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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2012 Regents of the University of California
*/
#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>
#define __INSN_LENGTH_MASK _UL(0x3)
#define __INSN_LENGTH_32 _UL(0x3)
#define __COMPRESSED_INSN_MASK _UL(0xffff)
#define __BUG_INSN_32 _UL(0x00100073) /* ebreak */
#define __BUG_INSN_16 _UL(0x9002) /* c.ebreak */
#define GET_INSN_LENGTH(insn) \
({ \
unsigned long __len; \
__len = ((insn & __INSN_LENGTH_MASK) == __INSN_LENGTH_32) ? \
4UL : 2UL; \
__len; \
})
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\n\t" \
RISCV_SHORT " %2"
#else
#define __BUG_ENTRY \
__BUG_ENTRY_ADDR "\n\t" \
RISCV_SHORT " %2"
#endif
#ifdef CONFIG_GENERIC_BUG
#define __BUG_FLAGS(flags) \
do { \
__asm__ __volatile__ ( \
"1:\n\t" \
"ebreak\n" \
".pushsection __bug_table,\"aw\"\n\t" \
"2:\n\t" \
__BUG_ENTRY "\n\t" \
".org 2b + %3\n\t" \
".popsection" \
: \
: "i" (__FILE__), "i" (__LINE__), \
"i" (flags), \
"i" (sizeof(struct bug_entry))); \
} while (0)
#else /* CONFIG_GENERIC_BUG */
#define __BUG_FLAGS(flags) do { \
__asm__ __volatile__ ("ebreak\n"); \
} while (0)
#endif /* CONFIG_GENERIC_BUG */
#define BUG() do { \
__BUG_FLAGS(0); \
unreachable(); \
} while (0)
#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
#define HAVE_ARCH_BUG
#include <asm-generic/bug.h>
struct pt_regs;
struct task_struct;
void __show_regs(struct pt_regs *regs);
void die(struct pt_regs *regs, const char *str);
void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr);
#endif /* _ASM_RISCV_BUG_H */
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