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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-12-09 09:14:38 +0300
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-12-09 09:14:38 +0300
commitbcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71 (patch)
tree2f6dffd2d3e4dd67355a224de7e7a960335a92fd /arch/m68knommu/kernel/ptrace.c
parent11c34c7deaeeebcee342cbc35e1bb2a6711b2431 (diff)
parent3ff6a468b45b5dfeb0e903e56f4eb27d34b2437c (diff)
downloadlinux-bcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71.tar.xz
Merge commit 'origin/master' into next
Conflicts: include/linux/kvm.h
Diffstat (limited to 'arch/m68knommu/kernel/ptrace.c')
-rw-r--r--arch/m68knommu/kernel/ptrace.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c
index ef70ca070ce2..4d3828959fb0 100644
--- a/arch/m68knommu/kernel/ptrace.c
+++ b/arch/m68knommu/kernel/ptrace.c
@@ -86,6 +86,20 @@ static inline int put_reg(struct task_struct *task, int regno,
return 0;
}
+void user_enable_single_step(struct task_struct *task)
+{
+ unsigned long srflags;
+ srflags = get_reg(task, PT_SR) | (TRACE_BITS << 16);
+ put_reg(task, PT_SR, srflags);
+}
+
+void user_disable_single_step(struct task_struct *task)
+{
+ unsigned long srflags;
+ srflags = get_reg(task, PT_SR) & ~(TRACE_BITS << 16);
+ put_reg(task, PT_SR, srflags);
+}
+
/*
* Called by kernel/ptrace.c when detaching..
*
@@ -93,10 +107,8 @@ static inline int put_reg(struct task_struct *task, int regno,
*/
void ptrace_disable(struct task_struct *child)
{
- unsigned long tmp;
/* make sure the single step bit is not set. */
- tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16);
- put_reg(child, PT_SR, tmp);
+ user_disable_single_step(child);
}
long arch_ptrace(struct task_struct *child, long request, long addr, long data)