annotate hotspot/src/cpu/x86/vm/macroAssembler_x86.hpp @ 14626:0cf4eccf130f

8003240: x86: move MacroAssembler into separate file Reviewed-by: kvn
author twisti
date Fri, 30 Nov 2012 15:23:16 -0800
parents
children 8aa0a51a7137
rev   line source
twisti@14626 1 /*
twisti@14626 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
twisti@14626 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
twisti@14626 4 *
twisti@14626 5 * This code is free software; you can redistribute it and/or modify it
twisti@14626 6 * under the terms of the GNU General Public License version 2 only, as
twisti@14626 7 * published by the Free Software Foundation.
twisti@14626 8 *
twisti@14626 9 * This code is distributed in the hope that it will be useful, but WITHOUT
twisti@14626 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
twisti@14626 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
twisti@14626 12 * version 2 for more details (a copy is included in the LICENSE file that
twisti@14626 13 * accompanied this code).
twisti@14626 14 *
twisti@14626 15 * You should have received a copy of the GNU General Public License version
twisti@14626 16 * 2 along with this work; if not, write to the Free Software Foundation,
twisti@14626 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
twisti@14626 18 *
twisti@14626 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
twisti@14626 20 * or visit www.oracle.com if you need additional information or have any
twisti@14626 21 * questions.
twisti@14626 22 *
twisti@14626 23 */
twisti@14626 24
twisti@14626 25 #ifndef CPU_X86_VM_MACROASSEMBLER_X86_HPP
twisti@14626 26 #define CPU_X86_VM_MACROASSEMBLER_X86_HPP
twisti@14626 27
twisti@14626 28 #include "asm/assembler.hpp"
twisti@14626 29
twisti@14626 30
twisti@14626 31 // MacroAssembler extends Assembler by frequently used macros.
twisti@14626 32 //
twisti@14626 33 // Instructions for which a 'better' code sequence exists depending
twisti@14626 34 // on arguments should also go in here.
twisti@14626 35
twisti@14626 36 class MacroAssembler: public Assembler {
twisti@14626 37 friend class LIR_Assembler;
twisti@14626 38 friend class Runtime1; // as_Address()
twisti@14626 39
twisti@14626 40 protected:
twisti@14626 41
twisti@14626 42 Address as_Address(AddressLiteral adr);
twisti@14626 43 Address as_Address(ArrayAddress adr);
twisti@14626 44
twisti@14626 45 // Support for VM calls
twisti@14626 46 //
twisti@14626 47 // This is the base routine called by the different versions of call_VM_leaf. The interpreter
twisti@14626 48 // may customize this version by overriding it for its purposes (e.g., to save/restore
twisti@14626 49 // additional registers when doing a VM call).
twisti@14626 50 #ifdef CC_INTERP
twisti@14626 51 // c++ interpreter never wants to use interp_masm version of call_VM
twisti@14626 52 #define VIRTUAL
twisti@14626 53 #else
twisti@14626 54 #define VIRTUAL virtual
twisti@14626 55 #endif
twisti@14626 56
twisti@14626 57 VIRTUAL void call_VM_leaf_base(
twisti@14626 58 address entry_point, // the entry point
twisti@14626 59 int number_of_arguments // the number of arguments to pop after the call
twisti@14626 60 );
twisti@14626 61
twisti@14626 62 // This is the base routine called by the different versions of call_VM. The interpreter
twisti@14626 63 // may customize this version by overriding it for its purposes (e.g., to save/restore
twisti@14626 64 // additional registers when doing a VM call).
twisti@14626 65 //
twisti@14626 66 // If no java_thread register is specified (noreg) than rdi will be used instead. call_VM_base
twisti@14626 67 // returns the register which contains the thread upon return. If a thread register has been
twisti@14626 68 // specified, the return value will correspond to that register. If no last_java_sp is specified
twisti@14626 69 // (noreg) than rsp will be used instead.
twisti@14626 70 VIRTUAL void call_VM_base( // returns the register containing the thread upon return
twisti@14626 71 Register oop_result, // where an oop-result ends up if any; use noreg otherwise
twisti@14626 72 Register java_thread, // the thread if computed before ; use noreg otherwise
twisti@14626 73 Register last_java_sp, // to set up last_Java_frame in stubs; use noreg otherwise
twisti@14626 74 address entry_point, // the entry point
twisti@14626 75 int number_of_arguments, // the number of arguments (w/o thread) to pop after the call
twisti@14626 76 bool check_exceptions // whether to check for pending exceptions after return
twisti@14626 77 );
twisti@14626 78
twisti@14626 79 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code.
twisti@14626 80 // The implementation is only non-empty for the InterpreterMacroAssembler,
twisti@14626 81 // as only the interpreter handles PopFrame and ForceEarlyReturn requests.
twisti@14626 82 virtual void check_and_handle_popframe(Register java_thread);
twisti@14626 83 virtual void check_and_handle_earlyret(Register java_thread);
twisti@14626 84
twisti@14626 85 void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true);
twisti@14626 86
twisti@14626 87 // helpers for FPU flag access
twisti@14626 88 // tmp is a temporary register, if none is available use noreg
twisti@14626 89 void save_rax (Register tmp);
twisti@14626 90 void restore_rax(Register tmp);
twisti@14626 91
twisti@14626 92 public:
twisti@14626 93 MacroAssembler(CodeBuffer* code) : Assembler(code) {}
twisti@14626 94
twisti@14626 95 // Support for NULL-checks
twisti@14626 96 //
twisti@14626 97 // Generates code that causes a NULL OS exception if the content of reg is NULL.
twisti@14626 98 // If the accessed location is M[reg + offset] and the offset is known, provide the
twisti@14626 99 // offset. No explicit code generation is needed if the offset is within a certain
twisti@14626 100 // range (0 <= offset <= page_size).
twisti@14626 101
twisti@14626 102 void null_check(Register reg, int offset = -1);
twisti@14626 103 static bool needs_explicit_null_check(intptr_t offset);
twisti@14626 104
twisti@14626 105 // Required platform-specific helpers for Label::patch_instructions.
twisti@14626 106 // They _shadow_ the declarations in AbstractAssembler, which are undefined.
twisti@14626 107 void pd_patch_instruction(address branch, address target) {
twisti@14626 108 unsigned char op = branch[0];
twisti@14626 109 assert(op == 0xE8 /* call */ ||
twisti@14626 110 op == 0xE9 /* jmp */ ||
twisti@14626 111 op == 0xEB /* short jmp */ ||
twisti@14626 112 (op & 0xF0) == 0x70 /* short jcc */ ||
twisti@14626 113 op == 0x0F && (branch[1] & 0xF0) == 0x80 /* jcc */,
twisti@14626 114 "Invalid opcode at patch point");
twisti@14626 115
twisti@14626 116 if (op == 0xEB || (op & 0xF0) == 0x70) {
twisti@14626 117 // short offset operators (jmp and jcc)
twisti@14626 118 char* disp = (char*) &branch[1];
twisti@14626 119 int imm8 = target - (address) &disp[1];
twisti@14626 120 guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset");
twisti@14626 121 *disp = imm8;
twisti@14626 122 } else {
twisti@14626 123 int* disp = (int*) &branch[(op == 0x0F)? 2: 1];
twisti@14626 124 int imm32 = target - (address) &disp[1];
twisti@14626 125 *disp = imm32;
twisti@14626 126 }
twisti@14626 127 }
twisti@14626 128
twisti@14626 129 #ifndef PRODUCT
twisti@14626 130 static void pd_print_patched_instruction(address branch) {
twisti@14626 131 const char* s;
twisti@14626 132 unsigned char op = branch[0];
twisti@14626 133 if (op == 0xE8) {
twisti@14626 134 s = "call";
twisti@14626 135 } else if (op == 0xE9 || op == 0xEB) {
twisti@14626 136 s = "jmp";
twisti@14626 137 } else if ((op & 0xF0) == 0x70) {
twisti@14626 138 s = "jcc";
twisti@14626 139 } else if (op == 0x0F) {
twisti@14626 140 s = "jcc";
twisti@14626 141 } else {
twisti@14626 142 s = "????";
twisti@14626 143 }
twisti@14626 144 tty->print("%s (unresolved)", s);
twisti@14626 145 }
twisti@14626 146 #endif
twisti@14626 147
twisti@14626 148 // The following 4 methods return the offset of the appropriate move instruction
twisti@14626 149
twisti@14626 150 // Support for fast byte/short loading with zero extension (depending on particular CPU)
twisti@14626 151 int load_unsigned_byte(Register dst, Address src);
twisti@14626 152 int load_unsigned_short(Register dst, Address src);
twisti@14626 153
twisti@14626 154 // Support for fast byte/short loading with sign extension (depending on particular CPU)
twisti@14626 155 int load_signed_byte(Register dst, Address src);
twisti@14626 156 int load_signed_short(Register dst, Address src);
twisti@14626 157
twisti@14626 158 // Support for sign-extension (hi:lo = extend_sign(lo))
twisti@14626 159 void extend_sign(Register hi, Register lo);
twisti@14626 160
twisti@14626 161 // Load and store values by size and signed-ness
twisti@14626 162 void load_sized_value(Register dst, Address src, size_t size_in_bytes, bool is_signed, Register dst2 = noreg);
twisti@14626 163 void store_sized_value(Address dst, Register src, size_t size_in_bytes, Register src2 = noreg);
twisti@14626 164
twisti@14626 165 // Support for inc/dec with optimal instruction selection depending on value
twisti@14626 166
twisti@14626 167 void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; }
twisti@14626 168 void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; }
twisti@14626 169
twisti@14626 170 void decrementl(Address dst, int value = 1);
twisti@14626 171 void decrementl(Register reg, int value = 1);
twisti@14626 172
twisti@14626 173 void decrementq(Register reg, int value = 1);
twisti@14626 174 void decrementq(Address dst, int value = 1);
twisti@14626 175
twisti@14626 176 void incrementl(Address dst, int value = 1);
twisti@14626 177 void incrementl(Register reg, int value = 1);
twisti@14626 178
twisti@14626 179 void incrementq(Register reg, int value = 1);
twisti@14626 180 void incrementq(Address dst, int value = 1);
twisti@14626 181
twisti@14626 182
twisti@14626 183 // Support optimal SSE move instructions.
