source: mainline/uspace/lib/c/include/rtld/dynamic.h@ 9bfa8c8

/*
 * 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

/** @}
 */