+void _stlink_usb_read_all_regs(stlink_t *sl, reg *regp) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const cmd = sl->c_buf;
+ unsigned char* const data = sl->q_buf;
+ ssize_t size;
+ uint32_t rep_len = 84;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_READALLREGS;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
+ }
+ sl->q_len = (size_t) size;
+ stlink_print_data(sl);
+ for(i=0; i<16; i++)
+ regp->r[i]= read_uint32(sl->q_buf, i*4);
+ regp->xpsr = read_uint32(sl->q_buf, 64);
+ regp->main_sp = read_uint32(sl->q_buf, 68);
+ regp->process_sp = read_uint32(sl->q_buf, 72);
+ regp->rw = read_uint32(sl->q_buf, 76);
+ regp->rw2 = read_uint32(sl->q_buf, 80);
+ if (sl->verbose < 2)
+ return;
+
+ DLOG("xpsr = 0x%08x\n", read_uint32(sl->q_buf, 64));
+ DLOG("main_sp = 0x%08x\n", read_uint32(sl->q_buf, 68));
+ DLOG("process_sp = 0x%08x\n", read_uint32(sl->q_buf, 72));
+ DLOG("rw = 0x%08x\n", read_uint32(sl->q_buf, 76));
+ DLOG("rw2 = 0x%08x\n", read_uint32(sl->q_buf, 80));
+}
+
+void _stlink_usb_read_reg(stlink_t *sl, int r_idx, reg *regp) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ uint32_t r;
+ uint32_t rep_len = 4;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_READREG;
+ cmd[i++] = (uint8_t) r_idx;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
+ }
+ sl->q_len = (size_t) size;
+ stlink_print_data(sl);
+ r = read_uint32(sl->q_buf, 0);
+ DLOG("r_idx (%2d) = 0x%08x\n", r_idx, r);
+
+ switch (r_idx) {
+ case 16:
+ regp->xpsr = r;
+ break;
+ case 17:
+ regp->main_sp = r;
+ break;
+ case 18:
+ regp->process_sp = r;
+ break;
+ case 19:
+ regp->rw = r; /* XXX ?(primask, basemask etc.) */
+ break;
+ case 20:
+ regp->rw2 = r; /* XXX ?(primask, basemask etc.) */
+ break;
+ default:
+ regp->r[r_idx] = r;
+ }
+}
+
+void _stlink_usb_write_reg(stlink_t *sl, uint32_t reg, int idx) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ uint32_t rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_WRITEREG;
+ cmd[i++] = idx;
+ write_uint32(&cmd[i], reg);
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
+ }
+ sl->q_len = (size_t) size;
+ stlink_print_data(sl);
+}