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" |
| 33 | #include "codegen-inl.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 | |
| 43 | MacroAssembler::MacroAssembler(void* buffer, int size) |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 44 | : Assembler(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), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 47 | root_array_available_(true), |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 48 | code_object_(isolate()->heap()->undefined_value()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 52 | static intptr_t RootRegisterDelta(ExternalReference other, Isolate* isolate) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 53 | Address roots_register_value = kRootRegisterBias + |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 54 | reinterpret_cast<Address>(isolate->heap()->roots_address()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 55 | intptr_t delta = other.address() - roots_register_value; |
| 56 | return delta; |
| 57 | } |
| 58 | |
| 59 | |
| 60 | Operand MacroAssembler::ExternalOperand(ExternalReference target, |
| 61 | Register scratch) { |
| 62 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 63 | intptr_t delta = RootRegisterDelta(target, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 64 | if (is_int32(delta)) { |
| 65 | Serializer::TooLateToEnableNow(); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 66 | return Operand(kRootRegister, static_cast<int32_t>(delta)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 67 | } |
| 68 | } |
| 69 | movq(scratch, target); |
| 70 | return Operand(scratch, 0); |
| 71 | } |
| 72 | |
| 73 | |
| 74 | void MacroAssembler::Load(Register destination, ExternalReference source) { |
| 75 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 76 | intptr_t delta = RootRegisterDelta(source, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 77 | if (is_int32(delta)) { |
| 78 | Serializer::TooLateToEnableNow(); |
| 79 | movq(destination, Operand(kRootRegister, static_cast<int32_t>(delta))); |
| 80 | return; |
| 81 | } |
| 82 | } |
| 83 | // Safe code. |
| 84 | if (destination.is(rax)) { |
| 85 | load_rax(source); |
| 86 | } else { |
| 87 | movq(kScratchRegister, source); |
| 88 | movq(destination, Operand(kScratchRegister, 0)); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | |
| 93 | void MacroAssembler::Store(ExternalReference destination, Register source) { |
| 94 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 95 | intptr_t delta = RootRegisterDelta(destination, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 96 | if (is_int32(delta)) { |
| 97 | Serializer::TooLateToEnableNow(); |
| 98 | movq(Operand(kRootRegister, static_cast<int32_t>(delta)), source); |
| 99 | return; |
| 100 | } |
| 101 | } |
| 102 | // Safe code. |
| 103 | if (source.is(rax)) { |
| 104 | store_rax(destination); |
| 105 | } else { |
| 106 | movq(kScratchRegister, destination); |
| 107 | movq(Operand(kScratchRegister, 0), source); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | |
| 112 | void MacroAssembler::LoadAddress(Register destination, |
| 113 | ExternalReference source) { |
| 114 | if (root_array_available_ && !Serializer::enabled()) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 115 | intptr_t delta = RootRegisterDelta(source, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 116 | if (is_int32(delta)) { |
| 117 | Serializer::TooLateToEnableNow(); |
| 118 | lea(destination, Operand(kRootRegister, static_cast<int32_t>(delta))); |
| 119 | return; |
| 120 | } |
| 121 | } |
| 122 | // Safe code. |
| 123 | movq(destination, source); |
| 124 | } |
| 125 | |
| 126 | |
| 127 | int MacroAssembler::LoadAddressSize(ExternalReference source) { |
| 128 | if (root_array_available_ && !Serializer::enabled()) { |
| 129 | // This calculation depends on the internals of LoadAddress. |
| 130 | // It's correctness is ensured by the asserts in the Call |
| 131 | // instruction below. |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 132 | intptr_t delta = RootRegisterDelta(source, isolate()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 133 | if (is_int32(delta)) { |
| 134 | Serializer::TooLateToEnableNow(); |
| 135 | // Operand is lea(scratch, Operand(kRootRegister, delta)); |
| 136 | // Opcodes : REX.W 8D ModRM Disp8/Disp32 - 4 or 7. |
| 137 | int size = 4; |
| 138 | if (!is_int8(static_cast<int32_t>(delta))) { |
| 139 | size += 3; // Need full four-byte displacement in lea. |
| 140 | } |
| 141 | return size; |
| 142 | } |
| 143 | } |
| 144 | // Size of movq(destination, src); |
| 145 | return 10; |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 146 | } |
| 147 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 148 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 149 | void MacroAssembler::LoadRoot(Register destination, Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 150 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 151 | movq(destination, Operand(kRootRegister, |
| 152 | (index << kPointerSizeLog2) - kRootRegisterBias)); |
| 153 | } |
| 154 | |
| 155 | |
| 156 | void MacroAssembler::LoadRootIndexed(Register destination, |
| 157 | Register variable_offset, |
| 158 | int fixed_offset) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 159 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 160 | movq(destination, |
| 161 | Operand(kRootRegister, |
| 162 | variable_offset, times_pointer_size, |
| 163 | (fixed_offset << kPointerSizeLog2) - kRootRegisterBias)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 167 | void MacroAssembler::StoreRoot(Register source, Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 168 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 169 | movq(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias), |
| 170 | source); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 174 | void MacroAssembler::PushRoot(Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 175 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 176 | push(Operand(kRootRegister, (index << kPointerSizeLog2) - kRootRegisterBias)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 180 | void MacroAssembler::CompareRoot(Register with, Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 181 | ASSERT(root_array_available_); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 182 | cmpq(with, Operand(kRootRegister, |
| 183 | (index << kPointerSizeLog2) - kRootRegisterBias)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 184 | } |
| 185 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 186 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 187 | void MacroAssembler::CompareRoot(const Operand& with, |
| 188 | Heap::RootListIndex index) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 189 | ASSERT(root_array_available_); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 190 | ASSERT(!with.AddressUsesRegister(kScratchRegister)); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 191 | LoadRoot(kScratchRegister, index); |
| 192 | cmpq(with, kScratchRegister); |
| 193 | } |
| 194 | |
| 195 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 196 | void MacroAssembler::RecordWriteHelper(Register object, |
| 197 | Register addr, |
| 198 | Register scratch) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 199 | if (emit_debug_code()) { |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 200 | // Check that the object is not in new space. |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 201 | NearLabel not_in_new_space; |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 202 | InNewSpace(object, scratch, not_equal, ¬_in_new_space); |
| 203 | Abort("new-space object passed to RecordWriteHelper"); |
| 204 | bind(¬_in_new_space); |
| 205 | } |
| 206 | |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 207 | // Compute the page start address from the heap object pointer, and reuse |
| 208 | // the 'object' register for it. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 209 | and_(object, Immediate(~Page::kPageAlignmentMask)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 210 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 211 | // Compute number of region covering addr. See Page::GetRegionNumberForAddress |
| 212 | // method for more details. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 213 | shrl(addr, Immediate(Page::kRegionSizeLog2)); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 214 | andl(addr, Immediate(Page::kPageAlignmentMask >> Page::kRegionSizeLog2)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 215 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 216 | // Set dirty mark for region. |
| 217 | bts(Operand(object, Page::kDirtyFlagOffset), addr); |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 221 | void MacroAssembler::RecordWrite(Register object, |
| 222 | int offset, |
| 223 | Register value, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 224 | Register index) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 225 | // The compiled code assumes that record write doesn't change the |
| 226 | // context register, so we check that none of the clobbered |
| 227 | // registers are rsi. |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 228 | ASSERT(!object.is(rsi) && !value.is(rsi) && !index.is(rsi)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 229 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 230 | // 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] | 231 | // catch stores of smis and stores into the young generation. |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 232 | Label done; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 233 | JumpIfSmi(value, &done); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 234 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 235 | RecordWriteNonSmi(object, offset, value, index); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 236 | bind(&done); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 237 | |
| 238 | // Clobber all input registers when running with the debug-code flag |
| 239 | // turned on to provoke errors. This clobbering repeats the |
| 240 | // clobbering done inside RecordWriteNonSmi but it's necessary to |
| 241 | // avoid having the fast case for smis leave the registers |
| 242 | // unchanged. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 243 | if (emit_debug_code()) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 244 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 245 | movq(value, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 246 | movq(index, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 247 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 251 | void MacroAssembler::RecordWrite(Register object, |
| 252 | Register address, |
| 253 | Register value) { |
| 254 | // The compiled code assumes that record write doesn't change the |
| 255 | // context register, so we check that none of the clobbered |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 256 | // registers are rsi. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 257 | ASSERT(!object.is(rsi) && !value.is(rsi) && !address.is(rsi)); |
| 258 | |
| 259 | // 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] | 260 | // catch stores of smis and stores into the young generation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 261 | Label done; |
| 262 | JumpIfSmi(value, &done); |
| 263 | |
| 264 | InNewSpace(object, value, equal, &done); |
| 265 | |
| 266 | RecordWriteHelper(object, address, value); |
| 267 | |
| 268 | bind(&done); |
| 269 | |
| 270 | // Clobber all input registers when running with the debug-code flag |
| 271 | // turned on to provoke errors. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 272 | if (emit_debug_code()) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 273 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 274 | movq(address, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 275 | movq(value, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 280 | void MacroAssembler::RecordWriteNonSmi(Register object, |
| 281 | int offset, |
| 282 | Register scratch, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 283 | Register index) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 284 | Label done; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 285 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 286 | if (emit_debug_code()) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 287 | NearLabel okay; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 288 | JumpIfNotSmi(object, &okay); |
| 289 | Abort("MacroAssembler::RecordWriteNonSmi cannot deal with smis"); |
| 290 | bind(&okay); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 291 | |
| 292 | if (offset == 0) { |
| 293 | // index must be int32. |
| 294 | Register tmp = index.is(rax) ? rbx : rax; |
| 295 | push(tmp); |
| 296 | movl(tmp, index); |
| 297 | cmpq(tmp, index); |
| 298 | Check(equal, "Index register for RecordWrite must be untagged int32."); |
| 299 | pop(tmp); |
| 300 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 301 | } |
| 302 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 303 | // Test that the object address is not in the new space. We cannot |
| 304 | // update page dirty marks for new space pages. |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 305 | InNewSpace(object, scratch, equal, &done); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 306 | |
whesse@chromium.org | e88a9ed | 2010-04-15 15:07:46 +0000 | [diff] [blame] | 307 | // The offset is relative to a tagged or untagged HeapObject pointer, |
| 308 | // so either offset or offset + kHeapObjectTag must be a |
| 309 | // multiple of kPointerSize. |
| 310 | ASSERT(IsAligned(offset, kPointerSize) || |
| 311 | IsAligned(offset + kHeapObjectTag, kPointerSize)); |
| 312 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 313 | Register dst = index; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 314 | if (offset != 0) { |
| 315 | lea(dst, Operand(object, offset)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 316 | } else { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 317 | // array access: calculate the destination address in the same manner as |
| 318 | // KeyedStoreIC::GenerateGeneric. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 319 | lea(dst, FieldOperand(object, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 320 | index, |
| 321 | times_pointer_size, |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 322 | FixedArray::kHeaderSize)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 323 | } |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 324 | RecordWriteHelper(object, dst, scratch); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 325 | |
| 326 | bind(&done); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 327 | |
| 328 | // Clobber all input registers when running with the debug-code flag |
| 329 | // turned on to provoke errors. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 330 | if (emit_debug_code()) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 331 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 332 | movq(scratch, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 333 | movq(index, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 334 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 335 | } |
| 336 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 337 | void MacroAssembler::Assert(Condition cc, const char* msg) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 338 | if (emit_debug_code()) Check(cc, msg); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 342 | void MacroAssembler::AssertFastElements(Register elements) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 343 | if (emit_debug_code()) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 344 | NearLabel ok; |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 345 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 346 | Heap::kFixedArrayMapRootIndex); |
| 347 | j(equal, &ok); |
| 348 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 349 | Heap::kFixedCOWArrayMapRootIndex); |
| 350 | j(equal, &ok); |
| 351 | Abort("JSObject with fast elements map has slow elements"); |
| 352 | bind(&ok); |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 357 | void MacroAssembler::Check(Condition cc, const char* msg) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 358 | NearLabel L; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 359 | j(cc, &L); |
| 360 | Abort(msg); |
| 361 | // will not return here |
| 362 | bind(&L); |
| 363 | } |
| 364 | |
| 365 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 366 | void MacroAssembler::CheckStackAlignment() { |
| 367 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 368 | int frame_alignment_mask = frame_alignment - 1; |
| 369 | if (frame_alignment > kPointerSize) { |
| 370 | ASSERT(IsPowerOf2(frame_alignment)); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 371 | NearLabel alignment_as_expected; |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 372 | testq(rsp, Immediate(frame_alignment_mask)); |
| 373 | j(zero, &alignment_as_expected); |
| 374 | // Abort if stack is not aligned. |
| 375 | int3(); |
| 376 | bind(&alignment_as_expected); |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 381 | void MacroAssembler::NegativeZeroTest(Register result, |
| 382 | Register op, |
| 383 | Label* then_label) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 384 | NearLabel ok; |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 385 | testl(result, result); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 386 | j(not_zero, &ok); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 387 | testl(op, op); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 388 | j(sign, then_label); |
| 389 | bind(&ok); |
| 390 | } |
| 391 | |
| 392 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 393 | void MacroAssembler::Abort(const char* msg) { |
