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.
14 #include <sys/types.h>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #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
56 int serve(stlink_t *sl, st_state_t *st);
57 char* make_memory_map(stlink_t *sl);
59 static void cleanup(int signal __attribute__((unused))) {
60 if (connected_stlink) {
61 /* Switch back to mass storage mode before closing. */
62 stlink_run(connected_stlink);
63 stlink_exit_debug_mode(connected_stlink);
64 stlink_close(connected_stlink);
72 int parse_options(int argc, char** argv, st_state_t *st) {
73 static struct option long_options[] = {
74 {"help", no_argument, NULL, 'h'},
75 {"verbose", optional_argument, NULL, 'v'},
76 {"device", required_argument, NULL, 'd'},
77 {"stlink_version", required_argument, NULL, 's'},
78 {"stlinkv1", no_argument, NULL, '1'},
79 {"listen_port", required_argument, NULL, 'p'},
80 {"multi", optional_argument, NULL, 'm'},
83 const char * help_str = "%s - usage:\n\n"
84 " -h, --help\t\tPrint this help\n"
85 " -vXX, --verbose=XX\tspecify a specific verbosity level (0..99)\n"
86 " -v, --verbose\tspecify generally verbose logging\n"
87 " -d <device>, --device=/dev/stlink2_1\n"
88 "\t\t\tWhere is your stlink device connected?\n"
89 " -s X, --stlink_version=X\n"
90 "\t\t\tChoose what version of stlink to use, (defaults to 2)\n"
91 " -1, --stlinkv1\tForce stlink version 1\n"
92 " -p 4242, --listen_port=1234\n"
93 "\t\t\tSet the gdb server listen port. "
94 "(default port: " STRINGIFY(DEFAULT_GDB_LISTEN_PORT) ")\n"
96 "\t\t\tSet gdb server to extended mode.\n"
97 "\t\t\tst-util will continue listening for connections after disconnect.\n"
101 int option_index = 0;
104 while ((c = getopt_long(argc, argv, "hv::d:s:1p:m", long_options, &option_index)) != -1) {
107 printf("XXXXX Shouldn't really normally come here, only if there's no corresponding option\n");
108 printf("option %s", long_options[option_index].name);
110 printf(" with arg %s", optarg);
115 printf(help_str, argv[0]);
120 st->logging_level = atoi(optarg);
122 st->logging_level = DEFAULT_LOGGING_LEVEL;
126 if (strlen(optarg) > sizeof (st->devicename)) {
127 fprintf(stderr, "device name too long: %zd\n", strlen(optarg));
129 strcpy(st->devicename, optarg);
133 st->stlink_version = 1;
136 sscanf(optarg, "%i", &q);
137 if (q < 0 || q > 2) {
138 fprintf(stderr, "stlink version %d unknown!\n", q);
141 st->stlink_version = q;
144 sscanf(optarg, "%i", &q);
146 fprintf(stderr, "Can't use a negative port to listen on: %d\n", q);
158 printf("non-option ARGV-elements: ");
159 while (optind < argc)
160 printf("%s ", argv[optind++]);
167 int main(int argc, char** argv) {
172 memset(&state, 0, sizeof(state));
174 state.stlink_version = 2;
175 state.logging_level = DEFAULT_LOGGING_LEVEL;
176 state.listen_port = DEFAULT_GDB_LISTEN_PORT;
177 parse_options(argc, argv, &state);
178 switch (state.stlink_version) {
180 sl = stlink_open_usb(state.logging_level);
181 if(sl == NULL) return 1;
184 sl = stlink_v1_open(state.logging_level);
185 if(sl == NULL) return 1;
189 connected_stlink = sl;
190 signal(SIGINT, &cleanup);
191 signal(SIGTERM, &cleanup);
193 printf("Chip ID is %08x, Core ID is %08x.\n", sl->chip_id, sl->core_id);
197 current_memory_map = make_memory_map(sl);
201 if (WSAStartup(MAKEWORD(2,2),&wsadata) !=0 ) {
208 } while (state.persistent);
215 /* Switch back to mass storage mode before closing. */
217 stlink_exit_debug_mode(sl);
223 static const char* const target_description_F4 =
224 "<?xml version=\"1.0\"?>"
225 "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"
226 "<target version=\"1.0\">"
