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- /****************************************************************************
- * libs/libc/modlib/modlib_unload.c
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership. The
- * ASF licenses this file to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the
- * License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <stdlib.h>
- #include <debug.h>
- #include <nuttx/lib/modlib.h>
- #include "libc.h"
- #include "modlib/modlib.h"
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: modlib_unload
- *
- * Description:
- * This function unloads the object from memory. This essentially undoes
- * the actions of modlib_load(). It is called only under certain error
- * conditions after 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 modlib_unload(struct mod_loadinfo_s *loadinfo)
- {
- /* Free all working buffers */
- modlib_freebuffers(loadinfo);
- /* Release memory holding the relocated ELF image */
- #if defined(CONFIG_ARCH_USE_MODULE_TEXT)
- if (loadinfo->textalloc != 0)
- {
- up_module_text_free((FAR void *)loadinfo->textalloc);
- }
- if (loadinfo->datastart != 0)
- {
- lib_free((FAR void *)loadinfo->datastart);
- }
- #else
- if (loadinfo->textalloc != 0)
- {
- lib_free((FAR void *)loadinfo->textalloc);
- }
- #endif
- /* Clear out all indications of the allocated address environment */
- loadinfo->textalloc = 0;
- loadinfo->datastart = 0;
- loadinfo->textsize = 0;
- loadinfo->datasize = 0;
- return OK;
- }
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