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powerpc: arch_has_single_step

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This defines the new standard arch_has_single_step macro.  It makes the
existing set_single_step and clear_single_step entry points global, and
renames them to the new standard names user_enable_single_step and
user_disable_single_step, respectively.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Roland McGrath 2008-01-30 13:30:51 +01:00 committed by Ingo Molnar
parent 227195d4a6
commit 2a84b0d719
2 changed files with 13 additions and 6 deletions
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12
arch/powerpc/kernel/ptrace.c
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@ -256,7 +256,7 @@ static int set_evrregs(struct task_struct *task, unsigned long *data)
#endif /* CONFIG_SPE */
static void set_single_step(struct task_struct *task)
void user_enable_single_step(struct task_struct *task)
{
struct pt_regs *regs = task->thread.regs;
@ -271,7 +271,7 @@ static void set_single_step(struct task_struct *task)
set_tsk_thread_flag(task, TIF_SINGLESTEP);
}
static void clear_single_step(struct task_struct *task)
void user_disable_single_step(struct task_struct *task)
{
struct pt_regs *regs = task->thread.regs;
@ -313,7 +313,7 @@ static int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
void ptrace_disable(struct task_struct *child)
{
/* make sure the single step bit is not set. */
clear_single_step(child);
user_disable_single_step(child);
}
/*
@ -456,7 +456,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;
/* make sure the single step bit is not set. */
clear_single_step(child);
user_disable_single_step(child);
wake_up_process(child);
ret = 0;
break;
@ -473,7 +473,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
break;
child->exit_code = SIGKILL;
/* make sure the single step bit is not set. */
clear_single_step(child);
user_disable_single_step(child);
wake_up_process(child);
break;
}
@ -483,7 +483,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);
user_enable_single_step(child);
child->exit_code = data;
/* give it a chance to run. */
wake_up_process(child);

7
include/asm-powerpc/ptrace.h
View File

@ -119,6 +119,13 @@ do { \
} while (0)
#endif /* __powerpc64__ */
/*
* These are defined as per linux/ptrace.h, which see.
*/
#define arch_has_single_step() (1)
extern void user_enable_single_step(struct task_struct *);
extern void user_disable_single_step(struct task_struct *);
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */