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 | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5 | #include "src/x64/codegen-x64.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #if V8_TARGET_ARCH_X64 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 8 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/codegen.h" |
| 10 | #include "src/macro-assembler.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 15 | // ------------------------------------------------------------------------- |
| 16 | // Platform-specific RuntimeCallHelper functions. |
| 17 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 18 | void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 19 | masm->EnterFrame(StackFrame::INTERNAL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 20 | DCHECK(!masm->has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 21 | masm->set_has_frame(true); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 22 | } |
| 23 | |
| 24 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 25 | void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 26 | masm->LeaveFrame(StackFrame::INTERNAL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 27 | DCHECK(masm->has_frame()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 28 | masm->set_has_frame(false); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 29 | } |
| 30 | |
| 31 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 32 | #define __ masm. |
| 33 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 34 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 35 | UnaryMathFunctionWithIsolate CreateExpFunction(Isolate* isolate) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 36 | size_t actual_size; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 37 | byte* buffer = |
| 38 | static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 39 | if (buffer == nullptr) return nullptr; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 40 | ExternalReference::InitializeMathExpData(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 41 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 42 | MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size), |
| 43 | CodeObjectRequired::kNo); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 44 | // xmm0: raw double input. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 45 | XMMRegister input = xmm0; |
| 46 | XMMRegister result = xmm1; |
| 47 | __ pushq(rax); |
| 48 | __ pushq(rbx); |
| 49 | |
| 50 | MathExpGenerator::EmitMathExp(&masm, input, result, xmm2, rax, rbx); |
| 51 | |
| 52 | __ popq(rbx); |
| 53 | __ popq(rax); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 54 | __ Movsd(xmm0, result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 55 | __ Ret(); |
| 56 | |
| 57 | CodeDesc desc; |
| 58 | masm.GetCode(&desc); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 59 | DCHECK(!RelocInfo::RequiresRelocation(desc)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 60 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 61 | Assembler::FlushICache(isolate, buffer, actual_size); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 62 | base::OS::ProtectCode(buffer, actual_size); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 63 | return FUNCTION_CAST<UnaryMathFunctionWithIsolate>(buffer); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 67 | UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 68 | size_t actual_size; |
| 69 | // Allocate buffer in executable space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 70 | byte* buffer = |
| 71 | static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 72 | if (buffer == nullptr) return nullptr; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 73 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 74 | MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size), |
| 75 | CodeObjectRequired::kNo); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 76 | // xmm0: raw double input. |
| 77 | // Move double input into registers. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 78 | __ Sqrtsd(xmm0, xmm0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 79 | __ Ret(); |
| 80 | |
