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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <string.h>
  25
  26 #include "etm.h"
  27 #include "etb.h"
  28
  29 #include "armv4_5.h"
  30 #include "arm7_9_common.h"
  31 #include "arm_disassembler.h"
  32 #include "arm_simulator.h"
  33
  34 #include "log.h"
  35 #include "arm_jtag.h"
  36 #include "types.h"
  37 #include "binarybuffer.h"
  38 #include "target.h"
  39 #include "register.h"
  40 #include "jtag.h"
  41 #include "fileio.h"
  42
  43 #include <stdlib.h>
  44
  45 /* ETM register access functionality
  46  *
  47  */
  48
  49 #if 0
  50 static bitfield_desc_t etm_comms_ctrl_bitfield_desc[] =
  51 {
  52         {"R", 1},
  53         {"W", 1},
  54         {"reserved", 26},
  55         {"version", 4}
  56 };
  57 #endif
  58
  59 static int etm_reg_arch_info[] =
  60 {
  61         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  62         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  63         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  64         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  65         0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
  66         0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
  67         0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
  68         0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
  69         0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
  70         0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
  71         0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
  72         0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
  73         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x67,
  74         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  75 };
  76
  77 static int etm_reg_arch_size_info[] =
  78 {
  79         32, 32, 17, 8, 3, 9, 32, 16,
  80         17, 26, 25, 8, 17, 32, 32, 17,
  81         32, 32, 32, 32, 32, 32, 32, 32,
  82         32, 32, 32, 32, 32, 32, 32, 32,
  83         7, 7, 7, 7, 7, 7, 7, 7,
  84         7, 7, 7, 7, 7, 7, 7, 7,
  85         32, 32, 32, 32, 32, 32, 32, 32,
  86         32, 32, 32, 32, 32, 32, 32, 32,
  87         32, 32, 32, 32, 32, 32, 32, 32,
  88         32, 32, 32, 32, 32, 32, 32, 32,
  89         16, 16, 16, 16, 18, 18, 18, 18,
  90         17, 17, 17, 17, 16, 16, 16, 16,
  91         17, 17, 17, 17, 17, 17, 2,
  92         17, 17, 17, 17, 32, 32, 32, 32
  93 };
  94
  95 static char* etm_reg_list[] =
  96 {
  97         "ETM_CTRL",
  98         "ETM_CONFIG",
  99         "ETM_TRIG_EVENT",
 100         "ETM_MMD_CTRL",
 101         "ETM_STATUS",
 102         "ETM_SYS_CONFIG",
 103         "ETM_TRACE_RESOURCE_CTRL",
 104         "ETM_TRACE_EN_CTRL2",
 105         "ETM_TRACE_EN_EVENT",
 106         "ETM_TRACE_EN_CTRL1",
 107         "ETM_FIFOFULL_REGION",
 108         "ETM_FIFOFULL_LEVEL",
 109         "ETM_VIEWDATA_EVENT",
 110         "ETM_VIEWDATA_CTRL1",
 111         "ETM_VIEWDATA_CTRL2",
 112         "ETM_VIEWDATA_CTRL3",
 113         "ETM_ADDR_COMPARATOR_VALUE1",
 114         "ETM_ADDR_COMPARATOR_VALUE2",
 115         "ETM_ADDR_COMPARATOR_VALUE3",
 116         "ETM_ADDR_COMPARATOR_VALUE4",
 117         "ETM_ADDR_COMPARATOR_VALUE5",
 118         "ETM_ADDR_COMPARATOR_VALUE6",
 119         "ETM_ADDR_COMPARATOR_VALUE7",
 120         "ETM_ADDR_COMPARATOR_VALUE8",
 121         "ETM_ADDR_COMPARATOR_VALUE9",
 122         "ETM_ADDR_COMPARATOR_VALUE10",
 123         "ETM_ADDR_COMPARATOR_VALUE11",
 124         "ETM_ADDR_COMPARATOR_VALUE12",
 125         "ETM_ADDR_COMPARATOR_VALUE13",
 126         "ETM_ADDR_COMPARATOR_VALUE14",
 127         "ETM_ADDR_COMPARATOR_VALUE15",
 128         "ETM_ADDR_COMPARATOR_VALUE16",
 129         "ETM_ADDR_ACCESS_TYPE1",
 130         "ETM_ADDR_ACCESS_TYPE2",
 131         "ETM_ADDR_ACCESS_TYPE3",
 132         "ETM_ADDR_ACCESS_TYPE4",
 133         "ETM_ADDR_ACCESS_TYPE5",
 134         "ETM_ADDR_ACCESS_TYPE6",
 135         "ETM_ADDR_ACCESS_TYPE7",
 136         "ETM_ADDR_ACCESS_TYPE8",
 137         "ETM_ADDR_ACCESS_TYPE9",
 138         "ETM_ADDR_ACCESS_TYPE10",
 139         "ETM_ADDR_ACCESS_TYPE11",
 140         "ETM_ADDR_ACCESS_TYPE12",
 141         "ETM_ADDR_ACCESS_TYPE13",
 142         "ETM_ADDR_ACCESS_TYPE14",
 143         "ETM_ADDR_ACCESS_TYPE15",
 144         "ETM_ADDR_ACCESS_TYPE16",
 145         "ETM_DATA_COMPARATOR_VALUE1",
 146         "ETM_DATA_COMPARATOR_VALUE2",
 147         "ETM_DATA_COMPARATOR_VALUE3",
 148         "ETM_DATA_COMPARATOR_VALUE4",
 149         "ETM_DATA_COMPARATOR_VALUE5",
 150         "ETM_DATA_COMPARATOR_VALUE6",
 151         "ETM_DATA_COMPARATOR_VALUE7",
 152         "ETM_DATA_COMPARATOR_VALUE8",
 153         "ETM_DATA_COMPARATOR_VALUE9",
 154         "ETM_DATA_COMPARATOR_VALUE10",
 155         "ETM_DATA_COMPARATOR_VALUE11",
 156         "ETM_DATA_COMPARATOR_VALUE12",
 157         "ETM_DATA_COMPARATOR_VALUE13",
 158         "ETM_DATA_COMPARATOR_VALUE14",
 159         "ETM_DATA_COMPARATOR_VALUE15",
 160         "ETM_DATA_COMPARATOR_VALUE16",
 161         "ETM_DATA_COMPARATOR_MASK1",
 162         "ETM_DATA_COMPARATOR_MASK2",
 163         "ETM_DATA_COMPARATOR_MASK3",
 164         "ETM_DATA_COMPARATOR_MASK4",
 165         "ETM_DATA_COMPARATOR_MASK5",
 166         "ETM_DATA_COMPARATOR_MASK6",
 167         "ETM_DATA_COMPARATOR_MASK7",
 168         "ETM_DATA_COMPARATOR_MASK8",
 169         "ETM_DATA_COMPARATOR_MASK9",
 170         "ETM_DATA_COMPARATOR_MASK10",
 171         "ETM_DATA_COMPARATOR_MASK11",
 172         "ETM_DATA_COMPARATOR_MASK12",
 173         "ETM_DATA_COMPARATOR_MASK13",
 174         "ETM_DATA_COMPARATOR_MASK14",
 175         "ETM_DATA_COMPARATOR_MASK15",
 176         "ETM_DATA_COMPARATOR_MASK16",
 177         "ETM_COUNTER_INITAL_VALUE1",
 178         "ETM_COUNTER_INITAL_VALUE2",
 179         "ETM_COUNTER_INITAL_VALUE3",
 180         "ETM_COUNTER_INITAL_VALUE4",
 181         "ETM_COUNTER_ENABLE1",
 182         "ETM_COUNTER_ENABLE2",
 183         "ETM_COUNTER_ENABLE3",
 184         "ETM_COUNTER_ENABLE4",
 185         "ETM_COUNTER_RELOAD_VALUE1",
 186         "ETM_COUNTER_RELOAD_VALUE2",
 187         "ETM_COUNTER_RELOAD_VALUE3",
 188         "ETM_COUNTER_RELOAD_VALUE4",
 189         "ETM_COUNTER_VALUE1",
 190         "ETM_COUNTER_VALUE2",
 191         "ETM_COUNTER_VALUE3",
 192         "ETM_COUNTER_VALUE4",
 193         "ETM_SEQUENCER_CTRL1",
 194         "ETM_SEQUENCER_CTRL2",
 195         "ETM_SEQUENCER_CTRL3",
 196         "ETM_SEQUENCER_CTRL4",
 197         "ETM_SEQUENCER_CTRL5",
 198         "ETM_SEQUENCER_CTRL6",
 199         "ETM_SEQUENCER_STATE",
 200         "ETM_EXTERNAL_OUTPUT1",
 201         "ETM_EXTERNAL_OUTPUT2",
 202         "ETM_EXTERNAL_OUTPUT3",
 203         "ETM_EXTERNAL_OUTPUT4",
 204         "ETM_CONTEXTID_COMPARATOR_VALUE1",
 205         "ETM_CONTEXTID_COMPARATOR_VALUE2",
 206         "ETM_CONTEXTID_COMPARATOR_VALUE3",
 207         "ETM_CONTEXTID_COMPARATOR_MASK"
 208 };
 209
 210 static int etm_reg_arch_type = -1;
 211
 212 static int etm_get_reg(reg_t *reg);
 213
 214 static command_t *etm_cmd = NULL;
 215
 216 reg_cache_t* etm_build_reg_cache(target_t *target, arm_jtag_t *jtag_info, etm_context_t *etm_ctx)
 217 {
 218         reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t));
 219         reg_t *reg_list = NULL;
 220         etm_reg_t *arch_info = NULL;
 221         int num_regs = sizeof(etm_reg_arch_info)/sizeof(int);
 222         int i;
 223
 224         /* register a register arch-type for etm registers only once */
 225         if (etm_reg_arch_type == -1)
 226                 etm_reg_arch_type = register_reg_arch_type(etm_get_reg, etm_set_reg_w_exec);
 227
 228         /* the actual registers are kept in two arrays */
 229         reg_list = calloc(num_regs, sizeof(reg_t));
 230         arch_info = calloc(num_regs, sizeof(etm_reg_t));
 231
 232         /* fill in values for the reg cache */
 233         reg_cache->name = "etm registers";
 234         reg_cache->next = NULL;
 235         reg_cache->reg_list = reg_list;
 236         reg_cache->num_regs = num_regs;
 237
 238         /* set up registers */
 239         for (i = 0; i < num_regs; i++)
 240         {
 241                 reg_list[i].name = etm_reg_list[i];
 242                 reg_list[i].size = 32;
 243                 reg_list[i].dirty = 0;
 244                 reg_list[i].valid = 0;
 245                 reg_list[i].bitfield_desc = NULL;
 246                 reg_list[i].num_bitfields = 0;
 247                 reg_list[i].value = calloc(1, 4);
 248                 reg_list[i].arch_info = &arch_info[i];
 249                 reg_list[i].arch_type = etm_reg_arch_type;
 250                 reg_list[i].size = etm_reg_arch_size_info[i];
 251                 arch_info[i].addr = etm_reg_arch_info[i];
 252                 arch_info[i].jtag_info = jtag_info;
 253         }
 254
 255         /* the ETM might have an ETB connected */
 256         if (strcmp(etm_ctx->capture_driver->name, "etb") == 0)
 257         {
 258                 etb_t *etb = etm_ctx->capture_driver_priv;
 259
 260                 if (!etb)
 261                 {
 262                         LOG_ERROR("etb selected as etm capture driver, but no ETB configured");
 263                         return ERROR_OK;
 264                 }
 265
 266                 reg_cache->next = etb_build_reg_cache(etb);
 267
 268                 etb->reg_cache = reg_cache->next;
 269         }
 270
 271
 272         return reg_cache;
 273 }
 274
 275 int etm_setup(target_t *target)
 276 {
 277         int retval;
