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. |
| 218 | LoadRoot(scratch, Heap::kStoreBufferTopRootIndex); |
| 219 | // Store pointer to buffer. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 220 | movp(Operand(scratch, 0), addr); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 221 | // Increment buffer top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 222 | addp(scratch, Immediate(kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 223 | // Write back new top of buffer. |
| 224 | StoreRoot(scratch, Heap::kStoreBufferTopRootIndex); |
| 225 | // Call stub on end of buffer. |
| 226 | Label done; |
| 227 | // Check for end of buffer. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 228 | testp(scratch, Immediate(StoreBuffer::kStoreBufferOverflowBit)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 229 | if (and_then == kReturnAtEnd) { |
| 230 | Label buffer_overflowed; |
| 231 | j(not_equal, &buffer_overflowed, Label::kNear); |
| 232 | ret(0); |
| 233 | bind(&buffer_overflowed); |
| 234 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 235 | DCHECK(and_then == kFallThroughAtEnd); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 236 | j(equal, &done, Label::kNear); |
| 237 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 238 | StoreBufferOverflowStub store_buffer_overflow(isolate(), save_fp); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 239 | CallStub(&store_buffer_overflow); |
| 240 | if (and_then == kReturnAtEnd) { |
| 241 | ret(0); |
| 242 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 243 | DCHECK(and_then == kFallThroughAtEnd); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 244 | bind(&done); |
| 245 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 249 | void MacroAssembler::InNewSpace(Register object, |
| 250 | Register scratch, |
| 251 | Condition cc, |
| 252 | Label* branch, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 253 | Label::Distance distance) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 254 | const int mask = |
| 255 | (1 << MemoryChunk::IN_FROM_SPACE) | (1 << MemoryChunk::IN_TO_SPACE); |
| 256 | CheckPageFlag(object, scratch, mask, cc, branch, distance); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 260 | void MacroAssembler::RecordWriteField( |
| 261 | Register object, |
| 262 | int offset, |
| 263 | Register value, |
| 264 | Register dst, |
| 265 | SaveFPRegsMode save_fp, |
| 266 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 267 | SmiCheck smi_check, |
| 268 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 269 | // First, check if a write barrier is even needed. The tests below |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 270 | // catch stores of Smis. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 271 | Label done; |
| 272 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 273 | // Skip barrier if writing a smi. |
| 274 | if (smi_check == INLINE_SMI_CHECK) { |
| 275 | JumpIfSmi(value, &done); |
| 276 | } |
| 277 | |
| 278 | // Although the object register is tagged, the offset is relative to the start |
| 279 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 280 | DCHECK(IsAligned(offset, kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 281 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | leap(dst, FieldOperand(object, offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 283 | if (emit_debug_code()) { |
| 284 | Label ok; |
| 285 | testb(dst, Immediate((1 << kPointerSizeLog2) - 1)); |
| 286 | j(zero, &ok, Label::kNear); |
| 287 | int3(); |
| 288 | bind(&ok); |
| 289 | } |
| 290 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 291 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 292 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 293 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 294 | bind(&done); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 295 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 296 | // Clobber clobbered input registers when running with the debug-code flag |
| 297 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 298 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 299 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
| 300 | Move(dst, kZapValue, Assembler::RelocInfoNone()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 301 | } |
| 302 | } |
| 303 | |
| 304 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 305 | void MacroAssembler::RecordWriteArray( |
| 306 | Register object, |
| 307 | Register value, |
| 308 | Register index, |
| 309 | SaveFPRegsMode save_fp, |
| 310 | RememberedSetAction remembered_set_action, |
| 311 | SmiCheck smi_check, |
| 312 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 313 | // First, check if a write barrier is even needed. The tests below |
| 314 | // catch stores of Smis. |
| 315 | Label done; |
| 316 | |
| 317 | // Skip barrier if writing a smi. |
| 318 | if (smi_check == INLINE_SMI_CHECK) { |
| 319 | JumpIfSmi(value, &done); |
| 320 | } |
| 321 | |
| 322 | // Array access: calculate the destination address. Index is not a smi. |
| 323 | Register dst = index; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 324 | leap(dst, Operand(object, index, times_pointer_size, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 325 | FixedArray::kHeaderSize - kHeapObjectTag)); |
| 326 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 327 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 328 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 329 | |
| 330 | bind(&done); |
| 331 | |
| 332 | // Clobber clobbered input registers when running with the debug-code flag |
| 333 | // turned on to provoke errors. |
| 334 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 335 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
| 336 | Move(index, kZapValue, Assembler::RelocInfoNone()); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 337 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 341 | void MacroAssembler::RecordWriteForMap(Register object, |
| 342 | Register map, |
| 343 | Register dst, |
| 344 | SaveFPRegsMode fp_mode) { |
| 345 | DCHECK(!object.is(kScratchRegister)); |
| 346 | DCHECK(!object.is(map)); |
| 347 | DCHECK(!object.is(dst)); |
| 348 | DCHECK(!map.is(dst)); |
| 349 | AssertNotSmi(object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 350 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 351 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 352 | Label ok; |
| 353 | if (map.is(kScratchRegister)) pushq(map); |
| 354 | CompareMap(map, isolate()->factory()->meta_map()); |
| 355 | if (map.is(kScratchRegister)) popq(map); |
| 356 | j(equal, &ok, Label::kNear); |
| 357 | int3(); |
| 358 | bind(&ok); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 359 | } |
| 360 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 361 | if (!FLAG_incremental_marking) { |
| 362 | return; |
| 363 | } |
| 364 | |
| 365 | if (emit_debug_code()) { |
| 366 | Label ok; |
| 367 | if (map.is(kScratchRegister)) pushq(map); |
| 368 | cmpp(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 369 | if (map.is(kScratchRegister)) popq(map); |
| 370 | j(equal, &ok, Label::kNear); |
| 371 | int3(); |
| 372 | bind(&ok); |
| 373 | } |
| 374 | |
| 375 | // Compute the address. |
| 376 | leap(dst, FieldOperand(object, HeapObject::kMapOffset)); |
| 377 | |
| 378 | // First, check if a write barrier is even needed. The tests below |
| 379 | // catch stores of smis and stores into the young generation. |
| 380 | Label done; |
| 381 | |
| 382 | // A single check of the map's pages interesting flag suffices, since it is |
| 383 | // only set during incremental collection, and then it's also guaranteed that |
| 384 | // the from object's page's interesting flag is also set. This optimization |
| 385 | // relies on the fact that maps can never be in new space. |
| 386 | CheckPageFlag(map, |
| 387 | map, // Used as scratch. |
| 388 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 389 | zero, |
| 390 | &done, |
| 391 | Label::kNear); |
| 392 | |
| 393 | RecordWriteStub stub(isolate(), object, map, dst, OMIT_REMEMBERED_SET, |
| 394 | fp_mode); |
| 395 | CallStub(&stub); |
| 396 | |
| 397 | bind(&done); |
| 398 | |
| 399 | // Count number of write barriers in generated code. |
| 400 | isolate()->counters()->write_barriers_static()->Increment(); |
| 401 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 402 | |
| 403 | // Clobber clobbered registers when running with the debug-code flag |
| 404 | // turned on to provoke errors. |
| 405 | if (emit_debug_code()) { |
| 406 | Move(dst, kZapValue, Assembler::RelocInfoNone()); |
| 407 | Move(map, kZapValue, Assembler::RelocInfoNone()); |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | |
| 412 | void MacroAssembler::RecordWrite( |
| 413 | Register object, |
| 414 | Register address, |
| 415 | Register value, |
| 416 | SaveFPRegsMode fp_mode, |
| 417 | RememberedSetAction remembered_set_action, |
| 418 | SmiCheck smi_check, |
| 419 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 420 | DCHECK(!object.is(value)); |
| 421 | DCHECK(!object.is(address)); |
| 422 | DCHECK(!value.is(address)); |
| 423 | AssertNotSmi(object); |
| 424 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 425 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 426 | !FLAG_incremental_marking) { |
| 427 | return; |
| 428 | } |
| 429 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 430 | if (emit_debug_code()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 431 | Label ok; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 432 | cmpp(value, Operand(address, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 433 | j(equal, &ok, Label::kNear); |
| 434 | int3(); |
| 435 | bind(&ok); |
| 436 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 437 | |
| 438 | // First, check if a write barrier is even needed. The tests below |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 439 | // catch stores of smis and stores into the young generation. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 440 | Label done; |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 441 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 442 | if (smi_check == INLINE_SMI_CHECK) { |
| 443 | // Skip barrier if writing a smi. |
| 444 | JumpIfSmi(value, &done); |
| 445 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 446 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 447 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 448 | CheckPageFlag(value, |
| 449 | value, // Used as scratch. |
| 450 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 451 | zero, |
| 452 | &done, |
| 453 | Label::kNear); |
| 454 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 455 | |
| 456 | CheckPageFlag(object, |
| 457 | value, // Used as scratch. |
| 458 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 459 | zero, |
| 460 | &done, |
| 461 | Label::kNear); |
| 462 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 463 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 464 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 465 | CallStub(&stub); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 466 | |
| 467 | bind(&done); |
| 468 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 469 | // Count number of write barriers in generated code. |
| 470 | isolate()->counters()->write_barriers_static()->Increment(); |
| 471 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 472 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 473 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 474 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 475 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 476 | Move(address, kZapValue, Assembler::RelocInfoNone()); |
| 477 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 478 | } |
| 479 | } |
| 480 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 481 | void MacroAssembler::RecordWriteCodeEntryField(Register js_function, |
| 482 | Register code_entry, |
| 483 | Register scratch) { |
| 484 | const int offset = JSFunction::kCodeEntryOffset; |
| 485 | |
| 486 | // The input registers are fixed to make calling the C write barrier function |
| 487 | // easier. |
| 488 | DCHECK(js_function.is(rdi)); |
| 489 | DCHECK(code_entry.is(rcx)); |
| 490 | DCHECK(scratch.is(rax)); |
| 491 | |
| 492 | // Since a code entry (value) is always in old space, we don't need to update |
| 493 | // remembered set. If incremental marking is off, there is nothing for us to |
| 494 | // do. |
| 495 | if (!FLAG_incremental_marking) return; |
| 496 | |
| 497 | AssertNotSmi(js_function); |
| 498 | |
| 499 | if (emit_debug_code()) { |
| 500 | Label ok; |
| 501 | leap(scratch, FieldOperand(js_function, offset)); |
| 502 | cmpp(code_entry, Operand(scratch, 0)); |
| 503 | j(equal, &ok, Label::kNear); |
| 504 | int3(); |
| 505 | bind(&ok); |
| 506 | } |
| 507 | |
| 508 | // First, check if a write barrier is even needed. The tests below |
| 509 | // catch stores of Smis and stores into young gen. |
| 510 | Label done; |
| 511 | |
| 512 | CheckPageFlag(code_entry, scratch, |
| 513 | MemoryChunk::kPointersToHereAreInterestingMask, zero, &done, |
| 514 | Label::kNear); |
| 515 | CheckPageFlag(js_function, scratch, |
| 516 | MemoryChunk::kPointersFromHereAreInterestingMask, zero, &done, |
| 517 | Label::kNear); |
| 518 | |
| 519 | // Save input registers. |
| 520 | Push(js_function); |
| 521 | Push(code_entry); |
| 522 | |
| 523 | const Register dst = scratch; |
| 524 | leap(dst, FieldOperand(js_function, offset)); |
| 525 | |
| 526 | // Save caller-saved registers. |
| 527 | PushCallerSaved(kDontSaveFPRegs, js_function, code_entry); |
| 528 | |
| 529 | int argument_count = 3; |
| 530 | PrepareCallCFunction(argument_count); |
| 531 | |
| 532 | // Load the argument registers. |
| 533 | if (arg_reg_1.is(rcx)) { |
| 534 | // Windows calling convention. |
| 535 | DCHECK(arg_reg_2.is(rdx) && arg_reg_3.is(r8)); |
| 536 | |
| 537 | movp(arg_reg_1, js_function); // rcx gets rdi. |
| 538 | movp(arg_reg_2, dst); // rdx gets rax. |
| 539 | } else { |
| 540 | // AMD64 calling convention. |
| 541 | DCHECK(arg_reg_1.is(rdi) && arg_reg_2.is(rsi) && arg_reg_3.is(rdx)); |
| 542 | |
| 543 | // rdi is already loaded with js_function. |
| 544 | movp(arg_reg_2, dst); // rsi gets rax. |
| 545 | } |
| 546 | Move(arg_reg_3, ExternalReference::isolate_address(isolate())); |
| 547 | |
| 548 | { |
| 549 | AllowExternalCallThatCantCauseGC scope(this); |
| 550 | CallCFunction( |
| 551 | ExternalReference::incremental_marking_record_write_code_entry_function( |
| 552 | isolate()), |
| 553 | argument_count); |
| 554 | } |
| 555 | |
| 556 | // Restore caller-saved registers. |
| 557 | PopCallerSaved(kDontSaveFPRegs, js_function, code_entry); |
| 558 | |
| 559 | // Restore input registers. |
| 560 | Pop(code_entry); |
| 561 | Pop(js_function); |
| 562 | |
| 563 | bind(&done); |
| 564 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 565 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 566 | void MacroAssembler::Assert(Condition cc, BailoutReason reason) { |
| 567 | if (emit_debug_code()) Check(cc, reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 571 | void MacroAssembler::AssertFastElements(Register elements) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 572 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 573 | Label ok; |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 574 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 575 | Heap::kFixedArrayMapRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 576 | j(equal, &ok, Label::kNear); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 577 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 578 | Heap::kFixedDoubleArrayMapRootIndex); |
| 579 | j(equal, &ok, Label::kNear); |
| 580 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 581 | Heap::kFixedCOWArrayMapRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 582 | j(equal, &ok, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 583 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 584 | bind(&ok); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 589 | void MacroAssembler::Check(Condition cc, BailoutReason reason) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 590 | Label L; |
| 591 | j(cc, &L, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 592 | Abort(reason); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 593 | // Control will not return here. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 594 | bind(&L); |
| 595 | } |
| 596 | |
| 597 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 598 | void MacroAssembler::CheckStackAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 599 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 600 | int frame_alignment_mask = frame_alignment - 1; |
| 601 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 602 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 603 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 604 | testp(rsp, Immediate(frame_alignment_mask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 605 | j(zero, &alignment_as_expected, Label::kNear); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 606 | // Abort if stack is not aligned. |
| 607 | int3(); |
| 608 | bind(&alignment_as_expected); |
| 609 | } |
| 610 | } |
| 611 | |
| 612 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 613 | void MacroAssembler::NegativeZeroTest(Register result, |
| 614 | Register op, |
| 615 | Label* then_label) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 616 | Label ok; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 617 | testl(result, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 618 | j(not_zero, &ok, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 619 | testl(op, op); |
| 620 | j(sign, then_label); |
| 621 | bind(&ok); |
| 622 | } |
| 623 | |
| 624 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 625 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 626 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 627 | const char* msg = GetBailoutReason(reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 628 | if (msg != NULL) { |
| 629 | RecordComment("Abort message: "); |
| 630 | RecordComment(msg); |
| 631 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 632 | |
| 633 | if (FLAG_trap_on_abort) { |
| 634 | int3(); |
| 635 | return; |
| 636 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 637 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 638 | |
| 639 | Move(kScratchRegister, Smi::FromInt(static_cast<int>(reason)), |
| 640 | Assembler::RelocInfoNone()); |
| 641 | Push(kScratchRegister); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 642 | |
| 643 | if (!has_frame_) { |
| 644 | // We don't actually want to generate a pile of code for this, so just |
| 645 | // claim there is a stack frame, without generating one. |
| 646 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 647 | CallRuntime(Runtime::kAbort); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 648 | } else { |
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 | } |
| 651 | // Control will not return here. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 652 | int3(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 653 | } |
| 654 | |
| 655 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 656 | void MacroAssembler::CallStub(CodeStub* stub, TypeFeedbackId ast_id) { |
| 657 | DCHECK(AllowThisStubCall(stub)); // Calls are not allowed in some stubs |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 658 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 659 | } |
| 660 | |
| 661 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 662 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 663 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 664 | } |
| 665 | |
| 666 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 667 | void MacroAssembler::StubReturn(int argc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 668 | DCHECK(argc >= 1 && generating_stub()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 669 | ret((argc - 1) * kPointerSize); |
| 670 | } |
| 671 | |
| 672 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 673 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 674 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 675 | } |
| 676 | |
| 677 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 678 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
| 679 | // The assert checks that the constants for the maximum number of digits |
| 680 | // for an array index cached in the hash field and the number of bits |
| 681 | // reserved for it does not conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 682 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 683 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 684 | if (!hash.is(index)) { |
| 685 | movl(index, hash); |
| 686 | } |
| 687 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 691 | void MacroAssembler::CallRuntime(const Runtime::Function* f, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 692 | int num_arguments, |
| 693 | SaveFPRegsMode save_doubles) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 694 | // If the expected number of arguments of the runtime function is |
| 695 | // constant, we check that the actual number of arguments match the |
| 696 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 697 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 698 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 699 | // TODO(1236192): Most runtime routines don't need the number of |
| 700 | // arguments passed in because it is constant. At some point we |
| 701 | // should remove this need and make the runtime routine entry code |
| 702 | // smarter. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 703 | Set(rax, num_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 704 | LoadAddress(rbx, ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 705 | CEntryStub ces(isolate(), f->result_size, save_doubles); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 706 | CallStub(&ces); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 707 | } |
| 708 | |
| 709 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 710 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
| 711 | int num_arguments) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 712 | Set(rax, num_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 713 | LoadAddress(rbx, ext); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 714 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 715 | CEntryStub stub(isolate(), 1); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 716 | CallStub(&stub); |
| 717 | } |
| 718 | |
| 719 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 720 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 721 | // ----------- S t a t e ------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 722 | // -- rsp[0] : return address |
| 723 | // -- rsp[8] : argument num_arguments - 1 |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 724 | // ... |
| 725 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 726 | // |
| 727 | // For runtime functions with variable arguments: |
| 728 | // -- rax : number of arguments |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 729 | // ----------------------------------- |
| 730 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 731 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 732 | DCHECK_EQ(1, function->result_size); |
| 733 | if (function->nargs >= 0) { |
| 734 | Set(rax, function->nargs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 735 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 736 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 737 | } |
| 738 | |
| 739 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 740 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 741 | // Set the entry point and jump to the C entry runtime stub. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 742 | LoadAddress(rbx, ext); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 743 | CEntryStub ces(isolate(), 1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 744 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 745 | } |
| 746 | |
| 747 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 748 | #define REG(Name) \ |
| 749 | { Register::kCode_##Name } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 750 | |
| 751 | static const Register saved_regs[] = { |
| 752 | REG(rax), REG(rcx), REG(rdx), REG(rbx), REG(rbp), REG(rsi), REG(rdi), REG(r8), |
| 753 | REG(r9), REG(r10), REG(r11) |
| 754 | }; |
| 755 | |
| 756 | #undef REG |
| 757 | |
| 758 | static const int kNumberOfSavedRegs = sizeof(saved_regs) / sizeof(Register); |
| 759 | |
| 760 | |
| 761 | void MacroAssembler::PushCallerSaved(SaveFPRegsMode fp_mode, |
| 762 | Register exclusion1, |
| 763 | Register exclusion2, |
| 764 | Register exclusion3) { |
| 765 | // We don't allow a GC during a store buffer overflow so there is no need to |
| 766 | // store the registers in any particular way, but we do have to store and |
| 767 | // restore them. |
| 768 | for (int i = 0; i < kNumberOfSavedRegs; i++) { |
| 769 | Register reg = saved_regs[i]; |
| 770 | if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 771 | pushq(reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 772 | } |
| 773 | } |
| 774 | // R12 to r15 are callee save on all platforms. |
| 775 | if (fp_mode == kSaveFPRegs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 776 | subp(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters)); |
| 777 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 778 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 779 | Movsd(Operand(rsp, i * kDoubleSize), reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 780 | } |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | |
| 785 | void MacroAssembler::PopCallerSaved(SaveFPRegsMode fp_mode, |
| 786 | Register exclusion1, |
| 787 | Register exclusion2, |
| 788 | Register exclusion3) { |
| 789 | if (fp_mode == kSaveFPRegs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 790 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 791 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 792 | Movsd(reg, Operand(rsp, i * kDoubleSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 793 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 794 | addp(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 795 | } |
| 796 | for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) { |
| 797 | Register reg = saved_regs[i]; |
| 798 | if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 799 | popq(reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 800 | } |
| 801 | } |
| 802 | } |
| 803 | |
| 804 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 805 | void MacroAssembler::Cvtss2sd(XMMRegister dst, XMMRegister src) { |
| 806 | if (CpuFeatures::IsSupported(AVX)) { |
| 807 | CpuFeatureScope scope(this, AVX); |
| 808 | vcvtss2sd(dst, src, src); |
| 809 | } else { |
| 810 | cvtss2sd(dst, src); |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | |
| 815 | void MacroAssembler::Cvtss2sd(XMMRegister dst, const Operand& src) { |
| 816 | if (CpuFeatures::IsSupported(AVX)) { |
| 817 | CpuFeatureScope scope(this, AVX); |
| 818 | vcvtss2sd(dst, dst, src); |
| 819 | } else { |
| 820 | cvtss2sd(dst, src); |
| 821 | } |
| 822 | } |
| 823 | |
| 824 | |
| 825 | void MacroAssembler::Cvtsd2ss(XMMRegister dst, XMMRegister src) { |
| 826 | if (CpuFeatures::IsSupported(AVX)) { |
| 827 | CpuFeatureScope scope(this, AVX); |
| 828 | vcvtsd2ss(dst, src, src); |
| 829 | } else { |
| 830 | cvtsd2ss(dst, src); |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | |
| 835 | void MacroAssembler::Cvtsd2ss(XMMRegister dst, const Operand& src) { |
| 836 | if (CpuFeatures::IsSupported(AVX)) { |
| 837 | CpuFeatureScope scope(this, AVX); |
| 838 | vcvtsd2ss(dst, dst, src); |
| 839 | } else { |
| 840 | cvtsd2ss(dst, src); |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 845 | void MacroAssembler::Cvtlsi2sd(XMMRegister dst, Register src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 846 | if (CpuFeatures::IsSupported(AVX)) { |
| 847 | CpuFeatureScope scope(this, AVX); |
| 848 | vxorpd(dst, dst, dst); |
| 849 | vcvtlsi2sd(dst, dst, src); |
| 850 | } else { |
| 851 | xorpd(dst, dst); |
| 852 | cvtlsi2sd(dst, src); |
| 853 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 854 | } |
| 855 | |
| 856 | |
| 857 | void MacroAssembler::Cvtlsi2sd(XMMRegister dst, const Operand& src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 858 | if (CpuFeatures::IsSupported(AVX)) { |
| 859 | CpuFeatureScope scope(this, AVX); |
| 860 | vxorpd(dst, dst, dst); |
| 861 | vcvtlsi2sd(dst, dst, src); |
| 862 | } else { |
| 863 | xorpd(dst, dst); |
| 864 | cvtlsi2sd(dst, src); |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 869 | void MacroAssembler::Cvtlsi2ss(XMMRegister dst, Register src) { |
| 870 | if (CpuFeatures::IsSupported(AVX)) { |
| 871 | CpuFeatureScope scope(this, AVX); |
| 872 | vxorps(dst, dst, dst); |
| 873 | vcvtlsi2ss(dst, dst, src); |
| 874 | } else { |
| 875 | xorps(dst, dst); |
| 876 | cvtlsi2ss(dst, src); |
| 877 | } |
| 878 | } |
| 879 | |
| 880 | |
| 881 | void MacroAssembler::Cvtlsi2ss(XMMRegister dst, const Operand& src) { |
| 882 | if (CpuFeatures::IsSupported(AVX)) { |
| 883 | CpuFeatureScope scope(this, AVX); |
| 884 | vxorps(dst, dst, dst); |
| 885 | vcvtlsi2ss(dst, dst, src); |
| 886 | } else { |
| 887 | xorps(dst, dst); |
| 888 | cvtlsi2ss(dst, src); |
| 889 | } |
| 890 | } |
| 891 | |
| 892 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 893 | void MacroAssembler::Cvtqsi2ss(XMMRegister dst, Register src) { |
| 894 | if (CpuFeatures::IsSupported(AVX)) { |
| 895 | CpuFeatureScope scope(this, AVX); |
| 896 | vxorps(dst, dst, dst); |
| 897 | vcvtqsi2ss(dst, dst, src); |
| 898 | } else { |
| 899 | xorps(dst, dst); |
| 900 | cvtqsi2ss(dst, src); |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | |
| 905 | void MacroAssembler::Cvtqsi2ss(XMMRegister dst, const Operand& src) { |
| 906 | if (CpuFeatures::IsSupported(AVX)) { |
| 907 | CpuFeatureScope scope(this, AVX); |
| 908 | vxorps(dst, dst, dst); |
| 909 | vcvtqsi2ss(dst, dst, src); |
| 910 | } else { |
| 911 | xorps(dst, dst); |
| 912 | cvtqsi2ss(dst, src); |
| 913 | } |
| 914 | } |
| 915 | |
| 916 | |
| 917 | void MacroAssembler::Cvtqsi2sd(XMMRegister dst, Register src) { |
| 918 | if (CpuFeatures::IsSupported(AVX)) { |
| 919 | CpuFeatureScope scope(this, AVX); |
