1 /*
   2  * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
   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_MACROASSEMBLER_X86_HPP
  26 #define CPU_X86_MACROASSEMBLER_X86_HPP
  27 
  28 #include "asm/assembler.hpp"
  29 #include "utilities/macros.hpp"
  30 #include "runtime/rtmLocking.hpp"
  31 
  32 // MacroAssembler extends Assembler by frequently used macros.
  33 //
  34 // Instructions for which a 'better' code sequence exists depending
  35 // on arguments should also go in here.
  36 
  37 class MacroAssembler: public Assembler {
  38   friend class LIR_Assembler;
  39   friend class Runtime1;      // as_Address()
  40 
  41  public:
  42   // Support for VM calls
  43   //
  44   // This is the base routine called by the different versions of call_VM_leaf. The interpreter
  45   // may customize this version by overriding it for its purposes (e.g., to save/restore
  46   // additional registers when doing a VM call).
  47 
  48   virtual void call_VM_leaf_base(
  49     address entry_point,               // the entry point
  50     int     number_of_arguments        // the number of arguments to pop after the call
  51   );
  52 
  53  protected:
  54   // This is the base routine called by the different versions of call_VM. The interpreter
  55   // may customize this version by overriding it for its purposes (e.g., to save/restore
  56   // additional registers when doing a VM call).
  57   //
  58   // If no java_thread register is specified (noreg) than rdi will be used instead. call_VM_base
  59   // returns the register which contains the thread upon return. If a thread register has been
  60   // specified, the return value will correspond to that register. If no last_java_sp is specified
  61   // (noreg) than rsp will be used instead.
  62   virtual void call_VM_base(           // returns the register containing the thread upon return
  63     Register oop_result,               // where an oop-result ends up if any; use noreg otherwise
  64     Register java_thread,              // the thread if computed before     ; use noreg otherwise
  65     Register last_java_sp,             // to set up last_Java_frame in stubs; use noreg otherwise
  66     address  entry_point,              // the entry point
  67     int      number_of_arguments,      // the number of arguments (w/o thread) to pop after the call
  68     bool     check_exceptions          // whether to check for pending exceptions after return
  69   );
  70 
  71   void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true);
  72 
  73   // helpers for FPU flag access
  74   // tmp is a temporary register, if none is available use noreg
  75   void save_rax   (Register tmp);
  76   void restore_rax(Register tmp);
  77 
  78  public:
  79   MacroAssembler(CodeBuffer* code) : Assembler(code) {}
  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   Address as_Address(AddressLiteral adr);
  88   Address as_Address(ArrayAddress adr);
  89 
  90   // Support for NULL-checks
  91   //
  92   // Generates code that causes a NULL OS exception if the content of reg is NULL.
  93   // If the accessed location is M[reg + offset] and the offset is known, provide the
  94   // offset. No explicit code generation is needed if the offset is within a certain
  95   // range (0 <= offset <= page_size).
  96 
  97   void null_check(Register reg, int offset = -1);
  98   static bool needs_explicit_null_check(intptr_t offset);
  99   static bool uses_implicit_null_check(void* address);
 100 
 101   // Required platform-specific helpers for Label::patch_instructions.
 102   // They _shadow_ the declarations in AbstractAssembler, which are undefined.
 103   void pd_patch_instruction(address branch, address target, const char* file, int line) {
 104     unsigned char op = branch[0];
 105     assert(op == 0xE8 /* call */ ||
 106         op == 0xE9 /* jmp */ ||
 107         op == 0xEB /* short jmp */ ||
 108         (op & 0xF0) == 0x70 /* short jcc */ ||
 109         op == 0x0F && (branch[1] & 0xF0) == 0x80 /* jcc */ ||
 110         op == 0xC7 && branch[1] == 0xF8 /* xbegin */,
 111         "Invalid opcode at patch point");
 112 
 113     if (op == 0xEB || (op & 0xF0) == 0x70) {
 114       // short offset operators (jmp and jcc)
 115       char* disp = (char*) &branch[1];
 116       int imm8 = target - (address) &disp[1];
 117       guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset at %s:%d",
 118                 file == NULL ? "<NULL>" : file, line);
 119       *disp = imm8;
 120     } else {
 121       int* disp = (int*) &branch[(op == 0x0F || op == 0xC7)? 2: 1];
 122       int imm32 = target - (address) &disp[1];
 123       *disp = imm32;
 124     }
 125   }
 126 
 127   // The following 4 methods return the offset of the appropriate move instruction
 128 
 129   // Support for fast byte/short loading with zero extension (depending on particular CPU)
 130   int load_unsigned_byte(Register dst, Address src);
 131   int load_unsigned_short(Register dst, Address src);
 132 
 133   // Support for fast byte/short loading with sign extension (depending on particular CPU)
 134   int load_signed_byte(Register dst, Address src);
 135   int load_signed_short(Register dst, Address src);
 136 
 137   // Support for sign-extension (hi:lo = extend_sign(lo))
 138   void extend_sign(Register hi, Register lo);
 139 
 140   // Load and store values by size and signed-ness
 141   void load_sized_value(Register dst, Address src, size_t size_in_bytes, bool is_signed, Register dst2 = noreg);
 142   void store_sized_value(Address dst, Register src, size_t size_in_bytes, Register src2 = noreg);
 143 
 144   // Support for inc/dec with optimal instruction selection depending on value
 145 
 146   void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; }
 147   void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; }
 148 
 149   void decrementl(Address dst, int value = 1);
 150   void decrementl(Register reg, int value = 1);
 151 
 152   void decrementq(Register reg, int value = 1);
 153   void decrementq(Address dst, int value = 1);
 154 
 155   void incrementl(Address dst, int value = 1);
 156   void incrementl(Register reg, int value = 1);
 157 
 158   void incrementq(Register reg, int value = 1);
 159   void incrementq(Address dst, int value = 1);
 160 
 161 #ifdef COMPILER2
 162   // special instructions for EVEX
 163   void setvectmask(Register dst, Register src);
 164   void restorevectmask();
 165 #endif
 166 
 167   // Support optimal SSE move instructions.
 168   void movflt(XMMRegister dst, XMMRegister src) {
 169     if (dst-> encoding() == src->encoding()) return;
 170     if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; }
 171     else                       { movss (dst, src); return; }
 172   }
 173   void movflt(XMMRegister dst, Address src) { movss(dst, src); }
 174   void movflt(XMMRegister dst, AddressLiteral src);
 175   void movflt(Address dst, XMMRegister src) { movss(dst, src); }
 176 
 177   void movdbl(XMMRegister dst, XMMRegister src) {
 178     if (dst-> encoding() == src->encoding()) return;
 179     if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; }
 180     else                       { movsd (dst, src); return; }
 181   }
 182 
 183   void movdbl(XMMRegister dst, AddressLiteral src);
 184 
 185   void movdbl(XMMRegister dst, Address src) {
 186     if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; }
 187     else                         { movlpd(dst, src); return; }
 188   }
 189   void movdbl(Address dst, XMMRegister src) { movsd(dst, src); }
 190 
 191   void incrementl(AddressLiteral dst);
 192   void incrementl(ArrayAddress dst);
 193 
 194   void incrementq(AddressLiteral dst);
 195 
 196   // Alignment
 197   void align(int modulus);
 198   void align(int modulus, int target);
 199 
 200   // A 5 byte nop that is safe for patching (see patch_verified_entry)
 201   void fat_nop();
 202 
 203   // Stack frame creation/removal
 204   void enter();
 205   void leave();
 206 
 207   // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information)
 208   // The pointer will be loaded into the thread register.
 209   void get_thread(Register thread);
 210 
 211 
 212   // Support for VM calls
 213   //
 214   // It is imperative that all calls into the VM are handled via the call_VM macros.
 215   // They make sure that the stack linkage is setup correctly. call_VM's correspond
 216   // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points.
 217 
 218 
 219   void call_VM(Register oop_result,
 220                address entry_point,
 221                bool check_exceptions = true);
 222   void call_VM(Register oop_result,
 223                address entry_point,
 224                Register arg_1,
 225                bool check_exceptions = true);
 226   void call_VM(Register oop_result,
 227                address entry_point,
 228                Register arg_1, Register arg_2,
 229                bool check_exceptions = true);
 230   void call_VM(Register oop_result,
 231                address entry_point,
 232                Register arg_1, Register arg_2, Register arg_3,
 233                bool check_exceptions = true);
 234 
 235   // Overloadings with last_Java_sp
 236   void call_VM(Register oop_result,
 237                Register last_java_sp,
 238                address entry_point,
 239                int number_of_arguments = 0,
 240                bool check_exceptions = true);
 241   void call_VM(Register oop_result,
 242                Register last_java_sp,
 243                address entry_point,
 244                Register arg_1, bool
 245                check_exceptions = true);
 246   void call_VM(Register oop_result,
 247                Register last_java_sp,
 248                address entry_point,
 249                Register arg_1, Register arg_2,
 250                bool check_exceptions = true);
 251   void call_VM(Register oop_result,
 252                Register last_java_sp,
 253                address entry_point,
 254                Register arg_1, Register arg_2, Register arg_3,
 255                bool check_exceptions = true);
 256 
 257   void get_vm_result  (Register oop_result, Register thread);
 258   void get_vm_result_2(Register metadata_result, Register thread);
 259 
 260   // These always tightly bind to MacroAssembler::call_VM_base
 261   // bypassing the virtual implementation
 262   void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, int number_of_arguments = 0, bool check_exceptions = true);
 263   void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true);
 264   void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true);
 265   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);
 266   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);
 267 
 268   void call_VM_leaf0(address entry_point);
 269   void call_VM_leaf(address entry_point,
 270                     int number_of_arguments = 0);
 271   void call_VM_leaf(address entry_point,
 272                     Register arg_1);
 273   void call_VM_leaf(address entry_point,
 274                     Register arg_1, Register arg_2);
 275   void call_VM_leaf(address entry_point,
 276                     Register arg_1, Register arg_2, Register arg_3);
 277 
 278   // These always tightly bind to MacroAssembler::call_VM_leaf_base
 279   // bypassing the virtual implementation
 280   void super_call_VM_leaf(address entry_point);
 281   void super_call_VM_leaf(address entry_point, Register arg_1);
 282   void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
 283   void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
 284   void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3, Register arg_4);
 285 
 286   // last Java Frame (fills frame anchor)
 287   void set_last_Java_frame(Register thread,
 288                            Register last_java_sp,
 289                            Register last_java_fp,
 290                            address last_java_pc);
 291 
 292   // thread in the default location (r15_thread on 64bit)
 293   void set_last_Java_frame(Register last_java_sp,
 294                            Register last_java_fp,
 295                            address last_java_pc);
 296 
 297   void reset_last_Java_frame(Register thread, bool clear_fp);
 298 
 299   // thread in the default location (r15_thread on 64bit)
 300   void reset_last_Java_frame(bool clear_fp);
 301 
 302   // jobjects
 303   void clear_jweak_tag(Register possibly_jweak);
 304   void resolve_jobject(Register value, Register thread, Register tmp);
 305 
 306   // C 'boolean' to Java boolean: x == 0 ? 0 : 1
 307   void c2bool(Register x);
 308 
 309   // C++ bool manipulation
 310 
 311   void movbool(Register dst, Address src);
 312   void movbool(Address dst, bool boolconst);
 313   void movbool(Address dst, Register src);
 314   void testbool(Register dst);
 315 
 316   void resolve_oop_handle(Register result, Register tmp = rscratch2);
 317   void resolve_weak_handle(Register result, Register tmp);
 318   void load_mirror(Register mirror, Register method, Register tmp = rscratch2);
 319   void load_method_holder_cld(Register rresult, Register rmethod);
 320 
 321   void load_method_holder(Register holder, Register method);
 322 
 323   // oop manipulations
 324   void load_klass(Register dst, Register src);
 325   void store_klass(Register dst, Register src);
 326 
 327   void access_load_at(BasicType type, DecoratorSet decorators, Register dst, Address src,
 328                       Register tmp1, Register thread_tmp);
 329   void access_store_at(BasicType type, DecoratorSet decorators, Address dst, Register src,
 330                        Register tmp1, Register tmp2);
 331 
 332   // Resolves obj access. Result is placed in the same register.
