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 fprintf(stderr, "Invalid argumets\n");
124 fprintf(stderr, HelpStr, NULL);
129 if (!strcmp(argv[a], "usb")) {
130 sl = stlink_open_usb(10);
131 if(sl == NULL) return 1;
136 if (!strncmp(argv[a], "/dev/sgX", 7)) {
137 if(!CONFIG_USE_LIBSG) {
138 fprintf(stderr, "libsg not use\n");
141 sl = stlink_quirk_open(argv[a], 0);
142 if(sl == NULL) return 1;
147 if (!strcmp(argv[a], "sgauto")) {
148 if(!CONFIG_USE_LIBSG) {
149 fprintf(stderr, "libsg not use\n");
153 // Search ST-LINK (from /dev/sg0 to /dev/sg99)
154 for(int DevNum = 0; DevNum <= 99; DevNum++)
157 char DevName[] = "/dev/sgX";
158 DevName[7] = DevNum + '0';
159 if ( !access(DevName, F_OK) )
160 sl = stlink_quirk_open(DevName, 0);
163 char DevName[] = "/dev/sgXY";
164 DevName[7] = DevNum/10 + '0';
165 DevName[8] = DevNum%10 + '0';
166 if ( !access(DevName, F_OK) )
167 sl = stlink_quirk_open(DevName, 0);
169 if (sl != NULL) break;
172 if(sl == NULL) return 1;
177 fprintf(stderr, "Invalid argumets\n");
178 fprintf(stderr, HelpStr, NULL);
182 // Default transport: USB
183 if (sl == NULL) sl = stlink_open_usb(10);
184 // Default port: 4242
185 if (port == 0) port = 4242;
190 if (sl == NULL) return 1;
192 if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) {
193 stlink_exit_dfu_mode(sl);
196 if(stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE) {
197 stlink_enter_swd_mode(sl);
200 uint32_t chip_id = stlink_chip_id(sl);
201 uint32_t core_id = stlink_core_id(sl);
203 /* Fix chip_id for F4 */
204 if (((chip_id & 0xFFF) == 0x411) && (core_id == CORE_M4_R0)) {
205 printf("Fixing wrong chip_id for STM32F4 Rev A errata\n");
209 printf("Chip ID is %08x, Core ID is %08x.\n", chip_id, core_id);
211 const struct chip_params* params = NULL;
213 for(int i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
214 if(devices[i].chip_id == (chip_id & 0xFFF)) {
215 params = &devices[i];
221 fprintf(stderr, "Cannot recognize the connected device!\n");
225 printf("Device connected: %s\n", params->description);
226 printf("Device parameters: SRAM: 0x%x bytes, Flash: up to 0x%x bytes in pages of 0x%x bytes\n",
227 params->sram_size, params->max_flash_size, params->flash_pagesize);
229 FLASH_PAGE = params->flash_pagesize;
233 stlink_read_mem32(sl, params->flash_size_reg, 4);
234 flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
236 printf("Flash size is %d KiB.\n", flash_size);
237 // memory map is in 1k blocks.
238 current_memory_map = make_memory_map(params, flash_size * 0x400);
240 while(serve(sl, port) == 0);
242 /* Switch back to mass storage mode before closing. */
244 stlink_exit_debug_mode(sl);
250 static const char* const memory_map_template =
251 "<?xml version=\"1.0\"?>"
252 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
253 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
255 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%x\"/>" // code = sram, bootrom or flash; flash is bigger
256 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%x\"/>" // sram 8k
257 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%x\">"
258 " <property name=\"blocksize\">0x%x</property>"
260 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
261 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
262 " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%x\"/>" // bootrom
263 " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x8\"/>" // option byte area
266 char* make_memory_map(const struct chip_params *params, uint32_t flash_size) {
267 /* This will be freed in serve() */
268 char* map = malloc(4096);
271 snprintf(map, 4096, memory_map_template,
274 flash_size, params->flash_pagesize,
275 params->bootrom_base, params->bootrom_size);
282 * DWT_COMP0 0xE0001020
283 * DWT_MASK0 0xE0001024
284 * DWT_FUNCTION0 0xE0001028
285 * DWT_COMP1 0xE0001030
286 * DWT_MASK1 0xE0001034
287 * DWT_FUNCTION1 0xE0001038
288 * DWT_COMP2 0xE0001040
289 * DWT_MASK2 0xE0001044
290 * DWT_FUNCTION2 0xE0001048
291 * DWT_COMP3 0xE0001050
292 * DWT_MASK3 0xE0001054
293 * DWT_FUNCTION3 0xE0001058
296 #define DATA_WATCH_NUM 4
298 enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
300 struct code_hw_watchpoint {
306 struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
308 static void init_data_watchpoints(stlink_t *sl) {
310 printf("init watchpoints\n");
313 // set trcena in debug command to turn on dwt unit
314 stlink_read_mem32(sl, 0xE000EDFC, 4);
316 stlink_write_mem32(sl, 0xE000EDFC, 4);
318 // make sure all watchpoints are cleared
319 memset(sl->q_buf, 0, 4);
320 for(int i = 0; i < DATA_WATCH_NUM; i++) {
321 data_watches[i].fun = WATCHDISABLED;
322 stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
326 static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
332 // find a free watchpoint
342 if((mask != -1) && (mask < 16)) {
343 for(i = 0; i < DATA_WATCH_NUM; i++) {
344 // is this an empty slot ?
