|
- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2007-2010 Øyvind Harboe *
- * oyvind.harboe@zylin.com *
- * *
- * Copyright (C) 2008 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * Copyright (C) 2011 by Broadcom Corporation *
- * Evan Hunter - ehunter@broadcom.com *
- * *
- * 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 *
- * (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., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include <target/breakpoints.h>
- #include <target/target_request.h>
- #include <target/register.h>
- #include "server.h"
- #include <flash/nor/core.h>
- #include "gdb_server.h"
- #include <target/image.h>
- #include <jtag/jtag.h>
- #include "rtos/rtos.h"
- #include "target/smp.h"
-
- /**
- * @file
- * GDB server implementation.
- *
- * This implements the GDB Remote Serial Protocol, over TCP connections,
- * giving GDB access to the JTAG or other hardware debugging facilities
- * 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];
- char *buf_p;
- int buf_cnt;
- int ctrl_c;
- enum target_state frontend_state;
- struct image *vflash_image;
- int closed;
- int 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
- * without modifying the target state. */
- bool sync;
- /* We delay reporting memory write errors until next step/continue or memory
- * write. This improves performance of gdb load significantly as the GDB packet
- * 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;
- };
-
- #if 0
- #define _DEBUG_GDB_IO_
- #endif
-
- static struct gdb_connection *current_gdb_connection;
-
- static int gdb_breakpoint_override;
- static enum breakpoint_type gdb_breakpoint_override_type;
-
- static int gdb_error(struct connection *connection, int retval);
- 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);
-
- /* 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;
-
- /* set if we are sending a memory map to gdb
- * via qXfer:memory-map:read packet */
- /* enabled by default*/
- static int gdb_use_memory_map = 1;
- /* enabled by default*/
- static int gdb_flash_program = 1;
-
- /* if set, data aborts cause an error to be reported in memory read packets
- * see the code in gdb_read_memory_packet() for further explanations.
- * Disabled by default.
- */
- static int gdb_report_data_abort;
-
- /* 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)
- {
- switch (target->debug_reason) {
- case DBG_REASON_DBGRQ:
- return 0x2; /* SIGINT */
- case DBG_REASON_BREAKPOINT:
- case DBG_REASON_WATCHPOINT:
- case DBG_REASON_WPTANDBKPT:
- return 0x05; /* SIGTRAP */
- case DBG_REASON_SINGLESTEP:
- return 0x05; /* SIGTRAP */
- case DBG_REASON_NOTHALTED:
- return 0x0; /* no signal... shouldn't happen */
- default:
- LOG_USER("undefined debug reason %d - target needs reset",
- target->debug_reason);
- return 0x0;
- }
- }
-
- static int check_pending(struct connection *connection,
- int timeout_s, int *got_data)
- {
- /* a non-blocking socket will block if there is 0 bytes available on the socket,
- * but return with as many bytes as are available immediately
- */
- struct timeval tv;
- fd_set read_fds;
- struct gdb_connection *gdb_con = connection->priv;
- int t;
- if (got_data == NULL)
- got_data = &t;
- *got_data = 0;
-
- if (gdb_con->buf_cnt > 0) {
- *got_data = 1;
- return ERROR_OK;
- }
-
- FD_ZERO(&read_fds);
- FD_SET(connection->fd, &read_fds);
-
- tv.tv_sec = timeout_s;
- tv.tv_usec = 0;
- if (socket_select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 0) {
- /* This can typically be because a "monitor" command took too long
- * before printing any progress messages
- */
- if (timeout_s > 0)
- return ERROR_GDB_TIMEOUT;
- else
- return ERROR_OK;
- }
- *got_data = FD_ISSET(connection->fd, &read_fds) != 0;
- return ERROR_OK;
- }
-
- static int gdb_get_char_inner(struct connection *connection, int *next_char)
- {
- struct gdb_connection *gdb_con = connection->priv;
- int retval = ERROR_OK;
-
- #ifdef _DEBUG_GDB_IO_
- char *debug_buffer;
- #endif
- for (;; ) {
- if (connection->service->type != CONNECTION_TCP)
- gdb_con->buf_cnt = read(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
- else {
- retval = check_pending(connection, 1, NULL);
- if (retval != ERROR_OK)
- return retval;
- gdb_con->buf_cnt = read_socket(connection->fd,
- gdb_con->buffer,
- GDB_BUFFER_SIZE);
- }
-
- if (gdb_con->buf_cnt > 0)
- break;
- if (gdb_con->buf_cnt == 0) {
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- #ifdef _WIN32
- errno = WSAGetLastError();
-
- switch (errno) {
- case WSAEWOULDBLOCK:
- usleep(1000);
- break;
- case WSAECONNABORTED:
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- case WSAECONNRESET:
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- default:
- LOG_ERROR("read: %d", errno);
- exit(-1);
- }
- #else
- switch (errno) {
- case EAGAIN:
- usleep(1000);
- break;
- case ECONNABORTED:
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- case ECONNRESET:
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- default:
- LOG_ERROR("read: %s", strerror(errno));
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- }
- #endif
- }
-
- #ifdef _DEBUG_GDB_IO_
- debug_buffer = strndup(gdb_con->buffer, gdb_con->buf_cnt);
- LOG_DEBUG("received '%s'", debug_buffer);
- free(debug_buffer);
- #endif
-
- gdb_con->buf_p = gdb_con->buffer;
- gdb_con->buf_cnt--;
- *next_char = *(gdb_con->buf_p++);
- if (gdb_con->buf_cnt > 0)
- connection->input_pending = 1;
- else
- connection->input_pending = 0;
- #ifdef _DEBUG_GDB_IO_
- LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
- #endif
-
- return retval;
- }
-
- /**
- * The cool thing about this fn is that it allows buf_p and buf_cnt to be
- * held in registers in the inner loop.
- *
- * For small caches and embedded systems this is important!
- */
- static inline int gdb_get_char_fast(struct connection *connection,
- int *next_char, char **buf_p, int *buf_cnt)
- {
- int retval = ERROR_OK;
-
- if ((*buf_cnt)-- > 0) {
- *next_char = **buf_p;
- (*buf_p)++;
- if (*buf_cnt > 0)
- connection->input_pending = 1;
- else
- connection->input_pending = 0;
-
- #ifdef _DEBUG_GDB_IO_
- LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
- #endif
-
- return ERROR_OK;
- }
-
- struct gdb_connection *gdb_con = connection->priv;
- gdb_con->buf_p = *buf_p;
- gdb_con->buf_cnt = *buf_cnt;
- retval = gdb_get_char_inner(connection, next_char);
- *buf_p = gdb_con->buf_p;
- *buf_cnt = gdb_con->buf_cnt;
-
- return retval;
- }
-
- static int gdb_get_char(struct connection *connection, int *next_char)
- {
- struct gdb_connection *gdb_con = connection->priv;
- return gdb_get_char_fast(connection, next_char, &gdb_con->buf_p, &gdb_con->buf_cnt);
- }
-
- static int gdb_putback_char(struct connection *connection, int last_char)
- {
- struct gdb_connection *gdb_con = connection->priv;
-
- if (gdb_con->buf_p > gdb_con->buffer) {
- *(--gdb_con->buf_p) = last_char;
- gdb_con->buf_cnt++;
- } else
- LOG_ERROR("BUG: couldn't put character back");
-
- return ERROR_OK;
- }
-
- /* The only way we can detect that the socket is closed is the first time
- * we write to it, we will fail. Subsequent write operations will
- * succeed. Shudder! */
- static int gdb_write(struct connection *connection, void *data, int len)
- {
- struct gdb_connection *gdb_con = connection->priv;
- if (gdb_con->closed)
- return ERROR_SERVER_REMOTE_CLOSED;
-
- if (connection_write(connection, data, len) == len)
- return ERROR_OK;
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- static int gdb_put_packet_inner(struct connection *connection,
- char *buffer, int len)
- {
- int i;
- unsigned char my_checksum = 0;
- #ifdef _DEBUG_GDB_IO_
- char *debug_buffer;
- #endif
- int reply;
- int retval;
- struct gdb_connection *gdb_con = connection->priv;
-
- for (i = 0; i < len; i++)
- my_checksum += buffer[i];
-
- #ifdef _DEBUG_GDB_IO_
- /*
- * At this point we should have nothing in the input queue from GDB,
- * however sometimes '-' is sent even though we've already received
- * an ACK (+) for everything we've sent off.
- */
- int gotdata;
- for (;; ) {
- retval = check_pending(connection, 0, &gotdata);
- if (retval != ERROR_OK)
- return retval;
- if (!gotdata)
- break;
- retval = gdb_get_char(connection, &reply);
- if (retval != ERROR_OK)
- return retval;
- if (reply == '$') {
- /* fix a problem with some IAR tools */
- gdb_putback_char(connection, reply);
- LOG_DEBUG("Unexpected start of new packet");
- break;
- }
-
- LOG_WARNING("Discard unexpected char %c", reply);
- }
- #endif
-
- while (1) {
- #ifdef _DEBUG_GDB_IO_
- debug_buffer = strndup(buffer, len);
- LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
- free(debug_buffer);
- #endif
-
- char local_buffer[1024];
- local_buffer[0] = '$';
- if ((size_t)len + 4 <= sizeof(local_buffer)) {
- /* performance gain on smaller packets by only a single call to gdb_write() */
- memcpy(local_buffer + 1, buffer, len++);
- len += snprintf(local_buffer + len, sizeof(local_buffer) - len, "#%02x", my_checksum);
- retval = gdb_write(connection, local_buffer, len);
- if (retval != ERROR_OK)
- return retval;
- } else {
- /* larger packets are transmitted directly from caller supplied buffer
- * by several calls to gdb_write() to avoid dynamic allocation */
- snprintf(local_buffer + 1, sizeof(local_buffer) - 1, "#%02x", my_checksum);
- retval = gdb_write(connection, local_buffer, 1);
- if (retval != ERROR_OK)
- return retval;
- retval = gdb_write(connection, buffer, len);
- if (retval != ERROR_OK)
- return retval;
- retval = gdb_write(connection, local_buffer + 1, 3);
- if (retval != ERROR_OK)
- return retval;
- }
-
- if (gdb_con->noack_mode)
- break;
-
- retval = gdb_get_char(connection, &reply);
- if (retval != ERROR_OK)
- return retval;
-
- if (reply == '+')
- break;
- else if (reply == '-') {
- /* Stop sending output packets for now */
- log_remove_callback(gdb_log_callback, connection);
- LOG_WARNING("negative reply, retrying");
- } else if (reply == 0x3) {
- gdb_con->ctrl_c = 1;
- retval = gdb_get_char(connection, &reply);
- if (retval != ERROR_OK)
- return retval;
- if (reply == '+')
- break;
- else if (reply == '-') {
- /* Stop sending output packets for now */
- log_remove_callback(gdb_log_callback, connection);
- LOG_WARNING("negative reply, retrying");
- } else if (reply == '$') {
- LOG_ERROR("GDB missing ack(1) - assumed good");
- gdb_putback_char(connection, reply);
- return ERROR_OK;
- } else {
- LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply);
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- }
- } else if (reply == '$') {
- LOG_ERROR("GDB missing ack(2) - assumed good");
- gdb_putback_char(connection, reply);
- return ERROR_OK;
- } else {
- LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection",
- reply);
- gdb_con->closed = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
- }
- }
- if (gdb_con->closed)
- return ERROR_SERVER_REMOTE_CLOSED;
-
- return ERROR_OK;
- }
-
- int gdb_put_packet(struct connection *connection, char *buffer, int len)
- {
- struct gdb_connection *gdb_con = connection->priv;
- gdb_con->busy = 1;
- int retval = gdb_put_packet_inner(connection, buffer, len);
- gdb_con->busy = 0;
-
- /* we sent some data, reset timer for keep alive messages */
- kept_alive();
-
- return retval;
- }
-
- static inline int fetch_packet(struct connection *connection,
- int *checksum_ok, int noack, int *len, char *buffer)
- {
- unsigned char my_checksum = 0;
- char checksum[3];
- int character;
- int retval = ERROR_OK;
-
- struct gdb_connection *gdb_con = connection->priv;
- my_checksum = 0;
- int count = 0;
- count = 0;
-
- /* move this over into local variables to use registers and give the
- * more freedom to optimize */
- char *buf_p = gdb_con->buf_p;
- int buf_cnt = gdb_con->buf_cnt;
-
- for (;; ) {
- /* The common case is that we have an entire packet with no escape chars.
- * We need to leave at least 2 bytes in the buffer to have
- * gdb_get_char() update various bits and bobs correctly.
- */
- if ((buf_cnt > 2) && ((buf_cnt + count) < *len)) {
- /* The compiler will struggle a bit with constant propagation and
- * aliasing, so we help it by showing that these values do not
- * change inside the loop
- */
- int i;
- char *buf = buf_p;
- int run = buf_cnt - 2;
- i = 0;
- int done = 0;
- while (i < run) {
- character = *buf++;
- i++;
- if (character == '#') {
- /* Danger! character can be '#' when esc is
- * used so we need an explicit boolean for done here. */
- done = 1;
- break;
- }
-
- if (character == '}') {
- /* data transmitted in binary mode (X packet)
- * uses 0x7d as escape character */
- my_checksum += character & 0xff;
- character = *buf++;
- i++;
- my_checksum += character & 0xff;
- buffer[count++] = (character ^ 0x20) & 0xff;
- } else {
- my_checksum += character & 0xff;
- buffer[count++] = character & 0xff;
- }
- }
- buf_p += i;
- buf_cnt -= i;
- if (done)
- break;
- }
- if (count > *len) {
- LOG_ERROR("packet buffer too small");
- retval = ERROR_GDB_BUFFER_TOO_SMALL;
- break;
- }
-
- retval = gdb_get_char_fast(connection, &character, &buf_p, &buf_cnt);
- if (retval != ERROR_OK)
- break;
-
- if (character == '#')
- break;
-
- if (character == '}') {
- /* data transmitted in binary mode (X packet)
- * uses 0x7d as escape character */
- my_checksum += character & 0xff;
-
- retval = gdb_get_char_fast(connection, &character, &buf_p, &buf_cnt);
- if (retval != ERROR_OK)
- break;
-
- my_checksum += character & 0xff;
- buffer[count++] = (character ^ 0x20) & 0xff;
- } else {
- my_checksum += character & 0xff;
- buffer[count++] = character & 0xff;
- }
- }
-
- gdb_con->buf_p = buf_p;
- gdb_con->buf_cnt = buf_cnt;
-
- if (retval != ERROR_OK)
- return retval;
-
- *len = count;
-
- retval = gdb_get_char(connection, &character);
- if (retval != ERROR_OK)
- return retval;
- checksum[0] = character;
- retval = gdb_get_char(connection, &character);
- if (retval != ERROR_OK)
- return retval;
- checksum[1] = character;
- checksum[2] = 0;
-
- if (!noack)
- *checksum_ok = (my_checksum == strtoul(checksum, NULL, 16));
-
- return ERROR_OK;
- }
-
- static int gdb_get_packet_inner(struct connection *connection,
- char *buffer, int *len)
- {
- int character;
- int retval;
- struct gdb_connection *gdb_con = connection->priv;
-
- while (1) {
- do {
- retval = gdb_get_char(connection, &character);
- if (retval != ERROR_OK)
- return retval;
-
- #ifdef _DEBUG_GDB_IO_
- LOG_DEBUG("character: '%c'", character);
- #endif
-
- switch (character) {
- case '$':
- break;
- case '+':
- /* 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 {
- 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");
- break;
- case 0x3:
- gdb_con->ctrl_c = 1;
- *len = 0;
- return ERROR_OK;
- default:
- LOG_WARNING("ignoring character 0x%x", character);
- break;
- }
- } while (character != '$');
-
- int checksum_ok = 0;
- /* explicit code expansion here to get faster inlined code in -O3 by not
- * calculating checksum */
- if (gdb_con->noack_mode) {
- retval = fetch_packet(connection, &checksum_ok, 1, len, buffer);
- if (retval != ERROR_OK)
- return retval;
- } else {
- retval = fetch_packet(connection, &checksum_ok, 0, len, buffer);
