ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 1 | // Copyright 2009 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 28 | #include "v8.h" |
| 29 | |
| 30 | #include "codegen-inl.h" |
| 31 | #include "ic-inl.h" |
| 32 | #include "runtime.h" |
| 33 | #include "stub-cache.h" |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 34 | #include "utils.h" |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 35 | |
| 36 | namespace v8 { |
| 37 | namespace internal { |
| 38 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 39 | // ---------------------------------------------------------------------------- |
| 40 | // Static IC stub generators. |
| 41 | // |
| 42 | |
| 43 | #define __ ACCESS_MASM(masm) |
| 44 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 45 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 46 | // Helper function used to load a property from a dictionary backing storage. |
| 47 | // This function may return false negatives, so miss_label |
| 48 | // must always call a backup property load that is complete. |
| 49 | // This function is safe to call if the receiver has fast properties, |
| 50 | // or if name is not a symbol, and will jump to the miss_label in that case. |
| 51 | static void GenerateDictionaryLoad(MacroAssembler* masm, Label* miss_label, |
| 52 | Register r0, Register r1, Register r2, |
| 53 | Register name) { |
| 54 | // Register use: |
| 55 | // |
| 56 | // r0 - used to hold the property dictionary. |
| 57 | // |
| 58 | // r1 - initially the receiver |
| 59 | // - used for the index into the property dictionary |
| 60 | // - holds the result on exit. |
| 61 | // |
| 62 | // r2 - used to hold the capacity of the property dictionary. |
| 63 | // |
| 64 | // name - holds the name of the property and is unchanged. |
| 65 | |
| 66 | Label done; |
| 67 | |
| 68 | // Check for the absence of an interceptor. |
| 69 | // Load the map into r0. |
| 70 | __ movq(r0, FieldOperand(r1, JSObject::kMapOffset)); |
| 71 | // Test the has_named_interceptor bit in the map. |
| 72 | __ testl(FieldOperand(r0, Map::kInstanceAttributesOffset), |
| 73 | Immediate(1 << (Map::kHasNamedInterceptor + (3 * 8)))); |
| 74 | |
| 75 | // Jump to miss if the interceptor bit is set. |
| 76 | __ j(not_zero, miss_label); |
| 77 | |
| 78 | // Bail out if we have a JS global proxy object. |
| 79 | __ movzxbq(r0, FieldOperand(r0, Map::kInstanceTypeOffset)); |
| 80 | __ cmpb(r0, Immediate(JS_GLOBAL_PROXY_TYPE)); |
| 81 | __ j(equal, miss_label); |
| 82 | |
| 83 | // Possible work-around for http://crbug.com/16276. |
| 84 | __ cmpb(r0, Immediate(JS_GLOBAL_OBJECT_TYPE)); |
| 85 | __ j(equal, miss_label); |
| 86 | __ cmpb(r0, Immediate(JS_BUILTINS_OBJECT_TYPE)); |
| 87 | __ j(equal, miss_label); |
| 88 | |
| 89 | // Check that the properties array is a dictionary. |
| 90 | __ movq(r0, FieldOperand(r1, JSObject::kPropertiesOffset)); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 91 | __ Cmp(FieldOperand(r0, HeapObject::kMapOffset), Factory::hash_table_map()); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 92 | __ j(not_equal, miss_label); |
| 93 | |
| 94 | // Compute the capacity mask. |
| 95 | const int kCapacityOffset = |
| 96 | StringDictionary::kHeaderSize + |
| 97 | StringDictionary::kCapacityIndex * kPointerSize; |
| 98 | __ movq(r2, FieldOperand(r0, kCapacityOffset)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 99 | __ SmiToInteger32(r2, r2); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 100 | __ decl(r2); |
| 101 | |
| 102 | // Generate an unrolled loop that performs a few probes before |
| 103 | // giving up. Measurements done on Gmail indicate that 2 probes |
| 104 | // cover ~93% of loads from dictionaries. |
| 105 | static const int kProbes = 4; |
| 106 | const int kElementsStartOffset = |
| 107 | StringDictionary::kHeaderSize + |
| 108 | StringDictionary::kElementsStartIndex * kPointerSize; |
| 109 | for (int i = 0; i < kProbes; i++) { |
| 110 | // Compute the masked index: (hash + i + i * i) & mask. |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 111 | __ movl(r1, FieldOperand(name, String::kHashFieldOffset)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 112 | __ shrl(r1, Immediate(String::kHashShift)); |
| 113 | if (i > 0) { |
| 114 | __ addl(r1, Immediate(StringDictionary::GetProbeOffset(i))); |
| 115 | } |
| 116 | __ and_(r1, r2); |
| 117 | |
| 118 | // Scale the index by multiplying by the entry size. |
| 119 | ASSERT(StringDictionary::kEntrySize == 3); |
| 120 | __ lea(r1, Operand(r1, r1, times_2, 0)); // r1 = r1 * 3 |
| 121 | |
| 122 | // Check if the key is identical to the name. |
| 123 | __ cmpq(name, Operand(r0, r1, times_pointer_size, |
| 124 | kElementsStartOffset - kHeapObjectTag)); |
| 125 | if (i != kProbes - 1) { |
| 126 | __ j(equal, &done); |
| 127 | } else { |
| 128 | __ j(not_equal, miss_label); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | // Check that the value is a normal property. |
| 133 | __ bind(&done); |
| 134 | const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize; |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 135 | __ Test(Operand(r0, r1, times_pointer_size, kDetailsOffset - kHeapObjectTag), |
| 136 | Smi::FromInt(PropertyDetails::TypeField::mask())); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 137 | __ j(not_zero, miss_label); |
| 138 | |
| 139 | // Get the value at the masked, scaled index. |
| 140 | const int kValueOffset = kElementsStartOffset + kPointerSize; |
| 141 | __ movq(r1, |
| 142 | Operand(r0, r1, times_pointer_size, kValueOffset - kHeapObjectTag)); |
| 143 | } |
| 144 | |
| 145 | |
| 146 | // Helper function used to check that a value is either not an object |
| 147 | // or is loaded if it is an object. |
| 148 | static void GenerateCheckNonObjectOrLoaded(MacroAssembler* masm, Label* miss, |
| 149 | Register value) { |
| 150 | Label done; |
| 151 | // Check if the value is a Smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 152 | __ JumpIfSmi(value, &done); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 153 | // Check if the object has been loaded. |
| 154 | __ movq(kScratchRegister, FieldOperand(value, JSFunction::kMapOffset)); |
| 155 | __ testb(FieldOperand(kScratchRegister, Map::kBitField2Offset), |
| 156 | Immediate(1 << Map::kNeedsLoading)); |
| 157 | __ j(not_zero, miss); |
| 158 | __ bind(&done); |
| 159 | } |
| 160 | |
| 161 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 162 | // One byte opcode for test eax,0xXXXXXXXX. |
| 163 | static const byte kTestEaxByte = 0xA9; |
| 164 | |
| 165 | |
| 166 | static bool PatchInlinedMapCheck(Address address, Object* map) { |
| 167 | // Arguments are address of start of call sequence that called |
| 168 | // the IC, |
| 169 | Address test_instruction_address = |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 170 | address + Assembler::kCallTargetAddressOffset; |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 171 | // The keyed load has a fast inlined case if the IC call instruction |
| 172 | // is immediately followed by a test instruction. |
| 173 | if (*test_instruction_address != kTestEaxByte) return false; |
| 174 | |
| 175 | // Fetch the offset from the test instruction to the map compare |
| 176 | // instructions (starting with the 64-bit immediate mov of the map |
| 177 | // address). This offset is stored in the last 4 bytes of the 5 |
| 178 | // byte test instruction. |
| 179 | Address delta_address = test_instruction_address + 1; |
| 180 | int delta = *reinterpret_cast<int*>(delta_address); |
| 181 | // Compute the map address. The map address is in the last 8 bytes |
| 182 | // of the 10-byte immediate mov instruction (incl. REX prefix), so we add 2 |
| 183 | // to the offset to get the map address. |
| 184 | Address map_address = test_instruction_address + delta + 2; |
| 185 | // Patch the map check. |
| 186 | *(reinterpret_cast<Object**>(map_address)) = map; |
| 187 | return true; |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 188 | } |
