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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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63 lines
1.3 KiB
ArmAsm
63 lines
1.3 KiB
ArmAsm
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/*
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* Quadword loads and stores
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* for use in instruction emulation.
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*
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* Copyright 2017 Paul Mackerras, IBM Corp. <paulus@au1.ibm.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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#include <asm/processor.h>
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#include <asm/ppc_asm.h>
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#include <asm/ppc-opcode.h>
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#include <asm/reg.h>
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#include <asm/asm-offsets.h>
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#include <linux/errno.h>
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/* do_lq(unsigned long ea, unsigned long *regs) */
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_GLOBAL(do_lq)
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1: lq r6, 0(r3)
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std r6, 0(r4)
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std r7, 8(r4)
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li r3, 0
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blr
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2: li r3, -EFAULT
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blr
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EX_TABLE(1b, 2b)
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/* do_stq(unsigned long ea, unsigned long val0, unsigned long val1) */
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_GLOBAL(do_stq)
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1: stq r4, 0(r3)
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li r3, 0
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blr
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2: li r3, -EFAULT
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blr
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EX_TABLE(1b, 2b)
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/* do_lqarx(unsigned long ea, unsigned long *regs) */
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_GLOBAL(do_lqarx)
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1: PPC_LQARX(6, 0, 3, 0)
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std r6, 0(r4)
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std r7, 8(r4)
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li r3, 0
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blr
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2: li r3, -EFAULT
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blr
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EX_TABLE(1b, 2b)
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/* do_stqcx(unsigned long ea, unsigned long val0, unsigned long val1,
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unsigned int *crp) */
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_GLOBAL(do_stqcx)
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1: PPC_STQCX(4, 0, 3)
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mfcr r5
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stw r5, 0(r6)
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li r3, 0
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blr
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2: li r3, -EFAULT
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blr
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EX_TABLE(1b, 2b)
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