/*
 * SPDX-FileCopyrightText: 2008 Jiri Svoboda
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

/** @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

/** @}
 */