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<title>1/arc</title>
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<nav role="navigation">
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<h1><a href="../webs.html">Sources</a></h1>
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<ul>
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<li><a href="../compiler.html"><b>compiler</b></a></li>
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<li><a href="../other.html">other tools</a></li>
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<li><a href="../extensions.html">extensions and kits</a></li>
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<li><a href="../units.html">unit test tools</a></li>
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</ul>
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<h2>Compiler Webs</h2>
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<ul>
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<li><a href="../inbuild/index.html">inbuild</a></li>
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<li><a href="../inform7/index.html">inform7</a></li>
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<li><a href="../inter/index.html">inter</a></li>
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</ul>
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<h2>Inbuild Modules</h2>
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<ul>
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<li><a href="../inbuild-module/index.html">inbuild</a></li>
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<li><a href="../arch-module/index.html">arch</a></li>
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<li><a href="../words-module/index.html">words</a></li>
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<li><a href="../syntax-module/index.html">syntax</a></li>
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<h2>Inform7 Modules</h2>
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<ul>
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<li><a href="../core-module/index.html">core</a></li>
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<li><a href="../problems-module/index.html">problems</a></li>
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<li><a href="../inflections-module/index.html">inflections</a></li>
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<li><a href="../linguistics-module/index.html">linguistics</a></li>
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<li><a href="../kinds-module/index.html">kinds</a></li>
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<li><a href="../if-module/index.html">if</a></li>
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<li><a href="../multimedia-module/index.html">multimedia</a></li>
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<li><a href="../index-module/index.html">index</a></li>
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<h2>Inter Modules</h2>
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<ul>
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<li><a href="../inter-module/index.html">inter</a></li>
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<li><a href="../building-module/index.html">building</a></li>
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<li><a href="../codegen-module/index.html">codegen</a></li>
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</ul>
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<h2>Foundation</h2>
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<ul>
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<li><a href="../../../inweb/docs/foundation-module/index.html">foundation</a></li>
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<main role="main">
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<!--Weave of '1/li' generated by 7-->
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<ul class="crumbs"><li><a href="../webs.html">Source</a></li><li><a href="../compiler.html">Compiler Modules</a></li><li><a href="index.html">codegen</a></li><li><a href="index.html#1">Chapter 1: Setting Up</a></li><li><b>Link Instructions</b></li></ul><p class="purpose">Inter often needs to assimilate or otherwise deal with architecture-neutral kits of linkable material, and this is where such requirements are noted.</p>
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<ul class="toc"><li><a href="#SP1">§1. </a></li><li><a href="#SP2">§2. Link stage</a></li></ul><hr class="tocbar">
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<p class="inwebparagraph"><a id="SP1"></a><b>§1. </b></p>
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<pre class="display">
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<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">struct</span><span class="plain"> </span><span class="reserved">link_instruction</span><span class="plain"> {</span>
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<span class="reserved">struct</span><span class="plain"> </span><span class="identifier">pathname</span><span class="plain"> *</span><span class="identifier">location</span><span class="plain">;</span>
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<span class="reserved">struct</span><span class="plain"> </span><span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">attachment_point</span><span class="plain">;</span>
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<span class="identifier">MEMORY_MANAGEMENT</span>
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<span class="plain">} </span><span class="reserved">link_instruction</span><span class="plain">;</span>
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<span class="reserved">link_instruction</span><span class="plain"> *</span><span class="functiontext">CodeGen::LinkInstructions::new</span><span class="plain">(</span><span class="identifier">pathname</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">attach</span><span class="plain">) {</span>
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<span class="reserved">link_instruction</span><span class="plain"> *</span><span class="identifier">link</span><span class="plain"> = </span><span class="identifier">CREATE</span><span class="plain">(</span><span class="reserved">link_instruction</span><span class="plain">);</span>
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<span class="identifier">link</span><span class="plain">-</span><span class="element">>location</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">;</span>
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<span class="identifier">link</span><span class="plain">-</span><span class="element">>attachment_point</span><span class="plain"> = </span><span class="identifier">Str::duplicate</span><span class="plain">(</span><span class="identifier">attach</span><span class="plain">);</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">link</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function CodeGen::LinkInstructions::new appears nowhere else.</p>
