* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
#include "config.h"
#endif
-#include "replacements.h"
-
#include "gdb_server.h"
-
+#include "target_request.h"
+#include "register.h"
#include "server.h"
-#include "log.h"
-#include "binarybuffer.h"
-#include "jtag.h"
-#include "breakpoints.h"
#include "flash.h"
-#include "target_request.h"
-#include "configuration.h"
+#include "image.h"
+#include "jtag.h"
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
#if 0
#define _DEBUG_GDB_IO_
#endif
+static gdb_connection_t *current_gdb_connection;
+
+static int gdb_breakpoint_override;
+static enum breakpoint_type gdb_breakpoint_override_type;
+
extern int gdb_error(connection_t *connection, int retval);
-static unsigned short gdb_port;
+static unsigned short gdb_port = 3333;
static const char *DIGITS = "0123456789abcdef";
-static void gdb_log_callback(void *priv, const char *file, int line,
+static void gdb_log_callback(void *priv, const char *file, unsigned line,
const char *function, const char *string);
-enum gdb_detach_mode
-{
- GDB_DETACH_RESUME,
- GDB_DETACH_RESET,
- GDB_DETACH_HALT,
- GDB_DETACH_NOTHING
-};
-
-/* target behaviour on gdb detach */
-enum gdb_detach_mode detach_mode = GDB_DETACH_RESUME;
+/* number of gdb connections, mainly to supress gdb related debugging spam
+ * in helper/log.c when no gdb connections are actually active */
+int gdb_actual_connections;
/* 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 */
fd_set read_fds;
gdb_connection_t *gdb_con = connection->priv;
int t;
- if (got_data==NULL)
+ if (got_data == NULL)
got_data=&t;
- *got_data=0;
+ *got_data = 0;
- if (gdb_con->buf_cnt>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)
+ if (socket_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)
+ if (timeout_s > 0)
{
return ERROR_GDB_TIMEOUT;
} else
return ERROR_OK;
}
}
- *got_data=FD_ISSET(connection->fd, &read_fds)!=0;
+ *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;
+ int retval = ERROR_OK;
#ifdef _DEBUG_GDB_IO_
char *debug_buffer;
for (;;)
{
- 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 (connection->service->type == CONNECTION_PIPE)
+ {
+ gdb_con->buf_cnt = read(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
+ }
+ else
+ {
+ 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)
{
break;
#ifdef _WIN32
errno = WSAGetLastError();
- switch(errno)
+ switch (errno)
{
case WSAEWOULDBLOCK:
usleep(1000);
exit(-1);
}
#else
- switch(errno)
+ switch (errno)
{
case EAGAIN:
usleep(1000);
if (gdb_con->closed)
return ERROR_SERVER_REMOTE_CLOSED;
- if (write_socket(connection->fd, data, len) == len)
+ if (connection->service->type == CONNECTION_PIPE)
{
- return ERROR_OK;
+ /* write to stdout */
+ if (write(STDOUT_FILENO, data, len) == len)
+ {
+ return ERROR_OK;
+ }
+ }
+ else
+ {
+ if (write_socket(connection->fd, data, len) == len)
+ {
+ return ERROR_OK;
+ }
}
gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
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)
+ 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;
+ if (reply == '$') {
+ /* fix a problem with some IAR tools */
+ gdb_putback_char(connection, reply);
+ LOG_DEBUG("Unexpected start of new packet");
+ break;
+ }
+
LOG_WARNING("Discard unexpected char %c", reply);
}
-#endif
#endif
while (1)
char local_buffer[1024];
local_buffer[0] = '$';
- if (len+4 <= sizeof(local_buffer))
+ if ((size_t)len + 4 <= sizeof(local_buffer))
{
/* performance gain on smaller packets by only a single call to gdb_write() */
- memcpy(local_buffer+1, buffer, len++);
+ 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);
+ if ((retval = gdb_write(connection, local_buffer, len)) != ERROR_OK)
+ {
+ return retval;
+ }
}
else
{
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);
+ if ((retval = gdb_write(connection, local_buffer, 1)) != ERROR_OK)
+ {
+ return retval;
+ }
+ if ((retval = gdb_write(connection, buffer, len)) != ERROR_OK)
+ {
+ return retval;
+ }
+ if ((retval = gdb_write(connection, local_buffer + 1, 3)) != ERROR_OK)
+ {
+ return retval;
+ }
}
+ if (gdb_con->noack_mode)
+ break;
+
if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
return retval;
log_remove_callback(gdb_log_callback, connection);
LOG_WARNING("negative reply, retrying");
}
- else
- {
- LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
- gdb_con->closed=1;
+ else if (reply == '$') {
+ LOG_ERROR("GDB missing ack(1) - assumed good");
+ gdb_putback_char(connection, reply);
+ return ERROR_OK;
+ } else {
+
+ LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply);
+ gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
}
}
+ else if (reply == '$') {
+ LOG_ERROR("GDB missing ack(2) - assumed good");
+ gdb_putback_char(connection, reply);
+ return ERROR_OK;
+ }
else
{
- LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
- gdb_con->closed=1;
+ LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection", reply);
+ gdb_con->closed = 1;
return ERROR_SERVER_REMOTE_CLOSED;
}
}
gdb_con->busy = 1;
int retval = gdb_put_packet_inner(connection, buffer, len);
gdb_con->busy = 0;
+
+ /* we sent some data, reset timer for keep alive messages */
+ kept_alive();
+
return retval;
}
-int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len)
+static __inline__ int fetch_packet(connection_t *connection, int *checksum_ok, int noack, int *len, char *buffer)
{
+ unsigned char my_checksum = 0;
+ char checksum[3];
int character;
+ int retval;
+
+ gdb_connection_t *gdb_con = connection->priv;
+ my_checksum = 0;
int count = 0;
+ count = 0;
+ for (;;)
+ {
+ /* The common case is that we have an entire packet with no escape chars.
