ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 1 | // Copyright 2009 the V8 project authors. All rights reserved. |
| 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) { |
whesse@chromium.org | b6e43bb | 2010-04-14 09:36:28 +0000 | [diff] [blame] | 52 | movq(destination, Operand(kRootRegister, index << kPointerSizeLog2)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 53 | } |
| 54 | |
| 55 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 56 | void MacroAssembler::StoreRoot(Register source, Heap::RootListIndex index) { |
| 57 | movq(Operand(kRootRegister, index << kPointerSizeLog2), source); |
| 58 | } |
| 59 | |
| 60 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 61 | void MacroAssembler::PushRoot(Heap::RootListIndex index) { |
whesse@chromium.org | b6e43bb | 2010-04-14 09:36:28 +0000 | [diff] [blame] | 62 | push(Operand(kRootRegister, index << kPointerSizeLog2)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 66 | void MacroAssembler::CompareRoot(Register with, Heap::RootListIndex index) { |
whesse@chromium.org | b6e43bb | 2010-04-14 09:36:28 +0000 | [diff] [blame] | 67 | cmpq(with, Operand(kRootRegister, index << kPointerSizeLog2)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 68 | } |
| 69 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 70 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 71 | void MacroAssembler::CompareRoot(Operand with, Heap::RootListIndex index) { |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 72 | LoadRoot(kScratchRegister, index); |
| 73 | cmpq(with, kScratchRegister); |
| 74 | } |
| 75 | |
| 76 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 77 | void MacroAssembler::StackLimitCheck(Label* on_stack_overflow) { |
| 78 | CompareRoot(rsp, Heap::kStackLimitRootIndex); |
| 79 | j(below, on_stack_overflow); |
| 80 | } |
| 81 | |
| 82 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 83 | void MacroAssembler::RecordWriteHelper(Register object, |
| 84 | Register addr, |
| 85 | Register scratch) { |
| 86 | if (FLAG_debug_code) { |
| 87 | // Check that the object is not in new space. |
| 88 | Label not_in_new_space; |
| 89 | InNewSpace(object, scratch, not_equal, ¬_in_new_space); |
| 90 | Abort("new-space object passed to RecordWriteHelper"); |
| 91 | bind(¬_in_new_space); |
| 92 | } |
| 93 | |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 94 | // Compute the page start address from the heap object pointer, and reuse |
| 95 | // the 'object' register for it. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 96 | and_(object, Immediate(~Page::kPageAlignmentMask)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 97 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 98 | // Compute number of region covering addr. See Page::GetRegionNumberForAddress |
| 99 | // method for more details. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 100 | shrl(addr, Immediate(Page::kRegionSizeLog2)); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 101 | andl(addr, Immediate(Page::kPageAlignmentMask >> Page::kRegionSizeLog2)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 102 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 103 | // Set dirty mark for region. |
| 104 | bts(Operand(object, Page::kDirtyFlagOffset), addr); |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 108 | void MacroAssembler::RecordWrite(Register object, |
| 109 | int offset, |
| 110 | Register value, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 111 | Register index) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 112 | // The compiled code assumes that record write doesn't change the |
| 113 | // context register, so we check that none of the clobbered |
| 114 | // registers are rsi. |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 115 | ASSERT(!object.is(rsi) && !value.is(rsi) && !index.is(rsi)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 116 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 117 | // First, check if a write barrier is even needed. The tests below |
| 118 | // catch stores of Smis and stores into young gen. |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 119 | Label done; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 120 | JumpIfSmi(value, &done); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 121 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 122 | RecordWriteNonSmi(object, offset, value, index); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 123 | bind(&done); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 124 | |
| 125 | // Clobber all input registers when running with the debug-code flag |
| 126 | // turned on to provoke errors. This clobbering repeats the |
| 127 | // clobbering done inside RecordWriteNonSmi but it's necessary to |
| 128 | // avoid having the fast case for smis leave the registers |
| 129 | // unchanged. |
| 130 | if (FLAG_debug_code) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 131 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 132 | movq(value, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 133 | movq(index, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 134 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 138 | void MacroAssembler::RecordWrite(Register object, |
| 139 | Register address, |
| 140 | Register value) { |
| 141 | // The compiled code assumes that record write doesn't change the |
| 142 | // context register, so we check that none of the clobbered |
| 143 | // registers are esi. |
| 144 | ASSERT(!object.is(rsi) && !value.is(rsi) && !address.is(rsi)); |
| 145 | |
| 146 | // First, check if a write barrier is even needed. The tests below |
| 147 | // catch stores of Smis and stores into young gen. |
| 148 | Label done; |
| 149 | JumpIfSmi(value, &done); |
| 150 | |
| 151 | InNewSpace(object, value, equal, &done); |
| 152 | |
| 153 | RecordWriteHelper(object, address, value); |
| 154 | |
| 155 | bind(&done); |
| 156 | |
| 157 | // Clobber all input registers when running with the debug-code flag |
| 158 | // turned on to provoke errors. |
| 159 | if (FLAG_debug_code) { |
| 160 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 161 | movq(address, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 162 | movq(value, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 167 | void MacroAssembler::RecordWriteNonSmi(Register object, |
| 168 | int offset, |
| 169 | Register scratch, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 170 | Register index) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 171 | Label done; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 172 | |
| 173 | if (FLAG_debug_code) { |
| 174 | Label okay; |
| 175 | JumpIfNotSmi(object, &okay); |
| 176 | Abort("MacroAssembler::RecordWriteNonSmi cannot deal with smis"); |
| 177 | bind(&okay); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 178 | |
| 179 | if (offset == 0) { |
| 180 | // index must be int32. |
| 181 | Register tmp = index.is(rax) ? rbx : rax; |
| 182 | push(tmp); |
| 183 | movl(tmp, index); |
| 184 | cmpq(tmp, index); |
| 185 | Check(equal, "Index register for RecordWrite must be untagged int32."); |
| 186 | pop(tmp); |
| 187 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 188 | } |
| 189 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 190 | // Test that the object address is not in the new space. We cannot |
| 191 | // update page dirty marks for new space pages. |
kmillikin@chromium.org | 4111b80 | 2010-05-03 10:34:42 +0000 | [diff] [blame] | 192 | InNewSpace(object, scratch, equal, &done); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 193 | |
whesse@chromium.org | e88a9ed | 2010-04-15 15:07:46 +0000 | [diff] [blame] | 194 | // The offset is relative to a tagged or untagged HeapObject pointer, |
| 195 | // so either offset or offset + kHeapObjectTag must be a |
| 196 | // multiple of kPointerSize. |
| 197 | ASSERT(IsAligned(offset, kPointerSize) || |
| 198 | IsAligned(offset + kHeapObjectTag, kPointerSize)); |
| 199 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 200 | Register dst = index; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 201 | if (offset != 0) { |
| 202 | lea(dst, Operand(object, offset)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 203 | } else { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 204 | // array access: calculate the destination address in the same manner as |
| 205 | // KeyedStoreIC::GenerateGeneric. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 206 | lea(dst, FieldOperand(object, |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 207 | index, |
| 208 | times_pointer_size, |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 209 | FixedArray::kHeaderSize)); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 210 | } |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 211 | RecordWriteHelper(object, dst, scratch); |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 212 | |
| 213 | bind(&done); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 214 | |
| 215 | // Clobber all input registers when running with the debug-code flag |
| 216 | // turned on to provoke errors. |
| 217 | if (FLAG_debug_code) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 218 | movq(object, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
| 219 | movq(scratch, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 220 | movq(index, BitCast<int64_t>(kZapValue), RelocInfo::NONE); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 221 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 225 | void MacroAssembler::InNewSpace(Register object, |
| 226 | Register scratch, |
| 227 | Condition cc, |
| 228 | Label* branch) { |
| 229 | if (Serializer::enabled()) { |
| 230 | // Can't do arithmetic on external references if it might get serialized. |
| 231 | // The mask isn't really an address. We load it as an external reference in |
| 232 | // case the size of the new space is different between the snapshot maker |
| 233 | // and the running system. |
| 234 | if (scratch.is(object)) { |
| 235 | movq(kScratchRegister, ExternalReference::new_space_mask()); |
| 236 | and_(scratch, kScratchRegister); |
| 237 | } else { |
| 238 | movq(scratch, ExternalReference::new_space_mask()); |
| 239 | and_(scratch, object); |
| 240 | } |
| 241 | movq(kScratchRegister, ExternalReference::new_space_start()); |
| 242 | cmpq(scratch, kScratchRegister); |
| 243 | j(cc, branch); |
| 244 | } else { |
| 245 | ASSERT(is_int32(static_cast<int64_t>(Heap::NewSpaceMask()))); |
| 246 | intptr_t new_space_start = |
| 247 | reinterpret_cast<intptr_t>(Heap::NewSpaceStart()); |
| 248 | movq(kScratchRegister, -new_space_start, RelocInfo::NONE); |
| 249 | if (scratch.is(object)) { |
| 250 | addq(scratch, kScratchRegister); |
| 251 | } else { |
| 252 | lea(scratch, Operand(object, kScratchRegister, times_1, 0)); |
| 253 | } |
| 254 | and_(scratch, Immediate(static_cast<int32_t>(Heap::NewSpaceMask()))); |
| 255 | j(cc, branch); |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 260 | void MacroAssembler::Assert(Condition cc, const char* msg) { |
| 261 | if (FLAG_debug_code) Check(cc, msg); |
| 262 | } |
| 263 | |
| 264 | |
| 265 | void MacroAssembler::Check(Condition cc, const char* msg) { |
| 266 | Label L; |
| 267 | j(cc, &L); |
| 268 | Abort(msg); |
| 269 | // will not return here |
| 270 | bind(&L); |
| 271 | } |
| 272 | |
| 273 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 274 | void MacroAssembler::CheckStackAlignment() { |
| 275 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 276 | int frame_alignment_mask = frame_alignment - 1; |
| 277 | if (frame_alignment > kPointerSize) { |
| 278 | ASSERT(IsPowerOf2(frame_alignment)); |
| 279 | Label alignment_as_expected; |
| 280 | testq(rsp, Immediate(frame_alignment_mask)); |
| 281 | j(zero, &alignment_as_expected); |
| 282 | // Abort if stack is not aligned. |
| 283 | int3(); |
| 284 | bind(&alignment_as_expected); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 289 | void MacroAssembler::NegativeZeroTest(Register result, |
| 290 | Register op, |
| 291 | Label* then_label) { |
| 292 | Label ok; |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 293 | testl(result, result); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 294 | j(not_zero, &ok); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 295 | testl(op, op); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 296 | j(sign, then_label); |
| 297 | bind(&ok); |
| 298 | } |
| 299 | |
| 300 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 301 | void MacroAssembler::Abort(const char* msg) { |
| 302 | // We want to pass the msg string like a smi to avoid GC |
| 303 | // problems, however msg is not guaranteed to be aligned |
| 304 | // properly. Instead, we pass an aligned pointer that is |
| 305 | // a proper v8 smi, but also pass the alignment difference |
| 306 | // from the real pointer as a smi. |
| 307 | intptr_t p1 = reinterpret_cast<intptr_t>(msg); |
| 308 | intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; |
| 309 | // Note: p0 might not be a valid Smi *value*, but it has a valid Smi tag. |
| 310 | ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); |
| 311 | #ifdef DEBUG |
| 312 | if (msg != NULL) { |
| 313 | RecordComment("Abort message: "); |
| 314 | RecordComment(msg); |
| 315 | } |
| 316 | #endif |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 317 | // Disable stub call restrictions to always allow calls to abort. |
| 318 | set_allow_stub_calls(true); |
| 319 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 320 | push(rax); |
| 321 | movq(kScratchRegister, p0, RelocInfo::NONE); |
| 322 | push(kScratchRegister); |
| 323 | movq(kScratchRegister, |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 324 | reinterpret_cast<intptr_t>(Smi::FromInt(static_cast<int>(p1 - p0))), |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 325 | RelocInfo::NONE); |
| 326 | push(kScratchRegister); |
| 327 | CallRuntime(Runtime::kAbort, 2); |
| 328 | // will not return here |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 329 | int3(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | |
| 333 | void MacroAssembler::CallStub(CodeStub* stub) { |
| 334 | ASSERT(allow_stub_calls()); // calls are not allowed in some stubs |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 335 | Call(stub->GetCode(), RelocInfo::CODE_TARGET); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 339 | Object* MacroAssembler::TryCallStub(CodeStub* stub) { |
| 340 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
| 341 | Object* result = stub->TryGetCode(); |
| 342 | if (!result->IsFailure()) { |
| 343 | call(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET); |
| 344 | } |
| 345 | return result; |
| 346 | } |
| 347 | |
| 348 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 349 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
| 350 | ASSERT(allow_stub_calls()); // calls are not allowed in some stubs |
| 351 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 352 | } |
| 353 | |
| 354 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 355 | Object* MacroAssembler::TryTailCallStub(CodeStub* stub) { |
| 356 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
| 357 | Object* result = stub->TryGetCode(); |
| 358 | if (!result->IsFailure()) { |
| 359 | jmp(Handle<Code>(Code::cast(result)), RelocInfo::CODE_TARGET); |
| 360 | } |
| 361 | return result; |
| 362 | } |
| 363 | |
| 364 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 365 | void MacroAssembler::StubReturn(int argc) { |
| 366 | ASSERT(argc >= 1 && generating_stub()); |
| 367 | ret((argc - 1) * kPointerSize); |
| 368 | } |
| 369 | |
| 370 | |
| 371 | void MacroAssembler::IllegalOperation(int num_arguments) { |
| 372 | if (num_arguments > 0) { |
| 373 | addq(rsp, Immediate(num_arguments * kPointerSize)); |
| 374 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 375 | LoadRoot(rax, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | |
| 379 | void MacroAssembler::CallRuntime(Runtime::FunctionId id, int num_arguments) { |
| 380 | CallRuntime(Runtime::FunctionForId(id), num_arguments); |
| 381 | } |
| 382 | |
| 383 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 384 | Object* MacroAssembler::TryCallRuntime(Runtime::FunctionId id, |
| 385 | int num_arguments) { |
| 386 | return TryCallRuntime(Runtime::FunctionForId(id), num_arguments); |
| 387 | } |
| 388 | |
| 389 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 390 | void MacroAssembler::CallRuntime(Runtime::Function* f, int num_arguments) { |
| 391 | // If the expected number of arguments of the runtime function is |
| 392 | // constant, we check that the actual number of arguments match the |
| 393 | // expectation. |
| 394 | if (f->nargs >= 0 && f->nargs != num_arguments) { |
| 395 | IllegalOperation(num_arguments); |
| 396 | return; |
| 397 | } |
