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 static const char hex[] = "0123456789abcdef";
41 static const char* current_memory_map = NULL;
43 typedef struct _st_state_t {
44 // things from command line, bleh
46 // "/dev/serial/by-id/usb-FTDI_TTL232R-3V3_FTE531X6-if00-port0" is only 58 chars
54 int serve(stlink_t *sl, st_state_t *st);
55 char* make_memory_map(stlink_t *sl);
58 int parse_options(int argc, char** argv, st_state_t *st) {
59 static struct option long_options[] = {
60 {"help", no_argument, NULL, 'h'},
61 {"verbose", optional_argument, NULL, 'v'},
62 {"device", required_argument, NULL, 'd'},
63 {"stlink_version", required_argument, NULL, 's'},
64 {"stlinkv1", no_argument, NULL, '1'},
65 {"listen_port", required_argument, NULL, 'p'},
66 {"multi", optional_argument, NULL, 'm'},
69 const char * help_str = "%s - usage:\n\n"
70 " -h, --help\t\tPrint this help\n"
71 " -vXX, --verbose=XX\tspecify a specific verbosity level (0..99)\n"
72 " -v, --verbose\tspecify generally verbose logging\n"
73 " -d <device>, --device=/dev/stlink2_1\n"
74 "\t\t\tWhere is your stlink device connected?\n"
75 " -s X, --stlink_version=X\n"
76 "\t\t\tChoose what version of stlink to use, (defaults to 2)\n"
77 " -1, --stlinkv1\tForce stlink version 1\n"
78 " -p 4242, --listen_port=1234\n"
79 "\t\t\tSet the gdb server listen port. "
80 "(default port: " STRINGIFY(DEFAULT_GDB_LISTEN_PORT) ")\n"
82 "\t\t\tSet gdb server to extended mode.\n"
83 "\t\t\tst-util will continue listening for connections after disconnect.\n"
90 while ((c = getopt_long(argc, argv, "hv::d:s:1p:m", long_options, &option_index)) != -1) {
93 printf("XXXXX Shouldn't really normally come here, only if there's no corresponding option\n");
94 printf("option %s", long_options[option_index].name);
96 printf(" with arg %s", optarg);
101 printf(help_str, argv[0]);
106 st->logging_level = atoi(optarg);
108 st->logging_level = DEFAULT_LOGGING_LEVEL;
112 if (strlen(optarg) > sizeof (st->devicename)) {
113 fprintf(stderr, "device name too long: %zd\n", strlen(optarg));
115 strcpy(st->devicename, optarg);
119 st->stlink_version = 1;
122 sscanf(optarg, "%i", &q);
123 if (q < 0 || q > 2) {
124 fprintf(stderr, "stlink version %d unknown!\n", q);
127 st->stlink_version = q;
130 sscanf(optarg, "%i", &q);
132 fprintf(stderr, "Can't use a negative port to listen on: %d\n", q);
144 printf("non-option ARGV-elements: ");
145 while (optind < argc)
146 printf("%s ", argv[optind++]);
153 int main(int argc, char** argv) {
158 memset(&state, 0, sizeof(state));
160 state.stlink_version = 2;
161 state.logging_level = DEFAULT_LOGGING_LEVEL;
162 state.listen_port = DEFAULT_GDB_LISTEN_PORT;
163 parse_options(argc, argv, &state);
164 switch (state.stlink_version) {
166 sl = stlink_open_usb(state.logging_level);
167 if(sl == NULL) return 1;
170 sl = stlink_v1_open(state.logging_level);
171 if(sl == NULL) return 1;
175 printf("Chip ID is %08x, Core ID is %08x.\n", sl->chip_id, sl->core_id);
179 current_memory_map = make_memory_map(sl);
183 if (WSAStartup(MAKEWORD(2,2),&wsadata) !=0 ) {
190 } while (state.persistent);
197 /* Switch back to mass storage mode before closing. */
199 stlink_exit_debug_mode(sl);
205 static const char* const target_description_F4 =
206 "<?xml version=\"1.0\"?>"
207 "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"
208 "<target version=\"1.0\">"
209 " <architecture>arm</architecture>"
210 " <feature name=\"org.gnu.gdb.arm.m-profile\">"
211 " <reg name=\"r0\" bitsize=\"32\"/>"
212 " <reg name=\"r1\" bitsize=\"32\"/>"
