diff options
Diffstat (limited to 'arch/sh/kernel/entry-common.S')
-rw-r--r-- | arch/sh/kernel/entry-common.S | 43 |
1 files changed, 10 insertions, 33 deletions
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index 5e0dd193384..efbb4268875 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -92,6 +92,7 @@ ENTRY(ret_from_irq) bra resume_userspace nop ENTRY(resume_kernel) + cli mov.l @(TI_PRE_COUNT,r8), r0 ! current_thread_info->preempt_count tst r0, r0 bf noresched @@ -105,28 +106,9 @@ need_resched: and #0xf0, r0 ! interrupts off (exception path)? cmp/eq #0xf0, r0 bt noresched - - mov.l 1f, r0 - mov.l r0, @(TI_PRE_COUNT,r8) - -#ifdef CONFIG_TRACE_IRQFLAGS mov.l 3f, r0 - jsr @r0 - nop -#endif - sti - mov.l 2f, r0 - jsr @r0 - nop - mov #0, r0 - mov.l r0, @(TI_PRE_COUNT,r8) - cli -#ifdef CONFIG_TRACE_IRQFLAGS - mov.l 4f, r0 - jsr @r0 + jsr @r0 ! call preempt_schedule_irq nop -#endif - bra need_resched nop @@ -137,10 +119,7 @@ noresched: .align 2 1: .long PREEMPT_ACTIVE 2: .long schedule -#ifdef CONFIG_TRACE_IRQFLAGS -3: .long trace_hardirqs_on -4: .long trace_hardirqs_off -#endif +3: .long preempt_schedule_irq #endif ENTRY(resume_userspace) @@ -202,7 +181,7 @@ work_resched: syscall_exit_work: ! r0: current_thread_info->flags ! r8: current_thread_info - tst #_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | _TIF_SYSCALL_AUDIT, r0 + tst #_TIF_WORK_SYSCALL_MASK, r0 bt/s work_pending tst #_TIF_NEED_RESCHED, r0 #ifdef CONFIG_TRACE_IRQFLAGS @@ -211,10 +190,8 @@ syscall_exit_work: nop #endif sti - ! XXX setup arguments... mov r15, r4 - mov #1, r5 - mov.l 4f, r0 ! do_syscall_trace + mov.l 8f, r0 ! do_syscall_trace_leave jsr @r0 nop bra resume_userspace @@ -223,12 +200,11 @@ syscall_exit_work: .align 2 syscall_trace_entry: ! Yes it is traced. - ! XXX setup arguments... mov r15, r4 - mov #0, r5 - mov.l 4f, r11 ! Call do_syscall_trace which notifies + mov.l 7f, r11 ! Call do_syscall_trace_enter which notifies jsr @r11 ! superior (will chomp R[0-7]) nop + mov.l r0, @(OFF_R0,r15) ! Save return value ! Reload R0-R4 from kernel stack, where the ! parent may have modified them using ! ptrace(POKEUSR). (Note that R0-R2 are @@ -351,7 +327,7 @@ ENTRY(system_call) ! get_current_thread_info r8, r10 mov.l @(TI_FLAGS,r8), r8 - mov #(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT), r10 + mov #_TIF_WORK_SYSCALL_MASK, r10 tst r10, r8 bf syscall_trace_entry ! @@ -389,8 +365,9 @@ syscall_exit: #endif 2: .long NR_syscalls 3: .long sys_call_table -4: .long do_syscall_trace #ifdef CONFIG_TRACE_IRQFLAGS 5: .long trace_hardirqs_on 6: .long trace_hardirqs_off #endif +7: .long do_syscall_trace_enter +8: .long do_syscall_trace_leave |