53 строки
1.3 KiB
ArmAsm
53 строки
1.3 KiB
ArmAsm
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/* insl_ns.S: input array of 4b words from device port without 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_ns(unsigned int port, void *buf, int n)
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#
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###############################################################################
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.globl __insl_ns
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.type __insl_ns,@function
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__insl_ns:
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andicc.p gr9,#3,gr0,icc0
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setlos #4,gr4
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bne icc0,#0,__insl_ns_misaligned
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subi gr9,#4,gr9
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0:
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ldi.p @(gr8,#0),gr5
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subicc gr10,#1,gr10,icc0
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stu.p gr5,@(gr9,gr4)
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bhi icc0,#2,0b
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bralr
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__insl_ns_misaligned:
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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 @(gr8,#0),gr5
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srli gr5,#24,gr6
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stbu.p gr6,@(gr9,gr4)
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srli gr5,#16,gr6
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stbu.p gr6,@(gr9,gr4)
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srli gr5,#8,gr6
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stbu.p gr6,@(gr9,gr4)
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subicc gr10,#1,gr10,icc0
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stbu.p gr5,@(gr9,gr4)
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bhi icc0,#2,0b
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bralr
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.size __insl_ns, .-__insl_ns
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