Mercurial > hg > truffle
annotate src/cpu/x86/vm/macroAssembler_x86.hpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 52b4284cb496 166d744df0de |
| children |
| rev | line source |
|---|---|
| 7199 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 7199 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef CPU_X86_VM_MACROASSEMBLER_X86_HPP | |
| 26 #define CPU_X86_VM_MACROASSEMBLER_X86_HPP | |
| 27 | |
| 28 #include "asm/assembler.hpp" | |
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29 #include "utilities/macros.hpp" |
| 17780 | 30 #include "runtime/rtmLocking.hpp" |
| 7199 | 31 |
| 32 | |
| 33 // MacroAssembler extends Assembler by frequently used macros. | |
| 34 // | |
| 35 // Instructions for which a 'better' code sequence exists depending | |
| 36 // on arguments should also go in here. | |
| 37 | |
| 38 class MacroAssembler: public Assembler { | |
| 39 friend class LIR_Assembler; | |
| 40 friend class Runtime1; // as_Address() | |
| 41 | |
| 42 protected: | |
| 43 | |
| 44 Address as_Address(AddressLiteral adr); | |
| 45 Address as_Address(ArrayAddress adr); | |
| 46 | |
| 47 // Support for VM calls | |
| 48 // | |
| 49 // This is the base routine called by the different versions of call_VM_leaf. The interpreter | |
| 50 // may customize this version by overriding it for its purposes (e.g., to save/restore | |
| 51 // additional registers when doing a VM call). | |
| 52 #ifdef CC_INTERP | |
| 53 // c++ interpreter never wants to use interp_masm version of call_VM | |
| 54 #define VIRTUAL | |
| 55 #else | |
| 56 #define VIRTUAL virtual | |
| 57 #endif | |
| 58 | |
| 59 VIRTUAL void call_VM_leaf_base( | |
| 60 address entry_point, // the entry point | |
| 61 int number_of_arguments // the number of arguments to pop after the call | |
| 62 ); | |
| 63 | |
| 64 // This is the base routine called by the different versions of call_VM. The interpreter | |
| 65 // may customize this version by overriding it for its purposes (e.g., to save/restore | |
| 66 // additional registers when doing a VM call). | |
| 67 // | |
| 68 // If no java_thread register is specified (noreg) than rdi will be used instead. call_VM_base | |
| 69 // returns the register which contains the thread upon return. If a thread register has been | |
| 70 // specified, the return value will correspond to that register. If no last_java_sp is specified | |
| 71 // (noreg) than rsp will be used instead. | |
| 72 VIRTUAL void call_VM_base( // returns the register containing the thread upon return | |
| 73 Register oop_result, // where an oop-result ends up if any; use noreg otherwise | |
| 74 Register java_thread, // the thread if computed before ; use noreg otherwise | |
| 75 Register last_java_sp, // to set up last_Java_frame in stubs; use noreg otherwise | |
| 76 address entry_point, // the entry point | |
| 77 int number_of_arguments, // the number of arguments (w/o thread) to pop after the call | |
| 78 bool check_exceptions // whether to check for pending exceptions after return | |
| 79 ); | |
| 80 | |
| 81 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code. | |
| 82 // The implementation is only non-empty for the InterpreterMacroAssembler, | |
| 83 // as only the interpreter handles PopFrame and ForceEarlyReturn requests. | |
| 84 virtual void check_and_handle_popframe(Register java_thread); | |
| 85 virtual void check_and_handle_earlyret(Register java_thread); | |
| 86 | |
| 87 void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true); | |
| 88 | |
| 89 // helpers for FPU flag access | |
| 90 // tmp is a temporary register, if none is available use noreg | |
| 91 void save_rax (Register tmp); | |
| 92 void restore_rax(Register tmp); | |
| 93 | |
| 94 public: | |
| 95 MacroAssembler(CodeBuffer* code) : Assembler(code) {} | |
| 96 | |
| 97 // Support for NULL-checks | |
| 98 // | |
| 99 // Generates code that causes a NULL OS exception if the content of reg is NULL. | |
| 100 // If the accessed location is M[reg + offset] and the offset is known, provide the | |
| 101 // offset. No explicit code generation is needed if the offset is within a certain | |
| 102 // range (0 <= offset <= page_size). | |
| 103 | |
| 104 void null_check(Register reg, int offset = -1); | |
| 105 static bool needs_explicit_null_check(intptr_t offset); | |
| 106 | |
| 107 // Required platform-specific helpers for Label::patch_instructions. | |
| 108 // They _shadow_ the declarations in AbstractAssembler, which are undefined. | |
| 109 void pd_patch_instruction(address branch, address target) { | |
| 110 unsigned char op = branch[0]; | |
| 111 assert(op == 0xE8 /* call */ || | |
| 112 op == 0xE9 /* jmp */ || | |
| 113 op == 0xEB /* short jmp */ || | |
| 114 (op & 0xF0) == 0x70 /* short jcc */ || | |
| 17780 | 115 op == 0x0F && (branch[1] & 0xF0) == 0x80 /* jcc */ || |
| 116 op == 0xC7 && branch[1] == 0xF8 /* xbegin */, | |
| 7199 | 117 "Invalid opcode at patch point"); |
| 118 | |
| 119 if (op == 0xEB || (op & 0xF0) == 0x70) { | |
| 120 // short offset operators (jmp and jcc) | |
| 121 char* disp = (char*) &branch[1]; | |
| 122 int imm8 = target - (address) &disp[1]; | |
| 123 guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset"); | |
| 124 *disp = imm8; | |
| 125 } else { | |
| 17780 | 126 int* disp = (int*) &branch[(op == 0x0F || op == 0xC7)? 2: 1]; |
| 7199 | 127 int imm32 = target - (address) &disp[1]; |
| 128 *disp = imm32; | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 // The following 4 methods return the offset of the appropriate move instruction | |
| 133 | |
| 134 // Support for fast byte/short loading with zero extension (depending on particular CPU) | |
| 135 int load_unsigned_byte(Register dst, Address src); | |
| 136 int load_unsigned_short(Register dst, Address src); | |
| 137 | |
| 138 // Support for fast byte/short loading with sign extension (depending on particular CPU) | |
| 139 int load_signed_byte(Register dst, Address src); | |
| 140 int load_signed_short(Register dst, Address src); | |
| 141 | |
| 142 // Support for sign-extension (hi:lo = extend_sign(lo)) | |
| 143 void extend_sign(Register hi, Register lo); | |
| 144 | |
| 145 // Load and store values by size and signed-ness | |
| 146 void load_sized_value(Register dst, Address src, size_t size_in_bytes, bool is_signed, Register dst2 = noreg); | |
| 147 void store_sized_value(Address dst, Register src, size_t size_in_bytes, Register src2 = noreg); | |
| 148 | |
| 149 // Support for inc/dec with optimal instruction selection depending on value | |
| 150 | |
| 151 void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; } | |
| 152 void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; } | |
| 153 | |
| 154 void decrementl(Address dst, int value = 1); | |
| 155 void decrementl(Register reg, int value = 1); | |
| 156 | |
| 157 void decrementq(Register reg, int value = 1); | |
| 158 void decrementq(Address dst, int value = 1); | |
| 159 | |
| 160 void incrementl(Address dst, int value = 1); | |
| 161 void incrementl(Register reg, int value = 1); | |
| 162 | |
| 163 void incrementq(Register reg, int value = 1); | |
| 164 void incrementq(Address dst, int value = 1); | |
| 165 | |
| 166 // Support optimal SSE move instructions. | |
| 167 void movflt(XMMRegister dst, XMMRegister src) { | |
| 168 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; } | |
| 169 else { movss (dst, src); return; } | |
| 170 } | |
| 171 void movflt(XMMRegister dst, Address src) { movss(dst, src); } | |
| 172 void movflt(XMMRegister dst, AddressLiteral src); | |
| 173 void movflt(Address dst, XMMRegister src) { movss(dst, src); } | |
| 174 | |
| 175 void movdbl(XMMRegister dst, XMMRegister src) { | |
| 176 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; } | |
| 177 else { movsd (dst, src); return; } | |
| 178 } | |
| 179 | |
| 180 void movdbl(XMMRegister dst, AddressLiteral src); | |
| 181 | |
| 182 void movdbl(XMMRegister dst, Address src) { | |
| 183 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; } | |
| 184 else { movlpd(dst, src); return; } | |
| 185 } | |
| 186 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); } | |
| 187 | |
| 188 void incrementl(AddressLiteral dst); | |
| 189 void incrementl(ArrayAddress dst); | |