| 920 | vxorpd(dst, dst, dst); |
| 921 | vcvtqsi2sd(dst, dst, src); |
| 922 | } else { |
| 923 | xorpd(dst, dst); |
| 924 | cvtqsi2sd(dst, src); |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | |
| 929 | void MacroAssembler::Cvtqsi2sd(XMMRegister dst, const Operand& src) { |
| 930 | if (CpuFeatures::IsSupported(AVX)) { |
| 931 | CpuFeatureScope scope(this, AVX); |
| 932 | vxorpd(dst, dst, dst); |
| 933 | vcvtqsi2sd(dst, dst, src); |
| 934 | } else { |
| 935 | xorpd(dst, dst); |
| 936 | cvtqsi2sd(dst, src); |
| 937 | } |
| 938 | } |
| 939 | |
| 940 | |
| 941 | void MacroAssembler::Cvtqui2ss(XMMRegister dst, Register src, Register tmp) { |
| 942 | Label msb_set_src; |
| 943 | Label jmp_return; |
| 944 | testq(src, src); |
| 945 | j(sign, &msb_set_src, Label::kNear); |
| 946 | Cvtqsi2ss(dst, src); |
| 947 | jmp(&jmp_return, Label::kNear); |
| 948 | bind(&msb_set_src); |
| 949 | movq(tmp, src); |
| 950 | shrq(src, Immediate(1)); |
| 951 | // Recover the least significant bit to avoid rounding errors. |
| 952 | andq(tmp, Immediate(1)); |
| 953 | orq(src, tmp); |
| 954 | Cvtqsi2ss(dst, src); |
| 955 | addss(dst, dst); |
| 956 | bind(&jmp_return); |
| 957 | } |
| 958 | |
| 959 | |
| 960 | void MacroAssembler::Cvtqui2sd(XMMRegister dst, Register src, Register tmp) { |
| 961 | Label msb_set_src; |
| 962 | Label jmp_return; |
| 963 | testq(src, src); |
| 964 | j(sign, &msb_set_src, Label::kNear); |
| 965 | Cvtqsi2sd(dst, src); |
| 966 | jmp(&jmp_return, Label::kNear); |
| 967 | bind(&msb_set_src); |
| 968 | movq(tmp, src); |
| 969 | shrq(src, Immediate(1)); |
| 970 | andq(tmp, Immediate(1)); |
| 971 | orq(src, tmp); |
| 972 | Cvtqsi2sd(dst, src); |
| 973 | addsd(dst, dst); |
| 974 | bind(&jmp_return); |
| 975 | } |
| 976 | |
| 977 | |
| 978 | void MacroAssembler::Cvtsd2si(Register dst, XMMRegister src) { |
| 979 | if (CpuFeatures::IsSupported(AVX)) { |
| 980 | CpuFeatureScope scope(this, AVX); |
| 981 | vcvtsd2si(dst, src); |
| 982 | } else { |
| 983 | cvtsd2si(dst, src); |
| 984 | } |
| 985 | } |
| 986 | |
| 987 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 988 | void MacroAssembler::Cvttss2si(Register dst, XMMRegister src) { |
| 989 | if (CpuFeatures::IsSupported(AVX)) { |
| 990 | CpuFeatureScope scope(this, AVX); |
| 991 | vcvttss2si(dst, src); |
| 992 | } else { |
| 993 | cvttss2si(dst, src); |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | |
| 998 | void MacroAssembler::Cvttss2si(Register dst, const Operand& src) { |
| 999 | if (CpuFeatures::IsSupported(AVX)) { |
| 1000 | CpuFeatureScope scope(this, AVX); |
| 1001 | vcvttss2si(dst, src); |
| 1002 | } else { |
| 1003 | cvttss2si(dst, src); |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1008 | void MacroAssembler::Cvttsd2si(Register dst, XMMRegister src) { |
| 1009 | if (CpuFeatures::IsSupported(AVX)) { |
| 1010 | CpuFeatureScope scope(this, AVX); |
| 1011 | vcvttsd2si(dst, src); |
| 1012 | } else { |
| 1013 | cvttsd2si(dst, src); |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | |
| 1018 | void MacroAssembler::Cvttsd2si(Register dst, const Operand& src) { |
| 1019 | if (CpuFeatures::IsSupported(AVX)) { |
| 1020 | CpuFeatureScope scope(this, AVX); |
| 1021 | vcvttsd2si(dst, src); |
| 1022 | } else { |
| 1023 | cvttsd2si(dst, src); |
| 1024 | } |
| 1025 | } |
| 1026 | |
| 1027 | |
| 1028 | void MacroAssembler::Cvttss2siq(Register dst, XMMRegister src) { |
| 1029 | if (CpuFeatures::IsSupported(AVX)) { |
| 1030 | CpuFeatureScope scope(this, AVX); |
| 1031 | vcvttss2siq(dst, src); |
| 1032 | } else { |
| 1033 | cvttss2siq(dst, src); |
| 1034 | } |
| 1035 | } |
| 1036 | |
| 1037 | |
| 1038 | void MacroAssembler::Cvttss2siq(Register dst, const Operand& src) { |
| 1039 | if (CpuFeatures::IsSupported(AVX)) { |
| 1040 | CpuFeatureScope scope(this, AVX); |
| 1041 | vcvttss2siq(dst, src); |
| 1042 | } else { |
| 1043 | cvttss2siq(dst, src); |
| 1044 | } |
| 1045 | } |
| 1046 | |
| 1047 | |
| 1048 | void MacroAssembler::Cvttsd2siq(Register dst, XMMRegister src) { |
| 1049 | if (CpuFeatures::IsSupported(AVX)) { |
| 1050 | CpuFeatureScope scope(this, AVX); |
| 1051 | vcvttsd2siq(dst, src); |
| 1052 | } else { |
| 1053 | cvttsd2siq(dst, src); |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | |
| 1058 | void MacroAssembler::Cvttsd2siq(Register dst, const Operand& src) { |
| 1059 | if (CpuFeatures::IsSupported(AVX)) { |
| 1060 | CpuFeatureScope scope(this, AVX); |
| 1061 | vcvttsd2siq(dst, src); |
| 1062 | } else { |
| 1063 | cvttsd2siq(dst, src); |
| 1064 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1065 | } |
| 1066 | |
| 1067 | |
| 1068 | void MacroAssembler::Load(Register dst, const Operand& src, Representation r) { |
| 1069 | DCHECK(!r.IsDouble()); |
| 1070 | if (r.IsInteger8()) { |
| 1071 | movsxbq(dst, src); |
| 1072 | } else if (r.IsUInteger8()) { |
| 1073 | movzxbl(dst, src); |
| 1074 | } else if (r.IsInteger16()) { |
| 1075 | movsxwq(dst, src); |
| 1076 | } else if (r.IsUInteger16()) { |
| 1077 | movzxwl(dst, src); |
| 1078 | } else if (r.IsInteger32()) { |
| 1079 | movl(dst, src); |
| 1080 | } else { |
| 1081 | movp(dst, src); |
| 1082 | } |
| 1083 | } |
| 1084 | |
| 1085 | |
| 1086 | void MacroAssembler::Store(const Operand& dst, Register src, Representation r) { |
| 1087 | DCHECK(!r.IsDouble()); |
| 1088 | if (r.IsInteger8() || r.IsUInteger8()) { |
| 1089 | movb(dst, src); |
| 1090 | } else if (r.IsInteger16() || r.IsUInteger16()) { |
| 1091 | movw(dst, src); |
| 1092 | } else if (r.IsInteger32()) { |
| 1093 | movl(dst, src); |
| 1094 | } else { |
| 1095 | if (r.IsHeapObject()) { |
| 1096 | AssertNotSmi(src); |
| 1097 | } else if (r.IsSmi()) { |
| 1098 | AssertSmi(src); |
| 1099 | } |
| 1100 | movp(dst, src); |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1105 | void MacroAssembler::Set(Register dst, int64_t x) { |
| 1106 | if (x == 0) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1107 | xorl(dst, dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1108 | } else if (is_uint32(x)) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1109 | movl(dst, Immediate(static_cast<uint32_t>(x))); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1110 | } else if (is_int32(x)) { |
| 1111 | movq(dst, Immediate(static_cast<int32_t>(x))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1112 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1113 | movq(dst, x); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1114 | } |
| 1115 | } |
| 1116 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1117 | |
| 1118 | void MacroAssembler::Set(const Operand& dst, intptr_t x) { |
| 1119 | if (kPointerSize == kInt64Size) { |
| 1120 | if (is_int32(x)) { |
| 1121 | movp(dst, Immediate(static_cast<int32_t>(x))); |
| 1122 | } else { |
| 1123 | Set(kScratchRegister, x); |
| 1124 | movp(dst, kScratchRegister); |
| 1125 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1126 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1127 | movp(dst, Immediate(static_cast<int32_t>(x))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1128 | } |
| 1129 | } |
| 1130 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1131 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1132 | // ---------------------------------------------------------------------------- |
| 1133 | // Smi tagging, untagging and tag detection. |
| 1134 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1135 | bool MacroAssembler::IsUnsafeInt(const int32_t x) { |
| 1136 | static const int kMaxBits = 17; |
| 1137 | return !is_intn(x, kMaxBits); |
| 1138 | } |
| 1139 | |
| 1140 | |
| 1141 | void MacroAssembler::SafeMove(Register dst, Smi* src) { |
| 1142 | DCHECK(!dst.is(kScratchRegister)); |
| 1143 | if (IsUnsafeInt(src->value()) && jit_cookie() != 0) { |
| 1144 | if (SmiValuesAre32Bits()) { |
| 1145 | // JIT cookie can be converted to Smi. |
| 1146 | Move(dst, Smi::FromInt(src->value() ^ jit_cookie())); |
| 1147 | Move(kScratchRegister, Smi::FromInt(jit_cookie())); |
| 1148 | xorp(dst, kScratchRegister); |
| 1149 | } else { |
| 1150 | DCHECK(SmiValuesAre31Bits()); |
| 1151 | int32_t value = static_cast<int32_t>(reinterpret_cast<intptr_t>(src)); |
| 1152 | movp(dst, Immediate(value ^ jit_cookie())); |
| 1153 | xorp(dst, Immediate(jit_cookie())); |
| 1154 | } |
| 1155 | } else { |
| 1156 | Move(dst, src); |
| 1157 | } |
| 1158 | } |
| 1159 | |
| 1160 | |
| 1161 | void MacroAssembler::SafePush(Smi* src) { |
| 1162 | if (IsUnsafeInt(src->value()) && jit_cookie() != 0) { |
| 1163 | if (SmiValuesAre32Bits()) { |
| 1164 | // JIT cookie can be converted to Smi. |
| 1165 | Push(Smi::FromInt(src->value() ^ jit_cookie())); |
| 1166 | Move(kScratchRegister, Smi::FromInt(jit_cookie())); |
| 1167 | xorp(Operand(rsp, 0), kScratchRegister); |
| 1168 | } else { |
| 1169 | DCHECK(SmiValuesAre31Bits()); |
| 1170 | int32_t value = static_cast<int32_t>(reinterpret_cast<intptr_t>(src)); |
| 1171 | Push(Immediate(value ^ jit_cookie())); |
| 1172 | xorp(Operand(rsp, 0), Immediate(jit_cookie())); |
| 1173 | } |
| 1174 | } else { |
| 1175 | Push(src); |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1180 | Register MacroAssembler::GetSmiConstant(Smi* source) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1181 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1182 | int value = source->value(); |
| 1183 | if (value == 0) { |
| 1184 | xorl(kScratchRegister, kScratchRegister); |
| 1185 | return kScratchRegister; |
| 1186 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1187 | LoadSmiConstant(kScratchRegister, source); |
| 1188 | return kScratchRegister; |
| 1189 | } |
| 1190 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1191 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1192 | void MacroAssembler::LoadSmiConstant(Register dst, Smi* source) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1193 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1194 | int value = source->value(); |
| 1195 | if (value == 0) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1196 | xorl(dst, dst); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1197 | } else { |
| 1198 | Move(dst, source, Assembler::RelocInfoNone()); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1199 | } |
| 1200 | } |
| 1201 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1202 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1203 | void MacroAssembler::Integer32ToSmi(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1204 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1205 | if (!dst.is(src)) { |
| 1206 | movl(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1207 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1208 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1209 | } |
| 1210 | |
| 1211 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1212 | void MacroAssembler::Integer32ToSmiField(const Operand& dst, Register src) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1213 | if (emit_debug_code()) { |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1214 | testb(dst, Immediate(0x01)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1215 | Label ok; |
| 1216 | j(zero, &ok, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1217 | Abort(kInteger32ToSmiFieldWritingToNonSmiLocation); |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1218 | bind(&ok); |
| 1219 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1220 | |
| 1221 | if (SmiValuesAre32Bits()) { |
| 1222 | DCHECK(kSmiShift % kBitsPerByte == 0); |
| 1223 | movl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1224 | } else { |
| 1225 | DCHECK(SmiValuesAre31Bits()); |
| 1226 | Integer32ToSmi(kScratchRegister, src); |
| 1227 | movp(dst, kScratchRegister); |
| 1228 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1232 | void MacroAssembler::Integer64PlusConstantToSmi(Register dst, |
| 1233 | Register src, |
| 1234 | int constant) { |
| 1235 | if (dst.is(src)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1236 | addl(dst, Immediate(constant)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1237 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1238 | leal(dst, Operand(src, constant)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1239 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1240 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1241 | } |
| 1242 | |
| 1243 | |
| 1244 | void MacroAssembler::SmiToInteger32(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1245 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1246 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1247 | movp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1248 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1249 | |
| 1250 | if (SmiValuesAre32Bits()) { |
| 1251 | shrp(dst, Immediate(kSmiShift)); |
| 1252 | } else { |
| 1253 | DCHECK(SmiValuesAre31Bits()); |
| 1254 | sarl(dst, Immediate(kSmiShift)); |
| 1255 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1256 | } |
| 1257 | |
| 1258 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1259 | void MacroAssembler::SmiToInteger32(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1260 | if (SmiValuesAre32Bits()) { |
| 1261 | movl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 1262 | } else { |
| 1263 | DCHECK(SmiValuesAre31Bits()); |
| 1264 | movl(dst, src); |
| 1265 | sarl(dst, Immediate(kSmiShift)); |
| 1266 | } |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1270 | void MacroAssembler::SmiToInteger64(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1271 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1272 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1273 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1274 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1275 | sarp(dst, Immediate(kSmiShift)); |
| 1276 | if (kPointerSize == kInt32Size) { |
| 1277 | // Sign extend to 64-bit. |
| 1278 | movsxlq(dst, dst); |
| 1279 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1280 | } |
| 1281 | |
| 1282 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1283 | void MacroAssembler::SmiToInteger64(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1284 | if (SmiValuesAre32Bits()) { |
| 1285 | movsxlq(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 1286 | } else { |
| 1287 | DCHECK(SmiValuesAre31Bits()); |
| 1288 | movp(dst, src); |
| 1289 | SmiToInteger64(dst, dst); |
| 1290 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1291 | } |
| 1292 | |
| 1293 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1294 | void MacroAssembler::SmiTest(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1295 | AssertSmi(src); |
| 1296 | testp(src, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1297 | } |
| 1298 | |
| 1299 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1300 | void MacroAssembler::SmiCompare(Register smi1, Register smi2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1301 | AssertSmi(smi1); |
| 1302 | AssertSmi(smi2); |
| 1303 | cmpp(smi1, smi2); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1304 | } |
| 1305 | |
| 1306 | |
| 1307 | void MacroAssembler::SmiCompare(Register dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1308 | AssertSmi(dst); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1309 | Cmp(dst, src); |
| 1310 | } |
| 1311 | |
| 1312 | |
| 1313 | void MacroAssembler::Cmp(Register dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1314 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1315 | if (src->value() == 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1316 | testp(dst, dst); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1317 | } else { |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 1318 | Register constant_reg = GetSmiConstant(src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1319 | cmpp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1320 | } |
| 1321 | } |
| 1322 | |
| 1323 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1324 | void MacroAssembler::SmiCompare(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1325 | AssertSmi(dst); |
| 1326 | AssertSmi(src); |
| 1327 | cmpp(dst, src); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1328 | } |
| 1329 | |
| 1330 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1331 | void MacroAssembler::SmiCompare(const Operand& dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1332 | AssertSmi(dst); |
| 1333 | AssertSmi(src); |
| 1334 | cmpp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1335 | } |
| 1336 | |
| 1337 | |
| 1338 | void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1339 | AssertSmi(dst); |
| 1340 | if (SmiValuesAre32Bits()) { |
| 1341 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value())); |
| 1342 | } else { |
| 1343 | DCHECK(SmiValuesAre31Bits()); |
| 1344 | cmpl(dst, Immediate(src)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1345 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1346 | } |
| 1347 | |
| 1348 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1349 | void MacroAssembler::Cmp(const Operand& dst, Smi* src) { |
| 1350 | // The Operand cannot use the smi register. |
| 1351 | Register smi_reg = GetSmiConstant(src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1352 | DCHECK(!dst.AddressUsesRegister(smi_reg)); |
| 1353 | cmpp(dst, smi_reg); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1354 | } |
| 1355 | |
| 1356 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1357 | void MacroAssembler::SmiCompareInteger32(const Operand& dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1358 | if (SmiValuesAre32Bits()) { |
| 1359 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1360 | } else { |
| 1361 | DCHECK(SmiValuesAre31Bits()); |
| 1362 | SmiToInteger32(kScratchRegister, dst); |
| 1363 | cmpl(kScratchRegister, src); |
| 1364 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1365 | } |
| 1366 | |
| 1367 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1368 | void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst, |
| 1369 | Register src, |
| 1370 | int power) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1371 | DCHECK(power >= 0); |
| 1372 | DCHECK(power < 64); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1373 | if (power == 0) { |
| 1374 | SmiToInteger64(dst, src); |
| 1375 | return; |
| 1376 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1377 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1378 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1379 | } |
| 1380 | if (power < kSmiShift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1381 | sarp(dst, Immediate(kSmiShift - power)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1382 | } else if (power > kSmiShift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1383 | shlp(dst, Immediate(power - kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1384 | } |
| 1385 | } |
| 1386 | |
| 1387 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1388 | void MacroAssembler::PositiveSmiDivPowerOfTwoToInteger32(Register dst, |
| 1389 | Register src, |
| 1390 | int power) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1391 | DCHECK((0 <= power) && (power < 32)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1392 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1393 | shrp(dst, Immediate(power + kSmiShift)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1394 | } else { |
| 1395 | UNIMPLEMENTED(); // Not used. |
| 1396 | } |
| 1397 | } |
| 1398 | |
| 1399 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1400 | void MacroAssembler::SmiOrIfSmis(Register dst, Register src1, Register src2, |
| 1401 | Label* on_not_smis, |
| 1402 | Label::Distance near_jump) { |
| 1403 | if (dst.is(src1) || dst.is(src2)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1404 | DCHECK(!src1.is(kScratchRegister)); |
| 1405 | DCHECK(!src2.is(kScratchRegister)); |
| 1406 | movp(kScratchRegister, src1); |
| 1407 | orp(kScratchRegister, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1408 | JumpIfNotSmi(kScratchRegister, on_not_smis, near_jump); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1409 | movp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1410 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1411 | movp(dst, src1); |
| 1412 | orp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1413 | JumpIfNotSmi(dst, on_not_smis, near_jump); |
| 1414 | } |
| 1415 | } |
| 1416 | |
| 1417 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1418 | Condition MacroAssembler::CheckSmi(Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1419 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1420 | testb(src, Immediate(kSmiTagMask)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1421 | return zero; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1425 | Condition MacroAssembler::CheckSmi(const Operand& src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1426 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1427 | testb(src, Immediate(kSmiTagMask)); |
| 1428 | return zero; |
| 1429 | } |
| 1430 | |
| 1431 | |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1432 | Condition MacroAssembler::CheckNonNegativeSmi(Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1433 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1434 | // Test that both bits of the mask 0x8000000000000001 are zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1435 | movp(kScratchRegister, src); |
| 1436 | rolp(kScratchRegister, Immediate(1)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1437 | testb(kScratchRegister, Immediate(3)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1438 | return zero; |
| 1439 | } |
| 1440 | |
| 1441 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1442 | Condition MacroAssembler::CheckBothSmi(Register first, Register second) { |
| 1443 | if (first.is(second)) { |
| 1444 | return CheckSmi(first); |
| 1445 | } |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1446 | STATIC_ASSERT(kSmiTag == 0 && kHeapObjectTag == 1 && kHeapObjectTagMask == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1447 | if (SmiValuesAre32Bits()) { |
| 1448 | leal(kScratchRegister, Operand(first, second, times_1, 0)); |
| 1449 | testb(kScratchRegister, Immediate(0x03)); |
| 1450 | } else { |
| 1451 | DCHECK(SmiValuesAre31Bits()); |
| 1452 | movl(kScratchRegister, first); |
| 1453 | orl(kScratchRegister, second); |
| 1454 | testb(kScratchRegister, Immediate(kSmiTagMask)); |
| 1455 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1456 | return zero; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1460 | Condition MacroAssembler::CheckBothNonNegativeSmi(Register first, |
| 1461 | Register second) { |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1462 | if (first.is(second)) { |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1463 | return CheckNonNegativeSmi(first); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1464 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1465 | movp(kScratchRegister, first); |
| 1466 | orp(kScratchRegister, second); |
| 1467 | rolp(kScratchRegister, Immediate(1)); |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1468 | testl(kScratchRegister, Immediate(3)); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1469 | return zero; |
| 1470 | } |
| 1471 | |
| 1472 | |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1473 | Condition MacroAssembler::CheckEitherSmi(Register first, |
| 1474 | Register second, |
| 1475 | Register scratch) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1476 | if (first.is(second)) { |
| 1477 | return CheckSmi(first); |
| 1478 | } |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1479 | if (scratch.is(second)) { |
| 1480 | andl(scratch, first); |
| 1481 | } else { |
| 1482 | if (!scratch.is(first)) { |
| 1483 | movl(scratch, first); |
| 1484 | } |
| 1485 | andl(scratch, second); |
| 1486 | } |
| 1487 | testb(scratch, Immediate(kSmiTagMask)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1488 | return zero; |
| 1489 | } |
| 1490 | |
| 1491 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1492 | Condition MacroAssembler::CheckInteger32ValidSmiValue(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1493 | if (SmiValuesAre32Bits()) { |
| 1494 | // A 32-bit integer value can always be converted to a smi. |
| 1495 | return always; |
| 1496 | } else { |
| 1497 | DCHECK(SmiValuesAre31Bits()); |
| 1498 | cmpl(src, Immediate(0xc0000000)); |
| 1499 | return positive; |
| 1500 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
| 1503 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1504 | Condition MacroAssembler::CheckUInteger32ValidSmiValue(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1505 | if (SmiValuesAre32Bits()) { |
| 1506 | // An unsigned 32-bit integer value is valid as long as the high bit |
| 1507 | // is not set. |
| 1508 | testl(src, src); |
| 1509 | return positive; |
| 1510 | } else { |
| 1511 | DCHECK(SmiValuesAre31Bits()); |
| 1512 | testl(src, Immediate(0xc0000000)); |
| 1513 | return zero; |
| 1514 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1515 | } |
| 1516 | |
| 1517 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1518 | void MacroAssembler::CheckSmiToIndicator(Register dst, Register src) { |
| 1519 | if (dst.is(src)) { |
| 1520 | andl(dst, Immediate(kSmiTagMask)); |
| 1521 | } else { |
| 1522 | movl(dst, Immediate(kSmiTagMask)); |
| 1523 | andl(dst, src); |
| 1524 | } |
| 1525 | } |
| 1526 | |
| 1527 | |
| 1528 | void MacroAssembler::CheckSmiToIndicator(Register dst, const Operand& src) { |
| 1529 | if (!(src.AddressUsesRegister(dst))) { |
| 1530 | movl(dst, Immediate(kSmiTagMask)); |
| 1531 | andl(dst, src); |
| 1532 | } else { |
| 1533 | movl(dst, src); |
| 1534 | andl(dst, Immediate(kSmiTagMask)); |
| 1535 | } |
| 1536 | } |
| 1537 | |
| 1538 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1539 | void MacroAssembler::JumpIfValidSmiValue(Register src, |
| 1540 | Label* on_valid, |
| 1541 | Label::Distance near_jump) { |
| 1542 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1543 | j(is_valid, on_valid, near_jump); |
| 1544 | } |
| 1545 | |
| 1546 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1547 | void MacroAssembler::JumpIfNotValidSmiValue(Register src, |
| 1548 | Label* on_invalid, |
| 1549 | Label::Distance near_jump) { |
| 1550 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1551 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1552 | } |
| 1553 | |
| 1554 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1555 | void MacroAssembler::JumpIfUIntValidSmiValue(Register src, |
| 1556 | Label* on_valid, |
| 1557 | Label::Distance near_jump) { |
| 1558 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1559 | j(is_valid, on_valid, near_jump); |
| 1560 | } |
| 1561 | |
| 1562 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1563 | void MacroAssembler::JumpIfUIntNotValidSmiValue(Register src, |
| 1564 | Label* on_invalid, |
| 1565 | Label::Distance near_jump) { |
| 1566 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1567 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1568 | } |
| 1569 | |
| 1570 | |
| 1571 | void MacroAssembler::JumpIfSmi(Register src, |
| 1572 | Label* on_smi, |
| 1573 | Label::Distance near_jump) { |
| 1574 | Condition smi = CheckSmi(src); |
| 1575 | j(smi, on_smi, near_jump); |
| 1576 | } |
| 1577 | |
| 1578 | |
| 1579 | void MacroAssembler::JumpIfNotSmi(Register src, |
| 1580 | Label* on_not_smi, |
| 1581 | Label::Distance near_jump) { |
| 1582 | Condition smi = CheckSmi(src); |
| 1583 | j(NegateCondition(smi), on_not_smi, near_jump); |
| 1584 | } |
| 1585 | |
| 1586 | |
| 1587 | void MacroAssembler::JumpUnlessNonNegativeSmi( |
| 1588 | Register src, Label* on_not_smi_or_negative, |
| 1589 | Label::Distance near_jump) { |
| 1590 | Condition non_negative_smi = CheckNonNegativeSmi(src); |
| 1591 | j(NegateCondition(non_negative_smi), on_not_smi_or_negative, near_jump); |
| 1592 | } |
| 1593 | |
| 1594 | |
| 1595 | void MacroAssembler::JumpIfSmiEqualsConstant(Register src, |
| 1596 | Smi* constant, |
| 1597 | Label* on_equals, |
| 1598 | Label::Distance near_jump) { |
| 1599 | SmiCompare(src, constant); |
| 1600 | j(equal, on_equals, near_jump); |
| 1601 | } |
| 1602 | |
| 1603 | |
| 1604 | void MacroAssembler::JumpIfNotBothSmi(Register src1, |
| 1605 | Register src2, |
| 1606 | Label* on_not_both_smi, |
| 1607 | Label::Distance near_jump) { |
| 1608 | Condition both_smi = CheckBothSmi(src1, src2); |
| 1609 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1610 | } |
| 1611 | |
| 1612 | |
| 1613 | void MacroAssembler::JumpUnlessBothNonNegativeSmi(Register src1, |
| 1614 | Register src2, |
| 1615 | Label* on_not_both_smi, |
| 1616 | Label::Distance near_jump) { |
| 1617 | Condition both_smi = CheckBothNonNegativeSmi(src1, src2); |
| 1618 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1619 | } |
| 1620 | |
| 1621 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1622 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) { |
| 1623 | if (constant->value() == 0) { |
| 1624 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1625 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1626 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1627 | return; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1628 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1629 | DCHECK(!dst.is(kScratchRegister)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1630 | Register constant_reg = GetSmiConstant(constant); |
| 1631 | addp(dst, constant_reg); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1632 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1633 | LoadSmiConstant(dst, constant); |
| 1634 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1635 | } |
| 1636 | } |
| 1637 | |
| 1638 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1639 | void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) { |
| 1640 | if (constant->value() != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1641 | if (SmiValuesAre32Bits()) { |
| 1642 | addl(Operand(dst, kSmiShift / kBitsPerByte), |
| 1643 | Immediate(constant->value())); |
| 1644 | } else { |
| 1645 | DCHECK(SmiValuesAre31Bits()); |
| 1646 | addp(dst, Immediate(constant)); |
| 1647 | } |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1648 | } |
| 1649 | } |
| 1650 | |
| 1651 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1652 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant, |
| 1653 | SmiOperationConstraints constraints, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1654 | Label* bailout_label, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1655 | Label::Distance near_jump) { |
