Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #if V8_TARGET_ARCH_IA32 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/base/bits.h" |
| 8 | #include "src/base/division-by-constant.h" |
| 9 | #include "src/bootstrapper.h" |
| 10 | #include "src/codegen.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 11 | #include "src/debug/debug.h" |
| 12 | #include "src/ia32/frames-ia32.h" |
| 13 | #include "src/ia32/macro-assembler-ia32.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 14 | #include "src/runtime/runtime.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 15 | |
| 16 | namespace v8 { |
| 17 | namespace internal { |
| 18 | |
| 19 | // ------------------------------------------------------------------------- |
| 20 | // MacroAssembler implementation. |
| 21 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 22 | MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size, |
| 23 | CodeObjectRequired create_code_object) |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 24 | : Assembler(arg_isolate, buffer, size), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 25 | generating_stub_(false), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 26 | has_frame_(false) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 27 | if (create_code_object == CodeObjectRequired::kYes) { |
| 28 | code_object_ = |
| 29 | Handle<Object>::New(isolate()->heap()->undefined_value(), isolate()); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 30 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 34 | void MacroAssembler::Load(Register dst, const Operand& src, Representation r) { |
| 35 | DCHECK(!r.IsDouble()); |
| 36 | if (r.IsInteger8()) { |
| 37 | movsx_b(dst, src); |
| 38 | } else if (r.IsUInteger8()) { |
| 39 | movzx_b(dst, src); |
| 40 | } else if (r.IsInteger16()) { |
| 41 | movsx_w(dst, src); |
| 42 | } else if (r.IsUInteger16()) { |
| 43 | movzx_w(dst, src); |
| 44 | } else { |
| 45 | mov(dst, src); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | |
| 50 | void MacroAssembler::Store(Register src, const Operand& dst, Representation r) { |
| 51 | DCHECK(!r.IsDouble()); |
| 52 | if (r.IsInteger8() || r.IsUInteger8()) { |
| 53 | mov_b(dst, src); |
| 54 | } else if (r.IsInteger16() || r.IsUInteger16()) { |
| 55 | mov_w(dst, src); |
| 56 | } else { |
| 57 | if (r.IsHeapObject()) { |
| 58 | AssertNotSmi(src); |
| 59 | } else if (r.IsSmi()) { |
| 60 | AssertSmi(src); |
| 61 | } |
| 62 | mov(dst, src); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | |
| 67 | void MacroAssembler::LoadRoot(Register destination, Heap::RootListIndex index) { |
| 68 | if (isolate()->heap()->RootCanBeTreatedAsConstant(index)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 69 | mov(destination, isolate()->heap()->root_handle(index)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 70 | return; |
| 71 | } |
| 72 | ExternalReference roots_array_start = |
| 73 | ExternalReference::roots_array_start(isolate()); |
| 74 | mov(destination, Immediate(index)); |
| 75 | mov(destination, Operand::StaticArray(destination, |
| 76 | times_pointer_size, |
| 77 | roots_array_start)); |
| 78 | } |
| 79 | |
| 80 | |
| 81 | void MacroAssembler::StoreRoot(Register source, |
| 82 | Register scratch, |
| 83 | Heap::RootListIndex index) { |
| 84 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
| 85 | ExternalReference roots_array_start = |
| 86 | ExternalReference::roots_array_start(isolate()); |
| 87 | mov(scratch, Immediate(index)); |
| 88 | mov(Operand::StaticArray(scratch, times_pointer_size, roots_array_start), |
| 89 | source); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | void MacroAssembler::CompareRoot(Register with, |
| 94 | Register scratch, |
| 95 | Heap::RootListIndex index) { |
| 96 | ExternalReference roots_array_start = |
| 97 | ExternalReference::roots_array_start(isolate()); |
| 98 | mov(scratch, Immediate(index)); |
| 99 | cmp(with, Operand::StaticArray(scratch, |
| 100 | times_pointer_size, |
| 101 | roots_array_start)); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | void MacroAssembler::CompareRoot(Register with, Heap::RootListIndex index) { |
| 106 | DCHECK(isolate()->heap()->RootCanBeTreatedAsConstant(index)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 107 | cmp(with, isolate()->heap()->root_handle(index)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | |
| 111 | void MacroAssembler::CompareRoot(const Operand& with, |
| 112 | Heap::RootListIndex index) { |
| 113 | DCHECK(isolate()->heap()->RootCanBeTreatedAsConstant(index)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 114 | cmp(with, isolate()->heap()->root_handle(index)); |
| 115 | } |
| 116 | |
| 117 | |
| 118 | void MacroAssembler::PushRoot(Heap::RootListIndex index) { |
| 119 | DCHECK(isolate()->heap()->RootCanBeTreatedAsConstant(index)); |
| 120 | Push(isolate()->heap()->root_handle(index)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 124 | void MacroAssembler::InNewSpace( |
| 125 | Register object, |
| 126 | Register scratch, |
| 127 | Condition cc, |
| 128 | Label* condition_met, |
| 129 | Label::Distance condition_met_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 130 | DCHECK(cc == equal || cc == not_equal); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 131 | if (scratch.is(object)) { |
| 132 | and_(scratch, Immediate(~Page::kPageAlignmentMask)); |
| 133 | } else { |
| 134 | mov(scratch, Immediate(~Page::kPageAlignmentMask)); |
| 135 | and_(scratch, object); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 136 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 137 | // Check that we can use a test_b. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 138 | DCHECK(MemoryChunk::IN_FROM_SPACE < 8); |
| 139 | DCHECK(MemoryChunk::IN_TO_SPACE < 8); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 140 | int mask = (1 << MemoryChunk::IN_FROM_SPACE) |
| 141 | | (1 << MemoryChunk::IN_TO_SPACE); |
| 142 | // If non-zero, the page belongs to new-space. |
| 143 | test_b(Operand(scratch, MemoryChunk::kFlagsOffset), |
| 144 | static_cast<uint8_t>(mask)); |
| 145 | j(cc, condition_met, condition_met_distance); |
| 146 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 147 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 148 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 149 | void MacroAssembler::RememberedSetHelper( |
| 150 | Register object, // Only used for debug checks. |
| 151 | Register addr, |
| 152 | Register scratch, |
| 153 | SaveFPRegsMode save_fp, |
| 154 | MacroAssembler::RememberedSetFinalAction and_then) { |
| 155 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 156 | if (emit_debug_code()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 157 | Label ok; |
| 158 | JumpIfNotInNewSpace(object, scratch, &ok, Label::kNear); |
| 159 | int3(); |
| 160 | bind(&ok); |
| 161 | } |
| 162 | // Load store buffer top. |
| 163 | ExternalReference store_buffer = |
| 164 | ExternalReference::store_buffer_top(isolate()); |
| 165 | mov(scratch, Operand::StaticVariable(store_buffer)); |
| 166 | // Store pointer to buffer. |
| 167 | mov(Operand(scratch, 0), addr); |
| 168 | // Increment buffer top. |
| 169 | add(scratch, Immediate(kPointerSize)); |
| 170 | // Write back new top of buffer. |
| 171 | mov(Operand::StaticVariable(store_buffer), scratch); |
| 172 | // Call stub on end of buffer. |
| 173 | // Check for end of buffer. |
| 174 | test(scratch, Immediate(StoreBuffer::kStoreBufferOverflowBit)); |
| 175 | if (and_then == kReturnAtEnd) { |
| 176 | Label buffer_overflowed; |
| 177 | j(not_equal, &buffer_overflowed, Label::kNear); |
| 178 | ret(0); |
| 179 | bind(&buffer_overflowed); |
| 180 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 181 | DCHECK(and_then == kFallThroughAtEnd); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 182 | j(equal, &done, Label::kNear); |
| 183 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 184 | StoreBufferOverflowStub store_buffer_overflow(isolate(), save_fp); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 185 | CallStub(&store_buffer_overflow); |
| 186 | if (and_then == kReturnAtEnd) { |
| 187 | ret(0); |
| 188 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 189 | DCHECK(and_then == kFallThroughAtEnd); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 190 | bind(&done); |
| 191 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | |
| 195 | void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg, |
| 196 | XMMRegister scratch_reg, |
| 197 | Register result_reg) { |
| 198 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 199 | Label conv_failure; |
| 200 | xorps(scratch_reg, scratch_reg); |
| 201 | cvtsd2si(result_reg, input_reg); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 202 | test(result_reg, Immediate(0xFFFFFF00)); |
| 203 | j(zero, &done, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 204 | cmp(result_reg, Immediate(0x1)); |
| 205 | j(overflow, &conv_failure, Label::kNear); |
| 206 | mov(result_reg, Immediate(0)); |
| 207 | setcc(sign, result_reg); |
| 208 | sub(result_reg, Immediate(1)); |
| 209 | and_(result_reg, Immediate(255)); |
| 210 | jmp(&done, Label::kNear); |
| 211 | bind(&conv_failure); |
| 212 | Move(result_reg, Immediate(0)); |
| 213 | ucomisd(input_reg, scratch_reg); |
| 214 | j(below, &done, Label::kNear); |
| 215 | Move(result_reg, Immediate(255)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 216 | bind(&done); |
| 217 | } |
| 218 | |
| 219 | |
| 220 | void MacroAssembler::ClampUint8(Register reg) { |
| 221 | Label done; |
| 222 | test(reg, Immediate(0xFFFFFF00)); |
| 223 | j(zero, &done, Label::kNear); |
| 224 | setcc(negative, reg); // 1 if negative, 0 if positive. |
| 225 | dec_b(reg); // 0 if negative, 255 if positive. |
| 226 | bind(&done); |
| 227 | } |
| 228 | |
| 229 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 230 | void MacroAssembler::SlowTruncateToI(Register result_reg, |
| 231 | Register input_reg, |
| 232 | int offset) { |
| 233 | DoubleToIStub stub(isolate(), input_reg, result_reg, offset, true); |
| 234 | call(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 235 | } |
| 236 | |
| 237 | |
| 238 | void MacroAssembler::TruncateDoubleToI(Register result_reg, |
| 239 | XMMRegister input_reg) { |
| 240 | Label done; |
| 241 | cvttsd2si(result_reg, Operand(input_reg)); |
| 242 | cmp(result_reg, 0x1); |
| 243 | j(no_overflow, &done, Label::kNear); |
| 244 | |
| 245 | sub(esp, Immediate(kDoubleSize)); |
| 246 | movsd(MemOperand(esp, 0), input_reg); |
| 247 | SlowTruncateToI(result_reg, esp, 0); |
| 248 | add(esp, Immediate(kDoubleSize)); |
| 249 | bind(&done); |
| 250 | } |
| 251 | |
| 252 | |
| 253 | void MacroAssembler::DoubleToI(Register result_reg, XMMRegister input_reg, |
| 254 | XMMRegister scratch, |
| 255 | MinusZeroMode minus_zero_mode, |
| 256 | Label* lost_precision, Label* is_nan, |
| 257 | Label* minus_zero, Label::Distance dst) { |
| 258 | DCHECK(!input_reg.is(scratch)); |
| 259 | cvttsd2si(result_reg, Operand(input_reg)); |
| 260 | Cvtsi2sd(scratch, Operand(result_reg)); |
| 261 | ucomisd(scratch, input_reg); |
| 262 | j(not_equal, lost_precision, dst); |
| 263 | j(parity_even, is_nan, dst); |
| 264 | if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { |
| 265 | Label done; |
| 266 | // The integer converted back is equal to the original. We |
| 267 | // only have to test if we got -0 as an input. |
| 268 | test(result_reg, Operand(result_reg)); |
| 269 | j(not_zero, &done, Label::kNear); |
| 270 | movmskpd(result_reg, input_reg); |
| 271 | // Bit 0 contains the sign of the double in input_reg. |
| 272 | // If input was positive, we are ok and return 0, otherwise |
| 273 | // jump to minus_zero. |
| 274 | and_(result_reg, 1); |
| 275 | j(not_zero, minus_zero, dst); |
| 276 | bind(&done); |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | |
| 281 | void MacroAssembler::TruncateHeapNumberToI(Register result_reg, |
| 282 | Register input_reg) { |
| 283 | Label done, slow_case; |
| 284 | |
| 285 | if (CpuFeatures::IsSupported(SSE3)) { |
| 286 | CpuFeatureScope scope(this, SSE3); |
| 287 | Label convert; |
| 288 | // Use more powerful conversion when sse3 is available. |
| 289 | // Load x87 register with heap number. |
| 290 | fld_d(FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 291 | // Get exponent alone and check for too-big exponent. |
| 292 | mov(result_reg, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 293 | and_(result_reg, HeapNumber::kExponentMask); |
| 294 | const uint32_t kTooBigExponent = |
| 295 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 296 | cmp(Operand(result_reg), Immediate(kTooBigExponent)); |
| 297 | j(greater_equal, &slow_case, Label::kNear); |
| 298 | |
| 299 | // Reserve space for 64 bit answer. |
| 300 | sub(Operand(esp), Immediate(kDoubleSize)); |
| 301 | // Do conversion, which cannot fail because we checked the exponent. |
| 302 | fisttp_d(Operand(esp, 0)); |
| 303 | mov(result_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 304 | add(Operand(esp), Immediate(kDoubleSize)); |
| 305 | jmp(&done, Label::kNear); |
| 306 | |
| 307 | // Slow case. |
| 308 | bind(&slow_case); |
| 309 | if (input_reg.is(result_reg)) { |
| 310 | // Input is clobbered. Restore number from fpu stack |
| 311 | sub(Operand(esp), Immediate(kDoubleSize)); |
| 312 | fstp_d(Operand(esp, 0)); |
| 313 | SlowTruncateToI(result_reg, esp, 0); |
| 314 | add(esp, Immediate(kDoubleSize)); |
| 315 | } else { |
| 316 | fstp(0); |
| 317 | SlowTruncateToI(result_reg, input_reg); |
| 318 | } |
| 319 | } else { |
| 320 | movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 321 | cvttsd2si(result_reg, Operand(xmm0)); |
| 322 | cmp(result_reg, 0x1); |
| 323 | j(no_overflow, &done, Label::kNear); |
| 324 | // Check if the input was 0x8000000 (kMinInt). |
| 325 | // If no, then we got an overflow and we deoptimize. |
| 326 | ExternalReference min_int = ExternalReference::address_of_min_int(); |
| 327 | ucomisd(xmm0, Operand::StaticVariable(min_int)); |
| 328 | j(not_equal, &slow_case, Label::kNear); |
| 329 | j(parity_even, &slow_case, Label::kNear); // NaN. |
| 330 | jmp(&done, Label::kNear); |
| 331 | |
| 332 | // Slow case. |
| 333 | bind(&slow_case); |
| 334 | if (input_reg.is(result_reg)) { |
| 335 | // Input is clobbered. Restore number from double scratch. |
| 336 | sub(esp, Immediate(kDoubleSize)); |
| 337 | movsd(MemOperand(esp, 0), xmm0); |
| 338 | SlowTruncateToI(result_reg, esp, 0); |
| 339 | add(esp, Immediate(kDoubleSize)); |
| 340 | } else { |
| 341 | SlowTruncateToI(result_reg, input_reg); |
| 342 | } |
| 343 | } |
| 344 | bind(&done); |
| 345 | } |
| 346 | |
| 347 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 348 | void MacroAssembler::LoadUint32(XMMRegister dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 349 | Label done; |
| 350 | cmp(src, Immediate(0)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 351 | ExternalReference uint32_bias = ExternalReference::address_of_uint32_bias(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 352 | Cvtsi2sd(dst, src); |
| 353 | j(not_sign, &done, Label::kNear); |
| 354 | addsd(dst, Operand::StaticVariable(uint32_bias)); |
| 355 | bind(&done); |
| 356 | } |
| 357 | |
| 358 | |
| 359 | void MacroAssembler::RecordWriteArray( |
| 360 | Register object, |
| 361 | Register value, |
| 362 | Register index, |
| 363 | SaveFPRegsMode save_fp, |
| 364 | RememberedSetAction remembered_set_action, |
| 365 | SmiCheck smi_check, |
| 366 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 367 | // First, check if a write barrier is even needed. The tests below |
| 368 | // catch stores of Smis. |
| 369 | Label done; |
| 370 | |
| 371 | // Skip barrier if writing a smi. |
| 372 | if (smi_check == INLINE_SMI_CHECK) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 373 | DCHECK_EQ(0, kSmiTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 374 | test(value, Immediate(kSmiTagMask)); |
| 375 | j(zero, &done); |
| 376 | } |
| 377 | |
| 378 | // Array access: calculate the destination address in the same manner as |
| 379 | // KeyedStoreIC::GenerateGeneric. Multiply a smi by 2 to get an offset |
| 380 | // into an array of words. |
| 381 | Register dst = index; |
| 382 | lea(dst, Operand(object, index, times_half_pointer_size, |
| 383 | FixedArray::kHeaderSize - kHeapObjectTag)); |
| 384 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 385 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 386 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 387 | |
| 388 | bind(&done); |
| 389 | |
| 390 | // Clobber clobbered input registers when running with the debug-code flag |
| 391 | // turned on to provoke errors. |
| 392 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 393 | mov(value, Immediate(bit_cast<int32_t>(kZapValue))); |
| 394 | mov(index, Immediate(bit_cast<int32_t>(kZapValue))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 395 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 396 | } |
| 397 | |
| 398 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 399 | void MacroAssembler::RecordWriteField( |
| 400 | Register object, |
| 401 | int offset, |
| 402 | Register value, |
| 403 | Register dst, |
| 404 | SaveFPRegsMode save_fp, |
| 405 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 406 | SmiCheck smi_check, |
| 407 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 408 | // First, check if a write barrier is even needed. The tests below |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 409 | // catch stores of Smis. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 410 | Label done; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 411 | |
| 412 | // Skip barrier if writing a smi. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 413 | if (smi_check == INLINE_SMI_CHECK) { |
| 414 | JumpIfSmi(value, &done, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 415 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 416 | |
| 417 | // Although the object register is tagged, the offset is relative to the start |
| 418 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 419 | DCHECK(IsAligned(offset, kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 420 | |
| 421 | lea(dst, FieldOperand(object, offset)); |
| 422 | if (emit_debug_code()) { |
| 423 | Label ok; |
| 424 | test_b(dst, (1 << kPointerSizeLog2) - 1); |
| 425 | j(zero, &ok, Label::kNear); |
| 426 | int3(); |
| 427 | bind(&ok); |
| 428 | } |
| 429 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 430 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 431 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 432 | |