213 " <reg name=\"r2\" bitsize=\"32\"/>"
214 " <reg name=\"r3\" bitsize=\"32\"/>"
215 " <reg name=\"r4\" bitsize=\"32\"/>"
216 " <reg name=\"r5\" bitsize=\"32\"/>"
217 " <reg name=\"r6\" bitsize=\"32\"/>"
218 " <reg name=\"r7\" bitsize=\"32\"/>"
219 " <reg name=\"r8\" bitsize=\"32\"/>"
220 " <reg name=\"r9\" bitsize=\"32\"/>"
221 " <reg name=\"r10\" bitsize=\"32\"/>"
222 " <reg name=\"r11\" bitsize=\"32\"/>"
223 " <reg name=\"r12\" bitsize=\"32\"/>"
224 " <reg name=\"sp\" bitsize=\"32\" type=\"data_ptr\"/>"
225 " <reg name=\"lr\" bitsize=\"32\"/>"
226 " <reg name=\"pc\" bitsize=\"32\" type=\"code_ptr\"/>"
227 " <reg name=\"xpsr\" bitsize=\"32\" regnum=\"25\"/>"
228 " <reg name=\"msp\" bitsize=\"32\" regnum=\"26\" type=\"data_ptr\" group=\"general\" />"
229 " <reg name=\"psp\" bitsize=\"32\" regnum=\"27\" type=\"data_ptr\" group=\"general\" />"
230 " <reg name=\"control\" bitsize=\"8\" regnum=\"28\" type=\"int\" group=\"general\" />"
231 " <reg name=\"faultmask\" bitsize=\"8\" regnum=\"29\" type=\"int\" group=\"general\" />"
232 " <reg name=\"basepri\" bitsize=\"8\" regnum=\"30\" type=\"int\" group=\"general\" />"
233 " <reg name=\"primask\" bitsize=\"8\" regnum=\"31\" type=\"int\" group=\"general\" />"
234 " <reg name=\"s0\" bitsize=\"32\" regnum=\"32\" type=\"float\" group=\"float\" />"
235 " <reg name=\"s1\" bitsize=\"32\" type=\"float\" group=\"float\" />"
236 " <reg name=\"s2\" bitsize=\"32\" type=\"float\" group=\"float\" />"
237 " <reg name=\"s3\" bitsize=\"32\" type=\"float\" group=\"float\" />"
238 " <reg name=\"s4\" bitsize=\"32\" type=\"float\" group=\"float\" />"
239 " <reg name=\"s5\" bitsize=\"32\" type=\"float\" group=\"float\" />"
240 " <reg name=\"s6\" bitsize=\"32\" type=\"float\" group=\"float\" />"
241 " <reg name=\"s7\" bitsize=\"32\" type=\"float\" group=\"float\" />"
242 " <reg name=\"s8\" bitsize=\"32\" type=\"float\" group=\"float\" />"
243 " <reg name=\"s9\" bitsize=\"32\" type=\"float\" group=\"float\" />"
244 " <reg name=\"s10\" bitsize=\"32\" type=\"float\" group=\"float\" />"
245 " <reg name=\"s11\" bitsize=\"32\" type=\"float\" group=\"float\" />"
246 " <reg name=\"s12\" bitsize=\"32\" type=\"float\" group=\"float\" />"
247 " <reg name=\"s13\" bitsize=\"32\" type=\"float\" group=\"float\" />"
248 " <reg name=\"s14\" bitsize=\"32\" type=\"float\" group=\"float\" />"
249 " <reg name=\"s15\" bitsize=\"32\" type=\"float\" group=\"float\" />"
250 " <reg name=\"s16\" bitsize=\"32\" type=\"float\" group=\"float\" />"
251 " <reg name=\"s17\" bitsize=\"32\" type=\"float\" group=\"float\" />"
252 " <reg name=\"s18\" bitsize=\"32\" type=\"float\" group=\"float\" />"
253 " <reg name=\"s19\" bitsize=\"32\" type=\"float\" group=\"float\" />"
254 " <reg name=\"s20\" bitsize=\"32\" type=\"float\" group=\"float\" />"
255 " <reg name=\"s21\" bitsize=\"32\" type=\"float\" group=\"float\" />"
256 " <reg name=\"s22\" bitsize=\"32\" type=\"float\" group=\"float\" />"
257 " <reg name=\"s23\" bitsize=\"32\" type=\"float\" group=\"float\" />"
258 " <reg name=\"s24\" bitsize=\"32\" type=\"float\" group=\"float\" />"
259 " <reg name=\"s25\" bitsize=\"32\" type=\"float\" group=\"float\" />"
260 " <reg name=\"s26\" bitsize=\"32\" type=\"float\" group=\"float\" />"
261 " <reg name=\"s27\" bitsize=\"32\" type=\"float\" group=\"float\" />"
262 " <reg name=\"s28\" bitsize=\"32\" type=\"float\" group=\"float\" />"
263 " <reg name=\"s29\" bitsize=\"32\" type=\"float\" group=\"float\" />"
264 " <reg name=\"s30\" bitsize=\"32\" type=\"float\" group=\"float\" />"
265 " <reg name=\"s31\" bitsize=\"32\" type=\"float\" group=\"float\" />"
