1 files changed, 88 insertions, 0 deletions

diff --git a/arch/m32r/lib/getuser.S b/arch/m32r/lib/getuser.S
new file mode 100644
index 000000000000..58a0db055c5c
--- /dev/null
+++ b/arch/m32r/lib/getuser.S
@@ -0,0 +1,88 @@
+/*
+ * __get_user functions.
+ *
+ * (C) Copyright 2001 Hirokazu Takata
+ *
+ * These functions have a non-standard call interface
+ * to make them more efficient, especially as they
+ * return an error value in addition to the "real"
+ * return value.
+ */
+
+#include <linux/config.h>
+
+/*
+ * __get_user_X
+ *
+ * Inputs:      r0 contains the address
+ *
+ * Outputs:     r0 is error code (0 or -EFAULT)
+ *              r1 contains zero-extended value
+ *
+ * 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 __get_user_1
+__get_user_1:
+1:      ldub    r1, @r0             ||  ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __get_user_2
+__get_user_2:
+2:      lduh    r1, @r0             ||  ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __get_user_4
+__get_user_4:
+3:      ld      r1, @r0             ||  ldi     r0, #0
+        jmp     r14
+
+bad_get_user:
+        ldi     r1, #0              ||  ldi     r0, #-14
+        jmp     r14
+
+#else /* not CONFIG_ISA_DUAL_ISSUE */
+
+        .text
+        .balign 4
+        .globl __get_user_1
+__get_user_1:
+1:      ldub    r1, @r0
+        ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __get_user_2
+__get_user_2:
+2:      lduh    r1, @r0
+        ldi     r0, #0
+        jmp     r14
+
+        .balign 4
+        .globl __get_user_4
+__get_user_4:
+3:      ld      r1, @r0
+        ldi     r0, #0
+        jmp     r14
+
+bad_get_user:
+        ldi     r1, #0
+        ldi     r0, #-14
+        jmp     r14
+
+#endif /* not CONFIG_ISA_DUAL_ISSUE */
+
+.section __ex_table,"a"
+        .long 1b,bad_get_user
+        .long 2b,bad_get_user
+        .long 3b,bad_get_user
+.previous
+
+        .end