vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 28 | #include "v8.h" |
| 29 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 30 | #if defined(V8_TARGET_ARCH_X64) |
| 31 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 32 | #include "bootstrapper.h" |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 33 | #include "codegen.h" |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 34 | #include "assembler-x64.h" |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 35 | #include "macro-assembler-x64.h" |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 36 | #include "serialize.h" |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 37 | #include "debug.h" |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 38 | #include "heap.h" |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 39 | |
| 40 | namespace v8 { |
| 41 | namespace internal { |
| 42 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 43 | MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size) |
| 44 | : Assembler(arg_isolate, buffer, size), |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 45 | generating_stub_(false), |
| 46 | allow_stub_calls_(true), |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 47 | root_array_available_(true) { |
| 48 | if (isolate() != NULL) { |
| 49 | code_object_ = Handle<Object>(isolate()->heap()->undefined_value(), |
| 50 | isolate()); |
| 51 | } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 55 | static intptr_t RootRegisterDelta(ExternalReference other, Isolate* isolate) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 56 | Address roots_register_value = kRootRegisterBias + |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 57 | reinterpret_cast<Address>(isolate->heap()->roots_address()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 58 | intptr_t delta = other.address() - roots_register_value; |
| 59 | return delta; |
| 60 | } |
| 61 | |
| 62 | |
| 63 | Operand MacroAssembler::ExternalOperand(ExternalReference target, |
| 64 | Register scratch) { |
| 65 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 66 | intptr_t delta = RootRegisterDelta(target, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 67 | if (is_int32(delta)) { |
| 68 | Serializer::TooLateToEnableNow(); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 69 | return Operand(kRootRegister, static_cast<int32_t>(delta)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 70 | } |
| 71 | } |
| 72 | movq(scratch, target); |
| 73 | return Operand(scratch, 0); |
| 74 | } |
| 75 | |
| 76 | |
| 77 | void MacroAssembler::Load(Register destination, ExternalReference source) { |
| 78 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 79 | intptr_t delta = RootRegisterDelta(source, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 80 | if (is_int32(delta)) { |
| 81 | Serializer::TooLateToEnableNow(); |
| 82 | movq(destination, Operand(kRootRegister, static_cast<int32_t>(delta))); |
| 83 | return; |
| 84 | } |
| 85 | } |
| 86 | // Safe code. |
| 87 | if (destination.is(rax)) { |
| 88 | load_rax(source); |
| 89 | } else { |
| 90 | movq(kScratchRegister, source); |
| 91 | movq(destination, Operand(kScratchRegister, 0)); |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | |
| 96 | void MacroAssembler::Store(ExternalReference destination, Register source) { |
| 97 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 98 | intptr_t delta = RootRegisterDelta(destination, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 99 | if (is_int32(delta)) { |
| 100 | Serializer::TooLateToEnableNow(); |
| 101 | movq(Operand(kRootRegister, static_cast<int32_t>(delta)), source); |
| 102 | return; |
| 103 | } |
| 104 | } |
| 105 | // Safe code. |
| 106 | if (source.is(rax)) { |
| 107 | store_rax(destination); |
| 108 | } else { |
| 109 | movq(kScratchRegister, destination); |
| 110 | movq(Operand(kScratchRegister, 0), source); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | |
| 115 | void MacroAssembler::LoadAddress(Register destination, |
| 116 | ExternalReference source) { |
| 117 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 118 | intptr_t delta = RootRegisterDelta(source, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 119 | if (is_int32(delta)) { |
| 120 | Serializer::TooLateToEnableNow(); |
| 121 | lea(destination, Operand(kRootRegister, static_cast<int32_t>(delta))); |
| 122 | return; |
| 123 | } |
| 124 | } |
| 125 | // Safe code. |
| 126 | movq(destination, source); |
| 127 | } |
| 128 | |
| 129 | |
| 130 | int MacroAssembler::LoadAddressSize(ExternalReference source) { |
| 131 | if (root_array_available_ && !Serializer::enabled()) { |
| 132 | // This calculation depends on the internals of LoadAddress. |
| 133 | // It's correctness is ensured by the asserts in the Call |
| 134 | // instruction below. |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 135 | intptr_t delta = RootRegisterDelta(source, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 136 | if (is_int32(delta)) { |
| 137 | Serializer::TooLateToEnableNow(); |
| 138 | // Operand is lea(scratch, Operand(kRootRegister, delta)); |
| 139 | // Opcodes : REX.W 8D ModRM Disp8/Disp32 - 4 or 7. |
| 140 | int size = 4; |
| 141 | if (!is_int8(static_cast<int32_t>(delta))) { |
| 142 | size += 3; // Need full four-byte displacement in lea. |
| 143 | } |
| 144 | return size; |
| 145 | } |
| 146 | } |
| 147 | // Size of movq(destination, src); |
| 148 | return 10; |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 149 | } |
| 150 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 151 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 152 | void MacroAssembler::LoadRoot(Register destination, Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 153 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 154 | movq(destination, Operand(kRootRegister, |
| 155 | (index << kPointerSizeLog2) - kRootRegisterBias)); |
| 156 | } |
| 157 | |
| 158 | |
| 159 | void MacroAssembler::LoadRootIndexed(Register destination, |
| 160 | Register variable_offset, |
| 161 | int fixed_offset) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 162 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 163 | movq(destination, |
| 164 | Operand(kRootRegister, |
| 165 | variable_offset, times_pointer_size, |
| 166 | (fixed_offset << kPointerSizeLog2) - kRootRegisterBias)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 170 | void MacroAssembler::StoreRoot(Register source, Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 171 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 172 | movq(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias), |
| 173 | source); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 177 | void MacroAssembler::PushRoot(Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 178 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 179 | push(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 183 | void MacroAssembler::CompareRoot(Register with, Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 184 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 185 | cmpq(with, Operand(kRootRegister, |
| 186 | (index << kPointerSizeLog2) - kRootRegisterBias)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 187 | } |
| 188 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 189 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 190 | void MacroAssembler::CompareRoot(const Operand& with, |
| 191 | Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 192 | ASSERT(root_array_available_); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 193 | ASSERT(!with.AddressUsesRegister(kScratchRegister)); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 194 | LoadRoot(kScratchRegister, index); |
| 195 | cmpq(with, kScratchRegister); |
| 196 | } |
| 197 | |
| 198 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 199 | void MacroAssembler::RecordWriteHelper(Register object, |
| 200 | Register addr, |
| 201 | Register scratch) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 202 | if (emit_debug_code()) { |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 203 | // Check that the object is not in new space. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 204 | Label not_in_new_space; |
| 205 | InNewSpace(object, scratch, not_equal, ¬_in_new_space, Label::kNear); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 206 | Abort("new-space object passed to RecordWriteHelper"); |
| 207 | bind(¬_in_new_space); |
| 208 | } |
| 209 | |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 210 | // Compute the page start address from the heap object pointer, and reuse |
| 211 | // the 'object' register for it. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 212 | and_(object, Immediate(~Page::kPageAlignmentMask)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 213 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 214 | // Compute number of region covering addr. See Page::GetRegionNumberForAddress |
| 215 | // method for more details. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 216 | shrl(addr, Immediate(Page::kRegionSizeLog2)); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 217 | andl(addr, Immediate(Page::kPageAlignmentMask >> Page::kRegionSizeLog2)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 218 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 219 | // Set dirty mark for region. |
| 220 | bts(Operand(object, Page::kDirtyFlagOffset), addr); |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 224 | void MacroAssembler::InNewSpace(Register object, |
| 225 | Register scratch, |
| 226 | Condition cc, |
| 227 | Label* branch, |
| 228 | Label::Distance near_jump) { |
| 229 | if (Serializer::enabled()) { |
| 230 | // Can't do arithmetic on external references if it might get serialized. |
| 231 | // The mask isn't really an address. We load it as an external reference in |
| 232 | // case the size of the new space is different between the snapshot maker |
| 233 | // and the running system. |
| 234 | if (scratch.is(object)) { |
| 235 | movq(kScratchRegister, ExternalReference::new_space_mask(isolate())); |
| 236 | and_(scratch, kScratchRegister); |
| 237 | } else { |
| 238 | movq(scratch, ExternalReference::new_space_mask(isolate())); |
| 239 | and_(scratch, object); |
| 240 | } |
| 241 | movq(kScratchRegister, ExternalReference::new_space_start(isolate())); |
| 242 | cmpq(scratch, kScratchRegister); |
| 243 | j(cc, branch, near_jump); |
| 244 | } else { |
| 245 | ASSERT(is_int32(static_cast<int64_t>(HEAP->NewSpaceMask()))); |
| 246 | intptr_t new_space_start = |
| 247 | reinterpret_cast<intptr_t>(HEAP->NewSpaceStart()); |
| 248 | movq(kScratchRegister, -new_space_start, RelocInfo::NONE); |
| 249 | if (scratch.is(object)) { |
| 250 | addq(scratch, kScratchRegister); |
| 251 | } else { |
| 252 | lea(scratch, Operand(object, kScratchRegister, times_1, 0)); |
| 253 | } |
| 254 | and_(scratch, Immediate(static_cast<int32_t>(HEAP->NewSpaceMask()))); |
| 255 | j(cc, branch, near_jump); |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 260 | void MacroAssembler::RecordWrite(Register object, |
| 261 | int offset, |
| 262 | Register value, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 263 | Register index) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 264 | // The compiled code assumes that record write doesn't change the |
| 265 | // context register, so we check that none of the clobbered |
| 266 | // registers are rsi. |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 267 | ASSERT(!object.is(rsi) && !value.is(rsi) && !index.is(rsi)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 268 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 269 | // First, check if a write barrier is even needed. The tests below |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 270 | // catch stores of smis and stores into the young generation. |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 271 | Label done; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 272 | JumpIfSmi(value, &done); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 273 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 274 | RecordWriteNonSmi(object, offset, value, index); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 275 | bind(&done); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 276 | |
| 277 | // Clobber all input registers when running with the debug-code flag |
| 278 | // turned on to provoke errors. This clobbering repeats the |
| 279 | // clobbering done inside RecordWriteNonSmi but it's necessary to |
| 280 | // avoid having the fast case for smis leave the registers |
| 281 | // unchanged. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 282 | if (emit_debug_code()) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 283 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 284 | movq(value, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 285 | movq(index, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 286 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 290 | void MacroAssembler::RecordWrite(Register object, |
| 291 | Register address, |
| 292 | Register value) { |
| 293 | // The compiled code assumes that record write doesn't change the |
| 294 | // context register, so we check that none of the clobbered |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 295 | // registers are rsi. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 296 | ASSERT(!object.is(rsi) && !value.is(rsi) && !address.is(rsi)); |
| 297 | |
| 298 | // First, check if a write barrier is even needed. The tests below |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 299 | // catch stores of smis and stores into the young generation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 300 | Label done; |
| 301 | JumpIfSmi(value, &done); |
| 302 | |
| 303 | InNewSpace(object, value, equal, &done); |
| 304 | |
| 305 | RecordWriteHelper(object, address, value); |
| 306 | |
| 307 | bind(&done); |
| 308 | |
| 309 | // Clobber all input registers when running with the debug-code flag |
| 310 | // turned on to provoke errors. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 311 | if (emit_debug_code()) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 312 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 313 | movq(address, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 314 | movq(value, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 319 | void MacroAssembler::RecordWriteNonSmi(Register object, |
| 320 | int offset, |
| 321 | Register scratch, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 322 | Register index) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 323 | Label done; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 324 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 325 | if (emit_debug_code()) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 326 | Label okay; |
| 327 | JumpIfNotSmi(object, &okay, Label::kNear); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 328 | Abort("MacroAssembler::RecordWriteNonSmi cannot deal with smis"); |
| 329 | bind(&okay); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 330 | |
| 331 | if (offset == 0) { |
| 332 | // index must be int32. |
| 333 | Register tmp = index.is(rax) ? rbx : rax; |
| 334 | push(tmp); |
| 335 | movl(tmp, index); |
| 336 | cmpq(tmp, index); |
| 337 | Check(equal, "Index register for RecordWrite must be untagged int32."); |
| 338 | pop(tmp); |
| 339 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 340 | } |
| 341 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 342 | // Test that the object address is not in the new space. We cannot |
| 343 | // update page dirty marks for new space pages. |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 344 | InNewSpace(object, scratch, equal, &done); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 345 | |
whesse@chromium.org | e88a9ed | 2010-04-15 15:07:46 +0000 | [diff] [blame] | 346 | // The offset is relative to a tagged or untagged HeapObject pointer, |
| 347 | // so either offset or offset + kHeapObjectTag must be a |
| 348 | // multiple of kPointerSize. |
| 349 | ASSERT(IsAligned(offset, kPointerSize) || |
| 350 | IsAligned(offset + kHeapObjectTag, kPointerSize)); |
| 351 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 352 | Register dst = index; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 353 | if (offset != 0) { |
| 354 | lea(dst, Operand(object, offset)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 355 | } else { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 356 | // array access: calculate the destination address in the same manner as |
| 357 | // KeyedStoreIC::GenerateGeneric. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 358 | lea(dst, FieldOperand(object, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 359 | index, |
| 360 | times_pointer_size, |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 361 | FixedArray::kHeaderSize)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 362 | } |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 363 | RecordWriteHelper(object, dst, scratch); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 364 | |
| 365 | bind(&done); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 366 | |
| 367 | // Clobber all input registers when running with the debug-code flag |
| 368 | // turned on to provoke errors. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 369 | if (emit_debug_code()) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 370 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 371 | movq(scratch, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 372 | movq(index, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 373 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 374 | } |
| 375 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 376 | void MacroAssembler::Assert(Condition cc, const char* msg) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 377 | if (emit_debug_code()) Check(cc, msg); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 381 | void MacroAssembler::AssertFastElements(Register elements) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 382 | if (emit_debug_code()) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 383 | Label ok; |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 384 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 385 | Heap::kFixedArrayMapRootIndex); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 386 | j(equal, &ok, Label::kNear); |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 387 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame^] | 388 | Heap::kFixedDoubleArrayMapRootIndex); |
| 389 | j(equal, &ok, Label::kNear); |
| 390 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 391 | Heap::kFixedCOWArrayMapRootIndex); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 392 | j(equal, &ok, Label::kNear); |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 393 | Abort("JSObject with fast elements map has slow elements"); |
| 394 | bind(&ok); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 399 | void MacroAssembler::Check(Condition cc, const char* msg) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 400 | Label L; |
| 401 | j(cc, &L, Label::kNear); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 402 | Abort(msg); |
| 403 | // will not return here |
| 404 | bind(&L); |
| 405 | } |
| 406 | |
| 407 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 408 | void MacroAssembler::CheckStackAlignment() { |
| 409 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 410 | int frame_alignment_mask = frame_alignment - 1; |
| 411 | if (frame_alignment > kPointerSize) { |
| 412 | ASSERT(IsPowerOf2(frame_alignment)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 413 | Label alignment_as_expected; |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 414 | testq(rsp, Immediate(frame_alignment_mask)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 415 | j(zero, &alignment_as_expected, Label::kNear); |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 416 | // Abort if stack is not aligned. |
| 417 | int3(); |
| 418 | bind(&alignment_as_expected); |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 423 | void MacroAssembler::NegativeZeroTest(Register result, |
| 424 | Register op, |
| 425 | Label* then_label) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 426 | Label ok; |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 427 | testl(result, result); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 428 | j(not_zero, &ok, Label::kNear); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 429 | testl(op, op); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 430 | j(sign, then_label); |
| 431 | bind(&ok); |
| 432 | } |
| 433 | |
| 434 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 435 | void MacroAssembler::Abort(const char* msg) { |
| 436 | // We want to pass the msg string like a smi to avoid GC |
| 437 | // problems, however msg is not guaranteed to be aligned |
| 438 | // properly. Instead, we pass an aligned pointer that is |
| 439 | // a proper v8 smi, but also pass the alignment difference |
| 440 | // from the real pointer as a smi. |
| 441 | intptr_t p1 = reinterpret_cast<intptr_t>(msg); |
| 442 | intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; |
| 443 | // Note: p0 might not be a valid Smi *value*, but it has a valid Smi tag. |
| 444 | ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); |
| 445 | #ifdef DEBUG |
| 446 | if (msg != NULL) { |
| 447 | RecordComment("Abort message: "); |
| 448 | RecordComment(msg); |
| 449 | } |
| 450 | #endif |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 451 | // Disable stub call restrictions to always allow calls to abort. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 452 | AllowStubCallsScope allow_scope(this, true); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 453 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 454 | push(rax); |
| 455 | movq(kScratchRegister, p0, RelocInfo::NONE); |
| 456 | push(kScratchRegister); |
| 457 | movq(kScratchRegister, |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 458 | reinterpret_cast<intptr_t>(Smi::FromInt(static_cast<int>(p1 - p0))), |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 459 | RelocInfo::NONE); |
| 460 | push(kScratchRegister); |
| 461 | CallRuntime(Runtime::kAbort, 2); |
| 462 | // will not return here |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 463 | int3(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 464 | } |
| 465 | |
| 466 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 467 | void MacroAssembler::CallStub(CodeStub* stub, unsigned ast_id) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 468 | ASSERT(allow_stub_calls()); // calls are not allowed in some stubs |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 469 | Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 470 | } |