+ * We need to leave at least 2 bytes in the buffer to have
+ * gdb_get_char() update various bits and bobs correctly.
+ */
+ if ((gdb_con->buf_cnt > 2) && ((gdb_con->buf_cnt + count) < *len))
+ {
+ /* The compiler will struggle a bit with constant propagation and
+ * aliasing, so we help it by showing that these values do not
+ * change inside the loop
+ */
+ int i;
+ char *buf = gdb_con->buf_p;
+ int run = gdb_con->buf_cnt - 2;
+ i = 0;
+ int done = 0;
+ while (i < run)
+ {
+ character = *buf++;
+ i++;
+ if (character == '#')
+ {
+ /* Danger! character can be '#' when esc is
+ * used so we need an explicit boolean for done here.
+ */
+ done = 1;
+ break;
+ }
+
+ if (character == '}')
+ {
+ /* data transmitted in binary mode (X packet)
+ * uses 0x7d as escape character */
+ my_checksum += character & 0xff;
+ character = *buf++;
+ i++;
+ my_checksum += character & 0xff;
+ buffer[count++] = (character ^ 0x20) & 0xff;
+ }
+ else
+ {
+ my_checksum += character & 0xff;
+ buffer[count++] = character & 0xff;
+ }
+ }
+ gdb_con->buf_p += i;
+ gdb_con->buf_cnt -= i;
+ if (done)
+ break;
+ }
+ if (count > *len)
+ {
+ LOG_ERROR("packet buffer too small");
+ return ERROR_GDB_BUFFER_TOO_SMALL;
+ }
+
+ if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ return retval;
+
+ if (character == '#')
+ break;
+
+ if (character == '}')
+ {
+ /* data transmitted in binary mode (X packet)
+ * uses 0x7d as escape character */
+ my_checksum += character & 0xff;
+ if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ return retval;
+ my_checksum += character & 0xff;
+ buffer[count++] = (character ^ 0x20) & 0xff;
+ }
+ else
+ {
+ my_checksum += character & 0xff;
+ buffer[count++] = character & 0xff;
+ }
+ }
+
+ *len = count;
+
+ if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ return retval;
+ checksum[0] = character;
+ if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ return retval;
+ checksum[1] = character;
+ checksum[2] = 0;
+
+ if (!noack)
+ {
+ *checksum_ok = (my_checksum == strtoul(checksum, NULL, 16));
+ }
+
+ return ERROR_OK;
+}
+
+int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len)
+{
+ int character;
int retval;
- char checksum[3];
- unsigned char my_checksum = 0;
gdb_connection_t *gdb_con = connection->priv;
while (1)
case '$':
break;
case '+':
+ /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c)
+ * incase anyone tries to debug why they receive this warning every time */
LOG_WARNING("acknowledgment received, but no packet pending");
break;
case '-':
}
} while (character != '$');
- my_checksum = 0;
- count = 0;
- gdb_connection_t *gdb_con = connection->priv;
- for (;;)
- {
- /* The common case is that we have an entire packet with no escape chars.
- * We need to leave at least 2 bytes in the buffer to have
- * gdb_get_char() update various bits and bobs correctly.
- */
- if ((gdb_con->buf_cnt > 2) && ((gdb_con->buf_cnt+count) < *len))
- {
- /* The compiler will struggle a bit with constant propagation and
- * aliasing, so we help it by showing that these values do not
- * change inside the loop
- */
- int i;
- char *buf = gdb_con->buf_p;
- int run = gdb_con->buf_cnt - 2;
- i = 0;
- int done = 0;
- while (i < run)
- {
- character = *buf++;
- i++;
- if (character == '#')
- {
- /* Danger! character can be '#' when esc is
- * used so we need an explicit boolean for done here.
