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SubjectRe: [PATCH v3 0/3] sh: system call table generation support
On Wed, 14 Nov 2018 at 10:02, Firoz Khan <firoz.khan@linaro.org> wrote:
>
> The purpose of this patch series is, we can easily
> add/modify/delete system call table support by cha-
> nging entry in syscall.tbl file instead of manually
> changing many files. The other goal is to unify the
> system call table generation support implementation
> across all the architectures.
>
> The system call tables are in different format in
> all architecture. It will be difficult to manually
> add, modify or delete the system calls in the resp-
> ective files manually. To make it easy by keeping a
> script and which'll generate uapi header file and
> syscall table file.
>
> syscall.tbl contains the list of available system
> calls along with system call number and correspond-
> ing entry point. Add a new system call in this arch-
> itecture will be possible by adding new entry in
> the syscall.tbl file.
>
> Adding a new table entry consisting of:
> - System call number.
> - ABI.
> - System call name.
> - Entry point name.
>
> Please note, this support is only available for 32-bit
> kernel, not 64-bit kernel. As I came across the 64-bit
> kernel is not active for long time.
>
> ARM, s390 and x86 architecuture does exist the sim-
> ilar support. I leverage their implementation to come
> up with a generic solution.
>
> I have done the same support for work for alpha, ia64,
> m68k, microblaze, mips, parisc, powerpc, sparc, and
> xtensa. Below mentioned git repository contains more
> details about the workflow.
>
> https://github.com/frzkhn/system_call_table_generator/
>
> Finally, this is the ground work to solve the Y2038
> issue. We need to add two dozen of system calls to solve
> Y2038 issue. So this patch series will help to add new
> system calls easily by adding new entry in the syscall-
> .tbl.
>
> Changes since v2:
> - changed from generic-y to generated-y in Kbuild.
>
> Changes since v1:
> - optimized/updated the syscall table generation
> scripts.
> - fixed all mixed indentation issues in syscall.tbl.
> - added "comments" in syscall.tbl.
>
> Firoz Khan (3):
> sh: add __NR_syscalls along with NR_syscalls
> sh: add system call table generation support
> sh: generate uapi header and syscall table header files

Gentle reminder!

Could someone review this patch series. I haven't received any
feedback till now.

FYI, this support is only available for 32-bit kernel, not 64-bit
kernel. As I came across the 64-bit kernel is not active for long time.

Thanks
Firoz

>
> arch/sh/Makefile | 3 +
> arch/sh/include/asm/Kbuild | 1 +
> arch/sh/include/asm/unistd.h | 2 +
> arch/sh/include/uapi/asm/Kbuild | 1 +
> arch/sh/include/uapi/asm/unistd_32.h | 4 +-
> arch/sh/include/uapi/asm/unistd_64.h | 4 +-
> arch/sh/kernel/syscalls/Makefile | 38 ++++
> arch/sh/kernel/syscalls/syscall.tbl | 392 ++++++++++++++++++++++++++++++++++
> arch/sh/kernel/syscalls/syscallhdr.sh | 36 ++++
> arch/sh/kernel/syscalls/syscalltbl.sh | 32 +++
> arch/sh/kernel/syscalls_32.S | 387 +--------------------------------
> 11 files changed, 514 insertions(+), 386 deletions(-)
> create mode 100644 arch/sh/kernel/syscalls/Makefile
> create mode 100644 arch/sh/kernel/syscalls/syscall.tbl
> create mode 100644 arch/sh/kernel/syscalls/syscallhdr.sh
> create mode 100644 arch/sh/kernel/syscalls/syscalltbl.sh
>
> --
> 1.9.1
>

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