tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
[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>
authored by
Haavard Skinnemoen
and committed by
Linus Torvalds
d68041cc
065834ab
+109
+9
arch/avr32/kernel/avr32_ksyms.c
+9
arch/avr32/kernel/avr32_ksyms.c
···
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/io.h>
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#include <linux/module.h>
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#include <asm/checksum.h>
···
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EXPORT_SYMBOL(find_first_bit);
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EXPORT_SYMBOL(find_next_bit);
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EXPORT_SYMBOL(generic_find_next_zero_le_bit);
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/* I/O primitives (lib/io-*.S) */
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EXPORT_SYMBOL(__raw_readsb);
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EXPORT_SYMBOL(__raw_readsw);
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EXPORT_SYMBOL(__raw_readsl);
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EXPORT_SYMBOL(__raw_writesb);
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EXPORT_SYMBOL(__raw_writesw);
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EXPORT_SYMBOL(__raw_writesl);
+1
arch/avr32/lib/Makefile
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arch/avr32/lib/Makefile
+47
arch/avr32/lib/io-readsb.S
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arch/avr32/lib/io-readsb.S
···
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/*
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* Copyright (C) 2004-2006 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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.text
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.Lnot_word_aligned:
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1: ld.ub r8, r12[0]
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sub r10, 1
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st.b r11++, r8
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reteq r12
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tst r11, r9
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brne 1b
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/* fall through */
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.global __raw_readsb
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.type __raw_readsb,@function
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__raw_readsb:
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cp.w r10, 0
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mov r9, 3
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reteq r12
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tst r11, r9
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brne .Lnot_word_aligned
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sub r10, 4
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brlt 2f
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1: ldins.b r8:t, r12[0]
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ldins.b r8:u, r12[0]
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ldins.b r8:l, r12[0]
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ldins.b r8:b, r12[0]
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st.w r11++, r8
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sub r10, 4
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brge 1b
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2: sub r10, -4
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reteq r12
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3: ld.uh r8, r12[0]
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sub r10, 1
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st.b r11++, r8
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brne 3b
+52
arch/avr32/lib/io-writesb.S
+52
arch/avr32/lib/io-writesb.S
···
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/*
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* Copyright (C) 2004-2006 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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.text
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.Lnot_word_aligned:
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1: ld.ub r8, r11++
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sub r10, 1
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st.b r12[0], r8
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reteq r12
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tst r11, r9
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brne 1b
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/* fall through */
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.global __raw_writesb
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.type __raw_writesb,@function
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__raw_writesb:
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cp.w r10, 0
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mov r9, 3
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reteq r12
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tst r11, r9
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brne .Lnot_word_aligned
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sub r10, 4
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brlt 2f
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1: ld.w r8, r11++
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bfextu r9, r8, 24, 8
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st.b r12[0], r9
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bfextu r9, r8, 16, 8
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st.b r12[0], r9
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bfextu r9, r8, 8, 8
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st.b r12[0], r9
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st.b r12[0], r8
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sub r10, 4
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brge 1b
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2: sub r10, -4
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reteq r12
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3: ld.ub r8, r11++
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sub r10, 1
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st.b r12[0], r8
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brne 3b
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retal r12