 278         u32 etm_ctrl_value;
 279         armv4_5_common_t *armv4_5 = target->arch_info;
 280         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 281         etm_context_t *etm_ctx = arm7_9->etm_ctx;
 282         reg_t *etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL];
 283         /* initialize some ETM control register settings */
 284         etm_get_reg(etm_ctrl_reg);
 285         etm_ctrl_value = buf_get_u32(etm_ctrl_reg->value, 0, etm_ctrl_reg->size);
 286
 287         /* clear the ETM powerdown bit (0) */
 288         etm_ctrl_value &= ~0x1;
 289
 290         /* configure port width (6:4), mode (17:16) and clocking (13) */
 291         etm_ctrl_value = (etm_ctrl_value &
 292                 ~ETM_PORT_WIDTH_MASK & ~ETM_PORT_MODE_MASK & ~ETM_PORT_CLOCK_MASK)
 293                 | etm_ctx->portmode;
 294
 295         buf_set_u32(etm_ctrl_reg->value, 0, etm_ctrl_reg->size, etm_ctrl_value);
 296         etm_store_reg(etm_ctrl_reg);
 297
 298         if ((retval=jtag_execute_queue())!=ERROR_OK)
 299                 return retval;
 300
 301         if ((retval=etm_ctx->capture_driver->init(etm_ctx)) != ERROR_OK)
 302         {
 303                 LOG_ERROR("ETM capture driver initialization failed");
 304                 return retval;
 305         }
 306         return ERROR_OK;
 307 }
 308
 309 int etm_get_reg(reg_t *reg)
 310 {
 311         int retval;
 312         if ((retval = etm_read_reg(reg)) != ERROR_OK)
 313         {
 314                 LOG_ERROR("BUG: error scheduling etm register read");
 315                 return retval;
 316         }
 317
 318         if ((retval = jtag_execute_queue()) != ERROR_OK)
 319         {
 320                 LOG_ERROR("register read failed");
 321                 return retval;
 322         }
 323
 324         return ERROR_OK;
 325 }
 326
 327 int etm_read_reg_w_check(reg_t *reg, u8* check_value, u8* check_mask)
 328 {
 329         etm_reg_t *etm_reg = reg->arch_info;
 330         u8 reg_addr = etm_reg->addr & 0x7f;
 331         scan_field_t fields[3];
 332
 333         LOG_DEBUG("%i", etm_reg->addr);
 334
 335         jtag_add_end_state(TAP_IDLE);
 336         arm_jtag_scann(etm_reg->jtag_info, 0x6);
 337         arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
 338
 339         fields[0].tap = etm_reg->jtag_info->tap;
 340         fields[0].num_bits = 32;
 341         fields[0].out_value = reg->value;
 342
 343         fields[0].in_value = NULL;
 344         fields[0].in_check_value = NULL;
 345         fields[0].in_check_mask = NULL;
 346         fields[0].in_handler = NULL;
 347         fields[0].in_handler_priv = NULL;
 348
 349         fields[1].tap = etm_reg->jtag_info->tap;
 350         fields[1].num_bits = 7;
 351         fields[1].out_value = malloc(1);
 352         buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
 353
 354         fields[1].in_value = NULL;
 355         fields[1].in_check_value = NULL;
 356         fields[1].in_check_mask = NULL;
 357         fields[1].in_handler = NULL;
 358         fields[1].in_handler_priv = NULL;
 359
 360         fields[2].tap = etm_reg->jtag_info->tap;
 361         fields[2].num_bits = 1;
 362         fields[2].out_value = malloc(1);
 363         buf_set_u32(fields[2].out_value, 0, 1, 0);
 364
 365         fields[2].in_value = NULL;
 366         fields[2].in_check_value = NULL;
 367         fields[2].in_check_mask = NULL;
 368         fields[2].in_handler = NULL;
 369         fields[2].in_handler_priv = NULL;
 370
 371         jtag_add_dr_scan(3, fields, TAP_INVALID);
 372
 373         fields[0].in_value = reg->value;
 374         jtag_set_check_value(fields+0, check_value, check_mask, NULL);
 375
 376         jtag_add_dr_scan(3, fields, TAP_INVALID);
 377
 378         free(fields[1].out_value);
 379         free(fields[2].out_value);
 380
 381         return ERROR_OK;
 382 }
 383
 384 int etm_read_reg(reg_t *reg)
 385 {
 386         return etm_read_reg_w_check(reg, NULL, NULL);
 387 }
 388
 389 int etm_set_reg(reg_t *reg, u32 value)
 390 {
 391         int retval;
 392         if ((retval = etm_write_reg(reg, value)) != ERROR_OK)
 393         {
 394                 LOG_ERROR("BUG: error scheduling etm register write");
 395                 return retval;
 396         }
 397
 398         buf_set_u32(reg->value, 0, reg->size, value);
 399         reg->valid = 1;
 400         reg->dirty = 0;
 401
 402         return ERROR_OK;
 403 }
 404
 405 int etm_set_reg_w_exec(reg_t *reg, u8 *buf)
 406 {
 407         int retval;
 408         etm_set_reg(reg, buf_get_u32(buf, 0, reg->size));
 409
 410         if ((retval = jtag_execute_queue()) != ERROR_OK)
 411         {
 412                 LOG_ERROR("register write failed");
 413                 return retval;
 414         }
 415         return ERROR_OK;
 416 }
 417
 418 int etm_write_reg(reg_t *reg, u32 value)
 419 {
 420         etm_reg_t *etm_reg = reg->arch_info;
 421         u8 reg_addr = etm_reg->addr & 0x7f;
 422         scan_field_t fields[3];
 423
 424         LOG_DEBUG("%i: 0x%8.8x", etm_reg->addr, value);
 425
 426         jtag_add_end_state(TAP_IDLE);
 427         arm_jtag_scann(etm_reg->jtag_info, 0x6);
 428         arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL);
 429
 430         fields[0].tap = etm_reg->jtag_info->tap;
 431         fields[0].num_bits = 32;
 432         fields[0].out_value = malloc(4);
 433         buf_set_u32(fields[0].out_value, 0, 32, value);
 434
 435         fields[0].in_value = NULL;
 436         fields[0].in_check_value = NULL;
 437         fields[0].in_check_mask = NULL;
 438         fields[0].in_handler = NULL;
 439         fields[0].in_handler_priv = NULL;
 440
 441         fields[1].tap = etm_reg->jtag_info->tap;
 442         fields[1].num_bits = 7;
 443         fields[1].out_value = malloc(1);
 444         buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
 445
 446         fields[1].in_value = NULL;
 447         fields[1].in_check_value = NULL;
 448         fields[1].in_check_mask = NULL;
 449         fields[1].in_handler = NULL;
 450         fields[1].in_handler_priv = NULL;
 451
 452         fields[2].tap = etm_reg->jtag_info->tap;
 453         fields[2].num_bits = 1;
 454         fields[2].out_value = malloc(1);
 455         buf_set_u32(fields[2].out_value, 0, 1, 1);
 456
 457         fields[2].in_value = NULL;
 458         fields[2].in_check_value = NULL;
 459         fields[2].in_check_mask = NULL;
 460         fields[2].in_handler = NULL;
 461         fields[2].in_handler_priv = NULL;
 462
 463         jtag_add_dr_scan(3, fields, TAP_INVALID);
 464
 465         free(fields[0].out_value);
 466         free(fields[1].out_value);
 467         free(fields[2].out_value);
 468
 469         return ERROR_OK;
 470 }
 471
 472 int etm_store_reg(reg_t *reg)
 473 {
 474         return etm_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
 475 }
 476
 477 /* ETM trace analysis functionality
 478  *
 479  */
 480 extern etm_capture_driver_t etm_dummy_capture_driver;
 481 #if BUILD_OOCD_TRACE == 1
 482 extern etm_capture_driver_t oocd_trace_capture_driver;
 483 #endif
 484
 485 static etm_capture_driver_t *etm_capture_drivers[] =
 486 {
 487         &etb_capture_driver,
 488         &etm_dummy_capture_driver,
 489 #if BUILD_OOCD_TRACE == 1
 490         &oocd_trace_capture_driver,
 491 #endif
 492         NULL
 493 };
 494
 495 char *etmv1v1_branch_reason_strings[] =
 496 {
 497         "normal PC change",
 498         "tracing enabled",
 499         "trace restarted after overflow",
 500         "exit from debug",
 501         "periodic synchronization",
 502         "reserved",
 503         "reserved",
 504         "reserved",
 505 };
 506
 507 static int etm_read_instruction(etm_context_t *ctx, arm_instruction_t *instruction)
 508 {
 509         int i;
 510         int section = -1;
 511         u32 size_read;
 512         u32 opcode;
 513         int retval;
 514
 515         if (!ctx->image)
 516                 return ERROR_TRACE_IMAGE_UNAVAILABLE;
 517
 518         /* search for the section the current instruction belongs to */
 519         for (i = 0; i < ctx->image->num_sections; i++)
 520         {
 521                 if ((ctx->image->sections[i].base_address <= ctx->current_pc) &&
 522                         (ctx->image->sections[i].base_address + ctx->image->sections[i].size > ctx->current_pc))
 523                 {
 524                         section = i;
 525                         break;
 526                 }
 527         }
 528
 529         if (section == -1)
 530         {
 531                 /* current instruction couldn't be found in the image */
 532                 return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
 533         }
 534
 535         if (ctx->core_state == ARMV4_5_STATE_ARM)
 536         {
 537                 u8 buf[4];
 538                 if ((retval = image_read_section(ctx->image, section,
 539                         ctx->current_pc - ctx->image->sections[section].base_address,
 540                         4, buf, &size_read)) != ERROR_OK)
 541                 {
 542                         LOG_ERROR("error while reading instruction: %i", retval);
 543                         return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
 544                 }
 545                 opcode = target_buffer_get_u32(ctx->target, buf);
 546                 arm_evaluate_opcode(opcode, ctx->current_pc, instruction);
 547         }
 548         else if (ctx->core_state == ARMV4_5_STATE_THUMB)
 549         {
