kopia lustrzana https://github.com/stlink-org/stlink
1087 wiersze
25 KiB
C
1087 wiersze
25 KiB
C
/* -*- tab-width:8 -*- */
|
|
#define DEBUG 0
|
|
/*
|
|
Copyright (C) 2011 Peter Zotov <whitequark@whitequark.org>
|
|
Use of this source code is governed by a BSD-style
|
|
license that can be found in the LICENSE file.
|
|
*/
|
|
|
|
#include <getopt.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#ifdef __MINGW32__
|
|
#include "mingw.h"
|
|
#else
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <signal.h>
|
|
#endif
|
|
|
|
#include <stlink-common.h>
|
|
|
|
#include "gdb-remote.h"
|
|
|
|
#define DEFAULT_LOGGING_LEVEL 50
|
|
#define DEFAULT_GDB_LISTEN_PORT 4242
|
|
|
|
#define STRINGIFY_inner(name) #name
|
|
#define STRINGIFY(name) STRINGIFY_inner(name)
|
|
|
|
#define FLASH_BASE 0x08000000
|
|
|
|
//Allways update the FLASH_PAGE before each use, by calling stlink_calculate_pagesize
|
|
#define FLASH_PAGE (sl->flash_pgsz)
|
|
|
|
static const char hex[] = "0123456789abcdef";
|
|
|
|
static const char* current_memory_map = NULL;
|
|
|
|
typedef struct _st_state_t {
|
|
// things from command line, bleh
|
|
int stlink_version;
|
|
// "/dev/serial/by-id/usb-FTDI_TTL232R-3V3_FTE531X6-if00-port0" is only 58 chars
|
|
char devicename[100];
|
|
int logging_level;
|
|
int listen_port;
|
|
} st_state_t;
|
|
|
|
|
|
int serve(stlink_t *sl, int port);
|
|
char* make_memory_map(stlink_t *sl);
|
|
|
|
|
|
int parse_options(int argc, char** argv, st_state_t *st) {
|
|
static struct option long_options[] = {
|
|
{"help", no_argument, NULL, 'h'},
|
|
{"verbose", optional_argument, NULL, 'v'},
|
|
{"device", required_argument, NULL, 'd'},
|
|
{"stlink_version", required_argument, NULL, 's'},
|
|
{"stlinkv1", no_argument, NULL, '1'},
|
|
{"listen_port", required_argument, NULL, 'p'},
|
|
{0, 0, 0, 0},
|
|
};
|
|
const char * help_str = "%s - usage:\n\n"
|
|
" -h, --help\t\tPrint this help\n"
|
|
" -vXX, --verbose=XX\tspecify a specific verbosity level (0..99)\n"
|
|
" -v, --verbose\tspecify generally verbose logging\n"
|
|
" -d <device>, --device=/dev/stlink2_1\n"
|
|
"\t\t\tWhere is your stlink device connected?\n"
|
|
" -s X, --stlink_version=X\n"
|
|
"\t\t\tChoose what version of stlink to use, (defaults to 2)\n"
|
|
" -1, --stlinkv1\tForce stlink version 1\n"
|
|
" -p 4242, --listen_port=1234\n"
|
|
"\t\t\tSet the gdb server listen port. "
|
|
"(default port: " STRINGIFY(DEFAULT_GDB_LISTEN_PORT) ")\n"
|
|
;
|
|
|
|
|
|
int option_index = 0;
|
|
int c;
|
|
int q;
|
|
while ((c = getopt_long(argc, argv, "hv::d:s:1p:", long_options, &option_index)) != -1) {
|
|
switch (c) {
|
|
case 0:
|
|
printf("XXXXX Shouldn't really normally come here, only if there's no corresponding option\n");
|
|
printf("option %s", long_options[option_index].name);
|
|
if (optarg) {
|
|
printf(" with arg %s", optarg);
|
|
}
|
|
printf("\n");
|
|
break;
|
|
case 'h':
|
|
printf(help_str, argv[0]);
|
|
exit(EXIT_SUCCESS);
|
|
break;
|
|
case 'v':
|
|
if (optarg) {
|
|
st->logging_level = atoi(optarg);
|
|
} else {
|
|
st->logging_level = DEFAULT_LOGGING_LEVEL;
|
|
}
|
|
break;
|
|
case 'd':
|
|
if (strlen(optarg) > sizeof (st->devicename)) {
|
|
fprintf(stderr, "device name too long: %zd\n", strlen(optarg));
|
|
} else {
|
|
strcpy(st->devicename, optarg);
|
|
}
|
|
break;
|
|
case '1':
|
|
st->stlink_version = 1;
|
|
break;
|
|
case 's':
|
|
sscanf(optarg, "%i", &q);
|
|
if (q < 0 || q > 2) {
|
|
fprintf(stderr, "stlink version %d unknown!\n", q);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
st->stlink_version = q;
|
|
break;
|
|
case 'p':
|
|
sscanf(optarg, "%i", &q);
|
|
if (q < 0) {
|
|
fprintf(stderr, "Can't use a negative port to listen on: %d\n", q);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
st->listen_port = q;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (optind < argc) {
|
|
printf("non-option ARGV-elements: ");
|
|
while (optind < argc)
|
|
printf("%s ", argv[optind++]);
|
|
printf("\n");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int main(int argc, char** argv) {
|
|
|
|
stlink_t *sl = NULL;
|
|
|
|
st_state_t state;
|
|
memset(&state, 0, sizeof(state));
|
|
// set defaults...