227 " <architecture>arm</architecture>"
228 " <feature name=\"org.gnu.gdb.arm.m-profile\">"
229 " <reg name=\"r0\" bitsize=\"32\"/>"
230 " <reg name=\"r1\" bitsize=\"32\"/>"
231 " <reg name=\"r2\" bitsize=\"32\"/>"
232 " <reg name=\"r3\" bitsize=\"32\"/>"
233 " <reg name=\"r4\" bitsize=\"32\"/>"
234 " <reg name=\"r5\" bitsize=\"32\"/>"
235 " <reg name=\"r6\" bitsize=\"32\"/>"
236 " <reg name=\"r7\" bitsize=\"32\"/>"
237 " <reg name=\"r8\" bitsize=\"32\"/>"
238 " <reg name=\"r9\" bitsize=\"32\"/>"
239 " <reg name=\"r10\" bitsize=\"32\"/>"
240 " <reg name=\"r11\" bitsize=\"32\"/>"
241 " <reg name=\"r12\" bitsize=\"32\"/>"
242 " <reg name=\"sp\" bitsize=\"32\" type=\"data_ptr\"/>"
243 " <reg name=\"lr\" bitsize=\"32\"/>"
244 " <reg name=\"pc\" bitsize=\"32\" type=\"code_ptr\"/>"
245 " <reg name=\"xpsr\" bitsize=\"32\" regnum=\"25\"/>"
246 " <reg name=\"msp\" bitsize=\"32\" regnum=\"26\" type=\"data_ptr\" group=\"general\" />"
247 " <reg name=\"psp\" bitsize=\"32\" regnum=\"27\" type=\"data_ptr\" group=\"general\" />"
248 " <reg name=\"control\" bitsize=\"8\" regnum=\"28\" type=\"int\" group=\"general\" />"
249 " <reg name=\"faultmask\" bitsize=\"8\" regnum=\"29\" type=\"int\" group=\"general\" />"
250 " <reg name=\"basepri\" bitsize=\"8\" regnum=\"30\" type=\"int\" group=\"general\" />"
251 " <reg name=\"primask\" bitsize=\"8\" regnum=\"31\" type=\"int\" group=\"general\" />"
252 " <reg name=\"s0\" bitsize=\"32\" regnum=\"32\" type=\"float\" group=\"float\" />"
253 " <reg name=\"s1\" bitsize=\"32\" type=\"float\" group=\"float\" />"
254 " <reg name=\"s2\" bitsize=\"32\" type=\"float\" group=\"float\" />"
255 " <reg name=\"s3\" bitsize=\"32\" type=\"float\" group=\"float\" />"
256 " <reg name=\"s4\" bitsize=\"32\" type=\"float\" group=\"float\" />"
257 " <reg name=\"s5\" bitsize=\"32\" type=\"float\" group=\"float\" />"
258 " <reg name=\"s6\" bitsize=\"32\" type=\"float\" group=\"float\" />"
259 " <reg name=\"s7\" bitsize=\"32\" type=\"float\" group=\"float\" />"
260 " <reg name=\"s8\" bitsize=\"32\" type=\"float\" group=\"float\" />"
261 " <reg name=\"s9\" bitsize=\"32\" type=\"float\" group=\"float\" />"
262 " <reg name=\"s10\" bitsize=\"32\" type=\"float\" group=\"float\" />"
263 " <reg name=\"s11\" bitsize=\"32\" type=\"float\" group=\"float\" />"
264 " <reg name=\"s12\" bitsize=\"32\" type=\"float\" group=\"float\" />"
265 " <reg name=\"s13\" bitsize=\"32\" type=\"float\" group=\"float\" />"
266 " <reg name=\"s14\" bitsize=\"32\" type=\"float\" group=\"float\" />"
267 " <reg name=\"s15\" bitsize=\"32\" type=\"float\" group=\"float\" />"
268 " <reg name=\"s16\" bitsize=\"32\" type=\"float\" group=\"float\" />"
269 " <reg name=\"s17\" bitsize=\"32\" type=\"float\" group=\"float\" />"
270 " <reg name=\"s18\" bitsize=\"32\" type=\"float\" group=\"float\" />"
271 " <reg name=\"s19\" bitsize=\"32\" type=\"float\" group=\"float\" />"
272 " <reg name=\"s20\" bitsize=\"32\" type=\"float\" group=\"float\" />"
273 " <reg name=\"s21\" bitsize=\"32\" type=\"float\" group=\"float\" />"
274 " <reg name=\"s22\" bitsize=\"32\" type=\"float\" group=\"float\" />"
275 " <reg name=\"s23\" bitsize=\"32\" type=\"float\" group=\"float\" />"
276 " <reg name=\"s24\" bitsize=\"32\" type=\"float\" group=\"float\" />"
277 " <reg name=\"s25\" bitsize=\"32\" type=\"float\" group=\"float\" />"
278 " <reg name=\"s26\" bitsize=\"32\" type=\"float\" group=\"float\" />"
279 " <reg name=\"s27\" bitsize=\"32\" type=\"float\" group=\"float\" />"
280 " <reg name=\"s28\" bitsize=\"32\" type=\"float\" group=\"float\" />"
281 " <reg name=\"s29\" bitsize=\"32\" type=\"float\" group=\"float\" />"
282 " <reg name=\"s30\" bitsize=\"32\" type=\"float\" group=\"float\" />"
283 " <reg name=\"s31\" bitsize=\"32\" type=\"float\" group=\"float\" />"
284 " <reg name=\"fpscr\" bitsize=\"32\" type=\"int\" group=\"float\" />"
288 static const char* const memory_map_template_F4 =
289 "<?xml version=\"1.0\"?>"
290 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
291 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
293 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x100000\"/>" // code = sram, bootrom or flash; flash is bigger
294 " <memory type=\"ram\" start=\"0x10000000\" length=\"0x10000\"/>" // ccm ram
295 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x20000\"/>" // sram
296 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x10000\">" //Sectors 0..3
297 " <property name=\"blocksize\">0x4000</property>" //16kB
299 " <memory type=\"flash\" start=\"0x08010000\" length=\"0x10000\">" //Sector 4
300 " <property name=\"blocksize\">0x10000</property>" //64kB
302 " <memory type=\"flash\" start=\"0x08020000\" length=\"0x70000\">" //Sectors 5..11
303 " <property name=\"blocksize\">0x20000</property>" //128kB
305 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
306 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
307 " <memory type=\"rom\" start=\"0x1fff0000\" length=\"0x7800\"/>" // bootrom
308 " <memory type=\"rom\" start=\"0x1fffc000\" length=\"0x10\"/>" // option byte area
311 static const char* const memory_map_template =
312 "<?xml version=\"1.0\"?>"
313 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
314 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
316 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%zx\"/>" // code = sram, bootrom or flash; flash is bigger
317 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%zx\"/>" // sram 8k
318 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%zx\">"
319 " <property name=\"blocksize\">0x%zx</property>"
321 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
322 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
323 " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%zx\"/>" // bootrom
324 " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x10\"/>" // option byte area
327 char* make_memory_map(stlink_t *sl) {
328 /* This will be freed in serve() */
329 char* map = malloc(4096);
332 if(sl->chip_id==STM32_CHIPID_F4) {
333 strcpy(map, memory_map_template_F4);
335 snprintf(map, 4096, memory_map_template,
338 sl->flash_size, sl->flash_pgsz,
339 sl->sys_base, sl->sys_size);
346 * DWT_COMP0 0xE0001020
347 * DWT_MASK0 0xE0001024
348 * DWT_FUNCTION0 0xE0001028
349 * DWT_COMP1 0xE0001030
350 * DWT_MASK1 0xE0001034
351 * DWT_FUNCTION1 0xE0001038
352 * DWT_COMP2 0xE0001040
353 * DWT_MASK2 0xE0001044
354 * DWT_FUNCTION2 0xE0001048
355 * DWT_COMP3 0xE0001050
356 * DWT_MASK3 0xE0001054
357 * DWT_FUNCTION3 0xE0001058
360 #define DATA_WATCH_NUM 4
362 enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
364 struct code_hw_watchpoint {
370 struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
372 static void init_data_watchpoints(stlink_t *sl) {
374 printf("init watchpoints\n");
377 // set trcena in debug command to turn on dwt unit
378 stlink_write_debug32(sl, 0xE000EDFC,
379 stlink_read_debug32(sl, 0xE000EDFC) | (1<<24));
381 // make sure all watchpoints are cleared
382 for(int i = 0; i < DATA_WATCH_NUM; i++) {
383 data_watches[i].fun = WATCHDISABLED;
384 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
388 static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
394 // find a free watchpoint
404 if((mask != (uint32_t)-1) && (mask < 16)) {
405 for(i = 0; i < DATA_WATCH_NUM; i++) {
406 // is this an empty slot ?
