X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fserver%2Fgdb_server.c;h=42ac8a5e2e7a2bfea4798a4109049651fb8796ad;hp=4b9b634d1613d3f7bca5b5ceb9a9eae7a1db87ae;hb=293fb9b25faf8c89a9d06d73b83526b86d4c14d8;hpb=73b676c2fdedcb913f1c20be7de99ea0a94b11cc
diff --git a/src/server/gdb_server.c b/src/server/gdb_server.c
index 4b9b634d16..42ac8a5e2e 100644
--- a/src/server/gdb_server.c
+++ b/src/server/gdb_server.c
@@ -31,9 +31,7 @@
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
+ * along with this program. If not, see . *
***************************************************************************/
#ifdef HAVE_CONFIG_H
@@ -43,6 +41,8 @@
#include
#include
#include
+#include
+#include
#include "server.h"
#include
#include "gdb_server.h"
@@ -73,8 +73,8 @@ struct gdb_connection {
int ctrl_c;
enum target_state frontend_state;
struct image *vflash_image;
- int closed;
- int busy;
+ bool closed;
+ bool busy;
int noack_mode;
/* set flag to true if you want the next stepi to return immediately.
* allowing GDB to pick up a fresh set of register values from the target
@@ -92,6 +92,8 @@ struct gdb_connection {
bool attached;
/* temporarily used for target description support */
struct target_desc_format target_desc;
+ /* temporarily used for thread list support */
+ char *thread_list;
};
#if 0
@@ -110,6 +112,8 @@ static char *gdb_port_next;
static void gdb_log_callback(void *priv, const char *file, unsigned line,
const char *function, const char *string);
+static void gdb_sig_halted(struct connection *connection);
+
/* number of gdb connections, mainly to suppress gdb related debugging spam
* in helper/log.c when no gdb connections are actually active */
int gdb_actual_connections;
@@ -215,7 +219,7 @@ static int gdb_get_char_inner(struct connection *connection, int *next_char)
if (gdb_con->buf_cnt > 0)
break;
if (gdb_con->buf_cnt == 0) {
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
@@ -227,10 +231,10 @@ static int gdb_get_char_inner(struct connection *connection, int *next_char)
usleep(1000);
break;
case WSAECONNABORTED:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
case WSAECONNRESET:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
default:
LOG_ERROR("read: %d", errno);
@@ -242,14 +246,14 @@ static int gdb_get_char_inner(struct connection *connection, int *next_char)
usleep(1000);
break;
case ECONNABORTED:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
case ECONNRESET:
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
default:
LOG_ERROR("read: %s", strerror(errno));
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
#endif
@@ -341,7 +345,7 @@ static int gdb_write(struct connection *connection, void *data, int len)
if (connection_write(connection, data, len) == len)
return ERROR_OK;
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
@@ -448,7 +452,7 @@ static int gdb_put_packet_inner(struct connection *connection,
return ERROR_OK;
} else {
LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply);
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
} else if (reply == '$') {
@@ -458,7 +462,7 @@ static int gdb_put_packet_inner(struct connection *connection,
} else {
LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection",
reply);
- gdb_con->closed = 1;
+ gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
}
@@ -471,9 +475,9 @@ static int gdb_put_packet_inner(struct connection *connection,
int gdb_put_packet(struct connection *connection, char *buffer, int len)
{
struct gdb_connection *gdb_con = connection->priv;
- gdb_con->busy = 1;
+ gdb_con->busy = true;
int retval = gdb_put_packet_inner(connection, buffer, len);
- gdb_con->busy = 0;
+ gdb_con->busy = false;
/* we sent some data, reset timer for keep alive messages */
kept_alive();
@@ -679,9 +683,9 @@ static int gdb_get_packet_inner(struct connection *connection,
static int gdb_get_packet(struct connection *connection, char *buffer, int *len)
{
struct gdb_connection *gdb_con = connection->priv;
- gdb_con->busy = 1;
+ gdb_con->busy = true;
int retval = gdb_get_packet_inner(connection, buffer, len);
