On Thu, Sep 20, 2018 at 5:06 PM Firoz Khan <firoz.khan@xxxxxxxxxx> 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 > > 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 Tested-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx 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
