forked from Archive/PX4-Autopilot
139 lines
4.7 KiB
C
139 lines
4.7 KiB
C
/****************************************************************************
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* binfmt/binfmt_loadmodule.c
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*
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* Copyright (C) 2009 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 <sched.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/binfmt.h>
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#include "binfmt_internal.h"
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#ifndef CONFIG_BINFMT_DISABLE
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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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: load_module
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*
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* Description:
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* Load a module into memory, bind it to an exported symbol take, and
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* prep the module for execution.
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*
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* Returned Value:
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* This is an end-user function, so it follows the normal convention:
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* Returns 0 (OK) on success. On failure, it returns -1 (ERROR) with
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* errno set appropriately.
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*
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****************************************************************************/
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int load_module(FAR struct binary_s *bin)
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{
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FAR struct binfmt_s *binfmt;
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int ret = -ENOENT;
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#ifdef CONFIG_DEBUG
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if (bin && bin->filename)
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#endif
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{
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bdbg("Loading %s\n", bin->filename);
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/* Disabling pre-emption should be sufficient protection while
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* accessing the list of registered binary format handlers.
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*/
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sched_lock();
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/* Traverse the list of registered binary format handlers. Stop
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* when either (1) a handler recognized and loads the format, or
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* (2) no handler recognizes the format.
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*/
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for (binfmt = g_binfmts; binfmt; binfmt = binfmt->next)
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{
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/* Use this handler to try to load the format */
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ret = binfmt->load(bin);
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if (ret == OK)
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{
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/* Successfully loaded -- break out with ret == 0 */
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bvdbg("Successfully loaded module %s\n", bin->filename);
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dump_module(bin);
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break;
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}
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}
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sched_unlock();
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}
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/* This is an end-user function. Return failures via errno */
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if (ret < 0)
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{
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bdbg("Returning errno %d\n", -ret);
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errno = -ret;
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return ERROR;
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}
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return OK;
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}
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#endif /* CONFIG_BINFMT_DISABLE */
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