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%
% (c) The University of Glasgow 2000-2006
%
ByteCodeItbls: Generate infotables for interpreter-made bytecodes
\begin{code}
<pre><a name="line-1"></a><span class='hs-comment'>{-# OPTIONS -optc-DNON_POSIX_SOURCE #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>{-# OPTIONS -w #-}</span>
<a name="line-4"></a><span class='hs-comment'>-- The above warning supression flag is a temporary kludge.</span>
<a name="line-5"></a><span class='hs-comment'>-- While working on this module you are encouraged to remove it and fix</span>
<a name="line-6"></a><span class='hs-comment'>-- any warnings in the module. See</span>
<a name="line-7"></a><span class='hs-comment'>-- <a href="http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings">http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings</a></span>
<a name="line-8"></a><span class='hs-comment'>-- for details</span>
<a name="line-9"></a>
<a name="line-10"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>ByteCodeItbls</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ItblEnv</span><span class='hs-layout'>,</span> <span class='hs-conid'>ItblPtr</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>itblCode</span><span class='hs-layout'>,</span> <span class='hs-varid'>mkITbls</span>
<a name="line-11"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>StgInfoTable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-12"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-13"></a>
<a name="line-14"></a><span class='hs-cpp'>#include "HsVersions.h"</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Name</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Name</span><span class='hs-layout'>,</span> <span class='hs-varid'>getName</span> <span class='hs-layout'>)</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>NameEnv</span>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>SMRep</span> <span class='hs-layout'>(</span> <span class='hs-varid'>typeCgRep</span> <span class='hs-layout'>)</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>DataCon</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DataCon</span><span class='hs-layout'>,</span> <span class='hs-varid'>dataConRepArgTys</span><span class='hs-layout'>,</span> <span class='hs-varid'>dataConIdentity</span> <span class='hs-layout'>)</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>TyCon</span> <span class='hs-layout'>(</span> <span class='hs-conid'>TyCon</span><span class='hs-layout'>,</span> <span class='hs-varid'>tyConFamilySize</span><span class='hs-layout'>,</span> <span class='hs-varid'>isDataTyCon</span><span class='hs-layout'>,</span> <span class='hs-varid'>tyConDataCons</span> <span class='hs-layout'>)</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Constants</span> <span class='hs-layout'>(</span> <span class='hs-varid'>mIN_PAYLOAD_SIZE</span><span class='hs-layout'>,</span> <span class='hs-varid'>wORD_SIZE</span> <span class='hs-layout'>)</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>CgHeapery</span> <span class='hs-layout'>(</span> <span class='hs-varid'>mkVirtHeapOffsets</span> <span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>FastString</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FastString</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Util</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Outputable</span>
<a name="line-26"></a>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Bits</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Bits</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>shiftR</span> <span class='hs-layout'>)</span>
<a name="line-31"></a>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Exts</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Int</span><span class='hs-layout'>(</span><span class='hs-conid'>I</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>addr2Int</span><span class='hs-cpp'>#</span> <span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Ptr</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-34"></a>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Debug</span><span class='hs-varop'>.</span><span class='hs-conid'>Trace</span>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Printf</span>
</pre>\end{code}
%************************************************************************
%* *
\subsection{Manufacturing of info tables for DataCons}
%* *
%************************************************************************
\begin{code}
<pre><a name="line-1"></a><a name="ItblPtr"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>ItblPtr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ItblPtr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-2"></a>
<a name="line-3"></a><a name="itblCode"></a><span class='hs-definition'>itblCode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ItblPtr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span>
<a name="line-4"></a><span class='hs-definition'>itblCode</span> <span class='hs-layout'>(</span><span class='hs-conid'>ItblPtr</span> <span class='hs-varid'>ptr</span><span class='hs-layout'>)</span>
<a name="line-5"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>ghciTablesNextToCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>castPtr</span> <span class='hs-varid'>ptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>conInfoTableSizeB</span>
<a name="line-6"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>castPtr</span> <span class='hs-varid'>ptr</span>
<a name="line-7"></a>
<a name="line-8"></a><a name="conInfoTableSizeB"></a><span class='hs-comment'>-- XXX bogus</span>
<a name="line-9"></a><span class='hs-definition'>conInfoTableSizeB</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>3</span> <span class='hs-varop'>*</span> <span class='hs-varid'>wORD_SIZE</span>
<a name="line-10"></a>
<a name="line-11"></a><a name="ItblEnv"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ItblEnv</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NameEnv</span> <span class='hs-layout'>(</span><span class='hs-conid'>Name</span><span class='hs-layout'>,</span> <span class='hs-conid'>ItblPtr</span><span class='hs-layout'>)</span>
<a name="line-12"></a> <span class='hs-comment'>-- We need the Name in the range so we know which</span>
<a name="line-13"></a> <span class='hs-comment'>-- elements to filter out when unloading a module</span>
<a name="line-14"></a>
<a name="line-15"></a><a name="mkItblEnv"></a><span class='hs-definition'>mkItblEnv</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Name</span><span class='hs-layout'>,</span><span class='hs-conid'>ItblPtr</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ItblEnv</span>
<a name="line-16"></a><span class='hs-definition'>mkItblEnv</span> <span class='hs-varid'>pairs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkNameEnv</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-layout'>,</span><span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-layout'>,</span><span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pairs</span><span class='hs-keyglyph'>]</span>
<a name="line-17"></a>
<a name="line-18"></a>
<a name="line-19"></a><a name="mkITbls"></a><span class='hs-comment'>-- Make info tables for the data decls in this module</span>
<a name="line-20"></a><span class='hs-definition'>mkITbls</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>TyCon</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ItblEnv</span>
<a name="line-21"></a><span class='hs-definition'>mkITbls</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>emptyNameEnv</span>
<a name="line-22"></a><span class='hs-definition'>mkITbls</span> <span class='hs-layout'>(</span><span class='hs-varid'>tc</span><span class='hs-conop'>:</span><span class='hs-varid'>tcs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>itbls</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mkITbl</span> <span class='hs-varid'>tc</span>
<a name="line-23"></a> <span class='hs-varid'>itbls2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mkITbls</span> <span class='hs-varid'>tcs</span>
<a name="line-24"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>itbls</span> <span class='hs-varop'>`plusNameEnv`</span> <span class='hs-varid'>itbls2</span><span class='hs-layout'>)</span>
<a name="line-25"></a>
<a name="line-26"></a><a name="mkITbl"></a><span class='hs-definition'>mkITbl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TyCon</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ItblEnv</span>
<a name="line-27"></a><span class='hs-definition'>mkITbl</span> <span class='hs-varid'>tc</span>
<a name="line-28"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>isDataTyCon</span> <span class='hs-varid'>tc</span><span class='hs-layout'>)</span>
<a name="line-29"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>emptyNameEnv</span>
<a name="line-30"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>dcs</span> <span class='hs-varop'>`lengthIs`</span> <span class='hs-varid'>n</span> <span class='hs-comment'>-- paranoia; this is an assertion.</span>
<a name="line-31"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>make_constr_itbls</span> <span class='hs-varid'>dcs</span>
<a name="line-32"></a> <span class='hs-keyword'>where</span>
<a name="line-33"></a> <span class='hs-varid'>dcs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tyConDataCons</span> <span class='hs-varid'>tc</span>
<a name="line-34"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tyConFamilySize</span> <span class='hs-varid'>tc</span>
<a name="line-35"></a>
<a name="line-36"></a><span class='hs-cpp'>#include "../includes/rts/storage/ClosureTypes.h"</span>
<a name="line-37"></a><a name="cONSTR"></a><span class='hs-definition'>cONSTR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Defined in ClosureTypes.h</span>
<a name="line-38"></a><span class='hs-definition'>cONSTR</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CONSTR</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="make_constr_itbls"></a><span class='hs-comment'>-- Assumes constructors are numbered from zero, not one</span>
<a name="line-41"></a><span class='hs-definition'>make_constr_itbls</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DataCon</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ItblEnv</span>
<a name="line-42"></a><span class='hs-definition'>make_constr_itbls</span> <span class='hs-varid'>cons</span>
<a name="line-43"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>is</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>mk_dirret_itbl</span> <span class='hs-layout'>(</span><span class='hs-varid'>zip</span> <span class='hs-varid'>cons</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-keyglyph'>..</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-44"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkItblEnv</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span>
<a name="line-45"></a> <span class='hs-keyword'>where</span>
<a name="line-46"></a> <span class='hs-varid'>mk_dirret_itbl</span> <span class='hs-layout'>(</span><span class='hs-varid'>dcon</span><span class='hs-layout'>,</span> <span class='hs-varid'>conNo</span><span class='hs-layout'>)</span>
<a name="line-47"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mk_itbl</span> <span class='hs-varid'>dcon</span> <span class='hs-varid'>conNo</span> <span class='hs-varid'>stg_interp_constr_entry</span>
<a name="line-48"></a>
<a name="line-49"></a> <span class='hs-varid'>mk_itbl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DataCon</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Name</span><span class='hs-layout'>,</span><span class='hs-conid'>ItblPtr</span><span class='hs-layout'>)</span>
<a name="line-50"></a> <span class='hs-varid'>mk_itbl</span> <span class='hs-varid'>dcon</span> <span class='hs-varid'>conNo</span> <span class='hs-varid'>entry_addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-51"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>rep_args</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeCgRep</span> <span class='hs-varid'>arg</span><span class='hs-layout'>,</span><span class='hs-varid'>arg</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>arg</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>dataConRepArgTys</span> <span class='hs-varid'>dcon</span> <span class='hs-keyglyph'>]</span>
<a name="line-52"></a> <span class='hs-layout'>(</span><span class='hs-varid'>tot_wds</span><span class='hs-layout'>,</span> <span class='hs-varid'>ptr_wds</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkVirtHeapOffsets</span> <span class='hs-conid'>False</span><span class='hs-comment'>{-not a THUNK-}</span> <span class='hs-varid'>rep_args</span>
<a name="line-53"></a>
<a name="line-54"></a> <span class='hs-varid'>ptrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ptr_wds</span>
<a name="line-55"></a> <span class='hs-varid'>nptrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tot_wds</span> <span class='hs-comment'>-</span> <span class='hs-varid'>ptr_wds</span>
<a name="line-56"></a> <span class='hs-varid'>nptrs_really</span>
<a name="line-57"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>ptrs</span> <span class='hs-varop'>+</span> <span class='hs-varid'>nptrs</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>mIN_PAYLOAD_SIZE</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nptrs</span>