- if (retval != ERROR_OK)
- return retval;
- }
-
- if (gdb_con->noack_mode) {
- /* checksum is not checked in noack mode */
- break;
- }
- if (checksum_ok) {
- retval = gdb_write(connection, "+", 1);
- if (retval != ERROR_OK)
- return retval;
- break;
- }
- }
- if (gdb_con->closed)
- return ERROR_SERVER_REMOTE_CLOSED;
-
- return ERROR_OK;
- }
-
- static int gdb_get_packet(struct connection *connection, char *buffer, int *len)
- {
- struct gdb_connection *gdb_con = connection->priv;
- gdb_con->busy = 1;
- int retval = gdb_get_packet_inner(connection, buffer, len);
- gdb_con->busy = 0;
- return retval;
- }
-
- static int gdb_output_con(struct connection *connection, const char *line)
- {
- char *hex_buffer;
- int bin_size;
-
- bin_size = strlen(line);
-
- hex_buffer = malloc(bin_size * 2 + 2);
- if (hex_buffer == NULL)
- return ERROR_GDB_BUFFER_TOO_SMALL;
-
- hex_buffer[0] = 'O';
- int pkt_len = hexify(hex_buffer + 1, line, bin_size, bin_size * 2 + 1);
- int retval = gdb_put_packet(connection, hex_buffer, pkt_len + 1);
-
- free(hex_buffer);
- return retval;
- }
-
- static int gdb_output(struct command_context *context, const char *line)
- {
- /* this will be dumped to the log and also sent as an O packet if possible */
- LOG_USER_N("%s", line);
- return ERROR_OK;
- }
-
- static void gdb_signal_reply(struct target *target, struct connection *connection)
- {
- struct gdb_connection *gdb_connection = connection->priv;
- char sig_reply[20];
- char stop_reason[20];
- int sig_reply_len;
- int signal_var;
-
- 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;
- gdb_connection->ctrl_c = 0;
- } else
- signal_var = gdb_last_signal(target);
-
- stop_reason[0] = '\0';
- if (target->debug_reason == DBG_REASON_WATCHPOINT) {
- enum watchpoint_rw hit_wp_type;
- uint32_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" PRIx32 ";", hit_wp_address);
- break;
- case WPT_READ:
- snprintf(stop_reason, sizeof(stop_reason),
- "rwatch:%08" PRIx32 ";", hit_wp_address);
- break;
- case WPT_ACCESS:
- snprintf(stop_reason, sizeof(stop_reason),
- "awatch:%08" PRIx32 ";", hit_wp_address);
- break;
- default:
- break;
- }
- }
- }
-
- sig_reply_len = snprintf(sig_reply, sizeof(sig_reply), "T%2.2x%s",
- signal_var, stop_reason);
- }
-
- gdb_put_packet(connection, sig_reply, sig_reply_len);
- gdb_connection->frontend_state = TARGET_HALTED;
- rtos_update_threads(target);
- }
-
- 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,%" PRIx32 "/%" PRIx32 ",%" PRIx32 ",%" PRIx32, 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,%" PRIx32, target->fileio_info->identifier,
- target->fileio_info->param_1);
- else if (strcmp(target->fileio_info->identifier, "read") == 0)
- sprintf(fileio_command, "F%s,%" PRIx32 ",%" PRIx32 ",%" PRIx32, 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,%" PRIx32 ",%" PRIx32 ",%" PRIx32, 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,%" PRIx32 ",%" PRIx32 ",%" PRIx32, 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,%" PRIx32 "/%" PRIx32 ",%" PRIx32 "/%" PRIx32, 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,%" PRIx32 "/%" PRIx32, 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,%" PRIx32 "/%" PRIx32 ",%" PRIx32, 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,%" PRIx32 ",%" PRIx32, 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,%" PRIx32 ",%" PRIx32, 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,%" PRIx32, target->fileio_info->identifier,
- target->fileio_info->param_1);
- else if (strcmp(target->fileio_info->identifier, "system") == 0)
- sprintf(fileio_command, "F%s,%" PRIx32 "/%" PRIx32, 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" PRIx32, 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;
-
- /* In the GDB protocol when we are stepping or continuing execution,
- * we have a lingering reply. Upon receiving a halted event
- * when we have that lingering packet, we reply to the original
- * step or continue packet.
- *
- * Executing monitor commands can bring the target in and
- * out of the running state so we'll see lots of TARGET_EVENT_XXX
- * that are to be ignored.
- */
- if (gdb_connection->frontend_state == TARGET_RUNNING) {
- /* stop forwarding log packets! */
- log_remove_callback(gdb_log_callback, connection);
-
- /* 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);
- }
- }
-
- static int gdb_target_callback_event_handler(struct target *target,
- enum target_event event, void *priv)
- {
- int retval;
- struct connection *connection = priv;
- struct gdb_service *gdb_service = connection->service->priv;
-
- if (gdb_service->target != target)
- return ERROR_OK;
-
- switch (event) {
- case TARGET_EVENT_GDB_HALT:
- gdb_frontend_halted(target, connection);
- break;
- case TARGET_EVENT_HALTED:
- target_call_event_callbacks(target, TARGET_EVENT_GDB_END);
- break;
- case TARGET_EVENT_GDB_FLASH_ERASE_START:
- retval = jtag_execute_queue();
- if (retval != ERROR_OK)
- return retval;
- break;
- default:
- break;
- }
-
- return ERROR_OK;
- }
-
- 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;
- int retval;
- int initial_ack;
-
- connection->priv = gdb_connection;
-
- /* initialize gdb connection information */
- gdb_connection->buf_p = gdb_connection->buffer;
- gdb_connection->buf_cnt = 0;
- 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->noack_mode = 0;
- 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;
-
- /* send ACK to GDB for debug request */
- gdb_write(connection, "+", 1);
-
- /* output goes through gdb connection */
- command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
-
- /* we must remove all breakpoints registered to the target as a previous
- * GDB session could leave dangling breakpoints if e.g. communication
- * timed out.
- */
- breakpoint_clear_target(gdb_service->target);
- watchpoint_clear_target(gdb_service->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);
-
- /* remove the initial ACK from the incoming buffer */
- retval = gdb_get_char(connection, &initial_ack);
- if (retval != ERROR_OK)
- return retval;
-
- /* FIX!!!??? would we actually ever receive a + here???
- * Not observed.
- */
- if (initial_ack != '+')
- gdb_putback_char(connection, initial_ack);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_ATTACH);
-
- if (gdb_use_memory_map) {
- /* Connect must fail if the memory map can't be set up correctly.
- *
- * This will cause an auto_probe to be invoked, which is either
- * a no-op or it will fail when the target isn't ready(e.g. not halted).
- */
- 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 != gdb_service->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 " \
- "to prepare target for GDB connect, or use 'gdb_memory_map disable'.");
- return retval;
- }
- }
- }
-
- gdb_actual_connections++;
- LOG_DEBUG("New GDB Connection: %d, Target %s, state: %s",
- gdb_actual_connections,
- target_name(gdb_service->target),
- target_state_name(gdb_service->target));
-
- /* DANGER! If we fail subsequently, we must remove this handler,
- * otherwise we occasionally see crashes as the timer can invoke the
- * callback fn.
