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openocd/src/target/target.c

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "config.h"
#include "target.h"
#include "log.h"
#include "configuration.h"
#include "binarybuffer.h"
#include "jtag.h"
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <time.h>
#include <time_support.h>
int cli_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv);
int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_load_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_dump_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
/* targets
*/
extern target_type_t arm7tdmi_target;
extern target_type_t arm720t_target;
extern target_type_t arm9tdmi_target;
extern target_type_t arm920t_target;
target_type_t *target_types[] =
{
&arm7tdmi_target,
&arm9tdmi_target,
&arm920t_target,
&arm720t_target,
NULL,
};
target_t *targets = NULL;
target_event_callback_t *target_event_callbacks = NULL;
target_timer_callback_t *target_timer_callbacks = NULL;
char *target_state_strings[] =
{
"unknown",
"running",
"halted",
"reset",
"debug_running",
};
char *target_debug_reason_strings[] =
{
"debug request", "breakpoint", "watchpoint",
"watchpoint and breakpoint", "single step",
"target not halted"
};
char *target_endianess_strings[] =
{
"big endian",
"little endian",
};
enum daemon_startup_mode startup_mode = DAEMON_ATTACH;
static int target_continous_poll = 1;
/* returns a pointer to the n-th configured target */
target_t* get_target_by_num(int num)
{
target_t *target = targets;
int i = 0;
while (target)
{
if (num == i)
return target;
target = target->next;
i++;
}
return NULL;
}
int get_num_by_target(target_t *query_target)
{
target_t *target = targets;
int i = 0;
while (target)
{
if (target == query_target)
return i;
target = target->next;
i++;
}
return -1;
}
target_t* get_current_target(command_context_t *cmd_ctx)
{
target_t *target = get_target_by_num(cmd_ctx->current_target);
if (target == NULL)
{
ERROR("BUG: current_target out of bounds");
exit(-1);
}
return target;
}
/* Process target initialization, when target entered debug out of reset
* the handler is unregistered at the end of this function, so it's only called once
*/
int target_init_handler(struct target_s *target, enum target_event event, void *priv)
{
FILE *script;
struct command_context_s *cmd_ctx = priv;
if ((event == TARGET_EVENT_HALTED) && (target->reset_script))
{
script = fopen(target->reset_script, "r");
if (!script)
{
ERROR("couldn't open script file %s", target->reset_script);
return ERROR_OK;
}
INFO("executing reset script '%s'", target->reset_script);
command_run_file(cmd_ctx, script, COMMAND_EXEC);
fclose(script);
jtag_execute_queue();
target_unregister_event_callback(target_init_handler, priv);
}
return ERROR_OK;
}
int target_run_and_halt_handler(void *priv)
{
target_t *target = priv;
target->type->halt(target);
return ERROR_OK;
}
int target_process_reset(struct command_context_s *cmd_ctx)
{
int retval = ERROR_OK;
target_t *target;
target = targets;
while (target)
{
target->type->assert_reset(target);
target = target->next;
}
jtag_execute_queue();
/* request target halt if necessary, and schedule further action */
target = targets;
while (target)
{
switch (target->reset_mode)
{
case RESET_RUN:
/* nothing to do if target just wants to be run */
break;
case RESET_RUN_AND_HALT:
/* schedule halt */
target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
break;
case RESET_RUN_AND_INIT:
/* schedule halt */
target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
target_register_event_callback(target_init_handler, cmd_ctx);
break;
case RESET_HALT:
target->type->halt(target);
break;
case RESET_INIT:
target->type->halt(target);
target_register_event_callback(target_init_handler, cmd_ctx);
break;
default:
ERROR("BUG: unknown target->reset_mode");
}
target = target->next;
}
target = targets;
while (target)
{
target->type->deassert_reset(target);
target = target->next;
}
jtag_execute_queue();
return retval;
}
int target_init(struct command_context_s *cmd_ctx)
{
