ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +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 | |
| 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_ARM) |
| 31 | |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 32 | #include "assembler-arm.h" |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 33 | #include "codegen.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 34 | #include "codegen-inl.h" |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 35 | #include "disasm.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 36 | #include "ic-inl.h" |
| 37 | #include "runtime.h" |
| 38 | #include "stub-cache.h" |
| 39 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 40 | namespace v8 { |
| 41 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 42 | |
| 43 | |
| 44 | // ---------------------------------------------------------------------------- |
| 45 | // Static IC stub generators. |
| 46 | // |
| 47 | |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 48 | #define __ ACCESS_MASM(masm) |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 49 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 50 | // Helper function used from LoadIC/CallIC GenerateNormal. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 51 | // receiver: Receiver. It is not clobbered if a jump to the miss label is |
| 52 | // done |
| 53 | // name: Property name. It is not clobbered if a jump to the miss label is |
| 54 | // done |
| 55 | // result: Register for the result. It is only updated if a jump to the miss |
| 56 | // label is not done. Can be the same as receiver or name clobbering |
| 57 | // one of these in the case of not jumping to the miss label. |
| 58 | // The three scratch registers need to be different from the receiver, name and |
| 59 | // result. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 60 | static void GenerateDictionaryLoad(MacroAssembler* masm, |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 61 | Label* miss, |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 62 | Register receiver, |
| 63 | Register name, |
| 64 | Register result, |
| 65 | Register scratch1, |
| 66 | Register scratch2, |
| 67 | Register scratch3, |
| 68 | DictionaryCheck check_dictionary) { |
| 69 | // Main use of the scratch registers. |
| 70 | // scratch1: Used to hold the property dictionary. |
| 71 | // scratch2: Used as temporary and to hold the capacity of the property |
| 72 | // dictionary. |
| 73 | // scratch3: Used as temporary. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 74 | |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 75 | Label done; |
| 76 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 77 | // Check for the absence of an interceptor. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 78 | // Load the map into scratch1. |
| 79 | __ ldr(scratch1, FieldMemOperand(receiver, JSObject::kMapOffset)); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 80 | |
| 81 | // Bail out if the receiver has a named interceptor. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 82 | __ ldrb(scratch2, FieldMemOperand(scratch1, Map::kBitFieldOffset)); |
| 83 | __ tst(scratch2, Operand(1 << Map::kHasNamedInterceptor)); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 84 | __ b(nz, miss); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 85 | |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 86 | // Bail out if we have a JS global proxy object. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 87 | __ ldrb(scratch2, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 88 | __ cmp(scratch2, Operand(JS_GLOBAL_PROXY_TYPE)); |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 89 | __ b(eq, miss); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 90 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 91 | // Possible work-around for http://crbug.com/16276. |
| 92 | // See also: http://codereview.chromium.org/155418. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 93 | __ cmp(scratch2, Operand(JS_GLOBAL_OBJECT_TYPE)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 94 | __ b(eq, miss); |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 95 | __ cmp(scratch2, Operand(JS_BUILTINS_OBJECT_TYPE)); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 96 | __ b(eq, miss); |
| 97 | |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 98 | // Load the properties array. |
| 99 | __ ldr(scratch1, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
| 100 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 101 | // Check that the properties array is a dictionary. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 102 | if (check_dictionary == CHECK_DICTIONARY) { |
| 103 | __ ldr(scratch2, FieldMemOperand(scratch1, HeapObject::kMapOffset)); |
| 104 | __ LoadRoot(ip, Heap::kHashTableMapRootIndex); |
| 105 | __ cmp(scratch2, ip); |
| 106 | __ b(ne, miss); |
| 107 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 108 | |
| 109 | // Compute the capacity mask. |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 110 | const int kCapacityOffset = StringDictionary::kHeaderSize + |
| 111 | StringDictionary::kCapacityIndex * kPointerSize; |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 112 | __ ldr(scratch2, FieldMemOperand(scratch1, kCapacityOffset)); |
| 113 | __ mov(scratch2, Operand(scratch2, ASR, kSmiTagSize)); // convert smi to int |
| 114 | __ sub(scratch2, scratch2, Operand(1)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 115 | |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 116 | const int kElementsStartOffset = StringDictionary::kHeaderSize + |
| 117 | StringDictionary::kElementsStartIndex * kPointerSize; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 118 | |
| 119 | // Generate an unrolled loop that performs a few probes before |
| 120 | // giving up. Measurements done on Gmail indicate that 2 probes |
| 121 | // cover ~93% of loads from dictionaries. |
| 122 | static const int kProbes = 4; |
| 123 | for (int i = 0; i < kProbes; i++) { |
| 124 | // Compute the masked index: (hash + i + i * i) & mask. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 125 | __ ldr(scratch3, FieldMemOperand(name, String::kHashFieldOffset)); |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 126 | if (i > 0) { |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 127 | // Add the probe offset (i + i * i) left shifted to avoid right shifting |
| 128 | // the hash in a separate instruction. The value hash + i + i * i is right |
| 129 | // shifted in the following and instruction. |
| 130 | ASSERT(StringDictionary::GetProbeOffset(i) < |
| 131 | 1 << (32 - String::kHashFieldOffset)); |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 132 | __ add(scratch3, scratch3, Operand( |
sgjesse@chromium.org | ac6aa17 | 2009-12-04 12:29:05 +0000 | [diff] [blame] | 133 | StringDictionary::GetProbeOffset(i) << String::kHashShift)); |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 134 | } |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 135 | __ and_(scratch3, scratch2, Operand(scratch3, LSR, String::kHashShift)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 136 | |
| 137 | // Scale the index by multiplying by the element size. |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 138 | ASSERT(StringDictionary::kEntrySize == 3); |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 139 | // scratch3 = scratch3 * 3. |
| 140 | __ add(scratch3, scratch3, Operand(scratch3, LSL, 1)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 141 | |
| 142 | // Check if the key is identical to the name. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 143 | __ add(scratch3, scratch1, Operand(scratch3, LSL, 2)); |
| 144 | __ ldr(ip, FieldMemOperand(scratch3, kElementsStartOffset)); |
| 145 | __ cmp(name, Operand(ip)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 146 | if (i != kProbes - 1) { |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 147 | __ b(eq, &done); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 148 | } else { |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 149 | __ b(ne, miss); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 150 | } |
| 151 | } |
| 152 | |
| 153 | // Check that the value is a normal property. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 154 | __ bind(&done); // scratch3 == scratch1 + 4 * index |
| 155 | __ ldr(scratch2, |
| 156 | FieldMemOperand(scratch3, kElementsStartOffset + 2 * kPointerSize)); |
| 157 | __ tst(scratch2, Operand(PropertyDetails::TypeField::mask() << kSmiTagSize)); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 158 | __ b(ne, miss); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 159 | |
| 160 | // Get the value at the masked, scaled index and return. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 161 | __ ldr(result, |
| 162 | FieldMemOperand(scratch3, kElementsStartOffset + 1 * kPointerSize)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 166 | static void GenerateNumberDictionaryLoad(MacroAssembler* masm, |
| 167 | Label* miss, |
| 168 | Register elements, |
| 169 | Register key, |
| 170 | Register t0, |
| 171 | Register t1, |
| 172 | Register t2) { |
| 173 | // Register use: |
| 174 | // |
| 175 | // elements - holds the slow-case elements of the receiver and is unchanged. |
| 176 | // |
| 177 | // key - holds the smi key on entry and is unchanged if a branch is |
| 178 | // performed to the miss label. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 179 | // Holds the result on exit if the load succeeded. |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 180 | // |
| 181 | // Scratch registers: |
| 182 | // |
| 183 | // t0 - holds the untagged key on entry and holds the hash once computed. |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 184 | // |
| 185 | // t1 - used to hold the capacity mask of the dictionary |
| 186 | // |
| 187 | // t2 - used for the index into the dictionary. |
| 188 | Label done; |
| 189 | |
| 190 | // Compute the hash code from the untagged key. This must be kept in sync |
| 191 | // with ComputeIntegerHash in utils.h. |
| 192 | // |
| 193 | // hash = ~hash + (hash << 15); |
| 194 | __ mvn(t1, Operand(t0)); |
| 195 | __ add(t0, t1, Operand(t0, LSL, 15)); |
| 196 | // hash = hash ^ (hash >> 12); |
| 197 | __ eor(t0, t0, Operand(t0, LSR, 12)); |
| 198 | // hash = hash + (hash << 2); |
| 199 | __ add(t0, t0, Operand(t0, LSL, 2)); |
| 200 | // hash = hash ^ (hash >> 4); |
| 201 | __ eor(t0, t0, Operand(t0, LSR, 4)); |
| 202 | // hash = hash * 2057; |
| 203 | __ mov(t1, Operand(2057)); |
| 204 | __ mul(t0, t0, t1); |
| 205 | // hash = hash ^ (hash >> 16); |
| 206 | __ eor(t0, t0, Operand(t0, LSR, 16)); |
| 207 | |
| 208 | // Compute the capacity mask. |
| 209 | __ ldr(t1, FieldMemOperand(elements, NumberDictionary::kCapacityOffset)); |
| 210 | __ mov(t1, Operand(t1, ASR, kSmiTagSize)); // convert smi to int |
| 211 | __ sub(t1, t1, Operand(1)); |
| 212 | |
| 213 | // Generate an unrolled loop that performs a few probes before giving up. |
| 214 | static const int kProbes = 4; |
| 215 | for (int i = 0; i < kProbes; i++) { |
| 216 | // Use t2 for index calculations and keep the hash intact in t0. |
| 217 | __ mov(t2, t0); |
| 218 | // Compute the masked index: (hash + i + i * i) & mask. |
| 219 | if (i > 0) { |
| 220 | __ add(t2, t2, Operand(NumberDictionary::GetProbeOffset(i))); |
| 221 | } |
| 222 | __ and_(t2, t2, Operand(t1)); |
| 223 | |
| 224 | // Scale the index by multiplying by the element size. |
| 225 | ASSERT(NumberDictionary::kEntrySize == 3); |
| 226 | __ add(t2, t2, Operand(t2, LSL, 1)); // t2 = t2 * 3 |
| 227 | |
| 228 | // Check if the key is identical to the name. |
| 229 | __ add(t2, elements, Operand(t2, LSL, kPointerSizeLog2)); |
| 230 | __ ldr(ip, FieldMemOperand(t2, NumberDictionary::kElementsStartOffset)); |
| 231 | __ cmp(key, Operand(ip)); |
| 232 | if (i != kProbes - 1) { |
| 233 | __ b(eq, &done); |
| 234 | } else { |
| 235 | __ b(ne, miss); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | __ bind(&done); |
| 240 | // Check that the value is a normal property. |
| 241 | // t2: elements + (index * kPointerSize) |
| 242 | const int kDetailsOffset = |
| 243 | NumberDictionary::kElementsStartOffset + 2 * kPointerSize; |
| 244 | __ ldr(t1, FieldMemOperand(t2, kDetailsOffset)); |
| 245 | __ tst(t1, Operand(Smi::FromInt(PropertyDetails::TypeField::mask()))); |
| 246 | __ b(ne, miss); |
| 247 | |
| 248 | // Get the value at the masked, scaled index and return. |
| 249 | const int kValueOffset = |
| 250 | NumberDictionary::kElementsStartOffset + kPointerSize; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 251 | __ ldr(key, FieldMemOperand(t2, kValueOffset)); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 255 | void LoadIC::GenerateArrayLength(MacroAssembler* masm) { |
| 256 | // ----------- S t a t e ------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 257 | // -- r2 : name |
| 258 | // -- lr : return address |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 259 | // -- r0 : receiver |
| 260 | // -- sp[0] : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 261 | // ----------------------------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 262 | Label miss; |
| 263 | |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 264 | StubCompiler::GenerateLoadArrayLength(masm, r0, r3, &miss); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 265 | __ bind(&miss); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 266 | StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 270 | void LoadIC::GenerateStringLength(MacroAssembler* masm) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 271 | // ----------- S t a t e ------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 272 | // -- r2 : name |
| 273 | // -- lr : return address |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 274 | // -- r0 : receiver |
