1 /* 2 * Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2014, 2020, Red Hat Inc. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_AARCH64_REGISTER_AARCH64_HPP 27 #define CPU_AARCH64_REGISTER_AARCH64_HPP 28 29 #include "asm/register.hpp" 30 31 class VMRegImpl; 32 typedef VMRegImpl* VMReg; 33 34 // Use Register as shortcut 35 class RegisterImpl; 36 typedef RegisterImpl* Register; 37 38 inline Register as_Register(int encoding) { 39 return (Register)(intptr_t) encoding; 40 } 41 42 class RegisterImpl: public AbstractRegisterImpl { 43 public: 44 enum { 45 number_of_registers = 32, 46 number_of_byte_registers = 32, 47 number_of_registers_for_jvmci = 34, // Including SP and ZR. 48 max_slots_per_register = 2 49 }; 50 51 // derived registers, offsets, and addresses 52 Register successor() const { return as_Register(encoding() + 1); } 53 54 // construction 55 inline friend Register as_Register(int encoding); 56 57 VMReg as_VMReg(); 58 59 // accessors 60 int encoding() const { assert(is_valid(), "invalid register"); return (intptr_t)this; } 61 bool is_valid() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_registers; } 62 bool has_byte_register() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_byte_registers; } 63 const char* name() const; 64 int encoding_nocheck() const { return (intptr_t)this; } 65 66 // Return the bit which represents this register. This is intended 67 // to be ORed into a bitmask: for usage see class RegSet below. 68 uint64_t bit(bool should_set = true) const { return should_set ? 1 << encoding() : 0; } 69 }; 70 71 // The integer registers of the aarch64 architecture 72 73 CONSTANT_REGISTER_DECLARATION(Register, noreg, (-1)); 74 75 76 CONSTANT_REGISTER_DECLARATION(Register, r0, (0)); 77 CONSTANT_REGISTER_DECLARATION(Register, r1, (1)); 78 CONSTANT_REGISTER_DECLARATION(Register, r2, (2)); 79 CONSTANT_REGISTER_DECLARATION(Register, r3, (3)); 80 CONSTANT_REGISTER_DECLARATION(Register, r4, (4)); 81 CONSTANT_REGISTER_DECLARATION(Register, r5, (5)); 82 CONSTANT_REGISTER_DECLARATION(Register, r6, (6)); 83 CONSTANT_REGISTER_DECLARATION(Register, r7, (7)); 84 CONSTANT_REGISTER_DECLARATION(Register, r8, (8)); 85 CONSTANT_REGISTER_DECLARATION(Register, r9, (9)); 86 CONSTANT_REGISTER_DECLARATION(Register, r10, (10)); 87 CONSTANT_REGISTER_DECLARATION(Register, r11, (11)); 88 CONSTANT_REGISTER_DECLARATION(Register, r12, (12)); 89 CONSTANT_REGISTER_DECLARATION(Register, r13, (13)); 90 CONSTANT_REGISTER_DECLARATION(Register, r14, (14)); 91 CONSTANT_REGISTER_DECLARATION(Register, r15, (15)); 92 CONSTANT_REGISTER_DECLARATION(Register, r16, (16)); 93 CONSTANT_REGISTER_DECLARATION(Register, r17, (17)); 94 CONSTANT_REGISTER_DECLARATION(Register, r18, (18)); 95 CONSTANT_REGISTER_DECLARATION(Register, r19, (19)); 96 CONSTANT_REGISTER_DECLARATION(Register, r20, (20)); 97 CONSTANT_REGISTER_DECLARATION(Register, r21, (21)); 98 CONSTANT_REGISTER_DECLARATION(Register, r22, (22)); 99 CONSTANT_REGISTER_DECLARATION(Register, r23, (23)); 100 CONSTANT_REGISTER_DECLARATION(Register, r24, (24)); 101 CONSTANT_REGISTER_DECLARATION(Register, r25, (25)); 102 CONSTANT_REGISTER_DECLARATION(Register, r26, (26)); 103 CONSTANT_REGISTER_DECLARATION(Register, r27, (27)); 104 CONSTANT_REGISTER_DECLARATION(Register, r28, (28)); 105 CONSTANT_REGISTER_DECLARATION(Register, r29, (29)); 106 CONSTANT_REGISTER_DECLARATION(Register, r30, (30)); 107 108 109 // r31 is not a general purpose register, but represents either the 110 // stack pointer or the zero/discard register depending on the 111 // instruction. 