| 81 | CodeDesc desc; |
| 82 | masm.GetCode(&desc); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 83 | DCHECK(!RelocInfo::RequiresRelocation(desc)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 84 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 85 | Assembler::FlushICache(isolate, buffer, actual_size); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 86 | base::OS::ProtectCode(buffer, actual_size); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 87 | return FUNCTION_CAST<UnaryMathFunctionWithIsolate>(buffer); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 88 | } |
| 89 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 90 | #undef __ |
| 91 | |
| 92 | // ------------------------------------------------------------------------- |
| 93 | // Code generators |
| 94 | |
| 95 | #define __ ACCESS_MASM(masm) |
| 96 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 97 | void ElementsTransitionGenerator::GenerateMapChangeElementsTransition( |
| 98 | MacroAssembler* masm, |
| 99 | Register receiver, |
| 100 | Register key, |
| 101 | Register value, |
| 102 | Register target_map, |
| 103 | AllocationSiteMode mode, |
| 104 | Label* allocation_memento_found) { |
| 105 | // Return address is on the stack. |
| 106 | Register scratch = rdi; |
| 107 | DCHECK(!AreAliased(receiver, key, value, target_map, scratch)); |
| 108 | |
| 109 | if (mode == TRACK_ALLOCATION_SITE) { |
| 110 | DCHECK(allocation_memento_found != NULL); |
| 111 | __ JumpIfJSArrayHasAllocationMemento( |
| 112 | receiver, scratch, allocation_memento_found); |
| 113 | } |
| 114 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 115 | // Set transitioned map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 116 | __ movp(FieldOperand(receiver, HeapObject::kMapOffset), target_map); |
| 117 | __ RecordWriteField(receiver, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 118 | HeapObject::kMapOffset, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 119 | target_map, |
| 120 | scratch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 121 | kDontSaveFPRegs, |
| 122 | EMIT_REMEMBERED_SET, |
| 123 | OMIT_SMI_CHECK); |
| 124 | } |
| 125 | |
| 126 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 127 | void ElementsTransitionGenerator::GenerateSmiToDouble( |
| 128 | MacroAssembler* masm, |
| 129 | Register receiver, |
| 130 | Register key, |
| 131 | Register value, |
| 132 | Register target_map, |
| 133 | AllocationSiteMode mode, |
| 134 | Label* fail) { |
| 135 | // Return address is on the stack. |
| 136 | DCHECK(receiver.is(rdx)); |
| 137 | DCHECK(key.is(rcx)); |
| 138 | DCHECK(value.is(rax)); |
| 139 | DCHECK(target_map.is(rbx)); |
| 140 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 141 | // The fail label is not actually used since we do not allocate. |
| 142 | Label allocated, new_backing_store, only_change_map, done; |
| 143 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 144 | if (mode == TRACK_ALLOCATION_SITE) { |
| 145 | __ JumpIfJSArrayHasAllocationMemento(rdx, rdi, fail); |
| 146 | } |
| 147 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 148 | // Check for empty arrays, which only require a map transition and no changes |
| 149 | // to the backing store. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 150 | __ movp(r8, FieldOperand(rdx, JSObject::kElementsOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 151 | __ CompareRoot(r8, Heap::kEmptyFixedArrayRootIndex); |
| 152 | __ j(equal, &only_change_map); |
| 153 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 154 | __ SmiToInteger32(r9, FieldOperand(r8, FixedDoubleArray::kLengthOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 155 | if (kPointerSize == kDoubleSize) { |
| 156 | // Check backing store for COW-ness. For COW arrays we have to |
| 157 | // allocate a new backing store. |
| 158 | __ CompareRoot(FieldOperand(r8, HeapObject::kMapOffset), |
| 159 | Heap::kFixedCOWArrayMapRootIndex); |
| 160 | __ j(equal, &new_backing_store); |
| 161 | } else { |
| 162 | // For x32 port we have to allocate a new backing store as SMI size is |
| 163 | // not equal with double size. |
| 164 | DCHECK(kDoubleSize == 2 * kPointerSize); |