| 471 | |
| 472 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 473 | MaybeObject* MacroAssembler::TryCallStub(CodeStub* stub) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 474 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 475 | MaybeObject* result = stub->TryGetCode(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 476 | if (!result->IsFailure()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 477 | call(Handle<Code>(Code::cast(result->ToObjectUnchecked())), |
| 478 | RelocInfo::CODE_TARGET); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 479 | } |
| 480 | return result; |
| 481 | } |
| 482 | |
| 483 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 484 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 485 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 486 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 487 | } |
| 488 | |
| 489 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 490 | MaybeObject* MacroAssembler::TryTailCallStub(CodeStub* stub) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 491 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 492 | MaybeObject* result = stub->TryGetCode(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 493 | if (!result->IsFailure()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 494 | jmp(Handle<Code>(Code::cast(result->ToObjectUnchecked())), |
| 495 | RelocInfo::CODE_TARGET); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 496 | } |
| 497 | return result; |
| 498 | } |
| 499 | |
| 500 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 501 | void MacroAssembler::StubReturn(int argc) { |
| 502 | ASSERT(argc >= 1 && generating_stub()); |
| 503 | ret((argc - 1) * kPointerSize); |
| 504 | } |
| 505 | |
| 506 | |
| 507 | void MacroAssembler::IllegalOperation(int num_arguments) { |
| 508 | if (num_arguments > 0) { |
| 509 | addq(rsp, Immediate(num_arguments * kPointerSize)); |
| 510 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 511 | LoadRoot(rax, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 512 | } |
| 513 | |
| 514 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 515 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
| 516 | // The assert checks that the constants for the maximum number of digits |
| 517 | // for an array index cached in the hash field and the number of bits |
| 518 | // reserved for it does not conflict. |
| 519 | ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < |
| 520 | (1 << String::kArrayIndexValueBits)); |
| 521 | // We want the smi-tagged index in key. Even if we subsequently go to |
| 522 | // the slow case, converting the key to a smi is always valid. |
| 523 | // key: string key |
| 524 | // hash: key's hash field, including its array index value. |
| 525 | and_(hash, Immediate(String::kArrayIndexValueMask)); |
| 526 | shr(hash, Immediate(String::kHashShift)); |
| 527 | // Here we actually clobber the key which will be used if calling into |
| 528 | // runtime later. However as the new key is the numeric value of a string key |
| 529 | // there is no difference in using either key. |
| 530 | Integer32ToSmi(index, hash); |
| 531 | } |
| 532 | |
| 533 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 534 | void MacroAssembler::CallRuntime(Runtime::FunctionId id, int num_arguments) { |
| 535 | CallRuntime(Runtime::FunctionForId(id), num_arguments); |
| 536 | } |
| 537 | |
| 538 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 539 | void MacroAssembler::CallRuntimeSaveDoubles(Runtime::FunctionId id) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 540 | const Runtime::Function* function = Runtime::FunctionForId(id); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 541 | Set(rax, function->nargs); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 542 | LoadAddress(rbx, ExternalReference(function, isolate())); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 543 | CEntryStub ces(1); |
| 544 | ces.SaveDoubles(); |
| 545 | CallStub(&ces); |
| 546 | } |
| 547 | |
| 548 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 549 | MaybeObject* MacroAssembler::TryCallRuntime(Runtime::FunctionId id, |
| 550 | int num_arguments) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 551 | return TryCallRuntime(Runtime::FunctionForId(id), num_arguments); |
| 552 | } |
| 553 | |
| 554 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 555 | void MacroAssembler::CallRuntime(const Runtime::Function* f, |
| 556 | int num_arguments) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 557 | // If the expected number of arguments of the runtime function is |
| 558 | // constant, we check that the actual number of arguments match the |
| 559 | // expectation. |
| 560 | if (f->nargs >= 0 && f->nargs != num_arguments) { |
| 561 | IllegalOperation(num_arguments); |
| 562 | return; |
| 563 | } |
| 564 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 565 | // TODO(1236192): Most runtime routines don't need the number of |
| 566 | // arguments passed in because it is constant. At some point we |
| 567 | // should remove this need and make the runtime routine entry code |
| 568 | // smarter. |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 569 | Set(rax, num_arguments); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 570 | LoadAddress(rbx, ExternalReference(f, isolate())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 571 | CEntryStub ces(f->result_size); |
| 572 | CallStub(&ces); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 576 | MaybeObject* MacroAssembler::TryCallRuntime(const Runtime::Function* f, |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 577 | int num_arguments) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 578 | if (f->nargs >= 0 && f->nargs != num_arguments) { |
| 579 | IllegalOperation(num_arguments); |
| 580 | // Since we did not call the stub, there was no allocation failure. |
| 581 | // Return some non-failure object. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 582 | return HEAP->undefined_value(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | // TODO(1236192): Most runtime routines don't need the number of |
| 586 | // arguments passed in because it is constant. At some point we |
| 587 | // should remove this need and make the runtime routine entry code |
| 588 | // smarter. |
| 589 | Set(rax, num_arguments); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 590 | LoadAddress(rbx, ExternalReference(f, isolate())); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 591 | CEntryStub ces(f->result_size); |
| 592 | return TryCallStub(&ces); |
| 593 | } |
| 594 | |
| 595 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 596 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
| 597 | int num_arguments) { |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 598 | Set(rax, num_arguments); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 599 | LoadAddress(rbx, ext); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 600 | |
| 601 | CEntryStub stub(1); |
| 602 | CallStub(&stub); |
| 603 | } |
| 604 | |
| 605 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 606 | void MacroAssembler::TailCallExternalReference(const ExternalReference& ext, |
| 607 | int num_arguments, |
| 608 | int result_size) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 609 | // ----------- S t a t e ------------- |
| 610 | // -- rsp[0] : return address |
| 611 | // -- rsp[8] : argument num_arguments - 1 |
| 612 | // ... |
| 613 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
| 614 | // ----------------------------------- |
| 615 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 616 | // TODO(1236192): Most runtime routines don't need the number of |
| 617 | // arguments passed in because it is constant. At some point we |
| 618 | // should remove this need and make the runtime routine entry code |
| 619 | // smarter. |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 620 | Set(rax, num_arguments); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 621 | JumpToExternalReference(ext, result_size); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 625 | MaybeObject* MacroAssembler::TryTailCallExternalReference( |
| 626 | const ExternalReference& ext, int num_arguments, int result_size) { |
| 627 | // ----------- S t a t e ------------- |
| 628 | // -- rsp[0] : return address |
| 629 | // -- rsp[8] : argument num_arguments - 1 |
| 630 | // ... |
| 631 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
| 632 | // ----------------------------------- |
| 633 | |
| 634 | // TODO(1236192): Most runtime routines don't need the number of |
| 635 | // arguments passed in because it is constant. At some point we |
| 636 | // should remove this need and make the runtime routine entry code |
| 637 | // smarter. |
| 638 | Set(rax, num_arguments); |
| 639 | return TryJumpToExternalReference(ext, result_size); |
| 640 | } |
| 641 | |
| 642 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 643 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, |
| 644 | int num_arguments, |
| 645 | int result_size) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 646 | TailCallExternalReference(ExternalReference(fid, isolate()), |
| 647 | num_arguments, |
| 648 | result_size); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 649 | } |
| 650 | |
| 651 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 652 | MaybeObject* MacroAssembler::TryTailCallRuntime(Runtime::FunctionId fid, |
| 653 | int num_arguments, |
| 654 | int result_size) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 655 | return TryTailCallExternalReference(ExternalReference(fid, isolate()), |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 656 | num_arguments, |
| 657 | result_size); |
| 658 | } |
| 659 | |
| 660 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 661 | static int Offset(ExternalReference ref0, ExternalReference ref1) { |
| 662 | int64_t offset = (ref0.address() - ref1.address()); |
| 663 | // Check that fits into int. |
| 664 | ASSERT(static_cast<int>(offset) == offset); |
| 665 | return static_cast<int>(offset); |
| 666 | } |
| 667 | |
| 668 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 669 | void MacroAssembler::PrepareCallApiFunction(int arg_stack_space) { |
| 670 | #ifdef _WIN64 |
| 671 | // We need to prepare a slot for result handle on stack and put |
| 672 | // a pointer to it into 1st arg register. |
| 673 | EnterApiExitFrame(arg_stack_space + 1); |
| 674 | |
| 675 | // rcx must be used to pass the pointer to the return value slot. |
| 676 | lea(rcx, StackSpaceOperand(arg_stack_space)); |
| 677 | #else |
| 678 | EnterApiExitFrame(arg_stack_space); |
| 679 | #endif |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 680 | } |
| 681 | |
| 682 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 683 | MaybeObject* MacroAssembler::TryCallApiFunctionAndReturn( |
| 684 | ApiFunction* function, int stack_space) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 685 | Label empty_result; |
| 686 | Label prologue; |
| 687 | Label promote_scheduled_exception; |
| 688 | Label delete_allocated_handles; |
| 689 | Label leave_exit_frame; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 690 | Label write_back; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 691 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 692 | Factory* factory = isolate()->factory(); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 693 | ExternalReference next_address = |
| 694 | ExternalReference::handle_scope_next_address(); |
| 695 | const int kNextOffset = 0; |
| 696 | const int kLimitOffset = Offset( |
| 697 | ExternalReference::handle_scope_limit_address(), |
| 698 | next_address); |
| 699 | const int kLevelOffset = Offset( |
| 700 | ExternalReference::handle_scope_level_address(), |
| 701 | next_address); |
| 702 | ExternalReference scheduled_exception_address = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 703 | ExternalReference::scheduled_exception_address(isolate()); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 704 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 705 | // Allocate HandleScope in callee-save registers. |
| 706 | Register prev_next_address_reg = r14; |
| 707 | Register prev_limit_reg = rbx; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 708 | Register base_reg = r15; |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 709 | movq(base_reg, next_address); |
| 710 | movq(prev_next_address_reg, Operand(base_reg, kNextOffset)); |
| 711 | movq(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 712 | addl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 713 | // Call the api function! |
| 714 | movq(rax, |
| 715 | reinterpret_cast<int64_t>(function->address()), |
| 716 | RelocInfo::RUNTIME_ENTRY); |
| 717 | call(rax); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 718 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 719 | #ifdef _WIN64 |
| 720 | // rax keeps a pointer to v8::Handle, unpack it. |
| 721 | movq(rax, Operand(rax, 0)); |
| 722 | #endif |
| 723 | // Check if the result handle holds 0. |
| 724 | testq(rax, rax); |
| 725 | j(zero, &empty_result); |
| 726 | // It was non-zero. Dereference to get the result value. |
| 727 | movq(rax, Operand(rax, 0)); |
| 728 | bind(&prologue); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 729 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 730 | // No more valid handles (the result handle was the last one). Restore |
| 731 | // previous handle scope. |
| 732 | subl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 733 | movq(Operand(base_reg, kNextOffset), prev_next_address_reg); |
| 734 | cmpq(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 735 | j(not_equal, &delete_allocated_handles); |
| 736 | bind(&leave_exit_frame); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 737 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 738 | // Check if the function scheduled an exception. |
| 739 | movq(rsi, scheduled_exception_address); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 740 | Cmp(Operand(rsi, 0), factory->the_hole_value()); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 741 | j(not_equal, &promote_scheduled_exception); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 742 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 743 | LeaveApiExitFrame(); |
| 744 | ret(stack_space * kPointerSize); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 745 | |
| 746 | bind(&promote_scheduled_exception); |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 747 | MaybeObject* result = TryTailCallRuntime(Runtime::kPromoteScheduledException, |
| 748 | 0, 1); |
| 749 | if (result->IsFailure()) { |
| 750 | return result; |
| 751 | } |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 752 | |
| 753 | bind(&empty_result); |
| 754 | // It was zero; the result is undefined. |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 755 | Move(rax, factory->undefined_value()); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 756 | jmp(&prologue); |
| 757 | |
| 758 | // HandleScope limit has changed. Delete allocated extensions. |
| 759 | bind(&delete_allocated_handles); |
| 760 | movq(Operand(base_reg, kLimitOffset), prev_limit_reg); |
| 761 | movq(prev_limit_reg, rax); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 762 | #ifdef _WIN64 |
| 763 | LoadAddress(rcx, ExternalReference::isolate_address()); |
| 764 | #else |
| 765 | LoadAddress(rdi, ExternalReference::isolate_address()); |
| 766 | #endif |
| 767 | LoadAddress(rax, |
| 768 | ExternalReference::delete_handle_scope_extensions(isolate())); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 769 | call(rax); |
| 770 | movq(rax, prev_limit_reg); |
| 771 | jmp(&leave_exit_frame); |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 772 | |
| 773 | return result; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 774 | } |
| 775 | |
| 776 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 777 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext, |
| 778 | int result_size) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 779 | // Set the entry point and jump to the C entry runtime stub. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 780 | LoadAddress(rbx, ext); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 781 | CEntryStub ces(result_size); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 782 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 783 | } |
| 784 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 785 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 786 | MaybeObject* MacroAssembler::TryJumpToExternalReference( |
| 787 | const ExternalReference& ext, int result_size) { |
| 788 | // Set the entry point and jump to the C entry runtime stub. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 789 | LoadAddress(rbx, ext); |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 790 | CEntryStub ces(result_size); |
| 791 | return TryTailCallStub(&ces); |
| 792 | } |
| 793 | |
| 794 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 795 | void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, |
| 796 | InvokeFlag flag, |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 797 | const CallWrapper& call_wrapper) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 798 | // Calls are not allowed in some stubs. |
| 799 | ASSERT(flag == JUMP_FUNCTION || allow_stub_calls()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 800 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 801 | // Rely on the assertion to check that the number of provided |
| 802 | // arguments match the expected number of arguments. Fake a |
| 803 | // parameter count to avoid emitting code to do the check. |
| 804 | ParameterCount expected(0); |
| 805 | GetBuiltinEntry(rdx, id); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 806 | InvokeCode(rdx, expected, expected, flag, call_wrapper, CALL_AS_METHOD); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 807 | } |
| 808 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 809 | |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 810 | void MacroAssembler::GetBuiltinFunction(Register target, |
| 811 | Builtins::JavaScript id) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 812 | // Load the builtins object into target register. |
| 813 | movq(target, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 814 | movq(target, FieldOperand(target, GlobalObject::kBuiltinsOffset)); |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 815 | movq(target, FieldOperand(target, |
| 816 | JSBuiltinsObject::OffsetOfFunctionWithId(id))); |
| 817 | } |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 818 | |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 819 | |
| 820 | void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { |
| 821 | ASSERT(!target.is(rdi)); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 822 | // Load the JavaScript builtin function from the builtins object. |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 823 | GetBuiltinFunction(rdi, id); |
| 824 | movq(target, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 828 | void MacroAssembler::Set(Register dst, int64_t x) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 829 | if (x == 0) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 830 | xorl(dst, dst); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 831 | } else if (is_uint32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 832 | movl(dst, Immediate(static_cast<uint32_t>(x))); |
ager@chromium.org | a9aa5fa | 2011-04-13 08:46:07 +0000 | [diff] [blame] | 833 | } else if (is_int32(x)) { |
| 834 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 835 | } else { |
| 836 | movq(dst, x, RelocInfo::NONE); |
| 837 | } |
| 838 | } |
| 839 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 840 | void MacroAssembler::Set(const Operand& dst, int64_t x) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 841 | if (is_int32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 842 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 843 | } else { |
ager@chromium.org | a9aa5fa | 2011-04-13 08:46:07 +0000 | [diff] [blame] | 844 | Set(kScratchRegister, x); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 845 | movq(dst, kScratchRegister); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 846 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 847 | } |
| 848 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 849 | // ---------------------------------------------------------------------------- |
| 850 | // Smi tagging, untagging and tag detection. |
| 851 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 852 | Register MacroAssembler::GetSmiConstant(Smi* source) { |
| 853 | int value = source->value(); |
| 854 | if (value == 0) { |
| 855 | xorl(kScratchRegister, kScratchRegister); |
| 856 | return kScratchRegister; |
| 857 | } |
| 858 | if (value == 1) { |
| 859 | return kSmiConstantRegister; |
| 860 | } |
| 861 | LoadSmiConstant(kScratchRegister, source); |
| 862 | return kScratchRegister; |
| 863 | } |
| 864 | |
| 865 | void MacroAssembler::LoadSmiConstant(Register dst, Smi* source) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 866 | if (emit_debug_code()) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 867 | movq(dst, |
| 868 | reinterpret_cast<uint64_t>(Smi::FromInt(kSmiConstantRegisterValue)), |
| 869 | RelocInfo::NONE); |
| 870 | cmpq(dst, kSmiConstantRegister); |
| 871 | if (allow_stub_calls()) { |
| 872 | Assert(equal, "Uninitialized kSmiConstantRegister"); |
| 873 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 874 | Label ok; |
| 875 | j(equal, &ok, Label::kNear); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 876 | int3(); |
| 877 | bind(&ok); |
| 878 | } |
| 879 | } |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 880 | int value = source->value(); |
| 881 | if (value == 0) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 882 | xorl(dst, dst); |
| 883 | return; |
| 884 | } |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 885 | bool negative = value < 0; |
| 886 | unsigned int uvalue = negative ? -value : value; |
| 887 | |
| 888 | switch (uvalue) { |
| 889 | case 9: |
| 890 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_8, 0)); |
| 891 | break; |
| 892 | case 8: |
| 893 | xorl(dst, dst); |
| 894 | lea(dst, Operand(dst, kSmiConstantRegister, times_8, 0)); |
| 895 | break; |
| 896 | case 4: |
| 897 | xorl(dst, dst); |
| 898 | lea(dst, Operand(dst, kSmiConstantRegister, times_4, 0)); |
| 899 | break; |
| 900 | case 5: |
| 901 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_4, 0)); |
| 902 | break; |
| 903 | case 3: |
| 904 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_2, 0)); |
| 905 | break; |
| 906 | case 2: |
| 907 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_1, 0)); |
| 908 | break; |
| 909 | case 1: |
| 910 | movq(dst, kSmiConstantRegister); |