- */
- done = 1;
- break;
- }
- if (character == '}')
- {
- /* data transmitted in binary mode (X packet)
- * uses 0x7d as escape character */
- my_checksum += character & 0xff;
- character = *buf++;
- i++;
- my_checksum += character & 0xff;
- buffer[count++] = (character ^ 0x20) & 0xff;
- } else
- {
- my_checksum += character & 0xff;
- buffer[count++] = character & 0xff;
- }
- }
- gdb_con->buf_p += i;
- gdb_con->buf_cnt -= i;
- if (done)
- break;
- }
- if (count > *len)
- {
- LOG_ERROR("packet buffer too small");
- return ERROR_GDB_BUFFER_TOO_SMALL;
- }
-
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
+ int checksum_ok = 0;
+ /* explicit code expansion here to get faster inlined code in -O3 by not
+ * calculating checksum
+ */
+ if (gdb_con->noack_mode)
+ {
+ if ((retval = fetch_packet(connection, &checksum_ok, 1, len, buffer)) != ERROR_OK)
+ return retval;
+ } else
+ {
+ if ((retval = fetch_packet(connection, &checksum_ok, 0, len, buffer)) != ERROR_OK)
return retval;
-
- if (character == '#')
- break;
-
- if (character == '}')
- {
- /* data transmitted in binary mode (X packet)
- * uses 0x7d as escape character */
- my_checksum += character & 0xff;
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
- return retval;
- my_checksum += character & 0xff;
- buffer[count++] = (character ^ 0x20) & 0xff;
- }
- else
- {
- my_checksum += character & 0xff;
- buffer[count++] = character & 0xff;
- }
-
}
- *len = count;
-
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
- return retval;
- checksum[0] = character;
- if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
- return retval;
- checksum[1] = character;
- checksum[2] = 0;
-
- if (my_checksum == strtoul(checksum, NULL, 16))
+ if (gdb_con->noack_mode)
{
- gdb_write(connection, "+", 1);
+ /* checksum is not checked in noack mode */
+ break;
+ }
+ if (checksum_ok)
+ {
+ if ((retval = gdb_write(connection, "+", 1)) != ERROR_OK)
+ {
+ return retval;
+ }
break;
}
-
- LOG_WARNING("checksum error, requesting retransmission");
- gdb_write(connection, "-", 1);
}
if (gdb_con->closed)
return ERROR_SERVER_REMOTE_CLOSED;
return ERROR_GDB_BUFFER_TOO_SMALL;
hex_buffer[0] = 'O';
- for (i=0; i<bin_size; i++)
+ for (i = 0; i < bin_size; i++)
snprintf(hex_buffer + 1 + i*2, 3, "%2.2x", line[i]);
- hex_buffer[bin_size*2+1] = 0;
+ hex_buffer[bin_size*2 + 1] = 0;
- gdb_put_packet(connection, hex_buffer, bin_size*2 + 1);
+ int retval = gdb_put_packet(connection, hex_buffer, bin_size*2 + 1);
free(hex_buffer);
- return ERROR_OK;
+ return retval;
}
-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 */
LOG_USER_N("%s", line);
return ERROR_OK;
}
-int gdb_program_handler(struct target_s *target, enum target_event event, void *priv)
+
+static void gdb_frontend_halted(struct target_s *target, connection_t *connection)
{
- FILE *script;
- struct command_context_s *cmd_ctx = priv;
+ gdb_connection_t *gdb_connection = connection->priv;
- if (target->gdb_program_script)
+ /* In the GDB protocol when we are stepping or continuing execution,
+ * we have a lingering reply. Upon receiving a halted event
+ * when we have that lingering packet, we reply to the original
+ * step or continue packet.
+ *
+ * Executing monitor commands can bring the target in and
+ * out of the running state so we'll see lots of TARGET_EVENT_XXX
+ * that are to be ignored.
+ */
+ if (gdb_connection->frontend_state == TARGET_RUNNING)
{
- script = open_file_from_path(target->gdb_program_script, "r");
- if (!script)
+ char sig_reply[4];
+ int signal;
+
+ /* stop forwarding log packets! */
+ log_remove_callback(gdb_log_callback, connection);
+
+ if (gdb_connection->ctrl_c)
{
- LOG_ERROR("couldn't open script file %s", target->gdb_program_script);
- return ERROR_OK;
+ signal = 0x2;
+ gdb_connection->ctrl_c = 0;
+ }
+ else
+ {
+ signal = gdb_last_signal(target);
}
- LOG_INFO("executing gdb_program script '%s'", target->gdb_program_script);
- command_run_file(cmd_ctx, script, COMMAND_EXEC);
- fclose(script);
-
- jtag_execute_queue();
+ snprintf(sig_reply, 4, "T%2.2x", signal);
+ gdb_put_packet(connection, sig_reply, 3);
+ gdb_connection->frontend_state = TARGET_HALTED;
}
-
- return ERROR_OK;
}
int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
{
+ int retval;
connection_t *connection = priv;
- gdb_connection_t *gdb_connection = connection->priv;
- char sig_reply[4];
- int signal;
+ target_handle_event(target, event);
switch (event)
{
+ case TARGET_EVENT_GDB_HALT:
+ gdb_frontend_halted(target, connection);
+ break;
case TARGET_EVENT_HALTED:
- /* In the GDB protocol when we are stepping or coninuing execution,
- * we have a lingering reply. Upon receiving a halted event
- * when we have that lingering packet, we reply to the original
- * step or continue packet.
- *
- * Executing monitor commands can bring the target in and
- * out of the running state so we'll see lots of TARGET_EVENT_XXX
- * that are to be ignored.
- */
- if (gdb_connection->frontend_state == TARGET_RUNNING)
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_END);
+ break;
+ case TARGET_EVENT_GDB_FLASH_ERASE_START:
+ target_handle_event(target, TARGET_EVENT_OLD_gdb_program_config);
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
{
- /* stop forwarding log packets! */
- log_remove_callback(gdb_log_callback, connection);
-
- if (gdb_connection->ctrl_c)
- {
- signal = 0x2;
- gdb_connection->ctrl_c = 0;
- }
- else
- {
- signal = gdb_last_signal(target);
- }
-
- snprintf(sig_reply, 4, "T%2.2x", signal);
- gdb_put_packet(connection, sig_reply, 3);
- gdb_connection->frontend_state = TARGET_HALTED;
+ return retval;
}
break;
- case TARGET_EVENT_GDB_PROGRAM:
- gdb_program_handler(target, event, connection->cmd_ctx);
- break;
default:
break;
}
return ERROR_OK;
}
-
int gdb_new_connection(connection_t *connection)
{
gdb_connection_t *gdb_connection = malloc(sizeof(gdb_connection_t));
gdb_connection->vflash_image = NULL;
gdb_connection->closed = 0;
gdb_connection->busy = 0;
-
+ gdb_connection->noack_mode = 0;
+ gdb_connection->sync = true;
+
/* 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);
+ /* we must remove all breakpoints registered to the target as a previous
+ * GDB session could leave dangling breakpoints if e.g. communication
+ * timed out.