| 433 | bind(&done); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 434 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 435 | // Clobber clobbered input registers when running with the debug-code flag |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 436 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 437 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 438 | mov(value, Immediate(bit_cast<int32_t>(kZapValue))); |
| 439 | mov(dst, Immediate(bit_cast<int32_t>(kZapValue))); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 440 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 444 | void MacroAssembler::RecordWriteForMap( |
| 445 | Register object, |
| 446 | Handle<Map> map, |
| 447 | Register scratch1, |
| 448 | Register scratch2, |
| 449 | SaveFPRegsMode save_fp) { |
| 450 | Label done; |
| 451 | |
| 452 | Register address = scratch1; |
| 453 | Register value = scratch2; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 454 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 455 | Label ok; |
| 456 | lea(address, FieldOperand(object, HeapObject::kMapOffset)); |
| 457 | test_b(address, (1 << kPointerSizeLog2) - 1); |
| 458 | j(zero, &ok, Label::kNear); |
| 459 | int3(); |
| 460 | bind(&ok); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 461 | } |
| 462 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 463 | DCHECK(!object.is(value)); |
| 464 | DCHECK(!object.is(address)); |
| 465 | DCHECK(!value.is(address)); |
| 466 | AssertNotSmi(object); |
| 467 | |
| 468 | if (!FLAG_incremental_marking) { |
| 469 | return; |
| 470 | } |
| 471 | |
| 472 | // Compute the address. |
| 473 | lea(address, FieldOperand(object, HeapObject::kMapOffset)); |
| 474 | |
| 475 | // A single check of the map's pages interesting flag suffices, since it is |
| 476 | // only set during incremental collection, and then it's also guaranteed that |
| 477 | // the from object's page's interesting flag is also set. This optimization |
| 478 | // relies on the fact that maps can never be in new space. |
| 479 | DCHECK(!isolate()->heap()->InNewSpace(*map)); |
| 480 | CheckPageFlagForMap(map, |
| 481 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 482 | zero, |
| 483 | &done, |
| 484 | Label::kNear); |
| 485 | |
| 486 | RecordWriteStub stub(isolate(), object, value, address, OMIT_REMEMBERED_SET, |
| 487 | save_fp); |
| 488 | CallStub(&stub); |
| 489 | |
| 490 | bind(&done); |
| 491 | |
| 492 | // Count number of write barriers in generated code. |
| 493 | isolate()->counters()->write_barriers_static()->Increment(); |
| 494 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 495 | |
| 496 | // Clobber clobbered input registers when running with the debug-code flag |
| 497 | // turned on to provoke errors. |
| 498 | if (emit_debug_code()) { |
| 499 | mov(value, Immediate(bit_cast<int32_t>(kZapValue))); |
| 500 | mov(scratch1, Immediate(bit_cast<int32_t>(kZapValue))); |
| 501 | mov(scratch2, Immediate(bit_cast<int32_t>(kZapValue))); |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | |
| 506 | void MacroAssembler::RecordWrite( |
| 507 | Register object, |
| 508 | Register address, |
| 509 | Register value, |
| 510 | SaveFPRegsMode fp_mode, |
| 511 | RememberedSetAction remembered_set_action, |
| 512 | SmiCheck smi_check, |
| 513 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 514 | DCHECK(!object.is(value)); |
| 515 | DCHECK(!object.is(address)); |
| 516 | DCHECK(!value.is(address)); |
| 517 | AssertNotSmi(object); |
| 518 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 519 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 520 | !FLAG_incremental_marking) { |
| 521 | return; |
| 522 | } |
| 523 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 524 | if (emit_debug_code()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 525 | Label ok; |
| 526 | cmp(value, Operand(address, 0)); |
| 527 | j(equal, &ok, Label::kNear); |
| 528 | int3(); |
| 529 | bind(&ok); |
| 530 | } |
| 531 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 532 | // First, check if a write barrier is even needed. The tests below |
| 533 | // catch stores of Smis and stores into young gen. |
| 534 | Label done; |
| 535 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 536 | if (smi_check == INLINE_SMI_CHECK) { |
| 537 | // Skip barrier if writing a smi. |
| 538 | JumpIfSmi(value, &done, Label::kNear); |
| 539 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 540 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 541 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 542 | CheckPageFlag(value, |
| 543 | value, // Used as scratch. |
| 544 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 545 | zero, |
| 546 | &done, |
| 547 | Label::kNear); |
| 548 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 549 | CheckPageFlag(object, |
| 550 | value, // Used as scratch. |
| 551 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 552 | zero, |
| 553 | &done, |
| 554 | Label::kNear); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 555 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 556 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 557 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 558 | CallStub(&stub); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 559 | |
| 560 | bind(&done); |
| 561 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 562 | // Count number of write barriers in generated code. |
| 563 | isolate()->counters()->write_barriers_static()->Increment(); |
| 564 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 565 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 566 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 567 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 568 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 569 | mov(address, Immediate(bit_cast<int32_t>(kZapValue))); |
| 570 | mov(value, Immediate(bit_cast<int32_t>(kZapValue))); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 571 | } |
| 572 | } |
| 573 | |
| 574 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 575 | void MacroAssembler::DebugBreak() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 576 | Move(eax, Immediate(0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 577 | mov(ebx, Immediate(ExternalReference(Runtime::kHandleDebuggerStatement, |
| 578 | isolate()))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 579 | CEntryStub ces(isolate(), 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 580 | call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 581 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 582 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 583 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 584 | void MacroAssembler::Cvtsi2sd(XMMRegister dst, const Operand& src) { |
| 585 | xorps(dst, dst); |
| 586 | cvtsi2sd(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 590 | bool MacroAssembler::IsUnsafeImmediate(const Immediate& x) { |
| 591 | static const int kMaxImmediateBits = 17; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 592 | if (!RelocInfo::IsNone(x.rmode_)) return false; |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 593 | return !is_intn(x.x_, kMaxImmediateBits); |
| 594 | } |
| 595 | |
| 596 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 597 | void MacroAssembler::SafeMove(Register dst, const Immediate& x) { |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 598 | if (IsUnsafeImmediate(x) && jit_cookie() != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 599 | Move(dst, Immediate(x.x_ ^ jit_cookie())); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 600 | xor_(dst, jit_cookie()); |
| 601 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 602 | Move(dst, x); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 603 | } |
| 604 | } |
| 605 | |
| 606 | |
| 607 | void MacroAssembler::SafePush(const Immediate& x) { |
| 608 | if (IsUnsafeImmediate(x) && jit_cookie() != 0) { |
| 609 | push(Immediate(x.x_ ^ jit_cookie())); |
| 610 | xor_(Operand(esp, 0), Immediate(jit_cookie())); |
| 611 | } else { |
| 612 | push(x); |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 617 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 618 | InstanceType type, |
| 619 | Register map) { |
| 620 | mov(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 621 | CmpInstanceType(map, type); |
| 622 | } |
| 623 | |
| 624 | |
| 625 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 626 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 627 | static_cast<int8_t>(type)); |
| 628 | } |
| 629 | |
| 630 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 631 | void MacroAssembler::CheckFastElements(Register map, |
| 632 | Label* fail, |
| 633 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 634 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 635 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 636 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 637 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 638 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 639 | Map::kMaximumBitField2FastHoleyElementValue); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 640 | j(above, fail, distance); |
| 641 | } |
| 642 | |
| 643 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 644 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 645 | Label* fail, |
| 646 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 647 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 648 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 649 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 650 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 651 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 652 | Map::kMaximumBitField2FastHoleySmiElementValue); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 653 | j(below_equal, fail, distance); |
| 654 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 655 | Map::kMaximumBitField2FastHoleyElementValue); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 656 | j(above, fail, distance); |
| 657 | } |
| 658 | |
| 659 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 660 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 661 | Label* fail, |
| 662 | Label::Distance distance) { |
| 663 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 664 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 665 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 666 | Map::kMaximumBitField2FastHoleySmiElementValue); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 667 | j(above, fail, distance); |
| 668 | } |
| 669 | |
| 670 | |
| 671 | void MacroAssembler::StoreNumberToDoubleElements( |
| 672 | Register maybe_number, |
| 673 | Register elements, |
| 674 | Register key, |
| 675 | Register scratch1, |
| 676 | XMMRegister scratch2, |
| 677 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 678 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 679 | Label smi_value, done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 680 | JumpIfSmi(maybe_number, &smi_value, Label::kNear); |
| 681 | |
| 682 | CheckMap(maybe_number, |
| 683 | isolate()->factory()->heap_number_map(), |
| 684 | fail, |
| 685 | DONT_DO_SMI_CHECK); |
| 686 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 687 | // Double value, turn potential sNaN into qNaN. |
| 688 | Move(scratch2, 1.0); |
| 689 | mulsd(scratch2, FieldOperand(maybe_number, HeapNumber::kValueOffset)); |
| 690 | jmp(&done, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 691 | |
| 692 | bind(&smi_value); |
| 693 | // Value is a smi. Convert to a double and store. |
| 694 | // Preserve original value. |
| 695 | mov(scratch1, maybe_number); |
| 696 | SmiUntag(scratch1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 697 | Cvtsi2sd(scratch2, scratch1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 698 | bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 699 | movsd(FieldOperand(elements, key, times_4, |
| 700 | FixedDoubleArray::kHeaderSize - elements_offset), |
| 701 | scratch2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 705 | void MacroAssembler::CompareMap(Register obj, Handle<Map> map) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 706 | cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 707 | } |
| 708 | |
| 709 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 710 | void MacroAssembler::CheckMap(Register obj, |
| 711 | Handle<Map> map, |
| 712 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 713 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 714 | if (smi_check_type == DO_SMI_CHECK) { |
| 715 | JumpIfSmi(obj, fail); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 716 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 717 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 718 | CompareMap(obj, map); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 719 | j(not_equal, fail); |
| 720 | } |
| 721 | |
| 722 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 723 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 724 | Register scratch2, Handle<WeakCell> cell, |
| 725 | Handle<Code> success, |
| 726 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 727 | Label fail; |
| 728 | if (smi_check_type == DO_SMI_CHECK) { |
| 729 | JumpIfSmi(obj, &fail); |
| 730 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 731 | mov(scratch1, FieldOperand(obj, HeapObject::kMapOffset)); |
| 732 | CmpWeakValue(scratch1, cell, scratch2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 733 | j(equal, success); |
| 734 | |
| 735 | bind(&fail); |
| 736 | } |
| 737 | |
| 738 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 739 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 740 | Register map, |
| 741 | Register instance_type) { |
| 742 | mov(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 743 | movzx_b(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 744 | STATIC_ASSERT(kNotStringTag != 0); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 745 | test(instance_type, Immediate(kIsNotStringMask)); |
| 746 | return zero; |
| 747 | } |
| 748 | |
| 749 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 750 | Condition MacroAssembler::IsObjectNameType(Register heap_object, |
| 751 | Register map, |
| 752 | Register instance_type) { |
| 753 | mov(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 754 | movzx_b(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 755 | cmpb(instance_type, static_cast<uint8_t>(LAST_NAME_TYPE)); |
| 756 | return below_equal; |
| 757 | } |
| 758 | |
| 759 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 760 | void MacroAssembler::FCmp() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 761 | fucomip(); |
| 762 | fstp(0); |
| 763 | } |
| 764 | |
| 765 | |
| 766 | void MacroAssembler::AssertNumber(Register object) { |
| 767 | if (emit_debug_code()) { |
| 768 | Label ok; |
| 769 | JumpIfSmi(object, &ok); |
| 770 | cmp(FieldOperand(object, HeapObject::kMapOffset), |
| 771 | isolate()->factory()->heap_number_map()); |
| 772 | Check(equal, kOperandNotANumber); |
| 773 | bind(&ok); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 774 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 778 | void MacroAssembler::AssertSmi(Register object) { |
| 779 | if (emit_debug_code()) { |
| 780 | test(object, Immediate(kSmiTagMask)); |
| 781 | Check(equal, kOperandIsNotASmi); |
| 782 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 786 | void MacroAssembler::AssertString(Register object) { |
| 787 | if (emit_debug_code()) { |
| 788 | test(object, Immediate(kSmiTagMask)); |
| 789 | Check(not_equal, kOperandIsASmiAndNotAString); |
| 790 | push(object); |
| 791 | mov(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 792 | CmpInstanceType(object, FIRST_NONSTRING_TYPE); |
| 793 | pop(object); |
| 794 | Check(below, kOperandIsNotAString); |
| 795 | } |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 799 | void MacroAssembler::AssertName(Register object) { |
| 800 | if (emit_debug_code()) { |
| 801 | test(object, Immediate(kSmiTagMask)); |
| 802 | Check(not_equal, kOperandIsASmiAndNotAName); |
| 803 | push(object); |
| 804 | mov(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 805 | CmpInstanceType(object, LAST_NAME_TYPE); |
| 806 | pop(object); |
| 807 | Check(below_equal, kOperandIsNotAName); |
| 808 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 812 | void MacroAssembler::AssertFunction(Register object) { |
| 813 | if (emit_debug_code()) { |
| 814 | test(object, Immediate(kSmiTagMask)); |
| 815 | Check(not_equal, kOperandIsASmiAndNotAFunction); |
| 816 | Push(object); |
| 817 | CmpObjectType(object, JS_FUNCTION_TYPE, object); |
| 818 | Pop(object); |
| 819 | Check(equal, kOperandIsNotAFunction); |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | |
| 824 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 825 | if (emit_debug_code()) { |
| 826 | test(object, Immediate(kSmiTagMask)); |
| 827 | Check(not_equal, kOperandIsASmiAndNotABoundFunction); |
| 828 | Push(object); |
| 829 | CmpObjectType(object, JS_BOUND_FUNCTION_TYPE, object); |
| 830 | Pop(object); |
| 831 | Check(equal, kOperandIsNotABoundFunction); |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 836 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) { |
| 837 | if (emit_debug_code()) { |
| 838 | Label done_checking; |
| 839 | AssertNotSmi(object); |
| 840 | cmp(object, isolate()->factory()->undefined_value()); |
| 841 | j(equal, &done_checking); |
| 842 | cmp(FieldOperand(object, 0), |
| 843 | Immediate(isolate()->factory()->allocation_site_map())); |
| 844 | Assert(equal, kExpectedUndefinedOrCell); |
| 845 | bind(&done_checking); |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | |
| 850 | void MacroAssembler::AssertNotSmi(Register object) { |
| 851 | if (emit_debug_code()) { |
| 852 | test(object, Immediate(kSmiTagMask)); |
| 853 | Check(not_equal, kOperandIsASmi); |
| 854 | } |
| 855 | } |
| 856 | |
| 857 | |
| 858 | void MacroAssembler::StubPrologue() { |
| 859 | push(ebp); // Caller's frame pointer. |
| 860 | mov(ebp, esp); |
| 861 | push(esi); // Callee's context. |
| 862 | push(Immediate(Smi::FromInt(StackFrame::STUB))); |
| 863 | } |
| 864 | |
| 865 | |
| 866 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 867 | PredictableCodeSizeScope predictible_code_size_scope(this, |
| 868 | kNoCodeAgeSequenceLength); |
| 869 | if (code_pre_aging) { |
| 870 | // Pre-age the code. |
| 871 | call(isolate()->builtins()->MarkCodeAsExecutedOnce(), |
| 872 | RelocInfo::CODE_AGE_SEQUENCE); |
| 873 | Nop(kNoCodeAgeSequenceLength - Assembler::kCallInstructionLength); |
| 874 | } else { |
| 875 | push(ebp); // Caller's frame pointer. |
| 876 | mov(ebp, esp); |
| 877 | push(esi); // Callee's context. |