| 189 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 190 | |
| 191 | bool KeyedLoadIC::PatchInlinedLoad(Address address, Object* map) { |
| 192 | return PatchInlinedMapCheck(address, map); |
| 193 | } |
| 194 | |
| 195 | |
| 196 | bool KeyedStoreIC::PatchInlinedStore(Address address, Object* map) { |
| 197 | return PatchInlinedMapCheck(address, map); |
| 198 | } |
| 199 | |
| 200 | |
| 201 | void KeyedLoadIC::ClearInlinedVersion(Address address) { |
| 202 | // Insert null as the map to check for to make sure the map check fails |
| 203 | // sending control flow to the IC instead of the inlined version. |
| 204 | PatchInlinedLoad(address, Heap::null_value()); |
| 205 | } |
| 206 | |
| 207 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 208 | void KeyedStoreIC::ClearInlinedVersion(Address address) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 209 | // Insert null as the elements map to check for. This will make |
| 210 | // sure that the elements fast-case map check fails so that control |
| 211 | // flows to the IC instead of the inlined version. |
| 212 | PatchInlinedStore(address, Heap::null_value()); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 213 | } |
| 214 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 215 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 216 | void KeyedStoreIC::RestoreInlinedVersion(Address address) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 217 | // Restore the fast-case elements map check so that the inlined |
| 218 | // version can be used again. |
| 219 | PatchInlinedStore(address, Heap::fixed_array_map()); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 220 | } |
| 221 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 222 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 223 | void KeyedLoadIC::Generate(MacroAssembler* masm, |
| 224 | ExternalReference const& f) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 225 | // ----------- S t a t e ------------- |
| 226 | // -- rsp[0] : return address |
| 227 | // -- rsp[8] : name |
| 228 | // -- rsp[16] : receiver |
| 229 | // ----------------------------------- |
| 230 | |
| 231 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 232 | __ movq(rcx, Operand(rsp, 2 * kPointerSize)); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 233 | __ pop(rbx); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 234 | __ push(rcx); // receiver |
| 235 | __ push(rax); // name |
| 236 | __ push(rbx); // return address |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 237 | |
| 238 | // Perform tail call to the entry. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 239 | __ TailCallRuntime(f, 2, 1); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 240 | } |
| 241 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 242 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 243 | void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 244 | // ----------- S t a t e ------------- |
| 245 | // -- rsp[0] : return address |
| 246 | // -- rsp[8] : name |
| 247 | // -- rsp[16] : receiver |
| 248 | // ----------------------------------- |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 249 | Label slow, check_string, index_int, index_string, check_pixel_array; |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 250 | |
| 251 | // Load name and receiver. |
| 252 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 253 | __ movq(rcx, Operand(rsp, 2 * kPointerSize)); |
| 254 | |
| 255 | // Check that the object isn't a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 256 | __ JumpIfSmi(rcx, &slow); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 257 | |
| 258 | // Check that the object is some kind of JS object EXCEPT JS Value type. |
| 259 | // In the case that the object is a value-wrapper object, |
| 260 | // we enter the runtime system to make sure that indexing |
| 261 | // into string objects work as intended. |
| 262 | ASSERT(JS_OBJECT_TYPE > JS_VALUE_TYPE); |
| 263 | __ CmpObjectType(rcx, JS_OBJECT_TYPE, rdx); |
| 264 | __ j(below, &slow); |
| 265 | // Check that the receiver does not require access checks. We need |
| 266 | // to check this explicitly since this generic stub does not perform |
| 267 | // map checks. The map is already in rdx. |
| 268 | __ testb(FieldOperand(rdx, Map::kBitFieldOffset), |
| 269 | Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 270 | __ j(not_zero, &slow); |
| 271 | |
| 272 | // Check that the key is a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 273 | __ JumpIfNotSmi(rax, &check_string); |
| 274 | __ SmiToInteger32(rax, rax); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 275 | // Get the elements array of the object. |
| 276 | __ bind(&index_int); |
| 277 | __ movq(rcx, FieldOperand(rcx, JSObject::kElementsOffset)); |
| 278 | // Check that the object is in fast mode (not dictionary). |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 279 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 280 | Heap::kFixedArrayMapRootIndex); |
| 281 | __ j(not_equal, &check_pixel_array); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 282 | // Check that the key (index) is within bounds. |
| 283 | __ cmpl(rax, FieldOperand(rcx, FixedArray::kLengthOffset)); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 284 | __ j(above_equal, &slow); // Unsigned comparison rejects negative indices. |
| 285 | // Fast case: Do the load. |
| 286 | __ movq(rax, Operand(rcx, rax, times_pointer_size, |
| 287 | FixedArray::kHeaderSize - kHeapObjectTag)); |
| 288 | __ CompareRoot(rax, Heap::kTheHoleValueRootIndex); |
| 289 | // In case the loaded value is the_hole we have to consult GetProperty |
| 290 | // to ensure the prototype chain is searched. |
| 291 | __ j(equal, &slow); |
| 292 | __ IncrementCounter(&Counters::keyed_load_generic_smi, 1); |
| 293 | __ ret(0); |
| 294 | |
| 295 | // Check whether the elements is a pixel array. |
| 296 | // rax: untagged index |
| 297 | // rcx: elements array |
| 298 | __ bind(&check_pixel_array); |
| 299 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 300 | Heap::kPixelArrayMapRootIndex); |
| 301 | __ j(not_equal, &slow); |
| 302 | __ cmpl(rax, FieldOperand(rcx, PixelArray::kLengthOffset)); |
| 303 | __ j(above_equal, &slow); |
| 304 | __ movq(rcx, FieldOperand(rcx, PixelArray::kExternalPointerOffset)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 305 | __ movzxbq(rax, Operand(rcx, rax, times_1, 0)); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 306 | __ Integer32ToSmi(rax, rax); |
| 307 | __ ret(0); |
| 308 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 309 | // Slow case: Load name and receiver from stack and jump to runtime. |
| 310 | __ bind(&slow); |
| 311 | __ IncrementCounter(&Counters::keyed_load_generic_slow, 1); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 312 | Generate(masm, ExternalReference(Runtime::kKeyedGetProperty)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 313 | __ bind(&check_string); |
| 314 | // The key is not a smi. |
| 315 | // Is it a string? |
| 316 | __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdx); |
| 317 | __ j(above_equal, &slow); |
| 318 | // Is the string an array index, with cached numeric value? |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 319 | __ movl(rbx, FieldOperand(rax, String::kHashFieldOffset)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 320 | __ testl(rbx, Immediate(String::kIsArrayIndexMask)); |
| 321 | |
| 322 | // If the string is a symbol, do a quick inline probe of the receiver's |
| 323 | // dictionary, if it exists. |
| 324 | __ j(not_zero, &index_string); // The value in rbx is used at jump target. |
| 325 | __ testb(FieldOperand(rdx, Map::kInstanceTypeOffset), |
| 326 | Immediate(kIsSymbolMask)); |
| 327 | __ j(zero, &slow); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 328 | // Probe the dictionary leaving result in rcx. |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 329 | GenerateDictionaryLoad(masm, &slow, rbx, rcx, rdx, rax); |