| 911 | break; |
| 912 | case 0: |
| 913 | UNREACHABLE(); |
| 914 | return; |
| 915 | default: |
| 916 | movq(dst, reinterpret_cast<uint64_t>(source), RelocInfo::NONE); |
| 917 | return; |
| 918 | } |
| 919 | if (negative) { |
| 920 | neg(dst); |
| 921 | } |
| 922 | } |
| 923 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 924 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 925 | void MacroAssembler::Integer32ToSmi(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 926 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 927 | if (!dst.is(src)) { |
| 928 | movl(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 929 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 930 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 931 | } |
| 932 | |
| 933 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 934 | void MacroAssembler::Integer32ToSmiField(const Operand& dst, Register src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 935 | if (emit_debug_code()) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 936 | testb(dst, Immediate(0x01)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 937 | Label ok; |
| 938 | j(zero, &ok, Label::kNear); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 939 | if (allow_stub_calls()) { |
| 940 | Abort("Integer32ToSmiField writing to non-smi location"); |
| 941 | } else { |
| 942 | int3(); |
| 943 | } |
| 944 | bind(&ok); |
| 945 | } |
| 946 | ASSERT(kSmiShift % kBitsPerByte == 0); |
| 947 | movl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 948 | } |
| 949 | |
| 950 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 951 | void MacroAssembler::Integer64PlusConstantToSmi(Register dst, |
| 952 | Register src, |
| 953 | int constant) { |
| 954 | if (dst.is(src)) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 955 | addl(dst, Immediate(constant)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 956 | } else { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 957 | leal(dst, Operand(src, constant)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 958 | } |
| 959 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | |
| 963 | void MacroAssembler::SmiToInteger32(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 964 | ASSERT_EQ(0, kSmiTag); |
| 965 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 966 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 967 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 968 | shr(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 969 | } |
| 970 | |
| 971 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 972 | void MacroAssembler::SmiToInteger32(Register dst, const Operand& src) { |
| 973 | movl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 974 | } |
| 975 | |
| 976 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 977 | void MacroAssembler::SmiToInteger64(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 978 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 979 | if (!dst.is(src)) { |
| 980 | movq(dst, src); |
| 981 | } |
| 982 | sar(dst, Immediate(kSmiShift)); |
| 983 | } |
| 984 | |
| 985 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 986 | void MacroAssembler::SmiToInteger64(Register dst, const Operand& src) { |
| 987 | movsxlq(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 988 | } |
| 989 | |
| 990 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 991 | void MacroAssembler::SmiTest(Register src) { |
| 992 | testq(src, src); |
| 993 | } |
| 994 | |
| 995 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 996 | void MacroAssembler::SmiCompare(Register smi1, Register smi2) { |
| 997 | if (emit_debug_code()) { |
| 998 | AbortIfNotSmi(smi1); |
| 999 | AbortIfNotSmi(smi2); |
| 1000 | } |
| 1001 | cmpq(smi1, smi2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1002 | } |
| 1003 | |
| 1004 | |
| 1005 | void MacroAssembler::SmiCompare(Register dst, Smi* src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1006 | if (emit_debug_code()) { |
| 1007 | AbortIfNotSmi(dst); |
| 1008 | } |
| 1009 | Cmp(dst, src); |
| 1010 | } |
| 1011 | |
| 1012 | |
| 1013 | void MacroAssembler::Cmp(Register dst, Smi* src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1014 | ASSERT(!dst.is(kScratchRegister)); |
| 1015 | if (src->value() == 0) { |
| 1016 | testq(dst, dst); |
| 1017 | } else { |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 1018 | Register constant_reg = GetSmiConstant(src); |
| 1019 | cmpq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1020 | } |
| 1021 | } |
| 1022 | |
| 1023 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 1024 | void MacroAssembler::SmiCompare(Register dst, const Operand& src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1025 | if (emit_debug_code()) { |
| 1026 | AbortIfNotSmi(dst); |
| 1027 | AbortIfNotSmi(src); |
| 1028 | } |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1029 | cmpq(dst, src); |
| 1030 | } |
| 1031 | |
| 1032 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1033 | void MacroAssembler::SmiCompare(const Operand& dst, Register src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1034 | if (emit_debug_code()) { |
| 1035 | AbortIfNotSmi(dst); |
| 1036 | AbortIfNotSmi(src); |
| 1037 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1038 | cmpq(dst, src); |
| 1039 | } |
| 1040 | |
| 1041 | |
| 1042 | void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1043 | if (emit_debug_code()) { |
| 1044 | AbortIfNotSmi(dst); |
| 1045 | } |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1046 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value())); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
| 1049 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1050 | void MacroAssembler::Cmp(const Operand& dst, Smi* src) { |
| 1051 | // The Operand cannot use the smi register. |
| 1052 | Register smi_reg = GetSmiConstant(src); |
| 1053 | ASSERT(!dst.AddressUsesRegister(smi_reg)); |
| 1054 | cmpq(dst, smi_reg); |
| 1055 | } |
| 1056 | |
| 1057 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1058 | void MacroAssembler::SmiCompareInteger32(const Operand& dst, Register src) { |
| 1059 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1060 | } |
| 1061 | |
| 1062 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1063 | void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst, |
| 1064 | Register src, |
| 1065 | int power) { |
| 1066 | ASSERT(power >= 0); |
| 1067 | ASSERT(power < 64); |
| 1068 | if (power == 0) { |
| 1069 | SmiToInteger64(dst, src); |
| 1070 | return; |
| 1071 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1072 | if (!dst.is(src)) { |
| 1073 | movq(dst, src); |
| 1074 | } |
| 1075 | if (power < kSmiShift) { |
| 1076 | sar(dst, Immediate(kSmiShift - power)); |
| 1077 | } else if (power > kSmiShift) { |
| 1078 | shl(dst, Immediate(power - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1079 | } |
| 1080 | } |
| 1081 | |
| 1082 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1083 | void MacroAssembler::PositiveSmiDivPowerOfTwoToInteger32(Register dst, |
| 1084 | Register src, |
| 1085 | int power) { |
| 1086 | ASSERT((0 <= power) && (power < 32)); |
| 1087 | if (dst.is(src)) { |
| 1088 | shr(dst, Immediate(power + kSmiShift)); |
| 1089 | } else { |
| 1090 | UNIMPLEMENTED(); // Not used. |
| 1091 | } |
| 1092 | } |
| 1093 | |
| 1094 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1095 | void MacroAssembler::SmiOrIfSmis(Register dst, Register src1, Register src2, |
| 1096 | Label* on_not_smis, |
| 1097 | Label::Distance near_jump) { |
| 1098 | if (dst.is(src1) || dst.is(src2)) { |
| 1099 | ASSERT(!src1.is(kScratchRegister)); |
| 1100 | ASSERT(!src2.is(kScratchRegister)); |
| 1101 | movq(kScratchRegister, src1); |
| 1102 | or_(kScratchRegister, src2); |
| 1103 | JumpIfNotSmi(kScratchRegister, on_not_smis, near_jump); |
| 1104 | movq(dst, kScratchRegister); |
| 1105 | } else { |
| 1106 | movq(dst, src1); |
| 1107 | or_(dst, src2); |
| 1108 | JumpIfNotSmi(dst, on_not_smis, near_jump); |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1113 | Condition MacroAssembler::CheckSmi(Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1114 | ASSERT_EQ(0, kSmiTag); |
| 1115 | testb(src, Immediate(kSmiTagMask)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1116 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1120 | Condition MacroAssembler::CheckSmi(const Operand& src) { |
| 1121 | ASSERT_EQ(0, kSmiTag); |
| 1122 | testb(src, Immediate(kSmiTagMask)); |
| 1123 | return zero; |
| 1124 | } |
| 1125 | |
| 1126 | |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1127 | Condition MacroAssembler::CheckNonNegativeSmi(Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1128 | ASSERT_EQ(0, kSmiTag); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1129 | // Test that both bits of the mask 0x8000000000000001 are zero. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1130 | movq(kScratchRegister, src); |
| 1131 | rol(kScratchRegister, Immediate(1)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1132 | testb(kScratchRegister, Immediate(3)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1133 | return zero; |
| 1134 | } |
| 1135 | |
| 1136 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1137 | Condition MacroAssembler::CheckBothSmi(Register first, Register second) { |
| 1138 | if (first.is(second)) { |
| 1139 | return CheckSmi(first); |
| 1140 | } |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 1141 | ASSERT(kSmiTag == 0 && kHeapObjectTag == 1 && kHeapObjectTagMask == 3); |
| 1142 | leal(kScratchRegister, Operand(first, second, times_1, 0)); |
| 1143 | testb(kScratchRegister, Immediate(0x03)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1144 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1148 | Condition MacroAssembler::CheckBothNonNegativeSmi(Register first, |
| 1149 | Register second) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1150 | if (first.is(second)) { |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1151 | return CheckNonNegativeSmi(first); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1152 | } |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1153 | movq(kScratchRegister, first); |
| 1154 | or_(kScratchRegister, second); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1155 | rol(kScratchRegister, Immediate(1)); |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1156 | testl(kScratchRegister, Immediate(3)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1157 | return zero; |
| 1158 | } |
| 1159 | |
| 1160 | |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1161 | Condition MacroAssembler::CheckEitherSmi(Register first, |
| 1162 | Register second, |
| 1163 | Register scratch) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1164 | if (first.is(second)) { |
| 1165 | return CheckSmi(first); |
| 1166 | } |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1167 | if (scratch.is(second)) { |
| 1168 | andl(scratch, first); |
| 1169 | } else { |
| 1170 | if (!scratch.is(first)) { |
| 1171 | movl(scratch, first); |
| 1172 | } |
| 1173 | andl(scratch, second); |
| 1174 | } |
| 1175 | testb(scratch, Immediate(kSmiTagMask)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1176 | return zero; |
| 1177 | } |
| 1178 | |
| 1179 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1180 | Condition MacroAssembler::CheckIsMinSmi(Register src) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1181 | ASSERT(!src.is(kScratchRegister)); |
| 1182 | // If we overflow by subtracting one, it's the minimal smi value. |
| 1183 | cmpq(src, kSmiConstantRegister); |
| 1184 | return overflow; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1185 | } |
| 1186 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1187 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1188 | Condition MacroAssembler::CheckInteger32ValidSmiValue(Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1189 | // A 32-bit integer value can always be converted to a smi. |
| 1190 | return always; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1191 | } |
| 1192 | |
| 1193 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1194 | Condition MacroAssembler::CheckUInteger32ValidSmiValue(Register src) { |
| 1195 | // An unsigned 32-bit integer value is valid as long as the high bit |
| 1196 | // is not set. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1197 | testl(src, src); |
| 1198 | return positive; |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1199 | } |
| 1200 | |
| 1201 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1202 | void MacroAssembler::CheckSmiToIndicator(Register dst, Register src) { |
| 1203 | if (dst.is(src)) { |
| 1204 | andl(dst, Immediate(kSmiTagMask)); |
| 1205 | } else { |
| 1206 | movl(dst, Immediate(kSmiTagMask)); |
| 1207 | andl(dst, src); |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | |
| 1212 | void MacroAssembler::CheckSmiToIndicator(Register dst, const Operand& src) { |
| 1213 | if (!(src.AddressUsesRegister(dst))) { |
| 1214 | movl(dst, Immediate(kSmiTagMask)); |
| 1215 | andl(dst, src); |
| 1216 | } else { |
| 1217 | movl(dst, src); |
| 1218 | andl(dst, Immediate(kSmiTagMask)); |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1223 | void MacroAssembler::JumpIfNotValidSmiValue(Register src, |
| 1224 | Label* on_invalid, |
| 1225 | Label::Distance near_jump) { |
| 1226 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1227 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1228 | } |
| 1229 | |
| 1230 | |
| 1231 | void MacroAssembler::JumpIfUIntNotValidSmiValue(Register src, |
| 1232 | Label* on_invalid, |
| 1233 | Label::Distance near_jump) { |
| 1234 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1235 | j(NegateCondition(is_valid), on_invalid, near_jump); |
| 1236 | } |
| 1237 | |
| 1238 | |
| 1239 | void MacroAssembler::JumpIfSmi(Register src, |
| 1240 | Label* on_smi, |
| 1241 | Label::Distance near_jump) { |
| 1242 | Condition smi = CheckSmi(src); |
| 1243 | j(smi, on_smi, near_jump); |
| 1244 | } |
| 1245 | |
| 1246 | |
| 1247 | void MacroAssembler::JumpIfNotSmi(Register src, |
| 1248 | Label* on_not_smi, |
| 1249 | Label::Distance near_jump) { |
| 1250 | Condition smi = CheckSmi(src); |
| 1251 | j(NegateCondition(smi), on_not_smi, near_jump); |
| 1252 | } |
| 1253 | |
| 1254 | |
| 1255 | void MacroAssembler::JumpUnlessNonNegativeSmi( |
| 1256 | Register src, Label* on_not_smi_or_negative, |
| 1257 | Label::Distance near_jump) { |
| 1258 | Condition non_negative_smi = CheckNonNegativeSmi(src); |
| 1259 | j(NegateCondition(non_negative_smi), on_not_smi_or_negative, near_jump); |
| 1260 | } |
| 1261 | |
| 1262 | |
| 1263 | void MacroAssembler::JumpIfSmiEqualsConstant(Register src, |
| 1264 | Smi* constant, |
| 1265 | Label* on_equals, |
| 1266 | Label::Distance near_jump) { |
| 1267 | SmiCompare(src, constant); |
| 1268 | j(equal, on_equals, near_jump); |
| 1269 | } |
| 1270 | |
| 1271 | |
| 1272 | void MacroAssembler::JumpIfNotBothSmi(Register src1, |
| 1273 | Register src2, |
| 1274 | Label* on_not_both_smi, |
| 1275 | Label::Distance near_jump) { |
| 1276 | Condition both_smi = CheckBothSmi(src1, src2); |
| 1277 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1278 | } |
| 1279 | |
| 1280 | |
| 1281 | void MacroAssembler::JumpUnlessBothNonNegativeSmi(Register src1, |
| 1282 | Register src2, |
| 1283 | Label* on_not_both_smi, |
| 1284 | Label::Distance near_jump) { |
| 1285 | Condition both_smi = CheckBothNonNegativeSmi(src1, src2); |
| 1286 | j(NegateCondition(both_smi), on_not_both_smi, near_jump); |
| 1287 | } |
| 1288 | |
| 1289 | |
| 1290 | void MacroAssembler::SmiTryAddConstant(Register dst, |
| 1291 | Register src, |
| 1292 | Smi* constant, |
| 1293 | Label* on_not_smi_result, |
| 1294 | Label::Distance near_jump) { |
| 1295 | // Does not assume that src is a smi. |
| 1296 | ASSERT_EQ(static_cast<int>(1), static_cast<int>(kSmiTagMask)); |
| 1297 | ASSERT_EQ(0, kSmiTag); |
| 1298 | ASSERT(!dst.is(kScratchRegister)); |
| 1299 | ASSERT(!src.is(kScratchRegister)); |
| 1300 | |
| 1301 | JumpIfNotSmi(src, on_not_smi_result, near_jump); |
| 1302 | Register tmp = (dst.is(src) ? kScratchRegister : dst); |
| 1303 | LoadSmiConstant(tmp, constant); |
| 1304 | addq(tmp, src); |
| 1305 | j(overflow, on_not_smi_result, near_jump); |
| 1306 | if (dst.is(src)) { |
| 1307 | movq(dst, tmp); |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1312 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) { |
| 1313 | if (constant->value() == 0) { |
| 1314 | if (!dst.is(src)) { |
| 1315 | movq(dst, src); |
| 1316 | } |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1317 | return; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1318 | } else if (dst.is(src)) { |
| 1319 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1320 | switch (constant->value()) { |
| 1321 | case 1: |
| 1322 | addq(dst, kSmiConstantRegister); |
| 1323 | return; |
| 1324 | case 2: |
| 1325 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 1326 | return; |
| 1327 | case 4: |
| 1328 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 1329 | return; |
| 1330 | case 8: |
| 1331 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 1332 | return; |
| 1333 | default: |
| 1334 | Register constant_reg = GetSmiConstant(constant); |
| 1335 | addq(dst, constant_reg); |
| 1336 | return; |
| 1337 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1338 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1339 | switch (constant->value()) { |
| 1340 | case 1: |
| 1341 | lea(dst, Operand(src, kSmiConstantRegister, times_1, 0)); |
| 1342 | return; |
| 1343 | case 2: |
| 1344 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 1345 | return; |
| 1346 | case 4: |
| 1347 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 1348 | return; |
| 1349 | case 8: |
| 1350 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 1351 | return; |
| 1352 | default: |
| 1353 | LoadSmiConstant(dst, constant); |
| 1354 | addq(dst, src); |
| 1355 | return; |
| 1356 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1357 | } |
| 1358 | } |
| 1359 | |
| 1360 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1361 | void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) { |
| 1362 | if (constant->value() != 0) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1363 | addl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(constant->value())); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1364 | } |
| 1365 | } |
| 1366 | |
| 1367 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1368 | void MacroAssembler::SmiAddConstant(Register dst, |
| 1369 | Register src, |
| 1370 | Smi* constant, |
| 1371 | Label* on_not_smi_result, |
| 1372 | Label::Distance near_jump) { |
| 1373 | if (constant->value() == 0) { |
| 1374 | if (!dst.is(src)) { |
| 1375 | movq(dst, src); |
| 1376 | } |
| 1377 | } else if (dst.is(src)) { |
| 1378 | ASSERT(!dst.is(kScratchRegister)); |
| 1379 | |
| 1380 | LoadSmiConstant(kScratchRegister, constant); |
| 1381 | addq(kScratchRegister, src); |
| 1382 | j(overflow, on_not_smi_result, near_jump); |
| 1383 | movq(dst, kScratchRegister); |
| 1384 | } else { |
| 1385 | LoadSmiConstant(dst, constant); |
| 1386 | addq(dst, src); |
| 1387 | j(overflow, on_not_smi_result, near_jump); |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1392 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant) { |
| 1393 | if (constant->value() == 0) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1394 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1395 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1396 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1397 | } else if (dst.is(src)) { |
| 1398 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1399 | Register constant_reg = GetSmiConstant(constant); |
| 1400 | subq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1401 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1402 | if (constant->value() == Smi::kMinValue) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1403 | LoadSmiConstant(dst, constant); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1404 | // Adding and subtracting the min-value gives the same result, it only |
| 1405 | // differs on the overflow bit, which we don't check here. |
| 1406 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1407 | } else { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1408 | // Subtract by adding the negation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1409 | LoadSmiConstant(dst, Smi::FromInt(-constant->value())); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1410 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1411 | } |
| 1412 | } |
| 1413 | } |
| 1414 | |
| 1415 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1416 | void MacroAssembler::SmiSubConstant(Register dst, |
| 1417 | Register src, |
| 1418 | Smi* constant, |
| 1419 | Label* on_not_smi_result, |
| 1420 | Label::Distance near_jump) { |
| 1421 | if (constant->value() == 0) { |
| 1422 | if (!dst.is(src)) { |
| 1423 | movq(dst, src); |
| 1424 | } |
| 1425 | } else if (dst.is(src)) { |
| 1426 | ASSERT(!dst.is(kScratchRegister)); |
| 1427 | if (constant->value() == Smi::kMinValue) { |
| 1428 | // Subtracting min-value from any non-negative value will overflow. |
| 1429 | // We test the non-negativeness before doing the subtraction. |
| 1430 | testq(src, src); |
| 1431 | j(not_sign, on_not_smi_result, near_jump); |
| 1432 | LoadSmiConstant(kScratchRegister, constant); |
| 1433 | subq(dst, kScratchRegister); |
| 1434 | } else { |
| 1435 | // Subtract by adding the negation. |
| 1436 | LoadSmiConstant(kScratchRegister, Smi::FromInt(-constant->value())); |
| 1437 | addq(kScratchRegister, dst); |
| 1438 | j(overflow, on_not_smi_result, near_jump); |
| 1439 | movq(dst, kScratchRegister); |
| 1440 | } |
| 1441 | } else { |
| 1442 | if (constant->value() == Smi::kMinValue) { |
| 1443 | // Subtracting min-value from any non-negative value will overflow. |
| 1444 | // We test the non-negativeness before doing the subtraction. |
| 1445 | testq(src, src); |
| 1446 | j(not_sign, on_not_smi_result, near_jump); |
| 1447 | LoadSmiConstant(dst, constant); |
| 1448 | // Adding and subtracting the min-value gives the same result, it only |
| 1449 | // differs on the overflow bit, which we don't check here. |
| 1450 | addq(dst, src); |
| 1451 | } else { |
| 1452 | // Subtract by adding the negation. |
| 1453 | LoadSmiConstant(dst, Smi::FromInt(-(constant->value()))); |
| 1454 | addq(dst, src); |
| 1455 | j(overflow, on_not_smi_result, near_jump); |
| 1456 | } |
| 1457 | } |
| 1458 | } |
| 1459 | |
| 1460 | |
| 1461 | void MacroAssembler::SmiNeg(Register dst, |
| 1462 | Register src, |
| 1463 | Label* on_smi_result, |
| 1464 | Label::Distance near_jump) { |
| 1465 | if (dst.is(src)) { |
| 1466 | ASSERT(!dst.is(kScratchRegister)); |
| 1467 | movq(kScratchRegister, src); |
| 1468 | neg(dst); // Low 32 bits are retained as zero by negation. |
