I learned how to spell PSEUDO

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5010 7fd9a85b-ad96-42d3-883c-3090e2eb8679

35 files changed, 1644 insertions, 1645 deletions

diff --git a/apps/examples/pashello/README.txt b/apps/examples/pashello/README.txt
index b976f18cf3..b198469665 100644
--- a/apps/examples/pashello/README.txt
+++ b/apps/examples/pashello/README.txt
@@ -30,5 +30,5 @@ device.c
 
   device.c implements a simple device driver.  Reads from this device
   will access the in-memory copy of hello.pex  This device driver is
-  registered as /dev/pashello in the psuedo filesystem.
+  registered as /dev/pashello in the pseudo filesystem.
 
diff --git a/apps/nshlib/README.txt b/apps/nshlib/README.txt
index a6cb2d7d7d..d8edd89695 100644
--- a/apps/nshlib/README.txt
+++ b/apps/nshlib/README.txt
@@ -505,14 +505,14 @@ o mkfatfs <path>
 
   Format a fat file system on the block device specified by path.
   NSH provides this command to access the mkfatfs() NuttX API.
-  This block device must reside in the NuttX psuedo filesystem and
+  This block device must reside in the NuttX pseudo filesystem and
   must have been created by some call to register_blockdriver() (see
   include/nuttx/fs/fs.h).
 
 o mkfifo <path>
 
   Creates a FIFO character device anywhere in the pseudo file system,
-  creating whatever psuedo directories that may be needed to complete
+  creating whatever pseudo directories that may be needed to complete
   the full path.  By convention, however, device drivers are place in
   the standard /dev directory. After it is created, the FIFO device
   may be used as any other device driver. NSH provides this command
@@ -584,7 +584,7 @@ o mount [-t <fstype> <block-device> <dir-path>]
 
   If the mount parameters are provied on the command after the 'mount'
   command, then the 'mount' command will mount a file system in the
-  NuttX psuedo-file system.  'mount' performs a three way association,
+  NuttX pseudo-file system.  'mount' performs a three way association,
   binding:
 
     File system.  The '-t <fstype>' option identifies the type of
@@ -592,19 +592,19 @@ o mount [-t <fstype> <block-device> <dir-path>]
       of this writing, vfat is the only supported value for <fstype>
 
     Block Device.  The <block-device> argument is the full or relative
-      path to a block driver inode in the psuedo filesystem.  By convention,
+      path to a block driver inode in the pseudo filesystem.  By convention,
       this is a name under the /dev sub-directory.  This <block-device>
       must have been previously formatted with the same file system
       type as specified by <fstype>
 
-    Mount Point.  The mount point is the location in the psuedo file
+    Mount Point.  The mount point is the location in the pseudo file
       system where the mounted volume will appear.  This mount point
-      can only reside in the NuttX psuedo filesystem.  By convention, this
+      can only reside in the NuttX pseudo filesystem.  By convention, this
       mount point is a subdirectory under /mnt.  The mount command will
-      create whatever psuedo directories that may be needed to complete
+      create whatever pseudo directories that may be needed to complete
       the full path but the full path must not already exist.
 
-  After the volume has been mounted in the NuttX psuedo file
+  After the volume has been mounted in the NuttX pseudo file
   system, it may be access in the same way as other objects in the
   file system.
 
diff --git a/apps/nshlib/nsh_parse.c b/apps/nshlib/nsh_parse.c
index 0494443979..165f842fc3 100644
--- a/apps/nshlib/nsh_parse.c
+++ b/apps/nshlib/nsh_parse.c
@@ -88,12 +88,12 @@
 #  define MAX_ARGV_ENTRIES (NSH_MAX_ARGUMENTS+4)
 #endif
 
-/* Help layout */
+/* Help command summary layout */
 
 #define MAX_CMDLEN    12
-#define CMDS_PER_LINE 5
+#define CMDS_PER_LINE 6
 
-#define NUM_CMDS      (sizeof(g_cmdmap)/sizeof(struct cmdmap_s))
+#define NUM_CMDS      ((sizeof(g_cmdmap)/sizeof(struct cmdmap_s)) - 1)
 #define NUM_CMD_ROWS  ((NUM_CMDS + (CMDS_PER_LINE-1)) / CMDS_PER_LINE)
 
 /****************************************************************************
@@ -443,7 +443,7 @@ static inline void help_cmdlist(FAR struct nsh_vtbl_s *vtbl)
   for (i = 0; i < NUM_CMD_ROWS; i++)
     {
       nsh_output(vtbl, "  ");
-      for (j = 0, k = i; j < CMDS_PER_LINE && k < NUM_CMDS; j++, k += CMDS_PER_LINE)
+      for (j = 0, k = i; j < CMDS_PER_LINE && k < NUM_CMDS; j++, k += NUM_CMD_ROWS)
         {
           nsh_output(vtbl, "%-12s", g_cmdmap[k].cmd);
         }
@@ -516,6 +516,7 @@ static int help_cmd(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd)
         {
           /* Yes... show it */
 
+          nsh_output(vtbl, "%s usage:", cmd);
           help_showcmd(vtbl, cmdmap);
           return OK;
         }
@@ -574,14 +575,14 @@ static inline void help_builtins(FAR struct nsh_vtbl_s *vtbl)
 static int cmd_help(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
 {
   FAR const char *cmd = NULL;
-#ifdef CONFIG_NSH_HELP_TERSE
+#ifndef CONFIG_NSH_HELP_TERSE
   bool verbose = false;
   int i;
 #endif
 
   /* The command may be followed by a verbose option */
 
-#ifdef CONFIG_NSH_HELP_TERSE
+#ifndef CONFIG_NSH_HELP_TERSE
   i = 1;
   if (argc > i)
     {
@@ -618,14 +619,13 @@ static int cmd_help(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
     {
       /* Yes.. show the single command */
 
-      nsh_output(vtbl, "%s usage:", cmd);
       help_cmd(vtbl, cmd);
     }
   else
     {
        /* In verbose mode, show detailed help for all commands */
 
-#ifdef CONFIG_NSH_HELP_TERSE
+#ifndef CONFIG_NSH_HELP_TERSE
       if (verbose)
         {
           nsh_output(vtbl, "Where <cmd> is one of:\n");
@@ -637,7 +637,6 @@ static int cmd_help(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
       else
 #endif
         {
-          nsh_output(vtbl, "help usage:");
           help_cmd(vtbl, "help");
           nsh_output(vtbl, "\n");
           help_cmdlist(vtbl);
diff --git a/misc/pascal/include/podefs.h b/misc/pascal/include/podefs.h
index 25d0042b61..9d372b4029 100644
--- a/misc/pascal/include/podefs.h
+++ b/misc/pascal/include/podefs.h
@@ -1,204 +1,204 @@
-/***********************************************************************

- * podefs.h

- * Logical P-code operation code definitions

- *

- *   Copyright (C) 2008-2009 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 __PODEFS_H

-#define __PODEFS_H

-

-/* These definitions represent logical operations as needed by the

- * the compiler.  The specific INSN generation layer must interpret

- * these requests as is appropriate to the supported INSNS.

- */

-

-enum pcode_e

-{

-

-  /**-------------------------------------------------------------------

-   * OPCODES WITH NO ARGUMENTS

-   **-------------------------------------------------------------------**/

-

-  /* Program control (No stack arguments) */

-

-  opNOP = 0,

-

-  /* Arithmetic & logical & and integer conversions (One stack argument) */

-

-  opNEG, opABS, opINC, opDEC, opNOT,

-

-  /* Arithmetic & logical (Two stack arguments) */

-

-  opADD, opSUB, opMUL, opDIV, opMOD, opSLL, opSRL, opSRA, opOR, opAND,

-

-  /* Comparisons (One stack argument) */

-

-  opEQUZ, opNEQZ, opLTZ, opGTEZ, opGTZ, opLTEZ,

-

-  /* Comparisons (Two stack arguments) */

-

-  opEQU, opNEQ, opLT, opGTE, opGT, opLTE,

-  opBIT,

-

-  /* Load Immediate */

-

-  opLDI, opLDIB, opLDIM,

-

-  /* Store Immediate */

-

-  opSTI, opSTIB, opSTIM,

-

-  /* Data stack */

-

-  opDUP, opPUSHS, opPOPS,

-

-  /* Program control (No stack arguments)

-   * Behavior:

-   *   Pop return address

-   *   Pop saved base register (BR)

-   *   Discard saved base address

-   *   Set program counter (PC) to return address

-   */

-

-  opRET,

-

-  /* System Functions (No stack arguments) */

-

-  opEND,

-

-  /**-------------------------------------------------------------------

-   ** OPCODES WITH ONE ARGUMENT

-   **-------------------------------------------------------------------**/

-

-  /* Floating point operations: arg = FP op-code */

-

-  opFLOAT,

-

-  /* Program control:  arg = unsigned label (One stack argument) */

-

-  opJEQUZ, opJNEQZ,

-

-  /* Program control:  arg = unsigned label (no stack arguments) */

-

-  opJMP,

-

-  /* Program control:  arg = unsigned label (One stack argument) */

-

-  opJEQU, opJNEQ, opJLT, opJGTE, opJGT, opJLTE,

-

-  /* Load:  arg = unsigned base offset */

-

-  opLD, opLDH, opLDB, opLDM,

-

-  /* Store: arg = unsigned base offset */

-

-  opST, opSTB, opSTM,

-

-  /* Load Indexed: arg = unsigned base offset */

-

-  opLDX, opLDXB, opLDXM,

-

-  /* Store Indexed: arg16 = unsigned base offset */

-

-  opSTX, opSTXB, opSTXM,

-

-  /* Load address relative to stack base: arg = unsigned offset */

-

-  opLA,

-

-  /* Load absolute stack address:  arg = RODATA offset (No stack arguments) */

-

-  opLAC,

-

-  /* Data stack:  arg = 16 bit signed data (no stack arguments) */

-

-  opPUSH, opINDS,

-

-  /* Load address relative to stack base: arg1 = unsigned offset, TOS=index */

-

-  opLAX,

-

-  /* System functions: arg = 16-bit library call identifier */

-

-  opLIB,

-

-  /* Program control:  arg = unsigned label (no stack arguments) */

-

-  opLABEL,

-

-  /**-------------------------------------------------------------------

-   ** OPCODES WITH TWO ARGUMENTS

-   **-------------------------------------------------------------------**/

-

-  /* Program Control:  arg1 = level; arg2 = unsigned label */

-

-  opPCAL,

-

-  /* Load:  arg1 = level; arg2 = signed frame offset */

-

-  opLDS, opLDSH, opLDSB, opLDSM,

-

-  /* Store: arg1 = level; arg2 = signed frame offset */

-

-  opSTS, opSTSB, opSTSM, 

-

-  /* Load Indexed: arg1 = level; arg2 = signed frame offset */

-

-  opLDSX, opLDSXB, opLDSXM,

-

-  /* Store Indexed: arg1 = level; arg2 = signed frame offset */

-

-  opSTSX, opSTSXB, opSTSXM,

-

-  /* FOR LAS/LASX    arg1 = level; arg2 = signed frame offset

-   *                          (no stack arguments)

-   */

-

-  opLAS, opLASX,

-

-  /* System calls:

-   * For SYSIO:        arg1 = file number; arg2 = sub-function code

-   */

-

-  opSYSIO,

-

-  /* Psuedo-operations:

-   * For LINE:         arg1 = file number; arg2 = line number

-   */

-

-  opLINE,

-

-  NUM_OPCODES

-};

-

-#endif /* __PODEFS_H */

+/***********************************************************************
+ * podefs.h
+ * Logical P-code operation code definitions
+ *
+ *   Copyright (C) 2008-2009 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 __PODEFS_H
+#define __PODEFS_H
+
+/* These definitions represent logical operations as needed by the
+ * the compiler.  The specific INSN generation layer must interpret
+ * these requests as is appropriate to the supported INSNS.
+ */
+
+enum pcode_e
+{
+
+  /**-------------------------------------------------------------------
+   * OPCODES WITH NO ARGUMENTS
+   **-------------------------------------------------------------------**/
+
+  /* Program control (No stack arguments) */
+
+  opNOP = 0,
+
+  /* Arithmetic & logical & and integer conversions (One stack argument) */
+
+  opNEG, opABS, opINC, opDEC, opNOT,
+
+  /* Arithmetic & logical (Two stack arguments) */
+
+  opADD, opSUB, opMUL, opDIV, opMOD, opSLL, opSRL, opSRA, opOR, opAND,
+
+  /* Comparisons (One stack argument) */
+
+  opEQUZ, opNEQZ, opLTZ, opGTEZ, opGTZ, opLTEZ,
+
+  /* Comparisons (Two stack arguments) */
+
+  opEQU, opNEQ, opLT, opGTE, opGT, opLTE,
+  opBIT,
+
+  /* Load Immediate */
+
+  opLDI, opLDIB, opLDIM,
+
+  /* Store Immediate */
+
+  opSTI, opSTIB, opSTIM,
+
+  /* Data stack */
+
+  opDUP, opPUSHS, opPOPS,
+
+  /* Program control (No stack arguments)
+   * Behavior:
+   *   Pop return address
+   *   Pop saved base register (BR)
+   *   Discard saved base address
+   *   Set program counter (PC) to return address
+   */
+
+  opRET,
+
+  /* System Functions (No stack arguments) */
+
+  opEND,
+
+  /**-------------------------------------------------------------------
+   ** OPCODES WITH ONE ARGUMENT
+   **-------------------------------------------------------------------**/
+
+  /* Floating point operations: arg = FP op-code */
+
+  opFLOAT,
+
+  /* Program control:  arg = unsigned label (One stack argument) */
+
+  opJEQUZ, opJNEQZ,
+
+  /* Program control:  arg = unsigned label (no stack arguments) */
+
+  opJMP,
+
+  /* Program control:  arg = unsigned label (One stack argument) */
+
+  opJEQU, opJNEQ, opJLT, opJGTE, opJGT, opJLTE,
+
+  /* Load:  arg = unsigned base offset */
+
+  opLD, opLDH, opLDB, opLDM,
+
+  /* Store: arg = unsigned base offset */
+
+  opST, opSTB, opSTM,
+
+  /* Load Indexed: arg = unsigned base offset */
+
+  opLDX, opLDXB, opLDXM,
+
+  /* Store Indexed: arg16 = unsigned base offset */
+
+  opSTX, opSTXB, opSTXM,
+
+  /* Load address relative to stack base: arg = unsigned offset */
+
+  opLA,
+
+  /* Load absolute stack address:  arg = RODATA offset (No stack arguments) */
+
+  opLAC,
+
+  /* Data stack:  arg = 16 bit signed data (no stack arguments) */
+
+  opPUSH, opINDS,
+
+  /* Load address relative to stack base: arg1 = unsigned offset, TOS=index */
+
+  opLAX,
+
+  /* System functions: arg = 16-bit library call identifier */
+
+  opLIB,
+
+  /* Program control:  arg = unsigned label (no stack arguments) */
+
+  opLABEL,
+
+  /**-------------------------------------------------------------------
+   ** OPCODES WITH TWO ARGUMENTS
+   **-------------------------------------------------------------------**/
+
+  /* Program Control:  arg1 = level; arg2 = unsigned label */
+
+  opPCAL,
+
+  /* Load:  arg1 = level; arg2 = signed frame offset */
+
+  opLDS, opLDSH, opLDSB, opLDSM,
+
+  /* Store: arg1 = level; arg2 = signed frame offset */
+
+  opSTS, opSTSB, opSTSM, 
+
+  /* Load Indexed: arg1 = level; arg2 = signed frame offset */
+
+  opLDSX, opLDSXB, opLDSXM,
+
+  /* Store Indexed: arg1 = level; arg2 = signed frame offset */
+
+  opSTSX, opSTSXB, opSTSXM,
+
+  /* FOR LAS/LASX    arg1 = level; arg2 = signed frame offset
+   *                          (no stack arguments)
+   */
+
+  opLAS, opLASX,
+
+  /* System calls:
+   * For SYSIO:        arg1 = file number; arg2 = sub-function code
+   */
+
+  opSYSIO,
+
+  /* Pseudo-operations:
+   * For LINE:         arg1 = file number; arg2 = line number
+   */
+
+  opLINE,
+
+  NUM_OPCODES
+};
+
+#endif /* __PODEFS_H */
diff --git a/misc/pascal/insn16/include/pinsn16.h b/misc/pascal/insn16/include/pinsn16.h
index a966f7aa36..92f3354004 100644
--- a/misc/pascal/insn16/include/pinsn16.h
+++ b/misc/pascal/insn16/include/pinsn16.h
@@ -1,408 +1,408 @@
-/****************************************************************************

- * pinsn16.h

- * 16-bit P-code operation code definitions

- *

- *   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 __PINSN16_H

-#define __PINSN16_H

-

-/****************************************************************************

- * Included Files

- ****************************************************************************/

-

-/****************************************************************************

- * Definitions

- ****************************************************************************/

-

-/* Op-code bit definitions */

-

-#define o16    (0x80)

-#define o8     (0x40)

-

-/* Opcode Encoding Summary:

