103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/****************************************************************************
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* binfmt/libelf/libelf_unload.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <stdlib.h>
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#include <debug.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/binfmt/elf.h>
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#include "libelf.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Constant 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: elf_unload
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*
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* Description:
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* This function unloads the object from memory. This essentially undoes
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* the actions of elf_load. It is called only under certain error
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* conditions after the module has been loaded but not yet started.
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*
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* Returned Value:
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* 0 (OK) is returned on success and a negated errno is returned on
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* failure.
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*
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****************************************************************************/
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int elf_unload(FAR struct elf_loadinfo_s *loadinfo)
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{
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/* Free all working buffers */
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elf_freebuffers(loadinfo);
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/* Release memory holding the relocated ELF image */
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elf_addrenv_free(loadinfo);
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/* Release memory used to hold static constructors and destructors */
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#ifdef CONFIG_BINFMT_CONSTRUCTORS
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# ifndef CONFIG_ARCH_ADDRENV
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if (loadinfo->ctoralloc != 0)
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{
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kumm_free(loadinfo->ctoralloc);
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}
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if (loadinfo->dtoralloc != 0)
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{
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kumm_free(loadinfo->dtoralloc);
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}
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# endif
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loadinfo->ctoralloc = NULL;
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loadinfo->ctors = NULL;
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loadinfo->nctors = 0;
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loadinfo->dtoralloc = NULL;
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loadinfo->dtors = NULL;
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loadinfo->ndtors = 0;
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#endif
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return OK;
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}
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