diff options
Diffstat (limited to 'kernel/arch/avr32/lib/io-writesw.S')
| -rw-r--r-- | kernel/arch/avr32/lib/io-writesw.S | 38 |
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 |