P-code optimizer

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@506 7fd9a85b-ad96-42d3-883c-3090e2eb8679

15 files changed, 3487 insertions, 0 deletions

diff --git a/misc/pascal/insn32/popt/Makefile b/misc/pascal/insn32/popt/Makefile
new file mode 100644
index 0000000000..5670a6a3d0
--- /dev/null
+++ b/misc/pascal/insn32/popt/Makefile
@@ -0,0 +1,93 @@
+############################################################################
+# insn32/popt/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.
+#
+############################################################################
+#
+# Directories
+#
+POPTDIR		= ${shell pwd}
+INSNDIR		= $(POPTDIR)/..
+PASCAL		= $(POPTDIR)/../..
+
+include $(PASCAL)/Make.config
+include $(PASCAL)/Make.defs
+
+INCDIR		= $(PASCAL)/include
+LIBDIR		= $(PASCAL)/lib
+BINDIR		= $(PASCAL)/bin32
+
+# ----------------------------------------------------------------------
+# Tools
+
+EXTRA_INCLUDES	= -I$(INSNDIR)/include
+INCLUDES	+= $(EXTRA_INCLUDES)
+CFLAGS		+= $(EXTRA_INCLUDES)
+
+# ----------------------------------------------------------------------
+# Objects and targets
+
+POPTSRCS	= popt.c psopt.c polocal.c pcopt.c pjopt.c plopt.c pfopt.c
+POPTOBJS	= $(POPTSRCS:.c=.o)
+
+OBJS		= $(POPTOBJS)
+LIBS		= libpoff.a libpas.a
+
+all: popt
+.PHONY: all check_libs popt clean
+
+$(OBJS): %.o: %.c
+	$(CC) -c $(CFLAGS) $< -o $@
+
+check_libs:
+	@if [ ! -f $(LIBDIR)/libpoff.a ] ; then \
+		echo "$(LIBDIR)/libpoff.a does not exist" ; \
+		exit 1 ; \
+	fi
+	@if [ ! -f $(LIBDIR)/libpas.a ] ; then \
+		echo "$(LIBDIR)/libpas.a does not exist" ; \
+		exit 1 ; \
+	fi
+	@if [ ! -f $(LIBDIR)/libinsn.a ] ; then \
+		echo "$(LIBDIR)/libinsn.a does not exist" ; \
+		exit 1 ; \
+	fi
+
+$(BINDIR)/popt: check_libs $(POPTOBJS)
+	$(CC) -o $@ $(LDFLAGS) $(POPTOBJS) -lpas -linsn -lpoff
+
+popt: $(BINDIR)/popt
+
+clean:
+	$(RM) popt *.o core *~
+
+# ----------------------------------------------------------------------
diff --git a/misc/pascal/insn32/popt/pcopt.c b/misc/pascal/insn32/popt/pcopt.c
new file mode 100644
index 0000000000..ee5f4d9243
--- /dev/null
+++ b/misc/pascal/insn32/popt/pcopt.c
@@ -0,0 +1,839 @@
+/**********************************************************************

+ * pcopt.c

+ * Constant Expression Optimizations

+ *

+ *   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 <stdio.h>

+

+#include "keywords.h"

+#include "pdefs.h"

+#include "pinsn32.h"

+

+#include "paslib.h"

+#include "popt.h"

+#include "polocal.h"

+#include "pcopt.h"

+

+/**********************************************************************/

+

+int unaryOptimize(void)

+{

+  register uint32 temp;

+  register int i;

+  int nchanges = 0;

+

+  TRACE(stderr, "[unaryOptimize]");

+

+  /* At least two pcodes are need to perform unary optimizations */

+

+  i = 0;

+  while (i < nops-1)

+    {

+      /* Check for a constant value being pushed onto the stack */

+

+      if (GETOP(pptr[i]) == oPUSH)

+	{

+	  switch (GETOP(pptr[i+1]))

+	    {

+	      /* Delete unary operators on constants */

+	    case oNEG   :

+	      PUTARG(pptr[i], -GETARG(pptr[i]));

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oABS   :

+	      if ((sint32)GETARG(pptr[i]) < 0)

+		PUTARG(pptr[i], -(sint32)GETARG(pptr[i]));

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oINC   :

+	      PUTARG(pptr[i], GETARG(pptr[i]) + 1);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oDEC   :

+	      PUTARG(pptr[i], GETARG(pptr[i]) - 1);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oNOT   :

+	      PUTARG(pptr[i], ~GETARG(pptr[i]));

+	      PUTARG(pptr[i], ~(GETARG(pptr[i])));

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	      /* Simplify binary operations on constants */

+

+	    case oADD :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  deletePcodePair(i, (i+1));

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i+1], oINC);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end else if */

+	      else if (GETARG(pptr[i]) == ARGONES)

+		{

+		  PUTOP(pptr[i+1], oDEC);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	    case oSUB :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  deletePcodePair(i, (i+1));

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i+1], oDEC);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end else if */

+	      else if (GETARG(pptr[i]) == ARGONES)

+		{

+		  PUTOP(pptr[i+1], oINC);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	    case oMUL :

+	    case oDIV :

+	      temp = 0;

+	      switch (GETARG(pptr[i]))

+		{

+		case 1 :

+		  deletePcodePair(i, (i+1));

+		  nchanges++;

+		  break;

+		case 16384 : temp++;

+		case  8192 : temp++;

+		case  4096 : temp++;

+		case  2048 : temp++;

+		case  1024 : temp++;

+		case   512 : temp++;

+		case   256 : temp++;

+		case   128 : temp++;

+		case    64 : temp++;

+		case    32 : temp++;

+		case    16 : temp++;

+		case     8 : temp++;

+		case     4 : temp++;

+		case     2 : temp++;

+		  PUTARG(pptr[i], temp);

+		  if (GETOP(pptr[i+1]) == oMUL)

+		    PUTOP(pptr[i+1], oSLL);

+		  else

+		    PUTOP(pptr[i+1], oSRA);

+		  nchanges++;

+		  i++;

+		  break;

+

+		default :

+		  i++;

+		  break;

+		} /* end switch */

+	      break;

+

+	    case oSLL :

+	    case oSRL :

+	    case oSRA :

+	    case oOR  :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  deletePcodePair(i, (i+1));

+		  nchanges++;

+		} /* end if */

+	      else i++;

+	      break;

+

+	    case oAND :

+	      if (GETARG(pptr[i]) == ARGONES)

+		{

+		  deletePcodePair(i, (i+1));

+		  nchanges++;

+		} /* end if */

+	      else i++;

+	      break;

+

+	      /* Delete comparisons of constants to zero */

+

+	    case oEQUZ  :

+	      if (GETARG(pptr[i]) == 0)

+		PUTARG(pptr[i], -1);

+	      else

+		PUTARG(pptr[i], 0);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oNEQZ  :

+	      if (GETARG(pptr[i]) != 0)

+		PUTARG(pptr[i], -1);

+	      else

+		PUTARG(pptr[i], 0);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oLTZ   :

+	      if ((sint32)GETARG(pptr[i]) < 0)

+		PUTARG(pptr[i], -1);

+	      else

+		PUTARG(pptr[i], 0);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+			      

+	    case oGTEZ  :

+	      if ((sint32)GETARG(pptr[i]) >= 0)

+		PUTARG(pptr[i], -1);

+	      else

+		PUTARG(pptr[i], 0);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oGTZ   :

+	      if (GETARG(pptr[i]) > 0)

+		PUTARG(pptr[i], -1);

+	      else

+		PUTARG(pptr[i], 0);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+											 

+	    case oLTEZ :

+	      if (GETARG(pptr[i]) <= 0)

+		PUTARG(pptr[i], -1);

+	      else

+		PUTARG(pptr[i], 0);

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	      /*  Simplify comparisons with certain constants */

+

+	    case oEQU   :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  PUTOP(pptr[i+1],oEQUZ);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i], oDEC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oEQUZ);

+		  nchanges++;

+		} /* end else if */

+	      else if ((sint32)GETARG(pptr[i]) == -1)

+		{

+		  PUTOP(pptr[i], oINC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oEQUZ);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	    case oNEQ   :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  PUTOP(pptr[i+1], oNEQZ);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i], oDEC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oNEQZ);

+		  nchanges++;

+		} /* end else if */

+	      else if ((sint32)GETARG(pptr[i]) == -1)

+		{

+		  PUTOP(pptr[i], oINC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oNEQZ);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	    case oLT    :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  PUTOP(pptr[i+1], oLTZ);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i], oDEC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oLTZ);

+		  nchanges++;

+		} /* end else if */

+	      else if ((sint32)GETARG(pptr[i]) == -1)

+		{

+		  PUTOP(pptr[i], oINC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oLTZ);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	    case oGTE   :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  PUTOP(pptr[i+1], oGTEZ);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i], oDEC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oGTEZ);

+		  nchanges++;

+		} /* end else if */

+	      else if ((sint32)GETARG(pptr[i]) == -1)

