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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 */ 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 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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