twisti@14626 184 void movflt(XMMRegister dst, XMMRegister src) {
twisti@14626 185 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; }
twisti@14626 186 else { movss (dst, src); return; }
twisti@14626 187 }
twisti@14626 188 void movflt(XMMRegister dst, Address src) { movss(dst, src); }
twisti@14626 189 void movflt(XMMRegister dst, AddressLiteral src);
twisti@14626 190 void movflt(Address dst, XMMRegister src) { movss(dst, src); }
twisti@14626 191
twisti@14626 192 void movdbl(XMMRegister dst, XMMRegister src) {
twisti@14626 193 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; }
twisti@14626 194 else { movsd (dst, src); return; }
twisti@14626 195 }
twisti@14626 196
twisti@14626 197 void movdbl(XMMRegister dst, AddressLiteral src);
twisti@14626 198
twisti@14626 199 void movdbl(XMMRegister dst, Address src) {
twisti@14626 200 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; }
twisti@14626 201 else { movlpd(dst, src); return; }
twisti@14626 202 }
twisti@14626 203 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); }
twisti@14626 204
twisti@14626 205 void incrementl(AddressLiteral dst);
twisti@14626 206 void incrementl(ArrayAddress dst);
twisti@14626 207
twisti@14626 208 // Alignment
twisti@14626 209 void align(int modulus);
twisti@14626 210
twisti@14626 211 // A 5 byte nop that is safe for patching (see patch_verified_entry)
twisti@14626 212 void fat_nop();
twisti@14626 213
twisti@14626 214 // Stack frame creation/removal
twisti@14626 215 void enter();
twisti@14626 216 void leave();
twisti@14626 217
twisti@14626 218 // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information)
twisti@14626 219 // The pointer will be loaded into the thread register.
twisti@14626 220 void get_thread(Register thread);
twisti@14626 221
twisti@14626 222
twisti@14626 223 // Support for VM calls
twisti@14626 224 //
twisti@14626 225 // It is imperative that all calls into the VM are handled via the call_VM macros.
twisti@14626 226 // They make sure that the stack linkage is setup correctly. call_VM's correspond
twisti@14626 227 // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points.
twisti@14626 228
twisti@14626 229
twisti@14626 230 void call_VM(Register oop_result,
twisti@14626 231 address entry_point,
twisti@14626 232 bool check_exceptions = true);
twisti@14626 233 void call_VM(Register oop_result,
twisti@14626 234 address entry_point,
twisti@14626 235 Register arg_1,
twisti@14626 236 bool check_exceptions = true);
twisti@14626 237 void call_VM(Register oop_result,
twisti@14626 238 address entry_point,
twisti@14626 239 Register arg_1, Register arg_2,
twisti@14626 240 bool check_exceptions = true);
twisti@14626 241 void call_VM(Register oop_result,
twisti@14626 242 address entry_point,
twisti@14626 243 Register arg_1, Register arg_2, Register arg_3,
twisti@14626 244 bool check_exceptions = true);
twisti@14626 245
twisti@14626 246 // Overloadings with last_Java_sp
twisti@14626 247 void call_VM(Register oop_result,
twisti@14626 248 Register last_java_sp,
twisti@14626 249 address entry_point,
twisti@14626 250 int number_of_arguments = 0,
twisti@14626 251 bool check_exceptions = true);
twisti@14626 252 void call_VM(Register oop_result,
twisti@14626 253 Register last_java_sp,
twisti@14626 254 address entry_point,
twisti@14626 255 Register arg_1, bool
twisti@14626 256 check_exceptions = true);
twisti@14626 257 void call_VM(Register oop_result,
twisti@14626 258 Register last_java_sp,
twisti@14626 259 address entry_point,
twisti@14626 260 Register arg_1, Register arg_2,
twisti@14626 261 bool check_exceptions = true);
twisti@14626 262 void call_VM(Register oop_result,
twisti@14626 263 Register last_java_sp,
twisti@14626 264 address entry_point,
twisti@14626 265 Register arg_1, Register arg_2, Register arg_3,
twisti@14626 266 bool check_exceptions = true);
twisti@14626 267
twisti@14626 268 void get_vm_result (Register oop_result, Register thread);
twisti@14626 269 void get_vm_result_2(Register metadata_result, Register thread);
twisti@14626 270
twisti@14626 271 // These always tightly bind to MacroAssembler::call_VM_base
twisti@14626 272 // bypassing the virtual implementation
twisti@14626 273 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, int number_of_arguments = 0, bool check_exceptions = true);
twisti@14626 274 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true);
twisti@14626 275 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true);
twisti@14626 276 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);
twisti@14626 277 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);
twisti@14626 278
twisti@14626 279 void call_VM_leaf(address entry_point,
twisti@14626 280 int number_of_arguments = 0);
twisti@14626 281 void call_VM_leaf(address entry_point,
twisti@14626 282 Register arg_1);
twisti@14626 283 void call_VM_leaf(address entry_point,
twisti@14626 284 Register arg_1, Register arg_2);
twisti@14626 285 void call_VM_leaf(address entry_point,
twisti@14626 286 Register arg_1, Register arg_2, Register arg_3);
twisti@14626 287
twisti@14626 288 // These always tightly bind to MacroAssembler::call_VM_leaf_base
twisti@14626 289 // bypassing the virtual implementation
twisti@14626 290 void super_call_VM_leaf(address entry_point);
twisti@14626 291 void super_call_VM_leaf(address entry_point, Register arg_1);
twisti@14626 292 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
twisti@14626 293 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
twisti@14626 294 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3, Register arg_4);
twisti@14626 295
twisti@14626 296 // last Java Frame (fills frame anchor)
twisti@14626 297 void set_last_Java_frame(Register thread,
twisti@14626 298 Register last_java_sp,
twisti@14626 299 Register last_java_fp,
twisti@14626 300 address last_java_pc);
twisti@14626 301
twisti@14626 302 // thread in the default location (r15_thread on 64bit)
twisti@14626 303 void set_last_Java_frame(Register last_java_sp,
twisti@14626 304 Register last_java_fp,
twisti@14626 305 address last_java_pc);
twisti@14626 306
twisti@14626 307 void reset_last_Java_frame(Register thread, bool clear_fp, bool clear_pc);
twisti@14626 308
twisti@14626 309 // thread in the default location (r15_thread on 64bit)
twisti@14626 310 void reset_last_Java_frame(bool clear_fp, bool clear_pc);
twisti@14626 311
twisti@14626 312 // Stores
twisti@14626 313 void store_check(Register obj); // store check for obj - register is destroyed afterwards
twisti@14626 314 void store_check(Register obj, Address dst); // same as above, dst is exact store location (reg. is destroyed)
twisti@14626 315
twisti@14626 316 #ifndef SERIALGC
twisti@14626 317
twisti@14626 318 void g1_write_barrier_pre(Register obj,
twisti@14626 319 Register pre_val,
twisti@14626 320 Register thread,
twisti@14626 321 Register tmp,
twisti@14626 322 bool tosca_live,
twisti@14626 323 bool expand_call);
twisti@14626 324
twisti@14626 325 void g1_write_barrier_post(Register store_addr,
twisti@14626 326 Register new_val,
twisti@14626 327 Register thread,
twisti@14626 328 Register tmp,
twisti@14626 329 Register tmp2);
twisti@14626 330
twisti@14626 331 #endif // SERIALGC
twisti@14626 332
twisti@14626 333 // split store_check(Register obj) to enhance instruction interleaving
twisti@14626 334 void store_check_part_1(Register obj);
twisti@14626 335 void store_check_part_2(Register obj);
twisti@14626 336
twisti@14626 337 // C 'boolean' to Java boolean: x == 0 ? 0 : 1
twisti@14626 338 void c2bool(Register x);
twisti@14626 339
twisti@14626 340 // C++ bool manipulation
twisti@14626 341
twisti@14626 342 void movbool(Register dst, Address src);
twisti@14626 343 void movbool(Address dst, bool boolconst);
twisti@14626 344 void movbool(Address dst, Register src);
twisti@14626 345 void testbool(Register dst);
twisti@14626 346
twisti@14626 347 // oop manipulations
twisti@14626 348 void load_klass(Register dst, Register src);
twisti@14626 349 void store_klass(Register dst, Register src);
twisti@14626 350
twisti@14626 351 void load_heap_oop(Register dst, Address src);
twisti@14626 352 void load_heap_oop_not_null(Register dst, Address src);
twisti@14626 353 void store_heap_oop(Address dst, Register src);
twisti@14626 354 void cmp_heap_oop(Register src1, Address src2, Register tmp = noreg);
twisti@14626 355
twisti@14626 356 // Used for storing NULL. All other oop constants should be
twisti@14626 357 // stored using routines that take a jobject.