+		{

+		  PUTOP(pptr[i], oINC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oGTEZ);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	    case oGT    :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  PUTOP(pptr[i+1], oGTZ);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i], oDEC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oGTZ);

+		  nchanges++;

+		} /* end else if */

+	      else if ((sint32)GETARG(pptr[i]) == -1)

+		{

+		  PUTOP(pptr[i], oINC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oGTZ);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	    case oLTE   :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  PUTOP(pptr[i+1], oLTEZ);

+		  deletePcode(i);

+		  nchanges++;

+		} /* end if */

+	      else if (GETARG(pptr[i]) == 1)

+		{

+		  PUTOP(pptr[i], oDEC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oLTEZ);

+		  nchanges++;

+		} /* end else if */

+	      else if ((sint32)GETARG(pptr[i]) == -1)

+		{

+		  PUTOP(pptr[i], oINC);

+		  PUTARG(pptr[i], 0);

+		  PUTOP(pptr[i+1], oLTEZ);

+		  nchanges++;

+		} /* end else if */

+	      else i++;

+	      break;

+

+	      /* Simplify or delete condition branches on constants */

+

+	    case oJEQUZ :

+	      if (GETARG(pptr[i]) == 0)

+		{

+		  PUTOP(pptr[i+1], oJMP);

+		  deletePcode(i);

+		} /* end if */

+	      else 

+		deletePcodePair(i, (i+1));

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      if (GETARG(pptr[i]) != 0)

+		{

+		  PUTOP(pptr[i+1], oJMP);

+		  deletePcode(i);

+		} /* end if */

+	      else 

+		deletePcodePair(i, (i+1));

+	      nchanges++;

+	      break;

+

+	    case oJLTZ  :

+	      if ((sint32)GETARG(pptr[i]) < 0)

+		{

+		  PUTOP(pptr[i+1], oJMP);

+		  deletePcode(i);

+		} /* end if */

+	      else 

+		deletePcodePair(i, (i+1));

+	      nchanges++;

+	      break;

+

+	    case oJGTEZ :

+	      if ((sint32)GETARG(pptr[i]) >= 0)

+		{

+		  PUTOP(pptr[i+1], oJMP);

+		  deletePcode(i);

+		} /* end if */

+	      else 

+		deletePcodePair(i, (i+1));

+	      nchanges++;

+	      break;

+

+	    case oJGTZ  :

+	      if (GETARG(pptr[i]) > 0)

+		{

+		  PUTOP(pptr[i+1], oJMP);

+		  deletePcode(i);

+		} /* end if */

+	      else 

+		deletePcodePair(i, (i+1));

+	      nchanges++;

+	      break;

+

+	    case oJLTEZ :

+	      if (GETARG(pptr[i]) <= 0)

+		{

+		  PUTOP(pptr[i+1], oJMP);

+		  deletePcode(i);

+		} /* end if */

+	      else 

+		deletePcodePair(i, (i+1));

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	} /* end if */

+

+	  /* Delete multiple modifications of DSEG pointer */

+

+      else if (GETOP(pptr[i]) == oINDS)

+	{

+	  if (GETOP(pptr[i+1]) == oINDS)

+	    {

+	      PUTARG(pptr[i], GETARG(pptr[i] + GETARG(pptr[i+1])));

+	      deletePcode(i+1);

+	    } /* end if */

+	  else i++;

+	} /* end else if */

+      else i++;

+    } /* end while */

+

+  return (nchanges);

+

+} /* end unaryOptimize */

+

+/**********************************************************************/

+

+int binaryOptimize(void)

+{

+  register int i;

+  int nchanges = 0;

+

+  TRACE(stderr, "[binaryOptimize]");

+

+  /* At least two pcodes are needed to perform the following binary */

+  /* operator optimizations */

+

+  i = 0;

+  while (i < nops-2)

+    {

+      if (GETOP(pptr[i]) == oPUSH)

+	{

+	  if (GETOP(pptr[i+1]) == oPUSH)

+	    {

+	      switch (GETOP(pptr[i+2]))

+		{

+		case oADD :

+		  PUTARG(pptr[i], GETARG(pptr[i]) + GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oSUB :

+		  PUTARG(pptr[i], GETARG(pptr[i]) - GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oMUL :

+		  PUTARG(pptr[i], GETARG(pptr[i]) * GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oDIV :

+		  PUTARG(pptr[i], GETARG(pptr[i]) / (sint32)GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oMOD :

+		  PUTARG(pptr[i], GETARG(pptr[i]) % GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oSLL :

+		  PUTARG(pptr[i], GETARG(pptr[i]) << GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oSRL :

+		  PUTARG(pptr[i], GETARG(pptr[i]) >> GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oSRA :

+		  PUTARG(pptr[i], (sint32)GETARG(pptr[i]) >> GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oOR  :

+		  PUTARG(pptr[i], GETARG(pptr[i]) | GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oAND :

+		  PUTARG(pptr[i], GETARG(pptr[i]) & GETARG(pptr[i+1]));

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oEQU :

+		  if (GETARG(pptr[i]) == GETARG(pptr[i+1]))

+		    PUTARG(pptr[i], -1);

+		  else

+		    PUTARG(pptr[i], 0);

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oNEQ :

+		  if (GETARG(pptr[i]) != GETARG(pptr[i+1]))

+		    PUTARG(pptr[i], -1);

+		  else

+		    PUTARG(pptr[i], 0);

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oLT  :

+		  if ((sint32)GETARG(pptr[i]) < (sint32)GETARG(pptr[i+1]))

+		    PUTARG(pptr[i], -1);

+		  else

+		    PUTARG(pptr[i], 0);

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oGTE :

+		  if ((sint32)GETARG(pptr[i]) >= (sint32)GETARG(pptr[i+1]))

+		    PUTARG(pptr[i], -1);

+		  else

+		    PUTARG(pptr[i], 0);

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oGT  :

+		  if ((sint32)GETARG(pptr[i]) > (sint32)GETARG(pptr[i+1]))

+		    PUTARG(pptr[i], -1);

+		  else

+		    PUTARG(pptr[i], 0);

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		case oLTE :

+		  if ((sint32)GETARG(pptr[i]) <= (sint32)GETARG(pptr[i+1]))

+		    PUTARG(pptr[i], -1);

+		  else

+		    PUTARG(pptr[i], 0);

+		  deletePcodePair((i+1), (i+2));

+		  nchanges++;

+		  break;

+

+		default   :

+		  i++;

+		  break;

+		} /* end switch */

+	    } /* end if */

+

+	  /* A single (constant) pcode is sufficient to perform the */

+	  /* following binary operator optimizations */

+

+	  else if ((GETOP(pptr[i+1]) == oLDSH) || (GETOP(pptr[i+1]) == oLDSB) ||

+		   (GETOP(pptr[i+1]) == oLAS)  || (GETOP(pptr[i+1]) == oLAC))

+	    {

+	      switch (GETOP(pptr[i+2]))

+		{

+		case oADD :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      deletePcodePair(i, (i+2));

+		      nchanges++;

+		    } /* end if */

+		  else if (GETARG(pptr[i]) == 1)

+		    {

+		      PUTOP(pptr[i+2], oINC);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end else if */

+		  else if (GETARG(pptr[i]) == ARGONES)

+		    {

+		      PUTOP(pptr[i+2], oDEC);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end else if */

+		  else i++;

+		  break;

+

+		case oSUB :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      PUTOP(pptr[i], oNEG);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oMUL :

+		  {

+		    sint32 stmp32 = 0;

+		    switch (GETARG(pptr[i]))

+		      {

+		      case 1 :

+			deletePcodePair(i, (i+2));

+			nchanges++;

+			break;

+		      case 16384 : stmp32++;

+		      case  8192 : stmp32++;

+		      case  4096 : stmp32++;

+		      case  2048 : stmp32++;

+		      case  1024 : stmp32++;

+		      case   512 : stmp32++;

+		      case   256 : stmp32++;

+		      case   128 : stmp32++;

+		      case    64 : stmp32++;

+		      case    32 : stmp32++;

+		      case    16 : stmp32++;

+		      case     8 : stmp32++;

+		      case     4 : stmp32++;

+		      case     2 : stmp32++;

+			PUTOP(pptr[i],    GETOP(pptr[i+1]));

+			PUTARG(pptr[i],   GETARG(pptr[i+1]));

+			PUTOP(pptr[i+1],  oPUSH);

+			PUTARG(pptr[i+1], stmp32);

+			PUTOP(pptr[i+2],  oSLL);

+			nchanges++;

+			i++;

+			break;

+

+		      default :

+			i++;

+			break;

+		      }

+		  }

+		  break;

+

+		case oOR  :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      deletePcodePair(i, (i+2));

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oAND :

+		  if (GETARG(pptr[i]) == ARGONES)

+		    {

+		      deletePcodePair(i, (i+2));

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oEQU :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      PUTOP(pptr[i+2], oEQUZ);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oNEQ :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      PUTOP(pptr[i+2], oNEQZ);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oLT  :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      PUTOP(pptr[i+2], oGTEZ);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oGTE :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      PUTOP(pptr[i+2], oLTZ);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oGT  :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      PUTOP(pptr[i+2], oLTEZ);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		case oLTE :