|
|
state.stlink_version = 2;
|
|
state.logging_level = DEFAULT_LOGGING_LEVEL;
|
|
state.listen_port = DEFAULT_GDB_LISTEN_PORT;
|
|
parse_options(argc, argv, &state);
|
|
switch (state.stlink_version) {
|
|
case 2:
|
|
sl = stlink_open_usb(state.logging_level);
|
|
if(sl == NULL) return 1;
|
|
break;
|
|
case 1:
|
|
sl = stlink_v1_open(state.logging_level);
|
|
if(sl == NULL) return 1;
|
|
break;
|
|
}
|
|
|
|
printf("Chip ID is %08x, Core ID is %08x.\n", sl->chip_id, sl->core_id);
|
|
|
|
sl->verbose=0;
|
|
|
|
current_memory_map = make_memory_map(sl);
|
|
|
|
#ifdef __MINGW32__
|
|
WSADATA wsadata;
|
|
if (WSAStartup(MAKEWORD(2,2),&wsadata) !=0 ) {
|
|
goto winsock_error;
|
|
}
|
|
#endif
|
|
|
|
while(serve(sl, state.listen_port) == 0);
|
|
|
|
#ifdef __MINGW32__
|
|
winsock_error:
|
|
WSACleanup();
|
|
#endif
|
|
|
|
/* Switch back to mass storage mode before closing. */
|
|
stlink_run(sl);
|
|
stlink_exit_debug_mode(sl);
|
|
stlink_close(sl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const char* const memory_map_template_F4 =
|
|
"<?xml version=\"1.0\"?>"
|
|
"<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
|
|
" \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
|
|
"<memory-map>"
|
|
" <memory type=\"rom\" start=\"0x00000000\" length=\"0x100000\"/>" // code = sram, bootrom or flash; flash is bigger
|
|
" <memory type=\"ram\" start=\"0x10000000\" length=\"0x10000\"/>" // ccm ram
|
|
" <memory type=\"ram\" start=\"0x20000000\" length=\"0x20000\"/>" // sram
|
|
" <memory type=\"flash\" start=\"0x08000000\" length=\"0x10000\">" //Sectors 0..3
|
|
" <property name=\"blocksize\">0x4000</property>" //16kB
|
|
" </memory>"
|
|
" <memory type=\"flash\" start=\"0x08010000\" length=\"0x10000\">" //Sector 4
|
|
" <property name=\"blocksize\">0x10000</property>" //64kB
|
|
" </memory>"
|
|
" <memory type=\"flash\" start=\"0x08020000\" length=\"0x70000\">" //Sectors 5..11
|
|
" <property name=\"blocksize\">0x20000</property>" //128kB
|
|
" </memory>"
|
|
" <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
|
|
" <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
|
|
" <memory type=\"rom\" start=\"0x1fff0000\" length=\"0x7800\"/>" // bootrom
|
|
" <memory type=\"rom\" start=\"0x1fffc000\" length=\"0x10\"/>" // option byte area
|
|
"</memory-map>";
|
|
|
|
static const char* const memory_map_template =
|
|
"<?xml version=\"1.0\"?>"
|
|
"<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
|
|
" \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
|
|
"<memory-map>"
|
|
" <memory type=\"rom\" start=\"0x00000000\" length=\"0x%zx\"/>" // code = sram, bootrom or flash; flash is bigger
|
|
" <memory type=\"ram\" start=\"0x20000000\" length=\"0x%zx\"/>" // sram 8k
|
|
" <memory type=\"flash\" start=\"0x08000000\" length=\"0x%zx\">"
|
|
