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>
15 #include <sys/socket.h>
16 #include <netinet/in.h>
17 #include <arpa/inet.h>
20 #include <stlink-common.h>
22 #include "gdb-remote.h"
24 #define DEFAULT_LOGGING_LEVEL 100
25 #define DEFAULT_GDB_LISTEN_PORT 4242
27 #define STRINGIFY_inner(name) #name
28 #define STRINGIFY(name) STRINGIFY_inner(name)
30 #define FLASH_BASE 0x08000000
31 #define FLASH_PAGE (sl->flash_pgsz)
32 #define FLASH_PAGE_MASK (~((1 << 10) - 1))
33 #define FLASH_SIZE (FLASH_PAGE * 128)
35 static const char hex[] = "0123456789abcdef";
37 static const char* current_memory_map = NULL;
40 * Chip IDs are explained in the appropriate programming manual for the
41 * DBGMCU_IDCODE register (0xE0042000)
44 #define CORE_M3_R1 0x1BA00477
45 #define CORE_M3_R2 0x4BA00477
46 #define CORE_M4_R0 0x2BA01477
51 uint32_t flash_size_reg;
52 uint32_t max_flash_size, flash_pagesize;
54 uint32_t bootrom_base, bootrom_size;
56 { 0x410, "F1 Medium-density device", 0x1ffff7e0,
57 0x20000, 0x400, 0x5000, 0x1ffff000, 0x800 }, // table 2, pm0063
58 { 0x411, "F2 device", 0, /* No flash size register found in the docs*/
59 0x100000, 0x20000, 0x20000, 0x1fff0000, 0x7800 }, // table 1, pm0059
60 { 0x412, "F1 Low-density device", 0x1ffff7e0,
61 0x8000, 0x400, 0x2800, 0x1ffff000, 0x800 }, // table 1, pm0063
62 { 0x413, "F4 device", 0x1FFF7A10,
63 0x100000, 0x20000, 0x30000, 0x1fff0000, 0x7800 }, // table 1, pm0081
64 { 0x414, "F1 High-density device", 0x1ffff7e0,
65 0x80000, 0x800, 0x10000, 0x1ffff000, 0x800 }, // table 3 pm0063
66 // This ignores the EEPROM! (and uses the page erase size,
67 // not the sector write protection...)
68 { 0x416, "L1 Med-density device", 0x1FF8004C, // table 1, pm0062
69 0x20000, 0x100, 0x4000, 0x1ff00000, 0x1000 },
70 { 0x418, "F1 Connectivity line device", 0x1ffff7e0,
71 0x40000, 0x800, 0x10000, 0x1fffb000, 0x4800 },
72 { 0x420, "F1 Medium-density value line device", 0x1ffff7e0,
73 0x20000, 0x400, 0x2000, 0x1ffff000, 0x800 },
74 { 0x428, "F1 High-density value line device", 0x1ffff7e0,
75 0x80000, 0x800, 0x8000, 0x1ffff000, 0x800 },
76 { 0x430, "F1 XL-density device", 0x1ffff7e0, // pm0068
77 0x100000, 0x800, 0x18000, 0x1fffe000, 0x1800 },
81 typedef struct _st_state_t {
82 // things from command line, bleh
84 // "/dev/serial/by-id/usb-FTDI_TTL232R-3V3_FTE531X6-if00-port0" is only 58 chars
91 int serve(stlink_t *sl, int port);
92 char* make_memory_map(const struct chip_params *params, uint32_t flash_size);
95 int parse_options(int argc, char** argv, st_state_t *st) {
96 static struct option long_options[] = {
97 {"help", no_argument, NULL, 'h'},
98 {"verbose", optional_argument, NULL, 'v'},
99 {"device", required_argument, NULL, 'd'},
100 {"stlink_version", required_argument, NULL, 's'},
101 {"stlinkv1", no_argument, NULL, '1'},
102 {"listen_port", required_argument, NULL, 'p'},
105 const char * help_str = "%s - usage:\n\n"
106 " -h, --help\t\tPrint this help\n"
107 " -vXX, --verbose=XX\tspecify a specific verbosity level (0..99)\n"
108 " -v, --verbose\tspecify generally verbose logging\n"