| 190 | |
| 17780 | 191 void incrementq(AddressLiteral dst); |
| 192 | |
| 7199 | 193 // Alignment |
| 194 void align(int modulus); | |
| 195 | |
| 196 // A 5 byte nop that is safe for patching (see patch_verified_entry) | |
| 197 void fat_nop(); | |
| 198 | |
| 199 // Stack frame creation/removal | |
| 200 void enter(); | |
| 201 void leave(); | |
| 202 | |
| 203 // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information) | |
| 204 // The pointer will be loaded into the thread register. | |
| 205 void get_thread(Register thread); | |
| 206 | |
| 207 | |
| 208 // Support for VM calls | |
| 209 // | |
| 210 // It is imperative that all calls into the VM are handled via the call_VM macros. | |
| 211 // They make sure that the stack linkage is setup correctly. call_VM's correspond | |
| 212 // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points. | |
| 213 | |
| 214 | |
| 215 void call_VM(Register oop_result, | |
| 216 address entry_point, | |
| 217 bool check_exceptions = true); | |
| 218 void call_VM(Register oop_result, | |
| 219 address entry_point, | |
| 220 Register arg_1, | |
| 221 bool check_exceptions = true); | |
| 222 void call_VM(Register oop_result, | |
| 223 address entry_point, | |
| 224 Register arg_1, Register arg_2, | |
| 225 bool check_exceptions = true); | |
| 226 void call_VM(Register oop_result, | |
| 227 address entry_point, | |
| 228 Register arg_1, Register arg_2, Register arg_3, | |
| 229 bool check_exceptions = true); | |
| 230 | |
| 231 // Overloadings with last_Java_sp | |
| 232 void call_VM(Register oop_result, | |
| 233 Register last_java_sp, | |
| 234 address entry_point, | |
| 235 int number_of_arguments = 0, | |
| 236 bool check_exceptions = true); | |
| 237 void call_VM(Register oop_result, | |
| 238 Register last_java_sp, | |
| 239 address entry_point, | |
| 240 Register arg_1, bool | |
| 241 check_exceptions = true); | |
| 242 void call_VM(Register oop_result, | |
| 243 Register last_java_sp, | |
| 244 address entry_point, | |
| 245 Register arg_1, Register arg_2, | |
| 246 bool check_exceptions = true); | |
| 247 void call_VM(Register oop_result, | |
| 248 Register last_java_sp, | |
| 249 address entry_point, | |
| 250 Register arg_1, Register arg_2, Register arg_3, | |
| 251 bool check_exceptions = true); | |
| 252 | |
| 253 void get_vm_result (Register oop_result, Register thread); | |
| 254 void get_vm_result_2(Register metadata_result, Register thread); | |
| 255 | |
| 256 // These always tightly bind to MacroAssembler::call_VM_base | |
| 257 // bypassing the virtual implementation | |
| 258 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, int number_of_arguments = 0, bool check_exceptions = true); | |
| 259 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true); | |
| 260 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true); | |
| 261 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true); | |
| 262 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, Register arg_4, bool check_exceptions = true); | |
| 263 | |
| 264 void call_VM_leaf(address entry_point, | |
| 265 int number_of_arguments = 0); | |
| 266 void call_VM_leaf(address entry_point, | |
| 267 Register arg_1); | |
| 268 void call_VM_leaf(address entry_point, | |
| 269 Register arg_1, Register arg_2); | |
| 270 void call_VM_leaf(address entry_point, | |
| 271 Register arg_1, Register arg_2, Register arg_3); | |
| 272 | |
| 273 // These always tightly bind to MacroAssembler::call_VM_leaf_base | |
| 274 // bypassing the virtual implementation | |
| 275 void super_call_VM_leaf(address entry_point); | |
| 276 void super_call_VM_leaf(address entry_point, Register arg_1); | |
| 277 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2); | |
| 278 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3); | |
| 279 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3, Register arg_4); | |
| 280 | |
| 281 // last Java Frame (fills frame anchor) | |
| 282 void set_last_Java_frame(Register thread, | |
| 283 Register last_java_sp, | |
| 284 Register last_java_fp, | |
| 285 address last_java_pc); | |
| 286 | |
| 287 // thread in the default location (r15_thread on 64bit) | |
| 288 void set_last_Java_frame(Register last_java_sp, | |
| 289 Register last_java_fp, | |
| 290 address last_java_pc); | |
| 291 | |
| 292 void reset_last_Java_frame(Register thread, bool clear_fp, bool clear_pc); | |
| 293 | |
| 294 // thread in the default location (r15_thread on 64bit) | |
| 295 void reset_last_Java_frame(bool clear_fp, bool clear_pc); | |
| 296 | |
| 297 // Stores | |
| 298 void store_check(Register obj); // store check for obj - register is destroyed afterwards | |
| 299 void store_check(Register obj, Address dst); // same as above, dst is exact store location (reg. is destroyed) | |
| 300 | |
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301 #if INCLUDE_ALL_GCS |
| 7199 | 302 |
| 303 void g1_write_barrier_pre(Register obj, | |
| 304 Register pre_val, | |
| 305 Register thread, | |
| 306 Register tmp, | |
| 307 bool tosca_live, | |
| 308 bool expand_call); | |
| 309 | |
| 310 void g1_write_barrier_post(Register store_addr, | |
| 311 Register new_val, | |
| 312 Register thread, | |
| 313 Register tmp, | |
| 314 Register tmp2); | |
| 315 | |
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316 #endif // INCLUDE_ALL_GCS |
| 7199 | 317 |
| 318 // split store_check(Register obj) to enhance instruction interleaving | |
| 319 void store_check_part_1(Register obj); | |
| 320 void store_check_part_2(Register obj); | |
| 321 | |
| 322 // C 'boolean' to Java boolean: x == 0 ? 0 : 1 | |
| 323 void c2bool(Register x); | |
| 324 | |
| 325 // C++ bool manipulation | |
| 326 | |
| 327 void movbool(Register dst, Address src); | |
| 328 void movbool(Address dst, bool boolconst); | |
| 329 void movbool(Address dst, Register src); | |
| 330 void testbool(Register dst); | |
| 331 | |
| 332 // oop manipulations | |
| 333 void load_klass(Register dst, Register src); | |
| 334 void store_klass(Register dst, Register src); | |
| 335 | |
| 336 void load_heap_oop(Register dst, Address src); | |
| 337 void load_heap_oop_not_null(Register dst, Address src); | |
| 338 void store_heap_oop(Address dst, Register src); | |
| 339 void cmp_heap_oop(Register src1, Address src2, Register tmp = noreg); | |
| 340 | |
| 341 // Used for storing NULL. All other oop constants should be | |
| 342 // stored using routines that take a jobject. | |
| 343 void store_heap_oop_null(Address dst); | |
| 344 | |
| 345 void load_prototype_header(Register dst, Register src); | |
| 346 | |
| 347 #ifdef _LP64 | |
| 348 void store_klass_gap(Register dst, Register src); | |
| 349 | |
| 350 // This dummy is to prevent a call to store_heap_oop from | |
| 351 // converting a zero (like NULL) into a Register by giving | |
| 352 // the compiler two choices it can't resolve | |
| 353 | |
| 354 void store_heap_oop(Address dst, void* dummy); | |
| 355 | |
| 356 void encode_heap_oop(Register r); | |
| 357 void decode_heap_oop(Register r); | |
| 358 void encode_heap_oop_not_null(Register r); | |
| 359 void decode_heap_oop_not_null(Register r); | |
| 360 void encode_heap_oop_not_null(Register dst, Register src); | |
| 361 void decode_heap_oop_not_null(Register dst, Register src); | |
| 362 | |
| 363 void set_narrow_oop(Register dst, jobject obj); | |
| 364 void set_narrow_oop(Address dst, jobject obj); | |
| 365 void cmp_narrow_oop(Register dst, jobject obj); | |
| 366 void cmp_narrow_oop(Address dst, jobject obj); | |
| 367 | |
| 368 void encode_klass_not_null(Register r); | |
| 369 void decode_klass_not_null(Register r); | |
| 370 void encode_klass_not_null(Register dst, Register src); | |
| 371 void decode_klass_not_null(Register dst, Register src); | |
| 372 void set_narrow_klass(Register dst, Klass* k); | |
| 373 void set_narrow_klass(Address dst, Klass* k); | |
| 374 void cmp_narrow_klass(Register dst, Klass* k); | |
| 375 void cmp_narrow_klass(Address dst, Klass* k); | |
| 376 | |
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377 // Returns the byte size of the instructions generated by decode_klass_not_null() |
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378 // when compressed klass pointers are being used. |
