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. <pa
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
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 *r
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 va
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)
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