" <property name=\"blocksize\">0x%zx</property>"
|
|
" </memory>"
|
|
" <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
|
|
" <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
|
|
" <memory type=\"rom\" start=\"0x%08x\" length=\"0x%zx\"/>" // bootrom
|
|
" <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x8x\"/>" // option byte area
|
|
"</memory-map>";
|
|
|
|
char* make_memory_map(stlink_t *sl) {
|
|
/* This will be freed in serve() */
|
|
char* map = malloc(4096);
|
|
map[0] = '\0';
|
|
|
|
if(sl->chip_id==STM32_CHIPID_F4) {
|
|
strcpy(map, memory_map_template_F4);
|
|
} else {
|
|
snprintf(map, 4096, memory_map_template,
|
|
sl->flash_size,
|
|
sl->sram_size,
|
|
sl->flash_size, sl->flash_pgsz,
|
|
sl->sys_base, sl->sys_size);
|
|
}
|
|
return map;
|
|
}
|
|
|
|
|
|
/*
|
|
* DWT_COMP0 0xE0001020
|
|
* DWT_MASK0 0xE0001024
|
|
* DWT_FUNCTION0 0xE0001028
|
|
* DWT_COMP1 0xE0001030
|
|
* DWT_MASK1 0xE0001034
|
|
* DWT_FUNCTION1 0xE0001038
|
|
* DWT_COMP2 0xE0001040
|
|
* DWT_MASK2 0xE0001044
|
|
* DWT_FUNCTION2 0xE0001048
|
|
* DWT_COMP3 0xE0001050
|
|
* DWT_MASK3 0xE0001054
|
|
* DWT_FUNCTION3 0xE0001058
|
|
*/
|
|
|
|
#define DATA_WATCH_NUM 4
|
|
|
|
enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
|
|
|
|
struct code_hw_watchpoint {
|
|
stm32_addr_t addr;
|
|
uint8_t mask;
|
|
enum watchfun fun;
|
|
};
|
|
|
|
struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
|
|
|
|
static void init_data_watchpoints(stlink_t *sl) {
|
|
#ifdef DEBUG
|
|
printf("init watchpoints\n");
|
|
#endif
|
|
|
|
// set trcena in debug command to turn on dwt unit
|
|
stlink_write_debug32(sl, 0xE000EDFC,
|
|
stlink_read_debug32(sl, 0xE000EDFC) | (1<<24));
|
|
|
|
// make sure all watchpoints are cleared
|
|
for(int i = 0; i < DATA_WATCH_NUM; i++) {
|
|
data_watches[i].fun = WATCHDISABLED;
|
|
stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
|
|
}
|
|
}
|
|
|
|
static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
|
|
{
|
|
int i = 0;
|
|
uint32_t mask;
|
|
|
|
// computer mask
|
|
// find a free watchpoint
|
|
// configure
|
|
|
|
mask = -1;
|
|
i = len;
|
|
while(i) {
|
|
i >>= 1;
|
|
mask++;
|
|
}
|
|
|
|
if((mask != (uint32_t)-1) && (mask < 16)) {
|
|
for(i = 0; i < DATA_WATCH_NUM; i++) {
|
|
// is this an empty slot ?
|
|
if(data_watches[i].fun == WATCHDISABLED) {
|
|
#ifdef DEBUG
|
|
printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
|
|
#endif
|
|
|
|
data_watches[i].fun = wf;
|
|
data_watches[i].addr = addr;
|
|
data_watches[i].mask = mask;
|
|
|
|
// insert comparator address
|
|
stlink_write_debug32(sl, 0xE0001020 + i * 16, addr);
|
|
|
|
// insert mask
|
|
stlink_write_debug32(sl, 0xE0001024 + i * 16, mask);
|
|
|
|
// insert function
|
|
stlink_write_debug32(sl, 0xE0001028 + i * 16, wf);
|
|
|
|
// just to make sure the matched bit is clear !
