#define _DEBUG_GDB_IO_
#endif
+extern int gdb_error(connection_t *connection, int retval);
static unsigned short gdb_port;
static const char *DIGITS = "0123456789abcdef";
/* set if we are sending a memory map to gdb
* via qXfer:memory-map:read packet */
-int gdb_use_memory_map = 0;
-int gdb_flash_program = 0;
+/* enabled by default*/
+int gdb_use_memory_map = 1;
+/* enabled by default*/
+int gdb_flash_program = 1;
/* if set, data aborts cause an error to be reported in memory read packets
* see the code in gdb_read_memory_packet() for further explanations */
case DBG_REASON_NOTHALTED:
return 0x0; /* no signal... shouldn't happen */
default:
- ERROR("BUG: undefined debug reason");
- exit(-1);
+ LOG_USER("undefined debug reason %d - target needs reset", target->debug_reason);
+ return 0x0;
+ }
+}
+
+int check_pending(connection_t *connection, int timeout_s, int *got_data)
+{
+ /* a non-blocking socket will block if there is 0 bytes available on the socket,
+ * but return with as many bytes as are available immediately
+ */
+ struct timeval tv;
+ fd_set read_fds;
+ gdb_connection_t *gdb_con = connection->priv;
+ int t;
+ if (got_data==NULL)
+ got_data=&t;
+ *got_data=0;
+
+ if (gdb_con->buf_cnt>0)
+ {
+ *got_data = 1;
+ return ERROR_OK;
+ }
+
+ FD_ZERO(&read_fds);
+ FD_SET(connection->fd, &read_fds);
+
+ tv.tv_sec = timeout_s;
+ tv.tv_usec = 0;
+ if (select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 0)
+ {
+ /* This can typically be because a "monitor" command took too long
+ * before printing any progress messages
+ */
+ if (timeout_s>0)
+ {
+ return ERROR_GDB_TIMEOUT;
+ } else
+ {
+ return ERROR_OK;
+ }
}
+ *got_data=FD_ISSET(connection->fd, &read_fds)!=0;
+ return ERROR_OK;
}
int gdb_get_char(connection_t *connection, int* next_char)
{
gdb_connection_t *gdb_con = connection->priv;
+ int retval=ERROR_OK;
#ifdef _DEBUG_GDB_IO_
char *debug_buffer;
connection->input_pending = 0;
#ifdef _DEBUG_GDB_IO_
- DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
+ LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
#endif
return ERROR_OK;
for (;;)
{
-#ifndef _WIN32
- /* a non-blocking socket will block if there is 0 bytes available on the socket,
- * but return with as many bytes as are available immediately
- */
- struct timeval tv;
- fd_set read_fds;
-
- FD_ZERO(&read_fds);
- FD_SET(connection->fd, &read_fds);
-
- tv.tv_sec = 1;
- tv.tv_usec = 0;
- if (select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 0)
- {
- /* This can typically be because a "monitor" command took too long
- * before printing any progress messages
- */
- return ERROR_GDB_TIMEOUT;
- }
-#endif
+ retval=check_pending(connection, 1, NULL);
+ if (retval!=ERROR_OK)
+ return retval;
gdb_con->buf_cnt = read_socket(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
if (gdb_con->buf_cnt > 0)
{
usleep(1000);
break;
case WSAECONNABORTED:
+ gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
case WSAECONNRESET:
+ gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
default:
- ERROR("read: %d", errno);
+ LOG_ERROR("read: %d", errno);
exit(-1);
}
#else
usleep(1000);
break;
case ECONNABORTED:
+ gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
case ECONNRESET:
+ gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
default:
- ERROR("read: %s", strerror(errno));
+ LOG_ERROR("read: %s", strerror(errno));
+ gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
}
#endif
debug_buffer = malloc(gdb_con->buf_cnt + 1);
memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt);
debug_buffer[gdb_con->buf_cnt] = 0;
- DEBUG("received '%s'", debug_buffer);
+ LOG_DEBUG("received '%s'", debug_buffer);
free(debug_buffer);
#endif
else
connection->input_pending = 0;
#ifdef _DEBUG_GDB_IO_
- DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
+ LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
#endif
- return ERROR_OK;
+ return retval;
}
int gdb_putback_char(connection_t *connection, int last_char)
}
else
{
- ERROR("BUG: couldn't put character back");
+ LOG_ERROR("BUG: couldn't put character back");
}
return ERROR_OK;
for (i = 0; i < len; i++)
my_checksum += buffer[i];
+#ifdef _DEBUG_GDB_IO_
+ /*
+ * At this point we should have nothing in the input queue from GDB,
+ * however sometimes '-' is sent even though we've already received
+ * an ACK (+) for everything we've sent off.