| 275 | // -- sp[0] : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 276 | // ----------------------------------- |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 277 | Label miss; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 278 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 279 | StubCompiler::GenerateLoadStringLength(masm, r0, r1, r3, &miss); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 280 | // Cache miss: Jump to runtime. |
| 281 | __ bind(&miss); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 282 | StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | |
| 286 | void LoadIC::GenerateFunctionPrototype(MacroAssembler* masm) { |
| 287 | // ----------- S t a t e ------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 288 | // -- r2 : name |
| 289 | // -- lr : return address |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 290 | // -- r0 : receiver |
| 291 | // -- sp[0] : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 292 | // ----------------------------------- |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 293 | Label miss; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 294 | |
kasperl@chromium.org | defbd10 | 2009-07-13 14:04:26 +0000 | [diff] [blame] | 295 | StubCompiler::GenerateLoadFunctionPrototype(masm, r0, r1, r3, &miss); |
| 296 | __ bind(&miss); |
| 297 | StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | |
| 301 | // Defined in ic.cc. |
| 302 | Object* CallIC_Miss(Arguments args); |
| 303 | |
| 304 | void CallIC::GenerateMegamorphic(MacroAssembler* masm, int argc) { |
| 305 | // ----------- S t a t e ------------- |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 306 | // -- r2 : name |
| 307 | // -- lr : return address |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 308 | // ----------------------------------- |
| 309 | Label number, non_number, non_string, boolean, probe, miss; |
| 310 | |
mads.s.ager | 31e7138 | 2008-08-13 09:32:07 +0000 | [diff] [blame] | 311 | // Get the receiver of the function from the stack into r1. |
| 312 | __ ldr(r1, MemOperand(sp, argc * kPointerSize)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 313 | |
| 314 | // Probe the stub cache. |
| 315 | Code::Flags flags = |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 316 | Code::ComputeFlags(Code::CALL_IC, NOT_IN_LOOP, MONOMORPHIC, NORMAL, argc); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 317 | StubCache::GenerateProbe(masm, flags, r1, r2, r3, no_reg); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 318 | |
| 319 | // If the stub cache probing failed, the receiver might be a value. |
| 320 | // For value objects, we use the map of the prototype objects for |
| 321 | // the corresponding JSValue for the cache and that is what we need |
| 322 | // to probe. |
| 323 | // |
| 324 | // Check for number. |
| 325 | __ tst(r1, Operand(kSmiTagMask)); |
| 326 | __ b(eq, &number); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 327 | __ CompareObjectType(r1, r3, r3, HEAP_NUMBER_TYPE); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 328 | __ b(ne, &non_number); |
| 329 | __ bind(&number); |
| 330 | StubCompiler::GenerateLoadGlobalFunctionPrototype( |
| 331 | masm, Context::NUMBER_FUNCTION_INDEX, r1); |
| 332 | __ b(&probe); |
| 333 | |
| 334 | // Check for string. |
| 335 | __ bind(&non_number); |
| 336 | __ cmp(r3, Operand(FIRST_NONSTRING_TYPE)); |
| 337 | __ b(hs, &non_string); |
| 338 | StubCompiler::GenerateLoadGlobalFunctionPrototype( |
| 339 | masm, Context::STRING_FUNCTION_INDEX, r1); |
| 340 | __ b(&probe); |
| 341 | |
| 342 | // Check for boolean. |
| 343 | __ bind(&non_string); |
ager@chromium.org | ab99eea | 2009-08-25 07:05:41 +0000 | [diff] [blame] | 344 | __ LoadRoot(ip, Heap::kTrueValueRootIndex); |
| 345 | __ cmp(r1, ip); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 346 | __ b(eq, &boolean); |
ager@chromium.org | ab99eea | 2009-08-25 07:05:41 +0000 | [diff] [blame] | 347 | __ LoadRoot(ip, Heap::kFalseValueRootIndex); |
| 348 | __ cmp(r1, ip); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 349 | __ b(ne, &miss); |
| 350 | __ bind(&boolean); |
| 351 | StubCompiler::GenerateLoadGlobalFunctionPrototype( |
| 352 | masm, Context::BOOLEAN_FUNCTION_INDEX, r1); |
| 353 | |
| 354 | // Probe the stub cache for the value object. |
| 355 | __ bind(&probe); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 356 | StubCache::GenerateProbe(masm, flags, r1, r2, r3, no_reg); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 357 | |
| 358 | // Cache miss: Jump to runtime. |
| 359 | __ bind(&miss); |
sgjesse@chromium.org | 846fb74 | 2009-12-18 08:56:33 +0000 | [diff] [blame] | 360 | GenerateMiss(masm, argc); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 364 | static void GenerateNormalHelper(MacroAssembler* masm, |
| 365 | int argc, |
| 366 | bool is_global_object, |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 367 | Label* miss, |
| 368 | Register scratch) { |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 369 | // Search dictionary - put result in register r1. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 370 | GenerateDictionaryLoad(masm, miss, r1, r2, r1, r0, r3, r4, CHECK_DICTIONARY); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 371 | |
| 372 | // Check that the value isn't a smi. |
| 373 | __ tst(r1, Operand(kSmiTagMask)); |
| 374 | __ b(eq, miss); |
| 375 | |
| 376 | // Check that the value is a JSFunction. |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 377 | __ CompareObjectType(r1, scratch, scratch, JS_FUNCTION_TYPE); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 378 | __ b(ne, miss); |
| 379 | |
| 380 | // Patch the receiver with the global proxy if necessary. |
| 381 | if (is_global_object) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 382 | __ ldr(r0, MemOperand(sp, argc * kPointerSize)); |
| 383 | __ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalReceiverOffset)); |
| 384 | __ str(r0, MemOperand(sp, argc * kPointerSize)); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 385 | } |
| 386 | |
| 387 | // Invoke the function. |
| 388 | ParameterCount actual(argc); |
| 389 | __ InvokeFunction(r1, actual, JUMP_FUNCTION); |
| 390 | } |
| 391 | |
| 392 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 393 | void CallIC::GenerateNormal(MacroAssembler* masm, int argc) { |
| 394 | // ----------- S t a t e ------------- |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 395 | // -- r2 : name |
| 396 | // -- lr : return address |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 397 | // ----------------------------------- |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 398 | Label miss, global_object, non_global_object; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 399 | |
mads.s.ager | 31e7138 | 2008-08-13 09:32:07 +0000 | [diff] [blame] | 400 | // Get the receiver of the function from the stack into r1. |
| 401 | __ ldr(r1, MemOperand(sp, argc * kPointerSize)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 402 | |
| 403 | // Check that the receiver isn't a smi. |
| 404 | __ tst(r1, Operand(kSmiTagMask)); |
| 405 | __ b(eq, &miss); |
| 406 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 407 | // Check that the receiver is a valid JS object. Put the map in r3. |
| 408 | __ CompareObjectType(r1, r3, r0, FIRST_JS_OBJECT_TYPE); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 409 | __ b(lt, &miss); |
| 410 | |
| 411 | // If this assert fails, we have to check upper bound too. |
| 412 | ASSERT(LAST_TYPE == JS_FUNCTION_TYPE); |
| 413 | |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 414 | // Check for access to global object. |
| 415 | __ cmp(r0, Operand(JS_GLOBAL_OBJECT_TYPE)); |
| 416 | __ b(eq, &global_object); |
| 417 | __ cmp(r0, Operand(JS_BUILTINS_OBJECT_TYPE)); |
| 418 | __ b(ne, &non_global_object); |
| 419 | |
| 420 | // Accessing global object: Load and invoke. |
| 421 | __ bind(&global_object); |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 422 | // Check that the global object does not require access checks. |
| 423 | __ ldrb(r3, FieldMemOperand(r3, Map::kBitFieldOffset)); |
| 424 | __ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded)); |
| 425 | __ b(ne, &miss); |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 426 | GenerateNormalHelper(masm, argc, true, &miss, r4); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 427 | |
| 428 | // Accessing non-global object: Check for access to global proxy. |
| 429 | Label global_proxy, invoke; |
| 430 | __ bind(&non_global_object); |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 431 | __ cmp(r0, Operand(JS_GLOBAL_PROXY_TYPE)); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 432 | __ b(eq, &global_proxy); |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 433 | // Check that the non-global, non-global-proxy object does not |
| 434 | // require access checks. |
| 435 | __ ldrb(r3, FieldMemOperand(r3, Map::kBitFieldOffset)); |
| 436 | __ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded)); |
| 437 | __ b(ne, &miss); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 438 | __ bind(&invoke); |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 439 | GenerateNormalHelper(masm, argc, false, &miss, r4); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 440 | |
| 441 | // Global object access: Check access rights. |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 442 | __ bind(&global_proxy); |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 443 | __ CheckAccessGlobalProxy(r1, r0, &miss); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 444 | __ b(&invoke); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 445 | |
mads.s.ager@gmail.com | 769cc96 | 2008-08-06 10:02:49 +0000 | [diff] [blame] | 446 | // Cache miss: Jump to runtime. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 447 | __ bind(&miss); |
sgjesse@chromium.org | 846fb74 | 2009-12-18 08:56:33 +0000 | [diff] [blame] | 448 | GenerateMiss(masm, argc); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 449 | } |
| 450 | |
| 451 | |
sgjesse@chromium.org | 846fb74 | 2009-12-18 08:56:33 +0000 | [diff] [blame] | 452 | void CallIC::GenerateMiss(MacroAssembler* masm, int argc) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 453 | // ----------- S t a t e ------------- |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 454 | // -- r2 : name |
| 455 | // -- lr : return address |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 456 | // ----------------------------------- |
| 457 | |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 458 | // Get the receiver of the function from the stack. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 459 | __ ldr(r3, MemOperand(sp, argc * kPointerSize)); |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 460 | |
| 461 | __ EnterInternalFrame(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 462 | |
| 463 | // Push the receiver and the name of the function. |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 464 | __ Push(r3, r2); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 465 | |
| 466 | // Call the entry. |
mads.s.ager | 31e7138 | 2008-08-13 09:32:07 +0000 | [diff] [blame] | 467 | __ mov(r0, Operand(2)); |
sgjesse@chromium.org | 846fb74 | 2009-12-18 08:56:33 +0000 | [diff] [blame] | 468 | __ mov(r1, Operand(ExternalReference(IC_Utility(kCallIC_Miss)))); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 469 | |
ager@chromium.org | a1645e2 | 2009-09-09 19:27:10 +0000 | [diff] [blame] | 470 | CEntryStub stub(1); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 471 | __ CallStub(&stub); |
| 472 | |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 473 | // Move result to r1 and leave the internal frame. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 474 | __ mov(r1, Operand(r0)); |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 475 | __ LeaveInternalFrame(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 476 | |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 477 | // Check if the receiver is a global object of some sort. |
| 478 | Label invoke, global; |
| 479 | __ ldr(r2, MemOperand(sp, argc * kPointerSize)); // receiver |
| 480 | __ tst(r2, Operand(kSmiTagMask)); |
| 481 | __ b(eq, &invoke); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 482 | __ CompareObjectType(r2, r3, r3, JS_GLOBAL_OBJECT_TYPE); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 483 | __ b(eq, &global); |
| 484 | __ cmp(r3, Operand(JS_BUILTINS_OBJECT_TYPE)); |
| 485 | __ b(ne, &invoke); |
| 486 | |
| 487 | // Patch the receiver on the stack. |
| 488 | __ bind(&global); |
| 489 | __ ldr(r2, FieldMemOperand(r2, GlobalObject::kGlobalReceiverOffset)); |
| 490 | __ str(r2, MemOperand(sp, argc * kPointerSize)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 491 | |
mads.s.ager@gmail.com | 769cc96 | 2008-08-06 10:02:49 +0000 | [diff] [blame] | 492 | // Invoke the function. |
| 493 | ParameterCount actual(argc); |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 494 | __ bind(&invoke); |
mads.s.ager@gmail.com | 769cc96 | 2008-08-06 10:02:49 +0000 | [diff] [blame] | 495 | __ InvokeFunction(r1, actual, JUMP_FUNCTION); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | |
| 499 | // Defined in ic.cc. |
| 500 | Object* LoadIC_Miss(Arguments args); |
| 501 | |
| 502 | void LoadIC::GenerateMegamorphic(MacroAssembler* masm) { |
| 503 | // ----------- S t a t e ------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 504 | // -- r2 : name |
| 505 | // -- lr : return address |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 506 | // -- r0 : receiver |
| 507 | // -- sp[0] : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 508 | // ----------------------------------- |
| 509 | |
| 510 | // Probe the stub cache. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 511 | Code::Flags flags = Code::ComputeFlags(Code::LOAD_IC, |
| 512 | NOT_IN_LOOP, |
