1 files changed, 44 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 2dd47d2dd998..2d35d83961b2 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -708,6 +708,50 @@ int get_fpexc_mode(struct task_struct *tsk, unsigned long adr)
         return put_user(val, (unsigned int __user *) adr);
 }
 
+int set_endian(struct task_struct *tsk, unsigned int val)
+{
+        struct pt_regs *regs = tsk->thread.regs;
+
+        if ((val == PR_ENDIAN_LITTLE && !cpu_has_feature(CPU_FTR_REAL_LE)) ||
+            (val == PR_ENDIAN_PPC_LITTLE && !cpu_has_feature(CPU_FTR_PPC_LE)))
+                return -EINVAL;
+
+        if (regs == NULL)
+                return -EINVAL;
+
+        if (val == PR_ENDIAN_BIG)
+                regs->msr &= ~MSR_LE;
+        else if (val == PR_ENDIAN_LITTLE || val == PR_ENDIAN_PPC_LITTLE)
+                regs->msr |= MSR_LE;
+        else
+                return -EINVAL;
+
+        return 0;
+}
+
+int get_endian(struct task_struct *tsk, unsigned long adr)
+{
+        struct pt_regs *regs = tsk->thread.regs;
+        unsigned int val;
+
+        if (!cpu_has_feature(CPU_FTR_PPC_LE) &&
+            !cpu_has_feature(CPU_FTR_REAL_LE))
+                return -EINVAL;
+
+        if (regs == NULL)
+                return -EINVAL;
+
+        if (regs->msr & MSR_LE) {
+                if (cpu_has_feature(CPU_FTR_REAL_LE))
+                        val = PR_ENDIAN_LITTLE;
+                else
+                        val = PR_ENDIAN_PPC_LITTLE;
+        } else
+                val = PR_ENDIAN_BIG;
+
+        return put_user(val, (unsigned int __user *)adr);
+}
+
 #define TRUNC_PTR(x)    ((typeof(x))(((unsigned long)(x)) & 0xffffffff))
 
 int sys_clone(unsigned long clone_flags, unsigned long usp,