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.
13 #include <sys/types.h>
14 #include <sys/socket.h>
15 #include <netinet/in.h>
16 #include <arpa/inet.h>
19 #include <stlink-common.h>
21 #include "gdb-remote.h"
23 #define FLASH_BASE 0x08000000
24 #define FLASH_PAGE (sl->flash_pgsz)
25 #define FLASH_PAGE_MASK (~((1 << 10) - 1))
26 #define FLASH_SIZE (FLASH_PAGE * 128)
28 volatile int do_exit = 0;
34 static const char hex[] = "0123456789abcdef";
36 static const char* current_memory_map = NULL;
39 * Chip IDs are explained in the appropriate programming manual for the
40 * DBGMCU_IDCODE register (0xE0042000)
43 #define CORE_M3_R1 0x1BA00477
44 #define CORE_M3_R2 0x4BA00477
45 #define CORE_M4_R0 0x2BA01477
50 uint32_t flash_size_reg;
51 uint32_t max_flash_size, flash_pagesize;
53 uint32_t bootrom_base, bootrom_size;
55 { 0x410, "F1 Medium-density device", 0x1ffff7e0,
56 0x20000, 0x400, 0x5000, 0x1ffff000, 0x800 }, // table 2, pm0063
57 { 0x411, "F2 device", 0, /* No flash size register found in the docs*/
58 0x100000, 0x20000, 0x20000, 0x1fff0000, 0x7800 }, // table 1, pm0059
59 { 0x412, "F1 Low-density device", 0x1ffff7e0,
60 0x8000, 0x400, 0x2800, 0x1ffff000, 0x800 }, // table 1, pm0063
61 { 0x413, "F4 device", 0x1FFF7A10,
62 0x100000, 0x20000, 0x30000, 0x1fff0000, 0x7800 }, // table 1, pm0081
63 { 0x414, "F1 High-density device", 0x1ffff7e0,
64 0x80000, 0x800, 0x10000, 0x1ffff000, 0x800 }, // table 3 pm0063
65 // This ignores the EEPROM! (and uses the page erase size,
66 // not the sector write protection...)
67 { 0x416, "L1 Med-density device", 0x1FF8004C, // table 1, pm0062
68 0x20000, 0x100, 0x4000, 0x1ff00000, 0x1000 },
69 { 0x418, "F1 Connectivity line device", 0x1ffff7e0,
70 0x40000, 0x800, 0x10000, 0x1fffb000, 0x4800 },
71 { 0x420, "F1 Medium-density value line device", 0x1ffff7e0,
72 0x20000, 0x400, 0x2000, 0x1ffff000, 0x800 },
73 { 0x428, "F1 High-density value line device", 0x1ffff7e0,
74 0x80000, 0x800, 0x8000, 0x1ffff000, 0x800 },
75 { 0x430, "F1 XL-density device", 0x1ffff7e0, // pm0068
76 0x100000, 0x800, 0x18000, 0x1fffe000, 0x1800 },
80 int serve(stlink_t *sl, int port);
81 char* make_memory_map(const struct chip_params *params, uint32_t flash_size);
83 int main(int argc, char** argv) {
88 const char * HelpStr = "\nUsage:\n"
89 "\tst-util [Arguments]\n"
90 "\tArguments (no more than 2):\n"
91 "\t\t<Port>: Port. Default: 4242.\n"
92 "\t\t{usb|sgauto|/dev/sgX}: Transport, "
93 "where X = {0, 1, 2, ...}. Default: USB.\n"
96 "\t\tst-util sgauto\n"
97 "\t\tst-util 1234 usb\n"
98 "\t\tst-util /dev/sgX 1234\n"
99 "\t\tst-util 1234 /dev/sgX\n";
102 // Parsing the arguments of command line ...