266 " <reg name=\"fpscr\" bitsize=\"32\" type=\"int\" group=\"float\" />"
270 static const char* const memory_map_template_F4 =
271 "<?xml version=\"1.0\"?>"
272 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
273 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
275 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x100000\"/>" // code = sram, bootrom or flash; flash is bigger
276 " <memory type=\"ram\" start=\"0x10000000\" length=\"0x10000\"/>" // ccm ram
277 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x20000\"/>" // sram
278 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x10000\">" //Sectors 0..3
279 " <property name=\"blocksize\">0x4000</property>" //16kB
281 " <memory type=\"flash\" start=\"0x08010000\" length=\"0x10000\">" //Sector 4
282 " <property name=\"blocksize\">0x10000</property>" //64kB
284 " <memory type=\"flash\" start=\"0x08020000\" length=\"0x70000\">" //Sectors 5..11
285 " <property name=\"blocksize\">0x20000</property>" //128kB
287 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
288 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
289 " <memory type=\"rom\" start=\"0x1fff0000\" length=\"0x7800\"/>" // bootrom
290 " <memory type=\"rom\" start=\"0x1fffc000\" length=\"0x10\"/>" // option byte area
293 static const char* const memory_map_template =
294 "<?xml version=\"1.0\"?>"
295 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
296 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
298 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%zx\"/>" // code = sram, bootrom or flash; flash is bigger
299 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%zx\"/>" // sram 8k
300 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%zx\">"
301 " <property name=\"blocksize\">0x%zx</property>"
303 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
304 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
305 " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%zx\"/>" // bootrom
306 " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x10\"/>" // option byte area
309 char* make_memory_map(stlink_t *sl) {
310 /* This will be freed in serve() */
311 char* map = malloc(4096);
314 if(sl->chip_id==STM32_CHIPID_F4) {
315 strcpy(map, memory_map_template_F4);
317 snprintf(map, 4096, memory_map_template,
320 sl->flash_size, sl->flash_pgsz,
321 sl->sys_base, sl->sys_size);
328 * DWT_COMP0 0xE0001020
329 * DWT_MASK0 0xE0001024
330 * DWT_FUNCTION0 0xE0001028
331 * DWT_COMP1 0xE0001030
332 * DWT_MASK1 0xE0001034
333 * DWT_FUNCTION1 0xE0001038
334 * DWT_COMP2 0xE0001040
335 * DWT_MASK2 0xE0001044
336 * DWT_FUNCTION2 0xE0001048
337 * DWT_COMP3 0xE0001050
338 * DWT_MASK3 0xE0001054
339 * DWT_FUNCTION3 0xE0001058
342 #define DATA_WATCH_NUM 4
344 enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
346 struct code_hw_watchpoint {
352 struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
354 static void init_data_watchpoints(stlink_t *sl) {
356 printf("init watchpoints\n");
359 // set trcena in debug command to turn on dwt unit
360 stlink_write_debug32(sl, 0xE000EDFC,
361 stlink_read_debug32(sl, 0xE000EDFC) | (1<<24));
363 // make sure all watchpoints are cleared
364 for(int i = 0; i < DATA_WATCH_NUM; i++) {
365 data_watches[i].fun = WATCHDISABLED;
366 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
370 static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
376 // find a free watchpoint
386 if((mask != (uint32_t)-1) && (mask < 16)) {
387 for(i = 0; i < DATA_WATCH_NUM; i++) {
388 // is this an empty slot ?
