CC linux-kselftest
On Thu, Jan 12, 2023 at 4:55 AM Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:
> Add m68k seccomp definitions to seccomp_bpf self test code.
>
> Tested on ARAnyM.
>
> Signed-off-by: Michael Schmitz <schmitzmic@xxxxxxxxx>
>
> --
> Changes from v12:
>
> Michael Karcher:
> - use correct definition of ARCH_REGS (use of struct pt_regs
> cause stack overflow on passing register set to user space
> due to size mismatch, and has some register offsets wrong)
Thanks for the update!
Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
i.e. will queue in the m68k for-v6.3 branch.
> --- a/tools/testing/selftests/seccomp/seccomp_bpf.c
> +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
> @@ -138,6 +138,8 @@ struct seccomp_data {
> # define __NR_seccomp 337
> # elif defined(__sh__)
> # define __NR_seccomp 372
> +# elif defined(__mc68000__)
> +# define __NR_seccomp 380
> # else
> # warning "seccomp syscall number unknown for this architecture"
> # define __NR_seccomp 0xffff
> @@ -1838,6 +1840,10 @@ TEST_F(TRACE_poke, getpid_runs_normally)
> # define ARCH_REGS struct pt_regs
> # define SYSCALL_NUM(_regs) (_regs).regs[3]
> # define SYSCALL_RET(_regs) (_regs).regs[0]
> +#elif defined(__mc68000__)
> +# define ARCH_REGS struct user_regs_struct
> +# define SYSCALL_NUM(_regs) (_regs).orig_d0
> +# define SYSCALL_RET(_regs) (_regs).d0
> #else
> # error "Do not know how to find your architecture's registers and syscalls"
> #endif
> @@ -1902,7 +1908,7 @@ const bool ptrace_entry_set_syscall_ret =
> * Use PTRACE_GETREGS and PTRACE_SETREGS when available. This is useful for
> * architectures without HAVE_ARCH_TRACEHOOK (e.g. User-mode Linux).
> */
> -#if defined(__x86_64__) || defined(__i386__) || defined(__mips__)
> +#if defined(__x86_64__) || defined(__i386__) || defined(__mips__) || defined(__mc68000__)
> # define ARCH_GETREGS(_regs) ptrace(PTRACE_GETREGS, tracee, 0, &(_regs))
> # define ARCH_SETREGS(_regs) ptrace(PTRACE_SETREGS, tracee, 0, &(_regs))
> #else
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
