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- Fixed various error handling when looking for memory leaks 

- Fixed memory leak in gdb_server.c
- pushed "Error:" statements up into fn's that know something about what went wrong
- load_image now fails if target_write_memory() fails
- only issue an asynchronous halt() upon connect of GDB. Synchronous halt/reset
  doesn't really work as what's required to initialize the target might involve a
  special monitor sequence for the target in question
- syntax error handling improved(fewer exit()'s)


git-svn-id: svn://svn.berlios.de/openocd/trunk@482 b42882b7-edfa-0310-969c-e2dbd0fdcd60
__archive__
oharboe 2008-03-10 12:11:07 +00:00
parent 0a34980f2b
commit 0424155dfc
2 changed files with 60 additions and 58 deletions
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35
src/server/gdb_server.c
View File

@ -678,25 +678,23 @@ int gdb_new_connection(connection_t *connection)
/* 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
* or alterantively try to issue a reset.
*
* GDB connection will fail if e.g. register read packets fail,
* otherwise resetting/halting the target could have been left to GDB init
* scripts
/* a gdb session just attached, try to put the target in halt mode.
*
* DANGER!!!!
* We need a synchronous halt, lest connect will fail.
* Also there is no guarantee that poll() will be invoked
* between here and serving the first packet, so the halt()
* statement above is *NOT* sufficient
*
* 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.
*/
if ((retval = gdb_service->target->type->halt(gdb_service->target)) != ERROR_OK)
{
ERROR("error(%d) when trying to halt target, falling back to \"reset\"", retval);
command_run_line(connection->cmd_ctx, "reset");
}
command_run_line(connection->cmd_ctx, "halt");
gdb_service->target->type->halt(gdb_service->target);
/* remove the initial ACK from the incoming buffer */
if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
@ -1182,13 +1180,12 @@ int gdb_write_memory_packet(connection_t *connection, target_t *target, char *pa
}
else
{
if ((retval = gdb_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)

83
src/target/target.c
View File

@ -749,7 +749,7 @@ int target_register_commands(struct command_context_s *cmd_ctx)
register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
register_command(cmd_ctx, NULL, "daemon_startup", handle_daemon_startup_command, COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, "<target> <run time ms>");
register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_ANY, "working_area <target#> <address> <size> <'backup'|'nobackup'> [virtual address]");
register_command(cmd_ctx, NULL, "virt2phys", handle_virt2phys_command, COMMAND_ANY, "virt2phys <virtual address>");
@ -1110,8 +1110,7 @@ int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **a
if (argc < 3)
{
ERROR("target command requires at least three arguments: <type> <endianess> <reset_mode>");
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
/* search for the specified target */
@ -1148,7 +1147,7 @@ int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **a
else
{
ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
/* what to do on a target reset */
@ -1165,7 +1164,7 @@ int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **a
else
{
ERROR("unknown target startup mode %s", args[2]);
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
(*last_target_p)->run_and_halt_time = 1000; /* default 1s */
@ -1212,7 +1211,7 @@ int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **a
if (!found)
{
ERROR("target '%s' not found", args[0]);
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
return ERROR_OK;
@ -1226,15 +1225,14 @@ int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, c
if (argc < 3)
{
ERROR("incomplete target_script command");
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
target = get_target_by_num(strtoul(args[0], NULL, 0));
if (!target)
{
ERROR("target number '%s' not defined", args[0]);
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
if (strcmp(args[1], "reset") == 0)
@ -1264,7 +1262,7 @@ int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, c
else
{
ERROR("unknown event type: '%s", args[1]);
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
return ERROR_OK;
@ -1276,16 +1274,14 @@ int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cm
if (argc < 2)
{
ERROR("incomplete run_and_halt_time command");
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
target = get_target_by_num(strtoul(args[0], NULL, 0));
if (!target)
{
ERROR("target number '%s' not defined", args[0]);
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
target->run_and_halt_time = strtoul(args[1], NULL, 0);
@ -1306,8 +1302,7 @@ int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, ch
if (!target)
{
ERROR("target number '%s' not defined", args[0]);
exit(-1);
return ERROR_COMMAND_SYNTAX_ERROR;
}
target_free_all_working_areas(target);
@ -1898,6 +1893,7 @@ int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char
}
image_size = 0x0;
retval = ERROR_OK;
for (i = 0; i < image.num_sections; i++)
{
buffer = malloc(image.sections[i].size);
@ -1909,13 +1905,14 @@ int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char
if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
{
ERROR("image_read_section failed with error code: %i", retval);
command_print(cmd_ctx, "image reading failed, download aborted");
free(buffer);
image_close(&image);
return ERROR_OK;
break;
}
if ((retval = target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer)) != ERROR_OK)
{
free(buffer);
break;
}
target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
image_size += buf_cnt;
command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
@ -1923,12 +1920,15 @@ int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char
}
duration_stop_measure(&duration, &duration_text);
command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
if (retval==ERROR_OK)
{
command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
}
free(duration_text);
image_close(&image);
return ERROR_OK;
return retval;
}
@ -1939,7 +1939,7 @@ int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char
u32 address;
u32 size;
u8 buffer[560];
int retval;
int retval=ERROR_OK;
duration_t duration;
char *duration_text;
@ -1976,11 +1976,14 @@ int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char
retval = target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
if (retval != ERROR_OK)
{
command_print(cmd_ctx, "Reading memory failed %d", retval);
break;
}
fileio_write(&fileio, this_run_size, buffer, &size_written);
retval = fileio_write(&fileio, this_run_size, buffer, &size_written);
if (retval != ERROR_OK)
{
break;
}
size -= this_run_size;
address += this_run_size;
@ -1989,7 +1992,10 @@ int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char
fileio_close(&fileio);
duration_stop_measure(&duration, &duration_text);
command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
if (retval==ERROR_OK)
{
command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
}
free(duration_text);
return ERROR_OK;
@ -2045,6 +2051,7 @@ int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, ch
}
image_size = 0x0;
retval=ERROR_OK;
for (i = 0; i < image.num_sections; i++)
{
buffer = malloc(image.sections[i].size);
@ -2055,11 +2062,8 @@ int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, ch
}
if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
{
ERROR("image_read_section failed with error code: %i", retval);
command_print(cmd_ctx, "image reading failed, verify aborted");
free(buffer);
image_close(&image);
return ERROR_OK;
break;
}
/* calculate checksum of image */
@ -2069,10 +2073,8 @@ int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, ch
if( retval != ERROR_OK )
{
command_print(cmd_ctx, "could not calculate checksum, verify aborted");
free(buffer);
image_close(&image);
return ERROR_OK;
break;
}
if( checksum != mem_checksum )
@ -2104,8 +2106,8 @@ int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, ch
command_print(cmd_ctx, "Verify operation failed address 0x%08x. Was 0x%02x instead of 0x%02x\n", t + image.sections[i].base_address, data[t], buffer[t]);
free(data);
free(buffer);
image_close(&image);
return ERROR_OK;
retval=ERROR_FAIL;
goto done;
}
}
}
@ -2116,14 +2118,17 @@ int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, ch
free(buffer);
image_size += buf_cnt;
}
done:
duration_stop_measure(&duration, &duration_text);
command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
if (retval==ERROR_OK)
{
command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
}
free(duration_text);
image_close(&image);
return ERROR_OK;
return retval;
}
int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)