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_X64 |
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" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 12 | #include "src/heap/heap.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 13 | #include "src/register-configuration.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 14 | #include "src/x64/assembler-x64.h" |
| 15 | #include "src/x64/macro-assembler-x64.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 16 | |
| 17 | namespace v8 { |
| 18 | namespace internal { |
| 19 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 20 | MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size, |
| 21 | CodeObjectRequired create_code_object) |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 22 | : Assembler(arg_isolate, buffer, size), |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 23 | generating_stub_(false), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 24 | has_frame_(false), |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 25 | root_array_available_(true) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 26 | if (create_code_object == CodeObjectRequired::kYes) { |
| 27 | code_object_ = |
| 28 | Handle<Object>::New(isolate()->heap()->undefined_value(), isolate()); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 29 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 30 | } |
| 31 | |
| 32 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 33 | static const int64_t kInvalidRootRegisterDelta = -1; |
| 34 | |
| 35 | |
| 36 | int64_t MacroAssembler::RootRegisterDelta(ExternalReference other) { |
| 37 | if (predictable_code_size() && |
| 38 | (other.address() < reinterpret_cast<Address>(isolate()) || |
| 39 | other.address() >= reinterpret_cast<Address>(isolate() + 1))) { |
| 40 | return kInvalidRootRegisterDelta; |
| 41 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 42 | Address roots_register_value = kRootRegisterBias + |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 43 | reinterpret_cast<Address>(isolate()->heap()->roots_array_start()); |
| 44 | |
| 45 | int64_t delta = kInvalidRootRegisterDelta; // Bogus initialization. |
| 46 | if (kPointerSize == kInt64Size) { |
| 47 | delta = other.address() - roots_register_value; |
| 48 | } else { |
| 49 | // For x32, zero extend the address to 64-bit and calculate the delta. |
| 50 | uint64_t o = static_cast<uint32_t>( |
| 51 | reinterpret_cast<intptr_t>(other.address())); |
| 52 | uint64_t r = static_cast<uint32_t>( |
| 53 | reinterpret_cast<intptr_t>(roots_register_value)); |
| 54 | delta = o - r; |
| 55 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 56 | return delta; |
| 57 | } |
| 58 | |
| 59 | |
| 60 | Operand MacroAssembler::ExternalOperand(ExternalReference target, |
| 61 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 62 | if (root_array_available_ && !serializer_enabled()) { |
| 63 | int64_t delta = RootRegisterDelta(target); |
| 64 | if (delta != kInvalidRootRegisterDelta && is_int32(delta)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 65 | return Operand(kRootRegister, static_cast<int32_t>(delta)); |
| 66 | } |
| 67 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 68 | Move(scratch, target); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 69 | return Operand(scratch, 0); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | void MacroAssembler::Load(Register destination, ExternalReference source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 74 | if (root_array_available_ && !serializer_enabled()) { |
| 75 | int64_t delta = RootRegisterDelta(source); |
| 76 | if (delta != kInvalidRootRegisterDelta && is_int32(delta)) { |
| 77 | movp(destination, Operand(kRootRegister, static_cast<int32_t>(delta))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 78 | return; |
| 79 | } |
| 80 | } |
| 81 | // Safe code. |
| 82 | if (destination.is(rax)) { |
| 83 | load_rax(source); |
| 84 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 85 | Move(kScratchRegister, source); |
| 86 | movp(destination, Operand(kScratchRegister, 0)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 87 | } |
| 88 | } |
| 89 | |
| 90 | |
| 91 | void MacroAssembler::Store(ExternalReference destination, Register source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 92 | if (root_array_available_ && !serializer_enabled()) { |
| 93 | int64_t delta = RootRegisterDelta(destination); |
| 94 | if (delta != kInvalidRootRegisterDelta && is_int32(delta)) { |
| 95 | movp(Operand(kRootRegister, static_cast<int32_t>(delta)), source); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 96 | return; |
| 97 | } |
| 98 | } |
| 99 | // Safe code. |
| 100 | if (source.is(rax)) { |
| 101 | store_rax(destination); |
| 102 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 103 | Move(kScratchRegister, destination); |
| 104 | movp(Operand(kScratchRegister, 0), source); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 105 | } |
| 106 | } |
| 107 | |
| 108 | |
| 109 | void MacroAssembler::LoadAddress(Register destination, |
| 110 | ExternalReference source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 111 | if (root_array_available_ && !serializer_enabled()) { |
| 112 | int64_t delta = RootRegisterDelta(source); |
| 113 | if (delta != kInvalidRootRegisterDelta && is_int32(delta)) { |
| 114 | leap(destination, Operand(kRootRegister, static_cast<int32_t>(delta))); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 115 | return; |
| 116 | } |
| 117 | } |
| 118 | // Safe code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 119 | Move(destination, source); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | |
| 123 | int MacroAssembler::LoadAddressSize(ExternalReference source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 124 | if (root_array_available_ && !serializer_enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 125 | // This calculation depends on the internals of LoadAddress. |
| 126 | // It's correctness is ensured by the asserts in the Call |
| 127 | // instruction below. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 128 | int64_t delta = RootRegisterDelta(source); |
| 129 | if (delta != kInvalidRootRegisterDelta && is_int32(delta)) { |
| 130 | // Operand is leap(scratch, Operand(kRootRegister, delta)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 131 | // Opcodes : REX.W 8D ModRM Disp8/Disp32 - 4 or 7. |
| 132 | int size = 4; |
| 133 | if (!is_int8(static_cast<int32_t>(delta))) { |
| 134 | size += 3; // Need full four-byte displacement in lea. |
| 135 | } |
| 136 | return size; |
| 137 | } |
| 138 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 139 | // Size of movp(destination, src); |
| 140 | return Assembler::kMoveAddressIntoScratchRegisterInstructionLength; |
| 141 | } |
| 142 | |
| 143 | |
| 144 | void MacroAssembler::PushAddress(ExternalReference source) { |
| 145 | int64_t address = reinterpret_cast<int64_t>(source.address()); |
| 146 | if (is_int32(address) && !serializer_enabled()) { |
| 147 | if (emit_debug_code()) { |
| 148 | Move(kScratchRegister, kZapValue, Assembler::RelocInfoNone()); |
| 149 | } |
| 150 | Push(Immediate(static_cast<int32_t>(address))); |
| 151 | return; |
| 152 | } |
| 153 | LoadAddress(kScratchRegister, source); |
| 154 | Push(kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 158 | void MacroAssembler::LoadRoot(Register destination, Heap::RootListIndex index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 159 | DCHECK(root_array_available_); |
| 160 | movp(destination, Operand(kRootRegister, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 161 | (index << kPointerSizeLog2) - kRootRegisterBias)); |
| 162 | } |
| 163 | |
| 164 | |
| 165 | void MacroAssembler::LoadRootIndexed(Register destination, |
| 166 | Register variable_offset, |
| 167 | int fixed_offset) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 168 | DCHECK(root_array_available_); |
| 169 | movp(destination, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 170 | Operand(kRootRegister, |
| 171 | variable_offset, times_pointer_size, |
| 172 | (fixed_offset << kPointerSizeLog2) - kRootRegisterBias)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 176 | void MacroAssembler::StoreRoot(Register source, Heap::RootListIndex index) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 177 | DCHECK(Heap::RootCanBeWrittenAfterInitialization(index)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 178 | DCHECK(root_array_available_); |
| 179 | movp(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias), |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 180 | source); |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 184 | void MacroAssembler::PushRoot(Heap::RootListIndex index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 185 | DCHECK(root_array_available_); |
| 186 | Push(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 190 | void MacroAssembler::CompareRoot(Register with, Heap::RootListIndex index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 191 | DCHECK(root_array_available_); |
| 192 | cmpp(with, Operand(kRootRegister, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 193 | (index << kPointerSizeLog2) - kRootRegisterBias)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 197 | void MacroAssembler::CompareRoot(const Operand& with, |
| 198 | Heap::RootListIndex index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 199 | DCHECK(root_array_available_); |
| 200 | DCHECK(!with.AddressUsesRegister(kScratchRegister)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 201 | LoadRoot(kScratchRegister, index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 202 | cmpp(with, kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 206 | void MacroAssembler::RememberedSetHelper(Register object, // For debug tests. |
| 207 | Register addr, |
| 208 | Register scratch, |
| 209 | SaveFPRegsMode save_fp, |
| 210 | RememberedSetFinalAction and_then) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 211 | if (emit_debug_code()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 212 | Label ok; |
| 213 | JumpIfNotInNewSpace(object, scratch, &ok, Label::kNear); |
| 214 | int3(); |
| 215 | bind(&ok); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 216 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 217 | // Load store buffer top. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 218 | ExternalReference store_buffer = |
| 219 | ExternalReference::store_buffer_top(isolate()); |
| 220 | movp(scratch, ExternalOperand(store_buffer)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 221 | // Store pointer to buffer. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 222 | movp(Operand(scratch, 0), addr); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 223 | // Increment buffer top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 224 | addp(scratch, Immediate(kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 225 | // Write back new top of buffer. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 226 | movp(ExternalOperand(store_buffer), scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 227 | // Call stub on end of buffer. |
| 228 | Label done; |
| 229 | // Check for end of buffer. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 230 | testp(scratch, Immediate(StoreBuffer::kStoreBufferMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 231 | if (and_then == kReturnAtEnd) { |
| 232 | Label buffer_overflowed; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 233 | j(equal, &buffer_overflowed, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 234 | ret(0); |
| 235 | bind(&buffer_overflowed); |
| 236 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 237 | DCHECK(and_then == kFallThroughAtEnd); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 238 | j(not_equal, &done, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 239 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 240 | StoreBufferOverflowStub store_buffer_overflow(isolate(), save_fp); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 241 | CallStub(&store_buffer_overflow); |
| 242 | if (and_then == kReturnAtEnd) { |
| 243 | ret(0); |
| 244 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 245 | DCHECK(and_then == kFallThroughAtEnd); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 246 | bind(&done); |
| 247 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 251 | void MacroAssembler::InNewSpace(Register object, |
| 252 | Register scratch, |
| 253 | Condition cc, |
| 254 | Label* branch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 255 | Label::Distance distance) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 256 | const int mask = |
| 257 | (1 << MemoryChunk::IN_FROM_SPACE) | (1 << MemoryChunk::IN_TO_SPACE); |
| 258 | CheckPageFlag(object, scratch, mask, cc, branch, distance); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 262 | void MacroAssembler::RecordWriteField( |
| 263 | Register object, |
| 264 | int offset, |
| 265 | Register value, |
| 266 | Register dst, |
| 267 | SaveFPRegsMode save_fp, |
| 268 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 269 | SmiCheck smi_check, |
| 270 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 271 | // First, check if a write barrier is even needed. The tests below |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 272 | // catch stores of Smis. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 273 | Label done; |
| 274 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 275 | // Skip barrier if writing a smi. |
| 276 | if (smi_check == INLINE_SMI_CHECK) { |
| 277 | JumpIfSmi(value, &done); |
| 278 | } |
| 279 | |
| 280 | // Although the object register is tagged, the offset is relative to the start |
| 281 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | DCHECK(IsAligned(offset, kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 283 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 284 | leap(dst, FieldOperand(object, offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 285 | if (emit_debug_code()) { |
| 286 | Label ok; |
| 287 | testb(dst, Immediate((1 << kPointerSizeLog2) - 1)); |
| 288 | j(zero, &ok, Label::kNear); |
| 289 | int3(); |
| 290 | bind(&ok); |
| 291 | } |
| 292 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 293 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 294 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 295 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 296 | bind(&done); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 297 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 298 | // Clobber clobbered input registers when running with the debug-code flag |
| 299 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 300 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 301 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
| 302 | Move(dst, kZapValue, Assembler::RelocInfoNone()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 303 | } |
| 304 | } |
| 305 | |
| 306 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 307 | void MacroAssembler::RecordWriteArray( |
| 308 | Register object, |
| 309 | Register value, |
| 310 | Register index, |
| 311 | SaveFPRegsMode save_fp, |
| 312 | RememberedSetAction remembered_set_action, |
| 313 | SmiCheck smi_check, |
| 314 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 315 | // First, check if a write barrier is even needed. The tests below |
| 316 | // catch stores of Smis. |
| 317 | Label done; |
| 318 | |
| 319 | // Skip barrier if writing a smi. |
| 320 | if (smi_check == INLINE_SMI_CHECK) { |
| 321 | JumpIfSmi(value, &done); |
| 322 | } |
| 323 | |
| 324 | // Array access: calculate the destination address. Index is not a smi. |
| 325 | Register dst = index; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 326 | leap(dst, Operand(object, index, times_pointer_size, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 327 | FixedArray::kHeaderSize - kHeapObjectTag)); |
| 328 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 330 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 331 | |
| 332 | bind(&done); |
| 333 | |
| 334 | // Clobber clobbered input registers when running with the debug-code flag |
| 335 | // turned on to provoke errors. |
| 336 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 337 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
| 338 | Move(index, kZapValue, Assembler::RelocInfoNone()); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 339 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 343 | void MacroAssembler::RecordWriteForMap(Register object, |
| 344 | Register map, |
| 345 | Register dst, |
| 346 | SaveFPRegsMode fp_mode) { |
| 347 | DCHECK(!object.is(kScratchRegister)); |
| 348 | DCHECK(!object.is(map)); |
| 349 | DCHECK(!object.is(dst)); |
| 350 | DCHECK(!map.is(dst)); |
| 351 | AssertNotSmi(object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 352 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 353 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 354 | Label ok; |
| 355 | if (map.is(kScratchRegister)) pushq(map); |
| 356 | CompareMap(map, isolate()->factory()->meta_map()); |
| 357 | if (map.is(kScratchRegister)) popq(map); |
| 358 | j(equal, &ok, Label::kNear); |
| 359 | int3(); |
| 360 | bind(&ok); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 361 | } |
| 362 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 363 | if (!FLAG_incremental_marking) { |
| 364 | return; |
| 365 | } |
| 366 | |
| 367 | if (emit_debug_code()) { |
| 368 | Label ok; |
| 369 | if (map.is(kScratchRegister)) pushq(map); |
| 370 | cmpp(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 371 | if (map.is(kScratchRegister)) popq(map); |
| 372 | j(equal, &ok, Label::kNear); |
| 373 | int3(); |
| 374 | bind(&ok); |
| 375 | } |
| 376 | |
| 377 | // Compute the address. |
| 378 | leap(dst, FieldOperand(object, HeapObject::kMapOffset)); |
| 379 | |
| 380 | // First, check if a write barrier is even needed. The tests below |
| 381 | // catch stores of smis and stores into the young generation. |
| 382 | Label done; |
| 383 | |
| 384 | // A single check of the map's pages interesting flag suffices, since it is |
| 385 | // only set during incremental collection, and then it's also guaranteed that |
| 386 | // the from object's page's interesting flag is also set. This optimization |
| 387 | // relies on the fact that maps can never be in new space. |
| 388 | CheckPageFlag(map, |
| 389 | map, // Used as scratch. |
| 390 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 391 | zero, |
| 392 | &done, |
| 393 | Label::kNear); |
| 394 | |
| 395 | RecordWriteStub stub(isolate(), object, map, dst, OMIT_REMEMBERED_SET, |
| 396 | fp_mode); |
| 397 | CallStub(&stub); |
| 398 | |
| 399 | bind(&done); |
| 400 | |
| 401 | // Count number of write barriers in generated code. |
| 402 | isolate()->counters()->write_barriers_static()->Increment(); |
| 403 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 404 | |
| 405 | // Clobber clobbered registers when running with the debug-code flag |
| 406 | // turned on to provoke errors. |
| 407 | if (emit_debug_code()) { |
| 408 | Move(dst, kZapValue, Assembler::RelocInfoNone()); |
| 409 | Move(map, kZapValue, Assembler::RelocInfoNone()); |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | |
| 414 | void MacroAssembler::RecordWrite( |
| 415 | Register object, |
| 416 | Register address, |
| 417 | Register value, |
| 418 | SaveFPRegsMode fp_mode, |
| 419 | RememberedSetAction remembered_set_action, |
| 420 | SmiCheck smi_check, |
| 421 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 422 | DCHECK(!object.is(value)); |
| 423 | DCHECK(!object.is(address)); |
| 424 | DCHECK(!value.is(address)); |
| 425 | AssertNotSmi(object); |
| 426 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 427 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 428 | !FLAG_incremental_marking) { |
| 429 | return; |
| 430 | } |
| 431 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 432 | if (emit_debug_code()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 433 | Label ok; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 434 | cmpp(value, Operand(address, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 435 | j(equal, &ok, Label::kNear); |
| 436 | int3(); |
| 437 | bind(&ok); |
| 438 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 439 | |
| 440 | // First, check if a write barrier is even needed. The tests below |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 441 | // catch stores of smis and stores into the young generation. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 442 | Label done; |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 443 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 444 | if (smi_check == INLINE_SMI_CHECK) { |
| 445 | // Skip barrier if writing a smi. |
| 446 | JumpIfSmi(value, &done); |
| 447 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 448 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 449 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 450 | CheckPageFlag(value, |
| 451 | value, // Used as scratch. |
| 452 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 453 | zero, |
| 454 | &done, |
| 455 | Label::kNear); |
| 456 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 457 | |
| 458 | CheckPageFlag(object, |
| 459 | value, // Used as scratch. |
| 460 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 461 | zero, |
| 462 | &done, |
| 463 | Label::kNear); |
| 464 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 465 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 466 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 467 | CallStub(&stub); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 468 | |
| 469 | bind(&done); |
| 470 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 471 | // Count number of write barriers in generated code. |
| 472 | isolate()->counters()->write_barriers_static()->Increment(); |
| 473 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 474 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 475 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 476 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 477 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 478 | Move(address, kZapValue, Assembler::RelocInfoNone()); |
| 479 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 480 | } |
| 481 | } |
| 482 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 483 | void MacroAssembler::RecordWriteCodeEntryField(Register js_function, |
| 484 | Register code_entry, |
| 485 | Register scratch) { |
| 486 | const int offset = JSFunction::kCodeEntryOffset; |
| 487 | |
| 488 | // The input registers are fixed to make calling the C write barrier function |
| 489 | // easier. |
| 490 | DCHECK(js_function.is(rdi)); |
| 491 | DCHECK(code_entry.is(rcx)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 492 | DCHECK(scratch.is(r15)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 493 | |
| 494 | // Since a code entry (value) is always in old space, we don't need to update |
| 495 | // remembered set. If incremental marking is off, there is nothing for us to |
| 496 | // do. |
| 497 | if (!FLAG_incremental_marking) return; |
| 498 | |
| 499 | AssertNotSmi(js_function); |
| 500 | |
| 501 | if (emit_debug_code()) { |
| 502 | Label ok; |
| 503 | leap(scratch, FieldOperand(js_function, offset)); |
| 504 | cmpp(code_entry, Operand(scratch, 0)); |
| 505 | j(equal, &ok, Label::kNear); |
| 506 | int3(); |
| 507 | bind(&ok); |
| 508 | } |
| 509 | |
| 510 | // First, check if a write barrier is even needed. The tests below |
| 511 | // catch stores of Smis and stores into young gen. |
| 512 | Label done; |
| 513 | |
| 514 | CheckPageFlag(code_entry, scratch, |
| 515 | MemoryChunk::kPointersToHereAreInterestingMask, zero, &done, |
| 516 | Label::kNear); |
| 517 | CheckPageFlag(js_function, scratch, |
| 518 | MemoryChunk::kPointersFromHereAreInterestingMask, zero, &done, |
| 519 | Label::kNear); |
| 520 | |
| 521 | // Save input registers. |
| 522 | Push(js_function); |
| 523 | Push(code_entry); |
| 524 | |
| 525 | const Register dst = scratch; |
| 526 | leap(dst, FieldOperand(js_function, offset)); |
| 527 | |
| 528 | // Save caller-saved registers. |
| 529 | PushCallerSaved(kDontSaveFPRegs, js_function, code_entry); |
| 530 | |
| 531 | int argument_count = 3; |
| 532 | PrepareCallCFunction(argument_count); |
| 533 | |
| 534 | // Load the argument registers. |
| 535 | if (arg_reg_1.is(rcx)) { |
| 536 | // Windows calling convention. |
| 537 | DCHECK(arg_reg_2.is(rdx) && arg_reg_3.is(r8)); |
| 538 | |
| 539 | movp(arg_reg_1, js_function); // rcx gets rdi. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 540 | movp(arg_reg_2, dst); // rdx gets r15. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 541 | } else { |
| 542 | // AMD64 calling convention. |
| 543 | DCHECK(arg_reg_1.is(rdi) && arg_reg_2.is(rsi) && arg_reg_3.is(rdx)); |
| 544 | |
| 545 | // rdi is already loaded with js_function. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 546 | movp(arg_reg_2, dst); // rsi gets r15. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 547 | } |
| 548 | Move(arg_reg_3, ExternalReference::isolate_address(isolate())); |
| 549 | |
| 550 | { |
| 551 | AllowExternalCallThatCantCauseGC scope(this); |
| 552 | CallCFunction( |
| 553 | ExternalReference::incremental_marking_record_write_code_entry_function( |
| 554 | isolate()), |
| 555 | argument_count); |
| 556 | } |
| 557 | |
| 558 | // Restore caller-saved registers. |
| 559 | PopCallerSaved(kDontSaveFPRegs, js_function, code_entry); |
| 560 | |
| 561 | // Restore input registers. |
| 562 | Pop(code_entry); |
| 563 | Pop(js_function); |
| 564 | |
| 565 | bind(&done); |
| 566 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 567 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 568 | void MacroAssembler::Assert(Condition cc, BailoutReason reason) { |
| 569 | if (emit_debug_code()) Check(cc, reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 573 | void MacroAssembler::AssertFastElements(Register elements) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 574 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 575 | Label ok; |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 576 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 577 | Heap::kFixedArrayMapRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 578 | j(equal, &ok, Label::kNear); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 579 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 580 | Heap::kFixedDoubleArrayMapRootIndex); |
| 581 | j(equal, &ok, Label::kNear); |
| 582 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 583 | Heap::kFixedCOWArrayMapRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 584 | j(equal, &ok, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 585 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 586 | bind(&ok); |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 591 | void MacroAssembler::Check(Condition cc, BailoutReason reason) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 592 | Label L; |
| 593 | j(cc, &L, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 594 | Abort(reason); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 595 | // Control will not return here. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 596 | bind(&L); |
| 597 | } |
| 598 | |
| 599 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 600 | void MacroAssembler::CheckStackAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 601 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 602 | int frame_alignment_mask = frame_alignment - 1; |
| 603 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 604 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 605 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 606 | testp(rsp, Immediate(frame_alignment_mask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 607 | j(zero, &alignment_as_expected, Label::kNear); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 608 | // Abort if stack is not aligned. |
| 609 | int3(); |
| 610 | bind(&alignment_as_expected); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 615 | void MacroAssembler::NegativeZeroTest(Register result, |
| 616 | Register op, |
| 617 | Label* then_label) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 618 | Label ok; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 619 | testl(result, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 620 | j(not_zero, &ok, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 621 | testl(op, op); |
| 622 | j(sign, then_label); |
| 623 | bind(&ok); |
| 624 | } |
| 625 | |
| 626 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 627 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 628 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 629 | const char* msg = GetBailoutReason(reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 630 | if (msg != NULL) { |
| 631 | RecordComment("Abort message: "); |
| 632 | RecordComment(msg); |
| 633 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 634 | |
| 635 | if (FLAG_trap_on_abort) { |
| 636 | int3(); |
| 637 | return; |
| 638 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 639 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 640 | |
| 641 | Move(kScratchRegister, Smi::FromInt(static_cast<int>(reason)), |
| 642 | Assembler::RelocInfoNone()); |
| 643 | Push(kScratchRegister); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 644 | |
| 645 | if (!has_frame_) { |
| 646 | // We don't actually want to generate a pile of code for this, so just |
| 647 | // claim there is a stack frame, without generating one. |
| 648 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 649 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 650 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 651 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 652 | } |
| 653 | // Control will not return here. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 654 | int3(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 655 | } |
| 656 | |
| 657 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 658 | void MacroAssembler::CallStub(CodeStub* stub, TypeFeedbackId ast_id) { |
| 659 | DCHECK(AllowThisStubCall(stub)); // Calls are not allowed in some stubs |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 660 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 661 | } |
| 662 | |
| 663 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 664 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 665 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 666 | } |
| 667 | |
| 668 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 669 | void MacroAssembler::StubReturn(int argc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 670 | DCHECK(argc >= 1 && generating_stub()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 671 | ret((argc - 1) * kPointerSize); |
| 672 | } |
| 673 | |
| 674 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 675 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 676 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 680 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
| 681 | // The assert checks that the constants for the maximum number of digits |
| 682 | // for an array index cached in the hash field and the number of bits |
| 683 | // reserved for it does not conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 684 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 685 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 686 | if (!hash.is(index)) { |
| 687 | movl(index, hash); |
| 688 | } |
| 689 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 693 | void MacroAssembler::CallRuntime(const Runtime::Function* f, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 694 | int num_arguments, |
| 695 | SaveFPRegsMode save_doubles) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 696 | // If the expected number of arguments of the runtime function is |
| 697 | // constant, we check that the actual number of arguments match the |
| 698 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 699 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 700 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 701 | // TODO(1236192): Most runtime routines don't need the number of |
| 702 | // arguments passed in because it is constant. At some point we |
| 703 | // should remove this need and make the runtime routine entry code |
| 704 | // smarter. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 705 | Set(rax, num_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 706 | LoadAddress(rbx, ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 707 | CEntryStub ces(isolate(), f->result_size, save_doubles); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 708 | CallStub(&ces); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 709 | } |
| 710 | |
| 711 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 712 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
