* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
- * Copyright (C) 2007,2008 Øyvind Harboe *
+ * 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 *
* 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. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include "breakpoints.h"
-#include "target_request.h"
-#include "register.h"
+#include <target/breakpoints.h>
+#include <target/target_request.h>
+#include <target/register.h>
#include "server.h"
-#include "flash.h"
+#include <flash/nor/core.h>
#include "gdb_server.h"
-#include "image.h"
-#include "jtag.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.
+ */
+/* 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;
+};
#if 0
#define _DEBUG_GDB_IO_
static int gdb_breakpoint_override;
static enum breakpoint_type gdb_breakpoint_override_type;
-extern int gdb_error(struct connection *connection, int retval);
-static unsigned short gdb_port = 3333;
-static const char *DIGITS = "0123456789abcdef";
+static int gdb_error(struct connection *connection, int retval);
+static const char *gdb_port;
+static const 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 supress gdb related debugging spam
+/* 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*/
-int gdb_use_memory_map = 1;
+static int gdb_use_memory_map = 1;
/* enabled by default*/
-int gdb_flash_program = 1;
+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 */
-int gdb_report_data_abort = 0;
+ * see the code in gdb_read_memory_packet() for further explanations.
+ * Disabled by default.
+ */
+static int gdb_report_data_abort;
-int gdb_last_signal(struct target *target)
+/* 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)
- {
+ switch (target->debug_reason) {
case DBG_REASON_DBGRQ:
- return 0x2; /* SIGINT */
+ return 0x2; /* SIGINT */
case DBG_REASON_BREAKPOINT:
case DBG_REASON_WATCHPOINT:
case DBG_REASON_WPTANDBKPT:
- return 0x05; /* SIGTRAP */
+ return 0x05; /* SIGTRAP */
case DBG_REASON_SINGLESTEP:
- return 0x05; /* SIGTRAP */
+ return 0x05; /* SIGTRAP */
case DBG_REASON_NOTHALTED:
- return 0x0; /* no signal... shouldn't happen */
+ return 0x0; /* no signal... shouldn't happen */
default:
- LOG_USER("undefined debug reason %d - target needs reset", target->debug_reason);
+ LOG_USER("undefined debug reason %d - target needs reset",
+ target->debug_reason);
return 0x0;
}
}
-int check_pending(struct connection *connection, int timeout_s, int *got_data)
+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 gdb_connection *gdb_con = connection->priv;
int t;
if (got_data == NULL)
- got_data=&t;
+ got_data = &t;
*got_data = 0;
- if (gdb_con->buf_cnt > 0)
- {
+ if (gdb_con->buf_cnt > 0) {
*got_data = 1;
return ERROR_OK;
}
tv.tv_sec = timeout_s;
tv.tv_usec = 0;
- if (socket_select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 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
- {
+ else
return ERROR_OK;
- }
}
*got_data = FD_ISSET(connection->fd, &read_fds) != 0;
return ERROR_OK;
}
-int gdb_get_char(struct connection *connection, int* next_char)
+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
-
- if (gdb_con->buf_cnt-- > 0)
- {
- *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 ERROR_OK;
- }
-
- for (;;)
- {
- if (connection->service->type == CONNECTION_PIPE)
- {
+ for (;; ) {
+ if (connection->service->type != CONNECTION_TCP)
gdb_con->buf_cnt = read(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
- }
- else
- {
+ 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);
+ 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)
- {
+ if (gdb_con->buf_cnt == 0) {
gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
}
#ifdef _WIN32
errno = WSAGetLastError();
- switch (errno)
- {
+ switch (errno) {
case WSAEWOULDBLOCK:
usleep(1000);
break;
exit(-1);
}
#else
- switch (errno)
- {
+ switch (errno) {
case EAGAIN:
usleep(1000);
break;
}
#ifdef _DEBUG_GDB_IO_
- debug_buffer = malloc(gdb_con->buf_cnt + 1);
- memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt);
- debug_buffer[gdb_con->buf_cnt] = 0;
+ debug_buffer = strndup(gdb_con->buffer, gdb_con->buf_cnt);
LOG_DEBUG("received '%s'", debug_buffer);
free(debug_buffer);
#endif
return retval;
}
-int gdb_putback_char(struct connection *connection, int last_char)
+/**
+ * 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;
- if (gdb_con->buf_p > gdb_con->buffer)
- {
+ 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
- {
+ } 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! */
-int gdb_write(struct connection *connection, void *data, int len)
+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->service->type == CONNECTION_PIPE)
- {
- /* write to stdout */
- if (write(STDOUT_FILENO, data, len) == len)
- {
- return ERROR_OK;
- }
- }
- else
- {
- if (write_socket(connection->fd, data, len) == len)
- {
- return ERROR_OK;
- }
- }
+ if (connection_write(connection, data, len) == len)
+ return ERROR_OK;
gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
}
-int gdb_put_packet_inner(struct connection *connection, char *buffer, int len)
+static int gdb_put_packet_inner(struct connection *connection,
+ char *buffer, int len)
{
int i;
unsigned char my_checksum = 0;
* an ACK (+) for everything we've sent off.
