* found in most modern embedded processors.
*/
+enum gdb_output_flag {
+ /* GDB doesn't accept 'O' packets */
+ GDB_OUTPUT_NO,
+ /* GDB accepts 'O' packets */
+ GDB_OUTPUT_ALL,
+};
+
struct target_desc_format {
char *tdesc;
uint32_t tdesc_length;
struct target_desc_format target_desc;
/* temporarily used for thread list support */
char *thread_list;
+ /* flag to mask the output from gdb_log_callback() */
+ enum gdb_output_flag output_flag;
};
#if 0
fd_set read_fds;
struct gdb_connection *gdb_con = connection->priv;
int t;
- if (got_data == NULL)
+ if (!got_data)
got_data = &t;
*got_data = 0;
if (gdb_con->buf_cnt > 0)
break;
if (gdb_con->buf_cnt == 0) {
+ LOG_DEBUG("GDB connection closed by the remote client");
gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
static int gdb_write(struct connection *connection, void *data, int len)
{
struct gdb_connection *gdb_con = connection->priv;
- if (gdb_con->closed)
+ if (gdb_con->closed) {
+ LOG_DEBUG("GDB socket marked as closed, cannot write to it.");
return ERROR_SERVER_REMOTE_CLOSED;
+ }
if (connection_write(connection, data, len) == len)
return ERROR_OK;
+
+ LOG_WARNING("Error writing to GDB socket. Dropping the connection.");
gdb_con->closed = true;
return ERROR_SERVER_REMOTE_CLOSED;
}
/* Does packet at least have a prefix that is printable?
* Look within the first 50 chars of the packet. */
const char *colon = memchr(packet, ':', MIN(50, packet_len));
- const bool packet_has_prefix = (colon != NULL);
+ const bool packet_has_prefix = (colon);
const bool packet_prefix_printable = (packet_has_prefix && nonprint > colon);
if (packet_prefix_printable) {
break;
else if (reply == '-') {
/* Stop sending output packets for now */
- log_remove_callback(gdb_log_callback, connection);
+ gdb_con->output_flag = GDB_OUTPUT_NO;
LOG_WARNING("negative reply, retrying");
} else if (reply == 0x3) {
gdb_con->ctrl_c = true;
break;
else if (reply == '-') {
/* Stop sending output packets for now */
- log_remove_callback(gdb_log_callback, connection);
+ gdb_con->output_flag = GDB_OUTPUT_NO;
LOG_WARNING("negative reply, retrying");
} else if (reply == '$') {
LOG_ERROR("GDB missing ack(1) - assumed good");
bin_size = strlen(line);
hex_buffer = malloc(bin_size * 2 + 2);
- if (hex_buffer == NULL)
+ if (!hex_buffer)
return ERROR_GDB_BUFFER_TOO_SMALL;
hex_buffer[0] = 'O';
sig_reply_len = snprintf(sig_reply, sizeof(sig_reply), "W00");
} else {
struct target *ct;
- if (target->rtos != NULL) {
+ if (target->rtos) {
target->rtos->current_threadid = target->rtos->current_thread;
target->rtos->gdb_target_for_threadid(connection, target->rtos->current_threadid, &ct);
} else {
}
current_thread[0] = '\0';
- if (target->rtos != NULL)
+ if (target->rtos)
snprintf(current_thread, sizeof(current_thread), "thread:%" PRIx64 ";",
target->rtos->current_thread);
*/
if (gdb_connection->frontend_state == TARGET_RUNNING) {
/* stop forwarding log packets! */
- log_remove_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
/* check fileio first */
if (target_get_gdb_fileio_info(target, target->fileio_info) == ERROR_OK)
gdb_connection->target_desc.tdesc = NULL;
gdb_connection->target_desc.tdesc_length = 0;
gdb_connection->thread_list = NULL;
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
/* send ACK to GDB for debug request */
gdb_write(connection, "+", 1);
breakpoint_clear_target(target);
watchpoint_clear_target(target);
- /* remove the initial ACK from the incoming buffer */
+ /* Since version 3.95 (gdb-19990504), with the exclusion of 6.5~6.8, GDB
+ * sends an ACK at connection with the following comment in its source code:
+ * "Ack any packet which the remote side has already sent."
