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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | /* |
| 3 | * Some useful macros for LoongArch assembler code |
| 4 | * |
| 5 | * Copyright (C) 2020-2022 Loongson Technology Corporation Limited |
| 6 | * |
| 7 | * Derived from MIPS: |
| 8 | * Copyright (C) 1995, 1996, 1997, 1999, 2001 by Ralf Baechle |
| 9 | * Copyright (C) 1999 by Silicon Graphics, Inc. |
| 10 | * Copyright (C) 2001 MIPS Technologies, Inc. |
| 11 | * Copyright (C) 2002 Maciej W. Rozycki |
| 12 | */ |
| 13 | #ifndef __ASM_ASM_H |
| 14 | #define __ASM_ASM_H |
| 15 | |
| 16 | /* LoongArch pref instruction. */ |
| 17 | #ifdef CONFIG_CPU_HAS_PREFETCH |
| 18 | |
| 19 | #define PREF(hint, addr, offs) \ |
| 20 | preld hint, addr, offs; \ |
| 21 | |
| 22 | #define PREFX(hint, addr, index) \ |
| 23 | preldx hint, addr, index; \ |
| 24 | |
| 25 | #else /* !CONFIG_CPU_HAS_PREFETCH */ |
| 26 | |
| 27 | #define PREF(hint, addr, offs) |
| 28 | #define PREFX(hint, addr, index) |
| 29 | |
| 30 | #endif /* !CONFIG_CPU_HAS_PREFETCH */ |
| 31 | |
| 32 | /* |
| 33 | * Stack alignment |
| 34 | */ |
| 35 | #define STACK_ALIGN ~(0xf) |
| 36 | |
| 37 | /* |
| 38 | * Macros to handle different pointer/register sizes for 32/64-bit code |
| 39 | */ |
| 40 | |
| 41 | /* |
| 42 | * Size of a register |
| 43 | */ |
| 44 | #ifndef __loongarch64 |
| 45 | #define SZREG 4 |
| 46 | #else |
| 47 | #define SZREG 8 |
| 48 | #endif |
| 49 | |
| 50 | /* |
| 51 | * Use the following macros in assemblercode to load/store registers, |
| 52 | * pointers etc. |
| 53 | */ |
| 54 | #if (SZREG == 4) |
| 55 | #define REG_L ld.w |
| 56 | #define REG_S st.w |
| 57 | #define REG_ADD add.w |
| 58 | #define REG_SUB sub.w |
| 59 | #else /* SZREG == 8 */ |
| 60 | #define REG_L ld.d |
| 61 | #define REG_S st.d |
| 62 | #define REG_ADD add.d |
| 63 | #define REG_SUB sub.d |
| 64 | #endif |
| 65 | |
| 66 | /* |
| 67 | * How to add/sub/load/store/shift C int variables. |
| 68 | */ |
| 69 | #if (__SIZEOF_INT__ == 4) |
| 70 | #define INT_ADD add.w |
| 71 | #define INT_ADDI addi.w |
| 72 | #define INT_SUB sub.w |
| 73 | #define INT_L ld.w |
| 74 | #define INT_S st.w |
| 75 | #define INT_SLLI slli.w |
| 76 | #define INT_SLLV sll.w |
| 77 | #define INT_SRLI srli.w |
| 78 | #define INT_SRLV srl.w |
| 79 | #define INT_SRAI srai.w |
| 80 | #define INT_SRAV sra.w |
| 81 | #endif |
| 82 | |
| 83 | #if (__SIZEOF_INT__ == 8) |
| 84 | #define INT_ADD add.d |
| 85 | #define INT_ADDI addi.d |
| 86 | #define INT_SUB sub.d |
| 87 | #define INT_L ld.d |
| 88 | #define INT_S st.d |
| 89 | #define INT_SLLI slli.d |
| 90 | #define INT_SLLV sll.d |
| 91 | #define INT_SRLI srli.d |
| 92 | #define INT_SRLV srl.d |
| 93 | #define INT_SRAI srai.d |
| 94 | #define INT_SRAV sra.d |
| 95 | #endif |
| 96 | |
| 97 | /* |
| 98 | * How to add/sub/load/store/shift C long variables. |
| 99 | */ |
| 100 | #if (__SIZEOF_LONG__ == 4) |
| 101 | #define LONG_ADD add.w |
| 102 | #define LONG_ADDI addi.w |
| 103 | #define LONG_ALSL alsl.w |
| 104 | #define LONG_BSTRINS bstrins.w |
| 105 | #define LONG_BSTRPICK bstrpick.w |
| 106 | #define LONG_SUB sub.w |
| 107 | #define LONG_L ld.w |
| 108 | #define LONG_LI li.w |
| 109 | #define LONG_LPTR ld.w |
| 110 | #define LONG_S st.w |
| 111 | #define LONG_SPTR st.w |
| 112 | #define LONG_SLLI slli.w |
| 113 | #define LONG_SLLV sll.w |
| 114 | #define LONG_SRLI srli.w |
| 115 | #define LONG_SRLV srl.w |
| 116 | #define LONG_SRAI srai.w |
| 117 | #define LONG_SRAV sra.w |
| 118 | #define LONG_ROTR rotr.w |
| 119 | #define LONG_ROTRI rotri.w |
| 120 | |
