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/* =================================================================
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*
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* loader_fs.c
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*
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* Routines to read a library from a file system.
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*
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* =================================================================
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* ####ECOSGPLCOPYRIGHTBEGIN####
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* -------------------------------------------
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* This file is part of eCos, the Embedded Configurable Operating System.
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* Copyright (C) 2005, 2008 Free Software Foundation, Inc.
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*
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* eCos is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 or (at your option) any later
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* version.
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*
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* eCos is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with eCos; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* As a special exception, if other files instantiate templates or use
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* macros or inline functions from this file, or you compile this file
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* and link it with other works to produce a work based on this file,
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* this file does not by itself cause the resulting work to be covered by
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* the GNU General Public License. However the source code for this file
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* must still be made available in accordance with section (3) of the GNU
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* General Public License v2.
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*
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* This exception does not invalidate any other reasons why a work based
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* on this file might be covered by the GNU General Public License.
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* -------------------------------------------
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* ####ECOSGPLCOPYRIGHTEND####
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* =================================================================
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* #####DESCRIPTIONBEGIN####
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*
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* Author(s): Anthony Tonizzo (atonizzo@gmail.com)
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* Contributors: nickg@ecoscentric.com
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* Date: 2005-05-13
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* Purpose:
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* Description:
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*
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* ####DESCRIPTIONEND####
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*
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* =================================================================
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*/
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#include <cyg/infra/diag.h> // For diagnostic printing.
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#include <pkgconf/io_fileio.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <pkgconf/objloader.h>
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#include <cyg/objloader/elf.h>
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#include <cyg/objloader/objelf.h>
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#include <cyg/objloader/loader_fs.h>
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static size_t
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cyg_ldr_fs_read(PELF_OBJECT p, size_t s, size_t n, void *mem)
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{
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return fread(mem, s, n, (FILE*)p->ptr);
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}
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static cyg_int32
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cyg_ldr_fs_seek(PELF_OBJECT p, cyg_uint32 offs)
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{
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return fseek((FILE*)p->ptr, offs, SEEK_SET);
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}
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static cyg_int32
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cyg_ldr_fs_close(PELF_OBJECT p)
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{
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return fclose((FILE*)p->ptr);
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}
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PELF_OBJECT
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cyg_ldr_open_library_fs(char *ptr)
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{
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FILE *fp = fopen(ptr, "rb");
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if (fp == NULL)
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{
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cyg_ldr_last_error = "FILE NOT FOUND";
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return (void*)0;
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}
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// Create a file object to keep track of this library.
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PELF_OBJECT e_obj = (PELF_OBJECT)malloc(sizeof(ELF_OBJECT));
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CYG_ASSERT(e_obj != 0, "Cannot malloc() e_obj");
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if (e_obj == 0)
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{
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cyg_ldr_last_error = "ERROR IN MALLOC";
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fclose(fp);
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return (void*)0;
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}
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memset(e_obj, 0, sizeof(ELF_OBJECT));
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e_obj->ptr = (CYG_ADDRWORD)fp;
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e_obj->mode = CYG_LDR_MODE_FILESYSTEM;
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// Handlers for the file system open.
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e_obj->read = cyg_ldr_fs_read;
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e_obj->seek = cyg_ldr_fs_seek;
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e_obj->close = cyg_ldr_fs_close;
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return e_obj;
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}
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void
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cyg_ldr_close_library_fs(PELF_OBJECT p)
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{
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}
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