+// SPDX-License-Identifier: GPL-2.0-or-later
+
/***************************************************************************
* Copyright (C) 2011 by Broadcom Corporation *
* Evan Hunter - ehunter@broadcom.com *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-
#include "rtos.h"
#include "target/target.h"
#include "helper/log.h"
+#include "helper/binarybuffer.h"
#include "server/gdb_server.h"
+static const struct rtos_type *rtos_types[] = {
+ &threadx_rtos,
+ &freertos_rtos,
+ &ecos_rtos,
+ &linux_rtos,
+ &chibios_rtos,
+ &chromium_ec_rtos,
+ &embkernel_rtos,
+ &mqx_rtos,
+ &ucos_iii_rtos,
+ &nuttx_rtos,
+ &riot_rtos,
+ &zephyr_rtos,
+ &rtkernel_rtos,
+ /* keep this as last, as it always matches with rtos auto */
+ &hwthread_rtos,
+ NULL
+};
-static int64_t current_threadid = -1;
+static int rtos_try_next(struct target *target);
-static void hex_to_str( char* dst, char * hex_src );
-static int str_to_hex( char* hex_dst, char* src );
+int rtos_smp_init(struct target *target)
+{
+ if (target->rtos->type->smp_init)
+ return target->rtos->type->smp_init(target);
+ return ERROR_TARGET_INIT_FAILED;
+}
+static int rtos_target_for_threadid(struct connection *connection, int64_t threadid, struct target **t)
+{
+ struct target *curr = get_target_from_connection(connection);
+ if (t)
+ *t = curr;
-/* RTOSs */
-extern struct rtos_type FreeRTOS_rtos;
-extern struct rtos_type ThreadX_rtos;
-extern struct rtos_type eCos_rtos;
+ return ERROR_OK;
+}
-static struct rtos_type *rtos_types[] =
+static int os_alloc(struct target *target, const struct rtos_type *ostype)
{
- &ThreadX_rtos,
- &FreeRTOS_rtos,
- &eCos_rtos,
- NULL
-};
+ struct rtos *os = target->rtos = calloc(1, sizeof(struct rtos));
+
+ if (!os)
+ return JIM_ERR;
+
+ os->type = ostype;
+ os->current_threadid = -1;
+ os->current_thread = 0;
+ os->symbols = NULL;
+ os->target = target;
+ /* RTOS drivers can override the packet handler in _create(). */
+ os->gdb_thread_packet = rtos_thread_packet;
+ os->gdb_target_for_threadid = rtos_target_for_threadid;
-int rtos_create(Jim_GetOptInfo *goi, struct target * target)
+ return JIM_OK;
+}
+
+static void os_free(struct target *target)
{
- int x;
- char *cp;
-
- if (! goi->isconfigure) {
- if (goi->argc != 0) {
- if (goi->argc != 0) {
- Jim_WrongNumArgs(goi->interp,
- goi->argc, goi->argv,
- "NO PARAMS");
- return JIM_ERR;
- }
+ if (!target->rtos)
+ return;
- Jim_SetResultString(goi->interp,
- target_type_name(target), -1);
- }
+ free(target->rtos->symbols);
+ rtos_free_threadlist(target->rtos);
+ free(target->rtos);
+ target->rtos = NULL;
+}
+
+static int os_alloc_create(struct target *target, const struct rtos_type *ostype)
+{
+ int ret = os_alloc(target, ostype);
+
+ if (ret == JIM_OK) {
+ ret = target->rtos->type->create(target);
+ if (ret != JIM_OK)
+ os_free(target);
}
- if (target->rtos) {
- free((void *)(target->rtos));
+ return ret;
+}
+
+int rtos_create(struct jim_getopt_info *goi, struct target *target)
+{
+ int x;
+ const char *cp;
+ Jim_Obj *res;
+ int e;
+
+ if (!goi->isconfigure && goi->argc != 0) {
+ Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "NO PARAMS");
+ return JIM_ERR;
}
-// e = Jim_GetOpt_String(goi, &cp, NULL);
-// target->rtos = strdup(cp);
- Jim_GetOpt_String(goi, &cp, NULL);
- /* now does target type exist */
+ os_free(target);
+
+ e = jim_getopt_string(goi, &cp, NULL);
+ if (e != JIM_OK)
+ return e;
+
+ if (strcmp(cp, "none") == 0)
+ return JIM_OK;
- if ( 0 == strcmp( cp, "auto") )
- {
- // auto detection of RTOS
+ if (strcmp(cp, "auto") == 0) {
+ /* Auto detect tries to look up all symbols for each RTOS,
+ * and runs the RTOS driver's _detect() function when GDB
+ * finds all symbols for any RTOS. See rtos_qsymbol(). */
target->rtos_auto_detect = true;
- x = 0;
- }
- else
- {
- for (x = 0 ; rtos_types[x] ; x++) {
- if (0 == strcmp(cp, rtos_types[x]->name)) {
- /* found */
- break;
- }
- }
- if (rtos_types[x] == NULL) {
- Jim_SetResultFormatted(goi->interp, "Unknown rtos type %s, try one of ", cp);
- for (x = 0 ; rtos_types[x] ; x++) {
- if (rtos_types[x + 1]) {
- Jim_AppendStrings(goi->interp,