twisti@14626 358 void store_heap_oop_null(Address dst);
twisti@14626 359
twisti@14626 360 void load_prototype_header(Register dst, Register src);
twisti@14626 361
twisti@14626 362 #ifdef _LP64
twisti@14626 363 void store_klass_gap(Register dst, Register src);
twisti@14626 364
twisti@14626 365 // This dummy is to prevent a call to store_heap_oop from
twisti@14626 366 // converting a zero (like NULL) into a Register by giving
twisti@14626 367 // the compiler two choices it can't resolve
twisti@14626 368
twisti@14626 369 void store_heap_oop(Address dst, void* dummy);
twisti@14626 370
twisti@14626 371 void encode_heap_oop(Register r);
twisti@14626 372 void decode_heap_oop(Register r);
twisti@14626 373 void encode_heap_oop_not_null(Register r);
twisti@14626 374 void decode_heap_oop_not_null(Register r);
twisti@14626 375 void encode_heap_oop_not_null(Register dst, Register src);
twisti@14626 376 void decode_heap_oop_not_null(Register dst, Register src);
twisti@14626 377
twisti@14626 378 void set_narrow_oop(Register dst, jobject obj);
twisti@14626 379 void set_narrow_oop(Address dst, jobject obj);
twisti@14626 380 void cmp_narrow_oop(Register dst, jobject obj);
twisti@14626 381 void cmp_narrow_oop(Address dst, jobject obj);
twisti@14626 382
twisti@14626 383 void encode_klass_not_null(Register r);
twisti@14626 384 void decode_klass_not_null(Register r);
twisti@14626 385 void encode_klass_not_null(Register dst, Register src);
twisti@14626 386 void decode_klass_not_null(Register dst, Register src);
twisti@14626 387 void set_narrow_klass(Register dst, Klass* k);
twisti@14626 388 void set_narrow_klass(Address dst, Klass* k);
twisti@14626 389 void cmp_narrow_klass(Register dst, Klass* k);
twisti@14626 390 void cmp_narrow_klass(Address dst, Klass* k);
twisti@14626 391
twisti@14626 392 // if heap base register is used - reinit it with the correct value
twisti@14626 393 void reinit_heapbase();
twisti@14626 394
twisti@14626 395 DEBUG_ONLY(void verify_heapbase(const char* msg);)
twisti@14626 396
twisti@14626 397 #endif // _LP64
twisti@14626 398
twisti@14626 399 // Int division/remainder for Java
twisti@14626 400 // (as idivl, but checks for special case as described in JVM spec.)
twisti@14626 401 // returns idivl instruction offset for implicit exception handling
twisti@14626 402 int corrected_idivl(Register reg);
twisti@14626 403
twisti@14626 404 // Long division/remainder for Java
twisti@14626 405 // (as idivq, but checks for special case as described in JVM spec.)
twisti@14626 406 // returns idivq instruction offset for implicit exception handling
twisti@14626 407 int corrected_idivq(Register reg);
twisti@14626 408
twisti@14626 409 void int3();
twisti@14626 410
twisti@14626 411 // Long operation macros for a 32bit cpu
twisti@14626 412 // Long negation for Java
twisti@14626 413 void lneg(Register hi, Register lo);
twisti@14626 414
twisti@14626 415 // Long multiplication for Java
twisti@14626 416 // (destroys contents of eax, ebx, ecx and edx)
twisti@14626 417 void lmul(int x_rsp_offset, int y_rsp_offset); // rdx:rax = x * y
twisti@14626 418
twisti@14626 419 // Long shifts for Java
twisti@14626 420 // (semantics as described in JVM spec.)
twisti@14626 421 void lshl(Register hi, Register lo); // hi:lo << (rcx & 0x3f)
twisti@14626 422 void lshr(Register hi, Register lo, bool sign_extension = false); // hi:lo >> (rcx & 0x3f)
twisti@14626 423
twisti@14626 424 // Long compare for Java
twisti@14626 425 // (semantics as described in JVM spec.)
twisti@14626 426 void lcmp2int(Register x_hi, Register x_lo, Register y_hi, Register y_lo); // x_hi = lcmp(x, y)
twisti@14626 427
twisti@14626 428
twisti@14626 429 // misc
twisti@14626 430
twisti@14626 431 // Sign extension
twisti@14626 432 void sign_extend_short(Register reg);
twisti@14626 433 void sign_extend_byte(Register reg);
twisti@14626 434
twisti@14626 435 // Division by power of 2, rounding towards 0
twisti@14626 436 void division_with_shift(Register reg, int shift_value);
twisti@14626 437
twisti@14626 438 // Compares the top-most stack entries on the FPU stack and sets the eflags as follows:
twisti@14626 439 //
twisti@14626 440 // CF (corresponds to C0) if x < y
twisti@14626 441 // PF (corresponds to C2) if unordered
twisti@14626 442 // ZF (corresponds to C3) if x = y
twisti@14626 443 //
twisti@14626 444 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
twisti@14626 445 // tmp is a temporary register, if none is available use noreg (only matters for non-P6 code)
twisti@14626 446 void fcmp(Register tmp);
twisti@14626 447 // Variant of the above which allows y to be further down the stack
twisti@14626 448 // and which only pops x and y if specified. If pop_right is
twisti@14626 449 // specified then pop_left must also be specified.
twisti@14626 450 void fcmp(Register tmp, int index, bool pop_left, bool pop_right);
twisti@14626 451
twisti@14626 452 // Floating-point comparison for Java
twisti@14626 453 // Compares the top-most stack entries on the FPU stack and stores the result in dst.
twisti@14626 454 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
twisti@14626 455 // (semantics as described in JVM spec.)
twisti@14626 456 void fcmp2int(Register dst, bool unordered_is_less);
twisti@14626 457 // Variant of the above which allows y to be further down the stack
twisti@14626 458 // and which only pops x and y if specified. If pop_right is
twisti@14626 459 // specified then pop_left must also be specified.
twisti@14626 460 void fcmp2int(Register dst, bool unordered_is_less, int index, bool pop_left, bool pop_right);
twisti@14626 461
twisti@14626 462 // Floating-point remainder for Java (ST0 = ST0 fremr ST1, ST1 is empty afterwards)
twisti@14626 463 // tmp is a temporary register, if none is available use noreg
twisti@14626 464 void fremr(Register tmp);
twisti@14626 465
twisti@14626 466
twisti@14626 467 // same as fcmp2int, but using SSE2
twisti@14626 468 void cmpss2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
twisti@14626 469 void cmpsd2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
twisti@14626 470
twisti@14626 471 // Inlined sin/cos generator for Java; must not use CPU instruction
twisti@14626 472 // directly on Intel as it does not have high enough precision
twisti@14626 473 // outside of the range [-pi/4, pi/4]. Extra argument indicate the
twisti@14626 474 // number of FPU stack slots in use; all but the topmost will
twisti@14626 475 // require saving if a slow case is necessary. Assumes argument is
twisti@14626 476 // on FP TOS; result is on FP TOS. No cpu registers are changed by
twisti@14626 477 // this code.
twisti@14626 478 void trigfunc(char trig, int num_fpu_regs_in_use = 1);
twisti@14626 479
twisti@14626 480 // branch to L if FPU flag C2 is set/not set
twisti@14626 481 // tmp is a temporary register, if none is available use noreg
twisti@14626 482 void jC2 (Register tmp, Label& L);
twisti@14626 483 void jnC2(Register tmp, Label& L);
twisti@14626 484
twisti@14626 485 // Pop ST (ffree & fincstp combined)
twisti@14626 486 void fpop();
twisti@14626 487
twisti@14626 488 // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack
twisti@14626 489 void push_fTOS();
twisti@14626 490
twisti@14626 491 // pops double TOS element from CPU stack and pushes on FPU stack
twisti@14626 492 void pop_fTOS();
twisti@14626 493
twisti@14626 494 void empty_FPU_stack();
twisti@14626 495
twisti@14626 496 void push_IU_state();
twisti@14626 497 void pop_IU_state();
twisti@14626 498
twisti@14626 499 void push_FPU_state();
twisti@14626 500 void pop_FPU_state();
twisti@14626 501
twisti@14626 502 void push_CPU_state();
twisti@14626 503 void pop_CPU_state();
twisti@14626 504
twisti@14626 505 // Round up to a power of two
twisti@14626 506 void round_to(Register reg, int modulus);
twisti@14626 507
twisti@14626 508 // Callee saved registers handling
twisti@14626 509 void push_callee_saved_registers();
twisti@14626 510 void pop_callee_saved_registers();
twisti@14626 511
twisti@14626 512 // allocation
twisti@14626 513 void eden_allocate(
twisti@14626 514 Register obj, // result: pointer to object after successful allocation
twisti@14626 515 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
twisti@14626 516 int con_size_in_bytes, // object size in bytes if known at compile time
twisti@14626 517 Register t1, // temp register
twisti@14626 518 Label& slow_case // continuation point if fast allocation fails
twisti@14626 519 );
twisti@14626 520 void tlab_allocate(
twisti@14626 521 Register obj, // result: pointer to object after successful allocation
twisti@14626 522 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
twisti@14626 523 int con_size_in_bytes, // object size in bytes if known at compile time
twisti@14626 524 Register t1, // temp register
twisti@14626 525 Register t2, // temp register
twisti@14626 526 Label& slow_case // continuation point if fast allocation fails
twisti@14626 527 );
twisti@14626 528 Register tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case); // returns TLS address
twisti@14626 529 void incr_allocated_bytes(Register thread,
twisti@14626 530 Register var_size_in_bytes, int con_size_in_bytes,
twisti@14626 531 Register t1 = noreg);
twisti@14626 532
twisti@14626 533 // interface method calling
twisti@14626 534 void lookup_interface_method(Register recv_klass,
twisti@14626 535 Register intf_klass,
twisti@14626 536 RegisterOrConstant itable_index,
twisti@14626 537 Register method_result,
twisti@14626 538 Register scan_temp,
twisti@14626 539 Label& no_such_interface);
twisti@14626 540
twisti@14626 541 // virtual method calling
twisti@14626 542 void lookup_virtual_method(Register recv_klass,
twisti@14626 543 RegisterOrConstant vtable_index,
twisti@14626 544 Register method_result);
twisti@14626 545
twisti@14626 546 // Test sub_klass against super_klass, with fast and slow paths.
twisti@14626 547
twisti@14626 548 // The fast path produces a tri-state answer: yes / no / maybe-slow.
twisti@14626 549 // One of the three labels can be NULL, meaning take the fall-through.
twisti@14626 550 // If super_check_offset is -1, the value is loaded up from super_klass.
twisti@14626 551 // No registers are killed, except temp_reg.
twisti@14626 552 void check_klass_subtype_fast_path(Register sub_klass,
twisti@14626 553 Register super_klass,
twisti@14626 554 Register temp_reg,
twisti@14626 555 Label* L_success,
twisti@14626 556 Label* L_failure,
twisti@14626 557 Label* L_slow_path,
twisti@14626 558 RegisterOrConstant super_check_offset = RegisterOrConstant(-1));
twisti@14626 559
twisti@14626 560 // The rest of the type check; must be wired to a corresponding fast path.
twisti@14626 561 // It does not repeat the fast path logic, so don't use it standalone.
twisti@14626 562 // The temp_reg and temp2_reg can be noreg, if no temps are available.
twisti@14626 563 // Updates the sub's secondary super cache as necessary.
twisti@14626 564 // If set_cond_codes, condition codes will be Z on success, NZ on failure.
twisti@14626 565 void check_klass_subtype_slow_path(Register sub_klass,
twisti@14626 566 Register super_klass,
twisti@14626 567 Register temp_reg,
twisti@14626 568 Register temp2_reg,
twisti@14626 569 Label* L_success,
twisti@14626 570 Label* L_failure,
twisti@14626 571 bool set_cond_codes = false);
twisti@14626 572
twisti@14626 573 // Simplified, combined version, good for typical uses.
twisti@14626 574 // Falls through on failure.
twisti@14626 575 void check_klass_subtype(Register sub_klass,
twisti@14626 576 Register super_klass,
twisti@14626 577 Register temp_reg,
twisti@14626 578 Label& L_success);
twisti@14626 579
twisti@14626 580 // method handles (JSR 292)
twisti@14626 581 Address argument_address(RegisterOrConstant arg_slot, int extra_slot_offset = 0);
twisti@14626 582
twisti@14626 583 //----
twisti@14626 584 void set_word_if_not_zero(Register reg); // sets reg to 1 if not zero, otherwise 0
twisti@14626 585
twisti@14626 586 // Debugging
twisti@14626 587
twisti@14626 588 // only if +VerifyOops
twisti@14626 589 // TODO: Make these macros with file and line like sparc version!
twisti@14626 590 void verify_oop(Register reg, const char* s = "broken oop");
twisti@14626 591 void verify_oop_addr(Address addr, const char * s = "broken oop addr");
twisti@14626 592
twisti@14626 593 // TODO: verify method and klass metadata (compare against vptr?)
twisti@14626 594 void _verify_method_ptr(Register reg, const char * msg, const char * file, int line) {}
twisti@14626 595 void _verify_klass_ptr(Register reg, const char * msg, const char * file, int line){}
twisti@14626 596
twisti@14626 597 #define verify_method_ptr(reg) _verify_method_ptr(reg, "broken method " #reg, __FILE__, __LINE__)
twisti@14626 598 #define verify_klass_ptr(reg) _verify_klass_ptr(reg, "broken klass " #reg, __FILE__, __LINE__)
twisti@14626 599
twisti@14626 600 // only if +VerifyFPU
twisti@14626 601 void verify_FPU(int stack_depth, const char* s = "illegal FPU state");
twisti@14626 602
twisti@14626 603 // prints msg, dumps registers and stops execution
twisti@14626 604 void stop(const char* msg);
twisti@14626 605
twisti@14626 606 // prints msg and continues
twisti@14626 607 void warn(const char* msg);
twisti@14626 608
twisti@14626 609 // dumps registers and other state
twisti@14626 610 void print_state();
twisti@14626 611
twisti@14626 612 static void debug32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip, char* msg);
twisti@14626 613 static void debug64(char* msg, int64_t pc, int64_t regs[]);
twisti@14626 614 static void print_state32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip);
twisti@14626 615 static void print_state64(int64_t pc, int64_t regs[]);
twisti@14626 616
twisti@14626 617 void os_breakpoint();
twisti@14626 618
twisti@14626 619 void untested() { stop("untested"); }
twisti@14626 620
twisti@14626 621 void unimplemented(const char* what = "") { char* b = new char[1024]; jio_snprintf(b, 1024, "unimplemented: %s", what); stop(b); }
twisti@14626 622
twisti@14626 623 void should_not_reach_here() { stop("should not reach here"); }
twisti@14626 624
twisti@14626 625 void print_CPU_state();
twisti@14626 626
twisti@14626 627 // Stack overflow checking
twisti@14626 628 void bang_stack_with_offset(int offset) {
twisti@14626 629 // stack grows down, caller passes positive offset
twisti@14626 630 assert(offset > 0, "must bang with negative offset");
twisti@14626 631 movl(Address(rsp, (-offset)), rax);
twisti@14626 632 }
twisti@14626 633
twisti@14626 634 // Writes to stack successive pages until offset reached to check for
twisti@14626 635 // stack overflow + shadow pages. Also, clobbers tmp
twisti@14626 636 void bang_stack_size(Register size, Register tmp);
twisti@14626 637
twisti@14626 638 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
twisti@14626 639 Register tmp,
twisti@14626 640 int offset);
twisti@14626 641
twisti@14626 642 // Support for serializing memory accesses between threads
twisti@14626 643 void serialize_memory(Register thread, Register tmp);
twisti@14626 644
twisti@14626 645 void verify_tlab();
twisti@14626 646
twisti@14626 647 // Biased locking support
twisti@14626 648 // lock_reg and obj_reg must be loaded up with the appropriate values.
