From: Oleg Nesterov <oleg@xxxxxxxxxx>
Suggested by Roland.
Implement user_single_step_siginfo() for powerpc.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Acked-by: Roland McGrath <roland@xxxxxxxxxx>
Cc: <linux-arch@xxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/ptrace.h | 2 ++
arch/powerpc/kernel/traps.c | 9 +++++++++
2 files changed, 11 insertions(+)
diff -puN arch/powerpc/include/asm/ptrace.h~ptrace-powerpc-implement-user_single_step_siginfo arch/powerpc/include/asm/ptrace.h
--- a/arch/powerpc/include/asm/ptrace.h~ptrace-powerpc-implement-user_single_step_siginfo
+++ a/arch/powerpc/include/asm/ptrace.h
@@ -140,6 +140,8 @@ extern void user_enable_single_step(stru
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__ */
diff -puN arch/powerpc/kernel/traps.c~ptrace-powerpc-implement-user_single_step_siginfo arch/powerpc/kernel/traps.c
--- a/arch/powerpc/kernel/traps.c~ptrace-powerpc-implement-user_single_step_siginfo
+++ a/arch/powerpc/kernel/traps.c
@@ -174,6 +174,15 @@ int die(const char *str, struct pt_regs
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;
_
--
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