arch/x86/include/asm/linkage.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_LINKAGE_H
#define _ASM_X86_LINKAGE_H

#include <linux/stringify.h>
#include <asm/ibt.h>

#undef notrace
#define notrace __attribute__((no_instrument_function))

#ifdef CONFIG_X86_32
#define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0)))
#endif /* CONFIG_X86_32 */

#ifdef __ASSEMBLY__

#if defined(CONFIG_X86_64) || defined(CONFIG_X86_ALIGNMENT_16)
#define __ALIGN		.p2align 4, 0x90
#define __ALIGN_STR	__stringify(__ALIGN)
#endif

#ifdef CONFIG_SLS
#define RET	ret; int3
#else
#define RET	ret
#endif

#else /* __ASSEMBLY__ */

#ifdef CONFIG_SLS
#define ASM_RET	"ret; int3\n\t"
#else
#define ASM_RET	"ret\n\t"
#endif

#endif /* __ASSEMBLY__ */

/* SYM_FUNC_START -- use for global functions */
#define SYM_FUNC_START(name)				\
	SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN)	\
	ENDBR

/* SYM_FUNC_START_NOALIGN -- use for global functions, w/o alignment */
#define SYM_FUNC_START_NOALIGN(name)			\
	SYM_START(name, SYM_L_GLOBAL, SYM_A_NONE)	\
	ENDBR

/* SYM_FUNC_START_LOCAL -- use for local functions */
#define SYM_FUNC_START_LOCAL(name)			\
	SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN)	\
	ENDBR

/* SYM_FUNC_START_LOCAL_NOALIGN -- use for local functions, w/o alignment */
#define SYM_FUNC_START_LOCAL_NOALIGN(name)		\
	SYM_START(name, SYM_L_LOCAL, SYM_A_NONE)	\
	ENDBR

/* SYM_FUNC_START_WEAK -- use for weak functions */
#define SYM_FUNC_START_WEAK(name)			\
	SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN)	\
	ENDBR

/* SYM_FUNC_START_WEAK_NOALIGN -- use for weak functions, w/o alignment */
#define SYM_FUNC_START_WEAK_NOALIGN(name)		\
	SYM_START(name, SYM_L_WEAK, SYM_A_NONE)		\
	ENDBR

#endif /* _ASM_X86_LINKAGE_H */