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379 static int instr_size_for_decode_klass_not_null(); |
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380 |
| 7199 | 381 // if heap base register is used - reinit it with the correct value |
| 382 void reinit_heapbase(); | |
| 383 | |
| 384 DEBUG_ONLY(void verify_heapbase(const char* msg);) | |
| 385 | |
| 386 #endif // _LP64 | |
| 387 | |
| 388 // Int division/remainder for Java | |
| 389 // (as idivl, but checks for special case as described in JVM spec.) | |
| 390 // returns idivl instruction offset for implicit exception handling | |
| 391 int corrected_idivl(Register reg); | |
| 392 | |
| 393 // Long division/remainder for Java | |
| 394 // (as idivq, but checks for special case as described in JVM spec.) | |
| 395 // returns idivq instruction offset for implicit exception handling | |
| 396 int corrected_idivq(Register reg); | |
| 397 | |
| 398 void int3(); | |
| 399 | |
| 400 // Long operation macros for a 32bit cpu | |
| 401 // Long negation for Java | |
| 402 void lneg(Register hi, Register lo); | |
| 403 | |
| 404 // Long multiplication for Java | |
| 405 // (destroys contents of eax, ebx, ecx and edx) | |
| 406 void lmul(int x_rsp_offset, int y_rsp_offset); // rdx:rax = x * y | |
| 407 | |
| 408 // Long shifts for Java | |
| 409 // (semantics as described in JVM spec.) | |
| 410 void lshl(Register hi, Register lo); // hi:lo << (rcx & 0x3f) | |
| 411 void lshr(Register hi, Register lo, bool sign_extension = false); // hi:lo >> (rcx & 0x3f) | |
| 412 | |
| 413 // Long compare for Java | |
| 414 // (semantics as described in JVM spec.) | |
| 415 void lcmp2int(Register x_hi, Register x_lo, Register y_hi, Register y_lo); // x_hi = lcmp(x, y) | |
| 416 | |
| 417 | |
| 418 // misc | |
| 419 | |
| 420 // Sign extension | |
| 421 void sign_extend_short(Register reg); | |
| 422 void sign_extend_byte(Register reg); | |
| 423 | |
| 424 // Division by power of 2, rounding towards 0 | |
| 425 void division_with_shift(Register reg, int shift_value); | |
| 426 | |
| 427 // Compares the top-most stack entries on the FPU stack and sets the eflags as follows: | |
| 428 // | |
| 429 // CF (corresponds to C0) if x < y | |
| 430 // PF (corresponds to C2) if unordered | |
| 431 // ZF (corresponds to C3) if x = y | |
| 432 // | |
| 433 // The arguments are in reversed order on the stack (i.e., top of stack is first argument). | |
| 434 // tmp is a temporary register, if none is available use noreg (only matters for non-P6 code) | |
| 435 void fcmp(Register tmp); | |
| 436 // Variant of the above which allows y to be further down the stack | |
| 437 // and which only pops x and y if specified. If pop_right is | |
| 438 // specified then pop_left must also be specified. | |
| 439 void fcmp(Register tmp, int index, bool pop_left, bool pop_right); | |
| 440 | |
| 441 // Floating-point comparison for Java | |
| 442 // Compares the top-most stack entries on the FPU stack and stores the result in dst. | |
| 443 // The arguments are in reversed order on the stack (i.e., top of stack is first argument). | |
| 444 // (semantics as described in JVM spec.) | |
| 445 void fcmp2int(Register dst, bool unordered_is_less); | |
| 446 // Variant of the above which allows y to be further down the stack | |
| 447 // and which only pops x and y if specified. If pop_right is | |
| 448 // specified then pop_left must also be specified. | |
| 449 void fcmp2int(Register dst, bool unordered_is_less, int index, bool pop_left, bool pop_right); | |
| 450 | |
| 451 // Floating-point remainder for Java (ST0 = ST0 fremr ST1, ST1 is empty afterwards) | |
| 452 // tmp is a temporary register, if none is available use noreg | |
| 453 void fremr(Register tmp); | |
| 454 | |
| 455 | |
| 456 // same as fcmp2int, but using SSE2 | |
| 457 void cmpss2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less); | |
| 458 void cmpsd2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less); | |
| 459 | |
| 460 // Inlined sin/cos generator for Java; must not use CPU instruction | |
| 461 // directly on Intel as it does not have high enough precision | |
| 462 // outside of the range [-pi/4, pi/4]. Extra argument indicate the | |
| 463 // number of FPU stack slots in use; all but the topmost will | |
| 464 // require saving if a slow case is necessary. Assumes argument is | |
| 465 // on FP TOS; result is on FP TOS. No cpu registers are changed by | |
| 466 // this code. | |
| 467 void trigfunc(char trig, int num_fpu_regs_in_use = 1); | |
| 468 | |
| 469 // branch to L if FPU flag C2 is set/not set | |
| 470 // tmp is a temporary register, if none is available use noreg | |
| 471 void jC2 (Register tmp, Label& L); | |
| 472 void jnC2(Register tmp, Label& L); | |
| 473 | |
| 474 // Pop ST (ffree & fincstp combined) | |
| 475 void fpop(); | |
| 476 | |
| 477 // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack | |
| 478 void push_fTOS(); | |
| 479 | |
| 480 // pops double TOS element from CPU stack and pushes on FPU stack | |
| 481 void pop_fTOS(); | |
| 482 | |
| 483 void empty_FPU_stack(); | |
| 484 | |
| 485 void push_IU_state(); | |
| 486 void pop_IU_state(); | |
| 487 | |
| 488 void push_FPU_state(); | |
| 489 void pop_FPU_state(); | |
| 490 | |
| 491 void push_CPU_state(); | |
| 492 void pop_CPU_state(); | |
| 493 | |
| 494 // Round up to a power of two | |
| 495 void round_to(Register reg, int modulus); | |
| 496 | |
| 497 // Callee saved registers handling | |
| 498 void push_callee_saved_registers(); | |
| 499 void pop_callee_saved_registers(); | |
| 500 | |
| 501 // allocation | |
| 502 void eden_allocate( | |
| 503 Register obj, // result: pointer to object after successful allocation | |
| 504 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise | |
| 505 int con_size_in_bytes, // object size in bytes if known at compile time | |
| 506 Register t1, // temp register | |
| 507 Label& slow_case // continuation point if fast allocation fails | |
| 508 ); | |
| 509 void tlab_allocate( | |
| 510 Register obj, // result: pointer to object after successful allocation | |
| 511 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise | |
| 512 int con_size_in_bytes, // object size in bytes if known at compile time | |
| 513 Register t1, // temp register | |
| 514 Register t2, // temp register | |
| 515 Label& slow_case // continuation point if fast allocation fails | |
| 516 ); | |
| 517 Register tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case); // returns TLS address | |
| 518 void incr_allocated_bytes(Register thread, | |
| 519 Register var_size_in_bytes, int con_size_in_bytes, | |
| 520 Register t1 = noreg); | |
| 521 | |
| 522 // interface method calling | |
| 523 void lookup_interface_method(Register recv_klass, | |
| 524 Register intf_klass, | |
| 525 RegisterOrConstant itable_index, | |
| 526 Register method_result, | |
| 527 Register scan_temp, | |
| 528 Label& no_such_interface); | |
| 529 | |
| 530 // virtual method calling | |
| 531 void lookup_virtual_method(Register recv_klass, | |
| 532 RegisterOrConstant vtable_index, | |
| 533 Register method_result); | |
| 534 | |
| 535 // Test sub_klass against super_klass, with fast and slow paths. | |
| 536 | |
| 537 // The fast path produces a tri-state answer: yes / no / maybe-slow. | |
| 538 // One of the three labels can be NULL, meaning take the fall-through. | |
| 539 // If super_check_offset is -1, the value is loaded up from super_klass. | |
| 540 // No registers are killed, except temp_reg. | |
| 541 void check_klass_subtype_fast_path(Register sub_klass, | |
| 542 Register super_klass, | |
| 543 Register temp_reg, | |
| 544 Label* L_success, | |
| 545 Label* L_failure, | |
| 546 Label* L_slow_path, | |
| 547 RegisterOrConstant super_check_offset = RegisterOrConstant(-1)); | |
| 548 | |
| 549 // The rest of the type check; must be wired to a corresponding fast path. | |
| 550 // It does not repeat the fast path logic, so don't use it standalone. | |
| 551 // The temp_reg and temp2_reg can be noreg, if no temps are available. | |
| 552 // Updates the sub's secondary super cache as necessary. | |
| 553 // If set_cond_codes, condition codes will be Z on success, NZ on failure. | |