| 165 | __ jmp(&new_backing_store); |
| 166 | } |
| 167 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 168 | // Check if the backing store is in new-space. If not, we need to allocate |
| 169 | // a new one since the old one is in pointer-space. |
| 170 | // If in new space, we can reuse the old backing store because it is |
| 171 | // the same size. |
| 172 | __ JumpIfNotInNewSpace(r8, rdi, &new_backing_store); |
| 173 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 174 | __ movp(r14, r8); // Destination array equals source array. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 175 | |
| 176 | // r8 : source FixedArray |
| 177 | // r9 : elements array length |
| 178 | // r14: destination FixedDoubleArray |
| 179 | // Set backing store's map |
| 180 | __ LoadRoot(rdi, Heap::kFixedDoubleArrayMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 181 | __ movp(FieldOperand(r14, HeapObject::kMapOffset), rdi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 182 | |
| 183 | __ bind(&allocated); |
| 184 | // Set transitioned map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 185 | __ movp(FieldOperand(rdx, HeapObject::kMapOffset), rbx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 186 | __ RecordWriteField(rdx, |
| 187 | HeapObject::kMapOffset, |
| 188 | rbx, |
| 189 | rdi, |
| 190 | kDontSaveFPRegs, |
| 191 | EMIT_REMEMBERED_SET, |
| 192 | OMIT_SMI_CHECK); |
| 193 | |
| 194 | // Convert smis to doubles and holes to hole NaNs. The Array's length |
| 195 | // remains unchanged. |
| 196 | STATIC_ASSERT(FixedDoubleArray::kLengthOffset == FixedArray::kLengthOffset); |
| 197 | STATIC_ASSERT(FixedDoubleArray::kHeaderSize == FixedArray::kHeaderSize); |
| 198 | |
| 199 | Label loop, entry, convert_hole; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 200 | __ movq(r15, bit_cast<int64_t, uint64_t>(kHoleNanInt64)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 201 | // r15: the-hole NaN |
| 202 | __ jmp(&entry); |
| 203 | |
| 204 | // Allocate new backing store. |
| 205 | __ bind(&new_backing_store); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 206 | __ leap(rdi, Operand(r9, times_8, FixedArray::kHeaderSize)); |
| 207 | __ Allocate(rdi, r14, r11, r15, fail, TAG_OBJECT); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 208 | // Set backing store's map |
| 209 | __ LoadRoot(rdi, Heap::kFixedDoubleArrayMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 210 | __ movp(FieldOperand(r14, HeapObject::kMapOffset), rdi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 211 | // Set receiver's backing store. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 212 | __ movp(FieldOperand(rdx, JSObject::kElementsOffset), r14); |
| 213 | __ movp(r11, r14); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 214 | __ RecordWriteField(rdx, |
| 215 | JSObject::kElementsOffset, |
| 216 | r11, |
| 217 | r15, |
| 218 | kDontSaveFPRegs, |
| 219 | EMIT_REMEMBERED_SET, |
| 220 | OMIT_SMI_CHECK); |
| 221 | // Set backing store's length. |
| 222 | __ Integer32ToSmi(r11, r9); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 223 | __ movp(FieldOperand(r14, FixedDoubleArray::kLengthOffset), r11); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 224 | __ jmp(&allocated); |
| 225 | |
| 226 | __ bind(&only_change_map); |
| 227 | // Set transitioned map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 228 | __ movp(FieldOperand(rdx, HeapObject::kMapOffset), rbx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 229 | __ RecordWriteField(rdx, |
| 230 | HeapObject::kMapOffset, |
| 231 | rbx, |
| 232 | rdi, |
| 233 | kDontSaveFPRegs, |
| 234 | OMIT_REMEMBERED_SET, |
| 235 | OMIT_SMI_CHECK); |
| 236 | __ jmp(&done); |
| 237 | |
| 238 | // Conversion loop. |
| 239 | __ bind(&loop); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 240 | __ movp(rbx, |
| 241 | FieldOperand(r8, r9, times_pointer_size, FixedArray::kHeaderSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 242 | // r9 : current element's index |
| 243 | // rbx: current element (smi-tagged) |
| 244 | __ JumpIfNotSmi(rbx, &convert_hole); |
