1 /* 2 * Copyright (C) 2013 Huawei Ltd. 3 * Author: Jiang Liu <liuj97@gmail.com> 4 * 5 * Copyright (C) 2014 Zi Shen Lim <zlim.lnx@gmail.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 #ifndef __ASM_INSN_H 20 #define __ASM_INSN_H 21 #include <linux/types.h> 22 23 /* A64 instructions are always 32 bits. */ 24 #define AARCH64_INSN_SIZE 4 25 26 #ifndef __ASSEMBLY__ 27 /* 28 * ARM Architecture Reference Manual for ARMv8 Profile-A, Issue A.a 29 * Section C3.1 "A64 instruction index by encoding": 30 * AArch64 main encoding table 31 * Bit position 32 * 28 27 26 25 Encoding Group 33 * 0 0 - - Unallocated 34 * 1 0 0 - Data processing, immediate 35 * 1 0 1 - Branch, exception generation and system instructions 36 * - 1 - 0 Loads and stores 37 * - 1 0 1 Data processing - register 38 * 0 1 1 1 Data processing - SIMD and floating point 39 * 1 1 1 1 Data processing - SIMD and floating point 40 * "-" means "don't care" 41 */ 42 enum aarch64_insn_encoding_class { 43 AARCH64_INSN_CLS_UNKNOWN, /* UNALLOCATED */ 44 AARCH64_INSN_CLS_DP_IMM, /* Data processing - immediate */ 45 AARCH64_INSN_CLS_DP_REG, /* Data processing - register */ 46 AARCH64_INSN_CLS_DP_FPSIMD, /* Data processing - SIMD and FP */ 47 AARCH64_INSN_CLS_LDST, /* Loads and stores */ 48 AARCH64_INSN_CLS_BR_SYS, /* Branch, exception generation and 49 * system instructions */ 50 }; 51 52 enum aarch64_insn_hint_op { 53 AARCH64_INSN_HINT_NOP = 0x0 << 5, 54 AARCH64_INSN_HINT_YIELD = 0x1 << 5, 55 AARCH64_INSN_HINT_WFE = 0x2 << 5, 56 AARCH64_INSN_HINT_WFI = 0x3 << 5, 57 AARCH64_INSN_HINT_SEV = 0x4 << 5, 58 AARCH64_INSN_HINT_SEVL = 0x5 << 5, 59 }; 60 61 enum aarch64_insn_imm_type { 62 AARCH64_INSN_IMM_ADR, 63 AARCH64_INSN_IMM_26, 64 AARCH64_INSN_IMM_19, 65 AARCH64_INSN_IMM_16, 66 AARCH64_INSN_IMM_14, 67 AARCH64_INSN_IMM_12, 68 AARCH64_INSN_IMM_9, 69 AARCH64_INSN_IMM_7, 70 AARCH64_INSN_IMM_6, 71 AARCH64_INSN_IMM_S, 72 AARCH64_INSN_IMM_R, 73 AARCH64_INSN_IMM_MAX 74 }; 75 76 enum aarch64_insn_register_type { 77 AARCH64_INSN_REGTYPE_RT, 78 AARCH64_INSN_REGTYPE_RN, 79 AARCH64_INSN_REGTYPE_RT2, 80 AARCH64_INSN_REGTYPE_RM, 81 AARCH64_INSN_REGTYPE_RD, 82 AARCH64_INSN_REGTYPE_RA, 83 }; 84 85 enum aarch64_insn_register { 86 AARCH64_INSN_REG_0 = 0, 87 AARCH64_INSN_REG_1 = 1, 88 AARCH64_INSN_REG_2 = 2, 89 AARCH64_INSN_REG_3 = 3, 90 AARCH64_INSN_REG_4 = 4, 91 AARCH64_INSN_REG_5 = 5, 92 AARCH64_INSN_REG_6 = 6, 93 AARCH64_INSN_REG_7 = 7, 94 AARCH64_INSN_REG_8 = 8, 95 AARCH64_INSN_REG_9 = 9, 96 AARCH64_INSN_REG_10 = 10, 97 AARCH64_INSN_REG_11 = 11, 98 AARCH64_INSN_REG_12 = 12, 99 AARCH64_INSN_REG_13 = 13, 100 AARCH64_INSN_REG_14 = 14, 101 AARCH64_INSN_REG_15 = 15, 102 AARCH64_INSN_REG_16 = 16, 103 