*/
int gotdata;
- for (;;)
- {
- if ((retval = check_pending(connection, 0, &gotdata)) != ERROR_OK)
+ for (;; ) {
+ retval = check_pending(connection, 0, &gotdata);
+ if (retval != ERROR_OK)
return retval;
if (!gotdata)
break;
- if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
+ retval = gdb_get_char(connection, &reply);
+ if (retval != ERROR_OK)
return retval;
if (reply == '$') {
/* fix a problem with some IAR tools */
}
#endif
- while (1)
- {
+ while (1) {
#ifdef _DEBUG_GDB_IO_
- debug_buffer = malloc(len + 1);
- memcpy(debug_buffer, buffer, len);
- debug_buffer[len] = 0;
+ debug_buffer = strndup(buffer, len);
LOG_DEBUG("sending packet '$%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))
- {
+ 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];
- if ((retval = gdb_write(connection, local_buffer, len)) != ERROR_OK)
- {
+ 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
- {
+ } 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];
- if ((retval = gdb_write(connection, local_buffer, 1)) != ERROR_OK)
- {
+ * 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;
- }
- if ((retval = gdb_write(connection, buffer, len)) != ERROR_OK)
- {
+ retval = gdb_write(connection, buffer, len);
+ if (retval != ERROR_OK)
return retval;
- }
- if ((retval = gdb_write(connection, local_buffer + 1, 3)) != ERROR_OK)
- {
+ retval = gdb_write(connection, local_buffer + 1, 3);
+ if (retval != ERROR_OK)
return retval;
- }
}
if (gdb_con->noack_mode)
break;
- if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
+ retval = gdb_get_char(connection, &reply);
+ if (retval != ERROR_OK)
return retval;
if (reply == '+')
break;
- else if (reply == '-')
- {
+ 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)
- {
+ } else if (reply == 0x3) {
gdb_con->ctrl_c = 1;
- if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
+ retval = gdb_get_char(connection, &reply);
+ if (retval != ERROR_OK)
return retval;
if (reply == '+')
break;
- else if (reply == '-')
- {
+ else if (reply == '-') {
/* Stop sending output packets for now */
log_remove_callback(gdb_log_callback, connection);
LOG_WARNING("negative reply, retrying");
- }
- else if (reply == '$') {
+ } else if (reply == '$') {
LOG_ERROR("GDB missing ack(1) - assumed good");
gdb_putback_char(connection, reply);
return ERROR_OK;
} else {
-
LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply);
gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
}
- }
- else if (reply == '$') {
+ } 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);
+ } else {
+ LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection",
+ reply);
gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
}
return retval;
}
-static __inline__ int fetch_packet(struct connection *connection, int *checksum_ok, int noack, int *len, char *buffer)
+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;
+ int retval = ERROR_OK;
struct gdb_connection *gdb_con = connection->priv;
my_checksum = 0;
int count = 0;
count = 0;
- for (;;)
- {
+
+ /* 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 ((gdb_con->buf_cnt > 2) && ((gdb_con->buf_cnt + count) < *len))
- {
+ 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 = gdb_con->buf_p;
- int run = gdb_con->buf_cnt - 2;
+ char *buf = buf_p;
+ int run = buf_cnt - 2;
i = 0;
int done = 0;
- while (i < run)
- {
+ while (i < run) {
character = *buf++;
i++;
- if (character == '#')
- {
+ if (character == '#') {
/* Danger! character can be '#' when esc is
- * used so we need an explicit boolean for done here.
- */
+ * used so we need an explicit boolean for done here. */
done = 1;
break;
}
- if (character == '}')
- {
+ if (character == '}') {
/* data transmitted in binary mode (X packet)
* uses 0x7d as escape character */
my_checksum += character & 0xff;
i++;
my_checksum += character & 0xff;
buffer[count++] = (character ^ 0x20) & 0xff;
- }
- else
- {
+ } else {
my_checksum += character & 0xff;
buffer[count++] = character & 0xff;
}
}
- gdb_con->buf_p += i;
- gdb_con->buf_cnt -= i;
+ buf_p += i;
+ buf_cnt -= i;
if (done)
break;
}
- if (count > *len)
- {
+ if (count > *len) {
LOG_ERROR("packet buffer too small");
- return ERROR_GDB_BUFFER_TOO_SMALL;
+ retval = ERROR_GDB_BUFFER_TOO_SMALL;
+ break;
}
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
- return retval;
+ retval = gdb_get_char_fast(connection, &character, &buf_p, &buf_cnt);
+ if (retval != ERROR_OK)
+ break;
if (character == '#')
break;
- if (character == '}')
- {
+ if (character == '}') {
/* data transmitted in binary mode (X packet)
* uses 0x7d as escape character */
my_checksum += character & 0xff;
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
- return retval;
+
+ 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
- {
+ } 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;
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ retval = gdb_get_char(connection, &character);
+ if (retval != ERROR_OK)
return retval;
checksum[0] = character;
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ 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;
}
-int gdb_get_packet_inner(struct connection *connection, char *buffer, int *len)
+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
- {
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ 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)
- {
+ switch (character) {
case '$':
break;
case '+':
- /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c)
- * incase anyone tries to debug why they receive this warning every time */
+ /* 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");
break;
case '-':
}
} 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)
- {
- if ((retval = fetch_packet(connection, &checksum_ok, 1, len, buffer)) != ERROR_OK)
+ * calculating checksum */
+ if (gdb_con->noack_mode) {
+ retval = fetch_packet(connection, &checksum_ok, 1, len, buffer);
+ if (retval != ERROR_OK)
return retval;
- } else
- {
- if ((retval = fetch_packet(connection, &checksum_ok, 0, len, buffer)) != ERROR_OK)
+ } else {
+ retval = fetch_packet(connection, &checksum_ok, 0, len, buffer);
+ if (retval != ERROR_OK)
return retval;
}
- if (gdb_con->noack_mode)
- {
+ if (gdb_con->noack_mode) {
/* checksum is not checked in noack mode */
break;
}
- if (checksum_ok)
- {
- if ((retval = gdb_write(connection, "+", 1)) != ERROR_OK)
- {
+ if (checksum_ok) {
+ retval = gdb_write(connection, "+", 1);
+ if (retval != ERROR_OK)
return retval;
- }
break;
}
}
return ERROR_OK;
}
-int gdb_get_packet(struct connection *connection, char *buffer, int *len)
+static int gdb_get_packet(struct connection *connection, char *buffer, int *len)
{
struct gdb_connection *gdb_con = connection->priv;
gdb_con->busy = 1;
return retval;
}
-int gdb_output_con(struct connection *connection, const char* line)
+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);
+ 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;
}
-int gdb_output(struct command_context *context, const char* line)
+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:%08x;", hit_wp_address);
+ break;
+ case WPT_READ:
+ snprintf(stop_reason, sizeof(stop_reason),
+ "rwatch:%08x;", hit_wp_address);
+ break;
+ case WPT_ACCESS:
+ snprintf(stop_reason, sizeof(stop_reason),
+ "awatch:%08x;", 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,%x/%x,%x,%x", 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,%x", target->fileio_info->identifier,
+ target->fileio_info->param_1);
+ else if (strcmp(target->fileio_info->identifier, "read") == 0)
+ sprintf(fileio_command, "F%s,%x,%x,%x", 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,%x,%x,%x", 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,%x,%x,%x", 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,%x/%x,%x/%x", 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,%x/%x", 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,%x/%x,%x", 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,%x,%x", 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,%x,%x", 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,%x", target->fileio_info->identifier,