| 245 | __ SmiToInteger32(rbx, rbx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 246 | __ Cvtlsi2sd(xmm0, rbx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 247 | __ Movsd(FieldOperand(r14, r9, times_8, FixedDoubleArray::kHeaderSize), xmm0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 248 | __ jmp(&entry); |
| 249 | __ bind(&convert_hole); |
| 250 | |
| 251 | if (FLAG_debug_code) { |
| 252 | __ CompareRoot(rbx, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 253 | __ Assert(equal, kObjectFoundInSmiOnlyArray); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | __ movq(FieldOperand(r14, r9, times_8, FixedDoubleArray::kHeaderSize), r15); |
| 257 | __ bind(&entry); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 258 | __ decp(r9); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 259 | __ j(not_sign, &loop); |
| 260 | |
| 261 | __ bind(&done); |
| 262 | } |
| 263 | |
| 264 | |
| 265 | void ElementsTransitionGenerator::GenerateDoubleToObject( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 266 | MacroAssembler* masm, |
| 267 | Register receiver, |
| 268 | Register key, |
| 269 | Register value, |
| 270 | Register target_map, |
| 271 | AllocationSiteMode mode, |
| 272 | Label* fail) { |
| 273 | // Return address is on the stack. |
| 274 | DCHECK(receiver.is(rdx)); |
| 275 | DCHECK(key.is(rcx)); |
| 276 | DCHECK(value.is(rax)); |
| 277 | DCHECK(target_map.is(rbx)); |
| 278 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 279 | Label loop, entry, convert_hole, gc_required, only_change_map; |
| 280 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 281 | if (mode == TRACK_ALLOCATION_SITE) { |
| 282 | __ JumpIfJSArrayHasAllocationMemento(rdx, rdi, fail); |
| 283 | } |
| 284 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 285 | // Check for empty arrays, which only require a map transition and no changes |
| 286 | // to the backing store. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 287 | __ movp(r8, FieldOperand(rdx, JSObject::kElementsOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 288 | __ CompareRoot(r8, Heap::kEmptyFixedArrayRootIndex); |
| 289 | __ j(equal, &only_change_map); |
| 290 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 291 | __ Push(rsi); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 292 | __ Push(rax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 293 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 294 | __ movp(r8, FieldOperand(rdx, JSObject::kElementsOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 295 | __ SmiToInteger32(r9, FieldOperand(r8, FixedDoubleArray::kLengthOffset)); |
| 296 | // r8 : source FixedDoubleArray |
| 297 | // r9 : number of elements |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 298 | __ leap(rdi, Operand(r9, times_pointer_size, FixedArray::kHeaderSize)); |
| 299 | __ Allocate(rdi, r11, r14, r15, &gc_required, TAG_OBJECT); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 300 | // r11: destination FixedArray |
| 301 | __ LoadRoot(rdi, Heap::kFixedArrayMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | __ movp(FieldOperand(r11, HeapObject::kMapOffset), rdi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 303 | __ Integer32ToSmi(r14, r9); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 304 | __ movp(FieldOperand(r11, FixedArray::kLengthOffset), r14); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 305 | |
| 306 | // Prepare for conversion loop. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 307 | __ movq(rsi, bit_cast<int64_t, uint64_t>(kHoleNanInt64)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 308 | __ LoadRoot(rdi, Heap::kTheHoleValueRootIndex); |
| 309 | // rsi: the-hole NaN |
| 310 | // rdi: pointer to the-hole |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 311 | |
| 312 | // Allocating heap numbers in the loop below can fail and cause a jump to |
| 313 | // gc_required. We can't leave a partly initialized FixedArray behind, |
| 314 | // so pessimistically fill it with holes now. |
| 315 | Label initialization_loop, initialization_loop_entry; |
| 316 | __ jmp(&initialization_loop_entry, Label::kNear); |
| 317 | __ bind(&initialization_loop); |
| 318 | __ movp(FieldOperand(r11, r9, times_pointer_size, FixedArray::kHeaderSize), |
