826                                                                                   "diff %d address 0x%08x. Was 0x%02x instead of 0x%02x",
3827                                                                                   diffs,
3828                                                                                   (unsigned)(t + image.sections[i].base_address),
3829                                                                                   data[t],
3830                                                                                   buffer[t]);
3831                                                         if (diffs++ >= 127) {
3832                                                                 command_print(CMD, "More than 128 errors, the rest are not printed.");
3833                                                                 free(data);
3834                                                                 free(buffer);
3835                                                                 goto done;
3836                                                         }
3837                                                 }
3838                                                 keep_alive();
3839                                         }
3840                                 }
3841                                 free(data);
3842                         }
3843                 } else {
3844                         command_print(CMD, "address " TARGET_ADDR_FMT " length 0x%08zx",
3845                                                   image.sections[i].base_address,
3846                                                   buf_cnt);
3847                 }
3848
3849                 free(buffer);
3850                 image_size += buf_cnt;
3851         }
3852         if (diffs > 0)
3853                 command_print(CMD, "No more differences found.");
3854 done:
3855         if (diffs > 0)
3856                 retval = ERROR_FAIL;
3857         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
3858                 command_print(CMD, "verified %" PRIu32 " bytes "
3859                                 "in %fs (%0.3f KiB/s)", image_size,
3860                                 duration_elapsed(&bench), duration_kbps(&bench, image_size));
3861         }
3862
3863         image_close(&image);
3864
3865         return retval;
3866 }
3867
3868 COMMAND_HANDLER(handle_verify_image_checksum_command)
3869 {
3870         return CALL_COMMAND_HANDLER(handle_verify_image_command_internal, IMAGE_CHECKSUM_ONLY);
3871 }
3872
3873 COMMAND_HANDLER(handle_verify_image_command)
3874 {
3875         return CALL_COMMAND_HANDLER(handle_verify_image_command_internal, IMAGE_VERIFY);
3876 }
3877
3878 COMMAND_HANDLER(handle_test_image_command)
3879 {
3880         return CALL_COMMAND_HANDLER(handle_verify_image_command_internal, IMAGE_TEST);
3881 }
3882
3883 static int handle_bp_command_list(struct command_invocation *cmd)
3884 {
3885         struct target *target = get_current_target(cmd->ctx);
3886         struct breakpoint *breakpoint = target->breakpoints;
3887         while (breakpoint) {
3888                 if (breakpoint->type == BKPT_SOFT) {
3889                         char *buf = buf_to_hex_str(breakpoint->orig_instr,
3890                                         breakpoint->length);
3891                         command_print(cmd, "IVA breakpoint: " TARGET_ADDR_FMT ", 0x%x, %i, 0x%s",
3892                                         breakpoint->address,
3893                                         breakpoint->length,
3894                                         breakpoint->set, buf);
3895                         free(buf);
3896                 } else {
3897                         if ((breakpoint->address == 0) && (breakpoint->asid != 0))
3898                                 command_print(cmd, "Context breakpoint: 0x%8.8" PRIx32 ", 0x%x, %i",
3899                                                         breakpoint->asid,
3900                                                         breakpoint->length, breakpoint->set);
3901                         else if ((breakpoint->address != 0) && (breakpoint->asid != 0)) {
3902                                 command_print(cmd, "Hybrid breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
3903                                                         breakpoint->address,
3904                                                         breakpoint->length, breakpoint->set);
3905                                 command_print(cmd, "\t|--->linked with ContextID: 0x%8.8" PRIx32,
3906                                                         breakpoint->asid);
3907                         } else
3908                                 command_print(cmd, "Breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
3909                                                         breakpoint->address,
3910                                                         breakpoint->length, breakpoint->set);
3911                 }
3912
3913                 breakpoint = breakpoint->next;
3914         }
3915         return ERROR_OK;
3916 }
3917
3918 static int handle_bp_command_set(struct command_invocation *cmd,
3919                 target_addr_t addr, uint32_t asid, uint32_t length, int hw)
3920 {
3921         struct target *target = get_current_target(cmd->ctx);
3922         int retval;
3923
3924         if (asid == 0) {
3925                 retval = breakpoint_add(target, addr, length, hw);
3926                 /* error is always logged in breakpoint_add(), do not print it again */
3927                 if (ERROR_OK == retval)
3928                         command_print(cmd, "breakpoint set at " TARGET_ADDR_FMT "", addr);
3929
3930         } else if (addr == 0) {
3931                 if (target->type->add_context_breakpoint == NULL) {
3932                         LOG_ERROR("Context breakpoint not available");
3933                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
3934                 }
3935                 retval = context_breakpoint_add(target, asid, length, hw);
3936                 /* error is always logged in context_breakpoint_add(), do not print it again */
3937                 if (ERROR_OK == retval)
3938                         command_print(cmd, "Context breakpoint set at 0x%8.8" PRIx32 "", asid);
3939
3940         } else {
3941                 if (target->type->add_hybrid_breakpoint == NULL) {
3942                         LOG_ERROR("Hybrid breakpoint not available");
3943                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
3944                 }
3945                 retval = hybrid_breakpoint_add(target, addr, asid, length, hw);
3946                 /* error is always logged in hybrid_breakpoint_add(), do not print it again */
3947                 if (ERROR_OK == retval)
3948                         command_print(cmd, "Hybrid breakpoint set at 0x%8.8" PRIx32 "", asid);
3949         }
3950         return retval;
3951 }
3952
3953 COMMAND_HANDLER(handle_bp_command)
3954 {
3955         target_addr_t addr;
3956         uint32_t asid;
3957         uint32_t length;
3958         int hw = BKPT_SOFT;
3959
3960         switch (CMD_ARGC) {
3961                 case 0:
3962                         return handle_bp_command_list(CMD);
3963
3964                 case 2:
3965                         asid = 0;
3966                         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
3967                         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
3968                         return handle_bp_command_set(CMD, addr, asid, length, hw);
3969
3970                 case 3:
3971                         if (strcmp(CMD_ARGV[2], "hw") == 0) {
3972                                 hw = BKPT_HARD;
3973                                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
3974                                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
3975                                 asid = 0;
3976                                 return handle_bp_command_set(CMD, addr, asid, length, hw);
3977                         } else if (strcmp(CMD_ARGV[2], "hw_ctx") == 0) {
3978                                 hw = BKPT_HARD;
3979                                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], asid);
3980                                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
3981                                 addr = 0;
3982                                 return handle_bp_command_set(CMD, addr, asid, length, hw);
3983                         }
3984                         /* fallthrough */
3985                 case 4:
3986                         hw = BKPT_HARD;
3987                         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
3988                         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], asid);
3989                         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], length);
3990                         return handle_bp_command_set(CMD, addr, asid, length, hw);
3991
3992                 default:
3993                         return ERROR_COMMAND_SYNTAX_ERROR;
3994         }
3995 }
3996
3997 COMMAND_HANDLER(handle_rbp_command)
3998 {
3999         if (CMD_ARGC != 1)
4000                 return ERROR_COMMAND_SYNTAX_ERROR;
4001
4002         struct target *target = get_current_target(CMD_CTX);
4003
4004         if (!strcmp(CMD_ARGV[0], "all")) {
4005                 breakpoint_remove_all(target);
4006         } else {
4007                 target_addr_t addr;
4008                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
4009
4010                 breakpoint_remove(target, addr);
4011         }
4012
4013         return ERROR_OK;
4014 }
4015
4016 COMMAND_HANDLER(handle_wp_command)
4017 {
4018         struct target *target = get_current_target(CMD_CTX);
4019
4020         if (CMD_ARGC == 0) {
4021                 struct watchpoint *watchpoint = target->watchpoints;
4022
4023                 while (watchpoint) {
4024                         command_print(CMD, "address: " TARGET_ADDR_FMT
4025                                         ", len: 0x%8.8" PRIx32
4026                                         ", r/w/a: %i, value: 0x%8.8" PRIx32
4027                                         ", mask: 0x%8.8" PRIx32,
4028                                         watchpoint->address,
4029                                         watchpoint->length,
4030                                         (int)watchpoint->rw,
4031                                         watchpoint->value,
4032                                         watchpoint->mask);
4033                         watchpoint = watchpoint->next;
4034                 }
4035                 return ERROR_OK;
4036         }
4037
4038         enum watchpoint_rw type = WPT_ACCESS;
4039         uint32_t addr = 0;
4040         uint32_t length = 0;
4041         uint32_t data_value = 0x0;
4042         uint32_t data_mask = 0xffffffff;
4043
4044         switch (CMD_ARGC) {
4045         case 5:
4046                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[4], data_mask);
4047                 /* fall through */
4048         case 4:
4049                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[3], data_value);
4050                 /* fall through */
4051         case 3:
4052                 switch (CMD_ARGV[2][0]) {
4053                 case 'r':
4054                         type = WPT_READ;
4055                         break;
4056                 case 'w':
4057                         type = WPT_WRITE;
4058                         break;
4059                 case 'a':
4060                         type = WPT_ACCESS;
4061                         break;
4062                 default:
4063                         LOG_ERROR("invalid watchpoint mode ('%c')", CMD_ARGV[2][0]);
4064                         return ERROR_COMMAND_SYNTAX_ERROR;
4065                 }
4066                 /* fall through */
4067         case 2:
4068                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
4069                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], addr);
4070                 break;
4071
4072         default:
4073                 return ERROR_COMMAND_SYNTAX_ERROR;
4074         }
4075
4076         int retval = watchpoint_add(target, addr, length, type,
4077                         data_value, data_mask);
4078         if (ERROR_OK != retval)
4079                 LOG_ERROR("Failure setting watchpoints");
4080
4081         return retval;
4082 }
4083
4084 COMMAND_HANDLER(handle_rwp_command)
4085 {
4086         if (CMD_ARGC != 1)
4087                 return ERROR_COMMAND_SYNTAX_ERROR;
4088
4089         uint32_t addr;
4090         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], addr);
4091
4092         struct target *target = get_current_target(CMD_CTX);
4093         watchpoint_remove(target, addr);
4094
4095         return ERROR_OK;
4096 }
4097
4098 /**
4099  * Translate a virtual address to a physical address.
4100  *
4101  * The low-level target implementation must have logged a detailed error
4102  * which is forwarded to telnet/GDB session.
4103  */
4104 COMMAND_HANDLER(handle_virt2phys_command)
4105 {
4106         if (CMD_ARGC != 1)
4107                 return ERROR_COMMAND_SYNTAX_ERROR;
4108
4109         target_addr_t va;
4110         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], va);
4111         target_addr_t pa;
4112
4113         struct target *target = get_current_target(CMD_CTX);
4114         int retval = target->type->virt2phys(target, va, &pa);
4115         if (retval == ERROR_OK)
4116                 command_print(CMD, "Physical address " TARGET_ADDR_FMT "", pa);
4117
4118         return retval;
4119 }
4120
4121 static void writeData(FILE *f, const void *data, size_t len)
4122 {
4123         size_t written = fwrite(data, 1, len, f);
4124         if (written != len)
4125                 LOG_ERROR("failed to write %zu bytes: %s", len, strerror(errno));
4126 }
4127
4128 static void writeLong(FILE *f, int l, struct target *target)
4129 {
4130         uint8_t val[4];
4131
4132         target_buffer_set_u32(target, val, l);
4133         writeData(f, val, 4);
4134 }
4135
4136 static void writeString(FILE *f, char *s)
4137 {
4138         writeData(f, s, strlen(s));
4139 }
4140
4141 typedef unsigned char UNIT[2];  /* unit of profiling */
4142
4143 /* Dump a gmon.out histogram file. */
4144 static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filename, bool with_range,
4145                         uint32_t start_address, uint32_t end_address, struct target *target, uint32_t duration_ms)
4146 {
4147         uint32_t i;
4148         FILE *f = fopen(filename, "w");
4149         if (f == NULL)
4150                 return;
4151         writeString(f, "gmon");
4152         writeLong(f, 0x00000001, target); /* Version */
4153         writeLong(f, 0, target); /* padding */
4154         writeLong(f, 0, target); /* padding */
4155         writeLong(f, 0, target); /* padding */
4156
4157         uint8_t zero = 0;  /* GMON_TAG_TIME_HIST */
4158         writeData(f, &zero, 1);
4159
4160         /* figure out bucket size */
4161         uint32_t min;
4162         uint32_t max;
4163         if (with_range) {
4164                 min = start_address;
4165                 max = end_address;
4166         } else {
4167                 min = samples[0];
4168                 max = samples[0];
4169                 for (i = 0; i < sampleNum; i++) {
4170                         if (min > samples[i])
4171                                 min = samples[i];
4172                         if (max < samples[i])
4173                                 max = samples[i];
4174                 }
4175
4176                 /* max should be (largest sample + 1)
4177                  * Refer to binutils/gprof/hist.c (find_histogram_for_pc) */
4178                 max++;
4179         }
4180
4181         int addressSpace = max - min;
4182         assert(addressSpace >= 2);
4183
4184         /* FIXME: What is the reasonable number of buckets?