 333   // All other registers are preserved.
 334   void resolve(DecoratorSet decorators, Register obj);
 335 
 336   void load_heap_oop(Register dst, Address src, Register tmp1 = noreg,
 337                      Register thread_tmp = noreg, DecoratorSet decorators = 0);
 338   void load_heap_oop_not_null(Register dst, Address src, Register tmp1 = noreg,
 339                               Register thread_tmp = noreg, DecoratorSet decorators = 0);
 340   void store_heap_oop(Address dst, Register src, Register tmp1 = noreg,
 341                       Register tmp2 = noreg, DecoratorSet decorators = 0);
 342 
 343   // Used for storing NULL. All other oop constants should be
 344   // stored using routines that take a jobject.
 345   void store_heap_oop_null(Address dst);
 346 
 347   void load_prototype_header(Register dst, Register src);
 348 
 349 #ifdef _LP64
 350   void store_klass_gap(Register dst, Register src);
 351 
 352   // This dummy is to prevent a call to store_heap_oop from
 353   // converting a zero (like NULL) into a Register by giving
 354   // the compiler two choices it can't resolve
 355 
 356   void store_heap_oop(Address dst, void* dummy);
 357 
 358   void encode_heap_oop(Register r);
 359   void decode_heap_oop(Register r);
 360   void encode_heap_oop_not_null(Register r);
 361   void decode_heap_oop_not_null(Register r);
 362   void encode_heap_oop_not_null(Register dst, Register src);
 363   void decode_heap_oop_not_null(Register dst, Register src);
 364 
 365   void set_narrow_oop(Register dst, jobject obj);
 366   void set_narrow_oop(Address dst, jobject obj);
 367   void cmp_narrow_oop(Register dst, jobject obj);
 368   void cmp_narrow_oop(Address dst, jobject obj);
 369 
 370   void encode_klass_not_null(Register r);
 371   void decode_klass_not_null(Register r);
 372   void encode_klass_not_null(Register dst, Register src);
 373   void decode_klass_not_null(Register dst, Register src);
 374   void set_narrow_klass(Register dst, Klass* k);
 375   void set_narrow_klass(Address dst, Klass* k);
 376   void cmp_narrow_klass(Register dst, Klass* k);
 377   void cmp_narrow_klass(Address dst, Klass* k);
 378 
 379   // Returns the byte size of the instructions generated by decode_klass_not_null()
 380   // when compressed klass pointers are being used.
 381   static int instr_size_for_decode_klass_not_null();
 382 
 383   // if heap base register is used - reinit it with the correct value
 384   void reinit_heapbase();
 385 
 386   DEBUG_ONLY(void verify_heapbase(const char* msg);)
 387 
 388 #endif // _LP64
 389 
 390   // Int division/remainder for Java
 391   // (as idivl, but checks for special case as described in JVM spec.)
 392   // returns idivl instruction offset for implicit exception handling
 393   int corrected_idivl(Register reg);
 394 
 395   // Long division/remainder for Java
 396   // (as idivq, but checks for special case as described in JVM spec.)
 397   // returns idivq instruction offset for implicit exception handling
 398   int corrected_idivq(Register reg);
 399 
 400   void int3();
 401 
 402   // Long operation macros for a 32bit cpu
 403   // Long negation for Java
 404   void lneg(Register hi, Register lo);
 405 
 406   // Long multiplication for Java
 407   // (destroys contents of eax, ebx, ecx and edx)
 408   void lmul(int x_rsp_offset, int y_rsp_offset); // rdx:rax = x * y
 409 
 410   // Long shifts for Java
 411   // (semantics as described in JVM spec.)
 412   void lshl(Register hi, Register lo);                               // hi:lo << (rcx & 0x3f)
 413   void lshr(Register hi, Register lo, bool sign_extension = false);  // hi:lo >> (rcx & 0x3f)
 414 
 415   // Long compare for Java
 416   // (semantics as described in JVM spec.)
 417   void lcmp2int(Register x_hi, Register x_lo, Register y_hi, Register y_lo); // x_hi = lcmp(x, y)
 418 
 419 
 420   // misc
 421 
 422   // Sign extension
 423   void sign_extend_short(Register reg);
 424   void sign_extend_byte(Register reg);
 425 
 426   // Division by power of 2, rounding towards 0
 427   void division_with_shift(Register reg, int shift_value);
 428 
 429   // Compares the top-most stack entries on the FPU stack and sets the eflags as follows:
 430   //
 431   // CF (corresponds to C0) if x < y
 432   // PF (corresponds to C2) if unordered
 433   // ZF (corresponds to C3) if x = y
 434   //
 435   // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
 436   // tmp is a temporary register, if none is available use noreg (only matters for non-P6 code)
 437   void fcmp(Register tmp);
 438   // Variant of the above which allows y to be further down the stack
 439   // and which only pops x and y if specified. If pop_right is
 440   // specified then pop_left must also be specified.
 441   void fcmp(Register tmp, int index, bool pop_left, bool pop_right);
 442 
 443   // Floating-point comparison for Java
 444   // Compares the top-most stack entries on the FPU stack and stores the result in dst.
 445   // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
 446   // (semantics as described in JVM spec.)
 447   void fcmp2int(Register dst, bool unordered_is_less);
 448   // Variant of the above which allows y to be further down the stack
 449   // and which only pops x and y if specified. If pop_right is
 450   // specified then pop_left must also be specified.
 451   void fcmp2int(Register dst, bool unordered_is_less, int index, bool pop_left, bool pop_right);
 452 
 453   // Floating-point remainder for Java (ST0 = ST0 fremr ST1, ST1 is empty afterwards)
 454   // tmp is a temporary register, if none is available use noreg
 455   void fremr(Register tmp);
 456 
 457   // dst = c = a * b + c
 458   void fmad(XMMRegister dst, XMMRegister a, XMMRegister b, XMMRegister c);
 459   void fmaf(XMMRegister dst, XMMRegister a, XMMRegister b, XMMRegister c);
 460 
 461   void vfmad(XMMRegister dst, XMMRegister a, XMMRegister b, XMMRegister c, int vector_len);
 462   void vfmaf(XMMRegister dst, XMMRegister a, XMMRegister b, XMMRegister c, int vector_len);
 463   void vfmad(XMMRegister dst, XMMRegister a, Address b, XMMRegister c, int vector_len);
 464   void vfmaf(XMMRegister dst, XMMRegister a, Address b, XMMRegister c, int vector_len);
 465 
 466 
 467   // same as fcmp2int, but using SSE2
 468   void cmpss2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
 469   void cmpsd2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
 470 
 471   // branch to L if FPU flag C2 is set/not set
 472   // tmp is a temporary register, if none is available use noreg
 473   void jC2 (Register tmp, Label& L);
 474   void jnC2(Register tmp, Label& L);
 475 
 476   // Pop ST (ffree & fincstp combined)
 477   void fpop();
 478 
 479   // Load float value from 'address'. If UseSSE >= 1, the value is loaded into
 480   // register xmm0. Otherwise, the value is loaded onto the FPU stack.
 481   void load_float(Address src);
 482 
 483   // Store float value to 'address'. If UseSSE >= 1, the value is stored
 484   // from register xmm0. Otherwise, the value is stored from the FPU stack.
 485   void store_float(Address dst);
 486 
 487   // Load double value from 'address'. If UseSSE >= 2, the value is loaded into
 488   // register xmm0. Otherwise, the value is loaded onto the FPU stack.
 489   void load_double(Address src);
 490 
 491   // Store double value to 'address'. If UseSSE >= 2, the value is stored
 492   // from register xmm0. Otherwise, the value is stored from the FPU stack.
 493   void store_double(Address dst);
 494 
 495   // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack
 496   void push_fTOS();
 497 
 498   // pops double TOS element from CPU stack and pushes on FPU stack
 499   void pop_fTOS();
 500 
 501   void empty_FPU_stack();
 502 
 503   void push_IU_state();
 504   void pop_IU_state();
 505 
 506   void push_FPU_state();
 507   void pop_FPU_state();
 508 
 509   void push_CPU_state();
 510   void pop_CPU_state();
 511 
 512   // Round up to a power of two
 513   void round_to(Register reg, int modulus);
 514 
 515   // Callee saved registers handling
 516   void push_callee_saved_registers();
 517   void pop_callee_saved_registers();
 518 
 519   // allocation
 520   void eden_allocate(
 521     Register thread,                   // Current thread
 522     Register obj,                      // result: pointer to object after successful allocation
 523     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
 524     int      con_size_in_bytes,        // object size in bytes if   known at compile time
 525     Register t1,                       // temp register
 526     Label&   slow_case                 // continuation point if fast allocation fails
 527   );
 528   void tlab_allocate(
 529     Register thread,                   // Current thread
 530     Register obj,                      // result: pointer to object after successful allocation
 531     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
 532     int      con_size_in_bytes,        // object size in bytes if   known at compile time
 533     Register t1,                       // temp register
 534     Register t2,                       // temp register
 535     Label&   slow_case                 // continuation point if fast allocation fails
 536   );
 537   void zero_memory(Register address, Register length_in_bytes, int offset_in_bytes, Register temp);
 538 
 539   // interface method calling
 540   void lookup_interface_method(Register recv_klass,
 541                                Register intf_klass,
 542                                RegisterOrConstant itable_index,
 543                                Register method_result,
 544                                Register scan_temp,
 545                                Label& no_such_interface,
 546                                bool return_method = true);
 547 
 548   // virtual method calling
 549   void lookup_virtual_method(Register recv_klass,
 550                              RegisterOrConstant vtable_index,
 551                              Register method_result);
 552 
 553   // Test sub_klass against super_klass, with fast and slow paths.
