Hi Dmitry,
On Mon, Dec 10, 2018 at 5:30 AM Dmitry V. Levin <ldv@xxxxxxxxxxxx> wrote:
syscall_get_* functions are required to be implemented on all
architectures in order to extend the generic ptrace API with
PTRACE_GET_SYSCALL_INFO request.
This introduces asm/syscall.h on m68k implementing all 5 syscall_get_*
functions as documented in asm-generic/syscall.h: syscall_get_nr,
syscall_get_arguments, syscall_get_error, syscall_get_return_value,
and syscall_get_arch.
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Elvira Khabirova <lineprinter@xxxxxxxxxxxx>
Cc: Eugene Syromyatnikov <esyr@xxxxxxxxxx>
Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Dmitry V. Levin <ldv@xxxxxxxxxxxx>
---
Notes:
v5: added syscall_get_nr, syscall_get_arguments, syscall_get_error,
and syscall_get_return_value
v1: added syscall_get_arch
--- /dev/null
+++ b/arch/m68k/include/asm/syscall.h
@@ -0,0 +1,39 @@
+static inline void
+syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
+ unsigned int i, unsigned int n, unsigned long *args)
+{
+ BUG_ON(i + n > 6);
Does this have to crash the kernel?
Perhaps you can return an error code instead?
+ memcpy(args, ®s->d1 + i, n * sizeof(args[0]));
+}
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