| 713 | int num_arguments) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 714 | Set(rax, num_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 715 | LoadAddress(rbx, ext); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 716 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 717 | CEntryStub stub(isolate(), 1); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 718 | CallStub(&stub); |
| 719 | } |
| 720 | |
| 721 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 722 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 723 | // ----------- S t a t e ------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 724 | // -- rsp[0] : return address |
| 725 | // -- rsp[8] : argument num_arguments - 1 |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 726 | // ... |
| 727 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 728 | // |
| 729 | // For runtime functions with variable arguments: |
| 730 | // -- rax : number of arguments |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 731 | // ----------------------------------- |
| 732 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 733 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 734 | DCHECK_EQ(1, function->result_size); |
| 735 | if (function->nargs >= 0) { |
| 736 | Set(rax, function->nargs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 737 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 738 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 742 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 743 | // Set the entry point and jump to the C entry runtime stub. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 744 | LoadAddress(rbx, ext); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 745 | CEntryStub ces(isolate(), 1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 746 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 747 | } |
| 748 | |
| 749 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 750 | #define REG(Name) \ |
| 751 | { Register::kCode_##Name } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 752 | |
| 753 | static const Register saved_regs[] = { |
| 754 | REG(rax), REG(rcx), REG(rdx), REG(rbx), REG(rbp), REG(rsi), REG(rdi), REG(r8), |
| 755 | REG(r9), REG(r10), REG(r11) |
| 756 | }; |
| 757 | |
| 758 | #undef REG |
| 759 | |
| 760 | static const int kNumberOfSavedRegs = sizeof(saved_regs) / sizeof(Register); |
| 761 | |
| 762 | |
| 763 | void MacroAssembler::PushCallerSaved(SaveFPRegsMode fp_mode, |
| 764 | Register exclusion1, |
| 765 | Register exclusion2, |
| 766 | Register exclusion3) { |
| 767 | // We don't allow a GC during a store buffer overflow so there is no need to |
| 768 | // store the registers in any particular way, but we do have to store and |
| 769 | // restore them. |
| 770 | for (int i = 0; i < kNumberOfSavedRegs; i++) { |
| 771 | Register reg = saved_regs[i]; |
| 772 | if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 773 | pushq(reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 774 | } |
| 775 | } |
| 776 | // R12 to r15 are callee save on all platforms. |
| 777 | if (fp_mode == kSaveFPRegs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 778 | subp(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters)); |
| 779 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 780 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 781 | Movsd(Operand(rsp, i * kDoubleSize), reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 782 | } |
| 783 | } |
| 784 | } |
| 785 | |
| 786 | |
| 787 | void MacroAssembler::PopCallerSaved(SaveFPRegsMode fp_mode, |
| 788 | Register exclusion1, |
| 789 | Register exclusion2, |
| 790 | Register exclusion3) { |
| 791 | if (fp_mode == kSaveFPRegs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 792 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 793 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 794 | Movsd(reg, Operand(rsp, i * kDoubleSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 795 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 796 | addp(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 797 | } |
| 798 | for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) { |
| 799 | Register reg = saved_regs[i]; |
| 800 | if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 801 | popq(reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 802 | } |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 807 | void MacroAssembler::Cvtss2sd(XMMRegister dst, XMMRegister src) { |
| 808 | if (CpuFeatures::IsSupported(AVX)) { |
| 809 | CpuFeatureScope scope(this, AVX); |
| 810 | vcvtss2sd(dst, src, src); |
| 811 | } else { |
| 812 | cvtss2sd(dst, src); |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | |
| 817 | void MacroAssembler::Cvtss2sd(XMMRegister dst, const Operand& src) { |
| 818 | if (CpuFeatures::IsSupported(AVX)) { |
| 819 | CpuFeatureScope scope(this, AVX); |
| 820 | vcvtss2sd(dst, dst, src); |
| 821 | } else { |
| 822 | cvtss2sd(dst, src); |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | |
| 827 | void MacroAssembler::Cvtsd2ss(XMMRegister dst, XMMRegister src) { |
| 828 | if (CpuFeatures::IsSupported(AVX)) { |
| 829 | CpuFeatureScope scope(this, AVX); |
| 830 | vcvtsd2ss(dst, src, src); |
| 831 | } else { |
| 832 | cvtsd2ss(dst, src); |
| 833 | } |
| 834 | } |
| 835 | |
| 836 | |
| 837 | void MacroAssembler::Cvtsd2ss(XMMRegister dst, const Operand& src) { |
| 838 | if (CpuFeatures::IsSupported(AVX)) { |
| 839 | CpuFeatureScope scope(this, AVX); |
| 840 | vcvtsd2ss(dst, dst, src); |
| 841 | } else { |
| 842 | cvtsd2ss(dst, src); |
| 843 | } |
| 844 | } |
| 845 | |
| 846 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 847 | void MacroAssembler::Cvtlsi2sd(XMMRegister dst, Register src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 848 | if (CpuFeatures::IsSupported(AVX)) { |
| 849 | CpuFeatureScope scope(this, AVX); |
| 850 | vxorpd(dst, dst, dst); |
| 851 | vcvtlsi2sd(dst, dst, src); |
| 852 | } else { |
| 853 | xorpd(dst, dst); |
| 854 | cvtlsi2sd(dst, src); |
| 855 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | |
| 859 | void MacroAssembler::Cvtlsi2sd(XMMRegister dst, const Operand& src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 860 | if (CpuFeatures::IsSupported(AVX)) { |
| 861 | CpuFeatureScope scope(this, AVX); |
| 862 | vxorpd(dst, dst, dst); |
| 863 | vcvtlsi2sd(dst, dst, src); |
| 864 | } else { |
| 865 | xorpd(dst, dst); |
| 866 | cvtlsi2sd(dst, src); |
| 867 | } |
| 868 | } |
| 869 | |
| 870 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 871 | void MacroAssembler::Cvtlsi2ss(XMMRegister dst, Register src) { |
| 872 | if (CpuFeatures::IsSupported(AVX)) { |
| 873 | CpuFeatureScope scope(this, AVX); |
| 874 | vxorps(dst, dst, dst); |
| 875 | vcvtlsi2ss(dst, dst, src); |
| 876 | } else { |
| 877 | xorps(dst, dst); |
| 878 | cvtlsi2ss(dst, src); |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | |
| 883 | void MacroAssembler::Cvtlsi2ss(XMMRegister dst, const Operand& src) { |
| 884 | if (CpuFeatures::IsSupported(AVX)) { |
| 885 | CpuFeatureScope scope(this, AVX); |
| 886 | vxorps(dst, dst, dst); |
| 887 | vcvtlsi2ss(dst, dst, src); |
| 888 | } else { |
| 889 | xorps(dst, dst); |
| 890 | cvtlsi2ss(dst, src); |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 895 | void MacroAssembler::Cvtqsi2ss(XMMRegister dst, Register src) { |
| 896 | if (CpuFeatures::IsSupported(AVX)) { |
| 897 | CpuFeatureScope scope(this, AVX); |
| 898 | vxorps(dst, dst, dst); |
| 899 | vcvtqsi2ss(dst, dst, src); |
| 900 | } else { |
| 901 | xorps(dst, dst); |
| 902 | cvtqsi2ss(dst, src); |
| 903 | } |
| 904 | } |
| 905 | |
| 906 | |
| 907 | void MacroAssembler::Cvtqsi2ss(XMMRegister dst, const Operand& src) { |
| 908 | if (CpuFeatures::IsSupported(AVX)) { |
| 909 | CpuFeatureScope scope(this, AVX); |
| 910 | vxorps(dst, dst, dst); |
| 911 | vcvtqsi2ss(dst, dst, src); |
| 912 | } else { |
| 913 | xorps(dst, dst); |
| 914 | cvtqsi2ss(dst, src); |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | |
| 919 | void MacroAssembler::Cvtqsi2sd(XMMRegister dst, Register src) { |
| 920 | if (CpuFeatures::IsSupported(AVX)) { |
| 921 | CpuFeatureScope scope(this, AVX); |
| 922 | vxorpd(dst, dst, dst); |
| 923 | vcvtqsi2sd(dst, dst, src); |
| 924 | } else { |
| 925 | xorpd(dst, dst); |
| 926 | cvtqsi2sd(dst, src); |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | |
| 931 | void MacroAssembler::Cvtqsi2sd(XMMRegister dst, const Operand& src) { |
| 932 | if (CpuFeatures::IsSupported(AVX)) { |
| 933 | CpuFeatureScope scope(this, AVX); |
| 934 | vxorpd(dst, dst, dst); |
| 935 | vcvtqsi2sd(dst, dst, src); |
| 936 | } else { |
| 937 | xorpd(dst, dst); |
| 938 | cvtqsi2sd(dst, src); |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | |
| 943 | void MacroAssembler::Cvtqui2ss(XMMRegister dst, Register src, Register tmp) { |
| 944 | Label msb_set_src; |
| 945 | Label jmp_return; |
| 946 | testq(src, src); |
| 947 | j(sign, &msb_set_src, Label::kNear); |
| 948 | Cvtqsi2ss(dst, src); |
| 949 | jmp(&jmp_return, Label::kNear); |
| 950 | bind(&msb_set_src); |
| 951 | movq(tmp, src); |
| 952 | shrq(src, Immediate(1)); |
| 953 | // Recover the least significant bit to avoid rounding errors. |
| 954 | andq(tmp, Immediate(1)); |
| 955 | orq(src, tmp); |
| 956 | Cvtqsi2ss(dst, src); |
| 957 | addss(dst, dst); |
| 958 | bind(&jmp_return); |
| 959 | } |
| 960 | |
| 961 | |
| 962 | void MacroAssembler::Cvtqui2sd(XMMRegister dst, Register src, Register tmp) { |
| 963 | Label msb_set_src; |
| 964 | Label jmp_return; |
| 965 | testq(src, src); |
| 966 | j(sign, &msb_set_src, Label::kNear); |
| 967 | Cvtqsi2sd(dst, src); |
| 968 | jmp(&jmp_return, Label::kNear); |
| 969 | bind(&msb_set_src); |
| 970 | movq(tmp, src); |
| 971 | shrq(src, Immediate(1)); |
| 972 | andq(tmp, Immediate(1)); |
| 973 | orq(src, tmp); |
| 974 | Cvtqsi2sd(dst, src); |
| 975 | addsd(dst, dst); |
| 976 | bind(&jmp_return); |
| 977 | } |
| 978 | |
| 979 | |
| 980 | void MacroAssembler::Cvtsd2si(Register dst, XMMRegister src) { |
| 981 | if (CpuFeatures::IsSupported(AVX)) { |
| 982 | CpuFeatureScope scope(this, AVX); |
| 983 | vcvtsd2si(dst, src); |
| 984 | } else { |
| 985 | cvtsd2si(dst, src); |
| 986 | } |
| 987 | } |
| 988 | |
| 989 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 990 | void MacroAssembler::Cvttss2si(Register dst, XMMRegister src) { |
| 991 | if (CpuFeatures::IsSupported(AVX)) { |
| 992 | CpuFeatureScope scope(this, AVX); |
| 993 | vcvttss2si(dst, src); |
| 994 | } else { |
| 995 | cvttss2si(dst, src); |
| 996 | } |
| 997 | } |
| 998 | |
| 999 | |
| 1000 | void MacroAssembler::Cvttss2si(Register dst, const Operand& src) { |
| 1001 | if (CpuFeatures::IsSupported(AVX)) { |
| 1002 | CpuFeatureScope scope(this, AVX); |
| 1003 | vcvttss2si(dst, src); |
| 1004 | } else { |
| 1005 | cvttss2si(dst, src); |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1010 | void MacroAssembler::Cvttsd2si(Register dst, XMMRegister src) { |
| 1011 | if (CpuFeatures::IsSupported(AVX)) { |
| 1012 | CpuFeatureScope scope(this, AVX); |
| 1013 | vcvttsd2si(dst, src); |
| 1014 | } else { |
| 1015 | cvttsd2si(dst, src); |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | |
| 1020 | void MacroAssembler::Cvttsd2si(Register dst, const Operand& src) { |
| 1021 | if (CpuFeatures::IsSupported(AVX)) { |
| 1022 | CpuFeatureScope scope(this, AVX); |
| 1023 | vcvttsd2si(dst, src); |
| 1024 | } else { |
| 1025 | cvttsd2si(dst, src); |
| 1026 | } |
| 1027 | } |
| 1028 | |
| 1029 | |
| 1030 | void MacroAssembler::Cvttss2siq(Register dst, XMMRegister src) { |
| 1031 | if (CpuFeatures::IsSupported(AVX)) { |
| 1032 | CpuFeatureScope scope(this, AVX); |
| 1033 | vcvttss2siq(dst, src); |
| 1034 | } else { |
| 1035 | cvttss2siq(dst, src); |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | |
| 1040 | void MacroAssembler::Cvttss2siq(Register dst, const Operand& src) { |
| 1041 | if (CpuFeatures::IsSupported(AVX)) { |
| 1042 | CpuFeatureScope scope(this, AVX); |
| 1043 | vcvttss2siq(dst, src); |
| 1044 | } else { |
| 1045 | cvttss2siq(dst, src); |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | void MacroAssembler::Cvttsd2siq(Register dst, XMMRegister src) { |
| 1051 | if (CpuFeatures::IsSupported(AVX)) { |
| 1052 | CpuFeatureScope scope(this, AVX); |
| 1053 | vcvttsd2siq(dst, src); |
| 1054 | } else { |
| 1055 | cvttsd2siq(dst, src); |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | void MacroAssembler::Cvttsd2siq(Register dst, const Operand& src) { |
| 1061 | if (CpuFeatures::IsSupported(AVX)) { |
| 1062 | CpuFeatureScope scope(this, AVX); |
| 1063 | vcvttsd2siq(dst, src); |
| 1064 | } else { |
| 1065 | cvttsd2siq(dst, src); |
| 1066 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | void MacroAssembler::Load(Register dst, const Operand& src, Representation r) { |
| 1071 | DCHECK(!r.IsDouble()); |
| 1072 | if (r.IsInteger8()) { |
| 1073 | movsxbq(dst, src); |
| 1074 | } else if (r.IsUInteger8()) { |
| 1075 | movzxbl(dst, src); |
| 1076 | } else if (r.IsInteger16()) { |
| 1077 | movsxwq(dst, src); |
| 1078 | } else if (r.IsUInteger16()) { |
| 1079 | movzxwl(dst, src); |
| 1080 | } else if (r.IsInteger32()) { |
| 1081 | movl(dst, src); |
| 1082 | } else { |
| 1083 | movp(dst, src); |
| 1084 | } |
| 1085 | } |
| 1086 | |
| 1087 | |
| 1088 | void MacroAssembler::Store(const Operand& dst, Register src, Representation r) { |
| 1089 | DCHECK(!r.IsDouble()); |
| 1090 | if (r.IsInteger8() || r.IsUInteger8()) { |
| 1091 | movb(dst, src); |
| 1092 | } else if (r.IsInteger16() || r.IsUInteger16()) { |
| 1093 | movw(dst, src); |
| 1094 | } else if (r.IsInteger32()) { |
| 1095 | movl(dst, src); |
| 1096 | } else { |
| 1097 | if (r.IsHeapObject()) { |
| 1098 | AssertNotSmi(src); |
| 1099 | } else if (r.IsSmi()) { |
| 1100 | AssertSmi(src); |
| 1101 | } |
| 1102 | movp(dst, src); |
| 1103 | } |
| 1104 | } |
| 1105 | |
| 1106 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1107 | void MacroAssembler::Set(Register dst, int64_t x) { |
| 1108 | if (x == 0) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1109 | xorl(dst, dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1110 | } else if (is_uint32(x)) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1111 | movl(dst, Immediate(static_cast<uint32_t>(x))); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1112 | } else if (is_int32(x)) { |
| 1113 | movq(dst, Immediate(static_cast<int32_t>(x))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1114 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1115 | movq(dst, x); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1116 | } |
| 1117 | } |
| 1118 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1119 | void MacroAssembler::Set(const Operand& dst, intptr_t x) { |
| 1120 | if (kPointerSize == kInt64Size) { |
| 1121 | if (is_int32(x)) { |
| 1122 | movp(dst, Immediate(static_cast<int32_t>(x))); |
| 1123 | } else { |
| 1124 | Set(kScratchRegister, x); |
| 1125 | movp(dst, kScratchRegister); |
| 1126 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1127 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1128 | movp(dst, Immediate(static_cast<int32_t>(x))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1129 | } |
| 1130 | } |
| 1131 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1132 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1133 | // ---------------------------------------------------------------------------- |
| 1134 | // Smi tagging, untagging and tag detection. |
| 1135 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1136 | bool MacroAssembler::IsUnsafeInt(const int32_t x) { |
| 1137 | static const int kMaxBits = 17; |
| 1138 | return !is_intn(x, kMaxBits); |
| 1139 | } |
| 1140 | |
| 1141 | |
| 1142 | void MacroAssembler::SafeMove(Register dst, Smi* src) { |
| 1143 | DCHECK(!dst.is(kScratchRegister)); |
| 1144 | if (IsUnsafeInt(src->value()) && jit_cookie() != 0) { |
| 1145 | if (SmiValuesAre32Bits()) { |
| 1146 | // JIT cookie can be converted to Smi. |
| 1147 | Move(dst, Smi::FromInt(src->value() ^ jit_cookie())); |
| 1148 | Move(kScratchRegister, Smi::FromInt(jit_cookie())); |
| 1149 | xorp(dst, kScratchRegister); |
| 1150 | } else { |
| 1151 | DCHECK(SmiValuesAre31Bits()); |
| 1152 | int32_t value = static_cast<int32_t>(reinterpret_cast<intptr_t>(src)); |
| 1153 | movp(dst, Immediate(value ^ jit_cookie())); |
| 1154 | xorp(dst, Immediate(jit_cookie())); |
| 1155 | } |
| 1156 | } else { |
| 1157 | Move(dst, src); |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | |
| 1162 | void MacroAssembler::SafePush(Smi* src) { |
| 1163 | if (IsUnsafeInt(src->value()) && jit_cookie() != 0) { |
| 1164 | if (SmiValuesAre32Bits()) { |
| 1165 | // JIT cookie can be converted to Smi. |
| 1166 | Push(Smi::FromInt(src->value() ^ jit_cookie())); |
| 1167 | Move(kScratchRegister, Smi::FromInt(jit_cookie())); |
| 1168 | xorp(Operand(rsp, 0), kScratchRegister); |
| 1169 | } else { |
| 1170 | DCHECK(SmiValuesAre31Bits()); |
| 1171 | int32_t value = static_cast<int32_t>(reinterpret_cast<intptr_t>(src)); |
| 1172 | Push(Immediate(value ^ jit_cookie())); |
| 1173 | xorp(Operand(rsp, 0), Immediate(jit_cookie())); |
| 1174 | } |
| 1175 | } else { |
| 1176 | Push(src); |
| 1177 | } |
| 1178 | } |
| 1179 | |
| 1180 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1181 | Register MacroAssembler::GetSmiConstant(Smi* source) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1182 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1183 | int value = source->value(); |
| 1184 | if (value == 0) { |
| 1185 | xorl(kScratchRegister, kScratchRegister); |
| 1186 | return kScratchRegister; |
| 1187 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1188 | LoadSmiConstant(kScratchRegister, source); |
| 1189 | return kScratchRegister; |
| 1190 | } |
| 1191 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1192 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1193 | void MacroAssembler::LoadSmiConstant(Register dst, Smi* source) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1194 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1195 | int value = source->value(); |
| 1196 | if (value == 0) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1197 | xorl(dst, dst); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1198 | } else { |
| 1199 | Move(dst, source, Assembler::RelocInfoNone()); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1200 | } |
| 1201 | } |
| 1202 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1203 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1204 | void MacroAssembler::Integer32ToSmi(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1205 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1206 | if (!dst.is(src)) { |
| 1207 | movl(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1208 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1209 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1213 | void MacroAssembler::Integer32ToSmiField(const Operand& dst, Register src) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1214 | if (emit_debug_code()) { |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1215 | testb(dst, Immediate(0x01)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1216 | Label ok; |
| 1217 | j(zero, &ok, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1218 | Abort(kInteger32ToSmiFieldWritingToNonSmiLocation); |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1219 | bind(&ok); |
| 1220 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1221 | |
| 1222 | if (SmiValuesAre32Bits()) { |
| 1223 | DCHECK(kSmiShift % kBitsPerByte == 0); |
| 1224 | movl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1225 | } else { |
| 1226 | DCHECK(SmiValuesAre31Bits()); |
| 1227 | Integer32ToSmi(kScratchRegister, src); |
| 1228 | movp(dst, kScratchRegister); |
| 1229 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1230 | } |
| 1231 | |
| 1232 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1233 | void MacroAssembler::Integer64PlusConstantToSmi(Register dst, |
| 1234 | Register src, |
| 1235 | int constant) { |
| 1236 | if (dst.is(src)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1237 | addl(dst, Immediate(constant)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1238 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1239 | leal(dst, Operand(src, constant)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1240 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1241 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1242 | } |
| 1243 | |
| 1244 | |
| 1245 | void MacroAssembler::SmiToInteger32(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1246 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1247 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1248 | movp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1249 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1250 | |
| 1251 | if (SmiValuesAre32Bits()) { |
| 1252 | shrp(dst, Immediate(kSmiShift)); |
| 1253 | } else { |
| 1254 | DCHECK(SmiValuesAre31Bits()); |
| 1255 | sarl(dst, Immediate(kSmiShift)); |
| 1256 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1257 | } |
| 1258 | |
| 1259 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1260 | void MacroAssembler::SmiToInteger32(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1261 | if (SmiValuesAre32Bits()) { |
| 1262 | movl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 1263 | } else { |
| 1264 | DCHECK(SmiValuesAre31Bits()); |
| 1265 | movl(dst, src); |
| 1266 | sarl(dst, Immediate(kSmiShift)); |
| 1267 | } |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1271 | void MacroAssembler::SmiToInteger64(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1272 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1273 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1274 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1275 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1276 | sarp(dst, Immediate(kSmiShift)); |
| 1277 | if (kPointerSize == kInt32Size) { |
| 1278 | // Sign extend to 64-bit. |
| 1279 | movsxlq(dst, dst); |
| 1280 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1281 | } |
| 1282 | |
| 1283 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1284 | void MacroAssembler::SmiToInteger64(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1285 | if (SmiValuesAre32Bits()) { |
| 1286 | movsxlq(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 1287 | } else { |
| 1288 | DCHECK(SmiValuesAre31Bits()); |
| 1289 | movp(dst, src); |
| 1290 | SmiToInteger64(dst, dst); |
| 1291 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1292 | } |
| 1293 | |
| 1294 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1295 | void MacroAssembler::SmiTest(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1296 | AssertSmi(src); |
| 1297 | testp(src, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1298 | } |
| 1299 | |
| 1300 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1301 | void MacroAssembler::SmiCompare(Register smi1, Register smi2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1302 | AssertSmi(smi1); |
| 1303 | AssertSmi(smi2); |
| 1304 | cmpp(smi1, smi2); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | void MacroAssembler::SmiCompare(Register dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1309 | AssertSmi(dst); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1310 | Cmp(dst, src); |
| 1311 | } |
| 1312 | |
| 1313 | |
| 1314 | void MacroAssembler::Cmp(Register dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1315 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1316 | if (src->value() == 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1317 | testp(dst, dst); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1318 | } else { |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 1319 | Register constant_reg = GetSmiConstant(src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1320 | cmpp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1325 | void MacroAssembler::SmiCompare(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1326 | AssertSmi(dst); |
| 1327 | AssertSmi(src); |
| 1328 | cmpp(dst, src); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1329 | } |
| 1330 | |
| 1331 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1332 | void MacroAssembler::SmiCompare(const Operand& dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1333 | AssertSmi(dst); |
| 1334 | AssertSmi(src); |
| 1335 | cmpp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1336 | } |
| 1337 | |
| 1338 | |
| 1339 | void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1340 | AssertSmi(dst); |
| 1341 | if (SmiValuesAre32Bits()) { |
| 1342 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value())); |
| 1343 | } else { |
| 1344 | DCHECK(SmiValuesAre31Bits()); |
| 1345 | cmpl(dst, Immediate(src)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1346 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1347 | } |
| 1348 | |
| 1349 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1350 | void MacroAssembler::Cmp(const Operand& dst, Smi* src) { |
| 1351 | // The Operand cannot use the smi register. |
| 1352 | Register smi_reg = GetSmiConstant(src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1353 | DCHECK(!dst.AddressUsesRegister(smi_reg)); |
| 1354 | cmpp(dst, smi_reg); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1355 | } |
| 1356 | |
| 1357 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1358 | void MacroAssembler::SmiCompareInteger32(const Operand& dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1359 | if (SmiValuesAre32Bits()) { |
| 1360 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1361 | } else { |
| 1362 | DCHECK(SmiValuesAre31Bits()); |
| 1363 | SmiToInteger32(kScratchRegister, dst); |
| 1364 | cmpl(kScratchRegister, src); |
| 1365 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1366 | } |
| 1367 | |
| 1368 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1369 | void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst, |
| 1370 | Register src, |
| 1371 | int power) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1372 | DCHECK(power >= 0); |
| 1373 | DCHECK(power < 64); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1374 | if (power == 0) { |
| 1375 | SmiToInteger64(dst, src); |
| 1376 | return; |
| 1377 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1378 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1379 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1380 | } |
| 1381 | if (power < kSmiShift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1382 | sarp(dst, Immediate(kSmiShift - power)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1383 | } else if (power > kSmiShift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1384 | shlp(dst, Immediate(power - kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1385 | } |
| 1386 | } |
| 1387 | |
| 1388 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1389 | void MacroAssembler::PositiveSmiDivPowerOfTwoToInteger32(Register dst, |
| 1390 | Register src, |
| 1391 | int power) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1392 | DCHECK((0 <= power) && (power < 32)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1393 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1394 | shrp(dst, Immediate(power + kSmiShift)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1395 | } else { |
| 1396 | UNIMPLEMENTED(); // Not used. |
| 1397 | } |
| 1398 | } |
| 1399 | |
| 1400 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1401 | void MacroAssembler::SmiOrIfSmis(Register dst, Register src1, Register src2, |
| 1402 | Label* on_not_smis, |
| 1403 | Label::Distance near_jump) { |
| 1404 | if (dst.is(src1) || dst.is(src2)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1405 | DCHECK(!src1.is(kScratchRegister)); |
| 1406 | DCHECK(!src2.is(kScratchRegister)); |
| 1407 | movp(kScratchRegister, src1); |
| 1408 | orp(kScratchRegister, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1409 | JumpIfNotSmi(kScratchRegister, on_not_smis, near_jump); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1410 | movp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1411 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1412 | movp(dst, src1); |
| 1413 | orp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1414 | JumpIfNotSmi(dst, on_not_smis, near_jump); |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1419 | Condition MacroAssembler::CheckSmi(Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1420 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1421 | testb(src, Immediate(kSmiTagMask)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1422 | return zero; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1423 | } |
| 1424 | |
| 1425 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1426 | Condition MacroAssembler::CheckSmi(const Operand& src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1427 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1428 | testb(src, Immediate(kSmiTagMask)); |
| 1429 | return zero; |
| 1430 | } |
| 1431 | |
| 1432 | |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1433 | Condition MacroAssembler::CheckNonNegativeSmi(Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1434 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1435 | // Test that both bits of the mask 0x8000000000000001 are zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1436 | movp(kScratchRegister, src); |
| 1437 | rolp(kScratchRegister, Immediate(1)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1438 | testb(kScratchRegister, Immediate(3)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1439 | return zero; |
| 1440 | } |
| 1441 | |
| 1442 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1443 | Condition MacroAssembler::CheckBothSmi(Register first, Register second) { |
| 1444 | if (first.is(second)) { |
| 1445 | return CheckSmi(first); |
| 1446 | } |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1447 | STATIC_ASSERT(kSmiTag == 0 && kHeapObjectTag == 1 && kHeapObjectTagMask == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1448 | if (SmiValuesAre32Bits()) { |
| 1449 | leal(kScratchRegister, Operand(first, second, times_1, 0)); |
| 1450 | testb(kScratchRegister, Immediate(0x03)); |
| 1451 | } else { |
| 1452 | DCHECK(SmiValuesAre31Bits()); |
| 1453 | movl(kScratchRegister, first); |
| 1454 | orl(kScratchRegister, second); |
| 1455 | testb(kScratchRegister, Immediate(kSmiTagMask)); |
| 1456 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1457 | return zero; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1458 | } |
| 1459 | |
| 1460 | |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1461 | Condition MacroAssembler::CheckBothNonNegativeSmi(Register first, |
| 1462 | Register second) { |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1463 | if (first.is(second)) { |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1464 | return CheckNonNegativeSmi(first); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1465 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1466 | movp(kScratchRegister, first); |
| 1467 | orp(kScratchRegister, second); |
| 1468 | rolp(kScratchRegister, Immediate(1)); |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1469 | testl(kScratchRegister, Immediate(3)); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1470 | return zero; |
| 1471 | } |
| 1472 | |
| 1473 | |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1474 | Condition MacroAssembler::CheckEitherSmi(Register first, |
| 1475 | Register second, |
| 1476 | Register scratch) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1477 | if (first.is(second)) { |
| 1478 | return CheckSmi(first); |
| 1479 | } |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1480 | if (scratch.is(second)) { |
| 1481 | andl(scratch, first); |
| 1482 | } else { |
| 1483 | if (!scratch.is(first)) { |
| 1484 | movl(scratch, first); |
| 1485 | } |
| 1486 | andl(scratch, second); |
| 1487 | } |
| 1488 | testb(scratch, Immediate(kSmiTagMask)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1489 | return zero; |
| 1490 | } |
| 1491 | |
| 1492 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1493 | Condition MacroAssembler::CheckInteger32ValidSmiValue(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1494 | if (SmiValuesAre32Bits()) { |
| 1495 | // A 32-bit integer value can always be converted to a smi. |
| 1496 | return always; |
| 1497 | } else { |
| 1498 | DCHECK(SmiValuesAre31Bits()); |
| 1499 | cmpl(src, Immediate(0xc0000000)); |
| 1500 | return positive; |
| 1501 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1502 | } |
| 1503 | |
| 1504 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1505 | Condition MacroAssembler::CheckUInteger32ValidSmiValue(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1506 | if (SmiValuesAre32Bits()) { |
| 1507 | // An unsigned 32-bit integer value is valid as long as the high bit |
| 1508 | // is not set. |
| 1509 | testl(src, src); |
| 1510 | return positive; |
| 1511 | } else { |
| 1512 | DCHECK(SmiValuesAre31Bits()); |
| 1513 | testl(src, Immediate(0xc0000000)); |
| 1514 | return zero; |