 554 
 555   // The fast path produces a tri-state answer: yes / no / maybe-slow.
 556   // One of the three labels can be NULL, meaning take the fall-through.
 557   // If super_check_offset is -1, the value is loaded up from super_klass.
 558   // No registers are killed, except temp_reg.
 559   void check_klass_subtype_fast_path(Register sub_klass,
 560                                      Register super_klass,
 561                                      Register temp_reg,
 562                                      Label* L_success,
 563                                      Label* L_failure,
 564                                      Label* L_slow_path,
 565                 RegisterOrConstant super_check_offset = RegisterOrConstant(-1));
 566 
 567   // The rest of the type check; must be wired to a corresponding fast path.
 568   // It does not repeat the fast path logic, so don't use it standalone.
 569   // The temp_reg and temp2_reg can be noreg, if no temps are available.
 570   // Updates the sub's secondary super cache as necessary.
 571   // If set_cond_codes, condition codes will be Z on success, NZ on failure.
 572   void check_klass_subtype_slow_path(Register sub_klass,
 573                                      Register super_klass,
 574                                      Register temp_reg,
 575                                      Register temp2_reg,
 576                                      Label* L_success,
 577                                      Label* L_failure,
 578                                      bool set_cond_codes = false);
 579 
 580   // Simplified, combined version, good for typical uses.
 581   // Falls through on failure.
 582   void check_klass_subtype(Register sub_klass,
 583                            Register super_klass,
 584                            Register temp_reg,
 585                            Label& L_success);
 586 
 587   void clinit_barrier(Register klass,
 588                       Register thread,
 589                       Label* L_fast_path = NULL,
 590                       Label* L_slow_path = NULL);
 591 
 592   // method handles (JSR 292)
 593   Address argument_address(RegisterOrConstant arg_slot, int extra_slot_offset = 0);
 594 
 595   //----
 596   void set_word_if_not_zero(Register reg); // sets reg to 1 if not zero, otherwise 0
 597 
 598   // Debugging
 599 
 600   // only if +VerifyOops
 601   // TODO: Make these macros with file and line like sparc version!
 602   void verify_oop(Register reg, const char* s = "broken oop");
 603   void verify_oop_addr(Address addr, const char * s = "broken oop addr");
 604 
 605   // TODO: verify method and klass metadata (compare against vptr?)
 606   void _verify_method_ptr(Register reg, const char * msg, const char * file, int line) {}
 607   void _verify_klass_ptr(Register reg, const char * msg, const char * file, int line){}
 608 
 609 #define verify_method_ptr(reg) _verify_method_ptr(reg, "broken method " #reg, __FILE__, __LINE__)
 610 #define verify_klass_ptr(reg) _verify_klass_ptr(reg, "broken klass " #reg, __FILE__, __LINE__)
 611 
 612   // only if +VerifyFPU
 613   void verify_FPU(int stack_depth, const char* s = "illegal FPU state");
 614 
 615   // Verify or restore cpu control state after JNI call
 616   void restore_cpu_control_state_after_jni();
 617 
 618   // prints msg, dumps registers and stops execution
 619   void stop(const char* msg);
 620 
 621   // prints msg and continues
 622   void warn(const char* msg);
 623 
 624   // dumps registers and other state
 625   void print_state();
 626 
 627   static void debug32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip, char* msg);
 628   static void debug64(char* msg, int64_t pc, int64_t regs[]);
 629   static void print_state32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip);
 630   static void print_state64(int64_t pc, int64_t regs[]);
 631 
 632   void os_breakpoint();
 633 
 634   void untested()                                { stop("untested"); }
 635 
 636   void unimplemented(const char* what = "");
 637 
 638   void should_not_reach_here()                   { stop("should not reach here"); }
 639 
 640   void print_CPU_state();
 641 
 642   // Stack overflow checking
 643   void bang_stack_with_offset(int offset) {
 644     // stack grows down, caller passes positive offset
 645     assert(offset > 0, "must bang with negative offset");
 646     movl(Address(rsp, (-offset)), rax);
 647   }
 648 
 649   // Writes to stack successive pages until offset reached to check for
 650   // stack overflow + shadow pages.  Also, clobbers tmp
 651   void bang_stack_size(Register size, Register tmp);
 652 
 653   // Check for reserved stack access in method being exited (for JIT)
 654   void reserved_stack_check();
 655 
 656   virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
 657                                                 Register tmp,
 658                                                 int offset);
 659 
 660   // If thread_reg is != noreg the code assumes the register passed contains
 661   // the thread (required on 64 bit).
 662   void safepoint_poll(Label& slow_path, Register thread_reg, Register temp_reg);
 663 
 664   void verify_tlab();
 665 
 666   // Biased locking support
 667   // lock_reg and obj_reg must be loaded up with the appropriate values.
 668   // swap_reg must be rax, and is killed.
 669   // tmp_reg is optional. If it is supplied (i.e., != noreg) it will
 670   // be killed; if not supplied, push/pop will be used internally to
 671   // allocate a temporary (inefficient, avoid if possible).
 672   // Optional slow case is for implementations (interpreter and C1) which branch to
 673   // slow case directly. Leaves condition codes set for C2's Fast_Lock node.
 674   // Returns offset of first potentially-faulting instruction for null
 675   // check info (currently consumed only by C1). If
 676   // swap_reg_contains_mark is true then returns -1 as it is assumed
 677   // the calling code has already passed any potential faults.
 678   int biased_locking_enter(Register lock_reg, Register obj_reg,
 679                            Register swap_reg, Register tmp_reg,
 680                            bool swap_reg_contains_mark,
 681                            Label& done, Label* slow_case = NULL,
 682                            BiasedLockingCounters* counters = NULL);
 683   void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done);
 684 #ifdef COMPILER2
 685   // Code used by cmpFastLock and cmpFastUnlock mach instructions in .ad file.
 686   // See full desription in macroAssembler_x86.cpp.
 687   void fast_lock(Register obj, Register box, Register tmp,
 688                  Register scr, Register cx1, Register cx2,
 689                  BiasedLockingCounters* counters,
 690                  RTMLockingCounters* rtm_counters,
 691                  RTMLockingCounters* stack_rtm_counters,
 692                  Metadata* method_data,
 693                  bool use_rtm, bool profile_rtm);
 694   void fast_unlock(Register obj, Register box, Register tmp, bool use_rtm);
 695 #if INCLUDE_RTM_OPT
 696   void rtm_counters_update(Register abort_status, Register rtm_counters);
 697   void branch_on_random_using_rdtsc(Register tmp, Register scr, int count, Label& brLabel);
 698   void rtm_abort_ratio_calculation(Register tmp, Register rtm_counters_reg,
 699                                    RTMLockingCounters* rtm_counters,
 700                                    Metadata* method_data);
 701   void rtm_profiling(Register abort_status_Reg, Register rtm_counters_Reg,
 702                      RTMLockingCounters* rtm_counters, Metadata* method_data, bool profile_rtm);
 703   void rtm_retry_lock_on_abort(Register retry_count, Register abort_status, Label& retryLabel);
 704   void rtm_retry_lock_on_busy(Register retry_count, Register box, Register tmp, Register scr, Label& retryLabel);
 705   void rtm_stack_locking(Register obj, Register tmp, Register scr,
 706                          Register retry_on_abort_count,
 707                          RTMLockingCounters* stack_rtm_counters,
 708                          Metadata* method_data, bool profile_rtm,
 709                          Label& DONE_LABEL, Label& IsInflated);
 710   void rtm_inflated_locking(Register obj, Register box, Register tmp,
 711                             Register scr, Register retry_on_busy_count,
 712                             Register retry_on_abort_count,
 713                             RTMLockingCounters* rtm_counters,
 714                             Metadata* method_data, bool profile_rtm,
 715                             Label& DONE_LABEL);
 716 #endif
 717 #endif
 718 
 719   Condition negate_condition(Condition cond);
 720 
 721   // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit
 722   // operands. In general the names are modified to avoid hiding the instruction in Assembler
 723   // so that we don't need to implement all the varieties in the Assembler with trivial wrappers
 724   // here in MacroAssembler. The major exception to this rule is call
 725 
 726   // Arithmetics
 727 
 728 
 729   void addptr(Address dst, int32_t src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)) ; }
 730   void addptr(Address dst, Register src);
 731 
 732   void addptr(Register dst, Address src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)); }
 733   void addptr(Register dst, int32_t src);
 734   void addptr(Register dst, Register src);
 735   void addptr(Register dst, RegisterOrConstant src) {
 736     if (src.is_constant()) addptr(dst, (int) src.as_constant());
 737     else                   addptr(dst,       src.as_register());
 738   }
 739 
 740   void andptr(Register dst, int32_t src);
 741   void andptr(Register src1, Register src2) { LP64_ONLY(andq(src1, src2)) NOT_LP64(andl(src1, src2)) ; }
 742 
 743   void cmp8(AddressLiteral src1, int imm);
 744 
 745   // renamed to drag out the casting of address to int32_t/intptr_t
 746   void cmp32(Register src1, int32_t imm);
 747 
 748   void cmp32(AddressLiteral src1, int32_t imm);
 749   // compare reg - mem, or reg - &mem
 750   void cmp32(Register src1, AddressLiteral src2);
 751 
 752   void cmp32(Register src1, Address src2);
 753 
 754 #ifndef _LP64
 755   void cmpklass(Address dst, Metadata* obj);
 756   void cmpklass(Register dst, Metadata* obj);
 757   void cmpoop(Address dst, jobject obj);
 758   void cmpoop_raw(Address dst, jobject obj);
 759 #endif // _LP64
 760 
 761   void cmpoop(Register src1, Register src2);
 762   void cmpoop(Register src1, Address src2);
 763   void cmpoop(Register dst, jobject obj);
 764   void cmpoop_raw(Register dst, jobject obj);
 765 
 766   // NOTE src2 must be the lval. This is NOT an mem-mem compare
 767   void cmpptr(Address src1, AddressLiteral src2);
 768 
 769   void cmpptr(Register src1, AddressLiteral src2);
 770 
 771   void cmpptr(Register src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
 772   void cmpptr(Register src1, Address src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
 773   // void cmpptr(Address src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
 774 
 775   void cmpptr(Register src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
 776   void cmpptr(Address src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
 777 
 778   // cmp64 to avoild hiding cmpq
 779   void cmp64(Register src1, AddressLiteral src);
 780 
 781   void cmpxchgptr(Register reg, Address adr);
 782 
 783   void locked_cmpxchgptr(Register reg, AddressLiteral adr);
 784 
 785 
 786   void imulptr(Register dst, Register src) { LP64_ONLY(imulq(dst, src)) NOT_LP64(imull(dst, src)); }
 787   void imulptr(Register dst, Register src, int imm32) { LP64_ONLY(imulq(dst, src, imm32)) NOT_LP64(imull(dst, src, imm32)); }
 788 
 789 
 790   void negptr(Register dst) { LP64_ONLY(negq(dst)) NOT_LP64(negl(dst)); }
 791 
 792   void notptr(Register dst) { LP64_ONLY(notq(dst)) NOT_LP64(notl(dst)); }
 793 
 794   void shlptr(Register dst, int32_t shift);
 795   void shlptr(Register dst) { LP64_ONLY(shlq(dst)) NOT_LP64(shll(dst)); }
 796 
 797   void shrptr(Register dst, int32_t shift);
 798   void shrptr(Register dst) { LP64_ONLY(shrq(dst)) NOT_LP64(shrl(dst)); }
 799 
 800   void sarptr(Register dst) { LP64_ONLY(sarq(dst)) NOT_LP64(sarl(dst)); }
 801   void sarptr(Register dst, int32_t src) { LP64_ONLY(sarq(dst, src)) NOT_LP64(sarl(dst, src)); }
 802 
 803   void subptr(Address dst, int32_t src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
 804 
 805   void subptr(Register dst, Address src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
 806   void subptr(Register dst, int32_t src);
 807   // Force generation of a 4 byte immediate value even if it fits into 8bit
 808   void subptr_imm32(Register dst, int32_t src);
 809   void subptr(Register dst, Register src);
 810   void subptr(Register dst, RegisterOrConstant src) {
 811     if (src.is_constant()) subptr(dst, (int) src.as_constant());
 812     else                   subptr(dst,       src.as_register());
 813   }
 814 
 815   void sbbptr(Address dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
 816   void sbbptr(Register dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
 817 
 818   void xchgptr(Register src1, Register src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
 819   void xchgptr(Register src1, Address src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
 820 
 821   void xaddptr(Address src1, Register src2) { LP64_ONLY(xaddq(src1, src2)) NOT_LP64(xaddl(src1, src2)) ; }
 822 
 823 
 824 
 825   // Helper functions for statistics gathering.