 550                 u8 buf[2];
 551                 if ((retval = image_read_section(ctx->image, section,
 552                         ctx->current_pc - ctx->image->sections[section].base_address,
 553                         2, buf, &size_read)) != ERROR_OK)
 554                 {
 555                         LOG_ERROR("error while reading instruction: %i", retval);
 556                         return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
 557                 }
 558                 opcode = target_buffer_get_u16(ctx->target, buf);
 559                 thumb_evaluate_opcode(opcode, ctx->current_pc, instruction);
 560         }
 561         else if (ctx->core_state == ARMV4_5_STATE_JAZELLE)
 562         {
 563                 LOG_ERROR("BUG: tracing of jazelle code not supported");
 564                 exit(-1);
 565         }
 566         else
 567         {
 568                 LOG_ERROR("BUG: unknown core state encountered");
 569                 exit(-1);
 570         }
 571
 572         return ERROR_OK;
 573 }
 574
 575 static int etmv1_next_packet(etm_context_t *ctx, u8 *packet, int apo)
 576 {
 577         while (ctx->data_index < ctx->trace_depth)
 578         {
 579                 /* if the caller specified an address packet offset, skip until the
 580                  * we reach the n-th cycle marked with tracesync */
 581                 if (apo > 0)
 582                 {
 583                         if (ctx->trace_data[ctx->data_index].flags & ETMV1_TRACESYNC_CYCLE)
 584                                 apo--;
 585
 586                         if (apo > 0)
 587                         {
 588                                 ctx->data_index++;
 589                                 ctx->data_half = 0;
 590                         }
 591                         continue;
 592                 }
 593
 594                 /* no tracedata output during a TD cycle
 595                  * or in a trigger cycle */
 596                 if ((ctx->trace_data[ctx->data_index].pipestat == STAT_TD)
 597                         || (ctx->trace_data[ctx->data_index].flags & ETMV1_TRIGGER_CYCLE))
 598                 {
 599                         ctx->data_index++;
 600                         ctx->data_half = 0;
 601                         continue;
 602                 }
 603
 604                 if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_16BIT)
 605                 {
 606                         if (ctx->data_half == 0)
 607                         {
 608                                 *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
 609                                 ctx->data_half = 1;
 610                         }
 611                         else
 612                         {
 613                                 *packet = (ctx->trace_data[ctx->data_index].packet & 0xff00) >> 8;
 614                                 ctx->data_half = 0;
 615                                 ctx->data_index++;
 616                         }
 617                 }
 618                 else if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT)
 619                 {
 620                         *packet = ctx->trace_data[ctx->data_index].packet & 0xff;
 621                         ctx->data_index++;
 622                 }
 623                 else
 624                 {
 625                         /* on a 4-bit port, a packet will be output during two consecutive cycles */
 626                         if (ctx->data_index > (ctx->trace_depth - 2))
 627                                 return -1;
 628
 629                         *packet = ctx->trace_data[ctx->data_index].packet & 0xf;
 630                         *packet |= (ctx->trace_data[ctx->data_index + 1].packet & 0xf) << 4;
 631                         ctx->data_index += 2;
 632                 }
 633
 634                 return 0;
 635         }
 636
 637         return -1;
 638 }
 639
 640 static int etmv1_branch_address(etm_context_t *ctx)
 641 {
 642         int retval;
 643         u8 packet;
 644         int shift = 0;
 645         int apo;
 646         u32 i;
 647
 648         /* quit analysis if less than two cycles are left in the trace
 649          * because we can't extract the APO */
 650         if (ctx->data_index > (ctx->trace_depth - 2))
 651                 return -1;
 652
 653         /* a BE could be output during an APO cycle, skip the current
 654          * and continue with the new one */
 655         if (ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x4)
 656                 return 1;
 657         if (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x4)
 658                 return 2;
 659
 660         /* address packet offset encoded in the next two cycles' pipestat bits */
 661         apo = ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x3;
 662         apo |= (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x3) << 2;
 663
 664         /* count number of tracesync cycles between current pipe_index and data_index
 665          * i.e. the number of tracesyncs that data_index already passed by
 666          * to subtract them from the APO */
 667         for (i = ctx->pipe_index; i < ctx->data_index; i++)
 668         {
 669                 if (ctx->trace_data[ctx->pipe_index + 1].pipestat & ETMV1_TRACESYNC_CYCLE)
 670                         apo--;
 671         }
 672
 673         /* extract up to four 7-bit packets */
 674         do {
 675                 if ((retval = etmv1_next_packet(ctx, &packet, (shift == 0) ? apo + 1 : 0)) != 0)
 676                         return -1;
 677                 ctx->last_branch &= ~(0x7f << shift);
 678                 ctx->last_branch |= (packet & 0x7f) << shift;
 679                 shift += 7;
 680         } while ((packet & 0x80) && (shift < 28));
 681
 682         /* one last packet holding 4 bits of the address, plus the branch reason code */
 683         if ((shift == 28) && (packet & 0x80))
 684         {
 685                 if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
 686                         return -1;
 687                 ctx->last_branch &= 0x0fffffff;
 688                 ctx->last_branch |= (packet & 0x0f) << 28;
 689                 ctx->last_branch_reason = (packet & 0x70) >> 4;
 690                 shift += 4;
 691         }
 692         else
 693         {
 694                 ctx->last_branch_reason = 0;
 695         }
 696
 697         if (shift == 32)
 698         {
 699                 ctx->pc_ok = 1;
 700         }
 701
 702         /* if a full address was output, we might have branched into Jazelle state */
 703         if ((shift == 32) && (packet & 0x80))
 704         {
 705                 ctx->core_state = ARMV4_5_STATE_JAZELLE;
 706         }
 707         else
 708         {
 709                 /* if we didn't branch into Jazelle state, the current processor state is
 710                  * encoded in bit 0 of the branch target address */
 711                 if (ctx->last_branch & 0x1)
 712                 {
 713                         ctx->core_state = ARMV4_5_STATE_THUMB;
 714                         ctx->last_branch &= ~0x1;
 715                 }
 716                 else
 717                 {
 718                         ctx->core_state = ARMV4_5_STATE_ARM;
 719                         ctx->last_branch &= ~0x3;
 720                 }
 721         }
 722
 723         return 0;
 724 }
 725
 726 static int etmv1_data(etm_context_t *ctx, int size, u32 *data)
 727 {
 728         int j;
 729         u8 buf[4];
 730         int retval;
 731
 732         for (j = 0; j < size; j++)
 733         {
 734                 if ((retval = etmv1_next_packet(ctx, &buf[j], 0)) != 0)
 735                         return -1;
 736         }
 737
 738         if (size == 8)
 739         {
 740                 LOG_ERROR("TODO: add support for 64-bit values");
 741                 return -1;
 742         }
 743         else if (size == 4)
 744                 *data = target_buffer_get_u32(ctx->target, buf);
 745         else if (size == 2)
 746                 *data = target_buffer_get_u16(ctx->target, buf);
 747         else if (size == 1)
 748                 *data = buf[0];
 749         else
 750                 return -1;
 751
 752         return 0;
 753 }
 754
 755 static int etmv1_analyze_trace(etm_context_t *ctx, struct command_context_s *cmd_ctx)
 756 {
 757         int retval;
 758         arm_instruction_t instruction;
 759
 760         /* read the trace data if it wasn't read already */
 761         if (ctx->trace_depth == 0)
 762                 ctx->capture_driver->read_trace(ctx);
 763
 764         /* start at the beginning of the captured trace */
 765         ctx->pipe_index = 0;
 766         ctx->data_index = 0;
 767         ctx->data_half = 0;
 768
 769         /* neither the PC nor the data pointer are valid */
 770         ctx->pc_ok = 0;
 771         ctx->ptr_ok = 0;
 772
 773         while (ctx->pipe_index < ctx->trace_depth)
 774         {
 775                 u8 pipestat = ctx->trace_data[ctx->pipe_index].pipestat;
 776                 u32 next_pc = ctx->current_pc;
 777                 u32 old_data_index = ctx->data_index;
 778                 u32 old_data_half = ctx->data_half;
 779                 u32 old_index = ctx->pipe_index;
 780                 u32 last_instruction = ctx->last_instruction;
 781                 u32 cycles = 0;
 782                 int current_pc_ok = ctx->pc_ok;
 783
 784                 if (ctx->trace_data[ctx->pipe_index].flags & ETMV1_TRIGGER_CYCLE)
