-/* SPDX-License-Identifier: GPL-2.0-or-later */
+// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
/* 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;
+static int gdb_actual_connections;
/* set if we are sending a memory map to gdb
* via qXfer:memory-map:read packet */
static int gdb_last_signal(struct target *target)
{
+ LOG_TARGET_DEBUG(target, "Debug reason is: %s",
+ target_debug_reason_str(target->debug_reason));
+
switch (target->debug_reason) {
case DBG_REASON_DBGRQ:
return 0x2; /* SIGINT */
case DBG_REASON_NOTHALTED:
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 (%s) - target needs reset",
+ target->debug_reason,
+ target_debug_reason_str(target->debug_reason));
return 0x0;
}
}
}
if (gdb_connection->ctrl_c) {
+ LOG_TARGET_DEBUG(target, "Responding with signal 2 (SIGINT) to debugger due to Ctrl-C");
signal_var = 0x2;
} else
signal_var = gdb_last_signal(ct);
local_list = realloc(local_list, combined_allocated * sizeof(struct reg *));
if (!local_list) {
LOG_ERROR("realloc(%zu) failed", combined_allocated * sizeof(struct reg *));
+ free(reg_list);
return ERROR_FAIL;
}
}
gdb_connection->noack_mode = 1;
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
+ } else if (target->type->gdb_query_custom) {
+ char *buffer = NULL;
+ int ret = target->type->gdb_query_custom(target, packet, &buffer);
+ gdb_put_packet(connection, buffer, strlen(buffer));
+ return ret;
}
gdb_put_packet(connection, "", 0);
return ERROR_OK;
}
-static bool gdb_handle_vcont_packet(struct connection *connection, const char *packet, int packet_size)
+static bool gdb_handle_vcont_packet(struct connection *connection, const char *packet,
+ __attribute__((unused)) int packet_size)
{
struct gdb_connection *gdb_connection = connection->priv;
struct target *target = get_target_from_connection(connection);
if (parse[0] == ';') {
++parse;
- --packet_size;
}
/* simple case, a continue packet */
gdb_running_type = 's';
bool fake_step = false;
- if (strncmp(parse, "s:", 2) == 0) {
- struct target *ct = target;
- int current_pc = 1;
- int64_t thread_id;
+ struct target *ct = target;
+ int current_pc = 1;
+ int64_t thread_id;
+ parse++;
+ if (parse[0] == ':') {
char *endp;
-
- parse += 2;
- packet_size -= 2;
-
+ parse++;
thread_id = strtoll(parse, &endp, 16);
if (endp) {
- packet_size -= endp - parse;
parse = endp;
}
+ } else {
+ thread_id = 0;
+ }
- if (target->rtos) {
- /* FIXME: why is this necessary? rtos state should be up-to-date here already! */
- rtos_update_threads(target);
+ if (target->rtos) {
+ /* FIXME: why is this necessary? rtos state should be up-to-date here already! */
+ rtos_update_threads(target);
- target->rtos->gdb_target_for_threadid(connection, thread_id, &ct);
+ target->rtos->gdb_target_for_threadid(connection, thread_id, &ct);
- /*
- * check if the thread to be stepped is the current rtos thread
- * if not, we must fake the step
- */
- if (target->rtos->current_thread != thread_id)
- fake_step = true;
- }
+ /*
+ * check if the thread to be stepped is the current rtos thread
+ * if not, we must fake the step
+ */
+ if (target->rtos->current_thread != thread_id)
+ fake_step = true;
+ }
+
+ if (parse[0] == ';') {
+ ++parse;
- if (parse[0] == ';') {
- ++parse;
- --packet_size;
+ if (parse[0] == 'c') {
+ parse += 1;
- if (parse[0] == 'c') {
+ /* check if thread-id follows */
+ if (parse[0] == ':') {
+ int64_t tid;
parse += 1;
- /* check if thread-id follows */
- if (parse[0] == ':') {
- int64_t tid;
- parse += 1;
-
- tid = strtoll(parse, &endp, 16);
- if (tid == thread_id) {
- /*
- * Special case: only step a single thread (core),
- * keep the other threads halted. Currently, only
- * aarch64 target understands it. Other target types don't
- * care (nobody checks the actual value of 'current')
- * and it doesn't really matter. This deserves
- * a symbolic constant and a formal interface documentation
- * at a later time.
- */
- LOG_DEBUG("request to step current core only");
- /* uncomment after checking that indeed other targets are safe */
- /*current_pc = 2;*/
- }
+ tid = strtoll(parse, NULL, 16);
+ if (tid == thread_id) {
+ /*
+ * Special case: only step a single thread (core),
+ * keep the other threads halted. Currently, only
+ * aarch64 target understands it. Other target types don't
+ * care (nobody checks the actual value of 'current')
+ * and it doesn't really matter. This deserves
+ * a symbolic constant and a formal interface documentation
+ * at a later time.
