1 /* -*- tab-width:8 -*- */
4 Copyright (C) 2011 Peter Zotov <whitequark@whitequark.org>
5 Use of this source code is governed by a BSD-style
6 license that can be found in the LICENSE file.
15 #include <sys/types.h>
19 #include <sys/socket.h>
20 #include <netinet/in.h>
21 #include <arpa/inet.h>
24 #include <stlink-common.h>
26 #include "gdb-remote.h"
28 #define DEFAULT_LOGGING_LEVEL 50
29 #define DEFAULT_GDB_LISTEN_PORT 4242
31 #define STRINGIFY_inner(name) #name
32 #define STRINGIFY(name) STRINGIFY_inner(name)
34 #define FLASH_BASE 0x08000000
36 //Allways update the FLASH_PAGE before each use, by calling stlink_calculate_pagesize
37 #define FLASH_PAGE (sl->flash_pgsz)
39 stlink_t *connected_stlink = NULL;
41 static const char hex[] = "0123456789abcdef";
43 static const char* current_memory_map = NULL;
45 typedef struct _st_state_t {
46 // things from command line, bleh
48 // "/dev/serial/by-id/usb-FTDI_TTL232R-3V3_FTE531X6-if00-port0" is only 58 chars
57 int serve(stlink_t *sl, st_state_t *st);
58 char* make_memory_map(stlink_t *sl);
60 static void cleanup(int signal __attribute__((unused))) {
61 if (connected_stlink) {
62 /* Switch back to mass storage mode before closing. */
63 stlink_run(connected_stlink);
64 stlink_exit_debug_mode(connected_stlink);
65 stlink_close(connected_stlink);
73 int parse_options(int argc, char** argv, st_state_t *st) {
74 static struct option long_options[] = {
75 {"help", no_argument, NULL, 'h'},
76 {"verbose", optional_argument, NULL, 'v'},
77 {"device", required_argument, NULL, 'd'},
78 {"stlink_version", required_argument, NULL, 's'},
79 {"stlinkv1", no_argument, NULL, '1'},
80 {"listen_port", required_argument, NULL, 'p'},
81 {"multi", optional_argument, NULL, 'm'},
82 {"no-reset", optional_argument, NULL, 'n'},
85 const char * help_str = "%s - usage:\n\n"
86 " -h, --help\t\tPrint this help\n"
87 " -vXX, --verbose=XX\tspecify a specific verbosity level (0..99)\n"
88 " -v, --verbose\tspecify generally verbose logging\n"
89 " -d <device>, --device=/dev/stlink2_1\n"
90 "\t\t\tWhere is your stlink device connected?\n"
91 " -s X, --stlink_version=X\n"
92 "\t\t\tChoose what version of stlink to use, (defaults to 2)\n"
93 " -1, --stlinkv1\tForce stlink version 1\n"
94 " -p 4242, --listen_port=1234\n"
95 "\t\t\tSet the gdb server listen port. "
96 "(default port: " STRINGIFY(DEFAULT_GDB_LISTEN_PORT) ")\n"
98 "\t\t\tSet gdb server to extended mode.\n"
99 "\t\t\tst-util will continue listening for connections after disconnect.\n"
101 "\t\t\tDo not reset board on connection.\n"
105 int option_index = 0;
108 while ((c = getopt_long(argc, argv, "hv::d:s:1p:mn", long_options, &option_index)) != -1) {
111 printf("XXXXX Shouldn't really normally come here, only if there's no corresponding option\n");
112 printf("option %s", long_options[option_index].name);
114 printf(" with arg %s", optarg);
119 printf(help_str, argv[0]);
124 st->logging_level = atoi(optarg);
126 st->logging_level = DEFAULT_LOGGING_LEVEL;
130 if (strlen(optarg) > sizeof (st->devicename)) {
131 fprintf(stderr, "device name too long: %zd\n", strlen(optarg));