 826   // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes.
 827   void cond_inc32(Condition cond, AddressLiteral counter_addr);
 828   // Unconditional atomic increment.
 829   void atomic_incl(Address counter_addr);
 830   void atomic_incl(AddressLiteral counter_addr, Register scr = rscratch1);
 831 #ifdef _LP64
 832   void atomic_incq(Address counter_addr);
 833   void atomic_incq(AddressLiteral counter_addr, Register scr = rscratch1);
 834 #endif
 835   void atomic_incptr(AddressLiteral counter_addr, Register scr = rscratch1) { LP64_ONLY(atomic_incq(counter_addr, scr)) NOT_LP64(atomic_incl(counter_addr, scr)) ; }
 836   void atomic_incptr(Address counter_addr) { LP64_ONLY(atomic_incq(counter_addr)) NOT_LP64(atomic_incl(counter_addr)) ; }
 837 
 838   void lea(Register dst, AddressLiteral adr);
 839   void lea(Address dst, AddressLiteral adr);
 840   void lea(Register dst, Address adr) { Assembler::lea(dst, adr); }
 841 
 842   void leal32(Register dst, Address src) { leal(dst, src); }
 843 
 844   // Import other testl() methods from the parent class or else
 845   // they will be hidden by the following overriding declaration.
 846   using Assembler::testl;
 847   void testl(Register dst, AddressLiteral src);
 848 
 849   void orptr(Register dst, Address src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
 850   void orptr(Register dst, Register src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
 851   void orptr(Register dst, int32_t src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
 852   void orptr(Address dst, int32_t imm32) { LP64_ONLY(orq(dst, imm32)) NOT_LP64(orl(dst, imm32)); }
 853 
 854   void testptr(Register src, int32_t imm32) {  LP64_ONLY(testq(src, imm32)) NOT_LP64(testl(src, imm32)); }
 855   void testptr(Register src1, Address src2) { LP64_ONLY(testq(src1, src2)) NOT_LP64(testl(src1, src2)); }
 856   void testptr(Register src1, Register src2);
 857 
 858   void xorptr(Register dst, Register src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
 859   void xorptr(Register dst, Address src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
 860 
 861   // Calls
 862 
 863   void call(Label& L, relocInfo::relocType rtype);
 864   void call(Register entry);
 865 
 866   // NOTE: this call transfers to the effective address of entry NOT
 867   // the address contained by entry. This is because this is more natural
 868   // for jumps/calls.
 869   void call(AddressLiteral entry);
 870 
 871   // Emit the CompiledIC call idiom
 872   void ic_call(address entry, jint method_index = 0);
 873 
 874   // Jumps
 875 
 876   // NOTE: these jumps tranfer to the effective address of dst NOT
 877   // the address contained by dst. This is because this is more natural
 878   // for jumps/calls.
 879   void jump(AddressLiteral dst);
 880   void jump_cc(Condition cc, AddressLiteral dst);
 881 
 882   // 32bit can do a case table jump in one instruction but we no longer allow the base
 883   // to be installed in the Address class. This jump will tranfers to the address
 884   // contained in the location described by entry (not the address of entry)
 885   void jump(ArrayAddress entry);
 886 
 887   // Floating
 888 
 889   void andpd(XMMRegister dst, Address src) { Assembler::andpd(dst, src); }
 890   void andpd(XMMRegister dst, AddressLiteral src, Register scratch_reg = rscratch1);
 891   void andpd(XMMRegister dst, XMMRegister src) { Assembler::andpd(dst, src); }
 892 
 893   void andps(XMMRegister dst, XMMRegister src) { Assembler::andps(dst, src); }
 894   void andps(XMMRegister dst, Address src) { Assembler::andps(dst, src); }
 895   void andps(XMMRegister dst, AddressLiteral src, Register scratch_reg = rscratch1);
 896 
 897   void comiss(XMMRegister dst, XMMRegister src) { Assembler::comiss(dst, src); }
 898   void comiss(XMMRegister dst, Address src) { Assembler::comiss(dst, src); }
 899   void comiss(XMMRegister dst, AddressLiteral src);
 900 
 901   void comisd(XMMRegister dst, XMMRegister src) { Assembler::comisd(dst, src); }
 902   void comisd(XMMRegister dst, Address src) { Assembler::comisd(dst, src); }
 903   void comisd(XMMRegister dst, AddressLiteral src);
 904 
 905   void fadd_s(Address src)        { Assembler::fadd_s(src); }
 906   void fadd_s(AddressLiteral src) { Assembler::fadd_s(as_Address(src)); }
 907 
 908   void fldcw(Address src) { Assembler::fldcw(src); }
 909   void fldcw(AddressLiteral src);
 910 
 911   void fld_s(int index)   { Assembler::fld_s(index); }
 912   void fld_s(Address src) { Assembler::fld_s(src); }
 913   void fld_s(AddressLiteral src);
 914 
 915   void fld_d(Address src) { Assembler::fld_d(src); }
 916   void fld_d(AddressLiteral src);
 917 
 918   void fld_x(Address src) { Assembler::fld_x(src); }
 919   void fld_x(AddressLiteral src);
 920 
 921   void fmul_s(Address src)        { Assembler::fmul_s(src); }
 922   void fmul_s(AddressLiteral src) { Assembler::fmul_s(as_Address(src)); }
 923 
 924   void ldmxcsr(Address src) { Assembler::ldmxcsr(src); }
 925   void ldmxcsr(AddressLiteral src);
 926 
 927 #ifdef _LP64
 928  private:
 929   void sha256_AVX2_one_round_compute(
 930     Register  reg_old_h,
 931     Register  reg_a,
 932     Register  reg_b,
 933     Register  reg_c,
 934     Register  reg_d,
 935     Register  reg_e,
 936     Register  reg_f,
 937     Register  reg_g,
 938     Register  reg_h,
 939     int iter);
 940   void sha256_AVX2_four_rounds_compute_first(int start);
 941   void sha256_AVX2_four_rounds_compute_last(int start);
 942   void sha256_AVX2_one_round_and_sched(
 943         XMMRegister xmm_0,     /* == ymm4 on 0, 1, 2, 3 iterations, then rotate 4 registers left on 4, 8, 12 iterations */
 944         XMMRegister xmm_1,     /* ymm5 */  /* full cycle is 16 iterations */
 945         XMMRegister xmm_2,     /* ymm6 */
 946         XMMRegister xmm_3,     /* ymm7 */
 947         Register    reg_a,      /* == eax on 0 iteration, then rotate 8 register right on each next iteration */
 948         Register    reg_b,      /* ebx */    /* full cycle is 8 iterations */
 949         Register    reg_c,      /* edi */
 950         Register    reg_d,      /* esi */
 951         Register    reg_e,      /* r8d */
 952         Register    reg_f,      /* r9d */
 953         Register    reg_g,      /* r10d */
 954         Register    reg_h,      /* r11d */
 955         int iter);
 956 
 957   void addm(int disp, Register r1, Register r2);
 958   void gfmul(XMMRegister tmp0, XMMRegister t);
 959   void schoolbookAAD(int i, Register subkeyH, XMMRegister data, XMMRegister tmp0,
 960                      XMMRegister tmp1, XMMRegister tmp2, XMMRegister tmp3);
 961   void generateHtbl_one_block(Register htbl);
 962   void generateHtbl_eight_blocks(Register htbl);
 963  public:
 964   void sha256_AVX2(XMMRegister msg, XMMRegister state0, XMMRegister state1, XMMRegister msgtmp0,
 965                    XMMRegister msgtmp1, XMMRegister msgtmp2, XMMRegister msgtmp3, XMMRegister msgtmp4,
 966                    Register buf, Register state, Register ofs, Register limit, Register rsp,
 967                    bool multi_block, XMMRegister shuf_mask);
 968   void avx_ghash(Register state, Register htbl, Register data, Register blocks);
 969 #endif
 970 
 971 #ifdef _LP64
 972  private:
 973   void sha512_AVX2_one_round_compute(Register old_h, Register a, Register b, Register c, Register d,
 974                                      Register e, Register f, Register g, Register h, int iteration);
 975 
 976   void sha512_AVX2_one_round_and_schedule(XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
 977                                           Register a, Register b, Register c, Register d, Register e, Register f,
 978                                           Register g, Register h, int iteration);
 979 
 980   void addmq(int disp, Register r1, Register r2);
 981  public:
 982   void sha512_AVX2(XMMRegister msg, XMMRegister state0, XMMRegister state1, XMMRegister msgtmp0,
 983                    XMMRegister msgtmp1, XMMRegister msgtmp2, XMMRegister msgtmp3, XMMRegister msgtmp4,
 984                    Register buf, Register state, Register ofs, Register limit, Register rsp, bool multi_block,
 985                    XMMRegister shuf_mask);
 986 private:
 987   void roundEnc(XMMRegister key, int rnum);
 988   void lastroundEnc(XMMRegister key, int rnum);
 989   void roundDec(XMMRegister key, int rnum);
 990   void lastroundDec(XMMRegister key, int rnum);
 991   void ev_load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask);
 992 
 993 public:
 994   void aesecb_encrypt(Register source_addr, Register dest_addr, Register key, Register len);
 995   void aesecb_decrypt(Register source_addr, Register dest_addr, Register key, Register len);
 996   void aesctr_encrypt(Register src_addr, Register dest_addr, Register key, Register counter,
 997                       Register len_reg, Register used, Register used_addr, Register saved_encCounter_start);
 998 
 999 #endif
1000 
1001   void fast_sha1(XMMRegister abcd, XMMRegister e0, XMMRegister e1, XMMRegister msg0,
1002                  XMMRegister msg1, XMMRegister msg2, XMMRegister msg3, XMMRegister shuf_mask,
1003                  Register buf, Register state, Register ofs, Register limit, Register rsp,
1004                  bool multi_block);
1005 
1006 #ifdef _LP64
1007   void fast_sha256(XMMRegister msg, XMMRegister state0, XMMRegister state1, XMMRegister msgtmp0,
1008                    XMMRegister msgtmp1, XMMRegister msgtmp2, XMMRegister msgtmp3, XMMRegister msgtmp4,
1009                    Register buf, Register state, Register ofs, Register limit, Register rsp,
1010                    bool multi_block, XMMRegister shuf_mask);
1011 #else
1012   void fast_sha256(XMMRegister msg, XMMRegister state0, XMMRegister state1, XMMRegister msgtmp0,
1013                    XMMRegister msgtmp1, XMMRegister msgtmp2, XMMRegister msgtmp3, XMMRegister msgtmp4,
1014                    Register buf, Register state, Register ofs, Register limit, Register rsp,
1015                    bool multi_block);
1016 #endif
1017 
1018   void fast_exp(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1019                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1020                 Register rax, Register rcx, Register rdx, Register tmp);
1021 
1022 #ifdef _LP64
1023   void fast_log(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1024                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1025                 Register rax, Register rcx, Register rdx, Register tmp1, Register tmp2);
