162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */
262306a36Sopenharmony_ci
362306a36Sopenharmony_ci#ifndef __ASM_CSKY_JUMP_LABEL_H
462306a36Sopenharmony_ci#define __ASM_CSKY_JUMP_LABEL_H
562306a36Sopenharmony_ci
662306a36Sopenharmony_ci#ifndef __ASSEMBLY__
762306a36Sopenharmony_ci
862306a36Sopenharmony_ci#include <linux/types.h>
962306a36Sopenharmony_ci
1062306a36Sopenharmony_ci#define JUMP_LABEL_NOP_SIZE 4
1162306a36Sopenharmony_ci
1262306a36Sopenharmony_cistatic __always_inline bool arch_static_branch(struct static_key *key,
1362306a36Sopenharmony_ci					       bool branch)
1462306a36Sopenharmony_ci{
1562306a36Sopenharmony_ci	asm goto(
1662306a36Sopenharmony_ci		"1:	nop32					\n"
1762306a36Sopenharmony_ci		"	.pushsection	__jump_table, \"aw\"	\n"
1862306a36Sopenharmony_ci		"	.align		2			\n"
1962306a36Sopenharmony_ci		"	.long		1b - ., %l[label] - .	\n"
2062306a36Sopenharmony_ci		"	.long		%0 - .			\n"
2162306a36Sopenharmony_ci		"	.popsection				\n"
2262306a36Sopenharmony_ci		:  :  "i"(&((char *)key)[branch]) :  : label);
2362306a36Sopenharmony_ci
2462306a36Sopenharmony_ci	return false;
2562306a36Sopenharmony_cilabel:
2662306a36Sopenharmony_ci	return true;
2762306a36Sopenharmony_ci}
2862306a36Sopenharmony_ci
2962306a36Sopenharmony_cistatic __always_inline bool arch_static_branch_jump(struct static_key *key,
3062306a36Sopenharmony_ci						    bool branch)
3162306a36Sopenharmony_ci{
3262306a36Sopenharmony_ci	asm goto(
3362306a36Sopenharmony_ci		"1:	bsr32		%l[label]		\n"
3462306a36Sopenharmony_ci		"	.pushsection	__jump_table, \"aw\"	\n"
3562306a36Sopenharmony_ci		"	.align		2			\n"
3662306a36Sopenharmony_ci		"	.long		1b - ., %l[label] - .	\n"
3762306a36Sopenharmony_ci		"	.long		%0 - .			\n"
3862306a36Sopenharmony_ci		"	.popsection				\n"
3962306a36Sopenharmony_ci		:  :  "i"(&((char *)key)[branch]) :  : label);
4062306a36Sopenharmony_ci
4162306a36Sopenharmony_ci	return false;
4262306a36Sopenharmony_cilabel:
4362306a36Sopenharmony_ci	return true;
4462306a36Sopenharmony_ci}
4562306a36Sopenharmony_ci
4662306a36Sopenharmony_cienum jump_label_type;
4762306a36Sopenharmony_civoid arch_jump_label_transform_static(struct jump_entry *entry,
4862306a36Sopenharmony_ci				      enum jump_label_type type);
4962306a36Sopenharmony_ci#define arch_jump_label_transform_static arch_jump_label_transform_static
5062306a36Sopenharmony_ci
5162306a36Sopenharmony_ci#endif  /* __ASSEMBLY__ */
5262306a36Sopenharmony_ci#endif	/* __ASM_CSKY_JUMP_LABEL_H */
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