133 strcpy(st->devicename, optarg);
137 st->stlink_version = 1;
140 sscanf(optarg, "%i", &q);
141 if (q < 0 || q > 2) {
142 fprintf(stderr, "stlink version %d unknown!\n", q);
145 st->stlink_version = q;
148 sscanf(optarg, "%i", &q);
150 fprintf(stderr, "Can't use a negative port to listen on: %d\n", q);
165 printf("non-option ARGV-elements: ");
166 while (optind < argc)
167 printf("%s ", argv[optind++]);
174 int main(int argc, char** argv) {
180 memset(&state, 0, sizeof(state));
182 state.stlink_version = 2;
183 state.logging_level = DEFAULT_LOGGING_LEVEL;
184 state.listen_port = DEFAULT_GDB_LISTEN_PORT;
185 state.reset = 1; /* By default, reset board */
186 parse_options(argc, argv, &state);
187 switch (state.stlink_version) {
189 sl = stlink_open_usb(state.logging_level, 0);
190 if(sl == NULL) return 1;
193 sl = stlink_v1_open(state.logging_level, 0);
194 if(sl == NULL) return 1;
198 connected_stlink = sl;
199 signal(SIGINT, &cleanup);
200 signal(SIGTERM, &cleanup);
206 printf("Chip ID is %08x, Core ID is %08x.\n", sl->chip_id, sl->core_id);
208 voltage = stlink_target_voltage(sl);
210 printf("Target voltage is %d mV.\n", voltage);
215 current_memory_map = make_memory_map(sl);
219 if (WSAStartup(MAKEWORD(2,2),&wsadata) !=0 ) {
229 } while (state.persistent);
236 /* Switch back to mass storage mode before closing. */
237 stlink_exit_debug_mode(sl);
243 static const char* const target_description_F4 =
244 "<?xml version=\"1.0\"?>"
245 "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"
246 "<target version=\"1.0\">"
247 " <architecture>arm</architecture>"
248 " <feature name=\"org.gnu.gdb.arm.m-profile\">"
249 " <reg name=\"r0\" bitsize=\"32\"/>"
250 " <reg name=\"r1\" bitsize=\"32\"/>"
251 " <reg name=\"r2\" bitsize=\"32\"/>"
252 " <reg name=\"r3\" bitsize=\"32\"/>"
253 " <reg name=\"r4\" bitsize=\"32\"/>"
254 " <reg name=\"r5\" bitsize=\"32\"/>"
255 " <reg name=\"r6\" bitsize=\"32\"/>"
256 " <reg name=\"r7\" bitsize=\"32\"/>"
257 " <reg name=\"r8\" bitsize=\"32\"/>"
258 " <reg name=\"r9\" bitsize=\"32\"/>"
259 " <reg name=\"r10\" bitsize=\"32\"/>"
260 " <reg name=\"r11\" bitsize=\"32\"/>"
261 " <reg name=\"r12\" bitsize=\"32\"/>"
262 " <reg name=\"sp\" bitsize=\"32\" type=\"data_ptr\"/>"
263 " <reg name=\"lr\" bitsize=\"32\"/>"
264 " <reg name=\"pc\" bitsize=\"32\" type=\"code_ptr\"/>"
265 " <reg name=\"xpsr\" bitsize=\"32\" regnum=\"25\"/>"
266 " <reg name=\"msp\" bitsize=\"32\" regnum=\"26\" type=\"data_ptr\" group=\"general\" />"
267 " <reg name=\"psp\" bitsize=\"32\" regnum=\"27\" type=\"data_ptr\" group=\"general\" />"
268 " <reg name=\"control\" bitsize=\"8\" regnum=\"28\" type=\"int\" group=\"general\" />"
269 " <reg name=\"faultmask\" bitsize=\"8\" regnum=\"29\" type=\"int\" group=\"general\" />"
270 " <reg name=\"basepri\" bitsize=\"8\" regnum=\"30\" type=\"int\" group=\"general\" />"
271 " <reg name=\"primask\" bitsize=\"8\" regnum=\"31\" type=\"int\" group=\"general\" />"
272 " <reg name=\"s0\" bitsize=\"32\" regnum=\"32\" type=\"float\" group=\"float\" />"
273 " <reg name=\"s1\" bitsize=\"32\" type=\"float\" group=\"float\" />"
