| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _ASM_X86_LINKAGE_H |
| 3 | #define _ASM_X86_LINKAGE_H |
| 4 | |
| 5 | #include <linux/stringify.h> |
| 6 | |
| 7 | #undef notrace |
| 8 | #define notrace __attribute__((no_instrument_function)) |
| 9 | |
| 10 | #ifdef CONFIG_X86_32 |
| 11 | #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0))) |
| 12 | #endif /* CONFIG_X86_32 */ |
| 13 | |
| 14 | #ifdef __ASSEMBLY__ |
| 15 | |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 16 | #if defined(CONFIG_X86_64) || defined(CONFIG_X86_ALIGNMENT_16) |
| 17 | #define __ALIGN .p2align 4, 0x90 |
| 18 | #define __ALIGN_STR __stringify(__ALIGN) |
| 19 | #endif |
| 20 | |
| Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame^] | 21 | #if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) |
| 22 | #define RET jmp __x86_return_thunk |
| 23 | #else /* CONFIG_RETPOLINE */ |
| 24 | #ifdef CONFIG_SLS |
| 25 | #define RET ret; int3 |
| 26 | #else |
| 27 | #define RET ret |
| 28 | #endif |
| 29 | #endif /* CONFIG_RETPOLINE */ |
| 30 | |
| 31 | #else /* __ASSEMBLY__ */ |
| 32 | |
| 33 | #if defined(CONFIG_RETHUNK) && !defined(__DISABLE_EXPORTS) && !defined(BUILD_VDSO) |
| 34 | #define ASM_RET "jmp __x86_return_thunk\n\t" |
| 35 | #else /* CONFIG_RETPOLINE */ |
| 36 | #ifdef CONFIG_SLS |
| 37 | #define ASM_RET "ret; int3\n\t" |
| 38 | #else |
| 39 | #define ASM_RET "ret\n\t" |
| 40 | #endif |
| 41 | #endif /* CONFIG_RETPOLINE */ |
| 42 | |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 43 | #endif /* __ASSEMBLY__ */ |
| 44 | |
| 45 | #endif /* _ASM_X86_LINKAGE_H */ |
| 46 | |