4185          * The profiling result will be more accurate if there are enough buckets. */
4186         static const uint32_t maxBuckets = 128 * 1024; /* maximum buckets. */
4187         uint32_t numBuckets = addressSpace / sizeof(UNIT);
4188         if (numBuckets > maxBuckets)
4189                 numBuckets = maxBuckets;
4190         int *buckets = malloc(sizeof(int) * numBuckets);
4191         if (buckets == NULL) {
4192                 fclose(f);
4193                 return;
4194         }
4195         memset(buckets, 0, sizeof(int) * numBuckets);
4196         for (i = 0; i < sampleNum; i++) {
4197                 uint32_t address = samples[i];
4198
4199                 if ((address < min) || (max <= address))
4200                         continue;
4201
4202                 long long a = address - min;
4203                 long long b = numBuckets;
4204                 long long c = addressSpace;
4205                 int index_t = (a * b) / c; /* danger!!!! int32 overflows */
4206                 buckets[index_t]++;
4207         }
4208
4209         /* append binary memory gmon.out &profile_hist_hdr ((char*)&profile_hist_hdr + sizeof(struct gmon_hist_hdr)) */
4210         writeLong(f, min, target);                      /* low_pc */
4211         writeLong(f, max, target);                      /* high_pc */
4212         writeLong(f, numBuckets, target);       /* # of buckets */
4213         float sample_rate = sampleNum / (duration_ms / 1000.0);
4214         writeLong(f, sample_rate, target);
4215         writeString(f, "seconds");
4216         for (i = 0; i < (15-strlen("seconds")); i++)
4217                 writeData(f, &zero, 1);
4218         writeString(f, "s");
4219
4220         /*append binary memory gmon.out profile_hist_data (profile_hist_data + profile_hist_hdr.hist_size) */
4221
4222         char *data = malloc(2 * numBuckets);
4223         if (data != NULL) {
4224                 for (i = 0; i < numBuckets; i++) {
4225                         int val;
4226                         val = buckets[i];
4227                         if (val > 65535)
4228                                 val = 65535;
4229                         data[i * 2] = val&0xff;
4230                         data[i * 2 + 1] = (val >> 8) & 0xff;
4231                 }
4232                 free(buckets);
4233                 writeData(f, data, numBuckets * 2);
4234                 free(data);
4235         } else
4236                 free(buckets);
4237
4238         fclose(f);
4239 }
4240
4241 /* profiling samples the CPU PC as quickly as OpenOCD is able,
4242  * which will be used as a random sampling of PC */
4243 COMMAND_HANDLER(handle_profile_command)
4244 {
4245         struct target *target = get_current_target(CMD_CTX);
4246
4247         if ((CMD_ARGC != 2) && (CMD_ARGC != 4))
4248                 return ERROR_COMMAND_SYNTAX_ERROR;
4249
4250         const uint32_t MAX_PROFILE_SAMPLE_NUM = 10000;
4251         uint32_t offset;
4252         uint32_t num_of_samples;
4253         int retval = ERROR_OK;
4254         bool halted_before_profiling = target->state == TARGET_HALTED;
4255
4256         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], offset);
4257
4258         uint32_t *samples = malloc(sizeof(uint32_t) * MAX_PROFILE_SAMPLE_NUM);
4259         if (samples == NULL) {
4260                 LOG_ERROR("No memory to store samples.");
4261                 return ERROR_FAIL;
4262         }
4263
4264         uint64_t timestart_ms = timeval_ms();
4265         /**
4266          * Some cores let us sample the PC without the
4267          * annoying halt/resume step; for example, ARMv7 PCSR.
4268          * Provide a way to use that more efficient mechanism.
4269          */
4270         retval = target_profiling(target, samples, MAX_PROFILE_SAMPLE_NUM,
4271                                 &num_of_samples, offset);
4272         if (retval != ERROR_OK) {
4273                 free(samples);
4274                 return retval;
4275         }
4276         uint32_t duration_ms = timeval_ms() - timestart_ms;
4277
4278         assert(num_of_samples <= MAX_PROFILE_SAMPLE_NUM);
4279
4280         retval = target_poll(target);
4281         if (retval != ERROR_OK) {
4282                 free(samples);
4283                 return retval;
4284         }
4285
4286         if (target->state == TARGET_RUNNING && halted_before_profiling) {
4287                 /* The target was halted before we started and is running now. Halt it,
4288                  * for consistency. */
4289                 retval = target_halt(target);
4290                 if (retval != ERROR_OK) {
4291                         free(samples);
4292                         return retval;
4293                 }
4294         } else if (target->state == TARGET_HALTED && !halted_before_profiling) {
4295                 /* The target was running before we started and is halted now. Resume
4296                  * it, for consistency. */
4297                 retval = target_resume(target, 1, 0, 0, 0);
4298                 if (retval != ERROR_OK) {
4299                         free(samples);
4300                         return retval;
4301                 }
4302         }
4303
4304         retval = target_poll(target);
4305         if (retval != ERROR_OK) {
4306                 free(samples);
4307                 return retval;
4308         }
4309
4310         uint32_t start_address = 0;
4311         uint32_t end_address = 0;
4312         bool with_range = false;
4313         if (CMD_ARGC == 4) {
4314                 with_range = true;
4315                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], start_address);
4316                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[3], end_address);
4317         }
4318
4319         write_gmon(samples, num_of_samples, CMD_ARGV[1],
4320                    with_range, start_address, end_address, target, duration_ms);
4321         command_print(CMD, "Wrote %s", CMD_ARGV[1]);
4322
4323         free(samples);
4324         return retval;
4325 }
4326
4327 static int new_int_array_element(Jim_Interp *interp, const char *varname, int idx, uint32_t val)
4328 {
4329         char *namebuf;
4330         Jim_Obj *nameObjPtr, *valObjPtr;
4331         int result;
4332
4333         namebuf = alloc_printf("%s(%d)", varname, idx);
4334         if (!namebuf)
4335                 return JIM_ERR;
4336
4337         nameObjPtr = Jim_NewStringObj(interp, namebuf, -1);
4338         valObjPtr = Jim_NewIntObj(interp, val);
4339         if (!nameObjPtr || !valObjPtr) {
4340                 free(namebuf);
4341                 return JIM_ERR;
4342         }
4343
4344         Jim_IncrRefCount(nameObjPtr);
4345         Jim_IncrRefCount(valObjPtr);
4346         result = Jim_SetVariable(interp, nameObjPtr, valObjPtr);
4347         Jim_DecrRefCount(interp, nameObjPtr);
4348         Jim_DecrRefCount(interp, valObjPtr);
4349         free(namebuf);
4350         /* printf("%s(%d) <= 0%08x\n", varname, idx, val); */
4351         return result;
4352 }
4353
4354 static int jim_mem2array(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
4355 {
4356         struct command_context *context;
4357         struct target *target;
4358
4359         context = current_command_context(interp);
4360         assert(context != NULL);
4361
4362         target = get_current_target(context);
4363         if (target == NULL) {
4364                 LOG_ERROR("mem2array: no current target");
4365                 return JIM_ERR;
4366         }
4367
4368         return target_mem2array(interp, target, argc - 1, argv + 1);
4369 }
4370
4371 static int target_mem2array(Jim_Interp *interp, struct target *target, int argc, Jim_Obj *const *argv)
4372 {
4373         long l;
4374         uint32_t width;
4375         int len;
4376         uint32_t addr;
4377         uint32_t count;
4378         uint32_t v;
4379         const char *varname;
4380         const char *phys;
4381         bool is_phys;
4382         int  n, e, retval;
4383         uint32_t i;
4384
4385         /* argv[1] = name of array to receive the data
4386          * argv[2] = desired width
4387          * argv[3] = memory address
4388          * argv[4] = count of times to read
4389          */
4390
4391         if (argc < 4 || argc > 5) {
4392                 Jim_WrongNumArgs(interp, 0, argv, "varname width addr nelems [phys]");
4393                 return JIM_ERR;
4394         }
4395         varname = Jim_GetString(argv[0], &len);
4396         /* given "foo" get space for worse case "foo(%d)" .. add 20 */
4397
4398         e = Jim_GetLong(interp, argv[1], &l);
4399         width = l;
4400         if (e != JIM_OK)
4401                 return e;
4402
4403         e = Jim_GetLong(interp, argv[2], &l);
4404         addr = l;
4405         if (e != JIM_OK)
4406                 return e;
4407         e = Jim_GetLong(interp, argv[3], &l);
4408         len = l;
4409         if (e != JIM_OK)
4410                 return e;
4411         is_phys = false;
4412         if (argc > 4) {
4413                 phys = Jim_GetString(argv[4], &n);
4414                 if (!strncmp(phys, "phys", n))
4415                         is_phys = true;
4416                 else
4417                         return JIM_ERR;
4418         }
4419         switch (width) {
4420                 case 8:
4421                         width = 1;
4422                         break;
4423                 case 16:
4424                         width = 2;
4425                         break;
4426                 case 32:
4427                         width = 4;
4428                         break;
4429                 default:
4430                         Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4431                         Jim_AppendStrings(interp, Jim_GetResult(interp), "Invalid width param, must be 8/16/32", NULL);
4432                         return JIM_ERR;
4433         }
4434         if (len == 0) {
4435                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4436                 Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: zero width read?", NULL);
4437                 return JIM_ERR;
4438         }
4439         if ((addr + (len * width)) < addr) {
4440                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4441                 Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: addr + len - wraps to zero?", NULL);
4442                 return JIM_ERR;
4443         }
4444         /* absurd transfer size? */
4445         if (len > 65536) {
4446                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4447                 Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: absurd > 64K item request", NULL);
4448                 return JIM_ERR;
4449         }
4450
4451         if ((width == 1) ||
4452                 ((width == 2) && ((addr & 1) == 0)) ||
4453                 ((width == 4) && ((addr & 3) == 0))) {
4454                 /* all is well */
4455         } else {
4456                 char buf[100];
4457                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4458                 sprintf(buf, "mem2array address: 0x%08" PRIx32 " is not aligned for %" PRIu32 " byte reads",
4459                                 addr,
4460                                 width);
4461                 Jim_AppendStrings(interp, Jim_GetResult(interp), buf, NULL);
4462                 return JIM_ERR;
4463         }
4464
4465         /* Transfer loop */
4466
4467         /* index counter */
4468         n = 0;
4469
4470         size_t buffersize = 4096;
4471         uint8_t *buffer = malloc(buffersize);
4472         if (buffer == NULL)
4473                 return JIM_ERR;
4474
4475         /* assume ok */
4476         e = JIM_OK;
4477         while (len) {
4478                 /* Slurp... in buffer size chunks */
4479
4480                 count = len; /* in objects.. */
4481                 if (count > (buffersize / width))
4482                         count = (buffersize / width);
4483
4484                 if (is_phys)
4485                         retval = target_read_phys_memory(target, addr, width, count, buffer);
4486                 else
4487                         retval = target_read_memory(target, addr, width, count, buffer);
4488                 if (retval != ERROR_OK) {
4489                         /* BOO !*/
4490                         LOG_ERROR("mem2array: Read @ 0x%08" PRIx32 ", w=%" PRIu32 ", cnt=%" PRIu32 ", failed",
4491                                           addr,
4492                                           width,
4493                                           count);
4494                         Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4495                         Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: cannot read memory", NULL);
4496                         e = JIM_ERR;
4497                         break;
4498                 } else {
4499                         v = 0; /* shut up gcc */
4500                         for (i = 0; i < count ; i++, n++) {
4501                                 switch (width) {
4502                                         case 4:
4503                                                 v = target_buffer_get_u32(target, &buffer[i*width]);
4504                                                 break;
4505                                         case 2:
4506                                                 v = target_buffer_get_u16(target, &buffer[i*width]);
4507                                                 break;
4508                                         case 1:
4509                                                 v = buffer[i] & 0x0ff;
4510                                                 break;
4511                                 }
4512                                 new_int_array_element(interp, varname, n, v);
4513                         }
4514                         len -= count;
4515                         addr += count * width;
4516                 }
4517         }
4518
4519         free(buffer);
4520
4521         Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4522
4523         return e;
4524 }
4525
4526 static int get_int_array_element(Jim_Interp *interp, const char *varname, int idx, uint32_t *val)
4527 {
4528         char *namebuf;
4529         Jim_Obj *nameObjPtr, *valObjPtr;
4530         int result;
4531         long l;
4532
4533         namebuf = alloc_printf("%s(%d)", varname, idx);
4534         if (!namebuf)
4535                 return JIM_ERR;
4536
4537         nameObjPtr = Jim_NewStringObj(interp, namebuf, -1);
4538         if (!nameObjPtr) {
4539                 free(namebuf);
4540                 return JIM_ERR;
4541         }
4542
4543         Jim_IncrRefCount(nameObjPtr);
4544         valObjPtr = Jim_GetVariable(interp, nameObjPtr, JIM_ERRMSG);
4545         Jim_DecrRefCount(interp, nameObjPtr);
4546         free(namebuf);
4547         if (valObjPtr == NULL)
4548                 return JIM_ERR;
4549
4550         result = Jim_GetLong(interp, valObjPtr, &l);
4551         /* printf("%s(%d) => 0%08x\n", varname, idx, val); */
4552         *val = l;
4553         return result;
4554 }
4555
4556 static int jim_array2mem(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
4557 {
4558         struct command_context *context;
4559         struct target *target;
4560
4561         context = current_command_context(interp);
4562         assert(context != NULL);
4563
4564         target = get_current_target(context);
4565         if (target == NULL) {
4566                 LOG_ERROR("array2mem: no current target");
4567                 return JIM_ERR;
4568         }
4569
4570         return target_array2mem(interp, target, argc-1, argv + 1);
4571 }
4572
4573 static int target_array2mem(Jim_Interp *interp, struct target *target,
4574                 int argc, Jim_Obj *const *argv)
4575 {
4576         long l;
4577         uint32_t width;
4578         int len;
4579         uint32_t addr;
4580         uint32_t count;
4581         uint32_t v;
4582         const char *varname;
4583         const char *phys;
4584         bool is_phys;
4585         int  n, e, retval;
4586         uint32_t i;