+		  if (GETARG(pptr[i]) == 0)

+		    {

+		      PUTOP(pptr[i+2], oGTZ);

+		      deletePcode(i);

+		      nchanges++;

+		    } /* end if */

+		  else i++;

+		  break;

+

+		default   :

+		  i++;

+		  break;

+

+		} /* end switch */

+	    } /* end else if */

+	  else i++;

+	} /* end if */

+

+      /* Misc improvements on binary operators */

+

+      else if (GETOP(pptr[i]) == oNEG)

+	{

+	  /* Negation followed by add is subtraction */

+

+	  if (GETOP(pptr[i+1]) == oADD)

+	    {

+	      PUTOP(pptr[i+1], oSUB);

+	      deletePcode(i);

+	      nchanges++;

+	    }

+

+	  /* Negation followed by subtraction is addition */

+

+	  else if (GETOP(pptr[i]) == oSUB)

+	    {

+	      PUTOP(pptr[i+1], oADD);

+	      deletePcode(i);

+	      nchanges++;

+	    }

+	  else i++;

+	}

+      else i++;

+    } /* end while */

+

+  return (nchanges);

+

+} /* end binaryOptimize */

+

+/**********************************************************************/

diff --git a/misc/pascal/insn32/popt/pcopt.h b/misc/pascal/insn32/popt/pcopt.h
new file mode 100644
index 0000000000..f638fcf281
--- /dev/null
+++ b/misc/pascal/insn32/popt/pcopt.h
@@ -0,0 +1,47 @@
+/***************************************************************************

+ * pcopt.h

+ * External Declarations associated with PCOPT.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.

+ *

+ ***************************************************************************/

+

+#ifndef __PCOPT_H

+#define __PCOPT_H

+

+/***************************************************************************

+ * Global Function Prototypes

+ ***************************************************************************/

+

+extern int unaryOptimize  ( void );

+extern int binaryOptimize ( void );

