43d5430ad7
Provide infrastructure for architectures to rewrite/augment compiler generated retpoline calls. Similar to what we do for static_call()s, keep track of the instructions that are retpoline calls. Use the same list_head, since a retpoline call cannot also be a static_call. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Miroslav Benes <mbenes@suse.cz> Link: https://lkml.kernel.org/r/20210326151300.130805730@infradead.org
33 lines
763 B
C
33 lines
763 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 <objtool/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 retpoline_call_list;
|
|
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 orc_create(struct objtool_file *file);
|
|
|
|
#endif /* _OBJTOOL_H */
|