/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_SH_BUG_H#define __ASM_SH_BUG_H #include <linux/linkage.h> #define TRAPA_BUG_OPCODE	0xc33e	/* trapa #0x3e */#define BUGFLAG_UNWINDER	(1 << 1) #ifdef CONFIG_GENERIC_BUG#define HAVE_ARCH_BUG#define HAVE_ARCH_WARN_ON /** * _EMIT_BUG_ENTRY * %1 - __FILE__ * %2 - __LINE__ * %3 - trap type * %4 - sizeof(struct bug_entry) * * The trapa opcode itself sits in %0. * The %O notation is used to avoid # generation. * * The offending file and line are encoded in the __bug_table section. */#ifdef CONFIG_DEBUG_BUGVERBOSE#define _EMIT_BUG_ENTRY				\	"\t.pushsection __bug_table,\"aw\"\n"	\	"2:\t.long 1b, %O1\n"			\	"\t.short %O2, %O3\n"			\	"\t.org 2b+%O4\n"			\	"\t.popsection\n"#else#define _EMIT_BUG_ENTRY				\	"\t.pushsection __bug_table,\"aw\"\n"	\	"2:\t.long 1b\n"			\	"\t.short %O3\n"			\	"\t.org 2b+%O4\n"			\	"\t.popsection\n"#endif #define BUG()						\do {							\	__asm__ __volatile__ (				\		"1:\t.short %O0\n"			\		_EMIT_BUG_ENTRY				\		 :					\		 : "n" (TRAPA_BUG_OPCODE),		\		   "i" (__FILE__),			\		   "i" (__LINE__), "i" (0),		\		   "i" (sizeof(struct bug_entry)));	\	unreachable();					\} while (0) #define __WARN_FLAGS(cond_str, flags)			\do {							\	__asm__ __volatile__ (				\		"1:\t.short %O0\n"			\		 _EMIT_BUG_ENTRY			\		 :					\		 : "n" (TRAPA_BUG_OPCODE),		\		   "i" (WARN_CONDITION_STR(cond_str) __FILE__),	\		   "i" (__LINE__),			\		   "i" (BUGFLAG_WARNING|(flags)),	\		   "i" (sizeof(struct bug_entry)));	\} while (0) #define WARN_ON(x) ({						\	int __ret_warn_on = !!(x);				\	if (__builtin_constant_p(__ret_warn_on)) {		\		if (__ret_warn_on)				\			__WARN();				\	} else {						\		if (unlikely(__ret_warn_on))			\			__WARN();				\	}							\	unlikely(__ret_warn_on);				\}) #define UNWINDER_BUG()					\do {							\	__asm__ __volatile__ (				\		"1:\t.short %O0\n"			\		_EMIT_BUG_ENTRY				\		 :					\		 : "n" (TRAPA_BUG_OPCODE),		\		   "i" (__FILE__),			\		   "i" (__LINE__),			\		   "i" (BUGFLAG_UNWINDER),		\		   "i" (sizeof(struct bug_entry)));	\} while (0) #define UNWINDER_BUG_ON(x) ({					\	int __ret_unwinder_on = !!(x);				\	if (__builtin_constant_p(__ret_unwinder_on)) {		\		if (__ret_unwinder_on)				\			UNWINDER_BUG();				\	} else {						\		if (unlikely(__ret_unwinder_on))		\			UNWINDER_BUG();				\	}							\	unlikely(__ret_unwinder_on);				\}) #else #define UNWINDER_BUG	BUG#define UNWINDER_BUG_ON	BUG_ON #endif /* CONFIG_GENERIC_BUG */ #include <asm-generic/bug.h> struct pt_regs; /* arch/sh/kernel/traps.c */extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));extern void die_if_kernel(const char *str, struct pt_regs *regs, long err);extern void die_if_no_fixup(const char *str, struct pt_regs *regs, long err); #endif /* __ASM_SH_BUG_H */