4587
4588         /* argv[1] = name of array to get the data
4589          * argv[2] = desired width
4590          * argv[3] = memory address
4591          * argv[4] = count to write
4592          */
4593         if (argc < 4 || argc > 5) {
4594                 Jim_WrongNumArgs(interp, 0, argv, "varname width addr nelems [phys]");
4595                 return JIM_ERR;
4596         }
4597         varname = Jim_GetString(argv[0], &len);
4598         /* given "foo" get space for worse case "foo(%d)" .. add 20 */
4599
4600         e = Jim_GetLong(interp, argv[1], &l);
4601         width = l;
4602         if (e != JIM_OK)
4603                 return e;
4604
4605         e = Jim_GetLong(interp, argv[2], &l);
4606         addr = l;
4607         if (e != JIM_OK)
4608                 return e;
4609         e = Jim_GetLong(interp, argv[3], &l);
4610         len = l;
4611         if (e != JIM_OK)
4612                 return e;
4613         is_phys = false;
4614         if (argc > 4) {
4615                 phys = Jim_GetString(argv[4], &n);
4616                 if (!strncmp(phys, "phys", n))
4617                         is_phys = true;
4618                 else
4619                         return JIM_ERR;
4620         }
4621         switch (width) {
4622                 case 8:
4623                         width = 1;
4624                         break;
4625                 case 16:
4626                         width = 2;
4627                         break;
4628                 case 32:
4629                         width = 4;
4630                         break;
4631                 default:
4632                         Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4633                         Jim_AppendStrings(interp, Jim_GetResult(interp),
4634                                         "Invalid width param, must be 8/16/32", NULL);
4635                         return JIM_ERR;
4636         }
4637         if (len == 0) {
4638                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4639                 Jim_AppendStrings(interp, Jim_GetResult(interp),
4640                                 "array2mem: zero width read?", NULL);
4641                 return JIM_ERR;
4642         }
4643         if ((addr + (len * width)) < addr) {
4644                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4645                 Jim_AppendStrings(interp, Jim_GetResult(interp),
4646                                 "array2mem: addr + len - wraps to zero?", NULL);
4647                 return JIM_ERR;
4648         }
4649         /* absurd transfer size? */
4650         if (len > 65536) {
4651                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4652                 Jim_AppendStrings(interp, Jim_GetResult(interp),
4653                                 "array2mem: absurd > 64K item request", NULL);
4654                 return JIM_ERR;
4655         }
4656
4657         if ((width == 1) ||
4658                 ((width == 2) && ((addr & 1) == 0)) ||
4659                 ((width == 4) && ((addr & 3) == 0))) {
4660                 /* all is well */
4661         } else {
4662                 char buf[100];
4663                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4664                 sprintf(buf, "array2mem address: 0x%08" PRIx32 " is not aligned for %" PRIu32 " byte reads",
4665                                 addr,
4666                                 width);
4667                 Jim_AppendStrings(interp, Jim_GetResult(interp), buf, NULL);
4668                 return JIM_ERR;
4669         }
4670
4671         /* Transfer loop */
4672
4673         /* index counter */
4674         n = 0;
4675         /* assume ok */
4676         e = JIM_OK;
4677
4678         size_t buffersize = 4096;
4679         uint8_t *buffer = malloc(buffersize);
4680         if (buffer == NULL)
4681                 return JIM_ERR;
4682
4683         while (len) {
4684                 /* Slurp... in buffer size chunks */
4685
4686                 count = len; /* in objects.. */
4687                 if (count > (buffersize / width))
4688                         count = (buffersize / width);
4689
4690                 v = 0; /* shut up gcc */
4691                 for (i = 0; i < count; i++, n++) {
4692                         get_int_array_element(interp, varname, n, &v);
4693                         switch (width) {
4694                         case 4:
4695                                 target_buffer_set_u32(target, &buffer[i * width], v);
4696                                 break;
4697                         case 2:
4698                                 target_buffer_set_u16(target, &buffer[i * width], v);
4699                                 break;
4700                         case 1:
4701                                 buffer[i] = v & 0x0ff;
4702                                 break;
4703                         }
4704                 }
4705                 len -= count;
4706
4707                 if (is_phys)
4708                         retval = target_write_phys_memory(target, addr, width, count, buffer);
4709                 else
4710                         retval = target_write_memory(target, addr, width, count, buffer);
4711                 if (retval != ERROR_OK) {
4712                         /* BOO !*/
4713                         LOG_ERROR("array2mem: Write @ 0x%08" PRIx32 ", w=%" PRIu32 ", cnt=%" PRIu32 ", failed",
4714                                           addr,
4715                                           width,
4716                                           count);
4717                         Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4718                         Jim_AppendStrings(interp, Jim_GetResult(interp), "array2mem: cannot read memory", NULL);
4719                         e = JIM_ERR;
4720                         break;
4721                 }
4722                 addr += count * width;
4723         }
4724
4725         free(buffer);
4726
4727         Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
4728
4729         return e;
4730 }
4731
4732 /* FIX? should we propagate errors here rather than printing them
4733  * and continuing?
4734  */
4735 void target_handle_event(struct target *target, enum target_event e)
4736 {
4737         struct target_event_action *teap;
4738         int retval;
4739
4740         for (teap = target->event_action; teap != NULL; teap = teap->next) {
4741                 if (teap->event == e) {
4742                         LOG_DEBUG("target(%d): %s (%s) event: %d (%s) action: %s",
4743                                            target->target_number,
4744                                            target_name(target),
4745                                            target_type_name(target),
4746                                            e,
4747                                            Jim_Nvp_value2name_simple(nvp_target_event, e)->name,
4748                                            Jim_GetString(teap->body, NULL));
4749
4750                         /* Override current target by the target an event
4751                          * is issued from (lot of scripts need it).
4752                          * Return back to previous override as soon
4753                          * as the handler processing is done */
4754                         struct command_context *cmd_ctx = current_command_context(teap->interp);
4755                         struct target *saved_target_override = cmd_ctx->current_target_override;
4756                         cmd_ctx->current_target_override = target;
4757
4758                         retval = Jim_EvalObj(teap->interp, teap->body);
4759
4760                         cmd_ctx->current_target_override = saved_target_override;
4761
4762                         if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
4763                                 return;
4764
4765                         if (retval == JIM_RETURN)
4766                                 retval = teap->interp->returnCode;
4767
4768                         if (retval != JIM_OK) {
4769                                 Jim_MakeErrorMessage(teap->interp);
4770                                 LOG_USER("Error executing event %s on target %s:\n%s",
4771                                                   Jim_Nvp_value2name_simple(nvp_target_event, e)->name,
4772                                                   target_name(target),
4773                                                   Jim_GetString(Jim_GetResult(teap->interp), NULL));
4774                                 /* clean both error code and stacktrace before return */
4775                                 Jim_Eval(teap->interp, "error \"\" \"\"");
4776                         }
4777                 }
4778         }
4779 }
4780
4781 /**
4782  * Returns true only if the target has a handler for the specified event.
4783  */
4784 bool target_has_event_action(struct target *target, enum target_event event)
4785 {
4786         struct target_event_action *teap;
4787
4788         for (teap = target->event_action; teap != NULL; teap = teap->next) {
4789                 if (teap->event == event)
4790                         return true;
4791         }
4792         return false;
4793 }
4794
4795 enum target_cfg_param {
4796         TCFG_TYPE,
4797         TCFG_EVENT,
4798         TCFG_WORK_AREA_VIRT,
4799         TCFG_WORK_AREA_PHYS,
4800         TCFG_WORK_AREA_SIZE,
4801         TCFG_WORK_AREA_BACKUP,
4802         TCFG_ENDIAN,
4803         TCFG_COREID,
4804         TCFG_CHAIN_POSITION,
4805         TCFG_DBGBASE,
4806         TCFG_RTOS,
4807         TCFG_DEFER_EXAMINE,
4808         TCFG_GDB_PORT,
4809         TCFG_GDB_MAX_CONNECTIONS,
4810 };
4811
4812 static Jim_Nvp nvp_config_opts[] = {
4813         { .name = "-type",             .value = TCFG_TYPE },
4814         { .name = "-event",            .value = TCFG_EVENT },
4815         { .name = "-work-area-virt",   .value = TCFG_WORK_AREA_VIRT },
4816         { .name = "-work-area-phys",   .value = TCFG_WORK_AREA_PHYS },
4817         { .name = "-work-area-size",   .value = TCFG_WORK_AREA_SIZE },
4818         { .name = "-work-area-backup", .value = TCFG_WORK_AREA_BACKUP },
4819         { .name = "-endian",           .value = TCFG_ENDIAN },
4820         { .name = "-coreid",           .value = TCFG_COREID },
4821         { .name = "-chain-position",   .value = TCFG_CHAIN_POSITION },
4822         { .name = "-dbgbase",          .value = TCFG_DBGBASE },
4823         { .name = "-rtos",             .value = TCFG_RTOS },
4824         { .name = "-defer-examine",    .value = TCFG_DEFER_EXAMINE },
4825         { .name = "-gdb-port",         .value = TCFG_GDB_PORT },
4826         { .name = "-gdb-max-connections",   .value = TCFG_GDB_MAX_CONNECTIONS },
4827         { .name = NULL, .value = -1 }
4828 };
4829
4830 static int target_configure(Jim_GetOptInfo *goi, struct target *target)
4831 {
4832         Jim_Nvp *n;
4833         Jim_Obj *o;
4834         jim_wide w;
4835         int e;
4836
4837         /* parse config or cget options ... */
4838         while (goi->argc > 0) {
4839                 Jim_SetEmptyResult(goi->interp);
4840                 /* Jim_GetOpt_Debug(goi); */
4841
4842                 if (target->type->target_jim_configure) {
4843                         /* target defines a configure function */
4844                         /* target gets first dibs on parameters */
4845                         e = (*(target->type->target_jim_configure))(target, goi);
4846                         if (e == JIM_OK) {
4847                                 /* more? */
4848                                 continue;
4849                         }
4850                         if (e == JIM_ERR) {
4851                                 /* An error */
4852                                 return e;
4853                         }
4854                         /* otherwise we 'continue' below */
4855                 }
4856                 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
4857                 if (e != JIM_OK) {
4858                         Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
4859                         return e;
4860                 }
4861                 switch (n->value) {
4862                 case TCFG_TYPE:
4863                         /* not settable */
4864                         if (goi->isconfigure) {
4865                                 Jim_SetResultFormatted(goi->interp,
4866                                                 "not settable: %s", n->name);
4867                                 return JIM_ERR;
4868                         } else {
4869 no_params:
4870                                 if (goi->argc != 0) {
4871                                         Jim_WrongNumArgs(goi->interp,
4872                                                         goi->argc, goi->argv,
4873                                                         "NO PARAMS");
4874                                         return JIM_ERR;
4875                                 }
4876                         }
4877                         Jim_SetResultString(goi->interp,
4878                                         target_type_name(target), -1);
4879                         /* loop for more */
4880                         break;
4881                 case TCFG_EVENT:
4882                         if (goi->argc == 0) {
4883                                 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ...");
4884                                 return JIM_ERR;
4885                         }
4886
4887                         e = Jim_GetOpt_Nvp(goi, nvp_target_event, &n);
4888                         if (e != JIM_OK) {
4889                                 Jim_GetOpt_NvpUnknown(goi, nvp_target_event, 1);
4890                                 return e;
4891                         }
4892
4893                         if (goi->isconfigure) {
4894                                 if (goi->argc != 1) {
4895                                         Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
4896                                         return JIM_ERR;
4897                                 }
4898                         } else {
4899                                 if (goi->argc != 0) {
4900                                         Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
4901                                         return JIM_ERR;
4902                                 }
4903                         }
4904
4905                         {
4906                                 struct target_event_action *teap;
4907
4908                                 teap = target->event_action;
4909                                 /* replace existing? */
4910                                 while (teap) {
4911                                         if (teap->event == (enum target_event)n->value)
4912                                                 break;
4913                                         teap = teap->next;
4914                                 }
4915
4916                                 if (goi->isconfigure) {
4917                                         bool replace = true;
4918                                         if (teap == NULL) {
4919                                                 /* create new */
4920                                                 teap = calloc(1, sizeof(*teap));
4921                                                 replace = false;
4922                                         }
4923                                         teap->event = n->value;
4924                                         teap->interp = goi->interp;
4925                                         Jim_GetOpt_Obj(goi, &o);
4926                                         if (teap->body)
4927                                                 Jim_DecrRefCount(teap->interp, teap->body);
4928                                         teap->body  = Jim_DuplicateObj(goi->interp, o);
4929                                         /*
4930                                          * FIXME:
4931                                          *     Tcl/TK - "tk events" have a nice feature.