- Jim_GetResult(goi->interp),
- rtos_types[x]->name,
- ", ", NULL);
- } else {
- Jim_AppendStrings(goi->interp,
- Jim_GetResult(goi->interp),
- " or ",
- rtos_types[x]->name,NULL);
- }
- }
- return JIM_ERR;
- }
- }
- /* Create it */
- target->rtos = calloc(1,sizeof(struct rtos));
- target->rtos->type = rtos_types[x];
- target->rtos->current_thread = 0;
- target->rtos->symbols = NULL;
- target->rtos->target = target;
-
- if ( 0 != strcmp( cp, "auto") )
- {
- target->rtos->type->create( target );
+ /* rtos_qsymbol() will iterate over all RTOSes. Allocate
+ * target->rtos here, and set it to the first RTOS type. */
+ return os_alloc(target, rtos_types[0]);
}
- return JIM_OK;
+ for (x = 0; rtos_types[x]; x++)
+ if (strcmp(cp, rtos_types[x]->name) == 0)
+ return os_alloc_create(target, rtos_types[x]);
+
+ Jim_SetResultFormatted(goi->interp, "Unknown RTOS type %s, try one of: ", cp);
+ res = Jim_GetResult(goi->interp);
+ for (x = 0; rtos_types[x]; x++)
+ Jim_AppendStrings(goi->interp, res, rtos_types[x]->name, ", ", NULL);
+ Jim_AppendStrings(goi->interp, res, ", auto or none", NULL);
+
+ return JIM_ERR;
}
+void rtos_destroy(struct target *target)
+{
+ os_free(target);
+}
+int gdb_thread_packet(struct connection *connection, char const *packet, int packet_size)
+{
+ struct target *target = get_target_from_connection(connection);
+ if (!target->rtos)
+ return rtos_thread_packet(connection, packet, packet_size); /* thread not
+ *found*/
+ return target->rtos->gdb_thread_packet(connection, packet, packet_size);
+}
+static struct symbol_table_elem *find_symbol(const struct rtos *os, const char *symbol)
+{
+ struct symbol_table_elem *s;
-int gdb_thread_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
+ for (s = os->symbols; s->symbol_name; s++)
+ if (!strcmp(s->symbol_name, symbol))
+ return s;
+
+ return NULL;
+}
+
+static struct symbol_table_elem *next_symbol(struct rtos *os, char *cur_symbol, uint64_t cur_addr)
{
- if (strstr(packet, "qP"))
- {
- #define TAG_THREADID 1 /* Echo the thread identifier */
- #define TAG_EXISTS 2 /* Is this process defined enough to
- fetch registers and its stack */
- #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
- #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
- #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about */
+ if (!os->symbols)
+ os->type->get_symbol_list_to_lookup(&os->symbols);
- // TODO: need to scanf the mode variable (or it with the tags), and the threadid
+ if (!cur_symbol[0])
+ return &os->symbols[0];
- unsigned long mode;
- threadid_t threadid = 0;
- struct thread_detail* detail;
- sscanf(packet, "qP%8lx%16" SCNx64, &mode, &threadid);
+ struct symbol_table_elem *s = find_symbol(os, cur_symbol);
+ if (!s)
+ return NULL;
+ s->address = cur_addr;
+ s++;
+ return s;
+}
- int found = -1;
+/* rtos_qsymbol() processes and replies to all qSymbol packets from GDB.
+ *
+ * GDB sends a qSymbol:: packet (empty address, empty name) to notify
+ * that it can now answer qSymbol::hexcodedname queries, to look up symbols.
+ *
+ * If the qSymbol packet has no address that means GDB did not find the
+ * symbol, in which case auto-detect will move on to try the next RTOS.
+ *
+ * rtos_qsymbol() then calls the next_symbol() helper function, which
+ * iterates over symbol names for the current RTOS until it finds the
+ * symbol in the received GDB packet, and then returns the next entry
+ * in the list of symbols.
+ *
+ * If GDB replied about the last symbol for the RTOS and the RTOS was
+ * specified explicitly, then no further symbol lookup is done. When
+ * auto-detecting, the RTOS driver _detect() function must return success.
+ *
+ * The symbol is tried twice to handle the -flto case with gcc. The first
+ * attempt uses the symbol as-is, and the second attempt tries the symbol
+ * with ".lto_priv.0" appended to it. We only consider the first static
+ * symbol here from the -flto case. (Each subsequent static symbol with
+ * the same name is exported as .lto_priv.1, .lto_priv.2, etc.)
+ *
+ * rtos_qsymbol() returns 1 if an RTOS has been detected, or 0 otherwise.