274 " <reg name=\"s2\" bitsize=\"32\" type=\"float\" group=\"float\" />"
275 " <reg name=\"s3\" bitsize=\"32\" type=\"float\" group=\"float\" />"
276 " <reg name=\"s4\" bitsize=\"32\" type=\"float\" group=\"float\" />"
277 " <reg name=\"s5\" bitsize=\"32\" type=\"float\" group=\"float\" />"
278 " <reg name=\"s6\" bitsize=\"32\" type=\"float\" group=\"float\" />"
279 " <reg name=\"s7\" bitsize=\"32\" type=\"float\" group=\"float\" />"
280 " <reg name=\"s8\" bitsize=\"32\" type=\"float\" group=\"float\" />"
281 " <reg name=\"s9\" bitsize=\"32\" type=\"float\" group=\"float\" />"
282 " <reg name=\"s10\" bitsize=\"32\" type=\"float\" group=\"float\" />"
283 " <reg name=\"s11\" bitsize=\"32\" type=\"float\" group=\"float\" />"
284 " <reg name=\"s12\" bitsize=\"32\" type=\"float\" group=\"float\" />"
285 " <reg name=\"s13\" bitsize=\"32\" type=\"float\" group=\"float\" />"
286 " <reg name=\"s14\" bitsize=\"32\" type=\"float\" group=\"float\" />"
287 " <reg name=\"s15\" bitsize=\"32\" type=\"float\" group=\"float\" />"
288 " <reg name=\"s16\" bitsize=\"32\" type=\"float\" group=\"float\" />"
289 " <reg name=\"s17\" bitsize=\"32\" type=\"float\" group=\"float\" />"
290 " <reg name=\"s18\" bitsize=\"32\" type=\"float\" group=\"float\" />"
291 " <reg name=\"s19\" bitsize=\"32\" type=\"float\" group=\"float\" />"
292 " <reg name=\"s20\" bitsize=\"32\" type=\"float\" group=\"float\" />"
293 " <reg name=\"s21\" bitsize=\"32\" type=\"float\" group=\"float\" />"
294 " <reg name=\"s22\" bitsize=\"32\" type=\"float\" group=\"float\" />"
295 " <reg name=\"s23\" bitsize=\"32\" type=\"float\" group=\"float\" />"
296 " <reg name=\"s24\" bitsize=\"32\" type=\"float\" group=\"float\" />"
297 " <reg name=\"s25\" bitsize=\"32\" type=\"float\" group=\"float\" />"
298 " <reg name=\"s26\" bitsize=\"32\" type=\"float\" group=\"float\" />"
299 " <reg name=\"s27\" bitsize=\"32\" type=\"float\" group=\"float\" />"
300 " <reg name=\"s28\" bitsize=\"32\" type=\"float\" group=\"float\" />"
301 " <reg name=\"s29\" bitsize=\"32\" type=\"float\" group=\"float\" />"
302 " <reg name=\"s30\" bitsize=\"32\" type=\"float\" group=\"float\" />"
303 " <reg name=\"s31\" bitsize=\"32\" type=\"float\" group=\"float\" />"
304 " <reg name=\"fpscr\" bitsize=\"32\" type=\"int\" group=\"float\" />"
308 static const char* const memory_map_template_F4 =
309 "<?xml version=\"1.0\"?>"
310 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
311 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
313 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x100000\"/>" // code = sram, bootrom or flash; flash is bigger
314 " <memory type=\"ram\" start=\"0x10000000\" length=\"0x10000\"/>" // ccm ram
315 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x20000\"/>" // sram
316 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x10000\">" //Sectors 0..3
317 " <property name=\"blocksize\">0x4000</property>" //16kB
319 " <memory type=\"flash\" start=\"0x08010000\" length=\"0x10000\">" //Sector 4
320 " <property name=\"blocksize\">0x10000</property>" //64kB
322 " <memory type=\"flash\" start=\"0x08020000\" length=\"0x70000\">" //Sectors 5..11