+ * LLDB does the same since the first gdb-remote implementation.
+ * Remove the initial ACK from the incoming buffer.
+ */
retval = gdb_get_char(connection, &initial_ack);
if (retval != ERROR_OK)
return retval;
- /* FIX!!!??? would we actually ever receive a + here???
- * Not observed.
- */
if (initial_ack != '+')
gdb_putback_char(connection, initial_ack);
+
target_call_event_callbacks(target, TARGET_EVENT_GDB_ATTACH);
if (target->rtos) {
}
gdb_actual_connections++;
- log_printf_lf(all_targets->next != NULL ? LOG_LVL_INFO : LOG_LVL_DEBUG,
+ log_printf_lf(all_targets->next ? LOG_LVL_INFO : LOG_LVL_DEBUG,
__FILE__, __LINE__, __func__,
"New GDB Connection: %d, Target %s, state: %s",
gdb_actual_connections,
* register callback to be informed about target events */
target_register_event_callback(gdb_target_callback_event_handler, connection);
+ log_add_callback(gdb_log_callback, connection);
+
return ERROR_OK;
}
LOG_DEBUG("-");
#endif
- if ((target->rtos != NULL) && (ERROR_OK == rtos_get_gdb_reg_list(connection)))
+ if ((target->rtos) && (rtos_get_gdb_reg_list(connection) == ERROR_OK))
return ERROR_OK;
retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
return gdb_error(connection, retval);
for (i = 0; i < reg_list_size; i++) {
- if (reg_list[i] == NULL || reg_list[i]->exist == false || reg_list[i]->hidden)
+ if (!reg_list[i] || reg_list[i]->exist == false || reg_list[i]->hidden)
continue;
reg_packet_size += DIV_ROUND_UP(reg_list[i]->size, 8) * 2;
}
assert(reg_packet_size > 0);
reg_packet = malloc(reg_packet_size + 1); /* plus one for string termination null */
- if (reg_packet == NULL)
+ if (!reg_packet)
return ERROR_FAIL;
reg_packet_p = reg_packet;
for (i = 0; i < reg_list_size; i++) {
- if (reg_list[i] == NULL || reg_list[i]->exist == false || reg_list[i]->hidden)
+ if (!reg_list[i] || reg_list[i]->exist == false || reg_list[i]->hidden)
continue;
if (!reg_list[i]->valid) {
retval = reg_list[i]->type->get(reg_list[i]);
LOG_DEBUG("-");
#endif
- if ((target->rtos != NULL) && (ERROR_OK == rtos_get_gdb_reg(connection, reg_num)))
+ if ((target->rtos) && (rtos_get_gdb_reg(connection, reg_num) == ERROR_OK))
return ERROR_OK;
retval = target_get_gdb_reg_list_noread(target, ®_list, ®_list_size,
return gdb_error(connection, retval);
if (reg_list_size <= reg_num) {
- LOG_ERROR("gdb requested a non-existing register");
+ LOG_ERROR("gdb requested a non-existing register (reg_num=%d)", reg_num);
return ERROR_SERVER_REMOTE_CLOSED;
}
uint8_t *bin_buf = malloc(chars / 2);
gdb_target_to_reg(target, separator + 1, chars, bin_buf);
- if ((target->rtos != NULL) &&
- (ERROR_OK == rtos_set_reg(connection, reg_num, bin_buf))) {
+ if ((target->rtos) &&
+ (rtos_set_reg(connection, reg_num, bin_buf) == ERROR_OK)) {
free(bin_buf);
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
}
if (reg_list_size <= reg_num) {
- LOG_ERROR("gdb requested a non-existing register");
+ LOG_ERROR("gdb requested a non-existing register (reg_num=%d)", reg_num);
free(bin_buf);
free(reg_list);
return ERROR_SERVER_REMOTE_CLOSED;
LOG_DEBUG("addr: 0x%16.16" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
- retval = target_read_buffer(target, addr, len, buffer);
+ retval = ERROR_NOT_IMPLEMENTED;
+ if (target->rtos)
+ retval = rtos_read_buffer(target, addr, len, buffer);
+ if (retval == ERROR_NOT_IMPLEMENTED)
+ retval = target_read_buffer(target, addr, len, buffer);
if ((retval != ERROR_OK) && !gdb_report_data_abort) {
/* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
if (unhexify(buffer, separator, len) != len)
LOG_ERROR("unable to decode memory packet");
- retval = target_write_buffer(target, addr, len, buffer);
+ retval = ERROR_NOT_IMPLEMENTED;
