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[ARM] ptrace: clean up single stepping support

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2007-03-04 09:50:28 +00:00
committed by Russell King
parent 0f0a00beb8
commit b2a0d36fde
3 changed files with 48 additions and 28 deletions
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39
arch/arm/kernel/ptrace.h
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@@ -7,6 +7,45 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/ptrace.h>
extern void ptrace_cancel_bpt(struct task_struct *);
extern void ptrace_set_bpt(struct task_struct *);
extern void ptrace_break(struct task_struct *, struct pt_regs *);
/*
* make sure single-step breakpoint is gone.
*/
static inline void single_step_disable(struct task_struct *task)
{
task->ptrace &= ~PT_SINGLESTEP;
ptrace_cancel_bpt(task);
}
static inline void single_step_enable(struct task_struct *task)
{
task->ptrace |= PT_SINGLESTEP;
}
/*
* Send SIGTRAP if we're single-stepping
*/
static inline void single_step_trap(struct task_struct *task)
{
if (task->ptrace & PT_SINGLESTEP) {
ptrace_cancel_bpt(task);
send_sig(SIGTRAP, task, 1);
}
}
static inline void single_step_clear(struct task_struct *task)
{
if (task->ptrace & PT_SINGLESTEP)
ptrace_cancel_bpt(task);
}
static inline void single_step_set(struct task_struct *task)
{
if (task->ptrace & PT_SINGLESTEP)
ptrace_set_bpt(task);
}