<a name="line-58"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mIN_PAYLOAD_SIZE</span> <span class='hs-comment'>-</span> <span class='hs-varid'>ptrs</span>
<a name="line-59"></a> <span class='hs-varid'>code</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkJumpToAddr</span> <span class='hs-varid'>entry_addr</span>
<a name="line-60"></a> <span class='hs-varid'>itbl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StgInfoTable</span> <span class='hs-layout'>{</span>
<a name="line-61"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-62"></a> <span class='hs-varid'>entry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>entry_addr</span><span class='hs-layout'>,</span>
<a name="line-63"></a><span class='hs-cpp'>#endif</span>
<a name="line-64"></a> <span class='hs-varid'>ptrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>ptrs</span><span class='hs-layout'>,</span>
<a name="line-65"></a> <span class='hs-varid'>nptrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nptrs_really</span><span class='hs-layout'>,</span>
<a name="line-66"></a> <span class='hs-varid'>tipe</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>cONSTR</span><span class='hs-layout'>,</span>
<a name="line-67"></a> <span class='hs-varid'>srtlen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>conNo</span>
<a name="line-68"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-69"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>code</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>code</span>
<a name="line-70"></a><span class='hs-cpp'>#endif</span>
<a name="line-71"></a> <span class='hs-layout'>}</span>
<a name="line-72"></a> <span class='hs-varid'>qNameCString</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newArray0</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-varid'>dataConIdentity</span> <span class='hs-varid'>dcon</span>
<a name="line-73"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>conInfoTbl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StgConInfoTable</span> <span class='hs-layout'>{</span>
<a name="line-74"></a> <span class='hs-varid'>conDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>qNameCString</span><span class='hs-layout'>,</span>
<a name="line-75"></a> <span class='hs-varid'>infoTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>itbl</span>
<a name="line-76"></a> <span class='hs-layout'>}</span>
<a name="line-77"></a> <span class='hs-comment'>-- Make a piece of code to jump to "entry_label".</span>
<a name="line-78"></a> <span class='hs-comment'>-- This is the only arch-dependent bit.</span>
<a name="line-79"></a> <span class='hs-varid'>addrCon</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newExec</span> <span class='hs-varid'>pokeConItbl</span> <span class='hs-varid'>conInfoTbl</span>
<a name="line-80"></a> <span class='hs-comment'>--putStrLn ("SIZE of itbl is " ++ show (sizeOf itbl))</span>
<a name="line-81"></a> <span class='hs-comment'>--putStrLn ("# ptrs of itbl is " ++ show ptrs)</span>
<a name="line-82"></a> <span class='hs-comment'>--putStrLn ("# nptrs of itbl is " ++ show nptrs_really)</span>
<a name="line-83"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>getName</span> <span class='hs-varid'>dcon</span><span class='hs-layout'>,</span> <span class='hs-conid'>ItblPtr</span> <span class='hs-layout'>(</span><span class='hs-varid'>castFunPtrToPtr</span> <span class='hs-varid'>addrCon</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-84"></a>
<a name="line-85"></a>
<a name="line-86"></a><span class='hs-comment'>-- Make code which causes a jump to the given address. This is the</span>
<a name="line-87"></a><span class='hs-comment'>-- only arch-dependent bit of the itbl story. The returned list is</span>
<a name="line-88"></a><span class='hs-comment'>-- itblCodeLength elements (bytes) long.</span>
<a name="line-89"></a>
<a name="line-90"></a><span class='hs-comment'>-- For sparc_TARGET_ARCH, i386_TARGET_ARCH, etc.</span>
<a name="line-91"></a><span class='hs-cpp'>#include "nativeGen/NCG.h"</span>
<a name="line-92"></a>
<a name="line-93"></a><a name="itblCodeLength"></a><span class='hs-definition'>itblCodeLength</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-94"></a><span class='hs-definition'>itblCodeLength</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkJumpToAddr</span> <span class='hs-varid'>undefined</span><span class='hs-layout'>)</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="mkJumpToAddr"></a><span class='hs-definition'>mkJumpToAddr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ItblCode</span><span class='hs-keyglyph'>]</span>
<a name="line-97"></a>
<a name="line-98"></a><a name="ptrToInt"></a><span class='hs-definition'>ptrToInt</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>addr2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>a</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-99"></a>
<a name="line-100"></a><span class='hs-cpp'>#if sparc_TARGET_ARCH</span>
<a name="line-101"></a><span class='hs-comment'>-- After some consideration, we'll try this, where</span>
<a name="line-102"></a><span class='hs-comment'>-- 0x55555555 stands in for the address to jump to.</span>
<a name="line-103"></a><span class='hs-comment'>-- According to includes/rts/MachRegs.h, %g3 is very</span>
<a name="line-104"></a><span class='hs-comment'>-- likely indeed to be baggable.</span>
<a name="line-105"></a><span class='hs-comment'>--</span>
<a name="line-106"></a><span class='hs-comment'>-- 0000 07155555 sethi %hi(0x55555555), %g3</span>
<a name="line-107"></a><span class='hs-comment'>-- 0004 8610E155 or %g3, %lo(0x55555555), %g3</span>
<a name="line-108"></a><span class='hs-comment'>-- 0008 81C0C000 jmp %g3</span>
<a name="line-109"></a><span class='hs-comment'>-- 000c 01000000 nop</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="ItblCode"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ItblCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word32</span>
<a name="line-112"></a><span class='hs-definition'>mkJumpToAddr</span> <span class='hs-varid'>a</span>
<a name="line-113"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>w32</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptrToInt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-114"></a>
<a name="line-115"></a> <span class='hs-varid'>hi22</span><span class='hs-layout'>,</span> <span class='hs-varid'>lo10</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word32</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word32</span>
<a name="line-116"></a> <span class='hs-varid'>lo10</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3FF</span>