target_t *target = targets;
while (target)
{
if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
{
ERROR("target '%s' init failed", target->type->name);
exit(-1);
}
target = target->next;
}
if (targets)
{
target_register_user_commands(cmd_ctx);
target_register_timer_callback(handle_target, 100, 1, NULL);
}
if (startup_mode == DAEMON_RESET)
target_process_reset(cmd_ctx);
return ERROR_OK;
}
int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
{
target_event_callback_t **callbacks_p = &target_event_callbacks;
if (callback == NULL)
{
return ERROR_INVALID_ARGUMENTS;
}
if (*callbacks_p)
{
while ((*callbacks_p)->next)
callbacks_p = &((*callbacks_p)->next);
callbacks_p = &((*callbacks_p)->next);
}
(*callbacks_p) = malloc(sizeof(target_event_callback_t));
(*callbacks_p)->callback = callback;
(*callbacks_p)->priv = priv;
(*callbacks_p)->next = NULL;
return ERROR_OK;
}
int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
{
target_timer_callback_t **callbacks_p = &target_timer_callbacks;
struct timeval now;
if (callback == NULL)
{
return ERROR_INVALID_ARGUMENTS;
}
if (*callbacks_p)
{
while ((*callbacks_p)->next)
callbacks_p = &((*callbacks_p)->next);
callbacks_p = &((*callbacks_p)->next);
}
(*callbacks_p) = malloc(sizeof(target_timer_callback_t));
(*callbacks_p)->callback = callback;
(*callbacks_p)->periodic = periodic;
(*callbacks_p)->time_ms = time_ms;
gettimeofday(&now, NULL);
(*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
time_ms -= (time_ms % 1000);
(*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
if ((*callbacks_p)->when.tv_usec > 1000000)
{
(*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
(*callbacks_p)->when.tv_sec += 1;
}
(*callbacks_p)->priv = priv;
(*callbacks_p)->next = NULL;
return ERROR_OK;
}
int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
{
target_event_callback_t **p = &target_event_callbacks;
target_event_callback_t *c = target_event_callbacks;
if (callback == NULL)
{
return ERROR_INVALID_ARGUMENTS;
}
while (c)
{
target_event_callback_t *next = c->next;
if ((c->callback == callback) && (c->priv == priv))
{
*p = next;
free(c);
return ERROR_OK;
}
else
p = &(c->next);
c = next;
}
return ERROR_OK;
}
int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
{
target_timer_callback_t **p = &target_timer_callbacks;
target_timer_callback_t *c = target_timer_callbacks;
if (callback == NULL)
{
return ERROR_INVALID_ARGUMENTS;
}
while (c)
{
target_timer_callback_t *next = c->next;
if ((c->callback == callback) && (c->priv == priv))
{
*p = next;
free(c);
return ERROR_OK;
}
else
p = &(c->next);
c = next;
}
return ERROR_OK;
}
int target_call_event_callbacks(target_t *target, enum target_event event)
{
target_event_callback_t *callback = target_event_callbacks;
target_event_callback_t *next_callback;
DEBUG("target event %i", event);
while (callback)
{
next_callback = callback->next;
callback->callback(target, event, callback->priv);
callback = next_callback;
}
return ERROR_OK;
}
int target_call_timer_callbacks()
{
target_timer_callback_t *callback = target_timer_callbacks;
target_timer_callback_t *next_callback;
struct timeval now;
gettimeofday(&now, NULL);
while (callback)
{
next_callback = callback->next;
if (((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
|| (now.tv_sec > callback->when.tv_sec))
{
callback->callback(callback->priv);
if (callback->periodic)
{
int time_ms = callback->time_ms;
callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
time_ms -= (time_ms % 1000);
callback->when.tv_sec = now.tv_sec + time_ms / 1000;
if (callback->when.tv_usec > 1000000)
{
callback->when.tv_usec = callback->when.tv_usec - 1000000;
callback->when.tv_sec += 1;
}
}
else
target_unregister_timer_callback(callback->callback, callback->priv);
}
callback = next_callback;
}
return ERROR_OK;
}
int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
{
working_area_t *c = target->working_areas;
working_area_t *new_wa = NULL;
/* only allocate multiples of 4 byte */
if (size % 4)
{
ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
