fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 28 | #include "v8.h" |
| 29 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 30 | #if defined(V8_TARGET_ARCH_X64) |
| 31 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 32 | #include "bootstrapper.h" |
| 33 | #include "codegen-inl.h" |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 34 | #include "assembler-x64.h" |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 35 | #include "macro-assembler-x64.h" |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 36 | #include "serialize.h" |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 37 | #include "debug.h" |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 38 | #include "heap.h" |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 39 | |
| 40 | namespace v8 { |
| 41 | namespace internal { |
| 42 | |
| 43 | MacroAssembler::MacroAssembler(void* buffer, int size) |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 44 | : Assembler(buffer, size), |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 45 | generating_stub_(false), |
| 46 | allow_stub_calls_(true), |
| 47 | code_object_(Heap::undefined_value()) { |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 48 | } |
| 49 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 50 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 51 | void MacroAssembler::LoadRoot(Register destination, Heap::RootListIndex index) { |
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. |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 88 | NearLabel not_in_new_space; |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 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) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 174 | NearLabel okay; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 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 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 224 | void MacroAssembler::Assert(Condition cc, const char* msg) { |
| 225 | if (FLAG_debug_code) Check(cc, msg); |
| 226 | } |
| 227 | |
| 228 | |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 229 | void MacroAssembler::AssertFastElements(Register elements) { |
| 230 | if (FLAG_debug_code) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 231 | NearLabel ok; |
ricow@chromium.org | 0b9f850 | 2010-08-18 07:45:01 +0000 | [diff] [blame] | 232 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 233 | Heap::kFixedArrayMapRootIndex); |
| 234 | j(equal, &ok); |
| 235 | CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), |
| 236 | Heap::kFixedCOWArrayMapRootIndex); |
| 237 | j(equal, &ok); |
| 238 | Abort("JSObject with fast elements map has slow elements"); |
| 239 | bind(&ok); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 244 | void MacroAssembler::Check(Condition cc, const char* msg) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 245 | NearLabel L; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 246 | j(cc, &L); |
| 247 | Abort(msg); |
| 248 | // will not return here |
| 249 | bind(&L); |
| 250 | } |
| 251 | |
| 252 | |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 253 | void MacroAssembler::CheckStackAlignment() { |
| 254 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 255 | int frame_alignment_mask = frame_alignment - 1; |
| 256 | if (frame_alignment > kPointerSize) { |
| 257 | ASSERT(IsPowerOf2(frame_alignment)); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 258 | NearLabel alignment_as_expected; |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 259 | testq(rsp, Immediate(frame_alignment_mask)); |
| 260 | j(zero, &alignment_as_expected); |
| 261 | // Abort if stack is not aligned. |
| 262 | int3(); |
| 263 | bind(&alignment_as_expected); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 268 | void MacroAssembler::NegativeZeroTest(Register result, |
| 269 | Register op, |
| 270 | Label* then_label) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 271 | NearLabel ok; |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 272 | testl(result, result); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 273 | j(not_zero, &ok); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 274 | testl(op, op); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 275 | j(sign, then_label); |
| 276 | bind(&ok); |
| 277 | } |
| 278 | |
| 279 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 280 | void MacroAssembler::Abort(const char* msg) { |
| 281 | // We want to pass the msg string like a smi to avoid GC |
| 282 | // problems, however msg is not guaranteed to be aligned |
| 283 | // properly. Instead, we pass an aligned pointer that is |
| 284 | // a proper v8 smi, but also pass the alignment difference |
| 285 | // from the real pointer as a smi. |
| 286 | intptr_t p1 = reinterpret_cast<intptr_t>(msg); |
| 287 | intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag; |
| 288 | // Note: p0 might not be a valid Smi *value*, but it has a valid Smi tag. |
| 289 | ASSERT(reinterpret_cast<Object*>(p0)->IsSmi()); |
| 290 | #ifdef DEBUG |
| 291 | if (msg != NULL) { |
| 292 | RecordComment("Abort message: "); |
| 293 | RecordComment(msg); |
| 294 | } |
| 295 | #endif |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 296 | // Disable stub call restrictions to always allow calls to abort. |
| 297 | set_allow_stub_calls(true); |
| 298 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 299 | push(rax); |
| 300 | movq(kScratchRegister, p0, RelocInfo::NONE); |
| 301 | push(kScratchRegister); |
| 302 | movq(kScratchRegister, |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 303 | reinterpret_cast<intptr_t>(Smi::FromInt(static_cast<int>(p1 - p0))), |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 304 | RelocInfo::NONE); |
| 305 | push(kScratchRegister); |
| 306 | CallRuntime(Runtime::kAbort, 2); |
| 307 | // will not return here |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 308 | int3(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | |
| 312 | void MacroAssembler::CallStub(CodeStub* stub) { |
| 313 | ASSERT(allow_stub_calls()); // calls are not allowed in some stubs |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 314 | Call(stub->GetCode(), RelocInfo::CODE_TARGET); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 315 | } |
| 316 | |
| 317 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 318 | MaybeObject* MacroAssembler::TryCallStub(CodeStub* stub) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 319 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 320 | MaybeObject* result = stub->TryGetCode(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 321 | if (!result->IsFailure()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 322 | call(Handle<Code>(Code::cast(result->ToObjectUnchecked())), |
| 323 | RelocInfo::CODE_TARGET); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 324 | } |
| 325 | return result; |
| 326 | } |
| 327 | |
| 328 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 329 | void MacroAssembler::TailCallStub(CodeStub* stub) { |
| 330 | ASSERT(allow_stub_calls()); // calls are not allowed in some stubs |
| 331 | Jump(stub->GetCode(), RelocInfo::CODE_TARGET); |
| 332 | } |
| 333 | |
| 334 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 335 | MaybeObject* MacroAssembler::TryTailCallStub(CodeStub* stub) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 336 | ASSERT(allow_stub_calls()); // Calls are not allowed in some stubs. |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 337 | MaybeObject* result = stub->TryGetCode(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 338 | if (!result->IsFailure()) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 339 | jmp(Handle<Code>(Code::cast(result->ToObjectUnchecked())), |
| 340 | RelocInfo::CODE_TARGET); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 341 | } |
| 342 | return result; |
| 343 | } |
| 344 | |
| 345 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 346 | void MacroAssembler::StubReturn(int argc) { |
| 347 | ASSERT(argc >= 1 && generating_stub()); |
| 348 | ret((argc - 1) * kPointerSize); |
| 349 | } |
| 350 | |
| 351 | |
| 352 | void MacroAssembler::IllegalOperation(int num_arguments) { |
| 353 | if (num_arguments > 0) { |
| 354 | addq(rsp, Immediate(num_arguments * kPointerSize)); |
| 355 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 356 | LoadRoot(rax, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 360 | void MacroAssembler::IndexFromHash(Register hash, Register index) { |
| 361 | // The assert checks that the constants for the maximum number of digits |
| 362 | // for an array index cached in the hash field and the number of bits |
| 363 | // reserved for it does not conflict. |
| 364 | ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < |
| 365 | (1 << String::kArrayIndexValueBits)); |
| 366 | // We want the smi-tagged index in key. Even if we subsequently go to |
| 367 | // the slow case, converting the key to a smi is always valid. |
| 368 | // key: string key |
| 369 | // hash: key's hash field, including its array index value. |
| 370 | and_(hash, Immediate(String::kArrayIndexValueMask)); |
| 371 | shr(hash, Immediate(String::kHashShift)); |
| 372 | // Here we actually clobber the key which will be used if calling into |
| 373 | // runtime later. However as the new key is the numeric value of a string key |
| 374 | // there is no difference in using either key. |
| 375 | Integer32ToSmi(index, hash); |
| 376 | } |
| 377 | |
| 378 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 379 | void MacroAssembler::CallRuntime(Runtime::FunctionId id, int num_arguments) { |
| 380 | CallRuntime(Runtime::FunctionForId(id), num_arguments); |
| 381 | } |
| 382 | |
| 383 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 384 | MaybeObject* MacroAssembler::TryCallRuntime(Runtime::FunctionId id, |
| 385 | int num_arguments) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 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 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 410 | MaybeObject* MacroAssembler::TryCallRuntime(Runtime::Function* f, |
| 411 | int num_arguments) { |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 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 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 474 | void MacroAssembler::PrepareCallApiFunction(int stack_space) { |
| 475 | EnterApiExitFrame(stack_space, 0); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 479 | void MacroAssembler::CallApiFunctionAndReturn(ApiFunction* function) { |
| 480 | Label empty_result; |
| 481 | Label prologue; |
| 482 | Label promote_scheduled_exception; |
| 483 | Label delete_allocated_handles; |
| 484 | Label leave_exit_frame; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 485 | Label write_back; |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 486 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 487 | ExternalReference next_address = |
| 488 | ExternalReference::handle_scope_next_address(); |
| 489 | const int kNextOffset = 0; |
| 490 | const int kLimitOffset = Offset( |
| 491 | ExternalReference::handle_scope_limit_address(), |
| 492 | next_address); |
| 493 | const int kLevelOffset = Offset( |
| 494 | ExternalReference::handle_scope_level_address(), |
| 495 | next_address); |
| 496 | ExternalReference scheduled_exception_address = |
| 497 | ExternalReference::scheduled_exception_address(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 498 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 499 | // Allocate HandleScope in callee-save registers. |
| 500 | Register prev_next_address_reg = r14; |
| 501 | Register prev_limit_reg = rbx; |
| 502 | Register base_reg = kSmiConstantRegister; |
| 503 | movq(base_reg, next_address); |
| 504 | movq(prev_next_address_reg, Operand(base_reg, kNextOffset)); |
| 505 | movq(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 506 | addl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 507 | // Call the api function! |
| 508 | movq(rax, |
| 509 | reinterpret_cast<int64_t>(function->address()), |
| 510 | RelocInfo::RUNTIME_ENTRY); |