+ if (target->rtos)
+ retval = rtos_write_buffer(target, addr, len, buffer);
+ if (retval == ERROR_NOT_IMPLEMENTED)
+ retval = target_write_buffer(target, addr, len, buffer);
if (retval == ERROR_OK)
gdb_put_packet(connection, "OK", 2);
if (len) {
LOG_DEBUG("addr: 0x%" PRIx64 ", len: 0x%8.8" PRIx32 "", addr, len);
- retval = target_write_buffer(target, addr, len, (uint8_t *)separator);
+ retval = ERROR_NOT_IMPLEMENTED;
+ if (target->rtos)
+ retval = rtos_write_buffer(target, addr, len, (uint8_t *)separator);
+ if (retval == ERROR_NOT_IMPLEMENTED)
+ retval = target_write_buffer(target, addr, len, (uint8_t *)separator);
+
if (retval != ERROR_OK)
gdb_connection->mem_write_error = true;
}
int first = 1;
for (;; ) {
- if ((*xml == NULL) || (!first)) {
+ if ((!*xml) || (!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) {
free(t);
*retval = ERROR_SERVER_REMOTE_CLOSED;
return;
{
/* Locate the annex. */
const char *annex_end = strchr(buf, ':');
- if (annex_end == NULL)
+ if (!annex_end)
return ERROR_FAIL;
/* After the read marker and annex, qXfer looks like a
*len = strtoul(separator + 1, NULL, 16);
/* Extract the annex if needed */
- if (annex != NULL) {
+ if (annex) {
*annex = strndup(buf, annex_end - buf);
- if (*annex == NULL)
+ if (!*annex)
return ERROR_FAIL;
}
{
int tbl_sz = *num_arch_defined_types;
- if (type_id != NULL && (strcmp(type_id, ""))) {
+ if (type_id && (strcmp(type_id, ""))) {
for (int j = 0; j < (tbl_sz + 1); j++) {
if (!((*arch_defined_types_list)[j])) {
(*arch_defined_types_list)[tbl_sz++] = type_id;
} else if (type->type_class == REG_TYPE_CLASS_UNION) {
struct reg_data_type_union_field *field;
field = type->reg_type_union->fields;
- while (field != NULL) {
+ while (field) {
struct reg_data_type *data_type = field->type;
if (data_type->type == REG_TYPE_ARCH_DEFINED) {
if (lookup_add_arch_defined_types(arch_defined_types_list, data_type->id,
type->id);
field = type->reg_type_union->fields;
- while (field != NULL) {
+ while (field) {
xml_printf(&retval, tdesc, pos, size,
"<field name=\"%s\" type=\"%s\"/>\n",
field->name, field->type->id);
xml_printf(&retval, tdesc, pos, size,
"<struct id=\"%s\" size=\"%" PRIu32 "\">\n",
type->id, type->reg_type_struct->size);
- while (field != NULL) {
+ while (field) {
xml_printf(&retval, tdesc, pos, size,
"<field name=\"%s\" start=\"%" PRIu32 "\" end=\"%" PRIu32 "\" type=\"%s\" />\n",
field->name, field->bitfield->start, field->bitfield->end,
field = field->next;
}
} else {
- while (field != NULL) {
+ while (field) {
struct reg_data_type *data_type = field->type;
if (data_type->type == REG_TYPE_ARCH_DEFINED) {
if (lookup_add_arch_defined_types(arch_defined_types_list, data_type->id,
xml_printf(&retval, tdesc, pos, size,
"<struct id=\"%s\">\n",
type->id);
- while (field != NULL) {
+ while (field) {
xml_printf(&retval, tdesc, pos, size,
"<field name=\"%s\" type=\"%s\"/>\n",
field->name, field->type->id);
struct reg_data_type_flags_field *field;
field = type->reg_type_flags->fields;
- while (field != NULL) {
+ while (field) {
xml_printf(&retval, tdesc, pos, size,
"<field name=\"%s\" start=\"%" PRIu32 "\" end=\"%" PRIu32 "\" type=\"%s\" />\n",
field->name, field->bitfield->start, field->bitfield->end,
if (reg_list[i]->exist == false || reg_list[i]->hidden)
continue;
- if (reg_list[i]->feature != NULL
- && reg_list[i]->feature->name != NULL
+ if (reg_list[i]->feature
+ && reg_list[i]->feature->name
&& (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
return ERROR_OK;
}
+/* Create a register list that's the union of all the registers of the SMP
+ * group this target is in. If the target is not part of an SMP group, this
+ * returns the same as target_get_gdb_reg_list_noread().
