| Paul Mackerras | 350779a | 2017-08-30 14:12:27 +1000 | [diff] [blame] | 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) |
| 22 | 1: lq r6, 0(r3) |
| 23 | std r6, 0(r4) |
| 24 | std r7, 8(r4) |
| 25 | li r3, 0 |
| 26 | blr |
| 27 | 2: 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) |
| 33 | 1: stq r4, 0(r3) |
| 34 | li r3, 0 |
| 35 | blr |
| 36 | 2: li r3, -EFAULT |
| 37 | blr |
| 38 | EX_TABLE(1b, 2b) |
| 39 | |
| 40 | /* do_lqarx(unsigned long ea, unsigned long *regs) */ |
| 41 | _GLOBAL(do_lqarx) |
| 42 | 1: PPC_LQARX(6, 0, 3, 0) |
| 43 | std r6, 0(r4) |
| 44 | std r7, 8(r4) |
| 45 | li r3, 0 |
| 46 | blr |
| 47 | 2: 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) |
| 55 | 1: PPC_STQCX(4, 0, 3) |
| 56 | mfcr r5 |
| 57 | stw r5, 0(r6) |
| 58 | li r3, 0 |
| 59 | blr |
| 60 | 2: li r3, -EFAULT |
| 61 | blr |
| 62 | EX_TABLE(1b, 2b) |