twisti@14626 649 // swap_reg must be rax, and is killed.
twisti@14626 650 // tmp_reg is optional. If it is supplied (i.e., != noreg) it will
twisti@14626 651 // be killed; if not supplied, push/pop will be used internally to
twisti@14626 652 // allocate a temporary (inefficient, avoid if possible).
twisti@14626 653 // Optional slow case is for implementations (interpreter and C1) which branch to
twisti@14626 654 // slow case directly. Leaves condition codes set for C2's Fast_Lock node.
twisti@14626 655 // Returns offset of first potentially-faulting instruction for null
twisti@14626 656 // check info (currently consumed only by C1). If
twisti@14626 657 // swap_reg_contains_mark is true then returns -1 as it is assumed
twisti@14626 658 // the calling code has already passed any potential faults.
twisti@14626 659 int biased_locking_enter(Register lock_reg, Register obj_reg,
twisti@14626 660 Register swap_reg, Register tmp_reg,
twisti@14626 661 bool swap_reg_contains_mark,
twisti@14626 662 Label& done, Label* slow_case = NULL,
twisti@14626 663 BiasedLockingCounters* counters = NULL);
twisti@14626 664 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done);
twisti@14626 665
twisti@14626 666
twisti@14626 667 Condition negate_condition(Condition cond);
twisti@14626 668
twisti@14626 669 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit
twisti@14626 670 // operands. In general the names are modified to avoid hiding the instruction in Assembler
twisti@14626 671 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers
twisti@14626 672 // here in MacroAssembler. The major exception to this rule is call
twisti@14626 673
twisti@14626 674 // Arithmetics
twisti@14626 675
twisti@14626 676
twisti@14626 677 void addptr(Address dst, int32_t src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)) ; }
twisti@14626 678 void addptr(Address dst, Register src);
twisti@14626 679
twisti@14626 680 void addptr(Register dst, Address src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)); }
twisti@14626 681 void addptr(Register dst, int32_t src);
twisti@14626 682 void addptr(Register dst, Register src);
twisti@14626 683 void addptr(Register dst, RegisterOrConstant src) {
twisti@14626 684 if (src.is_constant()) addptr(dst, (int) src.as_constant());
twisti@14626 685 else addptr(dst, src.as_register());
twisti@14626 686 }
twisti@14626 687
twisti@14626 688 void andptr(Register dst, int32_t src);
twisti@14626 689 void andptr(Register src1, Register src2) { LP64_ONLY(andq(src1, src2)) NOT_LP64(andl(src1, src2)) ; }
twisti@14626 690
twisti@14626 691 void cmp8(AddressLiteral src1, int imm);
twisti@14626 692
twisti@14626 693 // renamed to drag out the casting of address to int32_t/intptr_t
twisti@14626 694 void cmp32(Register src1, int32_t imm);
twisti@14626 695
twisti@14626 696 void cmp32(AddressLiteral src1, int32_t imm);
twisti@14626 697 // compare reg - mem, or reg - &mem
twisti@14626 698 void cmp32(Register src1, AddressLiteral src2);
twisti@14626 699
twisti@14626 700 void cmp32(Register src1, Address src2);
twisti@14626 701
twisti@14626 702 #ifndef _LP64
twisti@14626 703 void cmpklass(Address dst, Metadata* obj);
twisti@14626 704 void cmpklass(Register dst, Metadata* obj);
twisti@14626 705 void cmpoop(Address dst, jobject obj);
twisti@14626 706 void cmpoop(Register dst, jobject obj);
twisti@14626 707 #endif // _LP64
twisti@14626 708
twisti@14626 709 // NOTE src2 must be the lval. This is NOT an mem-mem compare
twisti@14626 710 void cmpptr(Address src1, AddressLiteral src2);
twisti@14626 711
twisti@14626 712 void cmpptr(Register src1, AddressLiteral src2);
twisti@14626 713
twisti@14626 714 void cmpptr(Register src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
twisti@14626 715 void cmpptr(Register src1, Address src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
twisti@14626 716 // void cmpptr(Address src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
twisti@14626 717
twisti@14626 718 void cmpptr(Register src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
twisti@14626 719 void cmpptr(Address src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
twisti@14626 720
twisti@14626 721 // cmp64 to avoild hiding cmpq
twisti@14626 722 void cmp64(Register src1, AddressLiteral src);
twisti@14626 723
twisti@14626 724 void cmpxchgptr(Register reg, Address adr);
twisti@14626 725
twisti@14626 726 void locked_cmpxchgptr(Register reg, AddressLiteral adr);
twisti@14626 727
twisti@14626 728
twisti@14626 729 void imulptr(Register dst, Register src) { LP64_ONLY(imulq(dst, src)) NOT_LP64(imull(dst, src)); }
twisti@14626 730
twisti@14626 731
twisti@14626 732 void negptr(Register dst) { LP64_ONLY(negq(dst)) NOT_LP64(negl(dst)); }
twisti@14626 733
twisti@14626 734 void notptr(Register dst) { LP64_ONLY(notq(dst)) NOT_LP64(notl(dst)); }
twisti@14626 735
twisti@14626 736 void shlptr(Register dst, int32_t shift);
twisti@14626 737 void shlptr(Register dst) { LP64_ONLY(shlq(dst)) NOT_LP64(shll(dst)); }
twisti@14626 738
twisti@14626 739 void shrptr(Register dst, int32_t shift);
twisti@14626 740 void shrptr(Register dst) { LP64_ONLY(shrq(dst)) NOT_LP64(shrl(dst)); }
twisti@14626 741
twisti@14626 742 void sarptr(Register dst) { LP64_ONLY(sarq(dst)) NOT_LP64(sarl(dst)); }
twisti@14626 743 void sarptr(Register dst, int32_t src) { LP64_ONLY(sarq(dst, src)) NOT_LP64(sarl(dst, src)); }
twisti@14626 744
twisti@14626 745 void subptr(Address dst, int32_t src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
twisti@14626 746
twisti@14626 747 void subptr(Register dst, Address src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
twisti@14626 748 void subptr(Register dst, int32_t src);
twisti@14626 749 // Force generation of a 4 byte immediate value even if it fits into 8bit
twisti@14626 750 void subptr_imm32(Register dst, int32_t src);
twisti@14626 751 void subptr(Register dst, Register src);
twisti@14626 752 void subptr(Register dst, RegisterOrConstant src) {
twisti@14626 753 if (src.is_constant()) subptr(dst, (int) src.as_constant());
twisti@14626 754 else subptr(dst, src.as_register());
twisti@14626 755 }
twisti@14626 756
twisti@14626 757 void sbbptr(Address dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
twisti@14626 758 void sbbptr(Register dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
twisti@14626 759
twisti@14626 760 void xchgptr(Register src1, Register src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
twisti@14626 761 void xchgptr(Register src1, Address src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
twisti@14626 762
twisti@14626 763 void xaddptr(Address src1, Register src2) { LP64_ONLY(xaddq(src1, src2)) NOT_LP64(xaddl(src1, src2)) ; }
twisti@14626 764
twisti@14626 765
twisti@14626 766
twisti@14626 767 // Helper functions for statistics gathering.