+ */
+static int smp_reg_list_noread(struct target *target,
+ struct reg **combined_list[], int *combined_list_size,
+ enum target_register_class reg_class)
+{
+ if (!target->smp)
+ return target_get_gdb_reg_list_noread(target, combined_list,
+ combined_list_size, REG_CLASS_ALL);
+
+ unsigned int combined_allocated = 256;
+ struct reg **local_list = malloc(combined_allocated * sizeof(struct reg *));
+ if (!local_list) {
+ LOG_ERROR("malloc(%zu) failed", combined_allocated * sizeof(struct reg *));
+ return ERROR_FAIL;
+ }
+ unsigned int local_list_size = 0;
+
+ struct target_list *head;
+ foreach_smp_target(head, target->smp_targets) {
+ if (!target_was_examined(head->target))
+ continue;
+
+ struct reg **reg_list = NULL;
+ int reg_list_size;
+ int result = target_get_gdb_reg_list_noread(head->target, ®_list,
+ ®_list_size, reg_class);
+ if (result != ERROR_OK) {
+ free(local_list);
+ return result;
+ }
+ for (int i = 0; i < reg_list_size; i++) {
+ bool found = false;
+ struct reg *a = reg_list[i];
+ if (a->exist) {
+ /* Nested loop makes this O(n^2), but this entire function with
+ * 5 RISC-V targets takes just 2ms on my computer. Fast enough
+ * for me. */
+ for (unsigned int j = 0; j < local_list_size; j++) {
+ struct reg *b = local_list[j];
+ if (!strcmp(a->name, b->name)) {
+ found = true;
+ if (a->size != b->size) {
+ LOG_ERROR("SMP register %s is %d bits on one "
+ "target, but %d bits on another target.",
+ a->name, a->size, b->size);
+ free(reg_list);
+ free(local_list);
+ return ERROR_FAIL;
+ }
+ break;
+ }
+ }
+ if (!found) {
+ LOG_DEBUG("[%s] %s not found in combined list", target_name(target), a->name);
+ if (local_list_size >= combined_allocated) {
+ combined_allocated *= 2;
+ local_list = realloc(local_list, combined_allocated * sizeof(struct reg *));
+ if (!local_list) {
+ LOG_ERROR("realloc(%zu) failed", combined_allocated * sizeof(struct reg *));
+ return ERROR_FAIL;
+ }
+ }
+ local_list[local_list_size] = a;
+ local_list_size++;
+ }
+ }
+ }
+ free(reg_list);
+ }
+
+ if (local_list_size == 0) {
+ LOG_ERROR("Unable to get register list");
+ free(local_list);
+ return ERROR_FAIL;
+ }
+
+ /* Now warn the user about any registers that weren't found in every target. */
+ foreach_smp_target(head, target->smp_targets) {
+ if (!target_was_examined(head->target))
+ continue;
+
+ struct reg **reg_list = NULL;
+ int reg_list_size;
+ int result = target_get_gdb_reg_list_noread(head->target, ®_list,
+ ®_list_size, reg_class);
+ if (result != ERROR_OK) {
+ free(local_list);
+ return result;
+ }
+ for (unsigned int i = 0; i < local_list_size; i++) {
+ bool found = false;
+ struct reg *a = local_list[i];
+ for (int j = 0; j < reg_list_size; j++) {
+ struct reg *b = reg_list[j];
+ if (b->exist && !strcmp(a->name, b->name)) {
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ LOG_WARNING("Register %s does not exist in %s, which is part of an SMP group where "
+ "this register does exist.",
+ a->name, target_name(head->target));
+ }
+ }
+ free(reg_list);
+ }
+
+ *combined_list = local_list;
+ *combined_list_size = local_list_size;
+ return ERROR_OK;
+}
+
static int gdb_generate_target_description(struct target *target, char **tdesc_out)
{
int retval = ERROR_OK;
int size = 0;
- retval = target_get_gdb_reg_list_noread(target, ®_list,
- ®_list_size, REG_CLASS_ALL);
+ retval = smp_reg_list_noread(target, ®_list, ®_list_size,