323 " <property name=\"blocksize\">0x20000</property>" //128kB
325 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
326 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
327 " <memory type=\"rom\" start=\"0x1fff0000\" length=\"0x7800\"/>" // bootrom
328 " <memory type=\"rom\" start=\"0x1fffc000\" length=\"0x10\"/>" // option byte area
331 static const char* const memory_map_template =
332 "<?xml version=\"1.0\"?>"
333 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
334 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
336 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%zx\"/>" // code = sram, bootrom or flash; flash is bigger
337 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%zx\"/>" // sram 8k
338 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%zx\">"
339 " <property name=\"blocksize\">0x%zx</property>"
341 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
342 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
343 " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%zx\"/>" // bootrom
344 " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x10\"/>" // option byte area
347 char* make_memory_map(stlink_t *sl) {
348 /* This will be freed in serve() */
349 char* map = malloc(4096);
352 if(sl->chip_id==STM32_CHIPID_F4) {
353 strcpy(map, memory_map_template_F4);
355 snprintf(map, 4096, memory_map_template,
358 sl->flash_size, sl->flash_pgsz,
359 sl->sys_base, sl->sys_size);
366 * DWT_COMP0 0xE0001020
367 * DWT_MASK0 0xE0001024
368 * DWT_FUNCTION0 0xE0001028
369 * DWT_COMP1 0xE0001030
370 * DWT_MASK1 0xE0001034
371 * DWT_FUNCTION1 0xE0001038
372 * DWT_COMP2 0xE0001040
373 * DWT_MASK2 0xE0001044
374 * DWT_FUNCTION2 0xE0001048
375 * DWT_COMP3 0xE0001050
376 * DWT_MASK3 0xE0001054
377 * DWT_FUNCTION3 0xE0001058
380 #define DATA_WATCH_NUM 4
382 enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
384 struct code_hw_watchpoint {
390 struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
392 static void init_data_watchpoints(stlink_t *sl) {
394 printf("init watchpoints\n");
397 // set trcena in debug command to turn on dwt unit
398 stlink_write_debug32(sl, 0xE000EDFC,
399 stlink_read_debug32(sl, 0xE000EDFC) | (1<<24));
401 // make sure all watchpoints are cleared
402 for(int i = 0; i < DATA_WATCH_NUM; i++) {
403 data_watches[i].fun = WATCHDISABLED;
404 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
408 static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
414 // find a free watchpoint
424 if((mask != (uint32_t)-1) && (mask < 16)) {
425 for(i = 0; i < DATA_WATCH_NUM; i++) {
426 // is this an empty slot ?
427 if(data_watches[i].fun == WATCHDISABLED) {
429 printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
432 data_watches[i].fun = wf;
433 data_watches[i].addr = addr;
434 data_watches[i].mask = mask;
436 // insert comparator address
437 stlink_write_debug32(sl, 0xE0001020 + i * 16, addr);
440 stlink_write_debug32(sl, 0xE0001024 + i * 16, mask);
443 stlink_write_debug32(sl, 0xE0001028 + i * 16, wf);
445 // just to make sure the matched bit is clear !
