src/target/esirisc_trace.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2018 by Square, Inc.                                    *
   5  *   Steven Stallion <stallion@squareup.com>                               *
   6  ***************************************************************************/
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include "config.h"
  10 #endif
  11
  12 #include <helper/binarybuffer.h>
  13 #include <helper/command.h>
  14 #include <helper/fileio.h>
  15 #include <helper/log.h>
  16 #include <helper/types.h>
  17 #include <target/target.h>
  18
  19 #include "esirisc.h"
  20
  21 #define BIT_MASK(x)                     ((1 << (x)) - 1)
  22
  23 /* Control Fields */
  24 #define CONTROL_ST                      (1<<0)                                  /* Start */
  25 #define CONTROL_SP                      (1<<1)                                  /* Stop */
  26 #define CONTROL_W                       (1<<2)                                  /* Wrap */
  27 #define CONTROL_FC                      (1<<3)                                  /* Flow Control */
  28 #define CONTROL_FMT(x)          (((x) <<  4) & 0x30)    /* Format */
  29 #define CONTROL_PCB(x)          (((x) << 10) & 0x7c00)  /* PC Bits */
  30
  31 /* Status Fields */
  32 #define STATUS_T                        (1<<0)  /* Trace Started */
  33 #define STATUS_TD                       (1<<1)  /* Trace Disabled */
  34 #define STATUS_W                        (1<<2)  /* Wrapped */
  35 #define STATUS_O                        (1<<3)  /* Overflow */
  36
  37 /* Trigger Fields */
  38 #define TRIGGER_TST(x)          (((x) << 0) & 0xf)              /* Trigger Start */
  39 #define TRIGGER_DST                     (1<<7)                                  /* Delay Start */
  40 #define TRIGGER_TSP(x)          (((x) << 8) & 0xf00)    /* Trigger Stop */
  41 #define TRIGGER_DSP                     (1<<15)                                 /* Delay Start */
  42
  43 static const char * const esirisc_trace_delay_strings[] = {
  44         "none", "start", "stop", "both",
  45 };
  46
  47 static const char * const esirisc_trace_format_strings[] = {
  48         "full", "branch", "icache",
  49 };
  50
  51 static const char * const esirisc_trace_id_strings[] = {
  52         "sequential instruction",
  53         "pipeline stall",
  54         "direct branch",
  55         "extended ID",
  56 };
  57
  58 static const char * const esirisc_trace_ext_id_strings[] = {
  59         "",     /* unused */
  60         "exception",
  61         "eret",
  62         "stop instruction",
  63         "wait instruction",
  64         "multicycle instruction",
  65         "count",
  66         "initial",
  67         "indirect branch",
  68         "end of trace",
  69         "final",
  70 };
  71
  72 static const char * const esirisc_trace_trigger_strings[] = {
  73         "none", "pc", "load", "store", "exception", "eret", "wait", "stop",
  74         "high", "low",  /* start only */
  75 };
  76
  77 static int esirisc_trace_clear_status(struct target *target)
  78 {
  79         struct esirisc_common *esirisc = target_to_esirisc(target);
  80         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
  81         int retval;
  82
  83         if (target->state != TARGET_HALTED)
  84                 return ERROR_TARGET_NOT_HALTED;
  85
  86         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_STATUS, ~0);
  87         if (retval != ERROR_OK) {
  88                 LOG_ERROR("%s: failed to write Trace CSR: Status", target_name(target));
  89                 return retval;
  90         }
  91
  92         return ERROR_OK;
  93 }
  94
  95 static int esirisc_trace_get_status(struct target *target, uint32_t *status)
  96 {
  97         struct esirisc_common *esirisc = target_to_esirisc(target);
  98         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
  99
 100         if (target->state != TARGET_HALTED)
 101                 return ERROR_TARGET_NOT_HALTED;
 102
 103         int retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_STATUS, status);
 104         if (retval != ERROR_OK) {
 105                 LOG_ERROR("%s: failed to read Trace CSR: Status", target_name(target));
 106                 return retval;
 107         }
 108
 109         return ERROR_OK;
 110 }
 111
 112 static int esirisc_trace_start(struct target *target)
 113 {
 114         struct esirisc_common *esirisc = target_to_esirisc(target);
 115         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 116         uint32_t control;
 117         int retval;
 118
 119         if (target->state != TARGET_HALTED)
 120                 return ERROR_TARGET_NOT_HALTED;
 121
 122         retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, &control);
 123         if (retval != ERROR_OK) {
 124                 LOG_ERROR("%s: failed to read Trace CSR: Control", target_name(target));
 125                 return retval;
 126         }
 127
 128         control |= CONTROL_ST;
 129
 130         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, control);
 131         if (retval != ERROR_OK) {
 132                 LOG_ERROR("%s: failed to write Trace CSR: Control", target_name(target));
 133                 return retval;
 134         }
 135
 136         return ERROR_OK;
 137 }
 138
 139 static int esirisc_trace_stop(struct target *target)
 140 {
 141         struct esirisc_common *esirisc = target_to_esirisc(target);
 142         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 143         uint32_t control;
 144         int retval;
 145
 146         if (target->state != TARGET_HALTED)
 147                 return ERROR_TARGET_NOT_HALTED;
 148
 149         retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, &control);
 150         if (retval != ERROR_OK) {
 151                 LOG_ERROR("%s: failed to read Trace CSR: Control", target_name(target));
 152                 return retval;
 153         }
 154
 155         control |= CONTROL_SP;
 156
 157         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, control);
 158         if (retval != ERROR_OK) {
 159                 LOG_ERROR("%s: failed to write Trace CSR: Control", target_name(target));
 160                 return retval;
 161         }
 162
 163         return ERROR_OK;
 164 }
 165
 166 static int esirisc_trace_init(struct target *target)
 167 {
 168         struct esirisc_common *esirisc = target_to_esirisc(target);
 169         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 170         struct esirisc_trace *trace_info = &esirisc->trace_info;
 171         uint32_t control, trigger;
 172         int retval;
 173
 174         if (target->state != TARGET_HALTED)
 175                 return ERROR_TARGET_NOT_HALTED;
 176
 177         /* stop if running and clear status */
 178         retval = esirisc_trace_stop(target);
 179         if (retval != ERROR_OK)
 180                 return retval;
 181
 182         retval = esirisc_trace_clear_status(target);
 183         if (retval != ERROR_OK)
 184                 return retval;
 185
