* Copyright (C) ST-Ericsson SA 2011 *
* michel.jaouen@stericsson.com : smp minimum support *
* *
+ * Copyright (C) 2013 Andes Technology *
+ * Hsiangkai Wang <hkwang@andestech.com> *
+ * *
+ * Copyright (C) 2013 Franck Jullien *
+ * elec4fun@gmail.com *
+ * *
* 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 *
* 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. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <target/breakpoints.h>
#include <target/target_request.h>
#include <target/register.h>
+#include <target/target.h>
+#include <target/target_type.h>
#include "server.h"
#include <flash/nor/core.h>
#include "gdb_server.h"
* found in most modern embedded processors.
*/
+struct target_desc_format {
+ char *tdesc;
+ uint32_t tdesc_length;
+};
+
/* private connection data for GDB */
struct gdb_connection {
char buffer[GDB_BUFFER_SIZE];
int ctrl_c;
enum target_state frontend_state;
struct image *vflash_image;
- int closed;
- int busy;
+ bool closed;
+ bool busy;
int noack_mode;
/* set flag to true if you want the next stepi to return immediately.
* allowing GDB to pick up a fresh set of register values from the target
* can be replied immediately and a new GDB packet will be ready without delay
* (ca. 10% or so...). */
bool mem_write_error;
+ /* with extended-remote it seems we need to better emulate attach/detach.
+ * what this means is we reply with a W stop reply after a kill packet,
+ * normally we reply with a S reply via gdb_last_signal_packet.
+ * as a side note this behaviour only effects gdb > 6.8 */
+ bool attached;
+ /* temporarily used for target description support */
+ struct target_desc_format target_desc;
+ /* temporarily used for thread list support */
+ char *thread_list;
};
#if 0
static enum breakpoint_type gdb_breakpoint_override_type;
static int gdb_error(struct connection *connection, int retval);
-static const char *gdb_port;
-static const char *gdb_port_next;
-static const char DIGITS[16] = "0123456789abcdef";
+static char *gdb_port;
+static char *gdb_port_next;
static void gdb_log_callback(void *priv, const char *file, unsigned line,
const char *function, const char *string);
+static void gdb_sig_halted(struct connection *connection);
+
/* number of gdb connections, mainly to suppress gdb related debugging spam
* in helper/log.c when no gdb connections are actually active */
int gdb_actual_connections;
* Disabled by default.
*/
static int gdb_report_data_abort;
+/* If set, errors when accessing registers are reported to gdb. Disabled by
+ * default. */
+static int gdb_report_register_access_error;
+
+/* set if we are sending target descriptions to gdb
+ * via qXfer:features:read packet */
+/* enabled by default */
+static int gdb_use_target_description = 1;
+
+/* current processing free-run type, used by file-I/O */
+static char gdb_running_type;
static int gdb_last_signal(struct target *target)
{
if (gdb_con->buf_cnt > 0)
break;
if (gdb_con->buf_cnt == 0) {
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
usleep(1000);
break;
case WSAECONNABORTED:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
case WSAECONNRESET:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
default:
LOG_ERROR("read: %d", errno);
usleep(1000);
break;
case ECONNABORTED:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
case ECONNRESET:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
default:
LOG_ERROR("read: %s", strerror(errno));
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
#endif
if (connection_write(connection, data, len) == len)
return ERROR_OK;
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
if ((size_t)len + 4 <= sizeof(local_buffer)) {
/* performance gain on smaller packets by only a single call to gdb_write() */
memcpy(local_buffer + 1, buffer, len++);
- local_buffer[len++] = '#';
- local_buffer[len++] = DIGITS[(my_checksum >> 4) & 0xf];
- local_buffer[len++] = DIGITS[my_checksum & 0xf];
+ len += snprintf(local_buffer + len, sizeof(local_buffer) - len, "#%02x", my_checksum);
retval = gdb_write(connection, local_buffer, len);
if (retval != ERROR_OK)
return retval;
} else {
/* larger packets are transmitted directly from caller supplied buffer
* by several calls to gdb_write() to avoid dynamic allocation */
- local_buffer[1] = '#';
- local_buffer[2] = DIGITS[(my_checksum >> 4) & 0xf];
- local_buffer[3] = DIGITS[my_checksum & 0xf];
+ snprintf(local_buffer + 1, sizeof(local_buffer) - 1, "#%02x", my_checksum);
retval = gdb_write(connection, local_buffer, 1);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
} else {
LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply);
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
} else if (reply == '$') {
} else {
LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection",
reply);
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
}
int gdb_put_packet(struct connection *connection, char *buffer, int len)
{
struct gdb_connection *gdb_con = connection->priv;
- gdb_con->busy = 1;
+ gdb_con->busy = true;
int retval = gdb_put_packet_inner(connection, buffer, len);
- gdb_con->busy = 0;
+ gdb_con->busy = false;
/* we sent some data, reset timer for keep alive messages */
kept_alive();
case '$':
break;
case '+':
- /* gdb sends a dummy ack '+' at every remote connect - see
- * remote_start_remote (remote.c)
- * in case anyone tries to debug why they receive this
- * warning every time */
- LOG_WARNING("acknowledgment received, but no packet pending");
+ /* According to the GDB documentation
+ * (https://sourceware.org/gdb/onlinedocs/gdb/Packet-Acknowledgment.html):
+ * "gdb sends a final `+` acknowledgment of the stub's `OK`
+ * response, which can be safely ignored by the stub."
+ * However OpenOCD server already is in noack mode at this
+ * point and instead of ignoring this it was emitting a
+ * warning. This code makes server ignore the first ACK
+ * that will be received after going into noack mode,
+ * warning only about subsequent ACK's. */
+ if (gdb_con->noack_mode > 1) {
+ LOG_WARNING("acknowledgment received, but no packet pending");
+ } else if (gdb_con->noack_mode) {
+ LOG_DEBUG("Received first acknowledgment after entering noack mode. Ignoring it.");
+ gdb_con->noack_mode = 2;
+ }
break;
case '-':
LOG_WARNING("negative acknowledgment, but no packet pending");
static int gdb_get_packet(struct connection *connection, char *buffer, int *len)
{
struct gdb_connection *gdb_con = connection->priv;
- gdb_con->busy = 1;
+ gdb_con->busy = true;
int retval = gdb_get_packet_inner(connection, buffer, len);
- gdb_con->busy = 0;
+ gdb_con->busy = false;
return retval;
}
static int gdb_output_con(struct connection *connection, const char *line)
{
char *hex_buffer;
- int i, bin_size;
+ int bin_size;
bin_size = strlen(line);
- hex_buffer = malloc(bin_size*2 + 2);
+ hex_buffer = malloc(bin_size * 2 + 2);
if (hex_buffer == NULL)
return ERROR_GDB_BUFFER_TOO_SMALL;
hex_buffer[0] = 'O';
- for (i = 0; i < bin_size; i++)
- snprintf(hex_buffer + 1 + i*2, 3, "%2.2x", line[i]);
- hex_buffer[bin_size*2 + 1] = 0;
-
- int retval = gdb_put_packet(connection, hex_buffer, bin_size*2 + 1);
+ size_t pkt_len = hexify(hex_buffer + 1, (const uint8_t *)line, bin_size,
+ bin_size * 2 + 1);
+ int retval = gdb_put_packet(connection, hex_buffer, pkt_len + 1);
free(hex_buffer);
return retval;
return ERROR_OK;
}
+static void gdb_signal_reply(struct target *target, struct connection *connection)
+{
+ struct gdb_connection *gdb_connection = connection->priv;
+ char sig_reply[45];
+ char stop_reason[20];
+ char current_thread[25];
+ int sig_reply_len;
+ int signal_var;
+
+ rtos_update_threads(target);
+
+ if (target->debug_reason == DBG_REASON_EXIT) {
+ sig_reply_len = snprintf(sig_reply, sizeof(sig_reply), "W00");
+ } else {
+ if (gdb_connection->ctrl_c) {
+ signal_var = 0x2;
+ } else
+ signal_var = gdb_last_signal(target);
+
+ stop_reason[0] = '\0';
+ if (target->debug_reason == DBG_REASON_WATCHPOINT) {
+ enum watchpoint_rw hit_wp_type;
+ target_addr_t hit_wp_address;
+
+ if (watchpoint_hit(target, &hit_wp_type, &hit_wp_address) == ERROR_OK) {
+
+ switch (hit_wp_type) {
+ case WPT_WRITE:
+ snprintf(stop_reason, sizeof(stop_reason),
+ "watch:%08" TARGET_PRIxADDR ";", hit_wp_address);
+ break;
+ case WPT_READ:
+ snprintf(stop_reason, sizeof(stop_reason),
+ "rwatch:%08" TARGET_PRIxADDR ";", hit_wp_address);
+ break;
+ case WPT_ACCESS:
+ snprintf(stop_reason, sizeof(stop_reason),
+ "awatch:%08" TARGET_PRIxADDR ";", hit_wp_address);
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ current_thread[0] = '\0';
+ if (target->rtos != NULL) {
+ struct target *ct;
+ snprintf(current_thread, sizeof(current_thread), "thread:%016" PRIx64 ";",
+ target->rtos->current_thread);
+ target->rtos->current_threadid = target->rtos->current_thread;
+ target->rtos->gdb_target_for_threadid(connection, target->rtos->current_threadid, &ct);
+ if (!gdb_connection->ctrl_c)
+ signal_var = gdb_last_signal(ct);
+ }
+
+ sig_reply_len = snprintf(sig_reply, sizeof(sig_reply), "T%2.2x%s%s",
+ signal_var, stop_reason, current_thread);
+
+ gdb_connection->ctrl_c = 0;
+ }
+
+ gdb_put_packet(connection, sig_reply, sig_reply_len);
+ gdb_connection->frontend_state = TARGET_HALTED;
+}
+
+static void gdb_fileio_reply(struct target *target, struct connection *connection)
+{
+ struct gdb_connection *gdb_connection = connection->priv;
+ char fileio_command[256];
+ int command_len;
+ bool program_exited = false;
+
+ if (strcmp(target->fileio_info->identifier, "open") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64 ",%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2,
+ target->fileio_info->param_3,
+ target->fileio_info->param_4);
+ else if (strcmp(target->fileio_info->identifier, "close") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1);
+ else if (strcmp(target->fileio_info->identifier, "read") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 ",%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2,
+ target->fileio_info->param_3);
+ else if (strcmp(target->fileio_info->identifier, "write") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 ",%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2,
+ target->fileio_info->param_3);
+ else if (strcmp(target->fileio_info->identifier, "lseek") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 ",%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2,
+ target->fileio_info->param_3);
+ else if (strcmp(target->fileio_info->identifier, "rename") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64 ",%" PRIx64 "/%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2,
+ target->fileio_info->param_3,
+ target->fileio_info->param_4);
+ else if (strcmp(target->fileio_info->identifier, "unlink") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2);
+ else if (strcmp(target->fileio_info->identifier, "stat") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2,
+ target->fileio_info->param_3);
+ else if (strcmp(target->fileio_info->identifier, "fstat") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2);
+ else if (strcmp(target->fileio_info->identifier, "gettimeofday") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2);
+ else if (strcmp(target->fileio_info->identifier, "isatty") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1);
+ else if (strcmp(target->fileio_info->identifier, "system") == 0)
+ sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64, target->fileio_info->identifier,
+ target->fileio_info->param_1,
+ target->fileio_info->param_2);
+ else if (strcmp(target->fileio_info->identifier, "exit") == 0) {
+ /* If target hits exit syscall, report to GDB the program is terminated.