+ */
+#ifndef _WIN32
+ int gotdata;
+ for (;;)
+ {
+ if ((retval=check_pending(connection, 0, &gotdata))!=ERROR_OK)
+ return retval;
+ if (!gotdata)
+ break;
+ if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
+ return retval;
+ LOG_WARNING("Discard unexpected char %c", reply);
+ }
+#endif
+#endif
+
while (1)
{
#ifdef _DEBUG_GDB_IO_
debug_buffer = malloc(len + 1);
memcpy(debug_buffer, buffer, len);
debug_buffer[len] = 0;
- DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
+ LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
free(debug_buffer);
#endif
-#if 0
- char checksum[3];
- gdb_write(connection, "$", 1);
- if (len > 0)
- gdb_write(connection, buffer, len);
- gdb_write(connection, "#", 1);
-
- snprintf(checksum, 3, "%2.2x", my_checksum);
- gdb_write(connection, checksum, 2);
-#else
- void *allocated = NULL;
- char stackAlloc[1024];
- char *t = stackAlloc;
- int totalLen = 1 + len + 1 + 2;
- if (totalLen > sizeof(stackAlloc))
+ char local_buffer[1024];
+ local_buffer[0] = '$';
+ if (len+4 <= sizeof(local_buffer))
{
- allocated = malloc(totalLen);
- t = allocated;
- if (allocated == NULL)
- {
- ERROR("Ran out of memory trying to reply packet %d\n", totalLen);
- exit(-1);
- }
+ /* performance gain on smaller packets by only a single call to gdb_write() */
+ memcpy(local_buffer+1, buffer, len++);
+ local_buffer[len++] = '#';
+ local_buffer[len++] = DIGITS[(my_checksum >> 4) & 0xf];
+ local_buffer[len++] = DIGITS[my_checksum & 0xf];
+ gdb_write(connection, local_buffer, len);
}
- t[0] = '$';
- memcpy(t + 1, buffer, len);
- t[1 + len] = '#';
- t[1 + len + 1] = DIGITS[(my_checksum >> 4) & 0xf];
- t[1 + len + 2] = DIGITS[my_checksum & 0xf];
-
- gdb_write(connection, t, totalLen);
-
- if (allocated)
+ else
{
- free(allocated);
+ /* larger packets are transmitted directly from caller supplied buffer
+ by several calls to gdb_write() to avoid dynamic allocation */
+ local_buffer[1] = '#';
+ local_buffer[2] = DIGITS[(my_checksum >> 4) & 0xf];
+ local_buffer[3] = DIGITS[my_checksum & 0xf];
+ gdb_write(connection, local_buffer, 1);
+ gdb_write(connection, buffer, len);
+ gdb_write(connection, local_buffer+1, 3);
}
-#endif
+
if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
return retval;
{
/* Stop sending output packets for now */
log_remove_callback(gdb_log_callback, connection);
- WARNING("negative reply, retrying");
+ LOG_WARNING("negative reply, retrying");
}
else if (reply == 0x3)
{
{
/* Stop sending output packets for now */
log_remove_callback(gdb_log_callback, connection);
- WARNING("negative reply, retrying");
+ LOG_WARNING("negative reply, retrying");
}
else
{
- ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
+ LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
+ gdb_con->closed=1;
return ERROR_SERVER_REMOTE_CLOSED;
}
}
else
{
- ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
+ LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
+ gdb_con->closed=1;
return ERROR_SERVER_REMOTE_CLOSED;
}
}
return retval;
#ifdef _DEBUG_GDB_IO_
- DEBUG("character: '%c'", character);
+ LOG_DEBUG("character: '%c'", character);
#endif
switch (character)
case '$':
break;
case '+':
- WARNING("acknowledgment received, but no packet pending");
+ LOG_WARNING("acknowledgment received, but no packet pending");