| 511 | call(rax); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 512 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 513 | #ifdef _WIN64 |
| 514 | // rax keeps a pointer to v8::Handle, unpack it. |
| 515 | movq(rax, Operand(rax, 0)); |
| 516 | #endif |
| 517 | // Check if the result handle holds 0. |
| 518 | testq(rax, rax); |
| 519 | j(zero, &empty_result); |
| 520 | // It was non-zero. Dereference to get the result value. |
| 521 | movq(rax, Operand(rax, 0)); |
| 522 | bind(&prologue); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 523 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 524 | // No more valid handles (the result handle was the last one). Restore |
| 525 | // previous handle scope. |
| 526 | subl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 527 | movq(Operand(base_reg, kNextOffset), prev_next_address_reg); |
| 528 | cmpq(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 529 | j(not_equal, &delete_allocated_handles); |
| 530 | bind(&leave_exit_frame); |
| 531 | InitializeSmiConstantRegister(); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 532 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 533 | // Check if the function scheduled an exception. |
| 534 | movq(rsi, scheduled_exception_address); |
| 535 | Cmp(Operand(rsi, 0), Factory::the_hole_value()); |
| 536 | j(not_equal, &promote_scheduled_exception); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 537 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 538 | LeaveExitFrame(); |
| 539 | ret(0); |
| 540 | |
| 541 | bind(&promote_scheduled_exception); |
| 542 | TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1); |
| 543 | |
| 544 | bind(&empty_result); |
| 545 | // It was zero; the result is undefined. |
| 546 | Move(rax, Factory::undefined_value()); |
| 547 | jmp(&prologue); |
| 548 | |
| 549 | // HandleScope limit has changed. Delete allocated extensions. |
| 550 | bind(&delete_allocated_handles); |
| 551 | movq(Operand(base_reg, kLimitOffset), prev_limit_reg); |
| 552 | movq(prev_limit_reg, rax); |
| 553 | movq(rax, ExternalReference::delete_handle_scope_extensions()); |
| 554 | call(rax); |
| 555 | movq(rax, prev_limit_reg); |
| 556 | jmp(&leave_exit_frame); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 557 | } |
| 558 | |
| 559 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 560 | void MacroAssembler::JumpToExternalReference(const ExternalReference& ext, |
| 561 | int result_size) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 562 | // Set the entry point and jump to the C entry runtime stub. |
| 563 | movq(rbx, ext); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 564 | CEntryStub ces(result_size); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 565 | jmp(ces.GetCode(), RelocInfo::CODE_TARGET); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 566 | } |
| 567 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 568 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 569 | void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag) { |
| 570 | // Calls are not allowed in some stubs. |
| 571 | ASSERT(flag == JUMP_FUNCTION || allow_stub_calls()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 572 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 573 | // Rely on the assertion to check that the number of provided |
| 574 | // arguments match the expected number of arguments. Fake a |
| 575 | // parameter count to avoid emitting code to do the check. |
| 576 | ParameterCount expected(0); |
| 577 | GetBuiltinEntry(rdx, id); |
| 578 | InvokeCode(rdx, expected, expected, flag); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 579 | } |
| 580 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 581 | |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 582 | void MacroAssembler::GetBuiltinFunction(Register target, |
| 583 | Builtins::JavaScript id) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 584 | // Load the builtins object into target register. |
| 585 | movq(target, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 586 | movq(target, FieldOperand(target, GlobalObject::kBuiltinsOffset)); |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 587 | movq(target, FieldOperand(target, |
| 588 | JSBuiltinsObject::OffsetOfFunctionWithId(id))); |
| 589 | } |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 590 | |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 591 | |
| 592 | void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) { |
| 593 | ASSERT(!target.is(rdi)); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 594 | // Load the JavaScript builtin function from the builtins object. |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 595 | GetBuiltinFunction(rdi, id); |
| 596 | movq(target, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 600 | void MacroAssembler::Set(Register dst, int64_t x) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 601 | if (x == 0) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 602 | xorl(dst, dst); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 603 | } else if (is_int32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 604 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 605 | } else if (is_uint32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 606 | movl(dst, Immediate(static_cast<uint32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 607 | } else { |
| 608 | movq(dst, x, RelocInfo::NONE); |
| 609 | } |
| 610 | } |
| 611 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 612 | void MacroAssembler::Set(const Operand& dst, int64_t x) { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 613 | if (is_int32(x)) { |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 614 | movq(dst, Immediate(static_cast<int32_t>(x))); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 615 | } else { |
| 616 | movq(kScratchRegister, x, RelocInfo::NONE); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 617 | movq(dst, kScratchRegister); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 618 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 619 | } |
| 620 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 621 | // ---------------------------------------------------------------------------- |
| 622 | // Smi tagging, untagging and tag detection. |
| 623 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 624 | Register MacroAssembler::GetSmiConstant(Smi* source) { |
| 625 | int value = source->value(); |
| 626 | if (value == 0) { |
| 627 | xorl(kScratchRegister, kScratchRegister); |
| 628 | return kScratchRegister; |
| 629 | } |
| 630 | if (value == 1) { |
| 631 | return kSmiConstantRegister; |
| 632 | } |
| 633 | LoadSmiConstant(kScratchRegister, source); |
| 634 | return kScratchRegister; |
| 635 | } |
| 636 | |
| 637 | void MacroAssembler::LoadSmiConstant(Register dst, Smi* source) { |
| 638 | if (FLAG_debug_code) { |
| 639 | movq(dst, |
| 640 | reinterpret_cast<uint64_t>(Smi::FromInt(kSmiConstantRegisterValue)), |
| 641 | RelocInfo::NONE); |
| 642 | cmpq(dst, kSmiConstantRegister); |
| 643 | if (allow_stub_calls()) { |
| 644 | Assert(equal, "Uninitialized kSmiConstantRegister"); |
| 645 | } else { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 646 | NearLabel ok; |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 647 | j(equal, &ok); |
| 648 | int3(); |
| 649 | bind(&ok); |
| 650 | } |
| 651 | } |
| 652 | if (source->value() == 0) { |
| 653 | xorl(dst, dst); |
| 654 | return; |
| 655 | } |
| 656 | int value = source->value(); |
| 657 | bool negative = value < 0; |
| 658 | unsigned int uvalue = negative ? -value : value; |
| 659 | |
| 660 | switch (uvalue) { |
| 661 | case 9: |
| 662 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_8, 0)); |
| 663 | break; |
| 664 | case 8: |
| 665 | xorl(dst, dst); |
| 666 | lea(dst, Operand(dst, kSmiConstantRegister, times_8, 0)); |
| 667 | break; |
| 668 | case 4: |
| 669 | xorl(dst, dst); |
| 670 | lea(dst, Operand(dst, kSmiConstantRegister, times_4, 0)); |
| 671 | break; |
| 672 | case 5: |
| 673 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_4, 0)); |
| 674 | break; |
| 675 | case 3: |
| 676 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_2, 0)); |
| 677 | break; |
| 678 | case 2: |
| 679 | lea(dst, Operand(kSmiConstantRegister, kSmiConstantRegister, times_1, 0)); |
| 680 | break; |
| 681 | case 1: |
| 682 | movq(dst, kSmiConstantRegister); |
| 683 | break; |
| 684 | case 0: |
| 685 | UNREACHABLE(); |
| 686 | return; |
| 687 | default: |
| 688 | movq(dst, reinterpret_cast<uint64_t>(source), RelocInfo::NONE); |
| 689 | return; |
| 690 | } |
| 691 | if (negative) { |
| 692 | neg(dst); |
| 693 | } |
| 694 | } |
| 695 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 696 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 697 | void MacroAssembler::Integer32ToSmi(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 698 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 699 | if (!dst.is(src)) { |
| 700 | movl(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 701 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 702 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 706 | void MacroAssembler::Integer32ToSmiField(const Operand& dst, Register src) { |
| 707 | if (FLAG_debug_code) { |
| 708 | testb(dst, Immediate(0x01)); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 709 | NearLabel ok; |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 710 | j(zero, &ok); |
| 711 | if (allow_stub_calls()) { |
| 712 | Abort("Integer32ToSmiField writing to non-smi location"); |
| 713 | } else { |
| 714 | int3(); |
| 715 | } |
| 716 | bind(&ok); |
| 717 | } |
| 718 | ASSERT(kSmiShift % kBitsPerByte == 0); |
| 719 | movl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 720 | } |
| 721 | |
| 722 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 723 | void MacroAssembler::Integer64PlusConstantToSmi(Register dst, |
| 724 | Register src, |
| 725 | int constant) { |
| 726 | if (dst.is(src)) { |
| 727 | addq(dst, Immediate(constant)); |
| 728 | } else { |
| 729 | lea(dst, Operand(src, constant)); |
| 730 | } |
| 731 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 732 | } |
| 733 | |
| 734 | |
| 735 | void MacroAssembler::SmiToInteger32(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 736 | ASSERT_EQ(0, kSmiTag); |
| 737 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 738 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 739 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 740 | shr(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 741 | } |
| 742 | |
| 743 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 744 | void MacroAssembler::SmiToInteger32(Register dst, const Operand& src) { |
| 745 | movl(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 746 | } |
| 747 | |
| 748 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 749 | void MacroAssembler::SmiToInteger64(Register dst, Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 750 | ASSERT_EQ(0, kSmiTag); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 751 | if (!dst.is(src)) { |
| 752 | movq(dst, src); |
| 753 | } |
| 754 | sar(dst, Immediate(kSmiShift)); |
| 755 | } |
| 756 | |
| 757 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 758 | void MacroAssembler::SmiToInteger64(Register dst, const Operand& src) { |
| 759 | movsxlq(dst, Operand(src, kSmiShift / kBitsPerByte)); |
| 760 | } |
| 761 | |
| 762 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 763 | void MacroAssembler::SmiTest(Register src) { |
| 764 | testq(src, src); |
| 765 | } |
| 766 | |
| 767 | |
| 768 | void MacroAssembler::SmiCompare(Register dst, Register src) { |
| 769 | cmpq(dst, src); |
| 770 | } |
| 771 | |
| 772 | |
| 773 | void MacroAssembler::SmiCompare(Register dst, Smi* src) { |
| 774 | ASSERT(!dst.is(kScratchRegister)); |
| 775 | if (src->value() == 0) { |
| 776 | testq(dst, dst); |
| 777 | } else { |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 778 | Register constant_reg = GetSmiConstant(src); |
| 779 | cmpq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 780 | } |
| 781 | } |
| 782 | |
