sh: Add ftrace syscall tracing support

Now that I've added TIF_SYSCALL_FTRACE the thread flags do not fit into
a single byte any more. Code testing them now needs to be aware of the
upper and lower bytes.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 13 insertions, 5 deletions

diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index d62359cfbbe2..d62175650c54 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -131,7 +131,7 @@ ENTRY(resume_userspace)
          nop
 #endif
         mov.l   @(TI_FLAGS,r8), r0              ! current_thread_info->flags
-        tst     #_TIF_WORK_MASK, r0
+        tst     #(_TIF_WORK_MASK & 0xff), r0
         bt/s    __restore_all
          tst    #_TIF_NEED_RESCHED, r0
 
@@ -163,7 +163,7 @@ work_resched:
 #endif
         !
         mov.l   @(TI_FLAGS,r8), r0              ! current_thread_info->flags
-        tst     #_TIF_WORK_MASK, r0
+        tst     #(_TIF_WORK_MASK & 0xff), r0
         bt      __restore_all
         bra     work_pending
          tst    #_TIF_NEED_RESCHED, r0
@@ -181,7 +181,7 @@ work_resched:
 syscall_exit_work:
         ! r0: current_thread_info->flags
         ! r8: current_thread_info
-        tst     #_TIF_WORK_SYSCALL_MASK, r0
+        tst     #(_TIF_WORK_SYSCALL_MASK & 0xff), r0
         bt/s    work_pending
          tst    #_TIF_NEED_RESCHED, r0
 #ifdef CONFIG_TRACE_IRQFLAGS
@@ -331,8 +331,12 @@ ENTRY(system_call)
         !
         get_current_thread_info r8, r10
         mov.l   @(TI_FLAGS,r8), r8
-        mov     #_TIF_WORK_SYSCALL_MASK, r10
+        mov     #(_TIF_WORK_SYSCALL_MASK & 0xff), r10
+        mov     #(_TIF_WORK_SYSCALL_MASK >> 8), r9
         tst     r10, r8
+        shll8   r9
+        bf      syscall_trace_entry
+        tst     r9, r8
         bf      syscall_trace_entry
         !
         mov.l   2f, r8                  ! Number of syscalls
@@ -359,7 +363,11 @@ syscall_exit:
         !
         get_current_thread_info r8, r0
         mov.l   @(TI_FLAGS,r8), r0              ! current_thread_info->flags
-        tst     #_TIF_ALLWORK_MASK, r0
+        tst     #(_TIF_ALLWORK_MASK & 0xff), r0
+        mov     #(_TIF_ALLWORK_MASK >> 8), r1
+        bf      syscall_exit_work
+        shlr8   r0
+        tst     r0, r1
         bf      syscall_exit_work
         bra     __restore_all
          nop