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