| 1469 | // Test if result is zero or Smi::kMinValue. |
| 1470 | cmpq(dst, kScratchRegister); |
| 1471 | j(not_equal, on_smi_result, near_jump); |
| 1472 | movq(src, kScratchRegister); |
| 1473 | } else { |
| 1474 | movq(dst, src); |
| 1475 | neg(dst); |
| 1476 | cmpq(dst, src); |
| 1477 | // If the result is zero or Smi::kMinValue, negation failed to create a smi. |
| 1478 | j(not_equal, on_smi_result, near_jump); |
| 1479 | } |
| 1480 | } |
| 1481 | |
| 1482 | |
| 1483 | void MacroAssembler::SmiAdd(Register dst, |
| 1484 | Register src1, |
| 1485 | Register src2, |
| 1486 | Label* on_not_smi_result, |
| 1487 | Label::Distance near_jump) { |
| 1488 | ASSERT_NOT_NULL(on_not_smi_result); |
| 1489 | ASSERT(!dst.is(src2)); |
| 1490 | if (dst.is(src1)) { |
| 1491 | movq(kScratchRegister, src1); |
| 1492 | addq(kScratchRegister, src2); |
| 1493 | j(overflow, on_not_smi_result, near_jump); |
| 1494 | movq(dst, kScratchRegister); |
| 1495 | } else { |
| 1496 | movq(dst, src1); |
| 1497 | addq(dst, src2); |
| 1498 | j(overflow, on_not_smi_result, near_jump); |
| 1499 | } |
| 1500 | } |
| 1501 | |
| 1502 | |
| 1503 | void MacroAssembler::SmiAdd(Register dst, |
| 1504 | Register src1, |
| 1505 | const Operand& src2, |
| 1506 | Label* on_not_smi_result, |
| 1507 | Label::Distance near_jump) { |
| 1508 | ASSERT_NOT_NULL(on_not_smi_result); |
| 1509 | if (dst.is(src1)) { |
| 1510 | movq(kScratchRegister, src1); |
| 1511 | addq(kScratchRegister, src2); |
| 1512 | j(overflow, on_not_smi_result, near_jump); |
| 1513 | movq(dst, kScratchRegister); |
| 1514 | } else { |
| 1515 | ASSERT(!src2.AddressUsesRegister(dst)); |
| 1516 | movq(dst, src1); |
| 1517 | addq(dst, src2); |
| 1518 | j(overflow, on_not_smi_result, near_jump); |
| 1519 | } |
| 1520 | } |
| 1521 | |
| 1522 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1523 | void MacroAssembler::SmiAdd(Register dst, |
| 1524 | Register src1, |
| 1525 | Register src2) { |
| 1526 | // No overflow checking. Use only when it's known that |
| 1527 | // overflowing is impossible. |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1528 | if (!dst.is(src1)) { |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 1529 | if (emit_debug_code()) { |
| 1530 | movq(kScratchRegister, src1); |
| 1531 | addq(kScratchRegister, src2); |
| 1532 | Check(no_overflow, "Smi addition overflow"); |
| 1533 | } |
| 1534 | lea(dst, Operand(src1, src2, times_1, 0)); |
| 1535 | } else { |
| 1536 | addq(dst, src2); |
| 1537 | Assert(no_overflow, "Smi addition overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1538 | } |
| 1539 | } |
| 1540 | |
| 1541 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1542 | void MacroAssembler::SmiSub(Register dst, |
| 1543 | Register src1, |
| 1544 | Register src2, |
| 1545 | Label* on_not_smi_result, |
| 1546 | Label::Distance near_jump) { |
| 1547 | ASSERT_NOT_NULL(on_not_smi_result); |
| 1548 | ASSERT(!dst.is(src2)); |
| 1549 | if (dst.is(src1)) { |
| 1550 | cmpq(dst, src2); |
| 1551 | j(overflow, on_not_smi_result, near_jump); |
| 1552 | subq(dst, src2); |
| 1553 | } else { |
| 1554 | movq(dst, src1); |
| 1555 | subq(dst, src2); |
| 1556 | j(overflow, on_not_smi_result, near_jump); |
| 1557 | } |
| 1558 | } |
| 1559 | |
| 1560 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1561 | void MacroAssembler::SmiSub(Register dst, Register src1, Register src2) { |
| 1562 | // No overflow checking. Use only when it's known that |
| 1563 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1564 | ASSERT(!dst.is(src2)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1565 | if (!dst.is(src1)) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1566 | movq(dst, src1); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1567 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1568 | subq(dst, src2); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1569 | Assert(no_overflow, "Smi subtraction overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1570 | } |
| 1571 | |
| 1572 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1573 | void MacroAssembler::SmiSub(Register dst, |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1574 | Register src1, |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1575 | const Operand& src2, |
| 1576 | Label* on_not_smi_result, |
| 1577 | Label::Distance near_jump) { |
| 1578 | ASSERT_NOT_NULL(on_not_smi_result); |
| 1579 | if (dst.is(src1)) { |
| 1580 | movq(kScratchRegister, src2); |
| 1581 | cmpq(src1, kScratchRegister); |
| 1582 | j(overflow, on_not_smi_result, near_jump); |
| 1583 | subq(src1, kScratchRegister); |
| 1584 | } else { |
| 1585 | movq(dst, src1); |
| 1586 | subq(dst, src2); |
| 1587 | j(overflow, on_not_smi_result, near_jump); |
| 1588 | } |
| 1589 | } |
| 1590 | |
| 1591 | |
| 1592 | void MacroAssembler::SmiSub(Register dst, |
| 1593 | Register src1, |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1594 | const Operand& src2) { |
| 1595 | // No overflow checking. Use only when it's known that |
| 1596 | // overflowing is impossible (e.g., subtracting two positive smis). |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1597 | if (!dst.is(src1)) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1598 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1599 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1600 | subq(dst, src2); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1601 | Assert(no_overflow, "Smi subtraction overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1602 | } |
| 1603 | |
| 1604 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1605 | void MacroAssembler::SmiMul(Register dst, |
| 1606 | Register src1, |
| 1607 | Register src2, |
| 1608 | Label* on_not_smi_result, |
| 1609 | Label::Distance near_jump) { |
| 1610 | ASSERT(!dst.is(src2)); |
| 1611 | ASSERT(!dst.is(kScratchRegister)); |
| 1612 | ASSERT(!src1.is(kScratchRegister)); |
| 1613 | ASSERT(!src2.is(kScratchRegister)); |
| 1614 | |
| 1615 | if (dst.is(src1)) { |
| 1616 | Label failure, zero_correct_result; |
| 1617 | movq(kScratchRegister, src1); // Create backup for later testing. |
| 1618 | SmiToInteger64(dst, src1); |
| 1619 | imul(dst, src2); |
| 1620 | j(overflow, &failure, Label::kNear); |
| 1621 | |
| 1622 | // Check for negative zero result. If product is zero, and one |
| 1623 | // argument is negative, go to slow case. |
| 1624 | Label correct_result; |
| 1625 | testq(dst, dst); |
| 1626 | j(not_zero, &correct_result, Label::kNear); |
| 1627 | |
| 1628 | movq(dst, kScratchRegister); |
| 1629 | xor_(dst, src2); |
| 1630 | // Result was positive zero. |
| 1631 | j(positive, &zero_correct_result, Label::kNear); |
| 1632 | |
| 1633 | bind(&failure); // Reused failure exit, restores src1. |
| 1634 | movq(src1, kScratchRegister); |
| 1635 | jmp(on_not_smi_result, near_jump); |
| 1636 | |
| 1637 | bind(&zero_correct_result); |
| 1638 | Set(dst, 0); |
| 1639 | |
| 1640 | bind(&correct_result); |
| 1641 | } else { |
| 1642 | SmiToInteger64(dst, src1); |
| 1643 | imul(dst, src2); |
| 1644 | j(overflow, on_not_smi_result, near_jump); |
| 1645 | // Check for negative zero result. If product is zero, and one |
| 1646 | // argument is negative, go to slow case. |
| 1647 | Label correct_result; |
| 1648 | testq(dst, dst); |
| 1649 | j(not_zero, &correct_result, Label::kNear); |
| 1650 | // One of src1 and src2 is zero, the check whether the other is |
| 1651 | // negative. |
| 1652 | movq(kScratchRegister, src1); |
| 1653 | xor_(kScratchRegister, src2); |
| 1654 | j(negative, on_not_smi_result, near_jump); |
| 1655 | bind(&correct_result); |
| 1656 | } |
| 1657 | } |
| 1658 | |
| 1659 | |
| 1660 | void MacroAssembler::SmiDiv(Register dst, |
| 1661 | Register src1, |
| 1662 | Register src2, |
| 1663 | Label* on_not_smi_result, |
| 1664 | Label::Distance near_jump) { |
| 1665 | ASSERT(!src1.is(kScratchRegister)); |
| 1666 | ASSERT(!src2.is(kScratchRegister)); |
| 1667 | ASSERT(!dst.is(kScratchRegister)); |
| 1668 | ASSERT(!src2.is(rax)); |
| 1669 | ASSERT(!src2.is(rdx)); |
| 1670 | ASSERT(!src1.is(rdx)); |
| 1671 | |
| 1672 | // Check for 0 divisor (result is +/-Infinity). |
| 1673 | testq(src2, src2); |
| 1674 | j(zero, on_not_smi_result, near_jump); |
| 1675 | |
| 1676 | if (src1.is(rax)) { |
| 1677 | movq(kScratchRegister, src1); |
| 1678 | } |
| 1679 | SmiToInteger32(rax, src1); |
| 1680 | // We need to rule out dividing Smi::kMinValue by -1, since that would |
| 1681 | // overflow in idiv and raise an exception. |
| 1682 | // We combine this with negative zero test (negative zero only happens |
| 1683 | // when dividing zero by a negative number). |
| 1684 | |
| 1685 | // We overshoot a little and go to slow case if we divide min-value |
| 1686 | // by any negative value, not just -1. |
| 1687 | Label safe_div; |
| 1688 | testl(rax, Immediate(0x7fffffff)); |
| 1689 | j(not_zero, &safe_div, Label::kNear); |
| 1690 | testq(src2, src2); |
| 1691 | if (src1.is(rax)) { |
| 1692 | j(positive, &safe_div, Label::kNear); |
| 1693 | movq(src1, kScratchRegister); |
| 1694 | jmp(on_not_smi_result, near_jump); |
| 1695 | } else { |
| 1696 | j(negative, on_not_smi_result, near_jump); |
| 1697 | } |
| 1698 | bind(&safe_div); |
| 1699 | |
| 1700 | SmiToInteger32(src2, src2); |
| 1701 | // Sign extend src1 into edx:eax. |
| 1702 | cdq(); |
| 1703 | idivl(src2); |
| 1704 | Integer32ToSmi(src2, src2); |
| 1705 | // Check that the remainder is zero. |
| 1706 | testl(rdx, rdx); |
| 1707 | if (src1.is(rax)) { |
| 1708 | Label smi_result; |
| 1709 | j(zero, &smi_result, Label::kNear); |
| 1710 | movq(src1, kScratchRegister); |
| 1711 | jmp(on_not_smi_result, near_jump); |
| 1712 | bind(&smi_result); |
| 1713 | } else { |
| 1714 | j(not_zero, on_not_smi_result, near_jump); |
| 1715 | } |
| 1716 | if (!dst.is(src1) && src1.is(rax)) { |
| 1717 | movq(src1, kScratchRegister); |
| 1718 | } |
| 1719 | Integer32ToSmi(dst, rax); |
| 1720 | } |
| 1721 | |
| 1722 | |
| 1723 | void MacroAssembler::SmiMod(Register dst, |
| 1724 | Register src1, |
| 1725 | Register src2, |
| 1726 | Label* on_not_smi_result, |
| 1727 | Label::Distance near_jump) { |
| 1728 | ASSERT(!dst.is(kScratchRegister)); |
| 1729 | ASSERT(!src1.is(kScratchRegister)); |
| 1730 | ASSERT(!src2.is(kScratchRegister)); |
| 1731 | ASSERT(!src2.is(rax)); |
| 1732 | ASSERT(!src2.is(rdx)); |
| 1733 | ASSERT(!src1.is(rdx)); |
| 1734 | ASSERT(!src1.is(src2)); |
| 1735 | |
| 1736 | testq(src2, src2); |
| 1737 | j(zero, on_not_smi_result, near_jump); |
| 1738 | |
| 1739 | if (src1.is(rax)) { |
| 1740 | movq(kScratchRegister, src1); |
| 1741 | } |
| 1742 | SmiToInteger32(rax, src1); |
| 1743 | SmiToInteger32(src2, src2); |
| 1744 | |
| 1745 | // Test for the edge case of dividing Smi::kMinValue by -1 (will overflow). |
| 1746 | Label safe_div; |
| 1747 | cmpl(rax, Immediate(Smi::kMinValue)); |
| 1748 | j(not_equal, &safe_div, Label::kNear); |
| 1749 | cmpl(src2, Immediate(-1)); |
| 1750 | j(not_equal, &safe_div, Label::kNear); |
| 1751 | // Retag inputs and go slow case. |
| 1752 | Integer32ToSmi(src2, src2); |
| 1753 | if (src1.is(rax)) { |
| 1754 | movq(src1, kScratchRegister); |
| 1755 | } |
| 1756 | jmp(on_not_smi_result, near_jump); |
| 1757 | bind(&safe_div); |
| 1758 | |
| 1759 | // Sign extend eax into edx:eax. |
| 1760 | cdq(); |
| 1761 | idivl(src2); |
| 1762 | // Restore smi tags on inputs. |
| 1763 | Integer32ToSmi(src2, src2); |
| 1764 | if (src1.is(rax)) { |
| 1765 | movq(src1, kScratchRegister); |
| 1766 | } |
| 1767 | // Check for a negative zero result. If the result is zero, and the |
| 1768 | // dividend is negative, go slow to return a floating point negative zero. |
| 1769 | Label smi_result; |
| 1770 | testl(rdx, rdx); |
| 1771 | j(not_zero, &smi_result, Label::kNear); |
| 1772 | testq(src1, src1); |
| 1773 | j(negative, on_not_smi_result, near_jump); |
| 1774 | bind(&smi_result); |
| 1775 | Integer32ToSmi(dst, rdx); |
| 1776 | } |
| 1777 | |
| 1778 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1779 | void MacroAssembler::SmiNot(Register dst, Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1780 | ASSERT(!dst.is(kScratchRegister)); |
| 1781 | ASSERT(!src.is(kScratchRegister)); |
| 1782 | // Set tag and padding bits before negating, so that they are zero afterwards. |
| 1783 | movl(kScratchRegister, Immediate(~0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1784 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1785 | xor_(dst, kScratchRegister); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1786 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1787 | lea(dst, Operand(src, kScratchRegister, times_1, 0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1788 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1789 | not_(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1790 | } |
| 1791 | |
| 1792 | |
| 1793 | void MacroAssembler::SmiAnd(Register dst, Register src1, Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1794 | ASSERT(!dst.is(src2)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1795 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1796 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1797 | } |
| 1798 | and_(dst, src2); |
| 1799 | } |
| 1800 | |
| 1801 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1802 | void MacroAssembler::SmiAndConstant(Register dst, Register src, Smi* constant) { |
| 1803 | if (constant->value() == 0) { |
lrn@chromium.org | 5d00b60 | 2011-01-05 09:51:43 +0000 | [diff] [blame] | 1804 | Set(dst, 0); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1805 | } else if (dst.is(src)) { |
| 1806 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1807 | Register constant_reg = GetSmiConstant(constant); |
| 1808 | and_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1809 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1810 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1811 | and_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1812 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1813 | } |
| 1814 | |
| 1815 | |
| 1816 | void MacroAssembler::SmiOr(Register dst, Register src1, Register src2) { |
| 1817 | if (!dst.is(src1)) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 1818 | ASSERT(!src1.is(src2)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1819 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1820 | } |
| 1821 | or_(dst, src2); |
| 1822 | } |
| 1823 | |
| 1824 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1825 | void MacroAssembler::SmiOrConstant(Register dst, Register src, Smi* constant) { |
| 1826 | if (dst.is(src)) { |
| 1827 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1828 | Register constant_reg = GetSmiConstant(constant); |
| 1829 | or_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1830 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1831 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1832 | or_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1833 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1834 | } |
| 1835 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1836 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1837 | void MacroAssembler::SmiXor(Register dst, Register src1, Register src2) { |
| 1838 | if (!dst.is(src1)) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 1839 | ASSERT(!src1.is(src2)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1840 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1841 | } |
| 1842 | xor_(dst, src2); |
| 1843 | } |
| 1844 | |
| 1845 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1846 | void MacroAssembler::SmiXorConstant(Register dst, Register src, Smi* constant) { |
| 1847 | if (dst.is(src)) { |
| 1848 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1849 | Register constant_reg = GetSmiConstant(constant); |
| 1850 | xor_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1851 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1852 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1853 | xor_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1854 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1855 | } |
| 1856 | |
| 1857 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1858 | void MacroAssembler::SmiShiftArithmeticRightConstant(Register dst, |
| 1859 | Register src, |
| 1860 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1861 | ASSERT(is_uint5(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1862 | if (shift_value > 0) { |
| 1863 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1864 | sar(dst, Immediate(shift_value + kSmiShift)); |
| 1865 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1866 | } else { |
| 1867 | UNIMPLEMENTED(); // Not used. |
| 1868 | } |
| 1869 | } |
| 1870 | } |
| 1871 | |
| 1872 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1873 | void MacroAssembler::SmiShiftLeftConstant(Register dst, |
| 1874 | Register src, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1875 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1876 | if (!dst.is(src)) { |
| 1877 | movq(dst, src); |
| 1878 | } |
| 1879 | if (shift_value > 0) { |
| 1880 | shl(dst, Immediate(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1881 | } |
| 1882 | } |
| 1883 | |
| 1884 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1885 | void MacroAssembler::SmiShiftLogicalRightConstant( |
| 1886 | Register dst, Register src, int shift_value, |
| 1887 | Label* on_not_smi_result, Label::Distance near_jump) { |
| 1888 | // Logic right shift interprets its result as an *unsigned* number. |
| 1889 | if (dst.is(src)) { |
| 1890 | UNIMPLEMENTED(); // Not used. |
| 1891 | } else { |
| 1892 | movq(dst, src); |
| 1893 | if (shift_value == 0) { |
| 1894 | testq(dst, dst); |
| 1895 | j(negative, on_not_smi_result, near_jump); |
| 1896 | } |
| 1897 | shr(dst, Immediate(shift_value + kSmiShift)); |
| 1898 | shl(dst, Immediate(kSmiShift)); |
| 1899 | } |
| 1900 | } |
| 1901 | |
| 1902 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1903 | void MacroAssembler::SmiShiftLeft(Register dst, |
| 1904 | Register src1, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1905 | Register src2) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1906 | ASSERT(!dst.is(rcx)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1907 | // Untag shift amount. |
| 1908 | if (!dst.is(src1)) { |
| 1909 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1910 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1911 | SmiToInteger32(rcx, src2); |
| 1912 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 1913 | and_(rcx, Immediate(0x1f)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1914 | shl_cl(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1915 | } |
| 1916 | |
| 1917 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1918 | void MacroAssembler::SmiShiftLogicalRight(Register dst, |
| 1919 | Register src1, |
| 1920 | Register src2, |
| 1921 | Label* on_not_smi_result, |
| 1922 | Label::Distance near_jump) { |
| 1923 | ASSERT(!dst.is(kScratchRegister)); |
| 1924 | ASSERT(!src1.is(kScratchRegister)); |
| 1925 | ASSERT(!src2.is(kScratchRegister)); |
| 1926 | ASSERT(!dst.is(rcx)); |
| 1927 | // dst and src1 can be the same, because the one case that bails out |
| 1928 | // is a shift by 0, which leaves dst, and therefore src1, unchanged. |
| 1929 | if (src1.is(rcx) || src2.is(rcx)) { |
| 1930 | movq(kScratchRegister, rcx); |
| 1931 | } |
| 1932 | if (!dst.is(src1)) { |
| 1933 | movq(dst, src1); |
| 1934 | } |
| 1935 | SmiToInteger32(rcx, src2); |
| 1936 | orl(rcx, Immediate(kSmiShift)); |
| 1937 | shr_cl(dst); // Shift is rcx modulo 0x1f + 32. |
| 1938 | shl(dst, Immediate(kSmiShift)); |
| 1939 | testq(dst, dst); |
| 1940 | if (src1.is(rcx) || src2.is(rcx)) { |
| 1941 | Label positive_result; |
| 1942 | j(positive, &positive_result, Label::kNear); |
| 1943 | if (src1.is(rcx)) { |
| 1944 | movq(src1, kScratchRegister); |
| 1945 | } else { |
| 1946 | movq(src2, kScratchRegister); |
| 1947 | } |
| 1948 | jmp(on_not_smi_result, near_jump); |
| 1949 | bind(&positive_result); |
| 1950 | } else { |
| 1951 | // src2 was zero and src1 negative. |
| 1952 | j(negative, on_not_smi_result, near_jump); |
| 1953 | } |
| 1954 | } |
| 1955 | |
| 1956 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1957 | void MacroAssembler::SmiShiftArithmeticRight(Register dst, |
| 1958 | Register src1, |
| 1959 | Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1960 | ASSERT(!dst.is(kScratchRegister)); |
| 1961 | ASSERT(!src1.is(kScratchRegister)); |
| 1962 | ASSERT(!src2.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1963 | ASSERT(!dst.is(rcx)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1964 | if (src1.is(rcx)) { |
| 1965 | movq(kScratchRegister, src1); |
| 1966 | } else if (src2.is(rcx)) { |
| 1967 | movq(kScratchRegister, src2); |
| 1968 | } |
| 1969 | if (!dst.is(src1)) { |
| 1970 | movq(dst, src1); |
| 1971 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1972 | SmiToInteger32(rcx, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1973 | orl(rcx, Immediate(kSmiShift)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1974 | sar_cl(dst); // Shift 32 + original rcx & 0x1f. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1975 | shl(dst, Immediate(kSmiShift)); |
| 1976 | if (src1.is(rcx)) { |
| 1977 | movq(src1, kScratchRegister); |
| 1978 | } else if (src2.is(rcx)) { |
| 1979 | movq(src2, kScratchRegister); |
| 1980 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1981 | } |
| 1982 | |
| 1983 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1984 | void MacroAssembler::SelectNonSmi(Register dst, |
| 1985 | Register src1, |
| 1986 | Register src2, |
| 1987 | Label* on_not_smis, |
| 1988 | Label::Distance near_jump) { |
| 1989 | ASSERT(!dst.is(kScratchRegister)); |
| 1990 | ASSERT(!src1.is(kScratchRegister)); |
| 1991 | ASSERT(!src2.is(kScratchRegister)); |
| 1992 | ASSERT(!dst.is(src1)); |
| 1993 | ASSERT(!dst.is(src2)); |
| 1994 | // Both operands must not be smis. |
| 1995 | #ifdef DEBUG |
| 1996 | if (allow_stub_calls()) { // Check contains a stub call. |
| 1997 | Condition not_both_smis = NegateCondition(CheckBothSmi(src1, src2)); |
| 1998 | Check(not_both_smis, "Both registers were smis in SelectNonSmi."); |
| 1999 | } |
| 2000 | #endif |
| 2001 | ASSERT_EQ(0, kSmiTag); |
| 2002 | ASSERT_EQ(0, Smi::FromInt(0)); |
| 2003 | movl(kScratchRegister, Immediate(kSmiTagMask)); |
| 2004 | and_(kScratchRegister, src1); |
| 2005 | testl(kScratchRegister, src2); |
| 2006 | // If non-zero then both are smis. |
| 2007 | j(not_zero, on_not_smis, near_jump); |
| 2008 | |
| 2009 | // Exactly one operand is a smi. |
| 2010 | ASSERT_EQ(1, static_cast<int>(kSmiTagMask)); |
| 2011 | // kScratchRegister still holds src1 & kSmiTag, which is either zero or one. |
| 2012 | subq(kScratchRegister, Immediate(1)); |
| 2013 | // If src1 is a smi, then scratch register all 1s, else it is all 0s. |
| 2014 | movq(dst, src1); |
| 2015 | xor_(dst, src2); |
| 2016 | and_(dst, kScratchRegister); |