AARCH64_INSN_REG_17 = 17, 104 AARCH64_INSN_REG_18 = 18, 105 AARCH64_INSN_REG_19 = 19, 106 AARCH64_INSN_REG_20 = 20, 107 AARCH64_INSN_REG_21 = 21, 108 AARCH64_INSN_REG_22 = 22, 109 AARCH64_INSN_REG_23 = 23, 110 AARCH64_INSN_REG_24 = 24, 111 AARCH64_INSN_REG_25 = 25, 112 AARCH64_INSN_REG_26 = 26, 113 AARCH64_INSN_REG_27 = 27, 114 AARCH64_INSN_REG_28 = 28, 115 AARCH64_INSN_REG_29 = 29, 116 AARCH64_INSN_REG_FP = 29, /* Frame pointer */ 117 AARCH64_INSN_REG_30 = 30, 118 AARCH64_INSN_REG_LR = 30, /* Link register */ 119 AARCH64_INSN_REG_ZR = 31, /* Zero: as source register */ 120 AARCH64_INSN_REG_SP = 31 /* Stack pointer: as load/store base reg */ 121 }; 122 123 enum aarch64_insn_variant { 124 AARCH64_INSN_VARIANT_32BIT, 125 AARCH64_INSN_VARIANT_64BIT 126 }; 127 128 enum aarch64_insn_condition { 129 AARCH64_INSN_COND_EQ = 0x0, /* == */ 130 AARCH64_INSN_COND_NE = 0x1, /* != */ 131 AARCH64_INSN_COND_CS = 0x2, /* unsigned >= */ 132 AARCH64_INSN_COND_CC = 0x3, /* unsigned < */ 133 AARCH64_INSN_COND_MI = 0x4, /* < 0 */ 134 AARCH64_INSN_COND_PL = 0x5, /* >= 0 */ 135 AARCH64_INSN_COND_VS = 0x6, /* overflow */ 136 AARCH64_INSN_COND_VC = 0x7, /* no overflow */ 137 AARCH64_INSN_COND_HI = 0x8, /* unsigned > */ 138 AARCH64_INSN_COND_LS = 0x9, /* unsigned <= */ 139 AARCH64_INSN_COND_GE = 0xa, /* signed >= */ 140 AARCH64_INSN_COND_LT = 0xb, /* signed < */ 141 AARCH64_INSN_COND_GT = 0xc, /* signed > */ 142 AARCH64_INSN_COND_LE = 0xd, /* signed <= */ 143 AARCH64_INSN_COND_AL = 0xe, /* always */ 144 }; 145 146 enum aarch64_insn_branch_type { 147 AARCH64_INSN_BRANCH_NOLINK, 148 AARCH64_INSN_BRANCH_LINK, 149 AARCH64_INSN_BRANCH_RETURN, 150 AARCH64_INSN_BRANCH_COMP_ZERO, 151 AARCH64_INSN_BRANCH_COMP_NONZERO, 152 }; 153 154 enum aarch64_insn_size_type { 155 AARCH64_INSN_SIZE_8, 156 AARCH64_INSN_SIZE_16, 157 AARCH64_INSN_SIZE_32, 158 AARCH64_INSN_SIZE_64, 159 }; 160 161 enum aarch64_insn_ldst_type { 162 AARCH64_INSN_LDST_LOAD_REG_OFFSET, 163 AARCH64_INSN_LDST_STORE_REG_OFFSET, 164 AARCH64_INSN_LDST_LOAD_PAIR_PRE_INDEX, 165 AARCH64_INSN_LDST_STORE_PAIR_PRE_INDEX, 166 AARCH64_INSN_LDST_LOAD_PAIR_POST_INDEX, 167 AARCH64_INSN_LDST_STORE_PAIR_POST_INDEX, 168 }; 169 170 enum aarch64_insn_adsb_type { 171 AARCH64_INSN_ADSB_ADD, 172 AARCH64_INSN_ADSB_SUB, 173 AARCH64_INSN_ADSB_ADD_SETFLAGS, 174 AARCH64_INSN_ADSB_SUB_SETFLAGS 175 }; 176 177 enum aarch64_insn_movewide_type { 178 AARCH64_INSN_MOVEWIDE_ZERO, 179 AARCH64_INSN_MOVEWIDE_KEEP, 180 AARCH64_INSN_MOVEWIDE_INVERSE 181 }; 182 183 enum aarch64_insn_bitfield_type { 184 AARCH64_INSN_BITFIELD_MOVE, 185 AARCH64_INSN_BITFIELD_MOVE_UNSIGNED, 186 AARCH64_INSN_BITFIELD_MOVE_SIGNED 187 }; 188 189 enum aarch64_insn_data1_type { 190 AARCH64_INSN_DATA1_REVERSE_16, 191 AARCH64_INSN_DATA1_REVERSE_32, 192 AARCH64_INSN_DATA1_REVERSE_64, 193 }; 194 195 enum aarch64_insn_data2_type { 196 AARCH64_INSN_DATA2_UDIV, 197 AARCH64_INSN_DATA2_SDIV, 198 AARCH64_INSN_DATA2_LSLV, 199 AARCH64_INSN_DATA2_LSRV, 200 AARCH64_INSN_DATA2_ASRV, 201 AARCH64_INSN_DATA2_RORV, 202 }; 203 204 enum aarch64_insn_data3_type { 205 AARCH64_INSN_DATA3_MADD, 206 AARCH64_INSN_DATA3_MSUB, 207 }; 208 209 enum aarch64_insn_logic_type { 210 AARCH64_INSN_LOGIC_AND, 211 AARCH64_INSN_LOGIC_BIC, 212 AARCH64_INSN_LOGIC_ORR, 213 AARCH64_INSN_LOGIC_ORN, 214 AARCH64_INSN_LOGIC_EOR, 215 AARCH64_INSN_LOGIC_EON, 216 AARCH64_INSN_LOGIC_AND_SETFLAGS, 217 AARCH64_INSN_LOGIC_BIC_SETFLAGS 218 }; 219 220 #define __AARCH64_INSN_FUNCS(abbr, mask, val) \ 221 static __always_inline bool aarch64_insn_is_##abbr(u32 code) \ 222 { return (code & (mask)) == (val); } \ 223 static __always_inline u32 aarch64_insn_get_##abbr##_value(void) \ 224 { return (val); } 225 226 __AARCH64_INSN_FUNCS(str_reg, 0x3FE0EC00, 0x38206800) 227 __AARCH64_INSN_FUNCS(ldr_reg, 0x3FE0EC00, 0x38606800) 228 __AARCH64_INSN_FUNCS(stp_post, 0x7FC00000, 0x28800000) 229 __AARCH64_INSN_FUNCS(ldp_post, 0x7FC00000, 0x28C00000) 230 __AARCH64_INSN_FUNCS(stp_pre, 0x7FC00000, 0x29800000) 231 __AARCH64_INSN_FUNCS(ldp_pre, 0x7FC00000, 0x29C00000) 232 __AARCH64_INSN_FUNCS(add_imm, 0x7F000000, 0x11000000) 233 __AARCH64_INSN_FUNCS(adds_imm, 0x7F000000, 0x31000000) 234 __AARCH64_INSN_FUNCS(sub_imm, 0x7F000000, 0x51000000) 235 __AARCH64_INSN_FUNCS(subs_imm, 0x7F000000, 0x71000000) 236 __AARCH64_INSN_FUNCS(movn, 0x7F800000, 0x12800000) 237 __AARCH64_INSN_FUNCS(sbfm, 0x7F800000, 0x13000000) 238 __AARCH64_INSN_FUNCS(bfm, 0x7F800000, 0x33000000) 239 __AARCH64_INSN_FUNCS(movz, 0x7F800000, 0x52800000) 240 __AARCH64_INSN_FUNCS(ubfm, 0x7F800000, 0x53000000) 241 __AARCH64_INSN_FUNCS(movk, 0x7F800000, 0x72800000) 242 __AARCH64_INSN_FUNCS(add, 0x7F200000, 0x0B000000) 243 __AARCH64_INSN_FUNCS(adds, 0x7F200000, 0x2B000000) 244 __AARCH64_INSN_FUNCS(sub, 0x7F200000, 0x4B000000) 245 __AARCH64_INSN_FUNCS(subs, 0x7F200000, 0x6B000000) 246 __AARCH64_INSN_FUNCS(madd, 0x7FE08000, 0x1B000000) 247 __AARCH64_INSN_FUNCS(msub, 0x7FE08000, 0x1B008000) 248 __AARCH64_INSN_FUNCS(udiv, 0x7FE0FC00, 0x1AC00800) 249 __AARCH64_INSN_FUNCS(sdiv, 0x7FE0FC00, 0x1AC00C00) 250 __AARCH64_INSN_FUNCS(lslv, 0x7FE0FC00, 0x1AC02000) 251 __AARCH64_INSN_FUNCS(lsrv, 0x7FE0FC00, 0x1AC02400) 252 __AARCH64_INSN_FUNCS(asrv, 0x7FE0FC00, 0x1AC02800) 253 __AARCH64_INSN_FUNCS(rorv, 0x7FE0FC00, 0x1AC02C00) 254 __AARCH64_INSN_FUNCS(rev16, 0x7FFFFC00, 0x5AC00400) 255 __AARCH64_INSN_FUNCS(rev32, 0x7FFFFC00, 