break;
case '-':
- WARNING("negative acknowledgment, but no packet pending");
+ LOG_WARNING("negative acknowledgment, but no packet pending");
break;
case 0x3:
gdb_con->ctrl_c = 1;
*len = 0;
return ERROR_OK;
default:
- WARNING("ignoring character 0x%x", character);
+ LOG_WARNING("ignoring character 0x%x", character);
break;
}
} while (character != '$');
}
if (count > *len)
{
- ERROR("packet buffer too small");
+ LOG_ERROR("packet buffer too small");
return ERROR_GDB_BUFFER_TOO_SMALL;
}
break;
}
- WARNING("checksum error, requesting retransmission");
+ LOG_WARNING("checksum error, requesting retransmission");
gdb_write(connection, "-", 1);
}
if (gdb_con->closed)
return ERROR_OK;
}
-int gdb_output(struct command_context_s *context, char* line)
+int gdb_output(struct command_context_s *context, const char* line)
{
/* this will be dumped to the log and also sent as an O packet if possible */
- USER_N(line);
+ LOG_USER_N("%s", line);
return ERROR_OK;
}
int gdb_program_handler(struct target_s *target, enum target_event event, void *priv)
{
- FILE *script;
struct command_context_s *cmd_ctx = priv;
- if (target->gdb_program_script)
- {
- script = open_file_from_path(cmd_ctx, target->gdb_program_script, "r");
- if (!script)
- {
- ERROR("couldn't open script file %s", target->gdb_program_script);
- return ERROR_OK;
- }
-
- INFO("executing gdb_program script '%s'", target->gdb_program_script);
- command_run_file(cmd_ctx, script, COMMAND_EXEC);
- fclose(script);
-
- jtag_execute_queue();
- }
+ target_invoke_script(cmd_ctx, target, "gdb_program");
+ jtag_execute_queue();
return ERROR_OK;
}
gdb_connection->vflash_image = NULL;
gdb_connection->closed = 0;
gdb_connection->busy = 0;
+
+ /* send ACK to GDB for debug request */
+ gdb_write(connection, "+", 1);
/* output goes through gdb connection */
command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
/* register callback to be informed about target events */
target_register_event_callback(gdb_target_callback_event_handler, connection);
- /* a gdb session just attached, put the target in halt mode */
- if (((retval = gdb_service->target->type->halt(gdb_service->target)) != ERROR_OK) &&
- (retval != ERROR_TARGET_ALREADY_HALTED))
- {
- ERROR("error(%d) when trying to halt target, falling back to \"reset halt\"", retval);
- command_run_line(connection->cmd_ctx, "reset halt");
- }
-
- /* This will time out after 1 second */
- command_run_line(connection->cmd_ctx, "wait_halt 1");
-
+ /* a gdb session just attached, try to put the target in halt mode.
+ *
+ * DANGER!!!!
+ *
+ * If the halt fails(e.g. target needs a reset, JTAG communication not
+ * working, etc.), then the GDB connect will succeed as
+ * the get_gdb_reg_list() will lie and return a register list with
+ * dummy values.
+ *
+ * This allows GDB monitor commands to be run from a GDB init script to
+ * initialize the target
+ *
+ * Also, since the halt() is asynchronous target connect will be
+ * instantaneous and thus avoiding annoying timeout problems during
+ * connect.
+ */
+ target_halt(gdb_service->target);
+
/* remove the initial ACK from the incoming buffer */
if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
return retval;
+ /* FIX!!!??? would we actually ever receive a + here???
+ * Not observed.