| 394 | // We want to pass the msg string like a smi to avoid GC |
| 395 | // problems, however msg is not guaranteed to be aligned |
| 396 | // properly. Instead, we pass an aligned pointer that is |
| 397 | // a proper v8 smi, but also pass the alignment difference |
| 398 | // from the real pointer as a smi. |
| 399 | intptr_t p1 = reinterpret_cast<intptr_t>(msg); |
| 400 | intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; |
| 401 | // Note: p0 might not be a valid Smi *value*, but it has a valid Smi tag. |
| 402 | ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); |
| 403 | #ifdef DEBUG |
| 404 | if (msg != NULL) { |
| 405 | RecordComment("Abort message: "); |
| 406 | RecordComment(msg); |
| 407 | } |
| 408 | #endif |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 409 | // Disable stub call restrictions to always allow calls to abort. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 410 | AllowStubCallsScope allow_scope(this, true); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 411 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 412 | push(rax); |
| 413 | movq(kScratchRegister, p0, RelocInfo::NONE); |
| 414 | push(kScratchRegister); |
| 415 | movq(kScratchRegister, |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 416 | reinterpret_cast<intptr_t>(Smi::FromInt(static_cast<int>(p1 - p0))), |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 417 | RelocInfo::NONE); |
| 418 | push(kScratchRegister); |
| 419 | CallRuntime(Runtime::kAbort, 2); |
| 420 | // will not return here |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 421 | int3(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 422 | } |
| 423 | |
| 424 | |
| 425 | void MacroAssembler::CallStub(CodeStub* stub) { |
| 426 | ASSERT(allow_stub_calls()); // calls are not allowed in some stubs |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 427 | Call(stub->GetCode(), RelocInfo::CODE_TARGET); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 431 | MaybeObject* MacroAssembler::TryCallStub(CodeStub* stub) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 432 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 433 | MaybeObject* result = stub->TryGetCode(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 434 | if (!result->IsFailure()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 435 | call(Handle<Code>(Code::cast(result->ToObjectUnchecked())), |
| 436 | RelocInfo::CODE_TARGET); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 437 | } |
| 438 | return result; |
| 439 | } |
| 440 | |
| 441 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 442 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 443 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 444 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 445 | } |
| 446 | |
| 447 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 448 | MaybeObject* MacroAssembler::TryTailCallStub(CodeStub* stub) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 449 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 450 | MaybeObject* result = stub->TryGetCode(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 451 | if (!result->IsFailure()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 452 | jmp(Handle<Code>(Code::cast(result->ToObjectUnchecked())), |
| 453 | RelocInfo::CODE_TARGET); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 454 | } |
| 455 | return result; |
| 456 | } |
| 457 | |
| 458 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 459 | void MacroAssembler::StubReturn(int argc) { |
| 460 | ASSERT(argc >= 1 && generating_stub()); |
| 461 | ret((argc - 1) * kPointerSize); |
| 462 | } |
| 463 | |
| 464 | |
| 465 | void MacroAssembler::IllegalOperation(int num_arguments) { |
| 466 | if (num_arguments > 0) { |
| 467 | addq(rsp, Immediate(num_arguments * kPointerSize)); |
| 468 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 469 | LoadRoot(rax, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 470 | } |
| 471 | |
| 472 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 473 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
| 474 | // The assert checks that the constants for the maximum number of digits |
| 475 | // for an array index cached in the hash field and the number of bits |
| 476 | // reserved for it does not conflict. |
| 477 | ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < |
| 478 | (1 << String::kArrayIndexValueBits)); |
| 479 | // We want the smi-tagged index in key. Even if we subsequently go to |
| 480 | // the slow case, converting the key to a smi is always valid. |
| 481 | // key: string key |
| 482 | // hash: key's hash field, including its array index value. |
| 483 | and_(hash, Immediate(String::kArrayIndexValueMask)); |
| 484 | shr(hash, Immediate(String::kHashShift)); |
| 485 | // Here we actually clobber the key which will be used if calling into |
| 486 | // runtime later. However as the new key is the numeric value of a string key |
| 487 | // there is no difference in using either key. |
| 488 | Integer32ToSmi(index, hash); |
| 489 | } |
| 490 | |
| 491 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 492 | void MacroAssembler::CallRuntime(Runtime::FunctionId id, int num_arguments) { |
| 493 | CallRuntime(Runtime::FunctionForId(id), num_arguments); |
| 494 | } |
| 495 | |
| 496 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 497 | void MacroAssembler::CallRuntimeSaveDoubles(Runtime::FunctionId id) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 498 | const Runtime::Function* function = Runtime::FunctionForId(id); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 499 | Set(rax, function->nargs); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 500 | LoadAddress(rbx, ExternalReference(function, isolate())); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 501 | CEntryStub ces(1); |
| 502 | ces.SaveDoubles(); |
| 503 | CallStub(&ces); |
| 504 | } |
| 505 | |
| 506 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 507 | MaybeObject* MacroAssembler::TryCallRuntime(Runtime::FunctionId id, |
| 508 | int num_arguments) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 509 | return TryCallRuntime(Runtime::FunctionForId(id), num_arguments); |
| 510 | } |
| 511 | |
| 512 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 513 | void MacroAssembler::CallRuntime(const Runtime::Function* f, |
| 514 | int num_arguments) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 515 | // If the expected number of arguments of the runtime function is |
| 516 | // constant, we check that the actual number of arguments match the |
| 517 | // expectation. |
| 518 | if (f->nargs >= 0 && f->nargs != num_arguments) { |
| 519 | IllegalOperation(num_arguments); |
| 520 | return; |
| 521 | } |
| 522 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 523 | // TODO(1236192): Most runtime routines don't need the number of |
| 524 | // arguments passed in because it is constant. At some point we |
| 525 | // should remove this need and make the runtime routine entry code |
| 526 | // smarter. |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 527 | Set(rax, num_arguments); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 528 | LoadAddress(rbx, ExternalReference(f, isolate())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 529 | CEntryStub ces(f->result_size); |
| 530 | CallStub(&ces); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 534 | MaybeObject* MacroAssembler::TryCallRuntime(const Runtime::Function* f, |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 535 | int num_arguments) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 536 | if (f->nargs >= 0 && f->nargs != num_arguments) { |
| 537 | IllegalOperation(num_arguments); |
| 538 | // Since we did not call the stub, there was no allocation failure. |
| 539 | // Return some non-failure object. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 540 | return HEAP->undefined_value(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | // TODO(1236192): Most runtime routines don't need the number of |
| 544 | // arguments passed in because it is constant. At some point we |
| 545 | // should remove this need and make the runtime routine entry code |
| 546 | // smarter. |
| 547 | Set(rax, num_arguments); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 548 | LoadAddress(rbx, ExternalReference(f, isolate())); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 549 | CEntryStub ces(f->result_size); |
| 550 | return TryCallStub(&ces); |
| 551 | } |
| 552 | |
| 553 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 554 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
| 555 | int num_arguments) { |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 556 | Set(rax, num_arguments); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 557 | LoadAddress(rbx, ext); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 558 | |
| 559 | CEntryStub stub(1); |
| 560 | CallStub(&stub); |
| 561 | } |
| 562 | |
| 563 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 564 | void MacroAssembler::TailCallExternalReference(const ExternalReference& ext, |
| 565 | int num_arguments, |
| 566 | int result_size) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 567 | // ----------- S t a t e ------------- |
| 568 | // -- rsp[0] : return address |
| 569 | // -- rsp[8] : argument num_arguments - 1 |
| 570 | // ... |
| 571 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
| 572 | // ----------------------------------- |
| 573 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 574 | // TODO(1236192): Most runtime routines don't need the number of |
| 575 | // arguments passed in because it is constant. At some point we |
| 576 | // should remove this need and make the runtime routine entry code |
| 577 | // smarter. |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 578 | Set(rax, num_arguments); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 579 | JumpToExternalReference(ext, result_size); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 580 | } |
| 581 | |
| 582 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 583 | MaybeObject* MacroAssembler::TryTailCallExternalReference( |
| 584 | const ExternalReference& ext, int num_arguments, int result_size) { |
| 585 | // ----------- S t a t e ------------- |
| 586 | // -- rsp[0] : return address |
| 587 | // -- rsp[8] : argument num_arguments - 1 |
| 588 | // ... |
| 589 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
| 590 | // ----------------------------------- |
| 591 | |
| 592 | // TODO(1236192): Most runtime routines don't need the number of |
| 593 | // arguments passed in because it is constant. At some point we |
| 594 | // should remove this need and make the runtime routine entry code |
| 595 | // smarter. |
| 596 | Set(rax, num_arguments); |
| 597 | return TryJumpToExternalReference(ext, result_size); |
| 598 | } |
| 599 | |
| 600 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 601 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, |
| 602 | int num_arguments, |
| 603 | int result_size) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 604 | TailCallExternalReference(ExternalReference(fid, isolate()), |
| 605 | num_arguments, |
| 606 | result_size); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 607 | } |
| 608 | |
| 609 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 610 | MaybeObject* MacroAssembler::TryTailCallRuntime(Runtime::FunctionId fid, |
| 611 | int num_arguments, |
| 612 | int result_size) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 613 | return TryTailCallExternalReference(ExternalReference(fid, isolate()), |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 614 | num_arguments, |
| 615 | result_size); |
| 616 | } |
| 617 | |
| 618 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 619 | static int Offset(ExternalReference ref0, ExternalReference ref1) { |
| 620 | int64_t offset = (ref0.address() - ref1.address()); |
| 621 | // Check that fits into int. |
| 622 | ASSERT(static_cast<int>(offset) == offset); |
| 623 | return static_cast<int>(offset); |
| 624 | } |
| 625 | |
| 626 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 627 | void MacroAssembler::PrepareCallApiFunction(int arg_stack_space) { |
| 628 | #ifdef _WIN64 |
| 629 | // We need to prepare a slot for result handle on stack and put |
| 630 | // a pointer to it into 1st arg register. |
| 631 | EnterApiExitFrame(arg_stack_space + 1); |
| 632 | |
| 633 | // rcx must be used to pass the pointer to the return value slot. |
| 634 | lea(rcx, StackSpaceOperand(arg_stack_space)); |
| 635 | #else |
| 636 | EnterApiExitFrame(arg_stack_space); |
| 637 | #endif |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 638 | } |
| 639 | |
| 640 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 641 | MaybeObject* MacroAssembler::TryCallApiFunctionAndReturn( |
| 642 | ApiFunction* function, int stack_space) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 643 | Label empty_result; |
| 644 | Label prologue; |
| 645 | Label promote_scheduled_exception; |
| 646 | Label delete_allocated_handles; |
| 647 | Label leave_exit_frame; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 648 | Label write_back; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 649 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 650 | ExternalReference next_address = |
| 651 | ExternalReference::handle_scope_next_address(); |
| 652 | const int kNextOffset = 0; |
| 653 | const int kLimitOffset = Offset( |
| 654 | ExternalReference::handle_scope_limit_address(), |
| 655 | next_address); |
| 656 | const int kLevelOffset = Offset( |
| 657 | ExternalReference::handle_scope_level_address(), |
| 658 | next_address); |
| 659 | ExternalReference scheduled_exception_address = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 660 | ExternalReference::scheduled_exception_address(isolate()); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 661 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 662 | // Allocate HandleScope in callee-save registers. |
| 663 | Register prev_next_address_reg = r14; |
| 664 | Register prev_limit_reg = rbx; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 665 | Register base_reg = r15; |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 666 | movq(base_reg, next_address); |
| 667 | movq(prev_next_address_reg, Operand(base_reg, kNextOffset)); |
| 668 | movq(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 669 | addl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 670 | // Call the api function! |
| 671 | movq(rax, |
| 672 | reinterpret_cast<int64_t>(function->address()), |
| 673 | RelocInfo::RUNTIME_ENTRY); |
| 674 | call(rax); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 675 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 676 | #ifdef _WIN64 |
| 677 | // rax keeps a pointer to v8::Handle, unpack it. |
| 678 | movq(rax, Operand(rax, 0)); |
| 679 | #endif |
| 680 | // Check if the result handle holds 0. |
| 681 | testq(rax, rax); |
| 682 | j(zero, &empty_result); |
| 683 | // It was non-zero. Dereference to get the result value. |
| 684 | movq(rax, Operand(rax, 0)); |
| 685 | bind(&prologue); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 686 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 687 | // No more valid handles (the result handle was the last one). Restore |
| 688 | // previous handle scope. |
| 689 | subl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 690 | movq(Operand(base_reg, kNextOffset), prev_next_address_reg); |
| 691 | cmpq(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 692 | j(not_equal, &delete_allocated_handles); |
| 693 | bind(&leave_exit_frame); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 694 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 695 | // Check if the function scheduled an exception. |
| 696 | movq(rsi, scheduled_exception_address); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 697 | Cmp(Operand(rsi, 0), FACTORY->the_hole_value()); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 698 | j(not_equal, &promote_scheduled_exception); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 699 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 700 | LeaveApiExitFrame(); |
| 701 | ret(stack_space * kPointerSize); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 702 | |
| 703 | bind(&promote_scheduled_exception); |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 704 | MaybeObject* result = TryTailCallRuntime(Runtime::kPromoteScheduledException, |
| 705 | 0, 1); |
| 706 | if (result->IsFailure()) { |
| 707 | return result; |
| 708 | } |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 709 | |
| 710 | bind(&empty_result); |
| 711 | // It was zero; the result is undefined. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 712 | Move(rax, FACTORY->undefined_value()); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 713 | jmp(&prologue); |
| 714 | |
| 715 | // HandleScope limit has changed. Delete allocated extensions. |
| 716 | bind(&delete_allocated_handles); |
| 717 | movq(Operand(base_reg, kLimitOffset), prev_limit_reg); |
| 718 | movq(prev_limit_reg, rax); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 719 | #ifdef _WIN64 |
| 720 | LoadAddress(rcx, ExternalReference::isolate_address()); |
| 721 | #else |
| 722 | LoadAddress(rdi, ExternalReference::isolate_address()); |
| 723 | #endif |
| 724 | LoadAddress(rax, |
| 725 | ExternalReference::delete_handle_scope_extensions(isolate())); |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 726 | call(rax); |
| 727 | movq(rax, prev_limit_reg); |
| 728 | jmp(&leave_exit_frame); |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 729 | |
| 730 | return result; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 734 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext, |
| 735 | int result_size) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 736 | // 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] | 737 | LoadAddress(rbx, ext); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 738 | CEntryStub ces(result_size); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 739 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 740 | } |
