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https://github.com/brain-hackers/linux-brain.git
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d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
57 lines
1.1 KiB
ArmAsm
57 lines
1.1 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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*/
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#include <linux/linkage.h>
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#define SMALL 7 /* Must be at least 6 to deal with alignment/loop issues. */
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ENTRY_CFI(memset)
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mov_s r4,r0
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or r12,r0,r2
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bmsk.f r12,r12,1
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extb_s r1,r1
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asl r3,r1,8
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beq.d .Laligned
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or_s r1,r1,r3
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brls r2,SMALL,.Ltiny
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add r3,r2,r0
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stb r1,[r3,-1]
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bclr_s r3,r3,0
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stw r1,[r3,-2]
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bmsk.f r12,r0,1
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add_s r2,r2,r12
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sub.ne r2,r2,4
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stb.ab r1,[r4,1]
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and r4,r4,-2
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stw.ab r1,[r4,2]
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and r4,r4,-4
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.Laligned: ; This code address should be aligned for speed.
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asl r3,r1,16
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lsr.f lp_count,r2,2
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or_s r1,r1,r3
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lpne .Loop_end
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st.ab r1,[r4,4]
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.Loop_end:
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j_s [blink]
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.balign 4
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.Ltiny:
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mov.f lp_count,r2
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lpne .Ltiny_end
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stb.ab r1,[r4,1]
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.Ltiny_end:
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j_s [blink]
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END_CFI(memset)
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; memzero: @r0 = mem, @r1 = size_t
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; memset: @r0 = mem, @r1 = char, @r2 = size_t
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ENTRY_CFI(memzero)
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; adjust bzero args to memset args
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mov r2, r1
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mov r1, 0
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b memset ;tail call so need to tinker with blink
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END_CFI(memzero)
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