aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-ppc64/bug.h
blob: db31dd22233c6927f0f6dd8bb9682784d9b0f47e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
#ifndef _PPC64_BUG_H
#define _PPC64_BUG_H

/*
 * Define an illegal instr to trap on the bug.
 * We don't use 0 because that marks the end of a function
 * in the ELF ABI.  That's "Boo Boo" in case you wonder...
 */
#define BUG_OPCODE .long 0x00b00b00  /* For asm */
#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */

#ifndef __ASSEMBLY__

struct bug_entry {
	unsigned long	bug_addr;
	long		line;
	const char	*file;
	const char	*function;
};

struct bug_entry *find_bug(unsigned long bugaddr);

/*
 * If this bit is set in the line number it means that the trap
 * is for WARN_ON rather than BUG or BUG_ON.
 */
#define BUG_WARNING_TRAP	0x1000000

#define BUG() do {							 \
	__asm__ __volatile__(						 \
		"1:	twi 31,0,0\n"					 \
		".section __bug_table,\"a\"\n\t"			 \
		"	.llong 1b,%0,%1,%2\n"				 \
		".previous"						 \
		: : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
} while (0)

#define BUG_ON(x) do {						\
	__asm__ __volatile__(					\
		"1:	tdnei %0,0\n"				\
		".section __bug_table,\"a\"\n\t"		\
		"	.llong 1b,%1,%2,%3\n"			\
		".previous"					\
		: : "r" (x), "i" (__LINE__), "i" (__FILE__),	\
		    "i" (__FUNCTION__));			\
} while (0)

#define WARN_ON(x) do {						\
	__asm__ __volatile__(					\
		"1:	tdnei %0,0\n"				\
		".section __bug_table,\"a\"\n\t"		\
		"	.llong 1b,%1,%2,%3\n"			\
		".previous"					\
		: : "r" (x), "i" (__LINE__ + BUG_WARNING_TRAP),	\
		    "i" (__FILE__), "i" (__FUNCTION__));	\
} while (0)

#endif

#define HAVE_ARCH_BUG
#define HAVE_ARCH_BUG_ON
#define HAVE_ARCH_WARN_ON
#include <asm-generic/bug.h>

#endif