| 2017 | // If src1 is a smi, dst holds src1 ^ src2, else it is zero. |
| 2018 | xor_(dst, src1); |
| 2019 | // If src1 is a smi, dst is src2, else it is src1, i.e., the non-smi. |
| 2020 | } |
| 2021 | |
| 2022 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2023 | SmiIndex MacroAssembler::SmiToIndex(Register dst, |
| 2024 | Register src, |
| 2025 | int shift) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2026 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2027 | // There is a possible optimization if shift is in the range 60-63, but that |
| 2028 | // will (and must) never happen. |
| 2029 | if (!dst.is(src)) { |
| 2030 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2031 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2032 | if (shift < kSmiShift) { |
| 2033 | sar(dst, Immediate(kSmiShift - shift)); |
| 2034 | } else { |
| 2035 | shl(dst, Immediate(shift - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2036 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2037 | return SmiIndex(dst, times_1); |
| 2038 | } |
| 2039 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2040 | SmiIndex MacroAssembler::SmiToNegativeIndex(Register dst, |
| 2041 | Register src, |
| 2042 | int shift) { |
| 2043 | // Register src holds a positive smi. |
| 2044 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2045 | if (!dst.is(src)) { |
| 2046 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2047 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2048 | neg(dst); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2049 | if (shift < kSmiShift) { |
| 2050 | sar(dst, Immediate(kSmiShift - shift)); |
| 2051 | } else { |
| 2052 | shl(dst, Immediate(shift - kSmiShift)); |
| 2053 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2054 | return SmiIndex(dst, times_1); |
| 2055 | } |
| 2056 | |
| 2057 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2058 | void MacroAssembler::AddSmiField(Register dst, const Operand& src) { |
| 2059 | ASSERT_EQ(0, kSmiShift % kBitsPerByte); |
| 2060 | addl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 2061 | } |
| 2062 | |
| 2063 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2064 | void MacroAssembler::JumpIfNotString(Register object, |
| 2065 | Register object_map, |
| 2066 | Label* not_string, |
| 2067 | Label::Distance near_jump) { |
| 2068 | Condition is_smi = CheckSmi(object); |
| 2069 | j(is_smi, not_string, near_jump); |
| 2070 | CmpObjectType(object, FIRST_NONSTRING_TYPE, object_map); |
| 2071 | j(above_equal, not_string, near_jump); |
| 2072 | } |
| 2073 | |
| 2074 | |
| 2075 | void MacroAssembler::JumpIfNotBothSequentialAsciiStrings( |
| 2076 | Register first_object, |
| 2077 | Register second_object, |
| 2078 | Register scratch1, |
| 2079 | Register scratch2, |
| 2080 | Label* on_fail, |
| 2081 | Label::Distance near_jump) { |
| 2082 | // Check that both objects are not smis. |
| 2083 | Condition either_smi = CheckEitherSmi(first_object, second_object); |
| 2084 | j(either_smi, on_fail, near_jump); |
| 2085 | |
| 2086 | // Load instance type for both strings. |
| 2087 | movq(scratch1, FieldOperand(first_object, HeapObject::kMapOffset)); |
| 2088 | movq(scratch2, FieldOperand(second_object, HeapObject::kMapOffset)); |
| 2089 | movzxbl(scratch1, FieldOperand(scratch1, Map::kInstanceTypeOffset)); |
| 2090 | movzxbl(scratch2, FieldOperand(scratch2, Map::kInstanceTypeOffset)); |
| 2091 | |
| 2092 | // Check that both are flat ascii strings. |
| 2093 | ASSERT(kNotStringTag != 0); |
| 2094 | const int kFlatAsciiStringMask = |
| 2095 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 2096 | const int kFlatAsciiStringTag = ASCII_STRING_TYPE; |
| 2097 | |
| 2098 | andl(scratch1, Immediate(kFlatAsciiStringMask)); |
| 2099 | andl(scratch2, Immediate(kFlatAsciiStringMask)); |
| 2100 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
| 2101 | ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3)); |
| 2102 | lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
| 2103 | cmpl(scratch1, |
| 2104 | Immediate(kFlatAsciiStringTag + (kFlatAsciiStringTag << 3))); |
| 2105 | j(not_equal, on_fail, near_jump); |
| 2106 | } |
| 2107 | |
| 2108 | |
| 2109 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii( |
| 2110 | Register instance_type, |
| 2111 | Register scratch, |
| 2112 | Label* failure, |
| 2113 | Label::Distance near_jump) { |
| 2114 | if (!scratch.is(instance_type)) { |
| 2115 | movl(scratch, instance_type); |
| 2116 | } |
| 2117 | |
| 2118 | const int kFlatAsciiStringMask = |
| 2119 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 2120 | |
| 2121 | andl(scratch, Immediate(kFlatAsciiStringMask)); |
| 2122 | cmpl(scratch, Immediate(kStringTag | kSeqStringTag | kAsciiStringTag)); |
| 2123 | j(not_equal, failure, near_jump); |
| 2124 | } |
| 2125 | |
| 2126 | |
| 2127 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialAscii( |
| 2128 | Register first_object_instance_type, |
| 2129 | Register second_object_instance_type, |
| 2130 | Register scratch1, |
| 2131 | Register scratch2, |
| 2132 | Label* on_fail, |
| 2133 | Label::Distance near_jump) { |
| 2134 | // Load instance type for both strings. |
| 2135 | movq(scratch1, first_object_instance_type); |
| 2136 | movq(scratch2, second_object_instance_type); |
| 2137 | |
| 2138 | // Check that both are flat ascii strings. |
| 2139 | ASSERT(kNotStringTag != 0); |
| 2140 | const int kFlatAsciiStringMask = |
| 2141 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 2142 | const int kFlatAsciiStringTag = ASCII_STRING_TYPE; |
| 2143 | |
| 2144 | andl(scratch1, Immediate(kFlatAsciiStringMask)); |
| 2145 | andl(scratch2, Immediate(kFlatAsciiStringMask)); |
| 2146 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
| 2147 | ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3)); |
| 2148 | lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
| 2149 | cmpl(scratch1, |
| 2150 | Immediate(kFlatAsciiStringTag + (kFlatAsciiStringTag << 3))); |
| 2151 | j(not_equal, on_fail, near_jump); |
| 2152 | } |
| 2153 | |
| 2154 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2155 | |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 2156 | void MacroAssembler::Move(Register dst, Register src) { |
| 2157 | if (!dst.is(src)) { |
| 2158 | movq(dst, src); |
| 2159 | } |
| 2160 | } |
| 2161 | |
| 2162 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2163 | void MacroAssembler::Move(Register dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 2164 | ASSERT(!source->IsFailure()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2165 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2166 | Move(dst, Smi::cast(*source)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2167 | } else { |
| 2168 | movq(dst, source, RelocInfo::EMBEDDED_OBJECT); |
| 2169 | } |
| 2170 | } |
| 2171 | |
| 2172 | |
| 2173 | void MacroAssembler::Move(const Operand& dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2174 | ASSERT(!source->IsFailure()); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 2175 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2176 | Move(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 2177 | } else { |
| 2178 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 2179 | movq(dst, kScratchRegister); |
| 2180 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2181 | } |
| 2182 | |
| 2183 | |
| 2184 | void MacroAssembler::Cmp(Register dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2185 | if (source->IsSmi()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2186 | Cmp(dst, Smi::cast(*source)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2187 | } else { |
| 2188 | Move(kScratchRegister, source); |
| 2189 | cmpq(dst, kScratchRegister); |
| 2190 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2191 | } |
| 2192 | |
| 2193 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2194 | void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 2195 | if (source->IsSmi()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2196 | Cmp(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 2197 | } else { |
| 2198 | ASSERT(source->IsHeapObject()); |
| 2199 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 2200 | cmpq(dst, kScratchRegister); |
| 2201 | } |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2202 | } |
| 2203 | |
| 2204 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2205 | void MacroAssembler::Push(Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 2206 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2207 | Push(Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 2208 | } else { |
| 2209 | ASSERT(source->IsHeapObject()); |
| 2210 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 2211 | push(kScratchRegister); |
| 2212 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2213 | } |
| 2214 | |
| 2215 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 2216 | void MacroAssembler::Push(Smi* source) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 2217 | intptr_t smi = reinterpret_cast<intptr_t>(source); |
| 2218 | if (is_int32(smi)) { |
| 2219 | push(Immediate(static_cast<int32_t>(smi))); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 2220 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 2221 | Register constant = GetSmiConstant(source); |
| 2222 | push(constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2223 | } |
| 2224 | } |
| 2225 | |
| 2226 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2227 | void MacroAssembler::Drop(int stack_elements) { |
| 2228 | if (stack_elements > 0) { |
| 2229 | addq(rsp, Immediate(stack_elements * kPointerSize)); |
| 2230 | } |
| 2231 | } |
| 2232 | |
| 2233 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2234 | void MacroAssembler::Test(const Operand& src, Smi* source) { |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 2235 | testl(Operand(src, kIntSize), Immediate(source->value())); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 2236 | } |
| 2237 | |
| 2238 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2239 | void MacroAssembler::Jump(ExternalReference ext) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2240 | LoadAddress(kScratchRegister, ext); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2241 | jmp(kScratchRegister); |
| 2242 | } |
| 2243 | |
| 2244 | |
| 2245 | void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) { |
| 2246 | movq(kScratchRegister, destination, rmode); |
| 2247 | jmp(kScratchRegister); |
| 2248 | } |
| 2249 | |
| 2250 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2251 | void MacroAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode) { |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2252 | // TODO(X64): Inline this |
| 2253 | jmp(code_object, rmode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2254 | } |
| 2255 | |
| 2256 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2257 | int MacroAssembler::CallSize(ExternalReference ext) { |
| 2258 | // Opcode for call kScratchRegister is: Rex.B FF D4 (three bytes). |
| 2259 | const int kCallInstructionSize = 3; |
| 2260 | return LoadAddressSize(ext) + kCallInstructionSize; |
| 2261 | } |
| 2262 | |
| 2263 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2264 | void MacroAssembler::Call(ExternalReference ext) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2265 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2266 | int end_position = pc_offset() + CallSize(ext); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2267 | #endif |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2268 | LoadAddress(kScratchRegister, ext); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2269 | call(kScratchRegister); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2270 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2271 | CHECK_EQ(end_position, pc_offset()); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2272 | #endif |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2273 | } |
| 2274 | |
| 2275 | |
| 2276 | void MacroAssembler::Call(Address destination, RelocInfo::Mode rmode) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2277 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2278 | int end_position = pc_offset() + CallSize(destination, rmode); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2279 | #endif |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2280 | movq(kScratchRegister, destination, rmode); |
| 2281 | call(kScratchRegister); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2282 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2283 | CHECK_EQ(pc_offset(), end_position); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2284 | #endif |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2285 | } |
| 2286 | |
| 2287 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2288 | void MacroAssembler::Call(Handle<Code> code_object, |
| 2289 | RelocInfo::Mode rmode, |
| 2290 | unsigned ast_id) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2291 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2292 | int end_position = pc_offset() + CallSize(code_object); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2293 | #endif |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2294 | ASSERT(RelocInfo::IsCodeTarget(rmode)); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2295 | call(code_object, rmode, ast_id); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2296 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2297 | CHECK_EQ(end_position, pc_offset()); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2298 | #endif |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2299 | } |
| 2300 | |
| 2301 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2302 | void MacroAssembler::Pushad() { |
| 2303 | push(rax); |
| 2304 | push(rcx); |
| 2305 | push(rdx); |
| 2306 | push(rbx); |
| 2307 | // Not pushing rsp or rbp. |
| 2308 | push(rsi); |
| 2309 | push(rdi); |
| 2310 | push(r8); |
| 2311 | push(r9); |
| 2312 | // r10 is kScratchRegister. |
| 2313 | push(r11); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2314 | // r12 is kSmiConstantRegister. |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2315 | // r13 is kRootRegister. |
| 2316 | push(r14); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2317 | push(r15); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2318 | STATIC_ASSERT(11 == kNumSafepointSavedRegisters); |
| 2319 | // Use lea for symmetry with Popad. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2320 | int sp_delta = |
| 2321 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
| 2322 | lea(rsp, Operand(rsp, -sp_delta)); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2323 | } |
| 2324 | |
| 2325 | |
| 2326 | void MacroAssembler::Popad() { |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2327 | // Popad must not change the flags, so use lea instead of addq. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2328 | int sp_delta = |
| 2329 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
| 2330 | lea(rsp, Operand(rsp, sp_delta)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2331 | pop(r15); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2332 | pop(r14); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2333 | pop(r11); |
| 2334 | pop(r9); |
| 2335 | pop(r8); |
| 2336 | pop(rdi); |
| 2337 | pop(rsi); |
| 2338 | pop(rbx); |
| 2339 | pop(rdx); |
| 2340 | pop(rcx); |
| 2341 | pop(rax); |
| 2342 | } |
| 2343 | |
| 2344 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2345 | void MacroAssembler::Dropad() { |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2346 | addq(rsp, Immediate(kNumSafepointRegisters * kPointerSize)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2347 | } |
| 2348 | |
| 2349 | |
| 2350 | // Order general registers are pushed by Pushad: |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2351 | // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15. |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2352 | int MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = { |
| 2353 | 0, |
| 2354 | 1, |
| 2355 | 2, |
| 2356 | 3, |
| 2357 | -1, |
| 2358 | -1, |
| 2359 | 4, |
| 2360 | 5, |
| 2361 | 6, |
| 2362 | 7, |
| 2363 | -1, |
| 2364 | 8, |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2365 | -1, |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2366 | -1, |
| 2367 | 9, |
| 2368 | 10 |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2369 | }; |
| 2370 | |
| 2371 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2372 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) { |
| 2373 | movq(SafepointRegisterSlot(dst), src); |
| 2374 | } |
| 2375 | |
| 2376 | |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 2377 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
| 2378 | movq(dst, SafepointRegisterSlot(src)); |
| 2379 | } |
| 2380 | |
| 2381 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2382 | Operand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 2383 | return Operand(rsp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 2384 | } |
| 2385 | |
| 2386 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2387 | void MacroAssembler::PushTryHandler(CodeLocation try_location, |
| 2388 | HandlerType type) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2389 | // Adjust this code if not the case. |
| 2390 | ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); |
| 2391 | |
| 2392 | // The pc (return address) is already on TOS. This code pushes state, |
| 2393 | // frame pointer and current handler. Check that they are expected |
| 2394 | // next on the stack, in that order. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2395 | ASSERT_EQ(StackHandlerConstants::kStateOffset, |
| 2396 | StackHandlerConstants::kPCOffset - kPointerSize); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2397 | ASSERT_EQ(StackHandlerConstants::kFPOffset, |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2398 | StackHandlerConstants::kStateOffset - kPointerSize); |
| 2399 | ASSERT_EQ(StackHandlerConstants::kNextOffset, |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2400 | StackHandlerConstants::kFPOffset - kPointerSize); |
| 2401 | |
| 2402 | if (try_location == IN_JAVASCRIPT) { |
| 2403 | if (type == TRY_CATCH_HANDLER) { |
| 2404 | push(Immediate(StackHandler::TRY_CATCH)); |
| 2405 | } else { |
| 2406 | push(Immediate(StackHandler::TRY_FINALLY)); |
| 2407 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2408 | push(rbp); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2409 | } else { |
| 2410 | ASSERT(try_location == IN_JS_ENTRY); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2411 | // The frame pointer does not point to a JS frame so we save NULL |
| 2412 | // for rbp. We expect the code throwing an exception to check rbp |
| 2413 | // before dereferencing it to restore the context. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2414 | push(Immediate(StackHandler::ENTRY)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2415 | push(Immediate(0)); // NULL frame pointer. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2416 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2417 | // Save the current handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2418 | Operand handler_operand = |
| 2419 | ExternalOperand(ExternalReference(Isolate::k_handler_address, isolate())); |
| 2420 | push(handler_operand); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2421 | // Link this handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2422 | movq(handler_operand, rsp); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 2423 | } |
| 2424 | |
| 2425 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2426 | void MacroAssembler::PopTryHandler() { |
| 2427 | ASSERT_EQ(0, StackHandlerConstants::kNextOffset); |
| 2428 | // Unlink this handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2429 | Operand handler_operand = |
| 2430 | ExternalOperand(ExternalReference(Isolate::k_handler_address, isolate())); |
| 2431 | pop(handler_operand); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2432 | // Remove the remaining fields. |
| 2433 | addq(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
| 2434 | } |
| 2435 | |
| 2436 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2437 | void MacroAssembler::Throw(Register value) { |
| 2438 | // Check that stack should contain next handler, frame pointer, state and |
| 2439 | // return address in that order. |
| 2440 | STATIC_ASSERT(StackHandlerConstants::kFPOffset + kPointerSize == |
| 2441 | StackHandlerConstants::kStateOffset); |
| 2442 | STATIC_ASSERT(StackHandlerConstants::kStateOffset + kPointerSize == |
| 2443 | StackHandlerConstants::kPCOffset); |
| 2444 | // Keep thrown value in rax. |
| 2445 | if (!value.is(rax)) { |
| 2446 | movq(rax, value); |
| 2447 | } |
| 2448 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2449 | ExternalReference handler_address(Isolate::k_handler_address, isolate()); |
| 2450 | Operand handler_operand = ExternalOperand(handler_address); |
| 2451 | movq(rsp, handler_operand); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2452 | // get next in chain |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2453 | pop(handler_operand); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2454 | pop(rbp); // pop frame pointer |
| 2455 | pop(rdx); // remove state |
| 2456 | |
| 2457 | // Before returning we restore the context from the frame pointer if not NULL. |
| 2458 | // The frame pointer is NULL in the exception handler of a JS entry frame. |
| 2459 | Set(rsi, 0); // Tentatively set context pointer to NULL |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2460 | Label skip; |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2461 | cmpq(rbp, Immediate(0)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2462 | j(equal, &skip, Label::kNear); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2463 | movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 2464 | bind(&skip); |
| 2465 | ret(0); |
| 2466 | } |
| 2467 | |
| 2468 | |
| 2469 | void MacroAssembler::ThrowUncatchable(UncatchableExceptionType type, |
| 2470 | Register value) { |
| 2471 | // Keep thrown value in rax. |
| 2472 | if (!value.is(rax)) { |
| 2473 | movq(rax, value); |
| 2474 | } |
| 2475 | // Fetch top stack handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2476 | ExternalReference handler_address(Isolate::k_handler_address, isolate()); |
| 2477 | Load(rsp, handler_address); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2478 | |
| 2479 | // Unwind the handlers until the ENTRY handler is found. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2480 | Label loop, done; |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2481 | bind(&loop); |
| 2482 | // Load the type of the current stack handler. |
| 2483 | const int kStateOffset = StackHandlerConstants::kStateOffset; |