| 1656 | if (constant->value() == 0) { |
| 1657 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1658 | movp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1659 | } |
| 1660 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1661 | DCHECK(!dst.is(kScratchRegister)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1662 | LoadSmiConstant(kScratchRegister, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1663 | addp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1664 | if (constraints & SmiOperationConstraint::kBailoutOnNoOverflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1665 | j(no_overflow, bailout_label, near_jump); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1666 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1667 | subp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1668 | } else if (constraints & SmiOperationConstraint::kBailoutOnOverflow) { |
| 1669 | if (constraints & SmiOperationConstraint::kPreserveSourceRegister) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1670 | Label done; |
| 1671 | j(no_overflow, &done, Label::kNear); |
| 1672 | subp(dst, kScratchRegister); |
| 1673 | jmp(bailout_label, near_jump); |
| 1674 | bind(&done); |
| 1675 | } else { |
| 1676 | // Bailout if overflow without reserving src. |
| 1677 | j(overflow, bailout_label, near_jump); |
| 1678 | } |
| 1679 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1680 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1681 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1682 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1683 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
| 1684 | DCHECK(constraints & SmiOperationConstraint::kBailoutOnOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1685 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1686 | addp(dst, src); |
| 1687 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1688 | } |
| 1689 | } |
| 1690 | |
| 1691 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1692 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant) { |
| 1693 | if (constant->value() == 0) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1694 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1695 | movp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1696 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1697 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1698 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1699 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1700 | subp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1701 | } else { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1702 | if (constant->value() == Smi::kMinValue) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1703 | LoadSmiConstant(dst, constant); |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1704 | // Adding and subtracting the min-value gives the same result, it only |
| 1705 | // differs on the overflow bit, which we don't check here. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1706 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1707 | } else { |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1708 | // Subtract by adding the negation. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1709 | LoadSmiConstant(dst, Smi::FromInt(-constant->value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1710 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1711 | } |
| 1712 | } |
| 1713 | } |
| 1714 | |
| 1715 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1716 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant, |
| 1717 | SmiOperationConstraints constraints, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1718 | Label* bailout_label, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1719 | Label::Distance near_jump) { |
| 1720 | if (constant->value() == 0) { |
| 1721 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1722 | movp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1723 | } |
| 1724 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1725 | DCHECK(!dst.is(kScratchRegister)); |
| 1726 | LoadSmiConstant(kScratchRegister, constant); |
| 1727 | subp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1728 | if (constraints & SmiOperationConstraint::kBailoutOnNoOverflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1729 | j(no_overflow, bailout_label, near_jump); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1730 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1731 | addp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1732 | } else if (constraints & SmiOperationConstraint::kBailoutOnOverflow) { |
| 1733 | if (constraints & SmiOperationConstraint::kPreserveSourceRegister) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1734 | Label done; |
| 1735 | j(no_overflow, &done, Label::kNear); |
| 1736 | addp(dst, kScratchRegister); |
| 1737 | jmp(bailout_label, near_jump); |
| 1738 | bind(&done); |
| 1739 | } else { |
| 1740 | // Bailout if overflow without reserving src. |
| 1741 | j(overflow, bailout_label, near_jump); |
| 1742 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1743 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1744 | UNREACHABLE(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1745 | } |
| 1746 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1747 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
| 1748 | DCHECK(constraints & SmiOperationConstraint::kBailoutOnOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1749 | if (constant->value() == Smi::kMinValue) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1750 | DCHECK(!dst.is(kScratchRegister)); |
| 1751 | movp(dst, src); |
| 1752 | LoadSmiConstant(kScratchRegister, constant); |
| 1753 | subp(dst, kScratchRegister); |
| 1754 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1755 | } else { |
| 1756 | // Subtract by adding the negation. |
| 1757 | LoadSmiConstant(dst, Smi::FromInt(-(constant->value()))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1758 | addp(dst, src); |
| 1759 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1760 | } |
| 1761 | } |
| 1762 | } |
| 1763 | |
| 1764 | |
| 1765 | void MacroAssembler::SmiNeg(Register dst, |
| 1766 | Register src, |
| 1767 | Label* on_smi_result, |
| 1768 | Label::Distance near_jump) { |
| 1769 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1770 | DCHECK(!dst.is(kScratchRegister)); |
| 1771 | movp(kScratchRegister, src); |
| 1772 | negp(dst); // Low 32 bits are retained as zero by negation. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1773 | // Test if result is zero or Smi::kMinValue. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1774 | cmpp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1775 | j(not_equal, on_smi_result, near_jump); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1776 | movp(src, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1777 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1778 | movp(dst, src); |
| 1779 | negp(dst); |
| 1780 | cmpp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1781 | // If the result is zero or Smi::kMinValue, negation failed to create a smi. |
| 1782 | j(not_equal, on_smi_result, near_jump); |
| 1783 | } |
| 1784 | } |
| 1785 | |
| 1786 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1787 | template<class T> |
| 1788 | static void SmiAddHelper(MacroAssembler* masm, |
| 1789 | Register dst, |
| 1790 | Register src1, |
| 1791 | T src2, |
| 1792 | Label* on_not_smi_result, |
| 1793 | Label::Distance near_jump) { |
| 1794 | if (dst.is(src1)) { |
| 1795 | Label done; |
| 1796 | masm->addp(dst, src2); |
| 1797 | masm->j(no_overflow, &done, Label::kNear); |
| 1798 | // Restore src1. |
| 1799 | masm->subp(dst, src2); |
| 1800 | masm->jmp(on_not_smi_result, near_jump); |
| 1801 | masm->bind(&done); |
| 1802 | } else { |
| 1803 | masm->movp(dst, src1); |
| 1804 | masm->addp(dst, src2); |
| 1805 | masm->j(overflow, on_not_smi_result, near_jump); |
| 1806 | } |
| 1807 | } |
| 1808 | |
| 1809 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1810 | void MacroAssembler::SmiAdd(Register dst, |
| 1811 | Register src1, |
| 1812 | Register src2, |
| 1813 | Label* on_not_smi_result, |
| 1814 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1815 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1816 | DCHECK(!dst.is(src2)); |
| 1817 | SmiAddHelper<Register>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1818 | } |
| 1819 | |
| 1820 | |
| 1821 | void MacroAssembler::SmiAdd(Register dst, |
| 1822 | Register src1, |
| 1823 | const Operand& src2, |
| 1824 | Label* on_not_smi_result, |
| 1825 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1826 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1827 | DCHECK(!src2.AddressUsesRegister(dst)); |
| 1828 | SmiAddHelper<Operand>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1829 | } |
| 1830 | |
| 1831 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1832 | void MacroAssembler::SmiAdd(Register dst, |
| 1833 | Register src1, |
| 1834 | Register src2) { |
| 1835 | // No overflow checking. Use only when it's known that |
| 1836 | // overflowing is impossible. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1837 | if (!dst.is(src1)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1838 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1839 | movp(kScratchRegister, src1); |
| 1840 | addp(kScratchRegister, src2); |
| 1841 | Check(no_overflow, kSmiAdditionOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1842 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1843 | leap(dst, Operand(src1, src2, times_1, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1844 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1845 | addp(dst, src2); |
| 1846 | Assert(no_overflow, kSmiAdditionOverflow); |
| 1847 | } |
| 1848 | } |
| 1849 | |
| 1850 | |
| 1851 | template<class T> |
| 1852 | static void SmiSubHelper(MacroAssembler* masm, |
| 1853 | Register dst, |
| 1854 | Register src1, |
| 1855 | T src2, |
| 1856 | Label* on_not_smi_result, |
| 1857 | Label::Distance near_jump) { |
| 1858 | if (dst.is(src1)) { |
| 1859 | Label done; |
| 1860 | masm->subp(dst, src2); |
| 1861 | masm->j(no_overflow, &done, Label::kNear); |
| 1862 | // Restore src1. |
| 1863 | masm->addp(dst, src2); |
| 1864 | masm->jmp(on_not_smi_result, near_jump); |
| 1865 | masm->bind(&done); |
| 1866 | } else { |
| 1867 | masm->movp(dst, src1); |
| 1868 | masm->subp(dst, src2); |
| 1869 | masm->j(overflow, on_not_smi_result, near_jump); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1870 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1871 | } |
| 1872 | |
| 1873 | |
| 1874 | void MacroAssembler::SmiSub(Register dst, |
| 1875 | Register src1, |
| 1876 | Register src2, |
| 1877 | Label* on_not_smi_result, |
| 1878 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1879 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1880 | DCHECK(!dst.is(src2)); |
| 1881 | SmiSubHelper<Register>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1882 | } |
| 1883 | |
| 1884 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1885 | void MacroAssembler::SmiSub(Register dst, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1886 | Register src1, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1887 | const Operand& src2, |
| 1888 | Label* on_not_smi_result, |
| 1889 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1890 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1891 | DCHECK(!src2.AddressUsesRegister(dst)); |
| 1892 | SmiSubHelper<Operand>(this, dst, src1, src2, on_not_smi_result, near_jump); |
| 1893 | } |
| 1894 | |
| 1895 | |
| 1896 | template<class T> |
| 1897 | static void SmiSubNoOverflowHelper(MacroAssembler* masm, |
| 1898 | Register dst, |
| 1899 | Register src1, |
| 1900 | T src2) { |
| 1901 | // No overflow checking. Use only when it's known that |
| 1902 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1903 | if (!dst.is(src1)) { |
| 1904 | masm->movp(dst, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1905 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1906 | masm->subp(dst, src2); |
| 1907 | masm->Assert(no_overflow, kSmiSubtractionOverflow); |
| 1908 | } |
| 1909 | |
| 1910 | |
| 1911 | void MacroAssembler::SmiSub(Register dst, Register src1, Register src2) { |
| 1912 | DCHECK(!dst.is(src2)); |
| 1913 | SmiSubNoOverflowHelper<Register>(this, dst, src1, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1914 | } |
| 1915 | |
| 1916 | |
| 1917 | void MacroAssembler::SmiSub(Register dst, |
| 1918 | Register src1, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1919 | const Operand& src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1920 | SmiSubNoOverflowHelper<Operand>(this, dst, src1, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1921 | } |
| 1922 | |
| 1923 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1924 | void MacroAssembler::SmiMul(Register dst, |
| 1925 | Register src1, |
| 1926 | Register src2, |
| 1927 | Label* on_not_smi_result, |
| 1928 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1929 | DCHECK(!dst.is(src2)); |
| 1930 | DCHECK(!dst.is(kScratchRegister)); |
| 1931 | DCHECK(!src1.is(kScratchRegister)); |
| 1932 | DCHECK(!src2.is(kScratchRegister)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1933 | |
| 1934 | if (dst.is(src1)) { |
| 1935 | Label failure, zero_correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1936 | movp(kScratchRegister, src1); // Create backup for later testing. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1937 | SmiToInteger64(dst, src1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1938 | imulp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1939 | j(overflow, &failure, Label::kNear); |
| 1940 | |
| 1941 | // Check for negative zero result. If product is zero, and one |
| 1942 | // argument is negative, go to slow case. |
| 1943 | Label correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1944 | testp(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1945 | j(not_zero, &correct_result, Label::kNear); |
| 1946 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1947 | movp(dst, kScratchRegister); |
| 1948 | xorp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1949 | // Result was positive zero. |
| 1950 | j(positive, &zero_correct_result, Label::kNear); |
| 1951 | |
| 1952 | bind(&failure); // Reused failure exit, restores src1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1953 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1954 | jmp(on_not_smi_result, near_jump); |
| 1955 | |
| 1956 | bind(&zero_correct_result); |
| 1957 | Set(dst, 0); |
| 1958 | |
| 1959 | bind(&correct_result); |
| 1960 | } else { |
| 1961 | SmiToInteger64(dst, src1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1962 | imulp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1963 | j(overflow, on_not_smi_result, near_jump); |
| 1964 | // Check for negative zero result. If product is zero, and one |
| 1965 | // argument is negative, go to slow case. |
| 1966 | Label correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1967 | testp(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1968 | j(not_zero, &correct_result, Label::kNear); |
| 1969 | // One of src1 and src2 is zero, the check whether the other is |
| 1970 | // negative. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1971 | movp(kScratchRegister, src1); |
| 1972 | xorp(kScratchRegister, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1973 | j(negative, on_not_smi_result, near_jump); |
| 1974 | bind(&correct_result); |
| 1975 | } |
| 1976 | } |
| 1977 | |
| 1978 | |
| 1979 | void MacroAssembler::SmiDiv(Register dst, |
| 1980 | Register src1, |
| 1981 | Register src2, |
| 1982 | Label* on_not_smi_result, |
| 1983 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1984 | DCHECK(!src1.is(kScratchRegister)); |
| 1985 | DCHECK(!src2.is(kScratchRegister)); |
| 1986 | DCHECK(!dst.is(kScratchRegister)); |
| 1987 | DCHECK(!src2.is(rax)); |
| 1988 | DCHECK(!src2.is(rdx)); |
| 1989 | DCHECK(!src1.is(rdx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1990 | |
| 1991 | // Check for 0 divisor (result is +/-Infinity). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1992 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1993 | j(zero, on_not_smi_result, near_jump); |
| 1994 | |
| 1995 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1996 | movp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1997 | } |
| 1998 | SmiToInteger32(rax, src1); |
| 1999 | // We need to rule out dividing Smi::kMinValue by -1, since that would |
| 2000 | // overflow in idiv and raise an exception. |
| 2001 | // We combine this with negative zero test (negative zero only happens |
| 2002 | // when dividing zero by a negative number). |
| 2003 | |
| 2004 | // We overshoot a little and go to slow case if we divide min-value |
| 2005 | // by any negative value, not just -1. |
| 2006 | Label safe_div; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2007 | testl(rax, Immediate(~Smi::kMinValue)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2008 | j(not_zero, &safe_div, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2009 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2010 | if (src1.is(rax)) { |
| 2011 | j(positive, &safe_div, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2012 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2013 | jmp(on_not_smi_result, near_jump); |
| 2014 | } else { |
| 2015 | j(negative, on_not_smi_result, near_jump); |
| 2016 | } |
| 2017 | bind(&safe_div); |
| 2018 | |
| 2019 | SmiToInteger32(src2, src2); |
| 2020 | // Sign extend src1 into edx:eax. |
| 2021 | cdq(); |
| 2022 | idivl(src2); |
| 2023 | Integer32ToSmi(src2, src2); |
| 2024 | // Check that the remainder is zero. |
| 2025 | testl(rdx, rdx); |
| 2026 | if (src1.is(rax)) { |
| 2027 | Label smi_result; |
| 2028 | j(zero, &smi_result, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2029 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2030 | jmp(on_not_smi_result, near_jump); |
| 2031 | bind(&smi_result); |
| 2032 | } else { |
| 2033 | j(not_zero, on_not_smi_result, near_jump); |
| 2034 | } |
| 2035 | if (!dst.is(src1) && src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2036 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2037 | } |
| 2038 | Integer32ToSmi(dst, rax); |
| 2039 | } |
| 2040 | |
| 2041 | |
| 2042 | void MacroAssembler::SmiMod(Register dst, |
| 2043 | Register src1, |
| 2044 | Register src2, |
| 2045 | Label* on_not_smi_result, |
| 2046 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2047 | DCHECK(!dst.is(kScratchRegister)); |
| 2048 | DCHECK(!src1.is(kScratchRegister)); |
| 2049 | DCHECK(!src2.is(kScratchRegister)); |
| 2050 | DCHECK(!src2.is(rax)); |
| 2051 | DCHECK(!src2.is(rdx)); |
| 2052 | DCHECK(!src1.is(rdx)); |
| 2053 | DCHECK(!src1.is(src2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2054 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2055 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2056 | j(zero, on_not_smi_result, near_jump); |
| 2057 | |
| 2058 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2059 | movp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2060 | } |
| 2061 | SmiToInteger32(rax, src1); |
| 2062 | SmiToInteger32(src2, src2); |
| 2063 | |
| 2064 | // Test for the edge case of dividing Smi::kMinValue by -1 (will overflow). |
| 2065 | Label safe_div; |
| 2066 | cmpl(rax, Immediate(Smi::kMinValue)); |
| 2067 | j(not_equal, &safe_div, Label::kNear); |
| 2068 | cmpl(src2, Immediate(-1)); |
| 2069 | j(not_equal, &safe_div, Label::kNear); |
| 2070 | // Retag inputs and go slow case. |
| 2071 | Integer32ToSmi(src2, src2); |
| 2072 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2073 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2074 | } |
| 2075 | jmp(on_not_smi_result, near_jump); |
| 2076 | bind(&safe_div); |
| 2077 | |
| 2078 | // Sign extend eax into edx:eax. |
| 2079 | cdq(); |
| 2080 | idivl(src2); |
| 2081 | // Restore smi tags on inputs. |
| 2082 | Integer32ToSmi(src2, src2); |
| 2083 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2084 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2085 | } |
| 2086 | // Check for a negative zero result. If the result is zero, and the |
| 2087 | // dividend is negative, go slow to return a floating point negative zero. |
| 2088 | Label smi_result; |
| 2089 | testl(rdx, rdx); |
| 2090 | j(not_zero, &smi_result, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2091 | testp(src1, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2092 | j(negative, on_not_smi_result, near_jump); |
| 2093 | bind(&smi_result); |
| 2094 | Integer32ToSmi(dst, rdx); |
| 2095 | } |
| 2096 | |
| 2097 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2098 | void MacroAssembler::SmiNot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2099 | DCHECK(!dst.is(kScratchRegister)); |
| 2100 | DCHECK(!src.is(kScratchRegister)); |
| 2101 | if (SmiValuesAre32Bits()) { |
| 2102 | // Set tag and padding bits before negating, so that they are zero |
| 2103 | // afterwards. |
| 2104 | movl(kScratchRegister, Immediate(~0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2105 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2106 | DCHECK(SmiValuesAre31Bits()); |
| 2107 | movl(kScratchRegister, Immediate(1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2108 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2109 | if (dst.is(src)) { |
| 2110 | xorp(dst, kScratchRegister); |
| 2111 | } else { |
| 2112 | leap(dst, Operand(src, kScratchRegister, times_1, 0)); |
| 2113 | } |
| 2114 | notp(dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2115 | } |
| 2116 | |
| 2117 | |
| 2118 | void MacroAssembler::SmiAnd(Register dst, Register src1, Register src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2119 | DCHECK(!dst.is(src2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2120 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2121 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2122 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2123 | andp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2124 | } |
| 2125 | |
| 2126 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2127 | void MacroAssembler::SmiAndConstant(Register dst, Register src, Smi* constant) { |
| 2128 | if (constant->value() == 0) { |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 2129 | Set(dst, 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2130 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2131 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2132 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2133 | andp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2134 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2135 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2136 | andp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2137 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2138 | } |
| 2139 | |
| 2140 | |
| 2141 | void MacroAssembler::SmiOr(Register dst, Register src1, Register src2) { |
| 2142 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2143 | DCHECK(!src1.is(src2)); |
| 2144 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2145 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2146 | orp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2147 | } |
| 2148 | |
| 2149 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2150 | void MacroAssembler::SmiOrConstant(Register dst, Register src, Smi* constant) { |
| 2151 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2152 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2153 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2154 | orp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2155 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2156 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2157 | orp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2158 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2159 | } |
| 2160 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2161 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2162 | void MacroAssembler::SmiXor(Register dst, Register src1, Register src2) { |
| 2163 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2164 | DCHECK(!src1.is(src2)); |
| 2165 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2166 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2167 | xorp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2168 | } |
| 2169 | |
| 2170 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2171 | void MacroAssembler::SmiXorConstant(Register dst, Register src, Smi* constant) { |
| 2172 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2173 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2174 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2175 | xorp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2176 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2177 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2178 | xorp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2179 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2180 | } |
| 2181 | |
| 2182 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2183 | void MacroAssembler::SmiShiftArithmeticRightConstant(Register dst, |
| 2184 | Register src, |
| 2185 | int shift_value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2186 | DCHECK(is_uint5(shift_value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2187 | if (shift_value > 0) { |
| 2188 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2189 | sarp(dst, Immediate(shift_value + kSmiShift)); |
| 2190 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2191 | } else { |
| 2192 | UNIMPLEMENTED(); // Not used. |
| 2193 | } |
| 2194 | } |
| 2195 | } |
| 2196 | |
| 2197 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2198 | void MacroAssembler::SmiShiftLeftConstant(Register dst, |
| 2199 | Register src, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2200 | int shift_value, |
| 2201 | Label* on_not_smi_result, |
| 2202 | Label::Distance near_jump) { |
| 2203 | if (SmiValuesAre32Bits()) { |
| 2204 | if (!dst.is(src)) { |
| 2205 | movp(dst, src); |
| 2206 | } |
| 2207 | if (shift_value > 0) { |
| 2208 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 2209 | shlq(dst, Immediate(shift_value & 0x1f)); |
| 2210 | } |
| 2211 | } else { |
| 2212 | DCHECK(SmiValuesAre31Bits()); |
| 2213 | if (dst.is(src)) { |
| 2214 | UNIMPLEMENTED(); // Not used. |
| 2215 | } else { |
| 2216 | SmiToInteger32(dst, src); |
| 2217 | shll(dst, Immediate(shift_value)); |
| 2218 | JumpIfNotValidSmiValue(dst, on_not_smi_result, near_jump); |
| 2219 | Integer32ToSmi(dst, dst); |
| 2220 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2221 | } |
| 2222 | } |
| 2223 | |
| 2224 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2225 | void MacroAssembler::SmiShiftLogicalRightConstant( |
| 2226 | Register dst, Register src, int shift_value, |
| 2227 | Label* on_not_smi_result, Label::Distance near_jump) { |
| 2228 | // Logic right shift interprets its result as an *unsigned* number. |
| 2229 | if (dst.is(src)) { |
| 2230 | UNIMPLEMENTED(); // Not used. |
| 2231 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2232 | if (shift_value == 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2233 | testp(src, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2234 | j(negative, on_not_smi_result, near_jump); |
| 2235 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2236 | if (SmiValuesAre32Bits()) { |
| 2237 | movp(dst, src); |
| 2238 | shrp(dst, Immediate(shift_value + kSmiShift)); |
| 2239 | shlp(dst, Immediate(kSmiShift)); |
| 2240 | } else { |
| 2241 | DCHECK(SmiValuesAre31Bits()); |
| 2242 | SmiToInteger32(dst, src); |
| 2243 | shrp(dst, Immediate(shift_value)); |
| 2244 | JumpIfUIntNotValidSmiValue(dst, on_not_smi_result, near_jump); |
| 2245 | Integer32ToSmi(dst, dst); |
| 2246 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2247 | } |
| 2248 | } |
| 2249 | |
| 2250 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2251 | void MacroAssembler::SmiShiftLeft(Register dst, |
| 2252 | Register src1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2253 | Register src2, |
| 2254 | Label* on_not_smi_result, |
| 2255 | Label::Distance near_jump) { |
| 2256 | if (SmiValuesAre32Bits()) { |
| 2257 | DCHECK(!dst.is(rcx)); |
| 2258 | if (!dst.is(src1)) { |
| 2259 | movp(dst, src1); |
| 2260 | } |
| 2261 | // Untag shift amount. |
| 2262 | SmiToInteger32(rcx, src2); |
| 2263 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 2264 | andp(rcx, Immediate(0x1f)); |
| 2265 | shlq_cl(dst); |
| 2266 | } else { |
| 2267 | DCHECK(SmiValuesAre31Bits()); |
| 2268 | DCHECK(!dst.is(kScratchRegister)); |
| 2269 | DCHECK(!src1.is(kScratchRegister)); |
| 2270 | DCHECK(!src2.is(kScratchRegister)); |
| 2271 | DCHECK(!dst.is(src2)); |
| 2272 | DCHECK(!dst.is(rcx)); |
| 2273 | |
| 2274 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2275 | movq(kScratchRegister, rcx); |
| 2276 | } |
| 2277 | if (dst.is(src1)) { |
| 2278 | UNIMPLEMENTED(); // Not used. |
| 2279 | } else { |
| 2280 | Label valid_result; |
| 2281 | SmiToInteger32(dst, src1); |
| 2282 | SmiToInteger32(rcx, src2); |
| 2283 | shll_cl(dst); |
| 2284 | JumpIfValidSmiValue(dst, &valid_result, Label::kNear); |
| 2285 | // As src1 or src2 could not be dst, we do not need to restore them for |
| 2286 | // clobbering dst. |
| 2287 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2288 | if (src1.is(rcx)) { |
| 2289 | movq(src1, kScratchRegister); |
| 2290 | } else { |
| 2291 | movq(src2, kScratchRegister); |
| 2292 | } |
| 2293 | } |
| 2294 | jmp(on_not_smi_result, near_jump); |
| 2295 | bind(&valid_result); |
| 2296 | Integer32ToSmi(dst, dst); |
| 2297 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2298 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2299 | } |
| 2300 | |
| 2301 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2302 | void MacroAssembler::SmiShiftLogicalRight(Register dst, |
| 2303 | Register src1, |
| 2304 | Register src2, |
| 2305 | Label* on_not_smi_result, |
| 2306 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2307 | DCHECK(!dst.is(kScratchRegister)); |
| 2308 | DCHECK(!src1.is(kScratchRegister)); |
| 2309 | DCHECK(!src2.is(kScratchRegister)); |
| 2310 | DCHECK(!dst.is(src2)); |
| 2311 | DCHECK(!dst.is(rcx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2312 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2313 | movq(kScratchRegister, rcx); |
