kopia lustrzana https://github.com/stlink-org/stlink
953 wiersze
21 KiB
C
953 wiersze
21 KiB
C
/* -*- tab-width:8 -*- */
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/*
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Copyright (C) 2011 Peter Zotov <whitequark@whitequark.org>
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stlink-common.h>
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#include "gdb-remote.h"
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#define FLASH_BASE 0x08000000
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#define FLASH_PAGE (sl->flash_pgsz)
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#define FLASH_PAGE_MASK (~((1 << 10) - 1))
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#define FLASH_SIZE (FLASH_PAGE * 128)
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static const char hex[] = "0123456789abcdef";
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static const char* current_memory_map = NULL;
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struct chip_params {
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uint32_t chip_id;
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char* description;
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uint32_t max_flash_size, flash_pagesize;
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uint32_t sram_size;
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uint32_t bootrom_base, bootrom_size;
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} const devices[] = {
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{ 0x412, "Low-density device",
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0x8000, 0x400, 0x2800, 0x1ffff000, 0x800 },
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{ 0x410, "Medium-density device",
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0x20000, 0x400, 0x5000, 0x1ffff000, 0x800 },
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{ 0x414, "High-density device",
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0x80000, 0x800, 0x10000, 0x1ffff000, 0x800 },
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{ 0x418, "Connectivity line device",
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0x40000, 0x800, 0x10000, 0x1fffb000, 0x4800 },
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{ 0x420, "Medium-density value line device",
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0x20000, 0x400, 0x2000, 0x1ffff000, 0x800 },
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{ 0x428, "High-density value line device",
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0x80000, 0x800, 0x8000, 0x1ffff000, 0x800 },
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{ 0x430, "XL-density device",
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0x100000, 0x800, 0x18000, 0x1fffe000, 0x1800 },
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{ 0 }
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};
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int serve(stlink_t *sl, int port);
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char* make_memory_map(const struct chip_params *params, uint32_t flash_size);
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int main(int argc, char** argv) {
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if(argc != 3) {
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fprintf(stderr, "Usage: %s <port> /dev/sgX\n", argv[0]);
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return 1;
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}
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// FIXME - hardcoded to usb....
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stlink_t *sl =stlink_open_usb(argv[2], 10);
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if (sl == NULL)
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return 1;
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if(stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE)
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stlink_enter_swd_mode(sl);
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uint32_t chip_id;
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stlink_read_mem32(sl, 0xE0042000, 4);
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chip_id = sl->q_buf[0] | (sl->q_buf[1] << 8) | (sl->q_buf[2] << 16) |
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(sl->q_buf[3] << 24);
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printf("Chip ID is %08x.\n", chip_id);
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const struct chip_params* params = NULL;
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for(int i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
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if(devices[i].chip_id == (chip_id & 0xFFF)) {
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params = &devices[i];
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break;
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}
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}
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if(params == NULL) {
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fprintf(stderr, "Cannot recognize the connected device!\n");
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return 0;
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}
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printf("Device connected: %s\n", params->description);
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printf("Device parameters: SRAM: 0x%x bytes, Flash: up to 0x%x bytes in pages of 0x%x bytes\n",
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params->sram_size, params->max_flash_size, params->flash_pagesize);
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FLASH_PAGE = params->flash_pagesize;
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uint32_t flash_size;
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stlink_read_mem32(sl, 0x1FFFF7E0, 4);
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flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
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printf("Flash size is %d KiB.\n", flash_size);
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// memory map is in 1k blocks.
