linux-kernel - [PATCH v2 00/15] tools/nolibc: improve LLVM/clang support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240807-nolibc-llvm-v2-0-c20f2f5fc7c2@weissschuh.net>
Date: Wed, 07 Aug 2024 23:51:36 +0200
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>, 
 Shuah Khan <skhan@...uxfoundation.org>
Subject: [PATCH v2 00/15] tools/nolibc: improve LLVM/clang support

The current support for LLVM and clang in nolibc and its testsuite is
very limited.

* Various architectures plain do not compile
* The user *has* to specify "-Os" otherwise the program crashes
* Cross-compilation of the tests does not work
* Using clang is not wired up in run-tests.sh

This series extends this support.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
Changes in v2:
- Add support for all architectures
  - powerpc: "selftests/nolibc: don't use libgcc when building with clang"
  - mips: "tools/nolibc: mips: load current function to $t9"
  - s390: "selftests/nolibc: use correct clang target for s390/powerz"
- Expand commit messages
- Use __nolibc_ prefix for custom macros
- Link to v1: https://lore.kernel.org/r/20240728-nolibc-llvm-v1-0-bc384269bc35@weissschuh.net

---
Thomas Weißschuh (15):
      tools/nolibc: arm: use clang-compatible asm syntax
      tools/nolibc: mips: load current function to $t9
      tools/nolibc: powerpc: limit stack-protector workaround to GCC
      tools/nolibc: compiler: introduce __nolibc_has_attribute()
      tools/nolibc: move entrypoint specifics to compiler.h
      tools/nolibc: compiler: use attribute((naked)) if available
      selftests/nolibc: report failure if no testcase passed
      selftests/nolibc: avoid passing NULL to printf("%s")
      selftests/nolibc: determine $(srctree) first
      selftests/nolibc: add support for LLVM= parameter
      selftests/nolibc: add cc-option compatible with clang cross builds
      selftests/nolibc: run-tests.sh: avoid overwriting CFLAGS_EXTRA
      selftests/nolibc: don't use libgcc when building with clang
      selftests/nolibc: use correct clang target for s390/powerz
      selftests/nolibc: run-tests.sh: allow building through LLVM

 tools/include/nolibc/arch-aarch64.h          |  4 +--
 tools/include/nolibc/arch-arm.h              |  8 +++---
 tools/include/nolibc/arch-i386.h             |  4 +--
 tools/include/nolibc/arch-loongarch.h        |  4 +--
 tools/include/nolibc/arch-mips.h             |  8 ++++--
 tools/include/nolibc/arch-powerpc.h          |  6 ++--
 tools/include/nolibc/arch-riscv.h            |  4 +--
 tools/include/nolibc/arch-s390.h             |  4 +--
 tools/include/nolibc/arch-x86_64.h           |  4 +--
 tools/include/nolibc/compiler.h              | 24 +++++++++++-----
 tools/testing/selftests/nolibc/Makefile      | 41 +++++++++++++++++++---------
 tools/testing/selftests/nolibc/nolibc-test.c |  4 +--
 tools/testing/selftests/nolibc/run-tests.sh  | 16 ++++++++---
 13 files changed, 83 insertions(+), 48 deletions(-)
---
base-commit: ae1f550efc11eaf1496c431d9c6e784cb49124c5
change-id: 20240727-nolibc-llvm-3fad68590d4c

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