| 2314 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2315 | if (dst.is(src1)) { |
| 2316 | UNIMPLEMENTED(); // Not used. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2317 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2318 | Label valid_result; |
| 2319 | SmiToInteger32(dst, src1); |
| 2320 | SmiToInteger32(rcx, src2); |
| 2321 | shrl_cl(dst); |
| 2322 | JumpIfUIntValidSmiValue(dst, &valid_result, Label::kNear); |
| 2323 | // As src1 or src2 could not be dst, we do not need to restore them for |
| 2324 | // clobbering dst. |
| 2325 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2326 | if (src1.is(rcx)) { |
| 2327 | movq(src1, kScratchRegister); |
| 2328 | } else { |
| 2329 | movq(src2, kScratchRegister); |
| 2330 | } |
| 2331 | } |
| 2332 | jmp(on_not_smi_result, near_jump); |
| 2333 | bind(&valid_result); |
| 2334 | Integer32ToSmi(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2335 | } |
| 2336 | } |
| 2337 | |
| 2338 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2339 | void MacroAssembler::SmiShiftArithmeticRight(Register dst, |
| 2340 | Register src1, |
| 2341 | Register src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2342 | DCHECK(!dst.is(kScratchRegister)); |
| 2343 | DCHECK(!src1.is(kScratchRegister)); |
| 2344 | DCHECK(!src2.is(kScratchRegister)); |
| 2345 | DCHECK(!dst.is(rcx)); |
| 2346 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2347 | SmiToInteger32(rcx, src2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2348 | if (!dst.is(src1)) { |
| 2349 | movp(dst, src1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2350 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2351 | SmiToInteger32(dst, dst); |
| 2352 | sarl_cl(dst); |
| 2353 | Integer32ToSmi(dst, dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2354 | } |
| 2355 | |
| 2356 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2357 | void MacroAssembler::SelectNonSmi(Register dst, |
| 2358 | Register src1, |
| 2359 | Register src2, |
| 2360 | Label* on_not_smis, |
| 2361 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2362 | DCHECK(!dst.is(kScratchRegister)); |
| 2363 | DCHECK(!src1.is(kScratchRegister)); |
| 2364 | DCHECK(!src2.is(kScratchRegister)); |
| 2365 | DCHECK(!dst.is(src1)); |
| 2366 | DCHECK(!dst.is(src2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2367 | // Both operands must not be smis. |
| 2368 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2369 | Condition not_both_smis = NegateCondition(CheckBothSmi(src1, src2)); |
| 2370 | Check(not_both_smis, kBothRegistersWereSmisInSelectNonSmi); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2371 | #endif |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2372 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2373 | DCHECK_EQ(static_cast<Smi*>(0), Smi::FromInt(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2374 | movl(kScratchRegister, Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2375 | andp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2376 | testl(kScratchRegister, src2); |
| 2377 | // If non-zero then both are smis. |
| 2378 | j(not_zero, on_not_smis, near_jump); |
| 2379 | |
| 2380 | // Exactly one operand is a smi. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2381 | DCHECK_EQ(1, static_cast<int>(kSmiTagMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2382 | // kScratchRegister still holds src1 & kSmiTag, which is either zero or one. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2383 | subp(kScratchRegister, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2384 | // 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] | 2385 | movp(dst, src1); |
| 2386 | xorp(dst, src2); |
| 2387 | andp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2388 | // 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] | 2389 | xorp(dst, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2390 | // If src1 is a smi, dst is src2, else it is src1, i.e., the non-smi. |
| 2391 | } |
| 2392 | |
| 2393 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2394 | SmiIndex MacroAssembler::SmiToIndex(Register dst, |
| 2395 | Register src, |
| 2396 | int shift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2397 | if (SmiValuesAre32Bits()) { |
| 2398 | DCHECK(is_uint6(shift)); |
| 2399 | // There is a possible optimization if shift is in the range 60-63, but that |
| 2400 | // will (and must) never happen. |
| 2401 | if (!dst.is(src)) { |
| 2402 | movp(dst, src); |
| 2403 | } |
| 2404 | if (shift < kSmiShift) { |
| 2405 | sarp(dst, Immediate(kSmiShift - shift)); |
| 2406 | } else { |
| 2407 | shlp(dst, Immediate(shift - kSmiShift)); |
| 2408 | } |
| 2409 | return SmiIndex(dst, times_1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2410 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2411 | DCHECK(SmiValuesAre31Bits()); |
| 2412 | DCHECK(shift >= times_1 && shift <= (static_cast<int>(times_8) + 1)); |
| 2413 | if (!dst.is(src)) { |
| 2414 | movp(dst, src); |
| 2415 | } |
| 2416 | // We have to sign extend the index register to 64-bit as the SMI might |
| 2417 | // be negative. |
| 2418 | movsxlq(dst, dst); |
| 2419 | if (shift == times_1) { |
| 2420 | sarq(dst, Immediate(kSmiShift)); |
| 2421 | return SmiIndex(dst, times_1); |
| 2422 | } |
| 2423 | return SmiIndex(dst, static_cast<ScaleFactor>(shift - 1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2424 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2425 | } |
| 2426 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2427 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2428 | SmiIndex MacroAssembler::SmiToNegativeIndex(Register dst, |
| 2429 | Register src, |
| 2430 | int shift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2431 | if (SmiValuesAre32Bits()) { |
| 2432 | // Register src holds a positive smi. |
| 2433 | DCHECK(is_uint6(shift)); |
| 2434 | if (!dst.is(src)) { |
| 2435 | movp(dst, src); |
| 2436 | } |
| 2437 | negp(dst); |
| 2438 | if (shift < kSmiShift) { |
| 2439 | sarp(dst, Immediate(kSmiShift - shift)); |
| 2440 | } else { |
| 2441 | shlp(dst, Immediate(shift - kSmiShift)); |
| 2442 | } |
| 2443 | return SmiIndex(dst, times_1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2444 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2445 | DCHECK(SmiValuesAre31Bits()); |
| 2446 | DCHECK(shift >= times_1 && shift <= (static_cast<int>(times_8) + 1)); |
| 2447 | if (!dst.is(src)) { |
| 2448 | movp(dst, src); |
| 2449 | } |
| 2450 | negq(dst); |
| 2451 | if (shift == times_1) { |
| 2452 | sarq(dst, Immediate(kSmiShift)); |
| 2453 | return SmiIndex(dst, times_1); |
| 2454 | } |
| 2455 | return SmiIndex(dst, static_cast<ScaleFactor>(shift - 1)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2456 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2457 | } |
| 2458 | |
| 2459 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2460 | void MacroAssembler::AddSmiField(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2461 | if (SmiValuesAre32Bits()) { |
| 2462 | DCHECK_EQ(0, kSmiShift % kBitsPerByte); |
| 2463 | addl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 2464 | } else { |
| 2465 | DCHECK(SmiValuesAre31Bits()); |
| 2466 | SmiToInteger32(kScratchRegister, src); |
| 2467 | addl(dst, kScratchRegister); |
| 2468 | } |
| 2469 | } |
| 2470 | |
| 2471 | |
| 2472 | void MacroAssembler::Push(Smi* source) { |
| 2473 | intptr_t smi = reinterpret_cast<intptr_t>(source); |
| 2474 | if (is_int32(smi)) { |
| 2475 | Push(Immediate(static_cast<int32_t>(smi))); |
| 2476 | } else { |
| 2477 | Register constant = GetSmiConstant(source); |
| 2478 | Push(constant); |
| 2479 | } |
| 2480 | } |
| 2481 | |
| 2482 | |
| 2483 | void MacroAssembler::PushRegisterAsTwoSmis(Register src, Register scratch) { |
| 2484 | DCHECK(!src.is(scratch)); |
| 2485 | movp(scratch, src); |
| 2486 | // High bits. |
| 2487 | shrp(src, Immediate(kPointerSize * kBitsPerByte - kSmiShift)); |
| 2488 | shlp(src, Immediate(kSmiShift)); |
| 2489 | Push(src); |
| 2490 | // Low bits. |
| 2491 | shlp(scratch, Immediate(kSmiShift)); |
| 2492 | Push(scratch); |
| 2493 | } |
| 2494 | |
| 2495 | |
| 2496 | void MacroAssembler::PopRegisterAsTwoSmis(Register dst, Register scratch) { |
| 2497 | DCHECK(!dst.is(scratch)); |
| 2498 | Pop(scratch); |
| 2499 | // Low bits. |
| 2500 | shrp(scratch, Immediate(kSmiShift)); |
| 2501 | Pop(dst); |
| 2502 | shrp(dst, Immediate(kSmiShift)); |
| 2503 | // High bits. |
| 2504 | shlp(dst, Immediate(kPointerSize * kBitsPerByte - kSmiShift)); |
| 2505 | orp(dst, scratch); |
| 2506 | } |
| 2507 | |
| 2508 | |
| 2509 | void MacroAssembler::Test(const Operand& src, Smi* source) { |
| 2510 | if (SmiValuesAre32Bits()) { |
| 2511 | testl(Operand(src, kIntSize), Immediate(source->value())); |
| 2512 | } else { |
| 2513 | DCHECK(SmiValuesAre31Bits()); |
| 2514 | testl(src, Immediate(source)); |
| 2515 | } |
| 2516 | } |
| 2517 | |
| 2518 | |
| 2519 | // ---------------------------------------------------------------------------- |
| 2520 | |
| 2521 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2522 | void MacroAssembler::JumpIfNotString(Register object, |
| 2523 | Register object_map, |
| 2524 | Label* not_string, |
| 2525 | Label::Distance near_jump) { |
| 2526 | Condition is_smi = CheckSmi(object); |
| 2527 | j(is_smi, not_string, near_jump); |
| 2528 | CmpObjectType(object, FIRST_NONSTRING_TYPE, object_map); |
| 2529 | j(above_equal, not_string, near_jump); |
| 2530 | } |
| 2531 | |
| 2532 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2533 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings( |
| 2534 | Register first_object, Register second_object, Register scratch1, |
| 2535 | Register scratch2, Label* on_fail, Label::Distance near_jump) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2536 | // Check that both objects are not smis. |
| 2537 | Condition either_smi = CheckEitherSmi(first_object, second_object); |
| 2538 | j(either_smi, on_fail, near_jump); |
| 2539 | |
| 2540 | // Load instance type for both strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2541 | movp(scratch1, FieldOperand(first_object, HeapObject::kMapOffset)); |
| 2542 | movp(scratch2, FieldOperand(second_object, HeapObject::kMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2543 | movzxbl(scratch1, FieldOperand(scratch1, Map::kInstanceTypeOffset)); |
| 2544 | movzxbl(scratch2, FieldOperand(scratch2, Map::kInstanceTypeOffset)); |
| 2545 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2546 | // Check that both are flat one-byte strings. |
| 2547 | DCHECK(kNotStringTag != 0); |
| 2548 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2549 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2550 | const int kFlatOneByteStringTag = |
| 2551 | kStringTag | kOneByteStringTag | kSeqStringTag; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2552 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2553 | andl(scratch1, Immediate(kFlatOneByteStringMask)); |
| 2554 | andl(scratch2, Immediate(kFlatOneByteStringMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2555 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2556 | DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
| 2557 | leap(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2558 | cmpl(scratch1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2559 | Immediate(kFlatOneByteStringTag + (kFlatOneByteStringTag << 3))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2560 | j(not_equal, on_fail, near_jump); |
| 2561 | } |
| 2562 | |
| 2563 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2564 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte( |
| 2565 | Register instance_type, Register scratch, Label* failure, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2566 | Label::Distance near_jump) { |
| 2567 | if (!scratch.is(instance_type)) { |
| 2568 | movl(scratch, instance_type); |
| 2569 | } |
| 2570 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2571 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2572 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 2573 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2574 | andl(scratch, Immediate(kFlatOneByteStringMask)); |
| 2575 | cmpl(scratch, Immediate(kStringTag | kSeqStringTag | kOneByteStringTag)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2576 | j(not_equal, failure, near_jump); |
| 2577 | } |
| 2578 | |
| 2579 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2580 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 2581 | Register first_object_instance_type, Register second_object_instance_type, |
| 2582 | Register scratch1, Register scratch2, Label* on_fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2583 | Label::Distance near_jump) { |
| 2584 | // Load instance type for both strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2585 | movp(scratch1, first_object_instance_type); |
| 2586 | movp(scratch2, second_object_instance_type); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2587 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2588 | // Check that both are flat one-byte strings. |
| 2589 | DCHECK(kNotStringTag != 0); |
| 2590 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2591 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2592 | const int kFlatOneByteStringTag = |
| 2593 | kStringTag | kOneByteStringTag | kSeqStringTag; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2594 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2595 | andl(scratch1, Immediate(kFlatOneByteStringMask)); |
| 2596 | andl(scratch2, Immediate(kFlatOneByteStringMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2597 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2598 | DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
| 2599 | leap(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2600 | cmpl(scratch1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2601 | Immediate(kFlatOneByteStringTag + (kFlatOneByteStringTag << 3))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2602 | j(not_equal, on_fail, near_jump); |
| 2603 | } |
| 2604 | |
| 2605 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2606 | template<class T> |
| 2607 | static void JumpIfNotUniqueNameHelper(MacroAssembler* masm, |
| 2608 | T operand_or_register, |
| 2609 | Label* not_unique_name, |
| 2610 | Label::Distance distance) { |
| 2611 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 2612 | Label succeed; |
| 2613 | masm->testb(operand_or_register, |
| 2614 | Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 2615 | masm->j(zero, &succeed, Label::kNear); |
| 2616 | masm->cmpb(operand_or_register, Immediate(static_cast<uint8_t>(SYMBOL_TYPE))); |
| 2617 | masm->j(not_equal, not_unique_name, distance); |
| 2618 | |
| 2619 | masm->bind(&succeed); |
| 2620 | } |
| 2621 | |
| 2622 | |
| 2623 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Operand operand, |
| 2624 | Label* not_unique_name, |
| 2625 | Label::Distance distance) { |
| 2626 | JumpIfNotUniqueNameHelper<Operand>(this, operand, not_unique_name, distance); |
| 2627 | } |
| 2628 | |
| 2629 | |
| 2630 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 2631 | Label* not_unique_name, |
| 2632 | Label::Distance distance) { |
| 2633 | JumpIfNotUniqueNameHelper<Register>(this, reg, not_unique_name, distance); |
| 2634 | } |
| 2635 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2636 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2637 | void MacroAssembler::Move(Register dst, Register src) { |
| 2638 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2639 | movp(dst, src); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2640 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2641 | } |
| 2642 | |
| 2643 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2644 | void MacroAssembler::Move(Register dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2645 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2646 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2647 | Move(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2648 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2649 | MoveHeapObject(dst, source); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2650 | } |
| 2651 | } |
| 2652 | |
| 2653 | |
| 2654 | void MacroAssembler::Move(const Operand& dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2655 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2656 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2657 | Move(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2658 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2659 | MoveHeapObject(kScratchRegister, source); |
| 2660 | movp(dst, kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2661 | } |
| 2662 | } |
| 2663 | |
| 2664 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2665 | void MacroAssembler::Move(XMMRegister dst, uint32_t src) { |
| 2666 | if (src == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2667 | Xorpd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2668 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2669 | unsigned pop = base::bits::CountPopulation32(src); |
| 2670 | DCHECK_NE(0u, pop); |
| 2671 | if (pop == 32) { |
| 2672 | Pcmpeqd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2673 | } else { |
| 2674 | movl(kScratchRegister, Immediate(src)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2675 | Movq(dst, kScratchRegister); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2676 | } |
| 2677 | } |
| 2678 | } |
| 2679 | |
| 2680 | |
| 2681 | void MacroAssembler::Move(XMMRegister dst, uint64_t src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2682 | if (src == 0) { |
| 2683 | Xorpd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2684 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2685 | unsigned nlz = base::bits::CountLeadingZeros64(src); |
| 2686 | unsigned ntz = base::bits::CountTrailingZeros64(src); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2687 | unsigned pop = base::bits::CountPopulation64(src); |
| 2688 | DCHECK_NE(0u, pop); |
| 2689 | if (pop == 64) { |
| 2690 | Pcmpeqd(dst, dst); |
| 2691 | } else if (pop + ntz == 64) { |
| 2692 | Pcmpeqd(dst, dst); |
| 2693 | Psllq(dst, ntz); |
| 2694 | } else if (pop + nlz == 64) { |
| 2695 | Pcmpeqd(dst, dst); |
| 2696 | Psrlq(dst, nlz); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2697 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2698 | uint32_t lower = static_cast<uint32_t>(src); |
| 2699 | uint32_t upper = static_cast<uint32_t>(src >> 32); |
| 2700 | if (upper == 0) { |
| 2701 | Move(dst, lower); |
| 2702 | } else { |
| 2703 | movq(kScratchRegister, src); |
| 2704 | Movq(dst, kScratchRegister); |
| 2705 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2706 | } |
| 2707 | } |
| 2708 | } |
| 2709 | |
| 2710 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2711 | void MacroAssembler::Movaps(XMMRegister dst, XMMRegister src) { |
| 2712 | if (CpuFeatures::IsSupported(AVX)) { |
| 2713 | CpuFeatureScope scope(this, AVX); |
| 2714 | vmovaps(dst, src); |
| 2715 | } else { |
| 2716 | movaps(dst, src); |
| 2717 | } |
| 2718 | } |
| 2719 | |
| 2720 | |
| 2721 | void MacroAssembler::Movapd(XMMRegister dst, XMMRegister src) { |
| 2722 | if (CpuFeatures::IsSupported(AVX)) { |
| 2723 | CpuFeatureScope scope(this, AVX); |
| 2724 | vmovapd(dst, src); |
| 2725 | } else { |
| 2726 | movapd(dst, src); |
| 2727 | } |
| 2728 | } |
| 2729 | |
| 2730 | |
| 2731 | void MacroAssembler::Movsd(XMMRegister dst, XMMRegister src) { |
| 2732 | if (CpuFeatures::IsSupported(AVX)) { |
| 2733 | CpuFeatureScope scope(this, AVX); |
| 2734 | vmovsd(dst, dst, src); |
| 2735 | } else { |
| 2736 | movsd(dst, src); |
| 2737 | } |
| 2738 | } |
| 2739 | |
| 2740 | |
| 2741 | void MacroAssembler::Movsd(XMMRegister dst, const Operand& src) { |
| 2742 | if (CpuFeatures::IsSupported(AVX)) { |
| 2743 | CpuFeatureScope scope(this, AVX); |
| 2744 | vmovsd(dst, src); |
| 2745 | } else { |
| 2746 | movsd(dst, src); |
| 2747 | } |
| 2748 | } |
| 2749 | |
| 2750 | |
| 2751 | void MacroAssembler::Movsd(const Operand& dst, XMMRegister src) { |
| 2752 | if (CpuFeatures::IsSupported(AVX)) { |
| 2753 | CpuFeatureScope scope(this, AVX); |
| 2754 | vmovsd(dst, src); |
| 2755 | } else { |
| 2756 | movsd(dst, src); |
| 2757 | } |
| 2758 | } |
| 2759 | |
| 2760 | |
| 2761 | void MacroAssembler::Movss(XMMRegister dst, XMMRegister src) { |
| 2762 | if (CpuFeatures::IsSupported(AVX)) { |
| 2763 | CpuFeatureScope scope(this, AVX); |
| 2764 | vmovss(dst, dst, src); |
| 2765 | } else { |
| 2766 | movss(dst, src); |
| 2767 | } |
| 2768 | } |
| 2769 | |
| 2770 | |
| 2771 | void MacroAssembler::Movss(XMMRegister dst, const Operand& src) { |
| 2772 | if (CpuFeatures::IsSupported(AVX)) { |
| 2773 | CpuFeatureScope scope(this, AVX); |
| 2774 | vmovss(dst, src); |
| 2775 | } else { |
| 2776 | movss(dst, src); |
| 2777 | } |
| 2778 | } |
| 2779 | |
| 2780 | |
| 2781 | void MacroAssembler::Movss(const Operand& dst, XMMRegister src) { |
| 2782 | if (CpuFeatures::IsSupported(AVX)) { |
| 2783 | CpuFeatureScope scope(this, AVX); |
| 2784 | vmovss(dst, src); |
| 2785 | } else { |
| 2786 | movss(dst, src); |
| 2787 | } |
| 2788 | } |
| 2789 | |
| 2790 | |
| 2791 | void MacroAssembler::Movd(XMMRegister dst, Register src) { |
| 2792 | if (CpuFeatures::IsSupported(AVX)) { |
| 2793 | CpuFeatureScope scope(this, AVX); |
| 2794 | vmovd(dst, src); |
| 2795 | } else { |
| 2796 | movd(dst, src); |
| 2797 | } |
| 2798 | } |
| 2799 | |
| 2800 | |
| 2801 | void MacroAssembler::Movd(XMMRegister dst, const Operand& src) { |
| 2802 | if (CpuFeatures::IsSupported(AVX)) { |
| 2803 | CpuFeatureScope scope(this, AVX); |
| 2804 | vmovd(dst, src); |
| 2805 | } else { |
| 2806 | movd(dst, src); |
| 2807 | } |
| 2808 | } |
| 2809 | |
| 2810 | |
| 2811 | void MacroAssembler::Movd(Register dst, XMMRegister src) { |
| 2812 | if (CpuFeatures::IsSupported(AVX)) { |
| 2813 | CpuFeatureScope scope(this, AVX); |
| 2814 | vmovd(dst, src); |
| 2815 | } else { |
| 2816 | movd(dst, src); |
| 2817 | } |
| 2818 | } |
| 2819 | |
| 2820 | |
| 2821 | void MacroAssembler::Movq(XMMRegister dst, Register src) { |
| 2822 | if (CpuFeatures::IsSupported(AVX)) { |
| 2823 | CpuFeatureScope scope(this, AVX); |
| 2824 | vmovq(dst, src); |
| 2825 | } else { |
| 2826 | movq(dst, src); |
| 2827 | } |
| 2828 | } |
| 2829 | |
| 2830 | |
| 2831 | void MacroAssembler::Movq(Register dst, XMMRegister src) { |
| 2832 | if (CpuFeatures::IsSupported(AVX)) { |
| 2833 | CpuFeatureScope scope(this, AVX); |
| 2834 | vmovq(dst, src); |
| 2835 | } else { |
| 2836 | movq(dst, src); |
| 2837 | } |
| 2838 | } |
| 2839 | |
| 2840 | |
| 2841 | void MacroAssembler::Movmskpd(Register dst, XMMRegister src) { |
| 2842 | if (CpuFeatures::IsSupported(AVX)) { |
| 2843 | CpuFeatureScope scope(this, AVX); |
| 2844 | vmovmskpd(dst, src); |
| 2845 | } else { |
| 2846 | movmskpd(dst, src); |
| 2847 | } |
| 2848 | } |
| 2849 | |
| 2850 | |
| 2851 | void MacroAssembler::Roundss(XMMRegister dst, XMMRegister src, |
| 2852 | RoundingMode mode) { |
| 2853 | if (CpuFeatures::IsSupported(AVX)) { |
| 2854 | CpuFeatureScope scope(this, AVX); |
| 2855 | vroundss(dst, dst, src, mode); |
| 2856 | } else { |
| 2857 | roundss(dst, src, mode); |
| 2858 | } |
| 2859 | } |
| 2860 | |
| 2861 | |
| 2862 | void MacroAssembler::Roundsd(XMMRegister dst, XMMRegister src, |
| 2863 | RoundingMode mode) { |
| 2864 | if (CpuFeatures::IsSupported(AVX)) { |
| 2865 | CpuFeatureScope scope(this, AVX); |
| 2866 | vroundsd(dst, dst, src, mode); |
| 2867 | } else { |
| 2868 | roundsd(dst, src, mode); |
| 2869 | } |
| 2870 | } |
| 2871 | |
| 2872 | |
| 2873 | void MacroAssembler::Sqrtsd(XMMRegister dst, XMMRegister src) { |
| 2874 | if (CpuFeatures::IsSupported(AVX)) { |
| 2875 | CpuFeatureScope scope(this, AVX); |
| 2876 | vsqrtsd(dst, dst, src); |
| 2877 | } else { |
| 2878 | sqrtsd(dst, src); |
| 2879 | } |
| 2880 | } |
| 2881 | |
| 2882 | |
| 2883 | void MacroAssembler::Sqrtsd(XMMRegister dst, const Operand& src) { |
| 2884 | if (CpuFeatures::IsSupported(AVX)) { |
| 2885 | CpuFeatureScope scope(this, AVX); |
| 2886 | vsqrtsd(dst, dst, src); |
| 2887 | } else { |
| 2888 | sqrtsd(dst, src); |
| 2889 | } |
| 2890 | } |
| 2891 | |
| 2892 | |
| 2893 | void MacroAssembler::Ucomiss(XMMRegister src1, XMMRegister src2) { |
| 2894 | if (CpuFeatures::IsSupported(AVX)) { |
| 2895 | CpuFeatureScope scope(this, AVX); |
| 2896 | vucomiss(src1, src2); |
| 2897 | } else { |
| 2898 | ucomiss(src1, src2); |
| 2899 | } |
| 2900 | } |
| 2901 | |
| 2902 | |
| 2903 | void MacroAssembler::Ucomiss(XMMRegister src1, const Operand& src2) { |
| 2904 | if (CpuFeatures::IsSupported(AVX)) { |
| 2905 | CpuFeatureScope scope(this, AVX); |
| 2906 | vucomiss(src1, src2); |
| 2907 | } else { |
| 2908 | ucomiss(src1, src2); |
| 2909 | } |
| 2910 | } |
| 2911 | |
| 2912 | |
| 2913 | void MacroAssembler::Ucomisd(XMMRegister src1, XMMRegister src2) { |
| 2914 | if (CpuFeatures::IsSupported(AVX)) { |
| 2915 | CpuFeatureScope scope(this, AVX); |
| 2916 | vucomisd(src1, src2); |
| 2917 | } else { |
| 2918 | ucomisd(src1, src2); |
| 2919 | } |
| 2920 | } |
| 2921 | |
| 2922 | |
| 2923 | void MacroAssembler::Ucomisd(XMMRegister src1, const Operand& src2) { |
| 2924 | if (CpuFeatures::IsSupported(AVX)) { |
| 2925 | CpuFeatureScope scope(this, AVX); |
| 2926 | vucomisd(src1, src2); |
| 2927 | } else { |
| 2928 | ucomisd(src1, src2); |
| 2929 | } |
| 2930 | } |
| 2931 | |
| 2932 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2933 | void MacroAssembler::Cmp(Register dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2934 | AllowDeferredHandleDereference smi_check; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2935 | if (source->IsSmi()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2936 | Cmp(dst, Smi::cast(*source)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2937 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2938 | MoveHeapObject(kScratchRegister, source); |
| 2939 | cmpp(dst, kScratchRegister); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2940 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2941 | } |
| 2942 | |
| 2943 | |
| 2944 | void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2945 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2946 | if (source->IsSmi()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2947 | Cmp(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2948 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2949 | MoveHeapObject(kScratchRegister, source); |
| 2950 | cmpp(dst, kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2951 | } |
| 2952 | } |
| 2953 | |
| 2954 | |
| 2955 | void MacroAssembler::Push(Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2956 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2957 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2958 | Push(Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2959 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2960 | MoveHeapObject(kScratchRegister, source); |
| 2961 | Push(kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2962 | } |
| 2963 | } |
| 2964 | |
| 2965 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2966 | void MacroAssembler::MoveHeapObject(Register result, |
| 2967 | Handle<Object> object) { |
| 2968 | AllowDeferredHandleDereference using_raw_address; |
| 2969 | DCHECK(object->IsHeapObject()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2970 | if (isolate()->heap()->InNewSpace(*object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2971 | Handle<Cell> cell = isolate()->factory()->NewCell(object); |
| 2972 | Move(result, cell, RelocInfo::CELL); |
| 2973 | movp(result, Operand(result, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2974 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2975 | Move(result, object, RelocInfo::EMBEDDED_OBJECT); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2976 | } |
| 2977 | } |
| 2978 | |
| 2979 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2980 | void MacroAssembler::LoadGlobalCell(Register dst, Handle<Cell> cell) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2981 | if (dst.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2982 | AllowDeferredHandleDereference embedding_raw_address; |
| 2983 | load_rax(cell.location(), RelocInfo::CELL); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2984 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2985 | Move(dst, cell, RelocInfo::CELL); |
| 2986 | movp(dst, Operand(dst, 0)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2987 | } |
| 2988 | } |
| 2989 | |
| 2990 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2991 | void MacroAssembler::CmpWeakValue(Register value, Handle<WeakCell> cell, |
| 2992 | Register scratch) { |
| 2993 | Move(scratch, cell, RelocInfo::EMBEDDED_OBJECT); |
| 2994 | cmpp(value, FieldOperand(scratch, WeakCell::kValueOffset)); |
| 2995 | } |
| 2996 | |
| 2997 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2998 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2999 | Move(value, cell, RelocInfo::EMBEDDED_OBJECT); |
| 3000 | movp(value, FieldOperand(value, WeakCell::kValueOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3001 | } |
| 3002 | |
| 3003 | |
| 3004 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 3005 | Label* miss) { |
| 3006 | GetWeakValue(value, cell); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3007 | JumpIfSmi(value, miss); |
| 3008 | } |
| 3009 | |
| 3010 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 3011 | void MacroAssembler::Drop(int stack_elements) { |
| 3012 | if (stack_elements > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3013 | addp(rsp, Immediate(stack_elements * kPointerSize)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 3014 | } |
| 3015 | } |
| 3016 | |
| 3017 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3018 | void MacroAssembler::DropUnderReturnAddress(int stack_elements, |
| 3019 | Register scratch) { |
| 3020 | DCHECK(stack_elements > 0); |
| 3021 | if (kPointerSize == kInt64Size && stack_elements == 1) { |
| 3022 | popq(MemOperand(rsp, 0)); |
| 3023 | return; |
| 3024 | } |
| 3025 | |
| 3026 | PopReturnAddressTo(scratch); |
| 3027 | Drop(stack_elements); |
| 3028 | PushReturnAddressFrom(scratch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3029 | } |
| 3030 | |
| 3031 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3032 | void MacroAssembler::Push(Register src) { |
| 3033 | if (kPointerSize == kInt64Size) { |
| 3034 | pushq(src); |
| 3035 | } else { |
| 3036 | // x32 uses 64-bit push for rbp in the prologue. |