| 1515 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1516 | } |
| 1517 | |
| 1518 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1519 | void MacroAssembler::CheckSmiToIndicator(Register dst, Register src) { |
| 1520 | if (dst.is(src)) { |
| 1521 | andl(dst, Immediate(kSmiTagMask)); |
| 1522 | } else { |
| 1523 | movl(dst, Immediate(kSmiTagMask)); |
| 1524 | andl(dst, src); |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | |
| 1529 | void MacroAssembler::CheckSmiToIndicator(Register dst, const Operand& src) { |
| 1530 | if (!(src.AddressUsesRegister(dst))) { |
| 1531 | movl(dst, Immediate(kSmiTagMask)); |
| 1532 | andl(dst, src); |
| 1533 | } else { |
| 1534 | movl(dst, src); |
| 1535 | andl(dst, Immediate(kSmiTagMask)); |
| 1536 | } |
| 1537 | } |
| 1538 | |
| 1539 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1540 | void MacroAssembler::JumpIfValidSmiValue(Register src, |
| 1541 | Label* on_valid, |
| 1542 | Label::Distance near_jump) { |
| 1543 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1544 | j(is_valid, on_valid, near_jump); |
| 1545 | } |
| 1546 | |
| 1547 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1548 | void MacroAssembler::JumpIfNotValidSmiValue(Register src, |
| 1549 | Label* on_invalid, |
| 1550 | Label::Distance near_jump) { |
| 1551 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1552 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1553 | } |
| 1554 | |
| 1555 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1556 | void MacroAssembler::JumpIfUIntValidSmiValue(Register src, |
| 1557 | Label* on_valid, |
| 1558 | Label::Distance near_jump) { |
| 1559 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1560 | j(is_valid, on_valid, near_jump); |
| 1561 | } |
| 1562 | |
| 1563 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1564 | void MacroAssembler::JumpIfUIntNotValidSmiValue(Register src, |
| 1565 | Label* on_invalid, |
| 1566 | Label::Distance near_jump) { |
| 1567 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1568 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1569 | } |
| 1570 | |
| 1571 | |
| 1572 | void MacroAssembler::JumpIfSmi(Register src, |
| 1573 | Label* on_smi, |
| 1574 | Label::Distance near_jump) { |
| 1575 | Condition smi = CheckSmi(src); |
| 1576 | j(smi, on_smi, near_jump); |
| 1577 | } |
| 1578 | |
| 1579 | |
| 1580 | void MacroAssembler::JumpIfNotSmi(Register src, |
| 1581 | Label* on_not_smi, |
| 1582 | Label::Distance near_jump) { |
| 1583 | Condition smi = CheckSmi(src); |
| 1584 | j(NegateCondition(smi), on_not_smi, near_jump); |
| 1585 | } |
| 1586 | |
| 1587 | |
| 1588 | void MacroAssembler::JumpUnlessNonNegativeSmi( |
| 1589 | Register src, Label* on_not_smi_or_negative, |
| 1590 | Label::Distance near_jump) { |
| 1591 | Condition non_negative_smi = CheckNonNegativeSmi(src); |
| 1592 | j(NegateCondition(non_negative_smi), on_not_smi_or_negative, near_jump); |
| 1593 | } |
| 1594 | |
| 1595 | |
| 1596 | void MacroAssembler::JumpIfSmiEqualsConstant(Register src, |
| 1597 | Smi* constant, |
| 1598 | Label* on_equals, |
| 1599 | Label::Distance near_jump) { |
| 1600 | SmiCompare(src, constant); |
| 1601 | j(equal, on_equals, near_jump); |
| 1602 | } |
| 1603 | |
| 1604 | |
| 1605 | void MacroAssembler::JumpIfNotBothSmi(Register src1, |
| 1606 | Register src2, |
| 1607 | Label* on_not_both_smi, |
| 1608 | Label::Distance near_jump) { |
| 1609 | Condition both_smi = CheckBothSmi(src1, src2); |
| 1610 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1611 | } |
| 1612 | |
| 1613 | |
| 1614 | void MacroAssembler::JumpUnlessBothNonNegativeSmi(Register src1, |
| 1615 | Register src2, |
| 1616 | Label* on_not_both_smi, |
| 1617 | Label::Distance near_jump) { |
| 1618 | Condition both_smi = CheckBothNonNegativeSmi(src1, src2); |
| 1619 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1620 | } |
| 1621 | |
| 1622 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1623 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) { |
| 1624 | if (constant->value() == 0) { |
| 1625 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1626 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1627 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1628 | return; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1629 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1630 | DCHECK(!dst.is(kScratchRegister)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1631 | Register constant_reg = GetSmiConstant(constant); |
| 1632 | addp(dst, constant_reg); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1633 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1634 | LoadSmiConstant(dst, constant); |
| 1635 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1636 | } |
| 1637 | } |
| 1638 | |
| 1639 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1640 | void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) { |
| 1641 | if (constant->value() != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1642 | if (SmiValuesAre32Bits()) { |
| 1643 | addl(Operand(dst, kSmiShift / kBitsPerByte), |
| 1644 | Immediate(constant->value())); |
| 1645 | } else { |
| 1646 | DCHECK(SmiValuesAre31Bits()); |
| 1647 | addp(dst, Immediate(constant)); |
| 1648 | } |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1649 | } |
| 1650 | } |
| 1651 | |
| 1652 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1653 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant, |
| 1654 | SmiOperationConstraints constraints, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1655 | Label* bailout_label, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1656 | Label::Distance near_jump) { |
| 1657 | if (constant->value() == 0) { |
| 1658 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1659 | movp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1660 | } |
| 1661 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1662 | DCHECK(!dst.is(kScratchRegister)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1663 | LoadSmiConstant(kScratchRegister, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1664 | addp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1665 | if (constraints & SmiOperationConstraint::kBailoutOnNoOverflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1666 | j(no_overflow, bailout_label, near_jump); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1667 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1668 | subp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1669 | } else if (constraints & SmiOperationConstraint::kBailoutOnOverflow) { |
| 1670 | if (constraints & SmiOperationConstraint::kPreserveSourceRegister) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1671 | Label done; |
| 1672 | j(no_overflow, &done, Label::kNear); |
| 1673 | subp(dst, kScratchRegister); |
| 1674 | jmp(bailout_label, near_jump); |
| 1675 | bind(&done); |
| 1676 | } else { |
| 1677 | // Bailout if overflow without reserving src. |
| 1678 | j(overflow, bailout_label, near_jump); |
| 1679 | } |
| 1680 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1681 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1682 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1683 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1684 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
| 1685 | DCHECK(constraints & SmiOperationConstraint::kBailoutOnOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1686 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1687 | addp(dst, src); |
| 1688 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1689 | } |
| 1690 | } |
| 1691 | |
| 1692 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1693 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant) { |
| 1694 | if (constant->value() == 0) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1695 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1696 | movp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1697 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1698 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1699 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1700 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1701 | subp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1702 | } else { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1703 | if (constant->value() == Smi::kMinValue) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1704 | LoadSmiConstant(dst, constant); |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1705 | // Adding and subtracting the min-value gives the same result, it only |
| 1706 | // differs on the overflow bit, which we don't check here. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1707 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1708 | } else { |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1709 | // Subtract by adding the negation. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1710 | LoadSmiConstant(dst, Smi::FromInt(-constant->value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1711 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1712 | } |
| 1713 | } |
| 1714 | } |
| 1715 | |
| 1716 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1717 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant, |
| 1718 | SmiOperationConstraints constraints, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1719 | Label* bailout_label, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1720 | Label::Distance near_jump) { |
| 1721 | if (constant->value() == 0) { |
| 1722 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1723 | movp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1724 | } |
| 1725 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1726 | DCHECK(!dst.is(kScratchRegister)); |
| 1727 | LoadSmiConstant(kScratchRegister, constant); |
| 1728 | subp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1729 | if (constraints & SmiOperationConstraint::kBailoutOnNoOverflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1730 | j(no_overflow, bailout_label, near_jump); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1731 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1732 | addp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1733 | } else if (constraints & SmiOperationConstraint::kBailoutOnOverflow) { |
| 1734 | if (constraints & SmiOperationConstraint::kPreserveSourceRegister) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1735 | Label done; |
| 1736 | j(no_overflow, &done, Label::kNear); |
| 1737 | addp(dst, kScratchRegister); |
| 1738 | jmp(bailout_label, near_jump); |
| 1739 | bind(&done); |
| 1740 | } else { |
| 1741 | // Bailout if overflow without reserving src. |
| 1742 | j(overflow, bailout_label, near_jump); |
| 1743 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1744 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1745 | UNREACHABLE(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1746 | } |
| 1747 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1748 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
| 1749 | DCHECK(constraints & SmiOperationConstraint::kBailoutOnOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1750 | if (constant->value() == Smi::kMinValue) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1751 | DCHECK(!dst.is(kScratchRegister)); |
| 1752 | movp(dst, src); |
| 1753 | LoadSmiConstant(kScratchRegister, constant); |
| 1754 | subp(dst, kScratchRegister); |
| 1755 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1756 | } else { |
| 1757 | // Subtract by adding the negation. |
| 1758 | LoadSmiConstant(dst, Smi::FromInt(-(constant->value()))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1759 | addp(dst, src); |
| 1760 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1761 | } |
| 1762 | } |
| 1763 | } |
| 1764 | |
| 1765 | |
| 1766 | void MacroAssembler::SmiNeg(Register dst, |
| 1767 | Register src, |
| 1768 | Label* on_smi_result, |
| 1769 | Label::Distance near_jump) { |
| 1770 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1771 | DCHECK(!dst.is(kScratchRegister)); |
| 1772 | movp(kScratchRegister, src); |
| 1773 | negp(dst); // Low 32 bits are retained as zero by negation. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1774 | // Test if result is zero or Smi::kMinValue. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1775 | cmpp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1776 | j(not_equal, on_smi_result, near_jump); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1777 | movp(src, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1778 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1779 | movp(dst, src); |
| 1780 | negp(dst); |
| 1781 | cmpp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1782 | // If the result is zero or Smi::kMinValue, negation failed to create a smi. |
| 1783 | j(not_equal, on_smi_result, near_jump); |
| 1784 | } |
| 1785 | } |
| 1786 | |
| 1787 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1788 | template<class T> |
| 1789 | static void SmiAddHelper(MacroAssembler* masm, |
| 1790 | Register dst, |
| 1791 | Register src1, |
| 1792 | T src2, |
| 1793 | Label* on_not_smi_result, |
| 1794 | Label::Distance near_jump) { |
| 1795 | if (dst.is(src1)) { |
| 1796 | Label done; |
| 1797 | masm->addp(dst, src2); |
| 1798 | masm->j(no_overflow, &done, Label::kNear); |
| 1799 | // Restore src1. |
| 1800 | masm->subp(dst, src2); |
| 1801 | masm->jmp(on_not_smi_result, near_jump); |
| 1802 | masm->bind(&done); |
| 1803 | } else { |
| 1804 | masm->movp(dst, src1); |
| 1805 | masm->addp(dst, src2); |
| 1806 | masm->j(overflow, on_not_smi_result, near_jump); |
| 1807 | } |
| 1808 | } |
| 1809 | |
| 1810 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1811 | void MacroAssembler::SmiAdd(Register dst, |
| 1812 | Register src1, |
| 1813 | Register src2, |
| 1814 | Label* on_not_smi_result, |
| 1815 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1816 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1817 | DCHECK(!dst.is(src2)); |
| 1818 | SmiAddHelper<Register>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1819 | } |
| 1820 | |
| 1821 | |
| 1822 | void MacroAssembler::SmiAdd(Register dst, |
| 1823 | Register src1, |
| 1824 | const Operand& src2, |
| 1825 | Label* on_not_smi_result, |
| 1826 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1827 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1828 | DCHECK(!src2.AddressUsesRegister(dst)); |
| 1829 | SmiAddHelper<Operand>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1830 | } |
| 1831 | |
| 1832 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1833 | void MacroAssembler::SmiAdd(Register dst, |
| 1834 | Register src1, |
| 1835 | Register src2) { |
| 1836 | // No overflow checking. Use only when it's known that |
| 1837 | // overflowing is impossible. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1838 | if (!dst.is(src1)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1839 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1840 | movp(kScratchRegister, src1); |
| 1841 | addp(kScratchRegister, src2); |
| 1842 | Check(no_overflow, kSmiAdditionOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1843 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1844 | leap(dst, Operand(src1, src2, times_1, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1845 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1846 | addp(dst, src2); |
| 1847 | Assert(no_overflow, kSmiAdditionOverflow); |
| 1848 | } |
| 1849 | } |
| 1850 | |
| 1851 | |
| 1852 | template<class T> |
| 1853 | static void SmiSubHelper(MacroAssembler* masm, |
| 1854 | Register dst, |
| 1855 | Register src1, |
| 1856 | T src2, |
| 1857 | Label* on_not_smi_result, |
| 1858 | Label::Distance near_jump) { |
| 1859 | if (dst.is(src1)) { |
| 1860 | Label done; |
| 1861 | masm->subp(dst, src2); |
| 1862 | masm->j(no_overflow, &done, Label::kNear); |
| 1863 | // Restore src1. |
| 1864 | masm->addp(dst, src2); |
| 1865 | masm->jmp(on_not_smi_result, near_jump); |
| 1866 | masm->bind(&done); |
| 1867 | } else { |
| 1868 | masm->movp(dst, src1); |
| 1869 | masm->subp(dst, src2); |
| 1870 | masm->j(overflow, on_not_smi_result, near_jump); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1871 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1872 | } |
| 1873 | |
| 1874 | |
| 1875 | void MacroAssembler::SmiSub(Register dst, |
| 1876 | Register src1, |
| 1877 | Register src2, |
| 1878 | Label* on_not_smi_result, |
| 1879 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1880 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1881 | DCHECK(!dst.is(src2)); |
| 1882 | SmiSubHelper<Register>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1883 | } |
| 1884 | |
| 1885 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1886 | void MacroAssembler::SmiSub(Register dst, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1887 | Register src1, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1888 | const Operand& src2, |
| 1889 | Label* on_not_smi_result, |
| 1890 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1891 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1892 | DCHECK(!src2.AddressUsesRegister(dst)); |
| 1893 | SmiSubHelper<Operand>(this, dst, src1, src2, on_not_smi_result, near_jump); |
| 1894 | } |
| 1895 | |
| 1896 | |
| 1897 | template<class T> |
| 1898 | static void SmiSubNoOverflowHelper(MacroAssembler* masm, |
| 1899 | Register dst, |
| 1900 | Register src1, |
| 1901 | T src2) { |
| 1902 | // No overflow checking. Use only when it's known that |
| 1903 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1904 | if (!dst.is(src1)) { |
| 1905 | masm->movp(dst, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1906 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1907 | masm->subp(dst, src2); |
| 1908 | masm->Assert(no_overflow, kSmiSubtractionOverflow); |
| 1909 | } |
| 1910 | |
| 1911 | |
| 1912 | void MacroAssembler::SmiSub(Register dst, Register src1, Register src2) { |
| 1913 | DCHECK(!dst.is(src2)); |
| 1914 | SmiSubNoOverflowHelper<Register>(this, dst, src1, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1915 | } |
| 1916 | |
| 1917 | |
| 1918 | void MacroAssembler::SmiSub(Register dst, |
| 1919 | Register src1, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1920 | const Operand& src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1921 | SmiSubNoOverflowHelper<Operand>(this, dst, src1, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1922 | } |
| 1923 | |
| 1924 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1925 | void MacroAssembler::SmiMul(Register dst, |
| 1926 | Register src1, |
| 1927 | Register src2, |
| 1928 | Label* on_not_smi_result, |
| 1929 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1930 | DCHECK(!dst.is(src2)); |
| 1931 | DCHECK(!dst.is(kScratchRegister)); |
| 1932 | DCHECK(!src1.is(kScratchRegister)); |
| 1933 | DCHECK(!src2.is(kScratchRegister)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1934 | |
| 1935 | if (dst.is(src1)) { |
| 1936 | Label failure, zero_correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1937 | movp(kScratchRegister, src1); // Create backup for later testing. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1938 | SmiToInteger64(dst, src1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1939 | imulp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1940 | j(overflow, &failure, Label::kNear); |
| 1941 | |
| 1942 | // Check for negative zero result. If product is zero, and one |
| 1943 | // argument is negative, go to slow case. |
| 1944 | Label correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1945 | testp(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1946 | j(not_zero, &correct_result, Label::kNear); |
| 1947 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1948 | movp(dst, kScratchRegister); |
| 1949 | xorp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1950 | // Result was positive zero. |
| 1951 | j(positive, &zero_correct_result, Label::kNear); |
| 1952 | |
| 1953 | bind(&failure); // Reused failure exit, restores src1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1954 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1955 | jmp(on_not_smi_result, near_jump); |
| 1956 | |
| 1957 | bind(&zero_correct_result); |
| 1958 | Set(dst, 0); |
| 1959 | |
| 1960 | bind(&correct_result); |
| 1961 | } else { |
| 1962 | SmiToInteger64(dst, src1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1963 | imulp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1964 | j(overflow, on_not_smi_result, near_jump); |
| 1965 | // Check for negative zero result. If product is zero, and one |
| 1966 | // argument is negative, go to slow case. |
| 1967 | Label correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1968 | testp(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1969 | j(not_zero, &correct_result, Label::kNear); |
| 1970 | // One of src1 and src2 is zero, the check whether the other is |
| 1971 | // negative. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1972 | movp(kScratchRegister, src1); |
| 1973 | xorp(kScratchRegister, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1974 | j(negative, on_not_smi_result, near_jump); |
| 1975 | bind(&correct_result); |
| 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | |
| 1980 | void MacroAssembler::SmiDiv(Register dst, |
| 1981 | Register src1, |
| 1982 | Register src2, |
| 1983 | Label* on_not_smi_result, |
| 1984 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1985 | DCHECK(!src1.is(kScratchRegister)); |
| 1986 | DCHECK(!src2.is(kScratchRegister)); |
| 1987 | DCHECK(!dst.is(kScratchRegister)); |
| 1988 | DCHECK(!src2.is(rax)); |
| 1989 | DCHECK(!src2.is(rdx)); |
| 1990 | DCHECK(!src1.is(rdx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1991 | |
| 1992 | // Check for 0 divisor (result is +/-Infinity). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1993 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1994 | j(zero, on_not_smi_result, near_jump); |
| 1995 | |
| 1996 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1997 | movp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1998 | } |
| 1999 | SmiToInteger32(rax, src1); |
| 2000 | // We need to rule out dividing Smi::kMinValue by -1, since that would |
| 2001 | // overflow in idiv and raise an exception. |
| 2002 | // We combine this with negative zero test (negative zero only happens |
| 2003 | // when dividing zero by a negative number). |
| 2004 | |
| 2005 | // We overshoot a little and go to slow case if we divide min-value |
| 2006 | // by any negative value, not just -1. |
| 2007 | Label safe_div; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2008 | testl(rax, Immediate(~Smi::kMinValue)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2009 | j(not_zero, &safe_div, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2010 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2011 | if (src1.is(rax)) { |
| 2012 | j(positive, &safe_div, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2013 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2014 | jmp(on_not_smi_result, near_jump); |
| 2015 | } else { |
| 2016 | j(negative, on_not_smi_result, near_jump); |
| 2017 | } |
| 2018 | bind(&safe_div); |
| 2019 | |
| 2020 | SmiToInteger32(src2, src2); |
| 2021 | // Sign extend src1 into edx:eax. |
| 2022 | cdq(); |
| 2023 | idivl(src2); |
| 2024 | Integer32ToSmi(src2, src2); |
| 2025 | // Check that the remainder is zero. |
| 2026 | testl(rdx, rdx); |
| 2027 | if (src1.is(rax)) { |
| 2028 | Label smi_result; |
| 2029 | j(zero, &smi_result, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2030 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2031 | jmp(on_not_smi_result, near_jump); |
| 2032 | bind(&smi_result); |
| 2033 | } else { |
| 2034 | j(not_zero, on_not_smi_result, near_jump); |
| 2035 | } |
| 2036 | if (!dst.is(src1) && src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2037 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2038 | } |
| 2039 | Integer32ToSmi(dst, rax); |
| 2040 | } |
| 2041 | |
| 2042 | |
| 2043 | void MacroAssembler::SmiMod(Register dst, |
| 2044 | Register src1, |
| 2045 | Register src2, |
| 2046 | Label* on_not_smi_result, |
| 2047 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2048 | DCHECK(!dst.is(kScratchRegister)); |
| 2049 | DCHECK(!src1.is(kScratchRegister)); |
| 2050 | DCHECK(!src2.is(kScratchRegister)); |
| 2051 | DCHECK(!src2.is(rax)); |
| 2052 | DCHECK(!src2.is(rdx)); |
| 2053 | DCHECK(!src1.is(rdx)); |
| 2054 | DCHECK(!src1.is(src2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2055 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2056 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2057 | j(zero, on_not_smi_result, near_jump); |
| 2058 | |
| 2059 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2060 | movp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2061 | } |
| 2062 | SmiToInteger32(rax, src1); |
| 2063 | SmiToInteger32(src2, src2); |
| 2064 | |
| 2065 | // Test for the edge case of dividing Smi::kMinValue by -1 (will overflow). |
| 2066 | Label safe_div; |
| 2067 | cmpl(rax, Immediate(Smi::kMinValue)); |
| 2068 | j(not_equal, &safe_div, Label::kNear); |
| 2069 | cmpl(src2, Immediate(-1)); |
| 2070 | j(not_equal, &safe_div, Label::kNear); |
| 2071 | // Retag inputs and go slow case. |
| 2072 | Integer32ToSmi(src2, src2); |
| 2073 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2074 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2075 | } |
| 2076 | jmp(on_not_smi_result, near_jump); |
| 2077 | bind(&safe_div); |
| 2078 | |
| 2079 | // Sign extend eax into edx:eax. |
| 2080 | cdq(); |
| 2081 | idivl(src2); |
| 2082 | // Restore smi tags on inputs. |
| 2083 | Integer32ToSmi(src2, src2); |
| 2084 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2085 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2086 | } |
| 2087 | // Check for a negative zero result. If the result is zero, and the |
| 2088 | // dividend is negative, go slow to return a floating point negative zero. |
| 2089 | Label smi_result; |
| 2090 | testl(rdx, rdx); |
| 2091 | j(not_zero, &smi_result, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2092 | testp(src1, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2093 | j(negative, on_not_smi_result, near_jump); |
| 2094 | bind(&smi_result); |
| 2095 | Integer32ToSmi(dst, rdx); |
| 2096 | } |
| 2097 | |
| 2098 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2099 | void MacroAssembler::SmiNot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2100 | DCHECK(!dst.is(kScratchRegister)); |
| 2101 | DCHECK(!src.is(kScratchRegister)); |
| 2102 | if (SmiValuesAre32Bits()) { |
| 2103 | // Set tag and padding bits before negating, so that they are zero |
| 2104 | // afterwards. |
| 2105 | movl(kScratchRegister, Immediate(~0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2106 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2107 | DCHECK(SmiValuesAre31Bits()); |
| 2108 | movl(kScratchRegister, Immediate(1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2109 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2110 | if (dst.is(src)) { |
| 2111 | xorp(dst, kScratchRegister); |
| 2112 | } else { |
| 2113 | leap(dst, Operand(src, kScratchRegister, times_1, 0)); |
| 2114 | } |
| 2115 | notp(dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2116 | } |
| 2117 | |
| 2118 | |
| 2119 | void MacroAssembler::SmiAnd(Register dst, Register src1, Register src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2120 | DCHECK(!dst.is(src2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2121 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2122 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2123 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2124 | andp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2125 | } |
| 2126 | |
| 2127 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2128 | void MacroAssembler::SmiAndConstant(Register dst, Register src, Smi* constant) { |
| 2129 | if (constant->value() == 0) { |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 2130 | Set(dst, 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2131 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2132 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2133 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2134 | andp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2135 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2136 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2137 | andp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2138 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2139 | } |
| 2140 | |
| 2141 | |
| 2142 | void MacroAssembler::SmiOr(Register dst, Register src1, Register src2) { |
| 2143 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2144 | DCHECK(!src1.is(src2)); |
| 2145 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2146 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2147 | orp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2148 | } |
| 2149 | |
| 2150 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2151 | void MacroAssembler::SmiOrConstant(Register dst, Register src, Smi* constant) { |
| 2152 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2153 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2154 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2155 | orp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2156 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2157 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2158 | orp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2159 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2160 | } |
| 2161 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2162 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2163 | void MacroAssembler::SmiXor(Register dst, Register src1, Register src2) { |
| 2164 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2165 | DCHECK(!src1.is(src2)); |
| 2166 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2167 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2168 | xorp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2169 | } |
| 2170 | |
| 2171 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2172 | void MacroAssembler::SmiXorConstant(Register dst, Register src, Smi* constant) { |
| 2173 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2174 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2175 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2176 | xorp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2177 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2178 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2179 | xorp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2180 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2181 | } |
| 2182 | |
| 2183 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2184 | void MacroAssembler::SmiShiftArithmeticRightConstant(Register dst, |
| 2185 | Register src, |
| 2186 | int shift_value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2187 | DCHECK(is_uint5(shift_value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2188 | if (shift_value > 0) { |
| 2189 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2190 | sarp(dst, Immediate(shift_value + kSmiShift)); |
| 2191 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2192 | } else { |
| 2193 | UNIMPLEMENTED(); // Not used. |
| 2194 | } |
| 2195 | } |
| 2196 | } |
| 2197 | |
| 2198 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2199 | void MacroAssembler::SmiShiftLeftConstant(Register dst, |
| 2200 | Register src, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2201 | int shift_value, |
| 2202 | Label* on_not_smi_result, |
| 2203 | Label::Distance near_jump) { |
| 2204 | if (SmiValuesAre32Bits()) { |
| 2205 | if (!dst.is(src)) { |
| 2206 | movp(dst, src); |
| 2207 | } |
| 2208 | if (shift_value > 0) { |
| 2209 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 2210 | shlq(dst, Immediate(shift_value & 0x1f)); |
| 2211 | } |
| 2212 | } else { |
| 2213 | DCHECK(SmiValuesAre31Bits()); |
| 2214 | if (dst.is(src)) { |
| 2215 | UNIMPLEMENTED(); // Not used. |
| 2216 | } else { |
| 2217 | SmiToInteger32(dst, src); |
| 2218 | shll(dst, Immediate(shift_value)); |
| 2219 | JumpIfNotValidSmiValue(dst, on_not_smi_result, near_jump); |
| 2220 | Integer32ToSmi(dst, dst); |
| 2221 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2222 | } |
| 2223 | } |
| 2224 | |
| 2225 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2226 | void MacroAssembler::SmiShiftLogicalRightConstant( |
| 2227 | Register dst, Register src, int shift_value, |
| 2228 | Label* on_not_smi_result, Label::Distance near_jump) { |
| 2229 | // Logic right shift interprets its result as an *unsigned* number. |
| 2230 | if (dst.is(src)) { |
| 2231 | UNIMPLEMENTED(); // Not used. |
| 2232 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2233 | if (shift_value == 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2234 | testp(src, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2235 | j(negative, on_not_smi_result, near_jump); |