- gdb_con->busy = 0;
+ gdb_con->busy = false;
return retval;
}
@@ -697,7 +701,8 @@ static int gdb_output_con(struct connection *connection, const char *line)
return ERROR_GDB_BUFFER_TOO_SMALL;
hex_buffer[0] = 'O';
- int pkt_len = hexify(hex_buffer + 1, line, bin_size, bin_size * 2 + 1);
+ size_t pkt_len = hexify(hex_buffer + 1, (const uint8_t *)line, bin_size,
+ bin_size * 2 + 1);
int retval = gdb_put_packet(connection, hex_buffer, pkt_len + 1);
free(hex_buffer);
@@ -734,22 +739,22 @@ static void gdb_signal_reply(struct target *target, struct connection *connectio
stop_reason[0] = '\0';
if (target->debug_reason == DBG_REASON_WATCHPOINT) {
enum watchpoint_rw hit_wp_type;
- uint32_t hit_wp_address;
+ target_addr_t hit_wp_address;
if (watchpoint_hit(target, &hit_wp_type, &hit_wp_address) == ERROR_OK) {
switch (hit_wp_type) {
case WPT_WRITE:
snprintf(stop_reason, sizeof(stop_reason),
- "watch:%08" PRIx32 ";", hit_wp_address);
+ "watch:%08" TARGET_PRIxADDR ";", hit_wp_address);
break;
case WPT_READ:
snprintf(stop_reason, sizeof(stop_reason),
- "rwatch:%08" PRIx32 ";", hit_wp_address);
+ "rwatch:%08" TARGET_PRIxADDR ";", hit_wp_address);
break;
case WPT_ACCESS:
snprintf(stop_reason, sizeof(stop_reason),
- "awatch:%08" PRIx32 ";", hit_wp_address);
+ "awatch:%08" TARGET_PRIxADDR ";", hit_wp_address);
break;
default:
break;
@@ -759,8 +764,12 @@ static void gdb_signal_reply(struct target *target, struct connection *connectio
current_thread[0] = '\0';
if (target->rtos != NULL) {
- snprintf(current_thread, sizeof(current_thread), "thread:%016" PRIx64 ";", target->rtos->current_thread);
+ struct target *ct;
+ snprintf(current_thread, sizeof(current_thread), "thread:%016" PRIx64 ";",
+ target->rtos->current_thread);
target->rtos->current_threadid = target->rtos->current_thread;
+ target->rtos->gdb_target_for_threadid(connection, target->rtos->current_threadid, &ct);
+ signal_var = gdb_last_signal(ct);
}
sig_reply_len = snprintf(sig_reply, sizeof(sig_reply), "T%2.2x%s%s",
@@ -916,10 +925,11 @@ static int gdb_target_callback_event_handler(struct target *target,
static int gdb_new_connection(struct connection *connection)
{
struct gdb_connection *gdb_connection = malloc(sizeof(struct gdb_connection));
- struct gdb_service *gdb_service = connection->service->priv;
+ struct target *target;
int retval;
int initial_ack;
+ target = get_target_from_connection(connection);
connection->priv = gdb_connection;
/* initialize gdb connection information */
@@ -928,14 +938,15 @@ static int gdb_new_connection(struct connection *connection)
gdb_connection->ctrl_c = 0;
gdb_connection->frontend_state = TARGET_HALTED;
gdb_connection->vflash_image = NULL;
- gdb_connection->closed = 0;
- gdb_connection->busy = 0;
+ gdb_connection->closed = false;
+ gdb_connection->busy = false;
gdb_connection->noack_mode = 0;
gdb_connection->sync = false;
gdb_connection->mem_write_error = false;
gdb_connection->attached = true;
gdb_connection->target_desc.tdesc = NULL;
gdb_connection->target_desc.tdesc_length = 0;
+ gdb_connection->thread_list = NULL;
/* send ACK to GDB for debug request */
gdb_write(connection, "+", 1);
@@ -947,12 +958,12 @@ static int gdb_new_connection(struct connection *connection)
* GDB session could leave dangling breakpoints if e.g. communication
* timed out.
*/
- breakpoint_clear_target(gdb_service->target);
- watchpoint_clear_target(gdb_service->target);
+ breakpoint_clear_target(target);
+ watchpoint_clear_target(target);
/* 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);
+ if ((target->rtos) && (target->rtos->type->clean))
+ target->rtos->type->clean(target);
/* remove the initial ACK from the incoming buffer */
retval = gdb_get_char(connection, &initial_ack);
@@ -964,7 +975,7 @@ static int gdb_new_connection(struct connection *connection)
*/
if (initial_ack != '+')
gdb_putback_char(connection, initial_ack);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_ATTACH);
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_ATTACH);
if (gdb_use_memory_map) {
/* Connect must fail if the memory map can't be set up correctly.
