Prepare for 0.9.10 release

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@751 42af7a65-404d-4744-a932-0658087f49c3

ChangeLog

@@ -290,4 +290,69 @@
 	* Fix deadlock errors when using stdio but with no buffering
 	* Add support for Pascal P-Code interpreter
 
-0.3.7 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
+0.3.6.1 2008-01-07 Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* The initial 0.3.6 release including an error that prevented
+	  building successfully if the Pascal add-on was
+	  was not present.
+
+0.3.7 2008-01-31 Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* Added support for the Zilog Z16F using the Zilog Z16F2800100ZCOG
+	  Development Kit.
+	* Add support toolchains that do not support making of dependencies
+	* Fix Cygwin build with spaces in directory names
+	* Name make system changes to deal with non-GNU toolchains (i.e., Zilog)
+	* Add support for Windows native toolchains that cannot follow Cygwin soft links
+	* Modified serial driver interface to handle hardware with non-16550A-like
+	  interrupt architecture (like the Z16F)
+	* Added a "dumb" serial console driver to simplify OS bringup
+	* Corrected a bug that caused the errno value of one task to be clobbered
+	  when a different task exits.  Effects all architectures.
+
+0.3.8 2008-02-10 Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* Added a test case to verify the Pascal P-Code interpreter
+	* Added /dev/zero
+	* 'errno' is now defined to be *get_errno_ptr() with no name conflicts
+	* Added lseek() and fseek()
+	* Integrated Pascal interpreter test case on the simulation platform.  Needs
+          pascal-0.1.1.
+	* Add Pascal test case on the z16f platform.  Needs pascal-0.1.2 (does not
+          yet work due to some tool issues).
+	* C buffered I/O fixes:
+	  - Fix fflush() return value,
+	  - Add correct fflush behavior when the FILE argument is null.
+	  - Add logic to a correctly handle read/write access on the same FILE
+	  - fseek() flushes read/write data when before moving the file pointer
+	  - When read data is flushed, reposition the file pointer to account for
+	    buffered, but unread data
+	* Pascal P-Code files are now standardized to big-endian for portability
+	* Fix a build problem with z80 and SDCC 2.7.0 (format of a map file changed)
+	  (see bug 1887170)
+	* Pascal P-Code runtime now compiles with the SDCC toolchain.
+	* Added a generic CAN driver.  This driver is untested as of this writing.
+	* Corrected DM320 UART configuration problem
+
+0.3.9 2008-03-09 Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* Began adding support for the ZiLOG Z8Encore! microcontroller for the Z8Encore000ZCO
+	  development board and the Z8F6403 part.
+	* Fix broken 'clean' target on z80sim configurations
+	* Re-structure arch/z80 to provide support for all ZiLOG 8-bit microcontrollers (ez8
+	  in particular for now).
+	* Add support for TRS80-Model 3 based on the xtrs emulation (http://www.tim-mann.org/xtrs.html)
+	  Per patch from Jacques Pelletier.
+	* In all shell scripts, change #!/bin/sh to #!/bin/bash to resolve problems in
+	  Ubuntu where /bin/sh is a link to dash.
+	* Z8Encore! port verified on ZDS-II instruction set/chip simulator.
+
+0.3.10 2008-05-15 Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* Add support for the ZiLOG EZ80Acclaim microcontrooler (EZ80F91 chip).
+	* Add configuration for the ZiLOG z8f64200100kit development kit, Z8F6423 part.
+	* Add configuration for the ZiLOG ez80f0910200kitg development kit, EZ80F091 part.
+	* Correct critical list handling errors in task shutdown logic: One in timer
+	  deletion logic (timer_delete.c) and one in stream logic (lib_init.c).
+
+0.3.11 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>

Documentation/NuttX.html

@@ -8,7 +8,7 @@
   <tr align="center" bgcolor="#e4e4e4">
     <td>
       <h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
-      <p>Last Updated: January 6, 2008</p>
+      <p>Last Updated: May 15, 2008</p>
     </td>
   </tr>
 </table>
@@ -27,39 +27,76 @@
 <table>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#overview">Overview</a></td>
+  <td>
+    <a href="#overview">Overview</a>.<br>
+    What is NuttX?
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#downloads">Downloads</a></td>
+  <td>
+    <a href="#downloads">Downloads</a>.<br>
+    Where can I get NuttX?  What is the current development status?
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#platforms">Supported Platforms</a></td>
+  <td>
+    <a href="#platforms">Supported Platforms</a>.<br>
+    What target platforms has NuttX been ported to?
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#footprint">Memory Footprint</a></td>
+  <td>
+    <a href="#environments">Development Environments</a>.<br>
+    What kinds of host cross-development platforms can be used with NuttX?
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#licensing">Licensing</a></td>
+  <td>
+    <a href="#footprint">Memory Footprint</a>.<br>
+    Just how big is it?  Do I have enough memory to use NuttX?
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#history">Release History</a></td>
+  <td>
+    <a href="#licensing">Licensing</a>.<br>
+    Are there any licensing restrictions for the use of NuttX? (Almost none)
+    Will there be problems if I link my proprietary code with NuttX? (No)
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#TODO">Bugs, Issues, <i>Things-To-Do</i></a></td>
+  <td>
+    <a href="#history">Release History</a><br>
+    What has changed in the last release of NuttX?
+    What unreleased changes are pending in CVS?
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#documentation">Other Documentation</a></td>
+  <td>
+    <a href="#TODO">Bugs, Issues, <i>Things-To-Do</i></a>.<br>
+    Software is never finished nor ever tested well enough.
+    (Do you want to help develop NuttX?  If so, send me an email).
+  </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
-  <td><a href="#trademarks">Trademarks</a></td>
+  <td>
+    <a href="#documentation">Other Documentation</a>.<br>
+    What other NuttX documentation is available?
+  </td>
+</tr>
+<tr>
+  <td><img src="favicon.ico"></td>
+  <td>
+    <a href="#trademarks">Trademarks</a>.<br>
+    Some of the words used in this document belong to other people.
+  </td>
 </tr>
 </table>
 </td>
@@ -146,7 +183,7 @@
       The primary governing standards are POSIX and ANSI standards.
       Additional standard APIs from Unix and other common RTOS's are
       adopted for functionality not available under these standards
-      or for functionaly that is not appropriate for the deeply-embedded
+      or for functionality that is not appropriate for the deeply-embedded
       RTOS (such as <code>fork()</code>).
     </p>
     <p>
@@ -419,46 +456,26 @@
 </table>
 
 <p>
-  The 18th release of NuttX (nuttx-0.3.6) is available for download
+  The 22nd release of NuttX (nuttx-0.3.11) is available for download
   from the <a href="http://sourceforge.net/project/showfiles.php?group_id=189573">SourceForge</a>
   website.
   The change log associated with the release is available <a href="#currentrelease">here</a>.
-  Unreleased changes after this release are avalable in CVS.
+  Unreleased changes after this release are available in CVS.
   These unreleased changes are listed <a href="#pendingchanges">here</a>.
 </p>
 <p>
-  NuttX 0.3.8 is the 7th release containing the integration of a network
-  subsystem and the uIP TCP/IP, UDP, and ICMP stacks based on
-  <a href="http://www.sics.se/~adam/uip/index.php/Main_Page">uIP</a>
-  into NuttX.
+  nuttx-0.3.10 is an important bug fix release.
+  This release incorporates fixes to correct critical list handling errors
+  in task shutdown logic: One in timer deletion logic (timer_delete.c) and one
+  in stream logic (lib_init.c).
 </p>
 <p>
-  This release contains on a few changes.
-  The primary purpose of this release is to synchronize with the release
-  of the pascal-0.1.0 add-on package.
-  This release of NuttX includes the following changes:
-</p>
-<ul>
-<li>Fixes for use with SDCC compiler, <li>
-<li>Added a simulated z80 target (arch/z80), <li>
-<li>Fix deadlock errors when using stdio but with no buffering, and</li>
-<li>Add support for the add-on Pascal P-Code interpreter (pcode/)
-  (see the pascal-0.1.0 package)</li>
-</ul>
-<p>
-  The Pascal add-on it integrated but has so far been tested very little;
-  it is certainly at an early, pre-alpha release leve.
-  The baseline functionality of NuttX (including recently added network)
-  functionality continues to mature and remains at post-beta or production level.
-  Extensive testing has been done for the ARM architecture using the GCC
-  compiler/toolchain.
-  Other architectures and the SDCC toolchain are also supported but not as
-  well exercised.
+  Additional, minor enhancements includes support to ZiLOG EZ80Acclaim
+  microcontrooler (EZ80F91 chip) and configurations fot the ZiLOG z8f64200100kit (Z8F6423)
+  and ez80f0910200kitg (EZ80F091) development kit.
 </p>
 <p>
-  The current release were verified only on the simulated Z80 and and host
-  simulation targets.  As usual, any feedback about bugs or suggestions
-  for improvement would be greatly appreciated.
+  As usual, any feedback about bugs or suggestions for improvement would be greatly appreciated.
 </p>
 
 <table width ="100%">
@@ -481,7 +498,7 @@
   <td>
     <p>
       A user-mode port of NuttX to the x86 Linux platform is available.
-      The purpose of this port is primarily to support OS feature developement.
+      The purpose of this port is primarily to support OS feature development.
     </p>
     <p>
       <b>STATUS:</b>
@@ -574,7 +591,77 @@
 <tr>
   <td valign="top"><img src="favicon.ico"></td>
   <td bgcolor="#5eaee1">
-    <b>Z80</b>
+    <b>Zilog Z16F</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      <b>Zilog z16f Microncontroller</b>.
+      This port use the Zilog z16f2800100zcog development kit and the Zilog
+      ZDS-II Windows command line tools.
+      The development environment is Cygwin under WinXP.
+    </p>
+    <p>
+      <b>STATUS:</b>
+      The initial release of support for the z16f was made available in NuttX version 0.3.7.
+    </p>
+   </td>
+</tr>
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Zilog eZ80Acclaim!</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      <b>Zilog eZ80Acclaim! Microncontroller</b>.
+      This port uses the ZiLOG ez80f0910200kitg development kit, eZ80F091 part
+      and the Zilog ZDS-II Windows command line tools.
+      The development environment is Cygwin under WinXP.
+    </p>
+    <p>
+      <b>STATUS:</b>
+      This is a work in progress.  Verified ez80 support will be announced in a future NuttX release.
+    </p>
+   </td>
+</tr>
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Zilog Z8Encore!</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      <b>Zilog Z8Encore! Microncontroller</b>.
+      This port uses the either:
+    </p>
+    <ul>
+      <li>Zilog z8encore000zco development kit, Z8F6403 part, or</li>
+      <li>Zilog z8f64200100kit development kit, Z8F6423 part</li>
+    </ul>
+    <p>
+      and the Zilog ZDS-II Windows command line tools.
+      The development environment is Cygwin under WinXP.
+    </p>
+    <p>
+      <b>STATUS:</b>
+      This release has been verified only on the ZiLOG ZDS-II Z8Encore! chip simulation
+      as of nuttx-0.3.9.
+    </p>
+   </td>
+</tr>
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Zilog Z80</b>
   </td>
 </tr>
 <tr>
@@ -583,14 +670,14 @@
     <p>
       <b>Z80 Instruction Set Simulator</b>.
       This port uses the <a href="http://sdcc.sourceforge.net/">SDCC</a> toolchain
-      under Linux or Cygwin (verfied using version 2.6.0).
+      under Linux or Cygwin (verified using version 2.6.0).
       This port has been verified using only a Z80 instruction simulator.
       That simulator can be found in the NuttX CVS
       <a href="http://nuttx.cvs.sourceforge.net/nuttx/misc/sims/z80sim/">here</a>.
     </p>
     <p>
      <b>STATUS:</b>
-      This port is complete and stable to the extent that it can be teste
+      This port is complete and stable to the extent that it can be tested
       using an instruction set simulator.
     </p>
    </td>
@@ -615,6 +702,160 @@
 is available that may be used to build a NuttX-compatible arm-elf toolchain under
 Linux or Cygwin.</blockquote>
 
+<table width ="100%">
+  <tr bgcolor="#e4e4e4">
+  <td>
+    <a name="environments"><h1>Development Environments</h1></a>
+  </td>
+  </tr>
+</table>
+
+<center><table width="90%">
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Linux + GNU make + GCC/binutils</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      The is the most natural development environment for NuttX.
+      Any version of the GCC/binutils toolchain may be used.
+      There is a  highly modified <a href="http://buildroot.uclibc.org/">buildroot</a>
+      available for download from the
+      <a href="http://sourceforge.net/project/showfiles.php?group_id=189573">NuttX SourceForge</a>
+      page.
+      This download may be used to build a NuttX-compatible arm-elf toolchain under Linux or Cygwin.
+      Additional support for m68k, m68hc11, and m68hc12 is available in the
+      <a href="http://nuttx.cvs.sourceforge.net/nuttx/misc/buildroot/">NuttX CVS</a>.
+    </p>
+   </td>
+</tr>
+
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Linux + GNU make + SDCC</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      Also very usable is the Linux environment using the 
+      <a href="http://sdcc.sourceforge.net/">SDCC</a> compiler.
+      The SDCC compiler provides support for the 8051/2, z80, hc08, and other microcontrollers.
+      The SDCC-based logic is less well exercised and you will likely find some compilation
+      issues if you use parts of NuttX with SDCC that have not been well-tested.
+    </p>
+   </td>
+</tr>
+
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Cygwin + GNU make + GCC/binutils</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      This combination works well too.
+      It works just as well as the native Linux environment except
+      that compilation and build times are a little longer.
+      The custom NuttX buildroot referenced above may be build in
+      the Cygwin environment as well.
+    </p>
+  </td>
+</tr>
+
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Cygwin + GNU make + SDCC</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+       I have never tried this combination, but it would probably work just fine.
+    </p>
+  </td>
+</tr>
+
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Cygwin + GNU make + Windows Native Toolchain</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      This is a tougher environment.
+      In this case, the Windows native toolchain is unaware of the the
+      Cygwin <i>sandbox</i> and, instead, operates in the native Windows environment.
+      The primary difficulties with this are:
+    </p>
+    <ul>
+      <li>
+        <b>Paths</b>.
+        Full paths for the native toolchain must follow Windows standards.
+        For example, the path <code>/home/my\ name/nuttx/include</code> my have to be
+        converted to something like <code>'C:\cygwin\home\my name\nuttx\include'</code>
+        to be usable by the toolchain.
+      </li>
+      <p>
+        Fortunately, this conversion is done simply using the <code>cygpath</code> utility.
+      </p>
+      <li>
+        <b>Symbolic Links</b>
+        NuttX depends on symbolic links to install platform-specific directories in the build system.
+        On Linux, true symbolic links are used.
+        On Cygwin, emulated symbolic links are used.
+        Unfortunately, for native Windows applications that operate outside of the
+        Cygwin <i>sandbox</i>, these symbolic links cannot be used.
+      </li>
+      <p>
+        The NuttX make system works around this limitation by copying the platform
+        specific directories in place.
+        These copied directories make work a little more complex, but otherwise work well.
+      </p>
+    </ul>
+    <p>
+      At present, on the Zilog Z16F port uses a native Windows toolchain
+      (the Zilog ZDS-II toolchain).
+    </p.
+  </td>
+</tr>
+
+<tr>
+  <td valign="top"><img src="favicon.ico"></td>
+  <td bgcolor="#5eaee1">
+    <b>Others Environments?</b>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      The primary environmental dependency of NuttX are (1) GNU make,
+      (2) bash scripting, and (3) Linux utilities (such as sed).
+      If you have other platforms that support GNU make or make
+      utilities that are compatible with GNU make, then it is very
+      likely that NuttX would work in that environment as well (with some
+      porting effort). If GNU make is not supported, then some significant
+      modification of the Make system would be required.
+    </p>
+  </td>
+</tr>
+</table></center>
+
 <table width ="100%">
   <tr bgcolor="#e4e4e4">
   <td>
@@ -706,13 +947,13 @@ Other memory:
 <tr>
   <td><img src="favicon.ico"></td>
    <td>
-      <a href="ChangeLog.txt">Change Logs for all releases</a><br>
+      <a href="ChangeLog.txt">Change Logs for All NuttX Releases</a><br>
    </td>
 </tr>
 <tr>
   <td><img src="favicon.ico"></td>
    <td>
-      <a href="#currentrelease">ChangeLog for Current Release</a><br>
+      <a href="#currentrelease">ChangeLog for Current Releases</a><br>
    </td>
 </tr>
 <tr>
@@ -732,12 +973,27 @@ Other memory:
 </table>
 
 <pre><ul>
-0.3.6 2007-01-06 Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
+nuttx-0.3.10 2008-05-15 Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
 
-	* Changes for use with SDCC compiler
-	* Added a simulated z80 target
-	* Fix deadlock errors when using stdio but with no buffering
-	* Add support for Pascal P-Code interpreter
+	* Add support for the ZiLOG EZ80Acclaim microcontrooler (EZ80F91 chip).
+	* Add configuration for the ZiLOG z8f64200100kit development kit, Z8F6423 part.
+	* Add configuration for the ZiLOG ez80f0910200kitg development kit, EZ80F091 part.
+	* Correct critical list handling errors in task shutdown logic: One in timer
+	  deletion logic (timer_delete.c) and one in stream logic (lib_init.c).
+
+pascal-0.1.2 2008-02-10 Gregory Nutt <spudmonkey@racsa.co.cr>
+
+	* Add logic to build and link with the ZDS-II toolchain
+	  use with the z16f.
+	* Make sure that POFF header structures are aligned
+	* Standardized POFF file format to big-endian
+	* Break up large switch statements to lower complexity
+	  and eliminate a compiler bug
+	* Changes so that runtime compiles with SDCC.
+
+buildroot-0.1.0 2007-03-09 &lt;spudmonkey@racsa.co.cr&gt
+
+	* Support for arm-elf toolchain
 </pre></ul>
 
 <table width ="100%">
@@ -749,7 +1005,13 @@ Other memory:
 </table>
 
 <pre><ul>
-0.3.7 2007-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
+nuttx-0.3.11 2008-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
+
+pascal-0.1.3 2008-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
+
+buildroot-0.1.1 2007-xx-xx &lt;spudmonkey@racsa.co.cr&gt
+
+	*  Support for m68k-elf and m68hc11 toolchain
 </pre></ul>
 
 <table width ="100%">
@@ -809,7 +1071,7 @@ Other memory:
   <li>TI is a tradename of Texas Instruments Incorporated.</li>
   <li>UNIX is a registered trademark of The Open Group.</li>
   <li>VxWorks is a registered trademark of Wind River Systems, Incorporated.</li>
-  <li>Z80 is a registered trademark of Zilog, Inc.</li>
+  <li>ZDS, ZNEO, Z16F, Z80, and Zilog are a registered trademark of Zilog, Inc.</li>
 </ul>
 <p>
   NOTE: NuttX is <i>not</i> licensed to use the POSIX trademark.  NuttX uses the POSIX

Documentation/NuttXBanner.html

@@ -29,6 +29,11 @@
       </tr>
     </table>
   </td>
+  <td width="210">
+    <a href="freeports.html" target="_blank">
+      <img src="freeports.gif" width="210" height="62" border="0"/>
+    </a>
+  </td>
   </tr>
 </body>
-</html>
+</html>

Documentation/NuttxPortingGuide.html

@@ -6,17 +6,17 @@
 </head>
 
 <body background="backgd.gif">
-<hr>
+<hr><hr>
 <center><h1><i>Under Construction</i></h1></center>
-<hr>
+<hr><hr>
 <center>
-  <big><b>
-    <p>NuttX Operating System</p>
-    <p>Porting Guide</p>
-  </b></big>
+  <h1><big><b>
+    <p>NuttX Operating System</br>
+    Porting Guide</p>
+  </b></big></h1>
   <p><small>by</small></p>
   <p>Gregory Nutt</p>
-  <p><small>Last Update: January 6, 2006</small></p>
+  <p><small>Last Update: March 15, 2008</small></p>
 </center>
 
 <center><h1>Table of Contents</h1></center>
@@ -36,7 +36,7 @@
     <li><a href="#summaryofconfigfiles">2.3.2 Summary of Files</a></li>
     <ul>
       <li><a href="#boardlogic">2.3.2.1 Board Specific Logic</a></li>
-      <li><a href="#boardconfigfiles">2.3.2.2 Board Specific Configuration Files</a></li>
+      <li><a href="#boardconfigsubdirs">2.3.2.2 Board Specific Configuration Sub-Directories</a></li>
     </ul>
     <li><a href="#supportedboards">2.3.3 Supported Boards</a></li>
   </ul>
@@ -90,13 +90,13 @@
 </ul>
 <li><a href="#NxFileSystem">5.0 NuttX File System</a></li>
 <li><a href="#apndxconfigs">Appendix A: NuttX Configuration Settings</a></li>
-
+<li><a href="#apndxtrademarks">Appendix B:  Trademarks</a></li>
 <hr>
 <h1>1.0 <a name="Introduction">Introduction</a></h1>
 
 <p><b>Overview</b>
   This document provides and overview of the NuttX build and configuration
-  logic and provides hints for the incorporation of new processor/board archectures
+  logic and provides hints for the incorporation of new processor/board architectures
   into the build.
 </p>
 <p>
@@ -132,7 +132,7 @@
 |   |       |  `-- <i>(chip-specific source files)</i>
 |   |       |--<i>&lt;other-chips&gt;</i>/
 |   |       `-- <i>(architecture-specific source files)</i>
-|   `-- <i>&lt;other-architectures&gt;</i>/
+|   `-- <i>&lt;other-architecture directories&gt;</i>/
 |-- <a href="#DirStructConfigs">configs</a>/
 |   |-- <i>&lt;board-name&gt;</i>/
 |   |   |-- include/
@@ -140,8 +140,10 @@
 |   |   |-- src/
 |   |   |   |-- Makefile
 |   |   |  `-- <i>(board-specific source files)</i>
-|   |   `-- <i>(board-specific configuration files)</i>
-|   `-- <i>&lt;other-boards&gt;</i>/
+|   |   |---<i>&lt;config1-dir&gt;</i>/
+|   |   |   `-- <i>(board-specific/configuration-specific files)</i>
+|   |   `---<i>(other board-specific configuration sub-directories)</i>/
+|   `-- <i>&lt;(other board directories)&gt;</i>/
 |-- <a href="#DirStructDrivers">drivers</a>/
 |   |-- Makefile
 |   `-- <i>(common driver source files)</i>
@@ -226,14 +228,14 @@
     </p>
   </li>
   <li>
-    <i>Board specific files</i>.
+    <i>Board specific configurations</i>.
     In order to be usable, the chip must be contained in a board environment.
     The board configuration defines additional properties of the board including such things as
     peripheral LEDs, external peripherals (such as network, USB, etc.).
     <p>
       These board-specific configuration files can be found in the
       <code>configs/</code><i>&lt;board-name&gt;</i><code>/</code> sub-directories and are discussed
-      in a a paragraph <a href="#configsdirectorystructure">below</a>.
+      in a paragraph <a href="#configsdirectorystructure">below</a>.
     </p>
   </li>
 </ul>
@@ -251,8 +253,8 @@
   This directory contains several sub-directories, each containing
   architecture-specific logic.
   The task of porting NuttX to a new processor consists of
-  add a new sudirectory under <code>arch/</code> containing logic specific
-  to the new architecuture.
+  add a new subdirectory under <code>arch/</code> containing logic specific
+  to the new architecture.
   The complete board port in is defined by the architecture-specific code in this
   directory (plus the board-specific configurations in the <code>config/</code>
   subdirectory).
@@ -382,7 +384,7 @@
     This directory holds common ARM architectures.  At present, this includes
     the following subdirectories:
     <ul>
-      <li><code>arch/arm/include</code> and <code>arch/arm/common</code>:
+      <li><code>arch/arm/include</code> and <code>arch/arm/src/common</code>:
           Common ARM logic.
       </li>
 