| 3037 | DCHECK(src.code() != rbp.code()); |
| 3038 | leal(rsp, Operand(rsp, -4)); |
| 3039 | movp(Operand(rsp, 0), src); |
| 3040 | } |
| 3041 | } |
| 3042 | |
| 3043 | |
| 3044 | void MacroAssembler::Push(const Operand& src) { |
| 3045 | if (kPointerSize == kInt64Size) { |
| 3046 | pushq(src); |
| 3047 | } else { |
| 3048 | movp(kScratchRegister, src); |
| 3049 | leal(rsp, Operand(rsp, -4)); |
| 3050 | movp(Operand(rsp, 0), kScratchRegister); |
| 3051 | } |
| 3052 | } |
| 3053 | |
| 3054 | |
| 3055 | void MacroAssembler::PushQuad(const Operand& src) { |
| 3056 | if (kPointerSize == kInt64Size) { |
| 3057 | pushq(src); |
| 3058 | } else { |
| 3059 | movp(kScratchRegister, src); |
| 3060 | pushq(kScratchRegister); |
| 3061 | } |
| 3062 | } |
| 3063 | |
| 3064 | |
| 3065 | void MacroAssembler::Push(Immediate value) { |
| 3066 | if (kPointerSize == kInt64Size) { |
| 3067 | pushq(value); |
| 3068 | } else { |
| 3069 | leal(rsp, Operand(rsp, -4)); |
| 3070 | movp(Operand(rsp, 0), value); |
| 3071 | } |
| 3072 | } |
| 3073 | |
| 3074 | |
| 3075 | void MacroAssembler::PushImm32(int32_t imm32) { |
| 3076 | if (kPointerSize == kInt64Size) { |
| 3077 | pushq_imm32(imm32); |
| 3078 | } else { |
| 3079 | leal(rsp, Operand(rsp, -4)); |
| 3080 | movp(Operand(rsp, 0), Immediate(imm32)); |
| 3081 | } |
| 3082 | } |
| 3083 | |
| 3084 | |
| 3085 | void MacroAssembler::Pop(Register dst) { |
| 3086 | if (kPointerSize == kInt64Size) { |
| 3087 | popq(dst); |
| 3088 | } else { |
| 3089 | // x32 uses 64-bit pop for rbp in the epilogue. |
| 3090 | DCHECK(dst.code() != rbp.code()); |
| 3091 | movp(dst, Operand(rsp, 0)); |
| 3092 | leal(rsp, Operand(rsp, 4)); |
| 3093 | } |
| 3094 | } |
| 3095 | |
| 3096 | |
| 3097 | void MacroAssembler::Pop(const Operand& dst) { |
| 3098 | if (kPointerSize == kInt64Size) { |
| 3099 | popq(dst); |
| 3100 | } else { |
| 3101 | Register scratch = dst.AddressUsesRegister(kScratchRegister) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3102 | ? kRootRegister : kScratchRegister; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3103 | movp(scratch, Operand(rsp, 0)); |
| 3104 | movp(dst, scratch); |
| 3105 | leal(rsp, Operand(rsp, 4)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3106 | if (scratch.is(kRootRegister)) { |
| 3107 | // Restore kRootRegister. |
| 3108 | InitializeRootRegister(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3109 | } |
| 3110 | } |
| 3111 | } |
| 3112 | |
| 3113 | |
| 3114 | void MacroAssembler::PopQuad(const Operand& dst) { |
| 3115 | if (kPointerSize == kInt64Size) { |
| 3116 | popq(dst); |
| 3117 | } else { |
| 3118 | popq(kScratchRegister); |
| 3119 | movp(dst, kScratchRegister); |
| 3120 | } |
| 3121 | } |
| 3122 | |
| 3123 | |
| 3124 | void MacroAssembler::LoadSharedFunctionInfoSpecialField(Register dst, |
| 3125 | Register base, |
| 3126 | int offset) { |
| 3127 | DCHECK(offset > SharedFunctionInfo::kLengthOffset && |
| 3128 | offset <= SharedFunctionInfo::kSize && |
| 3129 | (((offset - SharedFunctionInfo::kLengthOffset) / kIntSize) % 2 == 1)); |
| 3130 | if (kPointerSize == kInt64Size) { |
| 3131 | movsxlq(dst, FieldOperand(base, offset)); |
| 3132 | } else { |
| 3133 | movp(dst, FieldOperand(base, offset)); |
| 3134 | SmiToInteger32(dst, dst); |
| 3135 | } |
| 3136 | } |
| 3137 | |
| 3138 | |
| 3139 | void MacroAssembler::TestBitSharedFunctionInfoSpecialField(Register base, |
| 3140 | int offset, |
| 3141 | int bits) { |
| 3142 | DCHECK(offset > SharedFunctionInfo::kLengthOffset && |
| 3143 | offset <= SharedFunctionInfo::kSize && |
| 3144 | (((offset - SharedFunctionInfo::kLengthOffset) / kIntSize) % 2 == 1)); |
| 3145 | if (kPointerSize == kInt32Size) { |
| 3146 | // On x32, this field is represented by SMI. |
| 3147 | bits += kSmiShift; |
| 3148 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3149 | int byte_offset = bits / kBitsPerByte; |
| 3150 | int bit_in_byte = bits & (kBitsPerByte - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3151 | testb(FieldOperand(base, offset + byte_offset), Immediate(1 << bit_in_byte)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3152 | } |
| 3153 | |
| 3154 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3155 | void MacroAssembler::Jump(ExternalReference ext) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3156 | LoadAddress(kScratchRegister, ext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3157 | jmp(kScratchRegister); |
| 3158 | } |
| 3159 | |
| 3160 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3161 | void MacroAssembler::Jump(const Operand& op) { |
| 3162 | if (kPointerSize == kInt64Size) { |
| 3163 | jmp(op); |
| 3164 | } else { |
| 3165 | movp(kScratchRegister, op); |
| 3166 | jmp(kScratchRegister); |
| 3167 | } |
| 3168 | } |
| 3169 | |
| 3170 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3171 | void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3172 | Move(kScratchRegister, destination, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3173 | jmp(kScratchRegister); |
| 3174 | } |
| 3175 | |
| 3176 | |
| 3177 | void MacroAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 3178 | // TODO(X64): Inline this |
| 3179 | jmp(code_object, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3180 | } |
| 3181 | |
| 3182 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3183 | int MacroAssembler::CallSize(ExternalReference ext) { |
| 3184 | // Opcode for call kScratchRegister is: Rex.B FF D4 (three bytes). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3185 | return LoadAddressSize(ext) + |
| 3186 | Assembler::kCallScratchRegisterInstructionLength; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3187 | } |
| 3188 | |
| 3189 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3190 | void MacroAssembler::Call(ExternalReference ext) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3191 | #ifdef DEBUG |
| 3192 | int end_position = pc_offset() + CallSize(ext); |
| 3193 | #endif |
| 3194 | LoadAddress(kScratchRegister, ext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3195 | call(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3196 | #ifdef DEBUG |
| 3197 | CHECK_EQ(end_position, pc_offset()); |
| 3198 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3199 | } |
| 3200 | |
| 3201 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3202 | void MacroAssembler::Call(const Operand& op) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3203 | if (kPointerSize == kInt64Size && !CpuFeatures::IsSupported(ATOM)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3204 | call(op); |
| 3205 | } else { |
| 3206 | movp(kScratchRegister, op); |
| 3207 | call(kScratchRegister); |
| 3208 | } |
| 3209 | } |
| 3210 | |
| 3211 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3212 | void MacroAssembler::Call(Address destination, RelocInfo::Mode rmode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3213 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3214 | int end_position = pc_offset() + CallSize(destination); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3215 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3216 | Move(kScratchRegister, destination, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3217 | call(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3218 | #ifdef DEBUG |
| 3219 | CHECK_EQ(pc_offset(), end_position); |
| 3220 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3221 | } |
| 3222 | |
| 3223 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3224 | void MacroAssembler::Call(Handle<Code> code_object, |
| 3225 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3226 | TypeFeedbackId ast_id) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3227 | #ifdef DEBUG |
| 3228 | int end_position = pc_offset() + CallSize(code_object); |
| 3229 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3230 | DCHECK(RelocInfo::IsCodeTarget(rmode) || |
| 3231 | rmode == RelocInfo::CODE_AGE_SEQUENCE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3232 | call(code_object, rmode, ast_id); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3233 | #ifdef DEBUG |
| 3234 | CHECK_EQ(end_position, pc_offset()); |
| 3235 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3236 | } |
| 3237 | |
| 3238 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3239 | void MacroAssembler::Pextrd(Register dst, XMMRegister src, int8_t imm8) { |
| 3240 | if (imm8 == 0) { |
| 3241 | Movd(dst, src); |
| 3242 | return; |
| 3243 | } |
| 3244 | DCHECK_EQ(1, imm8); |
| 3245 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3246 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3247 | pextrd(dst, src, imm8); |
| 3248 | return; |
| 3249 | } |
| 3250 | movq(dst, src); |
| 3251 | shrq(dst, Immediate(32)); |
| 3252 | } |
| 3253 | |
| 3254 | |
| 3255 | void MacroAssembler::Pinsrd(XMMRegister dst, Register src, int8_t imm8) { |
| 3256 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3257 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3258 | pinsrd(dst, src, imm8); |
| 3259 | return; |
| 3260 | } |
| 3261 | Movd(xmm0, src); |
| 3262 | if (imm8 == 1) { |
| 3263 | punpckldq(dst, xmm0); |
| 3264 | } else { |
| 3265 | DCHECK_EQ(0, imm8); |
| 3266 | Movss(dst, xmm0); |
| 3267 | } |
| 3268 | } |
| 3269 | |
| 3270 | |
| 3271 | void MacroAssembler::Pinsrd(XMMRegister dst, const Operand& src, int8_t imm8) { |
| 3272 | DCHECK(imm8 == 0 || imm8 == 1); |
| 3273 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3274 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3275 | pinsrd(dst, src, imm8); |
| 3276 | return; |
| 3277 | } |
| 3278 | Movd(xmm0, src); |
| 3279 | if (imm8 == 1) { |
| 3280 | punpckldq(dst, xmm0); |
| 3281 | } else { |
| 3282 | DCHECK_EQ(0, imm8); |
| 3283 | Movss(dst, xmm0); |
| 3284 | } |
| 3285 | } |
| 3286 | |
| 3287 | |
| 3288 | void MacroAssembler::Lzcntl(Register dst, Register src) { |
| 3289 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3290 | CpuFeatureScope scope(this, LZCNT); |
| 3291 | lzcntl(dst, src); |
| 3292 | return; |
| 3293 | } |
| 3294 | Label not_zero_src; |
| 3295 | bsrl(dst, src); |
| 3296 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3297 | Set(dst, 63); // 63^31 == 32 |
| 3298 | bind(¬_zero_src); |
| 3299 | xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x |
| 3300 | } |
| 3301 | |
| 3302 | |
| 3303 | void MacroAssembler::Lzcntl(Register dst, const Operand& src) { |
| 3304 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3305 | CpuFeatureScope scope(this, LZCNT); |
| 3306 | lzcntl(dst, src); |
| 3307 | return; |
| 3308 | } |
| 3309 | Label not_zero_src; |
| 3310 | bsrl(dst, src); |
| 3311 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3312 | Set(dst, 63); // 63^31 == 32 |
| 3313 | bind(¬_zero_src); |
| 3314 | xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x |
| 3315 | } |
| 3316 | |
| 3317 | |
| 3318 | void MacroAssembler::Lzcntq(Register dst, Register src) { |
| 3319 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3320 | CpuFeatureScope scope(this, LZCNT); |
| 3321 | lzcntq(dst, src); |
| 3322 | return; |
| 3323 | } |
| 3324 | Label not_zero_src; |
| 3325 | bsrq(dst, src); |
| 3326 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3327 | Set(dst, 127); // 127^63 == 64 |
| 3328 | bind(¬_zero_src); |
| 3329 | xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x |
| 3330 | } |
| 3331 | |
| 3332 | |
| 3333 | void MacroAssembler::Lzcntq(Register dst, const Operand& src) { |
| 3334 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3335 | CpuFeatureScope scope(this, LZCNT); |
| 3336 | lzcntq(dst, src); |
| 3337 | return; |
| 3338 | } |
| 3339 | Label not_zero_src; |
| 3340 | bsrq(dst, src); |
| 3341 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3342 | Set(dst, 127); // 127^63 == 64 |
| 3343 | bind(¬_zero_src); |
| 3344 | xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x |
| 3345 | } |
| 3346 | |
| 3347 | |
| 3348 | void MacroAssembler::Tzcntq(Register dst, Register src) { |
| 3349 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3350 | CpuFeatureScope scope(this, BMI1); |
| 3351 | tzcntq(dst, src); |
| 3352 | return; |
| 3353 | } |
| 3354 | Label not_zero_src; |
| 3355 | bsfq(dst, src); |
| 3356 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3357 | // Define the result of tzcnt(0) separately, because bsf(0) is undefined. |
| 3358 | Set(dst, 64); |
| 3359 | bind(¬_zero_src); |
| 3360 | } |
| 3361 | |
| 3362 | |
| 3363 | void MacroAssembler::Tzcntq(Register dst, const Operand& src) { |
| 3364 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3365 | CpuFeatureScope scope(this, BMI1); |
| 3366 | tzcntq(dst, src); |
| 3367 | return; |
| 3368 | } |
| 3369 | Label not_zero_src; |
| 3370 | bsfq(dst, src); |
| 3371 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3372 | // Define the result of tzcnt(0) separately, because bsf(0) is undefined. |
| 3373 | Set(dst, 64); |
| 3374 | bind(¬_zero_src); |
| 3375 | } |
| 3376 | |
| 3377 | |
| 3378 | void MacroAssembler::Tzcntl(Register dst, Register src) { |
| 3379 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3380 | CpuFeatureScope scope(this, BMI1); |
| 3381 | tzcntl(dst, src); |
| 3382 | return; |
| 3383 | } |
| 3384 | Label not_zero_src; |
| 3385 | bsfl(dst, src); |
| 3386 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3387 | Set(dst, 32); // The result of tzcnt is 32 if src = 0. |
| 3388 | bind(¬_zero_src); |
| 3389 | } |
| 3390 | |
| 3391 | |
| 3392 | void MacroAssembler::Tzcntl(Register dst, const Operand& src) { |
| 3393 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3394 | CpuFeatureScope scope(this, BMI1); |
| 3395 | tzcntl(dst, src); |
| 3396 | return; |
| 3397 | } |
| 3398 | Label not_zero_src; |
| 3399 | bsfl(dst, src); |
| 3400 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3401 | Set(dst, 32); // The result of tzcnt is 32 if src = 0. |
| 3402 | bind(¬_zero_src); |
| 3403 | } |
| 3404 | |
| 3405 | |
| 3406 | void MacroAssembler::Popcntl(Register dst, Register src) { |
| 3407 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3408 | CpuFeatureScope scope(this, POPCNT); |
| 3409 | popcntl(dst, src); |
| 3410 | return; |
| 3411 | } |
| 3412 | UNREACHABLE(); |
| 3413 | } |
| 3414 | |
| 3415 | |
| 3416 | void MacroAssembler::Popcntl(Register dst, const Operand& src) { |
| 3417 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3418 | CpuFeatureScope scope(this, POPCNT); |
| 3419 | popcntl(dst, src); |
| 3420 | return; |
| 3421 | } |
| 3422 | UNREACHABLE(); |
| 3423 | } |
| 3424 | |
| 3425 | |
| 3426 | void MacroAssembler::Popcntq(Register dst, Register src) { |
| 3427 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3428 | CpuFeatureScope scope(this, POPCNT); |
| 3429 | popcntq(dst, src); |
| 3430 | return; |
| 3431 | } |
| 3432 | UNREACHABLE(); |
| 3433 | } |
| 3434 | |
| 3435 | |
| 3436 | void MacroAssembler::Popcntq(Register dst, const Operand& src) { |
| 3437 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3438 | CpuFeatureScope scope(this, POPCNT); |
| 3439 | popcntq(dst, src); |
| 3440 | return; |
| 3441 | } |
| 3442 | UNREACHABLE(); |
| 3443 | } |
| 3444 | |
| 3445 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3446 | void MacroAssembler::Pushad() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3447 | Push(rax); |
| 3448 | Push(rcx); |
| 3449 | Push(rdx); |
| 3450 | Push(rbx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3451 | // Not pushing rsp or rbp. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3452 | Push(rsi); |
| 3453 | Push(rdi); |
| 3454 | Push(r8); |
| 3455 | Push(r9); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3456 | // r10 is kScratchRegister. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3457 | Push(r11); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3458 | Push(r12); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3459 | // r13 is kRootRegister. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3460 | Push(r14); |
| 3461 | Push(r15); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3462 | STATIC_ASSERT(12 == kNumSafepointSavedRegisters); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3463 | // Use lea for symmetry with Popad. |
| 3464 | int sp_delta = |
| 3465 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3466 | leap(rsp, Operand(rsp, -sp_delta)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3467 | } |
| 3468 | |
| 3469 | |
| 3470 | void MacroAssembler::Popad() { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3471 | // Popad must not change the flags, so use lea instead of addq. |
| 3472 | int sp_delta = |
| 3473 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3474 | leap(rsp, Operand(rsp, sp_delta)); |
| 3475 | Pop(r15); |
| 3476 | Pop(r14); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3477 | Pop(r12); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3478 | Pop(r11); |
| 3479 | Pop(r9); |
| 3480 | Pop(r8); |
| 3481 | Pop(rdi); |
| 3482 | Pop(rsi); |
| 3483 | Pop(rbx); |
| 3484 | Pop(rdx); |
| 3485 | Pop(rcx); |
| 3486 | Pop(rax); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3487 | } |
| 3488 | |
| 3489 | |
| 3490 | void MacroAssembler::Dropad() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3491 | addp(rsp, Immediate(kNumSafepointRegisters * kPointerSize)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3492 | } |
| 3493 | |
| 3494 | |
| 3495 | // Order general registers are pushed by Pushad: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3496 | // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3497 | const int |
| 3498 | MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3499 | 0, |
| 3500 | 1, |
| 3501 | 2, |
| 3502 | 3, |
| 3503 | -1, |
| 3504 | -1, |
| 3505 | 4, |
| 3506 | 5, |
| 3507 | 6, |
| 3508 | 7, |
| 3509 | -1, |
| 3510 | 8, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3511 | 9, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3512 | -1, |
| 3513 | 10, |
| 3514 | 11 |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3515 | }; |
| 3516 | |
| 3517 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3518 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, |
| 3519 | const Immediate& imm) { |
| 3520 | movp(SafepointRegisterSlot(dst), imm); |
| 3521 | } |
| 3522 | |
| 3523 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3524 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3525 | movp(SafepointRegisterSlot(dst), src); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3526 | } |
| 3527 | |
| 3528 | |
| 3529 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3530 | movp(dst, SafepointRegisterSlot(src)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3531 | } |
| 3532 | |
| 3533 | |
| 3534 | Operand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 3535 | return Operand(rsp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 3536 | } |
| 3537 | |
| 3538 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3539 | void MacroAssembler::PushStackHandler() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3540 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3541 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3542 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3543 | |
| 3544 | // Link the current handler as the next handler. |
| 3545 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3546 | Push(ExternalOperand(handler_address)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3547 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3548 | // Set this new handler as the current one. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3549 | movp(ExternalOperand(handler_address), rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3550 | } |
| 3551 | |
| 3552 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3553 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3554 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
| 3555 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3556 | Pop(ExternalOperand(handler_address)); |
| 3557 | addp(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 3558 | } |
| 3559 | |
| 3560 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3561 | void MacroAssembler::Ret() { |
| 3562 | ret(0); |
| 3563 | } |
| 3564 | |
| 3565 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3566 | void MacroAssembler::Ret(int bytes_dropped, Register scratch) { |
| 3567 | if (is_uint16(bytes_dropped)) { |
| 3568 | ret(bytes_dropped); |
| 3569 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3570 | PopReturnAddressTo(scratch); |
| 3571 | addp(rsp, Immediate(bytes_dropped)); |
| 3572 | PushReturnAddressFrom(scratch); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3573 | ret(0); |
| 3574 | } |
| 3575 | } |
| 3576 | |
| 3577 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3578 | void MacroAssembler::FCmp() { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 3579 | fucomip(); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 3580 | fstp(0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3581 | } |
| 3582 | |
| 3583 | |
| 3584 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 3585 | InstanceType type, |
| 3586 | Register map) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3587 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3588 | CmpInstanceType(map, type); |
| 3589 | } |
| 3590 | |
| 3591 | |
| 3592 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 3593 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 3594 | Immediate(static_cast<int8_t>(type))); |
| 3595 | } |
| 3596 | |
| 3597 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3598 | void MacroAssembler::CheckFastElements(Register map, |
| 3599 | Label* fail, |
| 3600 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3601 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3602 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3603 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3604 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3605 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3606 | Immediate(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3607 | j(above, fail, distance); |
| 3608 | } |
| 3609 | |
| 3610 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3611 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 3612 | Label* fail, |
| 3613 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3614 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3615 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3616 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3617 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3618 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3619 | Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3620 | j(below_equal, fail, distance); |
| 3621 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3622 | Immediate(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3623 | j(above, fail, distance); |
| 3624 | } |
| 3625 | |
| 3626 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3627 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 3628 | Label* fail, |
| 3629 | Label::Distance distance) { |
| 3630 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3631 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3632 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3633 | Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3634 | j(above, fail, distance); |
| 3635 | } |
| 3636 | |
| 3637 | |
| 3638 | void MacroAssembler::StoreNumberToDoubleElements( |
| 3639 | Register maybe_number, |
| 3640 | Register elements, |
| 3641 | Register index, |
| 3642 | XMMRegister xmm_scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3643 | Label* fail, |
| 3644 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3645 | Label smi_value, done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3646 | |
| 3647 | JumpIfSmi(maybe_number, &smi_value, Label::kNear); |
| 3648 | |
| 3649 | CheckMap(maybe_number, |
| 3650 | isolate()->factory()->heap_number_map(), |
| 3651 | fail, |
| 3652 | DONT_DO_SMI_CHECK); |
| 3653 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3654 | // Double value, turn potential sNaN into qNaN. |
| 3655 | Move(xmm_scratch, 1.0); |
| 3656 | mulsd(xmm_scratch, FieldOperand(maybe_number, HeapNumber::kValueOffset)); |
| 3657 | jmp(&done, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3658 | |
| 3659 | bind(&smi_value); |
| 3660 | // Value is a smi. convert to a double and store. |
| 3661 | // Preserve original value. |
| 3662 | SmiToInteger32(kScratchRegister, maybe_number); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3663 | Cvtlsi2sd(xmm_scratch, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3664 | bind(&done); |
| 3665 | Movsd(FieldOperand(elements, index, times_8, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3666 | FixedDoubleArray::kHeaderSize - elements_offset), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3667 | xmm_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3668 | } |
| 3669 | |
| 3670 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3671 | void MacroAssembler::CompareMap(Register obj, Handle<Map> map) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3672 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3673 | } |
| 3674 | |
| 3675 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3676 | void MacroAssembler::CheckMap(Register obj, |
| 3677 | Handle<Map> map, |
| 3678 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3679 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3680 | if (smi_check_type == DO_SMI_CHECK) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3681 | JumpIfSmi(obj, fail); |
| 3682 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3683 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3684 | CompareMap(obj, map); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3685 | j(not_equal, fail); |
| 3686 | } |
| 3687 | |
| 3688 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3689 | void MacroAssembler::ClampUint8(Register reg) { |
| 3690 | Label done; |
| 3691 | testl(reg, Immediate(0xFFFFFF00)); |
| 3692 | j(zero, &done, Label::kNear); |
| 3693 | setcc(negative, reg); // 1 if negative, 0 if positive. |
| 3694 | decb(reg); // 0 if negative, 255 if positive. |
| 3695 | bind(&done); |
| 3696 | } |
| 3697 | |
| 3698 | |
| 3699 | void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg, |
| 3700 | XMMRegister temp_xmm_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3701 | Register result_reg) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3702 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3703 | Label conv_failure; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3704 | Xorpd(temp_xmm_reg, temp_xmm_reg); |
| 3705 | Cvtsd2si(result_reg, input_reg); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3706 | testl(result_reg, Immediate(0xFFFFFF00)); |
| 3707 | j(zero, &done, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3708 | cmpl(result_reg, Immediate(1)); |
| 3709 | j(overflow, &conv_failure, Label::kNear); |
| 3710 | movl(result_reg, Immediate(0)); |
| 3711 | setcc(sign, result_reg); |
| 3712 | subl(result_reg, Immediate(1)); |
| 3713 | andl(result_reg, Immediate(255)); |
| 3714 | jmp(&done, Label::kNear); |
| 3715 | bind(&conv_failure); |
| 3716 | Set(result_reg, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3717 | Ucomisd(input_reg, temp_xmm_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3718 | j(below, &done, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3719 | Set(result_reg, 255); |
| 3720 | bind(&done); |
| 3721 | } |
| 3722 | |
| 3723 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3724 | void MacroAssembler::LoadUint32(XMMRegister dst, |
| 3725 | Register src) { |
| 3726 | if (FLAG_debug_code) { |
| 3727 | cmpq(src, Immediate(0xffffffff)); |
| 3728 | Assert(below_equal, kInputGPRIsExpectedToHaveUpper32Cleared); |
| 3729 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3730 | Cvtqsi2sd(dst, src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3731 | } |
| 3732 | |
| 3733 | |
| 3734 | void MacroAssembler::SlowTruncateToI(Register result_reg, |
| 3735 | Register input_reg, |
| 3736 | int offset) { |
| 3737 | DoubleToIStub stub(isolate(), input_reg, result_reg, offset, true); |
| 3738 | call(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 3739 | } |
| 3740 | |
| 3741 | |
| 3742 | void MacroAssembler::TruncateHeapNumberToI(Register result_reg, |
| 3743 | Register input_reg) { |
| 3744 | Label done; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3745 | Movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 3746 | Cvttsd2siq(result_reg, xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3747 | cmpq(result_reg, Immediate(1)); |
| 3748 | j(no_overflow, &done, Label::kNear); |
| 3749 | |
| 3750 | // Slow case. |
| 3751 | if (input_reg.is(result_reg)) { |
| 3752 | subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3753 | Movsd(MemOperand(rsp, 0), xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3754 | SlowTruncateToI(result_reg, rsp, 0); |
| 3755 | addp(rsp, Immediate(kDoubleSize)); |
| 3756 | } else { |
| 3757 | SlowTruncateToI(result_reg, input_reg); |
| 3758 | } |
| 3759 | |
| 3760 | bind(&done); |
| 3761 | // Keep our invariant that the upper 32 bits are zero. |
| 3762 | movl(result_reg, result_reg); |
| 3763 | } |
| 3764 | |
| 3765 | |
| 3766 | void MacroAssembler::TruncateDoubleToI(Register result_reg, |
| 3767 | XMMRegister input_reg) { |
| 3768 | Label done; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3769 | Cvttsd2siq(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3770 | cmpq(result_reg, Immediate(1)); |
| 3771 | j(no_overflow, &done, Label::kNear); |
| 3772 | |
| 3773 | subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3774 | Movsd(MemOperand(rsp, 0), input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3775 | SlowTruncateToI(result_reg, rsp, 0); |
| 3776 | addp(rsp, Immediate(kDoubleSize)); |
| 3777 | |
| 3778 | bind(&done); |
| 3779 | // Keep our invariant that the upper 32 bits are zero. |
| 3780 | movl(result_reg, result_reg); |
| 3781 | } |
| 3782 | |
| 3783 | |
| 3784 | void MacroAssembler::DoubleToI(Register result_reg, XMMRegister input_reg, |
| 3785 | XMMRegister scratch, |
| 3786 | MinusZeroMode minus_zero_mode, |
| 3787 | Label* lost_precision, Label* is_nan, |
| 3788 | Label* minus_zero, Label::Distance dst) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3789 | Cvttsd2si(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3790 | Cvtlsi2sd(xmm0, result_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3791 | Ucomisd(xmm0, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3792 | j(not_equal, lost_precision, dst); |