| 319 | rdi); |
| 320 | __ bind(&initialization_loop_entry); |
| 321 | __ decp(r9); |
| 322 | __ j(not_sign, &initialization_loop); |
| 323 | |
| 324 | __ SmiToInteger32(r9, FieldOperand(r8, FixedDoubleArray::kLengthOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 325 | __ jmp(&entry); |
| 326 | |
| 327 | // Call into runtime if GC is required. |
| 328 | __ bind(&gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | __ Pop(rax); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 330 | __ Pop(rsi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 331 | __ jmp(fail); |
| 332 | |
| 333 | // Box doubles into heap numbers. |
| 334 | __ bind(&loop); |
| 335 | __ movq(r14, FieldOperand(r8, |
| 336 | r9, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 337 | times_8, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 338 | FixedDoubleArray::kHeaderSize)); |
| 339 | // r9 : current element's index |
| 340 | // r14: current element |
| 341 | __ cmpq(r14, rsi); |
| 342 | __ j(equal, &convert_hole); |
| 343 | |
| 344 | // Non-hole double, copy value into a heap number. |
| 345 | __ AllocateHeapNumber(rax, r15, &gc_required); |
| 346 | // rax: new heap number |
| 347 | __ movq(FieldOperand(rax, HeapNumber::kValueOffset), r14); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 348 | __ movp(FieldOperand(r11, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 349 | r9, |
| 350 | times_pointer_size, |
| 351 | FixedArray::kHeaderSize), |
| 352 | rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 353 | __ movp(r15, r9); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 354 | __ RecordWriteArray(r11, |
| 355 | rax, |
| 356 | r15, |
| 357 | kDontSaveFPRegs, |
| 358 | EMIT_REMEMBERED_SET, |
| 359 | OMIT_SMI_CHECK); |
| 360 | __ jmp(&entry, Label::kNear); |
| 361 | |
| 362 | // Replace the-hole NaN with the-hole pointer. |
| 363 | __ bind(&convert_hole); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 364 | __ movp(FieldOperand(r11, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 365 | r9, |
| 366 | times_pointer_size, |
| 367 | FixedArray::kHeaderSize), |
| 368 | rdi); |
| 369 | |
| 370 | __ bind(&entry); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 371 | __ decp(r9); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 372 | __ j(not_sign, &loop); |
| 373 | |
| 374 | // Replace receiver's backing store with newly created and filled FixedArray. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 375 | __ movp(FieldOperand(rdx, JSObject::kElementsOffset), r11); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 376 | __ RecordWriteField(rdx, |
| 377 | JSObject::kElementsOffset, |
| 378 | r11, |
| 379 | r15, |
| 380 | kDontSaveFPRegs, |
| 381 | EMIT_REMEMBERED_SET, |
| 382 | OMIT_SMI_CHECK); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 383 | __ Pop(rax); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 384 | __ Pop(rsi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 385 | |
| 386 | __ bind(&only_change_map); |
| 387 | // Set transitioned map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 388 | __ movp(FieldOperand(rdx, HeapObject::kMapOffset), rbx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 389 | __ RecordWriteField(rdx, |
| 390 | HeapObject::kMapOffset, |
| 391 | rbx, |
| 392 | rdi, |
| 393 | kDontSaveFPRegs, |
| 394 | OMIT_REMEMBERED_SET, |
| 395 | OMIT_SMI_CHECK); |
| 396 | } |
| 397 | |
| 398 | |
| 399 | void StringCharLoadGenerator::Generate(MacroAssembler* masm, |
| 400 | Register string, |
| 401 | Register index, |
| 402 | Register result, |
| 403 | Label* call_runtime) { |
| 404 | // Fetch the instance type of the receiver into result register. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 405 | __ movp(result, FieldOperand(string, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 406 | __ movzxbl(result, FieldOperand(result, Map::kInstanceTypeOffset)); |
| 407 | |
| 408 | // We need special handling for indirect strings. |
| 409 | Label check_sequential; |
| 410 | __ testb(result, Immediate(kIsIndirectStringMask)); |
| 411 | __ j(zero, &check_sequential, Label::kNear); |
| 412 | |
| 413 | // Dispatch on the indirect string shape: slice or cons. |
