ptrace: powerpc: implement user_single_step_siginfo()
authorOleg Nesterov <oleg@redhat.com>
Wed, 16 Dec 2009 00:47:18 +0000 (16:47 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 16 Dec 2009 15:20:08 +0000 (07:20 -0800)
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>
arch/powerpc/include/asm/ptrace.h
arch/powerpc/kernel/traps.c

index 8c341490cfc5a9843719bb50a4590d3df24b024c..cbd759e3cd7879d106eec0dea779e40f1790f97b 100644 (file)
@@ -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__ */
index 804f0f30f227f692d949d49117b3c35da908fc6f..d069ff8a7e036c0022fe1e9f3a62112713033af6 100644 (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;