2 * Copyright © 2010 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 import java.util.concurrent.LinkedBlockingQueue;
23 import java.util.LinkedList;
24 import java.util.Iterator;
25 import altosui.AltosSerial;
26 import altosui.AltosRomconfig;
28 public class AltosDebug extends AltosSerial {
30 public static final byte WR_CONFIG = 0x1d;
31 public static final byte RD_CONFIG = 0x24;
32 public static final byte CONFIG_TIMERS_OFF = (1 << 3);
33 public static final byte CONFIG_DMA_PAUSE = (1 << 2);
34 public static final byte CONFIG_TIMER_SUSPEND = (1 << 1);
35 public static final byte SET_FLASH_INFO_PAGE = (1 << 0);
37 public static final byte GET_PC = 0x28;
38 public static final byte READ_STATUS = 0x34;
39 public static final byte STATUS_CHIP_ERASE_DONE = (byte) (1 << 7);
40 public static final byte STATUS_PCON_IDLE = (1 << 6);
41 public static final byte STATUS_CPU_HALTED = (1 << 5);
42 public static final byte STATUS_POWER_MODE_0 = (1 << 4);
43 public static final byte STATUS_HALT_STATUS = (1 << 3);
44 public static final byte STATUS_DEBUG_LOCKED = (1 << 2);
45 public static final byte STATUS_OSCILLATOR_STABLE = (1 << 1);
46 public static final byte STATUS_STACK_OVERFLOW = (1 << 0);
48 public static final byte SET_HW_BRKPNT = 0x3b;
49 public static byte HW_BRKPNT_N(byte n) { return (byte) ((n) << 3); }
50 public static final byte HW_BRKPNT_N_MASK = (0x3 << 3);
51 public static final byte HW_BRKPNT_ENABLE = (1 << 2);
53 public static final byte HALT = 0x44;
54 public static final byte RESUME = 0x4c;
55 public static byte DEBUG_INSTR(byte n) { return (byte) (0x54|(n)); }
56 public static final byte STEP_INSTR = 0x5c;
57 public static byte STEP_REPLACE(byte n) { return (byte) (0x64|(n)); }
58 public static final byte GET_CHIP_ID = 0x68;
63 void ensure_debug_mode() {
71 void dump_memory(String header, int address, byte[] bytes, int start, int len) {
72 System.out.printf("%s\n", header);
73 for (int j = 0; j < len; j++) {
76 System.out.printf("\n");
77 System.out.printf ("%04x:", address + j);
79 System.out.printf(" %02x", bytes[start + j]);
81 System.out.printf("\n");
87 public void write_memory(int address, byte[] bytes, int start, int len) {
89 // dump_memory("write_memory", address, bytes, start, len);
90 printf("O %x %x\n", len, address);
91 for (int i = 0; i < len; i++)
92 printf("%02x", bytes[start + i]);
95 public void write_memory(int address, byte[] bytes) {
96 write_memory(address, bytes, 0, bytes.length);
102 public byte[] read_memory(int address, int length)
103 throws IOException, InterruptedException {
104 byte[] data = new byte[length];
108 printf("I %x %x\n", length, address);
112 String line = get_reply().trim();
113 if (!Altos.ishex(line) || line.length() % 2 != 0)
114 throw new IOException(
116 ("Invalid reply \"%s\"", line));
117 int this_time = line.length() / 2;
118 for (int j = 0; j < this_time; j++)
119 data[start + j] = (byte) ((Altos.fromhex(line.charAt(j*2)) << 4) +
120 Altos.fromhex(line.charAt(j*2+1)));
124 // dump_memory("read_memory", address, data, 0, length);
130 * Write raw bytes to the debug link using the 'P' command
132 public void write_bytes(byte[] bytes) throws IOException {
135 while (i < bytes.length) {
136 int this_time = bytes.length - i;
140 for (int j = 0; j < this_time; j++)
141 printf(" %02x", bytes[i+j]);
147 public void write_byte(byte b) throws IOException {
148 byte[] bytes = { b };
153 * Read raw bytes from the debug link using the 'G' command
155 public byte[] read_bytes(int length)
156 throws IOException, InterruptedException {
160 printf("G %x\n", length);
162 byte[] data = new byte[length];
164 String line = get_reply().trim();
165 String tokens[] = line.split("\\s+");
166 for (int j = 0; j < tokens.length; j++) {
167 if (!Altos.ishex(tokens[j]) ||
168 tokens[j].length() != 2)
169 throw new IOException(
171 ("Invalid read_bytes reply \"%s\"", line));
173 data[i + j] = (byte) Integer.parseInt(tokens[j], 16);
174 } catch (NumberFormatException ne) {
175 throw new IOException(
177 ("Invalid read_bytes reply \"%s\"", line));
185 public byte read_byte() throws IOException, InterruptedException {
186 return read_bytes(1)[0];
189 public byte debug_instr(byte[] instruction) throws IOException, InterruptedException {
190 byte[] command = new byte[1 + instruction.length];
191 command[0] = DEBUG_INSTR((byte) instruction.length);
192 for (int i = 0; i < instruction.length; i++)
193 command[i+1] = instruction[i];
194 write_bytes(command);
198 public byte resume() throws IOException, InterruptedException {
203 public int read_uint16() throws IOException, InterruptedException {
204 byte[] d = read_bytes(2);
205 return ((int) (d[0] & 0xff) << 8) | (d[1] & 0xff);
208 public int read_uint8() throws IOException, InterruptedException {
209 byte[] d = read_bytes(1);
210 return (int) (d[0] & 0xff);
213 public int get_chip_id() throws IOException, InterruptedException {
214 write_byte(GET_CHIP_ID);
215 return read_uint16();
218 public int get_pc() throws IOException, InterruptedException {
220 return read_uint16();
223 public byte read_status() throws IOException, InterruptedException {
224 write_byte(READ_STATUS);
228 static final byte LJMP = 0x02;
230 public void set_pc(int pc) throws IOException, InterruptedException {
231 byte high = (byte) (pc >> 8);
232 byte low = (byte) pc;
233 byte[] jump_mem = { LJMP, high, low };
234 debug_instr(jump_mem);
237 public boolean check_connection() throws IOException, InterruptedException {
238 byte reply = read_status();
239 if ((reply & STATUS_CHIP_ERASE_DONE) == 0)
241 if ((reply & STATUS_PCON_IDLE) != 0)
243 if ((reply & STATUS_POWER_MODE_0) == 0)
248 public AltosRomconfig romconfig() {
250 byte[] bytes = read_memory(0xa0, 10);
251 return new AltosRomconfig(bytes, 0);
252 } catch (IOException ie) {
253 } catch (InterruptedException ie) {
255 return new AltosRomconfig();
261 public void reset() {