| 330 | GenerateCheckNonObjectOrLoaded(masm, &slow, rcx); |
| 331 | __ movq(rax, rcx); |
| 332 | __ IncrementCounter(&Counters::keyed_load_generic_symbol, 1); |
| 333 | __ ret(0); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 334 | // If the hash field contains an array index pick it out. The assert checks |
| 335 | // that the constants for the maximum number of digits for an array index |
| 336 | // cached in the hash field and the number of bits reserved for it does not |
| 337 | // conflict. |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 338 | ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 339 | (1 << String::kArrayIndexValueBits)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 340 | __ bind(&index_string); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 341 | __ movl(rax, rbx); |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 342 | __ and_(rax, Immediate(String::kArrayIndexHashMask)); |
| 343 | __ shrl(rax, Immediate(String::kHashShift)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 344 | __ jmp(&index_int); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 345 | } |
| 346 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 347 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 348 | void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm, |
| 349 | ExternalArrayType array_type) { |
| 350 | // ----------- S t a t e ------------- |
| 351 | // -- rsp[0] : return address |
| 352 | // -- rsp[8] : name |
| 353 | // -- rsp[16] : receiver |
| 354 | // ----------------------------------- |
| 355 | Label slow, failed_allocation; |
| 356 | |
| 357 | // Load name and receiver. |
| 358 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 359 | __ movq(rcx, Operand(rsp, 2 * kPointerSize)); |
| 360 | |
| 361 | // Check that the object isn't a smi. |
| 362 | __ JumpIfSmi(rcx, &slow); |
| 363 | |
| 364 | // Check that the key is a smi. |
| 365 | __ JumpIfNotSmi(rax, &slow); |
| 366 | |
| 367 | // Check that the object is a JS object. |
| 368 | __ CmpObjectType(rcx, JS_OBJECT_TYPE, rdx); |
| 369 | __ j(not_equal, &slow); |
| 370 | // Check that the receiver does not require access checks. We need |
| 371 | // to check this explicitly since this generic stub does not perform |
| 372 | // map checks. The map is already in rdx. |
| 373 | __ testb(FieldOperand(rdx, Map::kBitFieldOffset), |
| 374 | Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 375 | __ j(not_zero, &slow); |
| 376 | |
| 377 | // Check that the elements array is the appropriate type of |
| 378 | // ExternalArray. |
| 379 | // rax: index (as a smi) |
| 380 | // rcx: JSObject |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 381 | __ movq(rcx, FieldOperand(rcx, JSObject::kElementsOffset)); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 382 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 383 | Heap::RootIndexForExternalArrayType(array_type)); |
| 384 | __ j(not_equal, &slow); |
| 385 | |
| 386 | // Check that the index is in range. |
| 387 | __ SmiToInteger32(rax, rax); |
| 388 | __ cmpl(rax, FieldOperand(rcx, ExternalArray::kLengthOffset)); |
| 389 | // Unsigned comparison catches both negative and too-large values. |
| 390 | __ j(above_equal, &slow); |
| 391 | |
| 392 | // rax: untagged index |
| 393 | // rcx: elements array |
| 394 | __ movq(rcx, FieldOperand(rcx, ExternalArray::kExternalPointerOffset)); |
| 395 | // rcx: base pointer of external storage |
| 396 | switch (array_type) { |
| 397 | case kExternalByteArray: |
| 398 | __ movsxbq(rax, Operand(rcx, rax, times_1, 0)); |
| 399 | break; |
| 400 | case kExternalUnsignedByteArray: |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame^] | 401 | __ movzxbq(rax, Operand(rcx, rax, times_1, 0)); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 402 | break; |
| 403 | case kExternalShortArray: |
| 404 | __ movsxwq(rax, Operand(rcx, rax, times_2, 0)); |
| 405 | break; |
| 406 | case kExternalUnsignedShortArray: |
| 407 | __ movzxwq(rax, Operand(rcx, rax, times_2, 0)); |
| 408 | break; |
| 409 | case kExternalIntArray: |
| 410 | __ movsxlq(rax, Operand(rcx, rax, times_4, 0)); |
| 411 | break; |
| 412 | case kExternalUnsignedIntArray: |
| 413 | __ movl(rax, Operand(rcx, rax, times_4, 0)); |
| 414 | break; |
| 415 | case kExternalFloatArray: |
| 416 | __ fld_s(Operand(rcx, rax, times_4, 0)); |
| 417 | break; |
| 418 | default: |
| 419 | UNREACHABLE(); |
| 420 | break; |
| 421 | } |
| 422 | |
| 423 | // For integer array types: |
| 424 | // rax: value |
| 425 | // For floating-point array type: |
| 426 | // FP(0): value |
| 427 | |
| 428 | if (array_type == kExternalIntArray || |
| 429 | array_type == kExternalUnsignedIntArray) { |
| 430 | // For the Int and UnsignedInt array types, we need to see whether |
| 431 | // the value can be represented in a Smi. If not, we need to convert |
| 432 | // it to a HeapNumber. |
| 433 | Label box_int; |
| 434 | if (array_type == kExternalIntArray) { |
| 435 | __ JumpIfNotValidSmiValue(rax, &box_int); |
| 436 | } else { |
| 437 | ASSERT_EQ(array_type, kExternalUnsignedIntArray); |
| 438 | __ JumpIfUIntNotValidSmiValue(rax, &box_int); |
| 439 | } |
| 440 | |
| 441 | __ Integer32ToSmi(rax, rax); |
| 442 | __ ret(0); |
| 443 | |
| 444 | __ bind(&box_int); |
| 445 | |
| 446 | // Allocate a HeapNumber for the int and perform int-to-double |
| 447 | // conversion. |
| 448 | __ push(rax); |
| 449 | if (array_type == kExternalIntArray) { |
| 450 | __ fild_s(Operand(rsp, 0)); |
| 451 | } else { |
| 452 | ASSERT(array_type == kExternalUnsignedIntArray); |
| 453 | // Need to zero-extend the value. |
| 454 | __ fild_d(Operand(rsp, 0)); |
| 455 | } |
| 456 | __ pop(rax); |
| 457 | // FP(0): value |
| 458 | __ AllocateHeapNumber(rax, rbx, &failed_allocation); |
| 459 | // Set the value. |
| 460 | __ fstp_d(FieldOperand(rax, HeapNumber::kValueOffset)); |
| 461 | __ ret(0); |
| 462 | } else if (array_type == kExternalFloatArray) { |
| 463 | // For the floating-point array type, we need to always allocate a |
| 464 | // HeapNumber. |
| 465 | __ AllocateHeapNumber(rax, rbx, &failed_allocation); |
| 466 | // Set the value. |
| 467 | __ fstp_d(FieldOperand(rax, HeapNumber::kValueOffset)); |
| 468 | __ ret(0); |
| 469 | } else { |
| 470 | __ Integer32ToSmi(rax, rax); |
| 471 | __ ret(0); |
| 472 | } |
| 473 | |
| 474 | // If we fail allocation of the HeapNumber, we still have a value on |
| 475 | // top of the FPU stack. Remove it. |
| 476 | __ bind(&failed_allocation); |
| 477 | __ ffree(); |
| 478 | __ fincstp(); |
| 479 | // Fall through to slow case. |
| 480 | |
| 481 | // Slow case: Load name and receiver from stack and jump to runtime. |
| 482 | __ bind(&slow); |
| 483 | __ IncrementCounter(&Counters::keyed_load_external_array_slow, 1); |
| 484 | Generate(masm, ExternalReference(Runtime::kKeyedGetProperty)); |
| 485 | } |
| 486 | |
| 487 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 488 | void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 489 | // ----------- S t a t e ------------- |
| 490 | // -- rsp[0] : return address |
| 491 | // -- rsp[8] : name |
| 492 | // -- rsp[16] : receiver |
| 493 | // ----------------------------------- |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 494 | Generate(masm, ExternalReference(IC_Utility(kKeyedLoadIC_Miss))); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 495 | } |
| 496 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 497 | |
| 498 | void KeyedStoreIC::Generate(MacroAssembler* masm, ExternalReference const& f) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 499 | // ----------- S t a t e ------------- |
| 500 | // -- rax : value |
| 501 | // -- rsp[0] : return address |
| 502 | // -- rsp[8] : key |
| 503 | // -- rsp[16] : receiver |
| 504 | // ----------------------------------- |
| 505 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 506 | __ pop(rcx); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 507 | __ push(Operand(rsp, 1 * kPointerSize)); // receiver |