@@ -414,16 +416,51 @@
   </li>
 
   <li><code>arch/m68322</code>
-    A work in progress.</li>
+    A work in progress.
   </li>
 
   <li><code>arch/pjrc-8051</code>:
-    8051 Microcontroller.  This port is not quite ready for prime time.</li>
+    8051 Microcontroller.  This port is not quite ready for prime time.
   </li>
 
-  <li><code>arch/z80</code>:
-    z80 Microcontroller.  This port has been verified using only a z80 instruction simulator.</li>
+  <li><code>arch/z16f</code>:
+    Zilog z16f Microcontroller.
+    This port uses the Zilog z16f2800100zcog Development Kit.
+    This port was released with nuttx-0.3.7.
   </li>
+
+    <li><code>arch/z80</code>:
+    This directory holds 8-bit ZiLOG architectures.  At present, this includes the
+    Zilog z80, ez80Acclaim! and z8Encore! Microcontrollers.
+    <ul>
+      <li><code>arch/z80/include</code> and <code>arch/z80/src/common</code>:
+          Common logic.
+      </li>
+
+      <li><code>arch/z80/include/z80</code> and <code>arch/z80/src/z80</code>:
+        The Z80 port was released in nuttx-0.3.6 has been verified using only a
+        z80 instruction simulator.
+        The set simulator  can be found in the NuttX CVS at
+        http://nuttx.cvs.sourceforge.net/nuttx/misc/sims/z80sim.
+        This port also uses the SDCC toolchain (http://sdcc.sourceforge.net/")
+        (verified with version 2.6.0 and 2.7.0).
+      </li>
+
+      <li><code>arch/z80/include/ez80</code> and <code>arch/z80/src/ez80</code>:
+        The ez80Acclaim! port uses the ZiLOG ez80f0910200kitg development kit, eZ80F091 part,
+        with the Zilog ZDS-II Windows command line tools.
+        The development environment is Cygwin under WinXP.
+        This is a work in progress.  Verified ez80 support will be announced in a future NuttX release.
+      </li>
+
+      <li><code>arch/z80/include/z8</code> and <code>arch/z80/src/z8</code>:
+        The Z8Encore! port uses either the ZiLOG z8encore000zco development kit, Z8F6403 part,
+        or the z8f64200100kit development kit, Z8F6423 part with the Zilog ZDS-II Windows command line
+        tools.  The development environment is Cygwin under WinXP.
+        The initial release, verified only on the ZDS-II ez8 simulator, was released in nuttx-0.3.9.
+      </li>
+    </ul>
+    </li>
 </ul>
 
 <p>
@@ -461,15 +498,24 @@
   provide a subdirectory &lt;board-name&gt; under <code>configs/</code> with the following characteristics:
 </p>
 <ul><pre>
+	|-- Make.defs
+	|-- defconfig
+	`-- setenv.sh
 	<i>&lt;board-name&gt;</i>
 	|-- include/
 	|   `-- <i>(board-specific header files)</i>
 	|-- src/
 	|   |-- Makefile
 	|   `-- <i>(board-specific source files)</i>
-	|-- Make.defs
-	|-- defconfig
-	`-- setenv.sh
+        |-- <i>&lt;config1-dir&gt;</i>
+	|   |-- Make.defs
+	|   |-- defconfig
+	|   `-- setenv.sh
+        |-- <i>&lt;config2-dir&gt;</i>
+	|   |-- Make.defs
+	|   |-- defconfig
+	|   `-- setenv.sh
+	`-- <i>(other board-specific configuration sub-directories)</i>/
 </pre></ul>
 
 <h3><a name="summaryofconfigfiles">2.3.2 Summary of Files</a></h3>
@@ -495,10 +541,15 @@
     It must support the following targets:  <code>libext$(LIBEXT)</code>, <code>clean</code>, and <code>distclean</code>.
   </li>
 </ul>
-<h4><a name="boardconfigfiles">2.3.2.2 Board Specific Configuration Files</a></h4>
+<h4><a name="boardconfigsubdirs">2.3.2.2 Board Specific Configuration Sub-Directories</a></h4>
 <p>
   The <code>configs/</code><i>&lt;board-name&gt;</i><code>/</code> sub-directory holds all of the
   files that are necessary to configure Nuttx for the particular board.
+  A board may have various different configurations using the common source files.
+  Each board configuration is described by three files:  <code>Make.defs</code>, <code>defconfig</code>, and <code>setenv.sh</code>.
+  Typically, each set of configuration files is retained in a separate configuration sub-directory
+  (<i>&lt;config1-dir&gt;</i>, <i>&lt;config2-dir&gt;</i>, .. in the above diagram).
+
   The procedure for configuring NuttX is described <a href="#configuringnuttx">below</a>,
   This paragraph will describe the contents of these configuration files.
 </p>
@@ -511,6 +562,7 @@
     <ul>
       <li>Tools: CC, LD, AR, NM, OBJCOPY, OBJDUMP</li>
       <li>Tool options: CFLAGS, LDFLAGS</li>
+      <li>COMPILE, ASSEMBLE, ARCHIVE, CLEAN, and MKDEP macros</li>
     </ul>
     <p>
       When this makefile fragment runs, it will be passed TOPDIR which
@@ -522,7 +574,7 @@
   </li>
   <li>
     <code>defconfig</code>: This is a configuration file similar to the Linux
-    configuration file.  In contains varialble/value pairs like:
+    configuration file.  In contains variable/value pairs like:
     <ul>
       <li><code>CONFIG_VARIABLE</code>=value</li>
     </ul>
@@ -545,7 +597,7 @@
 <h3><a name="supportedboards">2.3.3 Supported Boards</a></h3>
 <p>
   All of the specific boards supported by NuttX are identified below.
-  These the the specific <i>&lt;board-name&gt;</i>'s that may be used to configure NuttX
+  These are the specific <i>&lt;board-name&gt;</i>'s that may be used to configure NuttX
   as described <a href="#configuringnuttx">below</a>.
 </p>
 <ul>
@@ -592,6 +644,37 @@
     This port is not quite ready for prime time.
   </li>
 
+  <li><code>configs/xtrs</code>
+    TRS80 Model 3.  This port uses a vintage computer based on the Z80.
+    An emulator for this computer is available to run TRS80 programs on a 
+    linux platform (http://www.tim-mann.org/xtrs.html).
+  </li>
+
+  <li><code>configs/z16f2800100zcog</code>
+    z16f Microcontroller.
+    This port use the Zilog z16f2800100zcog development kit and the
+    Zilog ZDS-II Windows command line tools.
+    The development environment is Cygwin under WinXP.
+  </li>
+
+  <li><code>configs/ez80f0910200kitg</code>
+    ez80Acclaim! Microcontroller.  This port use the Zilog ez80f0910200kitg
+    development kit, eZ80F091 part, and the Zilog ZDS-II Windows command line
+    tools.  The development environment is Cygwin under WinXP.
+  </li>
+
+  <li><code>configs/z8encore000zco</code>
+    z8Encore! Microcontroller.  This port use the Zilog z8encore000zco
+    development kit, Z8F6403 part, and the Zilog ZDS-II Windows command line
+    tools.  The development environment is Cygwin under WinXP.
+  </li>
+
+  <li><code>configs/z8encore000zco</code>
+    z8Encore! Microcontroller.  This port use the Zilog z8f64200100kit
+    development kit, Z8F6423 part, and the Zilog ZDS-II Windows command line
+    tools.  The development environment is Cygwin under WinXP.
+  </li>
+
   <li><code>configs/z80sim</code>:
     z80 Microcontroller.  This port uses a Z80 instruction set simulator.
     That simulator can be found in the NuttX CVS
@@ -683,19 +766,20 @@
 <p>
   <b>Manual Configuration</b>.
   Configuring NuttX requires only copying the
-  <a href="#boardconfigfiles">board-specific configuration files</a> into the top level directory which appears in the make files as the make variable, <code>${TOPDIR}</code>.
+  <a href="#boardconfigsubdirs">board-specific configuration files</a> into the top level directory which appears in the make files as the make variable, <code>${TOPDIR}</code>.
   This could be done manually as follows:
 </p>
 <ul>
-  <li>Copy <code>configs/</code><i>&lt;board-name&gt;</i></code>/Make.def</code> to <code>${TOPDIR}/Make.defs</code>,<li>
-  <li>Copy <code>configs/</code><i>&lt;board-name&gt;</i></code>/setenv.sh</code> to <code>${TOPDIR}/setenv.sh</code>, and</li>
-  <li>Copy <code>configs/</code><i>&lt;board-name&gt;</i></code>/defconfig</code> to <code>${TOPDIR}/.config</code></li>
+  <li>Copy <code>configs/</code><i>&lt;board-name&gt;</i><code>/[</code><i>&lt;config-dir&gt;</i><code>/]Make.def</code> to <code>${TOPDIR}/Make.defs</code>,<li>
+  <li>Copy <code>configs/</code><i>&lt;board-name&gt;</i><code>/[</code><i>&lt;config-dir&gt;</i><code>/]setenv.sh</code> to <code>${TOPDIR}/setenv.sh</code>, and</li>
+  <li>Copy <code>configs/</code><i>&lt;board-name&gt;</i><code>/[</code><i>&lt;config-dir&gt;</i><code>/]defconfig</code> to <code>${TOPDIR}/.config</code></li>
 </ul>
 <p>
   Where <i>&lt;board-name&gt;</i> is the name of one of the sub-directories of the
   NuttX <a href="#DirStructConfigs"><code>configs/</code></a> directory.
   This sub-directory name corresponds to one of the supported boards
   identified <a href="#supportedboards">above</a>.
+  And &lt;config-dir&gt; is the optional, specific configuration directory for the board.
 </p>
 <p>
   <b>Automated Configuration</b>.
@@ -704,7 +788,7 @@
 </p>
 <ul><pre>
   cd tools
-  ./configure.sh <i>&lt;board-name&gt;</i>
+  ./configure.sh <i>&lt;board-name&gt;</i></i><code>[/</code><i>&lt;config-dir&gt;</i><code>]</code>
 </pre></ul>
 
 <p>
@@ -733,14 +817,14 @@ make
   That directory also holds:
 </p>
 <ul>
-  <li>The makefile fragment <a href="#boardconfigfiles"><code>.config</code></a> that describes the current configuration.</li>
-  <li>The makefile fragment <a href="#boardconfigfiles"><code>Make.defs</code></a> that provides customized build targers, and</li>
-  <li>The shell script <a href="#boardconfigfiles"><code>setenv.sh</code></a> that sets up the configuration environment for the build.</li>
+  <li>The makefile fragment <a href="#boardconfigsubdirs"><code>.config</code></a> that describes the current configuration.</li>
+  <li>The makefile fragment <a href="#boardconfigsubdirs"><code>Make.defs</code></a> that provides customized build targers, and</li>
+  <li>The shell script <a href="#boardconfigsubdirs"><code>setenv.sh</code></a> that sets up the configuration environment for the build.</li>
 </ul>
 <p>
-The <a href="#boardconfigfiles"><code>setenv.sh</code></a> contains Linux environmental settings that are needed for the build.
-The specific environmental definitions are unique for each board but should include, as a minimum, updates to the <code>PATH</code> variable to include the full path to the architecture-specific toolchain identified in <a href="#boardconfigfiles"><code>Make.defs</code></a>.
-The <a href="#boardconfigfiles"><code>setenv.sh</code></a> only needs to be source'ed at the beginning of a session.
+The <a href="#boardconfigsubdirs"><code>setenv.sh</code></a> contains Linux/Cygwin environmental settings that are needed for the build.
+The specific environmental definitions are unique for each board but should include, as a minimum, updates to the <code>PATH</code> variable to include the full path to the architecture-specific toolchain identified in <a href="#boardconfigsubdirs"><code>Make.defs</code></a>.
+The <a href="#boardconfigsubdirs"><code>setenv.sh</code></a> only needs to be source'ed at the beginning of a session.
 The system can be re-made subsequently by just typing <code>make</code>.
 </p>
 <p>
@@ -935,7 +1019,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
 <p><b>Inputs:</b></p>
 <ul>
   <li><code>tcb</code>: Refers to a task in the ready-to-run list (normally
-    the task at the the head of the list).  It most be
+    the task at the head of the list).  It most be
     stopped, its context saved and moved into one of the
     waiting task lists.  It it was the task at the head
     of the ready-to-run list, then a context to the new
@@ -1234,7 +1318,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
 </ul>
 
 <p>
-  Some architectures require a description of the the RAM configuration:
+  Some architectures require a description of the RAM configuration:
 </p>
 <ul>
   <li><code>CONFIG_DRAM_SIZE</code>:
@@ -1242,7 +1326,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
   <li><code>CONFIG_DRAM_START</code>:
     The start address of DRAM (physical)</li>
   <li><code>CONFIG_DRAM_VSTART</code>:
-    The startaddress of DRAM (virtual)</li>
+    The start address of DRAM (virtual)</li>
 </ul>
 
 <p>
@@ -1284,7 +1368,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
     <code>CONFIG_DEBUG_LIB</code>: enable C library debug output (disabled by default)
   </li>
   <li>
-    <code>CONFIG_HAVE_LOWPUTC</code>: architecture supports low-level, boot
+    <code>CONFIG_ARCH_LOWPUTC</code>: architecture supports low-level, boot
     time console output
   </li>
   <li>
@@ -1534,6 +1618,22 @@ The system can be re-made subsequently by just typing <code>make</code>.
   </li>
 </ul>
 
+<h1><a name="apndxtrademarks">Appendix B:  Trademarks</a></h1>
+
+  <li>ARM, ARM7 ARM7TDMI, ARM9, ARM926EJS are trademarks of Advanced RISC Machines, Limited.</li>
+  <li>Cygwin is a trademark of Red Hat, Incorporated.</li>
+  <li>Linux is a registered trademark of Linus Torvalds.</li>
+  <li>LPC2148 is a trademark of NXP Semiconductors.</li>
+  <li>TI is a tradename of Texas Instruments Incorporated.</li>
+  <li>UNIX is a registered trademark of The Open Group.</li>
+  <li>VxWorks is a registered trademark of Wind River Systems, Incorporated.</li>
+  <li>ZDS, ZNEO, Z16F, Z80, and Zilog are a registered trademark of Zilog, Inc.</li>
+
+<p>
+  NOTE: NuttX is <i>not</i> licensed to use the POSIX trademark.  NuttX uses the POSIX
+  standard as a development guideline only.
+</p>
+
 </body>
 </html>
 

Documentation/NuttxUserGuide.html

@@ -21,7 +21,7 @@ User's Manual
 <p>
 Gregory Nutt
 <p>
-<small>Last Update: December 10, 2007</small>
+<small>Last Update: Februrary 2, 2008</small>
 </center>
 
 <h1>1.0 <A NAME="Introduction">Introduction</a></h1>
@@ -62,9 +62,15 @@ Gregory Nutt
     <b>Section 3.0, <a href="#Data_Structures">OS Data Structures</a></b>:
     This section documents the data structures that are used at the NuttX
     interface.
+    <ul>
+      <li>Paragraph 3.1 <a href="#ScalarType">Scalar Types</a></li>
+      <li>Paragraph 3.2 <a href="#HiddenStructures">Hidden Interface Structures</a></li>
+      <li>Paragraph 3.3 <a href="#ErrnoAccess">Access to the <code>errno</code> Variable</a></li>
+      <li>Paragraph 3.4 <a href="#UserStructures">User Interface Structures</a></li>
+    </ul>
   </li>
   <li>
-    <a href="#index">Index</a>
+    <a href="#index"><b>Index</b></a>
   </li>
 </ul>
 
@@ -227,7 +233,7 @@ paragraphs.
 <li>
   Returns the non-zero task ID of the new task or
   ERROR if memory is insufficient or the task cannot be
-  created (errno is not set).
+  created (<a href="#ErrnoAccess"><code>errno</code></a> is not set).
 </LI>
 </ul>
 
@@ -296,7 +302,7 @@ VxWorks provides the following similar interface:
 <ul>
   <li><p>OK, or ERROR if the task cannot be initialized.</P>
   <p>This function can only failure is it is unable to assign
-    a new, unique task ID to the TCB (errno is not set).</P>
+    a new, unique task ID to the TCB (<a href="#ErrnoAccess"><code>errno</code></a> is not set).</P>
 </ul>
 <p>
 <b>Assumptions/Limitations:</b>
@@ -348,7 +354,7 @@ task_init argument).
 <p>
 <b>Returned Values:</b> 
 <ul>
-<li>OK, or ERROR if the task cannot be activated (errno is not set).
+<li>OK, or ERROR if the task cannot be activated (<a href="#ErrnoAccess"><code>errno</code></a> is not set).
 </ul>
 
 <p>
@@ -399,7 +405,7 @@ zero signifies the calling task.
 <b>Returned Values:</b> 
 <ul>
 <li>OK, or ERROR if the task cannot be deleted.
-This function can fail if the provided pid does not correspond to a task (errno is not set)
+This function can fail if the provided pid does not correspond to a task (<a href="#ErrnoAccess"><code>errno</code></a> is not set)
 </ul>
 
 <p>
@@ -613,7 +619,7 @@ Compatible with the POSIX interface of the same name.
 <p>
   <b>Returned Values:</b>
   On success, sched_setparam() returns 0 (OK).
-  On error, -1 (ERROR) is returned, and<code>errno</code>is set appropriately.
+  On error, -1 (ERROR) is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately.
 </p>
 <ul>
 
@@ -714,7 +720,7 @@ interface of the same name.
 <p>
   <b>Returned Values:</b> 
   On success, <i>sched_setscheduler()</i> returns OK (zero).  On
-  error, ERROR (-1) is returned, and<code>errno</code>is set appropriately:
+  error, ERROR (-1) is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
 </p>
 <ul>
   <li>EINVAL The scheduling policy is not one of the
@@ -762,7 +768,7 @@ policy.
   <li>
     On success, <i>sched_getscheduler()</i> returns the policy for
     the task (either SCHED_FIFO or SCHED_RR).
-    On error,  ERROR (-1) is returned, and<code>errno</code>is set appropriately:
+    On error,  ERROR (-1) is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
     <ul>
       <li>ESRCH  The task whose ID is pid could not be found.</li>
     </ul>
@@ -775,7 +781,7 @@ policy.
 interface of the same name.
 Differences from the full POSIX implementation include:
 <ul>
-<li>Does not report errors via <I>errno</I>.
+<li>Does not report errors via <a href="#ErrnoAccess"><code>errno</code></a>.
 </ul>
 