| 414 | Label cons_string; |
| 415 | __ testb(result, Immediate(kSlicedNotConsMask)); |
| 416 | __ j(zero, &cons_string, Label::kNear); |
| 417 | |
| 418 | // Handle slices. |
| 419 | Label indirect_string_loaded; |
| 420 | __ SmiToInteger32(result, FieldOperand(string, SlicedString::kOffsetOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 421 | __ addp(index, result); |
| 422 | __ movp(string, FieldOperand(string, SlicedString::kParentOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 423 | __ jmp(&indirect_string_loaded, Label::kNear); |
| 424 | |
| 425 | // Handle cons strings. |
| 426 | // Check whether the right hand side is the empty string (i.e. if |
| 427 | // this is really a flat string in a cons string). If that is not |
| 428 | // the case we would rather go to the runtime system now to flatten |
| 429 | // the string. |
| 430 | __ bind(&cons_string); |
| 431 | __ CompareRoot(FieldOperand(string, ConsString::kSecondOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 432 | Heap::kempty_stringRootIndex); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 433 | __ j(not_equal, call_runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 434 | __ movp(string, FieldOperand(string, ConsString::kFirstOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 435 | |
| 436 | __ bind(&indirect_string_loaded); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 437 | __ movp(result, FieldOperand(string, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 438 | __ movzxbl(result, FieldOperand(result, Map::kInstanceTypeOffset)); |
| 439 | |
| 440 | // Distinguish sequential and external strings. Only these two string |
| 441 | // representations can reach here (slices and flat cons strings have been |
| 442 | // reduced to the underlying sequential or external string). |
| 443 | Label seq_string; |
| 444 | __ bind(&check_sequential); |
| 445 | STATIC_ASSERT(kSeqStringTag == 0); |
| 446 | __ testb(result, Immediate(kStringRepresentationMask)); |
| 447 | __ j(zero, &seq_string, Label::kNear); |
| 448 | |
| 449 | // Handle external strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 450 | Label one_byte_external, done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 451 | if (FLAG_debug_code) { |
| 452 | // Assert that we do not have a cons or slice (indirect strings) here. |
| 453 | // Sequential strings have already been ruled out. |
| 454 | __ testb(result, Immediate(kIsIndirectStringMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 455 | __ Assert(zero, kExternalStringExpectedButNotFound); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 456 | } |
| 457 | // Rule out short external strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 458 | STATIC_ASSERT(kShortExternalStringTag != 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 459 | __ testb(result, Immediate(kShortExternalStringTag)); |
| 460 | __ j(not_zero, call_runtime); |
| 461 | // Check encoding. |
| 462 | STATIC_ASSERT(kTwoByteStringTag == 0); |
| 463 | __ testb(result, Immediate(kStringEncodingMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 464 | __ movp(result, FieldOperand(string, ExternalString::kResourceDataOffset)); |
| 465 | __ j(not_equal, &one_byte_external, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 466 | // Two-byte string. |
| 467 | __ movzxwl(result, Operand(result, index, times_2, 0)); |
| 468 | __ jmp(&done, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 469 | __ bind(&one_byte_external); |
| 470 | // One-byte string. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 471 | __ movzxbl(result, Operand(result, index, times_1, 0)); |
| 472 | __ jmp(&done, Label::kNear); |
| 473 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 474 | // Dispatch on the encoding: one-byte or two-byte. |
| 475 | Label one_byte; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 476 | __ bind(&seq_string); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 477 | STATIC_ASSERT((kStringEncodingMask & kOneByteStringTag) != 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 478 | STATIC_ASSERT((kStringEncodingMask & kTwoByteStringTag) == 0); |
