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.
114 lines
4.0 KiB
114 lines
4.0 KiB
/**************************************************************************** |
|
* binfmt/libelf/libelf_unload.c |
|
* |
|
* Copyright (C) 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 <stdlib.h> |
|
#include <debug.h> |
|
|
|
#include <nuttx/kmalloc.h> |
|
#include <nuttx/binfmt/elf.h> |
|
|
|
#include "libelf.h" |
|
|
|
/**************************************************************************** |
|
* Pre-Processor Definitions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Private Constant Data |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Private Functions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Public Functions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Name: elf_unload |
|
* |
|
* Description: |
|
* This function unloads the object from memory. This essentially undoes |
|
* the actions of elf_load. It is called only under certain error |
|
* conditions after the the module has been loaded but not yet started. |
|
* |
|
* Returned Value: |
|
* 0 (OK) is returned on success and a negated errno is returned on |
|
* failure. |
|
* |
|
****************************************************************************/ |
|
|
|
int elf_unload(struct elf_loadinfo_s *loadinfo) |
|
{ |
|
/* Free all working buffers */ |
|
|
|
elf_freebuffers(loadinfo); |
|
|
|
/* Release memory holding the relocated ELF image */ |
|
|
|
elf_addrenv_free(loadinfo); |
|
|
|
/* Release memory used to hold static constructors and destructors */ |
|
|
|
#ifdef CONFIG_BINFMT_CONSTRUCTORS |
|
if (loadinfo->ctoralloc != 0) |
|
{ |
|
kfree(loadinfo->ctoralloc); |
|
loadinfo->ctoralloc = NULL; |
|
} |
|
|
|
loadinfo->ctors = NULL; |
|
loadinfo->nctors = 0; |
|
|
|
if (loadinfo->dtoralloc != 0) |
|
{ |
|
kfree(loadinfo->dtoralloc); |
|
loadinfo->dtoralloc = NULL; |
|
} |
|
|
|
loadinfo->dtors = NULL; |
|
loadinfo->ndtors = 0; |
|
#endif |
|
|
|
return OK; |
|
} |
|
|
|
|