<a name="line-117"></a> <span class='hs-varid'>hi22</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>10</span><span class='hs-layout'>)</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3FFFF</span>
<a name="line-118"></a>
<a name="line-119"></a> <span class='hs-keyword'>in</span> <span class='hs-keyglyph'>[</span> <span class='hs-num'>0x07000000</span> <span class='hs-varop'>.|.</span> <span class='hs-layout'>(</span><span class='hs-varid'>hi22</span> <span class='hs-varid'>w32</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-120"></a> <span class='hs-num'>0x8610E000</span> <span class='hs-varop'>.|.</span> <span class='hs-layout'>(</span><span class='hs-varid'>lo10</span> <span class='hs-varid'>w32</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-121"></a> <span class='hs-num'>0x81C0C000</span><span class='hs-layout'>,</span>
<a name="line-122"></a> <span class='hs-num'>0x01000000</span> <span class='hs-keyglyph'>]</span>
<a name="line-123"></a>
<a name="line-124"></a><span class='hs-cpp'>#elif powerpc_TARGET_ARCH</span>
<a name="line-125"></a><span class='hs-comment'>-- We'll use r12, for no particular reason.</span>
<a name="line-126"></a><span class='hs-comment'>-- 0xDEADBEEF stands for the adress:</span>
<a name="line-127"></a><span class='hs-comment'>-- 3D80DEAD lis r12,0xDEAD</span>
<a name="line-128"></a><span class='hs-comment'>-- 618CBEEF ori r12,r12,0xBEEF</span>
<a name="line-129"></a><span class='hs-comment'>-- 7D8903A6 mtctr r12</span>
<a name="line-130"></a><span class='hs-comment'>-- 4E800420 bctr</span>
<a name="line-131"></a>
<a name="line-132"></a><a name="ItblCode"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ItblCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word32</span>
<a name="line-133"></a><span class='hs-definition'>mkJumpToAddr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span>
<a name="line-134"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>w32</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptrToInt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-135"></a> <span class='hs-varid'>hi16</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0xFFFF</span>
<a name="line-136"></a> <span class='hs-varid'>lo16</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0xFFFF</span>
<a name="line-137"></a> <span class='hs-keyword'>in</span> <span class='hs-keyglyph'>[</span>
<a name="line-138"></a> <span class='hs-num'>0x3D800000</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>hi16</span> <span class='hs-varid'>w32</span><span class='hs-layout'>,</span>
<a name="line-139"></a> <span class='hs-num'>0x618C0000</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>lo16</span> <span class='hs-varid'>w32</span><span class='hs-layout'>,</span>
<a name="line-140"></a> <span class='hs-num'>0x7D8903A6</span><span class='hs-layout'>,</span> <span class='hs-num'>0x4E800420</span>
<a name="line-141"></a> <span class='hs-keyglyph'>]</span>
<a name="line-142"></a>
<a name="line-143"></a><span class='hs-cpp'>#elif i386_TARGET_ARCH</span>
<a name="line-144"></a><span class='hs-comment'>-- Let the address to jump to be 0xWWXXYYZZ.</span>
<a name="line-145"></a><span class='hs-comment'>-- Generate movl $0xWWXXYYZZ,%eax ; jmp *%eax</span>
<a name="line-146"></a><span class='hs-comment'>-- which is</span>
<a name="line-147"></a><span class='hs-comment'>-- B8 ZZ YY XX WW FF E0</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="ItblCode"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ItblCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word8</span>
<a name="line-150"></a><span class='hs-definition'>mkJumpToAddr</span> <span class='hs-varid'>a</span>
<a name="line-151"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>w32</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptrToInt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word32</span>
<a name="line-152"></a> <span class='hs-varid'>insnBytes</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Word8</span><span class='hs-keyglyph'>]</span>
<a name="line-153"></a> <span class='hs-varid'>insnBytes</span>
<a name="line-154"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0xB8</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte0</span> <span class='hs-varid'>w32</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte1</span> <span class='hs-varid'>w32</span><span class='hs-layout'>,</span>
<a name="line-155"></a> <span class='hs-varid'>byte2</span> <span class='hs-varid'>w32</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte3</span> <span class='hs-varid'>w32</span><span class='hs-layout'>,</span>
<a name="line-156"></a> <span class='hs-num'>0xFF</span><span class='hs-layout'>,</span> <span class='hs-num'>0xE0</span><span class='hs-keyglyph'>]</span>
<a name="line-157"></a> <span class='hs-keyword'>in</span>
<a name="line-158"></a> <span class='hs-varid'>insnBytes</span>
<a name="line-159"></a>
<a name="line-160"></a><span class='hs-cpp'>#elif x86_64_TARGET_ARCH</span>
<a name="line-161"></a><span class='hs-comment'>-- Generates:</span>
<a name="line-162"></a><span class='hs-comment'>-- jmpq *.L1(%rip)</span>
<a name="line-163"></a><span class='hs-comment'>-- .align 8</span>
<a name="line-164"></a><span class='hs-comment'>-- .L1: </span>
<a name="line-165"></a><span class='hs-comment'>-- .quad <addr></span>
<a name="line-166"></a><span class='hs-comment'>--</span>
<a name="line-167"></a><span class='hs-comment'>-- We need a full 64-bit pointer (we can't assume the info table is</span>
<a name="line-168"></a><span class='hs-comment'>-- allocated in low memory). Assuming the info pointer is aligned to</span>
<a name="line-169"></a><span class='hs-comment'>-- an 8-byte boundary, the addr will also be aligned.</span>
<a name="line-170"></a>
<a name="line-171"></a><a name="ItblCode"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ItblCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word8</span>
<a name="line-172"></a><span class='hs-definition'>mkJumpToAddr</span> <span class='hs-varid'>a</span>
<a name="line-173"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>w64</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptrToInt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word64</span>
<a name="line-174"></a> <span class='hs-varid'>insnBytes</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Word8</span><span class='hs-keyglyph'>]</span>
<a name="line-175"></a> <span class='hs-varid'>insnBytes</span>