+ */
if (initial_ack != '+')
gdb_putback_char(connection, initial_ack);
}
else
{
- ERROR("BUG: connection->priv == NULL");
+ LOG_ERROR("BUG: connection->priv == NULL");
}
target_unregister_event_callback(gdb_target_callback_event_handler, connection);
buf = reg->value;
buf_len = CEIL(reg->size, 8);
- if (target->endianness == TARGET_LITTLE_ENDIAN)
+ for (i = 0; i < buf_len; i++)
{
- for (i = 0; i < buf_len; i++)
- {
- tstr[i*2] = DIGITS[(buf[i]>>4) & 0xf];
- tstr[i*2+1] = DIGITS[buf[i]&0xf];
- }
- }
- else
- {
- for (i = 0; i < buf_len; i++)
- {
- tstr[(buf_len-1-i)*2] = DIGITS[(buf[i]>>4)&0xf];
- tstr[(buf_len-1-i)*2+1] = DIGITS[buf[i]&0xf];
- }
+ tstr[i*2] = DIGITS[(buf[i]>>4) & 0xf];
+ tstr[i*2+1] = DIGITS[buf[i]&0xf];
}
}
if (str_len % 2)
{
- ERROR("BUG: gdb value with uneven number of characters encountered");
+ LOG_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)
{
- 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];
- }
+ str[str_len - i - 1] = tstr[i + 1];
+ str[str_len - i - 2] = tstr[i];
}
}
int i;
#ifdef _DEBUG_GDB_IO_
- DEBUG("-");
+ LOG_DEBUG("-");
#endif
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, 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);
- }
+ return gdb_error(connection, retval);
}
for (i = 0; i < reg_list_size; i++)
{
char *reg_packet_p;
reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2);
- DEBUG("reg_packet: %s", reg_packet_p);
+ LOG_DEBUG("reg_packet: %s", reg_packet_p);
free(reg_packet_p);
}
#endif
char *packet_p;
#ifdef _DEBUG_GDB_IO_
- DEBUG("-");
+ LOG_DEBUG("-");
#endif
/* skip command character */
if (packet_size % 2)
{
- WARNING("GDB set_registers packet with uneven characters received, dropping connection");
+ LOG_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 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);
- }
+ return gdb_error(connection, retval);
}
packet_p = packet;
arch_type = register_get_arch_type(reg_list[i]->arch_type);
if (arch_type == NULL)
{
- ERROR("BUG: encountered unregistered arch type");
+ LOG_ERROR("BUG: encountered unregistered arch type");
exit(-1);
}
arch_type->set(reg_list[i], bin_buf);
int retval;
#ifdef _DEBUG_GDB_IO_
- DEBUG("-");
+ LOG_DEBUG("-");
#endif
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, 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);
- }
+ return gdb_error(connection, retval);
}
if (reg_list_size <= reg_num)
{
- ERROR("gdb requested a non-existing register");
+ LOG_ERROR("gdb requested a non-existing register");
exit(-1);
}
int retval;
reg_arch_type_t *arch_type;
- DEBUG("-");
+ LOG_DEBUG("-");
if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
{
- switch (retval)
- {
- case ERROR_TARGET_NOT_HALTED:
- 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);
- }
+ return gdb_error(connection, retval);
}
if (reg_list_size < reg_num)
{
- ERROR("gdb requested a non-existing register");
- return ERROR_SERVER_REMOTE_CLOSED;
+ LOG_ERROR("gdb requested a non-existing register");
+ return ERROR_SERVER_REMOTE_CLOSED;
}
if (*separator != '=')
{
- ERROR("GDB 'set register packet', but no '=' following the register number");
+ LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
return ERROR_SERVER_REMOTE_CLOSED;
}
arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
if (arch_type == NULL)
{
- ERROR("BUG: encountered unregistered arch type");
+ LOG_ERROR("BUG: encountered unregistered arch type");
exit(-1);
}
arch_type->set(reg_list[reg_num], bin_buf);
return ERROR_OK;
}
-int gdb_memory_packet_error(connection_t *connection, int retval)
+int gdb_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;
case ERROR_TARGET_DATA_ABORT:
gdb_send_error(connection, EIO);
break;
case ERROR_TARGET_UNALIGNED_ACCESS:
gdb_send_error(connection, EFAULT);
break;
+ case ERROR_TARGET_NOT_HALTED:
+ gdb_send_error(connection, EFAULT);
+ break;
default:
/* This could be that the target reset itself. */
- ERROR("unexpected error %i. Dropping connection.", retval);
- return ERROR_SERVER_REMOTE_CLOSED;
+ LOG_ERROR("unexpected error %i", retval);
+ gdb_send_error(connection, EFAULT);
+ break;
}
return ERROR_OK;
if (*separator != ',')
{
- ERROR("incomplete read memory packet received, dropping connection");
+ LOG_ERROR("incomplete read memory packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
buffer = malloc(len);
- DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
+ LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
retval = target_read_buffer(target, addr, len, buffer);
}
else
{
- retval = gdb_memory_packet_error(connection, retval);
+ retval = gdb_error(connection, retval);
}
free(buffer);
if (*separator != ',')
{
- ERROR("incomplete write memory packet received, dropping connection");
