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);
70 int parse_options(int argc, char** argv, st_state_t *st) {
71 static struct option long_options[] = {
72 {"help", no_argument, NULL, 'h'},
73 {"verbose", optional_argument, NULL, 'v'},
74 {"device", required_argument, NULL, 'd'},
75 {"stlink_version", required_argument, NULL, 's'},
76 {"stlinkv1", no_argument, NULL, '1'},
77 {"listen_port", required_argument, NULL, 'p'},
78 {"multi", optional_argument, NULL, 'm'},
81 const char * help_str = "%s - usage:\n\n"
82 " -h, --help\t\tPrint this help\n"
83 " -vXX, --verbose=XX\tspecify a specific verbosity level (0..99)\n"
84 " -v, --verbose\tspecify generally verbose logging\n"
85 " -d <device>, --device=/dev/stlink2_1\n"
86 "\t\t\tWhere is your stlink device connected?\n"
87 " -s X, --stlink_version=X\n"
88 "\t\t\tChoose what version of stlink to use, (defaults to 2)\n"
89 " -1, --stlinkv1\tForce stlink version 1\n"
90 " -p 4242, --listen_port=1234\n"
91 "\t\t\tSet the gdb server listen port. "
92 "(default port: " STRINGIFY(DEFAULT_GDB_LISTEN_PORT) ")\n"
94 "\t\t\tSet gdb server to extended mode.\n"
95 "\t\t\tst-util will continue listening for connections after disconnect.\n"
102 while ((c = getopt_long(argc, argv, "hv::d:s:1p:m", long_options, &option_index)) != -1) {
105 printf("XXXXX Shouldn't really normally come here, only if there's no corresponding option\n");
106 printf("option %s", long_options[option_index].name);
108 printf(" with arg %s", optarg);
113 printf(help_str, argv[0]);
118 st->logging_level = atoi(optarg);
120 st->logging_level = DEFAULT_LOGGING_LEVEL;
124 if (strlen(optarg) > sizeof (st->devicename)) {
125 fprintf(stderr, "device name too long: %zd\n", strlen(optarg));
127 strcpy(st->devicename, optarg);
131 st->stlink_version = 1;
134 sscanf(optarg, "%i", &q);
135 if (q < 0 || q > 2) {
136 fprintf(stderr, "stlink version %d unknown!\n", q);
139 st->stlink_version = q;
142 sscanf(optarg, "%i", &q);
144 fprintf(stderr, "Can't use a negative port to listen on: %d\n", q);
156 printf("non-option ARGV-elements: ");
157 while (optind < argc)
158 printf("%s ", argv[optind++]);
165 int main(int argc, char** argv) {
170 memset(&state, 0, sizeof(state));
172 state.stlink_version = 2;
173 state.logging_level = DEFAULT_LOGGING_LEVEL;
174 state.listen_port = DEFAULT_GDB_LISTEN_PORT;
175 parse_options(argc, argv, &state);
176 switch (state.stlink_version) {
178 sl = stlink_open_usb(state.logging_level);
179 if(sl == NULL) return 1;
182 sl = stlink_v1_open(state.logging_level);
183 if(sl == NULL) return 1;
187 connected_stlink = sl;
188 signal(SIGINT, &cleanup);
190 printf("Chip ID is %08x, Core ID is %08x.\n", sl->chip_id, sl->core_id);
194 current_memory_map = make_memory_map(sl);
198 if (WSAStartup(MAKEWORD(2,2),&wsadata) !=0 ) {
205 } while (state.persistent);
212 /* Switch back to mass storage mode before closing. */
214 stlink_exit_debug_mode(sl);
220 static const char* const target_description_F4 =
221 "<?xml version=\"1.0\"?>"
222 "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"
223 "<target version=\"1.0\">"
224 " <architecture>arm</architecture>"
225 " <feature name=\"org.gnu.gdb.arm.m-profile\">"
226 " <reg name=\"r0\" bitsize=\"32\"/>"
227 " <reg name=\"r1\" bitsize=\"32\"/>"
228 " <reg name=\"r2\" bitsize=\"32\"/>"
229 " <reg name=\"r3\" bitsize=\"32\"/>"
230 " <reg name=\"r4\" bitsize=\"32\"/>"
231 " <reg name=\"r5\" bitsize=\"32\"/>"
232 " <reg name=\"r6\" bitsize=\"32\"/>"
