1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com> 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _SPECIAL_H 7*4882a593Smuzhiyun #define _SPECIAL_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <stdbool.h> 10*4882a593Smuzhiyun #include "check.h" 11*4882a593Smuzhiyun #include "elf.h" 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define C_JUMP_TABLE_SECTION ".rodata..c_jump_table" 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun struct special_alt { 16*4882a593Smuzhiyun struct list_head list; 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun bool group; 19*4882a593Smuzhiyun bool skip_orig; 20*4882a593Smuzhiyun bool skip_alt; 21*4882a593Smuzhiyun bool jump_or_nop; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun struct section *orig_sec; 24*4882a593Smuzhiyun unsigned long orig_off; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun struct section *new_sec; 27*4882a593Smuzhiyun unsigned long new_off; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun unsigned int orig_len, new_len; /* group only */ 30*4882a593Smuzhiyun }; 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun int special_get_alts(struct elf *elf, struct list_head *alts); 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun void arch_handle_alternative(unsigned short feature, struct special_alt *alt); 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun bool arch_support_alt_relocation(struct special_alt *special_alt, 37*4882a593Smuzhiyun struct instruction *insn, 38*4882a593Smuzhiyun struct reloc *reloc); 39*4882a593Smuzhiyun struct reloc *arch_find_switch_table(struct objtool_file *file, 40*4882a593Smuzhiyun struct instruction *insn); 41*4882a593Smuzhiyun #endif /* _SPECIAL_H */ 42