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 | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 254 | if (serializer_enabled()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 255 | // Can't do arithmetic on external references if it might get serialized. |
| 256 | // The mask isn't really an address. We load it as an external reference in |
| 257 | // case the size of the new space is different between the snapshot maker |
| 258 | // and the running system. |
| 259 | if (scratch.is(object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 260 | Move(kScratchRegister, ExternalReference::new_space_mask(isolate())); |
| 261 | andp(scratch, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 262 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 263 | Move(scratch, ExternalReference::new_space_mask(isolate())); |
| 264 | andp(scratch, object); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 265 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 266 | Move(kScratchRegister, ExternalReference::new_space_start(isolate())); |
| 267 | cmpp(scratch, kScratchRegister); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 268 | j(cc, branch, distance); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 269 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 270 | DCHECK(kPointerSize == kInt64Size |
| 271 | ? is_int32(static_cast<int64_t>(isolate()->heap()->NewSpaceMask())) |
| 272 | : kPointerSize == kInt32Size); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 273 | intptr_t new_space_start = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 274 | reinterpret_cast<intptr_t>(isolate()->heap()->NewSpaceStart()); |
| 275 | Move(kScratchRegister, reinterpret_cast<Address>(-new_space_start), |
| 276 | Assembler::RelocInfoNone()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 277 | if (scratch.is(object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 278 | addp(scratch, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 279 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 280 | leap(scratch, Operand(object, kScratchRegister, times_1, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 281 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | andp(scratch, |
| 283 | Immediate(static_cast<int32_t>(isolate()->heap()->NewSpaceMask()))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 284 | j(cc, branch, distance); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 285 | } |
| 286 | } |
| 287 | |
| 288 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 289 | void MacroAssembler::RecordWriteField( |
| 290 | Register object, |
| 291 | int offset, |
| 292 | Register value, |
| 293 | Register dst, |
| 294 | SaveFPRegsMode save_fp, |
| 295 | RememberedSetAction remembered_set_action, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 296 | SmiCheck smi_check, |
| 297 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 298 | // First, check if a write barrier is even needed. The tests below |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 299 | // catch stores of Smis. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 300 | Label done; |
| 301 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 302 | // Skip barrier if writing a smi. |
| 303 | if (smi_check == INLINE_SMI_CHECK) { |
| 304 | JumpIfSmi(value, &done); |
| 305 | } |
| 306 | |
| 307 | // Although the object register is tagged, the offset is relative to the start |
| 308 | // of the object, so so offset must be a multiple of kPointerSize. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 309 | DCHECK(IsAligned(offset, kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 310 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 311 | leap(dst, FieldOperand(object, offset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 312 | if (emit_debug_code()) { |
| 313 | Label ok; |
| 314 | testb(dst, Immediate((1 << kPointerSizeLog2) - 1)); |
| 315 | j(zero, &ok, Label::kNear); |
| 316 | int3(); |
| 317 | bind(&ok); |
| 318 | } |
| 319 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 320 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 321 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 322 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 323 | bind(&done); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 324 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 325 | // Clobber clobbered input registers when running with the debug-code flag |
| 326 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 327 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 328 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
| 329 | Move(dst, kZapValue, Assembler::RelocInfoNone()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 330 | } |
| 331 | } |
| 332 | |
| 333 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 334 | void MacroAssembler::RecordWriteArray( |
| 335 | Register object, |
| 336 | Register value, |
| 337 | Register index, |
| 338 | SaveFPRegsMode save_fp, |
| 339 | RememberedSetAction remembered_set_action, |
| 340 | SmiCheck smi_check, |
| 341 | PointersToHereCheck pointers_to_here_check_for_value) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 342 | // First, check if a write barrier is even needed. The tests below |
| 343 | // catch stores of Smis. |
| 344 | Label done; |
| 345 | |
| 346 | // Skip barrier if writing a smi. |
| 347 | if (smi_check == INLINE_SMI_CHECK) { |
| 348 | JumpIfSmi(value, &done); |
| 349 | } |
| 350 | |
| 351 | // Array access: calculate the destination address. Index is not a smi. |
| 352 | Register dst = index; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 353 | leap(dst, Operand(object, index, times_pointer_size, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 354 | FixedArray::kHeaderSize - kHeapObjectTag)); |
| 355 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 356 | RecordWrite(object, dst, value, save_fp, remembered_set_action, |
| 357 | OMIT_SMI_CHECK, pointers_to_here_check_for_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 358 | |
| 359 | bind(&done); |
| 360 | |
| 361 | // Clobber clobbered input registers when running with the debug-code flag |
| 362 | // turned on to provoke errors. |
| 363 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 364 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
| 365 | Move(index, kZapValue, Assembler::RelocInfoNone()); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 366 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 370 | void MacroAssembler::RecordWriteForMap(Register object, |
| 371 | Register map, |
| 372 | Register dst, |
| 373 | SaveFPRegsMode fp_mode) { |
| 374 | DCHECK(!object.is(kScratchRegister)); |
| 375 | DCHECK(!object.is(map)); |
| 376 | DCHECK(!object.is(dst)); |
| 377 | DCHECK(!map.is(dst)); |
| 378 | AssertNotSmi(object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 379 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 380 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 381 | Label ok; |
| 382 | if (map.is(kScratchRegister)) pushq(map); |
| 383 | CompareMap(map, isolate()->factory()->meta_map()); |
| 384 | if (map.is(kScratchRegister)) popq(map); |
| 385 | j(equal, &ok, Label::kNear); |
| 386 | int3(); |
| 387 | bind(&ok); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 388 | } |
| 389 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 390 | if (!FLAG_incremental_marking) { |
| 391 | return; |
| 392 | } |
| 393 | |
| 394 | if (emit_debug_code()) { |
| 395 | Label ok; |
| 396 | if (map.is(kScratchRegister)) pushq(map); |
| 397 | cmpp(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 398 | if (map.is(kScratchRegister)) popq(map); |
| 399 | j(equal, &ok, Label::kNear); |
| 400 | int3(); |
| 401 | bind(&ok); |
| 402 | } |
| 403 | |
| 404 | // Compute the address. |
| 405 | leap(dst, FieldOperand(object, HeapObject::kMapOffset)); |
| 406 | |
| 407 | // First, check if a write barrier is even needed. The tests below |
| 408 | // catch stores of smis and stores into the young generation. |
| 409 | Label done; |
| 410 | |
| 411 | // A single check of the map's pages interesting flag suffices, since it is |
| 412 | // only set during incremental collection, and then it's also guaranteed that |
| 413 | // the from object's page's interesting flag is also set. This optimization |
| 414 | // relies on the fact that maps can never be in new space. |
| 415 | CheckPageFlag(map, |
| 416 | map, // Used as scratch. |
| 417 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 418 | zero, |
| 419 | &done, |
| 420 | Label::kNear); |
| 421 | |
| 422 | RecordWriteStub stub(isolate(), object, map, dst, OMIT_REMEMBERED_SET, |
| 423 | fp_mode); |
| 424 | CallStub(&stub); |
| 425 | |
| 426 | bind(&done); |
| 427 | |
| 428 | // Count number of write barriers in generated code. |
| 429 | isolate()->counters()->write_barriers_static()->Increment(); |
| 430 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 431 | |
| 432 | // Clobber clobbered registers when running with the debug-code flag |
| 433 | // turned on to provoke errors. |
| 434 | if (emit_debug_code()) { |
| 435 | Move(dst, kZapValue, Assembler::RelocInfoNone()); |
| 436 | Move(map, kZapValue, Assembler::RelocInfoNone()); |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | |
| 441 | void MacroAssembler::RecordWrite( |
| 442 | Register object, |
| 443 | Register address, |
| 444 | Register value, |
| 445 | SaveFPRegsMode fp_mode, |
| 446 | RememberedSetAction remembered_set_action, |
| 447 | SmiCheck smi_check, |
| 448 | PointersToHereCheck pointers_to_here_check_for_value) { |
| 449 | DCHECK(!object.is(value)); |
| 450 | DCHECK(!object.is(address)); |
| 451 | DCHECK(!value.is(address)); |
| 452 | AssertNotSmi(object); |
| 453 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 454 | if (remembered_set_action == OMIT_REMEMBERED_SET && |
| 455 | !FLAG_incremental_marking) { |
| 456 | return; |
| 457 | } |
| 458 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 459 | if (emit_debug_code()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 460 | Label ok; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 461 | cmpp(value, Operand(address, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 462 | j(equal, &ok, Label::kNear); |
| 463 | int3(); |
| 464 | bind(&ok); |
| 465 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 466 | |
| 467 | // First, check if a write barrier is even needed. The tests below |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 468 | // catch stores of smis and stores into the young generation. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 469 | Label done; |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 470 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 471 | if (smi_check == INLINE_SMI_CHECK) { |
| 472 | // Skip barrier if writing a smi. |
| 473 | JumpIfSmi(value, &done); |
| 474 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 475 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 476 | if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) { |
| 477 | CheckPageFlag(value, |
| 478 | value, // Used as scratch. |
| 479 | MemoryChunk::kPointersToHereAreInterestingMask, |
| 480 | zero, |
| 481 | &done, |
| 482 | Label::kNear); |
| 483 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 484 | |
| 485 | CheckPageFlag(object, |
| 486 | value, // Used as scratch. |
| 487 | MemoryChunk::kPointersFromHereAreInterestingMask, |
| 488 | zero, |
| 489 | &done, |
| 490 | Label::kNear); |
| 491 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 492 | RecordWriteStub stub(isolate(), object, value, address, remembered_set_action, |
| 493 | fp_mode); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 494 | CallStub(&stub); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 495 | |
| 496 | bind(&done); |
| 497 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 498 | // Count number of write barriers in generated code. |
| 499 | isolate()->counters()->write_barriers_static()->Increment(); |
| 500 | IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1); |
| 501 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 502 | // Clobber clobbered registers when running with the debug-code flag |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 503 | // turned on to provoke errors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 504 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 505 | Move(address, kZapValue, Assembler::RelocInfoNone()); |
| 506 | Move(value, kZapValue, Assembler::RelocInfoNone()); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 507 | } |
| 508 | } |
| 509 | |
| 510 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 511 | void MacroAssembler::Assert(Condition cc, BailoutReason reason) { |
| 512 | if (emit_debug_code()) Check(cc, reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 513 | } |
| 514 | |
| 515 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 516 | void MacroAssembler::AssertFastElements(Register elements) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 517 | if (emit_debug_code()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 518 | Label ok; |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 519 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 520 | Heap::kFixedArrayMapRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 521 | j(equal, &ok, Label::kNear); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 522 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 523 | Heap::kFixedDoubleArrayMapRootIndex); |
| 524 | j(equal, &ok, Label::kNear); |
| 525 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 526 | Heap::kFixedCOWArrayMapRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 527 | j(equal, &ok, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 528 | Abort(kJSObjectWithFastElementsMapHasSlowElements); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 529 | bind(&ok); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 534 | void MacroAssembler::Check(Condition cc, BailoutReason reason) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 535 | Label L; |
| 536 | j(cc, &L, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 537 | Abort(reason); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 538 | // Control will not return here. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 539 | bind(&L); |
| 540 | } |
| 541 | |
| 542 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 543 | void MacroAssembler::CheckStackAlignment() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 544 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 545 | int frame_alignment_mask = frame_alignment - 1; |
| 546 | if (frame_alignment > kPointerSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 547 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 548 | Label alignment_as_expected; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 549 | testp(rsp, Immediate(frame_alignment_mask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 550 | j(zero, &alignment_as_expected, Label::kNear); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 551 | // Abort if stack is not aligned. |
| 552 | int3(); |
| 553 | bind(&alignment_as_expected); |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 558 | void MacroAssembler::NegativeZeroTest(Register result, |
| 559 | Register op, |
| 560 | Label* then_label) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 561 | Label ok; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 562 | testl(result, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 563 | j(not_zero, &ok, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 564 | testl(op, op); |
| 565 | j(sign, then_label); |
| 566 | bind(&ok); |
| 567 | } |
| 568 | |
| 569 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 570 | void MacroAssembler::Abort(BailoutReason reason) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 571 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 572 | const char* msg = GetBailoutReason(reason); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 573 | if (msg != NULL) { |
| 574 | RecordComment("Abort message: "); |
| 575 | RecordComment(msg); |
| 576 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 577 | |
| 578 | if (FLAG_trap_on_abort) { |
| 579 | int3(); |
| 580 | return; |
| 581 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 582 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 583 | |
| 584 | Move(kScratchRegister, Smi::FromInt(static_cast<int>(reason)), |
| 585 | Assembler::RelocInfoNone()); |
| 586 | Push(kScratchRegister); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 587 | |
| 588 | if (!has_frame_) { |
| 589 | // We don't actually want to generate a pile of code for this, so just |
| 590 | // claim there is a stack frame, without generating one. |
| 591 | FrameScope scope(this, StackFrame::NONE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 592 | CallRuntime(Runtime::kAbort, 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 593 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 594 | CallRuntime(Runtime::kAbort, 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 595 | } |
| 596 | // Control will not return here. |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 597 | int3(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 601 | void MacroAssembler::CallStub(CodeStub* stub, TypeFeedbackId ast_id) { |
| 602 | DCHECK(AllowThisStubCall(stub)); // Calls are not allowed in some stubs |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 603 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 604 | } |
| 605 | |
| 606 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 607 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 608 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 609 | } |
| 610 | |
| 611 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 612 | void MacroAssembler::StubReturn(int argc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 613 | DCHECK(argc >= 1 && generating_stub()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 614 | ret((argc - 1) * kPointerSize); |
| 615 | } |
| 616 | |
| 617 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 618 | bool MacroAssembler::AllowThisStubCall(CodeStub* stub) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 619 | return has_frame_ || !stub->SometimesSetsUpAFrame(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 620 | } |
| 621 | |
| 622 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 623 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
| 624 | // The assert checks that the constants for the maximum number of digits |
| 625 | // for an array index cached in the hash field and the number of bits |
| 626 | // reserved for it does not conflict. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 627 | DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) < |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 628 | (1 << String::kArrayIndexValueBits)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 629 | if (!hash.is(index)) { |
| 630 | movl(index, hash); |
| 631 | } |
| 632 | DecodeFieldToSmi<String::ArrayIndexValueBits>(index); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 636 | void MacroAssembler::CallRuntime(const Runtime::Function* f, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 637 | int num_arguments, |
| 638 | SaveFPRegsMode save_doubles) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 639 | // If the expected number of arguments of the runtime function is |
| 640 | // constant, we check that the actual number of arguments match the |
| 641 | // expectation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 642 | CHECK(f->nargs < 0 || f->nargs == num_arguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 643 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 644 | // TODO(1236192): Most runtime routines don't need the number of |
| 645 | // arguments passed in because it is constant. At some point we |
| 646 | // should remove this need and make the runtime routine entry code |
| 647 | // smarter. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 648 | Set(rax, num_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 649 | LoadAddress(rbx, ExternalReference(f, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 650 | CEntryStub ces(isolate(), f->result_size, save_doubles); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 651 | CallStub(&ces); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 655 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
| 656 | int num_arguments) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 657 | Set(rax, num_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 658 | LoadAddress(rbx, ext); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 659 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 660 | CEntryStub stub(isolate(), 1); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 661 | CallStub(&stub); |
| 662 | } |
| 663 | |
| 664 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 665 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 666 | // ----------- S t a t e ------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 667 | // -- rsp[0] : return address |
| 668 | // -- rsp[8] : argument num_arguments - 1 |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 669 | // ... |
| 670 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 671 | // |
| 672 | // For runtime functions with variable arguments: |
| 673 | // -- rax : number of arguments |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 674 | // ----------------------------------- |
| 675 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 676 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 677 | DCHECK_EQ(1, function->result_size); |
| 678 | if (function->nargs >= 0) { |
| 679 | Set(rax, function->nargs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 680 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 681 | JumpToExternalReference(ExternalReference(fid, isolate())); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 685 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 686 | // Set the entry point and jump to the C entry runtime stub. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 687 | LoadAddress(rbx, ext); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 688 | CEntryStub ces(isolate(), 1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 689 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 693 | void MacroAssembler::InvokeBuiltin(int native_context_index, InvokeFlag flag, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 694 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 695 | // You can't call a builtin without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 696 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 697 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 698 | // Fake a parameter count to avoid emitting code to do the check. |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 699 | ParameterCount expected(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 700 | LoadNativeContextSlot(native_context_index, rdi); |
| 701 | InvokeFunctionCode(rdi, no_reg, expected, expected, flag, call_wrapper); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 702 | } |
| 703 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 704 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 705 | #define REG(Name) \ |
| 706 | { Register::kCode_##Name } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 707 | |
| 708 | static const Register saved_regs[] = { |
| 709 | REG(rax), REG(rcx), REG(rdx), REG(rbx), REG(rbp), REG(rsi), REG(rdi), REG(r8), |
| 710 | REG(r9), REG(r10), REG(r11) |
| 711 | }; |
| 712 | |
| 713 | #undef REG |
| 714 | |
| 715 | static const int kNumberOfSavedRegs = sizeof(saved_regs) / sizeof(Register); |
| 716 | |
| 717 | |
| 718 | void MacroAssembler::PushCallerSaved(SaveFPRegsMode fp_mode, |
| 719 | Register exclusion1, |
| 720 | Register exclusion2, |
| 721 | Register exclusion3) { |
| 722 | // We don't allow a GC during a store buffer overflow so there is no need to |
| 723 | // store the registers in any particular way, but we do have to store and |
| 724 | // restore them. |
| 725 | for (int i = 0; i < kNumberOfSavedRegs; i++) { |
| 726 | Register reg = saved_regs[i]; |
| 727 | if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 728 | pushq(reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 729 | } |
| 730 | } |
| 731 | // R12 to r15 are callee save on all platforms. |
| 732 | if (fp_mode == kSaveFPRegs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 733 | subp(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters)); |
| 734 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 735 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 736 | Movsd(Operand(rsp, i * kDoubleSize), reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 737 | } |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | |
| 742 | void MacroAssembler::PopCallerSaved(SaveFPRegsMode fp_mode, |
| 743 | Register exclusion1, |
| 744 | Register exclusion2, |
| 745 | Register exclusion3) { |
| 746 | if (fp_mode == kSaveFPRegs) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 747 | for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 748 | XMMRegister reg = XMMRegister::from_code(i); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 749 | Movsd(reg, Operand(rsp, i * kDoubleSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 750 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 751 | addp(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 752 | } |
| 753 | for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) { |
| 754 | Register reg = saved_regs[i]; |
| 755 | if (!reg.is(exclusion1) && !reg.is(exclusion2) && !reg.is(exclusion3)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 756 | popq(reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 757 | } |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 762 | void MacroAssembler::Cvtss2sd(XMMRegister dst, XMMRegister src) { |
| 763 | if (CpuFeatures::IsSupported(AVX)) { |
| 764 | CpuFeatureScope scope(this, AVX); |
| 765 | vcvtss2sd(dst, src, src); |
| 766 | } else { |
| 767 | cvtss2sd(dst, src); |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | |
| 772 | void MacroAssembler::Cvtss2sd(XMMRegister dst, const Operand& src) { |
| 773 | if (CpuFeatures::IsSupported(AVX)) { |
| 774 | CpuFeatureScope scope(this, AVX); |
| 775 | vcvtss2sd(dst, dst, src); |
| 776 | } else { |
| 777 | cvtss2sd(dst, src); |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | |
| 782 | void MacroAssembler::Cvtsd2ss(XMMRegister dst, XMMRegister src) { |
| 783 | if (CpuFeatures::IsSupported(AVX)) { |
| 784 | CpuFeatureScope scope(this, AVX); |
| 785 | vcvtsd2ss(dst, src, src); |
| 786 | } else { |
| 787 | cvtsd2ss(dst, src); |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | |
| 792 | void MacroAssembler::Cvtsd2ss(XMMRegister dst, const Operand& src) { |
| 793 | if (CpuFeatures::IsSupported(AVX)) { |
| 794 | CpuFeatureScope scope(this, AVX); |
| 795 | vcvtsd2ss(dst, dst, src); |
| 796 | } else { |
| 797 | cvtsd2ss(dst, src); |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 802 | void MacroAssembler::Cvtlsi2sd(XMMRegister dst, Register src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 803 | if (CpuFeatures::IsSupported(AVX)) { |
| 804 | CpuFeatureScope scope(this, AVX); |
| 805 | vxorpd(dst, dst, dst); |
| 806 | vcvtlsi2sd(dst, dst, src); |
| 807 | } else { |
| 808 | xorpd(dst, dst); |
| 809 | cvtlsi2sd(dst, src); |
| 810 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 811 | } |
| 812 | |
| 813 | |
| 814 | void MacroAssembler::Cvtlsi2sd(XMMRegister dst, const Operand& src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 815 | if (CpuFeatures::IsSupported(AVX)) { |
| 816 | CpuFeatureScope scope(this, AVX); |
| 817 | vxorpd(dst, dst, dst); |
| 818 | vcvtlsi2sd(dst, dst, src); |
| 819 | } else { |
| 820 | xorpd(dst, dst); |
| 821 | cvtlsi2sd(dst, src); |
| 822 | } |
| 823 | } |
| 824 | |
| 825 | |
| 826 | void MacroAssembler::Cvtqsi2ss(XMMRegister dst, Register src) { |
| 827 | if (CpuFeatures::IsSupported(AVX)) { |
| 828 | CpuFeatureScope scope(this, AVX); |
| 829 | vxorps(dst, dst, dst); |
| 830 | vcvtqsi2ss(dst, dst, src); |
| 831 | } else { |
| 832 | xorps(dst, dst); |
| 833 | cvtqsi2ss(dst, src); |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | |
| 838 | void MacroAssembler::Cvtqsi2ss(XMMRegister dst, const Operand& src) { |
| 839 | if (CpuFeatures::IsSupported(AVX)) { |
| 840 | CpuFeatureScope scope(this, AVX); |
| 841 | vxorps(dst, dst, dst); |
| 842 | vcvtqsi2ss(dst, dst, src); |
| 843 | } else { |
| 844 | xorps(dst, dst); |
| 845 | cvtqsi2ss(dst, src); |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | |
| 850 | void MacroAssembler::Cvtqsi2sd(XMMRegister dst, Register src) { |
| 851 | if (CpuFeatures::IsSupported(AVX)) { |
| 852 | CpuFeatureScope scope(this, AVX); |
| 853 | vxorpd(dst, dst, dst); |
| 854 | vcvtqsi2sd(dst, dst, src); |
| 855 | } else { |
| 856 | xorpd(dst, dst); |
| 857 | cvtqsi2sd(dst, src); |
| 858 | } |
| 859 | } |
| 860 | |
| 861 | |
| 862 | void MacroAssembler::Cvtqsi2sd(XMMRegister dst, const Operand& src) { |
| 863 | if (CpuFeatures::IsSupported(AVX)) { |
| 864 | CpuFeatureScope scope(this, AVX); |
| 865 | vxorpd(dst, dst, dst); |
| 866 | vcvtqsi2sd(dst, dst, src); |
| 867 | } else { |
| 868 | xorpd(dst, dst); |
| 869 | cvtqsi2sd(dst, src); |
| 870 | } |
| 871 | } |
| 872 | |
| 873 | |
| 874 | void MacroAssembler::Cvtqui2ss(XMMRegister dst, Register src, Register tmp) { |
| 875 | Label msb_set_src; |
| 876 | Label jmp_return; |
| 877 | testq(src, src); |
| 878 | j(sign, &msb_set_src, Label::kNear); |
| 879 | Cvtqsi2ss(dst, src); |
| 880 | jmp(&jmp_return, Label::kNear); |
| 881 | bind(&msb_set_src); |
| 882 | movq(tmp, src); |
| 883 | shrq(src, Immediate(1)); |
| 884 | // Recover the least significant bit to avoid rounding errors. |
| 885 | andq(tmp, Immediate(1)); |
| 886 | orq(src, tmp); |
| 887 | Cvtqsi2ss(dst, src); |
| 888 | addss(dst, dst); |
| 889 | bind(&jmp_return); |
| 890 | } |
| 891 | |
| 892 | |
| 893 | void MacroAssembler::Cvtqui2sd(XMMRegister dst, Register src, Register tmp) { |
| 894 | Label msb_set_src; |
| 895 | Label jmp_return; |
| 896 | testq(src, src); |
| 897 | j(sign, &msb_set_src, Label::kNear); |
| 898 | Cvtqsi2sd(dst, src); |
| 899 | jmp(&jmp_return, Label::kNear); |
| 900 | bind(&msb_set_src); |
| 901 | movq(tmp, src); |
| 902 | shrq(src, Immediate(1)); |
| 903 | andq(tmp, Immediate(1)); |
| 904 | orq(src, tmp); |
| 905 | Cvtqsi2sd(dst, src); |
| 906 | addsd(dst, dst); |
| 907 | bind(&jmp_return); |
| 908 | } |
| 909 | |
| 910 | |
| 911 | void MacroAssembler::Cvtsd2si(Register dst, XMMRegister src) { |