| 508 | __ push(Operand(rsp, 1 * kPointerSize)); // key |
| 509 | __ push(rax); // value |
| 510 | __ push(rcx); // return address |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 511 | |
| 512 | // Do tail-call to runtime routine. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 513 | __ TailCallRuntime(f, 3, 1); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 514 | } |
| 515 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 516 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 517 | void KeyedStoreIC::GenerateExtendStorage(MacroAssembler* masm) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 518 | // ----------- S t a t e ------------- |
| 519 | // -- rax : value |
| 520 | // -- rcx : transition map |
| 521 | // -- rsp[0] : return address |
| 522 | // -- rsp[8] : key |
| 523 | // -- rsp[16] : receiver |
| 524 | // ----------------------------------- |
| 525 | |
| 526 | __ pop(rbx); |
| 527 | __ push(Operand(rsp, 1 * kPointerSize)); // receiver |
| 528 | __ push(rcx); // transition map |
| 529 | __ push(rax); // value |
| 530 | __ push(rbx); // return address |
| 531 | |
| 532 | // Do tail-call to runtime routine. |
| 533 | __ TailCallRuntime( |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 534 | ExternalReference(IC_Utility(kSharedStoreIC_ExtendStorage)), 3, 1); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 535 | } |
| 536 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 537 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 538 | void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 539 | // ----------- S t a t e ------------- |
| 540 | // -- rax : value |
| 541 | // -- rsp[0] : return address |
| 542 | // -- rsp[8] : key |
| 543 | // -- rsp[16] : receiver |
| 544 | // ----------------------------------- |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 545 | Label slow, fast, array, extra, check_pixel_array; |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 546 | |
| 547 | // Get the receiver from the stack. |
| 548 | __ movq(rdx, Operand(rsp, 2 * kPointerSize)); // 2 ~ return address, key |
| 549 | // Check that the object isn't a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 550 | __ JumpIfSmi(rdx, &slow); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 551 | // Get the map from the receiver. |
| 552 | __ movq(rcx, FieldOperand(rdx, HeapObject::kMapOffset)); |
| 553 | // Check that the receiver does not require access checks. We need |
| 554 | // to do this because this generic stub does not perform map checks. |
| 555 | __ testb(FieldOperand(rcx, Map::kBitFieldOffset), |
| 556 | Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 557 | __ j(not_zero, &slow); |
| 558 | // Get the key from the stack. |
| 559 | __ movq(rbx, Operand(rsp, 1 * kPointerSize)); // 1 ~ return address |
| 560 | // Check that the key is a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 561 | __ JumpIfNotSmi(rbx, &slow); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 562 | |
| 563 | __ CmpInstanceType(rcx, JS_ARRAY_TYPE); |
| 564 | __ j(equal, &array); |
| 565 | // Check that the object is some kind of JS object. |
| 566 | __ CmpInstanceType(rcx, FIRST_JS_OBJECT_TYPE); |
| 567 | __ j(below, &slow); |
| 568 | |
| 569 | // Object case: Check key against length in the elements array. |
| 570 | // rax: value |
| 571 | // rdx: JSObject |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 572 | // rbx: index (as a smi) |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 573 | __ movq(rcx, FieldOperand(rdx, JSObject::kElementsOffset)); |
| 574 | // Check that the object is in fast mode (not dictionary). |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 575 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 576 | Heap::kFixedArrayMapRootIndex); |
| 577 | __ j(not_equal, &check_pixel_array); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 578 | // Untag the key (for checking against untagged length in the fixed array). |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 579 | __ SmiToInteger32(rdx, rbx); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 580 | __ cmpl(rdx, FieldOperand(rcx, Array::kLengthOffset)); |
| 581 | // rax: value |
| 582 | // rcx: FixedArray |
| 583 | // rbx: index (as a smi) |
| 584 | __ j(below, &fast); |
| 585 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 586 | // Slow case: call runtime. |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 587 | __ bind(&slow); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 588 | Generate(masm, ExternalReference(Runtime::kSetProperty)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 589 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 590 | // Check whether the elements is a pixel array. |
| 591 | // rax: value |
| 592 | // rcx: elements array |
| 593 | // rbx: index (as a smi), zero-extended. |
| 594 | __ bind(&check_pixel_array); |
| 595 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 596 | Heap::kPixelArrayMapRootIndex); |
| 597 | __ j(not_equal, &slow); |
| 598 | // Check that the value is a smi. If a conversion is needed call into the |
| 599 | // runtime to convert and clamp. |
| 600 | __ JumpIfNotSmi(rax, &slow); |
| 601 | __ SmiToInteger32(rbx, rbx); |
| 602 | __ cmpl(rbx, FieldOperand(rcx, PixelArray::kLengthOffset)); |
| 603 | __ j(above_equal, &slow); |
| 604 | __ movq(rdx, rax); // Save the value. |
| 605 | __ SmiToInteger32(rax, rax); |
| 606 | { // Clamp the value to [0..255]. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 607 | Label done; |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 608 | __ testl(rax, Immediate(0xFFFFFF00)); |
| 609 | __ j(zero, &done); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 610 | __ setcc(negative, rax); // 1 if negative, 0 if positive. |
| 611 | __ decb(rax); // 0 if negative, 255 if positive. |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 612 | __ bind(&done); |
| 613 | } |
| 614 | __ movq(rcx, FieldOperand(rcx, PixelArray::kExternalPointerOffset)); |
| 615 | __ movb(Operand(rcx, rbx, times_1, 0), rax); |
| 616 | __ movq(rax, rdx); // Return the original value. |
| 617 | __ ret(0); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 618 | |
| 619 | // Extra capacity case: Check if there is extra capacity to |
| 620 | // perform the store and update the length. Used for adding one |
| 621 | // element to the array by writing to array[array.length]. |
| 622 | __ bind(&extra); |
| 623 | // rax: value |
| 624 | // rdx: JSArray |
| 625 | // rcx: FixedArray |
| 626 | // rbx: index (as a smi) |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 627 | // flags: smicompare (rdx.length(), rbx) |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 628 | __ j(not_equal, &slow); // do not leave holes in the array |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 629 | __ SmiToInteger64(rbx, rbx); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 630 | __ cmpl(rbx, FieldOperand(rcx, FixedArray::kLengthOffset)); |
| 631 | __ j(above_equal, &slow); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 632 | // Increment and restore smi-tag. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 633 | __ Integer64PlusConstantToSmi(rbx, rbx, 1); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 634 | __ movq(FieldOperand(rdx, JSArray::kLengthOffset), rbx); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 635 | __ SmiSubConstant(rbx, rbx, Smi::FromInt(1)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 636 | __ jmp(&fast); |
| 637 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 638 | // Array case: Get the length and the elements array from the JS |
| 639 | // array. Check that the array is in fast mode; if it is the |
| 640 | // length is always a smi. |
| 641 | __ bind(&array); |
| 642 | // rax: value |
| 643 | // rdx: JSArray |
| 644 | // rbx: index (as a smi) |