+ * In addition, let target run its own exit syscall handler. */
+ program_exited = true;
+ sprintf(fileio_command, "W%02" PRIx64, target->fileio_info->param_1);
+ } else {
+ LOG_DEBUG("Unknown syscall: %s", target->fileio_info->identifier);
+
+ /* encounter unknown syscall, continue */
+ gdb_connection->frontend_state = TARGET_RUNNING;
+ target_resume(target, 1, 0x0, 0, 0);
+ return;
+ }
+
+ command_len = strlen(fileio_command);
+ gdb_put_packet(connection, fileio_command, command_len);
+
+ if (program_exited) {
+ /* Use target_resume() to let target run its own exit syscall handler. */
+ gdb_connection->frontend_state = TARGET_RUNNING;
+ target_resume(target, 1, 0x0, 0, 0);
+ } else {
+ gdb_connection->frontend_state = TARGET_HALTED;
+ rtos_update_threads(target);
+ }
+}
+
static void gdb_frontend_halted(struct target *target, struct connection *connection)
{
struct gdb_connection *gdb_connection = connection->priv;
* that are to be ignored.
*/
if (gdb_connection->frontend_state == TARGET_RUNNING) {
- char sig_reply[4];
- int signal_var;
-
/* stop forwarding log packets! */
log_remove_callback(gdb_log_callback, connection);
- if (gdb_connection->ctrl_c) {
- signal_var = 0x2;
- gdb_connection->ctrl_c = 0;
- } else
- signal_var = gdb_last_signal(target);
-
- snprintf(sig_reply, 4, "T%2.2x", signal_var);
- gdb_put_packet(connection, sig_reply, 3);
- gdb_connection->frontend_state = TARGET_HALTED;
- rtos_update_threads(target);
+ /* check fileio first */
+ if (target_get_gdb_fileio_info(target, target->fileio_info) == ERROR_OK)
+ gdb_fileio_reply(target, connection);
+ else
+ gdb_signal_reply(target, connection);
}
}
{
int retval;
struct connection *connection = priv;
+ struct gdb_service *gdb_service = connection->service->priv;
+
+ if (gdb_service->target != target)
+ return ERROR_OK;
- target_handle_event(target, event);
switch (event) {
case TARGET_EVENT_GDB_HALT:
gdb_frontend_halted(target, connection);
static int gdb_new_connection(struct connection *connection)
{
struct gdb_connection *gdb_connection = malloc(sizeof(struct gdb_connection));
- struct gdb_service *gdb_service = connection->service->priv;
+ struct target *target;
int retval;
int initial_ack;
+ target = get_target_from_connection(connection);
connection->priv = gdb_connection;
+ connection->cmd_ctx->current_target = target;
/* initialize gdb connection information */
gdb_connection->buf_p = gdb_connection->buffer;
gdb_connection->ctrl_c = 0;
gdb_connection->frontend_state = TARGET_HALTED;
gdb_connection->vflash_image = NULL;
- gdb_connection->closed = 0;
- gdb_connection->busy = 0;
+ gdb_connection->closed = false;
+ gdb_connection->busy = false;
gdb_connection->noack_mode = 0;
- gdb_connection->sync = true;
+ gdb_connection->sync = false;
gdb_connection->mem_write_error = false;
+ gdb_connection->attached = true;
+ gdb_connection->target_desc.tdesc = NULL;
+ gdb_connection->target_desc.tdesc_length = 0;
+ gdb_connection->thread_list = NULL;
/* send ACK to GDB for debug request */
gdb_write(connection, "+", 1);
* GDB session could leave dangling breakpoints if e.g. communication
* timed out.
*/
- breakpoint_clear_target(gdb_service->target);
- watchpoint_clear_target(gdb_service->target);
+ breakpoint_clear_target(target);
+ watchpoint_clear_target(target);
+
+ if (target->rtos) {
+ /* clean previous rtos session if supported*/
+ if (target->rtos->type->clean)
+ target->rtos->type->clean(target);
- /* clean previous rtos session if supported*/
- if ((gdb_service->target->rtos) && (gdb_service->target->rtos->type->clean))
- gdb_service->target->rtos->type->clean(gdb_service->target);
+ /* update threads */
+ rtos_update_threads(target);
+ }
/* remove the initial ACK from the incoming buffer */
retval = gdb_get_char(connection, &initial_ack);
*/
if (initial_ack != '+')
gdb_putback_char(connection, initial_ack);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_ATTACH);
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_ATTACH);
if (gdb_use_memory_map) {
/* Connect must fail if the memory map can't be set up correctly.
int i;
for (i = 0; i < flash_get_bank_count(); i++) {
struct flash_bank *p;
+ p = get_flash_bank_by_num_noprobe(i);
+ if (p->target != target)
+ continue;
retval = get_flash_bank_by_num(i, &p);
if (retval != ERROR_OK) {
LOG_ERROR("Connect failed. Consider setting up a gdb-attach event for the target " \
}
gdb_actual_connections++;
- LOG_DEBUG("New GDB Connection: %d, Target %s, state: %s",
+ log_printf_lf(all_targets->next != NULL ? LOG_LVL_INFO : LOG_LVL_DEBUG,
+ __FILE__, __LINE__, __func__,
+ "New GDB Connection: %d, Target %s, state: %s",
gdb_actual_connections,
- target_name(gdb_service->target),
- target_state_name(gdb_service->target));
+ target_name(target),
+ target_state_name(target));
/* DANGER! If we fail subsequently, we must remove this handler,
* otherwise we occasionally see crashes as the timer can invoke the
static int gdb_connection_closed(struct connection *connection)
{
- struct gdb_service *gdb_service = connection->service->priv;
+ struct target *target;
struct gdb_connection *gdb_connection = connection->priv;
+ target = get_target_from_connection(connection);
+
/* we're done forwarding messages. Tear down callback before
* cleaning up connection.
