Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (C) 2012 Regents of the University of California
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13
14#ifndef _ASM_RISCV_BUG_H
15#define _ASM_RISCV_BUG_H
16
17#include <linux/compiler.h>
18#include <linux/const.h>
19#include <linux/types.h>
20
21#include <asm/asm.h>
22
23#ifdef CONFIG_GENERIC_BUG
24#define __BUG_INSN _AC(0x00100073, UL) /* ebreak */
25
26#ifndef __ASSEMBLY__
27typedef u32 bug_insn_t;
28
29#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
30#define __BUG_ENTRY_ADDR RISCV_INT " 1b - 2b"
31#define __BUG_ENTRY_FILE RISCV_INT " %0 - 2b"
32#else
33#define __BUG_ENTRY_ADDR RISCV_PTR " 1b"
34#define __BUG_ENTRY_FILE RISCV_PTR " %0"
35#endif
36
37#ifdef CONFIG_DEBUG_BUGVERBOSE
38#define __BUG_ENTRY \
39 __BUG_ENTRY_ADDR "\n\t" \
40 __BUG_ENTRY_FILE "\n\t" \
41 RISCV_SHORT " %1"
42#else
43#define __BUG_ENTRY \
44 __BUG_ENTRY_ADDR
45#endif
46
47#define BUG() \
48do { \
49 __asm__ __volatile__ ( \
50 "1:\n\t" \
51 "ebreak\n" \
52 ".pushsection __bug_table,\"a\"\n\t" \
53 "2:\n\t" \
54 __BUG_ENTRY "\n\t" \
55 ".org 2b + %2\n\t" \
56 ".popsection" \
57 : \
58 : "i" (__FILE__), "i" (__LINE__), \
59 "i" (sizeof(struct bug_entry))); \
60 unreachable(); \
61} while (0)
62#endif /* !__ASSEMBLY__ */
63#else /* CONFIG_GENERIC_BUG */
64#ifndef __ASSEMBLY__
65#define BUG() \
66do { \
67 __asm__ __volatile__ ("ebreak\n"); \
68 unreachable(); \
69} while (0)
70#endif /* !__ASSEMBLY__ */
71#endif /* CONFIG_GENERIC_BUG */
72
73#define HAVE_ARCH_BUG
74
75#include <asm-generic/bug.h>
76
77#ifndef __ASSEMBLY__
78
79struct pt_regs;
80struct task_struct;
81
82extern void die(struct pt_regs *regs, const char *str);
83extern void do_trap(struct pt_regs *regs, int signo, int code,
84 unsigned long addr, struct task_struct *tsk);
85
86#endif /* !__ASSEMBLY__ */
87
88#endif /* _ASM_RISCV_BUG_H */