[PATCH v2 00/12] tools/nolibc: shrink arch support

From: Zhangjin Wu
Date: Sat Jul 08 2023 - 11:25:57 EST


Hi, Willy

This is v2 of the "tools/nolibc: shrink arch support" [1].

This v2 has no core code logic change, but applies some suggestions from
Willy and Thomas, one is using post-whitespaces instead of post-tab,
another is restructuring the arch support directory and files [2].

Like musl, this v2 creates <ARCH> directory for every arch and splits
the old arch-<ARCH>.h to <ARCH>/{crt.h, sys.h} and at the same time,
splits the old arch.h to crt_arch.h and sys_arch.h. at last, only need
to include crt_arch.h in crt.h and sys_arch.h in sys.h respectively, and
no longer need to include arch.h in the other common headers:

crt.h <-- crt_arch.h <-- <ARCH>/crt.h
sys.h <-- sys_arch.h <-- <ARCH>/sys.h

It is based on the 20230705-nolibc-series2 branch of nolibc repo [3]. It
should be applied after the v6 __sysret helper series [4] and the v4
min config support series [5].

Here is the test report for all of the supported architectures:

arch/board | result
------------|------------
arm/vexpress-a9 | 142 test(s) passed, 1 skipped, 0 failed.
arm/virt | 142 test(s) passed, 1 skipped, 0 failed.
aarch64/virt | 142 test(s) passed, 1 skipped, 0 failed.
ppc/g3beige | not supported
ppc/ppce500 | not supported
i386/pc | 142 test(s) passed, 1 skipped, 0 failed.
x86_64/pc | 142 test(s) passed, 1 skipped, 0 failed.
mipsel/malta | 142 test(s) passed, 1 skipped, 0 failed.
loongarch64/virt | 142 test(s) passed, 1 skipped, 0 failed.
riscv64/virt | 142 test(s) passed, 1 skipped, 0 failed.
riscv32/virt | 0 test(s) passed, 0 skipped, 0 failed.
s390x/s390-ccw-virtio | 142 test(s) passed, 1 skipped, 0 failed.

Changes from v1 --> v2:

* tools/nolibc: rename arch-<ARCH>.h to <ARCH>/arch.h
tools/nolibc: split arch.h to crt.h and sys.h

Restruct the arch support directory and files.

Fix up the errors reported by scripts/checkpatch.pl.

* tools/nolibc: sys.h: remove the old sys_stat support

Rebase on the new arch support directory and files.

* tools/nolibc: crt.h: add _start_c

Move #include "compiler.h" in the common crt.h too.

* tools/nolibc: arm/crt.h: shrink _start with _start_c
tools/nolibc: aarch64/crt.h: shrink _start with _start_c
tools/nolibc: i386/crt.h: shrink _start with _start_c
tools/nolibc: x86_64/crt.h: shrink _start with _start_c
tools/nolibc: mips/crt.h: shrink _start with _start_c
tools/nolibc: loongarch/crt.h: shrink _start with _start_c
tools/nolibc: riscv/crt.h: shrink _start with _start_c
tools/nolibc: s390/crt.h: shrink _start with _start_c

Rebase on the new arch support directory and files.

Use post-whitespaces instead of post-tab.

Best regards,
Zhangjin
---
[1]: https://lore.kernel.org/lkml/cover.1687976753.git.falcon@xxxxxxxxxxx/
[2]: https://lore.kernel.org/lkml/20230703145500.500460-1-falcon@xxxxxxxxxxx/
[3]: https://git.kernel.org/pub/scm/linux/kernel/git/wtarreau/nolibc.git
[4]: https://lore.kernel.org/lkml/cover.1688739492.git.falcon@xxxxxxxxxxx/
[5]: https://lore.kernel.org/lkml/cover.1688750763.git.falcon@xxxxxxxxxxx/

