#include <target/register.h>
#include <target/target.h>
#include <target/target_type.h>
+#include <target/semihosting_common.h>
#include "server.h"
#include <flash/nor/core.h>
#include "gdb_server.h"
/* private connection data for GDB */
struct gdb_connection {
- char buffer[GDB_BUFFER_SIZE];
+ char buffer[GDB_BUFFER_SIZE + 1]; /* Extra byte for null-termination */
char *buf_p;
int buf_cnt;
- int ctrl_c;
+ bool ctrl_c;
enum target_state frontend_state;
struct image *vflash_image;
bool closed;
* 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;
+ /* set when extended protocol is used */
+ bool extended_protocol;
/* temporarily used for target description support */
struct target_desc_format target_desc;
/* temporarily used for thread list support */
return 0x05; /* SIGTRAP */
case DBG_REASON_SINGLESTEP:
return 0x05; /* SIGTRAP */
+ case DBG_REASON_EXC_CATCH:
+ return 0x05;
case DBG_REASON_NOTHALTED:
return 0x0; /* no signal... shouldn't happen */
default:
gdb_con->buf_cnt--;
*next_char = *(gdb_con->buf_p++);
if (gdb_con->buf_cnt > 0)
- connection->input_pending = 1;
+ connection->input_pending = true;
else
- connection->input_pending = 0;
+ connection->input_pending = false;
#ifdef _DEBUG_GDB_IO_
LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
#endif
*next_char = **buf_p;
(*buf_p)++;
if (*buf_cnt > 0)
- connection->input_pending = 1;
+ connection->input_pending = true;
else
- connection->input_pending = 0;
+ connection->input_pending = false;
#ifdef _DEBUG_GDB_IO_
LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
log_remove_callback(gdb_log_callback, connection);
LOG_WARNING("negative reply, retrying");
} else if (reply == 0x3) {
- gdb_con->ctrl_c = 1;
+ gdb_con->ctrl_c = true;
retval = gdb_get_char(connection, &reply);
if (retval != ERROR_OK)
return retval;
LOG_WARNING("negative acknowledgment, but no packet pending");
break;
case 0x3:
- gdb_con->ctrl_c = 1;
+ gdb_con->ctrl_c = true;
*len = 0;
return ERROR_OK;
default:
static void gdb_signal_reply(struct target *target, struct connection *connection)
{
struct gdb_connection *gdb_connection = connection->priv;
- char sig_reply[45];
+ char sig_reply[65];
char stop_reason[20];
char current_thread[25];
int sig_reply_len;
if (target->debug_reason == DBG_REASON_EXIT) {
sig_reply_len = snprintf(sig_reply, sizeof(sig_reply), "W00");
} else {
+ struct target *ct;
+ if (target->rtos != NULL) {
+ target->rtos->current_threadid = target->rtos->current_thread;
+ target->rtos->gdb_target_for_threadid(connection, target->rtos->current_threadid, &ct);
+ } else {
+ ct = target;
+ }
+
if (gdb_connection->ctrl_c) {
signal_var = 0x2;
} else
- signal_var = gdb_last_signal(target);
+ signal_var = gdb_last_signal(ct);
stop_reason[0] = '\0';
- if (target->debug_reason == DBG_REASON_WATCHPOINT) {
+ if (ct->debug_reason == DBG_REASON_WATCHPOINT) {
enum watchpoint_rw hit_wp_type;
target_addr_t hit_wp_address;
- if (watchpoint_hit(target, &hit_wp_type, &hit_wp_address) == ERROR_OK) {
+ if (watchpoint_hit(ct, &hit_wp_type, &hit_wp_address) == ERROR_OK) {
switch (hit_wp_type) {
case WPT_WRITE:
}
current_thread[0] = '\0';
- if (target->rtos != NULL) {
- struct target *ct;
- snprintf(current_thread, sizeof(current_thread), "thread:%016" PRIx64 ";",
+ if (target->rtos != NULL)
+ snprintf(current_thread, sizeof(current_thread), "thread:%" 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);
- if (!gdb_connection->ctrl_c)
- signal_var = gdb_last_signal(ct);
- }
sig_reply_len = snprintf(sig_reply, sizeof(sig_reply), "T%2.2x%s%s",
signal_var, stop_reason, current_thread);
- gdb_connection->ctrl_c = 0;
+ gdb_connection->ctrl_c = false;
}
gdb_put_packet(connection, sig_reply, sig_reply_len);
if (strcmp(target->fileio_info->identifier, "open") == 0)
sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64 ",%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
target->fileio_info->param_1,
- target->fileio_info->param_2,
+ target->fileio_info->param_2 + 1, /* len + trailing zero */
target->fileio_info->param_3,