| 554 void check_klass_subtype_slow_path(Register sub_klass, | |
| 555 Register super_klass, | |
| 556 Register temp_reg, | |
| 557 Register temp2_reg, | |
| 558 Label* L_success, | |
| 559 Label* L_failure, | |
| 560 bool set_cond_codes = false); | |
| 561 | |
| 562 // Simplified, combined version, good for typical uses. | |
| 563 // Falls through on failure. | |
| 564 void check_klass_subtype(Register sub_klass, | |
| 565 Register super_klass, | |
| 566 Register temp_reg, | |
| 567 Label& L_success); | |
| 568 | |
| 569 // method handles (JSR 292) | |
| 570 Address argument_address(RegisterOrConstant arg_slot, int extra_slot_offset = 0); | |
| 571 | |
| 572 //---- | |
| 573 void set_word_if_not_zero(Register reg); // sets reg to 1 if not zero, otherwise 0 | |
| 574 | |
| 575 // Debugging | |
| 576 | |
| 577 // only if +VerifyOops | |
| 578 // TODO: Make these macros with file and line like sparc version! | |
| 579 void verify_oop(Register reg, const char* s = "broken oop"); | |
| 580 void verify_oop_addr(Address addr, const char * s = "broken oop addr"); | |
| 581 | |
| 582 // TODO: verify method and klass metadata (compare against vptr?) | |
| 583 void _verify_method_ptr(Register reg, const char * msg, const char * file, int line) {} | |
| 584 void _verify_klass_ptr(Register reg, const char * msg, const char * file, int line){} | |
| 585 | |
| 586 #define verify_method_ptr(reg) _verify_method_ptr(reg, "broken method " #reg, __FILE__, __LINE__) | |
| 587 #define verify_klass_ptr(reg) _verify_klass_ptr(reg, "broken klass " #reg, __FILE__, __LINE__) | |
| 588 | |
| 589 // only if +VerifyFPU | |
| 590 void verify_FPU(int stack_depth, const char* s = "illegal FPU state"); | |
| 591 | |
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592 // Verify or restore cpu control state after JNI call |
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593 void restore_cpu_control_state_after_jni(); |
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594 |
| 7199 | 595 // prints msg, dumps registers and stops execution |
| 596 void stop(const char* msg); | |
| 597 | |
| 598 // prints msg and continues | |
| 599 void warn(const char* msg); | |
| 600 | |
| 601 // dumps registers and other state | |
| 602 void print_state(); | |
| 603 | |
| 604 static void debug32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip, char* msg); | |
| 605 static void debug64(char* msg, int64_t pc, int64_t regs[]); | |
| 606 static void print_state32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip); | |
| 607 static void print_state64(int64_t pc, int64_t regs[]); | |
| 608 | |
| 609 void os_breakpoint(); | |
| 610 | |
| 611 void untested() { stop("untested"); } | |
| 612 | |
| 613 void unimplemented(const char* what = "") { char* b = new char[1024]; jio_snprintf(b, 1024, "unimplemented: %s", what); stop(b); } | |
| 614 | |
| 615 void should_not_reach_here() { stop("should not reach here"); } | |
| 616 | |
| 617 void print_CPU_state(); | |
| 618 | |
| 619 // Stack overflow checking | |
| 620 void bang_stack_with_offset(int offset) { | |
| 621 // stack grows down, caller passes positive offset | |
| 622 assert(offset > 0, "must bang with negative offset"); | |
| 623 movl(Address(rsp, (-offset)), rax); | |
| 624 } | |
| 625 | |
| 626 // Writes to stack successive pages until offset reached to check for | |
| 627 // stack overflow + shadow pages. Also, clobbers tmp | |
| 628 void bang_stack_size(Register size, Register tmp); | |
| 629 | |
| 630 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr, | |
| 631 Register tmp, | |
| 632 int offset); | |
| 633 | |
| 634 // Support for serializing memory accesses between threads | |
| 635 void serialize_memory(Register thread, Register tmp); | |
| 636 | |
| 637 void verify_tlab(); | |
| 638 | |
| 639 // Biased locking support | |
| 640 // lock_reg and obj_reg must be loaded up with the appropriate values. | |
| 641 // swap_reg must be rax, and is killed. | |
| 642 // tmp_reg is optional. If it is supplied (i.e., != noreg) it will | |
| 643 // be killed; if not supplied, push/pop will be used internally to | |
| 644 // allocate a temporary (inefficient, avoid if possible). | |
| 645 // Optional slow case is for implementations (interpreter and C1) which branch to | |
| 646 // slow case directly. Leaves condition codes set for C2's Fast_Lock node. | |
| 647 // Returns offset of first potentially-faulting instruction for null | |
| 648 // check info (currently consumed only by C1). If | |
| 649 // swap_reg_contains_mark is true then returns -1 as it is assumed | |
| 650 // the calling code has already passed any potential faults. | |
| 651 int biased_locking_enter(Register lock_reg, Register obj_reg, | |
| 652 Register swap_reg, Register tmp_reg, | |
| 653 bool swap_reg_contains_mark, | |
| 654 Label& done, Label* slow_case = NULL, | |
| 655 BiasedLockingCounters* counters = NULL); | |
| 656 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done); | |
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657 #ifdef COMPILER2 |
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658 // Code used by cmpFastLock and cmpFastUnlock mach instructions in .ad file. |
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659 // See full desription in macroAssembler_x86.cpp. |
| 17780 | 660 void fast_lock(Register obj, Register box, Register tmp, |
| 661 Register scr, Register cx1, Register cx2, | |
| 662 BiasedLockingCounters* counters, | |
| 663 RTMLockingCounters* rtm_counters, | |
| 664 RTMLockingCounters* stack_rtm_counters, | |
| 665 Metadata* method_data, | |
| 666 bool use_rtm, bool profile_rtm); | |
| 667 void fast_unlock(Register obj, Register box, Register tmp, bool use_rtm); | |
| 668 #if INCLUDE_RTM_OPT | |
| 669 void rtm_counters_update(Register abort_status, Register rtm_counters); | |
| 670 void branch_on_random_using_rdtsc(Register tmp, Register scr, int count, Label& brLabel); | |
| 671 void rtm_abort_ratio_calculation(Register tmp, Register rtm_counters_reg, | |
| 672 RTMLockingCounters* rtm_counters, | |
| 673 Metadata* method_data); | |
| 674 void rtm_profiling(Register abort_status_Reg, Register rtm_counters_Reg, | |
| 675 RTMLockingCounters* rtm_counters, Metadata* method_data, bool profile_rtm); | |
| 676 void rtm_retry_lock_on_abort(Register retry_count, Register abort_status, Label& retryLabel); | |
| 677 void rtm_retry_lock_on_busy(Register retry_count, Register box, Register tmp, Register scr, Label& retryLabel); | |
| 678 void rtm_stack_locking(Register obj, Register tmp, Register scr, | |
| 679 Register retry_on_abort_count, | |
| 680 RTMLockingCounters* stack_rtm_counters, | |
| 681 Metadata* method_data, bool profile_rtm, | |
| 682 Label& DONE_LABEL, Label& IsInflated); | |
| 683 void rtm_inflated_locking(Register obj, Register box, Register tmp, | |
| 684 Register scr, Register retry_on_busy_count, | |
| 685 Register retry_on_abort_count, | |
| 686 RTMLockingCounters* rtm_counters, | |
| 687 Metadata* method_data, bool profile_rtm, | |
| 688 Label& DONE_LABEL); | |
| 689 #endif | |
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690 #endif |
| 7199 | 691 |
| 692 Condition negate_condition(Condition cond); | |
| 693 | |
| 694 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit | |
| 695 // operands. In general the names are modified to avoid hiding the instruction in Assembler | |
| 696 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers | |
| 697 // here in MacroAssembler. The major exception to this rule is call | |
| 698 | |
| 699 // Arithmetics | |
| 700 | |
| 701 | |
| 702 void addptr(Address dst, int32_t src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)) ; } | |
| 703 void addptr(Address dst, Register src); | |
| 704 | |
| 705 void addptr(Register dst, Address src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)); } | |
| 706 void addptr(Register dst, int32_t src); | |
| 707 void addptr(Register dst, Register src); | |
| 708 void addptr(Register dst, RegisterOrConstant src) { | |
| 709 if (src.is_constant()) addptr(dst, (int) src.as_constant()); | |
| 710 else addptr(dst, src.as_register()); | |
| 711 } | |
| 712 | |
| 713 void andptr(Register dst, int32_t src); | |