0x5AC00800) 256 __AARCH64_INSN_FUNCS(rev64, 0x7FFFFC00, 0x5AC00C00) 257 __AARCH64_INSN_FUNCS(and, 0x7F200000, 0x0A000000) 258 __AARCH64_INSN_FUNCS(bic, 0x7F200000, 0x0A200000) 259 __AARCH64_INSN_FUNCS(orr, 0x7F200000, 0x2A000000) 260 __AARCH64_INSN_FUNCS(orn, 0x7F200000, 0x2A200000) 261 __AARCH64_INSN_FUNCS(eor, 0x7F200000, 0x4A000000) 262 __AARCH64_INSN_FUNCS(eon, 0x7F200000, 0x4A200000) 263 __AARCH64_INSN_FUNCS(ands, 0x7F200000, 0x6A000000) 264 __AARCH64_INSN_FUNCS(bics, 0x7F200000, 0x6A200000) 265 __AARCH64_INSN_FUNCS(b, 0xFC000000, 0x14000000) 266 __AARCH64_INSN_FUNCS(bl, 0xFC000000, 0x94000000) 267 __AARCH64_INSN_FUNCS(cbz, 0x7F000000, 0x34000000) 268 __AARCH64_INSN_FUNCS(cbnz, 0x7F000000, 0x35000000) 269 __AARCH64_INSN_FUNCS(tbz, 0x7F000000, 0x36000000) 270 __AARCH64_INSN_FUNCS(tbnz, 0x7F000000, 0x37000000) 271 __AARCH64_INSN_FUNCS(bcond, 0xFF000010, 0x54000000) 272 __AARCH64_INSN_FUNCS(svc, 0xFFE0001F, 0xD4000001) 273 __AARCH64_INSN_FUNCS(hvc, 0xFFE0001F, 0xD4000002) 274 __AARCH64_INSN_FUNCS(smc, 0xFFE0001F, 0xD4000003) 275 __AARCH64_INSN_FUNCS(brk, 0xFFE0001F, 0xD4200000) 276 __AARCH64_INSN_FUNCS(hint, 0xFFFFF01F, 0xD503201F) 277 __AARCH64_INSN_FUNCS(br, 0xFFFFFC1F, 0xD61F0000) 278 __AARCH64_INSN_FUNCS(blr, 0xFFFFFC1F, 0xD63F0000) 279 __AARCH64_INSN_FUNCS(ret, 0xFFFFFC1F, 0xD65F0000) 280 281 #undef __AARCH64_INSN_FUNCS 282 283 bool aarch64_insn_is_nop(u32 insn); 284 bool aarch64_insn_is_branch_imm(u32 insn); 285 286 int aarch64_insn_read(void *addr, u32 *insnp); 287 int aarch64_insn_write(void *addr, u32 insn); 288 enum aarch64_insn_encoding_class aarch64_get_insn_class(u32 insn); 289 u64 aarch64_insn_decode_immediate(enum aarch64_insn_imm_type type, u32 insn); 290 u32 aarch64_insn_encode_immediate(enum aarch64_insn_imm_type type, 291 u32 insn, u64 imm); 292 u32 aarch64_insn_gen_branch_imm(unsigned long pc, unsigned long addr, 293 enum aarch64_insn_branch_type type); 294 u32 aarch64_insn_gen_comp_branch_imm(unsigned long pc, unsigned long addr, 295 enum aarch64_insn_register reg, 296 enum aarch64_insn_variant variant, 297 enum aarch64_insn_branch_type type); 298 u32 aarch64_insn_gen_cond_branch_imm(unsigned long pc, unsigned long addr, 299 enum aarch64_insn_condition cond); 300 u32 aarch64_insn_gen_hint(enum aarch64_insn_hint_op op); 301 u32 aarch64_insn_gen_nop(void); 302 u32 aarch64_insn_gen_branch_reg(enum aarch64_insn_register reg, 303 enum aarch64_insn_branch_type type); 304 u32 aarch64_insn_gen_load_store_reg(enum aarch64_insn_register reg, 305 enum aarch64_insn_register base, 306 enum aarch64_insn_register offset, 307 enum aarch64_insn_size_type size, 308 enum aarch64_insn_ldst_type type); 309 u32 