233 " <reg name=\"r7\" bitsize=\"32\"/>"
234 " <reg name=\"r8\" bitsize=\"32\"/>"
235 " <reg name=\"r9\" bitsize=\"32\"/>"
236 " <reg name=\"r10\" bitsize=\"32\"/>"
237 " <reg name=\"r11\" bitsize=\"32\"/>"
238 " <reg name=\"r12\" bitsize=\"32\"/>"
239 " <reg name=\"sp\" bitsize=\"32\" type=\"data_ptr\"/>"
240 " <reg name=\"lr\" bitsize=\"32\"/>"
241 " <reg name=\"pc\" bitsize=\"32\" type=\"code_ptr\"/>"
242 " <reg name=\"xpsr\" bitsize=\"32\" regnum=\"25\"/>"
243 " <reg name=\"msp\" bitsize=\"32\" regnum=\"26\" type=\"data_ptr\" group=\"general\" />"
244 " <reg name=\"psp\" bitsize=\"32\" regnum=\"27\" type=\"data_ptr\" group=\"general\" />"
245 " <reg name=\"control\" bitsize=\"8\" regnum=\"28\" type=\"int\" group=\"general\" />"
246 " <reg name=\"faultmask\" bitsize=\"8\" regnum=\"29\" type=\"int\" group=\"general\" />"
247 " <reg name=\"basepri\" bitsize=\"8\" regnum=\"30\" type=\"int\" group=\"general\" />"
248 " <reg name=\"primask\" bitsize=\"8\" regnum=\"31\" type=\"int\" group=\"general\" />"
249 " <reg name=\"s0\" bitsize=\"32\" regnum=\"32\" type=\"float\" group=\"float\" />"
250 " <reg name=\"s1\" bitsize=\"32\" type=\"float\" group=\"float\" />"
251 " <reg name=\"s2\" bitsize=\"32\" type=\"float\" group=\"float\" />"
252 " <reg name=\"s3\" bitsize=\"32\" type=\"float\" group=\"float\" />"
253 " <reg name=\"s4\" bitsize=\"32\" type=\"float\" group=\"float\" />"
254 " <reg name=\"s5\" bitsize=\"32\" type=\"float\" group=\"float\" />"
255 " <reg name=\"s6\" bitsize=\"32\" type=\"float\" group=\"float\" />"
256 " <reg name=\"s7\" bitsize=\"32\" type=\"float\" group=\"float\" />"
257 " <reg name=\"s8\" bitsize=\"32\" type=\"float\" group=\"float\" />"
258 " <reg name=\"s9\" bitsize=\"32\" type=\"float\" group=\"float\" />"
259 " <reg name=\"s10\" bitsize=\"32\" type=\"float\" group=\"float\" />"
260 " <reg name=\"s11\" bitsize=\"32\" type=\"float\" group=\"float\" />"
261 " <reg name=\"s12\" bitsize=\"32\" type=\"float\" group=\"float\" />"
262 " <reg name=\"s13\" bitsize=\"32\" type=\"float\" group=\"float\" />"
263 " <reg name=\"s14\" bitsize=\"32\" type=\"float\" group=\"float\" />"
264 " <reg name=\"s15\" bitsize=\"32\" type=\"float\" group=\"float\" />"
265 " <reg name=\"s16\" bitsize=\"32\" type=\"float\" group=\"float\" />"
266 " <reg name=\"s17\" bitsize=\"32\" type=\"float\" group=\"float\" />"
267 " <reg name=\"s18\" bitsize=\"32\" type=\"float\" group=\"float\" />"
268 " <reg name=\"s19\" bitsize=\"32\" type=\"float\" group=\"float\" />"
269 " <reg name=\"s20\" bitsize=\"32\" type=\"float\" group=\"float\" />"
270 " <reg name=\"s21\" bitsize=\"32\" type=\"float\" group=\"float\" />"
271 " <reg name=\"s22\" bitsize=\"32\" type=\"float\" group=\"float\" />"
272 " <reg name=\"s23\" bitsize=\"32\" type=\"float\" group=\"float\" />"
273 " <reg name=\"s24\" bitsize=\"32\" type=\"float\" group=\"float\" />"
274 " <reg name=\"s25\" bitsize=\"32\" type=\"float\" group=\"float\" />"
275 " <reg name=\"s26\" bitsize=\"32\" type=\"float\" group=\"float\" />"
276 " <reg name=\"s27\" bitsize=\"32\" type=\"float\" group=\"float\" />"
277 " <reg name=\"s28\" bitsize=\"32\" type=\"float\" group=\"float\" />"
278 " <reg name=\"s29\" bitsize=\"32\" type=\"float\" group=\"float\" />"
279 " <reg name=\"s30\" bitsize=\"32\" type=\"float\" group=\"float\" />"
280 " <reg name=\"s31\" bitsize=\"32\" type=\"float\" group=\"float\" />"
281 " <reg name=\"fpscr\" bitsize=\"32\" type=\"int\" group=\"float\" />"