+ */
+ LOG_DEBUG("request to step current core only");
+ /* uncomment after checking that indeed other targets are safe */
+ /*current_pc = 2;*/
}
}
}
+ }
- LOG_DEBUG("target %s single-step thread %"PRIx64, target_name(ct), thread_id);
- gdb_connection->output_flag = GDB_OUTPUT_ALL;
- target_call_event_callbacks(ct, TARGET_EVENT_GDB_START);
-
- /*
- * work around an annoying gdb behaviour: when the current thread
- * is changed in gdb, it assumes that the target can follow and also
- * make the thread current. This is an assumption that cannot hold
- * for a real target running a multi-threading OS. We just fake
- * the step to not trigger an internal error in gdb. See
- * https://sourceware.org/bugzilla/show_bug.cgi?id=22925 for details
- */
- if (fake_step) {
- int sig_reply_len;
- char sig_reply[128];
-
- LOG_DEBUG("fake step thread %"PRIx64, thread_id);
+ LOG_DEBUG("target %s single-step thread %"PRIx64, target_name(ct), thread_id);
+ gdb_connection->output_flag = GDB_OUTPUT_ALL;
+ target_call_event_callbacks(ct, TARGET_EVENT_GDB_START);
- sig_reply_len = snprintf(sig_reply, sizeof(sig_reply),
- "T05thread:%016"PRIx64";", thread_id);
+ /*
+ * work around an annoying gdb behaviour: when the current thread
+ * is changed in gdb, it assumes that the target can follow and also
+ * make the thread current. This is an assumption that cannot hold
+ * for a real target running a multi-threading OS. We just fake
+ * the step to not trigger an internal error in gdb. See
+ * https://sourceware.org/bugzilla/show_bug.cgi?id=22925 for details
+ */
+ if (fake_step) {
+ int sig_reply_len;
+ char sig_reply[128];
- gdb_put_packet(connection, sig_reply, sig_reply_len);
- gdb_connection->output_flag = GDB_OUTPUT_NO;
+ LOG_DEBUG("fake step thread %"PRIx64, thread_id);
- return true;
- }
+ sig_reply_len = snprintf(sig_reply, sizeof(sig_reply),
+ "T05thread:%016"PRIx64";", thread_id);
- /* support for gdb_sync command */
- if (gdb_connection->sync) {
- gdb_connection->sync = false;
- if (ct->state == TARGET_HALTED) {
- LOG_DEBUG("stepi ignored. GDB will now fetch the register state "
- "from the target.");
- gdb_sig_halted(connection);
- gdb_connection->output_flag = GDB_OUTPUT_NO;
- } else
- gdb_connection->frontend_state = TARGET_RUNNING;
- return true;
- }
+ gdb_put_packet(connection, sig_reply, sig_reply_len);
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
- retval = target_step(ct, current_pc, 0, 0);
- if (retval == ERROR_TARGET_NOT_HALTED)
- LOG_INFO("target %s was not halted when step was requested", target_name(ct));
+ return true;
+ }
- /* if step was successful send a reply back to gdb */
- if (retval == ERROR_OK) {
- retval = target_poll(ct);
- if (retval != ERROR_OK)
- LOG_DEBUG("error polling target %s after successful step", target_name(ct));
- /* send back signal information */
- gdb_signal_reply(ct, connection);
- /* stop forwarding log packets! */
+ /* support for gdb_sync command */
+ if (gdb_connection->sync) {
+ gdb_connection->sync = false;
+ if (ct->state == TARGET_HALTED) {
+ LOG_DEBUG("stepi ignored. GDB will now fetch the register state "
+ "from the target.");
+ gdb_sig_halted(connection);
gdb_connection->output_flag = GDB_OUTPUT_NO;
} else
gdb_connection->frontend_state = TARGET_RUNNING;
- } else {
- LOG_ERROR("Unknown vCont packet");
- return false;
+ return true;
}
+
+ retval = target_step(ct, current_pc, 0, 0);
+ if (retval == ERROR_TARGET_NOT_HALTED)
+ LOG_INFO("target %s was not halted when step was requested", target_name(ct));
+
+ /* if step was successful send a reply back to gdb */
+ if (retval == ERROR_OK) {
+ retval = target_poll(ct);
+ if (retval != ERROR_OK)
+ LOG_DEBUG("error polling target %s after successful step", target_name(ct));
+ /* send back signal information */
+ gdb_signal_reply(ct, connection);
+ /* stop forwarding log packets! */
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
+ } else
+ gdb_connection->frontend_state = TARGET_RUNNING;
return true;
}
-
+ LOG_ERROR("Unknown vCont packet");
return false;
}
free(gdb_port);
free(gdb_port_next);
}
+
+int gdb_get_actual_connections(void)
+{
+ return gdb_actual_connections;
+}
Code Review / openocd.git / blobdiff