You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
164 lines
5.1 KiB
164 lines
5.1 KiB
/**************************************************************************** |
|
* binfmt/binfmt_loadmodule.c |
|
* |
|
* Copyright (C) 2009, 2012 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 <sys/mman.h> |
|
#include <stdlib.h> |
|
#include <sched.h> |
|
#include <debug.h> |
|
#include <errno.h> |
|
|
|
#include <nuttx/binfmt/binfmt.h> |
|
|
|
#include "binfmt_internal.h" |
|
|
|
#ifndef CONFIG_BINFMT_DISABLE |
|
|
|
/**************************************************************************** |
|
* Pre-processor Definitions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Private Function Prototypes |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Private Data |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Private Functions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Name: exec_dtors |
|
* |
|
* Description: |
|
* Execute C++ static constructors. |
|
* |
|
* Input Parameters: |
|
* loadinfo - Load state information |
|
* |
|
* Returned Value: |
|
* 0 (OK) is returned on success and a negated errno is returned on |
|
* failure. |
|
* |
|
****************************************************************************/ |
|
|
|
#ifdef CONFIG_BINFMT_CONSTRUCTORS |
|
static inline void exec_dtors(FAR const struct binary_s *binp) |
|
{ |
|
binfmt_dtor_t *dtor = binp->dtors; |
|
int i; |
|
|
|
/* Execute each destructor */ |
|
|
|
for (i = 0; i < binp->ndtors; i++) |
|
{ |
|
bvdbg("Calling dtor %d at %p\n", i, (FAR void *)dtor); |
|
|
|
(*dtor)(); |
|
dtor++; |
|
} |
|
} |
|
#endif |
|
|
|
/**************************************************************************** |
|
* Public Functions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Name: unload_module |
|
* |
|
* Description: |
|
* Unload a (non-executing) module from memory. If the module has |
|
* been started (via exec_module) and has not exited, calling this will |
|
* be fatal. |
|
* |
|
* However, this function must be called after the module exist. How |
|
* this is done is up to your logic. Perhaps you register it to be |
|
* called by on_exit()? |
|
* |
|
* Returned Value: |
|
* This is a NuttX internal function so it follows the convention that |
|
* 0 (OK) is returned on success and a negated errno is returned on |
|
* failure. |
|
* |
|
****************************************************************************/ |
|
|
|
int unload_module(FAR const struct binary_s *binp) |
|
{ |
|
int i; |
|
|
|
if (binp) |
|
{ |
|
|
|
/* Execute C++ desctructors */ |
|
|
|
#ifdef CONFIG_BINFMT_CONSTRUCTORS |
|
exec_dtors(binp); |
|
#endif |
|
|
|
/* Unmap mapped address spaces */ |
|
|
|
if (binp->mapped) |
|
{ |
|
bvdbg("Unmapping address space: %p\n", binp->mapped); |
|
|
|
munmap(binp->mapped, binp->mapsize); |
|
} |
|
|
|
/* Free allocated address spaces */ |
|
|
|
for (i = 0; i < BINFMT_NALLOC; i++) |
|
{ |
|
if (binp->alloc[i]) |
|
{ |
|
bvdbg("Freeing alloc[%d]: %p\n", i, binp->alloc[i]); |
|
free(binp->alloc[i]); |
|
} |
|
} |
|
} |
|
|
|
return OK; |
|
} |
|
|
|
#endif /* CONFIG_BINFMT_DISABLE */ |
|
|
|
|