| 3793 | j(parity_even, is_nan, dst); // NaN. |
| 3794 | if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { |
| 3795 | Label done; |
| 3796 | // The integer converted back is equal to the original. We |
| 3797 | // only have to test if we got -0 as an input. |
| 3798 | testl(result_reg, result_reg); |
| 3799 | j(not_zero, &done, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3800 | Movmskpd(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3801 | // Bit 0 contains the sign of the double in input_reg. |
| 3802 | // If input was positive, we are ok and return 0, otherwise |
| 3803 | // jump to minus_zero. |
| 3804 | andl(result_reg, Immediate(1)); |
| 3805 | j(not_zero, minus_zero, dst); |
| 3806 | bind(&done); |
| 3807 | } |
| 3808 | } |
| 3809 | |
| 3810 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3811 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 3812 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3813 | movp(descriptors, FieldOperand(map, Map::kDescriptorsOffset)); |
| 3814 | } |
| 3815 | |
| 3816 | |
| 3817 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 3818 | movl(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 3819 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 3820 | } |
| 3821 | |
| 3822 | |
| 3823 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 3824 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 3825 | movl(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 3826 | andl(dst, Immediate(Map::EnumLengthBits::kMask)); |
| 3827 | Integer32ToSmi(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3828 | } |
| 3829 | |
| 3830 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3831 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 3832 | int accessor_index, |
| 3833 | AccessorComponent accessor) { |
| 3834 | movp(dst, FieldOperand(holder, HeapObject::kMapOffset)); |
| 3835 | LoadInstanceDescriptors(dst, dst); |
| 3836 | movp(dst, FieldOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 3837 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 3838 | : AccessorPair::kSetterOffset; |
| 3839 | movp(dst, FieldOperand(dst, offset)); |
| 3840 | } |
| 3841 | |
| 3842 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3843 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 3844 | Register scratch2, Handle<WeakCell> cell, |
| 3845 | Handle<Code> success, |
| 3846 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3847 | Label fail; |
| 3848 | if (smi_check_type == DO_SMI_CHECK) { |
| 3849 | JumpIfSmi(obj, &fail); |
| 3850 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3851 | movq(scratch1, FieldOperand(obj, HeapObject::kMapOffset)); |
| 3852 | CmpWeakValue(scratch1, cell, scratch2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3853 | j(equal, success, RelocInfo::CODE_TARGET); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3854 | bind(&fail); |
| 3855 | } |
| 3856 | |
| 3857 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3858 | void MacroAssembler::AssertNumber(Register object) { |
| 3859 | if (emit_debug_code()) { |
| 3860 | Label ok; |
| 3861 | Condition is_smi = CheckSmi(object); |
| 3862 | j(is_smi, &ok, Label::kNear); |
| 3863 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
| 3864 | isolate()->factory()->heap_number_map()); |
| 3865 | Check(equal, kOperandIsNotANumber); |
| 3866 | bind(&ok); |
| 3867 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 3868 | } |
| 3869 | |
| 3870 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3871 | void MacroAssembler::AssertNotSmi(Register object) { |
| 3872 | if (emit_debug_code()) { |
| 3873 | Condition is_smi = CheckSmi(object); |
| 3874 | Check(NegateCondition(is_smi), kOperandIsASmi); |
| 3875 | } |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 3876 | } |
| 3877 | |
| 3878 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3879 | void MacroAssembler::AssertSmi(Register object) { |
| 3880 | if (emit_debug_code()) { |
| 3881 | Condition is_smi = CheckSmi(object); |
| 3882 | Check(is_smi, kOperandIsNotASmi); |
| 3883 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3884 | } |
| 3885 | |
| 3886 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3887 | void MacroAssembler::AssertSmi(const Operand& object) { |
| 3888 | if (emit_debug_code()) { |
| 3889 | Condition is_smi = CheckSmi(object); |
| 3890 | Check(is_smi, kOperandIsNotASmi); |
| 3891 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3892 | } |
| 3893 | |
| 3894 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3895 | void MacroAssembler::AssertZeroExtended(Register int32_register) { |
| 3896 | if (emit_debug_code()) { |
| 3897 | DCHECK(!int32_register.is(kScratchRegister)); |
| 3898 | movq(kScratchRegister, V8_INT64_C(0x0000000100000000)); |
| 3899 | cmpq(kScratchRegister, int32_register); |
| 3900 | Check(above_equal, k32BitValueInRegisterIsNotZeroExtended); |
| 3901 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3902 | } |
| 3903 | |
| 3904 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3905 | void MacroAssembler::AssertString(Register object) { |
| 3906 | if (emit_debug_code()) { |
| 3907 | testb(object, Immediate(kSmiTagMask)); |
| 3908 | Check(not_equal, kOperandIsASmiAndNotAString); |
| 3909 | Push(object); |
| 3910 | movp(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 3911 | CmpInstanceType(object, FIRST_NONSTRING_TYPE); |
| 3912 | Pop(object); |
| 3913 | Check(below, kOperandIsNotAString); |
| 3914 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3915 | } |
| 3916 | |
| 3917 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3918 | void MacroAssembler::AssertName(Register object) { |
| 3919 | if (emit_debug_code()) { |
| 3920 | testb(object, Immediate(kSmiTagMask)); |
| 3921 | Check(not_equal, kOperandIsASmiAndNotAName); |
| 3922 | Push(object); |
| 3923 | movp(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 3924 | CmpInstanceType(object, LAST_NAME_TYPE); |
| 3925 | Pop(object); |
| 3926 | Check(below_equal, kOperandIsNotAName); |
| 3927 | } |
| 3928 | } |
| 3929 | |
| 3930 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3931 | void MacroAssembler::AssertFunction(Register object) { |
| 3932 | if (emit_debug_code()) { |
| 3933 | testb(object, Immediate(kSmiTagMask)); |
| 3934 | Check(not_equal, kOperandIsASmiAndNotAFunction); |
| 3935 | Push(object); |
| 3936 | CmpObjectType(object, JS_FUNCTION_TYPE, object); |
| 3937 | Pop(object); |
| 3938 | Check(equal, kOperandIsNotAFunction); |
| 3939 | } |
| 3940 | } |
| 3941 | |
| 3942 | |
| 3943 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 3944 | if (emit_debug_code()) { |
| 3945 | testb(object, Immediate(kSmiTagMask)); |
| 3946 | Check(not_equal, kOperandIsASmiAndNotABoundFunction); |
| 3947 | Push(object); |
| 3948 | CmpObjectType(object, JS_BOUND_FUNCTION_TYPE, object); |
| 3949 | Pop(object); |
| 3950 | Check(equal, kOperandIsNotABoundFunction); |
| 3951 | } |
| 3952 | } |
| 3953 | |
| 3954 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 3955 | void MacroAssembler::AssertReceiver(Register object) { |
| 3956 | if (emit_debug_code()) { |
| 3957 | testb(object, Immediate(kSmiTagMask)); |
| 3958 | Check(not_equal, kOperandIsASmiAndNotAReceiver); |
| 3959 | Push(object); |
| 3960 | STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE); |
| 3961 | CmpObjectType(object, FIRST_JS_RECEIVER_TYPE, object); |
| 3962 | Pop(object); |
| 3963 | Check(above_equal, kOperandIsNotAReceiver); |
| 3964 | } |
| 3965 | } |
| 3966 | |
| 3967 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3968 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) { |
| 3969 | if (emit_debug_code()) { |
| 3970 | Label done_checking; |
| 3971 | AssertNotSmi(object); |
| 3972 | Cmp(object, isolate()->factory()->undefined_value()); |
| 3973 | j(equal, &done_checking); |
| 3974 | Cmp(FieldOperand(object, 0), isolate()->factory()->allocation_site_map()); |
| 3975 | Assert(equal, kExpectedUndefinedOrCell); |
| 3976 | bind(&done_checking); |
| 3977 | } |
| 3978 | } |
| 3979 | |
| 3980 | |
| 3981 | void MacroAssembler::AssertRootValue(Register src, |
| 3982 | Heap::RootListIndex root_value_index, |
| 3983 | BailoutReason reason) { |
| 3984 | if (emit_debug_code()) { |
| 3985 | DCHECK(!src.is(kScratchRegister)); |
| 3986 | LoadRoot(kScratchRegister, root_value_index); |
| 3987 | cmpp(src, kScratchRegister); |
| 3988 | Check(equal, reason); |
| 3989 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 3990 | } |
| 3991 | |
| 3992 | |
| 3993 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 3994 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 3995 | Register map, |
| 3996 | Register instance_type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3997 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 3998 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3999 | STATIC_ASSERT(kNotStringTag != 0); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 4000 | testb(instance_type, Immediate(kIsNotStringMask)); |
| 4001 | return zero; |
| 4002 | } |
| 4003 | |
| 4004 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4005 | Condition MacroAssembler::IsObjectNameType(Register heap_object, |
| 4006 | Register map, |
| 4007 | Register instance_type) { |
| 4008 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 4009 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 4010 | cmpb(instance_type, Immediate(static_cast<uint8_t>(LAST_NAME_TYPE))); |
| 4011 | return below_equal; |
| 4012 | } |
| 4013 | |
| 4014 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4015 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 4016 | Register temp) { |
| 4017 | Label done, loop; |
| 4018 | movp(result, FieldOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 4019 | bind(&loop); |
| 4020 | JumpIfSmi(result, &done, Label::kNear); |
| 4021 | CmpObjectType(result, MAP_TYPE, temp); |
| 4022 | j(not_equal, &done, Label::kNear); |
| 4023 | movp(result, FieldOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 4024 | jmp(&loop); |
| 4025 | bind(&done); |
| 4026 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4027 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4028 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4029 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 4030 | Label* miss) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4031 | // Get the prototype or initial map from the function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4032 | movp(result, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4033 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4034 | |
| 4035 | // If the prototype or initial map is the hole, don't return it and |
| 4036 | // simply miss the cache instead. This will allow us to allocate a |
| 4037 | // prototype object on-demand in the runtime system. |
| 4038 | CompareRoot(result, Heap::kTheHoleValueRootIndex); |
| 4039 | j(equal, miss); |
| 4040 | |
| 4041 | // If the function does not have an initial map, we're done. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4042 | Label done; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4043 | CmpObjectType(result, MAP_TYPE, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4044 | j(not_equal, &done, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4045 | |
| 4046 | // Get the prototype from the initial map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4047 | movp(result, FieldOperand(result, Map::kPrototypeOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4048 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4049 | // All done. |
| 4050 | bind(&done); |
| 4051 | } |
| 4052 | |
| 4053 | |
| 4054 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 4055 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4056 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 4057 | movl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4058 | } |
| 4059 | } |
| 4060 | |
| 4061 | |
| 4062 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4063 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4064 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4065 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4066 | if (value == 1) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4067 | incl(counter_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4068 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4069 | addl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4070 | } |
| 4071 | } |
| 4072 | } |
| 4073 | |
| 4074 | |
| 4075 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4076 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4077 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4078 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4079 | if (value == 1) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4080 | decl(counter_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4081 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4082 | subl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4083 | } |
| 4084 | } |
| 4085 | } |
| 4086 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4087 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 4088 | void MacroAssembler::DebugBreak() { |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 4089 | Set(rax, 0); // No arguments. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4090 | LoadAddress(rbx, |
| 4091 | ExternalReference(Runtime::kHandleDebuggerStatement, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4092 | CEntryStub ces(isolate(), 1); |
| 4093 | DCHECK(AllowThisStubCall(&ces)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4094 | Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4095 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4096 | |
| 4097 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4098 | void MacroAssembler::InvokeFunction(Register function, |
| 4099 | Register new_target, |
| 4100 | const ParameterCount& actual, |
| 4101 | InvokeFlag flag, |
| 4102 | const CallWrapper& call_wrapper) { |
| 4103 | movp(rbx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 4104 | LoadSharedFunctionInfoSpecialField( |
| 4105 | rbx, rbx, SharedFunctionInfo::kFormalParameterCountOffset); |
| 4106 | |
| 4107 | ParameterCount expected(rbx); |
| 4108 | InvokeFunction(function, new_target, expected, actual, flag, call_wrapper); |
| 4109 | } |
| 4110 | |
| 4111 | |
| 4112 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 4113 | const ParameterCount& expected, |
| 4114 | const ParameterCount& actual, |
| 4115 | InvokeFlag flag, |
| 4116 | const CallWrapper& call_wrapper) { |
| 4117 | Move(rdi, function); |
| 4118 | InvokeFunction(rdi, no_reg, expected, actual, flag, call_wrapper); |
| 4119 | } |
| 4120 | |
| 4121 | |
| 4122 | void MacroAssembler::InvokeFunction(Register function, |
| 4123 | Register new_target, |
| 4124 | const ParameterCount& expected, |
| 4125 | const ParameterCount& actual, |
| 4126 | InvokeFlag flag, |
| 4127 | const CallWrapper& call_wrapper) { |
| 4128 | DCHECK(function.is(rdi)); |
| 4129 | movp(rsi, FieldOperand(function, JSFunction::kContextOffset)); |
| 4130 | InvokeFunctionCode(rdi, new_target, expected, actual, flag, call_wrapper); |
| 4131 | } |
| 4132 | |
| 4133 | |
| 4134 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 4135 | const ParameterCount& expected, |
| 4136 | const ParameterCount& actual, |
| 4137 | InvokeFlag flag, |
| 4138 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4139 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4140 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4141 | DCHECK(function.is(rdi)); |
| 4142 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(rdx)); |
| 4143 | |
| 4144 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 4145 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 4146 | } |
| 4147 | |
| 4148 | // Clear the new.target register if not given. |
| 4149 | if (!new_target.is_valid()) { |
| 4150 | LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
| 4151 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4152 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4153 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4154 | bool definitely_mismatches = false; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4155 | InvokePrologue(expected, |
| 4156 | actual, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4157 | &done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4158 | &definitely_mismatches, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4159 | flag, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4160 | Label::kNear, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4161 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4162 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4163 | // We call indirectly through the code field in the function to |
| 4164 | // allow recompilation to take effect without changing any of the |
| 4165 | // call sites. |
| 4166 | Operand code = FieldOperand(function, JSFunction::kCodeEntryOffset); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4167 | if (flag == CALL_FUNCTION) { |
| 4168 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4169 | call(code); |
| 4170 | call_wrapper.AfterCall(); |
| 4171 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4172 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4173 | jmp(code); |
| 4174 | } |
| 4175 | bind(&done); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4176 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4177 | } |
| 4178 | |
| 4179 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4180 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 4181 | const ParameterCount& actual, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4182 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4183 | bool* definitely_mismatches, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4184 | InvokeFlag flag, |
| 4185 | Label::Distance near_jump, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4186 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4187 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4188 | *definitely_mismatches = false; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4189 | Label invoke; |
| 4190 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4191 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4192 | Set(rax, actual.immediate()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4193 | if (expected.immediate() == actual.immediate()) { |
| 4194 | definitely_matches = true; |
| 4195 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4196 | if (expected.immediate() == |
| 4197 | SharedFunctionInfo::kDontAdaptArgumentsSentinel) { |
| 4198 | // Don't worry about adapting arguments for built-ins that |
| 4199 | // don't want that done. Skip adaption code by making it look |
| 4200 | // like we have a match between expected and actual number of |
| 4201 | // arguments. |
| 4202 | definitely_matches = true; |
| 4203 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4204 | *definitely_mismatches = true; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4205 | Set(rbx, expected.immediate()); |
| 4206 | } |
| 4207 | } |
| 4208 | } else { |
| 4209 | if (actual.is_immediate()) { |
| 4210 | // Expected is in register, actual is immediate. This is the |
| 4211 | // case when we invoke function values without going through the |
| 4212 | // IC mechanism. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4213 | Set(rax, actual.immediate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4214 | cmpp(expected.reg(), Immediate(actual.immediate())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4215 | j(equal, &invoke, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4216 | DCHECK(expected.reg().is(rbx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4217 | } else if (!expected.reg().is(actual.reg())) { |
| 4218 | // Both expected and actual are in (different) registers. This |
| 4219 | // is the case when we invoke functions using call and apply. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4220 | cmpp(expected.reg(), actual.reg()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4221 | j(equal, &invoke, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4222 | DCHECK(actual.reg().is(rax)); |
| 4223 | DCHECK(expected.reg().is(rbx)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4224 | } else { |
| 4225 | Move(rax, actual.reg()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4226 | } |
| 4227 | } |
| 4228 | |
| 4229 | if (!definitely_matches) { |
| 4230 | Handle<Code> adaptor = isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4231 | if (flag == CALL_FUNCTION) { |
| 4232 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4233 | Call(adaptor, RelocInfo::CODE_TARGET); |
| 4234 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4235 | if (!*definitely_mismatches) { |
| 4236 | jmp(done, near_jump); |
| 4237 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4238 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4239 | Jump(adaptor, RelocInfo::CODE_TARGET); |
| 4240 | } |
| 4241 | bind(&invoke); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4242 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 4243 | } |
| 4244 | |
| 4245 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4246 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 4247 | const ParameterCount& expected, |
| 4248 | const ParameterCount& actual) { |
| 4249 | Label skip_flooding; |
| 4250 | ExternalReference step_in_enabled = |
| 4251 | ExternalReference::debug_step_in_enabled_address(isolate()); |
| 4252 | Operand step_in_enabled_operand = ExternalOperand(step_in_enabled); |
| 4253 | cmpb(step_in_enabled_operand, Immediate(0)); |
| 4254 | j(equal, &skip_flooding); |
| 4255 | { |
| 4256 | FrameScope frame(this, |
| 4257 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 4258 | if (expected.is_reg()) { |
| 4259 | Integer32ToSmi(expected.reg(), expected.reg()); |
| 4260 | Push(expected.reg()); |
| 4261 | } |
| 4262 | if (actual.is_reg()) { |
| 4263 | Integer32ToSmi(actual.reg(), actual.reg()); |
| 4264 | Push(actual.reg()); |
| 4265 | } |
| 4266 | if (new_target.is_valid()) { |
| 4267 | Push(new_target); |
| 4268 | } |
| 4269 | Push(fun); |
| 4270 | Push(fun); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 4271 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4272 | Pop(fun); |
| 4273 | if (new_target.is_valid()) { |
| 4274 | Pop(new_target); |
| 4275 | } |
| 4276 | if (actual.is_reg()) { |
| 4277 | Pop(actual.reg()); |
| 4278 | SmiToInteger64(actual.reg(), actual.reg()); |
| 4279 | } |
| 4280 | if (expected.is_reg()) { |
| 4281 | Pop(expected.reg()); |
| 4282 | SmiToInteger64(expected.reg(), expected.reg()); |
| 4283 | } |
| 4284 | } |
| 4285 | bind(&skip_flooding); |
| 4286 | } |
| 4287 | |
| 4288 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4289 | void MacroAssembler::StubPrologue() { |
| 4290 | pushq(rbp); // Caller's frame pointer. |
| 4291 | movp(rbp, rsp); |
| 4292 | Push(rsi); // Callee's context. |
| 4293 | Push(Smi::FromInt(StackFrame::STUB)); |
| 4294 | } |
| 4295 | |
| 4296 | |
| 4297 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 4298 | PredictableCodeSizeScope predictible_code_size_scope(this, |
| 4299 | kNoCodeAgeSequenceLength); |
| 4300 | if (code_pre_aging) { |
| 4301 | // Pre-age the code. |
| 4302 | Call(isolate()->builtins()->MarkCodeAsExecutedOnce(), |
| 4303 | RelocInfo::CODE_AGE_SEQUENCE); |
| 4304 | Nop(kNoCodeAgeSequenceLength - Assembler::kShortCallInstructionLength); |
| 4305 | } else { |
| 4306 | pushq(rbp); // Caller's frame pointer. |
| 4307 | movp(rbp, rsp); |
| 4308 | Push(rsi); // Callee's context. |
| 4309 | Push(rdi); // Callee's JS function. |
| 4310 | } |
| 4311 | } |
| 4312 | |
| 4313 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4314 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 4315 | movp(vector, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
| 4316 | movp(vector, FieldOperand(vector, JSFunction::kSharedFunctionInfoOffset)); |
| 4317 | movp(vector, FieldOperand(vector, SharedFunctionInfo::kFeedbackVectorOffset)); |
| 4318 | } |
| 4319 | |
| 4320 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4321 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 4322 | bool load_constant_pool_pointer_reg) { |
| 4323 | // Out-of-line constant pool not implemented on x64. |
| 4324 | UNREACHABLE(); |
| 4325 | } |
| 4326 | |
| 4327 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4328 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4329 | pushq(rbp); |
| 4330 | movp(rbp, rsp); |
| 4331 | Push(rsi); // Context. |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4332 | Push(Smi::FromInt(type)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4333 | Move(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 4334 | Push(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4335 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4336 | Move(kScratchRegister, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4337 | isolate()->factory()->undefined_value(), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4338 | RelocInfo::EMBEDDED_OBJECT); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4339 | cmpp(Operand(rsp, 0), kScratchRegister); |
| 4340 | Check(not_equal, kCodeObjectNotProperlyPatched); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4341 | } |
| 4342 | } |
| 4343 | |
| 4344 | |
| 4345 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4346 | if (emit_debug_code()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4347 | Move(kScratchRegister, Smi::FromInt(type)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4348 | cmpp(Operand(rbp, StandardFrameConstants::kMarkerOffset), kScratchRegister); |
| 4349 | Check(equal, kStackFrameTypesMustMatch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4350 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4351 | movp(rsp, rbp); |
| 4352 | popq(rbp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4353 | } |
| 4354 | |
| 4355 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4356 | void MacroAssembler::EnterExitFramePrologue(bool save_rax) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4357 | // Set up the frame structure on the stack. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4358 | // All constants are relative to the frame pointer of the exit frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4359 | DCHECK(ExitFrameConstants::kCallerSPDisplacement == |
| 4360 | kFPOnStackSize + kPCOnStackSize); |
| 4361 | DCHECK(ExitFrameConstants::kCallerPCOffset == kFPOnStackSize); |
| 4362 | DCHECK(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize); |
| 4363 | pushq(rbp); |
| 4364 | movp(rbp, rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4365 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4366 | // Reserve room for entry stack pointer and push the code object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4367 | DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
| 4368 | Push(Immediate(0)); // Saved entry sp, patched before call. |
| 4369 | Move(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 4370 | Push(kScratchRegister); // Accessed from EditFrame::code_slot. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4371 | |
| 4372 | // Save the frame pointer and the context in top. |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4373 | if (save_rax) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4374 | movp(r14, rax); // Backup rax in callee-save register. |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4375 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4376 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4377 | Store(ExternalReference(Isolate::kCEntryFPAddress, isolate()), rbp); |
| 4378 | Store(ExternalReference(Isolate::kContextAddress, isolate()), rsi); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4379 | Store(ExternalReference(Isolate::kCFunctionAddress, isolate()), rbx); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4380 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4381 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4382 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4383 | void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, |
| 4384 | bool save_doubles) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4385 | #ifdef _WIN64 |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4386 | const int kShadowSpace = 4; |
| 4387 | arg_stack_space += kShadowSpace; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4388 | #endif |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4389 | // Optionally save all XMM registers. |
| 4390 | if (save_doubles) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4391 | int space = XMMRegister::kMaxNumRegisters * kDoubleSize + |
| 4392 | arg_stack_space * kRegisterSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4393 | subp(rsp, Immediate(space)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4394 | int offset = -2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4395 | const RegisterConfiguration* config = |
| 4396 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
| 4397 | for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { |
| 4398 | DoubleRegister reg = |
| 4399 | DoubleRegister::from_code(config->GetAllocatableDoubleCode(i)); |
| 4400 | Movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4401 | } |
| 4402 | } else if (arg_stack_space > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4403 | subp(rsp, Immediate(arg_stack_space * kRegisterSize)); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4404 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4405 | |
| 4406 | // Get the required frame alignment for the OS. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4407 | const int kFrameAlignment = base::OS::ActivationFrameAlignment(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4408 | if (kFrameAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4409 | DCHECK(base::bits::IsPowerOfTwo32(kFrameAlignment)); |
| 4410 | DCHECK(is_int8(kFrameAlignment)); |
| 4411 | andp(rsp, Immediate(-kFrameAlignment)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4412 | } |
| 4413 | |
| 4414 | // Patch the saved entry sp. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4415 | movp(Operand(rbp, ExitFrameConstants::kSPOffset), rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4416 | } |
| 4417 | |