 186         /* initialize Control CSR */
 187         control = CONTROL_FMT(trace_info->format)
 188                         | CONTROL_PCB(trace_info->pc_bits);
 189
 190         if (trace_info->buffer_wrap)
 191                 control |= CONTROL_W;
 192
 193         if (trace_info->flow_control)
 194                 control |= CONTROL_FC;
 195
 196         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, control);
 197         if (retval != ERROR_OK) {
 198                 LOG_ERROR("%s: failed to write Trace CSR: Control", target_name(target));
 199                 return retval;
 200         }
 201
 202         /* initialize buffer CSRs */
 203         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_START,
 204                         trace_info->buffer_start);
 205         if (retval != ERROR_OK) {
 206                 LOG_ERROR("%s: failed to write Trace CSR: BufferStart", target_name(target));
 207                 return retval;
 208         }
 209
 210         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_END,
 211                         trace_info->buffer_end);
 212         if (retval != ERROR_OK) {
 213                 LOG_ERROR("%s: failed to write Trace CSR: BufferEnd", target_name(target));
 214                 return retval;
 215         }
 216
 217         /*
 218          * The BufferCurrent CSR must be initialized to the same value as
 219          * BufferStart before tracing can be enabled:
 220          */
 221         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_CUR,
 222                         trace_info->buffer_start);
 223         if (retval != ERROR_OK) {
 224                 LOG_ERROR("%s: failed to write Trace CSR: BufferCurrent", target_name(target));
 225                 return retval;
 226         }
 227
 228         /* initialize Trigger CSR */
 229         trigger = TRIGGER_TST(trace_info->start_trigger)
 230                         | TRIGGER_TSP(trace_info->stop_trigger);
 231
 232         if (trace_info->delay == ESIRISC_TRACE_DELAY_START
 233                 || trace_info->delay == ESIRISC_TRACE_DELAY_BOTH) {
 234                 trigger |= TRIGGER_DST;
 235         }
 236
 237         if (trace_info->delay == ESIRISC_TRACE_DELAY_STOP
 238                 || trace_info->delay == ESIRISC_TRACE_DELAY_BOTH) {
 239                 trigger |= TRIGGER_DSP;
 240         }
 241
 242         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_TRIGGER, trigger);
 243         if (retval != ERROR_OK) {
 244                 LOG_ERROR("%s: failed to write Trace CSR: Trigger", target_name(target));
 245                 return retval;
 246         }
 247
 248         /* initialize StartData/StartMask CSRs */
 249         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_START_DATA,
 250                         trace_info->start_data);
 251         if (retval != ERROR_OK) {
 252                 LOG_ERROR("%s: failed to write Trace CSR: StartData", target_name(target));
 253                 return retval;
 254         }
 255
 256         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_START_MASK,
 257                         trace_info->start_mask);
 258         if (retval != ERROR_OK) {
 259                 LOG_ERROR("%s: failed to write Trace CSR: StartMask", target_name(target));
 260                 return retval;
 261         }
 262
 263         /* initialize StopData/StopMask CSRs */
 264         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_STOP_DATA,
 265                         trace_info->stop_data);
 266         if (retval != ERROR_OK) {
 267                 LOG_ERROR("%s: failed to write Trace CSR: StopData", target_name(target));
 268                 return retval;
 269         }
 270
 271         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_STOP_MASK,
 272                         trace_info->stop_mask);
 273         if (retval != ERROR_OK) {
 274                 LOG_ERROR("%s: failed to write Trace CSR: StopMask", target_name(target));
 275                 return retval;
 276         }
 277
 278         /* initialize Delay CSR */
 279         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_DELAY,
 280                         trace_info->delay_cycles);
 281         if (retval != ERROR_OK) {
 282                 LOG_ERROR("%s: failed to write Trace CSR: Delay", target_name(target));
 283                 return retval;
 284         }
 285
 286         return ERROR_OK;
 287 }
 288
 289 static int esirisc_trace_buf_get_u32(uint8_t *buffer, uint32_t size,
 290                 unsigned *pos, unsigned count, uint32_t *value)
 291 {
 292         const unsigned num_bits = size * 8;
 293
 294         if (*pos+count > num_bits)
 295                 return ERROR_FAIL;
 296
 297         *value = buf_get_u32(buffer, *pos, count);
 298         *pos += count;
 299
 300         return ERROR_OK;
 301 }
 302
 303 static int esirisc_trace_buf_get_pc(struct target *target, uint8_t *buffer, uint32_t size,
 304                 unsigned *pos, uint32_t *value)
 305 {
 306         struct esirisc_common *esirisc = target_to_esirisc(target);
 307         struct esirisc_trace *trace_info = &esirisc->trace_info;
 308         int retval;
 309
 310         retval = esirisc_trace_buf_get_u32(buffer, size, pos, trace_info->pc_bits, value);
 311         if (retval != ERROR_OK)
 312                 return retval;
 313
 314         *value <<= esirisc->num_bits - trace_info->pc_bits;
 315
 316         return ERROR_OK;
 317 }
 318
 319 static int esirisc_trace_read_memory(struct target *target, target_addr_t address, uint32_t size,
 320                 uint8_t *buffer)
 321 {
 322         int retval;
 323
 324         if (target->state != TARGET_HALTED)
 325                 return ERROR_TARGET_NOT_HALTED;
 326
 327         retval = target_read_memory(target, address, 1, size, buffer);
 328         if (retval != ERROR_OK) {
 329                 LOG_ERROR("%s: failed to read trace data", target_name(target));
 330                 return retval;
 331         }
 332
 333         return ERROR_OK;
 334 }
 335
 336 static int esirisc_trace_read_buffer(struct target *target, uint8_t *buffer)
 337 {
 338         struct esirisc_common *esirisc = target_to_esirisc(target);
 339         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 340         struct esirisc_trace *trace_info = &esirisc->trace_info;
 341         uint32_t buffer_cur, status;
 342         int retval;
 343
 344         if (target->state != TARGET_HALTED)
 345                 return ERROR_TARGET_NOT_HALTED;
 346
 347         retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_CUR, &buffer_cur);
 348         if (retval != ERROR_OK) {
 349                 LOG_ERROR("%s: failed to read Trace CSR: BufferCurrent", target_name(target));
 350                 return retval;
 351         }
 352
 353         /*
 354          * If the buffer has wrapped, the BufferCurrent CSR indicates the
 355          * next address to be written (ie. the start address). These bytes
 356          * must be dumped first to maintain coherency when analyzing
 357          * captured data.