389 if(data_watches[i].fun == WATCHDISABLED) {
391 printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
394 data_watches[i].fun = wf;
395 data_watches[i].addr = addr;
396 data_watches[i].mask = mask;
398 // insert comparator address
399 stlink_write_debug32(sl, 0xE0001020 + i * 16, addr);
402 stlink_write_debug32(sl, 0xE0001024 + i * 16, mask);
405 stlink_write_debug32(sl, 0xE0001028 + i * 16, wf);
407 // just to make sure the matched bit is clear !
408 stlink_read_debug32(sl, 0xE0001028 + i * 16);
415 printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
420 static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
424 for(i = 0 ; i < DATA_WATCH_NUM; i++) {
425 if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
427 printf("delete watchpoint %d addr %x\n", i, addr);
430 data_watches[i].fun = WATCHDISABLED;
431 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
438 printf("failure: delete watchpoint addr %x\n", addr);
444 #define CODE_BREAK_NUM 6
445 #define CODE_BREAK_LOW 0x01
446 #define CODE_BREAK_HIGH 0x02
448 struct code_hw_breakpoint {
453 struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
455 static void init_code_breakpoints(stlink_t *sl) {
456 memset(sl->q_buf, 0, 4);
457 stlink_write_debug32(sl, CM3_REG_FP_CTRL, 0x03 /*KEY | ENABLE4*/);
458 printf("KARL - should read back as 0x03, not 60 02 00 00\n");
459 stlink_read_debug32(sl, CM3_REG_FP_CTRL);
461 for(int i = 0; i < CODE_BREAK_NUM; i++) {
462 code_breaks[i].type = 0;
463 stlink_write_debug32(sl, CM3_REG_FP_COMP0 + i * 4, 0);
467 static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
468 stm32_addr_t fpb_addr = addr & ~0x3;
469 int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
472 fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
477 for(int i = 0; i < CODE_BREAK_NUM; i++) {
478 if(fpb_addr == code_breaks[i].addr ||
479 (set && code_breaks[i].type == 0)) {
486 if(set) return -1; // Free slot not found
487 else return 0; // Breakpoint is already removed
490 struct code_hw_breakpoint* brk = &code_breaks[id];
492 brk->addr = fpb_addr;
494 if(set) brk->type |= type;
495 else brk->type &= ~type;
499 printf("clearing hw break %d\n", id);
502 stlink_write_debug32(sl, 0xe0002008 + id * 4, 0);
504 uint32_t mask = (brk->addr) | 1 | (brk->type << 30);
507 printf("setting hw break %d at %08x (%d)\n",
508 id, brk->addr, brk->type);
509 printf("reg %08x \n",
513 stlink_write_debug32(sl, 0xe0002008 + id * 4, mask);
525 struct flash_block* next;
528 static struct flash_block* flash_root;
530 static int flash_add_block(stm32_addr_t addr, unsigned length, stlink_t *sl) {
532 if(addr < FLASH_BASE || addr + length > FLASH_BASE + sl->flash_size) {
533 fprintf(stderr, "flash_add_block: incorrect bounds\n");
537 stlink_calculate_pagesize(sl, addr);
538 if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
539 fprintf(stderr, "flash_add_block: unaligned block\n");
543 struct flash_block* new = malloc(sizeof(struct flash_block));
544 new->next = flash_root;
547 new->length = length;
548 new->data = calloc(length, 1);
555 static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
556 unsigned int fit_blocks = 0, fit_length = 0;
558 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
559 /* Block: ------X------Y--------
563 * Block intersects with data, if:
567 unsigned X = fb->addr, Y = fb->addr + fb->length;
568 unsigned a = addr, b = addr + length;
570 // from start of the block
571 unsigned start = (a > X ? a : X) - X;
572 unsigned end = (b > Y ? Y : b) - X;
574 memcpy(fb->data + start, data, end - start);
577 fit_length += end - start;
581 if(fit_blocks == 0) {
582 fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
586 if(fit_length != length) {
587 fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
588 addr, length, fit_length);
589 fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
595 static int flash_go(stlink_t *sl) {
598 // Some kinds of clock settings do not allow writing to flash.
