40 lines
1.1 KiB
ArmAsm
40 lines
1.1 KiB
ArmAsm
/* insl_sw.S: input array of 4b words from device port with byte swapping
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*
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* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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.text
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.p2align 4
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###############################################################################
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#
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# void __insl_sw(unsigned int port, void *buf, int n)
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#
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###############################################################################
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.globl __insl_sw
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.type __insl_sw,@function
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__insl_sw:
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subi.p gr9,#1,gr9
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setlos #1,gr4
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0:
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ldi.p @(gr8,#0),gr5 ; get 0xAABBCCDD
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subicc gr10,#1,gr10,icc0
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stbu.p gr5,@(gr9,gr4) ; write 0xDD
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srli gr5,#8,gr5
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stbu.p gr5,@(gr9,gr4) ; write 0xCC
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srli gr5,#8,gr5
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stbu.p gr5,@(gr9,gr4) ; write 0xBB
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srli gr5,#8,gr5
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stbu.p gr5,@(gr9,gr4) ; write 0xAA
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bhi icc0,#2,0b
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bralr
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.size __insl_sw, .-__insl_sw
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