| 912 | if (CpuFeatures::IsSupported(AVX)) { |
| 913 | CpuFeatureScope scope(this, AVX); |
| 914 | vcvtsd2si(dst, src); |
| 915 | } else { |
| 916 | cvtsd2si(dst, src); |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | |
| 921 | void MacroAssembler::Cvttsd2si(Register dst, XMMRegister src) { |
| 922 | if (CpuFeatures::IsSupported(AVX)) { |
| 923 | CpuFeatureScope scope(this, AVX); |
| 924 | vcvttsd2si(dst, src); |
| 925 | } else { |
| 926 | cvttsd2si(dst, src); |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | |
| 931 | void MacroAssembler::Cvttsd2si(Register dst, const Operand& src) { |
| 932 | if (CpuFeatures::IsSupported(AVX)) { |
| 933 | CpuFeatureScope scope(this, AVX); |
| 934 | vcvttsd2si(dst, src); |
| 935 | } else { |
| 936 | cvttsd2si(dst, src); |
| 937 | } |
| 938 | } |
| 939 | |
| 940 | |
| 941 | void MacroAssembler::Cvttss2siq(Register dst, XMMRegister src) { |
| 942 | if (CpuFeatures::IsSupported(AVX)) { |
| 943 | CpuFeatureScope scope(this, AVX); |
| 944 | vcvttss2siq(dst, src); |
| 945 | } else { |
| 946 | cvttss2siq(dst, src); |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | |
| 951 | void MacroAssembler::Cvttss2siq(Register dst, const Operand& src) { |
| 952 | if (CpuFeatures::IsSupported(AVX)) { |
| 953 | CpuFeatureScope scope(this, AVX); |
| 954 | vcvttss2siq(dst, src); |
| 955 | } else { |
| 956 | cvttss2siq(dst, src); |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | |
| 961 | void MacroAssembler::Cvttsd2siq(Register dst, XMMRegister src) { |
| 962 | if (CpuFeatures::IsSupported(AVX)) { |
| 963 | CpuFeatureScope scope(this, AVX); |
| 964 | vcvttsd2siq(dst, src); |
| 965 | } else { |
| 966 | cvttsd2siq(dst, src); |
| 967 | } |
| 968 | } |
| 969 | |
| 970 | |
| 971 | void MacroAssembler::Cvttsd2siq(Register dst, const Operand& src) { |
| 972 | if (CpuFeatures::IsSupported(AVX)) { |
| 973 | CpuFeatureScope scope(this, AVX); |
| 974 | vcvttsd2siq(dst, src); |
| 975 | } else { |
| 976 | cvttsd2siq(dst, src); |
| 977 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 978 | } |
| 979 | |
| 980 | |
| 981 | void MacroAssembler::Load(Register dst, const Operand& src, Representation r) { |
| 982 | DCHECK(!r.IsDouble()); |
| 983 | if (r.IsInteger8()) { |
| 984 | movsxbq(dst, src); |
| 985 | } else if (r.IsUInteger8()) { |
| 986 | movzxbl(dst, src); |
| 987 | } else if (r.IsInteger16()) { |
| 988 | movsxwq(dst, src); |
| 989 | } else if (r.IsUInteger16()) { |
| 990 | movzxwl(dst, src); |
| 991 | } else if (r.IsInteger32()) { |
| 992 | movl(dst, src); |
| 993 | } else { |
| 994 | movp(dst, src); |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | |
| 999 | void MacroAssembler::Store(const Operand& dst, Register src, Representation r) { |
| 1000 | DCHECK(!r.IsDouble()); |
| 1001 | if (r.IsInteger8() || r.IsUInteger8()) { |
| 1002 | movb(dst, src); |
| 1003 | } else if (r.IsInteger16() || r.IsUInteger16()) { |
| 1004 | movw(dst, src); |
| 1005 | } else if (r.IsInteger32()) { |
| 1006 | movl(dst, src); |
| 1007 | } else { |
| 1008 | if (r.IsHeapObject()) { |
| 1009 | AssertNotSmi(src); |
| 1010 | } else if (r.IsSmi()) { |
| 1011 | AssertSmi(src); |
| 1012 | } |
| 1013 | movp(dst, src); |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1018 | void MacroAssembler::Set(Register dst, int64_t x) { |
| 1019 | if (x == 0) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1020 | xorl(dst, dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1021 | } else if (is_uint32(x)) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1022 | movl(dst, Immediate(static_cast<uint32_t>(x))); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1023 | } else if (is_int32(x)) { |
| 1024 | movq(dst, Immediate(static_cast<int32_t>(x))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1025 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1026 | movq(dst, x); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1027 | } |
| 1028 | } |
| 1029 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1030 | |
| 1031 | void MacroAssembler::Set(const Operand& dst, intptr_t x) { |
| 1032 | if (kPointerSize == kInt64Size) { |
| 1033 | if (is_int32(x)) { |
| 1034 | movp(dst, Immediate(static_cast<int32_t>(x))); |
| 1035 | } else { |
| 1036 | Set(kScratchRegister, x); |
| 1037 | movp(dst, kScratchRegister); |
| 1038 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1039 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1040 | movp(dst, Immediate(static_cast<int32_t>(x))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1041 | } |
| 1042 | } |
| 1043 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1044 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1045 | // ---------------------------------------------------------------------------- |
| 1046 | // Smi tagging, untagging and tag detection. |
| 1047 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1048 | bool MacroAssembler::IsUnsafeInt(const int32_t x) { |
| 1049 | static const int kMaxBits = 17; |
| 1050 | return !is_intn(x, kMaxBits); |
| 1051 | } |
| 1052 | |
| 1053 | |
| 1054 | void MacroAssembler::SafeMove(Register dst, Smi* src) { |
| 1055 | DCHECK(!dst.is(kScratchRegister)); |
| 1056 | if (IsUnsafeInt(src->value()) && jit_cookie() != 0) { |
| 1057 | if (SmiValuesAre32Bits()) { |
| 1058 | // JIT cookie can be converted to Smi. |
| 1059 | Move(dst, Smi::FromInt(src->value() ^ jit_cookie())); |
| 1060 | Move(kScratchRegister, Smi::FromInt(jit_cookie())); |
| 1061 | xorp(dst, kScratchRegister); |
| 1062 | } else { |
| 1063 | DCHECK(SmiValuesAre31Bits()); |
| 1064 | int32_t value = static_cast<int32_t>(reinterpret_cast<intptr_t>(src)); |
| 1065 | movp(dst, Immediate(value ^ jit_cookie())); |
| 1066 | xorp(dst, Immediate(jit_cookie())); |
| 1067 | } |
| 1068 | } else { |
| 1069 | Move(dst, src); |
| 1070 | } |
| 1071 | } |
| 1072 | |
| 1073 | |
| 1074 | void MacroAssembler::SafePush(Smi* src) { |
| 1075 | if (IsUnsafeInt(src->value()) && jit_cookie() != 0) { |
| 1076 | if (SmiValuesAre32Bits()) { |
| 1077 | // JIT cookie can be converted to Smi. |
| 1078 | Push(Smi::FromInt(src->value() ^ jit_cookie())); |
| 1079 | Move(kScratchRegister, Smi::FromInt(jit_cookie())); |
| 1080 | xorp(Operand(rsp, 0), kScratchRegister); |
| 1081 | } else { |
| 1082 | DCHECK(SmiValuesAre31Bits()); |
| 1083 | int32_t value = static_cast<int32_t>(reinterpret_cast<intptr_t>(src)); |
| 1084 | Push(Immediate(value ^ jit_cookie())); |
| 1085 | xorp(Operand(rsp, 0), Immediate(jit_cookie())); |
| 1086 | } |
| 1087 | } else { |
| 1088 | Push(src); |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1093 | Register MacroAssembler::GetSmiConstant(Smi* source) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1094 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1095 | int value = source->value(); |
| 1096 | if (value == 0) { |
| 1097 | xorl(kScratchRegister, kScratchRegister); |
| 1098 | return kScratchRegister; |
| 1099 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1100 | LoadSmiConstant(kScratchRegister, source); |
| 1101 | return kScratchRegister; |
| 1102 | } |
| 1103 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1104 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1105 | void MacroAssembler::LoadSmiConstant(Register dst, Smi* source) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1106 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1107 | int value = source->value(); |
| 1108 | if (value == 0) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1109 | xorl(dst, dst); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1110 | } else { |
| 1111 | Move(dst, source, Assembler::RelocInfoNone()); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1112 | } |
| 1113 | } |
| 1114 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1115 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1116 | void MacroAssembler::Integer32ToSmi(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1117 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1118 | if (!dst.is(src)) { |
| 1119 | movl(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1120 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1121 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1125 | void MacroAssembler::Integer32ToSmiField(const Operand& dst, Register src) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1126 | if (emit_debug_code()) { |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1127 | testb(dst, Immediate(0x01)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1128 | Label ok; |
| 1129 | j(zero, &ok, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1130 | Abort(kInteger32ToSmiFieldWritingToNonSmiLocation); |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1131 | bind(&ok); |
| 1132 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1133 | |
| 1134 | if (SmiValuesAre32Bits()) { |
| 1135 | DCHECK(kSmiShift % kBitsPerByte == 0); |
| 1136 | movl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1137 | } else { |
| 1138 | DCHECK(SmiValuesAre31Bits()); |
| 1139 | Integer32ToSmi(kScratchRegister, src); |
| 1140 | movp(dst, kScratchRegister); |
| 1141 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1142 | } |
| 1143 | |
| 1144 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1145 | void MacroAssembler::Integer64PlusConstantToSmi(Register dst, |
| 1146 | Register src, |
| 1147 | int constant) { |
| 1148 | if (dst.is(src)) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1149 | addl(dst, Immediate(constant)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1150 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1151 | leal(dst, Operand(src, constant)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1152 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1153 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | |
| 1157 | void MacroAssembler::SmiToInteger32(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1158 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1159 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1160 | movp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1161 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1162 | |
| 1163 | if (SmiValuesAre32Bits()) { |
| 1164 | shrp(dst, Immediate(kSmiShift)); |
| 1165 | } else { |
| 1166 | DCHECK(SmiValuesAre31Bits()); |
| 1167 | sarl(dst, Immediate(kSmiShift)); |
| 1168 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1169 | } |
| 1170 | |
| 1171 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1172 | void MacroAssembler::SmiToInteger32(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1173 | if (SmiValuesAre32Bits()) { |
| 1174 | movl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 1175 | } else { |
| 1176 | DCHECK(SmiValuesAre31Bits()); |
| 1177 | movl(dst, src); |
| 1178 | sarl(dst, Immediate(kSmiShift)); |
| 1179 | } |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1180 | } |
| 1181 | |
| 1182 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1183 | void MacroAssembler::SmiToInteger64(Register dst, Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1184 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1185 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1186 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1187 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1188 | sarp(dst, Immediate(kSmiShift)); |
| 1189 | if (kPointerSize == kInt32Size) { |
| 1190 | // Sign extend to 64-bit. |
| 1191 | movsxlq(dst, dst); |
| 1192 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1193 | } |
| 1194 | |
| 1195 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1196 | void MacroAssembler::SmiToInteger64(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1197 | if (SmiValuesAre32Bits()) { |
| 1198 | movsxlq(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 1199 | } else { |
| 1200 | DCHECK(SmiValuesAre31Bits()); |
| 1201 | movp(dst, src); |
| 1202 | SmiToInteger64(dst, dst); |
| 1203 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1204 | } |
| 1205 | |
| 1206 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1207 | void MacroAssembler::SmiTest(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1208 | AssertSmi(src); |
| 1209 | testp(src, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1213 | void MacroAssembler::SmiCompare(Register smi1, Register smi2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1214 | AssertSmi(smi1); |
| 1215 | AssertSmi(smi2); |
| 1216 | cmpp(smi1, smi2); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | |
| 1220 | void MacroAssembler::SmiCompare(Register dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1221 | AssertSmi(dst); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1222 | Cmp(dst, src); |
| 1223 | } |
| 1224 | |
| 1225 | |
| 1226 | void MacroAssembler::Cmp(Register dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1227 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1228 | if (src->value() == 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1229 | testp(dst, dst); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1230 | } else { |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 1231 | Register constant_reg = GetSmiConstant(src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1232 | cmpp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1233 | } |
| 1234 | } |
| 1235 | |
| 1236 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1237 | void MacroAssembler::SmiCompare(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1238 | AssertSmi(dst); |
| 1239 | AssertSmi(src); |
| 1240 | cmpp(dst, src); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1241 | } |
| 1242 | |
| 1243 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1244 | void MacroAssembler::SmiCompare(const Operand& dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1245 | AssertSmi(dst); |
| 1246 | AssertSmi(src); |
| 1247 | cmpp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | |
| 1251 | void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1252 | AssertSmi(dst); |
| 1253 | if (SmiValuesAre32Bits()) { |
| 1254 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value())); |
| 1255 | } else { |
| 1256 | DCHECK(SmiValuesAre31Bits()); |
| 1257 | cmpl(dst, Immediate(src)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1258 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1259 | } |
| 1260 | |
| 1261 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1262 | void MacroAssembler::Cmp(const Operand& dst, Smi* src) { |
| 1263 | // The Operand cannot use the smi register. |
| 1264 | Register smi_reg = GetSmiConstant(src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1265 | DCHECK(!dst.AddressUsesRegister(smi_reg)); |
| 1266 | cmpp(dst, smi_reg); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1270 | void MacroAssembler::SmiCompareInteger32(const Operand& dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1271 | if (SmiValuesAre32Bits()) { |
| 1272 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1273 | } else { |
| 1274 | DCHECK(SmiValuesAre31Bits()); |
| 1275 | SmiToInteger32(kScratchRegister, dst); |
| 1276 | cmpl(kScratchRegister, src); |
| 1277 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1278 | } |
| 1279 | |
| 1280 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1281 | void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst, |
| 1282 | Register src, |
| 1283 | int power) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1284 | DCHECK(power >= 0); |
| 1285 | DCHECK(power < 64); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1286 | if (power == 0) { |
| 1287 | SmiToInteger64(dst, src); |
| 1288 | return; |
| 1289 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1290 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1291 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1292 | } |
| 1293 | if (power < kSmiShift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1294 | sarp(dst, Immediate(kSmiShift - power)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1295 | } else if (power > kSmiShift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1296 | shlp(dst, Immediate(power - kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1301 | void MacroAssembler::PositiveSmiDivPowerOfTwoToInteger32(Register dst, |
| 1302 | Register src, |
| 1303 | int power) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1304 | DCHECK((0 <= power) && (power < 32)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1305 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1306 | shrp(dst, Immediate(power + kSmiShift)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1307 | } else { |
| 1308 | UNIMPLEMENTED(); // Not used. |
| 1309 | } |
| 1310 | } |
| 1311 | |
| 1312 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1313 | void MacroAssembler::SmiOrIfSmis(Register dst, Register src1, Register src2, |
| 1314 | Label* on_not_smis, |
| 1315 | Label::Distance near_jump) { |
| 1316 | if (dst.is(src1) || dst.is(src2)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1317 | DCHECK(!src1.is(kScratchRegister)); |
| 1318 | DCHECK(!src2.is(kScratchRegister)); |
| 1319 | movp(kScratchRegister, src1); |
| 1320 | orp(kScratchRegister, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1321 | JumpIfNotSmi(kScratchRegister, on_not_smis, near_jump); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1322 | movp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1323 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1324 | movp(dst, src1); |
| 1325 | orp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1326 | JumpIfNotSmi(dst, on_not_smis, near_jump); |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1331 | Condition MacroAssembler::CheckSmi(Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1332 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1333 | testb(src, Immediate(kSmiTagMask)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1334 | return zero; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1335 | } |
| 1336 | |
| 1337 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1338 | Condition MacroAssembler::CheckSmi(const Operand& src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1339 | STATIC_ASSERT(kSmiTag == 0); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1340 | testb(src, Immediate(kSmiTagMask)); |
| 1341 | return zero; |
| 1342 | } |
| 1343 | |
| 1344 | |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1345 | Condition MacroAssembler::CheckNonNegativeSmi(Register src) { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1346 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1347 | // Test that both bits of the mask 0x8000000000000001 are zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1348 | movp(kScratchRegister, src); |
| 1349 | rolp(kScratchRegister, Immediate(1)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1350 | testb(kScratchRegister, Immediate(3)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1351 | return zero; |
| 1352 | } |
| 1353 | |
| 1354 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1355 | Condition MacroAssembler::CheckBothSmi(Register first, Register second) { |
| 1356 | if (first.is(second)) { |
| 1357 | return CheckSmi(first); |
| 1358 | } |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1359 | STATIC_ASSERT(kSmiTag == 0 && kHeapObjectTag == 1 && kHeapObjectTagMask == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1360 | if (SmiValuesAre32Bits()) { |
| 1361 | leal(kScratchRegister, Operand(first, second, times_1, 0)); |
| 1362 | testb(kScratchRegister, Immediate(0x03)); |
| 1363 | } else { |
| 1364 | DCHECK(SmiValuesAre31Bits()); |
| 1365 | movl(kScratchRegister, first); |
| 1366 | orl(kScratchRegister, second); |
| 1367 | testb(kScratchRegister, Immediate(kSmiTagMask)); |
| 1368 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1369 | return zero; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1370 | } |
| 1371 | |
| 1372 | |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1373 | Condition MacroAssembler::CheckBothNonNegativeSmi(Register first, |
| 1374 | Register second) { |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1375 | if (first.is(second)) { |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1376 | return CheckNonNegativeSmi(first); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1377 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1378 | movp(kScratchRegister, first); |
| 1379 | orp(kScratchRegister, second); |
| 1380 | rolp(kScratchRegister, Immediate(1)); |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 1381 | testl(kScratchRegister, Immediate(3)); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 1382 | return zero; |
| 1383 | } |
| 1384 | |
| 1385 | |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1386 | Condition MacroAssembler::CheckEitherSmi(Register first, |
| 1387 | Register second, |
| 1388 | Register scratch) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1389 | if (first.is(second)) { |
| 1390 | return CheckSmi(first); |
| 1391 | } |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 1392 | if (scratch.is(second)) { |
| 1393 | andl(scratch, first); |
| 1394 | } else { |
| 1395 | if (!scratch.is(first)) { |
| 1396 | movl(scratch, first); |
| 1397 | } |
| 1398 | andl(scratch, second); |
| 1399 | } |
| 1400 | testb(scratch, Immediate(kSmiTagMask)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1401 | return zero; |
| 1402 | } |
| 1403 | |
| 1404 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1405 | Condition MacroAssembler::CheckInteger32ValidSmiValue(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1406 | if (SmiValuesAre32Bits()) { |
| 1407 | // A 32-bit integer value can always be converted to a smi. |
| 1408 | return always; |
| 1409 | } else { |
| 1410 | DCHECK(SmiValuesAre31Bits()); |
| 1411 | cmpl(src, Immediate(0xc0000000)); |
| 1412 | return positive; |
| 1413 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1414 | } |
| 1415 | |
| 1416 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1417 | Condition MacroAssembler::CheckUInteger32ValidSmiValue(Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1418 | if (SmiValuesAre32Bits()) { |
| 1419 | // An unsigned 32-bit integer value is valid as long as the high bit |
| 1420 | // is not set. |
| 1421 | testl(src, src); |
| 1422 | return positive; |
| 1423 | } else { |
| 1424 | DCHECK(SmiValuesAre31Bits()); |
| 1425 | testl(src, Immediate(0xc0000000)); |
| 1426 | return zero; |
| 1427 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1428 | } |
| 1429 | |
| 1430 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1431 | void MacroAssembler::CheckSmiToIndicator(Register dst, Register src) { |
| 1432 | if (dst.is(src)) { |
| 1433 | andl(dst, Immediate(kSmiTagMask)); |
| 1434 | } else { |
| 1435 | movl(dst, Immediate(kSmiTagMask)); |
| 1436 | andl(dst, src); |
| 1437 | } |
| 1438 | } |
| 1439 | |
| 1440 | |
| 1441 | void MacroAssembler::CheckSmiToIndicator(Register dst, const Operand& src) { |
| 1442 | if (!(src.AddressUsesRegister(dst))) { |
| 1443 | movl(dst, Immediate(kSmiTagMask)); |
| 1444 | andl(dst, src); |
| 1445 | } else { |
| 1446 | movl(dst, src); |
| 1447 | andl(dst, Immediate(kSmiTagMask)); |
| 1448 | } |
| 1449 | } |
| 1450 | |
| 1451 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1452 | void MacroAssembler::JumpIfValidSmiValue(Register src, |
| 1453 | Label* on_valid, |
| 1454 | Label::Distance near_jump) { |
| 1455 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1456 | j(is_valid, on_valid, near_jump); |
| 1457 | } |
| 1458 | |
| 1459 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1460 | void MacroAssembler::JumpIfNotValidSmiValue(Register src, |
| 1461 | Label* on_invalid, |
| 1462 | Label::Distance near_jump) { |
| 1463 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1464 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1465 | } |
| 1466 | |
| 1467 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1468 | void MacroAssembler::JumpIfUIntValidSmiValue(Register src, |
| 1469 | Label* on_valid, |
| 1470 | Label::Distance near_jump) { |
| 1471 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1472 | j(is_valid, on_valid, near_jump); |
| 1473 | } |
| 1474 | |
| 1475 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1476 | void MacroAssembler::JumpIfUIntNotValidSmiValue(Register src, |
| 1477 | Label* on_invalid, |
| 1478 | Label::Distance near_jump) { |
| 1479 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1480 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1481 | } |
| 1482 | |
| 1483 | |
| 1484 | void MacroAssembler::JumpIfSmi(Register src, |
| 1485 | Label* on_smi, |
| 1486 | Label::Distance near_jump) { |
| 1487 | Condition smi = CheckSmi(src); |
| 1488 | j(smi, on_smi, near_jump); |
| 1489 | } |
| 1490 | |
| 1491 | |
| 1492 | void MacroAssembler::JumpIfNotSmi(Register src, |
| 1493 | Label* on_not_smi, |
| 1494 | Label::Distance near_jump) { |
| 1495 | Condition smi = CheckSmi(src); |
| 1496 | j(NegateCondition(smi), on_not_smi, near_jump); |
| 1497 | } |
| 1498 | |
| 1499 | |
| 1500 | void MacroAssembler::JumpUnlessNonNegativeSmi( |
| 1501 | Register src, Label* on_not_smi_or_negative, |
| 1502 | Label::Distance near_jump) { |
| 1503 | Condition non_negative_smi = CheckNonNegativeSmi(src); |
| 1504 | j(NegateCondition(non_negative_smi), on_not_smi_or_negative, near_jump); |
| 1505 | } |
| 1506 | |
| 1507 | |
| 1508 | void MacroAssembler::JumpIfSmiEqualsConstant(Register src, |
| 1509 | Smi* constant, |
| 1510 | Label* on_equals, |
| 1511 | Label::Distance near_jump) { |
| 1512 | SmiCompare(src, constant); |
| 1513 | j(equal, on_equals, near_jump); |
| 1514 | } |
| 1515 | |
| 1516 | |
| 1517 | void MacroAssembler::JumpIfNotBothSmi(Register src1, |
| 1518 | Register src2, |
| 1519 | Label* on_not_both_smi, |
| 1520 | Label::Distance near_jump) { |
| 1521 | Condition both_smi = CheckBothSmi(src1, src2); |
| 1522 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1523 | } |
| 1524 | |
| 1525 | |
| 1526 | void MacroAssembler::JumpUnlessBothNonNegativeSmi(Register src1, |
| 1527 | Register src2, |
| 1528 | Label* on_not_both_smi, |
| 1529 | Label::Distance near_jump) { |
| 1530 | Condition both_smi = CheckBothNonNegativeSmi(src1, src2); |
| 1531 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1532 | } |
| 1533 | |
| 1534 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1535 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) { |
| 1536 | if (constant->value() == 0) { |
| 1537 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1538 | movp(dst, src); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1539 | } |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1540 | return; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1541 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1542 | DCHECK(!dst.is(kScratchRegister)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1543 | Register constant_reg = GetSmiConstant(constant); |
| 1544 | addp(dst, constant_reg); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1545 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1546 | LoadSmiConstant(dst, constant); |
| 1547 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1552 | void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) { |
| 1553 | if (constant->value() != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1554 | if (SmiValuesAre32Bits()) { |
| 1555 | addl(Operand(dst, kSmiShift / kBitsPerByte), |
| 1556 | Immediate(constant->value())); |
| 1557 | } else { |
| 1558 | DCHECK(SmiValuesAre31Bits()); |
| 1559 | addp(dst, Immediate(constant)); |
| 1560 | } |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1561 | } |
| 1562 | } |
| 1563 | |
| 1564 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1565 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant, |
| 1566 | SmiOperationConstraints constraints, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1567 | Label* bailout_label, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1568 | Label::Distance near_jump) { |
| 1569 | if (constant->value() == 0) { |
| 1570 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1571 | movp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1572 | } |
| 1573 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1574 | DCHECK(!dst.is(kScratchRegister)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1575 | LoadSmiConstant(kScratchRegister, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1576 | addp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1577 | if (constraints & SmiOperationConstraint::kBailoutOnNoOverflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1578 | j(no_overflow, bailout_label, near_jump); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1579 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1580 | subp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1581 | } else if (constraints & SmiOperationConstraint::kBailoutOnOverflow) { |
| 1582 | if (constraints & SmiOperationConstraint::kPreserveSourceRegister) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1583 | Label done; |
| 1584 | j(no_overflow, &done, Label::kNear); |
| 1585 | subp(dst, kScratchRegister); |
| 1586 | jmp(bailout_label, near_jump); |
| 1587 | bind(&done); |
| 1588 | } else { |
| 1589 | // Bailout if overflow without reserving src. |
| 1590 | j(overflow, bailout_label, near_jump); |
| 1591 | } |
| 1592 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1593 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1594 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1595 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1596 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
| 1597 | DCHECK(constraints & SmiOperationConstraint::kBailoutOnOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1598 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1599 | addp(dst, src); |
| 1600 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1601 | } |
| 1602 | } |
| 1603 | |
| 1604 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1605 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant) { |
| 1606 | if (constant->value() == 0) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1607 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1608 | movp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1609 | } |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1610 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1611 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1612 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1613 | subp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1614 | } else { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 1615 | if (constant->value() == Smi::kMinValue) { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1616 | LoadSmiConstant(dst, constant); |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1617 | // Adding and subtracting the min-value gives the same result, it only |