| 783 | |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 784 | void MacroAssembler::SmiCompare(Register dst, const Operand& src) { |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 785 | cmpq(dst, src); |
| 786 | } |
| 787 | |
| 788 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 789 | void MacroAssembler::SmiCompare(const Operand& dst, Register src) { |
| 790 | cmpq(dst, src); |
| 791 | } |
| 792 | |
| 793 | |
| 794 | void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 795 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(src->value())); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 799 | void MacroAssembler::SmiCompareInteger32(const Operand& dst, Register src) { |
| 800 | cmpl(Operand(dst, kSmiShift / kBitsPerByte), src); |
| 801 | } |
| 802 | |
| 803 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 804 | void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst, |
| 805 | Register src, |
| 806 | int power) { |
| 807 | ASSERT(power >= 0); |
| 808 | ASSERT(power < 64); |
| 809 | if (power == 0) { |
| 810 | SmiToInteger64(dst, src); |
| 811 | return; |
| 812 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 813 | if (!dst.is(src)) { |
| 814 | movq(dst, src); |
| 815 | } |
| 816 | if (power < kSmiShift) { |
| 817 | sar(dst, Immediate(kSmiShift - power)); |
| 818 | } else if (power > kSmiShift) { |
| 819 | shl(dst, Immediate(power - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 820 | } |
| 821 | } |
| 822 | |
| 823 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 824 | void MacroAssembler::PositiveSmiDivPowerOfTwoToInteger32(Register dst, |
| 825 | Register src, |
| 826 | int power) { |
| 827 | ASSERT((0 <= power) && (power < 32)); |
| 828 | if (dst.is(src)) { |
| 829 | shr(dst, Immediate(power + kSmiShift)); |
| 830 | } else { |
| 831 | UNIMPLEMENTED(); // Not used. |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 836 | Condition MacroAssembler::CheckSmi(Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 837 | ASSERT_EQ(0, kSmiTag); |
| 838 | testb(src, Immediate(kSmiTagMask)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 839 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 840 | } |
| 841 | |
| 842 | |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 843 | Condition MacroAssembler::CheckNonNegativeSmi(Register src) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 844 | ASSERT_EQ(0, kSmiTag); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 845 | // 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] | 846 | movq(kScratchRegister, src); |
| 847 | rol(kScratchRegister, Immediate(1)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 848 | testb(kScratchRegister, Immediate(3)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 849 | return zero; |
| 850 | } |
| 851 | |
| 852 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 853 | Condition MacroAssembler::CheckBothSmi(Register first, Register second) { |
| 854 | if (first.is(second)) { |
| 855 | return CheckSmi(first); |
| 856 | } |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 857 | ASSERT(kSmiTag == 0 && kHeapObjectTag == 1 && kHeapObjectTagMask == 3); |
| 858 | leal(kScratchRegister, Operand(first, second, times_1, 0)); |
| 859 | testb(kScratchRegister, Immediate(0x03)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 860 | return zero; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 861 | } |
| 862 | |
| 863 | |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 864 | Condition MacroAssembler::CheckBothNonNegativeSmi(Register first, |
| 865 | Register second) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 866 | if (first.is(second)) { |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 867 | return CheckNonNegativeSmi(first); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 868 | } |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 869 | movq(kScratchRegister, first); |
| 870 | or_(kScratchRegister, second); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 871 | rol(kScratchRegister, Immediate(1)); |
ricow@chromium.org | eb7c144 | 2010-10-04 08:54:21 +0000 | [diff] [blame] | 872 | testl(kScratchRegister, Immediate(3)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 873 | return zero; |
| 874 | } |
| 875 | |
| 876 | |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 877 | Condition MacroAssembler::CheckEitherSmi(Register first, |
| 878 | Register second, |
| 879 | Register scratch) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 880 | if (first.is(second)) { |
| 881 | return CheckSmi(first); |
| 882 | } |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 883 | if (scratch.is(second)) { |
| 884 | andl(scratch, first); |
| 885 | } else { |
| 886 | if (!scratch.is(first)) { |
| 887 | movl(scratch, first); |
| 888 | } |
| 889 | andl(scratch, second); |
| 890 | } |
| 891 | testb(scratch, Immediate(kSmiTagMask)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 892 | return zero; |
| 893 | } |
| 894 | |
| 895 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 896 | Condition MacroAssembler::CheckIsMinSmi(Register src) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 897 | ASSERT(!src.is(kScratchRegister)); |
| 898 | // If we overflow by subtracting one, it's the minimal smi value. |
| 899 | cmpq(src, kSmiConstantRegister); |
| 900 | return overflow; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 901 | } |
| 902 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 903 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 904 | Condition MacroAssembler::CheckInteger32ValidSmiValue(Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 905 | // A 32-bit integer value can always be converted to a smi. |
| 906 | return always; |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 910 | Condition MacroAssembler::CheckUInteger32ValidSmiValue(Register src) { |
| 911 | // An unsigned 32-bit integer value is valid as long as the high bit |
| 912 | // is not set. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 913 | testl(src, src); |
| 914 | return positive; |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 915 | } |
| 916 | |
| 917 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 918 | void MacroAssembler::SmiAddConstant(Register dst, Register src, Smi* constant) { |
| 919 | if (constant->value() == 0) { |
| 920 | if (!dst.is(src)) { |
| 921 | movq(dst, src); |
| 922 | } |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 923 | return; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 924 | } else if (dst.is(src)) { |
| 925 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 926 | switch (constant->value()) { |
| 927 | case 1: |
| 928 | addq(dst, kSmiConstantRegister); |
| 929 | return; |
| 930 | case 2: |
| 931 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 932 | return; |
| 933 | case 4: |
| 934 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 935 | return; |
| 936 | case 8: |
| 937 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 938 | return; |
| 939 | default: |
| 940 | Register constant_reg = GetSmiConstant(constant); |
| 941 | addq(dst, constant_reg); |
| 942 | return; |
| 943 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 944 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 945 | switch (constant->value()) { |
| 946 | case 1: |
| 947 | lea(dst, Operand(src, kSmiConstantRegister, times_1, 0)); |
| 948 | return; |
| 949 | case 2: |
| 950 | lea(dst, Operand(src, kSmiConstantRegister, times_2, 0)); |
| 951 | return; |
| 952 | case 4: |
| 953 | lea(dst, Operand(src, kSmiConstantRegister, times_4, 0)); |
| 954 | return; |
| 955 | case 8: |
| 956 | lea(dst, Operand(src, kSmiConstantRegister, times_8, 0)); |
| 957 | return; |
| 958 | default: |
| 959 | LoadSmiConstant(dst, constant); |
| 960 | addq(dst, src); |
| 961 | return; |
| 962 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 963 | } |
| 964 | } |
| 965 | |
| 966 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 967 | void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) { |
| 968 | if (constant->value() != 0) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 969 | addl(Operand(dst, kSmiShift / kBitsPerByte), Immediate(constant->value())); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 970 | } |
| 971 | } |
| 972 | |
| 973 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 974 | void MacroAssembler::SmiSubConstant(Register dst, Register src, Smi* constant) { |
| 975 | if (constant->value() == 0) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 976 | if (!dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 977 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 978 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 979 | } else if (dst.is(src)) { |
| 980 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 981 | Register constant_reg = GetSmiConstant(constant); |
| 982 | subq(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 983 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 984 | if (constant->value() == Smi::kMinValue) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 985 | LoadSmiConstant(dst, constant); |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 986 | // Adding and subtracting the min-value gives the same result, it only |
| 987 | // differs on the overflow bit, which we don't check here. |
| 988 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 989 | } else { |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 990 | // Subtract by adding the negation. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 991 | LoadSmiConstant(dst, Smi::FromInt(-constant->value())); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 992 | addq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 993 | } |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 998 | void MacroAssembler::SmiAdd(Register dst, |
| 999 | Register src1, |
| 1000 | Register src2) { |
| 1001 | // No overflow checking. Use only when it's known that |
| 1002 | // overflowing is impossible. |
| 1003 | ASSERT(!dst.is(src2)); |
| 1004 | if (dst.is(src1)) { |
| 1005 | addq(dst, src2); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1006 | } else { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1007 | movq(dst, src1); |
| 1008 | addq(dst, src2); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1009 | } |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1010 | Assert(no_overflow, "Smi addition overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1014 | void MacroAssembler::SmiSub(Register dst, Register src1, Register src2) { |
| 1015 | // No overflow checking. Use only when it's known that |
| 1016 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1017 | ASSERT(!dst.is(src2)); |
| 1018 | if (dst.is(src1)) { |
| 1019 | subq(dst, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1020 | } else { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1021 | movq(dst, src1); |
| 1022 | subq(dst, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1023 | } |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1024 | Assert(no_overflow, "Smi subtraction overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1025 | } |
| 1026 | |
| 1027 | |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1028 | void MacroAssembler::SmiSub(Register dst, |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1029 | Register src1, |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1030 | const Operand& src2) { |
| 1031 | // No overflow checking. Use only when it's known that |
| 1032 | // overflowing is impossible (e.g., subtracting two positive smis). |
| 1033 | if (dst.is(src1)) { |
| 1034 | subq(dst, src2); |
| 1035 | } else { |
| 1036 | movq(dst, src1); |
| 1037 | subq(dst, src2); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1038 | } |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1039 | Assert(no_overflow, "Smi subtraction overflow"); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1040 | } |
| 1041 | |
| 1042 | |
| 1043 | void MacroAssembler::SmiNot(Register dst, Register src) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1044 | ASSERT(!dst.is(kScratchRegister)); |