+

+#endif /* __PCOPT_H */

diff --git a/misc/pascal/insn32/popt/pfopt.c b/misc/pascal/insn32/popt/pfopt.c
new file mode 100644
index 0000000000..de07400bf2
--- /dev/null
+++ b/misc/pascal/insn32/popt/pfopt.c
@@ -0,0 +1,543 @@
+/**********************************************************************
+ * pfopt.c
+ * Finalization of optimized image
+ *
+ *   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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "keywords.h"
+#include "pdefs.h"
+#include "podefs.h"
+#include "pedefs.h"
+#include "pinsn32.h"
+#include "poff.h"
+
+#include "paslib.h"
+#include "pofflib.h"
+#include "popt.h"
+#include "pfopt.h"
+#include "pinsn.h"
+#include "perr.h"
+
+/**********************************************************************
+ * Definitions
+ **********************************************************************/
+
+/**********************************************************************
+ * Private Types
+ **********************************************************************/
+
+/**********************************************************************
+ * Private Data
+ **********************************************************************/
+
+/**********************************************************************
+ * Private Function Prototypes
+ **********************************************************************/
+
+/**********************************************************************
+ * Private Inline Functions
+ **********************************************************************/
+
+/**********************************************************************
+ * Private Functions
+ **********************************************************************/
+
+/**********************************************************************/
+
+static void pass1(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle)
+{
+  OPTYPE op;
+  uint32 pc;
+  int opsize;
+  int fileno = 0;
+
+  /* Build label / line number reference table
+   *
+   * CASE 1: LABEL
+   *   Add label number + PC to table
+   *   discard
+   * CASE 2: LINE
+   *   genereate a line number reference
+   *   discard
+   * ELSE:
+   *   pass through with no additional action
+   */
+
+  pc = 0;
+  do
+    {
+      opsize = insn_GetOpCode(poffHandle, &op);
+      if (GETOP(&op) == oLABEL)
+	{
+	  poffAddToDefinedLabelTable(GETARG(&op), pc);
+	}
+      else if (GETOP(&op) == oINCLUDE)
+	{
+	  fileno = GETARG(&op);
+	}
+      else if (GETOP(&op) == oLINE)
+	{
+	  poffAddLineNumber(poffHandle, GETARG(&op), fileno, pc);
+	}
+      else
+	{
+	  insn_AddTmpOpCode(poffProgHandle, &op);
+	  pc += opsize;
+	}
+    }
+  while (GETOP(&op) != oEND);
+
+  /* Replace the original program data with the new program data */
+
+  poffReplaceProgData(poffHandle, poffProgHandle);
+}
+
+/**********************************************************************/
+
+static void pass2(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle)
+{
+  poffSymHandle_t poffSymHandle;
+  sint32 symIndex;
+  sint32 nchanges = 0;
+
+  /* Get a container to temporarily hold any modifications that we
+   * make to the symbol table.
+   */
+
+  poffSymHandle = poffCreateSymHandle();
+  if (poffSymHandle == NULL)
+    {
+      fatal(eNOMEMORY);
+    }
+
+  /* Now read all of the symbols.  (1) Add each undefined code reference
+   * to the label reference table, and (2) Change each defined code
+   * reference from a label to a program data section offset.
+   */
+
+  do
+    {
+      poffLibSymbol_t symbol;
+      symIndex = poffGetSymbol(poffHandle, &symbol);
+      if (symIndex >= 0)
+	{
+	  if ((symbol.type == STT_PROC) || (symbol.type == STT_FUNC))
+	    {
+	      /* It is a symbol associated with the program data section.
+	       * Has is value been defined?
+	       */
+
+	      if ((symbol.flags & STF_UNDEFINED) != 0)
+		{
+		  /* No... Add it to the list of undefined labels */
+
+		  poffAddToUndefinedLabelTable(symbol.value, symIndex);
+		}
+	      else
+		{
+		  /* It is a defined symbol. In this case, we should have
+		   * encountered its LABEL marker in the pass1 processing
+		   * and the following look up should not fail.
+		   */
+		  sint32 value = poffGetPcForDefinedLabel(symbol.value);
+		  if (value < 0)
+		    {
+		      DEBUG(stdout, "Failed to find label L%04lx\n", symbol.value);
+		      fatal(ePOFFCONFUSION);
+		    }
+		  else
+		    {
+		      /* Replace the lavel value with the section offset
+		       * (pc) value.
+		       */
+
+		      symbol.value = value;
+		      nchanges++;
+		    }
+		}
+	    }
+
+	  /* In either event, we will want to save the symbol in case
+	   * we need to re-write the symbol table.
+	   */
+
+	  (void)poffAddTmpSymbol(poffHandle, poffSymHandle, &symbol);
+	}
+    }
+  while (symIndex >= 0);
+
+  /* We any changes made to the symbol table in the temporary container? */
+
+  if (nchanges != 0)
+    {
+      /* Yes, update the symbol table */
+
+      poffReplaceSymbolTable(poffHandle, poffSymHandle);
+
+    }
+
+  /* Release the symbol container. */
+
+  poffDestroySymHandle(poffSymHandle);
+}
+
+/**********************************************************************/
+
+static void pass3(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle)
+{
+  OPTYPE op;
+  uint32 pc;
+  uint32 opsize;
+
+  /* Read each opcode, generate relocation information and
+   * replace label references with program section offsets.
+   *
+   * CASE 1: LAC
+   *   generate RODATA relocation entry
+   * CASE 2: PCAL instructions
+   *   replace label with I-space offset, OR
+   *   generate a PROGRAM relocation entry
+   * CASE 3: J* instructions
+   *   replace label with I-space offset
+   * CASE 4: LDS*, STS*, and LAS* instructions
+   *   generate a STACK relocation (if imported?)
+   * ELSE:
+   *   pass through with no additional action
+   */
+
+  pc = 0;
+  do
+    {
+      opsize = insn_GetOpCode(poffHandle, &op);
+      switch (GETOP(&op))
+	{
+	  /* Load of an address in the rodata section */
+
+	case oLAC:
+	  /* We are referencing something from the rodata section.
+	   * No special action need be taken.
+	   */
+	  break;
+
+	  /* Call to a procedure or function. */
+
+	case oPCAL:
+	  {
+	    /* Check if this is a defined label, i.e., a call to
+	     * procedure or function in the same file.
+	     */
+
+	    sint32 value = poffGetPcForDefinedLabel(GETARG(&op));
+	    if (value >= 0)
+	      {
+		/* Yes... replace the label reference with
+		 * a text section offset.  No relocation record
+		 * is needed in this case.  The only relocation
+		 * may be performed is a subsequent program data
+		 * section offset.
+		 */
+
+		PUTARG(&op, value);
+	      }
+	    else
+	      {
+		/* Check if this is a undefined label.  This would
+		 * occur for a call to a procedure or a function that
+		 * is defined in some other unit file.
+		 */
+
+		value = poffGetSymIndexForUndefinedLabel(GETARG(&op));
+		if (value >= 0)
+		  {
+		    /* Use the value zero now */
+
+		    PUTARG(&op, 0);
+
+		    /* And generate a symbol-based relocation */
+
+		    (void)poffAddRelocation(poffHandle, RLT_PCAL, value, pc);
+		  }
+		else
+		  {
+		    DEBUG(stdout, "Failed to find call label L%04x\n",
+			  GETARG(&op));
+		    fatal(ePOFFCONFUSION);
+		  }
+	      }
+	  }
+	  break;
+
+	  /* Jumps to "nearby" addresses */
+
+	case oJMP:   /* Unconditional */
+	case oJEQUZ: /* Unary comparisons with zero */
+	case oJNEQZ:
+	case oJLTZ:
+	case oJGTEZ:
+	case oJGTZ:
+	case oJLTEZ:
+	case oJEQU:  /* Binary comparisons */
+	case oJNEQ:
+	case oJLT:
+	case oJGTE:
+	case oJGT:
+	case oJLTE:
+	  {
+	    /* Check if this is a defined label.  This must be the case
+	     * because there can be no jumps into a unit file.
+	     */
+
+	    sint32 value = poffGetPcForDefinedLabel(GETARG(&op));
+	    if (value >= 0)
+	      {
+		/* Yes... replace the label reference with
+		 * a text section offset.  No relocation record
+		 * is needed in this case.  The only relocation
+		 * may be performed is a subsequent program data
+		 * sectioin offset.
+		 */
+
+		PUTARG(&op, value);
+	      }
+	    else
+	      {
+		DEBUG(stdout, "Failed to find jump label L%04x\n",
+		      GETARG(&op));
+		fatal(ePOFFCONFUSION);
+	      }
+	  }
+	  break;
+
+	  /* References to stack via level offset */
+
+	case oLAS:   /* Load stack address */
+	case oLASX:
+	case oLDS:   /* Load value */
+	case oLDSH:
+	case oLDSB:
+	case oLDSM:
+	case oSTS:   /* Store value */
+	case oSTSH:
+	case oSTSB:
+	case oSTSM:
+	case oLDSX:
+	case oLDSXH: /* Load value indexed */
+	case oLDSXB:
+	case oLDSXM:
+	case oSTSX:  /* Store value indexed */
+	case oSTSXH:
+	case oSTSXB:
+	case oSTSXM:
+	  {
+#warning REVISIT
+	  }
+	  break;
+
+	  /* Otherwise, it is not an interesting opcode */
+	default:
+	  break;
+	}
+
+      /* Save the potentially modified opcode in the temporary
+       * program data container.
+       */
+
+      insn_AddTmpOpCode(poffProgHandle, &op);
+      pc += opsize;
+    }
+  while (GETOP(&op) != oEND);
+
+  /* Replace the original program data with the new program data */
+
+  poffReplaceProgData(poffHandle, poffProgHandle);
+}
+
+/**********************************************************************/
+/* Fixed label references in the debug function information */
+
+static void pass4(poffHandle_t poffHandle)
+{
+  poffLibDebugFuncInfo_t *pDebugInfoHead = NULL;
+  poffLibDebugFuncInfo_t *pDebugInfoTail = NULL;
+  poffLibDebugFuncInfo_t *pDebugInfo;
+  poffLibDebugFuncInfo_t *pNextDebugInfo;
+
+  /* Read all function debug information into a link list */
+
+  while ((pDebugInfo = poffGetDebugFuncInfo(poffHandle)) != NULL)
+    {
+      if (!pDebugInfoHead)
+	{
+	  pDebugInfoHead = pDebugInfo;
+	}
+      else
+	{
+	  pDebugInfoTail->next = pDebugInfo;
+	}
+      pDebugInfoTail = pDebugInfo;
+    }
+
+  /* Convert all of the label references to pcode offsets */
+
+  for (pDebugInfo = pDebugInfoHead; pDebugInfo; pDebugInfo = pDebugInfo->next)
+    {
+      /* Check if this is a defined label.  This must be the case
+       * because there can be no jumps into a unit file.
+       */
+
+      sint32 value = poffGetPcForDefinedLabel(pDebugInfo->value);
+      if (value >= 0)
+	{
+	  /* Yes... replace the label reference with a text section offset. */
+
+	  pDebugInfo->value = value;
+	}
+      else
+	{
+	  fatal(ePOFFCONFUSION);
+	}
+    }
+
+  /* Then put all of the debug info back into the POFF object */
+
+  poffDiscardDebugFuncInfo(poffHandle);
+
+  for (pDebugInfo = pDebugInfoHead; pDebugInfo; pDebugInfo = pDebugInfo->next)
+    {
+      poffAddDebugFuncInfo(poffHandle, pDebugInfo);
+    }
+
+  /* Release the bufferred debug information */
+
+  pDebugInfo = pDebugInfoHead;
+  while (pDebugInfo)
+    {
+      pNextDebugInfo = pDebugInfo->next;
+      poffReleaseDebugFuncContainer(pDebugInfo);
+      pDebugInfo = pNextDebugInfo;
+    }
+}
+
+/**********************************************************************/
+
+static void pass5(poffHandle_t poffHandle)
+{
+  uint32 entryLabel;
+  sint32 entryOffset;
+  ubyte  fileType;
+
+  /* What kind of a file did we just process.  Was it a program file?
+   * or was it a unit file?
+   */
+
+  fileType = poffGetFileType(poffHandle);
+  if (fileType == FHT_PROGRAM)
+    {
+      /* It is a program file.  In this case, it must have a valid
+       * entry point label.  Get it.
+       */
+
+      entryLabel = poffGetEntryPoint(poffHandle);
+
+      /* Convert the label into a program data section offset */
+
+      entryOffset = poffGetPcForDefinedLabel(entryLabel);
+      if (entryOffset < 0)
+	{
+	  fatal(ePOFFCONFUSION);
+	}
+
+      /* Replace file header entry point with the program data
+       * section offset
+       */
+
+      poffSetEntryPoint(poffHandle, entryOffset);
+    }
+}
+
+/**********************************************************************
+ * Global Functions
+ **********************************************************************/
+
+void optFinalize(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle)
+{
+  /* Build label / line number reference table */
+
+  pass1(poffHandle, poffProgHandle);
+
+  /* Reset for next pass */
+
+  insn_ResetOpCodeRead(poffHandle);
+  insn_ResetTmpOpCodeWrite(poffProgHandle);
+
+  /* Now process all of the symbols */
+
+  pass2(poffHandle, poffProgHandle);
+
+  /* Reset for next pass */
+
+  insn_ResetOpCodeRead(poffHandle);
+
+  /* Generate relocation information and replace all label references
+   * in the code with actual program section data offsets.
+   */
+
+  pass3(poffHandle, poffProgHandle);
+
+  /* Fixed label references in the debug function information */
+
+  pass4(poffHandle);
+
+  /* Reset for next pass */
+
+  insn_ResetOpCodeRead(poffHandle);
+  insn_ResetTmpOpCodeWrite(poffProgHandle);
+
+  /* Finally, replace file header entry point with the I-space offset */
+
+  pass5(poffHandle);
+
+  /* Clean up after ourselves */
+
+  poffReleaseLabelReferences();
+}
+
+/**********************************************************************/
diff --git a/misc/pascal/insn32/popt/pfopt.h b/misc/pascal/insn32/popt/pfopt.h
new file mode 100644
index 0000000000..d792d11bff
--- /dev/null
+++ b/misc/pascal/insn32/popt/pfopt.h
@@ -0,0 +1,54 @@
+/***************************************************************************

+ * pfopt.h

+ * External Declarations associated with pfopt.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.

+ *

+ ***************************************************************************/

+

+#ifndef __PFOPT_H

+#define __PFOPT_H

+

+/***************************************************************************

+ * Included Files

+ ***************************************************************************/

+

+#include "pofflib.h"

+

+/***************************************************************************

+ * Global Function Prototypes

+ ***************************************************************************/

+

+extern void optFinalize(poffHandle_t poffHandle,

+			poffProgHandle_t poffProgHandle);

+

+#endif /* __PFOPT_H */

+

diff --git a/misc/pascal/insn32/popt/pjopt.c b/misc/pascal/insn32/popt/pjopt.c
new file mode 100644
index 0000000000..c10962d3c3
--- /dev/null
+++ b/misc/pascal/insn32/popt/pjopt.c
@@ -0,0 +1,449 @@
+/**********************************************************************

+ * pjopt.c

+ * Branch Optimizations

+ *

+ *   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 <stdio.h>

+

+#include "keywords.h"

+#include "pdefs.h"

+#include "pinsn32.h"

+

+#include "popt.h"

+#include "polocal.h"

+#include "pjopt.h"

+

+/**********************************************************************/

+

+int BranchOptimize (void)

+{

+  int nchanges = 0;

+  register int i;

+

+  TRACE(stderr, "[BranchOptimize]");

+

+  /* At least two pcodes are need to perform branch optimizations */

+

+  i = 0;

+  while (i < nops-1)

+    {

+      switch (pptr[i]->op)