| 1618 | // differs on the overflow bit, which we don't check here. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1619 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1620 | } else { |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 1621 | // Subtract by adding the negation. |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 1622 | LoadSmiConstant(dst, Smi::FromInt(-constant->value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1623 | addp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1624 | } |
| 1625 | } |
| 1626 | } |
| 1627 | |
| 1628 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1629 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant, |
| 1630 | SmiOperationConstraints constraints, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1631 | Label* bailout_label, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1632 | Label::Distance near_jump) { |
| 1633 | if (constant->value() == 0) { |
| 1634 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1635 | movp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1636 | } |
| 1637 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1638 | DCHECK(!dst.is(kScratchRegister)); |
| 1639 | LoadSmiConstant(kScratchRegister, constant); |
| 1640 | subp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1641 | if (constraints & SmiOperationConstraint::kBailoutOnNoOverflow) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1642 | j(no_overflow, bailout_label, near_jump); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1643 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1644 | addp(dst, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1645 | } else if (constraints & SmiOperationConstraint::kBailoutOnOverflow) { |
| 1646 | if (constraints & SmiOperationConstraint::kPreserveSourceRegister) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1647 | Label done; |
| 1648 | j(no_overflow, &done, Label::kNear); |
| 1649 | addp(dst, kScratchRegister); |
| 1650 | jmp(bailout_label, near_jump); |
| 1651 | bind(&done); |
| 1652 | } else { |
| 1653 | // Bailout if overflow without reserving src. |
| 1654 | j(overflow, bailout_label, near_jump); |
| 1655 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1656 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1657 | UNREACHABLE(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1658 | } |
| 1659 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1660 | DCHECK(constraints & SmiOperationConstraint::kPreserveSourceRegister); |
| 1661 | DCHECK(constraints & SmiOperationConstraint::kBailoutOnOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1662 | if (constant->value() == Smi::kMinValue) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1663 | DCHECK(!dst.is(kScratchRegister)); |
| 1664 | movp(dst, src); |
| 1665 | LoadSmiConstant(kScratchRegister, constant); |
| 1666 | subp(dst, kScratchRegister); |
| 1667 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1668 | } else { |
| 1669 | // Subtract by adding the negation. |
| 1670 | LoadSmiConstant(dst, Smi::FromInt(-(constant->value()))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1671 | addp(dst, src); |
| 1672 | j(overflow, bailout_label, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1673 | } |
| 1674 | } |
| 1675 | } |
| 1676 | |
| 1677 | |
| 1678 | void MacroAssembler::SmiNeg(Register dst, |
| 1679 | Register src, |
| 1680 | Label* on_smi_result, |
| 1681 | Label::Distance near_jump) { |
| 1682 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1683 | DCHECK(!dst.is(kScratchRegister)); |
| 1684 | movp(kScratchRegister, src); |
| 1685 | negp(dst); // Low 32 bits are retained as zero by negation. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1686 | // Test if result is zero or Smi::kMinValue. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1687 | cmpp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1688 | j(not_equal, on_smi_result, near_jump); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1689 | movp(src, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1690 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1691 | movp(dst, src); |
| 1692 | negp(dst); |
| 1693 | cmpp(dst, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1694 | // If the result is zero or Smi::kMinValue, negation failed to create a smi. |
| 1695 | j(not_equal, on_smi_result, near_jump); |
| 1696 | } |
| 1697 | } |
| 1698 | |
| 1699 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1700 | template<class T> |
| 1701 | static void SmiAddHelper(MacroAssembler* masm, |
| 1702 | Register dst, |
| 1703 | Register src1, |
| 1704 | T src2, |
| 1705 | Label* on_not_smi_result, |
| 1706 | Label::Distance near_jump) { |
| 1707 | if (dst.is(src1)) { |
| 1708 | Label done; |
| 1709 | masm->addp(dst, src2); |
| 1710 | masm->j(no_overflow, &done, Label::kNear); |
| 1711 | // Restore src1. |
| 1712 | masm->subp(dst, src2); |
| 1713 | masm->jmp(on_not_smi_result, near_jump); |
| 1714 | masm->bind(&done); |
| 1715 | } else { |
| 1716 | masm->movp(dst, src1); |
| 1717 | masm->addp(dst, src2); |
| 1718 | masm->j(overflow, on_not_smi_result, near_jump); |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1723 | void MacroAssembler::SmiAdd(Register dst, |
| 1724 | Register src1, |
| 1725 | Register src2, |
| 1726 | Label* on_not_smi_result, |
| 1727 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1728 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1729 | DCHECK(!dst.is(src2)); |
| 1730 | SmiAddHelper<Register>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1731 | } |
| 1732 | |
| 1733 | |
| 1734 | void MacroAssembler::SmiAdd(Register dst, |
| 1735 | Register src1, |
| 1736 | const Operand& src2, |
| 1737 | Label* on_not_smi_result, |
| 1738 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1739 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1740 | DCHECK(!src2.AddressUsesRegister(dst)); |
| 1741 | SmiAddHelper<Operand>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1742 | } |
| 1743 | |
| 1744 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1745 | void MacroAssembler::SmiAdd(Register dst, |
| 1746 | Register src1, |
| 1747 | Register src2) { |
| 1748 | // No overflow checking. Use only when it's known that |
| 1749 | // overflowing is impossible. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1750 | if (!dst.is(src1)) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1751 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1752 | movp(kScratchRegister, src1); |
| 1753 | addp(kScratchRegister, src2); |
| 1754 | Check(no_overflow, kSmiAdditionOverflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1755 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1756 | leap(dst, Operand(src1, src2, times_1, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1757 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1758 | addp(dst, src2); |
| 1759 | Assert(no_overflow, kSmiAdditionOverflow); |
| 1760 | } |
| 1761 | } |
| 1762 | |
| 1763 | |
| 1764 | template<class T> |
| 1765 | static void SmiSubHelper(MacroAssembler* masm, |
| 1766 | Register dst, |
| 1767 | Register src1, |
| 1768 | T src2, |
| 1769 | Label* on_not_smi_result, |
| 1770 | Label::Distance near_jump) { |
| 1771 | if (dst.is(src1)) { |
| 1772 | Label done; |
| 1773 | masm->subp(dst, src2); |
| 1774 | masm->j(no_overflow, &done, Label::kNear); |
| 1775 | // Restore src1. |
| 1776 | masm->addp(dst, src2); |
| 1777 | masm->jmp(on_not_smi_result, near_jump); |
| 1778 | masm->bind(&done); |
| 1779 | } else { |
| 1780 | masm->movp(dst, src1); |
| 1781 | masm->subp(dst, src2); |
| 1782 | masm->j(overflow, on_not_smi_result, near_jump); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1783 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1784 | } |
| 1785 | |
| 1786 | |
| 1787 | void MacroAssembler::SmiSub(Register dst, |
| 1788 | Register src1, |
| 1789 | Register src2, |
| 1790 | Label* on_not_smi_result, |
| 1791 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1792 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1793 | DCHECK(!dst.is(src2)); |
| 1794 | SmiSubHelper<Register>(this, dst, src1, src2, on_not_smi_result, near_jump); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1795 | } |
| 1796 | |
| 1797 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1798 | void MacroAssembler::SmiSub(Register dst, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1799 | Register src1, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1800 | const Operand& src2, |
| 1801 | Label* on_not_smi_result, |
| 1802 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1803 | DCHECK_NOT_NULL(on_not_smi_result); |
| 1804 | DCHECK(!src2.AddressUsesRegister(dst)); |
| 1805 | SmiSubHelper<Operand>(this, dst, src1, src2, on_not_smi_result, near_jump); |
| 1806 | } |
| 1807 | |
| 1808 | |
| 1809 | template<class T> |
| 1810 | static void SmiSubNoOverflowHelper(MacroAssembler* masm, |
| 1811 | Register dst, |
| 1812 | Register src1, |
| 1813 | T src2) { |
| 1814 | // No overflow checking. Use only when it's known that |
| 1815 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1816 | if (!dst.is(src1)) { |
| 1817 | masm->movp(dst, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1818 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1819 | masm->subp(dst, src2); |
| 1820 | masm->Assert(no_overflow, kSmiSubtractionOverflow); |
| 1821 | } |
| 1822 | |
| 1823 | |
| 1824 | void MacroAssembler::SmiSub(Register dst, Register src1, Register src2) { |
| 1825 | DCHECK(!dst.is(src2)); |
| 1826 | SmiSubNoOverflowHelper<Register>(this, dst, src1, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1827 | } |
| 1828 | |
| 1829 | |
| 1830 | void MacroAssembler::SmiSub(Register dst, |
| 1831 | Register src1, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1832 | const Operand& src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1833 | SmiSubNoOverflowHelper<Operand>(this, dst, src1, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1834 | } |
| 1835 | |
| 1836 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1837 | void MacroAssembler::SmiMul(Register dst, |
| 1838 | Register src1, |
| 1839 | Register src2, |
| 1840 | Label* on_not_smi_result, |
| 1841 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1842 | DCHECK(!dst.is(src2)); |
| 1843 | DCHECK(!dst.is(kScratchRegister)); |
| 1844 | DCHECK(!src1.is(kScratchRegister)); |
| 1845 | DCHECK(!src2.is(kScratchRegister)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1846 | |
| 1847 | if (dst.is(src1)) { |
| 1848 | Label failure, zero_correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1849 | movp(kScratchRegister, src1); // Create backup for later testing. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1850 | SmiToInteger64(dst, src1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1851 | imulp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1852 | j(overflow, &failure, Label::kNear); |
| 1853 | |
| 1854 | // Check for negative zero result. If product is zero, and one |
| 1855 | // argument is negative, go to slow case. |
| 1856 | Label correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1857 | testp(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1858 | j(not_zero, &correct_result, Label::kNear); |
| 1859 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1860 | movp(dst, kScratchRegister); |
| 1861 | xorp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1862 | // Result was positive zero. |
| 1863 | j(positive, &zero_correct_result, Label::kNear); |
| 1864 | |
| 1865 | bind(&failure); // Reused failure exit, restores src1. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1866 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1867 | jmp(on_not_smi_result, near_jump); |
| 1868 | |
| 1869 | bind(&zero_correct_result); |
| 1870 | Set(dst, 0); |
| 1871 | |
| 1872 | bind(&correct_result); |
| 1873 | } else { |
| 1874 | SmiToInteger64(dst, src1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1875 | imulp(dst, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1876 | j(overflow, on_not_smi_result, near_jump); |
| 1877 | // Check for negative zero result. If product is zero, and one |
| 1878 | // argument is negative, go to slow case. |
| 1879 | Label correct_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1880 | testp(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1881 | j(not_zero, &correct_result, Label::kNear); |
| 1882 | // One of src1 and src2 is zero, the check whether the other is |
| 1883 | // negative. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1884 | movp(kScratchRegister, src1); |
| 1885 | xorp(kScratchRegister, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1886 | j(negative, on_not_smi_result, near_jump); |
| 1887 | bind(&correct_result); |
| 1888 | } |
| 1889 | } |
| 1890 | |
| 1891 | |
| 1892 | void MacroAssembler::SmiDiv(Register dst, |
| 1893 | Register src1, |
| 1894 | Register src2, |
| 1895 | Label* on_not_smi_result, |
| 1896 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1897 | DCHECK(!src1.is(kScratchRegister)); |
| 1898 | DCHECK(!src2.is(kScratchRegister)); |
| 1899 | DCHECK(!dst.is(kScratchRegister)); |
| 1900 | DCHECK(!src2.is(rax)); |
| 1901 | DCHECK(!src2.is(rdx)); |
| 1902 | DCHECK(!src1.is(rdx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1903 | |
| 1904 | // Check for 0 divisor (result is +/-Infinity). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1905 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1906 | j(zero, on_not_smi_result, near_jump); |
| 1907 | |
| 1908 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1909 | movp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1910 | } |
| 1911 | SmiToInteger32(rax, src1); |
| 1912 | // We need to rule out dividing Smi::kMinValue by -1, since that would |
| 1913 | // overflow in idiv and raise an exception. |
| 1914 | // We combine this with negative zero test (negative zero only happens |
| 1915 | // when dividing zero by a negative number). |
| 1916 | |
| 1917 | // We overshoot a little and go to slow case if we divide min-value |
| 1918 | // by any negative value, not just -1. |
| 1919 | Label safe_div; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1920 | testl(rax, Immediate(~Smi::kMinValue)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1921 | j(not_zero, &safe_div, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1922 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1923 | if (src1.is(rax)) { |
| 1924 | j(positive, &safe_div, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1925 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1926 | jmp(on_not_smi_result, near_jump); |
| 1927 | } else { |
| 1928 | j(negative, on_not_smi_result, near_jump); |
| 1929 | } |
| 1930 | bind(&safe_div); |
| 1931 | |
| 1932 | SmiToInteger32(src2, src2); |
| 1933 | // Sign extend src1 into edx:eax. |
| 1934 | cdq(); |
| 1935 | idivl(src2); |
| 1936 | Integer32ToSmi(src2, src2); |
| 1937 | // Check that the remainder is zero. |
| 1938 | testl(rdx, rdx); |
| 1939 | if (src1.is(rax)) { |
| 1940 | Label smi_result; |
| 1941 | j(zero, &smi_result, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1942 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1943 | jmp(on_not_smi_result, near_jump); |
| 1944 | bind(&smi_result); |
| 1945 | } else { |
| 1946 | j(not_zero, on_not_smi_result, near_jump); |
| 1947 | } |
| 1948 | if (!dst.is(src1) && src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1949 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1950 | } |
| 1951 | Integer32ToSmi(dst, rax); |
| 1952 | } |
| 1953 | |
| 1954 | |
| 1955 | void MacroAssembler::SmiMod(Register dst, |
| 1956 | Register src1, |
| 1957 | Register src2, |
| 1958 | Label* on_not_smi_result, |
| 1959 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1960 | DCHECK(!dst.is(kScratchRegister)); |
| 1961 | DCHECK(!src1.is(kScratchRegister)); |
| 1962 | DCHECK(!src2.is(kScratchRegister)); |
| 1963 | DCHECK(!src2.is(rax)); |
| 1964 | DCHECK(!src2.is(rdx)); |
| 1965 | DCHECK(!src1.is(rdx)); |
| 1966 | DCHECK(!src1.is(src2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1967 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1968 | testp(src2, src2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1969 | j(zero, on_not_smi_result, near_jump); |
| 1970 | |
| 1971 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1972 | movp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1973 | } |
| 1974 | SmiToInteger32(rax, src1); |
| 1975 | SmiToInteger32(src2, src2); |
| 1976 | |
| 1977 | // Test for the edge case of dividing Smi::kMinValue by -1 (will overflow). |
| 1978 | Label safe_div; |
| 1979 | cmpl(rax, Immediate(Smi::kMinValue)); |
| 1980 | j(not_equal, &safe_div, Label::kNear); |
| 1981 | cmpl(src2, Immediate(-1)); |
| 1982 | j(not_equal, &safe_div, Label::kNear); |
| 1983 | // Retag inputs and go slow case. |
| 1984 | Integer32ToSmi(src2, src2); |
| 1985 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1986 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1987 | } |
| 1988 | jmp(on_not_smi_result, near_jump); |
| 1989 | bind(&safe_div); |
| 1990 | |
| 1991 | // Sign extend eax into edx:eax. |
| 1992 | cdq(); |
| 1993 | idivl(src2); |
| 1994 | // Restore smi tags on inputs. |
| 1995 | Integer32ToSmi(src2, src2); |
| 1996 | if (src1.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1997 | movp(src1, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1998 | } |
| 1999 | // Check for a negative zero result. If the result is zero, and the |
| 2000 | // dividend is negative, go slow to return a floating point negative zero. |
| 2001 | Label smi_result; |
| 2002 | testl(rdx, rdx); |
| 2003 | j(not_zero, &smi_result, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2004 | testp(src1, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2005 | j(negative, on_not_smi_result, near_jump); |
| 2006 | bind(&smi_result); |
| 2007 | Integer32ToSmi(dst, rdx); |
| 2008 | } |
| 2009 | |
| 2010 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2011 | void MacroAssembler::SmiNot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2012 | DCHECK(!dst.is(kScratchRegister)); |
| 2013 | DCHECK(!src.is(kScratchRegister)); |
| 2014 | if (SmiValuesAre32Bits()) { |
| 2015 | // Set tag and padding bits before negating, so that they are zero |
| 2016 | // afterwards. |
| 2017 | movl(kScratchRegister, Immediate(~0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2018 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2019 | DCHECK(SmiValuesAre31Bits()); |
| 2020 | movl(kScratchRegister, Immediate(1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2021 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2022 | if (dst.is(src)) { |
| 2023 | xorp(dst, kScratchRegister); |
| 2024 | } else { |
| 2025 | leap(dst, Operand(src, kScratchRegister, times_1, 0)); |
| 2026 | } |
| 2027 | notp(dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2028 | } |
| 2029 | |
| 2030 | |
| 2031 | void MacroAssembler::SmiAnd(Register dst, Register src1, Register src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2032 | DCHECK(!dst.is(src2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2033 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2034 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2035 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2036 | andp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2037 | } |
| 2038 | |
| 2039 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2040 | void MacroAssembler::SmiAndConstant(Register dst, Register src, Smi* constant) { |
| 2041 | if (constant->value() == 0) { |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 2042 | Set(dst, 0); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2043 | } else if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2044 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2045 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2046 | andp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2047 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2048 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2049 | andp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2050 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2051 | } |
| 2052 | |
| 2053 | |
| 2054 | void MacroAssembler::SmiOr(Register dst, Register src1, Register src2) { |
| 2055 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2056 | DCHECK(!src1.is(src2)); |
| 2057 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2058 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2059 | orp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2060 | } |
| 2061 | |
| 2062 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2063 | void MacroAssembler::SmiOrConstant(Register dst, Register src, Smi* constant) { |
| 2064 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2065 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2066 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2067 | orp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2068 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2069 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2070 | orp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2071 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2072 | } |
| 2073 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2074 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2075 | void MacroAssembler::SmiXor(Register dst, Register src1, Register src2) { |
| 2076 | if (!dst.is(src1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2077 | DCHECK(!src1.is(src2)); |
| 2078 | movp(dst, src1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2079 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2080 | xorp(dst, src2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2081 | } |
| 2082 | |
| 2083 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2084 | void MacroAssembler::SmiXorConstant(Register dst, Register src, Smi* constant) { |
| 2085 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2086 | DCHECK(!dst.is(kScratchRegister)); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2087 | Register constant_reg = GetSmiConstant(constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2088 | xorp(dst, constant_reg); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2089 | } else { |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 2090 | LoadSmiConstant(dst, constant); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2091 | xorp(dst, src); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2092 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2093 | } |
| 2094 | |
| 2095 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2096 | void MacroAssembler::SmiShiftArithmeticRightConstant(Register dst, |
| 2097 | Register src, |
| 2098 | int shift_value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2099 | DCHECK(is_uint5(shift_value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2100 | if (shift_value > 0) { |
| 2101 | if (dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2102 | sarp(dst, Immediate(shift_value + kSmiShift)); |
| 2103 | shlp(dst, Immediate(kSmiShift)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2104 | } else { |
| 2105 | UNIMPLEMENTED(); // Not used. |
| 2106 | } |
| 2107 | } |
| 2108 | } |
| 2109 | |
| 2110 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2111 | void MacroAssembler::SmiShiftLeftConstant(Register dst, |
| 2112 | Register src, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2113 | int shift_value, |
| 2114 | Label* on_not_smi_result, |
| 2115 | Label::Distance near_jump) { |
| 2116 | if (SmiValuesAre32Bits()) { |
| 2117 | if (!dst.is(src)) { |
| 2118 | movp(dst, src); |
| 2119 | } |
| 2120 | if (shift_value > 0) { |
| 2121 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 2122 | shlq(dst, Immediate(shift_value & 0x1f)); |
| 2123 | } |
| 2124 | } else { |
| 2125 | DCHECK(SmiValuesAre31Bits()); |
| 2126 | if (dst.is(src)) { |
| 2127 | UNIMPLEMENTED(); // Not used. |
| 2128 | } else { |
| 2129 | SmiToInteger32(dst, src); |
| 2130 | shll(dst, Immediate(shift_value)); |
| 2131 | JumpIfNotValidSmiValue(dst, on_not_smi_result, near_jump); |
| 2132 | Integer32ToSmi(dst, dst); |
| 2133 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2134 | } |
| 2135 | } |
| 2136 | |
| 2137 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2138 | void MacroAssembler::SmiShiftLogicalRightConstant( |
| 2139 | Register dst, Register src, int shift_value, |
| 2140 | Label* on_not_smi_result, Label::Distance near_jump) { |
| 2141 | // Logic right shift interprets its result as an *unsigned* number. |
| 2142 | if (dst.is(src)) { |
| 2143 | UNIMPLEMENTED(); // Not used. |
| 2144 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2145 | if (shift_value == 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2146 | testp(src, src); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2147 | j(negative, on_not_smi_result, near_jump); |
| 2148 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2149 | if (SmiValuesAre32Bits()) { |
| 2150 | movp(dst, src); |
| 2151 | shrp(dst, Immediate(shift_value + kSmiShift)); |
| 2152 | shlp(dst, Immediate(kSmiShift)); |
| 2153 | } else { |
| 2154 | DCHECK(SmiValuesAre31Bits()); |
| 2155 | SmiToInteger32(dst, src); |
| 2156 | shrp(dst, Immediate(shift_value)); |
| 2157 | JumpIfUIntNotValidSmiValue(dst, on_not_smi_result, near_jump); |
| 2158 | Integer32ToSmi(dst, dst); |
| 2159 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2160 | } |
| 2161 | } |
| 2162 | |
| 2163 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2164 | void MacroAssembler::SmiShiftLeft(Register dst, |
| 2165 | Register src1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2166 | Register src2, |
| 2167 | Label* on_not_smi_result, |
| 2168 | Label::Distance near_jump) { |
| 2169 | if (SmiValuesAre32Bits()) { |
| 2170 | DCHECK(!dst.is(rcx)); |
| 2171 | if (!dst.is(src1)) { |
| 2172 | movp(dst, src1); |
| 2173 | } |
| 2174 | // Untag shift amount. |
| 2175 | SmiToInteger32(rcx, src2); |
| 2176 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 2177 | andp(rcx, Immediate(0x1f)); |
| 2178 | shlq_cl(dst); |
| 2179 | } else { |
| 2180 | DCHECK(SmiValuesAre31Bits()); |
| 2181 | DCHECK(!dst.is(kScratchRegister)); |
| 2182 | DCHECK(!src1.is(kScratchRegister)); |
| 2183 | DCHECK(!src2.is(kScratchRegister)); |
| 2184 | DCHECK(!dst.is(src2)); |
| 2185 | DCHECK(!dst.is(rcx)); |
| 2186 | |
| 2187 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2188 | movq(kScratchRegister, rcx); |
| 2189 | } |
| 2190 | if (dst.is(src1)) { |
| 2191 | UNIMPLEMENTED(); // Not used. |
| 2192 | } else { |
| 2193 | Label valid_result; |
| 2194 | SmiToInteger32(dst, src1); |
| 2195 | SmiToInteger32(rcx, src2); |
| 2196 | shll_cl(dst); |
| 2197 | JumpIfValidSmiValue(dst, &valid_result, Label::kNear); |
| 2198 | // As src1 or src2 could not be dst, we do not need to restore them for |
| 2199 | // clobbering dst. |
| 2200 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2201 | if (src1.is(rcx)) { |
| 2202 | movq(src1, kScratchRegister); |
| 2203 | } else { |
| 2204 | movq(src2, kScratchRegister); |
| 2205 | } |
| 2206 | } |
| 2207 | jmp(on_not_smi_result, near_jump); |
| 2208 | bind(&valid_result); |
| 2209 | Integer32ToSmi(dst, dst); |
| 2210 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2211 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2212 | } |
| 2213 | |
| 2214 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2215 | void MacroAssembler::SmiShiftLogicalRight(Register dst, |
| 2216 | Register src1, |
| 2217 | Register src2, |
| 2218 | Label* on_not_smi_result, |
| 2219 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2220 | DCHECK(!dst.is(kScratchRegister)); |
| 2221 | DCHECK(!src1.is(kScratchRegister)); |
| 2222 | DCHECK(!src2.is(kScratchRegister)); |
| 2223 | DCHECK(!dst.is(src2)); |
| 2224 | DCHECK(!dst.is(rcx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2225 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2226 | movq(kScratchRegister, rcx); |
| 2227 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2228 | if (dst.is(src1)) { |
| 2229 | UNIMPLEMENTED(); // Not used. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2230 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2231 | Label valid_result; |
| 2232 | SmiToInteger32(dst, src1); |
| 2233 | SmiToInteger32(rcx, src2); |
| 2234 | shrl_cl(dst); |
| 2235 | JumpIfUIntValidSmiValue(dst, &valid_result, Label::kNear); |
| 2236 | // As src1 or src2 could not be dst, we do not need to restore them for |
| 2237 | // clobbering dst. |
| 2238 | if (src1.is(rcx) || src2.is(rcx)) { |
| 2239 | if (src1.is(rcx)) { |
| 2240 | movq(src1, kScratchRegister); |
| 2241 | } else { |
| 2242 | movq(src2, kScratchRegister); |
| 2243 | } |
| 2244 | } |
| 2245 | jmp(on_not_smi_result, near_jump); |
| 2246 | bind(&valid_result); |
| 2247 | Integer32ToSmi(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2248 | } |
| 2249 | } |
| 2250 | |
| 2251 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2252 | void MacroAssembler::SmiShiftArithmeticRight(Register dst, |
| 2253 | Register src1, |
| 2254 | Register src2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2255 | DCHECK(!dst.is(kScratchRegister)); |
| 2256 | DCHECK(!src1.is(kScratchRegister)); |
| 2257 | DCHECK(!src2.is(kScratchRegister)); |
| 2258 | DCHECK(!dst.is(rcx)); |
| 2259 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2260 | SmiToInteger32(rcx, src2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2261 | if (!dst.is(src1)) { |
| 2262 | movp(dst, src1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2263 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2264 | SmiToInteger32(dst, dst); |
| 2265 | sarl_cl(dst); |
| 2266 | Integer32ToSmi(dst, dst); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2267 | } |
| 2268 | |
| 2269 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2270 | void MacroAssembler::SelectNonSmi(Register dst, |
| 2271 | Register src1, |
| 2272 | Register src2, |
| 2273 | Label* on_not_smis, |
| 2274 | Label::Distance near_jump) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2275 | DCHECK(!dst.is(kScratchRegister)); |
| 2276 | DCHECK(!src1.is(kScratchRegister)); |
| 2277 | DCHECK(!src2.is(kScratchRegister)); |
| 2278 | DCHECK(!dst.is(src1)); |
| 2279 | DCHECK(!dst.is(src2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2280 | // Both operands must not be smis. |
| 2281 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2282 | Condition not_both_smis = NegateCondition(CheckBothSmi(src1, src2)); |