target->fileio_info->param_4);
else if (strcmp(target->fileio_info->identifier, "close") == 0)
else if (strcmp(target->fileio_info->identifier, "rename") == 0)
sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64 ",%" PRIx64 "/%" PRIx64, target->fileio_info->identifier,
target->fileio_info->param_1,
- target->fileio_info->param_2,
+ target->fileio_info->param_2 + 1, /* len + trailing zero */
target->fileio_info->param_3,
- target->fileio_info->param_4);
+ target->fileio_info->param_4 + 1); /* len + trailing zero */
else if (strcmp(target->fileio_info->identifier, "unlink") == 0)
sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64, target->fileio_info->identifier,
target->fileio_info->param_1,
- target->fileio_info->param_2);
+ target->fileio_info->param_2 + 1); /* len + trailing zero */
else if (strcmp(target->fileio_info->identifier, "stat") == 0)
sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64 ",%" PRIx64, target->fileio_info->identifier,
target->fileio_info->param_1,
else if (strcmp(target->fileio_info->identifier, "system") == 0)
sprintf(fileio_command, "F%s,%" PRIx64 "/%" PRIx64, target->fileio_info->identifier,
target->fileio_info->param_1,
- target->fileio_info->param_2);
+ target->fileio_info->param_2 + 1); /* len + trailing zero */
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. */
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;
case TARGET_EVENT_HALTED:
target_call_event_callbacks(target, TARGET_EVENT_GDB_END);
break;
- case TARGET_EVENT_GDB_FLASH_ERASE_START:
- retval = jtag_execute_queue();
- if (retval != ERROR_OK)
- return retval;
- break;
default:
break;
}
target = get_target_from_connection(connection);
connection->priv = gdb_connection;
+ connection->cmd_ctx->current_target = target;
/* initialize gdb connection information */
gdb_connection->buf_p = gdb_connection->buffer;
gdb_connection->buf_cnt = 0;
- gdb_connection->ctrl_c = 0;
+ gdb_connection->ctrl_c = false;
gdb_connection->frontend_state = TARGET_HALTED;
gdb_connection->vflash_image = NULL;
gdb_connection->closed = false;
gdb_connection->sync = false;
gdb_connection->mem_write_error = false;
gdb_connection->attached = true;
+ gdb_connection->extended_protocol = false;
gdb_connection->target_desc.tdesc = NULL;
gdb_connection->target_desc.tdesc_length = 0;
gdb_connection->thread_list = NULL;
breakpoint_clear_target(target);
watchpoint_clear_target(target);
- if (target->rtos) {
- /* clean previous rtos session if supported*/
- if (target->rtos->type->clean)
- target->rtos->type->clean(target);
-
- /* update threads */
- rtos_update_threads(target);
- }
-
/* remove the initial ACK from the incoming buffer */
retval = gdb_get_char(connection, &initial_ack);
if (retval != ERROR_OK)
gdb_putback_char(connection, initial_ack);
target_call_event_callbacks(target, TARGET_EVENT_GDB_ATTACH);
+ if (target->rtos) {
+ /* clean previous rtos session if supported*/
+ if (target->rtos->type->clean)
+ target->rtos->type->clean(target);
+
+ /* update threads */
+ rtos_update_threads(target);
+ }
+
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++) {
+ for (unsigned int i = 0; i < flash_get_bank_count(); i++) {
struct flash_bank *p;
p = get_flash_bank_by_num_noprobe(i);
if (p->target != target)
continue;
retval = get_flash_bank_by_num(i, &p);
if (retval != ERROR_OK) {
- LOG_ERROR("Connect failed. Consider setting up a gdb-attach event for the target " \
+ 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;
}
target_name(target),
target_state_name(target));
+ if (!target_was_examined(target)) {
+ LOG_ERROR("Target %s not examined yet, refuse gdb connection %d!",
+ target_name(target), gdb_actual_connections);
+ gdb_actual_connections--;
+ return ERROR_TARGET_NOT_EXAMINED;
+ }
+
+ if (target->state != TARGET_HALTED)
+ LOG_WARNING("GDB connection %d on target %s not halted",
+ gdb_actual_connections, target_name(target));
+
/* DANGER! If we fail subsequently, we must remove this handler,
* otherwise we occasionally see crashes as the timer can invoke the
* callback fn.
