diff options
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 31 |
1 files changed, 9 insertions, 22 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 9d1f9354d6c..d069ff8a7e0 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -174,6 +174,15 @@ int die(const char *str, struct pt_regs *regs, long err) return 0; } +void user_single_step_siginfo(struct task_struct *tsk, + struct pt_regs *regs, siginfo_t *info) +{ + memset(info, 0, sizeof(*info)); + info->si_signo = SIGTRAP; + info->si_code = TRAP_TRACE; + info->si_addr = (void __user *)regs->nip; +} + void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr) { siginfo_t info; @@ -198,28 +207,6 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr) info.si_code = code; info.si_addr = (void __user *) addr; force_sig_info(signr, &info, current); - - /* - * Init gets no signals that it doesn't have a handler for. - * That's all very well, but if it has caused a synchronous - * exception and we ignore the resulting signal, it will just - * generate the same exception over and over again and we get - * nowhere. Better to kill it and let the kernel panic. - */ - if (is_global_init(current)) { - __sighandler_t handler; - - spin_lock_irq(¤t->sighand->siglock); - handler = current->sighand->action[signr-1].sa.sa_handler; - spin_unlock_irq(¤t->sighand->siglock); - if (handler == SIG_DFL) { - /* init has generated a synchronous exception - and it doesn't have a handler for the signal */ - printk(KERN_CRIT "init has generated signal %d " - "but has no handler for it\n", signr); - do_exit(signr); - } - } } #ifdef CONFIG_PPC64 |