+ LOG_ERROR("incomplete write memory packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
if (*(separator++) != ':')
{
- ERROR("incomplete write memory packet received, dropping connection");
+ LOG_ERROR("incomplete write memory packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
buffer = malloc(len);
- DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
+ LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
for (i=0; i<len; i++)
{
}
else
{
- if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
- return retval;
+ retval = gdb_error(connection, retval);
}
free(buffer);
- return ERROR_OK;
+ return retval;
}
int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
if (*separator != ',')
{
- ERROR("incomplete write memory binary packet received, dropping connection");
+ LOG_ERROR("incomplete write memory binary packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
if (*(separator++) != ':')
{
- ERROR("incomplete write memory binary packet received, dropping connection");
+ LOG_ERROR("incomplete write memory binary packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
retval = ERROR_OK;
if (len)
{
- DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
+ LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
retval = target_write_buffer(target, addr, len, (u8*)separator);
}
}
else
{
- if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
+ if ((retval = gdb_error(connection, retval)) != ERROR_OK)
return retval;
}
int current = 0;
u32 address = 0x0;
- DEBUG("-");
+ LOG_DEBUG("-");
if (packet_size > 1)
{
if (packet[0] == 'c')
{
- DEBUG("continue");
- target->type->resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
+ LOG_DEBUG("continue");
+ target_invoke_script(connection->cmd_ctx, target, "pre_resume");
+ target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
}
else if (packet[0] == 's')
{
- DEBUG("step");
+ LOG_DEBUG("step");
target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
}
}
-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;
char *separator;
int retval;
- DEBUG("-");
+ LOG_DEBUG("-");
type = strtoul(packet + 1, &separator, 16);
if (*separator != ',')
{
- ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
+ LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
if (*separator != ',')
{
- ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
+ LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
{
if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
{
- if ((retval = gdb_bp_wp_packet_error(connection, retval)) != ERROR_OK)
+ if ((retval = gdb_error(connection, retval)) != ERROR_OK)
return retval;
}
else
{
if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
{
- if ((retval = gdb_bp_wp_packet_error(connection, retval)) != ERROR_OK)
+ if ((retval = gdb_error(connection, retval)) != ERROR_OK)
return retval;
}
else
}
}
- va_list ap;
- int ret;
- va_start(ap, fmt);
- ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
- va_end(ap);
- if ((ret > 0) && ((ret + 1) < *size - *pos))
- {
- *pos += ret;
- return;
- }
- /* there was just enough or not enough space, allocate more. */
- first = 0;
+ va_list ap;
+ int ret;
+ va_start(ap, fmt);
+ ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
+ va_end(ap);
+ if ((ret > 0) && ((ret + 1) < *size - *pos))
+ {
+ *pos += ret;
+ return;
+ }
+ /* there was just enough or not enough space, allocate more. */
+ first = 0;
}
}
return block_size;
}
+static int compare_bank (const void * a, const void * b)
+{
+ flash_bank_t *b1, *b2;
+ b1=*((flash_bank_t **)a);
+ b2=*((flash_bank_t **)b);
+
+ if (b1->base==b2->base)
+ {
+ return 0;
+ } else if (b1->base>b2->base)
+ {
+ return 1;
+ } else
+ {
+ return -1;
+ }
+}
+
int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
command_context_t *cmd_ctx = connection->cmd_ctx;
/* We want to print all debug output to GDB connection */
log_add_callback(gdb_log_callback, connection);
- target_call_timer_callbacks();
+ target_call_timer_callbacks_now();
command_run_line(cmd_ctx, cmd);
+ target_call_timer_callbacks_now();
+ log_remove_callback(gdb_log_callback, connection);
free(cmd);
}
gdb_put_packet(connection, "OK", 2);
if (*separator != ',')
{
- ERROR("incomplete read memory packet received, dropping connection");
+ LOG_ERROR("incomplete read memory packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
}
else
{
- if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
+ if ((retval = gdb_error(connection, retval)) != ERROR_OK)
return retval;
}
length = strtoul(separator + 1, &separator, 16);
xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
-
- int i = 0;
- for (;;)
+
+ /*
+ sort banks in ascending order, we need to make non-flash memory be ram(or rather
+ read/write) by default for GDB.