1026 
1027   void fast_log10(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1028                   XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1029                   Register rax, Register rcx, Register rdx, Register r11);
1030 
1031   void fast_pow(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3, XMMRegister xmm4,
1032                 XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7, Register rax, Register rcx,
1033                 Register rdx, Register tmp1, Register tmp2, Register tmp3, Register tmp4);
1034 
1035   void fast_sin(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1036                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1037                 Register rax, Register rbx, Register rcx, Register rdx, Register tmp1, Register tmp2,
1038                 Register tmp3, Register tmp4);
1039 
1040   void fast_cos(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1041                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1042                 Register rax, Register rcx, Register rdx, Register tmp1,
1043                 Register tmp2, Register tmp3, Register tmp4);
1044   void fast_tan(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1045                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1046                 Register rax, Register rcx, Register rdx, Register tmp1,
1047                 Register tmp2, Register tmp3, Register tmp4);
1048 #else
1049   void fast_log(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1050                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1051                 Register rax, Register rcx, Register rdx, Register tmp1);
1052 
1053   void fast_log10(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1054                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1055                 Register rax, Register rcx, Register rdx, Register tmp);
1056 
1057   void fast_pow(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3, XMMRegister xmm4,
1058                 XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7, Register rax, Register rcx,
1059                 Register rdx, Register tmp);
1060 
1061   void fast_sin(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1062                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1063                 Register rax, Register rbx, Register rdx);
1064 
1065   void fast_cos(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1066                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1067                 Register rax, Register rcx, Register rdx, Register tmp);
1068 
1069   void libm_sincos_huge(XMMRegister xmm0, XMMRegister xmm1, Register eax, Register ecx,
1070                         Register edx, Register ebx, Register esi, Register edi,
1071                         Register ebp, Register esp);
1072 
1073   void libm_reduce_pi04l(Register eax, Register ecx, Register edx, Register ebx,
1074                          Register esi, Register edi, Register ebp, Register esp);
1075 
1076   void libm_tancot_huge(XMMRegister xmm0, XMMRegister xmm1, Register eax, Register ecx,
1077                         Register edx, Register ebx, Register esi, Register edi,
1078                         Register ebp, Register esp);
1079 
1080   void fast_tan(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3,
1081                 XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7,
1082                 Register rax, Register rcx, Register rdx, Register tmp);
1083 #endif
1084 
1085   void increase_precision();
1086   void restore_precision();
1087 
1088 private:
1089 
1090   // these are private because users should be doing movflt/movdbl
1091 
1092   void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); }
1093   void movss(Address dst, XMMRegister src)     { Assembler::movss(dst, src); }
1094   void movss(XMMRegister dst, Address src)     { Assembler::movss(dst, src); }
1095   void movss(XMMRegister dst, AddressLiteral src);
1096 
1097   void movlpd(XMMRegister dst, Address src)    {Assembler::movlpd(dst, src); }
1098   void movlpd(XMMRegister dst, AddressLiteral src);
1099 
1100 public:
1101 
1102   void addsd(XMMRegister dst, XMMRegister src)    { Assembler::addsd(dst, src); }
1103   void addsd(XMMRegister dst, Address src)        { Assembler::addsd(dst, src); }
1104   void addsd(XMMRegister dst, AddressLiteral src);
1105 
1106   void addss(XMMRegister dst, XMMRegister src)    { Assembler::addss(dst, src); }
1107   void addss(XMMRegister dst, Address src)        { Assembler::addss(dst, src); }
1108   void addss(XMMRegister dst, AddressLiteral src);
1109 
1110   void addpd(XMMRegister dst, XMMRegister src)    { Assembler::addpd(dst, src); }
1111   void addpd(XMMRegister dst, Address src)        { Assembler::addpd(dst, src); }
1112   void addpd(XMMRegister dst, AddressLiteral src);
1113 
1114   void divsd(XMMRegister dst, XMMRegister src)    { Assembler::divsd(dst, src); }
1115   void divsd(XMMRegister dst, Address src)        { Assembler::divsd(dst, src); }
1116   void divsd(XMMRegister dst, AddressLiteral src);
1117 
1118   void divss(XMMRegister dst, XMMRegister src)    { Assembler::divss(dst, src); }
1119   void divss(XMMRegister dst, Address src)        { Assembler::divss(dst, src); }
1120   void divss(XMMRegister dst, AddressLiteral src);
1121 
1122   // Move Unaligned Double Quadword
1123   void movdqu(Address     dst, XMMRegister src);
1124   void movdqu(XMMRegister dst, Address src);
1125   void movdqu(XMMRegister dst, XMMRegister src);
1126   void movdqu(XMMRegister dst, AddressLiteral src, Register scratchReg = rscratch1);
1127   // AVX Unaligned forms
1128   void vmovdqu(Address     dst, XMMRegister src);
1129   void vmovdqu(XMMRegister dst, Address src);
1130   void vmovdqu(XMMRegister dst, XMMRegister src);
1131   void vmovdqu(XMMRegister dst, AddressLiteral src, Register scratch_reg = rscratch1);
1132   void evmovdquq(XMMRegister dst, Address src, int vector_len) { Assembler::evmovdquq(dst, src, vector_len); }
1133   void evmovdquq(XMMRegister dst, XMMRegister src, int vector_len) { Assembler::evmovdquq(dst, src, vector_len); }
1134   void evmovdquq(Address dst, XMMRegister src, int vector_len) { Assembler::evmovdquq(dst, src, vector_len); }
1135   void evmovdquq(XMMRegister dst, AddressLiteral src, int vector_len, Register rscratch);
1136 
1137   // Move Aligned Double Quadword
1138   void movdqa(XMMRegister dst, Address src)       { Assembler::movdqa(dst, src); }
1139   void movdqa(XMMRegister dst, XMMRegister src)   { Assembler::movdqa(dst, src); }
1140   void movdqa(XMMRegister dst, AddressLiteral src);
1141 
1142   void movsd(XMMRegister dst, XMMRegister src) { Assembler::movsd(dst, src); }
1143   void movsd(Address dst, XMMRegister src)     { Assembler::movsd(dst, src); }
1144   void movsd(XMMRegister dst, Address src)     { Assembler::movsd(dst, src); }
1145   void movsd(XMMRegister dst, AddressLiteral src);
1146 
1147   void mulpd(XMMRegister dst, XMMRegister src)    { Assembler::mulpd(dst, src); }
1148   void mulpd(XMMRegister dst, Address src)        { Assembler::mulpd(dst, src); }
1149   void mulpd(XMMRegister dst, AddressLiteral src);
1150 
1151   void mulsd(XMMRegister dst, XMMRegister src)    { Assembler::mulsd(dst, src); }
1152   void mulsd(XMMRegister dst, Address src)        { Assembler::mulsd(dst, src); }
1153   void mulsd(XMMRegister dst, AddressLiteral src);
1154 
1155   void mulss(XMMRegister dst, XMMRegister src)    { Assembler::mulss(dst, src); }
1156   void mulss(XMMRegister dst, Address src)        { Assembler::mulss(dst, src); }
1157   void mulss(XMMRegister dst, AddressLiteral src);
1158 
1159   // Carry-Less Multiplication Quadword
1160   void pclmulldq(XMMRegister dst, XMMRegister src) {
1161     // 0x00 - multiply lower 64 bits [0:63]
1162     Assembler::pclmulqdq(dst, src, 0x00);
1163   }
1164   void pclmulhdq(XMMRegister dst, XMMRegister src) {
1165     // 0x11 - multiply upper 64 bits [64:127]
1166     Assembler::pclmulqdq(dst, src, 0x11);
1167   }
1168 
1169   void pcmpeqb(XMMRegister dst, XMMRegister src);
1170   void pcmpeqw(XMMRegister dst, XMMRegister src);
1171 
1172   void pcmpestri(XMMRegister dst, Address src, int imm8);
1173   void pcmpestri(XMMRegister dst, XMMRegister src, int imm8);
1174 
1175   void pmovzxbw(XMMRegister dst, XMMRegister src);
1176   void pmovzxbw(XMMRegister dst, Address src);
1177 
1178   void pmovmskb(Register dst, XMMRegister src);
1179 
1180   void ptest(XMMRegister dst, XMMRegister src);
1181 
1182   void sqrtsd(XMMRegister dst, XMMRegister src)    { Assembler::sqrtsd(dst, src); }
1183   void sqrtsd(XMMRegister dst, Address src)        { Assembler::sqrtsd(dst, src); }
1184   void sqrtsd(XMMRegister dst, AddressLiteral src);
1185 
1186   void roundsd(XMMRegister dst, XMMRegister src, int32_t rmode)    { Assembler::roundsd(dst, src, rmode); }
1187   void roundsd(XMMRegister dst, Address src, int32_t rmode)        { Assembler::roundsd(dst, src, rmode); }
1188   void roundsd(XMMRegister dst, AddressLiteral src, int32_t rmode, Register scratch_reg);
1189 
1190   void sqrtss(XMMRegister dst, XMMRegister src)    { Assembler::sqrtss(dst, src); }
1191   void sqrtss(XMMRegister dst, Address src)        { Assembler::sqrtss(dst, src); }
1192   void sqrtss(XMMRegister dst, AddressLiteral src);
1193 
1194   void subsd(XMMRegister dst, XMMRegister src)    { Assembler::subsd(dst, src); }
1195   void subsd(XMMRegister dst, Address src)        { Assembler::subsd(dst, src); }
1196   void subsd(XMMRegister dst, AddressLiteral src);
1197 
1198   void subss(XMMRegister dst, XMMRegister src)    { Assembler::subss(dst, src); }
1199   void subss(XMMRegister dst, Address src)        { Assembler::subss(dst, src); }
1200   void subss(XMMRegister dst, AddressLiteral src);
1201 
1202   void ucomiss(XMMRegister dst, XMMRegister src) { Assembler::ucomiss(dst, src); }
1203   void ucomiss(XMMRegister dst, Address src)     { Assembler::ucomiss(dst, src); }
1204   void ucomiss(XMMRegister dst, AddressLiteral src);
1205 
1206   void ucomisd(XMMRegister dst, XMMRegister src) { Assembler::ucomisd(dst, src); }
1207   void ucomisd(XMMRegister dst, Address src)     { Assembler::ucomisd(dst, src); }
1208   void ucomisd(XMMRegister dst, AddressLiteral src);
1209 
1210   // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
1211   void xorpd(XMMRegister dst, XMMRegister src);
1212   void xorpd(XMMRegister dst, Address src)     { Assembler::xorpd(dst, src); }
1213   void xorpd(XMMRegister dst, AddressLiteral src, Register scratch_reg = rscratch1);