twisti@14626 768 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes.
twisti@14626 769 void cond_inc32(Condition cond, AddressLiteral counter_addr);
twisti@14626 770 // Unconditional atomic increment.
twisti@14626 771 void atomic_incl(AddressLiteral counter_addr);
twisti@14626 772
twisti@14626 773 void lea(Register dst, AddressLiteral adr);
twisti@14626 774 void lea(Address dst, AddressLiteral adr);
twisti@14626 775 void lea(Register dst, Address adr) { Assembler::lea(dst, adr); }
twisti@14626 776
twisti@14626 777 void leal32(Register dst, Address src) { leal(dst, src); }
twisti@14626 778
twisti@14626 779 // Import other testl() methods from the parent class or else
twisti@14626 780 // they will be hidden by the following overriding declaration.
twisti@14626 781 using Assembler::testl;
twisti@14626 782 void testl(Register dst, AddressLiteral src);
twisti@14626 783
twisti@14626 784 void orptr(Register dst, Address src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
twisti@14626 785 void orptr(Register dst, Register src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
twisti@14626 786 void orptr(Register dst, int32_t src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
twisti@14626 787
twisti@14626 788 void testptr(Register src, int32_t imm32) { LP64_ONLY(testq(src, imm32)) NOT_LP64(testl(src, imm32)); }
twisti@14626 789 void testptr(Register src1, Register src2);
twisti@14626 790
twisti@14626 791 void xorptr(Register dst, Register src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
twisti@14626 792 void xorptr(Register dst, Address src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
twisti@14626 793
twisti@14626 794 // Calls
twisti@14626 795
twisti@14626 796 void call(Label& L, relocInfo::relocType rtype);
twisti@14626 797 void call(Register entry);
twisti@14626 798
twisti@14626 799 // NOTE: this call tranfers to the effective address of entry NOT
twisti@14626 800 // the address contained by entry. This is because this is more natural
twisti@14626 801 // for jumps/calls.
twisti@14626 802 void call(AddressLiteral entry);
twisti@14626 803
twisti@14626 804 // Emit the CompiledIC call idiom
twisti@14626 805 void ic_call(address entry);
twisti@14626 806
twisti@14626 807 // Jumps
twisti@14626 808
twisti@14626 809 // NOTE: these jumps tranfer to the effective address of dst NOT
twisti@14626 810 // the address contained by dst. This is because this is more natural
twisti@14626 811 // for jumps/calls.
twisti@14626 812 void jump(AddressLiteral dst);
twisti@14626 813 void jump_cc(Condition cc, AddressLiteral dst);
twisti@14626 814
twisti@14626 815 // 32bit can do a case table jump in one instruction but we no longer allow the base
twisti@14626 816 // to be installed in the Address class. This jump will tranfers to the address
twisti@14626 817 // contained in the location described by entry (not the address of entry)
twisti@14626 818 void jump(ArrayAddress entry);
twisti@14626 819
twisti@14626 820 // Floating
twisti@14626 821
twisti@14626 822 void andpd(XMMRegister dst, Address src) { Assembler::andpd(dst, src); }
twisti@14626 823 void andpd(XMMRegister dst, AddressLiteral src);
twisti@14626 824
twisti@14626 825 void andps(XMMRegister dst, XMMRegister src) { Assembler::andps(dst, src); }
twisti@14626 826 void andps(XMMRegister dst, Address src) { Assembler::andps(dst, src); }
twisti@14626 827 void andps(XMMRegister dst, AddressLiteral src);
twisti@14626 828
twisti@14626 829 void comiss(XMMRegister dst, XMMRegister src) { Assembler::comiss(dst, src); }
twisti@14626 830 void comiss(XMMRegister dst, Address src) { Assembler::comiss(dst, src); }
twisti@14626 831 void comiss(XMMRegister dst, AddressLiteral src);
twisti@14626 832
twisti@14626 833 void comisd(XMMRegister dst, XMMRegister src) { Assembler::comisd(dst, src); }
twisti@14626 834 void comisd(XMMRegister dst, Address src) { Assembler::comisd(dst, src); }
twisti@14626 835 void comisd(XMMRegister dst, AddressLiteral src);
twisti@14626 836
twisti@14626 837 void fadd_s(Address src) { Assembler::fadd_s(src); }
twisti@14626 838 void fadd_s(AddressLiteral src) { Assembler::fadd_s(as_Address(src)); }
twisti@14626 839
twisti@14626 840 void fldcw(Address src) { Assembler::fldcw(src); }
twisti@14626 841 void fldcw(AddressLiteral src);
twisti@14626 842
twisti@14626 843 void fld_s(int index) { Assembler::fld_s(index); }
twisti@14626 844 void fld_s(Address src) { Assembler::fld_s(src); }
twisti@14626 845 void fld_s(AddressLiteral src);
twisti@14626 846
twisti@14626 847 void fld_d(Address src) { Assembler::fld_d(src); }
twisti@14626 848 void fld_d(AddressLiteral src);
twisti@14626 849
twisti@14626 850 void fld_x(Address src) { Assembler::fld_x(src); }
twisti@14626 851 void fld_x(AddressLiteral src);
twisti@14626 852
twisti@14626 853 void fmul_s(Address src) { Assembler::fmul_s(src); }
twisti@14626 854 void fmul_s(AddressLiteral src) { Assembler::fmul_s(as_Address(src)); }
twisti@14626 855
twisti@14626 856 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); }
twisti@14626 857 void ldmxcsr(AddressLiteral src);
twisti@14626 858
twisti@14626 859 // compute pow(x,y) and exp(x) with x86 instructions. Don't cover
twisti@14626 860 // all corner cases and may result in NaN and require fallback to a
twisti@14626 861 // runtime call.
twisti@14626 862 void fast_pow();
twisti@14626 863 void fast_exp();
twisti@14626 864 void increase_precision();
twisti@14626 865 void restore_precision();
twisti@14626 866
twisti@14626 867 // computes exp(x). Fallback to runtime call included.
twisti@14626 868 void exp_with_fallback(int num_fpu_regs_in_use) { pow_or_exp(true, num_fpu_regs_in_use); }
twisti@14626 869 // computes pow(x,y). Fallback to runtime call included.
twisti@14626 870 void pow_with_fallback(int num_fpu_regs_in_use) { pow_or_exp(false, num_fpu_regs_in_use); }
twisti@14626 871
twisti@14626 872 private:
twisti@14626 873
twisti@14626 874 // call runtime as a fallback for trig functions and pow/exp.
twisti@14626 875 void fp_runtime_fallback(address runtime_entry, int nb_args, int num_fpu_regs_in_use);
twisti@14626 876
twisti@14626 877 // computes 2^(Ylog2X); Ylog2X in ST(0)
twisti@14626 878 void pow_exp_core_encoding();
twisti@14626 879
twisti@14626 880 // computes pow(x,y) or exp(x). Fallback to runtime call included.