345 if(data_watches[i].fun == WATCHDISABLED) {
347 printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
350 data_watches[i].fun = wf;
351 data_watches[i].addr = addr;
352 data_watches[i].mask = mask;
354 // insert comparator address
355 sl->q_buf[0] = (addr & 0xff);
356 sl->q_buf[1] = ((addr >> 8) & 0xff);
357 sl->q_buf[2] = ((addr >> 16) & 0xff);
358 sl->q_buf[3] = ((addr >> 24) & 0xff);
360 stlink_write_mem32(sl, 0xE0001020 + i * 16, 4);
363 memset(sl->q_buf, 0, 4);
365 stlink_write_mem32(sl, 0xE0001024 + i * 16, 4);
368 memset(sl->q_buf, 0, 4);
370 stlink_write_mem32(sl, 0xE0001028 + i * 16, 4);
372 // just to make sure the matched bit is clear !
373 stlink_read_mem32(sl, 0xE0001028 + i * 16, 4);
380 printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
385 static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
389 for(i = 0 ; i < DATA_WATCH_NUM; i++) {
390 if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
392 printf("delete watchpoint %d addr %x\n", i, addr);
395 memset(sl->q_buf, 0, 4);
396 data_watches[i].fun = WATCHDISABLED;
397 stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
404 printf("failure: delete watchpoint addr %x\n", addr);
410 #define CODE_BREAK_NUM 6
411 #define CODE_BREAK_LOW 0x01
412 #define CODE_BREAK_HIGH 0x02
414 struct code_hw_breakpoint {
419 struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
421 static void init_code_breakpoints(stlink_t *sl) {
422 memset(sl->q_buf, 0, 4);
423 sl->q_buf[0] = 0x03; // KEY | ENABLE
424 stlink_write_mem32(sl, CM3_REG_FP_CTRL, 4);
425 printf("KARL - should read back as 0x03, not 60 02 00 00\n");
426 stlink_read_mem32(sl, CM3_REG_FP_CTRL, 4);
428 memset(sl->q_buf, 0, 4);
429 for(int i = 0; i < CODE_BREAK_NUM; i++) {
430 code_breaks[i].type = 0;
431 stlink_write_mem32(sl, CM3_REG_FP_COMP0 + i * 4, 4);
435 static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
436 stm32_addr_t fpb_addr = addr & ~0x3;
437 int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
440 fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
445 for(int i = 0; i < CODE_BREAK_NUM; i++) {
446 if(fpb_addr == code_breaks[i].addr ||
447 (set && code_breaks[i].type == 0)) {
454 if(set) return -1; // Free slot not found
455 else return 0; // Breakpoint is already removed
458 struct code_hw_breakpoint* brk = &code_breaks[id];
460 brk->addr = fpb_addr;
462 if(set) brk->type |= type;
463 else brk->type &= ~type;
465 memset(sl->q_buf, 0, 4);
469 printf("clearing hw break %d\n", id);
472 stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
474 sl->q_buf[0] = ( brk->addr & 0xff) | 1;
475 sl->q_buf[1] = ((brk->addr >> 8) & 0xff);
476 sl->q_buf[2] = ((brk->addr >> 16) & 0xff);
477 sl->q_buf[3] = ((brk->addr >> 24) & 0xff) | (brk->type << 6);
480 printf("setting hw break %d at %08x (%d)\n",
481 id, brk->addr, brk->type);
482 printf("reg %02x %02x %02x %02x\n",
483 sl->q_buf[3], sl->q_buf[2], sl->q_buf[1], sl->q_buf[0]);
486 stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
498 struct flash_block* next;
501 static struct flash_block* flash_root;
503 static int flash_add_block(stm32_addr_t addr, unsigned length,
505 if(addr < FLASH_BASE || addr + length > FLASH_BASE + FLASH_SIZE) {
506 fprintf(stderr, "flash_add_block: incorrect bounds\n");
510 if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
511 fprintf(stderr, "flash_add_block: unaligned block\n");
515 struct flash_block* new = malloc(sizeof(struct flash_block));
516 new->next = flash_root;
519 new->length = length;
520 new->data = calloc(length, 1);
527 static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
528 int fit_blocks = 0, fit_length = 0;
530 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
531 /* Block: ------X------Y--------
535 * Block intersects with data, if:
539 unsigned X = fb->addr, Y = fb->addr + fb->length;
540 unsigned a = addr, b = addr + length;
542 // from start of the block
543 unsigned start = (a > X ? a : X) - X;
544 unsigned end = (b > Y ? Y : b) - X;
546 memcpy(fb->data + start, data, end - start);
549 fit_length += end - start;
553 if(fit_blocks == 0) {
554 fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
558 if(fit_length != length) {
559 fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
560 addr, length, fit_length);
561 fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
567 static int flash_go(stlink_t *sl) {
570 // Some kinds of clock settings do not allow writing to flash.
