aboutsummaryrefslogtreecommitdiff
path: root/arch/avr32/lib/io-readsl.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/avr32/lib/io-readsl.S')
-rw-r--r--arch/avr32/lib/io-readsl.S24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/avr32/lib/io-readsl.S b/arch/avr32/lib/io-readsl.S
new file mode 100644
index 00000000000..b103511ed6c
--- /dev/null
+++ b/arch/avr32/lib/io-readsl.S
@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+ .global __raw_readsl
+ .type __raw_readsl,@function
+__raw_readsl:
+ cp.w r10, 0
+ reteq r12
+
+ /*
+ * If r11 isn't properly aligned, we might get an exception on
+ * some implementations. But there's not much we can do about it.
+ */
+1: ld.w r8, r12[0]
+ sub r10, 1
+ st.w r11++, r8
+ brne 1b
+
+ retal r12