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| <h5 class="subsubsection">3.6.8.1 Output Section Type</h5> |
| |
| <p>Each output section may have a type. The type is a keyword in |
| parentheses. The following types are defined: |
| |
| <dl> |
| <dt><code>NOLOAD</code><dd>The section should be marked as not loadable, so that it will not be |
| loaded into memory when the program is run. |
| <br><dt><code>DSECT</code><dt><code>COPY</code><dt><code>INFO</code><dt><code>OVERLAY</code><dd>These type names are supported for backward compatibility, and are |
| rarely used. They all have the same effect: the section should be |
| marked as not allocatable, so that no memory is allocated for the |
| section when the program is run. |
| </dl> |
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| <p><a name="index-NOLOAD-435"></a><a name="index-prevent-unnecessary-loading-436"></a><a name="index-loading_002c-preventing-437"></a>The linker normally sets the attributes of an output section based on |
| the input sections which map into it. You can override this by using |
| the section type. For example, in the script sample below, the |
| ‘<samp><span class="samp">ROM</span></samp>’ section is addressed at memory location ‘<samp><span class="samp">0</span></samp>’ and does not |
| need to be loaded when the program is run. The contents of the |
| ‘<samp><span class="samp">ROM</span></samp>’ section will appear in the linker output file as usual. |
| <pre class="smallexample"> SECTIONS { |
| ROM 0 (NOLOAD) : { ... } |
| ... |
| } |
| </pre> |
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