/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_BUG_H
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#define _ASM_RISCV_BUG_H
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#include <linux/compiler.h>
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#include <linux/const.h>
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#include <linux/types.h>
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#include <asm/asm.h>
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#define __INSN_LENGTH_MASK _UL(0x3)
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#define __INSN_LENGTH_32 _UL(0x3)
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#define __COMPRESSED_INSN_MASK _UL(0xffff)
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#define __BUG_INSN_32 _UL(0x00100073) /* ebreak */
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#define __BUG_INSN_16 _UL(0x9002) /* c.ebreak */
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#define GET_INSN_LENGTH(insn) \
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({ \
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unsigned long __len; \
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__len = ((insn & __INSN_LENGTH_MASK) == __INSN_LENGTH_32) ? \
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4UL : 2UL; \
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__len; \
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})
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typedef u32 bug_insn_t;
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#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
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#define __BUG_ENTRY_ADDR RISCV_INT " 1b - 2b"
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#define __BUG_ENTRY_FILE RISCV_INT " %0 - 2b"
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#else
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#define __BUG_ENTRY_ADDR RISCV_PTR " 1b"
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#define __BUG_ENTRY_FILE RISCV_PTR " %0"
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#endif
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define __BUG_ENTRY \
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__BUG_ENTRY_ADDR "\n\t" \
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__BUG_ENTRY_FILE "\n\t" \
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RISCV_SHORT " %1\n\t" \
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RISCV_SHORT " %2"
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#else
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#define __BUG_ENTRY \
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__BUG_ENTRY_ADDR "\n\t" \
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RISCV_SHORT " %2"
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#endif
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#ifdef CONFIG_GENERIC_BUG
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#define __BUG_FLAGS(flags) \
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do { \
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__asm__ __volatile__ ( \
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"1:\n\t" \
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"ebreak\n" \
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".pushsection __bug_table,\"aw\"\n\t" \
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"2:\n\t" \
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__BUG_ENTRY "\n\t" \
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".org 2b + %3\n\t" \
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".popsection" \
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: \
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: "i" (__FILE__), "i" (__LINE__), \
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"i" (flags), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#else /* CONFIG_GENERIC_BUG */
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#define __BUG_FLAGS(flags) do { \
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__asm__ __volatile__ ("ebreak\n"); \
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} while (0)
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#endif /* CONFIG_GENERIC_BUG */
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#define BUG() do { \
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__BUG_FLAGS(0); \
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unreachable(); \
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} while (0)
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#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
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#define HAVE_ARCH_BUG
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#include <asm-generic/bug.h>
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struct pt_regs;
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struct task_struct;
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void die(struct pt_regs *regs, const char *str);
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void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr);
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#endif /* _ASM_RISCV_BUG_H */
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