- *
- * register callback to be informed about target events */
- target_register_event_callback(gdb_target_callback_event_handler, connection);
-
- return ERROR_OK;
- }
-
- static int gdb_connection_closed(struct connection *connection)
- {
- struct gdb_service *gdb_service = connection->service->priv;
- struct gdb_connection *gdb_connection = connection->priv;
-
- /* we're done forwarding messages. Tear down callback before
- * cleaning up connection.
- */
- log_remove_callback(gdb_log_callback, 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),
- gdb_actual_connections);
-
- /* see if an image built with vFlash commands is left */
- if (gdb_connection->vflash_image) {
- image_close(gdb_connection->vflash_image);
- free(gdb_connection->vflash_image);
- gdb_connection->vflash_image = NULL;
- }
-
- /* if this connection registered a debug-message receiver delete it */
- delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
-
- if (connection->priv) {
- free(connection->priv);
- connection->priv = NULL;
- } else
- LOG_ERROR("BUG: connection->priv == NULL");
-
- 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(gdb_service->target, TARGET_EVENT_GDB_DETACH);
-
- return ERROR_OK;
- }
-
- static void gdb_send_error(struct connection *connection, uint8_t the_error)
- {
- char err[4];
- snprintf(err, 4, "E%2.2X", the_error);
- gdb_put_packet(connection, err, 3);
- }
-
- static int gdb_last_signal_packet(struct connection *connection,
- 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);
- gdb_put_packet(connection, sig_reply, 3);
-
- return ERROR_OK;
- }
-
- static inline int gdb_reg_pos(struct target *target, int pos, int len)
- {
- if (target->endianness == TARGET_LITTLE_ENDIAN)
- return pos;
- else
- return len - 1 - pos;
- }
-
- /* Convert register to string of bytes. NB! The # of bits in the
- * register might be non-divisible by 8(a byte), in which
- * case an entire byte is shown.
- *
- * NB! the format on the wire is the target endianness
- *
- * The format of reg->value is little endian
- *
- */
- static void gdb_str_to_target(struct target *target,
- char *tstr, struct reg *reg)
- {
- int i;
-
- uint8_t *buf;
- int buf_len;
- buf = reg->value;
- buf_len = DIV_ROUND_UP(reg->size, 8);
-
- for (i = 0; i < buf_len; i++) {
- int j = gdb_reg_pos(target, i, buf_len);
- tstr += sprintf(tstr, "%02x", buf[j]);
- }
- }
-
- /* copy over in register buffer */
- static void gdb_target_to_reg(struct target *target,
- char const *tstr, int str_len, uint8_t *bin)
- {
- if (str_len % 2) {
- LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
- exit(-1);
- }
-
- int i;
- for (i = 0; i < str_len; i += 2) {
- 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 const *packet, int packet_size)
- {
- struct target *target = get_target_from_connection(connection);
- struct reg **reg_list;
- int reg_list_size;
- int retval;
- int reg_packet_size = 0;
- char *reg_packet;
- char *reg_packet_p;
- int i;
-
- #ifdef _DEBUG_GDB_IO_
- LOG_DEBUG("-");
- #endif
-
- 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,
- REG_CLASS_GENERAL);
- if (retval != ERROR_OK)
- return gdb_error(connection, retval);
-
- for (i = 0; i < reg_list_size; i++)
- reg_packet_size += DIV_ROUND_UP(reg_list[i]->size, 8) * 2;
-
- assert(reg_packet_size > 0);
-
- reg_packet = malloc(reg_packet_size + 1); /* plus one for string termination null */
- 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]);
- gdb_str_to_target(target, reg_packet_p, reg_list[i]);
- reg_packet_p += DIV_ROUND_UP(reg_list[i]->size, 8) * 2;
- }
-
- #ifdef _DEBUG_GDB_IO_
- {
- char *reg_packet_p_debug;
- reg_packet_p_debug = strndup(reg_packet, reg_packet_size);
- LOG_DEBUG("reg_packet: %s", reg_packet_p_debug);
- free(reg_packet_p_debug);
- }
- #endif
-
- gdb_put_packet(connection, reg_packet, reg_packet_size);
- free(reg_packet);
-
- free(reg_list);
-
- return ERROR_OK;
- }
-
- static int gdb_set_registers_packet(struct connection *connection,
- 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 const *packet_p;
-
- #ifdef _DEBUG_GDB_IO_
- LOG_DEBUG("-");
- #endif
-
- /* skip command character */
- packet++;
- packet_size--;
-
- if (packet_size % 2) {
- LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
- REG_CLASS_GENERAL);
- if (retval != ERROR_OK)
- return gdb_error(connection, retval);
-
- packet_p = packet;
- for (i = 0; i < reg_list_size; i++) {
- uint8_t *bin_buf;
- int chars = (DIV_ROUND_UP(reg_list[i]->size, 8) * 2);
-
- if (packet_p + chars > packet + packet_size)
- LOG_ERROR("BUG: register packet is too small for registers");
-
- 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);
-
- /* advance packet pointer */
- packet_p += chars;
-
- free(bin_buf);
- }
-
- /* free struct reg *reg_list[] array allocated by get_gdb_reg_list */
- free(reg_list);
-
- gdb_put_packet(connection, "OK", 2);
-
- return ERROR_OK;
- }
-
- static int gdb_get_register_packet(struct connection *connection,
- char const *packet, int packet_size)
- {
- struct target *target = get_target_from_connection(connection);
- char *reg_packet;
- int reg_num = strtoul(packet + 1, NULL, 16);
- struct reg **reg_list;
- int reg_list_size;
- int retval;
-
- #ifdef _DEBUG_GDB_IO_
- LOG_DEBUG("-");
- #endif
-
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
- REG_CLASS_ALL);
- if (retval != ERROR_OK)
- return gdb_error(connection, retval);
-
- if (reg_list_size <= reg_num) {
- LOG_ERROR("gdb requested a non-existing register");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- if (!reg_list[reg_num]->valid)
- reg_list[reg_num]->type->get(reg_list[reg_num]);
-
- 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]);
-
- gdb_put_packet(connection, reg_packet, DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2);
-
- free(reg_list);
- free(reg_packet);
-
- return ERROR_OK;
- }
-
- static int gdb_set_register_packet(struct connection *connection,
- char const *packet, int packet_size)
- {
- struct target *target = get_target_from_connection(connection);
- char *separator;
- uint8_t *bin_buf;
- int reg_num = strtoul(packet + 1, &separator, 16);
- struct reg **reg_list;
- int reg_list_size;
- int retval;
-
- LOG_DEBUG("-");
-
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
- REG_CLASS_ALL);
- if (retval != ERROR_OK)
- return gdb_error(connection, retval);
-
- if (reg_list_size <= reg_num) {
- LOG_ERROR("gdb requested a non-existing register");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- if (*separator != '=') {
- LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- /* convert from GDB-string (target-endian) to hex-string (big-endian) */
- bin_buf = malloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8));
- int chars = (DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2);
-
- if ((unsigned int)chars != strlen(separator + 1)) {
- LOG_ERROR("gdb sent a packet with wrong register size");
- free(bin_buf);
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- gdb_target_to_reg(target, separator + 1, chars, bin_buf);
-
- reg_list[reg_num]->type->set(reg_list[reg_num], bin_buf);
-
- gdb_put_packet(connection, "OK", 2);
-
- free(bin_buf);
- free(reg_list);
-
- return ERROR_OK;
- }
-
- /* No attempt is made to translate the "retval" to
- * GDB speak. This has to be done at the calling
- * site as no mapping really exists.
- */
- static int gdb_error(struct connection *connection, int retval)
- {
- LOG_DEBUG("Reporting %i to GDB as generic error", retval);
- gdb_send_error(connection, EFAULT);
- return ERROR_OK;
- }
-
- /* We don't have to worry about the default 2 second timeout for GDB packets,
- * because GDB breaks up large memory reads into smaller reads.
