diff options
| author | Christoph Hellwig <hch@lst.de> | 2010-03-11 02:23:00 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-13 02:52:39 +0300 |
| commit | 290ba3aef58ff21c977585ff6b687e457f80bf54 (patch) | |
| tree | efce6dc709b93798f588e0825602a6cc3b73786d /arch/cris/include | |
| parent | 8313809ef3bfa8fa366d416add2150787235f192 (diff) | |
| download | linux-290ba3aef58ff21c977585ff6b687e457f80bf54.tar.xz | |
cris arch-v32: 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 way breakpoints are disabled is entirely inconsistent currently, I
tried to make some sense of it, but I suspect all of the content of
ptrace_disable should be moved into user_disable_single_step, this
defintively needs some revisting as the current patch changes behaviour in
not quite designed ways.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/cris/include')
| -rw-r--r-- | arch/cris/include/arch-v32/arch/ptrace.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/cris/include/arch-v32/arch/ptrace.h b/arch/cris/include/arch-v32/arch/ptrace.h index 41f4e8662bc2..ffca8d0f2e17 100644 --- a/arch/cris/include/arch-v32/arch/ptrace.h +++ b/arch/cris/include/arch-v32/arch/ptrace.h @@ -108,6 +108,7 @@ struct switch_stack { #ifdef __KERNEL__ +#define arch_has_single_step() (1) #define user_mode(regs) (((regs)->ccs & (1 << (U_CCS_BITNR + CCS_SHIFT))) != 0) #define instruction_pointer(regs) ((regs)->erp) extern void show_regs(struct pt_regs *); |