+ REG_CLASS_ALL);
if (retval != ERROR_OK) {
LOG_ERROR("get register list failed");
/* generate architecture element if supported by target */
architecture = target_get_gdb_arch(target);
- if (architecture != NULL)
+ if (architecture)
xml_printf(&retval, &tdesc, &pos, &size,
"<architecture>%s</architecture>\n", architecture);
/* generate target description according to register list */
- if (features != NULL) {
+ if (features) {
while (features[current_feature]) {
char const **arch_defined_types = NULL;
int num_arch_defined_types = 0;
continue;
const char *type_str;
- if (reg_list[i]->reg_data_type != NULL) {
+ if (reg_list[i]->reg_data_type) {
if (reg_list[i]->reg_data_type->type == REG_TYPE_ARCH_DEFINED) {
/* generate <type... first, if there are architecture-defined types. */
if (lookup_add_arch_defined_types(&arch_defined_types,
xml_printf(&retval, &tdesc, &pos, &size,
" type=\"%s\"", type_str);
- if (reg_list[i]->group != NULL)
+ if (reg_list[i]->group)
xml_printf(&retval, &tdesc, &pos, &size,
" group=\"%s\"", reg_list[i]->group);
static int gdb_get_target_description_chunk(struct target *target, struct target_desc_format *target_desc,
char **chunk, int32_t offset, uint32_t length)
{
- if (target_desc == NULL) {
+ if (!target_desc) {
LOG_ERROR("Unable to Generate Target Description");
return ERROR_FAIL;
}
char *tdesc = target_desc->tdesc;
uint32_t tdesc_length = target_desc->tdesc_length;
- if (tdesc == NULL) {
+ if (!tdesc) {
int retval = gdb_generate_target_description(target, &tdesc);
if (retval != ERROR_OK) {
LOG_ERROR("Unable to Generate Target Description");
transfer_type = 'l';
*chunk = malloc(length + 2);
- if (*chunk == NULL) {
+ if (!*chunk) {
LOG_ERROR("Unable to allocate memory");
return ERROR_FAIL;
}
"<?xml version=\"1.0\"?>\n"
"<threads>\n");
- if (rtos != NULL) {
+ if (rtos) {
for (int i = 0; i < rtos->thread_count; i++) {
struct thread_detail *thread_detail = &rtos->thread_details[i];
if (!thread_detail->exists)
continue;
- xml_printf(&retval, &thread_list, &pos, &size,
- "<thread id=\"%" PRIx64 "\">", thread_detail->threadid);
+ if (thread_detail->thread_name_str)
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "<thread id=\"%" PRIx64 "\" name=\"%s\">",
+ thread_detail->threadid,
+ thread_detail->thread_name_str);
+ else
+ xml_printf(&retval, &thread_list, &pos, &size,
+ "<thread id=\"%" PRIx64 "\">", thread_detail->threadid);
- if (thread_detail->thread_name_str != NULL)
+ if (thread_detail->thread_name_str)
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)
+ if (thread_detail->extra_info_str) {
+ if (thread_detail->thread_name_str)
xml_printf(&retval, &thread_list, &pos, &size,
", ");
xml_printf(&retval, &thread_list, &pos, &size,
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) {
+ if (!*thread_list) {
int retval = gdb_generate_thread_list(target, thread_list);
if (retval != ERROR_OK) {
LOG_ERROR("Unable to Generate Thread List");
* of strlen(chunk) word access:
* Invalid read of size 4
* Address 0x4479934 is 44 bytes inside a block of size 45 alloc'd */
- if (*chunk == NULL) {
+ if (!*chunk) {
LOG_ERROR("Unable to allocate memory");
return ERROR_FAIL;
}
cmd[len] = 0;
/* We want to print all debug output to GDB connection */
- log_add_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_ALL;
target_call_timer_callbacks_now();
/* some commands need to know the GDB connection, make note of current