4932                                          *     See the "BIND" command.
4933                                          *    We should support that here.
4934                                          *     You can specify %X and %Y in the event code.
4935                                          *     The idea is: %T - target name.
4936                                          *     The idea is: %N - target number
4937                                          *     The idea is: %E - event name.
4938                                          */
4939                                         Jim_IncrRefCount(teap->body);
4940
4941                                         if (!replace) {
4942                                                 /* add to head of event list */
4943                                                 teap->next = target->event_action;
4944                                                 target->event_action = teap;
4945                                         }
4946                                         Jim_SetEmptyResult(goi->interp);
4947                                 } else {
4948                                         /* get */
4949                                         if (teap == NULL)
4950                                                 Jim_SetEmptyResult(goi->interp);
4951                                         else
4952                                                 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, teap->body));
4953                                 }
4954                         }
4955                         /* loop for more */
4956                         break;
4957
4958                 case TCFG_WORK_AREA_VIRT:
4959                         if (goi->isconfigure) {
4960                                 target_free_all_working_areas(target);
4961                                 e = Jim_GetOpt_Wide(goi, &w);
4962                                 if (e != JIM_OK)
4963                                         return e;
4964                                 target->working_area_virt = w;
4965                                 target->working_area_virt_spec = true;
4966                         } else {
4967                                 if (goi->argc != 0)
4968                                         goto no_params;
4969                         }
4970                         Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->working_area_virt));
4971                         /* loop for more */
4972                         break;
4973
4974                 case TCFG_WORK_AREA_PHYS:
4975                         if (goi->isconfigure) {
4976                                 target_free_all_working_areas(target);
4977                                 e = Jim_GetOpt_Wide(goi, &w);
4978                                 if (e != JIM_OK)
4979                                         return e;
4980                                 target->working_area_phys = w;
4981                                 target->working_area_phys_spec = true;
4982                         } else {
4983                                 if (goi->argc != 0)
4984                                         goto no_params;
4985                         }
4986                         Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->working_area_phys));
4987                         /* loop for more */
4988                         break;
4989
4990                 case TCFG_WORK_AREA_SIZE:
4991                         if (goi->isconfigure) {
4992                                 target_free_all_working_areas(target);
4993                                 e = Jim_GetOpt_Wide(goi, &w);
4994                                 if (e != JIM_OK)
4995                                         return e;
4996                                 target->working_area_size = w;
4997                         } else {
4998                                 if (goi->argc != 0)
4999                                         goto no_params;
5000                         }
5001                         Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->working_area_size));
5002                         /* loop for more */
5003                         break;
5004
5005                 case TCFG_WORK_AREA_BACKUP:
5006                         if (goi->isconfigure) {
5007                                 target_free_all_working_areas(target);
5008                                 e = Jim_GetOpt_Wide(goi, &w);
5009                                 if (e != JIM_OK)
5010                                         return e;
5011                                 /* make this exactly 1 or 0 */
5012                                 target->backup_working_area = (!!w);
5013                         } else {
5014                                 if (goi->argc != 0)
5015                                         goto no_params;
5016                         }
5017                         Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->backup_working_area));
5018                         /* loop for more e*/
5019                         break;
5020
5021
5022                 case TCFG_ENDIAN:
5023                         if (goi->isconfigure) {
5024                                 e = Jim_GetOpt_Nvp(goi, nvp_target_endian, &n);
5025                                 if (e != JIM_OK) {
5026                                         Jim_GetOpt_NvpUnknown(goi, nvp_target_endian, 1);
5027                                         return e;
5028                                 }
5029                                 target->endianness = n->value;
5030                         } else {
5031                                 if (goi->argc != 0)
5032                                         goto no_params;
5033                         }
5034                         n = Jim_Nvp_value2name_simple(nvp_target_endian, target->endianness);
5035                         if (n->name == NULL) {
5036                                 target->endianness = TARGET_LITTLE_ENDIAN;
5037                                 n = Jim_Nvp_value2name_simple(nvp_target_endian, target->endianness);
5038                         }
5039                         Jim_SetResultString(goi->interp, n->name, -1);
5040                         /* loop for more */
5041                         break;
5042
5043                 case TCFG_COREID:
5044                         if (goi->isconfigure) {
5045                                 e = Jim_GetOpt_Wide(goi, &w);
5046                                 if (e != JIM_OK)
5047                                         return e;
5048                                 target->coreid = (int32_t)w;
5049                         } else {
5050                                 if (goi->argc != 0)
5051                                         goto no_params;
5052                         }
5053                         Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->coreid));
5054                         /* loop for more */
5055                         break;
5056
5057                 case TCFG_CHAIN_POSITION:
5058                         if (goi->isconfigure) {
5059                                 Jim_Obj *o_t;
5060                                 struct jtag_tap *tap;
5061
5062                                 if (target->has_dap) {
5063                                         Jim_SetResultString(goi->interp,
5064                                                 "target requires -dap parameter instead of -chain-position!", -1);
5065                                         return JIM_ERR;
5066                                 }
5067
5068                                 target_free_all_working_areas(target);
5069                                 e = Jim_GetOpt_Obj(goi, &o_t);
5070                                 if (e != JIM_OK)
5071                                         return e;
5072                                 tap = jtag_tap_by_jim_obj(goi->interp, o_t);
5073                                 if (tap == NULL)
5074                                         return JIM_ERR;
5075                                 target->tap = tap;
5076                                 target->tap_configured = true;
5077                         } else {
5078                                 if (goi->argc != 0)
5079                                         goto no_params;
5080                         }
5081                         Jim_SetResultString(goi->interp, target->tap->dotted_name, -1);
5082                         /* loop for more e*/
5083                         break;
5084                 case TCFG_DBGBASE:
5085                         if (goi->isconfigure) {
5086                                 e = Jim_GetOpt_Wide(goi, &w);
5087                                 if (e != JIM_OK)
5088                                         return e;
5089                                 target->dbgbase = (uint32_t)w;
5090                                 target->dbgbase_set = true;
5091                         } else {
5092                                 if (goi->argc != 0)
5093                                         goto no_params;
5094                         }
5095                         Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->dbgbase));
5096                         /* loop for more */
5097                         break;
5098                 case TCFG_RTOS:
5099                         /* RTOS */
5100                         {
5101                                 int result = rtos_create(goi, target);
5102                                 if (result != JIM_OK)
5103                                         return result;
5104                         }
5105                         /* loop for more */
5106                         break;
5107
5108                 case TCFG_DEFER_EXAMINE:
5109                         /* DEFER_EXAMINE */
5110                         target->defer_examine = true;
5111                         /* loop for more */
5112                         break;
5113
5114                 case TCFG_GDB_PORT:
5115                         if (goi->isconfigure) {
5116                                 struct command_context *cmd_ctx = current_command_context(goi->interp);
5117                                 if (cmd_ctx->mode != COMMAND_CONFIG) {
5118                                         Jim_SetResultString(goi->interp, "-gdb-port must be configured before 'init'", -1);
5119                                         return JIM_ERR;
5120                                 }
5121
5122                                 const char *s;
5123                                 e = Jim_GetOpt_String(goi, &s, NULL);
5124                                 if (e != JIM_OK)
5125                                         return e;
5126                                 target->gdb_port_override = strdup(s);
5127                         } else {
5128                                 if (goi->argc != 0)
5129                                         goto no_params;
5130                         }
5131                         Jim_SetResultString(goi->interp, target->gdb_port_override ? : "undefined", -1);
5132                         /* loop for more */
5133                         break;
5134
5135                 case TCFG_GDB_MAX_CONNECTIONS:
5136                         if (goi->isconfigure) {
5137                                 struct command_context *cmd_ctx = current_command_context(goi->interp);
5138                                 if (cmd_ctx->mode != COMMAND_CONFIG) {
5139                                         Jim_SetResultString(goi->interp, "-gdb-max-conenctions must be configured before 'init'", -1);
5140                                         return JIM_ERR;
5141                                 }
5142
5143                                 e = Jim_GetOpt_Wide(goi, &w);
5144                                 if (e != JIM_OK)
5145                                         return e;
5146                                 target->gdb_max_connections = (w < 0) ? CONNECTION_LIMIT_UNLIMITED : (int)w;
5147                         } else {
5148                                 if (goi->argc != 0)
5149                                         goto no_params;
5150                         }
5151                         Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->gdb_max_connections));
5152                         break;
5153                 }
5154         } /* while (goi->argc) */
5155
5156
5157                 /* done - we return */
5158         return JIM_OK;
5159 }
5160
5161 static int jim_target_configure(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
5162 {
5163         Jim_GetOptInfo goi;
5164
5165         Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
5166         goi.isconfigure = !strcmp(Jim_GetString(argv[0], NULL), "configure");
5167         if (goi.argc < 1) {
5168                 Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
5169                                  "missing: -option ...");
5170                 return JIM_ERR;
5171         }
5172         struct target *target = Jim_CmdPrivData(goi.interp);
5173         return target_configure(&goi, target);
5174 }
5175
5176 static int jim_target_mem2array(Jim_Interp *interp,
5177                 int argc, Jim_Obj *const *argv)
5178 {
5179         struct target *target = Jim_CmdPrivData(interp);
5180         return target_mem2array(interp, target, argc - 1, argv + 1);
5181 }
5182
5183 static int jim_target_array2mem(Jim_Interp *interp,
5184                 int argc, Jim_Obj *const *argv)
5185 {
5186         struct target *target = Jim_CmdPrivData(interp);
5187         return target_array2mem(interp, target, argc - 1, argv + 1);
5188 }
5189
5190 static int jim_target_tap_disabled(Jim_Interp *interp)
5191 {
5192         Jim_SetResultFormatted(interp, "[TAP is disabled]");
5193         return JIM_ERR;
5194 }
5195
5196 static int jim_target_examine(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5197 {
5198         bool allow_defer = false;
5199
5200         Jim_GetOptInfo goi;
5201         Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
5202         if (goi.argc > 1) {
5203                 const char *cmd_name = Jim_GetString(argv[0], NULL);
5204                 Jim_SetResultFormatted(goi.interp,
5205                                 "usage: %s ['allow-defer']", cmd_name);
