Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012 Regents of the University of California
4 */
5
6#ifndef _ASM_RISCV_BUG_H
7#define _ASM_RISCV_BUG_H
8
9#include <linux/compiler.h>
10#include <linux/const.h>
11#include <linux/types.h>
12
13#include <asm/asm.h>
14
15#ifdef CONFIG_GENERIC_BUG
16#define __INSN_LENGTH_MASK _UL(0x3)
17#define __INSN_LENGTH_32 _UL(0x3)
18#define __COMPRESSED_INSN_MASK _UL(0xffff)
19
20#define __BUG_INSN_32 _UL(0x00100073) /* ebreak */
21#define __BUG_INSN_16 _UL(0x9002) /* c.ebreak */
22
23#ifndef __ASSEMBLY__
24typedef u32 bug_insn_t;
25
26#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
27#define __BUG_ENTRY_ADDR RISCV_INT " 1b - 2b"
28#define __BUG_ENTRY_FILE RISCV_INT " %0 - 2b"
29#else
30#define __BUG_ENTRY_ADDR RISCV_PTR " 1b"
31#define __BUG_ENTRY_FILE RISCV_PTR " %0"
32#endif
33
34#ifdef CONFIG_DEBUG_BUGVERBOSE
35#define __BUG_ENTRY \
36 __BUG_ENTRY_ADDR "\n\t" \
37 __BUG_ENTRY_FILE "\n\t" \
38 RISCV_SHORT " %1\n\t" \
39 RISCV_SHORT " %2"
40#else
41#define __BUG_ENTRY \
42 __BUG_ENTRY_ADDR "\n\t" \
43 RISCV_SHORT " %2"
44#endif
45
46#define __BUG_FLAGS(flags) \
47do { \
48 __asm__ __volatile__ ( \
49 "1:\n\t" \
50 "ebreak\n" \
51 ".pushsection __bug_table,\"aw\"\n\t" \
52 "2:\n\t" \
53 __BUG_ENTRY "\n\t" \
54 ".org 2b + %3\n\t" \
55 ".popsection" \
56 : \
57 : "i" (__FILE__), "i" (__LINE__), \
58 "i" (flags), \
59 "i" (sizeof(struct bug_entry))); \
60} while (0)
61
62#endif /* !__ASSEMBLY__ */
63#else /* CONFIG_GENERIC_BUG */
64#ifndef __ASSEMBLY__
65#define __BUG_FLAGS(flags) do { \
66 __asm__ __volatile__ ("ebreak\n"); \
67} while (0)
68#endif /* !__ASSEMBLY__ */
69#endif /* CONFIG_GENERIC_BUG */
70
71#define BUG() do { \
72 __BUG_FLAGS(0); \
73 unreachable(); \
74} while (0)
75
76#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
77
78#define HAVE_ARCH_BUG
79
80#include <asm-generic/bug.h>
81
82#ifndef __ASSEMBLY__
83
84struct pt_regs;
85struct task_struct;
86
87extern void die(struct pt_regs *regs, const char *str);
88extern void do_trap(struct pt_regs *regs, int signo, int code,
89 unsigned long addr, struct task_struct *tsk);
90
91#endif /* !__ASSEMBLY__ */
92
93#endif /* _ASM_RISCV_BUG_H */