twisti@14626 881 void pow_or_exp(bool is_exp, int num_fpu_regs_in_use);
twisti@14626 882
twisti@14626 883 // these are private because users should be doing movflt/movdbl
twisti@14626 884
twisti@14626 885 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); }
twisti@14626 886 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); }
twisti@14626 887 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); }
twisti@14626 888 void movss(XMMRegister dst, AddressLiteral src);
twisti@14626 889
twisti@14626 890 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); }
twisti@14626 891 void movlpd(XMMRegister dst, AddressLiteral src);
twisti@14626 892
twisti@14626 893 public:
twisti@14626 894
twisti@14626 895 void addsd(XMMRegister dst, XMMRegister src) { Assembler::addsd(dst, src); }
twisti@14626 896 void addsd(XMMRegister dst, Address src) { Assembler::addsd(dst, src); }
twisti@14626 897 void addsd(XMMRegister dst, AddressLiteral src);
twisti@14626 898
twisti@14626 899 void addss(XMMRegister dst, XMMRegister src) { Assembler::addss(dst, src); }
twisti@14626 900 void addss(XMMRegister dst, Address src) { Assembler::addss(dst, src); }
twisti@14626 901 void addss(XMMRegister dst, AddressLiteral src);
twisti@14626 902
twisti@14626 903 void divsd(XMMRegister dst, XMMRegister src) { Assembler::divsd(dst, src); }
twisti@14626 904 void divsd(XMMRegister dst, Address src) { Assembler::divsd(dst, src); }
twisti@14626 905 void divsd(XMMRegister dst, AddressLiteral src);
twisti@14626 906
twisti@14626 907 void divss(XMMRegister dst, XMMRegister src) { Assembler::divss(dst, src); }
twisti@14626 908 void divss(XMMRegister dst, Address src) { Assembler::divss(dst, src); }
twisti@14626 909 void divss(XMMRegister dst, AddressLiteral src);
twisti@14626 910
twisti@14626 911 // Move Unaligned Double Quadword
twisti@14626 912 void movdqu(Address dst, XMMRegister src) { Assembler::movdqu(dst, src); }
twisti@14626 913 void movdqu(XMMRegister dst, Address src) { Assembler::movdqu(dst, src); }
twisti@14626 914 void movdqu(XMMRegister dst, XMMRegister src) { Assembler::movdqu(dst, src); }
twisti@14626 915 void movdqu(XMMRegister dst, AddressLiteral src);
twisti@14626 916
twisti@14626 917 void movsd(XMMRegister dst, XMMRegister src) { Assembler::movsd(dst, src); }
twisti@14626 918 void movsd(Address dst, XMMRegister src) { Assembler::movsd(dst, src); }
twisti@14626 919 void movsd(XMMRegister dst, Address src) { Assembler::movsd(dst, src); }
twisti@14626 920 void movsd(XMMRegister dst, AddressLiteral src);
twisti@14626 921
twisti@14626 922 void mulsd(XMMRegister dst, XMMRegister src) { Assembler::mulsd(dst, src); }
twisti@14626 923 void mulsd(XMMRegister dst, Address src) { Assembler::mulsd(dst, src); }
twisti@14626 924 void mulsd(XMMRegister dst, AddressLiteral src);
twisti@14626 925
twisti@14626 926 void mulss(XMMRegister dst, XMMRegister src) { Assembler::mulss(dst, src); }
twisti@14626 927 void mulss(XMMRegister dst, Address src) { Assembler::mulss(dst, src); }
twisti@14626 928 void mulss(XMMRegister dst, AddressLiteral src);
twisti@14626 929
twisti@14626 930 void sqrtsd(XMMRegister dst, XMMRegister src) { Assembler::sqrtsd(dst, src); }
twisti@14626 931 void sqrtsd(XMMRegister dst, Address src) { Assembler::sqrtsd(dst, src); }
twisti@14626 932 void sqrtsd(XMMRegister dst, AddressLiteral src);
twisti@14626 933
twisti@14626 934 void sqrtss(XMMRegister dst, XMMRegister src) { Assembler::sqrtss(dst, src); }
twisti@14626 935 void sqrtss(XMMRegister dst, Address src) { Assembler::sqrtss(dst, src); }
twisti@14626 936 void sqrtss(XMMRegister dst, AddressLiteral src);
twisti@14626 937
twisti@14626 938 void subsd(XMMRegister dst, XMMRegister src) { Assembler::subsd(dst, src); }
twisti@14626 939 void subsd(XMMRegister dst, Address src) { Assembler::subsd(dst, src); }
twisti@14626 940 void subsd(XMMRegister dst, AddressLiteral src);
twisti@14626 941
twisti@14626 942 void subss(XMMRegister dst, XMMRegister src) { Assembler::subss(dst, src); }
twisti@14626 943 void subss(XMMRegister dst, Address src) { Assembler::subss(dst, src); }
twisti@14626 944 void subss(XMMRegister dst, AddressLiteral src);
twisti@14626 945
twisti@14626 946 void ucomiss(XMMRegister dst, XMMRegister src) { Assembler::ucomiss(dst, src); }
twisti@14626 947 void ucomiss(XMMRegister dst, Address src) { Assembler::ucomiss(dst, src); }
twisti@14626 948 void ucomiss(XMMRegister dst, AddressLiteral src);
twisti@14626 949
twisti@14626 950 void ucomisd(XMMRegister dst, XMMRegister src) { Assembler::ucomisd(dst, src); }
twisti@14626 951 void ucomisd(XMMRegister dst, Address src) { Assembler::ucomisd(dst, src); }
twisti@14626 952 void ucomisd(XMMRegister dst, AddressLiteral src);
twisti@14626 953
twisti@14626 954 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
twisti@14626 955 void xorpd(XMMRegister dst, XMMRegister src) { Assembler::xorpd(dst, src); }
twisti@14626 956 void xorpd(XMMRegister dst, Address src) { Assembler::xorpd(dst, src); }
twisti@14626 957 void xorpd(XMMRegister dst, AddressLiteral src);
twisti@14626 958
twisti@14626 959 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
twisti@14626 960 void xorps(XMMRegister dst, XMMRegister src) { Assembler::xorps(dst, src); }
twisti@14626 961 void xorps(XMMRegister dst, Address src) { Assembler::xorps(dst, src); }
twisti@14626 962 void xorps(XMMRegister dst, AddressLiteral src);
twisti@14626 963
twisti@14626 964 // Shuffle Bytes
twisti@14626 965 void pshufb(XMMRegister dst, XMMRegister src) { Assembler::pshufb(dst, src); }
twisti@14626 966 void pshufb(XMMRegister dst, Address src) { Assembler::pshufb(dst, src); }
twisti@14626 967 void pshufb(XMMRegister dst, AddressLiteral src);
twisti@14626 968 // AVX 3-operands instructions
twisti@14626 969
twisti@14626 970 void vaddsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddsd(dst, nds, src); }
twisti@14626 971 void vaddsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vaddsd(dst, nds, src); }
twisti@14626 972 void vaddsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 973
twisti@14626 974 void vaddss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddss(dst, nds, src); }
twisti@14626 975 void vaddss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vaddss(dst, nds, src); }
twisti@14626 976 void vaddss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 977
twisti@14626 978 void vandpd(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vandpd(dst, nds, src, vector256); }
twisti@14626 979 void vandpd(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vandpd(dst, nds, src, vector256); }
twisti@14626 980 void vandpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256);
twisti@14626 981
twisti@14626 982 void vandps(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vandps(dst, nds, src, vector256); }
twisti@14626 983 void vandps(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vandps(dst, nds, src, vector256); }
twisti@14626 984 void vandps(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256);
twisti@14626 985
twisti@14626 986 void vdivsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivsd(dst, nds, src); }
twisti@14626 987 void vdivsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vdivsd(dst, nds, src); }
twisti@14626 988 void vdivsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 989
twisti@14626 990 void vdivss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivss(dst, nds, src); }
twisti@14626 991 void vdivss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vdivss(dst, nds, src); }
twisti@14626 992 void vdivss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 993
twisti@14626 994 void vmulsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulsd(dst, nds, src); }
twisti@14626 995 void vmulsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vmulsd(dst, nds, src); }
twisti@14626 996 void vmulsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 997
twisti@14626 998 void vmulss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulss(dst, nds, src); }
twisti@14626 999 void vmulss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vmulss(dst, nds, src); }
twisti@14626 1000 void vmulss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 1001
twisti@14626 1002 void vsubsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubsd(dst, nds, src); }
twisti@14626 1003 void vsubsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vsubsd(dst, nds, src); }
twisti@14626 1004 void vsubsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 1005
twisti@14626 1006 void vsubss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubss(dst, nds, src); }
twisti@14626 1007 void vsubss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vsubss(dst, nds, src); }
twisti@14626 1008 void vsubss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
twisti@14626 1009
twisti@14626 1010 // AVX Vector instructions
twisti@14626 1011
twisti@14626 1012 void vxorpd(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vxorpd(dst, nds, src, vector256); }
twisti@14626 1013 void vxorpd(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vxorpd(dst, nds, src, vector256); }
twisti@14626 1014 void vxorpd(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256);
twisti@14626 1015
twisti@14626 1016 void vxorps(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) { Assembler::vxorps(dst, nds, src, vector256); }
twisti@14626 1017 void vxorps(XMMRegister dst, XMMRegister nds, Address src, bool vector256) { Assembler::vxorps(dst, nds, src, vector256); }
twisti@14626 1018 void vxorps(XMMRegister dst, XMMRegister nds, AddressLiteral src, bool vector256);
twisti@14626 1019
twisti@14626 1020 void vpxor(XMMRegister dst, XMMRegister nds, XMMRegister src, bool vector256) {
twisti@14626 1021 if (UseAVX > 1 || !vector256) // vpxor 256 bit is available only in AVX2
twisti@14626 1022 Assembler::vpxor(dst, nds, src, vector256);
twisti@14626 1023 else
twisti@14626 1024 Assembler::vxorpd(dst, nds, src, vector256);
twisti@14626 1025 }
twisti@14626 1026 void vpxor(XMMRegister dst, XMMRegister nds, Address src, bool vector256) {
twisti@14626 1027 if (UseAVX > 1 || !vector256) // vpxor 256 bit is available only in AVX2
twisti@14626 1028 Assembler::vpxor(dst, nds, src, vector256);
twisti@14626 1029 else
twisti@14626 1030 Assembler::vxorpd(dst, nds, src, vector256);
twisti@14626 1031 }
twisti@14626 1032
twisti@14626 1033 // Move packed integer values from low 128 bit to hign 128 bit in 256 bit vector.
