baa41469a7
This is a major rewrite of objtool. Instead of only tracking frame pointer changes, it now tracks all stack-related operations, including all register saves/restores. In addition to making stack validation more robust, this also paves the way for undwarf generation. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/678bd94c0566c6129bcc376cddb259c4c5633004.1498659915.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
|
|
* 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 <linux/hashtable.h>
|
|
|
|
struct insn_state {
|
|
struct cfi_reg cfa;
|
|
struct cfi_reg regs[CFI_NUM_REGS];
|
|
int stack_size;
|
|
bool bp_scratch;
|
|
bool drap;
|
|
int drap_reg;
|
|
};
|
|
|
|
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;
|
|
struct symbol *call_dest;
|
|
struct instruction *jump_dest;
|
|
struct list_head alts;
|
|
struct symbol *func;
|
|
struct stack_op stack_op;
|
|
struct insn_state state;
|
|
};
|
|
|
|
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;
|
|
};
|
|
|
|
int check(const char *objname, bool nofp);
|
|
|
|
#define for_each_insn(file, insn) \
|
|
list_for_each_entry(insn, &file->insn_list, list)
|
|
|
|
#endif /* _CHECK_H */
|