[people/arne_f/kernel.git] / tools / objtool / check.h

/*
 * 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;
	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 *rodata, *whitelist;
	bool ignore_unreachables, c_file, hints;
};

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 */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version 2
	7	* of the License, or (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	16	*/
	17
	18	#ifndef _CHECK_H
	19	#define _CHECK_H
	20
	21	#include <stdbool.h>
	22	#include "elf.h"
	23	#include "cfi.h"
	24	#include "arch.h"
	25	#include "orc.h"
	26	#include <linux/hashtable.h>
	27
	28	struct insn_state {
	29	struct cfi_reg cfa;
	30	struct cfi_reg regs[CFI_NUM_REGS];
	31	int stack_size;
	32	unsigned char type;
	33	bool bp_scratch;
	34	bool drap;
	35	int drap_reg, drap_offset;
	36	struct cfi_reg vals[CFI_NUM_REGS];
	37	};
	38
	39	struct instruction {
	40	struct list_head list;
	41	struct hlist_node hash;
	42	struct section *sec;
	43	unsigned long offset;
	44	unsigned int len;
	45	unsigned char type;
	46	unsigned long immediate;
	47	bool alt_group, visited, dead_end, ignore, hint, save, restore, ignore_alts;
	48	bool retpoline_safe;
	49	struct symbol *call_dest;
	50	struct instruction *jump_dest;
	51	struct instruction *first_jump_src;
	52	struct list_head alts;
	53	struct symbol *func;
	54	struct stack_op stack_op;
	55	struct insn_state state;
	56	struct orc_entry orc;
	57	};
	58
	59	struct objtool_file {
	60	struct elf *elf;
	61	struct list_head insn_list;
	62	DECLARE_HASHTABLE(insn_hash, 16);
	63	struct section rodata, whitelist;
	64	bool ignore_unreachables, c_file, hints;
	65	};
	66
	67	int check(const char *objname, bool orc);
	68
	69	struct instruction find_insn(struct objtool_file file,
	70	struct section *sec, unsigned long offset);
	71
	72	#define for_each_insn(file, insn) \
	73	list_for_each_entry(insn, &file->insn_list, list)
	74
	75	#define sec_for_each_insn(file, sec, insn) \
	76	for (insn = find_insn(file, sec, 0); \
	77	insn && &insn->list != &file->insn_list && \
	78	insn->sec == sec; \
	79	insn = list_next_entry(insn, list))
	80
	81
	82	#endif /* _CHECK_H */