/* if this connection registered a debug-message receiver delete it */
delete_debug_msg_receiver(connection->cmd_ctx, target);
- if (connection->priv) {
- free(connection->priv);
- connection->priv = NULL;
- } else
- LOG_ERROR("BUG: connection->priv == NULL");
+ free(connection->priv);
+ connection->priv = NULL;
target_unregister_event_callback(gdb_target_callback_event_handler, connection);
if (retval != ERROR_OK)
return gdb_error(connection, retval);
- for (i = 0; i < reg_list_size; i++)
+ for (i = 0; i < reg_list_size; i++) {
+ if (reg_list[i] == NULL || 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_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)
+ continue;
if (!reg_list[i]->valid) {
retval = reg_list[i]->type->get(reg_list[i]);
if (retval != ERROR_OK && gdb_report_register_access_error) {
LOG_DEBUG("-");
#endif
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
+ if ((target->rtos != NULL) && (ERROR_OK == rtos_get_gdb_reg(connection, reg_num)))
+ return ERROR_OK;
+
+ retval = target_get_gdb_reg_list_noread(target, ®_list, ®_list_size,
REG_CLASS_ALL);
if (retval != ERROR_OK)
return gdb_error(connection, retval);
}
}
- reg_packet = malloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2 + 1); /* plus one for string termination null */
+ reg_packet = calloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2 + 1, 1); /* plus one for string termination null */
gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
{
struct target *target = get_target_from_connection(connection);
char *separator;
- uint8_t *bin_buf;
int reg_num = strtoul(packet + 1, &separator, 16);
struct reg **reg_list;
int reg_list_size;
int retval;
+#ifdef _DEBUG_GDB_IO_
LOG_DEBUG("-");
+#endif
- retval = target_get_gdb_reg_list(target, ®_list, ®_list_size,
+ if (*separator != '=') {
+ LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
+ size_t chars = strlen(separator + 1);
+ 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))) {
+ free(bin_buf);
+ gdb_put_packet(connection, "OK", 2);
+ return ERROR_OK;
+ }
+
+ retval = target_get_gdb_reg_list_noread(target, ®_list, ®_list_size,
REG_CLASS_ALL);
- if (retval != ERROR_OK)
+ if (retval != ERROR_OK) {
+ free(bin_buf);
return gdb_error(connection, retval);
+ }
if (reg_list_size <= reg_num) {
LOG_ERROR("gdb requested a non-existing register");
+ free(bin_buf);
+ free(reg_list);
return ERROR_SERVER_REMOTE_CLOSED;
}
- if (*separator != '=') {
- LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- /* convert from GDB-string (target-endian) to hex-string (big-endian) */
- bin_buf = malloc(DIV_ROUND_UP(reg_list[reg_num]->size, 8));
- int chars = (DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2);
-
- if ((unsigned int)chars != strlen(separator + 1)) {
- LOG_ERROR("gdb sent a packet with wrong register size");
+ if (chars != (DIV_ROUND_UP(reg_list[reg_num]->size, 8) * 2)) {
+ LOG_ERROR("gdb sent %zu bits for a %" PRIu32 "-bit register (%s)",
+ chars * 4, reg_list[reg_num]->size, reg_list[reg_num]->name);
free(bin_buf);
+ free(reg_list);
return ERROR_SERVER_REMOTE_CLOSED;
}
/* We don't have to worry about the default 2 second timeout for GDB packets,
* because GDB breaks up large memory reads into smaller reads.
- *
- * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
*/
static int gdb_read_memory_packet(struct connection *connection,
char const *packet, int packet_size)
if (!len) {
LOG_WARNING("invalid read memory packet received (len == 0)");
- gdb_put_packet(connection, NULL, 0);
+ gdb_put_packet(connection, "", 0);
return ERROR_OK;
}
char *separator;
int retval;
- LOG_DEBUG("-");
+ LOG_DEBUG("[%s]", target_name(target));
type = strtoul(packet + 1, &separator, 16);
/* 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, ...)
