/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
 */

#ifndef _SPECIAL_H
#define _SPECIAL_H

#include <stdbool.h>
#include <objtool/check.h>
#include <objtool/elf.h>

#define C_JUMP_TABLE_SECTION ".data.rel.ro.c_jump_table"

struct special_alt {
        struct list_head list;

        bool group;
        bool jump_or_nop;
        u8 key_addend;

        struct section *orig_sec;
        unsigned long orig_off;

        struct section *new_sec;
        unsigned long new_off;

        unsigned int orig_len, new_len, feature; /* group only */
};

int special_get_alts(struct elf *elf, struct list_head *alts);

void arch_handle_alternative(struct special_alt *alt);

bool arch_support_alt_relocation(struct special_alt *special_alt,
                                 struct instruction *insn,
                                 struct reloc *reloc);
struct reloc *arch_find_switch_table(struct objtool_file *file,
                                     struct instruction *insn,
                                     unsigned long *table_size);
const char *arch_cpu_feature_name(int feature_number);

#endif /* _SPECIAL_H */