| 4418 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4419 | void MacroAssembler::EnterExitFrame(int arg_stack_space, bool save_doubles) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4420 | EnterExitFramePrologue(true); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4421 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4422 | // 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] | 4423 | // so it must be retained across the C-call. |
| 4424 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4425 | leap(r15, Operand(rbp, r14, times_pointer_size, offset)); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4426 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4427 | EnterExitFrameEpilogue(arg_stack_space, save_doubles); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4428 | } |
| 4429 | |
| 4430 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4431 | void MacroAssembler::EnterApiExitFrame(int arg_stack_space) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4432 | EnterExitFramePrologue(false); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4433 | EnterExitFrameEpilogue(arg_stack_space, false); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4434 | } |
| 4435 | |
| 4436 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4437 | void MacroAssembler::LeaveExitFrame(bool save_doubles, bool pop_arguments) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4438 | // Registers: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4439 | // r15 : argv |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4440 | if (save_doubles) { |
| 4441 | int offset = -2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4442 | const RegisterConfiguration* config = |
| 4443 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
| 4444 | for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { |
| 4445 | DoubleRegister reg = |
| 4446 | DoubleRegister::from_code(config->GetAllocatableDoubleCode(i)); |
| 4447 | Movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize))); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4448 | } |
| 4449 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4450 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4451 | if (pop_arguments) { |
| 4452 | // Get the return address from the stack and restore the frame pointer. |
| 4453 | movp(rcx, Operand(rbp, kFPOnStackSize)); |
| 4454 | movp(rbp, Operand(rbp, 0 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4455 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4456 | // Drop everything up to and including the arguments and the receiver |
| 4457 | // from the caller stack. |
| 4458 | leap(rsp, Operand(r15, 1 * kPointerSize)); |
| 4459 | |
| 4460 | PushReturnAddressFrom(rcx); |
| 4461 | } else { |
| 4462 | // Otherwise just leave the exit frame. |
| 4463 | leave(); |
| 4464 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4465 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4466 | LeaveExitFrameEpilogue(true); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4467 | } |
| 4468 | |
| 4469 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4470 | void MacroAssembler::LeaveApiExitFrame(bool restore_context) { |
| 4471 | movp(rsp, rbp); |
| 4472 | popq(rbp); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4473 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4474 | LeaveExitFrameEpilogue(restore_context); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4475 | } |
| 4476 | |
| 4477 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4478 | void MacroAssembler::LeaveExitFrameEpilogue(bool restore_context) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4479 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4480 | ExternalReference context_address(Isolate::kContextAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4481 | Operand context_operand = ExternalOperand(context_address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4482 | if (restore_context) { |
| 4483 | movp(rsi, context_operand); |
| 4484 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4485 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4486 | movp(context_operand, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4487 | #endif |
| 4488 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4489 | // Clear the top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4490 | ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4491 | isolate()); |
| 4492 | Operand c_entry_fp_operand = ExternalOperand(c_entry_fp_address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4493 | movp(c_entry_fp_operand, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4494 | } |
| 4495 | |
| 4496 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4497 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 4498 | Register scratch, |
| 4499 | Label* miss) { |
| 4500 | Label same_contexts; |
| 4501 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4502 | DCHECK(!holder_reg.is(scratch)); |
| 4503 | DCHECK(!scratch.is(kScratchRegister)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4504 | // Load current lexical context from the stack frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4505 | movp(scratch, Operand(rbp, StandardFrameConstants::kContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4506 | |
| 4507 | // When generating debug code, make sure the lexical context is set. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4508 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4509 | cmpp(scratch, Immediate(0)); |
| 4510 | Check(not_equal, kWeShouldNotHaveAnEmptyLexicalContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4511 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4512 | // Load the native context of the current context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4513 | movp(scratch, ContextOperand(scratch, Context::NATIVE_CONTEXT_INDEX)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4514 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4515 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4516 | if (emit_debug_code()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4517 | Cmp(FieldOperand(scratch, HeapObject::kMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4518 | isolate()->factory()->native_context_map()); |
| 4519 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4520 | } |
| 4521 | |
| 4522 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4523 | cmpp(scratch, FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4524 | j(equal, &same_contexts); |
| 4525 | |
| 4526 | // Compare security tokens. |
| 4527 | // Check that the security token in the calling global object is |
| 4528 | // compatible with the security token in the receiving global |
| 4529 | // object. |
| 4530 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4531 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4532 | if (emit_debug_code()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4533 | // Preserve original value of holder_reg. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4534 | Push(holder_reg); |
| 4535 | movp(holder_reg, |
| 4536 | FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4537 | CompareRoot(holder_reg, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4538 | Check(not_equal, kJSGlobalProxyContextShouldNotBeNull); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4539 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4540 | // Read the first word and compare to native_context_map(), |
| 4541 | movp(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset)); |
| 4542 | CompareRoot(holder_reg, Heap::kNativeContextMapRootIndex); |
| 4543 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
| 4544 | Pop(holder_reg); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4545 | } |
| 4546 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4547 | movp(kScratchRegister, |
| 4548 | FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4549 | int token_offset = |
| 4550 | Context::kHeaderSize + Context::SECURITY_TOKEN_INDEX * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4551 | movp(scratch, FieldOperand(scratch, token_offset)); |
| 4552 | cmpp(scratch, FieldOperand(kScratchRegister, token_offset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4553 | j(not_equal, miss); |
| 4554 | |
| 4555 | bind(&same_contexts); |
| 4556 | } |
| 4557 | |
| 4558 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4559 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 4560 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 4561 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4562 | void MacroAssembler::GetNumberHash(Register r0, Register scratch) { |
| 4563 | // First of all we assign the hash seed to scratch. |
| 4564 | LoadRoot(scratch, Heap::kHashSeedRootIndex); |
| 4565 | SmiToInteger32(scratch, scratch); |
| 4566 | |
| 4567 | // Xor original key with a seed. |
| 4568 | xorl(r0, scratch); |
| 4569 | |
| 4570 | // Compute the hash code from the untagged key. This must be kept in sync |
| 4571 | // with ComputeIntegerHash in utils.h. |
| 4572 | // |
| 4573 | // hash = ~hash + (hash << 15); |
| 4574 | movl(scratch, r0); |
| 4575 | notl(r0); |
| 4576 | shll(scratch, Immediate(15)); |
| 4577 | addl(r0, scratch); |
| 4578 | // hash = hash ^ (hash >> 12); |
| 4579 | movl(scratch, r0); |
| 4580 | shrl(scratch, Immediate(12)); |
| 4581 | xorl(r0, scratch); |
| 4582 | // hash = hash + (hash << 2); |
| 4583 | leal(r0, Operand(r0, r0, times_4, 0)); |
| 4584 | // hash = hash ^ (hash >> 4); |
| 4585 | movl(scratch, r0); |
| 4586 | shrl(scratch, Immediate(4)); |
| 4587 | xorl(r0, scratch); |
| 4588 | // hash = hash * 2057; |
| 4589 | imull(r0, r0, Immediate(2057)); |
| 4590 | // hash = hash ^ (hash >> 16); |
| 4591 | movl(scratch, r0); |
| 4592 | shrl(scratch, Immediate(16)); |
| 4593 | xorl(r0, scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4594 | andl(r0, Immediate(0x3fffffff)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4595 | } |
| 4596 | |
| 4597 | |
| 4598 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4599 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 4600 | Register elements, |
| 4601 | Register key, |
| 4602 | Register r0, |
| 4603 | Register r1, |
| 4604 | Register r2, |
| 4605 | Register result) { |
| 4606 | // Register use: |
| 4607 | // |
| 4608 | // elements - holds the slow-case elements of the receiver on entry. |
| 4609 | // Unchanged unless 'result' is the same register. |
| 4610 | // |
| 4611 | // key - holds the smi key on entry. |
| 4612 | // Unchanged unless 'result' is the same register. |
| 4613 | // |
| 4614 | // Scratch registers: |
| 4615 | // |
| 4616 | // r0 - holds the untagged key on entry and holds the hash once computed. |
| 4617 | // |
| 4618 | // r1 - used to hold the capacity mask of the dictionary |
| 4619 | // |
| 4620 | // r2 - used for the index into the dictionary. |
| 4621 | // |
| 4622 | // result - holds the result on exit if the load succeeded. |
| 4623 | // Allowed to be the same as 'key' or 'result'. |
| 4624 | // Unchanged on bailout so 'key' or 'result' can be used |
| 4625 | // in further computation. |
| 4626 | |
| 4627 | Label done; |
| 4628 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4629 | GetNumberHash(r0, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4630 | |
| 4631 | // Compute capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4632 | SmiToInteger32(r1, FieldOperand(elements, |
| 4633 | SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4634 | decl(r1); |
| 4635 | |
| 4636 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4637 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4638 | // Use r2 for index calculations and keep the hash intact in r0. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4639 | movp(r2, r0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4640 | // Compute the masked index: (hash + i + i * i) & mask. |
| 4641 | if (i > 0) { |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4642 | addl(r2, Immediate(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4643 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4644 | andp(r2, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4645 | |
| 4646 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4647 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
| 4648 | leap(r2, Operand(r2, r2, times_2, 0)); // r2 = r2 * 3 |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4649 | |
| 4650 | // Check if the key matches. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4651 | cmpp(key, FieldOperand(elements, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4652 | r2, |
| 4653 | times_pointer_size, |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4654 | SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4655 | if (i != (kNumberDictionaryProbes - 1)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4656 | j(equal, &done); |
| 4657 | } else { |
| 4658 | j(not_equal, miss); |
| 4659 | } |
| 4660 | } |
| 4661 | |
| 4662 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4663 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4664 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4665 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4666 | DCHECK_EQ(DATA, 0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4667 | Test(FieldOperand(elements, r2, times_pointer_size, kDetailsOffset), |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4668 | Smi::FromInt(PropertyDetails::TypeField::kMask)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4669 | j(not_zero, miss); |
| 4670 | |
| 4671 | // Get the value at the masked, scaled index. |
| 4672 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4673 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4674 | movp(result, FieldOperand(elements, r2, times_pointer_size, kValueOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4675 | } |
| 4676 | |
| 4677 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4678 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4679 | Register scratch, |
| 4680 | AllocationFlags flags) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4681 | ExternalReference allocation_top = |
| 4682 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4683 | |
| 4684 | // Just return if allocation top is already known. |
| 4685 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
| 4686 | // No use of scratch if allocation top is provided. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4687 | DCHECK(!scratch.is_valid()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4688 | #ifdef DEBUG |
| 4689 | // Assert that result actually contains top on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4690 | Operand top_operand = ExternalOperand(allocation_top); |
| 4691 | cmpp(result, top_operand); |
| 4692 | Check(equal, kUnexpectedAllocationTop); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4693 | #endif |
| 4694 | return; |
| 4695 | } |
| 4696 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4697 | // Move address of new object to result. Use scratch register if available, |
| 4698 | // and keep address in scratch until call to UpdateAllocationTopHelper. |
| 4699 | if (scratch.is_valid()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4700 | LoadAddress(scratch, allocation_top); |
| 4701 | movp(result, Operand(scratch, 0)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4702 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4703 | Load(result, allocation_top); |
| 4704 | } |
| 4705 | } |
| 4706 | |
| 4707 | |
| 4708 | void MacroAssembler::MakeSureDoubleAlignedHelper(Register result, |
| 4709 | Register scratch, |
| 4710 | Label* gc_required, |
| 4711 | AllocationFlags flags) { |
| 4712 | if (kPointerSize == kDoubleSize) { |
| 4713 | if (FLAG_debug_code) { |
| 4714 | testl(result, Immediate(kDoubleAlignmentMask)); |
| 4715 | Check(zero, kAllocationIsNotDoubleAligned); |
| 4716 | } |
| 4717 | } else { |
| 4718 | // Align the next allocation. Storing the filler map without checking top |
| 4719 | // is safe in new-space because the limit of the heap is aligned there. |
| 4720 | DCHECK(kPointerSize * 2 == kDoubleSize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4721 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 4722 | // Make sure scratch is not clobbered by this function as it might be |
| 4723 | // used in UpdateAllocationTopHelper later. |
| 4724 | DCHECK(!scratch.is(kScratchRegister)); |
| 4725 | Label aligned; |
| 4726 | testl(result, Immediate(kDoubleAlignmentMask)); |
| 4727 | j(zero, &aligned, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4728 | if ((flags & PRETENURE) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4729 | ExternalReference allocation_limit = |
| 4730 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4731 | cmpp(result, ExternalOperand(allocation_limit)); |
| 4732 | j(above_equal, gc_required); |
| 4733 | } |
| 4734 | LoadRoot(kScratchRegister, Heap::kOnePointerFillerMapRootIndex); |
| 4735 | movp(Operand(result, 0), kScratchRegister); |
| 4736 | addp(result, Immediate(kDoubleSize / 2)); |
| 4737 | bind(&aligned); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4738 | } |
| 4739 | } |
| 4740 | |
| 4741 | |
| 4742 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4743 | Register scratch, |
| 4744 | AllocationFlags flags) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4745 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4746 | testp(result_end, Immediate(kObjectAlignmentMask)); |
| 4747 | Check(zero, kUnalignedAllocationInNewSpace); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 4748 | } |
| 4749 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4750 | ExternalReference allocation_top = |
| 4751 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4752 | |
| 4753 | // Update new top. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4754 | if (scratch.is_valid()) { |
| 4755 | // Scratch already contains address of allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4756 | movp(Operand(scratch, 0), result_end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4757 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4758 | Store(allocation_top, result_end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4759 | } |
| 4760 | } |
| 4761 | |
| 4762 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4763 | void MacroAssembler::Allocate(int object_size, |
| 4764 | Register result, |
| 4765 | Register result_end, |
| 4766 | Register scratch, |
| 4767 | Label* gc_required, |
| 4768 | AllocationFlags flags) { |
| 4769 | DCHECK((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0); |
| 4770 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4771 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4772 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4773 | // Trash the registers to simulate an allocation failure. |
| 4774 | movl(result, Immediate(0x7091)); |
| 4775 | if (result_end.is_valid()) { |
| 4776 | movl(result_end, Immediate(0x7191)); |
| 4777 | } |
| 4778 | if (scratch.is_valid()) { |
| 4779 | movl(scratch, Immediate(0x7291)); |
| 4780 | } |
| 4781 | } |
| 4782 | jmp(gc_required); |
| 4783 | return; |
| 4784 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4785 | DCHECK(!result.is(result_end)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4786 | |
| 4787 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4788 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4789 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4790 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4791 | MakeSureDoubleAlignedHelper(result, scratch, gc_required, flags); |
| 4792 | } |
| 4793 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4794 | // Calculate new top and bail out if new space is exhausted. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4795 | ExternalReference allocation_limit = |
| 4796 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4797 | |
| 4798 | Register top_reg = result_end.is_valid() ? result_end : result; |
| 4799 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4800 | if (!top_reg.is(result)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4801 | movp(top_reg, result); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4802 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4803 | addp(top_reg, Immediate(object_size)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4804 | j(carry, gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4805 | Operand limit_operand = ExternalOperand(allocation_limit); |
| 4806 | cmpp(top_reg, limit_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4807 | j(above, gc_required); |
| 4808 | |
| 4809 | // Update allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4810 | UpdateAllocationTopHelper(top_reg, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4811 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4812 | bool tag_result = (flags & TAG_OBJECT) != 0; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4813 | if (top_reg.is(result)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4814 | if (tag_result) { |
| 4815 | subp(result, Immediate(object_size - kHeapObjectTag)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4816 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4817 | subp(result, Immediate(object_size)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4818 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4819 | } else if (tag_result) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4820 | // Tag the result if requested. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4821 | DCHECK(kHeapObjectTag == 1); |
| 4822 | incp(result); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4823 | } |
| 4824 | } |
| 4825 | |
| 4826 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4827 | void MacroAssembler::Allocate(int header_size, |
| 4828 | ScaleFactor element_size, |
| 4829 | Register element_count, |
| 4830 | Register result, |
| 4831 | Register result_end, |
| 4832 | Register scratch, |
| 4833 | Label* gc_required, |
| 4834 | AllocationFlags flags) { |
| 4835 | DCHECK((flags & SIZE_IN_WORDS) == 0); |
| 4836 | leap(result_end, Operand(element_count, element_size, header_size)); |
| 4837 | Allocate(result_end, result, result_end, scratch, gc_required, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4838 | } |
| 4839 | |
| 4840 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4841 | void MacroAssembler::Allocate(Register object_size, |
| 4842 | Register result, |
| 4843 | Register result_end, |
| 4844 | Register scratch, |
| 4845 | Label* gc_required, |
| 4846 | AllocationFlags flags) { |
| 4847 | DCHECK((flags & SIZE_IN_WORDS) == 0); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4848 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4849 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4850 | // Trash the registers to simulate an allocation failure. |
| 4851 | movl(result, Immediate(0x7091)); |
| 4852 | movl(result_end, Immediate(0x7191)); |
| 4853 | if (scratch.is_valid()) { |
| 4854 | movl(scratch, Immediate(0x7291)); |
| 4855 | } |
| 4856 | // object_size is left unchanged by this function. |
| 4857 | } |
| 4858 | jmp(gc_required); |
| 4859 | return; |
| 4860 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4861 | DCHECK(!result.is(result_end)); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4862 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4863 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4864 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4865 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4866 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4867 | MakeSureDoubleAlignedHelper(result, scratch, gc_required, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4868 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4869 | |
| 4870 | // Calculate new top and bail out if new space is exhausted. |
| 4871 | ExternalReference allocation_limit = |
| 4872 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4873 | if (!object_size.is(result_end)) { |
| 4874 | movp(result_end, object_size); |
| 4875 | } |
| 4876 | addp(result_end, result); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4877 | j(carry, gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4878 | Operand limit_operand = ExternalOperand(allocation_limit); |
| 4879 | cmpp(result_end, limit_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4880 | j(above, gc_required); |
| 4881 | |
| 4882 | // Update allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4883 | UpdateAllocationTopHelper(result_end, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4884 | |
| 4885 | // Tag the result if requested. |
| 4886 | if ((flags & TAG_OBJECT) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4887 | addp(result, Immediate(kHeapObjectTag)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4888 | } |
| 4889 | } |
| 4890 | |
| 4891 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4892 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 4893 | Register scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4894 | Label* gc_required, |
| 4895 | MutableMode mode) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4896 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4897 | Allocate(HeapNumber::kSize, result, scratch, no_reg, gc_required, TAG_OBJECT); |
| 4898 | |
| 4899 | Heap::RootListIndex map_index = mode == MUTABLE |
| 4900 | ? Heap::kMutableHeapNumberMapRootIndex |
| 4901 | : Heap::kHeapNumberMapRootIndex; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4902 | |
| 4903 | // Set the map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4904 | LoadRoot(kScratchRegister, map_index); |
| 4905 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4906 | } |
| 4907 | |
| 4908 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4909 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 4910 | Register length, |
| 4911 | Register scratch1, |
| 4912 | Register scratch2, |
| 4913 | Register scratch3, |
| 4914 | Label* gc_required) { |
| 4915 | // Calculate the number of bytes needed for the characters in the string while |
| 4916 | // observing object alignment. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4917 | const int kHeaderAlignment = SeqTwoByteString::kHeaderSize & |
| 4918 | kObjectAlignmentMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4919 | DCHECK(kShortSize == 2); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4920 | // scratch1 = length * 2 + kObjectAlignmentMask. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4921 | leap(scratch1, Operand(length, length, times_1, kObjectAlignmentMask + |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4922 | kHeaderAlignment)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4923 | andp(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4924 | if (kHeaderAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4925 | subp(scratch1, Immediate(kHeaderAlignment)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4926 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4927 | |
| 4928 | // Allocate two byte string in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4929 | Allocate(SeqTwoByteString::kHeaderSize, |
| 4930 | times_1, |
| 4931 | scratch1, |
| 4932 | result, |
| 4933 | scratch2, |
| 4934 | scratch3, |
| 4935 | gc_required, |
| 4936 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4937 | |
| 4938 | // Set the map, length and hash field. |
| 4939 | LoadRoot(kScratchRegister, Heap::kStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4940 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4941 | Integer32ToSmi(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4942 | movp(FieldOperand(result, String::kLengthOffset), scratch1); |
| 4943 | movp(FieldOperand(result, String::kHashFieldOffset), |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4944 | Immediate(String::kEmptyHashField)); |
| 4945 | } |
| 4946 | |
| 4947 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4948 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 4949 | Register scratch1, Register scratch2, |
| 4950 | Register scratch3, |
| 4951 | Label* gc_required) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4952 | // Calculate the number of bytes needed for the characters in the string while |
| 4953 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4954 | const int kHeaderAlignment = SeqOneByteString::kHeaderSize & |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4955 | kObjectAlignmentMask; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4956 | movl(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4957 | DCHECK(kCharSize == 1); |
| 4958 | addp(scratch1, Immediate(kObjectAlignmentMask + kHeaderAlignment)); |
| 4959 | andp(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4960 | if (kHeaderAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4961 | subp(scratch1, Immediate(kHeaderAlignment)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4962 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4963 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4964 | // Allocate one-byte string in new space. |
| 4965 | Allocate(SeqOneByteString::kHeaderSize, |
| 4966 | times_1, |
| 4967 | scratch1, |
| 4968 | result, |
| 4969 | scratch2, |
| 4970 | scratch3, |
| 4971 | gc_required, |
| 4972 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4973 | |
| 4974 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4975 | LoadRoot(kScratchRegister, Heap::kOneByteStringMapRootIndex); |
| 4976 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4977 | Integer32ToSmi(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4978 | movp(FieldOperand(result, String::kLengthOffset), scratch1); |
| 4979 | movp(FieldOperand(result, String::kHashFieldOffset), |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4980 | Immediate(String::kEmptyHashField)); |
| 4981 | } |
| 4982 | |
| 4983 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4984 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4985 | Register scratch1, |
| 4986 | Register scratch2, |
| 4987 | Label* gc_required) { |
| 4988 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4989 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 4990 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4991 | |
| 4992 | // Set the map. The other fields are left uninitialized. |
| 4993 | LoadRoot(kScratchRegister, Heap::kConsStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4994 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4995 | } |
| 4996 | |
| 4997 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4998 | void MacroAssembler::AllocateOneByteConsString(Register result, |