| 878 | push(edi); // Callee's JS function. |
| 879 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 880 | } |
| 881 | |
| 882 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 883 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 884 | mov(vector, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 885 | mov(vector, FieldOperand(vector, JSFunction::kSharedFunctionInfoOffset)); |
| 886 | mov(vector, FieldOperand(vector, SharedFunctionInfo::kFeedbackVectorOffset)); |
| 887 | } |
| 888 | |
| 889 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 890 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 891 | bool load_constant_pool_pointer_reg) { |
| 892 | // Out-of-line constant pool not implemented on ia32. |
| 893 | UNREACHABLE(); |
| 894 | } |
| 895 | |
| 896 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 897 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
| 898 | push(ebp); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 899 | mov(ebp, esp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 900 | push(esi); |
| 901 | push(Immediate(Smi::FromInt(type))); |
| 902 | push(Immediate(CodeObject())); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 903 | if (emit_debug_code()) { |
| 904 | cmp(Operand(esp, 0), Immediate(isolate()->factory()->undefined_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 905 | Check(not_equal, kCodeObjectNotProperlyPatched); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 906 | } |
| 907 | } |
| 908 | |
| 909 | |
| 910 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 911 | if (emit_debug_code()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 912 | cmp(Operand(ebp, StandardFrameConstants::kMarkerOffset), |
| 913 | Immediate(Smi::FromInt(type))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 914 | Check(equal, kStackFrameTypesMustMatch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 915 | } |
| 916 | leave(); |
| 917 | } |
| 918 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 919 | |
| 920 | void MacroAssembler::EnterExitFramePrologue() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 921 | // Set up the frame structure on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 922 | DCHECK(ExitFrameConstants::kCallerSPDisplacement == +2 * kPointerSize); |
| 923 | DCHECK(ExitFrameConstants::kCallerPCOffset == +1 * kPointerSize); |
| 924 | DCHECK(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 925 | push(ebp); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 926 | mov(ebp, esp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 927 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 928 | // Reserve room for entry stack pointer and push the code object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 929 | DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 930 | push(Immediate(0)); // Saved entry sp, patched before call. |
| 931 | push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 932 | |
| 933 | // Save the frame pointer and the context in top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 934 | ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, isolate()); |
| 935 | ExternalReference context_address(Isolate::kContextAddress, isolate()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 936 | ExternalReference c_function_address(Isolate::kCFunctionAddress, isolate()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 937 | mov(Operand::StaticVariable(c_entry_fp_address), ebp); |
| 938 | mov(Operand::StaticVariable(context_address), esi); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 939 | mov(Operand::StaticVariable(c_function_address), ebx); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 940 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 941 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 942 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 943 | void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) { |
| 944 | // Optionally save all XMM registers. |
| 945 | if (save_doubles) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 946 | int space = XMMRegister::kMaxNumRegisters * kDoubleSize + |
| 947 | argc * kPointerSize; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 948 | sub(esp, Immediate(space)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 949 | const int offset = -2 * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 950 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 951 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 952 | movsd(Operand(ebp, offset - ((i + 1) * kDoubleSize)), reg); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 953 | } |
| 954 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 955 | sub(esp, Immediate(argc * kPointerSize)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 956 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 957 | |
| 958 | // Get the required frame alignment for the OS. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 959 | const int kFrameAlignment = base::OS::ActivationFrameAlignment(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 960 | if (kFrameAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 961 | DCHECK(base::bits::IsPowerOfTwo32(kFrameAlignment)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 962 | and_(esp, -kFrameAlignment); |
| 963 | } |
| 964 | |
| 965 | // Patch the saved entry sp. |
| 966 | mov(Operand(ebp, ExitFrameConstants::kSPOffset), esp); |
| 967 | } |
| 968 | |
| 969 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 970 | void MacroAssembler::EnterExitFrame(bool save_doubles) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 971 | EnterExitFramePrologue(); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 972 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 973 | // Set up argc and argv in callee-saved registers. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 974 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 975 | mov(edi, eax); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 976 | lea(esi, Operand(ebp, eax, times_4, offset)); |
| 977 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 978 | // Reserve space for argc, argv and isolate. |
| 979 | EnterExitFrameEpilogue(3, save_doubles); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 980 | } |
| 981 | |
| 982 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 983 | void MacroAssembler::EnterApiExitFrame(int argc) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 984 | EnterExitFramePrologue(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 985 | EnterExitFrameEpilogue(argc, false); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 986 | } |
| 987 | |
| 988 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 989 | void MacroAssembler::LeaveExitFrame(bool save_doubles, bool pop_arguments) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 990 | // Optionally restore all XMM registers. |
| 991 | if (save_doubles) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 992 | const int offset = -2 * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 993 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 994 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 995 | movsd(reg, Operand(ebp, offset - ((i + 1) * kDoubleSize))); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 996 | } |
| 997 | } |
| 998 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 999 | if (pop_arguments) { |
| 1000 | // Get the return address from the stack and restore the frame pointer. |
| 1001 | mov(ecx, Operand(ebp, 1 * kPointerSize)); |
| 1002 | mov(ebp, Operand(ebp, 0 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1003 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1004 | // Pop the arguments and the receiver from the caller stack. |
| 1005 | lea(esp, Operand(esi, 1 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1006 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1007 | // Push the return address to get ready to return. |
| 1008 | push(ecx); |
| 1009 | } else { |
| 1010 | // Otherwise just leave the exit frame. |
| 1011 | leave(); |
| 1012 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1013 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1014 | LeaveExitFrameEpilogue(true); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1015 | } |
| 1016 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1017 | |
| 1018 | void MacroAssembler::LeaveExitFrameEpilogue(bool restore_context) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1019 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1020 | ExternalReference context_address(Isolate::kContextAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1021 | if (restore_context) { |
| 1022 | mov(esi, Operand::StaticVariable(context_address)); |
| 1023 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1024 | #ifdef DEBUG |
| 1025 | mov(Operand::StaticVariable(context_address), Immediate(0)); |
| 1026 | #endif |
| 1027 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1028 | // Clear the top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1029 | ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1030 | isolate()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1031 | mov(Operand::StaticVariable(c_entry_fp_address), Immediate(0)); |
| 1032 | } |
| 1033 | |
| 1034 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1035 | void MacroAssembler::LeaveApiExitFrame(bool restore_context) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1036 | mov(esp, ebp); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1037 | pop(ebp); |
| 1038 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1039 | LeaveExitFrameEpilogue(restore_context); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1040 | } |
| 1041 | |
| 1042 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1043 | void MacroAssembler::PushStackHandler() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1044 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1045 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1046 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1047 | |
| 1048 | // Link the current handler as the next handler. |
| 1049 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
| 1050 | push(Operand::StaticVariable(handler_address)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1051 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1052 | // Set this new handler as the current one. |
| 1053 | mov(Operand::StaticVariable(handler_address), esp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1054 | } |
| 1055 | |
| 1056 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1057 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1058 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1059 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
| 1060 | pop(Operand::StaticVariable(handler_address)); |
| 1061 | add(esp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
| 1062 | } |
| 1063 | |
| 1064 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1065 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1066 | Register scratch1, |
| 1067 | Register scratch2, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1068 | Label* miss) { |
| 1069 | Label same_contexts; |
| 1070 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1071 | DCHECK(!holder_reg.is(scratch1)); |
| 1072 | DCHECK(!holder_reg.is(scratch2)); |
| 1073 | DCHECK(!scratch1.is(scratch2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1074 | |
| 1075 | // Load current lexical context from the stack frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1076 | mov(scratch1, Operand(ebp, StandardFrameConstants::kContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1077 | |
| 1078 | // When generating debug code, make sure the lexical context is set. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1079 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1080 | cmp(scratch1, Immediate(0)); |
| 1081 | Check(not_equal, kWeShouldNotHaveAnEmptyLexicalContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1082 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1083 | // Load the native context of the current context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1084 | mov(scratch1, ContextOperand(scratch1, Context::NATIVE_CONTEXT_INDEX)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1085 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1086 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1087 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1088 | // Read the first word and compare to native_context_map. |
| 1089 | cmp(FieldOperand(scratch1, HeapObject::kMapOffset), |
| 1090 | isolate()->factory()->native_context_map()); |
| 1091 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1095 | cmp(scratch1, FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1096 | j(equal, &same_contexts); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1097 | |
| 1098 | // Compare security tokens, save holder_reg on the stack so we can use it |
| 1099 | // as a temporary register. |
| 1100 | // |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1101 | // Check that the security token in the calling global object is |
| 1102 | // compatible with the security token in the receiving global |
| 1103 | // object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1104 | mov(scratch2, |
| 1105 | FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1106 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1107 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1108 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1109 | cmp(scratch2, isolate()->factory()->null_value()); |
| 1110 | Check(not_equal, kJSGlobalProxyContextShouldNotBeNull); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1111 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1112 | // Read the first word and compare to native_context_map(), |
| 1113 | cmp(FieldOperand(scratch2, HeapObject::kMapOffset), |
| 1114 | isolate()->factory()->native_context_map()); |
| 1115 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1116 | } |
| 1117 | |
| 1118 | int token_offset = Context::kHeaderSize + |
| 1119 | Context::SECURITY_TOKEN_INDEX * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1120 | mov(scratch1, FieldOperand(scratch1, token_offset)); |
| 1121 | cmp(scratch1, FieldOperand(scratch2, token_offset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1122 | j(not_equal, miss); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1123 | |
| 1124 | bind(&same_contexts); |
| 1125 | } |
| 1126 | |
| 1127 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1128 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 1129 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 1130 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1131 | // |
| 1132 | // Note: r0 will contain hash code |
| 1133 | void MacroAssembler::GetNumberHash(Register r0, Register scratch) { |
| 1134 | // Xor original key with a seed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1135 | if (serializer_enabled()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1136 | ExternalReference roots_array_start = |
| 1137 | ExternalReference::roots_array_start(isolate()); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1138 | mov(scratch, Immediate(Heap::kHashSeedRootIndex)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1139 | mov(scratch, |
| 1140 | Operand::StaticArray(scratch, times_pointer_size, roots_array_start)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1141 | SmiUntag(scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1142 | xor_(r0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1143 | } else { |
| 1144 | int32_t seed = isolate()->heap()->HashSeed(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1145 | xor_(r0, Immediate(seed)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1146 | } |
| 1147 | |
| 1148 | // hash = ~hash + (hash << 15); |
| 1149 | mov(scratch, r0); |
| 1150 | not_(r0); |
| 1151 | shl(scratch, 15); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1152 | add(r0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1153 | // hash = hash ^ (hash >> 12); |
| 1154 | mov(scratch, r0); |
| 1155 | shr(scratch, 12); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1156 | xor_(r0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1157 | // hash = hash + (hash << 2); |
| 1158 | lea(r0, Operand(r0, r0, times_4, 0)); |
| 1159 | // hash = hash ^ (hash >> 4); |
| 1160 | mov(scratch, r0); |
| 1161 | shr(scratch, 4); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1162 | xor_(r0, scratch); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1163 | // hash = hash * 2057; |
| 1164 | imul(r0, r0, 2057); |
| 1165 | // hash = hash ^ (hash >> 16); |
| 1166 | mov(scratch, r0); |
| 1167 | shr(scratch, 16); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1168 | xor_(r0, scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1169 | and_(r0, 0x3fffffff); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | |
| 1173 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1174 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 1175 | Register elements, |
| 1176 | Register key, |
| 1177 | Register r0, |
| 1178 | Register r1, |
| 1179 | Register r2, |
| 1180 | Register result) { |
| 1181 | // Register use: |
| 1182 | // |
| 1183 | // elements - holds the slow-case elements of the receiver and is unchanged. |
| 1184 | // |
| 1185 | // key - holds the smi key on entry and is unchanged. |
| 1186 | // |
| 1187 | // Scratch registers: |
| 1188 | // |
| 1189 | // r0 - holds the untagged key on entry and holds the hash once computed. |
| 1190 | // |
| 1191 | // r1 - used to hold the capacity mask of the dictionary |
| 1192 | // |
| 1193 | // r2 - used for the index into the dictionary. |
| 1194 | // |
| 1195 | // result - holds the result on exit if the load succeeds and we fall through. |
| 1196 | |
| 1197 | Label done; |
| 1198 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1199 | GetNumberHash(r0, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1200 | |
| 1201 | // Compute capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1202 | mov(r1, FieldOperand(elements, SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1203 | shr(r1, kSmiTagSize); // convert smi to int |
| 1204 | dec(r1); |
| 1205 | |
| 1206 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1207 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1208 | // Use r2 for index calculations and keep the hash intact in r0. |
| 1209 | mov(r2, r0); |
| 1210 | // Compute the masked index: (hash + i + i * i) & mask. |
