From: Oleg Nesterov <oleg@redhat.com>
To: Alexey Dobriyan <adobriyan@gmail.com>,
Ananth Mavinakayanahalli <ananth@in.ibm.com>,
Christoph Hellwig <hch@infradead.org>,
"Frank Ch. Eigler" <fche@redhat.com>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Roland McGrath <roland@redhat.com>
Cc: linux-kernel@vger.kernel.org, utrace-devel@redhat.com
Subject: [RFC,PATCH 04/14] ptrace: implement user_single_step_siginfo()
Date: Tue, 24 Nov 2009 21:01:42 +0100 [thread overview]
Message-ID: <20091124200142.GA5772@redhat.com> (raw)
(already in mm: ptrace-powerpc-implement-user_single_step_siginfo.patch)
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>
---
arch/powerpc/include/asm/ptrace.h | 2 ++
arch/powerpc/kernel/traps.c | 9 +++++++++
2 files changed, 11 insertions(+)
--- V1/arch/powerpc/include/asm/ptrace.h~4_PPC_HELPER 2009-11-24 19:46:49.000000000 +0100
+++ V1/arch/powerpc/include/asm/ptrace.h 2009-11-24 19:51:41.000000000 +0100
@@ -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__ */
--- V1/arch/powerpc/kernel/traps.c~4_PPC_HELPER 2009-11-24 19:46:49.000000000 +0100
+++ V1/arch/powerpc/kernel/traps.c 2009-11-24 19:51:41.000000000 +0100
@@ -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;
reply other threads:[~2009-11-24 20:07 UTC|newest]
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