* GDB connection. */
command_run_line(cmd_ctx, cmd);
current_gdb_connection = NULL;
target_call_timer_callbacks_now();
- log_remove_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
free(cmd);
}
gdb_put_packet(connection, "OK", 2);
/* query for vCont supported */
if (parse[0] == '?') {
- if (target->type->step != NULL) {
+ if (target->type->step) {
/* gdb doesn't accept c without C and s without S */
gdb_put_packet(connection, "vCont;c;C;s;S", 13);
return true;
if (parse[0] == 'c') {
gdb_running_type = 'c';
LOG_DEBUG("target %s continue", target_name(target));
- log_add_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_ALL;
retval = target_resume(target, 1, 0, 0, 0);
if (retval == ERROR_TARGET_NOT_HALTED)
LOG_INFO("target %s was not halted when resume was requested", target_name(target));
packet_size -= 2;
thread_id = strtoll(parse, &endp, 16);
- if (endp != NULL) {
+ if (endp) {
packet_size -= endp - parse;
parse = endp;
}
- if (target->rtos != NULL) {
+ if (target->rtos) {
/* FIXME: why is this necessary? rtos state should be up-to-date here already! */
rtos_update_threads(target);
}
LOG_DEBUG("target %s single-step thread %"PRIx64, target_name(ct), thread_id);
- log_add_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_ALL;
target_call_event_callbacks(ct, TARGET_EVENT_GDB_START);
/*
"T05thread:%016"PRIx64";", thread_id);
gdb_put_packet(connection, sig_reply, sig_reply_len);
- log_remove_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
return true;
}
LOG_DEBUG("stepi ignored. GDB will now fetch the register state "
"from the target.");
gdb_sig_halted(connection);
- log_remove_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
} else
gdb_connection->frontend_state = TARGET_RUNNING;
return true;
/* send back signal information */
gdb_signal_reply(ct, connection);
/* stop forwarding log packets! */
- log_remove_callback(gdb_log_callback, connection);
+ gdb_connection->output_flag = GDB_OUTPUT_NO;
} else
gdb_connection->frontend_state = TARGET_RUNNING;
} else {
return NULL;
const char *end = strchr(hex, sep);
- if (end == NULL)
+ if (!end)
hexlen = strlen(hex);
else
hexlen = end - hex;
size_t count = hexlen / 2;
char *decoded = malloc(count + 1);
- if (decoded == NULL)
+ if (!decoded)
return NULL;
size_t converted = unhexify((void *)decoded, hex, count);
free(next_hex_encoded_field(&parse, ';'));
char *cmdline = next_hex_encoded_field(&parse, ';');
- char *arg;
- while (cmdline != NULL && (arg = next_hex_encoded_field(&parse, ';')) != NULL) {
+ while (cmdline) {
+ char *arg = next_hex_encoded_field(&parse, ';');
+ if (!arg)
+ break;
char *new_cmdline = alloc_printf("%s %s", cmdline, arg);
free(cmdline);
free(arg);
cmdline = new_cmdline;
}
- if (cmdline != NULL) {
- if (target->semihosting != NULL) {
+ if (cmdline) {
+ if (target->semihosting) {
LOG_INFO("GDB set inferior command line to '%s'", cmdline);
free(target->semihosting->cmdline);
target->semihosting->cmdline = cmdline;
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) {
gdb_connection->vflash_image = malloc(sizeof(struct image));
image_open(gdb_connection->vflash_image, "", "build");
}
struct connection *connection = priv;
struct gdb_connection *gdb_con = connection->priv;
+ if (gdb_con->output_flag == GDB_OUTPUT_NO)
+ /* No out allowed */
+ return;
+
if (gdb_con->busy) {
/* do not reply this using the O packet */
