Re: [PATCH v2 00/20] linux-user: generate syscall_nr.sh

[Peter Maydell]

On Fri, 21 Feb 2020 at 13:45, Peter Maydell <address@hidden> wrote:
>
> On Wed, 19 Feb 2020 at 22:07, Laurent Vivier <address@hidden> wrote:
> >
> > This series copies the files syscall.tbl from linux v5.5 and generates
> > the file syscall_nr.h from them.
> >
> > This is done for all the QEMU targets that have a syscall.tbl
> > in the linux source tree: mips, mips64, i386, x86_64, sparc, s390x,
> > ppc, arm, microblaze, sh4, xtensa, m68k, hppa and alpha.
> >
> > tilegx and cris are depecrated in linux (tilegx has no maintainer in QEMU)
> >
> > aarch64, nios2, openrisc and riscv have no syscall.tbl in linux.
>
> Is it the case that all our architectures either:
>  (1) have a syscall.tbl
>  (2) are using the asm-generic common numbering system ?

I think that for asm-generic we should be able to generate
the syscall_nr.h by suitably defining a __SYSCALL macro
before #including linux-headers/asm-whatever/unistd.h --
They basically define syscall numbers like this:
#define __NR_setxattr 5
__SYSCALL(__NR_setxattr, sys_setxattr)

so a C program that just did the autogeneration has the
info it needs.

thanks
-- PMM