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SubjectRe: [PATCH v2 0/5] System call table generation support
Hi Greg,

On Mon, 24 Sep 2018 at 06:38, Greg Ungerer <gerg@linux-m68k.org> wrote:
>
> Hi Firoz,
>
> On 21/09/18 01:06, Firoz Khan wrote:
> > The purpose of this patch series is:
> > 1. We can easily add/modify/delete system call by changing entry
> > in syscall.tbl file. No need to manually edit many files.
> >
> > 2. It is easy to unify the system call implementation across all
> > the architectures.
> >
> > The system call tables are in different format in all architecture
> > and it will be difficult to manually add or modify the system calls
> > in the respective files manually. To make it easy by keeping a script
> > and which'll generate the header file and syscall table file so this
> > change will unify them across all architectures.
> >
> > syscall.tbl contains the list of available system calls along with
> > system call number and corresponding entry point. Add a new system
> > call in this architecture 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.
> > - Compat entry name, if required.
> >
> > ARM, s390 and x86 architecuture does exist the similar support. I
> > leverage their implementation to come up with a generic solution.
> >
> > I have done the same support for work for alpha, microblaze, sparc,
> > mips, parisc, powerpc, sh, sparc, and xtensa. But I started sending
> > the patch for one architecuture for review. Below mentioned git
> > repository contains more details.
> > Git repo:- https://github.com/frzkhn/system_call_table_generator/
> >
> > Added an extra patch to keep __IGNORE* entries in asm/unistd.h.
> >
> > Finally, this is the ground work for solving the Y2038 issue. We
> > need to add/change two dozen of system calls to solve Y2038 issue.
> > So this patch series will help to easily modify from existing
> > system call to Y2038 compatible system calls.
> >
> > Firoz Khan (5):
> > m68k: Rename system call table file name
> > m68k: Replace NR_syscalls macro from asm/unistd.h
> > m68k: Added system call table generation support
> > m68k: uapi header and system call table file generation
> > m68k: added __IGNORE* entries in asm/unistd.h
>
> Built and tested on a couple of m68k/ColdFire targets,
> m520x (no MMU) and m5475 (with MMU). Load and run on real hardware,
> no problems found. So for m68knommu/ColdFire:

Thanks for your support!

Philippe De Muyter shared one comment. I have to include that change in the
patch series. BTW I can post version 3 patch series within couple of days.

It would be great if someone can review this patches now and share
your comments.
So I can include it in the next version.

- Firoz

>
> Tested-by: Greg Ungerer <gerg@linux-m68k.org>
>
> Regards
> Greg
>
>
> > arch/m68k/Makefile | 3 +
> > arch/m68k/include/asm/Kbuild | 1 +
> > arch/m68k/include/asm/unistd.h | 10 +-
> > arch/m68k/include/uapi/asm/Kbuild | 1 +
> > arch/m68k/include/uapi/asm/unistd.h | 385 +-----------------------------
> > arch/m68k/kernel/Makefile | 2 +-
> > arch/m68k/kernel/syscall_table.S | 14 ++
> > arch/m68k/kernel/syscalls/Makefile | 37 +++
> > arch/m68k/kernel/syscalls/syscall.tbl | 369 +++++++++++++++++++++++++++++
> > arch/m68k/kernel/syscalls/syscallhdr.sh | 39 ++++
> > arch/m68k/kernel/syscalls/syscalltbl.sh | 28 +++
> > arch/m68k/kernel/syscalltable.S | 403 --------------------------------
> > 12 files changed, 502 insertions(+), 790 deletions(-)
> > create mode 100644 arch/m68k/kernel/syscall_table.S
> > create mode 100644 arch/m68k/kernel/syscalls/Makefile
> > create mode 100644 arch/m68k/kernel/syscalls/syscall.tbl
> > create mode 100644 arch/m68k/kernel/syscalls/syscallhdr.sh
> > create mode 100644 arch/m68k/kernel/syscalls/syscalltbl.sh
> > delete mode 100644 arch/m68k/kernel/syscalltable.S
> >

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