*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
-package org.altusmetrum.altoslib_1;
+package org.altusmetrum.altoslib_11;
import java.io.*;
public int serial_number;
public int radio_calibration;
- static int get_int(byte[] bytes, int start, int len) {
+ static private int find_offset(AltosHexfile hexfile, String name, int len) throws AltosNoSymbol {
+ AltosHexsym symbol = hexfile.lookup_symbol(name);
+ if (symbol == null)
+ throw new AltosNoSymbol(name);
+ int offset = (int) symbol.address - hexfile.address;
+ if (offset < 0 || hexfile.data.length < offset + len)
+ throw new AltosNoSymbol(name);
+ return offset;
+ }
+
+ static int get_int(AltosHexfile hexfile, String name, int len) throws AltosNoSymbol {
+ byte[] bytes = hexfile.data;
+ int start = find_offset(hexfile, name, len);
+
int v = 0;
int o = 0;
while (len > 0) {
return v;
}
- static void put_int(int value, byte[] bytes, int start, int len) {
+ static void put_int(int value, AltosHexfile hexfile, String name, int len) throws AltosNoSymbol, IOException {
+ byte[] bytes = hexfile.data;
+ int start = find_offset(hexfile, name, len);
+
while (len > 0) {
bytes[start] = (byte) (value & 0xff);
start++;
}
}
- static void put_string(String value, byte[] bytes, int start) {
+ static void put_string(String value, AltosHexfile hexfile, String name) throws AltosNoSymbol {
+ byte[] bytes = hexfile.data;
+ int start = find_offset(hexfile, name, value.length());
+
for (int i = 0; i < value.length(); i++)
bytes[start + i] = (byte) value.charAt(i);
}
static final int AO_USB_DESC_STRING = 3;
- static void put_usb_serial(int value, byte[] bytes, int start) {
- int offset = start + 0xa;
+ static void put_usb_serial(int value, AltosHexfile hexfile, String name) throws AltosNoSymbol {
+ byte[] bytes = hexfile.data;
+ int start = find_offset(hexfile, name, 2);
+
int string_num = 0;
- while (offset < bytes.length && bytes[offset] != 0) {
- if (bytes[offset + 1] == AO_USB_DESC_STRING) {
+ while (start < bytes.length && bytes[start] != 0) {
+ if (bytes[start + 1] == AO_USB_DESC_STRING) {
++string_num;
if (string_num == 4)
break;
}
- offset += ((int) bytes[offset]) & 0xff;
+ start += ((int) bytes[start]) & 0xff;
}
- if (offset >= bytes.length || bytes[offset] == 0)
- return;
- int len = ((((int) bytes[offset]) & 0xff) - 2) / 2;
+ if (start >= bytes.length || bytes[start] == 0)
+ throw new AltosNoSymbol(name);
+
+ int len = ((((int) bytes[start]) & 0xff) - 2) / 2;
String fmt = String.format("%%0%dd", len);
String s = String.format(fmt, value);
- if (s.length() != len) {
- System.out.printf("weird usb length issue %s isn't %d\n",
- s, len);
- return;
- }
+ if (s.length() != len)
+ throw new AltosNoSymbol(String.format("weird usb length issue %s isn't %d\n", s, len));
+
for (int i = 0; i < len; i++) {
- bytes[offset + 2 + i*2] = (byte) s.charAt(i);
- bytes[offset + 2 + i*2+1] = 0;
+ bytes[start + 2 + i*2] = (byte) s.charAt(i);
+ bytes[start + 2 + i*2+1] = 0;
}
}
- public AltosRomconfig(byte[] bytes, int offset) {
- version = get_int(bytes, offset + 0, 2);
- check = get_int(bytes, offset + 2, 2);
- if (check == (~version & 0xffff)) {
- switch (version) {
- case 2:
- case 1:
- serial_number = get_int(bytes, offset + 4, 2);
- radio_calibration = get_int(bytes, offset + 6, 4);
- valid = true;
- break;
+ final static String ao_romconfig_version = "ao_romconfig_version";
+ final static String ao_romconfig_check = "ao_romconfig_check";