|
|
stlink_read_debug32(sl, 0xE0001028 + i * 16);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
|
|
{
|
|
int i;
|
|
|
|
for(i = 0 ; i < DATA_WATCH_NUM; i++) {
|
|
if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
|
|
#ifdef DEBUG
|
|
printf("delete watchpoint %d addr %x\n", i, addr);
|
|
#endif
|
|
|
|
data_watches[i].fun = WATCHDISABLED;
|
|
stlink_write_debug32(sl, 0xe0001028 + i * 16, 0);
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
printf("failure: delete watchpoint addr %x\n", addr);
|
|
#endif
|
|
|
|
return -1;
|
|
}
|
|
|
|
#define CODE_BREAK_NUM 6
|
|
#define CODE_BREAK_LOW 0x01
|
|
#define CODE_BREAK_HIGH 0x02
|
|
|
|
struct code_hw_breakpoint {
|
|
stm32_addr_t addr;
|
|
int type;
|
|
};
|
|
|
|
struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
|
|
|
|
static void init_code_breakpoints(stlink_t *sl) {
|
|
memset(sl->q_buf, 0, 4);
|
|
stlink_write_debug32(sl, CM3_REG_FP_CTRL, 0x03 /*KEY | ENABLE4*/);
|
|
printf("KARL - should read back as 0x03, not 60 02 00 00\n");
|
|
stlink_read_debug32(sl, CM3_REG_FP_CTRL);
|
|
|
|
for(int i = 0; i < CODE_BREAK_NUM; i++) {
|
|
code_breaks[i].type = 0;
|
|
stlink_write_debug32(sl, CM3_REG_FP_COMP0 + i * 4, 0);
|
|
}
|
|
}
|
|
|
|
static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
|
|
stm32_addr_t fpb_addr = addr & ~0x3;
|
|
int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
|
|
|
|
if(addr & 1) {
|
|
fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
|
|
return -1;
|
|
}
|
|
|
|
int id = -1;
|
|
for(int i = 0; i < CODE_BREAK_NUM; i++) {
|
|
if(fpb_addr == code_breaks[i].addr ||
|
|
(set && code_breaks[i].type == 0)) {
|
|
id = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(id == -1) {
|
|
if(set) return -1; // Free slot not found
|
|
else return 0; // Breakpoint is already removed
|
|
}
|
|
|
|
struct code_hw_breakpoint* brk = &code_breaks[id];
|
|
|
|
brk->addr = fpb_addr;
|
|
|
|
if(set) brk->type |= type;
|
|
else brk->type &= ~type;
|
|
|
|
if(brk->type == 0) {
|
|
#ifdef DEBUG
|
|
printf("clearing hw break %d\n", id);
|
|
#endif
|
|
|
|
stlink_write_debug32(sl, 0xe0002008 + id * 4, 0);
|
|
} else {
|
|
uint32_t mask = (brk->addr) | 1 | (brk->type << 30);
|
|
|
|
#ifdef DEBUG
|
|
printf("setting hw break %d at %08x (%d)\n",
|
|
id, brk->addr, brk->type);
|
|
printf("reg %08x \n",
|
|
mask);
|
|
#endif
|
|
|
|
stlink_write_debug32(sl, 0xe0002008 + id * 4, mask);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
struct flash_block {
|
|
stm32_addr_t addr;
|
|
unsigned length;
|
|
uint8_t* data;
|
|
|
|
struct flash_block* next;
|
|
};
|
|
|
|
static struct flash_block* flash_root;
|
|
|
|
static int flash_add_block(stm32_addr_t addr, unsigned length, stlink_t *sl) {
|
|
|
|
if(addr < FLASH_BASE || addr + length > FLASH_BASE + sl->flash_size) {
|
|
fprintf(stderr, "flash_add_block: incorrect bounds\n");
|
|
return -1;
|
|
}
|
|
|
|
stlink_calculate_pagesize(sl, addr);
|
|
if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
|
|
fprintf(stderr, "flash_add_block: unaligned block\n");
|
|
return -1;
|
|
}
|
|
|
|
struct flash_block* new = malloc(sizeof(struct flash_block));
|
|
new->next = flash_root;
|
|
|
|
new->addr = addr;
|
|
new->length = length;
|
|
new->data = calloc(length, 1);
|
|
|
|
flash_root = new;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
|
|
unsigned int fit_blocks = 0, fit_length = 0;
|
|
|
|
for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
|
|
/* Block: ------X------Y--------
|
|
* Data: a-----b
|
|
* a--b
|
|
* a-----------b
|
|
* Block intersects with data, if:
|
|
* a < Y && b > x
|
|
*/
|
|
|
|
unsigned X = fb->addr, Y = fb->addr + fb->length;
|
|
unsigned a = addr, b = addr + length;
|
|
if(a < Y && b > X) {
|
|
// from start of the block
|
|
unsigned start = (a > X ? a : X) - X;
|
|
unsigned end = (b > Y ? Y : b) - X;
|
|
|
|
memcpy(fb->data + start, data, end - start);
|
|
|
|
fit_blocks++;
|
|
fit_length += end - start;
|
|
}
|
|
}
|
|
|
|
if(fit_blocks == 0) {
|
|
fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
|
|
return -1;
|
|
}
|
|
|
|
if(fit_length != length) {
|
|
fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
|
|
addr, length, fit_length);
|
|
fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int flash_go(stlink_t *sl) {
|
|
int error = -1;
|
|
|
|
// Some kinds of clock settings do not allow writing to flash.
