m68knommu: fix strace support for 68328/68360

strace enabled is marked using the `flags' field of the `thread_info' struct.
68360 version of entry.S did test a wrong bit in a wrong structure
(task_struct).

68328 version of entry.S did test the right bit in the right structure,
but wrongly, because the `flags' field is 32 bit wide, while the used
assembler insn (btst) only accesses a 8 bit byte in memory.

Fix both using code already used in the coldfire version of entry.S

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

diff --git a/arch/m68knommu/platform/68328/entry.S b/arch/m68knommu/platform/68328/entry.S
index 9d80d2c..31a0917 100644 (file)
--- a/arch/m68knommu/platform/68328/entry.S
+++ b/arch/m68knommu/platform/68328/entry.S
@@ -80,7 +80,7 @@ ENTRY(system_call)
        movel   %sp,%d1                 /* get thread_info pointer */
        andl    #-THREAD_SIZE,%d1
        movel   %d1,%a2
-       btst    #TIF_SYSCALL_TRACE,%a2@(TI_FLAGS)
+       btst    #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8)
        jne     do_trace
        cmpl    #NR_syscalls,%d0
        jcc     badsys

diff --git a/arch/m68knommu/platform/68360/entry.S b/arch/m68knommu/platform/68360/entry.S
index 6d3460a..d5ad408 100644 (file)
--- a/arch/m68knommu/platform/68360/entry.S
+++ b/arch/m68knommu/platform/68360/entry.S
@@ -71,7 +71,12 @@ ENTRY(system_call)
        jbsr    set_esp0
        addql   #4,%sp
 
-       btst    #PF_TRACESYS_BIT,%a2@(TASK_FLAGS+PF_TRACESYS_OFF)
+       movel   %sp@(PT_OFF_ORIG_D0),%d0
+
+       movel   %sp,%d1                 /* get thread_info pointer */
+       andl    #-THREAD_SIZE,%d1
+       movel   %d1,%a2
+       btst    #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8)
        jne     do_trace
        cmpl    #NR_syscalls,%d0
        jcc     badsys