407 if(data_watches[i].fun == WATCHDISABLED) {
409 printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
412 data_watches[i].fun = wf;
413 data_watches[i].addr = addr;
414 data_watches[i].mask = mask;
416 // insert comparator address
417 stlink_write_debug32(sl, 0xE0001020 + i * 16, addr);
420 stlink_write_debug32(sl, 0xE0001024 + i * 16, mask);
423 stlink_write_debug32(sl, 0xE0001028 + i * 16, wf);
425 // just to make sure the matched bit is clear !
426 stlink_read_debug32(sl, 0xE0001028 + i * 16);
433 printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
438 static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
442 for(i = 0 ; i < DATA_WATCH_NUM; i++) {
443 if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
445 printf("delete watchpoint %d addr %x\n", i, addr);
448 data_watches[i].fun = WATCHDISABLED;
449 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
456 printf("failure: delete watchpoint addr %x\n", addr);
462 #define CODE_BREAK_NUM 6
463 #define CODE_BREAK_LOW 0x01
464 #define CODE_BREAK_HIGH 0x02
466 struct code_hw_breakpoint {
471 struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
473 static void init_code_breakpoints(stlink_t *sl) {
474 memset(sl->q_buf, 0, 4);
475 stlink_write_debug32(sl, CM3_REG_FP_CTRL, 0x03 /*KEY | ENABLE4*/);
476 printf("KARL - should read back as 0x03, not 60 02 00 00\n");
477 stlink_read_debug32(sl, CM3_REG_FP_CTRL);
479 for(int i = 0; i < CODE_BREAK_NUM; i++) {
480 code_breaks[i].type = 0;
481 stlink_write_debug32(sl, CM3_REG_FP_COMP0 + i * 4, 0);
485 static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
486 stm32_addr_t fpb_addr = addr & ~0x3;
487 int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
490 fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
495 for(int i = 0; i < CODE_BREAK_NUM; i++) {
496 if(fpb_addr == code_breaks[i].addr ||
497 (set && code_breaks[i].type == 0)) {
504 if(set) return -1; // Free slot not found
505 else return 0; // Breakpoint is already removed
508 struct code_hw_breakpoint* brk = &code_breaks[id];
510 brk->addr = fpb_addr;
512 if(set) brk->type |= type;
513 else brk->type &= ~type;
517 printf("clearing hw break %d\n", id);
520 stlink_write_debug32(sl, 0xe0002008 + id * 4, 0);
522 uint32_t mask = (brk->addr) | 1 | (brk->type << 30);
525 printf("setting hw break %d at %08x (%d)\n",
526 id, brk->addr, brk->type);
527 printf("reg %08x \n",
531 stlink_write_debug32(sl, 0xe0002008 + id * 4, mask);
543 struct flash_block* next;
546 static struct flash_block* flash_root;
548 static int flash_add_block(stm32_addr_t addr, unsigned length, stlink_t *sl) {
550 if(addr < FLASH_BASE || addr + length > FLASH_BASE + sl->flash_size) {
551 fprintf(stderr, "flash_add_block: incorrect bounds\n");
555 stlink_calculate_pagesize(sl, addr);
556 if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
557 fprintf(stderr, "flash_add_block: unaligned block\n");
561 struct flash_block* new = malloc(sizeof(struct flash_block));
562 new->next = flash_root;
565 new->length = length;
566 new->data = calloc(length, 1);
573 static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
574 unsigned int fit_blocks = 0, fit_length = 0;
576 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
577 /* Block: ------X------Y--------
581 * Block intersects with data, if:
585 unsigned X = fb->addr, Y = fb->addr + fb->length;
586 unsigned a = addr, b = addr + length;
588 // from start of the block
589 unsigned start = (a > X ? a : X) - X;
590 unsigned end = (b > Y ? Y : b) - X;
592 memcpy(fb->data + start, data, end - start);
595 fit_length += end - start;
599 if(fit_blocks == 0) {
600 fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
604 if(fit_length != length) {
605 fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
606 addr, length, fit_length);
607 fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
613 static int flash_go(stlink_t *sl) {
616 // Some kinds of clock settings do not allow writing to flash.
