diff options
Diffstat (limited to 'arch/x86/include/asm/linkage.h')
| -rw-r--r-- | arch/x86/include/asm/linkage.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/x86/include/asm/linkage.h b/arch/x86/include/asm/linkage.h new file mode 100644 index 000000000..5000cf59b --- /dev/null +++ b/arch/x86/include/asm/linkage.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_LINKAGE_H +#define _ASM_X86_LINKAGE_H + +#include <linux/stringify.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 + +#if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) +#define RET jmp __x86_return_thunk +#else /* CONFIG_RETPOLINE */ +#ifdef CONFIG_SLS +#define RET ret; int3 +#else +#define RET ret +#endif +#endif /* CONFIG_RETPOLINE */ + +#else /* __ASSEMBLY__ */ + +#if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) +#define ASM_RET "jmp __x86_return_thunk\n\t" +#else /* CONFIG_RETPOLINE */ +#ifdef CONFIG_SLS +#define ASM_RET "ret; int3\n\t" +#else +#define ASM_RET "ret\n\t" +#endif +#endif /* CONFIG_RETPOLINE */ + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_X86_LINKAGE_H */ + |