size = CEIL(size, 4);
}
/* see if there's already a matching working area */
while (c)
{
if ((c->free) && (c->size == size))
{
new_wa = c;
break;
}
c = c->next;
}
/* if not, allocate a new one */
if (!new_wa)
{
working_area_t **p = &target->working_areas;
u32 first_free = target->working_area;
u32 free_size = target->working_area_size;
DEBUG("allocating new working area");
c = target->working_areas;
while (c)
{
first_free += c->size;
free_size -= c->size;
p = &c->next;
c = c->next;
}
if (free_size < size)
{
WARNING("not enough working area available");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
new_wa = malloc(sizeof(working_area_t));
new_wa->next = NULL;
new_wa->size = size;
new_wa->address = first_free;
if (target->backup_working_area)
{
new_wa->backup = malloc(new_wa->size);
target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
}
else
{
new_wa->backup = NULL;
}
/* put new entry in list */
*p = new_wa;
}
/* mark as used, and return the new (reused) area */
new_wa->free = 0;
*area = new_wa;
/* user pointer */
new_wa->user = area;
return ERROR_OK;
}
int target_free_working_area(struct target_s *target, working_area_t *area)
{
if (area->free)
return ERROR_OK;
if (target->backup_working_area)
target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
area->free = 1;
/* mark user pointer invalid */
*area->user = NULL;
area->user = NULL;
return ERROR_OK;
}
int target_free_all_working_areas(struct target_s *target)
{
working_area_t *c = target->working_areas;
while (c)
{
working_area_t *next = c->next;
target_free_working_area(target, c);
if (c->backup)
free(c->backup);
free(c);
c = next;
}
target->working_areas = NULL;
return ERROR_OK;
}
int target_register_commands(struct command_context_s *cmd_ctx)
{
register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
register_command(cmd_ctx, NULL, "daemon_startup", handle_daemon_startup_command, COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_CONFIG, NULL);
return ERROR_OK;
}
int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
{
int retval;
DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
/* handle writes of less than 4 byte */
if (size < 4)
{
if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
return retval;
}
/* handle unaligned head bytes */
if (address % 4)
{
int unaligned = 4 - (address % 4);
if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
return retval;
buffer += unaligned;
address += unaligned;
size -= unaligned;
}
/* handle aligned words */
if (size >= 4)
{
int aligned = size - (size % 4);
/* use bulk writes above a certain limit. This may have to be changed */
if (aligned > 128)
{
if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
return retval;
}
else
{
if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
return retval;
}
buffer += aligned;
address += aligned;
size -= aligned;
}
/* handle tail writes of less than 4 bytes */
if (size > 0)
{
if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
return retval;
}
return ERROR_OK;
}
int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
{
int retval;
DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
/* handle reads of less than 4 byte */
if (size < 4)
{
if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
return retval;
}
/* handle unaligned head bytes */
if (address % 4)
{
int unaligned = 4 - (address % 4);
if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
return retval;
address += unaligned;
size -= unaligned;
}
/* handle aligned words */
if (size >= 4)
{
int aligned = size - (size % 4);
if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
return retval;
address += aligned;
size -= aligned;
}
/* handle tail writes of less than 4 bytes */
if (size > 0)
{
if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
return retval;
}
return ERROR_OK;
}
int target_register_user_commands(struct command_context_s *cmd_ctx)
{
register_command(cmd_ctx, NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
register_command(cmd_ctx, NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
