On Mon, 24 Sep 2018 at 12:33, Geert Uytterhoeven email@example.com wrote:
On Thu, Sep 20, 2018 at 5:07 PM Firoz Khan firstname.lastname@example.org wrote:
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. 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.
The system call table generation script is added in syscalls directory which contain the script to generate both uapi header file system call table generation file and syscall.tbl file which'll be the input for the scripts.
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.
syscallhdr.sh and syscalltbl.sh will generate uapi header- unistd.h and syscall_table.h files respectively. File syscall_table.h is included by syscall_table.S - the real system call table. Both .sh files will parse the content syscall.tbl to generate the header and table files.
ARM, s390 and x86 architecuture does have the similar support. I leverage their implementation to come up with a generic solution. And this is the ground work for y2038 issue. We need to change two dozons of system call implementation and this work will reduce the effort by simply modify two dozon entries in syscall.tbl.
Signed-off-by: Firoz Khan email@example.com
Thanks for your patch!
--- /dev/null +++ b/arch/m68k/kernel/syscalls/syscall.tbl @@ -0,0 +1,369 @@ +# +# Linux system call numbers and entry vectors +# +# The format is: +# <number> <abi> <name> <entry point> +# +# The abi is always common for this file. +# +0 common restart_syscall sys_restart_syscall
Why the indentation by an "odd" number of spaces, instead of TABs?
I'll check and fix ASAP. Hopefully I can post a clean (almost) patch series within couple of days!
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- firstname.lastname@example.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds