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author | Christoph Hellwig <hch@lst.de> | 2010-02-03 09:15:57 (GMT) |
---|---|---|
committer | Mike Frysinger <vapier@gentoo.org> | 2010-03-09 05:30:51 (GMT) |
commit | f5b99627a3065858ad5c678703ed7af5363dca39 (patch) | |
tree | 289120c142bb8aa561fa760a22053038b759bb34 /arch/blackfin/kernel/ptrace.c | |
parent | ad6720c0b52ae1cde0bc567e57a71acde1a292aa (diff) | |
download | linux-fsl-qoriq-f5b99627a3065858ad5c678703ed7af5363dca39.tar.xz |
Blackfin: 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.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel/ptrace.c')
-rw-r--r-- | arch/blackfin/kernel/ptrace.c | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index 65567dc..895302d 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -354,50 +354,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) ret = put_reg(child, addr, data); break; - case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ - case PTRACE_CONT: /* restart after signal. */ - pr_debug("ptrace: syscall/cont\n"); - - ret = -EIO; - if (!valid_signal(data)) - break; - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - ptrace_disable(child); - pr_debug("ptrace: before wake_up_process\n"); - wake_up_process(child); - ret = 0; - break; - - /* - * make the child exit. Best I can do is send it a sigkill. - * perhaps it should be put in the status that it wants to - * exit. - */ - case PTRACE_KILL: - ret = 0; - if (child->exit_state == EXIT_ZOMBIE) /* already dead */ - break; - child->exit_code = SIGKILL; - ptrace_disable(child); - wake_up_process(child); - break; - - case PTRACE_SINGLESTEP: /* set the trap flag. */ - pr_debug("ptrace: single step\n"); - ret = -EIO; - if (!valid_signal(data)) - break; - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - ptrace_enable(child); - child->exit_code = data; - wake_up_process(child); - ret = 0; - break; - case PTRACE_GETREGS: /* Get all gp regs from the child. */ ret = ptrace_getregs(child, datap); |