1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _SELFTESTS_POWERPC_INSTRUCTIONS_H
3#define _SELFTESTS_POWERPC_INSTRUCTIONS_H
4
5#include <stdio.h>
6#include <stdlib.h>
7
8/* This defines the "copy" instruction from Power ISA 3.0 Book II, section 4.4. */
9#define __COPY(RA, RB, L) \
10	(0x7c00060c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10))
11#define COPY(RA, RB, L) \
12	.long __COPY((RA), (RB), (L))
13
14static inline void copy(void *i)
15{
16	asm volatile(str(COPY(0, %0, 0))";"
17			:
18			: "b" (i)
19			: "memory"
20		    );
21}
22
23static inline void copy_first(void *i)
24{
25	asm volatile(str(COPY(0, %0, 1))";"
26			:
27			: "b" (i)
28			: "memory"
29		    );
30}
31
32/* This defines the "paste" instruction from Power ISA 3.0 Book II, section 4.4. */
33#define __PASTE(RA, RB, L, RC) \
34	(0x7c00070c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10) | (RC) << (31-31))
35#define PASTE(RA, RB, L, RC) \
36	.long __PASTE((RA), (RB), (L), (RC))
37
38static inline int paste(void *i)
39{
40	int cr;
41
42	asm volatile(str(PASTE(0, %1, 0, 0))";"
43			"mfcr %0;"
44			: "=r" (cr)
45			: "b" (i)
46			: "memory"
47		    );
48	return cr;
49}
50
51static inline int paste_last(void *i)
52{
53	int cr;
54
55	asm volatile(str(PASTE(0, %1, 1, 1))";"
56			"mfcr %0;"
57			: "=r" (cr)
58			: "b" (i)
59			: "memory"
60		    );
61	return cr;
62}
63
64#define PPC_INST_COPY                  __COPY(0, 0, 0)
65#define PPC_INST_COPY_FIRST            __COPY(0, 0, 1)
66#define PPC_INST_PASTE                 __PASTE(0, 0, 0, 0)
67#define PPC_INST_PASTE_LAST            __PASTE(0, 0, 1, 1)
68
69#endif /* _SELFTESTS_POWERPC_INSTRUCTIONS_H */
70