1 files changed, 84 insertions, 0 deletions

diff --git a/arch/m32r/lib/putuser.S b/arch/m32r/lib/putuser.S
new file mode 100644
index 000000000000..218154cc3890
--- /dev/null
+++ b/arch/m32r/lib/putuser.S
@@ -0,0 +1,84 @@
+/*
+ * __put_user functions.
+ *
+ * (C) Copyright 1998 Linus Torvalds
+ * (C) Copyright 2001 Hirokazu Takata
+ *
+ * These functions have a non-standard call interface
+ * to make them more efficient.
+ */
+
+#include <linux/config.h>
+
+/*
+ * __put_user_X
+ *
+ * Inputs:      r0 contains the address
+ *              r1 contains the value
+ *
+ * Outputs:     r0 is error code (0 or -EFAULT)
+ *              r1 is corrupted (will contain "current_task").
+ *
+ * These functions should not modify any other registers,
+ * as they get called from within inline assembly.
+ */
+
+#ifdef CONFIG_ISA_DUAL_ISSUE
+
+        .text
+        .balign 4
+        .globl __put_user_1
+__put_user_1:
+1:      stb     r1, @r0             ||  ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __put_user_2
+__put_user_2:
+2:      sth     r1, @r0             ||  ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __put_user_4
+__put_user_4:
+3:      st      r1, @r0             ||  ldi     r0, #0
+        jmp     r14
+
+bad_put_user:
+        ldi     r0, #-14            ||  jmp     r14
+
+#else /* not CONFIG_ISA_DUAL_ISSUE */
+
+        .text
+        .balign 4
+        .globl __put_user_1
+__put_user_1:
+1:      stb     r1, @r0
+        ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __put_user_2
+__put_user_2:
+2:      sth     r1, @r0
+        ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __put_user_4
+__put_user_4:
+3:      st      r1, @r0
+        ldi     r0, #0
+        jmp     r14
+
+bad_put_user:
+        ldi     r0, #-14
+        jmp     r14
+
+#endif /* not CONFIG_ISA_DUAL_ISSUE */
+
+.section __ex_table,"a"
+        .long 1b,bad_put_user
+        .long 2b,bad_put_user
+        .long 3b,bad_put_user
+.previous