return;
case 's':
{
gdb_thread_packet(connection, packet, packet_size);
- log_add_callback(gdb_log_callback, connection);
+ gdb_con->output_flag = GDB_OUTPUT_ALL;
if (gdb_con->mem_write_error) {
LOG_ERROR("Memory write failure!");
gdb_sig_halted(connection);
/* stop forwarding log packets! */
- log_remove_callback(gdb_log_callback, connection);
+ gdb_con->output_flag = GDB_OUTPUT_NO;
} else {
/* We're running/stepping, in which case we can
* forward log output until the target is halted
* Fretcode,errno,Ctrl-C flag;call-specific attachment
*/
gdb_con->frontend_state = TARGET_RUNNING;
- log_add_callback(gdb_log_callback, connection);
+ gdb_con->output_flag = GDB_OUTPUT_ALL;
gdb_fileio_response_packet(connection, packet, packet_size);
break;
return ERROR_OK;
}
+static void gdb_keep_client_alive(struct connection *connection)
+{
+ struct gdb_connection *gdb_con = connection->priv;
+
+ if (gdb_con->busy) {
+ /* do not send packets, retry asap */
+ return;
+ }
+
+ switch (gdb_con->output_flag) {
+ case GDB_OUTPUT_NO:
+ /* no need for keep-alive */
+ break;
+ case GDB_OUTPUT_ALL:
+ /* send an empty O packet */
+ gdb_output_con(connection, "");
+ break;
+ default:
+ break;
+ }
+}
+
+static const struct service_driver gdb_service_driver = {
+ .name = "gdb",
+ .new_connection_during_keep_alive_handler = NULL,
+ .new_connection_handler = gdb_new_connection,
+ .input_handler = gdb_input,
+ .connection_closed_handler = gdb_connection_closed,
+ .keep_client_alive_handler = gdb_keep_client_alive,
+};
+
static int gdb_target_start(struct target *target, const char *port)
{
struct gdb_service *gdb_service;
int ret;
gdb_service = malloc(sizeof(struct gdb_service));
- if (NULL == gdb_service)
+ if (!gdb_service)
return -ENOMEM;
LOG_INFO("starting gdb server for %s on %s", target_name(target), port);
gdb_service->core[1] = -1;
target->gdb_service = gdb_service;
- ret = add_service("gdb",
- port, target->gdb_max_connections, &gdb_new_connection, &gdb_input,
- &gdb_connection_closed, gdb_service);
+ ret = add_service(&gdb_service_driver, port, target->gdb_max_connections, gdb_service);
/* initialize 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;
+ foreach_smp_target(head, target->smp_targets) {
+ struct target *curr = head->target;
if (curr != target)
curr->gdb_service = gdb_service;
- head = head->next;
}
}
return ret;
int gdb_target_add_all(struct target *target)
{
- if (NULL == target) {
+ if (!target) {
LOG_WARNING("gdb services need one or more targets defined");
return ERROR_OK;
}
- while (NULL != target) {
+ while (target) {
int retval = gdb_target_add_one(target);
- if (ERROR_OK != retval)
+ if (retval != ERROR_OK)
return retval;
target = target->next;
if (CMD_ARGC != 0)
return ERROR_COMMAND_SYNTAX_ERROR;
- if (current_gdb_connection == NULL) {
+ if (!current_gdb_connection) {
command_print(CMD,
"gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
return ERROR_FAIL;
COMMAND_HANDLER(handle_gdb_port_command)
{
int retval = CALL_COMMAND_HANDLER(server_pipe_command, &gdb_port);
- if (ERROR_OK == retval) {
+ if (retval == ERROR_OK) {
free(gdb_port_next);
gdb_port_next = strdup(gdb_port);
}
size_t size_written;
char *tdesc_filename = alloc_printf("%s.xml", target_type_name(target));
- if (tdesc_filename == NULL) {
+ if (!tdesc_filename) {
retval = ERROR_FAIL;
goto out;
}
Code Review / openocd.git / blobdiff