+ */
+ breakpoint_clear_target(gdb_service->target);
+ watchpoint_clear_target(gdb_service->target);
+
/* register callback to be informed about target events */
target_register_event_callback(gdb_target_callback_event_handler, connection);
- /* 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???
+ /* FIX!!!??? would we actually ever receive a + here???
* Not observed.
*/
if (initial_ack != '+')
gdb_putback_char(connection, initial_ack);
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_ATTACH);
+
+ gdb_actual_connections++;
+ LOG_DEBUG("New GDB Connection: %d, Target %s, state: %s",
+ gdb_actual_connections,
+ gdb_service->target->cmd_name,
+ target_state_name(gdb_service->target));
return ERROR_OK;
}
gdb_service_t *gdb_service = connection->service->priv;
gdb_connection_t *gdb_connection = connection->priv;
+ /* we're done forwarding messages. Tear down callback before
+ * cleaning up connection.
+ */
+ log_remove_callback(gdb_log_callback, connection);
+
+ gdb_actual_connections--;
+ LOG_DEBUG("GDB Close, Target: %s, state: %s, gdb_actual_connections=%d",
+ gdb_service->target->cmd_name,
+ target_state_name(gdb_service->target),
+ gdb_actual_connections);
+
/* see if an image built with vFlash commands is left */
if (gdb_connection->vflash_image)
{
LOG_ERROR("BUG: connection->priv == NULL");
}
+
target_unregister_event_callback(gdb_target_callback_event_handler, connection);
- log_remove_callback(gdb_log_callback, connection);
+
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_END);
+
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH);
return ERROR_OK;
}
-void gdb_send_error(connection_t *connection, u8 the_error)
+void gdb_send_error(connection_t *connection, uint8_t the_error)
{
char err[4];
- snprintf(err, 4, "E%2.2X", the_error );
+ snprintf(err, 4, "E%2.2X", the_error);
gdb_put_packet(connection, err, 3);
}
return ERROR_OK;
}
-/* Convert register to string of bits. NB! The # of bits in the
+static int gdb_reg_pos(target_t *target, int pos, int len)
+{
+ if (target->endianness == TARGET_LITTLE_ENDIAN)
+ return pos;
+ else
+ return len - 1 - pos;
+}
+
+/* Convert register to string of bytes. NB! The # of bits in the
* register might be non-divisible by 8(a byte), in which
- * case an entire byte is shown. */
+ * case an entire byte is shown.
+ *
+ * NB! the format on the wire is the target endianess
+ *
+ * The format of reg->value is little endian
+ *
+ */
void gdb_str_to_target(target_t *target, char *tstr, reg_t *reg)
{
int i;
- u8 *buf;
+ uint8_t *buf;
int buf_len;
buf = reg->value;
buf_len = CEIL(reg->size, 8);
for (i = 0; i < buf_len; i++)
{
- tstr[i*2] = DIGITS[(buf[i]>>4) & 0xf];
- tstr[i*2+1] = DIGITS[buf[i]&0xf];
+ int j = gdb_reg_pos(target, i, buf_len);
+ tstr[i*2] = DIGITS[(buf[j]>>4) & 0xf];
+ tstr[i*2 + 1] = DIGITS[buf[j]&0xf];
}
}
-void gdb_target_to_str(target_t *target, char *tstr, char *str)
+static int hextoint(char c)
{
- int str_len = strlen(tstr);
- int i;
+ if (c>='0'&&c<='9')
+ {
+ return c-'0';
+ }
+ c = toupper(c);
+ if (c>='A'&&c<='F')
+ {
+ return c-'A'+10;
+ }
+ LOG_ERROR("BUG: invalid register value %08x", c);
+ return 0;
+}
+/* copy over in register buffer */
+void gdb_target_to_reg(target_t *target, char *tstr, int str_len, uint8_t *bin)
+{
if (str_len % 2)
{
LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
exit(-1);
}
- for (i = 0; i < str_len; i+=2)
+ int i;
+ for (i = 0; i < str_len; i += 2)
{
- str[str_len - i - 1] = tstr[i + 1];
- str[str_len - i - 2] = tstr[i];
+ uint8_t t = hextoint(tstr[i]) << 4;
+ t |= hextoint(tstr[i + 1]);
+
+ int j = gdb_reg_pos(target, i/2, str_len/2);
+ bin[j] = t;
}
}
LOG_DEBUG("-");
#endif
- if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
+ if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
{
return gdb_error(connection, retval);
}
return ERROR_SERVER_REMOTE_CLOSED;
}
- if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
+ if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
{
return gdb_error(connection, retval);
}
packet_p = packet;
for (i = 0; i < reg_list_size; i++)
{
- u8 *bin_buf;
- char *hex_buf;
- reg_arch_type_t *arch_type;
+ uint8_t *bin_buf;
+ int chars = (CEIL(reg_list[i]->size, 8) * 2);
- /* 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);
+ if (packet_p + chars > packet + packet_size)
+ {
+ LOG_ERROR("BUG: register packet is too small for registers");
+ }
- /* convert hex-string to binary buffer */
+ reg_arch_type_t *arch_type;
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);
+ gdb_target_to_reg(target, packet_p, chars, bin_buf);
/* get register arch_type, and call set method */
arch_type = register_get_arch_type(reg_list[i]->arch_type);
- if (arch_type == NULL)
- {
- LOG_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);
+ packet_p += chars;
+
free(bin_buf);
- free(hex_buf);
}
/* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
LOG_DEBUG("-");
#endif
- if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
+ if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
{
return gdb_error(connection, retval);
}
int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
char *separator;
- char *hex_buf;
- u8 *bin_buf;