1214 
1215   // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
1216   void xorps(XMMRegister dst, XMMRegister src);
1217   void xorps(XMMRegister dst, Address src)     { Assembler::xorps(dst, src); }
1218   void xorps(XMMRegister dst, AddressLiteral src, Register scratch_reg = rscratch1);
1219 
1220   // Shuffle Bytes
1221   void pshufb(XMMRegister dst, XMMRegister src) { Assembler::pshufb(dst, src); }
1222   void pshufb(XMMRegister dst, Address src)     { Assembler::pshufb(dst, src); }
1223   void pshufb(XMMRegister dst, AddressLiteral src);
1224   // AVX 3-operands instructions
1225 
1226   void vaddsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddsd(dst, nds, src); }
1227   void vaddsd(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vaddsd(dst, nds, src); }
1228   void vaddsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1229 
1230   void vaddss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddss(dst, nds, src); }
1231   void vaddss(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vaddss(dst, nds, src); }
1232   void vaddss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1233 
1234   void vabsss(XMMRegister dst, XMMRegister nds, XMMRegister src, AddressLiteral negate_field, int vector_len);
1235   void vabssd(XMMRegister dst, XMMRegister nds, XMMRegister src, AddressLiteral negate_field, int vector_len);
1236 
1237   void vpaddb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1238   void vpaddb(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
1239 
1240   void vpaddw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1241   void vpaddw(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
1242 
1243   void vpaddd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) { Assembler::vpaddd(dst, nds, src, vector_len); }
1244   void vpaddd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) { Assembler::vpaddd(dst, nds, src, vector_len); }
1245   void vpaddd(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len, Register rscratch);
1246 
1247   void vpand(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) { Assembler::vpand(dst, nds, src, vector_len); }
1248   void vpand(XMMRegister dst, XMMRegister nds, Address src, int vector_len) { Assembler::vpand(dst, nds, src, vector_len); }
1249   void vpand(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len, Register scratch_reg = rscratch1);
1250 
1251   void vpbroadcastw(XMMRegister dst, XMMRegister src, int vector_len);
1252   void vpbroadcastw(XMMRegister dst, Address src, int vector_len) { Assembler::vpbroadcastw(dst, src, vector_len); }
1253 
1254   void vpcmpeqb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1255 
1256   void vpcmpeqw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1257 
1258   void vpmovzxbw(XMMRegister dst, Address src, int vector_len);
1259   void vpmovzxbw(XMMRegister dst, XMMRegister src, int vector_len) { Assembler::vpmovzxbw(dst, src, vector_len); }
1260 
1261   void vpmovmskb(Register dst, XMMRegister src);
1262 
1263   void vpmullw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1264   void vpmullw(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
1265 
1266   void vpsubb(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1267   void vpsubb(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
1268 
1269   void vpsubw(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1270   void vpsubw(XMMRegister dst, XMMRegister nds, Address src, int vector_len);
1271 
1272   void vpsraw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len);
1273   void vpsraw(XMMRegister dst, XMMRegister nds, int shift, int vector_len);
1274 
1275   void evpsraq(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len);
1276   void evpsraq(XMMRegister dst, XMMRegister nds, int shift, int vector_len);
1277 
1278   void vpsrlw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len);
1279   void vpsrlw(XMMRegister dst, XMMRegister nds, int shift, int vector_len);
1280 
1281   void vpsllw(XMMRegister dst, XMMRegister nds, XMMRegister shift, int vector_len);
1282   void vpsllw(XMMRegister dst, XMMRegister nds, int shift, int vector_len);
1283 
1284   void vptest(XMMRegister dst, XMMRegister src);
1285 
1286   void punpcklbw(XMMRegister dst, XMMRegister src);
1287   void punpcklbw(XMMRegister dst, Address src) { Assembler::punpcklbw(dst, src); }
1288 
1289   void pshufd(XMMRegister dst, Address src, int mode);
1290   void pshufd(XMMRegister dst, XMMRegister src, int mode) { Assembler::pshufd(dst, src, mode); }
1291 
1292   void pshuflw(XMMRegister dst, XMMRegister src, int mode);
1293   void pshuflw(XMMRegister dst, Address src, int mode) { Assembler::pshuflw(dst, src, mode); }
1294 
1295   void vandpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) { Assembler::vandpd(dst, nds, src, vector_len); }
1296   void vandpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len)     { Assembler::vandpd(dst, nds, src, vector_len); }
1297   void vandpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len, Register scratch_reg = rscratch1);
1298 
1299   void vandps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) { Assembler::vandps(dst, nds, src, vector_len); }
1300   void vandps(XMMRegister dst, XMMRegister nds, Address src, int vector_len)     { Assembler::vandps(dst, nds, src, vector_len); }
1301   void vandps(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len, Register scratch_reg = rscratch1);
1302 
1303   void vdivsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivsd(dst, nds, src); }
1304   void vdivsd(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vdivsd(dst, nds, src); }
1305   void vdivsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1306 
1307   void vdivss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivss(dst, nds, src); }
1308   void vdivss(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vdivss(dst, nds, src); }
1309   void vdivss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1310 
1311   void vmulsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulsd(dst, nds, src); }
1312   void vmulsd(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vmulsd(dst, nds, src); }
1313   void vmulsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1314 
1315   void vmulss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulss(dst, nds, src); }
1316   void vmulss(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vmulss(dst, nds, src); }
1317   void vmulss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1318 
1319   void vsubsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubsd(dst, nds, src); }
1320   void vsubsd(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vsubsd(dst, nds, src); }
1321   void vsubsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1322 
1323   void vsubss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubss(dst, nds, src); }
1324   void vsubss(XMMRegister dst, XMMRegister nds, Address src)     { Assembler::vsubss(dst, nds, src); }
1325   void vsubss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1326 
1327   void vnegatess(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1328   void vnegatesd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
1329 
1330   // AVX Vector instructions
1331 
1332   void vxorpd(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) { Assembler::vxorpd(dst, nds, src, vector_len); }
1333   void vxorpd(XMMRegister dst, XMMRegister nds, Address src, int vector_len) { Assembler::vxorpd(dst, nds, src, vector_len); }
1334   void vxorpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len, Register scratch_reg = rscratch1);
1335 
1336   void vxorps(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) { Assembler::vxorps(dst, nds, src, vector_len); }
1337   void vxorps(XMMRegister dst, XMMRegister nds, Address src, int vector_len) { Assembler::vxorps(dst, nds, src, vector_len); }
1338   void vxorps(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len, Register scratch_reg = rscratch1);
1339 
1340   void vpxor(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
1341     if (UseAVX > 1 || (vector_len < 1)) // vpxor 256 bit is available only in AVX2
1342       Assembler::vpxor(dst, nds, src, vector_len);
1343     else
1344       Assembler::vxorpd(dst, nds, src, vector_len);
1345   }
1346   void vpxor(XMMRegister dst, XMMRegister nds, Address src, int vector_len) {
1347     if (UseAVX > 1 || (vector_len < 1)) // vpxor 256 bit is available only in AVX2
1348       Assembler::vpxor(dst, nds, src, vector_len);
1349     else
1350       Assembler::vxorpd(dst, nds, src, vector_len);
1351   }
1352   void vpxor(XMMRegister dst, XMMRegister nds, AddressLiteral src, int vector_len, Register scratch_reg = rscratch1);
1353 
1354   // Simple version for AVX2 256bit vectors
1355   void vpxor(XMMRegister dst, XMMRegister src) { Assembler::vpxor(dst, dst, src, true); }
1356   void vpxor(XMMRegister dst, Address src) { Assembler::vpxor(dst, dst, src, true); }
1357 
1358   void vinserti128(XMMRegister dst, XMMRegister nds, XMMRegister src, uint8_t imm8) {
1359     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1360       Assembler::vinserti32x4(dst, dst, src, imm8);
1361     } else if (UseAVX > 1) {
1362       // vinserti128 is available only in AVX2
1363       Assembler::vinserti128(dst, nds, src, imm8);
1364     } else {
1365       Assembler::vinsertf128(dst, nds, src, imm8);
1366     }
1367   }
1368 
1369   void vinserti128(XMMRegister dst, XMMRegister nds, Address src, uint8_t imm8) {
1370     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1371       Assembler::vinserti32x4(dst, dst, src, imm8);
1372     } else if (UseAVX > 1) {
1373       // vinserti128 is available only in AVX2
1374       Assembler::vinserti128(dst, nds, src, imm8);
1375     } else {
1376       Assembler::vinsertf128(dst, nds, src, imm8);
1377     }
1378   }
1379 
1380   void vextracti128(XMMRegister dst, XMMRegister src, uint8_t imm8) {
1381     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1382       Assembler::vextracti32x4(dst, src, imm8);
1383     } else if (UseAVX > 1) {
1384       // vextracti128 is available only in AVX2
1385       Assembler::vextracti128(dst, src, imm8);
1386     } else {
1387       Assembler::vextractf128(dst, src, imm8);
1388     }
1389   }
1390 
1391   void vextracti128(Address dst, XMMRegister src, uint8_t imm8) {
1392     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1393       Assembler::vextracti32x4(dst, src, imm8);
1394     } else if (UseAVX > 1) {
1395       // vextracti128 is available only in AVX2
