Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _PARISC_BUG_H
3#define _PARISC_BUG_H
4
5/*
6 * Tell the user there is some problem.
7 * The offending file and line are encoded in the __bug_table section.
8 */
9
10#ifdef CONFIG_BUG
11#define HAVE_ARCH_BUG
12#define HAVE_ARCH_WARN_ON
13
14/* the break instruction is used as BUG() marker. */
15#define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff"
16#define PARISC_BUG_BREAK_INSN 0x03ffe01f /* PARISC_BUG_BREAK_ASM */
17
18#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
19# define __BUG_REL(val) ".word " __stringify(val) " - ."
20#else
21# define __BUG_REL(val) ".word " __stringify(val)
22#endif
23
24
25#ifdef CONFIG_DEBUG_BUGVERBOSE
26#define BUG() \
27 do { \
28 asm volatile("\n" \
29 "1:\t" PARISC_BUG_BREAK_ASM "\n" \
30 "\t.pushsection __bug_table,\"a\"\n" \
31 "\t.align 4\n" \
32 "2:\t" __BUG_REL(1b) "\n" \
33 "\t" __BUG_REL(%c0) "\n" \
34 "\t.short %1, %2\n" \
35 "\t.blockz %3-2*4-2*2\n" \
36 "\t.popsection" \
37 : : "i" (__FILE__), "i" (__LINE__), \
38 "i" (0), "i" (sizeof(struct bug_entry)) ); \
39 unreachable(); \
40 } while(0)
41
42#else
43#define BUG() \
44 do { \
45 asm volatile(PARISC_BUG_BREAK_ASM : : ); \
46 unreachable(); \
47 } while(0)
48#endif
49
50#ifdef CONFIG_DEBUG_BUGVERBOSE
51#define __WARN_FLAGS(cond_str, flags) \
52 do { \
53 asm volatile("\n" \
54 "1:\t" PARISC_BUG_BREAK_ASM "\n" \
55 "\t.pushsection __bug_table,\"a\"\n" \
56 "\t.align 4\n" \
57 "2:\t" __BUG_REL(1b) "\n" \
58 "\t" __BUG_REL(%c0) "\n" \
59 "\t.short %1, %2\n" \
60 "\t.blockz %3-2*4-2*2\n" \
61 "\t.popsection" \
62 : : "i" (WARN_CONDITION_STR(cond_str) __FILE__), "i" (__LINE__), \
63 "i" (BUGFLAG_WARNING|(flags)), \
64 "i" (sizeof(struct bug_entry)) ); \
65 } while(0)
66#else
67#define __WARN_FLAGS(cond_str, flags) \
68 do { \
69 asm volatile("\n" \
70 "1:\t" PARISC_BUG_BREAK_ASM "\n" \
71 "\t.pushsection __bug_table,\"a\"\n" \
72 "\t.align 4\n" \
73 "2:\t" __BUG_REL(1b) "\n" \
74 "\t.short %0\n" \
75 "\t.blockz %1-4-2\n" \
76 "\t.popsection" \
77 : : "i" (BUGFLAG_WARNING|(flags)), \
78 "i" (sizeof(struct bug_entry)) ); \
79 } while(0)
80#endif
81
82
83#define WARN_ON(x) ({ \
84 int __ret_warn_on = !!(x); \
85 if (__builtin_constant_p(__ret_warn_on)) { \
86 if (__ret_warn_on) \
87 __WARN(); \
88 } else { \
89 if (unlikely(__ret_warn_on)) \
90 __WARN(); \
91 } \
92 unlikely(__ret_warn_on); \
93})
94
95#endif
96
97#include <asm-generic/bug.h>
98#endif
99