104 if (argc == 1 || argc > 3) {
105 fprintf(stderr, HelpStr, NULL);
109 for(int a = 1; a < argc; a++) {
112 int p = atoi(argv[a]);
113 if (p < 0 || p > 0xFFFF) {
114 fprintf(stderr, "Invalid port\n");
115 fprintf(stderr, HelpStr, NULL);
118 if (p > 0 && port == 0) {port = p; continue;}
123 if (!strcmp(argv[a], "usb")) {
124 if (sl != NULL) return 1;
125 sl = stlink_open_usb(10);
126 if(sl == NULL) return 1;
131 if (!strncmp(argv[a], "/dev/sgX", 7)) {
132 if(!CONFIG_USE_LIBSG) {
133 fprintf(stderr, "libsg not use\n");
136 if (sl != NULL) return 1;
137 sl = stlink_quirk_open(argv[a], 0);
138 if(sl == NULL) return 1;
143 if (!strcmp(argv[a], "sgauto")) {
144 if(!CONFIG_USE_LIBSG) {
145 fprintf(stderr, "libsg not use\n");
149 // Search ST-LINK (from /dev/sg0 to /dev/sg99)
150 for(int DevNum = 0; DevNum <= 99; DevNum++)
152 if(sl != NULL) return 1;
154 char DevName[] = "/dev/sgX";
155 DevName[7] = DevNum + '0';
156 if ( !access(DevName, F_OK) )
157 sl = stlink_quirk_open(DevName, 0);
160 char DevName[] = "/dev/sgXY";
161 DevName[7] = DevNum/10 + '0';
162 DevName[8] = DevNum%10 + '0';
163 if ( !access(DevName, F_OK) )
164 sl = stlink_quirk_open(DevName, 0);
169 if(sl == NULL) return 1;
174 fprintf(stderr, "Invalid argumets\n");
175 fprintf(stderr, HelpStr, NULL);
179 // Default transport: USB
180 if (sl == NULL) sl = stlink_open_usb(10);
181 // Default port: 4242
182 if (port == 0) port = 4242;
185 if (sl == NULL) return 1;
187 if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) {
188 stlink_exit_dfu_mode(sl);
191 if(stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE) {
192 stlink_enter_swd_mode(sl);
195 uint32_t chip_id = stlink_chip_id(sl);
196 uint32_t core_id = stlink_core_id(sl);
198 /* Fix chip_id for F4 */
199 if (((chip_id & 0xFFF) == 0x411) && (core_id == CORE_M4_R0)) {
200 printf("Fixing wrong chip_id for STM32F4 Rev A errata\n");
204 printf("Chip ID is %08x, Core ID is %08x.\n", chip_id, core_id);
206 const struct chip_params* params = NULL;
208 for(int i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
209 if(devices[i].chip_id == (chip_id & 0xFFF)) {
210 params = &devices[i];
216 fprintf(stderr, "Cannot recognize the connected device!\n");
220 printf("Device connected: %s\n", params->description);
221 printf("Device parameters: SRAM: 0x%x bytes, Flash: up to 0x%x bytes in pages of 0x%x bytes\n",
222 params->sram_size, params->max_flash_size, params->flash_pagesize);
224 FLASH_PAGE = params->flash_pagesize;
228 stlink_read_mem32(sl, params->flash_size_reg, 4);
229 flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
231 printf("Flash size is %d KiB.\n", flash_size);
232 // memory map is in 1k blocks.
