return ERROR_OK;
}
+void gdb_send_error(connection_t *connection, u8 the_error)
+{
+ char err[4];
+ snprintf(err, 4, "E%2.2X", the_error );
+ gdb_put_packet(connection, err, 3);
+}
+
int gdb_last_signal_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
{
char sig_reply[4];
return ERROR_OK;
}
-void gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
+void gdb_str_to_target(target_t *target, char *str, char *tstr)
+{
+ int str_len = strlen(str);
+ int i;
+
+ if (str_len % 2)
+ {
+ ERROR("BUG: gdb value with uneven number of characters encountered");
+ exit(-1);
+ }
+
+ if (target->endianness == TARGET_LITTLE_ENDIAN)
+ {
+ for (i = 0; i < str_len; i+=2)
+ {
+ tstr[str_len - i - 1] = str[i + 1];
+ tstr[str_len - i - 2] = str[i];
+ }
+ }
+ else
+ {
+ for (i = 0; i < str_len; i++)
+ {
+ tstr[i] = str[i];
+ }
+ }
+}
+
+void gdb_target_to_str(target_t *target, char *tstr, char *str)
+{
+ int str_len = strlen(tstr);
+ int i;
+
+ if (str_len % 2)
+ {
+ ERROR("BUG: gdb value with uneven number of characters encountered");
+ exit(-1);
+ }
+
+ if (target->endianness == TARGET_LITTLE_ENDIAN)
+ {
+ for (i = 0; i < str_len; i+=2)
+ {
+ str[str_len - i - 1] = tstr[i + 1];
+ str[str_len - i - 2] = tstr[i];
+ }
+ }
+ else
+ {
+ for (i = 0; i < str_len; i++)
+ {
+ str[i] = tstr[i];
+ }
+ }
+}
+
+int gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
{
reg_t **reg_list;
int reg_list_size;
switch (retval)
{
case ERROR_TARGET_NOT_HALTED:
- ERROR("gdb requested registers, but we're not halted");
- exit(-1);
+ ERROR("gdb requested registers but we're not halted, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
default:
+ /* this is a bug condition - get_gdb_reg_list() may not return any other error */
ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
exit(-1);
}
for (i = 0; i < reg_list_size; i++)
{
- int j;
- char *hex_buf = buf_to_char(reg_list[i]->value, reg_list[i]->size);
+ char *hex_buf = buf_to_str(reg_list[i]->value, reg_list[i]->size, 16);
DEBUG("hex_buf: %s", hex_buf);
- for (j = CEIL(reg_list[i]->size, 8) * 2; j > 0; j -= 2)
- {
- *reg_packet_p++ = hex_buf[j - 2];
- *reg_packet_p++ = hex_buf[j - 1];
- }
+ gdb_str_to_target(target, hex_buf, reg_packet_p);
+ reg_packet_p += CEIL(reg_list[i]->size, 8) * 2;
free(hex_buf);
}
gdb_put_packet(connection, reg_packet, CEIL(reg_packet_size, 8) * 2);
free(reg_packet);
+ free(reg_list);
+
+ return ERROR_OK;
}
-void gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
int i;
reg_t **reg_list;
if (packet_size % 2)
{
- WARNING("GDB set_registers packet with uneven characters received");
- return;
+ WARNING("GDB set_registers packet with uneven characters received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
}
if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
switch (retval)
{
case ERROR_TARGET_NOT_HALTED:
- ERROR("gdb requested registers, but we're not halted");
- exit(-1);
+ ERROR("gdb tried to registers but we're not halted, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
default:
+ /* this is a bug condition - get_gdb_reg_list() may not return any other error */
ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
exit(-1);
}
packet_p = packet;
for (i = 0; i < reg_list_size; i++)
{
- char_to_buf(packet, CEIL(reg_list[i]->size, 8) * 2, reg_list[i]->value, reg_list[i]->size);
- reg_list[i]->dirty = 1;
+ u8 *bin_buf;
+ char *hex_buf;
+ reg_arch_type_t *arch_type;
+
+ /* convert from GDB-string (target-endian) to hex-string (big-endian) */
+ hex_buf = malloc(CEIL(reg_list[i]->size, 8) * 2);