*/
gdb_actual_connections--;
LOG_DEBUG("GDB Close, Target: %s, state: %s, gdb_actual_connections=%d",
- target_name(gdb_service->target),
- target_state_name(gdb_service->target),
+ target_name(target),
+ target_state_name(target),
gdb_actual_connections);
/* see if an image built with vFlash commands is left */
}
/* if this connection registered a debug-message receiver delete it */
- delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
+ delete_debug_msg_receiver(connection->cmd_ctx, target);
if (connection->priv) {
free(connection->priv);
target_unregister_event_callback(gdb_target_callback_event_handler, connection);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_END);
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_END);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH);
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_DETACH);
return ERROR_OK;
}
}
static int gdb_last_signal_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
+ struct gdb_connection *gdb_con = connection->priv;
char sig_reply[4];
int signal_var;
+ if (!gdb_con->attached) {
+ /* if we are here we have received a kill packet
+ * reply W stop reply otherwise gdb gets very unhappy */
+ gdb_put_packet(connection, "W00", 3);
+ return ERROR_OK;
+ }
+
signal_var = gdb_last_signal(target);
snprintf(sig_reply, 4, "S%2.2x", signal_var);
return ERROR_OK;
}
-static int gdb_reg_pos(struct target *target, int pos, int len)
+static inline int gdb_reg_pos(struct target *target, int pos, int len)
{
if (target->endianness == TARGET_LITTLE_ENDIAN)
return pos;
for (i = 0; i < buf_len; i++) {
int j = gdb_reg_pos(target, i, buf_len);
- tstr[i*2] = DIGITS[(buf[j]>>4) & 0xf];
- tstr[i*2 + 1] = DIGITS[buf[j]&0xf];
+ tstr += sprintf(tstr, "%02x", buf[j]);
}
}
-static int hextoint(int c)
-{
- if (c >= '0' && c <= '9')
- return c - '0';
- c = toupper(c);
- if (c >= 'A' && c <= 'F')
- return c - 'A' + 10;
- LOG_ERROR("BUG: invalid register value %08x", c);
- return 0;
-}
-
/* copy over in register buffer */
static void gdb_target_to_reg(struct target *target,
- char *tstr, int str_len, uint8_t *bin)
+ char const *tstr, int str_len, uint8_t *bin)
{
if (str_len % 2) {
LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
int i;
for (i = 0; i < str_len; i += 2) {
- uint8_t t = hextoint(tstr[i]) << 4;
- t |= hextoint(tstr[i + 1]);
+ unsigned t;
+ if (sscanf(tstr + i, "%02x", &t) != 1) {
+ LOG_ERROR("BUG: unable to convert register value");
+ exit(-1);
+ }
int j = gdb_reg_pos(target, i/2, str_len/2);
bin[j] = t;
}
static int gdb_get_registers_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
struct reg **reg_list;
if ((target->rtos != NULL) && (ERROR_OK == rtos_get_gdb_reg_list(connection)))
return ERROR_OK;
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size);
+ retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
+ REG_CLASS_GENERAL);
if (retval != ERROR_OK)
return gdb_error(connection, retval);
assert(reg_packet_size > 0);
- reg_packet = malloc(reg_packet_size);
+ reg_packet = malloc(reg_packet_size + 1); /* plus one for string termination null */
+ if (reg_packet == NULL)
+ return ERROR_FAIL;
+
reg_packet_p = reg_packet;
for (i = 0; i < reg_list_size; i++) {
- if (!reg_list[i]->valid)
- reg_list[i]->type->get(reg_list[i]);
+ if (!reg_list[i]->valid) {
+ retval = reg_list[i]->type->get(reg_list[i]);
+ if (retval != ERROR_OK && gdb_report_register_access_error) {
+ LOG_DEBUG("Couldn't get register %s.", reg_list[i]->name);
+ free(reg_packet);
+ free(reg_list);
+ return gdb_error(connection, retval);
+ }
+ }
gdb_str_to_target(target, reg_packet_p, reg_list[i]);
reg_packet_p += DIV_ROUND_UP(reg_list[i]->size, 8) * 2;
}
}
static int gdb_set_registers_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
int i;
struct reg **reg_list;
int reg_list_size;
int retval;
- char *packet_p;
+ char const *packet_p;
#ifdef _DEBUG_GDB_IO_
LOG_DEBUG("-");
return ERROR_SERVER_REMOTE_CLOSED;
}
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size);
+ retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
+ REG_CLASS_GENERAL);
if (retval != ERROR_OK)
return gdb_error(connection, retval);
bin_buf = malloc(DIV_ROUND_UP(reg_list[i]->size, 8));
gdb_target_to_reg(target, packet_p, chars, bin_buf);
- reg_list[i]->type->set(reg_list[i], bin_buf);
+ retval = reg_list[i]->type->set(reg_list[i], bin_buf);
+ if (retval != ERROR_OK && gdb_report_register_access_error) {
+ LOG_DEBUG("Couldn't set register %s.", reg_list[i]->name);
+ free(reg_list);
+ free(bin_buf);
+ return gdb_error(connection, retval);
+ }
/* advance packet pointer */
packet_p += chars;
}
static int gdb_get_register_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
char *reg_packet;
LOG_DEBUG("-");
#endif
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size);
+ retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
+ REG_CLASS_ALL);
if (retval != ERROR_OK)
return gdb_error(connection, retval);
return ERROR_SERVER_REMOTE_CLOSED;
}
- if (!reg_list[reg_num]->valid)
- reg_list[reg_num]->type->get(reg_list[reg_num]);
+ if (!reg_list[reg_num]->valid) {
+ retval = reg_list[reg_num]->type->get(reg_list[reg_num]);
+ if (retval != ERROR_OK && gdb_report_register_access_error) {
+ LOG_DEBUG("Couldn't get register %s.", reg_list[reg_num]->name);
+ free(reg_list);
+ return gdb_error(connection, retval);
+ }
+ }
- reg_packet = malloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2);
+ reg_packet = malloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2 + 1); /* plus one for string termination null */
gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
}
static int gdb_set_register_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
char *separator;
LOG_DEBUG("-");
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size);
+ retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
+ REG_CLASS_ALL);
if (retval != ERROR_OK)
return gdb_error(connection, retval);
gdb_target_to_reg(target, separator + 1, chars, bin_buf);
- reg_list[reg_num]->type->set(reg_list[reg_num], bin_buf);
+ retval = reg_list[reg_num]->type->set(reg_list[reg_num], bin_buf);
+ if (retval != ERROR_OK && gdb_report_register_access_error) {
+ LOG_DEBUG("Couldn't set register %s.", reg_list[reg_num]->name);
+ free(bin_buf);
+ free(reg_list);
+ return gdb_error(connection, retval);
+ }
gdb_put_packet(connection, "OK", 2);
* 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
*/
static int gdb_read_memory_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
char *separator;
- uint32_t addr = 0;
+ uint64_t addr = 0;
uint32_t len = 0;
uint8_t *buffer;
/* skip command character */
packet++;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete read memory packet received, dropping connection");
len = strtoul(separator + 1, NULL, 16);
+ if (!len) {
+ LOG_WARNING("invalid read memory packet received (len == 0)");
+ gdb_put_packet(connection, NULL, 0);
+ return ERROR_OK;
+ }
+
buffer = malloc(len);
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
+ LOG_DEBUG("addr: 0x%16.16" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
retval = target_read_buffer(target, addr, len, buffer);
if (retval == ERROR_OK) {
hex_buffer = malloc(len * 2 + 1);
- uint32_t i;
- for (i = 0; i < len; i++) {
- uint8_t t = buffer[i];
- hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
- hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
- }
+ size_t pkt_len = hexify(hex_buffer, buffer, len, len * 2 + 1);
- gdb_put_packet(connection, hex_buffer, len * 2);
+ gdb_put_packet(connection, hex_buffer, pkt_len);
free(hex_buffer);
} else
}
static int gdb_write_memory_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
char *separator;
- uint32_t addr = 0;
+ uint64_t addr = 0;
uint32_t len = 0;
uint8_t *buffer;
-
- uint32_t i;
int retval;
/* skip command character */
packet++;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete write memory packet received, dropping connection");
buffer = malloc(len);
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
+ LOG_DEBUG("addr: 0x%" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
- for (i = 0; i < len; i++) {
- uint32_t tmp;
- sscanf(separator + 2*i, "%2" SCNx32, &tmp);
- buffer[i] = tmp;
- }
+ if (unhexify(buffer, separator, len) != len)
+ LOG_ERROR("unable to decode memory packet");
retval = target_write_buffer(target, addr, len, buffer);
}
static int gdb_write_memory_binary_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
char *separator;
- uint32_t addr = 0;
+ uint64_t addr = 0;
uint32_t len = 0;
int retval = ERROR_OK;
+ /* Packets larger than fast_limit bytes will be acknowledged instantly on
+ * the assumption that we're in a download and it's important to go as fast
+ * as possible. */
+ uint32_t fast_limit = 8;
/* skip command character */
packet++;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete write memory binary packet received, dropping connection");
struct gdb_connection *gdb_connection = connection->priv;
- if (gdb_connection->mem_write_error) {
+ if (gdb_connection->mem_write_error)
retval = ERROR_FAIL;
- /* now that we have reported the memory write error, we can clear the condition */
- gdb_connection->mem_write_error = false;
- }
- /* By replying the packet *immediately* GDB will send us a new packet
- * while we write the last one to the target.
- */
- if (retval == ERROR_OK)
- gdb_put_packet(connection, "OK", 2);
- else {
+ if (retval == ERROR_OK) {
+ if (len >= fast_limit) {
+ /* By replying the packet *immediately* GDB will send us a new packet
+ * while we write the last one to the target.
+ * We only do this for larger writes, so that users who do something like:
+ * p *((int*)0xdeadbeef)=8675309
+ * will get immediate feedback that that write failed.
+ */
+ gdb_put_packet(connection, "OK", 2);
+ }
+ } else {
retval = gdb_error(connection, retval);
+ /* now that we have reported the memory write error, we can clear the condition */
+ gdb_connection->mem_write_error = false;
if (retval != ERROR_OK)
return retval;
}
if (len) {
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
+ LOG_DEBUG("addr: 0x%" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
retval = target_write_buffer(target, addr, len, (uint8_t *)separator);
if (retval != ERROR_OK)
gdb_connection->mem_write_error = true;
}
+ if (len < fast_limit) {
+ if (retval != ERROR_OK) {
+ gdb_error(connection, retval);
+ gdb_connection->mem_write_error = false;
+ } else {
+ gdb_put_packet(connection, "OK", 2);
+ }
+ }
+
return ERROR_OK;
}
static int gdb_step_continue_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
int current = 0;
- uint32_t address = 0x0;
+ uint64_t address = 0x0;
int retval = ERROR_OK;
LOG_DEBUG("-");
- if (packet_size > 1) {
- packet[packet_size] = 0;
- address = strtoul(packet + 1, NULL, 16);
- } else
+ if (packet_size > 1)
+ address = strtoull(packet + 1, NULL, 16);
+ else
current = 1;
+ gdb_running_type = packet[0];
if (packet[0] == 'c') {
LOG_DEBUG("continue");
/* resume at current address, don't handle breakpoints, not debugging */
}
static int gdb_breakpoint_watchpoint_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct target *target = get_target_from_connection(connection);
int type;
enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
enum watchpoint_rw wp_type = WPT_READ /* dummy init to avoid warning */;
- uint32_t address;
+ uint64_t address;
uint32_t size;
char *separator;
int retval;
return ERROR_SERVER_REMOTE_CLOSED;
}
- address = strtoul(separator + 1, &separator, 16);
+ address = strtoull(separator + 1, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
}
}
-static int decode_xfer_read(char *buf, char **annex, int *ofs, unsigned int *len)
+static int decode_xfer_read(char const *buf, char **annex, int *ofs, unsigned int *len)
{
- char *separator;
-
- /* Extract and NUL-terminate the annex. */
- *annex = buf;
- while (*buf && *buf != ':')
- buf++;
- if (*buf == '\0')
- return -1;
- *buf++ = 0;
+ /* Locate the annex. */
+ const char *annex_end = strchr(buf, ':');
+ if (annex_end == NULL)
+ return ERROR_FAIL;
/* After the read marker and annex, qXfer looks like a
* traditional 'm' packet. */
-
- *ofs = strtoul(buf, &separator, 16);
+ char *separator;
+ *ofs = strtoul(annex_end + 1, &separator, 16);
if (*separator != ',')
- return -1;
+ return ERROR_FAIL;
*len = strtoul(separator + 1, NULL, 16);
- return 0;
+ /* Extract the annex if needed */
+ if (annex != NULL) {
+ *annex = strndup(buf, annex_end - buf);
+ if (*annex == NULL)
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
}
static int compare_bank(const void *a, const void *b)
}
static int gdb_memory_map(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
/* We get away with only specifying flash here. Regions that are not
* specified are treated as if we provided no memory map(if not we
int offset;
int length;
char *separator;
- uint32_t ram_start = 0;
+ target_addr_t ram_start = 0;
int i;
int target_flash_banks = 0;
/* Sort banks in ascending order. We need to report non-flash
* memory as ram (or rather read/write) by default for GDB, since
* it has no concept of non-cacheable read/write memory (i/o etc).
