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ptrace: powerpc: implement user_single_step_siginfo()

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Suggested by Roland.

Implement user_single_step_siginfo() for powerpc.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: <linux-arch@vger.kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2009-12-15 16:47:18 -08:00 committed by Linus Torvalds
parent 85ec7fd9f8
commit 25baa35bef
2 changed files with 11 additions and 0 deletions
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2
arch/powerpc/include/asm/ptrace.h
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@ -140,6 +140,8 @@ extern void user_enable_single_step(struct task_struct *);
extern void user_enable_block_step(struct task_struct *);
extern void user_disable_single_step(struct task_struct *);
#define ARCH_HAS_USER_SINGLE_STEP_INFO
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */

9
arch/powerpc/kernel/traps.c
View file

@ -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;