| 645 | __ movq(rcx, FieldOperand(rdx, JSObject::kElementsOffset)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 646 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 647 | Heap::kFixedArrayMapRootIndex); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 648 | __ j(not_equal, &slow); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 649 | |
| 650 | // Check the key against the length in the array, compute the |
| 651 | // address to store into and fall through to fast case. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 652 | __ SmiCompare(FieldOperand(rdx, JSArray::kLengthOffset), rbx); |
| 653 | __ j(below_equal, &extra); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 654 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 655 | // Fast case: Do the store. |
| 656 | __ bind(&fast); |
| 657 | // rax: value |
| 658 | // rcx: FixedArray |
| 659 | // rbx: index (as a smi) |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 660 | Label non_smi_value; |
| 661 | __ JumpIfNotSmi(rax, &non_smi_value); |
| 662 | SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2); |
| 663 | __ movq(Operand(rcx, index.reg, index.scale, |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 664 | FixedArray::kHeaderSize - kHeapObjectTag), |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 665 | rax); |
| 666 | __ ret(0); |
| 667 | __ bind(&non_smi_value); |
| 668 | // Slow case that needs to retain rbx for use by RecordWrite. |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 669 | // Update write barrier for the elements array address. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 670 | SmiIndex index2 = masm->SmiToIndex(kScratchRegister, rbx, kPointerSizeLog2); |
| 671 | __ movq(Operand(rcx, index2.reg, index2.scale, |
| 672 | FixedArray::kHeaderSize - kHeapObjectTag), |
| 673 | rax); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 674 | __ movq(rdx, rax); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 675 | __ RecordWriteNonSmi(rcx, 0, rdx, rbx); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 676 | __ ret(0); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 677 | } |
| 678 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 679 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 680 | void KeyedStoreIC::GenerateExternalArray(MacroAssembler* masm, |
| 681 | ExternalArrayType array_type) { |
| 682 | // ----------- S t a t e ------------- |
| 683 | // -- rax : value |
| 684 | // -- rsp[0] : return address |
| 685 | // -- rsp[8] : key |
| 686 | // -- rsp[16] : receiver |
| 687 | // ----------------------------------- |
| 688 | Label slow, check_heap_number; |
| 689 | |
| 690 | // Get the receiver from the stack. |
| 691 | __ movq(rdx, Operand(rsp, 2 * kPointerSize)); |
| 692 | // Check that the object isn't a smi. |
| 693 | __ JumpIfSmi(rdx, &slow); |
| 694 | // Get the map from the receiver. |
| 695 | __ movq(rcx, FieldOperand(rdx, HeapObject::kMapOffset)); |
| 696 | // Check that the receiver does not require access checks. We need |
| 697 | // to do this because this generic stub does not perform map checks. |
| 698 | __ testb(FieldOperand(rcx, Map::kBitFieldOffset), |
| 699 | Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 700 | __ j(not_zero, &slow); |
| 701 | // Get the key from the stack. |
| 702 | __ movq(rbx, Operand(rsp, 1 * kPointerSize)); // 1 ~ return address |
| 703 | // Check that the key is a smi. |
| 704 | __ JumpIfNotSmi(rbx, &slow); |
| 705 | |
| 706 | // Check that the object is a JS object. |
| 707 | __ CmpInstanceType(rcx, JS_OBJECT_TYPE); |
| 708 | __ j(not_equal, &slow); |
| 709 | |
| 710 | // Check that the elements array is the appropriate type of |
| 711 | // ExternalArray. |
| 712 | // rax: value |
| 713 | // rdx: JSObject |
| 714 | // rbx: index (as a smi) |
| 715 | __ movq(rcx, FieldOperand(rdx, JSObject::kElementsOffset)); |
| 716 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 717 | Heap::RootIndexForExternalArrayType(array_type)); |
| 718 | __ j(not_equal, &slow); |
| 719 | |
| 720 | // Check that the index is in range. |
| 721 | __ SmiToInteger32(rbx, rbx); // Untag the index. |
| 722 | __ cmpl(rbx, FieldOperand(rcx, ExternalArray::kLengthOffset)); |
| 723 | // Unsigned comparison catches both negative and too-large values. |
| 724 | __ j(above_equal, &slow); |
| 725 | |
| 726 | // Handle both smis and HeapNumbers in the fast path. Go to the |
| 727 | // runtime for all other kinds of values. |
| 728 | // rax: value |
| 729 | // rcx: elements array |
| 730 | // rbx: untagged index |
| 731 | __ JumpIfNotSmi(rax, &check_heap_number); |
| 732 | __ movq(rdx, rax); // Save the value. |
| 733 | __ SmiToInteger32(rax, rax); |
| 734 | __ movq(rcx, FieldOperand(rcx, ExternalArray::kExternalPointerOffset)); |
| 735 | // rcx: base pointer of external storage |
| 736 | switch (array_type) { |
| 737 | case kExternalByteArray: |
| 738 | case kExternalUnsignedByteArray: |
| 739 | __ movb(Operand(rcx, rbx, times_1, 0), rax); |
| 740 | break; |
| 741 | case kExternalShortArray: |
| 742 | case kExternalUnsignedShortArray: |
| 743 | __ movw(Operand(rcx, rbx, times_2, 0), rax); |
| 744 | break; |
| 745 | case kExternalIntArray: |
| 746 | case kExternalUnsignedIntArray: |
| 747 | __ movl(Operand(rcx, rbx, times_4, 0), rax); |
| 748 | break; |
| 749 | case kExternalFloatArray: |
| 750 | // Need to perform int-to-float conversion. |
| 751 | __ push(rax); |
| 752 | __ fild_s(Operand(rsp, 0)); |
| 753 | __ pop(rax); |
| 754 | __ fstp_s(Operand(rcx, rbx, times_4, 0)); |
| 755 | break; |
| 756 | default: |
| 757 | UNREACHABLE(); |
| 758 | break; |
| 759 | } |
| 760 | __ movq(rax, rdx); // Return the original value. |
| 761 | __ ret(0); |
| 762 | |
| 763 | __ bind(&check_heap_number); |
| 764 | __ CmpObjectType(rax, HEAP_NUMBER_TYPE, rdx); |
| 765 | __ j(not_equal, &slow); |
| 766 | |
| 767 | // The WebGL specification leaves the behavior of storing NaN and |
| 768 | // +/-Infinity into integer arrays basically undefined. For more |
| 769 | // reproducible behavior, convert these to zero. |
| 770 | __ fld_d(FieldOperand(rax, HeapNumber::kValueOffset)); |
| 771 | __ movq(rdx, rax); // Save the value. |
| 772 | __ movq(rcx, FieldOperand(rcx, ExternalArray::kExternalPointerOffset)); |
| 773 | // rbx: untagged index |
| 774 | // rcx: base pointer of external storage |
| 775 | // top of FPU stack: value |
| 776 | if (array_type == kExternalFloatArray) { |
| 777 | __ fstp_s(Operand(rcx, rbx, times_4, 0)); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 778 | __ movq(rax, rdx); // Return the original value. |
| 779 | __ ret(0); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 780 | } else { |
| 781 | // Need to perform float-to-int conversion. |
| 782 | // Test the top of the FP stack for NaN. |
| 783 | Label is_nan; |
| 784 | __ fucomi(0); |
| 785 | __ j(parity_even, &is_nan); |
| 786 | |
| 787 | __ push(rax); // Make room on stack |
| 788 | __ fistp_d(Operand(rsp, 0)); |
| 789 | __ pop(rax); |
| 790 | // rax: untagged integer value |
| 791 | switch (array_type) { |
| 792 | case kExternalByteArray: |
| 793 | case kExternalUnsignedByteArray: |
| 794 | __ movb(Operand(rcx, rbx, times_1, 0), rax); |
| 795 | break; |
| 796 | case kExternalShortArray: |
| 797 | case kExternalUnsignedShortArray: |
| 798 | __ movw(Operand(rcx, rbx, times_2, 0), rax); |
| 799 | break; |
| 800 | case kExternalIntArray: |
| 801 | case kExternalUnsignedIntArray: { |
| 802 | // We also need to explicitly check for +/-Infinity. These are |
| 803 | // converted to MIN_INT, but we need to be careful not to |
| 804 | // confuse with legal uses of MIN_INT. |
| 805 | Label not_infinity; |
| 806 | // This test would apparently detect both NaN and Infinity, |
| 807 | // but we've already checked for NaN using the FPU hardware |
| 808 | // above. |
| 809 | __ movzxwq(rdi, FieldOperand(rdx, HeapNumber::kValueOffset + 6)); |
| 810 | __ and_(rdi, Immediate(0x7FF0)); |
| 811 | __ cmpw(rdi, Immediate(0x7FF0)); |
| 812 | __ j(not_equal, ¬_infinity); |
| 813 | __ movq(rax, Immediate(0)); |
| 814 | __ bind(¬_infinity); |
| 815 | __ movl(Operand(rcx, rbx, times_4, 0), rax); |
| 816 | break; |
| 817 | } |
| 818 | default: |
