clang 19.0.0git
cet.h
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1/*===------ cet.h -Control-flow Enforcement Technology feature ------------===
2 * Add x86 feature with IBT and/or SHSTK bits to ELF program property if they
3 * are enabled. Otherwise, contents in this header file are unused. This file
4 * is mainly design for assembly source code which want to enable CET.
5 *
6 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
7 * See https://llvm.org/LICENSE.txt for license information.
8 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
9 *
10 *===-----------------------------------------------------------------------===
11 */
12#ifndef __CET_H
13#define __CET_H
14
15#ifdef __ASSEMBLER__
16
17#ifndef __CET__
18# define _CET_ENDBR
19#endif
20
21#ifdef __CET__
22
23# ifdef __LP64__
24# if __CET__ & 0x1
25# define _CET_ENDBR endbr64
26# else
27# define _CET_ENDBR
28# endif
29# else
30# if __CET__ & 0x1
31# define _CET_ENDBR endbr32
32# else
33# define _CET_ENDBR
34# endif
35# endif
36
37
38# ifdef __LP64__
39# define __PROPERTY_ALIGN 3
40# else
41# define __PROPERTY_ALIGN 2
42# endif
43
44 .pushsection ".note.gnu.property", "a"
45 .p2align __PROPERTY_ALIGN
46 .long 1f - 0f /* name length. */
47 .long 4f - 1f /* data length. */
48 /* NT_GNU_PROPERTY_TYPE_0. */
49 .long 5 /* note type. */
500:
51 .asciz "GNU" /* vendor name. */
521:
53 .p2align __PROPERTY_ALIGN
54 /* GNU_PROPERTY_X86_FEATURE_1_AND. */
55 .long 0xc0000002 /* pr_type. */
56 .long 3f - 2f /* pr_datasz. */
572:
58 /* GNU_PROPERTY_X86_FEATURE_1_XXX. */
59 .long __CET__
603:
61 .p2align __PROPERTY_ALIGN
624:
63 .popsection
64#endif
65#endif
66#endif
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