instructions.h (4758B)
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 __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 */