| 513 | MONOMORPHIC); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 514 | StubCache::GenerateProbe(masm, flags, r0, r2, r3, no_reg); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 515 | |
| 516 | // Cache miss: Jump to runtime. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 517 | GenerateMiss(masm); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | |
| 521 | void LoadIC::GenerateNormal(MacroAssembler* masm) { |
| 522 | // ----------- S t a t e ------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 523 | // -- r2 : name |
| 524 | // -- lr : return address |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 525 | // -- r0 : receiver |
| 526 | // -- sp[0] : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 527 | // ----------------------------------- |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 528 | Label miss, probe, global; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 529 | |
| 530 | // Check that the receiver isn't a smi. |
| 531 | __ tst(r0, Operand(kSmiTagMask)); |
| 532 | __ b(eq, &miss); |
| 533 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 534 | // Check that the receiver is a valid JS object. Put the map in r3. |
| 535 | __ CompareObjectType(r0, r3, r1, FIRST_JS_OBJECT_TYPE); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 536 | __ b(lt, &miss); |
| 537 | // If this assert fails, we have to check upper bound too. |
| 538 | ASSERT(LAST_TYPE == JS_FUNCTION_TYPE); |
| 539 | |
| 540 | // Check for access to global object (unlikely). |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 541 | __ cmp(r1, Operand(JS_GLOBAL_PROXY_TYPE)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 542 | __ b(eq, &global); |
| 543 | |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 544 | // Check for non-global object that requires access check. |
| 545 | __ ldrb(r3, FieldMemOperand(r3, Map::kBitFieldOffset)); |
| 546 | __ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded)); |
| 547 | __ b(ne, &miss); |
| 548 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 549 | __ bind(&probe); |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 550 | GenerateDictionaryLoad(masm, &miss, r0, r2, r0, r1, r3, r4, CHECK_DICTIONARY); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 551 | __ Ret(); |
| 552 | |
| 553 | // Global object access: Check access rights. |
| 554 | __ bind(&global); |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 555 | __ CheckAccessGlobalProxy(r0, r1, &miss); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 556 | __ b(&probe); |
| 557 | |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 558 | // Cache miss: Jump to runtime. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 559 | __ bind(&miss); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 560 | GenerateMiss(masm); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | |
| 564 | void LoadIC::GenerateMiss(MacroAssembler* masm) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 565 | // ----------- S t a t e ------------- |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 566 | // -- r2 : name |
| 567 | // -- lr : return address |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 568 | // -- r0 : receiver |
| 569 | // -- sp[0] : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 570 | // ----------------------------------- |
| 571 | |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 572 | __ mov(r3, r0); |
| 573 | __ Push(r3, r2); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 574 | |
mads.s.ager | 31e7138 | 2008-08-13 09:32:07 +0000 | [diff] [blame] | 575 | // Perform tail call to the entry. |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 576 | ExternalReference ref = ExternalReference(IC_Utility(kLoadIC_Miss)); |
| 577 | __ TailCallExternalReference(ref, 2, 1); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 581 | static inline bool IsInlinedICSite(Address address, |
| 582 | Address* inline_end_address) { |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 583 | // If the instruction after the call site is not the pseudo instruction nop1 |
| 584 | // then this is not related to an inlined in-object property load. The nop1 |
| 585 | // instruction is located just after the call to the IC in the deferred code |
| 586 | // handling the miss in the inlined code. After the nop1 instruction there is |
| 587 | // a branch instruction for jumping back from the deferred code. |
| 588 | Address address_after_call = address + Assembler::kCallTargetAddressOffset; |
| 589 | Instr instr_after_call = Assembler::instr_at(address_after_call); |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 590 | if (!Assembler::IsNop(instr_after_call, PROPERTY_ACCESS_INLINED)) { |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 591 | return false; |
| 592 | } |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 593 | Address address_after_nop = address_after_call + Assembler::kInstrSize; |
| 594 | Instr instr_after_nop = Assembler::instr_at(address_after_nop); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 595 | // There may be some reg-reg move and frame merging code to skip over before |
| 596 | // the branch back from the DeferredReferenceGetKeyedValue code to the inlined |
| 597 | // code. |
| 598 | while (!Assembler::IsBranch(instr_after_nop)) { |
| 599 | address_after_nop += Assembler::kInstrSize; |
| 600 | instr_after_nop = Assembler::instr_at(address_after_nop); |
| 601 | } |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 602 | |
| 603 | // Find the end of the inlined code for handling the load. |
| 604 | int b_offset = |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 605 | Assembler::GetBranchOffset(instr_after_nop) + Assembler::kPcLoadDelta; |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 606 | ASSERT(b_offset < 0); // Jumping back from deferred code. |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 607 | *inline_end_address = address_after_nop + b_offset; |
| 608 | |
| 609 | return true; |
| 610 | } |
| 611 | |
| 612 | |
| 613 | void LoadIC::ClearInlinedVersion(Address address) { |
| 614 | // Reset the map check of the inlined in-object property load (if present) to |
| 615 | // guarantee failure by holding an invalid map (the null value). The offset |
| 616 | // can be patched to anything. |
| 617 | PatchInlinedLoad(address, Heap::null_value(), 0); |
| 618 | } |
| 619 | |
| 620 | |
| 621 | bool LoadIC::PatchInlinedLoad(Address address, Object* map, int offset) { |
| 622 | // Find the end of the inlined code for handling the load if this is an |
| 623 | // inlined IC call site. |
| 624 | Address inline_end_address; |
| 625 | if (!IsInlinedICSite(address, &inline_end_address)) return false; |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 626 | |
| 627 | // Patch the offset of the property load instruction (ldr r0, [r1, #+XXX]). |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 628 | // The immediate must be representable in 12 bits. |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 629 | ASSERT((JSObject::kMaxInstanceSize - JSObject::kHeaderSize) < (1 << 12)); |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 630 | Address ldr_property_instr_address = |
| 631 | inline_end_address - Assembler::kInstrSize; |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 632 | ASSERT(Assembler::IsLdrRegisterImmediate( |
| 633 | Assembler::instr_at(ldr_property_instr_address))); |
| 634 | Instr ldr_property_instr = Assembler::instr_at(ldr_property_instr_address); |
| 635 | ldr_property_instr = Assembler::SetLdrRegisterImmediateOffset( |
| 636 | ldr_property_instr, offset - kHeapObjectTag); |
| 637 | Assembler::instr_at_put(ldr_property_instr_address, ldr_property_instr); |
| 638 | |
| 639 | // Indicate that code has changed. |
| 640 | CPU::FlushICache(ldr_property_instr_address, 1 * Assembler::kInstrSize); |
| 641 | |
| 642 | // Patch the map check. |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 643 | Address ldr_map_instr_address = |
| 644 | inline_end_address - 4 * Assembler::kInstrSize; |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 645 | Assembler::set_target_address_at(ldr_map_instr_address, |
| 646 | reinterpret_cast<Address>(map)); |
| 647 | return true; |
| 648 | } |
| 649 | |
| 650 | |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 651 | void KeyedLoadIC::ClearInlinedVersion(Address address) { |
| 652 | // Reset the map check of the inlined keyed load (if present) to |
| 653 | // guarantee failure by holding an invalid map (the null value). |
| 654 | PatchInlinedLoad(address, Heap::null_value()); |
ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 655 | } |
christian.plesner.hansen@gmail.com | 37abdec | 2009-01-06 14:43:28 +0000 | [diff] [blame] | 656 | |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 657 | |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 658 | bool KeyedLoadIC::PatchInlinedLoad(Address address, Object* map) { |
| 659 | Address inline_end_address; |
| 660 | if (!IsInlinedICSite(address, &inline_end_address)) return false; |
| 661 | |
| 662 | // Patch the map check. |
| 663 | Address ldr_map_instr_address = |
vegorov@chromium.org | dff694e | 2010-05-17 09:10:26 +0000 | [diff] [blame] | 664 | inline_end_address - |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 665 | (CodeGenerator::kInlinedKeyedLoadInstructionsAfterPatch * |
| 666 | Assembler::kInstrSize); |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 667 | Assembler::set_target_address_at(ldr_map_instr_address, |
| 668 | reinterpret_cast<Address>(map)); |
| 669 | return true; |
| 670 | } |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 671 | |
| 672 | |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 673 | void KeyedStoreIC::ClearInlinedVersion(Address address) { |
| 674 | // Insert null as the elements map to check for. This will make |
| 675 | // sure that the elements fast-case map check fails so that control |
| 676 | // flows to the IC instead of the inlined version. |
| 677 | PatchInlinedStore(address, Heap::null_value()); |
| 678 | } |
| 679 | |
| 680 | |
| 681 | void KeyedStoreIC::RestoreInlinedVersion(Address address) { |
| 682 | // Restore the fast-case elements map check so that the inlined |
| 683 | // version can be used again. |
| 684 | PatchInlinedStore(address, Heap::fixed_array_map()); |
| 685 | } |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 686 | |
| 687 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 688 | bool KeyedStoreIC::PatchInlinedStore(Address address, Object* map) { |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 689 | // Find the end of the inlined code for handling the store if this is an |
| 690 | // inlined IC call site. |
| 691 | Address inline_end_address; |
| 692 | if (!IsInlinedICSite(address, &inline_end_address)) return false; |
| 693 | |
| 694 | // Patch the map check. |
| 695 | Address ldr_map_instr_address = |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 696 | inline_end_address - |
| 697 | (CodeGenerator::kInlinedKeyedStoreInstructionsAfterPatch * |
| 698 | Assembler::kInstrSize); |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 699 | Assembler::set_target_address_at(ldr_map_instr_address, |
| 700 | reinterpret_cast<Address>(map)); |
| 701 | return true; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 702 | } |
| 703 | |
christian.plesner.hansen@gmail.com | 37abdec | 2009-01-06 14:43:28 +0000 | [diff] [blame] | 704 | |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 705 | Object* KeyedLoadIC_Miss(Arguments args); |
| 706 | |
| 707 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 708 | void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) { |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 709 | // ---------- S t a t e -------------- |
| 710 | // -- lr : return address |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 711 | // -- r0 : key |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 712 | // -- r1 : receiver |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 713 | // ----------------------------------- |
| 714 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 715 | __ Push(r1, r0); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 716 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 717 | ExternalReference ref = ExternalReference(IC_Utility(kKeyedLoadIC_Miss)); |
| 718 | __ TailCallExternalReference(ref, 2, 1); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | |
| 722 | void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) { |
| 723 | // ---------- S t a t e -------------- |
| 724 | // -- lr : return address |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 725 | // -- r0 : key |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 726 | // -- r1 : receiver |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 727 | // ----------------------------------- |
| 728 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 729 | __ Push(r1, r0); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 730 | |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 731 | __ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 732 | } |
| 733 | |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 734 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 735 | void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 736 | // ---------- S t a t e -------------- |
| 737 | // -- lr : return address |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 738 | // -- r0 : key |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 739 | // -- r1 : receiver |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 740 | // ----------------------------------- |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 741 | Label slow, check_string, index_smi, index_string; |
| 742 | Label check_pixel_array, probe_dictionary, check_number_dictionary; |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 743 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 744 | Register key = r0; |