+ uint8_t *bin_buf;
int reg_num = strtoul(packet + 1, &separator, 16);
reg_t **reg_list;
int reg_list_size;
LOG_DEBUG("-");
- if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
+ if ((retval = target_get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
{
return gdb_error(connection, retval);
}
if (reg_list_size < reg_num)
{
LOG_ERROR("gdb requested a non-existing register");
- return ERROR_SERVER_REMOTE_CLOSED;
+ return ERROR_SERVER_REMOTE_CLOSED;
}
if (*separator != '=')
}
/* 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);
+ int chars = (CEIL(reg_list[reg_num]->size, 8) * 2);
+
+ /* fix!!! add some sanity checks on packet size here */
+
+ gdb_target_to_reg(target, separator + 1, chars, bin_buf);
- /* get register arch_type, and call set method */
+ /* get register arch_type, and call set method */
arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
- if (arch_type == NULL)
- {
- LOG_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;
int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
char *separator;
- u32 addr = 0;
- u32 len = 0;
+ uint32_t addr = 0;
+ uint32_t len = 0;
- u8 *buffer;
+ uint8_t *buffer;
char *hex_buffer;
int retval = ERROR_OK;
return ERROR_SERVER_REMOTE_CLOSED;
}
- len = strtoul(separator+1, NULL, 16);
+ len = strtoul(separator + 1, NULL, 16);
buffer = malloc(len);
- LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
+ LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
retval = target_read_buffer(target, addr, len, buffer);
- if ((retval == ERROR_TARGET_DATA_ABORT) && (!gdb_report_data_abort))
+ 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.
* At some point this might be fixed in GDB, in which case this code can be removed.
* gained by involving the user in this problem that hopefully will get resolved
* eventually
*
- * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2395
+ * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd = view%20audit-trail&database = gdb&pr = 2395
*
* For now, the default is to fix up things to make current GDB versions work.
* This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
{
hex_buffer = malloc(len * 2 + 1);
- int i;
+ uint32_t i;
for (i = 0; i < len; i++)
{
- u8 t = buffer[i];
+ uint8_t t = buffer[i];
hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
}
int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
char *separator;
- u32 addr = 0;
- u32 len = 0;
+ uint32_t addr = 0;
+ uint32_t len = 0;
- u8 *buffer;
+ uint8_t *buffer;
- int i;
+ uint32_t i;
int retval;
/* skip command character */
return ERROR_SERVER_REMOTE_CLOSED;
}
- len = strtoul(separator+1, &separator, 16);
+ len = strtoul(separator + 1, &separator, 16);
if (*(separator++) != ':')
{
buffer = malloc(len);
- LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
+ LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
- for (i=0; i<len; i++)
+ for (i = 0; i < len; i++)
{
- u32 tmp;
- sscanf(separator + 2*i, "%2x", &tmp);
+ uint32_t tmp;
+ sscanf(separator + 2*i, "%2" SCNx32 , &tmp);
buffer[i] = tmp;
}
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;
+ uint32_t addr = 0;
+ uint32_t len = 0;
int retval;
return ERROR_SERVER_REMOTE_CLOSED;
}
- len = strtoul(separator+1, &separator, 16);
+ len = strtoul(separator + 1, &separator, 16);
if (*(separator++) != ':')
{
retval = ERROR_OK;
if (len)
{
- LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
+ LOG_DEBUG("addr: 0x%8.8" PRIx32 ", len: 0x%8.8" PRIx32 "", addr, len);
- retval = target_write_buffer(target, addr, len, (u8*)separator);
+ retval = target_write_buffer(target, addr, len, (uint8_t*)separator);
}
if (retval == ERROR_OK)
return ERROR_OK;
}
-void gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
int current = 0;
- u32 address = 0x0;
+ uint32_t address = 0x0;
+ int retval = ERROR_OK;
LOG_DEBUG("-");
if (packet[0] == 'c')
{
LOG_DEBUG("continue");
- target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
+ target_handle_event(target, TARGET_EVENT_OLD_pre_resume);
+ retval = target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
}
else if (packet[0] == 's')
{
LOG_DEBUG("step");
- target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
+ /* step at current or address, don't handle breakpoints */
+ retval = target_step(target, current, address, 0);
}
+ return retval;
}
int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
int type;
enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
enum watchpoint_rw wp_type;
- u32 address;
- u32 size;
+ uint32_t address;
+ uint32_t size;
char *separator;
int retval;
else if (type == 4) /* access watchpoint */
wp_type = WPT_ACCESS;
+ if (gdb_breakpoint_override && ((bp_type == BKPT_SOFT)||(bp_type == BKPT_HARD)))
+ {
+ bp_type = gdb_breakpoint_override_type;
+ }
+
if (*separator != ',')
{
LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
- address = strtoul(separator+1, &separator, 16);
+ address = strtoul(separator + 1, &separator, 16);
if (*separator != ',')
{
return ERROR_SERVER_REMOTE_CLOSED;
}
- size = strtoul(separator+1, &separator, 16);
+ size = strtoul(separator + 1, &separator, 16);
switch (type)
{
if (*separator != ',')
return -1;
- *len = strtoul(separator+1, NULL, 16);