|
|
stlink_reset(sl);
|
|
|
|
for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
|
|
#ifdef DEBUG
|
|
printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
|
|
#endif
|
|
|
|
unsigned length = fb->length;
|
|
for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
|
|
|
|
//Update FLASH_PAGE
|
|
stlink_calculate_pagesize(sl, page);
|
|
|
|
#ifdef DEBUG
|
|
printf("flash_do: page %08x\n", page);
|
|
#endif
|
|
|
|
if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
|
|
length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
stlink_reset(sl);
|
|
|
|
error = 0;
|
|
|
|
error:
|
|
for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
|
|
next = fb->next;
|
|
free(fb->data);
|
|
free(fb);
|
|
}
|
|
|
|
flash_root = NULL;
|
|
|
|
return error;
|
|
}
|
|
|
|
int serve(stlink_t *sl, int port) {
|
|
int sock = socket(AF_INET, SOCK_STREAM, 0);
|
|
if(sock < 0) {
|
|
perror("socket");
|
|
return 1;
|
|
}
|
|
|
|
unsigned int val = 1;
|
|
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
|
|
|
|
struct sockaddr_in serv_addr;
|
|
memset(&serv_addr,0,sizeof(struct sockaddr_in));
|
|
serv_addr.sin_family = AF_INET;
|
|
serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
|
|
serv_addr.sin_port = htons(port);
|
|
|
|
if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
|
|
perror("bind");
|
|
return 1;
|
|
}
|
|
|
|
if(listen(sock, 5) < 0) {
|
|
perror("listen");
|
|
return 1;
|
|
}
|
|
|
|
stlink_force_debug(sl);
|
|
stlink_reset(sl);
|
|
init_code_breakpoints(sl);
|
|
init_data_watchpoints(sl);
|
|
|
|
printf("Listening at *:%d...\n", port);
|
|
|
|
int client = accept(sock, NULL, NULL);
|
|
//signal (SIGINT, SIG_DFL);
|
|
if(client < 0) {
|
|
perror("accept");
|
|
return 1;
|
|
}
|
|
|
|
close(sock);
|
|
|
|
printf("GDB connected.\n");
|
|
|
|
/*
|
|
* To allow resetting the chip from GDB it is required to
|
|
* emulate attaching and detaching to target.
|
|
*/
|
|
unsigned int attached = 1;
|
|
|
|
while(1) {
|
|
char* packet;
|
|
|
|
int status = gdb_recv_packet(client, &packet);
|
|
if(status < 0) {
|
|
fprintf(stderr, "cannot recv: %d\n", status);
|
|
return 1;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
printf("recv: %s\n", packet);
|
|
#endif
|
|
|
|
char* reply = NULL;
|
|
reg regp;
|
|
|
|
switch(packet[0]) {
|
|
case 'q': {
|
|
if(packet[1] == 'P' || packet[1] == 'C' || packet[1] == 'L') {
|
|
reply = strdup("");
|
|
break;
|
|
}
|
|
|
|
char *separator = strstr(packet, ":"), *params = "";
|
|
if(separator == NULL) {
|
|
separator = packet + strlen(packet);
|
|
} else {
|
|
params = separator + 1;
|
|
}
|
|
|
|
unsigned queryNameLength = (separator - &packet[1]);
|
|
char* queryName = calloc(queryNameLength + 1, 1);
|
|
strncpy(queryName, &packet[1], queryNameLength);
|
|
|
|
#ifdef DEBUG
|
|
printf("query: %s;%s\n", queryName, params);
|
|
#endif
|
|
|
|
if(!strcmp(queryName, "Supported")) {
|
|
reply = strdup("PacketSize=3fff;qXfer:memory-map:read+");
|
|
} else if(!strcmp(queryName, "Xfer")) {
