/*
* 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
*/
#ifndef _LIBC_RTLD_DYNAMIC_H_
#define _LIBC_RTLD_DYNAMIC_H_
#include <stdbool.h>
#include <rtld/elf_dyn.h>
#include <libarch/rtld/dynamic.h>
/**
* Holds the data extracted from an ELF Dynamic section.
*
* The data is already pre-processed: Pointers are adjusted
* to their final run-time values by adding the load bias
* and indices into the symbol table are converted to pointers.
*/
typedef struct dyn_info {
/** Relocation table without explicit addends */
void *rel;
size_t rel_sz;
size_t rel_ent;
/** Relocation table with explicit addends */
void *rela;
size_t rela_sz;
size_t rela_ent;
/** PLT relocation table */
void *jmp_rel;
size_t plt_rel_sz;
/** Type of relocations used for the PLT, either DT_REL or DT_RELA */
int plt_rel;
/** Pointer to PLT/GOT (processor-specific) */
void *plt_got;
/** Hash table */
elf_word *hash;
/** String table */
char *str_tab;
size_t str_sz;
/** Symbol table */
void *sym_tab;
size_t sym_ent;
void *init; /**< Module initialization code */
void *fini; /**< Module cleanup code */
const char *soname; /**< Library identifier */
char *rpath; /**< Library search path list */
bool symbolic;
bool text_rel;
bool bind_now;
/* Assume for now that there's at most one needed library */
char *needed;
/** Pointer to the module's dynamic section */
elf_dyn_t *dynamic;
/** Architecture-specific info. */
dyn_info_arch_t arch;
} dyn_info_t;
void dynamic_parse(elf_dyn_t *dyn_ptr, size_t bias, dyn_info_t *info);
void dyn_parse_arch(elf_dyn_t *dp, size_t bias, dyn_info_t *info);
#endif
/** @}
*/