@@ -976,7 +987,7 @@ static int gdb_new_connection(struct connection *connection)
for (i = 0; i < flash_get_bank_count(); i++) {
struct flash_bank *p;
p = get_flash_bank_by_num_noprobe(i);
- if (p->target != gdb_service->target)
+ if (p->target != target)
continue;
retval = get_flash_bank_by_num(i, &p);
if (retval != ERROR_OK) {
@@ -988,10 +999,12 @@ static int gdb_new_connection(struct connection *connection)
}
gdb_actual_connections++;
- LOG_DEBUG("New GDB Connection: %d, Target %s, state: %s",
+ log_printf_lf(all_targets->next != NULL ? LOG_LVL_INFO : LOG_LVL_DEBUG,
+ __FILE__, __LINE__, __func__,
+ "New GDB Connection: %d, Target %s, state: %s",
gdb_actual_connections,
- target_name(gdb_service->target),
- target_state_name(gdb_service->target));
+ target_name(target),
+ target_state_name(target));
/* DANGER! If we fail subsequently, we must remove this handler,
* otherwise we occasionally see crashes as the timer can invoke the
@@ -1005,9 +1018,11 @@ static int gdb_new_connection(struct connection *connection)
static int gdb_connection_closed(struct connection *connection)
{
- struct gdb_service *gdb_service = connection->service->priv;
+ struct target *target;
struct gdb_connection *gdb_connection = connection->priv;
+ target = get_target_from_connection(connection);
+
/* we're done forwarding messages. Tear down callback before
* cleaning up connection.
*/
@@ -1015,8 +1030,8 @@ static int gdb_connection_closed(struct connection *connection)
gdb_actual_connections--;
LOG_DEBUG("GDB Close, Target: %s, state: %s, gdb_actual_connections=%d",
- target_name(gdb_service->target),
- target_state_name(gdb_service->target),
+ target_name(target),
+ target_state_name(target),
gdb_actual_connections);
/* see if an image built with vFlash commands is left */
@@ -1027,7 +1042,7 @@ static int gdb_connection_closed(struct connection *connection)
}
/* if this connection registered a debug-message receiver delete it */
- delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
+ delete_debug_msg_receiver(connection->cmd_ctx, target);
if (connection->priv) {
free(connection->priv);
@@ -1037,9 +1052,9 @@ static int gdb_connection_closed(struct connection *connection)
target_unregister_event_callback(gdb_target_callback_event_handler, connection);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_END);
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_END);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH);
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_DETACH);
return ERROR_OK;
}
@@ -1353,7 +1368,7 @@ static int gdb_read_memory_packet(struct connection *connection,
{
struct target *target = get_target_from_connection(connection);
char *separator;
- uint32_t addr = 0;
+ uint64_t addr = 0;
uint32_t len = 0;
uint8_t *buffer;
@@ -1364,7 +1379,7 @@ static int gdb_read_memory_packet(struct connection *connection,
/* skip command character */
packet++;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete read memory packet received, dropping connection");
@@ -1381,7 +1396,7 @@ static int gdb_read_memory_packet(struct connection *connection,
buffer = malloc(len);
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
+ LOG_DEBUG("addr: 0x%16.16" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
retval = target_read_buffer(target, addr, len, buffer);
@@ -1406,7 +1421,7 @@ static int gdb_read_memory_packet(struct connection *connection,
if (retval == ERROR_OK) {
hex_buffer = malloc(len * 2 + 1);
- int pkt_len = hexify(hex_buffer, (char *)buffer, len, len * 2 + 1);
+ size_t pkt_len = hexify(hex_buffer, buffer, len, len * 2 + 1);
gdb_put_packet(connection, hex_buffer, pkt_len);
@@ -1424,7 +1439,7 @@ static int gdb_write_memory_packet(struct connection *connection,
{
struct target *target = get_target_from_connection(connection);
char *separator;
- uint32_t addr = 0;
+ uint64_t addr = 0;
uint32_t len = 0;
uint8_t *buffer;
@@ -1433,7 +1448,7 @@ static int gdb_write_memory_packet(struct connection *connection,
/* skip command character */