| 741 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 742 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 743 | MaybeObject* MacroAssembler::TryJumpToExternalReference( |
| 744 | const ExternalReference& ext, int result_size) { |
| 745 | // 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] | 746 | LoadAddress(rbx, ext); |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 747 | CEntryStub ces(result_size); |
| 748 | return TryTailCallStub(&ces); |
| 749 | } |
| 750 | |
| 751 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 752 | void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, |
| 753 | InvokeFlag flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 754 | CallWrapper* call_wrapper) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 755 | // Calls are not allowed in some stubs. |
| 756 | ASSERT(flag == JUMP_FUNCTION || allow_stub_calls()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 757 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 758 | // Rely on the assertion to check that the number of provided |
| 759 | // arguments match the expected number of arguments. Fake a |
| 760 | // parameter count to avoid emitting code to do the check. |
| 761 | ParameterCount expected(0); |
| 762 | GetBuiltinEntry(rdx, id); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 763 | InvokeCode(rdx, expected, expected, flag, call_wrapper); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 764 | } |
| 765 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 766 | |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 767 | void MacroAssembler::GetBuiltinFunction(Register target, |
| 768 | Builtins::JavaScript id) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 769 | // Load the builtins object into target register. |
| 770 | movq(target, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 771 | movq(target, FieldOperand(target, GlobalObject::kBuiltinsOffset)); |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 772 | movq(target, FieldOperand(target, |
| 773 | JSBuiltinsObject::OffsetOfFunctionWithId(id))); |
| 774 | } |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 775 | |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 776 | |
| 777 | void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { |
| 778 | ASSERT(!target.is(rdi)); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 779 | // Load the JavaScript builtin function from the builtins object. |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 780 | GetBuiltinFunction(rdi, id); |
| 781 | movq(target, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 785 | void MacroAssembler::Set(Register dst, int64_t x) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 786 | if (x == 0) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 787 | xorl(dst, dst); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 788 | } else if (is_int32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 789 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 790 | } else if (is_uint32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 791 | movl(dst, Immediate(static_cast<uint32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 792 | } else { |
| 793 | movq(dst, x, RelocInfo::NONE); |
| 794 | } |
| 795 | } |
| 796 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 797 | void MacroAssembler::Set(const Operand& dst, int64_t x) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 798 | if (is_int32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 799 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 800 | } else { |
| 801 | movq(kScratchRegister, x, RelocInfo::NONE); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 802 | movq(dst, kScratchRegister); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 803 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 804 | } |
| 805 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 806 | // ---------------------------------------------------------------------------- |
| 807 | // Smi tagging, untagging and tag detection. |
| 808 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 809 | Register MacroAssembler::GetSmiConstant(Smi* source) { |
| 810 | int value = source->value(); |
| 811 | if (value == 0) { |
| 812 | xorl(kScratchRegister, kScratchRegister); |
| 813 | return kScratchRegister; |
| 814 | } |
| 815 | if (value == 1) { |
| 816 | return kSmiConstantRegister; |
| 817 | } |
| 818 | LoadSmiConstant(kScratchRegister, source); |
| 819 | return kScratchRegister; |
| 820 | } |
| 821 | |
| 822 | void MacroAssembler::LoadSmiConstant(Register dst, Smi* source) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 823 | if (emit_debug_code()) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 824 | movq(dst, |
| 825 | reinterpret_cast<uint64_t>(Smi::FromInt(kSmiConstantRegisterValue)), |
| 826 | RelocInfo::NONE); |
| 827 | cmpq(dst, kSmiConstantRegister); |
| 828 | if (allow_stub_calls()) { |
| 829 | Assert(equal, "Uninitialized kSmiConstantRegister"); |
| 830 | } else { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 831 | NearLabel ok; |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 832 | j(equal, &ok); |
| 833 | int3(); |
| 834 | bind(&ok); |
| 835 | } |
| 836 | } |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 837 | int value = source->value(); |
| 838 | if (value == 0) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 839 | xorl(dst, dst); |
| 840 | return; |
| 841 | } |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 842 | bool negative = value < 0; |
| 843 | unsigned int uvalue = negative ? -value : value; |
| 844 | |
| 845 | switch (uvalue) { |
| 846 | case 9: |
| 847 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_8, 0)); |
| 848 | break; |
| 849 | case 8: |
| 850 | xorl(dst, dst); |
| 851 | lea(dst, Operand(dst, kSmiConstantRegister, times_8, 0)); |
| 852 | break; |
| 853 | case 4: |
| 854 | xorl(dst, dst); |
| 855 | lea(dst, Operand(dst, kSmiConstantRegister, times_4, 0)); |
| 856 | break; |
| 857 | case 5: |
| 858 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_4, 0)); |
| 859 | break; |
| 860 | case 3: |
| 861 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_2, 0)); |
| 862 | break; |
| 863 | case 2: |
| 864 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_1, 0)); |
| 865 | break; |
| 866 | case 1: |
| 867 | movq(dst, kSmiConstantRegister); |
| 868 | break; |
| 869 | case 0: |
| 870 | UNREACHABLE(); |
| 871 | return; |
| 872 | default: |
| 873 | movq(dst, reinterpret_cast<uint64_t>(source), RelocInfo::NONE); |
| 874 | return; |
| 875 | } |
| 876 | if (negative) { |
| 877 | neg(dst); |
| 878 | } |
| 879 | } |
| 880 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 881 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 882 | void MacroAssembler::Integer32ToSmi(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 883 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 884 | if (!dst.is(src)) { |
| 885 | movl(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 886 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 887 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 888 | } |
| 889 | |
| 890 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 891 | void MacroAssembler::Integer32ToSmiField(const Operand& dst, Register src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 892 | if (emit_debug_code()) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 893 | testb(dst, Immediate(0x01)); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 894 | NearLabel ok; |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 895 | j(zero, &ok); |
| 896 | if (allow_stub_calls()) { |
| 897 | Abort("Integer32ToSmiField writing to non-smi location"); |
| 898 | } else { |
| 899 | int3(); |
| 900 | } |
| 901 | bind(&ok); |
| 902 | } |
| 903 | ASSERT(kSmiShift % kBitsPerByte == 0); |
| 904 | movl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 905 | } |
| 906 | |
| 907 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 908 | void MacroAssembler::Integer64PlusConstantToSmi(Register dst, |
| 909 | Register src, |
| 910 | int constant) { |
| 911 | if (dst.is(src)) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 912 | addl(dst, Immediate(constant)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 913 | } else { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 914 | leal(dst, Operand(src, constant)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 915 | } |
| 916 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | |
| 920 | void MacroAssembler::SmiToInteger32(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 921 | ASSERT_EQ(0, kSmiTag); |
| 922 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 923 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 924 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 925 | shr(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 926 | } |
| 927 | |
| 928 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 929 | void MacroAssembler::SmiToInteger32(Register dst, const Operand& src) { |
| 930 | movl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 931 | } |
| 932 | |
| 933 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 934 | void MacroAssembler::SmiToInteger64(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 935 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 936 | if (!dst.is(src)) { |
| 937 | movq(dst, src); |
| 938 | } |
| 939 | sar(dst, Immediate(kSmiShift)); |
| 940 | } |
| 941 | |
| 942 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 943 | void MacroAssembler::SmiToInteger64(Register dst, const Operand& src) { |
| 944 | movsxlq(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 945 | } |
| 946 | |
| 947 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 948 | void MacroAssembler::SmiTest(Register src) { |
| 949 | testq(src, src); |
| 950 | } |
| 951 | |
| 952 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 953 | void MacroAssembler::SmiCompare(Register smi1, Register smi2) { |
| 954 | if (emit_debug_code()) { |
| 955 | AbortIfNotSmi(smi1); |
| 956 | AbortIfNotSmi(smi2); |
| 957 | } |
| 958 | cmpq(smi1, smi2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | |
| 962 | void MacroAssembler::SmiCompare(Register dst, Smi* src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 963 | if (emit_debug_code()) { |
| 964 | AbortIfNotSmi(dst); |
| 965 | } |
| 966 | Cmp(dst, src); |
| 967 | } |
| 968 | |
| 969 | |
| 970 | void MacroAssembler::Cmp(Register dst, Smi* src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 971 | ASSERT(!dst.is(kScratchRegister)); |
| 972 | if (src->value() == 0) { |
| 973 | testq(dst, dst); |
| 974 | } else { |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 975 | Register constant_reg = GetSmiConstant(src); |
| 976 | cmpq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 977 | } |
| 978 | } |
| 979 | |
| 980 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 981 | void MacroAssembler::SmiCompare(Register dst, const Operand& src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 982 | if (emit_debug_code()) { |
| 983 | AbortIfNotSmi(dst); |
| 984 | AbortIfNotSmi(src); |
| 985 | } |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 986 | cmpq(dst, src); |
| 987 | } |
| 988 | |
| 989 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 990 | void MacroAssembler::SmiCompare(const Operand& dst, Register src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 991 | if (emit_debug_code()) { |
| 992 | AbortIfNotSmi(dst); |
| 993 | AbortIfNotSmi(src); |
| 994 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 995 | cmpq(dst, src); |
| 996 | } |
| 997 | |
| 998 | |
| 999 | void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1000 | if (emit_debug_code()) { |
| 1001 | AbortIfNotSmi(dst); |
| 1002 | } |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1003 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value())); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1004 | } |
| 1005 | |
| 1006 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1007 | void MacroAssembler::Cmp(const Operand& dst, Smi* src) { |
| 1008 | // The Operand cannot use the smi register. |
| 1009 | Register smi_reg = GetSmiConstant(src); |
| 1010 | ASSERT(!dst.AddressUsesRegister(smi_reg)); |
| 1011 | cmpq(dst, smi_reg); |
| 1012 | } |
| 1013 | |
| 1014 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1015 | void MacroAssembler::SmiCompareInteger32(const Operand& dst, Register src) { |
| 1016 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 1017 | } |
| 1018 | |
| 1019 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1020 | void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst, |
| 1021 | Register src, |
| 1022 | int power) { |
| 1023 | ASSERT(power >= 0); |
| 1024 | ASSERT(power < 64); |
| 1025 | if (power == 0) { |
| 1026 | SmiToInteger64(dst, src); |
| 1027 | return; |
| 1028 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1029 | if (!dst.is(src)) { |
| 1030 | movq(dst, src); |
| 1031 | } |
| 1032 | if (power < kSmiShift) { |
| 1033 | sar(dst, Immediate(kSmiShift - power)); |
| 1034 | } else if (power > kSmiShift) { |
| 1035 | shl(dst, Immediate(power - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1040 | void MacroAssembler::PositiveSmiDivPowerOfTwoToInteger32(Register dst, |
| 1041 | Register src, |
| 1042 | int power) { |
| 1043 | ASSERT((0 <= power) && (power < 32)); |
| 1044 | if (dst.is(src)) { |
| 1045 | shr(dst, Immediate(power + kSmiShift)); |
| 1046 | } else { |
| 1047 | UNIMPLEMENTED(); // Not used. |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1052 | Condition MacroAssembler::CheckSmi(Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1053 | ASSERT_EQ(0, kSmiTag); |
| 1054 | testb(src, Immediate(kSmiTagMask)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1055 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1059 | Condition MacroAssembler::CheckSmi(const Operand& src) { |
| 1060 | ASSERT_EQ(0, kSmiTag); |
| 1061 | testb(src, Immediate(kSmiTagMask)); |
| 1062 | return zero; |
| 1063 | } |
| 1064 | |
| 1065 | |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1066 | Condition MacroAssembler::CheckNonNegativeSmi(Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1067 | ASSERT_EQ(0, kSmiTag); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1068 | // 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] | 1069 | movq(kScratchRegister, src); |
| 1070 | rol(kScratchRegister, Immediate(1)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1071 | testb(kScratchRegister, Immediate(3)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1072 | return zero; |
| 1073 | } |
| 1074 | |
| 1075 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1076 | Condition MacroAssembler::CheckBothSmi(Register first, Register second) { |
| 1077 | if (first.is(second)) { |
| 1078 | return CheckSmi(first); |
| 1079 | } |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 1080 | ASSERT(kSmiTag == 0 && kHeapObjectTag == 1 && kHeapObjectTagMask == 3); |
| 1081 | leal(kScratchRegister, Operand(first, second, times_1, 0)); |
| 1082 | testb(kScratchRegister, Immediate(0x03)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1083 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1084 | } |
| 1085 | |
| 1086 | |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1087 | Condition MacroAssembler::CheckBothNonNegativeSmi(Register first, |
| 1088 | Register second) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1089 | if (first.is(second)) { |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1090 | return CheckNonNegativeSmi(first); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1091 | } |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1092 | movq(kScratchRegister, first); |
| 1093 | or_(kScratchRegister, second); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1094 | rol(kScratchRegister, Immediate(1)); |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 1095 | testl(kScratchRegister, Immediate(3)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1096 | return zero; |
| 1097 | } |
| 1098 | |
| 1099 | |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1100 | Condition MacroAssembler::CheckEitherSmi(Register first, |
| 1101 | Register second, |
| 1102 | Register scratch) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1103 | if (first.is(second)) { |
| 1104 | return CheckSmi(first); |
| 1105 | } |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1106 | if (scratch.is(second)) { |
| 1107 | andl(scratch, first); |
| 1108 | } else { |
| 1109 | if (!scratch.is(first)) { |
| 1110 | movl(scratch, first); |
| 1111 | } |
| 1112 | andl(scratch, second); |
| 1113 | } |
| 1114 | testb(scratch, Immediate(kSmiTagMask)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1115 | return zero; |
| 1116 | } |
| 1117 | |
| 1118 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1119 | Condition MacroAssembler::CheckIsMinSmi(Register src) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1120 | ASSERT(!src.is(kScratchRegister)); |
| 1121 | // If we overflow by subtracting one, it's the minimal smi value. |
| 1122 | cmpq(src, kSmiConstantRegister); |
| 1123 | return overflow; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1124 | } |
| 1125 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1126 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1127 | Condition MacroAssembler::CheckInteger32ValidSmiValue(Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1128 | // A 32-bit integer value can always be converted to a smi. |
| 1129 | return always; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1130 | } |
| 1131 | |
| 1132 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1133 | Condition MacroAssembler::CheckUInteger32ValidSmiValue(Register src) { |
| 1134 | // An unsigned 32-bit integer value is valid as long as the high bit |
| 1135 | // is not set. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1136 | testl(src, src); |