| 745 | Register receiver = r1; |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 746 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 747 | // Check that the object isn't a smi. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 748 | __ BranchOnSmi(receiver, &slow); |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 749 | // Get the map of the receiver. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 750 | __ ldr(r2, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
kasperl@chromium.org | eac059f | 2010-01-25 11:02:06 +0000 | [diff] [blame] | 751 | // Check bit field. |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 752 | __ ldrb(r3, FieldMemOperand(r2, Map::kBitFieldOffset)); |
kasperl@chromium.org | eac059f | 2010-01-25 11:02:06 +0000 | [diff] [blame] | 753 | __ tst(r3, Operand(kSlowCaseBitFieldMask)); |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 754 | __ b(ne, &slow); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 755 | // Check that the object is some kind of JS object EXCEPT JS Value type. |
| 756 | // In the case that the object is a value-wrapper object, |
| 757 | // we enter the runtime system to make sure that indexing into string |
| 758 | // objects work as intended. |
| 759 | ASSERT(JS_OBJECT_TYPE > JS_VALUE_TYPE); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 760 | __ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset)); |
| 761 | __ cmp(r2, Operand(JS_OBJECT_TYPE)); |
| 762 | __ b(lt, &slow); |
| 763 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 764 | // Check that the key is a smi. |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 765 | __ BranchOnNotSmi(key, &check_string); |
| 766 | __ bind(&index_smi); |
| 767 | // Now the key is known to be a smi. This place is also jumped to from below |
| 768 | // where a numeric string is converted to a smi. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 769 | __ ldr(r4, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 770 | // Check that the object is in fast mode (not dictionary). |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 771 | __ ldr(r3, FieldMemOperand(r4, HeapObject::kMapOffset)); |
ager@chromium.org | ab99eea | 2009-08-25 07:05:41 +0000 | [diff] [blame] | 772 | __ LoadRoot(ip, Heap::kFixedArrayMapRootIndex); |
| 773 | __ cmp(r3, ip); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 774 | __ b(ne, &check_pixel_array); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 775 | // Check that the key (index) is within bounds. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 776 | __ ldr(r3, FieldMemOperand(r4, FixedArray::kLengthOffset)); |
| 777 | __ cmp(key, Operand(r3)); |
fschneider@chromium.org | 013f3e1 | 2010-04-26 13:27:52 +0000 | [diff] [blame] | 778 | __ b(hs, &slow); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 779 | // Fast case: Do the load. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 780 | __ add(r3, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 781 | // The key is a smi. |
| 782 | ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2); |
| 783 | __ ldr(r2, MemOperand(r3, key, LSL, kPointerSizeLog2 - kSmiTagSize)); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 784 | __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 785 | __ cmp(r2, ip); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 786 | // In case the loaded value is the_hole we have to consult GetProperty |
| 787 | // to ensure the prototype chain is searched. |
| 788 | __ b(eq, &slow); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 789 | __ mov(r0, r2); |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 790 | __ IncrementCounter(&Counters::keyed_load_generic_smi, 1, r2, r3); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 791 | __ Ret(); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 792 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 793 | // Check whether the elements is a pixel array. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 794 | // r0: key |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 795 | // r3: elements map |
| 796 | // r4: elements |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 797 | __ bind(&check_pixel_array); |
| 798 | __ LoadRoot(ip, Heap::kPixelArrayMapRootIndex); |
| 799 | __ cmp(r3, ip); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 800 | __ b(ne, &check_number_dictionary); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 801 | __ ldr(ip, FieldMemOperand(r4, PixelArray::kLengthOffset)); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 802 | __ mov(r2, Operand(key, ASR, kSmiTagSize)); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 803 | __ cmp(r2, ip); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 804 | __ b(hs, &slow); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 805 | __ ldr(ip, FieldMemOperand(r4, PixelArray::kExternalPointerOffset)); |
| 806 | __ ldrb(r2, MemOperand(ip, r2)); |
| 807 | __ mov(r0, Operand(r2, LSL, kSmiTagSize)); // Tag result as smi. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 808 | __ Ret(); |
| 809 | |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 810 | __ bind(&check_number_dictionary); |
| 811 | // Check whether the elements is a number dictionary. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 812 | // r0: key |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 813 | // r3: elements map |
| 814 | // r4: elements |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 815 | __ LoadRoot(ip, Heap::kHashTableMapRootIndex); |
| 816 | __ cmp(r3, ip); |
| 817 | __ b(ne, &slow); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 818 | __ mov(r2, Operand(r0, ASR, kSmiTagSize)); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 819 | GenerateNumberDictionaryLoad(masm, &slow, r4, r0, r2, r3, r5); |
ager@chromium.org | b26c50a | 2010-03-26 09:27:16 +0000 | [diff] [blame] | 820 | __ Ret(); |
| 821 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 822 | // Slow case, key and receiver still in r0 and r1. |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 823 | __ bind(&slow); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 824 | __ IncrementCounter(&Counters::keyed_load_generic_slow, 1, r2, r3); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 825 | GenerateRuntimeGetProperty(masm); |
sgjesse@chromium.org | 82dbbab | 2010-06-02 08:57:44 +0000 | [diff] [blame^] | 826 | |
| 827 | __ bind(&check_string); |
| 828 | // The key is not a smi. |
| 829 | // Is it a string? |
| 830 | // r0: key |
| 831 | // r1: receiver |
| 832 | __ CompareObjectType(r0, r2, r3, FIRST_NONSTRING_TYPE); |
| 833 | __ b(ge, &slow); |
| 834 | |
| 835 | // Is the string an array index, with cached numeric value? |
| 836 | __ ldr(r3, FieldMemOperand(r0, String::kHashFieldOffset)); |
| 837 | __ tst(r3, Operand(String::kIsArrayIndexMask)); |
| 838 | __ b(ne, &index_string); |
| 839 | |
| 840 | // Is the string a symbol? |
| 841 | // r2: key map |
| 842 | __ ldrb(r3, FieldMemOperand(r2, Map::kInstanceTypeOffset)); |
| 843 | ASSERT(kSymbolTag != 0); |
| 844 | __ tst(r3, Operand(kIsSymbolMask)); |
| 845 | __ b(eq, &slow); |
| 846 | |
| 847 | // If the receiver is a fast-case object, check the keyed lookup |
| 848 | // cache. Otherwise probe the dictionary. |
| 849 | __ ldr(r3, FieldMemOperand(r1, JSObject::kPropertiesOffset)); |
| 850 | __ ldr(r3, FieldMemOperand(r3, HeapObject::kMapOffset)); |
| 851 | __ LoadRoot(ip, Heap::kHashTableMapRootIndex); |
| 852 | __ cmp(r3, ip); |
| 853 | __ b(eq, &probe_dictionary); |
| 854 | |
| 855 | // Load the map of the receiver, compute the keyed lookup cache hash |
| 856 | // based on 32 bits of the map pointer and the string hash. |
| 857 | __ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 858 | __ mov(r3, Operand(r2, ASR, KeyedLookupCache::kMapHashShift)); |
| 859 | __ ldr(r4, FieldMemOperand(r0, String::kHashFieldOffset)); |
| 860 | __ eor(r3, r3, Operand(r4, ASR, String::kHashShift)); |
| 861 | __ and_(r3, r3, Operand(KeyedLookupCache::kCapacityMask)); |
| 862 | |
| 863 | // Load the key (consisting of map and symbol) from the cache and |
| 864 | // check for match. |
| 865 | ExternalReference cache_keys = ExternalReference::keyed_lookup_cache_keys(); |
| 866 | __ mov(r4, Operand(cache_keys)); |
| 867 | __ add(r4, r4, Operand(r3, LSL, kPointerSizeLog2 + 1)); |
| 868 | __ ldr(r5, MemOperand(r4, kPointerSize, PostIndex)); // Move r4 to symbol. |
| 869 | __ cmp(r2, r5); |
| 870 | __ b(ne, &slow); |
| 871 | __ ldr(r5, MemOperand(r4)); |
| 872 | __ cmp(r0, r5); |
| 873 | __ b(ne, &slow); |
| 874 | |
| 875 | // Get field offset and check that it is an in-object property. |
| 876 | // r0 : key |
| 877 | // r1 : receiver |
| 878 | // r2 : receiver's map |
| 879 | // r3 : lookup cache index |
| 880 | ExternalReference cache_field_offsets |
| 881 | = ExternalReference::keyed_lookup_cache_field_offsets(); |
| 882 | __ mov(r4, Operand(cache_field_offsets)); |
| 883 | __ ldr(r5, MemOperand(r4, r3, LSL, kPointerSizeLog2)); |
| 884 | __ ldrb(r6, FieldMemOperand(r2, Map::kInObjectPropertiesOffset)); |
| 885 | __ cmp(r5, r6); |
| 886 | __ b(ge, &slow); |
| 887 | |
| 888 | // Load in-object property. |
| 889 | __ sub(r5, r5, r6); // Index from end of object. |
| 890 | __ ldrb(r6, FieldMemOperand(r2, Map::kInstanceSizeOffset)); |
| 891 | __ add(r6, r6, r5); // Index from start of object. |
| 892 | __ sub(r1, r1, Operand(kHeapObjectTag)); // Remove the heap tag. |
| 893 | __ ldr(r0, MemOperand(r1, r6, LSL, kPointerSizeLog2)); |
| 894 | __ IncrementCounter(&Counters::keyed_load_generic_lookup_cache, 1, r2, r3); |
| 895 | __ Ret(); |
| 896 | |
| 897 | // Do a quick inline probe of the receiver's dictionary, if it |
| 898 | // exists. |
| 899 | __ bind(&probe_dictionary); |
| 900 | // Load the property to r0. |
| 901 | GenerateDictionaryLoad( |
| 902 | masm, &slow, r1, r0, r0, r2, r3, r4, DICTIONARY_CHECK_DONE); |
| 903 | __ IncrementCounter(&Counters::keyed_load_generic_symbol, 1, r2, r3); |
| 904 | __ Ret(); |
| 905 | |
| 906 | __ b(&slow); |
| 907 | // If the hash field contains an array index pick it out. The assert checks |
| 908 | // that the constants for the maximum number of digits for an array index |
| 909 | // cached in the hash field and the number of bits reserved for it does not |
| 910 | // conflict. |
| 911 | ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) < |
| 912 | (1 << String::kArrayIndexValueBits)); |
| 913 | __ bind(&index_string); |
| 914 | // r0: key (string) |
| 915 | // r1: receiver |
| 916 | // r3: hash field |
| 917 | // We want the smi-tagged index in r0. kArrayIndexValueMask has zeros in |
| 918 | // the low kHashShift bits. |
| 919 | ASSERT(String::kHashShift >= kSmiTagSize); |
| 920 | __ and_(r3, r3, Operand(String::kArrayIndexValueMask)); |
| 921 | // Here we actually clobber the key (r0) which will be used if calling into |
| 922 | // runtime later. However as the new key is the numeric value of a string key |
| 923 | // there is no difference in using either key. |
| 924 | __ mov(r0, Operand(r3, ASR, String::kHashShift - kSmiTagSize)); |
| 925 | // Now jump to the place where smi keys are handled. |
| 926 | __ jmp(&index_smi); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 927 | } |
| 928 | |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 929 | |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 930 | void KeyedLoadIC::GenerateString(MacroAssembler* masm) { |
| 931 | // ---------- S t a t e -------------- |
| 932 | // -- lr : return address |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 933 | // -- r0 : key (index) |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 934 | // -- r1 : receiver |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 935 | // ----------------------------------- |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 936 | Label miss; |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 937 | Label index_out_of_range; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 938 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 939 | Register receiver = r1; |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 940 | Register index = r0; |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 941 | Register scratch1 = r2; |
| 942 | Register scratch2 = r3; |
| 943 | Register result = r0; |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 944 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 945 | StringCharAtGenerator char_at_generator(receiver, |
| 946 | index, |
| 947 | scratch1, |
| 948 | scratch2, |
| 949 | result, |
| 950 | &miss, // When not a string. |
| 951 | &miss, // When not a number. |
| 952 | &index_out_of_range, |
| 953 | STRING_INDEX_IS_ARRAY_INDEX); |
| 954 | char_at_generator.GenerateFast(masm); |
| 955 | __ Ret(); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 956 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 957 | ICRuntimeCallHelper call_helper; |
| 958 | char_at_generator.GenerateSlow(masm, call_helper); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 959 | |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 960 | __ bind(&index_out_of_range); |
| 961 | __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); |
| 962 | __ Ret(); |
ager@chromium.org | 357bf65 | 2010-04-12 11:30:10 +0000 | [diff] [blame] | 963 | |
| 964 | __ bind(&miss); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 965 | GenerateMiss(masm); |
fschneider@chromium.org | 0c20e67 | 2010-01-14 15:28:53 +0000 | [diff] [blame] | 966 | } |
| 967 | |
| 968 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 969 | // Convert unsigned integer with specified number of leading zeroes in binary |
| 970 | // representation to IEEE 754 double. |
| 971 | // Integer to convert is passed in register hiword. |
| 972 | // Resulting double is returned in registers hiword:loword. |
| 973 | // This functions does not work correctly for 0. |
| 974 | static void GenerateUInt2Double(MacroAssembler* masm, |