+static __attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 5, 6))) void xml_printf(int *retval,
+ char **xml, int *pos, int *size, const char *fmt, ...)
{
if (*retval != ERROR_OK)
return;
char *t = *xml;
*xml = realloc(*xml, *size);
if (*xml == NULL) {
- if (t)
- free(t);
+ free(t);
*retval = ERROR_SERVER_REMOTE_CLOSED;
return;
}
int length;
char *separator;
target_addr_t ram_start = 0;
- int i;
- int target_flash_banks = 0;
+ unsigned int target_flash_banks = 0;
/* skip command character */
packet += 23;
*/
banks = malloc(sizeof(struct flash_bank *)*flash_get_bank_count());
- for (i = 0; i < flash_get_bank_count(); i++) {
+ for (unsigned int i = 0; i < flash_get_bank_count(); i++) {
p = get_flash_bank_by_num_noprobe(i);
if (p->target != target)
continue;
qsort(banks, target_flash_banks, sizeof(struct flash_bank *),
compare_bank);
- for (i = 0; i < target_flash_banks; i++) {
- int j;
+ for (unsigned int i = 0; i < target_flash_banks; i++) {
unsigned sector_size = 0;
unsigned group_len = 0;
if (ram_start < p->base)
xml_printf(&retval, &xml, &pos, &size,
"<memory type=\"ram\" start=\"" TARGET_ADDR_FMT "\" "
- "length=\"0x%x\"/>\n",
+ "length=\"" TARGET_ADDR_FMT "\"/>\n",
ram_start, p->base - ram_start);
/* Report adjacent groups of same-size sectors. So for
* 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++) {
+ for (unsigned int j = 0; j < p->num_sectors; j++) {
/* Maybe start a new group of sectors. */
if (sector_size == 0) {
if (ram_start != 0)
xml_printf(&retval, &xml, &pos, &size,
"<memory type=\"ram\" start=\"" TARGET_ADDR_FMT "\" "
- "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
- */
+ "length=\"" TARGET_ADDR_FMT "\"/>\n",
+ ram_start, target_address_max(target) - ram_start + 1);
+ /* ELSE a flash chip could be at the very end of the address space, in
+ * which case ram_start will be precisely 0 */
free(banks);
static int gdb_generate_reg_type_description(struct target *target,
char **tdesc, int *pos, int *size, struct reg_data_type *type,
- char const **arch_defined_types_list[], int * num_arch_defined_types)
+ char const **arch_defined_types_list[], int *num_arch_defined_types)
{
int retval = ERROR_OK;
}
/* <vector id="id" type="type" count="count"/> */
xml_printf(&retval, tdesc, pos, size,
- "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>\n",
+ "<vector id=\"%s\" type=\"%s\" count=\"%" PRIu32 "\"/>\n",
type->id, type->reg_type_vector->type->id,
type->reg_type_vector->count);
* <field name="name" start="start" end="end"/> ...
* </struct> */
xml_printf(&retval, tdesc, pos, size,
- "<struct id=\"%s\" size=\"%d\">\n",
+ "<struct id=\"%s\" size=\"%" PRIu32 "\">\n",
type->id, type->reg_type_struct->size);
while (field != NULL) {
xml_printf(&retval, tdesc, pos, size,
- "<field name=\"%s\" start=\"%d\" end=\"%d\" type=\"%s\" />\n",
+ "<field name=\"%s\" start=\"%" PRIu32 "\" end=\"%" PRIu32 "\" type=\"%s\" />\n",
field->name, field->bitfield->start, field->bitfield->end,
gdb_get_reg_type_name(field->bitfield->type));
* <field name="name" start="start" end="end"/> ...