- *

- *            NO ARGS    arg8 ONLY      arg16 ONLY     BOTH

- *            00xx xxxx  01xx xxxx      10xx xxxx      11xx xxxx

- * xx00 0000  NOP        ---            ---            ---

- * xx00 0001  NEG        ---            ---            ---

- * xx00 0010  ABS        ---            ---            ---

- * xx00 0011  INC        ---            ---            ---

- * xx00 0100  DEC        ---            ---            ---

- * xx00 0101  NOT        ---            ---            ---

- * xx00 0110  ADD        ---            ---            ---

- * xx00 0111  SUB        ---            ---            ---

- * xx00 1000  MUL        ---            ---            PCAL l,ilbl

- * xx00 1001  DIV        ---            ---            ---

- * xx00 1010  MOD        ---            ---            ---

- * xx00 1011  SLL        ---            ---            ---

- * xx00 1100  SRL        ---            ---            ---

- * xx00 1101  SRA        ---            ---            ---

- * xx00 1110  OR         ---            ---            ---

- * xx00 1111  AND        ---            ---            ---

- *

- * xx01 0000  EQUZ       ---            JEQUZ ilbl     ---

- * xx01 0001  NEQZ       ---            JNEQZ ilbl     ---

- * xx01 0010  LTZ        ---            JLTZ  ilbl     ---

- * xx01 0011  GTEZ       ---            JGTEZ ilbl     ---

- * xx01 0100  GTZ        ---            JGTZ  ilbl     ---

- * xx01 0101  LTEZ       ---            JLTEZ ilbl     ---

- * xx01 0110  ---        ---            JMP   ilbl     ---

- * xx01 0111  ---        ---            ---            ---

- * xx01 1000  EQU        ---            JEQU  ilbl     ---

- * xx01 1001  NEQ        ---            JNEQ  ilbl     ---

- * xx01 1010  LT         ---            JLT   ilbl     ---

- * xx01 1011  GTE        ---            JGTE  ilbl     ---

- * xx01 1100  GT         ---            JGT   ilbl     ---

- * xx01 1101  LTE        ---            JLTE  ilbl     ---

- * xx01 1110  ---        ---            ---            ---

- * xx01 1111  BIT        ---            ---            ---

- *

- * xx10 0000  LDI        ---            LD uoffs       LDS lvl,offs

- * xx10 0001  LDIH       ---            LDH uoffs      LDSH lvl,offs

- * xx10 0010  LDIB       ---            LDB uoffs      LDSB lvl,offs

- * xx10 0011  LDIM       ---            LDM uoffs      LDSM lvl,offs

- * xx10 0100  STI        ---            ST uoffs       STS lvl,offs

- * xx10 0101  STIH       ---            STH uoffs      STSH lvl,offs

- * xx10 0110  STIB       ---            STB uoffs      STSB lvl,offs

- * xx10 0111  STIM       ---            STM uoffs      STSM lvl,offs

- * xx10 1000  DUP        ---            LDX uoffs      LDSX lvl,offs

- * xx10 1001  DUPH       ---            LDXH uoffs     LDSXH lvl,offs

- * xx10 1010  PUSHS      ---            LDXB uoffs     LDSXB lvl,offs

- * xx10 1011  POPS       ---            LDXM uoffs     LDSXM lvl,offs

- * xx10 1100  ---        ---            STX uoffs      STSX lvl,offs

- * xx10 1101  ---        ---            STXH uoffs     STSXH lvl,offs

- * xx10 1110  ---        ---            STXB uoffs     STSXB lvl,offs

- * xx10 1111  RET        ---            STXM uoffs     STSXM lvl,offs

- *

- * xx11 0000  ---        FLOAT fop      LA uoffs       LAS lvl,offs

- * xx11 0001  ---        ---            LAC dlbl       ---

- * xx11 0010  ---        ---            ---            ---

- * xx11 0011  ---        ---            ---            ---

- * xx11 0100  ---        PUSHB n        PUSH nn        ---

- * xx11 0101  ---        ---            INDS nn        ---

- * xx11 0110  ---        ---            ---            ---

- * xx11 0111  ---        ---            ---            ---

- * xx11 1000  ---        ---            LAX uoffs      LASX lvl,offs

- * xx11 1001  ---        ---            LIB lop        SYSIO fn,sop

- * xx11 1010  ---        ---            ---            ---

- * xx11 1011  ---        ---            ---            ---

- * xx11 1100  ---        ---            ---            ---

- * xx11 1101  ---        ---            ---            ---

- * xx11 1110  ---        ---            ---            ---

- * xx11 1111  END        ---           *LABEL ilbl    *LINE fn,lineno 

- *

- * KEY:

- *   n     = 8-bit value (unsigned)

- *   lvl   = 8-bit static nesting level offset (unsigned)

- *   vt    = 8-bit type code (unsigned)

- *   nn    = 16-bit value (signed)

- *   fop   = 8-bit floating point operation

- *   sop   = 16-bit sysio operation

- *   lop   = 16-bit library call identifier

- *   fn    = 8-bit file number

- *   ilbl  = instruction space label

- *   dlbl  = stack data label

- *   offs  = 16-bit frame offset (signed)

- *   uoffs = 16-bit base offset (unsigned)

- *   c     = string follows psuedo-operation

- *   *     = Indicates pseudo-operations (these are removed

- *           after final fixup of the object file).

- */

-

-/** OPCODES WITH NO ARGUMENTS ***********************************************/

-

-/* Program control (No stack arguments) */

-

-#define oNOP   (0x00)

-

-/* Arithmetic & logical & and integer conversions (One 16-bit stack argument) */

-

-#define oNEG   (0x01)

-#define oABS   (0x02)

-#define oINC   (0x03)

-#define oDEC   (0x04)

-#define oNOT   (0x05)

-

-/* Arithmetic & logical (Two 16-bit stack arguments) */

-

-#define oADD   (0x06)

-#define oSUB   (0x07)

-#define oMUL   (0x08)

-#define oDIV   (0x09)

-#define oMOD   (0x0a)

-#define oSLL   (0x0b)

-#define oSRL   (0x0c)

-#define oSRA   (0x0d)

-#define oOR    (0x0e)

-#define oAND   (0x0f)

-

-/* Comparisons (One 16-bit stack argument) */

-

-#define oEQUZ  (0x10)

-#define oNEQZ  (0x11)

-#define oLTZ   (0x12)

-#define oGTEZ  (0x13)

-#define oGTZ   (0x14)

-#define oLTEZ  (0x15)

-

-/* 0x16-0x17 -- unassigned */

-

-/* Comparisons (Two 16-bit stack arguments) */

-

-#define oEQU   (0x18)

-#define oNEQ   (0x19)

-#define oLT    (0x1a)

-#define oGTE   (0x1b)

-#define oGT    (0x1c)

-#define oLTE   (0x1d)

-

-/* 0x1e -- unassigned */

-

-#define oBIT   (0x1f)

-

-/* Load Immediate */

-

-#define oLDI   (0x20)	/* (One 16-bit stack argument) */

-#define oLDIH  (0x21)	/* (One 16-bit stack argument) */

-#define oLDIB  (0x22)   /* (One 16-bit stack argument) */

-#define oLDIM  (0x23)	/* (Two 16-bit stack arguments) */

-

-/* Store Immediate */

-

-#define oSTI   (0x24)	/* (One 32-bit and one 16-bit stack arguments) */

-#define oSTIH  (0x25)	/* (Two 16-bit stack arguments) */

-#define oSTIB  (0x26)   /* (Two 16-bit stack arguments) */

-#define oSTIM  (0x27)	/* (Two + n 16-bit stack arguments) */

-

-/* Data stack */

-

-#define oDUP   (0x28)   /* (One 32-bit stack argument */

-#define oDUPH  (0x29)   /* (One 16-bit stack argument) */

-

-/* 0x2a - 0x2b -- unassigned */

-

-#define oPUSHS (0x2a)   /* No arguments */

-#define oPOPS  (0x2b)   /* (One 16-bit stack argument) */

-

-/* 0x2c - 0x2e -- unassigned */

-

-/* Program control (No stack arguments)

- * Behavior:

- *   Pop return address

- *   Pop saved base register (BR)

- *   Discard saved base address

- *   Set program counter (PC) to return address

- */

-

-#define oRET   (0x2f)

-

-/* 0x30 - 0x3e -- unassigned */

-

-/* System Functions (No stack arguments) */

-

-#define oEND   (0x3f)

-

-/** OPCODES WITH SINGLE BYTE ARGUMENT (arg8) ********************************/

-

-/* (o8|0x00)-(o8|0x2f) -- unassigned */

-

-/* Floating point operations: arg8 = FP op-code */

-

-#define oFLOAT  (o8|0x30)

-

-/* (o8|0x31)-(o8|0x33) -- unassigned */

-

-/* Data stack:  arg8 = 8 bit unsigned data (no stack arguments) */

-

-#define oPUSHB  (o8|0x34)

-

-/* (o8|0x35)-(o8|0x3f) -- unassigned */

-

-/** OPCODES WITH SINGLE 16-BIT ARGUMENT (arg16) *****************************/

-

-/* (o16|0x00)-(o16|0x0f) -- unassigned */

-

-/* Program control:  arg16 = unsigned label (One 16-bit stack argument) */

-

-#define oJEQUZ (o16|0x10)

-#define oJNEQZ (o16|0x11)

-#define oJLTZ  (o16|0x12)

-#define oJGTEZ (o16|0x13)

-#define oJGTZ  (o16|0x14)

-#define oJLTEZ (o16|0x15)

-

-/* Program control:  arg16 = unsigned label (no stack arguments) */

-

-#define oJMP   (o16|0x16)

-

-/* (o16|0x17) -- unassigned */

-

-/* Program control:  arg16 = unsigned label (One 16-bit stack argument) */

-

-#define oJEQU  (o16|0x18)

-#define oJNEQ  (o16|0x19)

-#define oJLT   (o16|0x1a)

-#define oJGTE  (o16|0x1b)

-#define oJGT   (o16|0x1c)

-#define oJLTE  (o16|0x1d)

-

-/* (o16|0x1e)-(o16|0x1f) -- unassigned */

-

-/* Load:  arg16 = unsigned base offset */

-

-#define oLD    (o16|0x20)       /* (no stack arguments) */

-#define oLDH   (o16|0x21)       /* (no stack arguments) */

-#define oLDB   (o16|0x22)       /* (no stack arguments) */

-#define oLDM   (o16|0x23)       /* (One 16-bit stack argument) */

-

-/* Store: arg16 = unsigned base offset */

-

-#define oST    (o16|0x24)       /* (One 32-bit stack argument) */

-#define oSTH   (o16|0x25)       /* (One 16-bit stack argument) */

-#define oSTB   (o16|0x26)       /* (One 16-bit stack argument) */

-#define oSTM   (o16|0x27)       /* (One+n 16-bit stack arguments) */

-

-/* Load Indexed: arg16 = unsigned base offset */

-

-#define oLDX   (o16|0x28)       /* (One 16-bit stack argument) */

-#define oLDXH  (o16|0x29)       /* (One 16-bit stack argument) */

-#define oLDXB  (o16|0x2a)       /* (One 16-bit stack argument) */

-#define oLDXM  (o16|0x2b)       /* (Two 16-bit stack arguments) */

-

-/* Store Indexed: arg16 = unsigned base offset */

-

-#define oSTX   (o16|0x2c)       /* (One 32-bit + one 16-bit stack arguments) */

-#define oSTXH  (o16|0x2d)       /* (Two 16-bit stack arguments) */

-#define oSTXB  (o16|0x2e)       /* (Two 16-bit stack arguments) */

-#define oSTXM  (o16|0x2f)       /* (Two+n 16-bit stack arguments) */

-

-/* Load address relative to stack base: arg16 = unsigned offset */

-

-#define oLA    (o16|0x30)

-

-/* Load absolute stack address:  arg16 = RODATA offset (No stack arguments) */

-

-#define oLAC   (o16|0x31)

-

-/* (o16|0x32)-(o16|0x33) -- unassigned */

-

-/* Data stack:  arg16 = 16 bit signed data (no stack arguments) */

-

-#define oPUSH  (o16|0x34)

-#define oINDS  (o16|0x35)

-

-/* (o16|0x34)-(o16|0x37) -- unassigned */

-

-/* Load address relative to stack base: arg16 = unsigned offset, TOS=index */

-

-#define oLAX   (o16|0x38)

-

-/* System functions: arg16 = 16-bit library call identifier */

-

-#define oLIB   (o16|0x39)

-

-/* (o16|0x3a)-(o16|0x3e) -- unassigned */

-

-/* Program control:  arg16 = unsigned label (no stack arguments) */

-

-#define oLABEL (o16|0x3f)

-

-/** OPCODES WITH 24-BITS OF ARGUMENET (arg8 + arg16) ************************/

-

-/* (o16|o8|0x00)-(o8|o16|0x07) -- unassigned */

-

-/* Program Control:  arg8 = level; arg16 = unsigned label

- *                  (No stack arguments)

- * Behavior:

- *   Push base address of level

- *   Push base register (BR) value

- *   Set new base register value (BR) as top of stack

- *   Push return address

- *   Set program counter (PC) for address associated with label

- */

-

-#define oPCAL  (o16|o8|0x08)

-

-/* (o16|o8|0x09)-(o8|o16|0x1f) -- unassigned */

-

-/* Load:  arg8 = level; arg16 = signed frame offset */

-

-#define oLDS   (o16|o8|0x20)	/* (no stack arguments) */

-#define oLDSH  (o16|o8|0x21)	/* (no stack arguments) */

-#define oLDSB  (o16|o8|0x22)    /* (no stack arguments) */

-#define oLDSM  (o16|o8|0x23)	/* (One 16-bit stack argument) */

-

-/* Store: arg8 = level; arg16 = signed frame offset */

-

-#define oSTS   (o16|o8|0x24)	/* (One 32-bit stack argument) */

-#define oSTSH  (o16|o8|0x25)	/* (One 16-bit stack argument) */

-#define oSTSB  (o16|o8|0x26)    /* (One 16-bit stack argument) */

-#define oSTSM  (o16|o8|0x27)	/* (One+n 16-bit stack arguments) */

-

-/* Load Indexed: arg8 = level; arg16 = signed frame offset */

-

-#define oLDSX  (o16|o8|0x28)	/* (One 16-bit stack argument) */

-#define oLDSXH (o16|o8|0x29)	/* (One 16-bit stack argument) */

-#define oLDSXB (o16|o8|0x2a)    /* (One 16-bit stack argument) */

-#define oLDSXM (o16|o8|0x2b)    /* (Two 16-bit stack arguments) */

-

-/* Store Indexed: arg8 = level; arg16 = signed frame offset */

-

-#define oSTSX  (o16|o8|0x2c)    /* (One 32-bit + one 16-bit stack arguments) */

-#define oSTSXH (o16|o8|0x2d)    /* (Two 16-bit stack arguments) */

-#define oSTSXB (o16|o8|0x2e)    /* (Two 16-bit stack arguments) */

-#define oSTSXM (o16|o8|0x2f)    /* (Two+n 16-bit stack arguments) */

-

-/* FOR LAS/LASX    arg8 = level; arg16 = signed frame offset

- *                          (no stack arguments)

- */

-

-#define oLAS   (o16|o8|0x30)

-#define oLASX  (o16|o8|0x38)

-

-/* System calls:

- * For SYSIO:        arg8 = file number; arg16 = sub-function code

- */

-

-#define oSYSIO  (o16|o8|0x39)

-

-/* (o16|o8|0x3a)-(o8|o16|0x3e) -- unassigned */

-

-/* Psuedo-operations:

- * For LINE:         arg8 = file number; arg16 = line number

- */

-

-#define oLINE    (o16|o8|0x3f)

-

-#endif /* __PINSN16_H */

+/****************************************************************************
+ * pinsn16.h
+ * 16-bit P-code operation code definitions
+ *
+ *   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 __PINSN16_H
+#define __PINSN16_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Op-code bit definitions */
+
+#define o16    (0x80)
+#define o8     (0x40)
+
+/* Opcode Encoding Summary:
+ *
+ *            NO ARGS    arg8 ONLY      arg16 ONLY     BOTH
+ *            00xx xxxx  01xx xxxx      10xx xxxx      11xx xxxx
+ * xx00 0000  NOP        ---            ---            ---
+ * xx00 0001  NEG        ---            ---            ---
+ * xx00 0010  ABS        ---            ---            ---
+ * xx00 0011  INC        ---            ---            ---
+ * xx00 0100  DEC        ---            ---            ---
+ * xx00 0101  NOT        ---            ---            ---
+ * xx00 0110  ADD        ---            ---            ---
+ * xx00 0111  SUB        ---            ---            ---
+ * xx00 1000  MUL        ---            ---            PCAL l,ilbl
+ * xx00 1001  DIV        ---            ---            ---
+ * xx00 1010  MOD        ---            ---            ---
+ * xx00 1011  SLL        ---            ---            ---
+ * xx00 1100  SRL        ---            ---            ---
+ * xx00 1101  SRA        ---            ---            ---
+ * xx00 1110  OR         ---            ---            ---
+ * xx00 1111  AND        ---            ---            ---
+ *
+ * xx01 0000  EQUZ       ---            JEQUZ ilbl     ---
+ * xx01 0001  NEQZ       ---            JNEQZ ilbl     ---
+ * xx01 0010  LTZ        ---            JLTZ  ilbl     ---
+ * xx01 0011  GTEZ       ---            JGTEZ ilbl     ---
+ * xx01 0100  GTZ        ---            JGTZ  ilbl     ---
+ * xx01 0101  LTEZ       ---            JLTEZ ilbl     ---
+ * xx01 0110  ---        ---            JMP   ilbl     ---
+ * xx01 0111  ---        ---            ---            ---
+ * xx01 1000  EQU        ---            JEQU  ilbl     ---
+ * xx01 1001  NEQ        ---            JNEQ  ilbl     ---
+ * xx01 1010  LT         ---            JLT   ilbl     ---
+ * xx01 1011  GTE        ---            JGTE  ilbl     ---
+ * xx01 1100  GT         ---            JGT   ilbl     ---
+ * xx01 1101  LTE        ---            JLTE  ilbl     ---
+ * xx01 1110  ---        ---            ---            ---
+ * xx01 1111  BIT        ---            ---            ---
+ *
+ * xx10 0000  LDI        ---            LD uoffs       LDS lvl,offs
+ * xx10 0001  LDIH       ---            LDH uoffs      LDSH lvl,offs
+ * xx10 0010  LDIB       ---            LDB uoffs      LDSB lvl,offs
+ * xx10 0011  LDIM       ---            LDM uoffs      LDSM lvl,offs
+ * xx10 0100  STI        ---            ST uoffs       STS lvl,offs
+ * xx10 0101  STIH       ---            STH uoffs      STSH lvl,offs
+ * xx10 0110  STIB       ---            STB uoffs      STSB lvl,offs
+ * xx10 0111  STIM       ---            STM uoffs      STSM lvl,offs
+ * xx10 1000  DUP        ---            LDX uoffs      LDSX lvl,offs
+ * xx10 1001  DUPH       ---            LDXH uoffs     LDSXH lvl,offs
+ * xx10 1010  PUSHS      ---            LDXB uoffs     LDSXB lvl,offs
+ * xx10 1011  POPS       ---            LDXM uoffs     LDSXM lvl,offs
+ * xx10 1100  ---        ---            STX uoffs      STSX lvl,offs
+ * xx10 1101  ---        ---            STXH uoffs     STSXH lvl,offs
+ * xx10 1110  ---        ---            STXB uoffs     STSXB lvl,offs
+ * xx10 1111  RET        ---            STXM uoffs     STSXM lvl,offs
+ *
+ * xx11 0000  ---        FLOAT fop      LA uoffs       LAS lvl,offs
+ * xx11 0001  ---        ---            LAC dlbl       ---
+ * xx11 0010  ---        ---            ---            ---
+ * xx11 0011  ---        ---            ---            ---
+ * xx11 0100  ---        PUSHB n        PUSH nn        ---
+ * xx11 0101  ---        ---            INDS nn        ---
+ * xx11 0110  ---        ---            ---            ---
+ * xx11 0111  ---        ---            ---            ---
+ * xx11 1000  ---        ---            LAX uoffs      LASX lvl,offs
+ * xx11 1001  ---        ---            LIB lop        SYSIO fn,sop
+ * xx11 1010  ---        ---            ---            ---
+ * xx11 1011  ---        ---            ---            ---
+ * xx11 1100  ---        ---            ---            ---
+ * xx11 1101  ---        ---            ---            ---
+ * xx11 1110  ---        ---            ---            ---
+ * xx11 1111  END        ---           *LABEL ilbl    *LINE fn,lineno 
+ *
+ * KEY:
+ *   n     = 8-bit value (unsigned)
+ *   lvl   = 8-bit static nesting level offset (unsigned)
+ *   vt    = 8-bit type code (unsigned)
+ *   nn    = 16-bit value (signed)
+ *   fop   = 8-bit floating point operation
+ *   sop   = 16-bit sysio operation
+ *   lop   = 16-bit library call identifier
+ *   fn    = 8-bit file number
+ *   ilbl  = instruction space label
+ *   dlbl  = stack data label
+ *   offs  = 16-bit frame offset (signed)
+ *   uoffs = 16-bit base offset (unsigned)
+ *   c     = string follows pseudo-operation
+ *   *     = Indicates pseudo-operations (these are removed
+ *           after final fixup of the object file).
+ */
+
+/** OPCODES WITH NO ARGUMENTS ***********************************************/
+
+/* Program control (No stack arguments) */
+
+#define oNOP   (0x00)
+
+/* Arithmetic & logical & and integer conversions (One 16-bit stack argument) */
+
+#define oNEG   (0x01)
+#define oABS   (0x02)
+#define oINC   (0x03)
+#define oDEC   (0x04)
+#define oNOT   (0x05)
+
+/* Arithmetic & logical (Two 16-bit stack arguments) */
+
+#define oADD   (0x06)
+#define oSUB   (0x07)
+#define oMUL   (0x08)
+#define oDIV   (0x09)
+#define oMOD   (0x0a)
+#define oSLL   (0x0b)
+#define oSRL   (0x0c)
+#define oSRA   (0x0d)
+#define oOR    (0x0e)
+#define oAND   (0x0f)
+
+/* Comparisons (One 16-bit stack argument) */
+
+#define oEQUZ  (0x10)
+#define oNEQZ  (0x11)
+#define oLTZ   (0x12)
+#define oGTEZ  (0x13)
+#define oGTZ   (0x14)
+#define oLTEZ  (0x15)
+
+/* 0x16-0x17 -- unassigned */
+
+/* Comparisons (Two 16-bit stack arguments) */
+
+#define oEQU   (0x18)
+#define oNEQ   (0x19)
+#define oLT    (0x1a)
+#define oGTE   (0x1b)
+#define oGT    (0x1c)
+#define oLTE   (0x1d)
+
+/* 0x1e -- unassigned */
+
+#define oBIT   (0x1f)
+
+/* Load Immediate */
+
+#define oLDI   (0x20)	/* (One 16-bit stack argument) */
+#define oLDIH  (0x21)	/* (One 16-bit stack argument) */
+#define oLDIB  (0x22)   /* (One 16-bit stack argument) */
+#define oLDIM  (0x23)	/* (Two 16-bit stack arguments) */
+
+/* Store Immediate */
+
+#define oSTI   (0x24)	/* (One 32-bit and one 16-bit stack arguments) */
+#define oSTIH  (0x25)	/* (Two 16-bit stack arguments) */
+#define oSTIB  (0x26)   /* (Two 16-bit stack arguments) */
+#define oSTIM  (0x27)	/* (Two + n 16-bit stack arguments) */
+
+/* Data stack */
+
+#define oDUP   (0x28)   /* (One 32-bit stack argument */
+#define oDUPH  (0x29)   /* (One 16-bit stack argument) */
+
+/* 0x2a - 0x2b -- unassigned */
+
+#define oPUSHS (0x2a)   /* No arguments */
+#define oPOPS  (0x2b)   /* (One 16-bit stack argument) */
+
+/* 0x2c - 0x2e -- unassigned */
+
+/* Program control (No stack arguments)
+ * Behavior:
+ *   Pop return address
+ *   Pop saved base register (BR)
+ *   Discard saved base address
+ *   Set program counter (PC) to return address
+ */
+
+#define oRET   (0x2f)
+
+/* 0x30 - 0x3e -- unassigned */
+
+/* System Functions (No stack arguments) */
+
+#define oEND   (0x3f)
+
+/** OPCODES WITH SINGLE BYTE ARGUMENT (arg8) ********************************/
+
+/* (o8|0x00)-(o8|0x2f) -- unassigned */
+
+/* Floating point operations: arg8 = FP op-code */
+
+#define oFLOAT  (o8|0x30)
+
+/* (o8|0x31)-(o8|0x33) -- unassigned */
+
+/* Data stack:  arg8 = 8 bit unsigned data (no stack arguments) */
+
+#define oPUSHB  (o8|0x34)
+
+/* (o8|0x35)-(o8|0x3f) -- unassigned */
+
+/** OPCODES WITH SINGLE 16-BIT ARGUMENT (arg16) *****************************/
+
+/* (o16|0x00)-(o16|0x0f) -- unassigned */
+
+/* Program control:  arg16 = unsigned label (One 16-bit stack argument) */
+
+#define oJEQUZ (o16|0x10)
+#define oJNEQZ (o16|0x11)
+#define oJLTZ  (o16|0x12)
+#define oJGTEZ (o16|0x13)
+#define oJGTZ  (o16|0x14)
+#define oJLTEZ (o16|0x15)
+
+/* Program control:  arg16 = unsigned label (no stack arguments) */
+
+#define oJMP   (o16|0x16)
+
+/* (o16|0x17) -- unassigned */
+
+/* Program control:  arg16 = unsigned label (One 16-bit stack argument) */
+
+#define oJEQU  (o16|0x18)
+#define oJNEQ  (o16|0x19)
+#define oJLT   (o16|0x1a)
+#define oJGTE  (o16|0x1b)
+#define oJGT   (o16|0x1c)
+#define oJLTE  (o16|0x1d)
+
+/* (o16|0x1e)-(o16|0x1f) -- unassigned */
+
+/* Load:  arg16 = unsigned base offset */
+
+#define oLD    (o16|0x20)       /* (no stack arguments) */
+#define oLDH   (o16|0x21)       /* (no stack arguments) */
+#define oLDB   (o16|0x22)       /* (no stack arguments) */
+#define oLDM   (o16|0x23)       /* (One 16-bit stack argument) */
+
+/* Store: arg16 = unsigned base offset */
+
+#define oST    (o16|0x24)       /* (One 32-bit stack argument) */
+#define oSTH   (o16|0x25)       /* (One 16-bit stack argument) */
+#define oSTB   (o16|0x26)       /* (One 16-bit stack argument) */
+#define oSTM   (o16|0x27)       /* (One+n 16-bit stack arguments) */
+
+/* Load Indexed: arg16 = unsigned base offset */
+
+#define oLDX   (o16|0x28)       /* (One 16-bit stack argument) */
+#define oLDXH  (o16|0x29)       /* (One 16-bit stack argument) */
+#define oLDXB  (o16|0x2a)       /* (One 16-bit stack argument) */
+#define oLDXM  (o16|0x2b)       /* (Two 16-bit stack arguments) */
+
+/* Store Indexed: arg16 = unsigned base offset */
+
+#define oSTX   (o16|0x2c)       /* (One 32-bit + one 16-bit stack arguments) */
+#define oSTXH  (o16|0x2d)       /* (Two 16-bit stack arguments) */
+#define oSTXB  (o16|0x2e)       /* (Two 16-bit stack arguments) */
+#define oSTXM  (o16|0x2f)       /* (Two+n 16-bit stack arguments) */
+
+/* Load address relative to stack base: arg16 = unsigned offset */
+
+#define oLA    (o16|0x30)
+
+/* Load absolute stack address:  arg16 = RODATA offset (No stack arguments) */
+
+#define oLAC   (o16|0x31)
+
+/* (o16|0x32)-(o16|0x33) -- unassigned */
+
+/* Data stack:  arg16 = 16 bit signed data (no stack arguments) */
+
+#define oPUSH  (o16|0x34)
+#define oINDS  (o16|0x35)
+
+/* (o16|0x34)-(o16|0x37) -- unassigned */
+
+/* Load address relative to stack base: arg16 = unsigned offset, TOS=index */
+
+#define oLAX   (o16|0x38)
+
+/* System functions: arg16 = 16-bit library call identifier */
+
+#define oLIB   (o16|0x39)
+
+/* (o16|0x3a)-(o16|0x3e) -- unassigned */
+
+/* Program control:  arg16 = unsigned label (no stack arguments) */
+
+#define oLABEL (o16|0x3f)
+
+/** OPCODES WITH 24-BITS OF ARGUMENET (arg8 + arg16) ************************/
+
+/* (o16|o8|0x00)-(o8|o16|0x07) -- unassigned */
+
+/* Program Control:  arg8 = level; arg16 = unsigned label
+ *                  (No stack arguments)
+ * Behavior:
+ *   Push base address of level
+ *   Push base register (BR) value
+ *   Set new base register value (BR) as top of stack
+ *   Push return address
+ *   Set program counter (PC) for address associated with label
+ */
+
+#define oPCAL  (o16|o8|0x08)
+
+/* (o16|o8|0x09)-(o8|o16|0x1f) -- unassigned */
+
+/* Load:  arg8 = level; arg16 = signed frame offset */
+
+#define oLDS   (o16|o8|0x20)	/* (no stack arguments) */
+#define oLDSH  (o16|o8|0x21)	/* (no stack arguments) */
+#define oLDSB  (o16|o8|0x22)    /* (no stack arguments) */
+#define oLDSM  (o16|o8|0x23)	/* (One 16-bit stack argument) */
+
+/* Store: arg8 = level; arg16 = signed frame offset */
+
+#define oSTS   (o16|o8|0x24)	/* (One 32-bit stack argument) */
+#define oSTSH  (o16|o8|0x25)	/* (One 16-bit stack argument) */
+#define oSTSB  (o16|o8|0x26)    /* (One 16-bit stack argument) */
+#define oSTSM  (o16|o8|0x27)	/* (One+n 16-bit stack arguments) */
+
+/* Load Indexed: arg8 = level; arg16 = signed frame offset */
+
+#define oLDSX  (o16|o8|0x28)	/* (One 16-bit stack argument) */
+#define oLDSXH (o16|o8|0x29)	/* (One 16-bit stack argument) */
+#define oLDSXB (o16|o8|0x2a)    /* (One 16-bit stack argument) */
+#define oLDSXM (o16|o8|0x2b)    /* (Two 16-bit stack arguments) */
+
+/* Store Indexed: arg8 = level; arg16 = signed frame offset */
+
+#define oSTSX  (o16|o8|0x2c)    /* (One 32-bit + one 16-bit stack arguments) */
+#define oSTSXH (o16|o8|0x2d)    /* (Two 16-bit stack arguments) */
+#define oSTSXB (o16|o8|0x2e)    /* (Two 16-bit stack arguments) */
+#define oSTSXM (o16|o8|0x2f)    /* (Two+n 16-bit stack arguments) */
+
+/* FOR LAS/LASX    arg8 = level; arg16 = signed frame offset
+ *                          (no stack arguments)
+ */
+
+#define oLAS   (o16|o8|0x30)
+#define oLASX  (o16|o8|0x38)
+
+/* System calls:
+ * For SYSIO:        arg8 = file number; arg16 = sub-function code
+ */
+
+#define oSYSIO  (o16|o8|0x39)
+
+/* (o16|o8|0x3a)-(o8|o16|0x3e) -- unassigned */
+
+/* Pseudo-operations:
+ * For LINE:         arg8 = file number; arg16 = line number
+ */
+
+#define oLINE    (o16|o8|0x3f)
+
+#endif /* __PINSN16_H */
diff --git a/misc/pascal/insn16/libinsn/pdasm.c b/misc/pascal/insn16/libinsn/pdasm.c
index b6c1ecb318..4da71869ac 100644
--- a/misc/pascal/insn16/libinsn/pdasm.c
+++ b/misc/pascal/insn16/libinsn/pdasm.c
@@ -431,7 +431,7 @@ static const struct
 /* 0xfd */ { invOp,   NOARG16 },
 /* 0xfe */ { invOp,   NOARG16 },
 
-/* Psuedo-operations:
+/* Pseudo-operations:
  * For LINE:         arg8 = file number; arg16 = line number
  */
 
diff --git a/misc/pascal/insn16/prun/pexec.c b/misc/pascal/insn16/prun/pexec.c
index af68c49fb1..46df53c2c3 100644
--- a/misc/pascal/insn16/prun/pexec.c
+++ b/misc/pascal/insn16/prun/pexec.c
@@ -2185,7 +2185,7 @@ static int pexec32(FAR struct pexec_s *st, uint8_t opcode, uint8_t imm8, uint16_
       ret = pexec_sysio(st, imm8, imm16);
       break;
 
-      /* Psuedo-operations:  (No stack arguments)
+      /* Pseudo-operations:  (No stack arguments)
        * For LINE:    imm8 = file number; imm16 = line number
        */
 
diff --git a/misc/pascal/insn32/doc/insn32.txt b/misc/pascal/insn32/doc/insn32.txt
index ff1416ca58..3bb7bc700b 100644
--- a/misc/pascal/insn32/doc/insn32.txt
+++ b/misc/pascal/insn32/doc/insn32.txt
@@ -1,119 +1,119 @@
-32-bit op-code bit definitions

-

-Machine model:

-

-  SPB 32-bit Pascal stack base address

-  SP  32-bit Pascal stack pointer

-  LSP 32-bit Level stack pointer

-  CSB 32-bit Character stack base address

-  CSP 32-bit Character stack pointer

-  DS  32-bit Data size register (for multiple reg transfers)

-  PC  32-bit Program Counter

-  CC  Condition code register

-  --- Volatile general purpose registers

-  --- Static general purpose registers

-

-Condition codes:  Z(ero), N(egative)

-

-       +=====+=====+

-       |  Z  |  N  |

-  +=====+=====+=====+

-  | EQ  |  1  |  -  |

-  | NEQ |  0  |  -  |

-  | LT  |  -  |  1  |

-  | GTE |  -  |  0  |

-  | GT  |  0  |  0  |

-  | LTE |  1  |  1  |

-  +=====+=====+=====+

-

-Opcode Encoding Summary:

-

-           0rxx xxxx  1rxxx xxxx

-xr00 0000  NOP        LD   uoffs4

-xr00 0001  NEG        LDH  uoffs3

-xr00 0010  ABS        LDB  uoffs

-xr00 0011  INC        LDM  uoffs4

-xr00 0100  DEC        ST   uoffs4

-xr00 0101  NOT        STH  uoffs2

-xr00 0110  ADD        STB  uoffs

-xr00 0111  SUB        STM  uoffs4

-xr00 1000  MUL        LDX  uoffs4

-xr00 1001  DIV        LDXH uoffs2

-xr00 1010  MOD        LDXB uoffs

-xr00 1011  SLL        LDXM uoffs4

-xr00 1100  SRL        STX  uoffs4

-xr00 1101  SRA        STXH uoffs2

-xr00 1110  OR         STXB uoffs

-xr00 1111  AND        STXM uoffs

-

-xr01 0000  EQUZ       JEQUZ ilbl

-xr01 0001  NEQZ       JNEQZ ilbl

-xr01 0010  LTZ        JLTZ  ilbl

-xr01 0011  GTEZ       JGTEZ ilbl

-xr01 0100  GTZ        JGTZ  ilbl

-xr01 0101  LTEZ       JLTEZ ilbl

-xr01 0110  ---        JMP   ilbl

-xr01 0111  ---        PUSH  nn

-xr01 1000  EQU        JEQU  ilbl

-xr01 1001  NEQ        JNEQ  ilbl

-xr01 1010  LT         JLT   ilbl

-xr01 1011  GTE        JGTE  ilbl    

-xr01 1100  GT         JGT   ilbl

-xr01 1101  LTE        JLTE  ilbl

-xr01 1110  ---        ---

-xr01 1111  BIT        INDS  nn

-

-xr10 0000  LDI        LDS   offs4

-xr10 0001  LDIH       LDSH  offs3

-xr10 0010  LDIB       LDSB  offs

-xr10 0011  LDIM       LDSM  offs4

-xr10 0100  STI        STS   offs4

-xr10 0101  STIH       STSH  offs2

-xr10 0110  STIB       STSB  offs

-xr10 0111  STIM       STSM  offs4

-xr10 1000  DUP        LDSX  offs4

-xr10 1001  ---        LDSXH offs2

-xr10 1010  PUSHS      LDSXB offs

-xr10 1011  POPS       LDSXM offs4

-xr10 1100  ---        STSX  offs4

-xr10 1101  ---        STSXH offs2

-xr10 1110  ---        STSXB offs

-xr10 1111  RET        STSXM offs

-

-xr11 0000  ---        LA    uoffs       

-xr11 0001  ---        LAS   offs

-xr11 0010  ---        LAC   dlbl

-xr11 0011  ---        ---

-xr11 0100  ---        LAX   uoffs

-xr11 0101  ---        LASX  offs

-xr11 0110  ---        SLSP  level

-xr11 0111  ---        SDC   uu

-xr11 1000  ---        ---

-xr11 1001  ---        PCAL  ilbl

-xr11 1010  ---        SYSIO fn,sop

-xr11 1011  ---        LIB   lop

-xr11 1100  ---        FLOAT fop

-xr11 1101  ---       *LABEL ilbl

-xr11 1110  ---       *INCLUDE fn

-xr11 1111  END       *LINE  lineno 

-

-KEY:

-  r      = Reserved bit (must be zero)

-  fn     = 8-bit file number

-  lvl    = 8-bit static nexting level

-  sop    = 17-bit sysio operation

-  lineno = 17-bit line number

-  nn     = 32-bit constant value (signed)

-  uu     = 32-bit constant value (unsigned)

-  fop    = 32-bit floating point operation

-  lop    = 32-bit library call identifier

-  ilbl   = 32-bit Instruction space label number

-  dlbl   = 32-stack data label

-  offs4  = 32-bit word offset with respect to LSP (signed)

-  offs2  = 32-bit halfword offset with respect to LSP (signed)

-  offs   = 32-bit byte offset with respect to LSP (signed)

-  uoffs4 = 32-bit word offset with respect to SPB (unsigned)

-  uoffs2 = 32-bit halfword offset with respect to SPB (unsigned)

-  uoffs  = 32-bit byte offset with respect to SPB (unsigned)