register_command(cmd_ctx, NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt");
register_command(cmd_ctx, NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
register_command(cmd_ctx, NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
register_command(cmd_ctx, NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction");
register_command(cmd_ctx, NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
register_command(cmd_ctx, NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
register_command(cmd_ctx, NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
register_command(cmd_ctx, NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
register_command(cmd_ctx, NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
register_command(cmd_ctx, NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value>");
register_command(cmd_ctx, NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value>");
register_command(cmd_ctx, NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value>");
register_command(cmd_ctx, NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");
register_command(cmd_ctx, NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
register_command(cmd_ctx, NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");
register_command(cmd_ctx, NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
register_command(cmd_ctx, NULL, "load_binary", handle_load_binary_command, COMMAND_EXEC, "load binary <file> <address>");
register_command(cmd_ctx, NULL, "dump_binary", handle_dump_binary_command, COMMAND_EXEC, "dump binary <file> <address> <size>");
return ERROR_OK;
}
int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = targets;
int count = 0;
if (argc == 1)
{
int num = strtoul(args[0], NULL, 0);
while (target)
{
count++;
target = target->next;
}
if (num < count)
cmd_ctx->current_target = num;
else
command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
return ERROR_OK;
}
while (target)
{
command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
target = target->next;
}
return ERROR_OK;
}
int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int i;
int found = 0;
if (argc < 3)
{
ERROR("target command requires at least three arguments: <type> <endianess> <reset_mode>");
exit(-1);
}
/* search for the specified target */
if (args[0] && (args[0][0] != 0))
{
for (i = 0; target_types[i]; i++)
{
if (strcmp(args[0], target_types[i]->name) == 0)
{
target_t **last_target_p = &targets;
/* register target specific commands */
if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
{
ERROR("couldn't register '%s' commands", args[0]);
exit(-1);
}
if (*last_target_p)
{
while ((*last_target_p)->next)
last_target_p = &((*last_target_p)->next);
last_target_p = &((*last_target_p)->next);
}
*last_target_p = malloc(sizeof(target_t));
(*last_target_p)->type = target_types[i];
if (strcmp(args[1], "big") == 0)
(*last_target_p)->endianness = TARGET_BIG_ENDIAN;
else if (strcmp(args[1], "little") == 0)
(*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
else
{
ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
exit(-1);
}
/* what to do on a target reset */
if (strcmp(args[2], "reset_halt") == 0)
(*last_target_p)->reset_mode = RESET_HALT;
else if (strcmp(args[2], "reset_run") == 0)
(*last_target_p)->reset_mode = RESET_RUN;
else if (strcmp(args[2], "reset_init") == 0)
(*last_target_p)->reset_mode = RESET_INIT;
else if (strcmp(args[2], "run_and_halt") == 0)
(*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
else if (strcmp(args[2], "run_and_init") == 0)
(*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
else
{
ERROR("unknown target startup mode %s", args[2]);
exit(-1);
}
(*last_target_p)->run_and_halt_time = 1000; /* default 1s */
(*last_target_p)->reset_script = NULL;
(*last_target_p)->post_halt_script = NULL;
(*last_target_p)->pre_resume_script = NULL;
(*last_target_p)->working_area = 0x0;
(*last_target_p)->working_area_size = 0x0;
(*last_target_p)->working_areas = NULL;
(*last_target_p)->backup_working_area = 0;
(*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
