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Separate CVS parsing logic from tools/mksyscall.c; Create tools/mksymtab.c to create symbol tables from CSV files 

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5075 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-09-01 15:33:33 +00:00
parent 1d28db3742
commit 345e9ec8d7
2 changed files with 49 additions and 13 deletions
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1
Documentation/NuttXDemandPaging.html
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@ -8,7 +8,6 @@
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>On-Demand Paging</i></font></big></h1>
<h2><font color="#dc143c">&gt;&gt;&gt; Under Construction &lt;&lt;&lt;</font></h2>
<p>Last Updated: August 12, 2010</p>
</td>
</tr>

61
Documentation/NuttXNxFlat.html
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@ -9,8 +9,7 @@
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NXFLAT</i></font></big></h1>
<h2><font color="#dc143c">&gt;&gt;&gt; Under Construction &lt;&lt;&lt;</font></h2>
<p>Last Updated: June 29, 2012</p>
<p>Last Updated: September 1, 2012</p>
</td>
</tr>
</table>
@ -90,7 +89,13 @@
<tr>
<td><br></td>
<td>
<a href="#making">1.4 Making an NXFLAT module</a>
<a href="#mksymtab">1.4 mksymtab</a>
</td>
</tr>
<tr>
<td><br></td>
<td>
<a href="#making">1.5 Making an NXFLAT module</a>
</td>
</tr>
<tr>
@ -122,7 +127,7 @@
<a name="overview"><h1>1.0 Overview</h1></a>
</td>
</tr>
</table>f
</table>
<a name="functionality"><h2>1.1 Functionality</h2></a>
@ -386,7 +391,41 @@ any following arguments.
debug output is enabled [Default: no verbose output].
</pre></ul>
<a name="making"><h2>1.4 Making an NXFLAT module</h2></a>
<a name="mksymtab"><h2>1.4 mksymtab</h2></a>
<p>
There is a small helper program available in <code>nuttx/tools</code> call <code>mksymtab</code>.
<code>mksymtab</code> can be sued to generate symbol tables for the NuttX base code that would be usable by the typical NXFLAT application.
<code>mksymtab</code> builds symbol tables from common-separated value (CSV) files.
In particular, the CSV files:
</p>
<ol>
<li>
<code>nuttx/syscall/syscall.csv</code> that describes the NuttX RTOS interface, and
</li>
<li>
<code>nuttx/lib/lib/csv</code> that describes the NuttX C library interface.
</li>
</ol>
<ul><pre>
USAGE: ./mksymtab &lt;cvs-file&gt; &lt;symtab-file&gt;
Where:
&lt;cvs-file&gt; : The path to the input CSV file
&lt;symtab-file&gt;: The path to the output symbol table file
-d : Enable debug output
</pre></ul>
<p>
For example,
</p>
<ul><pre>
cd nuttx/tools
cat ../syscall/syscall.csv ../lib/lib.csv | sort >tmp.csv
./mksymtab.exe tmp.csv tmp.c
</pre></ul>
<a name="making"><h2>1.5 Making an NXFLAT module</h2></a>
<p>
Below is a snippet from an NXFLAT make file (simplified from NuttX
@ -639,8 +678,7 @@ any following arguments.
<p>
<ul><pre>
ldr r1, .L0 <-- Fetch the offset to 'x'
ldr r0, [r10, r1] <-- Load the value of 'x' with PIC
offset
ldr r0, [r10, r1] <-- Load the value of 'x' with PIC offset`
...
.L0: .word x <-- Offset to 'x'
</pre></ul>
@ -652,8 +690,7 @@ any following arguments.
<ul><pre>
ldr r1, .L0 <-- Fetch the offset to the GOT entry
ldr r1, [r10,r1] <-- Fetch the (relocated) address
of 'x' from the GOT
ldr r1, [r10,r1] <-- Fetch the (relocated) address of 'x' from the GOT
ldr r0, [r1, #0] <-- Fetch the value of 'x'
...
.L1 .word x(GOT) <-- Offset to entry in the GOT
@ -667,9 +704,9 @@ any following arguments.
execution time.
</p>
<p>
NXFLAT (like <a href="http://xflat.sourceforge.net/">XFLAT</a>) can work even better with
NXFLAT (like <a href="http://xflat.sourceforge.net/">XFLAT</a>) can work even better without
the GOT.
Patches again older version of GCC exist to eliminate the GOT indirections.
Patches against older version of GCC exist to eliminate the GOT indirections.
Several are available <a href="http://xflat.cvs.sourceforge.net/viewvc/xflat/xflat/gcc/">here</a>
if you are inspired to port them to a new GCC version.
</p>
@ -735,7 +772,7 @@ any following arguments.
<a href="http://xflat.cvs.sourceforge.net/viewvc/*checkout*/xflat/xflat/gcc/README?revision=1.1.1.1">XFLAT discussion</a>.
</p>
<p>
Patches again older version of GCC exist to correct this GCC behavior.
Patches against older version of GCC exist to correct this GCC behavior.
Several are available <a href="http://xflat.cvs.sourceforge.net/viewvc/xflat/xflat/gcc/">here</a>
if you are inspired to port them to a new GCC version.
</p>