573 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
575 printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
578 unsigned length = fb->length;
579 for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
581 printf("flash_do: page %08x\n", page);
584 stlink_erase_flash_page(sl, page);
586 if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
587 length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
598 for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
609 int serve(stlink_t *sl, int port) {
610 int sock = socket(AF_INET, SOCK_STREAM, 0);
616 unsigned int val = 1;
617 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
619 struct sockaddr_in serv_addr = {0};
620 serv_addr.sin_family = AF_INET;
621 serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
622 serv_addr.sin_port = htons(port);
624 if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
629 if(listen(sock, 5) < 0) {
634 stlink_force_debug(sl);
636 init_code_breakpoints(sl);
637 init_data_watchpoints(sl);
639 printf("Listening at *:%d...\n", port);
641 (void) signal (SIGINT, ctrl_c);
642 int client = accept(sock, NULL, NULL);
643 signal (SIGINT, SIG_DFL);
651 printf("GDB connected.\n");
654 * To allow resetting the chip from GDB it is required to
655 * emulate attaching and detaching to target.
657 unsigned int attached = 1;
662 int status = gdb_recv_packet(client, &packet);
664 fprintf(stderr, "cannot recv: %d\n", status);
669 printf("recv: %s\n", packet);
677 if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
682 char *separator = strstr(packet, ":"), *params = "";
683 if(separator == NULL) {
684 separator = packet + strlen(packet);
686 params = separator + 1;
689 unsigned queryNameLength = (separator - &packet[1]);
690 char* queryName = calloc(queryNameLength + 1, 1);
691 strncpy(queryName, &packet[1], queryNameLength);
694 printf("query: %s;%s\n", queryName, params);
697 if(!strcmp(queryName, "Supported")) {
698 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
699 } else if(!strcmp(queryName, "Xfer")) {
700 char *type, *op, *s_addr, *s_length;
702 char *annex __attribute__((unused));
704 type = strsep(&tok, ":");
705 op = strsep(&tok, ":");
706 annex = strsep(&tok, ":");
707 s_addr = strsep(&tok, ",");
710 unsigned addr = strtoul(s_addr, NULL, 16),
711 length = strtoul(s_length, NULL, 16);
714 printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
715 type, op, annex, addr, length);
718 const char* data = NULL;
720 if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
721 data = current_memory_map;
724 unsigned data_length = strlen(data);
725 if(addr + length > data_length)
726 length = data_length - addr;
731 reply = calloc(length + 2, 1);
733 strncpy(&reply[1], data, length);
748 char *cmdName = strtok_r(packet, ":;", ¶ms);
750 cmdName++; // vCommand -> Command
752 if(!strcmp(cmdName, "FlashErase")) {
753 char *s_addr, *s_length;
756 s_addr = strsep(&tok, ",");
759 unsigned addr = strtoul(s_addr, NULL, 16),
760 length = strtoul(s_length, NULL, 16);
763 printf("FlashErase: addr:%08x,len:%04x\n",
767 if(flash_add_block(addr, length, sl) < 0) {
768 reply = strdup("E00");
770 reply = strdup("OK");
772 } else if(!strcmp(cmdName, "FlashWrite")) {
776 s_addr = strsep(&tok, ":");
779 unsigned addr = strtoul(s_addr, NULL, 16);
780 unsigned data_length = status - (data - packet);
782 // Length of decoded data cannot be more than
783 // encoded, as escapes are removed.
784 // Additional byte is reserved for alignment fix.