- *
- * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
- */
- static int gdb_read_memory_packet(struct connection *connection,
- char const *packet, int packet_size)
- {
- struct target *target = get_target_from_connection(connection);
- char *separator;
- uint32_t addr = 0;
- uint32_t len = 0;
-
- uint8_t *buffer;
- char *hex_buffer;
-
- int retval = ERROR_OK;
-
- /* skip command character */
- packet++;
-
- addr = strtoul(packet, &separator, 16);
-
- if (*separator != ',') {
- LOG_ERROR("incomplete read memory packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- 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);
-
- retval = target_read_buffer(target, addr, len, buffer);
-
- if ((retval != ERROR_OK) && !gdb_report_data_abort) {
- /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
- * At some point this might be fixed in GDB, in which case this code can be removed.
- *
- * OpenOCD developers are acutely aware of this problem, but there is nothing
- * gained by involving the user in this problem that hopefully will get resolved
- * eventually
- *
- * http://sourceware.org/cgi-bin/gnatsweb.pl? \
- * cmd = view%20audit-trail&database = gdb&pr = 2395
- *
- * For now, the default is to fix up things to make current GDB versions work.
- * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
- */
- memset(buffer, 0, len);
- retval = ERROR_OK;
- }
-
- if (retval == ERROR_OK) {
- hex_buffer = malloc(len * 2 + 1);
-
- int pkt_len = hexify(hex_buffer, (char *)buffer, len, len * 2 + 1);
-
- gdb_put_packet(connection, hex_buffer, pkt_len);
-
- free(hex_buffer);
- } else
- retval = gdb_error(connection, retval);
-
- free(buffer);
-
- return retval;
- }
-
- static int gdb_write_memory_packet(struct connection *connection,
- char const *packet, int packet_size)
- {
- struct target *target = get_target_from_connection(connection);
- char *separator;
- uint32_t addr = 0;
- uint32_t len = 0;
-
- uint8_t *buffer;
- int retval;
-
- /* skip command character */
- packet++;
-
- addr = strtoul(packet, &separator, 16);
-
- if (*separator != ',') {
- LOG_ERROR("incomplete write memory packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- len = strtoul(separator + 1, &separator, 16);
-
- if (*(separator++) != ':') {
- LOG_ERROR("incomplete write memory packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- buffer = malloc(len);
-
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
-
- if (unhexify((char *)buffer, separator, len) != (int)len)
- LOG_ERROR("unable to decode memory packet");
-
- retval = target_write_buffer(target, addr, len, buffer);
-
- if (retval == ERROR_OK)
- gdb_put_packet(connection, "OK", 2);
- else
- retval = gdb_error(connection, retval);
-
- free(buffer);
-
- return retval;
- }
-
- static int gdb_write_memory_binary_packet(struct connection *connection,
- char const *packet, int packet_size)
- {
- struct target *target = get_target_from_connection(connection);
- char *separator;
- uint32_t addr = 0;
- uint32_t len = 0;
-
- int retval = ERROR_OK;
-
- /* skip command character */
- packet++;
-
- addr = strtoul(packet, &separator, 16);
-
- if (*separator != ',') {
- LOG_ERROR("incomplete write memory binary packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- len = strtoul(separator + 1, &separator, 16);
-
- if (*(separator++) != ':') {
- LOG_ERROR("incomplete write memory binary packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- struct gdb_connection *gdb_connection = connection->priv;
-
- 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 {
- retval = gdb_error(connection, retval);
- if (retval != ERROR_OK)
- return retval;
- }
-
- if (len) {
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", 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;
- }
-
- return ERROR_OK;
- }
-
- static int gdb_step_continue_packet(struct connection *connection,
- char const *packet, int packet_size)
- {
- struct target *target = get_target_from_connection(connection);
- int current = 0;
- uint32_t address = 0x0;
- int retval = ERROR_OK;
-
- LOG_DEBUG("-");
-
- if (packet_size > 1)
- address = strtoul(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 */
- retval = target_resume(target, current, address, 0, 0);
- } else if (packet[0] == 's') {
- LOG_DEBUG("step");
- /* step at current or address, don't handle breakpoints */
- retval = target_step(target, current, address, 0);
- }
- return retval;
- }
-
- static int gdb_breakpoint_watchpoint_packet(struct connection *connection,
- 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;
- uint32_t size;
- char *separator;
- int retval;
-
- LOG_DEBUG("-");
-
- type = strtoul(packet + 1, &separator, 16);
-
- if (type == 0) /* memory breakpoint */
- bp_type = BKPT_SOFT;
- else if (type == 1) /* hardware breakpoint */
- bp_type = BKPT_HARD;
- else if (type == 2) /* write watchpoint */
- wp_type = WPT_WRITE;
- else if (type == 3) /* read watchpoint */
- wp_type = WPT_READ;
- else if (type == 4) /* access watchpoint */
- wp_type = WPT_ACCESS;
- else {
- LOG_ERROR("invalid gdb watch/breakpoint type(%d), dropping connection", type);
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- if (gdb_breakpoint_override && ((bp_type == BKPT_SOFT) || (bp_type == BKPT_HARD)))
- bp_type = gdb_breakpoint_override_type;
-
- if (*separator != ',') {
- LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- address = strtoul(separator + 1, &separator, 16);
-
- if (*separator != ',') {
- LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- size = strtoul(separator + 1, &separator, 16);
-
- switch (type) {
- case 0:
- case 1:
- if (packet[0] == 'Z') {
- retval = breakpoint_add(target, address, size, bp_type);
- if (retval != ERROR_OK) {
- retval = gdb_error(connection, retval);
- if (retval != ERROR_OK)
- return retval;
- } else
- gdb_put_packet(connection, "OK", 2);
- } else {
- breakpoint_remove(target, address);
- gdb_put_packet(connection, "OK", 2);
- }
- break;
- case 2:
- case 3:
- case 4:
- {
- if (packet[0] == 'Z') {
- retval = watchpoint_add(target, address, size, wp_type, 0, 0xffffffffu);
- if (retval != ERROR_OK) {
- retval = gdb_error(connection, retval);
- if (retval != ERROR_OK)
- return retval;
- } else
- gdb_put_packet(connection, "OK", 2);
- } else {
- watchpoint_remove(target, address);
- gdb_put_packet(connection, "OK", 2);
- }
- break;
- }
- default:
- break;
- }
-
- return ERROR_OK;
- }
-
- /* print out a string and allocate more space as needed,
- * mainly used for XML at this point
- */
- static void xml_printf(int *retval, char **xml, int *pos, int *size,
- const char *fmt, ...)
- {
- if (*retval != ERROR_OK)
- return;
- int first = 1;
-
- for (;; ) {
- if ((*xml == NULL) || (!first)) {
- /* start by 0 to exercise all the code paths.
- * Need minimum 2 bytes to fit 1 char and 0 terminator. */
-
- *size = *size * 2 + 2;
- char *t = *xml;
- *xml = realloc(*xml, *size);
- if (*xml == NULL) {
- if (t)
- free(t);
- *retval = ERROR_SERVER_REMOTE_CLOSED;
- return;
- }
- }
-
- va_list ap;
- int ret;
- va_start(ap, fmt);
- ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
- va_end(ap);
- if ((ret > 0) && ((ret + 1) < *size - *pos)) {
- *pos += ret;
- return;
- }
- /* there was just enough or not enough space, allocate more. */
- first = 0;
- }
- }
-
- static int decode_xfer_read(char const *buf, char **annex, int *ofs, unsigned int *len)
- {
- /* 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. */
- char *separator;
- *ofs = strtoul(annex_end + 1, &separator, 16);
-
- if (*separator != ',')
- return ERROR_FAIL;
-
- *len = strtoul(separator + 1, NULL, 16);
-
- /* 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)
- {
- struct flash_bank *b1, *b2;
- b1 = *((struct flash_bank **)a);
- b2 = *((struct flash_bank **)b);
-
- if (b1->base == b2->base)
- return 0;
- else if (b1->base > b2->base)
- return 1;
- else
- return -1;
- }
-
- static int gdb_memory_map(struct connection *connection,
- 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
- * could detect the holes and mark them as RAM).
