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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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46 lines
1.2 KiB
ArmAsm
46 lines
1.2 KiB
ArmAsm
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/* __ucmpdi2.S: 64-bit unsigned compare
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*
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* Copyright (C) 2006 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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# int __ucmpdi2(unsigned long long a [GR8:GR9],
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# unsigned long long b [GR10:GR11])
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#
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# - returns 0, 1, or 2 as a <, =, > b respectively.
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#
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###############################################################################
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.globl __ucmpdi2
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.type __ucmpdi2,@function
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__ucmpdi2:
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or.p gr8,gr0,gr4
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subcc gr8,gr10,gr0,icc0
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setlos.p #0,gr8
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bclr icc0,#2 ; a.msw < b.msw
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setlos.p #2,gr8
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bhilr icc0,#0 ; a.msw > b.msw
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subcc.p gr9,gr11,gr0,icc1
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setlos #0,gr8
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setlos.p #2,gr9
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setlos #1,gr7
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cknc icc1,cc6
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cor.p gr9,gr0,gr8, cc6,#1
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cckls icc1,cc4, cc6,#1
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andcr cc6,cc4,cc4
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cor gr7,gr0,gr8, cc4,#1
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bralr
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.size __ucmpdi2, .-__ucmpdi2
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