- *
- * FIXME Most non-flash addresses are *NOT* RAM! Don't lie.
- * Current versions of GDB assume unlisted addresses are RAM...
*/
banks = malloc(sizeof(struct flash_bank *)*flash_get_bank_count());
for (i = 0; i < flash_get_bank_count(); i++) {
+ p = get_flash_bank_by_num_noprobe(i);
+ if (p->target != target)
+ continue;
retval = get_flash_bank_by_num(i, &p);
if (retval != ERROR_OK) {
free(banks);
gdb_error(connection, retval);
return retval;
}
- if (p->target == target)
- banks[target_flash_banks++] = p;
+ banks[target_flash_banks++] = p;
}
qsort(banks, target_flash_banks, sizeof(struct flash_bank *),
for (i = 0; i < target_flash_banks; i++) {
int j;
unsigned sector_size = 0;
- uint32_t start;
+ unsigned group_len = 0;
p = banks[i];
- start = p->base;
if (ram_start < p->base)
xml_printf(&retval, &xml, &pos, &size,
- "<memory type=\"ram\" start=\"0x%x\" "
+ "<memory type=\"ram\" start=\"" TARGET_ADDR_FMT "\" "
"length=\"0x%x\"/>\n",
ram_start, p->base - ram_start);
* regions with 8KB, 32KB, and 64KB sectors; etc.
*/
for (j = 0; j < p->num_sectors; j++) {
- unsigned group_len;
/* Maybe start a new group of sectors. */
if (sector_size == 0) {
+ if (p->sectors[j].offset + p->sectors[j].size > p->size) {
+ LOG_WARNING("The flash sector at offset 0x%08" PRIx32
+ " overflows the end of %s bank.",
+ p->sectors[j].offset, p->name);
+ LOG_WARNING("The rest of bank will not show in gdb memory map.");
+ break;
+ }
+ target_addr_t start;
start = p->base + p->sectors[j].offset;
xml_printf(&retval, &xml, &pos, &size,
"<memory type=\"flash\" "
- "start=\"0x%x\" ",
+ "start=\"" TARGET_ADDR_FMT "\" ",
start);
sector_size = p->sectors[j].size;
+ group_len = sector_size;
+ } else {
+ group_len += sector_size; /* equal to p->sectors[j].size */
}
/* Does this finish a group of sectors?
* If not, continue an already-started group.
*/
- if (j == p->num_sectors - 1)
- group_len = (p->base + p->size) - start;
- else if (p->sectors[j + 1].size != sector_size)
- group_len = p->base + p->sectors[j + 1].offset
- - start;
- else
+ if (j < p->num_sectors - 1
+ && p->sectors[j + 1].size == sector_size
+ && p->sectors[j + 1].offset == p->sectors[j].offset + sector_size
+ && p->sectors[j + 1].offset + p->sectors[j + 1].size <= p->size)
continue;
xml_printf(&retval, &xml, &pos, &size,
if (ram_start != 0)
xml_printf(&retval, &xml, &pos, &size,
- "<memory type=\"ram\" start=\"0x%x\" "
+ "<memory type=\"ram\" start=\"" TARGET_ADDR_FMT "\" "
"length=\"0x%x\"/>\n",
ram_start, 0-ram_start);
/* ELSE a flash chip could be at the very end of the 32 bit address
*/
free(banks);
- banks = NULL;
xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
if (retval != ERROR_OK) {
+ free(xml);
gdb_error(connection, retval);
return retval;
}
return ERROR_OK;
}
+static const char *gdb_get_reg_type_name(enum reg_type type)
+{
+ switch (type) {
+ case REG_TYPE_BOOL:
+ return "bool";
+ case REG_TYPE_INT:
+ return "int";
+ case REG_TYPE_INT8:
+ return "int8";
+ case REG_TYPE_INT16:
+ return "int16";
+ case REG_TYPE_INT32:
+ return "int32";
+ case REG_TYPE_INT64:
+ return "int64";
+ case REG_TYPE_INT128:
+ return "int128";
+ case REG_TYPE_UINT:
+ return "uint";
+ case REG_TYPE_UINT8:
+ return "uint8";
+ case REG_TYPE_UINT16:
+ return "uint16";
+ case REG_TYPE_UINT32:
+ return "uint32";
+ case REG_TYPE_UINT64:
+ return "uint64";
+ case REG_TYPE_UINT128:
+ return "uint128";
+ case REG_TYPE_CODE_PTR:
+ return "code_ptr";
+ case REG_TYPE_DATA_PTR:
+ return "data_ptr";
+ case REG_TYPE_FLOAT:
+ return "float";
+ case REG_TYPE_IEEE_SINGLE:
+ return "ieee_single";
+ case REG_TYPE_IEEE_DOUBLE:
+ return "ieee_double";
+ case REG_TYPE_ARCH_DEFINED:
+ return "int"; /* return arbitrary string to avoid compile warning. */
+ }
+
+ return "int"; /* "int" as default value */
+}
+
+static int lookup_add_arch_defined_types(char const **arch_defined_types_list[], const char *type_id,
+ int *num_arch_defined_types)
+{
+ int tbl_sz = *num_arch_defined_types;
+
+ if (type_id != NULL && (strcmp(type_id, ""))) {
+ for (int j = 0; j < (tbl_sz + 1); j++) {
+ if (!((*arch_defined_types_list)[j])) {
+ (*arch_defined_types_list)[tbl_sz++] = type_id;
+ *arch_defined_types_list = realloc(*arch_defined_types_list,
+ sizeof(char *) * (tbl_sz + 1));
+ (*arch_defined_types_list)[tbl_sz] = NULL;
+ *num_arch_defined_types = tbl_sz;
+ return 1;
+ } else {
+ if (!strcmp((*arch_defined_types_list)[j], type_id))
+ return 0;
+ }
+ }
+ }
+
+ return -1;
+}
+
+static int gdb_generate_reg_type_description(struct target *target,
+ char **tdesc, int *pos, int *size, struct reg_data_type *type,
+ char const **arch_defined_types_list[], int * num_arch_defined_types)
+{
+ int retval = ERROR_OK;
+
+ if (type->type_class == REG_TYPE_CLASS_VECTOR) {
+ struct reg_data_type *data_type = type->reg_type_vector->type;
+ if (data_type->type == REG_TYPE_ARCH_DEFINED) {
+ if (lookup_add_arch_defined_types(arch_defined_types_list, data_type->id,
+ num_arch_defined_types))
+ gdb_generate_reg_type_description(target, tdesc, pos, size, data_type,
+ arch_defined_types_list,
+ num_arch_defined_types);
+ }
+ /* <vector id="id" type="type" count="count"/> */
+ xml_printf(&retval, tdesc, pos, size,
+ "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>\n",
+ type->id, type->reg_type_vector->type->id,
+ type->reg_type_vector->count);
+
+ } else if (type->type_class == REG_TYPE_CLASS_UNION) {
+ struct reg_data_type_union_field *field;
+ field = type->reg_type_union->fields;
+ while (field != NULL) {
+ struct reg_data_type *data_type = field->type;
+ if (data_type->type == REG_TYPE_ARCH_DEFINED) {
+ if (lookup_add_arch_defined_types(arch_defined_types_list, data_type->id,
+ num_arch_defined_types))
+ gdb_generate_reg_type_description(target, tdesc, pos, size, data_type,
+ arch_defined_types_list,
+ num_arch_defined_types);
+ }
+
+ field = field->next;
+ }
+ /* <union id="id">
+ * <field name="name" type="type"/> ...
+ * </union> */
+ xml_printf(&retval, tdesc, pos, size,
+ "<union id=\"%s\">\n",
+ type->id);
+
+ field = type->reg_type_union->fields;
+ while (field != NULL) {
+ xml_printf(&retval, tdesc, pos, size,
+ "<field name=\"%s\" type=\"%s\"/>\n",
+ field->name, field->type->id);
+
+ field = field->next;
+ }
+
+ xml_printf(&retval, tdesc, pos, size,
+ "</union>\n");
+
+ } else if (type->type_class == REG_TYPE_CLASS_STRUCT) {
+ struct reg_data_type_struct_field *field;
+ field = type->reg_type_struct->fields;
+
+ if (field->use_bitfields) {
+ /* <struct id="id" size="size">
+ * <field name="name" start="start" end="end"/> ...
