bafd2949c3
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3405 42af7a65-404d-4744-a932-0658087f49c3
144 lines
4.6 KiB
C
144 lines
4.6 KiB
C
/****************************************************************************
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* examples/pashello/pashello.c
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*
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* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <debug.h>
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#include "pexec.h"
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#include "pedefs.h"
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#include "pashello.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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#ifndef CONFIG_PASHELLO_VARSTACKSIZE
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# define CONFIG_PASHELLO_VARSTACKSIZE 1024
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#endif
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#ifndef CONFIG_PASHELLO_STRSTACKSIZE
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# define CONFIG_PASHELLO_STRSTACKSIZE 128
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: prun
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*
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* Description:
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* This function executes the P-Code program until a stopping condition
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* is encountered.
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*
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****************************************************************************/
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static void prun(FAR struct pexec_s *st)
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{
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int errcode;
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for (;;)
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{
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/* Execute the instruction; Check for exceptional conditions */
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errcode = pexec(st);
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if (errcode != eNOERROR) break;
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}
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if (errcode != eEXIT)
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{
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printf("Runtime error 0x%02x -- Execution Stopped\n", errcode);
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}
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* user_initialize
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****************************************************************************/
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#ifndef CONFIG_HAVE_WEAKFUNCTIONS
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void user_initialize(void)
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{
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}
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#endif
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/****************************************************************************
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* user_start
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****************************************************************************/
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int user_start(int argc, FAR char *argv[])
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{
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FAR struct pexec_s *st;
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/* Register the /dev/hello driver */
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hello_register();
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/* Load the POFF file */
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st = pload("/dev/hello", CONFIG_PASHELLO_VARSTACKSIZE, CONFIG_PASHELLO_STRSTACKSIZE);
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if (!st)
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{
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fprintf(stderr, "user_start: ERROR: Could not load /dev/hello\n");
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exit(1);
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}
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printf("user_start: /dev/hello Loaded\n");
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printf("user_start: Interpreter started:\n");
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/* And start program execution */
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prun(st);
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/* Clean up resources used by the interpreter */
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printf("user_start: Interpreter terminated");
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pexec_release(st);
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return 0;
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}
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