| 398 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 399 | // TODO(1236192): Most runtime routines don't need the number of |
| 400 | // arguments passed in because it is constant. At some point we |
| 401 | // should remove this need and make the runtime routine entry code |
| 402 | // smarter. |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 403 | Set(rax, num_arguments); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 404 | movq(rbx, ExternalReference(f)); |
| 405 | CEntryStub ces(f->result_size); |
| 406 | CallStub(&ces); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 407 | } |
| 408 | |
| 409 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 410 | Object* MacroAssembler::TryCallRuntime(Runtime::Function* f, |
| 411 | int num_arguments) { |
| 412 | if (f->nargs >= 0 && f->nargs != num_arguments) { |
| 413 | IllegalOperation(num_arguments); |
| 414 | // Since we did not call the stub, there was no allocation failure. |
| 415 | // Return some non-failure object. |
| 416 | return Heap::undefined_value(); |
| 417 | } |
| 418 | |
| 419 | // TODO(1236192): Most runtime routines don't need the number of |
| 420 | // arguments passed in because it is constant. At some point we |
| 421 | // should remove this need and make the runtime routine entry code |
| 422 | // smarter. |
| 423 | Set(rax, num_arguments); |
| 424 | movq(rbx, ExternalReference(f)); |
| 425 | CEntryStub ces(f->result_size); |
| 426 | return TryCallStub(&ces); |
| 427 | } |
| 428 | |
| 429 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 430 | void MacroAssembler::CallExternalReference(const ExternalReference& ext, |
| 431 | int num_arguments) { |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 432 | Set(rax, num_arguments); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 433 | movq(rbx, ext); |
| 434 | |
| 435 | CEntryStub stub(1); |
| 436 | CallStub(&stub); |
| 437 | } |
| 438 | |
| 439 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 440 | void MacroAssembler::TailCallExternalReference(const ExternalReference& ext, |
| 441 | int num_arguments, |
| 442 | int result_size) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 443 | // ----------- S t a t e ------------- |
| 444 | // -- rsp[0] : return address |
| 445 | // -- rsp[8] : argument num_arguments - 1 |
| 446 | // ... |
| 447 | // -- rsp[8 * num_arguments] : argument 0 (receiver) |
| 448 | // ----------------------------------- |
| 449 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 450 | // TODO(1236192): Most runtime routines don't need the number of |
| 451 | // arguments passed in because it is constant. At some point we |
| 452 | // should remove this need and make the runtime routine entry code |
| 453 | // smarter. |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 454 | Set(rax, num_arguments); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 455 | JumpToExternalReference(ext, result_size); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 456 | } |
| 457 | |
| 458 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 459 | void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid, |
| 460 | int num_arguments, |
| 461 | int result_size) { |
| 462 | TailCallExternalReference(ExternalReference(fid), num_arguments, result_size); |
| 463 | } |
| 464 | |
| 465 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 466 | static int Offset(ExternalReference ref0, ExternalReference ref1) { |
| 467 | int64_t offset = (ref0.address() - ref1.address()); |
| 468 | // Check that fits into int. |
| 469 | ASSERT(static_cast<int>(offset) == offset); |
| 470 | return static_cast<int>(offset); |
| 471 | } |
| 472 | |
| 473 | |
| 474 | void MacroAssembler::PushHandleScope(Register scratch) { |
| 475 | ExternalReference extensions_address = |
| 476 | ExternalReference::handle_scope_extensions_address(); |
| 477 | const int kExtensionsOffset = 0; |
| 478 | const int kNextOffset = Offset( |
| 479 | ExternalReference::handle_scope_next_address(), |
| 480 | extensions_address); |
| 481 | const int kLimitOffset = Offset( |
| 482 | ExternalReference::handle_scope_limit_address(), |
| 483 | extensions_address); |
| 484 | |
| 485 | // Push the number of extensions, smi-tagged so the gc will ignore it. |
| 486 | movq(kScratchRegister, extensions_address); |
| 487 | movq(scratch, Operand(kScratchRegister, kExtensionsOffset)); |
| 488 | movq(Operand(kScratchRegister, kExtensionsOffset), Immediate(0)); |
| 489 | Integer32ToSmi(scratch, scratch); |
| 490 | push(scratch); |
| 491 | // Push next and limit pointers which will be wordsize aligned and |
| 492 | // hence automatically smi tagged. |
| 493 | push(Operand(kScratchRegister, kNextOffset)); |
| 494 | push(Operand(kScratchRegister, kLimitOffset)); |
| 495 | } |
| 496 | |
| 497 | |
| 498 | Object* MacroAssembler::PopHandleScopeHelper(Register saved, |
| 499 | Register scratch, |
| 500 | bool gc_allowed) { |
| 501 | ExternalReference extensions_address = |
| 502 | ExternalReference::handle_scope_extensions_address(); |
| 503 | const int kExtensionsOffset = 0; |
| 504 | const int kNextOffset = Offset( |
| 505 | ExternalReference::handle_scope_next_address(), |
| 506 | extensions_address); |
| 507 | const int kLimitOffset = Offset( |
| 508 | ExternalReference::handle_scope_limit_address(), |
| 509 | extensions_address); |
| 510 | |
| 511 | Object* result = NULL; |
| 512 | Label write_back; |
| 513 | movq(kScratchRegister, extensions_address); |
| 514 | cmpq(Operand(kScratchRegister, kExtensionsOffset), Immediate(0)); |
| 515 | j(equal, &write_back); |
| 516 | push(saved); |
| 517 | if (gc_allowed) { |
| 518 | CallRuntime(Runtime::kDeleteHandleScopeExtensions, 0); |
| 519 | } else { |
| 520 | result = TryCallRuntime(Runtime::kDeleteHandleScopeExtensions, 0); |
| 521 | if (result->IsFailure()) return result; |
| 522 | } |
| 523 | pop(saved); |
| 524 | movq(kScratchRegister, extensions_address); |
| 525 | |
| 526 | bind(&write_back); |
| 527 | pop(Operand(kScratchRegister, kLimitOffset)); |
| 528 | pop(Operand(kScratchRegister, kNextOffset)); |
| 529 | pop(scratch); |
| 530 | SmiToInteger32(scratch, scratch); |
| 531 | movq(Operand(kScratchRegister, kExtensionsOffset), scratch); |
| 532 | |
| 533 | return result; |
| 534 | } |
| 535 | |
| 536 | |
| 537 | void MacroAssembler::PopHandleScope(Register saved, Register scratch) { |
| 538 | PopHandleScopeHelper(saved, scratch, true); |
| 539 | } |
| 540 | |
| 541 | |
| 542 | Object* MacroAssembler::TryPopHandleScope(Register saved, Register scratch) { |
| 543 | return PopHandleScopeHelper(saved, scratch, false); |
| 544 | } |
| 545 | |
| 546 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 547 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext, |
| 548 | int result_size) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 549 | // Set the entry point and jump to the C entry runtime stub. |
| 550 | movq(rbx, ext); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 551 | CEntryStub ces(result_size); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 552 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 553 | } |
| 554 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 555 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 556 | void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag) { |
| 557 | // Calls are not allowed in some stubs. |
| 558 | ASSERT(flag == JUMP_FUNCTION || allow_stub_calls()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 559 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 560 | // Rely on the assertion to check that the number of provided |
| 561 | // arguments match the expected number of arguments. Fake a |
| 562 | // parameter count to avoid emitting code to do the check. |
| 563 | ParameterCount expected(0); |
| 564 | GetBuiltinEntry(rdx, id); |
| 565 | InvokeCode(rdx, expected, expected, flag); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 566 | } |
| 567 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 568 | |
| 569 | void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 570 | ASSERT(!target.is(rdi)); |
| 571 | |
| 572 | // Load the builtins object into target register. |
| 573 | movq(target, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 574 | movq(target, FieldOperand(target, GlobalObject::kBuiltinsOffset)); |
| 575 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 576 | // Load the JavaScript builtin function from the builtins object. |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 577 | movq(rdi, FieldOperand(target, JSBuiltinsObject::OffsetOfFunctionWithId(id))); |
| 578 | |
| 579 | // Load the code entry point from the builtins object. |
| 580 | movq(target, FieldOperand(target, JSBuiltinsObject::OffsetOfCodeWithId(id))); |
| 581 | if (FLAG_debug_code) { |
| 582 | // Make sure the code objects in the builtins object and in the |
| 583 | // builtin function are the same. |
| 584 | push(target); |
vegorov@chromium.org | 26c16f8 | 2010-08-11 13:41:03 +0000 | [diff] [blame] | 585 | movq(target, FieldOperand(rdi, JSFunction::kCodeOffset)); |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 586 | cmpq(target, Operand(rsp, 0)); |
| 587 | Assert(equal, "Builtin code object changed"); |
| 588 | pop(target); |
| 589 | } |
| 590 | lea(target, FieldOperand(target, Code::kHeaderSize)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 594 | void MacroAssembler::Set(Register dst, int64_t x) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 595 | if (x == 0) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 596 | xorl(dst, dst); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 597 | } else if (is_int32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 598 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 599 | } else if (is_uint32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 600 | movl(dst, Immediate(static_cast<uint32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 601 | } else { |
| 602 | movq(dst, x, RelocInfo::NONE); |
| 603 | } |
| 604 | } |
| 605 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 606 | void MacroAssembler::Set(const Operand& dst, int64_t x) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 607 | if (is_int32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 608 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 609 | } else { |
| 610 | movq(kScratchRegister, x, RelocInfo::NONE); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 611 | movq(dst, kScratchRegister); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 612 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 613 | } |
| 614 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 615 | // ---------------------------------------------------------------------------- |
| 616 | // Smi tagging, untagging and tag detection. |
| 617 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 618 | static int kSmiShift = kSmiTagSize + kSmiShiftSize; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 619 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 620 | Register MacroAssembler::GetSmiConstant(Smi* source) { |
| 621 | int value = source->value(); |
| 622 | if (value == 0) { |
| 623 | xorl(kScratchRegister, kScratchRegister); |
| 624 | return kScratchRegister; |
| 625 | } |
| 626 | if (value == 1) { |
| 627 | return kSmiConstantRegister; |
| 628 | } |
| 629 | LoadSmiConstant(kScratchRegister, source); |
| 630 | return kScratchRegister; |
| 631 | } |
| 632 | |
| 633 | void MacroAssembler::LoadSmiConstant(Register dst, Smi* source) { |
| 634 | if (FLAG_debug_code) { |
| 635 | movq(dst, |
| 636 | reinterpret_cast<uint64_t>(Smi::FromInt(kSmiConstantRegisterValue)), |
| 637 | RelocInfo::NONE); |
| 638 | cmpq(dst, kSmiConstantRegister); |
| 639 | if (allow_stub_calls()) { |
| 640 | Assert(equal, "Uninitialized kSmiConstantRegister"); |
| 641 | } else { |
| 642 | Label ok; |
| 643 | j(equal, &ok); |
| 644 | int3(); |
| 645 | bind(&ok); |
| 646 | } |
| 647 | } |
| 648 | if (source->value() == 0) { |
| 649 | xorl(dst, dst); |
| 650 | return; |
| 651 | } |
| 652 | int value = source->value(); |
| 653 | bool negative = value < 0; |
| 654 | unsigned int uvalue = negative ? -value : value; |
| 655 | |
| 656 | switch (uvalue) { |
| 657 | case 9: |
| 658 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_8, 0)); |
| 659 | break; |
| 660 | case 8: |
| 661 | xorl(dst, dst); |
| 662 | lea(dst, Operand(dst, kSmiConstantRegister, times_8, 0)); |
| 663 | break; |
| 664 | case 4: |
| 665 | xorl(dst, dst); |
| 666 | lea(dst, Operand(dst, kSmiConstantRegister, times_4, 0)); |
| 667 | break; |
| 668 | case 5: |
| 669 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_4, 0)); |
| 670 | break; |
| 671 | case 3: |
| 672 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_2, 0)); |
| 673 | break; |
| 674 | case 2: |
| 675 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_1, 0)); |
| 676 | break; |
| 677 | case 1: |
| 678 | movq(dst, kSmiConstantRegister); |
| 679 | break; |
| 680 | case 0: |
| 681 | UNREACHABLE(); |
| 682 | return; |
| 683 | default: |
| 684 | movq(dst, reinterpret_cast<uint64_t>(source), RelocInfo::NONE); |
| 685 | return; |
| 686 | } |
| 687 | if (negative) { |
| 688 | neg(dst); |
| 689 | } |
| 690 | } |
| 691 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 692 | void MacroAssembler::Integer32ToSmi(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 693 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 694 | if (!dst.is(src)) { |
| 695 | movl(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 696 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 697 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | |
| 701 | void MacroAssembler::Integer32ToSmi(Register dst, |
| 702 | Register src, |
| 703 | Label* on_overflow) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 704 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 705 | // 32-bit integer always fits in a long smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 706 | if (!dst.is(src)) { |
| 707 | movl(dst, src); |
| 708 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 709 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 710 | } |
| 711 | |
| 712 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 713 | void MacroAssembler::Integer32ToSmiField(const Operand& dst, Register src) { |
| 714 | if (FLAG_debug_code) { |
| 715 | testb(dst, Immediate(0x01)); |
| 716 | Label ok; |
| 717 | j(zero, &ok); |
| 718 | if (allow_stub_calls()) { |
| 719 | Abort("Integer32ToSmiField writing to non-smi location"); |
| 720 | } else { |
| 721 | int3(); |
| 722 | } |
| 723 | bind(&ok); |
| 724 | } |
| 725 | ASSERT(kSmiShift % kBitsPerByte == 0); |
| 726 | movl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 727 | } |
| 728 | |
| 729 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 730 | void MacroAssembler::Integer64PlusConstantToSmi(Register dst, |
| 731 | Register src, |
| 732 | int constant) { |
| 733 | if (dst.is(src)) { |
| 734 | addq(dst, Immediate(constant)); |
| 735 | } else { |
| 736 | lea(dst, Operand(src, constant)); |
| 737 | } |
| 738 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | |
| 742 | void MacroAssembler::SmiToInteger32(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 743 | ASSERT_EQ(0, kSmiTag); |
| 744 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 745 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 746 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 747 | shr(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 751 | void MacroAssembler::SmiToInteger32(Register dst, const Operand& src) { |
| 752 | movl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 753 | } |
| 754 | |
| 755 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 756 | void MacroAssembler::SmiToInteger64(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 757 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 758 | if (!dst.is(src)) { |
| 759 | movq(dst, src); |
| 760 | } |
| 761 | sar(dst, Immediate(kSmiShift)); |
| 762 | } |
| 763 | |
| 764 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 765 | void MacroAssembler::SmiToInteger64(Register dst, const Operand& src) { |
| 766 | movsxlq(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 767 | } |
| 768 | |
| 769 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 770 | void MacroAssembler::SmiTest(Register src) { |
| 771 | testq(src, src); |
| 772 | } |
| 773 | |
| 774 | |
| 775 | void MacroAssembler::SmiCompare(Register dst, Register src) { |
| 776 | cmpq(dst, src); |
| 777 | } |
| 778 | |
| 779 | |
| 780 | void MacroAssembler::SmiCompare(Register dst, Smi* src) { |
| 781 | ASSERT(!dst.is(kScratchRegister)); |
| 782 | if (src->value() == 0) { |
| 783 | testq(dst, dst); |
| 784 | } else { |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 785 | Register constant_reg = GetSmiConstant(src); |
| 786 | cmpq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 787 | } |
| 788 | } |
| 789 | |