 785                 {
 786                         command_print(cmd_ctx, "--- trigger ---");
 787                 }
 788
 789                 /* instructions execute in IE/D or BE/D cycles */
 790                 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
 791                         ctx->last_instruction = ctx->pipe_index;
 792
 793                 /* if we don't have a valid pc skip until we reach an indirect branch */
 794                 if ((!ctx->pc_ok) && (pipestat != STAT_BE))
 795                 {
 796                         ctx->pipe_index++;
 797                         continue;
 798                 }
 799
 800                 /* any indirect branch could have interrupted instruction flow
 801                  * - the branch reason code could indicate a trace discontinuity
 802                  * - a branch to the exception vectors indicates an exception
 803                  */
 804                 if ((pipestat == STAT_BE) || (pipestat == STAT_BD))
 805                 {
 806                         /* backup current data index, to be able to consume the branch address
 807                          * before examining data address and values
 808                          */
 809                         old_data_index = ctx->data_index;
 810                         old_data_half = ctx->data_half;
 811
 812                         ctx->last_instruction = ctx->pipe_index;
 813
 814                         if ((retval = etmv1_branch_address(ctx)) != 0)
 815                         {
 816                                 /* negative return value from etmv1_branch_address means we ran out of packets,
 817                                  * quit analysing the trace */
 818                                 if (retval < 0)
 819                                         break;
 820
 821                                 /* a positive return values means the current branch was abandoned,
 822                                  * and a new branch was encountered in cycle ctx->pipe_index + retval;
 823                                  */
 824                                 LOG_WARNING("abandoned branch encountered, correctnes of analysis uncertain");
 825                                 ctx->pipe_index += retval;
 826                                 continue;
 827                         }
 828
 829                         /* skip over APO cycles */
 830                         ctx->pipe_index += 2;
 831
 832                         switch (ctx->last_branch_reason)
 833                         {
 834                                 case 0x0:       /* normal PC change */
 835                                         next_pc = ctx->last_branch;
 836                                         break;
 837                                 case 0x1:       /* tracing enabled */
 838                                         command_print(cmd_ctx, "--- tracing enabled at 0x%8.8x ---", ctx->last_branch);
 839                                         ctx->current_pc = ctx->last_branch;
 840                                         ctx->pipe_index++;
 841                                         continue;
 842                                         break;
 843                                 case 0x2:       /* trace restarted after FIFO overflow */
 844                                         command_print(cmd_ctx, "--- trace restarted after FIFO overflow at 0x%8.8x ---", ctx->last_branch);
 845                                         ctx->current_pc = ctx->last_branch;
 846                                         ctx->pipe_index++;
 847                                         continue;
 848                                         break;
 849                                 case 0x3:       /* exit from debug state */
 850                                         command_print(cmd_ctx, "--- exit from debug state at 0x%8.8x ---", ctx->last_branch);
 851                                         ctx->current_pc = ctx->last_branch;
 852                                         ctx->pipe_index++;
 853                                         continue;
 854                                         break;
 855                                 case 0x4:       /* periodic synchronization point */
 856                                         next_pc = ctx->last_branch;
 857                                         /* if we had no valid PC prior to this synchronization point,
 858                                          * we have to move on with the next trace cycle
 859                                          */
 860                                         if (!current_pc_ok)
 861                                         {
 862                                                 command_print(cmd_ctx, "--- periodic synchronization point at 0x%8.8x ---", next_pc);
 863                                                 ctx->current_pc = next_pc;
 864                                                 ctx->pipe_index++;
 865                                                 continue;
 866                                         }
 867                                         break;
 868                                 default:        /* reserved */
 869                                         LOG_ERROR("BUG: branch reason code 0x%x is reserved", ctx->last_branch_reason);
 870                                         exit(-1);
 871                                         break;
 872                         }
 873
 874                         /* if we got here the branch was a normal PC change
 875                          * (or a periodic synchronization point, which means the same for that matter)
 876                          * if we didn't accquire a complete PC continue with the next cycle
 877                          */
 878                         if (!ctx->pc_ok)
 879                                 continue;
 880
 881                         /* indirect branch to the exception vector means an exception occured */
 882                         if ((ctx->last_branch <= 0x20)
 883                                 || ((ctx->last_branch >= 0xffff0000) && (ctx->last_branch <= 0xffff0020)))
 884                         {
 885                                 if ((ctx->last_branch & 0xff) == 0x10)
 886                                 {
 887                                         command_print(cmd_ctx, "data abort");
 888                                 }
 889                                 else
 890                                 {
 891                                         command_print(cmd_ctx, "exception vector 0x%2.2x", ctx->last_branch);
 892                                         ctx->current_pc = ctx->last_branch;
 893                                         ctx->pipe_index++;
 894                                         continue;
 895                                 }
 896                         }
 897                 }
 898
 899                 /* an instruction was executed (or not, depending on the condition flags)
 900                  * retrieve it from the image for displaying */
 901                 if (ctx->pc_ok && (pipestat != STAT_WT) && (pipestat != STAT_TD) &&
 902                         !(((pipestat == STAT_BE) || (pipestat == STAT_BD)) &&
 903                                 ((ctx->last_branch_reason != 0x0) && (ctx->last_branch_reason != 0x4))))
 904                 {
 905                         if ((retval = etm_read_instruction(ctx, &instruction)) != ERROR_OK)
 906                         {
 907                                 /* can't continue tracing with no image available */
 908                                 if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
 909                                 {
 910                                         return retval;
 911                                 }
 912                                 else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
 913                                 {
 914                                         /* TODO: handle incomplete images
 915                                          * for now we just quit the analsysis*/
 916                                         return retval;
 917                                 }
 918                         }
 919
 920                         cycles = old_index - last_instruction;
 921                 }
 922
 923                 if ((pipestat == STAT_ID) || (pipestat == STAT_BD))
 924                 {
 925                         u32 new_data_index = ctx->data_index;
 926                         u32 new_data_half = ctx->data_half;
 927
 928                         /* in case of a branch with data, the branch target address was consumed before
 929                          * we temporarily go back to the saved data index */
 930                         if (pipestat == STAT_BD)
 931                         {
 932                                 ctx->data_index = old_data_index;
 933                                 ctx->data_half = old_data_half;
 934                         }
 935
 936                         if (ctx->tracemode & ETMV1_TRACE_ADDR)
 937                         {
 938                                 u8 packet;
 939                                 int shift = 0;
 940
 941                                 do {
 942                                         if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0)
 943                                                 return ERROR_ETM_ANALYSIS_FAILED;
 944                                         ctx->last_ptr &= ~(0x7f << shift);