5206                 return JIM_ERR;
5207         }
5208         if (goi.argc > 0 &&
5209             strcmp(Jim_GetString(argv[1], NULL), "allow-defer") == 0) {
5210                 /* consume it */
5211                 Jim_Obj *obj;
5212                 int e = Jim_GetOpt_Obj(&goi, &obj);
5213                 if (e != JIM_OK)
5214                         return e;
5215                 allow_defer = true;
5216         }
5217
5218         struct target *target = Jim_CmdPrivData(interp);
5219         if (!target->tap->enabled)
5220                 return jim_target_tap_disabled(interp);
5221
5222         if (allow_defer && target->defer_examine) {
5223                 LOG_INFO("Deferring arp_examine of %s", target_name(target));
5224                 LOG_INFO("Use arp_examine command to examine it manually!");
5225                 return JIM_OK;
5226         }
5227
5228         int e = target->type->examine(target);
5229         if (e != ERROR_OK)
5230                 return JIM_ERR;
5231         return JIM_OK;
5232 }
5233
5234 static int jim_target_was_examined(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
5235 {
5236         struct target *target = Jim_CmdPrivData(interp);
5237
5238         Jim_SetResultBool(interp, target_was_examined(target));
5239         return JIM_OK;
5240 }
5241
5242 static int jim_target_examine_deferred(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
5243 {
5244         struct target *target = Jim_CmdPrivData(interp);
5245
5246         Jim_SetResultBool(interp, target->defer_examine);
5247         return JIM_OK;
5248 }
5249
5250 static int jim_target_halt_gdb(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5251 {
5252         if (argc != 1) {
5253                 Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
5254                 return JIM_ERR;
5255         }
5256         struct target *target = Jim_CmdPrivData(interp);
5257
5258         if (target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT) != ERROR_OK)
5259                 return JIM_ERR;
5260
5261         return JIM_OK;
5262 }
5263
5264 static int jim_target_poll(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5265 {
5266         if (argc != 1) {
5267                 Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
5268                 return JIM_ERR;
5269         }
5270         struct target *target = Jim_CmdPrivData(interp);
5271         if (!target->tap->enabled)
5272                 return jim_target_tap_disabled(interp);
5273
5274         int e;
5275         if (!(target_was_examined(target)))
5276                 e = ERROR_TARGET_NOT_EXAMINED;
5277         else
5278                 e = target->type->poll(target);
5279         if (e != ERROR_OK)
5280                 return JIM_ERR;
5281         return JIM_OK;
5282 }
5283
5284 static int jim_target_reset(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5285 {
5286         Jim_GetOptInfo goi;
5287         Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
5288
5289         if (goi.argc != 2) {
5290                 Jim_WrongNumArgs(interp, 0, argv,
5291                                 "([tT]|[fF]|assert|deassert) BOOL");
5292                 return JIM_ERR;
5293         }
5294
5295         Jim_Nvp *n;
5296         int e = Jim_GetOpt_Nvp(&goi, nvp_assert, &n);
5297         if (e != JIM_OK) {
5298                 Jim_GetOpt_NvpUnknown(&goi, nvp_assert, 1);
5299                 return e;
5300         }
5301         /* the halt or not param */
5302         jim_wide a;
5303         e = Jim_GetOpt_Wide(&goi, &a);
5304         if (e != JIM_OK)
5305                 return e;
5306
5307         struct target *target = Jim_CmdPrivData(goi.interp);
5308         if (!target->tap->enabled)
5309                 return jim_target_tap_disabled(interp);
5310
5311         if (!target->type->assert_reset || !target->type->deassert_reset) {
5312                 Jim_SetResultFormatted(interp,
5313                                 "No target-specific reset for %s",
5314                                 target_name(target));
5315                 return JIM_ERR;
5316         }
5317
5318         if (target->defer_examine)
5319                 target_reset_examined(target);
5320
5321         /* determine if we should halt or not. */
5322         target->reset_halt = !!a;
5323         /* When this happens - all workareas are invalid. */
5324         target_free_all_working_areas_restore(target, 0);
5325
5326         /* do the assert */
5327         if (n->value == NVP_ASSERT)
5328                 e = target->type->assert_reset(target);
5329         else
5330                 e = target->type->deassert_reset(target);
5331         return (e == ERROR_OK) ? JIM_OK : JIM_ERR;
5332 }
5333
5334 static int jim_target_halt(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5335 {
5336         if (argc != 1) {
5337                 Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
5338                 return JIM_ERR;
5339         }
5340         struct target *target = Jim_CmdPrivData(interp);
5341         if (!target->tap->enabled)
5342                 return jim_target_tap_disabled(interp);
5343         int e = target->type->halt(target);
5344         return (e == ERROR_OK) ? JIM_OK : JIM_ERR;
5345 }
5346
5347 static int jim_target_wait_state(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5348 {
5349         Jim_GetOptInfo goi;
5350         Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
5351
5352         /* params:  <name>  statename timeoutmsecs */
5353         if (goi.argc != 2) {
5354                 const char *cmd_name = Jim_GetString(argv[0], NULL);
5355                 Jim_SetResultFormatted(goi.interp,
5356                                 "%s <state_name> <timeout_in_msec>", cmd_name);
5357                 return JIM_ERR;
5358         }
5359
5360         Jim_Nvp *n;
5361         int e = Jim_GetOpt_Nvp(&goi, nvp_target_state, &n);
5362         if (e != JIM_OK) {
5363                 Jim_GetOpt_NvpUnknown(&goi, nvp_target_state, 1);
5364                 return e;
5365         }
5366         jim_wide a;
5367         e = Jim_GetOpt_Wide(&goi, &a);
5368         if (e != JIM_OK)
5369                 return e;
5370         struct target *target = Jim_CmdPrivData(interp);
5371         if (!target->tap->enabled)
5372                 return jim_target_tap_disabled(interp);
5373
5374         e = target_wait_state(target, n->value, a);
5375         if (e != ERROR_OK) {
5376                 Jim_Obj *eObj = Jim_NewIntObj(interp, e);
5377                 Jim_SetResultFormatted(goi.interp,
5378                                 "target: %s wait %s fails (%#s) %s",
5379                                 target_name(target), n->name,
5380                                 eObj, target_strerror_safe(e));
5381                 return JIM_ERR;
5382         }
5383         return JIM_OK;
5384 }
5385 /* List for human, Events defined for this target.
5386  * scripts/programs should use 'name cget -event NAME'
5387  */
5388 COMMAND_HANDLER(handle_target_event_list)
5389 {
5390         struct target *target = get_current_target(CMD_CTX);
5391         struct target_event_action *teap = target->event_action;
5392
5393         command_print(CMD, "Event actions for target (%d) %s\n",
5394                                    target->target_number,
5395                                    target_name(target));
5396         command_print(CMD, "%-25s | Body", "Event");
5397         command_print(CMD, "------------------------- | "
5398                         "----------------------------------------");
5399         while (teap) {
5400                 Jim_Nvp *opt = Jim_Nvp_value2name_simple(nvp_target_event, teap->event);
5401                 command_print(CMD, "%-25s | %s",
5402                                 opt->name, Jim_GetString(teap->body, NULL));
5403                 teap = teap->next;
5404         }
5405         command_print(CMD, "***END***");
5406         return ERROR_OK;
5407 }
5408 static int jim_target_current_state(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5409 {
5410         if (argc != 1) {
5411                 Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
5412                 return JIM_ERR;
5413         }
5414         struct target *target = Jim_CmdPrivData(interp);
5415         Jim_SetResultString(interp, target_state_name(target), -1);
5416         return JIM_OK;
5417 }
5418 static int jim_target_invoke_event(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5419 {
5420         Jim_GetOptInfo goi;
5421         Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
5422         if (goi.argc != 1) {
5423                 const char *cmd_name = Jim_GetString(argv[0], NULL);
5424                 Jim_SetResultFormatted(goi.interp, "%s <eventname>", cmd_name);
5425                 return JIM_ERR;
5426         }
5427         Jim_Nvp *n;
5428         int e = Jim_GetOpt_Nvp(&goi, nvp_target_event, &n);
5429         if (e != JIM_OK) {
5430                 Jim_GetOpt_NvpUnknown(&goi, nvp_target_event, 1);
5431                 return e;
5432         }
5433         struct target *target = Jim_CmdPrivData(interp);
5434         target_handle_event(target, n->value);
5435         return JIM_OK;
5436 }
5437
5438 static const struct command_registration target_instance_command_handlers[] = {
5439         {
5440                 .name = "configure",
5441                 .mode = COMMAND_ANY,
5442                 .jim_handler = jim_target_configure,
5443                 .help  = "configure a new target for use",
5444                 .usage = "[target_attribute ...]",
5445         },
5446         {
5447                 .name = "cget",
5448                 .mode = COMMAND_ANY,
5449                 .jim_handler = jim_target_configure,
5450                 .help  = "returns the specified target attribute",
5451                 .usage = "target_attribute",
5452         },
5453         {
5454                 .name = "mwd",
5455                 .handler = handle_mw_command,
5456                 .mode = COMMAND_EXEC,
5457                 .help = "Write 64-bit word(s) to target memory",
5458                 .usage = "address data [count]",
5459         },
5460         {
5461                 .name = "mww",
5462                 .handler = handle_mw_command,
5463                 .mode = COMMAND_EXEC,
5464                 .help = "Write 32-bit word(s) to target memory",
5465                 .usage = "address data [count]",
5466         },
5467         {
5468                 .name = "mwh",
5469                 .handler = handle_mw_command,
5470                 .mode = COMMAND_EXEC,
5471                 .help = "Write 16-bit half-word(s) to target memory",
5472                 .usage = "address data [count]",
5473         },
5474         {
5475                 .name = "mwb",
5476                 .handler = handle_mw_command,
5477                 .mode = COMMAND_EXEC,
5478                 .help = "Write byte(s) to target memory",
5479                 .usage = "address data [count]",
5480         },
5481         {
5482                 .name = "mdd",
5483                 .handler = handle_md_command,
5484                 .mode = COMMAND_EXEC,
5485                 .help = "Display target memory as 64-bit words",
5486                 .usage = "address [count]",
5487         },
5488         {
5489                 .name = "mdw",
5490                 .handler = handle_md_command,
5491                 .mode = COMMAND_EXEC,
5492                 .help = "Display target memory as 32-bit words",
5493                 .usage = "address [count]",
5494         },
5495         {
5496                 .name = "mdh",
5497                 .handler = handle_md_command,
5498                 .mode = COMMAND_EXEC,
5499                 .help = "Display target memory as 16-bit half-words",
5500                 .usage = "address [count]",
5501         },
5502         {
5503                 .name = "mdb",
5504                 .handler = handle_md_command,
5505                 .mode = COMMAND_EXEC,
5506                 .help = "Display target memory as 8-bit bytes",
5507                 .usage = "address [count]",
5508         },
5509         {
5510                 .name = "array2mem",
5511                 .mode = COMMAND_EXEC,
5512                 .jim_handler = jim_target_array2mem,
5513                 .help = "Writes Tcl array of 8/16/32 bit numbers "
5514                         "to target memory",
5515                 .usage = "arrayname bitwidth address count",
5516         },
5517         {
5518                 .name = "mem2array",
5519                 .mode = COMMAND_EXEC,
5520                 .jim_handler = jim_target_mem2array,
5521                 .help = "Loads Tcl array of 8/16/32 bit numbers "
5522                         "from target memory",
5523                 .usage = "arrayname bitwidth address count",
5524         },
5525         {
5526                 .name = "eventlist",
5527                 .handler = handle_target_event_list,
5528                 .mode = COMMAND_EXEC,
5529                 .help = "displays a table of events defined for this target",
5530                 .usage = "",
5531         },
5532         {
5533                 .name = "curstate",
5534                 .mode = COMMAND_EXEC,
5535                 .jim_handler = jim_target_current_state,
5536                 .help = "displays the current state of this target",
5537         },
5538         {
5539                 .name = "arp_examine",
5540                 .mode = COMMAND_EXEC,
5541                 .jim_handler = jim_target_examine,
5542                 .help = "used internally for reset processing",
5543                 .usage = "['allow-defer']",
5544         },
5545         {
5546                 .name = "was_examined",
5547                 .mode = COMMAND_EXEC,
5548                 .jim_handler = jim_target_was_examined,
5549                 .help = "used internally for reset processing",
5550         },
5551         {
5552                 .name = "examine_deferred",
5553                 .mode = COMMAND_EXEC,
5554                 .jim_handler = jim_target_examine_deferred,
5555                 .help = "used internally for reset processing",
5556         },
5557         {
5558                 .name = "arp_halt_gdb",
