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Node:<a name="ESA%2f390%20Notes">ESA/390 Notes</a>,

Next:<a rel="next" accesskey="n" href="ESA-390-Options.html#ESA%2f390%20Options">ESA/390 Options</a>,

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<h4 class="section">Notes</h4>



   <p>The ESA/390 <code>as</code> port is currently intended to be a back-end

for the <small>GNU</small> <small>CC</small> compiler.  It is not HLASM compatible, although

it does support a subset of some of the HLASM directives.  The only

supported binary file format is ELF; none of the usual MVS/VM/OE/USS

object file formats, such as ESD or XSD, are supported.



   <p>When used with the <small>GNU</small> <small>CC</small> compiler, the ESA/390 <code>as</code>

will produce correct, fully relocated, functional binaries, and has been

used to compile and execute large projects.  However, many aspects should

still be considered experimental; these include shared library support,

dynamically loadable objects, and any relocation other than the 31-bit

relocation.



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