<a name="line-176"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0xff</span><span class='hs-layout'>,</span> <span class='hs-num'>0x25</span><span class='hs-layout'>,</span> <span class='hs-num'>0x02</span><span class='hs-layout'>,</span> <span class='hs-num'>0x00</span><span class='hs-layout'>,</span> <span class='hs-num'>0x00</span><span class='hs-layout'>,</span> <span class='hs-num'>0x00</span><span class='hs-layout'>,</span> <span class='hs-num'>0x00</span><span class='hs-layout'>,</span> <span class='hs-num'>0x00</span><span class='hs-layout'>,</span>
<a name="line-177"></a> <span class='hs-varid'>byte0</span> <span class='hs-varid'>w64</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte1</span> <span class='hs-varid'>w64</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte2</span> <span class='hs-varid'>w64</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte3</span> <span class='hs-varid'>w64</span><span class='hs-layout'>,</span>
<a name="line-178"></a> <span class='hs-varid'>byte4</span> <span class='hs-varid'>w64</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte5</span> <span class='hs-varid'>w64</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte6</span> <span class='hs-varid'>w64</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte7</span> <span class='hs-varid'>w64</span><span class='hs-keyglyph'>]</span>
<a name="line-179"></a> <span class='hs-keyword'>in</span>
<a name="line-180"></a> <span class='hs-varid'>insnBytes</span>
<a name="line-181"></a>
<a name="line-182"></a><span class='hs-cpp'>#elif alpha_TARGET_ARCH</span>
<a name="line-183"></a><a name="ItblCode"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ItblCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word32</span>
<a name="line-184"></a><span class='hs-definition'>mkJumpToAddr</span> <span class='hs-varid'>a</span>
<a name="line-185"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-num'>0xc3800000</span> <span class='hs-comment'>-- br at, .+4</span>
<a name="line-186"></a> <span class='hs-layout'>,</span> <span class='hs-num'>0xa79c000c</span> <span class='hs-comment'>-- ldq at, 12(at)</span>
<a name="line-187"></a> <span class='hs-layout'>,</span> <span class='hs-num'>0x6bfc0000</span> <span class='hs-comment'>-- jmp (at) # with zero hint -- oh well</span>
<a name="line-188"></a> <span class='hs-layout'>,</span> <span class='hs-num'>0x47ff041f</span> <span class='hs-comment'>-- nop</span>
<a name="line-189"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w64</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x0000FFFF</span><span class='hs-layout'>)</span>
<a name="line-190"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>w64</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>32</span><span class='hs-layout'>)</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x0000FFFF</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-191"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>w64</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptrToInt</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word64</span>
<a name="line-192"></a>
<a name="line-193"></a><span class='hs-cpp'>#else</span>
<a name="line-194"></a><a name="ItblCode"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ItblCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word32</span>
<a name="line-195"></a><span class='hs-definition'>mkJumpToAddr</span> <span class='hs-varid'>a</span>
<a name="line-196"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-197"></a><span class='hs-cpp'>#endif</span>
<a name="line-198"></a>
<a name="line-199"></a>
<a name="line-200"></a><a name="byte0"></a><span class='hs-definition'>byte0</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte1</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte2</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte3</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte4</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte5</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte6</span><span class='hs-layout'>,</span> <span class='hs-varid'>byte7</span>
<a name="line-201"></a> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Integral</span> <span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bits</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span>
<a name="line-202"></a><span class='hs-definition'>byte0</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>w</span>
<a name="line-203"></a><a name="byte1"></a><span class='hs-definition'>byte1</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span>
<a name="line-204"></a><a name="byte2"></a><span class='hs-definition'>byte2</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span>
<a name="line-205"></a><a name="byte3"></a><span class='hs-definition'>byte3</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>24</span><span class='hs-layout'>)</span>
<a name="line-206"></a><a name="byte4"></a><span class='hs-definition'>byte4</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>32</span><span class='hs-layout'>)</span>
<a name="line-207"></a><a name="byte5"></a><span class='hs-definition'>byte5</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>40</span><span class='hs-layout'>)</span>
<a name="line-208"></a><a name="byte6"></a><span class='hs-definition'>byte6</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>48</span><span class='hs-layout'>)</span>
<a name="line-209"></a><a name="byte7"></a><span class='hs-definition'>byte7</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>56</span><span class='hs-layout'>)</span>
<a name="line-210"></a>
<a name="line-211"></a>
<a name="line-212"></a><span class='hs-cpp'>#ifndef __HADDOCK__</span>
<a name="line-213"></a><span class='hs-comment'>-- entry point for direct returns for created constr itbls</span>
<a name="line-214"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-str'>"&stg_interp_constr_entry"</span> <span class='hs-varid'>stg_interp_constr_entry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span>
<a name="line-215"></a><span class='hs-cpp'>#endif</span>
<a name="line-216"></a>
<a name="line-217"></a>
<a name="line-218"></a>
<a name="line-219"></a>
<a name="line-220"></a><span class='hs-comment'>-- Ultra-minimalist version specially for constructors</span>
<a name="line-221"></a><span class='hs-cpp'>#if SIZEOF_VOID_P == 8</span>
<a name="line-222"></a><a name="HalfWord"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>HalfWord</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word32</span>
<a name="line-223"></a><span class='hs-cpp'>#else</span>
<a name="line-224"></a><a name="HalfWord"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>HalfWord</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word16</span>
<a name="line-225"></a><span class='hs-cpp'>#endif</span>
<a name="line-226"></a>