 358          */
 359         retval = esirisc_trace_get_status(target, &status);
 360         if (retval != ERROR_OK)
 361                 return retval;
 362
 363         if (status & STATUS_W) {
 364                 uint32_t size = trace_info->buffer_end - buffer_cur;
 365
 366                 retval = esirisc_trace_read_memory(target, buffer_cur, size, buffer);
 367                 if (retval != ERROR_OK)
 368                         return retval;
 369
 370                 buffer += size;
 371         }
 372
 373         return esirisc_trace_read_memory(target, trace_info->buffer_start,
 374                         buffer_cur - trace_info->buffer_start, buffer);
 375 }
 376
 377 static int esirisc_trace_analyze_full(struct command_invocation *cmd, uint8_t *buffer, uint32_t size)
 378 {
 379         struct target *target = get_current_target(cmd->ctx);
 380         const uint32_t num_bits = size * 8;
 381         int retval;
 382
 383         unsigned pos = 0;
 384         while (pos < num_bits) {
 385                 uint32_t id;
 386
 387                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 2, &id);
 388                 if (retval != ERROR_OK)
 389                         goto fail;
 390
 391                 switch (id) {
 392                         case ESIRISC_TRACE_ID_EXECUTE:
 393                         case ESIRISC_TRACE_ID_STALL:
 394                         case ESIRISC_TRACE_ID_BRANCH:
 395                                 command_print(cmd, "%s", esirisc_trace_id_strings[id]);
 396                                 break;
 397
 398                         case ESIRISC_TRACE_ID_EXTENDED: {
 399                                 uint32_t ext_id;
 400
 401                                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 4, &ext_id);
 402                                 if (retval != ERROR_OK)
 403                                         goto fail;
 404
 405                                 switch (ext_id) {
 406                                         case ESIRISC_TRACE_EXT_ID_STOP:
 407                                         case ESIRISC_TRACE_EXT_ID_WAIT:
 408                                         case ESIRISC_TRACE_EXT_ID_MULTICYCLE:
 409                                                 command_print(cmd, "%s", esirisc_trace_ext_id_strings[ext_id]);
 410                                                 break;
 411
 412                                         case ESIRISC_TRACE_EXT_ID_ERET:
 413                                         case ESIRISC_TRACE_EXT_ID_PC:
 414                                         case ESIRISC_TRACE_EXT_ID_INDIRECT:
 415                                         case ESIRISC_TRACE_EXT_ID_END_PC: {
 416                                                 uint32_t pc;
 417
 418                                                 retval = esirisc_trace_buf_get_pc(target, buffer, size, &pos, &pc);
 419                                                 if (retval != ERROR_OK)
 420                                                         goto fail;
 421
 422                                                 command_print(cmd, "%s PC: 0x%" PRIx32,
 423                                                                 esirisc_trace_ext_id_strings[ext_id], pc);
 424
 425                                                 if (ext_id == ESIRISC_TRACE_EXT_ID_END_PC) {
 426                                                         command_print(cmd, "--- end of trace ---");
 427                                                         return ERROR_OK;
 428                                                 }
 429                                                 break;
 430                                         }
 431                                         case ESIRISC_TRACE_EXT_ID_EXCEPTION: {
 432                                                 uint32_t eid, epc;
 433
 434                                                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 6, &eid);
 435                                                 if (retval != ERROR_OK)
 436                                                         goto fail;
 437
 438                                                 retval = esirisc_trace_buf_get_pc(target, buffer, size, &pos, &epc);
 439                                                 if (retval != ERROR_OK)
 440                                                         goto fail;
 441
 442                                                 command_print(cmd, "%s EID: 0x%" PRIx32 ", EPC: 0x%" PRIx32,
 443                                                                 esirisc_trace_ext_id_strings[ext_id], eid, epc);
 444                                                 break;
 445                                         }
 446                                         case ESIRISC_TRACE_EXT_ID_COUNT: {
 447                                                 uint32_t count;
 448
 449                                                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 6, &count);
 450                                                 if (retval != ERROR_OK)
 451                                                         goto fail;
 452
 453                                                 command_print(cmd, "repeats %" PRIu32 " %s", count,
 454                                                                 (count == 1) ? "time" : "times");
 455                                                 break;
 456                                         }
 457                                         case ESIRISC_TRACE_EXT_ID_END:
 458                                                 command_print(cmd, "--- end of trace ---");
 459                                                 return ERROR_OK;
 460
 461                                         default:
 462                                                 command_print(cmd, "invalid extended trace ID: %" PRIu32, ext_id);
 463                                                 return ERROR_FAIL;
 464                                 }
 465                                 break;
 466                         }
 467                         default:
 468                                 command_print(cmd, "invalid trace ID: %" PRIu32, id);
 469                                 return ERROR_FAIL;
 470                 }
 471         }
 472
 473 fail:
 474         command_print(cmd, "trace buffer too small");
