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/* 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(flags)				\
do {							\
	__asm__ __volatile__ (				\
		"1:\t.short %O0\n"			\
		 _EMIT_BUG_ENTRY			\
		 :					\
		 : "n" (TRAPA_BUG_OPCODE),		\
		   "i" (__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 */

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Name Type Size Permission Actions
Kbuild File 467 B 0644
adc.h File 253 B 0644
addrspace.h File 2.03 KB 0644
alignment.h File 654 B 0644
asm-offsets.h File 35 B 0644
atomic-grb.h File 2.6 KB 0644
atomic-irq.h File 1.63 KB 0644
atomic-llsc.h File 2.12 KB 0644
atomic.h File 1.78 KB 0644
barrier.h File 1.52 KB 0644
bitops-cas.h File 1.73 KB 0644
bitops-grb.h File 6.21 KB 0644
bitops-llsc.h File 2.79 KB 0644
bitops-op32.h File 3.78 KB 0644
bitops.h File 2.38 KB 0644
bl_bit.h File 216 B 0644
bl_bit_32.h File 639 B 0644
bl_bit_64.h File 979 B 0644
bug.h File 2.77 KB 0644
bugs.h File 1.38 KB 0644
cache.h File 1.2 KB 0644
cache_insns.h File 242 B 0644
cache_insns_32.h File 642 B 0644
cache_insns_64.h File 839 B 0644
cacheflush.h File 3.58 KB 0644
checksum.h File 140 B 0644
checksum_32.h File 5.21 KB 0644
clock.h File 436 B 0644
cmpxchg-cas.h File 549 B 0644
cmpxchg-grb.h File 2.8 KB 0644
cmpxchg-irq.h File 1.04 KB 0644
cmpxchg-llsc.h File 1.06 KB 0644
cmpxchg-xchg.h File 1.33 KB 0644
cmpxchg.h File 1.77 KB 0644
device.h File 450 B 0644
dma-mapping.h File 694 B 0644
dma-register.h File 1.8 KB 0644
dma.h File 3.74 KB 0644
dmabrg.h File 536 B 0644
dwarf.h File 9.8 KB 0644
elf.h File 7.28 KB 0644
entry-macros.S File 1.85 KB 0644
extable.h File 227 B 0644
fb.h File 375 B 0644
fixmap.h File 2.92 KB 0644
flat.h File 1.23 KB 0644
fpu.h File 1.77 KB 0644
freq.h File 472 B 0644
ftrace.h File 1.11 KB 0644
futex-cas.h File 728 B 0644
futex-irq.h File 482 B 0644
futex-llsc.h File 870 B 0644
futex.h File 1.5 KB 0644
gpio.h File 1017 B 0644
hardirq.h File 440 B 0644
hd64461.h File 11.79 KB 0644
heartbeat.h File 383 B 0644
hugetlb.h File 1.96 KB 0644
hw_breakpoint.h File 1.88 KB 0644
hw_irq.h File 915 B 0644
i2c-sh7760.h File 406 B 0644
io.h File 11.33 KB 0644
io_generic.h File 661 B 0644
io_noioport.h File 1.09 KB 0644
io_trapped.h File 1.44 KB 0644
irq.h File 1.68 KB 0644
irqflags.h File 226 B 0644
kdebug.h File 406 B 0644
kexec.h File 2.61 KB 0644
kgdb.h File 851 B 0644
kmap_types.h File 265 B 0644
kprobes.h File 1.51 KB 0644
linkage.h File 154 B 0644
machvec.h File 939 B 0644
mmu.h File 2.18 KB 0644
mmu_context.h File 4.44 KB 0644
mmu_context_32.h File 1.28 KB 0644
mmu_context_64.h File 1.97 KB 0644
mmzone.h File 1.1 KB 0644
module.h File 1005 B 0644
page.h File 6.06 KB 0644
pci.h File 3.19 KB 0644
perf_event.h File 797 B 0644
pgalloc.h File 1.86 KB 0644
pgtable-2level.h File 598 B 0644
pgtable-3level.h File 1.54 KB 0644
pgtable.h File 4 KB 0644
pgtable_32.h File 16.37 KB 0644
pgtable_64.h File 11.32 KB 0644
posix_types.h File 146 B 0644
processor.h File 4.41 KB 0644
processor_32.h File 4.67 KB 0644
processor_64.h File 5.54 KB 0644
ptrace.h File 3.39 KB 0644
ptrace_32.h File 307 B 0644
ptrace_64.h File 312 B 0644
push-switch.h File 755 B 0644
reboot.h File 472 B 0644
romimage-macros.h File 1.1 KB 0644
rtc.h File 383 B 0644
seccomp.h File 280 B 0644
sections.h File 311 B 0644
segment.h File 879 B 0644
setup.h File 725 B 0644
sfp-machine.h File 3.43 KB 0644
sh7760fb.h File 5.61 KB 0644
sh_bios.h File 743 B 0644
shmparam.h File 629 B 0644
siu.h File 539 B 0644
smc37c93x.h File 5.56 KB 0644
smp-ops.h File 1012 B 0644
smp.h File 1.83 KB 0644
sparsemem.h File 443 B 0644
spi.h File 265 B 0644
spinlock-cas.h File 2.09 KB 0644
spinlock-llsc.h File 4.13 KB 0644
spinlock.h File 578 B 0644
spinlock_types.h File 463 B 0644
sram.h File 670 B 0644
stackprotector.h File 711 B 0644
stacktrace.h File 606 B 0644
string.h File 131 B 0644
string_32.h File 2.66 KB 0644
string_64.h File 499 B 0644
suspend.h File 2.52 KB 0644
switch_to.h File 492 B 0644
switch_to_32.h File 3.55 KB 0644
switch_to_64.h File 968 B 0644
syscall.h File 267 B 0644
syscall_32.h File 2.42 KB 0644
syscall_64.h File 1.79 KB 0644
syscalls.h File 564 B 0644
syscalls_32.h File 1022 B 0644
syscalls_64.h File 441 B 0644
thread_info.h File 5.32 KB 0644
timex.h File 637 B 0644
tlb.h File 4.12 KB 0644
tlb_64.h File 2.08 KB 0644
tlbflush.h File 1.77 KB 0644
topology.h File 645 B 0644
traps.h File 487 B 0644
traps_32.h File 1.31 KB 0644
traps_64.h File 851 B 0644
types.h File 411 B 0644
uaccess.h File 4.83 KB 0644
uaccess_32.h File 3.77 KB 0644
uaccess_64.h File 2.2 KB 0644
unaligned-sh4a.h File 4.51 KB 0644
unaligned.h File 359 B 0644
uncached.h File 1.34 KB 0644
unistd.h File 952 B 0644
unwinder.h File 856 B 0644
user.h File 2.52 KB 0644
vga.h File 98 B 0644
vmlinux.lds.h File 558 B 0644
watchdog.h File 4.14 KB 0644
word-at-a-time.h File 1.29 KB 0644