+ *len = strtoul(separator + 1, NULL, 16);
return 0;
}
int gdb_calc_blocksize(flash_bank_t *bank)
{
- int i;
- int block_size = 0xffffffff;
+ uint32_t i;
+ uint32_t block_size = 0xffffffff;
/* loop through all sectors and return smallest sector size */
- for (i = 0; i < bank->num_sectors; i++)
+ for (i = 0; i < (uint32_t)bank->num_sectors; i++)
{
if (bank->sectors[i].size < block_size)
block_size = bank->sectors[i].size;
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;
+ gdb_connection_t *gdb_connection = connection->priv;
if (strstr(packet, "qRcmd,"))
{
char *cmd;
int i;
cmd = malloc((packet_size - 6)/2 + 1);
- for (i=0; i < (packet_size - 6)/2; i++)
+ for (i = 0; i < (packet_size - 6)/2; i++)
{
- u32 tmp;
- sscanf(packet + 6 + 2*i, "%2x", &tmp);
+ uint32_t tmp;
+ sscanf(packet + 6 + 2*i, "%2" SCNx32 , &tmp);
cmd[i] = tmp;
}
cmd[(packet_size - 6)/2] = 0x0;
/* We want to print all debug output to GDB connection */
log_add_callback(gdb_log_callback, connection);
target_call_timer_callbacks_now();
+ /* some commands need to know the GDB connection, make note of current
+ * GDB connection. */
+ current_gdb_connection = gdb_connection;
command_run_line(cmd_ctx, cmd);
+ current_gdb_connection = NULL;
target_call_timer_callbacks_now();
log_remove_callback(gdb_log_callback, connection);
free(cmd);
int retval;
char gdb_reply[10];
char *separator;
- u32 checksum;
- u32 addr = 0;
- u32 len = 0;
+ uint32_t checksum;
+ uint32_t addr = 0;
+ uint32_t len = 0;
/* skip command character */
packet += 5;
if (retval == ERROR_OK)
{
- snprintf(gdb_reply, 10, "C%8.8x", checksum);
+ snprintf(gdb_reply, 10, "C%8.8" PRIx32 "", checksum);
gdb_put_packet(connection, gdb_reply, 9);
}
else
int size = 0;
xml_printf(&retval, &buffer, &pos, &size,
- "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-",
- (GDB_BUFFER_SIZE - 1), gdb_use_memory_map == 1 ? '+' : '-');
+ "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
+ (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-');
if (retval != ERROR_OK)
{
return ERROR_OK;
}
- else if (strstr(packet, "qXfer:memory-map:read::"))
+ else if (strstr(packet, "qXfer:memory-map:read::") && (flash_get_bank_count() > 0))
{
/* We get away with only specifying flash here. Regions that are not
* specified are treated as if we provided no memory map(if not we
xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
+ /*
+ 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++)
+
+ 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);
+
+ uint32_t 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 */
"<property name=\"blocksize\">0x%x</property>\n" \
"</memory>\n", \
p->base, p->size, blocksize);
+ 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");
}
xml_printf(&retval, &xml, &pos, &size, \
- "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
+ "l < target version=\"1.0\">\n < architecture > arm</architecture>\n</target>\n");
if (retval != ERROR_OK)
{
free(xml);
return ERROR_OK;
}
+ else if (strstr(packet, "QStartNoAckMode"))
+ {
+ gdb_connection->noack_mode = 1;
+ gdb_put_packet(connection, "OK", 2);
+ return ERROR_OK;
+ }
gdb_put_packet(connection, "", 0);
return ERROR_OK;
flash_set_dirty();
/* perform any target specific operations before the erase */
- target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_PROGRAM);
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_START);
+ result = flash_erase_address_range(gdb_service->target, addr, length);
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_END);
/* perform erase */
- if ((result = flash_erase_address_range(gdb_service->target, addr, length)) != ERROR_OK)
+ if (result != ERROR_OK)
{
/* GDB doesn't evaluate the actual error number returned,
* treat a failed erase as an I/O error
if (strstr(packet, "vFlashWrite:"))
{
+ int retval;
unsigned long addr;
unsigned long length;
char *parse = packet + 12;
}
/* create new section with content from packet buffer */
- image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (u8*)parse);
+ if ((retval = image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (uint8_t*)parse)) != ERROR_OK)
+ {
+ return retval;
+ }
gdb_put_packet(connection, "OK", 2);
if (!strcmp(packet, "vFlashDone"))
{
- u32 written;
+ uint32_t written;
/* process the flashing buffer. No need to erase as GDB
* always issues a vFlashErase first. */
- if ((result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0)) != ERROR_OK)
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_START);
+ result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0);
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_END);
+ if (result != ERROR_OK)
{
if (result == ERROR_FLASH_DST_OUT_OF_BANK)
gdb_put_packet(connection, "E.memtype", 9);
}
else
{
- LOG_DEBUG("wrote %u bytes from vFlash image to flash", written);
+ LOG_DEBUG("wrote %u bytes from vFlash image to flash", (unsigned)written);
gdb_put_packet(connection, "OK", 2);
}
int gdb_detach(connection_t *connection, target_t *target)
{
- switch( detach_mode )
- {
- case GDB_DETACH_RESUME:
- target_resume(target, 1, 0, 1, 0);
- break;
-
- case GDB_DETACH_RESET:
- target_process_reset(connection->cmd_ctx);
- break;
-