 475         return ERROR_BUF_TOO_SMALL;
 476 }
 477
 478 static int esirisc_trace_analyze_simple(struct command_invocation *cmd, uint8_t *buffer, uint32_t size)
 479 {
 480         struct target *target = get_current_target(cmd->ctx);
 481         struct esirisc_common *esirisc = target_to_esirisc(target);
 482         struct esirisc_trace *trace_info = &esirisc->trace_info;
 483         const uint32_t end_of_trace = BIT_MASK(trace_info->pc_bits) << 1;
 484         const uint32_t num_bits = size * 8;
 485         int retval;
 486
 487         unsigned pos = 0;
 488         while (pos < num_bits) {
 489                 uint32_t pc;
 490
 491                 retval = esirisc_trace_buf_get_pc(target, buffer, size, &pos, &pc);
 492                 if (retval != ERROR_OK)
 493                         break;
 494
 495                 if (pc == end_of_trace) {
 496                         command_print(cmd, "--- end of trace ---");
 497                         return ERROR_OK;
 498                 }
 499
 500                 command_print(cmd, "PC: 0x%" PRIx32, pc);
 501         }
 502
 503         command_print(cmd, "trace buffer too small");
 504         return ERROR_BUF_TOO_SMALL;
 505 }
 506
 507 static int esirisc_trace_analyze(struct command_invocation *cmd, uint8_t *buffer, uint32_t size)
 508 {
 509         struct target *target = get_current_target(cmd->ctx);
 510         struct esirisc_common *esirisc = target_to_esirisc(target);
 511         struct esirisc_trace *trace_info = &esirisc->trace_info;
 512
 513         switch (trace_info->format) {
 514                 case ESIRISC_TRACE_FORMAT_FULL:
 515                         command_print(cmd, "--- full pipeline ---");
 516                         return esirisc_trace_analyze_full(cmd, buffer, size);
 517
 518                 case ESIRISC_TRACE_FORMAT_BRANCH:
 519                         command_print(cmd, "--- branches taken ---");
 520                         return esirisc_trace_analyze_full(cmd, buffer, size);
 521
 522                 case ESIRISC_TRACE_FORMAT_ICACHE:
 523                         command_print(cmd, "--- icache misses ---");
 524                         return esirisc_trace_analyze_simple(cmd, buffer, size);
 525
 526                 default:
 527                         command_print(cmd, "invalid trace format: %i", trace_info->format);
 528                         return ERROR_FAIL;
 529         }
 530 }
 531
 532 static int esirisc_trace_analyze_buffer(struct command_invocation *cmd)
 533 {
 534         struct target *target = get_current_target(cmd->ctx);
 535         struct esirisc_common *esirisc = target_to_esirisc(target);
 536         struct esirisc_trace *trace_info = &esirisc->trace_info;
 537         uint8_t *buffer;
 538         uint32_t size;
 539         int retval;
 540
 541         size = esirisc_trace_buffer_size(trace_info);
 542         buffer = calloc(1, size);
 543         if (!buffer) {
 544                 command_print(cmd, "out of memory");
 545                 return ERROR_FAIL;
 546         }
 547
 548         retval = esirisc_trace_read_buffer(target, buffer);
 549         if (retval != ERROR_OK)
 550                 goto done;
 551
 552         retval = esirisc_trace_analyze(cmd, buffer, size);
 553
 554 done:
 555         free(buffer);
 556
 557         return retval;
 558 }
 559
 560 static int esirisc_trace_analyze_memory(struct command_invocation *cmd,
 561                 target_addr_t address, uint32_t size)
 562 {
 563         struct target *target = get_current_target(cmd->ctx);
 564         uint8_t *buffer;
 565         int retval;
 566
 567         buffer = calloc(1, size);
 568         if (!buffer) {
 569                 command_print(cmd, "out of memory");
 570                 return ERROR_FAIL;
 571         }
 572
 573         retval = esirisc_trace_read_memory(target, address, size, buffer);
 574         if (retval != ERROR_OK)
 575                 goto done;
 576
 577         retval = esirisc_trace_analyze(cmd, buffer, size);
 578
 579 done:
 580         free(buffer);
 581
 582         return retval;
 583 }
 584
 585 static int esirisc_trace_dump(struct command_invocation *cmd, const char *filename,
 586                 uint8_t *buffer, uint32_t size)
 587 {
 588         struct fileio *fileio;
 589         size_t size_written;
 590         int retval;
 591
 592         retval = fileio_open(&fileio, filename, FILEIO_WRITE, FILEIO_BINARY);
 593         if (retval != ERROR_OK) {
 594                 command_print(cmd, "could not open dump file: %s", filename);
 595                 return retval;
 596         }
 597
 598         retval = fileio_write(fileio, size, buffer, &size_written);
 599         if (retval == ERROR_OK)
 600                 command_print(cmd, "trace data dumped to: %s", filename);
 601         else
 602                 command_print(cmd, "could not write dump file: %s", filename);
 603
 604         fileio_close(fileio);
 605
 606         return retval;
 607 }
 608
 609 static int esirisc_trace_dump_buffer(struct command_invocation *cmd, const char *filename)
 610 {
 611         struct target *target = get_current_target(cmd->ctx);
 612         struct esirisc_common *esirisc = target_to_esirisc(target);
 613         struct esirisc_trace *trace_info = &esirisc->trace_info;
 614         uint8_t *buffer;
 615         uint32_t size;
 616         int retval;
 617
 618         size = esirisc_trace_buffer_size(trace_info);
 619         buffer = calloc(1, size);
 620         if (!buffer) {
 621                 command_print(cmd, "out of memory");
 622                 return ERROR_FAIL;
 623         }
 624
 625         retval = esirisc_trace_read_buffer(target, buffer);
 626         if (retval != ERROR_OK)
 627                 goto done;
 628
 629         retval = esirisc_trace_dump(cmd, filename, buffer, size);
 630
 631 done:
 632         free(buffer);
 633
 634         return retval;
 635 }
 636
 637 static int esirisc_trace_dump_memory(struct command_invocation *cmd, const char *filename,
 638                 target_addr_t address, uint32_t size)
 639 {
 640         struct target *target = get_current_target(cmd->ctx);
 641         uint8_t *buffer;
 642         int retval;
 643
 644         buffer = calloc(1, size);
 645         if (!buffer) {
 646                 command_print(cmd, "out of memory");
 647                 return ERROR_FAIL;
 648         }
 649