-  c      = string follows psuedo-operation

-      = Indicates pseudo-operations (these are removed

+32-bit op-code bit definitions
+
+Machine model:
+
+  SPB 32-bit Pascal stack base address
+  SP  32-bit Pascal stack pointer
+  LSP 32-bit Level stack pointer
+  CSB 32-bit Character stack base address
+  CSP 32-bit Character stack pointer
+  DS  32-bit Data size register (for multiple reg transfers)
+  PC  32-bit Program Counter
+  CC  Condition code register
+  --- Volatile general purpose registers
+  --- Static general purpose registers
+
+Condition codes:  Z(ero), N(egative)
+
+       +=====+=====+
+       |  Z  |  N  |
+  +=====+=====+=====+
+  | EQ  |  1  |  -  |
+  | NEQ |  0  |  -  |
+  | LT  |  -  |  1  |
+  | GTE |  -  |  0  |
+  | GT  |  0  |  0  |
+  | LTE |  1  |  1  |
+  +=====+=====+=====+
+
+Opcode Encoding Summary:
+
+           0rxx xxxx  1rxxx xxxx
+xr00 0000  NOP        LD   uoffs4
+xr00 0001  NEG        LDH  uoffs3
+xr00 0010  ABS        LDB  uoffs
+xr00 0011  INC        LDM  uoffs4
+xr00 0100  DEC        ST   uoffs4
+xr00 0101  NOT        STH  uoffs2
+xr00 0110  ADD        STB  uoffs
+xr00 0111  SUB        STM  uoffs4
+xr00 1000  MUL        LDX  uoffs4
+xr00 1001  DIV        LDXH uoffs2
+xr00 1010  MOD        LDXB uoffs
+xr00 1011  SLL        LDXM uoffs4
+xr00 1100  SRL        STX  uoffs4
+xr00 1101  SRA        STXH uoffs2
+xr00 1110  OR         STXB uoffs
+xr00 1111  AND        STXM uoffs
+
+xr01 0000  EQUZ       JEQUZ ilbl
+xr01 0001  NEQZ       JNEQZ ilbl
+xr01 0010  LTZ        JLTZ  ilbl
+xr01 0011  GTEZ       JGTEZ ilbl
+xr01 0100  GTZ        JGTZ  ilbl
+xr01 0101  LTEZ       JLTEZ ilbl
+xr01 0110  ---        JMP   ilbl
+xr01 0111  ---        PUSH  nn
+xr01 1000  EQU        JEQU  ilbl
+xr01 1001  NEQ        JNEQ  ilbl
+xr01 1010  LT         JLT   ilbl
+xr01 1011  GTE        JGTE  ilbl    
+xr01 1100  GT         JGT   ilbl
+xr01 1101  LTE        JLTE  ilbl
+xr01 1110  ---        ---
+xr01 1111  BIT        INDS  nn
+
+xr10 0000  LDI        LDS   offs4
+xr10 0001  LDIH       LDSH  offs3
+xr10 0010  LDIB       LDSB  offs
+xr10 0011  LDIM       LDSM  offs4
+xr10 0100  STI        STS   offs4
+xr10 0101  STIH       STSH  offs2
+xr10 0110  STIB       STSB  offs
+xr10 0111  STIM       STSM  offs4
+xr10 1000  DUP        LDSX  offs4
+xr10 1001  ---        LDSXH offs2
+xr10 1010  PUSHS      LDSXB offs
+xr10 1011  POPS       LDSXM offs4
+xr10 1100  ---        STSX  offs4
+xr10 1101  ---        STSXH offs2
+xr10 1110  ---        STSXB offs
+xr10 1111  RET        STSXM offs
+
+xr11 0000  ---        LA    uoffs       
+xr11 0001  ---        LAS   offs
+xr11 0010  ---        LAC   dlbl
+xr11 0011  ---        ---
+xr11 0100  ---        LAX   uoffs
+xr11 0101  ---        LASX  offs
+xr11 0110  ---        SLSP  level
+xr11 0111  ---        SDC   uu
+xr11 1000  ---        ---
+xr11 1001  ---        PCAL  ilbl
+xr11 1010  ---        SYSIO fn,sop
+xr11 1011  ---        LIB   lop
+xr11 1100  ---        FLOAT fop
+xr11 1101  ---       *LABEL ilbl
+xr11 1110  ---       *INCLUDE fn
+xr11 1111  END       *LINE  lineno 
+
+KEY:
+  r      = Reserved bit (must be zero)
+  fn     = 8-bit file number
+  lvl    = 8-bit static nexting level
+  sop    = 17-bit sysio operation
+  lineno = 17-bit line number
+  nn     = 32-bit constant value (signed)
+  uu     = 32-bit constant value (unsigned)
+  fop    = 32-bit floating point operation
+  lop    = 32-bit library call identifier
+  ilbl   = 32-bit Instruction space label number
+  dlbl   = 32-stack data label
+  offs4  = 32-bit word offset with respect to LSP (signed)
+  offs2  = 32-bit halfword offset with respect to LSP (signed)
+  offs   = 32-bit byte offset with respect to LSP (signed)
+  uoffs4 = 32-bit word offset with respect to SPB (unsigned)
+  uoffs2 = 32-bit halfword offset with respect to SPB (unsigned)
+  uoffs  = 32-bit byte offset with respect to SPB (unsigned)
+  c      = string follows pseudo-operation
+      = Indicates pseudo-operations (these are removed
diff --git a/misc/pascal/insn32/include/pinsn32.h b/misc/pascal/insn32/include/pinsn32.h
index e92202402d..29cf363e78 100644
--- a/misc/pascal/insn32/include/pinsn32.h
+++ b/misc/pascal/insn32/include/pinsn32.h
@@ -1,426 +1,426 @@
-/****************************************************************************

- * pinsn32.h

- * 32-bit P-code operation code definitions

- *

- *   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 __PINSN32_H

-#define __PINSN32_H

-

-/****************************************************************************

- * Included Files

- ****************************************************************************/

-

-/****************************************************************************

- * Definitions

- ****************************************************************************/

-

-/* 32-bit op-code bit definitions

- *

- * Machine model:

- *

- *   SPB 32-bit Pascal stack base address

- *   SP  32-bit Pascal stack pointer

- *   LSP 32-bit Level stack pointer

- *   CSB 32-bit Character stack base address

- *   CSP 32-bit Character stack pointer

- *   DS  32-bit Data size register (for multiple reg transfers)

- *   PC  32-bit Program Counter

- *   CC  Condition code register

- *   --- Volatile general purpose registers

- *   --- Static general purpose registers

- *

- * Condition codes:  Z(ero), N(egative)

- *

- *        +=====+=====+

- *        |  Z  |  N  |

- *  +=====+=====+=====+

- *  | EQ  |  1  |  -  |

- *  | NEQ |  0  |  -  |

- *  | LT  |  -  |  1  |

- *  | GTE |  -  |  0  |

- *  | GT  |  0  |  0  |

- *  | LTE |  1  |  1  |

- *  +=====+=====+=====+

- *   

- * Opcode Encoding Summary:

- *

- *            0rxx xxxx  1rxxx xxxx

- * xr00 0000  NOP        LD   uoffs4

- * xr00 0001  NEG        LDH  uoffs3

- * xr00 0010  ABS        LDB  uoffs

- * xr00 0011  INC        LDM  uoffs4

- * xr00 0100  DEC        ST   uoffs4

- * xr00 0101  NOT        STH  uoffs2

- * xr00 0110  ADD        STB  uoffs

- * xr00 0111  SUB        STM  uoffs4

- * xr00 1000  MUL        LDX  uoffs4

- * xr00 1001  DIV        LDXH uoffs2

- * xr00 1010  MOD        LDXB uoffs

- * xr00 1011  SLL        LDXM uoffs4

- * xr00 1100  SRL        STX  uoffs4

- * xr00 1101  SRA        STXH uoffs2

- * xr00 1110  OR         STXB uoffs

- * xr00 1111  AND        STXM uoffs

- *

- * xr01 0000  EQUZ       JEQUZ ilbl

- * xr01 0001  NEQZ       JNEQZ ilbl

- * xr01 0010  LTZ        JLTZ  ilbl

- * xr01 0011  GTEZ       JGTEZ ilbl

- * xr01 0100  GTZ        JGTZ  ilbl

- * xr01 0101  LTEZ       JLTEZ ilbl

- * xr01 0110  ---        JMP   ilbl

- * xr01 0111  ---        PUSH  nn

- * xr01 1000  EQU        JEQU  ilbl

- * xr01 1001  NEQ        JNEQ  ilbl

- * xr01 1010  LT         JLT   ilbl

- * xr01 1011  GTE        JGTE  ilbl    

- * xr01 1100  GT         JGT   ilbl

- * xr01 1101  LTE        JLTE  ilbl

- * xr01 1110  ---        ---

- * xr01 1111  BIT        INDS  nn

- *

- * xr10 0000  LDI        LDS   offs4

- * xr10 0001  LDIH       LDSH  offs3

- * xr10 0010  LDIB       LDSB  offs

- * xr10 0011  LDIM       LDSM  offs4

- * xr10 0100  STI        STS   offs4

- * xr10 0101  STIH       STSH  offs2

- * xr10 0110  STIB       STSB  offs

- * xr10 0111  STIM       STSM  offs4

- * xr10 1000  DUP        LDSX  offs4

- * xr10 1001  ---        LDSXH offs2

- * xr10 1010  PUSHS      LDSXB offs

- * xr10 1011  POPS       LDSXM offs4

- * xr10 1100  ---        STSX  offs4

- * xr10 1101  ---        STSXH offs2

- * xr10 1110  ---        STSXB offs

- * xr10 1111  RET        STSXM offs

- *

- * xr11 0000  ---        LA    uoffs       

- * xr11 0001  ---        LAS   offs

- * xr11 0010  ---        LAC   dlbl

- * xr11 0011  ---        ---

- * xr11 0100  ---        LAX   uoffs

- * xr11 0101  ---        LASX  offs

- * xr11 0110  ---        SLSP  level

- * xr11 0111  ---        SDC   uu

- * xr11 1000  ---        ---

- * xr11 1001  ---        PCAL  ilbl

- * xr11 1010  ---        SYSIO fn,sop

- * xr11 1011  ---        LIB   lop

- * xr11 1100  ---        FLOAT fop

- * xr11 1101  ---       *LABEL ilbl

- * xr11 1110  ---       *INCLUDE fn

- * xr11 1111  END       *LINE  lineno 

- *

- * KEY:

- *   r      = Reserved bit (must be zero)

- *   fn     = 8-bit file number

- *   lvl    = 8-bit static nexting level

- *   sop    = 17-bit sysio operation

- *   lineno = 17-bit line number

- *   nn     = 32-bit constant value (signed)

- *   uu     = 32-bit constant value (unsigned)

- *   fop    = 32-bit floating point operation

- *   lop    = 32-bit library call identifier

- *   ilbl   = 32-bit Instruction space label number

- *   dlbl   = 32-stack data label

- *   offs4  = 32-bit word offset with respect to LSP (signed)

- *   offs2  = 32-bit halfword offset with respect to LSP (signed)

- *   offs   = 32-bit byte offset with respect to LSP (signed)

- *   uoffs4 = 32-bit word offset with respect to SPB (unsigned)

- *   uoffs2 = 32-bit halfword offset with respect to SPB (unsigned)

- *   uoffs  = 32-bit byte offset with respect to SPB (unsigned)

- *   c      = string follows psuedo-operation

- *   *      = Indicates pseudo-operations (these are removed

- *           after final fixup of the object file).

- */

-

-#define o32         (0x80)

-

-#define GETOP(o)    ((o)->op)

-#define PUTOP(o,v)   do { (o)->op = (v); } while (0)

-

-#define GETARG(o)   ((o)->arg)

-#define PUTARG(o,a)  do { (o)->arg = (a); } while (0)

-

-#define ARGONES      0xffffffff

-

-/* The opcode binary is stored in big endian order (so that the opcode

- * always comes first).  The following definitions simplify ordering

- * of byte accesses.

- */

-

-#ifdef CONFIG_ENDIAN_BIG

-# define opB1 0

-# define opB2 1

-# define opB3 2

-# define opB4 3

-#else

-# define opB1 3

-# define opB2 2

-# define opB3 1

-# define opB4 0

-#endif

-

-/** 1-BYTE OPCODES WITH NO ARGUMENTS (other than stack arguments) ***********/

-

-/* Program control (No stack arguments) */

-

-#define oNOP   (0x00)

-

-/* Arithmetic & logical & and integer conversions (One 32-bit stack

- * argument)

- */

-

-#define oNEG   (0x01)

-#define oABS   (0x02)

-#define oINC   (0x03)

-#define oDEC   (0x04)

-#define oNOT   (0x05)

-#define oADD   (0x06)

-#define oSUB   (0x07)

-#define oMUL   (0x08)

-#define oDIV   (0x09)

-#define oMOD   (0x0a)

-#define oSLL   (0x0b)

-#define oSRL   (0x0c)

-#define oSRA   (0x0d)

-#define oOR    (0x0e)

-#define oAND   (0x0f)

-

-/* Comparisons (One 32-bit stack argument) */

-

-#define oEQUZ  (0x10)

-#define oNEQZ  (0x11)

-#define oLTZ   (0x12)

-#define oGTEZ  (0x13)

-#define oGTZ   (0x14)

-#define oLTEZ  (0x15)

-

-/* Comparisons (Two 32-bit stack arguments) */

-

-#define oEQU   (0x18)

-#define oNEQ   (0x19)

-#define oLT    (0x1a)

-#define oGTE   (0x1b)

-#define oGT    (0x1c)

-#define oLTE   (0x1d)

-#define oBIT   (0x1f)

-

-/* Load Immediate */

-

-#define oLDI   (0x20)	/* (One 32-bit stack argument) */

-#define oLDIH  (0x21)	/* (One 32-bit stack argument) */

-#define oLDIB  (0x22)	/* (One 32-bit stack argument) */

-#define oLDIM  (0x23)	/* (Two 32-bit stack argument) */

-

-/* Store Immediate */

-

-#define oSTI   (0x24)	/* (Two 32-bit stack argument) */

-#define oSTIH  (0x25)	/* (Two 32-bit stack argument) */

-#define oSTIB  (0x26)	/* (Two 32-bit stack argument) */

-#define oSTIM  (0x27)	/* (Two+n 32-bit stack argument) */

-

-/* Data stack */

-

-#define oDUP   (0x28)	/* (One 32-bit stack argument) */

-#define oDUPH  (0x29)	/* (One 32-bit stack argument) */

-#define oPUSHS (0x2a)  /* No stack arguments */

-#define oPOPS  (0x2b)	/* (One 32-bit stack argument) */

-

-/* Program control (No stack arguments)

- * Behavior:

- *   Pop return address

- *   Pop saved base register (BR)

- *   Discard saved base address

- *   Set program counter (PC) to return address

- */

-

-#define oRET   (0x2f)

-

-/* System Functions (No stack arguments) */

-

-#define oEND   (0x3f)

-

-/** 4-BYTE OPCODES INCLUDING ONE 32-BIT ARGUMENT ****************************/

-

-/* Load:  arg = unsigned base offset */

-

-#define oLD    (o32|0x00) /* No stack arguments */

-#define oLDH   (o32|0x01) /* No stack arguments */

-#define oLDB   (o32|0x02) /* No stack arguments */

-#define oLDM   (o32|0x03) /* One 32-bit stack argument */

-

-/* Store: arg = unsigned base offset */

-

-#define oST    (o32|0x04) /* One 32-bit stack argument */

-#define oSTH   (o32|0x05) /* One 32-bit stack argument */

-#define oSTB   (o32|0x06) /* One 32-bit stack argument */

-#define oSTM   (o32|0x07) /* One+n 32-bit stack argument */

-

-/* Load Indexed: arg = unsigned base offset */

-

-#define oLDX   (o32|0x08) /* One 32-bit stack argument */

-#define oLDXH  (o32|0x09) /* One 32-bit stack argument */

-#define oLDXB  (o32|0x0a) /* One 32-bit stack argument */

-#define oLDXM  (o32|0x0b) /* Two 32-bit stack argument */

-

-/* Store Indexed: arg = unsigned base offset */

-

-#define oSTX   (o32|0x0c) /* Two 32-bit stack argument */

-#define oSTXH  (o32|0x0d) /* Two 32-bit stack argument */

-#define oSTXB  (o32|0x0e) /* Two 32-bit stack argument */

-#define oSTXM  (o32|0x0f) /* Two+n 32-bit stack argument */

-

-/* Program control:  arg = unsigned label (One 32-bit stack argument) */

-

-#define oJEQUZ (o32|0x10)

-#define oJNEQZ (o32|0x11)

-#define oJLTZ  (o32|0x12)

-#define oJGTEZ (o32|0x13)

-#define oJGTZ  (o32|0x14)

-#define oJLTEZ (o32|0x15)

-

-/* Program control:  arg = unsigned label (no stack arguments) */

-

-#define oJMP   (o32|0x16)

-

-/* Data stack:  arg = 32 bit signed data (no stack arguments) */

-

-#define oPUSH  (o32|0x17)

-

-/* Program control:  arg = unsigned label (One 32-bit stack argument) */

-

-#define oJEQU  (o32|0x18)

-#define oJNEQ  (o32|0x19)

-#define oJLT   (o32|0x1a)

-#define oJGTE  (o32|0x1b)

-#define oJGT   (o32|0x1c)

-#define oJLTE  (o32|0x1d)

-

-/* Data stack:  arg = 32 bit signed data (no stack arguments) */

-

-#define oINDS  (o32|0x1f)

-

-/* Load:  Uses LSP; arg = signed frame offset */

-

-#define oLDS   (o32|0x20) /* No stack arguments */

-#define oLDSH  (o32|0x21) /* No stack arguments */

-#define oLDSB  (o32|0x22) /* No stack arguments */

-#define oLDSM  (o32|0x23) /* One 32-bit stack argument */

-

-/* Store: Uses LSP; arg = signed frame offset */

-

-#define oSTS   (o32|0x24) /* One 32-bit stack argument */

-#define oSTSH  (o32|0x25) /* One 32-bit stack argument */

-#define oSTSB  (o32|0x26) /* One 32-bit stack argument */

-#define oSTSM  (o32|0x27) /* One+n 32-bit stack argument */

-

-/* Load Indexed: Uses LSP; arg = signed frame offset */

-

-#define oLDSX  (o32|0x28) /* One 32-bit stack argument */

-#define oLDSXH (o32|0x29) /* One 32-bit stack argument */

-#define oLDSXB (o32|0x2a) /* One 32-bit stack argument */

-#define oLDSXM (o32|0x2b) /* Two 32-bit stack argument */

-

-/* Store Indexed: Uses LSP; arg = signed frame offset */

-

-#define oSTSX  (o32|0x2c) /* Two 32-bit stack argument */

-#define oSTSXH (o32|0x2d) /* Two 32-bit stack argument */

-#define oSTSXB (o32|0x2e) /* Two 32-bit stack argument */

-#define oSTSXM (o32|0x2f) /* Two+n 32-bit stack argument */

-

-/* Load address relative to stack base: arg = unsigned offset */

-

-#define oLA    (o32|0x30)

-

-/* Load address: Uses SLP, arg = signed frame offset */

-

-#define oLAS   (o32|0x31) /* No stack arguments */

-

-/* Load absolute stack address:  arg = RODATA offset (No stack arguments) */

-

-#define oLAC   (o32|0x32)

-

-/* Load address relative to stack base: arg = unsigned offset, TOS=index */

-

-#define oLAX   (o32|0x34)

-

-/* Load address indexed: Uses SLP, arg = signed frame offset */

-

-#define oLASX  (o32|0x35) /* No stack arguments */

-

-/* Set LSP:  arg = new level that evaluates to LSP value */

-

-#define oSLSP  (o32|0x36)

-

-/* Set DS:  arg = new byte count in DS register */

-

-#define oSDC   (o32|0x37)

-

-/* Program Control:  Uses LSP; arg = unsigned label

- *                  (No stack arguments)

- * Behavior:

- *   Push base address of level

- *   Push base register (BR) value

- *   Set new base register value (BR) as top of stack

- *   Push return address

- *   Set program counter (PC) for address associated with label

- */

-

-#define oPCAL  (o32|0x39)