| 790 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 791 | void MacroAssembler::SmiCompare(Register dst, const Operand& src) { |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 792 | cmpq(dst, src); |
| 793 | } |
| 794 | |
| 795 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 796 | void MacroAssembler::SmiCompare(const Operand& dst, Register src) { |
| 797 | cmpq(dst, src); |
| 798 | } |
| 799 | |
| 800 | |
| 801 | void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 802 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value())); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 806 | void MacroAssembler::SmiCompareInteger32(const Operand& dst, Register src) { |
| 807 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 808 | } |
| 809 | |
| 810 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 811 | void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst, |
| 812 | Register src, |
| 813 | int power) { |
| 814 | ASSERT(power >= 0); |
| 815 | ASSERT(power < 64); |
| 816 | if (power == 0) { |
| 817 | SmiToInteger64(dst, src); |
| 818 | return; |
| 819 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 820 | if (!dst.is(src)) { |
| 821 | movq(dst, src); |
| 822 | } |
| 823 | if (power < kSmiShift) { |
| 824 | sar(dst, Immediate(kSmiShift - power)); |
| 825 | } else if (power > kSmiShift) { |
| 826 | shl(dst, Immediate(power - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 827 | } |
| 828 | } |
| 829 | |
| 830 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 831 | void MacroAssembler::PositiveSmiDivPowerOfTwoToInteger32(Register dst, |
| 832 | Register src, |
| 833 | int power) { |
| 834 | ASSERT((0 <= power) && (power < 32)); |
| 835 | if (dst.is(src)) { |
| 836 | shr(dst, Immediate(power + kSmiShift)); |
| 837 | } else { |
| 838 | UNIMPLEMENTED(); // Not used. |
| 839 | } |
| 840 | } |
| 841 | |
| 842 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 843 | Condition MacroAssembler::CheckSmi(Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 844 | ASSERT_EQ(0, kSmiTag); |
| 845 | testb(src, Immediate(kSmiTagMask)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 846 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | |
| 850 | Condition MacroAssembler::CheckPositiveSmi(Register src) { |
| 851 | ASSERT_EQ(0, kSmiTag); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 852 | // Make mask 0x8000000000000001 and test that both bits are zero. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 853 | movq(kScratchRegister, src); |
| 854 | rol(kScratchRegister, Immediate(1)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 855 | testb(kScratchRegister, Immediate(3)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 856 | return zero; |
| 857 | } |
| 858 | |
| 859 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 860 | Condition MacroAssembler::CheckBothSmi(Register first, Register second) { |
| 861 | if (first.is(second)) { |
| 862 | return CheckSmi(first); |
| 863 | } |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 864 | ASSERT(kSmiTag == 0 && kHeapObjectTag == 1 && kHeapObjectTagMask == 3); |
| 865 | leal(kScratchRegister, Operand(first, second, times_1, 0)); |
| 866 | testb(kScratchRegister, Immediate(0x03)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 867 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 868 | } |
| 869 | |
| 870 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 871 | Condition MacroAssembler::CheckBothPositiveSmi(Register first, |
| 872 | Register second) { |
| 873 | if (first.is(second)) { |
| 874 | return CheckPositiveSmi(first); |
| 875 | } |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 876 | movq(kScratchRegister, first); |
| 877 | or_(kScratchRegister, second); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 878 | rol(kScratchRegister, Immediate(1)); |
| 879 | testl(kScratchRegister, Immediate(0x03)); |
| 880 | return zero; |
| 881 | } |
| 882 | |
| 883 | |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 884 | Condition MacroAssembler::CheckEitherSmi(Register first, |
| 885 | Register second, |
| 886 | Register scratch) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 887 | if (first.is(second)) { |
| 888 | return CheckSmi(first); |
| 889 | } |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 890 | if (scratch.is(second)) { |
| 891 | andl(scratch, first); |
| 892 | } else { |
| 893 | if (!scratch.is(first)) { |
| 894 | movl(scratch, first); |
| 895 | } |
| 896 | andl(scratch, second); |
| 897 | } |
| 898 | testb(scratch, Immediate(kSmiTagMask)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 899 | return zero; |
| 900 | } |
| 901 | |
| 902 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 903 | Condition MacroAssembler::CheckIsMinSmi(Register src) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 904 | ASSERT(!src.is(kScratchRegister)); |
| 905 | // If we overflow by subtracting one, it's the minimal smi value. |
| 906 | cmpq(src, kSmiConstantRegister); |
| 907 | return overflow; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 908 | } |
| 909 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 910 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 911 | Condition MacroAssembler::CheckInteger32ValidSmiValue(Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 912 | // A 32-bit integer value can always be converted to a smi. |
| 913 | return always; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 917 | Condition MacroAssembler::CheckUInteger32ValidSmiValue(Register src) { |
| 918 | // An unsigned 32-bit integer value is valid as long as the high bit |
| 919 | // is not set. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 920 | testl(src, src); |
| 921 | return positive; |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 922 | } |
| 923 | |
| 924 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 925 | void MacroAssembler::SmiNeg(Register dst, Register src, Label* on_smi_result) { |
| 926 | if (dst.is(src)) { |
| 927 | ASSERT(!dst.is(kScratchRegister)); |
| 928 | movq(kScratchRegister, src); |
| 929 | neg(dst); // Low 32 bits are retained as zero by negation. |
| 930 | // Test if result is zero or Smi::kMinValue. |
| 931 | cmpq(dst, kScratchRegister); |
| 932 | j(not_equal, on_smi_result); |
| 933 | movq(src, kScratchRegister); |
| 934 | } else { |
| 935 | movq(dst, src); |
| 936 | neg(dst); |
| 937 | cmpq(dst, src); |
| 938 | // If the result is zero or Smi::kMinValue, negation failed to create a smi. |
| 939 | j(not_equal, on_smi_result); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 940 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | |
| 944 | void MacroAssembler::SmiAdd(Register dst, |
| 945 | Register src1, |
| 946 | Register src2, |
| 947 | Label* on_not_smi_result) { |
| 948 | ASSERT(!dst.is(src2)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 949 | if (on_not_smi_result == NULL) { |
| 950 | // No overflow checking. Use only when it's known that |
| 951 | // overflowing is impossible. |
| 952 | if (dst.is(src1)) { |
| 953 | addq(dst, src2); |
| 954 | } else { |
| 955 | movq(dst, src1); |
| 956 | addq(dst, src2); |
| 957 | } |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 958 | Assert(no_overflow, "Smi addition overflow"); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 959 | } else if (dst.is(src1)) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 960 | movq(kScratchRegister, src1); |
| 961 | addq(kScratchRegister, src2); |
| 962 | j(overflow, on_not_smi_result); |
| 963 | movq(dst, kScratchRegister); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 964 | } else { |
| 965 | movq(dst, src1); |
| 966 | addq(dst, src2); |
| 967 | j(overflow, on_not_smi_result); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 968 | } |
| 969 | } |
| 970 | |
| 971 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 972 | void MacroAssembler::SmiSub(Register dst, |
| 973 | Register src1, |
| 974 | Register src2, |
| 975 | Label* on_not_smi_result) { |
| 976 | ASSERT(!dst.is(src2)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 977 | if (on_not_smi_result == NULL) { |
| 978 | // No overflow checking. Use only when it's known that |
| 979 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 980 | if (dst.is(src1)) { |
| 981 | subq(dst, src2); |
| 982 | } else { |
| 983 | movq(dst, src1); |
| 984 | subq(dst, src2); |
| 985 | } |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 986 | Assert(no_overflow, "Smi subtraction overflow"); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 987 | } else if (dst.is(src1)) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 988 | cmpq(dst, src2); |
| 989 | j(overflow, on_not_smi_result); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 990 | subq(dst, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 991 | } else { |
| 992 | movq(dst, src1); |
| 993 | subq(dst, src2); |
| 994 | j(overflow, on_not_smi_result); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 995 | } |
| 996 | } |
| 997 | |
| 998 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 999 | void MacroAssembler::SmiSub(Register dst, |
| 1000 | Register src1, |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1001 | const Operand& src2, |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1002 | Label* on_not_smi_result) { |
| 1003 | if (on_not_smi_result == NULL) { |
| 1004 | // No overflow checking. Use only when it's known that |
| 1005 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1006 | if (dst.is(src1)) { |
| 1007 | subq(dst, src2); |
| 1008 | } else { |
| 1009 | movq(dst, src1); |
| 1010 | subq(dst, src2); |
| 1011 | } |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1012 | Assert(no_overflow, "Smi subtraction overflow"); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1013 | } else if (dst.is(src1)) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1014 | movq(kScratchRegister, src2); |
| 1015 | cmpq(src1, kScratchRegister); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1016 | j(overflow, on_not_smi_result); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1017 | subq(src1, kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1018 | } else { |
| 1019 | movq(dst, src1); |
| 1020 | subq(dst, src2); |
| 1021 | j(overflow, on_not_smi_result); |
| 1022 | } |
| 1023 | } |
| 1024 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1025 | void MacroAssembler::SmiMul(Register dst, |
| 1026 | Register src1, |
| 1027 | Register src2, |
| 1028 | Label* on_not_smi_result) { |
| 1029 | ASSERT(!dst.is(src2)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1030 | ASSERT(!dst.is(kScratchRegister)); |
| 1031 | ASSERT(!src1.is(kScratchRegister)); |
| 1032 | ASSERT(!src2.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1033 | |
| 1034 | if (dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1035 | Label failure, zero_correct_result; |
| 1036 | movq(kScratchRegister, src1); // Create backup for later testing. |
| 1037 | SmiToInteger64(dst, src1); |
| 1038 | imul(dst, src2); |
| 1039 | j(overflow, &failure); |
| 1040 | |
| 1041 | // Check for negative zero result. If product is zero, and one |
| 1042 | // argument is negative, go to slow case. |
| 1043 | Label correct_result; |
| 1044 | testq(dst, dst); |
| 1045 | j(not_zero, &correct_result); |
| 1046 | |
| 1047 | movq(dst, kScratchRegister); |
| 1048 | xor_(dst, src2); |
| 1049 | j(positive, &zero_correct_result); // Result was positive zero. |
| 1050 | |
| 1051 | bind(&failure); // Reused failure exit, restores src1. |
| 1052 | movq(src1, kScratchRegister); |
| 1053 | jmp(on_not_smi_result); |
| 1054 | |
| 1055 | bind(&zero_correct_result); |
| 1056 | xor_(dst, dst); |
| 1057 | |
| 1058 | bind(&correct_result); |
| 1059 | } else { |
| 1060 | SmiToInteger64(dst, src1); |
| 1061 | imul(dst, src2); |
| 1062 | j(overflow, on_not_smi_result); |
| 1063 | // Check for negative zero result. If product is zero, and one |
| 1064 | // argument is negative, go to slow case. |
| 1065 | Label correct_result; |
| 1066 | testq(dst, dst); |
| 1067 | j(not_zero, &correct_result); |
| 1068 | // One of src1 and src2 is zero, the check whether the other is |
| 1069 | // negative. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1070 | movq(kScratchRegister, src1); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1071 | xor_(kScratchRegister, src2); |
| 1072 | j(negative, on_not_smi_result); |
| 1073 | bind(&correct_result); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1074 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1075 | } |
| 1076 | |
| 1077 | |
| 1078 | void MacroAssembler::SmiTryAddConstant(Register dst, |
| 1079 | Register src, |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1080 | Smi* constant, |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1081 | Label* on_not_smi_result) { |
| 1082 | // Does not assume that src is a smi. |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1083 | ASSERT_EQ(static_cast<int>(1), static_cast<int>(kSmiTagMask)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1084 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1085 | ASSERT(!dst.is(kScratchRegister)); |
| 1086 | ASSERT(!src.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1087 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1088 | JumpIfNotSmi(src, on_not_smi_result); |
| 1089 | Register tmp = (dst.is(src) ? kScratchRegister : dst); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1090 | LoadSmiConstant(tmp, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1091 | addq(tmp, src); |
| 1092 | j(overflow, on_not_smi_result); |
| 1093 | if (dst.is(src)) { |
| 1094 | movq(dst, tmp); |
| 1095 | } |
| 1096 | } |
| 1097 | |
| 1098 | |
| 1099 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) { |
| 1100 | if (constant->value() == 0) { |
| 1101 | if (!dst.is(src)) { |
| 1102 | movq(dst, src); |
| 1103 | } |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1104 | return; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1105 | } else if (dst.is(src)) { |
| 1106 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1107 | switch (constant->value()) { |
| 1108 | case 1: |
| 1109 | addq(dst, kSmiConstantRegister); |
| 1110 | return; |
| 1111 | case 2: |
| 1112 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 1113 | return; |
| 1114 | case 4: |
| 1115 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 1116 | return; |
| 1117 | case 8: |
| 1118 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 1119 | return; |
| 1120 | default: |
| 1121 | Register constant_reg = GetSmiConstant(constant); |
| 1122 | addq(dst, constant_reg); |
| 1123 | return; |
| 1124 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1125 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1126 | switch (constant->value()) { |
| 1127 | case 1: |
| 1128 | lea(dst, Operand(src, kSmiConstantRegister, times_1, 0)); |
| 1129 | return; |
| 1130 | case 2: |
| 1131 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 1132 | return; |
| 1133 | case 4: |
| 1134 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 1135 | return; |
| 1136 | case 8: |
| 1137 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 1138 | return; |
| 1139 | default: |
| 1140 | LoadSmiConstant(dst, constant); |
| 1141 | addq(dst, src); |
| 1142 | return; |
| 1143 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1144 | } |
| 1145 | } |
| 1146 | |
| 1147 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1148 | void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) { |
| 1149 | if (constant->value() != 0) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1150 | addl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(constant->value())); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1155 | void MacroAssembler::SmiAddConstant(Register dst, |
| 1156 | Register src, |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1157 | Smi* constant, |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1158 | Label* on_not_smi_result) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1159 | if (constant->value() == 0) { |
| 1160 | if (!dst.is(src)) { |
| 1161 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1162 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1163 | } else if (dst.is(src)) { |
| 1164 | ASSERT(!dst.is(kScratchRegister)); |
| 1165 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1166 | LoadSmiConstant(kScratchRegister, constant); |
| 1167 | addq(kScratchRegister, src); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1168 | j(overflow, on_not_smi_result); |
| 1169 | movq(dst, kScratchRegister); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1170 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1171 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1172 | addq(dst, src); |
| 1173 | j(overflow, on_not_smi_result); |
| 1174 | } |
| 1175 | } |
| 1176 | |
| 1177 | |
| 1178 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant) { |