446 stlink_read_debug32(sl, 0xE0001028 + i * 16);
453 printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
458 static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
462 for(i = 0 ; i < DATA_WATCH_NUM; i++) {
463 if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
465 printf("delete watchpoint %d addr %x\n", i, addr);
468 data_watches[i].fun = WATCHDISABLED;
469 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
476 printf("failure: delete watchpoint addr %x\n", addr);
482 #define CODE_BREAK_NUM 6
483 #define CODE_BREAK_LOW 0x01
484 #define CODE_BREAK_HIGH 0x02
486 struct code_hw_breakpoint {
491 struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
493 static void init_code_breakpoints(stlink_t *sl) {
494 memset(sl->q_buf, 0, 4);
495 stlink_write_debug32(sl, CM3_REG_FP_CTRL, 0x03 /*KEY | ENABLE4*/);
496 printf("KARL - should read back as 0x03, not 60 02 00 00\n");
497 stlink_read_debug32(sl, CM3_REG_FP_CTRL);
499 for(int i = 0; i < CODE_BREAK_NUM; i++) {
500 code_breaks[i].type = 0;
501 stlink_write_debug32(sl, CM3_REG_FP_COMP0 + i * 4, 0);
505 static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
506 stm32_addr_t fpb_addr = addr & ~0x3;
507 int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
510 fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
515 for(int i = 0; i < CODE_BREAK_NUM; i++) {
516 if(fpb_addr == code_breaks[i].addr ||
517 (set && code_breaks[i].type == 0)) {
524 if(set) return -1; // Free slot not found
525 else return 0; // Breakpoint is already removed
528 struct code_hw_breakpoint* brk = &code_breaks[id];
530 brk->addr = fpb_addr;
532 if(set) brk->type |= type;
533 else brk->type &= ~type;
537 printf("clearing hw break %d\n", id);
540 stlink_write_debug32(sl, 0xe0002008 + id * 4, 0);
542 uint32_t mask = (brk->addr) | 1 | (brk->type << 30);
545 printf("setting hw break %d at %08x (%d)\n",
546 id, brk->addr, brk->type);
547 printf("reg %08x \n",
551 stlink_write_debug32(sl, 0xe0002008 + id * 4, mask);
563 struct flash_block* next;
566 static struct flash_block* flash_root;
568 static int flash_add_block(stm32_addr_t addr, unsigned length, stlink_t *sl) {
570 if(addr < FLASH_BASE || addr + length > FLASH_BASE + sl->flash_size) {
571 fprintf(stderr, "flash_add_block: incorrect bounds\n");
575 stlink_calculate_pagesize(sl, addr);
576 if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
577 fprintf(stderr, "flash_add_block: unaligned block\n");
581 struct flash_block* new = malloc(sizeof(struct flash_block));
582 new->next = flash_root;
585 new->length = length;
586 new->data = calloc(length, 1);
593 static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
594 unsigned int fit_blocks = 0, fit_length = 0;
596 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
597 /* Block: ------X------Y--------
601 * Block intersects with data, if:
605 unsigned X = fb->addr, Y = fb->addr + fb->length;
606 unsigned a = addr, b = addr + length;
608 // from start of the block
609 unsigned start = (a > X ? a : X) - X;
610 unsigned end = (b > Y ? Y : b) - X;
612 memcpy(fb->data + start, data, end - start);
615 fit_length += end - start;
619 if(fit_blocks == 0) {
620 fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
624 if(fit_length != length) {
625 fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
626 addr, length, fit_length);
627 fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
633 static int flash_go(stlink_t *sl) {
636 // Some kinds of clock settings do not allow writing to flash.
639 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
641 printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
644 unsigned length = fb->length;
645 for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
648 stlink_calculate_pagesize(sl, page);
651 printf("flash_do: page %08x\n", page);
654 if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
655 length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
665 for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
676 int serve(stlink_t *sl, st_state_t *st) {
677 int sock = socket(AF_INET, SOCK_STREAM, 0);
683 unsigned int val = 1;
684 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
686 struct sockaddr_in serv_addr;
687 memset(&serv_addr,0,sizeof(struct sockaddr_in));
688 serv_addr.sin_family = AF_INET;
689 serv_addr.sin_addr.s_addr = INADDR_ANY;
690 serv_addr.sin_port = htons(st->listen_port);
692 if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
697 if(listen(sock, 5) < 0) {
702 printf("Listening at *:%d...\n", st->listen_port);
704 int client = accept(sock, NULL, NULL);
705 //signal (SIGINT, SIG_DFL);
713 stlink_force_debug(sl);
717 init_code_breakpoints(sl);
718 init_data_watchpoints(sl);
720 printf("GDB connected.\n");
723 * To allow resetting the chip from GDB it is required to
724 * emulate attaching and detaching to target.
