diff options
Diffstat (limited to 'nuttx/binfmt/libelf/libelf_unload.c')
-rw-r--r-- | nuttx/binfmt/libelf/libelf_unload.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/nuttx/binfmt/libelf/libelf_unload.c b/nuttx/binfmt/libelf/libelf_unload.c new file mode 100644 index 000000000..9e930e295 --- /dev/null +++ b/nuttx/binfmt/libelf/libelf_unload.c @@ -0,0 +1,97 @@ +/**************************************************************************** + * 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 <sys/mman.h> +#include <stdlib.h> +#include <debug.h> + +#include <nuttx/elf.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. + * + * Returned Value: + * 0 (OK) is returned on success and a negated errno is returned on + * failure. + * + ****************************************************************************/ + +int elf_unload(struct elf_loadinfo_s *loadinfo) +{ + /* Reset the contents of the info structure. */ + + /* Release the memory segments */ + + if (loadinfo->ispace) + { + kfree((void*)loadinfo->ispace, loadinfo->isize); + loadinfo->ispace = 0; + } + + if (loadinfo->dspace) + { + kfree((void*)loadinfo->dspace); + loadinfo->dspace = 0; + } + + return OK; +} + |