+ GDB does not have a concept of non-cacheable read/write memory.
+ */
+ flash_bank_t **banks=malloc(sizeof(flash_bank_t *)*flash_get_bank_count());
+ int i;
+
+ for (i=0; i<flash_get_bank_count(); i++)
{
p = get_flash_bank_by_num(i);
if (p == NULL)
- break;
-
+ {
+ free(banks);
+ retval = ERROR_FAIL;
+ gdb_send_error(connection, retval);
+ return retval;
+ }
+ banks[i]=p;
+ }
+
+ qsort(banks, flash_get_bank_count(), sizeof(flash_bank_t *), compare_bank);
+
+ u32 ram_start=0;
+ for (i=0; i<flash_get_bank_count(); i++)
+ {
+ p = banks[i];
+
+ if (ram_start<p->base)
+ {
+ xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
+ ram_start, p->base-ram_start);
+ }
+
/* if device has uneven sector sizes, eg. str7, lpc
* we pass the smallest sector size to gdb memory map */
blocksize = gdb_calc_blocksize(p);
-
+
xml_printf(&retval, &xml, &pos, &size, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
"<property name=\"blocksize\">0x%x</property>\n" \
"</memory>\n", \
p->base, p->size, blocksize);
- i++;
+ ram_start=p->base+p->size;
}
+ if (ram_start!=0)
+ {
+ xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" 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 */
+ }
+
+ free(banks);
+ banks = NULL;
xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
return retval;
}
- gdb_put_packet(connection, xml, strlen(xml) + 1);
+ gdb_put_packet(connection, xml, strlen(xml));
free(xml);
return ERROR_OK;
char *parse = packet + 12;
if (*parse == '\0')
{
- ERROR("incomplete vFlashErase packet received, dropping connection");
+ LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
if (*(parse++) != ',' || *parse == '\0')
{
- ERROR("incomplete vFlashErase packet received, dropping connection");
+ LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
if (*parse != '\0')
{
- ERROR("incomplete vFlashErase packet received, dropping connection");
+ LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
* treat a failed erase as an I/O error
*/
gdb_send_error(connection, EIO);
- ERROR("flash_erase returned %i", result);
+ LOG_ERROR("flash_erase returned %i", result);
}
else
gdb_put_packet(connection, "OK", 2);
if (*parse == '\0')
{
- ERROR("incomplete vFlashErase packet received, dropping connection");
+ LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
addr = strtoul(parse, &parse, 16);
if (*(parse++) != ':')
{
- ERROR("incomplete vFlashErase packet received, dropping connection");
+ LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
length = packet_size - (parse - packet);
}
else
{
- DEBUG("wrote %u bytes from vFlash image to flash", written);
+ LOG_DEBUG("wrote %u bytes from vFlash image to flash", written);
gdb_put_packet(connection, "OK", 2);
}
switch( detach_mode )
{
case GDB_DETACH_RESUME:
- target->type->resume(target, 1, 0, 1, 0);
+ target_invoke_script(connection->cmd_ctx, target, "pre_resume");
+ target_resume(target, 1, 0, 1, 0);
break;
case GDB_DETACH_RESET:
- target_process_reset(connection->cmd_ctx);
+ /* FIX?? make this configurable?? */
+ target_process_reset(connection->cmd_ctx, RESET_HALT);
break;
case GDB_DETACH_HALT:
- target->type->halt(target);
+ target_halt(target);
break;
case GDB_DETACH_NOTHING:
gdb_output_con(connection, string);
}
+/* Do not allocate this on the stack */
+char gdb_packet_buffer[GDB_BUFFER_SIZE];
+
int gdb_input_inner(connection_t *connection)
{
gdb_service_t *gdb_service = connection->service->priv;
target_t *target = gdb_service->target;