| 1211 | if (i > 0) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1212 | add(r2, Immediate(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1213 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1214 | and_(r2, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1215 | |
| 1216 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1217 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1218 | lea(r2, Operand(r2, r2, times_2, 0)); // r2 = r2 * 3 |
| 1219 | |
| 1220 | // Check if the key matches. |
| 1221 | cmp(key, FieldOperand(elements, |
| 1222 | r2, |
| 1223 | times_pointer_size, |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1224 | SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1225 | if (i != (kNumberDictionaryProbes - 1)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1226 | j(equal, &done); |
| 1227 | } else { |
| 1228 | j(not_equal, miss); |
| 1229 | } |
| 1230 | } |
| 1231 | |
| 1232 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1233 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1234 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1235 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1236 | DCHECK_EQ(DATA, 0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1237 | test(FieldOperand(elements, r2, times_pointer_size, kDetailsOffset), |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1238 | Immediate(PropertyDetails::TypeField::kMask << kSmiTagSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1239 | j(not_zero, miss); |
| 1240 | |
| 1241 | // Get the value at the masked, scaled index. |
| 1242 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 1243 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1244 | mov(result, FieldOperand(elements, r2, times_pointer_size, kValueOffset)); |
| 1245 | } |
| 1246 | |
| 1247 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1248 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1249 | Register scratch, |
| 1250 | AllocationFlags flags) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1251 | ExternalReference allocation_top = |
| 1252 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1253 | |
| 1254 | // Just return if allocation top is already known. |
| 1255 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
| 1256 | // No use of scratch if allocation top is provided. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1257 | DCHECK(scratch.is(no_reg)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1258 | #ifdef DEBUG |
| 1259 | // Assert that result actually contains top on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1260 | cmp(result, Operand::StaticVariable(allocation_top)); |
| 1261 | Check(equal, kUnexpectedAllocationTop); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1262 | #endif |
| 1263 | return; |
| 1264 | } |
| 1265 | |
| 1266 | // Move address of new object to result. Use scratch register if available. |
| 1267 | if (scratch.is(no_reg)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1268 | mov(result, Operand::StaticVariable(allocation_top)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1269 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1270 | mov(scratch, Immediate(allocation_top)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1271 | mov(result, Operand(scratch, 0)); |
| 1272 | } |
| 1273 | } |
| 1274 | |
| 1275 | |
| 1276 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1277 | Register scratch, |
| 1278 | AllocationFlags flags) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1279 | if (emit_debug_code()) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1280 | test(result_end, Immediate(kObjectAlignmentMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1281 | Check(zero, kUnalignedAllocationInNewSpace); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1282 | } |
| 1283 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1284 | ExternalReference allocation_top = |
| 1285 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1286 | |
| 1287 | // Update new top. Use scratch if available. |
| 1288 | if (scratch.is(no_reg)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1289 | mov(Operand::StaticVariable(allocation_top), result_end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1290 | } else { |
| 1291 | mov(Operand(scratch, 0), result_end); |
| 1292 | } |
| 1293 | } |
| 1294 | |
| 1295 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1296 | void MacroAssembler::Allocate(int object_size, |
| 1297 | Register result, |
| 1298 | Register result_end, |
| 1299 | Register scratch, |
| 1300 | Label* gc_required, |
| 1301 | AllocationFlags flags) { |
| 1302 | DCHECK((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0); |
| 1303 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 1304 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1305 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 1306 | // Trash the registers to simulate an allocation failure. |
| 1307 | mov(result, Immediate(0x7091)); |
| 1308 | if (result_end.is_valid()) { |
| 1309 | mov(result_end, Immediate(0x7191)); |
| 1310 | } |
| 1311 | if (scratch.is_valid()) { |
| 1312 | mov(scratch, Immediate(0x7291)); |
| 1313 | } |
| 1314 | } |
| 1315 | jmp(gc_required); |
| 1316 | return; |
| 1317 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1318 | DCHECK(!result.is(result_end)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1319 | |
| 1320 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1321 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1322 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1323 | ExternalReference allocation_limit = |
| 1324 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 1325 | |
| 1326 | // Align the next allocation. Storing the filler map without checking top is |
| 1327 | // safe in new-space because the limit of the heap is aligned there. |
| 1328 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1329 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 1330 | Label aligned; |
| 1331 | test(result, Immediate(kDoubleAlignmentMask)); |
| 1332 | j(zero, &aligned, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1333 | if ((flags & PRETENURE) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1334 | cmp(result, Operand::StaticVariable(allocation_limit)); |
| 1335 | j(above_equal, gc_required); |
| 1336 | } |
| 1337 | mov(Operand(result, 0), |
| 1338 | Immediate(isolate()->factory()->one_pointer_filler_map())); |
| 1339 | add(result, Immediate(kDoubleSize / 2)); |
| 1340 | bind(&aligned); |
| 1341 | } |
| 1342 | |
| 1343 | // Calculate new top and bail out if space is exhausted. |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1344 | Register top_reg = result_end.is_valid() ? result_end : result; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1345 | if (!top_reg.is(result)) { |
| 1346 | mov(top_reg, result); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1347 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1348 | add(top_reg, Immediate(object_size)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1349 | j(carry, gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1350 | cmp(top_reg, Operand::StaticVariable(allocation_limit)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1351 | j(above, gc_required); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1352 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1353 | // Update allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1354 | UpdateAllocationTopHelper(top_reg, scratch, flags); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1355 | |
| 1356 | // Tag result if requested. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1357 | bool tag_result = (flags & TAG_OBJECT) != 0; |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1358 | if (top_reg.is(result)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1359 | if (tag_result) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1360 | sub(result, Immediate(object_size - kHeapObjectTag)); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1361 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1362 | sub(result, Immediate(object_size)); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1363 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1364 | } else if (tag_result) { |
| 1365 | DCHECK(kHeapObjectTag == 1); |
| 1366 | inc(result); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1367 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1368 | } |
| 1369 | |
| 1370 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1371 | void MacroAssembler::Allocate(int header_size, |
| 1372 | ScaleFactor element_size, |
| 1373 | Register element_count, |
| 1374 | RegisterValueType element_count_type, |
| 1375 | Register result, |
| 1376 | Register result_end, |
| 1377 | Register scratch, |
| 1378 | Label* gc_required, |
| 1379 | AllocationFlags flags) { |
| 1380 | DCHECK((flags & SIZE_IN_WORDS) == 0); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 1381 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1382 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 1383 | // Trash the registers to simulate an allocation failure. |
| 1384 | mov(result, Immediate(0x7091)); |
| 1385 | mov(result_end, Immediate(0x7191)); |
| 1386 | if (scratch.is_valid()) { |
| 1387 | mov(scratch, Immediate(0x7291)); |
| 1388 | } |
| 1389 | // Register element_count is not modified by the function. |
| 1390 | } |
| 1391 | jmp(gc_required); |
| 1392 | return; |
| 1393 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1394 | DCHECK(!result.is(result_end)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1395 | |
| 1396 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1397 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1398 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1399 | ExternalReference allocation_limit = |
| 1400 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1401 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1402 | // Align the next allocation. Storing the filler map without checking top is |
| 1403 | // safe in new-space because the limit of the heap is aligned there. |
| 1404 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1405 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 1406 | Label aligned; |
| 1407 | test(result, Immediate(kDoubleAlignmentMask)); |
| 1408 | j(zero, &aligned, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1409 | if ((flags & PRETENURE) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1410 | cmp(result, Operand::StaticVariable(allocation_limit)); |
| 1411 | j(above_equal, gc_required); |
| 1412 | } |
| 1413 | mov(Operand(result, 0), |
| 1414 | Immediate(isolate()->factory()->one_pointer_filler_map())); |
| 1415 | add(result, Immediate(kDoubleSize / 2)); |
| 1416 | bind(&aligned); |
| 1417 | } |
| 1418 | |
| 1419 | // Calculate new top and bail out if space is exhausted. |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1420 | // We assume that element_count*element_size + header_size does not |
| 1421 | // overflow. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1422 | if (element_count_type == REGISTER_VALUE_IS_SMI) { |
| 1423 | STATIC_ASSERT(static_cast<ScaleFactor>(times_2 - 1) == times_1); |
| 1424 | STATIC_ASSERT(static_cast<ScaleFactor>(times_4 - 1) == times_2); |
| 1425 | STATIC_ASSERT(static_cast<ScaleFactor>(times_8 - 1) == times_4); |
| 1426 | DCHECK(element_size >= times_2); |
| 1427 | DCHECK(kSmiTagSize == 1); |
| 1428 | element_size = static_cast<ScaleFactor>(element_size - 1); |
| 1429 | } else { |
| 1430 | DCHECK(element_count_type == REGISTER_VALUE_IS_INT32); |
| 1431 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1432 | lea(result_end, Operand(element_count, element_size, header_size)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1433 | add(result_end, result); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1434 | j(carry, gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1435 | cmp(result_end, Operand::StaticVariable(allocation_limit)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1436 | j(above, gc_required); |
| 1437 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1438 | if ((flags & TAG_OBJECT) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1439 | DCHECK(kHeapObjectTag == 1); |
| 1440 | inc(result); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1441 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1442 | |
| 1443 | // Update allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1444 | UpdateAllocationTopHelper(result_end, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1445 | } |
| 1446 | |
| 1447 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1448 | void MacroAssembler::Allocate(Register object_size, |
| 1449 | Register result, |
| 1450 | Register result_end, |
| 1451 | Register scratch, |
| 1452 | Label* gc_required, |
| 1453 | AllocationFlags flags) { |
| 1454 | DCHECK((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 1455 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1456 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 1457 | // Trash the registers to simulate an allocation failure. |
| 1458 | mov(result, Immediate(0x7091)); |
| 1459 | mov(result_end, Immediate(0x7191)); |
| 1460 | if (scratch.is_valid()) { |
| 1461 | mov(scratch, Immediate(0x7291)); |
| 1462 | } |
| 1463 | // object_size is left unchanged by this function. |
| 1464 | } |
| 1465 | jmp(gc_required); |
| 1466 | return; |
| 1467 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1468 | DCHECK(!result.is(result_end)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1469 | |
| 1470 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1471 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1472 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1473 | ExternalReference allocation_limit = |
| 1474 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 1475 | |
| 1476 | // Align the next allocation. Storing the filler map without checking top is |
| 1477 | // safe in new-space because the limit of the heap is aligned there. |
| 1478 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1479 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 1480 | Label aligned; |
| 1481 | test(result, Immediate(kDoubleAlignmentMask)); |
| 1482 | j(zero, &aligned, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1483 | if ((flags & PRETENURE) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1484 | cmp(result, Operand::StaticVariable(allocation_limit)); |
| 1485 | j(above_equal, gc_required); |
| 1486 | } |
| 1487 | mov(Operand(result, 0), |
| 1488 | Immediate(isolate()->factory()->one_pointer_filler_map())); |
| 1489 | add(result, Immediate(kDoubleSize / 2)); |
| 1490 | bind(&aligned); |
| 1491 | } |
| 1492 | |
| 1493 | // Calculate new top and bail out if space is exhausted. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1494 | if (!object_size.is(result_end)) { |
| 1495 | mov(result_end, object_size); |
| 1496 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1497 | add(result_end, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1498 | j(carry, gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1499 | cmp(result_end, Operand::StaticVariable(allocation_limit)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1500 | j(above, gc_required); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1501 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1502 | // Tag result if requested. |
| 1503 | if ((flags & TAG_OBJECT) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1504 | DCHECK(kHeapObjectTag == 1); |
| 1505 | inc(result); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1506 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1507 | |
| 1508 | // Update allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1509 | UpdateAllocationTopHelper(result_end, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1510 | } |
| 1511 | |
| 1512 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1513 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 1514 | Register scratch1, |
| 1515 | Register scratch2, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1516 | Label* gc_required, |
| 1517 | MutableMode mode) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1518 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1519 | Allocate(HeapNumber::kSize, result, scratch1, scratch2, gc_required, |
| 1520 | TAG_OBJECT); |
| 1521 | |
| 1522 | Handle<Map> map = mode == MUTABLE |
| 1523 | ? isolate()->factory()->mutable_heap_number_map() |
| 1524 | : isolate()->factory()->heap_number_map(); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1525 | |
| 1526 | // Set the map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1527 | mov(FieldOperand(result, HeapObject::kMapOffset), Immediate(map)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1528 | } |
| 1529 | |
| 1530 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1531 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 1532 | Register length, |
| 1533 | Register scratch1, |
| 1534 | Register scratch2, |
| 1535 | Register scratch3, |
| 1536 | Label* gc_required) { |
| 1537 | // Calculate the number of bytes needed for the characters in the string while |
| 1538 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1539 | DCHECK((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
| 1540 | DCHECK(kShortSize == 2); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1541 | // scratch1 = length * 2 + kObjectAlignmentMask. |
| 1542 | lea(scratch1, Operand(length, length, times_1, kObjectAlignmentMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1543 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1544 | |
| 1545 | // Allocate two byte string in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1546 | Allocate(SeqTwoByteString::kHeaderSize, |
| 1547 | times_1, |
| 1548 | scratch1, |
| 1549 | REGISTER_VALUE_IS_INT32, |
| 1550 | result, |
| 1551 | scratch2, |
| 1552 | scratch3, |
| 1553 | gc_required, |
| 1554 | TAG_OBJECT); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1555 | |
| 1556 | // Set the map, length and hash field. |
| 1557 | mov(FieldOperand(result, HeapObject::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1558 | Immediate(isolate()->factory()->string_map())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1559 | mov(scratch1, length); |
| 1560 | SmiTag(scratch1); |
| 1561 | mov(FieldOperand(result, String::kLengthOffset), scratch1); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1562 | mov(FieldOperand(result, String::kHashFieldOffset), |
| 1563 | Immediate(String::kEmptyHashField)); |
| 1564 | } |
| 1565 | |
| 1566 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1567 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 1568 | Register scratch1, Register scratch2, |
| 1569 | Register scratch3, |