112 CONSTANT_REGISTER_DECLARATION(Register, r31_sp, (31)); 113 CONSTANT_REGISTER_DECLARATION(Register, zr, (32)); 114 CONSTANT_REGISTER_DECLARATION(Register, sp, (33)); 115 116 // Used as a filler in instructions where a register field is unused. 117 const Register dummy_reg = r31_sp; 118 119 // Use FloatRegister as shortcut 120 class FloatRegisterImpl; 121 typedef FloatRegisterImpl* FloatRegister; 122 123 inline FloatRegister as_FloatRegister(int encoding) { 124 return (FloatRegister)(intptr_t) encoding; 125 } 126 127 // The implementation of floating point registers for the architecture 128 class FloatRegisterImpl: public AbstractRegisterImpl { 129 public: 130 enum { 131 number_of_registers = 32, 132 max_slots_per_register = 8, 133 save_slots_per_register = 2, 134 slots_per_neon_register = 4, 135 extra_save_slots_per_neon_register = slots_per_neon_register - save_slots_per_register 136 }; 137 138 // construction 139 inline friend FloatRegister as_FloatRegister(int encoding); 140 141 VMReg as_VMReg(); 142 143 // derived registers, offsets, and addresses 144 FloatRegister successor() const { return as_FloatRegister((encoding() + 1) % 32); } 145 146 // accessors 147 int encoding() const { assert(is_valid(), "invalid register"); return (intptr_t)this; } 148 int encoding_nocheck() const { return (intptr_t)this; } 149 bool is_valid() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_registers; } 150 const char* name() const; 151 152 }; 153 154 // The float registers of the AARCH64 architecture 155 156 CONSTANT_REGISTER_DECLARATION(FloatRegister, fnoreg , (-1)); 157 158 CONSTANT_REGISTER_DECLARATION(FloatRegister, v0 , ( 0)); 159 CONSTANT_REGISTER_DECLARATION(FloatRegister, v1 , ( 1)); 160 CONSTANT_REGISTER_DECLARATION(FloatRegister, v2 , ( 2)); 161 CONSTANT_REGISTER_DECLARATION(FloatRegister, v3 , ( 3)); 162 CONSTANT_REGISTER_DECLARATION(FloatRegister, v4 , ( 4)); 163 CONSTANT_REGISTER_DECLARATION(FloatRegister, v5 , ( 5)); 164 CONSTANT_REGISTER_DECLARATION(FloatRegister, v6 , ( 6)); 165 CONSTANT_REGISTER_DECLARATION(FloatRegister, v7 , ( 7)); 166 CONSTANT_REGISTER_DECLARATION(FloatRegister, v8 , ( 8)); 167 CONSTANT_REGISTER_DECLARATION(FloatRegister, v9 , ( 9)); 168 CONSTANT_REGISTER_DECLARATION(FloatRegister, v10 , (10)); 169 CONSTANT_REGISTER_DECLARATION(FloatRegister, v11 , (11)); 170 CONSTANT_REGISTER_DECLARATION(FloatRegister, v12 , (12)); 171 CONSTANT_REGISTER_DECLARATION(FloatRegister, v13 , (13)); 172 CONSTANT_REGISTER_DECLARATION(FloatRegister, v14 , (14)); 173 CONSTANT_REGISTER_DECLARATION(FloatRegister, v15 , (15)); 174 CONSTANT_REGISTER_DECLARATION(FloatRegister, v16 , (16)); 175 CONSTANT_REGISTER_DECLARATION(FloatRegister, v17 , (17)); 176 CONSTANT_REGISTER_DECLARATION(FloatRegister, v18 , (18)); 177 CONSTANT_REGISTER_DECLARATION(FloatRegister, v19 , (19)); 178 CONSTANT_REGISTER_DECLARATION(FloatRegister, v20 , (20)); 179 CONSTANT_REGISTER_DECLARATION(FloatRegister, v21 , (21)); 180 CONSTANT_REGISTER_DECLARATION(FloatRegister, v22 , (22)); 181 CONSTANT_REGISTER_DECLARATION(FloatRegister, v23 , (23)); 182 CONSTANT_REGISTER_DECLARATION(FloatRegister, v24 , (24)); 183 CONSTANT_REGISTER_DECLARATION(FloatRegister, v25 , (25)); 184 CONSTANT_REGISTER_DECLARATION(FloatRegister, v26 , (26)); 185 CONSTANT_REGISTER_DECLARATION(FloatRegister, v27 , (27)); 186 CONSTANT_REGISTER_DECLARATION(FloatRegister, v28 , (28)); 187 CONSTANT_REGISTER_DECLARATION(FloatRegister, v29 , (29)); 188 CONSTANT_REGISTER_DECLARATION(FloatRegister, v30 , (30)); 189 CONSTANT_REGISTER_DECLARATION(FloatRegister, v31 , (31)); 190 191 // SVE vector registers, shared with the SIMD&FP v0-v31. Vn maps to Zn[127:0]. 192 CONSTANT_REGISTER_DECLARATION(FloatRegister, z0 , ( 0)); 193 CONSTANT_REGISTER_DECLARATION(FloatRegister, z1 , ( 1)); 194 CONSTANT_REGISTER_DECLARATION(FloatRegister, z2 , ( 2)); 195 CONSTANT_REGISTER_DECLARATION(FloatRegister, z3 , ( 3)); 196 CONSTANT_REGISTER_DECLARATION(FloatRegister, z4 , ( 4)); 197 CONSTANT_REGISTER_DECLARATION(FloatRegister, z5 , ( 5)); 198 CONSTANT_REGISTER_DECLARATION(FloatRegister, z6 , ( 6)); 199 CONSTANT_REGISTER_DECLARATION(FloatRegister, z7 , ( 7)); 200 CONSTANT_REGISTER_DECLARATION(FloatRegister, z8 , ( 8)); 201 CONSTANT_REGISTER_DECLARATION(FloatRegister, z9 , ( 9)); 202 CONSTANT_REGISTER_DECLARATION(FloatRegister, z10 , (10)); 203 CONSTANT_REGISTER_DECLARATION(FloatRegister, z11 , (11)); 204 CONSTANT_REGISTER_DECLARATION(FloatRegister, z12 , (12)); 205 CONSTANT_REGISTER_DECLARATION(FloatRegister, z13 , (13)); 206 CONSTANT_REGISTER_DECLARATION(FloatRegister, z14 , (14)); 207 CONSTANT_REGISTER_DECLARATION(FloatRegister, z15 , (15)); 208 CONSTANT_REGISTER_DECLARATION(FloatRegister, z16 , (16)); 209 CONSTANT_REGISTER_DECLARATION(FloatRegister, z17 , (17)); 210 CONSTANT_REGISTER_DECLARATION(FloatRegister, z18 , (18)); 211 CONSTANT_REGISTER_DECLARATION(FloatRegister, z19 , (19)); 212 CONSTANT_REGISTER_DECLARATION(FloatRegister, z20 , (20)); 213 CONSTANT_REGISTER_DECLARATION(FloatRegister, z21 , (21)); 214 CONSTANT_REGISTER_DECLARATION(FloatRegister, z22 , (22)); 215 CONSTANT_REGISTER_DECLARATION(FloatRegister, z23 , (23)); 216 CONSTANT_REGISTER_DECLARATION(FloatRegister, z24 , (24)); 217 CONSTANT_REGISTER_DECLARATION(FloatRegister, z25 , (25)); 218 CONSTANT_REGISTER_DECLARATION(FloatRegister, z26 , (26)); 219 CONSTANT_REGISTER_DECLARATION(FloatRegister, z27 , (27)); 220 CONSTANT_REGISTER_DECLARATION(FloatRegister, z28 , (28)); 221 CONSTANT_REGISTER_DECLARATION(FloatRegister, z29 , (29)); 222 CONSTANT_REGISTER_DECLARATION(FloatRegister, z30 , (30)); 223 CONSTANT_REGISTER_DECLARATION(FloatRegister, z31 , (31)); 224 225 226 class PRegisterImpl; 227 typedef PRegisterImpl* PRegister; 228 inline PRegister as_PRegister(int encoding) { 229 return (PRegister)(intptr_t)encoding; 230 } 231 232 // The implementation of predicate registers for the architecture 233 class PRegisterImpl: public AbstractRegisterImpl { 234 public: 235 enum { 236 number_of_registers = 16, 237 max_slots_per_register = 1 238 }; 239 240 // construction 241 inline friend PRegister as_PRegister(int encoding); 242 243 VMReg as_VMReg(); 244 245 // derived registers, offsets, and addresses 246 PRegister successor() const { return as_PRegister(encoding() + 1); } 247 248 // accessors 249 int encoding() const { assert(is_valid(), "invalid register"); return (intptr_t)this; } 250 int encoding_nocheck() const { return (intptr_t)this; } 