m68knommu: NPTL support for uClinux

[pandora-kernel.git] / arch / m68knommu / kernel / sys_m68k.c

diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c
index b67cbc7..923dd4a 100644 (file)
--- a/arch/m68knommu/kernel/sys_m68k.c
+++ b/arch/m68knommu/kernel/sys_m68k.c
@@ -190,3 +190,39 @@ int kernel_execve(const char *filename, char *const argv[], char *const envp[])
                        : "d" (__a), "d" (__b), "d" (__c));
        return __res;
 }
+
+asmlinkage unsigned long sys_get_thread_area(void)
+{
+       return current_thread_info()->tp_value;
+}
+
+asmlinkage int sys_set_thread_area(unsigned long tp)
+{
+       current_thread_info()->tp_value = tp;
+       return 0;
+}
+
+/* This syscall gets its arguments in A0 (mem), D2 (oldval) and
+   D1 (newval).  */
+asmlinkage int
+sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5,
+                     unsigned long __user * mem)
+{
+       struct mm_struct *mm = current->mm;
+       unsigned long mem_value;
+
+       down_read(&mm->mmap_sem);
+
+       mem_value = *mem;
+       if (mem_value == oldval)
+               *mem = newval;
+
+       up_read(&mm->mmap_sem);
+       return mem_value;
+}
+
+asmlinkage int sys_atomic_barrier(void)
+{
+       /* no code needed for uniprocs */
+       return 0;
+}