 945                                         ctx->last_ptr |= (packet & 0x7f) << shift;
 946                                         shift += 7;
 947                                 } while ((packet & 0x80) && (shift < 32));
 948
 949                                 if (shift >= 32)
 950                                         ctx->ptr_ok = 1;
 951
 952                                 if (ctx->ptr_ok)
 953                                 {
 954                                         command_print(cmd_ctx, "address: 0x%8.8x", ctx->last_ptr);
 955                                 }
 956                         }
 957
 958                         if (ctx->tracemode & ETMV1_TRACE_DATA)
 959                         {
 960                                 if ((instruction.type == ARM_LDM) || (instruction.type == ARM_STM))
 961                                 {
 962                                         int i;
 963                                         for (i = 0; i < 16; i++)
 964                                         {
 965                                                 if (instruction.info.load_store_multiple.register_list & (1 << i))
 966                                                 {
 967                                                         u32 data;
 968                                                         if (etmv1_data(ctx, 4, &data) != 0)
 969                                                                 return ERROR_ETM_ANALYSIS_FAILED;
 970                                                         command_print(cmd_ctx, "data: 0x%8.8x", data);
 971                                                 }
 972                                         }
 973                                 }
 974                                 else if ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_STRH))
 975                                 {
 976                                         u32 data;
 977                                         if (etmv1_data(ctx, arm_access_size(&instruction), &data) != 0)
 978                                                 return ERROR_ETM_ANALYSIS_FAILED;
 979                                         command_print(cmd_ctx, "data: 0x%8.8x", data);
 980                                 }
 981                         }
 982
 983                         /* restore data index after consuming BD address and data */
 984                         if (pipestat == STAT_BD)
 985                         {
 986                                 ctx->data_index = new_data_index;
 987                                 ctx->data_half = new_data_half;
 988                         }
 989                 }
 990
 991                 /* adjust PC */
 992                 if ((pipestat == STAT_IE) || (pipestat == STAT_ID))
 993                 {
 994                         if (((instruction.type == ARM_B) ||
 995                              (instruction.type == ARM_BL) ||
 996                              (instruction.type == ARM_BLX)) &&
 997                             (instruction.info.b_bl_bx_blx.target_address != 0xffffffff))
 998                         {
 999                                 next_pc = instruction.info.b_bl_bx_blx.target_address;
1000                         }
1001                         else
1002                         {
1003                                 next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
1004                         }
1005                 }
1006                 else if (pipestat == STAT_IN)
1007                 {
1008                         next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
1009                 }
1010
1011                 if ((pipestat != STAT_TD) && (pipestat != STAT_WT))
1012                 {
1013                         char cycles_text[32] = "";
1014
1015                         /* if the trace was captured with cycle accurate tracing enabled,
1016                          * output the number of cycles since the last executed instruction
1017                          */
1018                         if (ctx->tracemode & ETMV1_CYCLE_ACCURATE)
1019                         {
1020                                 snprintf(cycles_text, 32, " (%i %s)",
1021                                         cycles,
1022                                         (cycles == 1) ? "cycle" : "cycles");
1023                         }
1024
1025                         command_print(cmd_ctx, "%s%s%s",
1026                                 instruction.text,
1027                                 (pipestat == STAT_IN) ? " (not executed)" : "",
1028                                 cycles_text);
1029
1030                         ctx->current_pc = next_pc;
1031
1032                         /* packets for an instruction don't start on or before the preceding
1033                          * functional pipestat (i.e. other than WT or TD)
1034                          */
1035                         if (ctx->data_index <= ctx->pipe_index)
1036                         {
1037                                 ctx->data_index = ctx->pipe_index + 1;
1038                                 ctx->data_half = 0;
1039                         }
1040                 }
1041
1042                 ctx->pipe_index += 1;
1043         }
1044
1045         return ERROR_OK;
1046 }
1047
1048 static int handle_etm_tracemode_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1049 {
1050         target_t *target;
1051         armv4_5_common_t *armv4_5;
1052         arm7_9_common_t *arm7_9;
1053         etmv1_tracemode_t tracemode;
1054
1055         target = get_current_target(cmd_ctx);
1056
1057         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1058         {
1059                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1060                 return ERROR_OK;
1061         }
1062
1063         if (!arm7_9->etm_ctx)
1064         {
1065                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1066                 return ERROR_OK;
1067         }
1068
1069         tracemode = arm7_9->etm_ctx->tracemode;
1070
1071         if (argc == 4)
1072         {
1073                 if (strcmp(args[0], "none") == 0)
1074                 {
1075                         tracemode = ETMV1_TRACE_NONE;
1076                 }
1077                 else if (strcmp(args[0], "data") == 0)
1078                 {
1079                         tracemode = ETMV1_TRACE_DATA;
1080                 }
1081                 else if (strcmp(args[0], "address") == 0)
1082                 {
1083                         tracemode = ETMV1_TRACE_ADDR;
1084                 }
1085                 else if (strcmp(args[0], "all") == 0)
1086                 {
1087                         tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR;
1088                 }
1089                 else
1090                 {
1091                         command_print(cmd_ctx, "invalid option '%s'", args[0]);
1092                         return ERROR_OK;
1093                 }
1094
1095                 switch (strtol(args[1], NULL, 0))
1096                 {
1097                         case 0:
1098                                 tracemode |= ETMV1_CONTEXTID_NONE;
1099                                 break;
1100                         case 8:
1101                                 tracemode |= ETMV1_CONTEXTID_8;
1102                                 break;
1103                         case 16:
1104                                 tracemode |= ETMV1_CONTEXTID_16;
1105                                 break;
1106                         case 32:
1107                                 tracemode |= ETMV1_CONTEXTID_32;
1108                                 break;
1109                         default:
1110                                 command_print(cmd_ctx, "invalid option '%s'", args[1]);
1111                                 return ERROR_OK;
1112                 }
1113
1114                 if (strcmp(args[2], "enable") == 0)
1115                 {
1116                         tracemode |= ETMV1_CYCLE_ACCURATE;
1117                 }
1118                 else if (strcmp(args[2], "disable") == 0)
1119                 {
1120                         tracemode |= 0;
1121                 }
1122                 else
1123                 {
1124                         command_print(cmd_ctx, "invalid option '%s'", args[2]);
1125                         return ERROR_OK;
1126                 }
1127
1128                 if (strcmp(args[3], "enable") == 0)
1129                 {
1130                         tracemode |= ETMV1_BRANCH_OUTPUT;
1131                 }
1132                 else if (strcmp(args[3], "disable") == 0)
1133                 {
1134                         tracemode |= 0;
1135                 }
1136                 else
1137                 {
1138                         command_print(cmd_ctx, "invalid option '%s'", args[2]);
1139                         return ERROR_OK;
1140                 }
1141         }
1142         else if (argc != 0)
1143         {
1144                 command_print(cmd_ctx, "usage: configure trace mode <none|data|address|all> <context id bits> <cycle accurate> <branch output>");
1145                 return ERROR_OK;
1146         }
1147
1148         command_print(cmd_ctx, "current tracemode configuration:");
1149
1150         switch (tracemode & ETMV1_TRACE_MASK)
1151         {
1152                 case ETMV1_TRACE_NONE:
1153                         command_print(cmd_ctx, "data tracing: none");
1154                         break;
1155                 case ETMV1_TRACE_DATA:
