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 14 static inline void copy(void *i) 15 { 16 asm volatile(str(COPY(0, %0, 0))";" 17 : 18 : "b" (i) 19 : "memory" 20 ); 21 } 22 23 static 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 38 static 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 51 static 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 __ASSEMBLY__ 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 */ 147