<a name="line-227"></a><a name="StgConInfoTable"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>StgConInfoTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StgConInfoTable</span> <span class='hs-layout'>{</span>
<a name="line-228"></a> <span class='hs-varid'>conDesc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>,</span>
<a name="line-229"></a> <span class='hs-varid'>infoTable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>StgInfoTable</span>
<a name="line-230"></a><span class='hs-layout'>}</span>
<a name="line-231"></a>
<a name="line-232"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-conid'>StgConInfoTable</span> <span class='hs-keyword'>where</span>
<a name="line-233"></a> <span class='hs-varid'>sizeOf</span> <span class='hs-varid'>conInfoTable</span>
<a name="line-234"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sum</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>sizeOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>conDesc</span> <span class='hs-varid'>conInfoTable</span><span class='hs-layout'>)</span>
<a name="line-235"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sizeOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>infoTable</span> <span class='hs-varid'>conInfoTable</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-236"></a> <span class='hs-varid'>alignment</span> <span class='hs-varid'>conInfoTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SIZEOF_VOID_P</span>
<a name="line-237"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>ptr</span>
<a name="line-238"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runState</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>ptr</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-239"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-240"></a> <span class='hs-varid'>desc</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-241"></a><span class='hs-cpp'>#endif</span>
<a name="line-242"></a> <span class='hs-varid'>itbl</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-243"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-244"></a> <span class='hs-varid'>desc</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-245"></a><span class='hs-cpp'>#endif</span>
<a name="line-246"></a> <span class='hs-varid'>return</span>
<a name="line-247"></a> <span class='hs-conid'>StgConInfoTable</span>
<a name="line-248"></a> <span class='hs-layout'>{</span>
<a name="line-249"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-250"></a> <span class='hs-varid'>conDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>castPtr</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>conInfoTableSizeB</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>desc</span>
<a name="line-251"></a><span class='hs-cpp'>#else</span>
<a name="line-252"></a> <span class='hs-varid'>conDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>desc</span>
<a name="line-253"></a><span class='hs-cpp'>#endif</span>
<a name="line-254"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>infoTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>itbl</span>
<a name="line-255"></a> <span class='hs-layout'>}</span>
<a name="line-256"></a> <span class='hs-varid'>poke</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"poke(StgConInfoTable): use pokeConItbl instead"</span>
<a name="line-257"></a>
<a name="line-258"></a>
<a name="line-259"></a><a name="pokeConItbl"></a><span class='hs-definition'>pokeConItbl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>StgConInfoTable</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>StgConInfoTable</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>StgConInfoTable</span>
<a name="line-260"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-261"></a><span class='hs-definition'>pokeConItbl</span> <span class='hs-varid'>wr_ptr</span> <span class='hs-varid'>ex_ptr</span> <span class='hs-varid'>itbl</span>
<a name="line-262"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runState</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>wr_ptr</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-263"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-264"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>conDesc</span> <span class='hs-varid'>itbl</span> <span class='hs-varop'>`minusPtr`</span> <span class='hs-layout'>(</span><span class='hs-varid'>ex_ptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>conInfoTableSizeB</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-265"></a><span class='hs-cpp'>#endif</span>
<a name="line-266"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>infoTable</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span>
<a name="line-267"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-268"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>conDesc</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span>
<a name="line-269"></a><span class='hs-cpp'>#endif</span>
<a name="line-270"></a>
<a name="line-271"></a><a name="StgInfoTable"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>StgInfoTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StgInfoTable</span> <span class='hs-layout'>{</span>
<a name="line-272"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-273"></a> <span class='hs-varid'>entry</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span>
<a name="line-274"></a><span class='hs-cpp'>#endif</span>
<a name="line-275"></a> <span class='hs-varid'>ptrs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HalfWord</span><span class='hs-layout'>,</span>
<a name="line-276"></a> <span class='hs-varid'>nptrs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HalfWord</span><span class='hs-layout'>,</span>
<a name="line-277"></a> <span class='hs-varid'>tipe</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HalfWord</span><span class='hs-layout'>,</span>
<a name="line-278"></a> <span class='hs-varid'>srtlen</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HalfWord</span>
<a name="line-279"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-280"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>code</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ItblCode</span><span class='hs-keyglyph'>]</span>
<a name="line-281"></a><span class='hs-cpp'>#endif</span>
<a name="line-282"></a> <span class='hs-layout'>}</span>
<a name="line-283"></a>
<a name="line-284"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-conid'>StgInfoTable</span> <span class='hs-keyword'>where</span>
<a name="line-285"></a>
<a name="line-286"></a> <span class='hs-varid'>sizeOf</span> <span class='hs-varid'>itbl</span>
<a name="line-287"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sum</span>