233 current_memory_map = make_memory_map(params, flash_size * 0x400);
235 while(serve(sl, port) == 0);
237 /* Switch back to mass storage mode before closing. */
239 stlink_exit_debug_mode(sl);
245 static const char* const memory_map_template =
246 "<?xml version=\"1.0\"?>"
247 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
248 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
250 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%x\"/>" // code = sram, bootrom or flash; flash is bigger
251 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%x\"/>" // sram 8k
252 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%x\">"
253 " <property name=\"blocksize\">0x%x</property>"
255 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
256 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
257 " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%x\"/>" // bootrom
258 " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x8\"/>" // option byte area
261 char* make_memory_map(const struct chip_params *params, uint32_t flash_size) {
262 /* This will be freed in serve() */
263 char* map = malloc(4096);
266 snprintf(map, 4096, memory_map_template,
269 flash_size, params->flash_pagesize,
270 params->bootrom_base, params->bootrom_size);
277 * DWT_COMP0 0xE0001020
278 * DWT_MASK0 0xE0001024
279 * DWT_FUNCTION0 0xE0001028
280 * DWT_COMP1 0xE0001030
281 * DWT_MASK1 0xE0001034
282 * DWT_FUNCTION1 0xE0001038
283 * DWT_COMP2 0xE0001040
284 * DWT_MASK2 0xE0001044
285 * DWT_FUNCTION2 0xE0001048
286 * DWT_COMP3 0xE0001050
287 * DWT_MASK3 0xE0001054
288 * DWT_FUNCTION3 0xE0001058
291 #define DATA_WATCH_NUM 4
293 enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
295 struct code_hw_watchpoint {
301 struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
303 static void init_data_watchpoints(stlink_t *sl) {
305 printf("init watchpoints\n");
308 // set trcena in debug command to turn on dwt unit
309 stlink_read_mem32(sl, 0xE000EDFC, 4);
311 stlink_write_mem32(sl, 0xE000EDFC, 4);
313 // make sure all watchpoints are cleared
314 memset(sl->q_buf, 0, 4);
315 for(int i = 0; i < DATA_WATCH_NUM; i++) {
316 data_watches[i].fun = WATCHDISABLED;
317 stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
321 static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
327 // find a free watchpoint
337 if((mask != -1) && (mask < 16)) {
338 for(i = 0; i < DATA_WATCH_NUM; i++) {
339 // is this an empty slot ?
340 if(data_watches[i].fun == WATCHDISABLED) {
342 printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
345 data_watches[i].fun = wf;
346 data_watches[i].addr = addr;
347 data_watches[i].mask = mask;
349 // insert comparator address
350 sl->q_buf[0] = (addr & 0xff);
351 sl->q_buf[1] = ((addr >> 8) & 0xff);
352 sl->q_buf[2] = ((addr >> 16) & 0xff);
353 sl->q_buf[3] = ((addr >> 24) & 0xff);
355 stlink_write_mem32(sl, 0xE0001020 + i * 16, 4);
358 memset(sl->q_buf, 0, 4);
360 stlink_write_mem32(sl, 0xE0001024 + i * 16, 4);
363 memset(sl->q_buf, 0, 4);
365 stlink_write_mem32(sl, 0xE0001028 + i * 16, 4);
367 // just to make sure the matched bit is clear !