+ gdb_target_to_str(target, packet_p, hex_buf);
+
+ /* convert hex-string to binary buffer */
+ bin_buf = malloc(CEIL(reg_list[i]->size, 8));
+ str_to_buf(hex_buf, CEIL(reg_list[i]->size, 8) * 2, bin_buf, reg_list[i]->size, 16);
+
+ /* get register arch_type, and call set method */
+ arch_type = register_get_arch_type(reg_list[i]->arch_type);
+ if (arch_type == NULL)
+ {
+ ERROR("BUG: encountered unregistered arch type");
+ exit(-1);
+ }
+ arch_type->set(reg_list[i], bin_buf);
+
+ /* advance packet pointer */
+ packet_p += (CEIL(reg_list[i]->size, 8) * 2);
+
+ free(bin_buf);
+ free(hex_buf);
}
+
+ /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
+ free(reg_list);
gdb_put_packet(connection, "OK", 2);
+
+ return ERROR_OK;
}
-void gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
- char *hex_buf;
char *reg_packet;
- char *reg_packet_p;
int reg_num = strtoul(packet + 1, NULL, 16);
reg_t **reg_list;
int reg_list_size;
int retval;
- int i;
+ char *hex_buf;
DEBUG("");
switch (retval)
{
case ERROR_TARGET_NOT_HALTED:
- ERROR("gdb requested registers, but we're not halted");
- exit(-1);
+ ERROR("gdb requested registers but we're not halted, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
default:
+ /* this is a bug condition - get_gdb_reg_list() may not return any other error */
ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
exit(-1);
}
exit(-1);
}
- hex_buf = buf_to_char(reg_list[reg_num]->value, reg_list[reg_num]->size);
- reg_packet = reg_packet_p = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
+ reg_packet = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
+
+ hex_buf = buf_to_str(reg_list[reg_num]->value, reg_list[reg_num]->size, 16);
- for (i = CEIL(reg_list[reg_num]->size, 8) * 2; i > 0; i -= 2)
- {
- *reg_packet_p++ = hex_buf[i - 2];
- *reg_packet_p++ = hex_buf[i - 1];
- }
+ gdb_str_to_target(target, reg_packet, hex_buf);
gdb_put_packet(connection, reg_packet, CEIL(reg_list[reg_num]->size, 8) * 2);
+ free(reg_list);
free(reg_packet);
free(hex_buf);
+ return ERROR_OK;
}
-void gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
char *separator;
+ char *hex_buf;
+ u8 *bin_buf;
int reg_num = strtoul(packet + 1, &separator, 16);
reg_t **reg_list;
int reg_list_size;
int retval;
-
+ reg_arch_type_t *arch_type;
+
DEBUG("");
if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
switch (retval)
{
case ERROR_TARGET_NOT_HALTED:
- ERROR("gdb requested registers, but we're not halted");
- exit(-1);
+ ERROR("gdb tried to set a register but we're not halted, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
default:
+ /* this is a bug condition - get_gdb_reg_list() may not return any other error */
ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
exit(-1);
}
if (reg_list_size < reg_num)
{
ERROR("gdb requested a non-existing register");
- exit(-1);
+ return ERROR_SERVER_REMOTE_CLOSED;
}
if (*separator != '=')
{
- ERROR("GDB set register packet, but no '=' following the register number");
- exit(-1);
+ ERROR("GDB 'set register packet', but no '=' following the register number");
+ return ERROR_SERVER_REMOTE_CLOSED;
}
- char_to_buf(separator + 1, CEIL(reg_list[reg_num]->size, 8) * 2, reg_list[reg_num]->value, reg_list[reg_num]->size);
- reg_list[reg_num]->dirty = 1;
+ /* convert from GDB-string (target-endian) to hex-string (big-endian) */
+ hex_buf = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
+ gdb_target_to_str(target, separator + 1, hex_buf);
+
+ /* convert hex-string to binary buffer */
+ bin_buf = malloc(CEIL(reg_list[reg_num]->size, 8));