packet++;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete write memory packet received, dropping connection");
@@ -1449,9 +1464,9 @@ static int gdb_write_memory_packet(struct connection *connection,
buffer = malloc(len);
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
+ LOG_DEBUG("addr: 0x%" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
- if (unhexify((char *)buffer, separator, len) != (int)len)
+ if (unhexify(buffer, separator, len) != len)
LOG_ERROR("unable to decode memory packet");
retval = target_write_buffer(target, addr, len, buffer);
@@ -1471,15 +1486,19 @@ static int gdb_write_memory_binary_packet(struct connection *connection,
{
struct target *target = get_target_from_connection(connection);
char *separator;
- uint32_t addr = 0;
+ uint64_t addr = 0;
uint32_t len = 0;
int retval = ERROR_OK;
+ /* Packets larger than fast_limit bytes will be acknowledged instantly on
+ * the assumption that we're in a download and it's important to go as fast
+ * as possible. */
+ uint32_t fast_limit = 8;
/* skip command character */
packet++;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete write memory binary packet received, dropping connection");
@@ -1495,31 +1514,44 @@ static int gdb_write_memory_binary_packet(struct connection *connection,
struct gdb_connection *gdb_connection = connection->priv;
- if (gdb_connection->mem_write_error) {
+ if (gdb_connection->mem_write_error)
retval = ERROR_FAIL;
- /* now that we have reported the memory write error, we can clear the condition */
- gdb_connection->mem_write_error = false;
- }
- /* By replying the packet *immediately* GDB will send us a new packet
- * while we write the last one to the target.
- */
- if (retval == ERROR_OK)
- gdb_put_packet(connection, "OK", 2);
- else {
+ if (retval == ERROR_OK) {
+ if (len >= fast_limit) {
+ /* By replying the packet *immediately* GDB will send us a new packet
+ * while we write the last one to the target.
+ * We only do this for larger writes, so that users who do something like:
+ * p *((int*)0xdeadbeef)=8675309
+ * will get immediate feedback that that write failed.
+ */
+ gdb_put_packet(connection, "OK", 2);
+ }
+ } else {
retval = gdb_error(connection, retval);
+ /* now that we have reported the memory write error, we can clear the condition */
+ gdb_connection->mem_write_error = false;
if (retval != ERROR_OK)
return retval;
}
if (len) {
- LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
+ LOG_DEBUG("addr: 0x%" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
retval = target_write_buffer(target, addr, len, (uint8_t *)separator);
if (retval != ERROR_OK)
gdb_connection->mem_write_error = true;
}
+ if (len < fast_limit) {
+ if (retval != ERROR_OK) {
+ gdb_error(connection, retval);
+ gdb_connection->mem_write_error = false;
+ } else {
+ gdb_put_packet(connection, "OK", 2);
+ }
+ }
+
return ERROR_OK;
}
@@ -1528,13 +1560,13 @@ static int gdb_step_continue_packet(struct connection *connection,
{
struct target *target = get_target_from_connection(connection);
int current = 0;
- uint32_t address = 0x0;
+ uint64_t address = 0x0;
int retval = ERROR_OK;
LOG_DEBUG("-");
if (packet_size > 1)
- address = strtoul(packet + 1, NULL, 16);
+ address = strtoull(packet + 1, NULL, 16);
else
current = 1;
@@ -1558,7 +1590,7 @@ static int gdb_breakpoint_watchpoint_packet(struct connection *connection,
int type;
enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
enum watchpoint_rw wp_type = WPT_READ /* dummy init to avoid warning */;
- uint32_t address;
+ uint64_t address;
uint32_t size;
char *separator;
int retval;
@@ -1590,7 +1622,7 @@ static int gdb_breakpoint_watchpoint_packet(struct connection *connection,
return ERROR_SERVER_REMOTE_CLOSED;
}
- address = strtoul(separator + 1, &separator, 16);
+ address = strtoull(separator + 1, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
@@ -2268,6 +2300,95 @@ error:
return retval;
}
+static int gdb_generate_thread_list(struct target *target, char **thread_list_out)
+{
+ struct rtos *rtos = target->rtos;
+ int retval = ERROR_OK;