| 2283 | Check(not_both_smis, kBothRegistersWereSmisInSelectNonSmi); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2284 | #endif |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2285 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2286 | DCHECK_EQ(static_cast<Smi*>(0), Smi::FromInt(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2287 | movl(kScratchRegister, Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2288 | andp(kScratchRegister, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2289 | testl(kScratchRegister, src2); |
| 2290 | // If non-zero then both are smis. |
| 2291 | j(not_zero, on_not_smis, near_jump); |
| 2292 | |
| 2293 | // Exactly one operand is a smi. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2294 | DCHECK_EQ(1, static_cast<int>(kSmiTagMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2295 | // kScratchRegister still holds src1 & kSmiTag, which is either zero or one. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2296 | subp(kScratchRegister, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2297 | // 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] | 2298 | movp(dst, src1); |
| 2299 | xorp(dst, src2); |
| 2300 | andp(dst, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2301 | // 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] | 2302 | xorp(dst, src1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2303 | // If src1 is a smi, dst is src2, else it is src1, i.e., the non-smi. |
| 2304 | } |
| 2305 | |
| 2306 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2307 | SmiIndex MacroAssembler::SmiToIndex(Register dst, |
| 2308 | Register src, |
| 2309 | int shift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2310 | if (SmiValuesAre32Bits()) { |
| 2311 | DCHECK(is_uint6(shift)); |
| 2312 | // There is a possible optimization if shift is in the range 60-63, but that |
| 2313 | // will (and must) never happen. |
| 2314 | if (!dst.is(src)) { |
| 2315 | movp(dst, src); |
| 2316 | } |
| 2317 | if (shift < kSmiShift) { |
| 2318 | sarp(dst, Immediate(kSmiShift - shift)); |
| 2319 | } else { |
| 2320 | shlp(dst, Immediate(shift - kSmiShift)); |
| 2321 | } |
| 2322 | return SmiIndex(dst, times_1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2323 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2324 | DCHECK(SmiValuesAre31Bits()); |
| 2325 | DCHECK(shift >= times_1 && shift <= (static_cast<int>(times_8) + 1)); |
| 2326 | if (!dst.is(src)) { |
| 2327 | movp(dst, src); |
| 2328 | } |
| 2329 | // We have to sign extend the index register to 64-bit as the SMI might |
| 2330 | // be negative. |
| 2331 | movsxlq(dst, dst); |
| 2332 | if (shift == times_1) { |
| 2333 | sarq(dst, Immediate(kSmiShift)); |
| 2334 | return SmiIndex(dst, times_1); |
| 2335 | } |
| 2336 | return SmiIndex(dst, static_cast<ScaleFactor>(shift - 1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2337 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2338 | } |
| 2339 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2340 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2341 | SmiIndex MacroAssembler::SmiToNegativeIndex(Register dst, |
| 2342 | Register src, |
| 2343 | int shift) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2344 | if (SmiValuesAre32Bits()) { |
| 2345 | // Register src holds a positive smi. |
| 2346 | DCHECK(is_uint6(shift)); |
| 2347 | if (!dst.is(src)) { |
| 2348 | movp(dst, src); |
| 2349 | } |
| 2350 | negp(dst); |
| 2351 | if (shift < kSmiShift) { |
| 2352 | sarp(dst, Immediate(kSmiShift - shift)); |
| 2353 | } else { |
| 2354 | shlp(dst, Immediate(shift - kSmiShift)); |
| 2355 | } |
| 2356 | return SmiIndex(dst, times_1); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2357 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2358 | DCHECK(SmiValuesAre31Bits()); |
| 2359 | DCHECK(shift >= times_1 && shift <= (static_cast<int>(times_8) + 1)); |
| 2360 | if (!dst.is(src)) { |
| 2361 | movp(dst, src); |
| 2362 | } |
| 2363 | negq(dst); |
| 2364 | if (shift == times_1) { |
| 2365 | sarq(dst, Immediate(kSmiShift)); |
| 2366 | return SmiIndex(dst, times_1); |
| 2367 | } |
| 2368 | return SmiIndex(dst, static_cast<ScaleFactor>(shift - 1)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2369 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2370 | } |
| 2371 | |
| 2372 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2373 | void MacroAssembler::AddSmiField(Register dst, const Operand& src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2374 | if (SmiValuesAre32Bits()) { |
| 2375 | DCHECK_EQ(0, kSmiShift % kBitsPerByte); |
| 2376 | addl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 2377 | } else { |
| 2378 | DCHECK(SmiValuesAre31Bits()); |
| 2379 | SmiToInteger32(kScratchRegister, src); |
| 2380 | addl(dst, kScratchRegister); |
| 2381 | } |
| 2382 | } |
| 2383 | |
| 2384 | |
| 2385 | void MacroAssembler::Push(Smi* source) { |
| 2386 | intptr_t smi = reinterpret_cast<intptr_t>(source); |
| 2387 | if (is_int32(smi)) { |
| 2388 | Push(Immediate(static_cast<int32_t>(smi))); |
| 2389 | } else { |
| 2390 | Register constant = GetSmiConstant(source); |
| 2391 | Push(constant); |
| 2392 | } |
| 2393 | } |
| 2394 | |
| 2395 | |
| 2396 | void MacroAssembler::PushRegisterAsTwoSmis(Register src, Register scratch) { |
| 2397 | DCHECK(!src.is(scratch)); |
| 2398 | movp(scratch, src); |
| 2399 | // High bits. |
| 2400 | shrp(src, Immediate(kPointerSize * kBitsPerByte - kSmiShift)); |
| 2401 | shlp(src, Immediate(kSmiShift)); |
| 2402 | Push(src); |
| 2403 | // Low bits. |
| 2404 | shlp(scratch, Immediate(kSmiShift)); |
| 2405 | Push(scratch); |
| 2406 | } |
| 2407 | |
| 2408 | |
| 2409 | void MacroAssembler::PopRegisterAsTwoSmis(Register dst, Register scratch) { |
| 2410 | DCHECK(!dst.is(scratch)); |
| 2411 | Pop(scratch); |
| 2412 | // Low bits. |
| 2413 | shrp(scratch, Immediate(kSmiShift)); |
| 2414 | Pop(dst); |
| 2415 | shrp(dst, Immediate(kSmiShift)); |
| 2416 | // High bits. |
| 2417 | shlp(dst, Immediate(kPointerSize * kBitsPerByte - kSmiShift)); |
| 2418 | orp(dst, scratch); |
| 2419 | } |
| 2420 | |
| 2421 | |
| 2422 | void MacroAssembler::Test(const Operand& src, Smi* source) { |
| 2423 | if (SmiValuesAre32Bits()) { |
| 2424 | testl(Operand(src, kIntSize), Immediate(source->value())); |
| 2425 | } else { |
| 2426 | DCHECK(SmiValuesAre31Bits()); |
| 2427 | testl(src, Immediate(source)); |
| 2428 | } |
| 2429 | } |
| 2430 | |
| 2431 | |
| 2432 | // ---------------------------------------------------------------------------- |
| 2433 | |
| 2434 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2435 | void MacroAssembler::JumpIfNotString(Register object, |
| 2436 | Register object_map, |
| 2437 | Label* not_string, |
| 2438 | Label::Distance near_jump) { |
| 2439 | Condition is_smi = CheckSmi(object); |
| 2440 | j(is_smi, not_string, near_jump); |
| 2441 | CmpObjectType(object, FIRST_NONSTRING_TYPE, object_map); |
| 2442 | j(above_equal, not_string, near_jump); |
| 2443 | } |
| 2444 | |
| 2445 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2446 | void MacroAssembler::JumpIfNotBothSequentialOneByteStrings( |
| 2447 | Register first_object, Register second_object, Register scratch1, |
| 2448 | Register scratch2, Label* on_fail, Label::Distance near_jump) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2449 | // Check that both objects are not smis. |
| 2450 | Condition either_smi = CheckEitherSmi(first_object, second_object); |
| 2451 | j(either_smi, on_fail, near_jump); |
| 2452 | |
| 2453 | // Load instance type for both strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2454 | movp(scratch1, FieldOperand(first_object, HeapObject::kMapOffset)); |
| 2455 | movp(scratch2, FieldOperand(second_object, HeapObject::kMapOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2456 | movzxbl(scratch1, FieldOperand(scratch1, Map::kInstanceTypeOffset)); |
| 2457 | movzxbl(scratch2, FieldOperand(scratch2, Map::kInstanceTypeOffset)); |
| 2458 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2459 | // Check that both are flat one-byte strings. |
| 2460 | DCHECK(kNotStringTag != 0); |
| 2461 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2462 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2463 | const int kFlatOneByteStringTag = |
| 2464 | kStringTag | kOneByteStringTag | kSeqStringTag; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2465 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2466 | andl(scratch1, Immediate(kFlatOneByteStringMask)); |
| 2467 | andl(scratch2, Immediate(kFlatOneByteStringMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2468 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2469 | DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
| 2470 | leap(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2471 | cmpl(scratch1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2472 | Immediate(kFlatOneByteStringTag + (kFlatOneByteStringTag << 3))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2473 | j(not_equal, on_fail, near_jump); |
| 2474 | } |
| 2475 | |
| 2476 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2477 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialOneByte( |
| 2478 | Register instance_type, Register scratch, Label* failure, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2479 | Label::Distance near_jump) { |
| 2480 | if (!scratch.is(instance_type)) { |
| 2481 | movl(scratch, instance_type); |
| 2482 | } |
| 2483 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2484 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2485 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 2486 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2487 | andl(scratch, Immediate(kFlatOneByteStringMask)); |
| 2488 | cmpl(scratch, Immediate(kStringTag | kSeqStringTag | kOneByteStringTag)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2489 | j(not_equal, failure, near_jump); |
| 2490 | } |
| 2491 | |
| 2492 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2493 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialOneByte( |
| 2494 | Register first_object_instance_type, Register second_object_instance_type, |
| 2495 | Register scratch1, Register scratch2, Label* on_fail, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2496 | Label::Distance near_jump) { |
| 2497 | // Load instance type for both strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2498 | movp(scratch1, first_object_instance_type); |
| 2499 | movp(scratch2, second_object_instance_type); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2500 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2501 | // Check that both are flat one-byte strings. |
| 2502 | DCHECK(kNotStringTag != 0); |
| 2503 | const int kFlatOneByteStringMask = |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2504 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2505 | const int kFlatOneByteStringTag = |
| 2506 | kStringTag | kOneByteStringTag | kSeqStringTag; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2507 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2508 | andl(scratch1, Immediate(kFlatOneByteStringMask)); |
| 2509 | andl(scratch2, Immediate(kFlatOneByteStringMask)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2510 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2511 | DCHECK_EQ(0, kFlatOneByteStringMask & (kFlatOneByteStringMask << 3)); |
| 2512 | leap(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2513 | cmpl(scratch1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2514 | Immediate(kFlatOneByteStringTag + (kFlatOneByteStringTag << 3))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2515 | j(not_equal, on_fail, near_jump); |
| 2516 | } |
| 2517 | |
| 2518 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2519 | template<class T> |
| 2520 | static void JumpIfNotUniqueNameHelper(MacroAssembler* masm, |
| 2521 | T operand_or_register, |
| 2522 | Label* not_unique_name, |
| 2523 | Label::Distance distance) { |
| 2524 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 2525 | Label succeed; |
| 2526 | masm->testb(operand_or_register, |
| 2527 | Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 2528 | masm->j(zero, &succeed, Label::kNear); |
| 2529 | masm->cmpb(operand_or_register, Immediate(static_cast<uint8_t>(SYMBOL_TYPE))); |
| 2530 | masm->j(not_equal, not_unique_name, distance); |
| 2531 | |
| 2532 | masm->bind(&succeed); |
| 2533 | } |
| 2534 | |
| 2535 | |
| 2536 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Operand operand, |
| 2537 | Label* not_unique_name, |
| 2538 | Label::Distance distance) { |
| 2539 | JumpIfNotUniqueNameHelper<Operand>(this, operand, not_unique_name, distance); |
| 2540 | } |
| 2541 | |
| 2542 | |
| 2543 | void MacroAssembler::JumpIfNotUniqueNameInstanceType(Register reg, |
| 2544 | Label* not_unique_name, |
| 2545 | Label::Distance distance) { |
| 2546 | JumpIfNotUniqueNameHelper<Register>(this, reg, not_unique_name, distance); |
| 2547 | } |
| 2548 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2549 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2550 | void MacroAssembler::Move(Register dst, Register src) { |
| 2551 | if (!dst.is(src)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2552 | movp(dst, src); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2553 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2554 | } |
| 2555 | |
| 2556 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2557 | void MacroAssembler::Move(Register dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2558 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2559 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2560 | Move(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2561 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2562 | MoveHeapObject(dst, source); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2563 | } |
| 2564 | } |
| 2565 | |
| 2566 | |
| 2567 | void MacroAssembler::Move(const Operand& dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2568 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2569 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2570 | Move(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2571 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2572 | MoveHeapObject(kScratchRegister, source); |
| 2573 | movp(dst, kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2574 | } |
| 2575 | } |
| 2576 | |
| 2577 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2578 | void MacroAssembler::Move(XMMRegister dst, uint32_t src) { |
| 2579 | if (src == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2580 | Xorpd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2581 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2582 | unsigned pop = base::bits::CountPopulation32(src); |
| 2583 | DCHECK_NE(0u, pop); |
| 2584 | if (pop == 32) { |
| 2585 | Pcmpeqd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2586 | } else { |
| 2587 | movl(kScratchRegister, Immediate(src)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2588 | Movq(dst, kScratchRegister); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2589 | } |
| 2590 | } |
| 2591 | } |
| 2592 | |
| 2593 | |
| 2594 | void MacroAssembler::Move(XMMRegister dst, uint64_t src) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2595 | if (src == 0) { |
| 2596 | Xorpd(dst, dst); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2597 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2598 | unsigned nlz = base::bits::CountLeadingZeros64(src); |
| 2599 | unsigned ntz = base::bits::CountTrailingZeros64(src); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2600 | unsigned pop = base::bits::CountPopulation64(src); |
| 2601 | DCHECK_NE(0u, pop); |
| 2602 | if (pop == 64) { |
| 2603 | Pcmpeqd(dst, dst); |
| 2604 | } else if (pop + ntz == 64) { |
| 2605 | Pcmpeqd(dst, dst); |
| 2606 | Psllq(dst, ntz); |
| 2607 | } else if (pop + nlz == 64) { |
| 2608 | Pcmpeqd(dst, dst); |
| 2609 | Psrlq(dst, nlz); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2610 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2611 | uint32_t lower = static_cast<uint32_t>(src); |
| 2612 | uint32_t upper = static_cast<uint32_t>(src >> 32); |
| 2613 | if (upper == 0) { |
| 2614 | Move(dst, lower); |
| 2615 | } else { |
| 2616 | movq(kScratchRegister, src); |
| 2617 | Movq(dst, kScratchRegister); |
| 2618 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2619 | } |
| 2620 | } |
| 2621 | } |
| 2622 | |
| 2623 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2624 | void MacroAssembler::Movaps(XMMRegister dst, XMMRegister src) { |
| 2625 | if (CpuFeatures::IsSupported(AVX)) { |
| 2626 | CpuFeatureScope scope(this, AVX); |
| 2627 | vmovaps(dst, src); |
| 2628 | } else { |
| 2629 | movaps(dst, src); |
| 2630 | } |
| 2631 | } |
| 2632 | |
| 2633 | |
| 2634 | void MacroAssembler::Movapd(XMMRegister dst, XMMRegister src) { |
| 2635 | if (CpuFeatures::IsSupported(AVX)) { |
| 2636 | CpuFeatureScope scope(this, AVX); |
| 2637 | vmovapd(dst, src); |
| 2638 | } else { |
| 2639 | movapd(dst, src); |
| 2640 | } |
| 2641 | } |
| 2642 | |
| 2643 | |
| 2644 | void MacroAssembler::Movsd(XMMRegister dst, XMMRegister src) { |
| 2645 | if (CpuFeatures::IsSupported(AVX)) { |
| 2646 | CpuFeatureScope scope(this, AVX); |
| 2647 | vmovsd(dst, dst, src); |
| 2648 | } else { |
| 2649 | movsd(dst, src); |
| 2650 | } |
| 2651 | } |
| 2652 | |
| 2653 | |
| 2654 | void MacroAssembler::Movsd(XMMRegister dst, const Operand& src) { |
| 2655 | if (CpuFeatures::IsSupported(AVX)) { |
| 2656 | CpuFeatureScope scope(this, AVX); |
| 2657 | vmovsd(dst, src); |
| 2658 | } else { |
| 2659 | movsd(dst, src); |
| 2660 | } |
| 2661 | } |
| 2662 | |
| 2663 | |
| 2664 | void MacroAssembler::Movsd(const Operand& dst, XMMRegister src) { |
| 2665 | if (CpuFeatures::IsSupported(AVX)) { |
| 2666 | CpuFeatureScope scope(this, AVX); |
| 2667 | vmovsd(dst, src); |
| 2668 | } else { |
| 2669 | movsd(dst, src); |
| 2670 | } |
| 2671 | } |
| 2672 | |
| 2673 | |
| 2674 | void MacroAssembler::Movss(XMMRegister dst, XMMRegister src) { |
| 2675 | if (CpuFeatures::IsSupported(AVX)) { |
| 2676 | CpuFeatureScope scope(this, AVX); |
| 2677 | vmovss(dst, dst, src); |
| 2678 | } else { |
| 2679 | movss(dst, src); |
| 2680 | } |
| 2681 | } |
| 2682 | |
| 2683 | |
| 2684 | void MacroAssembler::Movss(XMMRegister dst, const Operand& src) { |
| 2685 | if (CpuFeatures::IsSupported(AVX)) { |
| 2686 | CpuFeatureScope scope(this, AVX); |
| 2687 | vmovss(dst, src); |
| 2688 | } else { |
| 2689 | movss(dst, src); |
| 2690 | } |
| 2691 | } |
| 2692 | |
| 2693 | |
| 2694 | void MacroAssembler::Movss(const Operand& dst, XMMRegister src) { |
| 2695 | if (CpuFeatures::IsSupported(AVX)) { |
| 2696 | CpuFeatureScope scope(this, AVX); |
| 2697 | vmovss(dst, src); |
| 2698 | } else { |
| 2699 | movss(dst, src); |
| 2700 | } |
| 2701 | } |
| 2702 | |
| 2703 | |
| 2704 | void MacroAssembler::Movd(XMMRegister dst, Register src) { |
| 2705 | if (CpuFeatures::IsSupported(AVX)) { |
| 2706 | CpuFeatureScope scope(this, AVX); |
| 2707 | vmovd(dst, src); |
| 2708 | } else { |
| 2709 | movd(dst, src); |
| 2710 | } |
| 2711 | } |
| 2712 | |
| 2713 | |
| 2714 | void MacroAssembler::Movd(XMMRegister dst, const Operand& src) { |
| 2715 | if (CpuFeatures::IsSupported(AVX)) { |
| 2716 | CpuFeatureScope scope(this, AVX); |
| 2717 | vmovd(dst, src); |
| 2718 | } else { |
| 2719 | movd(dst, src); |
| 2720 | } |
| 2721 | } |
| 2722 | |
| 2723 | |
| 2724 | void MacroAssembler::Movd(Register dst, XMMRegister src) { |
| 2725 | if (CpuFeatures::IsSupported(AVX)) { |
| 2726 | CpuFeatureScope scope(this, AVX); |
| 2727 | vmovd(dst, src); |
| 2728 | } else { |
| 2729 | movd(dst, src); |
| 2730 | } |
| 2731 | } |
| 2732 | |
| 2733 | |
| 2734 | void MacroAssembler::Movq(XMMRegister dst, Register src) { |
| 2735 | if (CpuFeatures::IsSupported(AVX)) { |
| 2736 | CpuFeatureScope scope(this, AVX); |
| 2737 | vmovq(dst, src); |
| 2738 | } else { |
| 2739 | movq(dst, src); |
| 2740 | } |
| 2741 | } |
| 2742 | |
| 2743 | |
| 2744 | void MacroAssembler::Movq(Register dst, XMMRegister src) { |
| 2745 | if (CpuFeatures::IsSupported(AVX)) { |
| 2746 | CpuFeatureScope scope(this, AVX); |
| 2747 | vmovq(dst, src); |
| 2748 | } else { |
| 2749 | movq(dst, src); |
| 2750 | } |
| 2751 | } |
| 2752 | |
| 2753 | |
| 2754 | void MacroAssembler::Movmskpd(Register dst, XMMRegister src) { |
| 2755 | if (CpuFeatures::IsSupported(AVX)) { |
| 2756 | CpuFeatureScope scope(this, AVX); |
| 2757 | vmovmskpd(dst, src); |
| 2758 | } else { |
| 2759 | movmskpd(dst, src); |
| 2760 | } |
| 2761 | } |
| 2762 | |
| 2763 | |
| 2764 | void MacroAssembler::Roundss(XMMRegister dst, XMMRegister src, |
| 2765 | RoundingMode mode) { |
| 2766 | if (CpuFeatures::IsSupported(AVX)) { |
| 2767 | CpuFeatureScope scope(this, AVX); |
| 2768 | vroundss(dst, dst, src, mode); |
| 2769 | } else { |
| 2770 | roundss(dst, src, mode); |
| 2771 | } |
| 2772 | } |
| 2773 | |
| 2774 | |
| 2775 | void MacroAssembler::Roundsd(XMMRegister dst, XMMRegister src, |
| 2776 | RoundingMode mode) { |
| 2777 | if (CpuFeatures::IsSupported(AVX)) { |
| 2778 | CpuFeatureScope scope(this, AVX); |
| 2779 | vroundsd(dst, dst, src, mode); |
| 2780 | } else { |
| 2781 | roundsd(dst, src, mode); |
| 2782 | } |
| 2783 | } |
| 2784 | |
| 2785 | |
| 2786 | void MacroAssembler::Sqrtsd(XMMRegister dst, XMMRegister src) { |
| 2787 | if (CpuFeatures::IsSupported(AVX)) { |
| 2788 | CpuFeatureScope scope(this, AVX); |
| 2789 | vsqrtsd(dst, dst, src); |
| 2790 | } else { |
| 2791 | sqrtsd(dst, src); |
| 2792 | } |
| 2793 | } |
| 2794 | |
| 2795 | |
| 2796 | void MacroAssembler::Sqrtsd(XMMRegister dst, const Operand& src) { |
| 2797 | if (CpuFeatures::IsSupported(AVX)) { |
| 2798 | CpuFeatureScope scope(this, AVX); |
| 2799 | vsqrtsd(dst, dst, src); |
| 2800 | } else { |
| 2801 | sqrtsd(dst, src); |
| 2802 | } |
| 2803 | } |
| 2804 | |
| 2805 | |
| 2806 | void MacroAssembler::Ucomiss(XMMRegister src1, XMMRegister src2) { |
| 2807 | if (CpuFeatures::IsSupported(AVX)) { |
| 2808 | CpuFeatureScope scope(this, AVX); |
| 2809 | vucomiss(src1, src2); |
| 2810 | } else { |
| 2811 | ucomiss(src1, src2); |
| 2812 | } |
| 2813 | } |
| 2814 | |
| 2815 | |
| 2816 | void MacroAssembler::Ucomiss(XMMRegister src1, const Operand& src2) { |
| 2817 | if (CpuFeatures::IsSupported(AVX)) { |
| 2818 | CpuFeatureScope scope(this, AVX); |
| 2819 | vucomiss(src1, src2); |
| 2820 | } else { |
| 2821 | ucomiss(src1, src2); |
| 2822 | } |
| 2823 | } |
| 2824 | |
| 2825 | |
| 2826 | void MacroAssembler::Ucomisd(XMMRegister src1, XMMRegister src2) { |
| 2827 | if (CpuFeatures::IsSupported(AVX)) { |
| 2828 | CpuFeatureScope scope(this, AVX); |
| 2829 | vucomisd(src1, src2); |
| 2830 | } else { |
| 2831 | ucomisd(src1, src2); |
| 2832 | } |
| 2833 | } |
| 2834 | |
| 2835 | |
| 2836 | void MacroAssembler::Ucomisd(XMMRegister src1, const Operand& src2) { |
| 2837 | if (CpuFeatures::IsSupported(AVX)) { |
| 2838 | CpuFeatureScope scope(this, AVX); |
| 2839 | vucomisd(src1, src2); |
| 2840 | } else { |
| 2841 | ucomisd(src1, src2); |
| 2842 | } |
| 2843 | } |
| 2844 | |
| 2845 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2846 | void MacroAssembler::Cmp(Register dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2847 | AllowDeferredHandleDereference smi_check; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2848 | if (source->IsSmi()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2849 | Cmp(dst, Smi::cast(*source)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2850 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2851 | MoveHeapObject(kScratchRegister, source); |
| 2852 | cmpp(dst, kScratchRegister); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2853 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2854 | } |
| 2855 | |
| 2856 | |
| 2857 | void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2858 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2859 | if (source->IsSmi()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2860 | Cmp(dst, Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2861 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2862 | MoveHeapObject(kScratchRegister, source); |
| 2863 | cmpp(dst, kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2864 | } |
| 2865 | } |
| 2866 | |
| 2867 | |
| 2868 | void MacroAssembler::Push(Handle<Object> source) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2869 | AllowDeferredHandleDereference smi_check; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2870 | if (source->IsSmi()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2871 | Push(Smi::cast(*source)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2872 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2873 | MoveHeapObject(kScratchRegister, source); |
| 2874 | Push(kScratchRegister); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2875 | } |
| 2876 | } |
| 2877 | |
| 2878 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2879 | void MacroAssembler::MoveHeapObject(Register result, |
| 2880 | Handle<Object> object) { |
| 2881 | AllowDeferredHandleDereference using_raw_address; |
| 2882 | DCHECK(object->IsHeapObject()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2883 | if (isolate()->heap()->InNewSpace(*object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2884 | Handle<Cell> cell = isolate()->factory()->NewCell(object); |
| 2885 | Move(result, cell, RelocInfo::CELL); |
| 2886 | movp(result, Operand(result, 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2887 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2888 | Move(result, object, RelocInfo::EMBEDDED_OBJECT); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2889 | } |
| 2890 | } |
| 2891 | |
| 2892 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2893 | void MacroAssembler::LoadGlobalCell(Register dst, Handle<Cell> cell) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2894 | if (dst.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2895 | AllowDeferredHandleDereference embedding_raw_address; |
| 2896 | load_rax(cell.location(), RelocInfo::CELL); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2897 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2898 | Move(dst, cell, RelocInfo::CELL); |
| 2899 | movp(dst, Operand(dst, 0)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 2900 | } |
| 2901 | } |
| 2902 | |
| 2903 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2904 | void MacroAssembler::CmpWeakValue(Register value, Handle<WeakCell> cell, |
| 2905 | Register scratch) { |
| 2906 | Move(scratch, cell, RelocInfo::EMBEDDED_OBJECT); |
| 2907 | cmpp(value, FieldOperand(scratch, WeakCell::kValueOffset)); |
| 2908 | } |
| 2909 | |
| 2910 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2911 | void MacroAssembler::GetWeakValue(Register value, Handle<WeakCell> cell) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2912 | Move(value, cell, RelocInfo::EMBEDDED_OBJECT); |
| 2913 | movp(value, FieldOperand(value, WeakCell::kValueOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2914 | } |
| 2915 | |
| 2916 | |
| 2917 | void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell, |
| 2918 | Label* miss) { |
| 2919 | GetWeakValue(value, cell); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2920 | JumpIfSmi(value, miss); |
| 2921 | } |
| 2922 | |
| 2923 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 2924 | void MacroAssembler::Drop(int stack_elements) { |
| 2925 | if (stack_elements > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2926 | addp(rsp, Immediate(stack_elements * kPointerSize)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 2927 | } |
| 2928 | } |
| 2929 | |
| 2930 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2931 | void MacroAssembler::DropUnderReturnAddress(int stack_elements, |
| 2932 | Register scratch) { |
| 2933 | DCHECK(stack_elements > 0); |
| 2934 | if (kPointerSize == kInt64Size && stack_elements == 1) { |
| 2935 | popq(MemOperand(rsp, 0)); |
| 2936 | return; |
| 2937 | } |
| 2938 | |
| 2939 | PopReturnAddressTo(scratch); |
| 2940 | Drop(stack_elements); |
| 2941 | PushReturnAddressFrom(scratch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2942 | } |
| 2943 | |
| 2944 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2945 | void MacroAssembler::Push(Register src) { |
| 2946 | if (kPointerSize == kInt64Size) { |
| 2947 | pushq(src); |
| 2948 | } else { |
| 2949 | // x32 uses 64-bit push for rbp in the prologue. |
| 2950 | DCHECK(src.code() != rbp.code()); |
| 2951 | leal(rsp, Operand(rsp, -4)); |
| 2952 | movp(Operand(rsp, 0), src); |
| 2953 | } |
| 2954 | } |
| 2955 | |
| 2956 | |
| 2957 | void MacroAssembler::Push(const Operand& src) { |
| 2958 | if (kPointerSize == kInt64Size) { |
| 2959 | pushq(src); |
| 2960 | } else { |
| 2961 | movp(kScratchRegister, src); |
| 2962 | leal(rsp, Operand(rsp, -4)); |
| 2963 | movp(Operand(rsp, 0), kScratchRegister); |
| 2964 | } |
| 2965 | } |
| 2966 | |
| 2967 | |
| 2968 | void MacroAssembler::PushQuad(const Operand& src) { |
| 2969 | if (kPointerSize == kInt64Size) { |
| 2970 | pushq(src); |
| 2971 | } else { |
| 2972 | movp(kScratchRegister, src); |
| 2973 | pushq(kScratchRegister); |
| 2974 | } |
| 2975 | } |
| 2976 | |
| 2977 | |
| 2978 | void MacroAssembler::Push(Immediate value) { |
| 2979 | if (kPointerSize == kInt64Size) { |
| 2980 | pushq(value); |
| 2981 | } else { |
| 2982 | leal(rsp, Operand(rsp, -4)); |
| 2983 | movp(Operand(rsp, 0), value); |
| 2984 | } |
| 2985 | } |
| 2986 | |
| 2987 | |
| 2988 | void MacroAssembler::PushImm32(int32_t imm32) { |
| 2989 | if (kPointerSize == kInt64Size) { |
| 2990 | pushq_imm32(imm32); |
| 2991 | } else { |
| 2992 | leal(rsp, Operand(rsp, -4)); |
| 2993 | movp(Operand(rsp, 0), Immediate(imm32)); |
| 2994 | } |
| 2995 | } |
| 2996 | |
| 2997 | |
| 2998 | void MacroAssembler::Pop(Register dst) { |
| 2999 | if (kPointerSize == kInt64Size) { |
| 3000 | popq(dst); |
| 3001 | } else { |
| 3002 | // x32 uses 64-bit pop for rbp in the epilogue. |
| 3003 | DCHECK(dst.code() != rbp.code()); |
| 3004 | movp(dst, Operand(rsp, 0)); |
| 3005 | leal(rsp, Operand(rsp, 4)); |
| 3006 | } |
| 3007 | } |
| 3008 | |
| 3009 | |
| 3010 | void MacroAssembler::Pop(const Operand& dst) { |
| 3011 | if (kPointerSize == kInt64Size) { |
| 3012 | popq(dst); |
| 3013 | } else { |
| 3014 | Register scratch = dst.AddressUsesRegister(kScratchRegister) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3015 | ? kRootRegister : kScratchRegister; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3016 | movp(scratch, Operand(rsp, 0)); |
| 3017 | movp(dst, scratch); |
| 3018 | leal(rsp, Operand(rsp, 4)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3019 | if (scratch.is(kRootRegister)) { |
| 3020 | // Restore kRootRegister. |
| 3021 | InitializeRootRegister(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3022 | } |