| 1179 | if (constant->value() == 0) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1180 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1181 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1182 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1183 | } else if (dst.is(src)) { |
| 1184 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1185 | Register constant_reg = GetSmiConstant(constant); |
| 1186 | subq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1187 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1188 | if (constant->value() == Smi::kMinValue) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1189 | LoadSmiConstant(dst, constant); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1190 | // Adding and subtracting the min-value gives the same result, it only |
| 1191 | // differs on the overflow bit, which we don't check here. |
| 1192 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1193 | } else { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1194 | // Subtract by adding the negation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1195 | LoadSmiConstant(dst, Smi::FromInt(-constant->value())); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1196 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1197 | } |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | |
| 1202 | void MacroAssembler::SmiSubConstant(Register dst, |
| 1203 | Register src, |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1204 | Smi* constant, |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1205 | Label* on_not_smi_result) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1206 | if (constant->value() == 0) { |
| 1207 | if (!dst.is(src)) { |
| 1208 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1209 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1210 | } else if (dst.is(src)) { |
| 1211 | ASSERT(!dst.is(kScratchRegister)); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1212 | if (constant->value() == Smi::kMinValue) { |
| 1213 | // Subtracting min-value from any non-negative value will overflow. |
| 1214 | // We test the non-negativeness before doing the subtraction. |
| 1215 | testq(src, src); |
| 1216 | j(not_sign, on_not_smi_result); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1217 | LoadSmiConstant(kScratchRegister, constant); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1218 | subq(dst, kScratchRegister); |
| 1219 | } else { |
| 1220 | // Subtract by adding the negation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1221 | LoadSmiConstant(kScratchRegister, Smi::FromInt(-constant->value())); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1222 | addq(kScratchRegister, dst); |
| 1223 | j(overflow, on_not_smi_result); |
| 1224 | movq(dst, kScratchRegister); |
| 1225 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1226 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1227 | if (constant->value() == Smi::kMinValue) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1228 | // Subtracting min-value from any non-negative value will overflow. |
| 1229 | // We test the non-negativeness before doing the subtraction. |
| 1230 | testq(src, src); |
| 1231 | j(not_sign, on_not_smi_result); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1232 | LoadSmiConstant(dst, constant); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1233 | // Adding and subtracting the min-value gives the same result, it only |
| 1234 | // differs on the overflow bit, which we don't check here. |
| 1235 | addq(dst, src); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1236 | } else { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1237 | // Subtract by adding the negation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1238 | LoadSmiConstant(dst, Smi::FromInt(-(constant->value()))); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1239 | addq(dst, src); |
| 1240 | j(overflow, on_not_smi_result); |
| 1241 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1242 | } |
| 1243 | } |
| 1244 | |
| 1245 | |
| 1246 | void MacroAssembler::SmiDiv(Register dst, |
| 1247 | Register src1, |
| 1248 | Register src2, |
| 1249 | Label* on_not_smi_result) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1250 | ASSERT(!src1.is(kScratchRegister)); |
| 1251 | ASSERT(!src2.is(kScratchRegister)); |
| 1252 | ASSERT(!dst.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1253 | ASSERT(!src2.is(rax)); |
| 1254 | ASSERT(!src2.is(rdx)); |
| 1255 | ASSERT(!src1.is(rdx)); |
| 1256 | |
| 1257 | // Check for 0 divisor (result is +/-Infinity). |
| 1258 | Label positive_divisor; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1259 | testq(src2, src2); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1260 | j(zero, on_not_smi_result); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1261 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1262 | if (src1.is(rax)) { |
| 1263 | movq(kScratchRegister, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1264 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1265 | SmiToInteger32(rax, src1); |
| 1266 | // We need to rule out dividing Smi::kMinValue by -1, since that would |
| 1267 | // overflow in idiv and raise an exception. |
| 1268 | // We combine this with negative zero test (negative zero only happens |
| 1269 | // when dividing zero by a negative number). |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1270 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1271 | // We overshoot a little and go to slow case if we divide min-value |
| 1272 | // by any negative value, not just -1. |
| 1273 | Label safe_div; |
| 1274 | testl(rax, Immediate(0x7fffffff)); |
| 1275 | j(not_zero, &safe_div); |
| 1276 | testq(src2, src2); |
| 1277 | if (src1.is(rax)) { |
| 1278 | j(positive, &safe_div); |
| 1279 | movq(src1, kScratchRegister); |
| 1280 | jmp(on_not_smi_result); |
| 1281 | } else { |
| 1282 | j(negative, on_not_smi_result); |
| 1283 | } |
| 1284 | bind(&safe_div); |
| 1285 | |
| 1286 | SmiToInteger32(src2, src2); |
| 1287 | // Sign extend src1 into edx:eax. |
| 1288 | cdq(); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1289 | idivl(src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1290 | Integer32ToSmi(src2, src2); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1291 | // Check that the remainder is zero. |
| 1292 | testl(rdx, rdx); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1293 | if (src1.is(rax)) { |
| 1294 | Label smi_result; |
| 1295 | j(zero, &smi_result); |
| 1296 | movq(src1, kScratchRegister); |
| 1297 | jmp(on_not_smi_result); |
| 1298 | bind(&smi_result); |
| 1299 | } else { |
| 1300 | j(not_zero, on_not_smi_result); |
| 1301 | } |
| 1302 | if (!dst.is(src1) && src1.is(rax)) { |
| 1303 | movq(src1, kScratchRegister); |
| 1304 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1305 | Integer32ToSmi(dst, rax); |
| 1306 | } |
| 1307 | |
| 1308 | |
| 1309 | void MacroAssembler::SmiMod(Register dst, |
| 1310 | Register src1, |
| 1311 | Register src2, |
| 1312 | Label* on_not_smi_result) { |
| 1313 | ASSERT(!dst.is(kScratchRegister)); |
| 1314 | ASSERT(!src1.is(kScratchRegister)); |
| 1315 | ASSERT(!src2.is(kScratchRegister)); |
| 1316 | ASSERT(!src2.is(rax)); |
| 1317 | ASSERT(!src2.is(rdx)); |
| 1318 | ASSERT(!src1.is(rdx)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1319 | ASSERT(!src1.is(src2)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1320 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1321 | testq(src2, src2); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1322 | j(zero, on_not_smi_result); |
| 1323 | |
| 1324 | if (src1.is(rax)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1325 | movq(kScratchRegister, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1326 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1327 | SmiToInteger32(rax, src1); |
| 1328 | SmiToInteger32(src2, src2); |
| 1329 | |
| 1330 | // Test for the edge case of dividing Smi::kMinValue by -1 (will overflow). |
| 1331 | Label safe_div; |
| 1332 | cmpl(rax, Immediate(Smi::kMinValue)); |
| 1333 | j(not_equal, &safe_div); |
| 1334 | cmpl(src2, Immediate(-1)); |
| 1335 | j(not_equal, &safe_div); |
| 1336 | // Retag inputs and go slow case. |
| 1337 | Integer32ToSmi(src2, src2); |
| 1338 | if (src1.is(rax)) { |
| 1339 | movq(src1, kScratchRegister); |
| 1340 | } |
| 1341 | jmp(on_not_smi_result); |
| 1342 | bind(&safe_div); |
| 1343 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1344 | // Sign extend eax into edx:eax. |
| 1345 | cdq(); |
| 1346 | idivl(src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1347 | // Restore smi tags on inputs. |
| 1348 | Integer32ToSmi(src2, src2); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1349 | if (src1.is(rax)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1350 | movq(src1, kScratchRegister); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1351 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1352 | // Check for a negative zero result. If the result is zero, and the |
| 1353 | // dividend is negative, go slow to return a floating point negative zero. |
| 1354 | Label smi_result; |
| 1355 | testl(rdx, rdx); |
| 1356 | j(not_zero, &smi_result); |
| 1357 | testq(src1, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1358 | j(negative, on_not_smi_result); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1359 | bind(&smi_result); |
| 1360 | Integer32ToSmi(dst, rdx); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1361 | } |
| 1362 | |
| 1363 | |
| 1364 | void MacroAssembler::SmiNot(Register dst, Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1365 | ASSERT(!dst.is(kScratchRegister)); |
| 1366 | ASSERT(!src.is(kScratchRegister)); |
| 1367 | // Set tag and padding bits before negating, so that they are zero afterwards. |
| 1368 | movl(kScratchRegister, Immediate(~0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1369 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1370 | xor_(dst, kScratchRegister); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1371 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1372 | lea(dst, Operand(src, kScratchRegister, times_1, 0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1373 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1374 | not_(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1375 | } |
| 1376 | |
| 1377 | |
| 1378 | void MacroAssembler::SmiAnd(Register dst, Register src1, Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1379 | ASSERT(!dst.is(src2)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1380 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1381 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1382 | } |
| 1383 | and_(dst, src2); |
| 1384 | } |
| 1385 | |
| 1386 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1387 | void MacroAssembler::SmiAndConstant(Register dst, Register src, Smi* constant) { |
| 1388 | if (constant->value() == 0) { |
| 1389 | xor_(dst, dst); |
| 1390 | } else if (dst.is(src)) { |
| 1391 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1392 | Register constant_reg = GetSmiConstant(constant); |
| 1393 | and_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1394 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1395 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1396 | and_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1397 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1398 | } |
| 1399 | |
| 1400 | |
| 1401 | void MacroAssembler::SmiOr(Register dst, Register src1, Register src2) { |
| 1402 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1403 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1404 | } |
| 1405 | or_(dst, src2); |
| 1406 | } |
| 1407 | |
| 1408 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1409 | void MacroAssembler::SmiOrConstant(Register dst, Register src, Smi* constant) { |
| 1410 | if (dst.is(src)) { |
| 1411 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1412 | Register constant_reg = GetSmiConstant(constant); |
| 1413 | or_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1414 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1415 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1416 | or_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1417 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1418 | } |
| 1419 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1420 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1421 | void MacroAssembler::SmiXor(Register dst, Register src1, Register src2) { |
| 1422 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1423 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1424 | } |
| 1425 | xor_(dst, src2); |
| 1426 | } |
| 1427 | |
| 1428 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1429 | void MacroAssembler::SmiXorConstant(Register dst, Register src, Smi* constant) { |
| 1430 | if (dst.is(src)) { |
| 1431 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1432 | Register constant_reg = GetSmiConstant(constant); |
| 1433 | xor_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1434 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1435 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1436 | xor_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1437 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1438 | } |
| 1439 | |
| 1440 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1441 | void MacroAssembler::SmiShiftArithmeticRightConstant(Register dst, |
| 1442 | Register src, |
| 1443 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1444 | ASSERT(is_uint5(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1445 | if (shift_value > 0) { |
| 1446 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1447 | sar(dst, Immediate(shift_value + kSmiShift)); |
| 1448 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1449 | } else { |
| 1450 | UNIMPLEMENTED(); // Not used. |
| 1451 | } |
| 1452 | } |
| 1453 | } |
| 1454 | |
| 1455 | |
| 1456 | void MacroAssembler::SmiShiftLogicalRightConstant(Register dst, |
| 1457 | Register src, |
| 1458 | int shift_value, |
| 1459 | Label* on_not_smi_result) { |
| 1460 | // Logic right shift interprets its result as an *unsigned* number. |
| 1461 | if (dst.is(src)) { |
| 1462 | UNIMPLEMENTED(); // Not used. |
| 1463 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1464 | movq(dst, src); |
| 1465 | if (shift_value == 0) { |
| 1466 | testq(dst, dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1467 | j(negative, on_not_smi_result); |
| 1468 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1469 | shr(dst, Immediate(shift_value + kSmiShift)); |
| 1470 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | |
| 1475 | void MacroAssembler::SmiShiftLeftConstant(Register dst, |
| 1476 | Register src, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1477 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1478 | if (!dst.is(src)) { |
| 1479 | movq(dst, src); |
| 1480 | } |
| 1481 | if (shift_value > 0) { |
| 1482 | shl(dst, Immediate(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1483 | } |
| 1484 | } |
| 1485 | |
| 1486 | |
| 1487 | void MacroAssembler::SmiShiftLeft(Register dst, |
| 1488 | Register src1, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1489 | Register src2) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1490 | ASSERT(!dst.is(rcx)); |
| 1491 | Label result_ok; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1492 | // Untag shift amount. |
| 1493 | if (!dst.is(src1)) { |
| 1494 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1495 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1496 | SmiToInteger32(rcx, src2); |
| 1497 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 1498 | and_(rcx, Immediate(0x1f)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1499 | shl_cl(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1500 | } |
| 1501 | |
| 1502 | |
| 1503 | void MacroAssembler::SmiShiftLogicalRight(Register dst, |
| 1504 | Register src1, |
| 1505 | Register src2, |
| 1506 | Label* on_not_smi_result) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1507 | ASSERT(!dst.is(kScratchRegister)); |
| 1508 | ASSERT(!src1.is(kScratchRegister)); |
| 1509 | ASSERT(!src2.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1510 | ASSERT(!dst.is(rcx)); |
| 1511 | Label result_ok; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1512 | if (src1.is(rcx) || src2.is(rcx)) { |
| 1513 | movq(kScratchRegister, rcx); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1514 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1515 | if (!dst.is(src1)) { |
| 1516 | movq(dst, src1); |
| 1517 | } |
| 1518 | SmiToInteger32(rcx, src2); |
| 1519 | orl(rcx, Immediate(kSmiShift)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1520 | shr_cl(dst); // Shift is rcx modulo 0x1f + 32. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1521 | shl(dst, Immediate(kSmiShift)); |
| 1522 | testq(dst, dst); |
| 1523 | if (src1.is(rcx) || src2.is(rcx)) { |