-

-/* System calls:   arg = file number | sub-function code */

-

-#define oSYSIO (o32|0x3a)

-

-/* System functions: arg = 32-bit library call identifier */

-

-#define oLIB   (o32|0x3b)

-

-/* Floating point operations: arg = FP op-code */

-

-#define oFLOAT (o32|0x3c)

-

-/* Program control:  arg = unsigned label (no stack arguments) */

-

-#define oLABEL (o32|0x3d)

-

-/* Psuedo-operations:  arg = file number OR line number */

-

-#define oINCLUDE (o32|0x3e)

-#define oLINE    (o32|0x3f)

-

-#endif /* __PINSN32_H */

+/****************************************************************************
+ * pinsn32.h
+ * 32-bit P-code operation code definitions
+ *
+ *   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 __PINSN32_H
+#define __PINSN32_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* 32-bit op-code bit definitions
+ *
+ * Machine model:
+ *
+ *   SPB 32-bit Pascal stack base address
+ *   SP  32-bit Pascal stack pointer
+ *   LSP 32-bit Level stack pointer
+ *   CSB 32-bit Character stack base address
+ *   CSP 32-bit Character stack pointer
+ *   DS  32-bit Data size register (for multiple reg transfers)
+ *   PC  32-bit Program Counter
+ *   CC  Condition code register
+ *   --- Volatile general purpose registers
+ *   --- Static general purpose registers
+ *
+ * Condition codes:  Z(ero), N(egative)
+ *
+ *        +=====+=====+
+ *        |  Z  |  N  |
+ *  +=====+=====+=====+
+ *  | EQ  |  1  |  -  |
+ *  | NEQ |  0  |  -  |
+ *  | LT  |  -  |  1  |
+ *  | GTE |  -  |  0  |
+ *  | GT  |  0  |  0  |
+ *  | LTE |  1  |  1  |
+ *  +=====+=====+=====+
+ *   
+ * Opcode Encoding Summary:
+ *
+ *            0rxx xxxx  1rxxx xxxx
+ * xr00 0000  NOP        LD   uoffs4
+ * xr00 0001  NEG        LDH  uoffs3
+ * xr00 0010  ABS        LDB  uoffs
+ * xr00 0011  INC        LDM  uoffs4
+ * xr00 0100  DEC        ST   uoffs4
+ * xr00 0101  NOT        STH  uoffs2
+ * xr00 0110  ADD        STB  uoffs
+ * xr00 0111  SUB        STM  uoffs4
+ * xr00 1000  MUL        LDX  uoffs4
+ * xr00 1001  DIV        LDXH uoffs2
+ * xr00 1010  MOD        LDXB uoffs
+ * xr00 1011  SLL        LDXM uoffs4
+ * xr00 1100  SRL        STX  uoffs4
+ * xr00 1101  SRA        STXH uoffs2
+ * xr00 1110  OR         STXB uoffs
+ * xr00 1111  AND        STXM uoffs
+ *
+ * xr01 0000  EQUZ       JEQUZ ilbl
+ * xr01 0001  NEQZ       JNEQZ ilbl
+ * xr01 0010  LTZ        JLTZ  ilbl
+ * xr01 0011  GTEZ       JGTEZ ilbl
+ * xr01 0100  GTZ        JGTZ  ilbl
+ * xr01 0101  LTEZ       JLTEZ ilbl
+ * xr01 0110  ---        JMP   ilbl
+ * xr01 0111  ---        PUSH  nn
+ * xr01 1000  EQU        JEQU  ilbl
+ * xr01 1001  NEQ        JNEQ  ilbl
+ * xr01 1010  LT         JLT   ilbl
+ * xr01 1011  GTE        JGTE  ilbl    
+ * xr01 1100  GT         JGT   ilbl
+ * xr01 1101  LTE        JLTE  ilbl
+ * xr01 1110  ---        ---
+ * xr01 1111  BIT        INDS  nn
+ *
+ * xr10 0000  LDI        LDS   offs4
+ * xr10 0001  LDIH       LDSH  offs3
+ * xr10 0010  LDIB       LDSB  offs
+ * xr10 0011  LDIM       LDSM  offs4
+ * xr10 0100  STI        STS   offs4
+ * xr10 0101  STIH       STSH  offs2
+ * xr10 0110  STIB       STSB  offs
+ * xr10 0111  STIM       STSM  offs4
+ * xr10 1000  DUP        LDSX  offs4
+ * xr10 1001  ---        LDSXH offs2
+ * xr10 1010  PUSHS      LDSXB offs
+ * xr10 1011  POPS       LDSXM offs4
+ * xr10 1100  ---        STSX  offs4
+ * xr10 1101  ---        STSXH offs2
+ * xr10 1110  ---        STSXB offs
+ * xr10 1111  RET        STSXM offs
+ *
+ * xr11 0000  ---        LA    uoffs       
+ * xr11 0001  ---        LAS   offs
+ * xr11 0010  ---        LAC   dlbl
+ * xr11 0011  ---        ---
+ * xr11 0100  ---        LAX   uoffs
+ * xr11 0101  ---        LASX  offs
+ * xr11 0110  ---        SLSP  level
+ * xr11 0111  ---        SDC   uu
+ * xr11 1000  ---        ---
+ * xr11 1001  ---        PCAL  ilbl
+ * xr11 1010  ---        SYSIO fn,sop
+ * xr11 1011  ---        LIB   lop
+ * xr11 1100  ---        FLOAT fop
+ * xr11 1101  ---       *LABEL ilbl
+ * xr11 1110  ---       *INCLUDE fn
+ * xr11 1111  END       *LINE  lineno 
+ *
+ * KEY:
+ *   r      = Reserved bit (must be zero)
+ *   fn     = 8-bit file number
+ *   lvl    = 8-bit static nexting level
+ *   sop    = 17-bit sysio operation
+ *   lineno = 17-bit line number
+ *   nn     = 32-bit constant value (signed)
+ *   uu     = 32-bit constant value (unsigned)
+ *   fop    = 32-bit floating point operation
+ *   lop    = 32-bit library call identifier
+ *   ilbl   = 32-bit Instruction space label number
+ *   dlbl   = 32-stack data label
+ *   offs4  = 32-bit word offset with respect to LSP (signed)
+ *   offs2  = 32-bit halfword offset with respect to LSP (signed)
+ *   offs   = 32-bit byte offset with respect to LSP (signed)
+ *   uoffs4 = 32-bit word offset with respect to SPB (unsigned)
+ *   uoffs2 = 32-bit halfword offset with respect to SPB (unsigned)
+ *   uoffs  = 32-bit byte offset with respect to SPB (unsigned)
+ *   c      = string follows pseudo-operation
+ *   *      = Indicates pseudo-operations (these are removed
+ *           after final fixup of the object file).
+ */
+
+#define o32         (0x80)
+
+#define GETOP(o)    ((o)->op)
+#define PUTOP(o,v)   do { (o)->op = (v); } while (0)
+
+#define GETARG(o)   ((o)->arg)
+#define PUTARG(o,a)  do { (o)->arg = (a); } while (0)
+
+#define ARGONES      0xffffffff
+
+/* The opcode binary is stored in big endian order (so that the opcode
+ * always comes first).  The following definitions simplify ordering
+ * of byte accesses.
+ */
+
+#ifdef CONFIG_ENDIAN_BIG
+# define opB1 0
+# define opB2 1
+# define opB3 2
+# define opB4 3
+#else
+# define opB1 3
+# define opB2 2
+# define opB3 1
+# define opB4 0
+#endif
+
+/** 1-BYTE OPCODES WITH NO ARGUMENTS (other than stack arguments) ***********/
+
+/* Program control (No stack arguments) */
+
+#define oNOP   (0x00)
+
+/* Arithmetic & logical & and integer conversions (One 32-bit stack
+ * argument)
+ */
+
+#define oNEG   (0x01)
+#define oABS   (0x02)
+#define oINC   (0x03)
+#define oDEC   (0x04)
+#define oNOT   (0x05)
+#define oADD   (0x06)
+#define oSUB   (0x07)
+#define oMUL   (0x08)
+#define oDIV   (0x09)
+#define oMOD   (0x0a)
+#define oSLL   (0x0b)
+#define oSRL   (0x0c)
+#define oSRA   (0x0d)
+#define oOR    (0x0e)
+#define oAND   (0x0f)
+
+/* Comparisons (One 32-bit stack argument) */
+
+#define oEQUZ  (0x10)
+#define oNEQZ  (0x11)
+#define oLTZ   (0x12)
+#define oGTEZ  (0x13)
+#define oGTZ   (0x14)
+#define oLTEZ  (0x15)
+
+/* Comparisons (Two 32-bit stack arguments) */
+
+#define oEQU   (0x18)
+#define oNEQ   (0x19)
+#define oLT    (0x1a)
+#define oGTE   (0x1b)
+#define oGT    (0x1c)
+#define oLTE   (0x1d)
+#define oBIT   (0x1f)
+
+/* Load Immediate */
+
+#define oLDI   (0x20)	/* (One 32-bit stack argument) */
+#define oLDIH  (0x21)	/* (One 32-bit stack argument) */
+#define oLDIB  (0x22)	/* (One 32-bit stack argument) */
+#define oLDIM  (0x23)	/* (Two 32-bit stack argument) */
+
+/* Store Immediate */
+
+#define oSTI   (0x24)	/* (Two 32-bit stack argument) */
+#define oSTIH  (0x25)	/* (Two 32-bit stack argument) */
+#define oSTIB  (0x26)	/* (Two 32-bit stack argument) */
+#define oSTIM  (0x27)	/* (Two+n 32-bit stack argument) */
+
+/* Data stack */
+
+#define oDUP   (0x28)	/* (One 32-bit stack argument) */
+#define oDUPH  (0x29)	/* (One 32-bit stack argument) */
+#define oPUSHS (0x2a)  /* No stack arguments */
+#define oPOPS  (0x2b)	/* (One 32-bit stack argument) */
+
+/* Program control (No stack arguments)
+ * Behavior:
+ *   Pop return address
+ *   Pop saved base register (BR)
+ *   Discard saved base address
+ *   Set program counter (PC) to return address
+ */
+
+#define oRET   (0x2f)
+
+/* System Functions (No stack arguments) */
+
+#define oEND   (0x3f)
+
+/** 4-BYTE OPCODES INCLUDING ONE 32-BIT ARGUMENT ****************************/
+
+/* Load:  arg = unsigned base offset */
+
+#define oLD    (o32|0x00) /* No stack arguments */
+#define oLDH   (o32|0x01) /* No stack arguments */
+#define oLDB   (o32|0x02) /* No stack arguments */
+#define oLDM   (o32|0x03) /* One 32-bit stack argument */
+
+/* Store: arg = unsigned base offset */
+
+#define oST    (o32|0x04) /* One 32-bit stack argument */
+#define oSTH   (o32|0x05) /* One 32-bit stack argument */
+#define oSTB   (o32|0x06) /* One 32-bit stack argument */
+#define oSTM   (o32|0x07) /* One+n 32-bit stack argument */
+
+/* Load Indexed: arg = unsigned base offset */
+
+#define oLDX   (o32|0x08) /* One 32-bit stack argument */
+#define oLDXH  (o32|0x09) /* One 32-bit stack argument */
+#define oLDXB  (o32|0x0a) /* One 32-bit stack argument */
+#define oLDXM  (o32|0x0b) /* Two 32-bit stack argument */
+
+/* Store Indexed: arg = unsigned base offset */
+
+#define oSTX   (o32|0x0c) /* Two 32-bit stack argument */
+#define oSTXH  (o32|0x0d) /* Two 32-bit stack argument */
+#define oSTXB  (o32|0x0e) /* Two 32-bit stack argument */
+#define oSTXM  (o32|0x0f) /* Two+n 32-bit stack argument */
+
+/* Program control:  arg = unsigned label (One 32-bit stack argument) */
+
+#define oJEQUZ (o32|0x10)
+#define oJNEQZ (o32|0x11)
+#define oJLTZ  (o32|0x12)
+#define oJGTEZ (o32|0x13)
+#define oJGTZ  (o32|0x14)
+#define oJLTEZ (o32|0x15)
+
+/* Program control:  arg = unsigned label (no stack arguments) */
+
+#define oJMP   (o32|0x16)
+
+/* Data stack:  arg = 32 bit signed data (no stack arguments) */
+
+#define oPUSH  (o32|0x17)
+
+/* Program control:  arg = unsigned label (One 32-bit stack argument) */
+
+#define oJEQU  (o32|0x18)
+#define oJNEQ  (o32|0x19)
+#define oJLT   (o32|0x1a)
+#define oJGTE  (o32|0x1b)
+#define oJGT   (o32|0x1c)
+#define oJLTE  (o32|0x1d)
+
+/* Data stack:  arg = 32 bit signed data (no stack arguments) */
+
+#define oINDS  (o32|0x1f)
+
+/* Load:  Uses LSP; arg = signed frame offset */
+
+#define oLDS   (o32|0x20) /* No stack arguments */
+#define oLDSH  (o32|0x21) /* No stack arguments */
+#define oLDSB  (o32|0x22) /* No stack arguments */
+#define oLDSM  (o32|0x23) /* One 32-bit stack argument */
+
+/* Store: Uses LSP; arg = signed frame offset */
+
+#define oSTS   (o32|0x24) /* One 32-bit stack argument */
+#define oSTSH  (o32|0x25) /* One 32-bit stack argument */
+#define oSTSB  (o32|0x26) /* One 32-bit stack argument */
+#define oSTSM  (o32|0x27) /* One+n 32-bit stack argument */
+
+/* Load Indexed: Uses LSP; arg = signed frame offset */
+
+#define oLDSX  (o32|0x28) /* One 32-bit stack argument */
+#define oLDSXH (o32|0x29) /* One 32-bit stack argument */
+#define oLDSXB (o32|0x2a) /* One 32-bit stack argument */
+#define oLDSXM (o32|0x2b) /* Two 32-bit stack argument */
+
+/* Store Indexed: Uses LSP; arg = signed frame offset */
+
+#define oSTSX  (o32|0x2c) /* Two 32-bit stack argument */
+#define oSTSXH (o32|0x2d) /* Two 32-bit stack argument */
+#define oSTSXB (o32|0x2e) /* Two 32-bit stack argument */
+#define oSTSXM (o32|0x2f) /* Two+n 32-bit stack argument */
+
+/* Load address relative to stack base: arg = unsigned offset */
+
+#define oLA    (o32|0x30)
+
+/* Load address: Uses SLP, arg = signed frame offset */
+
+#define oLAS   (o32|0x31) /* No stack arguments */
+
+/* Load absolute stack address:  arg = RODATA offset (No stack arguments) */
+
+#define oLAC   (o32|0x32)
+
+/* Load address relative to stack base: arg = unsigned offset, TOS=index */
+
+#define oLAX   (o32|0x34)
+
+/* Load address indexed: Uses SLP, arg = signed frame offset */
+
+#define oLASX  (o32|0x35) /* No stack arguments */
+
+/* Set LSP:  arg = new level that evaluates to LSP value */
+
+#define oSLSP  (o32|0x36)
+
+/* Set DS:  arg = new byte count in DS register */
+
+#define oSDC   (o32|0x37)
+
+/* Program Control:  Uses LSP; arg = unsigned label
+ *                  (No stack arguments)
+ * Behavior:
+ *   Push base address of level
+ *   Push base register (BR) value
+ *   Set new base register value (BR) as top of stack
+ *   Push return address
+ *   Set program counter (PC) for address associated with label
+ */
+
+#define oPCAL  (o32|0x39)
+
+/* System calls:   arg = file number | sub-function code */
+
+#define oSYSIO (o32|0x3a)
+
+/* System functions: arg = 32-bit library call identifier */
+
+#define oLIB   (o32|0x3b)
+
+/* Floating point operations: arg = FP op-code */
+
+#define oFLOAT (o32|0x3c)
+
+/* Program control:  arg = unsigned label (no stack arguments) */
+
+#define oLABEL (o32|0x3d)
+
+/* Pseudo-operations:  arg = file number OR line number */
+
+#define oINCLUDE (o32|0x3e)
+#define oLINE    (o32|0x3f)
+
+#endif /* __PINSN32_H */
diff --git a/misc/pascal/insn32/libinsn/pdasm.c b/misc/pascal/insn32/libinsn/pdasm.c
index 75d79d7b62..31d45088fc 100644
--- a/misc/pascal/insn32/libinsn/pdasm.c
+++ b/misc/pascal/insn32/libinsn/pdasm.c
@@ -303,7 +303,7 @@ static const struct optab_s g_sArg32OpTable[64] =
 
   /* 0xbd */ { NULL, LABEL_DEC },
 
-  /* Psuedo-operations:  arg = file number OR line number */
+  /* Pseudo-operations:  arg = file number OR line number */
 
   /* 0xbe */ { "INCLUDE ", FILENO },
   /* 0xbf */ { "LINE ", LINENO },
diff --git a/misc/pascal/pascal/pgen.c b/misc/pascal/pascal/pgen.c
index fc108e3a6c..25d4d956b4 100644
--- a/misc/pascal/pascal/pgen.c
+++ b/misc/pascal/pascal/pgen.c
@@ -272,7 +272,7 @@ void pas_GenerateIoOperation(uint16_t ioOpcode, uint16_t fileNumber)
 }
 
 /***********************************************************************/
-/* Generate a psuedo call to a built-in, standard pascal function */
+/* Generate a pseudo call to a built-in, standard pascal function */
 
 void pas_BuiltInFunctionCall(uint16_t libOpcode)
 {
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index 1061f39ae5..6fd4979433 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -3119,7 +3119,7 @@
 	  function called stm32_clockenable() that can be used by PM logic to re-start
 	  the PLL after re-awakening from deep sleep modes.
 	* fs/fs_foreachinode.c and fs/fs_foreachmountpoint.c:  All logic to traverse
-	  inodes and mountpoints in the NuttX psuedo-file system.
+	  inodes and mountpoints in the NuttX pseudo-file system.
 	* fs/fat/fs_fat32.c: Max. filename length reported by statfs() was wrong
 	  if FAT long file names were enabled.
 	* lib/stdio/lib_libvsprintf.c:  Fieldwidth and justification were not
diff --git a/nuttx/Documentation/NfsHowto.html b/nuttx/Documentation/NfsHowto.html
index 0f08f4abe5..0fee8baf77 100644
--- a/nuttx/Documentation/NfsHowto.html
+++ b/nuttx/Documentation/NfsHowto.html
@@ -1,388 +1,388 @@
-<html>

-<head>

-<title>NFS Client How-To</title>

-</head>

-<body background="backgd.gif">

-<hr><hr>

-

-<table width ="100%">

-  <tr align="center" bgcolor="#e4e4e4">

-    <td>

-      <h1><big><font color="#3c34ec"><i>NFS Client How-To</i></font></big></h1>

-      <p>Last Updated: June 18, 2012</p>

-    </td>

-  </tr>

-</table>

-<hr><hr>

-

-<table width ="100%">

-  <tr bgcolor="#e4e4e4">

-    <td>

-      <h1>Table of Contents</h1>

-    </td>

-  </tr>

-</table>

-

-<center><table width ="80%">

-<tr>

-<td>

-<table>

-<tr>

-  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>

-  <td>

-    <a href="#nfsconfiguration">Adding NFS to the NuttX Configuration</a>

-  </td>

-</tr>

-</table>

-<table>

-<tr>

-  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>

-  <td>

-    <a href="#mountinterface">Mount Interface</a>

-  </td>

-</tr>

-</table>

-<table>

-<tr>

-  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>

-  <td>

-    <a href="#nfsmount">NFS Mount Command</a>

-  </td>

-</tr>

-</table>

-<table>

-<tr>

-  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>

-  <td>

-    <a href="#serverconfig">Configuring the NFS server (Ubuntu)</a>

-  </td>

-</tr>

-</table>

-</td>

-</tr>

-</table></center>

-

-<table width ="100%">

-  <tr bgcolor="#e4e4e4">

-  <td>

-    <a name="nfsconfiguration"><h1>Adding NFS to the NuttX Configuration</h1></a>

-  </td>

-  </tr>

-</table>

-

-<p>

-  The NFS client is easily added to your configuration:

-  You simply need to add <code>CONFIG_NFS</code> to your <code>nuttx/.config</code> file.

