Linux kernel mirror (for testing)
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linux
1#ifndef _ASM_POWERPC_BUG_H
2#define _ASM_POWERPC_BUG_H
3#ifdef __KERNEL__
4
5#include <asm/asm-compat.h>
6/*
7 * Define an illegal instr to trap on the bug.
8 * We don't use 0 because that marks the end of a function
9 * in the ELF ABI. That's "Boo Boo" in case you wonder...
10 */
11#define BUG_OPCODE .long 0x00b00b00 /* For asm */
12#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */
13
14#ifndef __ASSEMBLY__
15
16struct bug_entry {
17 unsigned long bug_addr;
18 long line;
19 const char *file;
20 const char *function;
21};
22
23struct bug_entry *find_bug(unsigned long bugaddr);
24
25/*
26 * If this bit is set in the line number it means that the trap
27 * is for WARN_ON rather than BUG or BUG_ON.
28 */
29#define BUG_WARNING_TRAP 0x1000000
30
31#ifdef CONFIG_BUG
32
33#define BUG() do { \
34 __asm__ __volatile__( \
35 "1: twi 31,0,0\n" \
36 ".section __bug_table,\"a\"\n" \
37 "\t"PPC_LONG" 1b,%0,%1,%2\n" \
38 ".previous" \
39 : : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
40} while (0)
41
42#define BUG_ON(x) do { \
43 __asm__ __volatile__( \
44 "1: "PPC_TLNEI" %0,0\n" \
45 ".section __bug_table,\"a\"\n" \
46 "\t"PPC_LONG" 1b,%1,%2,%3\n" \
47 ".previous" \
48 : : "r" ((long)(x)), "i" (__LINE__), \
49 "i" (__FILE__), "i" (__FUNCTION__)); \
50} while (0)
51
52#define WARN_ON(x) do { \
53 __asm__ __volatile__( \
54 "1: "PPC_TLNEI" %0,0\n" \
55 ".section __bug_table,\"a\"\n" \
56 "\t"PPC_LONG" 1b,%1,%2,%3\n" \
57 ".previous" \
58 : : "r" ((long)(x)), \
59 "i" (__LINE__ + BUG_WARNING_TRAP), \
60 "i" (__FILE__), "i" (__FUNCTION__)); \
61} while (0)
62
63#define HAVE_ARCH_BUG
64#define HAVE_ARCH_BUG_ON
65#define HAVE_ARCH_WARN_ON
66#endif /* CONFIG_BUG */
67#endif /* __ASSEMBLY __ */
68
69#include <asm-generic/bug.h>
70
71#endif /* __KERNEL__ */
72#endif /* _ASM_POWERPC_BUG_H */