| 1524 | Label positive_result; |
| 1525 | j(positive, &positive_result); |
| 1526 | if (src1.is(rcx)) { |
| 1527 | movq(src1, kScratchRegister); |
| 1528 | } else { |
| 1529 | movq(src2, kScratchRegister); |
| 1530 | } |
| 1531 | jmp(on_not_smi_result); |
| 1532 | bind(&positive_result); |
| 1533 | } else { |
| 1534 | j(negative, on_not_smi_result); // src2 was zero and src1 negative. |
| 1535 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1536 | } |
| 1537 | |
| 1538 | |
| 1539 | void MacroAssembler::SmiShiftArithmeticRight(Register dst, |
| 1540 | Register src1, |
| 1541 | Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1542 | ASSERT(!dst.is(kScratchRegister)); |
| 1543 | ASSERT(!src1.is(kScratchRegister)); |
| 1544 | ASSERT(!src2.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1545 | ASSERT(!dst.is(rcx)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1546 | if (src1.is(rcx)) { |
| 1547 | movq(kScratchRegister, src1); |
| 1548 | } else if (src2.is(rcx)) { |
| 1549 | movq(kScratchRegister, src2); |
| 1550 | } |
| 1551 | if (!dst.is(src1)) { |
| 1552 | movq(dst, src1); |
| 1553 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1554 | SmiToInteger32(rcx, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1555 | orl(rcx, Immediate(kSmiShift)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1556 | sar_cl(dst); // Shift 32 + original rcx & 0x1f. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1557 | shl(dst, Immediate(kSmiShift)); |
| 1558 | if (src1.is(rcx)) { |
| 1559 | movq(src1, kScratchRegister); |
| 1560 | } else if (src2.is(rcx)) { |
| 1561 | movq(src2, kScratchRegister); |
| 1562 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1563 | } |
| 1564 | |
| 1565 | |
| 1566 | void MacroAssembler::SelectNonSmi(Register dst, |
| 1567 | Register src1, |
| 1568 | Register src2, |
| 1569 | Label* on_not_smis) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1570 | ASSERT(!dst.is(kScratchRegister)); |
| 1571 | ASSERT(!src1.is(kScratchRegister)); |
| 1572 | ASSERT(!src2.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1573 | ASSERT(!dst.is(src1)); |
| 1574 | ASSERT(!dst.is(src2)); |
| 1575 | // Both operands must not be smis. |
| 1576 | #ifdef DEBUG |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1577 | if (allow_stub_calls()) { // Check contains a stub call. |
| 1578 | Condition not_both_smis = NegateCondition(CheckBothSmi(src1, src2)); |
| 1579 | Check(not_both_smis, "Both registers were smis in SelectNonSmi."); |
| 1580 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1581 | #endif |
| 1582 | ASSERT_EQ(0, kSmiTag); |
| 1583 | ASSERT_EQ(0, Smi::FromInt(0)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1584 | movl(kScratchRegister, Immediate(kSmiTagMask)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1585 | and_(kScratchRegister, src1); |
| 1586 | testl(kScratchRegister, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1587 | // If non-zero then both are smis. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1588 | j(not_zero, on_not_smis); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1589 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1590 | // Exactly one operand is a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1591 | ASSERT_EQ(1, static_cast<int>(kSmiTagMask)); |
| 1592 | // kScratchRegister still holds src1 & kSmiTag, which is either zero or one. |
| 1593 | subq(kScratchRegister, Immediate(1)); |
| 1594 | // If src1 is a smi, then scratch register all 1s, else it is all 0s. |
| 1595 | movq(dst, src1); |
| 1596 | xor_(dst, src2); |
| 1597 | and_(dst, kScratchRegister); |
| 1598 | // If src1 is a smi, dst holds src1 ^ src2, else it is zero. |
| 1599 | xor_(dst, src1); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1600 | // If src1 is a smi, dst is src2, else it is src1, i.e., the non-smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1601 | } |
| 1602 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1603 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1604 | SmiIndex MacroAssembler::SmiToIndex(Register dst, |
| 1605 | Register src, |
| 1606 | int shift) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1607 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1608 | // There is a possible optimization if shift is in the range 60-63, but that |
| 1609 | // will (and must) never happen. |
| 1610 | if (!dst.is(src)) { |
| 1611 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1612 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1613 | if (shift < kSmiShift) { |
| 1614 | sar(dst, Immediate(kSmiShift - shift)); |
| 1615 | } else { |
| 1616 | shl(dst, Immediate(shift - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1617 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1618 | return SmiIndex(dst, times_1); |
| 1619 | } |
| 1620 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1621 | SmiIndex MacroAssembler::SmiToNegativeIndex(Register dst, |
| 1622 | Register src, |
| 1623 | int shift) { |
| 1624 | // Register src holds a positive smi. |
| 1625 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1626 | if (!dst.is(src)) { |
| 1627 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1628 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1629 | neg(dst); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1630 | if (shift < kSmiShift) { |
| 1631 | sar(dst, Immediate(kSmiShift - shift)); |
| 1632 | } else { |
| 1633 | shl(dst, Immediate(shift - kSmiShift)); |
| 1634 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1635 | return SmiIndex(dst, times_1); |
| 1636 | } |
| 1637 | |
| 1638 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1639 | void MacroAssembler::JumpIfSmi(Register src, Label* on_smi) { |
| 1640 | ASSERT_EQ(0, kSmiTag); |
| 1641 | Condition smi = CheckSmi(src); |
| 1642 | j(smi, on_smi); |
| 1643 | } |
| 1644 | |
| 1645 | |
| 1646 | void MacroAssembler::JumpIfNotSmi(Register src, Label* on_not_smi) { |
| 1647 | Condition smi = CheckSmi(src); |
| 1648 | j(NegateCondition(smi), on_not_smi); |
| 1649 | } |
| 1650 | |
| 1651 | |
| 1652 | void MacroAssembler::JumpIfNotPositiveSmi(Register src, |
| 1653 | Label* on_not_positive_smi) { |
| 1654 | Condition positive_smi = CheckPositiveSmi(src); |
| 1655 | j(NegateCondition(positive_smi), on_not_positive_smi); |
| 1656 | } |
| 1657 | |
| 1658 | |
| 1659 | void MacroAssembler::JumpIfSmiEqualsConstant(Register src, |
| 1660 | Smi* constant, |
| 1661 | Label* on_equals) { |
| 1662 | SmiCompare(src, constant); |
| 1663 | j(equal, on_equals); |
| 1664 | } |
| 1665 | |
| 1666 | |
| 1667 | void MacroAssembler::JumpIfNotValidSmiValue(Register src, Label* on_invalid) { |
| 1668 | Condition is_valid = CheckInteger32ValidSmiValue(src); |
| 1669 | j(NegateCondition(is_valid), on_invalid); |
| 1670 | } |
| 1671 | |
| 1672 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1673 | void MacroAssembler::JumpIfUIntNotValidSmiValue(Register src, |
| 1674 | Label* on_invalid) { |
| 1675 | Condition is_valid = CheckUInteger32ValidSmiValue(src); |
| 1676 | j(NegateCondition(is_valid), on_invalid); |
| 1677 | } |
| 1678 | |
| 1679 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1680 | void MacroAssembler::JumpIfNotBothSmi(Register src1, Register src2, |
| 1681 | Label* on_not_both_smi) { |
| 1682 | Condition both_smi = CheckBothSmi(src1, src2); |
| 1683 | j(NegateCondition(both_smi), on_not_both_smi); |
| 1684 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1685 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1686 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1687 | void MacroAssembler::JumpIfNotBothPositiveSmi(Register src1, Register src2, |
| 1688 | Label* on_not_both_smi) { |
| 1689 | Condition both_smi = CheckBothPositiveSmi(src1, src2); |
| 1690 | j(NegateCondition(both_smi), on_not_both_smi); |
| 1691 | } |
| 1692 | |
| 1693 | |
| 1694 | |
| 1695 | void MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register first_object, |
| 1696 | Register second_object, |
| 1697 | Register scratch1, |
| 1698 | Register scratch2, |
| 1699 | Label* on_fail) { |
| 1700 | // Check that both objects are not smis. |
| 1701 | Condition either_smi = CheckEitherSmi(first_object, second_object); |
| 1702 | j(either_smi, on_fail); |
| 1703 | |
| 1704 | // Load instance type for both strings. |
| 1705 | movq(scratch1, FieldOperand(first_object, HeapObject::kMapOffset)); |
| 1706 | movq(scratch2, FieldOperand(second_object, HeapObject::kMapOffset)); |
| 1707 | movzxbl(scratch1, FieldOperand(scratch1, Map::kInstanceTypeOffset)); |
| 1708 | movzxbl(scratch2, FieldOperand(scratch2, Map::kInstanceTypeOffset)); |
| 1709 | |
| 1710 | // Check that both are flat ascii strings. |
| 1711 | ASSERT(kNotStringTag != 0); |
| 1712 | const int kFlatAsciiStringMask = |
| 1713 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 1714 | const int kFlatAsciiStringTag = ASCII_STRING_TYPE; |
| 1715 | |
| 1716 | andl(scratch1, Immediate(kFlatAsciiStringMask)); |
| 1717 | andl(scratch2, Immediate(kFlatAsciiStringMask)); |
| 1718 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
| 1719 | ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3)); |
| 1720 | lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
| 1721 | cmpl(scratch1, |
| 1722 | Immediate(kFlatAsciiStringTag + (kFlatAsciiStringTag << 3))); |
| 1723 | j(not_equal, on_fail); |
| 1724 | } |
| 1725 | |
| 1726 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1727 | void MacroAssembler::JumpIfInstanceTypeIsNotSequentialAscii( |
| 1728 | Register instance_type, |
| 1729 | Register scratch, |
| 1730 | Label *failure) { |
| 1731 | if (!scratch.is(instance_type)) { |
| 1732 | movl(scratch, instance_type); |
| 1733 | } |
| 1734 | |
| 1735 | const int kFlatAsciiStringMask = |
| 1736 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 1737 | |
| 1738 | andl(scratch, Immediate(kFlatAsciiStringMask)); |
| 1739 | cmpl(scratch, Immediate(kStringTag | kSeqStringTag | kAsciiStringTag)); |
| 1740 | j(not_equal, failure); |
| 1741 | } |
| 1742 | |
| 1743 | |
| 1744 | void MacroAssembler::JumpIfBothInstanceTypesAreNotSequentialAscii( |
| 1745 | Register first_object_instance_type, |
| 1746 | Register second_object_instance_type, |
| 1747 | Register scratch1, |
| 1748 | Register scratch2, |
| 1749 | Label* on_fail) { |
| 1750 | // Load instance type for both strings. |
| 1751 | movq(scratch1, first_object_instance_type); |
| 1752 | movq(scratch2, second_object_instance_type); |
| 1753 | |
| 1754 | // Check that both are flat ascii strings. |
| 1755 | ASSERT(kNotStringTag != 0); |
| 1756 | const int kFlatAsciiStringMask = |
| 1757 | kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask; |
| 1758 | const int kFlatAsciiStringTag = ASCII_STRING_TYPE; |
| 1759 | |
| 1760 | andl(scratch1, Immediate(kFlatAsciiStringMask)); |
| 1761 | andl(scratch2, Immediate(kFlatAsciiStringMask)); |
| 1762 | // Interleave the bits to check both scratch1 and scratch2 in one test. |
| 1763 | ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3)); |
| 1764 | lea(scratch1, Operand(scratch1, scratch2, times_8, 0)); |
| 1765 | cmpl(scratch1, |
| 1766 | Immediate(kFlatAsciiStringTag + (kFlatAsciiStringTag << 3))); |
| 1767 | j(not_equal, on_fail); |
| 1768 | } |
| 1769 | |
| 1770 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1771 | void MacroAssembler::Move(Register dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1772 | ASSERT(!source->IsFailure()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1773 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1774 | Move(dst, Smi::cast(*source)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1775 | } else { |
| 1776 | movq(dst, source, RelocInfo::EMBEDDED_OBJECT); |
| 1777 | } |
| 1778 | } |
| 1779 | |
| 1780 | |
| 1781 | void MacroAssembler::Move(const Operand& dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1782 | ASSERT(!source->IsFailure()); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1783 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1784 | Move(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1785 | } else { |
| 1786 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1787 | movq(dst, kScratchRegister); |
| 1788 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1789 | } |
| 1790 | |
| 1791 | |
| 1792 | void MacroAssembler::Cmp(Register dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1793 | if (source->IsSmi()) { |
| 1794 | SmiCompare(dst, Smi::cast(*source)); |
| 1795 | } else { |
| 1796 | Move(kScratchRegister, source); |
| 1797 | cmpq(dst, kScratchRegister); |
| 1798 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1799 | } |
| 1800 | |
| 1801 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1802 | void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1803 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1804 | SmiCompare(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1805 | } else { |
| 1806 | ASSERT(source->IsHeapObject()); |
| 1807 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1808 | cmpq(dst, kScratchRegister); |
| 1809 | } |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1810 | } |
| 1811 | |
| 1812 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1813 | void MacroAssembler::Push(Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1814 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1815 | Push(Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1816 | } else { |
| 1817 | ASSERT(source->IsHeapObject()); |
| 1818 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1819 | push(kScratchRegister); |
| 1820 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1821 | } |
| 1822 | |
| 1823 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1824 | void MacroAssembler::Push(Smi* source) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1825 | intptr_t smi = reinterpret_cast<intptr_t>(source); |
| 1826 | if (is_int32(smi)) { |
| 1827 | push(Immediate(static_cast<int32_t>(smi))); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1828 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1829 | Register constant = GetSmiConstant(source); |
| 1830 | push(constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1831 | } |
| 1832 | } |
| 1833 | |
| 1834 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 1835 | void MacroAssembler::Drop(int stack_elements) { |
| 1836 | if (stack_elements > 0) { |
| 1837 | addq(rsp, Immediate(stack_elements * kPointerSize)); |
| 1838 | } |
| 1839 | } |
| 1840 | |
| 1841 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1842 | void MacroAssembler::Test(const Operand& src, Smi* source) { |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 1843 | testl(Operand(src, kIntSize), Immediate(source->value())); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1844 | } |
| 1845 | |
| 1846 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1847 | void MacroAssembler::Jump(ExternalReference ext) { |
| 1848 | movq(kScratchRegister, ext); |
| 1849 | jmp(kScratchRegister); |
| 1850 | } |
| 1851 | |
| 1852 | |
| 1853 | void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) { |
| 1854 | movq(kScratchRegister, destination, rmode); |
| 1855 | jmp(kScratchRegister); |
| 1856 | } |
| 1857 | |
| 1858 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1859 | void MacroAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode) { |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1860 | // TODO(X64): Inline this |
| 1861 | jmp(code_object, rmode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1862 | } |
| 1863 | |
| 1864 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1865 | void MacroAssembler::Call(ExternalReference ext) { |
| 1866 | movq(kScratchRegister, ext); |
| 1867 | call(kScratchRegister); |
| 1868 | } |
| 1869 | |
| 1870 | |
| 1871 | void MacroAssembler::Call(Address destination, RelocInfo::Mode rmode) { |
| 1872 | movq(kScratchRegister, destination, rmode); |
| 1873 | call(kScratchRegister); |
| 1874 | } |
| 1875 | |
| 1876 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1877 | void MacroAssembler::Call(Handle<Code> code_object, RelocInfo::Mode rmode) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1878 | ASSERT(RelocInfo::IsCodeTarget(rmode)); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1879 | WriteRecordedPositions(); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1880 | call(code_object, rmode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1881 | } |
| 1882 | |
| 1883 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1884 | void MacroAssembler::PushTryHandler(CodeLocation try_location, |
| 1885 | HandlerType type) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1886 | // Adjust this code if not the case. |
| 1887 | ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); |
| 1888 | |
| 1889 | // The pc (return address) is already on TOS. This code pushes state, |
| 1890 | // frame pointer and current handler. Check that they are expected |