109 " -d <device>, --device=/dev/stlink2_1\n"
110 "\t\t\tWhere is your stlink device connected?\n"
111 " -s X, --stlink_version=X\n"
112 "\t\t\tChoose what version of stlink to use, (defaults to 2)\n"
113 " -1, --stlinkv1\tForce stlink version 1\n"
114 " -p 4242, --listen_port=1234\n"
115 "\t\t\tSet the gdb server listen port. "
116 "(default port: " STRINGIFY(DEFAULT_GDB_LISTEN_PORT) ")\n"
120 int option_index = 0;
123 while ((c = getopt_long(argc, argv, "hv::d:s:1p:", long_options, &option_index)) != -1) {
126 printf("XXXXX Shouldn't really normally come here, only if there's no corresponding option\n");
127 printf("option %s", long_options[option_index].name);
129 printf(" with arg %s", optarg);
134 printf(help_str, argv[0]);
139 st->logging_level = atoi(optarg);
141 st->logging_level = DEFAULT_LOGGING_LEVEL;
145 if (strlen(optarg) > sizeof (st->devicename)) {
146 fprintf(stderr, "device name too long: %zd\n", strlen(optarg));
148 strcpy(st->devicename, optarg);
152 st->stlink_version = 1;
155 sscanf(optarg, "%i", &q);
156 if (q < 0 || q > 2) {
157 fprintf(stderr, "stlink version %d unknown!\n", q);
160 st->stlink_version = q;
163 sscanf(optarg, "%i", &q);
165 fprintf(stderr, "Can't use a negative port to listen on: %d\n", q);
174 printf("non-option ARGV-elements: ");
175 while (optind < argc)
176 printf("%s ", argv[optind++]);
183 int main(int argc, char** argv) {
188 memset(&state, 0, sizeof(state));
190 state.stlink_version = 2;
191 state.logging_level = DEFAULT_LOGGING_LEVEL;
192 state.listen_port = DEFAULT_GDB_LISTEN_PORT;
193 parse_options(argc, argv, &state);
194 switch (state.stlink_version) {
196 sl = stlink_open_usb(state.logging_level);
197 if(sl == NULL) return 1;
200 sl = stlink_v1_open(NULL, state.logging_level);
201 if(sl == NULL) return 1;
205 if (stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE) {
206 if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) {
207 stlink_exit_dfu_mode(sl);
209 stlink_enter_swd_mode(sl);
212 uint32_t chip_id = stlink_chip_id(sl);
213 uint32_t core_id = stlink_core_id(sl);
215 /* Fix chip_id for F4 */
216 if (((chip_id & 0xFFF) == 0x411) && (core_id == CORE_M4_R0)) {
217 printf("Fixing wrong chip_id for STM32F4 Rev A errata\n");
221 printf("Chip ID is %08x, Core ID is %08x.\n", chip_id, core_id);
223 const struct chip_params* params = NULL;
225 for(int i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
226 if(devices[i].chip_id == (chip_id & 0xFFF)) {
227 params = &devices[i];
233 fprintf(stderr, "Cannot recognize the connected device!\n");
237 printf("Device connected: %s\n", params->description);
238 printf("Device parameters: SRAM: 0x%x bytes, Flash: up to 0x%x bytes in pages of 0x%x bytes\n",
239 params->sram_size, params->max_flash_size, params->flash_pagesize);
241 FLASH_PAGE = params->flash_pagesize;
245 stlink_read_mem32(sl, params->flash_size_reg, 4);
246 flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
248 printf("Flash size is %d KiB.\n", flash_size);
249 // memory map is in 1k blocks.