| 3023 | } |
| 3024 | } |
| 3025 | |
| 3026 | |
| 3027 | void MacroAssembler::PopQuad(const Operand& dst) { |
| 3028 | if (kPointerSize == kInt64Size) { |
| 3029 | popq(dst); |
| 3030 | } else { |
| 3031 | popq(kScratchRegister); |
| 3032 | movp(dst, kScratchRegister); |
| 3033 | } |
| 3034 | } |
| 3035 | |
| 3036 | |
| 3037 | void MacroAssembler::LoadSharedFunctionInfoSpecialField(Register dst, |
| 3038 | Register base, |
| 3039 | int offset) { |
| 3040 | DCHECK(offset > SharedFunctionInfo::kLengthOffset && |
| 3041 | offset <= SharedFunctionInfo::kSize && |
| 3042 | (((offset - SharedFunctionInfo::kLengthOffset) / kIntSize) % 2 == 1)); |
| 3043 | if (kPointerSize == kInt64Size) { |
| 3044 | movsxlq(dst, FieldOperand(base, offset)); |
| 3045 | } else { |
| 3046 | movp(dst, FieldOperand(base, offset)); |
| 3047 | SmiToInteger32(dst, dst); |
| 3048 | } |
| 3049 | } |
| 3050 | |
| 3051 | |
| 3052 | void MacroAssembler::TestBitSharedFunctionInfoSpecialField(Register base, |
| 3053 | int offset, |
| 3054 | int bits) { |
| 3055 | DCHECK(offset > SharedFunctionInfo::kLengthOffset && |
| 3056 | offset <= SharedFunctionInfo::kSize && |
| 3057 | (((offset - SharedFunctionInfo::kLengthOffset) / kIntSize) % 2 == 1)); |
| 3058 | if (kPointerSize == kInt32Size) { |
| 3059 | // On x32, this field is represented by SMI. |
| 3060 | bits += kSmiShift; |
| 3061 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3062 | int byte_offset = bits / kBitsPerByte; |
| 3063 | int bit_in_byte = bits & (kBitsPerByte - 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3064 | testb(FieldOperand(base, offset + byte_offset), Immediate(1 << bit_in_byte)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3065 | } |
| 3066 | |
| 3067 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3068 | void MacroAssembler::Jump(ExternalReference ext) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3069 | LoadAddress(kScratchRegister, ext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3070 | jmp(kScratchRegister); |
| 3071 | } |
| 3072 | |
| 3073 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3074 | void MacroAssembler::Jump(const Operand& op) { |
| 3075 | if (kPointerSize == kInt64Size) { |
| 3076 | jmp(op); |
| 3077 | } else { |
| 3078 | movp(kScratchRegister, op); |
| 3079 | jmp(kScratchRegister); |
| 3080 | } |
| 3081 | } |
| 3082 | |
| 3083 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3084 | void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3085 | Move(kScratchRegister, destination, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3086 | jmp(kScratchRegister); |
| 3087 | } |
| 3088 | |
| 3089 | |
| 3090 | void MacroAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 3091 | // TODO(X64): Inline this |
| 3092 | jmp(code_object, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3093 | } |
| 3094 | |
| 3095 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3096 | int MacroAssembler::CallSize(ExternalReference ext) { |
| 3097 | // Opcode for call kScratchRegister is: Rex.B FF D4 (three bytes). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3098 | return LoadAddressSize(ext) + |
| 3099 | Assembler::kCallScratchRegisterInstructionLength; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3100 | } |
| 3101 | |
| 3102 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3103 | void MacroAssembler::Call(ExternalReference ext) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3104 | #ifdef DEBUG |
| 3105 | int end_position = pc_offset() + CallSize(ext); |
| 3106 | #endif |
| 3107 | LoadAddress(kScratchRegister, ext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3108 | call(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3109 | #ifdef DEBUG |
| 3110 | CHECK_EQ(end_position, pc_offset()); |
| 3111 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3112 | } |
| 3113 | |
| 3114 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3115 | void MacroAssembler::Call(const Operand& op) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3116 | if (kPointerSize == kInt64Size && !CpuFeatures::IsSupported(ATOM)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3117 | call(op); |
| 3118 | } else { |
| 3119 | movp(kScratchRegister, op); |
| 3120 | call(kScratchRegister); |
| 3121 | } |
| 3122 | } |
| 3123 | |
| 3124 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3125 | void MacroAssembler::Call(Address destination, RelocInfo::Mode rmode) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3126 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3127 | int end_position = pc_offset() + CallSize(destination); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3128 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3129 | Move(kScratchRegister, destination, rmode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3130 | call(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3131 | #ifdef DEBUG |
| 3132 | CHECK_EQ(pc_offset(), end_position); |
| 3133 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3134 | } |
| 3135 | |
| 3136 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3137 | void MacroAssembler::Call(Handle<Code> code_object, |
| 3138 | RelocInfo::Mode rmode, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3139 | TypeFeedbackId ast_id) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3140 | #ifdef DEBUG |
| 3141 | int end_position = pc_offset() + CallSize(code_object); |
| 3142 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3143 | DCHECK(RelocInfo::IsCodeTarget(rmode) || |
| 3144 | rmode == RelocInfo::CODE_AGE_SEQUENCE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3145 | call(code_object, rmode, ast_id); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3146 | #ifdef DEBUG |
| 3147 | CHECK_EQ(end_position, pc_offset()); |
| 3148 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3149 | } |
| 3150 | |
| 3151 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3152 | void MacroAssembler::Pextrd(Register dst, XMMRegister src, int8_t imm8) { |
| 3153 | if (imm8 == 0) { |
| 3154 | Movd(dst, src); |
| 3155 | return; |
| 3156 | } |
| 3157 | DCHECK_EQ(1, imm8); |
| 3158 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3159 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3160 | pextrd(dst, src, imm8); |
| 3161 | return; |
| 3162 | } |
| 3163 | movq(dst, src); |
| 3164 | shrq(dst, Immediate(32)); |
| 3165 | } |
| 3166 | |
| 3167 | |
| 3168 | void MacroAssembler::Pinsrd(XMMRegister dst, Register src, int8_t imm8) { |
| 3169 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3170 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3171 | pinsrd(dst, src, imm8); |
| 3172 | return; |
| 3173 | } |
| 3174 | Movd(xmm0, src); |
| 3175 | if (imm8 == 1) { |
| 3176 | punpckldq(dst, xmm0); |
| 3177 | } else { |
| 3178 | DCHECK_EQ(0, imm8); |
| 3179 | Movss(dst, xmm0); |
| 3180 | } |
| 3181 | } |
| 3182 | |
| 3183 | |
| 3184 | void MacroAssembler::Pinsrd(XMMRegister dst, const Operand& src, int8_t imm8) { |
| 3185 | DCHECK(imm8 == 0 || imm8 == 1); |
| 3186 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3187 | CpuFeatureScope sse_scope(this, SSE4_1); |
| 3188 | pinsrd(dst, src, imm8); |
| 3189 | return; |
| 3190 | } |
| 3191 | Movd(xmm0, src); |
| 3192 | if (imm8 == 1) { |
| 3193 | punpckldq(dst, xmm0); |
| 3194 | } else { |
| 3195 | DCHECK_EQ(0, imm8); |
| 3196 | Movss(dst, xmm0); |
| 3197 | } |
| 3198 | } |
| 3199 | |
| 3200 | |
| 3201 | void MacroAssembler::Lzcntl(Register dst, Register src) { |
| 3202 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3203 | CpuFeatureScope scope(this, LZCNT); |
| 3204 | lzcntl(dst, src); |
| 3205 | return; |
| 3206 | } |
| 3207 | Label not_zero_src; |
| 3208 | bsrl(dst, src); |
| 3209 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3210 | Set(dst, 63); // 63^31 == 32 |
| 3211 | bind(¬_zero_src); |
| 3212 | xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x |
| 3213 | } |
| 3214 | |
| 3215 | |
| 3216 | void MacroAssembler::Lzcntl(Register dst, const Operand& src) { |
| 3217 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3218 | CpuFeatureScope scope(this, LZCNT); |
| 3219 | lzcntl(dst, src); |
| 3220 | return; |
| 3221 | } |
| 3222 | Label not_zero_src; |
| 3223 | bsrl(dst, src); |
| 3224 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3225 | Set(dst, 63); // 63^31 == 32 |
| 3226 | bind(¬_zero_src); |
| 3227 | xorl(dst, Immediate(31)); // for x in [0..31], 31^x == 31 - x |
| 3228 | } |
| 3229 | |
| 3230 | |
| 3231 | void MacroAssembler::Lzcntq(Register dst, Register src) { |
| 3232 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3233 | CpuFeatureScope scope(this, LZCNT); |
| 3234 | lzcntq(dst, src); |
| 3235 | return; |
| 3236 | } |
| 3237 | Label not_zero_src; |
| 3238 | bsrq(dst, src); |
| 3239 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3240 | Set(dst, 127); // 127^63 == 64 |
| 3241 | bind(¬_zero_src); |
| 3242 | xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x |
| 3243 | } |
| 3244 | |
| 3245 | |
| 3246 | void MacroAssembler::Lzcntq(Register dst, const Operand& src) { |
| 3247 | if (CpuFeatures::IsSupported(LZCNT)) { |
| 3248 | CpuFeatureScope scope(this, LZCNT); |
| 3249 | lzcntq(dst, src); |
| 3250 | return; |
| 3251 | } |
| 3252 | Label not_zero_src; |
| 3253 | bsrq(dst, src); |
| 3254 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3255 | Set(dst, 127); // 127^63 == 64 |
| 3256 | bind(¬_zero_src); |
| 3257 | xorl(dst, Immediate(63)); // for x in [0..63], 63^x == 63 - x |
| 3258 | } |
| 3259 | |
| 3260 | |
| 3261 | void MacroAssembler::Tzcntq(Register dst, Register src) { |
| 3262 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3263 | CpuFeatureScope scope(this, BMI1); |
| 3264 | tzcntq(dst, src); |
| 3265 | return; |
| 3266 | } |
| 3267 | Label not_zero_src; |
| 3268 | bsfq(dst, src); |
| 3269 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3270 | // Define the result of tzcnt(0) separately, because bsf(0) is undefined. |
| 3271 | Set(dst, 64); |
| 3272 | bind(¬_zero_src); |
| 3273 | } |
| 3274 | |
| 3275 | |
| 3276 | void MacroAssembler::Tzcntq(Register dst, const Operand& src) { |
| 3277 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3278 | CpuFeatureScope scope(this, BMI1); |
| 3279 | tzcntq(dst, src); |
| 3280 | return; |
| 3281 | } |
| 3282 | Label not_zero_src; |
| 3283 | bsfq(dst, src); |
| 3284 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3285 | // Define the result of tzcnt(0) separately, because bsf(0) is undefined. |
| 3286 | Set(dst, 64); |
| 3287 | bind(¬_zero_src); |
| 3288 | } |
| 3289 | |
| 3290 | |
| 3291 | void MacroAssembler::Tzcntl(Register dst, Register src) { |
| 3292 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3293 | CpuFeatureScope scope(this, BMI1); |
| 3294 | tzcntl(dst, src); |
| 3295 | return; |
| 3296 | } |
| 3297 | Label not_zero_src; |
| 3298 | bsfl(dst, src); |
| 3299 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3300 | Set(dst, 32); // The result of tzcnt is 32 if src = 0. |
| 3301 | bind(¬_zero_src); |
| 3302 | } |
| 3303 | |
| 3304 | |
| 3305 | void MacroAssembler::Tzcntl(Register dst, const Operand& src) { |
| 3306 | if (CpuFeatures::IsSupported(BMI1)) { |
| 3307 | CpuFeatureScope scope(this, BMI1); |
| 3308 | tzcntl(dst, src); |
| 3309 | return; |
| 3310 | } |
| 3311 | Label not_zero_src; |
| 3312 | bsfl(dst, src); |
| 3313 | j(not_zero, ¬_zero_src, Label::kNear); |
| 3314 | Set(dst, 32); // The result of tzcnt is 32 if src = 0. |
| 3315 | bind(¬_zero_src); |
| 3316 | } |
| 3317 | |
| 3318 | |
| 3319 | void MacroAssembler::Popcntl(Register dst, Register src) { |
| 3320 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3321 | CpuFeatureScope scope(this, POPCNT); |
| 3322 | popcntl(dst, src); |
| 3323 | return; |
| 3324 | } |
| 3325 | UNREACHABLE(); |
| 3326 | } |
| 3327 | |
| 3328 | |
| 3329 | void MacroAssembler::Popcntl(Register dst, const Operand& src) { |
| 3330 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3331 | CpuFeatureScope scope(this, POPCNT); |
| 3332 | popcntl(dst, src); |
| 3333 | return; |
| 3334 | } |
| 3335 | UNREACHABLE(); |
| 3336 | } |
| 3337 | |
| 3338 | |
| 3339 | void MacroAssembler::Popcntq(Register dst, Register src) { |
| 3340 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3341 | CpuFeatureScope scope(this, POPCNT); |
| 3342 | popcntq(dst, src); |
| 3343 | return; |
| 3344 | } |
| 3345 | UNREACHABLE(); |
| 3346 | } |
| 3347 | |
| 3348 | |
| 3349 | void MacroAssembler::Popcntq(Register dst, const Operand& src) { |
| 3350 | if (CpuFeatures::IsSupported(POPCNT)) { |
| 3351 | CpuFeatureScope scope(this, POPCNT); |
| 3352 | popcntq(dst, src); |
| 3353 | return; |
| 3354 | } |
| 3355 | UNREACHABLE(); |
| 3356 | } |
| 3357 | |
| 3358 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3359 | void MacroAssembler::Pushad() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3360 | Push(rax); |
| 3361 | Push(rcx); |
| 3362 | Push(rdx); |
| 3363 | Push(rbx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3364 | // Not pushing rsp or rbp. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3365 | Push(rsi); |
| 3366 | Push(rdi); |
| 3367 | Push(r8); |
| 3368 | Push(r9); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3369 | // r10 is kScratchRegister. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3370 | Push(r11); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3371 | Push(r12); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3372 | // r13 is kRootRegister. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3373 | Push(r14); |
| 3374 | Push(r15); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3375 | STATIC_ASSERT(12 == kNumSafepointSavedRegisters); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3376 | // Use lea for symmetry with Popad. |
| 3377 | int sp_delta = |
| 3378 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3379 | leap(rsp, Operand(rsp, -sp_delta)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3380 | } |
| 3381 | |
| 3382 | |
| 3383 | void MacroAssembler::Popad() { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3384 | // Popad must not change the flags, so use lea instead of addq. |
| 3385 | int sp_delta = |
| 3386 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3387 | leap(rsp, Operand(rsp, sp_delta)); |
| 3388 | Pop(r15); |
| 3389 | Pop(r14); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3390 | Pop(r12); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3391 | Pop(r11); |
| 3392 | Pop(r9); |
| 3393 | Pop(r8); |
| 3394 | Pop(rdi); |
| 3395 | Pop(rsi); |
| 3396 | Pop(rbx); |
| 3397 | Pop(rdx); |
| 3398 | Pop(rcx); |
| 3399 | Pop(rax); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3400 | } |
| 3401 | |
| 3402 | |
| 3403 | void MacroAssembler::Dropad() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3404 | addp(rsp, Immediate(kNumSafepointRegisters * kPointerSize)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3405 | } |
| 3406 | |
| 3407 | |
| 3408 | // Order general registers are pushed by Pushad: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3409 | // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3410 | const int |
| 3411 | MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3412 | 0, |
| 3413 | 1, |
| 3414 | 2, |
| 3415 | 3, |
| 3416 | -1, |
| 3417 | -1, |
| 3418 | 4, |
| 3419 | 5, |
| 3420 | 6, |
| 3421 | 7, |
| 3422 | -1, |
| 3423 | 8, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3424 | 9, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3425 | -1, |
| 3426 | 10, |
| 3427 | 11 |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3428 | }; |
| 3429 | |
| 3430 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3431 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, |
| 3432 | const Immediate& imm) { |
| 3433 | movp(SafepointRegisterSlot(dst), imm); |
| 3434 | } |
| 3435 | |
| 3436 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3437 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3438 | movp(SafepointRegisterSlot(dst), src); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3439 | } |
| 3440 | |
| 3441 | |
| 3442 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3443 | movp(dst, SafepointRegisterSlot(src)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3444 | } |
| 3445 | |
| 3446 | |
| 3447 | Operand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 3448 | return Operand(rsp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 3449 | } |
| 3450 | |
| 3451 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3452 | void MacroAssembler::PushStackHandler() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3453 | // Adjust this code if not the case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3454 | STATIC_ASSERT(StackHandlerConstants::kSize == 1 * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3455 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3456 | |
| 3457 | // Link the current handler as the next handler. |
| 3458 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3459 | Push(ExternalOperand(handler_address)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3460 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3461 | // Set this new handler as the current one. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3462 | movp(ExternalOperand(handler_address), rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3463 | } |
| 3464 | |
| 3465 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3466 | void MacroAssembler::PopStackHandler() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3467 | STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0); |
| 3468 | ExternalReference handler_address(Isolate::kHandlerAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3469 | Pop(ExternalOperand(handler_address)); |
| 3470 | addp(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 3471 | } |
| 3472 | |
| 3473 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3474 | void MacroAssembler::Ret() { |
| 3475 | ret(0); |
| 3476 | } |
| 3477 | |
| 3478 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3479 | void MacroAssembler::Ret(int bytes_dropped, Register scratch) { |
| 3480 | if (is_uint16(bytes_dropped)) { |
| 3481 | ret(bytes_dropped); |
| 3482 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3483 | PopReturnAddressTo(scratch); |
| 3484 | addp(rsp, Immediate(bytes_dropped)); |
| 3485 | PushReturnAddressFrom(scratch); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3486 | ret(0); |
| 3487 | } |
| 3488 | } |
| 3489 | |
| 3490 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3491 | void MacroAssembler::FCmp() { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 3492 | fucomip(); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 3493 | fstp(0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3494 | } |
| 3495 | |
| 3496 | |
| 3497 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 3498 | InstanceType type, |
| 3499 | Register map) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3500 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3501 | CmpInstanceType(map, type); |
| 3502 | } |
| 3503 | |
| 3504 | |
| 3505 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 3506 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 3507 | Immediate(static_cast<int8_t>(type))); |
| 3508 | } |
| 3509 | |
| 3510 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3511 | void MacroAssembler::CheckFastElements(Register map, |
| 3512 | Label* fail, |
| 3513 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3514 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3515 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3516 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3517 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3518 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3519 | Immediate(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3520 | j(above, fail, distance); |
| 3521 | } |
| 3522 | |
| 3523 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3524 | void MacroAssembler::CheckFastObjectElements(Register map, |
| 3525 | Label* fail, |
| 3526 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3527 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3528 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3529 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3530 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3531 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3532 | Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3533 | j(below_equal, fail, distance); |
| 3534 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3535 | Immediate(Map::kMaximumBitField2FastHoleyElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3536 | j(above, fail, distance); |
| 3537 | } |
| 3538 | |
| 3539 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3540 | void MacroAssembler::CheckFastSmiElements(Register map, |
| 3541 | Label* fail, |
| 3542 | Label::Distance distance) { |
| 3543 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3544 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3545 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3546 | Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3547 | j(above, fail, distance); |
| 3548 | } |
| 3549 | |
| 3550 | |
| 3551 | void MacroAssembler::StoreNumberToDoubleElements( |
| 3552 | Register maybe_number, |
| 3553 | Register elements, |
| 3554 | Register index, |
| 3555 | XMMRegister xmm_scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3556 | Label* fail, |
| 3557 | int elements_offset) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3558 | Label smi_value, done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3559 | |
| 3560 | JumpIfSmi(maybe_number, &smi_value, Label::kNear); |
| 3561 | |
| 3562 | CheckMap(maybe_number, |
| 3563 | isolate()->factory()->heap_number_map(), |
| 3564 | fail, |
| 3565 | DONT_DO_SMI_CHECK); |
| 3566 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3567 | // Double value, turn potential sNaN into qNaN. |
| 3568 | Move(xmm_scratch, 1.0); |
| 3569 | mulsd(xmm_scratch, FieldOperand(maybe_number, HeapNumber::kValueOffset)); |
| 3570 | jmp(&done, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3571 | |
| 3572 | bind(&smi_value); |
| 3573 | // Value is a smi. convert to a double and store. |
| 3574 | // Preserve original value. |
| 3575 | SmiToInteger32(kScratchRegister, maybe_number); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3576 | Cvtlsi2sd(xmm_scratch, kScratchRegister); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3577 | bind(&done); |
| 3578 | Movsd(FieldOperand(elements, index, times_8, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3579 | FixedDoubleArray::kHeaderSize - elements_offset), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3580 | xmm_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3581 | } |
| 3582 | |
| 3583 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3584 | void MacroAssembler::CompareMap(Register obj, Handle<Map> map) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3585 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3586 | } |
| 3587 | |
| 3588 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3589 | void MacroAssembler::CheckMap(Register obj, |
| 3590 | Handle<Map> map, |
| 3591 | Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3592 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3593 | if (smi_check_type == DO_SMI_CHECK) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3594 | JumpIfSmi(obj, fail); |
| 3595 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3596 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3597 | CompareMap(obj, map); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 3598 | j(not_equal, fail); |
| 3599 | } |
| 3600 | |
| 3601 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3602 | void MacroAssembler::ClampUint8(Register reg) { |
| 3603 | Label done; |
| 3604 | testl(reg, Immediate(0xFFFFFF00)); |
| 3605 | j(zero, &done, Label::kNear); |
| 3606 | setcc(negative, reg); // 1 if negative, 0 if positive. |
| 3607 | decb(reg); // 0 if negative, 255 if positive. |
| 3608 | bind(&done); |
| 3609 | } |
| 3610 | |
| 3611 | |
| 3612 | void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg, |
| 3613 | XMMRegister temp_xmm_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3614 | Register result_reg) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3615 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3616 | Label conv_failure; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3617 | Xorpd(temp_xmm_reg, temp_xmm_reg); |
| 3618 | Cvtsd2si(result_reg, input_reg); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3619 | testl(result_reg, Immediate(0xFFFFFF00)); |
| 3620 | j(zero, &done, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3621 | cmpl(result_reg, Immediate(1)); |
| 3622 | j(overflow, &conv_failure, Label::kNear); |
| 3623 | movl(result_reg, Immediate(0)); |
| 3624 | setcc(sign, result_reg); |
| 3625 | subl(result_reg, Immediate(1)); |
| 3626 | andl(result_reg, Immediate(255)); |
| 3627 | jmp(&done, Label::kNear); |
| 3628 | bind(&conv_failure); |
| 3629 | Set(result_reg, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3630 | Ucomisd(input_reg, temp_xmm_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3631 | j(below, &done, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3632 | Set(result_reg, 255); |
| 3633 | bind(&done); |
| 3634 | } |
| 3635 | |
| 3636 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3637 | void MacroAssembler::LoadUint32(XMMRegister dst, |
| 3638 | Register src) { |
| 3639 | if (FLAG_debug_code) { |
| 3640 | cmpq(src, Immediate(0xffffffff)); |
| 3641 | Assert(below_equal, kInputGPRIsExpectedToHaveUpper32Cleared); |
| 3642 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3643 | Cvtqsi2sd(dst, src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3644 | } |
| 3645 | |
| 3646 | |
| 3647 | void MacroAssembler::SlowTruncateToI(Register result_reg, |
| 3648 | Register input_reg, |
| 3649 | int offset) { |
| 3650 | DoubleToIStub stub(isolate(), input_reg, result_reg, offset, true); |
| 3651 | call(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 3652 | } |
| 3653 | |
| 3654 | |
| 3655 | void MacroAssembler::TruncateHeapNumberToI(Register result_reg, |
| 3656 | Register input_reg) { |
| 3657 | Label done; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3658 | Movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 3659 | Cvttsd2siq(result_reg, xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3660 | cmpq(result_reg, Immediate(1)); |
| 3661 | j(no_overflow, &done, Label::kNear); |
| 3662 | |
| 3663 | // Slow case. |
| 3664 | if (input_reg.is(result_reg)) { |
| 3665 | subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3666 | Movsd(MemOperand(rsp, 0), xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3667 | SlowTruncateToI(result_reg, rsp, 0); |
| 3668 | addp(rsp, Immediate(kDoubleSize)); |
| 3669 | } else { |
| 3670 | SlowTruncateToI(result_reg, input_reg); |
| 3671 | } |
| 3672 | |
| 3673 | bind(&done); |
| 3674 | // Keep our invariant that the upper 32 bits are zero. |
| 3675 | movl(result_reg, result_reg); |
| 3676 | } |
| 3677 | |
| 3678 | |
| 3679 | void MacroAssembler::TruncateDoubleToI(Register result_reg, |
| 3680 | XMMRegister input_reg) { |
| 3681 | Label done; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3682 | Cvttsd2siq(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3683 | cmpq(result_reg, Immediate(1)); |
| 3684 | j(no_overflow, &done, Label::kNear); |
| 3685 | |
| 3686 | subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3687 | Movsd(MemOperand(rsp, 0), input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3688 | SlowTruncateToI(result_reg, rsp, 0); |
| 3689 | addp(rsp, Immediate(kDoubleSize)); |
| 3690 | |
| 3691 | bind(&done); |
| 3692 | // Keep our invariant that the upper 32 bits are zero. |
| 3693 | movl(result_reg, result_reg); |
| 3694 | } |
| 3695 | |
| 3696 | |
| 3697 | void MacroAssembler::DoubleToI(Register result_reg, XMMRegister input_reg, |
| 3698 | XMMRegister scratch, |
| 3699 | MinusZeroMode minus_zero_mode, |
| 3700 | Label* lost_precision, Label* is_nan, |
| 3701 | Label* minus_zero, Label::Distance dst) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3702 | Cvttsd2si(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3703 | Cvtlsi2sd(xmm0, result_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3704 | Ucomisd(xmm0, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3705 | j(not_equal, lost_precision, dst); |
| 3706 | j(parity_even, is_nan, dst); // NaN. |
| 3707 | if (minus_zero_mode == FAIL_ON_MINUS_ZERO) { |
| 3708 | Label done; |
| 3709 | // The integer converted back is equal to the original. We |
| 3710 | // only have to test if we got -0 as an input. |
| 3711 | testl(result_reg, result_reg); |
| 3712 | j(not_zero, &done, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3713 | Movmskpd(result_reg, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3714 | // Bit 0 contains the sign of the double in input_reg. |
| 3715 | // If input was positive, we are ok and return 0, otherwise |
| 3716 | // jump to minus_zero. |
| 3717 | andl(result_reg, Immediate(1)); |
| 3718 | j(not_zero, minus_zero, dst); |
| 3719 | bind(&done); |
| 3720 | } |
| 3721 | } |
| 3722 | |
| 3723 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3724 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 3725 | Register descriptors) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3726 | movp(descriptors, FieldOperand(map, Map::kDescriptorsOffset)); |
| 3727 | } |
| 3728 | |
| 3729 | |
| 3730 | void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) { |
| 3731 | movl(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 3732 | DecodeField<Map::NumberOfOwnDescriptorsBits>(dst); |
| 3733 | } |
| 3734 | |
| 3735 | |
| 3736 | void MacroAssembler::EnumLength(Register dst, Register map) { |
| 3737 | STATIC_ASSERT(Map::EnumLengthBits::kShift == 0); |
| 3738 | movl(dst, FieldOperand(map, Map::kBitField3Offset)); |
| 3739 | andl(dst, Immediate(Map::EnumLengthBits::kMask)); |
| 3740 | Integer32ToSmi(dst, dst); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3741 | } |
| 3742 | |
| 3743 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3744 | void MacroAssembler::LoadAccessor(Register dst, Register holder, |
| 3745 | int accessor_index, |
| 3746 | AccessorComponent accessor) { |
| 3747 | movp(dst, FieldOperand(holder, HeapObject::kMapOffset)); |
| 3748 | LoadInstanceDescriptors(dst, dst); |
| 3749 | movp(dst, FieldOperand(dst, DescriptorArray::GetValueOffset(accessor_index))); |
| 3750 | int offset = accessor == ACCESSOR_GETTER ? AccessorPair::kGetterOffset |
| 3751 | : AccessorPair::kSetterOffset; |
| 3752 | movp(dst, FieldOperand(dst, offset)); |