| 819 | UNREACHABLE(); |
| 820 | break; |
| 821 | } |
| 822 | __ movq(rax, rdx); // Return the original value. |
| 823 | __ ret(0); |
| 824 | |
| 825 | __ bind(&is_nan); |
| 826 | __ ffree(); |
| 827 | __ fincstp(); |
| 828 | __ movq(rax, Immediate(0)); |
| 829 | switch (array_type) { |
| 830 | case kExternalByteArray: |
| 831 | case kExternalUnsignedByteArray: |
| 832 | __ movb(Operand(rcx, rbx, times_1, 0), rax); |
| 833 | break; |
| 834 | case kExternalShortArray: |
| 835 | case kExternalUnsignedShortArray: |
| 836 | __ movw(Operand(rcx, rbx, times_2, 0), rax); |
| 837 | break; |
| 838 | case kExternalIntArray: |
| 839 | case kExternalUnsignedIntArray: |
| 840 | __ movl(Operand(rcx, rbx, times_4, 0), rax); |
| 841 | break; |
| 842 | default: |
| 843 | UNREACHABLE(); |
| 844 | break; |
| 845 | } |
| 846 | __ movq(rax, rdx); // Return the original value. |
| 847 | __ ret(0); |
| 848 | } |
| 849 | |
| 850 | // Slow case: call runtime. |
| 851 | __ bind(&slow); |
| 852 | Generate(masm, ExternalReference(Runtime::kSetProperty)); |
| 853 | } |
| 854 | |
| 855 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 856 | void CallIC::Generate(MacroAssembler* masm, |
| 857 | int argc, |
| 858 | ExternalReference const& f) { |
| 859 | // Get the receiver of the function from the stack; 1 ~ return address. |
| 860 | __ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize)); |
| 861 | // Get the name of the function to call from the stack. |
| 862 | // 2 ~ receiver, return address. |
| 863 | __ movq(rbx, Operand(rsp, (argc + 2) * kPointerSize)); |
| 864 | |
| 865 | // Enter an internal frame. |
| 866 | __ EnterInternalFrame(); |
| 867 | |
| 868 | // Push the receiver and the name of the function. |
| 869 | __ push(rdx); |
| 870 | __ push(rbx); |
| 871 | |
| 872 | // Call the entry. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 873 | CEntryStub stub(1); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 874 | __ movq(rax, Immediate(2)); |
| 875 | __ movq(rbx, f); |
| 876 | __ CallStub(&stub); |
| 877 | |
| 878 | // Move result to rdi and exit the internal frame. |
| 879 | __ movq(rdi, rax); |
| 880 | __ LeaveInternalFrame(); |
| 881 | |
| 882 | // Check if the receiver is a global object of some sort. |
| 883 | Label invoke, global; |
| 884 | __ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize)); // receiver |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 885 | __ JumpIfSmi(rdx, &invoke); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 886 | __ CmpObjectType(rdx, JS_GLOBAL_OBJECT_TYPE, rcx); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 887 | __ j(equal, &global); |
kasperl@chromium.org | 68ac009 | 2009-07-09 06:00:35 +0000 | [diff] [blame] | 888 | __ CmpInstanceType(rcx, JS_BUILTINS_OBJECT_TYPE); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 889 | __ j(not_equal, &invoke); |
| 890 | |
| 891 | // Patch the receiver on the stack. |
| 892 | __ bind(&global); |
| 893 | __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset)); |
| 894 | __ movq(Operand(rsp, (argc + 1) * kPointerSize), rdx); |
| 895 | |
| 896 | // Invoke the function. |
| 897 | ParameterCount actual(argc); |
| 898 | __ bind(&invoke); |
| 899 | __ InvokeFunction(rdi, actual, JUMP_FUNCTION); |
| 900 | } |
| 901 | |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 902 | |
| 903 | // Defined in ic.cc. |
| 904 | Object* CallIC_Miss(Arguments args); |
| 905 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 906 | void CallIC::GenerateMegamorphic(MacroAssembler* masm, int argc) { |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 907 | // ----------- S t a t e ------------- |
| 908 | // rsp[0] return address |
| 909 | // rsp[8] argument argc |
| 910 | // rsp[16] argument argc - 1 |
| 911 | // ... |
| 912 | // rsp[argc * 8] argument 1 |
| 913 | // rsp[(argc + 1) * 8] argument 0 = reciever |
| 914 | // rsp[(argc + 2) * 8] function name |
| 915 | // ----------------------------------- |
| 916 | Label number, non_number, non_string, boolean, probe, miss; |
| 917 | |
| 918 | // Get the receiver of the function from the stack; 1 ~ return address. |
| 919 | __ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize)); |
| 920 | // Get the name of the function from the stack; 2 ~ return address, receiver |
| 921 | __ movq(rcx, Operand(rsp, (argc + 2) * kPointerSize)); |
| 922 | |
| 923 | // Probe the stub cache. |
| 924 | Code::Flags flags = |
| 925 | Code::ComputeFlags(Code::CALL_IC, NOT_IN_LOOP, MONOMORPHIC, NORMAL, argc); |
| 926 | StubCache::GenerateProbe(masm, flags, rdx, rcx, rbx, rax); |
| 927 | |
| 928 | // If the stub cache probing failed, the receiver might be a value. |
| 929 | // For value objects, we use the map of the prototype objects for |
| 930 | // the corresponding JSValue for the cache and that is what we need |
| 931 | // to probe. |
| 932 | // |
| 933 | // Check for number. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 934 | __ JumpIfSmi(rdx, &number); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 935 | __ CmpObjectType(rdx, HEAP_NUMBER_TYPE, rbx); |
| 936 | __ j(not_equal, &non_number); |
| 937 | __ bind(&number); |
| 938 | StubCompiler::GenerateLoadGlobalFunctionPrototype( |
| 939 | masm, Context::NUMBER_FUNCTION_INDEX, rdx); |
| 940 | __ jmp(&probe); |
| 941 | |
| 942 | // Check for string. |
| 943 | __ bind(&non_number); |
| 944 | __ CmpInstanceType(rbx, FIRST_NONSTRING_TYPE); |
| 945 | __ j(above_equal, &non_string); |
| 946 | StubCompiler::GenerateLoadGlobalFunctionPrototype( |
| 947 | masm, Context::STRING_FUNCTION_INDEX, rdx); |
| 948 | __ jmp(&probe); |
| 949 | |
| 950 | // Check for boolean. |
| 951 | __ bind(&non_string); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 952 | __ CompareRoot(rdx, Heap::kTrueValueRootIndex); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 953 | __ j(equal, &boolean); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 954 | __ CompareRoot(rdx, Heap::kFalseValueRootIndex); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 955 | __ j(not_equal, &miss); |
| 956 | __ bind(&boolean); |
| 957 | StubCompiler::GenerateLoadGlobalFunctionPrototype( |
| 958 | masm, Context::BOOLEAN_FUNCTION_INDEX, rdx); |
| 959 | |
| 960 | // Probe the stub cache for the value object. |
| 961 | __ bind(&probe); |
| 962 | StubCache::GenerateProbe(masm, flags, rdx, rcx, rbx, no_reg); |
| 963 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 964 | // Cache miss: Jump to runtime. |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 965 | __ bind(&miss); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 966 | Generate(masm, argc, ExternalReference(IC_Utility(kCallIC_Miss))); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 967 | } |
| 968 | |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 969 | |
| 970 | static void GenerateNormalHelper(MacroAssembler* masm, |
| 971 | int argc, |
| 972 | bool is_global_object, |
| 973 | Label* miss) { |
| 974 | // Search dictionary - put result in register edx. |
| 975 | GenerateDictionaryLoad(masm, miss, rax, rdx, rbx, rcx); |
| 976 | |
| 977 | // Move the result to register rdi and check that it isn't a smi. |
| 978 | __ movq(rdi, rdx); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 979 | __ JumpIfSmi(rdx, miss); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 980 | |
| 981 | // Check that the value is a JavaScript function. |
| 982 | __ CmpObjectType(rdx, JS_FUNCTION_TYPE, rdx); |
| 983 | __ j(not_equal, miss); |
| 984 | // Check that the function has been loaded. |
| 985 | __ testb(FieldOperand(rdx, Map::kBitField2Offset), |
| 986 | Immediate(1 << Map::kNeedsLoading)); |
| 987 | __ j(not_zero, miss); |
| 988 | |
| 989 | // Patch the receiver with the global proxy if necessary. |
| 990 | if (is_global_object) { |
| 991 | __ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize)); |
| 992 | __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset)); |
| 993 | __ movq(Operand(rsp, (argc + 1) * kPointerSize), rdx); |
| 994 | } |
| 995 | |