250 current_memory_map = make_memory_map(params, flash_size * 0x400);
252 while(serve(sl, state.listen_port) == 0);
254 /* Switch back to mass storage mode before closing. */
256 stlink_exit_debug_mode(sl);
262 static const char* const memory_map_template =
263 "<?xml version=\"1.0\"?>"
264 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
265 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
267 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%x\"/>" // code = sram, bootrom or flash; flash is bigger
268 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%x\"/>" // sram 8k
269 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%x\">"
270 " <property name=\"blocksize\">0x%x</property>"
272 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
273 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
274 " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%x\"/>" // bootrom
275 " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x8\"/>" // option byte area
278 char* make_memory_map(const struct chip_params *params, uint32_t flash_size) {
279 /* This will be freed in serve() */
280 char* map = malloc(4096);
283 snprintf(map, 4096, memory_map_template,
286 flash_size, params->flash_pagesize,
287 params->bootrom_base, params->bootrom_size);
294 * DWT_COMP0 0xE0001020
295 * DWT_MASK0 0xE0001024
296 * DWT_FUNCTION0 0xE0001028
297 * DWT_COMP1 0xE0001030
298 * DWT_MASK1 0xE0001034
299 * DWT_FUNCTION1 0xE0001038
300 * DWT_COMP2 0xE0001040
301 * DWT_MASK2 0xE0001044
302 * DWT_FUNCTION2 0xE0001048
303 * DWT_COMP3 0xE0001050
304 * DWT_MASK3 0xE0001054
305 * DWT_FUNCTION3 0xE0001058
308 #define DATA_WATCH_NUM 4
310 enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
312 struct code_hw_watchpoint {
318 struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
320 static void init_data_watchpoints(stlink_t *sl) {
322 printf("init watchpoints\n");
325 // set trcena in debug command to turn on dwt unit
326 stlink_read_mem32(sl, 0xE000EDFC, 4);
328 stlink_write_mem32(sl, 0xE000EDFC, 4);
330 // make sure all watchpoints are cleared
331 memset(sl->q_buf, 0, 4);
332 for(int i = 0; i < DATA_WATCH_NUM; i++) {
333 data_watches[i].fun = WATCHDISABLED;
334 stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
338 static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
344 // find a free watchpoint
354 if((mask != -1) && (mask < 16)) {
355 for(i = 0; i < DATA_WATCH_NUM; i++) {
356 // is this an empty slot ?
357 if(data_watches[i].fun == WATCHDISABLED) {
359 printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
362 data_watches[i].fun = wf;
363 data_watches[i].addr = addr;
364 data_watches[i].mask = mask;
366 // insert comparator address
367 sl->q_buf[0] = (addr & 0xff);
368 sl->q_buf[1] = ((addr >> 8) & 0xff);
369 sl->q_buf[2] = ((addr >> 16) & 0xff);
370 sl->q_buf[3] = ((addr >> 24) & 0xff);
372 stlink_write_mem32(sl, 0xE0001020 + i * 16, 4);
375 memset(sl->q_buf, 0, 4);
377 stlink_write_mem32(sl, 0xE0001024 + i * 16, 4);
380 memset(sl->q_buf, 0, 4);
382 stlink_write_mem32(sl, 0xE0001028 + i * 16, 4);
384 // just to make sure the matched bit is clear !
