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m68k: Remove ptrace_signal_deliver

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This fixes debugger syscall restart interactions.  A debugger that
modifies the tracee's program counter is expected to set the orig_d0
pseudo register to -1, to disable a possible syscall restart.

This removes the last user of the ptrace_signal_deliver hook in the ptrace
signal handling, so remove that as well.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Andreas Schwab
2017-06-07 00:11:44 +02:00
committed by Geert Uytterhoeven
parent 1072734a2c
commit 204a2be30a
4 changed files with 0 additions and 26 deletions
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16
arch/m68k/kernel/signal.c
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@@ -109,22 +109,6 @@ int fixup_exception(struct pt_regs *regs)
return 1;
}
void ptrace_signal_deliver(void)
{
struct pt_regs *regs = signal_pt_regs();
if (regs->orig_d0 < 0)
return;
switch (regs->d0) {
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR:
regs->d0 = regs->orig_d0;
regs->orig_d0 = -1;
regs->pc -= 2;
break;
}
}
static inline void push_cache (unsigned long vaddr)
{
/*