| 2236 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2237 | if (SmiValuesAre32Bits()) { |
| 2238 | movp(dst, src); |
| 2239 | shrp(dst, Immediate(shift_value + kSmiShift)); |
| 2240 | shlp(dst, Immediate(kSmiShift)); |
| 2241 | } else { |
| 2242 | DCHECK(SmiValuesAre31Bits()); |
| 2243 | SmiToInteger32(dst, src); |
| 2244 | shrp(dst, Immediate(shift_value)); |
| 2245 | JumpIfUIntNotValidSmiValue(dst, on_not_smi_result, near_jump); |
| 2246 | Integer32ToSmi(dst, dst); |
| 2247 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2248 | } |
| 2249 | } |
| 2250 | |
| 2251 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2252 | void MacroAssembler::SmiShiftLeft(Register dst, |
| 2253 | Register src1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2254 | Register src2, |
| 2255 | Label* on_not_smi_result, |
| 2256 | Label::Distance near_jump) { |
| 2257 | if (SmiValuesAre32Bits()) { |
| 2258 | DCHECK(!dst.is(rcx)); |
| 2259 | if (!dst.is(src1)) { |
| 2260 | movp(dst, src1); |
| 2261 | } |
| 2262 | // Untag shift amount. |
| 2263 | SmiToInteger32(rcx, src2); |
| 2264 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 2265 | andp(rcx, Immediate(0x1f)); |
| 2266 | shlq_cl(dst); |
| 2267 | } else { |
| 2268 | DCHECK(SmiValuesAre31Bits()); |
| 2269 | DCHECK(!dst.is(kScratchRegister)); |
| 2270 | DCHECK(!src1.is(kScratchRegister)); |
| 2271 | DCHECK(!src2.is(kScratchRegister)); |
| 2272 | DCHECK(!dst.is(src2)); |
| 2273 | DCHECK(!dst.is(rcx)); |
| 2274 | |
| 2275 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2276 | movq(kScratchRegister, rcx); |
| 2277 | } |
| 2278 | if (dst.is(src1)) { |
| 2279 | UNIMPLEMENTED(); // Not used. |
| 2280 | } else { |
| 2281 | Label valid_result; |
| 2282 | SmiToInteger32(dst, src1); |
| 2283 | SmiToInteger32(rcx, src2); |
| 2284 | shll_cl(dst); |
| 2285 | JumpIfValidSmiValue(dst, &valid_result, Label::kNear); |
| 2286 | // As src1 or src2 could not be dst, we do not need to restore them for |
| 2287 | // clobbering dst. |
| 2288 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2289 | if (src1.is(rcx)) { |
| 2290 | movq(src1, kScratchRegister); |
| 2291 | } else { |
| 2292 | movq(src2, kScratchRegister); |
| 2293 | } |
| 2294 | } |
| 2295 | jmp(on_not_smi_result, near_jump); |
| 2296 | bind(&valid_result); |
| 2297 | Integer32ToSmi(dst, dst); |
| 2298 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2299 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2300 | } |
| 2301 | |
| 2302 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2303 | void MacroAssembler::SmiShiftLogicalRight(Register dst, |
| 2304 | Register src1, |
| 2305 | Register src2, |
| 2306 | Label* on_not_smi_result, |
| 2307 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2308 | DCHECK(!dst.is(kScratchRegister)); |
| 2309 | DCHECK(!src1.is(kScratchRegister)); |
| 2310 | DCHECK(!src2.is(kScratchRegister)); |
| 2311 | DCHECK(!dst.is(src2)); |
| 2312 | DCHECK(!dst.is(rcx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2313 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2314 | movq(kScratchRegister, rcx); |
| 2315 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2316 | if (dst.is(src1)) { |
| 2317 | UNIMPLEMENTED(); // Not used. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2318 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2319 | Label valid_result; |
| 2320 | SmiToInteger32(dst, src1); |
| 2321 | SmiToInteger32(rcx, src2); |
| 2322 | shrl_cl(dst); |
| 2323 | JumpIfUIntValidSmiValue(dst, &valid_result, Label::kNear); |
| 2324 | // As src1 or src2 could not be dst, we do not need to restore them for |
| 2325 | // clobbering dst. |
| 2326 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2327 | if (src1.is(rcx)) { |
| 2328 | movq(src1, kScratchRegister); |
| 2329 | } else { |
| 2330 | movq(src2, kScratchRegister); |
| 2331 | } |
| 2332 | } |
| 2333 | jmp(on_not_smi_result, near_jump); |
| 2334 | bind(&valid_result); |
| 2335 | Integer32ToSmi(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2336 | } |
| 2337 | } |
| 2338 | |
| 2339 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2340 | void MacroAssembler::SmiShiftArithmeticRight(Register dst, |
| 2341 | Register src1, |
| 2342 | Register src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2343 | DCHECK(!dst.is(kScratchRegister)); |
| 2344 | DCHECK(!src1.is(kScratchRegister)); |
| 2345 | DCHECK(!src2.is(kScratchRegister)); |
| 2346 | DCHECK(!dst.is(rcx)); |
| 2347 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2348 | SmiToInteger32(rcx, src2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2349 | if (!dst.is(src1)) { |
| 2350 | movp(dst, src1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2351 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2352 | SmiToInteger32(dst, dst); |
| 2353 | sarl_cl(dst); |
| 2354 | Integer32ToSmi(dst, dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2355 | } |
| 2356 | |
| 2357 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2358 | void MacroAssembler::SelectNonSmi(Register dst, |
| 2359 | Register src1, |
| 2360 | Register src2, |
| 2361 | Label* on_not_smis, |
| 2362 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2363 | DCHECK(!dst.is(kScratchRegister)); |
| 2364 | DCHECK(!src1.is(kScratchRegister)); |
| 2365 | DCHECK(!src2.is(kScratchRegister)); |
| 2366 | DCHECK(!dst.is(src1)); |
| 2367 | DCHECK(!dst.is(src2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2368 | // Both operands must not be smis. |
| 2369 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2370 | Condition not_both_smis = NegateCondition(CheckBothSmi(src1, src2)); |
| 2371 | Check(not_both_smis, kBothRegistersWereSmisInSelectNonSmi); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2372 | #endif |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2373 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2374 | DCHECK_EQ(static_cast<Smi*>(0), Smi::FromInt(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2375 | movl(kScratchRegister, Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2376 | andp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2377 | testl(kScratchRegister, src2); |
| 2378 | // If non-zero then both are smis. |
| 2379 | j(not_zero, on_not_smis, near_jump); |
| 2380 | |
| 2381 | // Exactly one operand is a smi. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2382 | DCHECK_EQ(1, static_cast<int>(kSmiTagMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2383 | // kScratchRegister still holds src1 & kSmiTag, which is either zero or one. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2384 | subp(kScratchRegister, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2385 | // If src1 is a smi, then scratch register all 1s, else it is all 0s. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2386 | movp(dst, src1); |
| 2387 | xorp(dst, src2); |
| 2388 | andp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2389 | // If src1 is a smi, dst holds src1 ^ src2, else it is zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2390 | xorp(dst, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2391 | // If src1 is a smi, dst is src2, else it is src1, i.e., the non-smi. |
| 2392 | } |
| 2393 | |
| 2394 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2395 | SmiIndex MacroAssembler::SmiToIndex(Register dst, |
| 2396 | Register src, |
| 2397 | int shift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2398 | if (SmiValuesAre32Bits()) { |
| 2399 | DCHECK(is_uint6(shift)); |
| 2400 | // There is a possible optimization if shift is in the range 60-63, but that |
| 2401 | // will (and must) never happen. |
| 2402 | if (!dst.is(src)) { |
| 2403 | movp(dst, src); |
| 2404 | } |
| 2405 | if (shift < kSmiShift) { |
| 2406 | sarp(dst, Immediate(kSmiShift - shift)); |
| 2407 | } else { |
| 2408 | shlp(dst, Immediate(shift - kSmiShift)); |
| 2409 | } |
| 2410 | return SmiIndex(dst, times_1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2411 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2412 | DCHECK(SmiValuesAre31Bits()); |
| 2413 | DCHECK(shift >= times_1 && shift <= (static_cast<int>(times_8) + 1)); |
| 2414 | if (!dst.is(src)) { |
| 2415 | movp(dst, src); |
| 2416 | } |
| 2417 | // We have to sign extend the index register to 64-bit as the SMI might |
| 2418 | // be negative. |
| 2419 | movsxlq(dst, dst); |
| 2420 | if (shift == times_1) { |
| 2421 | sarq(dst, Immediate(kSmiShift)); |
| 2422 | return SmiIndex(dst, times_1); |
| 2423 | } |
| 2424 | return SmiIndex(dst, static_cast<ScaleFactor>(shift - 1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2425 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2426 | } |
| 2427 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2428 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2429 | SmiIndex MacroAssembler::SmiToNegativeIndex(Register dst, |
| 2430 | Register src, |
| 2431 | int shift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2432 | if (SmiValuesAre32Bits()) { |
| 2433 | // Register src holds a positive smi. |
| 2434 | DCHECK(is_uint6(shift)); |
| 2435 | if (!dst.is(src)) { |
| 2436 | movp(dst, src); |
| 2437 | } |
| 2438 | negp(dst); |
| 2439 | if (shift < kSmiShift) { |
| 2440 | sarp(dst, Immediate(kSmiShift - shift)); |
| 2441 | } else { |
| 2442 | shlp(dst, Immediate(shift - kSmiShift)); |
| 2443 | } |
| 2444 | return SmiIndex(dst, times_1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2445 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2446 | DCHECK(SmiValuesAre31Bits()); |
| 2447 | DCHECK(shift >= times_1 && shift <= (static_cast<int>(times_8) + 1)); |
| 2448 | if (!dst.is(src)) { |
| 2449 | movp(dst, src); |
| 2450 | } |
| 2451 | negq(dst); |
| 2452 | if (shift == times_1) { |
| 2453 | sarq(dst, Immediate(kSmiShift)); |
| 2454 | return SmiIndex(dst, times_1); |
| 2455 | } |
| 2456 | return SmiIndex(dst, static_cast<ScaleFactor>(shift - 1)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2457 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2458 | } |
| 2459 | |
| 2460 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2461 | void MacroAssembler::AddSmiField(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2462 | if (SmiValuesAre32Bits()) { |
| 2463 | DCHECK_EQ(0, kSmiShift % kBitsPerByte); |
| 2464 | addl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 2465 | } else { |
| 2466 | DCHECK(SmiValuesAre31Bits()); |
| 2467 | SmiToInteger32(kScratchRegister, src); |
| 2468 | addl(dst, kScratchRegister); |
| 2469 | } |
| 2470 | } |
| 2471 | |
| 2472 | |
| 2473 | void MacroAssembler::Push(Smi* source) { |
| 2474 | intptr_t smi = reinterpret_cast<intptr_t>(source); |
| 2475 | if (is_int32(smi)) { |
| 2476 | Push(Immediate(static_cast<int32_t>(smi))); |
| 2477 | } else { |
| 2478 | Register constant = GetSmiConstant(source); |
| 2479 | Push(constant); |
| 2480 | } |
| 2481 | } |
| 2482 | |
| 2483 | |
| 2484 | void MacroAssembler::PushRegisterAsTwoSmis(Register src, Register scratch) { |
| 2485 | DCHECK(!src.is(scratch)); |
| 2486 | movp(scratch, src); |
| 2487 | // High bits. |
| 2488 | shrp(src, Immediate(kPointerSize * kBitsPerByte - kSmiShift)); |
| 2489 | shlp(src, Immediate(kSmiShift)); |
| 2490 | Push(src); |
| 2491 | // Low bits. |
| 2492 | shlp(scratch, Immediate(kSmiShift)); |
| 2493 | Push(scratch); |
| 2494 | } |
| 2495 | |
| 2496 | |
| 2497 | void MacroAssembler::PopRegisterAsTwoSmis(Register dst, Register scratch) { |
| 2498 | DCHECK(!dst.is(scratch)); |
| 2499 | Pop(scratch); |
| 2500 | // Low bits. |
| 2501 | shrp(scratch, Immediate(kSmiShift)); |
| 2502 | Pop(dst); |
| 2503 | shrp(dst, Immediate(kSmiShift)); |
| 2504 | // High bits. |
| 2505 | shlp(dst, Immediate(kPointerSize * kBitsPerByte - kSmiShift)); |
| 2506 | orp(dst, scratch); |
| 2507 | } |
| 2508 | |
| 2509 | |
| 2510 | void MacroAssembler::Test(const Operand& src, Smi* source) { |
| 2511 | if (SmiValuesAre32Bits()) { |
| 2512 | testl(Operand(src, kIntSize), Immediate(source->value())); |
| 2513 | } else { |
| 2514 | DCHECK(SmiValuesAre31Bits()); |
| 2515 | testl(src, Immediate(source)); |
| 2516 | } |
| 2517 | } |
| 2518 | |
| 2519 | |
| 2520 | // ---------------------------------------------------------------------------- |
| 2521 | |
| 2522 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2523 | void MacroAssembler::JumpIfNotString(Register object, |
| 2524 | Register object_map, |
| 2525 | Label* not_string, |
| 2526 | Label::Distance near_jump) { |
| 2527 | Condition is_smi = CheckSmi(object); |
| 2528 | j(is_smi, not_string, near_jump); |
| 2529 | CmpObjectType(object, FIRST_NONSTRING_TYPE, object_map); |
| 2530 | j(above_equal, not_string, near_jump); |
| 2531 | } |
| 2532 | |
| 2533 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2534 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings( |
| 2535 | Register first_object, Register second_object, Register scratch1, |
| 2536 | Register scratch2, Label* on_fail, Label::Distance near_jump) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2537 | // Check that both objects are not smis. |
| 2538 | Condition either_smi = CheckEitherSmi(first_object, second_object); |
| 2539 | j(either_smi, on_fail, near_jump); |
| 2540 | |
| 2541 | // Load instance type for both strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2542 | movp(scratch1, FieldOperand(first_object, HeapObject::kMapOffset)); |
| 2543 | movp(scratch2, FieldOperand(second_object, HeapObject::kMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2544 | movzxbl(scratch1, FieldOperand(scratch1, Map::kInstanceTypeOffset)); |
| 2545 | movzxbl(scratch2, FieldOperand(scratch2, Map::kInstanceTypeOffset)); |
| 2546 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2547 | // Check that both are flat one-byte strings. |
| 2548 | DCHECK(kNotStringTag != 0); |
| 2549 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2550 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2551 | const int kFlatOneByteStringTag = |
| 2552 | kStringTag | kOneByteStringTag | kSeqStringTag; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2553 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2554 | andl(scratch1, Immediate(kFlatOneByteStringMask)); |
| 2555 | andl(scratch2, Immediate(kFlatOneByteStringMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2556 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2557 | DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
| 2558 | leap(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2559 | cmpl(scratch1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2560 | Immediate(kFlatOneByteStringTag + (kFlatOneByteStringTag << 3))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2561 | j(not_equal, on_fail, near_jump); |
| 2562 | } |
| 2563 | |
| 2564 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2565 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte( |
| 2566 | Register instance_type, Register scratch, Label* failure, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2567 | Label::Distance near_jump) { |
| 2568 | if (!scratch.is(instance_type)) { |
| 2569 | movl(scratch, instance_type); |
| 2570 | } |
| 2571 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2572 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2573 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 2574 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2575 | andl(scratch, Immediate(kFlatOneByteStringMask)); |
| 2576 | cmpl(scratch, Immediate(kStringTag | kSeqStringTag | kOneByteStringTag)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2577 | j(not_equal, failure, near_jump); |
| 2578 | } |
| 2579 | |
| 2580 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2581 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 2582 | Register first_object_instance_type, Register second_object_instance_type, |
| 2583 | Register scratch1, Register scratch2, Label* on_fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2584 | Label::Distance near_jump) { |
| 2585 | // Load instance type for both strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2586 | movp(scratch1, first_object_instance_type); |
| 2587 | movp(scratch2, second_object_instance_type); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2588 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2589 | // Check that both are flat one-byte strings. |
| 2590 | DCHECK(kNotStringTag != 0); |
| 2591 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2592 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2593 | const int kFlatOneByteStringTag = |
| 2594 | kStringTag | kOneByteStringTag | kSeqStringTag; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2595 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2596 | andl(scratch1, Immediate(kFlatOneByteStringMask)); |
| 2597 | andl(scratch2, Immediate(kFlatOneByteStringMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2598 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2599 | DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
| 2600 | leap(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2601 | cmpl(scratch1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2602 | Immediate(kFlatOneByteStringTag + (kFlatOneByteStringTag << 3))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2603 | j(not_equal, on_fail, near_jump); |
| 2604 | } |
| 2605 | |
| 2606 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2607 | template<class T> |
| 2608 | static void JumpIfNotUniqueNameHelper(MacroAssembler* masm, |
| 2609 | T operand_or_register, |
| 2610 | Label* not_unique_name, |
| 2611 | Label::Distance distance) { |
| 2612 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 2613 | Label succeed; |
| 2614 | masm->testb(operand_or_register, |
| 2615 | Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 2616 | masm->j(zero, &succeed, Label::kNear); |
| 2617 | masm->cmpb(operand_or_register, Immediate(static_cast<uint8_t>(SYMBOL_TYPE))); |
| 2618 | masm->j(not_equal, not_unique_name, distance); |
| 2619 | |
| 2620 | masm->bind(&succeed); |
| 2621 | } |
| 2622 | |
| 2623 | |
| 2624 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Operand operand, |
| 2625 | Label* not_unique_name, |
| 2626 | Label::Distance distance) { |
| 2627 | JumpIfNotUniqueNameHelper<Operand>(this, operand, not_unique_name, distance); |
| 2628 | } |
| 2629 | |
| 2630 | |
| 2631 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 2632 | Label* not_unique_name, |
| 2633 | Label::Distance distance) { |
| 2634 | JumpIfNotUniqueNameHelper<Register>(this, reg, not_unique_name, distance); |
| 2635 | } |
| 2636 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2637 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2638 | void MacroAssembler::Move(Register dst, Register src) { |
| 2639 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2640 | movp(dst, src); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2641 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2642 | } |
| 2643 | |
| 2644 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2645 | void MacroAssembler::Move(Register dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2646 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2647 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2648 | Move(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2649 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2650 | MoveHeapObject(dst, source); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2651 | } |
| 2652 | } |
| 2653 | |
| 2654 | |
| 2655 | void MacroAssembler::Move(const Operand& dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2656 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2657 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2658 | Move(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2659 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2660 | MoveHeapObject(kScratchRegister, source); |
| 2661 | movp(dst, kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2662 | } |
| 2663 | } |
| 2664 | |
| 2665 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2666 | void MacroAssembler::Move(XMMRegister dst, uint32_t src) { |
| 2667 | if (src == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2668 | Xorpd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2669 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2670 | unsigned pop = base::bits::CountPopulation32(src); |
| 2671 | DCHECK_NE(0u, pop); |
| 2672 | if (pop == 32) { |
| 2673 | Pcmpeqd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2674 | } else { |
| 2675 | movl(kScratchRegister, Immediate(src)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2676 | Movq(dst, kScratchRegister); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2677 | } |
| 2678 | } |
| 2679 | } |
| 2680 | |
| 2681 | |
| 2682 | void MacroAssembler::Move(XMMRegister dst, uint64_t src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2683 | if (src == 0) { |
| 2684 | Xorpd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2685 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2686 | unsigned nlz = base::bits::CountLeadingZeros64(src); |
| 2687 | unsigned ntz = base::bits::CountTrailingZeros64(src); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2688 | unsigned pop = base::bits::CountPopulation64(src); |
| 2689 | DCHECK_NE(0u, pop); |
| 2690 | if (pop == 64) { |
| 2691 | Pcmpeqd(dst, dst); |
| 2692 | } else if (pop + ntz == 64) { |
| 2693 | Pcmpeqd(dst, dst); |
| 2694 | Psllq(dst, ntz); |
| 2695 | } else if (pop + nlz == 64) { |
| 2696 | Pcmpeqd(dst, dst); |
| 2697 | Psrlq(dst, nlz); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2698 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2699 | uint32_t lower = static_cast<uint32_t>(src); |
| 2700 | uint32_t upper = static_cast<uint32_t>(src >> 32); |
| 2701 | if (upper == 0) { |
| 2702 | Move(dst, lower); |
| 2703 | } else { |
| 2704 | movq(kScratchRegister, src); |
| 2705 | Movq(dst, kScratchRegister); |
| 2706 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2707 | } |
| 2708 | } |
| 2709 | } |
| 2710 | |
| 2711 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2712 | void MacroAssembler::Movaps(XMMRegister dst, XMMRegister src) { |
| 2713 | if (CpuFeatures::IsSupported(AVX)) { |
| 2714 | CpuFeatureScope scope(this, AVX); |
| 2715 | vmovaps(dst, src); |
| 2716 | } else { |
| 2717 | movaps(dst, src); |
| 2718 | } |
| 2719 | } |
| 2720 | |
| 2721 | |
| 2722 | void MacroAssembler::Movapd(XMMRegister dst, XMMRegister src) { |
| 2723 | if (CpuFeatures::IsSupported(AVX)) { |
| 2724 | CpuFeatureScope scope(this, AVX); |
| 2725 | vmovapd(dst, src); |
| 2726 | } else { |
| 2727 | movapd(dst, src); |
| 2728 | } |
| 2729 | } |
| 2730 | |
| 2731 | |
| 2732 | void MacroAssembler::Movsd(XMMRegister dst, XMMRegister src) { |
| 2733 | if (CpuFeatures::IsSupported(AVX)) { |
| 2734 | CpuFeatureScope scope(this, AVX); |
| 2735 | vmovsd(dst, dst, src); |
| 2736 | } else { |
| 2737 | movsd(dst, src); |
| 2738 | } |
| 2739 | } |
| 2740 | |
| 2741 | |
| 2742 | void MacroAssembler::Movsd(XMMRegister dst, const Operand& src) { |
| 2743 | if (CpuFeatures::IsSupported(AVX)) { |
| 2744 | CpuFeatureScope scope(this, AVX); |
| 2745 | vmovsd(dst, src); |
| 2746 | } else { |
| 2747 | movsd(dst, src); |
| 2748 | } |
| 2749 | } |
| 2750 | |
| 2751 | |
| 2752 | void MacroAssembler::Movsd(const Operand& dst, XMMRegister src) { |
| 2753 | if (CpuFeatures::IsSupported(AVX)) { |
| 2754 | CpuFeatureScope scope(this, AVX); |
| 2755 | vmovsd(dst, src); |
| 2756 | } else { |
| 2757 | movsd(dst, src); |
| 2758 | } |
| 2759 | } |
| 2760 | |
| 2761 | |
| 2762 | void MacroAssembler::Movss(XMMRegister dst, XMMRegister src) { |
| 2763 | if (CpuFeatures::IsSupported(AVX)) { |
| 2764 | CpuFeatureScope scope(this, AVX); |
| 2765 | vmovss(dst, dst, src); |
| 2766 | } else { |
| 2767 | movss(dst, src); |
| 2768 | } |
| 2769 | } |
| 2770 | |
| 2771 | |
| 2772 | void MacroAssembler::Movss(XMMRegister dst, const Operand& src) { |
| 2773 | if (CpuFeatures::IsSupported(AVX)) { |
| 2774 | CpuFeatureScope scope(this, AVX); |
| 2775 | vmovss(dst, src); |
| 2776 | } else { |
| 2777 | movss(dst, src); |
| 2778 | } |
| 2779 | } |
| 2780 | |
| 2781 | |
| 2782 | void MacroAssembler::Movss(const Operand& dst, XMMRegister src) { |
| 2783 | if (CpuFeatures::IsSupported(AVX)) { |
| 2784 | CpuFeatureScope scope(this, AVX); |
| 2785 | vmovss(dst, src); |
| 2786 | } else { |
| 2787 | movss(dst, src); |
| 2788 | } |
| 2789 | } |
| 2790 | |
| 2791 | |
| 2792 | void MacroAssembler::Movd(XMMRegister dst, Register src) { |
| 2793 | if (CpuFeatures::IsSupported(AVX)) { |
| 2794 | CpuFeatureScope scope(this, AVX); |
| 2795 | vmovd(dst, src); |
| 2796 | } else { |
| 2797 | movd(dst, src); |
| 2798 | } |
| 2799 | } |
| 2800 | |
| 2801 | |
| 2802 | void MacroAssembler::Movd(XMMRegister dst, const Operand& src) { |
| 2803 | if (CpuFeatures::IsSupported(AVX)) { |
| 2804 | CpuFeatureScope scope(this, AVX); |
| 2805 | vmovd(dst, src); |
| 2806 | } else { |
| 2807 | movd(dst, src); |
| 2808 | } |
| 2809 | } |
| 2810 | |
| 2811 | |
| 2812 | void MacroAssembler::Movd(Register dst, XMMRegister src) { |
| 2813 | if (CpuFeatures::IsSupported(AVX)) { |
| 2814 | CpuFeatureScope scope(this, AVX); |
| 2815 | vmovd(dst, src); |
| 2816 | } else { |
| 2817 | movd(dst, src); |
| 2818 | } |
| 2819 | } |
| 2820 | |
| 2821 | |
| 2822 | void MacroAssembler::Movq(XMMRegister dst, Register src) { |
| 2823 | if (CpuFeatures::IsSupported(AVX)) { |
| 2824 | CpuFeatureScope scope(this, AVX); |
| 2825 | vmovq(dst, src); |
| 2826 | } else { |
| 2827 | movq(dst, src); |
| 2828 | } |
| 2829 | } |
| 2830 | |
| 2831 | |
| 2832 | void MacroAssembler::Movq(Register dst, XMMRegister src) { |
| 2833 | if (CpuFeatures::IsSupported(AVX)) { |
| 2834 | CpuFeatureScope scope(this, AVX); |
| 2835 | vmovq(dst, src); |
| 2836 | } else { |
| 2837 | movq(dst, src); |
| 2838 | } |
| 2839 | } |
| 2840 | |
| 2841 | |
| 2842 | void MacroAssembler::Movmskpd(Register dst, XMMRegister src) { |
| 2843 | if (CpuFeatures::IsSupported(AVX)) { |
| 2844 | CpuFeatureScope scope(this, AVX); |
| 2845 | vmovmskpd(dst, src); |
| 2846 | } else { |
| 2847 | movmskpd(dst, src); |
| 2848 | } |
| 2849 | } |
| 2850 | |
| 2851 | |
| 2852 | void MacroAssembler::Roundss(XMMRegister dst, XMMRegister src, |
| 2853 | RoundingMode mode) { |
| 2854 | if (CpuFeatures::IsSupported(AVX)) { |
| 2855 | CpuFeatureScope scope(this, AVX); |
| 2856 | vroundss(dst, dst, src, mode); |
| 2857 | } else { |
| 2858 | roundss(dst, src, mode); |
| 2859 | } |
| 2860 | } |
| 2861 | |
| 2862 | |
| 2863 | void MacroAssembler::Roundsd(XMMRegister dst, XMMRegister src, |
| 2864 | RoundingMode mode) { |
| 2865 | if (CpuFeatures::IsSupported(AVX)) { |
| 2866 | CpuFeatureScope scope(this, AVX); |
| 2867 | vroundsd(dst, dst, src, mode); |
| 2868 | } else { |
| 2869 | roundsd(dst, src, mode); |
| 2870 | } |
| 2871 | } |
| 2872 | |
| 2873 | |
| 2874 | void MacroAssembler::Sqrtsd(XMMRegister dst, XMMRegister src) { |
| 2875 | if (CpuFeatures::IsSupported(AVX)) { |
| 2876 | CpuFeatureScope scope(this, AVX); |
| 2877 | vsqrtsd(dst, dst, src); |
| 2878 | } else { |
| 2879 | sqrtsd(dst, src); |
| 2880 | } |
| 2881 | } |
| 2882 | |
| 2883 | |
| 2884 | void MacroAssembler::Sqrtsd(XMMRegister dst, const Operand& src) { |
| 2885 | if (CpuFeatures::IsSupported(AVX)) { |
| 2886 | CpuFeatureScope scope(this, AVX); |
| 2887 | vsqrtsd(dst, dst, src); |
| 2888 | } else { |
| 2889 | sqrtsd(dst, src); |
| 2890 | } |
| 2891 | } |
| 2892 | |
| 2893 | |
| 2894 | void MacroAssembler::Ucomiss(XMMRegister src1, XMMRegister src2) { |
| 2895 | if (CpuFeatures::IsSupported(AVX)) { |
| 2896 | CpuFeatureScope scope(this, AVX); |
| 2897 | vucomiss(src1, src2); |
| 2898 | } else { |
| 2899 | ucomiss(src1, src2); |
| 2900 | } |
| 2901 | } |
| 2902 | |
| 2903 | |
| 2904 | void MacroAssembler::Ucomiss(XMMRegister src1, const Operand& src2) { |
| 2905 | if (CpuFeatures::IsSupported(AVX)) { |
| 2906 | CpuFeatureScope scope(this, AVX); |
| 2907 | vucomiss(src1, src2); |
| 2908 | } else { |
| 2909 | ucomiss(src1, src2); |
| 2910 | } |
| 2911 | } |
| 2912 | |
| 2913 | |
| 2914 | void MacroAssembler::Ucomisd(XMMRegister src1, XMMRegister src2) { |
| 2915 | if (CpuFeatures::IsSupported(AVX)) { |
| 2916 | CpuFeatureScope scope(this, AVX); |
| 2917 | vucomisd(src1, src2); |
| 2918 | } else { |
| 2919 | ucomisd(src1, src2); |
| 2920 | } |
| 2921 | } |
| 2922 | |
| 2923 | |
| 2924 | void MacroAssembler::Ucomisd(XMMRegister src1, const Operand& src2) { |
| 2925 | if (CpuFeatures::IsSupported(AVX)) { |
| 2926 | CpuFeatureScope scope(this, AVX); |
| 2927 | vucomisd(src1, src2); |
| 2928 | } else { |
| 2929 | ucomisd(src1, src2); |
| 2930 | } |
| 2931 | } |
| 2932 | |
| 2933 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2934 | void MacroAssembler::Cmp(Register dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2935 | AllowDeferredHandleDereference smi_check; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2936 | if (source->IsSmi()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2937 | Cmp(dst, Smi::cast(*source)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2938 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2939 | MoveHeapObject(kScratchRegister, source); |
| 2940 | cmpp(dst, kScratchRegister); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2941 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2942 | } |
| 2943 | |
| 2944 | |
| 2945 | void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2946 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2947 | if (source->IsSmi()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2948 | Cmp(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2949 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2950 | MoveHeapObject(kScratchRegister, source); |
| 2951 | cmpp(dst, kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2952 | } |
| 2953 | } |
| 2954 | |
| 2955 | |
| 2956 | void MacroAssembler::Push(Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2957 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2958 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2959 | Push(Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2960 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2961 | MoveHeapObject(kScratchRegister, source); |
| 2962 | Push(kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2963 | } |
| 2964 | } |
| 2965 | |
| 2966 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2967 | void MacroAssembler::MoveHeapObject(Register result, |
| 2968 | Handle<Object> object) { |
| 2969 | AllowDeferredHandleDereference using_raw_address; |
| 2970 | DCHECK(object->IsHeapObject()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2971 | if (isolate()->heap()->InNewSpace(*object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2972 | Handle<Cell> cell = isolate()->factory()->NewCell(object); |
| 2973 | Move(result, cell, RelocInfo::CELL); |
| 2974 | movp(result, Operand(result, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2975 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2976 | Move(result, object, RelocInfo::EMBEDDED_OBJECT); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2977 | } |
| 2978 | } |
| 2979 | |
| 2980 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2981 | void MacroAssembler::LoadGlobalCell(Register dst, Handle<Cell> cell) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2982 | if (dst.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2983 | AllowDeferredHandleDereference embedding_raw_address; |
| 2984 | load_rax(cell.location(), RelocInfo::CELL); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2985 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2986 | Move(dst, cell, RelocInfo::CELL); |
| 2987 | movp(dst, Operand(dst, 0)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2988 | } |
| 2989 | } |
| 2990 | |
| 2991 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2992 | void MacroAssembler::CmpWeakValue(Register value, Handle<WeakCell> cell, |
| 2993 | Register scratch) { |
| 2994 | Move(scratch, cell, RelocInfo::EMBEDDED_OBJECT); |
| 2995 | cmpp(value, FieldOperand(scratch, WeakCell::kValueOffset)); |
| 2996 | } |
| 2997 | |
| 2998 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2999 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3000 | Move(value, cell, RelocInfo::EMBEDDED_OBJECT); |
| 3001 | movp(value, FieldOperand(value, WeakCell::kValueOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3002 | } |
| 3003 | |
| 3004 | |
| 3005 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 3006 | Label* miss) { |
| 3007 | GetWeakValue(value, cell); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3008 | JumpIfSmi(value, miss); |
| 3009 | } |
| 3010 | |
| 3011 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 3012 | void MacroAssembler::Drop(int stack_elements) { |
| 3013 | if (stack_elements > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3014 | addp(rsp, Immediate(stack_elements * kPointerSize)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 3015 | } |
| 3016 | } |
| 3017 | |
| 3018 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3019 | void MacroAssembler::DropUnderReturnAddress(int stack_elements, |
| 3020 | Register scratch) { |