1156                         command_print(cmd_ctx, "data tracing: data only");
1157                         break;
1158                 case ETMV1_TRACE_ADDR:
1159                         command_print(cmd_ctx, "data tracing: address only");
1160                         break;
1161                 case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR:
1162                         command_print(cmd_ctx, "data tracing: address and data");
1163                         break;
1164         }
1165
1166         switch (tracemode & ETMV1_CONTEXTID_MASK)
1167         {
1168                 case ETMV1_CONTEXTID_NONE:
1169                         command_print(cmd_ctx, "contextid tracing: none");
1170                         break;
1171                 case ETMV1_CONTEXTID_8:
1172                         command_print(cmd_ctx, "contextid tracing: 8 bit");
1173                         break;
1174                 case ETMV1_CONTEXTID_16:
1175                         command_print(cmd_ctx, "contextid tracing: 16 bit");
1176                         break;
1177                 case ETMV1_CONTEXTID_32:
1178                         command_print(cmd_ctx, "contextid tracing: 32 bit");
1179                         break;
1180         }
1181
1182         if (tracemode & ETMV1_CYCLE_ACCURATE)
1183         {
1184                 command_print(cmd_ctx, "cycle-accurate tracing enabled");
1185         }
1186         else
1187         {
1188                 command_print(cmd_ctx, "cycle-accurate tracing disabled");
1189         }
1190
1191         if (tracemode & ETMV1_BRANCH_OUTPUT)
1192         {
1193                 command_print(cmd_ctx, "full branch address output enabled");
1194         }
1195         else
1196         {
1197                 command_print(cmd_ctx, "full branch address output disabled");
1198         }
1199
1200         /* only update ETM_CTRL register if tracemode changed */
1201         if (arm7_9->etm_ctx->tracemode != tracemode)
1202         {
1203                 reg_t *etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL];
1204
1205                 etm_get_reg(etm_ctrl_reg);
1206
1207                 buf_set_u32(etm_ctrl_reg->value, 2, 2, tracemode & ETMV1_TRACE_MASK);
1208                 buf_set_u32(etm_ctrl_reg->value, 14, 2, (tracemode & ETMV1_CONTEXTID_MASK) >> 4);
1209                 buf_set_u32(etm_ctrl_reg->value, 12, 1, (tracemode & ETMV1_CYCLE_ACCURATE) >> 8);
1210                 buf_set_u32(etm_ctrl_reg->value, 8, 1, (tracemode & ETMV1_BRANCH_OUTPUT) >> 9);
1211                 etm_store_reg(etm_ctrl_reg);
1212
1213                 arm7_9->etm_ctx->tracemode = tracemode;
1214
1215                 /* invalidate old trace data */
1216                 arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1217                 if (arm7_9->etm_ctx->trace_depth > 0)
1218                 {
1219                         free(arm7_9->etm_ctx->trace_data);
1220                         arm7_9->etm_ctx->trace_data = NULL;
1221                 }
1222                 arm7_9->etm_ctx->trace_depth = 0;
1223         }
1224
1225         return ERROR_OK;
1226 }
1227
1228 static int handle_etm_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1229 {
1230         target_t *target;
1231         armv4_5_common_t *armv4_5;
1232         arm7_9_common_t *arm7_9;
1233         etm_portmode_t portmode = 0x0;
1234         etm_context_t *etm_ctx = malloc(sizeof(etm_context_t));
1235         int i;
1236
1237         if (argc != 5)
1238         {
1239                 return ERROR_COMMAND_SYNTAX_ERROR;
1240         }
1241
1242         target = get_target_by_num(strtoul(args[0], NULL, 0));
1243
1244         if (!target)
1245         {
1246                 LOG_ERROR("target number '%s' not defined", args[0]);
1247                 return ERROR_FAIL;
1248         }
1249
1250         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1251         {
1252                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1253                 return ERROR_FAIL;
1254         }
1255
1256         switch (strtoul(args[1], NULL, 0))
1257         {
1258                 case 4:
1259                         portmode |= ETM_PORT_4BIT;
1260                         break;
1261                 case 8:
1262                         portmode |= ETM_PORT_8BIT;
1263                         break;
1264                 case 16:
1265                         portmode |= ETM_PORT_16BIT;
1266                         break;
1267                 default:
1268                         command_print(cmd_ctx, "unsupported ETM port width '%s', must be 4, 8 or 16", args[1]);
1269                         return ERROR_FAIL;
1270         }
1271
1272         if (strcmp("normal", args[2]) == 0)
1273         {
1274                 portmode |= ETM_PORT_NORMAL;
1275         }
1276         else if (strcmp("multiplexed", args[2]) == 0)
1277         {
1278                 portmode |= ETM_PORT_MUXED;
1279         }
1280         else if (strcmp("demultiplexed", args[2]) == 0)
1281         {
1282                 portmode |= ETM_PORT_DEMUXED;
1283         }
1284         else
1285         {
1286                 command_print(cmd_ctx, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args[2]);
1287                 return ERROR_FAIL;
1288         }
1289
1290         if (strcmp("half", args[3]) == 0)
1291         {
1292                 portmode |= ETM_PORT_HALF_CLOCK;
1293         }
1294         else if (strcmp("full", args[3]) == 0)
1295         {
1296                 portmode |= ETM_PORT_FULL_CLOCK;
1297         }
1298         else
1299         {
1300                 command_print(cmd_ctx, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args[3]);
1301                 return ERROR_FAIL;
1302         }
1303
1304         for (i=0; etm_capture_drivers[i]; i++)
1305         {
1306                 if (strcmp(args[4], etm_capture_drivers[i]->name) == 0)
1307                 {
1308                         int retval;
1309                         if ((retval=etm_capture_drivers[i]->register_commands(cmd_ctx)) != ERROR_OK)
1310                         {
1311                                 free(etm_ctx);
1312                                 return retval;
1313                         }
1314
1315                         etm_ctx->capture_driver = etm_capture_drivers[i];
1316
1317                         break;
1318                 }
1319         }
1320
1321         if (!etm_capture_drivers[i])
1322         {
1323                 /* no supported capture driver found, don't register an ETM */
1324                 free(etm_ctx);
1325                 LOG_ERROR("trace capture driver '%s' not found", args[4]);
1326                 return ERROR_FAIL;
1327         }
1328
1329         etm_ctx->target = target;
1330         etm_ctx->trigger_percent = 50;
1331         etm_ctx->trace_data = NULL;
1332         etm_ctx->trace_depth = 0;
1333         etm_ctx->portmode = portmode;
1334         etm_ctx->tracemode = 0x0;
1335         etm_ctx->core_state = ARMV4_5_STATE_ARM;
1336         etm_ctx->image = NULL;
1337         etm_ctx->pipe_index = 0;
1338         etm_ctx->data_index = 0;
1339         etm_ctx->current_pc = 0x0;
1340         etm_ctx->pc_ok = 0;
1341         etm_ctx->last_branch = 0x0;
1342         etm_ctx->last_branch_reason = 0x0;
1343         etm_ctx->last_ptr = 0x0;
1344         etm_ctx->ptr_ok = 0x0;
1345         etm_ctx->context_id = 0x0;
1346         etm_ctx->last_instruction = 0;
1347
1348         arm7_9->etm_ctx = etm_ctx;
1349
1350         return etm_register_user_commands(cmd_ctx);
1351 }
1352
1353 int handle_etm_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1354 {
1355         target_t *target;
1356         armv4_5_common_t *armv4_5;
1357         arm7_9_common_t *arm7_9;
1358         reg_t *etm_config_reg;
1359         reg_t *etm_sys_config_reg;
1360
1361         int max_port_size;
1362
1363         target = get_current_target(cmd_ctx);
1364
1365         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1366         {
1367                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1368                 return ERROR_OK;
1369         }
1370
1371         if (!arm7_9->etm_ctx)
1372         {
1373                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1374                 return ERROR_OK;
1375         }
1376
1377         etm_config_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CONFIG];
1378         etm_sys_config_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_SYS_CONFIG];
1379
1380         etm_get_reg(etm_config_reg);
1381         command_print(cmd_ctx, "pairs of address comparators: %i", buf_get_u32(etm_config_reg->value, 0, 4));
1382         command_print(cmd_ctx, "pairs of data comparators: %i", buf_get_u32(etm_config_reg->value, 4, 4));
1383         command_print(cmd_ctx, "memory map decoders: %i", buf_get_u32(etm_config_reg->value, 8, 5));
1384         command_print(cmd_ctx, "number of counters: %i", buf_get_u32(etm_config_reg->value, 13, 3));
1385         command_print(cmd_ctx, "sequencer %spresent",
1386                         (buf_get_u32(etm_config_reg->value, 16, 1) == 1) ? "" : "not ");
1387         command_print(cmd_ctx, "number of ext. inputs: %i", buf_get_u32(etm_config_reg->value, 17, 3));
1388         command_print(cmd_ctx, "number of ext. outputs: %i", buf_get_u32(etm_config_reg->value, 20, 3));
1389         command_print(cmd_ctx, "FIFO full %spresent",
1390                         (buf_get_u32(etm_config_reg->value, 23, 1) == 1) ? "" : "not ");