 <H3><a name="sched_yield">2.2.5 sched_yield</a></H3>
@@ -894,7 +900,7 @@ priority of the calling task is returned.
 <p>
   <b>Returned Values:</b> 
   On success, sched_rr_get_interval() returns OK (0).  On
-  error, ERROR (-1) is returned, and<code>errno</code>is set to:
+  error, ERROR (-1) is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set to:
 </p>
 <ul>
   <li>EFAULT Cannot copy to interval</LI>
@@ -1216,7 +1222,7 @@ interface of the same name.
 <p>
   <b>Returned Values:</b>
   On success, <code>mq_send()</code> returns 0 (<code>OK</code>);
-  on error, -1 (<code>ERROR</code>) is returned, with <code>errno</code> set
+  on error, -1 (<code>ERROR</code>) is returned, with <a href="#ErrnoAccess"><code>errno</code></a> set
   to indicate the error:
 </p>
 <ul>
@@ -1299,7 +1305,7 @@ interface of the same name.
 <p>
   <b>Returned Values:</b>
   On success, <code>mq_send()</code> returns 0 (<code>OK</code>);
-  on error, -1 (<code>ERROR</code>) is returned, with <code>errno</code> set
+  on error, -1 (<code>ERROR</code>) is returned, with <a href="#ErrnoAccess"><code>errno</code></a> set
   to indicate the error:
 </p>
 <ul>
@@ -1370,7 +1376,7 @@ interface of the same name.
 <p>
   <b>Returned Values:</b>.
   One success, the length of the selected message in bytes is returned.
-  On failure, -1 (<code>ERROR</code>) is returned and the <code>errno</code> is set appropriately:
+  On failure, -1 (<code>ERROR</code>) is returned and the <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
 </p>
 <ul>
   <li>
@@ -1451,7 +1457,7 @@ interface of the same name.
 <p>
   <b>Returned Values:</b>.
   One success, the length of the selected message in bytes is returned.
-  On failure, -1 (<code>ERROR</code>) is returned and the <code>errno</code> is set appropriately:
+  On failure, -1 (<code>ERROR</code>) is returned and the <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
 </p>
 <ul>
   <li>
@@ -1516,7 +1522,7 @@ registration.
 <li><I>mqdes</I>. Message queue descriptor
 <li><I>notification</I>. Real-time signal structure containing:
 <ul>
-<li><I>sigev_notify</I>. Should be osSIGEV_SIGNAL (but actually
+<li><I>sigev_notify</I>. Should be SIGEV_SIGNAL (but actually
 ignored)
 <li><I>sigev_signo</I>. The signo to use for the notification
 <li><I>sigev_value</I>. Value associated with the signal
@@ -1951,9 +1957,8 @@ the lock or the call is interrupted by a signal.
 </ul>
 <p>
 If <I>sem_wait</I> returns -1 (ERROR) then the cause of the failure
-will be indicated by the thread-specific <I>errno</I> value (a pointer
-to this value can be obtained using <I>get_errno_ptr()</I>).  The following
-lists the possible values for <I>errno</I>:
+will be indicated by the thread-specific <a href="#ErrnoAccess"><code>errno</code></a>.
+The following lists the possible values for <a href="#ErrnoAccess"><code>errno</code></a>:
 <p>
 <ul>
 <li><I>EINVAL</I>:  Indicates that the <I>sem</I> input parameter is
@@ -1992,9 +1997,8 @@ returns without blocking.
 <li>0 (OK) or -1 (ERROR) if unsuccessful
 </ul>
 If <I>sem_wait</I> returns -1 (ERROR) then the cause of the failure
-will be indicated by the thread-specific <I>errno</I> value (a pointer
-to this value can be obtained using <I>get_errno_ptr()</I>).  The following
-lists the possible values for <I>errno</I>:
+will be indicated by the thread-specific <a href="#ErrnoAccess"><code>errno</code></a>.
+The following lists the possible values for <a href="#ErrnoAccess"><code>errno</code></a>:
 <p>
 <ul>
 <li><I>EINVAL</I>:  Indicates that the <I>sem</I> input parameter is
@@ -2522,7 +2526,7 @@ VxWorks provides the following comparable interface:
   If the call succeeds, <code>timer_create()</code> will return 0 (<code>OK</code>) and update the
   location referenced by <code>timerid</code> to a <code>timer_t</code>, which can be passed to the
   other per-thread timer calls.  If an error occurs, the function will return
-  a value of -1 (<code>ERROR</code>) and set<code>errno</code>to indicate the error.
+  a value of -1 (<code>ERROR</code>) and set <a href="#ErrnoAccess"><code>errno</code></a> to indicate the error.
 </p>
 <ul>
   <li><code>EAGAIN</code>. The system lacks sufficient signal queuing resources to honor the
@@ -2570,7 +2574,8 @@ VxWorks provides the following comparable interface:
 </p>
 <p>
   If successful, the <I>timer_delete()</I> function will return zero (<I>OK</I>).
-  Otherwise, the function will return a value of -1 (ERROR) and set<code>errno</code>to indicate the error:
+  Otherwise, the function will return a value of -1 (ERROR) and set
+  <a href="#ErrnoAccess"><code>errno</code></a> to indicate the error:
 </p>
 <ul>
   <li><code>EINVAL</code>. The timer specified timerid is not valid.</li>
@@ -2647,7 +2652,8 @@ VxWorks provides the following comparable interface:
 </p>
 <p>
   If the timer_gettime() succeeds, a value of 0 (OK) will be returned.
-  If an error occurs, the value -1 (ERROR) will be returned, and<code>errno</code>set to indicate the error.
+  If an error occurs, the value -1 (ERROR) will be returned, and 
+  <a href="#ErrnoAccess"><code>errno</code></a> set to indicate the error.
 </p>
 <ul>
   <li><code>EINVAL</code>. The timerid argument does not correspond to an ID returned by timer_create() but not yet deleted by timer_delete().</li>
@@ -3065,12 +3071,12 @@ If sigprocmask() fails, the signal mask of the task is not changed.
 <ul>
 <li><I>how</I>. How the signal mast will be changed:
 <ul>
-<li><I>osSIG_BLOCK</I>. The resulting set is the union of the
+<li><I>SIG_BLOCK</I>. The resulting set is the union of the
 current set and the signal set pointed to by the <I>set</I> input parameter.
-<li><I>osSIG_UNBLOCK</I>. The resulting set is the intersection
+<li><I>SIG_UNBLOCK</I>. The resulting set is the intersection
 of the current set and the complement of the signal set pointed
 to by the <I>set</I> input parameter.
-<li><I>osSIG_SETMASK</I>. The resulting set is the signal set
+<li><I>SIG_SETMASK</I>. The resulting set is the signal set
 pointed to by the <I>set</I> input parameter.
 </ul>
 
@@ -3280,7 +3286,7 @@ the unblocked signal is ignored.
 <b>Function Prototype:</b> 
 <pre>
     #include &lt;signal.h&gt;
-    int sigqueue (int tid, int signo, const union sigval value);
+    int sigqueue (int tid, int signo, union sigval value);
 </pre>
 
 <p>
@@ -3307,7 +3313,7 @@ is delivered more than once.&quot;
 <ul>
 <li>
   On  success (at least one signal was sent), zero (OK) is returned.
-  On error, -1 (ERROR) is returned, and<code>errno</code>is set appropriately.
+  On error, -1 (ERROR) is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately.
   <ul>
     <li><code>EGAIN</code>. The limit of signals which may be queued has been reached.</li>
     <li><code>EINVAL</code>. signo was invalid.</li>
@@ -5860,7 +5866,7 @@ Those socket APIs are discussed in the following paragraphs.</p>
 </ul>
 <p>
   <b>Returned Values:</b>
-  0 on success; -1 on error with<code>errno</code>set appropriately:
+  0 on success; -1 on error with <a href="#ErrnoAccess"><code>errno</code></a> set appropriately:
 </p>
 <ul>
   <li><code>EACCES</code>.
@@ -5906,7 +5912,7 @@ Those socket APIs are discussed in the following paragraphs.</p>
 </ul>
 <p>
   <b>Returned Values:</b>
-  0 on success; -1 on error with<code>errno</code>set appropriately:
+  0 on success; -1 on error with <a href="#ErrnoAccess"><code>errno</code></a> set appropriately:
 </p>
 <ul>
   <li><code>EACCES</code>
@@ -5961,7 +5967,7 @@ Those socket APIs are discussed in the following paragraphs.</p>
 </ul>
 <p>
   <b>Returned Values:</b>
-  0 on success; -1 on error with<code>errno</code>set appropriately:
+  0 on success; -1 on error with <a href="#ErrnoAccess"><code>errno</code></a> set appropriately:
 </p>
   <li><code>EACCES</code> or </code>EPERM</code>:
     The user tried to connect to a broadcast address without having the
@@ -6028,7 +6034,8 @@ Those socket APIs are discussed in the following paragraphs.</p>
 </ul>
 <p>
   <b>Returned Values:</b>
-  On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
+  On success, zero is returned. On error, -1 is returned, and
+  <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately.
 </p>
 <ul>
   <li><code>EADDRINUSE</code>: Another socket is already listening on the same port.</li>
@@ -6177,7 +6184,8 @@ Those socket APIs are discussed in the following paragraphs.</p>
 </ul>
 <p>
   <b>Returned Values:</b>
-  On success, returns the number of characters sent.  On  error, -1 is returned, and<code>errno</code>is set appropriately:
+  On success, returns the number of characters sent.  On  error, -1 is returned,
+  and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
 </p>
 <ul>
   <li><code>EAGAIN</code> or <code>EWOULDBLOCK</code>.
@@ -6284,7 +6292,7 @@ Those socket APIs are discussed in the following paragraphs.</p>
 <p>
   <b>Returned Values:</b>
   On success, returns the number of characters sent.
-  On error, -1 is returned, and errno is set appropriately:
+  On error, -1 is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
 </p>
 <ul>
     <li><code>EAGAIN</code>.
@@ -6348,7 +6356,7 @@ Those socket APIs are discussed in the following paragraphs.</p>
 <p>
   <b>Returned Values:</b>
   On success, returns the number of characters sent.
-  On error, -1 is returned, and errno is set appropriately:
+  On error, -1 is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
 </p>
 <ul>
   <li><code>BADF</code>.
@@ -6411,7 +6419,7 @@ Those socket APIs are discussed in the following paragraphs.</p>
 <p>
   <b>Returned Values:</b>
   On success, returns the number of characters sent.
-  On error, -1 is returned, and errno is set appropriately:
+  On error, -1 is returned, and <a href="#ErrnoAccess"><code>errno</code></a> is set appropriately:
 </p>
 <ul>
   <li><code>BADF</code>.
@@ -6428,8 +6436,8 @@ Those socket APIs are discussed in the following paragraphs.</p>
 </ul>
 
 <hr>
-<h1>3.0 <A NAME="Data_Structures">OS Data Structures</a></h1>
-<H2>3.1 Scalar types</H2>
+<h1>3.0 <A NAME="Data_Structures">OS Data Structures</A></h1>
+<H2>3.1 <A NAME="ScalarType">Scalar Types</A></H2>
 <p>
 Many of the types used to communicate with NuttX are simple
 scalar types. These types are used to provide architecture independence
@@ -6443,7 +6451,7 @@ interface include:
 <li>time_t
 </ul>
 
-<H2>3.2 Hidden Interface Structures</H2>
+<H2>3.2 <A NAME="HiddenStructures">Hidden Interface Structures</A></H2>
 <p>
 Several of the types used to interface with NuttX are
 structures that are intended to be hidden from the application.
@@ -6458,37 +6466,47 @@ OS resources. These hidden structures include:
 <li>pthread_key_t
 </ul>
 <p>
-In order to maintain portability, applications should not reference
-specific elements within these hidden structures. These hidden
-structures will not be described further in this user's manual.
+  In order to maintain portability, applications should not reference
+  specific elements within these hidden structures. These hidden
+  structures will not be described further in this user's manual.
+</p>
 <p>
 
-<H2>3.3. Access to the <I>errno</I> Variable</H2>
+<H2>3.3 <A NAME="ErrnoAccess">Access to the <code>errno</code> Variable</A></H2>
 <p>
-A pointer to the thread-specific <I>errno</I>. value is available through a
-function call:
+  A pointer to the thread-specific <code>errno</code> value is available through a
+  function call:
+</p>
 <p>
-<b>Function Prototype:</b>
+  <b>Function Prototype:</b>
 <p>
-<pre>    int *get_errno_ptr( void )</pre>
+<pre>    #include <errno.h>
+    #define errno *get_errno_ptr()
+    int *get_errno_ptr( void )</pre>
 <p>
-<b>Description</b>:  <I>osGetErrnorPtr()</I> returns a pointer to
-the thread-specific <I>errno</I> value.
+  <b>Description</b>:
+  <code>get_errno_ptr()</code> returns a pointer to the thread-specific <code>errno</code> value.
+  Note that the symbol <code>errno</code> is defined to be <code>get_errno_ptr()</code> so that the usual
+  access by referencing the symbol <code>errno</code> will work as expected.
+</p>
 <p>
-This differs somewhat from the use for<code>errno</code>in a multi-threaded process environment:
-Each pthread will have its own private copy of<code>errno</code>and the<code>errno</code>will not be shared
-between pthreads.
+  There is a unique, private <code>errno</code> value for each NuttX task.
+  However, the implementation of <code>errno</code> differs somewhat from the use of
+  <code>errno</code> in most multi-threaded process environments:
+  In NuttX, each pthread will also have its own private copy of <code>errno</code> and the
+  <code>errno</code> will not be shared between pthreads.
+  This is, perhaps, non-standard but promotes better thread independence.
 <p>
 <b>Input Parameters</b>:  None
 <p>
 <b>Returned Values</b>:
 <p>
 <ul>
-<li>A pointer to the thread-specific <I>errno</I> value.
+<li>A pointer to the thread-specific <code>errno</code> value.
 </ul>
 <p>
 
-<H2>3.4 User Interface Structures</H2>
+<H2>3.4 <A NAME="UserStructures">User Interface Structures</A></H2>
 <p>
 <H3>3.4.1 main_t</H3>
 <p>

Documentation/freeports.html

@@ -0,0 +1,20 @@
+<html>
+<head>
+<title>Free NuttX Ports</title>
+</head>
+<body background="backgd.gif">
+<center>
+<table border="1" width="80%" bgcolor="#eeeeee">
+<tr><td>
+<big><b><i>Free</i> Ports</b></big>.
+If you have a hardware platform that you would like to see NuttX ported to then have I got a deal for you:
+I am willing to port NuttX to run on your hardware <b><i>FREE</i></b>.
+You would, of course, have to provide all hardware, development tools, and documentation.
+The functionality would be limited to basic boot-up, serial console, networking, ...
+I would need to retain the hardware throught the support cycle.
+Of course, this offer depends the availability of free time to do the port.
+If you are interested, contact <a href="http://sourceforge.net/users/patacongo/">patacongo</a> at SourceForge.
+</td></tr></table>
+</body>
+</html>
+

Makefile

@@ -1,7 +1,7 @@
-############################################################
+############################################################################
 # Makefile
 #
-#   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
 #    notice, this list of conditions and the following disclaimer in
 #    the documentation and/or other materials provided with the
 #    distribution.
-# 3. Neither the name Gregory Nutt nor the names of its contributors may be
+# 3. Neither the name NuttX nor the names of its contributors may be
 #    used to endorse or promote products derived from this software
 #    without specific prior written permission.
 #
@@ -31,12 +31,19 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 #
-############################################################
+############################################################################
 
-TOPDIR		= ${shell pwd}
+TOPDIR		:= ${shell pwd | sed -e 's/ /\\ /g'}
 -include ${TOPDIR}/.config
 -include ${TOPDIR}/Make.defs
 
+# Default tools
+
+ifeq ($(DIRLINK),)
+DIRLINK		= $(TOPDIR)/tools/link.sh
+DIRUNLINK	= $(TOPDIR)/tools/unlink.sh
+endif
+
 # Process architecture and board-specific directories
 
 ARCH_DIR	= arch/$(CONFIG_ARCH)
@@ -47,7 +54,7 @@ BOARD_DIR	= configs/$(CONFIG_ARCH_BOARD)
 # Add-on directories.  These may or may not be in place in the
 # NuttX source tree (they must be specifically installed)
 
-PCODE_DIR	:= `if [ -r pcode/Makefile ]; then echo "pcode"; fi`
+PCODE_DIR	:= ${shell if [ -r pcode/Makefile ]; then echo "pcode"; fi}
 
 # FSDIRS depend on file descriptor support; NONFSDIRS do not
 #   (except for parts of FSDIRS).  We will exclude FSDIRS
@@ -113,7 +120,7 @@ all: $(BIN)
 
 # Build the mkconfig tool used to create include/nuttx/config.h
 tools/mkconfig:
-	$(MAKE) -C tools -f Makefile.mkconfig TOPDIR=$(TOPDIR)  mkconfig
+	@$(MAKE) -C tools -f Makefile.mkconfig TOPDIR="$(TOPDIR)"  mkconfig
 
 # Create the include/nuttx/config.h file
 include/nuttx/config.h: $(TOPDIR)/.config tools/mkconfig
@@ -121,79 +128,39 @@ include/nuttx/config.h: $(TOPDIR)/.config tools/mkconfig
 
 # link the arch/<arch-name>/include dir to include/arch
 include/arch: Make.defs
-	@if [ -h include/arch ]; then \
-		rm -f include/arch ; \
-	else \
-		if [ -e include/arch ]; then \
-			echo "include/arch exists but is not a symbolic link" ; \
-			exit 1 ; \
-		fi ; \
-	fi
-	@ln -s $(TOPDIR)/$(ARCH_DIR)/include include/arch
+	@$(DIRLINK) $(TOPDIR)/$(ARCH_DIR)/include include/arch
 
 # Link the configs/<board-name>/include dir to include/arch/board
-include/arch/board: Make.defs include/arch
-	@if [ -h include/arch/board ]; then \
-			rm -f include/arch/board ; \
-	else \
-		if [ -e include/arch/board ]; then \
-			echo "include/arch/board exists but is not a symbolic link" ; \
-			exit 1 ; \
-		fi ; \
-	fi
-	@ln -s $(TOPDIR)/$(BOARD_DIR)/include include/arch/board
+include/arch/board: include/arch Make.defs include/arch
+	@$(DIRLINK) $(TOPDIR)/$(BOARD_DIR)/include include/arch/board
 
 # Link the configs/<board-name>/src dir to arch/<arch-name>/src/board
 $(ARCH_SRC)/board: Make.defs
-	@if [ -h $(ARCH_SRC)/board ]; then \
-		rm -f $(ARCH_SRC)/board ; \
-	else \
-		if [ -e $(ARCH_SRC)/board ]; then \
-			echo "$(ARCH_SRC)/board exists but is not a symbolic link" ; \
-			exit 1 ; \
-		fi ; \
-	fi
-	@ln -s $(TOPDIR)/$(BOARD_DIR)/src $(ARCH_SRC)/board
+	@$(DIRLINK) $(TOPDIR)/$(BOARD_DIR)/src $(ARCH_SRC)/board
 
 # Link arch/<arch-name>/include/<chip-name> to arch/<arch-name>/include/chip
 $(ARCH_SRC)/chip: Make.defs
 ifneq ($(CONFIG_ARCH_CHIP),)
-	@if [ -h $(ARCH_SRC)/chip ]; then \
-		rm -f $(ARCH_SRC)/chip ; \
-	else \
-		if [ -e $(ARCH_SRC)/chip ]; then \
-			echo "$(ARCH_SRC)/chip exists but is not a symbolic link" ; \
-			exit 1 ; \
-		fi ; \
-	fi
-	@ln -s $(CONFIG_ARCH_CHIP) $(ARCH_SRC)/chip
+	@$(DIRLINK) $(TOPDIR)/$(ARCH_SRC)/$(CONFIG_ARCH_CHIP) $(ARCH_SRC)/chip
 endif
 
 # Link arch/<arch-name>/src/<chip-name> to arch/<arch-name>/src/chip
-$(ARCH_INC)/chip: Make.defs
+include/arch/chip: include/arch Make.defs
 ifneq ($(CONFIG_ARCH_CHIP),)
-	@if [ -e $(ARCH_INC)/chip ]; then \
-		if [ -h $(ARCH_INC)/chip ]; then \
-			rm -f $(ARCH_INC)/chip ; \
-		else \
-			echo "$(ARCH_INC)/chip exists but is not a symbolic link" ; \
-			exit 1 ; \
-		fi ; \
-	fi
-	@ln -s $(CONFIG_ARCH_CHIP) $(ARCH_INC)/chip
+	@$(DIRLINK) $(TOPDIR)/$(ARCH_INC)/$(CONFIG_ARCH_CHIP) include/arch/chip
 endif
 
-dirlinks: include/arch include/arch/board $(ARCH_SRC)/board $(ARCH_SRC)/chip $(ARCH_INC)/chip
+dirlinks: include/arch include/arch/board include/arch/chip $(ARCH_SRC)/board $(ARCH_SRC)/chip
 
 context: check_context include/nuttx/config.h dirlinks
 
 clean_context:
-	@rm -f include/nuttx/config.h include/arch
-	@if [ -h include/arch ]; then rm -f include/arch ; fi
-	@if [ -h $(ARCH_INC)/board ]; then rm -f $(ARCH_INC)/board ; fi
-	@if [ -h $(ARCH_SRC)/board ]; then rm -f $(ARCH_SRC)/board ; fi
-	@if [ -h $(ARCH_INC)/chip ]; then rm -f $(ARCH_INC)/chip ; fi
-	@if [ -h $(ARCH_SRC)/chip ]; then rm -f $(ARCH_SRC)/chip ; fi
+	@rm -f include/nuttx/config.h
+	@$(DIRUNLINK) include/arch/board
+	@$(DIRUNLINK) include/arch/chip
+	@$(DIRUNLINK) include/arch
+	@$(DIRUNLINK) $(ARCH_SRC)/board
+	@$(DIRUNLINK) $(ARCH_SRC)/chip
 
 check_context:
 	@if [ ! -e ${TOPDIR}/.config -o ! -e ${TOPDIR}/Make.defs ]; then \
@@ -203,63 +170,63 @@ check_context:
 	fi
 
 sched/libsched$(LIBEXT): context
-	$(MAKE) -C sched TOPDIR=$(TOPDIR) libsched$(LIBEXT)
+	@$(MAKE) -C sched TOPDIR="$(TOPDIR)" libsched$(LIBEXT)
 
 lib/liblib$(LIBEXT): context
-	$(MAKE) -C lib TOPDIR=$(TOPDIR) liblib$(LIBEXT)
+	@$(MAKE) -C lib TOPDIR="$(TOPDIR)" liblib$(LIBEXT)
 
 $(ARCH_SRC)/libarch$(LIBEXT): context
-	$(MAKE) -C $(ARCH_SRC) TOPDIR=$(TOPDIR) libarch$(LIBEXT)
+	@$(MAKE) -C $(ARCH_SRC) TOPDIR="$(TOPDIR)" libarch$(LIBEXT)
 
 mm/libmm$(LIBEXT): context
-	$(MAKE) -C mm TOPDIR=$(TOPDIR) libmm$(LIBEXT)
+	@$(MAKE) -C mm TOPDIR="$(TOPDIR)" libmm$(LIBEXT)
 
 net/libnet$(LIBEXT): context
-	$(MAKE) -C net TOPDIR=$(TOPDIR) libnet$(LIBEXT)
+	@$(MAKE) -C net TOPDIR="$(TOPDIR)" libnet$(LIBEXT)
 
 netutils/libnetutils$(LIBEXT): context
-	$(MAKE) -C netutils TOPDIR=$(TOPDIR) libnetutils$(LIBEXT)
+	@$(MAKE) -C netutils TOPDIR="$(TOPDIR)" libnetutils$(LIBEXT)
 
 fs/libfs$(LIBEXT): context
-	$(MAKE) -C fs TOPDIR=$(TOPDIR) libfs$(LIBEXT)
+	@$(MAKE) -C fs TOPDIR="$(TOPDIR)" libfs$(LIBEXT)
 
 drivers/libdrivers$(LIBEXT): context
-	$(MAKE) -C drivers TOPDIR=$(TOPDIR) libdrivers$(LIBEXT)
+	@$(MAKE) -C drivers TOPDIR="$(TOPDIR)" libdrivers$(LIBEXT)
 
 pcode/libpcode$(LIBEXT): context
-	$(MAKE) -C pcode TOPDIR=$(TOPDIR) libpcode$(LIBEXT)
+	@$(MAKE) -C pcode TOPDIR="$(TOPDIR)" libpcode$(LIBEXT)
 
 examples/$(CONFIG_EXAMPLE)/lib$(CONFIG_EXAMPLE)$(LIBEXT): context
-	$(MAKE) -C examples/$(CONFIG_EXAMPLE) TOPDIR=$(TOPDIR) lib$(CONFIG_EXAMPLE)$(LIBEXT)
+	@$(MAKE) -C examples/$(CONFIG_EXAMPLE) TOPDIR="$(TOPDIR)" lib$(CONFIG_EXAMPLE)$(LIBEXT)
 