| 975 | Register hiword, |
| 976 | Register loword, |
| 977 | Register scratch, |
| 978 | int leading_zeroes) { |
| 979 | const int meaningful_bits = kBitsPerInt - leading_zeroes - 1; |
| 980 | const int biased_exponent = HeapNumber::kExponentBias + meaningful_bits; |
| 981 | |
| 982 | const int mantissa_shift_for_hi_word = |
| 983 | meaningful_bits - HeapNumber::kMantissaBitsInTopWord; |
| 984 | |
| 985 | const int mantissa_shift_for_lo_word = |
| 986 | kBitsPerInt - mantissa_shift_for_hi_word; |
| 987 | |
| 988 | __ mov(scratch, Operand(biased_exponent << HeapNumber::kExponentShift)); |
| 989 | if (mantissa_shift_for_hi_word > 0) { |
| 990 | __ mov(loword, Operand(hiword, LSL, mantissa_shift_for_lo_word)); |
| 991 | __ orr(hiword, scratch, Operand(hiword, LSR, mantissa_shift_for_hi_word)); |
| 992 | } else { |
| 993 | __ mov(loword, Operand(0)); |
| 994 | __ orr(hiword, scratch, Operand(hiword, LSL, mantissa_shift_for_hi_word)); |
| 995 | } |
| 996 | |
| 997 | // If least significant bit of biased exponent was not 1 it was corrupted |
| 998 | // by most significant bit of mantissa so we should fix that. |
| 999 | if (!(biased_exponent & 1)) { |
| 1000 | __ bic(hiword, hiword, Operand(1 << HeapNumber::kExponentShift)); |
| 1001 | } |
| 1002 | } |
| 1003 | |
| 1004 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1005 | void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm, |
| 1006 | ExternalArrayType array_type) { |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1007 | // ---------- S t a t e -------------- |
| 1008 | // -- lr : return address |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1009 | // -- r0 : key |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1010 | // -- r1 : receiver |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1011 | // ----------------------------------- |
| 1012 | Label slow, failed_allocation; |
| 1013 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1014 | Register key = r0; |
| 1015 | Register receiver = r1; |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1016 | |
| 1017 | // Check that the object isn't a smi |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1018 | __ BranchOnSmi(receiver, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1019 | |
| 1020 | // Check that the key is a smi. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1021 | __ BranchOnNotSmi(key, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1022 | |
| 1023 | // Check that the object is a JS object. Load map into r2. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1024 | __ CompareObjectType(receiver, r2, r3, FIRST_JS_OBJECT_TYPE); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1025 | __ b(lt, &slow); |
| 1026 | |
| 1027 | // Check that the receiver does not require access checks. We need |
| 1028 | // to check this explicitly since this generic stub does not perform |
| 1029 | // map checks. |
| 1030 | __ ldrb(r3, FieldMemOperand(r2, Map::kBitFieldOffset)); |
| 1031 | __ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded)); |
| 1032 | __ b(ne, &slow); |
| 1033 | |
| 1034 | // Check that the elements array is the appropriate type of |
| 1035 | // ExternalArray. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1036 | __ ldr(r3, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 1037 | __ ldr(r2, FieldMemOperand(r3, HeapObject::kMapOffset)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1038 | __ LoadRoot(ip, Heap::RootIndexForExternalArrayType(array_type)); |
| 1039 | __ cmp(r2, ip); |
| 1040 | __ b(ne, &slow); |
| 1041 | |
| 1042 | // Check that the index is in range. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1043 | __ ldr(ip, FieldMemOperand(r3, ExternalArray::kLengthOffset)); |
| 1044 | __ cmp(ip, Operand(key, ASR, kSmiTagSize)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1045 | // Unsigned comparison catches both negative and too-large values. |
| 1046 | __ b(lo, &slow); |
| 1047 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1048 | // r3: elements array |
| 1049 | __ ldr(r3, FieldMemOperand(r3, ExternalArray::kExternalPointerOffset)); |
| 1050 | // r3: base pointer of external storage |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1051 | |
| 1052 | // We are not untagging smi key and instead work with it |
| 1053 | // as if it was premultiplied by 2. |
| 1054 | ASSERT((kSmiTag == 0) && (kSmiTagSize == 1)); |
| 1055 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1056 | Register value = r2; |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1057 | switch (array_type) { |
| 1058 | case kExternalByteArray: |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1059 | __ ldrsb(value, MemOperand(r3, key, LSR, 1)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1060 | break; |
| 1061 | case kExternalUnsignedByteArray: |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1062 | __ ldrb(value, MemOperand(r3, key, LSR, 1)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1063 | break; |
| 1064 | case kExternalShortArray: |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1065 | __ ldrsh(value, MemOperand(r3, key, LSL, 0)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1066 | break; |
| 1067 | case kExternalUnsignedShortArray: |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1068 | __ ldrh(value, MemOperand(r3, key, LSL, 0)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1069 | break; |
| 1070 | case kExternalIntArray: |
| 1071 | case kExternalUnsignedIntArray: |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1072 | __ ldr(value, MemOperand(r3, key, LSL, 1)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1073 | break; |
| 1074 | case kExternalFloatArray: |
| 1075 | if (CpuFeatures::IsSupported(VFP3)) { |
| 1076 | CpuFeatures::Scope scope(VFP3); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1077 | __ add(r2, r3, Operand(key, LSL, 1)); |
| 1078 | __ vldr(s0, r2, 0); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1079 | } else { |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1080 | __ ldr(value, MemOperand(r3, key, LSL, 1)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1081 | } |
| 1082 | break; |
| 1083 | default: |
| 1084 | UNREACHABLE(); |
| 1085 | break; |
| 1086 | } |
| 1087 | |
| 1088 | // For integer array types: |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1089 | // r2: value |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1090 | // For floating-point array type |
| 1091 | // s0: value (if VFP3 is supported) |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1092 | // r2: value (if VFP3 is not supported) |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1093 | |
| 1094 | if (array_type == kExternalIntArray) { |
| 1095 | // For the Int and UnsignedInt array types, we need to see whether |
| 1096 | // the value can be represented in a Smi. If not, we need to convert |
| 1097 | // it to a HeapNumber. |
| 1098 | Label box_int; |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1099 | __ cmp(value, Operand(0xC0000000)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1100 | __ b(mi, &box_int); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1101 | // Tag integer as smi and return it. |
| 1102 | __ mov(r0, Operand(value, LSL, kSmiTagSize)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1103 | __ Ret(); |
| 1104 | |
| 1105 | __ bind(&box_int); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1106 | // Allocate a HeapNumber for the result and perform int-to-double |
| 1107 | // conversion. Use r0 for result as key is not needed any more. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1108 | __ AllocateHeapNumber(r0, r3, r4, &slow); |
| 1109 | |
| 1110 | if (CpuFeatures::IsSupported(VFP3)) { |
| 1111 | CpuFeatures::Scope scope(VFP3); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1112 | __ vmov(s0, value); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1113 | __ vcvt_f64_s32(d0, s0); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1114 | __ sub(r3, r0, Operand(kHeapObjectTag)); |
| 1115 | __ vstr(d0, r3, HeapNumber::kValueOffset); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1116 | __ Ret(); |
| 1117 | } else { |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1118 | WriteInt32ToHeapNumberStub stub(value, r0, r3); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1119 | __ TailCallStub(&stub); |
| 1120 | } |
| 1121 | } else if (array_type == kExternalUnsignedIntArray) { |
| 1122 | // The test is different for unsigned int values. Since we need |
| 1123 | // the value to be in the range of a positive smi, we can't |
| 1124 | // handle either of the top two bits being set in the value. |
| 1125 | if (CpuFeatures::IsSupported(VFP3)) { |
| 1126 | CpuFeatures::Scope scope(VFP3); |
| 1127 | Label box_int, done; |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1128 | __ tst(value, Operand(0xC0000000)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1129 | __ b(ne, &box_int); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1130 | // Tag integer as smi and return it. |
| 1131 | __ mov(r0, Operand(value, LSL, kSmiTagSize)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1132 | __ Ret(); |
| 1133 | |
| 1134 | __ bind(&box_int); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1135 | __ vmov(s0, value); |
| 1136 | // Allocate a HeapNumber for the result and perform int-to-double |
| 1137 | // conversion. Don't use r0 and r1 as AllocateHeapNumber clobbers all |
| 1138 | // registers - also when jumping due to exhausted young space. |
| 1139 | __ AllocateHeapNumber(r2, r3, r4, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1140 | |
| 1141 | __ vcvt_f64_u32(d0, s0); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1142 | __ sub(r1, r2, Operand(kHeapObjectTag)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1143 | __ vstr(d0, r1, HeapNumber::kValueOffset); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1144 | |
| 1145 | __ mov(r0, r2); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1146 | __ Ret(); |
| 1147 | } else { |
| 1148 | // Check whether unsigned integer fits into smi. |
| 1149 | Label box_int_0, box_int_1, done; |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1150 | __ tst(value, Operand(0x80000000)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1151 | __ b(ne, &box_int_0); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1152 | __ tst(value, Operand(0x40000000)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1153 | __ b(ne, &box_int_1); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1154 | // Tag integer as smi and return it. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1155 | __ mov(r0, Operand(value, LSL, kSmiTagSize)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1156 | __ Ret(); |
| 1157 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1158 | Register hiword = value; // r2. |
| 1159 | Register loword = r3; |
| 1160 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1161 | __ bind(&box_int_0); |
| 1162 | // Integer does not have leading zeros. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1163 | GenerateUInt2Double(masm, hiword, loword, r4, 0); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1164 | __ b(&done); |
| 1165 | |
| 1166 | __ bind(&box_int_1); |
| 1167 | // Integer has one leading zero. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1168 | GenerateUInt2Double(masm, hiword, loword, r4, 1); |
| 1169 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1170 | |
| 1171 | __ bind(&done); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1172 | // Integer was converted to double in registers hiword:loword. |
| 1173 | // Wrap it into a HeapNumber. Don't use r0 and r1 as AllocateHeapNumber |
| 1174 | // clobbers all registers - also when jumping due to exhausted young |
| 1175 | // space. |
| 1176 | __ AllocateHeapNumber(r4, r5, r6, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1177 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1178 | __ str(hiword, FieldMemOperand(r4, HeapNumber::kExponentOffset)); |
| 1179 | __ str(loword, FieldMemOperand(r4, HeapNumber::kMantissaOffset)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1180 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1181 | __ mov(r0, r4); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1182 | __ Ret(); |
| 1183 | } |
| 1184 | } else if (array_type == kExternalFloatArray) { |
| 1185 | // For the floating-point array type, we need to always allocate a |
| 1186 | // HeapNumber. |
| 1187 | if (CpuFeatures::IsSupported(VFP3)) { |
| 1188 | CpuFeatures::Scope scope(VFP3); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1189 | // Allocate a HeapNumber for the result. Don't use r0 and r1 as |
| 1190 | // AllocateHeapNumber clobbers all registers - also when jumping due to |
| 1191 | // exhausted young space. |
| 1192 | __ AllocateHeapNumber(r2, r3, r4, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1193 | __ vcvt_f64_f32(d0, s0); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1194 | __ sub(r1, r2, Operand(kHeapObjectTag)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1195 | __ vstr(d0, r1, HeapNumber::kValueOffset); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1196 | |
| 1197 | __ mov(r0, r2); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1198 | __ Ret(); |
| 1199 | } else { |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1200 | // Allocate a HeapNumber for the result. Don't use r0 and r1 as |
| 1201 | // AllocateHeapNumber clobbers all registers - also when jumping due to |
| 1202 | // exhausted young space. |
| 1203 | __ AllocateHeapNumber(r3, r4, r5, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1204 | // VFP is not available, do manual single to double conversion. |
| 1205 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1206 | // r2: floating point value (binary32) |
