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