 $(BIN):	context depend $(LINKLIBS)
-	$(MAKE) -C $(ARCH_SRC) TOPDIR=$(TOPDIR) LINKLIBS="$(LINKLIBS)" $(BIN)
+	@$(MAKE) -C $(ARCH_SRC) TOPDIR="$(TOPDIR)" LINKLIBS="$(LINKLIBS)" $(BIN)
 
 depend:
 	@for dir in $(MAKEDIRS) ; do \
-		$(MAKE) -C $$dir TOPDIR=$(TOPDIR) depend ; \
+		$(MAKE) -C $$dir TOPDIR="$(TOPDIR)" depend ; \
 	done
 
 subdir_clean:
 	@for dir in $(CLEANDIRS) ; do \
 		if [ -e $$dir/Makefile ]; then \
-			$(MAKE) -C $$dir TOPDIR=$(TOPDIR) clean ; \
+			$(MAKE) -C $$dir TOPDIR="$(TOPDIR)" clean ; \
 		fi \
 	done
-	$(MAKE) -C tools -f Makefile.mkconfig TOPDIR=$(TOPDIR) clean
-	$(MAKE) -C mm -f Makefile.test TOPDIR=$(TOPDIR) clean
+	@$(MAKE) -C tools -f Makefile.mkconfig TOPDIR="$(TOPDIR)" clean
+	@$(MAKE) -C mm -f Makefile.test TOPDIR="$(TOPDIR)" clean
 
 clean: subdir_clean
-	rm -f $(BIN) $(BIN).* mm_test *.map *~
+	@rm -f $(BIN) $(BIN).* mm_test *.map *~
 
 subdir_distclean:
 	@for dir in $(CLEANDIRS) ; do \
 		if [ -e $$dir/Makefile ]; then \
-			$(MAKE) -C $$dir TOPDIR=$(TOPDIR) distclean ; \
+			$(MAKE) -C $$dir TOPDIR="$(TOPDIR)" distclean ; \
 		fi \
 	done
 
 distclean: clean subdir_distclean clean_context
-	rm -f Make.defs setenv.sh .config
+	@rm -f Make.defs setenv.sh .config
 
 

ReleaseNotes

@@ -1,3 +1,366 @@
+nuttx-0.1.0
+^^^^^^^^^^^
+
+This is the initial.  This initial includes the complete NuttX RTOS
+with support for the Linux user mode simulation and the TI TMS320C5471
+(Arm7) processor.  Partial support for the 87C52 is included.
+
+This release has been verified on both the Linux user-mode and C5471
+platforms using the test program under examples/ostest.  Test results
+for the C5471 can be found in arch/c5471/doc/test-results.txt.
+
+This tarball contains a complete CVS snapshot from March 9,2007.
+
+nuttx-0.1.1
+^^^^^^^^^^^
+
+This is the second release of NuttX.  This release includes the following.
+See the ChangeLog for more detailed description of the changes.
+
+(1) General OS bugfixes (see the ChangeLog for details),
+(2) bugfixes for the TI TMS320C5471 (Arm7) platform (see
+    the ChangeLog)
+(3) Complete support for the 87C52. (However, the 87C52
+    release is not stable enough for general usage).
+(4) Added the beginning of a shell call NuttShell (nsh)
+
+This release has been verified on the Linux user-mode platform, the
+Spectrum Digital TMS320C5471 EVM, and the PJRC 87C52 development board
+using the test program under examples/ostest.
+
+STATUS: The development status remains as ALPHA until further testing
+is performed.
+
+This tarball contains a complete CVS snapshot from March 14, 2007.
+
+nuttx-0.1.2
+^^^^^^^^^^^
+
+This is the third release of NuttX.  This release is
+primarily a bugfix release with minimal new features.  See
+the ChangeLog for a more detailed description of the 
+changes.
+
+(1) Several important OS and ARM7 bugfixes,
+(2) opendir(), closedir(), readdir(), etc. added
+(3) Added C5471 watchdog timer.
+(4) Created a shareable, serial driver.
+(5) Added 'ls' command to NuttShell (nsh)
+(6) Added a test of the round robin scheduler
+
+This release has been verified on the Linux user-mode 
+platform, the  Spectrum Digital TMS320C5471 EVM using the
+test program under examples/ostest.
+
+This tarball contains a CVS snapshot from March 19, 2007.
+
+nuttx-0.2.1
+^^^^^^^^^^^
+
+This is the fourth relese of NuttX.  This release adds adds
+support for a new platform, restructures many header files,
+and adds a few new features:
+
+(1) Support for Neuros OSD / DM320
+(2) Restructuring of header files for better POSIX compliance
+(3) Added kill()
+(4) Added POSIX timers
+(5) bugfixes and documentation updates
+
+This release has been verified on the Linux user-mode 
+platform, the  Spectrum Digital TMS320C5471 EVM, and the 
+Neuros OSD  using the test program under examples/ostest.  Because
+of the stability of these tests, the project status
+has been upgraded to 'beta.'
+
+This tarball contains a complete CVS snapshot from March 22, 2007.
+
+nuttx-0.2.2
+^^^^^^^^^^^^
+
+This is the fifth release of NuttX.  There is no major new
+functionality in this release.  This release adds support
+for new pthread barrier APIs, changes the directory
+structure, to better handle different board configurations
+using the same processor architecture, and corrects a few
+defects.
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified on the Linux user-mode
+platform and the Neuros OSD using the test program under
+examples/ostest.  There are no known, critical defects but
+the project development status remains at 'beta' status
+pending further test and evaluation.
+
+This tarball contains a complete CVS snapshot from
+March 26, 2007.
+
+nuttx-0.2.3
+^^^^^^^^^^^^
+
+This is the sixth release of NuttX.  This release is
+primarily a bugfix release.  Numerous problems were fixed
+as detailedin the change log.  New functionality includes
+support for timed message queues.
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified on the Linux user-mode 
+platform and the Neuros OSD using the test program under
+examples/ostest. The results of the testing is available in
+the source tree under configs/ntosd-dm320/doc/test-results.
+There are no known, critical defects but the project
+development status remains at 'beta' status pending further
+test and evaluation.
+
+This tarball contains a complete CVS snapshot from March 29,
+2007.
+
+nuttx-0.2.4
+^^^^^^^^^^^^
+
+This is the 7th release of NuttX.  This release is only to roll out
+build changes to better support different SoC's that use the same
+processor architecture.  In particular, the two existing ARM architectures,
+c5471 and DM320 were combined into a single ARM directory.  This was done
+in preparation for an LPC2148 port that is currently in progress.  There
+is NO new functionality or significant bufixes in this release.
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified on the Linux user-mode platform
+and the Neuros OSD using the test program under examples/ostest.
+The results of the testing is available in the source tree under
+configs/ntosd-dm320/doc/test-results and under configs/sim/doc/test-results.
+There are no known, critical defects but the project development status
+remains at 'beta' status pending further test and evaluation.
+
+This tarball contains a complete CVS snapshot from April 28, 2007.
+
+nuttx-0.2.5
+^^^^^^^^^^^^
+
+This is the 8th release of NuttX.  This release includes:
+
+(1) Several bug fixes
+(2) Initial support for FAT filesystems.  Testing has not
+    been exhaustive and some functionality is missing
+   (mkdir, stat, unlink chmod, and rename functionality is 
+    not yet implemented).
+(3) Support for the NXP lpc2148 processor is included but
+    is untested as of this writing.  The current 
+    implementation includes only support for serial console
+    and timer interrupt.
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified only on the Linux user-mode
+platform.
+
+This tarball contains a complete CVS snapshot from May 19,
+2007.
+
+nuttx-0.2.6
+^^^^^^^^^^^
+
+This is the 9th release of NuttX.  This is primarily a
+bugfix release to correct a number of problems introduced
+with the 0.2.5 release. This release does include some FAT
+filesystem extensions including unlink(), mkdir(), rmdir(),
+rename(), opendir(), closedir(), readdir(), seekdir(),
+telldir(), rewindir().  There are some pending FAT changes
+that did not make it into this release including stat(),
+truncate(), and long file names.
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified only on the Linux user-mode
+platform.
+
+This tarball contains a complete CVS snapshot from May 26,
+2007.
+
+nuttx-0.2.7
+^^^^^^^^^^^
+
+This is the 10th release of NuttX.  This is primarily a bugfix releaseto correct a
+number of problems reported to me (thanks Didier!). This release does include the
+final changes complete the FAT filesystem logic including stat(), tatfs(), and non-
+standard APIs to manage FAT
+attributes.  At present,FAT long file names and file trunction() are still not
+supported.
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified only on the Linux user-mode platform.
+
+This tarball contains a complete CVS snapshot from June 9, 2007.
+
+nuttx-0.2.8
+^^^^^^^^^^^
+
+This is the 11th release of NuttX.  This release (1) corrects important bugs
+in opendir and realloc, (2) adds support for environment variables, (3) adds
+several new C library interfaces, and (4) extends several example programs.
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified only on the Linux user-mode platform.
+
+This tarball contains a complete CVS snapshot from July 2, 2007.
+
+nuttx-0.3.0
+^^^^^^^^^^^
+
+This is the 12th release of NuttX.  This release includes the initial
+integration of a network subsystem and the uIP TCP/IP stack into NuttX
+(see http://www.sics.se/~adam/uip/index.php/Main_Page).  Also included
+is a device driver for the Davicom DM90x0 ethernet controller.
+
+This integration is very preliminary.  Only a small portion of the
+network functionality has been integrated and there are a number of
+open issues (see the TODO file).  The network subsystem is pre-alpha
+at this point in time.  I expect that it will stabilize and mature
+over the next few releases.
+
+The baseline functionality of NuttX continues to mature and remains at
+post-beta (as long as the network is not used).
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified only on the Neuros OSD (DM320 ARM9)
+platform using the DM90x0 driver.
+
+This tarball contains a complete CVS snapshot from November 6, 2007.
+
+nuttx-0.3.1
+^^^^^^^^^^^
+
+This is the 13th release of NuttX and the second release containing
+the integration of a network subsystem and the uIP TCP/IP, UDP, and
+ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page).
+
+Many network-related problems have been fixed and the implementation
+has matured significantly.  However, the level of network reliability
+is probably still at the pre-alpha or early level.  It is sufficiently
+complete that you may begin to perform some network integration and
+is exepcted to achieve beta level of reliability over the next few
+releases.
+
+The baseline functionality of NuttX continues to mature and remains at
+post-beta (as long as the network is not used).
+
+See the ChangeLog for a complete list of changes.
+
+This release has been verified only on the Neuros OSD (DM320 ARM9)
+platform using the DM90x0 driver.
+
+This tarball contains a complete CVS snapshot from November 19, 2007.
+
+nuttx-0.3.2
+^^^^^^^^^^^
+
+This is the 14th release of NuttX and the 3rd release containing
+the integration of a network subsystem and the uIP TCP/IP, UDP, and
+ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page).
+
+Many network-related problems have been fixed and the implementation
+has matured significantly.  This release consists of:
+
+o TCP-related bug-fixes
+o TCP performance improvements
+o Initial UDP integration
+o Initial uIP micro webserver integration
+
+See the ChangeLog for a complete list of changes.
+
+The level of network reliability is at alpha level is expected to
+achieve beta level of reliability over the next few releases.
+
+The baseline functionality of NuttX continues to mature and remains at
+post-beta.
+
+This release has been verified only on the Neuros OSD (DM320 ARM9)
+platform using the DM90x0 driver.
+
+This tarball contains a complete CVS snapshot from November 23, 2007.
+
+nuttx-0.3.3
+^^^^^^^^^^^
+
+This is the 15th release of NuttX and the 4th release containing
+the integration of a network subsystem and the uIP TCP/IP, UDP, and
+ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page).
+
+Many network-related problems have been fixed and the implementation
+has matured significantly.  This release consists of:
+
+o TCP-related bug-fixes for disconnecting sockets
+o Correction of some TCP read-ahead logic
+o TCP performance improvements
+o Misc. additions and cleanup (See the ChangeLog for a complete list of
+  changes).
+
+The level of network reliability is at an early beta release level.  The
+baseline functionality of NuttX continues to mature and remains at
+post-beta. Open network-related issues include only:
+
+o Some minor unimplemented BSD socket functionality,
+o Thread safety issues: the same socket cannot be used concurrently on
+  different threads.
+o Pending design changes necessary to support multiple network interfaces.
+o IPv6 support is incomplete.
+
+This release has been verified only on the Neuros OSD (DM320 ARM9)
+platform using the DM90x0 driver. Any feedback for improving the network
+reliability/performance would be greatly appreciated.
+
+This tarball contains a complete CVS snapshot from November 28, 2007.
+
+nuttx-0.3.4
+^^^^^^^^^^^
+
+This is the 16th release of NuttX and the 5th release containing
+the integration of a network subsystem and the uIP TCP/IP, UDP, and
+ICMP stacks into NuttX (see http://www.sics.se/~adam/uip/index.php/Main_Page).
+
+This release is primarily a bug-fix release.  New features include
+only:
+
+o TELNET front-end to NSH,
+o DHCPC server functionality, and
+o C5471 Ethernet driver.
+
+Numerous network related problems were fixed related to DHCPC, UDP
+input processing, UDP broadcast, send timeouts, and bad compilation when
+uIP is compiled at high levels of optimization.
+
+The level of network reliability is at a strong beta release level.  The
+baseline functionality of NuttX continues to mature and remains at
+post-beta or production level.
+
+Parts of this release were verified only on the Neuros OSD (DM320 ARM9)
+platform using the DM90x0 Ethernet driver and other parts on the Spectrum
+Digital C5471 EVM using the C5471 Ethernet driver. Any feedback about bugs
+or suggestions for improving the network reliability/performance would be
+greatly appreciated.
+
+This tarball contains a complete CVS snapshot from December 10, 2007.
+
+nuttx-0.3.5
+^^^^^^^^^^^
+
+This is the 17th release of NuttX this release is primarily a bug-fix
+release and intended to synchronize with the current CVS contents.  See
+the ChangeLog for a detailed list of changes and fixes.
+
+This release were verified only on the Spectrum Digital C5471 EVM using
+the C5471 Ethernet driver. Any feedback about bugs or suggestions for
+improvement would be greatly appreciated.
+
+This tarball contains a complete CVS snapshot from December 18, 2007.
+
 nuttx-0.3.6
 ^^^^^^^^^^^
 
@@ -18,3 +381,75 @@ simulation targets.  As usual, any feedback about bugs or suggestions
 for improvement would be greatly appreciated.
 
 This tarball contains a complete CVS snapshot from January 6, 2007.
+
+====
+
+There was an error in the initial 0.3.6 release that prevented
+a successful build unless the Pascal add-on was present.  The
+tarball was patched to include the fix.  Make sure that you download
+the nuttx-0.3.6.1.tar.gz version to avoid this problem.
+
+nuttx-0.3.7
+^^^^^^^^^^^
+
+This is the 19th release of NuttX.  This release includes the
+preliminary port of NuttX to the ZiLOG z16f 16-bit microcontroller.
+This port was verified using the ZiLOG z16f2800100zcog Development
+and the ZiLOG ZDS-II toolchain. See http://www.zilog.com for
+further information.
+
+I emphasize that this is a preliminary release of the z16f port and
+is only alpha or, perhaps, pre-alpha quality as of this writing.
+There are a list of known issues in the TODO file in the root of
+the NuttX directory.  The overall quality of NuttX (excluding the
+z16f port) continues to improve beyond the late beta level.
+
+The z16f port required numerous changes to NuttX to handle:
+
+* NEAR and FAR addressing, and
+* Use of a Windows native toolchain in a Cygwin build environment.
+
+In addition to the z16f port, at least one very critical bug was
+found and corrected in NuttX:  The thread-specific errno value of one
+task was being randomly trashed when a different thread exitted.
+
+This release were verified on the ZiLOG z16f2800100zcog, Neuros OSD
+(ARM9), and the simulation platforms.  As usual, any feedback about bugs
+or suggestions for improvement would be greatly appreciated.
+
+This tarball contains a complete CVS snapshot from January 31, 2008.
+
+nuttx-0.3.8
+^^^^^^^^^^^
+
+This is the 20th release of NuttX.  This is a minor bugfix release.
+It corrects a few minor problems, adds a few minor features, and
+continues the integration of the ZiLOG Z18F and of the Pascal P-Code
+add-on.  This release is synchronized with the release of Pascal-0.1.2.
+
+This tarball contains a complete CVS snapshot from February 10, 2008.
+
+nuttx-0.3.9
+^^^^^^^^^^^
+
+This is the 21st release of NuttX.  This is a minor future enhancement
+release.  This release includes support for the ZiLOG Z8Encore! micro-
+controller.  Also included is the initial framework for support for
+the Z80, XTRS platform (http://www.tim-mann.org/xtrs.html).
+
+This released has been verified only on the ZiLOG ZDS-II Z8Encore!
+chip simulation.
+
+This tarball contains a complete CVS snapshot from March 9, 2008.
+
+nuttx-0.3.10
+^^^^^^^^^^^^
+
+This is the 22nd release of NuttX.  This is an important bug fix release.
+This release incorporates fixes to correct critical list handling errors
+in task shutdown logic: One in timer deletion logic (timer_delete.c) and one
+in stream logic (lib_init.c).  This release also includes support to ZiLOG EZ80Acclaim
+microcontrooler (EZ80F91 chip) and configurations fot the ZiLOG z8f64200100kit (Z8F6423)
+and ez80f0910200kitg (EZ80F091) development kit.
+
+

TODO

@@ -1,4 +1,4 @@
-NuttX TODO List (Last updated December 13, 2007)
+NuttX TODO List (Last updated February 13, 2008)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
   (6)  Task/Scheduler (sched/)
@@ -7,19 +7,21 @@ NuttX TODO List (Last updated December 13, 2007)
   (1)  Signals (sched/, arch/)
   (1)  pthreads (sched/)
   (1)  C++ Support
-  (10) Network (net/, netutils/)
+  (11) Network (net/, netutils/)
   (2)  USB (drivers/usbdev)
   (3)  Libraries (lib/)
-  (2)  File system (fs/, drivers/)
+  (3)  File system/Generic drivers (fs/, drivers/)
+  (1)  Pascal add-on (pcode/)
   (2)  Documentation (Documentation/)
   (3)  Build system
   (0)  Applications & Tests (examples/)
   (1)  ARM (arch/arm/)
-  (0)  ARM/C5471 (arch/arm/src/c5471/)
+  (1)  ARM/C5471 (arch/arm/src/c5471/)
   (1)  ARM/DM320 (arch/arm/src/dm320/)
   (2)  ARM/LPC214x (arch/arm/src/lpc214x/)
   (4)  pjrc-8052 / MCS51 (arch/pjrc-8051/)
-  (2)  z80 (arch/z80/)
+  (6)  z80/z8 (arch/z80/)
+  (7)  z16 (arch/z16/)
 
 o Task/Scheduler (sched/)
   ^^^^^^^^^^^^^^^^^^^^^^^
@@ -182,6 +184,10 @@ o Network (net/, netutils/)
   Status:      Open
   Priority:    Medium
 
+  Description: Port PPP support from http://contiki.cvs.sourceforge.net/contiki/contiki-2.x/backyard/core/net/ppp/
+  Status:      Open
+  Priority:    Low
+
 o USB (drivers/usbdev)
   ^^^^^^^^^^^^^^^^^^^^
 
@@ -212,8 +218,8 @@ o Libraries (lib/)
   Status:      Open
   Priority:    Low
 
-o File system (fs/, drivers/)
-  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+o File system / Generic drivers (fs/, drivers/)
+  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
   Description: Add chmod(), truncate().
   Status:      Open
@@ -223,6 +229,22 @@ o File system (fs/, drivers/)
   Status:      Open
   Priority:    Medium
 
+  Description: The CAN driver is untested.  Add a test for the CAN driver.
+  Status:      Open
+  Priority:    Medium
+
+o Pascal Add-On (pcode/)
+  ^^^^^^^^^^^^^^^^^^^^^^
+
+  Description: Need APIs to verify execution of P-Code from memory buffer.
+  Status:      Open
+  Priority:    Low
+
+  Description: Loader and object format may be too large for some small
+               memory systems.  Consider ways to reduce memory footprint.
+  Status:      Open
+  Priority:    Medium
+
 o Documentation (Documentation/)
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -261,11 +283,16 @@ o ARM (arch/arm/)
                present, each interrupt executes on top of the user stack
                allocation making each user stack allocation larger than needed.
   Status:      Open
-  Priority:    Medim
+  Priority:    Medium
 
 o ARM/C5471 (arch/arm/src/c5471/)
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+  Description: UART re-configuration is untested and conditionally compiled out.
+  Status:      Open
+  Priority:    Medium.  ttyS1 is not configured, but not used; ttyS0 is configured
+               by the bootloader
+
 o ARM/DM320 (arch/arm/src/dm320/)
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -275,7 +302,7 @@ o ARM/DM320 (arch/arm/src/dm320/)
                the stack seems to fix the problem (might also be the
                bootloader overwriting memory)
   Status:      Open
-  Priority:    Mediam
+  Priority:    Medium
 
 o ARM/LPC214x (arch/arm/src/lpc214x/)
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -323,16 +350,16 @@ o pjrc-8052 / MCS51 (arch/pjrc-8051/)
   Status:      Open
   Priority:    Low -- only because there as so many other issues with 8051
 
-o z80 (arch/z80)
- ^^^^^^^^^^^^^^^
+o z80/z8 (arch/z80)
+ ^^^^^^^^^^^^^^^^^^
 
-  Description: The Has the same problems with interger overflow during compilation
-               as described for pjrc-8051.  At typical cause is code like
+  Description: The SDCC version the same problems with interger overflow during
+               compilation as described for pjrc-8051.  At typical cause is code like
                usleep(500*1000) which exceeds the range of a 16-bit integer
   Status:      See pjrc-8051
   Priority:    See pjrc-8051
 
-  Description: The simulated serial console (configs/z80sim/src/z80_serial.c +
+  Description: The simulated Z80 serial console (configs/z80sim/src/z80_serial.c +
                driver/serial.c) does not work.  This is because there are
                no interrupts in the simulation so there is never any serial
                traffic.
@@ -340,5 +367,129 @@ o z80 (arch/z80)
   Priority:    Low -- the simulated console is not critical path and the designs
                to solve the problem are complex.
 
