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gdb: cleanup gdb target description support 

Make sure we free any memory used for gdb_save_tdesc.

Change-Id: Ia226f6134318c8c6b0ac4fa20fe70a570a08d80d
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1619
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
__archive__
Spencer Oliver 2013-09-12 14:49:19 +01:00 committed by Andreas Fritiofson
parent c6216201b2
commit f90e911026
1 changed files with 50 additions and 13 deletions
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63
src/server/gdb_server.c
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@ -60,6 +60,11 @@
* found in most modern embedded processors. * found in most modern embedded processors.
*/ */
struct target_desc_format {
char *tdesc;
uint32_t tdesc_length;
};
/* private connection data for GDB */ /* private connection data for GDB */
struct gdb_connection { struct gdb_connection {
char buffer[GDB_BUFFER_SIZE]; char buffer[GDB_BUFFER_SIZE];
@ -85,6 +90,8 @@ struct gdb_connection {
* normally we reply with a S reply via gdb_last_signal_packet. * normally we reply with a S reply via gdb_last_signal_packet.
* as a side note this behaviour only effects gdb > 6.8 */ * as a side note this behaviour only effects gdb > 6.8 */
bool attached; bool attached;
/* temporarily used for target description support */
struct target_desc_format target_desc;
}; };
#if 0 #if 0
@ -909,6 +916,8 @@ static int gdb_new_connection(struct connection *connection)
gdb_connection->sync = false; gdb_connection->sync = false;
gdb_connection->mem_write_error = false; gdb_connection->mem_write_error = false;
gdb_connection->attached = true; gdb_connection->attached = true;
gdb_connection->target_desc.tdesc = NULL;
gdb_connection->target_desc.tdesc_length = 0;
/* send ACK to GDB for debug request */ /* send ACK to GDB for debug request */
gdb_write(connection, "+", 1); gdb_write(connection, "+", 1);
@ -1967,7 +1976,7 @@ static int gdb_generate_reg_type_description(struct target *target,
/* Get a list of available target registers features. feature_list must /* Get a list of available target registers features. feature_list must
* be freed by caller. * be freed by caller.
*/ */
int get_reg_features_list(struct target *target, char **feature_list[], int *feature_list_size, static int get_reg_features_list(struct target *target, char **feature_list[], int *feature_list_size,
struct reg **reg_list, int reg_list_size) struct reg **reg_list, int reg_list_size)
{ {
int tbl_sz = 0; int tbl_sz = 0;
@ -2118,14 +2127,24 @@ static int gdb_generate_target_description(struct target *target, char **tdesc)
return ERROR_OK; return ERROR_OK;
} }
static int gdb_get_target_description_chunk(struct target *target, char **chunk, static int gdb_get_target_description_chunk(struct target *target, struct target_desc_format *target_desc,
int32_t offset, uint32_t length) char **chunk, int32_t offset, uint32_t length)
{ {
static char *tdesc; if (target_desc == NULL) {
static uint32_t tdesc_length; LOG_ERROR("Unable to Generate Target Description");
return ERROR_FAIL;
}
char *tdesc = target_desc->tdesc;
uint32_t tdesc_length = target_desc->tdesc_length;
if (tdesc == NULL) { if (tdesc == NULL) {
gdb_generate_target_description(target, &tdesc); int retval = gdb_generate_target_description(target, &tdesc);
if (retval != ERROR_OK) {
LOG_ERROR("Unable to Generate Target Description");
return ERROR_FAIL;
}
tdesc_length = strlen(tdesc); tdesc_length = strlen(tdesc);
} }
@ -2137,6 +2156,11 @@ static int gdb_get_target_description_chunk(struct target *target, char **chunk,
transfer_type = 'l'; transfer_type = 'l';
*chunk = malloc(length + 2); *chunk = malloc(length + 2);
if (*chunk == NULL) {
LOG_ERROR("Unable to allocate memory");
return ERROR_FAIL;
}
(*chunk)[0] = transfer_type; (*chunk)[0] = transfer_type;
if (transfer_type == 'm') { if (transfer_type == 'm') {
strncpy((*chunk) + 1, tdesc + offset, length); strncpy((*chunk) + 1, tdesc + offset, length);
@ -2151,6 +2175,9 @@ static int gdb_get_target_description_chunk(struct target *target, char **chunk,
tdesc_length = 0; tdesc_length = 0;
} }
target_desc->tdesc = tdesc;
target_desc->tdesc_length = tdesc_length;
return ERROR_OK; return ERROR_OK;
} }
@ -2325,7 +2352,8 @@ static int gdb_query_packet(struct connection *connection,
* there are *more* chunks to transfer. 'l' for it is the *last* * there are *more* chunks to transfer. 'l' for it is the *last*
* chunk of target description. * chunk of target description.
*/ */
retval = gdb_get_target_description_chunk(target, &xml, offset, length); retval = gdb_get_target_description_chunk(target, &gdb_connection->target_desc,
&xml, offset, length);
if (retval != ERROR_OK) { if (retval != ERROR_OK) {
gdb_error(connection, retval); gdb_error(connection, retval);
return retval; return retval;
@ -2981,14 +3009,22 @@ COMMAND_HANDLER(handle_gdb_target_description_command)
COMMAND_HANDLER(handle_gdb_save_tdesc_command) COMMAND_HANDLER(handle_gdb_save_tdesc_command)
{ {
static char *tdesc; char *tdesc;
static uint32_t tdesc_length; uint32_t tdesc_length;
struct target *target = get_current_target(CMD_CTX); struct target *target = get_current_target(CMD_CTX);
char *tdesc_filename; char *tdesc_filename;
if (tdesc == NULL) { int retval = gdb_generate_target_description(target, &tdesc);
gdb_generate_target_description(target, &tdesc); if (retval != ERROR_OK) {
tdesc_length = strlen(tdesc); LOG_ERROR("Unable to Generate Target Description");
return ERROR_FAIL;
}
tdesc_length = strlen(tdesc);
if (tdesc_length == 0) {
LOG_ERROR("Unable to Generate Target Description");
return ERROR_FAIL;
} }
struct fileio fileio; struct fileio fileio;
@ -2997,7 +3033,7 @@ COMMAND_HANDLER(handle_gdb_save_tdesc_command)
tdesc_filename = malloc(strlen(target_type_name(target)) + 5); tdesc_filename = malloc(strlen(target_type_name(target)) + 5);
sprintf(tdesc_filename, "%s.xml", target_type_name(target)); sprintf(tdesc_filename, "%s.xml", target_type_name(target));
int retval = fileio_open(&fileio, tdesc_filename, FILEIO_WRITE, FILEIO_TEXT); retval = fileio_open(&fileio, tdesc_filename, FILEIO_WRITE, FILEIO_TEXT);
if (retval != ERROR_OK) { if (retval != ERROR_OK) {
LOG_WARNING("Can't open %s for writing", tdesc_filename); LOG_WARNING("Can't open %s for writing", tdesc_filename);
@ -3009,6 +3045,7 @@ COMMAND_HANDLER(handle_gdb_save_tdesc_command)
fileio_close(&fileio); fileio_close(&fileio);
free(tdesc_filename); free(tdesc_filename);
free(tdesc);
if (retval != ERROR_OK) { if (retval != ERROR_OK) {
LOG_WARNING("Error while writing the tdesc file"); LOG_WARNING("Error while writing the tdesc file");