| 714 void andptr(Register src1, Register src2) { LP64_ONLY(andq(src1, src2)) NOT_LP64(andl(src1, src2)) ; } | |
| 715 | |
| 716 void cmp8(AddressLiteral src1, int imm); | |
| 717 | |
| 718 // renamed to drag out the casting of address to int32_t/intptr_t | |
| 719 void cmp32(Register src1, int32_t imm); | |
| 720 | |
| 721 void cmp32(AddressLiteral src1, int32_t imm); | |
| 722 // compare reg - mem, or reg - &mem | |
| 723 void cmp32(Register src1, AddressLiteral src2); | |
| 724 | |
| 725 void cmp32(Register src1, Address src2); | |
| 726 | |
| 727 #ifndef _LP64 | |
| 728 void cmpklass(Address dst, Metadata* obj); | |
| 729 void cmpklass(Register dst, Metadata* obj); | |
| 730 void cmpoop(Address dst, jobject obj); | |
| 731 void cmpoop(Register dst, jobject obj); | |
| 732 #endif // _LP64 | |
| 733 | |
| 734 // NOTE src2 must be the lval. This is NOT an mem-mem compare | |
| 735 void cmpptr(Address src1, AddressLiteral src2); | |
| 736 | |
| 737 void cmpptr(Register src1, AddressLiteral src2); | |
| 738 | |
| 739 void cmpptr(Register src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } | |
| 740 void cmpptr(Register src1, Address src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } | |
| 741 // void cmpptr(Address src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } | |
| 742 | |
| 743 void cmpptr(Register src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } | |
| 744 void cmpptr(Address src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } | |
| 745 | |
| 746 // cmp64 to avoild hiding cmpq | |
| 747 void cmp64(Register src1, AddressLiteral src); | |
| 748 | |
| 749 void cmpxchgptr(Register reg, Address adr); | |
| 750 | |
| 751 void locked_cmpxchgptr(Register reg, AddressLiteral adr); | |
| 752 | |
| 753 | |
| 754 void imulptr(Register dst, Register src) { LP64_ONLY(imulq(dst, src)) NOT_LP64(imull(dst, src)); } | |
| 17780 | 755 void imulptr(Register dst, Register src, int imm32) { LP64_ONLY(imulq(dst, src, imm32)) NOT_LP64(imull(dst, src, imm32)); } |
| 7199 | 756 |
| 757 | |
| 758 void negptr(Register dst) { LP64_ONLY(negq(dst)) NOT_LP64(negl(dst)); } | |
| 759 | |
| 760 void notptr(Register dst) { LP64_ONLY(notq(dst)) NOT_LP64(notl(dst)); } | |
| 761 | |
| 762 void shlptr(Register dst, int32_t shift); | |
| 763 void shlptr(Register dst) { LP64_ONLY(shlq(dst)) NOT_LP64(shll(dst)); } | |
| 764 | |
| 765 void shrptr(Register dst, int32_t shift); | |
| 766 void shrptr(Register dst) { LP64_ONLY(shrq(dst)) NOT_LP64(shrl(dst)); } | |
| 767 | |
| 768 void sarptr(Register dst) { LP64_ONLY(sarq(dst)) NOT_LP64(sarl(dst)); } | |
| 769 void sarptr(Register dst, int32_t src) { LP64_ONLY(sarq(dst, src)) NOT_LP64(sarl(dst, src)); } | |
| 770 | |
| 771 void subptr(Address dst, int32_t src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); } | |
| 772 | |
| 773 void subptr(Register dst, Address src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); } | |
| 774 void subptr(Register dst, int32_t src); | |
| 775 // Force generation of a 4 byte immediate value even if it fits into 8bit | |
| 776 void subptr_imm32(Register dst, int32_t src); | |
| 777 void subptr(Register dst, Register src); | |
| 778 void subptr(Register dst, RegisterOrConstant src) { | |
| 779 if (src.is_constant()) subptr(dst, (int) src.as_constant()); | |
| 780 else subptr(dst, src.as_register()); | |
| 781 } | |
| 782 | |
| 783 void sbbptr(Address dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); } | |
| 784 void sbbptr(Register dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); } | |
| 785 | |
| 786 void xchgptr(Register src1, Register src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; } | |
| 787 void xchgptr(Register src1, Address src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; } | |
| 788 | |
| 789 void xaddptr(Address src1, Register src2) { LP64_ONLY(xaddq(src1, src2)) NOT_LP64(xaddl(src1, src2)) ; } | |
| 790 | |
| 791 | |
| 792 | |
| 793 // Helper functions for statistics gathering. | |
| 794 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes. | |
| 795 void cond_inc32(Condition cond, AddressLiteral counter_addr); | |
| 796 // Unconditional atomic increment. | |
| 17780 | 797 void atomic_incl(Address counter_addr); |
| 798 void atomic_incl(AddressLiteral counter_addr, Register scr = rscratch1); | |
| 799 #ifdef _LP64 | |
| 800 void atomic_incq(Address counter_addr); | |
| 801 void atomic_incq(AddressLiteral counter_addr, Register scr = rscratch1); | |
| 802 #endif | |
| 803 void atomic_incptr(AddressLiteral counter_addr, Register scr = rscratch1) { LP64_ONLY(atomic_incq(counter_addr, scr)) NOT_LP64(atomic_incl(counter_addr, scr)) ; } | |
| 804 void atomic_incptr(Address counter_addr) { LP64_ONLY(atomic_incq(counter_addr)) NOT_LP64(atomic_incl(counter_addr)) ; } | |
| 7199 | 805 |
| 806 void lea(Register dst, AddressLiteral adr); | |
| 807 void lea(Address dst, AddressLiteral adr); | |
| 808 void lea(Register dst, Address adr) { Assembler::lea(dst, adr); } | |
| 809 | |
| 810 void leal32(Register dst, Address src) { leal(dst, src); } | |
| 811 | |
| 812 // Import other testl() methods from the parent class or else | |
| 813 // they will be hidden by the following overriding declaration. | |
| 814 using Assembler::testl; | |
| 815 void testl(Register dst, AddressLiteral src); | |
| 816 | |
| 817 void orptr(Register dst, Address src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); } | |
| 818 void orptr(Register dst, Register src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); } | |
| 819 void orptr(Register dst, int32_t src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); } | |
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820 void orptr(Address dst, int32_t imm32) { LP64_ONLY(orq(dst, imm32)) NOT_LP64(orl(dst, imm32)); } |
| 7199 | 821 |
| 822 void testptr(Register src, int32_t imm32) { LP64_ONLY(testq(src, imm32)) NOT_LP64(testl(src, imm32)); } | |
| 823 void testptr(Register src1, Register src2); | |
| 824 | |
| 825 void xorptr(Register dst, Register src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); } | |
| 826 void xorptr(Register dst, Address src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); } | |
| 827 | |
| 828 // Calls | |
| 829 | |
| 830 void call(Label& L, relocInfo::relocType rtype); | |
| 831 void call(Register entry); | |
| 832 | |
| 833 // NOTE: this call tranfers to the effective address of entry NOT | |
| 834 // the address contained by entry. This is because this is more natural | |
| 835 // for jumps/calls. | |
| 836 void call(AddressLiteral entry); | |
| 837 | |
| 838 // Emit the CompiledIC call idiom | |
| 839 void ic_call(address entry); | |
| 840 | |
| 841 // Jumps | |
| 842 | |
| 843 // NOTE: these jumps tranfer to the effective address of dst NOT | |
| 844 // the address contained by dst. This is because this is more natural | |
| 845 // for jumps/calls. | |
| 846 void jump(AddressLiteral dst); | |
| 847 void jump_cc(Condition cc, AddressLiteral dst); | |
| 848 | |
| 849 // 32bit can do a case table jump in one instruction but we no longer allow the base | |
| 850 // to be installed in the Address class. This jump will tranfers to the address | |
| 851 // contained in the location described by entry (not the address of entry) | |
| 852 void jump(ArrayAddress entry); | |
| 853 | |
| 854 // Floating | |
| 855 | |
| 856 void andpd(XMMRegister dst, Address src) { Assembler::andpd(dst, src); } | |
| 857 void andpd(XMMRegister dst, AddressLiteral src); | |
| 858 | |
| 859 void andps(XMMRegister dst, XMMRegister src) { Assembler::andps(dst, src); } | |
| 860 void andps(XMMRegister dst, Address src) { Assembler::andps(dst, src); } | |
| 861 void andps(XMMRegister dst, AddressLiteral src); | |
| 862 | |
| 863 void comiss(XMMRegister dst, XMMRegister src) { Assembler::comiss(dst, src); } | |
| 864 void comiss(XMMRegister dst, Address src) { Assembler::comiss(dst, src); } | |
| 865 void comiss(XMMRegister dst, AddressLiteral src); | |
| 866 | |
| 867 void comisd(XMMRegister dst, XMMRegister src) { Assembler::comisd(dst, src); } | |
| 868 void comisd(XMMRegister dst, Address src) { Assembler::comisd(dst, src); } | |
| 869 void comisd(XMMRegister dst, AddressLiteral src); | |
