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authorMatt Fleming <matt@console-pimps.org>2009-07-06 20:16:33 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-07-06 20:16:33 +0900
commitc652d780c9cf7f860141de232b37160fe013feca (patch)
tree110c95ee2b66a7c9b032be8edad36f9b53f82af0 /arch/sh/kernel/entry-common.S
parentc1340c053be7a43d837a3acb352d5008be865a55 (diff)
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>
Diffstat (limited to 'arch/sh/kernel/entry-common.S')
-rw-r--r--arch/sh/kernel/entry-common.S18
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