summaryrefslogtreecommitdiffstats
path: root/kernel/arch/avr32/lib/io-writesw.S
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/arch/avr32/lib/io-writesw.S')
-rw-r--r--kernel/arch/avr32/lib/io-writesw.S38
1 files changed, 38 insertions, 0 deletions
diff --git a/kernel/arch/avr32/lib/io-writesw.S b/kernel/arch/avr32/lib/io-writesw.S
new file mode 100644
index 000000000..8c4a53f1c
--- /dev/null
+++ b/kernel/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