1391         command_print(cmd_ctx, "protocol version: %i", buf_get_u32(etm_config_reg->value, 28, 3));
1392
1393         etm_get_reg(etm_sys_config_reg);
1394
1395         switch (buf_get_u32(etm_sys_config_reg->value, 0, 3))
1396         {
1397                 case 0:
1398                         max_port_size = 4;
1399                         break;
1400                 case 1:
1401                         max_port_size = 8;
1402                         break;
1403                 case 2:
1404                         max_port_size = 16;
1405                         break;
1406                 default:
1407                         LOG_ERROR("Illegal max_port_size");
1408                         exit(-1);
1409         }
1410         command_print(cmd_ctx, "max. port size: %i", max_port_size);
1411
1412         command_print(cmd_ctx, "half-rate clocking %ssupported",
1413                         (buf_get_u32(etm_sys_config_reg->value, 3, 1) == 1) ? "" : "not ");
1414         command_print(cmd_ctx, "full-rate clocking %ssupported",
1415                         (buf_get_u32(etm_sys_config_reg->value, 4, 1) == 1) ? "" : "not ");
1416         command_print(cmd_ctx, "normal trace format %ssupported",
1417                         (buf_get_u32(etm_sys_config_reg->value, 5, 1) == 1) ? "" : "not ");
1418         command_print(cmd_ctx, "multiplex trace format %ssupported",
1419                         (buf_get_u32(etm_sys_config_reg->value, 6, 1) == 1) ? "" : "not ");
1420         command_print(cmd_ctx, "demultiplex trace format %ssupported",
1421                         (buf_get_u32(etm_sys_config_reg->value, 7, 1) == 1) ? "" : "not ");
1422         command_print(cmd_ctx, "FIFO full %ssupported",
1423                         (buf_get_u32(etm_sys_config_reg->value, 8, 1) == 1) ? "" : "not ");
1424
1425         return ERROR_OK;
1426 }
1427
1428 static int handle_etm_status_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1429 {
1430         target_t *target;
1431         armv4_5_common_t *armv4_5;
1432         arm7_9_common_t *arm7_9;
1433         trace_status_t trace_status;
1434
1435         target = get_current_target(cmd_ctx);
1436
1437         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1438         {
1439                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1440                 return ERROR_OK;
1441         }
1442
1443         if (!arm7_9->etm_ctx)
1444         {
1445                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1446                 return ERROR_OK;
1447         }
1448
1449         trace_status = arm7_9->etm_ctx->capture_driver->status(arm7_9->etm_ctx);
1450
1451         if (trace_status == TRACE_IDLE)
1452         {
1453                 command_print(cmd_ctx, "tracing is idle");
1454         }
1455         else
1456         {
1457                 static char *completed = " completed";
1458                 static char *running = " is running";
1459                 static char *overflowed = ", trace overflowed";
1460                 static char *triggered = ", trace triggered";
1461
1462                 command_print(cmd_ctx, "trace collection%s%s%s",
1463                         (trace_status & TRACE_RUNNING) ? running : completed,
1464                         (trace_status & TRACE_OVERFLOWED) ? overflowed : "",
1465                         (trace_status & TRACE_TRIGGERED) ? triggered : "");
1466
1467                 if (arm7_9->etm_ctx->trace_depth > 0)
1468                 {
1469                         command_print(cmd_ctx, "%i frames of trace data read", arm7_9->etm_ctx->trace_depth);
1470                 }
1471         }
1472
1473         return ERROR_OK;
1474 }
1475
1476 static int handle_etm_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1477 {
1478         target_t *target;
1479         armv4_5_common_t *armv4_5;
1480         arm7_9_common_t *arm7_9;
1481         etm_context_t *etm_ctx;
1482
1483         if (argc < 1)
1484         {
1485                 command_print(cmd_ctx, "usage: etm image <file> [base address] [type]");
1486                 return ERROR_OK;
1487         }
1488
1489         target = get_current_target(cmd_ctx);
1490
1491         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1492         {
1493                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1494                 return ERROR_OK;
1495         }
1496
1497         if (!(etm_ctx = arm7_9->etm_ctx))
1498         {
1499                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1500                 return ERROR_OK;
1501         }
1502
1503         if (etm_ctx->image)
1504         {
1505                 image_close(etm_ctx->image);
1506                 free(etm_ctx->image);
1507                 command_print(cmd_ctx, "previously loaded image found and closed");
1508         }
1509
1510         etm_ctx->image = malloc(sizeof(image_t));
1511         etm_ctx->image->base_address_set = 0;
1512         etm_ctx->image->start_address_set = 0;
1513
1514         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1515         if (argc >= 2)
1516         {
1517                 etm_ctx->image->base_address_set = 1;
1518                 etm_ctx->image->base_address = strtoul(args[1], NULL, 0);
1519         }
1520         else
1521         {
1522                 etm_ctx->image->base_address_set = 0;
1523         }
1524
1525         if (image_open(etm_ctx->image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1526         {
1527                 free(etm_ctx->image);
1528                 etm_ctx->image = NULL;
1529                 return ERROR_OK;
1530         }
1531
1532         return ERROR_OK;
1533 }
1534
1535 static int handle_etm_dump_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1536 {
1537         fileio_t file;
1538         target_t *target;
1539         armv4_5_common_t *armv4_5;
1540         arm7_9_common_t *arm7_9;
1541         etm_context_t *etm_ctx;
1542         u32 i;
1543
1544         if (argc != 1)
1545         {
1546                 command_print(cmd_ctx, "usage: etm dump <file>");
1547                 return ERROR_OK;
1548         }
1549
1550         target = get_current_target(cmd_ctx);
1551
1552         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1553         {
1554                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1555                 return ERROR_OK;
1556         }
1557
1558         if (!(etm_ctx = arm7_9->etm_ctx))
1559         {
1560                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1561                 return ERROR_OK;
1562         }
1563
1564         if (etm_ctx->capture_driver->status == TRACE_IDLE)
1565         {
1566                 command_print(cmd_ctx, "trace capture wasn't enabled, no trace data captured");
1567                 return ERROR_OK;
1568         }
1569
1570         if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1571         {
1572                 /* TODO: if on-the-fly capture is to be supported, this needs to be changed */
1573                 command_print(cmd_ctx, "trace capture not completed");
1574                 return ERROR_OK;
1575         }
1576
1577         /* read the trace data if it wasn't read already */
1578         if (etm_ctx->trace_depth == 0)
1579                 etm_ctx->capture_driver->read_trace(etm_ctx);
1580
1581         if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1582         {
1583                 return ERROR_OK;
1584         }
1585
1586         fileio_write_u32(&file, etm_ctx->capture_status);
1587         fileio_write_u32(&file, etm_ctx->portmode);
1588         fileio_write_u32(&file, etm_ctx->tracemode);
1589         fileio_write_u32(&file, etm_ctx->trace_depth);
1590
1591         for (i = 0; i < etm_ctx->trace_depth; i++)
1592         {
1593                 fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat);
1594                 fileio_write_u32(&file, etm_ctx->trace_data[i].packet);
1595                 fileio_write_u32(&file, etm_ctx->trace_data[i].flags);
1596         }
1597
1598         fileio_close(&file);
1599
1600         return ERROR_OK;
1601 }
1602
1603 static int handle_etm_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1604 {
1605         fileio_t file;
1606         target_t *target;
1607         armv4_5_common_t *armv4_5;
1608         arm7_9_common_t *arm7_9;
1609         etm_context_t *etm_ctx;
1610         u32 i;
1611
1612         if (argc != 1)
1613         {
1614                 command_print(cmd_ctx, "usage: etm load <file>");
1615                 return ERROR_OK;
1616         }
1617
1618         target = get_current_target(cmd_ctx);
1619
1620         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1621         {
1622                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1623                 return ERROR_OK;
1624         }
1625
1626         if (!(etm_ctx = arm7_9->etm_ctx))
1627         {
1628                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1629                 return ERROR_OK;
1630         }
1631
1632         if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
1633         {
1634                 command_print(cmd_ctx, "trace capture running, stop first");
1635                 return ERROR_OK;
1636         }
1637
1638         if (fileio_open(&file, args[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
1639         {
1640                 return ERROR_OK;
1641         }
1642
1643         if (file.size % 4)
1644         {
1645                 command_print(cmd_ctx, "size isn't a multiple of 4, no valid trace data");
1646                 fileio_close(&file);
