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Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -07001/*
2 * Copyright (C) 2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#ifndef __ASM_AVR32_BUG_H
9#define __ASM_AVR32_BUG_H
10
11#ifdef CONFIG_BUG
12
13/*
14 * According to our Chief Architect, this compact opcode is very
15 * unlikely to ever be implemented.
16 */
17#define AVR32_BUG_OPCODE 0x5df0
18
19#ifdef CONFIG_DEBUG_BUGVERBOSE
20
Haavard Skinnemoen623b0352007-03-13 17:59:11 +010021#define _BUG_OR_WARN(flags) \
22 asm volatile( \
23 "1: .hword %0\n" \
24 " .section __bug_table,\"a\",@progbits\n" \
25 "2: .long 1b\n" \
26 " .long %1\n" \
27 " .short %2\n" \
28 " .short %3\n" \
29 " .org 2b + %4\n" \
30 " .previous" \
31 : \
32 : "i"(AVR32_BUG_OPCODE), "i"(__FILE__), \
33 "i"(__LINE__), "i"(flags), \
34 "i"(sizeof(struct bug_entry)))
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070035
36#else
37
Haavard Skinnemoen623b0352007-03-13 17:59:11 +010038#define _BUG_OR_WARN(flags) \
39 asm volatile( \
40 "1: .hword %0\n" \
41 " .section __bug_table,\"a\",@progbits\n" \
42 "2: .long 1b\n" \
43 " .short %1\n" \
44 " .org 2b + %2\n" \
45 " .previous" \
46 : \
47 : "i"(AVR32_BUG_OPCODE), "i"(flags), \
48 "i"(sizeof(struct bug_entry)))
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070049
50#endif /* CONFIG_DEBUG_BUGVERBOSE */
51
Haavard Skinnemoen623b0352007-03-13 17:59:11 +010052#define BUG() \
53 do { \
54 _BUG_OR_WARN(0); \
David Daney27d16d02009-12-04 17:44:54 -080055 unreachable(); \
Haavard Skinnemoen623b0352007-03-13 17:59:11 +010056 } while (0)
57
58#define WARN_ON(condition) \
59 ({ \
Heiko Carstensfd0cbdd2007-08-02 00:18:38 +020060 int __ret_warn_on = !!(condition); \
Haavard Skinnemoen623b0352007-03-13 17:59:11 +010061 if (unlikely(__ret_warn_on)) \
62 _BUG_OR_WARN(BUGFLAG_WARNING); \
63 unlikely(__ret_warn_on); \
64 })
65
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070066#define HAVE_ARCH_BUG
Haavard Skinnemoen623b0352007-03-13 17:59:11 +010067#define HAVE_ARCH_WARN_ON
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070068
69#endif /* CONFIG_BUG */
70
71#include <asm-generic/bug.h>
72
David Howellsae473942012-03-28 18:30:01 +010073struct pt_regs;
74void die(const char *str, struct pt_regs *regs, long err);
75void _exception(long signr, struct pt_regs *regs, int code,
76 unsigned long addr);
77
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070078#endif /* __ASM_AVR32_BUG_H */