/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_MODULE_H
#define _ASM_S390_MODULE_H

#include <asm-generic/module.h>

/*
 * This file contains the s390 architecture specific module code.
 */

struct mod_arch_syminfo {
        unsigned long got_offset;
        unsigned long plt_offset;
        int got_initialized;
        int plt_initialized;
};

struct mod_arch_specific {
        /* Starting offset of got in the module core memory. */
        unsigned long got_offset;
        /* Starting offset of plt in the module core memory. */
        unsigned long plt_offset;
        /* Size of the got. */
        unsigned long got_size;
        /* Size of the plt. */
        unsigned long plt_size;
        /* Number of symbols in syminfo. */
        int nsyms;
        /* Additional symbol information (got and plt offsets). */
        struct mod_arch_syminfo *syminfo;
#ifdef CONFIG_FUNCTION_TRACER
        /* Start of memory reserved for ftrace hotpatch trampolines. */
        struct ftrace_hotpatch_trampoline *trampolines_start;
        /* End of memory reserved for ftrace hotpatch trampolines. */
        struct ftrace_hotpatch_trampoline *trampolines_end;
        /* Next unused ftrace hotpatch trampoline slot. */
        struct ftrace_hotpatch_trampoline *next_trampoline;
#endif /* CONFIG_FUNCTION_TRACER */
};

static inline const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
                                           const Elf_Shdr *sechdrs,
                                           const char *name)
{
        const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
        const Elf_Shdr *s, *se;

        for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
                if (strcmp(name, secstrs + s->sh_name) == 0)
                        return s;
        }
        return NULL;
}

#endif /* _ASM_S390_MODULE_H */