1 files changed, 26 insertions, 28 deletions

diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index ff66f97c564d..f48769b23bd6 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -21,6 +21,7 @@
 #include <linux/io.h>
 #include <linux/audit.h>
 #include <linux/seccomp.h>
+#include <linux/tracehook.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/system.h>
@@ -216,41 +217,38 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         return ret;
 }
 
-asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
+asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
 {
-        struct task_struct *tsk = current;
+        long ret = 0;
 
         secure_computing(regs->regs[0]);
 
-        if (unlikely(current->audit_context) && entryexit)
-                audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]),
-                                   regs->regs[0]);
-
-        if (!test_thread_flag(TIF_SYSCALL_TRACE) &&
-            !test_thread_flag(TIF_SINGLESTEP))
-                goto out;
-        if (!(tsk->ptrace & PT_PTRACED))
-                goto out;
-
-        /* the 0x80 provides a way for the tracing parent to distinguish
-           between a syscall stop and SIGTRAP delivery */
-        ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) &&
-                                 !test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0));
-
-        /*
-         * this isn't the same as continuing with a signal, but it will do
-         * for normal use.  strace only continues with a signal if the
-         * stopping signal is not SIGTRAP.  -brl
-         */
-        if (tsk->exit_code) {
-                send_sig(tsk->exit_code, tsk, 1);
-                tsk->exit_code = 0;
-        }
+        if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+            tracehook_report_syscall_entry(regs))
+                /*
+                 * Tracing decided this syscall should not happen.
+                 * We'll return a bogus call number to get an ENOSYS
+                 * error, but leave the original number in regs->regs[0].
+                 */
+                ret = -1L;
 
-out:
-        if (unlikely(current->audit_context) && !entryexit)
+        if (unlikely(current->audit_context))
                 audit_syscall_entry(AUDIT_ARCH_SH, regs->regs[3],
                                     regs->regs[4], regs->regs[5],
                                     regs->regs[6], regs->regs[7]);
 
+        return ret ?: regs->regs[0];
+}
+
+asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
+{
+        int step;
+
+        if (unlikely(current->audit_context))
+                audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]),
+                                   regs->regs[0]);
+
+        step = test_thread_flag(TIF_SINGLESTEP);
+        if (step || test_thread_flag(TIF_SYSCALL_TRACE))
+                tracehook_report_syscall_exit(regs, step);
 }