+ */
+int rtos_qsymbol(struct connection *connection, char const *packet, int packet_size)
+{
+ int rtos_detected = 0;
+ uint64_t addr = 0;
+ size_t reply_len;
+ char reply[GDB_BUFFER_SIZE + 1], cur_sym[GDB_BUFFER_SIZE / 2 + 1] = ""; /* Extra byte for null-termination */
+ struct symbol_table_elem *next_sym = NULL;
+ struct target *target = get_target_from_connection(connection);
+ struct rtos *os = target->rtos;
+
+ reply_len = sprintf(reply, "OK");
+
+ if (!os)
+ goto done;
+
+ /* Decode any symbol name in the packet*/
+ size_t len = unhexify((uint8_t *)cur_sym, strchr(packet + 8, ':') + 1, strlen(strchr(packet + 8, ':') + 1));
+ cur_sym[len] = 0;
+
+ const char no_suffix[] = "";
+ const char lto_suffix[] = ".lto_priv.0";
+ const size_t lto_suffix_len = strlen(lto_suffix);
+
+ const char *cur_suffix;
+ const char *next_suffix;
+
+ /* Detect what suffix was used during the previous symbol lookup attempt, and
+ * speculatively determine the next suffix (only used for the unknown address case) */
+ if (len > lto_suffix_len && !strcmp(cur_sym + len - lto_suffix_len, lto_suffix)) {
+ /* Trim the suffix from cur_sym for comparison purposes below */
+ cur_sym[len - lto_suffix_len] = '\0';
+ cur_suffix = lto_suffix;
+ next_suffix = NULL;
+ } else {
+ cur_suffix = no_suffix;
+ next_suffix = lto_suffix;
+ }
- if ((target->rtos != NULL) && (target->rtos->thread_details
- != NULL)) {
- int thread_num;
- for (thread_num = 0; thread_num
- < target->rtos->thread_count; thread_num++) {
- if (target->rtos->thread_details[thread_num].threadid
- == threadid) {
- if (target->rtos->thread_details[thread_num].exists) {
- found = thread_num;
- }
+ if ((strcmp(packet, "qSymbol::") != 0) && /* GDB is not offering symbol lookup for the first time */
+ (!sscanf(packet, "qSymbol:%" SCNx64 ":", &addr))) { /* GDB did not find an address for a symbol */
+
+ /* GDB could not find an address for the previous symbol */
+ struct symbol_table_elem *sym = find_symbol(os, cur_sym);
+
+ if (next_suffix) {
+ next_sym = sym;
+ } else if (sym && !sym->optional) { /* the symbol is mandatory for this RTOS */
+ 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)) {
+ LOG_WARNING("No RTOS could be auto-detected!");
+ goto done;
}
+
+ /* Next RTOS selected - invalidate current symbol */
+ cur_sym[0] = '\x00';
}
}
- if (found == -1) {
- gdb_put_packet(connection, "E01", 3); // thread not found
- return ERROR_OK;
- }
+ }
- detail = &target->rtos->thread_details[found];
+ LOG_DEBUG("RTOS: Address of symbol '%s%s' is 0x%" PRIx64, cur_sym, cur_suffix, addr);
- if ( detail->display_str != NULL )
- {
- mode &= TAG_DISPLAY;
- }
- if ( detail->thread_name_str != NULL )
- {
- mode &= TAG_THREADNAME;
- }
- if ( detail->extra_info_str != NULL )
- {
- mode &= TAG_MOREDISPLAY;
+ if (!next_sym) {
+ next_sym = next_symbol(os, cur_sym, addr);
+ next_suffix = no_suffix;
+ }
+
+ /* Should never happen unless the debugger misbehaves */
+ if (!next_sym) {
+ LOG_WARNING("RTOS: Debugger sent us qSymbol with '%s%s' that we did not ask for", cur_sym, cur_suffix);
+ goto done;
+ }
+
+ if (!next_sym->symbol_name) {
+ /* No more symbols need looking up */
+
+ if (!target->rtos_auto_detect) {
+ rtos_detected = 1;
+ goto done;
}
+ if (os->type->detect_rtos(target)) {
+ LOG_INFO("Auto-detected RTOS: %s", os->type->name);
+ rtos_detected = 1;
+ goto done;
+ } else {
+ LOG_WARNING("No RTOS could be auto-detected!");
+ goto done;
+ }
+ }
- mode &= TAG_THREADID | TAG_EXISTS;
+ assert(next_suffix);
- char thread_str[1000];
+ reply_len = 8; /* snprintf(..., "qSymbol:") */
+ reply_len += 2 * strlen(next_sym->symbol_name); /* hexify(..., next_sym->symbol_name, ...) */
+ reply_len += 2 * strlen(next_suffix); /* hexify(..., next_suffix, ...) */
+ reply_len += 1; /* Terminating NUL */
+ if (reply_len > sizeof(reply)) {
+ LOG_ERROR("ERROR: RTOS symbol '%s%s' name is too long for GDB!", next_sym->symbol_name, next_suffix);
+ goto done;
+ }
- sprintf(thread_str, "%08lx", mode);
- sprintf(thread_str, "%016" PRIx64, threadid);
+ LOG_DEBUG("RTOS: Requesting symbol lookup of '%s%s' from the debugger", next_sym->symbol_name, next_suffix);
+ reply_len = snprintf(reply, sizeof(reply), "qSymbol:");
+ reply_len += hexify(reply + reply_len,
+ (const uint8_t *)next_sym->symbol_name, strlen(next_sym->symbol_name),
+ sizeof(reply) - reply_len);
+ reply_len += hexify(reply + reply_len,
+ (const uint8_t *)next_suffix, strlen(next_suffix),
+ sizeof(reply) - reply_len);
- if (mode & TAG_THREADID) {
- sprintf(thread_str, "%08" PRIx32 "10%016" PRIx64, TAG_THREADID, threadid);
- }
- if (mode & TAG_EXISTS) {
- sprintf(thread_str, "%08" PRIx32 "08%08" PRIx32, TAG_EXISTS, (detail->exists==true)?1:0);
- }
- if (mode & TAG_DISPLAY) {
