From d68041cc9fde550fe6b6a6de1d7a110daff3cb60 Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Tue, 24 Oct 2006 10:12:44 +0200 Subject: [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 Signed-off-by: Linus Torvalds --- arch/avr32/lib/io-readsb.S | 47 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 arch/avr32/lib/io-readsb.S (limited to 'arch/avr32/lib/io-readsb.S') diff --git a/arch/avr32/lib/io-readsb.S b/arch/avr32/lib/io-readsb.S new file mode 100644 index 00000000000..b319d5e7174 --- /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 -- cgit v1.2.3-70-g09d2 From 6af0f5f83169ef215b4579834ddfb2691e8a7bff Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Mon, 6 Nov 2006 14:06:45 +0100 Subject: AVR32: Add missing return instruction in __raw_writesb __raw_writesb ends with a conditional branch, which is obviously wrong. It should return after the last loop terminates. Signed-off-by: Haavard Skinnemoen --- arch/avr32/lib/io-readsb.S | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/avr32/lib/io-readsb.S') diff --git a/arch/avr32/lib/io-readsb.S b/arch/avr32/lib/io-readsb.S index b319d5e7174..2be5da7ed26 100644 --- a/arch/avr32/lib/io-readsb.S +++ b/arch/avr32/lib/io-readsb.S @@ -45,3 +45,5 @@ __raw_readsb: sub r10, 1 st.b r11++, r8 brne 3b + + retal r12 -- cgit v1.2.3-70-g09d2