|
|
char *type, *op, *__s_addr, *s_length;
|
|
char *tok = params;
|
|
char *annex __attribute__((unused));
|
|
|
|
type = strsep(&tok, ":");
|
|
op = strsep(&tok, ":");
|
|
annex = strsep(&tok, ":");
|
|
__s_addr = strsep(&tok, ",");
|
|
s_length = tok;
|
|
|
|
unsigned addr = strtoul(__s_addr, NULL, 16),
|
|
length = strtoul(s_length, NULL, 16);
|
|
|
|
#ifdef DEBUG
|
|
printf("Xfer: type:%s;op:%s;annex:%s;addr:%d;length:%d\n",
|
|
type, op, annex, addr, length);
|
|
#endif
|
|
|
|
const char* data = NULL;
|
|
|
|
if(!strcmp(type, "memory-map") && !strcmp(op, "read"))
|
|
data = current_memory_map;
|
|
|
|
if(data) {
|
|
unsigned data_length = strlen(data);
|
|
if(addr + length > data_length)
|
|
length = data_length - addr;
|
|
|
|
if(length == 0) {
|
|
reply = strdup("l");
|
|
} else {
|
|
reply = calloc(length + 2, 1);
|
|
reply[0] = 'm';
|
|
strncpy(&reply[1], data, length);
|
|
}
|
|
}
|
|
} else if(!strncmp(queryName, "Rcmd,",4)) {
|
|
// Rcmd uses the wrong separator
|
|
char *separator = strstr(packet, ","), *params = "";
|
|
if(separator == NULL) {
|
|
separator = packet + strlen(packet);
|
|
} else {
|
|
params = separator + 1;
|
|
}
|
|
|
|
|
|
if (!strncmp(params,"7265",4)) {// resume
|
|
#ifdef DEBUG
|
|
printf("Rcmd: resume\n");
|
|
#endif
|
|
stlink_run(sl);
|
|
|
|
reply = strdup("OK");
|
|
} else if (!strncmp(params,"6861",4)) { //half
|
|
reply = strdup("OK");
|
|
|
|
stlink_force_debug(sl);
|
|
|
|
#ifdef DEBUG
|
|
printf("Rcmd: halt\n");
|
|
#endif
|
|
} else if (!strncmp(params,"7265",4)) { //reset
|
|
reply = strdup("OK");
|
|
|
|
stlink_force_debug(sl);
|
|
stlink_reset(sl);
|
|
init_code_breakpoints(sl);
|
|
init_data_watchpoints(sl);
|
|
|
|
#ifdef DEBUG
|
|
printf("Rcmd: reset\n");
|
|
#endif
|
|
} else {
|
|
#ifdef DEBUG
|
|
printf("Rcmd: %s\n", params);
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if(reply == NULL)
|
|
reply = strdup("");
|
|
|
|
free(queryName);
|
|
|
|
break;
|
|
}
|
|
|
|
case 'v': {
|
|
char *params = NULL;
|
|
char *cmdName = strtok_r(packet, ":;", ¶ms);
|
|
|
|
cmdName++; // vCommand -> Command
|
|
|
|
if(!strcmp(cmdName, "FlashErase")) {
|
|
char *__s_addr, *s_length;
|
|
char *tok = params;
|
|
|
|
__s_addr = strsep(&tok, ",");
|
|
s_length = tok;
|
|
|
|
unsigned addr = strtoul(__s_addr, NULL, 16),
|
|
length = strtoul(s_length, NULL, 16);
|
|
|
|
#ifdef DEBUG
|
|
printf("FlashErase: addr:%08x,len:%04x\n",
|
|
addr, length);
|
|
#endif
|
|
|
|
if(flash_add_block(addr, length, sl) < 0) {
|
|
reply = strdup("E00");
|
|
} else {
|
|
reply = strdup("OK");
|
|
}
|
|
} else if(!strcmp(cmdName, "FlashWrite")) {
|
|
char *__s_addr, *data;
|
|
char *tok = params;
|
|
|
|
__s_addr = strsep(&tok, ":");
|
|
data = tok;
|
|
|
|
unsigned addr = strtoul(__s_addr, NULL, 16);
|
|
unsigned data_length = status - (data - packet);
|
|
|
|
// Length of decoded data cannot be more than
|
|
// encoded, as escapes are removed.
|
|
// Additional byte is reserved for alignment fix.