| 3753 | } |
| 3754 | |
| 3755 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3756 | void MacroAssembler::DispatchWeakMap(Register obj, Register scratch1, |
| 3757 | Register scratch2, Handle<WeakCell> cell, |
| 3758 | Handle<Code> success, |
| 3759 | SmiCheckType smi_check_type) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3760 | Label fail; |
| 3761 | if (smi_check_type == DO_SMI_CHECK) { |
| 3762 | JumpIfSmi(obj, &fail); |
| 3763 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3764 | movq(scratch1, FieldOperand(obj, HeapObject::kMapOffset)); |
| 3765 | CmpWeakValue(scratch1, cell, scratch2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3766 | j(equal, success, RelocInfo::CODE_TARGET); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3767 | bind(&fail); |
| 3768 | } |
| 3769 | |
| 3770 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3771 | void MacroAssembler::AssertNumber(Register object) { |
| 3772 | if (emit_debug_code()) { |
| 3773 | Label ok; |
| 3774 | Condition is_smi = CheckSmi(object); |
| 3775 | j(is_smi, &ok, Label::kNear); |
| 3776 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
| 3777 | isolate()->factory()->heap_number_map()); |
| 3778 | Check(equal, kOperandIsNotANumber); |
| 3779 | bind(&ok); |
| 3780 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 3781 | } |
| 3782 | |
| 3783 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3784 | void MacroAssembler::AssertNotSmi(Register object) { |
| 3785 | if (emit_debug_code()) { |
| 3786 | Condition is_smi = CheckSmi(object); |
| 3787 | Check(NegateCondition(is_smi), kOperandIsASmi); |
| 3788 | } |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 3789 | } |
| 3790 | |
| 3791 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3792 | void MacroAssembler::AssertSmi(Register object) { |
| 3793 | if (emit_debug_code()) { |
| 3794 | Condition is_smi = CheckSmi(object); |
| 3795 | Check(is_smi, kOperandIsNotASmi); |
| 3796 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3797 | } |
| 3798 | |
| 3799 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3800 | void MacroAssembler::AssertSmi(const Operand& object) { |
| 3801 | if (emit_debug_code()) { |
| 3802 | Condition is_smi = CheckSmi(object); |
| 3803 | Check(is_smi, kOperandIsNotASmi); |
| 3804 | } |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 3805 | } |
| 3806 | |
| 3807 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3808 | void MacroAssembler::AssertZeroExtended(Register int32_register) { |
| 3809 | if (emit_debug_code()) { |
| 3810 | DCHECK(!int32_register.is(kScratchRegister)); |
| 3811 | movq(kScratchRegister, V8_INT64_C(0x0000000100000000)); |
| 3812 | cmpq(kScratchRegister, int32_register); |
| 3813 | Check(above_equal, k32BitValueInRegisterIsNotZeroExtended); |
| 3814 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3815 | } |
| 3816 | |
| 3817 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3818 | void MacroAssembler::AssertString(Register object) { |
| 3819 | if (emit_debug_code()) { |
| 3820 | testb(object, Immediate(kSmiTagMask)); |
| 3821 | Check(not_equal, kOperandIsASmiAndNotAString); |
| 3822 | Push(object); |
| 3823 | movp(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 3824 | CmpInstanceType(object, FIRST_NONSTRING_TYPE); |
| 3825 | Pop(object); |
| 3826 | Check(below, kOperandIsNotAString); |
| 3827 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3828 | } |
| 3829 | |
| 3830 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3831 | void MacroAssembler::AssertName(Register object) { |
| 3832 | if (emit_debug_code()) { |
| 3833 | testb(object, Immediate(kSmiTagMask)); |
| 3834 | Check(not_equal, kOperandIsASmiAndNotAName); |
| 3835 | Push(object); |
| 3836 | movp(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 3837 | CmpInstanceType(object, LAST_NAME_TYPE); |
| 3838 | Pop(object); |
| 3839 | Check(below_equal, kOperandIsNotAName); |
| 3840 | } |
| 3841 | } |
| 3842 | |
| 3843 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3844 | void MacroAssembler::AssertFunction(Register object) { |
| 3845 | if (emit_debug_code()) { |
| 3846 | testb(object, Immediate(kSmiTagMask)); |
| 3847 | Check(not_equal, kOperandIsASmiAndNotAFunction); |
| 3848 | Push(object); |
| 3849 | CmpObjectType(object, JS_FUNCTION_TYPE, object); |
| 3850 | Pop(object); |
| 3851 | Check(equal, kOperandIsNotAFunction); |
| 3852 | } |
| 3853 | } |
| 3854 | |
| 3855 | |
| 3856 | void MacroAssembler::AssertBoundFunction(Register object) { |
| 3857 | if (emit_debug_code()) { |
| 3858 | testb(object, Immediate(kSmiTagMask)); |
| 3859 | Check(not_equal, kOperandIsASmiAndNotABoundFunction); |
| 3860 | Push(object); |
| 3861 | CmpObjectType(object, JS_BOUND_FUNCTION_TYPE, object); |
| 3862 | Pop(object); |
| 3863 | Check(equal, kOperandIsNotABoundFunction); |
| 3864 | } |
| 3865 | } |
| 3866 | |
| 3867 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3868 | void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) { |
| 3869 | if (emit_debug_code()) { |
| 3870 | Label done_checking; |
| 3871 | AssertNotSmi(object); |
| 3872 | Cmp(object, isolate()->factory()->undefined_value()); |
| 3873 | j(equal, &done_checking); |
| 3874 | Cmp(FieldOperand(object, 0), isolate()->factory()->allocation_site_map()); |
| 3875 | Assert(equal, kExpectedUndefinedOrCell); |
| 3876 | bind(&done_checking); |
| 3877 | } |
| 3878 | } |
| 3879 | |
| 3880 | |
| 3881 | void MacroAssembler::AssertRootValue(Register src, |
| 3882 | Heap::RootListIndex root_value_index, |
| 3883 | BailoutReason reason) { |
| 3884 | if (emit_debug_code()) { |
| 3885 | DCHECK(!src.is(kScratchRegister)); |
| 3886 | LoadRoot(kScratchRegister, root_value_index); |
| 3887 | cmpp(src, kScratchRegister); |
| 3888 | Check(equal, reason); |
| 3889 | } |
Kristian Monsen | 9dcf7e2 | 2010-06-28 14:14:28 +0100 | [diff] [blame] | 3890 | } |
| 3891 | |
| 3892 | |
| 3893 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 3894 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 3895 | Register map, |
| 3896 | Register instance_type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3897 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 3898 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3899 | STATIC_ASSERT(kNotStringTag != 0); |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 3900 | testb(instance_type, Immediate(kIsNotStringMask)); |
| 3901 | return zero; |
| 3902 | } |
| 3903 | |
| 3904 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3905 | Condition MacroAssembler::IsObjectNameType(Register heap_object, |
| 3906 | Register map, |
| 3907 | Register instance_type) { |
| 3908 | movp(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 3909 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 3910 | cmpb(instance_type, Immediate(static_cast<uint8_t>(LAST_NAME_TYPE))); |
| 3911 | return below_equal; |
| 3912 | } |
| 3913 | |
| 3914 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3915 | void MacroAssembler::GetMapConstructor(Register result, Register map, |
| 3916 | Register temp) { |
| 3917 | Label done, loop; |
| 3918 | movp(result, FieldOperand(map, Map::kConstructorOrBackPointerOffset)); |
| 3919 | bind(&loop); |
| 3920 | JumpIfSmi(result, &done, Label::kNear); |
| 3921 | CmpObjectType(result, MAP_TYPE, temp); |
| 3922 | j(not_equal, &done, Label::kNear); |
| 3923 | movp(result, FieldOperand(result, Map::kConstructorOrBackPointerOffset)); |
| 3924 | jmp(&loop); |
| 3925 | bind(&done); |
| 3926 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3927 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3928 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3929 | void MacroAssembler::TryGetFunctionPrototype(Register function, Register result, |
| 3930 | Label* miss) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3931 | // Get the prototype or initial map from the function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3932 | movp(result, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3933 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 3934 | |
| 3935 | // If the prototype or initial map is the hole, don't return it and |
| 3936 | // simply miss the cache instead. This will allow us to allocate a |
| 3937 | // prototype object on-demand in the runtime system. |
| 3938 | CompareRoot(result, Heap::kTheHoleValueRootIndex); |
| 3939 | j(equal, miss); |
| 3940 | |
| 3941 | // If the function does not have an initial map, we're done. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3942 | Label done; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3943 | CmpObjectType(result, MAP_TYPE, kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3944 | j(not_equal, &done, Label::kNear); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3945 | |
| 3946 | // Get the prototype from the initial map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3947 | movp(result, FieldOperand(result, Map::kPrototypeOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3948 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3949 | // All done. |
| 3950 | bind(&done); |
| 3951 | } |
| 3952 | |
| 3953 | |
| 3954 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 3955 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3956 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 3957 | movl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3958 | } |
| 3959 | } |
| 3960 | |
| 3961 | |
| 3962 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3963 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3964 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3965 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3966 | if (value == 1) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3967 | incl(counter_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3968 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3969 | addl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3970 | } |
| 3971 | } |
| 3972 | } |
| 3973 | |
| 3974 | |
| 3975 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3976 | DCHECK(value > 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3977 | if (FLAG_native_code_counters && counter->Enabled()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3978 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3979 | if (value == 1) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3980 | decl(counter_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3981 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3982 | subl(counter_operand, Immediate(value)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3983 | } |
| 3984 | } |
| 3985 | } |
| 3986 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3987 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 3988 | void MacroAssembler::DebugBreak() { |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3989 | Set(rax, 0); // No arguments. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3990 | LoadAddress(rbx, |
| 3991 | ExternalReference(Runtime::kHandleDebuggerStatement, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3992 | CEntryStub ces(isolate(), 1); |
| 3993 | DCHECK(AllowThisStubCall(&ces)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3994 | Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 3995 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3996 | |
| 3997 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3998 | void MacroAssembler::InvokeFunction(Register function, |
| 3999 | Register new_target, |
| 4000 | const ParameterCount& actual, |
| 4001 | InvokeFlag flag, |
| 4002 | const CallWrapper& call_wrapper) { |
| 4003 | movp(rbx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 4004 | LoadSharedFunctionInfoSpecialField( |
| 4005 | rbx, rbx, SharedFunctionInfo::kFormalParameterCountOffset); |
| 4006 | |
| 4007 | ParameterCount expected(rbx); |
| 4008 | InvokeFunction(function, new_target, expected, actual, flag, call_wrapper); |
| 4009 | } |
| 4010 | |
| 4011 | |
| 4012 | void MacroAssembler::InvokeFunction(Handle<JSFunction> function, |
| 4013 | const ParameterCount& expected, |
| 4014 | const ParameterCount& actual, |
| 4015 | InvokeFlag flag, |
| 4016 | const CallWrapper& call_wrapper) { |
| 4017 | Move(rdi, function); |
| 4018 | InvokeFunction(rdi, no_reg, expected, actual, flag, call_wrapper); |
| 4019 | } |
| 4020 | |
| 4021 | |
| 4022 | void MacroAssembler::InvokeFunction(Register function, |
| 4023 | Register new_target, |
| 4024 | const ParameterCount& expected, |
| 4025 | const ParameterCount& actual, |
| 4026 | InvokeFlag flag, |
| 4027 | const CallWrapper& call_wrapper) { |
| 4028 | DCHECK(function.is(rdi)); |
| 4029 | movp(rsi, FieldOperand(function, JSFunction::kContextOffset)); |
| 4030 | InvokeFunctionCode(rdi, new_target, expected, actual, flag, call_wrapper); |
| 4031 | } |
| 4032 | |
| 4033 | |
| 4034 | void MacroAssembler::InvokeFunctionCode(Register function, Register new_target, |
| 4035 | const ParameterCount& expected, |
| 4036 | const ParameterCount& actual, |
| 4037 | InvokeFlag flag, |
| 4038 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4039 | // You can't call a function without a valid frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4040 | DCHECK(flag == JUMP_FUNCTION || has_frame()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4041 | DCHECK(function.is(rdi)); |
| 4042 | DCHECK_IMPLIES(new_target.is_valid(), new_target.is(rdx)); |
| 4043 | |
| 4044 | if (call_wrapper.NeedsDebugStepCheck()) { |
| 4045 | FloodFunctionIfStepping(function, new_target, expected, actual); |
| 4046 | } |
| 4047 | |
| 4048 | // Clear the new.target register if not given. |
| 4049 | if (!new_target.is_valid()) { |
| 4050 | LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
| 4051 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4052 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4053 | Label done; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4054 | bool definitely_mismatches = false; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4055 | InvokePrologue(expected, |
| 4056 | actual, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4057 | &done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4058 | &definitely_mismatches, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4059 | flag, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4060 | Label::kNear, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4061 | call_wrapper); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4062 | if (!definitely_mismatches) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4063 | // We call indirectly through the code field in the function to |
| 4064 | // allow recompilation to take effect without changing any of the |
| 4065 | // call sites. |
| 4066 | Operand code = FieldOperand(function, JSFunction::kCodeEntryOffset); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4067 | if (flag == CALL_FUNCTION) { |
| 4068 | call_wrapper.BeforeCall(CallSize(code)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4069 | call(code); |
| 4070 | call_wrapper.AfterCall(); |
| 4071 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4072 | DCHECK(flag == JUMP_FUNCTION); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4073 | jmp(code); |
| 4074 | } |
| 4075 | bind(&done); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4076 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4077 | } |
| 4078 | |
| 4079 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4080 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 4081 | const ParameterCount& actual, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4082 | Label* done, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4083 | bool* definitely_mismatches, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4084 | InvokeFlag flag, |
| 4085 | Label::Distance near_jump, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4086 | const CallWrapper& call_wrapper) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4087 | bool definitely_matches = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4088 | *definitely_mismatches = false; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4089 | Label invoke; |
| 4090 | if (expected.is_immediate()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4091 | DCHECK(actual.is_immediate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4092 | Set(rax, actual.immediate()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4093 | if (expected.immediate() == actual.immediate()) { |
| 4094 | definitely_matches = true; |
| 4095 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4096 | if (expected.immediate() == |
| 4097 | SharedFunctionInfo::kDontAdaptArgumentsSentinel) { |
| 4098 | // Don't worry about adapting arguments for built-ins that |
| 4099 | // don't want that done. Skip adaption code by making it look |
| 4100 | // like we have a match between expected and actual number of |
| 4101 | // arguments. |
| 4102 | definitely_matches = true; |
| 4103 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4104 | *definitely_mismatches = true; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4105 | Set(rbx, expected.immediate()); |
| 4106 | } |
| 4107 | } |
| 4108 | } else { |
| 4109 | if (actual.is_immediate()) { |
| 4110 | // Expected is in register, actual is immediate. This is the |
| 4111 | // case when we invoke function values without going through the |
| 4112 | // IC mechanism. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4113 | Set(rax, actual.immediate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4114 | cmpp(expected.reg(), Immediate(actual.immediate())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4115 | j(equal, &invoke, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4116 | DCHECK(expected.reg().is(rbx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4117 | } else if (!expected.reg().is(actual.reg())) { |
| 4118 | // Both expected and actual are in (different) registers. This |
| 4119 | // is the case when we invoke functions using call and apply. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4120 | cmpp(expected.reg(), actual.reg()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4121 | j(equal, &invoke, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4122 | DCHECK(actual.reg().is(rax)); |
| 4123 | DCHECK(expected.reg().is(rbx)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4124 | } else { |
| 4125 | Move(rax, actual.reg()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4126 | } |
| 4127 | } |
| 4128 | |
| 4129 | if (!definitely_matches) { |
| 4130 | Handle<Code> adaptor = isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4131 | if (flag == CALL_FUNCTION) { |
| 4132 | call_wrapper.BeforeCall(CallSize(adaptor)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4133 | Call(adaptor, RelocInfo::CODE_TARGET); |
| 4134 | call_wrapper.AfterCall(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4135 | if (!*definitely_mismatches) { |
| 4136 | jmp(done, near_jump); |
| 4137 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4138 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4139 | Jump(adaptor, RelocInfo::CODE_TARGET); |
| 4140 | } |
| 4141 | bind(&invoke); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4142 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 4143 | } |
| 4144 | |
| 4145 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4146 | void MacroAssembler::FloodFunctionIfStepping(Register fun, Register new_target, |
| 4147 | const ParameterCount& expected, |
| 4148 | const ParameterCount& actual) { |
| 4149 | Label skip_flooding; |
| 4150 | ExternalReference step_in_enabled = |
| 4151 | ExternalReference::debug_step_in_enabled_address(isolate()); |
| 4152 | Operand step_in_enabled_operand = ExternalOperand(step_in_enabled); |
| 4153 | cmpb(step_in_enabled_operand, Immediate(0)); |
| 4154 | j(equal, &skip_flooding); |
| 4155 | { |
| 4156 | FrameScope frame(this, |
| 4157 | has_frame() ? StackFrame::NONE : StackFrame::INTERNAL); |
| 4158 | if (expected.is_reg()) { |
| 4159 | Integer32ToSmi(expected.reg(), expected.reg()); |
| 4160 | Push(expected.reg()); |
| 4161 | } |
| 4162 | if (actual.is_reg()) { |
| 4163 | Integer32ToSmi(actual.reg(), actual.reg()); |
| 4164 | Push(actual.reg()); |
| 4165 | } |
| 4166 | if (new_target.is_valid()) { |
| 4167 | Push(new_target); |
| 4168 | } |
| 4169 | Push(fun); |
| 4170 | Push(fun); |
| 4171 | CallRuntime(Runtime::kDebugPrepareStepInIfStepping, 1); |
| 4172 | Pop(fun); |
| 4173 | if (new_target.is_valid()) { |
| 4174 | Pop(new_target); |
| 4175 | } |
| 4176 | if (actual.is_reg()) { |
| 4177 | Pop(actual.reg()); |
| 4178 | SmiToInteger64(actual.reg(), actual.reg()); |
| 4179 | } |
| 4180 | if (expected.is_reg()) { |
| 4181 | Pop(expected.reg()); |
| 4182 | SmiToInteger64(expected.reg(), expected.reg()); |
| 4183 | } |
| 4184 | } |
| 4185 | bind(&skip_flooding); |
| 4186 | } |
| 4187 | |
| 4188 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4189 | void MacroAssembler::StubPrologue() { |
| 4190 | pushq(rbp); // Caller's frame pointer. |
| 4191 | movp(rbp, rsp); |
| 4192 | Push(rsi); // Callee's context. |
| 4193 | Push(Smi::FromInt(StackFrame::STUB)); |
| 4194 | } |
| 4195 | |
| 4196 | |
| 4197 | void MacroAssembler::Prologue(bool code_pre_aging) { |
| 4198 | PredictableCodeSizeScope predictible_code_size_scope(this, |
| 4199 | kNoCodeAgeSequenceLength); |
| 4200 | if (code_pre_aging) { |
| 4201 | // Pre-age the code. |
| 4202 | Call(isolate()->builtins()->MarkCodeAsExecutedOnce(), |
| 4203 | RelocInfo::CODE_AGE_SEQUENCE); |
| 4204 | Nop(kNoCodeAgeSequenceLength - Assembler::kShortCallInstructionLength); |
| 4205 | } else { |
| 4206 | pushq(rbp); // Caller's frame pointer. |
| 4207 | movp(rbp, rsp); |
| 4208 | Push(rsi); // Callee's context. |
| 4209 | Push(rdi); // Callee's JS function. |
| 4210 | } |
| 4211 | } |
| 4212 | |
| 4213 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4214 | void MacroAssembler::EmitLoadTypeFeedbackVector(Register vector) { |
| 4215 | movp(vector, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
| 4216 | movp(vector, FieldOperand(vector, JSFunction::kSharedFunctionInfoOffset)); |
| 4217 | movp(vector, FieldOperand(vector, SharedFunctionInfo::kFeedbackVectorOffset)); |
| 4218 | } |
| 4219 | |
| 4220 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4221 | void MacroAssembler::EnterFrame(StackFrame::Type type, |
| 4222 | bool load_constant_pool_pointer_reg) { |
| 4223 | // Out-of-line constant pool not implemented on x64. |
| 4224 | UNREACHABLE(); |
| 4225 | } |
| 4226 | |
| 4227 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4228 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4229 | pushq(rbp); |
| 4230 | movp(rbp, rsp); |
| 4231 | Push(rsi); // Context. |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4232 | Push(Smi::FromInt(type)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4233 | Move(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 4234 | Push(kScratchRegister); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4235 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4236 | Move(kScratchRegister, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4237 | isolate()->factory()->undefined_value(), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4238 | RelocInfo::EMBEDDED_OBJECT); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4239 | cmpp(Operand(rsp, 0), kScratchRegister); |
| 4240 | Check(not_equal, kCodeObjectNotProperlyPatched); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4241 | } |
| 4242 | } |
| 4243 | |
| 4244 | |
| 4245 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4246 | if (emit_debug_code()) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4247 | Move(kScratchRegister, Smi::FromInt(type)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4248 | cmpp(Operand(rbp, StandardFrameConstants::kMarkerOffset), kScratchRegister); |
| 4249 | Check(equal, kStackFrameTypesMustMatch); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4250 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4251 | movp(rsp, rbp); |
| 4252 | popq(rbp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4253 | } |
| 4254 | |
| 4255 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4256 | void MacroAssembler::EnterExitFramePrologue(bool save_rax) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4257 | // Set up the frame structure on the stack. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4258 | // All constants are relative to the frame pointer of the exit frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4259 | DCHECK(ExitFrameConstants::kCallerSPDisplacement == |
| 4260 | kFPOnStackSize + kPCOnStackSize); |
| 4261 | DCHECK(ExitFrameConstants::kCallerPCOffset == kFPOnStackSize); |
| 4262 | DCHECK(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize); |
| 4263 | pushq(rbp); |
| 4264 | movp(rbp, rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4265 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4266 | // Reserve room for entry stack pointer and push the code object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4267 | DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
| 4268 | Push(Immediate(0)); // Saved entry sp, patched before call. |
| 4269 | Move(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 4270 | Push(kScratchRegister); // Accessed from EditFrame::code_slot. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4271 | |
| 4272 | // Save the frame pointer and the context in top. |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4273 | if (save_rax) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4274 | movp(r14, rax); // Backup rax in callee-save register. |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4275 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4276 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4277 | Store(ExternalReference(Isolate::kCEntryFPAddress, isolate()), rbp); |
| 4278 | Store(ExternalReference(Isolate::kContextAddress, isolate()), rsi); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4279 | Store(ExternalReference(Isolate::kCFunctionAddress, isolate()), rbx); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4280 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4281 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4282 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4283 | void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, |
| 4284 | bool save_doubles) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4285 | #ifdef _WIN64 |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4286 | const int kShadowSpace = 4; |
| 4287 | arg_stack_space += kShadowSpace; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4288 | #endif |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4289 | // Optionally save all XMM registers. |
| 4290 | if (save_doubles) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4291 | int space = XMMRegister::kMaxNumRegisters * kDoubleSize + |
| 4292 | arg_stack_space * kRegisterSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4293 | subp(rsp, Immediate(space)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4294 | int offset = -2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4295 | const RegisterConfiguration* config = |
| 4296 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
| 4297 | for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { |
| 4298 | DoubleRegister reg = |
| 4299 | DoubleRegister::from_code(config->GetAllocatableDoubleCode(i)); |
| 4300 | Movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4301 | } |
| 4302 | } else if (arg_stack_space > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4303 | subp(rsp, Immediate(arg_stack_space * kRegisterSize)); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4304 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4305 | |
| 4306 | // Get the required frame alignment for the OS. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4307 | const int kFrameAlignment = base::OS::ActivationFrameAlignment(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4308 | if (kFrameAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4309 | DCHECK(base::bits::IsPowerOfTwo32(kFrameAlignment)); |
| 4310 | DCHECK(is_int8(kFrameAlignment)); |
| 4311 | andp(rsp, Immediate(-kFrameAlignment)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4312 | } |
| 4313 | |
| 4314 | // Patch the saved entry sp. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4315 | movp(Operand(rbp, ExitFrameConstants::kSPOffset), rsp); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4316 | } |
| 4317 | |
| 4318 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4319 | void MacroAssembler::EnterExitFrame(int arg_stack_space, bool save_doubles) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4320 | EnterExitFramePrologue(true); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4321 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4322 | // 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] | 4323 | // so it must be retained across the C-call. |
| 4324 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4325 | leap(r15, Operand(rbp, r14, times_pointer_size, offset)); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4326 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4327 | EnterExitFrameEpilogue(arg_stack_space, save_doubles); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4328 | } |
| 4329 | |
| 4330 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4331 | void MacroAssembler::EnterApiExitFrame(int arg_stack_space) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4332 | EnterExitFramePrologue(false); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4333 | EnterExitFrameEpilogue(arg_stack_space, false); |
Ben Murdoch | bb769b2 | 2010-08-11 14:56:33 +0100 | [diff] [blame] | 4334 | } |
| 4335 | |
| 4336 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4337 | void MacroAssembler::LeaveExitFrame(bool save_doubles, bool pop_arguments) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4338 | // Registers: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4339 | // r15 : argv |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4340 | if (save_doubles) { |
| 4341 | int offset = -2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4342 | const RegisterConfiguration* config = |
| 4343 | RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT); |
| 4344 | for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { |
| 4345 | DoubleRegister reg = |
| 4346 | DoubleRegister::from_code(config->GetAllocatableDoubleCode(i)); |
| 4347 | Movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize))); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4348 | } |
| 4349 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4350 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4351 | if (pop_arguments) { |