+ target->fileio_info->param_1);
+ else if (strcmp(target->fileio_info->identifier, "system") == 0)
+ sprintf(fileio_command, "F%s,%x/%x", 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%02x", 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)
{
* 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)
- {
- char sig_reply[4];
- int signal;
-
+ if (gdb_connection->frontend_state == TARGET_RUNNING) {
/* stop forwarding log packets! */
log_remove_callback(gdb_log_callback, connection);
- if (gdb_connection->ctrl_c)
- {
- signal = 0x2;
- gdb_connection->ctrl_c = 0;
- }
+ /* check fileio first */
+ if (target_get_gdb_fileio_info(target, target->fileio_info) == ERROR_OK)
+ gdb_fileio_reply(target, connection);
else
- {
- signal = gdb_last_signal(target);
- }
-
- snprintf(sig_reply, 4, "T%2.2x", signal);
- gdb_put_packet(connection, sig_reply, 3);
- gdb_connection->frontend_state = TARGET_HALTED;
+ gdb_signal_reply(target, connection);
}
}
-int gdb_target_callback_event_handler(struct target *target, enum target_event event, void *priv)
+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;
- target_handle_event(target, event);
- switch (event)
- {
+ if (gdb_service->target != target)
+ return ERROR_OK;
+
+ switch (event) {
case TARGET_EVENT_GDB_HALT:
gdb_frontend_halted(target, connection);
break;
target_call_event_callbacks(target, TARGET_EVENT_GDB_END);
break;
case TARGET_EVENT_GDB_FLASH_ERASE_START:
- target_handle_event(target, TARGET_EVENT_OLD_gdb_program_config);
- if ((retval = jtag_execute_queue()) != ERROR_OK)
- {
+ retval = jtag_execute_queue();
+ if (retval != ERROR_OK)
return retval;
- }
break;
default:
break;
return ERROR_OK;
}
-int gdb_new_connection(struct connection *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;
gdb_connection->closed = 0;
gdb_connection->busy = 0;
gdb_connection->noack_mode = 0;
- gdb_connection->sync = true;
+ gdb_connection->sync = false;
+ gdb_connection->mem_write_error = false;
+ gdb_connection->attached = true;
/* send ACK to GDB for debug request */
gdb_write(connection, "+", 1);
breakpoint_clear_target(gdb_service->target);
watchpoint_clear_target(gdb_service->target);
- /* register callback to be informed about target events */
- target_register_event_callback(gdb_target_callback_event_handler, connection);
+ /* 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 */
- if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
+ retval = gdb_get_char(connection, &initial_ack);
+ if (retval != ERROR_OK)
return retval;
/* FIX!!!??? would we actually ever receive a + here???
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;
+ 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,
- gdb_service->target->cmd_name,
- target_state_name(gdb_service->target));
+ 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;
}
-int gdb_connection_closed(struct connection *connection)
+static int gdb_connection_closed(struct connection *connection)
{
struct gdb_service *gdb_service = connection->service->priv;
struct gdb_connection *gdb_connection = connection->priv;
gdb_actual_connections--;
LOG_DEBUG("GDB Close, Target: %s, state: %s, gdb_actual_connections=%d",
- gdb_service->target->cmd_name,
- target_state_name(gdb_service->target),
- gdb_actual_connections);
+ 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)
- {
+ 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)
- {
+ if (connection->priv) {
free(connection->priv);
connection->priv = NULL;
- }
- else
- {
+ } else
LOG_ERROR("BUG: connection->priv == NULL");
- }
-
target_unregister_event_callback(gdb_target_callback_event_handler, connection);
return ERROR_OK;
}
-void gdb_send_error(struct connection *connection, uint8_t the_error)
+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);
}
-int gdb_last_signal_packet(struct connection *connection, struct target *target, char* packet, int packet_size)
+static int gdb_last_signal_packet(struct connection *connection,
+ char *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;
+ 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 = gdb_last_signal(target);
+ signal_var = gdb_last_signal(target);
- snprintf(sig_reply, 4, "S%2.2x", signal);
+ snprintf(sig_reply, 4, "S%2.2x", signal_var);
gdb_put_packet(connection, sig_reply, 3);
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;
* 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 endianess
+ * NB! the format on the wire is the target endianness
*
* The format of reg->value is little endian
*
*/
-void gdb_str_to_target(struct target *target, char *tstr, struct reg *reg)
+static void gdb_str_to_target(struct target *target,
+ char *tstr, struct reg *reg)
{
int i;
buf = reg->value;
buf_len = DIV_ROUND_UP(reg->size, 8);
- for (i = 0; i < buf_len; i++)
- {
+ 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];
- }
-}
-
-static int hextoint(char c)
-{
- if (c>='0'&&c<='9')
- {
- return c-'0';
+ tstr += sprintf(tstr, "%02x", buf[j]);
}
- 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 */
-void gdb_target_to_reg(struct target *target, char *tstr, int str_len, uint8_t *bin)
+static void gdb_target_to_reg(struct target *target,
+ char *tstr, int str_len, uint8_t *bin)
{
- if (str_len % 2)
- {
+ 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)
- {
- uint8_t t = hextoint(tstr[i]) << 4;
- t |= hextoint(tstr[i + 1]);
+ 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;
}
}
-int gdb_get_registers_packet(struct connection *connection, struct target *target, char* packet, int packet_size)
+static int gdb_get_registers_packet(struct connection *connection,
+ char *packet, int packet_size)
{
+ struct target *target = get_target_from_connection(connection);
struct reg **reg_list;
int reg_list_size;
int retval;
LOG_DEBUG("-");
#endif
- if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
- {
+ 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 += reg_list[i]->size;
- }
+ reg_packet_size += DIV_ROUND_UP(reg_list[i]->size, 8) * 2;
- reg_packet = malloc(DIV_ROUND_UP(reg_packet_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++)
- {
+ 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;
- reg_packet_p = strndup(reg_packet, DIV_ROUND_UP(reg_packet_size, 8) * 2);
- LOG_DEBUG("reg_packet: %s", reg_packet_p);
- free(reg_packet_p);
+ 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, DIV_ROUND_UP(reg_packet_size, 8) * 2);
+ gdb_put_packet(connection, reg_packet, reg_packet_size);
free(reg_packet);
free(reg_list);
return ERROR_OK;
}
-int gdb_set_registers_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_set_registers_packet(struct connection *connection,
+ char *packet, int packet_size)
{
+ struct target *target = get_target_from_connection(connection);
int i;
struct reg **reg_list;
int reg_list_size;
packet++;
packet_size--;
- if (packet_size % 2)
- {
+ if (packet_size % 2) {
LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
- if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
- {
+ 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++)
- {
+ 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);
/* advance packet pointer */
packet_p += chars;
-
free(bin_buf);
}
return ERROR_OK;
}
-int gdb_get_register_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_get_register_packet(struct connection *connection,
+ char *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;
LOG_DEBUG("-");
#endif
- if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
- {
+ 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)
- {