| 1137 | return positive; |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1138 | } |
| 1139 | |
| 1140 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1141 | void MacroAssembler::CheckSmiToIndicator(Register dst, Register src) { |
| 1142 | if (dst.is(src)) { |
| 1143 | andl(dst, Immediate(kSmiTagMask)); |
| 1144 | } else { |
| 1145 | movl(dst, Immediate(kSmiTagMask)); |
| 1146 | andl(dst, src); |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | |
| 1151 | void MacroAssembler::CheckSmiToIndicator(Register dst, const Operand& src) { |
| 1152 | if (!(src.AddressUsesRegister(dst))) { |
| 1153 | movl(dst, Immediate(kSmiTagMask)); |
| 1154 | andl(dst, src); |
| 1155 | } else { |
| 1156 | movl(dst, src); |
| 1157 | andl(dst, Immediate(kSmiTagMask)); |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1162 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) { |
| 1163 | if (constant->value() == 0) { |
| 1164 | if (!dst.is(src)) { |
| 1165 | movq(dst, src); |
| 1166 | } |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1167 | return; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1168 | } else if (dst.is(src)) { |
| 1169 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1170 | switch (constant->value()) { |
| 1171 | case 1: |
| 1172 | addq(dst, kSmiConstantRegister); |
| 1173 | return; |
| 1174 | case 2: |
| 1175 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 1176 | return; |
| 1177 | case 4: |
| 1178 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 1179 | return; |
| 1180 | case 8: |
| 1181 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 1182 | return; |
| 1183 | default: |
| 1184 | Register constant_reg = GetSmiConstant(constant); |
| 1185 | addq(dst, constant_reg); |
| 1186 | return; |
| 1187 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1188 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1189 | switch (constant->value()) { |
| 1190 | case 1: |
| 1191 | lea(dst, Operand(src, kSmiConstantRegister, times_1, 0)); |
| 1192 | return; |
| 1193 | case 2: |
| 1194 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 1195 | return; |
| 1196 | case 4: |
| 1197 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 1198 | return; |
| 1199 | case 8: |
| 1200 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 1201 | return; |
| 1202 | default: |
| 1203 | LoadSmiConstant(dst, constant); |
| 1204 | addq(dst, src); |
| 1205 | return; |
| 1206 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1211 | void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) { |
| 1212 | if (constant->value() != 0) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1213 | addl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(constant->value())); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1214 | } |
| 1215 | } |
| 1216 | |
| 1217 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1218 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant) { |
| 1219 | if (constant->value() == 0) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1220 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1221 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1222 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1223 | } else if (dst.is(src)) { |
| 1224 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1225 | Register constant_reg = GetSmiConstant(constant); |
| 1226 | subq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1227 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1228 | if (constant->value() == Smi::kMinValue) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1229 | LoadSmiConstant(dst, constant); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1230 | // Adding and subtracting the min-value gives the same result, it only |
| 1231 | // differs on the overflow bit, which we don't check here. |
| 1232 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1233 | } else { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1234 | // Subtract by adding the negation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1235 | LoadSmiConstant(dst, Smi::FromInt(-constant->value())); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1236 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1237 | } |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1242 | void MacroAssembler::SmiAdd(Register dst, |
| 1243 | Register src1, |
| 1244 | Register src2) { |
| 1245 | // No overflow checking. Use only when it's known that |
| 1246 | // overflowing is impossible. |
| 1247 | ASSERT(!dst.is(src2)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 1248 | if (!dst.is(src1)) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1249 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1250 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 1251 | addq(dst, src2); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1252 | Assert(no_overflow, "Smi addition overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1253 | } |
| 1254 | |
| 1255 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1256 | void MacroAssembler::SmiSub(Register dst, Register src1, Register src2) { |
| 1257 | // No overflow checking. Use only when it's known that |
| 1258 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1259 | ASSERT(!dst.is(src2)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 1260 | if (!dst.is(src1)) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1261 | movq(dst, src1); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1262 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 1263 | subq(dst, src2); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1264 | Assert(no_overflow, "Smi subtraction overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1265 | } |
| 1266 | |
| 1267 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1268 | void MacroAssembler::SmiSub(Register dst, |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1269 | Register src1, |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1270 | const Operand& src2) { |
| 1271 | // No overflow checking. Use only when it's known that |
| 1272 | // overflowing is impossible (e.g., subtracting two positive smis). |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 1273 | if (!dst.is(src1)) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1274 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1275 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 1276 | subq(dst, src2); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1277 | Assert(no_overflow, "Smi subtraction overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1278 | } |
| 1279 | |
| 1280 | |
| 1281 | void MacroAssembler::SmiNot(Register dst, Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1282 | ASSERT(!dst.is(kScratchRegister)); |
| 1283 | ASSERT(!src.is(kScratchRegister)); |
| 1284 | // Set tag and padding bits before negating, so that they are zero afterwards. |
| 1285 | movl(kScratchRegister, Immediate(~0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1286 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1287 | xor_(dst, kScratchRegister); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1288 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1289 | lea(dst, Operand(src, kScratchRegister, times_1, 0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1290 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1291 | not_(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1292 | } |
| 1293 | |
| 1294 | |
| 1295 | void MacroAssembler::SmiAnd(Register dst, Register src1, Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1296 | ASSERT(!dst.is(src2)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1297 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1298 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1299 | } |
| 1300 | and_(dst, src2); |
| 1301 | } |
| 1302 | |
| 1303 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1304 | void MacroAssembler::SmiAndConstant(Register dst, Register src, Smi* constant) { |
| 1305 | if (constant->value() == 0) { |
lrn@chromium.org | 5d00b60 | 2011-01-05 09:51:43 +0000 | [diff] [blame] | 1306 | Set(dst, 0); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1307 | } else if (dst.is(src)) { |
| 1308 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1309 | Register constant_reg = GetSmiConstant(constant); |
| 1310 | and_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1311 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1312 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1313 | and_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1314 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1315 | } |
| 1316 | |
| 1317 | |
| 1318 | void MacroAssembler::SmiOr(Register dst, Register src1, Register src2) { |
| 1319 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1320 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1321 | } |
| 1322 | or_(dst, src2); |
| 1323 | } |
| 1324 | |
| 1325 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1326 | void MacroAssembler::SmiOrConstant(Register dst, Register src, Smi* constant) { |
| 1327 | if (dst.is(src)) { |
| 1328 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1329 | Register constant_reg = GetSmiConstant(constant); |
| 1330 | or_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1331 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1332 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1333 | or_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1334 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1335 | } |
| 1336 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1337 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1338 | void MacroAssembler::SmiXor(Register dst, Register src1, Register src2) { |
| 1339 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1340 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1341 | } |
| 1342 | xor_(dst, src2); |
| 1343 | } |
| 1344 | |
| 1345 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1346 | void MacroAssembler::SmiXorConstant(Register dst, Register src, Smi* constant) { |
| 1347 | if (dst.is(src)) { |
| 1348 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1349 | Register constant_reg = GetSmiConstant(constant); |
| 1350 | xor_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1351 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1352 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1353 | xor_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1354 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1355 | } |
| 1356 | |
| 1357 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1358 | void MacroAssembler::SmiShiftArithmeticRightConstant(Register dst, |
| 1359 | Register src, |
| 1360 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1361 | ASSERT(is_uint5(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1362 | if (shift_value > 0) { |
| 1363 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1364 | sar(dst, Immediate(shift_value + kSmiShift)); |
| 1365 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1366 | } else { |
| 1367 | UNIMPLEMENTED(); // Not used. |
| 1368 | } |
| 1369 | } |
| 1370 | } |
| 1371 | |
| 1372 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1373 | void MacroAssembler::SmiShiftLeftConstant(Register dst, |
| 1374 | Register src, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1375 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1376 | if (!dst.is(src)) { |
| 1377 | movq(dst, src); |
| 1378 | } |
| 1379 | if (shift_value > 0) { |
| 1380 | shl(dst, Immediate(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1381 | } |
| 1382 | } |
| 1383 | |
| 1384 | |
| 1385 | void MacroAssembler::SmiShiftLeft(Register dst, |
| 1386 | Register src1, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1387 | Register src2) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1388 | ASSERT(!dst.is(rcx)); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1389 | NearLabel result_ok; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1390 | // Untag shift amount. |
| 1391 | if (!dst.is(src1)) { |
| 1392 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1393 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1394 | SmiToInteger32(rcx, src2); |
| 1395 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 1396 | and_(rcx, Immediate(0x1f)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1397 | shl_cl(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1398 | } |
| 1399 | |
| 1400 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1401 | void MacroAssembler::SmiShiftArithmeticRight(Register dst, |
| 1402 | Register src1, |
| 1403 | Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1404 | ASSERT(!dst.is(kScratchRegister)); |
| 1405 | ASSERT(!src1.is(kScratchRegister)); |
| 1406 | ASSERT(!src2.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1407 | ASSERT(!dst.is(rcx)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1408 | if (src1.is(rcx)) { |
| 1409 | movq(kScratchRegister, src1); |
| 1410 | } else if (src2.is(rcx)) { |
| 1411 | movq(kScratchRegister, src2); |
| 1412 | } |
| 1413 | if (!dst.is(src1)) { |
| 1414 | movq(dst, src1); |
| 1415 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1416 | SmiToInteger32(rcx, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1417 | orl(rcx, Immediate(kSmiShift)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1418 | sar_cl(dst); // Shift 32 + original rcx & 0x1f. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1419 | shl(dst, Immediate(kSmiShift)); |
| 1420 | if (src1.is(rcx)) { |
| 1421 | movq(src1, kScratchRegister); |
| 1422 | } else if (src2.is(rcx)) { |
| 1423 | movq(src2, kScratchRegister); |
| 1424 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1425 | } |
| 1426 | |
| 1427 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1428 | SmiIndex MacroAssembler::SmiToIndex(Register dst, |
| 1429 | Register src, |
| 1430 | int shift) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1431 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1432 | // There is a possible optimization if shift is in the range 60-63, but that |
| 1433 | // will (and must) never happen. |
| 1434 | if (!dst.is(src)) { |
| 1435 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1436 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1437 | if (shift < kSmiShift) { |
| 1438 | sar(dst, Immediate(kSmiShift - shift)); |
| 1439 | } else { |
| 1440 | shl(dst, Immediate(shift - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1441 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1442 | return SmiIndex(dst, times_1); |
| 1443 | } |
| 1444 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1445 | SmiIndex MacroAssembler::SmiToNegativeIndex(Register dst, |
| 1446 | Register src, |
| 1447 | int shift) { |
| 1448 | // Register src holds a positive smi. |
| 1449 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1450 | if (!dst.is(src)) { |
| 1451 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1452 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1453 | neg(dst); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1454 | if (shift < kSmiShift) { |
| 1455 | sar(dst, Immediate(kSmiShift - shift)); |
| 1456 | } else { |
| 1457 | shl(dst, Immediate(shift - kSmiShift)); |
| 1458 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1459 | return SmiIndex(dst, times_1); |
| 1460 | } |
| 1461 | |
| 1462 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 1463 | void MacroAssembler::AddSmiField(Register dst, const Operand& src) { |
| 1464 | ASSERT_EQ(0, kSmiShift % kBitsPerByte); |
| 1465 | addl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 1466 | } |
| 1467 | |
| 1468 | |
| 1469 | |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 1470 | void MacroAssembler::Move(Register dst, Register src) { |
| 1471 | if (!dst.is(src)) { |
| 1472 | movq(dst, src); |
| 1473 | } |
| 1474 | } |
| 1475 | |
| 1476 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1477 | void MacroAssembler::Move(Register dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1478 | ASSERT(!source->IsFailure()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1479 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1480 | Move(dst, Smi::cast(*source)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1481 | } else { |
| 1482 | movq(dst, source, RelocInfo::EMBEDDED_OBJECT); |
| 1483 | } |
| 1484 | } |
| 1485 | |
| 1486 | |
| 1487 | void MacroAssembler::Move(const Operand& dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1488 | ASSERT(!source->IsFailure()); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1489 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1490 | Move(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1491 | } else { |
| 1492 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1493 | movq(dst, kScratchRegister); |
| 1494 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1495 | } |
| 1496 | |
| 1497 | |
| 1498 | void MacroAssembler::Cmp(Register dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1499 | if (source->IsSmi()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1500 | Cmp(dst, Smi::cast(*source)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1501 | } else { |
| 1502 | Move(kScratchRegister, source); |
| 1503 | cmpq(dst, kScratchRegister); |
| 1504 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1505 | } |
| 1506 | |
| 1507 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1508 | void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1509 | if (source->IsSmi()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1510 | Cmp(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1511 | } else { |
| 1512 | ASSERT(source->IsHeapObject()); |
| 1513 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1514 | cmpq(dst, kScratchRegister); |
| 1515 | } |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1516 | } |
| 1517 | |
| 1518 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1519 | void MacroAssembler::Push(Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1520 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1521 | Push(Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1522 | } else { |
