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