| 1570 | Label* gc_required) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1571 | // Calculate the number of bytes needed for the characters in the string while |
| 1572 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1573 | DCHECK((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1574 | mov(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1575 | DCHECK(kCharSize == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1576 | add(scratch1, Immediate(kObjectAlignmentMask)); |
| 1577 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1578 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1579 | // Allocate one-byte string in new space. |
| 1580 | Allocate(SeqOneByteString::kHeaderSize, |
| 1581 | times_1, |
| 1582 | scratch1, |
| 1583 | REGISTER_VALUE_IS_INT32, |
| 1584 | result, |
| 1585 | scratch2, |
| 1586 | scratch3, |
| 1587 | gc_required, |
| 1588 | TAG_OBJECT); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1589 | |
| 1590 | // Set the map, length and hash field. |
| 1591 | mov(FieldOperand(result, HeapObject::kMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1592 | Immediate(isolate()->factory()->one_byte_string_map())); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1593 | mov(scratch1, length); |
| 1594 | SmiTag(scratch1); |
| 1595 | mov(FieldOperand(result, String::kLengthOffset), scratch1); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1596 | mov(FieldOperand(result, String::kHashFieldOffset), |
| 1597 | Immediate(String::kEmptyHashField)); |
| 1598 | } |
| 1599 | |
| 1600 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1601 | void MacroAssembler::AllocateOneByteString(Register result, int length, |
| 1602 | Register scratch1, Register scratch2, |
| 1603 | Label* gc_required) { |
| 1604 | DCHECK(length > 0); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 1605 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1606 | // Allocate one-byte string in new space. |
| 1607 | Allocate(SeqOneByteString::SizeFor(length), result, scratch1, scratch2, |
| 1608 | gc_required, TAG_OBJECT); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 1609 | |
| 1610 | // Set the map, length and hash field. |
| 1611 | mov(FieldOperand(result, HeapObject::kMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1612 | Immediate(isolate()->factory()->one_byte_string_map())); |
Iain Merrick | 9ac36c9 | 2010-09-13 15:29:50 +0100 | [diff] [blame] | 1613 | mov(FieldOperand(result, String::kLengthOffset), |
| 1614 | Immediate(Smi::FromInt(length))); |
| 1615 | mov(FieldOperand(result, String::kHashFieldOffset), |
| 1616 | Immediate(String::kEmptyHashField)); |
| 1617 | } |
| 1618 | |
| 1619 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1620 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1621 | Register scratch1, |
| 1622 | Register scratch2, |
| 1623 | Label* gc_required) { |
| 1624 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1625 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 1626 | TAG_OBJECT); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1627 | |
| 1628 | // Set the map. The other fields are left uninitialized. |
| 1629 | mov(FieldOperand(result, HeapObject::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1630 | Immediate(isolate()->factory()->cons_string_map())); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1631 | } |
| 1632 | |
| 1633 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1634 | void MacroAssembler::AllocateOneByteConsString(Register result, |
| 1635 | Register scratch1, |
| 1636 | Register scratch2, |
| 1637 | Label* gc_required) { |
| 1638 | Allocate(ConsString::kSize, |
| 1639 | result, |
| 1640 | scratch1, |
| 1641 | scratch2, |
| 1642 | gc_required, |
| 1643 | TAG_OBJECT); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1644 | |
| 1645 | // Set the map. The other fields are left uninitialized. |
| 1646 | mov(FieldOperand(result, HeapObject::kMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1647 | Immediate(isolate()->factory()->cons_one_byte_string_map())); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1648 | } |
| 1649 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1650 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1651 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1652 | Register scratch1, |
| 1653 | Register scratch2, |
| 1654 | Label* gc_required) { |
| 1655 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1656 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 1657 | TAG_OBJECT); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1658 | |
| 1659 | // Set the map. The other fields are left uninitialized. |
| 1660 | mov(FieldOperand(result, HeapObject::kMapOffset), |
| 1661 | Immediate(isolate()->factory()->sliced_string_map())); |
| 1662 | } |
| 1663 | |
| 1664 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1665 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 1666 | Register scratch1, |
| 1667 | Register scratch2, |
| 1668 | Label* gc_required) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1669 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1670 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 1671 | TAG_OBJECT); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1672 | |
| 1673 | // Set the map. The other fields are left uninitialized. |
| 1674 | mov(FieldOperand(result, HeapObject::kMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1675 | Immediate(isolate()->factory()->sliced_one_byte_string_map())); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1676 | } |
| 1677 | |
| 1678 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1679 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 1680 | Register value, Register scratch, |
| 1681 | Label* gc_required) { |
| 1682 | DCHECK(!result.is(constructor)); |
| 1683 | DCHECK(!result.is(scratch)); |
| 1684 | DCHECK(!result.is(value)); |
| 1685 | |
| 1686 | // Allocate JSValue in new space. |
| 1687 | Allocate(JSValue::kSize, result, scratch, no_reg, gc_required, TAG_OBJECT); |
| 1688 | |
| 1689 | // Initialize the JSValue. |
| 1690 | LoadGlobalFunctionInitialMap(constructor, scratch); |
| 1691 | mov(FieldOperand(result, HeapObject::kMapOffset), scratch); |
| 1692 | LoadRoot(scratch, Heap::kEmptyFixedArrayRootIndex); |
| 1693 | mov(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 1694 | mov(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 1695 | mov(FieldOperand(result, JSValue::kValueOffset), value); |
| 1696 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
| 1697 | } |
| 1698 | |
| 1699 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1700 | // Copy memory, byte-by-byte, from source to destination. Not optimized for |
| 1701 | // long or aligned copies. The contents of scratch and length are destroyed. |
| 1702 | // Source and destination are incremented by length. |
| 1703 | // Many variants of movsb, loop unrolling, word moves, and indexed operands |
| 1704 | // have been tried here already, and this is fastest. |
| 1705 | // A simpler loop is faster on small copies, but 30% slower on large ones. |
| 1706 | // The cld() instruction must have been emitted, to set the direction flag(), |
| 1707 | // before calling this function. |
| 1708 | void MacroAssembler::CopyBytes(Register source, |
| 1709 | Register destination, |
| 1710 | Register length, |
| 1711 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1712 | Label short_loop, len4, len8, len12, done, short_string; |
| 1713 | DCHECK(source.is(esi)); |
| 1714 | DCHECK(destination.is(edi)); |
| 1715 | DCHECK(length.is(ecx)); |
| 1716 | cmp(length, Immediate(4)); |
| 1717 | j(below, &short_string, Label::kNear); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1718 | |
| 1719 | // Because source is 4-byte aligned in our uses of this function, |
| 1720 | // we keep source aligned for the rep_movs call by copying the odd bytes |
| 1721 | // at the end of the ranges. |
| 1722 | mov(scratch, Operand(source, length, times_1, -4)); |
| 1723 | mov(Operand(destination, length, times_1, -4), scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1724 | |
| 1725 | cmp(length, Immediate(8)); |
| 1726 | j(below_equal, &len4, Label::kNear); |
| 1727 | cmp(length, Immediate(12)); |
| 1728 | j(below_equal, &len8, Label::kNear); |
| 1729 | cmp(length, Immediate(16)); |
| 1730 | j(below_equal, &len12, Label::kNear); |
| 1731 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1732 | mov(scratch, ecx); |
| 1733 | shr(ecx, 2); |
| 1734 | rep_movs(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1735 | and_(scratch, Immediate(0x3)); |
| 1736 | add(destination, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1737 | jmp(&done, Label::kNear); |
| 1738 | |
| 1739 | bind(&len12); |
| 1740 | mov(scratch, Operand(source, 8)); |
| 1741 | mov(Operand(destination, 8), scratch); |
| 1742 | bind(&len8); |
| 1743 | mov(scratch, Operand(source, 4)); |
| 1744 | mov(Operand(destination, 4), scratch); |
| 1745 | bind(&len4); |
| 1746 | mov(scratch, Operand(source, 0)); |
| 1747 | mov(Operand(destination, 0), scratch); |
| 1748 | add(destination, length); |
| 1749 | jmp(&done, Label::kNear); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1750 | |
| 1751 | bind(&short_string); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1752 | test(length, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1753 | j(zero, &done, Label::kNear); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1754 | |
| 1755 | bind(&short_loop); |
| 1756 | mov_b(scratch, Operand(source, 0)); |
| 1757 | mov_b(Operand(destination, 0), scratch); |
| 1758 | inc(source); |
| 1759 | inc(destination); |
| 1760 | dec(length); |
| 1761 | j(not_zero, &short_loop); |
| 1762 | |
| 1763 | bind(&done); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1764 | } |
| 1765 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1766 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1767 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 1768 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1769 | Register filler) { |
| 1770 | Label loop, entry; |
| 1771 | jmp(&entry); |
| 1772 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1773 | mov(Operand(current_address, 0), filler); |
| 1774 | add(current_address, Immediate(kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1775 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1776 | cmp(current_address, end_address); |
| 1777 | j(below, &loop); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1778 | } |
| 1779 | |
| 1780 | |
| 1781 | void MacroAssembler::BooleanBitTest(Register object, |
| 1782 | int field_offset, |
| 1783 | int bit_index) { |
| 1784 | bit_index += kSmiTagSize + kSmiShiftSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1785 | DCHECK(base::bits::IsPowerOfTwo32(kBitsPerByte)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1786 | int byte_index = bit_index / kBitsPerByte; |
| 1787 | int byte_bit_index = bit_index & (kBitsPerByte - 1); |
| 1788 | test_b(FieldOperand(object, field_offset + byte_index), |
| 1789 | static_cast<byte>(1 << byte_bit_index)); |
| 1790 | } |
| 1791 | |
| 1792 | |
| 1793 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1794 | void MacroAssembler::NegativeZeroTest(Register result, |
| 1795 | Register op, |
| 1796 | Label* then_label) { |
| 1797 | Label ok; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1798 | test(result, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1799 | j(not_zero, &ok); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1800 | test(op, op); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1801 | j(sign, then_label); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1802 | bind(&ok); |
| 1803 | } |
| 1804 | |
| 1805 | |
| 1806 | void MacroAssembler::NegativeZeroTest(Register result, |
| 1807 | Register op1, |
| 1808 | Register op2, |
| 1809 | Register scratch, |
| 1810 | Label* then_label) { |
| 1811 | Label ok; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1812 | test(result, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1813 | j(not_zero, &ok); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1814 | mov(scratch, op1); |
| 1815 | or_(scratch, op2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1816 | j(sign, then_label); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1817 | bind(&ok); |
| 1818 | } |
| 1819 | |
| 1820 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1821 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 1822 | Register temp) { |
| 1823 | Label done, loop; |
| 1824 | mov(result, FieldOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 1825 | bind(&loop); |
| 1826 | JumpIfSmi(result, &done, Label::kNear); |
| 1827 | CmpObjectType(result, MAP_TYPE, temp); |
| 1828 | j(not_equal, &done, Label::kNear); |
| 1829 | mov(result, FieldOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 1830 | jmp(&loop); |
| 1831 | bind(&done); |
| 1832 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1833 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1834 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1835 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 1836 | Register scratch, Label* miss) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1837 | // Get the prototype or initial map from the function. |
| 1838 | mov(result, |
| 1839 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1840 | |
| 1841 | // If the prototype or initial map is the hole, don't return it and |
| 1842 | // simply miss the cache instead. This will allow us to allocate a |
| 1843 | // prototype object on-demand in the runtime system. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1844 | cmp(result, Immediate(isolate()->factory()->the_hole_value())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1845 | j(equal, miss); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1846 | |
| 1847 | // If the function does not have an initial map, we're done. |
| 1848 | Label done; |
| 1849 | CmpObjectType(result, MAP_TYPE, scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1850 | j(not_equal, &done, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1851 | |
| 1852 | // Get the prototype from the initial map. |
| 1853 | mov(result, FieldOperand(result, Map::kPrototypeOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1854 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1855 | // All done. |
| 1856 | bind(&done); |
| 1857 | } |
| 1858 | |
| 1859 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1860 | void MacroAssembler::CallStub(CodeStub* stub, TypeFeedbackId ast_id) { |
| 1861 | DCHECK(AllowThisStubCall(stub)); // Calls are not allowed in some stubs. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1862 | call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1863 | } |
| 1864 | |
| 1865 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1866 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1867 | jmp(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 1868 | } |
| 1869 | |
| 1870 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1871 | void MacroAssembler::StubReturn(int argc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1872 | DCHECK(argc >= 1 && generating_stub()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1873 | ret((argc - 1) * kPointerSize); |
| 1874 | } |
| 1875 | |
| 1876 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1877 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1878 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1879 | } |
| 1880 | |
| 1881 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1882 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
| 1883 | // The assert checks that the constants for the maximum number of digits |
| 1884 | // for an array index cached in the hash field and the number of bits |
| 1885 | // reserved for it does not conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1886 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1887 | (1 << String::kArrayIndexValueBits)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1888 | if (!index.is(hash)) { |
| 1889 | mov(index, hash); |
| 1890 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1891 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1892 | } |
| 1893 | |
| 1894 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1895 | void MacroAssembler::CallRuntime(const Runtime::Function* f, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1896 | int num_arguments, |
| 1897 | SaveFPRegsMode save_doubles) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1898 | // If the expected number of arguments of the runtime function is |
| 1899 | // constant, we check that the actual number of arguments match the |
| 1900 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1901 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1902 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 1903 | // TODO(1236192): Most runtime routines don't need the number of |
| 1904 | // arguments passed in because it is constant. At some point we |
| 1905 | // should remove this need and make the runtime routine entry code |
| 1906 | // smarter. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1907 | Move(eax, Immediate(num_arguments)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1908 | mov(ebx, Immediate(ExternalReference(f, isolate()))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1909 | CEntryStub ces(isolate(), 1, save_doubles); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 1910 | CallStub(&ces); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1911 | } |
| 1912 | |
| 1913 | |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1914 | void MacroAssembler::CallExternalReference(ExternalReference ref, |
| 1915 | int num_arguments) { |
| 1916 | mov(eax, Immediate(num_arguments)); |
| 1917 | mov(ebx, Immediate(ref)); |
| 1918 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1919 | CEntryStub stub(isolate(), 1); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1920 | CallStub(&stub); |
| 1921 | } |
| 1922 | |
| 1923 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1924 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
| 1925 | // ----------- S t a t e ------------- |
| 1926 | // -- esp[0] : return address |
| 1927 | // -- esp[8] : argument num_arguments - 1 |
| 1928 | // ... |
| 1929 | // -- esp[8 * num_arguments] : argument 0 (receiver) |
| 1930 | // |
| 1931 | // For runtime functions with variable arguments: |
| 1932 | // -- eax : number of arguments |
| 1933 | // ----------------------------------- |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1934 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1935 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 1936 | DCHECK_EQ(1, function->result_size); |
