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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-04-30 13:38:48 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-04-30 13:38:48 +0200 |
| commit | 613e1def6b52c399a8b72a5e11bc2e57d2546fb8 (patch) | |
| tree | 2c9c1d607e85cad81422a671d350da8d027a5753 | |
| parent | 17f345808563d2f425b2b15d60c4a5b00112e9eb (diff) | |
| download | linux-613e1def6b52c399a8b72a5e11bc2e57d2546fb8.tar.bz2 | |
[S390] Remove self ptrace IEEE_IP hack.
The self referential PT_IEEE_IP ptrace peek & poke calls have been
broken for that last 6 years. For peek the code always returns 0
instead of the last ieee fault and for poke the code does nothing.
Since nobody noticed the code seems to be superfluous. So lets
remove it.
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 58a064296987..9dbaef44e8ec 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -607,8 +607,6 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data) } #endif -#define PT32_IEEE_IP 0x13c - static int do_ptrace(struct task_struct *child, long request, long addr, long data) { @@ -617,24 +615,6 @@ do_ptrace(struct task_struct *child, long request, long addr, long data) if (request == PTRACE_ATTACH) return ptrace_attach(child); - /* - * Special cases to get/store the ieee instructions pointer. - */ - if (child == current) { - if (request == PTRACE_PEEKUSR && addr == PT_IEEE_IP) - return peek_user(child, addr, data); - if (request == PTRACE_POKEUSR && addr == PT_IEEE_IP) - return poke_user(child, addr, data); -#ifdef CONFIG_COMPAT - if (request == PTRACE_PEEKUSR && - addr == PT32_IEEE_IP && test_thread_flag(TIF_31BIT)) - return peek_user_emu31(child, addr, data); - if (request == PTRACE_POKEUSR && - addr == PT32_IEEE_IP && test_thread_flag(TIF_31BIT)) - return poke_user_emu31(child, addr, data); -#endif - } - ret = ptrace_check_attach(child, request == PTRACE_KILL); if (ret < 0) return ret; |