601 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
603 printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
606 unsigned length = fb->length;
607 for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
610 stlink_calculate_pagesize(sl, page);
613 printf("flash_do: page %08x\n", page);
616 if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
617 length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
627 for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
638 int serve(stlink_t *sl, st_state_t *st) {
639 int sock = socket(AF_INET, SOCK_STREAM, 0);
645 unsigned int val = 1;
646 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
648 struct sockaddr_in serv_addr;
649 memset(&serv_addr,0,sizeof(struct sockaddr_in));
650 serv_addr.sin_family = AF_INET;
651 serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
652 serv_addr.sin_port = htons(st->listen_port);
654 if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
659 if(listen(sock, 5) < 0) {
664 stlink_force_debug(sl);
666 init_code_breakpoints(sl);
667 init_data_watchpoints(sl);
669 printf("Listening at *:%d...\n", st->listen_port);
671 int client = accept(sock, NULL, NULL);
672 //signal (SIGINT, SIG_DFL);
680 printf("GDB connected.\n");
683 * To allow resetting the chip from GDB it is required to
684 * emulate attaching and detaching to target.
686 unsigned int attached = 1;
691 int status = gdb_recv_packet(client, &packet);
693 fprintf(stderr, "cannot recv: %d\n", status);
698 printf("recv: %s\n", packet);
706 if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
711 char *separator = strstr(packet, ":"), *params = "";
712 if(separator == NULL) {
713 separator = packet + strlen(packet);
715 params = separator + 1;
718 unsigned queryNameLength = (separator - &packet[1]);
719 char* queryName = calloc(queryNameLength + 1, 1);
720 strncpy(queryName, &packet[1], queryNameLength);
723 printf("query: %s;%s\n", queryName, params);
726 if(!strcmp(queryName, "Supported")) {
727 if(sl->chip_id==STM32_CHIPID_F4) {
728 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+;qXfer:features:read+");
731 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
733 } else if(!strcmp(queryName, "Xfer")) {
734 char *type, *op, *__s_addr, *s_length;
736 char *annex __attribute__((unused));
738 type = strsep(&tok, ":");
739 op = strsep(&tok, ":");
740 annex = strsep(&tok, ":");
741 __s_addr = strsep(&tok, ",");
744 unsigned addr = strtoul(__s_addr, NULL, 16),
745 length = strtoul(s_length, NULL, 16);
748 printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
749 type, op, annex, addr, length);
752 const char* data = NULL;
754 if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
755 data = current_memory_map;
757 if(!strcmp(type, "features") && !strcmp(op, "read"))
758 data = target_description_F4;
761 unsigned data_length = strlen(data);
762 if(addr + length > data_length)
763 length = data_length - addr;
768 reply = calloc(length + 2, 1);
770 strncpy(&reply[1], data, length);
773 } else if(!strncmp(queryName, "Rcmd,",4)) {
774 // Rcmd uses the wrong separator
775 char *separator = strstr(packet, ","), *params = "";
776 if(separator == NULL) {
777 separator = packet + strlen(packet);
779 params = separator + 1;
783 if (!strncmp(params,"726573756d65",12)) {// resume
785 printf("Rcmd: resume\n");
789 reply = strdup("OK");
790 } else if (!strncmp(params,"68616c74",8)) { //halt
791 reply = strdup("OK");
793 stlink_force_debug(sl);
796 printf("Rcmd: halt\n");
798 } else if (!strncmp(params,"6a7461675f7265736574",20)) { //jtag_reset
799 reply = strdup("OK");
801 stlink_jtag_reset(sl, 1);
802 stlink_jtag_reset(sl, 0);
803 stlink_force_debug(sl);
806 printf("Rcmd: jtag_reset\n");
808 } else if (!strncmp(params,"7265736574",10)) { //reset
809 reply = strdup("OK");
811 stlink_force_debug(sl);
813 init_code_breakpoints(sl);
814 init_data_watchpoints(sl);
817 printf("Rcmd: reset\n");
821 printf("Rcmd: %s\n", params);
838 char *cmdName = strtok_r(packet, ":;", ¶ms);
840 cmdName++; // vCommand -> Command
842 if(!strcmp(cmdName, "FlashErase")) {
843 char *__s_addr, *s_length;
846 __s_addr = strsep(&tok, ",");
849 unsigned addr = strtoul(__s_addr, NULL, 16),
850 length = strtoul(s_length, NULL, 16);
853 printf("FlashErase: addr:%08x,len:%04x\n",
857 if(flash_add_block(addr, length, sl) < 0) {
858 reply = strdup("E00");
860 reply = strdup("OK");
862 } else if(!strcmp(cmdName, "FlashWrite")) {
863 char *__s_addr, *data;
866 __s_addr = strsep(&tok, ":");
869 unsigned addr = strtoul(__s_addr, NULL, 16);
870 unsigned data_length = status - (data - packet);
872 // Length of decoded data cannot be more than
873 // encoded, as escapes are removed.