| 121 | #ifdef __ASSEMBLER__ |
| 122 | #define LONG .word |
| 123 | #endif |
| 124 | #define LONGSIZE 4 |
| 125 | #define LONGMASK 3 |
| 126 | #define LONGLOG 2 |
| 127 | #endif |
| 128 | |
| 129 | #if (__SIZEOF_LONG__ == 8) |
| 130 | #define LONG_ADD add.d |
| 131 | #define LONG_ADDI addi.d |
| 132 | #define LONG_ALSL alsl.d |
| 133 | #define LONG_BSTRINS bstrins.d |
| 134 | #define LONG_BSTRPICK bstrpick.d |
| 135 | #define LONG_SUB sub.d |
| 136 | #define LONG_L ld.d |
| 137 | #define LONG_LI li.d |
| 138 | #define LONG_LPTR ldptr.d |
| 139 | #define LONG_S st.d |
| 140 | #define LONG_SPTR stptr.d |
| 141 | #define LONG_SLLI slli.d |
| 142 | #define LONG_SLLV sll.d |
| 143 | #define LONG_SRLI srli.d |
| 144 | #define LONG_SRLV srl.d |
| 145 | #define LONG_SRAI srai.d |
| 146 | #define LONG_SRAV sra.d |
| 147 | #define LONG_ROTR rotr.d |
| 148 | #define LONG_ROTRI rotri.d |
| 149 | |
| 150 | #ifdef __ASSEMBLER__ |
| 151 | #define LONG .dword |
| 152 | #endif |
| 153 | #define LONGSIZE 8 |
| 154 | #define LONGMASK 7 |
| 155 | #define LONGLOG 3 |
| 156 | #endif |
| 157 | |
| 158 | /* |
| 159 | * How to add/sub/load/store/shift pointers. |
| 160 | */ |
| 161 | #if (__SIZEOF_POINTER__ == 4) |
| 162 | #define PTR_ADD add.w |
| 163 | #define PTR_ADDI addi.w |
| 164 | #define PTR_ALSL alsl.w |
| 165 | #define PTR_BSTRINS bstrins.w |
| 166 | #define PTR_BSTRPICK bstrpick.w |
| 167 | #define PTR_SUB sub.w |
| 168 | #define PTR_L ld.w |
| 169 | #define PTR_LI li.w |
| 170 | #define PTR_LPTR ld.w |
| 171 | #define PTR_S st.w |
| 172 | #define PTR_SPTR st.w |
| 173 | #define PTR_SLLI slli.w |
| 174 | #define PTR_SLLV sll.w |
| 175 | #define PTR_SRLI srli.w |
| 176 | #define PTR_SRLV srl.w |
| 177 | #define PTR_SRAI srai.w |
| 178 | #define PTR_SRAV sra.w |
| 179 | #define PTR_ROTR rotr.w |
| 180 | #define PTR_ROTRI rotri.w |
| 181 | |
| 182 | #define PTR_SCALESHIFT 2 |
| 183 | |
| 184 | #ifdef __ASSEMBLER__ |
| 185 | #define PTR .word |
| 186 | #endif |
| 187 | #define PTRSIZE 4 |
| 188 | #define PTRLOG 2 |
| 189 | #endif |
| 190 | |
| 191 | #if (__SIZEOF_POINTER__ == 8) |
| 192 | #define PTR_ADD add.d |
| 193 | #define PTR_ADDI addi.d |
| 194 | #define PTR_ALSL alsl.d |
| 195 | #define PTR_BSTRINS bstrins.d |
| 196 | #define PTR_BSTRPICK bstrpick.d |
| 197 | #define PTR_SUB sub.d |
| 198 | #define PTR_L ld.d |
| 199 | #define PTR_LI li.d |
| 200 | #define PTR_LPTR ldptr.d |
| 201 | #define PTR_S st.d |
| 202 | #define PTR_SPTR stptr.d |
| 203 | #define PTR_SLLI slli.d |
| 204 | #define PTR_SLLV sll.d |
| 205 | #define PTR_SRLI srli.d |
| 206 | #define PTR_SRLV srl.d |
| 207 | #define PTR_SRAI srai.d |
| 208 | #define PTR_SRAV sra.d |
| 209 | #define PTR_ROTR rotr.d |
| 210 | #define PTR_ROTRI rotri.d |
| 211 | |
| 212 | #define PTR_SCALESHIFT 3 |
| 213 | |
| 214 | #ifdef __ASSEMBLER__ |
| 215 | #define PTR .dword |
| 216 | #endif |
| 217 | #define PTRSIZE 8 |
| 218 | #define PTRLOG 3 |
| 219 | #endif |
| 220 | |
| 221 | /* Annotate a function as being unsuitable for kprobes. */ |
| 222 | #ifdef CONFIG_KPROBES |
| 223 | #ifdef CONFIG_32BIT |
| 224 | #define _ASM_NOKPROBE(name) \ |
| 225 | .pushsection "_kprobe_blacklist", "aw"; \ |
| 226 | .long name; \ |
| 227 | .popsection |
| 228 | #else |
| 229 | #define _ASM_NOKPROBE(name) \ |
| 230 | .pushsection "_kprobe_blacklist", "aw"; \ |
| 231 | .quad name; \ |
| 232 | .popsection |
| 233 | #endif |
| 234 | #else |
| 235 | #define _ASM_NOKPROBE(name) |
| 236 | #endif |
| 237 | |
| 238 | #endif /* __ASM_ASM_H */ |
| 239 |
Warning: This file is not a C or C++ file. It does not have highlighting.