| 2484 | cmpq(Operand(rsp, kStateOffset), Immediate(StackHandler::ENTRY)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2485 | j(equal, &done, Label::kNear); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2486 | // Fetch the next handler in the list. |
| 2487 | const int kNextOffset = StackHandlerConstants::kNextOffset; |
| 2488 | movq(rsp, Operand(rsp, kNextOffset)); |
| 2489 | jmp(&loop); |
| 2490 | bind(&done); |
| 2491 | |
| 2492 | // Set the top handler address to next handler past the current ENTRY handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2493 | Operand handler_operand = ExternalOperand(handler_address); |
| 2494 | pop(handler_operand); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2495 | |
| 2496 | if (type == OUT_OF_MEMORY) { |
| 2497 | // Set external caught exception to false. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2498 | ExternalReference external_caught( |
| 2499 | Isolate::k_external_caught_exception_address, isolate()); |
ager@chromium.org | a9aa5fa | 2011-04-13 08:46:07 +0000 | [diff] [blame] | 2500 | Set(rax, static_cast<int64_t>(false)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2501 | Store(external_caught, rax); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2502 | |
| 2503 | // Set pending exception and rax to out of memory exception. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2504 | ExternalReference pending_exception(Isolate::k_pending_exception_address, |
| 2505 | isolate()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2506 | movq(rax, Failure::OutOfMemoryException(), RelocInfo::NONE); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2507 | Store(pending_exception, rax); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2508 | } |
| 2509 | |
| 2510 | // Clear the context pointer. |
| 2511 | Set(rsi, 0); |
| 2512 | |
| 2513 | // Restore registers from handler. |
| 2514 | STATIC_ASSERT(StackHandlerConstants::kNextOffset + kPointerSize == |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2515 | StackHandlerConstants::kFPOffset); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2516 | pop(rbp); // FP |
| 2517 | STATIC_ASSERT(StackHandlerConstants::kFPOffset + kPointerSize == |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2518 | StackHandlerConstants::kStateOffset); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2519 | pop(rdx); // State |
| 2520 | |
| 2521 | STATIC_ASSERT(StackHandlerConstants::kStateOffset + kPointerSize == |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2522 | StackHandlerConstants::kPCOffset); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2523 | ret(0); |
| 2524 | } |
| 2525 | |
| 2526 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2527 | void MacroAssembler::Ret() { |
| 2528 | ret(0); |
| 2529 | } |
| 2530 | |
| 2531 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 2532 | void MacroAssembler::Ret(int bytes_dropped, Register scratch) { |
| 2533 | if (is_uint16(bytes_dropped)) { |
| 2534 | ret(bytes_dropped); |
| 2535 | } else { |
| 2536 | pop(scratch); |
| 2537 | addq(rsp, Immediate(bytes_dropped)); |
| 2538 | push(scratch); |
| 2539 | ret(0); |
| 2540 | } |
| 2541 | } |
| 2542 | |
| 2543 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2544 | void MacroAssembler::FCmp() { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 2545 | fucomip(); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 2546 | fstp(0); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2547 | } |
| 2548 | |
| 2549 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2550 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 2551 | InstanceType type, |
| 2552 | Register map) { |
| 2553 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 2554 | CmpInstanceType(map, type); |
| 2555 | } |
| 2556 | |
| 2557 | |
| 2558 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 2559 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 2560 | Immediate(static_cast<int8_t>(type))); |
| 2561 | } |
| 2562 | |
| 2563 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2564 | void MacroAssembler::CheckFastElements(Register map, |
| 2565 | Label* fail, |
| 2566 | Label::Distance distance) { |
| 2567 | STATIC_ASSERT(JSObject::FAST_ELEMENTS == 0); |
| 2568 | cmpb(FieldOperand(map, Map::kBitField2Offset), |
| 2569 | Immediate(Map::kMaximumBitField2FastElementValue)); |
| 2570 | j(above, fail, distance); |
| 2571 | } |
| 2572 | |
| 2573 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2574 | void MacroAssembler::CheckMap(Register obj, |
| 2575 | Handle<Map> map, |
| 2576 | Label* fail, |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2577 | SmiCheckType smi_check_type) { |
| 2578 | if (smi_check_type == DO_SMI_CHECK) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2579 | JumpIfSmi(obj, fail); |
| 2580 | } |
| 2581 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
| 2582 | j(not_equal, fail); |
| 2583 | } |
| 2584 | |
| 2585 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2586 | void MacroAssembler::ClampUint8(Register reg) { |
| 2587 | Label done; |
| 2588 | testl(reg, Immediate(0xFFFFFF00)); |
| 2589 | j(zero, &done, Label::kNear); |
| 2590 | setcc(negative, reg); // 1 if negative, 0 if positive. |
| 2591 | decb(reg); // 0 if negative, 255 if positive. |
| 2592 | bind(&done); |
| 2593 | } |
| 2594 | |
| 2595 | |
| 2596 | void MacroAssembler::ClampDoubleToUint8(XMMRegister input_reg, |
| 2597 | XMMRegister temp_xmm_reg, |
| 2598 | Register result_reg, |
| 2599 | Register temp_reg) { |
| 2600 | Label done; |
| 2601 | Set(result_reg, 0); |
| 2602 | xorps(temp_xmm_reg, temp_xmm_reg); |
| 2603 | ucomisd(input_reg, temp_xmm_reg); |
| 2604 | j(below, &done, Label::kNear); |
| 2605 | uint64_t one_half = BitCast<uint64_t, double>(0.5); |
| 2606 | Set(temp_reg, one_half); |
| 2607 | movq(temp_xmm_reg, temp_reg); |
| 2608 | addsd(temp_xmm_reg, input_reg); |
| 2609 | cvttsd2si(result_reg, temp_xmm_reg); |
| 2610 | testl(result_reg, Immediate(0xFFFFFF00)); |
| 2611 | j(zero, &done, Label::kNear); |
| 2612 | Set(result_reg, 255); |
| 2613 | bind(&done); |
| 2614 | } |
| 2615 | |
| 2616 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2617 | void MacroAssembler::LoadInstanceDescriptors(Register map, |
| 2618 | Register descriptors) { |
| 2619 | movq(descriptors, FieldOperand(map, |
| 2620 | Map::kInstanceDescriptorsOrBitField3Offset)); |
| 2621 | Label not_smi; |
| 2622 | JumpIfNotSmi(descriptors, ¬_smi, Label::kNear); |
| 2623 | Move(descriptors, isolate()->factory()->empty_descriptor_array()); |
| 2624 | bind(¬_smi); |
| 2625 | } |
| 2626 | |
| 2627 | |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2628 | void MacroAssembler::DispatchMap(Register obj, |
| 2629 | Handle<Map> map, |
| 2630 | Handle<Code> success, |
| 2631 | SmiCheckType smi_check_type) { |
| 2632 | Label fail; |
| 2633 | if (smi_check_type == DO_SMI_CHECK) { |
| 2634 | JumpIfSmi(obj, &fail); |
| 2635 | } |
| 2636 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
| 2637 | j(equal, success, RelocInfo::CODE_TARGET); |
| 2638 | |
| 2639 | bind(&fail); |
| 2640 | } |
| 2641 | |
| 2642 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2643 | void MacroAssembler::AbortIfNotNumber(Register object) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2644 | Label ok; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2645 | Condition is_smi = CheckSmi(object); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2646 | j(is_smi, &ok, Label::kNear); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2647 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2648 | isolate()->factory()->heap_number_map()); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2649 | Assert(equal, "Operand not a number"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2650 | bind(&ok); |
| 2651 | } |
| 2652 | |
| 2653 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 2654 | void MacroAssembler::AbortIfSmi(Register object) { |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 2655 | Condition is_smi = CheckSmi(object); |
| 2656 | Assert(NegateCondition(is_smi), "Operand is a smi"); |
| 2657 | } |
| 2658 | |
| 2659 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2660 | void MacroAssembler::AbortIfNotSmi(Register object) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2661 | Condition is_smi = CheckSmi(object); |
| 2662 | Assert(is_smi, "Operand is not a smi"); |
| 2663 | } |
| 2664 | |
| 2665 | |
| 2666 | void MacroAssembler::AbortIfNotSmi(const Operand& object) { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 2667 | Condition is_smi = CheckSmi(object); |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 2668 | Assert(is_smi, "Operand is not a smi"); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 2669 | } |
| 2670 | |
| 2671 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2672 | void MacroAssembler::AbortIfNotString(Register object) { |
| 2673 | testb(object, Immediate(kSmiTagMask)); |
| 2674 | Assert(not_equal, "Operand is not a string"); |
| 2675 | push(object); |
| 2676 | movq(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 2677 | CmpInstanceType(object, FIRST_NONSTRING_TYPE); |
| 2678 | pop(object); |
| 2679 | Assert(below, "Operand is not a string"); |
| 2680 | } |
| 2681 | |
| 2682 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 2683 | void MacroAssembler::AbortIfNotRootValue(Register src, |
| 2684 | Heap::RootListIndex root_value_index, |
| 2685 | const char* message) { |
| 2686 | ASSERT(!src.is(kScratchRegister)); |
| 2687 | LoadRoot(kScratchRegister, root_value_index); |
| 2688 | cmpq(src, kScratchRegister); |
| 2689 | Check(equal, message); |
| 2690 | } |
| 2691 | |
| 2692 | |
| 2693 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2694 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 2695 | Register map, |
| 2696 | Register instance_type) { |
| 2697 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 2698 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 2699 | ASSERT(kNotStringTag != 0); |
| 2700 | testb(instance_type, Immediate(kIsNotStringMask)); |
| 2701 | return zero; |
| 2702 | } |
| 2703 | |
| 2704 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2705 | void MacroAssembler::TryGetFunctionPrototype(Register function, |
| 2706 | Register result, |
| 2707 | Label* miss) { |
| 2708 | // Check that the receiver isn't a smi. |
| 2709 | testl(function, Immediate(kSmiTagMask)); |
| 2710 | j(zero, miss); |
| 2711 | |
| 2712 | // Check that the function really is a function. |
| 2713 | CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 2714 | j(not_equal, miss); |
| 2715 | |
| 2716 | // Make sure that the function has an instance prototype. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2717 | Label non_instance; |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2718 | testb(FieldOperand(result, Map::kBitFieldOffset), |
| 2719 | Immediate(1 << Map::kHasNonInstancePrototype)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2720 | j(not_zero, &non_instance, Label::kNear); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2721 | |
| 2722 | // Get the prototype or initial map from the function. |
| 2723 | movq(result, |
| 2724 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2725 | |
| 2726 | // If the prototype or initial map is the hole, don't return it and |
| 2727 | // simply miss the cache instead. This will allow us to allocate a |
| 2728 | // prototype object on-demand in the runtime system. |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2729 | CompareRoot(result, Heap::kTheHoleValueRootIndex); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2730 | j(equal, miss); |
| 2731 | |
| 2732 | // If the function does not have an initial map, we're done. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2733 | Label done; |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2734 | CmpObjectType(result, MAP_TYPE, kScratchRegister); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2735 | j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2736 | |
| 2737 | // Get the prototype from the initial map. |
| 2738 | movq(result, FieldOperand(result, Map::kPrototypeOffset)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2739 | jmp(&done, Label::kNear); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2740 | |
| 2741 | // Non-instance prototype: Fetch prototype from constructor field |
| 2742 | // in initial map. |
| 2743 | bind(&non_instance); |
| 2744 | movq(result, FieldOperand(result, Map::kConstructorOffset)); |
| 2745 | |
| 2746 | // All done. |
| 2747 | bind(&done); |
| 2748 | } |
| 2749 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2750 | |
| 2751 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 2752 | if (FLAG_native_code_counters && counter->Enabled()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2753 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
ager@chromium.org | a9aa5fa | 2011-04-13 08:46:07 +0000 | [diff] [blame] | 2754 | movl(counter_operand, Immediate(value)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2755 | } |
| 2756 | } |
| 2757 | |
| 2758 | |
| 2759 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
| 2760 | ASSERT(value > 0); |
| 2761 | if (FLAG_native_code_counters && counter->Enabled()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2762 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2763 | if (value == 1) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2764 | incl(counter_operand); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2765 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2766 | addl(counter_operand, Immediate(value)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2767 | } |
| 2768 | } |
| 2769 | } |
| 2770 | |
| 2771 | |
| 2772 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
| 2773 | ASSERT(value > 0); |
| 2774 | if (FLAG_native_code_counters && counter->Enabled()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2775 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2776 | if (value == 1) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2777 | decl(counter_operand); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2778 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2779 | subl(counter_operand, Immediate(value)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2780 | } |
| 2781 | } |
| 2782 | } |
| 2783 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 2784 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2785 | #ifdef ENABLE_DEBUGGER_SUPPORT |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2786 | void MacroAssembler::DebugBreak() { |
| 2787 | ASSERT(allow_stub_calls()); |
lrn@chromium.org | 5d00b60 | 2011-01-05 09:51:43 +0000 | [diff] [blame] | 2788 | Set(rax, 0); // No arguments. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2789 | LoadAddress(rbx, ExternalReference(Runtime::kDebugBreak, isolate())); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2790 | CEntryStub ces(1); |
| 2791 | Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2792 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2793 | #endif // ENABLE_DEBUGGER_SUPPORT |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2794 | |
| 2795 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2796 | void MacroAssembler::SetCallKind(Register dst, CallKind call_kind) { |
| 2797 | // This macro takes the dst register to make the code more readable |
| 2798 | // at the call sites. However, the dst register has to be rcx to |
| 2799 | // follow the calling convention which requires the call type to be |
| 2800 | // in rcx. |
| 2801 | ASSERT(dst.is(rcx)); |
| 2802 | if (call_kind == CALL_AS_FUNCTION) { |
| 2803 | LoadSmiConstant(dst, Smi::FromInt(1)); |
| 2804 | } else { |
| 2805 | LoadSmiConstant(dst, Smi::FromInt(0)); |
| 2806 | } |
| 2807 | } |
| 2808 | |
| 2809 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2810 | void MacroAssembler::InvokeCode(Register code, |
| 2811 | const ParameterCount& expected, |
| 2812 | const ParameterCount& actual, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2813 | InvokeFlag flag, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2814 | const CallWrapper& call_wrapper, |
| 2815 | CallKind call_kind) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2816 | Label done; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2817 | InvokePrologue(expected, |
| 2818 | actual, |
| 2819 | Handle<Code>::null(), |
| 2820 | code, |
| 2821 | &done, |
| 2822 | flag, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2823 | Label::kNear, |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2824 | call_wrapper, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2825 | call_kind); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2826 | if (flag == CALL_FUNCTION) { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 2827 | call_wrapper.BeforeCall(CallSize(code)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2828 | SetCallKind(rcx, call_kind); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2829 | call(code); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 2830 | call_wrapper.AfterCall(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2831 | } else { |
| 2832 | ASSERT(flag == JUMP_FUNCTION); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2833 | SetCallKind(rcx, call_kind); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2834 | jmp(code); |
| 2835 | } |
| 2836 | bind(&done); |
| 2837 | } |
| 2838 | |
| 2839 | |
| 2840 | void MacroAssembler::InvokeCode(Handle<Code> code, |
| 2841 | const ParameterCount& expected, |
| 2842 | const ParameterCount& actual, |
| 2843 | RelocInfo::Mode rmode, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2844 | InvokeFlag flag, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2845 | const CallWrapper& call_wrapper, |
| 2846 | CallKind call_kind) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2847 | Label done; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2848 | Register dummy = rax; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2849 | InvokePrologue(expected, |
| 2850 | actual, |
| 2851 | code, |
| 2852 | dummy, |
| 2853 | &done, |
| 2854 | flag, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2855 | Label::kNear, |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2856 | call_wrapper, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2857 | call_kind); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2858 | if (flag == CALL_FUNCTION) { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 2859 | call_wrapper.BeforeCall(CallSize(code)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2860 | SetCallKind(rcx, call_kind); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2861 | Call(code, rmode); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 2862 | call_wrapper.AfterCall(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2863 | } else { |
| 2864 | ASSERT(flag == JUMP_FUNCTION); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2865 | SetCallKind(rcx, call_kind); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2866 | Jump(code, rmode); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2867 | } |
| 2868 | bind(&done); |
| 2869 | } |
| 2870 | |
| 2871 | |
| 2872 | void MacroAssembler::InvokeFunction(Register function, |
| 2873 | const ParameterCount& actual, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2874 | InvokeFlag flag, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2875 | const CallWrapper& call_wrapper, |
| 2876 | CallKind call_kind) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2877 | ASSERT(function.is(rdi)); |
| 2878 | movq(rdx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 2879 | movq(rsi, FieldOperand(function, JSFunction::kContextOffset)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2880 | movsxlq(rbx, |
| 2881 | FieldOperand(rdx, SharedFunctionInfo::kFormalParameterCountOffset)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2882 | // Advances rdx to the end of the Code object header, to the start of |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2883 | // the executable code. |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 2884 | movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2885 | |
| 2886 | ParameterCount expected(rbx); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2887 | InvokeCode(rdx, expected, actual, flag, call_wrapper, call_kind); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2888 | } |
| 2889 | |
| 2890 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2891 | void MacroAssembler::InvokeFunction(JSFunction* function, |
| 2892 | const ParameterCount& actual, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2893 | InvokeFlag flag, |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2894 | const CallWrapper& call_wrapper, |
| 2895 | CallKind call_kind) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2896 | ASSERT(function->is_compiled()); |
| 2897 | // Get the function and setup the context. |
| 2898 | Move(rdi, Handle<JSFunction>(function)); |
| 2899 | movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 2900 | |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2901 | if (V8::UseCrankshaft()) { |
| 2902 | // Since Crankshaft can recompile a function, we need to load |
| 2903 | // the Code object every time we call the function. |
| 2904 | movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
| 2905 | ParameterCount expected(function->shared()->formal_parameter_count()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2906 | InvokeCode(rdx, expected, actual, flag, call_wrapper, call_kind); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2907 | } else { |
| 2908 | // Invoke the cached code. |
| 2909 | Handle<Code> code(function->code()); |
| 2910 | ParameterCount expected(function->shared()->formal_parameter_count()); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2911 | InvokeCode(code, |
| 2912 | expected, |
| 2913 | actual, |
| 2914 | RelocInfo::CODE_TARGET, |
| 2915 | flag, |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2916 | call_wrapper, |
| 2917 | call_kind); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2918 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2919 | } |
| 2920 | |
| 2921 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2922 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 2923 | const ParameterCount& actual, |
| 2924 | Handle<Code> code_constant, |
| 2925 | Register code_register, |
| 2926 | Label* done, |
| 2927 | InvokeFlag flag, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2928 | Label::Distance near_jump, |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2929 | const CallWrapper& call_wrapper, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2930 | CallKind call_kind) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2931 | bool definitely_matches = false; |
| 2932 | Label invoke; |
| 2933 | if (expected.is_immediate()) { |
| 2934 | ASSERT(actual.is_immediate()); |
| 2935 | if (expected.immediate() == actual.immediate()) { |
| 2936 | definitely_matches = true; |
| 2937 | } else { |