| 1523 | ASSERT(source->IsHeapObject()); |
| 1524 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1525 | push(kScratchRegister); |
| 1526 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1527 | } |
| 1528 | |
| 1529 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1530 | void MacroAssembler::Push(Smi* source) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1531 | intptr_t smi = reinterpret_cast<intptr_t>(source); |
| 1532 | if (is_int32(smi)) { |
| 1533 | push(Immediate(static_cast<int32_t>(smi))); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1534 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1535 | Register constant = GetSmiConstant(source); |
| 1536 | push(constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1537 | } |
| 1538 | } |
| 1539 | |
| 1540 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 1541 | void MacroAssembler::Drop(int stack_elements) { |
| 1542 | if (stack_elements > 0) { |
| 1543 | addq(rsp, Immediate(stack_elements * kPointerSize)); |
| 1544 | } |
| 1545 | } |
| 1546 | |
| 1547 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1548 | void MacroAssembler::Test(const Operand& src, Smi* source) { |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 1549 | testl(Operand(src, kIntSize), Immediate(source->value())); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1550 | } |
| 1551 | |
| 1552 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1553 | void MacroAssembler::Jump(ExternalReference ext) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1554 | LoadAddress(kScratchRegister, ext); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1555 | jmp(kScratchRegister); |
| 1556 | } |
| 1557 | |
| 1558 | |
| 1559 | void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) { |
| 1560 | movq(kScratchRegister, destination, rmode); |
| 1561 | jmp(kScratchRegister); |
| 1562 | } |
| 1563 | |
| 1564 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1565 | void MacroAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode) { |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1566 | // TODO(X64): Inline this |
| 1567 | jmp(code_object, rmode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1568 | } |
| 1569 | |
| 1570 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1571 | int MacroAssembler::CallSize(ExternalReference ext) { |
| 1572 | // Opcode for call kScratchRegister is: Rex.B FF D4 (three bytes). |
| 1573 | const int kCallInstructionSize = 3; |
| 1574 | return LoadAddressSize(ext) + kCallInstructionSize; |
| 1575 | } |
| 1576 | |
| 1577 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1578 | void MacroAssembler::Call(ExternalReference ext) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1579 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1580 | int end_position = pc_offset() + CallSize(ext); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1581 | #endif |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1582 | LoadAddress(kScratchRegister, ext); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1583 | call(kScratchRegister); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1584 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1585 | CHECK_EQ(end_position, pc_offset()); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1586 | #endif |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1587 | } |
| 1588 | |
| 1589 | |
| 1590 | void MacroAssembler::Call(Address destination, RelocInfo::Mode rmode) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1591 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1592 | int end_position = pc_offset() + CallSize(destination, rmode); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1593 | #endif |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1594 | movq(kScratchRegister, destination, rmode); |
| 1595 | call(kScratchRegister); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1596 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1597 | CHECK_EQ(pc_offset(), end_position); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1598 | #endif |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1599 | } |
| 1600 | |
| 1601 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1602 | void MacroAssembler::Call(Handle<Code> code_object, RelocInfo::Mode rmode) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1603 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1604 | int end_position = pc_offset() + CallSize(code_object); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1605 | #endif |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1606 | ASSERT(RelocInfo::IsCodeTarget(rmode)); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1607 | call(code_object, rmode); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1608 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1609 | CHECK_EQ(end_position, pc_offset()); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 1610 | #endif |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1611 | } |
| 1612 | |
| 1613 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1614 | void MacroAssembler::Pushad() { |
| 1615 | push(rax); |
| 1616 | push(rcx); |
| 1617 | push(rdx); |
| 1618 | push(rbx); |
| 1619 | // Not pushing rsp or rbp. |
| 1620 | push(rsi); |
| 1621 | push(rdi); |
| 1622 | push(r8); |
| 1623 | push(r9); |
| 1624 | // r10 is kScratchRegister. |
| 1625 | push(r11); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 1626 | // r12 is kSmiConstantRegister. |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1627 | // r13 is kRootRegister. |
| 1628 | push(r14); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 1629 | push(r15); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1630 | STATIC_ASSERT(11 == kNumSafepointSavedRegisters); |
| 1631 | // Use lea for symmetry with Popad. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 1632 | int sp_delta = |
| 1633 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
| 1634 | lea(rsp, Operand(rsp, -sp_delta)); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1635 | } |
| 1636 | |
| 1637 | |
| 1638 | void MacroAssembler::Popad() { |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1639 | // 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] | 1640 | int sp_delta = |
| 1641 | (kNumSafepointRegisters - kNumSafepointSavedRegisters) * kPointerSize; |
| 1642 | lea(rsp, Operand(rsp, sp_delta)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 1643 | pop(r15); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1644 | pop(r14); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 1645 | pop(r11); |
| 1646 | pop(r9); |
| 1647 | pop(r8); |
| 1648 | pop(rdi); |
| 1649 | pop(rsi); |
| 1650 | pop(rbx); |
| 1651 | pop(rdx); |
| 1652 | pop(rcx); |
| 1653 | pop(rax); |
| 1654 | } |
| 1655 | |
| 1656 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1657 | void MacroAssembler::Dropad() { |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1658 | addq(rsp, Immediate(kNumSafepointRegisters * kPointerSize)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1659 | } |
| 1660 | |
| 1661 | |
| 1662 | // Order general registers are pushed by Pushad: |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 1663 | // rax, rcx, rdx, rbx, rsi, rdi, r8, r9, r11, r14, r15. |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1664 | int MacroAssembler::kSafepointPushRegisterIndices[Register::kNumRegisters] = { |
| 1665 | 0, |
| 1666 | 1, |
| 1667 | 2, |
| 1668 | 3, |
| 1669 | -1, |
| 1670 | -1, |
| 1671 | 4, |
| 1672 | 5, |
| 1673 | 6, |
| 1674 | 7, |
| 1675 | -1, |
| 1676 | 8, |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1677 | -1, |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 1678 | -1, |
| 1679 | 9, |
| 1680 | 10 |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 1681 | }; |
| 1682 | |
| 1683 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 1684 | void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) { |
| 1685 | movq(SafepointRegisterSlot(dst), src); |
| 1686 | } |
| 1687 | |
| 1688 | |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 1689 | void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) { |
| 1690 | movq(dst, SafepointRegisterSlot(src)); |
| 1691 | } |
| 1692 | |
| 1693 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 1694 | Operand MacroAssembler::SafepointRegisterSlot(Register reg) { |
| 1695 | return Operand(rsp, SafepointRegisterStackIndex(reg.code()) * kPointerSize); |
| 1696 | } |
| 1697 | |
| 1698 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1699 | void MacroAssembler::PushTryHandler(CodeLocation try_location, |
| 1700 | HandlerType type) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1701 | // Adjust this code if not the case. |
| 1702 | ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); |
| 1703 | |
| 1704 | // The pc (return address) is already on TOS. This code pushes state, |
| 1705 | // frame pointer and current handler. Check that they are expected |
| 1706 | // next on the stack, in that order. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1707 | ASSERT_EQ(StackHandlerConstants::kStateOffset, |
| 1708 | StackHandlerConstants::kPCOffset - kPointerSize); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1709 | ASSERT_EQ(StackHandlerConstants::kFPOffset, |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1710 | StackHandlerConstants::kStateOffset - kPointerSize); |
| 1711 | ASSERT_EQ(StackHandlerConstants::kNextOffset, |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1712 | StackHandlerConstants::kFPOffset - kPointerSize); |
| 1713 | |
| 1714 | if (try_location == IN_JAVASCRIPT) { |
| 1715 | if (type == TRY_CATCH_HANDLER) { |
| 1716 | push(Immediate(StackHandler::TRY_CATCH)); |
| 1717 | } else { |
| 1718 | push(Immediate(StackHandler::TRY_FINALLY)); |
| 1719 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1720 | push(rbp); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1721 | } else { |
| 1722 | ASSERT(try_location == IN_JS_ENTRY); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1723 | // The frame pointer does not point to a JS frame so we save NULL |
| 1724 | // for rbp. We expect the code throwing an exception to check rbp |
| 1725 | // before dereferencing it to restore the context. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1726 | push(Immediate(StackHandler::ENTRY)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1727 | push(Immediate(0)); // NULL frame pointer. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1728 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1729 | // Save the current handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1730 | Operand handler_operand = |
| 1731 | ExternalOperand(ExternalReference(Isolate::k_handler_address, isolate())); |
| 1732 | push(handler_operand); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1733 | // Link this handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1734 | movq(handler_operand, rsp); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1735 | } |
| 1736 | |
| 1737 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 1738 | void MacroAssembler::PopTryHandler() { |
| 1739 | ASSERT_EQ(0, StackHandlerConstants::kNextOffset); |
| 1740 | // Unlink this handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1741 | Operand handler_operand = |
| 1742 | ExternalOperand(ExternalReference(Isolate::k_handler_address, isolate())); |
| 1743 | pop(handler_operand); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 1744 | // Remove the remaining fields. |
| 1745 | addq(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
| 1746 | } |
| 1747 | |
| 1748 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1749 | void MacroAssembler::Throw(Register value) { |
| 1750 | // Check that stack should contain next handler, frame pointer, state and |
| 1751 | // return address in that order. |
| 1752 | STATIC_ASSERT(StackHandlerConstants::kFPOffset + kPointerSize == |
| 1753 | StackHandlerConstants::kStateOffset); |
| 1754 | STATIC_ASSERT(StackHandlerConstants::kStateOffset + kPointerSize == |
| 1755 | StackHandlerConstants::kPCOffset); |
| 1756 | // Keep thrown value in rax. |
| 1757 | if (!value.is(rax)) { |
| 1758 | movq(rax, value); |
| 1759 | } |
| 1760 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1761 | ExternalReference handler_address(Isolate::k_handler_address, isolate()); |
| 1762 | Operand handler_operand = ExternalOperand(handler_address); |
| 1763 | movq(rsp, handler_operand); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1764 | // get next in chain |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1765 | pop(handler_operand); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1766 | pop(rbp); // pop frame pointer |
| 1767 | pop(rdx); // remove state |
| 1768 | |
| 1769 | // Before returning we restore the context from the frame pointer if not NULL. |
| 1770 | // The frame pointer is NULL in the exception handler of a JS entry frame. |
| 1771 | Set(rsi, 0); // Tentatively set context pointer to NULL |
| 1772 | NearLabel skip; |
| 1773 | cmpq(rbp, Immediate(0)); |
| 1774 | j(equal, &skip); |
| 1775 | movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 1776 | bind(&skip); |
| 1777 | ret(0); |
| 1778 | } |
| 1779 | |
| 1780 | |
| 1781 | void MacroAssembler::ThrowUncatchable(UncatchableExceptionType type, |
| 1782 | Register value) { |
| 1783 | // Keep thrown value in rax. |
| 1784 | if (!value.is(rax)) { |
| 1785 | movq(rax, value); |
| 1786 | } |
| 1787 | // Fetch top stack handler. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1788 | ExternalReference handler_address(Isolate::k_handler_address, isolate()); |
| 1789 | Load(rsp, handler_address); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1790 | |
| 1791 | // Unwind the handlers until the ENTRY handler is found. |
| 1792 | NearLabel loop, done; |
| 1793 | bind(&loop); |
| 1794 | // Load the type of the current stack handler. |
| 1795 | const int kStateOffset = StackHandlerConstants::kStateOffset; |
| 1796 | cmpq(Operand(rsp, kStateOffset), Immediate(StackHandler::ENTRY)); |
| 1797 | j(equal, &done); |
| 1798 | // Fetch the next handler in the list. |
| 1799 | const int kNextOffset = StackHandlerConstants::kNextOffset; |
| 1800 | movq(rsp, Operand(rsp, kNextOffset)); |
| 1801 | jmp(&loop); |
| 1802 | bind(&done); |
| 1803 | |
| 1804 | // 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] | 1805 | Operand handler_operand = ExternalOperand(handler_address); |
| 1806 | pop(handler_operand); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1807 | |
| 1808 | if (type == OUT_OF_MEMORY) { |
| 1809 | // Set external caught exception to false. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1810 | ExternalReference external_caught( |
| 1811 | Isolate::k_external_caught_exception_address, isolate()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1812 | movq(rax, Immediate(false)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1813 | Store(external_caught, rax); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1814 | |
| 1815 | // Set pending exception and rax to out of memory exception. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1816 | ExternalReference pending_exception(Isolate::k_pending_exception_address, |
| 1817 | isolate()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1818 | movq(rax, Failure::OutOfMemoryException(), RelocInfo::NONE); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1819 | Store(pending_exception, rax); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1820 | } |
| 1821 | |
| 1822 | // Clear the context pointer. |
| 1823 | Set(rsi, 0); |
| 1824 | |
| 1825 | // Restore registers from handler. |
| 1826 | STATIC_ASSERT(StackHandlerConstants::kNextOffset + kPointerSize == |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1827 | StackHandlerConstants::kFPOffset); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1828 | pop(rbp); // FP |
| 1829 | STATIC_ASSERT(StackHandlerConstants::kFPOffset + kPointerSize == |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1830 | StackHandlerConstants::kStateOffset); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1831 | pop(rdx); // State |
| 1832 | |
| 1833 | STATIC_ASSERT(StackHandlerConstants::kStateOffset + kPointerSize == |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1834 | StackHandlerConstants::kPCOffset); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1835 | ret(0); |
| 1836 | } |
| 1837 | |
| 1838 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1839 | void MacroAssembler::Ret() { |
| 1840 | ret(0); |
| 1841 | } |
| 1842 | |
| 1843 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1844 | void MacroAssembler::Ret(int bytes_dropped, Register scratch) { |
| 1845 | if (is_uint16(bytes_dropped)) { |
| 1846 | ret(bytes_dropped); |
| 1847 | } else { |
| 1848 | pop(scratch); |
| 1849 | addq(rsp, Immediate(bytes_dropped)); |
| 1850 | push(scratch); |
| 1851 | ret(0); |
| 1852 | } |
| 1853 | } |
| 1854 | |
| 1855 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1856 | void MacroAssembler::FCmp() { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1857 | fucomip(); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1858 | fstp(0); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1859 | } |
| 1860 | |
| 1861 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1862 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 1863 | InstanceType type, |
| 1864 | Register map) { |
| 1865 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 1866 | CmpInstanceType(map, type); |
| 1867 | } |
| 1868 | |
| 1869 | |
| 1870 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 1871 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 1872 | Immediate(static_cast<int8_t>(type))); |
| 1873 | } |
| 1874 | |
| 1875 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1876 | void MacroAssembler::CheckMap(Register obj, |
| 1877 | Handle<Map> map, |
| 1878 | Label* fail, |
| 1879 | bool is_heap_object) { |
| 1880 | if (!is_heap_object) { |
| 1881 | JumpIfSmi(obj, fail); |
| 1882 | } |
| 1883 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