+ char *thread_list = NULL;
+ int pos = 0;
+ int size = 0;
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "\n"
+ "\n");
+
+ if (rtos != NULL) {
+ for (int i = 0; i < rtos->thread_count; i++) {
+ struct thread_detail *thread_detail = &rtos->thread_details[i];
+
+ if (!thread_detail->exists)
+ continue;
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "", thread_detail->threadid);
+
+ if (thread_detail->thread_name_str != NULL)
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "Name: %s", thread_detail->thread_name_str);
+
+ if (thread_detail->extra_info_str != NULL) {
+ if (thread_detail->thread_name_str != NULL)
+ xml_printf(&retval, &thread_list, &pos, &size,
+ ", ");
+ xml_printf(&retval, &thread_list, &pos, &size,
+ thread_detail->extra_info_str);
+ }
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "\n");
+ }
+ }
+
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "\n");
+
+ if (retval == ERROR_OK)
+ *thread_list_out = thread_list;
+ else
+ free(thread_list);
+
+ return retval;
+}
+
+static int gdb_get_thread_list_chunk(struct target *target, char **thread_list,
+ char **chunk, int32_t offset, uint32_t length)
+{
+ if (*thread_list == NULL) {
+ int retval = gdb_generate_thread_list(target, thread_list);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Unable to Generate Thread List");
+ return ERROR_FAIL;
+ }
+ }
+
+ size_t thread_list_length = strlen(*thread_list);
+ char transfer_type;
+
+ length = MIN(length, thread_list_length - offset);
+ if (length < (thread_list_length - offset))
+ transfer_type = 'm';
+ else
+ transfer_type = 'l';
+
+ *chunk = malloc(length + 2);
+ if (*chunk == NULL) {
+ LOG_ERROR("Unable to allocate memory");
+ return ERROR_FAIL;
+ }
+
+ (*chunk)[0] = transfer_type;
+ strncpy((*chunk) + 1, (*thread_list) + offset, length);
+ (*chunk)[1 + length] = '\0';
+
+ /* After gdb-server sends out last chunk, invalidate thread list. */
+ if (transfer_type == 'l') {
+ free(*thread_list);
+ *thread_list = NULL;
+ }
+
+ return ERROR_OK;
+}
+
static int gdb_query_packet(struct connection *connection,
char const *packet, int packet_size)
{
@@ -2279,7 +2400,7 @@ static int gdb_query_packet(struct connection *connection,
if (packet_size > 6) {
char *cmd;
cmd = malloc((packet_size - 6) / 2 + 1);
- int len = unhexify(cmd, packet + 6, (packet_size - 6) / 2);
+ size_t len = unhexify((uint8_t *)cmd, packet + 6, (packet_size - 6) / 2);
cmd[len] = 0;
/* We want to print all debug output to GDB connection */
@@ -2302,13 +2423,13 @@ static int gdb_query_packet(struct connection *connection,
char gdb_reply[10];
char *separator;
uint32_t checksum;
- uint32_t addr = 0;
+ target_addr_t addr = 0;
uint32_t len = 0;
/* skip command character */
packet += 5;
- addr = strtoul(packet, &separator, 16);
+ addr = strtoull(packet, &separator, 16);
if (*separator != ',') {
LOG_ERROR("incomplete read memory packet received, dropping connection");
@@ -2357,7 +2478,7 @@ static int gdb_query_packet(struct connection *connection,
&buffer,
&pos,
&size,
- "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;QStartNoAckMode+",
+ "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;qXfer:threads:read+;QStartNoAckMode+;vContSupported+",
(GDB_BUFFER_SIZE - 1),
((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
(gdb_target_desc_supported == 1) ? '+' : '-');
@@ -2403,6 +2524,37 @@ static int gdb_query_packet(struct connection *connection,
gdb_put_packet(connection, xml, strlen(xml));
+ free(xml);
+ return ERROR_OK;
+ } else if (strncmp(packet, "qXfer:threads:read:", 19) == 0) {
+ char *xml = NULL;
+ int retval = ERROR_OK;
+
+ int offset;
+ unsigned int length;
+
+ /* skip command character */
+ packet += 19;
+
+ if (decode_xfer_read(packet, NULL, &offset, &length) < 0) {
+ gdb_send_error(connection, 01);
+ return ERROR_OK;
+ }
+
+ /* Target should prepare correct thread list for annex.
+ * The first character of returned xml is 'm' or 'l'. 'm' for
+ * there are *more* chunks to transfer. 'l' for it is the *last*
+ * chunk of target description.