| 996 | // Invoke the function. |
| 997 | ParameterCount actual(argc); |
| 998 | __ InvokeFunction(rdi, actual, JUMP_FUNCTION); |
| 999 | } |
| 1000 | |
| 1001 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1002 | void CallIC::GenerateNormal(MacroAssembler* masm, int argc) { |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1003 | // ----------- S t a t e ------------- |
| 1004 | // rsp[0] return address |
| 1005 | // rsp[8] argument argc |
| 1006 | // rsp[16] argument argc - 1 |
| 1007 | // ... |
| 1008 | // rsp[argc * 8] argument 1 |
| 1009 | // rsp[(argc + 1) * 8] argument 0 = reciever |
| 1010 | // rsp[(argc + 2) * 8] function name |
| 1011 | // ----------------------------------- |
| 1012 | |
| 1013 | Label miss, global_object, non_global_object; |
| 1014 | |
| 1015 | // Get the receiver of the function from the stack. |
| 1016 | __ movq(rdx, Operand(rsp, (argc + 1) * kPointerSize)); |
| 1017 | // Get the name of the function from the stack. |
| 1018 | __ movq(rcx, Operand(rsp, (argc + 2) * kPointerSize)); |
| 1019 | |
| 1020 | // Check that the receiver isn't a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1021 | __ JumpIfSmi(rdx, &miss); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1022 | |
| 1023 | // Check that the receiver is a valid JS object. |
| 1024 | // Because there are so many map checks and type checks, do not |
| 1025 | // use CmpObjectType, but load map and type into registers. |
| 1026 | __ movq(rbx, FieldOperand(rdx, HeapObject::kMapOffset)); |
| 1027 | __ movb(rax, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
| 1028 | __ cmpb(rax, Immediate(FIRST_JS_OBJECT_TYPE)); |
| 1029 | __ j(below, &miss); |
| 1030 | |
| 1031 | // If this assert fails, we have to check upper bound too. |
| 1032 | ASSERT(LAST_TYPE == JS_FUNCTION_TYPE); |
| 1033 | |
| 1034 | // Check for access to global object. |
| 1035 | __ cmpb(rax, Immediate(JS_GLOBAL_OBJECT_TYPE)); |
| 1036 | __ j(equal, &global_object); |
| 1037 | __ cmpb(rax, Immediate(JS_BUILTINS_OBJECT_TYPE)); |
| 1038 | __ j(not_equal, &non_global_object); |
| 1039 | |
| 1040 | // Accessing global object: Load and invoke. |
| 1041 | __ bind(&global_object); |
| 1042 | // Check that the global object does not require access checks. |
| 1043 | __ movb(rbx, FieldOperand(rbx, Map::kBitFieldOffset)); |
| 1044 | __ testb(rbx, Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 1045 | __ j(not_equal, &miss); |
| 1046 | GenerateNormalHelper(masm, argc, true, &miss); |
| 1047 | |
| 1048 | // Accessing non-global object: Check for access to global proxy. |
| 1049 | Label global_proxy, invoke; |
| 1050 | __ bind(&non_global_object); |
| 1051 | __ cmpb(rax, Immediate(JS_GLOBAL_PROXY_TYPE)); |
| 1052 | __ j(equal, &global_proxy); |
| 1053 | // Check that the non-global, non-global-proxy object does not |
| 1054 | // require access checks. |
| 1055 | __ movb(rbx, FieldOperand(rbx, Map::kBitFieldOffset)); |
| 1056 | __ testb(rbx, Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 1057 | __ j(not_equal, &miss); |
| 1058 | __ bind(&invoke); |
| 1059 | GenerateNormalHelper(masm, argc, false, &miss); |
| 1060 | |
| 1061 | // Global object proxy access: Check access rights. |
| 1062 | __ bind(&global_proxy); |
| 1063 | __ CheckAccessGlobalProxy(rdx, rax, &miss); |
| 1064 | __ jmp(&invoke); |
| 1065 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1066 | // Cache miss: Jump to runtime. |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1067 | __ bind(&miss); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1068 | Generate(masm, argc, ExternalReference(IC_Utility(kCallIC_Miss))); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1069 | } |
| 1070 | |
| 1071 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1072 | // The offset from the inlined patch site to the start of the |
| 1073 | // inlined load instruction. |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1074 | const int LoadIC::kOffsetToLoadInstruction = 20; |
| 1075 | |
| 1076 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1077 | void LoadIC::ClearInlinedVersion(Address address) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1078 | // Reset the map check of the inlined inobject property load (if |
| 1079 | // present) to guarantee failure by holding an invalid map (the null |
| 1080 | // value). The offset can be patched to anything. |
| 1081 | PatchInlinedLoad(address, Heap::null_value(), kMaxInt); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1082 | } |
| 1083 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1084 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1085 | void LoadIC::Generate(MacroAssembler* masm, ExternalReference const& f) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1086 | // ----------- S t a t e ------------- |
| 1087 | // -- rcx : name |
| 1088 | // -- rsp[0] : return address |
| 1089 | // -- rsp[8] : receiver |
| 1090 | // ----------------------------------- |
| 1091 | |
| 1092 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 1093 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1094 | __ pop(rbx); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1095 | __ push(rax); // receiver |
| 1096 | __ push(rcx); // name |
| 1097 | __ push(rbx); // return address |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1098 | |
| 1099 | // Perform tail call to the entry. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1100 | __ TailCallRuntime(f, 2, 1); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1101 | } |
| 1102 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1103 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1104 | void LoadIC::GenerateArrayLength(MacroAssembler* masm) { |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 1105 | // ----------- S t a t e ------------- |
| 1106 | // -- rcx : name |
| 1107 | // -- rsp[0] : return address |
| 1108 | // -- rsp[8] : receiver |
| 1109 | // ----------------------------------- |
| 1110 | |
| 1111 | Label miss; |
| 1112 | |
| 1113 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 1114 | |
| 1115 | StubCompiler::GenerateLoadArrayLength(masm, rax, rdx, &miss); |
| 1116 | __ bind(&miss); |
| 1117 | StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1118 | } |
| 1119 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 1120 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1121 | void LoadIC::GenerateFunctionPrototype(MacroAssembler* masm) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1122 | // ----------- S t a t e ------------- |
| 1123 | // -- rcx : name |
| 1124 | // -- rsp[0] : return address |
| 1125 | // -- rsp[8] : receiver |
| 1126 | // ----------------------------------- |
| 1127 | |
| 1128 | Label miss; |
| 1129 | |
| 1130 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 1131 | |
| 1132 | StubCompiler::GenerateLoadFunctionPrototype(masm, rax, rdx, rbx, &miss); |
| 1133 | __ bind(&miss); |
| 1134 | StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1135 | } |
| 1136 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1137 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1138 | void LoadIC::GenerateMegamorphic(MacroAssembler* masm) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1139 | // ----------- S t a t e ------------- |
| 1140 | // -- rcx : name |
| 1141 | // -- rsp[0] : return address |
| 1142 | // -- rsp[8] : receiver |
| 1143 | // ----------------------------------- |
| 1144 | |
| 1145 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 1146 | |
| 1147 | // Probe the stub cache. |
| 1148 | Code::Flags flags = Code::ComputeFlags(Code::LOAD_IC, |
| 1149 | NOT_IN_LOOP, |
| 1150 | MONOMORPHIC); |
| 1151 | StubCache::GenerateProbe(masm, flags, rax, rcx, rbx, rdx); |
| 1152 | |
| 1153 | // Cache miss: Jump to runtime. |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1154 | StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1155 | } |
| 1156 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1157 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1158 | void LoadIC::GenerateMiss(MacroAssembler* masm) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1159 | // ----------- S t a t e ------------- |