619 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
621 printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
624 unsigned length = fb->length;
625 for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
628 stlink_calculate_pagesize(sl, page);
631 printf("flash_do: page %08x\n", page);
634 if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
635 length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
645 for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
656 int serve(stlink_t *sl, st_state_t *st) {
657 int sock = socket(AF_INET, SOCK_STREAM, 0);
663 unsigned int val = 1;
664 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
666 struct sockaddr_in serv_addr;
667 memset(&serv_addr,0,sizeof(struct sockaddr_in));
668 serv_addr.sin_family = AF_INET;
669 serv_addr.sin_addr.s_addr = INADDR_ANY;
670 serv_addr.sin_port = htons(st->listen_port);
672 if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
677 if(listen(sock, 5) < 0) {
682 stlink_force_debug(sl);
684 init_code_breakpoints(sl);
685 init_data_watchpoints(sl);
687 printf("Listening at *:%d...\n", st->listen_port);
689 int client = accept(sock, NULL, NULL);
690 //signal (SIGINT, SIG_DFL);
698 printf("GDB connected.\n");
701 * To allow resetting the chip from GDB it is required to
702 * emulate attaching and detaching to target.
704 unsigned int attached = 1;
709 int status = gdb_recv_packet(client, &packet);
711 fprintf(stderr, "cannot recv: %d\n", status);
716 printf("recv: %s\n", packet);
724 if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
729 char *separator = strstr(packet, ":"), *params = "";
730 if(separator == NULL) {
731 separator = packet + strlen(packet);
733 params = separator + 1;
736 unsigned queryNameLength = (separator - &packet[1]);
737 char* queryName = calloc(queryNameLength + 1, 1);
738 strncpy(queryName, &packet[1], queryNameLength);
741 printf("query: %s;%s\n", queryName, params);
744 if(!strcmp(queryName, "Supported")) {
745 if(sl->chip_id==STM32_CHIPID_F4) {
746 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+;qXfer:features:read+");
749 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
751 } else if(!strcmp(queryName, "Xfer")) {
752 char *type, *op, *__s_addr, *s_length;
754 char *annex __attribute__((unused));
756 type = strsep(&tok, ":");
757 op = strsep(&tok, ":");
758 annex = strsep(&tok, ":");
759 __s_addr = strsep(&tok, ",");
762 unsigned addr = strtoul(__s_addr, NULL, 16),
763 length = strtoul(s_length, NULL, 16);
766 printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
767 type, op, annex, addr, length);
770 const char* data = NULL;
772 if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
773 data = current_memory_map;
775 if(!strcmp(type, "features") && !strcmp(op, "read"))
776 data = target_description_F4;
779 unsigned data_length = strlen(data);
780 if(addr + length > data_length)
781 length = data_length - addr;
786 reply = calloc(length + 2, 1);
788 strncpy(&reply[1], data, length);
791 } else if(!strncmp(queryName, "Rcmd,",4)) {
792 // Rcmd uses the wrong separator
793 char *separator = strstr(packet, ","), *params = "";
794 if(separator == NULL) {
795 separator = packet + strlen(packet);
797 params = separator + 1;
801 if (!strncmp(params,"726573756d65",12)) {// resume
803 printf("Rcmd: resume\n");
807 reply = strdup("OK");
808 } else if (!strncmp(params,"68616c74",8)) { //halt
809 reply = strdup("OK");
811 stlink_force_debug(sl);
814 printf("Rcmd: halt\n");
816 } else if (!strncmp(params,"6a7461675f7265736574",20)) { //jtag_reset
817 reply = strdup("OK");
819 stlink_jtag_reset(sl, 1);
820 stlink_jtag_reset(sl, 0);
821 stlink_force_debug(sl);
824 printf("Rcmd: jtag_reset\n");
826 } else if (!strncmp(params,"7265736574",10)) { //reset
827 reply = strdup("OK");
829 stlink_force_debug(sl);
831 init_code_breakpoints(sl);
832 init_data_watchpoints(sl);
835 printf("Rcmd: reset\n");
839 printf("Rcmd: %s\n", params);
856 char *cmdName = strtok_r(packet, ":;", ¶ms);
858 cmdName++; // vCommand -> Command
860 if(!strcmp(cmdName, "FlashErase")) {
861 char *__s_addr, *s_length;
864 __s_addr = strsep(&tok, ",");
867 unsigned addr = strtoul(__s_addr, NULL, 16),
868 length = strtoul(s_length, NULL, 16);
871 printf("FlashErase: addr:%08x,len:%04x\n",
875 if(flash_add_block(addr, length, sl) < 0) {
876 reply = strdup("E00");
878 reply = strdup("OK");
880 } else if(!strcmp(cmdName, "FlashWrite")) {
881 char *__s_addr, *data;
884 __s_addr = strsep(&tok, ":");
887 unsigned addr = strtoul(__s_addr, NULL, 16);
888 unsigned data_length = status - (data - packet);
890 // Length of decoded data cannot be more than
891 // encoded, as escapes are removed.
