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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) |