| 1891 | // next on the stack, in that order. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1892 | ASSERT_EQ(StackHandlerConstants::kStateOffset, |
| 1893 | StackHandlerConstants::kPCOffset - kPointerSize); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1894 | ASSERT_EQ(StackHandlerConstants::kFPOffset, |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1895 | StackHandlerConstants::kStateOffset - kPointerSize); |
| 1896 | ASSERT_EQ(StackHandlerConstants::kNextOffset, |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1897 | StackHandlerConstants::kFPOffset - kPointerSize); |
| 1898 | |
| 1899 | if (try_location == IN_JAVASCRIPT) { |
| 1900 | if (type == TRY_CATCH_HANDLER) { |
| 1901 | push(Immediate(StackHandler::TRY_CATCH)); |
| 1902 | } else { |
| 1903 | push(Immediate(StackHandler::TRY_FINALLY)); |
| 1904 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1905 | push(rbp); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1906 | } else { |
| 1907 | ASSERT(try_location == IN_JS_ENTRY); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1908 | // The frame pointer does not point to a JS frame so we save NULL |
| 1909 | // for rbp. We expect the code throwing an exception to check rbp |
| 1910 | // before dereferencing it to restore the context. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1911 | push(Immediate(StackHandler::ENTRY)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1912 | push(Immediate(0)); // NULL frame pointer. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1913 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1914 | // Save the current handler. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1915 | movq(kScratchRegister, ExternalReference(Top::k_handler_address)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1916 | push(Operand(kScratchRegister, 0)); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1917 | // Link this handler. |
| 1918 | movq(Operand(kScratchRegister, 0), rsp); |
| 1919 | } |
| 1920 | |
| 1921 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 1922 | void MacroAssembler::PopTryHandler() { |
| 1923 | ASSERT_EQ(0, StackHandlerConstants::kNextOffset); |
| 1924 | // Unlink this handler. |
| 1925 | movq(kScratchRegister, ExternalReference(Top::k_handler_address)); |
| 1926 | pop(Operand(kScratchRegister, 0)); |
| 1927 | // Remove the remaining fields. |
| 1928 | addq(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
| 1929 | } |
| 1930 | |
| 1931 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1932 | void MacroAssembler::Ret() { |
| 1933 | ret(0); |
| 1934 | } |
| 1935 | |
| 1936 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1937 | void MacroAssembler::FCmp() { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1938 | fucomip(); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1939 | fstp(0); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1940 | } |
| 1941 | |
| 1942 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1943 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 1944 | InstanceType type, |
| 1945 | Register map) { |
| 1946 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 1947 | CmpInstanceType(map, type); |
| 1948 | } |
| 1949 | |
| 1950 | |
| 1951 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 1952 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 1953 | Immediate(static_cast<int8_t>(type))); |
| 1954 | } |
| 1955 | |
| 1956 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1957 | void MacroAssembler::CheckMap(Register obj, |
| 1958 | Handle<Map> map, |
| 1959 | Label* fail, |
| 1960 | bool is_heap_object) { |
| 1961 | if (!is_heap_object) { |
| 1962 | JumpIfSmi(obj, fail); |
| 1963 | } |
| 1964 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
| 1965 | j(not_equal, fail); |
| 1966 | } |
| 1967 | |
| 1968 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1969 | void MacroAssembler::AbortIfNotNumber(Register object) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1970 | Label ok; |
| 1971 | Condition is_smi = CheckSmi(object); |
| 1972 | j(is_smi, &ok); |
| 1973 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
| 1974 | Factory::heap_number_map()); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1975 | Assert(equal, "Operand not a number"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1976 | bind(&ok); |
| 1977 | } |
| 1978 | |
| 1979 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 1980 | void MacroAssembler::AbortIfSmi(Register object) { |
| 1981 | Label ok; |
| 1982 | Condition is_smi = CheckSmi(object); |
| 1983 | Assert(NegateCondition(is_smi), "Operand is a smi"); |
| 1984 | } |
| 1985 | |
| 1986 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1987 | void MacroAssembler::AbortIfNotSmi(Register object) { |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 1988 | Label ok; |
| 1989 | Condition is_smi = CheckSmi(object); |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 1990 | Assert(is_smi, "Operand is not a smi"); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 1991 | } |
| 1992 | |
| 1993 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1994 | void MacroAssembler::AbortIfNotRootValue(Register src, |
| 1995 | Heap::RootListIndex root_value_index, |
| 1996 | const char* message) { |
| 1997 | ASSERT(!src.is(kScratchRegister)); |
| 1998 | LoadRoot(kScratchRegister, root_value_index); |
| 1999 | cmpq(src, kScratchRegister); |
| 2000 | Check(equal, message); |
| 2001 | } |
| 2002 | |
| 2003 | |
| 2004 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2005 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 2006 | Register map, |
| 2007 | Register instance_type) { |
| 2008 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 2009 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 2010 | ASSERT(kNotStringTag != 0); |
| 2011 | testb(instance_type, Immediate(kIsNotStringMask)); |
| 2012 | return zero; |
| 2013 | } |
| 2014 | |
| 2015 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2016 | void MacroAssembler::TryGetFunctionPrototype(Register function, |
| 2017 | Register result, |
| 2018 | Label* miss) { |
| 2019 | // Check that the receiver isn't a smi. |
| 2020 | testl(function, Immediate(kSmiTagMask)); |
| 2021 | j(zero, miss); |
| 2022 | |
| 2023 | // Check that the function really is a function. |
| 2024 | CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 2025 | j(not_equal, miss); |
| 2026 | |
| 2027 | // Make sure that the function has an instance prototype. |
| 2028 | Label non_instance; |
| 2029 | testb(FieldOperand(result, Map::kBitFieldOffset), |
| 2030 | Immediate(1 << Map::kHasNonInstancePrototype)); |
| 2031 | j(not_zero, &non_instance); |
| 2032 | |
| 2033 | // Get the prototype or initial map from the function. |
| 2034 | movq(result, |
| 2035 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2036 | |
| 2037 | // If the prototype or initial map is the hole, don't return it and |
| 2038 | // simply miss the cache instead. This will allow us to allocate a |
| 2039 | // prototype object on-demand in the runtime system. |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2040 | CompareRoot(result, Heap::kTheHoleValueRootIndex); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2041 | j(equal, miss); |
| 2042 | |
| 2043 | // If the function does not have an initial map, we're done. |
| 2044 | Label done; |
| 2045 | CmpObjectType(result, MAP_TYPE, kScratchRegister); |
| 2046 | j(not_equal, &done); |
| 2047 | |
| 2048 | // Get the prototype from the initial map. |
| 2049 | movq(result, FieldOperand(result, Map::kPrototypeOffset)); |
| 2050 | jmp(&done); |
| 2051 | |
| 2052 | // Non-instance prototype: Fetch prototype from constructor field |
| 2053 | // in initial map. |
| 2054 | bind(&non_instance); |
| 2055 | movq(result, FieldOperand(result, Map::kConstructorOffset)); |
| 2056 | |
| 2057 | // All done. |
| 2058 | bind(&done); |
| 2059 | } |
| 2060 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2061 | |
| 2062 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 2063 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2064 | movq(kScratchRegister, ExternalReference(counter)); |
| 2065 | movl(Operand(kScratchRegister, 0), Immediate(value)); |
| 2066 | } |
| 2067 | } |
| 2068 | |
| 2069 | |
| 2070 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
| 2071 | ASSERT(value > 0); |
| 2072 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2073 | movq(kScratchRegister, ExternalReference(counter)); |
| 2074 | Operand operand(kScratchRegister, 0); |
| 2075 | if (value == 1) { |
| 2076 | incl(operand); |
| 2077 | } else { |
| 2078 | addl(operand, Immediate(value)); |
| 2079 | } |
| 2080 | } |
| 2081 | } |
| 2082 | |
| 2083 | |
| 2084 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
| 2085 | ASSERT(value > 0); |
| 2086 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 2087 | movq(kScratchRegister, ExternalReference(counter)); |
| 2088 | Operand operand(kScratchRegister, 0); |
| 2089 | if (value == 1) { |
| 2090 | decl(operand); |
| 2091 | } else { |
| 2092 | subl(operand, Immediate(value)); |
| 2093 | } |
| 2094 | } |
| 2095 | } |
| 2096 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2097 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 2098 | |
| 2099 | void MacroAssembler::PushRegistersFromMemory(RegList regs) { |
| 2100 | ASSERT((regs & ~kJSCallerSaved) == 0); |
| 2101 | // Push the content of the memory location to the stack. |
| 2102 | for (int i = 0; i < kNumJSCallerSaved; i++) { |
| 2103 | int r = JSCallerSavedCode(i); |
| 2104 | if ((regs & (1 << r)) != 0) { |
| 2105 | ExternalReference reg_addr = |
| 2106 | ExternalReference(Debug_Address::Register(i)); |
| 2107 | movq(kScratchRegister, reg_addr); |
| 2108 | push(Operand(kScratchRegister, 0)); |
| 2109 | } |
| 2110 | } |
| 2111 | } |
| 2112 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2113 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2114 | void MacroAssembler::SaveRegistersToMemory(RegList regs) { |
| 2115 | ASSERT((regs & ~kJSCallerSaved) == 0); |
| 2116 | // Copy the content of registers to memory location. |
| 2117 | for (int i = 0; i < kNumJSCallerSaved; i++) { |
| 2118 | int r = JSCallerSavedCode(i); |
| 2119 | if ((regs & (1 << r)) != 0) { |
| 2120 | Register reg = { r }; |
| 2121 | ExternalReference reg_addr = |
| 2122 | ExternalReference(Debug_Address::Register(i)); |
| 2123 | movq(kScratchRegister, reg_addr); |
| 2124 | movq(Operand(kScratchRegister, 0), reg); |
| 2125 | } |
| 2126 | } |
| 2127 | } |
| 2128 | |
| 2129 | |
| 2130 | void MacroAssembler::RestoreRegistersFromMemory(RegList regs) { |
| 2131 | ASSERT((regs & ~kJSCallerSaved) == 0); |
| 2132 | // Copy the content of memory location to registers. |
| 2133 | for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { |
| 2134 | int r = JSCallerSavedCode(i); |
| 2135 | if ((regs & (1 << r)) != 0) { |
| 2136 | Register reg = { r }; |
| 2137 | ExternalReference reg_addr = |
| 2138 | ExternalReference(Debug_Address::Register(i)); |
| 2139 | movq(kScratchRegister, reg_addr); |
| 2140 | movq(reg, Operand(kScratchRegister, 0)); |
| 2141 | } |
| 2142 | } |
| 2143 | } |
| 2144 | |
| 2145 | |
| 2146 | void MacroAssembler::PopRegistersToMemory(RegList regs) { |
| 2147 | ASSERT((regs & ~kJSCallerSaved) == 0); |
| 2148 | // Pop the content from the stack to the memory location. |
| 2149 | for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { |
| 2150 | int r = JSCallerSavedCode(i); |
| 2151 | if ((regs & (1 << r)) != 0) { |
| 2152 | ExternalReference reg_addr = |
| 2153 | ExternalReference(Debug_Address::Register(i)); |
| 2154 | movq(kScratchRegister, reg_addr); |
| 2155 | pop(Operand(kScratchRegister, 0)); |
| 2156 | } |
| 2157 | } |
| 2158 | } |
| 2159 | |
| 2160 | |
| 2161 | void MacroAssembler::CopyRegistersFromStackToMemory(Register base, |
| 2162 | Register scratch, |
| 2163 | RegList regs) { |
| 2164 | ASSERT(!scratch.is(kScratchRegister)); |
| 2165 | ASSERT(!base.is(kScratchRegister)); |
| 2166 | ASSERT(!base.is(scratch)); |
| 2167 | ASSERT((regs & ~kJSCallerSaved) == 0); |
| 2168 | // Copy the content of the stack to the memory location and adjust base. |
| 2169 | for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { |
| 2170 | int r = JSCallerSavedCode(i); |
| 2171 | if ((regs & (1 << r)) != 0) { |
| 2172 | movq(scratch, Operand(base, 0)); |
| 2173 | ExternalReference reg_addr = |
| 2174 | ExternalReference(Debug_Address::Register(i)); |
| 2175 | movq(kScratchRegister, reg_addr); |
| 2176 | movq(Operand(kScratchRegister, 0), scratch); |
| 2177 | lea(base, Operand(base, kPointerSize)); |
| 2178 | } |
| 2179 | } |
| 2180 | } |
| 2181 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2182 | void MacroAssembler::DebugBreak() { |
| 2183 | ASSERT(allow_stub_calls()); |
| 2184 | xor_(rax, rax); // no arguments |
| 2185 | movq(rbx, ExternalReference(Runtime::kDebugBreak)); |
| 2186 | CEntryStub ces(1); |
| 2187 | Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2188 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2189 | #endif // ENABLE_DEBUGGER_SUPPORT |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2190 | |
| 2191 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2192 | void MacroAssembler::InvokePrologue(const ParameterCount& expected, |
| 2193 | const ParameterCount& actual, |
| 2194 | Handle<Code> code_constant, |
| 2195 | Register code_register, |
| 2196 | Label* done, |
| 2197 | InvokeFlag flag) { |
| 2198 | bool definitely_matches = false; |
| 2199 | Label invoke; |
| 2200 | if (expected.is_immediate()) { |
| 2201 | ASSERT(actual.is_immediate()); |
| 2202 | if (expected.immediate() == actual.immediate()) { |
| 2203 | definitely_matches = true; |
| 2204 | } else { |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 2205 | Set(rax, actual.immediate()); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2206 | if (expected.immediate() == |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2207 | SharedFunctionInfo::kDontAdaptArgumentsSentinel) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2208 | // Don't worry about adapting arguments for built-ins that |
| 2209 | // don't want that done. Skip adaption code by making it look |
| 2210 | // like we have a match between expected and actual number of |
| 2211 | // arguments. |
| 2212 | definitely_matches = true; |
| 2213 | } else { |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 2214 | Set(rbx, expected.immediate()); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2215 | } |
| 2216 | } |
| 2217 | } else { |
| 2218 | if (actual.is_immediate()) { |
| 2219 | // Expected is in register, actual is immediate. This is the |
| 2220 | // case when we invoke function values without going through the |
| 2221 | // IC mechanism. |
| 2222 | cmpq(expected.reg(), Immediate(actual.immediate())); |
| 2223 | j(equal, &invoke); |
| 2224 | ASSERT(expected.reg().is(rbx)); |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 2225 | Set(rax, actual.immediate()); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2226 | } else if (!expected.reg().is(actual.reg())) { |
| 2227 | // Both expected and actual are in (different) registers. This |
| 2228 | // is the case when we invoke functions using call and apply. |
| 2229 | cmpq(expected.reg(), actual.reg()); |
| 2230 | j(equal, &invoke); |
| 2231 | ASSERT(actual.reg().is(rax)); |
| 2232 | ASSERT(expected.reg().is(rbx)); |
| 2233 | } |
| 2234 | } |
| 2235 | |
| 2236 | if (!definitely_matches) { |
| 2237 | Handle<Code> adaptor = |
| 2238 | Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)); |
| 2239 | if (!code_constant.is_null()) { |
| 2240 | movq(rdx, code_constant, RelocInfo::EMBEDDED_OBJECT); |
| 2241 | addq(rdx, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 2242 | } else if (!code_register.is(rdx)) { |
| 2243 | movq(rdx, code_register); |
| 2244 | } |
| 2245 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2246 | if (flag == CALL_FUNCTION) { |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 2247 | Call(adaptor, RelocInfo::CODE_TARGET); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2248 | jmp(done); |
| 2249 | } else { |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 2250 | Jump(adaptor, RelocInfo::CODE_TARGET); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2251 | } |
| 2252 | bind(&invoke); |
| 2253 | } |
| 2254 | } |
| 2255 | |
| 2256 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2257 | void MacroAssembler::InvokeCode(Register code, |
| 2258 | const ParameterCount& expected, |
| 2259 | const ParameterCount& actual, |
| 2260 | InvokeFlag flag) { |
| 2261 | Label done; |
| 2262 | InvokePrologue(expected, actual, Handle<Code>::null(), code, &done, flag); |
| 2263 | if (flag == CALL_FUNCTION) { |
| 2264 | call(code); |
| 2265 | } else { |
| 2266 | ASSERT(flag == JUMP_FUNCTION); |
| 2267 | jmp(code); |
| 2268 | } |
| 2269 | bind(&done); |
| 2270 | } |
| 2271 | |
| 2272 | |