+	{

+	case oNOT :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJNEQZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJEQUZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oNEG :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oJLTZ  :

+	      pptr[i+1]->op = oJGTZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJGTEZ :

+	      pptr[i+1]->op = oJLTEZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJGTZ  :

+	      pptr[i+1]->op = oJLTZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJLTEZ :

+	      pptr[i+1]->op = oJGTEZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oEQU  :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oNEQ;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJNEQ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJEQU;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oNEQ  :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oEQU;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJEQU;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJNEQ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oLT   :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oGTE;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJGTE;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJLT;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oGTE  :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oLT;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJLT;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJGTE;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oGT   :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oLTE;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJLTE;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJGT;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oLTE :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oGT;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJGT;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJLTE;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oEQUZ  :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oNEQZ;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJNEQZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJEQUZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oNEQZ  :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oEQUZ;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	    case oJNEQZ :

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oLTZ   :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oGTEZ;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJGTEZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJLTZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oGTEZ  :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oLTZ;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJLTZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJGTEZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oGTZ   :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oLTEZ;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJLTEZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJGTZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	case oLTEZ :

+	  switch (pptr[i+1]->op)

+	    {

+	    case oNOT :

+	      pptr[i]->op = oGTZ;

+	      deletePcode(i+1);

+	      nchanges++;

+	      break;

+

+	    case oJEQUZ :

+	      pptr[i+1]->op = oJGTZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    case oJNEQZ :

+	      pptr[i+1]->op = oJLTEZ;

+	      deletePcode(i);

+	      nchanges++;

+	      break;

+

+	    default     :

+	      i++;

+	      break;

+	    } /* end switch */

+	  break;

+

+	default     :

+	  i++;

+	  break;

+	} /* end switch */

+    } /* end while */

+  return (nchanges);

+

+} /* end BranchOptimize */

+

+/**********************************************************************/

+

diff --git a/misc/pascal/insn32/popt/pjopt.h b/misc/pascal/insn32/popt/pjopt.h
new file mode 100644
index 0000000000..4564ec6c6c
--- /dev/null
+++ b/misc/pascal/insn32/popt/pjopt.h
@@ -0,0 +1,44 @@
+/***************************************************************************

+ * pjopt.h

+ * External Declarations associated with pjopt.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.

+ *

+ ***************************************************************************/

+

+#ifndef __PJOPT_H

+#define __PJOPT_H

+

+extern int BranchOptimize ( void );

+

+#endif __PJOPT_H

+

+

diff --git a/misc/pascal/insn32/popt/plopt.c b/misc/pascal/insn32/popt/plopt.c
new file mode 100644
index 0000000000..d58f1a5548
--- /dev/null
+++ b/misc/pascal/insn32/popt/plopt.c
@@ -0,0 +1,214 @@
+/**********************************************************************

+ * plopt.c

+ * Load/Store Optimizations

+ *

+ *   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 <stdio.h>

+

+#include "keywords.h"

+#include "pdefs.h"

+#include "pinsn32.h"

+

+#include "popt.h"

+#include "polocal.h"

+#include "plopt.h"

+

+/**********************************************************************/

+

+int LoadOptimize(void)

+{

+  uint32 val;

+  int nchanges = 0;

+  register int i;

+

+  TRACE(stderr, "[LoadOptimize]");

+

+  /* At least two pcodes are need to perform Load optimizations */

+

+  i = 0;

+  while (i < nops-1)

+    {

+      switch (GETOP(pptr[i]))

+	{

+	  /* Eliminate duplicate loads */

+

+	case oLDSH   :

+	  if ((GETOP(pptr[i+1])  == oLDSH) &&

+	      (GETARG(pptr[i+1]) == GETARG(pptr[i])))

+	    {

+	      PUTOP(pptr[i+1], oDUP);

+	      PUTARG(pptr[i+1], 0);

+	      nchanges++;

+	      i += 2;

+	    } /* end if */

+	  else i++;

+	  break;

+

+	  /* Convert loads indexed by a constant to unindexed loads */

+

+	case oPUSH  :

+	  /* Get the index value */

+

+	  val = (sint32)GETARG(pptr[i]);

+

+	  /* If the following instruction is a load, add the constant

+	   * index value to the address and switch the opcode to the

+	   * unindexed form.

+	   */

+

+	  if (GETOP(pptr[i+1]) == oLDSXH) 

+	    {

+	      PUTOP(pptr[i+1], oLDSH);

+	      val += GETARG(pptr[i+1]);

+	      PUTARG(pptr[i+1], val);

+	      deletePcode (i);

+	      nchanges++;

+	    } /* end if */

+	  else if (GETOP(pptr[i+1]) == oLASX)

+	    {

+	      PUTOP(pptr[i+1], oLAS);

+	      val += GETARG(pptr[i+1]);

+	      PUTARG(pptr[i+1], val);

+	      deletePcode (i);

+	      nchanges++;

+	    } /* end else if */

+	  else if (GETOP(pptr[i+1]) == oLDSXB)

+	    {

+	      PUTOP(pptr[i+1], oLDSB);

+	      val += GETARG(pptr[i+1]);

+	      PUTARG(pptr[i+1], val);

+	      deletePcode (i);

+	      nchanges++;

+	    } /* end if */

+	  else if (GETOP(pptr[i+1]) == oLDSXM)

+	    {

+	      PUTOP(pptr[i+1], oLDSM);

+	      val += GETARG(pptr[i+1]);

+	      PUTARG(pptr[i+1], val);

+	      deletePcode (i);

+	      nchanges++;

+	    } /* end if */

+	  else i++;

+	  break;

+

+	default     :

+	  i++;

+	  break;

+	} /* end switch */

+    } /* end while */

+  return (nchanges);

+} /* end LoadOptimize */

+

+/**********************************************************************/

+int StoreOptimize (void)

+{

+  uint32 val;

+  int nchanges = 0;

+  register int i;

+

+  TRACE(stderr, "[StoreOptimize]");

+

+  /* At least two pcodes are need to perform the following Store */

+  /* optimizations */

+

+  i = 0;

+  while (i < nops-1)

+    {

+      switch (GETOP(pptr[i]))

+	{

+	  /* Eliminate store followed by load */

+

+	case oSTSH :

+	  if ((GETOP(pptr[i+1])  == oLDSH) &&

+	      (GETARG(pptr[i+1]) == GETARG(pptr[i])))

+	    {

+	      PUTOP(pptr[i+1], oSTSH);

+	      PUTOP(pptr[i], oDUP);

+	      PUTARG(pptr[i], 0);

+	      nchanges++;

+	      i += 2;

+	    } /* end if */

+	  else i++;

+	  break;

+

+	  /* Convert stores indexed by a constant to unindexed stores */

+	case oPUSH :

+	  /* Get the index value */

+

+	  val = (sint32)GETARG(pptr[i]);

+

+	  /* If the following instruction is a store, add the constant

+	   * index value to the address and switch the opcode to the

+	   * unindexed form.

+	   */

+

+	  if (i < nops-2)

+	    {

+	      if (GETOP(pptr[i+2]) == oSTSXH)

+		{

+		  PUTOP(pptr[i+2], oSTSH);

+		  val += GETARG(pptr[i+2]);

+		  PUTARG(pptr[i+2], val);

+		  deletePcode (i);

+		  nchanges++;

+		} /* end if */

+	      else if (GETOP(pptr[i+2]) == oSTSXB)

+		{

+		  PUTOP(pptr[i+2], oSTSB);

+		  val += GETARG(pptr[i+2]);

+		  PUTARG(pptr[i+2], val);

+		  deletePcode (i);

+		  nchanges++;

+		} /* end if */

+	      else i++;

+	    } /* end if */

+	  else i++;

+	  break;

+

+	default     : 

+	  i++;

+	  break;

+	} /* end switch */

+    } /* end while */

+

+  return (nchanges);

+

+} /* end StoreOptimize */

+

+/**********************************************************************/

+

diff --git a/misc/pascal/insn32/popt/plopt.h b/misc/pascal/insn32/popt/plopt.h
new file mode 100644
index 0000000000..05596cd45f
--- /dev/null
+++ b/misc/pascal/insn32/popt/plopt.h
@@ -0,0 +1,43 @@
+/***************************************************************************

+ * plopt.h

+ * External Declarations associated with plopt.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.