385 stlink_read_mem32(sl, 0xE0001028 + i * 16, 4);
392 printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
397 static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
401 for(i = 0 ; i < DATA_WATCH_NUM; i++) {
402 if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
404 printf("delete watchpoint %d addr %x\n", i, addr);
407 memset(sl->q_buf, 0, 4);
408 data_watches[i].fun = WATCHDISABLED;
409 stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
416 printf("failure: delete watchpoint addr %x\n", addr);
422 #define CODE_BREAK_NUM 6
423 #define CODE_BREAK_LOW 0x01
424 #define CODE_BREAK_HIGH 0x02
426 struct code_hw_breakpoint {
431 struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
433 static void init_code_breakpoints(stlink_t *sl) {
434 memset(sl->q_buf, 0, 4);
435 sl->q_buf[0] = 0x03; // KEY | ENABLE
436 stlink_write_mem32(sl, CM3_REG_FP_CTRL, 4);
437 printf("KARL - should read back as 0x03, not 60 02 00 00\n");
438 stlink_read_mem32(sl, CM3_REG_FP_CTRL, 4);
440 memset(sl->q_buf, 0, 4);
441 for(int i = 0; i < CODE_BREAK_NUM; i++) {
442 code_breaks[i].type = 0;
443 stlink_write_mem32(sl, CM3_REG_FP_COMP0 + i * 4, 4);
447 static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
448 stm32_addr_t fpb_addr = addr & ~0x3;
449 int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
452 fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
457 for(int i = 0; i < CODE_BREAK_NUM; i++) {
458 if(fpb_addr == code_breaks[i].addr ||
459 (set && code_breaks[i].type == 0)) {
466 if(set) return -1; // Free slot not found
467 else return 0; // Breakpoint is already removed
470 struct code_hw_breakpoint* brk = &code_breaks[id];
472 brk->addr = fpb_addr;
474 if(set) brk->type |= type;
475 else brk->type &= ~type;
477 memset(sl->q_buf, 0, 4);
481 printf("clearing hw break %d\n", id);
484 stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
486 sl->q_buf[0] = ( brk->addr & 0xff) | 1;
487 sl->q_buf[1] = ((brk->addr >> 8) & 0xff);
488 sl->q_buf[2] = ((brk->addr >> 16) & 0xff);
489 sl->q_buf[3] = ((brk->addr >> 24) & 0xff) | (brk->type << 6);
492 printf("setting hw break %d at %08x (%d)\n",
493 id, brk->addr, brk->type);
494 printf("reg %02x %02x %02x %02x\n",
495 sl->q_buf[3], sl->q_buf[2], sl->q_buf[1], sl->q_buf[0]);
498 stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
510 struct flash_block* next;
513 static struct flash_block* flash_root;
515 static int flash_add_block(stm32_addr_t addr, unsigned length,
517 if(addr < FLASH_BASE || addr + length > FLASH_BASE + FLASH_SIZE) {
518 fprintf(stderr, "flash_add_block: incorrect bounds\n");
522 if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
523 fprintf(stderr, "flash_add_block: unaligned block\n");
527 struct flash_block* new = malloc(sizeof(struct flash_block));
528 new->next = flash_root;
531 new->length = length;
532 new->data = calloc(length, 1);
539 static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
540 int fit_blocks = 0, fit_length = 0;
542 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
543 /* Block: ------X------Y--------
547 * Block intersects with data, if:
551 unsigned X = fb->addr, Y = fb->addr + fb->length;
552 unsigned a = addr, b = addr + length;
554 // from start of the block
555 unsigned start = (a > X ? a : X) - X;
556 unsigned end = (b > Y ? Y : b) - X;
558 memcpy(fb->data + start, data, end - start);
561 fit_length += end - start;
565 if(fit_blocks == 0) {
566 fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
570 if(fit_length != length) {
571 fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
572 addr, length, fit_length);
573 fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
579 static int flash_go(stlink_t *sl) {
582 // Some kinds of clock settings do not allow writing to flash.
585 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
587 printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
590 unsigned length = fb->length;
591 for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
593 printf("flash_do: page %08x\n", page);
596 stlink_erase_flash_page(sl, page);
598 if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
599 length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
610 for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
621 int serve(stlink_t *sl, int port) {
622 int sock = socket(AF_INET, SOCK_STREAM, 0);
628 unsigned int val = 1;
629 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
631 struct sockaddr_in serv_addr = {0};
632 serv_addr.sin_family = AF_INET;
633 serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
634 serv_addr.sin_port = htons(port);
636 if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
641 if(listen(sock, 5) < 0) {
646 stlink_force_debug(sl);
648 init_code_breakpoints(sl);
649 init_data_watchpoints(sl);
651 printf("Listening at *:%d...\n", port);
653 int client = accept(sock, NULL, NULL);
654 signal (SIGINT, SIG_DFL);
662 printf("GDB connected.\n");
665 * To allow resetting the chip from GDB it is required to
666 * emulate attaching and detaching to target.