368 stlink_read_mem32(sl, 0xE0001028 + i * 16, 4);
375 printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
380 static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
384 for(i = 0 ; i < DATA_WATCH_NUM; i++) {
385 if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
387 printf("delete watchpoint %d addr %x\n", i, addr);
390 memset(sl->q_buf, 0, 4);
391 data_watches[i].fun = WATCHDISABLED;
392 stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
399 printf("failure: delete watchpoint addr %x\n", addr);
405 #define CODE_BREAK_NUM 6
406 #define CODE_BREAK_LOW 0x01
407 #define CODE_BREAK_HIGH 0x02
409 struct code_hw_breakpoint {
414 struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
416 static void init_code_breakpoints(stlink_t *sl) {
417 memset(sl->q_buf, 0, 4);
418 sl->q_buf[0] = 0x03; // KEY | ENABLE
419 stlink_write_mem32(sl, CM3_REG_FP_CTRL, 4);
420 printf("KARL - should read back as 0x03, not 60 02 00 00\n");
421 stlink_read_mem32(sl, CM3_REG_FP_CTRL, 4);
423 memset(sl->q_buf, 0, 4);
424 for(int i = 0; i < CODE_BREAK_NUM; i++) {
425 code_breaks[i].type = 0;
426 stlink_write_mem32(sl, CM3_REG_FP_COMP0 + i * 4, 4);
430 static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
431 stm32_addr_t fpb_addr = addr & ~0x3;
432 int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
435 fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
440 for(int i = 0; i < CODE_BREAK_NUM; i++) {
441 if(fpb_addr == code_breaks[i].addr ||
442 (set && code_breaks[i].type == 0)) {
449 if(set) return -1; // Free slot not found
450 else return 0; // Breakpoint is already removed
453 struct code_hw_breakpoint* brk = &code_breaks[id];
455 brk->addr = fpb_addr;
457 if(set) brk->type |= type;
458 else brk->type &= ~type;
460 memset(sl->q_buf, 0, 4);
464 printf("clearing hw break %d\n", id);
467 stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
469 sl->q_buf[0] = ( brk->addr & 0xff) | 1;
470 sl->q_buf[1] = ((brk->addr >> 8) & 0xff);
471 sl->q_buf[2] = ((brk->addr >> 16) & 0xff);
472 sl->q_buf[3] = ((brk->addr >> 24) & 0xff) | (brk->type << 6);
475 printf("setting hw break %d at %08x (%d)\n",
476 id, brk->addr, brk->type);
477 printf("reg %02x %02x %02x %02x\n",
478 sl->q_buf[3], sl->q_buf[2], sl->q_buf[1], sl->q_buf[0]);
481 stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
493 struct flash_block* next;
496 static struct flash_block* flash_root;
498 static int flash_add_block(stm32_addr_t addr, unsigned length,
500 if(addr < FLASH_BASE || addr + length > FLASH_BASE + FLASH_SIZE) {
501 fprintf(stderr, "flash_add_block: incorrect bounds\n");
505 if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
506 fprintf(stderr, "flash_add_block: unaligned block\n");
510 struct flash_block* new = malloc(sizeof(struct flash_block));
511 new->next = flash_root;
514 new->length = length;
515 new->data = calloc(length, 1);
522 static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
523 int fit_blocks = 0, fit_length = 0;
525 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
526 /* Block: ------X------Y--------
530 * Block intersects with data, if:
534 unsigned X = fb->addr, Y = fb->addr + fb->length;
535 unsigned a = addr, b = addr + length;
537 // from start of the block
538 unsigned start = (a > X ? a : X) - X;
539 unsigned end = (b > Y ? Y : b) - X;
541 memcpy(fb->data + start, data, end - start);
544 fit_length += end - start;
548 if(fit_blocks == 0) {
549 fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
553 if(fit_length != length) {
554 fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
555 addr, length, fit_length);
556 fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
562 static int flash_go(stlink_t *sl) {
565 // Some kinds of clock settings do not allow writing to flash.
568 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
570 printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
573 unsigned length = fb->length;
574 for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
576 printf("flash_do: page %08x\n", page);
579 stlink_erase_flash_page(sl, page);
581 if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
582 length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
593 for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
604 int serve(stlink_t *sl, int port) {
605 int sock = socket(AF_INET, SOCK_STREAM, 0);
611 unsigned int val = 1;
612 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
614 struct sockaddr_in serv_addr = {0};
615 serv_addr.sin_family = AF_INET;
616 serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
617 serv_addr.sin_port = htons(port);
619 if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
624 if(listen(sock, 5) < 0) {
629 stlink_force_debug(sl);
631 init_code_breakpoints(sl);
632 init_data_watchpoints(sl);
634 printf("Listening at *:%d...\n", port);
636 (void) signal (SIGINT, ctrl_c);
637 int client = accept(sock, NULL, NULL);
638 signal (SIGINT, SIG_DFL);
646 printf("GDB connected.\n");
649 * To allow resetting the chip from GDB it is required to
650 * emulate attaching and detaching to target.
