Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
83 lines
1.0 KiB
ArmAsm
83 lines
1.0 KiB
ArmAsm
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2019, Michael Ellerman, IBM Corp.
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*/
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#include <ppc-asm.h>
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.data
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jump_table:
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.long 0x0
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.long (.Lstate_1 - .Lstate_0)
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.long (.Lstate_2 - .Lstate_0)
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.long (.Lstate_3 - .Lstate_0)
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.long (.Lstate_4 - .Lstate_0)
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.long (.Lstate_5 - .Lstate_0)
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.long (.Lstate_6 - .Lstate_0)
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.long (.Lstate_7 - .Lstate_0)
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.text
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#define ITER_SHIFT 31
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.macro state number
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.balign 32
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.Lstate_\number:
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.if \number==7
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li r3, 0
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.else
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li r3, \number+1
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.endif
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b .Lloop
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.endm
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FUNC_START(pattern_cache_loop)
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li r3, 0
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li r4, 1
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sldi r4, r4, ITER_SHIFT
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.Lloop: cmpdi r4, 0
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beqlr
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addi r4, r4, -1
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ld r6, jump_table@got(%r2)
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sldi r5, r3, 2
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lwax r6, r5, r6
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ld r7, .Lstate_0@got(%r2)
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add r6, r6, r7
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mtctr r6
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bctr
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state 0
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state 1
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state 2
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state 3
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state 4
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state 5
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state 6
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state 7
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FUNC_END(pattern_cache_loop)
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FUNC_START(indirect_branch_loop)
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li r3, 1
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sldi r3, r3, ITER_SHIFT
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1: cmpdi r3, 0
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beqlr
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addi r3, r3, -1
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ld r4, 2f@got(%r2)
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mtctr r4
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bctr
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.balign 32
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2: b 1b
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FUNC_END(indirect_branch_loop)
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