+ if (reg_list_size <= reg_num) {
LOG_ERROR("gdb requested a non-existing register");
- exit(-1);
+ return ERROR_SERVER_REMOTE_CLOSED;
}
- reg_packet = malloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2);
+ 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]);
return ERROR_OK;
}
-int gdb_set_register_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_set_register_packet(struct connection *connection,
+ char *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);
LOG_DEBUG("-");
- if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
- {
+ 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)
- {
+ if (reg_list_size <= reg_num) {
LOG_ERROR("gdb requested a non-existing register");
return ERROR_SERVER_REMOTE_CLOSED;
}
- if (*separator != '=')
- {
+ if (*separator != '=') {
LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
return ERROR_SERVER_REMOTE_CLOSED;
}
bin_buf = malloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8));
int chars = (DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2);
- /* fix!!! add some sanity checks on packet size here */
+ 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);
return ERROR_OK;
}
-int gdb_error(struct connection *connection, int retval)
+/* 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)
{
- switch (retval)
- {
- case ERROR_TARGET_DATA_ABORT:
- gdb_send_error(connection, EIO);
- break;
- case ERROR_TARGET_TRANSLATION_FAULT:
- gdb_send_error(connection, EFAULT);
- break;
- case ERROR_TARGET_UNALIGNED_ACCESS:
- gdb_send_error(connection, EFAULT);
- break;
- case ERROR_TARGET_NOT_HALTED:
- gdb_send_error(connection, EFAULT);
- break;
- default:
- /* This could be that the target reset itself. */
- LOG_ERROR("unexpected error %i", retval);
- gdb_send_error(connection, EFAULT);
- break;
- }
-
+ LOG_DEBUG("Reporting %i to GDB as generic error", retval);
+ gdb_send_error(connection, EFAULT);
return ERROR_OK;
}
*
* 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
*/
-int gdb_read_memory_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_read_memory_packet(struct connection *connection,
+ char *packet, int packet_size)
{
+ struct target *target = get_target_from_connection(connection);
char *separator;
uint32_t addr = 0;
uint32_t len = 0;
addr = strtoul(packet, &separator, 16);
- if (*separator != ',')
- {
+ if (*separator != ',') {
LOG_ERROR("incomplete read memory packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
retval = target_read_buffer(target, addr, len, buffer);
- if ((retval != ERROR_OK)&&!gdb_report_data_abort)
- {
+ 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.
*
* 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
+ * 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.
retval = ERROR_OK;
}
- if (retval == ERROR_OK)
- {
+ 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];
- }
+ int pkt_len = hexify(hex_buffer, (char *)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
- {
+ } else
retval = gdb_error(connection, retval);
- }
free(buffer);
return retval;
}
-int gdb_write_memory_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_write_memory_packet(struct connection *connection,
+ char *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;
-
- uint32_t i;
int retval;
/* skip command character */
addr = strtoul(packet, &separator, 16);
- if (*separator != ',')
- {
+ if (*separator != ',') {
LOG_ERROR("incomplete write memory packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
len = strtoul(separator + 1, &separator, 16);
- if (*(separator++) != ':')
- {
+ if (*(separator++) != ':') {
LOG_ERROR("incomplete write memory packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
LOG_DEBUG("addr: 0x%8.8" PRIx32 ", 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((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;
}
-int gdb_write_memory_binary_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_write_memory_binary_packet(struct connection *connection,
+ char *packet, int packet_size)
{
+ struct target *target = get_target_from_connection(connection);
char *separator;
uint32_t addr = 0;
uint32_t len = 0;
- int retval;
+ int retval = ERROR_OK;
/* skip command character */
packet++;
addr = strtoul(packet, &separator, 16);
- if (*separator != ',')
- {
+ 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++) != ':')
- {
+ if (*(separator++) != ':') {
LOG_ERROR("incomplete write memory binary packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
- retval = ERROR_OK;
- if (len)
- {
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
+ struct gdb_connection *gdb_connection = connection->priv;
- retval = target_write_buffer(target, addr, len, (uint8_t*)separator);
+ 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 = gdb_error(connection, retval)) != ERROR_OK)
+ 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;
}
-int gdb_step_continue_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_step_continue_packet(struct connection *connection,
+ char *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)
- {
+ if (packet_size > 1) {
packet[packet_size] = 0;
address = strtoul(packet + 1, NULL, 16);
- }
- else
- {
+ } else
current = 1;
- }
- if (packet[0] == 'c')
- {
+ gdb_running_type = packet[0];
+ if (packet[0] == 'c') {
LOG_DEBUG("continue");
- target_handle_event(target, TARGET_EVENT_OLD_pre_resume);
- retval = target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
- }
- else if (packet[0] == 's')
- {
+ /* 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;
}
-int gdb_breakpoint_watchpoint_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_breakpoint_watchpoint_packet(struct connection *connection,
+ char *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;
+ enum watchpoint_rw wp_type = WPT_READ /* dummy init to avoid warning */;
uint32_t address;
uint32_t size;
char *separator;
if (type == 0) /* memory breakpoint */
bp_type = BKPT_SOFT;
- else if (type == 1) /* hardware breakpoint */
+ else if (type == 1) /* hardware breakpoint */
bp_type = BKPT_HARD;
- else if (type == 2) /* write watchpoint */
+ else if (type == 2) /* write watchpoint */
wp_type = WPT_WRITE;
- else if (type == 3) /* read watchpoint */
+ else if (type == 3) /* read watchpoint */
wp_type = WPT_READ;
- else if (type == 4) /* access watchpoint */
+ 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)))
- {
+ if (gdb_breakpoint_override && ((bp_type == BKPT_SOFT) || (bp_type == BKPT_HARD)))
bp_type = gdb_breakpoint_override_type;
- }
- if (*separator != ',')
- {
+ if (*separator != ',') {
LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
address = strtoul(separator + 1, &separator, 16);
- if (*separator != ',')
- {
+ if (*separator != ',') {
LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
size = strtoul(separator + 1, &separator, 16);
- switch (type)
- {
+ switch (type) {
case 0:
case 1:
- if (packet[0] == 'Z')
- {
- if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
- {
- if ((retval = gdb_error(connection, retval)) != ERROR_OK)
+ 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
- {
+ } else
gdb_put_packet(connection, "OK", 2);
- }
- }
- else
- {
+ } else {
breakpoint_remove(target, address);
gdb_put_packet(connection, "OK", 2);
}
case 3:
case 4:
{
- if (packet[0] == 'Z')
- {
- if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
- {
- if ((retval = gdb_error(connection, retval)) != ERROR_OK)
+ 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
- {
+ } else
gdb_put_packet(connection, "OK", 2);
- }
- }
- else
- {
+ } else {
watchpoint_remove(target, address);
gdb_put_packet(connection, "OK", 2);
}
return ERROR_OK;
}
-/* print out a string and allocate more space as needed, mainly used for XML at this point */
-void xml_printf(int *retval, char **xml, int *pos, int *size, const char *fmt, ...)
