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add support for clang Control Flow Integrity (CFI)

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This change adds the CONFIG_CFI_CLANG option, CFI error handling,
and a faster look-up table for cross module CFI checks.

Bug: 67506682
Change-Id: Ic009f0a629b552a0eb16e6d89808c7029e91447d
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen 2017-05-11 15:03:36 -07:00
parent b13cf8585d
commit 00a195e7c0
13 changed files with 444 additions and 2 deletions
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4
include/linux/compiler.h
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@ -455,6 +455,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s
#define __norecordmcount
#endif
#ifndef __nocfi
#define __nocfi
#endif
/*
* Assume alignment of return value.
*/