1396       Assembler::vextracti128(dst, src, imm8);
1397     } else {
1398       Assembler::vextractf128(dst, src, imm8);
1399     }
1400   }
1401 
1402   // 128bit copy to/from high 128 bits of 256bit (YMM) vector registers
1403   void vinserti128_high(XMMRegister dst, XMMRegister src) {
1404     vinserti128(dst, dst, src, 1);
1405   }
1406   void vinserti128_high(XMMRegister dst, Address src) {
1407     vinserti128(dst, dst, src, 1);
1408   }
1409   void vextracti128_high(XMMRegister dst, XMMRegister src) {
1410     vextracti128(dst, src, 1);
1411   }
1412   void vextracti128_high(Address dst, XMMRegister src) {
1413     vextracti128(dst, src, 1);
1414   }
1415 
1416   void vinsertf128_high(XMMRegister dst, XMMRegister src) {
1417     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1418       Assembler::vinsertf32x4(dst, dst, src, 1);
1419     } else {
1420       Assembler::vinsertf128(dst, dst, src, 1);
1421     }
1422   }
1423 
1424   void vinsertf128_high(XMMRegister dst, Address src) {
1425     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1426       Assembler::vinsertf32x4(dst, dst, src, 1);
1427     } else {
1428       Assembler::vinsertf128(dst, dst, src, 1);
1429     }
1430   }
1431 
1432   void vextractf128_high(XMMRegister dst, XMMRegister src) {
1433     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1434       Assembler::vextractf32x4(dst, src, 1);
1435     } else {
1436       Assembler::vextractf128(dst, src, 1);
1437     }
1438   }
1439 
1440   void vextractf128_high(Address dst, XMMRegister src) {
1441     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1442       Assembler::vextractf32x4(dst, src, 1);
1443     } else {
1444       Assembler::vextractf128(dst, src, 1);
1445     }
1446   }
1447 
1448   // 256bit copy to/from high 256 bits of 512bit (ZMM) vector registers
1449   void vinserti64x4_high(XMMRegister dst, XMMRegister src) {
1450     Assembler::vinserti64x4(dst, dst, src, 1);
1451   }
1452   void vinsertf64x4_high(XMMRegister dst, XMMRegister src) {
1453     Assembler::vinsertf64x4(dst, dst, src, 1);
1454   }
1455   void vextracti64x4_high(XMMRegister dst, XMMRegister src) {
1456     Assembler::vextracti64x4(dst, src, 1);
1457   }
1458   void vextractf64x4_high(XMMRegister dst, XMMRegister src) {
1459     Assembler::vextractf64x4(dst, src, 1);
1460   }
1461   void vextractf64x4_high(Address dst, XMMRegister src) {
1462     Assembler::vextractf64x4(dst, src, 1);
1463   }
1464   void vinsertf64x4_high(XMMRegister dst, Address src) {
1465     Assembler::vinsertf64x4(dst, dst, src, 1);
1466   }
1467 
1468   // 128bit copy to/from low 128 bits of 256bit (YMM) vector registers
1469   void vinserti128_low(XMMRegister dst, XMMRegister src) {
1470     vinserti128(dst, dst, src, 0);
1471   }
1472   void vinserti128_low(XMMRegister dst, Address src) {
1473     vinserti128(dst, dst, src, 0);
1474   }
1475   void vextracti128_low(XMMRegister dst, XMMRegister src) {
1476     vextracti128(dst, src, 0);
1477   }
1478   void vextracti128_low(Address dst, XMMRegister src) {
1479     vextracti128(dst, src, 0);
1480   }
1481 
1482   void vinsertf128_low(XMMRegister dst, XMMRegister src) {
1483     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1484       Assembler::vinsertf32x4(dst, dst, src, 0);
1485     } else {
1486       Assembler::vinsertf128(dst, dst, src, 0);
1487     }
1488   }
1489 
1490   void vinsertf128_low(XMMRegister dst, Address src) {
1491     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1492       Assembler::vinsertf32x4(dst, dst, src, 0);
1493     } else {
1494       Assembler::vinsertf128(dst, dst, src, 0);
1495     }
1496   }
1497 
1498   void vextractf128_low(XMMRegister dst, XMMRegister src) {
1499     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1500       Assembler::vextractf32x4(dst, src, 0);
1501     } else {
1502       Assembler::vextractf128(dst, src, 0);
1503     }
1504   }
1505 
1506   void vextractf128_low(Address dst, XMMRegister src) {
1507     if (UseAVX > 2 && VM_Version::supports_avx512novl()) {
1508       Assembler::vextractf32x4(dst, src, 0);
1509     } else {
1510       Assembler::vextractf128(dst, src, 0);
1511     }
1512   }
1513 
1514   // 256bit copy to/from low 256 bits of 512bit (ZMM) vector registers
1515   void vinserti64x4_low(XMMRegister dst, XMMRegister src) {
1516     Assembler::vinserti64x4(dst, dst, src, 0);
1517   }
1518   void vinsertf64x4_low(XMMRegister dst, XMMRegister src) {
1519     Assembler::vinsertf64x4(dst, dst, src, 0);
1520   }
1521   void vextracti64x4_low(XMMRegister dst, XMMRegister src) {
1522     Assembler::vextracti64x4(dst, src, 0);
1523   }
1524   void vextractf64x4_low(XMMRegister dst, XMMRegister src) {
1525     Assembler::vextractf64x4(dst, src, 0);
1526   }
1527   void vextractf64x4_low(Address dst, XMMRegister src) {
1528     Assembler::vextractf64x4(dst, src, 0);
1529   }
1530   void vinsertf64x4_low(XMMRegister dst, Address src) {
1531     Assembler::vinsertf64x4(dst, dst, src, 0);
1532   }
1533 
1534   // Carry-Less Multiplication Quadword
1535   void vpclmulldq(XMMRegister dst, XMMRegister nds, XMMRegister src) {
1536     // 0x00 - multiply lower 64 bits [0:63]
1537     Assembler::vpclmulqdq(dst, nds, src, 0x00);
1538   }
1539   void vpclmulhdq(XMMRegister dst, XMMRegister nds, XMMRegister src) {
1540     // 0x11 - multiply upper 64 bits [64:127]
1541     Assembler::vpclmulqdq(dst, nds, src, 0x11);
1542   }
1543   void vpclmullqhqdq(XMMRegister dst, XMMRegister nds, XMMRegister src) {
1544     // 0x10 - multiply nds[0:63] and src[64:127]
1545     Assembler::vpclmulqdq(dst, nds, src, 0x10);
1546   }
1547   void vpclmulhqlqdq(XMMRegister dst, XMMRegister nds, XMMRegister src) {
1548     //0x01 - multiply nds[64:127] and src[0:63]
1549     Assembler::vpclmulqdq(dst, nds, src, 0x01);
1550   }
1551 
1552   void evpclmulldq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
1553     // 0x00 - multiply lower 64 bits [0:63]
1554     Assembler::evpclmulqdq(dst, nds, src, 0x00, vector_len);
1555   }
1556   void evpclmulhdq(XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len) {
1557     // 0x11 - multiply upper 64 bits [64:127]
1558     Assembler::evpclmulqdq(dst, nds, src, 0x11, vector_len);
1559   }
1560 
1561   // Data
1562 
1563   void cmov32( Condition cc, Register dst, Address  src);
1564   void cmov32( Condition cc, Register dst, Register src);
1565 
1566   void cmov(   Condition cc, Register dst, Register src) { cmovptr(cc, dst, src); }
1567 
1568   void cmovptr(Condition cc, Register dst, Address  src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); }
1569   void cmovptr(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); }
1570 
1571   void movoop(Register dst, jobject obj);
1572   void movoop(Address dst, jobject obj);
1573 
1574   void mov_metadata(Register dst, Metadata* obj);
1575   void mov_metadata(Address dst, Metadata* obj);
1576 
1577   void movptr(ArrayAddress dst, Register src);
1578   // can this do an lea?
1579   void movptr(Register dst, ArrayAddress src);
1580 
1581   void movptr(Register dst, Address src);
1582 
1583 #ifdef _LP64
1584   void movptr(Register dst, AddressLiteral src, Register scratch=rscratch1);
1585 #else
1586   void movptr(Register dst, AddressLiteral src, Register scratch=noreg); // Scratch reg is ignored in 32-bit
1587 #endif
1588 
1589   void movptr(Register dst, intptr_t src);
1590   void movptr(Register dst, Register src);
1591   void movptr(Address dst, intptr_t src);
1592 
1593   void movptr(Address dst, Register src);
1594 
1595   void movptr(Register dst, RegisterOrConstant src) {
1596     if (src.is_constant()) movptr(dst, src.as_constant());
1597     else                   movptr(dst, src.as_register());
1598   }
1599 
1600 #ifdef _LP64
1601   // Generally the next two are only used for moving NULL
1602   // Although there are situations in initializing the mark word where
1603   // they could be used. They are dangerous.
1604 
1605   // They only exist on LP64 so that int32_t and intptr_t are not the same
1606   // and we have ambiguous declarations.
1607 
1608   void movptr(Address dst, int32_t imm32);
1609   void movptr(Register dst, int32_t imm32);
1610 #endif // _LP64
1611 
1612   // to avoid hiding movl
1613   void mov32(AddressLiteral dst, Register src);
1614   void mov32(Register dst, AddressLiteral src);
1615 
1616   // to avoid hiding movb
1617   void movbyte(ArrayAddress dst, int src);
1618 
1619   // Import other mov() methods from the parent class or else
1620   // they will be hidden by the following overriding declaration.
1621   using Assembler::movdl;
1622   using Assembler::movq;
1623   void movdl(XMMRegister dst, AddressLiteral src);
1624   void movq(XMMRegister dst, AddressLiteral src);
1625 
1626   // Can push value or effective address
1627   void pushptr(AddressLiteral src);
1628 
1629   void pushptr(Address src) { LP64_ONLY(pushq(src)) NOT_LP64(pushl(src)); }
1630   void popptr(Address src) { LP64_ONLY(popq(src)) NOT_LP64(popl(src)); }
1631 
1632   void pushoop(jobject obj);
1633   void pushklass(Metadata* obj);
1634 
1635   // sign extend as need a l to ptr sized element
1636   void movl2ptr(Register dst, Address src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(movl(dst, src)); }
1637   void movl2ptr(Register dst, Register src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(if (dst != src) movl(dst, src)); }
1638 
1639 #ifdef COMPILER2
1640   // Generic instructions support for use in .ad files C2 code generation
1641   void vabsnegd(int opcode, XMMRegister dst, XMMRegister src, Register scr);
1642   void vabsnegd(int opcode, XMMRegister dst, XMMRegister src, int vector_len, Register scr);
1643   void vabsnegf(int opcode, XMMRegister dst, XMMRegister src, Register scr);
1644   void vabsnegf(int opcode, XMMRegister dst, XMMRegister src, int vector_len, Register scr);
1645   void vextendbw(bool sign, XMMRegister dst, XMMRegister src, int vector_len);
1646   void vextendbw(bool sign, XMMRegister dst, XMMRegister src);
1647   void vshiftd(int opcode, XMMRegister dst, XMMRegister src);
1648   void vshiftd(int opcode, XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1649   void vshiftw(int opcode, XMMRegister dst, XMMRegister src);
1650   void vshiftw(int opcode, XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1651   void vshiftq(int opcode, XMMRegister dst, XMMRegister src);
1652   void vshiftq(int opcode, XMMRegister dst, XMMRegister nds, XMMRegister src, int vector_len);
1653 #endif
1654 
1655   // C2 compiled method's prolog code.