+/* 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))
- {
+ 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 (*xml == NULL) {
if (t)
free(t);
*retval = ERROR_SERVER_REMOTE_CLOSED;
va_start(ap, fmt);
ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
va_end(ap);
- if ((ret > 0) && ((ret + 1) < *size - *pos))
- {
+ if ((ret > 0) && ((ret + 1) < *size - *pos)) {
*pos += ret;
return;
}
return 0;
}
-int gdb_calc_blocksize(struct flash_bank *bank)
-{
- uint32_t i;
- uint32_t block_size = 0xffffffff;
-
- /* loop through all sectors and return smallest sector size */
-
- for (i = 0; i < (uint32_t)bank->num_sectors; i++)
- {
- if (bank->sectors[i].size < block_size)
- block_size = bank->sectors[i].size;
- }
-
- return block_size;
-}
-
-static int compare_bank (const void * a, const void * b)
+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);
+ b1 = *((struct flash_bank **)a);
+ b2 = *((struct flash_bank **)b);
if (b1->base == b2->base)
- {
return 0;
- } else if (b1->base > b2->base)
- {
+ else if (b1->base > b2->base)
return 1;
- } else
- {
+ else
return -1;
- }
}
-int gdb_query_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_memory_map(struct connection *connection,
+ char *packet, int packet_size)
{
- struct command_context *cmd_ctx = connection->cmd_ctx;
- struct gdb_connection *gdb_connection = connection->priv;
+ /* 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.
+ */
- if (strstr(packet, "qRcmd,"))
- {
- 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;
+ 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;
- /* 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);
+ /* 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++) {
+ retval = get_flash_bank_by_num(i, &p);
+ if (retval != ERROR_OK) {
+ free(banks);
+ gdb_error(connection, retval);
+ return retval;
}
- gdb_put_packet(connection, "OK", 2);
- return ERROR_OK;
+ if (p->target == target)
+ banks[target_flash_banks++] = p;
}
- else if (strstr(packet, "qCRC:"))
- {
- 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);
+ qsort(banks, target_flash_banks, sizeof(struct flash_bank *),
+ compare_bank);
- if (*separator != ',')
- {
- LOG_ERROR("incomplete read memory packet received, dropping connection");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
+ for (i = 0; i < target_flash_banks; i++) {
+ int j;
+ unsigned sector_size = 0;
+ uint32_t start;
- len = strtoul(separator + 1, NULL, 16);
+ p = banks[i];
+ start = p->base;
- retval = target_checksum_memory(target, addr, len, &checksum);
+ 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);
- if (retval == ERROR_OK)
- {
- snprintf(gdb_reply, 10, "C%8.8" PRIx32 "", checksum);
- gdb_put_packet(connection, gdb_reply, 9);
- }
- else
- {
- if ((retval = gdb_error(connection, retval)) != ERROR_OK)
- return retval;
+ /* 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;
}
- return ERROR_OK;
+ /* 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;
}
- else if (strstr(packet, "qSupported"))
- {
- /* we currently support packet size and qXfer:memory-map:read (if enabled)
- * disable qXfer:features:read for the moment */
- int retval = ERROR_OK;
- char *buffer = NULL;
- int pos = 0;
- int size = 0;
- xml_printf(&retval, &buffer, &pos, &size,
- "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
- (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-');
+ 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
+ */
- if (retval != ERROR_OK)
- {
- gdb_send_error(connection, 01);
- return ERROR_OK;
- }
+ free(banks);
+ banks = NULL;
- gdb_put_packet(connection, buffer, strlen(buffer));
- free(buffer);
+ xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
- return ERROR_OK;
+ if (retval != ERROR_OK) {
+ gdb_error(connection, retval);
+ return retval;
}
- else if (strstr(packet, "qXfer:memory-map:read::") && (flash_get_bank_count() > 0))
- {
- /* 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 flash_bank *p;
- char *xml = NULL;
- int size = 0;
- int pos = 0;
- int retval = ERROR_OK;
+ if (offset + length > pos)
+ length = pos - offset;
- int offset;
- int length;
- char *separator;
- int blocksize;
+ char *t = malloc(length + 1);
+ t[0] = 'l';
+ memcpy(t + 1, xml + offset, length);
+ gdb_put_packet(connection, t, length + 1);
- /* skip command character */
- packet += 23;
+ free(t);
+ free(xml);
+ return ERROR_OK;
+}
- offset = strtoul(packet, &separator, 16);
- length = strtoul(separator + 1, &separator, 16);
+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 */
+}
- xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
+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;
- /*
- sort banks in ascending order, we need to make non-flash memory be ram(or rather
- read/write) by default for GDB.