- char packet[GDB_BUFFER_SIZE];
+ char *packet=gdb_packet_buffer;
int packet_size;
int retval;
gdb_connection_t *gdb_con = connection->priv;
/* terminate with zero */
packet[packet_size] = 0;
- DEBUG("received packet: '%s'", packet);
+ LOG_DEBUG("received packet: '%s'", packet);
if (packet_size > 0)
{
case 'c':
case 's':
{
- /* We're running/stepping, in which case we can
- * forward log output until the target is halted */
- gdb_connection_t *gdb_con = connection->priv;
- gdb_con->frontend_state = TARGET_RUNNING;
- log_add_callback(gdb_log_callback, connection);
- gdb_step_continue_packet(connection, target, packet, packet_size);
+ if (target->state != TARGET_HALTED)
+ {
+ /* If the target isn't in the halted state, then we can't
+ * step/continue. This might be early setup, etc.
+ */
+ char sig_reply[4];
+ snprintf(sig_reply, 4, "T%2.2x", 2);
+ gdb_put_packet(connection, sig_reply, 3);
+ } else
+ {
+ /* We're running/stepping, in which case we can
+ * forward log output until the target is halted
+ */
+ gdb_connection_t *gdb_con = connection->priv;
+ gdb_con->frontend_state = TARGET_RUNNING;
+ log_add_callback(gdb_log_callback, connection);
+ gdb_step_continue_packet(connection, target, packet, packet_size);
+ }
}
break;
case 'v':
break;
case 'R':
/* handle extended restart packet */
- target_process_reset(connection->cmd_ctx);
+ /* fix?? make this configurable? */
+ target_process_reset(connection->cmd_ctx, RESET_HALT);
break;
default:
/* ignore unkown packets */
- DEBUG("ignoring 0x%2.2x packet", packet[0]);
+ LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
gdb_put_packet(connection, NULL, 0);
break;
}
{
if (target->state == TARGET_RUNNING)
{
- target->type->halt(target);
+ target_halt(target);
gdb_con->ctrl_c = 0;
}
}
int gdb_input(connection_t *connection)
{
int retval = gdb_input_inner(connection);
+ gdb_connection_t *gdb_con = connection->priv;
if (retval == ERROR_SERVER_REMOTE_CLOSED)
return retval;
+
+ /* logging does not propagate the error, yet can set th gdb_con->closed flag */
+ if (gdb_con->closed)
+ return ERROR_SERVER_REMOTE_CLOSED;
+
/* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
return ERROR_OK;
}
if (!target)
{
- WARNING("no gdb ports allocated as no target has been specified");
+ LOG_WARNING("no gdb ports allocated as no target has been specified");
return ERROR_OK;
}
if (gdb_port == 0)
{
- WARNING("no gdb port specified, using default port 3333");
+ LOG_WARNING("no gdb port specified, using default port 3333");
gdb_port = 3333;
}
add_service("gdb", CONNECTION_GDB, gdb_port + i, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service);
- DEBUG("gdb service for target %s at port %i", target->type->name, gdb_port + i);
+ LOG_DEBUG("gdb service for target %s at port %i", target->type->name, gdb_port + i);
i++;
target = target->next;
}
}
- WARNING("invalid gdb_detach configuration directive: %s", args[0]);
+ LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]);
return ERROR_OK;
}
}
}
- WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
+ LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
return ERROR_OK;
}
}
}
- WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
+ LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
return ERROR_OK;
}
}
}
- WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
+ LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
return ERROR_OK;
}
Code Review / openocd.git / blobdiff