| 4999 | Register scratch1, |
| 5000 | Register scratch2, |
| 5001 | Label* gc_required) { |
| 5002 | Allocate(ConsString::kSize, |
| 5003 | result, |
| 5004 | scratch1, |
| 5005 | scratch2, |
| 5006 | gc_required, |
| 5007 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5008 | |
| 5009 | // Set the map. The other fields are left uninitialized. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5010 | LoadRoot(kScratchRegister, Heap::kConsOneByteStringMapRootIndex); |
| 5011 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 5012 | } |
| 5013 | |
| 5014 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5015 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 5016 | Register scratch1, |
| 5017 | Register scratch2, |
| 5018 | Label* gc_required) { |
| 5019 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5020 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 5021 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5022 | |
| 5023 | // Set the map. The other fields are left uninitialized. |
| 5024 | LoadRoot(kScratchRegister, Heap::kSlicedStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5025 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5026 | } |
| 5027 | |
| 5028 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5029 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 5030 | Register scratch1, |
| 5031 | Register scratch2, |
| 5032 | Label* gc_required) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5033 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5034 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 5035 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5036 | |
| 5037 | // Set the map. The other fields are left uninitialized. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5038 | LoadRoot(kScratchRegister, Heap::kSlicedOneByteStringMapRootIndex); |
| 5039 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 5040 | } |
| 5041 | |
| 5042 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5043 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 5044 | Register value, Register scratch, |
| 5045 | Label* gc_required) { |
| 5046 | DCHECK(!result.is(constructor)); |
| 5047 | DCHECK(!result.is(scratch)); |
| 5048 | DCHECK(!result.is(value)); |
| 5049 | |
| 5050 | // Allocate JSValue in new space. |
| 5051 | Allocate(JSValue::kSize, result, scratch, no_reg, gc_required, TAG_OBJECT); |
| 5052 | |
| 5053 | // Initialize the JSValue. |
| 5054 | LoadGlobalFunctionInitialMap(constructor, scratch); |
| 5055 | movp(FieldOperand(result, HeapObject::kMapOffset), scratch); |
| 5056 | LoadRoot(scratch, Heap::kEmptyFixedArrayRootIndex); |
| 5057 | movp(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 5058 | movp(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 5059 | movp(FieldOperand(result, JSValue::kValueOffset), value); |
| 5060 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
| 5061 | } |
| 5062 | |
| 5063 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5064 | // Copy memory, byte-by-byte, from source to destination. Not optimized for |
| 5065 | // long or aligned copies. The contents of scratch and length are destroyed. |
| 5066 | // Destination is incremented by length, source, length and scratch are |
| 5067 | // clobbered. |
| 5068 | // A simpler loop is faster on small copies, but slower on large ones. |
| 5069 | // The cld() instruction must have been emitted, to set the direction flag(), |
| 5070 | // before calling this function. |
| 5071 | void MacroAssembler::CopyBytes(Register destination, |
| 5072 | Register source, |
| 5073 | Register length, |
| 5074 | int min_length, |
| 5075 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5076 | DCHECK(min_length >= 0); |
| 5077 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5078 | cmpl(length, Immediate(min_length)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5079 | Assert(greater_equal, kInvalidMinLength); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5080 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5081 | Label short_loop, len8, len16, len24, done, short_string; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5082 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5083 | const int kLongStringLimit = 4 * kPointerSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5084 | if (min_length <= kLongStringLimit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5085 | cmpl(length, Immediate(kPointerSize)); |
| 5086 | j(below, &short_string, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5087 | } |
| 5088 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5089 | DCHECK(source.is(rsi)); |
| 5090 | DCHECK(destination.is(rdi)); |
| 5091 | DCHECK(length.is(rcx)); |
| 5092 | |
| 5093 | if (min_length <= kLongStringLimit) { |
| 5094 | cmpl(length, Immediate(2 * kPointerSize)); |
| 5095 | j(below_equal, &len8, Label::kNear); |
| 5096 | cmpl(length, Immediate(3 * kPointerSize)); |
| 5097 | j(below_equal, &len16, Label::kNear); |
| 5098 | cmpl(length, Immediate(4 * kPointerSize)); |
| 5099 | j(below_equal, &len24, Label::kNear); |
| 5100 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5101 | |
| 5102 | // Because source is 8-byte aligned in our uses of this function, |
| 5103 | // we keep source aligned for the rep movs operation by copying the odd bytes |
| 5104 | // at the end of the ranges. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5105 | movp(scratch, length); |
| 5106 | shrl(length, Immediate(kPointerSizeLog2)); |
| 5107 | repmovsp(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5108 | // Move remaining bytes of length. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5109 | andl(scratch, Immediate(kPointerSize - 1)); |
| 5110 | movp(length, Operand(source, scratch, times_1, -kPointerSize)); |
| 5111 | movp(Operand(destination, scratch, times_1, -kPointerSize), length); |
| 5112 | addp(destination, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5113 | |
| 5114 | if (min_length <= kLongStringLimit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5115 | jmp(&done, Label::kNear); |
| 5116 | bind(&len24); |
| 5117 | movp(scratch, Operand(source, 2 * kPointerSize)); |
| 5118 | movp(Operand(destination, 2 * kPointerSize), scratch); |
| 5119 | bind(&len16); |
| 5120 | movp(scratch, Operand(source, kPointerSize)); |
| 5121 | movp(Operand(destination, kPointerSize), scratch); |
| 5122 | bind(&len8); |
| 5123 | movp(scratch, Operand(source, 0)); |
| 5124 | movp(Operand(destination, 0), scratch); |
| 5125 | // Move remaining bytes of length. |
| 5126 | movp(scratch, Operand(source, length, times_1, -kPointerSize)); |
| 5127 | movp(Operand(destination, length, times_1, -kPointerSize), scratch); |
| 5128 | addp(destination, length); |
| 5129 | jmp(&done, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5130 | |
| 5131 | bind(&short_string); |
| 5132 | if (min_length == 0) { |
| 5133 | testl(length, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5134 | j(zero, &done, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5135 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5136 | |
| 5137 | bind(&short_loop); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5138 | movb(scratch, Operand(source, 0)); |
| 5139 | movb(Operand(destination, 0), scratch); |
| 5140 | incp(source); |
| 5141 | incp(destination); |
| 5142 | decl(length); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5143 | j(not_zero, &short_loop, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5144 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5145 | |
| 5146 | bind(&done); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5147 | } |
| 5148 | |
| 5149 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5150 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 5151 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5152 | Register filler) { |
| 5153 | Label loop, entry; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5154 | jmp(&entry, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5155 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5156 | movp(Operand(current_address, 0), filler); |
| 5157 | addp(current_address, Immediate(kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5158 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5159 | cmpp(current_address, end_address); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5160 | j(below, &loop, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5161 | } |
| 5162 | |
| 5163 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5164 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 5165 | if (context_chain_length > 0) { |
| 5166 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5167 | movp(dst, Operand(rsi, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5168 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5169 | movp(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5170 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5171 | } else { |
| 5172 | // Slot is in the current function context. Move it into the |
| 5173 | // destination register in case we store into it (the write barrier |
| 5174 | // cannot be allowed to destroy the context in rsi). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5175 | movp(dst, rsi); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5176 | } |
| 5177 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5178 | // We should not have found a with context by walking the context |
| 5179 | // chain (i.e., the static scope chain and runtime context chain do |
| 5180 | // not agree). A variable occurring in such a scope should have |
| 5181 | // slot type LOOKUP and not CONTEXT. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5182 | if (emit_debug_code()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5183 | CompareRoot(FieldOperand(dst, HeapObject::kMapOffset), |
| 5184 | Heap::kWithContextMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5185 | Check(not_equal, kVariableResolvedToWithContext); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5186 | } |
| 5187 | } |
| 5188 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5189 | |
| 5190 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 5191 | ElementsKind expected_kind, |
| 5192 | ElementsKind transitioned_kind, |
| 5193 | Register map_in_out, |
| 5194 | Register scratch, |
| 5195 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5196 | DCHECK(IsFastElementsKind(expected_kind)); |
| 5197 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5198 | |
| 5199 | // 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] | 5200 | movp(scratch, NativeContextOperand()); |
| 5201 | cmpp(map_in_out, |
| 5202 | ContextOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5203 | j(not_equal, no_map_match); |
| 5204 | |
| 5205 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5206 | movp(map_in_out, |
| 5207 | ContextOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5208 | } |
| 5209 | |
| 5210 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5211 | #ifdef _WIN64 |
| 5212 | static const int kRegisterPassedArguments = 4; |
| 5213 | #else |
| 5214 | static const int kRegisterPassedArguments = 6; |
| 5215 | #endif |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5216 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5217 | |
| 5218 | void MacroAssembler::LoadNativeContextSlot(int index, Register dst) { |
| 5219 | movp(dst, NativeContextOperand()); |
| 5220 | movp(dst, ContextOperand(dst, index)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5221 | } |
| 5222 | |
| 5223 | |
| 5224 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 5225 | Register map) { |
| 5226 | // Load the initial map. The global functions all have initial maps. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5227 | movp(map, FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5228 | if (emit_debug_code()) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5229 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5230 | CheckMap(map, isolate()->factory()->meta_map(), &fail, DO_SMI_CHECK); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5231 | jmp(&ok); |
| 5232 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5233 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5234 | bind(&ok); |
| 5235 | } |
| 5236 | } |
| 5237 | |
| 5238 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5239 | int MacroAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5240 | // On Windows 64 stack slots are reserved by the caller for all arguments |
| 5241 | // including the ones passed in registers, and space is always allocated for |
| 5242 | // the four register arguments even if the function takes fewer than four |
| 5243 | // arguments. |
| 5244 | // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers |
| 5245 | // and the caller does not reserve stack slots for them. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5246 | DCHECK(num_arguments >= 0); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5247 | #ifdef _WIN64 |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5248 | const int kMinimumStackSlots = kRegisterPassedArguments; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5249 | if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
| 5250 | return num_arguments; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5251 | #else |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5252 | if (num_arguments < kRegisterPassedArguments) return 0; |
| 5253 | return num_arguments - kRegisterPassedArguments; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5254 | #endif |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5255 | } |
| 5256 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5257 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5258 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 5259 | Register index, |
| 5260 | Register value, |
| 5261 | uint32_t encoding_mask) { |
| 5262 | Label is_object; |
| 5263 | JumpIfNotSmi(string, &is_object); |
| 5264 | Abort(kNonObject); |
| 5265 | bind(&is_object); |
| 5266 | |
| 5267 | Push(value); |
| 5268 | movp(value, FieldOperand(string, HeapObject::kMapOffset)); |
| 5269 | movzxbp(value, FieldOperand(value, Map::kInstanceTypeOffset)); |
| 5270 | |
| 5271 | andb(value, Immediate(kStringRepresentationMask | kStringEncodingMask)); |
| 5272 | cmpp(value, Immediate(encoding_mask)); |
| 5273 | Pop(value); |
| 5274 | Check(equal, kUnexpectedStringType); |
| 5275 | |
| 5276 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 5277 | // string length without using a temp register, it is restored at the end of |
| 5278 | // this function. |
| 5279 | Integer32ToSmi(index, index); |
| 5280 | SmiCompare(index, FieldOperand(string, String::kLengthOffset)); |
| 5281 | Check(less, kIndexIsTooLarge); |
| 5282 | |
| 5283 | SmiCompare(index, Smi::FromInt(0)); |
| 5284 | Check(greater_equal, kIndexIsNegative); |
| 5285 | |
| 5286 | // Restore the index |
| 5287 | SmiToInteger32(index, index); |
| 5288 | } |
| 5289 | |
| 5290 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5291 | void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5292 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
| 5293 | DCHECK(frame_alignment != 0); |
| 5294 | DCHECK(num_arguments >= 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5295 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5296 | // 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] | 5297 | movp(kScratchRegister, rsp); |
| 5298 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5299 | int argument_slots_on_stack = |
| 5300 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5301 | subp(rsp, Immediate((argument_slots_on_stack + 1) * kRegisterSize)); |
| 5302 | andp(rsp, Immediate(-frame_alignment)); |
| 5303 | movp(Operand(rsp, argument_slots_on_stack * kRegisterSize), kScratchRegister); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5304 | } |
| 5305 | |
| 5306 | |
| 5307 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 5308 | int num_arguments) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5309 | LoadAddress(rax, function); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5310 | CallCFunction(rax, num_arguments); |
| 5311 | } |
| 5312 | |
| 5313 | |
| 5314 | void MacroAssembler::CallCFunction(Register function, int num_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5315 | DCHECK(has_frame()); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5316 | // Check stack alignment. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5317 | if (emit_debug_code()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5318 | CheckStackAlignment(); |
| 5319 | } |
| 5320 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5321 | call(function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5322 | DCHECK(base::OS::ActivationFrameAlignment() != 0); |
| 5323 | DCHECK(num_arguments >= 0); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5324 | int argument_slots_on_stack = |
| 5325 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5326 | movp(rsp, Operand(rsp, argument_slots_on_stack * kRegisterSize)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5327 | } |
| 5328 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5329 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5330 | #ifdef DEBUG |
| 5331 | bool AreAliased(Register reg1, |
| 5332 | Register reg2, |
| 5333 | Register reg3, |
| 5334 | Register reg4, |
| 5335 | Register reg5, |
| 5336 | Register reg6, |
| 5337 | Register reg7, |
| 5338 | Register reg8) { |
| 5339 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + |
| 5340 | reg3.is_valid() + reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 5341 | reg7.is_valid() + reg8.is_valid(); |
| 5342 | |
| 5343 | RegList regs = 0; |
| 5344 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 5345 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 5346 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 5347 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 5348 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 5349 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 5350 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 5351 | if (reg8.is_valid()) regs |= reg8.bit(); |
| 5352 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 5353 | |
| 5354 | return n_of_valid_regs != n_of_non_aliasing_regs; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5355 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5356 | #endif |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5357 | |
| 5358 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5359 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int size) |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 5360 | : address_(address), |
| 5361 | size_(size), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5362 | masm_(isolate, address, size + Assembler::kGap, CodeObjectRequired::kNo) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5363 | // Create a new macro assembler pointing to the address of the code to patch. |
| 5364 | // The size is adjusted with kGap on order for the assembler to generate size |
| 5365 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5366 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5367 | } |
| 5368 | |
| 5369 | |
| 5370 | CodePatcher::~CodePatcher() { |
| 5371 | // Indicate that code has changed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5372 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5373 | |
| 5374 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5375 | DCHECK(masm_.pc_ == address_ + size_); |
| 5376 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5377 | } |
| 5378 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5379 | |
| 5380 | void MacroAssembler::CheckPageFlag( |
| 5381 | Register object, |
| 5382 | Register scratch, |
| 5383 | int mask, |
| 5384 | Condition cc, |
| 5385 | Label* condition_met, |
| 5386 | Label::Distance condition_met_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5387 | DCHECK(cc == zero || cc == not_zero); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5388 | if (scratch.is(object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5389 | andp(scratch, Immediate(~Page::kPageAlignmentMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5390 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5391 | movp(scratch, Immediate(~Page::kPageAlignmentMask)); |
| 5392 | andp(scratch, object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5393 | } |
| 5394 | if (mask < (1 << kBitsPerByte)) { |
| 5395 | testb(Operand(scratch, MemoryChunk::kFlagsOffset), |
| 5396 | Immediate(static_cast<uint8_t>(mask))); |
| 5397 | } else { |
| 5398 | testl(Operand(scratch, MemoryChunk::kFlagsOffset), Immediate(mask)); |
| 5399 | } |
| 5400 | j(cc, condition_met, condition_met_distance); |
| 5401 | } |
| 5402 | |
| 5403 | |
| 5404 | void MacroAssembler::JumpIfBlack(Register object, |
| 5405 | Register bitmap_scratch, |
| 5406 | Register mask_scratch, |
| 5407 | Label* on_black, |
| 5408 | Label::Distance on_black_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5409 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, rcx)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5410 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5411 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 5412 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5413 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5414 | // 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] | 5415 | // 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] | 5416 | movp(rcx, mask_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5417 | andp(rcx, Operand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5418 | cmpp(mask_scratch, rcx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5419 | j(equal, on_black, on_black_distance); |
| 5420 | } |
| 5421 | |
| 5422 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5423 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 5424 | Register bitmap_reg, |
| 5425 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5426 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, rcx)); |
| 5427 | movp(bitmap_reg, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5428 | // Sign extended 32 bit immediate. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5429 | andp(bitmap_reg, Immediate(~Page::kPageAlignmentMask)); |
| 5430 | movp(rcx, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5431 | int shift = |
| 5432 | Bitmap::kBitsPerCellLog2 + kPointerSizeLog2 - Bitmap::kBytesPerCellLog2; |
| 5433 | shrl(rcx, Immediate(shift)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5434 | andp(rcx, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5435 | Immediate((Page::kPageAlignmentMask >> shift) & |
| 5436 | ~(Bitmap::kBytesPerCell - 1))); |
| 5437 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5438 | addp(bitmap_reg, rcx); |
| 5439 | movp(rcx, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5440 | shrl(rcx, Immediate(kPointerSizeLog2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5441 | andp(rcx, Immediate((1 << Bitmap::kBitsPerCellLog2) - 1)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5442 | movl(mask_reg, Immediate(3)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5443 | shlp_cl(mask_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5444 | } |
| 5445 | |
| 5446 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5447 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 5448 | Register mask_scratch, Label* value_is_white, |
| 5449 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5450 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, rcx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5451 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 5452 | |
| 5453 | // 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] | 5454 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5455 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 5456 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5457 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5458 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5459 | // Since both black and grey have a 1 in the first position and white does |
| 5460 | // not have a 1 there we only need to check one bit. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5461 | testp(Operand(bitmap_scratch, MemoryChunk::kHeaderSize), mask_scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5462 | j(zero, value_is_white, distance); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5463 | } |
| 5464 | |
| 5465 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5466 | void MacroAssembler::CheckEnumCache(Label* call_runtime) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5467 | Label next, start; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5468 | Register empty_fixed_array_value = r8; |
| 5469 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5470 | movp(rcx, rax); |
| 5471 | |
| 5472 | // Check if the enum length field is properly initialized, indicating that |
| 5473 | // there is an enum cache. |
| 5474 | movp(rbx, FieldOperand(rcx, HeapObject::kMapOffset)); |
| 5475 | |
| 5476 | EnumLength(rdx, rbx); |
| 5477 | Cmp(rdx, Smi::FromInt(kInvalidEnumCacheSentinel)); |
| 5478 | j(equal, call_runtime); |
| 5479 | |
| 5480 | jmp(&start); |
| 5481 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5482 | bind(&next); |
| 5483 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5484 | movp(rbx, FieldOperand(rcx, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5485 | |
| 5486 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5487 | EnumLength(rdx, rbx); |
| 5488 | Cmp(rdx, Smi::FromInt(0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5489 | j(not_equal, call_runtime); |
| 5490 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5491 | bind(&start); |
| 5492 | |
| 5493 | // Check that there are no elements. Register rcx contains the current JS |
| 5494 | // object we've reached through the prototype chain. |
| 5495 | Label no_elements; |
| 5496 | cmpp(empty_fixed_array_value, |
| 5497 | FieldOperand(rcx, JSObject::kElementsOffset)); |
| 5498 | j(equal, &no_elements); |
| 5499 | |
| 5500 | // Second chance, the object may be using the empty slow element dictionary. |
| 5501 | LoadRoot(kScratchRegister, Heap::kEmptySlowElementDictionaryRootIndex); |
| 5502 | cmpp(kScratchRegister, FieldOperand(rcx, JSObject::kElementsOffset)); |
| 5503 | j(not_equal, call_runtime); |
| 5504 | |
| 5505 | bind(&no_elements); |
| 5506 | movp(rcx, FieldOperand(rbx, Map::kPrototypeOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5507 | CompareRoot(rcx, Heap::kNullValueRootIndex); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5508 | j(not_equal, &next); |
| 5509 | } |
| 5510 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 5511 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5512 | void MacroAssembler::TestJSArrayForAllocationMemento( |
| 5513 | Register receiver_reg, |
| 5514 | Register scratch_reg, |
| 5515 | Label* no_memento_found) { |
| 5516 | ExternalReference new_space_start = |
| 5517 | ExternalReference::new_space_start(isolate()); |
| 5518 | ExternalReference new_space_allocation_top = |
| 5519 | ExternalReference::new_space_allocation_top_address(isolate()); |
| 5520 | |
| 5521 | leap(scratch_reg, Operand(receiver_reg, |
| 5522 | JSArray::kSize + AllocationMemento::kSize - kHeapObjectTag)); |
| 5523 | Move(kScratchRegister, new_space_start); |
| 5524 | cmpp(scratch_reg, kScratchRegister); |
| 5525 | j(less, no_memento_found); |
| 5526 | cmpp(scratch_reg, ExternalOperand(new_space_allocation_top)); |
| 5527 | j(greater, no_memento_found); |
| 5528 | CompareRoot(MemOperand(scratch_reg, -AllocationMemento::kSize), |
| 5529 | Heap::kAllocationMementoMapRootIndex); |
| 5530 | } |
| 5531 | |
| 5532 | |
| 5533 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 5534 | Register object, |
| 5535 | Register scratch0, |
| 5536 | Register scratch1, |
| 5537 | Label* found) { |
| 5538 | DCHECK(!(scratch0.is(kScratchRegister) && scratch1.is(kScratchRegister))); |
| 5539 | DCHECK(!scratch1.is(scratch0)); |
| 5540 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5541 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5542 | |
| 5543 | movp(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5544 | movp(current, FieldOperand(current, HeapObject::kMapOffset)); |
| 5545 | movp(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 5546 | CompareRoot(current, Heap::kNullValueRootIndex); |
| 5547 | j(equal, &end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5548 | |
| 5549 | // Loop based on the map going up the prototype chain. |
| 5550 | bind(&loop_again); |
| 5551 | movp(current, FieldOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5552 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 5553 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 5554 | CmpInstanceType(current, JS_OBJECT_TYPE); |
| 5555 | j(below, found); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5556 | movp(scratch1, FieldOperand(current, Map::kBitField2Offset)); |
| 5557 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 5558 | cmpp(scratch1, Immediate(DICTIONARY_ELEMENTS)); |
| 5559 | j(equal, found); |
| 5560 | movp(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 5561 | CompareRoot(current, Heap::kNullValueRootIndex); |
| 5562 | j(not_equal, &loop_again); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5563 | |
| 5564 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5565 | } |
| 5566 | |
| 5567 | |
| 5568 | void MacroAssembler::TruncatingDiv(Register dividend, int32_t divisor) { |
| 5569 | DCHECK(!dividend.is(rax)); |
| 5570 | DCHECK(!dividend.is(rdx)); |
| 5571 | base::MagicNumbersForDivision<uint32_t> mag = |
| 5572 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 5573 | movl(rax, Immediate(mag.multiplier)); |
| 5574 | imull(dividend); |
| 5575 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 5576 | if (divisor > 0 && neg) addl(rdx, dividend); |
| 5577 | if (divisor < 0 && !neg && mag.multiplier > 0) subl(rdx, dividend); |
| 5578 | if (mag.shift > 0) sarl(rdx, Immediate(mag.shift)); |
| 5579 | movl(rax, dividend); |
| 5580 | shrl(rax, Immediate(31)); |
| 5581 | addl(rdx, rax); |
| 5582 | } |
| 5583 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5584 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5585 | } // namespace internal |
| 5586 | } // namespace v8 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 5587 | |
| 5588 | #endif // V8_TARGET_ARCH_X64 |