- case GDB_DETACH_HALT:
- target_halt(target);
- break;
-
- case GDB_DETACH_NOTHING:
- break;
- }
+ gdb_service_t *gdb_service = connection->service->priv;
- gdb_put_packet(connection, "OK", 2);
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH);
- return ERROR_OK;
+ return gdb_put_packet(connection, "OK", 2);
}
-static void gdb_log_callback(void *priv, const char *file, int line,
+static void gdb_log_callback(void *priv, const char *file, unsigned line,
const char *function, const char *string)
{
connection_t *connection = priv;
gdb_output_con(connection, string);
}
+/* Do not allocate this on the stack */
+char gdb_packet_buffer[GDB_BUFFER_SIZE];
+
+static void gdb_sig_halted(connection_t *connection)
+{
+ char sig_reply[4];
+ snprintf(sig_reply, 4, "T%2.2x", 2);
+ gdb_put_packet(connection, sig_reply, 3);
+
+}
+
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;
- LOG_DEBUG("received packet: '%s'", packet);
+ if (LOG_LEVEL_IS(LOG_LVL_DEBUG)) {
+ if (packet[0] == 'X') {
+ // binary packets spew junk into the debug log stream
+ char buf[ 50 ];
+ int x;
+ for (x = 0 ; (x < 49) && (packet[x] != ':') ; x++) {
+ buf[x] = packet[x];
+ }
+ buf[x] = 0;
+ LOG_DEBUG("received packet: '%s:<binary-data>'", buf);
+ } else {
+ LOG_DEBUG("received packet: '%s'", packet);
+ }
+ }
if (packet_size > 0)
{
gdb_put_packet(connection, NULL, 0);
break;
case 'q':
+ case 'Q':
retval = gdb_query_packet(connection, target, packet, packet_size);
break;
case 'g':
case 'c':
case 's':
{
- /* We're running/stepping, in which case we can
- * forward log output until the target is halted */
+ int retval = ERROR_OK;
+
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);
+
+ bool nostep = false;
+ if (target->state == TARGET_RUNNING)
+ {
+ LOG_WARNING("The target is already running. Halt target before stepi/continue.");
+ retval = target_halt(target);
+ if (retval == ERROR_OK)
+ retval = target_wait_state(target, TARGET_HALTED, 100);
+ } else if (target->state != TARGET_HALTED)
+ {
+ 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)
+ {
+ /* Hmm..... when you issue a continue in GDB, then a "stepi" is
+ * sent by GDB first to OpenOCD, thus defeating the check to
+ * make only the single stepping have the sync feature...
+ */
+ nostep = true;
+ LOG_WARNING("stepi ignored. GDB will now fetch the register state from the target.");
+ }
+ gdb_con->sync = false;
+
+ if ((retval!=ERROR_OK) || nostep)
+ {
+ /* Either the target isn't in the halted state, then we can't
+ * step/continue. This might be early setup, etc.
+ *
+ * Or we want to allow GDB to pick up a fresh set of
+ * register values without modifying the target state.
+ *
+ */
+ gdb_sig_halted(connection);
+
+ /* stop forwarding log packets! */
+ log_remove_callback(gdb_log_callback, connection);
+ } else
+ {
+ /* We're running/stepping, in which case we can
+ * forward log output until the target is halted
+ */
+ gdb_con->frontend_state = TARGET_RUNNING;
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_START);
+ int retval = gdb_step_continue_packet(connection, target, packet, packet_size);
+ if (retval != ERROR_OK)
+ {
+ /* we'll never receive a halted condition... issue a false one.. */
+ gdb_frontend_halted(target, connection);
+ }
+ }
}
break;
case 'v':
break;
case 'R':
/* handle extended restart packet */
- target_process_reset(connection->cmd_ctx);
+ breakpoint_clear_target(gdb_service->target);
+ watchpoint_clear_target(gdb_service->target);
+ command_run_linef(connection->cmd_ctx,
+ "ocd_gdb_restart %s",
+ target->cmd_name);
break;
default:
/* ignore unkown packets */
{
if (target->state == TARGET_RUNNING)
{
- target_halt(target);
+ retval = target_halt(target);
+ if (retval != ERROR_OK)
+ {
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
+ }
gdb_con->ctrl_c = 0;
+ } else
+ {
+ LOG_INFO("The target is not running when halt was requested, stopping GDB.");
+ target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
}
}
if (retval == ERROR_SERVER_REMOTE_CLOSED)
return retval;
- /* logging does not propagate the error, yet can set th gdb_con->closed flag */
+ /* logging does not propagate the error, yet can set the 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;
}
-int gdb_init()
+int gdb_init(void)
{
gdb_service_t *gdb_service;
- target_t *target = targets;
- int i = 0;
+ target_t *target = all_targets;
if (!target)
{
return ERROR_OK;
}
- if (gdb_port == 0)
+ if (gdb_port == 0 && server_use_pipes == 0)
{
- LOG_WARNING("no gdb port specified, using default port 3333");
- gdb_port = 3333;
+ LOG_INFO("gdb port disabled");
+ return ERROR_OK;
}
- while (target)
+ if (server_use_pipes)
{
- char service_name[8];
-
- snprintf(service_name, 8, "gdb-%2.2i", i);
+ /* only a single gdb connection when using a pipe */
gdb_service = malloc(sizeof(gdb_service_t));
gdb_service->target = target;
- add_service("gdb", CONNECTION_GDB, gdb_port + i, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service);
+ add_service("gdb", CONNECTION_PIPE, 0, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service);
- LOG_DEBUG("gdb service for target %s at port %i", target->type->name, gdb_port + i);
+ LOG_DEBUG("gdb service for target %s using pipes",
