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| <h3 class="section">10.18 Copy Between Memory and a File</h3> |
| |
| <p><a name="index-dump_002frestore-files-791"></a><a name="index-append-data-to-a-file-792"></a><a name="index-dump-data-to-a-file-793"></a><a name="index-restore-data-from-a-file-794"></a> |
| You can use the commands <code>dump</code>, <code>append</code>, and |
| <code>restore</code> to copy data between target memory and a file. The |
| <code>dump</code> and <code>append</code> commands write data to a file, and the |
| <code>restore</code> command reads data from a file back into the inferior's |
| memory. Files may be in binary, Motorola S-record, Intel hex, |
| Tektronix Hex, or Verilog Hex format; however, <span class="sc">gdb</span> can only |
| append to binary files, and cannot read from Verilog Hex files. |
| |
| |
| <a name="index-dump-795"></a> |
| <dl><dt><code>dump </code><span class="roman">[</span><var>format</var><span class="roman">]</span><code> memory </code><var>filename</var> <var>start_addr</var> <var>end_addr</var><dt><code>dump </code><span class="roman">[</span><var>format</var><span class="roman">]</span><code> value </code><var>filename</var> <var>expr</var><dd>Dump the contents of memory from <var>start_addr</var> to <var>end_addr</var>, |
| or the value of <var>expr</var>, to <var>filename</var> in the given format. |
| |
| <p>The <var>format</var> parameter may be any one of: |
| <dl> |
| <dt><code>binary</code><dd>Raw binary form. |
| <br><dt><code>ihex</code><dd>Intel hex format. |
| <br><dt><code>srec</code><dd>Motorola S-record format. |
| <br><dt><code>tekhex</code><dd>Tektronix Hex format. |
| <br><dt><code>verilog</code><dd>Verilog Hex format. |
| </dl> |
| |
| <p><span class="sc">gdb</span> uses the same definitions of these formats as the |
| <span class="sc">gnu</span> binary utilities, like ‘<samp><span class="samp">objdump</span></samp>’ and ‘<samp><span class="samp">objcopy</span></samp>’. If |
| <var>format</var> is omitted, <span class="sc">gdb</span> dumps the data in raw binary |
| form. |
| |
| <p><a name="index-append-796"></a><br><dt><code>append </code><span class="roman">[</span><code>binary</code><span class="roman">]</span><code> memory </code><var>filename</var> <var>start_addr</var> <var>end_addr</var><dt><code>append </code><span class="roman">[</span><code>binary</code><span class="roman">]</span><code> value </code><var>filename</var> <var>expr</var><dd>Append the contents of memory from <var>start_addr</var> to <var>end_addr</var>, |
| or the value of <var>expr</var>, to the file <var>filename</var>, in raw binary form. |
| (<span class="sc">gdb</span> can only append data to files in raw binary form.) |
| |
| <p><a name="index-restore-797"></a><br><dt><code>restore </code><var>filename</var> <span class="roman">[</span><code>binary</code><span class="roman">]</span> <var>bias</var> <var>start</var> <var>end</var><dd>Restore the contents of file <var>filename</var> into memory. The |
| <code>restore</code> command can automatically recognize any known <span class="sc">bfd</span> |
| file format, except for raw binary. To restore a raw binary file you |
| must specify the optional keyword <code>binary</code> after the filename. |
| |
| <p>If <var>bias</var> is non-zero, its value will be added to the addresses |
| contained in the file. Binary files always start at address zero, so |
| they will be restored at address <var>bias</var>. Other bfd files have |
| a built-in location; they will be restored at offset <var>bias</var> |
| from that location. |
| |
| <p>If <var>start</var> and/or <var>end</var> are non-zero, then only data between |
| file offset <var>start</var> and file offset <var>end</var> will be restored. |
| These offsets are relative to the addresses in the file, before |
| the <var>bias</var> argument is applied. |
| |
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