| 1207 | // r3: heap number for result |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1208 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1209 | // Extract mantissa to r0. OK to clobber r0 now as there are no jumps to |
| 1210 | // the slow case from here. |
| 1211 | __ and_(r0, value, Operand(kBinary32MantissaMask)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1212 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1213 | // Extract exponent to r1. OK to clobber r1 now as there are no jumps to |
| 1214 | // the slow case from here. |
| 1215 | __ mov(r1, Operand(value, LSR, kBinary32MantissaBits)); |
| 1216 | __ and_(r1, r1, Operand(kBinary32ExponentMask >> kBinary32MantissaBits)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1217 | |
| 1218 | Label exponent_rebiased; |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1219 | __ teq(r1, Operand(0x00)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1220 | __ b(eq, &exponent_rebiased); |
| 1221 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1222 | __ teq(r1, Operand(0xff)); |
| 1223 | __ mov(r1, Operand(0x7ff), LeaveCC, eq); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1224 | __ b(eq, &exponent_rebiased); |
| 1225 | |
| 1226 | // Rebias exponent. |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1227 | __ add(r1, |
| 1228 | r1, |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1229 | Operand(-kBinary32ExponentBias + HeapNumber::kExponentBias)); |
| 1230 | |
| 1231 | __ bind(&exponent_rebiased); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1232 | __ and_(r2, value, Operand(kBinary32SignMask)); |
| 1233 | value = no_reg; |
| 1234 | __ orr(r2, r2, Operand(r1, LSL, HeapNumber::kMantissaBitsInTopWord)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1235 | |
| 1236 | // Shift mantissa. |
| 1237 | static const int kMantissaShiftForHiWord = |
| 1238 | kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord; |
| 1239 | |
| 1240 | static const int kMantissaShiftForLoWord = |
| 1241 | kBitsPerInt - kMantissaShiftForHiWord; |
| 1242 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1243 | __ orr(r2, r2, Operand(r0, LSR, kMantissaShiftForHiWord)); |
| 1244 | __ mov(r0, Operand(r0, LSL, kMantissaShiftForLoWord)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1245 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1246 | __ str(r2, FieldMemOperand(r3, HeapNumber::kExponentOffset)); |
| 1247 | __ str(r0, FieldMemOperand(r3, HeapNumber::kMantissaOffset)); |
| 1248 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1249 | __ mov(r0, r3); |
| 1250 | __ Ret(); |
| 1251 | } |
| 1252 | |
| 1253 | } else { |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1254 | // Tag integer as smi and return it. |
| 1255 | __ mov(r0, Operand(value, LSL, kSmiTagSize)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1256 | __ Ret(); |
| 1257 | } |
| 1258 | |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1259 | // Slow case, key and receiver still in r0 and r1. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1260 | __ bind(&slow); |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1261 | __ IncrementCounter(&Counters::keyed_load_external_array_slow, 1, r2, r3); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1262 | GenerateRuntimeGetProperty(masm); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1266 | void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) { |
| 1267 | // ---------- S t a t e -------------- |
| 1268 | // -- lr : return address |
ager@chromium.org | ac091b7 | 2010-05-05 07:34:42 +0000 | [diff] [blame] | 1269 | // -- r0 : key |
sgjesse@chromium.org | 720dc0b | 2010-05-10 09:25:39 +0000 | [diff] [blame] | 1270 | // -- r1 : receiver |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1271 | // ----------------------------------- |
| 1272 | Label slow; |
| 1273 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1274 | // Check that the receiver isn't a smi. |
| 1275 | __ BranchOnSmi(r1, &slow); |
| 1276 | |
| 1277 | // Check that the key is a smi. |
| 1278 | __ BranchOnNotSmi(r0, &slow); |
| 1279 | |
| 1280 | // Get the map of the receiver. |
| 1281 | __ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 1282 | |
| 1283 | // Check that it has indexed interceptor and access checks |
| 1284 | // are not enabled for this object. |
| 1285 | __ ldrb(r3, FieldMemOperand(r2, Map::kBitFieldOffset)); |
| 1286 | __ and_(r3, r3, Operand(kSlowCaseBitFieldMask)); |
| 1287 | __ cmp(r3, Operand(1 << Map::kHasIndexedInterceptor)); |
| 1288 | __ b(ne, &slow); |
| 1289 | |
| 1290 | // Everything is fine, call runtime. |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 1291 | __ Push(r1, r0); // Receiver, key. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1292 | |
| 1293 | // Perform tail call to the entry. |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1294 | __ TailCallExternalReference(ExternalReference( |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1295 | IC_Utility(kKeyedLoadPropertyWithInterceptor)), 2, 1); |
| 1296 | |
| 1297 | __ bind(&slow); |
| 1298 | GenerateMiss(masm); |
| 1299 | } |
| 1300 | |
| 1301 | |
| 1302 | void KeyedStoreIC::GenerateMiss(MacroAssembler* masm) { |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1303 | // ---------- S t a t e -------------- |
| 1304 | // -- r0 : value |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1305 | // -- r1 : key |
| 1306 | // -- r2 : receiver |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1307 | // -- lr : return address |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1308 | // ----------------------------------- |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1309 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1310 | // Push receiver, key and value for runtime call. |
| 1311 | __ Push(r2, r1, r0); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1312 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1313 | ExternalReference ref = ExternalReference(IC_Utility(kKeyedStoreIC_Miss)); |
| 1314 | __ TailCallExternalReference(ref, 3, 1); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1315 | } |
| 1316 | |
| 1317 | |
| 1318 | void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm) { |
| 1319 | // ---------- S t a t e -------------- |
| 1320 | // -- r0 : value |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1321 | // -- r1 : key |
| 1322 | // -- r2 : receiver |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1323 | // -- lr : return address |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1324 | // ----------------------------------- |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1325 | |
| 1326 | // Push receiver, key and value for runtime call. |
| 1327 | __ Push(r2, r1, r0); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1328 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1329 | __ TailCallRuntime(Runtime::kSetProperty, 3, 1); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1330 | } |
| 1331 | |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1332 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1333 | void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm) { |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1334 | // ---------- S t a t e -------------- |
| 1335 | // -- r0 : value |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1336 | // -- r1 : key |
| 1337 | // -- r2 : receiver |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1338 | // -- lr : return address |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1339 | // ----------------------------------- |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1340 | Label slow, fast, array, extra, check_pixel_array; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1341 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1342 | // Register usage. |
| 1343 | Register value = r0; |
| 1344 | Register key = r1; |
| 1345 | Register receiver = r2; |
| 1346 | Register elements = r3; // Elements array of the receiver. |
| 1347 | // r4 and r5 are used as general scratch registers. |
| 1348 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1349 | // Check that the key is a smi. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1350 | __ tst(key, Operand(kSmiTagMask)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1351 | __ b(ne, &slow); |
| 1352 | // Check that the object isn't a smi. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1353 | __ tst(receiver, Operand(kSmiTagMask)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1354 | __ b(eq, &slow); |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 1355 | // Get the map of the object. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1356 | __ ldr(r4, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 1357 | // Check that the receiver does not require access checks. We need |
| 1358 | // to do this because this generic stub does not perform map checks. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1359 | __ ldrb(ip, FieldMemOperand(r4, Map::kBitFieldOffset)); |
ager@chromium.org | 8bb6058 | 2008-12-11 12:02:20 +0000 | [diff] [blame] | 1360 | __ tst(ip, Operand(1 << Map::kIsAccessCheckNeeded)); |
| 1361 | __ b(ne, &slow); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1362 | // Check if the object is a JS array or not. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1363 | __ ldrb(r4, FieldMemOperand(r4, Map::kInstanceTypeOffset)); |
| 1364 | __ cmp(r4, Operand(JS_ARRAY_TYPE)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1365 | __ b(eq, &array); |
| 1366 | // Check that the object is some kind of JS object. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1367 | __ cmp(r4, Operand(FIRST_JS_OBJECT_TYPE)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1368 | __ b(lt, &slow); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1369 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1370 | // Object case: Check key against length in the elements array. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1371 | __ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1372 | // Check that the object is in fast mode (not dictionary). |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1373 | __ ldr(r4, FieldMemOperand(elements, HeapObject::kMapOffset)); |
ager@chromium.org | ab99eea | 2009-08-25 07:05:41 +0000 | [diff] [blame] | 1374 | __ LoadRoot(ip, Heap::kFixedArrayMapRootIndex); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1375 | __ cmp(r4, ip); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1376 | __ b(ne, &check_pixel_array); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1377 | // Check array bounds. Both the key and the length of FixedArray are smis. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1378 | __ ldr(ip, FieldMemOperand(elements, FixedArray::kLengthOffset)); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1379 | __ cmp(key, Operand(ip)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1380 | __ b(lo, &fast); |
| 1381 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1382 | // Slow case, handle jump to runtime. |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1383 | __ bind(&slow); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1384 | // Entry registers are intact. |
| 1385 | // r0: value. |
| 1386 | // r1: key. |
| 1387 | // r2: receiver. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1388 | GenerateRuntimeSetProperty(masm); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1389 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1390 | // Check whether the elements is a pixel array. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1391 | // r4: elements map. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1392 | __ bind(&check_pixel_array); |
| 1393 | __ LoadRoot(ip, Heap::kPixelArrayMapRootIndex); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1394 | __ cmp(r4, ip); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1395 | __ b(ne, &slow); |
| 1396 | // Check that the value is a smi. If a conversion is needed call into the |
| 1397 | // runtime to convert and clamp. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1398 | __ BranchOnNotSmi(value, &slow); |
| 1399 | __ mov(r4, Operand(key, ASR, kSmiTagSize)); // Untag the key. |
| 1400 | __ ldr(ip, FieldMemOperand(elements, PixelArray::kLengthOffset)); |
| 1401 | __ cmp(r4, Operand(ip)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1402 | __ b(hs, &slow); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1403 | __ mov(r5, Operand(value, ASR, kSmiTagSize)); // Untag the value. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1404 | { // Clamp the value to [0..255]. |
| 1405 | Label done; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1406 | __ tst(r5, Operand(0xFFFFFF00)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1407 | __ b(eq, &done); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1408 | __ mov(r5, Operand(0), LeaveCC, mi); // 0 if negative. |
| 1409 | __ mov(r5, Operand(255), LeaveCC, pl); // 255 if positive. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1410 | __ bind(&done); |
| 1411 | } |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1412 | // Get the pointer to the external array. This clobbers elements. |
| 1413 | __ ldr(elements, |
| 1414 | FieldMemOperand(elements, PixelArray::kExternalPointerOffset)); |
| 1415 | __ strb(r5, MemOperand(elements, r4)); // Elements is now external array. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1416 | __ Ret(); |
| 1417 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1418 | // Extra capacity case: Check if there is extra capacity to |
| 1419 | // perform the store and update the length. Used for adding one |
| 1420 | // element to the array by writing to array[array.length]. |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1421 | __ bind(&extra); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1422 | // Condition code from comparing key and array length is still available. |
| 1423 | __ b(ne, &slow); // Only support writing to writing to array[array.length]. |