| 1884 | j(not_equal, fail); |
| 1885 | } |
| 1886 | |
| 1887 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1888 | void MacroAssembler::AbortIfNotNumber(Register object) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1889 | NearLabel ok; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1890 | Condition is_smi = CheckSmi(object); |
| 1891 | j(is_smi, &ok); |
| 1892 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1893 | FACTORY->heap_number_map()); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1894 | Assert(equal, "Operand not a number"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1895 | bind(&ok); |
| 1896 | } |
| 1897 | |
| 1898 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 1899 | void MacroAssembler::AbortIfSmi(Register object) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1900 | NearLabel ok; |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 1901 | Condition is_smi = CheckSmi(object); |
| 1902 | Assert(NegateCondition(is_smi), "Operand is a smi"); |
| 1903 | } |
| 1904 | |
| 1905 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1906 | void MacroAssembler::AbortIfNotSmi(Register object) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1907 | Condition is_smi = CheckSmi(object); |
| 1908 | Assert(is_smi, "Operand is not a smi"); |
| 1909 | } |
| 1910 | |
| 1911 | |
| 1912 | void MacroAssembler::AbortIfNotSmi(const Operand& object) { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 1913 | Condition is_smi = CheckSmi(object); |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 1914 | Assert(is_smi, "Operand is not a smi"); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 1915 | } |
| 1916 | |
| 1917 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 1918 | void MacroAssembler::AbortIfNotString(Register object) { |
| 1919 | testb(object, Immediate(kSmiTagMask)); |
| 1920 | Assert(not_equal, "Operand is not a string"); |
| 1921 | push(object); |
| 1922 | movq(object, FieldOperand(object, HeapObject::kMapOffset)); |
| 1923 | CmpInstanceType(object, FIRST_NONSTRING_TYPE); |
| 1924 | pop(object); |
| 1925 | Assert(below, "Operand is not a string"); |
| 1926 | } |
| 1927 | |
| 1928 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1929 | void MacroAssembler::AbortIfNotRootValue(Register src, |
| 1930 | Heap::RootListIndex root_value_index, |
| 1931 | const char* message) { |
| 1932 | ASSERT(!src.is(kScratchRegister)); |
| 1933 | LoadRoot(kScratchRegister, root_value_index); |
| 1934 | cmpq(src, kScratchRegister); |
| 1935 | Check(equal, message); |
| 1936 | } |
| 1937 | |
| 1938 | |
| 1939 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1940 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 1941 | Register map, |
| 1942 | Register instance_type) { |
| 1943 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 1944 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 1945 | ASSERT(kNotStringTag != 0); |
| 1946 | testb(instance_type, Immediate(kIsNotStringMask)); |
| 1947 | return zero; |
| 1948 | } |
| 1949 | |
| 1950 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1951 | void MacroAssembler::TryGetFunctionPrototype(Register function, |
| 1952 | Register result, |
| 1953 | Label* miss) { |
| 1954 | // Check that the receiver isn't a smi. |
| 1955 | testl(function, Immediate(kSmiTagMask)); |
| 1956 | j(zero, miss); |
| 1957 | |
| 1958 | // Check that the function really is a function. |
| 1959 | CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 1960 | j(not_equal, miss); |
| 1961 | |
| 1962 | // Make sure that the function has an instance prototype. |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1963 | NearLabel non_instance; |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1964 | testb(FieldOperand(result, Map::kBitFieldOffset), |
| 1965 | Immediate(1 << Map::kHasNonInstancePrototype)); |
| 1966 | j(not_zero, &non_instance); |
| 1967 | |
| 1968 | // Get the prototype or initial map from the function. |
| 1969 | movq(result, |
| 1970 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1971 | |
| 1972 | // If the prototype or initial map is the hole, don't return it and |
| 1973 | // simply miss the cache instead. This will allow us to allocate a |
| 1974 | // prototype object on-demand in the runtime system. |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1975 | CompareRoot(result, Heap::kTheHoleValueRootIndex); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1976 | j(equal, miss); |
| 1977 | |
| 1978 | // If the function does not have an initial map, we're done. |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1979 | NearLabel done; |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1980 | CmpObjectType(result, MAP_TYPE, kScratchRegister); |
| 1981 | j(not_equal, &done); |
| 1982 | |
| 1983 | // Get the prototype from the initial map. |
| 1984 | movq(result, FieldOperand(result, Map::kPrototypeOffset)); |
| 1985 | jmp(&done); |
| 1986 | |
| 1987 | // Non-instance prototype: Fetch prototype from constructor field |
| 1988 | // in initial map. |
| 1989 | bind(&non_instance); |
| 1990 | movq(result, FieldOperand(result, Map::kConstructorOffset)); |
| 1991 | |
| 1992 | // All done. |
| 1993 | bind(&done); |
| 1994 | } |
| 1995 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1996 | |
| 1997 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 1998 | if (FLAG_native_code_counters && counter->Enabled()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1999 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
| 2000 | movq(counter_operand, Immediate(value)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2001 | } |
| 2002 | } |
| 2003 | |
| 2004 | |
| 2005 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
| 2006 | ASSERT(value > 0); |
| 2007 | if (FLAG_native_code_counters && counter->Enabled()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2008 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2009 | if (value == 1) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2010 | incl(counter_operand); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2011 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2012 | addl(counter_operand, Immediate(value)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2013 | } |
| 2014 | } |
| 2015 | } |
| 2016 | |
| 2017 | |
| 2018 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
| 2019 | ASSERT(value > 0); |
| 2020 | if (FLAG_native_code_counters && counter->Enabled()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2021 | Operand counter_operand = ExternalOperand(ExternalReference(counter)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2022 | if (value == 1) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2023 | decl(counter_operand); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2024 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2025 | subl(counter_operand, Immediate(value)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2026 | } |
| 2027 | } |
| 2028 | } |
| 2029 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 2030 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2031 | #ifdef ENABLE_DEBUGGER_SUPPORT |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2032 | void MacroAssembler::DebugBreak() { |
| 2033 | ASSERT(allow_stub_calls()); |
lrn@chromium.org | 5d00b60 | 2011-01-05 09:51:43 +0000 | [diff] [blame] | 2034 | Set(rax, 0); // No arguments. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2035 | LoadAddress(rbx, ExternalReference(Runtime::kDebugBreak, isolate())); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2036 | CEntryStub ces(1); |
| 2037 | Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2038 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2039 | #endif // ENABLE_DEBUGGER_SUPPORT |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2040 | |
| 2041 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2042 | void MacroAssembler::InvokeCode(Register code, |
| 2043 | const ParameterCount& expected, |
| 2044 | const ParameterCount& actual, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2045 | InvokeFlag flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2046 | CallWrapper* call_wrapper) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 2047 | NearLabel done; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2048 | InvokePrologue(expected, |
| 2049 | actual, |
| 2050 | Handle<Code>::null(), |
| 2051 | code, |
| 2052 | &done, |
| 2053 | flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2054 | call_wrapper); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2055 | if (flag == CALL_FUNCTION) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2056 | if (call_wrapper != NULL) call_wrapper->BeforeCall(CallSize(code)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2057 | call(code); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2058 | if (call_wrapper != NULL) call_wrapper->AfterCall(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2059 | } else { |
| 2060 | ASSERT(flag == JUMP_FUNCTION); |
| 2061 | jmp(code); |
| 2062 | } |
| 2063 | bind(&done); |
| 2064 | } |
| 2065 | |
| 2066 | |
| 2067 | void MacroAssembler::InvokeCode(Handle<Code> code, |
| 2068 | const ParameterCount& expected, |
| 2069 | const ParameterCount& actual, |
| 2070 | RelocInfo::Mode rmode, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2071 | InvokeFlag flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2072 | CallWrapper* call_wrapper) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 2073 | NearLabel done; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2074 | Register dummy = rax; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2075 | InvokePrologue(expected, |
| 2076 | actual, |
| 2077 | code, |
| 2078 | dummy, |
| 2079 | &done, |
| 2080 | flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2081 | call_wrapper); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2082 | if (flag == CALL_FUNCTION) { |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2083 | if (call_wrapper != NULL) call_wrapper->BeforeCall(CallSize(code)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2084 | Call(code, rmode); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2085 | if (call_wrapper != NULL) call_wrapper->AfterCall(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2086 | } else { |
| 2087 | ASSERT(flag == JUMP_FUNCTION); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2088 | Jump(code, rmode); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2089 | } |
| 2090 | bind(&done); |
| 2091 | } |
| 2092 | |
| 2093 | |
| 2094 | void MacroAssembler::InvokeFunction(Register function, |
| 2095 | const ParameterCount& actual, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2096 | InvokeFlag flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2097 | CallWrapper* call_wrapper) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2098 | ASSERT(function.is(rdi)); |
| 2099 | movq(rdx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 2100 | movq(rsi, FieldOperand(function, JSFunction::kContextOffset)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2101 | movsxlq(rbx, |
| 2102 | FieldOperand(rdx, SharedFunctionInfo::kFormalParameterCountOffset)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2103 | // 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] | 2104 | // the executable code. |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 2105 | movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2106 | |
| 2107 | ParameterCount expected(rbx); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2108 | InvokeCode(rdx, expected, actual, flag, call_wrapper); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2109 | } |
| 2110 | |
| 2111 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2112 | void MacroAssembler::InvokeFunction(JSFunction* function, |
| 2113 | const ParameterCount& actual, |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2114 | InvokeFlag flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2115 | CallWrapper* call_wrapper) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2116 | ASSERT(function->is_compiled()); |
| 2117 | // Get the function and setup the context. |
| 2118 | Move(rdi, Handle<JSFunction>(function)); |
| 2119 | movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 2120 | |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2121 | if (V8::UseCrankshaft()) { |
| 2122 | // Since Crankshaft can recompile a function, we need to load |
| 2123 | // the Code object every time we call the function. |
| 2124 | movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
| 2125 | ParameterCount expected(function->shared()->formal_parameter_count()); |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2126 | InvokeCode(rdx, expected, actual, flag, call_wrapper); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2127 | } else { |
| 2128 | // Invoke the cached code. |
| 2129 | Handle<Code> code(function->code()); |
| 2130 | ParameterCount expected(function->shared()->formal_parameter_count()); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2131 | InvokeCode(code, |
| 2132 | expected, |
| 2133 | actual, |
| 2134 | RelocInfo::CODE_TARGET, |
| 2135 | flag, |
ricow@chromium.org | eb96f4f | 2011-03-09 13:41:48 +0000 | [diff] [blame] | 2136 | call_wrapper); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2137 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2138 | } |
| 2139 | |
| 2140 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2141 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
| 2142 | push(rbp); |
| 2143 | movq(rbp, rsp); |
| 2144 | push(rsi); // Context. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2145 | Push(Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2146 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 2147 | push(kScratchRegister); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2148 | if (emit_debug_code()) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2149 | movq(kScratchRegister, |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2150 | FACTORY->undefined_value(), |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2151 | RelocInfo::EMBEDDED_OBJECT); |
| 2152 | cmpq(Operand(rsp, 0), kScratchRegister); |
| 2153 | Check(not_equal, "code object not properly patched"); |
| 2154 | } |
| 2155 | } |
| 2156 | |
| 2157 | |
| 2158 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2159 | if (emit_debug_code()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2160 | Move(kScratchRegister, Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2161 | cmpq(Operand(rbp, StandardFrameConstants::kMarkerOffset), kScratchRegister); |
| 2162 | Check(equal, "stack frame types must match"); |
| 2163 | } |
| 2164 | movq(rsp, rbp); |
| 2165 | pop(rbp); |
| 2166 | } |
| 2167 | |
| 2168 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 2169 | void MacroAssembler::EnterExitFramePrologue(bool save_rax) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2170 | // Setup the frame structure on the stack. |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2171 | // 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] | 2172 | ASSERT(ExitFrameConstants::kCallerSPDisplacement == +2 * kPointerSize); |
| 2173 | ASSERT(ExitFrameConstants::kCallerPCOffset == +1 * kPointerSize); |
| 2174 | ASSERT(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize); |
| 2175 | push(rbp); |
| 2176 | movq(rbp, rsp); |
| 2177 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 2178 | // 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] | 2179 | ASSERT(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2180 | push(Immediate(0)); // Saved entry sp, patched before call. |
| 2181 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 2182 | push(kScratchRegister); // Accessed from EditFrame::code_slot. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2183 | |
| 2184 | // Save the frame pointer and the context in top. |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2185 | if (save_rax) { |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2186 | movq(r14, rax); // Backup rax in callee-save register. |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2187 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2188 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2189 | Store(ExternalReference(Isolate::k_c_entry_fp_address, isolate()), rbp); |
| 2190 | Store(ExternalReference(Isolate::k_context_address, isolate()), rsi); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2191 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2192 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 2193 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2194 | void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, |
| 2195 | bool save_doubles) { |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2196 | #ifdef _WIN64 |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2197 | const int kShadowSpace = 4; |
| 2198 | arg_stack_space += kShadowSpace; |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2199 | #endif |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2200 | // Optionally save all XMM registers. |
| 2201 | if (save_doubles) { |
| 2202 | CpuFeatures::Scope scope(SSE2); |
| 2203 | int space = XMMRegister::kNumRegisters * kDoubleSize + |
| 2204 | arg_stack_space * kPointerSize; |
| 2205 | subq(rsp, Immediate(space)); |
| 2206 | int offset = -2 * kPointerSize; |
| 2207 | for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) { |
| 2208 | XMMRegister reg = XMMRegister::FromAllocationIndex(i); |
| 2209 | movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); |
| 2210 | } |
| 2211 | } else if (arg_stack_space > 0) { |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 2212 | subq(rsp, Immediate(arg_stack_space * kPointerSize)); |
| 2213 | } |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2214 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2215 | // Get the required frame alignment for the OS. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2216 | const int kFrameAlignment = OS::ActivationFrameAlignment(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2217 | if (kFrameAlignment > 0) { |