+ */
+ retval = gdb_get_thread_list_chunk(target, &gdb_connection->thread_list,
+ &xml, offset, length);
+ if (retval != ERROR_OK) {
+ gdb_error(connection, retval);
+ return retval;
+ }
+
+ gdb_put_packet(connection, xml, strlen(xml));
+
free(xml);
return ERROR_OK;
} else if (strncmp(packet, "QStartNoAckMode", 15) == 0) {
@@ -2415,13 +2567,115 @@ static int gdb_query_packet(struct connection *connection,
return ERROR_OK;
}
+static bool gdb_handle_vcont_packet(struct connection *connection, const char *packet, int packet_size)
+{
+ struct gdb_connection *gdb_connection = connection->priv;
+ struct target *target = get_target_from_connection(connection);
+ const char *parse = packet;
+ int retval;
+
+ /* query for vCont supported */
+ if (parse[0] == '?') {
+ if (target->type->step != NULL) {
+ /* gdb doesn't accept c without C and s without S */
+ gdb_put_packet(connection, "vCont;c;C;s;S", 13);
+ return true;
+ }
+ return false;
+ }
+
+ if (parse[0] == ';') {
+ ++parse;
+ --packet_size;
+ }
+
+ /* simple case, a continue packet */
+ if (parse[0] == 'c') {
+ LOG_DEBUG("target %s continue", target_name(target));
+ log_add_callback(gdb_log_callback, connection);
+ retval = target_resume(target, 1, 0, 0, 0);
+ if (retval == ERROR_OK) {
+ gdb_connection->frontend_state = TARGET_RUNNING;
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_START);
+ }
+ return true;
+ }
+
+ /* single-step or step-over-breakpoint */
+ if (parse[0] == 's') {
+ if (strncmp(parse, "s:", 2) == 0) {
+ int handle_breakpoint = 1;
+ struct target *ct = target;
+ int64_t thread_id;
+ char *endp;
+
+ parse += 2;
+ packet_size -= 2;
+
+ thread_id = strtoll(parse, &endp, 16);
+ if (endp != NULL) {
+ packet_size -= endp - parse;
+ parse = endp;
+ }
+
+ if (target->rtos != NULL)
+ target->rtos->gdb_target_for_threadid(connection, thread_id, &ct);
+
+ if (parse[0] == ';') {
+ ++parse;
+ --packet_size;
+
+ if (parse[0] == 'c') {
+ parse += 1;
+ packet_size -= 1;
+
+ handle_breakpoint = 0;
+ }
+ }
+
+ LOG_DEBUG("target %s single-step thread %"PRId64, target_name(ct), thread_id);
+ retval = target_step(ct, 1, 0, handle_breakpoint);
+ if (retval == ERROR_OK) {
+ gdb_signal_reply(target, connection);
+ /* stop forwarding log packets! */
+ log_remove_callback(gdb_log_callback, connection);
+ } else
+ if (retval == ERROR_TARGET_TIMEOUT) {
+ gdb_connection->frontend_state = TARGET_RUNNING;
+ target_call_event_callbacks(ct, TARGET_EVENT_GDB_START);
+ }
+ } else {
+ LOG_ERROR("Unknown vCont packet");
+ return false;
+ }
+ return true;
+ }
+
+ return false;
+}
+
static int gdb_v_packet(struct connection *connection,
char const *packet, int packet_size)
{
struct gdb_connection *gdb_connection = connection->priv;
- struct gdb_service *gdb_service = connection->service->priv;
+ struct target *target;
int result;
+ target = get_target_from_connection(connection);
+
+ if (strncmp(packet, "vCont", 5) == 0) {
+ bool handled;
+
+ packet += 5;
+ packet_size -= 5;
+
+ handled = gdb_handle_vcont_packet(connection, packet, packet_size);
+ if (!handled)
+ gdb_put_packet(connection, "", 0);
+
+ return ERROR_OK;
+ }
+
/* if flash programming disabled - send a empty reply */
if (gdb_flash_program == 0) {
@@ -2458,18 +2712,18 @@ static int gdb_v_packet(struct connection *connection,
flash_set_dirty();
/* perform any target specific operations before the erase */
- target_call_event_callbacks(gdb_service->target,
+ target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_ERASE_START);
/* vFlashErase:addr,length messages require region start and
* end to be "block" aligned ... if padding is ever needed,
* GDB will have become dangerously confused.