| 1424 | // Check for room in the elements backing store. |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1425 | // Both the key and the length of FixedArray are smis. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1426 | __ ldr(ip, FieldMemOperand(elements, FixedArray::kLengthOffset)); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 1427 | __ cmp(key, Operand(ip)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1428 | __ b(hs, &slow); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1429 | // Calculate key + 1 as smi. |
| 1430 | ASSERT_EQ(0, kSmiTag); |
| 1431 | __ add(r4, key, Operand(Smi::FromInt(1))); |
| 1432 | __ str(r4, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1433 | __ b(&fast); |
| 1434 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1435 | // Array case: Get the length and the elements array from the JS |
| 1436 | // array. Check that the array is in fast mode; if it is the |
| 1437 | // length is always a smi. |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1438 | __ bind(&array); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1439 | __ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 1440 | __ ldr(r4, FieldMemOperand(elements, HeapObject::kMapOffset)); |
ager@chromium.org | ab99eea | 2009-08-25 07:05:41 +0000 | [diff] [blame] | 1441 | __ LoadRoot(ip, Heap::kFixedArrayMapRootIndex); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1442 | __ cmp(r4, ip); |
sgjesse@chromium.org | 0b6db59 | 2009-07-30 14:48:31 +0000 | [diff] [blame] | 1443 | __ b(ne, &slow); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1444 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1445 | // Check the key against the length in the array. |
| 1446 | __ ldr(ip, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 1447 | __ cmp(key, Operand(ip)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1448 | __ b(hs, &extra); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1449 | // Fall through to fast case. |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1450 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1451 | __ bind(&fast); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1452 | // Fast case, store the value to the elements backing store. |
| 1453 | __ add(r5, elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1454 | __ add(r5, r5, Operand(key, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 1455 | __ str(value, MemOperand(r5)); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1456 | // Skip write barrier if the written value is a smi. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1457 | __ tst(value, Operand(kSmiTagMask)); |
| 1458 | __ Ret(eq); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1459 | // Update write barrier for the elements array address. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1460 | __ sub(r4, r5, Operand(elements)); |
| 1461 | __ RecordWrite(elements, r4, r5); |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1462 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame] | 1463 | __ Ret(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1464 | } |
| 1465 | |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1466 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1467 | // Convert int passed in register ival to IEE 754 single precision |
| 1468 | // floating point value and store it into register fval. |
| 1469 | // If VFP3 is available use it for conversion. |
| 1470 | static void ConvertIntToFloat(MacroAssembler* masm, |
| 1471 | Register ival, |
| 1472 | Register fval, |
| 1473 | Register scratch1, |
| 1474 | Register scratch2) { |
| 1475 | if (CpuFeatures::IsSupported(VFP3)) { |
| 1476 | CpuFeatures::Scope scope(VFP3); |
| 1477 | __ vmov(s0, ival); |
| 1478 | __ vcvt_f32_s32(s0, s0); |
| 1479 | __ vmov(fval, s0); |
| 1480 | } else { |
| 1481 | Label not_special, done; |
| 1482 | // Move sign bit from source to destination. This works because the sign |
| 1483 | // bit in the exponent word of the double has the same position and polarity |
| 1484 | // as the 2's complement sign bit in a Smi. |
| 1485 | ASSERT(kBinary32SignMask == 0x80000000u); |
| 1486 | |
| 1487 | __ and_(fval, ival, Operand(kBinary32SignMask), SetCC); |
| 1488 | // Negate value if it is negative. |
| 1489 | __ rsb(ival, ival, Operand(0), LeaveCC, ne); |
| 1490 | |
| 1491 | // We have -1, 0 or 1, which we treat specially. Register ival contains |
| 1492 | // absolute value: it is either equal to 1 (special case of -1 and 1), |
| 1493 | // greater than 1 (not a special case) or less than 1 (special case of 0). |
| 1494 | __ cmp(ival, Operand(1)); |
| 1495 | __ b(gt, ¬_special); |
| 1496 | |
| 1497 | // For 1 or -1 we need to or in the 0 exponent (biased). |
| 1498 | static const uint32_t exponent_word_for_1 = |
| 1499 | kBinary32ExponentBias << kBinary32ExponentShift; |
| 1500 | |
| 1501 | __ orr(fval, fval, Operand(exponent_word_for_1), LeaveCC, eq); |
| 1502 | __ b(&done); |
| 1503 | |
| 1504 | __ bind(¬_special); |
| 1505 | // Count leading zeros. |
| 1506 | // Gets the wrong answer for 0, but we already checked for that case above. |
| 1507 | Register zeros = scratch2; |
| 1508 | __ CountLeadingZeros(ival, scratch1, zeros); |
| 1509 | |
| 1510 | // Compute exponent and or it into the exponent register. |
| 1511 | __ rsb(scratch1, |
| 1512 | zeros, |
| 1513 | Operand((kBitsPerInt - 1) + kBinary32ExponentBias)); |
| 1514 | |
| 1515 | __ orr(fval, |
| 1516 | fval, |
| 1517 | Operand(scratch1, LSL, kBinary32ExponentShift)); |
| 1518 | |
| 1519 | // Shift up the source chopping the top bit off. |
| 1520 | __ add(zeros, zeros, Operand(1)); |
| 1521 | // This wouldn't work for 1 and -1 as the shift would be 32 which means 0. |
| 1522 | __ mov(ival, Operand(ival, LSL, zeros)); |
| 1523 | // And the top (top 20 bits). |
| 1524 | __ orr(fval, |
| 1525 | fval, |
| 1526 | Operand(ival, LSR, kBitsPerInt - kBinary32MantissaBits)); |
| 1527 | |
| 1528 | __ bind(&done); |
| 1529 | } |
| 1530 | } |
| 1531 | |
| 1532 | |
| 1533 | static bool IsElementTypeSigned(ExternalArrayType array_type) { |
| 1534 | switch (array_type) { |
| 1535 | case kExternalByteArray: |
| 1536 | case kExternalShortArray: |
| 1537 | case kExternalIntArray: |
| 1538 | return true; |
| 1539 | |
| 1540 | case kExternalUnsignedByteArray: |
| 1541 | case kExternalUnsignedShortArray: |
| 1542 | case kExternalUnsignedIntArray: |
| 1543 | return false; |
| 1544 | |
| 1545 | default: |
| 1546 | UNREACHABLE(); |
| 1547 | return false; |
| 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1552 | void KeyedStoreIC::GenerateExternalArray(MacroAssembler* masm, |
| 1553 | ExternalArrayType array_type) { |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1554 | // ---------- S t a t e -------------- |
| 1555 | // -- r0 : value |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1556 | // -- r1 : key |
| 1557 | // -- r2 : receiver |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1558 | // -- lr : return address |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1559 | // ----------------------------------- |
| 1560 | Label slow, check_heap_number; |
| 1561 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1562 | // Register usage. |
| 1563 | Register value = r0; |
| 1564 | Register key = r1; |
| 1565 | Register receiver = r2; |
| 1566 | // r3 mostly holds the elements array or the destination external array. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1567 | |
| 1568 | // Check that the object isn't a smi. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1569 | __ BranchOnSmi(receiver, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1570 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1571 | // Check that the object is a JS object. Load map into r3. |
| 1572 | __ CompareObjectType(receiver, r3, r4, FIRST_JS_OBJECT_TYPE); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1573 | __ b(le, &slow); |
| 1574 | |
| 1575 | // Check that the receiver does not require access checks. We need |
| 1576 | // to do this because this generic stub does not perform map checks. |
| 1577 | __ ldrb(ip, FieldMemOperand(r3, Map::kBitFieldOffset)); |
| 1578 | __ tst(ip, Operand(1 << Map::kIsAccessCheckNeeded)); |
| 1579 | __ b(ne, &slow); |
| 1580 | |
| 1581 | // Check that the key is a smi. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1582 | __ BranchOnNotSmi(key, &slow); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1583 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1584 | // Check that the elements array is the appropriate type of ExternalArray. |
| 1585 | __ ldr(r3, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 1586 | __ ldr(r4, FieldMemOperand(r3, HeapObject::kMapOffset)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1587 | __ LoadRoot(ip, Heap::RootIndexForExternalArrayType(array_type)); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1588 | __ cmp(r4, ip); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1589 | __ b(ne, &slow); |
| 1590 | |
| 1591 | // Check that the index is in range. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1592 | __ mov(r4, Operand(key, ASR, kSmiTagSize)); // Untag the index. |
| 1593 | __ ldr(ip, FieldMemOperand(r3, ExternalArray::kLengthOffset)); |
| 1594 | __ cmp(r4, ip); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1595 | // Unsigned comparison catches both negative and too-large values. |
| 1596 | __ b(hs, &slow); |
| 1597 | |
| 1598 | // Handle both smis and HeapNumbers in the fast path. Go to the |
| 1599 | // runtime for all other kinds of values. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1600 | // r3: external array. |
| 1601 | // r4: key (integer). |
| 1602 | __ BranchOnNotSmi(value, &check_heap_number); |
| 1603 | __ mov(r5, Operand(value, ASR, kSmiTagSize)); // Untag the value. |
| 1604 | __ ldr(r3, FieldMemOperand(r3, ExternalArray::kExternalPointerOffset)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1605 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1606 | // r3: base pointer of external storage. |
| 1607 | // r4: key (integer). |
| 1608 | // r5: value (integer). |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1609 | switch (array_type) { |
| 1610 | case kExternalByteArray: |
| 1611 | case kExternalUnsignedByteArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1612 | __ strb(r5, MemOperand(r3, r4, LSL, 0)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1613 | break; |
| 1614 | case kExternalShortArray: |
| 1615 | case kExternalUnsignedShortArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1616 | __ strh(r5, MemOperand(r3, r4, LSL, 1)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1617 | break; |
| 1618 | case kExternalIntArray: |
| 1619 | case kExternalUnsignedIntArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1620 | __ str(r5, MemOperand(r3, r4, LSL, 2)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1621 | break; |
| 1622 | case kExternalFloatArray: |
| 1623 | // Need to perform int-to-float conversion. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1624 | ConvertIntToFloat(masm, r5, r6, r7, r9); |
| 1625 | __ str(r6, MemOperand(r3, r4, LSL, 2)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1626 | break; |
| 1627 | default: |
| 1628 | UNREACHABLE(); |
| 1629 | break; |
| 1630 | } |
| 1631 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1632 | // Entry registers are intact, r0 holds the value which is the return value. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1633 | __ Ret(); |
| 1634 | |
| 1635 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1636 | // r3: external array. |
| 1637 | // r4: index (integer). |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1638 | __ bind(&check_heap_number); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1639 | __ CompareObjectType(value, r5, r6, HEAP_NUMBER_TYPE); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1640 | __ b(ne, &slow); |
| 1641 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1642 | __ ldr(r3, FieldMemOperand(r3, ExternalArray::kExternalPointerOffset)); |
| 1643 | |
| 1644 | // r3: base pointer of external storage. |
| 1645 | // r4: key (integer). |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1646 | |
| 1647 | // The WebGL specification leaves the behavior of storing NaN and |
| 1648 | // +/-Infinity into integer arrays basically undefined. For more |
| 1649 | // reproducible behavior, convert these to zero. |
| 1650 | if (CpuFeatures::IsSupported(VFP3)) { |
| 1651 | CpuFeatures::Scope scope(VFP3); |
| 1652 | |
| 1653 | // vldr requires offset to be a multiple of 4 so we can not |
| 1654 | // include -kHeapObjectTag into it. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1655 | __ sub(r5, r0, Operand(kHeapObjectTag)); |
| 1656 | __ vldr(d0, r5, HeapNumber::kValueOffset); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1657 | |
| 1658 | if (array_type == kExternalFloatArray) { |
| 1659 | __ vcvt_f32_f64(s0, d0); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1660 | __ vmov(r5, s0); |
| 1661 | __ str(r5, MemOperand(r3, r4, LSL, 2)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1662 | } else { |
| 1663 | Label done; |
| 1664 | |
| 1665 | // Need to perform float-to-int conversion. |
| 1666 | // Test for NaN. |
| 1667 | __ vcmp(d0, d0); |
| 1668 | // Move vector status bits to normal status bits. |
| 1669 | __ vmrs(v8::internal::pc); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1670 | __ mov(r5, Operand(0), LeaveCC, vs); // NaN converts to 0. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1671 | __ b(vs, &done); |
| 1672 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1673 | // Test whether exponent equal to 0x7FF (infinity or NaN). |
| 1674 | __ vmov(r6, r7, d0); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1675 | __ mov(r5, Operand(0x7FF00000)); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1676 | __ and_(r6, r6, Operand(r5)); |
| 1677 | __ teq(r6, Operand(r5)); |