 650         retval = esirisc_trace_read_memory(target, address, size, buffer);
 651         if (retval != ERROR_OK)
 652                 goto done;
 653
 654         retval = esirisc_trace_dump(cmd, filename, buffer, size);
 655
 656 done:
 657         free(buffer);
 658
 659         return retval;
 660 }
 661
 662 COMMAND_HANDLER(handle_esirisc_trace_init_command)
 663 {
 664         struct target *target = get_current_target(CMD_CTX);
 665         struct esirisc_common *esirisc = target_to_esirisc(target);
 666
 667         if (!esirisc->has_trace) {
 668                 command_print(CMD, "target does not support trace");
 669                 return ERROR_FAIL;
 670         }
 671
 672         int retval = esirisc_trace_init(target);
 673         if (retval == ERROR_OK)
 674                 command_print(CMD, "trace initialized");
 675
 676         return retval;
 677 }
 678
 679 COMMAND_HANDLER(handle_esirisc_trace_info_command)
 680 {
 681         struct target *target = get_current_target(CMD_CTX);
 682         struct esirisc_common *esirisc = target_to_esirisc(target);
 683         struct esirisc_trace *trace_info = &esirisc->trace_info;
 684
 685         if (!esirisc->has_trace) {
 686                 command_print(CMD, "target does not support trace");
 687                 return ERROR_FAIL;
 688         }
 689
 690         if (esirisc_trace_is_fifo(trace_info))
 691                 command_print(CMD, "trace FIFO address: 0x%" TARGET_PRIxADDR,
 692                                 trace_info->buffer_start);
 693         else {
 694                 command_print(CMD, "trace buffer start: 0x%" TARGET_PRIxADDR,
 695                                 trace_info->buffer_start);
 696                 command_print(CMD, "trace buffer end: 0x%" TARGET_PRIxADDR,
 697                                 trace_info->buffer_end);
 698                 command_print(CMD, "trace buffer will %swrap",
 699                                 trace_info->buffer_wrap ? "" : "not ");
 700         }
 701
 702         command_print(CMD, "flow control: %s",
 703                         trace_info->flow_control ? "enabled" : "disabled");
 704
 705         command_print(CMD, "trace format: %s",
 706                         esirisc_trace_format_strings[trace_info->format]);
 707         command_print(CMD, "number of PC bits: %i", trace_info->pc_bits);
 708
 709         command_print(CMD, "start trigger: %s",
 710                         esirisc_trace_trigger_strings[trace_info->start_trigger]);
 711         command_print(CMD, "start data: 0x%" PRIx32, trace_info->start_data);
 712         command_print(CMD, "start mask: 0x%" PRIx32, trace_info->start_mask);
 713
 714         command_print(CMD, "stop trigger: %s",
 715                         esirisc_trace_trigger_strings[trace_info->stop_trigger]);
 716         command_print(CMD, "stop data: 0x%" PRIx32, trace_info->stop_data);
 717         command_print(CMD, "stop mask: 0x%" PRIx32, trace_info->stop_mask);
 718
 719         command_print(CMD, "trigger delay: %s",
 720                         esirisc_trace_delay_strings[trace_info->delay]);
 721         command_print(CMD, "trigger delay cycles: %" PRIu32, trace_info->delay_cycles);
 722
 723         return ERROR_OK;
 724 }
 725
 726 COMMAND_HANDLER(handle_esirisc_trace_status_command)
 727 {
 728         struct target *target = get_current_target(CMD_CTX);
 729         struct esirisc_common *esirisc = target_to_esirisc(target);
 730         uint32_t status;
 731
 732         if (!esirisc->has_trace) {
 733                 command_print(CMD, "target does not support trace");
 734                 return ERROR_FAIL;
 735         }
 736
 737         int retval = esirisc_trace_get_status(target, &status);
 738         if (retval != ERROR_OK)
 739                 return retval;
 740
 741         command_print(CMD, "trace is %s%s%s%s",
 742                         (status & STATUS_T)  ? "started" : "stopped",
 743                         (status & STATUS_TD) ? ", disabled"   : "",
 744                         (status & STATUS_W)  ? ", wrapped"    : "",
 745                         (status & STATUS_O)  ? ", overflowed" : "");
 746
 747         return ERROR_OK;
 748 }
 749
 750 COMMAND_HANDLER(handle_esirisc_trace_start_command)
 751 {
 752         struct target *target = get_current_target(CMD_CTX);
 753         struct esirisc_common *esirisc = target_to_esirisc(target);
 754
 755         if (!esirisc->has_trace) {
 756                 command_print(CMD, "target does not support trace");
 757                 return ERROR_FAIL;
 758         }
 759
 760         int retval = esirisc_trace_start(target);
 761         if (retval == ERROR_OK)
 762                 command_print(CMD, "trace started");
 763
 764         return retval;
 765 }
 766
 767 COMMAND_HANDLER(handle_esirisc_trace_stop_command)
 768 {
 769         struct target *target = get_current_target(CMD_CTX);
 770         struct esirisc_common *esirisc = target_to_esirisc(target);
 771
 772         if (!esirisc->has_trace) {
 773                 command_print(CMD, "target does not support trace");
 774                 return ERROR_FAIL;
 775         }
 776
 777         int retval = esirisc_trace_stop(target);
 778         if (retval == ERROR_OK)
 779                 command_print(CMD, "trace stopped");
 780
 781         return retval;
 782 }
 783
 784 COMMAND_HANDLER(handle_esirisc_trace_analyze_command)
 785 {
 786         struct target *target = get_current_target(CMD_CTX);
 787         struct esirisc_common *esirisc = target_to_esirisc(target);
 788         struct esirisc_trace *trace_info = &esirisc->trace_info;
 789         target_addr_t address;
 790         uint32_t size;
 791
 792         if (!esirisc->has_trace) {
 793                 command_print(CMD, "target does not support trace");
 794                 return ERROR_FAIL;
 795         }
 796
 797         if (CMD_ARGC != 0 && CMD_ARGC != 2)
 798                 return ERROR_COMMAND_SYNTAX_ERROR;
 799
 800         if (CMD_ARGC == 0) {
 801                 /*
 802                  * Use of the Trace FIFO typically involves DMA to a peripheral
 803                  * (eg. SPI) or a separately managed buffer in memory, neither
 804                  * of which may be under our control. If the destination address
 805                  * and size are known in the latter case, they may be specified
 806                  * as arguments as a workaround.
