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0004-Part-4.-Update-x86-backend-to-enable-Intel-CET

From: "Tsimbalist, Igor V" <igor dot v dot tsimbalist at intel dot com>
To: "'gcc-patches at gcc dot gnu dot org'" <gcc-patches at gcc dot gnu dot org>
Cc: "Tsimbalist, Igor V" <igor dot v dot tsimbalist at intel dot com>
Date: Tue, 1 Aug 2017 08:56:40 +0000
Subject: 0004-Part-4.-Update-x86-backend-to-enable-Intel-CET
Authentication-results: sourceware.org; auth=none
Dlp-product: dlpe-windows
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Dlp-version: 10.0.102.7

Part#4. Update x86 backend to enable Intel CET.

All platforms except i386 will report the error and do no
instrumentation with -finstrument-control-flow option. i386 will provide
the implementation based on a specification published by Intel for a new
technology called Control-flow Enforcement Technology (CET). The spec is
available at

https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-enforcement-technology-preview.pdf

The implementation in this patch:
1) enables Control-flow Enforcement Technology (CET), published by
Intel. This part introduces i386 specific options -mcet, -mibt and
-mshstk, new instructions and intrinsics;

2) provides support for -finstrument-control-flow option by doing needed
code instrumentation, which is based on CET features.

Attachment: 0004-Part-4.-Update-x86-backend-to-enable-Intel-CET.PATCH
Description: 0004-Part-4.-Update-x86-backend-to-enable-Intel-CET.PATCH

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