/*
* Copyright (c) 2006 Sergey Bondari
* Copyright (c) 2008 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup libc
* @{
*/
/** @file
* @brief ELF loader structures and public functions.
*/
#ifndef ELF_MOD_H_
#define ELF_MOD_H_
#include <elf/elf.h>
#include <stddef.h>
#include <stdint.h>
#include <loader/pcb.h>
typedef enum {
/** Leave all segments in RW access mode. */
ELDF_RW = 1
} eld_flags_t;
/** TLS info for a module */
typedef struct {
/** tdata section image */
void *tdata;
/** Size of tdata section image in bytes */
size_t tdata_size;
/** Size of tbss section */
size_t tbss_size;
/** Alignment of TLS initialization image */
size_t tls_align;
} elf_tls_info_t;
/**
* Some data extracted from the headers are stored here
*/
typedef struct {
/** Entry point */
entry_point_t entry;
/** The base address where the file has been loaded.
* Points to the ELF file header.
*/
void *base;
/** ELF interpreter name or NULL if statically-linked */
const char *interp;
/** Pointer to the dynamic section */
void *dynamic;
/** TLS info */
elf_tls_info_t tls;
} elf_finfo_t;
/**
* Holds information about an ELF binary being loaded.
*/
typedef struct {
/** Filedescriptor of the file from which we are loading */
int fd;
/** Difference between run-time addresses and link-time addresses */
uintptr_t bias;
/** Flags passed to the ELF loader. */
eld_flags_t flags;
/** Store extracted info here */
elf_finfo_t *info;
} elf_ld_t;
extern errno_t elf_load_file(int, eld_flags_t, elf_finfo_t *);
extern errno_t elf_load_file_name(const char *, eld_flags_t, elf_finfo_t *);
#endif
/** @}
*/