| 2273 | void MacroAssembler::InvokeCode(Handle<Code> code, |
| 2274 | const ParameterCount& expected, |
| 2275 | const ParameterCount& actual, |
| 2276 | RelocInfo::Mode rmode, |
| 2277 | InvokeFlag flag) { |
| 2278 | Label done; |
| 2279 | Register dummy = rax; |
| 2280 | InvokePrologue(expected, actual, code, dummy, &done, flag); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2281 | if (flag == CALL_FUNCTION) { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2282 | Call(code, rmode); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2283 | } else { |
| 2284 | ASSERT(flag == JUMP_FUNCTION); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2285 | Jump(code, rmode); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2286 | } |
| 2287 | bind(&done); |
| 2288 | } |
| 2289 | |
| 2290 | |
| 2291 | void MacroAssembler::InvokeFunction(Register function, |
| 2292 | const ParameterCount& actual, |
| 2293 | InvokeFlag flag) { |
| 2294 | ASSERT(function.is(rdi)); |
| 2295 | movq(rdx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 2296 | movq(rsi, FieldOperand(function, JSFunction::kContextOffset)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 2297 | movsxlq(rbx, |
| 2298 | FieldOperand(rdx, SharedFunctionInfo::kFormalParameterCountOffset)); |
vegorov@chromium.org | 26c16f8 | 2010-08-11 13:41:03 +0000 | [diff] [blame] | 2299 | movq(rdx, FieldOperand(rdi, JSFunction::kCodeOffset)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 2300 | // 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] | 2301 | // the executable code. |
| 2302 | lea(rdx, FieldOperand(rdx, Code::kHeaderSize)); |
| 2303 | |
| 2304 | ParameterCount expected(rbx); |
| 2305 | InvokeCode(rdx, expected, actual, flag); |
| 2306 | } |
| 2307 | |
| 2308 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2309 | void MacroAssembler::InvokeFunction(JSFunction* function, |
| 2310 | const ParameterCount& actual, |
| 2311 | InvokeFlag flag) { |
| 2312 | ASSERT(function->is_compiled()); |
| 2313 | // Get the function and setup the context. |
| 2314 | Move(rdi, Handle<JSFunction>(function)); |
| 2315 | movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 2316 | |
| 2317 | // Invoke the cached code. |
| 2318 | Handle<Code> code(function->code()); |
| 2319 | ParameterCount expected(function->shared()->formal_parameter_count()); |
| 2320 | InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag); |
| 2321 | } |
| 2322 | |
| 2323 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2324 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
| 2325 | push(rbp); |
| 2326 | movq(rbp, rsp); |
| 2327 | push(rsi); // Context. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2328 | Push(Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2329 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 2330 | push(kScratchRegister); |
| 2331 | if (FLAG_debug_code) { |
| 2332 | movq(kScratchRegister, |
| 2333 | Factory::undefined_value(), |
| 2334 | RelocInfo::EMBEDDED_OBJECT); |
| 2335 | cmpq(Operand(rsp, 0), kScratchRegister); |
| 2336 | Check(not_equal, "code object not properly patched"); |
| 2337 | } |
| 2338 | } |
| 2339 | |
| 2340 | |
| 2341 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
| 2342 | if (FLAG_debug_code) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2343 | Move(kScratchRegister, Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2344 | cmpq(Operand(rbp, StandardFrameConstants::kMarkerOffset), kScratchRegister); |
| 2345 | Check(equal, "stack frame types must match"); |
| 2346 | } |
| 2347 | movq(rsp, rbp); |
| 2348 | pop(rbp); |
| 2349 | } |
| 2350 | |
| 2351 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2352 | void MacroAssembler::EnterExitFramePrologue(ExitFrame::Mode mode, |
| 2353 | bool save_rax) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2354 | // Setup the frame structure on the stack. |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 2355 | // 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] | 2356 | ASSERT(ExitFrameConstants::kCallerSPDisplacement == +2 * kPointerSize); |
| 2357 | ASSERT(ExitFrameConstants::kCallerPCOffset == +1 * kPointerSize); |
| 2358 | ASSERT(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize); |
| 2359 | push(rbp); |
| 2360 | movq(rbp, rsp); |
| 2361 | |
| 2362 | // Reserve room for entry stack pointer and push the debug marker. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2363 | ASSERT(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2364 | push(Immediate(0)); // Saved entry sp, patched before call. |
| 2365 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 2366 | push(kScratchRegister); // Accessed from EditFrame::code_slot. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2367 | |
| 2368 | // Save the frame pointer and the context in top. |
| 2369 | ExternalReference c_entry_fp_address(Top::k_c_entry_fp_address); |
| 2370 | ExternalReference context_address(Top::k_context_address); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2371 | if (save_rax) { |
| 2372 | movq(r14, rax); // Backup rax before we use it. |
| 2373 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2374 | |
| 2375 | movq(rax, rbp); |
| 2376 | store_rax(c_entry_fp_address); |
| 2377 | movq(rax, rsi); |
| 2378 | store_rax(context_address); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2379 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2380 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2381 | void MacroAssembler::EnterExitFrameEpilogue(ExitFrame::Mode mode, |
| 2382 | int result_size, |
| 2383 | int argc) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2384 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 2385 | // Save the state of all registers to the stack from the memory |
| 2386 | // location. This is needed to allow nested break points. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 2387 | if (mode == ExitFrame::MODE_DEBUG) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2388 | // TODO(1243899): This should be symmetric to |
| 2389 | // CopyRegistersFromStackToMemory() but it isn't! esp is assumed |
| 2390 | // correct here, but computed for the other call. Very error |
| 2391 | // prone! FIX THIS. Actually there are deeper problems with |
| 2392 | // register saving than this asymmetry (see the bug report |
| 2393 | // associated with this issue). |
| 2394 | PushRegistersFromMemory(kJSCallerSaved); |
| 2395 | } |
| 2396 | #endif |
| 2397 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2398 | #ifdef _WIN64 |
| 2399 | // Reserve space on stack for result and argument structures, if necessary. |
| 2400 | int result_stack_space = (result_size < 2) ? 0 : result_size * kPointerSize; |
| 2401 | // Reserve space for the Arguments object. The Windows 64-bit ABI |
| 2402 | // requires us to pass this structure as a pointer to its location on |
| 2403 | // the stack. The structure contains 2 values. |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2404 | int argument_stack_space = argc * kPointerSize; |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2405 | // We also need backing space for 4 parameters, even though |
| 2406 | // we only pass one or two parameter, and it is in a register. |
| 2407 | int argument_mirror_space = 4 * kPointerSize; |
| 2408 | int total_stack_space = |
| 2409 | argument_mirror_space + argument_stack_space + result_stack_space; |
| 2410 | subq(rsp, Immediate(total_stack_space)); |
| 2411 | #endif |
| 2412 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2413 | // Get the required frame alignment for the OS. |
| 2414 | static const int kFrameAlignment = OS::ActivationFrameAlignment(); |
| 2415 | if (kFrameAlignment > 0) { |
| 2416 | ASSERT(IsPowerOf2(kFrameAlignment)); |
| 2417 | movq(kScratchRegister, Immediate(-kFrameAlignment)); |
| 2418 | and_(rsp, kScratchRegister); |
| 2419 | } |
| 2420 | |
| 2421 | // Patch the saved entry sp. |
| 2422 | movq(Operand(rbp, ExitFrameConstants::kSPOffset), rsp); |
| 2423 | } |
| 2424 | |
| 2425 | |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 2426 | void MacroAssembler::EnterExitFrame(ExitFrame::Mode mode, int result_size) { |
| 2427 | EnterExitFramePrologue(mode, true); |
| 2428 | |
| 2429 | // Setup argv in callee-saved register r12. It is reused in LeaveExitFrame, |
| 2430 | // so it must be retained across the C-call. |
| 2431 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
| 2432 | lea(r12, Operand(rbp, r14, times_pointer_size, offset)); |
| 2433 | |
| 2434 | EnterExitFrameEpilogue(mode, result_size, 2); |
| 2435 | } |
| 2436 | |
| 2437 | |
| 2438 | void MacroAssembler::EnterApiExitFrame(ExitFrame::Mode mode, |
| 2439 | int stack_space, |
| 2440 | int argc, |
| 2441 | int result_size) { |
| 2442 | EnterExitFramePrologue(mode, false); |
| 2443 | |
| 2444 | // Setup argv in callee-saved register r12. It is reused in LeaveExitFrame, |
| 2445 | // so it must be retained across the C-call. |
| 2446 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
| 2447 | lea(r12, Operand(rbp, (stack_space * kPointerSize) + offset)); |
| 2448 | |
| 2449 | EnterExitFrameEpilogue(mode, result_size, argc); |
| 2450 | } |
| 2451 | |
| 2452 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 2453 | void MacroAssembler::LeaveExitFrame(ExitFrame::Mode mode, int result_size) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2454 | // Registers: |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 2455 | // r12 : argv |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2456 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 2457 | // Restore the memory copy of the registers by digging them out from |
| 2458 | // the stack. This is needed to allow nested break points. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 2459 | if (mode == ExitFrame::MODE_DEBUG) { |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2460 | // It's okay to clobber register rbx below because we don't need |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2461 | // the function pointer after this. |
| 2462 | const int kCallerSavedSize = kNumJSCallerSaved * kPointerSize; |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 2463 | int kOffset = ExitFrameConstants::kCodeOffset - kCallerSavedSize; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2464 | lea(rbx, Operand(rbp, kOffset)); |
| 2465 | CopyRegistersFromStackToMemory(rbx, rcx, kJSCallerSaved); |
| 2466 | } |
| 2467 | #endif |
| 2468 | |
| 2469 | // Get the return address from the stack and restore the frame pointer. |
| 2470 | movq(rcx, Operand(rbp, 1 * kPointerSize)); |
| 2471 | movq(rbp, Operand(rbp, 0 * kPointerSize)); |
| 2472 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2473 | // Pop everything up to and including the arguments and the receiver |
| 2474 | // from the caller stack. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 2475 | lea(rsp, Operand(r12, 1 * kPointerSize)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 2476 | |
| 2477 | // Restore current context from top and clear it in debug mode. |
| 2478 | ExternalReference context_address(Top::k_context_address); |
| 2479 | movq(kScratchRegister, context_address); |
| 2480 | movq(rsi, Operand(kScratchRegister, 0)); |
| 2481 | #ifdef DEBUG |
| 2482 | movq(Operand(kScratchRegister, 0), Immediate(0)); |
| 2483 | #endif |
| 2484 | |
| 2485 | // Push the return address to get ready to return. |
| 2486 | push(rcx); |
| 2487 | |
| 2488 | // Clear the top frame. |
| 2489 | ExternalReference c_entry_fp_address(Top::k_c_entry_fp_address); |
| 2490 | movq(kScratchRegister, c_entry_fp_address); |
| 2491 | movq(Operand(kScratchRegister, 0), Immediate(0)); |
| 2492 | } |
| 2493 | |
| 2494 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2495 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 2496 | Register scratch, |
| 2497 | Label* miss) { |
| 2498 | Label same_contexts; |
| 2499 | |
| 2500 | ASSERT(!holder_reg.is(scratch)); |
| 2501 | ASSERT(!scratch.is(kScratchRegister)); |
| 2502 | // Load current lexical context from the stack frame. |
| 2503 | movq(scratch, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 2504 | |
| 2505 | // When generating debug code, make sure the lexical context is set. |
| 2506 | if (FLAG_debug_code) { |
| 2507 | cmpq(scratch, Immediate(0)); |
| 2508 | Check(not_equal, "we should not have an empty lexical context"); |
| 2509 | } |
| 2510 | // Load the global context of the current context. |
| 2511 | int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 2512 | movq(scratch, FieldOperand(scratch, offset)); |
| 2513 | movq(scratch, FieldOperand(scratch, GlobalObject::kGlobalContextOffset)); |
| 2514 | |
| 2515 | // Check the context is a global context. |
| 2516 | if (FLAG_debug_code) { |
| 2517 | Cmp(FieldOperand(scratch, HeapObject::kMapOffset), |
| 2518 | Factory::global_context_map()); |
| 2519 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 2520 | } |
| 2521 | |
| 2522 | // Check if both contexts are the same. |
| 2523 | cmpq(scratch, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
| 2524 | j(equal, &same_contexts); |
| 2525 | |
| 2526 | // Compare security tokens. |
| 2527 | // Check that the security token in the calling global object is |
| 2528 | // compatible with the security token in the receiving global |
| 2529 | // object. |
| 2530 | |
| 2531 | // Check the context is a global context. |
| 2532 | if (FLAG_debug_code) { |
| 2533 | // Preserve original value of holder_reg. |
| 2534 | push(holder_reg); |
| 2535 | movq(holder_reg, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2536 | CompareRoot(holder_reg, Heap::kNullValueRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2537 | Check(not_equal, "JSGlobalProxy::context() should not be null."); |
| 2538 | |
| 2539 | // Read the first word and compare to global_context_map(), |
| 2540 | movq(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2541 | CompareRoot(holder_reg, Heap::kGlobalContextMapRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2542 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 2543 | pop(holder_reg); |
| 2544 | } |
| 2545 | |
| 2546 | movq(kScratchRegister, |
| 2547 | FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 2548 | int token_offset = |
| 2549 | Context::kHeaderSize + Context::SECURITY_TOKEN_INDEX * kPointerSize; |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 2550 | movq(scratch, FieldOperand(scratch, token_offset)); |
| 2551 | cmpq(scratch, FieldOperand(kScratchRegister, token_offset)); |
| 2552 | j(not_equal, miss); |
| 2553 | |
| 2554 | bind(&same_contexts); |
| 2555 | } |
| 2556 | |
| 2557 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2558 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
| 2559 | Register result_end, |
| 2560 | Register scratch, |
| 2561 | AllocationFlags flags) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2562 | ExternalReference new_space_allocation_top = |
| 2563 | ExternalReference::new_space_allocation_top_address(); |
| 2564 | |
| 2565 | // Just return if allocation top is already known. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2566 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2567 | // No use of scratch if allocation top is provided. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2568 | ASSERT(!scratch.is_valid()); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2569 | #ifdef DEBUG |
| 2570 | // Assert that result actually contains top on entry. |
| 2571 | movq(kScratchRegister, new_space_allocation_top); |
| 2572 | cmpq(result, Operand(kScratchRegister, 0)); |
| 2573 | Check(equal, "Unexpected allocation top"); |
| 2574 | #endif |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2575 | return; |
| 2576 | } |
| 2577 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2578 | // Move address of new object to result. Use scratch register if available, |
| 2579 | // and keep address in scratch until call to UpdateAllocationTopHelper. |
| 2580 | if (scratch.is_valid()) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2581 | ASSERT(!scratch.is(result_end)); |
| 2582 | movq(scratch, new_space_allocation_top); |
| 2583 | movq(result, Operand(scratch, 0)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2584 | } else if (result.is(rax)) { |
| 2585 | load_rax(new_space_allocation_top); |
| 2586 | } else { |
| 2587 | movq(kScratchRegister, new_space_allocation_top); |
| 2588 | movq(result, Operand(kScratchRegister, 0)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2589 | } |
| 2590 | } |
| 2591 | |
| 2592 | |
| 2593 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
| 2594 | Register scratch) { |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2595 | if (FLAG_debug_code) { |
| 2596 | testq(result_end, Immediate(kObjectAlignmentMask)); |
| 2597 | Check(zero, "Unaligned allocation in new space"); |
| 2598 | } |
| 2599 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2600 | ExternalReference new_space_allocation_top = |