| 870 | |
| 871 void fadd_s(Address src) { Assembler::fadd_s(src); } | |
| 872 void fadd_s(AddressLiteral src) { Assembler::fadd_s(as_Address(src)); } | |
| 873 | |
| 874 void fldcw(Address src) { Assembler::fldcw(src); } | |
| 875 void fldcw(AddressLiteral src); | |
| 876 | |
| 877 void fld_s(int index) { Assembler::fld_s(index); } | |
| 878 void fld_s(Address src) { Assembler::fld_s(src); } | |
| 879 void fld_s(AddressLiteral src); | |
| 880 | |
| 881 void fld_d(Address src) { Assembler::fld_d(src); } | |
| 882 void fld_d(AddressLiteral src); | |
| 883 | |
| 884 void fld_x(Address src) { Assembler::fld_x(src); } | |
| 885 void fld_x(AddressLiteral src); | |
| 886 | |
| 887 void fmul_s(Address src) { Assembler::fmul_s(src); } | |
| 888 void fmul_s(AddressLiteral src) { Assembler::fmul_s(as_Address(src)); } | |
| 889 | |
| 890 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); } | |
| 891 void ldmxcsr(AddressLiteral src); | |
| 892 | |
| 893 // compute pow(x,y) and exp(x) with x86 instructions. Don't cover | |
| 894 // all corner cases and may result in NaN and require fallback to a | |
| 895 // runtime call. | |
| 896 void fast_pow(); | |
| 897 void fast_exp(); | |
| 898 void increase_precision(); | |
| 899 void restore_precision(); | |
| 900 | |
| 901 // computes exp(x). Fallback to runtime call included. | |
| 902 void exp_with_fallback(int num_fpu_regs_in_use) { pow_or_exp(true, num_fpu_regs_in_use); } | |
| 903 // computes pow(x,y). Fallback to runtime call included. | |
| 904 void pow_with_fallback(int num_fpu_regs_in_use) { pow_or_exp(false, num_fpu_regs_in_use); } | |
| 905 | |
| 906 private: | |
| 907 | |
| 908 // call runtime as a fallback for trig functions and pow/exp. | |
| 909 void fp_runtime_fallback(address runtime_entry, int nb_args, int num_fpu_regs_in_use); | |
| 910 | |
| 911 // computes 2^(Ylog2X); Ylog2X in ST(0) | |
| 912 void pow_exp_core_encoding(); | |
| 913 | |
| 914 // computes pow(x,y) or exp(x). Fallback to runtime call included. | |
| 915 void pow_or_exp(bool is_exp, int num_fpu_regs_in_use); | |
| 916 | |
| 917 // these are private because users should be doing movflt/movdbl | |
| 918 | |
| 919 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); } | |
| 920 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); } | |
| 921 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); } | |
| 922 void movss(XMMRegister dst, AddressLiteral src); | |
| 923 | |
| 924 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); } | |
| 925 void movlpd(XMMRegister dst, AddressLiteral src); | |
| 926 | |
| 927 public: | |
| 928 | |
| 929 void addsd(XMMRegister dst, XMMRegister src) { Assembler::addsd(dst, src); } | |
| 930 void addsd(XMMRegister dst, Address src) { Assembler::addsd(dst, src); } | |
| 931 void addsd(XMMRegister dst, AddressLiteral src); | |
| 932 | |
| 933 void addss(XMMRegister dst, XMMRegister src) { Assembler::addss(dst, src); } | |
| 934 void addss(XMMRegister dst, Address src) { Assembler::addss(dst, src); } | |
| 935 void addss(XMMRegister dst, AddressLiteral src); | |
| 936 | |
| 937 void divsd(XMMRegister dst, XMMRegister src) { Assembler::divsd(dst, src); } | |
| 938 void divsd(XMMRegister dst, Address src) { Assembler::divsd(dst, src); } | |
| 939 void divsd(XMMRegister dst, AddressLiteral src); | |
| 940 | |
| 941 void divss(XMMRegister dst, XMMRegister src) { Assembler::divss(dst, src); } | |
| 942 void divss(XMMRegister dst, Address src) { Assembler::divss(dst, src); } | |
| 943 void divss(XMMRegister dst, AddressLiteral src); | |
| 944 | |
| 945 // Move Unaligned Double Quadword | |
| 946 void movdqu(Address dst, XMMRegister src) { Assembler::movdqu(dst, src); } | |
| 947 void movdqu(XMMRegister dst, Address src) { Assembler::movdqu(dst, src); } | |
| 948 void movdqu(XMMRegister dst, XMMRegister src) { Assembler::movdqu(dst, src); } | |
| 949 void movdqu(XMMRegister dst, AddressLiteral src); | |
| 950 | |
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951 // Move Aligned Double Quadword |
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952 void movdqa(XMMRegister dst, Address src) { Assembler::movdqa(dst, src); } |
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953 void movdqa(XMMRegister dst, XMMRegister src) { Assembler::movdqa(dst, src); } |
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954 void movdqa(XMMRegister dst, AddressLiteral src); |
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955 |
| 7199 | 956 void movsd(XMMRegister dst, XMMRegister src) { Assembler::movsd(dst, src); } |
| 957 void movsd(Address dst, XMMRegister src) { Assembler::movsd(dst, src); } | |
| 958 void movsd(XMMRegister dst, Address src) { Assembler::movsd(dst, src); } | |
| 959 void movsd(XMMRegister dst, AddressLiteral src); | |
| 960 | |
| 961 void mulsd(XMMRegister dst, XMMRegister src) { Assembler::mulsd(dst, src); } | |
| 962 void mulsd(XMMRegister dst, Address src) { Assembler::mulsd(dst, src); } | |
| 963 void mulsd(XMMRegister dst, AddressLiteral src); | |
| 964 | |
| 965 void mulss(XMMRegister dst, XMMRegister src) { Assembler::mulss(dst, src); } | |
| 966 void mulss(XMMRegister dst, Address src) { Assembler::mulss(dst, src); } | |
| 967 void mulss(XMMRegister dst, AddressLiteral src); | |
| 968 | |
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969 // Carry-Less Multiplication Quadword |
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970 void pclmulldq(XMMRegister dst, XMMRegister src) { |
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971 // 0x00 - multiply lower 64 bits [0:63] |
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972 Assembler::pclmulqdq(dst, src, 0x00); |
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973 } |
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974 void pclmulhdq(XMMRegister dst, XMMRegister src) { |
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975 // 0x11 - multiply upper 64 bits [64:127] |
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976 Assembler::pclmulqdq(dst, src, 0x11); |
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977 } |
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978 |
| 7199 | 979 void sqrtsd(XMMRegister dst, XMMRegister src) { Assembler::sqrtsd(dst, src); } |
| 980 void sqrtsd(XMMRegister dst, Address src) { Assembler::sqrtsd(dst, src); } | |
| 981 void sqrtsd(XMMRegister dst, AddressLiteral src); | |
| 982 | |
| 983 void sqrtss(XMMRegister dst, XMMRegister src) { Assembler::sqrtss(dst, src); } | |
| 984 void sqrtss(XMMRegister dst, Address src) { Assembler::sqrtss(dst, src); } | |
| 985 void sqrtss(XMMRegister dst, AddressLiteral src); | |
| 986 | |
| 987 void subsd(XMMRegister dst, XMMRegister src) { Assembler::subsd(dst, src); } | |
| 988 void subsd(XMMRegister dst, Address src) { Assembler::subsd(dst, src); } | |
| 989 void subsd(XMMRegister dst, AddressLiteral src); | |
| 990 | |
| 991 void subss(XMMRegister dst, XMMRegister src) { Assembler::subss(dst, src); } | |
| 992 void subss(XMMRegister dst, Address src) { Assembler::subss(dst, src); } | |
| 993 void subss(XMMRegister dst, AddressLiteral src); | |
| 994 | |
| 995 void ucomiss(XMMRegister dst, XMMRegister src) { Assembler::ucomiss(dst, src); } | |
| 996 void ucomiss(XMMRegister dst, Address src) { Assembler::ucomiss(dst, src); } | |
| 997 void ucomiss(XMMRegister dst, AddressLiteral src); | |
| 998 | |
| 999 void ucomisd(XMMRegister dst, XMMRegister src) { Assembler::ucomisd(dst, src); } | |
| 1000 void ucomisd(XMMRegister dst, Address src) { Assembler::ucomisd(dst, src); } | |
| 1001 void ucomisd(XMMRegister dst, AddressLiteral src); | |
| 1002 | |
| 1003 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values | |
| 1004 void xorpd(XMMRegister dst, XMMRegister src) { Assembler::xorpd(dst, src); } | |
| 1005 void xorpd(XMMRegister dst, Address src) { Assembler::xorpd(dst, src); } | |
| 1006 void xorpd(XMMRegister dst, AddressLiteral src); | |
| 1007 | |
| 1008 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values | |
| 1009 void xorps(XMMRegister dst, XMMRegister src) { Assembler::xorps(dst, src); } | |
| 1010 void xorps(XMMRegister dst, Address src) { Assembler::xorps(dst, src); } | |
| 1011 void xorps(XMMRegister dst, AddressLiteral src); | |