5559                 .mode = COMMAND_EXEC,
5560                 .jim_handler = jim_target_halt_gdb,
5561                 .help = "used internally for reset processing to halt GDB",
5562         },
5563         {
5564                 .name = "arp_poll",
5565                 .mode = COMMAND_EXEC,
5566                 .jim_handler = jim_target_poll,
5567                 .help = "used internally for reset processing",
5568         },
5569         {
5570                 .name = "arp_reset",
5571                 .mode = COMMAND_EXEC,
5572                 .jim_handler = jim_target_reset,
5573                 .help = "used internally for reset processing",
5574         },
5575         {
5576                 .name = "arp_halt",
5577                 .mode = COMMAND_EXEC,
5578                 .jim_handler = jim_target_halt,
5579                 .help = "used internally for reset processing",
5580         },
5581         {
5582                 .name = "arp_waitstate",
5583                 .mode = COMMAND_EXEC,
5584                 .jim_handler = jim_target_wait_state,
5585                 .help = "used internally for reset processing",
5586         },
5587         {
5588                 .name = "invoke-event",
5589                 .mode = COMMAND_EXEC,
5590                 .jim_handler = jim_target_invoke_event,
5591                 .help = "invoke handler for specified event",
5592                 .usage = "event_name",
5593         },
5594         COMMAND_REGISTRATION_DONE
5595 };
5596
5597 static int target_create(Jim_GetOptInfo *goi)
5598 {
5599         Jim_Obj *new_cmd;
5600         Jim_Cmd *cmd;
5601         const char *cp;
5602         int e;
5603         int x;
5604         struct target *target;
5605         struct command_context *cmd_ctx;
5606
5607         cmd_ctx = current_command_context(goi->interp);
5608         assert(cmd_ctx != NULL);
5609
5610         if (goi->argc < 3) {
5611                 Jim_WrongNumArgs(goi->interp, 1, goi->argv, "?name? ?type? ..options...");
5612                 return JIM_ERR;
5613         }
5614
5615         /* COMMAND */
5616         Jim_GetOpt_Obj(goi, &new_cmd);
5617         /* does this command exist? */
5618         cmd = Jim_GetCommand(goi->interp, new_cmd, JIM_ERRMSG);
5619         if (cmd) {
5620                 cp = Jim_GetString(new_cmd, NULL);
5621                 Jim_SetResultFormatted(goi->interp, "Command/target: %s Exists", cp);
5622                 return JIM_ERR;
5623         }
5624
5625         /* TYPE */
5626         e = Jim_GetOpt_String(goi, &cp, NULL);
5627         if (e != JIM_OK)
5628                 return e;
5629         struct transport *tr = get_current_transport();
5630         if (tr->override_target) {
5631                 e = tr->override_target(&cp);
5632                 if (e != ERROR_OK) {
5633                         LOG_ERROR("The selected transport doesn't support this target");
5634                         return JIM_ERR;
5635                 }
5636                 LOG_INFO("The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD");
5637         }
5638         /* now does target type exist */
5639         for (x = 0 ; target_types[x] ; x++) {
5640                 if (0 == strcmp(cp, target_types[x]->name)) {
5641                         /* found */
5642                         break;
5643                 }
5644
5645                 /* check for deprecated name */
5646                 if (target_types[x]->deprecated_name) {
5647                         if (0 == strcmp(cp, target_types[x]->deprecated_name)) {
5648                                 /* found */
5649                                 LOG_WARNING("target name is deprecated use: \'%s\'", target_types[x]->name);
5650                                 break;
5651                         }
5652                 }
5653         }
5654         if (target_types[x] == NULL) {
5655                 Jim_SetResultFormatted(goi->interp, "Unknown target type %s, try one of ", cp);
5656                 for (x = 0 ; target_types[x] ; x++) {
5657                         if (target_types[x + 1]) {
5658                                 Jim_AppendStrings(goi->interp,
5659                                                                    Jim_GetResult(goi->interp),
5660                                                                    target_types[x]->name,
5661                                                                    ", ", NULL);
5662                         } else {
5663                                 Jim_AppendStrings(goi->interp,
5664                                                                    Jim_GetResult(goi->interp),
5665                                                                    " or ",
5666                                                                    target_types[x]->name, NULL);
5667                         }
5668                 }
5669                 return JIM_ERR;
5670         }
5671
5672         /* Create it */
5673         target = calloc(1, sizeof(struct target));
5674         if (!target) {
5675                 LOG_ERROR("Out of memory");
5676                 return JIM_ERR;
5677         }
5678
5679         /* set target number */
5680         target->target_number = new_target_number();
5681
5682         /* allocate memory for each unique target type */
5683         target->type = malloc(sizeof(struct target_type));
5684         if (!target->type) {
5685                 LOG_ERROR("Out of memory");
5686                 free(target);
5687                 return JIM_ERR;
5688         }
5689
5690         memcpy(target->type, target_types[x], sizeof(struct target_type));
5691
5692         /* will be set by "-endian" */
5693         target->endianness = TARGET_ENDIAN_UNKNOWN;
5694
5695         /* default to first core, override with -coreid */
5696         target->coreid = 0;
5697
5698         target->working_area        = 0x0;
5699         target->working_area_size   = 0x0;
5700         target->working_areas       = NULL;
5701         target->backup_working_area = 0;
5702
5703         target->state               = TARGET_UNKNOWN;
5704         target->debug_reason        = DBG_REASON_UNDEFINED;
5705         target->reg_cache           = NULL;
5706         target->breakpoints         = NULL;
5707         target->watchpoints         = NULL;
5708         target->next                = NULL;
5709         target->arch_info           = NULL;
5710
5711         target->verbose_halt_msg        = true;
5712
5713         target->halt_issued                     = false;
5714
5715         /* initialize trace information */
5716         target->trace_info = calloc(1, sizeof(struct trace));
5717         if (!target->trace_info) {
5718                 LOG_ERROR("Out of memory");
5719                 free(target->type);
5720                 free(target);
5721                 return JIM_ERR;
5722         }
5723
5724         target->dbgmsg          = NULL;
5725         target->dbg_msg_enabled = 0;
5726
5727         target->endianness = TARGET_ENDIAN_UNKNOWN;
5728
5729         target->rtos = NULL;
5730         target->rtos_auto_detect = false;
5731
5732         target->gdb_port_override = NULL;
5733         target->gdb_max_connections = 1;
5734
5735         /* Do the rest as "configure" options */
5736         goi->isconfigure = 1;
5737         e = target_configure(goi, target);
5738
5739         if (e == JIM_OK) {
5740                 if (target->has_dap) {
5741                         if (!target->dap_configured) {
5742                                 Jim_SetResultString(goi->interp, "-dap ?name? required when creating target", -1);
5743                                 e = JIM_ERR;
5744                         }
5745                 } else {
5746                         if (!target->tap_configured) {
5747                                 Jim_SetResultString(goi->interp, "-chain-position ?name? required when creating target", -1);
5748                                 e = JIM_ERR;
5749                         }
5750                 }
5751                 /* tap must be set after target was configured */
5752                 if (target->tap == NULL)
5753                         e = JIM_ERR;
5754         }
5755
5756         if (e != JIM_OK) {
5757                 rtos_destroy(target);
5758                 free(target->gdb_port_override);
5759                 free(target->trace_info);
5760                 free(target->type);
5761                 free(target);
5762                 return e;
5763         }
5764
5765         if (target->endianness == TARGET_ENDIAN_UNKNOWN) {
5766                 /* default endian to little if not specified */
5767                 target->endianness = TARGET_LITTLE_ENDIAN;
5768         }
5769
5770         cp = Jim_GetString(new_cmd, NULL);
5771         target->cmd_name = strdup(cp);
5772         if (!target->cmd_name) {
5773                 LOG_ERROR("Out of memory");
5774                 rtos_destroy(target);
5775                 free(target->gdb_port_override);
5776                 free(target->trace_info);
5777                 free(target->type);
5778                 free(target);
5779                 return JIM_ERR;
5780         }
5781
5782         if (target->type->target_create) {
5783                 e = (*(target->type->target_create))(target, goi->interp);
5784                 if (e != ERROR_OK) {
5785                         LOG_DEBUG("target_create failed");
5786                         free(target->cmd_name);
5787                         rtos_destroy(target);
5788                         free(target->gdb_port_override);
5789                         free(target->trace_info);
5790                         free(target->type);
5791                         free(target);
5792                         return JIM_ERR;
5793                 }
5794         }
5795
5796         /* create the target specific commands */
5797         if (target->type->commands) {
5798                 e = register_commands(cmd_ctx, NULL, target->type->commands);
5799                 if (ERROR_OK != e)
5800                         LOG_ERROR("unable to register '%s' commands", cp);
5801         }
5802
5803         /* now - create the new target name command */
5804         const struct command_registration target_subcommands[] = {
5805                 {
5806                         .chain = target_instance_command_handlers,
5807                 },
5808                 {
5809                         .chain = target->type->commands,
5810                 },
5811                 COMMAND_REGISTRATION_DONE
5812         };
5813         const struct command_registration target_commands[] = {
5814                 {
5815                         .name = cp,
5816                         .mode = COMMAND_ANY,
5817                         .help = "target command group",
5818                         .usage = "",
5819                         .chain = target_subcommands,
5820                 },
5821                 COMMAND_REGISTRATION_DONE
5822         };
5823         e = register_commands(cmd_ctx, NULL, target_commands);
5824         if (e != ERROR_OK) {
5825                 if (target->type->deinit_target)
5826                         target->type->deinit_target(target);
5827                 free(target->cmd_name);
5828                 rtos_destroy(target);
5829                 free(target->gdb_port_override);
5830                 free(target->trace_info);
5831                 free(target->type);
5832                 free(target);
5833                 return JIM_ERR;
5834         }
5835
5836         struct command *c = command_find_in_context(cmd_ctx, cp);
5837         assert(c);
5838         command_set_handler_data(c, target);
5839
5840         /* append to end of list */
5841         append_to_list_all_targets(target);
5842
5843         cmd_ctx->current_target = target;
5844         return JIM_OK;
5845 }
5846
5847 static int jim_target_current(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5848 {
5849         if (argc != 1) {
5850                 Jim_WrongNumArgs(interp, 1, argv, "Too many parameters");
5851                 return JIM_ERR;
5852         }
5853         struct command_context *cmd_ctx = current_command_context(interp);
5854         assert(cmd_ctx != NULL);
5855
5856         struct target *target = get_current_target_or_null(cmd_ctx);
5857         if (target)
5858                 Jim_SetResultString(interp, target_name(target), -1);
5859         return JIM_OK;
5860 }
5861
5862 static int jim_target_types(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5863 {
5864         if (argc != 1) {
5865                 Jim_WrongNumArgs(interp, 1, argv, "Too many parameters");
5866                 return JIM_ERR;
5867         }
5868         Jim_SetResult(interp, Jim_NewListObj(interp, NULL, 0));
5869         for (unsigned x = 0; NULL != target_types[x]; x++) {
5870                 Jim_ListAppendElement(interp, Jim_GetResult(interp),
5871                         Jim_NewStringObj(interp, target_types[x]->name, -1));
5872         }
5873         return JIM_OK;
5874 }
5875
5876 static int jim_target_names(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5877 {
5878         if (argc != 1) {
5879                 Jim_WrongNumArgs(interp, 1, argv, "Too many parameters");
5880                 return JIM_ERR;
5881         }
5882         Jim_SetResult(interp, Jim_NewListObj(interp, NULL, 0));
5883         struct target *target = all_targets;
5884         while (target) {
5885                 Jim_ListAppendElement(interp, Jim_GetResult(interp),
5886                         Jim_NewStringObj(interp, target_name(target), -1));
5887                 target = target->next;
5888         }
5889         return JIM_OK;
5890 }
5891
5892 static int jim_target_smp(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5893 {
5894         int i;
5895         const char *targetname;
5896         int retval, len;
5897         struct target *target = (struct target *) NULL;
5898         struct target_list *head, *curr, *new;
5899         curr = (struct target_list *) NULL;
5900         head = (struct target_list *) NULL;
5901
5902         retval = 0;
5903         LOG_DEBUG("%d", argc);
5904         /* argv[1] = target to associate in smp
5905          * argv[2] = target to associate in smp
5906          * argv[3] ...