- GDB does not have a concept of non-cacheable read/write memory.
- */
- struct flash_bank **banks = malloc(sizeof(struct flash_bank *)*flash_get_bank_count());
- int i;
+ 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;
+ }
- for (i = 0; i < flash_get_bank_count(); i++)
- {
- p = get_flash_bank_by_num(i);
- if (p == NULL)
- {
- free(banks);
- retval = ERROR_FAIL;
- gdb_send_error(connection, retval);
- return retval;
+ 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;
}
- banks[i]=p;
}
- qsort(banks, flash_get_bank_count(), sizeof(struct flash_bank *), compare_bank);
+ 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;
+ }
- uint32_t ram_start = 0;
- for (i = 0; i < flash_get_bank_count(); i++)
- {
- p = banks[i];
+ xml_printf(&retval, tdesc, pos, size,
+ "</flags>\n");
- 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);
- }
+ }
- /* if device has uneven sector sizes, eg. str7, lpc
- * we pass the smallest sector size to gdb memory map */
- blocksize = gdb_calc_blocksize(p);
+ return ERROR_OK;
+}
- xml_printf(&retval, &xml, &pos, &size, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
- "<property name=\"blocksize\">0x%x</property>\n" \
- "</memory>\n", \
- p->base, p->size, blocksize);
- 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 */
- }
+/* Get a list of available target registers features. feature_list must
+ * be freed by caller.
+ */
+int get_reg_features_list(struct target *target, char **feature_list[], int *feature_list_size,
+ struct reg **reg_list, int reg_list_size)
+{
+ int tbl_sz = 0;
- free(banks);
- banks = NULL;
+ /* Start with only one element */
+ *feature_list = calloc(1, sizeof(char *));
- xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
+ for (int i = 0; i < reg_list_size; i++) {
+ if (reg_list[i]->exist == false)
+ continue;
- if (retval != ERROR_OK)
- {
- gdb_send_error(connection, retval);
- return retval;
+ if ((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++] = strdup(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 (offset + length > pos)
- {
- length = pos - offset;
- }
+ if (feature_list_size)
+ *feature_list_size = tbl_sz;
- char *t = malloc(length + 1);
- t[0] = 'l';
- memcpy(t + 1, xml + offset, length);
- gdb_put_packet(connection, t, length + 1);
+ return ERROR_OK;
+}
- free(t);
- free(xml);
- return ERROR_OK;
- }
- else if (strstr(packet, "qXfer:features:read:"))
- {
- char *xml = NULL;
- int size = 0;
- int pos = 0;
- int retval = ERROR_OK;
+static int gdb_generate_target_description(struct target *target, char **tdesc)
+{
+ int retval = ERROR_OK;
+ struct reg **reg_list;
+ int reg_list_size;
+ int pos = 0;
+ int size = 0;
+
+ xml_printf(&retval, tdesc, &pos, &size,
+ "<?xml version=\"1.0\"?>\n"
+ "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n"
+ "<target version=\"1.0\">\n");
+
+ retval = target_get_gdb_reg_list(target, ®_list,
+ ®_list_size, REG_CLASS_ALL);
+
+ if (retval != ERROR_OK) {
+ LOG_ERROR("get register list failed");
+ return ERROR_FAIL;
+ }
+
+ if (reg_list_size <= 0)
+ return ERROR_FAIL;
+
+ char **features = NULL;
+ /* Get a list of available target registers features */
+ retval = get_reg_features_list(target, &features, NULL, reg_list, reg_list_size);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Can't get the registers feature list");
+ return ERROR_FAIL;
+ }
+
+ /* If we found some features associated with registers, create sections */
+ int current_feature = 0;
+
+ /* 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");
+
+ if (reg_list != NULL)
+ free(reg_list);
+
+ if (features != NULL)
+ free(features);
+
+ return ERROR_OK;
+}
+
+static int gdb_get_target_description_chunk(struct target *target, char **chunk,
+ int32_t offset, uint32_t length)
+{
+ static char *tdesc;
+ static uint32_t tdesc_length;
+
+ if (tdesc == NULL) {
+ gdb_generate_target_description(target, &tdesc);
+ tdesc_length = strlen(tdesc);
+ }
+
+ char transfer_type;
+
+ if (length < (tdesc_length - offset))
+ transfer_type = 'm';
+ else
+ transfer_type = 'l';
+
+ *chunk = malloc(length + 2);
+ (*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;
+ }
+
+ 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;
+ 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) {
+ retval = ERROR_FAIL;
+ goto error;
+ }
+
+ char **features = NULL;
+ /* 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:
+ if (reg_list != NULL)
+ free(reg_list);
+
+ if (features != NULL)
+ free(features);
+
+ return retval;
+}
+
+static int gdb_query_packet(struct connection *connection,
+ char *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, &annex, &offset, &length) < 0)
- {
+ if (decode_xfer_read(packet, &annex, &offset, &length) < 0) {
gdb_send_error(connection, 01);
return ERROR_OK;
}
- if (strcmp(annex, "target.xml") != 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");
-
- if (retval != ERROR_OK)
- {
- gdb_send_error(connection, retval);
+ /* 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, &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;
}
-int gdb_v_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+static int gdb_v_packet(struct connection *connection,
+ char *packet, int packet_size)
{
struct gdb_connection *gdb_connection = connection->priv;
struct gdb_service *gdb_service = connection->service->priv;
/* if flash programming disabled - send a empty reply */
- if (gdb_flash_program == 0)
- {
+ if (gdb_flash_program == 0) {
gdb_put_packet(connection, "", 0);
return ERROR_OK;
}
- if (strstr(packet, "vFlashErase:"))
- {
+ if (strncmp(packet, "vFlashErase:", 12) == 0) {
unsigned long addr;
unsigned long length;
char *parse = packet + 12;
- if (*parse == '\0')
- {
+ if (*parse == '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
addr = strtoul(parse, &parse, 16);
- if (*(parse++) != ',' || *parse == '\0')
- {
+ if (*(parse++) != ',' || *parse == '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
length = strtoul(parse, &parse, 16);
- if (*parse != '\0')
- {
+ if (*parse != '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
flash_set_dirty();
/* perform any target specific operations before the erase */
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_START);