874 // Additional byte is reserved for alignment fix.
875 uint8_t *decoded = calloc(data_length + 1, 1);
876 unsigned dec_index = 0;
877 for(unsigned int i = 0; i < data_length; i++) {
878 if(data[i] == 0x7d) {
880 decoded[dec_index++] = data[i] ^ 0x20;
882 decoded[dec_index++] = data[i];
887 if(dec_index % 2 != 0)
891 printf("binary packet %d -> %d\n", data_length, dec_index);
894 if(flash_populate(addr, decoded, dec_index) < 0) {
895 reply = strdup("E00");
897 reply = strdup("OK");
899 } else if(!strcmp(cmdName, "FlashDone")) {
900 if(flash_go(sl) < 0) {
901 reply = strdup("E00");
903 reply = strdup("OK");
905 } else if(!strcmp(cmdName, "Kill")) {
908 reply = strdup("OK");
921 int status = gdb_check_for_interrupt(client);
923 fprintf(stderr, "cannot check for int: %d\n", status);
928 stlink_force_debug(sl);
933 if(sl->core_stat == STLINK_CORE_HALTED) {
940 reply = strdup("S05"); // TRAP
946 reply = strdup("S05"); // TRAP
951 reply = strdup("S05"); // TRAP
953 /* Stub shall reply OK if not attached. */
954 reply = strdup("OK");
959 stlink_read_all_regs(sl, ®p);
961 reply = calloc(8 * 16 + 1, 1);
962 for(int i = 0; i < 16; i++)
963 sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
968 unsigned id = strtoul(&packet[1], NULL, 16);
969 unsigned myreg = 0xDEADDEAD;
972 stlink_read_reg(sl, id, ®p);
973 myreg = htonl(regp.r[id]);
974 } else if(id == 0x19) {
975 stlink_read_reg(sl, 16, ®p);
976 myreg = htonl(regp.xpsr);
977 } else if(id == 0x1A) {
978 stlink_read_reg(sl, 17, ®p);
979 myreg = htonl(regp.main_sp);
980 } else if(id == 0x1B) {
981 stlink_read_reg(sl, 18, ®p);
982 myreg = htonl(regp.process_sp);
983 } else if(id == 0x1C) {
984 stlink_read_unsupported_reg(sl, id, ®p);
985 myreg = htonl(regp.control);
986 } else if(id == 0x1D) {
987 stlink_read_unsupported_reg(sl, id, ®p);
988 myreg = htonl(regp.faultmask);
989 } else if(id == 0x1E) {
990 stlink_read_unsupported_reg(sl, id, ®p);
991 myreg = htonl(regp.basepri);
992 } else if(id == 0x1F) {
993 stlink_read_unsupported_reg(sl, id, ®p);
994 myreg = htonl(regp.primask);
995 } else if(id >= 0x20 && id < 0x40) {
996 stlink_read_unsupported_reg(sl, id, ®p);
997 myreg = htonl(regp.s[id-0x20]);
998 } else if(id == 0x40) {
999 stlink_read_unsupported_reg(sl, id, ®p);
1000 myreg = htonl(regp.fpscr);
1002 reply = strdup("E00");
1005 reply = calloc(8 + 1, 1);
1006 sprintf(reply, "%08x", myreg);
1012 char* s_reg = &packet[1];
1013 char* s_value = strstr(&packet[1], "=") + 1;
1015 unsigned reg = strtoul(s_reg, NULL, 16);
1016 unsigned value = strtoul(s_value, NULL, 16);
1019 stlink_write_reg(sl, ntohl(value), reg);
1020 } else if(reg == 0x19) {
1021 stlink_write_reg(sl, ntohl(value), 16);
1022 } else if(reg == 0x1A) {
1023 stlink_write_reg(sl, ntohl(value), 17);
1024 } else if(reg == 0x1B) {
1025 stlink_write_reg(sl, ntohl(value), 18);
1026 } else if(reg == 0x1C) {
1027 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1028 } else if(reg == 0x1D) {
1029 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1030 } else if(reg == 0x1E) {
1031 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1032 } else if(reg == 0x1F) {
1033 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1034 } else if(reg >= 0x20 && reg < 0x40) {
1035 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1036 } else if(reg == 0x40) {
1037 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1039 reply = strdup("E00");