726 unsigned int attached = 1;
731 int status = gdb_recv_packet(client, &packet);
733 fprintf(stderr, "cannot recv: %d\n", status);
738 printf("recv: %s\n", packet);
746 if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
751 char *separator = strstr(packet, ":"), *params = "";
752 if(separator == NULL) {
753 separator = packet + strlen(packet);
755 params = separator + 1;
758 unsigned queryNameLength = (separator - &packet[1]);
759 char* queryName = calloc(queryNameLength + 1, 1);
760 strncpy(queryName, &packet[1], queryNameLength);
763 printf("query: %s;%s\n", queryName, params);
766 if(!strcmp(queryName, "Supported")) {
767 if(sl->chip_id==STM32_CHIPID_F4) {
768 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+;qXfer:features:read+");
771 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
773 } else if(!strcmp(queryName, "Xfer")) {
774 char *type, *op, *__s_addr, *s_length;
776 char *annex __attribute__((unused));
778 type = strsep(&tok, ":");
779 op = strsep(&tok, ":");
780 annex = strsep(&tok, ":");
781 __s_addr = strsep(&tok, ",");
784 unsigned addr = strtoul(__s_addr, NULL, 16),
785 length = strtoul(s_length, NULL, 16);
788 printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
789 type, op, annex, addr, length);
792 const char* data = NULL;
794 if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
795 data = current_memory_map;
797 if(!strcmp(type, "features") && !strcmp(op, "read"))
798 data = target_description_F4;
801 unsigned data_length = strlen(data);
802 if(addr + length > data_length)
803 length = data_length - addr;
808 reply = calloc(length + 2, 1);
810 strncpy(&reply[1], data, length);
813 } else if(!strncmp(queryName, "Rcmd,",4)) {
814 // Rcmd uses the wrong separator
815 char *separator = strstr(packet, ","), *params = "";
816 if(separator == NULL) {
817 separator = packet + strlen(packet);
819 params = separator + 1;
823 if (!strncmp(params,"726573756d65",12)) {// resume
825 printf("Rcmd: resume\n");
829 reply = strdup("OK");
830 } else if (!strncmp(params,"68616c74",8)) { //halt
831 reply = strdup("OK");
833 stlink_force_debug(sl);
836 printf("Rcmd: halt\n");
838 } else if (!strncmp(params,"6a7461675f7265736574",20)) { //jtag_reset
839 reply = strdup("OK");
841 stlink_jtag_reset(sl, 1);
842 stlink_jtag_reset(sl, 0);
843 stlink_force_debug(sl);
846 printf("Rcmd: jtag_reset\n");
848 } else if (!strncmp(params,"7265736574",10)) { //reset
849 reply = strdup("OK");
851 stlink_force_debug(sl);
853 init_code_breakpoints(sl);
854 init_data_watchpoints(sl);
857 printf("Rcmd: reset\n");
861 printf("Rcmd: %s\n", params);
878 char *cmdName = strtok_r(packet, ":;", ¶ms);
880 cmdName++; // vCommand -> Command
882 if(!strcmp(cmdName, "FlashErase")) {
883 char *__s_addr, *s_length;
886 __s_addr = strsep(&tok, ",");
889 unsigned addr = strtoul(__s_addr, NULL, 16),
890 length = strtoul(s_length, NULL, 16);
893 printf("FlashErase: addr:%08x,len:%04x\n",
897 if(flash_add_block(addr, length, sl) < 0) {
898 reply = strdup("E00");
900 reply = strdup("OK");
902 } else if(!strcmp(cmdName, "FlashWrite")) {
903 char *__s_addr, *data;
906 __s_addr = strsep(&tok, ":");
909 unsigned addr = strtoul(__s_addr, NULL, 16);
910 unsigned data_length = status - (data - packet);
912 // Length of decoded data cannot be more than
913 // encoded, as escapes are removed.
914 // Additional byte is reserved for alignment fix.