- result = flash_erase_address_range(gdb_service->target, addr, length);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_END);
+ 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)
- {
+ 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
+ } else
gdb_put_packet(connection, "OK", 2);
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;
- if (*parse == '\0')
- {
+ if (*parse == '\0') {
LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
addr = strtoul(parse, &parse, 16);
- if (*(parse++) != ':')
- {
+ 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)
- {
+ 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 */
- if ((retval = image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (uint8_t*)parse)) != ERROR_OK)
- {
+ retval = image_add_section(gdb_connection->vflash_image,
+ addr, length, 0x0, (uint8_t *)parse);
+ if (retval != ERROR_OK)
return retval;
- }
gdb_put_packet(connection, "OK", 2);
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_EVENT_GDB_FLASH_WRITE_START);
+ 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_OK) {
if (result == ERROR_FLASH_DST_OUT_OF_BANK)
gdb_put_packet(connection, "E.memtype", 9);
else
gdb_send_error(connection, EIO);
- }
- else
- {
+ } else {
LOG_DEBUG("wrote %u bytes from vFlash image to flash", (unsigned)written);
gdb_put_packet(connection, "OK", 2);
}
return ERROR_OK;
}
-int gdb_detach(struct connection *connection, struct target *target)
+static int gdb_detach(struct connection *connection)
{
struct gdb_service *gdb_service = connection->service->priv;
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 *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)
- {
+ if (gdb_con->busy) {
/* do not reply this using the O packet */
return;
}
gdb_output_con(connection, string);
}
-/* Do not allocate this on the stack */
-char gdb_packet_buffer[GDB_BUFFER_SIZE];
-
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);
-
}
-int gdb_input_inner(struct connection *connection)
+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 *packet = gdb_packet_buffer;
int packet_size;
int retval;
struct gdb_connection *gdb_con = connection->priv;
- static int extended_protocol = 0;
+ static int extended_protocol;
- /* drain input buffer */
- do
- {
+ /* 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;
- if ((retval = gdb_get_packet(connection, packet, &packet_size)) != ERROR_OK)
- {
+ retval = gdb_get_packet(connection, packet, &packet_size);
+ if (retval != ERROR_OK)
return retval;
- }
/* terminate with zero */
packet[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 ];
+ /* binary packets spew junk into the debug log stream */
+ char buf[50];
int x;
- for (x = 0 ; (x < 49) && (packet[x] != ':') ; 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 {
+ } else
LOG_DEBUG("received packet: '%s'", packet);
- }
}
- if (packet_size > 0)
- {
+ if (packet_size > 0) {
retval = ERROR_OK;
- switch (packet[0])
- {
- case 'H':
- /* Hct... -- set thread
- * we don't have threads, send empty reply */
- gdb_put_packet(connection, NULL, 0);
+ 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_query_packet(connection, target, packet, packet_size);
+ 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, target, packet, packet_size);
+ retval = gdb_get_registers_packet(connection, packet, packet_size);
break;
case 'G':
- retval = gdb_set_registers_packet(connection, target, packet, packet_size);
+ retval = gdb_set_registers_packet(connection, packet, packet_size);
break;
case 'p':
- retval = gdb_get_register_packet(connection, target, packet, packet_size);
+ retval = gdb_get_register_packet(connection, packet, packet_size);
break;
case 'P':
- retval = gdb_set_register_packet(connection, target, packet, packet_size);
+ retval = gdb_set_register_packet(connection, packet, packet_size);
break;
case 'm':
- retval = gdb_read_memory_packet(connection, target, packet, packet_size);
+ retval = gdb_read_memory_packet(connection, packet, packet_size);
break;
case 'M':
- retval = gdb_write_memory_packet(connection, target, packet, packet_size);
+ retval = gdb_write_memory_packet(connection, packet, packet_size);
break;
case 'z':
case 'Z':
- retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
+ retval = gdb_breakpoint_watchpoint_packet(connection, packet, packet_size);
break;
case '?':
- gdb_last_signal_packet(connection, target, packet, packet_size);
+ gdb_last_signal_packet(connection, packet, packet_size);
break;
case 'c':
case 's':
- {
- int retval = ERROR_OK;
-
- struct gdb_connection *gdb_con = connection->priv;
- log_add_callback(gdb_log_callback, connection);
-
- bool nostep = false;
- if (target->state == TARGET_RUNNING)
- {
- LOG_WARNING("The target is already running. Halt target before stepi/continue.");
- retval = target_halt(target);
- if (retval == ERROR_OK)
- retval = target_wait_state(target, TARGET_HALTED, 100);
- } 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 ((retval!=ERROR_OK) || 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);
- int retval = gdb_step_continue_packet(connection, target, packet, packet_size);
- if (retval != ERROR_OK)
- {
- /* we'll never receive a halted condition... issue a false one.. */
+ {
+ 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;
+ }
+ break;
case 'v':
- retval = gdb_v_packet(connection, target, packet, packet_size);
+ retval = gdb_v_packet(connection, packet, packet_size);
break;
case 'D':
- retval = gdb_detach(connection, target);
+ retval = gdb_detach(connection);
extended_protocol = 0;
break;
case 'X':
- if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
+ retval = gdb_write_memory_binary_packet(connection, packet, packet_size);
+ if (retval != ERROR_OK)
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 '!':
/* 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->cmd_name);
+ 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 unkown packets */
+ /* ignore unknown packets */
LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
gdb_put_packet(connection, NULL, 0);
break;
return retval;
}
- if (gdb_con->ctrl_c)
- {
- if (target->state == TARGET_RUNNING)
- {
+ 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
- {
+ } else {
LOG_INFO("The target is not running when halt was requested, stopping GDB.");
target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
}
