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d98b90ea22
Renames logical shift macros, 'push' and 'pull', defined in arch/arm/include/asm/assembler.h, into 'lspush' and 'lspull'. That eliminates name conflict between 'push' logical shift macro and 'push' instruction mnemonic. That allows assembler.h to be included in .S files that use 'push' instruction. Suggested-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
68 lines
1.3 KiB
ArmAsm
68 lines
1.3 KiB
ArmAsm
/*
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* linux/arch/arm/lib/io-writesl.S
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*
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* Copyright (C) 1995-2000 Russell King
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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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#include <linux/linkage.h>
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#include <asm/assembler.h>
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ENTRY(__raw_writesl)
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teq r2, #0 @ do we have to check for the zero len?
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moveq pc, lr
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ands ip, r1, #3
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bne 3f
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subs r2, r2, #4
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bmi 2f
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stmfd sp!, {r4, lr}
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1: ldmia r1!, {r3, r4, ip, lr}
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subs r2, r2, #4
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str r3, [r0, #0]
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str r4, [r0, #0]
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str ip, [r0, #0]
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str lr, [r0, #0]
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bpl 1b
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ldmfd sp!, {r4, lr}
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2: movs r2, r2, lsl #31
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ldmcsia r1!, {r3, ip}
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strcs r3, [r0, #0]
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ldrne r3, [r1, #0]
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strcs ip, [r0, #0]
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strne r3, [r0, #0]
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mov pc, lr
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3: bic r1, r1, #3
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ldr r3, [r1], #4
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cmp ip, #2
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blt 5f
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bgt 6f
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4: mov ip, r3, lspull #16
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ldr r3, [r1], #4
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subs r2, r2, #1
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orr ip, ip, r3, lspush #16
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str ip, [r0]
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bne 4b
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mov pc, lr
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5: mov ip, r3, lspull #8
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ldr r3, [r1], #4
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subs r2, r2, #1
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orr ip, ip, r3, lspush #24
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str ip, [r0]
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bne 5b
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mov pc, lr
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6: mov ip, r3, lspull #24
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ldr r3, [r1], #4
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subs r2, r2, #1
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orr ip, ip, r3, lspush #8
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str ip, [r0]
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bne 6b
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mov pc, lr
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ENDPROC(__raw_writesl)
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