285 static const char* const memory_map_template_F4 =
286 "<?xml version=\"1.0\"?>"
287 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
288 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
290 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x100000\"/>" // code = sram, bootrom or flash; flash is bigger
291 " <memory type=\"ram\" start=\"0x10000000\" length=\"0x10000\"/>" // ccm ram
292 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x20000\"/>" // sram
293 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x10000\">" //Sectors 0..3
294 " <property name=\"blocksize\">0x4000</property>" //16kB
296 " <memory type=\"flash\" start=\"0x08010000\" length=\"0x10000\">" //Sector 4
297 " <property name=\"blocksize\">0x10000</property>" //64kB
299 " <memory type=\"flash\" start=\"0x08020000\" length=\"0x70000\">" //Sectors 5..11
300 " <property name=\"blocksize\">0x20000</property>" //128kB
302 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
303 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
304 " <memory type=\"rom\" start=\"0x1fff0000\" length=\"0x7800\"/>" // bootrom
305 " <memory type=\"rom\" start=\"0x1fffc000\" length=\"0x10\"/>" // option byte area
308 static const char* const memory_map_template =
309 "<?xml version=\"1.0\"?>"
310 "<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
311 " \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
313 " <memory type=\"rom\" start=\"0x00000000\" length=\"0x%zx\"/>" // code = sram, bootrom or flash; flash is bigger
314 " <memory type=\"ram\" start=\"0x20000000\" length=\"0x%zx\"/>" // sram 8k
315 " <memory type=\"flash\" start=\"0x08000000\" length=\"0x%zx\">"
316 " <property name=\"blocksize\">0x%zx</property>"
318 " <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
319 " <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
320 " <memory type=\"rom\" start=\"0x%08x\" length=\"0x%zx\"/>" // bootrom
321 " <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x10\"/>" // option byte area
324 char* make_memory_map(stlink_t *sl) {
325 /* This will be freed in serve() */
326 char* map = malloc(4096);
329 if(sl->chip_id==STM32_CHIPID_F4) {
330 strcpy(map, memory_map_template_F4);
332 snprintf(map, 4096, memory_map_template,
335 sl->flash_size, sl->flash_pgsz,
336 sl->sys_base, sl->sys_size);
343 * DWT_COMP0 0xE0001020
344 * DWT_MASK0 0xE0001024
345 * DWT_FUNCTION0 0xE0001028
346 * DWT_COMP1 0xE0001030
347 * DWT_MASK1 0xE0001034
348 * DWT_FUNCTION1 0xE0001038
349 * DWT_COMP2 0xE0001040
350 * DWT_MASK2 0xE0001044
351 * DWT_FUNCTION2 0xE0001048
352 * DWT_COMP3 0xE0001050
353 * DWT_MASK3 0xE0001054
354 * DWT_FUNCTION3 0xE0001058
357 #define DATA_WATCH_NUM 4
359 enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
361 struct code_hw_watchpoint {
367 struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
369 static void init_data_watchpoints(stlink_t *sl) {
371 printf("init watchpoints\n");
374 // set trcena in debug command to turn on dwt unit
375 stlink_write_debug32(sl, 0xE000EDFC,
376 stlink_read_debug32(sl, 0xE000EDFC) | (1<<24));
378 // make sure all watchpoints are cleared
379 for(int i = 0; i < DATA_WATCH_NUM; i++) {
380 data_watches[i].fun = WATCHDISABLED;
381 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
385 static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
391 // find a free watchpoint
401 if((mask != (uint32_t)-1) && (mask < 16)) {
402 for(i = 0; i < DATA_WATCH_NUM; i++) {
403 // is this an empty slot ?