251 bool is_valid() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_registers; } 252 const char* name() const; 253 }; 254 255 // The predicate registers of SVE. 256 CONSTANT_REGISTER_DECLARATION(PRegister, p0, ( 0)); 257 CONSTANT_REGISTER_DECLARATION(PRegister, p1, ( 1)); 258 CONSTANT_REGISTER_DECLARATION(PRegister, p2, ( 2)); 259 CONSTANT_REGISTER_DECLARATION(PRegister, p3, ( 3)); 260 CONSTANT_REGISTER_DECLARATION(PRegister, p4, ( 4)); 261 CONSTANT_REGISTER_DECLARATION(PRegister, p5, ( 5)); 262 CONSTANT_REGISTER_DECLARATION(PRegister, p6, ( 6)); 263 CONSTANT_REGISTER_DECLARATION(PRegister, p7, ( 7)); 264 CONSTANT_REGISTER_DECLARATION(PRegister, p8, ( 8)); 265 CONSTANT_REGISTER_DECLARATION(PRegister, p9, ( 9)); 266 CONSTANT_REGISTER_DECLARATION(PRegister, p10, (10)); 267 CONSTANT_REGISTER_DECLARATION(PRegister, p11, (11)); 268 CONSTANT_REGISTER_DECLARATION(PRegister, p12, (12)); 269 CONSTANT_REGISTER_DECLARATION(PRegister, p13, (13)); 270 CONSTANT_REGISTER_DECLARATION(PRegister, p14, (14)); 271 CONSTANT_REGISTER_DECLARATION(PRegister, p15, (15)); 272 273 // Need to know the total number of registers of all sorts for SharedInfo. 274 // Define a class that exports it. 275 class ConcreteRegisterImpl : public AbstractRegisterImpl { 276 public: 277 enum { 278 // A big enough number for C2: all the registers plus flags 279 // This number must be large enough to cover REG_COUNT (defined by c2) registers. 280 // There is no requirement that any ordering here matches any ordering c2 gives 281 // it's optoregs. 282 283 number_of_registers = (RegisterImpl::max_slots_per_register * RegisterImpl::number_of_registers + 284 FloatRegisterImpl::max_slots_per_register * FloatRegisterImpl::number_of_registers + 285 PRegisterImpl::max_slots_per_register * PRegisterImpl::number_of_registers + 286 1) // flags 287 }; 288 289 // added to make it compile 290 static const int max_gpr; 291 static const int max_fpr; 292 static const int max_pr; 293 }; 294 295 // A set of registers 296 class RegSet { 297 uint32_t _bitset; 298 299 RegSet(uint32_t bitset) : _bitset(bitset) { } 300 301 public: 302 303 RegSet() : _bitset(0) { } 304 305 RegSet(Register r1) : _bitset(r1->bit()) { } 306 307 RegSet operator+(const RegSet aSet) const { 308 RegSet result(_bitset | aSet._bitset); 309 return result; 310 } 311 312 RegSet operator-(const RegSet aSet) const { 313 RegSet result(_bitset & ~aSet._bitset); 314 return result; 315 } 316 317 RegSet &operator+=(const RegSet aSet) { 318 *this = *this + aSet; 319 return *this; 320 } 321 322 RegSet &operator-=(const RegSet aSet) { 323 *this = *this - aSet; 324 return *this; 325 } 326 327 static RegSet of(Register r1) { 328 return RegSet(r1); 329 } 330 331 static RegSet of(Register r1, Register r2) { 332 return of(r1) + r2; 333 } 334 335 static RegSet of(Register r1, Register r2, Register r3) { 336 return of(r1, r2) + r3; 337 } 338 339 static RegSet of(Register r1, Register r2, Register r3, Register r4) { 340 return of(r1, r2, r3) + r4; 341 } 342 343 static RegSet range(Register start, Register end) { 344 uint32_t bits = ~0; 345 bits <<= start->encoding(); 346 bits <<= 31 - end->encoding(); 347 bits >>= 31 - end->encoding(); 348 349 return RegSet(bits); 350 } 351 352 uint32_t bits() const { return _bitset; } 353 }; 354 355 #endif // CPU_AARCH64_REGISTER_AARCH64_HPP