| 1045 | ASSERT(!src.is(kScratchRegister)); |
| 1046 | // Set tag and padding bits before negating, so that they are zero afterwards. |
| 1047 | movl(kScratchRegister, Immediate(~0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1048 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1049 | xor_(dst, kScratchRegister); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1050 | } else { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1051 | lea(dst, Operand(src, kScratchRegister, times_1, 0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1052 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1053 | not_(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1054 | } |
| 1055 | |
| 1056 | |
| 1057 | void MacroAssembler::SmiAnd(Register dst, Register src1, Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1058 | ASSERT(!dst.is(src2)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1059 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1060 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1061 | } |
| 1062 | and_(dst, src2); |
| 1063 | } |
| 1064 | |
| 1065 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1066 | void MacroAssembler::SmiAndConstant(Register dst, Register src, Smi* constant) { |
| 1067 | if (constant->value() == 0) { |
| 1068 | xor_(dst, dst); |
| 1069 | } else if (dst.is(src)) { |
| 1070 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1071 | Register constant_reg = GetSmiConstant(constant); |
| 1072 | and_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1073 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1074 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1075 | and_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1076 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1077 | } |
| 1078 | |
| 1079 | |
| 1080 | void MacroAssembler::SmiOr(Register dst, Register src1, Register src2) { |
| 1081 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1082 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1083 | } |
| 1084 | or_(dst, src2); |
| 1085 | } |
| 1086 | |
| 1087 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1088 | void MacroAssembler::SmiOrConstant(Register dst, Register src, Smi* constant) { |
| 1089 | if (dst.is(src)) { |
| 1090 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1091 | Register constant_reg = GetSmiConstant(constant); |
| 1092 | or_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1093 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1094 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1095 | or_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1096 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1097 | } |
| 1098 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1099 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1100 | void MacroAssembler::SmiXor(Register dst, Register src1, Register src2) { |
| 1101 | if (!dst.is(src1)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1102 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1103 | } |
| 1104 | xor_(dst, src2); |
| 1105 | } |
| 1106 | |
| 1107 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1108 | void MacroAssembler::SmiXorConstant(Register dst, Register src, Smi* constant) { |
| 1109 | if (dst.is(src)) { |
| 1110 | ASSERT(!dst.is(kScratchRegister)); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1111 | Register constant_reg = GetSmiConstant(constant); |
| 1112 | xor_(dst, constant_reg); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1113 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1114 | LoadSmiConstant(dst, constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1115 | xor_(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1116 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1120 | void MacroAssembler::SmiShiftArithmeticRightConstant(Register dst, |
| 1121 | Register src, |
| 1122 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1123 | ASSERT(is_uint5(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1124 | if (shift_value > 0) { |
| 1125 | if (dst.is(src)) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1126 | sar(dst, Immediate(shift_value + kSmiShift)); |
| 1127 | shl(dst, Immediate(kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1128 | } else { |
| 1129 | UNIMPLEMENTED(); // Not used. |
| 1130 | } |
| 1131 | } |
| 1132 | } |
| 1133 | |
| 1134 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1135 | void MacroAssembler::SmiShiftLeftConstant(Register dst, |
| 1136 | Register src, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1137 | int shift_value) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1138 | if (!dst.is(src)) { |
| 1139 | movq(dst, src); |
| 1140 | } |
| 1141 | if (shift_value > 0) { |
| 1142 | shl(dst, Immediate(shift_value)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1143 | } |
| 1144 | } |
| 1145 | |
| 1146 | |
| 1147 | void MacroAssembler::SmiShiftLeft(Register dst, |
| 1148 | Register src1, |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1149 | Register src2) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1150 | ASSERT(!dst.is(rcx)); |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1151 | NearLabel result_ok; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1152 | // Untag shift amount. |
| 1153 | if (!dst.is(src1)) { |
| 1154 | movq(dst, src1); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1155 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1156 | SmiToInteger32(rcx, src2); |
| 1157 | // Shift amount specified by lower 5 bits, not six as the shl opcode. |
| 1158 | and_(rcx, Immediate(0x1f)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1159 | shl_cl(dst); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1163 | void MacroAssembler::SmiShiftArithmeticRight(Register dst, |
| 1164 | Register src1, |
| 1165 | Register src2) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1166 | ASSERT(!dst.is(kScratchRegister)); |
| 1167 | ASSERT(!src1.is(kScratchRegister)); |
| 1168 | ASSERT(!src2.is(kScratchRegister)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1169 | ASSERT(!dst.is(rcx)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1170 | if (src1.is(rcx)) { |
| 1171 | movq(kScratchRegister, src1); |
| 1172 | } else if (src2.is(rcx)) { |
| 1173 | movq(kScratchRegister, src2); |
| 1174 | } |
| 1175 | if (!dst.is(src1)) { |
| 1176 | movq(dst, src1); |
| 1177 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1178 | SmiToInteger32(rcx, src2); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1179 | orl(rcx, Immediate(kSmiShift)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 1180 | sar_cl(dst); // Shift 32 + original rcx & 0x1f. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1181 | shl(dst, Immediate(kSmiShift)); |
| 1182 | if (src1.is(rcx)) { |
| 1183 | movq(src1, kScratchRegister); |
| 1184 | } else if (src2.is(rcx)) { |
| 1185 | movq(src2, kScratchRegister); |
| 1186 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1187 | } |
| 1188 | |
| 1189 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1190 | SmiIndex MacroAssembler::SmiToIndex(Register dst, |
| 1191 | Register src, |
| 1192 | int shift) { |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1193 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1194 | // There is a possible optimization if shift is in the range 60-63, but that |
| 1195 | // will (and must) never happen. |
| 1196 | if (!dst.is(src)) { |
| 1197 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1198 | } |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1199 | if (shift < kSmiShift) { |
| 1200 | sar(dst, Immediate(kSmiShift - shift)); |
| 1201 | } else { |
| 1202 | shl(dst, Immediate(shift - kSmiShift)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1203 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1204 | return SmiIndex(dst, times_1); |
| 1205 | } |
| 1206 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1207 | SmiIndex MacroAssembler::SmiToNegativeIndex(Register dst, |
| 1208 | Register src, |
| 1209 | int shift) { |
| 1210 | // Register src holds a positive smi. |
| 1211 | ASSERT(is_uint6(shift)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1212 | if (!dst.is(src)) { |
| 1213 | movq(dst, src); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1214 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1215 | neg(dst); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1216 | if (shift < kSmiShift) { |
| 1217 | sar(dst, Immediate(kSmiShift - shift)); |
| 1218 | } else { |
| 1219 | shl(dst, Immediate(shift - kSmiShift)); |
| 1220 | } |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1221 | return SmiIndex(dst, times_1); |
| 1222 | } |
| 1223 | |
| 1224 | |
whesse@chromium.org | 4a1fe7d | 2010-09-27 12:32:04 +0000 | [diff] [blame] | 1225 | void MacroAssembler::Move(Register dst, Register src) { |
| 1226 | if (!dst.is(src)) { |
| 1227 | movq(dst, src); |
| 1228 | } |
| 1229 | } |
| 1230 | |
| 1231 | |
| 1232 | |
| 1233 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1234 | void MacroAssembler::Move(Register dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1235 | ASSERT(!source->IsFailure()); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1236 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1237 | Move(dst, Smi::cast(*source)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1238 | } else { |
| 1239 | movq(dst, source, RelocInfo::EMBEDDED_OBJECT); |
| 1240 | } |
| 1241 | } |
| 1242 | |
| 1243 | |
| 1244 | void MacroAssembler::Move(const Operand& dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1245 | ASSERT(!source->IsFailure()); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1246 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1247 | Move(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1248 | } else { |
| 1249 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1250 | movq(dst, kScratchRegister); |
| 1251 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1252 | } |
| 1253 | |
| 1254 | |
| 1255 | void MacroAssembler::Cmp(Register dst, Handle<Object> source) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1256 | if (source->IsSmi()) { |
| 1257 | SmiCompare(dst, Smi::cast(*source)); |
| 1258 | } else { |
| 1259 | Move(kScratchRegister, source); |
| 1260 | cmpq(dst, kScratchRegister); |
| 1261 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1265 | void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1266 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1267 | SmiCompare(dst, Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1268 | } else { |
| 1269 | ASSERT(source->IsHeapObject()); |
| 1270 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1271 | cmpq(dst, kScratchRegister); |
| 1272 | } |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1273 | } |
| 1274 | |
| 1275 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1276 | void MacroAssembler::Push(Handle<Object> source) { |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1277 | if (source->IsSmi()) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1278 | Push(Smi::cast(*source)); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 1279 | } else { |
| 1280 | ASSERT(source->IsHeapObject()); |
| 1281 | movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT); |
| 1282 | push(kScratchRegister); |
| 1283 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1284 | } |
| 1285 | |
| 1286 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1287 | void MacroAssembler::Push(Smi* source) { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1288 | intptr_t smi = reinterpret_cast<intptr_t>(source); |
| 1289 | if (is_int32(smi)) { |
| 1290 | push(Immediate(static_cast<int32_t>(smi))); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1291 | } else { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1292 | Register constant = GetSmiConstant(source); |
| 1293 | push(constant); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1294 | } |
| 1295 | } |
| 1296 | |
| 1297 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 1298 | void MacroAssembler::Drop(int stack_elements) { |
| 1299 | if (stack_elements > 0) { |