915 uint8_t *decoded = calloc(data_length + 1, 1);
916 unsigned dec_index = 0;
917 for(unsigned int i = 0; i < data_length; i++) {
918 if(data[i] == 0x7d) {
920 decoded[dec_index++] = data[i] ^ 0x20;
922 decoded[dec_index++] = data[i];
927 if(dec_index % 2 != 0)
931 printf("binary packet %d -> %d\n", data_length, dec_index);
934 if(flash_populate(addr, decoded, dec_index) < 0) {
935 reply = strdup("E00");
937 reply = strdup("OK");
939 } else if(!strcmp(cmdName, "FlashDone")) {
940 if(flash_go(sl) < 0) {
941 reply = strdup("E00");
943 reply = strdup("OK");
945 } else if(!strcmp(cmdName, "Kill")) {
948 reply = strdup("OK");
961 int status = gdb_check_for_interrupt(client);
963 fprintf(stderr, "cannot check for int: %d\n", status);
968 stlink_force_debug(sl);
973 if(sl->core_stat == STLINK_CORE_HALTED) {
980 reply = strdup("S05"); // TRAP
986 reply = strdup("S05"); // TRAP
991 reply = strdup("S05"); // TRAP
993 /* Stub shall reply OK if not attached. */
994 reply = strdup("OK");
999 stlink_read_all_regs(sl, ®p);
1001 reply = calloc(8 * 16 + 1, 1);
1002 for(int i = 0; i < 16; i++)
1003 sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
1008 unsigned id = strtoul(&packet[1], NULL, 16);
1009 unsigned myreg = 0xDEADDEAD;
1012 stlink_read_reg(sl, id, ®p);
1013 myreg = htonl(regp.r[id]);
1014 } else if(id == 0x19) {
1015 stlink_read_reg(sl, 16, ®p);
1016 myreg = htonl(regp.xpsr);
1017 } else if(id == 0x1A) {
1018 stlink_read_reg(sl, 17, ®p);
1019 myreg = htonl(regp.main_sp);
1020 } else if(id == 0x1B) {
1021 stlink_read_reg(sl, 18, ®p);
1022 myreg = htonl(regp.process_sp);
1023 } else if(id == 0x1C) {
1024 stlink_read_unsupported_reg(sl, id, ®p);
1025 myreg = htonl(regp.control);
1026 } else if(id == 0x1D) {
1027 stlink_read_unsupported_reg(sl, id, ®p);
1028 myreg = htonl(regp.faultmask);
1029 } else if(id == 0x1E) {
1030 stlink_read_unsupported_reg(sl, id, ®p);
1031 myreg = htonl(regp.basepri);
1032 } else if(id == 0x1F) {
1033 stlink_read_unsupported_reg(sl, id, ®p);
1034 myreg = htonl(regp.primask);
1035 } else if(id >= 0x20 && id < 0x40) {
1036 stlink_read_unsupported_reg(sl, id, ®p);
1037 myreg = htonl(regp.s[id-0x20]);
1038 } else if(id == 0x40) {
1039 stlink_read_unsupported_reg(sl, id, ®p);
1040 myreg = htonl(regp.fpscr);
1042 reply = strdup("E00");
1045 reply = calloc(8 + 1, 1);
1046 sprintf(reply, "%08x", myreg);
1052 char* s_reg = &packet[1];
1053 char* s_value = strstr(&packet[1], "=") + 1;
1055 unsigned reg = strtoul(s_reg, NULL, 16);
1056 unsigned value = strtoul(s_value, NULL, 16);
1059 stlink_write_reg(sl, ntohl(value), reg);
1060 } else if(reg == 0x19) {
1061 stlink_write_reg(sl, ntohl(value), 16);
1062 } else if(reg == 0x1A) {
1063 stlink_write_reg(sl, ntohl(value), 17);
1064 } else if(reg == 0x1B) {
1065 stlink_write_reg(sl, ntohl(value), 18);
1066 } else if(reg == 0x1C) {
1067 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1068 } else if(reg == 0x1D) {
1069 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1070 } else if(reg == 0x1E) {
1071 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1072 } else if(reg == 0x1F) {
1073 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1074 } else if(reg >= 0x20 && reg < 0x40) {
1075 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1076 } else if(reg == 0x40) {
1077 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1079 reply = strdup("E00");
1083 reply = strdup("OK");
1090 for(int i = 0; i < 16; i++) {