aarch64_insn_gen_load_store_pair(enum aarch64_insn_register reg1, 310 enum aarch64_insn_register reg2, 311 enum aarch64_insn_register base, 312 int offset, 313 enum aarch64_insn_variant variant, 314 enum aarch64_insn_ldst_type type); 315 u32 aarch64_insn_gen_add_sub_imm(enum aarch64_insn_register dst, 316 enum aarch64_insn_register src, 317 int imm, enum aarch64_insn_variant variant, 318 enum aarch64_insn_adsb_type type); 319 u32 aarch64_insn_gen_bitfield(enum aarch64_insn_register dst, 320 enum aarch64_insn_register src, 321 int immr, int imms, 322 enum aarch64_insn_variant variant, 323 enum aarch64_insn_bitfield_type type); 324 u32 aarch64_insn_gen_movewide(enum aarch64_insn_register dst, 325 int imm, int shift, 326 enum aarch64_insn_variant variant, 327 enum aarch64_insn_movewide_type type); 328 u32 aarch64_insn_gen_add_sub_shifted_reg(enum aarch64_insn_register dst, 329 enum aarch64_insn_register src, 330 enum aarch64_insn_register reg, 331 int shift, 332 enum aarch64_insn_variant variant, 333 enum aarch64_insn_adsb_type type); 334 u32 aarch64_insn_gen_data1(enum aarch64_insn_register dst, 335 enum aarch64_insn_register src, 336 enum aarch64_insn_variant variant, 337 enum aarch64_insn_data1_type type); 338 u32 aarch64_insn_gen_data2(enum aarch64_insn_register dst, 339 enum aarch64_insn_register src, 340 enum aarch64_insn_register reg, 341 enum aarch64_insn_variant variant, 342 enum aarch64_insn_data2_type type); 343 u32 aarch64_insn_gen_data3(enum aarch64_insn_register dst, 344 enum aarch64_insn_register src, 345 enum aarch64_insn_register reg1, 346 enum aarch64_insn_register reg2, 347 enum aarch64_insn_variant variant, 348 enum aarch64_insn_data3_type type); 349 u32 aarch64_insn_gen_logical_shifted_reg(enum aarch64_insn_register dst, 350 enum aarch64_insn_register src, 351 enum aarch64_insn_register reg, 352 int shift, 353 enum aarch64_insn_variant variant, 354 enum aarch64_insn_logic_type type); 355 s32 aarch64_get_branch_offset(u32 insn); 356 u32 aarch64_set_branch_offset(u32 insn, s32 offset); 357 358 bool aarch64_insn_hotpatch_safe(u32 old_insn, u32 new_insn); 359 360 int aarch64_insn_patch_text_nosync(void *addr, u32 insn); 361 int aarch64_insn_patch_text_sync(void *addrs[], u32 insns[], int cnt); 362 int aarch64_insn_patch_text(void *addrs[], u32 insns[], int cnt); 363 364 bool aarch32_insn_is_wide(u32 insn); 365 366 #define A32_RN_OFFSET 16 367 #define A32_RT_OFFSET 12 368 #define A32_RT2_OFFSET 0 369 370 u32 aarch32_insn_extract_reg_num(u32 insn, int offset); 371 u32 aarch32_insn_mcr_extract_opc2(u32 insn); 372 u32 aarch32_insn_mcr_extract_crm(u32 insn); 373 #endif /* __ASSEMBLY__ */ 374 375 #endif /* __ASM_INSN_H */ 376