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67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
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/*===------ cet.h -Control-flow Enforcement Technology feature ------------===
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* Add x86 feature with IBT and/or SHSTK bits to ELF program property if they
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* are enabled. Otherwise, contents in this header file are unused. This file
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* is mainly design for assembly source code which want to enable CET.
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __CET_H
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#define __CET_H
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#ifdef __ASSEMBLER__
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#ifndef __CET__
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# define _CET_ENDBR
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#endif
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#ifdef __CET__
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# ifdef __LP64__
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# if __CET__ & 0x1
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# define _CET_ENDBR endbr64
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# else
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# define _CET_ENDBR
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# endif
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# else
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# if __CET__ & 0x1
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# define _CET_ENDBR endbr32
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# else
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# define _CET_ENDBR
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# endif
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# endif
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# ifdef __LP64__
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# define __PROPERTY_ALIGN 3
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# else
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# define __PROPERTY_ALIGN 2
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# endif
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.pushsection ".note.gnu.property", "a"
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.p2align __PROPERTY_ALIGN
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.long 1f - 0f /* name length. */
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.long 4f - 1f /* data length. */
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/* NT_GNU_PROPERTY_TYPE_0. */
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.long 5 /* note type. */
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0:
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.asciz "GNU" /* vendor name. */
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1:
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.p2align __PROPERTY_ALIGN
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/* GNU_PROPERTY_X86_FEATURE_1_AND. */
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.long 0xc0000002 /* pr_type. */
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.long 3f - 2f /* pr_datasz. */
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2:
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/* GNU_PROPERTY_X86_FEATURE_1_XXX. */
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.long __CET__
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3:
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.p2align __PROPERTY_ALIGN
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4:
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.popsection
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#endif
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#endif
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#endif
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