| 2601 | ExternalReference::new_space_allocation_top_address(); |
| 2602 | |
| 2603 | // Update new top. |
| 2604 | if (result_end.is(rax)) { |
| 2605 | // rax can be stored directly to a memory location. |
| 2606 | store_rax(new_space_allocation_top); |
| 2607 | } else { |
| 2608 | // Register required - use scratch provided if available. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2609 | if (scratch.is_valid()) { |
| 2610 | movq(Operand(scratch, 0), result_end); |
| 2611 | } else { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2612 | movq(kScratchRegister, new_space_allocation_top); |
| 2613 | movq(Operand(kScratchRegister, 0), result_end); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2614 | } |
| 2615 | } |
| 2616 | } |
| 2617 | |
| 2618 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2619 | void MacroAssembler::AllocateInNewSpace(int object_size, |
| 2620 | Register result, |
| 2621 | Register result_end, |
| 2622 | Register scratch, |
| 2623 | Label* gc_required, |
| 2624 | AllocationFlags flags) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2625 | ASSERT(!result.is(result_end)); |
| 2626 | |
| 2627 | // Load address of new object into result. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2628 | LoadAllocationTopHelper(result, result_end, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2629 | |
| 2630 | // Calculate new top and bail out if new space is exhausted. |
| 2631 | ExternalReference new_space_allocation_limit = |
| 2632 | ExternalReference::new_space_allocation_limit_address(); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2633 | |
| 2634 | Register top_reg = result_end.is_valid() ? result_end : result; |
| 2635 | |
| 2636 | if (top_reg.is(result)) { |
| 2637 | addq(top_reg, Immediate(object_size)); |
| 2638 | } else { |
| 2639 | lea(top_reg, Operand(result, object_size)); |
| 2640 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2641 | movq(kScratchRegister, new_space_allocation_limit); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2642 | cmpq(top_reg, Operand(kScratchRegister, 0)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2643 | j(above, gc_required); |
| 2644 | |
| 2645 | // Update allocation top. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2646 | UpdateAllocationTopHelper(top_reg, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2647 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2648 | if (top_reg.is(result)) { |
| 2649 | if ((flags & TAG_OBJECT) != 0) { |
| 2650 | subq(result, Immediate(object_size - kHeapObjectTag)); |
| 2651 | } else { |
| 2652 | subq(result, Immediate(object_size)); |
| 2653 | } |
| 2654 | } else if ((flags & TAG_OBJECT) != 0) { |
| 2655 | // Tag the result if requested. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2656 | addq(result, Immediate(kHeapObjectTag)); |
| 2657 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2658 | } |
| 2659 | |
| 2660 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2661 | void MacroAssembler::AllocateInNewSpace(int header_size, |
| 2662 | ScaleFactor element_size, |
| 2663 | Register element_count, |
| 2664 | Register result, |
| 2665 | Register result_end, |
| 2666 | Register scratch, |
| 2667 | Label* gc_required, |
| 2668 | AllocationFlags flags) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2669 | ASSERT(!result.is(result_end)); |
| 2670 | |
| 2671 | // Load address of new object into result. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2672 | LoadAllocationTopHelper(result, result_end, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2673 | |
| 2674 | // Calculate new top and bail out if new space is exhausted. |
| 2675 | ExternalReference new_space_allocation_limit = |
| 2676 | ExternalReference::new_space_allocation_limit_address(); |
| 2677 | lea(result_end, Operand(result, element_count, element_size, header_size)); |
| 2678 | movq(kScratchRegister, new_space_allocation_limit); |
| 2679 | cmpq(result_end, Operand(kScratchRegister, 0)); |
| 2680 | j(above, gc_required); |
| 2681 | |
| 2682 | // Update allocation top. |
| 2683 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2684 | |
| 2685 | // Tag the result if requested. |
| 2686 | if ((flags & TAG_OBJECT) != 0) { |
| 2687 | addq(result, Immediate(kHeapObjectTag)); |
| 2688 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2689 | } |
| 2690 | |
| 2691 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2692 | void MacroAssembler::AllocateInNewSpace(Register object_size, |
| 2693 | Register result, |
| 2694 | Register result_end, |
| 2695 | Register scratch, |
| 2696 | Label* gc_required, |
| 2697 | AllocationFlags flags) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2698 | // Load address of new object into result. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2699 | LoadAllocationTopHelper(result, result_end, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2700 | |
| 2701 | // Calculate new top and bail out if new space is exhausted. |
| 2702 | ExternalReference new_space_allocation_limit = |
| 2703 | ExternalReference::new_space_allocation_limit_address(); |
| 2704 | if (!object_size.is(result_end)) { |
| 2705 | movq(result_end, object_size); |
| 2706 | } |
| 2707 | addq(result_end, result); |
| 2708 | movq(kScratchRegister, new_space_allocation_limit); |
| 2709 | cmpq(result_end, Operand(kScratchRegister, 0)); |
| 2710 | j(above, gc_required); |
| 2711 | |
| 2712 | // Update allocation top. |
| 2713 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2714 | |
| 2715 | // Tag the result if requested. |
| 2716 | if ((flags & TAG_OBJECT) != 0) { |
| 2717 | addq(result, Immediate(kHeapObjectTag)); |
| 2718 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2719 | } |
| 2720 | |
| 2721 | |
| 2722 | void MacroAssembler::UndoAllocationInNewSpace(Register object) { |
| 2723 | ExternalReference new_space_allocation_top = |
| 2724 | ExternalReference::new_space_allocation_top_address(); |
| 2725 | |
| 2726 | // Make sure the object has no tag before resetting top. |
| 2727 | and_(object, Immediate(~kHeapObjectTagMask)); |
| 2728 | movq(kScratchRegister, new_space_allocation_top); |
| 2729 | #ifdef DEBUG |
| 2730 | cmpq(object, Operand(kScratchRegister, 0)); |
| 2731 | Check(below, "Undo allocation of non allocated memory"); |
| 2732 | #endif |
| 2733 | movq(Operand(kScratchRegister, 0), object); |
| 2734 | } |
| 2735 | |
| 2736 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 2737 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 2738 | Register scratch, |
| 2739 | Label* gc_required) { |
| 2740 | // Allocate heap number in new space. |
| 2741 | AllocateInNewSpace(HeapNumber::kSize, |
| 2742 | result, |
| 2743 | scratch, |
| 2744 | no_reg, |
| 2745 | gc_required, |
| 2746 | TAG_OBJECT); |
| 2747 | |
| 2748 | // Set the map. |
| 2749 | LoadRoot(kScratchRegister, Heap::kHeapNumberMapRootIndex); |
| 2750 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2751 | } |
| 2752 | |
| 2753 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2754 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 2755 | Register length, |
| 2756 | Register scratch1, |
| 2757 | Register scratch2, |
| 2758 | Register scratch3, |
| 2759 | Label* gc_required) { |
| 2760 | // Calculate the number of bytes needed for the characters in the string while |
| 2761 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2762 | const int kHeaderAlignment = SeqTwoByteString::kHeaderSize & |
| 2763 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2764 | ASSERT(kShortSize == 2); |
| 2765 | // scratch1 = length * 2 + kObjectAlignmentMask. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2766 | lea(scratch1, Operand(length, length, times_1, kObjectAlignmentMask + |
| 2767 | kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2768 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2769 | if (kHeaderAlignment > 0) { |
| 2770 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 2771 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2772 | |
| 2773 | // Allocate two byte string in new space. |
| 2774 | AllocateInNewSpace(SeqTwoByteString::kHeaderSize, |
| 2775 | times_1, |
| 2776 | scratch1, |
| 2777 | result, |
| 2778 | scratch2, |
| 2779 | scratch3, |
| 2780 | gc_required, |
| 2781 | TAG_OBJECT); |
| 2782 | |
| 2783 | // Set the map, length and hash field. |
| 2784 | LoadRoot(kScratchRegister, Heap::kStringMapRootIndex); |
| 2785 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2786 | Integer32ToSmi(scratch1, length); |
| 2787 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2788 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2789 | Immediate(String::kEmptyHashField)); |
| 2790 | } |
| 2791 | |
| 2792 | |
| 2793 | void MacroAssembler::AllocateAsciiString(Register result, |
| 2794 | Register length, |
| 2795 | Register scratch1, |
| 2796 | Register scratch2, |
| 2797 | Register scratch3, |
| 2798 | Label* gc_required) { |
| 2799 | // Calculate the number of bytes needed for the characters in the string while |
| 2800 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2801 | const int kHeaderAlignment = SeqAsciiString::kHeaderSize & |
| 2802 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2803 | movl(scratch1, length); |
| 2804 | ASSERT(kCharSize == 1); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2805 | addq(scratch1, Immediate(kObjectAlignmentMask + kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2806 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2807 | if (kHeaderAlignment > 0) { |
| 2808 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 2809 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2810 | |
| 2811 | // Allocate ascii string in new space. |
| 2812 | AllocateInNewSpace(SeqAsciiString::kHeaderSize, |
| 2813 | times_1, |
| 2814 | scratch1, |
| 2815 | result, |
| 2816 | scratch2, |
| 2817 | scratch3, |
| 2818 | gc_required, |
| 2819 | TAG_OBJECT); |
| 2820 | |
| 2821 | // Set the map, length and hash field. |
| 2822 | LoadRoot(kScratchRegister, Heap::kAsciiStringMapRootIndex); |
| 2823 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2824 | Integer32ToSmi(scratch1, length); |
| 2825 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2826 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2827 | Immediate(String::kEmptyHashField)); |
| 2828 | } |
| 2829 | |
| 2830 | |
| 2831 | void MacroAssembler::AllocateConsString(Register result, |
| 2832 | Register scratch1, |
| 2833 | Register scratch2, |
| 2834 | Label* gc_required) { |
| 2835 | // Allocate heap number in new space. |
| 2836 | AllocateInNewSpace(ConsString::kSize, |
| 2837 | result, |
| 2838 | scratch1, |
| 2839 | scratch2, |
| 2840 | gc_required, |
| 2841 | TAG_OBJECT); |
| 2842 | |
| 2843 | // Set the map. The other fields are left uninitialized. |
| 2844 | LoadRoot(kScratchRegister, Heap::kConsStringMapRootIndex); |
| 2845 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2846 | } |
| 2847 | |
| 2848 | |
| 2849 | void MacroAssembler::AllocateAsciiConsString(Register result, |
| 2850 | Register scratch1, |
| 2851 | Register scratch2, |
| 2852 | Label* gc_required) { |
| 2853 | // Allocate heap number in new space. |
| 2854 | AllocateInNewSpace(ConsString::kSize, |
| 2855 | result, |
| 2856 | scratch1, |
| 2857 | scratch2, |
| 2858 | gc_required, |
| 2859 | TAG_OBJECT); |
| 2860 | |
| 2861 | // Set the map. The other fields are left uninitialized. |
| 2862 | LoadRoot(kScratchRegister, Heap::kConsAsciiStringMapRootIndex); |
| 2863 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2864 | } |
| 2865 | |
| 2866 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2867 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 2868 | if (context_chain_length > 0) { |
| 2869 | // Move up the chain of contexts to the context containing the slot. |
| 2870 | movq(dst, Operand(rsi, Context::SlotOffset(Context::CLOSURE_INDEX))); |
| 2871 | // Load the function context (which is the incoming, outer context). |
lrn@chromium.org | d5649e3 | 2010-01-19 13:36:12 +0000 | [diff] [blame] | 2872 | movq(dst, FieldOperand(dst, JSFunction::kContextOffset)); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2873 | for (int i = 1; i < context_chain_length; i++) { |
| 2874 | movq(dst, Operand(dst, Context::SlotOffset(Context::CLOSURE_INDEX))); |
| 2875 | movq(dst, FieldOperand(dst, JSFunction::kContextOffset)); |
| 2876 | } |
| 2877 | // The context may be an intermediate context, not a function context. |
| 2878 | movq(dst, Operand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); |
| 2879 | } else { // context is the current function context. |
| 2880 | // The context may be an intermediate context, not a function context. |
| 2881 | movq(dst, Operand(rsi, Context::SlotOffset(Context::FCONTEXT_INDEX))); |
| 2882 | } |
| 2883 | } |
| 2884 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2885 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2886 | int MacroAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2887 | // On Windows 64 stack slots are reserved by the caller for all arguments |
| 2888 | // including the ones passed in registers, and space is always allocated for |
| 2889 | // the four register arguments even if the function takes fewer than four |
| 2890 | // arguments. |
| 2891 | // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers |
| 2892 | // and the caller does not reserve stack slots for them. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2893 | ASSERT(num_arguments >= 0); |
| 2894 | #ifdef _WIN64 |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2895 | static const int kMinimumStackSlots = 4; |
| 2896 | if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
| 2897 | return num_arguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2898 | #else |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2899 | static const int kRegisterPassedArguments = 6; |
| 2900 | if (num_arguments < kRegisterPassedArguments) return 0; |
| 2901 | return num_arguments - kRegisterPassedArguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2902 | #endif |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2903 | } |
| 2904 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2905 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2906 | void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
| 2907 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 2908 | ASSERT(frame_alignment != 0); |
| 2909 | ASSERT(num_arguments >= 0); |
| 2910 | // Make stack end at alignment and allocate space for arguments and old rsp. |
| 2911 | movq(kScratchRegister, rsp); |
| 2912 | ASSERT(IsPowerOf2(frame_alignment)); |
| 2913 | int argument_slots_on_stack = |
| 2914 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 2915 | subq(rsp, Immediate((argument_slots_on_stack + 1) * kPointerSize)); |
| 2916 | and_(rsp, Immediate(-frame_alignment)); |
| 2917 | movq(Operand(rsp, argument_slots_on_stack * kPointerSize), kScratchRegister); |
| 2918 | } |
| 2919 | |
| 2920 | |
| 2921 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 2922 | int num_arguments) { |
| 2923 | movq(rax, function); |
| 2924 | CallCFunction(rax, num_arguments); |
| 2925 | } |
| 2926 | |
| 2927 | |
| 2928 | void MacroAssembler::CallCFunction(Register function, int num_arguments) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 2929 | // Check stack alignment. |
| 2930 | if (FLAG_debug_code) { |
| 2931 | CheckStackAlignment(); |
| 2932 | } |
| 2933 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2934 | call(function); |
| 2935 | ASSERT(OS::ActivationFrameAlignment() != 0); |
| 2936 | ASSERT(num_arguments >= 0); |
| 2937 | int argument_slots_on_stack = |
| 2938 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 2939 | movq(rsp, Operand(rsp, argument_slots_on_stack * kPointerSize)); |
| 2940 | } |
| 2941 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2942 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2943 | CodePatcher::CodePatcher(byte* address, int size) |
| 2944 | : address_(address), size_(size), masm_(address, size + Assembler::kGap) { |
| 2945 | // Create a new macro assembler pointing to the address of the code to patch. |
| 2946 | // The size is adjusted with kGap on order for the assembler to generate size |
| 2947 | // bytes of instructions without failing with buffer size constraints. |
| 2948 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 2949 | } |
| 2950 | |
| 2951 | |
| 2952 | CodePatcher::~CodePatcher() { |
| 2953 | // Indicate that code has changed. |
| 2954 | CPU::FlushICache(address_, size_); |
| 2955 | |
| 2956 | // Check that the code was patched as expected. |
| 2957 | ASSERT(masm_.pc_ == address_ + size_); |
| 2958 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 2959 | } |
| 2960 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 2961 | } } // namespace v8::internal |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2962 | |
| 2963 | #endif // V8_TARGET_ARCH_X64 |