* </flags> */
xml_printf(&retval, tdesc, pos, size,
- "<flags id=\"%s\" size=\"%d\">\n",
+ "<flags id=\"%s\" size=\"%" PRIu32 "\">\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\" type=\"%s\" />\n",
+ "<field name=\"%s\" start=\"%" PRIu32 "\" end=\"%" PRIu32 "\" type=\"%s\" />\n",
field->name, field->bitfield->start, field->bitfield->end,
gdb_get_reg_type_name(field->bitfield->type));
*feature_list = calloc(1, sizeof(char *));
for (int i = 0; i < reg_list_size; i++) {
- if (reg_list[i]->exist == false)
+ if (reg_list[i]->exist == false || reg_list[i]->hidden)
continue;
if (reg_list[i]->feature != NULL
int retval = ERROR_OK;
struct reg **reg_list = NULL;
int reg_list_size;
+ char const *architecture;
char const **features = NULL;
- char const **arch_defined_types = NULL;
int feature_list_size = 0;
- int num_arch_defined_types = 0;
char *tdesc = NULL;
int pos = 0;
int size = 0;
- arch_defined_types = calloc(1, sizeof(char *));
- retval = target_get_gdb_reg_list(target, ®_list,
+ retval = target_get_gdb_reg_list_noread(target, ®_list,
®_list_size, REG_CLASS_ALL);
if (retval != ERROR_OK) {
"<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n"
"<target version=\"1.0\">\n");
+ /* generate architecture element if supported by target */
+ architecture = target_get_gdb_arch(target);
+ if (architecture != NULL)
+ xml_printf(&retval, &tdesc, &pos, &size,
+ "<architecture>%s</architecture>\n", architecture);
+
/* generate target description according to register list */
if (features != NULL) {
while (features[current_feature]) {
+ char const **arch_defined_types = NULL;
+ int num_arch_defined_types = 0;
+ arch_defined_types = calloc(1, sizeof(char *));
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)
+ if (reg_list[i]->exist == false || reg_list[i]->hidden)
continue;
if (strcmp(reg_list[i]->feature->name, features[current_feature]))
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);
+ " bitsize=\"%" PRIu32 "\"", reg_list[i]->size);
xml_printf(&retval, &tdesc, &pos, &size,
- " regnum=\"%d\"", reg_list[i]->number);
+ " regnum=\"%" PRIu32 "\"", reg_list[i]->number);
if (reg_list[i]->caller_save)
xml_printf(&retval, &tdesc, &pos, &size,
" save-restore=\"yes\"");
"</feature>\n");
current_feature++;
+ free(arch_defined_types);
}
}
error:
free(features);
free(reg_list);
- free(arch_defined_types);
if (retval == ERROR_OK)
*tdesc_out = tdesc;
char const **features = NULL;
int feature_list_size = 0;
- retval = target_get_gdb_reg_list(target, ®_list,
+ char const *architecture = target_get_gdb_arch(target);
+
+ retval = target_get_gdb_reg_list_noread(target, ®_list,
®_list_size, REG_CLASS_ALL);
if (retval != ERROR_OK) {
LOG_ERROR("get register list failed");
}
if (supported) {
- if (feature_list_size)
+ if (architecture || feature_list_size)
*supported = 1;
else
*supported = 0;
xml_printf(&retval, &thread_list, &pos, &size,
", ");
xml_printf(&retval, &thread_list, &pos, &size,
- thread_detail->extra_info_str);
+ "%s", thread_detail->extra_info_str);
}
xml_printf(&retval, &thread_list, &pos, &size,
transfer_type = 'l';
*chunk = malloc(length + 2 + 3);
- /* Allocating extra 3 bytes prevents false positive valgrind report
+ /* Allocating extra 3 bytes prevents false positive valgrind report
* of strlen(chunk) word access:
* Invalid read of size 4
* Address 0x4479934 is 44 bytes inside a block of size 45 alloc'd */
&pos,
&size,
"PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;qXfer:threads:read+;QStartNoAckMode+;vContSupported+",
- (GDB_BUFFER_SIZE - 1),
+ GDB_BUFFER_SIZE,
((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
(gdb_target_desc_supported == 1) ? '+' : '-');
if (parse[0] == 'c') {
parse += 1;
- packet_size -= 1;
/* check if thread-id follows */
if (parse[0] == ':') {
int64_t tid;
parse += 1;
- packet_size -= 1;
tid = strtoll(parse, &endp, 16);
if (tid == thread_id) {
if (gdb_connection->sync) {
gdb_connection->sync = false;
if (ct->state == TARGET_HALTED) {
- LOG_WARNING("stepi ignored. GDB will now fetch the register state " \
+ 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);
return false;
}
+static char *next_hex_encoded_field(const char **str, char sep)
+{
+ size_t hexlen;
+ const char *hex = *str;
+ if (hex[0] == '\0')
+ return NULL;
+
