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2874c5fd28
Based on 1 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 as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
45 lines
843 B
ArmAsm
45 lines
843 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* "Indirect" DCR access
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*
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* Copyright (c) 2004 Eugene Surovegin <ebs@ebshome.net>
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*/
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#include <asm/ppc_asm.h>
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#include <asm/processor.h>
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#include <asm/bug.h>
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#include <asm/export.h>
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#define DCR_ACCESS_PROLOG(table) \
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cmpli cr0,r3,1024; \
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rlwinm r3,r3,4,18,27; \
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lis r5,table@h; \
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ori r5,r5,table@l; \
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add r3,r3,r5; \
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bge- 1f; \
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mtctr r3; \
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bctr; \
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1: trap; \
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EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0; \
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blr
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_GLOBAL(__mfdcr)
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DCR_ACCESS_PROLOG(__mfdcr_table)
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EXPORT_SYMBOL(__mfdcr)
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_GLOBAL(__mtdcr)
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DCR_ACCESS_PROLOG(__mtdcr_table)
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EXPORT_SYMBOL(__mtdcr)
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__mfdcr_table:
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mfdcr r3,0; blr
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__mtdcr_table:
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mtdcr 0,r4; blr
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dcr = 1
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.rept 1023
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mfdcr r3,dcr; blr
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mtdcr dcr,r4; blr
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dcr = dcr + 1
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.endr
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