119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
/****************************************************************************
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* apps/system/prun/prun.c
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*
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 <errno.h>
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#include <debug.h>
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#include "system/prun.h"
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#include "pexec.h"
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#include "pedefs.h"
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#include "prun.h"
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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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* Execute/interpret a P-Code file. This function does not return until
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* the P-code program terminates or until a fatal error occurs.
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*
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* Input Parameters:
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* exepath - The full path to the P-Code binary.
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* varsize - Size of the P-Code variable stack
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* strsize - the size of the P-Code string stack.
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*
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* Returned Value:
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* OK if the P-Code program successfully terminated; A negated errno value
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* is returned on the event of any failure.
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*
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****************************************************************************/
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int prun(FAR char *exepath, size_t varsize, size_t strsize)
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{
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FAR struct pexec_s *st;
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int errcode;
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int ret = OK;
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/* Load the POFF file into memory */
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st = pload(exepath, varsize, varsize);
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if (!st)
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{
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berr("ERROR: Could not load %s\n", exepath);
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return -ENOEXEC;
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}
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binfo("Loaded %s\n", exepath);
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/* Execute the P-Code program until a stopping condition occurs */
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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)
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{
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break;
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}
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}
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if (errcode != eEXIT)
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{
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/* REVISIT: Select a more appropriated return errocode */
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berr("ERROR: Runtime error 0x%02x -- Execution Stopped\n", errcode);
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ret = -ENOEXEC;
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}
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/* Clean up resources used by the interpreter */
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binfo("Execution terminated\n");
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pexec_release(st);
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return ret;
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}
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