1656   void verified_entry(int framesize, int stack_bang_size, bool fp_mode_24b, bool is_stub);
1657 
1658   // clear memory of size 'cnt' qwords, starting at 'base';
1659   // if 'is_large' is set, do not try to produce short loop
1660   void clear_mem(Register base, Register cnt, Register rtmp, XMMRegister xtmp, bool is_large);
1661 
1662   // clear memory of size 'cnt' qwords, starting at 'base' using XMM/YMM registers
1663   void xmm_clear_mem(Register base, Register cnt, XMMRegister xtmp);
1664 
1665 #ifdef COMPILER2
1666   void string_indexof_char(Register str1, Register cnt1, Register ch, Register result,
1667                            XMMRegister vec1, XMMRegister vec2, XMMRegister vec3, Register tmp);
1668 
1669   // IndexOf strings.
1670   // Small strings are loaded through stack if they cross page boundary.
1671   void string_indexof(Register str1, Register str2,
1672                       Register cnt1, Register cnt2,
1673                       int int_cnt2,  Register result,
1674                       XMMRegister vec, Register tmp,
1675                       int ae);
1676 
1677   // IndexOf for constant substrings with size >= 8 elements
1678   // which don't need to be loaded through stack.
1679   void string_indexofC8(Register str1, Register str2,
1680                       Register cnt1, Register cnt2,
1681                       int int_cnt2,  Register result,
1682                       XMMRegister vec, Register tmp,
1683                       int ae);
1684 
1685     // Smallest code: we don't need to load through stack,
1686     // check string tail.
1687 
1688   // helper function for string_compare
1689   void load_next_elements(Register elem1, Register elem2, Register str1, Register str2,
1690                           Address::ScaleFactor scale, Address::ScaleFactor scale1,
1691                           Address::ScaleFactor scale2, Register index, int ae);
1692   // Compare strings.
1693   void string_compare(Register str1, Register str2,
1694                       Register cnt1, Register cnt2, Register result,
1695                       XMMRegister vec1, int ae);
1696 
1697   // Search for Non-ASCII character (Negative byte value) in a byte array,
1698   // return true if it has any and false otherwise.
1699   void has_negatives(Register ary1, Register len,
1700                      Register result, Register tmp1,
1701                      XMMRegister vec1, XMMRegister vec2);
1702 
1703   // Compare char[] or byte[] arrays.
1704   void arrays_equals(bool is_array_equ, Register ary1, Register ary2,
1705                      Register limit, Register result, Register chr,
1706                      XMMRegister vec1, XMMRegister vec2, bool is_char);
1707 
1708 #endif
1709 
1710   // Fill primitive arrays
1711   void generate_fill(BasicType t, bool aligned,
1712                      Register to, Register value, Register count,
1713                      Register rtmp, XMMRegister xtmp);
1714 
1715   void encode_iso_array(Register src, Register dst, Register len,
1716                         XMMRegister tmp1, XMMRegister tmp2, XMMRegister tmp3,
1717                         XMMRegister tmp4, Register tmp5, Register result);
1718 
1719 #ifdef _LP64
1720   void add2_with_carry(Register dest_hi, Register dest_lo, Register src1, Register src2);
1721   void multiply_64_x_64_loop(Register x, Register xstart, Register x_xstart,
1722                              Register y, Register y_idx, Register z,
1723                              Register carry, Register product,
1724                              Register idx, Register kdx);
1725   void multiply_add_128_x_128(Register x_xstart, Register y, Register z,
1726                               Register yz_idx, Register idx,
1727                               Register carry, Register product, int offset);
1728   void multiply_128_x_128_bmi2_loop(Register y, Register z,
1729                                     Register carry, Register carry2,
1730                                     Register idx, Register jdx,
1731                                     Register yz_idx1, Register yz_idx2,
1732                                     Register tmp, Register tmp3, Register tmp4);
1733   void multiply_128_x_128_loop(Register x_xstart, Register y, Register z,
1734                                Register yz_idx, Register idx, Register jdx,
1735                                Register carry, Register product,
1736                                Register carry2);
1737   void multiply_to_len(Register x, Register xlen, Register y, Register ylen, Register z, Register zlen,
1738                        Register tmp1, Register tmp2, Register tmp3, Register tmp4, Register tmp5);
1739   void square_rshift(Register x, Register len, Register z, Register tmp1, Register tmp3,
1740                      Register tmp4, Register tmp5, Register rdxReg, Register raxReg);
1741   void multiply_add_64_bmi2(Register sum, Register op1, Register op2, Register carry,
1742                             Register tmp2);
1743   void multiply_add_64(Register sum, Register op1, Register op2, Register carry,
1744                        Register rdxReg, Register raxReg);
1745   void add_one_64(Register z, Register zlen, Register carry, Register tmp1);
1746   void lshift_by_1(Register x, Register len, Register z, Register zlen, Register tmp1, Register tmp2,
1747                        Register tmp3, Register tmp4);
1748   void square_to_len(Register x, Register len, Register z, Register zlen, Register tmp1, Register tmp2,
1749                      Register tmp3, Register tmp4, Register tmp5, Register rdxReg, Register raxReg);
1750 
1751   void mul_add_128_x_32_loop(Register out, Register in, Register offset, Register len, Register tmp1,
1752                Register tmp2, Register tmp3, Register tmp4, Register tmp5, Register rdxReg,
1753                Register raxReg);
1754   void mul_add(Register out, Register in, Register offset, Register len, Register k, Register tmp1,
1755                Register tmp2, Register tmp3, Register tmp4, Register tmp5, Register rdxReg,
1756                Register raxReg);
1757   void vectorized_mismatch(Register obja, Register objb, Register length, Register log2_array_indxscale,
1758                            Register result, Register tmp1, Register tmp2,
1759                            XMMRegister vec1, XMMRegister vec2, XMMRegister vec3);
1760 #endif
1761 
1762   // CRC32 code for java.util.zip.CRC32::updateBytes() intrinsic.
1763   void update_byte_crc32(Register crc, Register val, Register table);
1764   void kernel_crc32(Register crc, Register buf, Register len, Register table, Register tmp);
1765   // CRC32C code for java.util.zip.CRC32C::updateBytes() intrinsic
1766   // Note on a naming convention:
1767   // Prefix w = register only used on a Westmere+ architecture
1768   // Prefix n = register only used on a Nehalem architecture
1769 #ifdef _LP64
1770   void crc32c_ipl_alg4(Register in_out, uint32_t n,
1771                        Register tmp1, Register tmp2, Register tmp3);
1772 #else
1773   void crc32c_ipl_alg4(Register in_out, uint32_t n,
1774                        Register tmp1, Register tmp2, Register tmp3,
1775                        XMMRegister xtmp1, XMMRegister xtmp2);
1776 #endif
1777   void crc32c_pclmulqdq(XMMRegister w_xtmp1,
1778                         Register in_out,
1779                         uint32_t const_or_pre_comp_const_index, bool is_pclmulqdq_supported,
1780                         XMMRegister w_xtmp2,
1781                         Register tmp1,
1782                         Register n_tmp2, Register n_tmp3);
1783   void crc32c_rec_alt2(uint32_t const_or_pre_comp_const_index_u1, uint32_t const_or_pre_comp_const_index_u2, bool is_pclmulqdq_supported, Register in_out, Register in1, Register in2,
1784                        XMMRegister w_xtmp1, XMMRegister w_xtmp2, XMMRegister w_xtmp3,
1785                        Register tmp1, Register tmp2,
1786                        Register n_tmp3);
1787   void crc32c_proc_chunk(uint32_t size, uint32_t const_or_pre_comp_const_index_u1, uint32_t const_or_pre_comp_const_index_u2, bool is_pclmulqdq_supported,
1788                          Register in_out1, Register in_out2, Register in_out3,
1789                          Register tmp1, Register tmp2, Register tmp3,
1790                          XMMRegister w_xtmp1, XMMRegister w_xtmp2, XMMRegister w_xtmp3,
1791                          Register tmp4, Register tmp5,
1792                          Register n_tmp6);
1793   void crc32c_ipl_alg2_alt2(Register in_out, Register in1, Register in2,
1794                             Register tmp1, Register tmp2, Register tmp3,
1795                             Register tmp4, Register tmp5, Register tmp6,
1796                             XMMRegister w_xtmp1, XMMRegister w_xtmp2, XMMRegister w_xtmp3,
1797                             bool is_pclmulqdq_supported);
1798   // Fold 128-bit data chunk
1799   void fold_128bit_crc32(XMMRegister xcrc, XMMRegister xK, XMMRegister xtmp, Register buf, int offset);
1800   void fold_128bit_crc32(XMMRegister xcrc, XMMRegister xK, XMMRegister xtmp, XMMRegister xbuf);
1801   // Fold 8-bit data
1802   void fold_8bit_crc32(Register crc, Register table, Register tmp);
1803   void fold_8bit_crc32(XMMRegister crc, Register table, XMMRegister xtmp, Register tmp);
1804   void fold_128bit_crc32_avx512(XMMRegister xcrc, XMMRegister xK, XMMRegister xtmp, Register buf, int offset);
1805 
1806   // Compress char[] array to byte[].
1807   void char_array_compress(Register src, Register dst, Register len,
1808                            XMMRegister tmp1, XMMRegister tmp2, XMMRegister tmp3,
1809                            XMMRegister tmp4, Register tmp5, Register result);
1810 
1811   // Inflate byte[] array to char[].
1812   void byte_array_inflate(Register src, Register dst, Register len,
1813                           XMMRegister tmp1, Register tmp2);
1814 
1815 #ifdef _LP64
1816   void cache_wb(Address line);
1817   void cache_wbsync(bool is_pre);
1818 #endif // _LP64
1819 };
1820 
1821 /**
1822  * class SkipIfEqual:
1823  *
1824  * Instantiating this class will result in assembly code being output that will
1825  * jump around any code emitted between the creation of the instance and it's
1826  * automatic destruction at the end of a scope block, depending on the value of
1827  * the flag passed to the constructor, which will be checked at run-time.
1828  */
1829 class SkipIfEqual {
1830  private:
1831   MacroAssembler* _masm;
1832   Label _label;
1833 
1834  public:
1835    SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value);
1836    ~SkipIfEqual();
1837 };
1838 
1839 #endif // CPU_X86_MACROASSEMBLER_X86_HPP