Release 4.15 arch/riscv/include/asm/bug.h

/*
 * Copyright (C) 2012 Regents of the University of California
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 */

#ifndef _ASM_RISCV_BUG_H

#define _ASM_RISCV_BUG_H

#include <linux/compiler.h>
#include <linux/const.h>
#include <linux/types.h>

#include <asm/asm.h>

#ifdef CONFIG_GENERIC_BUG

#define __BUG_INSN	_AC(0x00100073, UL) 
/* ebreak */

#ifndef __ASSEMBLY__

typedef u32 bug_insn_t;

#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS

#define __BUG_ENTRY_ADDR	RISCV_INT " 1b - 2b"

#define __BUG_ENTRY_FILE	RISCV_INT " %0 - 2b"
#else

#define __BUG_ENTRY_ADDR	RISCV_PTR " 1b"

#define __BUG_ENTRY_FILE	RISCV_PTR " %0"
#endif

#ifdef CONFIG_DEBUG_BUGVERBOSE

#define __BUG_ENTRY			\
	__BUG_ENTRY_ADDR "\n\t"         \
        __BUG_ENTRY_FILE "\n\t"         \
        RISCV_SHORT " %1"
#else

#define __BUG_ENTRY			\
	__BUG_ENTRY_ADDR
#endif


#define BUG()							\
do {                                                            \
        __asm__ __volatile__ (                                  \
                "1:\n\t"                                        \
                        "ebreak\n"                              \
                        ".pushsection __bug_table,\"a\"\n\t"    \
                "2:\n\t"                                        \
                        __BUG_ENTRY "\n\t"                      \
                        ".org 2b + %2\n\t"                      \
                        ".popsection"                           \
                :                                               \
                : "i" (__FILE__), "i" (__LINE__),               \
                  "i" (sizeof(struct bug_entry)));              \
        unreachable();                                          \
} while (0)
#endif /* !__ASSEMBLY__ */
#else /* CONFIG_GENERIC_BUG */
#ifndef __ASSEMBLY__

#define BUG()							\
do {                                                            \
        __asm__ __volatile__ ("ebreak\n");                      \
        unreachable();                                          \
} while (0)
#endif /* !__ASSEMBLY__ */
#endif /* CONFIG_GENERIC_BUG */


#define HAVE_ARCH_BUG

#include <asm-generic/bug.h>

#ifndef __ASSEMBLY__

struct pt_regs;
struct task_struct;

extern void die(struct pt_regs *regs, const char *str);
extern void do_trap(struct pt_regs *regs, int signo, int code,
	unsigned long addr, struct task_struct *tsk);

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_RISCV_BUG_H */
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Directory: arch/riscv/include/asm

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