/* * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ #ifndef _CHECK_H #define _CHECK_H #include <stdbool.h> #include "elf.h" #include "cfi.h" #include "arch.h" #include "orc.h" #include <linux/hashtable.h> struct insn_state { struct cfi_reg cfa; struct cfi_reg regs[CFI_NUM_REGS]; int stack_size; unsigned char type; bool bp_scratch; bool drap, end; int drap_reg, drap_offset; struct cfi_reg vals[CFI_NUM_REGS]; }; struct instruction { struct list_head list; struct hlist_node hash; struct section *sec; unsigned long offset; unsigned int len; unsigned char type; unsigned long immediate; bool alt_group, visited, dead_end, ignore, hint, save, restore, ignore_alts; bool retpoline_safe; struct symbol *call_dest; struct instruction *jump_dest; struct instruction *first_jump_src; struct list_head alts; struct symbol *func; struct stack_op stack_op; struct insn_state state; struct orc_entry orc; }; struct objtool_file { struct elf *elf; struct list_head insn_list; DECLARE_HASHTABLE(insn_hash, 16); struct section *whitelist; bool ignore_unreachables, c_file, hints, rodata; }; int check(const char *objname, bool orc); struct instruction *find_insn(struct objtool_file *file, struct section *sec, unsigned long offset); #define for_each_insn(file, insn) \ list_for_each_entry(insn, &file->insn_list, list) #define sec_for_each_insn(file, sec, insn) \ for (insn = find_insn(file, sec, 0); \ insn && &insn->list != &file->insn_list && \ insn->sec == sec; \ insn = list_next_entry(insn, list)) #endif /* _CHECK_H */