5907          */
5908
5909         for (i = 1; i < argc; i++) {
5910
5911                 targetname = Jim_GetString(argv[i], &len);
5912                 target = get_target(targetname);
5913                 LOG_DEBUG("%s ", targetname);
5914                 if (target) {
5915                         new = malloc(sizeof(struct target_list));
5916                         new->target = target;
5917                         new->next = (struct target_list *)NULL;
5918                         if (head == (struct target_list *)NULL) {
5919                                 head = new;
5920                                 curr = head;
5921                         } else {
5922                                 curr->next = new;
5923                                 curr = new;
5924                         }
5925                 }
5926         }
5927         /*  now parse the list of cpu and put the target in smp mode*/
5928         curr = head;
5929
5930         while (curr != (struct target_list *)NULL) {
5931                 target = curr->target;
5932                 target->smp = 1;
5933                 target->head = head;
5934                 curr = curr->next;
5935         }
5936
5937         if (target && target->rtos)
5938                 retval = rtos_smp_init(head->target);
5939
5940         return retval;
5941 }
5942
5943
5944 static int jim_target_create(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
5945 {
5946         Jim_GetOptInfo goi;
5947         Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
5948         if (goi.argc < 3) {
5949                 Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
5950                         "<name> <target_type> [<target_options> ...]");
5951                 return JIM_ERR;
5952         }
5953         return target_create(&goi);
5954 }
5955
5956 static const struct command_registration target_subcommand_handlers[] = {
5957         {
5958                 .name = "init",
5959                 .mode = COMMAND_CONFIG,
5960                 .handler = handle_target_init_command,
5961                 .help = "initialize targets",
5962                 .usage = "",
5963         },
5964         {
5965                 .name = "create",
5966                 .mode = COMMAND_CONFIG,
5967                 .jim_handler = jim_target_create,
5968                 .usage = "name type '-chain-position' name [options ...]",
5969                 .help = "Creates and selects a new target",
5970         },
5971         {
5972                 .name = "current",
5973                 .mode = COMMAND_ANY,
5974                 .jim_handler = jim_target_current,
5975                 .help = "Returns the currently selected target",
5976         },
5977         {
5978                 .name = "types",
5979                 .mode = COMMAND_ANY,
5980                 .jim_handler = jim_target_types,
5981                 .help = "Returns the available target types as "
5982                                 "a list of strings",
5983         },
5984         {
5985                 .name = "names",
5986                 .mode = COMMAND_ANY,
5987                 .jim_handler = jim_target_names,
5988                 .help = "Returns the names of all targets as a list of strings",
5989         },
5990         {
5991                 .name = "smp",
5992                 .mode = COMMAND_ANY,
5993                 .jim_handler = jim_target_smp,
5994                 .usage = "targetname1 targetname2 ...",
5995                 .help = "gather several target in a smp list"
5996         },
5997
5998         COMMAND_REGISTRATION_DONE
5999 };
6000
6001 struct FastLoad {
6002         target_addr_t address;
6003         uint8_t *data;
6004         int length;
6005
6006 };
6007
6008 static int fastload_num;
6009 static struct FastLoad *fastload;
6010
6011 static void free_fastload(void)
6012 {
6013         if (fastload != NULL) {
6014                 for (int i = 0; i < fastload_num; i++)
6015                         free(fastload[i].data);
6016                 free(fastload);
6017                 fastload = NULL;
6018         }
6019 }
6020
6021 COMMAND_HANDLER(handle_fast_load_image_command)
6022 {
6023         uint8_t *buffer;
6024         size_t buf_cnt;
6025         uint32_t image_size;
6026         target_addr_t min_address = 0;
6027         target_addr_t max_address = -1;
6028
6029         struct image image;
6030
6031         int retval = CALL_COMMAND_HANDLER(parse_load_image_command_CMD_ARGV,
6032                         &image, &min_address, &max_address);
6033         if (ERROR_OK != retval)
6034                 return retval;
6035
6036         struct duration bench;
6037         duration_start(&bench);
6038
6039         retval = image_open(&image, CMD_ARGV[0], (CMD_ARGC >= 3) ? CMD_ARGV[2] : NULL);
6040         if (retval != ERROR_OK)
6041                 return retval;
6042
6043         image_size = 0x0;
6044         retval = ERROR_OK;
6045         fastload_num = image.num_sections;
6046         fastload = malloc(sizeof(struct FastLoad)*image.num_sections);
6047         if (fastload == NULL) {
6048                 command_print(CMD, "out of memory");
6049                 image_close(&image);
6050                 return ERROR_FAIL;
6051         }
6052         memset(fastload, 0, sizeof(struct FastLoad)*image.num_sections);
6053         for (unsigned int i = 0; i < image.num_sections; i++) {
6054                 buffer = malloc(image.sections[i].size);
6055                 if (buffer == NULL) {
6056                         command_print(CMD, "error allocating buffer for section (%d bytes)",
6057                                                   (int)(image.sections[i].size));
6058                         retval = ERROR_FAIL;
6059                         break;
6060                 }
6061
6062                 retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt);
6063                 if (retval != ERROR_OK) {
6064                         free(buffer);
6065                         break;
6066                 }
6067
6068                 uint32_t offset = 0;
6069                 uint32_t length = buf_cnt;
6070
6071                 /* DANGER!!! beware of unsigned comparison here!!! */
6072
6073                 if ((image.sections[i].base_address + buf_cnt >= min_address) &&
6074                                 (image.sections[i].base_address < max_address)) {
6075                         if (image.sections[i].base_address < min_address) {
6076                                 /* clip addresses below */
6077                                 offset += min_address-image.sections[i].base_address;
6078                                 length -= offset;
6079                         }
6080
6081                         if (image.sections[i].base_address + buf_cnt > max_address)
6082                                 length -= (image.sections[i].base_address + buf_cnt)-max_address;
6083
6084                         fastload[i].address = image.sections[i].base_address + offset;
6085                         fastload[i].data = malloc(length);
6086                         if (fastload[i].data == NULL) {
6087                                 free(buffer);
6088                                 command_print(CMD, "error allocating buffer for section (%" PRIu32 " bytes)",
6089                                                           length);
6090                                 retval = ERROR_FAIL;
6091                                 break;
6092                         }
6093                         memcpy(fastload[i].data, buffer + offset, length);
6094                         fastload[i].length = length;
6095
6096                         image_size += length;
6097                         command_print(CMD, "%u bytes written at address 0x%8.8x",
6098                                                   (unsigned int)length,
6099                                                   ((unsigned int)(image.sections[i].base_address + offset)));
6100                 }
6101
6102                 free(buffer);
6103         }
6104
6105         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
6106                 command_print(CMD, "Loaded %" PRIu32 " bytes "
6107                                 "in %fs (%0.3f KiB/s)", image_size,
6108                                 duration_elapsed(&bench), duration_kbps(&bench, image_size));
6109
6110                 command_print(CMD,
6111                                 "WARNING: image has not been loaded to target!"
6112                                 "You can issue a 'fast_load' to finish loading.");
6113         }
6114
6115         image_close(&image);
6116
6117         if (retval != ERROR_OK)
6118                 free_fastload();
6119
6120         return retval;
6121 }
6122
6123 COMMAND_HANDLER(handle_fast_load_command)
6124 {
6125         if (CMD_ARGC > 0)
6126                 return ERROR_COMMAND_SYNTAX_ERROR;
6127         if (fastload == NULL) {
6128                 LOG_ERROR("No image in memory");
6129                 return ERROR_FAIL;
6130         }
6131         int i;
6132         int64_t ms = timeval_ms();
6133         int size = 0;
6134         int retval = ERROR_OK;
6135         for (i = 0; i < fastload_num; i++) {
6136                 struct target *target = get_current_target(CMD_CTX);
6137                 command_print(CMD, "Write to 0x%08x, length 0x%08x",
6138                                           (unsigned int)(fastload[i].address),
6139                                           (unsigned int)(fastload[i].length));
6140                 retval = target_write_buffer(target, fastload[i].address, fastload[i].length, fastload[i].data);
6141                 if (retval != ERROR_OK)
6142                         break;
6143                 size += fastload[i].length;
6144         }
6145         if (retval == ERROR_OK) {
6146                 int64_t after = timeval_ms();
6147                 command_print(CMD, "Loaded image %f kBytes/s", (float)(size/1024.0)/((float)(after-ms)/1000.0));
6148         }
6149         return retval;
6150 }
6151
6152 static const struct command_registration target_command_handlers[] = {
6153         {
6154                 .name = "targets",
6155                 .handler = handle_targets_command,
6156                 .mode = COMMAND_ANY,
6157                 .help = "change current default target (one parameter) "
6158                         "or prints table of all targets (no parameters)",
6159                 .usage = "[target]",
6160         },
6161         {
6162                 .name = "target",
6163                 .mode = COMMAND_CONFIG,
6164                 .help = "configure target",
6165                 .chain = target_subcommand_handlers,
6166                 .usage = "",
6167         },
6168         COMMAND_REGISTRATION_DONE
6169 };
6170
6171 int target_register_commands(struct command_context *cmd_ctx)
6172 {
6173         return register_commands(cmd_ctx, NULL, target_command_handlers);
6174 }
6175
6176 static bool target_reset_nag = true;
6177
6178 bool get_target_reset_nag(void)
6179 {
6180         return target_reset_nag;
6181 }
6182
6183 COMMAND_HANDLER(handle_target_reset_nag)
6184 {
6185         return CALL_COMMAND_HANDLER(handle_command_parse_bool,
6186                         &target_reset_nag, "Nag after each reset about options to improve "
6187                         "performance");
6188 }
6189
6190 COMMAND_HANDLER(handle_ps_command)
6191 {
6192         struct target *target = get_current_target(CMD_CTX);
6193         char *display;
6194         if (target->state != TARGET_HALTED) {
6195                 LOG_INFO("target not halted !!");
6196                 return ERROR_OK;
6197         }
6198
6199         if ((target->rtos) && (target->rtos->type)
6200                         && (target->rtos->type->ps_command)) {
6201                 display = target->rtos->type->ps_command(target);
6202                 command_print(CMD, "%s", display);
6203                 free(display);
6204                 return ERROR_OK;
6205         } else {
6206                 LOG_INFO("failed");
6207                 return ERROR_TARGET_FAILURE;
6208         }
6209 }
6210
6211 static void binprint(struct command_invocation *cmd, const char *text, const uint8_t *buf, int size)
6212 {
6213         if (text != NULL)
6214                 command_print_sameline(cmd, "%s", text);
6215         for (int i = 0; i < size; i++)
6216                 command_print_sameline(cmd, " %02x", buf[i]);
6217         command_print(cmd, " ");
6218 }
6219
6220 COMMAND_HANDLER(handle_test_mem_access_command)
6221 {
6222         struct target *target = get_current_target(CMD_CTX);
6223         uint32_t test_size;
6224         int retval = ERROR_OK;
6225
6226         if (target->state != TARGET_HALTED) {
6227                 LOG_INFO("target not halted !!");
6228                 return ERROR_FAIL;
6229         }
6230
6231         if (CMD_ARGC != 1)
6232                 return ERROR_COMMAND_SYNTAX_ERROR;
6233
6234         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], test_size);
6235
6236         /* Test reads */
6237         size_t num_bytes = test_size + 4;
6238
6239         struct working_area *wa = NULL;
6240         retval = target_alloc_working_area(target, num_bytes, &wa);
6241         if (retval != ERROR_OK) {
6242                 LOG_ERROR("Not enough working area");
6243                 return ERROR_FAIL;
6244         }
6245
6246         uint8_t *test_pattern = malloc(num_bytes);
6247
6248         for (size_t i = 0; i < num_bytes; i++)
6249                 test_pattern[i] = rand();
6250
6251         retval = target_write_memory(target, wa->address, 1, num_bytes, test_pattern);
6252         if (retval != ERROR_OK) {
6253                 LOG_ERROR("Test pattern write failed");
6254                 goto out;
6255         }
6256
6257         for (int host_offset = 0; host_offset <= 1; host_offset++) {
6258                 for (int size = 1; size <= 4; size *= 2) {
6259                         for (int offset = 0; offset < 4; offset++) {
6260                                 uint32_t count = test_size / size;
6261                                 size_t host_bufsiz = (count + 2) * size + host_offset;
6262                                 uint8_t *read_ref = malloc(host_bufsiz);
6263                                 uint8_t *read_buf = malloc(host_bufsiz);
6264
6265                                 for (size_t i = 0; i < host_bufsiz; i++) {
6266                                         read_ref[i] = rand();
6267                                         read_buf[i] = read_ref[i];
6268                                 }
6269                                 command_print_sameline(CMD,
6270                                                 "Test read %" PRIu32 " x %d @ %d to %saligned buffer: ", count,
6271                                                 size, offset, host_offset ? "un" : "");
6272
6273                                 struct duration bench;
6274                                 duration_start(&bench);
6275
6276                                 retval = target_read_memory(target, wa->address + offset, size, count,
6277                                                 read_buf + size + host_offset);
6278
6279                                 duration_measure(&bench);
6280
6281                                 if (retval == ERROR_TARGET_UNALIGNED_ACCESS) {
6282                                         command_print(CMD, "Unsupported alignment");
6283                                         goto next;
6284                                 } else if (retval != ERROR_OK) {
6285                                         command_print(CMD, "Memory read failed");
6286                                         goto next;
6287                                 }
6288
6289                                 /* replay on host */
6290                                 memcpy(read_ref + size + host_offset, test_pattern + offset, count * size);
6291
6292                                 /* check result */
6293                                 int result = memcmp(read_ref, read_buf, host_bufsiz);
6294                                 if (result == 0) {
6295                                         command_print(CMD, "Pass in %fs (%0.3f KiB/s)",
6296                                                         duration_elapsed(&bench),
6297                                                         duration_kbps(&bench, count * size));