| 3021 | DCHECK(stack_elements > 0); |
| 3022 | if (kPointerSize == kInt64Size && stack_elements == 1) { |
| 3023 | popq(MemOperand(rsp, 0)); |
| 3024 | return; |
| 3025 | } |
| 3026 | |
| 3027 | PopReturnAddressTo(scratch); |
| 3028 | Drop(stack_elements); |
| 3029 | PushReturnAddressFrom(scratch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3030 | } |
| 3031 | |
| 3032 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3033 | void MacroAssembler::Push(Register src) { |
| 3034 | if (kPointerSize == kInt64Size) { |
| 3035 | pushq(src); |
| 3036 | } else { |
| 3037 | // x32 uses 64-bit push for rbp in the prologue. |
| 3038 | DCHECK(src.code() != rbp.code()); |
| 3039 | leal(rsp, Operand(rsp, -4)); |
| 3040 | movp(Operand(rsp, 0), src); |
| 3041 | } |
| 3042 | } |
| 3043 | |
| 3044 | |
| 3045 | void MacroAssembler::Push(const Operand& src) { |
| 3046 | if (kPointerSize == kInt64Size) { |
| 3047 | pushq(src); |
| 3048 | } else { |
| 3049 | movp(kScratchRegister, src); |
| 3050 | leal(rsp, Operand(rsp, -4)); |
| 3051 | movp(Operand(rsp, 0), kScratchRegister); |
| 3052 | } |
| 3053 | } |
| 3054 | |
| 3055 | |
| 3056 | void MacroAssembler::PushQuad(const Operand& src) { |
| 3057 | if (kPointerSize == kInt64Size) { |
| 3058 | pushq(src); |
| 3059 | } else { |
| 3060 | movp(kScratchRegister, src); |
| 3061 | pushq(kScratchRegister); |
| 3062 | } |
| 3063 | } |
| 3064 | |
| 3065 | |
| 3066 | void MacroAssembler::Push(Immediate value) { |
| 3067 | if (kPointerSize == kInt64Size) { |
| 3068 | pushq(value); |
| 3069 | } else { |
| 3070 | leal(rsp, Operand(rsp, -4)); |
| 3071 | movp(Operand(rsp, 0), value); |
| 3072 | } |
| 3073 | } |
| 3074 | |
| 3075 | |
| 3076 | void MacroAssembler::PushImm32(int32_t imm32) { |
| 3077 | if (kPointerSize == kInt64Size) { |
| 3078 | pushq_imm32(imm32); |
| 3079 | } else { |
| 3080 | leal(rsp, Operand(rsp, -4)); |
| 3081 | movp(Operand(rsp, 0), Immediate(imm32)); |
| 3082 | } |
| 3083 | } |
| 3084 | |
| 3085 | |
| 3086 | void MacroAssembler::Pop(Register dst) { |
| 3087 | if (kPointerSize == kInt64Size) { |
| 3088 | popq(dst); |
| 3089 | } else { |
| 3090 | // x32 uses 64-bit pop for rbp in the epilogue. |
| 3091 | DCHECK(dst.code() != rbp.code()); |
| 3092 | movp(dst, Operand(rsp, 0)); |
| 3093 | leal(rsp, Operand(rsp, 4)); |
| 3094 | } |
| 3095 | } |
| 3096 | |
| 3097 | |
| 3098 | void MacroAssembler::Pop(const Operand& dst) { |
| 3099 | if (kPointerSize == kInt64Size) { |
| 3100 | popq(dst); |
| 3101 | } else { |
| 3102 | Register scratch = dst.AddressUsesRegister(kScratchRegister) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3103 | ? kRootRegister : kScratchRegister; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3104 | movp(scratch, Operand(rsp, 0)); |
| 3105 | movp(dst, scratch); |
| 3106 | leal(rsp, Operand(rsp, 4)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3107 | if (scratch.is(kRootRegister)) { |
| 3108 | // Restore kRootRegister. |
| 3109 | InitializeRootRegister(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3110 | } |
| 3111 | } |
| 3112 | } |
| 3113 | |
| 3114 | |
| 3115 | void MacroAssembler::PopQuad(const Operand& dst) { |
| 3116 | if (kPointerSize == kInt64Size) { |
| 3117 | popq(dst); |
| 3118 | } else { |
| 3119 | popq(kScratchRegister); |
| 3120 | movp(dst, kScratchRegister); |
| 3121 | } |
| 3122 | } |
| 3123 | |
| 3124 | |
| 3125 | void MacroAssembler::LoadSharedFunctionInfoSpecialField(Register dst, |
| 3126 | Register base, |
| 3127 | int offset) { |
| 3128 | DCHECK(offset > SharedFunctionInfo::kLengthOffset && |
| 3129 | offset <= SharedFunctionInfo::kSize && |
| 3130 | (((offset - SharedFunctionInfo::kLengthOffset) / kIntSize) % 2 == 1)); |
| 3131 | if (kPointerSize == kInt64Size) { |
| 3132 | movsxlq(dst, FieldOperand(base, offset)); |
| 3133 | } else { |
| 3134 | movp(dst, FieldOperand(base, offset)); |
| 3135 | SmiToInteger32(dst, dst); |
| 3136 | } |
| 3137 | } |
| 3138 | |
| 3139 | |
| 3140 | void MacroAssembler::TestBitSharedFunctionInfoSpecialField(Register base, |
| 3141 | int offset, |
| 3142 | int bits) { |
| 3143 | DCHECK(offset > SharedFunctionInfo::kLengthOffset && |
| 3144 | offset <= SharedFunctionInfo::kSize && |
| 3145 | (((offset - SharedFunctionInfo::kLengthOffset) / kIntSize) % 2 == 1)); |
| 3146 | if (kPointerSize == kInt32Size) { |
| 3147 | // On x32, this field is represented by SMI. |
| 3148 | bits += kSmiShift; |
| 3149 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3150 | int byte_offset = bits / kBitsPerByte; |
| 3151 | int bit_in_byte = bits & (kBitsPerByte - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3152 | testb(FieldOperand(base, offset + byte_offset), Immediate(1 << bit_in_byte)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3153 | } |
| 3154 | |
| 3155 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3156 | void MacroAssembler::Jump(ExternalReference ext) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3157 | LoadAddress(kScratchRegister, ext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3158 | jmp(kScratchRegister); |
| 3159 | } |
| 3160 | |
| 3161 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3162 | void MacroAssembler::Jump(const Operand& op) { |
| 3163 | if (kPointerSize == kInt64Size) { |
| 3164 | jmp(op); |
| 3165 | } else { |
| 3166 | movp(kScratchRegister, op); |
| 3167 | jmp(kScratchRegister); |
| 3168 | } |
| 3169 | } |
| 3170 | |
| 3171 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3172 | void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3173 | Move(kScratchRegister, destination, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3174 | jmp(kScratchRegister); |
| 3175 | } |
| 3176 | |
| 3177 | |
| 3178 | void MacroAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 3179 | // TODO(X64): Inline this |
| 3180 | jmp(code_object, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3181 | } |
| 3182 | |
| 3183 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3184 | int MacroAssembler::CallSize(ExternalReference ext) { |
| 3185 | // Opcode for call kScratchRegister is: Rex.B FF D4 (three bytes). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3186 | return LoadAddressSize(ext) + |
| 3187 | Assembler::kCallScratchRegisterInstructionLength; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3188 | } |
| 3189 | |
| 3190 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3191 | void MacroAssembler::Call(ExternalReference ext) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3192 | #ifdef DEBUG |
| 3193 | int end_position = pc_offset() + CallSize(ext); |
| 3194 | #endif |
| 3195 | LoadAddress(kScratchRegister, ext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3196 | call(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3197 | #ifdef DEBUG |
| 3198 | CHECK_EQ(end_position, pc_offset()); |
| 3199 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3200 | } |
| 3201 | |
| 3202 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3203 | void MacroAssembler::Call(const Operand& op) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3204 | if (kPointerSize == kInt64Size && !CpuFeatures::IsSupported(ATOM)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3205 | call(op); |
| 3206 | } else { |
| 3207 | movp(kScratchRegister, op); |
| 3208 | call(kScratchRegister); |
| 3209 | } |
| 3210 | } |
| 3211 | |
| 3212 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3213 | void MacroAssembler::Call(Address destination, RelocInfo::Mode rmode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3214 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3215 | int end_position = pc_offset() + CallSize(destination); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3216 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3217 | Move(kScratchRegister, destination, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3218 | call(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3219 | #ifdef DEBUG |
| 3220 | CHECK_EQ(pc_offset(), end_position); |
| 3221 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3222 | } |
| 3223 | |
| 3224 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3225 | void MacroAssembler::Call(Handle<Code> code_object, |
| 3226 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3227 | TypeFeedbackId ast_id) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3228 | #ifdef DEBUG |
| 3229 | int end_position = pc_offset() + CallSize(code_object); |
| 3230 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3231 | DCHECK(RelocInfo::IsCodeTarget(rmode) || |
| 3232 | rmode == RelocInfo::CODE_AGE_SEQUENCE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3233 | call(code_object, rmode, ast_id); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3234 | #ifdef DEBUG |
| 3235 | CHECK_EQ(end_position, pc_offset()); |
| 3236 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3237 | } |
| 3238 | |
| 3239 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3240 | void MacroAssembler::Pextrd(Register dst, XMMRegister src, int8_t imm8) { |
| 3241 | if (imm8 == 0) { |
| 3242 | Movd(dst, src); |
| 3243 | return; |
| 3244 | } |
| 3245 | DCHECK_EQ(1, imm8); |
| 3246 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3247 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3248 | pextrd(dst, src, imm8); |
| 3249 | return; |
| 3250 | } |
| 3251 | movq(dst, src); |
| 3252 | shrq(dst, Immediate(32)); |
| 3253 | } |
| 3254 | |
| 3255 | |
| 3256 | void MacroAssembler::Pinsrd(XMMRegister dst, Register src, int8_t imm8) { |
| 3257 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3258 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3259 | pinsrd(dst, src, imm8); |
| 3260 | return; |
| 3261 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3262 | Movd(kScratchDoubleReg, src); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3263 | if (imm8 == 1) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3264 | punpckldq(dst, kScratchDoubleReg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3265 | } else { |
| 3266 | DCHECK_EQ(0, imm8); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3267 | Movss(dst, kScratchDoubleReg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3268 | } |
| 3269 | } |
| 3270 | |
| 3271 | |
| 3272 | void MacroAssembler::Pinsrd(XMMRegister dst, const Operand& src, int8_t imm8) { |
| 3273 | DCHECK(imm8 == 0 || imm8 == 1); |
| 3274 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3275 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3276 | pinsrd(dst, src, imm8); |
| 3277 | return; |
| 3278 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3279 | Movd(kScratchDoubleReg, src); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3280 | if (imm8 == 1) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3281 | punpckldq(dst, kScratchDoubleReg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3282 | } else { |
| 3283 | DCHECK_EQ(0, imm8); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3284 | Movss(dst, kScratchDoubleReg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3285 | } |
| 3286 | } |
| 3287 | |
| 3288 | |
| 3289 | void MacroAssembler::Lzcntl(Register dst, Register src) { |
| 3290 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3291 | CpuFeatureScope scope(this, LZCNT); |
| 3292 | lzcntl(dst, src); |
| 3293 | return; |
| 3294 | } |
| 3295 | Label not_zero_src; |
| 3296 | bsrl(dst, src); |
| 3297 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3298 | Set(dst, 63); // 63^31 == 32 |
| 3299 | bind(¬_zero_src); |
| 3300 | xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x |
| 3301 | } |
| 3302 | |
| 3303 | |
| 3304 | void MacroAssembler::Lzcntl(Register dst, const Operand& src) { |
| 3305 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3306 | CpuFeatureScope scope(this, LZCNT); |
| 3307 | lzcntl(dst, src); |
| 3308 | return; |
| 3309 | } |
| 3310 | Label not_zero_src; |
| 3311 | bsrl(dst, src); |
| 3312 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3313 | Set(dst, 63); // 63^31 == 32 |
| 3314 | bind(¬_zero_src); |
| 3315 | xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x |
| 3316 | } |
| 3317 | |
| 3318 | |
| 3319 | void MacroAssembler::Lzcntq(Register dst, Register src) { |
| 3320 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3321 | CpuFeatureScope scope(this, LZCNT); |
| 3322 | lzcntq(dst, src); |
| 3323 | return; |
| 3324 | } |
| 3325 | Label not_zero_src; |
| 3326 | bsrq(dst, src); |
| 3327 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3328 | Set(dst, 127); // 127^63 == 64 |
| 3329 | bind(¬_zero_src); |
| 3330 | xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x |
| 3331 | } |
| 3332 | |
| 3333 | |
| 3334 | void MacroAssembler::Lzcntq(Register dst, const Operand& src) { |
| 3335 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3336 | CpuFeatureScope scope(this, LZCNT); |
| 3337 | lzcntq(dst, src); |
| 3338 | return; |
| 3339 | } |
| 3340 | Label not_zero_src; |
| 3341 | bsrq(dst, src); |
| 3342 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3343 | Set(dst, 127); // 127^63 == 64 |
| 3344 | bind(¬_zero_src); |
| 3345 | xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x |
| 3346 | } |
| 3347 | |
| 3348 | |
| 3349 | void MacroAssembler::Tzcntq(Register dst, Register src) { |
| 3350 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3351 | CpuFeatureScope scope(this, BMI1); |
| 3352 | tzcntq(dst, src); |
| 3353 | return; |
| 3354 | } |
| 3355 | Label not_zero_src; |
| 3356 | bsfq(dst, src); |
| 3357 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3358 | // Define the result of tzcnt(0) separately, because bsf(0) is undefined. |
| 3359 | Set(dst, 64); |
| 3360 | bind(¬_zero_src); |
| 3361 | } |
| 3362 | |
| 3363 | |
| 3364 | void MacroAssembler::Tzcntq(Register dst, const Operand& src) { |
| 3365 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3366 | CpuFeatureScope scope(this, BMI1); |
| 3367 | tzcntq(dst, src); |
| 3368 | return; |
| 3369 | } |
| 3370 | Label not_zero_src; |
| 3371 | bsfq(dst, src); |
| 3372 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3373 | // Define the result of tzcnt(0) separately, because bsf(0) is undefined. |
| 3374 | Set(dst, 64); |
| 3375 | bind(¬_zero_src); |
| 3376 | } |
| 3377 | |
| 3378 | |
| 3379 | void MacroAssembler::Tzcntl(Register dst, Register src) { |
| 3380 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3381 | CpuFeatureScope scope(this, BMI1); |
| 3382 | tzcntl(dst, src); |
| 3383 | return; |
| 3384 | } |
| 3385 | Label not_zero_src; |
| 3386 | bsfl(dst, src); |
| 3387 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3388 | Set(dst, 32); // The result of tzcnt is 32 if src = 0. |
| 3389 | bind(¬_zero_src); |
| 3390 | } |
| 3391 | |
| 3392 | |
| 3393 | void MacroAssembler::Tzcntl(Register dst, const Operand& src) { |
| 3394 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3395 | CpuFeatureScope scope(this, BMI1); |
| 3396 | tzcntl(dst, src); |
| 3397 | return; |
| 3398 | } |
| 3399 | Label not_zero_src; |
| 3400 | bsfl(dst, src); |
| 3401 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3402 | Set(dst, 32); // The result of tzcnt is 32 if src = 0. |
| 3403 | bind(¬_zero_src); |
| 3404 | } |
| 3405 | |
| 3406 | |
| 3407 | void MacroAssembler::Popcntl(Register dst, Register src) { |
| 3408 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3409 | CpuFeatureScope scope(this, POPCNT); |
| 3410 | popcntl(dst, src); |
| 3411 | return; |
| 3412 | } |
| 3413 | UNREACHABLE(); |
| 3414 | } |
| 3415 | |
| 3416 | |
| 3417 | void MacroAssembler::Popcntl(Register dst, const Operand& src) { |
| 3418 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3419 | CpuFeatureScope scope(this, POPCNT); |
| 3420 | popcntl(dst, src); |
| 3421 | return; |
| 3422 | } |
| 3423 | UNREACHABLE(); |
| 3424 | } |
| 3425 | |
| 3426 | |
| 3427 | void MacroAssembler::Popcntq(Register dst, Register src) { |
| 3428 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3429 | CpuFeatureScope scope(this, POPCNT); |
| 3430 | popcntq(dst, src); |
| 3431 | return; |
| 3432 | } |
| 3433 | UNREACHABLE(); |
| 3434 | } |
| 3435 | |
| 3436 | |
| 3437 | void MacroAssembler::Popcntq(Register dst, const Operand& src) { |
| 3438 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3439 | CpuFeatureScope scope(this, POPCNT); |
| 3440 | popcntq(dst, src); |
| 3441 | return; |
| 3442 | } |
| 3443 | UNREACHABLE(); |
| 3444 | } |
| 3445 | |
| 3446 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3447 | void MacroAssembler::Pushad() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3448 | Push(rax); |
| 3449 | Push(rcx); |
| 3450 | Push(rdx); |
| 3451 | Push(rbx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3452 | // Not pushing rsp or rbp. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3453 | Push(rsi); |
| 3454 | Push(rdi); |
| 3455 | Push(r8); |
| 3456 | Push(r9); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3457 | // r10 is kScratchRegister. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3458 | Push(r11); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3459 | Push(r12); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3460 | // r13 is kRootRegister. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3461 | Push(r14); |
| 3462 | Push(r15); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3463 | STATIC_ASSERT(12 == kNumSafepointSavedRegisters); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3464 | // Use lea for symmetry with Popad. |
| 3465 | int sp_delta = |
| 3466 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3467 | leap(rsp, Operand(rsp, -sp_delta)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3468 | } |
| 3469 | |
| 3470 | |
| 3471 | void MacroAssembler::Popad() { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3472 | // Popad must not change the flags, so use lea instead of addq. |
| 3473 | int sp_delta = |
| 3474 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3475 | leap(rsp, Operand(rsp, sp_delta)); |
| 3476 | Pop(r15); |
| 3477 | Pop(r14); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3478 | Pop(r12); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3479 | Pop(r11); |
| 3480 | Pop(r9); |
| 3481 | Pop(r8); |
| 3482 | Pop(rdi); |
| 3483 | Pop(rsi); |
| 3484 | Pop(rbx); |
| 3485 | Pop(rdx); |
| 3486 | Pop(rcx); |
| 3487 | Pop(rax); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3488 | } |
| 3489 | |
| 3490 | |
| 3491 | void MacroAssembler::Dropad() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3492 | addp(rsp, Immediate(kNumSafepointRegisters * kPointerSize)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3493 | } |
| 3494 | |
| 3495 | |
| 3496 | // Order general registers are pushed by Pushad: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3497 | // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3498 | const int |
| 3499 | MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3500 | 0, |
| 3501 | 1, |
| 3502 | 2, |
| 3503 | 3, |
| 3504 | -1, |
| 3505 | -1, |
| 3506 | 4, |
| 3507 | 5, |
| 3508 | 6, |
| 3509 | 7, |
| 3510 | -1, |
| 3511 | 8, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3512 | 9, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3513 | -1, |
| 3514 | 10, |
| 3515 | 11 |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3516 | }; |
| 3517 | |
| 3518 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3519 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, |
| 3520 | const Immediate& imm) { |
| 3521 | movp(SafepointRegisterSlot(dst), imm); |
| 3522 | } |
| 3523 | |
| 3524 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3525 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3526 | movp(SafepointRegisterSlot(dst), src); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3527 | } |
| 3528 | |
| 3529 | |
| 3530 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3531 | movp(dst, SafepointRegisterSlot(src)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3532 | } |
| 3533 | |
| 3534 | |
| 3535 | Operand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 3536 | return Operand(rsp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 3537 | } |
| 3538 | |
| 3539 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3540 | void MacroAssembler::PushStackHandler() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3541 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3542 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3543 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3544 | |
| 3545 | // Link the current handler as the next handler. |
| 3546 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3547 | Push(ExternalOperand(handler_address)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3548 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3549 | // Set this new handler as the current one. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3550 | movp(ExternalOperand(handler_address), rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3551 | } |
| 3552 | |
| 3553 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3554 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3555 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
| 3556 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3557 | Pop(ExternalOperand(handler_address)); |
| 3558 | addp(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 3559 | } |
| 3560 | |
| 3561 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3562 | void MacroAssembler::Ret() { |
| 3563 | ret(0); |
| 3564 | } |
| 3565 | |
| 3566 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3567 | void MacroAssembler::Ret(int bytes_dropped, Register scratch) { |
| 3568 | if (is_uint16(bytes_dropped)) { |
| 3569 | ret(bytes_dropped); |
| 3570 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3571 | PopReturnAddressTo(scratch); |
| 3572 | addp(rsp, Immediate(bytes_dropped)); |
| 3573 | PushReturnAddressFrom(scratch); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3574 | ret(0); |
| 3575 | } |
| 3576 | } |
| 3577 | |
| 3578 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3579 | void MacroAssembler::FCmp() { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 3580 | fucomip(); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 3581 | fstp(0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3582 | } |
| 3583 | |
| 3584 | |
| 3585 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 3586 | InstanceType type, |
| 3587 | Register map) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3588 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3589 | CmpInstanceType(map, type); |
| 3590 | } |
| 3591 | |
| 3592 | |
| 3593 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 3594 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 3595 | Immediate(static_cast<int8_t>(type))); |
| 3596 | } |
| 3597 | |
| 3598 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3599 | void MacroAssembler::CheckFastElements(Register map, |
| 3600 | Label* fail, |
| 3601 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3602 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3603 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3604 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3605 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3606 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3607 | Immediate(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3608 | j(above, fail, distance); |
| 3609 | } |
| 3610 | |
| 3611 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3612 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 3613 | Label* fail, |
| 3614 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3615 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3616 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3617 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3618 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3619 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3620 | Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3621 | j(below_equal, fail, distance); |
| 3622 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3623 | Immediate(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3624 | j(above, fail, distance); |
| 3625 | } |
| 3626 | |
| 3627 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3628 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 3629 | Label* fail, |
| 3630 | Label::Distance distance) { |
| 3631 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3632 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3633 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3634 | Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3635 | j(above, fail, distance); |
| 3636 | } |
| 3637 | |
| 3638 | |
| 3639 | void MacroAssembler::StoreNumberToDoubleElements( |
| 3640 | Register maybe_number, |
| 3641 | Register elements, |
| 3642 | Register index, |
| 3643 | XMMRegister xmm_scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3644 | Label* fail, |
| 3645 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3646 | Label smi_value, done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3647 | |
| 3648 | JumpIfSmi(maybe_number, &smi_value, Label::kNear); |
| 3649 | |
| 3650 | CheckMap(maybe_number, |
| 3651 | isolate()->factory()->heap_number_map(), |
| 3652 | fail, |
| 3653 | DONT_DO_SMI_CHECK); |
| 3654 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3655 | // Double value, turn potential sNaN into qNaN. |
| 3656 | Move(xmm_scratch, 1.0); |
| 3657 | mulsd(xmm_scratch, FieldOperand(maybe_number, HeapNumber::kValueOffset)); |
| 3658 | jmp(&done, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3659 | |
| 3660 | bind(&smi_value); |
| 3661 | // Value is a smi. convert to a double and store. |
| 3662 | // Preserve original value. |
| 3663 | SmiToInteger32(kScratchRegister, maybe_number); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3664 | Cvtlsi2sd(xmm_scratch, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3665 | bind(&done); |
| 3666 | Movsd(FieldOperand(elements, index, times_8, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3667 | FixedDoubleArray::kHeaderSize - elements_offset), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3668 | xmm_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3669 | } |
| 3670 | |
| 3671 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3672 | void MacroAssembler::CompareMap(Register obj, Handle<Map> map) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3673 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3674 | } |
| 3675 | |
| 3676 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3677 | void MacroAssembler::CheckMap(Register obj, |
| 3678 | Handle<Map> map, |
| 3679 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3680 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3681 | if (smi_check_type == DO_SMI_CHECK) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3682 | JumpIfSmi(obj, fail); |
| 3683 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3684 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3685 | CompareMap(obj, map); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3686 | j(not_equal, fail); |
| 3687 | } |
| 3688 | |
| 3689 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3690 | void MacroAssembler::ClampUint8(Register reg) { |
| 3691 | Label done; |
| 3692 | testl(reg, Immediate(0xFFFFFF00)); |
| 3693 | j(zero, &done, Label::kNear); |
| 3694 | setcc(negative, reg); // 1 if negative, 0 if positive. |
| 3695 | decb(reg); // 0 if negative, 255 if positive. |
| 3696 | bind(&done); |
| 3697 | } |
| 3698 | |
| 3699 | |
| 3700 | void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg, |
| 3701 | XMMRegister temp_xmm_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3702 | Register result_reg) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3703 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3704 | Label conv_failure; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3705 | Xorpd(temp_xmm_reg, temp_xmm_reg); |
| 3706 | Cvtsd2si(result_reg, input_reg); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3707 | testl(result_reg, Immediate(0xFFFFFF00)); |
| 3708 | j(zero, &done, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3709 | cmpl(result_reg, Immediate(1)); |
| 3710 | j(overflow, &conv_failure, Label::kNear); |
| 3711 | movl(result_reg, Immediate(0)); |
| 3712 | setcc(sign, result_reg); |
| 3713 | subl(result_reg, Immediate(1)); |
| 3714 | andl(result_reg, Immediate(255)); |
| 3715 | jmp(&done, Label::kNear); |
| 3716 | bind(&conv_failure); |
| 3717 | Set(result_reg, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3718 | Ucomisd(input_reg, temp_xmm_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3719 | j(below, &done, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3720 | Set(result_reg, 255); |
| 3721 | bind(&done); |
| 3722 | } |
| 3723 | |
| 3724 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3725 | void MacroAssembler::LoadUint32(XMMRegister dst, |
| 3726 | Register src) { |
| 3727 | if (FLAG_debug_code) { |
| 3728 | cmpq(src, Immediate(0xffffffff)); |
| 3729 | Assert(below_equal, kInputGPRIsExpectedToHaveUpper32Cleared); |
| 3730 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3731 | Cvtqsi2sd(dst, src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3732 | } |
| 3733 | |
| 3734 | |
| 3735 | void MacroAssembler::SlowTruncateToI(Register result_reg, |
| 3736 | Register input_reg, |
| 3737 | int offset) { |
| 3738 | DoubleToIStub stub(isolate(), input_reg, result_reg, offset, true); |
| 3739 | call(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 3740 | } |
| 3741 | |
| 3742 | |
| 3743 | void MacroAssembler::TruncateHeapNumberToI(Register result_reg, |
| 3744 | Register input_reg) { |
| 3745 | Label done; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3746 | Movsd(kScratchDoubleReg, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 3747 | Cvttsd2siq(result_reg, kScratchDoubleReg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3748 | cmpq(result_reg, Immediate(1)); |
| 3749 | j(no_overflow, &done, Label::kNear); |
| 3750 | |
| 3751 | // Slow case. |
| 3752 | if (input_reg.is(result_reg)) { |
| 3753 | subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3754 | Movsd(MemOperand(rsp, 0), kScratchDoubleReg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3755 | SlowTruncateToI(result_reg, rsp, 0); |
| 3756 | addp(rsp, Immediate(kDoubleSize)); |
| 3757 | } else { |
| 3758 | SlowTruncateToI(result_reg, input_reg); |
| 3759 | } |
| 3760 | |
| 3761 | bind(&done); |
| 3762 | // Keep our invariant that the upper 32 bits are zero. |
| 3763 | movl(result_reg, result_reg); |
| 3764 | } |
| 3765 | |
| 3766 | |
| 3767 | void MacroAssembler::TruncateDoubleToI(Register result_reg, |
| 3768 | XMMRegister input_reg) { |
| 3769 | Label done; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3770 | Cvttsd2siq(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3771 | cmpq(result_reg, Immediate(1)); |
| 3772 | j(no_overflow, &done, Label::kNear); |
| 3773 | |
| 3774 | subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3775 | Movsd(MemOperand(rsp, 0), input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3776 | SlowTruncateToI(result_reg, rsp, 0); |
| 3777 | addp(rsp, Immediate(kDoubleSize)); |
| 3778 | |
| 3779 | bind(&done); |
| 3780 | // Keep our invariant that the upper 32 bits are zero. |
| 3781 | movl(result_reg, result_reg); |
| 3782 | } |
| 3783 | |
| 3784 | |
| 3785 | void MacroAssembler::DoubleToI(Register result_reg, XMMRegister input_reg, |
| 3786 | XMMRegister scratch, |
| 3787 | MinusZeroMode minus_zero_mode, |
| 3788 | Label* lost_precision, Label* is_nan, |
| 3789 | Label* minus_zero, Label::Distance dst) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3790 | Cvttsd2si(result_reg, input_reg); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 3791 | Cvtlsi2sd(kScratchDoubleReg, result_reg); |
| 3792 | Ucomisd(kScratchDoubleReg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3793 | j(not_equal, lost_precision, dst); |
| 3794 | j(parity_even, is_nan, dst); // NaN. |
| 3795 | if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { |
| 3796 | Label done; |
| 3797 | // The integer converted back is equal to the original. We |
| 3798 | // only have to test if we got -0 as an input. |
| 3799 | testl(result_reg, result_reg); |
| 3800 | j(not_zero, &done, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3801 | Movmskpd(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3802 | // Bit 0 contains the sign of the double in input_reg. |
| 3803 | // If input was positive, we are ok and return 0, otherwise |
| 3804 | // jump to minus_zero. |
| 3805 | andl(result_reg, Immediate(1)); |
| 3806 | j(not_zero, minus_zero, dst); |
| 3807 | bind(&done); |
| 3808 | } |
| 3809 | } |
| 3810 | |
| 3811 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3812 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 3813 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3814 | movp(descriptors, FieldOperand(map, Map::kDescriptorsOffset)); |
| 3815 | } |
| 3816 | |
| 3817 | |
| 3818 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 3819 | movl(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 3820 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 3821 | } |
| 3822 | |
| 3823 | |
| 3824 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 3825 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 3826 | movl(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 3827 | andl(dst, Immediate(Map::EnumLengthBits::kMask)); |
| 3828 | Integer32ToSmi(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3829 | } |
| 3830 | |
| 3831 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3832 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 3833 | int accessor_index, |
| 3834 | AccessorComponent accessor) { |
| 3835 | movp(dst, FieldOperand(holder, HeapObject::kMapOffset)); |
| 3836 | LoadInstanceDescriptors(dst, dst); |
| 3837 | movp(dst, FieldOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 3838 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 3839 | : AccessorPair::kSetterOffset; |
| 3840 | movp(dst, FieldOperand(dst, offset)); |
| 3841 | } |
| 3842 | |
| 3843 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3844 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 3845 | Register scratch2, Handle<WeakCell> cell, |
| 3846 | Handle<Code> success, |
| 3847 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3848 | Label fail; |
| 3849 | if (smi_check_type == DO_SMI_CHECK) { |
| 3850 | JumpIfSmi(obj, &fail); |
| 3851 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3852 | movq(scratch1, FieldOperand(obj, HeapObject::kMapOffset)); |
| 3853 | CmpWeakValue(scratch1, cell, scratch2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3854 | j(equal, success, RelocInfo::CODE_TARGET); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3855 | bind(&fail); |
| 3856 | } |
| 3857 | |
| 3858 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3859 | void MacroAssembler::AssertNumber(Register object) { |
| 3860 | if (emit_debug_code()) { |
| 3861 | Label ok; |
| 3862 | Condition is_smi = CheckSmi(object); |
| 3863 | j(is_smi, &ok, Label::kNear); |
| 3864 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
| 3865 | isolate()->factory()->heap_number_map()); |
| 3866 | Check(equal, kOperandIsNotANumber); |
| 3867 | bind(&ok); |
| 3868 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 3869 | } |
| 3870 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3871 | void MacroAssembler::AssertNotNumber(Register object) { |
| 3872 | if (emit_debug_code()) { |
| 3873 | Condition is_smi = CheckSmi(object); |
| 3874 | Check(NegateCondition(is_smi), kOperandIsANumber); |
| 3875 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
| 3876 | isolate()->factory()->heap_number_map()); |
| 3877 | Check(not_equal, kOperandIsANumber); |
| 3878 | } |
| 3879 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 3880 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3881 | void MacroAssembler::AssertNotSmi(Register object) { |
| 3882 | if (emit_debug_code()) { |
| 3883 | Condition is_smi = CheckSmi(object); |
| 3884 | Check(NegateCondition(is_smi), kOperandIsASmi); |
| 3885 | } |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 3886 | } |
| 3887 | |
| 3888 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3889 | void MacroAssembler::AssertSmi(Register object) { |
| 3890 | if (emit_debug_code()) { |
| 3891 | Condition is_smi = CheckSmi(object); |
| 3892 | Check(is_smi, kOperandIsNotASmi); |
| 3893 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3894 | } |
| 3895 | |
| 3896 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3897 | void MacroAssembler::AssertSmi(const Operand& object) { |
| 3898 | if (emit_debug_code()) { |
| 3899 | Condition is_smi = CheckSmi(object); |
| 3900 | Check(is_smi, kOperandIsNotASmi); |
| 3901 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3902 | } |
| 3903 | |
| 3904 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3905 | void MacroAssembler::AssertZeroExtended(Register int32_register) { |
| 3906 | if (emit_debug_code()) { |
| 3907 | DCHECK(!int32_register.is(kScratchRegister)); |
| 3908 | movq(kScratchRegister, V8_INT64_C(0x0000000100000000)); |
| 3909 | cmpq(kScratchRegister, int32_register); |
| 3910 | Check(above_equal, k32BitValueInRegisterIsNotZeroExtended); |
| 3911 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3912 | } |
| 3913 | |
| 3914 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3915 | void MacroAssembler::AssertString(Register object) { |
| 3916 | if (emit_debug_code()) { |
| 3917 | testb(object, Immediate(kSmiTagMask)); |
| 3918 | Check(not_equal, kOperandIsASmiAndNotAString); |
| 3919 | Push(object); |
| 3920 | movp(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 3921 | CmpInstanceType(object, FIRST_NONSTRING_TYPE); |
| 3922 | Pop(object); |
| 3923 | Check(below, kOperandIsNotAString); |
| 3924 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3925 | } |
| 3926 | |
| 3927 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3928 | void MacroAssembler::AssertName(Register object) { |
| 3929 | if (emit_debug_code()) { |
| 3930 | testb(object, Immediate(kSmiTagMask)); |
| 3931 | Check(not_equal, kOperandIsASmiAndNotAName); |
| 3932 | Push(object); |
| 3933 | movp(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 3934 | CmpInstanceType(object, LAST_NAME_TYPE); |
| 3935 | Pop(object); |
| 3936 | Check(below_equal, kOperandIsNotAName); |
| 3937 | } |
| 3938 | } |
| 3939 | |
| 3940 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3941 | void MacroAssembler::AssertFunction(Register object) { |
| 3942 | if (emit_debug_code()) { |
| 3943 | testb(object, Immediate(kSmiTagMask)); |
| 3944 | Check(not_equal, kOperandIsASmiAndNotAFunction); |
| 3945 | Push(object); |
| 3946 | CmpObjectType(object, JS_FUNCTION_TYPE, object); |
| 3947 | Pop(object); |
| 3948 | Check(equal, kOperandIsNotAFunction); |
| 3949 | } |
| 3950 | } |
| 3951 | |
| 3952 | |
| 3953 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 3954 | if (emit_debug_code()) { |
| 3955 | testb(object, Immediate(kSmiTagMask)); |
| 3956 | Check(not_equal, kOperandIsASmiAndNotABoundFunction); |
| 3957 | Push(object); |
| 3958 | CmpObjectType(object, JS_BOUND_FUNCTION_TYPE, object); |
| 3959 | Pop(object); |
| 3960 | Check(equal, kOperandIsNotABoundFunction); |
| 3961 | } |
| 3962 | } |
| 3963 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3964 | void MacroAssembler::AssertGeneratorObject(Register object) { |
| 3965 | if (emit_debug_code()) { |
| 3966 | testb(object, Immediate(kSmiTagMask)); |
| 3967 | Check(not_equal, kOperandIsASmiAndNotAGeneratorObject); |
| 3968 | Push(object); |
| 3969 | CmpObjectType(object, JS_GENERATOR_OBJECT_TYPE, object); |
| 3970 | Pop(object); |
| 3971 | Check(equal, kOperandIsNotAGeneratorObject); |
| 3972 | } |
| 3973 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3974 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3975 | void MacroAssembler::AssertReceiver(Register object) { |
| 3976 | if (emit_debug_code()) { |
| 3977 | testb(object, Immediate(kSmiTagMask)); |
| 3978 | Check(not_equal, kOperandIsASmiAndNotAReceiver); |
| 3979 | Push(object); |
| 3980 | STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE); |
| 3981 | CmpObjectType(object, FIRST_JS_RECEIVER_TYPE, object); |
| 3982 | Pop(object); |
| 3983 | Check(above_equal, kOperandIsNotAReceiver); |
| 3984 | } |
| 3985 | } |
| 3986 | |
| 3987 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3988 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) { |
| 3989 | if (emit_debug_code()) { |
| 3990 | Label done_checking; |
| 3991 | AssertNotSmi(object); |
| 3992 | Cmp(object, isolate()->factory()->undefined_value()); |
| 3993 | j(equal, &done_checking); |
| 3994 | Cmp(FieldOperand(object, 0), isolate()->factory()->allocation_site_map()); |
| 3995 | Assert(equal, kExpectedUndefinedOrCell); |
| 3996 | bind(&done_checking); |
| 3997 | } |
| 3998 | } |
| 3999 | |
| 4000 | |
| 4001 | void MacroAssembler::AssertRootValue(Register src, |
| 4002 | Heap::RootListIndex root_value_index, |
| 4003 | BailoutReason reason) { |
| 4004 | if (emit_debug_code()) { |
| 4005 | DCHECK(!src.is(kScratchRegister)); |
| 4006 | LoadRoot(kScratchRegister, root_value_index); |
| 4007 | cmpp(src, kScratchRegister); |
| 4008 | Check(equal, reason); |
| 4009 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 4010 | } |
| 4011 | |
| 4012 | |
| 4013 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 4014 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 4015 | Register map, |
| 4016 | Register instance_type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4017 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 4018 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4019 | STATIC_ASSERT(kNotStringTag != 0); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 4020 | testb(instance_type, Immediate(kIsNotStringMask)); |
| 4021 | return zero; |
| 4022 | } |
| 4023 | |
| 4024 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4025 | Condition MacroAssembler::IsObjectNameType(Register heap_object, |
| 4026 | Register map, |
| 4027 | Register instance_type) { |
| 4028 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 4029 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 4030 | cmpb(instance_type, Immediate(static_cast<uint8_t>(LAST_NAME_TYPE))); |
| 4031 | return below_equal; |
| 4032 | } |
| 4033 | |
| 4034 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4035 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 4036 | Register temp) { |
| 4037 | Label done, loop; |
| 4038 | movp(result, FieldOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 4039 | bind(&loop); |
| 4040 | JumpIfSmi(result, &done, Label::kNear); |
| 4041 | CmpObjectType(result, MAP_TYPE, temp); |
| 4042 | j(not_equal, &done, Label::kNear); |
| 4043 | movp(result, FieldOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 4044 | jmp(&loop); |
| 4045 | bind(&done); |
| 4046 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4047 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4048 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4049 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 4050 | Label* miss) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4051 | // Get the prototype or initial map from the function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4052 | movp(result, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4053 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4054 | |
| 4055 | // If the prototype or initial map is the hole, don't return it and |
| 4056 | // simply miss the cache instead. This will allow us to allocate a |
| 4057 | // prototype object on-demand in the runtime system. |
| 4058 | CompareRoot(result, Heap::kTheHoleValueRootIndex); |
| 4059 | j(equal, miss); |
| 4060 | |
| 4061 | // If the function does not have an initial map, we're done. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4062 | Label done; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4063 | CmpObjectType(result, MAP_TYPE, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4064 | j(not_equal, &done, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4065 | |
| 4066 | // Get the prototype from the initial map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4067 | movp(result, FieldOperand(result, Map::kPrototypeOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4068 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4069 | // All done. |
| 4070 | bind(&done); |
| 4071 | } |
| 4072 | |
| 4073 | |
| 4074 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 4075 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4076 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 4077 | movl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4078 | } |
| 4079 | } |
| 4080 | |
| 4081 | |
| 4082 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4083 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4084 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4085 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4086 | if (value == 1) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4087 | incl(counter_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4088 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4089 | addl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4090 | } |
| 4091 | } |
| 4092 | } |
| 4093 | |
| 4094 | |
| 4095 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4096 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4097 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4098 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4099 | if (value == 1) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4100 | decl(counter_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4101 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4102 | subl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4103 | } |
| 4104 | } |
| 4105 | } |
| 4106 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4107 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 4108 | void MacroAssembler::DebugBreak() { |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 4109 | Set(rax, 0); // No arguments. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4110 | LoadAddress(rbx, |
| 4111 | ExternalReference(Runtime::kHandleDebuggerStatement, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4112 | CEntryStub ces(isolate(), 1); |
| 4113 | DCHECK(AllowThisStubCall(&ces)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4114 | Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4115 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4116 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4117 | void MacroAssembler::PrepareForTailCall(const ParameterCount& callee_args_count, |
| 4118 | Register caller_args_count_reg, |
| 4119 | Register scratch0, Register scratch1, |
| 4120 | ReturnAddressState ra_state) { |
| 4121 | #if DEBUG |
| 4122 | if (callee_args_count.is_reg()) { |
| 4123 | DCHECK(!AreAliased(callee_args_count.reg(), caller_args_count_reg, scratch0, |
| 4124 | scratch1)); |
| 4125 | } else { |
| 4126 | DCHECK(!AreAliased(caller_args_count_reg, scratch0, scratch1)); |
| 4127 | } |
| 4128 | #endif |
| 4129 | |
| 4130 | // Calculate the destination address where we will put the return address |
| 4131 | // after we drop current frame. |
| 4132 | Register new_sp_reg = scratch0; |
| 4133 | if (callee_args_count.is_reg()) { |
| 4134 | subp(caller_args_count_reg, callee_args_count.reg()); |
| 4135 | leap(new_sp_reg, Operand(rbp, caller_args_count_reg, times_pointer_size, |
| 4136 | StandardFrameConstants::kCallerPCOffset)); |
| 4137 | } else { |
| 4138 | leap(new_sp_reg, Operand(rbp, caller_args_count_reg, times_pointer_size, |
| 4139 | StandardFrameConstants::kCallerPCOffset - |
| 4140 | callee_args_count.immediate() * kPointerSize)); |
| 4141 | } |
| 4142 | |
| 4143 | if (FLAG_debug_code) { |
| 4144 | cmpp(rsp, new_sp_reg); |
| 4145 | Check(below, kStackAccessBelowStackPointer); |
| 4146 | } |
| 4147 | |
| 4148 | // Copy return address from caller's frame to current frame's return address |
| 4149 | // to avoid its trashing and let the following loop copy it to the right |
| 4150 | // place. |
| 4151 | Register tmp_reg = scratch1; |
| 4152 | if (ra_state == ReturnAddressState::kOnStack) { |
| 4153 | movp(tmp_reg, Operand(rbp, StandardFrameConstants::kCallerPCOffset)); |
| 4154 | movp(Operand(rsp, 0), tmp_reg); |
| 4155 | } else { |
| 4156 | DCHECK(ReturnAddressState::kNotOnStack == ra_state); |
| 4157 | Push(Operand(rbp, StandardFrameConstants::kCallerPCOffset)); |
| 4158 | } |
| 4159 | |
| 4160 | // Restore caller's frame pointer now as it could be overwritten by |
| 4161 | // the copying loop. |
| 4162 | movp(rbp, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); |
| 4163 | |
| 4164 | // +2 here is to copy both receiver and return address. |
| 4165 | Register count_reg = caller_args_count_reg; |
| 4166 | if (callee_args_count.is_reg()) { |
| 4167 | leap(count_reg, Operand(callee_args_count.reg(), 2)); |
| 4168 | } else { |
| 4169 | movp(count_reg, Immediate(callee_args_count.immediate() + 2)); |
| 4170 | // TODO(ishell): Unroll copying loop for small immediate values. |
| 4171 | } |
| 4172 | |
| 4173 | // Now copy callee arguments to the caller frame going backwards to avoid |
| 4174 | // callee arguments corruption (source and destination areas could overlap). |
| 4175 | Label loop, entry; |
| 4176 | jmp(&entry, Label::kNear); |
| 4177 | bind(&loop); |
| 4178 | decp(count_reg); |
| 4179 | movp(tmp_reg, Operand(rsp, count_reg, times_pointer_size, 0)); |
| 4180 | movp(Operand(new_sp_reg, count_reg, times_pointer_size, 0), tmp_reg); |
| 4181 | bind(&entry); |
| 4182 | cmpp(count_reg, Immediate(0)); |
| 4183 | j(not_equal, &loop, Label::kNear); |
| 4184 | |
| 4185 | // Leave current frame. |
| 4186 | movp(rsp, new_sp_reg); |
| 4187 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4188 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4189 | void MacroAssembler::InvokeFunction(Register function, |
| 4190 | Register new_target, |
| 4191 | const ParameterCount& actual, |
| 4192 | InvokeFlag flag, |
| 4193 | const CallWrapper& call_wrapper) { |
| 4194 | movp(rbx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 4195 | LoadSharedFunctionInfoSpecialField( |
| 4196 | rbx, rbx, SharedFunctionInfo::kFormalParameterCountOffset); |
| 4197 | |
| 4198 | ParameterCount expected(rbx); |
| 4199 | InvokeFunction(function, new_target, expected, actual, flag, call_wrapper); |
| 4200 | } |
| 4201 | |
| 4202 | |
| 4203 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 4204 | const ParameterCount& expected, |
| 4205 | const ParameterCount& actual, |
| 4206 | InvokeFlag flag, |
| 4207 | const CallWrapper& call_wrapper) { |
| 4208 | Move(rdi, function); |
| 4209 | InvokeFunction(rdi, no_reg, expected, actual, flag, call_wrapper); |
| 4210 | } |
| 4211 | |
| 4212 | |
| 4213 | void MacroAssembler::InvokeFunction(Register function, |
| 4214 | Register new_target, |
| 4215 | const ParameterCount& expected, |
| 4216 | const ParameterCount& actual, |
| 4217 | InvokeFlag flag, |
| 4218 | const CallWrapper& call_wrapper) { |
| 4219 | DCHECK(function.is(rdi)); |
| 4220 | movp(rsi, FieldOperand(function, JSFunction::kContextOffset)); |
| 4221 | InvokeFunctionCode(rdi, new_target, expected, actual, flag, call_wrapper); |
| 4222 | } |
| 4223 | |
| 4224 | |
| 4225 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 4226 | const ParameterCount& expected, |
| 4227 | const ParameterCount& actual, |
| 4228 | InvokeFlag flag, |
| 4229 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4230 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4231 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4232 | DCHECK(function.is(rdi)); |
| 4233 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(rdx)); |
| 4234 | |
| 4235 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 4236 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 4237 | } |
| 4238 | |
| 4239 | // Clear the new.target register if not given. |
| 4240 | if (!new_target.is_valid()) { |
| 4241 | LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
| 4242 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4243 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4244 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4245 | bool definitely_mismatches = false; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4246 | InvokePrologue(expected, |
| 4247 | actual, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4248 | &done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4249 | &definitely_mismatches, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4250 | flag, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4251 | Label::kNear, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4252 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4253 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4254 | // We call indirectly through the code field in the function to |
| 4255 | // allow recompilation to take effect without changing any of the |
| 4256 | // call sites. |
| 4257 | Operand code = FieldOperand(function, JSFunction::kCodeEntryOffset); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4258 | if (flag == CALL_FUNCTION) { |
| 4259 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4260 | call(code); |
| 4261 | call_wrapper.AfterCall(); |
| 4262 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4263 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4264 | jmp(code); |
| 4265 | } |
| 4266 | bind(&done); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4267 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4268 | } |
| 4269 | |
| 4270 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4271 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 4272 | const ParameterCount& actual, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4273 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4274 | bool* definitely_mismatches, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4275 | InvokeFlag flag, |
| 4276 | Label::Distance near_jump, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4277 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4278 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4279 | *definitely_mismatches = false; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4280 | Label invoke; |
| 4281 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4282 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4283 | Set(rax, actual.immediate()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4284 | if (expected.immediate() == actual.immediate()) { |
| 4285 | definitely_matches = true; |
| 4286 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4287 | if (expected.immediate() == |
| 4288 | SharedFunctionInfo::kDontAdaptArgumentsSentinel) { |
| 4289 | // Don't worry about adapting arguments for built-ins that |
| 4290 | // don't want that done. Skip adaption code by making it look |
| 4291 | // like we have a match between expected and actual number of |
| 4292 | // arguments. |
| 4293 | definitely_matches = true; |
| 4294 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4295 | *definitely_mismatches = true; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4296 | Set(rbx, expected.immediate()); |
| 4297 | } |
| 4298 | } |
| 4299 | } else { |
| 4300 | if (actual.is_immediate()) { |
| 4301 | // Expected is in register, actual is immediate. This is the |
| 4302 | // case when we invoke function values without going through the |
| 4303 | // IC mechanism. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4304 | Set(rax, actual.immediate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4305 | cmpp(expected.reg(), Immediate(actual.immediate())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4306 | j(equal, &invoke, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4307 | DCHECK(expected.reg().is(rbx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4308 | } else if (!expected.reg().is(actual.reg())) { |
| 4309 | // Both expected and actual are in (different) registers. This |
| 4310 | // is the case when we invoke functions using call and apply. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4311 | cmpp(expected.reg(), actual.reg()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4312 | j(equal, &invoke, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4313 | DCHECK(actual.reg().is(rax)); |
| 4314 | DCHECK(expected.reg().is(rbx)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4315 | } else { |
| 4316 | Move(rax, actual.reg()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4317 | } |
| 4318 | } |
| 4319 | |
| 4320 | if (!definitely_matches) { |
| 4321 | Handle<Code> adaptor = isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4322 | if (flag == CALL_FUNCTION) { |
| 4323 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4324 | Call(adaptor, RelocInfo::CODE_TARGET); |
| 4325 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4326 | if (!*definitely_mismatches) { |
| 4327 | jmp(done, near_jump); |
| 4328 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4329 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4330 | Jump(adaptor, RelocInfo::CODE_TARGET); |
| 4331 | } |
| 4332 | bind(&invoke); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4333 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 4334 | } |
| 4335 | |
| 4336 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4337 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 4338 | const ParameterCount& expected, |
| 4339 | const ParameterCount& actual) { |
| 4340 | Label skip_flooding; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 4341 | ExternalReference last_step_action = |
| 4342 | ExternalReference::debug_last_step_action_address(isolate()); |
| 4343 | Operand last_step_action_operand = ExternalOperand(last_step_action); |
| 4344 | STATIC_ASSERT(StepFrame > StepIn); |
| 4345 | cmpb(last_step_action_operand, Immediate(StepIn)); |
| 4346 | j(less, &skip_flooding); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4347 | { |
| 4348 | FrameScope frame(this, |
| 4349 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 4350 | if (expected.is_reg()) { |
| 4351 | Integer32ToSmi(expected.reg(), expected.reg()); |
| 4352 | Push(expected.reg()); |
| 4353 | } |
| 4354 | if (actual.is_reg()) { |
| 4355 | Integer32ToSmi(actual.reg(), actual.reg()); |
| 4356 | Push(actual.reg()); |
| 4357 | } |
| 4358 | if (new_target.is_valid()) { |
| 4359 | Push(new_target); |
| 4360 | } |
| 4361 | Push(fun); |
| 4362 | Push(fun); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4363 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4364 | Pop(fun); |
| 4365 | if (new_target.is_valid()) { |
| 4366 | Pop(new_target); |
| 4367 | } |
| 4368 | if (actual.is_reg()) { |
| 4369 | Pop(actual.reg()); |
| 4370 | SmiToInteger64(actual.reg(), actual.reg()); |
| 4371 | } |
| 4372 | if (expected.is_reg()) { |
| 4373 | Pop(expected.reg()); |
| 4374 | SmiToInteger64(expected.reg(), expected.reg()); |
| 4375 | } |
| 4376 | } |
| 4377 | bind(&skip_flooding); |
| 4378 | } |
| 4379 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4380 | void MacroAssembler::StubPrologue(StackFrame::Type type) { |
| 4381 | pushq(rbp); // Caller's frame pointer. |
| 4382 | movp(rbp, rsp); |
| 4383 | Push(Smi::FromInt(type)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4384 | } |
| 4385 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4386 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 4387 | PredictableCodeSizeScope predictible_code_size_scope(this, |
| 4388 | kNoCodeAgeSequenceLength); |
| 4389 | if (code_pre_aging) { |
| 4390 | // Pre-age the code. |
| 4391 | Call(isolate()->builtins()->MarkCodeAsExecutedOnce(), |
| 4392 | RelocInfo::CODE_AGE_SEQUENCE); |
| 4393 | Nop(kNoCodeAgeSequenceLength - Assembler::kShortCallInstructionLength); |
| 4394 | } else { |
| 4395 | pushq(rbp); // Caller's frame pointer. |
| 4396 | movp(rbp, rsp); |
| 4397 | Push(rsi); // Callee's context. |
| 4398 | Push(rdi); // Callee's JS function. |
| 4399 | } |
| 4400 | } |
| 4401 | |
| 4402 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4403 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 4404 | movp(vector, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 4405 | movp(vector, FieldOperand(vector, JSFunction::kLiteralsOffset)); |
| 4406 | movp(vector, FieldOperand(vector, LiteralsArray::kFeedbackVectorOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4407 | } |
| 4408 | |
| 4409 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4410 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 4411 | bool load_constant_pool_pointer_reg) { |
| 4412 | // Out-of-line constant pool not implemented on x64. |
| 4413 | UNREACHABLE(); |
| 4414 | } |
| 4415 | |
| 4416 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4417 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4418 | pushq(rbp); |
| 4419 | movp(rbp, rsp); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4420 | Push(Smi::FromInt(type)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4421 | if (type == StackFrame::INTERNAL) { |
| 4422 | Move(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 4423 | Push(kScratchRegister); |
| 4424 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4425 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4426 | Move(kScratchRegister, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4427 | isolate()->factory()->undefined_value(), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4428 | RelocInfo::EMBEDDED_OBJECT); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4429 | cmpp(Operand(rsp, 0), kScratchRegister); |
| 4430 | Check(not_equal, kCodeObjectNotProperlyPatched); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4431 | } |
| 4432 | } |
| 4433 | |
| 4434 | |
| 4435 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4436 | if (emit_debug_code()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4437 | Move(kScratchRegister, Smi::FromInt(type)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4438 | cmpp(Operand(rbp, CommonFrameConstants::kContextOrFrameTypeOffset), |
| 4439 | kScratchRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4440 | Check(equal, kStackFrameTypesMustMatch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4441 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4442 | movp(rsp, rbp); |
| 4443 | popq(rbp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4444 | } |
| 4445 | |
| 4446 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4447 | void MacroAssembler::EnterExitFramePrologue(bool save_rax) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4448 | // Set up the frame structure on the stack. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4449 | // All constants are relative to the frame pointer of the exit frame. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4450 | DCHECK_EQ(kFPOnStackSize + kPCOnStackSize, |
| 4451 | ExitFrameConstants::kCallerSPDisplacement); |
| 4452 | DCHECK_EQ(kFPOnStackSize, ExitFrameConstants::kCallerPCOffset); |
| 4453 | DCHECK_EQ(0 * kPointerSize, ExitFrameConstants::kCallerFPOffset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4454 | pushq(rbp); |
| 4455 | movp(rbp, rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4456 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4457 | // Reserve room for entry stack pointer and push the code object. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4458 | Push(Smi::FromInt(StackFrame::EXIT)); |
| 4459 | DCHECK_EQ(-2 * kPointerSize, ExitFrameConstants::kSPOffset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4460 | Push(Immediate(0)); // Saved entry sp, patched before call. |
| 4461 | Move(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 4462 | Push(kScratchRegister); // Accessed from EditFrame::code_slot. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4463 | |
| 4464 | // Save the frame pointer and the context in top. |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4465 | if (save_rax) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4466 | movp(r14, rax); // Backup rax in callee-save register. |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4467 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4468 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4469 | Store(ExternalReference(Isolate::kCEntryFPAddress, isolate()), rbp); |
| 4470 | Store(ExternalReference(Isolate::kContextAddress, isolate()), rsi); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4471 | Store(ExternalReference(Isolate::kCFunctionAddress, isolate()), rbx); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4472 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4473 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4474 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4475 | void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, |
| 4476 | bool save_doubles) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4477 | #ifdef _WIN64 |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4478 | const int kShadowSpace = 4; |
| 4479 | arg_stack_space += kShadowSpace; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4480 | #endif |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4481 | // Optionally save all XMM registers. |
| 4482 | if (save_doubles) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4483 | int space = XMMRegister::kMaxNumRegisters * kDoubleSize + |
| 4484 | arg_stack_space * kRegisterSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4485 | subp(rsp, Immediate(space)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4486 | int offset = -ExitFrameConstants::kFixedFrameSizeFromFp; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 4487 | const RegisterConfiguration* config = RegisterConfiguration::Crankshaft(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4488 | for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { |
| 4489 | DoubleRegister reg = |
| 4490 | DoubleRegister::from_code(config->GetAllocatableDoubleCode(i)); |
| 4491 | Movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4492 | } |
| 4493 | } else if (arg_stack_space > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4494 | subp(rsp, Immediate(arg_stack_space * kRegisterSize)); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4495 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4496 | |