1092 strncpy(str, &packet[1 + i * 8], 8);
1093 uint32_t reg = strtoul(str, NULL, 16);
1094 stlink_write_reg(sl, ntohl(reg), i);
1097 reply = strdup("OK");
1101 char* s_start = &packet[1];
1102 char* s_count = strstr(&packet[1], ",") + 1;
1104 stm32_addr_t start = strtoul(s_start, NULL, 16);
1105 unsigned count = strtoul(s_count, NULL, 16);
1107 unsigned adj_start = start % 4;
1108 unsigned count_rnd = (count + adj_start + 4 - 1) / 4 * 4;
1110 stlink_read_mem32(sl, start - adj_start, count_rnd);
1112 reply = calloc(count * 2 + 1, 1);
1113 for(unsigned int i = 0; i < count; i++) {
1114 reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
1115 reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
1122 char* s_start = &packet[1];
1123 char* s_count = strstr(&packet[1], ",") + 1;
1124 char* hexdata = strstr(packet, ":") + 1;
1126 stm32_addr_t start = strtoul(s_start, NULL, 16);
1127 unsigned count = strtoul(s_count, NULL, 16);
1130 unsigned align_count = 4 - start % 4;
1131 if (align_count > count) align_count = count;
1132 for(unsigned int i = 0; i < align_count; i ++) {
1133 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1134 uint8_t byte = strtoul(hex, NULL, 16);
1135 sl->q_buf[i] = byte;
1137 stlink_write_mem8(sl, start, align_count);
1138 start += align_count;
1139 count -= align_count;
1140 hexdata += 2*align_count;
1143 if(count - count % 4) {
1144 unsigned aligned_count = count - count % 4;
1146 for(unsigned int i = 0; i < aligned_count; i ++) {
1147 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1148 uint8_t byte = strtoul(hex, NULL, 16);
1149 sl->q_buf[i] = byte;
1151 stlink_write_mem32(sl, start, aligned_count);
1152 count -= aligned_count;
1153 start += aligned_count;
1154 hexdata += 2*aligned_count;
1158 for(unsigned int i = 0; i < count; i ++) {
1159 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1160 uint8_t byte = strtoul(hex, NULL, 16);
1161 sl->q_buf[i] = byte;
1163 stlink_write_mem8(sl, start, count);
1165 reply = strdup("OK");
1171 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1172 stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1174 switch (packet[1]) {
1176 if(update_code_breakpoint(sl, addr, 1) < 0) {
1177 reply = strdup("E00");
1179 reply = strdup("OK");
1183 case '2': // insert write watchpoint
1184 case '3': // insert read watchpoint
1185 case '4': // insert access watchpoint
1188 if(packet[1] == '2') {
1190 } else if(packet[1] == '3') {
1196 if(add_data_watchpoint(sl, wf, addr, len) < 0) {
1197 reply = strdup("E00");
1199 reply = strdup("OK");
1211 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1212 //stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1214 switch (packet[1]) {
1215 case '1': // remove breakpoint
1216 update_code_breakpoint(sl, addr, 0);
1217 reply = strdup("OK");
1220 case '2' : // remove write watchpoint
1221 case '3' : // remove read watchpoint
1222 case '4' : // remove access watchpoint
1223 if(delete_data_watchpoint(sl, addr) < 0) {
1224 reply = strdup("E00");
1226 reply = strdup("OK");
1238 * Enter extended mode which allows restarting.
1239 * We do support that always.
1243 * Also, set to persistent mode
1244 * to allow GDB disconnect.
1248 reply = strdup("OK");
1254 /* Reset the core. */
1257 init_code_breakpoints(sl);
1258 init_data_watchpoints(sl);
1262 reply = strdup("OK");
1273 printf("send: %s\n", reply);
1276 int result = gdb_send_packet(client, reply);
1278 fprintf(stderr, "cannot send: %d\n", result);