diff options
| author |   Christoph Hellwig <hch@lst.de> | 2010-03-10 15:23:01 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 15:52:39 -0800 |
| commit | e34112e3966fc466ced2698e6c196bb50b1ee20e (patch) | |
| tree | c013322641861cb4a41cd322f38efaf2ff0f8160 /arch/m32r/include | |
| parent | cris arch-v32: use generic ptrace_resume code (diff) | |
| download | linux-dev-e34112e3966fc466ced2698e6c196bb50b1ee20e.tar.xz linux-dev-e34112e3966fc466ced2698e6c196bb50b1ee20e.zip | |
m32r: use generic ptrace_resume code
Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT,
PTRACE_KILL and PTRACE_SINGLESTEP. This implies defining
arch_has_single_step in <asm/ptrace.h> and implementing the
user_enable_single_step and user_disable_single_step functions, which also
causes the breakpoint information to be cleared on fork, which could be
considered a bug fix.
Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which
it previously wasn't, which is consistent with all architectures using the
modern ptrace code.
The old code only disables the breakpoints on PTRACE_KILL, while after
this patch this also happens for PTRACE_CONT and PTRACE_SYSCALL which
matches the behaviour of the other architetures. I think this is a
bugfixes, but please double verify this is correct.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m32r/include')
| -rw-r--r-- | arch/m32r/include/asm/ptrace.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/m32r/include/asm/ptrace.h b/arch/m32r/include/asm/ptrace.h index a0755b982028..840a1231edeb 100644 --- a/arch/m32r/include/asm/ptrace.h +++ b/arch/m32r/include/asm/ptrace.h @@ -120,6 +120,8 @@ struct pt_regs { #include <asm/m32r.h> /* M32R_PSW_BSM, M32R_PSW_BPM */ +#define arch_has_single_step() (1) + struct task_struct; extern void init_debug_traps(struct task_struct *); #define arch_ptrace_attach(child) \ |