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rtos: Fix regression preventing use of first RTOS & clean up rtos_qsymbol() 

ThreadX support was not working due to it being first in the list of RTOS - regression.
Auto-detect off, an RTOS was always be marked as successfully detected, even if symbols are not found.
Lines 223-227 were unnecessary as they are done in rtos_try_next()
Added lots of comments
Improved readability by separating: GDB not finding a symbol vs no more symbols being available

Regression caused by patch which was allowed only 52 minutes for review : http://openocd.zylin.com/895

Change-Id: Ib4decb01db595ddb3796837c6d8338ce6b9a91ca
Signed-off-by: Evan Hunter <ehunter@broadcom.com>
Reviewed-on: http://openocd.zylin.com/986
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
This commit is contained in:
Evan Hunter 2013-01-03 16:29:18 +00:00 committed by Freddie Chopin
parent f54a639b28
commit b5c616b90e
1 changed files with 24 additions and 13 deletions
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37
src/rtos/rtos.c
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@ -199,13 +199,30 @@ int rtos_qsymbol(struct connection *connection, char *packet, int packet_size)
if (!os)
goto done;
if (sscanf(packet, "qSymbol:%" SCNx64 ":", &addr))
hex_to_str(cur_sym, strchr(packet + 8, ':') + 1);
else if (target->rtos_auto_detect && !rtos_try_next(target))
goto done;
/* Decode any symbol name in the packet*/
hex_to_str(cur_sym, strchr(packet + 8, ':') + 1);
if ((strcmp(packet, "qSymbol::") != 0) && /* GDB is not offering symbol lookup for the first time */
(!sscanf(packet, "qSymbol:%" SCNx64 ":", &addr))) { /* GDB did not found an address for a symbol */
/* GDB could not find an address for the previous symbol */
if (!target->rtos_auto_detect) {
LOG_WARNING("RTOS %s not detected. (GDB could not find symbol \'%s\')", os->type->name, cur_sym);
goto done;
} else {
/* Autodetecting RTOS - try next RTOS */
if (!rtos_try_next(target))
goto done;
/* Next RTOS selected - invalidate current symbol */
cur_sym[0] = '\x00';
}
}
next_sym = next_symbol(os, cur_sym, addr);
if (!next_sym) {
/* No more symbols need looking up */
if (!target->rtos_auto_detect) {
rtos_detected = 1;
goto done;
@ -215,16 +232,10 @@ int rtos_qsymbol(struct connection *connection, char *packet, int packet_size)
LOG_OUTPUT("Auto-detected RTOS: %s\r\n", os->type->name);
rtos_detected = 1;
goto done;
} else {
LOG_WARNING("No RTOS could be auto-detected!");
goto done;
}
if (!rtos_try_next(target))
goto done;
os->type->get_symbol_list_to_lookup(&os->symbols);
next_sym = os->symbols[0].symbol_name;
if (!next_sym)
goto done;
}
if (8 + (strlen(next_sym) * 2) + 1 > sizeof(reply)) {