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authorSzabolcs Nagy <szabolcs.nagy@arm.com>2020-04-29 11:49:20 +0100
committerSzabolcs Nagy <szabolcs.nagy@arm.com>2020-06-12 14:34:39 +0100
commita7833d6a29f738d9fb1ca047f79baecd50ede477 (patch)
tree932c8ff93b2f159d419b8d95de534e475f646513 /elf/ifuncmain9pie.c
parentf69c4d0439122c008a2f6cb4bc64dbf44fe0a306 (diff)
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aarch64: Add pac-ret support to assembly files
Use return address signing in assembly files for functions that save
LR when pac-ret is enabled in the compiler.

The GNU property note for PAC-RET is not meaningful to the dynamic
linker so it is not strictly required, but it may be used to track
the security property of binaries. (The PAC-RET property is only set
if BTI is set too because BTI implies working GNU property support.)

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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