- sprintf(thread_str, "%08" PRIx32 "%02x%s", TAG_DISPLAY, (unsigned char)strlen(detail->display_str), detail->display_str );
- }
- if (mode & TAG_MOREDISPLAY) {
- sprintf(thread_str, "%08" PRIx32 "%02x%s", TAG_MOREDISPLAY, (unsigned char)strlen(detail->extra_info_str), detail->extra_info_str );
- }
- if (mode & TAG_THREADNAME) {
- sprintf(thread_str, "%08" PRIx32 "%02x%s", TAG_THREADNAME, (unsigned char)strlen(detail->thread_name_str), detail->thread_name_str );
- }
+done:
+ gdb_put_packet(connection, reply, reply_len);
+ return rtos_detected;
+}
- //gdb_put_packet(connection, tmpstr, sizeof(tmpstr)-1);
- gdb_put_packet(connection, thread_str, strlen(thread_str));
+int rtos_thread_packet(struct connection *connection, char const *packet, int packet_size)
+{
+ struct target *target = get_target_from_connection(connection);
- // gdb_put_packet(connection, "", 0);
- // gdb_put_packet(connection, "OK", 2); // all threads alive
- return ERROR_OK;
- }
- else if (strstr(packet, "qThreadExtraInfo,"))
- {
- if ((target->rtos != NULL) && (target->rtos->thread_details != NULL) && (target->rtos->thread_count != 0))
- {
+ if (strncmp(packet, "qThreadExtraInfo,", 17) == 0) {
+ if ((target->rtos) && (target->rtos->thread_details) &&
+ (target->rtos->thread_count != 0)) {
threadid_t threadid = 0;
int found = -1;
- sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid );
+ sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid);
- if ((target->rtos != NULL) && (target->rtos->thread_details
- != NULL)) {
+ if ((target->rtos) && (target->rtos->thread_details)) {
int thread_num;
- for (thread_num = 0; thread_num
- < target->rtos->thread_count; thread_num++) {
- if (target->rtos->thread_details[thread_num].threadid
- == threadid) {
- if (target->rtos->thread_details[thread_num].exists) {
+ for (thread_num = 0; thread_num < target->rtos->thread_count; thread_num++) {
+ if (target->rtos->thread_details[thread_num].threadid == threadid) {
+ if (target->rtos->thread_details[thread_num].exists)
found = thread_num;
- }
}
}
}
if (found == -1) {
- gdb_put_packet(connection, "E01", 3); // thread not found
+ gdb_put_packet(connection, "E01", 3); /* thread not found */
return ERROR_OK;
}
- struct thread_detail* detail = &target->rtos->thread_details[found];
+ struct thread_detail *detail = &target->rtos->thread_details[found];
int str_size = 0;
- if ( detail->display_str != NULL )
- {
- str_size += strlen(detail->display_str);
- }
- if ( detail->thread_name_str != NULL )
- {
+ if (detail->thread_name_str)
str_size += strlen(detail->thread_name_str);
- }
- if ( detail->extra_info_str != NULL )
- {
+ if (detail->extra_info_str)
str_size += strlen(detail->extra_info_str);
- }
- char * tmp_str = (char*) malloc( str_size + 7 );
- char* tmp_str_ptr = tmp_str;
+ char *tmp_str = calloc(str_size + 9, sizeof(char));
+ char *tmp_str_ptr = tmp_str;
- if ( detail->display_str != NULL )
- {
- tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->display_str );
- }
- if ( detail->thread_name_str != NULL )
- {
- if ( tmp_str_ptr != tmp_str )
- {
- tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
- }
- tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->thread_name_str );
- }
- if ( detail->extra_info_str != NULL )
- {
- if ( tmp_str_ptr != tmp_str )
- {
- tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
- }
- tmp_str_ptr += sprintf( tmp_str_ptr, " : %s", detail->extra_info_str );
+ if (detail->thread_name_str)
+ tmp_str_ptr += sprintf(tmp_str_ptr, "Name: %s", detail->thread_name_str);
+ if (detail->extra_info_str) {
+ if (tmp_str_ptr != tmp_str)
+ tmp_str_ptr += sprintf(tmp_str_ptr, ", ");
+ tmp_str_ptr += sprintf(tmp_str_ptr, "%s", detail->extra_info_str);
}
- char * hex_str = (char*) malloc( strlen(tmp_str)*2 +1 );
- str_to_hex( hex_str, tmp_str );
+ assert(strlen(tmp_str) ==
+ (size_t) (tmp_str_ptr - tmp_str));
+
+ char *hex_str = malloc(strlen(tmp_str) * 2 + 1);
+ size_t pkt_len = hexify(hex_str, (const uint8_t *)tmp_str,
+ strlen(tmp_str), strlen(tmp_str) * 2 + 1);
- gdb_put_packet(connection, hex_str, strlen(hex_str));
+ gdb_put_packet(connection, hex_str, pkt_len);
free(hex_str);
free(tmp_str);
return ERROR_OK;
}
gdb_put_packet(connection, "", 0);
return ERROR_OK;
- }
- else if (strstr(packet, "qSymbol"))
- {
- if ( target->rtos != NULL )
- {
- int next_symbol_num = -1;
- if (target->rtos->symbols == NULL)
- {
- target->rtos->type->get_symbol_list_to_lookup( &target->rtos->symbols );
- }
- if (0 == strcmp( "qSymbol::", packet ) )
- {
- // first query -
- next_symbol_num = 0;
- }
- else
- {
- int64_t value = 0;
- char * hex_name_str = malloc( strlen(packet));
- char * name_str;
- int symbol_num;
-
- char* found = strstr( packet, "qSymbol::" );
- int numconv;
- if (0 == found )
- {
