c749e4bfbd
Load all sections to LMA not VMA, so the startup code(e.g. start.S) need relocate .data section to the final address(VMA) and zero .bss section by self. For example, SiFli and Actions: Background: Device with small sram, Bootloader run in sram and psram, need boot to Application, with memory overlap and without XIP. VMA of .data is in "psram" and LMA in "rom", if not enable `ELF_LOADTO_LMA`, ELF loader will load the section to VMA (will fill bootloader itself). Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/****************************************************************************
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* binfmt/libelf/libelf_uninit.c
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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 <unistd.h>
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#include <debug.h>
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#include <errno.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_uninit
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*
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* Description:
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* Releases any resources committed by elf_init(). This essentially
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* undoes the actions of elf_init.
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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_uninit(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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/* Close the ELF file */
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if (loadinfo->file.f_inode)
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{
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file_close(&loadinfo->file);
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}
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return OK;
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}
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/****************************************************************************
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* Name: elf_freebuffers
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*
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* Description:
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* Release all working buffers.
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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_freebuffers(FAR struct elf_loadinfo_s *loadinfo)
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{
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/* Release all working allocations */
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if (loadinfo->phdr)
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{
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kmm_free((FAR void *)loadinfo->phdr);
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loadinfo->phdr = NULL;
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}
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if (loadinfo->shdr)
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{
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kmm_free(loadinfo->shdr);
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loadinfo->shdr = NULL;
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}
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if (loadinfo->iobuffer)
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{
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kmm_free(loadinfo->iobuffer);
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loadinfo->iobuffer = NULL;
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loadinfo->buflen = 0;
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}
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return OK;
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}
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