404 if(data_watches[i].fun == WATCHDISABLED) {
406 printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
409 data_watches[i].fun = wf;
410 data_watches[i].addr = addr;
411 data_watches[i].mask = mask;
413 // insert comparator address
414 stlink_write_debug32(sl, 0xE0001020 + i * 16, addr);
417 stlink_write_debug32(sl, 0xE0001024 + i * 16, mask);
420 stlink_write_debug32(sl, 0xE0001028 + i * 16, wf);
422 // just to make sure the matched bit is clear !
423 stlink_read_debug32(sl, 0xE0001028 + i * 16);
430 printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
435 static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
439 for(i = 0 ; i < DATA_WATCH_NUM; i++) {
440 if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
442 printf("delete watchpoint %d addr %x\n", i, addr);
445 data_watches[i].fun = WATCHDISABLED;
446 stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
453 printf("failure: delete watchpoint addr %x\n", addr);
459 #define CODE_BREAK_NUM 6
460 #define CODE_BREAK_LOW 0x01
461 #define CODE_BREAK_HIGH 0x02
463 struct code_hw_breakpoint {
468 struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
470 static void init_code_breakpoints(stlink_t *sl) {
471 memset(sl->q_buf, 0, 4);
472 stlink_write_debug32(sl, CM3_REG_FP_CTRL, 0x03 /*KEY | ENABLE4*/);
473 printf("KARL - should read back as 0x03, not 60 02 00 00\n");
474 stlink_read_debug32(sl, CM3_REG_FP_CTRL);
476 for(int i = 0; i < CODE_BREAK_NUM; i++) {
477 code_breaks[i].type = 0;
478 stlink_write_debug32(sl, CM3_REG_FP_COMP0 + i * 4, 0);
482 static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
483 stm32_addr_t fpb_addr = addr & ~0x3;
484 int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
487 fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
492 for(int i = 0; i < CODE_BREAK_NUM; i++) {
493 if(fpb_addr == code_breaks[i].addr ||
494 (set && code_breaks[i].type == 0)) {
501 if(set) return -1; // Free slot not found
502 else return 0; // Breakpoint is already removed
505 struct code_hw_breakpoint* brk = &code_breaks[id];
507 brk->addr = fpb_addr;
509 if(set) brk->type |= type;
510 else brk->type &= ~type;
514 printf("clearing hw break %d\n", id);
517 stlink_write_debug32(sl, 0xe0002008 + id * 4, 0);
519 uint32_t mask = (brk->addr) | 1 | (brk->type << 30);
522 printf("setting hw break %d at %08x (%d)\n",
523 id, brk->addr, brk->type);
524 printf("reg %08x \n",
528 stlink_write_debug32(sl, 0xe0002008 + id * 4, mask);
540 struct flash_block* next;
543 static struct flash_block* flash_root;
545 static int flash_add_block(stm32_addr_t addr, unsigned length, stlink_t *sl) {
547 if(addr < FLASH_BASE || addr + length > FLASH_BASE + sl->flash_size) {
548 fprintf(stderr, "flash_add_block: incorrect bounds\n");
552 stlink_calculate_pagesize(sl, addr);
553 if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
554 fprintf(stderr, "flash_add_block: unaligned block\n");
558 struct flash_block* new = malloc(sizeof(struct flash_block));
559 new->next = flash_root;
562 new->length = length;
563 new->data = calloc(length, 1);
570 static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
571 unsigned int fit_blocks = 0, fit_length = 0;
573 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
574 /* Block: ------X------Y--------
578 * Block intersects with data, if:
582 unsigned X = fb->addr, Y = fb->addr + fb->length;
583 unsigned a = addr, b = addr + length;
585 // from start of the block
586 unsigned start = (a > X ? a : X) - X;
587 unsigned end = (b > Y ? Y : b) - X;
589 memcpy(fb->data + start, data, end - start);
592 fit_length += end - start;
596 if(fit_blocks == 0) {
597 fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
601 if(fit_length != length) {
602 fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
603 addr, length, fit_length);
604 fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
610 static int flash_go(stlink_t *sl) {
613 // Some kinds of clock settings do not allow writing to flash.