+ final static String ao_serial_number = "ao_serial_number";
+ final static String ao_radio_cal = "ao_radio_cal";
+ final static String ao_usb_descriptors = "ao_usb_descriptors";
+
+ public AltosRomconfig(AltosHexfile hexfile) {
+ try {
+ version = get_int(hexfile, ao_romconfig_version, 2);
+ check = get_int(hexfile, ao_romconfig_check, 2);
+ if (check == (~version & 0xffff)) {
+ switch (version) {
+ case 2:
+ case 1:
+ serial_number = get_int(hexfile, ao_serial_number, 2);
+ try {
+ radio_calibration = get_int(hexfile, ao_radio_cal, 4);
+ } catch (AltosNoSymbol missing) {
+ radio_calibration = 0;
+ }
+ valid = true;
+ break;
+ }
}
+ } catch (AltosNoSymbol missing) {
+ valid = false;
}
}
- public AltosRomconfig(AltosHexfile hexfile) {
- this(hexfile.data, 0xa0 - hexfile.address);
+ private final static String[] fetch_names = {
+ ao_romconfig_version,
+ ao_romconfig_check,
+ ao_serial_number,
+ ao_radio_cal
+ };
+
+ private final static String[] required_names = {
+ ao_romconfig_version,
+ ao_romconfig_check,
+ ao_serial_number
+ };
+
+ private static boolean name_required(String name) {
+ for (String required : required_names)
+ if (name.equals(required))
+ return true;
+ return false;
}
- public void write(byte[] bytes, int offset) throws IOException {
+ public static int fetch_base(AltosHexfile hexfile) throws AltosNoSymbol {
+ int base = 0x7fffffff;
+ for (String name : fetch_names) {
+ try {
+ int addr = find_offset(hexfile, name, 2) + hexfile.address;
+ if (addr < base)
+ base = addr;
+ } catch (AltosNoSymbol ns) {
+ if (name_required(name))
+ throw (ns);
+ }
+ }
+ return base;
+ }
+
+ public static int fetch_bounds(AltosHexfile hexfile) throws AltosNoSymbol {
+ int bounds = 0;
+ for (String name : fetch_names) {
+ try {
+ int addr = find_offset(hexfile, name, 2) + hexfile.address;
+ if (addr > bounds)
+ bounds = addr;
+ } catch (AltosNoSymbol ns) {
+ if (name_required(name))
+ throw (ns);
+ }
+ }
+ return bounds + 2;
+ }
+
+ public void write (AltosHexfile hexfile) throws IOException {
if (!valid)
throw new IOException("rom configuration invalid");
- if (offset < 0 || bytes.length < offset + 10)
- throw new IOException("image cannot contain rom config");
-
- AltosRomconfig existing = new AltosRomconfig(bytes, offset);
+ AltosRomconfig existing = new AltosRomconfig(hexfile);
if (!existing.valid)
throw new IOException("image does not contain existing rom config");
- switch (existing.version) {
- case 2:
- put_usb_serial(serial_number, bytes, offset);
- case 1:
- put_int(serial_number, bytes, offset + 4, 2);
- put_int(radio_calibration, bytes, offset + 6, 4);
- break;
+ try {
+ switch (existing.version) {
+ case 2:
+ try {
+ put_usb_serial(serial_number, hexfile, ao_usb_descriptors);
+ } catch (AltosNoSymbol missing) {
+ }
+ /* fall through ... */
+ case 1:
+ put_int(serial_number, hexfile, ao_serial_number, 2);
+ try {
+ put_int(radio_calibration, hexfile, ao_radio_cal, 4);
+ } catch (AltosNoSymbol missing) {
+ }
+ break;
+ }
+ } catch (AltosNoSymbol missing) {
+ throw new IOException(missing.getMessage());
}
- }
- public void write (AltosHexfile hexfile) throws IOException {
- write(hexfile.data, 0xa0 - hexfile.address);
AltosRomconfig check = new AltosRomconfig(hexfile);
- if (!check.valid())
+ if (!check.valid)
throw new IOException("writing new rom config failed\n");
}
projects / fw / altos / blobdiff