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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_S390_EXPOLINE_H
3#define _ASM_S390_EXPOLINE_H
4
5#ifndef __ASSEMBLY__
6
7#include <linux/types.h>
8#include <asm/facility.h>
9
10extern int nospec_disable;
11extern int nobp;
12
13static inline bool nobp_enabled(void)
14{
15 if (__is_defined(__DECOMPRESSOR))
16 return false;
17 return nobp && test_facility(82);
18}
19
20void nospec_init_branches(void);
21void nospec_auto_detect(void);
22void nospec_revert(s32 *start, s32 *end);
23
24static inline bool nospec_uses_trampoline(void)
25{
26 return __is_defined(CC_USING_EXPOLINE) && !nospec_disable;
27}
28
29#ifdef CONFIG_EXPOLINE_EXTERN
30
31void __s390_indirect_jump_r1(void);
32void __s390_indirect_jump_r2(void);
33void __s390_indirect_jump_r3(void);
34void __s390_indirect_jump_r4(void);
35void __s390_indirect_jump_r5(void);
36void __s390_indirect_jump_r6(void);
37void __s390_indirect_jump_r7(void);
38void __s390_indirect_jump_r8(void);
39void __s390_indirect_jump_r9(void);
40void __s390_indirect_jump_r10(void);
41void __s390_indirect_jump_r11(void);
42void __s390_indirect_jump_r12(void);
43void __s390_indirect_jump_r13(void);
44void __s390_indirect_jump_r14(void);
45void __s390_indirect_jump_r15(void);
46
47#endif
48
49#endif /* __ASSEMBLY__ */
50
51#endif /* _ASM_S390_EXPOLINE_H */