Zhangjin Wu (12):
tools/nolibc: rename arch-<ARCH>.h to <ARCH>/arch.h
tools/nolibc: split arch.h to crt.h and sys.h
tools/nolibc: sys.h: remove the old sys_stat support
tools/nolibc: crt.h: add _start_c
tools/nolibc: arm/crt.h: shrink _start with _start_c
tools/nolibc: aarch64/crt.h: shrink _start with _start_c
tools/nolibc: i386/crt.h: shrink _start with _start_c
tools/nolibc: x86_64/crt.h: shrink _start with _start_c
tools/nolibc: mips/crt.h: shrink _start with _start_c
tools/nolibc: loongarch/crt.h: shrink _start with _start_c
tools/nolibc: riscv/crt.h: shrink _start with _start_c
tools/nolibc: s390/crt.h: shrink _start with _start_c

tools/include/nolibc/Makefile | 36 ++++---
tools/include/nolibc/aarch64/crt.h | 24 +++++
.../nolibc/{arch-aarch64.h => aarch64/sys.h} | 68 +------------
tools/include/nolibc/arch.h | 36 -------
tools/include/nolibc/arm/crt.h | 25 +++++
.../include/nolibc/{arch-arm.h => arm/sys.h} | 96 +------------------
tools/include/nolibc/crt.h | 60 ++++++++++++
tools/include/nolibc/crt_arch.h | 32 +++++++
tools/include/nolibc/i386/crt.h | 33 +++++++
.../nolibc/{arch-i386.h => i386/sys.h} | 77 +--------------
tools/include/nolibc/loongarch/crt.h | 30 ++++++
.../{arch-loongarch.h => loongarch/sys.h} | 64 +------------
tools/include/nolibc/mips/crt.h | 32 +++++++
.../nolibc/{arch-mips.h => mips/sys.h} | 87 +----------------
tools/include/nolibc/nolibc.h | 2 +-
tools/include/nolibc/riscv/crt.h | 28 ++++++
.../nolibc/{arch-riscv.h => riscv/sys.h} | 83 +---------------
tools/include/nolibc/s390/crt.h | 21 ++++
.../nolibc/{arch-s390.h => s390/sys.h} | 74 +-------------
tools/include/nolibc/signal.h | 1 -
tools/include/nolibc/stdio.h | 1 -
tools/include/nolibc/stdlib.h | 2 +-
tools/include/nolibc/sys.h | 65 +++----------
tools/include/nolibc/sys_arch.h | 32 +++++++
tools/include/nolibc/time.h | 1 -
tools/include/nolibc/types.h | 4 +-
tools/include/nolibc/unistd.h | 1 -
tools/include/nolibc/x86_64/crt.h | 33 +++++++
.../nolibc/{arch-x86_64.h => x86_64/sys.h} | 74 +-------------
29 files changed, 421 insertions(+), 701 deletions(-)
create mode 100644 tools/include/nolibc/aarch64/crt.h
rename tools/include/nolibc/{arch-aarch64.h => aarch64/sys.h} (76%)
delete mode 100644 tools/include/nolibc/arch.h
create mode 100644 tools/include/nolibc/arm/crt.h
rename tools/include/nolibc/{arch-arm.h => arm/sys.h} (74%)
create mode 100644 tools/include/nolibc/crt.h
create mode 100644 tools/include/nolibc/crt_arch.h
create mode 100644 tools/include/nolibc/i386/crt.h
rename tools/include/nolibc/{arch-i386.h => i386/sys.h} (73%)
create mode 100644 tools/include/nolibc/loongarch/crt.h
rename tools/include/nolibc/{arch-loongarch.h => loongarch/sys.h} (73%)
create mode 100644 tools/include/nolibc/mips/crt.h
rename tools/include/nolibc/{arch-mips.h => mips/sys.h} (74%)
create mode 100644 tools/include/nolibc/riscv/crt.h
rename tools/include/nolibc/{arch-riscv.h => riscv/sys.h} (70%)
create mode 100644 tools/include/nolibc/s390/crt.h
rename tools/include/nolibc/{arch-s390.h => s390/sys.h} (68%)
create mode 100644 tools/include/nolibc/sys_arch.h
create mode 100644 tools/include/nolibc/x86_64/crt.h
rename tools/include/nolibc/{arch-x86_64.h => x86_64/sys.h} (76%)

--
2.25.1