From: "Victor L. Do Nascimento" <victor.donascimento@arm.com>
To: <newlib@sourceware.org>
Cc: <Richard.Earnshaw@arm.com>
Subject: [PATCH v3 0/8] Implement assembly cortex-M PACBTI functionality
Date: Wed, 24 Aug 2022 11:18:17 +0100 [thread overview]
Message-ID: <yw8jedx62bdi.fsf@arm.com> (raw)
Hi all,
This patch series modifies hand-written assembly files for Arm targets,
conditionally enabling branch target identification as well as address
return signature and verification based on Armv8.1-M Pointer
Authentication [1] using ACLE feature test macros at compile-time [2].
The incorportaion of PACBTI functionality in function prologues/
epilogues is dictated by the arguments passed to the
`-mbranch-protection' flag at the time of Newlib compilation.
Regression tested on arm-none-eabi with and without MVE extension and
for Newlib and Newlib-nano.
[1]
<https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/armv8-1-m-pointer-authentication-and-branch-target-identification-extension>
[2] <https://developer.arm.com/documentation/101028/0012/5--Feature-test-macros>
Regards,
Victor
Victor Do Nascimento (8):
newlib: libc: define M-profile PACBTI-enablement macros
newlib: libc: strcmp M-profile PACBTI-enablement
newlib: libc: strlen M-profile PACBTI-enablement
newlib: libc: memchr M-profile PACBTI-enablement
newlib: libc: memcpy M-profile PACBTI-enablement
newlib: libc: setjmp/longjmp M-profile PACBTI-enablement
newlib: libc: aeabi_memmove M-profile PACBTI-enablement
newlib: libc: aeabi_memset M-profile PACBTI-enablement
.../libc/machine/arm/aeabi_memmove-thumb2.S | 15 +-
newlib/libc/machine/arm/aeabi_memset-thumb2.S | 12 +-
newlib/libc/machine/arm/arm_asm.h | 130 ++++++++++++++++++
newlib/libc/machine/arm/memchr.S | 34 ++++-
newlib/libc/machine/arm/memcpy-armv7m.S | 35 +++--
newlib/libc/machine/arm/setjmp.S | 33 ++++-
newlib/libc/machine/arm/strcmp-arm-tiny.S | 8 +-
newlib/libc/machine/arm/strcmp-armv7.S | 42 ++++--
newlib/libc/machine/arm/strcmp-armv7m.S | 24 ++--
newlib/libc/machine/arm/strlen-armv7.S | 16 ++-
newlib/libc/machine/arm/strlen-thumb2-Os.S | 14 +-
11 files changed, 301 insertions(+), 62 deletions(-)
--
2.36.1
next reply other threads:[~2022-08-24 10:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-24 10:18 Victor L. Do Nascimento [this message]
2022-08-24 10:27 ` [PATCH v3 1/8] newlib: libc: define M-profile PACBTI-enablement macros Victor L. Do Nascimento
2022-08-24 10:30 ` [PATCH v3 2/8] newlib: libc: strcmp M-profile PACBTI-enablement Victor L. Do Nascimento
2022-08-24 10:33 ` [PATCH v3 3/8] newlib: libc: strlen " Victor L. Do Nascimento
2022-08-24 10:34 ` [PATCH v3 4/8] newlib: libc: memchr " Victor L. Do Nascimento
2022-08-24 10:36 ` [PATCH v3 5/8] newlib: libc: memcpy " Victor L. Do Nascimento
2022-08-24 10:38 ` [PATCH v3 6/8] newlib: libc: setjmp/longjmp " Victor L. Do Nascimento
2022-08-24 10:40 ` [PATCH v3 7/8] newlib: libc: aeabi_memmove " Victor L. Do Nascimento
2022-08-24 10:41 ` [PATCH v3 8/8] newlib: libc: aeabi_memset " Victor L. Do Nascimento
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