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Diffstat (limited to 'apps/interpreters/prun/prun.c')
-rw-r--r-- | apps/interpreters/prun/prun.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/apps/interpreters/prun/prun.c b/apps/interpreters/prun/prun.c new file mode 100644 index 000000000..23235074e --- /dev/null +++ b/apps/interpreters/prun/prun.c @@ -0,0 +1,130 @@ +/**************************************************************************** + * apps/system/prun/prun.c + * + * Copyright (C) 2014 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <debug.h> + +#include <apps/interpreters/prun.h> + +#include "pexec.h" +#include "pedefs.h" +#include "prun.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: prun + * + * Description: + * Execute/interpret a P-Code file. This function does not return until + * the P-code program terminates or until a fatal error occurs. + * + * Input Parameters: + * exepath - The full path to the P-Code binary. + * varsize - Size of the P-Code variable stack + * strsize - the size of the P-Code string stack. + * + * Returned Value: + * OK if the P-Code program successfully terminated; A negated errno value + * is returned on the event of any failure. + * + ****************************************************************************/ + +int prun(FAR char *exepath, size_t varsize, size_t strsize) +{ + FAR struct pexec_s *st; + int errcode; + int ret = OK; + + /* Load the POFF file into memory */ + + st = pload(exepath, varsize, varsize); + if (!st) + { + bdbg("ERROR: Could not load %s\n", exepath); + return -ENOEXEC; + } + + bvdbg("Loaded %s\n", exepath); + + /* Execute the P-Code program until a stopping condition occurs */ + + for (;;) + { + /* Execute the instruction; Check for exceptional conditions */ + + errcode = pexec(st); + if (errcode != eNOERROR) + { + break; + } + } + + if (errcode != eEXIT) + { + /* REVISIT: Select a more appropriated return errocode */ + + bdbg("ERROR: Runtime error 0x%02x -- Execution Stopped\n", errcode); + ret = -ENOEXEC; + } + + /* Clean up resources used by the interpreter */ + + bvdbg("Execution terminated\n"); + pexec_release(st); + return ret; +} |