<a name="line-288"></a> <span class='hs-keyglyph'>[</span>
<a name="line-289"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-290"></a> <span class='hs-varid'>fieldSz</span> <span class='hs-varid'>entry</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>,</span>
<a name="line-291"></a><span class='hs-cpp'>#endif</span>
<a name="line-292"></a> <span class='hs-varid'>fieldSz</span> <span class='hs-varid'>ptrs</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>,</span>
<a name="line-293"></a> <span class='hs-varid'>fieldSz</span> <span class='hs-varid'>nptrs</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>,</span>
<a name="line-294"></a> <span class='hs-varid'>fieldSz</span> <span class='hs-varid'>tipe</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>,</span>
<a name="line-295"></a> <span class='hs-varid'>fieldSz</span> <span class='hs-varid'>srtlen</span> <span class='hs-varid'>itbl</span>
<a name="line-296"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-297"></a> <span class='hs-layout'>,</span><span class='hs-varid'>fieldSz</span> <span class='hs-layout'>(</span><span class='hs-varid'>head</span><span class='hs-varop'>.</span><span class='hs-varid'>code</span><span class='hs-layout'>)</span> <span class='hs-varid'>itbl</span> <span class='hs-varop'>*</span> <span class='hs-varid'>itblCodeLength</span>
<a name="line-298"></a><span class='hs-cpp'>#endif</span>
<a name="line-299"></a> <span class='hs-keyglyph'>]</span>
<a name="line-300"></a>
<a name="line-301"></a> <span class='hs-varid'>alignment</span> <span class='hs-varid'>itbl</span>
<a name="line-302"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SIZEOF_VOID_P</span>
<a name="line-303"></a>
<a name="line-304"></a> <span class='hs-varid'>poke</span> <span class='hs-varid'>a0</span> <span class='hs-varid'>itbl</span>
<a name="line-305"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runState</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>a0</span><span class='hs-layout'>)</span>
<a name="line-306"></a> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-307"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-308"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>entry</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span>
<a name="line-309"></a><span class='hs-cpp'>#endif</span>
<a name="line-310"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptrs</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span>
<a name="line-311"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>nptrs</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span>
<a name="line-312"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>tipe</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span>
<a name="line-313"></a> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>srtlen</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span>
<a name="line-314"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-315"></a> <span class='hs-varid'>sequence_</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>store</span> <span class='hs-layout'>(</span><span class='hs-varid'>code</span> <span class='hs-varid'>itbl</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-316"></a><span class='hs-cpp'>#endif</span>
<a name="line-317"></a>
<a name="line-318"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>a0</span>
<a name="line-319"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runState</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>a0</span><span class='hs-layout'>)</span>
<a name="line-320"></a> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-321"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-322"></a> <span class='hs-varid'>entry</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-323"></a><span class='hs-cpp'>#endif</span>
<a name="line-324"></a> <span class='hs-varid'>ptrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-325"></a> <span class='hs-varid'>nptrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-326"></a> <span class='hs-varid'>tipe</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-327"></a> <span class='hs-varid'>srtlen</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>load</span>
<a name="line-328"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-329"></a> <span class='hs-varid'>code</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sequence</span> <span class='hs-layout'>(</span><span class='hs-varid'>replicate</span> <span class='hs-varid'>itblCodeLength</span> <span class='hs-varid'>load</span><span class='hs-layout'>)</span>
<a name="line-330"></a><span class='hs-cpp'>#endif</span>
<a name="line-331"></a> <span class='hs-varid'>return</span>
<a name="line-332"></a> <span class='hs-conid'>StgInfoTable</span> <span class='hs-layout'>{</span>
<a name="line-333"></a><span class='hs-cpp'>#ifndef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-334"></a> <span class='hs-varid'>entry</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>entry</span><span class='hs-layout'>,</span>
<a name="line-335"></a><span class='hs-cpp'>#endif</span>
<a name="line-336"></a> <span class='hs-varid'>ptrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ptrs</span><span class='hs-layout'>,</span>
<a name="line-337"></a> <span class='hs-varid'>nptrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nptrs</span><span class='hs-layout'>,</span>
<a name="line-338"></a> <span class='hs-varid'>tipe</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tipe</span><span class='hs-layout'>,</span>
<a name="line-339"></a> <span class='hs-varid'>srtlen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>srtlen</span>
<a name="line-340"></a><span class='hs-cpp'>#ifdef GHCI_TABLES_NEXT_TO_CODE</span>
<a name="line-341"></a> <span class='hs-layout'>,</span><span class='hs-varid'>code</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>code</span>
<a name="line-342"></a><span class='hs-cpp'>#endif</span>
<a name="line-343"></a> <span class='hs-layout'>}</span>
<a name="line-344"></a>
<a name="line-345"></a><a name="fieldSz"></a><span class='hs-definition'>fieldSz</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-346"></a><span class='hs-definition'>fieldSz</span> <span class='hs-varid'>sel</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sizeOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>sel</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-347"></a>
<a name="line-348"></a><a name="State"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>State</span> <span class='hs-varid'>s</span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-349"></a>