785 uint8_t *decoded = calloc(data_length + 1, 1);
786 unsigned dec_index = 0;
787 for(int i = 0; i < data_length; i++) {
788 if(data[i] == 0x7d) {
790 decoded[dec_index++] = data[i] ^ 0x20;
792 decoded[dec_index++] = data[i];
797 if(dec_index % 2 != 0)
801 printf("binary packet %d -> %d\n", data_length, dec_index);
804 if(flash_populate(addr, decoded, dec_index) < 0) {
805 reply = strdup("E00");
807 reply = strdup("OK");
809 } else if(!strcmp(cmdName, "FlashDone")) {
810 if(flash_go(sl) < 0) {
811 reply = strdup("E00");
813 reply = strdup("OK");
815 } else if(!strcmp(cmdName, "Kill")) {
818 reply = strdup("OK");
831 int status = gdb_check_for_interrupt(client);
833 fprintf(stderr, "cannot check for int: %d\n", status);
838 stlink_force_debug(sl);
843 if(sl->core_stat == STLINK_CORE_HALTED) {
850 reply = strdup("S05"); // TRAP
856 reply = strdup("S05"); // TRAP
861 reply = strdup("S05"); // TRAP
863 /* Stub shall reply OK if not attached. */
864 reply = strdup("OK");
869 stlink_read_all_regs(sl, ®p);
871 reply = calloc(8 * 16 + 1, 1);
872 for(int i = 0; i < 16; i++)
873 sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
878 unsigned id = strtoul(&packet[1], NULL, 16);
879 unsigned myreg = 0xDEADDEAD;
882 stlink_read_reg(sl, id, ®p);
883 myreg = htonl(regp.r[id]);
884 } else if(id == 0x19) {
885 stlink_read_reg(sl, 16, ®p);
886 myreg = htonl(regp.xpsr);
888 reply = strdup("E00");
891 reply = calloc(8 + 1, 1);
892 sprintf(reply, "%08x", myreg);
898 char* s_reg = &packet[1];
899 char* s_value = strstr(&packet[1], "=") + 1;
901 unsigned reg = strtoul(s_reg, NULL, 16);
902 unsigned value = strtoul(s_value, NULL, 16);
905 stlink_write_reg(sl, ntohl(value), reg);
906 } else if(reg == 0x19) {
907 stlink_write_reg(sl, ntohl(value), 16);
909 reply = strdup("E00");
913 reply = strdup("OK");
920 for(int i = 0; i < 16; i++) {
922 strncpy(str, &packet[1 + i * 8], 8);
923 uint32_t reg = strtoul(str, NULL, 16);
924 stlink_write_reg(sl, ntohl(reg), i);
927 reply = strdup("OK");
931 char* s_start = &packet[1];
932 char* s_count = strstr(&packet[1], ",") + 1;
934 stm32_addr_t start = strtoul(s_start, NULL, 16);
935 unsigned count = strtoul(s_count, NULL, 16);
937 unsigned adj_start = start % 4;
939 stlink_read_mem32(sl, start - adj_start, (count % 4 == 0) ?
940 count : count + 4 - (count % 4));
942 reply = calloc(count * 2 + 1, 1);
943 for(int i = 0; i < count; i++) {
944 reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
945 reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
952 char* s_start = &packet[1];
953 char* s_count = strstr(&packet[1], ",") + 1;
954 char* hexdata = strstr(packet, ":") + 1;
956 stm32_addr_t start = strtoul(s_start, NULL, 16);
957 unsigned count = strtoul(s_count, NULL, 16);
959 for(int i = 0; i < count; i ++) {
960 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
961 uint8_t byte = strtoul(hex, NULL, 16);
965 if((count % 4) == 0 && (start % 4) == 0) {
966 stlink_write_mem32(sl, start, count);
968 stlink_write_mem8(sl, start, count);
971 reply = strdup("OK");
978 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
979 stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
983 if(update_code_breakpoint(sl, addr, 1) < 0) {
984 reply = strdup("E00");
986 reply = strdup("OK");
990 case '2': // insert write watchpoint
991 case '3': // insert read watchpoint
992 case '4': // insert access watchpoint
995 if(packet[1] == '2') {
997 } else if(packet[1] == '3') {
1001 if(add_data_watchpoint(sl, wf, addr, len) < 0) {
1002 reply = strdup("E00");
1004 reply = strdup("OK");
1017 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1018 //stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1020 switch (packet[1]) {
1021 case '1': // remove breakpoint
1022 update_code_breakpoint(sl, addr, 0);
1023 reply = strdup("OK");
1026 case '2' : // remove write watchpoint
1027 case '3' : // remove read watchpoint
1028 case '4' : // remove access watchpoint
1029 if(delete_data_watchpoint(sl, addr) < 0) {
1030 reply = strdup("E00");
1032 reply = strdup("OK");
1044 * Enter extended mode which allows restarting.
1045 * We do support that always.
1048 reply = strdup("OK");
1054 /* Reset the core. */
1057 init_code_breakpoints(sl);
1058 init_data_watchpoints(sl);
1062 reply = strdup("OK");
1073 printf("send: %s\n", reply);
1076 int result = gdb_send_packet(client, reply);
1078 fprintf(stderr, "cannot send: %d\n", result);