return ERROR_OK;
}
-int gdb_input(struct connection *connection)
+static int gdb_input(struct connection *connection)
{
int retval = gdb_input_inner(connection);
struct gdb_connection *gdb_con = connection->priv;
return ERROR_OK;
}
-int gdb_init(void)
+static int gdb_target_start(struct target *target, const char *port)
{
struct gdb_service *gdb_service;
- struct target *target = all_targets;
+ 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;
+}
- if (!target)
- {
- LOG_WARNING("no gdb ports allocated as no target has been specified");
+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((void *)gdb_port_next);
+ gdb_port_next = alloc_printf("%d", portnumber+1);
+ }
+ }
}
+ return retval;
+}
- if (gdb_port == 0 && server_use_pipes == 0)
- {
- LOG_INFO("gdb port disabled");
+int gdb_target_add_all(struct target *target)
+{
+ if (NULL == target) {
+ LOG_WARNING("gdb services need one or more targets defined");
return ERROR_OK;
}
- if (server_use_pipes)
- {
- /* only a single gdb connection when using a pipe */
-
- gdb_service = malloc(sizeof(struct gdb_service));
- gdb_service->target = target;
-
- add_service("gdb", CONNECTION_PIPE, 0, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service);
-
- LOG_DEBUG("gdb service for target %s using pipes",
- target_get_name(target));
- }
- else
- {
- unsigned short port = gdb_port;
+ while (NULL != target) {
+ int retval = gdb_target_add_one(target);
+ if (ERROR_OK != retval)
+ return retval;
- while (target)
- {
- gdb_service = malloc(sizeof(struct gdb_service));
- gdb_service->target = target;
-
- add_service("gdb", CONNECTION_TCP,
- port, 1,
- gdb_new_connection, gdb_input,
- gdb_connection_closed, gdb_service);
-
- LOG_DEBUG("gdb service for target %s at TCP port %i",
- target_get_name(target),
- port);
- target = target->next;
- port++;
- }
+ 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)
- {
+ if (current_gdb_connection == NULL) {
command_print(CMD_CTX,
- "gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
+ "gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
return ERROR_FAIL;
}
/* daemon configuration command gdb_port */
COMMAND_HANDLER(handle_gdb_port_command)
{
- return CALL_COMMAND_HANDLER(server_port_command, &gdb_port);
+ int retval = CALL_COMMAND_HANDLER(server_pipe_command, &gdb_port);
+ if (ERROR_OK == retval) {
+ free((void *)gdb_port_next);
+ gdb_port_next = strdup(gdb_port);
+ }
+ return retval;
}
COMMAND_HANDLER(handle_gdb_memory_map_command)
{
- if (CMD_ARGC == 1)
- {
- if (strcmp(CMD_ARGV[0], "enable") == 0)
- {
- gdb_use_memory_map = 1;
- return ERROR_OK;
- }
- else if (strcmp(CMD_ARGV[0], "disable") == 0)
- {
- gdb_use_memory_map = 0;
- return ERROR_OK;
- }
- else
- LOG_WARNING("invalid gdb_memory_map configuration directive %s", CMD_ARGV[0]);
- }
+ if (CMD_ARGC != 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- 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)
- {
- if (strcmp(CMD_ARGV[0], "enable") == 0)
- {
- gdb_flash_program = 1;
- return ERROR_OK;
- }
- else if (strcmp(CMD_ARGV[0], "disable") == 0)
- {
- gdb_flash_program = 0;
- return ERROR_OK;
- }
- else
- LOG_WARNING("invalid gdb_flash_program configuration directive: %s", CMD_ARGV[0]);
- }
+ if (CMD_ARGC != 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- 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)
- {
- if (strcmp(CMD_ARGV[0], "enable") == 0)
- {
- gdb_report_data_abort = 1;
- return ERROR_OK;
- }
- else if (strcmp(CMD_ARGV[0], "disable") == 0)
- {
- gdb_report_data_abort = 0;
- return ERROR_OK;
- }
- else
- LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", CMD_ARGV[0]);
- }
+ if (CMD_ARGC != 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- 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)
- {
-
- } else if (CMD_ARGC == 1)
- {
+ 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)
- {
+ else if (strcmp(CMD_ARGV[0], "soft") == 0)
gdb_breakpoint_override_type = BKPT_SOFT;
- } else if (strcmp(CMD_ARGV[0], "disable") == 0)
- {
+ 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 overriden");
- }
+ 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;
}
-int gdb_register_commands(struct command_context *command_context)
-{
- register_command(command_context, NULL, "gdb_sync",
- handle_gdb_sync_command, COMMAND_ANY,
- "next stepi will return immediately allowing GDB to "
- "fetch register state without affecting target state");
- register_command(command_context, NULL, "gdb_port",
- handle_gdb_port_command, COMMAND_ANY,
- "daemon configuration command gdb_port");
- register_command(command_context, NULL, "gdb_memory_map",
- handle_gdb_memory_map_command, COMMAND_CONFIG,
- "enable or disable memory map");
- register_command(command_context, NULL, "gdb_flash_program",
- handle_gdb_flash_program_command, COMMAND_CONFIG,
- "enable or disable flash program");
- register_command(command_context, NULL, "gdb_report_data_abort",
- handle_gdb_report_data_abort_command, COMMAND_CONFIG,
- "enable or disable reporting data aborts");
- register_command(command_context, NULL, "gdb_breakpoint_override",
- handle_gdb_breakpoint_override_command, COMMAND_EXEC,
- "hard/soft/disable - force type of breakpoint "
- "used by gdb 'break' commands.");
+COMMAND_HANDLER(handle_gdb_save_tdesc_command)
+{
+ static char *tdesc;
+ static uint32_t tdesc_length;
+ struct target *target = get_current_target(CMD_CTX);
+ char *tdesc_filename;
+
+ if (tdesc == NULL) {
+ gdb_generate_target_description(target, &tdesc);
+ tdesc_length = strlen(tdesc);
+ }
+
+ struct fileio fileio;
+ size_t size_written;
+
+ tdesc_filename = malloc(strlen(target_type_name(target)) + 5);
+ sprintf(tdesc_filename, "%s.xml", target_type_name(target));
+
+ int retval = fileio_open(&fileio, tdesc_filename, FILEIO_WRITE, FILEIO_TEXT);
+
+ if (retval != ERROR_OK) {
+ LOG_WARNING("Can't open %s for writing", tdesc_filename);
+ free(tdesc_filename);
+ return ERROR_FAIL;
+ }
+
+ retval = fileio_write(&fileio, tdesc_length, tdesc, &size_written);
+
+ fileio_close(&fileio);
+ free(tdesc_filename);
+
+ if (retval != ERROR_OK) {
+ LOG_WARNING("Error while writing the tdesc file");
+ return ERROR_FAIL;
+ }
+
return ERROR_OK;
}
+
+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);
+}
projects / openocd / blobdiff