| 4352 | // Get the return address from the stack and restore the frame pointer. |
| 4353 | movp(rcx, Operand(rbp, kFPOnStackSize)); |
| 4354 | movp(rbp, Operand(rbp, 0 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4355 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4356 | // Drop everything up to and including the arguments and the receiver |
| 4357 | // from the caller stack. |
| 4358 | leap(rsp, Operand(r15, 1 * kPointerSize)); |
| 4359 | |
| 4360 | PushReturnAddressFrom(rcx); |
| 4361 | } else { |
| 4362 | // Otherwise just leave the exit frame. |
| 4363 | leave(); |
| 4364 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4365 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4366 | LeaveExitFrameEpilogue(true); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4367 | } |
| 4368 | |
| 4369 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4370 | void MacroAssembler::LeaveApiExitFrame(bool restore_context) { |
| 4371 | movp(rsp, rbp); |
| 4372 | popq(rbp); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4373 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4374 | LeaveExitFrameEpilogue(restore_context); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4375 | } |
| 4376 | |
| 4377 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4378 | void MacroAssembler::LeaveExitFrameEpilogue(bool restore_context) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4379 | // Restore current context from top and clear it in debug mode. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4380 | ExternalReference context_address(Isolate::kContextAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4381 | Operand context_operand = ExternalOperand(context_address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4382 | if (restore_context) { |
| 4383 | movp(rsi, context_operand); |
| 4384 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4385 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4386 | movp(context_operand, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4387 | #endif |
| 4388 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4389 | // Clear the top frame. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4390 | ExternalReference c_entry_fp_address(Isolate::kCEntryFPAddress, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4391 | isolate()); |
| 4392 | Operand c_entry_fp_operand = ExternalOperand(c_entry_fp_address); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4393 | movp(c_entry_fp_operand, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4394 | } |
| 4395 | |
| 4396 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4397 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 4398 | Register scratch, |
| 4399 | Label* miss) { |
| 4400 | Label same_contexts; |
| 4401 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4402 | DCHECK(!holder_reg.is(scratch)); |
| 4403 | DCHECK(!scratch.is(kScratchRegister)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4404 | // Load current lexical context from the stack frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4405 | movp(scratch, Operand(rbp, StandardFrameConstants::kContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4406 | |
| 4407 | // When generating debug code, make sure the lexical context is set. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4408 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4409 | cmpp(scratch, Immediate(0)); |
| 4410 | Check(not_equal, kWeShouldNotHaveAnEmptyLexicalContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4411 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4412 | // Load the native context of the current context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4413 | movp(scratch, ContextOperand(scratch, Context::NATIVE_CONTEXT_INDEX)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4414 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4415 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4416 | if (emit_debug_code()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4417 | Cmp(FieldOperand(scratch, HeapObject::kMapOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4418 | isolate()->factory()->native_context_map()); |
| 4419 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4420 | } |
| 4421 | |
| 4422 | // Check if both contexts are the same. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4423 | cmpp(scratch, FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4424 | j(equal, &same_contexts); |
| 4425 | |
| 4426 | // Compare security tokens. |
| 4427 | // Check that the security token in the calling global object is |
| 4428 | // compatible with the security token in the receiving global |
| 4429 | // object. |
| 4430 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4431 | // Check the context is a native context. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4432 | if (emit_debug_code()) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4433 | // Preserve original value of holder_reg. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4434 | Push(holder_reg); |
| 4435 | movp(holder_reg, |
| 4436 | FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4437 | CompareRoot(holder_reg, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4438 | Check(not_equal, kJSGlobalProxyContextShouldNotBeNull); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4439 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4440 | // Read the first word and compare to native_context_map(), |
| 4441 | movp(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset)); |
| 4442 | CompareRoot(holder_reg, Heap::kNativeContextMapRootIndex); |
| 4443 | Check(equal, kJSGlobalObjectNativeContextShouldBeANativeContext); |
| 4444 | Pop(holder_reg); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4445 | } |
| 4446 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4447 | movp(kScratchRegister, |
| 4448 | FieldOperand(holder_reg, JSGlobalProxy::kNativeContextOffset)); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4449 | int token_offset = |
| 4450 | Context::kHeaderSize + Context::SECURITY_TOKEN_INDEX * kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4451 | movp(scratch, FieldOperand(scratch, token_offset)); |
| 4452 | cmpp(scratch, FieldOperand(kScratchRegister, token_offset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4453 | j(not_equal, miss); |
| 4454 | |
| 4455 | bind(&same_contexts); |
| 4456 | } |
| 4457 | |
| 4458 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4459 | // Compute the hash code from the untagged key. This must be kept in sync with |
| 4460 | // ComputeIntegerHash in utils.h and KeyedLoadGenericStub in |
| 4461 | // code-stub-hydrogen.cc |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4462 | void MacroAssembler::GetNumberHash(Register r0, Register scratch) { |
| 4463 | // First of all we assign the hash seed to scratch. |
| 4464 | LoadRoot(scratch, Heap::kHashSeedRootIndex); |
| 4465 | SmiToInteger32(scratch, scratch); |
| 4466 | |
| 4467 | // Xor original key with a seed. |
| 4468 | xorl(r0, scratch); |
| 4469 | |
| 4470 | // Compute the hash code from the untagged key. This must be kept in sync |
| 4471 | // with ComputeIntegerHash in utils.h. |
| 4472 | // |
| 4473 | // hash = ~hash + (hash << 15); |
| 4474 | movl(scratch, r0); |
| 4475 | notl(r0); |
| 4476 | shll(scratch, Immediate(15)); |
| 4477 | addl(r0, scratch); |
| 4478 | // hash = hash ^ (hash >> 12); |
| 4479 | movl(scratch, r0); |
| 4480 | shrl(scratch, Immediate(12)); |
| 4481 | xorl(r0, scratch); |
| 4482 | // hash = hash + (hash << 2); |
| 4483 | leal(r0, Operand(r0, r0, times_4, 0)); |
| 4484 | // hash = hash ^ (hash >> 4); |
| 4485 | movl(scratch, r0); |
| 4486 | shrl(scratch, Immediate(4)); |
| 4487 | xorl(r0, scratch); |
| 4488 | // hash = hash * 2057; |
| 4489 | imull(r0, r0, Immediate(2057)); |
| 4490 | // hash = hash ^ (hash >> 16); |
| 4491 | movl(scratch, r0); |
| 4492 | shrl(scratch, Immediate(16)); |
| 4493 | xorl(r0, scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4494 | andl(r0, Immediate(0x3fffffff)); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4495 | } |
| 4496 | |
| 4497 | |
| 4498 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4499 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 4500 | Register elements, |
| 4501 | Register key, |
| 4502 | Register r0, |
| 4503 | Register r1, |
| 4504 | Register r2, |
| 4505 | Register result) { |
| 4506 | // Register use: |
| 4507 | // |
| 4508 | // elements - holds the slow-case elements of the receiver on entry. |
| 4509 | // Unchanged unless 'result' is the same register. |
| 4510 | // |
| 4511 | // key - holds the smi key on entry. |
| 4512 | // Unchanged unless 'result' is the same register. |
| 4513 | // |
| 4514 | // Scratch registers: |
| 4515 | // |
| 4516 | // r0 - holds the untagged key on entry and holds the hash once computed. |
| 4517 | // |
| 4518 | // r1 - used to hold the capacity mask of the dictionary |
| 4519 | // |
| 4520 | // r2 - used for the index into the dictionary. |
| 4521 | // |
| 4522 | // result - holds the result on exit if the load succeeded. |
| 4523 | // Allowed to be the same as 'key' or 'result'. |
| 4524 | // Unchanged on bailout so 'key' or 'result' can be used |
| 4525 | // in further computation. |
| 4526 | |
| 4527 | Label done; |
| 4528 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4529 | GetNumberHash(r0, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4530 | |
| 4531 | // Compute capacity mask. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4532 | SmiToInteger32(r1, FieldOperand(elements, |
| 4533 | SeededNumberDictionary::kCapacityOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4534 | decl(r1); |
| 4535 | |
| 4536 | // Generate an unrolled loop that performs a few probes before giving up. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4537 | for (int i = 0; i < kNumberDictionaryProbes; i++) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4538 | // Use r2 for index calculations and keep the hash intact in r0. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4539 | movp(r2, r0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4540 | // Compute the masked index: (hash + i + i * i) & mask. |
| 4541 | if (i > 0) { |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4542 | addl(r2, Immediate(SeededNumberDictionary::GetProbeOffset(i))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4543 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4544 | andp(r2, r1); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4545 | |
| 4546 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4547 | DCHECK(SeededNumberDictionary::kEntrySize == 3); |
| 4548 | leap(r2, Operand(r2, r2, times_2, 0)); // r2 = r2 * 3 |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4549 | |
| 4550 | // Check if the key matches. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4551 | cmpp(key, FieldOperand(elements, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4552 | r2, |
| 4553 | times_pointer_size, |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4554 | SeededNumberDictionary::kElementsStartOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4555 | if (i != (kNumberDictionaryProbes - 1)) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4556 | j(equal, &done); |
| 4557 | } else { |
| 4558 | j(not_equal, miss); |
| 4559 | } |
| 4560 | } |
| 4561 | |
| 4562 | bind(&done); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 4563 | // Check that the value is a field property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4564 | const int kDetailsOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4565 | SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4566 | DCHECK_EQ(DATA, 0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4567 | Test(FieldOperand(elements, r2, times_pointer_size, kDetailsOffset), |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4568 | Smi::FromInt(PropertyDetails::TypeField::kMask)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4569 | j(not_zero, miss); |
| 4570 | |
| 4571 | // Get the value at the masked, scaled index. |
| 4572 | const int kValueOffset = |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 4573 | SeededNumberDictionary::kElementsStartOffset + kPointerSize; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4574 | movp(result, FieldOperand(elements, r2, times_pointer_size, kValueOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4575 | } |
| 4576 | |
| 4577 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4578 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4579 | Register scratch, |
| 4580 | AllocationFlags flags) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4581 | ExternalReference allocation_top = |
| 4582 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4583 | |
| 4584 | // Just return if allocation top is already known. |
| 4585 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
| 4586 | // No use of scratch if allocation top is provided. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4587 | DCHECK(!scratch.is_valid()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4588 | #ifdef DEBUG |
| 4589 | // Assert that result actually contains top on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4590 | Operand top_operand = ExternalOperand(allocation_top); |
| 4591 | cmpp(result, top_operand); |
| 4592 | Check(equal, kUnexpectedAllocationTop); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4593 | #endif |
| 4594 | return; |
| 4595 | } |
| 4596 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4597 | // Move address of new object to result. Use scratch register if available, |
| 4598 | // and keep address in scratch until call to UpdateAllocationTopHelper. |
| 4599 | if (scratch.is_valid()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4600 | LoadAddress(scratch, allocation_top); |
| 4601 | movp(result, Operand(scratch, 0)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4602 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4603 | Load(result, allocation_top); |
| 4604 | } |
| 4605 | } |
| 4606 | |
| 4607 | |
| 4608 | void MacroAssembler::MakeSureDoubleAlignedHelper(Register result, |
| 4609 | Register scratch, |
| 4610 | Label* gc_required, |
| 4611 | AllocationFlags flags) { |
| 4612 | if (kPointerSize == kDoubleSize) { |
| 4613 | if (FLAG_debug_code) { |
| 4614 | testl(result, Immediate(kDoubleAlignmentMask)); |
| 4615 | Check(zero, kAllocationIsNotDoubleAligned); |
| 4616 | } |
| 4617 | } else { |
| 4618 | // Align the next allocation. Storing the filler map without checking top |
| 4619 | // is safe in new-space because the limit of the heap is aligned there. |
| 4620 | DCHECK(kPointerSize * 2 == kDoubleSize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4621 | DCHECK(kPointerAlignment * 2 == kDoubleAlignment); |
| 4622 | // Make sure scratch is not clobbered by this function as it might be |
| 4623 | // used in UpdateAllocationTopHelper later. |
| 4624 | DCHECK(!scratch.is(kScratchRegister)); |
| 4625 | Label aligned; |
| 4626 | testl(result, Immediate(kDoubleAlignmentMask)); |
| 4627 | j(zero, &aligned, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4628 | if ((flags & PRETENURE) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4629 | ExternalReference allocation_limit = |
| 4630 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4631 | cmpp(result, ExternalOperand(allocation_limit)); |
| 4632 | j(above_equal, gc_required); |
| 4633 | } |
| 4634 | LoadRoot(kScratchRegister, Heap::kOnePointerFillerMapRootIndex); |
| 4635 | movp(Operand(result, 0), kScratchRegister); |
| 4636 | addp(result, Immediate(kDoubleSize / 2)); |
| 4637 | bind(&aligned); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4638 | } |
| 4639 | } |
| 4640 | |
| 4641 | |
| 4642 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4643 | Register scratch, |
| 4644 | AllocationFlags flags) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4645 | if (emit_debug_code()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4646 | testp(result_end, Immediate(kObjectAlignmentMask)); |
| 4647 | Check(zero, kUnalignedAllocationInNewSpace); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 4648 | } |
| 4649 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4650 | ExternalReference allocation_top = |
| 4651 | AllocationUtils::GetAllocationTopReference(isolate(), flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4652 | |
| 4653 | // Update new top. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4654 | if (scratch.is_valid()) { |
| 4655 | // Scratch already contains address of allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4656 | movp(Operand(scratch, 0), result_end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4657 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4658 | Store(allocation_top, result_end); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4659 | } |
| 4660 | } |
| 4661 | |
| 4662 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4663 | void MacroAssembler::Allocate(int object_size, |
| 4664 | Register result, |
| 4665 | Register result_end, |
| 4666 | Register scratch, |
| 4667 | Label* gc_required, |
| 4668 | AllocationFlags flags) { |
| 4669 | DCHECK((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0); |
| 4670 | DCHECK(object_size <= Page::kMaxRegularHeapObjectSize); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4671 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4672 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4673 | // Trash the registers to simulate an allocation failure. |
| 4674 | movl(result, Immediate(0x7091)); |
| 4675 | if (result_end.is_valid()) { |
| 4676 | movl(result_end, Immediate(0x7191)); |
| 4677 | } |
| 4678 | if (scratch.is_valid()) { |
| 4679 | movl(scratch, Immediate(0x7291)); |
| 4680 | } |
| 4681 | } |
| 4682 | jmp(gc_required); |
| 4683 | return; |
| 4684 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4685 | DCHECK(!result.is(result_end)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4686 | |
| 4687 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4688 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4689 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4690 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4691 | MakeSureDoubleAlignedHelper(result, scratch, gc_required, flags); |
| 4692 | } |
| 4693 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4694 | // Calculate new top and bail out if new space is exhausted. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4695 | ExternalReference allocation_limit = |
| 4696 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4697 | |
| 4698 | Register top_reg = result_end.is_valid() ? result_end : result; |
| 4699 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4700 | if (!top_reg.is(result)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4701 | movp(top_reg, result); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4702 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4703 | addp(top_reg, Immediate(object_size)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4704 | j(carry, gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4705 | Operand limit_operand = ExternalOperand(allocation_limit); |
| 4706 | cmpp(top_reg, limit_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4707 | j(above, gc_required); |
| 4708 | |
| 4709 | // Update allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4710 | UpdateAllocationTopHelper(top_reg, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4711 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4712 | bool tag_result = (flags & TAG_OBJECT) != 0; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4713 | if (top_reg.is(result)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4714 | if (tag_result) { |
| 4715 | subp(result, Immediate(object_size - kHeapObjectTag)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4716 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4717 | subp(result, Immediate(object_size)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4718 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4719 | } else if (tag_result) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4720 | // Tag the result if requested. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4721 | DCHECK(kHeapObjectTag == 1); |
| 4722 | incp(result); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4723 | } |
| 4724 | } |
| 4725 | |
| 4726 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4727 | void MacroAssembler::Allocate(int header_size, |
| 4728 | ScaleFactor element_size, |
| 4729 | Register element_count, |
| 4730 | Register result, |
| 4731 | Register result_end, |
| 4732 | Register scratch, |
| 4733 | Label* gc_required, |
| 4734 | AllocationFlags flags) { |
| 4735 | DCHECK((flags & SIZE_IN_WORDS) == 0); |
| 4736 | leap(result_end, Operand(element_count, element_size, header_size)); |
| 4737 | Allocate(result_end, result, result_end, scratch, gc_required, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4738 | } |
| 4739 | |
| 4740 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4741 | void MacroAssembler::Allocate(Register object_size, |
| 4742 | Register result, |
| 4743 | Register result_end, |
| 4744 | Register scratch, |
| 4745 | Label* gc_required, |
| 4746 | AllocationFlags flags) { |
| 4747 | DCHECK((flags & SIZE_IN_WORDS) == 0); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4748 | if (!FLAG_inline_new) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4749 | if (emit_debug_code()) { |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4750 | // Trash the registers to simulate an allocation failure. |
| 4751 | movl(result, Immediate(0x7091)); |
| 4752 | movl(result_end, Immediate(0x7191)); |
| 4753 | if (scratch.is_valid()) { |
| 4754 | movl(scratch, Immediate(0x7291)); |
| 4755 | } |
| 4756 | // object_size is left unchanged by this function. |
| 4757 | } |
| 4758 | jmp(gc_required); |
| 4759 | return; |
| 4760 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4761 | DCHECK(!result.is(result_end)); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 4762 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4763 | // Load address of new object into result. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 4764 | LoadAllocationTopHelper(result, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4765 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4766 | if ((flags & DOUBLE_ALIGNMENT) != 0) { |
| 4767 | MakeSureDoubleAlignedHelper(result, scratch, gc_required, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4768 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4769 | |
| 4770 | // Calculate new top and bail out if new space is exhausted. |
| 4771 | ExternalReference allocation_limit = |
| 4772 | AllocationUtils::GetAllocationLimitReference(isolate(), flags); |
| 4773 | if (!object_size.is(result_end)) { |
| 4774 | movp(result_end, object_size); |
| 4775 | } |
| 4776 | addp(result_end, result); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4777 | j(carry, gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4778 | Operand limit_operand = ExternalOperand(allocation_limit); |
| 4779 | cmpp(result_end, limit_operand); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4780 | j(above, gc_required); |
| 4781 | |
| 4782 | // Update allocation top. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4783 | UpdateAllocationTopHelper(result_end, scratch, flags); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4784 | |
| 4785 | // Tag the result if requested. |
| 4786 | if ((flags & TAG_OBJECT) != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4787 | addp(result, Immediate(kHeapObjectTag)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4788 | } |
| 4789 | } |
| 4790 | |
| 4791 | |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4792 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 4793 | Register scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4794 | Label* gc_required, |
| 4795 | MutableMode mode) { |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4796 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4797 | Allocate(HeapNumber::kSize, result, scratch, no_reg, gc_required, TAG_OBJECT); |
| 4798 | |
| 4799 | Heap::RootListIndex map_index = mode == MUTABLE |
| 4800 | ? Heap::kMutableHeapNumberMapRootIndex |
| 4801 | : Heap::kHeapNumberMapRootIndex; |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4802 | |
| 4803 | // Set the map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4804 | LoadRoot(kScratchRegister, map_index); |
| 4805 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 4806 | } |
| 4807 | |
| 4808 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4809 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 4810 | Register length, |
| 4811 | Register scratch1, |
| 4812 | Register scratch2, |
| 4813 | Register scratch3, |
| 4814 | Label* gc_required) { |
| 4815 | // Calculate the number of bytes needed for the characters in the string while |
| 4816 | // observing object alignment. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4817 | const int kHeaderAlignment = SeqTwoByteString::kHeaderSize & |
| 4818 | kObjectAlignmentMask; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4819 | DCHECK(kShortSize == 2); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4820 | // scratch1 = length * 2 + kObjectAlignmentMask. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4821 | leap(scratch1, Operand(length, length, times_1, kObjectAlignmentMask + |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4822 | kHeaderAlignment)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4823 | andp(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4824 | if (kHeaderAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4825 | subp(scratch1, Immediate(kHeaderAlignment)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4826 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4827 | |
| 4828 | // Allocate two byte string in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4829 | Allocate(SeqTwoByteString::kHeaderSize, |
| 4830 | times_1, |
| 4831 | scratch1, |
| 4832 | result, |
| 4833 | scratch2, |
| 4834 | scratch3, |
| 4835 | gc_required, |
| 4836 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4837 | |
| 4838 | // Set the map, length and hash field. |
| 4839 | LoadRoot(kScratchRegister, Heap::kStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4840 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4841 | Integer32ToSmi(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4842 | movp(FieldOperand(result, String::kLengthOffset), scratch1); |
| 4843 | movp(FieldOperand(result, String::kHashFieldOffset), |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4844 | Immediate(String::kEmptyHashField)); |
| 4845 | } |
| 4846 | |
| 4847 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4848 | void MacroAssembler::AllocateOneByteString(Register result, Register length, |
| 4849 | Register scratch1, Register scratch2, |
| 4850 | Register scratch3, |
| 4851 | Label* gc_required) { |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4852 | // Calculate the number of bytes needed for the characters in the string while |
| 4853 | // observing object alignment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4854 | const int kHeaderAlignment = SeqOneByteString::kHeaderSize & |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4855 | kObjectAlignmentMask; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4856 | movl(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4857 | DCHECK(kCharSize == 1); |
| 4858 | addp(scratch1, Immediate(kObjectAlignmentMask + kHeaderAlignment)); |
| 4859 | andp(scratch1, Immediate(~kObjectAlignmentMask)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4860 | if (kHeaderAlignment > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4861 | subp(scratch1, Immediate(kHeaderAlignment)); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4862 | } |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4863 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4864 | // Allocate one-byte string in new space. |
| 4865 | Allocate(SeqOneByteString::kHeaderSize, |
| 4866 | times_1, |
| 4867 | scratch1, |
| 4868 | result, |
| 4869 | scratch2, |
| 4870 | scratch3, |
| 4871 | gc_required, |
| 4872 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4873 | |
| 4874 | // Set the map, length and hash field. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4875 | LoadRoot(kScratchRegister, Heap::kOneByteStringMapRootIndex); |
| 4876 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 4877 | Integer32ToSmi(scratch1, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4878 | movp(FieldOperand(result, String::kLengthOffset), scratch1); |
| 4879 | movp(FieldOperand(result, String::kHashFieldOffset), |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4880 | Immediate(String::kEmptyHashField)); |
| 4881 | } |
| 4882 | |
| 4883 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4884 | void MacroAssembler::AllocateTwoByteConsString(Register result, |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4885 | Register scratch1, |
| 4886 | Register scratch2, |
| 4887 | Label* gc_required) { |
| 4888 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4889 | Allocate(ConsString::kSize, result, scratch1, scratch2, gc_required, |
| 4890 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4891 | |
| 4892 | // Set the map. The other fields are left uninitialized. |
| 4893 | LoadRoot(kScratchRegister, Heap::kConsStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4894 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4895 | } |
| 4896 | |
| 4897 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4898 | void MacroAssembler::AllocateOneByteConsString(Register result, |
| 4899 | Register scratch1, |
| 4900 | Register scratch2, |
| 4901 | Label* gc_required) { |
| 4902 | Allocate(ConsString::kSize, |
| 4903 | result, |
| 4904 | scratch1, |
| 4905 | scratch2, |
| 4906 | gc_required, |
| 4907 | TAG_OBJECT); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4908 | |
| 4909 | // Set the map. The other fields are left uninitialized. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4910 | LoadRoot(kScratchRegister, Heap::kConsOneByteStringMapRootIndex); |
| 4911 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 4912 | } |
| 4913 | |
| 4914 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4915 | void MacroAssembler::AllocateTwoByteSlicedString(Register result, |
| 4916 | Register scratch1, |
| 4917 | Register scratch2, |
| 4918 | Label* gc_required) { |