616 for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
618 printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
621 unsigned length = fb->length;
622 for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
625 stlink_calculate_pagesize(sl, page);
628 printf("flash_do: page %08x\n", page);
631 if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
632 length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
642 for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
653 int serve(stlink_t *sl, st_state_t *st) {
654 int sock = socket(AF_INET, SOCK_STREAM, 0);
660 unsigned int val = 1;
661 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
663 struct sockaddr_in serv_addr;
664 memset(&serv_addr,0,sizeof(struct sockaddr_in));
665 serv_addr.sin_family = AF_INET;
666 serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
667 serv_addr.sin_port = htons(st->listen_port);
669 if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
674 if(listen(sock, 5) < 0) {
679 stlink_force_debug(sl);
681 init_code_breakpoints(sl);
682 init_data_watchpoints(sl);
684 printf("Listening at *:%d...\n", st->listen_port);
686 int client = accept(sock, NULL, NULL);
687 //signal (SIGINT, SIG_DFL);
695 printf("GDB connected.\n");
698 * To allow resetting the chip from GDB it is required to
699 * emulate attaching and detaching to target.
701 unsigned int attached = 1;
706 int status = gdb_recv_packet(client, &packet);
708 fprintf(stderr, "cannot recv: %d\n", status);
713 printf("recv: %s\n", packet);
721 if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
726 char *separator = strstr(packet, ":"), *params = "";
727 if(separator == NULL) {
728 separator = packet + strlen(packet);
730 params = separator + 1;
733 unsigned queryNameLength = (separator - &packet[1]);
734 char* queryName = calloc(queryNameLength + 1, 1);
735 strncpy(queryName, &packet[1], queryNameLength);
738 printf("query: %s;%s\n", queryName, params);
741 if(!strcmp(queryName, "Supported")) {
742 if(sl->chip_id==STM32_CHIPID_F4) {
743 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+;qXfer:features:read+");
746 reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
748 } else if(!strcmp(queryName, "Xfer")) {
749 char *type, *op, *__s_addr, *s_length;
751 char *annex __attribute__((unused));
753 type = strsep(&tok, ":");
754 op = strsep(&tok, ":");
755 annex = strsep(&tok, ":");
756 __s_addr = strsep(&tok, ",");
759 unsigned addr = strtoul(__s_addr, NULL, 16),
760 length = strtoul(s_length, NULL, 16);
763 printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
764 type, op, annex, addr, length);
767 const char* data = NULL;
769 if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
770 data = current_memory_map;
772 if(!strcmp(type, "features") && !strcmp(op, "read"))
773 data = target_description_F4;
776 unsigned data_length = strlen(data);
777 if(addr + length > data_length)
778 length = data_length - addr;
783 reply = calloc(length + 2, 1);
785 strncpy(&reply[1], data, length);
788 } else if(!strncmp(queryName, "Rcmd,",4)) {
789 // Rcmd uses the wrong separator
790 char *separator = strstr(packet, ","), *params = "";
791 if(separator == NULL) {
792 separator = packet + strlen(packet);
794 params = separator + 1;
798 if (!strncmp(params,"726573756d65",12)) {// resume
800 printf("Rcmd: resume\n");
804 reply = strdup("OK");
805 } else if (!strncmp(params,"68616c74",8)) { //halt
806 reply = strdup("OK");
808 stlink_force_debug(sl);
811 printf("Rcmd: halt\n");
813 } else if (!strncmp(params,"6a7461675f7265736574",20)) { //jtag_reset
814 reply = strdup("OK");
816 stlink_jtag_reset(sl, 1);
817 stlink_jtag_reset(sl, 0);
818 stlink_force_debug(sl);
821 printf("Rcmd: jtag_reset\n");
823 } else if (!strncmp(params,"7265736574",10)) { //reset
824 reply = strdup("OK");
826 stlink_force_debug(sl);
828 init_code_breakpoints(sl);
829 init_data_watchpoints(sl);
832 printf("Rcmd: reset\n");
836 printf("Rcmd: %s\n", params);
853 char *cmdName = strtok_r(packet, ":;", ¶ms);
855 cmdName++; // vCommand -> Command
857 if(!strcmp(cmdName, "FlashErase")) {
858 char *__s_addr, *s_length;
861 __s_addr = strsep(&tok, ",");
864 unsigned addr = strtoul(__s_addr, NULL, 16),
865 length = strtoul(s_length, NULL, 16);
868 printf("FlashErase: addr:%08x,len:%04x\n",
872 if(flash_add_block(addr, length, sl) < 0) {
873 reply = strdup("E00");
875 reply = strdup("OK");
877 } else if(!strcmp(cmdName, "FlashWrite")) {
878 char *__s_addr, *data;
881 __s_addr = strsep(&tok, ":");
884 unsigned addr = strtoul(__s_addr, NULL, 16);
885 unsigned data_length = status - (data - packet);
887 // Length of decoded data cannot be more than
888 // encoded, as escapes are removed.
889 // Additional byte is reserved for alignment fix.
890 uint8_t *decoded = calloc(data_length + 1, 1);
891 unsigned dec_index = 0;
892 for(unsigned int i = 0; i < data_length; i++) {
893 if(data[i] == 0x7d) {
895 decoded[dec_index++] = data[i] ^ 0x20;
897 decoded[dec_index++] = data[i];
902 if(dec_index % 2 != 0)
906 printf("binary packet %d -> %d\n", data_length, dec_index);
909 if(flash_populate(addr, decoded, dec_index) < 0) {
910 reply = strdup("E00");
912 reply = strdup("OK");
914 } else if(!strcmp(cmdName, "FlashDone")) {
915 if(flash_go(sl) < 0) {
916 reply = strdup("E00");
918 reply = strdup("OK");
920 } else if(!strcmp(cmdName, "Kill")) {
923 reply = strdup("OK");
936 int status = gdb_check_for_interrupt(client);
938 fprintf(stderr, "cannot check for int: %d\n", status);
943 stlink_force_debug(sl);
948 if(sl->core_stat == STLINK_CORE_HALTED) {
955 reply = strdup("S05"); // TRAP
961 reply = strdup("S05"); // TRAP
966 reply = strdup("S05"); // TRAP
968 /* Stub shall reply OK if not attached. */
969 reply = strdup("OK");
974 stlink_read_all_regs(sl, ®p);
976 reply = calloc(8 * 16 + 1, 1);
977 for(int i = 0; i < 16; i++)
978 sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
983 unsigned id = strtoul(&packet[1], NULL, 16);
984 unsigned myreg = 0xDEADDEAD;
987 stlink_read_reg(sl, id, ®p);
988 myreg = htonl(regp.r[id]);
989 } else if(id == 0x19) {
990 stlink_read_reg(sl, 16, ®p);
991 myreg = htonl(regp.xpsr);
992 } else if(id == 0x1A) {
993 stlink_read_reg(sl, 17, ®p);
994 myreg = htonl(regp.main_sp);
995 } else if(id == 0x1B) {
996 stlink_read_reg(sl, 18, ®p);
997 myreg = htonl(regp.process_sp);
998 } else if(id == 0x1C) {
999 stlink_read_unsupported_reg(sl, id, ®p);
1000 myreg = htonl(regp.control);
1001 } else if(id == 0x1D) {
1002 stlink_read_unsupported_reg(sl, id, ®p);
1003 myreg = htonl(regp.faultmask);
1004 } else if(id == 0x1E) {
1005 stlink_read_unsupported_reg(sl, id, ®p);
1006 myreg = htonl(regp.basepri);
1007 } else if(id == 0x1F) {
1008 stlink_read_unsupported_reg(sl, id, ®p);
1009 myreg = htonl(regp.primask);
1010 } else if(id >= 0x20 && id < 0x40) {
1011 stlink_read_unsupported_reg(sl, id, ®p);
1012 myreg = htonl(regp.s[id-0x20]);
1013 } else if(id == 0x40) {
1014 stlink_read_unsupported_reg(sl, id, ®p);
1015 myreg = htonl(regp.fpscr);
1017 reply = strdup("E00");
1020 reply = calloc(8 + 1, 1);
1021 sprintf(reply, "%08x", myreg);
1027 char* s_reg = &packet[1];
1028 char* s_value = strstr(&packet[1], "=") + 1;
1030 unsigned reg = strtoul(s_reg, NULL, 16);
1031 unsigned value = strtoul(s_value, NULL, 16);
1034 stlink_write_reg(sl, ntohl(value), reg);
1035 } else if(reg == 0x19) {
1036 stlink_write_reg(sl, ntohl(value), 16);
1037 } else if(reg == 0x1A) {
1038 stlink_write_reg(sl, ntohl(value), 17);
1039 } else if(reg == 0x1B) {
1040 stlink_write_reg(sl, ntohl(value), 18);
1041 } else if(reg == 0x1C) {
1042 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1043 } else if(reg == 0x1D) {
1044 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1045 } else if(reg == 0x1E) {
1046 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1047 } else if(reg == 0x1F) {
1048 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1049 } else if(reg >= 0x20 && reg < 0x40) {
1050 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1051 } else if(reg == 0x40) {
1052 stlink_write_unsupported_reg(sl, ntohl(value), reg, ®p);
1054 reply = strdup("E00");
1058 reply = strdup("OK");
1065 for(int i = 0; i < 16; i++) {