(*last_target_p)->state = TARGET_UNKNOWN;
(*last_target_p)->reg_cache = NULL;
(*last_target_p)->breakpoints = NULL;
(*last_target_p)->watchpoints = NULL;
(*last_target_p)->next = NULL;
(*last_target_p)->arch_info = NULL;
(*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
found = 1;
break;
}
}
}
/* no matching target found */
if (!found)
{
ERROR("target '%s' not found", args[0]);
exit(-1);
}
return ERROR_OK;
}
/* usage: target_script <target#> <event> <script_file> */
int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = NULL;
if (argc < 3)
{
ERROR("incomplete target_script command");
exit(-1);
}
target = get_target_by_num(strtoul(args[0], NULL, 0));
if (!target)
{
ERROR("target number '%s' not defined", args[0]);
exit(-1);
}
if (strcmp(args[1], "reset") == 0)
{
if (target->reset_script)
free(target->reset_script);
target->reset_script = strdup(args[2]);
}
else if (strcmp(args[1], "post_halt") == 0)
{
if (target->post_halt_script)
free(target->post_halt_script);
target->post_halt_script = strdup(args[2]);
}
else if (strcmp(args[1], "pre_resume") == 0)
{
if (target->pre_resume_script)
free(target->pre_resume_script);
target->pre_resume_script = strdup(args[2]);
}
else
{
ERROR("unknown event type: '%s", args[1]);
exit(-1);
}
return ERROR_OK;
}
int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = NULL;
if (argc < 2)
{
ERROR("incomplete run_and_halt_time command");
exit(-1);
}
target = get_target_by_num(strtoul(args[0], NULL, 0));
if (!target)
{
ERROR("target number '%s' not defined", args[0]);
exit(-1);
}
target->run_and_halt_time = strtoul(args[1], NULL, 0);
return ERROR_OK;
}
int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = NULL;
if (argc < 4)
{
ERROR("incomplete working_area command. usage: working_area <target#> <address> <size> <'backup'|'nobackup'>");
exit(-1);
}
target = get_target_by_num(strtoul(args[0], NULL, 0));
if (!target)
{
ERROR("target number '%s' not defined", args[0]);
exit(-1);
}
target->working_area = strtoul(args[1], NULL, 0);
target->working_area_size = strtoul(args[2], NULL, 0);
if (strcmp(args[3], "backup") == 0)
{
target->backup_working_area = 1;
}
else if (strcmp(args[3], "nobackup") == 0)
{
target->backup_working_area = 0;
}
else
{
ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
exit(-1);
}
return ERROR_OK;
}
/* process target state changes */
int handle_target(void *priv)
{
int retval;
target_t *target = targets;
while (target)
{
/* only poll if target isn't already halted */
if (target->state != TARGET_HALTED)
{
if (target_continous_poll)
if ((retval = target->type->poll(target)) < 0)
{
ERROR("couldn't poll target, exiting");
exit(-1);
}
}
target = target->next;
}
return ERROR_OK;
}
int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target;
reg_t *reg = NULL;
int count = 0;
char *value;
DEBUG("");
target = get_current_target(cmd_ctx);
/* list all available registers for the current target */
if (argc == 0)
{
reg_cache_t *cache = target->reg_cache;
count = 0;
while(cache)
{
int i;
for (i = 0; i < cache->num_regs; i++)
{
value = buf_to_char(cache->reg_list[i].value, cache->reg_list[i].size);
command_print(cmd_ctx, "(%i) %s (/%i): 0x%s (dirty: %i, valid: %i)", count++, cache->reg_list[i].name, cache->reg_list[i].size, value, cache->reg_list[i].dirty, cache->reg_list[i].valid);
free(value);
}
cache = cache->next;
}
return ERROR_OK;
}
/* access a single register by its ordinal number */
if ((args[0][0] >= '0') && (args[0][0] <= '9'))
{
int num = strtoul(args[0], NULL, 0);
reg_cache_t *cache = target->reg_cache;
count = 0;
while(cache)
{
int i;
for (i = 0; i < cache->num_regs; i++)
{
if (count++ == num)
{
reg = &cache->reg_list[i];
break;
}
}
if (reg)
break;
cache = cache->next;
}
if (!reg)
{
command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
return ERROR_OK;
}
} else /* access a single register by its name */
{
reg = register_get_by_name(target->reg_cache, args[0], 1);
if (!reg)
{
command_print(cmd_ctx, "register %s not found in current target", args[0]);
return ERROR_OK;
}
}
