1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Quadword loads and stores |
4 | * for use in instruction emulation. |
5 | * |
6 | * Copyright 2017 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> |
7 | */ |
8 | |
9 | #include <asm/processor.h> |
10 | #include <asm/ppc_asm.h> |
11 | #include <asm/ppc-opcode.h> |
12 | #include <asm/reg.h> |
13 | #include <asm/asm-offsets.h> |
14 | #include <linux/errno.h> |
15 | |
16 | /* do_lq(unsigned long ea, unsigned long *regs) */ |
17 | _GLOBAL(do_lq) |
18 | 1: lq r6, 0(r3) |
19 | std r6, 0(r4) |
20 | std r7, 8(r4) |
21 | li r3, 0 |
22 | blr |
23 | 2: li r3, -EFAULT |
24 | blr |
25 | EX_TABLE(1b, 2b) |
26 | |
27 | /* do_stq(unsigned long ea, unsigned long val0, unsigned long val1) */ |
28 | _GLOBAL(do_stq) |
29 | 1: stq r4, 0(r3) |
30 | li r3, 0 |
31 | blr |
32 | 2: li r3, -EFAULT |
33 | blr |
34 | EX_TABLE(1b, 2b) |
35 | |
36 | /* do_lqarx(unsigned long ea, unsigned long *regs) */ |
37 | _GLOBAL(do_lqarx) |
38 | 1: PPC_LQARX(6, 0, 3, 0) |
39 | std r6, 0(r4) |
40 | std r7, 8(r4) |
41 | li r3, 0 |
42 | blr |
43 | 2: li r3, -EFAULT |
44 | blr |
45 | EX_TABLE(1b, 2b) |
46 | |
47 | /* do_stqcx(unsigned long ea, unsigned long val0, unsigned long val1, |
48 | unsigned int *crp) */ |
49 | |
50 | _GLOBAL(do_stqcx) |
51 | 1: PPC_STQCX(4, 0, 3) |
52 | mfcr r5 |
53 | stw r5, 0(r6) |
54 | li r3, 0 |
55 | blr |
56 | 2: li r3, -EFAULT |
57 | blr |
58 | EX_TABLE(1b, 2b) |
59 | |