- * Normally we only execute this code once, but no big deal if we
- * have to regenerate it a couple of times.
- */
-
- struct target *target = get_target_from_connection(connection);
- struct flash_bank *p;
- char *xml = NULL;
- int size = 0;
- int pos = 0;
- int retval = ERROR_OK;
- struct flash_bank **banks;
- int offset;
- int length;
- char *separator;
- uint32_t ram_start = 0;
- int i;
- int target_flash_banks = 0;
-
- /* skip command character */
- packet += 23;
-
- offset = strtoul(packet, &separator, 16);
- length = strtoul(separator + 1, &separator, 16);
-
- xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
-
- /* 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;
- }
- banks[target_flash_banks++] = p;
- }
-
- qsort(banks, target_flash_banks, sizeof(struct flash_bank *),
- compare_bank);
-
- for (i = 0; i < target_flash_banks; i++) {
- int j;
- unsigned sector_size = 0;
- uint32_t start;
-
- p = banks[i];
- start = p->base;
-
- if (ram_start < p->base)
- xml_printf(&retval, &xml, &pos, &size,
- "<memory type=\"ram\" start=\"0x%x\" "
- "length=\"0x%x\"/>\n",
- ram_start, p->base - ram_start);
-
- /* Report adjacent groups of same-size sectors. So for
- * example top boot CFI flash will list an initial region
- * with several large sectors (maybe 128KB) and several
- * smaller ones at the end (maybe 32KB). STR7 will have
- * 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) {
- start = p->base + p->sectors[j].offset;
- xml_printf(&retval, &xml, &pos, &size,
- "<memory type=\"flash\" "
- "start=\"0x%x\" ",
- start);
- sector_size = 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
- continue;
-
- xml_printf(&retval, &xml, &pos, &size,
- "length=\"0x%x\">\n"
- "<property name=\"blocksize\">"
- "0x%x</property>\n"
- "</memory>\n",
- group_len,
- sector_size);
- sector_size = 0;
- }
-
- ram_start = p->base + p->size;
- }
-
- if (ram_start != 0)
- xml_printf(&retval, &xml, &pos, &size,
- "<memory type=\"ram\" start=\"0x%x\" "
- "length=\"0x%x\"/>\n",
- ram_start, 0-ram_start);
- /* ELSE a flash chip could be at the very end of the 32 bit address
- * space, in which case ram_start will be precisely 0
- */
-
- free(banks);
- banks = NULL;
-
- xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
-
- if (retval != ERROR_OK) {
- gdb_error(connection, retval);
- return retval;
- }
-
- if (offset + length > pos)
- length = pos - offset;
-
- char *t = malloc(length + 1);
- t[0] = 'l';
- memcpy(t + 1, xml + offset, length);
- gdb_put_packet(connection, t, length + 1);
-
- free(t);
- free(xml);
- return ERROR_OK;
- }
-
- static const char *gdb_get_reg_type_name(enum reg_type type)
- {
- switch (type) {
- 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_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 gdb_generate_reg_type_description(struct target *target,
- char **tdesc, int *pos, int *size, struct reg_data_type *type)
- {
- int retval = ERROR_OK;
-
- if (type->type_class == REG_TYPE_CLASS_VECTOR) {
- /* <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) {
- /* <union id="id">
- * <field name="name" type="type"/> ...
- * </union> */
- xml_printf(&retval, tdesc, pos, size,
- "<union id=\"%s\">\n",
- type->id);
-
- struct reg_data_type_union_field *field;
- 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\"/>\n",
- field->name, field->bitfield->start,
- field->bitfield->end);
-
- field = field->next;
- }
- } else {
- /* <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\"/>\n",
- field->name, field->bitfield->start, field->bitfield->end);
-
- 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;
- int feature_list_size = 0;
- char *tdesc = NULL;
- int pos = 0;
- int 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");
- 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. */
- gdb_generate_reg_type_description(target, &tdesc, &pos, &size,
- reg_list[i]->reg_data_type);
-
- 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);
-
- 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_query_packet(struct connection *connection,
- 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 (strncmp(packet, "qRcmd,", 6) == 0) {
- if (packet_size > 6) {
- char *cmd;
- cmd = malloc((packet_size - 6) / 2 + 1);
- int len = unhexify(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);
- target_call_timer_callbacks_now();
- /* some commands need to know the GDB connection, make note of current
- * GDB connection. */
- current_gdb_connection = gdb_connection;
- command_run_line(cmd_ctx, cmd);
- current_gdb_connection = NULL;
- target_call_timer_callbacks_now();
- log_remove_callback(gdb_log_callback, connection);
- free(cmd);
- }
- gdb_put_packet(connection, "OK", 2);
- return ERROR_OK;
- } 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;
- uint32_t len = 0;
-
- /* skip command character */
- packet += 5;
-
- addr = strtoul(packet, &separator, 16);
-
- if (*separator != ',') {
- LOG_ERROR("incomplete read memory packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- len = strtoul(separator + 1, NULL, 16);
-
- retval = target_checksum_memory(target, addr, len, &checksum);
-
- if (retval == ERROR_OK) {
- snprintf(gdb_reply, 10, "C%8.8" PRIx32 "", checksum);
- gdb_put_packet(connection, gdb_reply, 9);
- } else {
- retval = gdb_error(connection, retval);
- if (retval != ERROR_OK)
- return retval;
- }
-
- return ERROR_OK;
- }
- } else if (strncmp(packet, "qSupported", 10) == 0) {
- /* we currently support packet size and qXfer:memory-map:read (if enabled)
- * 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%c;QStartNoAckMode+",
- (GDB_BUFFER_SIZE - 1),
- ((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
- (gdb_target_desc_supported == 1) ? '+' : '-');
-
- if (retval != ERROR_OK) {
- gdb_send_error(connection, 01);
- return ERROR_OK;
- }
-
- gdb_put_packet(connection, buffer, strlen(buffer));
- free(buffer);
-
- return ERROR_OK;
- } 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 (strncmp(packet, "qXfer:features:read:", 20) == 0) {
- char *xml = NULL;
- int retval = ERROR_OK;
-
- int offset;
- unsigned int length;
-
- /* skip command character */
- packet += 20;
-
- if (decode_xfer_read(packet, NULL, &offset, &length) < 0) {
- gdb_send_error(connection, 01);
- return ERROR_OK;
- }
-
- /* 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, "QStartNoAckMode", 15) == 0) {
- gdb_connection->noack_mode = 1;
- gdb_put_packet(connection, "OK", 2);
- return ERROR_OK;
- }
-
- gdb_put_packet(connection, "", 0);
- return ERROR_OK;
- }
-
- static int gdb_v_packet(struct connection *connection,
- char const *packet, int packet_size)
- {
- struct gdb_connection *gdb_connection = connection->priv;
- struct gdb_service *gdb_service = connection->service->priv;
- int result;
-
- /* if flash programming disabled - send a empty reply */
-
- if (gdb_flash_program == 0) {
- gdb_put_packet(connection, "", 0);
- return ERROR_OK;
- }
-
- if (strncmp(packet, "vFlashErase:", 12) == 0) {
- unsigned long addr;
- unsigned long length;
-
- char const *parse = packet + 12;
- if (*parse == '\0') {
- LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- 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, (char **)&parse, 16);
-
- if (*parse != '\0') {
- LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- /* assume all sectors need erasing - stops any problems
- * when flash_write is called multiple times */
- flash_set_dirty();
-
- /* perform any target specific operations before the erase */
