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| author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2006-10-24 10:12:44 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-25 20:26:33 -0700 |
| commit | d68041cc9fde550fe6b6a6de1d7a110daff3cb60 (patch) | |
| tree | 1b712054a6466b7901339ebaba37ce27c7f2b1a0 /arch/avr32/lib | |
| parent | 065834ab3988fece5608088e83724891c8190a2f (diff) | |
| download | op-kernel-dev-d68041cc9fde550fe6b6a6de1d7a110daff3cb60.zip op-kernel-dev-d68041cc9fde550fe6b6a6de1d7a110daff3cb60.tar.gz | |
[PATCH] AVR32: Implement and export __raw_{read,write}s[bwl]
Implement __raw_readsb and __raw_writesb. Export __raw_reads[bwl]
and __raw_writes[bwl] for use by modules.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/avr32/lib')
| -rw-r--r-- | arch/avr32/lib/Makefile | 1 | ||||
| -rw-r--r-- | arch/avr32/lib/io-readsb.S | 47 | ||||
| -rw-r--r-- | arch/avr32/lib/io-writesb.S | 52 |
3 files changed, 100 insertions, 0 deletions
diff --git a/arch/avr32/lib/Makefile b/arch/avr32/lib/Makefile index 09ac43e..084d95b 100644 --- a/arch/avr32/lib/Makefile +++ b/arch/avr32/lib/Makefile @@ -7,4 +7,5 @@ lib-y += strncpy_from_user.o strnlen_user.o lib-y += delay.o memset.o memcpy.o findbit.o lib-y += csum_partial.o csum_partial_copy_generic.o lib-y += io-readsw.o io-readsl.o io-writesw.o io-writesl.o +lib-y += io-readsb.o io-writesb.o lib-y += __avr32_lsl64.o __avr32_lsr64.o __avr32_asr64.o diff --git a/arch/avr32/lib/io-readsb.S b/arch/avr32/lib/io-readsb.S new file mode 100644 index 0000000..b319d5e --- /dev/null +++ b/arch/avr32/lib/io-readsb.S @@ -0,0 +1,47 @@ +/* + * 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. + */ + + .text +.Lnot_word_aligned: +1: ld.ub r8, r12[0] + sub r10, 1 + st.b r11++, r8 + reteq r12 + tst r11, r9 + brne 1b + + /* fall through */ + + .global __raw_readsb + .type __raw_readsb,@function +__raw_readsb: + cp.w r10, 0 + mov r9, 3 + reteq r12 + + tst r11, r9 + brne .Lnot_word_aligned + + sub r10, 4 + brlt 2f + +1: ldins.b r8:t, r12[0] + ldins.b r8:u, r12[0] + ldins.b r8:l, r12[0] + ldins.b r8:b, r12[0] + st.w r11++, r8 + sub r10, 4 + brge 1b + +2: sub r10, -4 + reteq r12 + +3: ld.uh r8, r12[0] + sub r10, 1 + st.b r11++, r8 + brne 3b diff --git a/arch/avr32/lib/io-writesb.S b/arch/avr32/lib/io-writesb.S new file mode 100644 index 0000000..b4ebaac --- /dev/null +++ b/arch/avr32/lib/io-writesb.S @@ -0,0 +1,52 @@ +/* + * 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. + */ + + .text +.Lnot_word_aligned: +1: ld.ub r8, r11++ + sub r10, 1 + st.b r12[0], r8 + reteq r12 + tst r11, r9 + brne 1b + + /* fall through */ + + .global __raw_writesb + .type __raw_writesb,@function +__raw_writesb: + cp.w r10, 0 + mov r9, 3 + reteq r12 + + tst r11, r9 + brne .Lnot_word_aligned + + sub r10, 4 + brlt 2f + +1: ld.w r8, r11++ + bfextu r9, r8, 24, 8 + st.b r12[0], r9 + bfextu r9, r8, 16, 8 + st.b r12[0], r9 + bfextu r9, r8, 8, 8 + st.b r12[0], r9 + st.b r12[0], r8 + sub r10, 4 + brge 1b + +2: sub r10, -4 + reteq r12 + +3: ld.ub r8, r11++ + sub r10, 1 + st.b r12[0], r8 + brne 3b + + retal r12 |