| 2218 | ASSERT(IsPowerOf2(kFrameAlignment)); |
| 2219 | movq(kScratchRegister, Immediate(-kFrameAlignment)); |
| 2220 | and_(rsp, kScratchRegister); |
| 2221 | } |
| 2222 | |
| 2223 | // Patch the saved entry sp. |
| 2224 | movq(Operand(rbp, ExitFrameConstants::kSPOffset), rsp); |
| 2225 | } |
| 2226 | |
| 2227 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2228 | void MacroAssembler::EnterExitFrame(int arg_stack_space, bool save_doubles) { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 2229 | EnterExitFramePrologue(true); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2230 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2231 | // 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] | 2232 | // so it must be retained across the C-call. |
| 2233 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2234 | lea(r15, Operand(rbp, r14, times_pointer_size, offset)); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2235 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2236 | EnterExitFrameEpilogue(arg_stack_space, save_doubles); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2237 | } |
| 2238 | |
| 2239 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 2240 | void MacroAssembler::EnterApiExitFrame(int arg_stack_space) { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 2241 | EnterExitFramePrologue(false); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2242 | EnterExitFrameEpilogue(arg_stack_space, false); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2243 | } |
| 2244 | |
| 2245 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2246 | void MacroAssembler::LeaveExitFrame(bool save_doubles) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2247 | // Registers: |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2248 | // r15 : argv |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2249 | if (save_doubles) { |
| 2250 | int offset = -2 * kPointerSize; |
| 2251 | for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) { |
| 2252 | XMMRegister reg = XMMRegister::FromAllocationIndex(i); |
| 2253 | movsd(reg, Operand(rbp, offset - ((i + 1) * kDoubleSize))); |
| 2254 | } |
| 2255 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2256 | // Get the return address from the stack and restore the frame pointer. |
| 2257 | movq(rcx, Operand(rbp, 1 * kPointerSize)); |
| 2258 | movq(rbp, Operand(rbp, 0 * kPointerSize)); |
| 2259 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 2260 | // Drop everything up to and including the arguments and the receiver |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2261 | // from the caller stack. |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 2262 | lea(rsp, Operand(r15, 1 * kPointerSize)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2263 | |
erik.corry@gmail.com | 4a6c327 | 2010-11-18 12:04:40 +0000 | [diff] [blame] | 2264 | // Push the return address to get ready to return. |
| 2265 | push(rcx); |
| 2266 | |
| 2267 | LeaveExitFrameEpilogue(); |
| 2268 | } |
| 2269 | |
| 2270 | |
| 2271 | void MacroAssembler::LeaveApiExitFrame() { |
| 2272 | movq(rsp, rbp); |
| 2273 | pop(rbp); |
| 2274 | |
| 2275 | LeaveExitFrameEpilogue(); |
| 2276 | } |
| 2277 | |
| 2278 | |
| 2279 | void MacroAssembler::LeaveExitFrameEpilogue() { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2280 | // Restore current context from top and clear it in debug mode. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2281 | ExternalReference context_address(Isolate::k_context_address, isolate()); |
| 2282 | Operand context_operand = ExternalOperand(context_address); |
| 2283 | movq(rsi, context_operand); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2284 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2285 | movq(context_operand, Immediate(0)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2286 | #endif |
| 2287 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2288 | // Clear the top frame. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2289 | ExternalReference c_entry_fp_address(Isolate::k_c_entry_fp_address, |
| 2290 | isolate()); |
| 2291 | Operand c_entry_fp_operand = ExternalOperand(c_entry_fp_address); |
| 2292 | movq(c_entry_fp_operand, Immediate(0)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2293 | } |
| 2294 | |
| 2295 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2296 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 2297 | Register scratch, |
| 2298 | Label* miss) { |
| 2299 | Label same_contexts; |
| 2300 | |
| 2301 | ASSERT(!holder_reg.is(scratch)); |
| 2302 | ASSERT(!scratch.is(kScratchRegister)); |
| 2303 | // Load current lexical context from the stack frame. |
| 2304 | movq(scratch, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 2305 | |
| 2306 | // When generating debug code, make sure the lexical context is set. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2307 | if (emit_debug_code()) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2308 | cmpq(scratch, Immediate(0)); |
| 2309 | Check(not_equal, "we should not have an empty lexical context"); |
| 2310 | } |
| 2311 | // Load the global context of the current context. |
| 2312 | int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 2313 | movq(scratch, FieldOperand(scratch, offset)); |
| 2314 | movq(scratch, FieldOperand(scratch, GlobalObject::kGlobalContextOffset)); |
| 2315 | |
| 2316 | // Check the context is a global context. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2317 | if (emit_debug_code()) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2318 | Cmp(FieldOperand(scratch, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2319 | FACTORY->global_context_map()); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2320 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 2321 | } |
| 2322 | |
| 2323 | // Check if both contexts are the same. |
| 2324 | cmpq(scratch, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
| 2325 | j(equal, &same_contexts); |
| 2326 | |
| 2327 | // Compare security tokens. |
| 2328 | // Check that the security token in the calling global object is |
| 2329 | // compatible with the security token in the receiving global |
| 2330 | // object. |
| 2331 | |
| 2332 | // Check the context is a global context. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2333 | if (emit_debug_code()) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2334 | // Preserve original value of holder_reg. |
| 2335 | push(holder_reg); |
| 2336 | movq(holder_reg, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2337 | CompareRoot(holder_reg, Heap::kNullValueRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2338 | Check(not_equal, "JSGlobalProxy::context() should not be null."); |
| 2339 | |
| 2340 | // Read the first word and compare to global_context_map(), |
| 2341 | movq(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2342 | CompareRoot(holder_reg, Heap::kGlobalContextMapRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2343 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 2344 | pop(holder_reg); |
| 2345 | } |
| 2346 | |
| 2347 | movq(kScratchRegister, |
| 2348 | FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2349 | int token_offset = |
| 2350 | Context::kHeaderSize + Context::SECURITY_TOKEN_INDEX * kPointerSize; |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2351 | movq(scratch, FieldOperand(scratch, token_offset)); |
| 2352 | cmpq(scratch, FieldOperand(kScratchRegister, token_offset)); |
| 2353 | j(not_equal, miss); |
| 2354 | |
| 2355 | bind(&same_contexts); |
| 2356 | } |
| 2357 | |
| 2358 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2359 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2360 | Register scratch, |
| 2361 | AllocationFlags flags) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2362 | ExternalReference new_space_allocation_top = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2363 | ExternalReference::new_space_allocation_top_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2364 | |
| 2365 | // Just return if allocation top is already known. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2366 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2367 | // No use of scratch if allocation top is provided. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2368 | ASSERT(!scratch.is_valid()); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2369 | #ifdef DEBUG |
| 2370 | // Assert that result actually contains top on entry. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2371 | Operand top_operand = ExternalOperand(new_space_allocation_top); |
| 2372 | cmpq(result, top_operand); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2373 | Check(equal, "Unexpected allocation top"); |
| 2374 | #endif |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2375 | return; |
| 2376 | } |
| 2377 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2378 | // Move address of new object to result. Use scratch register if available, |
| 2379 | // and keep address in scratch until call to UpdateAllocationTopHelper. |
| 2380 | if (scratch.is_valid()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2381 | LoadAddress(scratch, new_space_allocation_top); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2382 | movq(result, Operand(scratch, 0)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2383 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2384 | Load(result, new_space_allocation_top); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2385 | } |
| 2386 | } |
| 2387 | |
| 2388 | |
| 2389 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
| 2390 | Register scratch) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2391 | if (emit_debug_code()) { |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2392 | testq(result_end, Immediate(kObjectAlignmentMask)); |
| 2393 | Check(zero, "Unaligned allocation in new space"); |
| 2394 | } |
| 2395 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2396 | ExternalReference new_space_allocation_top = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2397 | ExternalReference::new_space_allocation_top_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2398 | |
| 2399 | // Update new top. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2400 | if (scratch.is_valid()) { |
| 2401 | // Scratch already contains address of allocation top. |
| 2402 | movq(Operand(scratch, 0), result_end); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2403 | } else { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2404 | Store(new_space_allocation_top, result_end); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2405 | } |
| 2406 | } |
| 2407 | |
| 2408 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2409 | void MacroAssembler::AllocateInNewSpace(int object_size, |
| 2410 | Register result, |
| 2411 | Register result_end, |
| 2412 | Register scratch, |
| 2413 | Label* gc_required, |
| 2414 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2415 | if (!FLAG_inline_new) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2416 | if (emit_debug_code()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2417 | // Trash the registers to simulate an allocation failure. |
| 2418 | movl(result, Immediate(0x7091)); |
| 2419 | if (result_end.is_valid()) { |
| 2420 | movl(result_end, Immediate(0x7191)); |
| 2421 | } |
| 2422 | if (scratch.is_valid()) { |
| 2423 | movl(scratch, Immediate(0x7291)); |
| 2424 | } |
| 2425 | } |
| 2426 | jmp(gc_required); |
| 2427 | return; |
| 2428 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2429 | ASSERT(!result.is(result_end)); |
| 2430 | |
| 2431 | // Load address of new object into result. |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 2432 | LoadAllocationTopHelper(result, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2433 | |
| 2434 | // Calculate new top and bail out if new space is exhausted. |
| 2435 | ExternalReference new_space_allocation_limit = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2436 | ExternalReference::new_space_allocation_limit_address(isolate()); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2437 | |
| 2438 | Register top_reg = result_end.is_valid() ? result_end : result; |
| 2439 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 2440 | if (!top_reg.is(result)) { |
| 2441 | movq(top_reg, result); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2442 | } |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 2443 | addq(top_reg, Immediate(object_size)); |
| 2444 | j(carry, gc_required); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2445 | Operand limit_operand = ExternalOperand(new_space_allocation_limit); |
| 2446 | cmpq(top_reg, limit_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2447 | j(above, gc_required); |
| 2448 | |
| 2449 | // Update allocation top. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2450 | UpdateAllocationTopHelper(top_reg, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2451 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2452 | if (top_reg.is(result)) { |
| 2453 | if ((flags & TAG_OBJECT) != 0) { |
| 2454 | subq(result, Immediate(object_size - kHeapObjectTag)); |
| 2455 | } else { |
| 2456 | subq(result, Immediate(object_size)); |
| 2457 | } |
| 2458 | } else if ((flags & TAG_OBJECT) != 0) { |
| 2459 | // Tag the result if requested. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2460 | addq(result, Immediate(kHeapObjectTag)); |
| 2461 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2462 | } |
| 2463 | |
| 2464 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2465 | void MacroAssembler::AllocateInNewSpace(int header_size, |
| 2466 | ScaleFactor element_size, |
| 2467 | Register element_count, |
| 2468 | Register result, |
| 2469 | Register result_end, |
| 2470 | Register scratch, |
| 2471 | Label* gc_required, |
| 2472 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2473 | if (!FLAG_inline_new) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2474 | if (emit_debug_code()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2475 | // Trash the registers to simulate an allocation failure. |
| 2476 | movl(result, Immediate(0x7091)); |
| 2477 | movl(result_end, Immediate(0x7191)); |
| 2478 | if (scratch.is_valid()) { |
| 2479 | movl(scratch, Immediate(0x7291)); |
| 2480 | } |
| 2481 | // Register element_count is not modified by the function. |
| 2482 | } |
| 2483 | jmp(gc_required); |
| 2484 | return; |
| 2485 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2486 | ASSERT(!result.is(result_end)); |
| 2487 | |
| 2488 | // Load address of new object into result. |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 2489 | LoadAllocationTopHelper(result, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2490 | |
| 2491 | // Calculate new top and bail out if new space is exhausted. |
| 2492 | ExternalReference new_space_allocation_limit = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2493 | ExternalReference::new_space_allocation_limit_address(isolate()); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 2494 | |
| 2495 | // We assume that element_count*element_size + header_size does not |
| 2496 | // overflow. |
| 2497 | lea(result_end, Operand(element_count, element_size, header_size)); |
| 2498 | addq(result_end, result); |
| 2499 | j(carry, gc_required); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2500 | Operand limit_operand = ExternalOperand(new_space_allocation_limit); |
| 2501 | cmpq(result_end, limit_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2502 | j(above, gc_required); |
| 2503 | |
| 2504 | // Update allocation top. |
| 2505 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2506 | |
| 2507 | // Tag the result if requested. |
| 2508 | if ((flags & TAG_OBJECT) != 0) { |
| 2509 | addq(result, Immediate(kHeapObjectTag)); |
| 2510 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2511 | } |
| 2512 | |
| 2513 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2514 | void MacroAssembler::AllocateInNewSpace(Register object_size, |
| 2515 | Register result, |
| 2516 | Register result_end, |
| 2517 | Register scratch, |
| 2518 | Label* gc_required, |
| 2519 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2520 | if (!FLAG_inline_new) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2521 | if (emit_debug_code()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2522 | // Trash the registers to simulate an allocation failure. |
| 2523 | movl(result, Immediate(0x7091)); |
| 2524 | movl(result_end, Immediate(0x7191)); |
| 2525 | if (scratch.is_valid()) { |
| 2526 | movl(scratch, Immediate(0x7291)); |
| 2527 | } |
| 2528 | // object_size is left unchanged by this function. |
| 2529 | } |
| 2530 | jmp(gc_required); |
| 2531 | return; |
| 2532 | } |
| 2533 | ASSERT(!result.is(result_end)); |
| 2534 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2535 | // Load address of new object into result. |
ager@chromium.org | beb2571 | 2010-11-29 08:02:25 +0000 | [diff] [blame] | 2536 | LoadAllocationTopHelper(result, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2537 | |
| 2538 | // Calculate new top and bail out if new space is exhausted. |
| 2539 | ExternalReference new_space_allocation_limit = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2540 | ExternalReference::new_space_allocation_limit_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2541 | if (!object_size.is(result_end)) { |
| 2542 | movq(result_end, object_size); |
| 2543 | } |
| 2544 | addq(result_end, result); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 2545 | j(carry, gc_required); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2546 | Operand limit_operand = ExternalOperand(new_space_allocation_limit); |
| 2547 | cmpq(result_end, limit_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2548 | j(above, gc_required); |
| 2549 | |
| 2550 | // Update allocation top. |
| 2551 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2552 | |
| 2553 | // Tag the result if requested. |