+ * </struct> */
+ xml_printf(&retval, tdesc, pos, size,
+ "<struct id=\"%s\" size=\"%d\">\n",
+ type->id, type->reg_type_struct->size);
+ while (field != NULL) {
+ xml_printf(&retval, tdesc, pos, size,
+ "<field name=\"%s\" start=\"%d\" end=\"%d\" type=\"%s\" />\n",
+ field->name, field->bitfield->start, field->bitfield->end,
+ gdb_get_reg_type_name(field->bitfield->type));
+
+ field = field->next;
+ }
+ } else {
+ while (field != NULL) {
+ struct reg_data_type *data_type = field->type;
+ if (data_type->type == REG_TYPE_ARCH_DEFINED) {
+ if (lookup_add_arch_defined_types(arch_defined_types_list, data_type->id,
+ num_arch_defined_types))
+ gdb_generate_reg_type_description(target, tdesc, pos, size, data_type,
+ arch_defined_types_list,
+ num_arch_defined_types);
+ }
+ }
+
+ /* <struct id="id">
+ * <field name="name" type="type"/> ...
+ * </struct> */
+ xml_printf(&retval, tdesc, pos, size,
+ "<struct id=\"%s\">\n",
+ type->id);
+ while (field != NULL) {
+ xml_printf(&retval, tdesc, pos, size,
+ "<field name=\"%s\" type=\"%s\"/>\n",
+ field->name, field->type->id);
+
+ field = field->next;
+ }
+ }
+
+ xml_printf(&retval, tdesc, pos, size,
+ "</struct>\n");
+
+ } else if (type->type_class == REG_TYPE_CLASS_FLAGS) {
+ /* <flags id="id" size="size">
+ * <field name="name" start="start" end="end"/> ...
+ * </flags> */
+ xml_printf(&retval, tdesc, pos, size,
+ "<flags id=\"%s\" size=\"%d\">\n",
+ type->id, type->reg_type_flags->size);
+
+ struct reg_data_type_flags_field *field;
+ field = type->reg_type_flags->fields;
+ while (field != NULL) {
+ xml_printf(&retval, tdesc, pos, size,
+ "<field name=\"%s\" start=\"%d\" end=\"%d\" type=\"%s\" />\n",
+ field->name, field->bitfield->start, field->bitfield->end,
+ gdb_get_reg_type_name(field->bitfield->type));
+
+ field = field->next;
+ }
+
+ xml_printf(&retval, tdesc, pos, size,
+ "</flags>\n");
+
+ }
+
+ return ERROR_OK;
+}
+
+/* Get a list of available target registers features. feature_list must
+ * be freed by caller.
+ */
+static int get_reg_features_list(struct target *target, char const **feature_list[], int *feature_list_size,
+ struct reg **reg_list, int reg_list_size)
+{
+ int tbl_sz = 0;
+
+ /* Start with only one element */
+ *feature_list = calloc(1, sizeof(char *));
+
+ for (int i = 0; i < reg_list_size; i++) {
+ if (reg_list[i]->exist == false)
+ continue;
+
+ if (reg_list[i]->feature != NULL
+ && reg_list[i]->feature->name != NULL
+ && (strcmp(reg_list[i]->feature->name, ""))) {
+ /* We found a feature, check if the feature is already in the
+ * table. If not, allocate a new entry for the table and
+ * put the new feature in it.
+ */
+ for (int j = 0; j < (tbl_sz + 1); j++) {
+ if (!((*feature_list)[j])) {
+ (*feature_list)[tbl_sz++] = reg_list[i]->feature->name;
+ *feature_list = realloc(*feature_list, sizeof(char *) * (tbl_sz + 1));
+ (*feature_list)[tbl_sz] = NULL;
+ break;
+ } else {
+ if (!strcmp((*feature_list)[j], reg_list[i]->feature->name))
+ break;
+ }
+ }
+ }
+ }
+
+ if (feature_list_size)
+ *feature_list_size = tbl_sz;
+
+ return ERROR_OK;
+}
+
+static int gdb_generate_target_description(struct target *target, char **tdesc_out)
+{
+ int retval = ERROR_OK;
+ struct reg **reg_list = NULL;
+ int reg_list_size;
+ char const **features = NULL;
+ char const **arch_defined_types = NULL;
+ int feature_list_size = 0;
+ int num_arch_defined_types = 0;
+ char *tdesc = NULL;
+ int pos = 0;
+ int size = 0;
+
+ arch_defined_types = calloc(1, sizeof(char *));
+
+ retval = target_get_gdb_reg_list(target, ®_list,
+ ®_list_size, REG_CLASS_ALL);
+
+ if (retval != ERROR_OK) {
+ LOG_ERROR("get register list failed");
+ retval = ERROR_FAIL;
+ goto error;
+ }
+
+ if (reg_list_size <= 0) {
+ LOG_ERROR("get register list failed");
+ retval = ERROR_FAIL;
+ goto error;
+ }
+
+ /* Get a list of available target registers features */
+ retval = get_reg_features_list(target, &features, &feature_list_size, reg_list, reg_list_size);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Can't get the registers feature list");
+ retval = ERROR_FAIL;
+ goto error;
+ }
+
+ /* If we found some features associated with registers, create sections */
+ int current_feature = 0;
+
+ xml_printf(&retval, &tdesc, &pos, &size,
+ "<?xml version=\"1.0\"?>\n"
+ "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n"
+ "<target version=\"1.0\">\n");
+
+ /* generate target description according to register list */
+ if (features != NULL) {
+ while (features[current_feature]) {
+
+ xml_printf(&retval, &tdesc, &pos, &size,
+ "<feature name=\"%s\">\n",
+ features[current_feature]);
+
+ int i;
+ for (i = 0; i < reg_list_size; i++) {
+
+ if (reg_list[i]->exist == false)
+ continue;
+
+ if (strcmp(reg_list[i]->feature->name, features[current_feature]))
+ continue;
+
+ const char *type_str;
+ if (reg_list[i]->reg_data_type != NULL) {
+ if (reg_list[i]->reg_data_type->type == REG_TYPE_ARCH_DEFINED) {
+ /* generate <type... first, if there are architecture-defined types. */
+ if (lookup_add_arch_defined_types(&arch_defined_types,
+ reg_list[i]->reg_data_type->id,
+ &num_arch_defined_types))
+ gdb_generate_reg_type_description(target, &tdesc, &pos, &size,
+ reg_list[i]->reg_data_type,
+ &arch_defined_types,
+ &num_arch_defined_types);
+
+ type_str = reg_list[i]->reg_data_type->id;
+ } else {
+ /* predefined type */
+ type_str = gdb_get_reg_type_name(
+ reg_list[i]->reg_data_type->type);
+ }
+ } else {
+ /* Default type is "int" */
+ type_str = "int";
+ }
+
+ xml_printf(&retval, &tdesc, &pos, &size,
+ "<reg name=\"%s\"", reg_list[i]->name);
+ xml_printf(&retval, &tdesc, &pos, &size,
+ " bitsize=\"%d\"", reg_list[i]->size);
+ xml_printf(&retval, &tdesc, &pos, &size,
+ " regnum=\"%d\"", reg_list[i]->number);
+ if (reg_list[i]->caller_save)
+ xml_printf(&retval, &tdesc, &pos, &size,
+ " save-restore=\"yes\"");
+ else
+ xml_printf(&retval, &tdesc, &pos, &size,
+ " save-restore=\"no\"");
+
+ xml_printf(&retval, &tdesc, &pos, &size,
+ " type=\"%s\"", type_str);
+
+ if (reg_list[i]->group != NULL)
+ xml_printf(&retval, &tdesc, &pos, &size,
+ " group=\"%s\"", reg_list[i]->group);
+
+ xml_printf(&retval, &tdesc, &pos, &size,
+ "/>\n");
+ }
+
+ xml_printf(&retval, &tdesc, &pos, &size,
+ "</feature>\n");
+
+ current_feature++;
+ }
+ }
+
+ xml_printf(&retval, &tdesc, &pos, &size,
+ "</target>\n");
+
+error:
+ free(features);
+ free(reg_list);
+ free(arch_defined_types);
+
+ if (retval == ERROR_OK)
+ *tdesc_out = tdesc;
+ else
+ free(tdesc);
+
+ return retval;
+}
+
+static int gdb_get_target_description_chunk(struct target *target, struct target_desc_format *target_desc,
+ char **chunk, int32_t offset, uint32_t length)
+{
+ if (target_desc == NULL) {
+ LOG_ERROR("Unable to Generate Target Description");
+ return ERROR_FAIL;
+ }
+
+ char *tdesc = target_desc->tdesc;
+ uint32_t tdesc_length = target_desc->tdesc_length;
+
+ if (tdesc == NULL) {
+ int retval = gdb_generate_target_description(target, &tdesc);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Unable to Generate Target Description");
+ return ERROR_FAIL;
+ }
+
+ tdesc_length = strlen(tdesc);
+ }
+
+ char transfer_type;
+
+ if (length < (tdesc_length - offset))
+ transfer_type = 'm';
+ else
+ transfer_type = 'l';
+
+ *chunk = malloc(length + 2);
+ if (*chunk == NULL) {
+ LOG_ERROR("Unable to allocate memory");
+ return ERROR_FAIL;
+ }
+
+ (*chunk)[0] = transfer_type;
+ if (transfer_type == 'm') {
+ strncpy((*chunk) + 1, tdesc + offset, length);
+ (*chunk)[1 + length] = '\0';
+ } else {
+ strncpy((*chunk) + 1, tdesc + offset, tdesc_length - offset);
+ (*chunk)[1 + (tdesc_length - offset)] = '\0';
+
+ /* After gdb-server sends out last chunk, invalidate tdesc. */
+ free(tdesc);
+ tdesc = NULL;
+ tdesc_length = 0;
+ }
+
+ target_desc->tdesc = tdesc;
+ target_desc->tdesc_length = tdesc_length;
+
+ return ERROR_OK;
+}
+
+static int gdb_target_description_supported(struct target *target, int *supported)