668 unsigned int attached = 1;
673 int status = gdb_recv_packet(client, &packet);
675 fprintf(stderr, "cannot recv: %d\n", status);
680 printf("recv: %s\n", packet);
688 if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
693 char *separator = strstr(packet, ":"), *params = "";
694 if(separator == NULL) {
695 separator = packet + strlen(packet);
697 params = separator + 1;
700 unsigned queryNameLength = (separator - &packet[1]);
701 char* queryName = calloc(queryNameLength + 1, 1);
702 strncpy(queryName, &packet[1], queryNameLength);
705 printf("query: %s;%s\n", queryName, params);
708 if(!strcmp(queryName, "Supported")) {
709 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
710 } else if(!strcmp(queryName, "Xfer")) {
711 char *type, *op, *s_addr, *s_length;
713 char *annex __attribute__((unused));
715 type = strsep(&tok, ":");
716 op = strsep(&tok, ":");
717 annex = strsep(&tok, ":");
718 s_addr = strsep(&tok, ",");
721 unsigned addr = strtoul(s_addr, NULL, 16),
722 length = strtoul(s_length, NULL, 16);
725 printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
726 type, op, annex, addr, length);
729 const char* data = NULL;
731 if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
732 data = current_memory_map;
735 unsigned data_length = strlen(data);
736 if(addr + length > data_length)
737 length = data_length - addr;
742 reply = calloc(length + 2, 1);
744 strncpy(&reply[1], data, length);
759 char *cmdName = strtok_r(packet, ":;", ¶ms);
761 cmdName++; // vCommand -> Command
763 if(!strcmp(cmdName, "FlashErase")) {
764 char *s_addr, *s_length;
767 s_addr = strsep(&tok, ",");
770 unsigned addr = strtoul(s_addr, NULL, 16),
771 length = strtoul(s_length, NULL, 16);
774 printf("FlashErase: addr:%08x,len:%04x\n",
778 if(flash_add_block(addr, length, sl) < 0) {
779 reply = strdup("E00");
781 reply = strdup("OK");
783 } else if(!strcmp(cmdName, "FlashWrite")) {
787 s_addr = strsep(&tok, ":");
790 unsigned addr = strtoul(s_addr, NULL, 16);
791 unsigned data_length = status - (data - packet);
793 // Length of decoded data cannot be more than
794 // encoded, as escapes are removed.
795 // Additional byte is reserved for alignment fix.
796 uint8_t *decoded = calloc(data_length + 1, 1);
797 unsigned dec_index = 0;
798 for(int i = 0; i < data_length; i++) {
799 if(data[i] == 0x7d) {
801 decoded[dec_index++] = data[i] ^ 0x20;
803 decoded[dec_index++] = data[i];
808 if(dec_index % 2 != 0)
812 printf("binary packet %d -> %d\n", data_length, dec_index);
815 if(flash_populate(addr, decoded, dec_index) < 0) {
816 reply = strdup("E00");
818 reply = strdup("OK");
820 } else if(!strcmp(cmdName, "FlashDone")) {
821 if(flash_go(sl) < 0) {
822 reply = strdup("E00");
824 reply = strdup("OK");
826 } else if(!strcmp(cmdName, "Kill")) {
829 reply = strdup("OK");
842 int status = gdb_check_for_interrupt(client);
844 fprintf(stderr, "cannot check for int: %d\n", status);
849 stlink_force_debug(sl);
854 if(sl->core_stat == STLINK_CORE_HALTED) {
861 reply = strdup("S05"); // TRAP
867 reply = strdup("S05"); // TRAP
872 reply = strdup("S05"); // TRAP
874 /* Stub shall reply OK if not attached. */
875 reply = strdup("OK");
880 stlink_read_all_regs(sl, ®p);
882 reply = calloc(8 * 16 + 1, 1);
883 for(int i = 0; i < 16; i++)