+ const char *end = strchr(hex, sep);
+ if (end == NULL)
+ hexlen = strlen(hex);
+ else
+ hexlen = end - hex;
+ *str = hex + hexlen + 1;
+
+ if (hexlen % 2 != 0) {
+ /* Malformed hex data */
+ return NULL;
+ }
+
+ size_t count = hexlen / 2;
+ char *decoded = malloc(count + 1);
+ if (decoded == NULL)
+ return NULL;
+
+ size_t converted = unhexify((void *)decoded, hex, count);
+ if (converted != count) {
+ free(decoded);
+ return NULL;
+ }
+
+ decoded[count] = '\0';
+ return decoded;
+}
+
+/* handle extended restart packet */
+static void gdb_restart_inferior(struct connection *connection, const char *packet, int packet_size)
+{
+ struct gdb_connection *gdb_con = connection->priv;
+ struct target *target = get_target_from_connection(connection);
+
+ 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 */
+ gdb_con->attached = true;
+ /* info rtos parts */
+ gdb_thread_packet(connection, packet, packet_size);
+}
+
+static bool gdb_handle_vrun_packet(struct connection *connection, const char *packet, int packet_size)
+{
+ struct target *target = get_target_from_connection(connection);
+ const char *parse = packet;
+
+ /* Skip "vRun" */
+ parse += 4;
+
+ if (parse[0] != ';')
+ return false;
+ parse++;
+
+ /* Skip first field "filename"; don't know what to do with it. */
+ 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) {
+ char *new_cmdline = alloc_printf("%s %s", cmdline, arg);
+ free(cmdline);
+ free(arg);
+ cmdline = new_cmdline;
+ }
+
+ if (cmdline != NULL) {
+ if (target->semihosting != NULL) {
+ LOG_INFO("GDB set inferior command line to '%s'", cmdline);
+ free(target->semihosting->cmdline);
+ target->semihosting->cmdline = cmdline;
+ } else {
+ LOG_INFO("GDB set inferior command line to '%s' but semihosting is unavailable", cmdline);
+ free(cmdline);
+ }
+ }
+
+ gdb_restart_inferior(connection, packet, packet_size);
+ gdb_put_packet(connection, "S00", 3);
+ return true;
+}
+
static int gdb_v_packet(struct connection *connection,
char const *packet, int packet_size)
{
struct gdb_connection *gdb_connection = connection->priv;
- struct target *target;
int result;
- target = get_target_from_connection(connection);
+ struct target *target = get_target_from_connection(connection);
if (strncmp(packet, "vCont", 5) == 0) {
bool handled;
return ERROR_OK;
}
+ if (strncmp(packet, "vRun", 4) == 0) {
+ bool handled;
+
+ handled = gdb_handle_vrun_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) {
target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_WRITE_START);
result = flash_write(target, gdb_connection->vflash_image,
- &written, 0);
+ &written, false);
target_call_event_callbacks(target,
TARGET_EVENT_GDB_FLASH_WRITE_END);
if (result != ERROR_OK) {
static int gdb_detach(struct connection *connection)
{
- target_call_event_callbacks(get_target_from_connection(connection),
- TARGET_EVENT_GDB_DETACH);
-
+ /*
+ * Only reply "OK" to GDB
+ * it will close the connection and this will trigger a call to
+ * gdb_connection_closed() that will in turn trigger the event
+ * TARGET_EVENT_GDB_DETACH
+ */
return gdb_put_packet(connection, "OK", 2);
}
static int gdb_input_inner(struct connection *connection)
{
/* Do not allocate this on the stack */
- static char gdb_packet_buffer[GDB_BUFFER_SIZE];
+ static char gdb_packet_buffer[GDB_BUFFER_SIZE + 1]; /* Extra byte for null-termination */
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;
+ static bool warn_use_ext;
target = get_target_from_connection(connection);
* drain the rest of the buffer.
*/
do {
- packet_size = GDB_BUFFER_SIZE-1;
+ packet_size = GDB_BUFFER_SIZE;
retval = gdb_get_packet(connection, gdb_packet_buffer, &packet_size);
if (retval != ERROR_OK)
return retval;
break;
case '?':
gdb_last_signal_packet(connection, packet, packet_size);
+ /* '?' is sent after the eventual '!' */
+ if (!warn_use_ext && !gdb_con->extended_protocol) {
+ warn_use_ext = true;
+ LOG_WARNING("Prefer GDB command \"target extended-remote %s\" instead of \"target remote %s\"",
+ connection->service->port, connection->service->port);
+ }
break;
case 'c':
case 's':
"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, " \
+ 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) {
* make only the single stepping have the sync feature...