- numconv =sscanf(packet, "qSymbol:%" SCNx64 ":%s", &value, hex_name_str);
- }
- else
- {
- // No value returned by GDB - symbol was not found
- numconv =sscanf(packet, "qSymbol::%s", hex_name_str);
- }
- name_str = (char*) malloc( 1+ strlen(hex_name_str) / 2 );
-
- hex_to_str( name_str, hex_name_str );
-
-
- symbol_num = 0;
- while ( ( target->rtos->symbols[ symbol_num ].symbol_name != NULL ) && ( 0 != strcmp( target->rtos->symbols[ symbol_num ].symbol_name, name_str ) ) )
- {
- symbol_num++;
- }
-
-
- if ( target->rtos->symbols[ symbol_num ].symbol_name == NULL )
- {
- LOG_OUTPUT("ERROR: unknown symbol\r\n");
- gdb_put_packet(connection, "OK", 2);
- return ERROR_OK;
- }
-
- target->rtos->symbols[ symbol_num ].address = value;
-
- next_symbol_num = symbol_num+1;
- free( hex_name_str );
- free( name_str );
-
- }
-
- int symbols_done = 0;
- if ( target->rtos->symbols[ next_symbol_num ].symbol_name == NULL )
- {
- if ( ( target->rtos_auto_detect == false ) ||
- ( 1 == target->rtos->type->detect_rtos( target ) ) )
- {
- // Found correct RTOS or not autodetecting
- if ( target->rtos_auto_detect == true )
- {
- LOG_OUTPUT( "Auto-detected RTOS: %s\r\n",target->rtos->type->name );
- }
- symbols_done = 1;
- }
- else
- {
- // Auto detecting RTOS and currently not found
- if( 1 != rtos_try_next( target ) )
- {
- // No more RTOS's to try
- symbols_done = 1;
- }
- else
- {
- next_symbol_num = 0;
- target->rtos->type->get_symbol_list_to_lookup( &target->rtos->symbols );
- }
-
- }
- }
-
-
- if ( symbols_done == 1 )
- {
+ } else if (strncmp(packet, "qSymbol", 7) == 0) {
+ if (rtos_qsymbol(connection, packet, packet_size) == 1) {
+ if (target->rtos_auto_detect == true) {
target->rtos_auto_detect = false;
- target->rtos->type->create( target );
- target->rtos->type->update_threads(target->rtos);
- // No more symbols needed
- gdb_put_packet(connection, "OK", 2);
- return ERROR_OK;
-
+ target->rtos->type->create(target);
}
- else
- {
- char* symname = target->rtos->symbols[ next_symbol_num ].symbol_name;
- char qsymstr[] = "qSymbol:";
- char * opstring = (char*)malloc(sizeof(qsymstr)+strlen(symname)*2+1);
- char * posptr = opstring;
- posptr += sprintf( posptr, "%s", qsymstr );
- str_to_hex( posptr, symname );
- gdb_put_packet(connection, opstring, strlen(opstring));
- free(opstring);
- return ERROR_OK;
- }
-
+ target->rtos->type->update_threads(target->rtos);
}
- gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
- }
- else if (strstr(packet, "qfThreadInfo"))
- {
+ } else if (strncmp(packet, "qfThreadInfo", 12) == 0) {
int i;
- if ( ( target->rtos != NULL ) && ( target->rtos->thread_count != 0 ) )
- {
-
- char* out_str = (char*) malloc(17 * target->rtos->thread_count + 5);
- char* tmp_str = out_str;
- tmp_str += sprintf(tmp_str, "m");
- for (i = 0; i < target->rtos->thread_count; i++) {
- if (i != 0) {
- tmp_str += sprintf(tmp_str, ",");
+ if (target->rtos) {
+ if (target->rtos->thread_count == 0) {
+ gdb_put_packet(connection, "l", 1);
+ } else {
+ /*thread id are 16 char +1 for ',' */
+ char *out_str = malloc(17 * target->rtos->thread_count + 1);
+ char *tmp_str = out_str;
+ for (i = 0; i < target->rtos->thread_count; i++) {
+ tmp_str += sprintf(tmp_str, "%c%016" PRIx64, i == 0 ? 'm' : ',',
+ target->rtos->thread_details[i].threadid);
}
- tmp_str += sprintf(tmp_str, "%016" PRIx64,
- target->rtos->thread_details[i].threadid);
+ gdb_put_packet(connection, out_str, strlen(out_str));
+ free(out_str);
}
- tmp_str[0] = 0;
- gdb_put_packet(connection, out_str, strlen(out_str));
- }
- else
- {
- gdb_put_packet(connection, "", 0);
- }
+ } else
+ gdb_put_packet(connection, "l", 1);
return ERROR_OK;
- }
- else if (strstr(packet, "qsThreadInfo"))
- {
+ } else if (strncmp(packet, "qsThreadInfo", 12) == 0) {
gdb_put_packet(connection, "l", 1);
return ERROR_OK;
- }
- else if (strstr(packet, "qAttached"))
- {
+ } else if (strncmp(packet, "qAttached", 9) == 0) {
gdb_put_packet(connection, "1", 1);
return ERROR_OK;
- }
- else if (strstr(packet, "qOffsets"))
- {
+ } else if (strncmp(packet, "qOffsets", 8) == 0) {
char offsets[] = "Text=0;Data=0;Bss=0";
gdb_put_packet(connection, offsets, sizeof(offsets)-1);
return ERROR_OK;
- }
- else if (strstr(packet, "qC"))
- {
- gdb_put_packet(connection, "QC0", 3);
+ } else if (strncmp(packet, "qCRC:", 5) == 0) {
+ /* make sure we check this before "qC" packet below
+ * otherwise it gets incorrectly handled */
+ return GDB_THREAD_PACKET_NOT_CONSUMED;
+ } else if (strncmp(packet, "qC", 2) == 0) {
+ if (target->rtos) {
+ char buffer[19];
+ int size;
+ size = snprintf(buffer, 19, "QC%016" PRIx64, target->rtos->current_thread);
+ gdb_put_packet(connection, buffer, size);
+ } else
+ gdb_put_packet(connection, "QC0", 3);
return ERROR_OK;
- }
- else if ( packet[0] == 'T' ) // Is thread alive?