|
|
uint8_t *decoded = calloc(data_length + 1, 1);
|
|
unsigned dec_index = 0;
|
|
for(unsigned int i = 0; i < data_length; i++) {
|
|
if(data[i] == 0x7d) {
|
|
i++;
|
|
decoded[dec_index++] = data[i] ^ 0x20;
|
|
} else {
|
|
decoded[dec_index++] = data[i];
|
|
}
|
|
}
|
|
|
|
// Fix alignment
|
|
if(dec_index % 2 != 0)
|
|
dec_index++;
|
|
|
|
#ifdef DEBUG
|
|
printf("binary packet %d -> %d\n", data_length, dec_index);
|
|
#endif
|
|
|
|
if(flash_populate(addr, decoded, dec_index) < 0) {
|
|
reply = strdup("E00");
|
|
} else {
|
|
reply = strdup("OK");
|
|
}
|
|
} else if(!strcmp(cmdName, "FlashDone")) {
|
|
if(flash_go(sl) < 0) {
|
|
reply = strdup("E00");
|
|
} else {
|
|
reply = strdup("OK");
|
|
}
|
|
} else if(!strcmp(cmdName, "Kill")) {
|
|
attached = 0;
|
|
|
|
reply = strdup("OK");
|
|
}
|
|
|
|
if(reply == NULL)
|
|
reply = strdup("");
|
|
|
|
break;
|
|
}
|
|
|
|
case 'c':
|
|
stlink_run(sl);
|
|
|
|
while(1) {
|
|
int status = gdb_check_for_interrupt(client);
|
|
if(status < 0) {
|
|
fprintf(stderr, "cannot check for int: %d\n", status);
|
|
return 1;
|
|
}
|
|
|
|
if(status == 1) {
|
|
stlink_force_debug(sl);
|
|
break;
|
|
}
|
|
|
|
stlink_status(sl);
|
|
if(sl->core_stat == STLINK_CORE_HALTED) {
|
|
break;
|
|
}
|
|
|
|
usleep(100000);
|
|
}
|
|
|
|
reply = strdup("S05"); // TRAP
|
|
break;
|
|
|
|
case 's':
|
|
stlink_step(sl);
|
|
|
|
reply = strdup("S05"); // TRAP
|
|
break;
|
|
|
|
case '?':
|
|
if(attached) {
|
|
reply = strdup("S05"); // TRAP
|
|
} else {
|
|
/* Stub shall reply OK if not attached. */
|
|
reply = strdup("OK");
|
|
}
|
|
break;
|
|
|
|
case 'g':
|
|
stlink_read_all_regs(sl, ®p);
|
|
|
|
reply = calloc(8 * 16 + 1, 1);
|
|
for(int i = 0; i < 16; i++)
|
|
sprintf(&reply[i * 8], "%08x", htonl(regp.r[i]));
|
|
|
|
break;
|
|
|
|
case 'p': {
|
|
unsigned id = strtoul(&packet[1], NULL, 16);
|
|
unsigned myreg = 0xDEADDEAD;
|
|
|
|
if(id < 16) {
|
|
stlink_read_reg(sl, id, ®p);
|
|
myreg = htonl(regp.r[id]);
|
|
} else if(id == 0x19) {
|
|
stlink_read_reg(sl, 16, ®p);
|
|
myreg = htonl(regp.xpsr);
|
|
} else {
|
|
reply = strdup("E00");
|
|
}
|
|
|
|
reply = calloc(8 + 1, 1);
|
|
sprintf(reply, "%08x", myreg);
|
|
|
|
break;
|
|
}
|
|
|
|
case 'P': {
|
|
char* s_reg = &packet[1];
|
|
char* s_value = strstr(&packet[1], "=") + 1;
|
|
|
|
unsigned reg = strtoul(s_reg, NULL, 16);
|
|
unsigned value = strtoul(s_value, NULL, 16);
|
|
|
|
if(reg < 16) {
|
|
stlink_write_reg(sl, ntohl(value), reg);
|
|
} else if(reg == 0x19) {
|
|
stlink_write_reg(sl, ntohl(value), 16);
|
|
} else {
|
|
reply = strdup("E00");
|
|
}
|
|
|
|
if(!reply) {
|
|
reply = strdup("OK");
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case 'G':
|
|
for(int i = 0; i < 16; i++) {
|
|
char str[9] = {0};
|
|
strncpy(str, &packet[1 + i * 8], 8);
|
|
uint32_t reg = strtoul(str, NULL, 16);
|
|
stlink_write_reg(sl, ntohl(reg), i);
|
|
}
|
|
|
|
reply = strdup("OK");
|
|
break;
|
|
|
|
case 'm': {
|
|
char* s_start = &packet[1];
|
|
char* s_count = strstr(&packet[1], ",") + 1;
|
|
|
|
stm32_addr_t start = strtoul(s_start, NULL, 16);
|
|
unsigned count = strtoul(s_count, NULL, 16);
|
|
|
|
unsigned adj_start = start % 4;
|
|
|
|
stlink_read_mem32(sl, start - adj_start, (count % 4 == 0) ?