652 unsigned int attached = 1;
657 int status = gdb_recv_packet(client, &packet);
659 fprintf(stderr, "cannot recv: %d\n", status);
664 printf("recv: %s\n", packet);
672 if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
677 char *separator = strstr(packet, ":"), *params = "";
678 if(separator == NULL) {
679 separator = packet + strlen(packet);
681 params = separator + 1;
684 unsigned queryNameLength = (separator - &packet[1]);
685 char* queryName = calloc(queryNameLength + 1, 1);
686 strncpy(queryName, &packet[1], queryNameLength);
689 printf("query: %s;%s\n", queryName, params);
692 if(!strcmp(queryName, "Supported")) {
693 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
694 } else if(!strcmp(queryName, "Xfer")) {
695 char *type, *op, *s_addr, *s_length;
697 char *annex __attribute__((unused));
699 type = strsep(&tok, ":");
700 op = strsep(&tok, ":");
701 annex = strsep(&tok, ":");
702 s_addr = strsep(&tok, ",");
705 unsigned addr = strtoul(s_addr, NULL, 16),
706 length = strtoul(s_length, NULL, 16);
709 printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
710 type, op, annex, addr, length);
713 const char* data = NULL;
715 if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
716 data = current_memory_map;
719 unsigned data_length = strlen(data);
720 if(addr + length > data_length)
721 length = data_length - addr;
726 reply = calloc(length + 2, 1);
728 strncpy(&reply[1], data, length);
743 char *cmdName = strtok_r(packet, ":;", ¶ms);
745 cmdName++; // vCommand -> Command
747 if(!strcmp(cmdName, "FlashErase")) {
748 char *s_addr, *s_length;
751 s_addr = strsep(&tok, ",");
754 unsigned addr = strtoul(s_addr, NULL, 16),
755 length = strtoul(s_length, NULL, 16);
758 printf("FlashErase: addr:%08x,len:%04x\n",
762 if(flash_add_block(addr, length, sl) < 0) {
763 reply = strdup("E00");
765 reply = strdup("OK");
767 } else if(!strcmp(cmdName, "FlashWrite")) {
771 s_addr = strsep(&tok, ":");
774 unsigned addr = strtoul(s_addr, NULL, 16);
775 unsigned data_length = status - (data - packet);
777 // Length of decoded data cannot be more than
778 // encoded, as escapes are removed.
779 // Additional byte is reserved for alignment fix.
780 uint8_t *decoded = calloc(data_length + 1, 1);
781 unsigned dec_index = 0;
782 for(int i = 0; i < data_length; i++) {
783 if(data[i] == 0x7d) {
785 decoded[dec_index++] = data[i] ^ 0x20;
787 decoded[dec_index++] = data[i];
792 if(dec_index % 2 != 0)
796 printf("binary packet %d -> %d\n", data_length, dec_index);
799 if(flash_populate(addr, decoded, dec_index) < 0) {
800 reply = strdup("E00");
802 reply = strdup("OK");
804 } else if(!strcmp(cmdName, "FlashDone")) {
805 if(flash_go(sl) < 0) {
806 reply = strdup("E00");
808 reply = strdup("OK");
810 } else if(!strcmp(cmdName, "Kill")) {
813 reply = strdup("OK");
826 int status = gdb_check_for_interrupt(client);
828 fprintf(stderr, "cannot check for int: %d\n", status);
833 stlink_force_debug(sl);
838 if(sl->core_stat == STLINK_CORE_HALTED) {
845 reply = strdup("S05"); // TRAP
851 reply = strdup("S05"); // TRAP
856 reply = strdup("S05"); // TRAP
858 /* Stub shall reply OK if not attached. */
859 reply = strdup("OK");
864 stlink_read_all_regs(sl, ®p);
866 reply = calloc(8 * 16 + 1, 1);
867 for(int i = 0; i < 16; i++)