| 1300 | addq(rsp, Immediate(stack_elements * kPointerSize)); |
| 1301 | } |
| 1302 | } |
| 1303 | |
| 1304 | |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1305 | void MacroAssembler::Test(const Operand& src, Smi* source) { |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 1306 | testl(Operand(src, kIntSize), Immediate(source->value())); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1307 | } |
| 1308 | |
| 1309 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1310 | void MacroAssembler::Jump(ExternalReference ext) { |
| 1311 | movq(kScratchRegister, ext); |
| 1312 | jmp(kScratchRegister); |
| 1313 | } |
| 1314 | |
| 1315 | |
| 1316 | void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) { |
| 1317 | movq(kScratchRegister, destination, rmode); |
| 1318 | jmp(kScratchRegister); |
| 1319 | } |
| 1320 | |
| 1321 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1322 | void MacroAssembler::Jump(Handle<Code> code_object, RelocInfo::Mode rmode) { |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1323 | // TODO(X64): Inline this |
| 1324 | jmp(code_object, rmode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1325 | } |
| 1326 | |
| 1327 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1328 | void MacroAssembler::Call(ExternalReference ext) { |
| 1329 | movq(kScratchRegister, ext); |
| 1330 | call(kScratchRegister); |
| 1331 | } |
| 1332 | |
| 1333 | |
| 1334 | void MacroAssembler::Call(Address destination, RelocInfo::Mode rmode) { |
| 1335 | movq(kScratchRegister, destination, rmode); |
| 1336 | call(kScratchRegister); |
| 1337 | } |
| 1338 | |
| 1339 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1340 | void MacroAssembler::Call(Handle<Code> code_object, RelocInfo::Mode rmode) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1341 | ASSERT(RelocInfo::IsCodeTarget(rmode)); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1342 | call(code_object, rmode); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1343 | } |
| 1344 | |
| 1345 | |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1346 | void MacroAssembler::PushTryHandler(CodeLocation try_location, |
| 1347 | HandlerType type) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1348 | // Adjust this code if not the case. |
| 1349 | ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize); |
| 1350 | |
| 1351 | // The pc (return address) is already on TOS. This code pushes state, |
| 1352 | // frame pointer and current handler. Check that they are expected |
| 1353 | // next on the stack, in that order. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1354 | ASSERT_EQ(StackHandlerConstants::kStateOffset, |
| 1355 | StackHandlerConstants::kPCOffset - kPointerSize); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1356 | ASSERT_EQ(StackHandlerConstants::kFPOffset, |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1357 | StackHandlerConstants::kStateOffset - kPointerSize); |
| 1358 | ASSERT_EQ(StackHandlerConstants::kNextOffset, |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1359 | StackHandlerConstants::kFPOffset - kPointerSize); |
| 1360 | |
| 1361 | if (try_location == IN_JAVASCRIPT) { |
| 1362 | if (type == TRY_CATCH_HANDLER) { |
| 1363 | push(Immediate(StackHandler::TRY_CATCH)); |
| 1364 | } else { |
| 1365 | push(Immediate(StackHandler::TRY_FINALLY)); |
| 1366 | } |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1367 | push(rbp); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1368 | } else { |
| 1369 | ASSERT(try_location == IN_JS_ENTRY); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1370 | // The frame pointer does not point to a JS frame so we save NULL |
| 1371 | // for rbp. We expect the code throwing an exception to check rbp |
| 1372 | // before dereferencing it to restore the context. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1373 | push(Immediate(StackHandler::ENTRY)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1374 | push(Immediate(0)); // NULL frame pointer. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1375 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1376 | // Save the current handler. |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1377 | movq(kScratchRegister, ExternalReference(Top::k_handler_address)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1378 | push(Operand(kScratchRegister, 0)); |
ager@chromium.org | e2902be | 2009-06-08 12:21:35 +0000 | [diff] [blame] | 1379 | // Link this handler. |
| 1380 | movq(Operand(kScratchRegister, 0), rsp); |
| 1381 | } |
| 1382 | |
| 1383 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 1384 | void MacroAssembler::PopTryHandler() { |
| 1385 | ASSERT_EQ(0, StackHandlerConstants::kNextOffset); |
| 1386 | // Unlink this handler. |
| 1387 | movq(kScratchRegister, ExternalReference(Top::k_handler_address)); |
| 1388 | pop(Operand(kScratchRegister, 0)); |
| 1389 | // Remove the remaining fields. |
| 1390 | addq(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize)); |
| 1391 | } |
| 1392 | |
| 1393 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1394 | void MacroAssembler::Ret() { |
| 1395 | ret(0); |
| 1396 | } |
| 1397 | |
| 1398 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1399 | void MacroAssembler::FCmp() { |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1400 | fucomip(); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 1401 | fstp(0); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1402 | } |
| 1403 | |
| 1404 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1405 | void MacroAssembler::CmpObjectType(Register heap_object, |
| 1406 | InstanceType type, |
| 1407 | Register map) { |
| 1408 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 1409 | CmpInstanceType(map, type); |
| 1410 | } |
| 1411 | |
| 1412 | |
| 1413 | void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
| 1414 | cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
| 1415 | Immediate(static_cast<int8_t>(type))); |
| 1416 | } |
| 1417 | |
| 1418 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1419 | void MacroAssembler::CheckMap(Register obj, |
| 1420 | Handle<Map> map, |
| 1421 | Label* fail, |
| 1422 | bool is_heap_object) { |
| 1423 | if (!is_heap_object) { |
| 1424 | JumpIfSmi(obj, fail); |
| 1425 | } |
| 1426 | Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
| 1427 | j(not_equal, fail); |
| 1428 | } |
| 1429 | |
| 1430 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1431 | void MacroAssembler::AbortIfNotNumber(Register object) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1432 | NearLabel ok; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1433 | Condition is_smi = CheckSmi(object); |
| 1434 | j(is_smi, &ok); |
| 1435 | Cmp(FieldOperand(object, HeapObject::kMapOffset), |
| 1436 | Factory::heap_number_map()); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1437 | Assert(equal, "Operand not a number"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1438 | bind(&ok); |
| 1439 | } |
| 1440 | |
| 1441 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 1442 | void MacroAssembler::AbortIfSmi(Register object) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1443 | NearLabel ok; |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 1444 | Condition is_smi = CheckSmi(object); |
| 1445 | Assert(NegateCondition(is_smi), "Operand is a smi"); |
| 1446 | } |
| 1447 | |
| 1448 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1449 | void MacroAssembler::AbortIfNotSmi(Register object) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1450 | NearLabel ok; |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 1451 | Condition is_smi = CheckSmi(object); |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame] | 1452 | Assert(is_smi, "Operand is not a smi"); |
lrn@chromium.org | 25156de | 2010-04-06 13:10:27 +0000 | [diff] [blame] | 1453 | } |
| 1454 | |
| 1455 | |
ricow@chromium.org | 5ad5ace | 2010-06-23 09:06:43 +0000 | [diff] [blame] | 1456 | void MacroAssembler::AbortIfNotRootValue(Register src, |
| 1457 | Heap::RootListIndex root_value_index, |
| 1458 | const char* message) { |
| 1459 | ASSERT(!src.is(kScratchRegister)); |
| 1460 | LoadRoot(kScratchRegister, root_value_index); |
| 1461 | cmpq(src, kScratchRegister); |
| 1462 | Check(equal, message); |
| 1463 | } |
| 1464 | |
| 1465 | |
| 1466 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1467 | Condition MacroAssembler::IsObjectStringType(Register heap_object, |
| 1468 | Register map, |
| 1469 | Register instance_type) { |
| 1470 | movq(map, FieldOperand(heap_object, HeapObject::kMapOffset)); |
| 1471 | movzxbl(instance_type, FieldOperand(map, Map::kInstanceTypeOffset)); |
| 1472 | ASSERT(kNotStringTag != 0); |
| 1473 | testb(instance_type, Immediate(kIsNotStringMask)); |
| 1474 | return zero; |
| 1475 | } |
| 1476 | |
| 1477 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1478 | void MacroAssembler::TryGetFunctionPrototype(Register function, |
| 1479 | Register result, |
| 1480 | Label* miss) { |
| 1481 | // Check that the receiver isn't a smi. |
| 1482 | testl(function, Immediate(kSmiTagMask)); |
| 1483 | j(zero, miss); |
| 1484 | |
| 1485 | // Check that the function really is a function. |
| 1486 | CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 1487 | j(not_equal, miss); |
| 1488 | |
| 1489 | // Make sure that the function has an instance prototype. |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1490 | NearLabel non_instance; |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1491 | testb(FieldOperand(result, Map::kBitFieldOffset), |
| 1492 | Immediate(1 << Map::kHasNonInstancePrototype)); |
| 1493 | j(not_zero, &non_instance); |
| 1494 | |
| 1495 | // Get the prototype or initial map from the function. |
| 1496 | movq(result, |
| 1497 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1498 | |
| 1499 | // If the prototype or initial map is the hole, don't return it and |
| 1500 | // simply miss the cache instead. This will allow us to allocate a |
| 1501 | // prototype object on-demand in the runtime system. |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1502 | CompareRoot(result, Heap::kTheHoleValueRootIndex); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1503 | j(equal, miss); |
| 1504 | |
| 1505 | // If the function does not have an initial map, we're done. |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1506 | NearLabel done; |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1507 | CmpObjectType(result, MAP_TYPE, kScratchRegister); |
| 1508 | j(not_equal, &done); |
| 1509 | |
| 1510 | // Get the prototype from the initial map. |
| 1511 | movq(result, FieldOperand(result, Map::kPrototypeOffset)); |
| 1512 | jmp(&done); |
| 1513 | |
| 1514 | // Non-instance prototype: Fetch prototype from constructor field |
| 1515 | // in initial map. |
| 1516 | bind(&non_instance); |
| 1517 | movq(result, FieldOperand(result, Map::kConstructorOffset)); |
| 1518 | |
| 1519 | // All done. |
| 1520 | bind(&done); |
| 1521 | } |
| 1522 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1523 | |
| 1524 | void MacroAssembler::SetCounter(StatsCounter* counter, int value) { |
| 1525 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 1526 | movq(kScratchRegister, ExternalReference(counter)); |
| 1527 | movl(Operand(kScratchRegister, 0), Immediate(value)); |
| 1528 | } |
| 1529 | } |
| 1530 | |
| 1531 | |
| 1532 | void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) { |
| 1533 | ASSERT(value > 0); |
| 1534 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 1535 | movq(kScratchRegister, ExternalReference(counter)); |
| 1536 | Operand operand(kScratchRegister, 0); |
| 1537 | if (value == 1) { |
| 1538 | incl(operand); |
| 1539 | } else { |
| 1540 | addl(operand, Immediate(value)); |
| 1541 | } |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | |
| 1546 | void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) { |
| 1547 | ASSERT(value > 0); |
| 1548 | if (FLAG_native_code_counters && counter->Enabled()) { |
| 1549 | movq(kScratchRegister, ExternalReference(counter)); |
| 1550 | Operand operand(kScratchRegister, 0); |
| 1551 | if (value == 1) { |
| 1552 | decl(operand); |