| 1678 | __ mov(r6, Operand(0), LeaveCC, eq); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1679 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1680 | // Not infinity or NaN simply convert to int. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1681 | if (IsElementTypeSigned(array_type)) { |
| 1682 | __ vcvt_s32_f64(s0, d0, ne); |
| 1683 | } else { |
| 1684 | __ vcvt_u32_f64(s0, d0, ne); |
| 1685 | } |
| 1686 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1687 | __ vmov(r5, s0, ne); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1688 | |
| 1689 | __ bind(&done); |
| 1690 | switch (array_type) { |
| 1691 | case kExternalByteArray: |
| 1692 | case kExternalUnsignedByteArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1693 | __ strb(r5, MemOperand(r3, r4, LSL, 0)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1694 | break; |
| 1695 | case kExternalShortArray: |
| 1696 | case kExternalUnsignedShortArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1697 | __ strh(r5, MemOperand(r3, r4, LSL, 1)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1698 | break; |
| 1699 | case kExternalIntArray: |
| 1700 | case kExternalUnsignedIntArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1701 | __ str(r5, MemOperand(r3, r4, LSL, 2)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1702 | break; |
| 1703 | default: |
| 1704 | UNREACHABLE(); |
| 1705 | break; |
| 1706 | } |
| 1707 | } |
| 1708 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1709 | // Entry registers are intact, r0 holds the value which is the return value. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1710 | __ Ret(); |
| 1711 | } else { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1712 | // VFP3 is not available do manual conversions. |
| 1713 | __ ldr(r5, FieldMemOperand(value, HeapNumber::kExponentOffset)); |
| 1714 | __ ldr(r6, FieldMemOperand(value, HeapNumber::kMantissaOffset)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1715 | |
| 1716 | if (array_type == kExternalFloatArray) { |
| 1717 | Label done, nan_or_infinity_or_zero; |
| 1718 | static const int kMantissaInHiWordShift = |
| 1719 | kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord; |
| 1720 | |
| 1721 | static const int kMantissaInLoWordShift = |
| 1722 | kBitsPerInt - kMantissaInHiWordShift; |
| 1723 | |
| 1724 | // Test for all special exponent values: zeros, subnormal numbers, NaNs |
| 1725 | // and infinities. All these should be converted to 0. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1726 | __ mov(r7, Operand(HeapNumber::kExponentMask)); |
| 1727 | __ and_(r9, r5, Operand(r7), SetCC); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1728 | __ b(eq, &nan_or_infinity_or_zero); |
| 1729 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1730 | __ teq(r9, Operand(r7)); |
| 1731 | __ mov(r9, Operand(kBinary32ExponentMask), LeaveCC, eq); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1732 | __ b(eq, &nan_or_infinity_or_zero); |
| 1733 | |
| 1734 | // Rebias exponent. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1735 | __ mov(r9, Operand(r9, LSR, HeapNumber::kExponentShift)); |
| 1736 | __ add(r9, |
| 1737 | r9, |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1738 | Operand(kBinary32ExponentBias - HeapNumber::kExponentBias)); |
| 1739 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1740 | __ cmp(r9, Operand(kBinary32MaxExponent)); |
| 1741 | __ and_(r5, r5, Operand(HeapNumber::kSignMask), LeaveCC, gt); |
| 1742 | __ orr(r5, r5, Operand(kBinary32ExponentMask), LeaveCC, gt); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1743 | __ b(gt, &done); |
| 1744 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1745 | __ cmp(r9, Operand(kBinary32MinExponent)); |
| 1746 | __ and_(r5, r5, Operand(HeapNumber::kSignMask), LeaveCC, lt); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1747 | __ b(lt, &done); |
| 1748 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1749 | __ and_(r7, r5, Operand(HeapNumber::kSignMask)); |
| 1750 | __ and_(r5, r5, Operand(HeapNumber::kMantissaMask)); |
| 1751 | __ orr(r7, r7, Operand(r5, LSL, kMantissaInHiWordShift)); |
| 1752 | __ orr(r7, r7, Operand(r6, LSR, kMantissaInLoWordShift)); |
| 1753 | __ orr(r5, r7, Operand(r9, LSL, kBinary32ExponentShift)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1754 | |
| 1755 | __ bind(&done); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1756 | __ str(r5, MemOperand(r3, r4, LSL, 2)); |
| 1757 | // Entry registers are intact, r0 holds the value which is the return |
| 1758 | // value. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1759 | __ Ret(); |
| 1760 | |
| 1761 | __ bind(&nan_or_infinity_or_zero); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1762 | __ and_(r7, r5, Operand(HeapNumber::kSignMask)); |
| 1763 | __ and_(r5, r5, Operand(HeapNumber::kMantissaMask)); |
| 1764 | __ orr(r9, r9, r7); |
| 1765 | __ orr(r9, r9, Operand(r5, LSL, kMantissaInHiWordShift)); |
| 1766 | __ orr(r5, r9, Operand(r6, LSR, kMantissaInLoWordShift)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1767 | __ b(&done); |
| 1768 | } else { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1769 | bool is_signed_type = IsElementTypeSigned(array_type); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1770 | int meaningfull_bits = is_signed_type ? (kBitsPerInt - 1) : kBitsPerInt; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1771 | int32_t min_value = is_signed_type ? 0x80000000 : 0x00000000; |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1772 | |
| 1773 | Label done, sign; |
| 1774 | |
| 1775 | // Test for all special exponent values: zeros, subnormal numbers, NaNs |
| 1776 | // and infinities. All these should be converted to 0. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1777 | __ mov(r7, Operand(HeapNumber::kExponentMask)); |
| 1778 | __ and_(r9, r5, Operand(r7), SetCC); |
| 1779 | __ mov(r5, Operand(0), LeaveCC, eq); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1780 | __ b(eq, &done); |
| 1781 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1782 | __ teq(r9, Operand(r7)); |
| 1783 | __ mov(r5, Operand(0), LeaveCC, eq); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1784 | __ b(eq, &done); |
| 1785 | |
| 1786 | // Unbias exponent. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1787 | __ mov(r9, Operand(r9, LSR, HeapNumber::kExponentShift)); |
| 1788 | __ sub(r9, r9, Operand(HeapNumber::kExponentBias), SetCC); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1789 | // If exponent is negative than result is 0. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1790 | __ mov(r5, Operand(0), LeaveCC, mi); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1791 | __ b(mi, &done); |
| 1792 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1793 | // If exponent is too big than result is minimal value. |
| 1794 | __ cmp(r9, Operand(meaningfull_bits - 1)); |
| 1795 | __ mov(r5, Operand(min_value), LeaveCC, ge); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1796 | __ b(ge, &done); |
| 1797 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1798 | __ and_(r7, r5, Operand(HeapNumber::kSignMask), SetCC); |
| 1799 | __ and_(r5, r5, Operand(HeapNumber::kMantissaMask)); |
| 1800 | __ orr(r5, r5, Operand(1u << HeapNumber::kMantissaBitsInTopWord)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1801 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1802 | __ rsb(r9, r9, Operand(HeapNumber::kMantissaBitsInTopWord), SetCC); |
| 1803 | __ mov(r5, Operand(r5, LSR, r9), LeaveCC, pl); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1804 | __ b(pl, &sign); |
| 1805 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1806 | __ rsb(r9, r9, Operand(0)); |
| 1807 | __ mov(r5, Operand(r5, LSL, r9)); |
| 1808 | __ rsb(r9, r9, Operand(meaningfull_bits)); |
| 1809 | __ orr(r5, r5, Operand(r6, LSR, r9)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1810 | |
| 1811 | __ bind(&sign); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1812 | __ teq(r7, Operand(0)); |
| 1813 | __ rsb(r5, r5, Operand(0), LeaveCC, ne); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1814 | |
| 1815 | __ bind(&done); |
| 1816 | switch (array_type) { |
| 1817 | case kExternalByteArray: |
| 1818 | case kExternalUnsignedByteArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1819 | __ strb(r5, MemOperand(r3, r4, LSL, 0)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1820 | break; |
| 1821 | case kExternalShortArray: |
| 1822 | case kExternalUnsignedShortArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1823 | __ strh(r5, MemOperand(r3, r4, LSL, 1)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1824 | break; |
| 1825 | case kExternalIntArray: |
| 1826 | case kExternalUnsignedIntArray: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1827 | __ str(r5, MemOperand(r3, r4, LSL, 2)); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1828 | break; |
| 1829 | default: |
| 1830 | UNREACHABLE(); |
| 1831 | break; |
| 1832 | } |
| 1833 | } |
| 1834 | } |
| 1835 | |
| 1836 | // Slow case: call runtime. |
| 1837 | __ bind(&slow); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1838 | |
| 1839 | // Entry registers are intact. |
| 1840 | // r0: value |
| 1841 | // r1: key |
| 1842 | // r2: receiver |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1843 | GenerateRuntimeSetProperty(masm); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1844 | } |
| 1845 | |
| 1846 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1847 | void StoreIC::GenerateMegamorphic(MacroAssembler* masm) { |
| 1848 | // ----------- S t a t e ------------- |
| 1849 | // -- r0 : value |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1850 | // -- r1 : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1851 | // -- r2 : name |
| 1852 | // -- lr : return address |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1853 | // ----------------------------------- |
| 1854 | |
| 1855 | // Get the receiver from the stack and probe the stub cache. |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1856 | Code::Flags flags = Code::ComputeFlags(Code::STORE_IC, |
| 1857 | NOT_IN_LOOP, |
| 1858 | MONOMORPHIC); |
kasperl@chromium.org | 86f77b7 | 2009-07-06 08:21:57 +0000 | [diff] [blame] | 1859 | StubCache::GenerateProbe(masm, flags, r1, r2, r3, no_reg); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1860 | |
| 1861 | // Cache miss: Jump to runtime. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1862 | GenerateMiss(masm); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1863 | } |
| 1864 | |
| 1865 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1866 | void StoreIC::GenerateMiss(MacroAssembler* masm) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1867 | // ----------- S t a t e ------------- |
| 1868 | // -- r0 : value |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1869 | // -- r1 : receiver |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1870 | // -- r2 : name |
| 1871 | // -- lr : return address |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1872 | // ----------------------------------- |
| 1873 | |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 1874 | __ Push(r1, r2, r0); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1875 | |
mads.s.ager | 31e7138 | 2008-08-13 09:32:07 +0000 | [diff] [blame] | 1876 | // Perform tail call to the entry. |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1877 | ExternalReference ref = ExternalReference(IC_Utility(kStoreIC_Miss)); |
| 1878 | __ TailCallExternalReference(ref, 3, 1); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1879 | } |
| 1880 | |
| 1881 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1882 | void StoreIC::GenerateArrayLength(MacroAssembler* masm) { |
| 1883 | // ----------- S t a t e ------------- |
| 1884 | // -- r0 : value |
| 1885 | // -- r1 : receiver |
| 1886 | // -- r2 : name |
| 1887 | // -- lr : return address |
| 1888 | // ----------------------------------- |
| 1889 | // |
| 1890 | // This accepts as a receiver anything JSObject::SetElementsLength accepts |
| 1891 | // (currently anything except for external and pixel arrays which means |
| 1892 | // anything with elements of FixedArray type.), but currently is restricted |
| 1893 | // to JSArray. |
| 1894 | // Value must be a number, but only smis are accepted as the most common case. |
| 1895 | |
| 1896 | Label miss; |
| 1897 | |
| 1898 | Register receiver = r1; |
| 1899 | Register value = r0; |
| 1900 | Register scratch = r3; |
| 1901 | |
| 1902 | // Check that the receiver isn't a smi. |
| 1903 | __ BranchOnSmi(receiver, &miss); |
| 1904 | |
| 1905 | // Check that the object is a JS array. |
| 1906 | __ CompareObjectType(receiver, scratch, scratch, JS_ARRAY_TYPE); |
| 1907 | __ b(ne, &miss); |
| 1908 | |
| 1909 | // Check that elements are FixedArray. |
| 1910 | __ ldr(scratch, FieldMemOperand(receiver, JSArray::kElementsOffset)); |
| 1911 | __ CompareObjectType(scratch, scratch, scratch, FIXED_ARRAY_TYPE); |
| 1912 | __ b(ne, &miss); |
| 1913 | |
| 1914 | // Check that value is a smi. |
| 1915 | __ BranchOnNotSmi(value, &miss); |
| 1916 | |
| 1917 | // Prepare tail call to StoreIC_ArrayLength. |
lrn@chromium.org | c34f580 | 2010-04-28 12:53:43 +0000 | [diff] [blame] | 1918 | __ Push(receiver, value); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1919 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1920 | ExternalReference ref = ExternalReference(IC_Utility(kStoreIC_ArrayLength)); |
| 1921 | __ TailCallExternalReference(ref, 2, 1); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1922 | |
| 1923 | __ bind(&miss); |
| 1924 | |
| 1925 | GenerateMiss(masm); |
| 1926 | } |
| 1927 | |
| 1928 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1929 | #undef __ |
| 1930 | |
| 1931 | |
| 1932 | } } // namespace v8::internal |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1933 | |
| 1934 | #endif // V8_TARGET_ARCH_ARM |