 807                  */
 808                 if (esirisc_trace_is_fifo(trace_info)) {
 809                         command_print(CMD, "analyze from FIFO not supported");
 810                         return ERROR_FAIL;
 811                 }
 812
 813                 return esirisc_trace_analyze_buffer(CMD);
 814         } else {
 815                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], address);
 816                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
 817
 818                 return esirisc_trace_analyze_memory(CMD, address, size);
 819         }
 820 }
 821
 822 COMMAND_HANDLER(handle_esirisc_trace_dump_command)
 823 {
 824         struct target *target = get_current_target(CMD_CTX);
 825         struct esirisc_common *esirisc = target_to_esirisc(target);
 826         struct esirisc_trace *trace_info = &esirisc->trace_info;
 827         target_addr_t address;
 828         uint32_t size;
 829
 830         if (!esirisc->has_trace) {
 831                 command_print(CMD, "target does not support trace");
 832                 return ERROR_FAIL;
 833         }
 834
 835         if (CMD_ARGC != 1 && CMD_ARGC != 3)
 836                 return ERROR_COMMAND_SYNTAX_ERROR;
 837
 838         if (CMD_ARGC == 1) {
 839                 /* also see: handle_esirisc_trace_analyze_command() */
 840                 if (esirisc_trace_is_fifo(trace_info)) {
 841                         command_print(CMD, "dump from FIFO not supported");
 842                         return ERROR_FAIL;
 843                 }
 844
 845                 return esirisc_trace_dump_buffer(CMD, CMD_ARGV[0]);
 846         } else {
 847                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], address);
 848                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
 849
 850                 return esirisc_trace_dump_memory(CMD, CMD_ARGV[2], address, size);
 851         }
 852 }
 853
 854 COMMAND_HANDLER(handle_esirisc_trace_buffer_command)
 855 {
 856         struct target *target = get_current_target(CMD_CTX);
 857         struct esirisc_common *esirisc = target_to_esirisc(target);
 858         struct esirisc_trace *trace_info = &esirisc->trace_info;
 859         uint32_t size;
 860
 861         if (CMD_ARGC < 2 || CMD_ARGC > 3)
 862                 return ERROR_COMMAND_SYNTAX_ERROR;
 863
 864         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], trace_info->buffer_start);
 865         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
 866
 867         trace_info->buffer_end = trace_info->buffer_start + size;
 868
 869         if (CMD_ARGC == 3) {
 870                 if (strcmp("wrap", CMD_ARGV[2]) == 0)
 871                         trace_info->buffer_wrap = true;
 872                 else
 873                         return ERROR_COMMAND_SYNTAX_ERROR;
 874         }
 875
 876         return ERROR_OK;
 877 }
 878
 879 COMMAND_HANDLER(handle_esirisc_trace_fifo_command)
 880 {
 881         struct target *target = get_current_target(CMD_CTX);
 882         struct esirisc_common *esirisc = target_to_esirisc(target);
 883         struct esirisc_trace *trace_info = &esirisc->trace_info;
 884
 885         if (CMD_ARGC != 1)
 886                 return ERROR_COMMAND_SYNTAX_ERROR;
 887
 888         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], trace_info->buffer_start);
 889
 890         /* FIFOs have the same start and end address */
 891         trace_info->buffer_end = trace_info->buffer_start;
 892         trace_info->buffer_wrap = true;
 893
 894         return ERROR_OK;
 895 }
 896
 897 COMMAND_HANDLER(handle_esirisc_trace_flow_control_command)
 898 {
 899         struct target *target = get_current_target(CMD_CTX);
 900         struct esirisc_common *esirisc = target_to_esirisc(target);
 901         struct esirisc_trace *trace_info = &esirisc->trace_info;
 902
 903         if (CMD_ARGC != 1)
 904                 return ERROR_COMMAND_SYNTAX_ERROR;
 905
 906         if (strcmp(CMD_ARGV[0], "enable") == 0)
 907                 trace_info->flow_control = true;
 908         else if (strcmp(CMD_ARGV[0], "disable") == 0)
 909                 trace_info->flow_control = false;
 910         else
 911                 return ERROR_COMMAND_SYNTAX_ERROR;
 912
 913         return ERROR_OK;
 914 }
 915
 916 COMMAND_HANDLER(handle_esirisc_trace_format_command)
 917 {
 918         struct target *target = get_current_target(CMD_CTX);
 919         struct esirisc_common *esirisc = target_to_esirisc(target);
 920         struct esirisc_trace *trace_info = &esirisc->trace_info;
 921         int pc_bits;
 922
 923         if (CMD_ARGC != 2)
 924                 return ERROR_COMMAND_SYNTAX_ERROR;
 925
 926         if (strcmp(CMD_ARGV[0], "full") == 0)
 927                 trace_info->format = ESIRISC_TRACE_FORMAT_FULL;
 928         else if (strcmp(CMD_ARGV[0], "branch") == 0)
 929                 trace_info->format = ESIRISC_TRACE_FORMAT_BRANCH;
 930         else if (strcmp(CMD_ARGV[0], "icache") == 0)
 931                 trace_info->format = ESIRISC_TRACE_FORMAT_ICACHE;
 932         else
 933                 return ERROR_COMMAND_SYNTAX_ERROR;
 934
 935         COMMAND_PARSE_NUMBER(int, CMD_ARGV[1], pc_bits);
 936
 937         if (pc_bits < 1 || pc_bits > 31) {
 938                 command_print(CMD, "invalid pc_bits: %i; must be 1..31", pc_bits);
 939                 return ERROR_COMMAND_SYNTAX_ERROR;
 940         }
 941
 942         trace_info->pc_bits = pc_bits;
 943
 944         return ERROR_OK;
 945 }
 946
