From: Victor Do Nascimento <victor.donascimento@arm.com>
To: <newlib@sourceware.org>
Cc: <richard.earnshaw@arm.com>,
Victor Do Nascimento <victor.donascimento@arm.com>
Subject: [PATCH v2 0/8] Implement assembly cortex-M PACBTI functionality
Date: Wed, 3 Aug 2022 16:35:16 +0100 [thread overview]
Message-ID: <20220803153524.20631-1-victor.donascimento@arm.com> (raw)
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>
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 | 54 ++++++++++++--
newlib/libc/machine/arm/aeabi_memset-thumb2.S | 47 +++++++++++-
newlib/libc/machine/arm/memchr.S | 55 ++++++++++++--
newlib/libc/machine/arm/memcpy-armv7m.S | 74 +++++++++++++++++--
newlib/libc/machine/arm/pacbti.h | 64 ++++++++++++++++
newlib/libc/machine/arm/setjmp.S | 33 ++++++++-
newlib/libc/machine/arm/strcmp-arm-tiny.S | 7 +-
newlib/libc/machine/arm/strcmp-armv7.S | 45 ++++++++---
newlib/libc/machine/arm/strcmp-armv7m.S | 36 +++++++--
newlib/libc/machine/arm/strlen-armv7.S | 53 ++++++++++++-
newlib/libc/machine/arm/strlen-thumb2-Os.S | 13 +++-
11 files changed, 435 insertions(+), 46 deletions(-)
create mode 100644 newlib/libc/machine/arm/pacbti.h
--
2.36.1
next reply other threads:[~2022-08-03 15:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-03 15:35 Victor Do Nascimento [this message]
2022-08-03 15:35 ` [PATCH v2 1/8] newlib: libc: define M-profile PACBTI-enablement macros Victor Do Nascimento
2022-08-04 15:19 ` Richard Earnshaw
2022-08-05 9:21 ` Victor L. Do Nascimento
2022-08-16 16:11 ` Victor L. Do Nascimento
2022-08-18 16:28 ` Victor L. Do Nascimento
2022-08-03 15:35 ` [PATCH v2 2/8] newlib: libc: strcmp M-profile PACBTI-enablement Victor Do Nascimento
2022-08-04 15:48 ` Richard Earnshaw
2022-08-05 10:51 ` Victor L. Do Nascimento
2022-08-05 14:34 ` Richard Earnshaw
2022-08-05 14:58 ` Victor L. Do Nascimento
2022-08-05 15:15 ` Richard Earnshaw
2022-08-03 15:35 ` [PATCH v2 3/8] newlib: libc: strlen " Victor Do Nascimento
2022-08-03 15:35 ` [PATCH v2 4/8] newlib: libc: memchr " Victor Do Nascimento
2022-08-03 15:35 ` [PATCH v2 5/8] newlib: libc: memcpy " Victor Do Nascimento
2022-08-03 15:35 ` [PATCH v2 6/8] newlib: libc: setjmp/longjmp " Victor Do Nascimento
2022-08-03 15:35 ` [PATCH v2 7/8] newlib: libc: aeabi_memmove " Victor Do Nascimento
2022-08-03 15:35 ` [PATCH v2 8/8] newlib: libc: aeabi_memset " Victor Do Nascimento
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