| 1937 | if (function->nargs >= 0) { |
| 1938 | // TODO(1236192): Most runtime routines don't need the number of |
| 1939 | // arguments passed in because it is constant. At some point we |
| 1940 | // should remove this need and make the runtime routine entry code |
| 1941 | // smarter. |
| 1942 | mov(eax, Immediate(function->nargs)); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1943 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1944 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1945 | } |
| 1946 | |
| 1947 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1948 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1949 | // Set the entry point and jump to the C entry runtime stub. |
| 1950 | mov(ebx, Immediate(ext)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1951 | CEntryStub ces(isolate(), 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1952 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
| 1953 | } |
| 1954 | |
| 1955 | |
| 1956 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 1957 | const ParameterCount& actual, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1958 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1959 | bool* definitely_mismatches, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1960 | InvokeFlag flag, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1961 | Label::Distance done_near, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1962 | const CallWrapper& call_wrapper) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1963 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1964 | *definitely_mismatches = false; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1965 | Label invoke; |
| 1966 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1967 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1968 | mov(eax, actual.immediate()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1969 | if (expected.immediate() == actual.immediate()) { |
| 1970 | definitely_matches = true; |
| 1971 | } else { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1972 | const int sentinel = SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 1973 | if (expected.immediate() == sentinel) { |
| 1974 | // Don't worry about adapting arguments for builtins that |
| 1975 | // don't want that done. Skip adaption code by making it look |
| 1976 | // like we have a match between expected and actual number of |
| 1977 | // arguments. |
| 1978 | definitely_matches = true; |
| 1979 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1980 | *definitely_mismatches = true; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1981 | mov(ebx, expected.immediate()); |
| 1982 | } |
| 1983 | } |
| 1984 | } else { |
| 1985 | if (actual.is_immediate()) { |
| 1986 | // Expected is in register, actual is immediate. This is the |
| 1987 | // case when we invoke function values without going through the |
| 1988 | // IC mechanism. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1989 | mov(eax, actual.immediate()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1990 | cmp(expected.reg(), actual.immediate()); |
| 1991 | j(equal, &invoke); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1992 | DCHECK(expected.reg().is(ebx)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1993 | } else if (!expected.reg().is(actual.reg())) { |
| 1994 | // Both expected and actual are in (different) registers. This |
| 1995 | // is the case when we invoke functions using call and apply. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1996 | cmp(expected.reg(), actual.reg()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1997 | j(equal, &invoke); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1998 | DCHECK(actual.reg().is(eax)); |
| 1999 | DCHECK(expected.reg().is(ebx)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2000 | } else { |
| 2001 | Move(eax, actual.reg()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2002 | } |
| 2003 | } |
| 2004 | |
| 2005 | if (!definitely_matches) { |
| 2006 | Handle<Code> adaptor = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2007 | isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2008 | if (flag == CALL_FUNCTION) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2009 | call_wrapper.BeforeCall(CallSize(adaptor, RelocInfo::CODE_TARGET)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2010 | call(adaptor, RelocInfo::CODE_TARGET); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2011 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2012 | if (!*definitely_mismatches) { |
| 2013 | jmp(done, done_near); |
| 2014 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2015 | } else { |
| 2016 | jmp(adaptor, RelocInfo::CODE_TARGET); |
| 2017 | } |
| 2018 | bind(&invoke); |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2023 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 2024 | const ParameterCount& expected, |
| 2025 | const ParameterCount& actual) { |
| 2026 | Label skip_flooding; |
| 2027 | ExternalReference step_in_enabled = |
| 2028 | ExternalReference::debug_step_in_enabled_address(isolate()); |
| 2029 | cmpb(Operand::StaticVariable(step_in_enabled), 0); |
| 2030 | j(equal, &skip_flooding); |
| 2031 | { |
| 2032 | FrameScope frame(this, |
| 2033 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 2034 | if (expected.is_reg()) { |
| 2035 | SmiTag(expected.reg()); |
| 2036 | Push(expected.reg()); |
| 2037 | } |
| 2038 | if (actual.is_reg()) { |
| 2039 | SmiTag(actual.reg()); |
| 2040 | Push(actual.reg()); |
| 2041 | } |
| 2042 | if (new_target.is_valid()) { |
| 2043 | Push(new_target); |
| 2044 | } |
| 2045 | Push(fun); |
| 2046 | Push(fun); |
| 2047 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping, 1); |
| 2048 | Pop(fun); |
| 2049 | if (new_target.is_valid()) { |
| 2050 | Pop(new_target); |
| 2051 | } |
| 2052 | if (actual.is_reg()) { |
| 2053 | Pop(actual.reg()); |
| 2054 | SmiUntag(actual.reg()); |
| 2055 | } |
| 2056 | if (expected.is_reg()) { |
| 2057 | Pop(expected.reg()); |
| 2058 | SmiUntag(expected.reg()); |
| 2059 | } |
| 2060 | } |
| 2061 | bind(&skip_flooding); |
| 2062 | } |
| 2063 | |
| 2064 | |
| 2065 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 2066 | const ParameterCount& expected, |
| 2067 | const ParameterCount& actual, |
| 2068 | InvokeFlag flag, |
| 2069 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2070 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2071 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2072 | DCHECK(function.is(edi)); |
| 2073 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(edx)); |
| 2074 | |
| 2075 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 2076 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 2077 | } |
| 2078 | |
| 2079 | // Clear the new.target register if not given. |
| 2080 | if (!new_target.is_valid()) { |
| 2081 | mov(edx, isolate()->factory()->undefined_value()); |
| 2082 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2083 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2084 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2085 | bool definitely_mismatches = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2086 | InvokePrologue(expected, actual, &done, &definitely_mismatches, flag, |
| 2087 | Label::kNear, call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2088 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2089 | // We call indirectly through the code field in the function to |
| 2090 | // allow recompilation to take effect without changing any of the |
| 2091 | // call sites. |
| 2092 | Operand code = FieldOperand(function, JSFunction::kCodeEntryOffset); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2093 | if (flag == CALL_FUNCTION) { |
| 2094 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2095 | call(code); |
| 2096 | call_wrapper.AfterCall(); |
| 2097 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2098 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2099 | jmp(code); |
| 2100 | } |
| 2101 | bind(&done); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2102 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2106 | void MacroAssembler::InvokeFunction(Register fun, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2107 | Register new_target, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2108 | const ParameterCount& actual, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2109 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2110 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2111 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2112 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2113 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2114 | DCHECK(fun.is(edi)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2115 | mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2116 | mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2117 | mov(ebx, FieldOperand(ebx, SharedFunctionInfo::kFormalParameterCountOffset)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 2118 | SmiUntag(ebx); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2119 | |
| 2120 | ParameterCount expected(ebx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2121 | InvokeFunctionCode(edi, new_target, expected, actual, flag, call_wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2122 | } |
| 2123 | |
| 2124 | |
| 2125 | void MacroAssembler::InvokeFunction(Register fun, |
| 2126 | const ParameterCount& expected, |
| 2127 | const ParameterCount& actual, |
| 2128 | InvokeFlag flag, |
| 2129 | const CallWrapper& call_wrapper) { |
| 2130 | // You can't call a function without a valid frame. |
| 2131 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
| 2132 | |
| 2133 | DCHECK(fun.is(edi)); |
| 2134 | mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| 2135 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2136 | InvokeFunctionCode(edi, no_reg, expected, actual, flag, call_wrapper); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2137 | } |
| 2138 | |
| 2139 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2140 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2141 | const ParameterCount& expected, |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 2142 | const ParameterCount& actual, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2143 | InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2144 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2145 | LoadHeapObject(edi, function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2146 | InvokeFunction(edi, expected, actual, flag, call_wrapper); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 2147 | } |
| 2148 | |
| 2149 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2150 | void MacroAssembler::InvokeBuiltin(int native_context_index, InvokeFlag flag, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2151 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2152 | // You can't call a builtin without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2153 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2154 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2155 | // Fake a parameter count to avoid emitting code to do the check. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2156 | ParameterCount expected(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2157 | GetBuiltinFunction(edi, native_context_index); |
| 2158 | InvokeFunctionCode(edi, no_reg, expected, expected, flag, call_wrapper); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2159 | } |
| 2160 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2161 | |
Steve Block | 791712a | 2010-08-27 10:21:07 +0100 | [diff] [blame] | 2162 | void MacroAssembler::GetBuiltinFunction(Register target, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2163 | int native_context_index) { |
Steve Block | 791712a | 2010-08-27 10:21:07 +0100 | [diff] [blame] | 2164 | // Load the JavaScript builtin function from the builtins object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2165 | mov(target, NativeContextOperand()); |
| 2166 | mov(target, ContextOperand(target, native_context_index)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2167 | } |
| 2168 | |
| 2169 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 2170 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 2171 | if (context_chain_length > 0) { |
| 2172 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2173 | mov(dst, Operand(esi, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 2174 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2175 | mov(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 2176 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2177 | } else { |
| 2178 | // Slot is in the current function context. Move it into the |
| 2179 | // destination register in case we store into it (the write barrier |
| 2180 | // cannot be allowed to destroy the context in esi). |
| 2181 | mov(dst, esi); |
| 2182 | } |
| 2183 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2184 | // We should not have found a with context by walking the context chain |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2185 | // (i.e., the static scope chain and runtime context chain do not agree). |
| 2186 | // A variable occurring in such a scope should have slot type LOOKUP and |
| 2187 | // not CONTEXT. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2188 | if (emit_debug_code()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2189 | cmp(FieldOperand(dst, HeapObject::kMapOffset), |
| 2190 | isolate()->factory()->with_context_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2191 | Check(not_equal, kVariableResolvedToWithContext); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 2192 | } |
| 2193 | } |
| 2194 | |
| 2195 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2196 | void MacroAssembler::LoadGlobalProxy(Register dst) { |
| 2197 | mov(dst, NativeContextOperand()); |
| 2198 | mov(dst, ContextOperand(dst, Context::GLOBAL_PROXY_INDEX)); |
| 2199 | } |
| 2200 | |
| 2201 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2202 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 2203 | ElementsKind expected_kind, |
| 2204 | ElementsKind transitioned_kind, |
| 2205 | Register map_in_out, |
| 2206 | Register scratch, |
| 2207 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2208 | DCHECK(IsFastElementsKind(expected_kind)); |
| 2209 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2210 | |
| 2211 | // Check that the function's map is the same as the expected cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2212 | mov(scratch, NativeContextOperand()); |
| 2213 | cmp(map_in_out, |
| 2214 | ContextOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2215 | j(not_equal, no_map_match); |
| 2216 | |
| 2217 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2218 | mov(map_in_out, |
| 2219 | ContextOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2220 | } |
| 2221 | |
| 2222 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2223 | void MacroAssembler::LoadGlobalFunction(int index, Register function) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2224 | // Load the native context from the current context. |
| 2225 | mov(function, NativeContextOperand()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2226 | // Load the function from the native context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2227 | mov(function, ContextOperand(function, index)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2228 | } |
| 2229 | |
| 2230 | |
| 2231 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 2232 | Register map) { |
| 2233 | // Load the initial map. The global functions all have initial maps. |
| 2234 | mov(map, FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2235 | if (emit_debug_code()) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2236 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2237 | CheckMap(map, isolate()->factory()->meta_map(), &fail, DO_SMI_CHECK); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2238 | jmp(&ok); |
| 2239 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2240 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2241 | bind(&ok); |
| 2242 | } |
| 2243 | } |
| 2244 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 2245 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2246 | // Store the value in register src in the safepoint register stack |
| 2247 | // slot for register dst. |
| 2248 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) { |
| 2249 | mov(SafepointRegisterSlot(dst), src); |
| 2250 | } |
| 2251 | |
| 2252 | |
| 2253 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Immediate src) { |
| 2254 | mov(SafepointRegisterSlot(dst), src); |
| 2255 | } |
| 2256 | |
| 2257 | |
| 2258 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
| 2259 | mov(dst, SafepointRegisterSlot(src)); |
| 2260 | } |
| 2261 | |
| 2262 | |
| 2263 | Operand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 2264 | return Operand(esp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 2265 | } |
| 2266 | |
| 2267 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2268 | int MacroAssembler::SafepointRegisterStackIndex(int reg_code) { |
| 2269 | // The registers are pushed starting with the lowest encoding, |
| 2270 | // which means that lowest encodings are furthest away from |
| 2271 | // the stack pointer. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2272 | DCHECK(reg_code >= 0 && reg_code < kNumSafepointRegisters); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2273 | return kNumSafepointRegisters - reg_code - 1; |
| 2274 | } |
| 2275 | |
| 2276 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2277 | void MacroAssembler::LoadHeapObject(Register result, |
| 2278 | Handle<HeapObject> object) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2279 | AllowDeferredHandleDereference embedding_raw_address; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2280 | if (isolate()->heap()->InNewSpace(*object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2281 | Handle<Cell> cell = isolate()->factory()->NewCell(object); |
| 2282 | mov(result, Operand::ForCell(cell)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2283 | } else { |
| 2284 | mov(result, object); |
| 2285 | } |
| 2286 | } |
| 2287 | |
| 2288 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2289 | void MacroAssembler::CmpHeapObject(Register reg, Handle<HeapObject> object) { |
| 2290 | AllowDeferredHandleDereference using_raw_address; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2291 | if (isolate()->heap()->InNewSpace(*object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2292 | Handle<Cell> cell = isolate()->factory()->NewCell(object); |