-  There are, however, a few dependencies on other system settings:

-</p>

-<ol>

-  <li>

-    First, there are number of things that you must configure in order to be able to use any file system:

-  </li>

-  <ul>

-    <li>

-      <code>CONFIG_NFILE_DESCRIPTORS > 0</code>.  You must include support for file descriptors.

-    </li>

-    <li>

-      <code>CONFIG_DISABLE_MOUNTPOINT=n</code>.  You must include support for mount points in the psuedo-file system.

-    </li>

-  </ul>

-  <li>

-    And there are several dependencies on the networking configuration.

-    At a minimum, you need to have the following selections:

-  </li>

-  <ul>

-    <li>

-      <code>CONFIG_NET=y</code>.  General networking support.

-    </li>

-    <li>

-      <code>CONFIG_NET_UDP=y</code>.  Support for UDP.

-    </li>

-  </ul>

-</ol>

-

-<table width ="100%">

-  <tr bgcolor="#e4e4e4">

-  <td>

-    <a name="mountinterface"><h1>Mount Interface</h1></a>

-  </td>

-  </tr>

-</table>

-

-<p>

-  A low-level, C-callable interface is provided to mount a file system.

-  That interface is called <code>mount()</code> and is mentioned in the <a href="NuttxPortingGuide.html#NxFileSystem"><code>porting guide</code></a> and is prototyped in the header file <code>include/sys/mount.h</code>:

-</p>

-<ul><pre>

-int mount(const char *source, const char *target, const char *filesystemtype, unsigned long mountflags, const void *data);

-</pre></ul>

-<p>

-  <b>Synopsis</b>:

-   <code>mount()</code> attaches the filesystem specified by the <code>source</code> block device name into the root file system at the path specified by <code>target</code>.

-</p>

-<p>

-  <b>Input Paramters</b>:

-  <ul>

-    <li><code>source</code>.  A null-terminated string providing the fill path to a block driver in the NuttX psuedo-file system.

-    <li><code>target</code>.  The location in the NuttX psuedo-file system where the volume will be mounted.

-    <li><code>filesystemtype</code>.  A string identifying the type of file system to use.

-    <li><code>mountflags</code>.  Various flags that can be used to qualify how the file system is mounted.

-    <li><code>data</code>.  Opaque data that is passed to the file system with the mount occurs.

-  </ul>

-</p>

-<p>

-  <b>Returned Values</b>

-  Zero is returned on success; -1 is returned on an error and <code>errno</code> is set appropriately:

-  <ul>

-    <li><code>EACCES</code>.

-      A component of a path was not searchable or mounting a read-onlyfilesystem was attempted without giving the <code>MS_RDONLY</code> flag.

-    </li>

-    <li><code>EBUSY</code>.

-      <code>source</code> is already  mounted.

-    </li>

-    <li><code>EFAULT</code>.

-      One of the pointer arguments points outside the user address space.

-    </li>

-    <li><code>EINVAL</code>.

-      <code>source</code> had an invalid superblock.

-    </li>

-    <li><code>ENODEV</code>.

-      <code>filesystemtype</code> not configured

-    </li>

-    <li><code>ENOENT</code>.

-      A pathname was empty or had a nonexistent component.

-    </li>

-    <li><code>ENOMEM</code>.

-      Could not allocate a memory to copy filenames or data into.

-    </li>

-    <li><code>ENOTBLK</code>.

-      <code>source</code> is not a block device

-    </li>

- </ul>

-</p>

-<p>

-  This same interface can be used to mount a remote, NFS file system using some special parameters.

-  The NFS mount differs from the <i>normal</i> file system mount in that: (1) there is no block driver for the NFS file system, and (2) special parameters must be passed as <code>data</code> to describe the remote NFS server.

-  Thus the following code snippet might represent how an NFS file system is mounted:

-</p>

-<ul><pre>

-#include &lt;sys/mount.h&gt;

-#include &lt;nuttx/fs/nfs.h&gt;

-

-struct nfs_args data;

-char *mountpoint;

-

-ret = mount(NULL, mountpoint, string &quot;nfs&quot;, 0, (FAR void *)&data);

-</pre></ul>

-<p>

-  NOTE that:  (1) the block driver paramter is <code>NULL</code>.

-  The <code>mount()</code> is smart enough to know that no block driver is needed with the NFS file system.

-  (2) The NFS file system is identified with the simple string &quot;nfs&quot;

-  (3) A reference to <code>struct nfs_args</code> is passed as an NFS-specific argument.

-</p>

-<p>

-  The NFS-specific interface is described in the file <code>include/nuttx/fs/nfs.h</code>.

-  There you can see that <code>struct nfs_args</code> is defined as:

-</p>

-<ul><pre>

-struct nfs_args

-{

-  uint8_t  addrlen;               /* Length of address */

-  uint8_t  sotype;                /* Socket type */

-  uint8_t  flags;                 /* Flags, determines if following are valid: */

-  uint8_t  timeo;                 /* Time value in deciseconds (with NFSMNT_TIMEO) */

-  uint8_t  retrans;               /* Times to retry send (with NFSMNT_RETRANS) */

-  uint16_t wsize;                 /* Write size in bytes (with NFSMNT_WSIZE) */

-  uint16_t rsize;                 /* Read size in bytes (with NFSMNT_RSIZE) */

-  uint16_t readdirsize;           /* readdir size in bytes (with NFSMNT_READDIRSIZE) */

-  char    *path;                  /* Server's path of the directory being mount */

-  struct   sockaddr_storage addr; /* File server address (requires 32-bit alignment) */

-};

-</pre></ul>

-

-<table width ="100%">

-  <tr bgcolor="#e4e4e4">

-  <td>

-    <a name="nfsmount"><h1>NFS Mount Command</h1></a>

-  </td>

-  </tr>

-</table>

-

-<p>

-  The <a href="NuttShell.html">NuttShell (NSH)</a> also supports a command called <code>nfsmount</code>

-  that can be used to mount a remote file system via the NSH command line.

-</p>

-<p>

-  <b>Command Syntax:</b>

-</p>

-<ul><pre>

-nfsmount &lt;server-address&gt; &lt;mount-point&gt; &lt;remote-path&gt;

-</pre></ul>

-<p>

-  <b>Synopsis</b>.

-  The <code>nfsmount</code> command mounts a network file system in the NuttX psuedo filesystem.

-  The <code>nfsmount</code> will use NFSv3 UDP protocol to mount the remote file system.

-</p>

-<p>

-  <b>Command Line Arguments</b>.

-  The <code>nfsmount</code> takes three arguments:

-</p>

-<ol>

-  <li>

-    The <code>&lt;server-address&gt;</code> is the IP address of the server exporting the file system you wish to mount.

-    This implementation of NFS for the NuttX RTOS is only for a local area network, so the server and client must be in the same network.

-  </li>

-  <li>

-    The <code>&lt;mount-point &gt;</code> is the location in the NuttX pseudo filesystem where the mounted volume will appear.

-    This mount point can only reside in the  NuttX pseudo filesystem.

-    By convention, this mount point is a subdirectory under <code>/mnt</code>.

-    The mount command will create whatever  psuedo directories that may be needed to complete the full path (but the full path must not already exist).

-  </li>

-  <li>

-    The <code>&lt;remote-path&gt;</code> is the file system <code>/</code> directory being exported from server.

-    This <code>/</code> directory must have been configured for exportation on the server before when the NFS server was set up.

-  </li>

-</ol>

-

-<p>

-  After the volume has been mounted in the NuttX pseudo filesystem, it may be access in the same way as other objects in the file system.

-</p>

-<p>

-  <b>Example</b>.

-  Suppose the the NFS server has been configured to export the directory <code>/export/shared</code>.

-  The the following command would mount that file system (assuming that the target also has privileges to mount the file system).

-</p>

-<ul><pre>

-NuttShell (NSH)

-nsh&gt; ls /mnt

-/mnt:

-nsh: ls: no such directory: /mnt

-nsh&gt; nfsmount 10.0.0.1 /mnt/nfs /export/shared

-nsh&gt; ls -l /mnt/nfs

-/mnt/nfs:

- drwxrwxrwx   4096 ..

- drwxrwxrwx   4096 testdir/

- -rw-rw-rw-      6 ctest.txt

- -rw-r--r--     15 btest.txt

- drwxrwxrwx   4096 .

-nsh&gt; echo &quot;This is a test&quot; &gt;/mnt/nfs/testdir/testfile.txt

-nsh&gt; ls -l /mnt/nfs/testdir

-/mnt/nfs/testdir:

- -rw-rw-rw-     21 another.txt

- drwxrwxrwx   4096 ..

- drwxrwxrwx   4096 .

- -rw-rw-rw-     16 testfile.txt

-nsh&gt; cat /mnt/nfs/testdir/testfile.txt

-This is a test

-</pre></ul>

-

-<table width ="100%">

-  <tr bgcolor="#e4e4e4">

-  <td>

-    <a name="serverconfig"><h1>Configuring the NFS server (Ubuntu)</h1></a>

-  </td>

-  </tr>

-</table>

-

-<p>

-  Setting up the server will be done in two steps:

-  First, setting up the configuration file for NFS, and then starting the NFS services.

-  But first, you need to install the nfs server on Ubuntu with the these two commands:

-</p>

-<ul><pre>

-# sudo apt-get install nfs-common</FONT>

-# sudo apt-get install nfs-kernel-server</FONT>

-</pre></ul>

-

-<p>

-  After that, we need to make or choose the directory we want to export from the NFS server.

-  In our case, we are going to make a new directory called <code>/export</code>.

-</p>

-<ul><pre>

-# sudo mkdir /export

-</pre></ul>

-<p>

-  It is important that <code>/export</code> directory allow access to everyone (777 permissions) as we will be accessing the NFS share from the client with no authentication. 

-</p>

-<ul><pre>

-# sudo chmod 777 /export

-</pre></ul>

-<p>

-  When all this is done, we will need to edit the configuration file to set up an NFS server: <code>/etc/exports</code>.

-  This file contains a list of entries;

-  each entry indicates a volume that is shared and how it is shared.

-  For more information for a complete description of all the setup options for this file you can check in the man pages (<code>man export</code>).</p>

-  An entry in <code>/etc/exports</code> will typically look like this:

-</p>

-<ul><pre>

-directory machine1(option11,option12)

-</pre></ul>

-<p>

-  So for our example we export <coce>/export</code> to the client 10.0.0.2 add the entry:

-</p>

-<ul><pre>

-/export 10.0.0.2(rw)

-</pre></ul>

-<p>

-  In our case we are using all the default options except for the <code>ro</code> that we replaced with <code>rw</code>  so that our client will have read and write access to the directory that we are exporting.

-</p>

-</p>

-  After we do all the require configurations, we are ready to start the server with the next command: 

-</p>

-<ul><pre>

-# sudo /etc/init.d/nfs-kernel-server start

-</pre></ul>

-</p>

-  Note: If you later decide to add more NFS exports to the /etc/exports file, you will need to either restart NFS daemon

-or run command exportfs.

-</p>

-<ul><pre>

-# sudo /etc/init.d/nfs-kernel-server start 

-</pre></ul>

-<p>Or</p>

-<ul><pre>

-# exportfs -ra

-</pre></ul>

-<p>

-  Now we can check if the export directory and our mount point is properly set up.

-</p>

-<ul><pre>

-# sudo showmount -e

-# sudo showmount -a

-</pre></ul>

-<p>

-  And also we can verify if NFS is running in the system with:

-</p>

-<P STYLE="margin-left: 0.49in; margin-bottom: 0in; line-height: 100%">

-<ul><pre>

-# rpcinfo &ndash;p</FONT>

-program vers proto   port

-   100000   2   tcp    111  portmapper

-   100000   2   udp    111  portmapper

-   100011   1   udp   749  rquotad

-   100011   2   udp   749  rquotad

-   100005   1   udp    759  mountd

-   100005   1   tcp    761  mountd

-   100005   2   udp    764  mountd

-   100005   2   tcp    766  mountd

-   100005   3   udp    769  mountd

-   100005   3   tcp    771  mountd

-   100003   2   udp   2049  nfs

-   100003   3   udp   2049  nfs

-   300019   1   tcp    830  amd

-   300019   1   udp    831  amd

-   100024   1   udp    944  status

-   100024   1   tcp    946  status

-   100021   1   udp   1042  nlockmgr

-   100021   3   udp   1042  nlockmgr

-   100021   4   udp   1042  nlockmgr

-   100021   1   tcp   1629  nlockmgr

-   100021   3   tcp   1629  nlockmgr

-   100021   4   tcp   1629  nlockmgr

-</pre></ul>

-<p>

-  Now your NFS sever is sharing <code>/export</code> directory to be accessed.