1647                 return ERROR_OK;
1648         }
1649
1650         if (etm_ctx->trace_depth > 0)
1651         {
1652                 free(etm_ctx->trace_data);
1653                 etm_ctx->trace_data = NULL;
1654         }
1655
1656         fileio_read_u32(&file, &etm_ctx->capture_status);
1657         fileio_read_u32(&file, &etm_ctx->portmode);
1658         fileio_read_u32(&file, &etm_ctx->tracemode);
1659         fileio_read_u32(&file, &etm_ctx->trace_depth);
1660
1661         etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth);
1662         if(etm_ctx->trace_data == NULL)
1663         {
1664                 command_print(cmd_ctx, "not enough memory to perform operation");
1665                 fileio_close(&file);
1666                 return ERROR_OK;
1667         }
1668
1669         for (i = 0; i < etm_ctx->trace_depth; i++)
1670         {
1671                 u32 pipestat, packet, flags;
1672                 fileio_read_u32(&file, &pipestat);
1673                 fileio_read_u32(&file, &packet);
1674                 fileio_read_u32(&file, &flags);
1675                 etm_ctx->trace_data[i].pipestat = pipestat & 0xff;
1676                 etm_ctx->trace_data[i].packet = packet & 0xffff;
1677                 etm_ctx->trace_data[i].flags = flags;
1678         }
1679
1680         fileio_close(&file);
1681
1682         return ERROR_OK;
1683 }
1684
1685 static int handle_etm_trigger_percent_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1686 {
1687         target_t *target;
1688         armv4_5_common_t *armv4_5;
1689         arm7_9_common_t *arm7_9;
1690         etm_context_t *etm_ctx;
1691
1692         target = get_current_target(cmd_ctx);
1693
1694         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1695         {
1696                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1697                 return ERROR_OK;
1698         }
1699
1700         if (!(etm_ctx = arm7_9->etm_ctx))
1701         {
1702                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1703                 return ERROR_OK;
1704         }
1705
1706         if (argc > 0)
1707         {
1708                 u32 new_value = strtoul(args[0], NULL, 0);
1709
1710                 if ((new_value < 2) || (new_value > 100))
1711                 {
1712                         command_print(cmd_ctx, "valid settings are 2% to 100%");
1713                 }
1714                 else
1715                 {
1716                         etm_ctx->trigger_percent = new_value;
1717                 }
1718         }
1719
1720         command_print(cmd_ctx, "%i percent of the tracebuffer reserved for after the trigger", etm_ctx->trigger_percent);
1721
1722         return ERROR_OK;
1723 }
1724
1725 static int handle_etm_start_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1726 {
1727         target_t *target;
1728         armv4_5_common_t *armv4_5;
1729         arm7_9_common_t *arm7_9;
1730         etm_context_t *etm_ctx;
1731         reg_t *etm_ctrl_reg;
1732
1733         target = get_current_target(cmd_ctx);
1734
1735         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1736         {
1737                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1738                 return ERROR_OK;
1739         }
1740
1741         if (!(etm_ctx = arm7_9->etm_ctx))
1742         {
1743                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1744                 return ERROR_OK;
1745         }
1746
1747         /* invalidate old tracing data */
1748         arm7_9->etm_ctx->capture_status = TRACE_IDLE;
1749         if (arm7_9->etm_ctx->trace_depth > 0)
1750         {
1751                 free(arm7_9->etm_ctx->trace_data);
1752                 arm7_9->etm_ctx->trace_data = NULL;
1753         }
1754         arm7_9->etm_ctx->trace_depth = 0;
1755
1756         etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL];
1757         etm_get_reg(etm_ctrl_reg);
1758
1759         /* Clear programming bit (10), set port selection bit (11) */
1760         buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2);
1761
1762         etm_store_reg(etm_ctrl_reg);
1763         jtag_execute_queue();
1764
1765         etm_ctx->capture_driver->start_capture(etm_ctx);
1766
1767         return ERROR_OK;
1768 }
1769
1770 static int handle_etm_stop_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1771 {
1772         target_t *target;
1773         armv4_5_common_t *armv4_5;
1774         arm7_9_common_t *arm7_9;
1775         etm_context_t *etm_ctx;
1776         reg_t *etm_ctrl_reg;
1777
1778         target = get_current_target(cmd_ctx);
1779
1780         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1781         {
1782                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1783                 return ERROR_OK;
1784         }
1785
1786         if (!(etm_ctx = arm7_9->etm_ctx))
1787         {
1788                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1789                 return ERROR_OK;
1790         }
1791
1792         etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL];
1793         etm_get_reg(etm_ctrl_reg);
1794
1795         /* Set programming bit (10), clear port selection bit (11) */
1796         buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1);
1797
1798         etm_store_reg(etm_ctrl_reg);
1799         jtag_execute_queue();
1800
1801         etm_ctx->capture_driver->stop_capture(etm_ctx);
1802
1803         return ERROR_OK;
1804 }
1805
1806 static int handle_etm_analyze_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1807 {
1808         target_t *target;
1809         armv4_5_common_t *armv4_5;
1810         arm7_9_common_t *arm7_9;
1811         etm_context_t *etm_ctx;
1812         int retval;
1813
1814         target = get_current_target(cmd_ctx);
1815
1816         if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
1817         {
1818                 command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
1819                 return ERROR_OK;
1820         }
1821
1822         if (!(etm_ctx = arm7_9->etm_ctx))
1823         {
1824                 command_print(cmd_ctx, "current target doesn't have an ETM configured");
1825                 return ERROR_OK;
1826         }
1827
1828         if ((retval = etmv1_analyze_trace(etm_ctx, cmd_ctx)) != ERROR_OK)
1829         {
1830                 switch(retval)
1831                 {
1832                         case ERROR_ETM_ANALYSIS_FAILED:
1833                                 command_print(cmd_ctx, "further analysis failed (corrupted trace data or just end of data");
1834                                 break;
1835                         case ERROR_TRACE_INSTRUCTION_UNAVAILABLE:
1836                                 command_print(cmd_ctx, "no instruction for current address available, analysis aborted");
1837                                 break;
1838                         case ERROR_TRACE_IMAGE_UNAVAILABLE:
1839                                 command_print(cmd_ctx, "no image available for trace analysis");
1840                                 break;
1841                         default:
1842                                 command_print(cmd_ctx, "unknown error: %i", retval);
1843                 }
1844         }
1845
1846         return ERROR_OK;
1847 }
1848
1849 int etm_register_commands(struct command_context_s *cmd_ctx)
1850 {
1851         etm_cmd = register_command(cmd_ctx, NULL, "etm", NULL, COMMAND_ANY, "Embedded Trace Macrocell");
1852
1853         register_command(cmd_ctx, etm_cmd, "config", handle_etm_config_command, COMMAND_CONFIG, "etm config <target> <port_width> <port_mode> <clocking> <capture_driver>");
1854
1855         return ERROR_OK;
1856 }
1857
1858 int etm_register_user_commands(struct command_context_s *cmd_ctx)
1859 {
1860         register_command(cmd_ctx, etm_cmd, "tracemode", handle_etm_tracemode_command,
1861                 COMMAND_EXEC, "configure trace mode <none|data|address|all> <context id bits> <cycle accurate> <branch output");
1862
1863         register_command(cmd_ctx, etm_cmd, "info", handle_etm_info_command,
1864                 COMMAND_EXEC, "display info about the current target's ETM");
1865
1866         register_command(cmd_ctx, etm_cmd, "trigger_percent <percent>", handle_etm_trigger_percent_command,
1867                 COMMAND_EXEC, "amount (<percent>) of trace buffer to be filled after the trigger occured");
1868         register_command(cmd_ctx, etm_cmd, "status", handle_etm_status_command,
1869                 COMMAND_EXEC, "display current target's ETM status");
1870         register_command(cmd_ctx, etm_cmd, "start", handle_etm_start_command,
1871                 COMMAND_EXEC, "start ETM trace collection");
1872         register_command(cmd_ctx, etm_cmd, "stop", handle_etm_stop_command,
1873                 COMMAND_EXEC, "stop ETM trace collection");
1874
1875         register_command(cmd_ctx, etm_cmd, "analyze", handle_etm_analyze_command,
1876                 COMMAND_EXEC, "anaylze collected ETM trace");
1877
1878         register_command(cmd_ctx, etm_cmd, "image", handle_etm_image_command,
1879                 COMMAND_EXEC, "load image from <file> [base address]");
1880
1881         register_command(cmd_ctx, etm_cmd, "dump", handle_etm_dump_command,
1882                 COMMAND_EXEC, "dump captured trace data <file>");
1883         register_command(cmd_ctx, etm_cmd, "load", handle_etm_load_command,
1884                 COMMAND_EXEC, "load trace data for analysis <file>");
1885
1886         return ERROR_OK;
1887 }