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authorChristoph Hellwig <hch@lst.de>2010-02-03 12:15:57 +0300
committerMike Frysinger <vapier@gentoo.org>2010-03-09 08:30:51 +0300
commitf5b99627a3065858ad5c678703ed7af5363dca39 (patch)
tree289120c142bb8aa561fa760a22053038b759bb34 /arch/blackfin/kernel
parentad6720c0b52ae1cde0bc567e57a71acde1a292aa (diff)
downloadlinux-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')
-rw-r--r--arch/blackfin/kernel/ptrace.c44
1 files changed, 0 insertions, 44 deletions
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index 65567dc4b9f5..895302df21c1 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);