+{
+ int retval = ERROR_OK;
+ struct reg **reg_list = NULL;
+ int reg_list_size = 0;
+ char const **features = NULL;
+ int feature_list_size = 0;
+
+ retval = target_get_gdb_reg_list(target, ®_list,
+ ®_list_size, REG_CLASS_ALL);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("get register list failed");
+ goto error;
+ }
+
+ if (reg_list_size <= 0) {
+ LOG_ERROR("get register list failed");
+ retval = ERROR_FAIL;
+ goto error;
+ }
+
+ /* Get a list of available target registers features */
+ retval = get_reg_features_list(target, &features, &feature_list_size, reg_list, reg_list_size);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Can't get the registers feature list");
+ goto error;
+ }
+
+ if (supported) {
+ if (feature_list_size)
+ *supported = 1;
+ else
+ *supported = 0;
+ }
+
+error:
+ free(features);
+
+ free(reg_list);
+
+ return retval;
+}
+
+static int gdb_generate_thread_list(struct target *target, char **thread_list_out)
+{
+ struct rtos *rtos = target->rtos;
+ int retval = ERROR_OK;
+ char *thread_list = NULL;
+ int pos = 0;
+ int size = 0;
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "<?xml version=\"1.0\"?>\n"
+ "<threads>\n");
+
+ if (rtos != NULL) {
+ for (int i = 0; i < rtos->thread_count; i++) {
+ struct thread_detail *thread_detail = &rtos->thread_details[i];
+
+ if (!thread_detail->exists)
+ continue;
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "<thread id=\"%" PRIx64 "\">", thread_detail->threadid);
+
+ if (thread_detail->thread_name_str != NULL)
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "Name: %s", thread_detail->thread_name_str);
+
+ if (thread_detail->extra_info_str != NULL) {
+ if (thread_detail->thread_name_str != NULL)
+ xml_printf(&retval, &thread_list, &pos, &size,
+ ", ");
+ xml_printf(&retval, &thread_list, &pos, &size,
+ thread_detail->extra_info_str);
+ }
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "</thread>\n");
+ }
+ }
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "</threads>\n");
+
+ if (retval == ERROR_OK)
+ *thread_list_out = thread_list;
+ else
+ free(thread_list);
+
+ return retval;
+}
+
+static int gdb_get_thread_list_chunk(struct target *target, char **thread_list,
+ char **chunk, int32_t offset, uint32_t length)
+{
+ if (*thread_list == NULL) {
+ int retval = gdb_generate_thread_list(target, thread_list);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Unable to Generate Thread List");
+ return ERROR_FAIL;
+ }
+ }
+
+ size_t thread_list_length = strlen(*thread_list);
+ char transfer_type;
+
+ length = MIN(length, thread_list_length - offset);
+ if (length < (thread_list_length - offset))
+ transfer_type = 'm';
+ else
+ transfer_type = 'l';
+
+ *chunk = malloc(length + 2 + 3);
+ /* Allocating extra 3 bytes prevents false positive valgrind report
+ * of strlen(chunk) word access:
+ * Invalid read of size 4
+ * Address 0x4479934 is 44 bytes inside a block of size 45 alloc'd */
+ if (*chunk == NULL) {
+ LOG_ERROR("Unable to allocate memory");
+ return ERROR_FAIL;
+ }
+
+ (*chunk)[0] = transfer_type;
+ strncpy((*chunk) + 1, (*thread_list) + offset, length);
+ (*chunk)[1 + length] = '\0';
+
+ /* After gdb-server sends out last chunk, invalidate thread list. */
+ if (transfer_type == 'l') {
+ free(*thread_list);
+ *thread_list = NULL;
+ }
+
+ return ERROR_OK;
+}
+
static int gdb_query_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct command_context *cmd_ctx = connection->cmd_ctx;
struct gdb_connection *gdb_connection = connection->priv;
struct target *target = get_target_from_connection(connection);
- if (strstr(packet, "qRcmd,")) {
+ if (strncmp(packet, "qRcmd,", 6) == 0) {
if (packet_size > 6) {
char *cmd;
- int i;
- cmd = malloc((packet_size - 6)/2 + 1);
- for (i = 0; i < (packet_size - 6)/2; i++) {
- uint32_t tmp;
- sscanf(packet + 6 + 2*i, "%2" SCNx32, &tmp);
- cmd[i] = tmp;
- }
- cmd[(packet_size - 6)/2] = 0x0;
+ cmd = malloc((packet_size - 6) / 2 + 1);
+ size_t len = unhexify((uint8_t *)cmd, packet + 6, (packet_size - 6) / 2);
+ cmd[len] = 0;
/* We want to print all debug output to GDB connection */
log_add_callback(gdb_log_callback, connection);
}
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
- } else if (strstr(packet, "qCRC:")) {
+ } else if (strncmp(packet, "qCRC:", 5) == 0) {
if (packet_size > 5) {
int retval;
char gdb_reply[10];
char *separator;
uint32_t checksum;
- uint32_t addr = 0;
+ target_addr_t addr = 0;
uint32_t len = 0;
/* skip command character */
packet += 5;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete read memory packet received, dropping connection");
return ERROR_OK;
}
- } else if (strstr(packet, "qSupported")) {
+ } else if (strncmp(packet, "qSupported", 10) == 0) {
/* we currently support packet size and qXfer:memory-map:read (if enabled)
- * disable qXfer:features:read for the moment */
+ * qXfer:features:read is supported for some targets */
int retval = ERROR_OK;
char *buffer = NULL;
int pos = 0;
int size = 0;
+ int gdb_target_desc_supported = 0;
+
+ /* we need to test that the target supports target descriptions */
+ retval = gdb_target_description_supported(target, &gdb_target_desc_supported);
+ if (retval != ERROR_OK) {
+ LOG_INFO("Failed detecting Target Description Support, disabling");
+ gdb_target_desc_supported = 0;
+ }
+
+ /* support may be disabled globally */
+ if (gdb_use_target_description == 0) {
+ if (gdb_target_desc_supported)
+ LOG_WARNING("Target Descriptions Supported, but disabled");
+ gdb_target_desc_supported = 0;
+ }
xml_printf(&retval,
&buffer,
&pos,
&size,
- "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
+ "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;qXfer:threads:read+;QStartNoAckMode+;vContSupported+",
(GDB_BUFFER_SIZE - 1),
- ((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-');
+ ((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
+ (gdb_target_desc_supported == 1) ? '+' : '-');
if (retval != ERROR_OK) {
gdb_send_error(connection, 01);
free(buffer);
return ERROR_OK;
- } else if (strstr(packet, "qXfer:memory-map:read::")
+ } else if ((strncmp(packet, "qXfer:memory-map:read::", 23) == 0)
&& (flash_get_bank_count() > 0))
return gdb_memory_map(connection, packet, packet_size);
- else if (strstr(packet, "qXfer:features:read:")) {
+ else if (strncmp(packet, "qXfer:features:read:", 20) == 0) {
char *xml = NULL;
- int size = 0;
- int pos = 0;
int retval = ERROR_OK;
int offset;
unsigned int length;
- char *annex;
/* skip command character */
packet += 20;
- if (decode_xfer_read(packet, &annex, &offset, &length) < 0) {
+ if (decode_xfer_read(packet, NULL, &offset, &length) < 0) {
gdb_send_error(connection, 01);
return ERROR_OK;
}
- if (strcmp(annex, "target.xml") != 0) {
+ /* Target should prepare correct target description for annex.
+ * The first character of returned xml is 'm' or 'l'. 'm' for
+ * there are *more* chunks to transfer. 'l' for it is the *last*
+ * chunk of target description.
+ */
+ retval = gdb_get_target_description_chunk(target, &gdb_connection->target_desc,
+ &xml, offset, length);
+ if (retval != ERROR_OK) {
+ gdb_error(connection, retval);
+ return retval;
+ }
+
+ gdb_put_packet(connection, xml, strlen(xml));
+
+ free(xml);
+ return ERROR_OK;
+ } else if (strncmp(packet, "qXfer:threads:read:", 19) == 0) {
+ char *xml = NULL;
+ int retval = ERROR_OK;
+
+ int offset;
+ unsigned int length;
+
+ /* skip command character */
+ packet += 19;
+
+ if (decode_xfer_read(packet, NULL, &offset, &length) < 0) {
gdb_send_error(connection, 01);
return ERROR_OK;
}
- xml_printf(&retval,
- &xml,
- &pos,
- &size, \
- "l < target version=\"1.0\">\n < architecture > arm</architecture>\n</target>\n");
-
+ /* Target should prepare correct thread list for annex.
+ * The first character of returned xml is 'm' or 'l'. 'm' for
+ * there are *more* chunks to transfer. 'l' for it is the *last*
+ * chunk of target description.