| 479 | __ testb(result, Immediate(kStringEncodingMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 480 | __ j(not_zero, &one_byte, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 481 | |
| 482 | // Two-byte string. |
| 483 | // Load the two-byte character code into the result register. |
| 484 | STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1); |
| 485 | __ movzxwl(result, FieldOperand(string, |
| 486 | index, |
| 487 | times_2, |
| 488 | SeqTwoByteString::kHeaderSize)); |
| 489 | __ jmp(&done, Label::kNear); |
| 490 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 491 | // One-byte string. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 492 | // Load the byte into the result register. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 493 | __ bind(&one_byte); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 494 | __ movzxbl(result, FieldOperand(string, |
| 495 | index, |
| 496 | times_1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 497 | SeqOneByteString::kHeaderSize)); |
| 498 | __ bind(&done); |
| 499 | } |
| 500 | |
| 501 | |
| 502 | void MathExpGenerator::EmitMathExp(MacroAssembler* masm, |
| 503 | XMMRegister input, |
| 504 | XMMRegister result, |
| 505 | XMMRegister double_scratch, |
| 506 | Register temp1, |
| 507 | Register temp2) { |
| 508 | DCHECK(!input.is(result)); |
| 509 | DCHECK(!input.is(double_scratch)); |
| 510 | DCHECK(!result.is(double_scratch)); |
| 511 | DCHECK(!temp1.is(temp2)); |
| 512 | DCHECK(ExternalReference::math_exp_constants(0).address() != NULL); |
| 513 | DCHECK(!masm->serializer_enabled()); // External references not serializable. |
| 514 | |
| 515 | Label done; |
| 516 | |
| 517 | __ Move(kScratchRegister, ExternalReference::math_exp_constants(0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 518 | __ Movsd(double_scratch, Operand(kScratchRegister, 0 * kDoubleSize)); |
| 519 | __ Xorpd(result, result); |
| 520 | __ Ucomisd(double_scratch, input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 521 | __ j(above_equal, &done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 522 | __ Ucomisd(input, Operand(kScratchRegister, 1 * kDoubleSize)); |
| 523 | __ Movsd(result, Operand(kScratchRegister, 2 * kDoubleSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 524 | __ j(above_equal, &done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 525 | __ Movsd(double_scratch, Operand(kScratchRegister, 3 * kDoubleSize)); |
| 526 | __ Movsd(result, Operand(kScratchRegister, 4 * kDoubleSize)); |
| 527 | __ Mulsd(double_scratch, input); |
| 528 | __ Addsd(double_scratch, result); |
| 529 | __ Movq(temp2, double_scratch); |
| 530 | __ Subsd(double_scratch, result); |
| 531 | __ Movsd(result, Operand(kScratchRegister, 6 * kDoubleSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 532 | __ leaq(temp1, Operand(temp2, 0x1ff800)); |
| 533 | __ andq(temp2, Immediate(0x7ff)); |
| 534 | __ shrq(temp1, Immediate(11)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 535 | __ Mulsd(double_scratch, Operand(kScratchRegister, 5 * kDoubleSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 536 | __ Move(kScratchRegister, ExternalReference::math_exp_log_table()); |
| 537 | __ shlq(temp1, Immediate(52)); |
| 538 | __ orq(temp1, Operand(kScratchRegister, temp2, times_8, 0)); |
| 539 | __ Move(kScratchRegister, ExternalReference::math_exp_constants(0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 540 | __ Subsd(double_scratch, input); |
| 541 | __ Movsd(input, double_scratch); |
| 542 | __ Subsd(result, double_scratch); |
| 543 | __ Mulsd(input, double_scratch); |
| 544 | __ Mulsd(result, input); |
| 545 | __ Movq(input, temp1); |
| 546 | __ Mulsd(result, Operand(kScratchRegister, 7 * kDoubleSize)); |
| 547 | __ Subsd(result, double_scratch); |
| 548 | __ Addsd(result, Operand(kScratchRegister, 8 * kDoubleSize)); |
| 549 | __ Mulsd(result, input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 550 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 551 | __ bind(&done); |
| 552 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 553 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 554 | #undef __ |
| 555 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 556 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 557 | CodeAgingHelper::CodeAgingHelper(Isolate* isolate) { |
| 558 | USE(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 559 | DCHECK(young_sequence_.length() == kNoCodeAgeSequenceLength); |
| 560 | // The sequence of instructions that is patched out for aging code is the |
| 561 | // following boilerplate stack-building prologue that is found both in |
| 562 | // FUNCTION and OPTIMIZED_FUNCTION code: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 563 | CodePatcher patcher(isolate, young_sequence_.start(), |
| 564 | young_sequence_.length()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 565 | patcher.masm()->pushq(rbp); |
| 566 | patcher.masm()->movp(rbp, rsp); |
| 567 | patcher.masm()->Push(rsi); |
| 568 | patcher.masm()->Push(rdi); |
| 569 | } |
| 570 | |
| 571 | |
| 572 | #ifdef DEBUG |
| 573 | bool CodeAgingHelper::IsOld(byte* candidate) const { |
| 574 | return *candidate == kCallOpcode; |
| 575 | } |
| 576 | #endif |
| 577 | |
| 578 | |
| 579 | bool Code::IsYoungSequence(Isolate* isolate, byte* sequence) { |
| 580 | bool result = isolate->code_aging_helper()->IsYoung(sequence); |
| 581 | DCHECK(result || isolate->code_aging_helper()->IsOld(sequence)); |
| 582 | return result; |
| 583 | } |
| 584 | |
| 585 | |
| 586 | void Code::GetCodeAgeAndParity(Isolate* isolate, byte* sequence, Age* age, |
| 587 | MarkingParity* parity) { |
| 588 | if (IsYoungSequence(isolate, sequence)) { |
| 589 | *age = kNoAgeCodeAge; |
| 590 | *parity = NO_MARKING_PARITY; |
| 591 | } else { |
| 592 | sequence++; // Skip the kCallOpcode byte |
| 593 | Address target_address = sequence + *reinterpret_cast<int*>(sequence) + |
| 594 | Assembler::kCallTargetAddressOffset; |
| 595 | Code* stub = GetCodeFromTargetAddress(target_address); |
| 596 | GetCodeAgeAndParity(stub, age, parity); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | |
| 601 | void Code::PatchPlatformCodeAge(Isolate* isolate, |
| 602 | byte* sequence, |
| 603 | Code::Age age, |
| 604 | MarkingParity parity) { |
| 605 | uint32_t young_length = isolate->code_aging_helper()->young_sequence_length(); |
| 606 | if (age == kNoAgeCodeAge) { |
| 607 | isolate->code_aging_helper()->CopyYoungSequenceTo(sequence); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 608 | Assembler::FlushICache(isolate, sequence, young_length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 609 | } else { |
| 610 | Code* stub = GetCodeAgeStub(isolate, age, parity); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 611 | CodePatcher patcher(isolate, sequence, young_length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 612 | patcher.masm()->call(stub->instruction_start()); |
| 613 | patcher.masm()->Nop( |
| 614 | kNoCodeAgeSequenceLength - Assembler::kShortCallInstructionLength); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | |
| 619 | Operand StackArgumentsAccessor::GetArgumentOperand(int index) { |
| 620 | DCHECK(index >= 0); |
| 621 | int receiver = (receiver_mode_ == ARGUMENTS_CONTAIN_RECEIVER) ? 1 : 0; |
| 622 | int displacement_to_last_argument = base_reg_.is(rsp) ? |
| 623 | kPCOnStackSize : kFPOnStackSize + kPCOnStackSize; |
| 624 | displacement_to_last_argument += extra_displacement_to_last_argument_; |
| 625 | if (argument_count_reg_.is(no_reg)) { |
| 626 | // argument[0] is at base_reg_ + displacement_to_last_argument + |
| 627 | // (argument_count_immediate_ + receiver - 1) * kPointerSize. |
| 628 | DCHECK(argument_count_immediate_ + receiver > 0); |
| 629 | return Operand(base_reg_, displacement_to_last_argument + |
| 630 | (argument_count_immediate_ + receiver - 1 - index) * kPointerSize); |
| 631 | } else { |
| 632 | // argument[0] is at base_reg_ + displacement_to_last_argument + |
| 633 | // argument_count_reg_ * times_pointer_size + (receiver - 1) * kPointerSize. |
| 634 | return Operand(base_reg_, argument_count_reg_, times_pointer_size, |
| 635 | displacement_to_last_argument + (receiver - 1 - index) * kPointerSize); |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 640 | } // namespace internal |
| 641 | } // namespace v8 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 642 | |
| 643 | #endif // V8_TARGET_ARCH_X64 |