adolphenom
75 lines
3.0 KiB
Java
75 lines
3.0 KiB
Java
package mars.mips.dump;
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import mars.Globals;
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import mars.mips.hardware.*;
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import java.io.*;
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/**
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* Intel's Hex memory initialization format
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* @author Leo Alterman
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* @version July 2011
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*/
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public class IntelHexDumpFormat extends AbstractDumpFormat {
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/**
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* Constructor. File extention is "hex".
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*/
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public IntelHexDumpFormat() {
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super("Intel hex format", "HEX", "Written as Intel Hex Memory File", "hex");
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}
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/**
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* Write MIPS memory contents according to the Memory Initialization File
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* (MIF) specification.
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*
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* @param file File in which to store MIPS memory contents.
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* @param firstAddress first (lowest) memory address to dump. In bytes but
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* must be on word boundary.
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* @param lastAddress last (highest) memory address to dump. In bytes but
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* must be on word boundary. Will dump the word that starts at this address.
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* @throws AddressErrorException if firstAddress is invalid or not on a word boundary.
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* @throws IOException if error occurs during file output.
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*/
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public void dumpMemoryRange(File file, int firstAddress, int lastAddress)
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throws AddressErrorException, IOException {
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PrintStream out = new PrintStream(new FileOutputStream(file));
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String string = null;
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try {
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for (int address = firstAddress; address <= lastAddress; address += Memory.WORD_LENGTH_BYTES) {
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Integer temp = Globals.memory.getRawWordOrNull(address);
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if (temp == null)
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break;
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string = Integer.toHexString(temp.intValue());
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while (string.length() < 8) {
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string = '0' + string;
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}
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String addr = Integer.toHexString(address-firstAddress);
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while (addr.length() < 4) {
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addr = '0' + addr;
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}
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String chksum;
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int tmp_chksum = 0;
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tmp_chksum += 4;
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tmp_chksum += 0xFF & (address-firstAddress);
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tmp_chksum += 0xFF & ((address-firstAddress)>>8);
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tmp_chksum += 0xFF & temp.intValue();
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tmp_chksum += 0xFF & (temp.intValue()>>8);
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tmp_chksum += 0xFF & (temp.intValue()>>16);
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tmp_chksum += 0xFF & (temp.intValue()>>24);
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tmp_chksum = tmp_chksum % 256;
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tmp_chksum = ~tmp_chksum + 1;
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chksum = Integer.toHexString(0xFF & tmp_chksum);
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if(chksum.length()==1) chksum = '0' + chksum;
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String finalstr = ":04"+addr+"00"+string+chksum;
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out.println(finalstr.toUpperCase());
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}
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out.println(":00000001FF");
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}
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finally {
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out.close();
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}
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}
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}
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