| 1553 | } else { |
| 1554 | subl(operand, Immediate(value)); |
| 1555 | } |
| 1556 | } |
| 1557 | } |
| 1558 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1559 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1560 | #ifdef ENABLE_DEBUGGER_SUPPORT |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1561 | void MacroAssembler::DebugBreak() { |
| 1562 | ASSERT(allow_stub_calls()); |
| 1563 | xor_(rax, rax); // no arguments |
| 1564 | movq(rbx, ExternalReference(Runtime::kDebugBreak)); |
| 1565 | CEntryStub ces(1); |
| 1566 | Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1567 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1568 | #endif // ENABLE_DEBUGGER_SUPPORT |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1569 | |
| 1570 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1571 | void MacroAssembler::InvokeCode(Register code, |
| 1572 | const ParameterCount& expected, |
| 1573 | const ParameterCount& actual, |
| 1574 | InvokeFlag flag) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1575 | NearLabel done; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1576 | InvokePrologue(expected, actual, Handle<Code>::null(), code, &done, flag); |
| 1577 | if (flag == CALL_FUNCTION) { |
| 1578 | call(code); |
| 1579 | } else { |
| 1580 | ASSERT(flag == JUMP_FUNCTION); |
| 1581 | jmp(code); |
| 1582 | } |
| 1583 | bind(&done); |
| 1584 | } |
| 1585 | |
| 1586 | |
| 1587 | void MacroAssembler::InvokeCode(Handle<Code> code, |
| 1588 | const ParameterCount& expected, |
| 1589 | const ParameterCount& actual, |
| 1590 | RelocInfo::Mode rmode, |
| 1591 | InvokeFlag flag) { |
fschneider@chromium.org | c20610a | 2010-09-22 09:44:58 +0000 | [diff] [blame] | 1592 | NearLabel done; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1593 | Register dummy = rax; |
| 1594 | InvokePrologue(expected, actual, code, dummy, &done, flag); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1595 | if (flag == CALL_FUNCTION) { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1596 | Call(code, rmode); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1597 | } else { |
| 1598 | ASSERT(flag == JUMP_FUNCTION); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1599 | Jump(code, rmode); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1600 | } |
| 1601 | bind(&done); |
| 1602 | } |
| 1603 | |
| 1604 | |
| 1605 | void MacroAssembler::InvokeFunction(Register function, |
| 1606 | const ParameterCount& actual, |
| 1607 | InvokeFlag flag) { |
| 1608 | ASSERT(function.is(rdi)); |
| 1609 | movq(rdx, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 1610 | movq(rsi, FieldOperand(function, JSFunction::kContextOffset)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1611 | movsxlq(rbx, |
| 1612 | FieldOperand(rdx, SharedFunctionInfo::kFormalParameterCountOffset)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1613 | // 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] | 1614 | // the executable code. |
erik.corry@gmail.com | 145eff5 | 2010-08-23 11:36:18 +0000 | [diff] [blame] | 1615 | movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1616 | |
| 1617 | ParameterCount expected(rbx); |
| 1618 | InvokeCode(rdx, expected, actual, flag); |
| 1619 | } |
| 1620 | |
| 1621 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1622 | void MacroAssembler::InvokeFunction(JSFunction* function, |
| 1623 | const ParameterCount& actual, |
| 1624 | InvokeFlag flag) { |
| 1625 | ASSERT(function->is_compiled()); |
| 1626 | // Get the function and setup the context. |
| 1627 | Move(rdi, Handle<JSFunction>(function)); |
| 1628 | movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 1629 | |
| 1630 | // Invoke the cached code. |
| 1631 | Handle<Code> code(function->code()); |
| 1632 | ParameterCount expected(function->shared()->formal_parameter_count()); |
| 1633 | InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag); |
| 1634 | } |
| 1635 | |
| 1636 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1637 | void MacroAssembler::EnterFrame(StackFrame::Type type) { |
| 1638 | push(rbp); |
| 1639 | movq(rbp, rsp); |
| 1640 | push(rsi); // Context. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1641 | Push(Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1642 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 1643 | push(kScratchRegister); |
| 1644 | if (FLAG_debug_code) { |
| 1645 | movq(kScratchRegister, |
| 1646 | Factory::undefined_value(), |
| 1647 | RelocInfo::EMBEDDED_OBJECT); |
| 1648 | cmpq(Operand(rsp, 0), kScratchRegister); |
| 1649 | Check(not_equal, "code object not properly patched"); |
| 1650 | } |
| 1651 | } |
| 1652 | |
| 1653 | |
| 1654 | void MacroAssembler::LeaveFrame(StackFrame::Type type) { |
| 1655 | if (FLAG_debug_code) { |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1656 | Move(kScratchRegister, Smi::FromInt(type)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1657 | cmpq(Operand(rbp, StandardFrameConstants::kMarkerOffset), kScratchRegister); |
| 1658 | Check(equal, "stack frame types must match"); |
| 1659 | } |
| 1660 | movq(rsp, rbp); |
| 1661 | pop(rbp); |
| 1662 | } |
| 1663 | |
| 1664 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1665 | void MacroAssembler::EnterExitFramePrologue(bool save_rax) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1666 | // Setup the frame structure on the stack. |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1667 | // 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] | 1668 | ASSERT(ExitFrameConstants::kCallerSPDisplacement == +2 * kPointerSize); |
| 1669 | ASSERT(ExitFrameConstants::kCallerPCOffset == +1 * kPointerSize); |
| 1670 | ASSERT(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize); |
| 1671 | push(rbp); |
| 1672 | movq(rbp, rsp); |
| 1673 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1674 | // Reserve room for entry stack pointer and push the code object. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1675 | ASSERT(ExitFrameConstants::kSPOffset == -1 * kPointerSize); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1676 | push(Immediate(0)); // Saved entry sp, patched before call. |
| 1677 | movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT); |
| 1678 | push(kScratchRegister); // Accessed from EditFrame::code_slot. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1679 | |
| 1680 | // Save the frame pointer and the context in top. |
| 1681 | ExternalReference c_entry_fp_address(Top::k_c_entry_fp_address); |
| 1682 | ExternalReference context_address(Top::k_context_address); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1683 | if (save_rax) { |
| 1684 | movq(r14, rax); // Backup rax before we use it. |
| 1685 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1686 | |
| 1687 | movq(rax, rbp); |
| 1688 | store_rax(c_entry_fp_address); |
| 1689 | movq(rax, rsi); |
| 1690 | store_rax(context_address); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1691 | } |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1692 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1693 | void MacroAssembler::EnterExitFrameEpilogue(int result_size, |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1694 | int argc) { |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1695 | #ifdef _WIN64 |
| 1696 | // Reserve space on stack for result and argument structures, if necessary. |
| 1697 | int result_stack_space = (result_size < 2) ? 0 : result_size * kPointerSize; |
| 1698 | // Reserve space for the Arguments object. The Windows 64-bit ABI |
| 1699 | // requires us to pass this structure as a pointer to its location on |
| 1700 | // the stack. The structure contains 2 values. |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1701 | int argument_stack_space = argc * kPointerSize; |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1702 | // We also need backing space for 4 parameters, even though |
| 1703 | // we only pass one or two parameter, and it is in a register. |
| 1704 | int argument_mirror_space = 4 * kPointerSize; |
| 1705 | int total_stack_space = |
| 1706 | argument_mirror_space + argument_stack_space + result_stack_space; |
| 1707 | subq(rsp, Immediate(total_stack_space)); |
| 1708 | #endif |
| 1709 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1710 | // Get the required frame alignment for the OS. |
| 1711 | static const int kFrameAlignment = OS::ActivationFrameAlignment(); |
| 1712 | if (kFrameAlignment > 0) { |
| 1713 | ASSERT(IsPowerOf2(kFrameAlignment)); |
| 1714 | movq(kScratchRegister, Immediate(-kFrameAlignment)); |
| 1715 | and_(rsp, kScratchRegister); |
| 1716 | } |
| 1717 | |
| 1718 | // Patch the saved entry sp. |
| 1719 | movq(Operand(rbp, ExitFrameConstants::kSPOffset), rsp); |
| 1720 | } |
| 1721 | |
| 1722 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1723 | void MacroAssembler::EnterExitFrame(int result_size) { |
| 1724 | EnterExitFramePrologue(true); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1725 | |
| 1726 | // Setup argv in callee-saved register r12. It is reused in LeaveExitFrame, |
| 1727 | // so it must be retained across the C-call. |
| 1728 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
| 1729 | lea(r12, Operand(rbp, r14, times_pointer_size, offset)); |
| 1730 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1731 | EnterExitFrameEpilogue(result_size, 2); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1732 | } |
| 1733 | |
| 1734 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1735 | void MacroAssembler::EnterApiExitFrame(int stack_space, |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1736 | int argc, |
| 1737 | int result_size) { |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1738 | EnterExitFramePrologue(false); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1739 | |
| 1740 | // Setup argv in callee-saved register r12. It is reused in LeaveExitFrame, |
| 1741 | // so it must be retained across the C-call. |
| 1742 | int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize; |
| 1743 | lea(r12, Operand(rbp, (stack_space * kPointerSize) + offset)); |
| 1744 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1745 | EnterExitFrameEpilogue(result_size, argc); |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 1746 | } |
| 1747 | |
| 1748 | |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 1749 | void MacroAssembler::LeaveExitFrame(int result_size) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1750 | // Registers: |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1751 | // r12 : argv |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1752 | |
| 1753 | // Get the return address from the stack and restore the frame pointer. |
| 1754 | movq(rcx, Operand(rbp, 1 * kPointerSize)); |
| 1755 | movq(rbp, Operand(rbp, 0 * kPointerSize)); |
| 1756 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1757 | // Pop everything up to and including the arguments and the receiver |
| 1758 | // from the caller stack. |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1759 | lea(rsp, Operand(r12, 1 * kPointerSize)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1760 | |
| 1761 | // Restore current context from top and clear it in debug mode. |
| 1762 | ExternalReference context_address(Top::k_context_address); |
| 1763 | movq(kScratchRegister, context_address); |
| 1764 | movq(rsi, Operand(kScratchRegister, 0)); |
| 1765 | #ifdef DEBUG |
| 1766 | movq(Operand(kScratchRegister, 0), Immediate(0)); |
| 1767 | #endif |
| 1768 | |
| 1769 | // Push the return address to get ready to return. |
| 1770 | push(rcx); |
| 1771 | |
| 1772 | // Clear the top frame. |
| 1773 | ExternalReference c_entry_fp_address(Top::k_c_entry_fp_address); |
| 1774 | movq(kScratchRegister, c_entry_fp_address); |
| 1775 | movq(Operand(kScratchRegister, 0), Immediate(0)); |
| 1776 | } |
| 1777 | |
| 1778 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1779 | void MacroAssembler::CheckAccessGlobalProxy(Register holder_reg, |
| 1780 | Register scratch, |
| 1781 | Label* miss) { |
| 1782 | Label same_contexts; |
| 1783 | |
| 1784 | ASSERT(!holder_reg.is(scratch)); |
| 1785 | ASSERT(!scratch.is(kScratchRegister)); |