+ *

+ ***************************************************************************/

+

+#ifndef __PLOPT_H

+#define __PLOPT_H

+

+extern int LoadOptimize ( void );

+extern int StoreOptimize ( void );

+

+#endif /* __PLOPT_H */

diff --git a/misc/pascal/insn32/popt/polocal.c b/misc/pascal/insn32/popt/polocal.c
new file mode 100644
index 0000000000..551913a490
--- /dev/null
+++ b/misc/pascal/insn32/popt/polocal.c
@@ -0,0 +1,271 @@
+/**********************************************************************

+ * polocal.c

+ * P-Code Local Optimizer

+ *

+ *   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 <stdio.h>

+

+#include "keywords.h"

+#include "podefs.h"

+#include "pinsn32.h"

+

+#include "pofflib.h"

+#include "paslib.h"

+#include "pinsn.h"

+#include "pcopt.h"

+#include "plopt.h"

+#include "pjopt.h"

+#include "polocal.h"

+

+/**********************************************************************

+ * Private Function Prototypes

+ **********************************************************************/

+

+static void initPTable        (void);

+static void putPCodeFromTable (void);

+static void setupPointer      (void);

+

+/**********************************************************************

+ * Global Variables

+ **********************************************************************/

+

+OPTYPE  ptable [WINDOW];                /* Pcode Table */

+OPTYPE *pptr   [WINDOW];                /* Valid Pcode Pointers */

+

+int     nops    = 0;                    /* No. Valid Pcode Pointers */

+int     end_out = 0;                    /* 1 = oEND pcode has been output */

+

+/**********************************************************************

+ * Private Variables

+ **********************************************************************/

+

+static poffHandle_t     myPoffHandle;         /* Handle to POFF object */

+static poffProgHandle_t myPoffProgHandle;/* Handle to temporary POFF object */

+

+/**********************************************************************

+ * Global Functions

+ **********************************************************************/

+

+/***********************************************************************/

+

+void localOptimization(poffHandle_t poffHandle,

+		       poffProgHandle_t poffProgHandle)

+{

+  int nchanges;

+

+  TRACE(stderr, "[pass2]");

+

+  /* Save the handles for use by other, private functions */

+

+  myPoffHandle     = poffHandle;

+  myPoffProgHandle = poffProgHandle;

+

+  /* Initialization */

+

+  initPTable();

+

+  /* Outer loop traverse the file op-code by op-code until the oEND P-Code

+   * has been output.  NOTE:  it is assumed throughout that oEND is the 

+   * final P-Code in the program data section.

+   */

+

+  while (!(end_out))

+    {

+      /* The inner loop optimizes the buffered P-Codes until no further

+       * changes can be made.  Then the outer loop will advance the buffer

+       * by one P-Code

+       */

+

+      do

+	{

+	  nchanges  = unaryOptimize ();

+	  nchanges += binaryOptimize();

+	  nchanges += BranchOptimize();

+	  nchanges += LoadOptimize();

+	  nchanges += StoreOptimize();

+	} while (nchanges);

+

+      putPCodeFromTable();

+    }

+}

+

+/***********************************************************************/

+

+void deletePcode(int delIndex)

+{

+  TRACE(stderr, "[deletePcode]");

+

+  PUTOP(pptr[delIndex], oNOP);

+  PUTARG(pptr[delIndex], 0);

+  setupPointer();

+}

+

+/**********************************************************************/

+

+void deletePcodePair(int delIndex1, int delIndex2)

+{

+  TRACE(stderr, "[deletePcodePair]");

+

+  PUTOP(pptr[delIndex1],  oNOP);

+  PUTARG(pptr[delIndex1], 0);

+  PUTOP(pptr[delIndex2],  oNOP);

+  PUTARG(pptr[delIndex2], 0);

+  setupPointer();

+}

+

+/**********************************************************************

+ * Private Functions

+ **********************************************************************/

+

+/***********************************************************************/

+

+static void putPCodeFromTable(void)

+{

+  register int i;

+

+  TRACE(stderr, "[putPCodeFromTable]");

+

+  /* Transfer all buffered P-Codes (except NOPs) to the optimized file */

+  do

+    {

+      if ((GETOP(&ptable[0]) != oNOP) && !(end_out))

+	{

+	  insn_AddTmpOpCode(myPoffProgHandle, &ptable[0]);

+	  end_out = (GETOP(&ptable[0]) == oEND);

+	}

+

+      /* Move all P-Codes down one slot */

+

+      for (i = 1; i < WINDOW; i++)

+	{

+	  ptable[i-1] = ptable[i];

+	}

+

+      /* Then fill the end slot with a new P-Code from the input file */

+

+      insn_GetOpCode(myPoffHandle, &ptable[WINDOW-1]);

+

+    } while (GETOP(&ptable[0]) == oNOP);

+  setupPointer();

+}

+

+/**********************************************************************/

+

+static void setupPointer(void)

+{

+  register int pindex;

+

+  TRACE(stderr, "[setupPointer]");

+

+  for (pindex = 0; pindex < WINDOW; pindex++)

+    pptr[pindex] = (OPTYPE *) NULL;

+

+  nops = 0; 

+  for (pindex = 0; pindex < WINDOW; pindex++)

+    {

+      switch (GETOP(&ptable[pindex]))

+	{

+	  /* Terminate list when a break from sequential logic is

+	   * encountered

+	   */

+

+	case oRET   :

+	case oEND   :

+	case oJMP   :

+	case oLABEL :

+	case oPCAL  :

+	  return;

+

+	  /* Terminate list when a condition break from sequential logic is

+	   * encountered but include the conditional branch in the list

+	   */

+

+	case oJEQUZ :

+	case oJNEQZ :

+	case oJLTZ  :

+	case oJGTEZ :

+	case oJGTZ  :

+	case oJLTEZ :

+	  pptr[nops] = &ptable[pindex];

+	  nops++;

+	  return;

+

+	  /* Skip over NOPs and comment class pcodes */

+

+	case oNOP   :

+	case oLINE  :

+	  break;

+

+	  /* Include all other pcodes in the optimization list and continue */

+

+	default     :

+	  pptr[nops] = &ptable[pindex];

+	  nops++;

+	}

+    }

+}

+

+/**********************************************************************/

+

+static void initPTable(void)

+{

+  register int i;

+

+  TRACE(stderr, "[intPTable]");

+

+  /* Skip over leading pcodes.  NOTE:  assumes executable begins after

+   * the first oLABEL pcode

+   */

+

+  do

+    {

+      insn_GetOpCode(myPoffHandle, &ptable[0]);

+      insn_AddTmpOpCode(myPoffProgHandle, &ptable[0]);

+    }

+  while ((GETOP(&ptable[0]) != oLABEL) && (GETOP(&ptable[0]) != oEND));

+

+  /* Fill the pcode window and setup pointers to working section */

+

+  for (i = 0; i < WINDOW; i++)

+    {

+      insn_GetOpCode(myPoffHandle, &ptable[i]);

+    }

+  setupPointer();

+}

+

+/***********************************************************************/

diff --git a/misc/pascal/insn32/popt/polocal.h b/misc/pascal/insn32/popt/polocal.h
new file mode 100644
index 0000000000..a46e4dc9c5
--- /dev/null
+++ b/misc/pascal/insn32/popt/polocal.h
@@ -0,0 +1,73 @@
+/***************************************************************************

+ * polocal.h

+ * External Declarations associated with polocal.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.

+ *

+ ***************************************************************************/

+

+#ifndef __POLOCAL_H

+#define __POLOCAL_H

+

+/***************************************************************************

+* Included Files

+****************************************************************************/

+

+#include "keywords.h"

+#include "pdefs.h"

+#include "pofflib.h"

+

+/***************************************************************************

+* Definitions

+****************************************************************************/

+

+#define WINDOW             10           /* size of optimization window */

+

+/***************************************************************************

+* Global Function Prototypes

+****************************************************************************/

+

+extern void localOptimization(poffHandle_t poffHandle,

+			      poffProgHandle_t poffProgHandle);

+extern void deletePcode      (int delIndex);

+extern void deletePcodePair  (int delIndex1, int delIndex2);

+

+/***************************************************************************

+ * Global Variables

+ ****************************************************************************/

+

+extern OPTYPE  ptable [WINDOW];        /* Pcode Table */

+extern OPTYPE *pptr   [WINDOW];        /* Valid Pcode Pointers */

+

+extern int     nops;                   /* No. Valid Pcode Pointers */

+extern int     end_out;                /* 1 = oEND pcode has been output */

+

+#endif /* __PLOCAL_H */

diff --git a/misc/pascal/insn32/popt/popt.c b/misc/pascal/insn32/popt/popt.c
new file mode 100644
index 0000000000..cf8c76ce34
--- /dev/null
+++ b/misc/pascal/insn32/popt/popt.c
@@ -0,0 +1,327 @@
+/**********************************************************************

+ * popt.c

+ * P-Code Optimizer Main Logic

+ *

+ *   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 <stdio.h>

+#include <stdlib.h>

+#include <unistd.h>

+

+#include "keywords.h"

+#include "podefs.h"

+#include "paslib.h"

+#include "pofflib.h"

+

+#include "pinsn.h"

+#include "popt.h"

+#include "psopt.h"

+#include "polocal.h"

+#include "pfopt.h"

+

+/**********************************************************************

+ * Private Function Prototypes

+ **********************************************************************/

+

+static void showUsage         (const char *progname, int errcode);

+static void readPoffFile      (const char *filename);

+static void pass1             (void);

+static void pass2             (void);

+static void pass3             (void);

+static void writePoffFile     (const char *filename);

+

+/**********************************************************************

+ * Global Variables

+ **********************************************************************/

+

+/**********************************************************************

+ * Private Variables

+ **********************************************************************/

+

+static poffHandle_t poffHandle; /* Handle to POFF object */

+static int no_resolve = 0;

+

+/**********************************************************************

+ * Global Functions

+ **********************************************************************/

+

+/***********************************************************************/

+

+int main(int argc, char *argv[], char *envp[])

+{

+  const char *outfilename;

+  TRACE(stderr, "[main]");

+  int option;

+

+  /* Process command line argruments */

+

+  while ((option = getopt(argc, argv, "rh")) > 0)

+  {

+    switch (option)

+      {

+      case 'r' :

+        no_resolve++;

+	break;

+      case 'h' :

+	showUsage(argv[0], 0);

+      default:

+	fprintf(stderr, "Unrecognized option\n");

+	showUsage(argv[0], -1);

+      }

+  }

+

+  /* Check for existence of filename argument */

+

+  if (optind != argc - 1)

+    {

+      printf("Filename required at end of command line.\n");

+      showUsage(argv[0], -1);

+    } /* end if */

+

+  /* Read the POFF file into memory */

+

+  outfilename = argv[optind];

+  readPoffFile(outfilename);

+

+  /* Performs pass1 optimization */

+

+  pass1();

+

+  /* Performs pass2 optimization */

+

+  insn_ResetOpCodeRead(poffHandle);

+  pass2();

+

+  if (!no_resolve)

+    {

+      /* Create final section offsets and relocation entries */

+

+      insn_ResetOpCodeRead(poffHandle);

+      pass3();

+    }

+

+  /* Write the POFF file */

+

+  writePoffFile(outfilename);

+  return 0;

+

+} /* End main */

+

+/**********************************************************************

+ * Private Functions

+ **********************************************************************/

+

+/***********************************************************************/

+

+static void showUsage(const char *progname, int errcode)

+{

+  fprintf(stderr, "USAGE:\n");

+  fprintf(stderr, "  %s -h\n", progname);

+  fprintf(stderr, "  %s [-r] <poff-filename>\n", progname);

+  fprintf(stderr, "WHERE:\n");

+  fprintf(stderr, "  -r:  Disables label resolution (default: labels resolved)\n");

+  fprintf(stderr, "  -h:  Shows this message\n");

+  exit(errcode);

+}

+

+/***********************************************************************/

+

+static void readPoffFile(const char *filename)

+{

+  char    objname [FNAME_SIZE+1];

+  FILE   *objFile;

+  int     errcode;

+

+  TRACE(stderr, "[readPoffFile]");

+

+  /* Open the pass1 POFF object file -- Use .o1 extension */

+

+  (void)extension(filename, "o1", objname, 1);

+  if (!(objFile = fopen(objname, "rb")))

+    {

+      printf("Error Opening %s\n", objname);

+      exit(1);

+    } /* end if */

+

+  /* Get a handle to a POFF input object */

+

+  poffHandle = poffCreateHandle();

+  if (!poffHandle)

+    {

+      printf("Could not get POFF handle\n");

+      exit(1);

+    } /* end if */

+

+  /* Read the POFF file into memory */

+

+  errcode = poffReadFile(poffHandle, objFile);

+  if (errcode != 0)

+    {

+      printf("Could not read POFF file, errcode=0x%02x\n", errcode);

+      exit(1);

+    }

+

+  /* Close the input file */

+

+  fclose(objFile);

+} /* end pass1 */

+

+/***********************************************************************/

+

+static void pass1(void)

+{

+  poffProgHandle_t poffProgHandle; /* Handle to temporary POFF object */

+

+  TRACE(stderr, "[pass1]");

+

+  /* Create a handle to a temporary object to store new POFF program

+   * data.

+   */

+

+  poffProgHandle = poffCreateProgHandle();

+  if (!poffProgHandle)

+    {

+      printf("Could not get POFF handle\n");

+      exit(1);

+    } /* end if */

+

+  /* Clean up garbage left from the wasteful string stack logic */

+

+  stringStackOptimize(poffHandle, poffProgHandle);

+

+  /* Replace the original program data with the new program data */

+

+  poffReplaceProgData(poffHandle, poffProgHandle);

+

+  /* Release the temporary POFF object */

+

+  poffDestroyProgHandle(poffProgHandle);

+} /* end pass1 */

+

+/***********************************************************************/

+

+static void pass2(void)

+{

+  poffProgHandle_t poffProgHandle; /* Handle to temporary POFF object */

+

+  TRACE(stderr, "[pass2]");

+

+  /* Create a handle to a temporary object to store new POFF program

+   * data.

+   */

+

+  poffProgHandle = poffCreateProgHandle();

+  if (!poffProgHandle)

+    {

+      printf("Could not get POFF handle\n");

+      exit(1);

+    } /* end if */

+

+  /* Perform Local Optimizatin Initialization */

+

+  localOptimization(poffHandle, poffProgHandle);

+

+  /* Replace the original program data with the new program data */

+

+  poffReplaceProgData(poffHandle, poffProgHandle);

+

+  /* Release the temporary POFF object */

+

+  poffDestroyProgHandle(poffProgHandle);

+} /* end pass2 */

+

+/***********************************************************************/

+

+static void pass3 (void)

+{

+  poffProgHandle_t poffProgHandle; /* Handle to temporary POFF object */

+  TRACE(stderr, "[pass3]");

+

+  /* Create a handle to a temporary object to store new POFF program

+   * data.

+   */

+

+  poffProgHandle = poffCreateProgHandle();

+  if (!poffProgHandle)

+    {

+      printf("Could not get POFF handle\n");

+      exit(1);

+    } /* end if */

+

+  /* Finalize program section, create relocation and line number

+   * sections.

+   */

+

+  optFinalize(poffHandle, poffProgHandle);

+

+  /* Release the temporary POFF object */

+

+  poffDestroyProgHandle(poffProgHandle);

+}

+

+/***********************************************************************/

+

+static void writePoffFile(const char *filename)

+{

+  char    optname [FNAME_SIZE+1];

+  FILE   *optFile;

+

+  TRACE(stderr, "[writePoffFile]");

+

+  /* Open optimized p-code file -- Use .o extension */

+

+  (void)extension(filename, "o", optname, 1);

+  if (!(optFile = fopen(optname, "wb")))

+    {

+      printf("Error Opening %s\n", optname);

+      exit(1);

+    } /* end if */

+

+  /* Then write the new POFF file */

+

+  poffWriteFile(poffHandle, optFile);

+

+  /* Destroy the POFF object */

+

+  poffDestroyHandle(poffHandle);

+

+  /* Close the files used on writePoffFile */

+

+  (void)fclose(optFile);

+} /* end writePoffFile */

+

+/***********************************************************************/

diff --git a/misc/pascal/insn32/popt/popt.h b/misc/pascal/insn32/popt/popt.h
new file mode 100644
index 0000000000..9cd151a89d
--- /dev/null
+++ b/misc/pascal/insn32/popt/popt.h
@@ -0,0 +1,52 @@
+/***************************************************************************

+ * popt.h

+ * External Declarations associated with popt.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.