| 4497 | // Get the required frame alignment for the OS. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4498 | const int kFrameAlignment = base::OS::ActivationFrameAlignment(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4499 | if (kFrameAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4500 | DCHECK(base::bits::IsPowerOfTwo32(kFrameAlignment)); |
| 4501 | DCHECK(is_int8(kFrameAlignment)); |
| 4502 | andp(rsp, Immediate(-kFrameAlignment)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4503 | } |
| 4504 | |
| 4505 | // Patch the saved entry sp. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4506 | movp(Operand(rbp, ExitFrameConstants::kSPOffset), rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4507 | } |
| 4508 | |
| 4509 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4510 | void MacroAssembler::EnterExitFrame(int arg_stack_space, bool save_doubles) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4511 | EnterExitFramePrologue(true); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4512 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4513 | // Set up argv in callee-saved register r15. It is reused in LeaveExitFrame, |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4514 | // so it must be retained across the C-call. |
| 4515 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4516 | leap(r15, Operand(rbp, r14, times_pointer_size, offset)); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4517 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4518 | EnterExitFrameEpilogue(arg_stack_space, save_doubles); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4519 | } |
| 4520 | |
| 4521 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4522 | void MacroAssembler::EnterApiExitFrame(int arg_stack_space) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4523 | EnterExitFramePrologue(false); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4524 | EnterExitFrameEpilogue(arg_stack_space, false); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4525 | } |
| 4526 | |
| 4527 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4528 | void MacroAssembler::LeaveExitFrame(bool save_doubles, bool pop_arguments) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4529 | // Registers: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4530 | // r15 : argv |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4531 | if (save_doubles) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4532 | int offset = -ExitFrameConstants::kFixedFrameSizeFromFp; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame^] | 4533 | const RegisterConfiguration* config = RegisterConfiguration::Crankshaft(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4534 | for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { |
| 4535 | DoubleRegister reg = |
| 4536 | DoubleRegister::from_code(config->GetAllocatableDoubleCode(i)); |
| 4537 | Movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize))); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4538 | } |
| 4539 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4540 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4541 | if (pop_arguments) { |
| 4542 | // Get the return address from the stack and restore the frame pointer. |
| 4543 | movp(rcx, Operand(rbp, kFPOnStackSize)); |
| 4544 | movp(rbp, Operand(rbp, 0 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4545 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4546 | // Drop everything up to and including the arguments and the receiver |
| 4547 | // from the caller stack. |
| 4548 | leap(rsp, Operand(r15, 1 * kPointerSize)); |
| 4549 | |
| 4550 | PushReturnAddressFrom(rcx); |
| 4551 | } else { |
| 4552 | // Otherwise just leave the exit frame. |
| 4553 | leave(); |
| 4554 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4555 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4556 | LeaveExitFrameEpilogue(true); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4557 | } |
| 4558 | |
| 4559 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4560 | void MacroAssembler::LeaveApiExitFrame(bool restore_context) { |
| 4561 | movp(rsp, rbp); |
| 4562 | popq(rbp); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4563 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4564 | LeaveExitFrameEpilogue(restore_context); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4565 | } |
| 4566 | |
| 4567 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4568 | void MacroAssembler::LeaveExitFrameEpilogue(bool restore_context) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4569 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4570 | ExternalReference context_address(Isolate::kContextAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4571 | Operand context_operand = ExternalOperand(context_address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4572 | if (restore_context) { |
| 4573 | movp(rsi, context_operand); |
| 4574 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4575 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4576 | movp(context_operand, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4577 | #endif |
| 4578 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4579 | // Clear the top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4580 | ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4581 | isolate()); |
| 4582 | Operand c_entry_fp_operand = ExternalOperand(c_entry_fp_address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4583 | movp(c_entry_fp_operand, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4584 | } |
| 4585 | |
| 4586 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4587 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 4588 | Register scratch, |
| 4589 | Label* miss) { |
| 4590 | Label same_contexts; |
| 4591 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4592 | DCHECK(!holder_reg.is(scratch)); |
| 4593 | DCHECK(!scratch.is(kScratchRegister)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4594 | // Load current lexical context from the active StandardFrame, which |
| 4595 | // may require crawling past STUB frames. |
| 4596 | Label load_context; |
| 4597 | Label has_context; |
| 4598 | movp(scratch, rbp); |
| 4599 | bind(&load_context); |
| 4600 | DCHECK(SmiValuesAre32Bits()); |
| 4601 | // This is "JumpIfNotSmi" but without loading the value into a register. |
| 4602 | cmpl(MemOperand(scratch, CommonFrameConstants::kContextOrFrameTypeOffset), |
| 4603 | Immediate(0)); |
| 4604 | j(not_equal, &has_context); |
| 4605 | movp(scratch, MemOperand(scratch, CommonFrameConstants::kCallerFPOffset)); |
| 4606 | jmp(&load_context); |
| 4607 | bind(&has_context); |
| 4608 | movp(scratch, |
| 4609 | MemOperand(scratch, CommonFrameConstants::kContextOrFrameTypeOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4610 | |
| 4611 | // When generating debug code, make sure the lexical context is set. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4612 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4613 | cmpp(scratch, Immediate(0)); |
| 4614 | Check(not_equal, kWeShouldNotHaveAnEmptyLexicalContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4615 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4616 | // Load the native context of the current context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4617 | movp(scratch, ContextOperand(scratch, Context::NATIVE_CONTEXT_INDEX)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4618 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4619 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4620 | if (emit_debug_code()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4621 | Cmp(FieldOperand(scratch, HeapObject::kMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4622 | isolate()->factory()->native_context_map()); |
| 4623 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4624 | } |
| 4625 | |
| 4626 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4627 | cmpp(scratch, FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4628 | j(equal, &same_contexts); |
| 4629 | |
| 4630 | // Compare security tokens. |
| 4631 | // Check that the security token in the calling global object is |
| 4632 | // compatible with the security token in the receiving global |
| 4633 | // object. |
| 4634 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4635 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4636 | if (emit_debug_code()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4637 | // Preserve original value of holder_reg. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4638 | Push(holder_reg); |
| 4639 | movp(holder_reg, |
| 4640 | FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4641 | CompareRoot(holder_reg, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4642 | Check(not_equal, kJSGlobalProxyContextShouldNotBeNull); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4643 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4644 | // Read the first word and compare to native_context_map(), |
| 4645 | movp(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset)); |
| 4646 | CompareRoot(holder_reg, Heap::kNativeContextMapRootIndex); |
| 4647 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
| 4648 | Pop(holder_reg); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4649 | } |
| 4650 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4651 | movp(kScratchRegister, |
| 4652 | FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4653 | int token_offset = |
| 4654 | Context::kHeaderSize + Context::SECURITY_TOKEN_INDEX * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4655 | movp(scratch, FieldOperand(scratch, token_offset)); |
| 4656 | cmpp(scratch, FieldOperand(kScratchRegister, token_offset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4657 | j(not_equal, miss); |
| 4658 | |
| 4659 | bind(&same_contexts); |
| 4660 | } |
| 4661 | |
| 4662 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4663 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 4664 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 4665 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4666 | void MacroAssembler::GetNumberHash(Register r0, Register scratch) { |
| 4667 | // First of all we assign the hash seed to scratch. |
| 4668 | LoadRoot(scratch, Heap::kHashSeedRootIndex); |
| 4669 | SmiToInteger32(scratch, scratch); |
| 4670 | |
| 4671 | // Xor original key with a seed. |
| 4672 | xorl(r0, scratch); |
| 4673 | |
| 4674 | // Compute the hash code from the untagged key. This must be kept in sync |
| 4675 | // with ComputeIntegerHash in utils.h. |
| 4676 | // |
| 4677 | // hash = ~hash + (hash << 15); |
| 4678 | movl(scratch, r0); |
| 4679 | notl(r0); |
| 4680 | shll(scratch, Immediate(15)); |
| 4681 | addl(r0, scratch); |
| 4682 | // hash = hash ^ (hash >> 12); |
| 4683 | movl(scratch, r0); |
| 4684 | shrl(scratch, Immediate(12)); |
| 4685 | xorl(r0, scratch); |
| 4686 | // hash = hash + (hash << 2); |
| 4687 | leal(r0, Operand(r0, r0, times_4, 0)); |
| 4688 | // hash = hash ^ (hash >> 4); |
| 4689 | movl(scratch, r0); |
| 4690 | shrl(scratch, Immediate(4)); |
| 4691 | xorl(r0, scratch); |
| 4692 | // hash = hash * 2057; |
| 4693 | imull(r0, r0, Immediate(2057)); |
| 4694 | // hash = hash ^ (hash >> 16); |
| 4695 | movl(scratch, r0); |
| 4696 | shrl(scratch, Immediate(16)); |
| 4697 | xorl(r0, scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4698 | andl(r0, Immediate(0x3fffffff)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4699 | } |
| 4700 | |
| 4701 | |
| 4702 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4703 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 4704 | Register elements, |
| 4705 | Register key, |
| 4706 | Register r0, |
| 4707 | Register r1, |
| 4708 | Register r2, |
| 4709 | Register result) { |
| 4710 | // Register use: |
| 4711 | // |
| 4712 | // elements - holds the slow-case elements of the receiver on entry. |
| 4713 | // Unchanged unless 'result' is the same register. |
| 4714 | // |
| 4715 | // key - holds the smi key on entry. |
| 4716 | // Unchanged unless 'result' is the same register. |
| 4717 | // |
| 4718 | // Scratch registers: |
| 4719 | // |
| 4720 | // r0 - holds the untagged key on entry and holds the hash once computed. |
| 4721 | // |
| 4722 | // r1 - used to hold the capacity mask of the dictionary |
| 4723 | // |
| 4724 | // r2 - used for the index into the dictionary. |
| 4725 | // |
| 4726 | // result - holds the result on exit if the load succeeded. |
| 4727 | // Allowed to be the same as 'key' or 'result'. |
| 4728 | // Unchanged on bailout so 'key' or 'result' can be used |
| 4729 | // in further computation. |
| 4730 | |
| 4731 | Label done; |
| 4732 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4733 | GetNumberHash(r0, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4734 | |
| 4735 | // Compute capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4736 | SmiToInteger32(r1, FieldOperand(elements, |
| 4737 | SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4738 | decl(r1); |
| 4739 | |
| 4740 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4741 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4742 | // Use r2 for index calculations and keep the hash intact in r0. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4743 | movp(r2, r0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4744 | // Compute the masked index: (hash + i + i * i) & mask. |
| 4745 | if (i > 0) { |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4746 | addl(r2, Immediate(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4747 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4748 | andp(r2, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4749 | |
| 4750 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4751 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
| 4752 | leap(r2, Operand(r2, r2, times_2, 0)); // r2 = r2 * 3 |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4753 | |
| 4754 | // Check if the key matches. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4755 | cmpp(key, FieldOperand(elements, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4756 | r2, |
| 4757 | times_pointer_size, |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4758 | SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4759 | if (i != (kNumberDictionaryProbes - 1)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4760 | j(equal, &done); |
| 4761 | } else { |
| 4762 | j(not_equal, miss); |
| 4763 | } |
| 4764 | } |
| 4765 | |
| 4766 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4767 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4768 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4769 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4770 | DCHECK_EQ(DATA, 0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4771 | Test(FieldOperand(elements, r2, times_pointer_size, kDetailsOffset), |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4772 | Smi::FromInt(PropertyDetails::TypeField::kMask)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4773 | j(not_zero, miss); |
| 4774 | |
| 4775 | // Get the value at the masked, scaled index. |
| 4776 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4777 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4778 | movp(result, FieldOperand(elements, r2, times_pointer_size, kValueOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4779 | } |
| 4780 | |
| 4781 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4782 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4783 | Register scratch, |
| 4784 | AllocationFlags flags) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4785 | ExternalReference allocation_top = |
| 4786 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4787 | |
| 4788 | // Just return if allocation top is already known. |
| 4789 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
| 4790 | // No use of scratch if allocation top is provided. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4791 | DCHECK(!scratch.is_valid()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4792 | #ifdef DEBUG |
| 4793 | // Assert that result actually contains top on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4794 | Operand top_operand = ExternalOperand(allocation_top); |
| 4795 | cmpp(result, top_operand); |
| 4796 | Check(equal, kUnexpectedAllocationTop); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4797 | #endif |
| 4798 | return; |
| 4799 | } |
| 4800 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4801 | // Move address of new object to result. Use scratch register if available, |
| 4802 | // and keep address in scratch until call to UpdateAllocationTopHelper. |
| 4803 | if (scratch.is_valid()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4804 | LoadAddress(scratch, allocation_top); |
| 4805 | movp(result, Operand(scratch, 0)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4806 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4807 | Load(result, allocation_top); |
| 4808 | } |
| 4809 | } |
| 4810 | |
| 4811 | |
| 4812 | void MacroAssembler::MakeSureDoubleAlignedHelper(Register result, |
| 4813 | Register scratch, |
| 4814 | Label* gc_required, |
| 4815 | AllocationFlags flags) { |
| 4816 | if (kPointerSize == kDoubleSize) { |
| 4817 | if (FLAG_debug_code) { |
| 4818 | testl(result, Immediate(kDoubleAlignmentMask)); |
| 4819 | Check(zero, kAllocationIsNotDoubleAligned); |
| 4820 | } |
| 4821 | } else { |
| 4822 | // Align the next allocation. Storing the filler map without checking top |
| 4823 | // is safe in new-space because the limit of the heap is aligned there. |
| 4824 | DCHECK(kPointerSize * 2 == kDoubleSize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4825 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 4826 | // Make sure scratch is not clobbered by this function as it might be |
| 4827 | // used in UpdateAllocationTopHelper later. |
| 4828 | DCHECK(!scratch.is(kScratchRegister)); |
| 4829 | Label aligned; |
| 4830 | testl(result, Immediate(kDoubleAlignmentMask)); |
| 4831 | j(zero, &aligned, Label::kNear); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4832 | if (((flags & ALLOCATION_FOLDED) == 0) && ((flags & PRETENURE) != 0)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4833 | ExternalReference allocation_limit = |
| 4834 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4835 | cmpp(result, ExternalOperand(allocation_limit)); |
| 4836 | j(above_equal, gc_required); |
| 4837 | } |
| 4838 | LoadRoot(kScratchRegister, Heap::kOnePointerFillerMapRootIndex); |
| 4839 | movp(Operand(result, 0), kScratchRegister); |
| 4840 | addp(result, Immediate(kDoubleSize / 2)); |
| 4841 | bind(&aligned); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4842 | } |
| 4843 | } |
| 4844 | |
| 4845 | |
| 4846 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4847 | Register scratch, |
| 4848 | AllocationFlags flags) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4849 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4850 | testp(result_end, Immediate(kObjectAlignmentMask)); |
| 4851 | Check(zero, kUnalignedAllocationInNewSpace); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 4852 | } |
| 4853 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4854 | ExternalReference allocation_top = |
| 4855 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4856 | |
| 4857 | // Update new top. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4858 | if (scratch.is_valid()) { |
| 4859 | // Scratch already contains address of allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4860 | movp(Operand(scratch, 0), result_end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4861 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4862 | Store(allocation_top, result_end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4863 | } |
| 4864 | } |
| 4865 | |
| 4866 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4867 | void MacroAssembler::Allocate(int object_size, |
| 4868 | Register result, |
| 4869 | Register result_end, |
| 4870 | Register scratch, |
| 4871 | Label* gc_required, |
| 4872 | AllocationFlags flags) { |
| 4873 | DCHECK((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0); |
| 4874 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4875 | DCHECK((flags & ALLOCATION_FOLDED) == 0); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4876 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4877 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4878 | // Trash the registers to simulate an allocation failure. |
| 4879 | movl(result, Immediate(0x7091)); |
| 4880 | if (result_end.is_valid()) { |
| 4881 | movl(result_end, Immediate(0x7191)); |
| 4882 | } |
| 4883 | if (scratch.is_valid()) { |
| 4884 | movl(scratch, Immediate(0x7291)); |
| 4885 | } |
| 4886 | } |
| 4887 | jmp(gc_required); |
| 4888 | return; |
| 4889 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4890 | DCHECK(!result.is(result_end)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4891 | |
| 4892 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4893 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4894 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4895 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4896 | MakeSureDoubleAlignedHelper(result, scratch, gc_required, flags); |
| 4897 | } |
| 4898 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4899 | // Calculate new top and bail out if new space is exhausted. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4900 | ExternalReference allocation_limit = |
| 4901 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4902 | |
| 4903 | Register top_reg = result_end.is_valid() ? result_end : result; |
| 4904 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4905 | if (!top_reg.is(result)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4906 | movp(top_reg, result); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4907 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4908 | addp(top_reg, Immediate(object_size)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4909 | Operand limit_operand = ExternalOperand(allocation_limit); |
| 4910 | cmpp(top_reg, limit_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4911 | j(above, gc_required); |
| 4912 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4913 | if ((flags & ALLOCATION_FOLDING_DOMINATOR) == 0) { |
| 4914 | // The top pointer is not updated for allocation folding dominators. |
| 4915 | UpdateAllocationTopHelper(top_reg, scratch, flags); |
| 4916 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4917 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4918 | if (top_reg.is(result)) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4919 | subp(result, Immediate(object_size - kHeapObjectTag)); |
| 4920 | } else { |
| 4921 | // Tag the result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4922 | DCHECK(kHeapObjectTag == 1); |
| 4923 | incp(result); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4924 | } |
| 4925 | } |
| 4926 | |
| 4927 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4928 | void MacroAssembler::Allocate(int header_size, |
| 4929 | ScaleFactor element_size, |
| 4930 | Register element_count, |
| 4931 | Register result, |
| 4932 | Register result_end, |
| 4933 | Register scratch, |
| 4934 | Label* gc_required, |
| 4935 | AllocationFlags flags) { |
| 4936 | DCHECK((flags & SIZE_IN_WORDS) == 0); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4937 | DCHECK((flags & ALLOCATION_FOLDING_DOMINATOR) == 0); |
| 4938 | DCHECK((flags & ALLOCATION_FOLDED) == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4939 | leap(result_end, Operand(element_count, element_size, header_size)); |
| 4940 | Allocate(result_end, result, result_end, scratch, gc_required, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4941 | } |
| 4942 | |
| 4943 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4944 | void MacroAssembler::Allocate(Register object_size, |
| 4945 | Register result, |
| 4946 | Register result_end, |
| 4947 | Register scratch, |
| 4948 | Label* gc_required, |
| 4949 | AllocationFlags flags) { |
| 4950 | DCHECK((flags & SIZE_IN_WORDS) == 0); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4951 | DCHECK((flags & ALLOCATION_FOLDED) == 0); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4952 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4953 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4954 | // Trash the registers to simulate an allocation failure. |
| 4955 | movl(result, Immediate(0x7091)); |
| 4956 | movl(result_end, Immediate(0x7191)); |
| 4957 | if (scratch.is_valid()) { |
| 4958 | movl(scratch, Immediate(0x7291)); |
| 4959 | } |
| 4960 | // object_size is left unchanged by this function. |
| 4961 | } |
| 4962 | jmp(gc_required); |
| 4963 | return; |
| 4964 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4965 | DCHECK(!result.is(result_end)); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4966 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4967 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4968 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4969 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4970 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4971 | MakeSureDoubleAlignedHelper(result, scratch, gc_required, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4972 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4973 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4974 | ExternalReference allocation_limit = |
| 4975 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4976 | if (!object_size.is(result_end)) { |
| 4977 | movp(result_end, object_size); |
| 4978 | } |
| 4979 | addp(result_end, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4980 | Operand limit_operand = ExternalOperand(allocation_limit); |
| 4981 | cmpp(result_end, limit_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4982 | j(above, gc_required); |
| 4983 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4984 | if ((flags & ALLOCATION_FOLDING_DOMINATOR) == 0) { |
| 4985 | // The top pointer is not updated for allocation folding dominators. |
| 4986 | UpdateAllocationTopHelper(result_end, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4987 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4988 | |
| 4989 | // Tag the result. |
| 4990 | addp(result, Immediate(kHeapObjectTag)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4991 | } |
| 4992 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 4993 | void MacroAssembler::FastAllocate(int object_size, Register result, |
| 4994 | Register result_end, AllocationFlags flags) { |
| 4995 | DCHECK(!result.is(result_end)); |
| 4996 | // Load address of new object into result. |
| 4997 | LoadAllocationTopHelper(result, no_reg, flags); |
| 4998 | |
| 4999 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 5000 | MakeSureDoubleAlignedHelper(result, no_reg, NULL, flags); |
| 5001 | } |
| 5002 | |
| 5003 | leap(result_end, Operand(result, object_size)); |
| 5004 | |
| 5005 | UpdateAllocationTopHelper(result_end, no_reg, flags); |
| 5006 | |
| 5007 | addp(result, Immediate(kHeapObjectTag)); |
| 5008 | } |
| 5009 | |
| 5010 | void MacroAssembler::FastAllocate(Register object_size, Register result, |
| 5011 | Register result_end, AllocationFlags flags) { |
| 5012 | DCHECK(!result.is(result_end)); |
| 5013 | // Load address of new object into result. |
| 5014 | LoadAllocationTopHelper(result, no_reg, flags); |
| 5015 | |
| 5016 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 5017 | MakeSureDoubleAlignedHelper(result, no_reg, NULL, flags); |
| 5018 | } |
| 5019 | |
| 5020 | leap(result_end, Operand(result, object_size, times_1, 0)); |
| 5021 | |
| 5022 | UpdateAllocationTopHelper(result_end, no_reg, flags); |
| 5023 | |
| 5024 | addp(result, Immediate(kHeapObjectTag)); |
| 5025 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5026 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 5027 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 5028 | Register scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5029 | Label* gc_required, |
| 5030 | MutableMode mode) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 5031 | // Allocate heap number in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5032 | Allocate(HeapNumber::kSize, result, scratch, no_reg, gc_required, |
| 5033 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5034 | |
| 5035 | Heap::RootListIndex map_index = mode == MUTABLE |
| 5036 | ? Heap::kMutableHeapNumberMapRootIndex |
| 5037 | : Heap::kHeapNumberMapRootIndex; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 5038 | |
| 5039 | // Set the map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5040 | LoadRoot(kScratchRegister, map_index); |
| 5041 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 5042 | } |
| 5043 | |
| 5044 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5045 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 5046 | Register length, |
| 5047 | Register scratch1, |
| 5048 | Register scratch2, |
| 5049 | Register scratch3, |
| 5050 | Label* gc_required) { |
| 5051 | // Calculate the number of bytes needed for the characters in the string while |
| 5052 | // observing object alignment. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5053 | const int kHeaderAlignment = SeqTwoByteString::kHeaderSize & |
| 5054 | kObjectAlignmentMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5055 | DCHECK(kShortSize == 2); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5056 | // scratch1 = length * 2 + kObjectAlignmentMask. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5057 | leap(scratch1, Operand(length, length, times_1, kObjectAlignmentMask + |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5058 | kHeaderAlignment)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5059 | andp(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5060 | if (kHeaderAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5061 | subp(scratch1, Immediate(kHeaderAlignment)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5062 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5063 | |
| 5064 | // Allocate two byte string in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5065 | Allocate(SeqTwoByteString::kHeaderSize, times_1, scratch1, result, scratch2, |
| 5066 | scratch3, gc_required, NO_ALLOCATION_FLAGS); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5067 | |
| 5068 | // Set the map, length and hash field. |
| 5069 | LoadRoot(kScratchRegister, Heap::kStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5070 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5071 | Integer32ToSmi(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5072 | movp(FieldOperand(result, String::kLengthOffset), scratch1); |
| 5073 | movp(FieldOperand(result, String::kHashFieldOffset), |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5074 | Immediate(String::kEmptyHashField)); |
| 5075 | } |
| 5076 | |
| 5077 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5078 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 5079 | Register scratch1, Register scratch2, |
| 5080 | Register scratch3, |
| 5081 | Label* gc_required) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5082 | // Calculate the number of bytes needed for the characters in the string while |
| 5083 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5084 | const int kHeaderAlignment = SeqOneByteString::kHeaderSize & |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5085 | kObjectAlignmentMask; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5086 | movl(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5087 | DCHECK(kCharSize == 1); |
| 5088 | addp(scratch1, Immediate(kObjectAlignmentMask + kHeaderAlignment)); |
| 5089 | andp(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5090 | if (kHeaderAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5091 | subp(scratch1, Immediate(kHeaderAlignment)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5092 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5093 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5094 | // Allocate one-byte string in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5095 | Allocate(SeqOneByteString::kHeaderSize, times_1, scratch1, result, scratch2, |
| 5096 | scratch3, gc_required, NO_ALLOCATION_FLAGS); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5097 | |
| 5098 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5099 | LoadRoot(kScratchRegister, Heap::kOneByteStringMapRootIndex); |
| 5100 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5101 | Integer32ToSmi(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5102 | movp(FieldOperand(result, String::kLengthOffset), scratch1); |
| 5103 | movp(FieldOperand(result, String::kHashFieldOffset), |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5104 | Immediate(String::kEmptyHashField)); |
| 5105 | } |
| 5106 | |