+ target_get_name(target));
+ }
+ else
+ {
+ unsigned short port = gdb_port;
- i++;
- target = target->next;
+ while (target)
+ {
+ gdb_service = malloc(sizeof(gdb_service_t));
+ gdb_service->target = target;
+
+ add_service("gdb", CONNECTION_TCP,
+ port, 1,
+ gdb_new_connection, gdb_input,
+ gdb_connection_closed, gdb_service);
+
+ LOG_DEBUG("gdb service for target %s at TCP port %i",
+ target_get_name(target),
+ port);
+ target = target->next;
+ port++;
+ }
}
return ERROR_OK;
}
-/* daemon configuration command gdb_port */
-int handle_gdb_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_gdb_sync_command)
{
- if (argc == 0)
- return ERROR_OK;
+ if (argc != 0)
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ if (current_gdb_connection == NULL)
+ {
+ command_print(cmd_ctx,
+ "gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
+ return ERROR_FAIL;
+ }
- /* only if the port wasn't overwritten by cmdline */
- if (gdb_port == 0)
- gdb_port = strtoul(args[0], NULL, 0);
+ current_gdb_connection->sync = true;
return ERROR_OK;
}
-int handle_gdb_detach_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+/* daemon configuration command gdb_port */
+COMMAND_HANDLER(handle_gdb_port_command)
{
- if (argc == 1)
- {
- if (strcmp(args[0], "resume") == 0)
- {
- detach_mode = GDB_DETACH_RESUME;
- return ERROR_OK;
- }
- else if (strcmp(args[0], "reset") == 0)
- {
- detach_mode = GDB_DETACH_RESET;
- return ERROR_OK;
- }
- else if (strcmp(args[0], "halt") == 0)
- {
- detach_mode = GDB_DETACH_HALT;
- return ERROR_OK;
- }
- else if (strcmp(args[0], "nothing") == 0)
- {
- detach_mode = GDB_DETACH_NOTHING;
- return ERROR_OK;
- }
- }
-
- LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]);
- return ERROR_OK;
+ return server_port_command(cmd_ctx, cmd, args, argc, &gdb_port);
}
-int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_gdb_memory_map_command)
{
if (argc == 1)
{
gdb_use_memory_map = 0;
return ERROR_OK;
}
+ else
+ LOG_WARNING("invalid gdb_memory_map configuration directive %s", args[0]);
}
- LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
-int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_gdb_flash_program_command)
{
if (argc == 1)
{
gdb_flash_program = 0;
return ERROR_OK;
}
+ else
+ LOG_WARNING("invalid gdb_flash_program configuration directive: %s", args[0]);
}
- LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
-int handle_gdb_report_data_abort_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_gdb_report_data_abort_command)
{
if (argc == 1)
{
gdb_report_data_abort = 0;
return ERROR_OK;
}
+ else
+ LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
+ }
+
+ return ERROR_COMMAND_SYNTAX_ERROR;
+}
+
+/* gdb_breakpoint_override */
+COMMAND_HANDLER(handle_gdb_breakpoint_override_command)
+{
+ if (argc == 0)
+ {
+
+ } else if (argc == 1)
+ {
+ gdb_breakpoint_override = 1;
+ if (strcmp(args[0], "hard") == 0)
+ {
+ gdb_breakpoint_override_type = BKPT_HARD;
+ } else if (strcmp(args[0], "soft") == 0)
+ {
+ gdb_breakpoint_override_type = BKPT_SOFT;
+ } else if (strcmp(args[0], "disable") == 0)
+ {
+ gdb_breakpoint_override = 0;
+ }
+ } else
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+ if (gdb_breakpoint_override)
+ {
+ LOG_USER("force %s breakpoints", (gdb_breakpoint_override_type == BKPT_HARD)?"hard":"soft");
+ } else
+ {
+ LOG_USER("breakpoint type is not overriden");
}
- LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
return ERROR_OK;
}
int gdb_register_commands(command_context_t *command_context)
{
- register_command(command_context, NULL, "gdb_port", handle_gdb_port_command,
- COMMAND_CONFIG, "");
- register_command(command_context, NULL, "gdb_detach", handle_gdb_detach_command,
- COMMAND_CONFIG, "");
- register_command(command_context, NULL, "gdb_memory_map", handle_gdb_memory_map_command,
- COMMAND_CONFIG, "");
- register_command(command_context, NULL, "gdb_flash_program", handle_gdb_flash_program_command,
- COMMAND_CONFIG, "");
- register_command(command_context, NULL, "gdb_report_data_abort", handle_gdb_report_data_abort_command,
- COMMAND_CONFIG, "");
+ register_command(command_context, NULL, "gdb_sync",
+ handle_gdb_sync_command, COMMAND_ANY,
+ "next stepi will return immediately allowing GDB to "
+ "fetch register state without affecting target state");
+ register_command(command_context, NULL, "gdb_port",
+ handle_gdb_port_command, COMMAND_ANY,
+ "daemon configuration command gdb_port");
+ register_command(command_context, NULL, "gdb_memory_map",
+ handle_gdb_memory_map_command, COMMAND_CONFIG,
+ "enable or disable memory map");
+ register_command(command_context, NULL, "gdb_flash_program",
+ handle_gdb_flash_program_command, COMMAND_CONFIG,
+ "enable or disable flash program");
+ register_command(command_context, NULL, "gdb_report_data_abort",
+ handle_gdb_report_data_abort_command, COMMAND_CONFIG,
+ "enable or disable reporting data aborts");
+ register_command(command_context, NULL, "gdb_breakpoint_override",
+ handle_gdb_breakpoint_override_command, COMMAND_EXEC,
+ "hard/soft/disable - force type of breakpoint "
+ "used by gdb 'break' commands.");
return ERROR_OK;
}
Code Review / openocd.git / blobdiff