*/
nostep = true;
- LOG_WARNING("stepi ignored. GDB will now fetch the register state " \
+ LOG_DEBUG("stepi ignored. GDB will now fetch the register state "
"from the target.");
}
gdb_con->sync = false;
break;
case 'D':
retval = gdb_detach(connection);
- extended_protocol = 0;
break;
case 'X':
retval = gdb_write_memory_binary_packet(connection, packet, packet_size);
return retval;
break;
case 'k':
- if (extended_protocol != 0) {
+ if (gdb_con->extended_protocol) {
gdb_con->attached = false;
break;
}
return ERROR_SERVER_REMOTE_CLOSED;
case '!':
/* handle extended remote protocol */
- extended_protocol = 1;
+ gdb_con->extended_protocol = true;
gdb_put_packet(connection, "OK", 2);
break;
case 'R':
/* handle extended restart packet */
- 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 */
- gdb_con->attached = true;
- /* info rtos parts */
- gdb_thread_packet(connection, packet, packet_size);
+ gdb_restart_inferior(connection, packet, packet_size);
break;
case 'j':
default:
/* ignore unknown packets */
LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
- gdb_put_packet(connection, NULL, 0);
+ gdb_put_packet(connection, "", 0);
break;
}
retval = target_poll(t);
if (retval != ERROR_OK)
target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
- gdb_con->ctrl_c = 0;
+ gdb_con->ctrl_c = false;
} else {
LOG_INFO("The target is not running when halt was requested, stopping GDB.");
target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
if (NULL == gdb_service)
return -ENOMEM;
+ LOG_INFO("starting gdb server for %s on %s", target_name(target), port);
+
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 */
+ port, target->gdb_max_connections, &gdb_new_connection, &gdb_input,
+ &gdb_connection_closed, gdb_service, NULL);
+ /* initialize all targets gdb service with the same pointer */
{
struct target_list *head;
struct target *curr;
static int gdb_target_add_one(struct target *target)
{
+ /* one gdb instance per smp list */
+ if ((target->smp) && (target->gdb_service))
+ return ERROR_OK;
+
+ /* skip targets that cannot handle a gdb connections (e.g. mem_ap) */
+ if (!target_supports_gdb_connection(target)) {
+ LOG_DEBUG("skip gdb server for target %s", target_name(target));
+ return ERROR_OK;
+ }
+
+ if (target->gdb_port_override) {
+ if (strcmp(target->gdb_port_override, "disabled") == 0) {
+ LOG_INFO("gdb port disabled");
+ return ERROR_OK;
+ }
+ return gdb_target_start(target, target->gdb_port_override);
+ }
+
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;
int retval = gdb_target_start(target, gdb_port_next);
if (retval == ERROR_OK) {
+ /* save the port number so can be queried with
+ * $target_name cget -gdb-port
+ */
+ target->gdb_port_override = strdup(gdb_port_next);
+
long portnumber;
/* If we can parse the port number
* then we increment the port number for the next target.
if (parse_long(gdb_port_next, &portnumber) == ERROR_OK) {
free(gdb_port_next);
if (portnumber) {
- gdb_port_next = alloc_printf("%d", portnumber+1);
+ gdb_port_next = alloc_printf("%ld", portnumber+1);
} else {
/* Don't increment if gdb_port is 0, since we're just
* trying to allocate an unused port. */
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;
return ERROR_COMMAND_SYNTAX_ERROR;
if (current_gdb_connection == NULL) {
- command_print(CMD_CTX,
+ command_print(CMD,
"gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
return ERROR_FAIL;
}
{
.name = "gdb_port",
.handler = handle_gdb_port_command,
- .mode = COMMAND_ANY,
+ .mode = COMMAND_CONFIG,
.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. "
.handler = handle_gdb_save_tdesc_command,
.mode = COMMAND_EXEC,
.help = "Save the target description file",
+ .usage = "",
},
COMMAND_REGISTRATION_DONE
};
projects / fw / openocd / blobdiff