| 2293 | cmp(reg, Operand::ForCell(cell)); |
| 2294 | } else { |
| 2295 | cmp(reg, object); |
| 2296 | } |
| 2297 | } |
| 2298 | |
| 2299 | |
| 2300 | void MacroAssembler::PushHeapObject(Handle<HeapObject> object) { |
| 2301 | AllowDeferredHandleDereference using_raw_address; |
| 2302 | if (isolate()->heap()->InNewSpace(*object)) { |
| 2303 | Handle<Cell> cell = isolate()->factory()->NewCell(object); |
| 2304 | push(Operand::ForCell(cell)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2305 | } else { |
| 2306 | Push(object); |
| 2307 | } |
| 2308 | } |
| 2309 | |
| 2310 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2311 | void MacroAssembler::CmpWeakValue(Register value, Handle<WeakCell> cell, |
| 2312 | Register scratch) { |
| 2313 | mov(scratch, cell); |
| 2314 | cmp(value, FieldOperand(scratch, WeakCell::kValueOffset)); |
| 2315 | } |
| 2316 | |
| 2317 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2318 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2319 | mov(value, cell); |
| 2320 | mov(value, FieldOperand(value, WeakCell::kValueOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2321 | } |
| 2322 | |
| 2323 | |
| 2324 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 2325 | Label* miss) { |
| 2326 | GetWeakValue(value, cell); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2327 | JumpIfSmi(value, miss); |
| 2328 | } |
| 2329 | |
| 2330 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2331 | void MacroAssembler::Ret() { |
| 2332 | ret(0); |
| 2333 | } |
| 2334 | |
| 2335 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2336 | void MacroAssembler::Ret(int bytes_dropped, Register scratch) { |
| 2337 | if (is_uint16(bytes_dropped)) { |
| 2338 | ret(bytes_dropped); |
| 2339 | } else { |
| 2340 | pop(scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2341 | add(esp, Immediate(bytes_dropped)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2342 | push(scratch); |
| 2343 | ret(0); |
| 2344 | } |
| 2345 | } |
| 2346 | |
| 2347 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 2348 | void MacroAssembler::Drop(int stack_elements) { |
| 2349 | if (stack_elements > 0) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2350 | add(esp, Immediate(stack_elements * kPointerSize)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 2351 | } |
| 2352 | } |
| 2353 | |
| 2354 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2355 | void MacroAssembler::Move(Register dst, Register src) { |
| 2356 | if (!dst.is(src)) { |
| 2357 | mov(dst, src); |
| 2358 | } |
| 2359 | } |
| 2360 | |
| 2361 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2362 | void MacroAssembler::Move(Register dst, const Immediate& x) { |
| 2363 | if (x.is_zero()) { |
| 2364 | xor_(dst, dst); // Shorter than mov of 32-bit immediate 0. |
| 2365 | } else { |
| 2366 | mov(dst, x); |
| 2367 | } |
| 2368 | } |
| 2369 | |
| 2370 | |
| 2371 | void MacroAssembler::Move(const Operand& dst, const Immediate& x) { |
| 2372 | mov(dst, x); |
| 2373 | } |
| 2374 | |
| 2375 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2376 | void MacroAssembler::Move(XMMRegister dst, uint32_t src) { |
| 2377 | if (src == 0) { |
| 2378 | pxor(dst, dst); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2379 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2380 | unsigned cnt = base::bits::CountPopulation32(src); |
| 2381 | unsigned nlz = base::bits::CountLeadingZeros32(src); |
| 2382 | unsigned ntz = base::bits::CountTrailingZeros32(src); |
| 2383 | if (nlz + cnt + ntz == 32) { |
| 2384 | pcmpeqd(dst, dst); |
| 2385 | if (ntz == 0) { |
| 2386 | psrld(dst, 32 - cnt); |
| 2387 | } else { |
| 2388 | pslld(dst, 32 - cnt); |
| 2389 | if (nlz != 0) psrld(dst, nlz); |
| 2390 | } |
| 2391 | } else { |
| 2392 | push(eax); |
| 2393 | mov(eax, Immediate(src)); |
| 2394 | movd(dst, Operand(eax)); |
| 2395 | pop(eax); |
| 2396 | } |
| 2397 | } |
| 2398 | } |
| 2399 | |
| 2400 | |
| 2401 | void MacroAssembler::Move(XMMRegister dst, uint64_t src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2402 | if (src == 0) { |
| 2403 | pxor(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2404 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2405 | uint32_t lower = static_cast<uint32_t>(src); |
| 2406 | uint32_t upper = static_cast<uint32_t>(src >> 32); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2407 | unsigned cnt = base::bits::CountPopulation64(src); |
| 2408 | unsigned nlz = base::bits::CountLeadingZeros64(src); |
| 2409 | unsigned ntz = base::bits::CountTrailingZeros64(src); |
| 2410 | if (nlz + cnt + ntz == 64) { |
| 2411 | pcmpeqd(dst, dst); |
| 2412 | if (ntz == 0) { |
| 2413 | psrlq(dst, 64 - cnt); |
| 2414 | } else { |
| 2415 | psllq(dst, 64 - cnt); |
| 2416 | if (nlz != 0) psrlq(dst, nlz); |
| 2417 | } |
| 2418 | } else if (lower == 0) { |
| 2419 | Move(dst, upper); |
| 2420 | psllq(dst, 32); |
| 2421 | } else if (CpuFeatures::IsSupported(SSE4_1)) { |
| 2422 | CpuFeatureScope scope(this, SSE4_1); |
| 2423 | push(eax); |
| 2424 | Move(eax, Immediate(lower)); |
| 2425 | movd(dst, Operand(eax)); |
| 2426 | Move(eax, Immediate(upper)); |
| 2427 | pinsrd(dst, Operand(eax), 1); |
| 2428 | pop(eax); |
| 2429 | } else { |
| 2430 | push(Immediate(upper)); |
| 2431 | push(Immediate(lower)); |
| 2432 | movsd(dst, Operand(esp, 0)); |
| 2433 | add(esp, Immediate(kDoubleSize)); |
| 2434 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2435 | } |
| 2436 | } |
| 2437 | |
| 2438 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2439 | void MacroAssembler::Pextrd(Register dst, XMMRegister src, int8_t imm8) { |
| 2440 | if (imm8 == 0) { |
| 2441 | movd(dst, src); |
| 2442 | return; |
| 2443 | } |
| 2444 | DCHECK_EQ(1, imm8); |
| 2445 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 2446 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 2447 | pextrd(dst, src, imm8); |
| 2448 | return; |
| 2449 | } |
| 2450 | pshufd(xmm0, src, 1); |
| 2451 | movd(dst, xmm0); |
| 2452 | } |
| 2453 | |
| 2454 | |
| 2455 | void MacroAssembler::Pinsrd(XMMRegister dst, const Operand& src, int8_t imm8) { |
| 2456 | DCHECK(imm8 == 0 || imm8 == 1); |
| 2457 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 2458 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 2459 | pinsrd(dst, src, imm8); |
| 2460 | return; |
| 2461 | } |
| 2462 | movd(xmm0, src); |
| 2463 | if (imm8 == 1) { |
| 2464 | punpckldq(dst, xmm0); |
| 2465 | } else { |
| 2466 | DCHECK_EQ(0, imm8); |
| 2467 | psrlq(dst, 32); |
| 2468 | punpckldq(xmm0, dst); |
| 2469 | movaps(dst, xmm0); |
| 2470 | } |
| 2471 | } |
| 2472 | |
| 2473 | |
| 2474 | void MacroAssembler::Lzcnt(Register dst, const Operand& src) { |
| 2475 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 2476 | CpuFeatureScope scope(this, LZCNT); |
| 2477 | lzcnt(dst, src); |
| 2478 | return; |
| 2479 | } |
| 2480 | Label not_zero_src; |
| 2481 | bsr(dst, src); |
| 2482 | j(not_zero, ¬_zero_src, Label::kNear); |
| 2483 | Move(dst, Immediate(63)); // 63^31 == 32 |
| 2484 | bind(¬_zero_src); |
| 2485 | xor_(dst, Immediate(31)); // for x in [0..31], 31^x == 31-x. |
| 2486 | } |
| 2487 | |
| 2488 | |
| 2489 | void MacroAssembler::Tzcnt(Register dst, const Operand& src) { |
| 2490 | if (CpuFeatures::IsSupported(BMI1)) { |
| 2491 | CpuFeatureScope scope(this, BMI1); |
| 2492 | tzcnt(dst, src); |
| 2493 | return; |
| 2494 | } |
| 2495 | Label not_zero_src; |
| 2496 | bsf(dst, src); |
| 2497 | j(not_zero, ¬_zero_src, Label::kNear); |
| 2498 | Move(dst, Immediate(32)); // The result of tzcnt is 32 if src = 0. |
| 2499 | bind(¬_zero_src); |
| 2500 | } |
| 2501 | |
| 2502 | |
| 2503 | void MacroAssembler::Popcnt(Register dst, const Operand& src) { |
| 2504 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 2505 | CpuFeatureScope scope(this, POPCNT); |
| 2506 | popcnt(dst, src); |
| 2507 | return; |
| 2508 | } |
| 2509 | UNREACHABLE(); |
| 2510 | } |
| 2511 | |
| 2512 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2513 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 2514 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2515 | mov(Operand::StaticVariable(ExternalReference(counter)), Immediate(value)); |
| 2516 | } |
| 2517 | } |
| 2518 | |
| 2519 | |
| 2520 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2521 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2522 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2523 | Operand operand = Operand::StaticVariable(ExternalReference(counter)); |
| 2524 | if (value == 1) { |
| 2525 | inc(operand); |
| 2526 | } else { |
| 2527 | add(operand, Immediate(value)); |
| 2528 | } |
| 2529 | } |
| 2530 | } |
| 2531 | |
| 2532 | |
| 2533 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2534 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2535 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2536 | Operand operand = Operand::StaticVariable(ExternalReference(counter)); |
| 2537 | if (value == 1) { |
| 2538 | dec(operand); |
| 2539 | } else { |
| 2540 | sub(operand, Immediate(value)); |
| 2541 | } |
| 2542 | } |
| 2543 | } |
| 2544 | |
| 2545 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2546 | void MacroAssembler::IncrementCounter(Condition cc, |
| 2547 | StatsCounter* counter, |
| 2548 | int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2549 | DCHECK(value > 0); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2550 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2551 | Label skip; |
| 2552 | j(NegateCondition(cc), &skip); |
| 2553 | pushfd(); |
| 2554 | IncrementCounter(counter, value); |
| 2555 | popfd(); |
| 2556 | bind(&skip); |
| 2557 | } |
| 2558 | } |
| 2559 | |
| 2560 | |
| 2561 | void MacroAssembler::DecrementCounter(Condition cc, |
| 2562 | StatsCounter* counter, |
| 2563 | int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2564 | DCHECK(value > 0); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2565 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2566 | Label skip; |
| 2567 | j(NegateCondition(cc), &skip); |
| 2568 | pushfd(); |
| 2569 | DecrementCounter(counter, value); |
| 2570 | popfd(); |
| 2571 | bind(&skip); |
| 2572 | } |
| 2573 | } |
| 2574 | |
| 2575 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2576 | void MacroAssembler::Assert(Condition cc, BailoutReason reason) { |
| 2577 | if (emit_debug_code()) Check(cc, reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2578 | } |
| 2579 | |
| 2580 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 2581 | void MacroAssembler::AssertFastElements(Register elements) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2582 | if (emit_debug_code()) { |
| 2583 | Factory* factory = isolate()->factory(); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 2584 | Label ok; |
| 2585 | cmp(FieldOperand(elements, HeapObject::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2586 | Immediate(factory->fixed_array_map())); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 2587 | j(equal, &ok); |
| 2588 | cmp(FieldOperand(elements, HeapObject::kMapOffset), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2589 | Immediate(factory->fixed_double_array_map())); |
| 2590 | j(equal, &ok); |
| 2591 | cmp(FieldOperand(elements, HeapObject::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2592 | Immediate(factory->fixed_cow_array_map())); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 2593 | j(equal, &ok); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2594 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 2595 | bind(&ok); |
| 2596 | } |
| 2597 | } |
| 2598 | |
| 2599 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2600 | void MacroAssembler::Check(Condition cc, BailoutReason reason) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2601 | Label L; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2602 | j(cc, &L); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2603 | Abort(reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2604 | // will not return here |
| 2605 | bind(&L); |
| 2606 | } |
| 2607 | |
| 2608 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2609 | void MacroAssembler::CheckStackAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2610 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2611 | int frame_alignment_mask = frame_alignment - 1; |
| 2612 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2613 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2614 | Label alignment_as_expected; |
| 2615 | test(esp, Immediate(frame_alignment_mask)); |
| 2616 | j(zero, &alignment_as_expected); |
| 2617 | // Abort if stack is not aligned. |
| 2618 | int3(); |
| 2619 | bind(&alignment_as_expected); |
| 2620 | } |
| 2621 | } |
| 2622 | |
| 2623 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2624 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2625 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2626 | const char* msg = GetBailoutReason(reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2627 | if (msg != NULL) { |
| 2628 | RecordComment("Abort message: "); |
| 2629 | RecordComment(msg); |
| 2630 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2631 | |
| 2632 | if (FLAG_trap_on_abort) { |
| 2633 | int3(); |
| 2634 | return; |
| 2635 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2636 | #endif |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 2637 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2638 | push(Immediate(reinterpret_cast<intptr_t>(Smi::FromInt(reason)))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2639 | // Disable stub call restrictions to always allow calls to abort. |
| 2640 | if (!has_frame_) { |
| 2641 | // We don't actually want to generate a pile of code for this, so just |
| 2642 | // claim there is a stack frame, without generating one. |
| 2643 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2644 | CallRuntime(Runtime::kAbort, 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2645 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2646 | CallRuntime(Runtime::kAbort, 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2647 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2648 | // will not return here |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 2649 | int3(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2650 | } |
| 2651 | |
| 2652 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2653 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 2654 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2655 | mov(descriptors, FieldOperand(map, Map::kDescriptorsOffset)); |
| 2656 | } |
| 2657 | |
| 2658 | |
| 2659 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 2660 | mov(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 2661 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 2662 | } |
| 2663 | |
| 2664 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2665 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 2666 | int accessor_index, |
| 2667 | AccessorComponent accessor) { |
| 2668 | mov(dst, FieldOperand(holder, HeapObject::kMapOffset)); |
| 2669 | LoadInstanceDescriptors(dst, dst); |
| 2670 | mov(dst, FieldOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 2671 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 2672 | : AccessorPair::kSetterOffset; |
| 2673 | mov(dst, FieldOperand(dst, offset)); |
| 2674 | } |
| 2675 | |
| 2676 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2677 | void MacroAssembler::LoadPowerOf2(XMMRegister dst, |
| 2678 | Register scratch, |
| 2679 | int power) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2680 | DCHECK(is_uintn(power + HeapNumber::kExponentBias, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2681 | HeapNumber::kExponentBits)); |
| 2682 | mov(scratch, Immediate(power + HeapNumber::kExponentBias)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2683 | movd(dst, scratch); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2684 | psllq(dst, HeapNumber::kMantissaBits); |
| 2685 | } |
| 2686 | |
| 2687 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2688 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte( |
| 2689 | Register instance_type, Register scratch, Label* failure) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 2690 | if (!scratch.is(instance_type)) { |
| 2691 | mov(scratch, instance_type); |
| 2692 | } |
| 2693 | and_(scratch, |
| 2694 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2695 | cmp(scratch, kStringTag | kSeqStringTag | kOneByteStringTag); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 2696 | j(not_equal, failure); |
| 2697 | } |
| 2698 | |
| 2699 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2700 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings(Register object1, |
| 2701 | Register object2, |
| 2702 | Register scratch1, |
| 2703 | Register scratch2, |
| 2704 | Label* failure) { |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2705 | // Check that both objects are not smis. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2706 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2707 | mov(scratch1, object1); |
| 2708 | and_(scratch1, object2); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2709 | JumpIfSmi(scratch1, failure); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2710 | |
| 2711 | // Load instance type for both strings. |
| 2712 | mov(scratch1, FieldOperand(object1, HeapObject::kMapOffset)); |
| 2713 | mov(scratch2, FieldOperand(object2, HeapObject::kMapOffset)); |
| 2714 | movzx_b(scratch1, FieldOperand(scratch1, Map::kInstanceTypeOffset)); |
| 2715 | movzx_b(scratch2, FieldOperand(scratch2, Map::kInstanceTypeOffset)); |
| 2716 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2717 | // Check that both are flat one-byte strings. |
| 2718 | const int kFlatOneByteStringMask = |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2719 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2720 | const int kFlatOneByteStringTag = |
| 2721 | kStringTag | kOneByteStringTag | kSeqStringTag; |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2722 | // Interleave bits from both instance types and compare them in one check. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2723 | DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
| 2724 | and_(scratch1, kFlatOneByteStringMask); |
| 2725 | and_(scratch2, kFlatOneByteStringMask); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2726 | lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2727 | cmp(scratch1, kFlatOneByteStringTag | (kFlatOneByteStringTag << 3)); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 2728 | j(not_equal, failure); |
| 2729 | } |
| 2730 | |