1043 reply = strdup("OK");
1050 for(int i = 0; i < 16; i++) {
1052 strncpy(str, &packet[1 + i * 8], 8);
1053 uint32_t reg = strtoul(str, NULL, 16);
1054 stlink_write_reg(sl, ntohl(reg), i);
1057 reply = strdup("OK");
1061 char* s_start = &packet[1];
1062 char* s_count = strstr(&packet[1], ",") + 1;
1064 stm32_addr_t start = strtoul(s_start, NULL, 16);
1065 unsigned count = strtoul(s_count, NULL, 16);
1067 unsigned adj_start = start % 4;
1068 unsigned count_rnd = (count + adj_start + 4 - 1) / 4 * 4;
1070 stlink_read_mem32(sl, start - adj_start, count_rnd);
1072 reply = calloc(count * 2 + 1, 1);
1073 for(unsigned int i = 0; i < count; i++) {
1074 reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
1075 reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
1082 char* s_start = &packet[1];
1083 char* s_count = strstr(&packet[1], ",") + 1;
1084 char* hexdata = strstr(packet, ":") + 1;
1086 stm32_addr_t start = strtoul(s_start, NULL, 16);
1087 unsigned count = strtoul(s_count, NULL, 16);
1090 unsigned align_count = 4 - start % 4;
1091 if (align_count > count) align_count = count;
1092 for(unsigned int i = 0; i < align_count; i ++) {
1093 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1094 uint8_t byte = strtoul(hex, NULL, 16);
1095 sl->q_buf[i] = byte;
1097 stlink_write_mem8(sl, start, align_count);
1098 start += align_count;
1099 count -= align_count;
1100 hexdata += 2*align_count;
1103 if(count - count % 4) {
1104 unsigned aligned_count = count - count % 4;
1106 for(unsigned int i = 0; i < aligned_count; i ++) {
1107 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1108 uint8_t byte = strtoul(hex, NULL, 16);
1109 sl->q_buf[i] = byte;
1111 stlink_write_mem32(sl, start, aligned_count);
1112 count -= aligned_count;
1113 start += aligned_count;
1114 hexdata += 2*aligned_count;
1118 for(unsigned int i = 0; i < count; i ++) {
1119 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1120 uint8_t byte = strtoul(hex, NULL, 16);
1121 sl->q_buf[i] = byte;
1123 stlink_write_mem8(sl, start, count);
1125 reply = strdup("OK");
1131 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1132 stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1134 switch (packet[1]) {
1136 if(update_code_breakpoint(sl, addr, 1) < 0) {
1137 reply = strdup("E00");
1139 reply = strdup("OK");
1143 case '2': // insert write watchpoint
1144 case '3': // insert read watchpoint
1145 case '4': // insert access watchpoint
1148 if(packet[1] == '2') {
1150 } else if(packet[1] == '3') {
1156 if(add_data_watchpoint(sl, wf, addr, len) < 0) {
1157 reply = strdup("E00");
1159 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]) {
1175 case '1': // remove breakpoint
1176 update_code_breakpoint(sl, addr, 0);
1177 reply = strdup("OK");
1180 case '2' : // remove write watchpoint
1181 case '3' : // remove read watchpoint
1182 case '4' : // remove access watchpoint
1183 if(delete_data_watchpoint(sl, addr) < 0) {
1184 reply = strdup("E00");
1186 reply = strdup("OK");
1198 * Enter extended mode which allows restarting.
1199 * We do support that always.
1203 * Also, set to persistent mode
1204 * to allow GDB disconnect.
1208 reply = strdup("OK");
1214 /* Reset the core. */
1217 init_code_breakpoints(sl);
1218 init_data_watchpoints(sl);
1222 reply = strdup("OK");
1233 printf("send: %s\n", reply);
1236 int result = gdb_send_packet(client, reply);
1238 fprintf(stderr, "cannot send: %d\n", result);