- {
+ } else if (packet[0] == 'T') { /* Is thread alive? */
threadid_t threadid;
int found = -1;
sscanf(packet, "T%" SCNx64, &threadid);
- if ((target->rtos != NULL) && (target->rtos->thread_details
- != NULL)) {
+ if ((target->rtos) && (target->rtos->thread_details)) {
int thread_num;
- for (thread_num = 0; thread_num
- < target->rtos->thread_count; thread_num++) {
- if (target->rtos->thread_details[thread_num].threadid
- == threadid) {
- if (target->rtos->thread_details[thread_num].exists) {
+ for (thread_num = 0; thread_num < target->rtos->thread_count; thread_num++) {
+ if (target->rtos->thread_details[thread_num].threadid == threadid) {
+ if (target->rtos->thread_details[thread_num].exists)
found = thread_num;
- }
}
}
}
- if (found != -1) {
- gdb_put_packet(connection, "OK", 2); // thread alive
- } else {
- gdb_put_packet(connection, "E01", 3); // thread not found
- }
- }
- else if ( packet[0] == 'H') // Set current thread ( 'c' for step and continue, 'g' for all other operations )
- {
- if (packet[1] == 'g')
- {
- sscanf(packet, "Hg%16" SCNx64, ¤t_threadid);
+ if (found != -1)
+ gdb_put_packet(connection, "OK", 2); /* thread alive */
+ else
+ gdb_put_packet(connection, "E01", 3); /* thread not found */
+ return ERROR_OK;
+ } else if (packet[0] == 'H') { /* Set current thread ( 'c' for step and continue, 'g' for
+ * all other operations ) */
+ if ((packet[1] == 'g') && (target->rtos)) {
+ threadid_t threadid;
+ sscanf(packet, "Hg%16" SCNx64, &threadid);
+ LOG_DEBUG("RTOS: GDB requested to set current thread to 0x%" PRIx64, threadid);
+ /* threadid of 0 indicates target should choose */
+ if (threadid == 0)
+ target->rtos->current_threadid = target->rtos->current_thread;
+ else
+ target->rtos->current_threadid = threadid;
}
gdb_put_packet(connection, "OK", 2);
+ return ERROR_OK;
}
return GDB_THREAD_PACKET_NOT_CONSUMED;
}
-int rtos_get_gdb_reg_list(struct connection *connection, struct target *target, struct reg **reg_list[], int *reg_list_size)
+static int rtos_put_gdb_reg_list(struct connection *connection,
+ struct rtos_reg *reg_list, int num_regs)
{
- if ( ( target->rtos != NULL ) &&
- ( current_threadid != -1 ) &&
- ( current_threadid != 0 ) &&
- ( current_threadid != target->rtos->current_thread ) )
- {
- char * hex_reg_list;
- target->rtos->type->get_thread_reg_list( target->rtos, current_threadid, &hex_reg_list );
-
- if ( hex_reg_list != NULL )
- {
- gdb_put_packet(connection, hex_reg_list, strlen(hex_reg_list));
- free(hex_reg_list);
- return ERROR_OK;
+ size_t num_bytes = 1; /* NUL */
+ for (int i = 0; i < num_regs; ++i)
+ num_bytes += DIV_ROUND_UP(reg_list[i].size, 8) * 2;
+
+ char *hex = malloc(num_bytes);
+ char *hex_p = hex;
+
+ for (int i = 0; i < num_regs; ++i) {
+ size_t count = DIV_ROUND_UP(reg_list[i].size, 8);
+ size_t n = hexify(hex_p, reg_list[i].value, count, num_bytes);
+ hex_p += n;
+ num_bytes -= n;
+ }
+
+ gdb_put_packet(connection, hex, strlen(hex));
+ free(hex);
+
+ return ERROR_OK;
+}
+
+/** Look through all registers to find this register. */
+int rtos_get_gdb_reg(struct connection *connection, int reg_num)
+{
+ struct target *target = get_target_from_connection(connection);
+ int64_t current_threadid = target->rtos->current_threadid;
+ if ((target->rtos) && (current_threadid != -1) &&
+ (current_threadid != 0) &&
+ ((current_threadid != target->rtos->current_thread) ||
+ (target->smp))) { /* in smp several current thread are possible */
+ struct rtos_reg *reg_list;
+ int num_regs;
+
+ LOG_DEBUG("getting register %d for thread 0x%" PRIx64
+ ", target->rtos->current_thread=0x%" PRIx64,
+ reg_num,
+ current_threadid,
+ target->rtos->current_thread);
+
+ int retval;
+ if (target->rtos->type->get_thread_reg) {
+ reg_list = calloc(1, sizeof(*reg_list));
+ num_regs = 1;
+ retval = target->rtos->type->get_thread_reg(target->rtos,
+ current_threadid, reg_num, ®_list[0]);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("RTOS: failed to get register %d", reg_num);
+ return retval;
+ }
+ } else {
+ retval = target->rtos->type->get_thread_reg_list(target->rtos,
+ current_threadid,
+ ®_list,
+ &num_regs);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("RTOS: failed to get register list");