| 2731 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2732 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Operand operand, |
| 2733 | Label* not_unique_name, |
| 2734 | Label::Distance distance) { |
| 2735 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 2736 | Label succeed; |
| 2737 | test(operand, Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 2738 | j(zero, &succeed); |
| 2739 | cmpb(operand, static_cast<uint8_t>(SYMBOL_TYPE)); |
| 2740 | j(not_equal, not_unique_name, distance); |
| 2741 | |
| 2742 | bind(&succeed); |
| 2743 | } |
| 2744 | |
| 2745 | |
| 2746 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 2747 | Register index, |
| 2748 | Register value, |
| 2749 | uint32_t encoding_mask) { |
| 2750 | Label is_object; |
| 2751 | JumpIfNotSmi(string, &is_object, Label::kNear); |
| 2752 | Abort(kNonObject); |
| 2753 | bind(&is_object); |
| 2754 | |
| 2755 | push(value); |
| 2756 | mov(value, FieldOperand(string, HeapObject::kMapOffset)); |
| 2757 | movzx_b(value, FieldOperand(value, Map::kInstanceTypeOffset)); |
| 2758 | |
| 2759 | and_(value, Immediate(kStringRepresentationMask | kStringEncodingMask)); |
| 2760 | cmp(value, Immediate(encoding_mask)); |
| 2761 | pop(value); |
| 2762 | Check(equal, kUnexpectedStringType); |
| 2763 | |
| 2764 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 2765 | // string length without using a temp register, it is restored at the end of |
| 2766 | // this function. |
| 2767 | SmiTag(index); |
| 2768 | Check(no_overflow, kIndexIsTooLarge); |
| 2769 | |
| 2770 | cmp(index, FieldOperand(string, String::kLengthOffset)); |
| 2771 | Check(less, kIndexIsTooLarge); |
| 2772 | |
| 2773 | cmp(index, Immediate(Smi::FromInt(0))); |
| 2774 | Check(greater_equal, kIndexIsNegative); |
| 2775 | |
| 2776 | // Restore the index |
| 2777 | SmiUntag(index); |
| 2778 | } |
| 2779 | |
| 2780 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2781 | void MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2782 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2783 | if (frame_alignment != 0) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2784 | // Make stack end at alignment and make room for num_arguments words |
| 2785 | // and the original value of esp. |
| 2786 | mov(scratch, esp); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2787 | sub(esp, Immediate((num_arguments + 1) * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2788 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2789 | and_(esp, -frame_alignment); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2790 | mov(Operand(esp, num_arguments * kPointerSize), scratch); |
| 2791 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2792 | sub(esp, Immediate(num_arguments * kPointerSize)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2793 | } |
| 2794 | } |
| 2795 | |
| 2796 | |
| 2797 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 2798 | int num_arguments) { |
| 2799 | // Trashing eax is ok as it will be the return value. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2800 | mov(eax, Immediate(function)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2801 | CallCFunction(eax, num_arguments); |
| 2802 | } |
| 2803 | |
| 2804 | |
| 2805 | void MacroAssembler::CallCFunction(Register function, |
| 2806 | int num_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2807 | DCHECK(has_frame()); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2808 | // Check stack alignment. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2809 | if (emit_debug_code()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2810 | CheckStackAlignment(); |
| 2811 | } |
| 2812 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2813 | call(function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2814 | if (base::OS::ActivationFrameAlignment() != 0) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2815 | mov(esp, Operand(esp, num_arguments * kPointerSize)); |
| 2816 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2817 | add(esp, Immediate(num_arguments * kPointerSize)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2818 | } |
| 2819 | } |
| 2820 | |
| 2821 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2822 | #ifdef DEBUG |
| 2823 | bool AreAliased(Register reg1, |
| 2824 | Register reg2, |
| 2825 | Register reg3, |
| 2826 | Register reg4, |
| 2827 | Register reg5, |
| 2828 | Register reg6, |
| 2829 | Register reg7, |
| 2830 | Register reg8) { |
| 2831 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + |
| 2832 | reg3.is_valid() + reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 2833 | reg7.is_valid() + reg8.is_valid(); |
| 2834 | |
| 2835 | RegList regs = 0; |
| 2836 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 2837 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 2838 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 2839 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 2840 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 2841 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 2842 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 2843 | if (reg8.is_valid()) regs |= reg8.bit(); |
| 2844 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 2845 | |
| 2846 | return n_of_valid_regs != n_of_non_aliasing_regs; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2847 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2848 | #endif |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2849 | |
| 2850 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2851 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int size) |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2852 | : address_(address), |
| 2853 | size_(size), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2854 | masm_(isolate, address, size + Assembler::kGap, CodeObjectRequired::kNo) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2855 | // Create a new macro assembler pointing to the address of the code to patch. |
| 2856 | // The size is adjusted with kGap on order for the assembler to generate size |
| 2857 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2858 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2859 | } |
| 2860 | |
| 2861 | |
| 2862 | CodePatcher::~CodePatcher() { |
| 2863 | // Indicate that code has changed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2864 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2865 | |
| 2866 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2867 | DCHECK(masm_.pc_ == address_ + size_); |
| 2868 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2869 | } |
| 2870 | |
| 2871 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2872 | void MacroAssembler::CheckPageFlag( |
| 2873 | Register object, |
| 2874 | Register scratch, |
| 2875 | int mask, |
| 2876 | Condition cc, |
| 2877 | Label* condition_met, |
| 2878 | Label::Distance condition_met_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2879 | DCHECK(cc == zero || cc == not_zero); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2880 | if (scratch.is(object)) { |
| 2881 | and_(scratch, Immediate(~Page::kPageAlignmentMask)); |
| 2882 | } else { |
| 2883 | mov(scratch, Immediate(~Page::kPageAlignmentMask)); |
| 2884 | and_(scratch, object); |
| 2885 | } |
| 2886 | if (mask < (1 << kBitsPerByte)) { |
| 2887 | test_b(Operand(scratch, MemoryChunk::kFlagsOffset), |
| 2888 | static_cast<uint8_t>(mask)); |
| 2889 | } else { |
| 2890 | test(Operand(scratch, MemoryChunk::kFlagsOffset), Immediate(mask)); |
| 2891 | } |
| 2892 | j(cc, condition_met, condition_met_distance); |
| 2893 | } |
| 2894 | |
| 2895 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2896 | void MacroAssembler::CheckPageFlagForMap( |
| 2897 | Handle<Map> map, |
| 2898 | int mask, |
| 2899 | Condition cc, |
| 2900 | Label* condition_met, |
| 2901 | Label::Distance condition_met_distance) { |
| 2902 | DCHECK(cc == zero || cc == not_zero); |
| 2903 | Page* page = Page::FromAddress(map->address()); |
| 2904 | DCHECK(!serializer_enabled()); // Serializer cannot match page_flags. |
| 2905 | ExternalReference reference(ExternalReference::page_flags(page)); |
| 2906 | // The inlined static address check of the page's flags relies |
| 2907 | // on maps never being compacted. |
| 2908 | DCHECK(!isolate()->heap()->mark_compact_collector()-> |
| 2909 | IsOnEvacuationCandidate(*map)); |
| 2910 | if (mask < (1 << kBitsPerByte)) { |
| 2911 | test_b(Operand::StaticVariable(reference), static_cast<uint8_t>(mask)); |
| 2912 | } else { |
| 2913 | test(Operand::StaticVariable(reference), Immediate(mask)); |
| 2914 | } |
| 2915 | j(cc, condition_met, condition_met_distance); |
| 2916 | } |
| 2917 | |
| 2918 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2919 | void MacroAssembler::JumpIfBlack(Register object, |
| 2920 | Register scratch0, |
| 2921 | Register scratch1, |
| 2922 | Label* on_black, |
| 2923 | Label::Distance on_black_near) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2924 | HasColor(object, scratch0, scratch1, on_black, on_black_near, 1, |
| 2925 | 1); // kBlackBitPattern. |
| 2926 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2927 | } |
| 2928 | |
| 2929 | |
| 2930 | void MacroAssembler::HasColor(Register object, |
| 2931 | Register bitmap_scratch, |
| 2932 | Register mask_scratch, |
| 2933 | Label* has_color, |
| 2934 | Label::Distance has_color_distance, |
| 2935 | int first_bit, |
| 2936 | int second_bit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2937 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, ecx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2938 | |
| 2939 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 2940 | |
| 2941 | Label other_color, word_boundary; |
| 2942 | test(mask_scratch, Operand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 2943 | j(first_bit == 1 ? zero : not_zero, &other_color, Label::kNear); |
| 2944 | add(mask_scratch, mask_scratch); // Shift left 1 by adding. |
| 2945 | j(zero, &word_boundary, Label::kNear); |
| 2946 | test(mask_scratch, Operand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 2947 | j(second_bit == 1 ? not_zero : zero, has_color, has_color_distance); |
| 2948 | jmp(&other_color, Label::kNear); |
| 2949 | |
| 2950 | bind(&word_boundary); |
| 2951 | test_b(Operand(bitmap_scratch, MemoryChunk::kHeaderSize + kPointerSize), 1); |
| 2952 | |
| 2953 | j(second_bit == 1 ? not_zero : zero, has_color, has_color_distance); |
| 2954 | bind(&other_color); |
| 2955 | } |
| 2956 | |
| 2957 | |
| 2958 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 2959 | Register bitmap_reg, |
| 2960 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2961 | DCHECK(!AreAliased(addr_reg, mask_reg, bitmap_reg, ecx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2962 | mov(bitmap_reg, Immediate(~Page::kPageAlignmentMask)); |
| 2963 | and_(bitmap_reg, addr_reg); |
| 2964 | mov(ecx, addr_reg); |
| 2965 | int shift = |
| 2966 | Bitmap::kBitsPerCellLog2 + kPointerSizeLog2 - Bitmap::kBytesPerCellLog2; |
| 2967 | shr(ecx, shift); |
| 2968 | and_(ecx, |
| 2969 | (Page::kPageAlignmentMask >> shift) & ~(Bitmap::kBytesPerCell - 1)); |
| 2970 | |
| 2971 | add(bitmap_reg, ecx); |
| 2972 | mov(ecx, addr_reg); |
| 2973 | shr(ecx, kPointerSizeLog2); |
| 2974 | and_(ecx, (1 << Bitmap::kBitsPerCellLog2) - 1); |
| 2975 | mov(mask_reg, Immediate(1)); |
| 2976 | shl_cl(mask_reg); |
| 2977 | } |
| 2978 | |
| 2979 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2980 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 2981 | Register mask_scratch, Label* value_is_white, |
| 2982 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2983 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, ecx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2984 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 2985 | |
| 2986 | // If the value is black or grey we don't need to do anything. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2987 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2988 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 2989 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2990 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2991 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2992 | // Since both black and grey have a 1 in the first position and white does |
| 2993 | // not have a 1 there we only need to check one bit. |
| 2994 | test(mask_scratch, Operand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2995 | j(zero, value_is_white, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2996 | } |
| 2997 | |
| 2998 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2999 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 3000 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 3001 | mov(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 3002 | and_(dst, Immediate(Map::EnumLengthBits::kMask)); |
| 3003 | SmiTag(dst); |
| 3004 | } |
| 3005 | |
| 3006 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3007 | void MacroAssembler::CheckEnumCache(Label* call_runtime) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3008 | Label next, start; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3009 | mov(ecx, eax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3010 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3011 | // Check if the enum length field is properly initialized, indicating that |
| 3012 | // there is an enum cache. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3013 | mov(ebx, FieldOperand(ecx, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3014 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3015 | EnumLength(edx, ebx); |
| 3016 | cmp(edx, Immediate(Smi::FromInt(kInvalidEnumCacheSentinel))); |
| 3017 | j(equal, call_runtime); |
| 3018 | |
| 3019 | jmp(&start); |
| 3020 | |
| 3021 | bind(&next); |
| 3022 | mov(ebx, FieldOperand(ecx, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3023 | |
| 3024 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3025 | EnumLength(edx, ebx); |
| 3026 | cmp(edx, Immediate(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3027 | j(not_equal, call_runtime); |
| 3028 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3029 | bind(&start); |
| 3030 | |
| 3031 | // Check that there are no elements. Register rcx contains the current JS |
| 3032 | // object we've reached through the prototype chain. |
| 3033 | Label no_elements; |
| 3034 | mov(ecx, FieldOperand(ecx, JSObject::kElementsOffset)); |
| 3035 | cmp(ecx, isolate()->factory()->empty_fixed_array()); |
| 3036 | j(equal, &no_elements); |
| 3037 | |
| 3038 | // Second chance, the object may be using the empty slow element dictionary. |
| 3039 | cmp(ecx, isolate()->factory()->empty_slow_element_dictionary()); |
| 3040 | j(not_equal, call_runtime); |
| 3041 | |
| 3042 | bind(&no_elements); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3043 | mov(ecx, FieldOperand(ebx, Map::kPrototypeOffset)); |
| 3044 | cmp(ecx, isolate()->factory()->null_value()); |
| 3045 | j(not_equal, &next); |
| 3046 | } |
| 3047 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3048 | |
| 3049 | void MacroAssembler::TestJSArrayForAllocationMemento( |
| 3050 | Register receiver_reg, |
| 3051 | Register scratch_reg, |
| 3052 | Label* no_memento_found) { |
| 3053 | ExternalReference new_space_start = |
| 3054 | ExternalReference::new_space_start(isolate()); |
| 3055 | ExternalReference new_space_allocation_top = |
| 3056 | ExternalReference::new_space_allocation_top_address(isolate()); |
| 3057 | |
| 3058 | lea(scratch_reg, Operand(receiver_reg, |
| 3059 | JSArray::kSize + AllocationMemento::kSize - kHeapObjectTag)); |
| 3060 | cmp(scratch_reg, Immediate(new_space_start)); |
| 3061 | j(less, no_memento_found); |
| 3062 | cmp(scratch_reg, Operand::StaticVariable(new_space_allocation_top)); |
| 3063 | j(greater, no_memento_found); |
| 3064 | cmp(MemOperand(scratch_reg, -AllocationMemento::kSize), |
| 3065 | Immediate(isolate()->factory()->allocation_memento_map())); |
| 3066 | } |
| 3067 | |
| 3068 | |
| 3069 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 3070 | Register object, |
| 3071 | Register scratch0, |
| 3072 | Register scratch1, |
| 3073 | Label* found) { |
| 3074 | DCHECK(!scratch1.is(scratch0)); |
| 3075 | Factory* factory = isolate()->factory(); |
| 3076 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3077 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3078 | |
| 3079 | // scratch contained elements pointer. |
| 3080 | mov(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3081 | mov(current, FieldOperand(current, HeapObject::kMapOffset)); |
| 3082 | mov(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 3083 | cmp(current, Immediate(factory->null_value())); |
| 3084 | j(equal, &end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3085 | |
| 3086 | // Loop based on the map going up the prototype chain. |
| 3087 | bind(&loop_again); |
| 3088 | mov(current, FieldOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3089 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 3090 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 3091 | CmpInstanceType(current, JS_OBJECT_TYPE); |
| 3092 | j(below, found); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3093 | mov(scratch1, FieldOperand(current, Map::kBitField2Offset)); |
| 3094 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 3095 | cmp(scratch1, Immediate(DICTIONARY_ELEMENTS)); |
| 3096 | j(equal, found); |
| 3097 | mov(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 3098 | cmp(current, Immediate(factory->null_value())); |
| 3099 | j(not_equal, &loop_again); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3100 | |
| 3101 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3102 | } |
| 3103 | |
| 3104 | |
| 3105 | void MacroAssembler::TruncatingDiv(Register dividend, int32_t divisor) { |
| 3106 | DCHECK(!dividend.is(eax)); |
| 3107 | DCHECK(!dividend.is(edx)); |
| 3108 | base::MagicNumbersForDivision<uint32_t> mag = |
| 3109 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 3110 | mov(eax, Immediate(mag.multiplier)); |
| 3111 | imul(dividend); |
| 3112 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 3113 | if (divisor > 0 && neg) add(edx, dividend); |
| 3114 | if (divisor < 0 && !neg && mag.multiplier > 0) sub(edx, dividend); |
| 3115 | if (mag.shift > 0) sar(edx, mag.shift); |
| 3116 | mov(eax, dividend); |
| 3117 | shr(eax, 31); |
| 3118 | add(edx, eax); |
| 3119 | } |
| 3120 | |
| 3121 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3122 | } // namespace internal |
| 3123 | } // namespace v8 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 3124 | |
| 3125 | #endif // V8_TARGET_ARCH_IA32 |