 947 COMMAND_HANDLER(handle_esirisc_trace_trigger_start_command)
 948 {
 949         struct target *target = get_current_target(CMD_CTX);
 950         struct esirisc_common *esirisc = target_to_esirisc(target);
 951         struct esirisc_trace *trace_info = &esirisc->trace_info;
 952
 953         if (CMD_ARGC != 1 && CMD_ARGC != 3)
 954                 return ERROR_COMMAND_SYNTAX_ERROR;
 955
 956         if (strcmp(CMD_ARGV[0], "none") == 0)
 957                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_NONE;
 958         else if (strcmp(CMD_ARGV[0], "pc") == 0)
 959                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_PC;
 960         else if (strcmp(CMD_ARGV[0], "load") == 0)
 961                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_LOAD;
 962         else if (strcmp(CMD_ARGV[0], "store") == 0)
 963                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_STORE;
 964         else if (strcmp(CMD_ARGV[0], "exception") == 0)
 965                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_EXCEPTION;
 966         else if (strcmp(CMD_ARGV[0], "eret") == 0)
 967                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_ERET;
 968         else if (strcmp(CMD_ARGV[0], "wait") == 0)
 969                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_WAIT;
 970         else if (strcmp(CMD_ARGV[0], "stop") == 0)
 971                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_STOP;
 972         else if (strcmp(CMD_ARGV[0], "high") == 0)
 973                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_HIGH;
 974         else if (strcmp(CMD_ARGV[0], "low") == 0)
 975                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_LOW;
 976         else
 977                 return ERROR_COMMAND_SYNTAX_ERROR;
 978
 979         if (CMD_ARGC == 3) {
 980                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], trace_info->start_data);
 981                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], trace_info->start_mask);
 982         } else {
 983                 trace_info->start_data = 0;
 984                 trace_info->start_mask = 0;
 985         }
 986
 987         return ERROR_OK;
 988 }
 989
 990 COMMAND_HANDLER(handle_esirisc_trace_trigger_stop_command)
 991 {
 992         struct target *target = get_current_target(CMD_CTX);
 993         struct esirisc_common *esirisc = target_to_esirisc(target);
 994         struct esirisc_trace *trace_info = &esirisc->trace_info;
 995
 996         if (CMD_ARGC != 1 && CMD_ARGC != 3)
 997                 return ERROR_COMMAND_SYNTAX_ERROR;
 998
 999         if (strcmp(CMD_ARGV[0], "none") == 0)
1000                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_NONE;
1001         else if (strcmp(CMD_ARGV[0], "pc") == 0)
1002                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_PC;
1003         else if (strcmp(CMD_ARGV[0], "load") == 0)
1004                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_LOAD;
1005         else if (strcmp(CMD_ARGV[0], "store") == 0)
1006                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_STORE;
1007         else if (strcmp(CMD_ARGV[0], "exception") == 0)
1008                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_EXCEPTION;
1009         else if (strcmp(CMD_ARGV[0], "eret") == 0)
1010                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_ERET;
1011         else if (strcmp(CMD_ARGV[0], "wait") == 0)
1012                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_WAIT;
1013         else if (strcmp(CMD_ARGV[0], "stop") == 0)
1014                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_STOP;
1015         else
1016                 return ERROR_COMMAND_SYNTAX_ERROR;
1017
1018         if (CMD_ARGC == 3) {
1019                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], trace_info->stop_data);
1020                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], trace_info->stop_mask);
1021         } else {
1022                 trace_info->stop_data = 0;
1023                 trace_info->stop_mask = 0;
1024         }
1025
1026         return ERROR_OK;
1027 }
1028
1029 COMMAND_HANDLER(handle_esirisc_trace_trigger_delay_command)
1030 {
1031         struct target *target = get_current_target(CMD_CTX);
1032         struct esirisc_common *esirisc = target_to_esirisc(target);
1033         struct esirisc_trace *trace_info = &esirisc->trace_info;
1034
1035         if (CMD_ARGC < 1 || CMD_ARGC > 2)
1036                 return ERROR_COMMAND_SYNTAX_ERROR;
1037
1038         if (strcmp(CMD_ARGV[0], "none") == 0)
1039                 trace_info->delay = ESIRISC_TRACE_DELAY_NONE;
1040         else if (strcmp(CMD_ARGV[0], "start") == 0)
1041                 trace_info->delay = ESIRISC_TRACE_DELAY_START;
1042         else if (strcmp(CMD_ARGV[0], "stop") == 0)
1043                 trace_info->delay = ESIRISC_TRACE_DELAY_STOP;
1044         else if (strcmp(CMD_ARGV[0], "both") == 0)
1045                 trace_info->delay = ESIRISC_TRACE_DELAY_BOTH;
1046         else
1047                 return ERROR_COMMAND_SYNTAX_ERROR;
1048
1049         if (trace_info->delay == ESIRISC_TRACE_DELAY_NONE)
1050                 trace_info->delay_cycles = 0;
1051         else {
1052                 if (CMD_ARGC != 2)
1053                         return ERROR_COMMAND_SYNTAX_ERROR;
1054
1055                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], trace_info->delay_cycles);
1056         }
1057