/* display a register */
if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
{
if ((argc == 2) && (strcmp(args[1], "force") == 0))
reg->valid = 0;
if (reg->valid == 0)
{
reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
if (arch_type == NULL)
{
ERROR("BUG: encountered unregistered arch type");
return ERROR_OK;
}
arch_type->get(reg);
}
value = buf_to_char(reg->value, reg->size);
command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
free(value);
return ERROR_OK;
}
/* set register value */
if (argc == 2)
{
u32 new_value = strtoul(args[1], NULL, 0);
reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
if (arch_type == NULL)
{
ERROR("BUG: encountered unregistered arch type");
return ERROR_OK;
}
arch_type->set(reg, new_value);
value = buf_to_char(reg->value, reg->size);
command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
free(value);
return ERROR_OK;
}
command_print(cmd_ctx, "usage: reg <#|name> [value]");
return ERROR_OK;
}
int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
char buffer[512];
if (argc == 0)
{
command_print(cmd_ctx, "target state: %s", target_state_strings[target->type->poll(target)]);
if (target->state == TARGET_HALTED)
{
target->type->arch_state(target, buffer, 512);
buffer[511] = 0;
command_print(cmd_ctx, "%s", buffer);
}
}
else
{
if (strcmp(args[0], "on") == 0)
{
target_continous_poll = 1;
}
else if (strcmp(args[0], "off") == 0)
{
target_continous_poll = 0;
}
}
return ERROR_OK;
}
int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
struct timeval timeout, now;
gettimeofday(&timeout, NULL);
timeval_add_time(&timeout, 5, 0);
command_print(cmd_ctx, "waiting for target halted...");
while(target->type->poll(target))
{
if (target->state == TARGET_HALTED)
{
command_print(cmd_ctx, "target halted");
break;
}
target_call_timer_callbacks();
gettimeofday(&now, NULL);
if ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))
{
command_print(cmd_ctx, "timed out while waiting for target halt");
ERROR("timed out while waiting for target halt");
break;
}
}
return ERROR_OK;
}
int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int retval;
target_t *target = get_current_target(cmd_ctx);
DEBUG("");
command_print(cmd_ctx, "requesting target halt...");
if ((retval = target->type->halt(target)) != ERROR_OK)
{
switch (retval)
{
case ERROR_TARGET_ALREADY_HALTED:
command_print(cmd_ctx, "target already halted");
break;
case ERROR_TARGET_TIMEOUT:
command_print(cmd_ctx, "target timed out... shutting down");
exit(-1);
default:
command_print(cmd_ctx, "unknown error... shutting down");
exit(-1);
}
}
return ERROR_OK;
}
/* what to do on daemon startup */
int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
if (argc == 1)
{
if (strcmp(args[0], "attach") == 0)
{
startup_mode = DAEMON_ATTACH;
return ERROR_OK;
}
else if (strcmp(args[0], "reset") == 0)
{
startup_mode = DAEMON_RESET;
return ERROR_OK;
}
}
WARNING("invalid daemon_startup configuration directive: %s", args[0]);
return ERROR_OK;
}
int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
int retval;
command_print(cmd_ctx, "requesting target halt and executing a soft reset");
if ((retval = target->type->soft_reset_halt(target)) != ERROR_OK)
{
switch (retval)
{
case ERROR_TARGET_TIMEOUT:
command_print(cmd_ctx, "target timed out... shutting down");
exit(-1);
default:
command_print(cmd_ctx, "unknown error... shutting down");
exit(-1);
}
}
return ERROR_OK;
}
int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
enum target_reset_mode reset_mode = RESET_RUN;
DEBUG("");
if (argc >= 1)
{
if (strcmp("run", args[0]) == 0)
reset_mode = RESET_RUN;
else if (strcmp("halt", args[0]) == 0)
reset_mode = RESET_HALT;
else if (strcmp("init", args[0]) == 0)
reset_mode = RESET_INIT;
else if (strcmp("run_and_halt", args[0]) == 0)
{
reset_mode = RESET_RUN_AND_HALT;
if (argc >= 2)
{
target->run_and_halt_time = strtoul(args[1], NULL, 0);
}
}
else if (strcmp("run_and_init", args[0]) == 0)
{
reset_mode = RESET_RUN_AND_INIT;
if (argc >= 2)
{
target->run_and_halt_time = strtoul(args[1], NULL, 0);
}
}
else
