[IA64] arch_ptrace() cleanup
Remove duplicate code, clean up goto's and indentation.
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index f10c8b4..7e0d7dc 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1491,88 +1491,60 @@
void
ptrace_disable (struct task_struct *child)
{
- struct ia64_psr *child_psr = ia64_psr(task_pt_regs(child));
-
- /* make sure the single step/taken-branch trap bits are not set: */
- clear_tsk_thread_flag(child, TIF_SINGLESTEP);
- child_psr->ss = 0;
- child_psr->tb = 0;
+ user_disable_single_step(child);
}
long
arch_ptrace (struct task_struct *child, long request, long addr, long data)
{
- struct pt_regs *pt;
- struct switch_stack *sw;
- long ret;
-
- pt = task_pt_regs(child);
- sw = (struct switch_stack *) (child->thread.ksp + 16);
-
switch (request) {
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA:
+ case PTRACE_PEEKTEXT:
+ case PTRACE_PEEKDATA:
/* read word at location addr */
if (access_process_vm(child, addr, &data, sizeof(data), 0)
- != sizeof(data)) {
- ret = -EIO;
- goto out_tsk;
- }
- ret = data;
- /* ensure "ret" is not mistaken as an error code */
+ != sizeof(data))
+ return -EIO;
+ /* ensure return value is not mistaken for error code */
force_successful_syscall_return();
- goto out_tsk;
+ return data;
/* PTRACE_POKETEXT and PTRACE_POKEDATA is handled
* by the generic ptrace_request().
*/
- case PTRACE_PEEKUSR:
+ case PTRACE_PEEKUSR:
/* read the word at addr in the USER area */
- if (access_uarea(child, addr, &data, 0) < 0) {
- ret = -EIO;
- goto out_tsk;
- }
- ret = data;
- /* ensure "ret" is not mistaken as an error code */
+ if (access_uarea(child, addr, &data, 0) < 0)
+ return -EIO;
+ /* ensure return value is not mistaken for error code */
force_successful_syscall_return();
- goto out_tsk;
+ return data;
- case PTRACE_POKEUSR:
+ case PTRACE_POKEUSR:
/* write the word at addr in the USER area */
- if (access_uarea(child, addr, &data, 1) < 0) {
- ret = -EIO;
- goto out_tsk;
- }
- ret = 0;
- goto out_tsk;
+ if (access_uarea(child, addr, &data, 1) < 0)
+ return -EIO;
+ return 0;
- case PTRACE_OLD_GETSIGINFO:
+ case PTRACE_OLD_GETSIGINFO:
/* for backwards-compatibility */
- ret = ptrace_request(child, PTRACE_GETSIGINFO, addr, data);
- goto out_tsk;
+ return ptrace_request(child, PTRACE_GETSIGINFO, addr, data);
- case PTRACE_OLD_SETSIGINFO:
+ case PTRACE_OLD_SETSIGINFO:
/* for backwards-compatibility */
- ret = ptrace_request(child, PTRACE_SETSIGINFO, addr, data);
- goto out_tsk;
+ return ptrace_request(child, PTRACE_SETSIGINFO, addr, data);
- case PTRACE_GETREGS:
- ret = ptrace_getregs(child,
- (struct pt_all_user_regs __user *) data);
- goto out_tsk;
+ case PTRACE_GETREGS:
+ return ptrace_getregs(child,
+ (struct pt_all_user_regs __user *) data);
- case PTRACE_SETREGS:
- ret = ptrace_setregs(child,
- (struct pt_all_user_regs __user *) data);
- goto out_tsk;
+ case PTRACE_SETREGS:
+ return ptrace_setregs(child,
+ (struct pt_all_user_regs __user *) data);
- default:
- ret = ptrace_request(child, request, addr, data);
- goto out_tsk;
+ default:
+ return ptrace_request(child, request, addr, data);
}
- out_tsk:
- return ret;
}