1067 strncpy(str, &packet[1 + i * 8], 8);
1068 uint32_t reg = strtoul(str, NULL, 16);
1069 stlink_write_reg(sl, ntohl(reg), i);
1072 reply = strdup("OK");
1076 char* s_start = &packet[1];
1077 char* s_count = strstr(&packet[1], ",") + 1;
1079 stm32_addr_t start = strtoul(s_start, NULL, 16);
1080 unsigned count = strtoul(s_count, NULL, 16);
1082 unsigned adj_start = start % 4;
1083 unsigned count_rnd = (count + adj_start + 4 - 1) / 4 * 4;
1085 stlink_read_mem32(sl, start - adj_start, count_rnd);
1087 reply = calloc(count * 2 + 1, 1);
1088 for(unsigned int i = 0; i < count; i++) {
1089 reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
1090 reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
1097 char* s_start = &packet[1];
1098 char* s_count = strstr(&packet[1], ",") + 1;
1099 char* hexdata = strstr(packet, ":") + 1;
1101 stm32_addr_t start = strtoul(s_start, NULL, 16);
1102 unsigned count = strtoul(s_count, NULL, 16);
1105 unsigned align_count = 4 - start % 4;
1106 if (align_count > count) align_count = count;
1107 for(unsigned int i = 0; i < align_count; i ++) {
1108 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1109 uint8_t byte = strtoul(hex, NULL, 16);
1110 sl->q_buf[i] = byte;
1112 stlink_write_mem8(sl, start, align_count);
1113 start += align_count;
1114 count -= align_count;
1115 hexdata += 2*align_count;
1118 if(count - count % 4) {
1119 unsigned aligned_count = count - count % 4;
1121 for(unsigned int i = 0; i < aligned_count; i ++) {
1122 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1123 uint8_t byte = strtoul(hex, NULL, 16);
1124 sl->q_buf[i] = byte;
1126 stlink_write_mem32(sl, start, aligned_count);
1127 count -= aligned_count;
1128 start += aligned_count;
1129 hexdata += 2*aligned_count;
1133 for(unsigned int i = 0; i < count; i ++) {
1134 char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
1135 uint8_t byte = strtoul(hex, NULL, 16);
1136 sl->q_buf[i] = byte;
1138 stlink_write_mem8(sl, start, count);
1140 reply = strdup("OK");
1146 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1147 stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1149 switch (packet[1]) {
1151 if(update_code_breakpoint(sl, addr, 1) < 0) {
1152 reply = strdup("E00");
1154 reply = strdup("OK");
1158 case '2': // insert write watchpoint
1159 case '3': // insert read watchpoint
1160 case '4': // insert access watchpoint
1163 if(packet[1] == '2') {
1165 } else if(packet[1] == '3') {
1171 if(add_data_watchpoint(sl, wf, addr, len) < 0) {
1172 reply = strdup("E00");
1174 reply = strdup("OK");
1186 stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
1187 //stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
1189 switch (packet[1]) {
1190 case '1': // remove breakpoint
1191 update_code_breakpoint(sl, addr, 0);
1192 reply = strdup("OK");
1195 case '2' : // remove write watchpoint
1196 case '3' : // remove read watchpoint
1197 case '4' : // remove access watchpoint
1198 if(delete_data_watchpoint(sl, addr) < 0) {
1199 reply = strdup("E00");
1201 reply = strdup("OK");
1213 * Enter extended mode which allows restarting.
1214 * We do support that always.
1218 * Also, set to persistent mode
1219 * to allow GDB disconnect.
1223 reply = strdup("OK");
1229 /* Reset the core. */
1232 init_code_breakpoints(sl);
1233 init_data_watchpoints(sl);
1237 reply = strdup("OK");
1248 printf("send: %s\n", reply);
1251 int result = gdb_send_packet(client, reply);
1253 fprintf(stderr, "cannot send: %d\n", result);