+ */
+ retval = gdb_get_thread_list_chunk(target, &gdb_connection->thread_list,
+ &xml, offset, length);
if (retval != ERROR_OK) {
gdb_error(connection, retval);
return retval;
free(xml);
return ERROR_OK;
- } else if (strstr(packet, "QStartNoAckMode")) {
+ } else if (strncmp(packet, "QStartNoAckMode", 15) == 0) {
gdb_connection->noack_mode = 1;
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
return ERROR_OK;
}
+static bool gdb_handle_vcont_packet(struct connection *connection, const char *packet, int packet_size)
+{
+ struct gdb_connection *gdb_connection = connection->priv;
+ struct target *target = get_target_from_connection(connection);
+ const char *parse = packet;
+ int retval;
+
+ /* query for vCont supported */
+ if (parse[0] == '?') {
+ if (target->type->step != NULL) {
+ /* gdb doesn't accept c without C and s without S */
+ gdb_put_packet(connection, "vCont;c;C;s;S", 13);
+ return true;
+ }
+ return false;
+ }
+
+ if (parse[0] == ';') {
+ ++parse;
+ --packet_size;
+ }
+
+ /* simple case, a continue packet */
+ if (parse[0] == 'c') {
+ gdb_running_type = 'c';
+ LOG_DEBUG("target %s continue", target_name(target));
+ log_add_callback(gdb_log_callback, connection);
+ retval = target_resume(target, 1, 0, 0, 0);
+ if (retval == ERROR_TARGET_NOT_HALTED)
+ LOG_INFO("target %s was not halted when resume was requested", target_name(target));
+
+ /* poll target in an attempt to make its internal state consistent */
+ if (retval != ERROR_OK) {
+ retval = target_poll(target);
+ if (retval != ERROR_OK)
+ LOG_DEBUG("error polling target %s after failed resume", target_name(target));
+ }
+
+ /*
+ * We don't report errors to gdb here, move frontend_state to
+ * TARGET_RUNNING to stay in sync with gdb's expectation of the
+ * target state
+ */
+ gdb_connection->frontend_state = TARGET_RUNNING;
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_START);
+
+ return true;
+ }
+
+ /* single-step or step-over-breakpoint */
+ if (parse[0] == 's') {
+ gdb_running_type = 's';
+ bool fake_step = false;
+
+ if (strncmp(parse, "s:", 2) == 0) {
+ struct target *ct = target;
+ int current_pc = 1;
+ int64_t thread_id;
+ char *endp;
+
+ parse += 2;
+ packet_size -= 2;
+
+ thread_id = strtoll(parse, &endp, 16);
+ if (endp != NULL) {
+ packet_size -= endp - parse;
+ parse = endp;
+ }
+
+ if (target->rtos != NULL) {
+ /* FIXME: why is this necessary? rtos state should be up-to-date here already! */
+ rtos_update_threads(target);
+
+ target->rtos->gdb_target_for_threadid(connection, thread_id, &ct);
+
+ /*
+ * check if the thread to be stepped is the current rtos thread
+ * if not, we must fake the step
+ */
+ if (target->rtos->current_thread != thread_id)
+ fake_step = true;
+ }
+
+ if (parse[0] == ';') {
+ ++parse;
+ --packet_size;
+
+ if (parse[0] == 'c') {
+ parse += 1;
+ packet_size -= 1;
+
+ /* check if thread-id follows */
+ if (parse[0] == ':') {
+ int64_t tid;
+ parse += 1;
+ packet_size -= 1;
+
+ tid = strtoll(parse, &endp, 16);
+ if (tid == thread_id) {
+ /*
+ * Special case: only step a single thread (core),
+ * keep the other threads halted. Currently, only
+ * aarch64 target understands it. Other target types don't
+ * care (nobody checks the actual value of 'current')
+ * and it doesn't really matter. This deserves
+ * a symbolic constant and a formal interface documentation
+ * at a later time.
+ */
+ LOG_DEBUG("request to step current core only");
+ /* uncomment after checking that indeed other targets are safe */
+ /*current_pc = 2;*/
+ }
+ }
+ }
+ }
+
+ LOG_DEBUG("target %s single-step thread %"PRIx64, target_name(ct), thread_id);
+ log_add_callback(gdb_log_callback, connection);
+ target_call_event_callbacks(ct, TARGET_EVENT_GDB_START);
+
+ /*
+ * work around an annoying gdb behaviour: when the current thread
+ * is changed in gdb, it assumes that the target can follow and also
+ * make the thread current. This is an assumption that cannot hold
+ * for a real target running a multi-threading OS. We just fake
+ * the step to not trigger an internal error in gdb. See
+ * https://sourceware.org/bugzilla/show_bug.cgi?id=22925 for details
+ */
+ if (fake_step) {
+ int sig_reply_len;
+ char sig_reply[128];
+
+ LOG_DEBUG("fake step thread %"PRIx64, thread_id);
+
+ sig_reply_len = snprintf(sig_reply, sizeof(sig_reply),
+ "T05thread:%016"PRIx64";", thread_id);
+
+ gdb_put_packet(connection, sig_reply, sig_reply_len);
+ log_remove_callback(gdb_log_callback, connection);
+
+ return true;
+ }
+
+ /* support for gdb_sync command */
+ if (gdb_connection->sync) {
+ gdb_connection->sync = false;
+ if (ct->state == TARGET_HALTED) {
+ LOG_WARNING("stepi ignored. GDB will now fetch the register state " \
+ "from the target.");
+ gdb_sig_halted(connection);
+ log_remove_callback(gdb_log_callback, connection);
+ } else
+ gdb_connection->frontend_state = TARGET_RUNNING;
+ return true;
+ }
+
+ retval = target_step(ct, current_pc, 0, 0);
+ if (retval == ERROR_TARGET_NOT_HALTED)
+ LOG_INFO("target %s was not halted when step was requested", target_name(ct));
+
+ /* if step was successful send a reply back to gdb */
+ if (retval == ERROR_OK) {
+ retval = target_poll(ct);
+ if (retval != ERROR_OK)
+ LOG_DEBUG("error polling target %s after successful step", target_name(ct));
+ /* send back signal information */
+ gdb_signal_reply(ct, connection);
+ /* stop forwarding log packets! */
+ log_remove_callback(gdb_log_callback, connection);
+ } else
+ gdb_connection->frontend_state = TARGET_RUNNING;
+ } else {
+ LOG_ERROR("Unknown vCont packet");
+ return false;
+ }
+ return true;
+ }
+
+ return false;
+}
+
static int gdb_v_packet(struct connection *connection,
- char *packet, int packet_size)
+ char const *packet, int packet_size)
{
struct gdb_connection *gdb_connection = connection->priv;
- struct gdb_service *gdb_service = connection->service->priv;
+ struct target *target;
int result;
+ target = get_target_from_connection(connection);
+
+ if (strncmp(packet, "vCont", 5) == 0) {
+ bool handled;
+
+ packet += 5;
+ packet_size -= 5;
+
+ handled = gdb_handle_vcont_packet(connection, packet, packet_size);
+ if (!handled)
+ gdb_put_packet(connection, "", 0);
+
+ return ERROR_OK;
+ }
+
/* if flash programming disabled - send a empty reply */
if (gdb_flash_program == 0) {
return ERROR_OK;
}
- if (strstr(packet, "vFlashErase:")) {
+ if (strncmp(packet, "vFlashErase:", 12) == 0) {
unsigned long addr;
unsigned long length;
- char *parse = packet + 12;
+ char const *parse = packet + 12;
if (*parse == '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
- addr = strtoul(parse, &parse, 16);
+ addr = strtoul(parse, (char **)&parse, 16);
if (*(parse++) != ',' || *parse == '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
- length = strtoul(parse, &parse, 16);
+ length = strtoul(parse, (char **)&parse, 16);
if (*parse != '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
flash_set_dirty();
/* perform any target specific operations before the erase */
- target_call_event_callbacks(gdb_service->target,
+ target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_ERASE_START);
/* vFlashErase:addr,length messages require region start and
* end to be "block" aligned ... if padding is ever needed,
* GDB will have become dangerously confused.
