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1da177e4 LT |
1 | #ifndef _PPC64_BUG_H |
2 | #define _PPC64_BUG_H | |
3 | ||
4 | /* | |
5 | * Define an illegal instr to trap on the bug. | |
6 | * We don't use 0 because that marks the end of a function | |
7 | * in the ELF ABI. That's "Boo Boo" in case you wonder... | |
8 | */ | |
9 | #define BUG_OPCODE .long 0x00b00b00 /* For asm */ | |
10 | #define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */ | |
11 | ||
12 | #ifndef __ASSEMBLY__ | |
13 | ||
14 | struct bug_entry { | |
15 | unsigned long bug_addr; | |
16 | long line; | |
17 | const char *file; | |
18 | const char *function; | |
19 | }; | |
20 | ||
21 | struct bug_entry *find_bug(unsigned long bugaddr); | |
22 | ||
23 | /* | |
24 | * If this bit is set in the line number it means that the trap | |
25 | * is for WARN_ON rather than BUG or BUG_ON. | |
26 | */ | |
27 | #define BUG_WARNING_TRAP 0x1000000 | |
28 | ||
29 | #define BUG() do { \ | |
30 | __asm__ __volatile__( \ | |
31 | "1: twi 31,0,0\n" \ | |
32 | ".section __bug_table,\"a\"\n\t" \ | |
33 | " .llong 1b,%0,%1,%2\n" \ | |
34 | ".previous" \ | |
35 | : : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \ | |
36 | } while (0) | |
37 | ||
38 | #define BUG_ON(x) do { \ | |
39 | __asm__ __volatile__( \ | |
40 | "1: tdnei %0,0\n" \ | |
41 | ".section __bug_table,\"a\"\n\t" \ | |
42 | " .llong 1b,%1,%2,%3\n" \ | |
43 | ".previous" \ | |
44 | : : "r" (x), "i" (__LINE__), "i" (__FILE__), \ | |
45 | "i" (__FUNCTION__)); \ | |
46 | } while (0) | |
47 | ||
48 | #define WARN_ON(x) do { \ | |
49 | __asm__ __volatile__( \ | |
50 | "1: tdnei %0,0\n" \ | |
51 | ".section __bug_table,\"a\"\n\t" \ | |
52 | " .llong 1b,%1,%2,%3\n" \ | |
53 | ".previous" \ | |
54 | : : "r" (x), "i" (__LINE__ + BUG_WARNING_TRAP), \ | |
55 | "i" (__FILE__), "i" (__FUNCTION__)); \ | |
56 | } while (0) | |
57 | ||
58 | #endif | |
59 | ||
60 | #define HAVE_ARCH_BUG | |
61 | #define HAVE_ARCH_BUG_ON | |
62 | #define HAVE_ARCH_WARN_ON | |
63 | #include <asm-generic/bug.h> | |
64 | ||
65 | #endif |