+  Description: ZDS-II Librarian complains that the source for the .obj file
+               is not in the library.
+  Status:      Open
+  Priority:    Low, thought to be cosmetic.  I think this is a consequence of
+               replacing vs. inserting the library.
+
+  Description: The ZDS-II compiler (version 4.10.1) fails with an internal error
+               while compiler mm/mm_initialize.  This has been reported as
+               incident 81509.
+
+               I have found the following workaround that I use to build for the
+               time being:
+
+               --- mm/mm_initialize.c.SAVE	2008-02-13 08:06:46.833857700 -0600
+               +++ mm/mm_initialize.c	2008-02-13 08:07:26.367608900 -0600
+               @@ -94,8 +94,11 @@
+               {
+                  int i;
+
+               +#if 0 /* DO NOT CHECK IN */
+                  CHECK_ALLOCNODE_SIZE;
+                  CHECK_FREENODE_SIZE;
+               +#endif
+
+               /* Set up global variables */
+
+  Status:      Open
+  Priority:    High
+
+  Description: Add support for prioritized ez8 interrupts.  Currently logic supports
+               only nominal interrupt priority.
+  Status:      Open
+  Priority:    Low
+
+  Description: The z8Encore! port has only been verified on the ZDS-II instruction
+               set simulator.
+  Status:      Open
+  Priority:    Medium
+
+o z16 (arch/z16)
+^^^^^^^^^^^^^^^^
+
+  Description: ZDS-II Librarian complains that the source for the .obj file
+               is not in the library.
+  Status:      Open
+  Priority:    Low, thought to be cosmetic.  I think this is a consequence of
+               replacing vs. inserting the library.
+
+  Description: When the interrupt-driven serial driver is used, the system
+               hangs.  This is because of TX ready (TRDE) interrupts that
+               get lost while interrupts are disabled.  The existing
+               serial driver appears to be limited to hardware with a
+               latching, level-sensitive TX ready interrupt.
+  Status:      Open
+  Priority:    Medium. A polled, write-only serial driver is used in the
+               interim for system testing.
+
+  Description: The system delays do not appear to be correct with the
+               examples/ostest/timedmqueue.c test.
+  Status:      Open
+  Priority:    Medium-High
+
+  Description: At present, the z16f port does not run properly when CONFIG_DEBUG
+               is disabled:  The obvious symptom is that there is no printf()
+               output.  I have isolated with problem to errors in optimization.
+               With -reduceopt on the command line, I can get the printf output.
+               However, there are still errors in the compiled code -- specifically
+               in sched/timer_create.c.
+
+               I have submitted a bug report to ZiLOG for this (support incident
+               81400).  You can see the status of the bug report (and lots more
+               technical detail) here:
+               http://support.zilog.com/support/incident/incident_support.asp?iIncidentId=81400&iSiteId=1&chLanguageCode=ENG
+
+               Summary of ZiLOG analysis: "This is a ZNEO compiler problem. ... [a] workaround
+               is to replace:
+                   if ( !timerid || (clockid != 0) )
+                By:
+                   if ((clockid != 0) || !timerid)"
+
+  Status:      Open
+  Priority:    Medium-High
+
+  Description: The pascal add-on does not work with the z16f (that is
+               configuration z16f2800100zcog/pashello).  This appears to be
+               another ZDS-II error:  when executing the instruction
+               SYSIO 0, WRITESTR a large case statement is executed.  This
+               involves a call into the ZiLOG runtime library to __uwcase().
+               __uwcase is passed a pointer to a structure containing jump
+               information.  The cause of the failure appears to be that
+               the referenced switch data is bad.
+               This is submited as ZiLOG support incident 81459.
+
+               Summary of ZiLOG analysis: "This is a ZNEO run time library problem.
+               One workaround is to replace the line 58 in uwcase.asm
+
+               From:
+                      ADD       R9,#4             ; Skip handler
+               To:
+                      ADD       R9,#2             ; Skip handler
+
+               And add uwcase.asm to the project.
+
+               If the customer does not want to modify uwcase.asm then the other
+               workaround is to add a dummy case and make it same as default:
+
+               case 0x8000:
+               default:
+
+               This will make sure that uwcase is not called but ulcase is called."
+  Status:      Open.  Due to licensing issues, I cannot include the modified
+               uwcase in the NuttX code base.
+  Priority:    Medium
+
+  Description: Add support to maintain SPOV in context switching.  This
+               improvement will provide protection against stack overflow
+               and make a safer system solution.
+  Status:      Open
+  Priority:    Low
+
+  Description: Add support for prioritized interrupts.  Currently logic supports
+               only nominal interrupt priority.
+  Status:      Open
+  Priority:    Low
 
 

arch/README.txt

@@ -123,13 +123,13 @@ src/Makefile
 Supported Architectures
 ^^^^^^^^^^^^^^^^^^^^^^^
 
-arch/sim
+arch/sim - Linux simulation
     A user-mode port of NuttX to the x86 Linux platform is available.
-    The purpose of this port is primarily to support OS feature developement.
+    The purpose of this port is primarily to support OS feature development.
     This port does not support interrupts or a real timer (and hence no
     round robin scheduler)  Otherwise, it is complete.
 
-arch/arm
+arch/arm - ARM-based micro-controllers
     This directory holds common ARM architectures.  At present, this includes
     the following subdirectories:
 
@@ -156,13 +156,36 @@ arch/m68322
     A work in progress.
     STATUS:  Stalled for the moment.
 
-arch/pjrc-8051
+arch/pjrc-8051 - 8051/52 microcontrollers
     8051 Microcontroller.  This port is not quite ready for prime time.
 
-arch/z80
-    z80 Microcontroller.
-    STATUS: Functional with no known defects.  There are still several
-    OS features that have not yet been tested (e.g., networking).
+arch/z16 - ZiLOG 16-bit processors
+    This directory holds related, 16-bit architectures from ZiLOG.  At
+    present, this includes the following subdirectories:
+
+    arch/z16/include and arch/z16/common
+        Common microcontroller logic.
+
+    arch/z16/include/z16f and arch/z16/src/z16f
+        ZiLOG z16f Microcontroller.
+        STATUS: Released in nuttx-0.3.7.  Fully functional other than issues
+        addressed in ${TOPDIR}/TODO.
+
+arch/z80 - ZiLOG 8-bit microcontrollers
+    This directory holds related, 8-bit architectures from ZiLOG.  At
+    present, this includes the following subdirectories:
+
+    arch/z80/include and arch/z80/common
+        Common microcontroller logic.
+
+    arch/z80/include/z80 and arch/z80/src/z80
+        Classic ZiLOG z80 Microcontroller.
+        STATUS: Functional with no known defects.  There are still several
+         OS features that have not yet been tested (e.g., networking).
+
+    arch/z80/include/z8 and arch/z80/src/z8
+        ZiLOG Z8Encore! Microcontroller
+        This is a work in progress.
 
 The following architecture directories are deprecated.  They have been
 replaced by the logic in arm/arm and will deleted at some point in the

arch/arm/include/arch.h

@@ -77,4 +77,3 @@ extern "C" {
 #endif
 
 #endif /* __ARCH_ARCH_H */
-

arch/arm/src/Makefile

@@ -1,7 +1,7 @@
 ############################################################################
-# Makefile
+# arch/arm/src/Makefile
 #
-#   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
 #    notice, this list of conditions and the following disclaimer in
 #    the documentation and/or other materials provided with the
 #    distribution.
-# 3. Neither the name Gregory Nutt nor the names of its contributors may be
+# 3. Neither the name NuttX nor the names of its contributors may be
 #    used to endorse or promote products derived from this software
 #    without specific prior written permission.
 #
@@ -36,7 +36,6 @@
 -include $(TOPDIR)/Make.defs
 -include chip/Make.defs
 
-MKDEP 		= $(TOPDIR)/tools/mkdeps.sh
 ARCH_SRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
 CFLAGS		+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(TOPDIR)/sched
 
@@ -67,22 +66,22 @@ VPATH		= chip:common
 all: $(HEAD_OBJ) libarch$(LIBEXT)
 
 $(AOBJS) $(HEAD_AOBJ): %$(OBJEXT): %.S
-	$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
+	$(call ASSEMBLE, $<, $@)
 
 $(COBJS): %$(OBJEXT): %.c
-	$(CC) -c $(CFLAGS) $< -o $@
+	$(call COMPILE, $<, $@)
 
 libarch$(LIBEXT): $(OBJS)
 	@( for obj in $(OBJS) ; do \
-		$(AR) $@ $${obj} || \
-			{ echo "$(AR) $@ $obj FAILED!" ; exit 1 ; } ; \
+		$(call ARCHIVE, $@, $${obj}); \
 	done ; )
 
 board/libboard$(LIBEXT):
-	$(MAKE) -C board TOPDIR=$(TOPDIR) libboard$(LIBEXT)
+	$(MAKE) -C board TOPDIR="$(TOPDIR)" libboard$(LIBEXT)
 
 nuttx: $(HEAD_AOBJ) board/libboard$(LIBEXT)
-	$(LD) --entry=__start $(LDFLAGS) $(LDPATHES) -L$(BOARDDIR) -o $(TOPDIR)/$@ $(HEAD_AOBJ) \
+	@echo "LD: nuttx"
+	@$(LD) --entry=__start $(LDFLAGS) $(LDPATHES) -L$(BOARDDIR) -o $(TOPDIR)/$@ $(HEAD_AOBJ) \
 		--start-group $(LDLIBS) -lboard --end-group $(EXTRA_LIBS) $(LIBGCC) 
 	@$(NM) $(TOPDIR)/$@ | \
 	grep -v '\(compiled\)\|\(\$(OBJEXT)$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
@@ -101,23 +100,23 @@ endif
 
 .depend: Makefile chip/Make.defs $(SRCS)
 	@if [ -e board/Makefile ]; then \
-		$(MAKE) -C board TOPDIR=$(TOPDIR) depend ; \
+		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
 	fi
-	$(MKDEP) --dep-path chip --dep-path common $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@$(MKDEP) --dep-path chip --dep-path common $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
 	@touch $@
 
 depend: .depend
 
 clean:
 	@if [ -e board/Makefile ]; then \
-		$(MAKE) -C board TOPDIR=$(TOPDIR) clean ; \
+		$(MAKE) -C board TOPDIR="$(TOPDIR)" clean ; \
 	fi
-	@rm -f libarch$(LIBEXT) *~
-	@if [ ! -z "$(OBJEXT)" ]; then rm -f *$(OBJEXT); fi
+	@rm -f libarch$(LIBEXT) *~ .*.swp
+	$(call CLEAN)
 
 distclean: clean
 	@if [ -e board/Makefile ]; then \
-		$(MAKE) -C board TOPDIR=$(TOPDIR) distclean ; \
+		$(MAKE) -C board TOPDIR="$(TOPDIR)" distclean ; \
 	fi
 	@rm -f Make.dep .depend
 

arch/arm/src/common/up_arch.h

@@ -84,7 +84,7 @@ static inline void putreg16(uint16 val, unsigned int addr)
 
 /* Most DM320 registers are 16-bits wide */
 
-#define getreg(a)   getreg16(1)
+#define getreg(a)   getreg16(a)
 #define putreg(v,a) putreg16(v,a)
 
 #endif

arch/arm/src/common/up_exit.c

@@ -58,17 +58,16 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Private Funtions
+ * Private Functions
  ****************************************************************************/
 
 /****************************************************************************
  * Name: _up_dumponexit
  *
  * Description:
- *   Dump the state of all tasks whenever on task exits.  This
- *   is debug instrumentation that was added to check file-
- *   related reference counting but could be useful again
- *   sometime in the future.
+ *   Dump the state of all tasks whenever on task exits.  This is debug
+ *   instrumentation that was added to check file-related reference counting
+ *   but could be useful again sometime in the future.
  *
  ****************************************************************************/
 
@@ -133,13 +132,15 @@ static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg)
  *
  * Description:
  *   This function causes the currently executing task to cease
- *   to exist.  This is a special case of task_delete().
+ *   to exist.  This is a special case of task_delete() where the task to
+ *   be deleted is the currently executing task.  It is more complex because
+ *   a context switch must be perform to the the next ready to run task.
  *
  ****************************************************************************/
 
 void _exit(int status)
 {
-  _TCB* tcb = (_TCB*)g_readytorun.head;
+  _TCB* tcb;
 
   /* Disable interrupts.  They will be restored when the next
    * task is started.
@@ -150,41 +151,13 @@ void _exit(int status)
   lldbg("TCB=%p exitting\n", tcb);
 
 #if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
-  dbg("Other tasks:\n");
+  lldbg("Other tasks:\n");
   sched_foreach(_up_dumponexit, NULL);
 #endif
 
-  /* Remove the tcb task from the ready-to-run list.  We can
-   * ignore the return value because we know that a context
-   * switch is needed.
-   */
+  /* Destroy the task at the head of the ready to run list. */
 
-  (void)sched_removereadytorun(tcb);
-
-  /* We are not in a bad stack-- the head of the ready to run task list
-   * does not correspond to the thread that is running.  Disabling pre-
-   * emption on this TCB should be enough to keep things stable.
-   */
-
-  sched_lock();
-
-  /* Move the TCB to the specified blocked task list and delete it */
-
-  sched_addblocked(tcb, TSTATE_TASK_INACTIVE);
-  task_delete(tcb->pid);
-
-  /* If there are any pending tasks, then add them to the g_readytorun
-   * task list now
-   */
-
-  if (g_pendingtasks.head)
-    {
-      (void)sched_mergepending();
-    }
-
-  /* Now calling sched_unlock() should have no effect */
-
-  sched_unlock();
+  (void)task_deletecurrent();
 
   /* Now, perform the context switch to the new ready-to-run task at the
    * head of the list.

arch/arm/src/common/up_internal.h

@@ -49,11 +49,11 @@
  * board bring-up and not part of normal platform configuration.
  */
 
-#undef  CONFIG_SUPPRESS_INTERRUPTS    /* Do not enable interrupts */
-#undef  CONFIG_SUPPRESS_TIMER_INTS    /* No timer */
-#undef  CONFIG_SUPPRESS_SERIAL_INTS   /* Console will poll */
-#undef  CONFIG_SUPPRESS_UART_CONFIG   /* Do not reconfig UART */
-#undef  CONFIG_DUMP_ON_EXIT           /* Dump task state on exit */
+#undef  CONFIG_SUPPRESS_INTERRUPTS    /* DEFINED: Do not enable interrupts */
+#undef  CONFIG_SUPPRESS_TIMER_INTS    /* DEFINED: No timer */
+#undef  CONFIG_SUPPRESS_SERIAL_INTS   /* DEFINED: Console will poll */
+#undef  CONFIG_SUPPRESS_UART_CONFIG   /* DEFINED: Do not reconfig UART */
+#undef  CONFIG_DUMP_ON_EXIT           /* DEFINED: Dump task state on exit */
 
 /****************************************************************************
  * Public Types

arch/arm/src/common/up_sigdeliver.c

@@ -1,7 +1,7 @@
-/************************************************************
+/****************************************************************************
  * common/up_sigdeliver.c
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,11 +31,11 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************/
+ ****************************************************************************/
 
 #include <nuttx/config.h>
 #include <sys/types.h>
@@ -47,23 +47,23 @@
 #include "up_internal.h"
 #include "up_arch.h"
 
-/************************************************************
+/****************************************************************************
  * Definitions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Private Data
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Private Functions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Public Funtions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: up_sigdeliver
  *
  * Description:
@@ -72,7 +72,7 @@
  *   with and forced to branch to this location with interrupts
  *   disabled.
  *
- ************************************************************/
+ ****************************************************************************/
 
 void up_sigdeliver(void)
 {
@@ -86,7 +86,7 @@ void up_sigdeliver(void)
    * the correct errno value (probably EINTR).
    */
 
-  int saved_errno = rtcb->errno;
+  int saved_errno = rtcb->pterrno;
 
   up_ledon(LED_SIGNAL);
 
@@ -125,7 +125,7 @@ void up_sigdeliver(void)
    */
 
   dbg("Resuming\n");
-  rtcb->errno = saved_errno;
+  rtcb->pterrno = saved_errno;
 
   /* Then restore the correct state for this thread of
    * execution.

arch/arm/src/dm320/dm320_uart.h

@@ -70,24 +70,28 @@
 #define UART_DTRR_DTR_MASK    0x00ff /* Data transmit/receive */
 
 /* UART BRSR register bit definitions */
-/* The UART clock is half of the ARM clock */
+/* The UART module is clocked by either the AHB clock or PLLIN / 16 */
 
-#define UART_CLK (DM320_ARM_CLOCK / 2)
+#ifdef CONFIG_DM320_UARTPPLIN
+#  define UART_REFCLK (27000000 / 16)
+#else
+#  define UART_REFCLK (DM320_AHB_CLOCK / 16)
+#endif
 
-/* And baud rate = UART_CLK / 16 / (VALUE+1) */
+/* And baud = UART_REFCLK / (brsr+1) */
 
-#define UART_BAUD_2400        ((uint16)(((UART_CLK / 16) / 2400  ) - 1))
-#define UART_BAUD_4800        ((uint16)(((UART_CLK / 16) / 4800  ) - 1))
-#define UART_BAUD_9600        ((uint16)(((UART_CLK / 16) / 9600  ) - 1))
-#define UART_BAUD_14400       ((uint16)(((UART_CLK / 16) / 14400 ) - 1))
-#define UART_BAUD_19200       ((uint16)(((UART_CLK / 16) / 19200 ) - 1))
-#define UART_BAUD_28800       ((uint16)(((UART_CLK / 16) / 28800 ) - 1))
-#define UART_BAUD_38400       ((uint16)(((UART_CLK / 16) / 38400 ) - 1))
-#define UART_BAUD_57600       ((uint16)(((UART_CLK / 16) / 57600 ) - 1))
-#define UART_BAUD_115200      ((uint16)(((UART_CLK / 16) / 115200) - 1))
-#define UART_BAUD_230400      ((uint16)(((UART_CLK / 16) / 230400) - 1))
-#define UART_BAUD_460800      ((uint16)(((UART_CLK / 16) / 460800) - 1))
-#define UART_BAUD_921600      ((uint16)(((UART_CLK / 16) / 921600) - 1))
+#define UART_BAUD_2400        ((uint16)((UART_REFCLK / 2400  ) - 1))
+#define UART_BAUD_4800        ((uint16)((UART_REFCLK / 4800  ) - 1))
+#define UART_BAUD_9600        ((uint16)((UART_REFCLK / 9600  ) - 1))
+#define UART_BAUD_14400       ((uint16)((UART_REFCLK / 14400 ) - 1))
+#define UART_BAUD_19200       ((uint16)((UART_REFCLK / 19200 ) - 1))
+#define UART_BAUD_28800       ((uint16)((UART_REFCLK / 28800 ) - 1))
+#define UART_BAUD_38400       ((uint16)((UART_REFCLK / 38400 ) - 1))
+#define UART_BAUD_57600       ((uint16)((UART_REFCLK / 57600 ) - 1))
+#define UART_BAUD_115200      ((uint16)((UART_REFCLK / 115200) - 1))
+#define UART_BAUD_230400      ((uint16)((UART_REFCLK / 230400) - 1))
+#define UART_BAUD_460800      ((uint16)((UART_REFCLK / 460800) - 1))
+#define UART_BAUD_921600      ((uint16)((UART_REFCLK / 921600) - 1))
 
 /* UART MSR register bit definitions */
 

arch/arm/src/lpc214x/lpc214x_lowputc.S

@@ -1,7 +1,7 @@
 /**************************************************************************
  * lpc214x/lpc214X_lowputc.S
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -92,7 +92,7 @@
 #  error "No CONFIG_UARTn_PARITY Setting"
 #endif
 
-#ifdef LPC214X_UART_2STOP != 0
+#if LPC214X_UART_2STOP != 0
 #  define LPC214X_LCR_STOP LPC214X_LCR_STOP_2
 #else
 #  define LPC214X_LCR_STOP LPC214X_LCR_STOP_1

arch/arm/src/lpc214x/lpc214x_serial.c

@@ -1,7 +1,7 @@
 /****************************************************************************
  * lpc214x/lpc214x_serial.c
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -82,15 +82,17 @@ struct up_dev_s
 
 static int     up_setup(struct uart_dev_s *dev);
 static void    up_shutdown(struct uart_dev_s *dev);
+static int     up_attach(struct uart_dev_s *dev);
+static void    up_detach(struct uart_dev_s *dev);
 static int     up_interrupt(int irq, void *context);
 static int     up_ioctl(struct file *filep, int cmd, unsigned long arg);
 static int     up_receive(struct uart_dev_s *dev, uint32 *status);
 static void    up_rxint(struct uart_dev_s *dev, boolean enable);
-static boolean up_rxfifonotempty(struct uart_dev_s *dev);
+static boolean up_rxavailable(struct uart_dev_s *dev);
 static void    up_send(struct uart_dev_s *dev, int ch);
 static void    up_txint(struct uart_dev_s *dev, boolean enable);
-static boolean up_txfifonotfull(struct uart_dev_s *dev);
-static boolean up_txfifoempty(struct uart_dev_s *dev);
+static boolean up_txready(struct uart_dev_s *dev);
+static boolean up_txempty(struct uart_dev_s *dev);
 
 /****************************************************************************
  * Private Variables
@@ -100,15 +102,16 @@ struct uart_ops_s g_uart_ops =
 {
   .setup          = up_setup,
   .shutdown       = up_shutdown,
-  .handler        = up_interrupt,
+  .attach         = up_attach,
+  .detach         = up_detach,
   .ioctl          = up_ioctl,
   .receive        = up_receive,
   .rxint          = up_rxint,
-  .rxfifonotempty = up_rxfifonotempty,
+  .rxavailable    = up_rxavailable,
   .send           = up_send,
   .txint          = up_txint,
-  .txfifonotfull  = up_txfifonotfull,
-  .txfifoempty    = up_txfifoempty,
+  .txready        = up_txready,
+  .txempty    = up_txempty,
 };
 
 /* I/O buffers */
@@ -124,6 +127,7 @@ static struct up_dev_s g_uart0priv =
 {
   .uartbase       = LPC214X_UART0_BASE,
   .baud           = CONFIG_UART0_BAUD,
+  .irq            = LPC214X_UART0_IRQ,
   .parity         = CONFIG_UART0_PARITY,
   .bits           = CONFIG_UART0_BITS,
   .stopbits2      = CONFIG_UART0_2STOP,
@@ -131,7 +135,6 @@ static struct up_dev_s g_uart0priv =
 
 static uart_dev_t g_uart0port =
 {
-  .irq      = LPC214X_UART0_IRQ,
   .recv     =
   {
     .size   = CONFIG_UART0_RXBUFSIZE,
@@ -152,6 +155,7 @@ static struct up_dev_s g_uart1priv =
 {
   .uartbase       = LPC214X_UART1_BASE,
   .baud           = CONFIG_UART1_BAUD,
+  .irq            = LPC214X_UART1_IRQ,
   .parity         = CONFIG_UART1_PARITY,
   .bits           = CONFIG_UART1_BITS,
   .stopbits2      = CONFIG_UART1_2STOP,
@@ -159,7 +163,6 @@ static struct up_dev_s g_uart1priv =
 
 static uart_dev_t g_uart1port =
 {
-  .irq      = LPC214X_UART1_IRQ,
   .recv     =
   {
     .size   = CONFIG_UART1_RXBUFSIZE,
@@ -234,10 +237,10 @@ static inline void up_restoreuartint(struct up_dev_s *priv, ubyte ier)
 }
 
