1/* 2 * Quadword loads and stores 3 * for use in instruction emulation. 4 * 5 * Copyright 2017 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12 13#include <asm/processor.h> 14#include <asm/ppc_asm.h> 15#include <asm/ppc-opcode.h> 16#include <asm/reg.h> 17#include <asm/asm-offsets.h> 18#include <linux/errno.h> 19 20/* do_lq(unsigned long ea, unsigned long *regs) */ 21_GLOBAL(do_lq) 221: lq r6, 0(r3) 23 std r6, 0(r4) 24 std r7, 8(r4) 25 li r3, 0 26 blr 272: li r3, -EFAULT 28 blr 29 EX_TABLE(1b, 2b) 30 31/* do_stq(unsigned long ea, unsigned long val0, unsigned long val1) */ 32_GLOBAL(do_stq) 331: stq r4, 0(r3) 34 li r3, 0 35 blr 362: li r3, -EFAULT 37 blr 38 EX_TABLE(1b, 2b) 39 40/* do_lqarx(unsigned long ea, unsigned long *regs) */ 41_GLOBAL(do_lqarx) 421: PPC_LQARX(6, 0, 3, 0) 43 std r6, 0(r4) 44 std r7, 8(r4) 45 li r3, 0 46 blr 472: li r3, -EFAULT 48 blr 49 EX_TABLE(1b, 2b) 50 51/* do_stqcx(unsigned long ea, unsigned long val0, unsigned long val1, 52 unsigned int *crp) */ 53 54_GLOBAL(do_stqcx) 551: PPC_STQCX(4, 0, 3) 56 mfcr r5 57 stw r5, 0(r6) 58 li r3, 0 59 blr 602: li r3, -EFAULT 61 blr 62 EX_TABLE(1b, 2b) 63