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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/* This defines the prefixed load/store instructions */
70#ifdef __ASSEMBLER__
71# define stringify_in_c(...) __VA_ARGS__
72#else
73# define __stringify_in_c(...) #__VA_ARGS__
74# define stringify_in_c(...) __stringify_in_c(__VA_ARGS__) " "
75#endif
76
77#define __PPC_RA(a) (((a) & 0x1f) << 16)
78#define __PPC_RS(s) (((s) & 0x1f) << 21)
79#define __PPC_RT(t) __PPC_RS(t)
80#define __PPC_PREFIX_R(r) (((r) & 0x1) << 20)
81
82#define PPC_PREFIX_MLS 0x06000000
83#define PPC_PREFIX_8LS 0x04000000
84
85#define PPC_INST_LBZ 0x88000000
86#define PPC_INST_LHZ 0xa0000000
87#define PPC_INST_LHA 0xa8000000
88#define PPC_INST_LWZ 0x80000000
89#define PPC_INST_STB 0x98000000
90#define PPC_INST_STH 0xb0000000
91#define PPC_INST_STW 0x90000000
92#define PPC_INST_STD 0xf8000000
93#define PPC_INST_LFS 0xc0000000
94#define PPC_INST_LFD 0xc8000000
95#define PPC_INST_STFS 0xd0000000
96#define PPC_INST_STFD 0xd8000000
97
98#define PREFIX_MLS(instr, t, a, r, d) stringify_in_c(.balign 64, , 4;) \
99 stringify_in_c(.long PPC_PREFIX_MLS | \
100 __PPC_PREFIX_R(r) | \
101 (((d) >> 16) & 0x3ffff);) \
102 stringify_in_c(.long (instr) | \
103 __PPC_RT(t) | \
104 __PPC_RA(a) | \
105 ((d) & 0xffff);\n)
106
107#define PREFIX_8LS(instr, t, a, r, d) stringify_in_c(.balign 64, , 4;) \
108 stringify_in_c(.long PPC_PREFIX_8LS | \
109 __PPC_PREFIX_R(r) | \
110 (((d) >> 16) & 0x3ffff);) \
111 stringify_in_c(.long (instr) | \
112 __PPC_RT(t) | \
113 __PPC_RA(a) | \
114 ((d) & 0xffff);\n)
115
116/* Prefixed Integer Load/Store instructions */
117#define PLBZ(t, a, r, d) PREFIX_MLS(PPC_INST_LBZ, t, a, r, d)
118#define PLHZ(t, a, r, d) PREFIX_MLS(PPC_INST_LHZ, t, a, r, d)
119#define PLHA(t, a, r, d) PREFIX_MLS(PPC_INST_LHA, t, a, r, d)
120#define PLWZ(t, a, r, d) PREFIX_MLS(PPC_INST_LWZ, t, a, r, d)
121#define PLWA(t, a, r, d) PREFIX_8LS(0xa4000000, t, a, r, d)
122#define PLD(t, a, r, d) PREFIX_8LS(0xe4000000, t, a, r, d)
123#define PLQ(t, a, r, d) PREFIX_8LS(0xe0000000, t, a, r, d)
124#define PSTB(s, a, r, d) PREFIX_MLS(PPC_INST_STB, s, a, r, d)
125#define PSTH(s, a, r, d) PREFIX_MLS(PPC_INST_STH, s, a, r, d)
126#define PSTW(s, a, r, d) PREFIX_MLS(PPC_INST_STW, s, a, r, d)
127#define PSTD(s, a, r, d) PREFIX_8LS(0xf4000000, s, a, r, d)
128#define PSTQ(s, a, r, d) PREFIX_8LS(0xf0000000, s, a, r, d)
129
130/* Prefixed Floating-Point Load/Store Instructions */
131#define PLFS(frt, a, r, d) PREFIX_MLS(PPC_INST_LFS, frt, a, r, d)
132#define PLFD(frt, a, r, d) PREFIX_MLS(PPC_INST_LFD, frt, a, r, d)
133#define PSTFS(frs, a, r, d) PREFIX_MLS(PPC_INST_STFS, frs, a, r, d)
134#define PSTFD(frs, a, r, d) PREFIX_MLS(PPC_INST_STFD, frs, a, r, d)
135
136/* Prefixed VSX Load/Store Instructions */
137#define PLXSD(vrt, a, r, d) PREFIX_8LS(0xa8000000, vrt, a, r, d)
138#define PLXSSP(vrt, a, r, d) PREFIX_8LS(0xac000000, vrt, a, r, d)
139#define PLXV0(s, a, r, d) PREFIX_8LS(0xc8000000, s, a, r, d)
140#define PLXV1(s, a, r, d) PREFIX_8LS(0xcc000000, s, a, r, d)
141#define PSTXSD(vrs, a, r, d) PREFIX_8LS(0xb8000000, vrs, a, r, d)
142#define PSTXSSP(vrs, a, r, d) PREFIX_8LS(0xbc000000, vrs, a, r, d)
143#define PSTXV0(s, a, r, d) PREFIX_8LS(0xd8000000, s, a, r, d)
144#define PSTXV1(s, a, r, d) PREFIX_8LS(0xdc000000, s, a, r, d)
145
146#endif /* _SELFTESTS_POWERPC_INSTRUCTIONS_H */