- target_call_event_callbacks(gdb_service->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);
-
- /* perform any target specific operations after the erase */
- target_call_event_callbacks(gdb_service->target,
- TARGET_EVENT_GDB_FLASH_ERASE_END);
-
- /* perform erase */
- if (result != ERROR_OK) {
- /* GDB doesn't evaluate the actual error number returned,
- * treat a failed erase as an I/O error
- */
- gdb_send_error(connection, EIO);
- LOG_ERROR("flash_erase returned %i", result);
- } else
- gdb_put_packet(connection, "OK", 2);
-
- return ERROR_OK;
- }
-
- if (strncmp(packet, "vFlashWrite:", 12) == 0) {
- int retval;
- unsigned long addr;
- unsigned long length;
- char const *parse = packet + 12;
-
- if (*parse == '\0') {
- LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
- addr = strtoul(parse, (char **)&parse, 16);
- if (*(parse++) != ':') {
- LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
- length = packet_size - (parse - packet);
-
- /* create a new image if there isn't already one */
- if (gdb_connection->vflash_image == NULL) {
- gdb_connection->vflash_image = malloc(sizeof(struct image));
- image_open(gdb_connection->vflash_image, "", "build");
- }
-
- /* create new section with content from packet buffer */
- retval = image_add_section(gdb_connection->vflash_image,
- addr, length, 0x0, (uint8_t const *)parse);
- if (retval != ERROR_OK)
- return retval;
-
- gdb_put_packet(connection, "OK", 2);
-
- return ERROR_OK;
- }
-
- 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_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);
- if (result != ERROR_OK) {
- if (result == ERROR_FLASH_DST_OUT_OF_BANK)
- gdb_put_packet(connection, "E.memtype", 9);
- else
- gdb_send_error(connection, EIO);
- } else {
- LOG_DEBUG("wrote %u bytes from vFlash image to flash", (unsigned)written);
- gdb_put_packet(connection, "OK", 2);
- }
-
- image_close(gdb_connection->vflash_image);
- free(gdb_connection->vflash_image);
- gdb_connection->vflash_image = NULL;
-
- return ERROR_OK;
- }
-
- gdb_put_packet(connection, "", 0);
- return ERROR_OK;
- }
-
- static int gdb_detach(struct connection *connection)
- {
- struct gdb_service *gdb_service = connection->service->priv;
-
- target_call_event_callbacks(gdb_service->target, 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;
-
- LOG_DEBUG("-");
-
- 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,
- const char *function, const char *string)
- {
- struct connection *connection = priv;
- struct gdb_connection *gdb_con = connection->priv;
-
- if (gdb_con->busy) {
- /* do not reply this using the O packet */
- return;
- }
-
- gdb_output_con(connection, string);
- }
-
- static void gdb_sig_halted(struct connection *connection)
- {
- char sig_reply[4];
- snprintf(sig_reply, 4, "T%2.2x", 2);
- gdb_put_packet(connection, sig_reply, 3);
- }
-
- static int gdb_input_inner(struct connection *connection)
- {
- /* 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 const *packet = gdb_packet_buffer;
- int packet_size;
- int retval;
- struct gdb_connection *gdb_con = connection->priv;
- static int extended_protocol;
-
- /* drain input buffer. If one of the packets fail, then an error
- * packet is replied, if applicable.
- *
- * This loop will terminate and the error code is returned.
- *
- * The calling fn will check if this error is something that
- * can be recovered from, or if the connection must be closed.
- *
- * If the error is recoverable, this fn is called again to
- * drain the rest of the buffer.
- */
- do {
- packet_size = GDB_BUFFER_SIZE-1;
- retval = gdb_get_packet(connection, gdb_packet_buffer, &packet_size);
- if (retval != ERROR_OK)
- return retval;
-
- /* terminate with zero */
- gdb_packet_buffer[packet_size] = '\0';
-
- if (LOG_LEVEL_IS(LOG_LVL_DEBUG)) {
- if (packet[0] == 'X') {
- /* binary packets spew junk into the debug log stream */
- char buf[50];
- int x;
- for (x = 0; (x < 49) && (packet[x] != ':'); x++)
- buf[x] = packet[x];
- buf[x] = 0;
- LOG_DEBUG("received packet: '%s:<binary-data>'", buf);
- } else
- LOG_DEBUG("received packet: '%s'", packet);
- }
-
- if (packet_size > 0) {
- retval = ERROR_OK;
- switch (packet[0]) {
- case 'T': /* Is thread alive? */
- gdb_thread_packet(connection, packet, packet_size);
- break;
- case 'H': /* Set current thread ( 'c' for step and continue,
- * 'g' for all other operations ) */
- gdb_thread_packet(connection, packet, packet_size);
- break;
- case 'q':
- case 'Q':
- retval = gdb_thread_packet(connection, packet, packet_size);
- if (retval == GDB_THREAD_PACKET_NOT_CONSUMED)
- retval = gdb_query_packet(connection, packet, packet_size);
- break;
- case 'g':
- retval = gdb_get_registers_packet(connection, packet, packet_size);
- break;
- case 'G':
- retval = gdb_set_registers_packet(connection, packet, packet_size);
- break;
- case 'p':
- retval = gdb_get_register_packet(connection, packet, packet_size);
- break;
- case 'P':
- retval = gdb_set_register_packet(connection, packet, packet_size);
- break;
- case 'm':
- retval = gdb_read_memory_packet(connection, packet, packet_size);
- break;
- case 'M':
- retval = gdb_write_memory_packet(connection, packet, packet_size);
- break;
- case 'z':
- case 'Z':
- retval = gdb_breakpoint_watchpoint_packet(connection, packet, packet_size);
- break;
- case '?':
- gdb_last_signal_packet(connection, packet, packet_size);
- break;
- case 'c':
- case 's':
- {
- gdb_thread_packet(connection, packet, packet_size);
- log_add_callback(gdb_log_callback, connection);
-
- if (gdb_con->mem_write_error) {
- LOG_ERROR("Memory write failure!");
-
- /* now that we have reported the memory write error,
- * we can clear the condition */
- gdb_con->mem_write_error = false;
- }
-
- bool nostep = false;
- bool already_running = false;
- if (target->state == TARGET_RUNNING) {
- LOG_WARNING("WARNING! The target is already running. "
- "All changes GDB did to registers will be discarded! "
- "Waiting for target to halt.");
- already_running = true;
- } else if (target->state != TARGET_HALTED) {
- LOG_WARNING("The target is not in the halted nor running stated, " \
- "stepi/continue ignored.");
- nostep = true;
- } else if ((packet[0] == 's') && gdb_con->sync) {
- /* Hmm..... when you issue a continue in GDB, then a "stepi" is
- * sent by GDB first to OpenOCD, thus defeating the check to
- * make only the single stepping have the sync feature...
- */
- nostep = true;
- LOG_WARNING("stepi ignored. GDB will now fetch the register state " \
- "from the target.");
- }
- gdb_con->sync = false;
-
- if (!already_running && nostep) {
- /* Either the target isn't in the halted state, then we can't
- * step/continue. This might be early setup, etc.
- *
- * Or we want to allow GDB to pick up a fresh set of
- * register values without modifying the target state.
- *
- */
- gdb_sig_halted(connection);
-
- /* stop forwarding log packets! */
- log_remove_callback(gdb_log_callback, connection);
- } else {
- /* We're running/stepping, in which case we can
- * forward log output until the target is halted
- */
- gdb_con->frontend_state = TARGET_RUNNING;
- target_call_event_callbacks(target, TARGET_EVENT_GDB_START);
-
- if (!already_running) {
- /* Here we don't want packet processing to stop even if this fails,
- * so we use a local variable instead of retval. */
- retval = gdb_step_continue_packet(connection, packet, packet_size);
- if (retval != ERROR_OK) {
- /* we'll never receive a halted
- * condition... issue a false one..
