7dcfcd46b9
Add the --mcount option for generating __mcount_loc sections needed for dynamic ftrace. Using this pass requires the kernel to be compiled with -mfentry and CC_USING_NOP_MCOUNT to be defined in Makefile. Bug: 145210207 Change-Id: I34eeeb00c184bf265391549094fc15525536886b Link: https://lore.kernel.org/lkml/20200625200235.GQ4781@hirez.programming.kicks-ass.net/ Signed-off-by: Peter Zijlstra <peterz@infradead.org> [Sami: rebased, dropped config changes, fixed to actually use --mcount, and wrote a commit message.] Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org>
34 lines
768 B
C
34 lines
768 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Copyright (C) 2020 Matt Helsley <mhelsley@vmware.com>
|
|
*/
|
|
|
|
#ifndef _OBJTOOL_H
|
|
#define _OBJTOOL_H
|
|
|
|
#include <stdbool.h>
|
|
#include <linux/list.h>
|
|
#include <linux/hashtable.h>
|
|
|
|
#include "elf.h"
|
|
|
|
#define __weak __attribute__((weak))
|
|
|
|
struct objtool_file {
|
|
struct elf *elf;
|
|
struct list_head insn_list;
|
|
DECLARE_HASHTABLE(insn_hash, 20);
|
|
struct list_head static_call_list;
|
|
struct list_head mcount_loc_list;
|
|
bool ignore_unreachables, c_file, hints, rodata;
|
|
};
|
|
|
|
struct objtool_file *objtool_open_read(const char *_objname);
|
|
|
|
int check(struct objtool_file *file);
|
|
int orc_dump(const char *objname);
|
|
int create_orc(struct objtool_file *file);
|
|
int create_orc_sections(struct objtool_file *file);
|
|
|
|
#endif /* _OBJTOOL_H */
|