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current_memory_map = make_memory_map(params, flash_size * 0x400);
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int port = atoi(argv[1]);
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while(serve(sl, port) == 0);
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stlink_close(sl);
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return 0;
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}
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static const char* const memory_map_template =
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"<?xml version=\"1.0\"?>"
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"<!DOCTYPE memory-map PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
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" \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"
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"<memory-map>"
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" <memory type=\"rom\" start=\"0x00000000\" length=\"0x%x\"/>" // code = sram, bootrom or flash; flash is bigger
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" <memory type=\"ram\" start=\"0x20000000\" length=\"0x%x\"/>" // sram 8k
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" <memory type=\"flash\" start=\"0x08000000\" length=\"0x%x\">"
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" <property name=\"blocksize\">0x%x</property>"
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" </memory>"
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" <memory type=\"ram\" start=\"0x40000000\" length=\"0x1fffffff\"/>" // peripheral regs
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" <memory type=\"ram\" start=\"0xe0000000\" length=\"0x1fffffff\"/>" // cortex regs
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" <memory type=\"rom\" start=\"0x%08x\" length=\"0x%x\"/>" // bootrom
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" <memory type=\"rom\" start=\"0x1ffff800\" length=\"0x8\"/>" // option byte area
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"</memory-map>";
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char* make_memory_map(const struct chip_params *params, uint32_t flash_size) {
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/* This will be freed in serve() */
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char* map = malloc(4096);
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map[0] = '\0';
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snprintf(map, 4096, memory_map_template,
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flash_size,
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params->sram_size,
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flash_size, params->flash_pagesize,
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params->bootrom_base, params->bootrom_size);
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return map;
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}
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/*
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* DWT_COMP0 0xE0001020
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* DWT_MASK0 0xE0001024
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* DWT_FUNCTION0 0xE0001028
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* DWT_COMP1 0xE0001030
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* DWT_MASK1 0xE0001034
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* DWT_FUNCTION1 0xE0001038
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* DWT_COMP2 0xE0001040
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* DWT_MASK2 0xE0001044
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* DWT_FUNCTION2 0xE0001048
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* DWT_COMP3 0xE0001050
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* DWT_MASK3 0xE0001054
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* DWT_FUNCTION3 0xE0001058
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*/
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#define DATA_WATCH_NUM 4
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enum watchfun { WATCHDISABLED = 0, WATCHREAD = 5, WATCHWRITE = 6, WATCHACCESS = 7 };
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struct code_hw_watchpoint {
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stm32_addr_t addr;
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uint8_t mask;
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enum watchfun fun;
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};
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struct code_hw_watchpoint data_watches[DATA_WATCH_NUM];
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static void init_data_watchpoints(stlink_t *sl) {
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#ifdef DEBUG
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printf("init watchpoints\n");
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#endif
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// set trcena in debug command to turn on dwt unit
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stlink_read_mem32(sl, 0xE000EDFC, 4);
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sl->q_buf[3] |= 1;
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stlink_write_mem32(sl, 0xE000EDFC, 4);
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// make sure all watchpoints are cleared
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memset(sl->q_buf, 0, 4);
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for(int i = 0; i < DATA_WATCH_NUM; i++) {
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data_watches[i].fun = WATCHDISABLED;
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stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
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}
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}
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static int add_data_watchpoint(stlink_t *sl, enum watchfun wf, stm32_addr_t addr, unsigned int len)
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{
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int i = 0;
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uint32_t mask;
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// computer mask
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// find a free watchpoint
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// configure
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mask = -1;
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i = len;
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while(i) {
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i >>= 1;
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mask++;
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}
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if((mask != -1) && (mask < 16)) {
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for(i = 0; i < DATA_WATCH_NUM; i++) {
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// is this an empty slot ?
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if(data_watches[i].fun == WATCHDISABLED) {
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#ifdef DEBUG
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printf("insert watchpoint %d addr %x wf %u mask %u len %d\n", i, addr, wf, mask, len);
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#endif
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data_watches[i].fun = wf;
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data_watches[i].addr = addr;
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data_watches[i].mask = mask;
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// insert comparator address
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sl->q_buf[0] = (addr & 0xff);
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sl->q_buf[1] = ((addr >> 8) & 0xff);
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sl->q_buf[2] = ((addr >> 16) & 0xff);
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sl->q_buf[3] = ((addr >> 24) & 0xff);
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stlink_write_mem32(sl, 0xE0001020 + i * 16, 4);
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// insert mask
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memset(sl->q_buf, 0, 4);
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sl->q_buf[0] = mask;
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stlink_write_mem32(sl, 0xE0001024 + i * 16, 4);
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// insert function
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memset(sl->q_buf, 0, 4);
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sl->q_buf[0] = wf;
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stlink_write_mem32(sl, 0xE0001028 + i * 16, 4);
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// just to make sure the matched bit is clear !
