Function elf_load_ehdr

components/lwp/lwp_elf.c:347–381

* @brief Load and validate the ELF header from a file. * * This function opens the ELF file, reads its elf header, and performs basic validation * to ensure it's a valid ELF file. It also retrieves the file size and stores the * file descriptor for subsequent operations. * * @param elf_info Pointer to the ELF file information structure. * @return RT_EOK on success, -RT_ERROR on failure. *

 * @return RT_EOK on success, -RT_ERROR on failure.
 */
static int elf_load_ehdr(elf_info_t *elf_info)
{
    int ret;

    ret = elf_file_open(elf_info->filename);
    if (ret < 0)
    {
        LOG_E("%s : elf_file_open %s failed", __func__, elf_info->filename);
        return ret;
    }

    elf_info->fd = ret;

    ret = elf_file_length(elf_info->filename, &elf_info->file_len);
    if (ret != RT_EOK)
    {
        return -RT_ERROR;
    }

    ret = elf_file_read(elf_info->fd, (rt_uint8_t *)&elf_info->ehdr, sizeof(Elf_Ehdr), 0);
    if (ret != RT_EOK)
    {
        LOG_E("%s : elf_file_read failed, ret : %d", __func__, ret);
        return -RT_ERROR;
    }

    ret = elf_check_ehdr(&elf_info->ehdr, elf_info->file_len);
    if (ret != RT_EOK)
    {
        LOG_E("%s : elf_check_ehdr failed, ret : %d", __func__, ret);
        return -RT_ERROR;
    }

    return RT_EOK;
}

/**
 * @brief Load the program header table from an ELF file.