868 sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
873 unsigned id = strtoul(&packet[1], NULL, 16);
874 unsigned myreg = 0xDEADDEAD;
877 stlink_read_reg(sl, id, ®p);
878 myreg = htonl(regp.r[id]);
879 } else if(id == 0x19) {
880 stlink_read_reg(sl, 16, ®p);
881 myreg = htonl(regp.xpsr);
883 reply = strdup("E00");
886 reply = calloc(8 + 1, 1);
887 sprintf(reply, "%08x", myreg);
893 char* s_reg = &packet[1];
894 char* s_value = strstr(&packet[1], "=") + 1;
896 unsigned reg = strtoul(s_reg, NULL, 16);
897 unsigned value = strtoul(s_value, NULL, 16);
900 stlink_write_reg(sl, ntohl(value), reg);
901 } else if(reg == 0x19) {
902 stlink_write_reg(sl, ntohl(value), 16);
904 reply = strdup("E00");
908 reply = strdup("OK");
915 for(int i = 0; i < 16; i++) {
917 strncpy(str, &packet[1 + i * 8], 8);
918 uint32_t reg = strtoul(str, NULL, 16);
919 stlink_write_reg(sl, ntohl(reg), i);
922 reply = strdup("OK");
926 char* s_start = &packet[1];
927 char* s_count = strstr(&packet[1], ",") + 1;
929 stm32_addr_t start = strtoul(s_start, NULL, 16);
930 unsigned count = strtoul(s_count, NULL, 16);
932 unsigned adj_start = start % 4;
934 stlink_read_mem32(sl, start - adj_start, (count % 4 == 0) ?
935 count : count + 4 - (count % 4));
937 reply = calloc(count * 2 + 1, 1);
938 for(int i = 0; i < count; i++) {
939 reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
940 reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
947 char* s_start = &packet[1];
948 char* s_count = strstr(&packet[1], ",") + 1;
949 char* hexdata = strstr(packet, ":") + 1;
951 stm32_addr_t start = strtoul(s_start, NULL, 16);
952 unsigned count = strtoul(s_count, NULL, 16);
954 for(int i = 0; i < count; i ++) {
955 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
956 uint8_t byte = strtoul(hex, NULL, 16);
960 if((count % 4) == 0 && (start % 4) == 0) {
961 stlink_write_mem32(sl, start, count);
963 stlink_write_mem8(sl, start, count);
966 reply = strdup("OK");
973 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
974 stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
978 if(update_code_breakpoint(sl, addr, 1) < 0) {
979 reply = strdup("E00");
981 reply = strdup("OK");
985 case '2': // insert write watchpoint
986 case '3': // insert read watchpoint
987 case '4': // insert access watchpoint
990 if(packet[1] == '2') {
992 } else if(packet[1] == '3') {
996 if(add_data_watchpoint(sl, wf, addr, len) < 0) {
997 reply = strdup("E00");
999 reply = strdup("OK");
1012 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1013 //stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1015 switch (packet[1]) {
1016 case '1': // remove breakpoint
1017 update_code_breakpoint(sl, addr, 0);
1018 reply = strdup("OK");
1021 case '2' : // remove write watchpoint
1022 case '3' : // remove read watchpoint
1023 case '4' : // remove access watchpoint
1024 if(delete_data_watchpoint(sl, addr) < 0) {
1025 reply = strdup("E00");
1027 reply = strdup("OK");
1039 * Enter extended mode which allows restarting.
1040 * We do support that always.
1043 reply = strdup("OK");
1049 /* Reset the core. */
1052 init_code_breakpoints(sl);
1053 init_data_watchpoints(sl);
1057 reply = strdup("OK");
1068 printf("send: %s\n", reply);
1071 int result = gdb_send_packet(client, reply);
1073 fprintf(stderr, "cannot send: %d\n", result);