1 files changed, 38 insertions, 0 deletions
diff --git a/arch/avr32/lib/io-writesw.S b/arch/avr32/lib/io-writesw.S
new file mode 100644
index 00000000000..8c4a53f1c52
--- /dev/null
+++ b/arch/avr32/lib/io-writesw.S
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+.Lnot_word_aligned:
+	ld.uh	r8, r11++
+	sub	r10, 1
+	st.h	r12[0], r8
+
+	.global	__raw_writesw
+	.type	__raw_writesw,@function
+__raw_writesw:
+	cp.w	r10, 0
+	mov	r9, 3
+	reteq	r12
+	tst	r11, r9
+	brne	.Lnot_word_aligned
+
+	sub	r10, 2
+	brlt	2f
+
+1:	ld.w	r8, r11++
+	bfextu	r9, r8, 16, 16
+	st.h	r12[0], r9
+	st.h	r12[0], r8
+	sub	r10, 2
+	brge	1b
+
+2:	sub	r10, -2
+	reteq	r12
+
+	ld.uh	r8, r11++
+	st.h	r12[0], r8
+	retal	r12