1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com> 4 */ 5 6 #ifndef _CHECK_H 7 #define _CHECK_H 8 9 #include <stdbool.h> 10 #include "elf.h" 11 #include "cfi.h" 12 #include "arch.h" 13 #include "orc.h" 14 #include <linux/hashtable.h> 15 16 struct insn_state { 17 struct cfi_reg cfa; 18 struct cfi_reg regs[CFI_NUM_REGS]; 19 int stack_size; 20 unsigned char type; 21 bool bp_scratch; 22 bool drap, end, uaccess, df; 23 unsigned int uaccess_stack; 24 int drap_reg, drap_offset; 25 struct cfi_reg vals[CFI_NUM_REGS]; 26 }; 27 28 struct instruction { 29 struct list_head list; 30 struct hlist_node hash; 31 struct section *sec; 32 unsigned long offset; 33 unsigned int len; 34 enum insn_type type; 35 unsigned long immediate; 36 bool alt_group, dead_end, ignore, hint, save, restore, ignore_alts; 37 bool retpoline_safe; 38 u8 visited; 39 struct symbol *call_dest; 40 struct instruction *jump_dest; 41 struct instruction *first_jump_src; 42 struct rela *jump_table; 43 struct list_head alts; 44 struct symbol *func; 45 struct stack_op stack_op; 46 struct insn_state state; 47 struct orc_entry orc; 48 }; 49 50 struct objtool_file { 51 struct elf *elf; 52 struct list_head insn_list; 53 DECLARE_HASHTABLE(insn_hash, 16); 54 bool ignore_unreachables, c_file, hints, rodata; 55 }; 56 57 int check(const char *objname, bool orc); 58 59 struct instruction *find_insn(struct objtool_file *file, 60 struct section *sec, unsigned long offset); 61 62 #define for_each_insn(file, insn) \ 63 list_for_each_entry(insn, &file->insn_list, list) 64 65 #define sec_for_each_insn(file, sec, insn) \ 66 for (insn = find_insn(file, sec, 0); \ 67 insn && &insn->list != &file->insn_list && \ 68 insn->sec == sec; \ 69 insn = list_next_entry(insn, list)) 70 71 72 #endif /* _CHECK_H */ 73