+ str_to_buf(hex_buf, CEIL(reg_list[reg_num]->size, 8) * 2, bin_buf, reg_list[reg_num]->size, 16);
+
+ /* get register arch_type, and call set method */
+ arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
+ if (arch_type == NULL)
+ {
+ ERROR("BUG: encountered unregistered arch type");
+ exit(-1);
+ }
+ arch_type->set(reg_list[reg_num], bin_buf);
gdb_put_packet(connection, "OK", 2);
+ free(bin_buf);
+ free(hex_buf);
+ free(reg_list);
+
+ return ERROR_OK;
}
-void gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_memory_packet_error(connection_t *connection, int retval)
+{
+ switch (retval)
+ {
+ case ERROR_TARGET_NOT_HALTED:
+ ERROR("gdb tried to read memory but we're not halted, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ break;
+ case ERROR_TARGET_DATA_ABORT:
+ gdb_send_error(connection, EIO);
+ break;
+ case ERROR_TARGET_TRANSLATION_FAULT:
+ gdb_send_error(connection, EFAULT);
+ break;
+ case ERROR_TARGET_UNALIGNED_ACCESS:
+ gdb_send_error(connection, EFAULT);
+ break;
+ default:
+ ERROR("BUG: unexpected error %i", retval);
+ exit(-1);
+ }
+
+ return ERROR_OK;
+}
+
+int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
char *separator;
u32 addr = 0;
char *hex_buffer;
int i;
+ int retval;
/* skip command character */
packet++;
addr = strtoul(packet, &separator, 16);
if (*separator != ',')
- return;
+ {
+ ERROR("incomplete read memory packet received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
len = strtoul(separator+1, NULL, 16);
{
case 4:
if ((addr % 4) == 0)
- target->type->read_memory(target, addr, 4, 1, buffer);
+ retval = target->type->read_memory(target, addr, 4, 1, buffer);
else
- target->type->read_memory(target, addr, 1, len, buffer);
+ retval = target->type->read_memory(target, addr, 1, len, buffer);
break;
case 2:
if ((addr % 2) == 0)
- target->type->read_memory(target, addr, 2, 1, buffer);
+ retval = target->type->read_memory(target, addr, 2, 1, buffer);
else
- target->type->read_memory(target, addr, 1, len, buffer);
+ retval = target->type->read_memory(target, addr, 1, len, buffer);
break;
default:
if (((addr % 4) == 0) && ((len % 4) == 0))
- target->type->read_memory(target, addr, 4, len / 4, buffer);
+ retval = target->type->read_memory(target, addr, 4, len / 4, buffer);
else
- target->type->read_memory(target, addr, 1, len, buffer);
+ retval = target->type->read_memory(target, addr, 1, len, buffer);
}
- hex_buffer = malloc(len * 2 + 1);
+ if (retval == ERROR_OK)
+ {
+ hex_buffer = malloc(len * 2 + 1);
+
+ for (i=0; i<len; i++)
+ snprintf(hex_buffer + 2*i, 3, "%2.2x", buffer[i]);
- for (i=0; i<len; i++)
- snprintf(hex_buffer + 2*i, 3, "%2.2x", buffer[i]);
-
- gdb_put_packet(connection, hex_buffer, len * 2);
+ gdb_put_packet(connection, hex_buffer, len * 2);
- free(hex_buffer);
+ free(hex_buffer);
+ }
+ else
+ {
+ if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
+ return retval;
+ }
+
free(buffer);
+
+ return ERROR_OK;
}
-void gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
char *separator;
u32 addr = 0;
u8 *buffer;
int i;
+ int retval;
/* skip command character */
packet++;
addr = strtoul(packet, &separator, 16);
if (*separator != ',')
- return;
+ {
+ ERROR("incomplete write memory packet received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
len = strtoul(separator+1, &separator, 16);
if (*(separator++) != ':')
- return;
+ {
+ ERROR("incomplete write memory packet received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
buffer = malloc(len);
/* handle sized writes */
case 4:
if ((addr % 4) == 0)
- target->type->write_memory(target, addr, 4, 1, buffer);
+ retval = target->type->write_memory(target, addr, 4, 1, buffer);
else
- target->type->write_memory(target, addr, 1, len, buffer);
+ retval = target->type->write_memory(target, addr, 1, len, buffer);
break;
case 2:
if ((addr % 2) == 0)
- target->type->write_memory(target, addr, 2, 1, buffer);
+ retval = target->type->write_memory(target, addr, 2, 1, buffer);
else
- target->type->write_memory(target, addr, 1, len, buffer);
+ retval = target->type->write_memory(target, addr, 1, len, buffer);
break;
case 3:
case 1:
- target->type->write_memory(target, addr, 1, len, buffer);
+ retval = target->type->write_memory(target, addr, 1, len, buffer);
break;
/* handle bulk writes */
default:
- target_write_buffer(target, addr, len, buffer);
+ retval = target_write_buffer(target, addr, len, buffer);
break;
}
- gdb_put_packet(connection, "OK", 2);
+ if (retval == ERROR_OK)
+ {
+ gdb_put_packet(connection, "OK", 2);
+ }
+ else
+ {
+ if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
+ return retval;
+ }
free(buffer);
+
+ return ERROR_OK;
}
-void gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
char *separator;
u32 addr = 0;
u32 len = 0;
u8 *buffer;
+ int retval;
/* skip command character */
packet++;
addr = strtoul(packet, &separator, 16);
if (*separator != ',')
- return;
+ {
+ ERROR("incomplete write memory binary packet received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
len = strtoul(separator+1, &separator, 16);
if (*(separator++) != ':')
- return;
+ {
+ ERROR("incomplete write memory binary packet received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
if( len ) {
{
case 4:
if ((addr % 4) == 0)
- target->type->write_memory(target, addr, 4, 1, buffer);
+ retval = target->type->write_memory(target, addr, 4, 1, buffer);
else
- target->type->write_memory(target, addr, 1, len, buffer);
+ retval = target->type->write_memory(target, addr, 1, len, buffer);
break;
case 2:
if ((addr % 2) == 0)
- target->type->write_memory(target, addr, 2, 1, buffer);
+ retval = target->type->write_memory(target, addr, 2, 1, buffer);
else
- target->type->write_memory(target, addr, 1, len, buffer);
+ retval = target->type->write_memory(target, addr, 1, len, buffer);
break;
case 3:
case 1:
- target->type->write_memory(target, addr, 1, len, buffer);
+ retval = target->type->write_memory(target, addr, 1, len, buffer);
break;
default:
- target_write_buffer(target, addr, len, buffer);
+ retval = target_write_buffer(target, addr, len, buffer);
break;
}
free(buffer);
}
- gdb_put_packet(connection, "OK", 2);
+ if (retval == ERROR_OK)
+ {
+ gdb_put_packet(connection, "OK", 2);
+ }
+ else
+ {
+ if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
+ return retval;
+ }
+
+ return ERROR_OK;
}
void gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
if (packet_size > 1)
{
- u32 address = 0;
packet[packet_size] = 0;
address = strtoul(packet + 1, NULL, 16);
}
}
}
-void gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_bp_wp_packet_error(connection_t *connection, int retval)
+{
+ switch (retval)
+ {
+ case ERROR_TARGET_NOT_HALTED:
+ ERROR("gdb tried to set a breakpoint but we're not halted, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ break;
+ case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
+ gdb_send_error(connection, EBUSY);
+ break;
+ default:
+ ERROR("BUG: unexpected error %i", retval);
+ exit(-1);
+ }
+
+ return ERROR_OK;
+}
+
+int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