 /****************************************************************************
- * Name: up_waittxfifonotfull
+ * Name: up_waittxready
  ****************************************************************************/
 
-static inline void up_waittxfifonotfull(struct up_dev_s *priv)
+static inline void up_waittxready(struct up_dev_s *priv)
 {
   int tmp;
 
@@ -283,7 +286,7 @@ static inline void up_enablebreaks(struct up_dev_s *priv, boolean enable)
 
 static int up_setup(struct uart_dev_s *dev)
 {
-#ifdef CONFIG_SUPPRESS_LPC214X_UART_CONFIG
+#ifndef CONFIG_SUPPRESS_LPC214X_UART_CONFIG
   struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
   uint16 baud;
   ubyte lcr;
@@ -299,11 +302,11 @@ static int up_setup(struct uart_dev_s *dev)
   /* Set up the IER */
 
   priv->ier = up_serialin(priv, LPC214X_UART_IER_OFFSET);
-  
+
   /* Set up the LCR */
-  
+
   lcr = 0;
-  
+
   if (priv->bits == 7)
     {
       lcr |= LPC214X_LCR_CHAR_7;
@@ -317,7 +320,7 @@ static int up_setup(struct uart_dev_s *dev)
     {
       lcr |= LPC214X_LCR_STOP_2;
     }
- 
+
   if (priv->parity == 1)
     {
       lcr |= LPC214X_LCR_PAR_ODD;
@@ -328,15 +331,15 @@ static int up_setup(struct uart_dev_s *dev)
     }
 
   /* Enter DLAB=1 */
-    
+
   up_serialout(priv, LPC214X_UART_LCR_OFFSET, (lcr | LPC214X_LCR_DLAB_ENABLE));
- 
+
   /* Set the BAUD divisor */
 
   baud = UART_BAUD(priv->baud);
   up_serialout(priv, LPC214X_UART_DLM_OFFSET, baud >> 8);
   up_serialout(priv, LPC214X_UART_DLL_OFFSET, baud & 0xff);
- 
+
   /* Clear DLAB */
 
  up_serialout(priv, LPC214X_UART_LCR_OFFSET, lcr);
@@ -359,6 +362,57 @@ static void up_shutdown(struct uart_dev_s *dev)
   up_disableuartint(priv, NULL);
 }
 
+/****************************************************************************
+ * Name: up_attach
+ *
+ * Description:
+ *   Configure the UART to operation in interrupt driven mode.  This method is
+ *   called when the serial port is opened.  Normally, this is just after the
+ *   the setup() method is called, however, the serial console may operate in
+ *   a non-interrupt driven mode during the boot phase.
+ *
+ *   RX and TX interrupts are not enabled when by the attach method (unless the
+ *   hardware supports multiple levels of interrupt enabling).  The RX and TX
+ *   interrupts are not enabled until the txint() and rxint() methods are called.
+ *
+ ****************************************************************************/
+
+static int up_attach(struct uart_dev_s *dev)
+{
+  struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
+  int ret;
+
+  /* Attach and enable the IRQ */
+
+  ret = irq_attach(priv->irq, up_interrupt);
+  if (ret == OK)
+    {
+       /* Enable the interrupt (RX and TX interrupts are still disabled
+        * in the UART
+        */
+
+       up_enable_irq(priv->irq);
+    }
+  return ret;
+}
+
+/****************************************************************************
+ * Name: up_detach
+ *
+ * Description:
+ *   Detach UART interrupts.  This method is called when the serial port is
+ *   closed normally just before the shutdown method is called.  The exception is
+ *   the serial console which is never shutdown.
+ *
+ ****************************************************************************/
+
+static void up_detach(struct uart_dev_s *dev)
+{
+  struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
+  up_disable_irq(priv->irq);
+  irq_detach(priv->irq);
+}
+
 /****************************************************************************
  * Name: up_interrupt
  *
@@ -379,11 +433,11 @@ static int up_interrupt(int irq, void *context)
   ubyte              status;
   int                passes;
 
-  if (g_uart1port.irq == irq)
+  if (g_uart1priv.irq == irq)
     {
       dev = &g_uart1port;
     }
-  else if (g_uart0port.irq == irq)
+  else if (g_uart0priv.irq == irq)
     {
       dev = &g_uart0port;
     }
@@ -548,14 +602,14 @@ static void up_rxint(struct uart_dev_s *dev, boolean enable)
 }
 
 /****************************************************************************
- * Name: up_rxfifonotempty
+ * Name: up_rxavailable
  *
  * Description:
  *   Return TRUE if the receive fifo is not empty
  *
  ****************************************************************************/
 
-static boolean up_rxfifonotempty(struct uart_dev_s *dev)
+static boolean up_rxavailable(struct uart_dev_s *dev)
 {
   struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
   return ((up_serialin(priv, LPC214X_UART_LSR_OFFSET) & LPC214X_LSR_RDR) != 0);
@@ -600,28 +654,28 @@ static void up_txint(struct uart_dev_s *dev, boolean enable)
 }
 
 /****************************************************************************
- * Name: up_txfifonotfull
+ * Name: up_txready
  *
  * Description:
  *   Return TRUE if the tranmsit fifo is not full
  *
  ****************************************************************************/
 
-static boolean up_txfifonotfull(struct uart_dev_s *dev)
+static boolean up_txready(struct uart_dev_s *dev)
 {
   struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
   return ((up_serialin(priv, LPC214X_UART_LSR_OFFSET) & LPC214X_LSR_THRE) != 0);
 }
 
 /****************************************************************************
- * Name: up_txfifoempty
+ * Name: up_txempty
  *
  * Description:
  *   Return TRUE if the transmit fifo is empty
  *
  ****************************************************************************/
 
-static boolean up_txfifoempty(struct uart_dev_s *dev)
+static boolean up_txempty(struct uart_dev_s *dev)
 {
   struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
   return ((up_serialin(priv, LPC214X_UART_LSR_OFFSET) & LPC214X_LSR_THRE) != 0);
@@ -692,7 +746,7 @@ int up_putc(int ch)
   ubyte  ier;
 
   up_disableuartint(priv, &ier);
-  up_waittxfifonotfull(priv);
+  up_waittxready(priv);
   up_serialout(priv, LPC214X_UART_THR_OFFSET, (ubyte)ch);
 
   /* Check for LF */
@@ -701,11 +755,11 @@ int up_putc(int ch)
     {
       /* Add CR */
 
-      up_waittxfifonotfull(priv);
+      up_waittxready(priv);
       up_serialout(priv, LPC214X_UART_THR_OFFSET, '\r');
     }
 
-  up_waittxfifonotfull(priv);
+  up_waittxready(priv);
   up_restoreuartint(priv, ier);
   return ch;
 }

arch/c5471/src/Makefile

@@ -1,7 +1,7 @@
-############################################################
-# Makefile
+############################################################################
+# arch/c5471/src/Makefile
 #
-#   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
 #    notice, this list of conditions and the following disclaimer in
 #    the documentation and/or other materials provided with the
 #    distribution.
-# 3. Neither the name Gregory Nutt nor the names of its contributors may be
+# 3. Neither the name NuttX nor the names of its contributors may be
 #    used to endorse or promote products derived from this software
 #    without specific prior written permission.
 #
@@ -31,11 +31,10 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 #
-############################################################
+############################################################################
 
 -include $(TOPDIR)/Make.defs
 
-MKDEP 		= $(TOPDIR)/tools/mkdeps.sh
 CFLAGS		+= -I$(TOPDIR)/sched
 
 ASRCS		= up_vectors.S up_saveusercontext.S up_fullcontextrestore.S
@@ -72,15 +71,14 @@ LIBGCC		= ${shell $(CC) -print-libgcc-file-name}
 all: up_head.o libarch$(LIBEXT)
 
 $(AOBJS) $(LINKOBJS): %.o: %.S
-	$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
+	$(call ASSEMBLE, $<, $@)
 
 $(COBJS): %.o: %.c
-	$(CC) -c $(CFLAGS) $< -o $@
+	$(call COMPILE, $<, $@)
 
 libarch$(LIBEXT): $(OBJS)
-	( for obj in $(OBJS) ; do \
-		$(AR) $@ $${obj} || \
-			{ echo "$(AR) $@ $obj FAILED!" ; exit 1 ; } ; \
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $@, $${obj}); \
 	done ; )
 
 board/libboard$(LIBEXT):
@@ -105,9 +103,9 @@ ifeq ($(CONFIG_RRLOAD_BINARY),y)
 endif
 
 .depend: Makefile $(SRCS)
-	$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
-	$(MAKE) -C board TOPDIR=$(TOPDIR) depend
-	touch $@
+	@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@$(MAKE) -C board TOPDIR=$(TOPDIR) depend
+	@touch $@
 
 depend: .depend
 
@@ -115,7 +113,8 @@ clean:
 	@if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR=$(TOPDIR) clean ; \
 	fi
-	rm -f libarch$(LIBEXT) *.o *~
+	@rm -f libarch$(LIBEXT) *~ .*.swp
+	$(call CLEAN)
 
 distclean: clean
 	@if [ -e board/Makefile ]; then \

arch/c5471/src/up_exit.c

@@ -1,7 +1,7 @@
-/************************************************************
+/****************************************************************************
  * up_exit.c
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,11 +31,11 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************/
+ ****************************************************************************/
 
 #include <nuttx/config.h>
 #include <sys/types.h>
@@ -49,28 +49,27 @@
 #include <nuttx/fs.h>
 #endif
 
-/************************************************************
+/****************************************************************************
  * Private Definitions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Private Data
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
- * Private Funtions
- ************************************************************/
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: _up_dumponexit
  *
  * Description:
- *   Dump the state of all tasks whenever on task exits.  This
- *   is debug instrumentation that was added to check file-
- *   related reference counting but could be useful again
- *   sometime in the future.
+ *   Dump the state of all tasks whenever on task exits.  This is debug
+ *   instrumentation that was added to check file-related reference counting
+ *   but could be useful again sometime in the future.
  *
- ************************************************************/
+ ****************************************************************************/
 
 #if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
 static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg)
@@ -113,23 +112,30 @@ static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg)
 }
 #endif
 
-/************************************************************
- * Public Funtions
- ************************************************************/
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: _exit
  *
  * Description:
  *   This function causes the currently executing task to cease
- *   to exist.  This is a special case of task_delete().
+ *   to exist.  This is a special case of task_delete() where the task to
+ *   be deleted is the currently executing task.  It is more complex because
+ *   a context switch must be perform to the the next ready to run task.
  *
- ************************************************************/
+ ****************************************************************************/
 
 void _exit(int status)
 {
-  _TCB* tcb = (_TCB*)g_readytorun.head;
-  irqstate_t flags = irqsave();
+  _TCB* tcb;
+
+  /* Disable interrupts.  They will be restored when the next
+   * task is started.
+   */
+
+  (void)irqsave();
 
   lldbg("TCB=%p exitting\n", tcb);
 
@@ -138,37 +144,9 @@ void _exit(int status)
   sched_foreach(_up_dumponexit, NULL);
 #endif
 
-  /* Remove the tcb task from the ready-to-run list.  We can
-   * ignore the return value because we know that a context
-   * switch is needed.
-   */
+  /* Destroy the task at the head of the ready to run list. */
 
-  (void)sched_removereadytorun(tcb);
-
-  /* We are not in a bad stack-- the head of the ready to run task list
-   * does not correspond to the thread that is running.  Disabling pre-
-   * emption on this TCB should be enough to keep things stable.
-   */
-
-  sched_lock();
-
-  /* Move the TCB to the specified blocked task list and delete it */
-
-  sched_addblocked(tcb, TSTATE_TASK_INACTIVE);
-  task_delete(tcb->pid);
-
-  /* If there are any pending tasks, then add them to the g_readytorun
-   * task list now
-   */
-
-  if (g_pendingtasks.head)
-    {
-      (void)sched_mergepending();
-    }
-
-  /* Now calling sched_unlock() should have no effect */
-
-  sched_unlock();
+  (void)task_deletecurrent();
 
   /* Now, perform the context switch to the new ready-to-run task at the
    * head of the list.

arch/c5471/src/up_internal.h

@@ -60,7 +60,7 @@
 #undef  CONFIG_SUPPRESS_INTERRUPTS    /* Do not enable interrupts */
 #undef  CONFIG_SUPPRESS_TIMER_INTS    /* No timer */
 #undef  CONFIG_SUPPRESS_SERIAL_INTS   /* Console will poll */
-#undef  CONFIG_SUPPRESS_UART_CONFIG   /* Do not reconfig UART */
+#define CONFIG_SUPPRESS_UART_CONFIG 1 /* Do not reconfig UART */
 #undef  CONFIG_DUMP_ON_EXIT           /* Dump task state on exit */
 
 /************************************************************

arch/dm320/src/Makefile

@@ -1,7 +1,7 @@
-############################################################
-# Makefile
+############################################################################
+# arch/dm320/src/Makefile
 #
-#   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
 #    notice, this list of conditions and the following disclaimer in
 #    the documentation and/or other materials provided with the
 #    distribution.
-# 3. Neither the name Gregory Nutt nor the names of its contributors may be
+# 3. Neither the name NuttX nor the names of its contributors may be
 #    used to endorse or promote products derived from this software
 #    without specific prior written permission.
 #
@@ -31,11 +31,10 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 #
-############################################################
+############################################################################
 
 -include $(TOPDIR)/Make.defs
 
-MKDEP 		= $(TOPDIR)/tools/mkdeps.sh
 CFLAGS		+= -I$(TOPDIR)/sched
 
 ASRCS		= up_vectors.S up_saveusercontext.S up_fullcontextrestore.S \
@@ -70,15 +69,14 @@ LIBGCC		= ${shell $(CC) -print-libgcc-file-name}
 all: up_head.o libarch$(LIBEXT)
 
 $(AOBJS) $(LINKOBJS): %.o: %.S
-	$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
+	$(call ASSEMBLE, $<, $@)
 
 $(COBJS): %.o: %.c
-	$(CC) -c $(CFLAGS) $< -o $@
+	$(call COMPILE, $<, $@)
 
 libarch$(LIBEXT): $(OBJS)
-	( for obj in $(OBJS) ; do \
-		$(AR) $@ $${obj} || \
-			{ echo "$(AR) $@ $obj FAILED!" ; exit 1 ; } ; \
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $@, $${obj}); \
 	done ; )
 
 board/libboard$(LIBEXT):
@@ -106,8 +104,8 @@ endif
 	@if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR=$(TOPDIR) depend ; \
 	if
-	$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
-	touch $@
+	@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
 
 depend: .depend
 
@@ -115,12 +113,13 @@ clean:
 	@if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR=$(TOPDIR) clean ; \
 	fi
-	rm -f libarch$(LIBEXT) *.o *~
+	@rm -f libarch$(LIBEXT) *~ .*.swp
+	$(call CLEAN)
 
 distclean: clean
 	@if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR=$(TOPDIR) distclean ; \
 	fi
-	rm -f Make.dep .depend
+	@rm -f Make.dep .depend
 
 -include Make.dep

arch/dm320/src/up_exit.c

@@ -1,7 +1,7 @@
-/************************************************************
+/****************************************************************************
  * up_exit.c
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,11 +31,11 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************/
+ ****************************************************************************/
 
 #include <nuttx/config.h>
 #include <sys/types.h>
@@ -49,28 +49,27 @@
 #include <nuttx/fs.h>
 #endif
 
-/************************************************************
+/****************************************************************************
  * Private Definitions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Private Data
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
- * Private Funtions
- ************************************************************/
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: _up_dumponexit
  *
  * Description:
- *   Dump the state of all tasks whenever on task exits.  This
- *   is debug instrumentation that was added to check file-
- *   related reference counting but could be useful again
- *   sometime in the future.
+ *   Dump the state of all tasks whenever on task exits.  This is debug
+ *   instrumentation that was added to check file-related reference counting
+ *   but could be useful again sometime in the future.
  *
- ************************************************************/
+ ****************************************************************************/
 
 #if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
 static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg)
@@ -112,22 +111,24 @@ static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg)
 }
 #endif
 
-/************************************************************
- * Public Funtions
- ************************************************************/
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: _exit
  *
  * Description:
  *   This function causes the currently executing task to cease
- *   to exist.  This is a special case of task_delete().
+ *   to exist.  This is a special case of task_delete() where the task to
+ *   be deleted is the currently executing task.  It is more complex because
+ *   a context switch must be perform to the the next ready to run task.
  *
- ************************************************************/
+ ****************************************************************************/
 
 void _exit(int status)
 {
-  _TCB* tcb = (_TCB*)g_readytorun.head;
+  _TCB* tcb;
 
   /* Disable interrupts.  They will be restored when the next
    * task is started.
@@ -138,41 +139,13 @@ void _exit(int status)
   lldbg("TCB=%p exitting\n", tcb);
 
 #if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
-  dbg("Other tasks:\n");
+  lldbg("Other tasks:\n");
   sched_foreach(_up_dumponexit, NULL);
 #endif
 
-  /* Remove the tcb task from the ready-to-run list.  We can
-   * ignore the return value because we know that a context
-   * switch is needed.
-   */
+  /* Destroy the task at the head of the ready to run list. */
 
-  (void)sched_removereadytorun(tcb);
-
-  /* We are not in a bad stack-- the head of the ready to run task list
-   * does not correspond to the thread that is running.  Disabling pre-
-   * emption on this TCB should be enough to keep things stable.
-   */
-
-  sched_lock();
-
-  /* Move the TCB to the specified blocked task list and delete it */
-
-  sched_addblocked(tcb, TSTATE_TASK_INACTIVE);
-  task_delete(tcb->pid);
-
-  /* If there are any pending tasks, then add them to the g_readytorun
-   * task list now
-   */
-
-  if (g_pendingtasks.head)
-    {
-      (void)sched_mergepending();
-    }
-
-  /* Now calling sched_unlock() should have no effect */
-
-  sched_unlock();
+  (void)task_deletecurrent();
 
   /* Now, perform the context switch to the new ready-to-run task at the
    * head of the list.

arch/dm320/src/up_internal.h

@@ -52,7 +52,7 @@
 #undef  CONFIG_SUPPRESS_INTERRUPTS    /* Do not enable interrupts */
 #undef  CONFIG_SUPPRESS_TIMER_INTS    /* No timer */
 #undef  CONFIG_SUPPRESS_SERIAL_INTS   /* Console will poll */
-#undef  CONFIG_SUPPRESS_UART_CONFIG   /* Do not reconfig UART */
+#define CONFIG_SUPPRESS_UART_CONFIG 1 /* Do not reconfig UART */
 #define CONFIG_DUMP_ON_EXIT         1 /* Dump task state on exit */
 
 /************************************************************

arch/pjrc-8051/src/Makefile

@@ -1,7 +1,7 @@
-############################################################
-# Makefile
+############################################################################
+# arch/pjrc-8051/src/Makefile
 #
-#   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
 #    notice, this list of conditions and the following disclaimer in
 #    the documentation and/or other materials provided with the
 #    distribution.
-# 3. Neither the name Gregory Nutt nor the names of its contributors may be
+# 3. Neither the name NuttX nor the names of its contributors may be
 #    used to endorse or promote products derived from this software
 #    without specific prior written permission.
 #
@@ -31,11 +31,10 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 #
-############################################################
+############################################################################
 
 -include $(TOPDIR)/Make.defs
 
-MKDEP 		= $(TOPDIR)/tools/mkdeps.sh
 CFLAGS		+= -I$(TOPDIR)/sched
 ASFLAGS		= -x -j -g -l -s -p
 CPPFLAGS	= $(ARCHINCLUDES) $(ARCHDEFINES) -D__ASSEMBLY__
@@ -109,13 +108,13 @@ STACK_BASE	= ${shell \
 all: up_head$(OBJEXT) libarch$(LIBEXT)
 
 $(ASRCS) $(LINKASRCS): %$(ASMEXT): %.S
-	$(CPP) -P $(CPPFLAGS) -D__ASSEMBLY__ $< -o $@
+	$(CPP) -P $(CPPFLAGS) $< -o $@
 
 $(AOBJS) $(LINKOBJS): $(ASRCS) $(LINKASRCS)
-	$(AS) $(ASFLAGS) $<
+	$(call ASSEMBLE, $<, $@)
 
 $(COBJS) $(TESTOBJS): %$(OBJEXT): %.c
-	$(CC) -c $(CFLAGS) $< -o $@
+	$(call COMPILE, $<, $@)
 
 # Create a header file that contains addressing information needed by the code
 
@@ -148,8 +147,7 @@ up_mem.h: pass1.mem
 
 libarch$(LIBEXT): up_mem.h $(OBJS)
 	@( for obj in $(OBJS) ; do \
-		$(AR) $@ $${obj} || \
-			{ echo "$(AR) $@ $${obj} FAILED!" ; exit 1 ; } ; \
+		$(call ARCHIVE, $@, $${obj}); \
 	done ; )
 
 # This is a kludge to work around some conflicting symbols in libsdcc.liXqueb
@@ -172,19 +170,21 @@ board/libboard$(LIBEXT):
 # This target builds the final executable
 
 pass1.ihx: up_mem.h $(SDCCLIBDIR)/libmysdcc.lib $(LINKOBJS) board/libboard$(LIBEXT)
-	$(CC) $(LDFLAGS) $(LDPATHES) -L$(BOARDDIR) $(SDCCPATH) $(LINKOBJS) \
+	@echo "LD:  $@"
+	@$(CC) $(LDFLAGS) $(LDPATHES) -L$(BOARDDIR) $(SDCCPATH) $(LINKOBJS) \
 		$(LDLIBS) -llibboard$(LIBEXT) $(SDCCLIBS) -o $@
 	@rm -f up_mem.h
 	@rm -f up_allocateheap$(OBJEXT) libarch$(LIBEXT)
 	@$(MAKE) TOPDIR=$(TOPDIR) libarch$(LIBEXT)
 
 nuttx.ihx: up_mem.h $(SDCCLIBDIR)/libmysdcc.lib $(LINKOBJS)
-	$(CC) $(LDFLAGS) $(LDPATHES) -L$(BOARDDIR) $(SDCCPATH) $(LINKOBJS) \
+	@echo "LD:  $@"
+	@$(CC) $(LDFLAGS) $(LDPATHES) -L$(BOARDDIR) $(SDCCPATH) $(LINKOBJS) \
 		$(LDLIBS) -llibboard$(LIBEXT) $(SDCCLIBS) -o $@
 
 nuttx$(EXEEXT): pass1.ihx nuttx.ihx
 	@rm -f pass1.*
-	packihx nuttx.ihx > $(TOPDIR)/nuttx$(EXEEXT)
+	@packihx nuttx.ihx > $(TOPDIR)/nuttx$(EXEEXT)
 	@cp -f nuttx.map $(TOPDIR)/.
 