- */
- gdb_frontend_halted(target, connection);
- }
- }
- }
- }
- break;
- case 'v':
- retval = gdb_v_packet(connection, packet, packet_size);
- break;
- case 'D':
- retval = gdb_detach(connection);
- extended_protocol = 0;
- break;
- case 'X':
- retval = gdb_write_memory_binary_packet(connection, packet, packet_size);
- if (retval != ERROR_OK)
- return retval;
- break;
- case 'k':
- if (extended_protocol != 0) {
- gdb_con->attached = false;
- break;
- }
- gdb_put_packet(connection, "OK", 2);
- return ERROR_SERVER_REMOTE_CLOSED;
- case '!':
- /* handle extended remote protocol */
- extended_protocol = 1;
- gdb_put_packet(connection, "OK", 2);
- break;
- case 'R':
- /* handle extended restart packet */
- breakpoint_clear_target(gdb_service->target);
- watchpoint_clear_target(gdb_service->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);
- break;
-
- case 'j':
- /* packet supported only by smp target i.e cortex_a.c*/
- /* handle smp packet replying coreid played to gbd */
- gdb_read_smp_packet(connection, packet, packet_size);
- break;
-
- case 'J':
- /* packet supported only by smp target i.e cortex_a.c */
- /* handle smp packet setting coreid to be played at next
- * resume to gdb */
- 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]);
- gdb_put_packet(connection, NULL, 0);
- break;
- }
-
- /* if a packet handler returned an error, exit input loop */
- if (retval != ERROR_OK)
- return retval;
- }
-
- if (gdb_con->ctrl_c) {
- if (target->state == TARGET_RUNNING) {
- retval = target_halt(target);
- if (retval != ERROR_OK)
- target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
- gdb_con->ctrl_c = 0;
- } else {
- LOG_INFO("The target is not running when halt was requested, stopping GDB.");
- target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
- }
- }
-
- } while (gdb_con->buf_cnt > 0);
-
- return ERROR_OK;
- }
-
- static int gdb_input(struct connection *connection)
- {
- int retval = gdb_input_inner(connection);
- struct gdb_connection *gdb_con = connection->priv;
- if (retval == ERROR_SERVER_REMOTE_CLOSED)
- return retval;
-
- /* logging does not propagate the error, yet can set the gdb_con->closed flag */
- if (gdb_con->closed)
- return ERROR_SERVER_REMOTE_CLOSED;
-
- /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
- return ERROR_OK;
- }
-
- static int gdb_target_start(struct target *target, const char *port)
- {
- struct gdb_service *gdb_service;
- int ret;
- gdb_service = malloc(sizeof(struct gdb_service));
-
- if (NULL == gdb_service)
- return -ENOMEM;
-
- gdb_service->target = target;
- gdb_service->core[0] = -1;
- gdb_service->core[1] = -1;
- target->gdb_service = gdb_service;
-
- ret = add_service("gdb",
- port, 1, &gdb_new_connection, &gdb_input,
- &gdb_connection_closed, gdb_service);
- /* initialialize all targets gdb service with the same pointer */
- {
- struct target_list *head;
- struct target *curr;
- head = target->head;
- while (head != (struct target_list *)NULL) {
- curr = head->target;
- if (curr != target)
- curr->gdb_service = gdb_service;
- head = head->next;
- }
- }
- return ret;
- }
-
- static int gdb_target_add_one(struct target *target)
- {
- /* one gdb instance per smp list */
- if ((target->smp) && (target->gdb_service))
- return ERROR_OK;
- int retval = gdb_target_start(target, gdb_port_next);
- if (retval == ERROR_OK) {
- long portnumber;
- /* If we can parse the port number
- * then we increment the port number for the next target.
- */
- char *end;
- portnumber = strtol(gdb_port_next, &end, 0);
- if (!*end) {
- if (parse_long(gdb_port_next, &portnumber) == ERROR_OK) {
- free(gdb_port_next);
- gdb_port_next = alloc_printf("%d", portnumber+1);
- }
- }
- }
- return retval;
- }
-
- int gdb_target_add_all(struct target *target)
- {
- if (NULL == target) {
- LOG_WARNING("gdb services need one or more targets defined");
- return ERROR_OK;
- }
-
- while (NULL != target) {
- int retval = gdb_target_add_one(target);
- if (ERROR_OK != retval)
- return retval;
-
- target = target->next;
- }
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(handle_gdb_sync_command)
- {
- if (CMD_ARGC != 0)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- if (current_gdb_connection == NULL) {
- command_print(CMD_CTX,
- "gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
- return ERROR_FAIL;
- }
-
- current_gdb_connection->sync = true;
-
- return ERROR_OK;
- }
-
- /* daemon configuration command gdb_port */
- COMMAND_HANDLER(handle_gdb_port_command)
- {
- int retval = CALL_COMMAND_HANDLER(server_pipe_command, &gdb_port);
- if (ERROR_OK == retval) {
- free(gdb_port_next);
- gdb_port_next = strdup(gdb_port);
- }
- return retval;
- }
-
- COMMAND_HANDLER(handle_gdb_memory_map_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_ENABLE(CMD_ARGV[0], gdb_use_memory_map);
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(handle_gdb_flash_program_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_ENABLE(CMD_ARGV[0], gdb_flash_program);
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(handle_gdb_report_data_abort_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_ENABLE(CMD_ARGV[0], gdb_report_data_abort);
- return ERROR_OK;
- }
-
- /* gdb_breakpoint_override */
- COMMAND_HANDLER(handle_gdb_breakpoint_override_command)
- {
- if (CMD_ARGC == 0) {
- /* nothing */
- } else if (CMD_ARGC == 1) {
- gdb_breakpoint_override = 1;
- if (strcmp(CMD_ARGV[0], "hard") == 0)
- gdb_breakpoint_override_type = BKPT_HARD;
- else if (strcmp(CMD_ARGV[0], "soft") == 0)
- gdb_breakpoint_override_type = BKPT_SOFT;
- else if (strcmp(CMD_ARGV[0], "disable") == 0)
- gdb_breakpoint_override = 0;
- } else
- return ERROR_COMMAND_SYNTAX_ERROR;
- if (gdb_breakpoint_override)
- LOG_USER("force %s breakpoints",
- (gdb_breakpoint_override_type == BKPT_HARD) ? "hard" : "soft");
- else
- LOG_USER("breakpoint type is not overridden");
-
- 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",
- .handler = handle_gdb_sync_command,
- .mode = COMMAND_ANY,
- .help = "next stepi will return immediately allowing "
- "GDB to fetch register state without affecting "
- "target state",
- .usage = ""
- },
- {
- .name = "gdb_port",
- .handler = handle_gdb_port_command,
- .mode = COMMAND_ANY,
- .help = "Normally gdb listens to a TCP/IP port. Each subsequent GDB "
- "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 "
- "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]",
- },
- {
- .name = "gdb_memory_map",
- .handler = handle_gdb_memory_map_command,
- .mode = COMMAND_CONFIG,
- .help = "enable or disable memory map",
- .usage = "('enable'|'disable')"
- },
- {
- .name = "gdb_flash_program",
- .handler = handle_gdb_flash_program_command,
- .mode = COMMAND_CONFIG,
- .help = "enable or disable flash program",
- .usage = "('enable'|'disable')"
- },
- {
- .name = "gdb_report_data_abort",
- .handler = handle_gdb_report_data_abort_command,
- .mode = COMMAND_CONFIG,
- .help = "enable or disable reporting data aborts",
- .usage = "('enable'|'disable')"
- },
- {
- .name = "gdb_breakpoint_override",
- .handler = handle_gdb_breakpoint_override_command,
- .mode = COMMAND_ANY,
- .help = "Display or specify type of breakpoint "
- "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
- };
-
- int gdb_register_commands(struct command_context *cmd_ctx)
- {
- gdb_port = strdup("3333");
- gdb_port_next = strdup("3333");
- return register_commands(cmd_ctx, NULL, gdb_command_handlers);
- }
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