int type;
enum breakpoint_type bp_type;
wp_type = WPT_ACCESS;
if (*separator != ',')
- return;
+ {
+ ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
address = strtoul(separator+1, &separator, 16);
if (*separator != ',')
- return;
+ {
+ ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
size = strtoul(separator+1, &separator, 16);
{
if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
{
- if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
- {
- gdb_put_packet(connection, "E00", 3);
- break;
- }
+ if ((retval = gdb_bp_wp_packet_error(connection, retval)) != ERROR_OK)
+ return retval;
+ }
+ else
+ {
+ gdb_put_packet(connection, "OK", 2);
}
}
else
{
breakpoint_remove(target, address);
+ gdb_put_packet(connection, "OK", 2);
}
- gdb_put_packet(connection, "OK", 2);
break;
case 2:
case 3:
case 4:
{
if (packet[0] == 'Z')
- watchpoint_add(target, address, size, type-2, 0, 0xffffffffu);
+ {
+ if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
+ {
+ if ((retval = gdb_bp_wp_packet_error(connection, retval)) != ERROR_OK)
+ return retval;
+ }
+ else
+ {
+ gdb_put_packet(connection, "OK", 2);
+ }
+ }
else
+ {
watchpoint_remove(target, address);
- gdb_put_packet(connection, "OK", 2);
+ gdb_put_packet(connection, "OK", 2);
+ }
break;
}
default:
break;
}
+ return ERROR_OK;
}
void gdb_query_packet(connection_t *connection, char *packet, int packet_size)
{
command_context_t *cmd_ctx = connection->cmd_ctx;
- gdb_service_t *gdb_service = connection->service->priv;
- target_t *target = gdb_service->target;
if (strstr(packet, "qRcmd,"))
{
case ERROR_SERVER_REMOTE_CLOSED:
return ERROR_SERVER_REMOTE_CLOSED;
default:
- ERROR("unexpected error");
+ ERROR("BUG: unexpected error");
exit(-1);
}
}
if (packet_size > 0)
{
+ retval = ERROR_OK;
switch (packet[0])
{
case 'H':
gdb_query_packet(connection, packet, packet_size);
break;
case 'g':
- gdb_get_registers_packet(connection, target, packet, packet_size);
+ retval = gdb_get_registers_packet(connection, target, packet, packet_size);
break;
case 'G':
- gdb_set_registers_packet(connection, target, packet, packet_size);
+ retval = gdb_set_registers_packet(connection, target, packet, packet_size);
break;
case 'p':
- gdb_get_register_packet(connection, target, packet, packet_size);
+ retval = gdb_get_register_packet(connection, target, packet, packet_size);
break;
case 'P':
- gdb_set_register_packet(connection, target, packet, packet_size);
+ retval = gdb_set_register_packet(connection, target, packet, packet_size);
break;
case 'm':
- gdb_read_memory_packet(connection, target, packet, packet_size);
+ retval = gdb_read_memory_packet(connection, target, packet, packet_size);
break;
case 'M':
- gdb_write_memory_packet(connection, target, packet, packet_size);
+ retval = gdb_write_memory_packet(connection, target, packet, packet_size);
break;
case 'z':
case 'Z':
- gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
+ retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
break;
case '?':
gdb_last_signal_packet(connection, target, packet, packet_size);
gdb_put_packet(connection, "OK", 2);
break;
case 'X':
- gdb_write_memory_binary_packet(connection, target, packet, packet_size);
+ if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
+ return retval;
break;
case 'k':
gdb_put_packet(connection, "OK", 2);
gdb_put_packet(connection, NULL, 0);
break;
}
+
+ /* if a packet handler returned an error, exit input loop */
+ if (retval != ERROR_OK)
+ return retval;
}
if (gdb_con->ctrl_c)
Code Review / openocd.git / blobdiff