| 5107 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5108 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5109 | Register scratch1, |
| 5110 | Register scratch2, |
| 5111 | Label* gc_required) { |
| 5112 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5113 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5114 | NO_ALLOCATION_FLAGS); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5115 | |
| 5116 | // Set the map. The other fields are left uninitialized. |
| 5117 | LoadRoot(kScratchRegister, Heap::kConsStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5118 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5119 | } |
| 5120 | |
| 5121 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5122 | void MacroAssembler::AllocateOneByteConsString(Register result, |
| 5123 | Register scratch1, |
| 5124 | Register scratch2, |
| 5125 | Label* gc_required) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5126 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 5127 | NO_ALLOCATION_FLAGS); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5128 | |
| 5129 | // Set the map. The other fields are left uninitialized. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5130 | LoadRoot(kScratchRegister, Heap::kConsOneByteStringMapRootIndex); |
| 5131 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5132 | } |
| 5133 | |
| 5134 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5135 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 5136 | Register scratch1, |
| 5137 | Register scratch2, |
| 5138 | Label* gc_required) { |
| 5139 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5140 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5141 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5142 | |
| 5143 | // Set the map. The other fields are left uninitialized. |
| 5144 | LoadRoot(kScratchRegister, Heap::kSlicedStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5145 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5146 | } |
| 5147 | |
| 5148 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5149 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 5150 | Register scratch1, |
| 5151 | Register scratch2, |
| 5152 | Label* gc_required) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5153 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5154 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5155 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5156 | |
| 5157 | // Set the map. The other fields are left uninitialized. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5158 | LoadRoot(kScratchRegister, Heap::kSlicedOneByteStringMapRootIndex); |
| 5159 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5160 | } |
| 5161 | |
| 5162 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5163 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 5164 | Register value, Register scratch, |
| 5165 | Label* gc_required) { |
| 5166 | DCHECK(!result.is(constructor)); |
| 5167 | DCHECK(!result.is(scratch)); |
| 5168 | DCHECK(!result.is(value)); |
| 5169 | |
| 5170 | // Allocate JSValue in new space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5171 | Allocate(JSValue::kSize, result, scratch, no_reg, gc_required, |
| 5172 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5173 | |
| 5174 | // Initialize the JSValue. |
| 5175 | LoadGlobalFunctionInitialMap(constructor, scratch); |
| 5176 | movp(FieldOperand(result, HeapObject::kMapOffset), scratch); |
| 5177 | LoadRoot(scratch, Heap::kEmptyFixedArrayRootIndex); |
| 5178 | movp(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 5179 | movp(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 5180 | movp(FieldOperand(result, JSValue::kValueOffset), value); |
| 5181 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
| 5182 | } |
| 5183 | |
| 5184 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5185 | // Copy memory, byte-by-byte, from source to destination. Not optimized for |
| 5186 | // long or aligned copies. The contents of scratch and length are destroyed. |
| 5187 | // Destination is incremented by length, source, length and scratch are |
| 5188 | // clobbered. |
| 5189 | // A simpler loop is faster on small copies, but slower on large ones. |
| 5190 | // The cld() instruction must have been emitted, to set the direction flag(), |
| 5191 | // before calling this function. |
| 5192 | void MacroAssembler::CopyBytes(Register destination, |
| 5193 | Register source, |
| 5194 | Register length, |
| 5195 | int min_length, |
| 5196 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5197 | DCHECK(min_length >= 0); |
| 5198 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5199 | cmpl(length, Immediate(min_length)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5200 | Assert(greater_equal, kInvalidMinLength); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5201 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5202 | Label short_loop, len8, len16, len24, done, short_string; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5203 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5204 | const int kLongStringLimit = 4 * kPointerSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5205 | if (min_length <= kLongStringLimit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5206 | cmpl(length, Immediate(kPointerSize)); |
| 5207 | j(below, &short_string, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5208 | } |
| 5209 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5210 | DCHECK(source.is(rsi)); |
| 5211 | DCHECK(destination.is(rdi)); |
| 5212 | DCHECK(length.is(rcx)); |
| 5213 | |
| 5214 | if (min_length <= kLongStringLimit) { |
| 5215 | cmpl(length, Immediate(2 * kPointerSize)); |
| 5216 | j(below_equal, &len8, Label::kNear); |
| 5217 | cmpl(length, Immediate(3 * kPointerSize)); |
| 5218 | j(below_equal, &len16, Label::kNear); |
| 5219 | cmpl(length, Immediate(4 * kPointerSize)); |
| 5220 | j(below_equal, &len24, Label::kNear); |
| 5221 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5222 | |
| 5223 | // Because source is 8-byte aligned in our uses of this function, |
| 5224 | // we keep source aligned for the rep movs operation by copying the odd bytes |
| 5225 | // at the end of the ranges. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5226 | movp(scratch, length); |
| 5227 | shrl(length, Immediate(kPointerSizeLog2)); |
| 5228 | repmovsp(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5229 | // Move remaining bytes of length. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5230 | andl(scratch, Immediate(kPointerSize - 1)); |
| 5231 | movp(length, Operand(source, scratch, times_1, -kPointerSize)); |
| 5232 | movp(Operand(destination, scratch, times_1, -kPointerSize), length); |
| 5233 | addp(destination, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5234 | |
| 5235 | if (min_length <= kLongStringLimit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5236 | jmp(&done, Label::kNear); |
| 5237 | bind(&len24); |
| 5238 | movp(scratch, Operand(source, 2 * kPointerSize)); |
| 5239 | movp(Operand(destination, 2 * kPointerSize), scratch); |
| 5240 | bind(&len16); |
| 5241 | movp(scratch, Operand(source, kPointerSize)); |
| 5242 | movp(Operand(destination, kPointerSize), scratch); |
| 5243 | bind(&len8); |
| 5244 | movp(scratch, Operand(source, 0)); |
| 5245 | movp(Operand(destination, 0), scratch); |
| 5246 | // Move remaining bytes of length. |
| 5247 | movp(scratch, Operand(source, length, times_1, -kPointerSize)); |
| 5248 | movp(Operand(destination, length, times_1, -kPointerSize), scratch); |
| 5249 | addp(destination, length); |
| 5250 | jmp(&done, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5251 | |
| 5252 | bind(&short_string); |
| 5253 | if (min_length == 0) { |
| 5254 | testl(length, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5255 | j(zero, &done, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5256 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5257 | |
| 5258 | bind(&short_loop); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5259 | movb(scratch, Operand(source, 0)); |
| 5260 | movb(Operand(destination, 0), scratch); |
| 5261 | incp(source); |
| 5262 | incp(destination); |
| 5263 | decl(length); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5264 | j(not_zero, &short_loop, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5265 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5266 | |
| 5267 | bind(&done); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5268 | } |
| 5269 | |
| 5270 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5271 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 5272 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5273 | Register filler) { |
| 5274 | Label loop, entry; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5275 | jmp(&entry, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5276 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5277 | movp(Operand(current_address, 0), filler); |
| 5278 | addp(current_address, Immediate(kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5279 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5280 | cmpp(current_address, end_address); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5281 | j(below, &loop, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5282 | } |
| 5283 | |
| 5284 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5285 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 5286 | if (context_chain_length > 0) { |
| 5287 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5288 | movp(dst, Operand(rsi, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5289 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5290 | movp(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5291 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5292 | } else { |
| 5293 | // Slot is in the current function context. Move it into the |
| 5294 | // destination register in case we store into it (the write barrier |
| 5295 | // cannot be allowed to destroy the context in rsi). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5296 | movp(dst, rsi); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5297 | } |
| 5298 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5299 | // We should not have found a with context by walking the context |
| 5300 | // chain (i.e., the static scope chain and runtime context chain do |
| 5301 | // not agree). A variable occurring in such a scope should have |
| 5302 | // slot type LOOKUP and not CONTEXT. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5303 | if (emit_debug_code()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5304 | CompareRoot(FieldOperand(dst, HeapObject::kMapOffset), |
| 5305 | Heap::kWithContextMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5306 | Check(not_equal, kVariableResolvedToWithContext); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5307 | } |
| 5308 | } |
| 5309 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5310 | |
| 5311 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 5312 | ElementsKind expected_kind, |
| 5313 | ElementsKind transitioned_kind, |
| 5314 | Register map_in_out, |
| 5315 | Register scratch, |
| 5316 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5317 | DCHECK(IsFastElementsKind(expected_kind)); |
| 5318 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5319 | |
| 5320 | // 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] | 5321 | movp(scratch, NativeContextOperand()); |
| 5322 | cmpp(map_in_out, |
| 5323 | ContextOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5324 | j(not_equal, no_map_match); |
| 5325 | |
| 5326 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5327 | movp(map_in_out, |
| 5328 | ContextOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5329 | } |
| 5330 | |
| 5331 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5332 | #ifdef _WIN64 |
| 5333 | static const int kRegisterPassedArguments = 4; |
| 5334 | #else |
| 5335 | static const int kRegisterPassedArguments = 6; |
| 5336 | #endif |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5337 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5338 | |
| 5339 | void MacroAssembler::LoadNativeContextSlot(int index, Register dst) { |
| 5340 | movp(dst, NativeContextOperand()); |
| 5341 | movp(dst, ContextOperand(dst, index)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5342 | } |
| 5343 | |
| 5344 | |
| 5345 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 5346 | Register map) { |
| 5347 | // Load the initial map. The global functions all have initial maps. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5348 | movp(map, FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5349 | if (emit_debug_code()) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5350 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5351 | CheckMap(map, isolate()->factory()->meta_map(), &fail, DO_SMI_CHECK); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5352 | jmp(&ok); |
| 5353 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5354 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5355 | bind(&ok); |
| 5356 | } |
| 5357 | } |
| 5358 | |
| 5359 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5360 | int MacroAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5361 | // On Windows 64 stack slots are reserved by the caller for all arguments |
| 5362 | // including the ones passed in registers, and space is always allocated for |
| 5363 | // the four register arguments even if the function takes fewer than four |
| 5364 | // arguments. |
| 5365 | // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers |
| 5366 | // and the caller does not reserve stack slots for them. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5367 | DCHECK(num_arguments >= 0); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5368 | #ifdef _WIN64 |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5369 | const int kMinimumStackSlots = kRegisterPassedArguments; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5370 | if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
| 5371 | return num_arguments; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5372 | #else |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5373 | if (num_arguments < kRegisterPassedArguments) return 0; |
| 5374 | return num_arguments - kRegisterPassedArguments; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5375 | #endif |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5376 | } |
| 5377 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5378 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5379 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 5380 | Register index, |
| 5381 | Register value, |
| 5382 | uint32_t encoding_mask) { |
| 5383 | Label is_object; |
| 5384 | JumpIfNotSmi(string, &is_object); |
| 5385 | Abort(kNonObject); |
| 5386 | bind(&is_object); |
| 5387 | |
| 5388 | Push(value); |
| 5389 | movp(value, FieldOperand(string, HeapObject::kMapOffset)); |
| 5390 | movzxbp(value, FieldOperand(value, Map::kInstanceTypeOffset)); |
| 5391 | |
| 5392 | andb(value, Immediate(kStringRepresentationMask | kStringEncodingMask)); |
| 5393 | cmpp(value, Immediate(encoding_mask)); |
| 5394 | Pop(value); |
| 5395 | Check(equal, kUnexpectedStringType); |
| 5396 | |
| 5397 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 5398 | // string length without using a temp register, it is restored at the end of |
| 5399 | // this function. |
| 5400 | Integer32ToSmi(index, index); |
| 5401 | SmiCompare(index, FieldOperand(string, String::kLengthOffset)); |
| 5402 | Check(less, kIndexIsTooLarge); |
| 5403 | |
| 5404 | SmiCompare(index, Smi::FromInt(0)); |
| 5405 | Check(greater_equal, kIndexIsNegative); |
| 5406 | |
| 5407 | // Restore the index |
| 5408 | SmiToInteger32(index, index); |
| 5409 | } |
| 5410 | |
| 5411 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5412 | void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5413 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
| 5414 | DCHECK(frame_alignment != 0); |
| 5415 | DCHECK(num_arguments >= 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5416 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5417 | // Make stack end at alignment and allocate space for arguments and old rsp. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5418 | movp(kScratchRegister, rsp); |
| 5419 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5420 | int argument_slots_on_stack = |
| 5421 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5422 | subp(rsp, Immediate((argument_slots_on_stack + 1) * kRegisterSize)); |
| 5423 | andp(rsp, Immediate(-frame_alignment)); |
| 5424 | movp(Operand(rsp, argument_slots_on_stack * kRegisterSize), kScratchRegister); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5425 | } |
| 5426 | |
| 5427 | |
| 5428 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 5429 | int num_arguments) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5430 | LoadAddress(rax, function); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5431 | CallCFunction(rax, num_arguments); |
| 5432 | } |
| 5433 | |
| 5434 | |
| 5435 | void MacroAssembler::CallCFunction(Register function, int num_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5436 | DCHECK(has_frame()); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5437 | // Check stack alignment. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5438 | if (emit_debug_code()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5439 | CheckStackAlignment(); |
| 5440 | } |
| 5441 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5442 | call(function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5443 | DCHECK(base::OS::ActivationFrameAlignment() != 0); |
| 5444 | DCHECK(num_arguments >= 0); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5445 | int argument_slots_on_stack = |
| 5446 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5447 | movp(rsp, Operand(rsp, argument_slots_on_stack * kRegisterSize)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5448 | } |
| 5449 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5450 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5451 | #ifdef DEBUG |
| 5452 | bool AreAliased(Register reg1, |
| 5453 | Register reg2, |
| 5454 | Register reg3, |
| 5455 | Register reg4, |
| 5456 | Register reg5, |
| 5457 | Register reg6, |
| 5458 | Register reg7, |
| 5459 | Register reg8) { |
| 5460 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + |
| 5461 | reg3.is_valid() + reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 5462 | reg7.is_valid() + reg8.is_valid(); |
| 5463 | |
| 5464 | RegList regs = 0; |
| 5465 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 5466 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 5467 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 5468 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 5469 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 5470 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 5471 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 5472 | if (reg8.is_valid()) regs |= reg8.bit(); |
| 5473 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 5474 | |
| 5475 | return n_of_valid_regs != n_of_non_aliasing_regs; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5476 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5477 | #endif |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5478 | |
| 5479 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5480 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int size) |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 5481 | : address_(address), |
| 5482 | size_(size), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5483 | masm_(isolate, address, size + Assembler::kGap, CodeObjectRequired::kNo) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5484 | // Create a new macro assembler pointing to the address of the code to patch. |
| 5485 | // The size is adjusted with kGap on order for the assembler to generate size |
| 5486 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5487 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5488 | } |
| 5489 | |
| 5490 | |
| 5491 | CodePatcher::~CodePatcher() { |
| 5492 | // Indicate that code has changed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5493 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5494 | |
| 5495 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5496 | DCHECK(masm_.pc_ == address_ + size_); |
| 5497 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5498 | } |
| 5499 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5500 | |
| 5501 | void MacroAssembler::CheckPageFlag( |
| 5502 | Register object, |
| 5503 | Register scratch, |
| 5504 | int mask, |
| 5505 | Condition cc, |
| 5506 | Label* condition_met, |
| 5507 | Label::Distance condition_met_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5508 | DCHECK(cc == zero || cc == not_zero); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5509 | if (scratch.is(object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5510 | andp(scratch, Immediate(~Page::kPageAlignmentMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5511 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5512 | movp(scratch, Immediate(~Page::kPageAlignmentMask)); |
| 5513 | andp(scratch, object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5514 | } |
| 5515 | if (mask < (1 << kBitsPerByte)) { |
| 5516 | testb(Operand(scratch, MemoryChunk::kFlagsOffset), |
| 5517 | Immediate(static_cast<uint8_t>(mask))); |
| 5518 | } else { |
| 5519 | testl(Operand(scratch, MemoryChunk::kFlagsOffset), Immediate(mask)); |
| 5520 | } |
| 5521 | j(cc, condition_met, condition_met_distance); |
| 5522 | } |
| 5523 | |
| 5524 | |
| 5525 | void MacroAssembler::JumpIfBlack(Register object, |
| 5526 | Register bitmap_scratch, |
| 5527 | Register mask_scratch, |
| 5528 | Label* on_black, |
| 5529 | Label::Distance on_black_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5530 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, rcx)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5531 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5532 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 5533 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5534 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5535 | // The mask_scratch register contains a 1 at the position of the first bit |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5536 | // and a 1 at a position of the second bit. All other positions are zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5537 | movp(rcx, mask_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5538 | andp(rcx, Operand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5539 | cmpp(mask_scratch, rcx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5540 | j(equal, on_black, on_black_distance); |
| 5541 | } |
| 5542 | |
| 5543 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5544 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 5545 | Register bitmap_reg, |
| 5546 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5547 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, rcx)); |
| 5548 | movp(bitmap_reg, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5549 | // Sign extended 32 bit immediate. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5550 | andp(bitmap_reg, Immediate(~Page::kPageAlignmentMask)); |
| 5551 | movp(rcx, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5552 | int shift = |
| 5553 | Bitmap::kBitsPerCellLog2 + kPointerSizeLog2 - Bitmap::kBytesPerCellLog2; |
| 5554 | shrl(rcx, Immediate(shift)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5555 | andp(rcx, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5556 | Immediate((Page::kPageAlignmentMask >> shift) & |
| 5557 | ~(Bitmap::kBytesPerCell - 1))); |
| 5558 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5559 | addp(bitmap_reg, rcx); |
| 5560 | movp(rcx, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5561 | shrl(rcx, Immediate(kPointerSizeLog2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5562 | andp(rcx, Immediate((1 << Bitmap::kBitsPerCellLog2) - 1)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5563 | movl(mask_reg, Immediate(3)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5564 | shlp_cl(mask_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5565 | } |
| 5566 | |
| 5567 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5568 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 5569 | Register mask_scratch, Label* value_is_white, |
| 5570 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5571 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, rcx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5572 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 5573 | |
| 5574 | // 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] | 5575 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5576 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 5577 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5578 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5579 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5580 | // Since both black and grey have a 1 in the first position and white does |
| 5581 | // not have a 1 there we only need to check one bit. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5582 | testp(Operand(bitmap_scratch, MemoryChunk::kHeaderSize), mask_scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5583 | j(zero, value_is_white, distance); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5584 | } |
| 5585 | |
| 5586 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5587 | void MacroAssembler::CheckEnumCache(Label* call_runtime) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5588 | Label next, start; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5589 | Register empty_fixed_array_value = r8; |
| 5590 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5591 | movp(rcx, rax); |
| 5592 | |
| 5593 | // Check if the enum length field is properly initialized, indicating that |
| 5594 | // there is an enum cache. |
| 5595 | movp(rbx, FieldOperand(rcx, HeapObject::kMapOffset)); |
| 5596 | |
| 5597 | EnumLength(rdx, rbx); |
| 5598 | Cmp(rdx, Smi::FromInt(kInvalidEnumCacheSentinel)); |
| 5599 | j(equal, call_runtime); |
| 5600 | |
| 5601 | jmp(&start); |
| 5602 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5603 | bind(&next); |
| 5604 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5605 | movp(rbx, FieldOperand(rcx, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5606 | |
| 5607 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5608 | EnumLength(rdx, rbx); |
| 5609 | Cmp(rdx, Smi::FromInt(0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5610 | j(not_equal, call_runtime); |
| 5611 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5612 | bind(&start); |
| 5613 | |
| 5614 | // Check that there are no elements. Register rcx contains the current JS |
| 5615 | // object we've reached through the prototype chain. |
| 5616 | Label no_elements; |
| 5617 | cmpp(empty_fixed_array_value, |
| 5618 | FieldOperand(rcx, JSObject::kElementsOffset)); |
| 5619 | j(equal, &no_elements); |
| 5620 | |
| 5621 | // Second chance, the object may be using the empty slow element dictionary. |
| 5622 | LoadRoot(kScratchRegister, Heap::kEmptySlowElementDictionaryRootIndex); |
| 5623 | cmpp(kScratchRegister, FieldOperand(rcx, JSObject::kElementsOffset)); |
| 5624 | j(not_equal, call_runtime); |
| 5625 | |
| 5626 | bind(&no_elements); |
| 5627 | movp(rcx, FieldOperand(rbx, Map::kPrototypeOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5628 | CompareRoot(rcx, Heap::kNullValueRootIndex); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5629 | j(not_equal, &next); |
| 5630 | } |
| 5631 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5632 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5633 | void MacroAssembler::TestJSArrayForAllocationMemento( |
| 5634 | Register receiver_reg, |
| 5635 | Register scratch_reg, |
| 5636 | Label* no_memento_found) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5637 | Label map_check; |
| 5638 | Label top_check; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5639 | ExternalReference new_space_allocation_top = |
| 5640 | ExternalReference::new_space_allocation_top_address(isolate()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5641 | const int kMementoMapOffset = JSArray::kSize - kHeapObjectTag; |
| 5642 | const int kMementoEndOffset = kMementoMapOffset + AllocationMemento::kSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5643 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5644 | // Bail out if the object is not in new space. |
| 5645 | JumpIfNotInNewSpace(receiver_reg, scratch_reg, no_memento_found); |
| 5646 | // If the object is in new space, we need to check whether it is on the same |
| 5647 | // page as the current top. |
| 5648 | leap(scratch_reg, Operand(receiver_reg, kMementoEndOffset)); |
| 5649 | xorp(scratch_reg, ExternalOperand(new_space_allocation_top)); |
| 5650 | testp(scratch_reg, Immediate(~Page::kPageAlignmentMask)); |
| 5651 | j(zero, &top_check); |
| 5652 | // The object is on a different page than allocation top. Bail out if the |
| 5653 | // object sits on the page boundary as no memento can follow and we cannot |
| 5654 | // touch the memory following it. |
| 5655 | leap(scratch_reg, Operand(receiver_reg, kMementoEndOffset)); |
| 5656 | xorp(scratch_reg, receiver_reg); |
| 5657 | testp(scratch_reg, Immediate(~Page::kPageAlignmentMask)); |
| 5658 | j(not_zero, no_memento_found); |
| 5659 | // Continue with the actual map check. |
| 5660 | jmp(&map_check); |
| 5661 | // If top is on the same page as the current object, we need to check whether |
| 5662 | // we are below top. |
| 5663 | bind(&top_check); |
| 5664 | leap(scratch_reg, Operand(receiver_reg, kMementoEndOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5665 | cmpp(scratch_reg, ExternalOperand(new_space_allocation_top)); |
| 5666 | j(greater, no_memento_found); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5667 | // Memento map check. |
| 5668 | bind(&map_check); |
| 5669 | CompareRoot(MemOperand(receiver_reg, kMementoMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5670 | Heap::kAllocationMementoMapRootIndex); |
| 5671 | } |
| 5672 | |
| 5673 | |
| 5674 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 5675 | Register object, |
| 5676 | Register scratch0, |
| 5677 | Register scratch1, |
| 5678 | Label* found) { |
| 5679 | DCHECK(!(scratch0.is(kScratchRegister) && scratch1.is(kScratchRegister))); |
| 5680 | DCHECK(!scratch1.is(scratch0)); |
| 5681 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5682 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5683 | |
| 5684 | movp(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5685 | movp(current, FieldOperand(current, HeapObject::kMapOffset)); |
| 5686 | movp(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 5687 | CompareRoot(current, Heap::kNullValueRootIndex); |
| 5688 | j(equal, &end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5689 | |
| 5690 | // Loop based on the map going up the prototype chain. |
| 5691 | bind(&loop_again); |
| 5692 | movp(current, FieldOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5693 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 5694 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 5695 | CmpInstanceType(current, JS_OBJECT_TYPE); |
| 5696 | j(below, found); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5697 | movp(scratch1, FieldOperand(current, Map::kBitField2Offset)); |
| 5698 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 5699 | cmpp(scratch1, Immediate(DICTIONARY_ELEMENTS)); |
| 5700 | j(equal, found); |
| 5701 | movp(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 5702 | CompareRoot(current, Heap::kNullValueRootIndex); |
| 5703 | j(not_equal, &loop_again); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5704 | |
| 5705 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5706 | } |
| 5707 | |
| 5708 | |
| 5709 | void MacroAssembler::TruncatingDiv(Register dividend, int32_t divisor) { |
| 5710 | DCHECK(!dividend.is(rax)); |
| 5711 | DCHECK(!dividend.is(rdx)); |
| 5712 | base::MagicNumbersForDivision<uint32_t> mag = |
| 5713 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 5714 | movl(rax, Immediate(mag.multiplier)); |
| 5715 | imull(dividend); |
| 5716 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 5717 | if (divisor > 0 && neg) addl(rdx, dividend); |
| 5718 | if (divisor < 0 && !neg && mag.multiplier > 0) subl(rdx, dividend); |
| 5719 | if (mag.shift > 0) sarl(rdx, Immediate(mag.shift)); |
| 5720 | movl(rax, dividend); |
| 5721 | shrl(rax, Immediate(31)); |
| 5722 | addl(rdx, rax); |
| 5723 | } |
| 5724 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5725 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5726 | } // namespace internal |
| 5727 | } // namespace v8 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 5728 | |
| 5729 | #endif // V8_TARGET_ARCH_X64 |