| 2938 | Set(rax, actual.immediate()); |
| 2939 | if (expected.immediate() == |
| 2940 | SharedFunctionInfo::kDontAdaptArgumentsSentinel) { |
| 2941 | // Don't worry about adapting arguments for built-ins that |
| 2942 | // don't want that done. Skip adaption code by making it look |
| 2943 | // like we have a match between expected and actual number of |
| 2944 | // arguments. |
| 2945 | definitely_matches = true; |
| 2946 | } else { |
| 2947 | Set(rbx, expected.immediate()); |
| 2948 | } |
| 2949 | } |
| 2950 | } else { |
| 2951 | if (actual.is_immediate()) { |
| 2952 | // Expected is in register, actual is immediate. This is the |
| 2953 | // case when we invoke function values without going through the |
| 2954 | // IC mechanism. |
| 2955 | cmpq(expected.reg(), Immediate(actual.immediate())); |
| 2956 | j(equal, &invoke, Label::kNear); |
| 2957 | ASSERT(expected.reg().is(rbx)); |
| 2958 | Set(rax, actual.immediate()); |
| 2959 | } else if (!expected.reg().is(actual.reg())) { |
| 2960 | // Both expected and actual are in (different) registers. This |
| 2961 | // is the case when we invoke functions using call and apply. |
| 2962 | cmpq(expected.reg(), actual.reg()); |
| 2963 | j(equal, &invoke, Label::kNear); |
| 2964 | ASSERT(actual.reg().is(rax)); |
| 2965 | ASSERT(expected.reg().is(rbx)); |
| 2966 | } |
| 2967 | } |
| 2968 | |
| 2969 | if (!definitely_matches) { |
| 2970 | Handle<Code> adaptor = isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
| 2971 | if (!code_constant.is_null()) { |
| 2972 | movq(rdx, code_constant, RelocInfo::EMBEDDED_OBJECT); |
| 2973 | addq(rdx, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 2974 | } else if (!code_register.is(rdx)) { |
| 2975 | movq(rdx, code_register); |
| 2976 | } |
| 2977 | |
| 2978 | if (flag == CALL_FUNCTION) { |
| 2979 | call_wrapper.BeforeCall(CallSize(adaptor)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2980 | SetCallKind(rcx, call_kind); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2981 | Call(adaptor, RelocInfo::CODE_TARGET); |
| 2982 | call_wrapper.AfterCall(); |
| 2983 | jmp(done, near_jump); |
| 2984 | } else { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2985 | SetCallKind(rcx, call_kind); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2986 | Jump(adaptor, RelocInfo::CODE_TARGET); |
| 2987 | } |
| 2988 | bind(&invoke); |
| 2989 | } |
| 2990 | } |
| 2991 | |
| 2992 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2993 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
| 2994 | push(rbp); |
| 2995 | movq(rbp, rsp); |
| 2996 | push(rsi); // Context. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2997 | Push(Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2998 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 2999 | push(kScratchRegister); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3000 | if (emit_debug_code()) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3001 | movq(kScratchRegister, |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3002 | isolate()->factory()->undefined_value(), |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3003 | RelocInfo::EMBEDDED_OBJECT); |
| 3004 | cmpq(Operand(rsp, 0), kScratchRegister); |
| 3005 | Check(not_equal, "code object not properly patched"); |
| 3006 | } |
| 3007 | } |
| 3008 | |
| 3009 | |
| 3010 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3011 | if (emit_debug_code()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 3012 | Move(kScratchRegister, Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3013 | cmpq(Operand(rbp, StandardFrameConstants::kMarkerOffset), kScratchRegister); |
| 3014 | Check(equal, "stack frame types must match"); |
| 3015 | } |
| 3016 | movq(rsp, rbp); |
| 3017 | pop(rbp); |
| 3018 | } |
| 3019 | |
| 3020 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 3021 | void MacroAssembler::EnterExitFramePrologue(bool save_rax) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3022 | // Setup the frame structure on the stack. |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 3023 | // All constants are relative to the frame pointer of the exit frame. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3024 | ASSERT(ExitFrameConstants::kCallerSPDisplacement == +2 * kPointerSize); |
| 3025 | ASSERT(ExitFrameConstants::kCallerPCOffset == +1 * kPointerSize); |
| 3026 | ASSERT(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize); |
| 3027 | push(rbp); |
| 3028 | movq(rbp, rsp); |
| 3029 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 3030 | // Reserve room for entry stack pointer and push the code object. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 3031 | ASSERT(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 3032 | push(Immediate(0)); // Saved entry sp, patched before call. |
| 3033 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 3034 | push(kScratchRegister); // Accessed from EditFrame::code_slot. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3035 | |
| 3036 | // Save the frame pointer and the context in top. |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3037 | if (save_rax) { |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 3038 | movq(r14, rax); // Backup rax in callee-save register. |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3039 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3040 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3041 | Store(ExternalReference(Isolate::k_c_entry_fp_address, isolate()), rbp); |
| 3042 | Store(ExternalReference(Isolate::k_context_address, isolate()), rsi); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3043 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3044 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 3045 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3046 | void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, |
| 3047 | bool save_doubles) { |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3048 | #ifdef _WIN64 |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3049 | const int kShadowSpace = 4; |
| 3050 | arg_stack_space += kShadowSpace; |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3051 | #endif |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3052 | // Optionally save all XMM registers. |
| 3053 | if (save_doubles) { |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3054 | int space = XMMRegister::kNumRegisters * kDoubleSize + |
| 3055 | arg_stack_space * kPointerSize; |
| 3056 | subq(rsp, Immediate(space)); |
| 3057 | int offset = -2 * kPointerSize; |
| 3058 | for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) { |
| 3059 | XMMRegister reg = XMMRegister::FromAllocationIndex(i); |
| 3060 | movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); |
| 3061 | } |
| 3062 | } else if (arg_stack_space > 0) { |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 3063 | subq(rsp, Immediate(arg_stack_space * kPointerSize)); |
| 3064 | } |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3065 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3066 | // Get the required frame alignment for the OS. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3067 | const int kFrameAlignment = OS::ActivationFrameAlignment(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3068 | if (kFrameAlignment > 0) { |
| 3069 | ASSERT(IsPowerOf2(kFrameAlignment)); |
ager@chromium.org | a9aa5fa | 2011-04-13 08:46:07 +0000 | [diff] [blame] | 3070 | ASSERT(is_int8(kFrameAlignment)); |
| 3071 | and_(rsp, Immediate(-kFrameAlignment)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3072 | } |
| 3073 | |
| 3074 | // Patch the saved entry sp. |
| 3075 | movq(Operand(rbp, ExitFrameConstants::kSPOffset), rsp); |
| 3076 | } |
| 3077 | |
| 3078 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3079 | void MacroAssembler::EnterExitFrame(int arg_stack_space, bool save_doubles) { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 3080 | EnterExitFramePrologue(true); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3081 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3082 | // Setup argv in callee-saved register r15. It is reused in LeaveExitFrame, |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3083 | // so it must be retained across the C-call. |
| 3084 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3085 | lea(r15, Operand(rbp, r14, times_pointer_size, offset)); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3086 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3087 | EnterExitFrameEpilogue(arg_stack_space, save_doubles); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3088 | } |
| 3089 | |
| 3090 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 3091 | void MacroAssembler::EnterApiExitFrame(int arg_stack_space) { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 3092 | EnterExitFramePrologue(false); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3093 | EnterExitFrameEpilogue(arg_stack_space, false); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 3094 | } |
| 3095 | |
| 3096 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3097 | void MacroAssembler::LeaveExitFrame(bool save_doubles) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3098 | // Registers: |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3099 | // r15 : argv |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3100 | if (save_doubles) { |
| 3101 | int offset = -2 * kPointerSize; |
| 3102 | for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) { |
| 3103 | XMMRegister reg = XMMRegister::FromAllocationIndex(i); |
| 3104 | movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize))); |
| 3105 | } |
| 3106 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3107 | // Get the return address from the stack and restore the frame pointer. |
| 3108 | movq(rcx, Operand(rbp, 1 * kPointerSize)); |
| 3109 | movq(rbp, Operand(rbp, 0 * kPointerSize)); |
| 3110 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3111 | // Drop everything up to and including the arguments and the receiver |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3112 | // from the caller stack. |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3113 | lea(rsp, Operand(r15, 1 * kPointerSize)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3114 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 3115 | // Push the return address to get ready to return. |
| 3116 | push(rcx); |
| 3117 | |
| 3118 | LeaveExitFrameEpilogue(); |
| 3119 | } |
| 3120 | |
| 3121 | |
| 3122 | void MacroAssembler::LeaveApiExitFrame() { |
| 3123 | movq(rsp, rbp); |
| 3124 | pop(rbp); |
| 3125 | |
| 3126 | LeaveExitFrameEpilogue(); |
| 3127 | } |
| 3128 | |
| 3129 | |
| 3130 | void MacroAssembler::LeaveExitFrameEpilogue() { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3131 | // Restore current context from top and clear it in debug mode. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3132 | ExternalReference context_address(Isolate::k_context_address, isolate()); |
| 3133 | Operand context_operand = ExternalOperand(context_address); |
| 3134 | movq(rsi, context_operand); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3135 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3136 | movq(context_operand, Immediate(0)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3137 | #endif |
| 3138 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3139 | // Clear the top frame. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3140 | ExternalReference c_entry_fp_address(Isolate::k_c_entry_fp_address, |
| 3141 | isolate()); |
| 3142 | Operand c_entry_fp_operand = ExternalOperand(c_entry_fp_address); |
| 3143 | movq(c_entry_fp_operand, Immediate(0)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 3144 | } |
| 3145 | |
| 3146 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3147 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 3148 | Register scratch, |
| 3149 | Label* miss) { |
| 3150 | Label same_contexts; |
| 3151 | |
| 3152 | ASSERT(!holder_reg.is(scratch)); |
| 3153 | ASSERT(!scratch.is(kScratchRegister)); |
| 3154 | // Load current lexical context from the stack frame. |
| 3155 | movq(scratch, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 3156 | |
| 3157 | // When generating debug code, make sure the lexical context is set. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3158 | if (emit_debug_code()) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3159 | cmpq(scratch, Immediate(0)); |
| 3160 | Check(not_equal, "we should not have an empty lexical context"); |
| 3161 | } |
| 3162 | // Load the global context of the current context. |
| 3163 | int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 3164 | movq(scratch, FieldOperand(scratch, offset)); |
| 3165 | movq(scratch, FieldOperand(scratch, GlobalObject::kGlobalContextOffset)); |
| 3166 | |
| 3167 | // Check the context is a global context. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3168 | if (emit_debug_code()) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3169 | Cmp(FieldOperand(scratch, HeapObject::kMapOffset), |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3170 | isolate()->factory()->global_context_map()); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3171 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 3172 | } |
| 3173 | |
| 3174 | // Check if both contexts are the same. |
| 3175 | cmpq(scratch, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
| 3176 | j(equal, &same_contexts); |
| 3177 | |
| 3178 | // Compare security tokens. |
| 3179 | // Check that the security token in the calling global object is |
| 3180 | // compatible with the security token in the receiving global |
| 3181 | // object. |
| 3182 | |
| 3183 | // Check the context is a global context. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3184 | if (emit_debug_code()) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3185 | // Preserve original value of holder_reg. |
| 3186 | push(holder_reg); |
| 3187 | movq(holder_reg, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3188 | CompareRoot(holder_reg, Heap::kNullValueRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3189 | Check(not_equal, "JSGlobalProxy::context() should not be null."); |
| 3190 | |
| 3191 | // Read the first word and compare to global_context_map(), |
| 3192 | movq(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3193 | CompareRoot(holder_reg, Heap::kGlobalContextMapRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3194 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 3195 | pop(holder_reg); |
| 3196 | } |
| 3197 | |
| 3198 | movq(kScratchRegister, |
| 3199 | FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 3200 | int token_offset = |
| 3201 | Context::kHeaderSize + Context::SECURITY_TOKEN_INDEX * kPointerSize; |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 3202 | movq(scratch, FieldOperand(scratch, token_offset)); |
| 3203 | cmpq(scratch, FieldOperand(kScratchRegister, token_offset)); |
| 3204 | j(not_equal, miss); |
| 3205 | |
| 3206 | bind(&same_contexts); |
| 3207 | } |
| 3208 | |
| 3209 | |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 3210 | void MacroAssembler::LoadFromNumberDictionary(Label* miss, |
| 3211 | Register elements, |
| 3212 | Register key, |
| 3213 | Register r0, |
| 3214 | Register r1, |
| 3215 | Register r2, |
| 3216 | Register result) { |
| 3217 | // Register use: |
| 3218 | // |
| 3219 | // elements - holds the slow-case elements of the receiver on entry. |
| 3220 | // Unchanged unless 'result' is the same register. |
| 3221 | // |
| 3222 | // key - holds the smi key on entry. |
| 3223 | // Unchanged unless 'result' is the same register. |
| 3224 | // |
| 3225 | // Scratch registers: |
| 3226 | // |
| 3227 | // r0 - holds the untagged key on entry and holds the hash once computed. |
| 3228 | // |
| 3229 | // r1 - used to hold the capacity mask of the dictionary |
| 3230 | // |
| 3231 | // r2 - used for the index into the dictionary. |
| 3232 | // |
| 3233 | // result - holds the result on exit if the load succeeded. |
| 3234 | // Allowed to be the same as 'key' or 'result'. |
| 3235 | // Unchanged on bailout so 'key' or 'result' can be used |
| 3236 | // in further computation. |
| 3237 | |
| 3238 | Label done; |
| 3239 | |
| 3240 | // Compute the hash code from the untagged key. This must be kept in sync |
| 3241 | // with ComputeIntegerHash in utils.h. |
| 3242 | // |
| 3243 | // hash = ~hash + (hash << 15); |
| 3244 | movl(r1, r0); |
| 3245 | notl(r0); |
| 3246 | shll(r1, Immediate(15)); |
| 3247 | addl(r0, r1); |
| 3248 | // hash = hash ^ (hash >> 12); |
| 3249 | movl(r1, r0); |
| 3250 | shrl(r1, Immediate(12)); |
| 3251 | xorl(r0, r1); |
| 3252 | // hash = hash + (hash << 2); |
| 3253 | leal(r0, Operand(r0, r0, times_4, 0)); |
| 3254 | // hash = hash ^ (hash >> 4); |
| 3255 | movl(r1, r0); |
| 3256 | shrl(r1, Immediate(4)); |
| 3257 | xorl(r0, r1); |
| 3258 | // hash = hash * 2057; |
| 3259 | imull(r0, r0, Immediate(2057)); |
| 3260 | // hash = hash ^ (hash >> 16); |
| 3261 | movl(r1, r0); |
| 3262 | shrl(r1, Immediate(16)); |
| 3263 | xorl(r0, r1); |
| 3264 | |
| 3265 | // Compute capacity mask. |
| 3266 | SmiToInteger32(r1, |
| 3267 | FieldOperand(elements, NumberDictionary::kCapacityOffset)); |
| 3268 | decl(r1); |
| 3269 | |
| 3270 | // Generate an unrolled loop that performs a few probes before giving up. |
| 3271 | const int kProbes = 4; |
| 3272 | for (int i = 0; i < kProbes; i++) { |
| 3273 | // Use r2 for index calculations and keep the hash intact in r0. |
| 3274 | movq(r2, r0); |
| 3275 | // Compute the masked index: (hash + i + i * i) & mask. |
| 3276 | if (i > 0) { |
| 3277 | addl(r2, Immediate(NumberDictionary::GetProbeOffset(i))); |
| 3278 | } |
| 3279 | and_(r2, r1); |
| 3280 | |
| 3281 | // Scale the index by multiplying by the entry size. |
| 3282 | ASSERT(NumberDictionary::kEntrySize == 3); |
| 3283 | lea(r2, Operand(r2, r2, times_2, 0)); // r2 = r2 * 3 |
| 3284 | |
| 3285 | // Check if the key matches. |
| 3286 | cmpq(key, FieldOperand(elements, |
| 3287 | r2, |
| 3288 | times_pointer_size, |
| 3289 | NumberDictionary::kElementsStartOffset)); |
| 3290 | if (i != (kProbes - 1)) { |
| 3291 | j(equal, &done); |
| 3292 | } else { |
| 3293 | j(not_equal, miss); |
| 3294 | } |
| 3295 | } |
| 3296 | |
| 3297 | bind(&done); |
| 3298 | // Check that the value is a normal propety. |
| 3299 | const int kDetailsOffset = |
| 3300 | NumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
| 3301 | ASSERT_EQ(NORMAL, 0); |
| 3302 | Test(FieldOperand(elements, r2, times_pointer_size, kDetailsOffset), |
| 3303 | Smi::FromInt(PropertyDetails::TypeField::mask())); |
| 3304 | j(not_zero, miss); |
| 3305 | |
| 3306 | // Get the value at the masked, scaled index. |
| 3307 | const int kValueOffset = |
| 3308 | NumberDictionary::kElementsStartOffset + kPointerSize; |
| 3309 | movq(result, FieldOperand(elements, r2, times_pointer_size, kValueOffset)); |
| 3310 | } |
| 3311 | |
| 3312 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3313 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3314 | Register scratch, |
| 3315 | AllocationFlags flags) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3316 | ExternalReference new_space_allocation_top = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3317 | ExternalReference::new_space_allocation_top_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3318 | |
| 3319 | // Just return if allocation top is already known. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3320 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3321 | // No use of scratch if allocation top is provided. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3322 | ASSERT(!scratch.is_valid()); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3323 | #ifdef DEBUG |
| 3324 | // Assert that result actually contains top on entry. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3325 | Operand top_operand = ExternalOperand(new_space_allocation_top); |
| 3326 | cmpq(result, top_operand); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3327 | Check(equal, "Unexpected allocation top"); |
| 3328 | #endif |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3329 | return; |
| 3330 | } |
| 3331 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3332 | // Move address of new object to result. Use scratch register if available, |
| 3333 | // and keep address in scratch until call to UpdateAllocationTopHelper. |
| 3334 | if (scratch.is_valid()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3335 | LoadAddress(scratch, new_space_allocation_top); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3336 | movq(result, Operand(scratch, 0)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3337 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3338 | Load(result, new_space_allocation_top); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3339 | } |
| 3340 | } |
| 3341 | |
| 3342 | |
| 3343 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
| 3344 | Register scratch) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3345 | if (emit_debug_code()) { |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 3346 | testq(result_end, Immediate(kObjectAlignmentMask)); |
| 3347 | Check(zero, "Unaligned allocation in new space"); |
| 3348 | } |
| 3349 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3350 | ExternalReference new_space_allocation_top = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3351 | ExternalReference::new_space_allocation_top_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3352 | |
| 3353 | // Update new top. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3354 | if (scratch.is_valid()) { |
| 3355 | // Scratch already contains address of allocation top. |
| 3356 | movq(Operand(scratch, 0), result_end); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3357 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3358 | Store(new_space_allocation_top, result_end); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3359 | } |
| 3360 | } |
| 3361 | |
| 3362 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 3363 | void MacroAssembler::AllocateInNewSpace(int object_size, |
| 3364 | Register result, |
| 3365 | Register result_end, |
| 3366 | Register scratch, |
| 3367 | Label* gc_required, |
| 3368 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 3369 | if (!FLAG_inline_new) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3370 | if (emit_debug_code()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 3371 | // Trash the registers to simulate an allocation failure. |
| 3372 | movl(result, Immediate(0x7091)); |
| 3373 | if (result_end.is_valid()) { |
| 3374 | movl(result_end, Immediate(0x7191)); |
| 3375 | } |
| 3376 | if (scratch.is_valid()) { |
| 3377 | movl(scratch, Immediate(0x7291)); |
| 3378 | } |
| 3379 | } |
| 3380 | jmp(gc_required); |
| 3381 | return; |
| 3382 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3383 | ASSERT(!result.is(result_end)); |
| 3384 | |