 # This target builds a test program to verify interrupt context switching.  irqtest is
@@ -202,8 +202,8 @@ irqtest:
 	@if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR=$(TOPDIR) depend ; \
 	fi	
-	$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
-	touch $@
+	@$(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
 
 depend: .depend
 
@@ -211,9 +211,8 @@ clean:
 	@if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR=$(TOPDIR) clean ; \
 	fi
-	rm -f libarch$(LIBEXT) up_mem.h
-	rm -f *.asm *.rel *.lst *.rst *.sym *.adb *.lnk *.map *.mem *.ihx *.hex *~
-	if [ ! -z "$(OBJEXT)" ]; then rm -f *$(OBJEXT); fi
+	@rm -f libarch$(LIBEXT) up_mem.h *~ .*.swp
+	$(call CLEAN)
 
 distclean: clean
 	@if [ -e board/Makefile ]; then \

arch/pjrc-8051/src/up_exit.c

@@ -1,7 +1,7 @@
-/************************************************************
+/****************************************************************************
  * up_exit.c
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,11 +31,11 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************/
+ ****************************************************************************/
 
 #include <nuttx/config.h>
 #include <sys/types.h>
@@ -46,34 +46,36 @@
 #include "os_internal.h"
 #include "up_internal.h"
 
-/************************************************************
+/****************************************************************************
  * Private Definitions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Private Data
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
- * Private Funtions
- ************************************************************/
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
 
-/************************************************************
- * Public Funtions
- ************************************************************/
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: _exit
  *
  * Description:
  *   This function causes the currently executing task to cease
- *   to exist.  This is a special case of task_delete().
+ *   to exist.  This is a special case of task_delete() where the task to
+ *   be deleted is the currently executing task.  It is more complex because
+ *   a context switch must be perform to the the next ready to run task.
  *
- ************************************************************/
+ ****************************************************************************/
 
 void _exit(int status)
 {
-  FAR _TCB* tcb = (FAR _TCB*)g_readytorun.head;
+  FAR _TCB* tcb;
 
   dbg("TCB=%p exitting\n", tcb);
 
@@ -83,37 +85,9 @@ void _exit(int status)
 
   EA = 0;
 
-  /* Remove the tcb task from the ready-to-run list.  We can
-   * ignore the return value because we know that a context
-   * switch is needed.
-   */
+  /* Destroy the task at the head of the ready to run list. */
 
-  (void)sched_removereadytorun(tcb);
-
-  /* We are not in a bad stack-- the head of the ready to run task list
-   * does not correspond to the thread that is running.  Disabling pre-
-   * emption on this TCB should be enough to keep things stable.
-   */
-
-  sched_lock();
-
-  /* Move the TCB to the specified blocked task list and delete it */
-
-  sched_addblocked(tcb, TSTATE_TASK_INACTIVE);
-  task_delete(tcb->pid);
-
-  /* If there are any pending tasks, then add them to the g_readytorun
-   * task list now
-   */
-
-  if (g_pendingtasks.head)
-    {
-      (void)sched_mergepending();
-    }
-
-  /* Now calling sched_unlock() should have no effect */
-
-  sched_unlock();
+  (void)task_deletecurrent();
 
   /* Now, perform the context switch to the new ready-to-run task at the
    * head of the list.

arch/sim/src/Makefile

@@ -1,7 +1,7 @@
-############################################################
-# Makefile
+############################################################################
+# arch/sim/src/Makefile
 #
-#   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
 #    notice, this list of conditions and the following disclaimer in
 #    the documentation and/or other materials provided with the
 #    distribution.
-# 3. Neither the name Gregory Nutt nor the names of its contributors may be
+# 3. Neither the name NuttX nor the names of its contributors may be
 #    used to endorse or promote products derived from this software
 #    without specific prior written permission.
 #
@@ -31,11 +31,10 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 #
-############################################################
+############################################################################
 
 -include $(TOPDIR)/Make.defs
 
-MKDEP 		= $(TOPDIR)/tools/mkdeps.sh
 CFLAGS		+= -I$(TOPDIR)/sched
 
 ASRCS		= up_setjmp.S
@@ -61,9 +60,9 @@ SRCS		= $(ASRCS) $(CSRCS) $(SPECSRCS)
 OBJS		= $(AOBJS) $(COBJS) $(SPECOBJS)
 
 LDFLAGS		= $(ARCHSCRIPT)
-EXTRA_LIBS	= -lc
+STDLIBS	= -lc
 ifeq ($(CONFIG_FS_FAT),y)
-EXTRA_LIBS	+= -lz
+STDLIBS	+= -lz
 endif
 
 LINKOBJS	= up_head$(OBJEXT)
@@ -74,23 +73,23 @@ LDLIBS		= $(patsubst lib%,-l%,$(basename $(notdir $(LINKLIBS))))
 all: up_head$(OBJEXT) libarch$(LIBEXT)
 
 $(AOBJS): %$(OBJEXT): %.S
-	$(CC) -c $(CFLAGS) -D__ASSEMBLY__ $< -o $@
+	$(call ASSEMBLE, $<, $@)
 
 $(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
-	$(CC) -c $(CFLAGS) $< -o $@
+	$(call COMPILE, $<, $@)
 
 $(SPECOBJS): %$(OBJEXT): %.c
 	$(CC) -c $(HOSTCFLAGS) $< -o $@
 
 libarch$(LIBEXT): $(OBJS)
 	@( for obj in $(OBJS) ; do \
-		$(AR) $@ $${obj} || \
-			{ echo "$(AR) $@ $obj FAILED!" ; exit 1 ; } ; \
+		$(call ARCHIVE, $@, $${obj}); \
 	done ; )
 
 nuttx$(EXEEXT): $(LINKOBJS)
-	$(CC) $(LDFLAGS) $(LDPATHES) -o $(TOPDIR)/$@ $(LINKOBJS) \
-		-Wl,--start-group $(LDLIBS) -Wl,--end-group $(EXTRA_LIBS)
+	@echo "LD:  nuttx$(EXEEXT)"
+	@$(CC) $(LDFLAGS) $(LDPATHES) -o $(TOPDIR)/$@ $(LINKOBJS) \
+		-Wl,--start-group $(LDLIBS) -Wl,--end-group $(STDLIBS) $(EXTRA_LIBS)
 	@$(NM) $(TOPDIR)/$@ | \
 		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
 		sort > $(TOPDIR)/System.map
@@ -102,8 +101,8 @@ nuttx$(EXEEXT): $(LINKOBJS)
 depend: .depend
 
 clean:
-	@rm -f libarch$(LIBEXT) *~
-	@if [ ! -z "$(OBJEXT)" ]; then rm -f *$(OBJEXT); fi
+	@rm -f libarch$(LIBEXT) *~ .*.swp
+	$(call CLEAN)
 
 distclean: clean
 	@rm -f Make.dep .depend

arch/sim/src/up_exit.c

@@ -1,7 +1,7 @@
-/************************************************************
+/****************************************************************************
  * up_exit.c
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,11 +31,11 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************/
+ ****************************************************************************/
 
 #include <nuttx/config.h>
 #include <sys/types.h>
@@ -45,68 +45,42 @@
 #include "os_internal.h"
 #include "up_internal.h"
 
-/************************************************************
+/****************************************************************************
  * Private Definitions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Private Data
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
- * Private Funtions
- ************************************************************/
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
 
-/************************************************************
- * Public Funtions
- ************************************************************/
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: _exit
  *
  * Description:
  *   This function causes the currently executing task to cease
- *   to exist.  This is a special case of task_delete().
+ *   to exist.  This is a special case of task_delete() where the task to
+ *   be deleted is the currently executing task.  It is more complex because
+ *   a context switch must be perform to the the next ready to run task.
  *
- ************************************************************/
+ ****************************************************************************/
 
 void _exit(int status)
 {
-  _TCB* tcb = (_TCB*)g_readytorun.head;
+  _TCB* tcb;
 
   sdbg("TCB=%p exitting\n", tcb);
 
-  /* Remove the tcb task from the ready-to-run list.  We can
-   * ignore the return value because we know that a context
-   * switch is needed.
-   */
+  /* Destroy the task at the head of the ready to run list. */
 
-  (void)sched_removereadytorun(tcb);
-
-  /* We are not in a bad stack-- the head of the ready to run task list
-   * does not correspond to the thread that is running.  Disabling pre-
-   * emption on this TCB should be enough to keep things stable.
-   */
-
-  sched_lock();
-
-  /* Move the TCB to the specified blocked task list and delete it */
-
-  sched_addblocked(tcb, TSTATE_TASK_INACTIVE);
-  task_delete(tcb->pid);
-
-  /* If there are any pending tasks, then add them to the g_readytorun
-   * task list now.
-   */
-
-  if (g_pendingtasks.head)
-    {
-      (void)sched_mergepending();
-    }
-
-  /* Now calling sched_unlock() should have no effect */
-
-  sched_unlock();
+  (void)task_deletecurrent();
 
   /* Now, perform the context switch to the new ready-to-run task at the
    * head of the list.

arch/z16/include/arch.h

@@ -0,0 +1,80 @@
+/****************************************************************************
+ * arch/arch.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the nameNuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through nuttx/arch.h
+ */
+
+#ifndef __ARCH_ARCH_H
+#define __ARCH_ARCH_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Inline functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ARCH_ARCH_H */
+

arch/z16/include/irq.h

@@ -0,0 +1,81 @@
+/****************************************************************************
+ * arch/irq.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through nuttx/irq.h
+ */
+
+#ifndef __ARCH_IRQ_H
+#define __ARCH_IRQ_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/irq.h>
+#include <arch/chip/irq.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif /* __ARCH_IRQ_H */
+

arch/z16/include/limits.h

@@ -0,0 +1,73 @@
+/****************************************************************************
+ * arch/limits.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_LIMITS_H
+#define __ARCH_LIMITS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define CHAR_BIT       8
+#define SCHAR_MIN	0x80
+#define SCHAR_MAX	0x7f
+#define UCHAR_MAX	0xff
+
+/* These could be different on machines where char is unsigned */
+
+#define CHAR_MIN	SCHAR_MIN
+#define CHAR_MAX	SCHAR_MAX
+
+#define SHRT_MIN	0x8000
+#define SHRT_MAX	0x7fff
+#define USHRT_MAX	0xffff
+
+#define INT_MIN     0x80000000
+#define INT_MAX     0x7fffffff
+#define UINT_MAX	0xffffffff
+
+#define LONG_MAX	0x80000000
+#define LONG_MIN	0x7fffffff
+#define ULONG_MAX	0xffffffff
+
+#define LLONG_MAX	0x80000000
+#define LLONG_MIN	0x7fffffff
+#define ULLONG_MAX	0xffffffff
+
+#endif /* __ARCH_LIMITS_H */

arch/z16/include/serial.h

@@ -0,0 +1,55 @@
+/************************************************************
+ * arch/serial.h
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************/
+
+#ifndef __ARCH_SERIAL_H
+#define __ARCH_SERIAL_H
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/************************************************************
+ * Public Data
+ ************************************************************/
+
+/************************************************************
+ * Public Functions
+ ************************************************************/
+
+#endif /* __ARCH_SERIAL_H */

arch/z16/include/types.h

@@ -0,0 +1,80 @@
+/****************************************************************************
+ * arch/types.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through sys/types.h
+ */
+
+#ifndef __ARCH_TYPES_H
+#define __ARCH_TYPES_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Type Declarations
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* These are the sizes of the standard GNU types */
+
+typedef char sbyte;
+typedef unsigned char ubyte;
+typedef unsigned char uint8;
+typedef unsigned char boolean;
+typedef short sint16;
+typedef unsigned short uint16;
+typedef int sint32;
+typedef unsigned int uint32;
+
+/* This is the size of the interrupt state save returned by
+ * irqsave()
+ */
+
+typedef unsigned short irqstate_t;
+
+#endif /* __ASSEMBLY__ */
+
+/****************************************************************************
+ * Global Function Prototypes
+ ****************************************************************************/
+
+#endif /* __ARCH_TYPES_H */

arch/z16/include/z16f/arch.h

@@ -0,0 +1,77 @@
+/****************************************************************************
+ * arch/z26f/arch.h
+ * arch/chip/arch.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through nuttx/arch.h (via arch/arch.h)
+ */
+
+#ifndef __ARCH_Z16F_ARCH_H
+#define __ARCH_Z16F_ARCH_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ARCH_Z16F_ARCH_H */
+

arch/z16/include/z16f/irq.h

@@ -0,0 +1,245 @@
+/****************************************************************************
+ * arch/z16f/irq.h
+ * arch/chip/irq.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather,
+ * only indirectly through nuttx/irq.h (via arch/irq.h)
+ */
+
+#ifndef __ARCH_Z16F_IRQ_H
+#define __ARCH_Z16F_IRQ_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Interrupt Vectors (excluding reset and sysexec which are handled differently) */
+
+#define Z16F_IRQ_IRQ0     ( 0) /* First of 8 IRQs controlled by IRQ0 registers */
+#define Z16F_IRQ_ADC      ( 0) /*   Vector: 0x2C IRQ0.0 ADC */
+#define Z16F_IRQ_SPI      ( 1) /*   Vector: 0x28 IRQ0.1 SPI */
+#define Z16F_IRQ_I2C      ( 2) /*   Vector: 0x24 IRQ0.2 I2C */
+#define Z16F_IRQ_UART0TX  ( 3) /*   Vector: 0x20 IRQ0.3 UART0 TX */
+#define Z16F_IRQ_UART0RX  ( 4) /*   Vector: 0x1C IRQ0.4 UART0 RX */
+#define Z16F_IRQ_TIMER0   ( 5) /*   Vector: 0x18 IRQ0.5 Timer 0 */
+#define Z16F_IRQ_TIMER1   ( 6) /*   Vector: 0x14 IRQ0.6 Timer 1 */
+#define Z16F_IRQ_TIMER2   ( 7) /*   Vector: 0x10 IRQ0.7 Timer 2 */
+
+#define Z16F_IRQ_IRQ1     ( 8) /* First of 8 IRQs controlled by IRQ1 registers */
+#define Z16F_IRQ_P0AD     ( 8) /*   Vector: 0x4C IRQ1.0 Port A/D0, rising/falling edge */
+#define Z16F_IRQ_P1AD     ( 9) /*   Vector: 0x48 IRQ1.1 Port A/D1, rising/falling edge */
+#define Z16F_IRQ_P2AD     (10) /*   Vector: 0x44 IRQ1.2 Port A/D2, rising/falling edge */
+#define Z16F_IRQ_P3AD     (11) /*   Vector: 0x40 IRQ1.3 Port A/D3, rising/falling edge */
+#define Z16F_IRQ_P4AD     (12) /*   Vector: 0x3C IRQ1.4 Port A/D4, rising/falling edge */
+#define Z16F_IRQ_P5AD     (13) /*   Vector: 0x38 IRQ1.5 Port A/D5, rising/falling edge */
+#define Z16F_IRQ_P6AD     (14) /*   Vector: 0x34 IRQ1.6 Port A/D6, rising/falling edge */
+#define Z16F_IRQ_P7AD     (15) /*   Vector: 0x30 IRQ1.7 Port A/D7, rising/falling edge */
+
+#define Z16F_IRQ_IRQ2     (16) /* First of 8 IRQs controlled by IRQ2 registers */
+#define Z16F_IRQ_C0       (16) /*   Vector: IRQ2.0 0x6C Port C0, both edges DMA0 */
+#define Z16F_IRQ_C1       (17) /*   Vector: IRQ2.1 0x68 Port C1, both edges DMA1 */
+#define Z16F_IRQ_C2       (18) /*   Vector: IRQ2.2 0x64 Port C2, both edges DMA2 */
+#define Z16F_IRQ_C3       (19) /*   Vector: IRQ2.3 0x60 Port C3, both edges DMA3 */
+#define Z16F_IRQ_PWMFAULT (20) /*   Vector: IRQ2.4 0x5C PWM Fault */
+#define Z16F_IRQ_UART1TX  (21) /*   Vector: IRQ2.5 0x58 UART1 TX */
+#define Z16F_IRQ_UART1RX  (22) /*   Vector: IRQ2.6 0x54 UART1 RX */
+#define Z16F_IRQ_PWMTIMER (23) /*   Vector: IRQ2.7 0x50 PWM Timer */
+
+#define Z16F_IRQ_SYSTIMER  Z16F_IRQ_TIMER0
+#define NR_IRQS           (24)
+
+/* These macros will map an IRQ to a register bit position */
+
+#define Z16F_IRQ0_BIT(i) (1 << ((i)-Z16F_IRQ_IRQ0))
+#define Z16F_IRQ1_BIT(i) (1 << ((i)-Z16F_IRQ_IRQ1))
+#define Z16F_IRQ2_BIT(i) (1 << ((i)-Z16F_IRQ_IRQ2))
+
+/* IRQ Stack Frame Format
+ *
+ * This stack frame is created on each interrupt.  These registers are stored
+ * in the TCB to many context switches.
+ *
+ * The following represent all of the "static" registers r8-r15.  These
+ * are registers that whose value must be retained across function calls.
+ * These registers must be saved bothby interrupt handling context switch
+ * switch logic and also by user-initiated context switches.
+ *
+ * Registers are saved in the order consistent with pushmho <r8-r15>,
+ * that is with r15 pushed first and r8 push last.  Since the z16f has
+ * a "push-down" stack, the registers will be "in order" in memory.
+ */
+
+#define REG_R8              ( 0) /* 32-bits: R8 */
+#define REG_R9              ( 2) /* 32-bits: R9 */
+#define REG_R10             ( 4) /* 32-bits: R10 */
+#define REG_R11             ( 6) /* 32-bits: R11 */
+#define REG_R12             ( 8) /* 32-bits: R12 */
+#define REG_R13             (10) /* 32-bits: R13 */
+
+/* The frame pointer and the SP at the point of task resumption must
+ * always be saved.
+ */
+
+#define REG_R14             (12) /* 32-bits: R14 = fp */
+#define REG_FP              REG_R14
+#define REG_R15             (14) /* 32-bits: R15 = sp */
+#define REG_SP              REG_R15
+
+/* The following represent all of the "volatile" registers r0-r7.  These
+ * are registers that whose value need not be retained across function
+ * calls.  These registers must be saved by interrupt handling context
+ * switch logic but not by user-initiated context switches.
+ *
+ * Registers are saved in the order consistent with pushmlo <r0-r7>,
+ * that is with r7 pushed first and r0 push last.  Since the z16f has
+ * a "push-down" stack, the registers will be "in order" in memory.
+ */
+
+#define REG_R0              (16) /* 32-bits: R0 */
+#define REG_R1              (18) /* 32-bits: R1 */
+#define REG_R2              (20) /* 32-bits: R2 */
+#define REG_R3              (22) /* 32-bits: R3 */
+#define REG_R4              (24) /* 32-bits: R4 */
+#define REG_R5              (26) /* 32-bits: R5 */
+#define REG_R6              (28) /* 32-bits: R6 */
+#define REG_R7              (30) /* 32-bits: R7 */
+
+/* The following two offsets represent the state of the stack on entry
+ * into the interrupt handler:
+ *
+ * TOS[0] = PC[31:24]
+ * TOS[1] = PC[23:16]
+ * TOS[2] = PC[15:8]
+ * TOS[3] = PC[7:0]
+ * TOS[4] = 0
+ * TOS[5] = flags
+ */
+
+#define REG_PC              (32) /* 32-bits: Return PC */
+#define REG_FLAGS           (34) /* 16-bits: Flags register (with 0x00 padding) */
+
+#define XCPTCONTEXT_REGS    (35)
+#define XCPTCONTEXT_SIZE    (2 * XCPTCONTEXT_REGS)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* This is the the type of the register save array */
+
+typedef uint16 chipreg_t;
+
+/* This struct defines the way the registers are stored. */
+
+struct xcptcontext
+{
+  /* Register save area */
+
+  uint16 regs[XCPTCONTEXT_REGS];
+
+  /* The following function pointer is non-zero if there
+   * are pending signals to be processed.
+   */
+
+#ifndef CONFIG_DISABLE_SIGNALS
+  CODE void *sigdeliver; /* Actual type is sig_deliver_t */
+
+  /* The following retains that state during signal execution */
+
+  uint32 saved_pc;	/* Saved return address */
+  uint16 saved_i;	/* Saved interrupt state */
+#endif
+};
+#endif
+
+/* The ZDS-II provides built-in operations to test & disable and to restore
+ * the interrupt state.
+ *
+ * irqstate_t irqsave(void);
+ * void irqrestore(irqstate_t flags);
+ */
+
+#ifdef __ZILOG__
+#  define irqsave()     TDI()
+#  define irqrestore(f) RI(f)
+#endif
+
+/****************************************************************************
+ * Inline functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* ZDS-II intrinsic functions (normally declared in zneo.h) */
+
+EXTERN intrinsic void EI(void);
+EXTERN intrinsic void DI(void);
+EXTERN intrinsic void RI(unsigned short);
+EXTERN intrinsic SET_VECTOR(int,void (* func) (void));
+EXTERN intrinsic unsigned short TDI(void);
+
+#ifndef __ZILOG__
+EXTERN irqstate_t irqsave(void);
+EXTERN void       irqrestore(irqstate_t flags);
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif /* __ARCH_Z16F_IRQ_H */
+