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stlink_read_mem32(sl, 0xE0001028 + i * 16, 4);
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return 0;
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}
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}
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}
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#ifdef DEBUG
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printf("failure: add watchpoints addr %x wf %u len %u\n", addr, wf, len);
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#endif
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return -1;
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}
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static int delete_data_watchpoint(stlink_t *sl, stm32_addr_t addr)
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{
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int i;
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for(i = 0 ; i < DATA_WATCH_NUM; i++) {
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if((data_watches[i].addr == addr) && (data_watches[i].fun != WATCHDISABLED)) {
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#ifdef DEBUG
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printf("delete watchpoint %d addr %x\n", i, addr);
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#endif
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memset(sl->q_buf, 0, 4);
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data_watches[i].fun = WATCHDISABLED;
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stlink_write_mem32(sl, 0xe0001028 + i * 16, 4);
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return 0;
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}
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}
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#ifdef DEBUG
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printf("failure: delete watchpoint addr %x\n", addr);
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#endif
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return -1;
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}
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#define CODE_BREAK_NUM 6
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#define CODE_BREAK_LOW 0x01
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#define CODE_BREAK_HIGH 0x02
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struct code_hw_breakpoint {
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stm32_addr_t addr;
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int type;
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};
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struct code_hw_breakpoint code_breaks[CODE_BREAK_NUM];
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static void init_code_breakpoints(stlink_t *sl) {
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memset(sl->q_buf, 0, 4);
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sl->q_buf[0] = 0x03; // KEY | ENABLE
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stlink_write_mem32(sl, 0xe0002000, 4);
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memset(sl->q_buf, 0, 4);
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for(int i = 0; i < CODE_BREAK_NUM; i++) {
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code_breaks[i].type = 0;
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stlink_write_mem32(sl, 0xe0002008 + i * 4, 4);
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}
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}
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static int update_code_breakpoint(stlink_t *sl, stm32_addr_t addr, int set) {
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stm32_addr_t fpb_addr = addr & ~0x3;
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int type = addr & 0x2 ? CODE_BREAK_HIGH : CODE_BREAK_LOW;
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if(addr & 1) {
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fprintf(stderr, "update_code_breakpoint: unaligned address %08x\n", addr);
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return -1;
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}
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int id = -1;
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for(int i = 0; i < CODE_BREAK_NUM; i++) {
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if(fpb_addr == code_breaks[i].addr ||
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(set && code_breaks[i].type == 0)) {
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id = i;
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break;
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}
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}
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if(id == -1) {
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if(set) return -1; // Free slot not found
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else return 0; // Breakpoint is already removed
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}
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struct code_hw_breakpoint* brk = &code_breaks[id];
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brk->addr = fpb_addr;
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if(set) brk->type |= type;
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else brk->type &= ~type;
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memset(sl->q_buf, 0, 4);
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if(brk->type == 0) {
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#ifdef DEBUG
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printf("clearing hw break %d\n", id);
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#endif
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stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
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} else {
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sl->q_buf[0] = ( brk->addr & 0xff) | 1;
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sl->q_buf[1] = ((brk->addr >> 8) & 0xff);
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sl->q_buf[2] = ((brk->addr >> 16) & 0xff);
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sl->q_buf[3] = ((brk->addr >> 24) & 0xff) | (brk->type << 6);
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#ifdef DEBUG
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printf("setting hw break %d at %08x (%d)\n",
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id, brk->addr, brk->type);
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printf("reg %02x %02x %02x %02x\n",
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sl->q_buf[3], sl->q_buf[2], sl->q_buf[1], sl->q_buf[0]);
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#endif
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stlink_write_mem32(sl, 0xe0002008 + id * 4, 4);
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}
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return 0;
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}
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struct flash_block {
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stm32_addr_t addr;
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unsigned length;
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uint8_t* data;
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struct flash_block* next;
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};
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static struct flash_block* flash_root;
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static int flash_add_block(stm32_addr_t addr, unsigned length,
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stlink_t *sl) {
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if(addr < FLASH_BASE || addr + length > FLASH_BASE + FLASH_SIZE) {
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fprintf(stderr, "flash_add_block: incorrect bounds\n");
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return -1;
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}