+ *

+ ***************************************************************************/

+

+#ifndef __POPT_H

+#define __POPT_H

+

+/***************************************************************************

+* Included Files

+****************************************************************************/

+

+/***************************************************************************

+ * Global Variables

+ ****************************************************************************/

+

+/***************************************************************************

+* Global Function Prototypes

+****************************************************************************/

+

+#endif /* __POPT_H */

diff --git a/misc/pascal/insn32/popt/psopt.c b/misc/pascal/insn32/popt/psopt.c
new file mode 100644
index 0000000000..6794115c83
--- /dev/null
+++ b/misc/pascal/insn32/popt/psopt.c
@@ -0,0 +1,384 @@
+/**********************************************************************
+ * psopt.c
+ * String Stack Optimizaitons
+ *
+ *   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.
+ *
+ **********************************************************************/
+
+/* The statement generation logic generates a PUSHS and POPS around
+ * every statement.  These instructions save and restore the string
+ * stack pointer registers.  However, only some statements actually
+ * modify the string stack.  So the first major step in the optimatization
+ * process is to retain only PUSHS and POPS statements that are
+ * actually required.
+ */
+
+/**********************************************************************
+ * Included Files
+ **********************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "keywords.h"
+#include "pdefs.h"
+#include "pedefs.h"
+#include "pinsn32.h"
+#include "pxdefs.h"
+
+#include "popt.h"
+#include "psopt.h"
+
+/**********************************************************************
+ * Definitions
+ **********************************************************************/
+
+#define PBUFFER_SIZE 1024
+#define NPBUFFERS       8
+
+/**********************************************************************
+ * Private Data
+ **********************************************************************/
+
+static ubyte *pbuffer[NPBUFFERS];
+static int    nbytes_in_pbuffer[NPBUFFERS];
+static int    current_level = -1;
+static int    inch;
+
+/**********************************************************************
+ * Private Function Prototypes
+ **********************************************************************/
+
+static inline void putbuf(int c, poffProgHandle_t poffProgHandle);
+static inline void flushc(int c, poffProgHandle_t poffProgHandle);
+static inline void flushbuf(poffProgHandle_t poffProgHandle);
+static void dopush(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle);
+static void dopop(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle);
+
+/**********************************************************************
+ * Private Inline Functions
+ **********************************************************************/
+
+static inline void putbuf(int c, poffProgHandle_t poffProgHandle)
+{
+  int dlvl = current_level;
+
+  if (dlvl < 0)
+    {
+      /* No PUSHS encountered.  Write byte directly to output */
+
+      poffAddTmpProgByte(poffProgHandle, (ubyte)c);
+    }
+  else
+    {
+      /* PUSHS encountered.  Write byte into buffer associated with
+       * nesting level.
+       */
+
+      int idx                 = nbytes_in_pbuffer[dlvl];
+      ubyte *dest             = pbuffer[dlvl] + idx;
+      *dest                   = c;
+      nbytes_in_pbuffer[dlvl] = idx + 1;
+    }
+}
+
+static inline void flushc(int c, poffProgHandle_t poffProgHandle)
+{
+  if (current_level > 0)
+    {
+      /* Nested PUSHS encountered. Write byte into buffer associated
+       * with the previous nesting level.
+       */
+
+      int dlvl                = current_level - 1;
+      int idx                 = nbytes_in_pbuffer[dlvl];
+      ubyte *dest             = pbuffer[dlvl] + idx;
+      *dest                   = c;
+      nbytes_in_pbuffer[dlvl] = idx + 1;
+    }
+  else
+    {
+      /* Only one PUSHS encountered.  Write directly to the output
+       * buffer
+       */
+
+      poffAddTmpProgByte(poffProgHandle, (ubyte)c);
+    }
+}
+
+static inline void flushbuf(poffProgHandle_t poffProgHandle)
+{
+  int errCode;
+  int slvl = current_level;
+
+  if (nbytes_in_pbuffer[slvl] > 0)
+    {
+      if (current_level > 0)
+	{
+	  /* Nested PUSHS encountered. Flush buffer into buffer associated
+	   * with the previous nesting level.
+	   */
+
+	  int dlvl    = slvl - 1;
+	  ubyte *src  = pbuffer[slvl];
+	  ubyte *dest = pbuffer[dlvl] + nbytes_in_pbuffer[dlvl];
+
+	  memcpy(dest, src, nbytes_in_pbuffer[slvl]);
+	  nbytes_in_pbuffer[dlvl] += nbytes_in_pbuffer[slvl];
+	}
+      else
+	{
+	  /* Only one PUSHS encountered.  Flush directly to the output
+	   * buffer
+	   */
+
+	  errCode = poffWriteTmpProgBytes(pbuffer[0], nbytes_in_pbuffer[0],
+					  poffProgHandle);
+
+	  if (errCode != eNOERROR)
+	    {
+	      printf("Error writing to file: %d\n", errCode);
+	      exit(1);
+	    }
+	}
+    }
+  nbytes_in_pbuffer[slvl] = 0;
+}
+
+/**********************************************************************
+ * Private Functions
+ **********************************************************************/
+
+static void dopush(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle)
+{
+  int opcode;
+
+  while (inch != EOF)
+    {
+      /* Search for a PUSHS opcode */
+
+      if (inch != oPUSHS)
+	{
+	  /* Its not PUSHS, just echo to the output file/buffer */
+
+	  putbuf(inch, poffProgHandle);
+
+	  /* Get the next byte from the input stream */
+
+	  opcode = inch;
+	  inch = poffGetProgByte(poffHandle);
+
+	  /* Check for a 32-bit argument */
+
+	  if ((opcode & o32) != 0)
+	    {
+	      /* Echo the 32-bits of the argument */
+
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	    }
+	}
+      else
+	{
+	  /* We have found PUSHS.  No search for the next occurrence
+	   * of either and instruction that increments the string
+	   * stack or for the matching POPS
+	   */
+
+	  current_level++;
+	  dopop(poffHandle, poffProgHandle);
+	  current_level--;
+	}
+    }
+}
+
+static void dopop(poffHandle_t poffHandle, poffProgHandle_t poffProgHandle)
+{
+  /* We have found PUSHS.  No search for the next occurrence
+   * of either and instruction that increments the string
+   * stack or for the matching POPS
+   */
+
+  /* Skip over the PUSHS for now */
+
+  inch = poffGetProgByte(poffHandle);
+
+  while (inch != EOF)
+    {
+      /* Did we encounter another PUSHS? */
+
+      if (inch == oPUSHS)
+	{
+	  /* Yes... recurse to handle it */
+
+	  current_level++;
+	  dopop(poffHandle, poffProgHandle);
+	  current_level--;
+	}
+
+      else if (inch == oPOPS)
+	{
+	  /* Flush the buffered data without the PUSHS */
+
+	  flushbuf(poffProgHandle);
+
+	  /* And discard the matching POPS */
+
+	  inch = poffGetProgByte(poffHandle);
+	  break;
+	}
+      else if (inch == oLIB)
+	{
+	  uint32 arg32;
+	  unsigned int tmp;
+
+	  /* Get the 32-bit argument from the big endian data stream */
+
+	  tmp = poffGetProgByte(poffHandle);
+	  arg32 = tmp << 24;
+	  putbuf(tmp, poffProgHandle);
+
+	  tmp = poffGetProgByte(poffHandle);
+	  arg32 |= tmp << 16;
+	  putbuf(tmp, poffProgHandle);
+
+	  tmp = poffGetProgByte(poffHandle);
+	  arg32 |= tmp << 8;
+	  putbuf(tmp, poffProgHandle);
+
+	  tmp = poffGetProgByte(poffHandle);
+	  arg32 |= tmp;
+	  putbuf(tmp, poffProgHandle);
+
+	  inch   = poffGetProgByte(poffHandle);
+
+	  /* Is it LIB MKSTK? MKSTKSTR? or MKSTKC? */
+
+	  if ((arg32 == lbMKSTK) ||
+	      (arg32 == lbMKSTKSTR) ||
+	      (arg32 == lbMKSTKC))
+	    {
+	      /* Flush the buffered data with the PUSHS */
+
+	      flushc(oPUSHS, poffProgHandle);
+	      flushbuf(poffProgHandle);
+
+	      /* And break out of the loop to search for
+	       * the next PUSHS
+	       */
+
+	      break;
+	    }
+	}
+      else
+	{
+	  int opcode;
+
+	  /* Something else.  Put it in the buffer */
+
+	  putbuf(inch, poffProgHandle);
+
+	  /* Get the next byte from the input stream */
+
+	  opcode = inch;
+	  inch = poffGetProgByte(poffHandle);
+
+	  /* Check for a 32-bit argument */
+
+	  if (opcode & o32 != 0)
+	    {
+	      /* Buffer the remaining 24-bits of the argument */
+
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	      putbuf(inch, poffProgHandle);
+	      inch = poffGetProgByte(poffHandle);
+	    }
+	}
+    }
+}
+
+/**********************************************************************
+ * Global Functions
+ **********************************************************************/
+
+void stringStackOptimize(poffHandle_t poffHandle,
+			 poffProgHandle_t poffProgHandle)
+{
+  int i;
+
+  /* Allocate an array of buffers to hold pcode data */
+
+  for (i = 0; i < NPBUFFERS; i++)
+    {
+      pbuffer[i] = (ubyte*)malloc(PBUFFER_SIZE);
+      if (pbuffer[i] == NULL)
+	{
+	  printf("Failed to allocate pcode buffer\n");
+	  exit(1);
+	}
+      nbytes_in_pbuffer[i] = 0;
+    }
+
+  /* Prime the search logic */
+
+  inch = poffGetProgByte(poffHandle);
+  current_level = -1;
+
+  /* And parse the input file to the output file, removing unnecessary string
+   * stack operations.
+   */
+
+  dopush(poffHandle, poffProgHandle);
+
+  /* Release the buffers */
+
+  for (i = 0; i < NPBUFFERS; i++)
+    {
+      free(pbuffer[i]);
+      pbuffer[i] = NULL;
+      nbytes_in_pbuffer[i] = 0;
+    }
+}
+
+/**********************************************************************/
diff --git a/misc/pascal/insn32/popt/psopt.h b/misc/pascal/insn32/popt/psopt.h
new file mode 100644
index 0000000000..c174aac8ea
--- /dev/null
+++ b/misc/pascal/insn32/popt/psopt.h
@@ -0,0 +1,54 @@
+/***************************************************************************

+ * psopt.h

+ * External Declarations associated with psopt.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.

+ *

+ ***************************************************************************/

+

+#ifndef __PSOPT_H

+#define __PSOPT_H

+

+/***************************************************************************

+ * Included Files

+ ***************************************************************************/

+

+#include "pofflib.h"

+

+/***************************************************************************

+ * Global Function Prototypes

+ ***************************************************************************/

+

+extern void stringStackOptimize(poffHandle_t poffHandle,

+				poffProgHandle_t poffProgHandle);

+

+#endif /* __PSOPT_H */

+