{
command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
return ERROR_OK;
}
target->reset_mode = reset_mode;
}
target_process_reset(cmd_ctx);
return ERROR_OK;
}
int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int retval;
target_t *target = get_current_target(cmd_ctx);
DEBUG("");
if (argc == 0)
retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
else if (argc == 1)
retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
else
{
command_print(cmd_ctx, "usage: resume [address]");
return ERROR_OK;
}
if (retval != ERROR_OK)
{
switch (retval)
{
case ERROR_TARGET_NOT_HALTED:
command_print(cmd_ctx, "target not halted");
break;
default:
command_print(cmd_ctx, "unknown error... shutting down");
exit(-1);
}
}
return ERROR_OK;
}
int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
DEBUG("");
if (argc == 0)
target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
if (argc == 1)
target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
return ERROR_OK;
}
int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int count = 1;
int size = 4;
u32 address = 0;
int i;
char output[128];
int output_len;
int retval;
u8 *buffer;
target_t *target = get_current_target(cmd_ctx);
if (argc < 1)
return ERROR_OK;
if (argc == 2)
count = strtoul(args[1], NULL, 0);
address = strtoul(args[0], NULL, 0);
switch (cmd[2])
{
case 'w':
size = 4;
break;
case 'h':
size = 2;
break;
case 'b':
size = 1;
break;
default:
return ERROR_OK;
}
buffer = calloc(count, size);
if ((retval = target->type->read_memory(target, address, size, count, buffer)) != ERROR_OK)
{
switch (retval)
{
case ERROR_TARGET_UNALIGNED_ACCESS:
command_print(cmd_ctx, "error: address not aligned");
break;
case ERROR_TARGET_NOT_HALTED:
command_print(cmd_ctx, "error: target must be halted for memory accesses");
break;
case ERROR_TARGET_DATA_ABORT:
command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
break;
default:
command_print(cmd_ctx, "error: unknown error");
break;
}
}
output_len = 0;
for (i = 0; i < count; i++)
{
if (i%8 == 0)
output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
switch (size)
{
case 4:
output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", ((u32*)buffer)[i]);
break;
case 2:
output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", ((u16*)buffer)[i]);
break;
case 1:
output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", ((u8*)buffer)[i]);
break;
}
if ((i%8 == 7) || (i == count - 1))
{
command_print(cmd_ctx, output);
output_len = 0;
}
}
free(buffer);
return ERROR_OK;
}
int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
u32 address = 0;
u32 value = 0;
int retval;
target_t *target = get_current_target(cmd_ctx);
if (argc < 2)
return ERROR_OK;
address = strtoul(args[0], NULL, 0);
value = strtoul(args[1], NULL, 0);
switch (cmd[2])
{
case 'w':
retval = target->type->write_memory(target, address, 4, 1, (u8*)&value);
break;
case 'h':
retval = target->type->write_memory(target, address, 2, 1, (u8*)&value);
break;
case 'b':
retval = target->type->write_memory(target, address, 1, 1, (u8*)&value);
break;
default:
return ERROR_OK;
}
switch (retval)
{
case ERROR_TARGET_UNALIGNED_ACCESS:
command_print(cmd_ctx, "error: address not aligned");
break;
case ERROR_TARGET_DATA_ABORT:
command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
break;
case ERROR_TARGET_NOT_HALTED:
command_print(cmd_ctx, "error: target must be halted for memory accesses");
break;
case ERROR_OK:
break;
default:
command_print(cmd_ctx, "error: unknown error");
break;
}
return ERROR_OK;
}
int handle_load_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
FILE *binary;
u32 address;
struct stat binary_stat;
u32 binary_size;
u8 *buffer;
u32 buf_cnt;
struct timeval start, end;
target_t *target = get_current_target(cmd_ctx);
if (argc != 2)
{
command_print(cmd_ctx, "usage: load_binary <filename> <address>");
return ERROR_OK;
}
address = strtoul(args[1], NULL, 0);
if (stat(args[0], &binary_stat) == -1)
{
ERROR("couldn't stat() %s: %s", args[0], strerror(errno));
command_print(cmd_ctx, "error accessing file %s", args[0]);