|
|
count : count + 4 - (count % 4));
|
|
|
|
reply = calloc(count * 2 + 1, 1);
|
|
for(unsigned int i = 0; i < count; i++) {
|
|
reply[i * 2 + 0] = hex[sl->q_buf[i + adj_start] >> 4];
|
|
reply[i * 2 + 1] = hex[sl->q_buf[i + adj_start] & 0xf];
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case 'M': {
|
|
char* s_start = &packet[1];
|
|
char* s_count = strstr(&packet[1], ",") + 1;
|
|
char* hexdata = strstr(packet, ":") + 1;
|
|
|
|
stm32_addr_t start = strtoul(s_start, NULL, 16);
|
|
unsigned count = strtoul(s_count, NULL, 16);
|
|
|
|
for(unsigned int i = 0; i < count; i ++) {
|
|
char hex[3] = { hexdata[i*2], hexdata[i*2+1], 0 };
|
|
uint8_t byte = strtoul(hex, NULL, 16);
|
|
sl->q_buf[i] = byte;
|
|
}
|
|
|
|
if((count % 4) == 0 && (start % 4) == 0) {
|
|
stlink_write_mem32(sl, start, count);
|
|
} else {
|
|
stlink_write_mem8(sl, start, count);
|
|
}
|
|
|
|
reply = strdup("OK");
|
|
|
|
break;
|
|
}
|
|
|
|
case 'Z': {
|
|
char *endptr;
|
|
stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
|
|
stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
|
|
|
|
switch (packet[1]) {
|
|
case '1':
|
|
if(update_code_breakpoint(sl, addr, 1) < 0) {
|
|
reply = strdup("E00");
|
|
} else {
|
|
reply = strdup("OK");
|
|
}
|
|
break;
|
|
|
|
case '2': // insert write watchpoint
|
|
case '3': // insert read watchpoint
|
|
case '4': // insert access watchpoint
|
|
{
|
|
enum watchfun wf;
|
|
if(packet[1] == '2') {
|
|
wf = WATCHWRITE;
|
|
} else if(packet[1] == '3') {
|
|
wf = WATCHREAD;
|
|
} else {
|
|
wf = WATCHACCESS;
|
|
if(add_data_watchpoint(sl, wf, addr, len) < 0) {
|
|
reply = strdup("E00");
|
|
} else {
|
|
reply = strdup("OK");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
default:
|
|
reply = strdup("");
|
|
}
|
|
break;
|
|
}
|
|
case 'z': {
|
|
char *endptr;
|
|
stm32_addr_t addr = strtoul(&packet[3], &endptr, 16);
|
|
//stm32_addr_t len = strtoul(&endptr[1], NULL, 16);
|
|
|
|
switch (packet[1]) {
|
|
case '1': // remove breakpoint
|
|
update_code_breakpoint(sl, addr, 0);
|
|
reply = strdup("OK");
|
|
break;
|
|
|
|
case '2' : // remove write watchpoint
|
|
case '3' : // remove read watchpoint
|
|
case '4' : // remove access watchpoint
|
|
if(delete_data_watchpoint(sl, addr) < 0) {
|
|
reply = strdup("E00");
|
|
} else {
|
|
reply = strdup("OK");
|
|
break;
|
|
}
|
|
|
|
default:
|
|
reply = strdup("");
|
|
}
|
|
break;
|
|
}
|
|
|
|
case '!': {
|
|
/*
|
|
* Enter extended mode which allows restarting.
|
|
* We do support that always.
|
|
*/
|
|
|
|
reply = strdup("OK");
|
|
|
|
break;
|
|
}
|
|
|
|
case 'R': {
|
|
/* Reset the core. */
|
|
|
|
stlink_reset(sl);
|
|
init_code_breakpoints(sl);
|
|
init_data_watchpoints(sl);
|
|
|
|
attached = 1;
|
|
|
|
reply = strdup("OK");
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
reply = strdup("");
|
|
}
|
|
|
|
if(reply) {
|
|
#ifdef DEBUG
|
|
printf("send: %s\n", reply);
|
|
#endif
|
|
|
|
int result = gdb_send_packet(client, reply);
|
|
if(result != 0) {
|
|
fprintf(stderr, "cannot send: %d\n", result);
|
|
return 1;
|
|
}
|
|
|
|
free(reply);
|
|
}
|
|
|
|
free(packet);
|
|
}
|
|
|
|
return 0;
|
|
}
|