884 sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
889 unsigned id = strtoul(&packet[1], NULL, 16);
890 unsigned myreg = 0xDEADDEAD;
893 stlink_read_reg(sl, id, ®p);
894 myreg = htonl(regp.r[id]);
895 } else if(id == 0x19) {
896 stlink_read_reg(sl, 16, ®p);
897 myreg = htonl(regp.xpsr);
899 reply = strdup("E00");
902 reply = calloc(8 + 1, 1);
903 sprintf(reply, "%08x", myreg);
909 char* s_reg = &packet[1];
910 char* s_value = strstr(&packet[1], "=") + 1;
912 unsigned reg = strtoul(s_reg, NULL, 16);
913 unsigned value = strtoul(s_value, NULL, 16);
916 stlink_write_reg(sl, ntohl(value), reg);
917 } else if(reg == 0x19) {
918 stlink_write_reg(sl, ntohl(value), 16);
920 reply = strdup("E00");
924 reply = strdup("OK");
931 for(int i = 0; i < 16; i++) {
933 strncpy(str, &packet[1 + i * 8], 8);
934 uint32_t reg = strtoul(str, NULL, 16);
935 stlink_write_reg(sl, ntohl(reg), i);
938 reply = strdup("OK");
942 char* s_start = &packet[1];
943 char* s_count = strstr(&packet[1], ",") + 1;
945 stm32_addr_t start = strtoul(s_start, NULL, 16);
946 unsigned count = strtoul(s_count, NULL, 16);
948 unsigned adj_start = start % 4;
950 stlink_read_mem32(sl, start - adj_start, (count % 4 == 0) ?
951 count : count + 4 - (count % 4));
953 reply = calloc(count * 2 + 1, 1);
954 for(int i = 0; i < count; i++) {
955 reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
956 reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
963 char* s_start = &packet[1];
964 char* s_count = strstr(&packet[1], ",") + 1;
965 char* hexdata = strstr(packet, ":") + 1;
967 stm32_addr_t start = strtoul(s_start, NULL, 16);
968 unsigned count = strtoul(s_count, NULL, 16);
970 for(int i = 0; i < count; i ++) {
971 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
972 uint8_t byte = strtoul(hex, NULL, 16);
976 if((count % 4) == 0 && (start % 4) == 0) {
977 stlink_write_mem32(sl, start, count);
979 stlink_write_mem8(sl, start, count);
982 reply = strdup("OK");
989 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
990 stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
994 if(update_code_breakpoint(sl, addr, 1) < 0) {
995 reply = strdup("E00");
997 reply = strdup("OK");
1001 case '2': // insert write watchpoint
1002 case '3': // insert read watchpoint
1003 case '4': // insert access watchpoint
1006 if(packet[1] == '2') {
1008 } else if(packet[1] == '3') {
1012 if(add_data_watchpoint(sl, wf, addr, len) < 0) {
1013 reply = strdup("E00");
1015 reply = strdup("OK");
1028 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1029 //stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1031 switch (packet[1]) {
1032 case '1': // remove breakpoint
1033 update_code_breakpoint(sl, addr, 0);
1034 reply = strdup("OK");
1037 case '2' : // remove write watchpoint
1038 case '3' : // remove read watchpoint
1039 case '4' : // remove access watchpoint
1040 if(delete_data_watchpoint(sl, addr) < 0) {
1041 reply = strdup("E00");
1043 reply = strdup("OK");
1055 * Enter extended mode which allows restarting.
1056 * We do support that always.
1059 reply = strdup("OK");
1065 /* Reset the core. */
1068 init_code_breakpoints(sl);
1069 init_data_watchpoints(sl);
1073 reply = strdup("OK");
1084 printf("send: %s\n", reply);
1087 int result = gdb_send_packet(client, reply);
1089 fprintf(stderr, "cannot send: %d\n", result);