return ERROR_OK;
}
if (!(binary = fopen(args[0], "r")))
{
ERROR("couldn't open %s: %s", args[0], strerror(errno));
command_print(cmd_ctx, "error accessing file %s", args[0]);
return ERROR_OK;
}
buffer = malloc(128 * 1024);
gettimeofday(&start, NULL);
binary_size = binary_stat.st_size;
while (binary_size > 0)
{
buf_cnt = fread(buffer, 1, 128*1024, binary);
target_write_buffer(target, address, buf_cnt, buffer);
address += buf_cnt;
binary_size -= buf_cnt;
}
gettimeofday(&end, NULL);
free(buffer);
command_print(cmd_ctx, "downloaded %lli byte in %is %ius", (long long) binary_stat.st_size, end.tv_sec - start.tv_sec, end.tv_usec - start.tv_usec);
fclose(binary);
return ERROR_OK;
}
int handle_dump_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
FILE *binary;
u32 address;
u32 size;
u8 buffer[560];
target_t *target = get_current_target(cmd_ctx);
if (argc != 3)
{
command_print(cmd_ctx, "usage: dump_binary <filename> <address> <size>");
return ERROR_OK;
}
address = strtoul(args[1], NULL, 0);
size = strtoul(args[2], NULL, 0);
if (!(binary = fopen(args[0], "w")))
{
ERROR("couldn't open %s for writing: %s", args[0], strerror(errno));
command_print(cmd_ctx, "error accessing file %s", args[0]);
return ERROR_OK;
}
if ((address & 3) || (size & 3))
{
command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
return ERROR_OK;
}
while (size > 0)
{
u32 this_run_size = (size > 560) ? 560 : size;
target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
fwrite(buffer, 1, this_run_size, binary);
size -= this_run_size;
address += this_run_size;
}
fclose(binary);
return ERROR_OK;
}
int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int retval;
target_t *target = get_current_target(cmd_ctx);
if (argc == 0)
{
breakpoint_t *breakpoint = target->breakpoints;
while (breakpoint)
{
if (breakpoint->type == BKPT_SOFT)
{
char* buf = buf_to_char(breakpoint->orig_instr, breakpoint->length);
command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
free(buf);
}
else
{
command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
}
breakpoint = breakpoint->next;
}
}
else if (argc >= 2)
{
int hw = BKPT_SOFT;
u32 length = 0;
length = strtoul(args[1], NULL, 0);
if (argc >= 3)
if (strcmp(args[2], "hw") == 0)
hw = BKPT_HARD;
if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
{
switch (retval)
{
case ERROR_TARGET_NOT_HALTED:
command_print(cmd_ctx, "target must be halted to set breakpoints");
break;
case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
command_print(cmd_ctx, "no more breakpoints available");
break;
default:
command_print(cmd_ctx, "unknown error, breakpoint not set");
break;
}
}
}
return ERROR_OK;
}
int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
if (argc > 0)
breakpoint_remove(target, strtoul(args[0], NULL, 0));
return ERROR_OK;
}
int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
if (argc == 0)
{
watchpoint_t *watchpoint = target->watchpoints;
while (watchpoint)
{
command_print(cmd_ctx, "address: 0x%8.8x, mask: 0x%8.8x, r/w/a: %i, value: 0x%8.8x, mask: 0x%8.8x", watchpoint->address, watchpoint->length, watchpoint->rw, watchpoint->value, watchpoint->mask);
watchpoint = watchpoint->next;
}
}
else if (argc >= 2)
{
enum watchpoint_rw type = WPT_ACCESS;
u32 data_value = 0x0;
u32 data_mask = 0xffffffff;
if (argc >= 3)
{
switch(args[2][0])
{
case 'r':
type = WPT_READ;
break;
case 'w':
type = WPT_WRITE;
break;
case 'a':
type = WPT_ACCESS;
break;
default:
command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
return ERROR_OK;
}
}
if (argc >= 4)
{
data_value = strtoul(args[3], NULL, 0);
}
if (argc >= 5)
{
data_mask = strtoul(args[4], NULL, 0);
}
watchpoint_add(target, strtoul(args[0], NULL, 0), strtoul(args[1], NULL, 0), type, data_value, data_mask);
}
else
{
command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
}
return ERROR_OK;
}
int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
if (argc > 0)
watchpoint_remove(target, strtoul(args[0], NULL, 0));
return ERROR_OK;
}
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