892 // Additional byte is reserved for alignment fix.
893 uint8_t *decoded = calloc(data_length + 1, 1);
894 unsigned dec_index = 0;
895 for(unsigned int i = 0; i < data_length; i++) {
896 if(data[i] == 0x7d) {
898 decoded[dec_index++] = data[i] ^ 0x20;
900 decoded[dec_index++] = data[i];
905 if(dec_index % 2 != 0)
909 printf("binary packet %d -> %d\n", data_length, dec_index);
912 if(flash_populate(addr, decoded, dec_index) < 0) {
913 reply = strdup("E00");
915 reply = strdup("OK");
917 } else if(!strcmp(cmdName, "FlashDone")) {
918 if(flash_go(sl) < 0) {
919 reply = strdup("E00");
921 reply = strdup("OK");
923 } else if(!strcmp(cmdName, "Kill")) {
926 reply = strdup("OK");
939 int status = gdb_check_for_interrupt(client);
941 fprintf(stderr, "cannot check for int: %d\n", status);
946 stlink_force_debug(sl);
951 if(sl->core_stat == STLINK_CORE_HALTED) {
958 reply = strdup("S05"); // TRAP
964 reply = strdup("S05"); // TRAP
969 reply = strdup("S05"); // TRAP
971 /* Stub shall reply OK if not attached. */
972 reply = strdup("OK");
977 stlink_read_all_regs(sl, ®p);
979 reply = calloc(8 * 16 + 1, 1);
980 for(int i = 0; i < 16; i++)
981 sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
986 unsigned id = strtoul(&packet[1], NULL, 16);
987 unsigned myreg = 0xDEADDEAD;
990 stlink_read_reg(sl, id, ®p);
991 myreg = htonl(regp.r[id]);
992 } else if(id == 0x19) {
993 stlink_read_reg(sl, 16, ®p);
994 myreg = htonl(regp.xpsr);
995 } else if(id == 0x1A) {
996 stlink_read_reg(sl, 17, ®p);
997 myreg = htonl(regp.main_sp);
998 } else if(id == 0x1B) {
999 stlink_read_reg(sl, 18, ®p);
1000 myreg = htonl(regp.process_sp);
1001 } else if(id == 0x1C) {
1002 stlink_read_unsupported_reg(sl, id, ®p);
1003 myreg = htonl(regp.control);
1004 } else if(id == 0x1D) {
1005 stlink_read_unsupported_reg(sl, id, ®p);
1006 myreg = htonl(regp.faultmask);
1007 } else if(id == 0x1E) {
1008 stlink_read_unsupported_reg(sl, id, ®p);
1009 myreg = htonl(regp.basepri);
1010 } else if(id == 0x1F) {
1011 stlink_read_unsupported_reg(sl, id, ®p);
1012 myreg = htonl(regp.primask);
1013 } else if(id >= 0x20 && id < 0x40) {
1014 stlink_read_unsupported_reg(sl, id, ®p);
1015 myreg = htonl(regp.s[id-0x20]);
1016 } else if(id == 0x40) {
1017 stlink_read_unsupported_reg(sl, id, ®p);
1018 myreg = htonl(regp.fpscr);
1020 reply = strdup("E00");
1023 reply = calloc(8 + 1, 1);
1024 sprintf(reply, "%08x", myreg);
1030 char* s_reg = &packet[1];
1031 char* s_value = strstr(&packet[1], "=") + 1;
1033 unsigned reg = strtoul(s_reg, NULL, 16);
1034 unsigned value = strtoul(s_value, NULL, 16);
1037 stlink_write_reg(sl, ntohl(value), reg);
1038 } else if(reg == 0x19) {
1039 stlink_write_reg(sl, ntohl(value), 16);
1040 } else if(reg == 0x1A) {
1041 stlink_write_reg(sl, ntohl(value), 17);
1042 } else if(reg == 0x1B) {
1043 stlink_write_reg(sl, ntohl(value), 18);
1044 } else if(reg == 0x1C) {
1045 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1046 } else if(reg == 0x1D) {
1047 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1048 } else if(reg == 0x1E) {
1049 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1050 } else if(reg == 0x1F) {
1051 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1052 } else if(reg >= 0x20 && reg < 0x40) {
1053 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1054 } else if(reg == 0x40) {
1055 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1057 reply = strdup("E00");
1061 reply = strdup("OK");
1068 for(int i = 0; i < 16; i++) {
