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