*/
- result = flash_erase_address_range(gdb_service->target,
- false, addr, length);
+ result = flash_erase_address_range(target, false, addr,
+ length);
/* perform any target specific operations after the erase */
- target_call_event_callbacks(gdb_service->target,
+ target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_ERASE_END);
/* perform erase */
return ERROR_OK;
}
- if (strstr(packet, "vFlashWrite:")) {
+ if (strncmp(packet, "vFlashWrite:", 12) == 0) {
int retval;
unsigned long addr;
unsigned long length;
- char *parse = packet + 12;
+ char const *parse = packet + 12;
if (*parse == '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
- addr = strtoul(parse, &parse, 16);
+ addr = strtoul(parse, (char **)&parse, 16);
if (*(parse++) != ':') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
/* create new section with content from packet buffer */
retval = image_add_section(gdb_connection->vflash_image,
- addr, length, 0x0, (uint8_t *)parse);
+ addr, length, 0x0, (uint8_t const *)parse);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
- if (!strcmp(packet, "vFlashDone")) {
+ if (strncmp(packet, "vFlashDone", 10) == 0) {
uint32_t written;
/* process the flashing buffer. No need to erase as GDB
* always issues a vFlashErase first. */
- target_call_event_callbacks(gdb_service->target,
+ target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_WRITE_START);
- result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_END);
+ result = flash_write(target, gdb_connection->vflash_image,
+ &written, 0);
+ target_call_event_callbacks(target,
+ TARGET_EVENT_GDB_FLASH_WRITE_END);
if (result != ERROR_OK) {
if (result == ERROR_FLASH_DST_OUT_OF_BANK)
gdb_put_packet(connection, "E.memtype", 9);
static int gdb_detach(struct connection *connection)
{
- struct gdb_service *gdb_service = connection->service->priv;
+ /*
+ * Only reply "OK" to GDB
+ * it will close the connection and this will trigger a call to
+ * gdb_connection_closed() that will in turn trigger the event
+ * TARGET_EVENT_GDB_DETACH
+ */
+ return gdb_put_packet(connection, "OK", 2);
+}
+
+/* The format of 'F' response packet is
+ * Fretcode,errno,Ctrl-C flag;call-specific attachment
+ */
+static int gdb_fileio_response_packet(struct connection *connection,
+ char const *packet, int packet_size)
+{
+ struct target *target = get_target_from_connection(connection);
+ char *separator;
+ char *parsing_point;
+ int fileio_retcode = strtoul(packet + 1, &separator, 16);
+ int fileio_errno = 0;
+ bool fileio_ctrl_c = false;
+ int retval;
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH);
+ LOG_DEBUG("-");
- return gdb_put_packet(connection, "OK", 2);
+ if (*separator == ',') {
+ parsing_point = separator + 1;
+ fileio_errno = strtoul(parsing_point, &separator, 16);
+ if (*separator == ',') {
+ if (*(separator + 1) == 'C') {
+ /* TODO: process ctrl-c */
+ fileio_ctrl_c = true;
+ }
+ }
+ }
+
+ LOG_DEBUG("File-I/O response, retcode: 0x%x, errno: 0x%x, ctrl-c: %s",
+ fileio_retcode, fileio_errno, fileio_ctrl_c ? "true" : "false");
+
+ retval = target_gdb_fileio_end(target, fileio_retcode, fileio_errno, fileio_ctrl_c);
+ if (retval != ERROR_OK)
+ return ERROR_FAIL;
+
+ /* After File-I/O ends, keep continue or step */
+ if (gdb_running_type == 'c')
+ retval = target_resume(target, 1, 0x0, 0, 0);
+ else if (gdb_running_type == 's')
+ retval = target_step(target, 1, 0x0, 0);
+ else
+ retval = ERROR_FAIL;
+
+ if (retval != ERROR_OK)
+ return ERROR_FAIL;
+
+ return ERROR_OK;
}
static void gdb_log_callback(void *priv, const char *file, unsigned line,
/* Do not allocate this on the stack */
static char gdb_packet_buffer[GDB_BUFFER_SIZE];
- struct gdb_service *gdb_service = connection->service->priv;
- struct target *target = gdb_service->target;
- char *packet = gdb_packet_buffer;
+ struct target *target;
+ char const *packet = gdb_packet_buffer;
int packet_size;
int retval;
struct gdb_connection *gdb_con = connection->priv;
static int extended_protocol;
+ target = get_target_from_connection(connection);
+
/* drain input buffer. If one of the packets fail, then an error
* packet is replied, if applicable.
*
*/
do {
packet_size = GDB_BUFFER_SIZE-1;
- retval = gdb_get_packet(connection, packet, &packet_size);
+ retval = gdb_get_packet(connection, gdb_packet_buffer, &packet_size);
if (retval != ERROR_OK)
return retval;
/* terminate with zero */
- packet[packet_size] = 0;
+ gdb_packet_buffer[packet_size] = '\0';
if (LOG_LEVEL_IS(LOG_LVL_DEBUG)) {
if (packet[0] == 'X') {
return retval;
break;
case 'k':
- if (extended_protocol != 0)
+ if (extended_protocol != 0) {
+ gdb_con->attached = false;
break;
+ }
gdb_put_packet(connection, "OK", 2);
return ERROR_SERVER_REMOTE_CLOSED;
case '!':
break;
case 'R':
/* handle extended restart packet */
- breakpoint_clear_target(gdb_service->target);
- watchpoint_clear_target(gdb_service->target);
+ breakpoint_clear_target(target);
+ watchpoint_clear_target(target);
command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %s",
target_name(target));
+ /* set connection as attached after reset */
+ gdb_con->attached = true;
/* info rtos parts */
gdb_thread_packet(connection, packet, packet_size);
- gdb_put_packet(connection, "OK", 2);
break;
case 'j':
gdb_write_smp_packet(connection, packet, packet_size);
break;
+ case 'F':
+ /* File-I/O extension */
+ /* After gdb uses host-side syscall to complete target file
+ * I/O, gdb sends host-side syscall return value to target
+ * by 'F' packet.
+ * The format of 'F' response packet is
+ * Fretcode,errno,Ctrl-C flag;call-specific attachment
+ */
+ gdb_con->frontend_state = TARGET_RUNNING;
+ log_add_callback(gdb_log_callback, connection);
+ gdb_fileio_response_packet(connection, packet, packet_size);
+ break;
+
default:
/* ignore unknown packets */
LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
if (gdb_con->ctrl_c) {
if (target->state == TARGET_RUNNING) {
- retval = target_halt(target);
+ struct target *t = target;
+ if (target->rtos)
+ target->rtos->gdb_target_for_threadid(connection, target->rtos->current_threadid, &t);
+ retval = target_halt(t);
+ if (retval == ERROR_OK)
+ retval = target_poll(t);
if (retval != ERROR_OK)
target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
gdb_con->ctrl_c = 0;
static int gdb_target_add_one(struct target *target)
{
+ if (strcmp(gdb_port, "disabled") == 0) {
+ LOG_INFO("gdb port disabled");
+ return ERROR_OK;
+ }
+
/* one gdb instance per smp list */
if ((target->smp) && (target->gdb_service))
return ERROR_OK;
portnumber = strtol(gdb_port_next, &end, 0);
if (!*end) {
if (parse_long(gdb_port_next, &portnumber) == ERROR_OK) {
- free((void *)gdb_port_next);
- gdb_port_next = alloc_printf("%d", portnumber+1);
+ free(gdb_port_next);
+ if (portnumber) {
+ gdb_port_next = alloc_printf("%d", portnumber+1);
+ } else {
+ /* Don't increment if gdb_port is 0, since we're just
+ * trying to allocate an unused port. */
+ gdb_port_next = strdup("0");
+ }
}
}
}
int gdb_target_add_all(struct target *target)
{
+ if (strcmp(gdb_port, "disabled") == 0) {
+ LOG_INFO("gdb server disabled");
+ return ERROR_OK;
+ }
+
if (NULL == target) {
LOG_WARNING("gdb services need one or more targets defined");
return ERROR_OK;
{
int retval = CALL_COMMAND_HANDLER(server_pipe_command, &gdb_port);
if (ERROR_OK == retval) {
- free((void *)gdb_port_next);
+ free(gdb_port_next);
gdb_port_next = strdup(gdb_port);
}
return retval;
return ERROR_OK;
}
+COMMAND_HANDLER(handle_gdb_report_register_access_error)
+{
+ if (CMD_ARGC != 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ COMMAND_PARSE_ENABLE(CMD_ARGV[0], gdb_report_register_access_error);
+ return ERROR_OK;
+}
+
/* gdb_breakpoint_override */
COMMAND_HANDLER(handle_gdb_breakpoint_override_command)
{
return ERROR_OK;
}
+COMMAND_HANDLER(handle_gdb_target_description_command)
+{
+ if (CMD_ARGC != 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ COMMAND_PARSE_ENABLE(CMD_ARGV[0], gdb_use_target_description);
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(handle_gdb_save_tdesc_command)
+{
+ char *tdesc;
+ uint32_t tdesc_length;
+ struct target *target = get_current_target(CMD_CTX);
+
+ int retval = gdb_generate_target_description(target, &tdesc);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Unable to Generate Target Description");
+ return ERROR_FAIL;
+ }
+
+ tdesc_length = strlen(tdesc);
+
+ struct fileio *fileio;
+ size_t size_written;
+
+ char *tdesc_filename = alloc_printf("%s.xml", target_type_name(target));
+ if (tdesc_filename == NULL) {
+ retval = ERROR_FAIL;
+ goto out;
+ }
+
+ retval = fileio_open(&fileio, tdesc_filename, FILEIO_WRITE, FILEIO_TEXT);
+
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Can't open %s for writing", tdesc_filename);
+ goto out;
+ }
+
+ retval = fileio_write(fileio, tdesc_length, tdesc, &size_written);
+
+ fileio_close(fileio);
+
+ if (retval != ERROR_OK)
+ LOG_ERROR("Error while writing the tdesc file");
+
+out:
+ free(tdesc_filename);
+ free(tdesc);
+
+ return retval;
+}
+
static const struct command_registration gdb_command_handlers[] = {
{
.name = "gdb_sync",
"server listens for the next port number after the "
"base port number specified. "
"No arguments reports GDB port. \"pipe\" means listen to stdin "
- "output to stdout, an integer is base port number, \"disable\" disables "
+ "output to stdout, an integer is base port number, \"disabled\" disables "
"port. Any other string is are interpreted as named pipe to listen to. "
"Output pipe is the same name as input pipe, but with 'o' appended.",
.usage = "[port_num]",
.help = "enable or disable reporting data aborts",
.usage = "('enable'|'disable')"
},
+ {
+ .name = "gdb_report_register_access_error",
+ .handler = handle_gdb_report_register_access_error,
+ .mode = COMMAND_CONFIG,
+ .help = "enable or disable reporting register access errors",
+ .usage = "('enable'|'disable')"
+ },
{
.name = "gdb_breakpoint_override",
.handler = handle_gdb_breakpoint_override_command,
"to be used by gdb 'break' commands.",
.usage = "('hard'|'soft'|'disable')"
},
+ {
+ .name = "gdb_target_description",
+ .handler = handle_gdb_target_description_command,
+ .mode = COMMAND_CONFIG,
+ .help = "enable or disable target description",
+ .usage = "('enable'|'disable')"
+ },
+ {
+ .name = "gdb_save_tdesc",
+ .handler = handle_gdb_save_tdesc_command,
+ .mode = COMMAND_EXEC,
+ .help = "Save the target description file",
+ },
COMMAND_REGISTRATION_DONE
};
gdb_port_next = strdup("3333");
return register_commands(cmd_ctx, NULL, gdb_command_handlers);
}
+
+void gdb_service_free(void)
+{
+ free(gdb_port);
+ free(gdb_port_next);
+}
Code Review / openocd.git / blobdiff