| 1786 | // Load current lexical context from the stack frame. |
| 1787 | movq(scratch, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 1788 | |
| 1789 | // When generating debug code, make sure the lexical context is set. |
| 1790 | if (FLAG_debug_code) { |
| 1791 | cmpq(scratch, Immediate(0)); |
| 1792 | Check(not_equal, "we should not have an empty lexical context"); |
| 1793 | } |
| 1794 | // Load the global context of the current context. |
| 1795 | int offset = Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 1796 | movq(scratch, FieldOperand(scratch, offset)); |
| 1797 | movq(scratch, FieldOperand(scratch, GlobalObject::kGlobalContextOffset)); |
| 1798 | |
| 1799 | // Check the context is a global context. |
| 1800 | if (FLAG_debug_code) { |
| 1801 | Cmp(FieldOperand(scratch, HeapObject::kMapOffset), |
| 1802 | Factory::global_context_map()); |
| 1803 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 1804 | } |
| 1805 | |
| 1806 | // Check if both contexts are the same. |
| 1807 | cmpq(scratch, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
| 1808 | j(equal, &same_contexts); |
| 1809 | |
| 1810 | // Compare security tokens. |
| 1811 | // Check that the security token in the calling global object is |
| 1812 | // compatible with the security token in the receiving global |
| 1813 | // object. |
| 1814 | |
| 1815 | // Check the context is a global context. |
| 1816 | if (FLAG_debug_code) { |
| 1817 | // Preserve original value of holder_reg. |
| 1818 | push(holder_reg); |
| 1819 | movq(holder_reg, FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1820 | CompareRoot(holder_reg, Heap::kNullValueRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1821 | Check(not_equal, "JSGlobalProxy::context() should not be null."); |
| 1822 | |
| 1823 | // Read the first word and compare to global_context_map(), |
| 1824 | movq(holder_reg, FieldOperand(holder_reg, HeapObject::kMapOffset)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1825 | CompareRoot(holder_reg, Heap::kGlobalContextMapRootIndex); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1826 | Check(equal, "JSGlobalObject::global_context should be a global context."); |
| 1827 | pop(holder_reg); |
| 1828 | } |
| 1829 | |
| 1830 | movq(kScratchRegister, |
| 1831 | FieldOperand(holder_reg, JSGlobalProxy::kContextOffset)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1832 | int token_offset = |
| 1833 | Context::kHeaderSize + Context::SECURITY_TOKEN_INDEX * kPointerSize; |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1834 | movq(scratch, FieldOperand(scratch, token_offset)); |
| 1835 | cmpq(scratch, FieldOperand(kScratchRegister, token_offset)); |
| 1836 | j(not_equal, miss); |
| 1837 | |
| 1838 | bind(&same_contexts); |
| 1839 | } |
| 1840 | |
| 1841 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1842 | void MacroAssembler::LoadAllocationTopHelper(Register result, |
| 1843 | Register result_end, |
| 1844 | Register scratch, |
| 1845 | AllocationFlags flags) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1846 | ExternalReference new_space_allocation_top = |
| 1847 | ExternalReference::new_space_allocation_top_address(); |
| 1848 | |
| 1849 | // Just return if allocation top is already known. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1850 | if ((flags & RESULT_CONTAINS_TOP) != 0) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1851 | // No use of scratch if allocation top is provided. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1852 | ASSERT(!scratch.is_valid()); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1853 | #ifdef DEBUG |
| 1854 | // Assert that result actually contains top on entry. |
| 1855 | movq(kScratchRegister, new_space_allocation_top); |
| 1856 | cmpq(result, Operand(kScratchRegister, 0)); |
| 1857 | Check(equal, "Unexpected allocation top"); |
| 1858 | #endif |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1859 | return; |
| 1860 | } |
| 1861 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1862 | // Move address of new object to result. Use scratch register if available, |
| 1863 | // and keep address in scratch until call to UpdateAllocationTopHelper. |
| 1864 | if (scratch.is_valid()) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1865 | ASSERT(!scratch.is(result_end)); |
| 1866 | movq(scratch, new_space_allocation_top); |
| 1867 | movq(result, Operand(scratch, 0)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1868 | } else if (result.is(rax)) { |
| 1869 | load_rax(new_space_allocation_top); |
| 1870 | } else { |
| 1871 | movq(kScratchRegister, new_space_allocation_top); |
| 1872 | movq(result, Operand(kScratchRegister, 0)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1873 | } |
| 1874 | } |
| 1875 | |
| 1876 | |
| 1877 | void MacroAssembler::UpdateAllocationTopHelper(Register result_end, |
| 1878 | Register scratch) { |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 1879 | if (FLAG_debug_code) { |
| 1880 | testq(result_end, Immediate(kObjectAlignmentMask)); |
| 1881 | Check(zero, "Unaligned allocation in new space"); |
| 1882 | } |
| 1883 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1884 | ExternalReference new_space_allocation_top = |
| 1885 | ExternalReference::new_space_allocation_top_address(); |
| 1886 | |
| 1887 | // Update new top. |
| 1888 | if (result_end.is(rax)) { |
| 1889 | // rax can be stored directly to a memory location. |
| 1890 | store_rax(new_space_allocation_top); |
| 1891 | } else { |
| 1892 | // Register required - use scratch provided if available. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1893 | if (scratch.is_valid()) { |
| 1894 | movq(Operand(scratch, 0), result_end); |
| 1895 | } else { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1896 | movq(kScratchRegister, new_space_allocation_top); |
| 1897 | movq(Operand(kScratchRegister, 0), result_end); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1898 | } |
| 1899 | } |
| 1900 | } |
| 1901 | |
| 1902 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1903 | void MacroAssembler::AllocateInNewSpace(int object_size, |
| 1904 | Register result, |
| 1905 | Register result_end, |
| 1906 | Register scratch, |
| 1907 | Label* gc_required, |
| 1908 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 1909 | if (!FLAG_inline_new) { |
| 1910 | if (FLAG_debug_code) { |
| 1911 | // Trash the registers to simulate an allocation failure. |
| 1912 | movl(result, Immediate(0x7091)); |
| 1913 | if (result_end.is_valid()) { |
| 1914 | movl(result_end, Immediate(0x7191)); |
| 1915 | } |
| 1916 | if (scratch.is_valid()) { |
| 1917 | movl(scratch, Immediate(0x7291)); |
| 1918 | } |
| 1919 | } |
| 1920 | jmp(gc_required); |
| 1921 | return; |
| 1922 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1923 | ASSERT(!result.is(result_end)); |
| 1924 | |
| 1925 | // Load address of new object into result. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1926 | LoadAllocationTopHelper(result, result_end, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1927 | |
| 1928 | // Calculate new top and bail out if new space is exhausted. |
| 1929 | ExternalReference new_space_allocation_limit = |
| 1930 | ExternalReference::new_space_allocation_limit_address(); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1931 | |
| 1932 | Register top_reg = result_end.is_valid() ? result_end : result; |
| 1933 | |
| 1934 | if (top_reg.is(result)) { |
| 1935 | addq(top_reg, Immediate(object_size)); |
| 1936 | } else { |
| 1937 | lea(top_reg, Operand(result, object_size)); |
| 1938 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1939 | movq(kScratchRegister, new_space_allocation_limit); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1940 | cmpq(top_reg, Operand(kScratchRegister, 0)); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1941 | j(above, gc_required); |
| 1942 | |
| 1943 | // Update allocation top. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1944 | UpdateAllocationTopHelper(top_reg, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1945 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1946 | if (top_reg.is(result)) { |
| 1947 | if ((flags & TAG_OBJECT) != 0) { |
| 1948 | subq(result, Immediate(object_size - kHeapObjectTag)); |
| 1949 | } else { |
| 1950 | subq(result, Immediate(object_size)); |
| 1951 | } |
| 1952 | } else if ((flags & TAG_OBJECT) != 0) { |
| 1953 | // Tag the result if requested. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1954 | addq(result, Immediate(kHeapObjectTag)); |
| 1955 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1956 | } |
| 1957 | |
| 1958 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1959 | void MacroAssembler::AllocateInNewSpace(int header_size, |
| 1960 | ScaleFactor element_size, |
| 1961 | Register element_count, |
| 1962 | Register result, |
| 1963 | Register result_end, |
| 1964 | Register scratch, |
| 1965 | Label* gc_required, |
| 1966 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 1967 | if (!FLAG_inline_new) { |
| 1968 | if (FLAG_debug_code) { |
| 1969 | // Trash the registers to simulate an allocation failure. |
| 1970 | movl(result, Immediate(0x7091)); |
| 1971 | movl(result_end, Immediate(0x7191)); |
| 1972 | if (scratch.is_valid()) { |
| 1973 | movl(scratch, Immediate(0x7291)); |
| 1974 | } |
| 1975 | // Register element_count is not modified by the function. |
| 1976 | } |
| 1977 | jmp(gc_required); |
| 1978 | return; |
| 1979 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1980 | ASSERT(!result.is(result_end)); |
| 1981 | |
| 1982 | // Load address of new object into result. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1983 | LoadAllocationTopHelper(result, result_end, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1984 | |
| 1985 | // Calculate new top and bail out if new space is exhausted. |
| 1986 | ExternalReference new_space_allocation_limit = |
| 1987 | ExternalReference::new_space_allocation_limit_address(); |
| 1988 | lea(result_end, Operand(result, element_count, element_size, header_size)); |
| 1989 | movq(kScratchRegister, new_space_allocation_limit); |
| 1990 | cmpq(result_end, Operand(kScratchRegister, 0)); |
| 1991 | j(above, gc_required); |
| 1992 | |
| 1993 | // Update allocation top. |
| 1994 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1995 | |
| 1996 | // Tag the result if requested. |
| 1997 | if ((flags & TAG_OBJECT) != 0) { |
| 1998 | addq(result, Immediate(kHeapObjectTag)); |
| 1999 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2000 | } |
| 2001 | |
| 2002 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 2003 | void MacroAssembler::AllocateInNewSpace(Register object_size, |
| 2004 | Register result, |
| 2005 | Register result_end, |
| 2006 | Register scratch, |
| 2007 | Label* gc_required, |
| 2008 | AllocationFlags flags) { |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame^] | 2009 | if (!FLAG_inline_new) { |
| 2010 | if (FLAG_debug_code) { |
| 2011 | // Trash the registers to simulate an allocation failure. |
| 2012 | movl(result, Immediate(0x7091)); |
| 2013 | movl(result_end, Immediate(0x7191)); |
| 2014 | if (scratch.is_valid()) { |
| 2015 | movl(scratch, Immediate(0x7291)); |
| 2016 | } |
| 2017 | // object_size is left unchanged by this function. |
| 2018 | } |
| 2019 | jmp(gc_required); |
| 2020 | return; |
| 2021 | } |
| 2022 | ASSERT(!result.is(result_end)); |
| 2023 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2024 | // Load address of new object into result. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2025 | LoadAllocationTopHelper(result, result_end, scratch, flags); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2026 | |
| 2027 | // Calculate new top and bail out if new space is exhausted. |
| 2028 | ExternalReference new_space_allocation_limit = |
| 2029 | ExternalReference::new_space_allocation_limit_address(); |
| 2030 | if (!object_size.is(result_end)) { |
| 2031 | movq(result_end, object_size); |
| 2032 | } |
| 2033 | addq(result_end, result); |
| 2034 | movq(kScratchRegister, new_space_allocation_limit); |
| 2035 | cmpq(result_end, Operand(kScratchRegister, 0)); |