twisti@14626 1034 void vinserti128h(XMMRegister dst, XMMRegister nds, XMMRegister src) {
twisti@14626 1035 if (UseAVX > 1) // vinserti128h is available only in AVX2
twisti@14626 1036 Assembler::vinserti128h(dst, nds, src);
twisti@14626 1037 else
twisti@14626 1038 Assembler::vinsertf128h(dst, nds, src);
twisti@14626 1039 }
twisti@14626 1040
twisti@14626 1041 // Data
twisti@14626 1042
twisti@14626 1043 void cmov32( Condition cc, Register dst, Address src);
twisti@14626 1044 void cmov32( Condition cc, Register dst, Register src);
twisti@14626 1045
twisti@14626 1046 void cmov( Condition cc, Register dst, Register src) { cmovptr(cc, dst, src); }
twisti@14626 1047
twisti@14626 1048 void cmovptr(Condition cc, Register dst, Address src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); }
twisti@14626 1049 void cmovptr(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); }
twisti@14626 1050
twisti@14626 1051 void movoop(Register dst, jobject obj);
twisti@14626 1052 void movoop(Address dst, jobject obj);
twisti@14626 1053
twisti@14626 1054 void mov_metadata(Register dst, Metadata* obj);
twisti@14626 1055 void mov_metadata(Address dst, Metadata* obj);
twisti@14626 1056
twisti@14626 1057 void movptr(ArrayAddress dst, Register src);
twisti@14626 1058 // can this do an lea?
twisti@14626 1059 void movptr(Register dst, ArrayAddress src);
twisti@14626 1060
twisti@14626 1061 void movptr(Register dst, Address src);
twisti@14626 1062
twisti@14626 1063 void movptr(Register dst, AddressLiteral src);
twisti@14626 1064
twisti@14626 1065 void movptr(Register dst, intptr_t src);
twisti@14626 1066 void movptr(Register dst, Register src);
twisti@14626 1067 void movptr(Address dst, intptr_t src);
twisti@14626 1068
twisti@14626 1069 void movptr(Address dst, Register src);
twisti@14626 1070
twisti@14626 1071 void movptr(Register dst, RegisterOrConstant src) {
twisti@14626 1072 if (src.is_constant()) movptr(dst, src.as_constant());
twisti@14626 1073 else movptr(dst, src.as_register());
twisti@14626 1074 }
twisti@14626 1075
twisti@14626 1076 #ifdef _LP64
twisti@14626 1077 // Generally the next two are only used for moving NULL
twisti@14626 1078 // Although there are situations in initializing the mark word where
twisti@14626 1079 // they could be used. They are dangerous.
twisti@14626 1080
twisti@14626 1081 // They only exist on LP64 so that int32_t and intptr_t are not the same
twisti@14626 1082 // and we have ambiguous declarations.
twisti@14626 1083
twisti@14626 1084 void movptr(Address dst, int32_t imm32);
twisti@14626 1085 void movptr(Register dst, int32_t imm32);
twisti@14626 1086 #endif // _LP64
twisti@14626 1087
twisti@14626 1088 // to avoid hiding movl
twisti@14626 1089 void mov32(AddressLiteral dst, Register src);
twisti@14626 1090 void mov32(Register dst, AddressLiteral src);
twisti@14626 1091
twisti@14626 1092 // to avoid hiding movb
twisti@14626 1093 void movbyte(ArrayAddress dst, int src);
twisti@14626 1094
twisti@14626 1095 // Import other mov() methods from the parent class or else
twisti@14626 1096 // they will be hidden by the following overriding declaration.
twisti@14626 1097 using Assembler::movdl;
twisti@14626 1098 using Assembler::movq;
twisti@14626 1099 void movdl(XMMRegister dst, AddressLiteral src);
twisti@14626 1100 void movq(XMMRegister dst, AddressLiteral src);
twisti@14626 1101
twisti@14626 1102 // Can push value or effective address
twisti@14626 1103 void pushptr(AddressLiteral src);
twisti@14626 1104
twisti@14626 1105 void pushptr(Address src) { LP64_ONLY(pushq(src)) NOT_LP64(pushl(src)); }
twisti@14626 1106 void popptr(Address src) { LP64_ONLY(popq(src)) NOT_LP64(popl(src)); }
twisti@14626 1107
twisti@14626 1108 void pushoop(jobject obj);
twisti@14626 1109 void pushklass(Metadata* obj);
twisti@14626 1110
twisti@14626 1111 // sign extend as need a l to ptr sized element
twisti@14626 1112 void movl2ptr(Register dst, Address src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(movl(dst, src)); }
twisti@14626 1113 void movl2ptr(Register dst, Register src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(if (dst != src) movl(dst, src)); }
twisti@14626 1114
twisti@14626 1115 // C2 compiled method's prolog code.
twisti@14626 1116 void verified_entry(int framesize, bool stack_bang, bool fp_mode_24b);
twisti@14626 1117
twisti@14626 1118 // IndexOf strings.
twisti@14626 1119 // Small strings are loaded through stack if they cross page boundary.
twisti@14626 1120 void string_indexof(Register str1, Register str2,
twisti@14626 1121 Register cnt1, Register cnt2,
twisti@14626 1122 int int_cnt2, Register result,
twisti@14626 1123 XMMRegister vec, Register tmp);
twisti@14626 1124
twisti@14626 1125 // IndexOf for constant substrings with size >= 8 elements
twisti@14626 1126 // which don't need to be loaded through stack.
twisti@14626 1127 void string_indexofC8(Register str1, Register str2,
twisti@14626 1128 Register cnt1, Register cnt2,
twisti@14626 1129 int int_cnt2, Register result,
twisti@14626 1130 XMMRegister vec, Register tmp);
twisti@14626 1131
twisti@14626 1132 // Smallest code: we don't need to load through stack,
twisti@14626 1133 // check string tail.
twisti@14626 1134
twisti@14626 1135 // Compare strings.
twisti@14626 1136 void string_compare(Register str1, Register str2,
twisti@14626 1137 Register cnt1, Register cnt2, Register result,
twisti@14626 1138 XMMRegister vec1);
twisti@14626 1139
twisti@14626 1140 // Compare char[] arrays.
twisti@14626 1141 void char_arrays_equals(bool is_array_equ, Register ary1, Register ary2,
twisti@14626 1142 Register limit, Register result, Register chr,
twisti@14626 1143 XMMRegister vec1, XMMRegister vec2);
twisti@14626 1144
twisti@14626 1145 // Fill primitive arrays
twisti@14626 1146 void generate_fill(BasicType t, bool aligned,
twisti@14626 1147 Register to, Register value, Register count,
twisti@14626 1148 Register rtmp, XMMRegister xtmp);
twisti@14626 1149
twisti@14626 1150 #undef VIRTUAL
twisti@14626 1151
twisti@14626 1152 };
twisti@14626 1153
twisti@14626 1154 /**
twisti@14626 1155 * class SkipIfEqual:
twisti@14626 1156 *
twisti@14626 1157 * Instantiating this class will result in assembly code being output that will
twisti@14626 1158 * jump around any code emitted between the creation of the instance and it's
twisti@14626 1159 * automatic destruction at the end of a scope block, depending on the value of
twisti@14626 1160 * the flag passed to the constructor, which will be checked at run-time.
twisti@14626 1161 */
twisti@14626 1162 class SkipIfEqual {
twisti@14626 1163 private:
twisti@14626 1164 MacroAssembler* _masm;
twisti@14626 1165 Label _label;
twisti@14626 1166
twisti@14626 1167 public:
twisti@14626 1168 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value);
twisti@14626 1169 ~SkipIfEqual();
twisti@14626 1170 };
twisti@14626 1171
twisti@14626 1172 #endif // CPU_X86_VM_MACROASSEMBLER_X86_HPP