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<p class="endnote">The structure link_instruction is private to this section.</p>
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<p class="inwebparagraph"><a id="SP2"></a><b>§2. Link stage. </b></p>
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<pre class="display">
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">CodeGen::LinkInstructions::create_pipeline_stage</span><span class="plain">(</span><span class="reserved">void</span><span class="plain">) {</span>
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<span class="functiontext">CodeGen::Stage::new</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"link"</span><span class="plain">, </span><span class="functiontext">CodeGen::LinkInstructions::run_link_stage</span><span class="plain">, </span><span class="constant">NO_STAGE_ARG</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
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<span class="plain">}</span>
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<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">CodeGen::LinkInstructions::run_link_stage</span><span class="plain">(</span><span class="reserved">pipeline_step</span><span class="plain"> *</span><span class="identifier">step</span><span class="plain">) {</span>
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<span class="reserved">link_instruction</span><span class="plain"> *</span><span class="identifier">req</span><span class="plain">;</span>
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<span class="identifier">LOOP_OVER_LINKED_LIST</span><span class="plain">(</span><span class="identifier">req</span><span class="plain">, </span><span class="reserved">link_instruction</span><span class="plain">, </span><span class="identifier">step</span><span class="plain">-</span><span class="element">>requirements_list</span><span class="plain">) {</span>
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<span class="identifier">inter_architecture</span><span class="plain"> *</span><span class="identifier">A</span><span class="plain"> = </span><span class="functiontext">CodeGen::Architecture::current</span><span class="plain">();</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">A</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">Errors::fatal</span><span class="plain">(</span><span class="string">"no -architecture given"</span><span class="plain">);</span>
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<span class="identifier">filename</span><span class="plain"> *</span><span class="identifier">arch_file</span><span class="plain"> = </span><span class="identifier">Architectures::canonical_binary</span><span class="plain">(</span><span class="identifier">req</span><span class="plain">-</span><span class="element">>location</span><span class="plain">, </span><span class="identifier">A</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">TextFiles::exists</span><span class="plain">(</span><span class="identifier">arch_file</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"no arch file for requirement"</span><span class="plain">);</span>
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<span class="identifier">inter_tree</span><span class="plain"> *</span><span class="identifier">sidecar</span><span class="plain"> = </span><span class="identifier">Inter::Tree::new</span><span class="plain">();</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Inter::Binary::test_file</span><span class="plain">(</span><span class="identifier">arch_file</span><span class="plain">)) </span><span class="identifier">Inter::Binary::read</span><span class="plain">(</span><span class="identifier">sidecar</span><span class="plain">, </span><span class="identifier">arch_file</span><span class="plain">);</span>
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<span class="reserved">else</span><span class="plain"> </span><span class="identifier">Inter::Textual::read</span><span class="plain">(</span><span class="identifier">sidecar</span><span class="plain">, </span><span class="identifier">arch_file</span><span class="plain">);</span>
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<span class="identifier">inter_package</span><span class="plain"> *</span><span class="identifier">pack</span><span class="plain"> = </span><span class="identifier">Inter::Packages::by_url</span><span class="plain">(</span><span class="identifier">sidecar</span><span class="plain">, </span><span class="identifier">req</span><span class="plain">-</span><span class="element">>attachment_point</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">pack</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) {</span>
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<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">STDERR</span><span class="plain">, </span><span class="string">"sought attachment material at: %S in %f\</span><span class="plain">n</span><span class="string">"</span><span class="plain">, </span><span class="identifier">req</span><span class="plain">-</span><span class="element">>attachment_point</span><span class="plain">, </span><span class="identifier">arch_file</span><span class="plain">);</span>
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<span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"unable to find attachment point package"</span><span class="plain">);</span>
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<span class="plain">}</span>
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<span class="identifier">Inter::Transmigration::move</span><span class="plain">(</span><span class="identifier">pack</span><span class="plain">, </span><span class="identifier">Site::main_package</span><span class="plain">(</span><span class="identifier">step</span><span class="plain">-</span><span class="element">>repository</span><span class="plain">), </span><span class="identifier">FALSE</span><span class="plain">);</span>
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<span class="plain">}</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function CodeGen::LinkInstructions::create_pipeline_stage is used in 1/stg (<a href="1-stg.html#SP2">§2</a>).</p>
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<p class="endnote">The function CodeGen::LinkInstructions::run_link_stage appears nowhere else.</p>
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<hr class="tocbar">
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<ul class="toc"><li><a href="1-arc.html">Back to 'Architecture'</a></li><li><a href="1-ppl.html">Continue with 'Pipelines'</a></li></ul><hr class="tocbar">
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