1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_S390_BUG_H
3#define _ASM_S390_BUG_H
4
5#include <linux/compiler.h>
6
7#ifdef CONFIG_BUG
8
9#ifdef CONFIG_DEBUG_BUGVERBOSE
10
11#define __EMIT_BUG(x) do {					\
12	asm_inline volatile(					\
13		"0:	mc	0,0\n"				\
14		".section .rodata.str,\"aMS\",@progbits,1\n"	\
15		"1:	.asciz	\""__FILE__"\"\n"		\
16		".previous\n"					\
17		".section __bug_table,\"awM\",@progbits,%2\n"	\
18		"2:	.long	0b-.\n"				\
19		"	.long	1b-.\n"				\
20		"	.short	%0,%1\n"			\
21		"	.org	2b+%2\n"			\
22		".previous\n"					\
23		: : "i" (__LINE__),				\
24		    "i" (x),					\
25		    "i" (sizeof(struct bug_entry)));		\
26} while (0)
27
28#else /* CONFIG_DEBUG_BUGVERBOSE */
29
30#define __EMIT_BUG(x) do {					\
31	asm_inline volatile(					\
32		"0:	mc	0,0\n"				\
33		".section __bug_table,\"awM\",@progbits,%1\n"	\
34		"1:	.long	0b-.\n"				\
35		"	.short	%0\n"				\
36		"	.org	1b+%1\n"			\
37		".previous\n"					\
38		: : "i" (x),					\
39		    "i" (sizeof(struct bug_entry)));		\
40} while (0)
41
42#endif /* CONFIG_DEBUG_BUGVERBOSE */
43
44#define BUG() do {					\
45	__EMIT_BUG(0);					\
46	unreachable();					\
47} while (0)
48
49#define __WARN_FLAGS(flags) do {			\
50	__EMIT_BUG(BUGFLAG_WARNING|(flags));		\
51} while (0)
52
53#define WARN_ON(x) ({					\
54	int __ret_warn_on = !!(x);			\
55	if (__builtin_constant_p(__ret_warn_on)) {	\
56		if (__ret_warn_on)			\
57			__WARN();			\
58	} else {					\
59		if (unlikely(__ret_warn_on))		\
60			__WARN();			\
61	}						\
62	unlikely(__ret_warn_on);			\
63})
64
65#define HAVE_ARCH_BUG
66#define HAVE_ARCH_WARN_ON
67#endif /* CONFIG_BUG */
68
69#include <asm-generic/bug.h>
70
71#endif /* _ASM_S390_BUG_H */
72