linux-kernel - [PATCH 0/7] tools/nolibc: autodetect stackprotector availability from compiler

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Date:   Sun, 21 May 2023 11:36:28 +0200
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Willy Tarreau <w@....eu>, "Paul E. McKenney" <paulmck@...nel.org>,
        Shuah Khan <shuah@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-riscv@...ts.infradead.org, llvm@...ts.linux.dev,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 0/7] tools/nolibc: autodetect stackprotector availability
 from compiler

As suggested by Willy it is possible to detect the availability of
stackprotector via preprocessor defines.
Make use of that to simplify the code and interface of nolibc.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
Thomas Weißschuh (7):
      tools/nolibc: fix typo pint -> point
      tools/nolibc: x86_64: disable stack protector for _start
      tools/nolibc: ensure stack protector guard is never zero
      tools/nolibc: add test for __stack_chk_guard initialization
      tools/nolibc: reformat list of headers to be installed
      tools/nolibc: add autodetection for stackprotector support
      tools/nolibc: simplify stackprotector compiler flags

 tools/include/nolibc/Makefile                | 19 +++++++++++++++++--
 tools/include/nolibc/arch-aarch64.h          |  6 +++---
 tools/include/nolibc/arch-arm.h              |  6 +++---
 tools/include/nolibc/arch-i386.h             |  6 +++---
 tools/include/nolibc/arch-loongarch.h        |  6 +++---
 tools/include/nolibc/arch-mips.h             |  6 +++---
 tools/include/nolibc/arch-riscv.h            |  6 +++---
 tools/include/nolibc/arch-x86_64.h           |  8 ++++----
 tools/include/nolibc/arch.h                  |  2 +-
 tools/include/nolibc/compiler.h              | 15 +++++++++++++++
 tools/include/nolibc/stackprotector.h        | 15 ++++++---------
 tools/testing/selftests/nolibc/Makefile      | 13 ++-----------
 tools/testing/selftests/nolibc/nolibc-test.c | 10 +++++++++-
 13 files changed, 72 insertions(+), 46 deletions(-)
---
base-commit: 606343b7478c319cb30291a39ecbceddb42229d6
change-id: 20230521-nolibc-automatic-stack-protector-b4f7fab9e625

Best regards,
-- 
Thomas Weißschuh <linux@...ssschuh.net>