| 2036 | j(above, gc_required); |
| 2037 | |
| 2038 | // Update allocation top. |
| 2039 | UpdateAllocationTopHelper(result_end, scratch); |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 2040 | |
| 2041 | // Tag the result if requested. |
| 2042 | if ((flags & TAG_OBJECT) != 0) { |
| 2043 | addq(result, Immediate(kHeapObjectTag)); |
| 2044 | } |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 2045 | } |
| 2046 | |
| 2047 | |
| 2048 | void MacroAssembler::UndoAllocationInNewSpace(Register object) { |
| 2049 | ExternalReference new_space_allocation_top = |
| 2050 | ExternalReference::new_space_allocation_top_address(); |
| 2051 | |
| 2052 | // Make sure the object has no tag before resetting top. |
| 2053 | and_(object, Immediate(~kHeapObjectTagMask)); |
| 2054 | movq(kScratchRegister, new_space_allocation_top); |
| 2055 | #ifdef DEBUG |
| 2056 | cmpq(object, Operand(kScratchRegister, 0)); |
| 2057 | Check(below, "Undo allocation of non allocated memory"); |
| 2058 | #endif |
| 2059 | movq(Operand(kScratchRegister, 0), object); |
| 2060 | } |
| 2061 | |
| 2062 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 2063 | void MacroAssembler::AllocateHeapNumber(Register result, |
| 2064 | Register scratch, |
| 2065 | Label* gc_required) { |
| 2066 | // Allocate heap number in new space. |
| 2067 | AllocateInNewSpace(HeapNumber::kSize, |
| 2068 | result, |
| 2069 | scratch, |
| 2070 | no_reg, |
| 2071 | gc_required, |
| 2072 | TAG_OBJECT); |
| 2073 | |
| 2074 | // Set the map. |
| 2075 | LoadRoot(kScratchRegister, Heap::kHeapNumberMapRootIndex); |
| 2076 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2077 | } |
| 2078 | |
| 2079 | |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2080 | void MacroAssembler::AllocateTwoByteString(Register result, |
| 2081 | Register length, |
| 2082 | Register scratch1, |
| 2083 | Register scratch2, |
| 2084 | Register scratch3, |
| 2085 | Label* gc_required) { |
| 2086 | // Calculate the number of bytes needed for the characters in the string while |
| 2087 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2088 | const int kHeaderAlignment = SeqTwoByteString::kHeaderSize & |
| 2089 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2090 | ASSERT(kShortSize == 2); |
| 2091 | // scratch1 = length * 2 + kObjectAlignmentMask. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2092 | lea(scratch1, Operand(length, length, times_1, kObjectAlignmentMask + |
| 2093 | kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2094 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2095 | if (kHeaderAlignment > 0) { |
| 2096 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 2097 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2098 | |
| 2099 | // Allocate two byte string in new space. |
| 2100 | AllocateInNewSpace(SeqTwoByteString::kHeaderSize, |
| 2101 | times_1, |
| 2102 | scratch1, |
| 2103 | result, |
| 2104 | scratch2, |
| 2105 | scratch3, |
| 2106 | gc_required, |
| 2107 | TAG_OBJECT); |
| 2108 | |
| 2109 | // Set the map, length and hash field. |
| 2110 | LoadRoot(kScratchRegister, Heap::kStringMapRootIndex); |
| 2111 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2112 | Integer32ToSmi(scratch1, length); |
| 2113 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2114 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2115 | Immediate(String::kEmptyHashField)); |
| 2116 | } |
| 2117 | |
| 2118 | |
| 2119 | void MacroAssembler::AllocateAsciiString(Register result, |
| 2120 | Register length, |
| 2121 | Register scratch1, |
| 2122 | Register scratch2, |
| 2123 | Register scratch3, |
| 2124 | Label* gc_required) { |
| 2125 | // Calculate the number of bytes needed for the characters in the string while |
| 2126 | // observing object alignment. |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2127 | const int kHeaderAlignment = SeqAsciiString::kHeaderSize & |
| 2128 | kObjectAlignmentMask; |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2129 | movl(scratch1, length); |
| 2130 | ASSERT(kCharSize == 1); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2131 | addq(scratch1, Immediate(kObjectAlignmentMask + kHeaderAlignment)); |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2132 | and_(scratch1, Immediate(~kObjectAlignmentMask)); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2133 | if (kHeaderAlignment > 0) { |
| 2134 | subq(scratch1, Immediate(kHeaderAlignment)); |
| 2135 | } |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2136 | |
| 2137 | // Allocate ascii string in new space. |
| 2138 | AllocateInNewSpace(SeqAsciiString::kHeaderSize, |
| 2139 | times_1, |
| 2140 | scratch1, |
| 2141 | result, |
| 2142 | scratch2, |
| 2143 | scratch3, |
| 2144 | gc_required, |
| 2145 | TAG_OBJECT); |
| 2146 | |
| 2147 | // Set the map, length and hash field. |
| 2148 | LoadRoot(kScratchRegister, Heap::kAsciiStringMapRootIndex); |
| 2149 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 2150 | Integer32ToSmi(scratch1, length); |
| 2151 | movq(FieldOperand(result, String::kLengthOffset), scratch1); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2152 | movq(FieldOperand(result, String::kHashFieldOffset), |
kmillikin@chromium.org | 13bd294 | 2009-12-16 15:36:05 +0000 | [diff] [blame] | 2153 | Immediate(String::kEmptyHashField)); |
| 2154 | } |
| 2155 | |
| 2156 | |
| 2157 | void MacroAssembler::AllocateConsString(Register result, |
| 2158 | Register scratch1, |
| 2159 | Register scratch2, |
| 2160 | Label* gc_required) { |
| 2161 | // Allocate heap number in new space. |
| 2162 | AllocateInNewSpace(ConsString::kSize, |
| 2163 | result, |
| 2164 | scratch1, |
| 2165 | scratch2, |
| 2166 | gc_required, |
| 2167 | TAG_OBJECT); |
| 2168 | |
| 2169 | // Set the map. The other fields are left uninitialized. |
| 2170 | LoadRoot(kScratchRegister, Heap::kConsStringMapRootIndex); |
| 2171 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2172 | } |
| 2173 | |
| 2174 | |
| 2175 | void MacroAssembler::AllocateAsciiConsString(Register result, |
| 2176 | Register scratch1, |
| 2177 | Register scratch2, |
| 2178 | Label* gc_required) { |
| 2179 | // Allocate heap number in new space. |
| 2180 | AllocateInNewSpace(ConsString::kSize, |
| 2181 | result, |
| 2182 | scratch1, |
| 2183 | scratch2, |
| 2184 | gc_required, |
| 2185 | TAG_OBJECT); |
| 2186 | |
| 2187 | // Set the map. The other fields are left uninitialized. |
| 2188 | LoadRoot(kScratchRegister, Heap::kConsAsciiStringMapRootIndex); |
| 2189 | movq(FieldOperand(result, HeapObject::kMapOffset), kScratchRegister); |
| 2190 | } |
| 2191 | |
| 2192 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2193 | void MacroAssembler::LoadContext(Register dst, int context_chain_length) { |
| 2194 | if (context_chain_length > 0) { |
| 2195 | // Move up the chain of contexts to the context containing the slot. |
| 2196 | movq(dst, Operand(rsi, Context::SlotOffset(Context::CLOSURE_INDEX))); |
| 2197 | // Load the function context (which is the incoming, outer context). |
lrn@chromium.org | d5649e3 | 2010-01-19 13:36:12 +0000 | [diff] [blame] | 2198 | movq(dst, FieldOperand(dst, JSFunction::kContextOffset)); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2199 | for (int i = 1; i < context_chain_length; i++) { |
| 2200 | movq(dst, Operand(dst, Context::SlotOffset(Context::CLOSURE_INDEX))); |
| 2201 | movq(dst, FieldOperand(dst, JSFunction::kContextOffset)); |
| 2202 | } |
| 2203 | // The context may be an intermediate context, not a function context. |
| 2204 | movq(dst, Operand(dst, Context::SlotOffset(Context::FCONTEXT_INDEX))); |
| 2205 | } else { // context is the current function context. |
| 2206 | // The context may be an intermediate context, not a function context. |
| 2207 | movq(dst, Operand(rsi, Context::SlotOffset(Context::FCONTEXT_INDEX))); |
| 2208 | } |
| 2209 | } |
| 2210 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2211 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2212 | int MacroAssembler::ArgumentStackSlotsForCFunctionCall(int num_arguments) { |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2213 | // On Windows 64 stack slots are reserved by the caller for all arguments |
| 2214 | // including the ones passed in registers, and space is always allocated for |
| 2215 | // the four register arguments even if the function takes fewer than four |
| 2216 | // arguments. |
| 2217 | // On AMD64 ABI (Linux/Mac) the first six arguments are passed in registers |
| 2218 | // and the caller does not reserve stack slots for them. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2219 | ASSERT(num_arguments >= 0); |
| 2220 | #ifdef _WIN64 |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2221 | static const int kMinimumStackSlots = 4; |
| 2222 | if (num_arguments < kMinimumStackSlots) return kMinimumStackSlots; |
| 2223 | return num_arguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2224 | #else |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2225 | static const int kRegisterPassedArguments = 6; |
| 2226 | if (num_arguments < kRegisterPassedArguments) return 0; |
| 2227 | return num_arguments - kRegisterPassedArguments; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2228 | #endif |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2229 | } |
| 2230 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2231 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2232 | void MacroAssembler::PrepareCallCFunction(int num_arguments) { |
| 2233 | int frame_alignment = OS::ActivationFrameAlignment(); |
| 2234 | ASSERT(frame_alignment != 0); |
| 2235 | ASSERT(num_arguments >= 0); |
| 2236 | // Make stack end at alignment and allocate space for arguments and old rsp. |
| 2237 | movq(kScratchRegister, rsp); |
| 2238 | ASSERT(IsPowerOf2(frame_alignment)); |
| 2239 | int argument_slots_on_stack = |
| 2240 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 2241 | subq(rsp, Immediate((argument_slots_on_stack + 1) * kPointerSize)); |
| 2242 | and_(rsp, Immediate(-frame_alignment)); |
| 2243 | movq(Operand(rsp, argument_slots_on_stack * kPointerSize), kScratchRegister); |
| 2244 | } |
| 2245 | |
| 2246 | |
| 2247 | void MacroAssembler::CallCFunction(ExternalReference function, |
| 2248 | int num_arguments) { |
| 2249 | movq(rax, function); |
| 2250 | CallCFunction(rax, num_arguments); |
| 2251 | } |
| 2252 | |
| 2253 | |
| 2254 | void MacroAssembler::CallCFunction(Register function, int num_arguments) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 2255 | // Check stack alignment. |
| 2256 | if (FLAG_debug_code) { |
| 2257 | CheckStackAlignment(); |
| 2258 | } |
| 2259 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2260 | call(function); |
| 2261 | ASSERT(OS::ActivationFrameAlignment() != 0); |
| 2262 | ASSERT(num_arguments >= 0); |
| 2263 | int argument_slots_on_stack = |
| 2264 | ArgumentStackSlotsForCFunctionCall(num_arguments); |
| 2265 | movq(rsp, Operand(rsp, argument_slots_on_stack * kPointerSize)); |
| 2266 | } |
| 2267 | |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 2268 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 2269 | CodePatcher::CodePatcher(byte* address, int size) |
| 2270 | : address_(address), size_(size), masm_(address, size + Assembler::kGap) { |
| 2271 | // Create a new macro assembler pointing to the address of the code to patch. |
| 2272 | // The size is adjusted with kGap on order for the assembler to generate size |
| 2273 | // bytes of instructions without failing with buffer size constraints. |
| 2274 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 2275 | } |
| 2276 | |
| 2277 | |
| 2278 | CodePatcher::~CodePatcher() { |
| 2279 | // Indicate that code has changed. |
| 2280 | CPU::FlushICache(address_, size_); |
| 2281 | |
| 2282 | // Check that the code was patched as expected. |
| 2283 | ASSERT(masm_.pc_ == address_ + size_); |
| 2284 | ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
| 2285 | } |
| 2286 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 2287 | } } // namespace v8::internal |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2288 | |
| 2289 | #endif // V8_TARGET_ARCH_X64 |