| 1160 | // -- rcx : name |
| 1161 | // -- rsp[0] : return address |
| 1162 | // -- rsp[8] : receiver |
| 1163 | // ----------------------------------- |
| 1164 | |
| 1165 | Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss))); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1166 | } |
| 1167 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1168 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1169 | void LoadIC::GenerateNormal(MacroAssembler* masm) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1170 | // ----------- S t a t e ------------- |
| 1171 | // -- rcx : name |
| 1172 | // -- rsp[0] : return address |
| 1173 | // -- rsp[8] : receiver |
| 1174 | // ----------------------------------- |
| 1175 | |
| 1176 | Label miss, probe, global; |
| 1177 | |
| 1178 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 1179 | |
| 1180 | // Check that the receiver isn't a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1181 | __ JumpIfSmi(rax, &miss); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1182 | |
| 1183 | // Check that the receiver is a valid JS object. |
| 1184 | __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rbx); |
| 1185 | __ j(below, &miss); |
| 1186 | |
| 1187 | // If this assert fails, we have to check upper bound too. |
| 1188 | ASSERT(LAST_TYPE == JS_FUNCTION_TYPE); |
| 1189 | |
| 1190 | // Check for access to global object (unlikely). |
| 1191 | __ CmpInstanceType(rbx, JS_GLOBAL_PROXY_TYPE); |
| 1192 | __ j(equal, &global); |
| 1193 | |
| 1194 | // Check for non-global object that requires access check. |
| 1195 | __ testl(FieldOperand(rbx, Map::kBitFieldOffset), |
| 1196 | Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 1197 | __ j(not_zero, &miss); |
| 1198 | |
| 1199 | // Search the dictionary placing the result in eax. |
| 1200 | __ bind(&probe); |
| 1201 | GenerateDictionaryLoad(masm, &miss, rdx, rax, rbx, rcx); |
| 1202 | GenerateCheckNonObjectOrLoaded(masm, &miss, rax); |
| 1203 | __ ret(0); |
| 1204 | |
| 1205 | // Global object access: Check access rights. |
| 1206 | __ bind(&global); |
| 1207 | __ CheckAccessGlobalProxy(rax, rdx, &miss); |
| 1208 | __ jmp(&probe); |
| 1209 | |
| 1210 | // Cache miss: Restore receiver from stack and jump to runtime. |
| 1211 | __ bind(&miss); |
| 1212 | __ movq(rax, Operand(rsp, 1 * kPointerSize)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1213 | Generate(masm, ExternalReference(IC_Utility(kLoadIC_Miss))); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1214 | } |
| 1215 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1216 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1217 | void LoadIC::GenerateStringLength(MacroAssembler* masm) { |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 1218 | // ----------- S t a t e ------------- |
| 1219 | // -- rcx : name |
| 1220 | // -- rsp[0] : return address |
| 1221 | // -- rsp[8] : receiver |
| 1222 | // ----------------------------------- |
| 1223 | |
| 1224 | Label miss; |
| 1225 | |
| 1226 | __ movq(rax, Operand(rsp, kPointerSize)); |
| 1227 | |
| 1228 | StubCompiler::GenerateLoadStringLength(masm, rax, rdx, &miss); |
| 1229 | __ bind(&miss); |
| 1230 | StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1231 | } |
| 1232 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1233 | |
sgjesse@chromium.org | b9d7da1 | 2009-08-05 08:38:10 +0000 | [diff] [blame] | 1234 | |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1235 | bool LoadIC::PatchInlinedLoad(Address address, Object* map, int offset) { |
| 1236 | // The address of the instruction following the call. |
| 1237 | Address test_instruction_address = |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1238 | address + Assembler::kCallTargetAddressOffset; |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1239 | // If the instruction following the call is not a test eax, nothing |
| 1240 | // was inlined. |
| 1241 | if (*test_instruction_address != kTestEaxByte) return false; |
| 1242 | |
| 1243 | Address delta_address = test_instruction_address + 1; |
| 1244 | // The delta to the start of the map check instruction. |
| 1245 | int delta = *reinterpret_cast<int*>(delta_address); |
| 1246 | |
| 1247 | // The map address is the last 8 bytes of the 10-byte |
| 1248 | // immediate move instruction, so we add 2 to get the |
| 1249 | // offset to the last 8 bytes. |
| 1250 | Address map_address = test_instruction_address + delta + 2; |
| 1251 | *(reinterpret_cast<Object**>(map_address)) = map; |
| 1252 | |
| 1253 | // The offset is in the 32-bit displacement of a seven byte |
| 1254 | // memory-to-register move instruction (REX.W 0x88 ModR/M disp32), |
| 1255 | // so we add 3 to get the offset of the displacement. |
| 1256 | Address offset_address = |
| 1257 | test_instruction_address + delta + kOffsetToLoadInstruction + 3; |
| 1258 | *reinterpret_cast<int*>(offset_address) = offset - kHeapObjectTag; |
| 1259 | return true; |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | void StoreIC::Generate(MacroAssembler* masm, ExternalReference const& f) { |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1263 | // ----------- S t a t e ------------- |
| 1264 | // -- rax : value |
| 1265 | // -- rcx : name |
| 1266 | // -- rsp[0] : return address |
| 1267 | // -- rsp[8] : receiver |
| 1268 | // ----------------------------------- |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1269 | __ pop(rbx); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1270 | __ push(Operand(rsp, 0)); // receiver |
| 1271 | __ push(rcx); // name |
| 1272 | __ push(rax); // value |
| 1273 | __ push(rbx); // return address |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1274 | |
| 1275 | // Perform tail call to the entry. |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1276 | __ TailCallRuntime(f, 3, 1); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1277 | } |
| 1278 | |
| 1279 | void StoreIC::GenerateExtendStorage(MacroAssembler* masm) { |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1280 | // ----------- S t a t e ------------- |
| 1281 | // -- rax : value |
| 1282 | // -- rcx : Map (target of map transition) |
| 1283 | // -- rsp[0] : return address |
| 1284 | // -- rsp[8] : receiver |
| 1285 | // ----------------------------------- |
| 1286 | |
| 1287 | __ pop(rbx); |
| 1288 | __ push(Operand(rsp, 0)); // receiver |
| 1289 | __ push(rcx); // transition map |
| 1290 | __ push(rax); // value |
| 1291 | __ push(rbx); // return address |
| 1292 | |
| 1293 | // Perform tail call to the entry. |
| 1294 | __ TailCallRuntime( |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 1295 | ExternalReference(IC_Utility(kSharedStoreIC_ExtendStorage)), 3, 1); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1296 | } |
| 1297 | |
| 1298 | void StoreIC::GenerateMegamorphic(MacroAssembler* masm) { |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1299 | // ----------- S t a t e ------------- |
| 1300 | // -- rax : value |
| 1301 | // -- rcx : name |
| 1302 | // -- rsp[0] : return address |
| 1303 | // -- rsp[8] : receiver |
| 1304 | // ----------------------------------- |
| 1305 | |
| 1306 | // Get the receiver from the stack and probe the stub cache. |
| 1307 | __ movq(rdx, Operand(rsp, kPointerSize)); |
| 1308 | Code::Flags flags = Code::ComputeFlags(Code::STORE_IC, |
| 1309 | NOT_IN_LOOP, |
| 1310 | MONOMORPHIC); |
| 1311 | StubCache::GenerateProbe(masm, flags, rdx, rcx, rbx, no_reg); |
| 1312 | |
| 1313 | // Cache miss: Jump to runtime. |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1314 | Generate(masm, ExternalReference(IC_Utility(kStoreIC_Miss))); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1315 | } |
| 1316 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1317 | |
| 1318 | #undef __ |
| 1319 | |
| 1320 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1321 | } } // namespace v8::internal |