| 1012 | |
| 1013 // Shuffle Bytes | |
| 1014 void pshufb(XMMRegister dst, XMMRegister src) { Assembler::pshufb(dst, src); } | |
| 1015 void pshufb(XMMRegister dst, Address src) { Assembler::pshufb(dst, src); } | |
| 1016 void pshufb(XMMRegister dst, AddressLiteral src); | |
| 1017 // AVX 3-operands instructions | |
| 1018 | |
| 1019 void vaddsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddsd(dst, nds, src); } | |
| 1020 void vaddsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vaddsd(dst, nds, src); } | |
| 1021 void vaddsd(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1022 | |
| 1023 void vaddss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddss(dst, nds, src); } | |
| 1024 void vaddss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vaddss(dst, nds, src); } | |
| 1025 void vaddss(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1026 | |
| 1027 void vandpd(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vandpd(dst, nds, src, vector256); } | |
| 1028 void vandpd(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vandpd(dst, nds, src, vector256); } | |
| 1029 void vandpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256); | |
| 1030 | |
| 1031 void vandps(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vandps(dst, nds, src, vector256); } | |
| 1032 void vandps(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vandps(dst, nds, src, vector256); } | |
| 1033 void vandps(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256); | |
| 1034 | |
| 1035 void vdivsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivsd(dst, nds, src); } | |
| 1036 void vdivsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vdivsd(dst, nds, src); } | |
| 1037 void vdivsd(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1038 | |
| 1039 void vdivss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivss(dst, nds, src); } | |
| 1040 void vdivss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vdivss(dst, nds, src); } | |
| 1041 void vdivss(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1042 | |
| 1043 void vmulsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulsd(dst, nds, src); } | |
| 1044 void vmulsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vmulsd(dst, nds, src); } | |
| 1045 void vmulsd(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1046 | |
| 1047 void vmulss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulss(dst, nds, src); } | |
| 1048 void vmulss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vmulss(dst, nds, src); } | |
| 1049 void vmulss(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1050 | |
| 1051 void vsubsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubsd(dst, nds, src); } | |
| 1052 void vsubsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vsubsd(dst, nds, src); } | |
| 1053 void vsubsd(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1054 | |
| 1055 void vsubss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubss(dst, nds, src); } | |
| 1056 void vsubss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vsubss(dst, nds, src); } | |
| 1057 void vsubss(XMMRegister dst, XMMRegister nds, AddressLiteral src); | |
| 1058 | |
| 1059 // AVX Vector instructions | |
| 1060 | |
| 1061 void vxorpd(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vxorpd(dst, nds, src, vector256); } | |
| 1062 void vxorpd(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vxorpd(dst, nds, src, vector256); } | |
| 1063 void vxorpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256); | |
| 1064 | |
| 1065 void vxorps(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vxorps(dst, nds, src, vector256); } | |
| 1066 void vxorps(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vxorps(dst, nds, src, vector256); } | |
| 1067 void vxorps(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256); | |
| 1068 | |
| 1069 void vpxor(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { | |
| 1070 if (UseAVX > 1 || !vector256) // vpxor 256 bit is available only in AVX2 | |
| 1071 Assembler::vpxor(dst, nds, src, vector256); | |
| 1072 else | |
| 1073 Assembler::vxorpd(dst, nds, src, vector256); | |
| 1074 } | |
| 1075 void vpxor(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { | |
| 1076 if (UseAVX > 1 || !vector256) // vpxor 256 bit is available only in AVX2 | |
| 1077 Assembler::vpxor(dst, nds, src, vector256); | |
| 1078 else | |
| 1079 Assembler::vxorpd(dst, nds, src, vector256); | |
| 1080 } | |
| 1081 | |
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1082 // Simple version for AVX2 256bit vectors |
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1083 void vpxor(XMMRegister dst, XMMRegister src) { Assembler::vpxor(dst, dst, src, true); } |
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1084 void vpxor(XMMRegister dst, Address src) { Assembler::vpxor(dst, dst, src, true); } |
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1085 |
| 7199 | 1086 // Move packed integer values from low 128 bit to hign 128 bit in 256 bit vector. |
| 1087 void vinserti128h(XMMRegister dst, XMMRegister nds, XMMRegister src) { | |
| 1088 if (UseAVX > 1) // vinserti128h is available only in AVX2 | |
| 1089 Assembler::vinserti128h(dst, nds, src); | |
| 1090 else | |
| 1091 Assembler::vinsertf128h(dst, nds, src); | |
| 1092 } | |
| 1093 | |
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1094 // Carry-Less Multiplication Quadword |
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1095 void vpclmulldq(XMMRegister dst, XMMRegister nds, XMMRegister src) { |
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1096 // 0x00 - multiply lower 64 bits [0:63] |
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1097 Assembler::vpclmulqdq(dst, nds, src, 0x00); |
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1098 } |
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1099 void vpclmulhdq(XMMRegister dst, XMMRegister nds, XMMRegister src) { |
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1100 // 0x11 - multiply upper 64 bits [64:127] |
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1101 Assembler::vpclmulqdq(dst, nds, src, 0x11); |
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1102 } |
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1103 |
| 7199 | 1104 // Data |
| 1105 | |
| 1106 void cmov32( Condition cc, Register dst, Address src); | |
| 1107 void cmov32( Condition cc, Register dst, Register src); | |
| 1108 | |
| 1109 void cmov( Condition cc, Register dst, Register src) { cmovptr(cc, dst, src); } | |
| 1110 | |
| 1111 void cmovptr(Condition cc, Register dst, Address src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); } | |
| 1112 void cmovptr(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); } | |
| 1113 | |
| 1114 void movoop(Register dst, jobject obj); | |
| 1115 void movoop(Address dst, jobject obj); | |
| 1116 | |
| 1117 void mov_metadata(Register dst, Metadata* obj); | |
| 1118 void mov_metadata(Address dst, Metadata* obj); | |
| 1119 | |
| 1120 void movptr(ArrayAddress dst, Register src); | |
| 1121 // can this do an lea? | |
| 1122 void movptr(Register dst, ArrayAddress src); | |
| 1123 | |
| 1124 void movptr(Register dst, Address src); | |
| 1125 | |
| 17780 | 1126 #ifdef _LP64 |
| 1127 void movptr(Register dst, AddressLiteral src, Register scratch=rscratch1); | |
| 1128 #else | |
| 1129 void movptr(Register dst, AddressLiteral src, Register scratch=noreg); // Scratch reg is ignored in 32-bit | |
| 1130 #endif | |
| 7199 | 1131 |
| 1132 void movptr(Register dst, intptr_t src); | |
| 1133 void movptr(Register dst, Register src); | |
| 1134 void movptr(Address dst, intptr_t src); | |
| 1135 | |
| 1136 void movptr(Address dst, Register src); | |
| 1137 | |
| 1138 void movptr(Register dst, RegisterOrConstant src) { | |
| 1139 if (src.is_constant()) movptr(dst, src.as_constant()); | |
| 1140 else movptr(dst, src.as_register()); | |
| 1141 } | |
| 1142 | |
| 1143 #ifdef _LP64 | |
| 1144 // Generally the next two are only used for moving NULL | |
| 1145 // Although there are situations in initializing the mark word where | |
| 1146 // they could be used. They are dangerous. | |
| 1147 | |