arch/z16/src/Makefile

@@ -0,0 +1,146 @@
+############################################################################
+# arch/z16/src/Makefile
+#
+#   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+-include chip/Make.defs
+
+COMPILER	= ${shell basename $(CC)}
+ARCHSRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ifeq ($(COMPILER),zneocc.exe)
+WARCHSRCDIR	= ${shell cygpath -w $(ARCHSRCDIR)}
+USRINCLUDES	= -usrinc:'.;$(WTOPDIR)\sched;$(WARCHSRCDIR);$(WARCHSRCDIR)\common'
+else
+WARCHSRCDIR	= $(ARCHSRCDIR)
+USRINCLUDES	= -I$(TOPDIR)/sched -I$(ARCHSRCDIR) -I$(ARCHSRCDIR)/common
+endif
+INCLUDES	= $(ARCHSTDINCLUDES) $(USRINCLUDES)
+CFLAGS		= $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(INCLUDES) $(ARCHDEFINES)
+CPPFLAGS	+= -I$(ARCHSRCDIR)
+ifeq ($(COMPILER),zneocc.exe)
+LDFLAGS 	= @"${shell cygpath -w $(ARCHSRCDIR)/nuttx.linkcmd}"
+endif
+
+HEAD_ASRC	= $(HEAD_SSRC:.S=$(ASMEXT))
+HEAD_AOBJ	= $(HEAD_SSRC:.S=$(OBJEXT))
+
+SSRCS		= $(CHIP_SSRCS) $(CMN_SSRCS)
+ASRCS		= $(SSRCS:.S=$(ASMEXT))
+AOBJS		= $(SSRCS:.S=$(OBJEXT))
+
+CSRCS		= $(CHIP_CSRCS) $(CMN_CSRCS)
+COBJS		= $(CSRCS:.c=$(OBJEXT))
+
+DEPSRCS 	= $(SSRCS) $(CSRCS)
+OBJS		= $(AOBJS) $(COBJS)
+
+BOARDDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src/board
+
+VPATH		= chip:common
+
+all: $(HEAD_OBJ) libarch$(LIBEXT)
+
+ifeq ($(COMPILER),zneocc.exe)
+$(ASRCS) $(HEAD_ASRC): %$(ASMEXT): %.S
+	@$(CPP) $(CPPFLAGS) $< -o $@.tmp
+	@cat $@.tmp | sed -e "s/^#/;/g" > $@
+	@rm $@.tmp
+
+$(AOBJS) $(HEAD_AOBJ): %$(OBJEXT): %$(ASMEXT)
+	$(call ASSEMBLE, $<, $@)
+else
+$(OBJS) $(HEAD_AOBJ): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+endif
+
+$(COBJS): %$(OBJEXT): %.c
+ifeq ($(COMPILER),zneocc.exe)
+	$(call COMPILE, `cygpath -w $<`, $@)
+else
+	$(call COMPILE, $<, $@)
+endif
+
+libarch$(LIBEXT): $(OBJS)
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $@, $${obj}); \
+	done ; )
+
+board/libboard$(LIBEXT):
+	@$(MAKE) -C board TOPDIR="$(TOPDIR)" libboard$(LIBEXT)
+
+ifeq ($(COMPILER),zneocc.exe)
+nuttx.linkcmd: $(LINKCMDTEMPLATE)
+	@cp -f $(LINKCMDTEMPLATE) nuttx.linkcmd
+	@echo "\"${shell cygpath -w $(TOPDIR)/nuttx}\"= \\" >>nuttx.linkcmd
+	@echo "  \"${shell cygpath -w $(ARCHSRCDIR)/$(HEAD_AOBJ)}\", \\" >>nuttx.linkcmd
+	@( for lib in $(LINKLIBS); do \
+		echo "  \"`cygpath -w $(TOPDIR)/$${lib}`\", \\" >>nuttx.linkcmd; \
+	done ; )
+	@echo "  \"${shell cygpath -w $(ARCHSRCDIR)/board/libboard$(LIBEXT)}\", \\"  >>nuttx.linkcmd
+	@echo "  \"${shell cygpath -w $(ZDSSTDLIBDIR)/chelpld$(LIBEXT)}\", \\"  >>nuttx.linkcmd
+	@echo "  \"${shell cygpath -w $(ZDSSTDLIBDIR)/fpld$(LIBEXT)}\""  >>nuttx.linkcmd
+else
+nuttx.linkcmd:
+endif
+
+nuttx$(EXEEXT): $(HEAD_AOBJ) board/libboard$(LIBEXT) nuttx.linkcmd
+	@echo "LD:  nuttx.hex"
+	@$(LD) $(LDFLAGS)
+
+.depend: Makefile chip/Make.defs $(DEPSRCS)
+	@if [ -e board/Makefile ]; then \
+		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
+	fi
+	@$(MKDEP) --dep-path chip --dep-path common $(CC) -- $(CFLAGS) -- $(DEPSRCS) >Make.dep
+	@touch $@
+
+depend: .depend
+
+clean:
+	@if [ -e board/Makefile ]; then \
+		$(MAKE) -C board TOPDIR="$(TOPDIR)" clean ; \
+	fi
+	@rm -f libarch$(LIBEXT) *~ .*.swp
+ifeq ($(COMPILER),zneocc.exe)
+	@rm -f nuttx.linkcmd *.asm *.tmp *.map
+endif
+	$(call CLEAN)
+
+distclean: clean
+	@if [ -e board/Makefile ]; then \
+		$(MAKE) -C board TOPDIR="$(TOPDIR)" distclean ; \
+	fi
+	@rm -f Make.dep .depend
+
+-include Make.dep

arch/z16/src/common/up_allocateheap.c

@@ -0,0 +1,112 @@
+/****************************************************************************
+ * common/up_allocateheap.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <debug.h>
+#include <nuttx/arch.h>
+#include <nuttx/mm.h>
+#include <arch/board/board.h>
+
+#include "chip/chip.h"
+#include "up_internal.h"
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/* Use ZDS-II linker settings to get the unused external RAM and use this
+ * for the NuttX heap.
+ */
+
+#ifndef CONFIG_HEAP1_BASE
+  extern _Far unsigned long far_heapbot;
+  #define CONFIG_HEAP1_BASE ((unsigned long)&far_heapbot)
+#endif
+
+#ifndef CONFIG_HEAP1_END
+  extern _Far unsigned long far_heaptop;
+  #define CONFIG_HEAP1_END ((unsigned long)&far_heaptop)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_allocate_heap
+ *
+ * Description:
+ *   The heap may be statically allocated by defining CONFIG_HEAP_BASE and
+ *   CONFIG_HEAP_SIZE.  If these are not defined, then this function will be
+ *   called to dynamically set aside the heap region.
+ *
+ ****************************************************************************/
+
+void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
+{
+  *heap_start = (FAR void*)CONFIG_HEAP1_BASE;
+  *heap_size = CONFIG_HEAP1_END - CONFIG_HEAP1_BASE;
+  up_ledon(LED_HEAPALLOCATE);
+}
+
+/****************************************************************************
+ * Name: up_addregions
+ *
+ * Description:
+ *   Memory may be added in non-contiguous chunks.  Additional chunks are
+ *   added by calling this function.
+ *
+ ****************************************************************************/
+
+#if CONFIG_MM_REGIONS > 1
+void up_addregion(void)
+{
+  mm_addregion((FAR void*)CONFIG_HEAP2_BASE, CONFIG_HEAP2_END - CONFIG_HEAP2_BASE);
+}
+#endif

arch/z16/src/common/up_assert.c

@@ -0,0 +1,179 @@
+/****************************************************************************
+ * common/up_assert.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <nuttx/irq.h>
+#include <nuttx/arch.h>
+#include <arch/board/board.h>
+
+#include "chip/chip.h"
+#include "os_internal.h"
+#include "up_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Output debug info if stack dump is selected -- even if 
+ * debug is not selected.
+ */
+
+#ifdef CONFIG_ARCH_STACKDUMP
+# undef  lldbg
+# define lldbg lib_lowprintf
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: _up_assert
+ ****************************************************************************/
+
+static void _up_assert(int errorcode) /* __attribute__ ((noreturn)) */
+{
+  /* Are we in an interrupt handler or the idle task? */
+
+  if (up_interrupt_context() || ((FAR _TCB*)g_readytorun.head)->pid == 0)
+    {
+       (void)irqsave();
+        for(;;)
+          {
+#ifdef CONFIG_ARCH_LEDS
+            up_ledon(LED_PANIC);
+            up_mdelay(250);
+            up_ledoff(LED_PANIC);
+            up_mdelay(250);
+#endif
+          }
+    }
+  else
+    {
+      exit(errorcode);
+    }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_assert
+ ****************************************************************************/
+
+#ifdef CONFIG_HAVE_FILENAME
+void up_assert(const ubyte *filename, int lineno)
+#else
+void up_assert(void)
+#endif
+{
+#if CONFIG_TASK_NAME_SIZE > 0
+  _TCB *rtcb = (_TCB*)g_readytorun.head;
+#endif
+
+  up_ledon(LED_ASSERTION);
+
+#ifdef CONFIG_HAVE_FILENAME
+#if CONFIG_TASK_NAME_SIZE > 0
+  lldbg("Assertion failed at file:%s line: %d task: %s\n",
+        filename, lineno, rtcb->name);
+#else
+  lldbg("Assertion failed at file:%s line: %d\n",
+        filename, lineno);
+#endif
+#else
+#if CONFIG_TASK_NAME_SIZE > 0
+  lldbg("Assertion failed: task: %s\n", rtcb->name);
+#else
+  lldbg("Assertion failed\n");
+#endif
+#endif
+
+  up_stackdump();
+  up_registerdump();
+ _up_assert(EXIT_FAILURE);
+}
+
+/****************************************************************************
+ * Name: up_assert_code
+ ****************************************************************************/
+
+#ifdef CONFIG_HAVE_FILENAME
+void up_assert_code(const ubyte *filename, int lineno, int errorcode)
+#else
+void up_assert_code(int errorcode)
+#endif
+{
+#if CONFIG_TASK_NAME_SIZE > 0
+  _TCB *rtcb = (_TCB*)g_readytorun.head;
+#endif
+
+  up_ledon(LED_ASSERTION);
+
+#ifdef CONFIG_HAVE_FILENAME
+#if CONFIG_TASK_NAME_SIZE > 0
+  lldbg("Assertion failed at file:%s line: %d task: %s error code: %d\n",
+        filename, lineno, rtcb->name, errorcode);
+#else
+  lldbg("Assertion failed at file:%s line: %d error code: %d\n",
+        filename, lineno, errorcode);
+#endif
+#else
+#if CONFIG_TASK_NAME_SIZE > 0
+  lldbg("Assertion failed: task: %s error code: %d\n", rtcb->name, errorcode);
+#else
+  lldbg("Assertion failed: error code: %d\n", errorcode);
+#endif
+#endif
+
+  up_stackdump();
+  up_registerdump();
+ _up_assert(errorcode);
+}

arch/z16/src/common/up_blocktask.c

@@ -0,0 +1,173 @@
+/****************************************************************************
+ * common/up_blocktask.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <sched.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+
+#include "os_internal.h"
+#include "up_internal.h"
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_block_task
+ *
+ * Description:
+ *   The currently executing task at the head of
+ *   the ready to run list must be stopped.  Save its context
+ *   and move it to the inactive list specified by task_state.
+ *
+ * Inputs:
+ *   tcb: Refers to a task in the ready-to-run list (normally
+ *     the task at the the head of the list).  It most be
+ *     stopped, its context saved and moved into one of the
+ *     waiting task lists.  It it was the task at the head
+ *     of the ready-to-run list, then a context to the new
+ *     ready to run task must be performed.
+ *   task_state: Specifies which waiting task list should be
+ *     hold the blocked task TCB.
+ *
+ ****************************************************************************/
+
+void up_block_task(FAR _TCB *tcb, tstate_t task_state)
+{
+  /* Verify that the context switch can be performed */
+
+  if ((tcb->task_state < FIRST_READY_TO_RUN_STATE) ||
+      (tcb->task_state > LAST_READY_TO_RUN_STATE))
+    {
+      PANIC(OSERR_BADBLOCKSTATE);
+    }
+  else
+    {
+      FAR _TCB *rtcb = (FAR _TCB*)g_readytorun.head;
+      boolean switch_needed;
+
+      /* dbg("Blocking TCB=%p\n", tcb); */
+
+      /* Remove the tcb task from the ready-to-run list.  If we
+       * are blocking the task at the head of the task list (the
+       * most likely case), then a context switch to the next
+       * ready-to-run task is needed. In this case, it should
+       * also be true that rtcb == tcb.
+       */
+
+      switch_needed = sched_removereadytorun(tcb);
+
+      /* Add the task to the specified blocked task list */
+
+      sched_addblocked(tcb, (tstate_t)task_state);
+
+      /* If there are any pending tasks, then add them to the g_readytorun
+       * task list now
+       */
+
+      if (g_pendingtasks.head)
+        {
+          switch_needed |= sched_mergepending();
+        }
+
+      /* Now, perform the context switch if one is needed */
+
+      if (switch_needed)
+        {
+          /* Are we in an interrupt handler? */
+
+          if (IN_INTERRUPT)
+            {
+              /* Yes, then we have to do things differently.
+               * Just copy the current registers into the OLD rtcb.
+               */
+
+               SAVE_IRQCONTEXT(rtcb);
+
+              /* Restore the exception context of the rtcb at the (new) head 
+               * of the g_readytorun task list.
+               */
+
+              rtcb = (FAR _TCB*)g_readytorun.head;
+              /* dbg("New Active Task TCB=%p\n", rtcb); */
+
+              /* Then setup so that the context will be performed on exit
+               * from the interrupt.
+               */
+
+              SET_IRQCONTEXT(rtcb);
+            }
+
+          /* Copy the user C context into the TCB at the (old) head of the
+           * g_readytorun Task list. if SAVE_USERCONTEXT returns a non-zero
+           * value, then this is really the previously running task restarting!
+           */
+
+          else if (!SAVE_USERCONTEXT(rtcb))
+            {
+              /* Restore the exception context of the rtcb at the (new) head 
+               * of the g_readytorun task list.
+               */
+
+              rtcb = (FAR _TCB*)g_readytorun.head;
+              /* dbg("New Active Task TCB=%p\n", rtcb); */
+
+              /* Then switch contexts */
+
+              RESTORE_USERCONTEXT(rtcb);
+            }
+        }
+    }
+}

arch/z16/src/common/up_copystate.c

@@ -1,7 +1,7 @@
 /****************************************************************************
  * common/up_copystate.c
  *
- *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without

arch/z16/src/common/up_createstack.c

@@ -0,0 +1,132 @@
+/****************************************************************************
+ * common/up_createstack.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <sched.h>
+#include <debug.h>
+
+#include <nuttx/kmalloc.h>
+#include <nuttx/arch.h>
+#include <arch/board/board.h>
+
+#include "chip/chip.h"
+#include "up_internal.h"
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_create_stack
+ *
+ * Description:
+ *   Allocate a stack for a new thread and setup
+ *   up stack-related information in the TCB.
+ *
+ *   The following TCB fields must be initialized:
+ *   adj_stack_size: Stack size after adjustment for hardware,
+ *     processor, etc.  This value is retained only for debug
+ *     purposes.
+ *   stack_alloc_ptr: Pointer to allocated stack
+ *   adj_stack_ptr: Adjusted stack_alloc_ptr for HW.  The
+ *     initial value of the stack pointer.
+ *
+ * Inputs:
+ *   tcb: The TCB of new task
+ *   stack_size:  The requested stack size.  At least this much
+ *     must be allocated.
+ ****************************************************************************/
+
+STATUS up_create_stack(_TCB *tcb, size_t stack_size)
+{
+  if (tcb->stack_alloc_ptr &&
+      tcb->adj_stack_size != stack_size)
+    {
+      sched_free(tcb->stack_alloc_ptr);
+      tcb->stack_alloc_ptr = NULL;
+    }
+
+   if (!tcb->stack_alloc_ptr)
+     {
+       tcb->stack_alloc_ptr = (uint32 *)kzmalloc(stack_size);
+     }
+
+   if (tcb->stack_alloc_ptr)
+     {
+       size_t top_of_stack;
+       size_t size_of_stack;
+
+       /* The Arm7Tdmi uses a push-down stack:  the stack grows
+	* toward loweraddresses in memory.  The stack pointer
+	* register, points to the lowest, valid work address
+	* (the "top" of the stack).  Items on the stack are
+	* referenced as positive word offsets from sp.
+	*/
+
+       top_of_stack = (uint32)tcb->stack_alloc_ptr + stack_size - 4;
+
+       /* The Arm7Tdmi stack must be aligned at word (4 byte)
+	* boundaries. If necessary top_of_stack must be rounded
+	* down to the next boundary
+	*/
+
+       top_of_stack &= ~3;
+       size_of_stack = top_of_stack - (uint32)tcb->stack_alloc_ptr + 4;
+
+       /* Save the adjusted stack values in the _TCB */
+
+       tcb->adj_stack_ptr  = (uint32*)top_of_stack;
+       tcb->adj_stack_size = size_of_stack;
+
+       up_ledon(LED_STACKCREATED);
+       return OK;
+     }
+
+   return ERROR;
+}

arch/z16/src/common/up_doirq.c

@@ -0,0 +1,121 @@
+/****************************************************************************
+ * common/up_doirq.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <assert.h>
+
+#include <nuttx/irq.h>
+#include <nuttx/arch.h>
+#include <arch/board/board.h>
+
+#include "chip/chip.h"
+#include "os_internal.h"
+#include "up_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_doirq
+ *
+ * Description:
+ *   Interface between low-level IRQ decode logic and the NuttX IRQ dispatch
+ *   logic.
+ *
+ ****************************************************************************/
+
+FAR chipreg_t *up_doirq(int irq, FAR chipreg_t *regs)
+{
+  FAR chipreg_t *ret = regs;
+ 
+  up_ledon(LED_INIRQ);
+#ifdef CONFIG_SUPPRESS_INTERRUPTS
+  PANIC(OSERR_ERREXCEPTION);
+#else
+  if ((unsigned)irq < NR_IRQS)
+    {
+       /* Current regs non-zero indicates that we are processing
+        * an interrupt; current_regs is also used to manage
+        * interrupt level context switches.
+        */
+
+       current_regs = regs;
+
+       /* Mask and acknowledge the interrupt */
+
+       up_maskack_irq(irq);
+
+       /* Deliver the IRQ */
+
+       irq_dispatch(irq, regs);
+
+       /* Indicate that we are no long in an interrupt handler */
+
+       ret          = current_regs;
+       current_regs = NULL;
+
+       /* Unmask the last interrupt (global interrupts are still
+        * disabled.
+        */
+
+       up_enable_irq(irq);
+    }
+  up_ledoff(LED_INIRQ);
+#endif
+  return ret;
+}

arch/z16/src/common/up_exit.c

@@ -0,0 +1,177 @@
+/****************************************************************************
+ * common/up_exit.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <sched.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+
+#include "chip/chip.h"
+#include "os_internal.h"
+#include "up_internal.h"
+
+#ifdef CONFIG_DUMP_ON_EXIT
+#include <nuttx/fs.h>
+#endif
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: _up_dumponexit
+ *
+ * Description:
+ *   Dump the state of all tasks whenever on task exits.  This is debug
+ *   instrumentation that was added to check file-related reference counting
+ *   but could be useful again sometime in the future.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
+static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg)
+{
+#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NFILE_STREAMS > 0
+  int i;
+#endif
+
+  dbg("  TCB=%p name=%s\n", tcb, tcb->argv[0]);
+
+#if CONFIG_NFILE_DESCRIPTORS > 0
+  if (tcb->filelist)
+    {
+      lldbg("    filelist refcount=%d\n",
+            tcb->filelist->fl_crefs);
+
+      for (i = 0; i < CONFIG_NFILE_DESCRIPTORS; i++)
+        {
+          struct inode *inode = tcb->filelist->fl_files[i].f_inode;
+          if (inode)
+            {
+              lldbg("      fd=%d refcount=%d\n",
+                    i, inode->i_crefs);
+            }
+        }
+    }
+#endif
+
+#if CONFIG_NFILE_STREAMS > 0
+  if (tcb->streams)
+    {
+      lldbg("    streamlist refcount=%d\n",
+            tcb->streams->sl_crefs);
+
+      for (i = 0; i < CONFIG_NFILE_STREAMS; i++)
+        {
+          struct file_struct *filep = &tcb->streams->sl_streams[i];
+          if (filep->fs_filedes >= 0)
+            {
+#if CONFIG_STDIO_BUFFER_SIZE > 0
+              lldbg("      fd=%d nbytes=%d\n",
+                    filep->fs_filedes,
+                    filep->fs_bufpos - filep->fs_bufstart);
+#else
+              lldbg("      fd=%d\n", filep->fs_filedes);
+#endif
+            }
+        }
+    }
+#endif
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: _exit
+ *
+ * Description:
+ *   This function causes the currently executing task to cease
+ *   to exist.  This is a special case of task_delete() where the task to
+ *   be deleted is the currently executing task.  It is more complex because
+ *   a context switch must be perform to the the next ready to run task.
+ *
+ ****************************************************************************/
+
+void _exit(int status)
+{
+  FAR _TCB* tcb;
+
+  /* Disable interrupts.  Interrupts will remain disabled until
+   * the new task is resumed below.
+   */
+
+  (void)irqsave();
+
+  slldbg("TCB=%p exitting\n", tcb);
+
+#if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
+  lldbg("Other tasks:\n");
+  sched_foreach(_up_dumponexit, NULL);
+#endif
+
+  /* Destroy the task at the head of the ready to run list. */
+
+  (void)task_deletecurrent();
+
+  /* Now, perform the context switch to the new ready-to-run task at the
+   * head of the list.
+   */
+
+  tcb = (FAR _TCB*)g_readytorun.head;
+  slldbg("New Active Task TCB=%p\n", tcb);
+
+  /* Then switch contexts */
+
+  RESTORE_USERCONTEXT(tcb);
+}
+

arch/z16/src/common/up_idle.c

@@ -0,0 +1,107 @@
+/****************************************************************************
+ * common/up_idle.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+
+#include <nuttx/arch.h>
+#include <arch/board/board.h>
+
+#include "up_internal.h"
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#if defined(CONFIG_ARCH_LEDS) && defined(CONFIG_ARCH_BRINGUP)
+static ubyte g_ledtoggle = 0;
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_idle
+ *
+ * Description:
+ *   up_idle() is the logic that will be executed when their
+ *   is no other ready-to-run task.  This is processor idle
+ *   time and will continue until some interrupt occurs to
+ *   cause a context switch from the idle task.
+ *
+ *   Processing in this state may be processor-specific. e.g.,
+ *   this is where power management operations might be
+ *   performed.
+ *
+ ****************************************************************************/
+
+void up_idle(void)
+{
+#if defined(CONFIG_ARCH_LEDS) && defined(CONFIG_ARCH_BRINGUP)
+  g_ledtoggle++;
+  if (g_ledtoggle == 0x80)
+    {
+      up_ledon(LED_IDLE);
+    }
+  else if (g_ledtoggle == 0x00)
+    {
+      up_ledoff(LED_IDLE);
+    }
+#endif
+
+#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
+  /* If the system is idle and there are no timer interrupts,
+   * then process "fake" timer interrupts. Hopefully, something
+   * will wake up.
+   */
+
+  sched_process_timer();
+#endif
+}
+