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gdb: enable target description support by default 

This enables gdb target description support by default, it will check that
this is supported by the active target.

Change-Id: Iea5a5b94c5e373af30dacb780020b79536caa1e3
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1618
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
__archive__
Spencer Oliver 2013-09-13 09:34:01 +01:00 committed by Andreas Fritiofson
parent 80a94681de
commit c6216201b2
1 changed files with 63 additions and 4 deletions
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67
src/server/gdb_server.c
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@ -122,8 +122,8 @@ static int gdb_report_data_abort;
/* set if we are sending target descriptions to gdb
* via qXfer:features:read packet */
/* disabled by default */
static int gdb_use_target_description;
/* enabled by default */
static int gdb_use_target_description = 1;
/* current processing free-run type, used by file-I/O */
static char gdb_running_type;
@ -2154,6 +2154,50 @@ static int gdb_get_target_description_chunk(struct target *target, char **chunk,
return ERROR_OK;
}
static int gdb_target_description_supported(struct target *target, int *supported)
{
int retval = ERROR_OK;
struct reg **reg_list = NULL;
int reg_list_size = 0;
int feature_list_size = 0;
retval = target_get_gdb_reg_list(target, &reg_list,
&reg_list_size, REG_CLASS_ALL);
if (retval != ERROR_OK) {
LOG_ERROR("get register list failed");
goto error;
}
if (reg_list_size <= 0) {
retval = ERROR_FAIL;
goto error;
}
char **features = NULL;
/* Get a list of available target registers features */
retval = get_reg_features_list(target, &features, &feature_list_size, reg_list, reg_list_size);
if (retval != ERROR_OK) {
LOG_ERROR("Can't get the registers feature list");
goto error;
}
if (supported) {
if (feature_list_size)
*supported = 1;
else
*supported = 0;
}
error:
if (reg_list != NULL)
free(reg_list);
if (features != NULL)
free(features);
return retval;
}
static int gdb_query_packet(struct connection *connection,
char *packet, int packet_size)
{
@ -2218,11 +2262,26 @@ static int gdb_query_packet(struct connection *connection,
}
} else if (strncmp(packet, "qSupported", 10) == 0) {
/* we currently support packet size and qXfer:memory-map:read (if enabled)
* disable qXfer:features:read for the moment */
* qXfer:features:read is supported for some targets */
int retval = ERROR_OK;
char *buffer = NULL;
int pos = 0;
int size = 0;
int gdb_target_desc_supported = 0;
/* we need to test that the target supports target descriptions */
retval = gdb_target_description_supported(target, &gdb_target_desc_supported);
if (retval != ERROR_OK) {
LOG_INFO("Failed detecting Target Description Support, disabling");
gdb_target_desc_supported = 0;
}
/* support may be disabled globally */
if (gdb_use_target_description == 0) {
if (gdb_target_desc_supported)
LOG_WARNING("Target Descriptions Supported, but disabled");
gdb_target_desc_supported = 0;
}
xml_printf(&retval,
&buffer,
@ -2231,7 +2290,7 @@ static int gdb_query_packet(struct connection *connection,
"PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;QStartNoAckMode+",
(GDB_BUFFER_SIZE - 1),
((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
(gdb_use_target_description == 1) ? '+' : '-');
(gdb_target_desc_supported == 1) ? '+' : '-');
if (retval != ERROR_OK) {
gdb_send_error(connection, 01);