+ return retval;
+ }
}
+
+ for (int i = 0; i < num_regs; ++i) {
+ if (reg_list[i].number == (uint32_t)reg_num) {
+ rtos_put_gdb_reg_list(connection, reg_list + i, 1);
+ free(reg_list);
+ return ERROR_OK;
+ }
+ }
+
+ free(reg_list);
}
return ERROR_FAIL;
}
+/** Return a list of general registers. */
+int rtos_get_gdb_reg_list(struct connection *connection)
+{
+ struct target *target = get_target_from_connection(connection);
+ int64_t current_threadid = target->rtos->current_threadid;
+ if ((target->rtos) && (current_threadid != -1) &&
+ (current_threadid != 0) &&
+ ((current_threadid != target->rtos->current_thread) ||
+ (target->smp))) { /* in smp several current thread are possible */
+ struct rtos_reg *reg_list;
+ int num_regs;
+
+ LOG_DEBUG("RTOS: getting register list for thread 0x%" PRIx64
+ ", target->rtos->current_thread=0x%" PRIx64 "\r\n",
+ current_threadid,
+ target->rtos->current_thread);
+
+ int retval = target->rtos->type->get_thread_reg_list(target->rtos,
+ current_threadid,
+ ®_list,
+ &num_regs);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("RTOS: failed to get register list");
+ return retval;
+ }
+
+ rtos_put_gdb_reg_list(connection, reg_list, num_regs);
+ free(reg_list);
+ return ERROR_OK;
+ }
+ return ERROR_FAIL;
+}
-int rtos_generic_stack_read( struct target * target, const struct rtos_register_stacking* stacking, int64_t stack_ptr, char ** hex_reg_list )
+int rtos_set_reg(struct connection *connection, int reg_num,
+ uint8_t *reg_value)
+{
+ struct target *target = get_target_from_connection(connection);
+ int64_t current_threadid = target->rtos->current_threadid;
+ if ((target->rtos) &&
+ (target->rtos->type->set_reg) &&
+ (current_threadid != -1) &&
+ (current_threadid != 0)) {
+ return target->rtos->type->set_reg(target->rtos, reg_num, reg_value);
+ }
+ return ERROR_FAIL;
+}
+
+int rtos_generic_stack_read(struct target *target,
+ const struct rtos_register_stacking *stacking,
+ int64_t stack_ptr,
+ struct rtos_reg **reg_list,
+ int *num_regs)
{
- int list_size = 0;
- char * tmp_str_ptr;
- int64_t new_stack_ptr;
- int i;
int retval;
- if ( stack_ptr == 0)
- {
- LOG_OUTPUT("Error: null stack pointer in thread\r\n");
+ if (stack_ptr == 0) {
+ LOG_ERROR("Error: null stack pointer in thread");
return -5;
}
- // Read the stack
- uint8_t * stack_data = (uint8_t*) malloc( stacking->stack_registers_size );
+ /* Read the stack */
+ uint8_t *stack_data = malloc(stacking->stack_registers_size);
uint32_t address = stack_ptr;
- if ( stacking->stack_growth_direction == 1 )
- {
- address -= stacking->stack_registers_size;
- }
- retval = target_read_buffer( target, address, stacking->stack_registers_size, stack_data);
- if ( retval != ERROR_OK )
- {
- LOG_OUTPUT("Error reading stack frame from FreeRTOS thread\r\n");
+ if (stacking->stack_growth_direction == 1)
+ address -= stacking->stack_registers_size;
+ if (stacking->read_stack)
+ retval = stacking->read_stack(target, address, stacking, stack_data);
+ else
+ retval = target_read_buffer(target, address, stacking->stack_registers_size, stack_data);
+ if (retval != ERROR_OK) {
+ free(stack_data);
+ LOG_ERROR("Error reading stack frame from thread");
return retval;
}
-/*
- LOG_OUTPUT("Stack Data :");
- for(i = 0; i < stacking->stack_registers_size; i++ )
- {
- LOG_OUTPUT("%02X",stack_data[i]);
- }
- LOG_OUTPUT("\r\n");
-*/
- for( i = 0; i < stacking->num_output_registers; i++ )
- {
- list_size += stacking->register_offsets[i].width_bits/8;
+ LOG_DEBUG("RTOS: Read stack frame at 0x%" PRIx32, address);
+
+#if 0
+ LOG_OUTPUT("Stack Data :");
+ for (i = 0; i < stacking->stack_registers_size; i++)
+ LOG_OUTPUT("%02X", stack_data[i]);
+ LOG_OUTPUT("\r\n");
+#endif
+
+ target_addr_t new_stack_ptr;
+ if (stacking->calculate_process_stack) {
+ new_stack_ptr = stacking->calculate_process_stack(target,
+ stack_data, stacking, stack_ptr);
+ } else {
+ new_stack_ptr = stack_ptr - stacking->stack_growth_direction *
+ stacking->stack_registers_size;
}
- *hex_reg_list = (char*)malloc( list_size*2 +1 );
- tmp_str_ptr = *hex_reg_list;
- new_stack_ptr = stack_ptr - stacking->stack_growth_direction * stacking->stack_registers_size;