*/
- result = flash_erase_address_range(gdb_service->target,
- false, addr, length);
+ result = flash_erase_address_range(target, false, addr,
+ length);
/* perform any target specific operations after the erase */
- target_call_event_callbacks(gdb_service->target,
+ target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_ERASE_END);
/* perform erase */
@@ -2524,10 +2778,12 @@ static int gdb_v_packet(struct connection *connection,
/* process the flashing buffer. No need to erase as GDB
* always issues a vFlashErase first. */
- target_call_event_callbacks(gdb_service->target,
+ target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_WRITE_START);
- result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0);
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_END);
+ result = flash_write(target, gdb_connection->vflash_image,
+ &written, 0);
+ target_call_event_callbacks(target,
+ TARGET_EVENT_GDB_FLASH_WRITE_END);
if (result != ERROR_OK) {
if (result == ERROR_FLASH_DST_OUT_OF_BANK)
gdb_put_packet(connection, "E.memtype", 9);
@@ -2551,9 +2807,8 @@ static int gdb_v_packet(struct connection *connection,
static int gdb_detach(struct connection *connection)
{
- struct gdb_service *gdb_service = connection->service->priv;
-
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH);
+ target_call_event_callbacks(get_target_from_connection(connection),
+ TARGET_EVENT_GDB_DETACH);
return gdb_put_packet(connection, "OK", 2);
}
@@ -2632,14 +2887,15 @@ 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;
+ struct target *target;
char const *packet = gdb_packet_buffer;
int packet_size;
int retval;
struct gdb_connection *gdb_con = connection->priv;
static int extended_protocol;
+ target = get_target_from_connection(connection);
+
/* drain input buffer. If one of the packets fail, then an error
* packet is replied, if applicable.
*
@@ -2809,8 +3065,8 @@ static int gdb_input_inner(struct connection *connection)
break;
case 'R':
/* handle extended restart packet */
- breakpoint_clear_target(gdb_service->target);
- watchpoint_clear_target(gdb_service->target);
+ breakpoint_clear_target(target);
+ watchpoint_clear_target(target);
command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %s",
target_name(target));
/* set connection as attached after reset */
@@ -2859,7 +3115,10 @@ static int gdb_input_inner(struct connection *connection)
if (gdb_con->ctrl_c) {
if (target->state == TARGET_RUNNING) {
- retval = target_halt(target);
+ struct target *t = target;
+ if (target->rtos)
+ target->rtos->gdb_target_for_threadid(connection, target->rtos->current_threadid, &t);
+ retval = target_halt(t);
if (retval != ERROR_OK)
target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
gdb_con->ctrl_c = 0;
@@ -2923,6 +3182,11 @@ static int gdb_target_start(struct target *target, const char *port)
static int gdb_target_add_one(struct target *target)
{
+ if (strcmp(gdb_port, "disabled") == 0) {
+ LOG_INFO("gdb port disabled");
+ return ERROR_OK;
+ }
+
/* one gdb instance per smp list */
if ((target->smp) && (target->gdb_service))
return ERROR_OK;
@@ -2937,7 +3201,13 @@ static int gdb_target_add_one(struct target *target)
if (!*end) {
if (parse_long(gdb_port_next, &portnumber) == ERROR_OK) {
free(gdb_port_next);
- gdb_port_next = alloc_printf("%d", portnumber+1);
+ if (portnumber) {
+ gdb_port_next = alloc_printf("%d", portnumber+1);
+ } else {
+ /* Don't increment if gdb_port is 0, since we're just
+ * trying to allocate an unused port. */
+ gdb_port_next = strdup("0");
+ }
}
}
}
@@ -2946,6 +3216,11 @@ static int gdb_target_add_one(struct target *target)
int gdb_target_add_all(struct target *target)
{
+ if (strcmp(gdb_port, "disabled") == 0) {
+ LOG_INFO("gdb server disabled");
+ return ERROR_OK;
+ }
+
if (NULL == target) {
LOG_WARNING("gdb services need one or more targets defined");
return ERROR_OK;
@@ -3111,7 +3386,7 @@ static const struct command_registration gdb_command_handlers[] = {
"server listens for the next port number after the "
"base port number specified. "
"No arguments reports GDB port. \"pipe\" means listen to stdin "
- "output to stdout, an integer is base port number, \"disable\" disables "
+ "output to stdout, an integer is base port number, \"disabled\" disables "
"port. Any other string is are interpreted as named pipe to listen to. "
"Output pipe is the same name as input pipe, but with 'o' appended.",
.usage = "[port_num]",