1058         return ERROR_OK;
1059 }
1060
1061 static const struct command_registration esirisc_trace_exec_command_handlers[] = {
1062         {
1063                 .name = "init",
1064                 .handler = handle_esirisc_trace_init_command,
1065                 .mode = COMMAND_EXEC,
1066                 .help = "initialize trace collection",
1067                 .usage = "",
1068         },
1069         {
1070                 .name = "info",
1071                 .handler = handle_esirisc_trace_info_command,
1072                 .mode = COMMAND_EXEC,
1073                 .help = "display trace configuration",
1074                 .usage = "",
1075         },
1076         {
1077                 .name = "status",
1078                 .handler = handle_esirisc_trace_status_command,
1079                 .mode = COMMAND_EXEC,
1080                 .help = "display trace collection status",
1081                 .usage = "",
1082         },
1083         {
1084                 .name = "start",
1085                 .handler = handle_esirisc_trace_start_command,
1086                 .mode = COMMAND_EXEC,
1087                 .help = "start trace collection",
1088                 .usage = "",
1089         },
1090         {
1091                 .name = "stop",
1092                 .handler = handle_esirisc_trace_stop_command,
1093                 .mode = COMMAND_EXEC,
1094                 .help = "stop trace collection",
1095                 .usage = "",
1096         },
1097         {
1098                 .name = "analyze",
1099                 .handler = handle_esirisc_trace_analyze_command,
1100                 .mode = COMMAND_EXEC,
1101                 .usage = "[address size]",
1102                 .help = "analyze collected trace data",
1103         },
1104         {
1105                 .name = "dump",
1106                 .handler = handle_esirisc_trace_dump_command,
1107                 .mode = COMMAND_EXEC,
1108                 .help = "dump collected trace data to file",
1109                 .usage = "[address size] filename",
1110         },
1111         COMMAND_REGISTRATION_DONE
1112 };
1113
1114 static const struct command_registration esirisc_trace_trigger_any_command_handlers[] = {
1115         {
1116                 .name = "start",
1117                 .handler = handle_esirisc_trace_trigger_start_command,
1118                 .mode = COMMAND_ANY,
1119                 .help = "configure trigger start condition",
1120                 .usage = "('none'|'pc'|'load'|'store'|'exception'|'eret'|'wait'|'stop'|'high'|'low')"
1121                                  " [start_data start_mask]",
1122         },
1123         {
1124                 .name = "stop",
1125                 .handler = handle_esirisc_trace_trigger_stop_command,
1126                 .mode = COMMAND_ANY,
1127                 .help = "configure trigger stop condition",
1128                 .usage = "('none'|'pc'|'load'|'store'|'exception'|'eret'|'wait'|'stop')"
1129                                  " [stop_data stop_mask]",
1130         },
1131         {
1132                 .name = "delay",
1133                 .handler = handle_esirisc_trace_trigger_delay_command,
1134                 .mode = COMMAND_ANY,
1135                 .help = "configure trigger start/stop delay in clock cycles",
1136                 .usage = "('none'|'start'|'stop'|'both') [cycles]",
1137         },
1138         COMMAND_REGISTRATION_DONE
1139 };
1140
1141 static const struct command_registration esirisc_trace_any_command_handlers[] = {
1142         {
1143                 .name = "buffer",
1144                 .handler = handle_esirisc_trace_buffer_command,
1145                 .mode = COMMAND_ANY,
1146                 .help = "configure trace buffer",
1147                 .usage = "address size ['wrap']",
1148         },
1149         {
1150                 .name = "fifo",
1151                 .handler = handle_esirisc_trace_fifo_command,
1152                 .mode = COMMAND_ANY,
1153                 .help = "configure trace FIFO",
1154                 .usage = "address",
1155         },
1156         {
1157                 .name = "flow_control",
1158                 .handler = handle_esirisc_trace_flow_control_command,
1159                 .mode = COMMAND_ANY,
1160                 .help = "enable or disable stalling CPU to collect trace data",
1161                 .usage = "('enable'|'disable')",
1162         },
1163         {
1164                 .name = "format",
1165                 .handler = handle_esirisc_trace_format_command,
1166                 .mode = COMMAND_ANY,
1167                 .help = "configure trace format",
1168                 .usage = "('full'|'branch'|'icache') pc_bits",
1169         },
1170         {
1171                 .name = "trigger",
1172                 .mode = COMMAND_ANY,
1173                 .help = "eSi-Trace trigger command group",
1174                 .usage = "",
1175                 .chain = esirisc_trace_trigger_any_command_handlers,
1176         },
1177         {
1178                 .chain = esirisc_trace_exec_command_handlers
1179         },
1180         COMMAND_REGISTRATION_DONE
1181 };
1182
1183 const struct command_registration esirisc_trace_command_handlers[] = {
1184         {
1185                 .name = "trace",
1186                 .mode = COMMAND_ANY,
1187                 .help = "eSi-Trace command group",
1188                 .usage = "",
1189                 .chain = esirisc_trace_any_command_handlers,
1190         },
1191         COMMAND_REGISTRATION_DONE
1192 };