- for( i = 0; i < stacking->num_output_registers; i++ )
- {
- int j;
- for ( j = 0; j < stacking->register_offsets[i].width_bits/8; j++ )
- {
- if ( stacking->register_offsets[i].offset == -1 )
- {
- tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", 0 );
- }
- else if ( stacking->register_offsets[i].offset == -2 )
- {
- tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", ((uint8_t*)&new_stack_ptr)[j] );
- }
- else
- {
- tmp_str_ptr += sprintf( tmp_str_ptr,"%02x", stack_data[ stacking->register_offsets[i].offset + j ] );
- }
- }
+
+ *reg_list = calloc(stacking->num_output_registers, sizeof(struct rtos_reg));
+ *num_regs = stacking->num_output_registers;
+
+ for (int i = 0; i < stacking->num_output_registers; ++i) {
+ (*reg_list)[i].number = stacking->register_offsets[i].number;
+ (*reg_list)[i].size = stacking->register_offsets[i].width_bits;
+
+ int offset = stacking->register_offsets[i].offset;
+ if (offset == -2)
+ buf_cpy(&new_stack_ptr, (*reg_list)[i].value, (*reg_list)[i].size);
+ else if (offset != -1)
+ buf_cpy(stack_data + offset, (*reg_list)[i].value, (*reg_list)[i].size);
}
-// LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list);
+
+ free(stack_data);
+/* LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list); */
return ERROR_OK;
}
-int rtos_try_next( struct target * target )
+static int rtos_try_next(struct target *target)
{
- int x;
+ struct rtos *os = target->rtos;
+ const struct rtos_type **type = rtos_types;
- if ( target->rtos == NULL )
- {
- return -1;
- }
+ if (!os)
+ return 0;
- for (x = 0 ; rtos_types[x] ; x++) {
- if (target->rtos->type == rtos_types[x] ) {
- /* found */
- if ( rtos_types[x+1] != NULL )
- {
- target->rtos->type = rtos_types[x+1];
- if ( target->rtos->symbols != NULL )
- {
- free( target->rtos->symbols );
- }
- return 1;
- }
- else
- {
- // No more rtos types
- return 0;
- }
+ while (*type && os->type != *type)
+ type++;
- }
- }
- return 0;
+ if (!*type || !*(++type))
+ return 0;
+
+ os->type = *type;
+ free(os->symbols);
+ os->symbols = NULL;
+
+ return 1;
}
-static void hex_to_str( char* dst, char * hex_src )
+int rtos_update_threads(struct target *target)
{
- int src_pos = 0;
- int dst_pos = 0;
-
- while ( hex_src[src_pos] != '\x00' )
- {
- char hex_char = hex_src[src_pos];
- char hex_digit_val = (hex_char>='a')?hex_char-'a'+10:(hex_char>='A')?hex_char-'A'+10:hex_char-'0';
- if ( 0 == (src_pos & 0x01) )
- {
- dst[dst_pos] = hex_digit_val;
- dst[dst_pos+1] = 0;
- }
- else
- {
- ((unsigned char*)dst)[dst_pos] <<= 4;
- ((unsigned char*)dst)[dst_pos] += hex_digit_val;
- dst_pos++;
- }
- src_pos++;
- }
-
+ if ((target->rtos) && (target->rtos->type))
+ target->rtos->type->update_threads(target->rtos);
+ return ERROR_OK;
}
-static int str_to_hex( char* hex_dst, char* src )
+void rtos_free_threadlist(struct rtos *rtos)
{
- char * posptr = hex_dst;
- unsigned i;
- for( i = 0; i < strlen(src); i++)
- {
- posptr += sprintf( posptr, "%02x", (unsigned char)src[i] );
+ if (rtos->thread_details) {
+ int j;
+
+ for (j = 0; j < rtos->thread_count; j++) {
+ struct thread_detail *current_thread = &rtos->thread_details[j];
+ free(current_thread->thread_name_str);
+ free(current_thread->extra_info_str);
+ }
+ free(rtos->thread_details);
+ rtos->thread_details = NULL;
+ rtos->thread_count = 0;
+ rtos->current_threadid = -1;
+ rtos->current_thread = 0;
}
- return (posptr-hex_dst);
}
+int rtos_read_buffer(struct target *target, target_addr_t address,
+ uint32_t size, uint8_t *buffer)
+{
+ if (target->rtos->type->read_buffer)
+ return target->rtos->type->read_buffer(target->rtos, address, size, buffer);
+ return ERROR_NOT_IMPLEMENTED;
+}
-int rtos_update_threads( struct target* target )
+int rtos_write_buffer(struct target *target, target_addr_t address,
+ uint32_t size, const uint8_t *buffer)
{
- if ((target->rtos != NULL) && (target->rtos->type != NULL))
- {
- target->rtos->type->update_threads(target->rtos);
- }
- return ERROR_OK;
+ if (target->rtos->type->write_buffer)
+ return target->rtos->type->write_buffer(target->rtos, address, size, buffer);
+ return ERROR_NOT_IMPLEMENTED;
}
Code Review / openocd.git / blobdiff