On Mon, Nov 19, 2018 at 10:38:20AM +0530, Firoz Khan wrote: > On Wed, 14 Nov 2018 at 10:02, Firoz Khan <firoz.khan@xxxxxxxxxx> 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. I'm way behind, but fine with it going upstream via whatever tree is appropriate. I think Arnd will take care of it. Acked-by: Rich Felker <dalias@xxxxxxxx> > 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. Support for 64-bit, which AFAIK barely ever existed in hardware, was removed from GCC a long time ago. At some point it needs to be removed from the kernel too, and doing so should allow a lot of cleanup. Rich
