#include "server.h"
#include "log.h"
#include "binarybuffer.h"
+#include "jtag.h"
#include "breakpoints.h"
#include "flash.h"
#include "target_request.h"
-#define __USE_GNU
#include <string.h>
#include <errno.h>
#include <unistd.h>
GDB_DETACH_NOTHING
};
+/* target behaviour on gdb detach */
enum gdb_detach_mode detach_mode = GDB_DETACH_RESUME;
+/* 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;
+
int gdb_last_signal(target_t *target)
{
switch (target->debug_reason)
int gdb_get_char(connection_t *connection, int* next_char)
{
gdb_connection_t *gdb_con = connection->priv;
+
+#ifdef _DEBUG_GDB_IO_
char *debug_buffer;
+#endif
if (gdb_con->buf_cnt-- > 0)
{
break;
case WSAECONNABORTED:
return ERROR_SERVER_REMOTE_CLOSED;
+ case WSAECONNRESET:
+ return ERROR_SERVER_REMOTE_CLOSED;
default:
ERROR("read: %d", errno);
exit(-1);
#endif
}
+#ifdef _DEBUG_GDB_IO_
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);
free(debug_buffer);
+#endif
gdb_con->buf_p = gdb_con->buffer;
gdb_con->buf_cnt--;
if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
return retval;
+#ifdef _DEBUG_GDB_IO_
DEBUG("character: '%c'", character);
+#endif
switch (character)
{
int gdb_output(struct command_context_s *context, char* line)
{
connection_t *connection = context->output_handler_priv;
+ gdb_connection_t *gdb_connection = connection->priv;
+
char *hex_buffer;
int i, bin_size;
+ /* check if output is enabled */
+ if (gdb_connection->output_disable)
+ {
+ return ERROR_OK;
+ }
+
bin_size = strlen(line);
hex_buffer = malloc(bin_size*2 + 4);
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 = fopen(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();
+ }
+
+ return ERROR_OK;
+}
+
int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
{
connection_t *connection = priv;
gdb_connection->frontend_state = TARGET_RUNNING;
}
break;
+ case TARGET_EVENT_GDB_PROGRAM:
+ gdb_program_handler(target, event, connection->cmd_ctx);
+ break;
default:
break;
}
gdb_connection->ctrl_c = 0;
gdb_connection->frontend_state = TARGET_HALTED;
gdb_connection->vflash_image = NULL;
-
+ gdb_connection->output_disable = 0;
+
/* output goes through gdb connection */
command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
return ERROR_OK;
}
+/* print out XML and allocate more space as needed */
+void xml_printf(int *retval, char **xml, int *pos, int *size, const char *fmt, ...)
+{
+ if (*retval != ERROR_OK)
+ {
+ return;
+ }
+ int first = 1;
+
+ for (;;)
+ {
+ if ((*xml == NULL) || (!first))
+ {
+ /* start by 0 to exercise all the code paths.
+ * Need minimum 2 bytes to fit 1 char and 0 terminator. */
+
+ *size = *size * 2 + 2;
+ *xml = realloc(*xml, *size);
+ if (*xml == NULL)
+ {
+ *retval = 1;
+ return;
+ }
+ }
+
+ 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;
+ }
+}
+
+static int decode_xfer_read (char *buf, char **annex, int *ofs, unsigned int *len)
+{
+ char *separator;
+
+ /* Extract and NUL-terminate the annex. */
+ *annex = buf;
+ while (*buf && *buf != ':')
+ buf++;
+ if (*buf == '\0')
+ return -1;
+ *buf++ = 0;
+
+ /* After the read marker and annex, qXfer looks like a
+ * traditional 'm' packet. */
+
+ *ofs = strtoul(buf, &separator, 16);
+
+ if (*separator != ',')
+ return -1;
+
+ *len = strtoul(separator+1, NULL, 16);
+
+ return 0;
+}
+
int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
+ char buffer[GDB_BUFFER_SIZE];
command_context_t *cmd_ctx = connection->cmd_ctx;
-
+
if (strstr(packet, "qRcmd,"))
{
if (packet_size > 6)
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
}
-
- if (strstr(packet, "qCRC:"))
+ else if (strstr(packet, "qCRC:"))
{
if (packet_size > 5)
{
int retval;
- u8 gdb_reply[9];
+ u8 gdb_reply[10];
char *separator;
u32 checksum;
u32 addr = 0;
return ERROR_SERVER_REMOTE_CLOSED;
}
- len = strtoul(separator+1, NULL, 16);
+ len = strtoul(separator + 1, NULL, 16);
retval = target_checksum_memory(target, addr, len, &checksum);
if (retval == ERROR_OK)
{
- snprintf(gdb_reply, 9, "C%2.2x", checksum);
+ snprintf(gdb_reply, 10, "C%8.8x", checksum);
gdb_put_packet(connection, gdb_reply, 9);
}
else
return ERROR_OK;
}
}
+ else if (strstr(packet, "qSupported"))
+ {
+ /* we currently support packet size and qXfer:memory-map:read (if enabled)
+ * disable qXfer:features:read for the moment */
+
+ sprintf(buffer, "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-",
+ (GDB_BUFFER_SIZE - 1), gdb_use_memory_map == 1 ? '+' : '-');
+
+ gdb_put_packet(connection, buffer, strlen(buffer));
+ return ERROR_OK;
+ }
+ else if (strstr(packet, "qXfer:memory-map:read::"))
+ {
+ /* 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
+ * could detect the holes and mark them as RAM).
+ * Normally we only execute this code once, but no big deal if we
+ * have to regenerate it a couple of times. */
+
+ flash_bank_t *p;
+ char *xml = NULL;
+ int size = 0;
+ int pos = 0;
+ int retval = ERROR_OK;
+
+ int offset;
+ int length;
+ char *separator;
+
+ /* skip command character */
+ packet += 23;
+
+ offset = strtoul(packet, &separator, 16);
+ length = strtoul(separator + 1, &separator, 16);
+
+ xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
+
+ int i = 0;
+ for (;;)
+ {
+ p = get_flash_bank_by_num(i);
+ if (p == NULL)
+ break;
+
+ 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, p->size/p->num_sectors);
+ i++;
+ }
+
+ xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
+
+ if (retval != ERROR_OK)
+ {
+ gdb_send_error(connection, retval);
+ return retval;
+ }
+
+ if (offset + length > pos)
+ {
+ length = pos - offset;
+ }
+
+ char *t = malloc(length + 1);
+ t[0] = 'l';
+ memcpy(t + 1, xml + offset, length);
+ gdb_put_packet(connection, t, length + 1);
+
+ free(t);
+ free(xml);
+ return ERROR_OK;
+ }
+ else if (strstr(packet, "qXfer:features:read:"))
+ {
+ char *xml = NULL;
+ int size = 0;
+ int pos = 0;
+ int retval = ERROR_OK;
+
+ int offset;
+ int length;
+ char *annex;
+
+ /* skip command character */
+ packet += 20;
+
+ if (decode_xfer_read( packet, &annex, &offset, &length ) < 0)
+ {
+ gdb_send_error(connection, 01);
+ return ERROR_OK;
+ }
+
+ if (strcmp(annex, "target.xml") != 0)
+ {
+ gdb_send_error(connection, 01);
+ return ERROR_OK;
+ }
+
+ xml_printf(&retval, &xml, &pos, &size, \
+ "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
+
+ if (retval != ERROR_OK)
+ {
+ gdb_send_error(connection, retval);
+ return retval;
+ }
+
+ gdb_put_packet(connection, xml, strlen(xml) + 1);
+
+ free(xml);
+ return ERROR_OK;
+ }
gdb_put_packet(connection, "", 0);
return ERROR_OK;
gdb_service_t *gdb_service = connection->service->priv;
int result;
+ /* if flash programming disabled - send a empty reply */
+
+ if (gdb_flash_program == 0)
+ {
+ gdb_put_packet(connection, "", 0);
+ return ERROR_OK;
+ }
+
if (strstr(packet, "vFlashErase:"))
{
unsigned long addr;
unsigned long length;
+
char *parse = packet + 12;
if (*parse == '\0')
{
ERROR("incomplete vFlashErase packet received, dropping connection");
return ERROR_SERVER_REMOTE_CLOSED;
}
-
+
+ /* disable gdb output while programming */
+ gdb_connection->output_disable = 1;
+
+ /* assume all sectors need erasing - stops any problems
+ * when flash_write is called multiple times */
+ flash_set_dirty();
+
+ /* perform any target specific operations before the erase */
+ target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_PROGRAM);
+
/* perform erase */
if ((result = flash_erase(gdb_service->target, addr, length)) != ERROR_OK)
{
}
else
gdb_put_packet(connection, "OK", 2);
-
+
+ /* reenable gdb output */
+ gdb_connection->output_disable = 0;
+
return ERROR_OK;
}
}
length = packet_size - (parse - packet);
+ /* disable gdb output while programming */
+ gdb_connection->output_disable = 1;
+
/* create a new image if there isn't already one */
if (gdb_connection->vflash_image == NULL)
{
gdb_put_packet(connection, "OK", 2);
+ /* reenable gdb output */
+ gdb_connection->output_disable = 0;
+
return ERROR_OK;
}
u32 written;
char *error_str;
+ /* disable gdb output while programming */
+ gdb_connection->output_disable = 1;
+
/* process the flashing buffer */
- if ((result = flash_image_operation(gdb_service->target, gdb_connection->vflash_image, &written, &error_str, NULL, flash_image_op_write)) != ERROR_OK)
+ if ((result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, &error_str, NULL, 0)) != ERROR_OK)
{
if (result == ERROR_FLASH_DST_OUT_OF_BANK)
gdb_put_packet(connection, "E.memtype", 9);
image_close(gdb_connection->vflash_image);
free(gdb_connection->vflash_image);
gdb_connection->vflash_image = NULL;
-
+
+ /* reenable gdb output */
+ gdb_connection->output_disable = 0;
+
return ERROR_OK;
}
return ERROR_OK;
}
+int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ if (argc == 1)
+ {
+ if (strcmp(args[0], "enable") == 0)
+ {
+ gdb_use_memory_map = 1;
+ return ERROR_OK;
+ }
+ else if (strcmp(args[0], "disable") == 0)
+ {
+ gdb_use_memory_map = 0;
+ return ERROR_OK;
+ }
+ }
+
+ WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
+ return ERROR_OK;
+}
+
+int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ if (argc == 1)
+ {
+ if (strcmp(args[0], "enable") == 0)
+ {
+ gdb_flash_program = 1;
+ return ERROR_OK;
+ }
+ else if (strcmp(args[0], "disable") == 0)
+ {
+ gdb_flash_program = 0;
+ return ERROR_OK;
+ }
+ }
+
+ WARNING("invalid gdb_memory_map 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, "");
return ERROR_OK;
}
Code Review / openocd.git / blobdiff