<a name="line-350"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-conid'>State</span> <span class='hs-varid'>s</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-351"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-352"></a> <span class='hs-conid'>State</span> <span class='hs-varid'>m</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>s</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>s'</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span> <span class='hs-conid'>State</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>n</span> <span class='hs-varid'>s'</span><span class='hs-layout'>)</span>
<a name="line-353"></a> <span class='hs-varid'>fail</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-varid'>str</span><span class='hs-layout'>)</span>
<a name="line-354"></a>
<a name="line-355"></a><a name="MonadT"></a><span class='hs-keyword'>class</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>MonadT</span> <span class='hs-varid'>t</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-356"></a> <span class='hs-varid'>lift</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span>
<a name="line-357"></a>
<a name="line-358"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>MonadT</span> <span class='hs-layout'>(</span><span class='hs-conid'>State</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-359"></a> <span class='hs-varid'>lift</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-360"></a>
<a name="line-361"></a><a name="runState"></a><span class='hs-definition'>runState</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>State</span> <span class='hs-varid'>s</span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span>
<a name="line-362"></a><span class='hs-definition'>runState</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>State</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-varid'>s</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span>
<a name="line-363"></a>
<a name="line-364"></a><a name="PtrIO"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>PtrIO</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span> <span class='hs-conid'>IO</span>
<a name="line-365"></a>
<a name="line-366"></a><a name="advance"></a><span class='hs-definition'>advance</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PtrIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-367"></a><span class='hs-definition'>advance</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-varid'>adv</span> <span class='hs-keyword'>where</span>
<a name="line-368"></a> <span class='hs-varid'>adv</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>castPtr</span> <span class='hs-varid'>addr</span> <span class='hs-keyword'>of</span> <span class='hs-layout'>{</span> <span class='hs-varid'>addrCast</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span>
<a name="line-369"></a> <span class='hs-layout'>(</span><span class='hs-varid'>addr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>sizeOfPointee</span> <span class='hs-varid'>addrCast</span><span class='hs-layout'>,</span> <span class='hs-varid'>addrCast</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-370"></a>
<a name="line-371"></a><a name="sizeOfPointee"></a><span class='hs-definition'>sizeOfPointee</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-372"></a><span class='hs-definition'>sizeOfPointee</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sizeOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeHack</span> <span class='hs-varid'>addr</span><span class='hs-layout'>)</span>
<a name="line-373"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>typeHack</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-374"></a>
<a name="line-375"></a><a name="store"></a><span class='hs-definition'>store</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PtrIO</span> <span class='hs-conid'>()</span>
<a name="line-376"></a><span class='hs-definition'>store</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>advance</span>
<a name="line-377"></a> <span class='hs-varid'>lift</span> <span class='hs-layout'>(</span><span class='hs-varid'>poke</span> <span class='hs-varid'>addr</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-378"></a>
<a name="line-379"></a><a name="load"></a><span class='hs-definition'>load</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PtrIO</span> <span class='hs-varid'>a</span>
<a name="line-380"></a><span class='hs-definition'>load</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>advance</span>
<a name="line-381"></a> <span class='hs-varid'>lift</span> <span class='hs-layout'>(</span><span class='hs-varid'>peek</span> <span class='hs-varid'>addr</span><span class='hs-layout'>)</span>
<a name="line-382"></a>
<a name="line-383"></a>
<a name="line-384"></a><a name="newExec"></a><span class='hs-definition'>newExec</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>FunPtr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-385"></a><span class='hs-definition'>newExec</span> <span class='hs-varid'>poke_fn</span> <span class='hs-varid'>obj</span>
<a name="line-386"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>pcode</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-387"></a> <span class='hs-varid'>wr_ptr</span> <span class='hs-keyglyph'><-</span> <span class='hs-sel'>_allocateExec</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>sizeOf</span> <span class='hs-varid'>obj</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>pcode</span>
<a name="line-388"></a> <span class='hs-varid'>ex_ptr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>pcode</span>
<a name="line-389"></a> <span class='hs-varid'>poke_fn</span> <span class='hs-varid'>wr_ptr</span> <span class='hs-varid'>ex_ptr</span> <span class='hs-varid'>obj</span>
<a name="line-390"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtrToFunPtr</span> <span class='hs-varid'>ex_ptr</span><span class='hs-layout'>)</span>
<a name="line-391"></a> <span class='hs-keyword'>where</span>
<a name="line-392"></a> <span class='hs-varid'>codeSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-393"></a> <span class='hs-varid'>codeSize</span> <span class='hs-varid'>dummy</span> <span class='hs-varid'>array</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sizeOf</span><span class='hs-layout'>(</span><span class='hs-varid'>dummy</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-varid'>length</span> <span class='hs-varid'>array</span>
<a name="line-394"></a>
<a name="line-395"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"allocateExec"</span>
<a name="line-396"></a> <span class='hs-sel'>_allocateExec</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
</pre>\end{code}
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