8 files changed, 33 insertions, 26 deletions

diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 7c88263256a..923a98959fa 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -17,6 +17,7 @@ config SPARC64
         select HAVE_LMB
         select HAVE_ARCH_KGDB
         select USE_GENERIC_SMP_HELPERS if SMP
+        select HAVE_ARCH_TRACEHOOK
 
 config GENERIC_TIME
         bool
diff --git a/arch/sparc64/kernel/compat_audit.c b/arch/sparc64/kernel/compat_audit.c
index c1979482aa9..c831b0a4e66 100644
--- a/arch/sparc64/kernel/compat_audit.c
+++ b/arch/sparc64/kernel/compat_audit.c
@@ -1,4 +1,4 @@
-#include <asm-sparc/unistd.h>
+#include <asm/unistd_32.h>
 
 unsigned sparc32_dir_class[] = {
 #include <asm-generic/audit_dir_write.h>
diff --git a/arch/sparc64/kernel/entry.h b/arch/sparc64/kernel/entry.h
index 32fbab62085..fc294a29289 100644
--- a/arch/sparc64/kernel/entry.h
+++ b/arch/sparc64/kernel/entry.h
@@ -22,8 +22,7 @@ extern void do_notify_resume(struct pt_regs *regs,
                              unsigned long orig_i0,
                              unsigned long thread_info_flags);
 
-extern asmlinkage void syscall_trace(struct pt_regs *regs,
-                                     int syscall_exit_p);
+extern asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p);
 
 extern void bad_trap_tl1(struct pt_regs *regs, long lvl);
 
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index f6c9fc92921..bd578cc4856 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -23,6 +23,7 @@
 #include <linux/audit.h>
 #include <linux/signal.h>
 #include <linux/regset.h>
+#include <linux/tracehook.h>
 #include <linux/compat.h>
 #include <linux/elf.h>
 
@@ -1049,8 +1050,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         return ret;
 }
 
-asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
+asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p)
 {
+        int ret = 0;
+
         /* do the secure computing check first */
         secure_computing(regs->u_regs[UREG_G1]);
 
@@ -1064,27 +1067,14 @@ asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
                 audit_syscall_exit(result, regs->u_regs[UREG_I0]);
         }
 
-        if (!(current->ptrace & PT_PTRACED))
-                goto out;
-
-        if (!test_thread_flag(TIF_SYSCALL_TRACE))
-                goto out;
-
-        ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
-                                 ? 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 (current->exit_code) {
-                send_sig(current->exit_code, current, 1);
-                current->exit_code = 0;
+        if (test_thread_flag(TIF_SYSCALL_TRACE)) {
+                if (syscall_exit_p)
+                        tracehook_report_syscall_exit(regs, 0);
+                else
+                        ret = tracehook_report_syscall_entry(regs);
         }
 
-out:
-        if (unlikely(current->audit_context) && !syscall_exit_p)
+        if (unlikely(current->audit_context) && !syscall_exit_p && !ret)
                 audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
                                      AUDIT_ARCH_SPARC :
                                      AUDIT_ARCH_SPARC64),
@@ -1093,4 +1083,6 @@ out:
                                     regs->u_regs[UREG_I1],
                                     regs->u_regs[UREG_I2],
                                     regs->u_regs[UREG_I3]);
+
+        return ret;
 }
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index c6fc695fe1f..97a993c1f7f 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -46,7 +46,7 @@ __handle_user_windows:
                 wrpr                    %g0, RTRAP_PSTATE_IRQOFF, %pstate
                 ldx                     [%g6 + TI_FLAGS], %l0
 
-1:              andcc                   %l0, _TIF_SIGPENDING, %g0
+1:              andcc                   %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
                 be,pt                   %xcc, __handle_user_windows_continue
                  nop
                 mov                     %l5, %o1
@@ -86,7 +86,7 @@ __handle_perfctrs:
                  wrpr                   %g0, RTRAP_PSTATE, %pstate
                 wrpr                    %g0, RTRAP_PSTATE_IRQOFF, %pstate
                 ldx                     [%g6 + TI_FLAGS], %l0
-1:              andcc                   %l0, _TIF_SIGPENDING, %g0
+1:              andcc                   %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
 
                 be,pt                   %xcc, __handle_perfctrs_continue
                  sethi                  %hi(TSTATE_PEF), %o0
@@ -195,7 +195,7 @@ __handle_preemption_continue:
                  andcc                  %l1, %o0, %g0
                 andcc                   %l0, _TIF_NEED_RESCHED, %g0
                 bne,pn                  %xcc, __handle_preemption
-                 andcc                  %l0, _TIF_SIGPENDING, %g0
+                 andcc                  %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
                 bne,pn                  %xcc, __handle_signal
 __handle_signal_continue:
                  ldub                   [%g6 + TI_WSAVED], %o2
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index 9667e96fd51..d1b84456a9e 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -17,11 +17,13 @@
 #include <linux/errno.h>
 #include <linux/wait.h>
 #include <linux/ptrace.h>
+#include <linux/tracehook.h>
 #include <linux/unistd.h>
 #include <linux/mm.h>
 #include <linux/tty.h>
 #include <linux/binfmts.h>
 #include <linux/bitops.h>
+#include <linux/tracehook.h>
 
 #include <asm/uaccess.h>
 #include <asm/ptrace.h>
@@ -574,6 +576,8 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
                  * clear the TS_RESTORE_SIGMASK flag.
                  */
                 current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+
+                tracehook_signal_handler(signr, &info, &ka, regs, 0);
                 return;
         }
         if (restart_syscall &&
@@ -605,4 +609,8 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long
 {
         if (thread_info_flags & _TIF_SIGPENDING)
                 do_signal(regs, orig_i0);
+        if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+                clear_thread_flag(TIF_NOTIFY_RESUME);
+                tracehook_notify_resume(regs);
+        }
 }
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
index 97cdd1bf4a1..ba5b09ad666 100644
--- a/arch/sparc64/kernel/signal32.c
+++ b/arch/sparc64/kernel/signal32.c
@@ -19,6 +19,7 @@
 #include <linux/binfmts.h>
 #include <linux/compat.h>
 #include <linux/bitops.h>
+#include <linux/tracehook.h>
 
 #include <asm/uaccess.h>
 #include <asm/ptrace.h>
@@ -794,6 +795,8 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
                  * clear the TS_RESTORE_SIGMASK flag.
                  */
                 current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+
+                tracehook_signal_handler(signr, &info, &ka, regs, 0);
                 return;
         }
         if (restart_syscall &&
diff --git a/arch/sparc64/kernel/syscalls.S b/arch/sparc64/kernel/syscalls.S
index db19ed67acf..a2f24270ed8 100644
--- a/arch/sparc64/kernel/syscalls.S
+++ b/arch/sparc64/kernel/syscalls.S
@@ -162,6 +162,8 @@ linux_syscall_trace32:
         add     %sp, PTREGS_OFF, %o0
         call    syscall_trace
          clr    %o1
+        brnz,pn %o0, 3f
+         mov    -ENOSYS, %o0
         srl     %i0, 0, %o0
         srl     %i4, 0, %o4
         srl     %i1, 0, %o1
@@ -173,6 +175,8 @@ linux_syscall_trace:
         add     %sp, PTREGS_OFF, %o0
         call    syscall_trace
          clr    %o1
+        brnz,pn %o0, 3f
+         mov    -ENOSYS, %o0
         mov     %i0, %o0
         mov     %i1, %o1
         mov     %i2, %o2