-</p>

-

-</body>

-</html>

+<html>
+<head>
+<title>NFS Client How-To</title>
+</head>
+<body background="backgd.gif">
+<hr><hr>
+
+<table width ="100%">
+  <tr align="center" bgcolor="#e4e4e4">
+    <td>
+      <h1><big><font color="#3c34ec"><i>NFS Client How-To</i></font></big></h1>
+      <p>Last Updated: June 18, 2012</p>
+    </td>
+  </tr>
+</table>
+<hr><hr>
+
+<table width ="100%">
+  <tr bgcolor="#e4e4e4">
+    <td>
+      <h1>Table of Contents</h1>
+    </td>
+  </tr>
+</table>
+
+<center><table width ="80%">
+<tr>
+<td>
+<table>
+<tr>
+  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
+  <td>
+    <a href="#nfsconfiguration">Adding NFS to the NuttX Configuration</a>
+  </td>
+</tr>
+</table>
+<table>
+<tr>
+  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
+  <td>
+    <a href="#mountinterface">Mount Interface</a>
+  </td>
+</tr>
+</table>
+<table>
+<tr>
+  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
+  <td>
+    <a href="#nfsmount">NFS Mount Command</a>
+  </td>
+</tr>
+</table>
+<table>
+<tr>
+  <td valign="top" width="22"><img height="20" width="20" src="favicon.ico"></td>
+  <td>
+    <a href="#serverconfig">Configuring the NFS server (Ubuntu)</a>
+  </td>
+</tr>
+</table>
+</td>
+</tr>
+</table></center>
+
+<table width ="100%">
+  <tr bgcolor="#e4e4e4">
+  <td>
+    <a name="nfsconfiguration"><h1>Adding NFS to the NuttX Configuration</h1></a>
+  </td>
+  </tr>
+</table>
+
+<p>
+  The NFS client is easily added to your configuration:
+  You simply need to add <code>CONFIG_NFS</code> to your <code>nuttx/.config</code> file.
+  There are, however, a few dependencies on other system settings:
+</p>
+<ol>
+  <li>
+    First, there are number of things that you must configure in order to be able to use any file system:
+  </li>
+  <ul>
+    <li>
+      <code>CONFIG_NFILE_DESCRIPTORS > 0</code>.  You must include support for file descriptors.
+    </li>
+    <li>
+      <code>CONFIG_DISABLE_MOUNTPOINT=n</code>.  You must include support for mount points in the pseudo-file system.
+    </li>
+  </ul>
+  <li>
+    And there are several dependencies on the networking configuration.
+    At a minimum, you need to have the following selections:
+  </li>
+  <ul>
+    <li>
+      <code>CONFIG_NET=y</code>.  General networking support.
+    </li>
+    <li>
+      <code>CONFIG_NET_UDP=y</code>.  Support for UDP.
+    </li>
+  </ul>
+</ol>
+
+<table width ="100%">
+  <tr bgcolor="#e4e4e4">
+  <td>
+    <a name="mountinterface"><h1>Mount Interface</h1></a>
+  </td>
+  </tr>
+</table>
+
+<p>
+  A low-level, C-callable interface is provided to mount a file system.
+  That interface is called <code>mount()</code> and is mentioned in the <a href="NuttxPortingGuide.html#NxFileSystem"><code>porting guide</code></a> and is prototyped in the header file <code>include/sys/mount.h</code>:
+</p>
+<ul><pre>
+int mount(const char *source, const char *target, const char *filesystemtype, unsigned long mountflags, const void *data);
+</pre></ul>
+<p>
+  <b>Synopsis</b>:
+   <code>mount()</code> attaches the filesystem specified by the <code>source</code> block device name into the root file system at the path specified by <code>target</code>.
+</p>
+<p>
+  <b>Input Paramters</b>:
+  <ul>
+    <li><code>source</code>.  A null-terminated string providing the fill path to a block driver in the NuttX pseudo-file system.
+    <li><code>target</code>.  The location in the NuttX pseudo-file system where the volume will be mounted.
+    <li><code>filesystemtype</code>.  A string identifying the type of file system to use.
+    <li><code>mountflags</code>.  Various flags that can be used to qualify how the file system is mounted.
+    <li><code>data</code>.  Opaque data that is passed to the file system with the mount occurs.
+  </ul>
+</p>
+<p>
+  <b>Returned Values</b>
+  Zero is returned on success; -1 is returned on an error and <code>errno</code> is set appropriately:
+  <ul>
+    <li><code>EACCES</code>.
+      A component of a path was not searchable or mounting a read-onlyfilesystem was attempted without giving the <code>MS_RDONLY</code> flag.
+    </li>
+    <li><code>EBUSY</code>.
+      <code>source</code> is already  mounted.
+    </li>
+    <li><code>EFAULT</code>.
+      One of the pointer arguments points outside the user address space.
+    </li>
+    <li><code>EINVAL</code>.
+      <code>source</code> had an invalid superblock.
+    </li>
+    <li><code>ENODEV</code>.
+      <code>filesystemtype</code> not configured
+    </li>
+    <li><code>ENOENT</code>.
+      A pathname was empty or had a nonexistent component.
+    </li>
+    <li><code>ENOMEM</code>.
+      Could not allocate a memory to copy filenames or data into.
+    </li>
+    <li><code>ENOTBLK</code>.
+      <code>source</code> is not a block device
+    </li>
+ </ul>
+</p>
+<p>
+  This same interface can be used to mount a remote, NFS file system using some special parameters.
+  The NFS mount differs from the <i>normal</i> file system mount in that: (1) there is no block driver for the NFS file system, and (2) special parameters must be passed as <code>data</code> to describe the remote NFS server.
+  Thus the following code snippet might represent how an NFS file system is mounted:
+</p>
+<ul><pre>
+#include &lt;sys/mount.h&gt;
+#include &lt;nuttx/fs/nfs.h&gt;
+
+struct nfs_args data;
+char *mountpoint;
+
+ret = mount(NULL, mountpoint, string &quot;nfs&quot;, 0, (FAR void *)&data);
+</pre></ul>
+<p>
+  NOTE that:  (1) the block driver paramter is <code>NULL</code>.
+  The <code>mount()</code> is smart enough to know that no block driver is needed with the NFS file system.
+  (2) The NFS file system is identified with the simple string &quot;nfs&quot;
+  (3) A reference to <code>struct nfs_args</code> is passed as an NFS-specific argument.
+</p>
+<p>
+  The NFS-specific interface is described in the file <code>include/nuttx/fs/nfs.h</code>.
+  There you can see that <code>struct nfs_args</code> is defined as:
+</p>
+<ul><pre>
+struct nfs_args
+{
+  uint8_t  addrlen;               /* Length of address */
+  uint8_t  sotype;                /* Socket type */
+  uint8_t  flags;                 /* Flags, determines if following are valid: */
+  uint8_t  timeo;                 /* Time value in deciseconds (with NFSMNT_TIMEO) */
+  uint8_t  retrans;               /* Times to retry send (with NFSMNT_RETRANS) */
+  uint16_t wsize;                 /* Write size in bytes (with NFSMNT_WSIZE) */
+  uint16_t rsize;                 /* Read size in bytes (with NFSMNT_RSIZE) */
+  uint16_t readdirsize;           /* readdir size in bytes (with NFSMNT_READDIRSIZE) */
+  char    *path;                  /* Server's path of the directory being mount */
+  struct   sockaddr_storage addr; /* File server address (requires 32-bit alignment) */
+};
+</pre></ul>
+
+<table width ="100%">
+  <tr bgcolor="#e4e4e4">
+  <td>
+    <a name="nfsmount"><h1>NFS Mount Command</h1></a>
+  </td>
+  </tr>
+</table>
+
+<p>
+  The <a href="NuttShell.html">NuttShell (NSH)</a> also supports a command called <code>nfsmount</code>
+  that can be used to mount a remote file system via the NSH command line.
+</p>
+<p>
+  <b>Command Syntax:</b>
+</p>
+<ul><pre>
+nfsmount &lt;server-address&gt; &lt;mount-point&gt; &lt;remote-path&gt;
+</pre></ul>
+<p>
+  <b>Synopsis</b>.
+  The <code>nfsmount</code> command mounts a network file system in the NuttX pseudo filesystem.
+  The <code>nfsmount</code> will use NFSv3 UDP protocol to mount the remote file system.
+</p>
+<p>
+  <b>Command Line Arguments</b>.
+  The <code>nfsmount</code> takes three arguments:
+</p>
+<ol>
+  <li>
+    The <code>&lt;server-address&gt;</code> is the IP address of the server exporting the file system you wish to mount.
+    This implementation of NFS for the NuttX RTOS is only for a local area network, so the server and client must be in the same network.
+  </li>
+  <li>
+    The <code>&lt;mount-point &gt;</code> is the location in the NuttX pseudo filesystem where the mounted volume will appear.
+    This mount point can only reside in the  NuttX pseudo filesystem.
+    By convention, this mount point is a subdirectory under <code>/mnt</code>.
+    The mount command will create whatever  pseudo directories that may be needed to complete the full path (but the full path must not already exist).
+  </li>
+  <li>
+    The <code>&lt;remote-path&gt;</code> is the file system <code>/</code> directory being exported from server.
+    This <code>/</code> directory must have been configured for exportation on the server before when the NFS server was set up.
+  </li>
+</ol>
+
+<p>
+  After the volume has been mounted in the NuttX pseudo filesystem, it may be access in the same way as other objects in the file system.
+</p>
+<p>
+  <b>Example</b>.
+  Suppose the the NFS server has been configured to export the directory <code>/export/shared</code>.
+  The the following command would mount that file system (assuming that the target also has privileges to mount the file system).
+</p>
+<ul><pre>
+NuttShell (NSH)
+nsh&gt; ls /mnt
+/mnt:
+nsh: ls: no such directory: /mnt
+nsh&gt; nfsmount 10.0.0.1 /mnt/nfs /export/shared
+nsh&gt; ls -l /mnt/nfs
+/mnt/nfs:
+ drwxrwxrwx   4096 ..
+ drwxrwxrwx   4096 testdir/
+ -rw-rw-rw-      6 ctest.txt
+ -rw-r--r--     15 btest.txt
+ drwxrwxrwx   4096 .
+nsh&gt; echo &quot;This is a test&quot; &gt;/mnt/nfs/testdir/testfile.txt
+nsh&gt; ls -l /mnt/nfs/testdir
+/mnt/nfs/testdir:
+ -rw-rw-rw-     21 another.txt
+ drwxrwxrwx   4096 ..
+ drwxrwxrwx   4096 .
+ -rw-rw-rw-     16 testfile.txt
+nsh&gt; cat /mnt/nfs/testdir/testfile.txt
+This is a test
+</pre></ul>
+
+<table width ="100%">
+  <tr bgcolor="#e4e4e4">
+  <td>
+    <a name="serverconfig"><h1>Configuring the NFS server (Ubuntu)</h1></a>
+  </td>
+  </tr>
+</table>
+
+<p>
+  Setting up the server will be done in two steps:
+  First, setting up the configuration file for NFS, and then starting the NFS services.
+  But first, you need to install the nfs server on Ubuntu with the these two commands:
+</p>
+<ul><pre>
+# sudo apt-get install nfs-common</FONT>
+# sudo apt-get install nfs-kernel-server</FONT>
+</pre></ul>
+
+<p>
+  After that, we need to make or choose the directory we want to export from the NFS server.
+  In our case, we are going to make a new directory called <code>/export</code>.
+</p>
+<ul><pre>
+# sudo mkdir /export
+</pre></ul>
+<p>
+  It is important that <code>/export</code> directory allow access to everyone (777 permissions) as we will be accessing the NFS share from the client with no authentication. 
+</p>
+<ul><pre>
+# sudo chmod 777 /export
+</pre></ul>
+<p>
+  When all this is done, we will need to edit the configuration file to set up an NFS server: <code>/etc/exports</code>.
+  This file contains a list of entries;
+  each entry indicates a volume that is shared and how it is shared.
+  For more information for a complete description of all the setup options for this file you can check in the man pages (<code>man export</code>).</p>
+  An entry in <code>/etc/exports</code> will typically look like this:
+</p>
+<ul><pre>
+directory machine1(option11,option12)
+</pre></ul>
+<p>
+  So for our example we export <coce>/export</code> to the client 10.0.0.2 add the entry:
+</p>
+<ul><pre>
+/export 10.0.0.2(rw)
+</pre></ul>
+<p>
+  In our case we are using all the default options except for the <code>ro</code> that we replaced with <code>rw</code>  so that our client will have read and write access to the directory that we are exporting.
+</p>
+</p>
+  After we do all the require configurations, we are ready to start the server with the next command: 
+</p>
+<ul><pre>
+# sudo /etc/init.d/nfs-kernel-server start
+</pre></ul>
+</p>
+  Note: If you later decide to add more NFS exports to the /etc/exports file, you will need to either restart NFS daemon
+or run command exportfs.
+</p>
+<ul><pre>
+# sudo /etc/init.d/nfs-kernel-server start 
+</pre></ul>
+<p>Or</p>
+<ul><pre>
+# exportfs -ra
+</pre></ul>
+<p>
+  Now we can check if the export directory and our mount point is properly set up.
+</p>
+<ul><pre>
+# sudo showmount -e
+# sudo showmount -a
+</pre></ul>
+<p>
+  And also we can verify if NFS is running in the system with:
+</p>
+<P STYLE="margin-left: 0.49in; margin-bottom: 0in; line-height: 100%">
+<ul><pre>
+# rpcinfo &ndash;p</FONT>
+program vers proto   port
+   100000   2   tcp    111  portmapper
+   100000   2   udp    111  portmapper
+   100011   1   udp   749  rquotad
+   100011   2   udp   749  rquotad
+   100005   1   udp    759  mountd
+   100005   1   tcp    761  mountd
+   100005   2   udp    764  mountd
+   100005   2   tcp    766  mountd
+   100005   3   udp    769  mountd
+   100005   3   tcp    771  mountd
+   100003   2   udp   2049  nfs
+   100003   3   udp   2049  nfs
+   300019   1   tcp    830  amd
+   300019   1   udp    831  amd
+   100024   1   udp    944  status
+   100024   1   tcp    946  status
+   100021   1   udp   1042  nlockmgr
+   100021   3   udp   1042  nlockmgr
+   100021   4   udp   1042  nlockmgr
+   100021   1   tcp   1629  nlockmgr
+   100021   3   tcp   1629  nlockmgr
+   100021   4   tcp   1629  nlockmgr
+</pre></ul>
+<p>
+  Now your NFS sever is sharing <code>/export</code> directory to be accessed.
+</p>
+
+</body>
+</html>
diff --git a/nuttx/Documentation/NuttShell.html b/nuttx/Documentation/NuttShell.html
index 8e57e27b22..0413a46956 100644
--- a/nuttx/Documentation/NuttShell.html
+++ b/nuttx/Documentation/NuttShell.html
@@ -1400,7 +1400,7 @@ mkfifo &lt;path&gt;
 <p>
   <b>Synopsis</b>.
   Creates a FIFO character device anywhere in the pseudo file system, creating
-  whatever psuedo directories that may be needed to complete the <code>&lt;path&gt;</code>.
+  whatever pseudo directories that may be needed to complete the <code>&lt;path&gt;</code>.
   By convention, however, device drivers are place in the standard <code>/dev</code> directory.
   After it is created, the FIFO device may be used as any other device driver.
   NSH provides this command to access the <a href="NuttxUserGuide.html#mkfifo"><code>mkfifo()</code></a> NuttX API.
@@ -1492,7 +1492,7 @@ mount -t &lt;fstype&gt; &lt;block-device&gt; <code>&lt;dir-path&gt;</code>
   If no paramters are provided on the command line after the <code>mount</code> command, then the <code>mount</code> command will enumerate all of the current mountpoints on the console.
 </p>
 <p>
-  If the mount parameters are provied on the command after the <code>mount</code> command, then the <code>mount</code> command will mount a file system in the NuttX psuedo-file system.
+  If the mount parameters are provied on the command after the <code>mount</code> command, then the <code>mount</code> command will mount a file system in the NuttX pseudo-file system.
   <code>mount</code>' performs a three way association, binding:
 </p>
 <ol>
@@ -1513,7 +1513,7 @@ mount -t &lt;fstype&gt; &lt;block-device&gt; <code>&lt;dir-path&gt;</code>
     <a href="NuttxUserGuide.html#FileSystemOverview"><i>pseudo</i> filesystem</a> where the mounted volume will appear.
     This mount point can only reside in the NuttX <a href="NuttxUserGuide.html#FileSystemOverview"><i>pseudo</i> filesystem</a>.
     By convention, this mount point is a subdirectory under <code>/mnt</code>.
-    The mount command will create whatever psuedo directories that may be needed to complete the
+    The mount command will create whatever pseudo directories that may be needed to complete the
     full path but the full path must not already exist.
   </li>
 </ol>
diff --git a/nuttx/TODO b/nuttx/TODO
index a4bad193ec..e2abce7f40 100644
--- a/nuttx/TODO
+++ b/nuttx/TODO
@@ -703,9 +703,9 @@ o File system / Generic drivers (fs/, drivers/)
 
   Title:       REMOVING PIPES AND FIFOS
   Description: There is no way to remove a FIFO or PIPE created in the
-               psuedo filesystem.  Once created, they persist indefinitely
+               pseudo filesystem.  Once created, they persist indefinitely
                and cannot be unlinked.  This is actually a more generic
-               issue:  unlink does not work for anything in the psuedo-
+               issue:  unlink does not work for anything in the pseudo-
                filesystem.
   Status:      Open, but partially resolved: pipe buffer is at least freed
                when there are not open references to the pipe/FIFO.
diff --git a/nuttx/configs/lincoln60/README.txt b/nuttx/configs/lincoln60/README.txt
index 7a06a852bb..6ad37d363c 100644
--- a/nuttx/configs/lincoln60/README.txt
+++ b/nuttx/configs/lincoln60/README.txt
@@ -413,7 +413,7 @@ host operations.  To make these modifications, do the following:
 
 When this change is made, NSH should be extended to support USB flash
 devices.  When a FLASH device is inserted, you should see a device
-appear in the /dev (psuedo) directory.  The device name should be
+appear in the /dev (pseudo) directory.  The device name should be
 like /dev/sda, /dev/sdb, etc.  The USB mass storage device, is present
 it can be mounted from the NSH command line like:
 
diff --git a/nuttx/configs/lpc4330-xplorer/README.txt b/nuttx/configs/lpc4330-xplorer/README.txt
index a5c0709ea4..4ebe89d9ed 100644
--- a/nuttx/configs/lpc4330-xplorer/README.txt
+++ b/nuttx/configs/lpc4330-xplorer/README.txt
@@ -829,7 +829,7 @@ host operations.  To make these modifications, do the following:
 
 When this change is made, NSH should be extended to support USB flash
 devices.  When a FLASH device is inserted, you should see a device
-appear in the /dev (psuedo) directory.  The device name should be
+appear in the /dev (pseudo) directory.  The device name should be
 like /dev/sda, /dev/sdb, etc.  The USB mass storage device, is present
 it can be mounted from the NSH command line like:
 
diff --git a/nuttx/configs/mbed/README.txt b/nuttx/configs/mbed/README.txt
index 3366ed320e..0b98d90853 100755
--- a/nuttx/configs/mbed/README.txt
+++ b/nuttx/configs/mbed/README.txt
@@ -384,7 +384,7 @@ host operations.  To make these modifications, do the following:
 
 When this change is made, NSH should be extended to support USB flash
 devices.  When a FLASH device is inserted, you should see a device
-appear in the /dev (psuedo) directory.  The device name should be
+appear in the /dev (pseudo) directory.  The device name should be
 like /dev/sda, /dev/sdb, etc.  The USB mass storage device, is present
 it can be mounted from the NSH command line like:
 
diff --git a/nuttx/configs/olimex-lpc1766stk/README.txt b/nuttx/configs/olimex-lpc1766stk/README.txt
index b2a1ad5fa2..b81826e301 100755
--- a/nuttx/configs/olimex-lpc1766stk/README.txt
+++ b/nuttx/configs/olimex-lpc1766stk/README.txt
@@ -788,7 +788,7 @@ USB host operations.  To make these modifications, do the following:
 
 When this change is made, NSH should be extended to support USB flash
 devices.  When a FLASH device is inserted, you should see a device
-appear in the /dev (psuedo) directory.  The device name should be
+appear in the /dev (pseudo) directory.  The device name should be
 like /dev/sda, /dev/sdb, etc.  The USB mass storage device, is present
 it can be mounted from the NSH command line like:
 
diff --git a/nuttx/fs/fs_closedir.c b/nuttx/fs/fs_closedir.c
index fe09944787..ba4f129618 100644
--- a/nuttx/fs/fs_closedir.c
+++ b/nuttx/fs/fs_closedir.c
@@ -96,7 +96,7 @@ int closedir(FAR DIR *dirp)
    */
 
 #ifndef CONFIG_DISABLE_MOUNTPOINT
-  if (INODE_IS_MOUNTPT(inode) && !DIRENT_ISPSUEDONODE(idir->fd_flags))
+  if (INODE_IS_MOUNTPT(inode) && !DIRENT_ISPSEUDONODE(idir->fd_flags))
     {
       /* The node is a file system mointpoint. Verify that the mountpoint
        * supports the closedir() method (not an error if it does not)
@@ -117,13 +117,13 @@ int closedir(FAR DIR *dirp)
   else
 #endif
     {
-      /* The node is part of the root psuedo file system, release
+      /* The node is part of the root pseudo file system, release
        * our contained reference to the 'next' inode.
        */
 
-      if (idir->u.psuedo.fd_next)
+      if (idir->u.pseudo.fd_next)
         {
-          inode_release(idir->u.psuedo.fd_next);
+          inode_release(idir->u.pseudo.fd_next);
         }
     }
 
diff --git a/nuttx/fs/fs_files.c b/nuttx/fs/fs_files.c
index 033cd8c63b..425e7c73f8 100644
--- a/nuttx/fs/fs_files.c
+++ b/nuttx/fs/fs_files.c
@@ -342,7 +342,7 @@ int files_dup(FAR struct file *filep1, FAR struct file *filep2)
 #endif
 #endif
         {
-          /* Open the psuedo file or device driver */
+          /* Open the pseudo file or device driver */
 
           ret = inode->u.i_ops->open(filep2);
         }
diff --git a/nuttx/fs/fs_foreachinode.c b/nuttx/fs/fs_foreachinode.c
index 08630263b2..c5874c669b 100644
--- a/nuttx/fs/fs_foreachinode.c
+++ b/nuttx/fs/fs_foreachinode.c
@@ -171,7 +171,7 @@ int foreach_inodelevel(FAR struct inode *node, struct inode_path_s *info)
  *   when the callback 'handler' returns a non-zero value, or when all of
  *   the inodes have been visited.
  *
- *   NOTE 1: Use with caution... The psuedo-file system is locked throughout
+ *   NOTE 1: Use with caution... The pseudo-file system is locked throughout
  *   the traversal.
  *   NOTE 2: The search algorithm is recursive and could, in principle, use
  *   an indeterminant amount of stack space.  This will not usually be a
diff --git a/nuttx/fs/fs_foreachmountpoint.c b/nuttx/fs/fs_foreachmountpoint.c
index e7a6206506..74e3e8356a 100644
--- a/nuttx/fs/fs_foreachmountpoint.c
+++ b/nuttx/fs/fs_foreachmountpoint.c
@@ -154,7 +154,7 @@ static int mountpoint_filter(FAR struct inode *node,
  *   mountpoint inodes.  It is intended to support the mount() command to
  *   when the mount command is used to enumerate mounts.
  *
- *   NOTE 1: Use with caution... The psuedo-file system is locked throughout
+ *   NOTE 1: Use with caution... The pseudo-file system is locked throughout
  *   the traversal.
  *   NOTE 2: The search algorithm is recursive and could, in principle, use
  *   an indeterminant amount of stack space.  This will not usually be a
diff --git a/nuttx/fs/fs_internal.h b/nuttx/fs/fs_internal.h
index dbabb63d1b..786c683dcb 100644
--- a/nuttx/fs/fs_internal.h
+++ b/nuttx/fs/fs_internal.h
@@ -75,10 +75,10 @@
 