1070 strncpy(str, &packet[1 + i * 8], 8);
1071 uint32_t reg = strtoul(str, NULL, 16);
1072 stlink_write_reg(sl, ntohl(reg), i);
1075 reply = strdup("OK");
1079 char* s_start = &packet[1];
1080 char* s_count = strstr(&packet[1], ",") + 1;
1082 stm32_addr_t start = strtoul(s_start, NULL, 16);
1083 unsigned count = strtoul(s_count, NULL, 16);
1085 unsigned adj_start = start % 4;
1086 unsigned count_rnd = (count + adj_start + 4 - 1) / 4 * 4;
1088 stlink_read_mem32(sl, start - adj_start, count_rnd);
1090 reply = calloc(count * 2 + 1, 1);
1091 for(unsigned int i = 0; i < count; i++) {
1092 reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
1093 reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
1100 char* s_start = &packet[1];
1101 char* s_count = strstr(&packet[1], ",") + 1;
1102 char* hexdata = strstr(packet, ":") + 1;
1104 stm32_addr_t start = strtoul(s_start, NULL, 16);
1105 unsigned count = strtoul(s_count, NULL, 16);
1108 unsigned align_count = 4 - start % 4;
1109 if (align_count > count) align_count = count;
1110 for(unsigned int i = 0; i < align_count; i ++) {
1111 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1112 uint8_t byte = strtoul(hex, NULL, 16);
1113 sl->q_buf[i] = byte;
1115 stlink_write_mem8(sl, start, align_count);
1116 start += align_count;
1117 count -= align_count;
1118 hexdata += 2*align_count;
1121 if(count - count % 4) {
1122 unsigned aligned_count = count - count % 4;
1124 for(unsigned int i = 0; i < aligned_count; i ++) {
1125 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1126 uint8_t byte = strtoul(hex, NULL, 16);
1127 sl->q_buf[i] = byte;
1129 stlink_write_mem32(sl, start, aligned_count);
1130 count -= aligned_count;
1131 start += aligned_count;
1132 hexdata += 2*aligned_count;
1136 for(unsigned int i = 0; i < count; i ++) {
1137 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1138 uint8_t byte = strtoul(hex, NULL, 16);
1139 sl->q_buf[i] = byte;
1141 stlink_write_mem8(sl, start, count);
1143 reply = strdup("OK");
1149 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1150 stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1152 switch (packet[1]) {
1154 if(update_code_breakpoint(sl, addr, 1) < 0) {
1155 reply = strdup("E00");
1157 reply = strdup("OK");
1161 case '2': // insert write watchpoint
1162 case '3': // insert read watchpoint
1163 case '4': // insert access watchpoint
1166 if(packet[1] == '2') {
1168 } else if(packet[1] == '3') {
1174 if(add_data_watchpoint(sl, wf, addr, len) < 0) {
1175 reply = strdup("E00");
1177 reply = strdup("OK");
1189 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1190 //stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1192 switch (packet[1]) {
1193 case '1': // remove breakpoint
1194 update_code_breakpoint(sl, addr, 0);
1195 reply = strdup("OK");
1198 case '2' : // remove write watchpoint
1199 case '3' : // remove read watchpoint
1200 case '4' : // remove access watchpoint
1201 if(delete_data_watchpoint(sl, addr) < 0) {
1202 reply = strdup("E00");
1204 reply = strdup("OK");
1216 * Enter extended mode which allows restarting.
1217 * We do support that always.
1221 * Also, set to persistent mode
1222 * to allow GDB disconnect.
1226 reply = strdup("OK");
1232 /* Reset the core. */
1235 init_code_breakpoints(sl);
1236 init_data_watchpoints(sl);
1240 reply = strdup("OK");
1251 printf("send: %s\n", reply);
1254 int result = gdb_send_packet(client, reply);
1256 fprintf(stderr, "cannot send: %d\n", result);