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if(addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0) {
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fprintf(stderr, "flash_add_block: unaligned block\n");
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return -1;
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}
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struct flash_block* new = malloc(sizeof(struct flash_block));
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new->next = flash_root;
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new->addr = addr;
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new->length = length;
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new->data = calloc(length, 1);
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flash_root = new;
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return 0;
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}
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static int flash_populate(stm32_addr_t addr, uint8_t* data, unsigned length) {
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int fit_blocks = 0, fit_length = 0;
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for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
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/* Block: ------X------Y--------
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* Data: a-----b
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* a--b
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* a-----------b
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* Block intersects with data, if:
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* a < Y && b > x
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*/
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unsigned X = fb->addr, Y = fb->addr + fb->length;
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unsigned a = addr, b = addr + length;
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if(a < Y && b > X) {
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// from start of the block
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unsigned start = (a > X ? a : X) - X;
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unsigned end = (b > Y ? Y : b) - X;
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memcpy(fb->data + start, data, end - start);
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fit_blocks++;
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fit_length += end - start;
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}
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}
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if(fit_blocks == 0) {
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fprintf(stderr, "Unfit data block %08x -> %04x\n", addr, length);
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return -1;
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}
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if(fit_length != length) {
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fprintf(stderr, "warning: data block %08x -> %04x truncated to %04x\n",
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addr, length, fit_length);
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fprintf(stderr, "(this is not an error, just a GDB glitch)\n");
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}
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return 0;
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}
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static int flash_go(stlink_t *sl) {
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int error = -1;
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// Some kinds of clock settings do not allow writing to flash.
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stlink_reset(sl);
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for(struct flash_block* fb = flash_root; fb; fb = fb->next) {
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#ifdef DEBUG
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printf("flash_do: block %08x -> %04x\n", fb->addr, fb->length);
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#endif
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unsigned length = fb->length;
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for(stm32_addr_t page = fb->addr; page < fb->addr + fb->length; page += FLASH_PAGE) {
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#ifdef DEBUG
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printf("flash_do: page %08x\n", page);
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#endif
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stlink_erase_flash_page(sl, page);
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if(stlink_write_flash(sl, page, fb->data + (page - fb->addr),
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length > FLASH_PAGE ? FLASH_PAGE : length) < 0)
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goto error;
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}
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}
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stlink_reset(sl);
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error = 0;
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error:
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for(struct flash_block* fb = flash_root, *next; fb; fb = next) {
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next = fb->next;
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free(fb->data);
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free(fb);
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}
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flash_root = NULL;
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return error;
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}
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int serve(stlink_t *sl, int port) {
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int sock = socket(AF_INET, SOCK_STREAM, 0);
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if(sock < 0) {
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perror("socket");
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return 1;
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}
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unsigned int val = 1;
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setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
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struct sockaddr_in serv_addr = {0};
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
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serv_addr.sin_port = htons(port);
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if(bind(sock, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
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perror("bind");
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return 1;
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}
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if(listen(sock, 5) < 0) {
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perror("listen");
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return 1;
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}
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stlink_force_debug(sl);
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stlink_reset(sl);
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init_code_breakpoints(sl);
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init_data_watchpoints(sl);
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printf("Listening at *:%d...\n", port);
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int client = accept(sock, NULL, NULL);
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|
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, *annex, *s_addr, *s_length;
|
|
char *tok = params;
|
|
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
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(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(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(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;
|
|
}
|