| 2554 | if ((flags & TAG_OBJECT) != 0) { |
| 2555 | addq(result, Immediate(kHeapObjectTag)); |
| 2556 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2557 | } |
| 2558 | |
| 2559 | |
| 2560 | void MacroAssembler::UndoAllocationInNewSpace(Register object) { |
| 2561 | ExternalReference new_space_allocation_top = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2562 | ExternalReference::new_space_allocation_top_address(isolate()); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2563 | |
| 2564 | // Make sure the object has no tag before resetting top. |
| 2565 | and_(object, Immediate(~kHeapObjectTagMask)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2566 | Operand top_operand = ExternalOperand(new_space_allocation_top); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2567 | #ifdef DEBUG |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2568 | cmpq(object, top_operand); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2569 | Check(below, "Undo allocation of non allocated memory"); |
| 2570 | #endif |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2571 | movq(top_operand, object); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2572 | } |
| 2573 | |
| 2574 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 2575 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 2576 | Register scratch, |
| 2577 | Label* gc_required) { |
| 2578 | // Allocate heap number in new space. |
| 2579 | AllocateInNewSpace(HeapNumber::kSize, |
| 2580 | result, |
| 2581 | scratch, |
| 2582 | no_reg, |
| 2583 | gc_required, |
| 2584 | TAG_OBJECT); |
| 2585 | |
| 2586 | // Set the map. |
| 2587 | LoadRoot(kScratchRegister, Heap::kHeapNumberMapRootIndex); |
| 2588 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2589 | } |
| 2590 | |
| 2591 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2592 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 2593 | Register length, |
| 2594 | Register scratch1, |
| 2595 | Register scratch2, |
| 2596 | Register scratch3, |
| 2597 | Label* gc_required) { |
| 2598 | // Calculate the number of bytes needed for the characters in the string while |
| 2599 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2600 | const int kHeaderAlignment = SeqTwoByteString::kHeaderSize & |
| 2601 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2602 | ASSERT(kShortSize == 2); |
| 2603 | // scratch1 = length * 2 + kObjectAlignmentMask. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2604 | lea(scratch1, Operand(length, length, times_1, kObjectAlignmentMask + |
| 2605 | kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2606 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2607 | if (kHeaderAlignment > 0) { |
| 2608 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 2609 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2610 | |
| 2611 | // Allocate two byte string in new space. |
| 2612 | AllocateInNewSpace(SeqTwoByteString::kHeaderSize, |
| 2613 | times_1, |
| 2614 | scratch1, |
| 2615 | result, |
| 2616 | scratch2, |
| 2617 | scratch3, |
| 2618 | gc_required, |
| 2619 | TAG_OBJECT); |
| 2620 | |
| 2621 | // Set the map, length and hash field. |
| 2622 | LoadRoot(kScratchRegister, Heap::kStringMapRootIndex); |
| 2623 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2624 | Integer32ToSmi(scratch1, length); |
| 2625 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2626 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2627 | Immediate(String::kEmptyHashField)); |
| 2628 | } |
| 2629 | |
| 2630 | |
| 2631 | void MacroAssembler::AllocateAsciiString(Register result, |
| 2632 | Register length, |
| 2633 | Register scratch1, |
| 2634 | Register scratch2, |
| 2635 | Register scratch3, |
| 2636 | Label* gc_required) { |
| 2637 | // Calculate the number of bytes needed for the characters in the string while |
| 2638 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2639 | const int kHeaderAlignment = SeqAsciiString::kHeaderSize & |
| 2640 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2641 | movl(scratch1, length); |
| 2642 | ASSERT(kCharSize == 1); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2643 | addq(scratch1, Immediate(kObjectAlignmentMask + kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2644 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2645 | if (kHeaderAlignment > 0) { |
| 2646 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 2647 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2648 | |
| 2649 | // Allocate ascii string in new space. |
| 2650 | AllocateInNewSpace(SeqAsciiString::kHeaderSize, |
| 2651 | times_1, |
| 2652 | scratch1, |
| 2653 | result, |
| 2654 | scratch2, |
| 2655 | scratch3, |
| 2656 | gc_required, |
| 2657 | TAG_OBJECT); |
| 2658 | |
| 2659 | // Set the map, length and hash field. |
| 2660 | LoadRoot(kScratchRegister, Heap::kAsciiStringMapRootIndex); |
| 2661 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2662 | Integer32ToSmi(scratch1, length); |
| 2663 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2664 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2665 | Immediate(String::kEmptyHashField)); |
| 2666 | } |
| 2667 | |
| 2668 | |
| 2669 | void MacroAssembler::AllocateConsString(Register result, |
| 2670 | Register scratch1, |
| 2671 | Register scratch2, |
| 2672 | Label* gc_required) { |
| 2673 | // Allocate heap number in new space. |
| 2674 | AllocateInNewSpace(ConsString::kSize, |
| 2675 | result, |
| 2676 | scratch1, |
| 2677 | scratch2, |
| 2678 | gc_required, |
| 2679 | TAG_OBJECT); |
| 2680 | |
| 2681 | // Set the map. The other fields are left uninitialized. |
| 2682 | LoadRoot(kScratchRegister, Heap::kConsStringMapRootIndex); |
| 2683 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2684 | } |
| 2685 | |
| 2686 | |
| 2687 | void MacroAssembler::AllocateAsciiConsString(Register result, |
| 2688 | Register scratch1, |
| 2689 | Register scratch2, |
| 2690 | Label* gc_required) { |
| 2691 | // Allocate heap number in new space. |
| 2692 | AllocateInNewSpace(ConsString::kSize, |
| 2693 | result, |
| 2694 | scratch1, |
| 2695 | scratch2, |
| 2696 | gc_required, |
| 2697 | TAG_OBJECT); |
| 2698 | |
| 2699 | // Set the map. The other fields are left uninitialized. |
| 2700 | LoadRoot(kScratchRegister, Heap::kConsAsciiStringMapRootIndex); |
| 2701 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2702 | } |
| 2703 | |
| 2704 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame^] | 2705 | // Copy memory, byte-by-byte, from source to destination. Not optimized for |
| 2706 | // long or aligned copies. The contents of scratch and length are destroyed. |
| 2707 | // Destination is incremented by length, source, length and scratch are |
| 2708 | // clobbered. |
| 2709 | // A simpler loop is faster on small copies, but slower on large ones. |
| 2710 | // The cld() instruction must have been emitted, to set the direction flag(), |
| 2711 | // before calling this function. |
| 2712 | void MacroAssembler::CopyBytes(Register destination, |
| 2713 | Register source, |
| 2714 | Register length, |
| 2715 | int min_length, |
| 2716 | Register scratch) { |
| 2717 | ASSERT(min_length >= 0); |
| 2718 | if (FLAG_debug_code) { |
| 2719 | cmpl(length, Immediate(min_length)); |
| 2720 | Assert(greater_equal, "Invalid min_length"); |
| 2721 | } |
| 2722 | Label loop, done, short_string, short_loop; |
| 2723 | |
| 2724 | const int kLongStringLimit = 20; |
| 2725 | if (min_length <= kLongStringLimit) { |
| 2726 | cmpl(length, Immediate(kLongStringLimit)); |
| 2727 | j(less_equal, &short_string); |
| 2728 | } |
| 2729 | |
| 2730 | ASSERT(source.is(rsi)); |
| 2731 | ASSERT(destination.is(rdi)); |
| 2732 | ASSERT(length.is(rcx)); |
| 2733 | |
| 2734 | // Because source is 8-byte aligned in our uses of this function, |
| 2735 | // we keep source aligned for the rep movs operation by copying the odd bytes |
| 2736 | // at the end of the ranges. |
| 2737 | movq(scratch, length); |
| 2738 | shrl(length, Immediate(3)); |
| 2739 | repmovsq(); |
| 2740 | // Move remaining bytes of length. |
| 2741 | andl(scratch, Immediate(0x7)); |
| 2742 | movq(length, Operand(source, scratch, times_1, -8)); |
| 2743 | movq(Operand(destination, scratch, times_1, -8), length); |
| 2744 | addq(destination, scratch); |
| 2745 | |
| 2746 | if (min_length <= kLongStringLimit) { |
| 2747 | jmp(&done); |
| 2748 | |
| 2749 | bind(&short_string); |
| 2750 | if (min_length == 0) { |
| 2751 | testl(length, length); |
| 2752 | j(zero, &done); |
| 2753 | } |
| 2754 | lea(scratch, Operand(destination, length, times_1, 0)); |
| 2755 | |
| 2756 | bind(&short_loop); |
| 2757 | movb(length, Operand(source, 0)); |
| 2758 | movb(Operand(destination, 0), length); |
| 2759 | incq(source); |
| 2760 | incq(destination); |
| 2761 | cmpq(destination, scratch); |
| 2762 | j(not_equal, &short_loop); |
| 2763 | |
| 2764 | bind(&done); |
| 2765 | } |
| 2766 | } |
| 2767 | |
| 2768 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2769 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 2770 | if (context_chain_length > 0) { |
| 2771 | // Move up the chain of contexts to the context containing the slot. |
| 2772 | movq(dst, Operand(rsi, Context::SlotOffset(Context::CLOSURE_INDEX))); |
| 2773 | // Load the function context (which is the incoming, outer context). |
lrn@chromium.org | d5649e3 | 2010-01-19 13:36:12 +0000 | [diff] [blame] | 2774 | movq(dst, FieldOperand(dst, JSFunction::kContextOffset)); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2775 | for (int i = 1; i < context_chain_length; i++) { |
| 2776 | movq(dst, Operand(dst, Context::SlotOffset(Context::CLOSURE_INDEX))); |
| 2777 | movq(dst, FieldOperand(dst, JSFunction::kContextOffset)); |
| 2778 | } |
| 2779 | // The context may be an intermediate context, not a function context. |
| 2780 | movq(dst, Operand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 2781 | } else { |
| 2782 | // Slot is in the current function context. Move it into the |
| 2783 | // destination register in case we store into it (the write barrier |
| 2784 | // cannot be allowed to destroy the context in rsi). |
| 2785 | movq(dst, rsi); |
| 2786 | } |
| 2787 | |
| 2788 | // We should not have found a 'with' context by walking the context chain |
| 2789 | // (i.e., the static scope chain and runtime context chain do not agree). |
| 2790 | // A variable occurring in such a scope should have slot type LOOKUP and |
| 2791 | // not CONTEXT. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2792 | if (emit_debug_code()) { |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 2793 | cmpq(dst, Operand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); |
| 2794 | Check(equal, "Yo dawg, I heard you liked function contexts " |
| 2795 | "so I put function contexts in all your contexts"); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2796 | } |
| 2797 | } |
| 2798 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2799 | #ifdef _WIN64 |
| 2800 | static const int kRegisterPassedArguments = 4; |
| 2801 | #else |
| 2802 | static const int kRegisterPassedArguments = 6; |
| 2803 | #endif |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2804 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2805 | void MacroAssembler::LoadGlobalFunction(int index, Register function) { |
| 2806 | // Load the global or builtins object from the current context. |
| 2807 | movq(function, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 2808 | // Load the global context from the global or builtins object. |
| 2809 | movq(function, FieldOperand(function, GlobalObject::kGlobalContextOffset)); |
| 2810 | // Load the function from the global context. |
| 2811 | movq(function, Operand(function, Context::SlotOffset(index))); |
| 2812 | } |
| 2813 | |
| 2814 | |
| 2815 | void MacroAssembler::LoadGlobalFunctionInitialMap(Register function, |
| 2816 | Register map) { |
| 2817 | // Load the initial map. The global functions all have initial maps. |
| 2818 | movq(map, FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2819 | if (emit_debug_code()) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2820 | Label ok, fail; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2821 | CheckMap(map, FACTORY->meta_map(), &fail, false); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2822 | jmp(&ok); |
| 2823 | bind(&fail); |
| 2824 | Abort("Global functions must have initial map"); |
| 2825 | bind(&ok); |
| 2826 | } |
| 2827 | } |
| 2828 | |
| 2829 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2830 | int MacroAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2831 | // On Windows 64 stack slots are reserved by the caller for all arguments |
| 2832 | // including the ones passed in registers, and space is always allocated for |
| 2833 | // the four register arguments even if the function takes fewer than four |
| 2834 | // arguments. |
| 2835 | // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers |
| 2836 | // and the caller does not reserve stack slots for them. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2837 | ASSERT(num_arguments >= 0); |
| 2838 | #ifdef _WIN64 |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2839 | const int kMinimumStackSlots = kRegisterPassedArguments; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2840 | if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
| 2841 | return num_arguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2842 | #else |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2843 | if (num_arguments < kRegisterPassedArguments) return 0; |
| 2844 | return num_arguments - kRegisterPassedArguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2845 | #endif |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2846 | } |
| 2847 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2848 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2849 | void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
| 2850 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 2851 | ASSERT(frame_alignment != 0); |
| 2852 | ASSERT(num_arguments >= 0); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2853 | |
| 2854 | // Reserve space for Isolate address which is always passed as last parameter |
| 2855 | num_arguments += 1; |
| 2856 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2857 | // Make stack end at alignment and allocate space for arguments and old rsp. |
| 2858 | movq(kScratchRegister, rsp); |
| 2859 | ASSERT(IsPowerOf2(frame_alignment)); |
| 2860 | int argument_slots_on_stack = |
| 2861 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 2862 | subq(rsp, Immediate((argument_slots_on_stack + 1) * kPointerSize)); |
| 2863 | and_(rsp, Immediate(-frame_alignment)); |
| 2864 | movq(Operand(rsp, argument_slots_on_stack * kPointerSize), kScratchRegister); |
| 2865 | } |
| 2866 | |
| 2867 | |
| 2868 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 2869 | int num_arguments) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2870 | LoadAddress(rax, function); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2871 | CallCFunction(rax, num_arguments); |
| 2872 | } |
| 2873 | |
| 2874 | |
| 2875 | void MacroAssembler::CallCFunction(Register function, int num_arguments) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2876 | // Pass current isolate address as additional parameter. |
| 2877 | if (num_arguments < kRegisterPassedArguments) { |
| 2878 | #ifdef _WIN64 |
| 2879 | // First four arguments are passed in registers on Windows. |
| 2880 | Register arg_to_reg[] = {rcx, rdx, r8, r9}; |
| 2881 | #else |
| 2882 | // First six arguments are passed in registers on other platforms. |
| 2883 | Register arg_to_reg[] = {rdi, rsi, rdx, rcx, r8, r9}; |
| 2884 | #endif |
| 2885 | Register reg = arg_to_reg[num_arguments]; |
| 2886 | LoadAddress(reg, ExternalReference::isolate_address()); |
| 2887 | } else { |
| 2888 | // Push Isolate pointer after all parameters. |
| 2889 | int argument_slots_on_stack = |
| 2890 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 2891 | LoadAddress(kScratchRegister, ExternalReference::isolate_address()); |
| 2892 | movq(Operand(rsp, argument_slots_on_stack * kPointerSize), |
| 2893 | kScratchRegister); |
| 2894 | } |
| 2895 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 2896 | // Check stack alignment. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 2897 | if (emit_debug_code()) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 2898 | CheckStackAlignment(); |
| 2899 | } |
| 2900 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2901 | call(function); |
| 2902 | ASSERT(OS::ActivationFrameAlignment() != 0); |
| 2903 | ASSERT(num_arguments >= 0); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2904 | num_arguments += 1; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2905 | int argument_slots_on_stack = |
| 2906 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 2907 | movq(rsp, Operand(rsp, argument_slots_on_stack * kPointerSize)); |
| 2908 | } |
| 2909 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2910 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2911 | CodePatcher::CodePatcher(byte* address, int size) |
| 2912 | : address_(address), size_(size), masm_(address, size + Assembler::kGap) { |
| 2913 | // Create a new macro assembler pointing to the address of the code to patch. |
| 2914 | // The size is adjusted with kGap on order for the assembler to generate size |
| 2915 | // bytes of instructions without failing with buffer size constraints. |
| 2916 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 2917 | } |
| 2918 | |
| 2919 | |
| 2920 | CodePatcher::~CodePatcher() { |
| 2921 | // Indicate that code has changed. |
| 2922 | CPU::FlushICache(address_, size_); |
| 2923 | |
| 2924 | // Check that the code was patched as expected. |
| 2925 | ASSERT(masm_.pc_ == address_ + size_); |
| 2926 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 2927 | } |
| 2928 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 2929 | } } // namespace v8::internal |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2930 | |
| 2931 | #endif // V8_TARGET_ARCH_X64 |