| 3385 | // Load address of new object into result. |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 3386 | LoadAllocationTopHelper(result, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3387 | |
| 3388 | // Calculate new top and bail out if new space is exhausted. |
| 3389 | ExternalReference new_space_allocation_limit = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3390 | ExternalReference::new_space_allocation_limit_address(isolate()); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3391 | |
| 3392 | Register top_reg = result_end.is_valid() ? result_end : result; |
| 3393 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 3394 | if (!top_reg.is(result)) { |
| 3395 | movq(top_reg, result); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3396 | } |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 3397 | addq(top_reg, Immediate(object_size)); |
| 3398 | j(carry, gc_required); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3399 | Operand limit_operand = ExternalOperand(new_space_allocation_limit); |
| 3400 | cmpq(top_reg, limit_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3401 | j(above, gc_required); |
| 3402 | |
| 3403 | // Update allocation top. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3404 | UpdateAllocationTopHelper(top_reg, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3405 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3406 | if (top_reg.is(result)) { |
| 3407 | if ((flags & TAG_OBJECT) != 0) { |
| 3408 | subq(result, Immediate(object_size - kHeapObjectTag)); |
| 3409 | } else { |
| 3410 | subq(result, Immediate(object_size)); |
| 3411 | } |
| 3412 | } else if ((flags & TAG_OBJECT) != 0) { |
| 3413 | // Tag the result if requested. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3414 | addq(result, Immediate(kHeapObjectTag)); |
| 3415 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3416 | } |
| 3417 | |
| 3418 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 3419 | void MacroAssembler::AllocateInNewSpace(int header_size, |
| 3420 | ScaleFactor element_size, |
| 3421 | Register element_count, |
| 3422 | Register result, |
| 3423 | Register result_end, |
| 3424 | Register scratch, |
| 3425 | Label* gc_required, |
| 3426 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 3427 | if (!FLAG_inline_new) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3428 | if (emit_debug_code()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 3429 | // Trash the registers to simulate an allocation failure. |
| 3430 | movl(result, Immediate(0x7091)); |
| 3431 | movl(result_end, Immediate(0x7191)); |
| 3432 | if (scratch.is_valid()) { |
| 3433 | movl(scratch, Immediate(0x7291)); |
| 3434 | } |
| 3435 | // Register element_count is not modified by the function. |
| 3436 | } |
| 3437 | jmp(gc_required); |
| 3438 | return; |
| 3439 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3440 | ASSERT(!result.is(result_end)); |
| 3441 | |
| 3442 | // Load address of new object into result. |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 3443 | LoadAllocationTopHelper(result, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3444 | |
| 3445 | // Calculate new top and bail out if new space is exhausted. |
| 3446 | ExternalReference new_space_allocation_limit = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3447 | ExternalReference::new_space_allocation_limit_address(isolate()); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 3448 | |
| 3449 | // We assume that element_count*element_size + header_size does not |
| 3450 | // overflow. |
| 3451 | lea(result_end, Operand(element_count, element_size, header_size)); |
| 3452 | addq(result_end, result); |
| 3453 | j(carry, gc_required); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3454 | Operand limit_operand = ExternalOperand(new_space_allocation_limit); |
| 3455 | cmpq(result_end, limit_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3456 | j(above, gc_required); |
| 3457 | |
| 3458 | // Update allocation top. |
| 3459 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3460 | |
| 3461 | // Tag the result if requested. |
| 3462 | if ((flags & TAG_OBJECT) != 0) { |
| 3463 | addq(result, Immediate(kHeapObjectTag)); |
| 3464 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3465 | } |
| 3466 | |
| 3467 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 3468 | void MacroAssembler::AllocateInNewSpace(Register object_size, |
| 3469 | Register result, |
| 3470 | Register result_end, |
| 3471 | Register scratch, |
| 3472 | Label* gc_required, |
| 3473 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 3474 | if (!FLAG_inline_new) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3475 | if (emit_debug_code()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 3476 | // Trash the registers to simulate an allocation failure. |
| 3477 | movl(result, Immediate(0x7091)); |
| 3478 | movl(result_end, Immediate(0x7191)); |
| 3479 | if (scratch.is_valid()) { |
| 3480 | movl(scratch, Immediate(0x7291)); |
| 3481 | } |
| 3482 | // object_size is left unchanged by this function. |
| 3483 | } |
| 3484 | jmp(gc_required); |
| 3485 | return; |
| 3486 | } |
| 3487 | ASSERT(!result.is(result_end)); |
| 3488 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3489 | // Load address of new object into result. |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 3490 | LoadAllocationTopHelper(result, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3491 | |
| 3492 | // Calculate new top and bail out if new space is exhausted. |
| 3493 | ExternalReference new_space_allocation_limit = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3494 | ExternalReference::new_space_allocation_limit_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3495 | if (!object_size.is(result_end)) { |
| 3496 | movq(result_end, object_size); |
| 3497 | } |
| 3498 | addq(result_end, result); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 3499 | j(carry, gc_required); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3500 | Operand limit_operand = ExternalOperand(new_space_allocation_limit); |
| 3501 | cmpq(result_end, limit_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3502 | j(above, gc_required); |
| 3503 | |
| 3504 | // Update allocation top. |
| 3505 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 3506 | |
| 3507 | // Tag the result if requested. |
| 3508 | if ((flags & TAG_OBJECT) != 0) { |
| 3509 | addq(result, Immediate(kHeapObjectTag)); |
| 3510 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3511 | } |
| 3512 | |
| 3513 | |
| 3514 | void MacroAssembler::UndoAllocationInNewSpace(Register object) { |
| 3515 | ExternalReference new_space_allocation_top = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3516 | ExternalReference::new_space_allocation_top_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3517 | |
| 3518 | // Make sure the object has no tag before resetting top. |
| 3519 | and_(object, Immediate(~kHeapObjectTagMask)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3520 | Operand top_operand = ExternalOperand(new_space_allocation_top); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3521 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3522 | cmpq(object, top_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3523 | Check(below, "Undo allocation of non allocated memory"); |
| 3524 | #endif |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3525 | movq(top_operand, object); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 3526 | } |
| 3527 | |
| 3528 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 3529 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 3530 | Register scratch, |
| 3531 | Label* gc_required) { |
| 3532 | // Allocate heap number in new space. |
| 3533 | AllocateInNewSpace(HeapNumber::kSize, |
| 3534 | result, |
| 3535 | scratch, |
| 3536 | no_reg, |
| 3537 | gc_required, |
| 3538 | TAG_OBJECT); |
| 3539 | |
| 3540 | // Set the map. |
| 3541 | LoadRoot(kScratchRegister, Heap::kHeapNumberMapRootIndex); |
| 3542 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 3543 | } |
| 3544 | |
| 3545 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3546 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 3547 | Register length, |
| 3548 | Register scratch1, |
| 3549 | Register scratch2, |
| 3550 | Register scratch3, |
| 3551 | Label* gc_required) { |
| 3552 | // Calculate the number of bytes needed for the characters in the string while |
| 3553 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3554 | const int kHeaderAlignment = SeqTwoByteString::kHeaderSize & |
| 3555 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3556 | ASSERT(kShortSize == 2); |
| 3557 | // scratch1 = length * 2 + kObjectAlignmentMask. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3558 | lea(scratch1, Operand(length, length, times_1, kObjectAlignmentMask + |
| 3559 | kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3560 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3561 | if (kHeaderAlignment > 0) { |
| 3562 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 3563 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3564 | |
| 3565 | // Allocate two byte string in new space. |
| 3566 | AllocateInNewSpace(SeqTwoByteString::kHeaderSize, |
| 3567 | times_1, |
| 3568 | scratch1, |
| 3569 | result, |
| 3570 | scratch2, |
| 3571 | scratch3, |
| 3572 | gc_required, |
| 3573 | TAG_OBJECT); |
| 3574 | |
| 3575 | // Set the map, length and hash field. |
| 3576 | LoadRoot(kScratchRegister, Heap::kStringMapRootIndex); |
| 3577 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3578 | Integer32ToSmi(scratch1, length); |
| 3579 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 3580 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3581 | Immediate(String::kEmptyHashField)); |
| 3582 | } |
| 3583 | |
| 3584 | |
| 3585 | void MacroAssembler::AllocateAsciiString(Register result, |
| 3586 | Register length, |
| 3587 | Register scratch1, |
| 3588 | Register scratch2, |
| 3589 | Register scratch3, |
| 3590 | Label* gc_required) { |
| 3591 | // Calculate the number of bytes needed for the characters in the string while |
| 3592 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3593 | const int kHeaderAlignment = SeqAsciiString::kHeaderSize & |
| 3594 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3595 | movl(scratch1, length); |
| 3596 | ASSERT(kCharSize == 1); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3597 | addq(scratch1, Immediate(kObjectAlignmentMask + kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3598 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3599 | if (kHeaderAlignment > 0) { |
| 3600 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 3601 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3602 | |
| 3603 | // Allocate ascii string in new space. |
| 3604 | AllocateInNewSpace(SeqAsciiString::kHeaderSize, |
| 3605 | times_1, |
| 3606 | scratch1, |
| 3607 | result, |
| 3608 | scratch2, |
| 3609 | scratch3, |
| 3610 | gc_required, |
| 3611 | TAG_OBJECT); |
| 3612 | |
| 3613 | // Set the map, length and hash field. |
| 3614 | LoadRoot(kScratchRegister, Heap::kAsciiStringMapRootIndex); |
| 3615 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 3616 | Integer32ToSmi(scratch1, length); |
| 3617 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 3618 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 3619 | Immediate(String::kEmptyHashField)); |
| 3620 | } |
| 3621 | |
| 3622 | |
| 3623 | void MacroAssembler::AllocateConsString(Register result, |
| 3624 | Register scratch1, |
| 3625 | Register scratch2, |
| 3626 | Label* gc_required) { |
| 3627 | // Allocate heap number in new space. |
| 3628 | AllocateInNewSpace(ConsString::kSize, |
| 3629 | result, |
| 3630 | scratch1, |
| 3631 | scratch2, |
| 3632 | gc_required, |
| 3633 | TAG_OBJECT); |
| 3634 | |
| 3635 | // Set the map. The other fields are left uninitialized. |
| 3636 | LoadRoot(kScratchRegister, Heap::kConsStringMapRootIndex); |
| 3637 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 3638 | } |
| 3639 | |
| 3640 | |
| 3641 | void MacroAssembler::AllocateAsciiConsString(Register result, |
| 3642 | Register scratch1, |
| 3643 | Register scratch2, |
| 3644 | Label* gc_required) { |
| 3645 | // Allocate heap number in new space. |
| 3646 | AllocateInNewSpace(ConsString::kSize, |
| 3647 | result, |
| 3648 | scratch1, |
| 3649 | scratch2, |
| 3650 | gc_required, |
| 3651 | TAG_OBJECT); |
| 3652 | |
| 3653 | // Set the map. The other fields are left uninitialized. |
| 3654 | LoadRoot(kScratchRegister, Heap::kConsAsciiStringMapRootIndex); |
| 3655 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 3656 | } |
| 3657 | |
| 3658 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3659 | // Copy memory, byte-by-byte, from source to destination. Not optimized for |
| 3660 | // long or aligned copies. The contents of scratch and length are destroyed. |
| 3661 | // Destination is incremented by length, source, length and scratch are |
| 3662 | // clobbered. |
| 3663 | // A simpler loop is faster on small copies, but slower on large ones. |
| 3664 | // The cld() instruction must have been emitted, to set the direction flag(), |
| 3665 | // before calling this function. |
| 3666 | void MacroAssembler::CopyBytes(Register destination, |
| 3667 | Register source, |
| 3668 | Register length, |
| 3669 | int min_length, |
| 3670 | Register scratch) { |
| 3671 | ASSERT(min_length >= 0); |
| 3672 | if (FLAG_debug_code) { |
| 3673 | cmpl(length, Immediate(min_length)); |
| 3674 | Assert(greater_equal, "Invalid min_length"); |
| 3675 | } |
| 3676 | Label loop, done, short_string, short_loop; |
| 3677 | |
| 3678 | const int kLongStringLimit = 20; |
| 3679 | if (min_length <= kLongStringLimit) { |
| 3680 | cmpl(length, Immediate(kLongStringLimit)); |
| 3681 | j(less_equal, &short_string); |
| 3682 | } |
| 3683 | |
| 3684 | ASSERT(source.is(rsi)); |
| 3685 | ASSERT(destination.is(rdi)); |
| 3686 | ASSERT(length.is(rcx)); |
| 3687 | |
| 3688 | // Because source is 8-byte aligned in our uses of this function, |
| 3689 | // we keep source aligned for the rep movs operation by copying the odd bytes |
| 3690 | // at the end of the ranges. |
| 3691 | movq(scratch, length); |
| 3692 | shrl(length, Immediate(3)); |
| 3693 | repmovsq(); |
| 3694 | // Move remaining bytes of length. |
| 3695 | andl(scratch, Immediate(0x7)); |
| 3696 | movq(length, Operand(source, scratch, times_1, -8)); |
| 3697 | movq(Operand(destination, scratch, times_1, -8), length); |
| 3698 | addq(destination, scratch); |
| 3699 | |
| 3700 | if (min_length <= kLongStringLimit) { |
| 3701 | jmp(&done); |
| 3702 | |
| 3703 | bind(&short_string); |
| 3704 | if (min_length == 0) { |
| 3705 | testl(length, length); |
| 3706 | j(zero, &done); |
| 3707 | } |
| 3708 | lea(scratch, Operand(destination, length, times_1, 0)); |
| 3709 | |
| 3710 | bind(&short_loop); |
| 3711 | movb(length, Operand(source, 0)); |
| 3712 | movb(Operand(destination, 0), length); |
| 3713 | incq(source); |
| 3714 | incq(destination); |
| 3715 | cmpq(destination, scratch); |
| 3716 | j(not_equal, &short_loop); |
| 3717 | |
| 3718 | bind(&done); |
| 3719 | } |
| 3720 | } |
| 3721 | |
| 3722 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 3723 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 3724 | if (context_chain_length > 0) { |
| 3725 | // Move up the chain of contexts to the context containing the slot. |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3726 | movq(dst, Operand(rsi, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 3727 | for (int i = 1; i < context_chain_length; i++) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3728 | movq(dst, Operand(dst, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 3729 | } |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 3730 | } else { |
| 3731 | // Slot is in the current function context. Move it into the |
| 3732 | // destination register in case we store into it (the write barrier |
| 3733 | // cannot be allowed to destroy the context in rsi). |
| 3734 | movq(dst, rsi); |
| 3735 | } |
| 3736 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 3737 | // We should not have found a with context by walking the context |
| 3738 | // chain (i.e., the static scope chain and runtime context chain do |
| 3739 | // not agree). A variable occurring in such a scope should have |
| 3740 | // slot type LOOKUP and not CONTEXT. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3741 | if (emit_debug_code()) { |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 3742 | CompareRoot(FieldOperand(dst, HeapObject::kMapOffset), |
| 3743 | Heap::kWithContextMapRootIndex); |
| 3744 | Check(not_equal, "Variable resolved to with context."); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 3745 | } |
| 3746 | } |
| 3747 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3748 | #ifdef _WIN64 |
| 3749 | static const int kRegisterPassedArguments = 4; |
| 3750 | #else |
| 3751 | static const int kRegisterPassedArguments = 6; |
| 3752 | #endif |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 3753 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3754 | void MacroAssembler::LoadGlobalFunction(int index, Register function) { |
| 3755 | // Load the global or builtins object from the current context. |
| 3756 | movq(function, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 3757 | // Load the global context from the global or builtins object. |
| 3758 | movq(function, FieldOperand(function, GlobalObject::kGlobalContextOffset)); |
| 3759 | // Load the function from the global context. |
| 3760 | movq(function, Operand(function, Context::SlotOffset(index))); |
| 3761 | } |
| 3762 | |
| 3763 | |
| 3764 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 3765 | Register map) { |
| 3766 | // Load the initial map. The global functions all have initial maps. |
| 3767 | movq(map, FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3768 | if (emit_debug_code()) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3769 | Label ok, fail; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3770 | CheckMap(map, isolate()->factory()->meta_map(), &fail, DO_SMI_CHECK); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3771 | jmp(&ok); |
| 3772 | bind(&fail); |
| 3773 | Abort("Global functions must have initial map"); |
| 3774 | bind(&ok); |
| 3775 | } |
| 3776 | } |
| 3777 | |
| 3778 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3779 | int MacroAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 3780 | // On Windows 64 stack slots are reserved by the caller for all arguments |
| 3781 | // including the ones passed in registers, and space is always allocated for |
| 3782 | // the four register arguments even if the function takes fewer than four |
| 3783 | // arguments. |
| 3784 | // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers |
| 3785 | // and the caller does not reserve stack slots for them. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3786 | ASSERT(num_arguments >= 0); |
| 3787 | #ifdef _WIN64 |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3788 | const int kMinimumStackSlots = kRegisterPassedArguments; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 3789 | if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
| 3790 | return num_arguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3791 | #else |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 3792 | if (num_arguments < kRegisterPassedArguments) return 0; |
| 3793 | return num_arguments - kRegisterPassedArguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3794 | #endif |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3795 | } |
| 3796 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 3797 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3798 | void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
| 3799 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 3800 | ASSERT(frame_alignment != 0); |
| 3801 | ASSERT(num_arguments >= 0); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3802 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3803 | // Make stack end at alignment and allocate space for arguments and old rsp. |
| 3804 | movq(kScratchRegister, rsp); |
| 3805 | ASSERT(IsPowerOf2(frame_alignment)); |
| 3806 | int argument_slots_on_stack = |
| 3807 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 3808 | subq(rsp, Immediate((argument_slots_on_stack + 1) * kPointerSize)); |
| 3809 | and_(rsp, Immediate(-frame_alignment)); |
| 3810 | movq(Operand(rsp, argument_slots_on_stack * kPointerSize), kScratchRegister); |
| 3811 | } |
| 3812 | |
| 3813 | |
| 3814 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 3815 | int num_arguments) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3816 | LoadAddress(rax, function); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3817 | CallCFunction(rax, num_arguments); |
| 3818 | } |
| 3819 | |
| 3820 | |
| 3821 | void MacroAssembler::CallCFunction(Register function, int num_arguments) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 3822 | // Check stack alignment. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 3823 | if (emit_debug_code()) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 3824 | CheckStackAlignment(); |
| 3825 | } |
| 3826 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3827 | call(function); |
| 3828 | ASSERT(OS::ActivationFrameAlignment() != 0); |
| 3829 | ASSERT(num_arguments >= 0); |
| 3830 | int argument_slots_on_stack = |
| 3831 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 3832 | movq(rsp, Operand(rsp, argument_slots_on_stack * kPointerSize)); |
| 3833 | } |
| 3834 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 3835 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 3836 | CodePatcher::CodePatcher(byte* address, int size) |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 3837 | : address_(address), |
| 3838 | size_(size), |
| 3839 | masm_(Isolate::Current(), address, size + Assembler::kGap) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 3840 | // Create a new macro assembler pointing to the address of the code to patch. |
| 3841 | // The size is adjusted with kGap on order for the assembler to generate size |
| 3842 | // bytes of instructions without failing with buffer size constraints. |
| 3843 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 3844 | } |
| 3845 | |
| 3846 | |
| 3847 | CodePatcher::~CodePatcher() { |
| 3848 | // Indicate that code has changed. |
| 3849 | CPU::FlushICache(address_, size_); |
| 3850 | |
| 3851 | // Check that the code was patched as expected. |
| 3852 | ASSERT(masm_.pc_ == address_ + size_); |
| 3853 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 3854 | } |
| 3855 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 3856 | } } // namespace v8::internal |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3857 | |
| 3858 | #endif // V8_TARGET_ARCH_X64 |