6298                                 } else {
6299                                         command_print(CMD, "Compare failed");
6300                                         binprint(CMD, "ref:", read_ref, host_bufsiz);
6301                                         binprint(CMD, "buf:", read_buf, host_bufsiz);
6302                                 }
6303 next:
6304                                 free(read_ref);
6305                                 free(read_buf);
6306                         }
6307                 }
6308         }
6309
6310 out:
6311         free(test_pattern);
6312
6313         if (wa != NULL)
6314                 target_free_working_area(target, wa);
6315
6316         /* Test writes */
6317         num_bytes = test_size + 4 + 4 + 4;
6318
6319         retval = target_alloc_working_area(target, num_bytes, &wa);
6320         if (retval != ERROR_OK) {
6321                 LOG_ERROR("Not enough working area");
6322                 return ERROR_FAIL;
6323         }
6324
6325         test_pattern = malloc(num_bytes);
6326
6327         for (size_t i = 0; i < num_bytes; i++)
6328                 test_pattern[i] = rand();
6329
6330         for (int host_offset = 0; host_offset <= 1; host_offset++) {
6331                 for (int size = 1; size <= 4; size *= 2) {
6332                         for (int offset = 0; offset < 4; offset++) {
6333                                 uint32_t count = test_size / size;
6334                                 size_t host_bufsiz = count * size + host_offset;
6335                                 uint8_t *read_ref = malloc(num_bytes);
6336                                 uint8_t *read_buf = malloc(num_bytes);
6337                                 uint8_t *write_buf = malloc(host_bufsiz);
6338
6339                                 for (size_t i = 0; i < host_bufsiz; i++)
6340                                         write_buf[i] = rand();
6341                                 command_print_sameline(CMD,
6342                                                 "Test write %" PRIu32 " x %d @ %d from %saligned buffer: ", count,
6343                                                 size, offset, host_offset ? "un" : "");
6344
6345                                 retval = target_write_memory(target, wa->address, 1, num_bytes, test_pattern);
6346                                 if (retval != ERROR_OK) {
6347                                         command_print(CMD, "Test pattern write failed");
6348                                         goto nextw;
6349                                 }
6350
6351                                 /* replay on host */
6352                                 memcpy(read_ref, test_pattern, num_bytes);
6353                                 memcpy(read_ref + size + offset, write_buf + host_offset, count * size);
6354
6355                                 struct duration bench;
6356                                 duration_start(&bench);
6357
6358                                 retval = target_write_memory(target, wa->address + size + offset, size, count,
6359                                                 write_buf + host_offset);
6360
6361                                 duration_measure(&bench);
6362
6363                                 if (retval == ERROR_TARGET_UNALIGNED_ACCESS) {
6364                                         command_print(CMD, "Unsupported alignment");
6365                                         goto nextw;
6366                                 } else if (retval != ERROR_OK) {
6367                                         command_print(CMD, "Memory write failed");
6368                                         goto nextw;
6369                                 }
6370
6371                                 /* read back */
6372                                 retval = target_read_memory(target, wa->address, 1, num_bytes, read_buf);
6373                                 if (retval != ERROR_OK) {
6374                                         command_print(CMD, "Test pattern write failed");
6375                                         goto nextw;
6376                                 }
6377
6378                                 /* check result */
6379                                 int result = memcmp(read_ref, read_buf, num_bytes);
6380                                 if (result == 0) {
6381                                         command_print(CMD, "Pass in %fs (%0.3f KiB/s)",
6382                                                         duration_elapsed(&bench),
6383                                                         duration_kbps(&bench, count * size));
6384                                 } else {
6385                                         command_print(CMD, "Compare failed");
6386                                         binprint(CMD, "ref:", read_ref, num_bytes);
6387                                         binprint(CMD, "buf:", read_buf, num_bytes);
6388                                 }
6389 nextw:
6390                                 free(read_ref);
6391                                 free(read_buf);
6392                         }
6393                 }
6394         }
6395
6396         free(test_pattern);
6397
6398         if (wa != NULL)
6399                 target_free_working_area(target, wa);
6400         return retval;
6401 }
6402
6403 static const struct command_registration target_exec_command_handlers[] = {
6404         {
6405                 .name = "fast_load_image",
6406                 .handler = handle_fast_load_image_command,
6407                 .mode = COMMAND_ANY,
6408                 .help = "Load image into server memory for later use by "
6409                         "fast_load; primarily for profiling",
6410                 .usage = "filename address ['bin'|'ihex'|'elf'|'s19'] "
6411                         "[min_address [max_length]]",
6412         },
6413         {
6414                 .name = "fast_load",
6415                 .handler = handle_fast_load_command,
6416                 .mode = COMMAND_EXEC,
6417                 .help = "loads active fast load image to current target "
6418                         "- mainly for profiling purposes",
6419                 .usage = "",
6420         },
6421         {
6422                 .name = "profile",
6423                 .handler = handle_profile_command,
6424                 .mode = COMMAND_EXEC,
6425                 .usage = "seconds filename [start end]",
6426                 .help = "profiling samples the CPU PC",
6427         },
6428         /** @todo don't register virt2phys() unless target supports it */
6429         {
6430                 .name = "virt2phys",
6431                 .handler = handle_virt2phys_command,
6432                 .mode = COMMAND_ANY,
6433                 .help = "translate a virtual address into a physical address",
6434                 .usage = "virtual_address",
6435         },
6436         {
6437                 .name = "reg",
6438                 .handler = handle_reg_command,
6439                 .mode = COMMAND_EXEC,
6440                 .help = "display (reread from target with \"force\") or set a register; "
6441                         "with no arguments, displays all registers and their values",
6442                 .usage = "[(register_number|register_name) [(value|'force')]]",
6443         },
6444         {
6445                 .name = "poll",
6446                 .handler = handle_poll_command,
6447                 .mode = COMMAND_EXEC,
6448                 .help = "poll target state; or reconfigure background polling",
6449                 .usage = "['on'|'off']",
6450         },
6451         {
6452                 .name = "wait_halt",
6453                 .handler = handle_wait_halt_command,
6454                 .mode = COMMAND_EXEC,
6455                 .help = "wait up to the specified number of milliseconds "
6456                         "(default 5000) for a previously requested halt",
6457                 .usage = "[milliseconds]",
6458         },
6459         {
6460                 .name = "halt",
6461                 .handler = handle_halt_command,
6462                 .mode = COMMAND_EXEC,
6463                 .help = "request target to halt, then wait up to the specified "
6464                         "number of milliseconds (default 5000) for it to complete",
6465                 .usage = "[milliseconds]",
6466         },
6467         {
6468                 .name = "resume",
6469                 .handler = handle_resume_command,
6470                 .mode = COMMAND_EXEC,
6471                 .help = "resume target execution from current PC or address",
6472                 .usage = "[address]",
6473         },
6474         {
6475                 .name = "reset",
6476                 .handler = handle_reset_command,
6477                 .mode = COMMAND_EXEC,
6478                 .usage = "[run|halt|init]",
6479                 .help = "Reset all targets into the specified mode. "
6480                         "Default reset mode is run, if not given.",
6481         },
6482         {
6483                 .name = "soft_reset_halt",
6484                 .handler = handle_soft_reset_halt_command,
6485                 .mode = COMMAND_EXEC,
6486                 .usage = "",
6487                 .help = "halt the target and do a soft reset",
6488         },
6489         {
6490                 .name = "step",
6491                 .handler = handle_step_command,
6492                 .mode = COMMAND_EXEC,
6493                 .help = "step one instruction from current PC or address",
6494                 .usage = "[address]",
6495         },
6496         {
6497                 .name = "mdd",
6498                 .handler = handle_md_command,
6499                 .mode = COMMAND_EXEC,
6500                 .help = "display memory double-words",
6501                 .usage = "['phys'] address [count]",
6502         },
6503         {
6504                 .name = "mdw",
6505                 .handler = handle_md_command,
6506                 .mode = COMMAND_EXEC,
6507                 .help = "display memory words",
6508                 .usage = "['phys'] address [count]",
6509         },
6510         {
6511                 .name = "mdh",
6512                 .handler = handle_md_command,
6513                 .mode = COMMAND_EXEC,
6514                 .help = "display memory half-words",
6515                 .usage = "['phys'] address [count]",
6516         },
6517         {
6518                 .name = "mdb",
6519                 .handler = handle_md_command,
6520                 .mode = COMMAND_EXEC,
6521                 .help = "display memory bytes",
6522                 .usage = "['phys'] address [count]",
6523         },
6524         {
6525                 .name = "mwd",
6526                 .handler = handle_mw_command,
6527                 .mode = COMMAND_EXEC,
6528                 .help = "write memory double-word",
6529                 .usage = "['phys'] address value [count]",
6530         },
6531         {
6532                 .name = "mww",
6533                 .handler = handle_mw_command,
6534                 .mode = COMMAND_EXEC,
6535                 .help = "write memory word",
6536                 .usage = "['phys'] address value [count]",
6537         },
6538         {
6539                 .name = "mwh",
6540                 .handler = handle_mw_command,
6541                 .mode = COMMAND_EXEC,
6542                 .help = "write memory half-word",
6543                 .usage = "['phys'] address value [count]",
6544         },
6545         {
6546                 .name = "mwb",
6547                 .handler = handle_mw_command,
6548                 .mode = COMMAND_EXEC,
6549                 .help = "write memory byte",
6550                 .usage = "['phys'] address value [count]",
6551         },
6552         {
6553                 .name = "bp",
6554                 .handler = handle_bp_command,
6555                 .mode = COMMAND_EXEC,
6556                 .help = "list or set hardware or software breakpoint",
6557                 .usage = "[<address> [<asid>] <length> ['hw'|'hw_ctx']]",
6558         },
6559         {
6560                 .name = "rbp",
6561                 .handler = handle_rbp_command,
6562                 .mode = COMMAND_EXEC,
6563                 .help = "remove breakpoint",
6564                 .usage = "'all' | address",
6565         },
6566         {
6567                 .name = "wp",
6568                 .handler = handle_wp_command,
6569                 .mode = COMMAND_EXEC,
6570                 .help = "list (no params) or create watchpoints",
6571                 .usage = "[address length [('r'|'w'|'a') value [mask]]]",
6572         },
6573         {
6574                 .name = "rwp",
6575                 .handler = handle_rwp_command,
6576                 .mode = COMMAND_EXEC,
6577                 .help = "remove watchpoint",
6578                 .usage = "address",
6579         },
6580         {
6581                 .name = "load_image",
6582                 .handler = handle_load_image_command,
6583                 .mode = COMMAND_EXEC,
6584                 .usage = "filename address ['bin'|'ihex'|'elf'|'s19'] "
6585                         "[min_address] [max_length]",
6586         },
6587         {
6588                 .name = "dump_image",
6589                 .handler = handle_dump_image_command,
6590                 .mode = COMMAND_EXEC,
6591                 .usage = "filename address size",
6592         },
6593         {
6594                 .name = "verify_image_checksum",
6595                 .handler = handle_verify_image_checksum_command,
6596                 .mode = COMMAND_EXEC,
6597                 .usage = "filename [offset [type]]",
6598         },
6599         {
6600                 .name = "verify_image",
6601                 .handler = handle_verify_image_command,
6602                 .mode = COMMAND_EXEC,
6603                 .usage = "filename [offset [type]]",
6604         },
6605         {
6606                 .name = "test_image",
6607                 .handler = handle_test_image_command,
6608                 .mode = COMMAND_EXEC,
6609                 .usage = "filename [offset [type]]",
6610         },
6611         {
6612                 .name = "mem2array",
6613                 .mode = COMMAND_EXEC,
6614                 .jim_handler = jim_mem2array,
6615                 .help = "read 8/16/32 bit memory and return as a TCL array "
6616                         "for script processing",
6617                 .usage = "arrayname bitwidth address count",
6618         },
6619         {
6620                 .name = "array2mem",
6621                 .mode = COMMAND_EXEC,
6622                 .jim_handler = jim_array2mem,
6623                 .help = "convert a TCL array to memory locations "
6624                         "and write the 8/16/32 bit values",
6625                 .usage = "arrayname bitwidth address count",
6626         },
6627         {
6628                 .name = "reset_nag",
6629                 .handler = handle_target_reset_nag,
6630                 .mode = COMMAND_ANY,
6631                 .help = "Nag after each reset about options that could have been "
6632                                 "enabled to improve performance. ",
6633                 .usage = "['enable'|'disable']",
6634         },
6635         {
6636                 .name = "ps",
6637                 .handler = handle_ps_command,
6638                 .mode = COMMAND_EXEC,
6639                 .help = "list all tasks ",
6640                 .usage = " ",
6641         },
6642         {
6643                 .name = "test_mem_access",
6644                 .handler = handle_test_mem_access_command,
6645                 .mode = COMMAND_EXEC,
6646                 .help = "Test the target's memory access functions",
6647                 .usage = "size",
6648         },
6649
6650         COMMAND_REGISTRATION_DONE
6651 };
6652 static int target_register_user_commands(struct command_context *cmd_ctx)
6653 {
6654         int retval = ERROR_OK;
6655         retval = target_request_register_commands(cmd_ctx);
6656         if (retval != ERROR_OK)
6657                 return retval;
6658
6659         retval = trace_register_commands(cmd_ctx);
6660         if (retval != ERROR_OK)
6661                 return retval;
6662
6663
6664         return register_commands(cmd_ctx, NULL, target_exec_command_handlers);
6665 }