 /* Mountpoint fd_flags values */
 
-#define DIRENTFLAGS_PSUEDONODE 1
+#define DIRENTFLAGS_PSEUDONODE 1
 
-#define DIRENT_SETPSUEDONODE(f) do (f) |= DIRENTFLAGS_PSUEDONODE; while (0)
-#define DIRENT_ISPSUEDONODE(f) (((f) & DIRENTFLAGS_PSUEDONODE) != 0)
+#define DIRENT_SETPSEUDONODE(f) do (f) |= DIRENTFLAGS_PSEUDONODE; while (0)
+#define DIRENT_ISPSEUDONODE(f) (((f) & DIRENTFLAGS_PSEUDONODE) != 0)
 
 /****************************************************************************
  * Public Types
@@ -236,7 +236,7 @@ EXTERN void inode_release(FAR struct inode *inode);
  *   when the callback 'handler' returns a non-zero value, or when all of
  *   the inodes have been visited.
  *
- *   NOTE 1: Use with caution... The psuedo-file system is locked throughout
+ *   NOTE 1: Use with caution... The pseudo-file system is locked throughout
  *   the traversal.
  *   NOTE 2: The search algorithm is recursive and could, in principle, use
  *   an indeterminant amount of stack space.  This will not usually be a
diff --git a/nuttx/fs/fs_opendir.c b/nuttx/fs/fs_opendir.c
index a52c538fe2..1c87c984dd 100644
--- a/nuttx/fs/fs_opendir.c
+++ b/nuttx/fs/fs_opendir.c
@@ -138,19 +138,19 @@ static inline int open_mountpoint(FAR struct inode *inode,
 
 static void open_pseudodir(FAR struct inode *inode, FAR struct fs_dirent_s *dir)
 {
-  /* We have a valid psuedo-filesystem node.  Take two references on the
+  /* We have a valid pseudo-filesystem node.  Take two references on the
    * inode -- one for the parent (fd_root) and one for the child (fd_next).
    * Note that we do not call inode_addref because we are holding the tree
    * semaphore and that would result in deadlock.
    */
 
   inode->i_crefs += 2;
-  dir->u.psuedo.fd_next = inode; /* This is the next node to use for readdir() */
+  dir->u.pseudo.fd_next = inode; /* This is the next node to use for readdir() */
 
-  /* Flag the inode as belonging to the psuedo-filesystem */
+  /* Flag the inode as belonging to the pseudo-filesystem */
 
 #ifndef CONFIG_DISABLE_MOUNTPOINT
-  DIRENT_SETPSUEDONODE(dir->fd_flags);
+  DIRENT_SETPSEUDONODE(dir->fd_flags);
 #endif
 }
 
@@ -242,7 +242,7 @@ FAR DIR *opendir(FAR const char *path)
     }
 
   /* Populate the DIR structure and return it to the caller.  The way that
-   * we do this depends on whenever this is a "normal" psuedo-file-system
+   * we do this depends on whenever this is a "normal" pseudo-file-system
    * inode or a file system mountpoint.
    */
 
@@ -262,7 +262,7 @@ FAR DIR *opendir(FAR const char *path)
       open_pseudodir(inode, dir);
     }
 
-  /* Is this a node in the psuedo filesystem? Or a mountpoint?  If the node
+  /* Is this a node in the pseudo filesystem? Or a mountpoint?  If the node
    * is the root (bisroot == TRUE), then this is a special case.
    */
 
@@ -280,7 +280,7 @@ FAR DIR *opendir(FAR const char *path)
 #endif
   else
     {
-      /* The node is part of the root psuedo file system.  Does the inode have a child?
+      /* The node is part of the root pseudo file system.  Does the inode have a child?
        * If so that the child would be the 'root' of a list of nodes under
        * the directory.
        */
@@ -292,7 +292,7 @@ FAR DIR *opendir(FAR const char *path)
           goto errout_with_direntry;
         }
 
-      /* It looks we have a valid psuedo-filesystem directory node. */
+      /* It looks we have a valid pseudo-filesystem directory node. */
 
       open_pseudodir(inode, dir);
     }
diff --git a/nuttx/fs/fs_readdir.c b/nuttx/fs/fs_readdir.c
index 8df1bf655d..f5b2663927 100644
--- a/nuttx/fs/fs_readdir.c
+++ b/nuttx/fs/fs_readdir.c
@@ -53,16 +53,16 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Name: readpsuedodir
+ * Name: readpseudodir
  ****************************************************************************/
 
-static inline int readpsuedodir(struct fs_dirent_s *idir)
+static inline int readpseudodir(struct fs_dirent_s *idir)
 {
   FAR struct inode *prev;
 
   /* Check if we are at the end of the list */
 
-  if (!idir->u.psuedo.fd_next)
+  if (!idir->u.pseudo.fd_next)
     {
       /* End of file and error conditions are not distinguishable
        * with readdir.  Here we return -ENOENT to signal the end
@@ -74,21 +74,21 @@ static inline int readpsuedodir(struct fs_dirent_s *idir)
 
   /* Copy the inode name into the dirent structure */
 
-  strncpy(idir->fd_dir.d_name, idir->u.psuedo.fd_next->i_name, NAME_MAX+1);
+  strncpy(idir->fd_dir.d_name, idir->u.pseudo.fd_next->i_name, NAME_MAX+1);
 
   /* If the node has file operations, we will say that it is
    * a file.
    */
 
   idir->fd_dir.d_type = 0;
-  if (idir->u.psuedo.fd_next->u.i_ops)
+  if (idir->u.pseudo.fd_next->u.i_ops)
     {
 #ifndef CONFIG_DISABLE_MOUNTPOINT
-      if (INODE_IS_BLOCK(idir->u.psuedo.fd_next)) 
+      if (INODE_IS_BLOCK(idir->u.pseudo.fd_next)) 
         {
            idir->fd_dir.d_type |= DTYPE_BLK;
         }
-      if (INODE_IS_MOUNTPT(idir->u.psuedo.fd_next)) 
+      if (INODE_IS_MOUNTPT(idir->u.pseudo.fd_next)) 
         {
            idir->fd_dir.d_type |= DTYPE_DIRECTORY;
         }
@@ -103,7 +103,7 @@ static inline int readpsuedodir(struct fs_dirent_s *idir)
    * is a directory.  NOTE: that the node can be both!
    */
 
-  if (idir->u.psuedo.fd_next->i_child || !idir->u.psuedo.fd_next->u.i_ops)
+  if (idir->u.pseudo.fd_next->i_child || !idir->u.pseudo.fd_next->u.i_ops)
     {
       idir->fd_dir.d_type |= DTYPE_DIRECTORY;
     }
@@ -112,14 +112,14 @@ static inline int readpsuedodir(struct fs_dirent_s *idir)
 
   inode_semtake();
 
-  prev                   = idir->u.psuedo.fd_next;
-  idir->u.psuedo.fd_next = prev->i_peer; /* The next node to visit */
+  prev                   = idir->u.pseudo.fd_next;
+  idir->u.pseudo.fd_next = prev->i_peer; /* The next node to visit */
 
-  if (idir->u.psuedo.fd_next)
+  if (idir->u.pseudo.fd_next)
     {
       /* Increment the reference count on this next node */
 
-      idir->u.psuedo.fd_next->i_crefs++;
+      idir->u.pseudo.fd_next->i_crefs++;
     }
 
   inode_semgive();
@@ -179,7 +179,7 @@ FAR struct dirent *readdir(DIR *dirp)
 
 #ifndef CONFIG_DISABLE_MOUNTPOINT
   inode = idir->fd_root;
-  if (INODE_IS_MOUNTPT(inode) && !DIRENT_ISPSUEDONODE(idir->fd_flags))
+  if (INODE_IS_MOUNTPT(inode) && !DIRENT_ISPSEUDONODE(idir->fd_flags))
     {
       /* The node is a file system mointpoint. Verify that the mountpoint
        * supports the readdir() method
@@ -198,9 +198,9 @@ FAR struct dirent *readdir(DIR *dirp)
   else
 #endif
     {
-      /* The node is part of the root psuedo file system */
+      /* The node is part of the root pseudo file system */
 
-      ret = readpsuedodir(idir);
+      ret = readpseudodir(idir);
     }
 
   /* ret < 0 is an error.  Special case: ret = -ENOENT is end of file */
diff --git a/nuttx/fs/fs_rewinddir.c b/nuttx/fs/fs_rewinddir.c
index a0e2be7d88..c22c15f181 100644
--- a/nuttx/fs/fs_rewinddir.c
+++ b/nuttx/fs/fs_rewinddir.c
@@ -52,10 +52,10 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Name: rewindpsuedodir
+ * Name: rewindpseudodir
  ****************************************************************************/
 
-static inline void rewindpsuedodir(struct fs_dirent_s *idir)
+static inline void rewindpseudodir(struct fs_dirent_s *idir)
 {
   struct inode *prev;
 
@@ -63,8 +63,8 @@ static inline void rewindpsuedodir(struct fs_dirent_s *idir)
 
   /* Reset the position to the beginning */
 
-  prev                   = idir->u.psuedo.fd_next; /* (Save to delete later) */
-  idir->u.psuedo.fd_next = idir->fd_root;          /* The next node to visit */
+  prev                   = idir->u.pseudo.fd_next; /* (Save to delete later) */
+  idir->u.pseudo.fd_next = idir->fd_root;          /* The next node to visit */
   idir->fd_position      = 0;                      /* Reset position */
 
   /* Increment the reference count on the root=next node.  We
@@ -138,8 +138,8 @@ void rewinddir(FAR DIR *dirp)
   else
 #endif
     {
-      /* The node is part of the root psuedo file system */
+      /* The node is part of the root pseudo file system */
 
-      rewindpsuedodir(idir);
+      rewindpseudodir(idir);
     }
 }
diff --git a/nuttx/fs/fs_seekdir.c b/nuttx/fs/fs_seekdir.c
index ec530c67d0..781d35f27e 100644
--- a/nuttx/fs/fs_seekdir.c
+++ b/nuttx/fs/fs_seekdir.c
@@ -53,10 +53,10 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Name: seekpsuedodir
+ * Name: seekpseudodir
  ****************************************************************************/
 
-static inline void seekpsuedodir(struct fs_dirent_s *idir, off_t offset)
+static inline void seekpseudodir(struct fs_dirent_s *idir, off_t offset)
 {
   struct inode *curr;
   struct inode *prev;
@@ -76,7 +76,7 @@ static inline void seekpsuedodir(struct fs_dirent_s *idir, off_t offset)
   else
     {
       pos  = idir->fd_position;
-      curr = idir->u.psuedo.fd_next;
+      curr = idir->u.pseudo.fd_next;
     }
 
   /* Traverse the peer list starting at the 'root' of the
@@ -90,8 +90,8 @@ static inline void seekpsuedodir(struct fs_dirent_s *idir, off_t offset)
 
   /* Now get the inode to vist next time that readdir() is called */
 
-  prev                   = idir->u.psuedo.fd_next;
-  idir->u.psuedo.fd_next = curr; /* The next node to visit (might be null) */
+  prev                   = idir->u.pseudo.fd_next;
+  idir->u.pseudo.fd_next = curr; /* The next node to visit (might be null) */
   idir->fd_position      = pos;  /* Might be beyond the last dirent */
 
   if (curr)
@@ -223,8 +223,8 @@ void seekdir(FAR DIR *dirp, off_t offset)
   else
 #endif
     {
-      /* The node is part of the root psuedo file system */
+      /* The node is part of the root pseudo file system */
 
-      seekpsuedodir(idir, offset);
+      seekpseudodir(idir, offset);
     }
 }
diff --git a/nuttx/fs/fs_stat.c b/nuttx/fs/fs_stat.c
index 5cb3420818..cf27e87a6c 100644
--- a/nuttx/fs/fs_stat.c
+++ b/nuttx/fs/fs_stat.c
@@ -51,10 +51,10 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Name: statpsuedo
+ * Name: statpseudo
  ****************************************************************************/
 
-static inline int statpsuedo(FAR struct inode *inode, FAR struct stat *buf)
+static inline int statpseudo(FAR struct inode *inode, FAR struct stat *buf)
 {
   /* Most of the stat entries just do not apply */
 
@@ -92,7 +92,7 @@ static inline int statpsuedo(FAR struct inode *inode, FAR struct stat *buf)
     {
       /* If it has no operations, then it must just be a intermediate
        * node in the inode tree.  It is something like a directory.
-       * We'll say that all psuedo-directories are read-able but not
+       * We'll say that all pseudo-directories are read-able but not
        * write-able.
        */
 
@@ -195,9 +195,9 @@ int stat(const char *path, FAR struct stat *buf)
   else
 #endif
     {
-      /* The node is part of the root psuedo file system */
+      /* The node is part of the root pseudo file system */
 
-      ret = statpsuedo(inode, buf);
+      ret = statpseudo(inode, buf);
     }
 
   /* Check if the stat operation was successful */
diff --git a/nuttx/fs/fs_statfs.c b/nuttx/fs/fs_statfs.c
index 540eb86bb3..df7321bbd7 100644
--- a/nuttx/fs/fs_statfs.c
+++ b/nuttx/fs/fs_statfs.c
@@ -52,10 +52,10 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Name: statpsuedo
+ * Name: statpseudo
  ****************************************************************************/
 
-static inline int statpsuedofs(FAR struct inode *inode, FAR struct statfs *buf)
+static inline int statpseudofs(FAR struct inode *inode, FAR struct statfs *buf)
 {
   memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = PROC_SUPER_MAGIC;
@@ -137,9 +137,9 @@ int statfs(FAR const char *path, FAR struct statfs *buf)
   else
 #endif
     {
-      /* The node is part of the root psuedo file system */
+      /* The node is part of the root pseudo file system */
 
-      ret = statpsuedofs(inode, buf);
+      ret = statpseudofs(inode, buf);
     }
 
   /* Check if the statfs operation was successful */
diff --git a/nuttx/fs/fs_syslog.c b/nuttx/fs/fs_syslog.c
index 1fe8c03a1c..1d569082a3 100644
--- a/nuttx/fs/fs_syslog.c
+++ b/nuttx/fs/fs_syslog.c
@@ -319,7 +319,7 @@ int syslog_initialize(void)
                                       SYSLOG_OFLAGS, 0666);
         }
 
-      /* No... then it must be a character driver in the NuttX psuedo-
+      /* No... then it must be a character driver in the NuttX pseudo-
        * file system.
        */
 
diff --git a/nuttx/fs/fs_unregisterblockdriver.c b/nuttx/fs/fs_unregisterblockdriver.c
index 4ee9016fce..4d169fddfa 100644
--- a/nuttx/fs/fs_unregisterblockdriver.c
+++ b/nuttx/fs/fs_unregisterblockdriver.c
@@ -71,7 +71,7 @@
  * Name: unregister_blockdriver
  *
  * Description:
- *   Remove the block driver inode at 'path' from the psuedo-file system
+ *   Remove the block driver inode at 'path' from the pseudo-file system
  *
  ****************************************************************************/
 
diff --git a/nuttx/fs/fs_unregisterdriver.c b/nuttx/fs/fs_unregisterdriver.c
index 7537274b54..c9ac0b6192 100644
--- a/nuttx/fs/fs_unregisterdriver.c
+++ b/nuttx/fs/fs_unregisterdriver.c
@@ -71,7 +71,7 @@
  * Name: unregister_driver
  *
  * Description:
- *   Remove the character driver inode at 'path' from the psuedo-file system
+ *   Remove the character driver inode at 'path' from the pseudo-file system
  *
  ****************************************************************************/
 
diff --git a/nuttx/include/nuttx/fs/dirent.h b/nuttx/include/nuttx/fs/dirent.h
index 8aad4242b8..75867c87ae 100644
--- a/nuttx/include/nuttx/fs/dirent.h
+++ b/nuttx/include/nuttx/fs/dirent.h
@@ -65,12 +65,12 @@
  * reference, a position, a dirent structure, and file-system-specific
  * information.
  *
- * For the root psuedo-file system, we need retain only the 'next' inode
+ * For the root pseudo-file system, we need retain only the 'next' inode
  * need for the next readdir() operation.  We hold a reference on this
  * inode so we know that it will persist until closedir is called.
  */
 
-struct fs_psuedodir_s
+struct fs_pseudodir_s
 {
   struct inode *fd_next;             /* The inode for the next call to readdir() */
 };
@@ -140,7 +140,7 @@ struct fs_dirent_s
 {
   /* This is the node that was opened by opendir.  The type of the inode
    * determines the way that the readdir() operations are performed. For the
-   * psuedo root psuedo-file system, it is also used to support rewind.
+   * pseudo root pseudo-file system, it is also used to support rewind.
    *
    * We hold a reference on this inode so we know that it will persist until
    * closedir() is called (although inodes linked to this inode may change).
@@ -166,9 +166,9 @@ struct fs_dirent_s
 
   union
     {
-      /* Private data used by the built-in psuedo-file system */
+      /* Private data used by the built-in pseudo-file system */
 
-      struct fs_psuedodir_s psuedo;
+      struct fs_pseudodir_s pseudo;
 
       /* Private data used by other file systems */
 
diff --git a/nuttx/include/nuttx/fs/fs.h b/nuttx/include/nuttx/fs/fs.h
index 07d28597e8..81f81622f6 100644
--- a/nuttx/include/nuttx/fs/fs.h
+++ b/nuttx/include/nuttx/fs/fs.h
@@ -199,7 +199,7 @@ union inode_ops_u
 #endif
 };
 
-/* This structure represents one inode in the Nuttx psuedo-file system */
+/* This structure represents one inode in the Nuttx pseudo-file system */
 
 struct inode
 {
@@ -342,7 +342,7 @@ EXTERN void weak_function fs_initialize(void);
  *   mountpoint inodes.  It is intended to support the mount() command to
  *   when the mount command is used to enumerate mounts.
  *
- *   NOTE 1: Use with caution... The psuedo-file system is locked throughout
+ *   NOTE 1: Use with caution... The pseudo-file system is locked throughout
  *   the traversal.
  *   NOTE 2: The search algorithm is recursive and could, in principle, use
  *   an indeterminant amount of stack space.  This will not usually be a
@@ -415,7 +415,7 @@ EXTERN int register_blockdriver(const char *path,
  * Name: unregister_driver
  *
  * Description:
- *   Remove the character driver inode at 'path' from the psuedo-file system
+ *   Remove the character driver inode at 'path' from the pseudo-file system
  *
  ****************************************************************************/
 
@@ -426,7 +426,7 @@ EXTERN int unregister_driver(const char *path);
  * Name: unregister_blockdriver
  *
  * Description:
- *   Remove the block driver inode at 'path' from the psuedo-file system
+ *   Remove the block driver inode at 'path' from the pseudo-file system
  *
  ****************************************************************************/