| 4919 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4920 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 4921 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4922 | |
| 4923 | // Set the map. The other fields are left uninitialized. |
| 4924 | LoadRoot(kScratchRegister, Heap::kSlicedStringMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4925 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4926 | } |
| 4927 | |
| 4928 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4929 | void MacroAssembler::AllocateOneByteSlicedString(Register result, |
| 4930 | Register scratch1, |
| 4931 | Register scratch2, |
| 4932 | Label* gc_required) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4933 | // Allocate heap number in new space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4934 | Allocate(SlicedString::kSize, result, scratch1, scratch2, gc_required, |
| 4935 | TAG_OBJECT); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4936 | |
| 4937 | // Set the map. The other fields are left uninitialized. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4938 | LoadRoot(kScratchRegister, Heap::kSlicedOneByteStringMapRootIndex); |
| 4939 | movp(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4940 | } |
| 4941 | |
| 4942 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4943 | void MacroAssembler::AllocateJSValue(Register result, Register constructor, |
| 4944 | Register value, Register scratch, |
| 4945 | Label* gc_required) { |
| 4946 | DCHECK(!result.is(constructor)); |
| 4947 | DCHECK(!result.is(scratch)); |
| 4948 | DCHECK(!result.is(value)); |
| 4949 | |
| 4950 | // Allocate JSValue in new space. |
| 4951 | Allocate(JSValue::kSize, result, scratch, no_reg, gc_required, TAG_OBJECT); |
| 4952 | |
| 4953 | // Initialize the JSValue. |
| 4954 | LoadGlobalFunctionInitialMap(constructor, scratch); |
| 4955 | movp(FieldOperand(result, HeapObject::kMapOffset), scratch); |
| 4956 | LoadRoot(scratch, Heap::kEmptyFixedArrayRootIndex); |
| 4957 | movp(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 4958 | movp(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 4959 | movp(FieldOperand(result, JSValue::kValueOffset), value); |
| 4960 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
| 4961 | } |
| 4962 | |
| 4963 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4964 | // Copy memory, byte-by-byte, from source to destination. Not optimized for |
| 4965 | // long or aligned copies. The contents of scratch and length are destroyed. |
| 4966 | // Destination is incremented by length, source, length and scratch are |
| 4967 | // clobbered. |
| 4968 | // A simpler loop is faster on small copies, but slower on large ones. |
| 4969 | // The cld() instruction must have been emitted, to set the direction flag(), |
| 4970 | // before calling this function. |
| 4971 | void MacroAssembler::CopyBytes(Register destination, |
| 4972 | Register source, |
| 4973 | Register length, |
| 4974 | int min_length, |
| 4975 | Register scratch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4976 | DCHECK(min_length >= 0); |
| 4977 | if (emit_debug_code()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4978 | cmpl(length, Immediate(min_length)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4979 | Assert(greater_equal, kInvalidMinLength); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4980 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4981 | Label short_loop, len8, len16, len24, done, short_string; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4982 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4983 | const int kLongStringLimit = 4 * kPointerSize; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4984 | if (min_length <= kLongStringLimit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4985 | cmpl(length, Immediate(kPointerSize)); |
| 4986 | j(below, &short_string, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4987 | } |
| 4988 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4989 | DCHECK(source.is(rsi)); |
| 4990 | DCHECK(destination.is(rdi)); |
| 4991 | DCHECK(length.is(rcx)); |
| 4992 | |
| 4993 | if (min_length <= kLongStringLimit) { |
| 4994 | cmpl(length, Immediate(2 * kPointerSize)); |
| 4995 | j(below_equal, &len8, Label::kNear); |
| 4996 | cmpl(length, Immediate(3 * kPointerSize)); |
| 4997 | j(below_equal, &len16, Label::kNear); |
| 4998 | cmpl(length, Immediate(4 * kPointerSize)); |
| 4999 | j(below_equal, &len24, Label::kNear); |
| 5000 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5001 | |
| 5002 | // Because source is 8-byte aligned in our uses of this function, |
| 5003 | // we keep source aligned for the rep movs operation by copying the odd bytes |
| 5004 | // at the end of the ranges. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5005 | movp(scratch, length); |
| 5006 | shrl(length, Immediate(kPointerSizeLog2)); |
| 5007 | repmovsp(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5008 | // Move remaining bytes of length. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5009 | andl(scratch, Immediate(kPointerSize - 1)); |
| 5010 | movp(length, Operand(source, scratch, times_1, -kPointerSize)); |
| 5011 | movp(Operand(destination, scratch, times_1, -kPointerSize), length); |
| 5012 | addp(destination, scratch); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5013 | |
| 5014 | if (min_length <= kLongStringLimit) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5015 | jmp(&done, Label::kNear); |
| 5016 | bind(&len24); |
| 5017 | movp(scratch, Operand(source, 2 * kPointerSize)); |
| 5018 | movp(Operand(destination, 2 * kPointerSize), scratch); |
| 5019 | bind(&len16); |
| 5020 | movp(scratch, Operand(source, kPointerSize)); |
| 5021 | movp(Operand(destination, kPointerSize), scratch); |
| 5022 | bind(&len8); |
| 5023 | movp(scratch, Operand(source, 0)); |
| 5024 | movp(Operand(destination, 0), scratch); |
| 5025 | // Move remaining bytes of length. |
| 5026 | movp(scratch, Operand(source, length, times_1, -kPointerSize)); |
| 5027 | movp(Operand(destination, length, times_1, -kPointerSize), scratch); |
| 5028 | addp(destination, length); |
| 5029 | jmp(&done, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5030 | |
| 5031 | bind(&short_string); |
| 5032 | if (min_length == 0) { |
| 5033 | testl(length, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5034 | j(zero, &done, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5035 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5036 | |
| 5037 | bind(&short_loop); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5038 | movb(scratch, Operand(source, 0)); |
| 5039 | movb(Operand(destination, 0), scratch); |
| 5040 | incp(source); |
| 5041 | incp(destination); |
| 5042 | decl(length); |
| 5043 | j(not_zero, &short_loop); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5044 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5045 | |
| 5046 | bind(&done); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5047 | } |
| 5048 | |
| 5049 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5050 | void MacroAssembler::InitializeFieldsWithFiller(Register current_address, |
| 5051 | Register end_address, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5052 | Register filler) { |
| 5053 | Label loop, entry; |
| 5054 | jmp(&entry); |
| 5055 | bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5056 | movp(Operand(current_address, 0), filler); |
| 5057 | addp(current_address, Immediate(kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5058 | bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5059 | cmpp(current_address, end_address); |
| 5060 | j(below, &loop); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5061 | } |
| 5062 | |
| 5063 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5064 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 5065 | if (context_chain_length > 0) { |
| 5066 | // Move up the chain of contexts to the context containing the slot. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5067 | movp(dst, Operand(rsi, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5068 | for (int i = 1; i < context_chain_length; i++) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5069 | movp(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5070 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5071 | } else { |
| 5072 | // Slot is in the current function context. Move it into the |
| 5073 | // destination register in case we store into it (the write barrier |
| 5074 | // cannot be allowed to destroy the context in rsi). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5075 | movp(dst, rsi); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5076 | } |
| 5077 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5078 | // We should not have found a with context by walking the context |
| 5079 | // chain (i.e., the static scope chain and runtime context chain do |
| 5080 | // not agree). A variable occurring in such a scope should have |
| 5081 | // slot type LOOKUP and not CONTEXT. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5082 | if (emit_debug_code()) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5083 | CompareRoot(FieldOperand(dst, HeapObject::kMapOffset), |
| 5084 | Heap::kWithContextMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5085 | Check(not_equal, kVariableResolvedToWithContext); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5086 | } |
| 5087 | } |
| 5088 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5089 | |
| 5090 | void MacroAssembler::LoadTransitionedArrayMapConditional( |
| 5091 | ElementsKind expected_kind, |
| 5092 | ElementsKind transitioned_kind, |
| 5093 | Register map_in_out, |
| 5094 | Register scratch, |
| 5095 | Label* no_map_match) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5096 | DCHECK(IsFastElementsKind(expected_kind)); |
| 5097 | DCHECK(IsFastElementsKind(transitioned_kind)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5098 | |
| 5099 | // 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^] | 5100 | movp(scratch, NativeContextOperand()); |
| 5101 | cmpp(map_in_out, |
| 5102 | ContextOperand(scratch, Context::ArrayMapIndex(expected_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5103 | j(not_equal, no_map_match); |
| 5104 | |
| 5105 | // Use the transitioned cached map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5106 | movp(map_in_out, |
| 5107 | ContextOperand(scratch, Context::ArrayMapIndex(transitioned_kind))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5108 | } |
| 5109 | |
| 5110 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5111 | #ifdef _WIN64 |
| 5112 | static const int kRegisterPassedArguments = 4; |
| 5113 | #else |
| 5114 | static const int kRegisterPassedArguments = 6; |
| 5115 | #endif |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5116 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5117 | |
| 5118 | void MacroAssembler::LoadNativeContextSlot(int index, Register dst) { |
| 5119 | movp(dst, NativeContextOperand()); |
| 5120 | movp(dst, ContextOperand(dst, index)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5121 | } |
| 5122 | |
| 5123 | |
| 5124 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 5125 | Register map) { |
| 5126 | // Load the initial map. The global functions all have initial maps. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5127 | movp(map, FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5128 | if (emit_debug_code()) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5129 | Label ok, fail; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5130 | CheckMap(map, isolate()->factory()->meta_map(), &fail, DO_SMI_CHECK); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5131 | jmp(&ok); |
| 5132 | bind(&fail); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5133 | Abort(kGlobalFunctionsMustHaveInitialMap); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5134 | bind(&ok); |
| 5135 | } |
| 5136 | } |
| 5137 | |
| 5138 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5139 | int MacroAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5140 | // On Windows 64 stack slots are reserved by the caller for all arguments |
| 5141 | // including the ones passed in registers, and space is always allocated for |
| 5142 | // the four register arguments even if the function takes fewer than four |
| 5143 | // arguments. |
| 5144 | // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers |
| 5145 | // and the caller does not reserve stack slots for them. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5146 | DCHECK(num_arguments >= 0); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5147 | #ifdef _WIN64 |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5148 | const int kMinimumStackSlots = kRegisterPassedArguments; |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5149 | if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
| 5150 | return num_arguments; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5151 | #else |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5152 | if (num_arguments < kRegisterPassedArguments) return 0; |
| 5153 | return num_arguments - kRegisterPassedArguments; |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5154 | #endif |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5155 | } |
| 5156 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 5157 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5158 | void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
| 5159 | Register index, |
| 5160 | Register value, |
| 5161 | uint32_t encoding_mask) { |
| 5162 | Label is_object; |
| 5163 | JumpIfNotSmi(string, &is_object); |
| 5164 | Abort(kNonObject); |
| 5165 | bind(&is_object); |
| 5166 | |
| 5167 | Push(value); |
| 5168 | movp(value, FieldOperand(string, HeapObject::kMapOffset)); |
| 5169 | movzxbp(value, FieldOperand(value, Map::kInstanceTypeOffset)); |
| 5170 | |
| 5171 | andb(value, Immediate(kStringRepresentationMask | kStringEncodingMask)); |
| 5172 | cmpp(value, Immediate(encoding_mask)); |
| 5173 | Pop(value); |
| 5174 | Check(equal, kUnexpectedStringType); |
| 5175 | |
| 5176 | // The index is assumed to be untagged coming in, tag it to compare with the |
| 5177 | // string length without using a temp register, it is restored at the end of |
| 5178 | // this function. |
| 5179 | Integer32ToSmi(index, index); |
| 5180 | SmiCompare(index, FieldOperand(string, String::kLengthOffset)); |
| 5181 | Check(less, kIndexIsTooLarge); |
| 5182 | |
| 5183 | SmiCompare(index, Smi::FromInt(0)); |
| 5184 | Check(greater_equal, kIndexIsNegative); |
| 5185 | |
| 5186 | // Restore the index |
| 5187 | SmiToInteger32(index, index); |
| 5188 | } |
| 5189 | |
| 5190 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5191 | void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5192 | int frame_alignment = base::OS::ActivationFrameAlignment(); |
| 5193 | DCHECK(frame_alignment != 0); |
| 5194 | DCHECK(num_arguments >= 0); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5195 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5196 | // 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] | 5197 | movp(kScratchRegister, rsp); |
| 5198 | DCHECK(base::bits::IsPowerOfTwo32(frame_alignment)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5199 | int argument_slots_on_stack = |
| 5200 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5201 | subp(rsp, Immediate((argument_slots_on_stack + 1) * kRegisterSize)); |
| 5202 | andp(rsp, Immediate(-frame_alignment)); |
| 5203 | movp(Operand(rsp, argument_slots_on_stack * kRegisterSize), kScratchRegister); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5204 | } |
| 5205 | |
| 5206 | |
| 5207 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 5208 | int num_arguments) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5209 | LoadAddress(rax, function); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5210 | CallCFunction(rax, num_arguments); |
| 5211 | } |
| 5212 | |
| 5213 | |
| 5214 | void MacroAssembler::CallCFunction(Register function, int num_arguments) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5215 | DCHECK(has_frame()); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5216 | // Check stack alignment. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5217 | if (emit_debug_code()) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 5218 | CheckStackAlignment(); |
| 5219 | } |
| 5220 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5221 | call(function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5222 | DCHECK(base::OS::ActivationFrameAlignment() != 0); |
| 5223 | DCHECK(num_arguments >= 0); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5224 | int argument_slots_on_stack = |
| 5225 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5226 | movp(rsp, Operand(rsp, argument_slots_on_stack * kRegisterSize)); |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 5227 | } |
| 5228 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 5229 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5230 | #ifdef DEBUG |
| 5231 | bool AreAliased(Register reg1, |
| 5232 | Register reg2, |
| 5233 | Register reg3, |
| 5234 | Register reg4, |
| 5235 | Register reg5, |
| 5236 | Register reg6, |
| 5237 | Register reg7, |
| 5238 | Register reg8) { |
| 5239 | int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + |
| 5240 | reg3.is_valid() + reg4.is_valid() + reg5.is_valid() + reg6.is_valid() + |
| 5241 | reg7.is_valid() + reg8.is_valid(); |
| 5242 | |
| 5243 | RegList regs = 0; |
| 5244 | if (reg1.is_valid()) regs |= reg1.bit(); |
| 5245 | if (reg2.is_valid()) regs |= reg2.bit(); |
| 5246 | if (reg3.is_valid()) regs |= reg3.bit(); |
| 5247 | if (reg4.is_valid()) regs |= reg4.bit(); |
| 5248 | if (reg5.is_valid()) regs |= reg5.bit(); |
| 5249 | if (reg6.is_valid()) regs |= reg6.bit(); |
| 5250 | if (reg7.is_valid()) regs |= reg7.bit(); |
| 5251 | if (reg8.is_valid()) regs |= reg8.bit(); |
| 5252 | int n_of_non_aliasing_regs = NumRegs(regs); |
| 5253 | |
| 5254 | return n_of_valid_regs != n_of_non_aliasing_regs; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5255 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5256 | #endif |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5257 | |
| 5258 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5259 | CodePatcher::CodePatcher(Isolate* isolate, byte* address, int size) |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 5260 | : address_(address), |
| 5261 | size_(size), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5262 | masm_(isolate, address, size + Assembler::kGap, CodeObjectRequired::kNo) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5263 | // Create a new macro assembler pointing to the address of the code to patch. |
| 5264 | // The size is adjusted with kGap on order for the assembler to generate size |
| 5265 | // bytes of instructions without failing with buffer size constraints. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5266 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5267 | } |
| 5268 | |
| 5269 | |
| 5270 | CodePatcher::~CodePatcher() { |
| 5271 | // Indicate that code has changed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5272 | Assembler::FlushICache(masm_.isolate(), address_, size_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5273 | |
| 5274 | // Check that the code was patched as expected. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5275 | DCHECK(masm_.pc_ == address_ + size_); |
| 5276 | DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 5277 | } |
| 5278 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5279 | |
| 5280 | void MacroAssembler::CheckPageFlag( |
| 5281 | Register object, |
| 5282 | Register scratch, |
| 5283 | int mask, |
| 5284 | Condition cc, |
| 5285 | Label* condition_met, |
| 5286 | Label::Distance condition_met_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5287 | DCHECK(cc == zero || cc == not_zero); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5288 | if (scratch.is(object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5289 | andp(scratch, Immediate(~Page::kPageAlignmentMask)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5290 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5291 | movp(scratch, Immediate(~Page::kPageAlignmentMask)); |
| 5292 | andp(scratch, object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5293 | } |
| 5294 | if (mask < (1 << kBitsPerByte)) { |
| 5295 | testb(Operand(scratch, MemoryChunk::kFlagsOffset), |
| 5296 | Immediate(static_cast<uint8_t>(mask))); |
| 5297 | } else { |
| 5298 | testl(Operand(scratch, MemoryChunk::kFlagsOffset), Immediate(mask)); |
| 5299 | } |
| 5300 | j(cc, condition_met, condition_met_distance); |
| 5301 | } |
| 5302 | |
| 5303 | |
| 5304 | void MacroAssembler::JumpIfBlack(Register object, |
| 5305 | Register bitmap_scratch, |
| 5306 | Register mask_scratch, |
| 5307 | Label* on_black, |
| 5308 | Label::Distance on_black_distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5309 | DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, rcx)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5310 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5311 | GetMarkBits(object, bitmap_scratch, mask_scratch); |
| 5312 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5313 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5314 | // 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^] | 5315 | // 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] | 5316 | movp(rcx, mask_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5317 | andp(rcx, Operand(bitmap_scratch, MemoryChunk::kHeaderSize)); |
| 5318 | cmpp(mask_scratch, rcx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5319 | j(equal, on_black, on_black_distance); |
| 5320 | } |
| 5321 | |
| 5322 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5323 | void MacroAssembler::GetMarkBits(Register addr_reg, |
| 5324 | Register bitmap_reg, |
| 5325 | Register mask_reg) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5326 | DCHECK(!AreAliased(addr_reg, bitmap_reg, mask_reg, rcx)); |
| 5327 | movp(bitmap_reg, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5328 | // Sign extended 32 bit immediate. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5329 | andp(bitmap_reg, Immediate(~Page::kPageAlignmentMask)); |
| 5330 | movp(rcx, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5331 | int shift = |
| 5332 | Bitmap::kBitsPerCellLog2 + kPointerSizeLog2 - Bitmap::kBytesPerCellLog2; |
| 5333 | shrl(rcx, Immediate(shift)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5334 | andp(rcx, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5335 | Immediate((Page::kPageAlignmentMask >> shift) & |
| 5336 | ~(Bitmap::kBytesPerCell - 1))); |
| 5337 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5338 | addp(bitmap_reg, rcx); |
| 5339 | movp(rcx, addr_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5340 | shrl(rcx, Immediate(kPointerSizeLog2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5341 | andp(rcx, Immediate((1 << Bitmap::kBitsPerCellLog2) - 1)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5342 | movl(mask_reg, Immediate(3)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5343 | shlp_cl(mask_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5344 | } |
| 5345 | |
| 5346 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5347 | void MacroAssembler::JumpIfWhite(Register value, Register bitmap_scratch, |
| 5348 | Register mask_scratch, Label* value_is_white, |
| 5349 | Label::Distance distance) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5350 | DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, rcx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5351 | GetMarkBits(value, bitmap_scratch, mask_scratch); |
| 5352 | |
| 5353 | // 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] | 5354 | DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5355 | DCHECK(strcmp(Marking::kBlackBitPattern, "11") == 0); |
| 5356 | DCHECK(strcmp(Marking::kGreyBitPattern, "10") == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5357 | DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5358 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5359 | // Since both black and grey have a 1 in the first position and white does |
| 5360 | // not have a 1 there we only need to check one bit. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5361 | testp(Operand(bitmap_scratch, MemoryChunk::kHeaderSize), mask_scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5362 | j(zero, value_is_white, distance); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5363 | } |
| 5364 | |
| 5365 | |
| 5366 | void MacroAssembler::CheckEnumCache(Register null_value, Label* call_runtime) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5367 | Label next, start; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5368 | Register empty_fixed_array_value = r8; |
| 5369 | LoadRoot(empty_fixed_array_value, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5370 | movp(rcx, rax); |
| 5371 | |
| 5372 | // Check if the enum length field is properly initialized, indicating that |
| 5373 | // there is an enum cache. |
| 5374 | movp(rbx, FieldOperand(rcx, HeapObject::kMapOffset)); |
| 5375 | |
| 5376 | EnumLength(rdx, rbx); |
| 5377 | Cmp(rdx, Smi::FromInt(kInvalidEnumCacheSentinel)); |
| 5378 | j(equal, call_runtime); |
| 5379 | |
| 5380 | jmp(&start); |
| 5381 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5382 | bind(&next); |
| 5383 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5384 | movp(rbx, FieldOperand(rcx, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5385 | |
| 5386 | // For all objects but the receiver, check that the cache is empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5387 | EnumLength(rdx, rbx); |
| 5388 | Cmp(rdx, Smi::FromInt(0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5389 | j(not_equal, call_runtime); |
| 5390 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5391 | bind(&start); |
| 5392 | |
| 5393 | // Check that there are no elements. Register rcx contains the current JS |
| 5394 | // object we've reached through the prototype chain. |
| 5395 | Label no_elements; |
| 5396 | cmpp(empty_fixed_array_value, |
| 5397 | FieldOperand(rcx, JSObject::kElementsOffset)); |
| 5398 | j(equal, &no_elements); |
| 5399 | |
| 5400 | // Second chance, the object may be using the empty slow element dictionary. |
| 5401 | LoadRoot(kScratchRegister, Heap::kEmptySlowElementDictionaryRootIndex); |
| 5402 | cmpp(kScratchRegister, FieldOperand(rcx, JSObject::kElementsOffset)); |
| 5403 | j(not_equal, call_runtime); |
| 5404 | |
| 5405 | bind(&no_elements); |
| 5406 | movp(rcx, FieldOperand(rbx, Map::kPrototypeOffset)); |
| 5407 | cmpp(rcx, null_value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5408 | j(not_equal, &next); |
| 5409 | } |
| 5410 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5411 | void MacroAssembler::TestJSArrayForAllocationMemento( |
| 5412 | Register receiver_reg, |
| 5413 | Register scratch_reg, |
| 5414 | Label* no_memento_found) { |
| 5415 | ExternalReference new_space_start = |
| 5416 | ExternalReference::new_space_start(isolate()); |
| 5417 | ExternalReference new_space_allocation_top = |
| 5418 | ExternalReference::new_space_allocation_top_address(isolate()); |
| 5419 | |
| 5420 | leap(scratch_reg, Operand(receiver_reg, |
| 5421 | JSArray::kSize + AllocationMemento::kSize - kHeapObjectTag)); |
| 5422 | Move(kScratchRegister, new_space_start); |
| 5423 | cmpp(scratch_reg, kScratchRegister); |
| 5424 | j(less, no_memento_found); |
| 5425 | cmpp(scratch_reg, ExternalOperand(new_space_allocation_top)); |
| 5426 | j(greater, no_memento_found); |
| 5427 | CompareRoot(MemOperand(scratch_reg, -AllocationMemento::kSize), |
| 5428 | Heap::kAllocationMementoMapRootIndex); |
| 5429 | } |
| 5430 | |
| 5431 | |
| 5432 | void MacroAssembler::JumpIfDictionaryInPrototypeChain( |
| 5433 | Register object, |
| 5434 | Register scratch0, |
| 5435 | Register scratch1, |
| 5436 | Label* found) { |
| 5437 | DCHECK(!(scratch0.is(kScratchRegister) && scratch1.is(kScratchRegister))); |
| 5438 | DCHECK(!scratch1.is(scratch0)); |
| 5439 | Register current = scratch0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5440 | Label loop_again, end; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5441 | |
| 5442 | movp(current, object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5443 | movp(current, FieldOperand(current, HeapObject::kMapOffset)); |
| 5444 | movp(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 5445 | CompareRoot(current, Heap::kNullValueRootIndex); |
| 5446 | j(equal, &end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5447 | |
| 5448 | // Loop based on the map going up the prototype chain. |
| 5449 | bind(&loop_again); |
| 5450 | movp(current, FieldOperand(current, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5451 | STATIC_ASSERT(JS_PROXY_TYPE < JS_OBJECT_TYPE); |
| 5452 | STATIC_ASSERT(JS_VALUE_TYPE < JS_OBJECT_TYPE); |
| 5453 | CmpInstanceType(current, JS_OBJECT_TYPE); |
| 5454 | j(below, found); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5455 | movp(scratch1, FieldOperand(current, Map::kBitField2Offset)); |
| 5456 | DecodeField<Map::ElementsKindBits>(scratch1); |
| 5457 | cmpp(scratch1, Immediate(DICTIONARY_ELEMENTS)); |
| 5458 | j(equal, found); |
| 5459 | movp(current, FieldOperand(current, Map::kPrototypeOffset)); |
| 5460 | CompareRoot(current, Heap::kNullValueRootIndex); |
| 5461 | j(not_equal, &loop_again); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5462 | |
| 5463 | bind(&end); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5464 | } |
| 5465 | |
| 5466 | |
| 5467 | void MacroAssembler::TruncatingDiv(Register dividend, int32_t divisor) { |
| 5468 | DCHECK(!dividend.is(rax)); |
| 5469 | DCHECK(!dividend.is(rdx)); |
| 5470 | base::MagicNumbersForDivision<uint32_t> mag = |
| 5471 | base::SignedDivisionByConstant(static_cast<uint32_t>(divisor)); |
| 5472 | movl(rax, Immediate(mag.multiplier)); |
| 5473 | imull(dividend); |
| 5474 | bool neg = (mag.multiplier & (static_cast<uint32_t>(1) << 31)) != 0; |
| 5475 | if (divisor > 0 && neg) addl(rdx, dividend); |
| 5476 | if (divisor < 0 && !neg && mag.multiplier > 0) subl(rdx, dividend); |
| 5477 | if (mag.shift > 0) sarl(rdx, Immediate(mag.shift)); |
| 5478 | movl(rax, dividend); |
| 5479 | shrl(rax, Immediate(31)); |
| 5480 | addl(rdx, rax); |
| 5481 | } |
| 5482 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5483 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5484 | } // namespace internal |
| 5485 | } // namespace v8 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 5486 | |
| 5487 | #endif // V8_TARGET_ARCH_X64 |