| 1148 // They only exist on LP64 so that int32_t and intptr_t are not the same | |
| 1149 // and we have ambiguous declarations. | |
| 1150 | |
| 1151 void movptr(Address dst, int32_t imm32); | |
| 1152 void movptr(Register dst, int32_t imm32); | |
| 1153 #endif // _LP64 | |
| 1154 | |
| 1155 // to avoid hiding movl | |
| 1156 void mov32(AddressLiteral dst, Register src); | |
| 1157 void mov32(Register dst, AddressLiteral src); | |
| 1158 | |
| 1159 // to avoid hiding movb | |
| 1160 void movbyte(ArrayAddress dst, int src); | |
| 1161 | |
| 1162 // Import other mov() methods from the parent class or else | |
| 1163 // they will be hidden by the following overriding declaration. | |
| 1164 using Assembler::movdl; | |
| 1165 using Assembler::movq; | |
| 1166 void movdl(XMMRegister dst, AddressLiteral src); | |
| 1167 void movq(XMMRegister dst, AddressLiteral src); | |
| 1168 | |
| 1169 // Can push value or effective address | |
| 1170 void pushptr(AddressLiteral src); | |
| 1171 | |
| 1172 void pushptr(Address src) { LP64_ONLY(pushq(src)) NOT_LP64(pushl(src)); } | |
| 1173 void popptr(Address src) { LP64_ONLY(popq(src)) NOT_LP64(popl(src)); } | |
| 1174 | |
| 1175 void pushoop(jobject obj); | |
| 1176 void pushklass(Metadata* obj); | |
| 1177 | |
| 1178 // sign extend as need a l to ptr sized element | |
| 1179 void movl2ptr(Register dst, Address src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(movl(dst, src)); } | |
| 1180 void movl2ptr(Register dst, Register src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(if (dst != src) movl(dst, src)); } | |
| 1181 | |
| 1182 // C2 compiled method's prolog code. | |
|
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1183 void verified_entry(int framesize, int stack_bang_size, bool fp_mode_24b); |
| 7199 | 1184 |
|
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1185 // clear memory of size 'cnt' qwords, starting at 'base'. |
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1186 void clear_mem(Register base, Register cnt, Register rtmp); |
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1187 |
| 7199 | 1188 // IndexOf strings. |
| 1189 // Small strings are loaded through stack if they cross page boundary. | |
| 1190 void string_indexof(Register str1, Register str2, | |
| 1191 Register cnt1, Register cnt2, | |
| 1192 int int_cnt2, Register result, | |
| 1193 XMMRegister vec, Register tmp); | |
| 1194 | |
| 1195 // IndexOf for constant substrings with size >= 8 elements | |
| 1196 // which don't need to be loaded through stack. | |
| 1197 void string_indexofC8(Register str1, Register str2, | |
| 1198 Register cnt1, Register cnt2, | |
| 1199 int int_cnt2, Register result, | |
| 1200 XMMRegister vec, Register tmp); | |
| 1201 | |
| 1202 // Smallest code: we don't need to load through stack, | |
| 1203 // check string tail. | |
| 1204 | |
| 1205 // Compare strings. | |
| 1206 void string_compare(Register str1, Register str2, | |
| 1207 Register cnt1, Register cnt2, Register result, | |
| 1208 XMMRegister vec1); | |
| 1209 | |
| 1210 // Compare char[] arrays. | |
| 1211 void char_arrays_equals(bool is_array_equ, Register ary1, Register ary2, | |
| 1212 Register limit, Register result, Register chr, | |
| 1213 XMMRegister vec1, XMMRegister vec2); | |
| 1214 | |
| 1215 // Fill primitive arrays | |
| 1216 void generate_fill(BasicType t, bool aligned, | |
| 1217 Register to, Register value, Register count, | |
| 1218 Register rtmp, XMMRegister xtmp); | |
| 1219 | |
|
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1220 void encode_iso_array(Register src, Register dst, Register len, |
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1221 XMMRegister tmp1, XMMRegister tmp2, XMMRegister tmp3, |
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1222 XMMRegister tmp4, Register tmp5, Register result); |
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1223 |
|
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1224 #ifdef _LP64 |
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1225 void add2_with_carry(Register dest_hi, Register dest_lo, Register src1, Register src2); |
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1226 void multiply_64_x_64_loop(Register x, Register xstart, Register x_xstart, |
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1227 Register y, Register y_idx, Register z, |
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1228 Register carry, Register product, |
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1229 Register idx, Register kdx); |
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1230 void multiply_add_128_x_128(Register x_xstart, Register y, Register z, |
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1231 Register yz_idx, Register idx, |
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1232 Register carry, Register product, int offset); |
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1233 void multiply_128_x_128_bmi2_loop(Register y, Register z, |
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1234 Register carry, Register carry2, |
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1235 Register idx, Register jdx, |
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1236 Register yz_idx1, Register yz_idx2, |
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1237 Register tmp, Register tmp3, Register tmp4); |
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1238 void multiply_128_x_128_loop(Register x_xstart, Register y, Register z, |
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1239 Register yz_idx, Register idx, Register jdx, |
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1240 Register carry, Register product, |
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1241 Register carry2); |
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1242 void multiply_to_len(Register x, Register xlen, Register y, Register ylen, Register z, Register zlen, |
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1243 Register tmp1, Register tmp2, Register tmp3, Register tmp4, Register tmp5); |
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1244 #endif |
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1245 |
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1246 // CRC32 code for java.util.zip.CRC32::updateBytes() instrinsic. |
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1247 void update_byte_crc32(Register crc, Register val, Register table); |
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1248 void kernel_crc32(Register crc, Register buf, Register len, Register table, Register tmp); |
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1249 // Fold 128-bit data chunk |
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1250 void fold_128bit_crc32(XMMRegister xcrc, XMMRegister xK, XMMRegister xtmp, Register buf, int offset); |
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1251 void fold_128bit_crc32(XMMRegister xcrc, XMMRegister xK, XMMRegister xtmp, XMMRegister xbuf); |
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1252 // Fold 8-bit data |
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1253 void fold_8bit_crc32(Register crc, Register table, Register tmp); |
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1254 void fold_8bit_crc32(XMMRegister crc, Register table, XMMRegister xtmp, Register tmp); |
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1255 |
| 7199 | 1256 #undef VIRTUAL |
| 1257 | |
| 1258 }; | |
| 1259 | |
| 1260 /** | |
| 1261 * class SkipIfEqual: | |
| 1262 * | |
| 1263 * Instantiating this class will result in assembly code being output that will | |
| 1264 * jump around any code emitted between the creation of the instance and it's | |
| 1265 * automatic destruction at the end of a scope block, depending on the value of | |
| 1266 * the flag passed to the constructor, which will be checked at run-time. | |
| 1267 */ | |
| 1268 class SkipIfEqual { | |
| 1269 private: | |
| 1270 MacroAssembler* _masm; | |
| 1271 Label _label; | |
| 1272 | |
| 1273 public: | |
| 1274 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value); | |
| 1275 ~SkipIfEqual(); | |
| 1276 }; | |
| 1277 | |
| 1278 #endif // CPU_X86_VM_MACROASSEMBLER_X86_HPP |